Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1 | #include <sys/socket.h> |
| 2 | |
Thierry FOURNIER | c798b5d | 2015-03-17 01:09:57 +0100 | [diff] [blame] | 3 | #include <ctype.h> |
| 4 | |
Thierry FOURNIER | 6f1fd48 | 2015-01-23 14:06:13 +0100 | [diff] [blame] | 5 | #include <lauxlib.h> |
| 6 | #include <lua.h> |
| 7 | #include <lualib.h> |
| 8 | |
Thierry FOURNIER | 463119c | 2015-03-10 00:35:36 +0100 | [diff] [blame] | 9 | #if !defined(LUA_VERSION_NUM) || LUA_VERSION_NUM < 503 |
| 10 | #error "Requires Lua 5.3 or later." |
Cyril Bonté | dc0306e | 2015-03-02 00:08:40 +0100 | [diff] [blame] | 11 | #endif |
| 12 | |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 13 | #include <ebpttree.h> |
| 14 | |
| 15 | #include <common/cfgparse.h> |
| 16 | |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 17 | #include <types/connection.h> |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 18 | #include <types/hlua.h> |
Thierry FOURNIER | 65f34c6 | 2015-02-16 20:11:43 +0100 | [diff] [blame] | 19 | #include <types/proto_tcp.h> |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 20 | #include <types/proxy.h> |
| 21 | |
Thierry FOURNIER | 55da165 | 2015-01-23 11:36:30 +0100 | [diff] [blame] | 22 | #include <proto/arg.h> |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 23 | #include <proto/channel.h> |
Thierry FOURNIER | 9a819e7 | 2015-02-16 20:22:55 +0100 | [diff] [blame] | 24 | #include <proto/hdr_idx.h> |
Thierry FOURNIER | a097fdf | 2015-03-03 15:17:35 +0100 | [diff] [blame] | 25 | #include <proto/hlua.h> |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 26 | #include <proto/obj_type.h> |
Thierry FOURNIER | 83758bb | 2015-02-04 13:21:04 +0100 | [diff] [blame] | 27 | #include <proto/pattern.h> |
Thierry FOURNIER | d0fa538 | 2015-02-16 20:14:51 +0100 | [diff] [blame] | 28 | #include <proto/payload.h> |
| 29 | #include <proto/proto_http.h> |
Thierry FOURNIER | 258d8aa | 2015-02-16 20:23:40 +0100 | [diff] [blame] | 30 | #include <proto/proto_tcp.h> |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 31 | #include <proto/raw_sock.h> |
Thierry FOURNIER | d0fa538 | 2015-02-16 20:14:51 +0100 | [diff] [blame] | 32 | #include <proto/sample.h> |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 33 | #include <proto/server.h> |
| 34 | #include <proto/session.h> |
| 35 | #include <proto/ssl_sock.h> |
| 36 | #include <proto/stream_interface.h> |
Thierry FOURNIER | 9ff7e6e | 2015-01-23 11:08:20 +0100 | [diff] [blame] | 37 | #include <proto/task.h> |
| 38 | |
Thierry FOURNIER | 6f1fd48 | 2015-01-23 14:06:13 +0100 | [diff] [blame] | 39 | /* Lua uses longjmp to perform yield or throwing errors. This |
| 40 | * macro is used only for identifying the function that can |
| 41 | * not return because a longjmp is executed. |
| 42 | * __LJMP marks a prototype of hlua file that can use longjmp. |
| 43 | * WILL_LJMP() marks an lua function that will use longjmp. |
| 44 | * MAY_LJMP() marks an lua function that may use longjmp. |
| 45 | */ |
| 46 | #define __LJMP |
| 47 | #define WILL_LJMP(func) func |
| 48 | #define MAY_LJMP(func) func |
| 49 | |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 50 | /* The main Lua execution context. */ |
| 51 | struct hlua gL; |
| 52 | |
Thierry FOURNIER | 9ff7e6e | 2015-01-23 11:08:20 +0100 | [diff] [blame] | 53 | /* This is the memory pool containing all the signal structs. These |
| 54 | * struct are used to store each requiered signal between two tasks. |
| 55 | */ |
| 56 | struct pool_head *pool2_hlua_com; |
Thierry FOURNIER | 5b8608f | 2015-02-16 19:43:25 +0100 | [diff] [blame] | 57 | struct pool_head *pool2_hlua_sleep; |
Thierry FOURNIER | 9ff7e6e | 2015-01-23 11:08:20 +0100 | [diff] [blame] | 58 | |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 59 | /* Used for Socket connection. */ |
| 60 | static struct proxy socket_proxy; |
| 61 | static struct server socket_tcp; |
| 62 | #ifdef USE_OPENSSL |
| 63 | static struct server socket_ssl; |
| 64 | #endif |
| 65 | |
Thierry FOURNIER | a4a0f3d | 2015-01-23 12:08:30 +0100 | [diff] [blame] | 66 | /* List head of the function called at the initialisation time. */ |
| 67 | struct list hlua_init_functions = LIST_HEAD_INIT(hlua_init_functions); |
| 68 | |
Thierry FOURNIER | 2ba18a2 | 2015-01-23 14:07:08 +0100 | [diff] [blame] | 69 | /* The following variables contains the reference of the different |
| 70 | * Lua classes. These references are useful for identify metadata |
| 71 | * associated with an object. |
| 72 | */ |
Thierry FOURNIER | 65f34c6 | 2015-02-16 20:11:43 +0100 | [diff] [blame] | 73 | static int class_txn_ref; |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 74 | static int class_socket_ref; |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 75 | static int class_channel_ref; |
Thierry FOURNIER | bb53c7b | 2015-03-11 18:28:02 +0100 | [diff] [blame] | 76 | static int class_fetches_ref; |
Thierry FOURNIER | 594afe7 | 2015-03-10 23:58:30 +0100 | [diff] [blame] | 77 | static int class_converters_ref; |
Thierry FOURNIER | 08504f4 | 2015-03-16 14:17:08 +0100 | [diff] [blame] | 78 | static int class_http_ref; |
Thierry FOURNIER | 2ba18a2 | 2015-01-23 14:07:08 +0100 | [diff] [blame] | 79 | |
Thierry FOURNIER | bd41349 | 2015-03-03 16:52:26 +0100 | [diff] [blame] | 80 | /* Global Lua execution timeout. By default Lua, execution linked |
| 81 | * with session (actions, sample-fetches and converters) have a |
| 82 | * short timeout. Lua linked with tasks doesn't have a timeout |
| 83 | * because a task may remain alive during all the haproxy execution. |
| 84 | */ |
| 85 | static unsigned int hlua_timeout_session = 4000; /* session timeout. */ |
| 86 | static unsigned int hlua_timeout_task = TICK_ETERNITY; /* task timeout. */ |
| 87 | |
Thierry FOURNIER | ee9f802 | 2015-03-03 17:37:37 +0100 | [diff] [blame] | 88 | /* Interrupts the Lua processing each "hlua_nb_instruction" instructions. |
| 89 | * it is used for preventing infinite loops. |
| 90 | * |
| 91 | * I test the scheer with an infinite loop containing one incrementation |
| 92 | * and one test. I run this loop between 10 seconds, I raise a ceil of |
| 93 | * 710M loops from one interrupt each 9000 instructions, so I fix the value |
| 94 | * to one interrupt each 10 000 instructions. |
| 95 | * |
| 96 | * configured | Number of |
| 97 | * instructions | loops executed |
| 98 | * between two | in milions |
| 99 | * forced yields | |
| 100 | * ---------------+--------------- |
| 101 | * 10 | 160 |
| 102 | * 500 | 670 |
| 103 | * 1000 | 680 |
| 104 | * 5000 | 700 |
| 105 | * 7000 | 700 |
| 106 | * 8000 | 700 |
| 107 | * 9000 | 710 <- ceil |
| 108 | * 10000 | 710 |
| 109 | * 100000 | 710 |
| 110 | * 1000000 | 710 |
| 111 | * |
| 112 | */ |
| 113 | static unsigned int hlua_nb_instruction = 10000; |
| 114 | |
Willy Tarreau | 32f61e2 | 2015-03-18 17:54:59 +0100 | [diff] [blame] | 115 | /* Descriptor for the memory allocation state. If limit is not null, it will |
| 116 | * be enforced on any memory allocation. |
| 117 | */ |
| 118 | struct hlua_mem_allocator { |
| 119 | size_t allocated; |
| 120 | size_t limit; |
| 121 | }; |
| 122 | |
| 123 | static struct hlua_mem_allocator hlua_global_allocator; |
| 124 | |
Thierry FOURNIER | 55da165 | 2015-01-23 11:36:30 +0100 | [diff] [blame] | 125 | /* These functions converts types between HAProxy internal args or |
| 126 | * sample and LUA types. Another function permits to check if the |
| 127 | * LUA stack contains arguments according with an required ARG_T |
| 128 | * format. |
| 129 | */ |
| 130 | static int hlua_arg2lua(lua_State *L, const struct arg *arg); |
| 131 | static int hlua_lua2arg(lua_State *L, int ud, struct arg *arg); |
Thierry FOURNIER | 7f4942a | 2015-03-12 18:28:50 +0100 | [diff] [blame] | 132 | __LJMP static int hlua_lua2arg_check(lua_State *L, int first, struct arg *argp, |
| 133 | unsigned int mask, struct proxy *p); |
Willy Tarreau | 5eadada | 2015-03-10 17:28:54 +0100 | [diff] [blame] | 134 | static int hlua_smp2lua(lua_State *L, struct sample *smp); |
Thierry FOURNIER | 2694a1a | 2015-03-11 20:13:36 +0100 | [diff] [blame] | 135 | static int hlua_smp2lua_str(lua_State *L, struct sample *smp); |
Thierry FOURNIER | 55da165 | 2015-01-23 11:36:30 +0100 | [diff] [blame] | 136 | static int hlua_lua2smp(lua_State *L, int ud, struct sample *smp); |
| 137 | |
Thierry FOURNIER | e8b9a40 | 2015-02-25 18:48:12 +0100 | [diff] [blame] | 138 | /* Used to check an Lua function type in the stack. It creates and |
| 139 | * returns a reference of the function. This function throws an |
| 140 | * error if the rgument is not a "function". |
| 141 | */ |
| 142 | __LJMP unsigned int hlua_checkfunction(lua_State *L, int argno) |
| 143 | { |
| 144 | if (!lua_isfunction(L, argno)) { |
| 145 | const char *msg = lua_pushfstring(L, "function expected, got %s", luaL_typename(L, -1)); |
| 146 | WILL_LJMP(luaL_argerror(L, argno, msg)); |
| 147 | } |
| 148 | lua_pushvalue(L, argno); |
| 149 | return luaL_ref(L, LUA_REGISTRYINDEX); |
| 150 | } |
| 151 | |
| 152 | /* The three following functions are useful for adding entries |
| 153 | * in a table. These functions takes a string and respectively an |
| 154 | * integer, a string or a function and add it to the table in the |
| 155 | * top of the stack. |
| 156 | * |
| 157 | * These functions throws an error if no more stack size is |
| 158 | * available. |
| 159 | */ |
| 160 | __LJMP static inline void hlua_class_const_int(lua_State *L, const char *name, |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 161 | int value) |
Thierry FOURNIER | e8b9a40 | 2015-02-25 18:48:12 +0100 | [diff] [blame] | 162 | { |
| 163 | if (!lua_checkstack(L, 2)) |
| 164 | WILL_LJMP(luaL_error(L, "full stack")); |
| 165 | lua_pushstring(L, name); |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 166 | lua_pushinteger(L, value); |
Thierry FOURNIER | e8b9a40 | 2015-02-25 18:48:12 +0100 | [diff] [blame] | 167 | lua_settable(L, -3); |
| 168 | } |
| 169 | __LJMP static inline void hlua_class_const_str(lua_State *L, const char *name, |
| 170 | const char *value) |
| 171 | { |
| 172 | if (!lua_checkstack(L, 2)) |
| 173 | WILL_LJMP(luaL_error(L, "full stack")); |
| 174 | lua_pushstring(L, name); |
| 175 | lua_pushstring(L, value); |
| 176 | lua_settable(L, -3); |
| 177 | } |
| 178 | __LJMP static inline void hlua_class_function(lua_State *L, const char *name, |
| 179 | int (*function)(lua_State *L)) |
| 180 | { |
| 181 | if (!lua_checkstack(L, 2)) |
| 182 | WILL_LJMP(luaL_error(L, "full stack")); |
| 183 | lua_pushstring(L, name); |
| 184 | lua_pushcclosure(L, function, 0); |
| 185 | lua_settable(L, -3); |
| 186 | } |
| 187 | |
| 188 | /* This function check the number of arguments available in the |
| 189 | * stack. If the number of arguments available is not the same |
| 190 | * then <nb> an error is throwed. |
| 191 | */ |
| 192 | __LJMP static inline void check_args(lua_State *L, int nb, char *fcn) |
| 193 | { |
| 194 | if (lua_gettop(L) == nb) |
| 195 | return; |
| 196 | WILL_LJMP(luaL_error(L, "'%s' needs %d arguments", fcn, nb)); |
| 197 | } |
| 198 | |
| 199 | /* Return true if the data in stack[<ud>] is an object of |
| 200 | * type <class_ref>. |
| 201 | */ |
Thierry FOURNIER | 2297bc2 | 2015-03-11 17:43:33 +0100 | [diff] [blame] | 202 | static int hlua_metaistype(lua_State *L, int ud, int class_ref) |
Thierry FOURNIER | e8b9a40 | 2015-02-25 18:48:12 +0100 | [diff] [blame] | 203 | { |
Thierry FOURNIER | e8b9a40 | 2015-02-25 18:48:12 +0100 | [diff] [blame] | 204 | if (!lua_getmetatable(L, ud)) |
| 205 | return 0; |
| 206 | |
| 207 | lua_rawgeti(L, LUA_REGISTRYINDEX, class_ref); |
| 208 | if (!lua_rawequal(L, -1, -2)) { |
| 209 | lua_pop(L, 2); |
| 210 | return 0; |
| 211 | } |
| 212 | |
| 213 | lua_pop(L, 2); |
| 214 | return 1; |
| 215 | } |
| 216 | |
| 217 | /* Return an object of the expected type, or throws an error. */ |
| 218 | __LJMP static void *hlua_checkudata(lua_State *L, int ud, int class_ref) |
| 219 | { |
Thierry FOURNIER | 2297bc2 | 2015-03-11 17:43:33 +0100 | [diff] [blame] | 220 | void *p; |
| 221 | |
| 222 | /* Check if the stack entry is an array. */ |
| 223 | if (!lua_istable(L, ud)) |
| 224 | WILL_LJMP(luaL_argerror(L, ud, NULL)); |
| 225 | /* Check if the metadata have the expected type. */ |
| 226 | if (!hlua_metaistype(L, ud, class_ref)) |
| 227 | WILL_LJMP(luaL_argerror(L, ud, NULL)); |
| 228 | /* Push on the stack at the entry [0] of the table. */ |
| 229 | lua_rawgeti(L, ud, 0); |
| 230 | /* Check if this entry is userdata. */ |
| 231 | p = lua_touserdata(L, -1); |
| 232 | if (!p) |
| 233 | WILL_LJMP(luaL_argerror(L, ud, NULL)); |
| 234 | /* Remove the entry returned by lua_rawgeti(). */ |
| 235 | lua_pop(L, 1); |
| 236 | /* Return the associated struct. */ |
| 237 | return p; |
Thierry FOURNIER | e8b9a40 | 2015-02-25 18:48:12 +0100 | [diff] [blame] | 238 | } |
| 239 | |
| 240 | /* This fucntion push an error string prefixed by the file name |
| 241 | * and the line number where the error is encountered. |
| 242 | */ |
| 243 | static int hlua_pusherror(lua_State *L, const char *fmt, ...) |
| 244 | { |
| 245 | va_list argp; |
| 246 | va_start(argp, fmt); |
| 247 | luaL_where(L, 1); |
| 248 | lua_pushvfstring(L, fmt, argp); |
| 249 | va_end(argp); |
| 250 | lua_concat(L, 2); |
| 251 | return 1; |
| 252 | } |
| 253 | |
Thierry FOURNIER | 9ff7e6e | 2015-01-23 11:08:20 +0100 | [diff] [blame] | 254 | /* This function register a new signal. "lua" is the current lua |
| 255 | * execution context. It contains a pointer to the associated task. |
| 256 | * "link" is a list head attached to an other task that must be wake |
| 257 | * the lua task if an event occurs. This is useful with external |
| 258 | * events like TCP I/O or sleep functions. This funcion allocate |
| 259 | * memory for the signal. |
| 260 | */ |
| 261 | static int hlua_com_new(struct hlua *lua, struct list *link) |
| 262 | { |
| 263 | struct hlua_com *com = pool_alloc2(pool2_hlua_com); |
| 264 | if (!com) |
| 265 | return 0; |
| 266 | LIST_ADDQ(&lua->com, &com->purge_me); |
| 267 | LIST_ADDQ(link, &com->wake_me); |
| 268 | com->task = lua->task; |
| 269 | return 1; |
| 270 | } |
| 271 | |
| 272 | /* This function purge all the pending signals when the LUA execution |
| 273 | * is finished. This prevent than a coprocess try to wake a deleted |
| 274 | * task. This function remove the memory associated to the signal. |
| 275 | */ |
| 276 | static void hlua_com_purge(struct hlua *lua) |
| 277 | { |
| 278 | struct hlua_com *com, *back; |
| 279 | |
| 280 | /* Delete all pending communication signals. */ |
| 281 | list_for_each_entry_safe(com, back, &lua->com, purge_me) { |
| 282 | LIST_DEL(&com->purge_me); |
| 283 | LIST_DEL(&com->wake_me); |
| 284 | pool_free2(pool2_hlua_com, com); |
| 285 | } |
| 286 | } |
| 287 | |
| 288 | /* This function sends signals. It wakes all the tasks attached |
| 289 | * to a list head, and remove the signal, and free the used |
| 290 | * memory. |
| 291 | */ |
| 292 | static void hlua_com_wake(struct list *wake) |
| 293 | { |
| 294 | struct hlua_com *com, *back; |
| 295 | |
| 296 | /* Wake task and delete all pending communication signals. */ |
| 297 | list_for_each_entry_safe(com, back, wake, wake_me) { |
| 298 | LIST_DEL(&com->purge_me); |
| 299 | LIST_DEL(&com->wake_me); |
| 300 | task_wakeup(com->task, TASK_WOKEN_MSG); |
| 301 | pool_free2(pool2_hlua_com, com); |
| 302 | } |
| 303 | } |
| 304 | |
Thierry FOURNIER | 55da165 | 2015-01-23 11:36:30 +0100 | [diff] [blame] | 305 | /* This functions is used with sample fetch and converters. It |
| 306 | * converts the HAProxy configuration argument in a lua stack |
| 307 | * values. |
| 308 | * |
| 309 | * It takes an array of "arg", and each entry of the array is |
| 310 | * converted and pushed in the LUA stack. |
| 311 | */ |
| 312 | static int hlua_arg2lua(lua_State *L, const struct arg *arg) |
| 313 | { |
| 314 | switch (arg->type) { |
| 315 | case ARGT_SINT: |
| 316 | lua_pushinteger(L, arg->data.sint); |
| 317 | break; |
| 318 | |
| 319 | case ARGT_UINT: |
| 320 | case ARGT_TIME: |
| 321 | case ARGT_SIZE: |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 322 | lua_pushinteger(L, arg->data.sint); |
Thierry FOURNIER | 55da165 | 2015-01-23 11:36:30 +0100 | [diff] [blame] | 323 | break; |
| 324 | |
| 325 | case ARGT_STR: |
| 326 | lua_pushlstring(L, arg->data.str.str, arg->data.str.len); |
| 327 | break; |
| 328 | |
| 329 | case ARGT_IPV4: |
| 330 | case ARGT_IPV6: |
| 331 | case ARGT_MSK4: |
| 332 | case ARGT_MSK6: |
| 333 | case ARGT_FE: |
| 334 | case ARGT_BE: |
| 335 | case ARGT_TAB: |
| 336 | case ARGT_SRV: |
| 337 | case ARGT_USR: |
| 338 | case ARGT_MAP: |
| 339 | default: |
| 340 | lua_pushnil(L); |
| 341 | break; |
| 342 | } |
| 343 | return 1; |
| 344 | } |
| 345 | |
| 346 | /* This function take one entrie in an LUA stack at the index "ud", |
| 347 | * and try to convert it in an HAProxy argument entry. This is useful |
| 348 | * with sample fetch wrappers. The input arguments are gived to the |
| 349 | * lua wrapper and converted as arg list by thi function. |
| 350 | */ |
| 351 | static int hlua_lua2arg(lua_State *L, int ud, struct arg *arg) |
| 352 | { |
| 353 | switch (lua_type(L, ud)) { |
| 354 | |
| 355 | case LUA_TNUMBER: |
| 356 | case LUA_TBOOLEAN: |
| 357 | arg->type = ARGT_SINT; |
| 358 | arg->data.sint = lua_tointeger(L, ud); |
| 359 | break; |
| 360 | |
| 361 | case LUA_TSTRING: |
| 362 | arg->type = ARGT_STR; |
| 363 | arg->data.str.str = (char *)lua_tolstring(L, ud, (size_t *)&arg->data.str.len); |
| 364 | break; |
| 365 | |
| 366 | case LUA_TUSERDATA: |
| 367 | case LUA_TNIL: |
| 368 | case LUA_TTABLE: |
| 369 | case LUA_TFUNCTION: |
| 370 | case LUA_TTHREAD: |
| 371 | case LUA_TLIGHTUSERDATA: |
| 372 | arg->type = ARGT_SINT; |
| 373 | arg->data.uint = 0; |
| 374 | break; |
| 375 | } |
| 376 | return 1; |
| 377 | } |
| 378 | |
| 379 | /* the following functions are used to convert a struct sample |
| 380 | * in Lua type. This useful to convert the return of the |
| 381 | * fetchs or converters. |
| 382 | */ |
Willy Tarreau | 5eadada | 2015-03-10 17:28:54 +0100 | [diff] [blame] | 383 | static int hlua_smp2lua(lua_State *L, struct sample *smp) |
Thierry FOURNIER | 55da165 | 2015-01-23 11:36:30 +0100 | [diff] [blame] | 384 | { |
| 385 | switch (smp->type) { |
| 386 | case SMP_T_SINT: |
Thierry FOURNIER | 55da165 | 2015-01-23 11:36:30 +0100 | [diff] [blame] | 387 | case SMP_T_BOOL: |
| 388 | case SMP_T_UINT: |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 389 | lua_pushinteger(L, smp->data.sint); |
Thierry FOURNIER | 55da165 | 2015-01-23 11:36:30 +0100 | [diff] [blame] | 390 | break; |
| 391 | |
| 392 | case SMP_T_BIN: |
| 393 | case SMP_T_STR: |
| 394 | lua_pushlstring(L, smp->data.str.str, smp->data.str.len); |
| 395 | break; |
| 396 | |
| 397 | case SMP_T_METH: |
| 398 | switch (smp->data.meth.meth) { |
| 399 | case HTTP_METH_OPTIONS: lua_pushstring(L, "OPTIONS"); break; |
| 400 | case HTTP_METH_GET: lua_pushstring(L, "GET"); break; |
| 401 | case HTTP_METH_HEAD: lua_pushstring(L, "HEAD"); break; |
| 402 | case HTTP_METH_POST: lua_pushstring(L, "POST"); break; |
| 403 | case HTTP_METH_PUT: lua_pushstring(L, "PUT"); break; |
| 404 | case HTTP_METH_DELETE: lua_pushstring(L, "DELETE"); break; |
| 405 | case HTTP_METH_TRACE: lua_pushstring(L, "TRACE"); break; |
| 406 | case HTTP_METH_CONNECT: lua_pushstring(L, "CONNECT"); break; |
| 407 | case HTTP_METH_OTHER: |
| 408 | lua_pushlstring(L, smp->data.meth.str.str, smp->data.meth.str.len); |
| 409 | break; |
| 410 | default: |
| 411 | lua_pushnil(L); |
| 412 | break; |
| 413 | } |
| 414 | break; |
| 415 | |
| 416 | case SMP_T_IPV4: |
| 417 | case SMP_T_IPV6: |
| 418 | case SMP_T_ADDR: /* This type is never used to qualify a sample. */ |
Willy Tarreau | 5eadada | 2015-03-10 17:28:54 +0100 | [diff] [blame] | 419 | if (sample_casts[smp->type][SMP_T_STR] && |
| 420 | sample_casts[smp->type][SMP_T_STR](smp)) |
| 421 | lua_pushlstring(L, smp->data.str.str, smp->data.str.len); |
| 422 | else |
| 423 | lua_pushnil(L); |
| 424 | break; |
Thierry FOURNIER | 55da165 | 2015-01-23 11:36:30 +0100 | [diff] [blame] | 425 | default: |
| 426 | lua_pushnil(L); |
| 427 | break; |
| 428 | } |
| 429 | return 1; |
| 430 | } |
| 431 | |
Thierry FOURNIER | 2694a1a | 2015-03-11 20:13:36 +0100 | [diff] [blame] | 432 | /* the following functions are used to convert a struct sample |
| 433 | * in Lua strings. This is useful to convert the return of the |
| 434 | * fetchs or converters. |
| 435 | */ |
| 436 | static int hlua_smp2lua_str(lua_State *L, struct sample *smp) |
| 437 | { |
| 438 | switch (smp->type) { |
| 439 | |
| 440 | case SMP_T_BIN: |
| 441 | case SMP_T_STR: |
| 442 | lua_pushlstring(L, smp->data.str.str, smp->data.str.len); |
| 443 | break; |
| 444 | |
| 445 | case SMP_T_METH: |
| 446 | switch (smp->data.meth.meth) { |
| 447 | case HTTP_METH_OPTIONS: lua_pushstring(L, "OPTIONS"); break; |
| 448 | case HTTP_METH_GET: lua_pushstring(L, "GET"); break; |
| 449 | case HTTP_METH_HEAD: lua_pushstring(L, "HEAD"); break; |
| 450 | case HTTP_METH_POST: lua_pushstring(L, "POST"); break; |
| 451 | case HTTP_METH_PUT: lua_pushstring(L, "PUT"); break; |
| 452 | case HTTP_METH_DELETE: lua_pushstring(L, "DELETE"); break; |
| 453 | case HTTP_METH_TRACE: lua_pushstring(L, "TRACE"); break; |
| 454 | case HTTP_METH_CONNECT: lua_pushstring(L, "CONNECT"); break; |
| 455 | case HTTP_METH_OTHER: |
| 456 | lua_pushlstring(L, smp->data.meth.str.str, smp->data.meth.str.len); |
| 457 | break; |
| 458 | default: |
| 459 | lua_pushstring(L, ""); |
| 460 | break; |
| 461 | } |
| 462 | break; |
| 463 | |
| 464 | case SMP_T_SINT: |
| 465 | case SMP_T_BOOL: |
| 466 | case SMP_T_UINT: |
| 467 | case SMP_T_IPV4: |
| 468 | case SMP_T_IPV6: |
| 469 | case SMP_T_ADDR: /* This type is never used to qualify a sample. */ |
| 470 | if (sample_casts[smp->type][SMP_T_STR] && |
| 471 | sample_casts[smp->type][SMP_T_STR](smp)) |
| 472 | lua_pushlstring(L, smp->data.str.str, smp->data.str.len); |
| 473 | else |
| 474 | lua_pushstring(L, ""); |
| 475 | break; |
| 476 | default: |
| 477 | lua_pushstring(L, ""); |
| 478 | break; |
| 479 | } |
| 480 | return 1; |
| 481 | } |
| 482 | |
Thierry FOURNIER | 55da165 | 2015-01-23 11:36:30 +0100 | [diff] [blame] | 483 | /* the following functions are used to convert an Lua type in a |
| 484 | * struct sample. This is useful to provide data from a converter |
| 485 | * to the LUA code. |
| 486 | */ |
| 487 | static int hlua_lua2smp(lua_State *L, int ud, struct sample *smp) |
| 488 | { |
| 489 | switch (lua_type(L, ud)) { |
| 490 | |
| 491 | case LUA_TNUMBER: |
| 492 | smp->type = SMP_T_SINT; |
| 493 | smp->data.sint = lua_tointeger(L, ud); |
| 494 | break; |
| 495 | |
| 496 | |
| 497 | case LUA_TBOOLEAN: |
| 498 | smp->type = SMP_T_BOOL; |
| 499 | smp->data.uint = lua_toboolean(L, ud); |
| 500 | break; |
| 501 | |
| 502 | case LUA_TSTRING: |
| 503 | smp->type = SMP_T_STR; |
| 504 | smp->flags |= SMP_F_CONST; |
| 505 | smp->data.str.str = (char *)lua_tolstring(L, ud, (size_t *)&smp->data.str.len); |
| 506 | break; |
| 507 | |
| 508 | case LUA_TUSERDATA: |
| 509 | case LUA_TNIL: |
| 510 | case LUA_TTABLE: |
| 511 | case LUA_TFUNCTION: |
| 512 | case LUA_TTHREAD: |
| 513 | case LUA_TLIGHTUSERDATA: |
| 514 | smp->type = SMP_T_BOOL; |
| 515 | smp->data.uint = 0; |
| 516 | break; |
| 517 | } |
| 518 | return 1; |
| 519 | } |
| 520 | |
| 521 | /* This function check the "argp" builded by another conversion function |
| 522 | * is in accord with the expected argp defined by the "mask". The fucntion |
| 523 | * returns true or false. It can be adjust the types if there compatibles. |
Thierry FOURNIER | 3caa039 | 2015-03-13 13:38:17 +0100 | [diff] [blame] | 524 | * |
| 525 | * This function assumes thant the argp argument contains ARGM_NBARGS + 1 |
| 526 | * entries. |
Thierry FOURNIER | 55da165 | 2015-01-23 11:36:30 +0100 | [diff] [blame] | 527 | */ |
Thierry FOURNIER | 7f4942a | 2015-03-12 18:28:50 +0100 | [diff] [blame] | 528 | __LJMP int hlua_lua2arg_check(lua_State *L, int first, struct arg *argp, |
| 529 | unsigned int mask, struct proxy *p) |
Thierry FOURNIER | 55da165 | 2015-01-23 11:36:30 +0100 | [diff] [blame] | 530 | { |
| 531 | int min_arg; |
| 532 | int idx; |
Thierry FOURNIER | 7f4942a | 2015-03-12 18:28:50 +0100 | [diff] [blame] | 533 | struct proxy *px; |
| 534 | char *sname, *pname; |
Thierry FOURNIER | 55da165 | 2015-01-23 11:36:30 +0100 | [diff] [blame] | 535 | |
| 536 | idx = 0; |
| 537 | min_arg = ARGM(mask); |
| 538 | mask >>= ARGM_BITS; |
| 539 | |
| 540 | while (1) { |
| 541 | |
| 542 | /* Check oversize. */ |
| 543 | if (idx >= ARGM_NBARGS && argp[idx].type != ARGT_STOP) { |
Cyril Bonté | 577a36a | 2015-03-02 00:08:38 +0100 | [diff] [blame] | 544 | WILL_LJMP(luaL_argerror(L, first + idx, "Malformed argument mask")); |
Thierry FOURNIER | 55da165 | 2015-01-23 11:36:30 +0100 | [diff] [blame] | 545 | } |
| 546 | |
| 547 | /* Check for mandatory arguments. */ |
| 548 | if (argp[idx].type == ARGT_STOP) { |
Thierry FOURNIER | 3caa039 | 2015-03-13 13:38:17 +0100 | [diff] [blame] | 549 | if (idx < min_arg) { |
| 550 | |
| 551 | /* If miss other argument than the first one, we return an error. */ |
| 552 | if (idx > 0) |
| 553 | WILL_LJMP(luaL_argerror(L, first + idx, "Mandatory argument expected")); |
| 554 | |
| 555 | /* If first argument have a certain type, some default values |
| 556 | * may be used. See the function smp_resolve_args(). |
| 557 | */ |
| 558 | switch (mask & ARGT_MASK) { |
| 559 | |
| 560 | case ARGT_FE: |
| 561 | if (!(p->cap & PR_CAP_FE)) |
| 562 | WILL_LJMP(luaL_argerror(L, first + idx, "Mandatory argument expected")); |
| 563 | argp[idx].data.prx = p; |
| 564 | argp[idx].type = ARGT_FE; |
| 565 | argp[idx+1].type = ARGT_STOP; |
| 566 | break; |
| 567 | |
| 568 | case ARGT_BE: |
| 569 | if (!(p->cap & PR_CAP_BE)) |
| 570 | WILL_LJMP(luaL_argerror(L, first + idx, "Mandatory argument expected")); |
| 571 | argp[idx].data.prx = p; |
| 572 | argp[idx].type = ARGT_BE; |
| 573 | argp[idx+1].type = ARGT_STOP; |
| 574 | break; |
| 575 | |
| 576 | case ARGT_TAB: |
| 577 | argp[idx].data.prx = p; |
| 578 | argp[idx].type = ARGT_TAB; |
| 579 | argp[idx+1].type = ARGT_STOP; |
| 580 | break; |
| 581 | |
| 582 | default: |
| 583 | WILL_LJMP(luaL_argerror(L, first + idx, "Mandatory argument expected")); |
| 584 | break; |
| 585 | } |
| 586 | } |
Thierry FOURNIER | 55da165 | 2015-01-23 11:36:30 +0100 | [diff] [blame] | 587 | return 0; |
| 588 | } |
| 589 | |
| 590 | /* Check for exceed the number of requiered argument. */ |
| 591 | if ((mask & ARGT_MASK) == ARGT_STOP && |
| 592 | argp[idx].type != ARGT_STOP) { |
| 593 | WILL_LJMP(luaL_argerror(L, first + idx, "Last argument expected")); |
| 594 | } |
| 595 | |
| 596 | if ((mask & ARGT_MASK) == ARGT_STOP && |
| 597 | argp[idx].type == ARGT_STOP) { |
| 598 | return 0; |
| 599 | } |
| 600 | |
Thierry FOURNIER | 7f4942a | 2015-03-12 18:28:50 +0100 | [diff] [blame] | 601 | /* Convert some argument types. */ |
| 602 | switch (mask & ARGT_MASK) { |
Thierry FOURNIER | 55da165 | 2015-01-23 11:36:30 +0100 | [diff] [blame] | 603 | case ARGT_SINT: |
Thierry FOURNIER | 7f4942a | 2015-03-12 18:28:50 +0100 | [diff] [blame] | 604 | if (argp[idx].type != ARGT_SINT) |
| 605 | WILL_LJMP(luaL_argerror(L, first + idx, "integer expected")); |
| 606 | argp[idx].type = ARGT_SINT; |
| 607 | break; |
| 608 | |
| 609 | case ARGT_UINT: |
| 610 | if (argp[idx].type != ARGT_SINT) |
| 611 | WILL_LJMP(luaL_argerror(L, first + idx, "integer expected")); |
| 612 | argp[idx].type = ARGT_SINT; |
| 613 | break; |
| 614 | |
| 615 | case ARGT_TIME: |
| 616 | if (argp[idx].type != ARGT_SINT) |
| 617 | WILL_LJMP(luaL_argerror(L, first + idx, "integer expected")); |
| 618 | argp[idx].type = ARGT_SINT; |
| 619 | break; |
| 620 | |
| 621 | case ARGT_SIZE: |
| 622 | if (argp[idx].type != ARGT_SINT) |
| 623 | WILL_LJMP(luaL_argerror(L, first + idx, "integer expected")); |
| 624 | argp[idx].type = ARGT_SINT; |
| 625 | break; |
| 626 | |
| 627 | case ARGT_FE: |
| 628 | if (argp[idx].type != ARGT_STR) |
| 629 | WILL_LJMP(luaL_argerror(L, first + idx, "string expected")); |
| 630 | memcpy(trash.str, argp[idx].data.str.str, argp[idx].data.str.len); |
| 631 | trash.str[argp[idx].data.str.len] = 0; |
| 632 | argp[idx].data.prx = findproxy(trash.str, PR_CAP_FE); |
| 633 | if (!argp[idx].data.prx) |
| 634 | WILL_LJMP(luaL_argerror(L, first + idx, "frontend doesn't exist")); |
| 635 | argp[idx].type = ARGT_FE; |
| 636 | break; |
| 637 | |
| 638 | case ARGT_BE: |
| 639 | if (argp[idx].type != ARGT_STR) |
| 640 | WILL_LJMP(luaL_argerror(L, first + idx, "string expected")); |
| 641 | memcpy(trash.str, argp[idx].data.str.str, argp[idx].data.str.len); |
| 642 | trash.str[argp[idx].data.str.len] = 0; |
| 643 | argp[idx].data.prx = findproxy(trash.str, PR_CAP_BE); |
| 644 | if (!argp[idx].data.prx) |
| 645 | WILL_LJMP(luaL_argerror(L, first + idx, "backend doesn't exist")); |
| 646 | argp[idx].type = ARGT_BE; |
| 647 | break; |
| 648 | |
| 649 | case ARGT_TAB: |
| 650 | if (argp[idx].type != ARGT_STR) |
| 651 | WILL_LJMP(luaL_argerror(L, first + idx, "string expected")); |
| 652 | memcpy(trash.str, argp[idx].data.str.str, argp[idx].data.str.len); |
| 653 | trash.str[argp[idx].data.str.len] = 0; |
| 654 | argp[idx].data.prx = find_stktable(trash.str); |
| 655 | if (!argp[idx].data.prx) |
| 656 | WILL_LJMP(luaL_argerror(L, first + idx, "table doesn't exist")); |
| 657 | argp[idx].type = ARGT_TAB; |
| 658 | break; |
| 659 | |
| 660 | case ARGT_SRV: |
| 661 | if (argp[idx].type != ARGT_STR) |
| 662 | WILL_LJMP(luaL_argerror(L, first + idx, "string expected")); |
| 663 | memcpy(trash.str, argp[idx].data.str.str, argp[idx].data.str.len); |
| 664 | trash.str[argp[idx].data.str.len] = 0; |
| 665 | sname = strrchr(trash.str, '/'); |
| 666 | if (sname) { |
| 667 | *sname++ = '\0'; |
| 668 | pname = trash.str; |
| 669 | px = findproxy(pname, PR_CAP_BE); |
| 670 | if (!px) |
| 671 | WILL_LJMP(luaL_argerror(L, first + idx, "backend doesn't exist")); |
| 672 | } |
| 673 | else { |
| 674 | sname = trash.str; |
| 675 | px = p; |
Thierry FOURNIER | 55da165 | 2015-01-23 11:36:30 +0100 | [diff] [blame] | 676 | } |
Thierry FOURNIER | 7f4942a | 2015-03-12 18:28:50 +0100 | [diff] [blame] | 677 | argp[idx].data.srv = findserver(px, sname); |
| 678 | if (!argp[idx].data.srv) |
| 679 | WILL_LJMP(luaL_argerror(L, first + idx, "server doesn't exist")); |
| 680 | argp[idx].type = ARGT_SRV; |
| 681 | break; |
| 682 | |
| 683 | case ARGT_IPV4: |
| 684 | memcpy(trash.str, argp[idx].data.str.str, argp[idx].data.str.len); |
| 685 | trash.str[argp[idx].data.str.len] = 0; |
| 686 | if (inet_pton(AF_INET, trash.str, &argp[idx].data.ipv4)) |
| 687 | WILL_LJMP(luaL_argerror(L, first + idx, "invalid IPv4 address")); |
| 688 | argp[idx].type = ARGT_IPV4; |
| 689 | break; |
| 690 | |
| 691 | case ARGT_MSK4: |
| 692 | memcpy(trash.str, argp[idx].data.str.str, argp[idx].data.str.len); |
| 693 | trash.str[argp[idx].data.str.len] = 0; |
| 694 | if (!str2mask(trash.str, &argp[idx].data.ipv4)) |
| 695 | WILL_LJMP(luaL_argerror(L, first + idx, "invalid IPv4 mask")); |
| 696 | argp[idx].type = ARGT_MSK4; |
| 697 | break; |
| 698 | |
| 699 | case ARGT_IPV6: |
| 700 | memcpy(trash.str, argp[idx].data.str.str, argp[idx].data.str.len); |
| 701 | trash.str[argp[idx].data.str.len] = 0; |
| 702 | if (inet_pton(AF_INET6, trash.str, &argp[idx].data.ipv6)) |
| 703 | WILL_LJMP(luaL_argerror(L, first + idx, "invalid IPv6 address")); |
| 704 | argp[idx].type = ARGT_IPV6; |
| 705 | break; |
| 706 | |
| 707 | case ARGT_MSK6: |
| 708 | case ARGT_MAP: |
| 709 | case ARGT_REG: |
| 710 | case ARGT_USR: |
| 711 | WILL_LJMP(luaL_argerror(L, first + idx, "type not yet supported")); |
Thierry FOURNIER | 55da165 | 2015-01-23 11:36:30 +0100 | [diff] [blame] | 712 | break; |
| 713 | } |
| 714 | |
| 715 | /* Check for type of argument. */ |
| 716 | if ((mask & ARGT_MASK) != argp[idx].type) { |
| 717 | const char *msg = lua_pushfstring(L, "'%s' expected, got '%s'", |
| 718 | arg_type_names[(mask & ARGT_MASK)], |
| 719 | arg_type_names[argp[idx].type & ARGT_MASK]); |
| 720 | WILL_LJMP(luaL_argerror(L, first + idx, msg)); |
| 721 | } |
| 722 | |
| 723 | /* Next argument. */ |
| 724 | mask >>= ARGT_BITS; |
| 725 | idx++; |
| 726 | } |
| 727 | } |
| 728 | |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 729 | /* |
| 730 | * The following functions are used to make correspondance between the the |
| 731 | * executed lua pointer and the "struct hlua *" that contain the context. |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 732 | * |
| 733 | * - hlua_gethlua : return the hlua context associated with an lua_State. |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 734 | * - hlua_sethlua : create the association between hlua context and lua_state. |
| 735 | */ |
| 736 | static inline struct hlua *hlua_gethlua(lua_State *L) |
| 737 | { |
Thierry FOURNIER | 38c5fd6 | 2015-03-10 02:40:29 +0100 | [diff] [blame] | 738 | struct hlua **hlua = lua_getextraspace(L); |
| 739 | return *hlua; |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 740 | } |
| 741 | static inline void hlua_sethlua(struct hlua *hlua) |
| 742 | { |
Thierry FOURNIER | 38c5fd6 | 2015-03-10 02:40:29 +0100 | [diff] [blame] | 743 | struct hlua **hlua_store = lua_getextraspace(hlua->T); |
| 744 | *hlua_store = hlua; |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 745 | } |
| 746 | |
Thierry FOURNIER | c798b5d | 2015-03-17 01:09:57 +0100 | [diff] [blame] | 747 | /* This function is used to send logs. It try to send on screen (stderr) |
| 748 | * and on the default syslog server. |
| 749 | */ |
| 750 | static inline void hlua_sendlog(struct proxy *px, int level, const char *msg) |
| 751 | { |
| 752 | struct tm tm; |
| 753 | char *p; |
| 754 | |
| 755 | /* Cleanup the log message. */ |
| 756 | p = trash.str; |
| 757 | for (; *msg != '\0'; msg++, p++) { |
| 758 | if (p >= trash.str + trash.size - 1) |
| 759 | return; |
| 760 | if (isprint(*msg)) |
| 761 | *p = *msg; |
| 762 | else |
| 763 | *p = '.'; |
| 764 | } |
| 765 | *p = '\0'; |
| 766 | |
| 767 | send_log(px, level, "%s", trash.str); |
| 768 | if (!(global.mode & MODE_QUIET) || (global.mode & (MODE_VERBOSE | MODE_STARTING))) { |
| 769 | get_localtime(date.tv_sec, &tm); |
| 770 | fprintf(stderr, "[%s] %03d/%02d%02d%02d (%d) : %s\n", |
| 771 | log_levels[level], tm.tm_yday, tm.tm_hour, tm.tm_min, tm.tm_sec, |
| 772 | (int)getpid(), trash.str); |
| 773 | fflush(stderr); |
| 774 | } |
| 775 | } |
| 776 | |
Thierry FOURNIER | c42c1ae | 2015-03-03 17:17:55 +0100 | [diff] [blame] | 777 | /* This function just ensure that the yield will be always |
| 778 | * returned with a timeout and permit to set some flags |
| 779 | */ |
| 780 | __LJMP void hlua_yieldk(lua_State *L, int nresults, int ctx, |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 781 | lua_KFunction k, int timeout, unsigned int flags) |
Thierry FOURNIER | c42c1ae | 2015-03-03 17:17:55 +0100 | [diff] [blame] | 782 | { |
| 783 | struct hlua *hlua = hlua_gethlua(L); |
| 784 | |
| 785 | /* Set the wake timeout. If timeout is required, we set |
| 786 | * the expiration time. |
| 787 | */ |
Thierry FOURNIER | dc9ca96 | 2015-03-05 11:16:52 +0100 | [diff] [blame] | 788 | hlua->wake_time = tick_first(timeout, hlua->expire); |
Thierry FOURNIER | c42c1ae | 2015-03-03 17:17:55 +0100 | [diff] [blame] | 789 | |
Thierry FOURNIER | 4abd3ae | 2015-03-03 17:29:06 +0100 | [diff] [blame] | 790 | hlua->flags |= flags; |
| 791 | |
Thierry FOURNIER | c42c1ae | 2015-03-03 17:17:55 +0100 | [diff] [blame] | 792 | /* Process the yield. */ |
| 793 | WILL_LJMP(lua_yieldk(L, nresults, ctx, k)); |
| 794 | } |
| 795 | |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 796 | /* This function initialises the Lua environment stored in the session. |
| 797 | * It must be called at the start of the session. This function creates |
| 798 | * an LUA coroutine. It can not be use to crete the main LUA context. |
| 799 | */ |
| 800 | int hlua_ctx_init(struct hlua *lua, struct task *task) |
| 801 | { |
| 802 | lua->Mref = LUA_REFNIL; |
Thierry FOURNIER | a097fdf | 2015-03-03 15:17:35 +0100 | [diff] [blame] | 803 | lua->flags = 0; |
Thierry FOURNIER | 9ff7e6e | 2015-01-23 11:08:20 +0100 | [diff] [blame] | 804 | LIST_INIT(&lua->com); |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 805 | lua->T = lua_newthread(gL.T); |
| 806 | if (!lua->T) { |
| 807 | lua->Tref = LUA_REFNIL; |
| 808 | return 0; |
| 809 | } |
| 810 | hlua_sethlua(lua); |
| 811 | lua->Tref = luaL_ref(gL.T, LUA_REGISTRYINDEX); |
| 812 | lua->task = task; |
| 813 | return 1; |
| 814 | } |
| 815 | |
| 816 | /* Used to destroy the Lua coroutine when the attached session or task |
| 817 | * is destroyed. The destroy also the memory context. The struct "lua" |
| 818 | * is not freed. |
| 819 | */ |
| 820 | void hlua_ctx_destroy(struct hlua *lua) |
| 821 | { |
Thierry FOURNIER | a718b29 | 2015-03-04 16:48:34 +0100 | [diff] [blame] | 822 | if (!lua->T) |
| 823 | return; |
| 824 | |
Thierry FOURNIER | 9ff7e6e | 2015-01-23 11:08:20 +0100 | [diff] [blame] | 825 | /* Purge all the pending signals. */ |
| 826 | hlua_com_purge(lua); |
| 827 | |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 828 | /* The thread is garbage collected by Lua. */ |
| 829 | luaL_unref(lua->T, LUA_REGISTRYINDEX, lua->Mref); |
| 830 | luaL_unref(gL.T, LUA_REGISTRYINDEX, lua->Tref); |
| 831 | } |
| 832 | |
| 833 | /* This function is used to restore the Lua context when a coroutine |
| 834 | * fails. This function copy the common memory between old coroutine |
| 835 | * and the new coroutine. The old coroutine is destroyed, and its |
| 836 | * replaced by the new coroutine. |
| 837 | * If the flag "keep_msg" is set, the last entry of the old is assumed |
| 838 | * as string error message and it is copied in the new stack. |
| 839 | */ |
| 840 | static int hlua_ctx_renew(struct hlua *lua, int keep_msg) |
| 841 | { |
| 842 | lua_State *T; |
| 843 | int new_ref; |
| 844 | |
| 845 | /* Renew the main LUA stack doesn't have sense. */ |
| 846 | if (lua == &gL) |
| 847 | return 0; |
| 848 | |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 849 | /* New Lua coroutine. */ |
| 850 | T = lua_newthread(gL.T); |
| 851 | if (!T) |
| 852 | return 0; |
| 853 | |
| 854 | /* Copy last error message. */ |
| 855 | if (keep_msg) |
| 856 | lua_xmove(lua->T, T, 1); |
| 857 | |
| 858 | /* Copy data between the coroutines. */ |
| 859 | lua_rawgeti(lua->T, LUA_REGISTRYINDEX, lua->Mref); |
| 860 | lua_xmove(lua->T, T, 1); |
| 861 | new_ref = luaL_ref(T, LUA_REGISTRYINDEX); /* Valur poped. */ |
| 862 | |
| 863 | /* Destroy old data. */ |
| 864 | luaL_unref(lua->T, LUA_REGISTRYINDEX, lua->Mref); |
| 865 | |
| 866 | /* The thread is garbage collected by Lua. */ |
| 867 | luaL_unref(gL.T, LUA_REGISTRYINDEX, lua->Tref); |
| 868 | |
| 869 | /* Fill the struct with the new coroutine values. */ |
| 870 | lua->Mref = new_ref; |
| 871 | lua->T = T; |
| 872 | lua->Tref = luaL_ref(gL.T, LUA_REGISTRYINDEX); |
| 873 | |
| 874 | /* Set context. */ |
| 875 | hlua_sethlua(lua); |
| 876 | |
| 877 | return 1; |
| 878 | } |
| 879 | |
Thierry FOURNIER | ee9f802 | 2015-03-03 17:37:37 +0100 | [diff] [blame] | 880 | void hlua_hook(lua_State *L, lua_Debug *ar) |
| 881 | { |
Thierry FOURNIER | cae49c9 | 2015-03-06 14:05:24 +0100 | [diff] [blame] | 882 | struct hlua *hlua = hlua_gethlua(L); |
| 883 | |
| 884 | /* Lua cannot yield when its returning from a function, |
| 885 | * so, we can fix the interrupt hook to 1 instruction, |
| 886 | * expecting that the function is finnished. |
| 887 | */ |
| 888 | if (lua_gethookmask(L) & LUA_MASKRET) { |
| 889 | lua_sethook(hlua->T, hlua_hook, LUA_MASKCOUNT, 1); |
| 890 | return; |
| 891 | } |
| 892 | |
| 893 | /* restore the interrupt condition. */ |
| 894 | lua_sethook(hlua->T, hlua_hook, LUA_MASKCOUNT, hlua_nb_instruction); |
| 895 | |
| 896 | /* If we interrupt the Lua processing in yieldable state, we yield. |
| 897 | * If the state is not yieldable, trying yield causes an error. |
| 898 | */ |
| 899 | if (lua_isyieldable(L)) |
| 900 | WILL_LJMP(hlua_yieldk(L, 0, 0, NULL, TICK_ETERNITY, HLUA_CTRLYIELD)); |
| 901 | |
Thierry FOURNIER | a85cfb1 | 2015-03-13 14:50:06 +0100 | [diff] [blame] | 902 | /* If we cannot yield, update the clock and check the timeout. */ |
| 903 | tv_update_date(0, 1); |
Thierry FOURNIER | cae49c9 | 2015-03-06 14:05:24 +0100 | [diff] [blame] | 904 | if (tick_is_expired(hlua->expire, now_ms)) { |
| 905 | lua_pushfstring(L, "execution timeout"); |
| 906 | WILL_LJMP(lua_error(L)); |
| 907 | } |
| 908 | |
| 909 | /* Try to interrupt the process at the end of the current |
| 910 | * unyieldable function. |
| 911 | */ |
| 912 | lua_sethook(hlua->T, hlua_hook, LUA_MASKRET|LUA_MASKCOUNT, hlua_nb_instruction); |
Thierry FOURNIER | ee9f802 | 2015-03-03 17:37:37 +0100 | [diff] [blame] | 913 | } |
| 914 | |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 915 | /* This function start or resumes the Lua stack execution. If the flag |
| 916 | * "yield_allowed" if no set and the LUA stack execution returns a yield |
| 917 | * The function return an error. |
| 918 | * |
| 919 | * The function can returns 4 values: |
| 920 | * - HLUA_E_OK : The execution is terminated without any errors. |
| 921 | * - HLUA_E_AGAIN : The execution must continue at the next associated |
| 922 | * task wakeup. |
| 923 | * - HLUA_E_ERRMSG : An error has occured, an error message is set in |
| 924 | * the top of the stack. |
| 925 | * - HLUA_E_ERR : An error has occured without error message. |
| 926 | * |
| 927 | * If an error occured, the stack is renewed and it is ready to run new |
| 928 | * LUA code. |
| 929 | */ |
| 930 | static enum hlua_exec hlua_ctx_resume(struct hlua *lua, int yield_allowed) |
| 931 | { |
| 932 | int ret; |
| 933 | const char *msg; |
| 934 | |
Thierry FOURNIER | a097fdf | 2015-03-03 15:17:35 +0100 | [diff] [blame] | 935 | HLUA_SET_RUN(lua); |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 936 | |
Thierry FOURNIER | dc9ca96 | 2015-03-05 11:16:52 +0100 | [diff] [blame] | 937 | /* If we want to resume the task, then check first the execution timeout. |
| 938 | * if it is reached, we can interrupt the Lua processing. |
| 939 | */ |
| 940 | if (tick_is_expired(lua->expire, now_ms)) |
| 941 | goto timeout_reached; |
| 942 | |
Thierry FOURNIER | ee9f802 | 2015-03-03 17:37:37 +0100 | [diff] [blame] | 943 | resume_execution: |
| 944 | |
| 945 | /* This hook interrupts the Lua processing each 'hlua_nb_instruction' |
| 946 | * instructions. it is used for preventing infinite loops. |
| 947 | */ |
| 948 | lua_sethook(lua->T, hlua_hook, LUA_MASKCOUNT, hlua_nb_instruction); |
| 949 | |
Thierry FOURNIER | 1bfc09b | 2015-03-05 17:10:14 +0100 | [diff] [blame] | 950 | /* Remove all flags except the running flags. */ |
| 951 | lua->flags = HLUA_RUN; |
| 952 | |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 953 | /* Call the function. */ |
| 954 | ret = lua_resume(lua->T, gL.T, lua->nargs); |
| 955 | switch (ret) { |
| 956 | |
| 957 | case LUA_OK: |
| 958 | ret = HLUA_E_OK; |
| 959 | break; |
| 960 | |
| 961 | case LUA_YIELD: |
Thierry FOURNIER | dc9ca96 | 2015-03-05 11:16:52 +0100 | [diff] [blame] | 962 | /* Check if the execution timeout is expired. It it is the case, we |
| 963 | * break the Lua execution. |
Thierry FOURNIER | ee9f802 | 2015-03-03 17:37:37 +0100 | [diff] [blame] | 964 | */ |
Thierry FOURNIER | dc9ca96 | 2015-03-05 11:16:52 +0100 | [diff] [blame] | 965 | if (tick_is_expired(lua->expire, now_ms)) { |
| 966 | |
| 967 | timeout_reached: |
| 968 | |
| 969 | lua_settop(lua->T, 0); /* Empty the stack. */ |
| 970 | if (!lua_checkstack(lua->T, 1)) { |
| 971 | ret = HLUA_E_ERR; |
Thierry FOURNIER | ee9f802 | 2015-03-03 17:37:37 +0100 | [diff] [blame] | 972 | break; |
| 973 | } |
Thierry FOURNIER | dc9ca96 | 2015-03-05 11:16:52 +0100 | [diff] [blame] | 974 | lua_pushfstring(lua->T, "execution timeout"); |
| 975 | ret = HLUA_E_ERRMSG; |
| 976 | break; |
| 977 | } |
| 978 | /* Process the forced yield. if the general yield is not allowed or |
| 979 | * if no task were associated this the current Lua execution |
| 980 | * coroutine, we resume the execution. Else we want to return in the |
| 981 | * scheduler and we want to be waked up again, to continue the |
| 982 | * current Lua execution. So we schedule our own task. |
| 983 | */ |
| 984 | if (HLUA_IS_CTRLYIELDING(lua)) { |
Thierry FOURNIER | ee9f802 | 2015-03-03 17:37:37 +0100 | [diff] [blame] | 985 | if (!yield_allowed || !lua->task) |
| 986 | goto resume_execution; |
Thierry FOURNIER | ee9f802 | 2015-03-03 17:37:37 +0100 | [diff] [blame] | 987 | task_wakeup(lua->task, TASK_WOKEN_MSG); |
Thierry FOURNIER | ee9f802 | 2015-03-03 17:37:37 +0100 | [diff] [blame] | 988 | } |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 989 | if (!yield_allowed) { |
| 990 | lua_settop(lua->T, 0); /* Empty the stack. */ |
| 991 | if (!lua_checkstack(lua->T, 1)) { |
| 992 | ret = HLUA_E_ERR; |
| 993 | break; |
| 994 | } |
| 995 | lua_pushfstring(lua->T, "yield not allowed"); |
| 996 | ret = HLUA_E_ERRMSG; |
| 997 | break; |
| 998 | } |
| 999 | ret = HLUA_E_AGAIN; |
| 1000 | break; |
| 1001 | |
| 1002 | case LUA_ERRRUN: |
Thierry FOURNIER | c42c1ae | 2015-03-03 17:17:55 +0100 | [diff] [blame] | 1003 | lua->wake_time = TICK_ETERNITY; |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 1004 | if (!lua_checkstack(lua->T, 1)) { |
| 1005 | ret = HLUA_E_ERR; |
| 1006 | break; |
| 1007 | } |
| 1008 | msg = lua_tostring(lua->T, -1); |
| 1009 | lua_settop(lua->T, 0); /* Empty the stack. */ |
| 1010 | lua_pop(lua->T, 1); |
| 1011 | if (msg) |
| 1012 | lua_pushfstring(lua->T, "runtime error: %s", msg); |
| 1013 | else |
| 1014 | lua_pushfstring(lua->T, "unknown runtime error"); |
| 1015 | ret = HLUA_E_ERRMSG; |
| 1016 | break; |
| 1017 | |
| 1018 | case LUA_ERRMEM: |
Thierry FOURNIER | c42c1ae | 2015-03-03 17:17:55 +0100 | [diff] [blame] | 1019 | lua->wake_time = TICK_ETERNITY; |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 1020 | lua_settop(lua->T, 0); /* Empty the stack. */ |
| 1021 | if (!lua_checkstack(lua->T, 1)) { |
| 1022 | ret = HLUA_E_ERR; |
| 1023 | break; |
| 1024 | } |
| 1025 | lua_pushfstring(lua->T, "out of memory error"); |
| 1026 | ret = HLUA_E_ERRMSG; |
| 1027 | break; |
| 1028 | |
| 1029 | case LUA_ERRERR: |
Thierry FOURNIER | c42c1ae | 2015-03-03 17:17:55 +0100 | [diff] [blame] | 1030 | lua->wake_time = TICK_ETERNITY; |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 1031 | if (!lua_checkstack(lua->T, 1)) { |
| 1032 | ret = HLUA_E_ERR; |
| 1033 | break; |
| 1034 | } |
| 1035 | msg = lua_tostring(lua->T, -1); |
| 1036 | lua_settop(lua->T, 0); /* Empty the stack. */ |
| 1037 | lua_pop(lua->T, 1); |
| 1038 | if (msg) |
| 1039 | lua_pushfstring(lua->T, "message handler error: %s", msg); |
| 1040 | else |
| 1041 | lua_pushfstring(lua->T, "message handler error"); |
| 1042 | ret = HLUA_E_ERRMSG; |
| 1043 | break; |
| 1044 | |
| 1045 | default: |
Thierry FOURNIER | c42c1ae | 2015-03-03 17:17:55 +0100 | [diff] [blame] | 1046 | lua->wake_time = TICK_ETERNITY; |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 1047 | lua_settop(lua->T, 0); /* Empty the stack. */ |
| 1048 | if (!lua_checkstack(lua->T, 1)) { |
| 1049 | ret = HLUA_E_ERR; |
| 1050 | break; |
| 1051 | } |
| 1052 | lua_pushfstring(lua->T, "unknonwn error"); |
| 1053 | ret = HLUA_E_ERRMSG; |
| 1054 | break; |
| 1055 | } |
| 1056 | |
| 1057 | switch (ret) { |
| 1058 | case HLUA_E_AGAIN: |
| 1059 | break; |
| 1060 | |
| 1061 | case HLUA_E_ERRMSG: |
Thierry FOURNIER | 9ff7e6e | 2015-01-23 11:08:20 +0100 | [diff] [blame] | 1062 | hlua_com_purge(lua); |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 1063 | hlua_ctx_renew(lua, 1); |
Thierry FOURNIER | a097fdf | 2015-03-03 15:17:35 +0100 | [diff] [blame] | 1064 | HLUA_CLR_RUN(lua); |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 1065 | break; |
| 1066 | |
| 1067 | case HLUA_E_ERR: |
Thierry FOURNIER | a097fdf | 2015-03-03 15:17:35 +0100 | [diff] [blame] | 1068 | HLUA_CLR_RUN(lua); |
Thierry FOURNIER | 9ff7e6e | 2015-01-23 11:08:20 +0100 | [diff] [blame] | 1069 | hlua_com_purge(lua); |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 1070 | hlua_ctx_renew(lua, 0); |
| 1071 | break; |
| 1072 | |
| 1073 | case HLUA_E_OK: |
Thierry FOURNIER | a097fdf | 2015-03-03 15:17:35 +0100 | [diff] [blame] | 1074 | HLUA_CLR_RUN(lua); |
Thierry FOURNIER | 9ff7e6e | 2015-01-23 11:08:20 +0100 | [diff] [blame] | 1075 | hlua_com_purge(lua); |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 1076 | break; |
| 1077 | } |
| 1078 | |
| 1079 | return ret; |
| 1080 | } |
| 1081 | |
Thierry FOURNIER | 83758bb | 2015-02-04 13:21:04 +0100 | [diff] [blame] | 1082 | /* This function is an LUA binding. It provides a function |
| 1083 | * for deleting ACL from a referenced ACL file. |
| 1084 | */ |
| 1085 | __LJMP static int hlua_del_acl(lua_State *L) |
| 1086 | { |
| 1087 | const char *name; |
| 1088 | const char *key; |
| 1089 | struct pat_ref *ref; |
| 1090 | |
| 1091 | MAY_LJMP(check_args(L, 2, "del_acl")); |
| 1092 | |
| 1093 | name = MAY_LJMP(luaL_checkstring(L, 1)); |
| 1094 | key = MAY_LJMP(luaL_checkstring(L, 2)); |
| 1095 | |
| 1096 | ref = pat_ref_lookup(name); |
| 1097 | if (!ref) |
| 1098 | WILL_LJMP(luaL_error(L, "'del_acl': unkown acl file '%s'", name)); |
| 1099 | |
| 1100 | pat_ref_delete(ref, key); |
| 1101 | return 0; |
| 1102 | } |
| 1103 | |
| 1104 | /* This function is an LUA binding. It provides a function |
| 1105 | * for deleting map entry from a referenced map file. |
| 1106 | */ |
| 1107 | static int hlua_del_map(lua_State *L) |
| 1108 | { |
| 1109 | const char *name; |
| 1110 | const char *key; |
| 1111 | struct pat_ref *ref; |
| 1112 | |
| 1113 | MAY_LJMP(check_args(L, 2, "del_map")); |
| 1114 | |
| 1115 | name = MAY_LJMP(luaL_checkstring(L, 1)); |
| 1116 | key = MAY_LJMP(luaL_checkstring(L, 2)); |
| 1117 | |
| 1118 | ref = pat_ref_lookup(name); |
| 1119 | if (!ref) |
| 1120 | WILL_LJMP(luaL_error(L, "'del_map': unkown acl file '%s'", name)); |
| 1121 | |
| 1122 | pat_ref_delete(ref, key); |
| 1123 | return 0; |
| 1124 | } |
| 1125 | |
| 1126 | /* This function is an LUA binding. It provides a function |
| 1127 | * for adding ACL pattern from a referenced ACL file. |
| 1128 | */ |
| 1129 | static int hlua_add_acl(lua_State *L) |
| 1130 | { |
| 1131 | const char *name; |
| 1132 | const char *key; |
| 1133 | struct pat_ref *ref; |
| 1134 | |
| 1135 | MAY_LJMP(check_args(L, 2, "add_acl")); |
| 1136 | |
| 1137 | name = MAY_LJMP(luaL_checkstring(L, 1)); |
| 1138 | key = MAY_LJMP(luaL_checkstring(L, 2)); |
| 1139 | |
| 1140 | ref = pat_ref_lookup(name); |
| 1141 | if (!ref) |
| 1142 | WILL_LJMP(luaL_error(L, "'add_acl': unkown acl file '%s'", name)); |
| 1143 | |
| 1144 | if (pat_ref_find_elt(ref, key) == NULL) |
| 1145 | pat_ref_add(ref, key, NULL, NULL); |
| 1146 | return 0; |
| 1147 | } |
| 1148 | |
| 1149 | /* This function is an LUA binding. It provides a function |
| 1150 | * for setting map pattern and sample from a referenced map |
| 1151 | * file. |
| 1152 | */ |
| 1153 | static int hlua_set_map(lua_State *L) |
| 1154 | { |
| 1155 | const char *name; |
| 1156 | const char *key; |
| 1157 | const char *value; |
| 1158 | struct pat_ref *ref; |
| 1159 | |
| 1160 | MAY_LJMP(check_args(L, 3, "set_map")); |
| 1161 | |
| 1162 | name = MAY_LJMP(luaL_checkstring(L, 1)); |
| 1163 | key = MAY_LJMP(luaL_checkstring(L, 2)); |
| 1164 | value = MAY_LJMP(luaL_checkstring(L, 3)); |
| 1165 | |
| 1166 | ref = pat_ref_lookup(name); |
| 1167 | if (!ref) |
| 1168 | WILL_LJMP(luaL_error(L, "'set_map': unkown map file '%s'", name)); |
| 1169 | |
| 1170 | if (pat_ref_find_elt(ref, key) != NULL) |
| 1171 | pat_ref_set(ref, key, value, NULL); |
| 1172 | else |
| 1173 | pat_ref_add(ref, key, value, NULL); |
| 1174 | return 0; |
| 1175 | } |
| 1176 | |
Thierry FOURNIER | 65f34c6 | 2015-02-16 20:11:43 +0100 | [diff] [blame] | 1177 | /* A class is a lot of memory that contain data. This data can be a table, |
| 1178 | * an integer or user data. This data is associated with a metatable. This |
| 1179 | * metatable have an original version registred in the global context with |
| 1180 | * the name of the object (_G[<name>] = <metable> ). |
| 1181 | * |
| 1182 | * A metable is a table that modify the standard behavior of a standard |
| 1183 | * access to the associated data. The entries of this new metatable are |
| 1184 | * defined as is: |
| 1185 | * |
| 1186 | * http://lua-users.org/wiki/MetatableEvents |
| 1187 | * |
| 1188 | * __index |
| 1189 | * |
| 1190 | * we access an absent field in a table, the result is nil. This is |
| 1191 | * true, but it is not the whole truth. Actually, such access triggers |
| 1192 | * the interpreter to look for an __index metamethod: If there is no |
| 1193 | * such method, as usually happens, then the access results in nil; |
| 1194 | * otherwise, the metamethod will provide the result. |
| 1195 | * |
| 1196 | * Control 'prototype' inheritance. When accessing "myTable[key]" and |
| 1197 | * the key does not appear in the table, but the metatable has an __index |
| 1198 | * property: |
| 1199 | * |
| 1200 | * - if the value is a function, the function is called, passing in the |
| 1201 | * table and the key; the return value of that function is returned as |
| 1202 | * the result. |
| 1203 | * |
| 1204 | * - if the value is another table, the value of the key in that table is |
| 1205 | * asked for and returned (and if it doesn't exist in that table, but that |
| 1206 | * table's metatable has an __index property, then it continues on up) |
| 1207 | * |
| 1208 | * - Use "rawget(myTable,key)" to skip this metamethod. |
| 1209 | * |
| 1210 | * http://www.lua.org/pil/13.4.1.html |
| 1211 | * |
| 1212 | * __newindex |
| 1213 | * |
| 1214 | * Like __index, but control property assignment. |
| 1215 | * |
| 1216 | * __mode - Control weak references. A string value with one or both |
| 1217 | * of the characters 'k' and 'v' which specifies that the the |
| 1218 | * keys and/or values in the table are weak references. |
| 1219 | * |
| 1220 | * __call - Treat a table like a function. When a table is followed by |
| 1221 | * parenthesis such as "myTable( 'foo' )" and the metatable has |
| 1222 | * a __call key pointing to a function, that function is invoked |
| 1223 | * (passing any specified arguments) and the return value is |
| 1224 | * returned. |
| 1225 | * |
| 1226 | * __metatable - Hide the metatable. When "getmetatable( myTable )" is |
| 1227 | * called, if the metatable for myTable has a __metatable |
| 1228 | * key, the value of that key is returned instead of the |
| 1229 | * actual metatable. |
| 1230 | * |
| 1231 | * __tostring - Control string representation. When the builtin |
| 1232 | * "tostring( myTable )" function is called, if the metatable |
| 1233 | * for myTable has a __tostring property set to a function, |
| 1234 | * that function is invoked (passing myTable to it) and the |
| 1235 | * return value is used as the string representation. |
| 1236 | * |
| 1237 | * __len - Control table length. When the table length is requested using |
| 1238 | * the length operator ( '#' ), if the metatable for myTable has |
| 1239 | * a __len key pointing to a function, that function is invoked |
| 1240 | * (passing myTable to it) and the return value used as the value |
| 1241 | * of "#myTable". |
| 1242 | * |
| 1243 | * __gc - Userdata finalizer code. When userdata is set to be garbage |
| 1244 | * collected, if the metatable has a __gc field pointing to a |
| 1245 | * function, that function is first invoked, passing the userdata |
| 1246 | * to it. The __gc metamethod is not called for tables. |
| 1247 | * (See http://lua-users.org/lists/lua-l/2006-11/msg00508.html) |
| 1248 | * |
| 1249 | * Special metamethods for redefining standard operators: |
| 1250 | * http://www.lua.org/pil/13.1.html |
| 1251 | * |
| 1252 | * __add "+" |
| 1253 | * __sub "-" |
| 1254 | * __mul "*" |
| 1255 | * __div "/" |
| 1256 | * __unm "!" |
| 1257 | * __pow "^" |
| 1258 | * __concat ".." |
| 1259 | * |
| 1260 | * Special methods for redfining standar relations |
| 1261 | * http://www.lua.org/pil/13.2.html |
| 1262 | * |
| 1263 | * __eq "==" |
| 1264 | * __lt "<" |
| 1265 | * __le "<=" |
| 1266 | */ |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1267 | |
| 1268 | /* |
| 1269 | * |
| 1270 | * |
| 1271 | * Class Socket |
| 1272 | * |
| 1273 | * |
| 1274 | */ |
| 1275 | |
| 1276 | __LJMP static struct hlua_socket *hlua_checksocket(lua_State *L, int ud) |
| 1277 | { |
| 1278 | return (struct hlua_socket *)MAY_LJMP(hlua_checkudata(L, ud, class_socket_ref)); |
| 1279 | } |
| 1280 | |
| 1281 | /* This function is the handler called for each I/O on the established |
| 1282 | * connection. It is used for notify space avalaible to send or data |
| 1283 | * received. |
| 1284 | */ |
| 1285 | static void hlua_socket_handler(struct stream_interface *si) |
| 1286 | { |
| 1287 | struct appctx *appctx = objt_appctx(si->end); |
Willy Tarreau | 50fe03b | 2014-11-28 13:59:31 +0100 | [diff] [blame] | 1288 | struct connection *c = objt_conn(si_opposite(si)->end); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1289 | |
| 1290 | /* Wakeup the main session if the client connection is closed. */ |
Willy Tarreau | 2bb4a96 | 2014-11-28 11:11:05 +0100 | [diff] [blame] | 1291 | if (!c || channel_output_closed(si_ic(si)) || channel_input_closed(si_oc(si))) { |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1292 | if (appctx->ctx.hlua.socket) { |
| 1293 | appctx->ctx.hlua.socket->s = NULL; |
| 1294 | appctx->ctx.hlua.socket = NULL; |
| 1295 | } |
| 1296 | si_shutw(si); |
| 1297 | si_shutr(si); |
Willy Tarreau | 2bb4a96 | 2014-11-28 11:11:05 +0100 | [diff] [blame] | 1298 | si_ic(si)->flags |= CF_READ_NULL; |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1299 | hlua_com_wake(&appctx->ctx.hlua.wake_on_read); |
| 1300 | hlua_com_wake(&appctx->ctx.hlua.wake_on_write); |
| 1301 | return; |
| 1302 | } |
| 1303 | |
| 1304 | if (!(c->flags & CO_FL_CONNECTED)) |
| 1305 | return; |
| 1306 | |
| 1307 | /* This function is called after the connect. */ |
| 1308 | appctx->ctx.hlua.connected = 1; |
| 1309 | |
| 1310 | /* Wake the tasks which wants to write if the buffer have avalaible space. */ |
Willy Tarreau | 2bb4a96 | 2014-11-28 11:11:05 +0100 | [diff] [blame] | 1311 | if (channel_may_recv(si_oc(si))) |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1312 | hlua_com_wake(&appctx->ctx.hlua.wake_on_write); |
| 1313 | |
| 1314 | /* Wake the tasks which wants to read if the buffer contains data. */ |
Willy Tarreau | 2bb4a96 | 2014-11-28 11:11:05 +0100 | [diff] [blame] | 1315 | if (channel_is_empty(si_ic(si))) |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1316 | hlua_com_wake(&appctx->ctx.hlua.wake_on_read); |
| 1317 | } |
| 1318 | |
| 1319 | /* This function is called when the "struct session" is destroyed. |
| 1320 | * Remove the link from the object to this session. |
| 1321 | * Wake all the pending signals. |
| 1322 | */ |
| 1323 | static void hlua_socket_release(struct stream_interface *si) |
| 1324 | { |
| 1325 | struct appctx *appctx = objt_appctx(si->end); |
| 1326 | |
| 1327 | /* Remove my link in the original object. */ |
| 1328 | if (appctx->ctx.hlua.socket) |
| 1329 | appctx->ctx.hlua.socket->s = NULL; |
| 1330 | |
| 1331 | /* Wake all the task waiting for me. */ |
| 1332 | hlua_com_wake(&appctx->ctx.hlua.wake_on_read); |
| 1333 | hlua_com_wake(&appctx->ctx.hlua.wake_on_write); |
| 1334 | } |
| 1335 | |
| 1336 | /* If the garbage collectio of the object is launch, nobody |
| 1337 | * uses this object. If the session does not exists, just quit. |
| 1338 | * Send the shutdown signal to the session. In some cases, |
| 1339 | * pending signal can rest in the read and write lists. destroy |
| 1340 | * it. |
| 1341 | */ |
| 1342 | __LJMP static int hlua_socket_gc(lua_State *L) |
| 1343 | { |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 1344 | struct hlua_socket *socket; |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1345 | struct appctx *appctx; |
| 1346 | |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 1347 | MAY_LJMP(check_args(L, 1, "__gc")); |
| 1348 | |
| 1349 | socket = MAY_LJMP(hlua_checksocket(L, 1)); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1350 | if (!socket->s) |
| 1351 | return 0; |
| 1352 | |
| 1353 | /* Remove all reference between the Lua stack and the coroutine session. */ |
| 1354 | appctx = objt_appctx(socket->s->si[0].end); |
| 1355 | session_shutdown(socket->s, SN_ERR_KILLED); |
| 1356 | socket->s = NULL; |
| 1357 | appctx->ctx.hlua.socket = NULL; |
| 1358 | |
| 1359 | return 0; |
| 1360 | } |
| 1361 | |
| 1362 | /* The close function send shutdown signal and break the |
| 1363 | * links between the session and the object. |
| 1364 | */ |
| 1365 | __LJMP static int hlua_socket_close(lua_State *L) |
| 1366 | { |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 1367 | struct hlua_socket *socket; |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1368 | struct appctx *appctx; |
| 1369 | |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 1370 | MAY_LJMP(check_args(L, 1, "close")); |
| 1371 | |
| 1372 | socket = MAY_LJMP(hlua_checksocket(L, 1)); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1373 | if (!socket->s) |
| 1374 | return 0; |
| 1375 | |
| 1376 | /* Close the session and remove the associated stop task. */ |
| 1377 | session_shutdown(socket->s, SN_ERR_KILLED); |
| 1378 | appctx = objt_appctx(socket->s->si[0].end); |
| 1379 | appctx->ctx.hlua.socket = NULL; |
| 1380 | socket->s = NULL; |
| 1381 | |
| 1382 | return 0; |
| 1383 | } |
| 1384 | |
| 1385 | /* This Lua function assumes that the stack contain three parameters. |
| 1386 | * 1 - USERDATA containing a struct socket |
| 1387 | * 2 - INTEGER with values of the macro defined below |
| 1388 | * If the integer is -1, we must read at most one line. |
| 1389 | * If the integer is -2, we ust read all the data until the |
| 1390 | * end of the stream. |
| 1391 | * If the integer is positive value, we must read a number of |
| 1392 | * bytes corresponding to this value. |
| 1393 | */ |
| 1394 | #define HLSR_READ_LINE (-1) |
| 1395 | #define HLSR_READ_ALL (-2) |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 1396 | __LJMP static int hlua_socket_receive_yield(struct lua_State *L, int status, lua_KContext ctx) |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1397 | { |
| 1398 | struct hlua_socket *socket = MAY_LJMP(hlua_checksocket(L, 1)); |
| 1399 | int wanted = lua_tointeger(L, 2); |
| 1400 | struct hlua *hlua = hlua_gethlua(L); |
| 1401 | struct appctx *appctx; |
| 1402 | int len; |
| 1403 | int nblk; |
| 1404 | char *blk1; |
| 1405 | int len1; |
| 1406 | char *blk2; |
| 1407 | int len2; |
Thierry FOURNIER | 0054392 | 2015-03-09 18:35:06 +0100 | [diff] [blame] | 1408 | int skip_at_end = 0; |
Willy Tarreau | 8138967 | 2015-03-10 12:03:52 +0100 | [diff] [blame] | 1409 | struct channel *oc; |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1410 | |
| 1411 | /* Check if this lua stack is schedulable. */ |
| 1412 | if (!hlua || !hlua->task) |
| 1413 | WILL_LJMP(luaL_error(L, "The 'receive' function is only allowed in " |
| 1414 | "'frontend', 'backend' or 'task'")); |
| 1415 | |
| 1416 | /* check for connection closed. If some data where read, return it. */ |
| 1417 | if (!socket->s) |
| 1418 | goto connection_closed; |
| 1419 | |
Willy Tarreau | 94aa617 | 2015-03-13 14:19:06 +0100 | [diff] [blame] | 1420 | oc = &socket->s->res; |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1421 | if (wanted == HLSR_READ_LINE) { |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1422 | /* Read line. */ |
Willy Tarreau | 8138967 | 2015-03-10 12:03:52 +0100 | [diff] [blame] | 1423 | nblk = bo_getline_nc(oc, &blk1, &len1, &blk2, &len2); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1424 | if (nblk < 0) /* Connection close. */ |
| 1425 | goto connection_closed; |
| 1426 | if (nblk == 0) /* No data avalaible. */ |
| 1427 | goto connection_empty; |
Thierry FOURNIER | 0054392 | 2015-03-09 18:35:06 +0100 | [diff] [blame] | 1428 | |
| 1429 | /* remove final \r\n. */ |
| 1430 | if (nblk == 1) { |
| 1431 | if (blk1[len1-1] == '\n') { |
| 1432 | len1--; |
| 1433 | skip_at_end++; |
| 1434 | if (blk1[len1-1] == '\r') { |
| 1435 | len1--; |
| 1436 | skip_at_end++; |
| 1437 | } |
| 1438 | } |
| 1439 | } |
| 1440 | else { |
| 1441 | if (blk2[len2-1] == '\n') { |
| 1442 | len2--; |
| 1443 | skip_at_end++; |
| 1444 | if (blk2[len2-1] == '\r') { |
| 1445 | len2--; |
| 1446 | skip_at_end++; |
| 1447 | } |
| 1448 | } |
| 1449 | } |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1450 | } |
| 1451 | |
| 1452 | else if (wanted == HLSR_READ_ALL) { |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1453 | /* Read all the available data. */ |
Willy Tarreau | 8138967 | 2015-03-10 12:03:52 +0100 | [diff] [blame] | 1454 | nblk = bo_getblk_nc(oc, &blk1, &len1, &blk2, &len2); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1455 | if (nblk < 0) /* Connection close. */ |
| 1456 | goto connection_closed; |
| 1457 | if (nblk == 0) /* No data avalaible. */ |
| 1458 | goto connection_empty; |
| 1459 | } |
| 1460 | |
| 1461 | else { |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1462 | /* Read a block of data. */ |
Willy Tarreau | 8138967 | 2015-03-10 12:03:52 +0100 | [diff] [blame] | 1463 | nblk = bo_getblk_nc(oc, &blk1, &len1, &blk2, &len2); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1464 | if (nblk < 0) /* Connection close. */ |
| 1465 | goto connection_closed; |
| 1466 | if (nblk == 0) /* No data avalaible. */ |
| 1467 | goto connection_empty; |
| 1468 | |
| 1469 | if (len1 > wanted) { |
| 1470 | nblk = 1; |
| 1471 | len1 = wanted; |
| 1472 | } if (nblk == 2 && len1 + len2 > wanted) |
| 1473 | len2 = wanted - len1; |
| 1474 | } |
| 1475 | |
| 1476 | len = len1; |
| 1477 | |
| 1478 | luaL_addlstring(&socket->b, blk1, len1); |
| 1479 | if (nblk == 2) { |
| 1480 | len += len2; |
| 1481 | luaL_addlstring(&socket->b, blk2, len2); |
| 1482 | } |
| 1483 | |
| 1484 | /* Consume data. */ |
Willy Tarreau | 8138967 | 2015-03-10 12:03:52 +0100 | [diff] [blame] | 1485 | bo_skip(oc, len + skip_at_end); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1486 | |
| 1487 | /* Don't wait anything. */ |
| 1488 | si_update(&socket->s->si[0]); |
| 1489 | |
| 1490 | /* If the pattern reclaim to read all the data |
| 1491 | * in the connection, got out. |
| 1492 | */ |
| 1493 | if (wanted == HLSR_READ_ALL) |
| 1494 | goto connection_empty; |
| 1495 | else if (wanted >= 0 && len < wanted) |
| 1496 | goto connection_empty; |
| 1497 | |
| 1498 | /* Return result. */ |
| 1499 | luaL_pushresult(&socket->b); |
| 1500 | return 1; |
| 1501 | |
| 1502 | connection_closed: |
| 1503 | |
| 1504 | /* If the buffer containds data. */ |
| 1505 | if (socket->b.n > 0) { |
| 1506 | luaL_pushresult(&socket->b); |
| 1507 | return 1; |
| 1508 | } |
| 1509 | lua_pushnil(L); |
| 1510 | lua_pushstring(L, "connection closed."); |
| 1511 | return 2; |
| 1512 | |
| 1513 | connection_empty: |
| 1514 | |
| 1515 | appctx = objt_appctx(socket->s->si[0].end); |
| 1516 | if (!hlua_com_new(hlua, &appctx->ctx.hlua.wake_on_read)) |
| 1517 | WILL_LJMP(luaL_error(L, "out of memory")); |
Thierry FOURNIER | 4abd3ae | 2015-03-03 17:29:06 +0100 | [diff] [blame] | 1518 | WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_socket_receive_yield, TICK_ETERNITY, 0)); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1519 | return 0; |
| 1520 | } |
| 1521 | |
| 1522 | /* This Lus function gets two parameters. The first one can be string |
| 1523 | * or a number. If the string is "*l", the user require one line. If |
| 1524 | * the string is "*a", the user require all the content of the stream. |
| 1525 | * If the value is a number, the user require a number of bytes equal |
| 1526 | * to the value. The default value is "*l" (a line). |
| 1527 | * |
| 1528 | * This paraeter with a variable type is converted in integer. This |
| 1529 | * integer takes this values: |
| 1530 | * -1 : read a line |
| 1531 | * -2 : read all the stream |
| 1532 | * >0 : amount if bytes. |
| 1533 | * |
| 1534 | * The second parameter is optinal. It contains a string that must be |
| 1535 | * concatenated with the read data. |
| 1536 | */ |
| 1537 | __LJMP static int hlua_socket_receive(struct lua_State *L) |
| 1538 | { |
| 1539 | int wanted = HLSR_READ_LINE; |
| 1540 | const char *pattern; |
| 1541 | int type; |
| 1542 | char *error; |
| 1543 | size_t len; |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 1544 | struct hlua_socket *socket; |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1545 | |
| 1546 | if (lua_gettop(L) < 1 || lua_gettop(L) > 3) |
| 1547 | WILL_LJMP(luaL_error(L, "The 'receive' function requires between 1 and 3 arguments.")); |
| 1548 | |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 1549 | socket = MAY_LJMP(hlua_checksocket(L, 1)); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1550 | |
| 1551 | /* check for pattern. */ |
| 1552 | if (lua_gettop(L) >= 2) { |
| 1553 | type = lua_type(L, 2); |
| 1554 | if (type == LUA_TSTRING) { |
| 1555 | pattern = lua_tostring(L, 2); |
| 1556 | if (strcmp(pattern, "*a") == 0) |
| 1557 | wanted = HLSR_READ_ALL; |
| 1558 | else if (strcmp(pattern, "*l") == 0) |
| 1559 | wanted = HLSR_READ_LINE; |
| 1560 | else { |
| 1561 | wanted = strtoll(pattern, &error, 10); |
| 1562 | if (*error != '\0') |
| 1563 | WILL_LJMP(luaL_error(L, "Unsupported pattern.")); |
| 1564 | } |
| 1565 | } |
| 1566 | else if (type == LUA_TNUMBER) { |
| 1567 | wanted = lua_tointeger(L, 2); |
| 1568 | if (wanted < 0) |
| 1569 | WILL_LJMP(luaL_error(L, "Unsupported size.")); |
| 1570 | } |
| 1571 | } |
| 1572 | |
| 1573 | /* Set pattern. */ |
| 1574 | lua_pushinteger(L, wanted); |
| 1575 | lua_replace(L, 2); |
| 1576 | |
| 1577 | /* init bufffer, and fiil it wih prefix. */ |
| 1578 | luaL_buffinit(L, &socket->b); |
| 1579 | |
| 1580 | /* Check prefix. */ |
| 1581 | if (lua_gettop(L) >= 3) { |
| 1582 | if (lua_type(L, 3) != LUA_TSTRING) |
| 1583 | WILL_LJMP(luaL_error(L, "Expect a 'string' for the prefix")); |
| 1584 | pattern = lua_tolstring(L, 3, &len); |
| 1585 | luaL_addlstring(&socket->b, pattern, len); |
| 1586 | } |
| 1587 | |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 1588 | return __LJMP(hlua_socket_receive_yield(L, 0, 0)); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1589 | } |
| 1590 | |
| 1591 | /* Write the Lua input string in the output buffer. |
| 1592 | * This fucntion returns a yield if no space are available. |
| 1593 | */ |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 1594 | static int hlua_socket_write_yield(struct lua_State *L,int status, lua_KContext ctx) |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1595 | { |
| 1596 | struct hlua_socket *socket; |
| 1597 | struct hlua *hlua = hlua_gethlua(L); |
| 1598 | struct appctx *appctx; |
| 1599 | size_t buf_len; |
| 1600 | const char *buf; |
| 1601 | int len; |
| 1602 | int send_len; |
| 1603 | int sent; |
| 1604 | |
| 1605 | /* Check if this lua stack is schedulable. */ |
| 1606 | if (!hlua || !hlua->task) |
| 1607 | WILL_LJMP(luaL_error(L, "The 'write' function is only allowed in " |
| 1608 | "'frontend', 'backend' or 'task'")); |
| 1609 | |
| 1610 | /* Get object */ |
| 1611 | socket = MAY_LJMP(hlua_checksocket(L, 1)); |
| 1612 | buf = MAY_LJMP(luaL_checklstring(L, 2, &buf_len)); |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 1613 | sent = MAY_LJMP(luaL_checkinteger(L, 3)); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1614 | |
| 1615 | /* Check for connection close. */ |
Willy Tarreau | 22ec1ea | 2014-11-27 20:45:39 +0100 | [diff] [blame] | 1616 | if (!socket->s || channel_output_closed(&socket->s->req)) { |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1617 | lua_pushinteger(L, -1); |
| 1618 | return 1; |
| 1619 | } |
| 1620 | |
| 1621 | /* Update the input buffer data. */ |
| 1622 | buf += sent; |
| 1623 | send_len = buf_len - sent; |
| 1624 | |
| 1625 | /* All the data are sent. */ |
| 1626 | if (sent >= buf_len) |
| 1627 | return 1; /* Implicitly return the length sent. */ |
| 1628 | |
Thierry FOURNIER | 486d52a | 2015-03-09 17:51:43 +0100 | [diff] [blame] | 1629 | /* Check if the buffer is avalaible because HAProxy doesn't allocate |
| 1630 | * the request buffer if its not required. |
| 1631 | */ |
Willy Tarreau | 22ec1ea | 2014-11-27 20:45:39 +0100 | [diff] [blame] | 1632 | if (socket->s->req.buf->size == 0) { |
Willy Tarreau | 78955f4 | 2014-12-28 13:09:02 +0100 | [diff] [blame] | 1633 | if (!session_alloc_recv_buffer(&socket->s->req)) { |
Willy Tarreau | 350f487 | 2014-11-28 14:42:25 +0100 | [diff] [blame] | 1634 | socket->s->si[0].flags |= SI_FL_WAIT_ROOM; |
Thierry FOURNIER | 486d52a | 2015-03-09 17:51:43 +0100 | [diff] [blame] | 1635 | goto hlua_socket_write_yield_return; |
| 1636 | } |
| 1637 | } |
| 1638 | |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1639 | /* Check for avalaible space. */ |
Willy Tarreau | 94aa617 | 2015-03-13 14:19:06 +0100 | [diff] [blame] | 1640 | len = buffer_total_space(socket->s->req.buf); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1641 | if (len <= 0) |
| 1642 | goto hlua_socket_write_yield_return; |
| 1643 | |
| 1644 | /* send data */ |
| 1645 | if (len < send_len) |
| 1646 | send_len = len; |
Willy Tarreau | 94aa617 | 2015-03-13 14:19:06 +0100 | [diff] [blame] | 1647 | len = bi_putblk(&socket->s->req, buf+sent, send_len); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1648 | |
| 1649 | /* "Not enough space" (-1), "Buffer too little to contain |
| 1650 | * the data" (-2) are not expected because the available length |
| 1651 | * is tested. |
| 1652 | * Other unknown error are also not expected. |
| 1653 | */ |
| 1654 | if (len <= 0) { |
Willy Tarreau | bc18da1 | 2015-03-13 14:00:47 +0100 | [diff] [blame] | 1655 | if (len == -1) |
Willy Tarreau | 94aa617 | 2015-03-13 14:19:06 +0100 | [diff] [blame] | 1656 | socket->s->req.flags |= CF_WAKE_WRITE; |
Willy Tarreau | bc18da1 | 2015-03-13 14:00:47 +0100 | [diff] [blame] | 1657 | |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1658 | MAY_LJMP(hlua_socket_close(L)); |
| 1659 | lua_pop(L, 1); |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 1660 | lua_pushinteger(L, -1); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1661 | return 1; |
| 1662 | } |
| 1663 | |
| 1664 | /* update buffers. */ |
| 1665 | si_update(&socket->s->si[0]); |
Willy Tarreau | 94aa617 | 2015-03-13 14:19:06 +0100 | [diff] [blame] | 1666 | socket->s->req.rex = TICK_ETERNITY; |
| 1667 | socket->s->res.wex = TICK_ETERNITY; |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1668 | |
| 1669 | /* Update length sent. */ |
| 1670 | lua_pop(L, 1); |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 1671 | lua_pushinteger(L, sent + len); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1672 | |
| 1673 | /* All the data buffer is sent ? */ |
| 1674 | if (sent + len >= buf_len) |
| 1675 | return 1; |
| 1676 | |
| 1677 | hlua_socket_write_yield_return: |
| 1678 | appctx = objt_appctx(socket->s->si[0].end); |
| 1679 | if (!hlua_com_new(hlua, &appctx->ctx.hlua.wake_on_write)) |
| 1680 | WILL_LJMP(luaL_error(L, "out of memory")); |
Thierry FOURNIER | 4abd3ae | 2015-03-03 17:29:06 +0100 | [diff] [blame] | 1681 | WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_socket_write_yield, TICK_ETERNITY, 0)); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1682 | return 0; |
| 1683 | } |
| 1684 | |
| 1685 | /* This function initiate the send of data. It just check the input |
| 1686 | * parameters and push an integer in the Lua stack that contain the |
| 1687 | * amount of data writed in the buffer. This is used by the function |
| 1688 | * "hlua_socket_write_yield" that can yield. |
| 1689 | * |
| 1690 | * The Lua function gets between 3 and 4 parameters. The first one is |
| 1691 | * the associated object. The second is a string buffer. The third is |
| 1692 | * a facultative integer that represents where is the buffer position |
| 1693 | * of the start of the data that can send. The first byte is the |
| 1694 | * position "1". The default value is "1". The fourth argument is a |
| 1695 | * facultative integer that represents where is the buffer position |
| 1696 | * of the end of the data that can send. The default is the last byte. |
| 1697 | */ |
| 1698 | static int hlua_socket_send(struct lua_State *L) |
| 1699 | { |
| 1700 | int i; |
| 1701 | int j; |
| 1702 | const char *buf; |
| 1703 | size_t buf_len; |
| 1704 | |
| 1705 | /* Check number of arguments. */ |
| 1706 | if (lua_gettop(L) < 2 || lua_gettop(L) > 4) |
| 1707 | WILL_LJMP(luaL_error(L, "'send' needs between 2 and 4 arguments")); |
| 1708 | |
| 1709 | /* Get the string. */ |
| 1710 | buf = MAY_LJMP(luaL_checklstring(L, 2, &buf_len)); |
| 1711 | |
| 1712 | /* Get and check j. */ |
| 1713 | if (lua_gettop(L) == 4) { |
| 1714 | j = MAY_LJMP(luaL_checkinteger(L, 4)); |
| 1715 | if (j < 0) |
| 1716 | j = buf_len + j + 1; |
| 1717 | if (j > buf_len) |
| 1718 | j = buf_len + 1; |
| 1719 | lua_pop(L, 1); |
| 1720 | } |
| 1721 | else |
| 1722 | j = buf_len; |
| 1723 | |
| 1724 | /* Get and check i. */ |
| 1725 | if (lua_gettop(L) == 3) { |
| 1726 | i = MAY_LJMP(luaL_checkinteger(L, 3)); |
| 1727 | if (i < 0) |
| 1728 | i = buf_len + i + 1; |
| 1729 | if (i > buf_len) |
| 1730 | i = buf_len + 1; |
| 1731 | lua_pop(L, 1); |
| 1732 | } else |
| 1733 | i = 1; |
| 1734 | |
| 1735 | /* Check bth i and j. */ |
| 1736 | if (i > j) { |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 1737 | lua_pushinteger(L, 0); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1738 | return 1; |
| 1739 | } |
| 1740 | if (i == 0 && j == 0) { |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 1741 | lua_pushinteger(L, 0); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1742 | return 1; |
| 1743 | } |
| 1744 | if (i == 0) |
| 1745 | i = 1; |
| 1746 | if (j == 0) |
| 1747 | j = 1; |
| 1748 | |
| 1749 | /* Pop the string. */ |
| 1750 | lua_pop(L, 1); |
| 1751 | |
| 1752 | /* Update the buffer length. */ |
| 1753 | buf += i - 1; |
| 1754 | buf_len = j - i + 1; |
| 1755 | lua_pushlstring(L, buf, buf_len); |
| 1756 | |
| 1757 | /* This unsigned is used to remember the amount of sent data. */ |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 1758 | lua_pushinteger(L, 0); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1759 | |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 1760 | return MAY_LJMP(hlua_socket_write_yield(L, 0, 0)); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1761 | } |
| 1762 | |
| 1763 | #define SOCKET_INFO_EXPANDED_FORM "[0000:0000:0000:0000:0000:0000:0000:0000]:12345" |
| 1764 | static char _socket_info_expanded_form[] = SOCKET_INFO_EXPANDED_FORM; |
| 1765 | #define SOCKET_INFO_MAX_LEN (sizeof(_socket_info_expanded_form)) |
| 1766 | __LJMP static inline int hlua_socket_info(struct lua_State *L, struct sockaddr_storage *addr) |
| 1767 | { |
| 1768 | static char buffer[SOCKET_INFO_MAX_LEN]; |
| 1769 | int ret; |
| 1770 | int len; |
| 1771 | char *p; |
| 1772 | |
| 1773 | ret = addr_to_str(addr, buffer+1, SOCKET_INFO_MAX_LEN-1); |
| 1774 | if (ret <= 0) { |
| 1775 | lua_pushnil(L); |
| 1776 | return 1; |
| 1777 | } |
| 1778 | |
| 1779 | if (ret == AF_UNIX) { |
| 1780 | lua_pushstring(L, buffer+1); |
| 1781 | return 1; |
| 1782 | } |
| 1783 | else if (ret == AF_INET6) { |
| 1784 | buffer[0] = '['; |
| 1785 | len = strlen(buffer); |
| 1786 | buffer[len] = ']'; |
| 1787 | len++; |
| 1788 | buffer[len] = ':'; |
| 1789 | len++; |
| 1790 | p = buffer; |
| 1791 | } |
| 1792 | else if (ret == AF_INET) { |
| 1793 | p = buffer + 1; |
| 1794 | len = strlen(p); |
| 1795 | p[len] = ':'; |
| 1796 | len++; |
| 1797 | } |
| 1798 | else { |
| 1799 | lua_pushnil(L); |
| 1800 | return 1; |
| 1801 | } |
| 1802 | |
| 1803 | if (port_to_str(addr, p + len, SOCKET_INFO_MAX_LEN-1 - len) <= 0) { |
| 1804 | lua_pushnil(L); |
| 1805 | return 1; |
| 1806 | } |
| 1807 | |
| 1808 | lua_pushstring(L, p); |
| 1809 | return 1; |
| 1810 | } |
| 1811 | |
| 1812 | /* Returns information about the peer of the connection. */ |
| 1813 | __LJMP static int hlua_socket_getpeername(struct lua_State *L) |
| 1814 | { |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 1815 | struct hlua_socket *socket; |
| 1816 | struct connection *conn; |
| 1817 | |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1818 | MAY_LJMP(check_args(L, 1, "getpeername")); |
| 1819 | |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 1820 | socket = MAY_LJMP(hlua_checksocket(L, 1)); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1821 | |
| 1822 | /* Check if the tcp object is avalaible. */ |
| 1823 | if (!socket->s) { |
| 1824 | lua_pushnil(L); |
| 1825 | return 1; |
| 1826 | } |
| 1827 | |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 1828 | conn = objt_conn(socket->s->si[1].end); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1829 | if (!conn) { |
| 1830 | lua_pushnil(L); |
| 1831 | return 1; |
| 1832 | } |
| 1833 | |
| 1834 | if (!(conn->flags & CO_FL_ADDR_TO_SET)) { |
| 1835 | unsigned int salen = sizeof(conn->addr.to); |
| 1836 | if (getpeername(conn->t.sock.fd, (struct sockaddr *)&conn->addr.to, &salen) == -1) { |
| 1837 | lua_pushnil(L); |
| 1838 | return 1; |
| 1839 | } |
| 1840 | conn->flags |= CO_FL_ADDR_TO_SET; |
| 1841 | } |
| 1842 | |
| 1843 | return MAY_LJMP(hlua_socket_info(L, &conn->addr.to)); |
| 1844 | } |
| 1845 | |
| 1846 | /* Returns information about my connection side. */ |
| 1847 | static int hlua_socket_getsockname(struct lua_State *L) |
| 1848 | { |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 1849 | struct hlua_socket *socket; |
| 1850 | struct connection *conn; |
| 1851 | |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1852 | MAY_LJMP(check_args(L, 1, "getsockname")); |
| 1853 | |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 1854 | socket = MAY_LJMP(hlua_checksocket(L, 1)); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1855 | |
| 1856 | /* Check if the tcp object is avalaible. */ |
| 1857 | if (!socket->s) { |
| 1858 | lua_pushnil(L); |
| 1859 | return 1; |
| 1860 | } |
| 1861 | |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 1862 | conn = objt_conn(socket->s->si[1].end); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1863 | if (!conn) { |
| 1864 | lua_pushnil(L); |
| 1865 | return 1; |
| 1866 | } |
| 1867 | |
| 1868 | if (!(conn->flags & CO_FL_ADDR_FROM_SET)) { |
| 1869 | unsigned int salen = sizeof(conn->addr.from); |
| 1870 | if (getsockname(conn->t.sock.fd, (struct sockaddr *)&conn->addr.from, &salen) == -1) { |
| 1871 | lua_pushnil(L); |
| 1872 | return 1; |
| 1873 | } |
| 1874 | conn->flags |= CO_FL_ADDR_FROM_SET; |
| 1875 | } |
| 1876 | |
| 1877 | return hlua_socket_info(L, &conn->addr.from); |
| 1878 | } |
| 1879 | |
| 1880 | /* This struct define the applet. */ |
| 1881 | static struct si_applet update_applet = { |
| 1882 | .obj_type = OBJ_TYPE_APPLET, |
| 1883 | .name = "<LUA_TCP>", |
| 1884 | .fct = hlua_socket_handler, |
| 1885 | .release = hlua_socket_release, |
| 1886 | }; |
| 1887 | |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 1888 | __LJMP static int hlua_socket_connect_yield(struct lua_State *L, int status, lua_KContext ctx) |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1889 | { |
| 1890 | struct hlua_socket *socket = MAY_LJMP(hlua_checksocket(L, 1)); |
| 1891 | struct hlua *hlua = hlua_gethlua(L); |
| 1892 | struct appctx *appctx; |
| 1893 | |
| 1894 | /* Check for connection close. */ |
Willy Tarreau | 22ec1ea | 2014-11-27 20:45:39 +0100 | [diff] [blame] | 1895 | if (!hlua || !socket->s || channel_output_closed(&socket->s->req)) { |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1896 | lua_pushnil(L); |
| 1897 | lua_pushstring(L, "Can't connect"); |
| 1898 | return 2; |
| 1899 | } |
| 1900 | |
| 1901 | appctx = objt_appctx(socket->s->si[0].end); |
| 1902 | |
| 1903 | /* Check for connection established. */ |
| 1904 | if (appctx->ctx.hlua.connected) { |
| 1905 | lua_pushinteger(L, 1); |
| 1906 | return 1; |
| 1907 | } |
| 1908 | |
| 1909 | if (!hlua_com_new(hlua, &appctx->ctx.hlua.wake_on_write)) |
| 1910 | WILL_LJMP(luaL_error(L, "out of memory error")); |
Thierry FOURNIER | 4abd3ae | 2015-03-03 17:29:06 +0100 | [diff] [blame] | 1911 | WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_socket_connect_yield, TICK_ETERNITY, 0)); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1912 | return 0; |
| 1913 | } |
| 1914 | |
| 1915 | /* This function fail or initite the connection. */ |
| 1916 | __LJMP static int hlua_socket_connect(struct lua_State *L) |
| 1917 | { |
| 1918 | struct hlua_socket *socket; |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 1919 | int port; |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1920 | const char *ip; |
| 1921 | struct connection *conn; |
Thierry FOURNIER | 95ad96a | 2015-03-09 18:12:40 +0100 | [diff] [blame] | 1922 | struct hlua *hlua; |
| 1923 | struct appctx *appctx; |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1924 | |
| 1925 | MAY_LJMP(check_args(L, 3, "connect")); |
| 1926 | |
| 1927 | /* Get args. */ |
| 1928 | socket = MAY_LJMP(hlua_checksocket(L, 1)); |
| 1929 | ip = MAY_LJMP(luaL_checkstring(L, 2)); |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 1930 | port = MAY_LJMP(luaL_checkinteger(L, 3)); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1931 | |
Willy Tarreau | 350f487 | 2014-11-28 14:42:25 +0100 | [diff] [blame] | 1932 | conn = si_alloc_conn(&socket->s->si[1], 0); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1933 | if (!conn) |
| 1934 | WILL_LJMP(luaL_error(L, "connect: internal error")); |
| 1935 | |
| 1936 | /* Parse ip address. */ |
| 1937 | conn->addr.to.ss_family = AF_UNSPEC; |
| 1938 | if (!str2ip2(ip, &conn->addr.to, 0)) |
| 1939 | WILL_LJMP(luaL_error(L, "connect: cannot parse ip address '%s'", ip)); |
| 1940 | |
| 1941 | /* Set port. */ |
| 1942 | if (conn->addr.to.ss_family == AF_INET) |
| 1943 | ((struct sockaddr_in *)&conn->addr.to)->sin_port = htons(port); |
| 1944 | else if (conn->addr.to.ss_family == AF_INET6) |
| 1945 | ((struct sockaddr_in6 *)&conn->addr.to)->sin6_port = htons(port); |
| 1946 | |
| 1947 | /* it is important not to call the wakeup function directly but to |
| 1948 | * pass through task_wakeup(), because this one knows how to apply |
| 1949 | * priorities to tasks. |
| 1950 | */ |
| 1951 | task_wakeup(socket->s->task, TASK_WOKEN_INIT); |
| 1952 | |
Thierry FOURNIER | 95ad96a | 2015-03-09 18:12:40 +0100 | [diff] [blame] | 1953 | hlua = hlua_gethlua(L); |
| 1954 | appctx = objt_appctx(socket->s->si[0].end); |
| 1955 | if (!hlua_com_new(hlua, &appctx->ctx.hlua.wake_on_write)) |
| 1956 | WILL_LJMP(luaL_error(L, "out of memory")); |
Thierry FOURNIER | 4abd3ae | 2015-03-03 17:29:06 +0100 | [diff] [blame] | 1957 | WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_socket_connect_yield, TICK_ETERNITY, 0)); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1958 | |
| 1959 | return 0; |
| 1960 | } |
| 1961 | |
Baptiste Assmann | 84bb493 | 2015-03-02 21:40:06 +0100 | [diff] [blame] | 1962 | #ifdef USE_OPENSSL |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1963 | __LJMP static int hlua_socket_connect_ssl(struct lua_State *L) |
| 1964 | { |
| 1965 | struct hlua_socket *socket; |
| 1966 | |
| 1967 | MAY_LJMP(check_args(L, 3, "connect_ssl")); |
| 1968 | socket = MAY_LJMP(hlua_checksocket(L, 1)); |
| 1969 | socket->s->target = &socket_ssl.obj_type; |
| 1970 | return MAY_LJMP(hlua_socket_connect(L)); |
| 1971 | } |
Baptiste Assmann | 84bb493 | 2015-03-02 21:40:06 +0100 | [diff] [blame] | 1972 | #endif |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1973 | |
| 1974 | __LJMP static int hlua_socket_setoption(struct lua_State *L) |
| 1975 | { |
| 1976 | return 0; |
| 1977 | } |
| 1978 | |
| 1979 | __LJMP static int hlua_socket_settimeout(struct lua_State *L) |
| 1980 | { |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 1981 | struct hlua_socket *socket; |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 1982 | int tmout; |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 1983 | |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1984 | MAY_LJMP(check_args(L, 2, "settimeout")); |
| 1985 | |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 1986 | socket = MAY_LJMP(hlua_checksocket(L, 1)); |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 1987 | tmout = MAY_LJMP(luaL_checkinteger(L, 2)) * 1000; |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1988 | |
Willy Tarreau | 22ec1ea | 2014-11-27 20:45:39 +0100 | [diff] [blame] | 1989 | socket->s->req.rto = tmout; |
| 1990 | socket->s->req.wto = tmout; |
| 1991 | socket->s->res.rto = tmout; |
| 1992 | socket->s->res.wto = tmout; |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 1993 | |
| 1994 | return 0; |
| 1995 | } |
| 1996 | |
| 1997 | __LJMP static int hlua_socket_new(lua_State *L) |
| 1998 | { |
| 1999 | struct hlua_socket *socket; |
| 2000 | struct appctx *appctx; |
| 2001 | |
| 2002 | /* Check stack size. */ |
Thierry FOURNIER | 2297bc2 | 2015-03-11 17:43:33 +0100 | [diff] [blame] | 2003 | if (!lua_checkstack(L, 3)) { |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 2004 | hlua_pusherror(L, "socket: full stack"); |
| 2005 | goto out_fail_conf; |
| 2006 | } |
| 2007 | |
Thierry FOURNIER | 2297bc2 | 2015-03-11 17:43:33 +0100 | [diff] [blame] | 2008 | /* Create the object: obj[0] = userdata. */ |
| 2009 | lua_newtable(L); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 2010 | socket = MAY_LJMP(lua_newuserdata(L, sizeof(*socket))); |
Thierry FOURNIER | 2297bc2 | 2015-03-11 17:43:33 +0100 | [diff] [blame] | 2011 | lua_rawseti(L, -2, 0); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 2012 | memset(socket, 0, sizeof(*socket)); |
| 2013 | |
Thierry FOURNIER | 4a6170c | 2015-03-09 17:07:10 +0100 | [diff] [blame] | 2014 | /* Check if the various memory pools are intialized. */ |
Willy Tarreau | a27dc19 | 2014-11-27 22:10:04 +0100 | [diff] [blame] | 2015 | if (!pool2_session || !pool2_buffer) { |
Thierry FOURNIER | 4a6170c | 2015-03-09 17:07:10 +0100 | [diff] [blame] | 2016 | hlua_pusherror(L, "socket: uninitialized pools."); |
| 2017 | goto out_fail_conf; |
| 2018 | } |
| 2019 | |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 2020 | /* Pop a class session metatable and affect it to the userdata. */ |
| 2021 | lua_rawgeti(L, LUA_REGISTRYINDEX, class_socket_ref); |
| 2022 | lua_setmetatable(L, -2); |
| 2023 | |
| 2024 | /* |
| 2025 | * |
| 2026 | * Get memory for the request. |
| 2027 | * |
| 2028 | */ |
| 2029 | |
| 2030 | socket->s = pool_alloc2(pool2_session); |
| 2031 | if (!socket->s) { |
| 2032 | hlua_pusherror(L, "socket: out of memory"); |
| 2033 | goto out_fail_conf; |
| 2034 | } |
| 2035 | |
| 2036 | socket->s->task = task_new(); |
| 2037 | if (!socket->s->task) { |
| 2038 | hlua_pusherror(L, "socket: out of memory"); |
| 2039 | goto out_free_session; |
| 2040 | } |
| 2041 | |
Willy Tarreau | 22ec1ea | 2014-11-27 20:45:39 +0100 | [diff] [blame] | 2042 | socket->s->req.buf = pool_alloc2(pool2_buffer); |
| 2043 | if (!socket->s->req.buf) { |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 2044 | hlua_pusherror(L, "socket: out of memory"); |
| 2045 | goto out_fail_req_buf; |
| 2046 | } |
| 2047 | |
Willy Tarreau | 22ec1ea | 2014-11-27 20:45:39 +0100 | [diff] [blame] | 2048 | socket->s->res.buf = pool_alloc2(pool2_buffer); |
| 2049 | if (!socket->s->res.buf) { |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 2050 | hlua_pusherror(L, "socket: out of memory"); |
| 2051 | goto out_fail_rep_buf; |
| 2052 | } |
| 2053 | |
| 2054 | /* Configura empty Lua for the session. */ |
| 2055 | socket->s->hlua.T = NULL; |
| 2056 | socket->s->hlua.Tref = LUA_REFNIL; |
| 2057 | socket->s->hlua.Mref = LUA_REFNIL; |
| 2058 | socket->s->hlua.nargs = 0; |
Thierry FOURNIER | a097fdf | 2015-03-03 15:17:35 +0100 | [diff] [blame] | 2059 | socket->s->hlua.flags = 0; |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 2060 | LIST_INIT(&socket->s->hlua.com); |
| 2061 | |
| 2062 | /* session initialisation. */ |
| 2063 | session_init_srv_conn(socket->s); |
| 2064 | |
| 2065 | /* |
| 2066 | * |
| 2067 | * Configure the associated task. |
| 2068 | * |
| 2069 | */ |
| 2070 | |
| 2071 | /* This is the dedicated function to process the session. This function |
| 2072 | * is able to establish the conection, process the timeouts, etc ... |
| 2073 | */ |
| 2074 | socket->s->task->process = process_session; |
| 2075 | |
| 2076 | /* Back reference to session. This is used by process_session(). */ |
| 2077 | socket->s->task->context = socket->s; |
| 2078 | |
| 2079 | /* The priority of the task is normal. */ |
| 2080 | socket->s->task->nice = 0; |
| 2081 | |
| 2082 | /* Init the next run to eternity. Later in this function, this task is |
| 2083 | * waked. |
| 2084 | */ |
| 2085 | socket->s->task->expire = TICK_ETERNITY; |
| 2086 | |
| 2087 | /* |
| 2088 | * |
| 2089 | * Initialize the attached buffers |
| 2090 | * |
| 2091 | */ |
Willy Tarreau | 22ec1ea | 2014-11-27 20:45:39 +0100 | [diff] [blame] | 2092 | socket->s->req.buf->size = global.tune.bufsize; |
| 2093 | socket->s->res.buf->size = global.tune.bufsize; |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 2094 | |
| 2095 | /* |
| 2096 | * |
| 2097 | * Initialize channels. |
| 2098 | * |
| 2099 | */ |
| 2100 | |
| 2101 | /* This function reset the struct. It must be called |
| 2102 | * before the configuration. |
| 2103 | */ |
Willy Tarreau | 22ec1ea | 2014-11-27 20:45:39 +0100 | [diff] [blame] | 2104 | channel_init(&socket->s->req); |
| 2105 | channel_init(&socket->s->res); |
Willy Tarreau | ef573c0 | 2014-11-28 14:17:09 +0100 | [diff] [blame] | 2106 | socket->s->res.flags |= CF_ISRESP; |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 2107 | |
Willy Tarreau | 22ec1ea | 2014-11-27 20:45:39 +0100 | [diff] [blame] | 2108 | socket->s->req.analysers = 0; |
| 2109 | socket->s->req.rto = socket_proxy.timeout.client; |
| 2110 | socket->s->req.wto = socket_proxy.timeout.server; |
| 2111 | socket->s->req.rex = TICK_ETERNITY; |
| 2112 | socket->s->req.wex = TICK_ETERNITY; |
| 2113 | socket->s->req.analyse_exp = TICK_ETERNITY; |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 2114 | |
Willy Tarreau | 22ec1ea | 2014-11-27 20:45:39 +0100 | [diff] [blame] | 2115 | socket->s->res.analysers = 0; |
| 2116 | socket->s->res.rto = socket_proxy.timeout.server; |
| 2117 | socket->s->res.wto = socket_proxy.timeout.client; |
| 2118 | socket->s->res.rex = TICK_ETERNITY; |
| 2119 | socket->s->res.wex = TICK_ETERNITY; |
| 2120 | socket->s->res.analyse_exp = TICK_ETERNITY; |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 2121 | |
| 2122 | /* |
| 2123 | * |
| 2124 | * Configure the session. |
| 2125 | * |
| 2126 | */ |
| 2127 | |
| 2128 | /* The session dont have listener. The listener is used with real |
| 2129 | * proxies. |
| 2130 | */ |
| 2131 | socket->s->listener = NULL; |
| 2132 | |
| 2133 | /* The flags are initialized to 0. Values are setted later. */ |
| 2134 | socket->s->flags = 0; |
| 2135 | |
| 2136 | /* Assign the configured proxy to the new session. */ |
| 2137 | socket->s->be = &socket_proxy; |
| 2138 | socket->s->fe = &socket_proxy; |
| 2139 | |
| 2140 | /* XXX: Set namy variables */ |
| 2141 | socket->s->store_count = 0; |
| 2142 | memset(socket->s->stkctr, 0, sizeof(socket->s->stkctr)); |
| 2143 | |
| 2144 | /* Configure logs. */ |
| 2145 | socket->s->logs.logwait = 0; |
| 2146 | socket->s->logs.level = 0; |
| 2147 | socket->s->logs.accept_date = date; /* user-visible date for logging */ |
| 2148 | socket->s->logs.tv_accept = now; /* corrected date for internal use */ |
| 2149 | socket->s->do_log = NULL; |
| 2150 | |
| 2151 | /* Function used if an error is occured. */ |
| 2152 | socket->s->srv_error = default_srv_error; |
| 2153 | |
| 2154 | /* Init the list of buffers. */ |
| 2155 | LIST_INIT(&socket->s->buffer_wait); |
| 2156 | |
| 2157 | /* Dont configure the unique ID. */ |
| 2158 | socket->s->uniq_id = 0; |
| 2159 | socket->s->unique_id = NULL; |
| 2160 | |
| 2161 | /* XXX: ? */ |
| 2162 | socket->s->pend_pos = NULL; |
| 2163 | |
| 2164 | /* XXX: See later. */ |
| 2165 | socket->s->txn.sessid = NULL; |
| 2166 | socket->s->txn.srv_cookie = NULL; |
| 2167 | socket->s->txn.cli_cookie = NULL; |
| 2168 | socket->s->txn.uri = NULL; |
| 2169 | socket->s->txn.req.cap = NULL; |
| 2170 | socket->s->txn.rsp.cap = NULL; |
| 2171 | socket->s->txn.hdr_idx.v = NULL; |
| 2172 | socket->s->txn.hdr_idx.size = 0; |
| 2173 | socket->s->txn.hdr_idx.used = 0; |
| 2174 | |
| 2175 | /* Configure "left" stream interface as applet. This "si" produce |
| 2176 | * and use the data received from the server. The applet is initialized |
| 2177 | * and is attached to the stream interface. |
| 2178 | */ |
| 2179 | |
| 2180 | /* The data producer is already connected. It is the applet. */ |
Willy Tarreau | 22ec1ea | 2014-11-27 20:45:39 +0100 | [diff] [blame] | 2181 | socket->s->req.flags = CF_READ_ATTACHED; |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 2182 | |
Willy Tarreau | 22ec1ea | 2014-11-27 20:45:39 +0100 | [diff] [blame] | 2183 | channel_auto_connect(&socket->s->req); /* don't wait to establish connection */ |
| 2184 | channel_auto_close(&socket->s->req); /* let the producer forward close requests */ |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 2185 | |
Willy Tarreau | a5f5d8d | 2014-11-28 11:26:07 +0100 | [diff] [blame] | 2186 | socket->s->si[0].flags = SI_FL_NONE; |
Willy Tarreau | 819d332 | 2014-11-28 12:12:34 +0100 | [diff] [blame] | 2187 | si_reset(&socket->s->si[0]); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 2188 | si_set_state(&socket->s->si[0], SI_ST_EST); /* connection established (resource exists) */ |
| 2189 | |
| 2190 | appctx = stream_int_register_handler(&socket->s->si[0], &update_applet); |
| 2191 | if (!appctx) |
| 2192 | goto out_fail_conn1; |
| 2193 | appctx->ctx.hlua.socket = socket; |
| 2194 | appctx->ctx.hlua.connected = 0; |
| 2195 | LIST_INIT(&appctx->ctx.hlua.wake_on_write); |
| 2196 | LIST_INIT(&appctx->ctx.hlua.wake_on_read); |
| 2197 | |
| 2198 | /* Configure "right" stream interface. this "si" is used to connect |
| 2199 | * and retrieve data from the server. The connection is initialized |
| 2200 | * with the "struct server". |
| 2201 | */ |
Willy Tarreau | a5f5d8d | 2014-11-28 11:26:07 +0100 | [diff] [blame] | 2202 | socket->s->si[1].flags = SI_FL_ISBACK; |
Willy Tarreau | 819d332 | 2014-11-28 12:12:34 +0100 | [diff] [blame] | 2203 | si_reset(&socket->s->si[1]); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 2204 | si_set_state(&socket->s->si[1], SI_ST_INI); |
| 2205 | socket->s->si[1].conn_retries = socket_proxy.conn_retries; |
| 2206 | |
| 2207 | /* Force destination server. */ |
| 2208 | socket->s->flags |= SN_DIRECT | SN_ASSIGNED | SN_ADDR_SET | SN_BE_ASSIGNED; |
| 2209 | socket->s->target = &socket_tcp.obj_type; |
| 2210 | |
| 2211 | /* This session is added to te lists of alive sessions. */ |
| 2212 | LIST_ADDQ(&sessions, &socket->s->list); |
| 2213 | |
| 2214 | /* XXX: I think that this list is used by stats. */ |
| 2215 | LIST_INIT(&socket->s->back_refs); |
| 2216 | |
| 2217 | /* Update statistics counters. */ |
| 2218 | socket_proxy.feconn++; /* beconn will be increased later */ |
| 2219 | jobs++; |
| 2220 | totalconn++; |
| 2221 | |
| 2222 | /* Return yield waiting for connection. */ |
| 2223 | return 1; |
| 2224 | |
| 2225 | out_fail_conn1: |
Willy Tarreau | 22ec1ea | 2014-11-27 20:45:39 +0100 | [diff] [blame] | 2226 | pool_free2(pool2_buffer, socket->s->res.buf); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 2227 | out_fail_rep_buf: |
Willy Tarreau | 22ec1ea | 2014-11-27 20:45:39 +0100 | [diff] [blame] | 2228 | pool_free2(pool2_buffer, socket->s->req.buf); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 2229 | out_fail_req_buf: |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 2230 | task_free(socket->s->task); |
| 2231 | out_free_session: |
| 2232 | pool_free2(pool2_session, socket->s); |
| 2233 | out_fail_conf: |
| 2234 | WILL_LJMP(lua_error(L)); |
| 2235 | return 0; |
| 2236 | } |
Thierry FOURNIER | 65f34c6 | 2015-02-16 20:11:43 +0100 | [diff] [blame] | 2237 | |
| 2238 | /* |
| 2239 | * |
| 2240 | * |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2241 | * Class Channel |
| 2242 | * |
| 2243 | * |
| 2244 | */ |
| 2245 | |
| 2246 | /* Returns the struct hlua_channel join to the class channel in the |
| 2247 | * stack entry "ud" or throws an argument error. |
| 2248 | */ |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2249 | __LJMP static struct channel *hlua_checkchannel(lua_State *L, int ud) |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2250 | { |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2251 | return (struct channel *)MAY_LJMP(hlua_checkudata(L, ud, class_channel_ref)); |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2252 | } |
| 2253 | |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2254 | /* Pushes the channel onto the top of the stack. If the stask does not have a |
| 2255 | * free slots, the function fails and returns 0; |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2256 | */ |
Willy Tarreau | 2a71af4 | 2015-03-10 13:51:50 +0100 | [diff] [blame] | 2257 | static int hlua_channel_new(lua_State *L, struct channel *channel) |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2258 | { |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2259 | /* Check stack size. */ |
Thierry FOURNIER | 2297bc2 | 2015-03-11 17:43:33 +0100 | [diff] [blame] | 2260 | if (!lua_checkstack(L, 3)) |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2261 | return 0; |
| 2262 | |
Thierry FOURNIER | 2297bc2 | 2015-03-11 17:43:33 +0100 | [diff] [blame] | 2263 | lua_newtable(L); |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2264 | lua_pushlightuserdata(L, channel); |
Thierry FOURNIER | 2297bc2 | 2015-03-11 17:43:33 +0100 | [diff] [blame] | 2265 | lua_rawseti(L, -2, 0); |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2266 | |
| 2267 | /* Pop a class sesison metatable and affect it to the userdata. */ |
| 2268 | lua_rawgeti(L, LUA_REGISTRYINDEX, class_channel_ref); |
| 2269 | lua_setmetatable(L, -2); |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2270 | return 1; |
| 2271 | } |
| 2272 | |
| 2273 | /* Duplicate all the data present in the input channel and put it |
| 2274 | * in a string LUA variables. Returns -1 and push a nil value in |
| 2275 | * the stack if the channel is closed and all the data are consumed, |
| 2276 | * returns 0 if no data are available, otherwise it returns the length |
| 2277 | * of the builded string. |
| 2278 | */ |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2279 | static inline int _hlua_channel_dup(struct channel *chn, lua_State *L) |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2280 | { |
| 2281 | char *blk1; |
| 2282 | char *blk2; |
| 2283 | int len1; |
| 2284 | int len2; |
| 2285 | int ret; |
| 2286 | luaL_Buffer b; |
| 2287 | |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2288 | ret = bi_getblk_nc(chn, &blk1, &len1, &blk2, &len2); |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2289 | if (unlikely(ret == 0)) |
| 2290 | return 0; |
| 2291 | |
| 2292 | if (unlikely(ret < 0)) { |
| 2293 | lua_pushnil(L); |
| 2294 | return -1; |
| 2295 | } |
| 2296 | |
| 2297 | luaL_buffinit(L, &b); |
| 2298 | luaL_addlstring(&b, blk1, len1); |
| 2299 | if (unlikely(ret == 2)) |
| 2300 | luaL_addlstring(&b, blk2, len2); |
| 2301 | luaL_pushresult(&b); |
| 2302 | |
| 2303 | if (unlikely(ret == 2)) |
| 2304 | return len1 + len2; |
| 2305 | return len1; |
| 2306 | } |
| 2307 | |
| 2308 | /* "_hlua_channel_dup" wrapper. If no data are available, it returns |
| 2309 | * a yield. This function keep the data in the buffer. |
| 2310 | */ |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 2311 | __LJMP static int hlua_channel_dup_yield(lua_State *L, int status, lua_KContext ctx) |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2312 | { |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2313 | struct channel *chn; |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 2314 | |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 2315 | chn = MAY_LJMP(hlua_checkchannel(L, 1)); |
| 2316 | |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2317 | if (_hlua_channel_dup(chn, L) == 0) |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 2318 | WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_dup_yield, TICK_ETERNITY, 0)); |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2319 | return 1; |
| 2320 | } |
| 2321 | |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 2322 | /* Check arguments for the function "hlua_channel_dup_yield". */ |
| 2323 | __LJMP static int hlua_channel_dup(lua_State *L) |
| 2324 | { |
| 2325 | MAY_LJMP(check_args(L, 1, "dup")); |
| 2326 | MAY_LJMP(hlua_checkchannel(L, 1)); |
| 2327 | return MAY_LJMP(hlua_channel_dup_yield(L, 0, 0)); |
| 2328 | } |
| 2329 | |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2330 | /* "_hlua_channel_dup" wrapper. If no data are available, it returns |
| 2331 | * a yield. This function consumes the data in the buffer. It returns |
| 2332 | * a string containing the data or a nil pointer if no data are available |
| 2333 | * and the channel is closed. |
| 2334 | */ |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 2335 | __LJMP static int hlua_channel_get_yield(lua_State *L, int status, lua_KContext ctx) |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2336 | { |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2337 | struct channel *chn; |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 2338 | int ret; |
| 2339 | |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 2340 | chn = MAY_LJMP(hlua_checkchannel(L, 1)); |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 2341 | |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 2342 | ret = _hlua_channel_dup(chn, L); |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2343 | if (unlikely(ret == 0)) |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 2344 | WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_get_yield, TICK_ETERNITY, 0)); |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 2345 | |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2346 | if (unlikely(ret == -1)) |
| 2347 | return 1; |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2348 | |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2349 | chn->buf->i -= ret; |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2350 | return 1; |
| 2351 | } |
| 2352 | |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 2353 | /* Check arguments for the fucntion "hlua_channel_get_yield". */ |
| 2354 | __LJMP static int hlua_channel_get(lua_State *L) |
| 2355 | { |
| 2356 | MAY_LJMP(check_args(L, 1, "get")); |
| 2357 | MAY_LJMP(hlua_checkchannel(L, 1)); |
| 2358 | return MAY_LJMP(hlua_channel_get_yield(L, 0, 0)); |
| 2359 | } |
| 2360 | |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2361 | /* This functions consumes and returns one line. If the channel is closed, |
| 2362 | * and the last data does not contains a final '\n', the data are returned |
| 2363 | * without the final '\n'. When no more data are avalaible, it returns nil |
| 2364 | * value. |
| 2365 | */ |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 2366 | __LJMP static int hlua_channel_getline_yield(lua_State *L, int status, lua_KContext ctx) |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2367 | { |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2368 | char *blk1; |
| 2369 | char *blk2; |
| 2370 | int len1; |
| 2371 | int len2; |
| 2372 | int len; |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2373 | struct channel *chn; |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2374 | int ret; |
| 2375 | luaL_Buffer b; |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 2376 | |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 2377 | chn = MAY_LJMP(hlua_checkchannel(L, 1)); |
| 2378 | |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2379 | ret = bi_getline_nc(chn, &blk1, &len1, &blk2, &len2); |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2380 | if (ret == 0) |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 2381 | WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_getline_yield, TICK_ETERNITY, 0)); |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 2382 | |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2383 | if (ret == -1) { |
| 2384 | lua_pushnil(L); |
| 2385 | return 1; |
| 2386 | } |
| 2387 | |
| 2388 | luaL_buffinit(L, &b); |
| 2389 | luaL_addlstring(&b, blk1, len1); |
| 2390 | len = len1; |
| 2391 | if (unlikely(ret == 2)) { |
| 2392 | luaL_addlstring(&b, blk2, len2); |
| 2393 | len += len2; |
| 2394 | } |
| 2395 | luaL_pushresult(&b); |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2396 | buffer_replace2(chn->buf, chn->buf->p, chn->buf->p + len, NULL, 0); |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2397 | return 1; |
| 2398 | } |
| 2399 | |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 2400 | /* Check arguments for the fucntion "hlua_channel_getline_yield". */ |
| 2401 | __LJMP static int hlua_channel_getline(lua_State *L) |
| 2402 | { |
| 2403 | MAY_LJMP(check_args(L, 1, "getline")); |
| 2404 | MAY_LJMP(hlua_checkchannel(L, 1)); |
| 2405 | return MAY_LJMP(hlua_channel_getline_yield(L, 0, 0)); |
| 2406 | } |
| 2407 | |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2408 | /* This function takes a string as input, and append it at the |
| 2409 | * input side of channel. If the data is too big, but a space |
| 2410 | * is probably available after sending some data, the function |
| 2411 | * yield. If the data is bigger than the buffer, or if the |
| 2412 | * channel is closed, it returns -1. otherwise, it returns the |
| 2413 | * amount of data writed. |
| 2414 | */ |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 2415 | __LJMP static int hlua_channel_append_yield(lua_State *L, int status, lua_KContext ctx) |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2416 | { |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2417 | struct channel *chn = MAY_LJMP(hlua_checkchannel(L, 1)); |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2418 | size_t len; |
| 2419 | const char *str = MAY_LJMP(luaL_checklstring(L, 2, &len)); |
| 2420 | int l = MAY_LJMP(luaL_checkinteger(L, 3)); |
| 2421 | int ret; |
| 2422 | int max; |
| 2423 | |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2424 | max = channel_recv_limit(chn) - buffer_len(chn->buf); |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2425 | if (max > len - l) |
| 2426 | max = len - l; |
| 2427 | |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2428 | ret = bi_putblk(chn, str + l, max); |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2429 | if (ret == -2 || ret == -3) { |
| 2430 | lua_pushinteger(L, -1); |
| 2431 | return 1; |
| 2432 | } |
Willy Tarreau | bc18da1 | 2015-03-13 14:00:47 +0100 | [diff] [blame] | 2433 | if (ret == -1) { |
| 2434 | chn->flags |= CF_WAKE_WRITE; |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 2435 | WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_append_yield, TICK_ETERNITY, 0)); |
Willy Tarreau | bc18da1 | 2015-03-13 14:00:47 +0100 | [diff] [blame] | 2436 | } |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2437 | l += ret; |
| 2438 | lua_pop(L, 1); |
| 2439 | lua_pushinteger(L, l); |
| 2440 | |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2441 | max = channel_recv_limit(chn) - buffer_len(chn->buf); |
| 2442 | if (max == 0 && chn->buf->o == 0) { |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2443 | /* There are no space avalaible, and the output buffer is empty. |
| 2444 | * in this case, we cannot add more data, so we cannot yield, |
| 2445 | * we return the amount of copyied data. |
| 2446 | */ |
| 2447 | return 1; |
| 2448 | } |
| 2449 | if (l < len) |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 2450 | WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_append_yield, TICK_ETERNITY, 0)); |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2451 | return 1; |
| 2452 | } |
| 2453 | |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 2454 | /* just a wrapper of "hlua_channel_append_yield". It returns the length |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2455 | * of the writed string, or -1 if the channel is closed or if the |
| 2456 | * buffer size is too little for the data. |
| 2457 | */ |
| 2458 | __LJMP static int hlua_channel_append(lua_State *L) |
| 2459 | { |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 2460 | size_t len; |
| 2461 | |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2462 | MAY_LJMP(check_args(L, 2, "append")); |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 2463 | MAY_LJMP(hlua_checkchannel(L, 1)); |
| 2464 | MAY_LJMP(luaL_checklstring(L, 2, &len)); |
| 2465 | MAY_LJMP(luaL_checkinteger(L, 3)); |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2466 | lua_pushinteger(L, 0); |
| 2467 | |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 2468 | return MAY_LJMP(hlua_channel_append_yield(L, 0, 0)); |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2469 | } |
| 2470 | |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 2471 | /* just a wrapper of "hlua_channel_append_yield". This wrapper starts |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2472 | * his process by cleaning the buffer. The result is a replacement |
| 2473 | * of the current data. It returns the length of the writed string, |
| 2474 | * or -1 if the channel is closed or if the buffer size is too |
| 2475 | * little for the data. |
| 2476 | */ |
| 2477 | __LJMP static int hlua_channel_set(lua_State *L) |
| 2478 | { |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2479 | struct channel *chn; |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 2480 | |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2481 | MAY_LJMP(check_args(L, 2, "set")); |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 2482 | chn = MAY_LJMP(hlua_checkchannel(L, 1)); |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2483 | lua_pushinteger(L, 0); |
| 2484 | |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2485 | chn->buf->i = 0; |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2486 | |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 2487 | return MAY_LJMP(hlua_channel_append_yield(L, 0, 0)); |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2488 | } |
| 2489 | |
| 2490 | /* Append data in the output side of the buffer. This data is immediatly |
| 2491 | * sent. The fcuntion returns the ammount of data writed. If the buffer |
| 2492 | * cannot contains the data, the function yield. The function returns -1 |
| 2493 | * if the channel is closed. |
| 2494 | */ |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 2495 | __LJMP static int hlua_channel_send_yield(lua_State *L, int status, lua_KContext ctx) |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2496 | { |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2497 | struct channel *chn = MAY_LJMP(hlua_checkchannel(L, 1)); |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2498 | size_t len; |
| 2499 | const char *str = MAY_LJMP(luaL_checklstring(L, 2, &len)); |
| 2500 | int l = MAY_LJMP(luaL_checkinteger(L, 3)); |
| 2501 | int max; |
Thierry FOURNIER | ef6a211 | 2015-03-05 17:45:34 +0100 | [diff] [blame] | 2502 | struct hlua *hlua = hlua_gethlua(L); |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2503 | |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2504 | if (unlikely(channel_output_closed(chn))) { |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2505 | lua_pushinteger(L, -1); |
| 2506 | return 1; |
| 2507 | } |
| 2508 | |
Thierry FOURNIER | 3e3a608 | 2015-03-05 17:06:12 +0100 | [diff] [blame] | 2509 | /* Check if the buffer is avalaible because HAProxy doesn't allocate |
| 2510 | * the request buffer if its not required. |
| 2511 | */ |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2512 | if (chn->buf->size == 0) { |
| 2513 | if (!session_alloc_recv_buffer(chn)) { |
| 2514 | chn_prod(chn)->flags |= SI_FL_WAIT_ROOM; |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 2515 | WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_send_yield, TICK_ETERNITY, 0)); |
Thierry FOURNIER | 3e3a608 | 2015-03-05 17:06:12 +0100 | [diff] [blame] | 2516 | } |
| 2517 | } |
| 2518 | |
Thierry FOURNIER | deb5d73 | 2015-03-06 01:07:45 +0100 | [diff] [blame] | 2519 | /* the writed data will be immediatly sent, so we can check |
| 2520 | * the avalaible space without taking in account the reserve. |
| 2521 | * The reserve is guaranted for the processing of incoming |
| 2522 | * data, because the buffer will be flushed. |
| 2523 | */ |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2524 | max = chn->buf->size - buffer_len(chn->buf); |
Thierry FOURNIER | deb5d73 | 2015-03-06 01:07:45 +0100 | [diff] [blame] | 2525 | |
| 2526 | /* If there are no space avalaible, and the output buffer is empty. |
| 2527 | * in this case, we cannot add more data, so we cannot yield, |
| 2528 | * we return the amount of copyied data. |
| 2529 | */ |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2530 | if (max == 0 && chn->buf->o == 0) |
Thierry FOURNIER | deb5d73 | 2015-03-06 01:07:45 +0100 | [diff] [blame] | 2531 | return 1; |
| 2532 | |
| 2533 | /* Adjust the real required length. */ |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2534 | if (max > len - l) |
| 2535 | max = len - l; |
| 2536 | |
Thierry FOURNIER | deb5d73 | 2015-03-06 01:07:45 +0100 | [diff] [blame] | 2537 | /* The buffer avalaible size may be not contiguous. This test |
| 2538 | * detects a non contiguous buffer and realign it. |
| 2539 | */ |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2540 | if (bi_space_for_replace(chn->buf) < max) |
| 2541 | buffer_slow_realign(chn->buf); |
Thierry FOURNIER | deb5d73 | 2015-03-06 01:07:45 +0100 | [diff] [blame] | 2542 | |
| 2543 | /* Copy input data in the buffer. */ |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2544 | max = buffer_replace2(chn->buf, chn->buf->p, chn->buf->p, str + l, max); |
Thierry FOURNIER | deb5d73 | 2015-03-06 01:07:45 +0100 | [diff] [blame] | 2545 | |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2546 | /* buffer replace considers that the input part is filled. |
| 2547 | * so, I must forward these new data in the output part. |
| 2548 | */ |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2549 | b_adv(chn->buf, max); |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2550 | |
| 2551 | l += max; |
| 2552 | lua_pop(L, 1); |
| 2553 | lua_pushinteger(L, l); |
| 2554 | |
Thierry FOURNIER | deb5d73 | 2015-03-06 01:07:45 +0100 | [diff] [blame] | 2555 | /* If there are no space avalaible, and the output buffer is empty. |
| 2556 | * in this case, we cannot add more data, so we cannot yield, |
| 2557 | * we return the amount of copyied data. |
| 2558 | */ |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2559 | max = chn->buf->size - buffer_len(chn->buf); |
| 2560 | if (max == 0 && chn->buf->o == 0) |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2561 | return 1; |
Thierry FOURNIER | deb5d73 | 2015-03-06 01:07:45 +0100 | [diff] [blame] | 2562 | |
Thierry FOURNIER | ef6a211 | 2015-03-05 17:45:34 +0100 | [diff] [blame] | 2563 | if (l < len) { |
| 2564 | /* If we are waiting for space in the response buffer, we |
| 2565 | * must set the flag WAKERESWR. This flag required the task |
| 2566 | * wake up if any activity is detected on the response buffer. |
| 2567 | */ |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2568 | if (chn->flags & CF_ISRESP) |
Thierry FOURNIER | ef6a211 | 2015-03-05 17:45:34 +0100 | [diff] [blame] | 2569 | HLUA_SET_WAKERESWR(hlua); |
Thierry FOURNIER | 53e08ec | 2015-03-06 00:35:53 +0100 | [diff] [blame] | 2570 | else |
| 2571 | HLUA_SET_WAKEREQWR(hlua); |
| 2572 | WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_send_yield, TICK_ETERNITY, 0)); |
Thierry FOURNIER | ef6a211 | 2015-03-05 17:45:34 +0100 | [diff] [blame] | 2573 | } |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2574 | |
| 2575 | return 1; |
| 2576 | } |
| 2577 | |
| 2578 | /* Just a wraper of "_hlua_channel_send". This wrapper permits |
| 2579 | * yield the LUA process, and resume it without checking the |
| 2580 | * input arguments. |
| 2581 | */ |
| 2582 | __LJMP static int hlua_channel_send(lua_State *L) |
| 2583 | { |
| 2584 | MAY_LJMP(check_args(L, 2, "send")); |
| 2585 | lua_pushinteger(L, 0); |
| 2586 | |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 2587 | return MAY_LJMP(hlua_channel_send_yield(L, 0, 0)); |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2588 | } |
| 2589 | |
| 2590 | /* This function forward and amount of butes. The data pass from |
| 2591 | * the input side of the buffer to the output side, and can be |
| 2592 | * forwarded. This function never fails. |
| 2593 | * |
| 2594 | * The Lua function takes an amount of bytes to be forwarded in |
| 2595 | * imput. It returns the number of bytes forwarded. |
| 2596 | */ |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 2597 | __LJMP static int hlua_channel_forward_yield(lua_State *L, int status, lua_KContext ctx) |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2598 | { |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2599 | struct channel *chn; |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2600 | int len; |
| 2601 | int l; |
| 2602 | int max; |
Thierry FOURNIER | ef6a211 | 2015-03-05 17:45:34 +0100 | [diff] [blame] | 2603 | struct hlua *hlua = hlua_gethlua(L); |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2604 | |
| 2605 | chn = MAY_LJMP(hlua_checkchannel(L, 1)); |
| 2606 | len = MAY_LJMP(luaL_checkinteger(L, 2)); |
| 2607 | l = MAY_LJMP(luaL_checkinteger(L, -1)); |
| 2608 | |
| 2609 | max = len - l; |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2610 | if (max > chn->buf->i) |
| 2611 | max = chn->buf->i; |
| 2612 | channel_forward(chn, max); |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2613 | l += max; |
| 2614 | |
| 2615 | lua_pop(L, 1); |
| 2616 | lua_pushinteger(L, l); |
| 2617 | |
| 2618 | /* Check if it miss bytes to forward. */ |
| 2619 | if (l < len) { |
| 2620 | /* The the input channel or the output channel are closed, we |
| 2621 | * must return the amount of data forwarded. |
| 2622 | */ |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2623 | if (channel_input_closed(chn) || channel_output_closed(chn)) |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2624 | return 1; |
| 2625 | |
Thierry FOURNIER | ef6a211 | 2015-03-05 17:45:34 +0100 | [diff] [blame] | 2626 | /* If we are waiting for space data in the response buffer, we |
| 2627 | * must set the flag WAKERESWR. This flag required the task |
| 2628 | * wake up if any activity is detected on the response buffer. |
| 2629 | */ |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2630 | if (chn->flags & CF_ISRESP) |
Thierry FOURNIER | ef6a211 | 2015-03-05 17:45:34 +0100 | [diff] [blame] | 2631 | HLUA_SET_WAKERESWR(hlua); |
Thierry FOURNIER | 53e08ec | 2015-03-06 00:35:53 +0100 | [diff] [blame] | 2632 | else |
| 2633 | HLUA_SET_WAKEREQWR(hlua); |
Thierry FOURNIER | ef6a211 | 2015-03-05 17:45:34 +0100 | [diff] [blame] | 2634 | |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2635 | /* Otherwise, we can yield waiting for new data in the inpout side. */ |
Thierry FOURNIER | 4abd3ae | 2015-03-03 17:29:06 +0100 | [diff] [blame] | 2636 | WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_channel_forward_yield, TICK_ETERNITY, 0)); |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2637 | } |
| 2638 | |
| 2639 | return 1; |
| 2640 | } |
| 2641 | |
| 2642 | /* Just check the input and prepare the stack for the previous |
| 2643 | * function "hlua_channel_forward_yield" |
| 2644 | */ |
| 2645 | __LJMP static int hlua_channel_forward(lua_State *L) |
| 2646 | { |
| 2647 | MAY_LJMP(check_args(L, 2, "forward")); |
| 2648 | MAY_LJMP(hlua_checkchannel(L, 1)); |
| 2649 | MAY_LJMP(luaL_checkinteger(L, 2)); |
| 2650 | |
| 2651 | lua_pushinteger(L, 0); |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 2652 | return MAY_LJMP(hlua_channel_forward_yield(L, 0, 0)); |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2653 | } |
| 2654 | |
| 2655 | /* Just returns the number of bytes available in the input |
| 2656 | * side of the buffer. This function never fails. |
| 2657 | */ |
| 2658 | __LJMP static int hlua_channel_get_in_len(lua_State *L) |
| 2659 | { |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2660 | struct channel *chn; |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 2661 | |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2662 | MAY_LJMP(check_args(L, 1, "get_in_len")); |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 2663 | chn = MAY_LJMP(hlua_checkchannel(L, 1)); |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2664 | lua_pushinteger(L, chn->buf->i); |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2665 | return 1; |
| 2666 | } |
| 2667 | |
| 2668 | /* Just returns the number of bytes available in the output |
| 2669 | * side of the buffer. This function never fails. |
| 2670 | */ |
| 2671 | __LJMP static int hlua_channel_get_out_len(lua_State *L) |
| 2672 | { |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2673 | struct channel *chn; |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 2674 | |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2675 | MAY_LJMP(check_args(L, 1, "get_out_len")); |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 2676 | chn = MAY_LJMP(hlua_checkchannel(L, 1)); |
Willy Tarreau | 47860ed | 2015-03-10 14:07:50 +0100 | [diff] [blame] | 2677 | lua_pushinteger(L, chn->buf->o); |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2678 | return 1; |
| 2679 | } |
| 2680 | |
Thierry FOURNIER | bb53c7b | 2015-03-11 18:28:02 +0100 | [diff] [blame] | 2681 | /* |
| 2682 | * |
| 2683 | * |
| 2684 | * Class Fetches |
| 2685 | * |
| 2686 | * |
| 2687 | */ |
| 2688 | |
| 2689 | /* Returns a struct hlua_session if the stack entry "ud" is |
| 2690 | * a class session, otherwise it throws an error. |
| 2691 | */ |
Thierry FOURNIER | 2694a1a | 2015-03-11 20:13:36 +0100 | [diff] [blame] | 2692 | __LJMP static struct hlua_smp *hlua_checkfetches(lua_State *L, int ud) |
Thierry FOURNIER | bb53c7b | 2015-03-11 18:28:02 +0100 | [diff] [blame] | 2693 | { |
Thierry FOURNIER | 2694a1a | 2015-03-11 20:13:36 +0100 | [diff] [blame] | 2694 | return (struct hlua_smp *)MAY_LJMP(hlua_checkudata(L, ud, class_fetches_ref)); |
Thierry FOURNIER | bb53c7b | 2015-03-11 18:28:02 +0100 | [diff] [blame] | 2695 | } |
| 2696 | |
| 2697 | /* This function creates and push in the stack a fetch object according |
| 2698 | * with a current TXN. |
| 2699 | */ |
Thierry FOURNIER | 2694a1a | 2015-03-11 20:13:36 +0100 | [diff] [blame] | 2700 | static int hlua_fetches_new(lua_State *L, struct hlua_txn *txn, int stringsafe) |
Thierry FOURNIER | bb53c7b | 2015-03-11 18:28:02 +0100 | [diff] [blame] | 2701 | { |
Thierry FOURNIER | 2694a1a | 2015-03-11 20:13:36 +0100 | [diff] [blame] | 2702 | struct hlua_smp *hs; |
Thierry FOURNIER | bb53c7b | 2015-03-11 18:28:02 +0100 | [diff] [blame] | 2703 | |
| 2704 | /* Check stack size. */ |
| 2705 | if (!lua_checkstack(L, 3)) |
| 2706 | return 0; |
| 2707 | |
| 2708 | /* Create the object: obj[0] = userdata. |
| 2709 | * Note that the base of the Fetches object is the |
| 2710 | * transaction object. |
| 2711 | */ |
| 2712 | lua_newtable(L); |
Thierry FOURNIER | 2694a1a | 2015-03-11 20:13:36 +0100 | [diff] [blame] | 2713 | hs = lua_newuserdata(L, sizeof(struct hlua_smp)); |
Thierry FOURNIER | bb53c7b | 2015-03-11 18:28:02 +0100 | [diff] [blame] | 2714 | lua_rawseti(L, -2, 0); |
| 2715 | |
| 2716 | hs->s = txn->s; |
| 2717 | hs->p = txn->p; |
| 2718 | hs->l7 = txn->l7; |
Thierry FOURNIER | 2694a1a | 2015-03-11 20:13:36 +0100 | [diff] [blame] | 2719 | hs->stringsafe = stringsafe; |
Thierry FOURNIER | bb53c7b | 2015-03-11 18:28:02 +0100 | [diff] [blame] | 2720 | |
| 2721 | /* Pop a class sesison metatable and affect it to the userdata. */ |
| 2722 | lua_rawgeti(L, LUA_REGISTRYINDEX, class_fetches_ref); |
| 2723 | lua_setmetatable(L, -2); |
| 2724 | |
| 2725 | return 1; |
| 2726 | } |
| 2727 | |
| 2728 | /* This function is an LUA binding. It is called with each sample-fetch. |
| 2729 | * It uses closure argument to store the associated sample-fetch. It |
| 2730 | * returns only one argument or throws an error. An error is thrown |
| 2731 | * only if an error is encountered during the argument parsing. If |
| 2732 | * the "sample-fetch" function fails, nil is returned. |
| 2733 | */ |
| 2734 | __LJMP static int hlua_run_sample_fetch(lua_State *L) |
| 2735 | { |
Thierry FOURNIER | 2694a1a | 2015-03-11 20:13:36 +0100 | [diff] [blame] | 2736 | struct hlua_smp *s; |
Willy Tarreau | 2ec2274 | 2015-03-10 14:27:20 +0100 | [diff] [blame] | 2737 | struct sample_fetch *f; |
Thierry FOURNIER | bb53c7b | 2015-03-11 18:28:02 +0100 | [diff] [blame] | 2738 | struct arg args[ARGM_NBARGS + 1]; |
| 2739 | int i; |
| 2740 | struct sample smp; |
| 2741 | |
| 2742 | /* Get closure arguments. */ |
Willy Tarreau | 2ec2274 | 2015-03-10 14:27:20 +0100 | [diff] [blame] | 2743 | f = (struct sample_fetch *)lua_touserdata(L, lua_upvalueindex(1)); |
Thierry FOURNIER | bb53c7b | 2015-03-11 18:28:02 +0100 | [diff] [blame] | 2744 | |
| 2745 | /* Get traditionnal arguments. */ |
| 2746 | s = MAY_LJMP(hlua_checkfetches(L, 1)); |
| 2747 | |
| 2748 | /* Get extra arguments. */ |
| 2749 | for (i = 0; i < lua_gettop(L) - 1; i++) { |
| 2750 | if (i >= ARGM_NBARGS) |
| 2751 | break; |
| 2752 | hlua_lua2arg(L, i + 2, &args[i]); |
| 2753 | } |
| 2754 | args[i].type = ARGT_STOP; |
| 2755 | |
| 2756 | /* Check arguments. */ |
Thierry FOURNIER | 53dd3cf | 2015-03-12 18:27:10 +0100 | [diff] [blame] | 2757 | MAY_LJMP(hlua_lua2arg_check(L, 2, args, f->arg_mask, s->p)); |
Thierry FOURNIER | bb53c7b | 2015-03-11 18:28:02 +0100 | [diff] [blame] | 2758 | |
| 2759 | /* Run the special args checker. */ |
Willy Tarreau | 2ec2274 | 2015-03-10 14:27:20 +0100 | [diff] [blame] | 2760 | if (f->val_args && !f->val_args(args, NULL)) { |
Thierry FOURNIER | bb53c7b | 2015-03-11 18:28:02 +0100 | [diff] [blame] | 2761 | lua_pushfstring(L, "error in arguments"); |
| 2762 | WILL_LJMP(lua_error(L)); |
| 2763 | } |
| 2764 | |
| 2765 | /* Initialise the sample. */ |
| 2766 | memset(&smp, 0, sizeof(smp)); |
| 2767 | |
| 2768 | /* Run the sample fetch process. */ |
Willy Tarreau | 2ec2274 | 2015-03-10 14:27:20 +0100 | [diff] [blame] | 2769 | if (!f->process(s->p, s->s, s->l7, 0, args, &smp, f->kw, f->private)) { |
Thierry FOURNIER | 2694a1a | 2015-03-11 20:13:36 +0100 | [diff] [blame] | 2770 | if (s->stringsafe) |
| 2771 | lua_pushstring(L, ""); |
| 2772 | else |
| 2773 | lua_pushnil(L); |
Thierry FOURNIER | bb53c7b | 2015-03-11 18:28:02 +0100 | [diff] [blame] | 2774 | return 1; |
| 2775 | } |
| 2776 | |
| 2777 | /* Convert the returned sample in lua value. */ |
Thierry FOURNIER | 2694a1a | 2015-03-11 20:13:36 +0100 | [diff] [blame] | 2778 | if (s->stringsafe) |
| 2779 | hlua_smp2lua_str(L, &smp); |
| 2780 | else |
| 2781 | hlua_smp2lua(L, &smp); |
Thierry FOURNIER | bb53c7b | 2015-03-11 18:28:02 +0100 | [diff] [blame] | 2782 | return 1; |
| 2783 | } |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 2784 | |
| 2785 | /* |
| 2786 | * |
| 2787 | * |
Thierry FOURNIER | 594afe7 | 2015-03-10 23:58:30 +0100 | [diff] [blame] | 2788 | * Class Converters |
| 2789 | * |
| 2790 | * |
| 2791 | */ |
| 2792 | |
| 2793 | /* Returns a struct hlua_session if the stack entry "ud" is |
| 2794 | * a class session, otherwise it throws an error. |
| 2795 | */ |
Thierry FOURNIER | 2694a1a | 2015-03-11 20:13:36 +0100 | [diff] [blame] | 2796 | __LJMP static struct hlua_smp *hlua_checkconverters(lua_State *L, int ud) |
Thierry FOURNIER | 594afe7 | 2015-03-10 23:58:30 +0100 | [diff] [blame] | 2797 | { |
Thierry FOURNIER | 2694a1a | 2015-03-11 20:13:36 +0100 | [diff] [blame] | 2798 | return (struct hlua_smp *)MAY_LJMP(hlua_checkudata(L, ud, class_converters_ref)); |
Thierry FOURNIER | 594afe7 | 2015-03-10 23:58:30 +0100 | [diff] [blame] | 2799 | } |
| 2800 | |
| 2801 | /* This function creates and push in the stack a Converters object |
| 2802 | * according with a current TXN. |
| 2803 | */ |
Thierry FOURNIER | 2694a1a | 2015-03-11 20:13:36 +0100 | [diff] [blame] | 2804 | static int hlua_converters_new(lua_State *L, struct hlua_txn *txn, int stringsafe) |
Thierry FOURNIER | 594afe7 | 2015-03-10 23:58:30 +0100 | [diff] [blame] | 2805 | { |
Thierry FOURNIER | 2694a1a | 2015-03-11 20:13:36 +0100 | [diff] [blame] | 2806 | struct hlua_smp *hs; |
Thierry FOURNIER | 594afe7 | 2015-03-10 23:58:30 +0100 | [diff] [blame] | 2807 | |
| 2808 | /* Check stack size. */ |
| 2809 | if (!lua_checkstack(L, 3)) |
| 2810 | return 0; |
| 2811 | |
| 2812 | /* Create the object: obj[0] = userdata. |
| 2813 | * Note that the base of the Converters object is the |
| 2814 | * same than the TXN object. |
| 2815 | */ |
| 2816 | lua_newtable(L); |
| 2817 | hs = lua_newuserdata(L, sizeof(struct hlua_txn)); |
| 2818 | lua_rawseti(L, -2, 0); |
| 2819 | |
| 2820 | hs->s = txn->s; |
| 2821 | hs->p = txn->p; |
| 2822 | hs->l7 = txn->l7; |
Thierry FOURNIER | 2694a1a | 2015-03-11 20:13:36 +0100 | [diff] [blame] | 2823 | hs->stringsafe = stringsafe; |
Thierry FOURNIER | 594afe7 | 2015-03-10 23:58:30 +0100 | [diff] [blame] | 2824 | |
| 2825 | /* Pop a class session metatable and affect it to the table. */ |
| 2826 | lua_rawgeti(L, LUA_REGISTRYINDEX, class_converters_ref); |
| 2827 | lua_setmetatable(L, -2); |
| 2828 | |
| 2829 | return 1; |
| 2830 | } |
| 2831 | |
| 2832 | /* This function is an LUA binding. It is called with each converter. |
| 2833 | * It uses closure argument to store the associated converter. It |
| 2834 | * returns only one argument or throws an error. An error is thrown |
| 2835 | * only if an error is encountered during the argument parsing. If |
| 2836 | * the converter function function fails, nil is returned. |
| 2837 | */ |
| 2838 | __LJMP static int hlua_run_sample_conv(lua_State *L) |
| 2839 | { |
Thierry FOURNIER | 2694a1a | 2015-03-11 20:13:36 +0100 | [diff] [blame] | 2840 | struct hlua_smp *sc; |
Thierry FOURNIER | 594afe7 | 2015-03-10 23:58:30 +0100 | [diff] [blame] | 2841 | struct sample_conv *conv; |
| 2842 | struct arg args[ARGM_NBARGS + 1]; |
| 2843 | int i; |
| 2844 | struct sample smp; |
| 2845 | |
| 2846 | /* Get closure arguments. */ |
| 2847 | conv = (struct sample_conv *)lua_touserdata(L, lua_upvalueindex(1)); |
| 2848 | |
| 2849 | /* Get traditionnal arguments. */ |
Thierry FOURNIER | 2694a1a | 2015-03-11 20:13:36 +0100 | [diff] [blame] | 2850 | sc = MAY_LJMP(hlua_checkconverters(L, 1)); |
Thierry FOURNIER | 594afe7 | 2015-03-10 23:58:30 +0100 | [diff] [blame] | 2851 | |
| 2852 | /* Get extra arguments. */ |
| 2853 | for (i = 0; i < lua_gettop(L) - 2; i++) { |
| 2854 | if (i >= ARGM_NBARGS) |
| 2855 | break; |
| 2856 | hlua_lua2arg(L, i + 3, &args[i]); |
| 2857 | } |
| 2858 | args[i].type = ARGT_STOP; |
| 2859 | |
| 2860 | /* Check arguments. */ |
Thierry FOURNIER | 53dd3cf | 2015-03-12 18:27:10 +0100 | [diff] [blame] | 2861 | MAY_LJMP(hlua_lua2arg_check(L, 3, args, conv->arg_mask, sc->p)); |
Thierry FOURNIER | 594afe7 | 2015-03-10 23:58:30 +0100 | [diff] [blame] | 2862 | |
| 2863 | /* Run the special args checker. */ |
| 2864 | if (conv->val_args && !conv->val_args(args, conv, "", 0, NULL)) { |
| 2865 | hlua_pusherror(L, "error in arguments"); |
| 2866 | WILL_LJMP(lua_error(L)); |
| 2867 | } |
| 2868 | |
| 2869 | /* Initialise the sample. */ |
| 2870 | if (!hlua_lua2smp(L, 2, &smp)) { |
| 2871 | hlua_pusherror(L, "error in the input argument"); |
| 2872 | WILL_LJMP(lua_error(L)); |
| 2873 | } |
| 2874 | |
| 2875 | /* Apply expected cast. */ |
| 2876 | if (!sample_casts[smp.type][conv->in_type]) { |
| 2877 | hlua_pusherror(L, "invalid input argument: cannot cast '%s' to '%s'", |
| 2878 | smp_to_type[smp.type], smp_to_type[conv->in_type]); |
| 2879 | WILL_LJMP(lua_error(L)); |
| 2880 | } |
| 2881 | if (sample_casts[smp.type][conv->in_type] != c_none && |
| 2882 | !sample_casts[smp.type][conv->in_type](&smp)) { |
| 2883 | hlua_pusherror(L, "error during the input argument casting"); |
| 2884 | WILL_LJMP(lua_error(L)); |
| 2885 | } |
| 2886 | |
| 2887 | /* Run the sample conversion process. */ |
Thierry FOURNIER | 2694a1a | 2015-03-11 20:13:36 +0100 | [diff] [blame] | 2888 | if (!conv->process(sc->s, args, &smp, conv->private)) { |
| 2889 | if (sc->stringsafe) |
| 2890 | lua_pushstring(L, ""); |
| 2891 | else |
| 2892 | lua_pushnil(L); |
Thierry FOURNIER | 594afe7 | 2015-03-10 23:58:30 +0100 | [diff] [blame] | 2893 | return 1; |
| 2894 | } |
| 2895 | |
| 2896 | /* Convert the returned sample in lua value. */ |
Thierry FOURNIER | 2694a1a | 2015-03-11 20:13:36 +0100 | [diff] [blame] | 2897 | if (sc->stringsafe) |
| 2898 | hlua_smp2lua_str(L, &smp); |
| 2899 | else |
| 2900 | hlua_smp2lua(L, &smp); |
| 2901 | return 1; |
Thierry FOURNIER | 594afe7 | 2015-03-10 23:58:30 +0100 | [diff] [blame] | 2902 | } |
| 2903 | |
| 2904 | /* |
| 2905 | * |
| 2906 | * |
Thierry FOURNIER | 08504f4 | 2015-03-16 14:17:08 +0100 | [diff] [blame] | 2907 | * Class HTTP |
| 2908 | * |
| 2909 | * |
| 2910 | */ |
| 2911 | |
| 2912 | /* Returns a struct hlua_txn if the stack entry "ud" is |
| 2913 | * a class session, otherwise it throws an error. |
| 2914 | */ |
| 2915 | __LJMP static struct hlua_txn *hlua_checkhttp(lua_State *L, int ud) |
| 2916 | { |
| 2917 | return (struct hlua_txn *)MAY_LJMP(hlua_checkudata(L, ud, class_http_ref)); |
| 2918 | } |
| 2919 | |
| 2920 | /* This function creates and push in the stack a HTTP object |
| 2921 | * according with a current TXN. |
| 2922 | */ |
| 2923 | static int hlua_http_new(lua_State *L, struct hlua_txn *txn) |
| 2924 | { |
| 2925 | struct hlua_txn *ht; |
| 2926 | |
| 2927 | /* Check stack size. */ |
| 2928 | if (!lua_checkstack(L, 3)) |
| 2929 | return 0; |
| 2930 | |
| 2931 | /* Create the object: obj[0] = userdata. |
| 2932 | * Note that the base of the Converters object is the |
| 2933 | * same than the TXN object. |
| 2934 | */ |
| 2935 | lua_newtable(L); |
| 2936 | ht = lua_newuserdata(L, sizeof(struct hlua_txn)); |
| 2937 | lua_rawseti(L, -2, 0); |
| 2938 | |
| 2939 | ht->s = txn->s; |
| 2940 | ht->p = txn->p; |
| 2941 | ht->l7 = txn->l7; |
| 2942 | |
| 2943 | /* Pop a class session metatable and affect it to the table. */ |
| 2944 | lua_rawgeti(L, LUA_REGISTRYINDEX, class_http_ref); |
| 2945 | lua_setmetatable(L, -2); |
| 2946 | |
| 2947 | return 1; |
| 2948 | } |
| 2949 | |
| 2950 | /* This function creates ans returns an array of HTTP headers. |
| 2951 | * This function does not fails. It is used as wrapper with the |
| 2952 | * 2 following functions. |
| 2953 | */ |
| 2954 | __LJMP static int hlua_http_get_headers(lua_State *L, struct hlua_txn *htxn, struct http_msg *msg) |
| 2955 | { |
| 2956 | const char *cur_ptr, *cur_next, *p; |
| 2957 | int old_idx, cur_idx; |
| 2958 | struct hdr_idx_elem *cur_hdr; |
| 2959 | const char *hn, *hv; |
| 2960 | int hnl, hvl; |
| 2961 | |
| 2962 | /* Create the table. */ |
| 2963 | lua_newtable(L); |
| 2964 | |
| 2965 | /* Build array of headers. */ |
| 2966 | old_idx = 0; |
| 2967 | cur_next = msg->chn->buf->p + hdr_idx_first_pos(&htxn->s->txn.hdr_idx); |
| 2968 | |
| 2969 | while (1) { |
| 2970 | cur_idx = htxn->s->txn.hdr_idx.v[old_idx].next; |
| 2971 | if (!cur_idx) |
| 2972 | break; |
| 2973 | old_idx = cur_idx; |
| 2974 | |
| 2975 | cur_hdr = &htxn->s->txn.hdr_idx.v[cur_idx]; |
| 2976 | cur_ptr = cur_next; |
| 2977 | cur_next = cur_ptr + cur_hdr->len + cur_hdr->cr + 1; |
| 2978 | |
| 2979 | /* Now we have one full header at cur_ptr of len cur_hdr->len, |
| 2980 | * and the next header starts at cur_next. We'll check |
| 2981 | * this header in the list as well as against the default |
| 2982 | * rule. |
| 2983 | */ |
| 2984 | |
| 2985 | /* look for ': *'. */ |
| 2986 | hn = cur_ptr; |
| 2987 | for (p = cur_ptr; p < cur_ptr + cur_hdr->len && *p != ':'; p++); |
| 2988 | if (p >= cur_ptr+cur_hdr->len) |
| 2989 | continue; |
| 2990 | hnl = p - hn; |
| 2991 | p++; |
| 2992 | while (p < cur_ptr+cur_hdr->len && ( *p == ' ' || *p == '\t' )) |
| 2993 | p++; |
| 2994 | if (p >= cur_ptr+cur_hdr->len) |
| 2995 | continue; |
| 2996 | hv = p; |
| 2997 | hvl = cur_ptr+cur_hdr->len-p; |
| 2998 | |
| 2999 | /* Push values in the table. */ |
| 3000 | lua_pushlstring(L, hn, hnl); |
| 3001 | lua_pushlstring(L, hv, hvl); |
| 3002 | lua_settable(L, -3); |
| 3003 | } |
| 3004 | |
| 3005 | return 1; |
| 3006 | } |
| 3007 | |
| 3008 | __LJMP static int hlua_http_req_get_headers(lua_State *L) |
| 3009 | { |
| 3010 | struct hlua_txn *htxn; |
| 3011 | |
| 3012 | MAY_LJMP(check_args(L, 1, "req_get_headers")); |
| 3013 | htxn = MAY_LJMP(hlua_checkhttp(L, 1)); |
| 3014 | |
| 3015 | return hlua_http_get_headers(L, htxn, &htxn->s->txn.req); |
| 3016 | } |
| 3017 | |
| 3018 | __LJMP static int hlua_http_res_get_headers(lua_State *L) |
| 3019 | { |
| 3020 | struct hlua_txn *htxn; |
| 3021 | |
| 3022 | MAY_LJMP(check_args(L, 1, "res_get_headers")); |
| 3023 | htxn = MAY_LJMP(hlua_checkhttp(L, 1)); |
| 3024 | |
| 3025 | return hlua_http_get_headers(L, htxn, &htxn->s->txn.rsp); |
| 3026 | } |
| 3027 | |
| 3028 | /* This function replace full header, or just a value in |
| 3029 | * the request or in the response. It is a wrapper fir the |
| 3030 | * 4 following functions. |
| 3031 | */ |
| 3032 | __LJMP static inline int hlua_http_rep_hdr(lua_State *L, struct hlua_txn *htxn, |
| 3033 | struct http_msg *msg, int action) |
| 3034 | { |
| 3035 | size_t name_len; |
| 3036 | const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len)); |
| 3037 | const char *reg = MAY_LJMP(luaL_checkstring(L, 3)); |
| 3038 | const char *value = MAY_LJMP(luaL_checkstring(L, 4)); |
| 3039 | struct my_regex re; |
| 3040 | |
| 3041 | if (!regex_comp(reg, &re, 1, 1, NULL)) |
| 3042 | WILL_LJMP(luaL_argerror(L, 3, "invalid regex")); |
| 3043 | |
| 3044 | http_transform_header_str(htxn->s, msg, name, name_len, value, &re, action); |
| 3045 | regex_free(&re); |
| 3046 | return 0; |
| 3047 | } |
| 3048 | |
| 3049 | __LJMP static int hlua_http_req_rep_hdr(lua_State *L) |
| 3050 | { |
| 3051 | struct hlua_txn *htxn; |
| 3052 | |
| 3053 | MAY_LJMP(check_args(L, 4, "req_rep_hdr")); |
| 3054 | htxn = MAY_LJMP(hlua_checkhttp(L, 1)); |
| 3055 | |
| 3056 | return MAY_LJMP(hlua_http_rep_hdr(L, htxn, &htxn->s->txn.req, HTTP_REQ_ACT_REPLACE_HDR)); |
| 3057 | } |
| 3058 | |
| 3059 | __LJMP static int hlua_http_res_rep_hdr(lua_State *L) |
| 3060 | { |
| 3061 | struct hlua_txn *htxn; |
| 3062 | |
| 3063 | MAY_LJMP(check_args(L, 4, "res_rep_hdr")); |
| 3064 | htxn = MAY_LJMP(hlua_checkhttp(L, 1)); |
| 3065 | |
| 3066 | return MAY_LJMP(hlua_http_rep_hdr(L, htxn, &htxn->s->txn.rsp, HTTP_RES_ACT_REPLACE_HDR)); |
| 3067 | } |
| 3068 | |
| 3069 | __LJMP static int hlua_http_req_rep_val(lua_State *L) |
| 3070 | { |
| 3071 | struct hlua_txn *htxn; |
| 3072 | |
| 3073 | MAY_LJMP(check_args(L, 4, "req_rep_hdr")); |
| 3074 | htxn = MAY_LJMP(hlua_checkhttp(L, 1)); |
| 3075 | |
| 3076 | return MAY_LJMP(hlua_http_rep_hdr(L, htxn, &htxn->s->txn.req, HTTP_REQ_ACT_REPLACE_VAL)); |
| 3077 | } |
| 3078 | |
| 3079 | __LJMP static int hlua_http_res_rep_val(lua_State *L) |
| 3080 | { |
| 3081 | struct hlua_txn *htxn; |
| 3082 | |
| 3083 | MAY_LJMP(check_args(L, 4, "res_rep_val")); |
| 3084 | htxn = MAY_LJMP(hlua_checkhttp(L, 1)); |
| 3085 | |
| 3086 | return MAY_LJMP(hlua_http_rep_hdr(L, htxn, &htxn->s->txn.rsp, HTTP_RES_ACT_REPLACE_VAL)); |
| 3087 | } |
| 3088 | |
| 3089 | /* This function deletes all the occurences of an header. |
| 3090 | * It is a wrapper for the 2 following functions. |
| 3091 | */ |
| 3092 | __LJMP static inline int hlua_http_del_hdr(lua_State *L, struct hlua_txn *htxn, struct http_msg *msg) |
| 3093 | { |
| 3094 | size_t len; |
| 3095 | const char *name = MAY_LJMP(luaL_checklstring(L, 2, &len)); |
| 3096 | struct hdr_ctx ctx; |
| 3097 | struct http_txn *txn = &htxn->s->txn; |
| 3098 | |
| 3099 | ctx.idx = 0; |
| 3100 | while (http_find_header2(name, len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) |
| 3101 | http_remove_header2(msg, &txn->hdr_idx, &ctx); |
| 3102 | return 0; |
| 3103 | } |
| 3104 | |
| 3105 | __LJMP static int hlua_http_req_del_hdr(lua_State *L) |
| 3106 | { |
| 3107 | struct hlua_txn *htxn; |
| 3108 | |
| 3109 | MAY_LJMP(check_args(L, 2, "req_del_hdr")); |
| 3110 | htxn = MAY_LJMP(hlua_checkhttp(L, 1)); |
| 3111 | |
| 3112 | return hlua_http_del_hdr(L, htxn, &htxn->s->txn.req); |
| 3113 | } |
| 3114 | |
| 3115 | __LJMP static int hlua_http_res_del_hdr(lua_State *L) |
| 3116 | { |
| 3117 | struct hlua_txn *htxn; |
| 3118 | |
| 3119 | MAY_LJMP(check_args(L, 2, "req_del_hdr")); |
| 3120 | htxn = MAY_LJMP(hlua_checkhttp(L, 1)); |
| 3121 | |
| 3122 | return hlua_http_del_hdr(L, htxn, &htxn->s->txn.rsp); |
| 3123 | } |
| 3124 | |
| 3125 | /* This function adds an header. It is a wrapper used by |
| 3126 | * the 2 following functions. |
| 3127 | */ |
| 3128 | __LJMP static inline int hlua_http_add_hdr(lua_State *L, struct hlua_txn *htxn, struct http_msg *msg) |
| 3129 | { |
| 3130 | size_t name_len; |
| 3131 | const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len)); |
| 3132 | size_t value_len; |
| 3133 | const char *value = MAY_LJMP(luaL_checklstring(L, 3, &value_len)); |
| 3134 | char *p; |
| 3135 | |
| 3136 | /* Check length. */ |
| 3137 | trash.len = value_len + name_len + 2; |
| 3138 | if (trash.len > trash.size) |
| 3139 | return 0; |
| 3140 | |
| 3141 | /* Creates the header string. */ |
| 3142 | p = trash.str; |
| 3143 | memcpy(p, name, name_len); |
| 3144 | p += name_len; |
| 3145 | *p = ':'; |
| 3146 | p++; |
| 3147 | *p = ' '; |
| 3148 | p++; |
| 3149 | memcpy(p, value, value_len); |
| 3150 | |
| 3151 | lua_pushboolean(L, http_header_add_tail2(msg, &htxn->s->txn.hdr_idx, |
| 3152 | trash.str, trash.len) != 0); |
| 3153 | |
| 3154 | return 0; |
| 3155 | } |
| 3156 | |
| 3157 | __LJMP static int hlua_http_req_add_hdr(lua_State *L) |
| 3158 | { |
| 3159 | struct hlua_txn *htxn; |
| 3160 | |
| 3161 | MAY_LJMP(check_args(L, 3, "req_add_hdr")); |
| 3162 | htxn = MAY_LJMP(hlua_checkhttp(L, 1)); |
| 3163 | |
| 3164 | return hlua_http_add_hdr(L, htxn, &htxn->s->txn.req); |
| 3165 | } |
| 3166 | |
| 3167 | __LJMP static int hlua_http_res_add_hdr(lua_State *L) |
| 3168 | { |
| 3169 | struct hlua_txn *htxn; |
| 3170 | |
| 3171 | MAY_LJMP(check_args(L, 3, "res_add_hdr")); |
| 3172 | htxn = MAY_LJMP(hlua_checkhttp(L, 1)); |
| 3173 | |
| 3174 | return hlua_http_add_hdr(L, htxn, &htxn->s->txn.rsp); |
| 3175 | } |
| 3176 | |
| 3177 | static int hlua_http_req_set_hdr(lua_State *L) |
| 3178 | { |
| 3179 | struct hlua_txn *htxn; |
| 3180 | |
| 3181 | MAY_LJMP(check_args(L, 3, "req_set_hdr")); |
| 3182 | htxn = MAY_LJMP(hlua_checkhttp(L, 1)); |
| 3183 | |
| 3184 | hlua_http_del_hdr(L, htxn, &htxn->s->txn.req); |
| 3185 | return hlua_http_add_hdr(L, htxn, &htxn->s->txn.req); |
| 3186 | } |
| 3187 | |
| 3188 | static int hlua_http_res_set_hdr(lua_State *L) |
| 3189 | { |
| 3190 | struct hlua_txn *htxn; |
| 3191 | |
| 3192 | MAY_LJMP(check_args(L, 3, "res_set_hdr")); |
| 3193 | htxn = MAY_LJMP(hlua_checkhttp(L, 1)); |
| 3194 | |
| 3195 | hlua_http_del_hdr(L, htxn, &htxn->s->txn.rsp); |
| 3196 | return hlua_http_add_hdr(L, htxn, &htxn->s->txn.rsp); |
| 3197 | } |
| 3198 | |
| 3199 | /* This function set the method. */ |
| 3200 | static int hlua_http_req_set_meth(lua_State *L) |
| 3201 | { |
| 3202 | struct hlua_txn *s = MAY_LJMP(hlua_checkhttp(L, 1)); |
| 3203 | size_t name_len; |
| 3204 | const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len)); |
| 3205 | struct http_txn *txn = &s->s->txn; |
| 3206 | |
| 3207 | lua_pushboolean(L, http_replace_req_line(0, name, name_len, s->p, s->s, txn) != -1); |
| 3208 | return 1; |
| 3209 | } |
| 3210 | |
| 3211 | /* This function set the method. */ |
| 3212 | static int hlua_http_req_set_path(lua_State *L) |
| 3213 | { |
| 3214 | struct hlua_txn *s = MAY_LJMP(hlua_checkhttp(L, 1)); |
| 3215 | size_t name_len; |
| 3216 | const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len)); |
| 3217 | struct http_txn *txn = &s->s->txn; |
| 3218 | |
| 3219 | lua_pushboolean(L, http_replace_req_line(1, name, name_len, s->p, s->s, txn) != -1); |
| 3220 | return 1; |
| 3221 | } |
| 3222 | |
| 3223 | /* This function set the query-string. */ |
| 3224 | static int hlua_http_req_set_query(lua_State *L) |
| 3225 | { |
| 3226 | struct hlua_txn *s = MAY_LJMP(hlua_checkhttp(L, 1)); |
| 3227 | size_t name_len; |
| 3228 | const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len)); |
| 3229 | struct http_txn *txn = &s->s->txn; |
| 3230 | |
| 3231 | /* Check length. */ |
| 3232 | if (name_len > trash.size - 1) { |
| 3233 | lua_pushboolean(L, 0); |
| 3234 | return 1; |
| 3235 | } |
| 3236 | |
| 3237 | /* Add the mark question as prefix. */ |
| 3238 | chunk_reset(&trash); |
| 3239 | trash.str[trash.len++] = '?'; |
| 3240 | memcpy(trash.str + trash.len, name, name_len); |
| 3241 | trash.len += name_len; |
| 3242 | |
| 3243 | lua_pushboolean(L, http_replace_req_line(2, trash.str, trash.len, s->p, s->s, txn) != -1); |
| 3244 | return 1; |
| 3245 | } |
| 3246 | |
| 3247 | /* This function set the uri. */ |
| 3248 | static int hlua_http_req_set_uri(lua_State *L) |
| 3249 | { |
| 3250 | struct hlua_txn *s = MAY_LJMP(hlua_checkhttp(L, 1)); |
| 3251 | size_t name_len; |
| 3252 | const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len)); |
| 3253 | struct http_txn *txn = &s->s->txn; |
| 3254 | |
| 3255 | lua_pushboolean(L, http_replace_req_line(3, name, name_len, s->p, s->s, txn) != -1); |
| 3256 | return 1; |
| 3257 | } |
| 3258 | |
| 3259 | /* |
| 3260 | * |
| 3261 | * |
Thierry FOURNIER | 65f34c6 | 2015-02-16 20:11:43 +0100 | [diff] [blame] | 3262 | * Class TXN |
| 3263 | * |
| 3264 | * |
| 3265 | */ |
| 3266 | |
| 3267 | /* Returns a struct hlua_session if the stack entry "ud" is |
| 3268 | * a class session, otherwise it throws an error. |
| 3269 | */ |
| 3270 | __LJMP static struct hlua_txn *hlua_checktxn(lua_State *L, int ud) |
| 3271 | { |
| 3272 | return (struct hlua_txn *)MAY_LJMP(hlua_checkudata(L, ud, class_txn_ref)); |
| 3273 | } |
| 3274 | |
Willy Tarreau | 5955166 | 2015-03-10 14:23:13 +0100 | [diff] [blame] | 3275 | __LJMP static int hlua_set_priv(lua_State *L) |
Thierry FOURNIER | 05c0b8a | 2015-02-25 11:43:21 +0100 | [diff] [blame] | 3276 | { |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 3277 | struct hlua *hlua; |
| 3278 | |
Thierry FOURNIER | 05c0b8a | 2015-02-25 11:43:21 +0100 | [diff] [blame] | 3279 | MAY_LJMP(check_args(L, 2, "set_priv")); |
| 3280 | |
| 3281 | /* It is useles to retrieve the session, but this function |
| 3282 | * runs only in a session context. |
| 3283 | */ |
| 3284 | MAY_LJMP(hlua_checktxn(L, 1)); |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 3285 | hlua = hlua_gethlua(L); |
Thierry FOURNIER | 05c0b8a | 2015-02-25 11:43:21 +0100 | [diff] [blame] | 3286 | |
| 3287 | /* Remove previous value. */ |
| 3288 | if (hlua->Mref != -1) |
| 3289 | luaL_unref(L, hlua->Mref, LUA_REGISTRYINDEX); |
| 3290 | |
| 3291 | /* Get and store new value. */ |
| 3292 | lua_pushvalue(L, 2); /* Copy the element 2 at the top of the stack. */ |
| 3293 | hlua->Mref = luaL_ref(L, LUA_REGISTRYINDEX); /* pop the previously pushed value. */ |
| 3294 | |
| 3295 | return 0; |
| 3296 | } |
| 3297 | |
Willy Tarreau | 5955166 | 2015-03-10 14:23:13 +0100 | [diff] [blame] | 3298 | __LJMP static int hlua_get_priv(lua_State *L) |
Thierry FOURNIER | 05c0b8a | 2015-02-25 11:43:21 +0100 | [diff] [blame] | 3299 | { |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 3300 | struct hlua *hlua; |
| 3301 | |
Thierry FOURNIER | 05c0b8a | 2015-02-25 11:43:21 +0100 | [diff] [blame] | 3302 | MAY_LJMP(check_args(L, 1, "get_priv")); |
| 3303 | |
| 3304 | /* It is useles to retrieve the session, but this function |
| 3305 | * runs only in a session context. |
| 3306 | */ |
| 3307 | MAY_LJMP(hlua_checktxn(L, 1)); |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 3308 | hlua = hlua_gethlua(L); |
Thierry FOURNIER | 05c0b8a | 2015-02-25 11:43:21 +0100 | [diff] [blame] | 3309 | |
| 3310 | /* Push configuration index in the stack. */ |
| 3311 | lua_rawgeti(L, LUA_REGISTRYINDEX, hlua->Mref); |
| 3312 | |
| 3313 | return 1; |
| 3314 | } |
| 3315 | |
Thierry FOURNIER | 65f34c6 | 2015-02-16 20:11:43 +0100 | [diff] [blame] | 3316 | /* Create stack entry containing a class TXN. This function |
| 3317 | * return 0 if the stack does not contains free slots, |
| 3318 | * otherwise it returns 1. |
| 3319 | */ |
| 3320 | static int hlua_txn_new(lua_State *L, struct session *s, struct proxy *p, void *l7) |
| 3321 | { |
| 3322 | struct hlua_txn *hs; |
| 3323 | |
| 3324 | /* Check stack size. */ |
Thierry FOURNIER | 2297bc2 | 2015-03-11 17:43:33 +0100 | [diff] [blame] | 3325 | if (!lua_checkstack(L, 3)) |
Thierry FOURNIER | 65f34c6 | 2015-02-16 20:11:43 +0100 | [diff] [blame] | 3326 | return 0; |
| 3327 | |
| 3328 | /* NOTE: The allocation never fails. The failure |
| 3329 | * throw an error, and the function never returns. |
| 3330 | * if the throw is not avalaible, the process is aborted. |
| 3331 | */ |
Thierry FOURNIER | 2297bc2 | 2015-03-11 17:43:33 +0100 | [diff] [blame] | 3332 | /* Create the object: obj[0] = userdata. */ |
| 3333 | lua_newtable(L); |
Thierry FOURNIER | 65f34c6 | 2015-02-16 20:11:43 +0100 | [diff] [blame] | 3334 | hs = lua_newuserdata(L, sizeof(struct hlua_txn)); |
Thierry FOURNIER | 2297bc2 | 2015-03-11 17:43:33 +0100 | [diff] [blame] | 3335 | lua_rawseti(L, -2, 0); |
| 3336 | |
Thierry FOURNIER | 65f34c6 | 2015-02-16 20:11:43 +0100 | [diff] [blame] | 3337 | hs->s = s; |
| 3338 | hs->p = p; |
| 3339 | hs->l7 = l7; |
| 3340 | |
Thierry FOURNIER | bb53c7b | 2015-03-11 18:28:02 +0100 | [diff] [blame] | 3341 | /* Create the "f" field that contains a list of fetches. */ |
| 3342 | lua_pushstring(L, "f"); |
Thierry FOURNIER | 2694a1a | 2015-03-11 20:13:36 +0100 | [diff] [blame] | 3343 | if (!hlua_fetches_new(L, hs, 0)) |
| 3344 | return 0; |
| 3345 | lua_settable(L, -3); |
| 3346 | |
| 3347 | /* Create the "sf" field that contains a list of stringsafe fetches. */ |
| 3348 | lua_pushstring(L, "sf"); |
| 3349 | if (!hlua_fetches_new(L, hs, 1)) |
Thierry FOURNIER | bb53c7b | 2015-03-11 18:28:02 +0100 | [diff] [blame] | 3350 | return 0; |
| 3351 | lua_settable(L, -3); |
| 3352 | |
Thierry FOURNIER | 594afe7 | 2015-03-10 23:58:30 +0100 | [diff] [blame] | 3353 | /* Create the "c" field that contains a list of converters. */ |
| 3354 | lua_pushstring(L, "c"); |
Thierry FOURNIER | 2694a1a | 2015-03-11 20:13:36 +0100 | [diff] [blame] | 3355 | if (!hlua_converters_new(L, hs, 0)) |
| 3356 | return 0; |
| 3357 | lua_settable(L, -3); |
| 3358 | |
| 3359 | /* Create the "sc" field that contains a list of stringsafe converters. */ |
| 3360 | lua_pushstring(L, "sc"); |
| 3361 | if (!hlua_converters_new(L, hs, 1)) |
Thierry FOURNIER | 594afe7 | 2015-03-10 23:58:30 +0100 | [diff] [blame] | 3362 | return 0; |
| 3363 | lua_settable(L, -3); |
| 3364 | |
Thierry FOURNIER | 397826a | 2015-03-11 19:39:09 +0100 | [diff] [blame] | 3365 | /* Create the "req" field that contains the request channel object. */ |
| 3366 | lua_pushstring(L, "req"); |
Willy Tarreau | 2a71af4 | 2015-03-10 13:51:50 +0100 | [diff] [blame] | 3367 | if (!hlua_channel_new(L, &s->req)) |
Thierry FOURNIER | 397826a | 2015-03-11 19:39:09 +0100 | [diff] [blame] | 3368 | return 0; |
| 3369 | lua_settable(L, -3); |
| 3370 | |
| 3371 | /* Create the "res" field that contains the response channel object. */ |
| 3372 | lua_pushstring(L, "res"); |
Willy Tarreau | 2a71af4 | 2015-03-10 13:51:50 +0100 | [diff] [blame] | 3373 | if (!hlua_channel_new(L, &s->res)) |
Thierry FOURNIER | 397826a | 2015-03-11 19:39:09 +0100 | [diff] [blame] | 3374 | return 0; |
| 3375 | lua_settable(L, -3); |
| 3376 | |
Thierry FOURNIER | 08504f4 | 2015-03-16 14:17:08 +0100 | [diff] [blame] | 3377 | /* Creates the HTTP object is the current proxy allows http. */ |
| 3378 | lua_pushstring(L, "http"); |
| 3379 | if (p->mode == PR_MODE_HTTP) { |
| 3380 | if (!hlua_http_new(L, hs)) |
| 3381 | return 0; |
| 3382 | } |
| 3383 | else |
| 3384 | lua_pushnil(L); |
| 3385 | lua_settable(L, -3); |
| 3386 | |
Thierry FOURNIER | 65f34c6 | 2015-02-16 20:11:43 +0100 | [diff] [blame] | 3387 | /* Pop a class sesison metatable and affect it to the userdata. */ |
| 3388 | lua_rawgeti(L, LUA_REGISTRYINDEX, class_txn_ref); |
| 3389 | lua_setmetatable(L, -2); |
| 3390 | |
| 3391 | return 1; |
| 3392 | } |
| 3393 | |
Thierry FOURNIER | c798b5d | 2015-03-17 01:09:57 +0100 | [diff] [blame] | 3394 | __LJMP static int hlua_txn_deflog(lua_State *L) |
| 3395 | { |
| 3396 | const char *msg; |
| 3397 | struct hlua_txn *htxn; |
| 3398 | |
| 3399 | MAY_LJMP(check_args(L, 2, "deflog")); |
| 3400 | htxn = MAY_LJMP(hlua_checktxn(L, 1)); |
| 3401 | msg = MAY_LJMP(luaL_checkstring(L, 2)); |
| 3402 | |
| 3403 | hlua_sendlog(htxn->s->be, htxn->s->logs.level, msg); |
| 3404 | return 0; |
| 3405 | } |
| 3406 | |
| 3407 | __LJMP static int hlua_txn_log(lua_State *L) |
| 3408 | { |
| 3409 | int level; |
| 3410 | const char *msg; |
| 3411 | struct hlua_txn *htxn; |
| 3412 | |
| 3413 | MAY_LJMP(check_args(L, 3, "log")); |
| 3414 | htxn = MAY_LJMP(hlua_checktxn(L, 1)); |
| 3415 | level = MAY_LJMP(luaL_checkinteger(L, 2)); |
| 3416 | msg = MAY_LJMP(luaL_checkstring(L, 3)); |
| 3417 | |
| 3418 | if (level < 0 || level >= NB_LOG_LEVELS) |
| 3419 | WILL_LJMP(luaL_argerror(L, 1, "Invalid loglevel.")); |
| 3420 | |
| 3421 | hlua_sendlog(htxn->s->be, level, msg); |
| 3422 | return 0; |
| 3423 | } |
| 3424 | |
| 3425 | __LJMP static int hlua_txn_log_debug(lua_State *L) |
| 3426 | { |
| 3427 | const char *msg; |
| 3428 | struct hlua_txn *htxn; |
| 3429 | |
| 3430 | MAY_LJMP(check_args(L, 2, "Debug")); |
| 3431 | htxn = MAY_LJMP(hlua_checktxn(L, 1)); |
| 3432 | msg = MAY_LJMP(luaL_checkstring(L, 2)); |
| 3433 | hlua_sendlog(htxn->s->be, LOG_DEBUG, msg); |
| 3434 | return 0; |
| 3435 | } |
| 3436 | |
| 3437 | __LJMP static int hlua_txn_log_info(lua_State *L) |
| 3438 | { |
| 3439 | const char *msg; |
| 3440 | struct hlua_txn *htxn; |
| 3441 | |
| 3442 | MAY_LJMP(check_args(L, 2, "Info")); |
| 3443 | htxn = MAY_LJMP(hlua_checktxn(L, 1)); |
| 3444 | msg = MAY_LJMP(luaL_checkstring(L, 2)); |
| 3445 | hlua_sendlog(htxn->s->be, LOG_INFO, msg); |
| 3446 | return 0; |
| 3447 | } |
| 3448 | |
| 3449 | __LJMP static int hlua_txn_log_warning(lua_State *L) |
| 3450 | { |
| 3451 | const char *msg; |
| 3452 | struct hlua_txn *htxn; |
| 3453 | |
| 3454 | MAY_LJMP(check_args(L, 2, "Warning")); |
| 3455 | htxn = MAY_LJMP(hlua_checktxn(L, 1)); |
| 3456 | msg = MAY_LJMP(luaL_checkstring(L, 2)); |
| 3457 | hlua_sendlog(htxn->s->be, LOG_WARNING, msg); |
| 3458 | return 0; |
| 3459 | } |
| 3460 | |
| 3461 | __LJMP static int hlua_txn_log_alert(lua_State *L) |
| 3462 | { |
| 3463 | const char *msg; |
| 3464 | struct hlua_txn *htxn; |
| 3465 | |
| 3466 | MAY_LJMP(check_args(L, 2, "Alert")); |
| 3467 | htxn = MAY_LJMP(hlua_checktxn(L, 1)); |
| 3468 | msg = MAY_LJMP(luaL_checkstring(L, 2)); |
| 3469 | hlua_sendlog(htxn->s->be, LOG_ALERT, msg); |
| 3470 | return 0; |
| 3471 | } |
| 3472 | |
Thierry FOURNIER | 2cce353 | 2015-03-16 12:04:16 +0100 | [diff] [blame] | 3473 | __LJMP static int hlua_txn_set_loglevel(lua_State *L) |
| 3474 | { |
| 3475 | struct hlua_txn *htxn; |
| 3476 | int ll; |
| 3477 | |
| 3478 | MAY_LJMP(check_args(L, 2, "set_loglevel")); |
| 3479 | htxn = MAY_LJMP(hlua_checktxn(L, 1)); |
| 3480 | ll = MAY_LJMP(luaL_checkinteger(L, 2)); |
| 3481 | |
| 3482 | if (ll < 0 || ll > 7) |
| 3483 | WILL_LJMP(luaL_argerror(L, 2, "Bad log level. It must be between 0 and 7")); |
| 3484 | |
| 3485 | htxn->s->logs.level = ll; |
| 3486 | return 0; |
| 3487 | } |
| 3488 | |
| 3489 | __LJMP static int hlua_txn_set_tos(lua_State *L) |
| 3490 | { |
| 3491 | struct hlua_txn *htxn; |
| 3492 | struct connection *cli_conn; |
| 3493 | int tos; |
| 3494 | |
| 3495 | MAY_LJMP(check_args(L, 2, "set_tos")); |
| 3496 | htxn = MAY_LJMP(hlua_checktxn(L, 1)); |
| 3497 | tos = MAY_LJMP(luaL_checkinteger(L, 2)); |
| 3498 | |
| 3499 | if ((cli_conn = objt_conn(htxn->s->si[0].end)) && conn_ctrl_ready(cli_conn)) |
| 3500 | inet_set_tos(cli_conn->t.sock.fd, cli_conn->addr.from, tos); |
| 3501 | |
| 3502 | return 0; |
| 3503 | } |
| 3504 | |
| 3505 | __LJMP static int hlua_txn_set_mark(lua_State *L) |
| 3506 | { |
| 3507 | #ifdef SO_MARK |
| 3508 | struct hlua_txn *htxn; |
| 3509 | struct connection *cli_conn; |
| 3510 | int mark; |
| 3511 | |
| 3512 | MAY_LJMP(check_args(L, 2, "set_mark")); |
| 3513 | htxn = MAY_LJMP(hlua_checktxn(L, 1)); |
| 3514 | mark = MAY_LJMP(luaL_checkinteger(L, 2)); |
| 3515 | |
| 3516 | if ((cli_conn = objt_conn(htxn->s->si[0].end)) && conn_ctrl_ready(cli_conn)) |
| 3517 | setsockopt(cli_conn->t.sock.fd, SOL_SOCKET, SO_MARK, &mark, sizeof(int)); |
| 3518 | #endif |
| 3519 | return 0; |
| 3520 | } |
| 3521 | |
Thierry FOURNIER | 893bfa3 | 2015-02-17 18:42:34 +0100 | [diff] [blame] | 3522 | /* This function is an Lua binding that send pending data |
| 3523 | * to the client, and close the stream interface. |
| 3524 | */ |
| 3525 | __LJMP static int hlua_txn_close(lua_State *L) |
| 3526 | { |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 3527 | struct hlua_txn *s; |
Willy Tarreau | 8138967 | 2015-03-10 12:03:52 +0100 | [diff] [blame] | 3528 | struct channel *ic, *oc; |
Thierry FOURNIER | 893bfa3 | 2015-02-17 18:42:34 +0100 | [diff] [blame] | 3529 | |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 3530 | MAY_LJMP(check_args(L, 1, "close")); |
| 3531 | s = MAY_LJMP(hlua_checktxn(L, 1)); |
Thierry FOURNIER | 893bfa3 | 2015-02-17 18:42:34 +0100 | [diff] [blame] | 3532 | |
Willy Tarreau | 94aa617 | 2015-03-13 14:19:06 +0100 | [diff] [blame] | 3533 | ic = &s->s->req; |
| 3534 | oc = &s->s->res; |
Willy Tarreau | 8138967 | 2015-03-10 12:03:52 +0100 | [diff] [blame] | 3535 | |
| 3536 | channel_abort(ic); |
| 3537 | channel_auto_close(ic); |
| 3538 | channel_erase(ic); |
| 3539 | channel_auto_read(oc); |
| 3540 | channel_auto_close(oc); |
| 3541 | channel_shutr_now(oc); |
Thierry FOURNIER | 893bfa3 | 2015-02-17 18:42:34 +0100 | [diff] [blame] | 3542 | |
Thierry FOURNIER | c798b5d | 2015-03-17 01:09:57 +0100 | [diff] [blame] | 3543 | return 0; |
| 3544 | } |
| 3545 | |
| 3546 | __LJMP static int hlua_log(lua_State *L) |
| 3547 | { |
| 3548 | int level; |
| 3549 | const char *msg; |
| 3550 | |
| 3551 | MAY_LJMP(check_args(L, 2, "log")); |
| 3552 | level = MAY_LJMP(luaL_checkinteger(L, 1)); |
| 3553 | msg = MAY_LJMP(luaL_checkstring(L, 2)); |
| 3554 | |
| 3555 | if (level < 0 || level >= NB_LOG_LEVELS) |
| 3556 | WILL_LJMP(luaL_argerror(L, 1, "Invalid loglevel.")); |
| 3557 | |
| 3558 | hlua_sendlog(NULL, level, msg); |
| 3559 | return 0; |
| 3560 | } |
| 3561 | |
| 3562 | __LJMP static int hlua_log_debug(lua_State *L) |
| 3563 | { |
| 3564 | const char *msg; |
| 3565 | |
| 3566 | MAY_LJMP(check_args(L, 1, "debug")); |
| 3567 | msg = MAY_LJMP(luaL_checkstring(L, 1)); |
| 3568 | hlua_sendlog(NULL, LOG_DEBUG, msg); |
| 3569 | return 0; |
| 3570 | } |
| 3571 | |
| 3572 | __LJMP static int hlua_log_info(lua_State *L) |
| 3573 | { |
| 3574 | const char *msg; |
| 3575 | |
| 3576 | MAY_LJMP(check_args(L, 1, "info")); |
| 3577 | msg = MAY_LJMP(luaL_checkstring(L, 1)); |
| 3578 | hlua_sendlog(NULL, LOG_INFO, msg); |
| 3579 | return 0; |
| 3580 | } |
| 3581 | |
| 3582 | __LJMP static int hlua_log_warning(lua_State *L) |
| 3583 | { |
| 3584 | const char *msg; |
| 3585 | |
| 3586 | MAY_LJMP(check_args(L, 1, "warning")); |
| 3587 | msg = MAY_LJMP(luaL_checkstring(L, 1)); |
| 3588 | hlua_sendlog(NULL, LOG_WARNING, msg); |
| 3589 | return 0; |
| 3590 | } |
| 3591 | |
| 3592 | __LJMP static int hlua_log_alert(lua_State *L) |
| 3593 | { |
| 3594 | const char *msg; |
| 3595 | |
| 3596 | MAY_LJMP(check_args(L, 1, "alert")); |
| 3597 | msg = MAY_LJMP(luaL_checkstring(L, 1)); |
| 3598 | hlua_sendlog(NULL, LOG_ALERT, msg); |
Thierry FOURNIER | 893bfa3 | 2015-02-17 18:42:34 +0100 | [diff] [blame] | 3599 | return 0; |
| 3600 | } |
| 3601 | |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 3602 | __LJMP static int hlua_sleep_yield(lua_State *L, int status, lua_KContext ctx) |
Thierry FOURNIER | 5b8608f | 2015-02-16 19:43:25 +0100 | [diff] [blame] | 3603 | { |
| 3604 | int wakeup_ms = lua_tointeger(L, -1); |
| 3605 | if (now_ms < wakeup_ms) |
Thierry FOURNIER | d44731f | 2015-03-04 15:51:09 +0100 | [diff] [blame] | 3606 | WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_sleep_yield, wakeup_ms, 0)); |
Thierry FOURNIER | 5b8608f | 2015-02-16 19:43:25 +0100 | [diff] [blame] | 3607 | return 0; |
| 3608 | } |
| 3609 | |
| 3610 | __LJMP static int hlua_sleep(lua_State *L) |
| 3611 | { |
| 3612 | unsigned int delay; |
Thierry FOURNIER | d44731f | 2015-03-04 15:51:09 +0100 | [diff] [blame] | 3613 | unsigned int wakeup_ms; |
Thierry FOURNIER | 5b8608f | 2015-02-16 19:43:25 +0100 | [diff] [blame] | 3614 | |
Thierry FOURNIER | d44731f | 2015-03-04 15:51:09 +0100 | [diff] [blame] | 3615 | MAY_LJMP(check_args(L, 1, "sleep")); |
Thierry FOURNIER | 5b8608f | 2015-02-16 19:43:25 +0100 | [diff] [blame] | 3616 | |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 3617 | delay = MAY_LJMP(luaL_checkinteger(L, 1)) * 1000; |
Thierry FOURNIER | d44731f | 2015-03-04 15:51:09 +0100 | [diff] [blame] | 3618 | wakeup_ms = tick_add(now_ms, delay); |
| 3619 | lua_pushinteger(L, wakeup_ms); |
Thierry FOURNIER | 5b8608f | 2015-02-16 19:43:25 +0100 | [diff] [blame] | 3620 | |
Thierry FOURNIER | d44731f | 2015-03-04 15:51:09 +0100 | [diff] [blame] | 3621 | WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_sleep_yield, wakeup_ms, 0)); |
| 3622 | return 0; |
Thierry FOURNIER | 5b8608f | 2015-02-16 19:43:25 +0100 | [diff] [blame] | 3623 | } |
| 3624 | |
Thierry FOURNIER | d44731f | 2015-03-04 15:51:09 +0100 | [diff] [blame] | 3625 | __LJMP static int hlua_msleep(lua_State *L) |
Thierry FOURNIER | 5b8608f | 2015-02-16 19:43:25 +0100 | [diff] [blame] | 3626 | { |
| 3627 | unsigned int delay; |
Thierry FOURNIER | d44731f | 2015-03-04 15:51:09 +0100 | [diff] [blame] | 3628 | unsigned int wakeup_ms; |
Thierry FOURNIER | 5b8608f | 2015-02-16 19:43:25 +0100 | [diff] [blame] | 3629 | |
Thierry FOURNIER | d44731f | 2015-03-04 15:51:09 +0100 | [diff] [blame] | 3630 | MAY_LJMP(check_args(L, 1, "msleep")); |
Thierry FOURNIER | 5b8608f | 2015-02-16 19:43:25 +0100 | [diff] [blame] | 3631 | |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 3632 | delay = MAY_LJMP(luaL_checkinteger(L, 1)); |
Thierry FOURNIER | d44731f | 2015-03-04 15:51:09 +0100 | [diff] [blame] | 3633 | wakeup_ms = tick_add(now_ms, delay); |
| 3634 | lua_pushinteger(L, wakeup_ms); |
Thierry FOURNIER | 5b8608f | 2015-02-16 19:43:25 +0100 | [diff] [blame] | 3635 | |
Thierry FOURNIER | d44731f | 2015-03-04 15:51:09 +0100 | [diff] [blame] | 3636 | WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_sleep_yield, wakeup_ms, 0)); |
| 3637 | return 0; |
Thierry FOURNIER | 5b8608f | 2015-02-16 19:43:25 +0100 | [diff] [blame] | 3638 | } |
| 3639 | |
Thierry FOURNIER | 13416fe | 2015-02-17 15:01:59 +0100 | [diff] [blame] | 3640 | /* This functionis an LUA binding. it permits to give back |
| 3641 | * the hand at the HAProxy scheduler. It is used when the |
| 3642 | * LUA processing consumes a lot of time. |
| 3643 | */ |
Thierry FOURNIER | f90838b | 2015-03-06 13:48:32 +0100 | [diff] [blame] | 3644 | __LJMP static int hlua_yield_yield(lua_State *L, int status, lua_KContext ctx) |
Thierry FOURNIER | d44731f | 2015-03-04 15:51:09 +0100 | [diff] [blame] | 3645 | { |
| 3646 | return 0; |
| 3647 | } |
| 3648 | |
Thierry FOURNIER | 13416fe | 2015-02-17 15:01:59 +0100 | [diff] [blame] | 3649 | __LJMP static int hlua_yield(lua_State *L) |
| 3650 | { |
Thierry FOURNIER | d44731f | 2015-03-04 15:51:09 +0100 | [diff] [blame] | 3651 | WILL_LJMP(hlua_yieldk(L, 0, 0, hlua_yield_yield, TICK_ETERNITY, HLUA_CTRLYIELD)); |
| 3652 | return 0; |
Thierry FOURNIER | 13416fe | 2015-02-17 15:01:59 +0100 | [diff] [blame] | 3653 | } |
| 3654 | |
Thierry FOURNIER | 37196f4 | 2015-02-16 19:34:56 +0100 | [diff] [blame] | 3655 | /* This function change the nice of the currently executed |
| 3656 | * task. It is used set low or high priority at the current |
| 3657 | * task. |
| 3658 | */ |
Willy Tarreau | 5955166 | 2015-03-10 14:23:13 +0100 | [diff] [blame] | 3659 | __LJMP static int hlua_set_nice(lua_State *L) |
Thierry FOURNIER | 37196f4 | 2015-02-16 19:34:56 +0100 | [diff] [blame] | 3660 | { |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 3661 | struct hlua *hlua; |
| 3662 | int nice; |
Thierry FOURNIER | 37196f4 | 2015-02-16 19:34:56 +0100 | [diff] [blame] | 3663 | |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 3664 | MAY_LJMP(check_args(L, 1, "set_nice")); |
| 3665 | hlua = hlua_gethlua(L); |
| 3666 | nice = MAY_LJMP(luaL_checkinteger(L, 1)); |
Thierry FOURNIER | 37196f4 | 2015-02-16 19:34:56 +0100 | [diff] [blame] | 3667 | |
| 3668 | /* If he task is not set, I'm in a start mode. */ |
| 3669 | if (!hlua || !hlua->task) |
| 3670 | return 0; |
| 3671 | |
| 3672 | if (nice < -1024) |
| 3673 | nice = -1024; |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 3674 | else if (nice > 1024) |
Thierry FOURNIER | 37196f4 | 2015-02-16 19:34:56 +0100 | [diff] [blame] | 3675 | nice = 1024; |
| 3676 | |
| 3677 | hlua->task->nice = nice; |
| 3678 | return 0; |
| 3679 | } |
| 3680 | |
Thierry FOURNIER | 24f3353 | 2015-01-23 12:13:00 +0100 | [diff] [blame] | 3681 | /* This function is used as a calback of a task. It is called by the |
| 3682 | * HAProxy task subsystem when the task is awaked. The LUA runtime can |
| 3683 | * return an E_AGAIN signal, the emmiter of this signal must set a |
| 3684 | * signal to wake the task. |
| 3685 | */ |
| 3686 | static struct task *hlua_process_task(struct task *task) |
| 3687 | { |
| 3688 | struct hlua *hlua = task->context; |
| 3689 | enum hlua_exec status; |
| 3690 | |
| 3691 | /* We need to remove the task from the wait queue before executing |
| 3692 | * the Lua code because we don't know if it needs to wait for |
| 3693 | * another timer or not in the case of E_AGAIN. |
| 3694 | */ |
| 3695 | task_delete(task); |
| 3696 | |
Thierry FOURNIER | bd41349 | 2015-03-03 16:52:26 +0100 | [diff] [blame] | 3697 | /* If it is the first call to the task, we must initialize the |
| 3698 | * execution timeouts. |
| 3699 | */ |
| 3700 | if (!HLUA_IS_RUNNING(hlua)) |
| 3701 | hlua->expire = tick_add(now_ms, hlua_timeout_task); |
| 3702 | |
Thierry FOURNIER | 24f3353 | 2015-01-23 12:13:00 +0100 | [diff] [blame] | 3703 | /* Execute the Lua code. */ |
| 3704 | status = hlua_ctx_resume(hlua, 1); |
| 3705 | |
| 3706 | switch (status) { |
| 3707 | /* finished or yield */ |
| 3708 | case HLUA_E_OK: |
| 3709 | hlua_ctx_destroy(hlua); |
| 3710 | task_delete(task); |
| 3711 | task_free(task); |
| 3712 | break; |
| 3713 | |
Thierry FOURNIER | c42c1ae | 2015-03-03 17:17:55 +0100 | [diff] [blame] | 3714 | case HLUA_E_AGAIN: /* co process or timeout wake me later. */ |
| 3715 | if (hlua->wake_time != TICK_ETERNITY) |
| 3716 | task_schedule(task, hlua->wake_time); |
Thierry FOURNIER | 24f3353 | 2015-01-23 12:13:00 +0100 | [diff] [blame] | 3717 | break; |
| 3718 | |
| 3719 | /* finished with error. */ |
| 3720 | case HLUA_E_ERRMSG: |
| 3721 | send_log(NULL, LOG_ERR, "Lua task: %s.", lua_tostring(hlua->T, -1)); |
| 3722 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 3723 | Alert("Lua task: %s.\n", lua_tostring(hlua->T, -1)); |
| 3724 | hlua_ctx_destroy(hlua); |
| 3725 | task_delete(task); |
| 3726 | task_free(task); |
| 3727 | break; |
| 3728 | |
| 3729 | case HLUA_E_ERR: |
| 3730 | default: |
| 3731 | send_log(NULL, LOG_ERR, "Lua task: unknown error."); |
| 3732 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 3733 | Alert("Lua task: unknown error.\n"); |
| 3734 | hlua_ctx_destroy(hlua); |
| 3735 | task_delete(task); |
| 3736 | task_free(task); |
| 3737 | break; |
| 3738 | } |
| 3739 | return NULL; |
| 3740 | } |
| 3741 | |
Thierry FOURNIER | a4a0f3d | 2015-01-23 12:08:30 +0100 | [diff] [blame] | 3742 | /* This function is an LUA binding that register LUA function to be |
| 3743 | * executed after the HAProxy configuration parsing and before the |
| 3744 | * HAProxy scheduler starts. This function expect only one LUA |
| 3745 | * argument that is a function. This function returns nothing, but |
| 3746 | * throws if an error is encountered. |
| 3747 | */ |
| 3748 | __LJMP static int hlua_register_init(lua_State *L) |
| 3749 | { |
| 3750 | struct hlua_init_function *init; |
| 3751 | int ref; |
| 3752 | |
| 3753 | MAY_LJMP(check_args(L, 1, "register_init")); |
| 3754 | |
| 3755 | ref = MAY_LJMP(hlua_checkfunction(L, 1)); |
| 3756 | |
| 3757 | init = malloc(sizeof(*init)); |
| 3758 | if (!init) |
| 3759 | WILL_LJMP(luaL_error(L, "lua out of memory error.")); |
| 3760 | |
| 3761 | init->function_ref = ref; |
| 3762 | LIST_ADDQ(&hlua_init_functions, &init->l); |
| 3763 | return 0; |
| 3764 | } |
| 3765 | |
Thierry FOURNIER | 24f3353 | 2015-01-23 12:13:00 +0100 | [diff] [blame] | 3766 | /* This functio is an LUA binding. It permits to register a task |
| 3767 | * executed in parallel of the main HAroxy activity. The task is |
| 3768 | * created and it is set in the HAProxy scheduler. It can be called |
| 3769 | * from the "init" section, "post init" or during the runtime. |
| 3770 | * |
| 3771 | * Lua prototype: |
| 3772 | * |
| 3773 | * <none> core.register_task(<function>) |
| 3774 | */ |
| 3775 | static int hlua_register_task(lua_State *L) |
| 3776 | { |
| 3777 | struct hlua *hlua; |
| 3778 | struct task *task; |
| 3779 | int ref; |
| 3780 | |
| 3781 | MAY_LJMP(check_args(L, 1, "register_task")); |
| 3782 | |
| 3783 | ref = MAY_LJMP(hlua_checkfunction(L, 1)); |
| 3784 | |
| 3785 | hlua = malloc(sizeof(*hlua)); |
| 3786 | if (!hlua) |
| 3787 | WILL_LJMP(luaL_error(L, "lua out of memory error.")); |
| 3788 | |
| 3789 | task = task_new(); |
| 3790 | task->context = hlua; |
| 3791 | task->process = hlua_process_task; |
| 3792 | |
| 3793 | if (!hlua_ctx_init(hlua, task)) |
| 3794 | WILL_LJMP(luaL_error(L, "lua out of memory error.")); |
| 3795 | |
| 3796 | /* Restore the function in the stack. */ |
| 3797 | lua_rawgeti(hlua->T, LUA_REGISTRYINDEX, ref); |
| 3798 | hlua->nargs = 0; |
| 3799 | |
| 3800 | /* Schedule task. */ |
| 3801 | task_schedule(task, now_ms); |
| 3802 | |
| 3803 | return 0; |
| 3804 | } |
| 3805 | |
Thierry FOURNIER | 9be813f | 2015-02-16 20:21:12 +0100 | [diff] [blame] | 3806 | /* Wrapper called by HAProxy to execute an LUA converter. This wrapper |
| 3807 | * doesn't allow "yield" functions because the HAProxy engine cannot |
| 3808 | * resume converters. |
| 3809 | */ |
| 3810 | static int hlua_sample_conv_wrapper(struct session *session, const struct arg *arg_p, |
| 3811 | struct sample *smp, void *private) |
| 3812 | { |
| 3813 | struct hlua_function *fcn = (struct hlua_function *)private; |
| 3814 | |
Thierry FOURNIER | 05ac424 | 2015-02-27 18:37:27 +0100 | [diff] [blame] | 3815 | /* In the execution wrappers linked with a session, the |
| 3816 | * Lua context can be not initialized. This behavior |
| 3817 | * permits to save performances because a systematic |
| 3818 | * Lua initialization cause 5% performances loss. |
| 3819 | */ |
| 3820 | if (!session->hlua.T && !hlua_ctx_init(&session->hlua, session->task)) { |
| 3821 | send_log(session->be, LOG_ERR, "Lua converter '%s': can't initialize Lua context.", fcn->name); |
| 3822 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 3823 | Alert("Lua converter '%s': can't initialize Lua context.\n", fcn->name); |
| 3824 | return 0; |
| 3825 | } |
| 3826 | |
Thierry FOURNIER | 9be813f | 2015-02-16 20:21:12 +0100 | [diff] [blame] | 3827 | /* If it is the first run, initialize the data for the call. */ |
Thierry FOURNIER | a097fdf | 2015-03-03 15:17:35 +0100 | [diff] [blame] | 3828 | if (!HLUA_IS_RUNNING(&session->hlua)) { |
Thierry FOURNIER | 9be813f | 2015-02-16 20:21:12 +0100 | [diff] [blame] | 3829 | /* Check stack available size. */ |
| 3830 | if (!lua_checkstack(session->hlua.T, 1)) { |
| 3831 | send_log(session->be, LOG_ERR, "Lua converter '%s': full stack.", fcn->name); |
| 3832 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 3833 | Alert("Lua converter '%s': full stack.\n", fcn->name); |
| 3834 | return 0; |
| 3835 | } |
| 3836 | |
| 3837 | /* Restore the function in the stack. */ |
| 3838 | lua_rawgeti(session->hlua.T, LUA_REGISTRYINDEX, fcn->function_ref); |
| 3839 | |
| 3840 | /* convert input sample and pust-it in the stack. */ |
| 3841 | if (!lua_checkstack(session->hlua.T, 1)) { |
| 3842 | send_log(session->be, LOG_ERR, "Lua converter '%s': full stack.", fcn->name); |
| 3843 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 3844 | Alert("Lua converter '%s': full stack.\n", fcn->name); |
| 3845 | return 0; |
| 3846 | } |
| 3847 | hlua_smp2lua(session->hlua.T, smp); |
| 3848 | session->hlua.nargs = 2; |
| 3849 | |
| 3850 | /* push keywords in the stack. */ |
| 3851 | if (arg_p) { |
| 3852 | for (; arg_p->type != ARGT_STOP; arg_p++) { |
| 3853 | if (!lua_checkstack(session->hlua.T, 1)) { |
| 3854 | send_log(session->be, LOG_ERR, "Lua converter '%s': full stack.", fcn->name); |
| 3855 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 3856 | Alert("Lua converter '%s': full stack.\n", fcn->name); |
| 3857 | return 0; |
| 3858 | } |
| 3859 | hlua_arg2lua(session->hlua.T, arg_p); |
| 3860 | session->hlua.nargs++; |
| 3861 | } |
| 3862 | } |
| 3863 | |
Thierry FOURNIER | bd41349 | 2015-03-03 16:52:26 +0100 | [diff] [blame] | 3864 | /* We must initialize the execution timeouts. */ |
| 3865 | session->hlua.expire = tick_add(now_ms, hlua_timeout_session); |
| 3866 | |
Thierry FOURNIER | 9be813f | 2015-02-16 20:21:12 +0100 | [diff] [blame] | 3867 | /* Set the currently running flag. */ |
Thierry FOURNIER | a097fdf | 2015-03-03 15:17:35 +0100 | [diff] [blame] | 3868 | HLUA_SET_RUN(&session->hlua); |
Thierry FOURNIER | 9be813f | 2015-02-16 20:21:12 +0100 | [diff] [blame] | 3869 | } |
| 3870 | |
| 3871 | /* Execute the function. */ |
| 3872 | switch (hlua_ctx_resume(&session->hlua, 0)) { |
| 3873 | /* finished. */ |
| 3874 | case HLUA_E_OK: |
| 3875 | /* Convert the returned value in sample. */ |
| 3876 | hlua_lua2smp(session->hlua.T, -1, smp); |
| 3877 | lua_pop(session->hlua.T, 1); |
| 3878 | return 1; |
| 3879 | |
| 3880 | /* yield. */ |
| 3881 | case HLUA_E_AGAIN: |
| 3882 | send_log(session->be, LOG_ERR, "Lua converter '%s': cannot use yielded functions.", fcn->name); |
| 3883 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 3884 | Alert("Lua converter '%s': cannot use yielded functions.\n", fcn->name); |
| 3885 | return 0; |
| 3886 | |
| 3887 | /* finished with error. */ |
| 3888 | case HLUA_E_ERRMSG: |
| 3889 | /* Display log. */ |
| 3890 | send_log(session->be, LOG_ERR, "Lua converter '%s': %s.", fcn->name, lua_tostring(session->hlua.T, -1)); |
| 3891 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 3892 | Alert("Lua converter '%s': %s.\n", fcn->name, lua_tostring(session->hlua.T, -1)); |
| 3893 | lua_pop(session->hlua.T, 1); |
| 3894 | return 0; |
| 3895 | |
| 3896 | case HLUA_E_ERR: |
| 3897 | /* Display log. */ |
| 3898 | send_log(session->be, LOG_ERR, "Lua converter '%s' returns an unknown error.", fcn->name); |
| 3899 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 3900 | Alert("Lua converter '%s' returns an unknown error.\n", fcn->name); |
| 3901 | |
| 3902 | default: |
| 3903 | return 0; |
| 3904 | } |
| 3905 | } |
| 3906 | |
Thierry FOURNIER | fa0e5dd | 2015-02-16 20:19:18 +0100 | [diff] [blame] | 3907 | /* Wrapper called by HAProxy to execute a sample-fetch. this wrapper |
| 3908 | * doesn't allow "yield" functions because the HAProxy engine cannot |
| 3909 | * resume sample-fetches. |
| 3910 | */ |
| 3911 | static int hlua_sample_fetch_wrapper(struct proxy *px, struct session *s, void *l7, |
| 3912 | unsigned int opt, const struct arg *arg_p, |
| 3913 | struct sample *smp, const char *kw, void *private) |
| 3914 | { |
| 3915 | struct hlua_function *fcn = (struct hlua_function *)private; |
| 3916 | |
Thierry FOURNIER | 05ac424 | 2015-02-27 18:37:27 +0100 | [diff] [blame] | 3917 | /* In the execution wrappers linked with a session, the |
| 3918 | * Lua context can be not initialized. This behavior |
| 3919 | * permits to save performances because a systematic |
| 3920 | * Lua initialization cause 5% performances loss. |
| 3921 | */ |
| 3922 | if (!s->hlua.T && !hlua_ctx_init(&s->hlua, s->task)) { |
| 3923 | send_log(s->be, LOG_ERR, "Lua sample-fetch '%s': can't initialize Lua context.", fcn->name); |
| 3924 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 3925 | Alert("Lua sample-fetch '%s': can't initialize Lua context.\n", fcn->name); |
| 3926 | return 0; |
| 3927 | } |
| 3928 | |
Thierry FOURNIER | fa0e5dd | 2015-02-16 20:19:18 +0100 | [diff] [blame] | 3929 | /* If it is the first run, initialize the data for the call. */ |
Thierry FOURNIER | a097fdf | 2015-03-03 15:17:35 +0100 | [diff] [blame] | 3930 | if (!HLUA_IS_RUNNING(&s->hlua)) { |
Thierry FOURNIER | fa0e5dd | 2015-02-16 20:19:18 +0100 | [diff] [blame] | 3931 | /* Check stack available size. */ |
| 3932 | if (!lua_checkstack(s->hlua.T, 2)) { |
| 3933 | send_log(px, LOG_ERR, "Lua sample-fetch '%s': full stack.", fcn->name); |
| 3934 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 3935 | Alert("Lua sample-fetch '%s': full stack.\n", fcn->name); |
| 3936 | return 0; |
| 3937 | } |
| 3938 | |
| 3939 | /* Restore the function in the stack. */ |
| 3940 | lua_rawgeti(s->hlua.T, LUA_REGISTRYINDEX, fcn->function_ref); |
| 3941 | |
| 3942 | /* push arguments in the stack. */ |
| 3943 | if (!hlua_txn_new(s->hlua.T, s, px, l7)) { |
| 3944 | send_log(px, LOG_ERR, "Lua sample-fetch '%s': full stack.", fcn->name); |
| 3945 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 3946 | Alert("Lua sample-fetch '%s': full stack.\n", fcn->name); |
| 3947 | return 0; |
| 3948 | } |
| 3949 | s->hlua.nargs = 1; |
| 3950 | |
| 3951 | /* push keywords in the stack. */ |
| 3952 | for (; arg_p && arg_p->type != ARGT_STOP; arg_p++) { |
| 3953 | /* Check stack available size. */ |
| 3954 | if (!lua_checkstack(s->hlua.T, 1)) { |
| 3955 | send_log(px, LOG_ERR, "Lua sample-fetch '%s': full stack.", fcn->name); |
| 3956 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 3957 | Alert("Lua sample-fetch '%s': full stack.\n", fcn->name); |
| 3958 | return 0; |
| 3959 | } |
| 3960 | if (!lua_checkstack(s->hlua.T, 1)) { |
| 3961 | send_log(px, LOG_ERR, "Lua sample-fetch '%s': full stack.", fcn->name); |
| 3962 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 3963 | Alert("Lua sample-fetch '%s': full stack.\n", fcn->name); |
| 3964 | return 0; |
| 3965 | } |
| 3966 | hlua_arg2lua(s->hlua.T, arg_p); |
| 3967 | s->hlua.nargs++; |
| 3968 | } |
| 3969 | |
Thierry FOURNIER | bd41349 | 2015-03-03 16:52:26 +0100 | [diff] [blame] | 3970 | /* We must initialize the execution timeouts. */ |
| 3971 | s->hlua.expire = tick_add(now_ms, hlua_timeout_session); |
| 3972 | |
Thierry FOURNIER | fa0e5dd | 2015-02-16 20:19:18 +0100 | [diff] [blame] | 3973 | /* Set the currently running flag. */ |
Thierry FOURNIER | a097fdf | 2015-03-03 15:17:35 +0100 | [diff] [blame] | 3974 | HLUA_SET_RUN(&s->hlua); |
Thierry FOURNIER | fa0e5dd | 2015-02-16 20:19:18 +0100 | [diff] [blame] | 3975 | } |
| 3976 | |
| 3977 | /* Execute the function. */ |
| 3978 | switch (hlua_ctx_resume(&s->hlua, 0)) { |
| 3979 | /* finished. */ |
| 3980 | case HLUA_E_OK: |
| 3981 | /* Convert the returned value in sample. */ |
| 3982 | hlua_lua2smp(s->hlua.T, -1, smp); |
| 3983 | lua_pop(s->hlua.T, 1); |
| 3984 | |
| 3985 | /* Set the end of execution flag. */ |
| 3986 | smp->flags &= ~SMP_F_MAY_CHANGE; |
| 3987 | return 1; |
| 3988 | |
| 3989 | /* yield. */ |
| 3990 | case HLUA_E_AGAIN: |
| 3991 | send_log(px, LOG_ERR, "Lua sample-fetch '%s': cannot use yielded functions.", fcn->name); |
| 3992 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 3993 | Alert("Lua sample-fetch '%s': cannot use yielded functions.\n", fcn->name); |
| 3994 | return 0; |
| 3995 | |
| 3996 | /* finished with error. */ |
| 3997 | case HLUA_E_ERRMSG: |
| 3998 | /* Display log. */ |
| 3999 | send_log(px, LOG_ERR, "Lua sample-fetch '%s': %s.", fcn->name, lua_tostring(s->hlua.T, -1)); |
| 4000 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 4001 | Alert("Lua sample-fetch '%s': %s.\n", fcn->name, lua_tostring(s->hlua.T, -1)); |
| 4002 | lua_pop(s->hlua.T, 1); |
| 4003 | return 0; |
| 4004 | |
| 4005 | case HLUA_E_ERR: |
| 4006 | /* Display log. */ |
| 4007 | send_log(px, LOG_ERR, "Lua sample-fetch '%s' returns an unknown error.", fcn->name); |
| 4008 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 4009 | Alert("Lua sample-fetch '%s': returns an unknown error.\n", fcn->name); |
| 4010 | |
| 4011 | default: |
| 4012 | return 0; |
| 4013 | } |
| 4014 | } |
| 4015 | |
Thierry FOURNIER | 9be813f | 2015-02-16 20:21:12 +0100 | [diff] [blame] | 4016 | /* This function is an LUA binding used for registering |
| 4017 | * "sample-conv" functions. It expects a converter name used |
| 4018 | * in the haproxy configuration file, and an LUA function. |
| 4019 | */ |
| 4020 | __LJMP static int hlua_register_converters(lua_State *L) |
| 4021 | { |
| 4022 | struct sample_conv_kw_list *sck; |
| 4023 | const char *name; |
| 4024 | int ref; |
| 4025 | int len; |
| 4026 | struct hlua_function *fcn; |
| 4027 | |
| 4028 | MAY_LJMP(check_args(L, 2, "register_converters")); |
| 4029 | |
| 4030 | /* First argument : converter name. */ |
| 4031 | name = MAY_LJMP(luaL_checkstring(L, 1)); |
| 4032 | |
| 4033 | /* Second argument : lua function. */ |
| 4034 | ref = MAY_LJMP(hlua_checkfunction(L, 2)); |
| 4035 | |
| 4036 | /* Allocate and fill the sample fetch keyword struct. */ |
| 4037 | sck = malloc(sizeof(struct sample_conv_kw_list) + |
| 4038 | sizeof(struct sample_conv) * 2); |
| 4039 | if (!sck) |
| 4040 | WILL_LJMP(luaL_error(L, "lua out of memory error.")); |
| 4041 | fcn = malloc(sizeof(*fcn)); |
| 4042 | if (!fcn) |
| 4043 | WILL_LJMP(luaL_error(L, "lua out of memory error.")); |
| 4044 | |
| 4045 | /* Fill fcn. */ |
| 4046 | fcn->name = strdup(name); |
| 4047 | if (!fcn->name) |
| 4048 | WILL_LJMP(luaL_error(L, "lua out of memory error.")); |
| 4049 | fcn->function_ref = ref; |
| 4050 | |
| 4051 | /* List head */ |
| 4052 | sck->list.n = sck->list.p = NULL; |
| 4053 | |
| 4054 | /* converter keyword. */ |
| 4055 | len = strlen("lua.") + strlen(name) + 1; |
| 4056 | sck->kw[0].kw = malloc(len); |
| 4057 | if (!sck->kw[0].kw) |
| 4058 | WILL_LJMP(luaL_error(L, "lua out of memory error.")); |
| 4059 | |
| 4060 | snprintf((char *)sck->kw[0].kw, len, "lua.%s", name); |
| 4061 | sck->kw[0].process = hlua_sample_conv_wrapper; |
| 4062 | sck->kw[0].arg_mask = ARG5(0,STR,STR,STR,STR,STR); |
| 4063 | sck->kw[0].val_args = NULL; |
| 4064 | sck->kw[0].in_type = SMP_T_STR; |
| 4065 | sck->kw[0].out_type = SMP_T_STR; |
| 4066 | sck->kw[0].private = fcn; |
| 4067 | |
| 4068 | /* End of array. */ |
| 4069 | memset(&sck->kw[1], 0, sizeof(struct sample_conv)); |
| 4070 | |
| 4071 | /* Register this new converter */ |
| 4072 | sample_register_convs(sck); |
| 4073 | |
| 4074 | return 0; |
| 4075 | } |
| 4076 | |
Thierry FOURNIER | fa0e5dd | 2015-02-16 20:19:18 +0100 | [diff] [blame] | 4077 | /* This fucntion is an LUA binding used for registering |
| 4078 | * "sample-fetch" functions. It expects a converter name used |
| 4079 | * in the haproxy configuration file, and an LUA function. |
| 4080 | */ |
| 4081 | __LJMP static int hlua_register_fetches(lua_State *L) |
| 4082 | { |
| 4083 | const char *name; |
| 4084 | int ref; |
| 4085 | int len; |
| 4086 | struct sample_fetch_kw_list *sfk; |
| 4087 | struct hlua_function *fcn; |
| 4088 | |
| 4089 | MAY_LJMP(check_args(L, 2, "register_fetches")); |
| 4090 | |
| 4091 | /* First argument : sample-fetch name. */ |
| 4092 | name = MAY_LJMP(luaL_checkstring(L, 1)); |
| 4093 | |
| 4094 | /* Second argument : lua function. */ |
| 4095 | ref = MAY_LJMP(hlua_checkfunction(L, 2)); |
| 4096 | |
| 4097 | /* Allocate and fill the sample fetch keyword struct. */ |
| 4098 | sfk = malloc(sizeof(struct sample_fetch_kw_list) + |
| 4099 | sizeof(struct sample_fetch) * 2); |
| 4100 | if (!sfk) |
| 4101 | WILL_LJMP(luaL_error(L, "lua out of memory error.")); |
| 4102 | fcn = malloc(sizeof(*fcn)); |
| 4103 | if (!fcn) |
| 4104 | WILL_LJMP(luaL_error(L, "lua out of memory error.")); |
| 4105 | |
| 4106 | /* Fill fcn. */ |
| 4107 | fcn->name = strdup(name); |
| 4108 | if (!fcn->name) |
| 4109 | WILL_LJMP(luaL_error(L, "lua out of memory error.")); |
| 4110 | fcn->function_ref = ref; |
| 4111 | |
| 4112 | /* List head */ |
| 4113 | sfk->list.n = sfk->list.p = NULL; |
| 4114 | |
| 4115 | /* sample-fetch keyword. */ |
| 4116 | len = strlen("lua.") + strlen(name) + 1; |
| 4117 | sfk->kw[0].kw = malloc(len); |
| 4118 | if (!sfk->kw[0].kw) |
| 4119 | return luaL_error(L, "lua out of memory error."); |
| 4120 | |
| 4121 | snprintf((char *)sfk->kw[0].kw, len, "lua.%s", name); |
| 4122 | sfk->kw[0].process = hlua_sample_fetch_wrapper; |
| 4123 | sfk->kw[0].arg_mask = ARG5(0,STR,STR,STR,STR,STR); |
| 4124 | sfk->kw[0].val_args = NULL; |
| 4125 | sfk->kw[0].out_type = SMP_T_STR; |
| 4126 | sfk->kw[0].use = SMP_USE_HTTP_ANY; |
| 4127 | sfk->kw[0].val = 0; |
| 4128 | sfk->kw[0].private = fcn; |
| 4129 | |
| 4130 | /* End of array. */ |
| 4131 | memset(&sfk->kw[1], 0, sizeof(struct sample_fetch)); |
| 4132 | |
| 4133 | /* Register this new fetch. */ |
| 4134 | sample_register_fetches(sfk); |
| 4135 | |
| 4136 | return 0; |
| 4137 | } |
| 4138 | |
Thierry FOURNIER | 258d8aa | 2015-02-16 20:23:40 +0100 | [diff] [blame] | 4139 | /* global {tcp|http}-request parser. Return 1 in succes case, else return 0. */ |
| 4140 | static int hlua_parse_rule(const char **args, int *cur_arg, struct proxy *px, |
| 4141 | struct hlua_rule **rule_p, char **err) |
| 4142 | { |
| 4143 | struct hlua_rule *rule; |
| 4144 | |
| 4145 | /* Memory for the rule. */ |
| 4146 | rule = malloc(sizeof(*rule)); |
| 4147 | if (!rule) { |
| 4148 | memprintf(err, "out of memory error"); |
| 4149 | return 0; |
| 4150 | } |
| 4151 | *rule_p = rule; |
| 4152 | |
| 4153 | /* The requiered arg is a function name. */ |
| 4154 | if (!args[*cur_arg]) { |
| 4155 | memprintf(err, "expect Lua function name"); |
| 4156 | return 0; |
| 4157 | } |
| 4158 | |
| 4159 | /* Lookup for the symbol, and check if it is a function. */ |
| 4160 | lua_getglobal(gL.T, args[*cur_arg]); |
| 4161 | if (lua_isnil(gL.T, -1)) { |
| 4162 | lua_pop(gL.T, 1); |
| 4163 | memprintf(err, "Lua function '%s' not found", args[*cur_arg]); |
| 4164 | return 0; |
| 4165 | } |
| 4166 | if (!lua_isfunction(gL.T, -1)) { |
| 4167 | lua_pop(gL.T, 1); |
| 4168 | memprintf(err, "'%s' is not a function", args[*cur_arg]); |
| 4169 | return 0; |
| 4170 | } |
| 4171 | |
| 4172 | /* Reference the Lua function and store the reference. */ |
| 4173 | rule->fcn.function_ref = luaL_ref(gL.T, LUA_REGISTRYINDEX); |
| 4174 | rule->fcn.name = strdup(args[*cur_arg]); |
| 4175 | if (!rule->fcn.name) { |
| 4176 | memprintf(err, "out of memory error."); |
| 4177 | return 0; |
| 4178 | } |
| 4179 | (*cur_arg)++; |
| 4180 | |
| 4181 | /* TODO: later accept arguments. */ |
| 4182 | rule->args = NULL; |
| 4183 | |
| 4184 | return 1; |
| 4185 | } |
| 4186 | |
| 4187 | /* This function is a wrapper to execute each LUA function declared |
| 4188 | * as an action wrapper during the initialisation period. This function |
| 4189 | * return 1 if the processing is finished (with oe without error) and |
| 4190 | * return 0 if the function must be called again because the LUA |
| 4191 | * returns a yield. |
| 4192 | */ |
| 4193 | static int hlua_request_act_wrapper(struct hlua_rule *rule, struct proxy *px, |
| 4194 | struct session *s, struct http_txn *http_txn, |
| 4195 | unsigned int analyzer) |
| 4196 | { |
| 4197 | char **arg; |
| 4198 | |
Thierry FOURNIER | 05ac424 | 2015-02-27 18:37:27 +0100 | [diff] [blame] | 4199 | /* In the execution wrappers linked with a session, the |
| 4200 | * Lua context can be not initialized. This behavior |
| 4201 | * permits to save performances because a systematic |
| 4202 | * Lua initialization cause 5% performances loss. |
| 4203 | */ |
| 4204 | if (!s->hlua.T && !hlua_ctx_init(&s->hlua, s->task)) { |
| 4205 | send_log(px, LOG_ERR, "Lua action '%s': can't initialize Lua context.", rule->fcn.name); |
| 4206 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 4207 | Alert("Lua action '%s': can't initialize Lua context.\n", rule->fcn.name); |
| 4208 | return 0; |
| 4209 | } |
| 4210 | |
Thierry FOURNIER | 258d8aa | 2015-02-16 20:23:40 +0100 | [diff] [blame] | 4211 | /* If it is the first run, initialize the data for the call. */ |
Thierry FOURNIER | a097fdf | 2015-03-03 15:17:35 +0100 | [diff] [blame] | 4212 | if (!HLUA_IS_RUNNING(&s->hlua)) { |
Thierry FOURNIER | 258d8aa | 2015-02-16 20:23:40 +0100 | [diff] [blame] | 4213 | /* Check stack available size. */ |
| 4214 | if (!lua_checkstack(s->hlua.T, 1)) { |
| 4215 | send_log(px, LOG_ERR, "Lua function '%s': full stack.", rule->fcn.name); |
| 4216 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 4217 | Alert("Lua function '%s': full stack.\n", rule->fcn.name); |
| 4218 | return 0; |
| 4219 | } |
| 4220 | |
| 4221 | /* Restore the function in the stack. */ |
| 4222 | lua_rawgeti(s->hlua.T, LUA_REGISTRYINDEX, rule->fcn.function_ref); |
| 4223 | |
| 4224 | /* Create and and push object session in the stack. */ |
| 4225 | if (!hlua_txn_new(s->hlua.T, s, px, http_txn)) { |
| 4226 | send_log(px, LOG_ERR, "Lua function '%s': full stack.", rule->fcn.name); |
| 4227 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 4228 | Alert("Lua function '%s': full stack.\n", rule->fcn.name); |
| 4229 | return 0; |
| 4230 | } |
| 4231 | s->hlua.nargs = 1; |
| 4232 | |
| 4233 | /* push keywords in the stack. */ |
| 4234 | for (arg = rule->args; arg && *arg; arg++) { |
| 4235 | if (!lua_checkstack(s->hlua.T, 1)) { |
| 4236 | send_log(px, LOG_ERR, "Lua function '%s': full stack.", rule->fcn.name); |
| 4237 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 4238 | Alert("Lua function '%s': full stack.\n", rule->fcn.name); |
| 4239 | return 0; |
| 4240 | } |
| 4241 | lua_pushstring(s->hlua.T, *arg); |
| 4242 | s->hlua.nargs++; |
| 4243 | } |
| 4244 | |
Thierry FOURNIER | bd41349 | 2015-03-03 16:52:26 +0100 | [diff] [blame] | 4245 | /* We must initialize the execution timeouts. */ |
| 4246 | s->hlua.expire = tick_add(now_ms, hlua_timeout_session); |
| 4247 | |
Thierry FOURNIER | 258d8aa | 2015-02-16 20:23:40 +0100 | [diff] [blame] | 4248 | /* Set the currently running flag. */ |
Thierry FOURNIER | a097fdf | 2015-03-03 15:17:35 +0100 | [diff] [blame] | 4249 | HLUA_SET_RUN(&s->hlua); |
Thierry FOURNIER | 258d8aa | 2015-02-16 20:23:40 +0100 | [diff] [blame] | 4250 | } |
| 4251 | |
| 4252 | /* Execute the function. */ |
| 4253 | switch (hlua_ctx_resume(&s->hlua, 1)) { |
| 4254 | /* finished. */ |
| 4255 | case HLUA_E_OK: |
| 4256 | return 1; |
| 4257 | |
| 4258 | /* yield. */ |
| 4259 | case HLUA_E_AGAIN: |
Thierry FOURNIER | c42c1ae | 2015-03-03 17:17:55 +0100 | [diff] [blame] | 4260 | /* Set timeout in the required channel. */ |
| 4261 | if (s->hlua.wake_time != TICK_ETERNITY) { |
| 4262 | if (analyzer & (AN_REQ_INSPECT_FE|AN_REQ_HTTP_PROCESS_FE)) |
Willy Tarreau | 22ec1ea | 2014-11-27 20:45:39 +0100 | [diff] [blame] | 4263 | s->req.analyse_exp = s->hlua.wake_time; |
Thierry FOURNIER | c42c1ae | 2015-03-03 17:17:55 +0100 | [diff] [blame] | 4264 | else if (analyzer & (AN_RES_INSPECT|AN_RES_HTTP_PROCESS_BE)) |
Willy Tarreau | 22ec1ea | 2014-11-27 20:45:39 +0100 | [diff] [blame] | 4265 | s->res.analyse_exp = s->hlua.wake_time; |
Thierry FOURNIER | c42c1ae | 2015-03-03 17:17:55 +0100 | [diff] [blame] | 4266 | } |
Thierry FOURNIER | 258d8aa | 2015-02-16 20:23:40 +0100 | [diff] [blame] | 4267 | /* Some actions can be wake up when a "write" event |
| 4268 | * is detected on a response channel. This is useful |
| 4269 | * only for actions targetted on the requests. |
| 4270 | */ |
Thierry FOURNIER | ef6a211 | 2015-03-05 17:45:34 +0100 | [diff] [blame] | 4271 | if (HLUA_IS_WAKERESWR(&s->hlua)) { |
Willy Tarreau | 22ec1ea | 2014-11-27 20:45:39 +0100 | [diff] [blame] | 4272 | s->res.flags |= CF_WAKE_WRITE; |
Willy Tarreau | 76bd97f | 2015-03-10 17:16:10 +0100 | [diff] [blame] | 4273 | if ((analyzer & (AN_REQ_INSPECT_FE|AN_REQ_HTTP_PROCESS_FE))) |
Willy Tarreau | 22ec1ea | 2014-11-27 20:45:39 +0100 | [diff] [blame] | 4274 | s->res.analysers |= analyzer; |
Thierry FOURNIER | 258d8aa | 2015-02-16 20:23:40 +0100 | [diff] [blame] | 4275 | } |
Thierry FOURNIER | 53e08ec | 2015-03-06 00:35:53 +0100 | [diff] [blame] | 4276 | if (HLUA_IS_WAKEREQWR(&s->hlua)) |
Willy Tarreau | 22ec1ea | 2014-11-27 20:45:39 +0100 | [diff] [blame] | 4277 | s->req.flags |= CF_WAKE_WRITE; |
Thierry FOURNIER | 258d8aa | 2015-02-16 20:23:40 +0100 | [diff] [blame] | 4278 | return 0; |
| 4279 | |
| 4280 | /* finished with error. */ |
| 4281 | case HLUA_E_ERRMSG: |
| 4282 | /* Display log. */ |
| 4283 | send_log(px, LOG_ERR, "Lua function '%s': %s.", rule->fcn.name, lua_tostring(s->hlua.T, -1)); |
| 4284 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 4285 | Alert("Lua function '%s': %s.\n", rule->fcn.name, lua_tostring(s->hlua.T, -1)); |
| 4286 | lua_pop(s->hlua.T, 1); |
| 4287 | return 1; |
| 4288 | |
| 4289 | case HLUA_E_ERR: |
| 4290 | /* Display log. */ |
| 4291 | send_log(px, LOG_ERR, "Lua function '%s' return an unknown error.", rule->fcn.name); |
| 4292 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 4293 | Alert("Lua function '%s' return an unknown error.\n", rule->fcn.name); |
| 4294 | |
| 4295 | default: |
| 4296 | return 1; |
| 4297 | } |
| 4298 | } |
| 4299 | |
| 4300 | /* Lua execution wrapper for "tcp-request". This function uses |
| 4301 | * "hlua_request_act_wrapper" for executing the LUA code. |
| 4302 | */ |
| 4303 | int hlua_tcp_req_act_wrapper(struct tcp_rule *tcp_rule, struct proxy *px, |
| 4304 | struct session *s) |
| 4305 | { |
| 4306 | return hlua_request_act_wrapper((struct hlua_rule *)tcp_rule->act_prm.data, |
| 4307 | px, s, NULL, AN_REQ_INSPECT_FE); |
| 4308 | } |
| 4309 | |
| 4310 | /* Lua execution wrapper for "tcp-response". This function uses |
| 4311 | * "hlua_request_act_wrapper" for executing the LUA code. |
| 4312 | */ |
| 4313 | int hlua_tcp_res_act_wrapper(struct tcp_rule *tcp_rule, struct proxy *px, |
| 4314 | struct session *s) |
| 4315 | { |
| 4316 | return hlua_request_act_wrapper((struct hlua_rule *)tcp_rule->act_prm.data, |
| 4317 | px, s, NULL, AN_RES_INSPECT); |
| 4318 | } |
| 4319 | |
| 4320 | /* Lua execution wrapper for http-request. |
| 4321 | * This function uses "hlua_request_act_wrapper" for executing |
| 4322 | * the LUA code. |
| 4323 | */ |
| 4324 | int hlua_http_req_act_wrapper(struct http_req_rule *rule, struct proxy *px, |
| 4325 | struct session *s, struct http_txn *http_txn) |
| 4326 | { |
| 4327 | return hlua_request_act_wrapper((struct hlua_rule *)rule->arg.data, px, |
| 4328 | s, http_txn, AN_REQ_HTTP_PROCESS_FE); |
| 4329 | } |
| 4330 | |
| 4331 | /* Lua execution wrapper for http-response. |
| 4332 | * This function uses "hlua_request_act_wrapper" for executing |
| 4333 | * the LUA code. |
| 4334 | */ |
| 4335 | int hlua_http_res_act_wrapper(struct http_res_rule *rule, struct proxy *px, |
| 4336 | struct session *s, struct http_txn *http_txn) |
| 4337 | { |
| 4338 | return hlua_request_act_wrapper((struct hlua_rule *)rule->arg.data, px, |
| 4339 | s, http_txn, AN_RES_HTTP_PROCESS_BE); |
| 4340 | } |
| 4341 | |
| 4342 | /* tcp-request <*> configuration wrapper. */ |
| 4343 | static int tcp_req_action_register_lua(const char **args, int *cur_arg, struct proxy *px, |
| 4344 | struct tcp_rule *rule, char **err) |
| 4345 | { |
| 4346 | if (!hlua_parse_rule(args, cur_arg, px, (struct hlua_rule **)&rule->act_prm.data, err)) |
Thierry FOURNIER | 893bfa3 | 2015-02-17 18:42:34 +0100 | [diff] [blame] | 4347 | return 0; |
Thierry FOURNIER | 258d8aa | 2015-02-16 20:23:40 +0100 | [diff] [blame] | 4348 | rule->action = TCP_ACT_CUSTOM; |
| 4349 | rule->action_ptr = hlua_tcp_req_act_wrapper; |
| 4350 | return 1; |
| 4351 | } |
| 4352 | |
| 4353 | /* tcp-response <*> configuration wrapper. */ |
| 4354 | static int tcp_res_action_register_lua(const char **args, int *cur_arg, struct proxy *px, |
| 4355 | struct tcp_rule *rule, char **err) |
| 4356 | { |
| 4357 | if (!hlua_parse_rule(args, cur_arg, px, (struct hlua_rule **)&rule->act_prm.data, err)) |
Thierry FOURNIER | 893bfa3 | 2015-02-17 18:42:34 +0100 | [diff] [blame] | 4358 | return 0; |
Thierry FOURNIER | 258d8aa | 2015-02-16 20:23:40 +0100 | [diff] [blame] | 4359 | rule->action = TCP_ACT_CUSTOM; |
| 4360 | rule->action_ptr = hlua_tcp_res_act_wrapper; |
| 4361 | return 1; |
| 4362 | } |
| 4363 | |
| 4364 | /* http-request <*> configuration wrapper. */ |
| 4365 | static int http_req_action_register_lua(const char **args, int *cur_arg, struct proxy *px, |
| 4366 | struct http_req_rule *rule, char **err) |
| 4367 | { |
| 4368 | if (!hlua_parse_rule(args, cur_arg, px, (struct hlua_rule **)&rule->arg.data, err)) |
| 4369 | return -1; |
| 4370 | rule->action = HTTP_REQ_ACT_CUSTOM_CONT; |
| 4371 | rule->action_ptr = hlua_http_req_act_wrapper; |
| 4372 | return 1; |
| 4373 | } |
| 4374 | |
| 4375 | /* http-response <*> configuration wrapper. */ |
| 4376 | static int http_res_action_register_lua(const char **args, int *cur_arg, struct proxy *px, |
| 4377 | struct http_res_rule *rule, char **err) |
| 4378 | { |
| 4379 | if (!hlua_parse_rule(args, cur_arg, px, (struct hlua_rule **)&rule->arg.data, err)) |
| 4380 | return -1; |
| 4381 | rule->action = HTTP_RES_ACT_CUSTOM_CONT; |
| 4382 | rule->action_ptr = hlua_http_res_act_wrapper; |
| 4383 | return 1; |
| 4384 | } |
| 4385 | |
Thierry FOURNIER | bd41349 | 2015-03-03 16:52:26 +0100 | [diff] [blame] | 4386 | static int hlua_read_timeout(char **args, int section_type, struct proxy *curpx, |
| 4387 | struct proxy *defpx, const char *file, int line, |
| 4388 | char **err, unsigned int *timeout) |
| 4389 | { |
| 4390 | const char *error; |
| 4391 | |
| 4392 | error = parse_time_err(args[1], timeout, TIME_UNIT_MS); |
| 4393 | if (error && *error != '\0') { |
| 4394 | memprintf(err, "%s: invalid timeout", args[0]); |
| 4395 | return -1; |
| 4396 | } |
| 4397 | return 0; |
| 4398 | } |
| 4399 | |
| 4400 | static int hlua_session_timeout(char **args, int section_type, struct proxy *curpx, |
| 4401 | struct proxy *defpx, const char *file, int line, |
| 4402 | char **err) |
| 4403 | { |
| 4404 | return hlua_read_timeout(args, section_type, curpx, defpx, |
| 4405 | file, line, err, &hlua_timeout_session); |
| 4406 | } |
| 4407 | |
| 4408 | static int hlua_task_timeout(char **args, int section_type, struct proxy *curpx, |
| 4409 | struct proxy *defpx, const char *file, int line, |
| 4410 | char **err) |
| 4411 | { |
| 4412 | return hlua_read_timeout(args, section_type, curpx, defpx, |
| 4413 | file, line, err, &hlua_timeout_task); |
| 4414 | } |
| 4415 | |
Thierry FOURNIER | ee9f802 | 2015-03-03 17:37:37 +0100 | [diff] [blame] | 4416 | static int hlua_forced_yield(char **args, int section_type, struct proxy *curpx, |
| 4417 | struct proxy *defpx, const char *file, int line, |
| 4418 | char **err) |
| 4419 | { |
| 4420 | char *error; |
| 4421 | |
| 4422 | hlua_nb_instruction = strtoll(args[1], &error, 10); |
| 4423 | if (*error != '\0') { |
| 4424 | memprintf(err, "%s: invalid number", args[0]); |
| 4425 | return -1; |
| 4426 | } |
| 4427 | return 0; |
| 4428 | } |
| 4429 | |
Willy Tarreau | 32f61e2 | 2015-03-18 17:54:59 +0100 | [diff] [blame] | 4430 | static int hlua_parse_maxmem(char **args, int section_type, struct proxy *curpx, |
| 4431 | struct proxy *defpx, const char *file, int line, |
| 4432 | char **err) |
| 4433 | { |
| 4434 | char *error; |
| 4435 | |
| 4436 | if (*(args[1]) == 0) { |
| 4437 | memprintf(err, "'%s' expects an integer argument (Lua memory size in MB).\n", args[0]); |
| 4438 | return -1; |
| 4439 | } |
| 4440 | hlua_global_allocator.limit = strtoll(args[1], &error, 10) * 1024L * 1024L; |
| 4441 | if (*error != '\0') { |
| 4442 | memprintf(err, "%s: invalid number %s (error at '%c')", args[0], args[1], *error); |
| 4443 | return -1; |
| 4444 | } |
| 4445 | return 0; |
| 4446 | } |
| 4447 | |
| 4448 | |
Thierry FOURNIER | 6c9b52c | 2015-01-23 15:57:06 +0100 | [diff] [blame] | 4449 | /* This function is called by the main configuration key "lua-load". It loads and |
| 4450 | * execute an lua file during the parsing of the HAProxy configuration file. It is |
| 4451 | * the main lua entry point. |
| 4452 | * |
| 4453 | * This funtion runs with the HAProxy keywords API. It returns -1 if an error is |
| 4454 | * occured, otherwise it returns 0. |
| 4455 | * |
| 4456 | * In some error case, LUA set an error message in top of the stack. This function |
| 4457 | * returns this error message in the HAProxy logs and pop it from the stack. |
| 4458 | */ |
| 4459 | static int hlua_load(char **args, int section_type, struct proxy *curpx, |
| 4460 | struct proxy *defpx, const char *file, int line, |
| 4461 | char **err) |
| 4462 | { |
| 4463 | int error; |
| 4464 | |
| 4465 | /* Just load and compile the file. */ |
| 4466 | error = luaL_loadfile(gL.T, args[1]); |
| 4467 | if (error) { |
| 4468 | memprintf(err, "error in lua file '%s': %s", args[1], lua_tostring(gL.T, -1)); |
| 4469 | lua_pop(gL.T, 1); |
| 4470 | return -1; |
| 4471 | } |
| 4472 | |
| 4473 | /* If no syntax error where detected, execute the code. */ |
| 4474 | error = lua_pcall(gL.T, 0, LUA_MULTRET, 0); |
| 4475 | switch (error) { |
| 4476 | case LUA_OK: |
| 4477 | break; |
| 4478 | case LUA_ERRRUN: |
| 4479 | memprintf(err, "lua runtime error: %s\n", lua_tostring(gL.T, -1)); |
| 4480 | lua_pop(gL.T, 1); |
| 4481 | return -1; |
| 4482 | case LUA_ERRMEM: |
| 4483 | memprintf(err, "lua out of memory error\n"); |
| 4484 | return -1; |
| 4485 | case LUA_ERRERR: |
| 4486 | memprintf(err, "lua message handler error: %s\n", lua_tostring(gL.T, -1)); |
| 4487 | lua_pop(gL.T, 1); |
| 4488 | return -1; |
| 4489 | case LUA_ERRGCMM: |
| 4490 | memprintf(err, "lua garbage collector error: %s\n", lua_tostring(gL.T, -1)); |
| 4491 | lua_pop(gL.T, 1); |
| 4492 | return -1; |
| 4493 | default: |
| 4494 | memprintf(err, "lua unknonwn error: %s\n", lua_tostring(gL.T, -1)); |
| 4495 | lua_pop(gL.T, 1); |
| 4496 | return -1; |
| 4497 | } |
| 4498 | |
| 4499 | return 0; |
| 4500 | } |
| 4501 | |
| 4502 | /* configuration keywords declaration */ |
| 4503 | static struct cfg_kw_list cfg_kws = {{ },{ |
Thierry FOURNIER | bd41349 | 2015-03-03 16:52:26 +0100 | [diff] [blame] | 4504 | { CFG_GLOBAL, "lua-load", hlua_load }, |
| 4505 | { CFG_GLOBAL, "tune.lua.session-timeout", hlua_session_timeout }, |
| 4506 | { CFG_GLOBAL, "tune.lua.task-timeout", hlua_task_timeout }, |
Thierry FOURNIER | ee9f802 | 2015-03-03 17:37:37 +0100 | [diff] [blame] | 4507 | { CFG_GLOBAL, "tune.lua.forced-yield", hlua_forced_yield }, |
Willy Tarreau | 32f61e2 | 2015-03-18 17:54:59 +0100 | [diff] [blame] | 4508 | { CFG_GLOBAL, "tune.lua.maxmem", hlua_parse_maxmem }, |
Thierry FOURNIER | 6c9b52c | 2015-01-23 15:57:06 +0100 | [diff] [blame] | 4509 | { 0, NULL, NULL }, |
| 4510 | }}; |
| 4511 | |
Thierry FOURNIER | 258d8aa | 2015-02-16 20:23:40 +0100 | [diff] [blame] | 4512 | static struct http_req_action_kw_list http_req_kws = {"lua", { }, { |
| 4513 | { "lua", http_req_action_register_lua }, |
| 4514 | { NULL, NULL } |
| 4515 | }}; |
| 4516 | |
| 4517 | static struct http_res_action_kw_list http_res_kws = {"lua", { }, { |
| 4518 | { "lua", http_res_action_register_lua }, |
| 4519 | { NULL, NULL } |
| 4520 | }}; |
| 4521 | |
| 4522 | static struct tcp_action_kw_list tcp_req_cont_kws = {"lua", { }, { |
| 4523 | { "lua", tcp_req_action_register_lua }, |
| 4524 | { NULL, NULL } |
| 4525 | }}; |
| 4526 | |
| 4527 | static struct tcp_action_kw_list tcp_res_cont_kws = {"lua", { }, { |
| 4528 | { "lua", tcp_res_action_register_lua }, |
| 4529 | { NULL, NULL } |
| 4530 | }}; |
| 4531 | |
Thierry FOURNIER | a4a0f3d | 2015-01-23 12:08:30 +0100 | [diff] [blame] | 4532 | int hlua_post_init() |
| 4533 | { |
| 4534 | struct hlua_init_function *init; |
| 4535 | const char *msg; |
| 4536 | enum hlua_exec ret; |
| 4537 | |
| 4538 | list_for_each_entry(init, &hlua_init_functions, l) { |
| 4539 | lua_rawgeti(gL.T, LUA_REGISTRYINDEX, init->function_ref); |
| 4540 | ret = hlua_ctx_resume(&gL, 0); |
| 4541 | switch (ret) { |
| 4542 | case HLUA_E_OK: |
| 4543 | lua_pop(gL.T, -1); |
| 4544 | return 1; |
| 4545 | case HLUA_E_AGAIN: |
| 4546 | Alert("lua init: yield not allowed.\n"); |
| 4547 | return 0; |
| 4548 | case HLUA_E_ERRMSG: |
| 4549 | msg = lua_tostring(gL.T, -1); |
| 4550 | Alert("lua init: %s.\n", msg); |
| 4551 | return 0; |
| 4552 | case HLUA_E_ERR: |
| 4553 | default: |
| 4554 | Alert("lua init: unknown runtime error.\n"); |
| 4555 | return 0; |
| 4556 | } |
| 4557 | } |
| 4558 | return 1; |
| 4559 | } |
| 4560 | |
Willy Tarreau | 32f61e2 | 2015-03-18 17:54:59 +0100 | [diff] [blame] | 4561 | /* The memory allocator used by the Lua stack. <ud> is a pointer to the |
| 4562 | * allocator's context. <ptr> is the pointer to alloc/free/realloc. <osize> |
| 4563 | * is the previously allocated size or the kind of object in case of a new |
| 4564 | * allocation. <nsize> is the requested new size. |
| 4565 | */ |
| 4566 | static void *hlua_alloc(void *ud, void *ptr, size_t osize, size_t nsize) |
| 4567 | { |
| 4568 | struct hlua_mem_allocator *zone = ud; |
| 4569 | |
| 4570 | if (nsize == 0) { |
| 4571 | /* it's a free */ |
| 4572 | if (ptr) |
| 4573 | zone->allocated -= osize; |
| 4574 | free(ptr); |
| 4575 | return NULL; |
| 4576 | } |
| 4577 | |
| 4578 | if (!ptr) { |
| 4579 | /* it's a new allocation */ |
| 4580 | if (zone->limit && zone->allocated + nsize > zone->limit) |
| 4581 | return NULL; |
| 4582 | |
| 4583 | ptr = malloc(nsize); |
| 4584 | if (ptr) |
| 4585 | zone->allocated += nsize; |
| 4586 | return ptr; |
| 4587 | } |
| 4588 | |
| 4589 | /* it's a realloc */ |
| 4590 | if (zone->limit && zone->allocated + nsize - osize > zone->limit) |
| 4591 | return NULL; |
| 4592 | |
| 4593 | ptr = realloc(ptr, nsize); |
| 4594 | if (ptr) |
| 4595 | zone->allocated += nsize - osize; |
| 4596 | return ptr; |
| 4597 | } |
| 4598 | |
Thierry FOURNIER | 6f1fd48 | 2015-01-23 14:06:13 +0100 | [diff] [blame] | 4599 | void hlua_init(void) |
| 4600 | { |
Thierry FOURNIER | 2ba18a2 | 2015-01-23 14:07:08 +0100 | [diff] [blame] | 4601 | int i; |
Thierry FOURNIER | d0fa538 | 2015-02-16 20:14:51 +0100 | [diff] [blame] | 4602 | int idx; |
| 4603 | struct sample_fetch *sf; |
Thierry FOURNIER | 594afe7 | 2015-03-10 23:58:30 +0100 | [diff] [blame] | 4604 | struct sample_conv *sc; |
Thierry FOURNIER | d0fa538 | 2015-02-16 20:14:51 +0100 | [diff] [blame] | 4605 | char *p; |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 4606 | #ifdef USE_OPENSSL |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 4607 | struct srv_kw *kw; |
| 4608 | int tmp_error; |
| 4609 | char *error; |
Thierry FOURNIER | 36d1374 | 2015-03-17 16:48:53 +0100 | [diff] [blame] | 4610 | char *args[] = { /* SSL client configuration. */ |
| 4611 | "ssl", |
| 4612 | "verify", |
| 4613 | "none", |
| 4614 | "force-sslv3", |
| 4615 | NULL |
| 4616 | }; |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 4617 | #endif |
Thierry FOURNIER | 2ba18a2 | 2015-01-23 14:07:08 +0100 | [diff] [blame] | 4618 | |
Thierry FOURNIER | 9ff7e6e | 2015-01-23 11:08:20 +0100 | [diff] [blame] | 4619 | /* Initialise com signals pool session. */ |
| 4620 | pool2_hlua_com = create_pool("hlua_com", sizeof(struct hlua_com), MEM_F_SHARED); |
| 4621 | |
Thierry FOURNIER | 5b8608f | 2015-02-16 19:43:25 +0100 | [diff] [blame] | 4622 | /* Initialise sleep pool. */ |
| 4623 | pool2_hlua_sleep = create_pool("hlua_sleep", sizeof(struct hlua_sleep), MEM_F_SHARED); |
| 4624 | |
Thierry FOURNIER | 6c9b52c | 2015-01-23 15:57:06 +0100 | [diff] [blame] | 4625 | /* Register configuration keywords. */ |
| 4626 | cfg_register_keywords(&cfg_kws); |
| 4627 | |
Thierry FOURNIER | 258d8aa | 2015-02-16 20:23:40 +0100 | [diff] [blame] | 4628 | /* Register custom HTTP rules. */ |
| 4629 | http_req_keywords_register(&http_req_kws); |
| 4630 | http_res_keywords_register(&http_res_kws); |
| 4631 | tcp_req_cont_keywords_register(&tcp_req_cont_kws); |
| 4632 | tcp_res_cont_keywords_register(&tcp_res_cont_kws); |
| 4633 | |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 4634 | /* Init main lua stack. */ |
| 4635 | gL.Mref = LUA_REFNIL; |
Thierry FOURNIER | a097fdf | 2015-03-03 15:17:35 +0100 | [diff] [blame] | 4636 | gL.flags = 0; |
Thierry FOURNIER | 9ff7e6e | 2015-01-23 11:08:20 +0100 | [diff] [blame] | 4637 | LIST_INIT(&gL.com); |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 4638 | gL.T = luaL_newstate(); |
| 4639 | hlua_sethlua(&gL); |
| 4640 | gL.Tref = LUA_REFNIL; |
| 4641 | gL.task = NULL; |
| 4642 | |
Willy Tarreau | 32f61e2 | 2015-03-18 17:54:59 +0100 | [diff] [blame] | 4643 | /* change the memory allocators to track memory usage */ |
| 4644 | lua_setallocf(gL.T, hlua_alloc, &hlua_global_allocator); |
| 4645 | |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 4646 | /* Initialise lua. */ |
| 4647 | luaL_openlibs(gL.T); |
Thierry FOURNIER | 2ba18a2 | 2015-01-23 14:07:08 +0100 | [diff] [blame] | 4648 | |
| 4649 | /* |
| 4650 | * |
| 4651 | * Create "core" object. |
| 4652 | * |
| 4653 | */ |
| 4654 | |
Thierry FOURNIER | a2d8c65 | 2015-03-11 17:29:39 +0100 | [diff] [blame] | 4655 | /* This table entry is the object "core" base. */ |
Thierry FOURNIER | 2ba18a2 | 2015-01-23 14:07:08 +0100 | [diff] [blame] | 4656 | lua_newtable(gL.T); |
| 4657 | |
| 4658 | /* Push the loglevel constants. */ |
Willy Tarreau | 80f5fae | 2015-02-27 16:38:20 +0100 | [diff] [blame] | 4659 | for (i = 0; i < NB_LOG_LEVELS; i++) |
Thierry FOURNIER | 2ba18a2 | 2015-01-23 14:07:08 +0100 | [diff] [blame] | 4660 | hlua_class_const_int(gL.T, log_levels[i], i); |
| 4661 | |
Thierry FOURNIER | a4a0f3d | 2015-01-23 12:08:30 +0100 | [diff] [blame] | 4662 | /* Register special functions. */ |
| 4663 | hlua_class_function(gL.T, "register_init", hlua_register_init); |
Thierry FOURNIER | 24f3353 | 2015-01-23 12:13:00 +0100 | [diff] [blame] | 4664 | hlua_class_function(gL.T, "register_task", hlua_register_task); |
Thierry FOURNIER | fa0e5dd | 2015-02-16 20:19:18 +0100 | [diff] [blame] | 4665 | hlua_class_function(gL.T, "register_fetches", hlua_register_fetches); |
Thierry FOURNIER | 9be813f | 2015-02-16 20:21:12 +0100 | [diff] [blame] | 4666 | hlua_class_function(gL.T, "register_converters", hlua_register_converters); |
Thierry FOURNIER | 13416fe | 2015-02-17 15:01:59 +0100 | [diff] [blame] | 4667 | hlua_class_function(gL.T, "yield", hlua_yield); |
Willy Tarreau | 5955166 | 2015-03-10 14:23:13 +0100 | [diff] [blame] | 4668 | hlua_class_function(gL.T, "set_nice", hlua_set_nice); |
Thierry FOURNIER | 5b8608f | 2015-02-16 19:43:25 +0100 | [diff] [blame] | 4669 | hlua_class_function(gL.T, "sleep", hlua_sleep); |
| 4670 | hlua_class_function(gL.T, "msleep", hlua_msleep); |
Thierry FOURNIER | 83758bb | 2015-02-04 13:21:04 +0100 | [diff] [blame] | 4671 | hlua_class_function(gL.T, "add_acl", hlua_add_acl); |
| 4672 | hlua_class_function(gL.T, "del_acl", hlua_del_acl); |
| 4673 | hlua_class_function(gL.T, "set_map", hlua_set_map); |
| 4674 | hlua_class_function(gL.T, "del_map", hlua_del_map); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 4675 | hlua_class_function(gL.T, "tcp", hlua_socket_new); |
Thierry FOURNIER | c798b5d | 2015-03-17 01:09:57 +0100 | [diff] [blame] | 4676 | hlua_class_function(gL.T, "log", hlua_log); |
| 4677 | hlua_class_function(gL.T, "Debug", hlua_log_debug); |
| 4678 | hlua_class_function(gL.T, "Info", hlua_log_info); |
| 4679 | hlua_class_function(gL.T, "Warning", hlua_log_warning); |
| 4680 | hlua_class_function(gL.T, "Alert", hlua_log_alert); |
Thierry FOURNIER | a4a0f3d | 2015-01-23 12:08:30 +0100 | [diff] [blame] | 4681 | |
Thierry FOURNIER | 2ba18a2 | 2015-01-23 14:07:08 +0100 | [diff] [blame] | 4682 | lua_setglobal(gL.T, "core"); |
Thierry FOURNIER | 65f34c6 | 2015-02-16 20:11:43 +0100 | [diff] [blame] | 4683 | |
| 4684 | /* |
| 4685 | * |
Thierry FOURNIER | 5a6d3fd | 2015-02-09 16:38:34 +0100 | [diff] [blame] | 4686 | * Register class Channel |
| 4687 | * |
| 4688 | */ |
| 4689 | |
| 4690 | /* Create and fill the metatable. */ |
| 4691 | lua_newtable(gL.T); |
| 4692 | |
| 4693 | /* Create and fille the __index entry. */ |
| 4694 | lua_pushstring(gL.T, "__index"); |
| 4695 | lua_newtable(gL.T); |
| 4696 | |
| 4697 | /* Register . */ |
| 4698 | hlua_class_function(gL.T, "get", hlua_channel_get); |
| 4699 | hlua_class_function(gL.T, "dup", hlua_channel_dup); |
| 4700 | hlua_class_function(gL.T, "getline", hlua_channel_getline); |
| 4701 | hlua_class_function(gL.T, "set", hlua_channel_set); |
| 4702 | hlua_class_function(gL.T, "append", hlua_channel_append); |
| 4703 | hlua_class_function(gL.T, "send", hlua_channel_send); |
| 4704 | hlua_class_function(gL.T, "forward", hlua_channel_forward); |
| 4705 | hlua_class_function(gL.T, "get_in_len", hlua_channel_get_in_len); |
| 4706 | hlua_class_function(gL.T, "get_out_len", hlua_channel_get_out_len); |
| 4707 | |
| 4708 | lua_settable(gL.T, -3); |
| 4709 | |
| 4710 | /* Register previous table in the registry with reference and named entry. */ |
| 4711 | lua_pushvalue(gL.T, -1); /* Copy the -1 entry and push it on the stack. */ |
| 4712 | lua_setfield(gL.T, LUA_REGISTRYINDEX, CLASS_CHANNEL); /* register class session. */ |
| 4713 | class_channel_ref = luaL_ref(gL.T, LUA_REGISTRYINDEX); /* reference class session. */ |
| 4714 | |
| 4715 | /* |
| 4716 | * |
Thierry FOURNIER | bb53c7b | 2015-03-11 18:28:02 +0100 | [diff] [blame] | 4717 | * Register class Fetches |
Thierry FOURNIER | 65f34c6 | 2015-02-16 20:11:43 +0100 | [diff] [blame] | 4718 | * |
| 4719 | */ |
| 4720 | |
| 4721 | /* Create and fill the metatable. */ |
| 4722 | lua_newtable(gL.T); |
| 4723 | |
| 4724 | /* Create and fille the __index entry. */ |
| 4725 | lua_pushstring(gL.T, "__index"); |
| 4726 | lua_newtable(gL.T); |
| 4727 | |
Thierry FOURNIER | d0fa538 | 2015-02-16 20:14:51 +0100 | [diff] [blame] | 4728 | /* Browse existing fetches and create the associated |
| 4729 | * object method. |
| 4730 | */ |
| 4731 | sf = NULL; |
| 4732 | while ((sf = sample_fetch_getnext(sf, &idx)) != NULL) { |
| 4733 | |
| 4734 | /* Dont register the keywork if the arguments check function are |
| 4735 | * not safe during the runtime. |
| 4736 | */ |
| 4737 | if ((sf->val_args != NULL) && |
| 4738 | (sf->val_args != val_payload_lv) && |
| 4739 | (sf->val_args != val_hdr)) |
| 4740 | continue; |
| 4741 | |
| 4742 | /* gL.Tua doesn't support '.' and '-' in the function names, replace it |
| 4743 | * by an underscore. |
| 4744 | */ |
| 4745 | strncpy(trash.str, sf->kw, trash.size); |
| 4746 | trash.str[trash.size - 1] = '\0'; |
| 4747 | for (p = trash.str; *p; p++) |
| 4748 | if (*p == '.' || *p == '-' || *p == '+') |
| 4749 | *p = '_'; |
| 4750 | |
| 4751 | /* Register the function. */ |
| 4752 | lua_pushstring(gL.T, trash.str); |
Willy Tarreau | 2ec2274 | 2015-03-10 14:27:20 +0100 | [diff] [blame] | 4753 | lua_pushlightuserdata(gL.T, sf); |
Thierry FOURNIER | d0fa538 | 2015-02-16 20:14:51 +0100 | [diff] [blame] | 4754 | lua_pushcclosure(gL.T, hlua_run_sample_fetch, 1); |
| 4755 | lua_settable(gL.T, -3); |
| 4756 | } |
| 4757 | |
Thierry FOURNIER | bb53c7b | 2015-03-11 18:28:02 +0100 | [diff] [blame] | 4758 | lua_settable(gL.T, -3); |
| 4759 | |
| 4760 | /* Register previous table in the registry with reference and named entry. */ |
| 4761 | lua_pushvalue(gL.T, -1); /* Copy the -1 entry and push it on the stack. */ |
| 4762 | lua_setfield(gL.T, LUA_REGISTRYINDEX, CLASS_FETCHES); /* register class session. */ |
| 4763 | class_fetches_ref = luaL_ref(gL.T, LUA_REGISTRYINDEX); /* reference class session. */ |
| 4764 | |
| 4765 | /* |
| 4766 | * |
Thierry FOURNIER | 594afe7 | 2015-03-10 23:58:30 +0100 | [diff] [blame] | 4767 | * Register class Converters |
| 4768 | * |
| 4769 | */ |
| 4770 | |
| 4771 | /* Create and fill the metatable. */ |
| 4772 | lua_newtable(gL.T); |
| 4773 | |
| 4774 | /* Create and fill the __index entry. */ |
| 4775 | lua_pushstring(gL.T, "__index"); |
| 4776 | lua_newtable(gL.T); |
| 4777 | |
| 4778 | /* Browse existing converters and create the associated |
| 4779 | * object method. |
| 4780 | */ |
| 4781 | sc = NULL; |
| 4782 | while ((sc = sample_conv_getnext(sc, &idx)) != NULL) { |
| 4783 | /* Dont register the keywork if the arguments check function are |
| 4784 | * not safe during the runtime. |
| 4785 | */ |
| 4786 | if (sc->val_args != NULL) |
| 4787 | continue; |
| 4788 | |
| 4789 | /* gL.Tua doesn't support '.' and '-' in the function names, replace it |
| 4790 | * by an underscore. |
| 4791 | */ |
| 4792 | strncpy(trash.str, sc->kw, trash.size); |
| 4793 | trash.str[trash.size - 1] = '\0'; |
| 4794 | for (p = trash.str; *p; p++) |
| 4795 | if (*p == '.' || *p == '-' || *p == '+') |
| 4796 | *p = '_'; |
| 4797 | |
| 4798 | /* Register the function. */ |
| 4799 | lua_pushstring(gL.T, trash.str); |
| 4800 | lua_pushlightuserdata(gL.T, sc); |
| 4801 | lua_pushcclosure(gL.T, hlua_run_sample_conv, 1); |
| 4802 | lua_settable(gL.T, -3); |
| 4803 | } |
| 4804 | |
| 4805 | lua_settable(gL.T, -3); |
| 4806 | |
| 4807 | /* Register previous table in the registry with reference and named entry. */ |
| 4808 | lua_pushvalue(gL.T, -1); /* Copy the -1 entry and push it on the stack. */ |
| 4809 | lua_setfield(gL.T, LUA_REGISTRYINDEX, CLASS_CONVERTERS); /* register class session. */ |
| 4810 | class_converters_ref = luaL_ref(gL.T, LUA_REGISTRYINDEX); /* reference class session. */ |
| 4811 | |
| 4812 | /* |
| 4813 | * |
Thierry FOURNIER | 08504f4 | 2015-03-16 14:17:08 +0100 | [diff] [blame] | 4814 | * Register class HTTP |
| 4815 | * |
| 4816 | */ |
| 4817 | |
| 4818 | /* Create and fill the metatable. */ |
| 4819 | lua_newtable(gL.T); |
| 4820 | |
| 4821 | /* Create and fille the __index entry. */ |
| 4822 | lua_pushstring(gL.T, "__index"); |
| 4823 | lua_newtable(gL.T); |
| 4824 | |
| 4825 | /* Register Lua functions. */ |
| 4826 | hlua_class_function(gL.T, "req_get_headers",hlua_http_req_get_headers); |
| 4827 | hlua_class_function(gL.T, "req_del_header", hlua_http_req_del_hdr); |
| 4828 | hlua_class_function(gL.T, "req_rep_header", hlua_http_req_rep_hdr); |
| 4829 | hlua_class_function(gL.T, "req_rep_value", hlua_http_req_rep_val); |
| 4830 | hlua_class_function(gL.T, "req_add_header", hlua_http_req_add_hdr); |
| 4831 | hlua_class_function(gL.T, "req_set_header", hlua_http_req_set_hdr); |
| 4832 | hlua_class_function(gL.T, "req_set_method", hlua_http_req_set_meth); |
| 4833 | hlua_class_function(gL.T, "req_set_path", hlua_http_req_set_path); |
| 4834 | hlua_class_function(gL.T, "req_set_query", hlua_http_req_set_query); |
| 4835 | hlua_class_function(gL.T, "req_set_uri", hlua_http_req_set_uri); |
| 4836 | |
| 4837 | hlua_class_function(gL.T, "res_get_headers",hlua_http_res_get_headers); |
| 4838 | hlua_class_function(gL.T, "res_del_header", hlua_http_res_del_hdr); |
| 4839 | hlua_class_function(gL.T, "res_rep_header", hlua_http_res_rep_hdr); |
| 4840 | hlua_class_function(gL.T, "res_rep_value", hlua_http_res_rep_val); |
| 4841 | hlua_class_function(gL.T, "res_add_header", hlua_http_res_add_hdr); |
| 4842 | hlua_class_function(gL.T, "res_set_header", hlua_http_res_set_hdr); |
| 4843 | |
| 4844 | lua_settable(gL.T, -3); |
| 4845 | |
| 4846 | /* Register previous table in the registry with reference and named entry. */ |
| 4847 | lua_pushvalue(gL.T, -1); /* Copy the -1 entry and push it on the stack. */ |
| 4848 | lua_setfield(gL.T, LUA_REGISTRYINDEX, CLASS_HTTP); /* register class session. */ |
| 4849 | class_http_ref = luaL_ref(gL.T, LUA_REGISTRYINDEX); /* reference class session. */ |
| 4850 | |
| 4851 | /* |
| 4852 | * |
Thierry FOURNIER | bb53c7b | 2015-03-11 18:28:02 +0100 | [diff] [blame] | 4853 | * Register class TXN |
| 4854 | * |
| 4855 | */ |
| 4856 | |
| 4857 | /* Create and fill the metatable. */ |
| 4858 | lua_newtable(gL.T); |
| 4859 | |
| 4860 | /* Create and fille the __index entry. */ |
| 4861 | lua_pushstring(gL.T, "__index"); |
| 4862 | lua_newtable(gL.T); |
| 4863 | |
Thierry FOURNIER | 05c0b8a | 2015-02-25 11:43:21 +0100 | [diff] [blame] | 4864 | /* Register Lua functions. */ |
Willy Tarreau | 5955166 | 2015-03-10 14:23:13 +0100 | [diff] [blame] | 4865 | hlua_class_function(gL.T, "set_priv", hlua_set_priv); |
| 4866 | hlua_class_function(gL.T, "get_priv", hlua_get_priv); |
Thierry FOURNIER | 893bfa3 | 2015-02-17 18:42:34 +0100 | [diff] [blame] | 4867 | hlua_class_function(gL.T, "close", hlua_txn_close); |
Thierry FOURNIER | 2cce353 | 2015-03-16 12:04:16 +0100 | [diff] [blame] | 4868 | hlua_class_function(gL.T, "set_loglevel",hlua_txn_set_loglevel); |
| 4869 | hlua_class_function(gL.T, "set_tos", hlua_txn_set_tos); |
| 4870 | hlua_class_function(gL.T, "set_mark", hlua_txn_set_mark); |
Thierry FOURNIER | c798b5d | 2015-03-17 01:09:57 +0100 | [diff] [blame] | 4871 | hlua_class_function(gL.T, "deflog", hlua_txn_deflog); |
| 4872 | hlua_class_function(gL.T, "log", hlua_txn_log); |
| 4873 | hlua_class_function(gL.T, "Debug", hlua_txn_log_debug); |
| 4874 | hlua_class_function(gL.T, "Info", hlua_txn_log_info); |
| 4875 | hlua_class_function(gL.T, "Warning", hlua_txn_log_warning); |
| 4876 | hlua_class_function(gL.T, "Alert", hlua_txn_log_alert); |
Thierry FOURNIER | 05c0b8a | 2015-02-25 11:43:21 +0100 | [diff] [blame] | 4877 | |
Thierry FOURNIER | 65f34c6 | 2015-02-16 20:11:43 +0100 | [diff] [blame] | 4878 | lua_settable(gL.T, -3); |
| 4879 | |
| 4880 | /* Register previous table in the registry with reference and named entry. */ |
| 4881 | lua_pushvalue(gL.T, -1); /* Copy the -1 entry and push it on the stack. */ |
| 4882 | lua_setfield(gL.T, LUA_REGISTRYINDEX, CLASS_TXN); /* register class session. */ |
| 4883 | class_txn_ref = luaL_ref(gL.T, LUA_REGISTRYINDEX); /* reference class session. */ |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 4884 | |
| 4885 | /* |
| 4886 | * |
| 4887 | * Register class Socket |
| 4888 | * |
| 4889 | */ |
| 4890 | |
| 4891 | /* Create and fill the metatable. */ |
| 4892 | lua_newtable(gL.T); |
| 4893 | |
| 4894 | /* Create and fille the __index entry. */ |
| 4895 | lua_pushstring(gL.T, "__index"); |
| 4896 | lua_newtable(gL.T); |
| 4897 | |
Baptiste Assmann | 84bb493 | 2015-03-02 21:40:06 +0100 | [diff] [blame] | 4898 | #ifdef USE_OPENSSL |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 4899 | hlua_class_function(gL.T, "connect_ssl", hlua_socket_connect_ssl); |
Baptiste Assmann | 84bb493 | 2015-03-02 21:40:06 +0100 | [diff] [blame] | 4900 | #endif |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 4901 | hlua_class_function(gL.T, "connect", hlua_socket_connect); |
| 4902 | hlua_class_function(gL.T, "send", hlua_socket_send); |
| 4903 | hlua_class_function(gL.T, "receive", hlua_socket_receive); |
| 4904 | hlua_class_function(gL.T, "close", hlua_socket_close); |
| 4905 | hlua_class_function(gL.T, "getpeername", hlua_socket_getpeername); |
| 4906 | hlua_class_function(gL.T, "getsockname", hlua_socket_getsockname); |
| 4907 | hlua_class_function(gL.T, "setoption", hlua_socket_setoption); |
| 4908 | hlua_class_function(gL.T, "settimeout", hlua_socket_settimeout); |
| 4909 | |
| 4910 | lua_settable(gL.T, -3); /* Push the last 2 entries in the table at index -3 */ |
| 4911 | |
| 4912 | /* Register the garbage collector entry. */ |
| 4913 | lua_pushstring(gL.T, "__gc"); |
| 4914 | lua_pushcclosure(gL.T, hlua_socket_gc, 0); |
| 4915 | lua_settable(gL.T, -3); /* Push the last 2 entries in the table at index -3 */ |
| 4916 | |
| 4917 | /* Register previous table in the registry with reference and named entry. */ |
| 4918 | lua_pushvalue(gL.T, -1); /* Copy the -1 entry and push it on the stack. */ |
| 4919 | lua_pushvalue(gL.T, -1); /* Copy the -1 entry and push it on the stack. */ |
| 4920 | lua_setfield(gL.T, LUA_REGISTRYINDEX, CLASS_SOCKET); /* register class socket. */ |
| 4921 | class_socket_ref = luaL_ref(gL.T, LUA_REGISTRYINDEX); /* reference class socket. */ |
| 4922 | |
| 4923 | /* Proxy and server configuration initialisation. */ |
| 4924 | memset(&socket_proxy, 0, sizeof(socket_proxy)); |
| 4925 | init_new_proxy(&socket_proxy); |
| 4926 | socket_proxy.parent = NULL; |
| 4927 | socket_proxy.last_change = now.tv_sec; |
| 4928 | socket_proxy.id = "LUA-SOCKET"; |
| 4929 | socket_proxy.cap = PR_CAP_FE | PR_CAP_BE; |
| 4930 | socket_proxy.maxconn = 0; |
| 4931 | socket_proxy.accept = NULL; |
| 4932 | socket_proxy.options2 |= PR_O2_INDEPSTR; |
| 4933 | socket_proxy.srv = NULL; |
| 4934 | socket_proxy.conn_retries = 0; |
| 4935 | socket_proxy.timeout.connect = 5000; /* By default the timeout connection is 5s. */ |
| 4936 | |
| 4937 | /* Init TCP server: unchanged parameters */ |
| 4938 | memset(&socket_tcp, 0, sizeof(socket_tcp)); |
| 4939 | socket_tcp.next = NULL; |
| 4940 | socket_tcp.proxy = &socket_proxy; |
| 4941 | socket_tcp.obj_type = OBJ_TYPE_SERVER; |
| 4942 | LIST_INIT(&socket_tcp.actconns); |
| 4943 | LIST_INIT(&socket_tcp.pendconns); |
| 4944 | socket_tcp.state = SRV_ST_RUNNING; /* early server setup */ |
| 4945 | socket_tcp.last_change = 0; |
| 4946 | socket_tcp.id = "LUA-TCP-CONN"; |
| 4947 | socket_tcp.check.state &= ~CHK_ST_ENABLED; /* Disable health checks. */ |
| 4948 | socket_tcp.agent.state &= ~CHK_ST_ENABLED; /* Disable health checks. */ |
| 4949 | socket_tcp.pp_opts = 0; /* Remove proxy protocol. */ |
| 4950 | |
| 4951 | /* XXX: Copy default parameter from default server, |
| 4952 | * but the default server is not initialized. |
| 4953 | */ |
| 4954 | socket_tcp.maxqueue = socket_proxy.defsrv.maxqueue; |
| 4955 | socket_tcp.minconn = socket_proxy.defsrv.minconn; |
| 4956 | socket_tcp.maxconn = socket_proxy.defsrv.maxconn; |
| 4957 | socket_tcp.slowstart = socket_proxy.defsrv.slowstart; |
| 4958 | socket_tcp.onerror = socket_proxy.defsrv.onerror; |
| 4959 | socket_tcp.onmarkeddown = socket_proxy.defsrv.onmarkeddown; |
| 4960 | socket_tcp.onmarkedup = socket_proxy.defsrv.onmarkedup; |
| 4961 | socket_tcp.consecutive_errors_limit = socket_proxy.defsrv.consecutive_errors_limit; |
| 4962 | socket_tcp.uweight = socket_proxy.defsrv.iweight; |
| 4963 | socket_tcp.iweight = socket_proxy.defsrv.iweight; |
| 4964 | |
| 4965 | socket_tcp.check.status = HCHK_STATUS_INI; |
| 4966 | socket_tcp.check.rise = socket_proxy.defsrv.check.rise; |
| 4967 | socket_tcp.check.fall = socket_proxy.defsrv.check.fall; |
| 4968 | socket_tcp.check.health = socket_tcp.check.rise; /* socket, but will fall down at first failure */ |
| 4969 | socket_tcp.check.server = &socket_tcp; |
| 4970 | |
| 4971 | socket_tcp.agent.status = HCHK_STATUS_INI; |
| 4972 | socket_tcp.agent.rise = socket_proxy.defsrv.agent.rise; |
| 4973 | socket_tcp.agent.fall = socket_proxy.defsrv.agent.fall; |
| 4974 | socket_tcp.agent.health = socket_tcp.agent.rise; /* socket, but will fall down at first failure */ |
| 4975 | socket_tcp.agent.server = &socket_tcp; |
| 4976 | |
| 4977 | socket_tcp.xprt = &raw_sock; |
| 4978 | |
| 4979 | #ifdef USE_OPENSSL |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 4980 | /* Init TCP server: unchanged parameters */ |
| 4981 | memset(&socket_ssl, 0, sizeof(socket_ssl)); |
| 4982 | socket_ssl.next = NULL; |
| 4983 | socket_ssl.proxy = &socket_proxy; |
| 4984 | socket_ssl.obj_type = OBJ_TYPE_SERVER; |
| 4985 | LIST_INIT(&socket_ssl.actconns); |
| 4986 | LIST_INIT(&socket_ssl.pendconns); |
| 4987 | socket_ssl.state = SRV_ST_RUNNING; /* early server setup */ |
| 4988 | socket_ssl.last_change = 0; |
| 4989 | socket_ssl.id = "LUA-SSL-CONN"; |
| 4990 | socket_ssl.check.state &= ~CHK_ST_ENABLED; /* Disable health checks. */ |
| 4991 | socket_ssl.agent.state &= ~CHK_ST_ENABLED; /* Disable health checks. */ |
| 4992 | socket_ssl.pp_opts = 0; /* Remove proxy protocol. */ |
| 4993 | |
| 4994 | /* XXX: Copy default parameter from default server, |
| 4995 | * but the default server is not initialized. |
| 4996 | */ |
| 4997 | socket_ssl.maxqueue = socket_proxy.defsrv.maxqueue; |
| 4998 | socket_ssl.minconn = socket_proxy.defsrv.minconn; |
| 4999 | socket_ssl.maxconn = socket_proxy.defsrv.maxconn; |
| 5000 | socket_ssl.slowstart = socket_proxy.defsrv.slowstart; |
| 5001 | socket_ssl.onerror = socket_proxy.defsrv.onerror; |
| 5002 | socket_ssl.onmarkeddown = socket_proxy.defsrv.onmarkeddown; |
| 5003 | socket_ssl.onmarkedup = socket_proxy.defsrv.onmarkedup; |
| 5004 | socket_ssl.consecutive_errors_limit = socket_proxy.defsrv.consecutive_errors_limit; |
| 5005 | socket_ssl.uweight = socket_proxy.defsrv.iweight; |
| 5006 | socket_ssl.iweight = socket_proxy.defsrv.iweight; |
| 5007 | |
| 5008 | socket_ssl.check.status = HCHK_STATUS_INI; |
| 5009 | socket_ssl.check.rise = socket_proxy.defsrv.check.rise; |
| 5010 | socket_ssl.check.fall = socket_proxy.defsrv.check.fall; |
| 5011 | socket_ssl.check.health = socket_ssl.check.rise; /* socket, but will fall down at first failure */ |
| 5012 | socket_ssl.check.server = &socket_ssl; |
| 5013 | |
| 5014 | socket_ssl.agent.status = HCHK_STATUS_INI; |
| 5015 | socket_ssl.agent.rise = socket_proxy.defsrv.agent.rise; |
| 5016 | socket_ssl.agent.fall = socket_proxy.defsrv.agent.fall; |
| 5017 | socket_ssl.agent.health = socket_ssl.agent.rise; /* socket, but will fall down at first failure */ |
| 5018 | socket_ssl.agent.server = &socket_ssl; |
| 5019 | |
Thierry FOURNIER | 36d1374 | 2015-03-17 16:48:53 +0100 | [diff] [blame] | 5020 | socket_ssl.use_ssl = 1; |
| 5021 | socket_ssl.xprt = &ssl_sock; |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 5022 | |
Thierry FOURNIER | 36d1374 | 2015-03-17 16:48:53 +0100 | [diff] [blame] | 5023 | for (idx = 0; args[idx] != NULL; idx++) { |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 5024 | if ((kw = srv_find_kw(args[idx])) != NULL) { /* Maybe it's registered server keyword */ |
| 5025 | /* |
| 5026 | * |
| 5027 | * If the keyword is not known, we can search in the registered |
| 5028 | * server keywords. This is usefull to configure special SSL |
| 5029 | * features like client certificates and ssl_verify. |
| 5030 | * |
| 5031 | */ |
| 5032 | tmp_error = kw->parse(args, &idx, &socket_proxy, &socket_ssl, &error); |
| 5033 | if (tmp_error != 0) { |
| 5034 | fprintf(stderr, "INTERNAL ERROR: %s\n", error); |
| 5035 | abort(); /* This must be never arrives because the command line |
| 5036 | not editable by the user. */ |
| 5037 | } |
| 5038 | idx += kw->skip; |
| 5039 | } |
| 5040 | } |
| 5041 | |
| 5042 | /* Initialize SSL server. */ |
Thierry FOURNIER | 36d1374 | 2015-03-17 16:48:53 +0100 | [diff] [blame] | 5043 | ssl_sock_prepare_srv_ctx(&socket_ssl, &socket_proxy); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame] | 5044 | #endif |
Thierry FOURNIER | 6f1fd48 | 2015-01-23 14:06:13 +0100 | [diff] [blame] | 5045 | } |