Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame^] | 1 | #include <sys/socket.h> |
| 2 | |
Thierry FOURNIER | 6f1fd48 | 2015-01-23 14:06:13 +0100 | [diff] [blame] | 3 | #include <lauxlib.h> |
| 4 | #include <lua.h> |
| 5 | #include <lualib.h> |
| 6 | |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 7 | #include <ebpttree.h> |
| 8 | |
| 9 | #include <common/cfgparse.h> |
| 10 | |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame^] | 11 | #include <types/connection.h> |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 12 | #include <types/hlua.h> |
Thierry FOURNIER | 65f34c6 | 2015-02-16 20:11:43 +0100 | [diff] [blame] | 13 | #include <types/proto_tcp.h> |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 14 | #include <types/proxy.h> |
| 15 | |
Thierry FOURNIER | 55da165 | 2015-01-23 11:36:30 +0100 | [diff] [blame] | 16 | #include <proto/arg.h> |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame^] | 17 | #include <proto/channel.h> |
Thierry FOURNIER | 9a819e7 | 2015-02-16 20:22:55 +0100 | [diff] [blame] | 18 | #include <proto/hdr_idx.h> |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame^] | 19 | #include <proto/obj_type.h> |
Thierry FOURNIER | d0fa538 | 2015-02-16 20:14:51 +0100 | [diff] [blame] | 20 | #include <proto/payload.h> |
| 21 | #include <proto/proto_http.h> |
Thierry FOURNIER | 258d8aa | 2015-02-16 20:23:40 +0100 | [diff] [blame] | 22 | #include <proto/proto_tcp.h> |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame^] | 23 | #include <proto/raw_sock.h> |
Thierry FOURNIER | d0fa538 | 2015-02-16 20:14:51 +0100 | [diff] [blame] | 24 | #include <proto/sample.h> |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame^] | 25 | #include <proto/server.h> |
| 26 | #include <proto/session.h> |
| 27 | #include <proto/ssl_sock.h> |
| 28 | #include <proto/stream_interface.h> |
Thierry FOURNIER | 9ff7e6e | 2015-01-23 11:08:20 +0100 | [diff] [blame] | 29 | #include <proto/task.h> |
| 30 | |
Thierry FOURNIER | 6f1fd48 | 2015-01-23 14:06:13 +0100 | [diff] [blame] | 31 | /* Lua uses longjmp to perform yield or throwing errors. This |
| 32 | * macro is used only for identifying the function that can |
| 33 | * not return because a longjmp is executed. |
| 34 | * __LJMP marks a prototype of hlua file that can use longjmp. |
| 35 | * WILL_LJMP() marks an lua function that will use longjmp. |
| 36 | * MAY_LJMP() marks an lua function that may use longjmp. |
| 37 | */ |
| 38 | #define __LJMP |
| 39 | #define WILL_LJMP(func) func |
| 40 | #define MAY_LJMP(func) func |
| 41 | |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 42 | /* The main Lua execution context. */ |
| 43 | struct hlua gL; |
| 44 | |
Thierry FOURNIER | 9ff7e6e | 2015-01-23 11:08:20 +0100 | [diff] [blame] | 45 | /* This is the memory pool containing all the signal structs. These |
| 46 | * struct are used to store each requiered signal between two tasks. |
| 47 | */ |
| 48 | struct pool_head *pool2_hlua_com; |
Thierry FOURNIER | 5b8608f | 2015-02-16 19:43:25 +0100 | [diff] [blame] | 49 | struct pool_head *pool2_hlua_sleep; |
Thierry FOURNIER | 9ff7e6e | 2015-01-23 11:08:20 +0100 | [diff] [blame] | 50 | |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame^] | 51 | /* Used for Socket connection. */ |
| 52 | static struct proxy socket_proxy; |
| 53 | static struct server socket_tcp; |
| 54 | #ifdef USE_OPENSSL |
| 55 | static struct server socket_ssl; |
| 56 | #endif |
| 57 | |
Thierry FOURNIER | a4a0f3d | 2015-01-23 12:08:30 +0100 | [diff] [blame] | 58 | /* List head of the function called at the initialisation time. */ |
| 59 | struct list hlua_init_functions = LIST_HEAD_INIT(hlua_init_functions); |
| 60 | |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 61 | /* Store the fast lua context for coroutines. This tree uses the |
| 62 | * Lua stack pointer value as indexed entry, and store the associated |
| 63 | * hlua context. |
| 64 | */ |
| 65 | struct eb_root hlua_ctx = EB_ROOT_UNIQUE; |
| 66 | |
Thierry FOURNIER | 2ba18a2 | 2015-01-23 14:07:08 +0100 | [diff] [blame] | 67 | /* The following variables contains the reference of the different |
| 68 | * Lua classes. These references are useful for identify metadata |
| 69 | * associated with an object. |
| 70 | */ |
| 71 | static int class_core_ref; |
Thierry FOURNIER | 65f34c6 | 2015-02-16 20:11:43 +0100 | [diff] [blame] | 72 | static int class_txn_ref; |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame^] | 73 | static int class_socket_ref; |
Thierry FOURNIER | 2ba18a2 | 2015-01-23 14:07:08 +0100 | [diff] [blame] | 74 | |
Thierry FOURNIER | 55da165 | 2015-01-23 11:36:30 +0100 | [diff] [blame] | 75 | /* These functions converts types between HAProxy internal args or |
| 76 | * sample and LUA types. Another function permits to check if the |
| 77 | * LUA stack contains arguments according with an required ARG_T |
| 78 | * format. |
| 79 | */ |
| 80 | static int hlua_arg2lua(lua_State *L, const struct arg *arg); |
| 81 | static int hlua_lua2arg(lua_State *L, int ud, struct arg *arg); |
| 82 | __LJMP static int hlua_lua2arg_check(lua_State *L, int first, struct arg *argp, unsigned int mask); |
| 83 | static int hlua_smp2lua(lua_State *L, const struct sample *smp); |
| 84 | static int hlua_lua2smp(lua_State *L, int ud, struct sample *smp); |
| 85 | |
Thierry FOURNIER | e8b9a40 | 2015-02-25 18:48:12 +0100 | [diff] [blame] | 86 | /* Used to check an Lua function type in the stack. It creates and |
| 87 | * returns a reference of the function. This function throws an |
| 88 | * error if the rgument is not a "function". |
| 89 | */ |
| 90 | __LJMP unsigned int hlua_checkfunction(lua_State *L, int argno) |
| 91 | { |
| 92 | if (!lua_isfunction(L, argno)) { |
| 93 | const char *msg = lua_pushfstring(L, "function expected, got %s", luaL_typename(L, -1)); |
| 94 | WILL_LJMP(luaL_argerror(L, argno, msg)); |
| 95 | } |
| 96 | lua_pushvalue(L, argno); |
| 97 | return luaL_ref(L, LUA_REGISTRYINDEX); |
| 98 | } |
| 99 | |
| 100 | /* The three following functions are useful for adding entries |
| 101 | * in a table. These functions takes a string and respectively an |
| 102 | * integer, a string or a function and add it to the table in the |
| 103 | * top of the stack. |
| 104 | * |
| 105 | * These functions throws an error if no more stack size is |
| 106 | * available. |
| 107 | */ |
| 108 | __LJMP static inline void hlua_class_const_int(lua_State *L, const char *name, |
| 109 | unsigned int value) |
| 110 | { |
| 111 | if (!lua_checkstack(L, 2)) |
| 112 | WILL_LJMP(luaL_error(L, "full stack")); |
| 113 | lua_pushstring(L, name); |
| 114 | lua_pushunsigned(L, value); |
| 115 | lua_settable(L, -3); |
| 116 | } |
| 117 | __LJMP static inline void hlua_class_const_str(lua_State *L, const char *name, |
| 118 | const char *value) |
| 119 | { |
| 120 | if (!lua_checkstack(L, 2)) |
| 121 | WILL_LJMP(luaL_error(L, "full stack")); |
| 122 | lua_pushstring(L, name); |
| 123 | lua_pushstring(L, value); |
| 124 | lua_settable(L, -3); |
| 125 | } |
| 126 | __LJMP static inline void hlua_class_function(lua_State *L, const char *name, |
| 127 | int (*function)(lua_State *L)) |
| 128 | { |
| 129 | if (!lua_checkstack(L, 2)) |
| 130 | WILL_LJMP(luaL_error(L, "full stack")); |
| 131 | lua_pushstring(L, name); |
| 132 | lua_pushcclosure(L, function, 0); |
| 133 | lua_settable(L, -3); |
| 134 | } |
| 135 | |
| 136 | /* This function check the number of arguments available in the |
| 137 | * stack. If the number of arguments available is not the same |
| 138 | * then <nb> an error is throwed. |
| 139 | */ |
| 140 | __LJMP static inline void check_args(lua_State *L, int nb, char *fcn) |
| 141 | { |
| 142 | if (lua_gettop(L) == nb) |
| 143 | return; |
| 144 | WILL_LJMP(luaL_error(L, "'%s' needs %d arguments", fcn, nb)); |
| 145 | } |
| 146 | |
| 147 | /* Return true if the data in stack[<ud>] is an object of |
| 148 | * type <class_ref>. |
| 149 | */ |
| 150 | static int hlua_udataistype(lua_State *L, int ud, int class_ref) |
| 151 | { |
| 152 | void *p = lua_touserdata(L, ud); |
| 153 | if (!p) |
| 154 | return 0; |
| 155 | |
| 156 | if (!lua_getmetatable(L, ud)) |
| 157 | return 0; |
| 158 | |
| 159 | lua_rawgeti(L, LUA_REGISTRYINDEX, class_ref); |
| 160 | if (!lua_rawequal(L, -1, -2)) { |
| 161 | lua_pop(L, 2); |
| 162 | return 0; |
| 163 | } |
| 164 | |
| 165 | lua_pop(L, 2); |
| 166 | return 1; |
| 167 | } |
| 168 | |
| 169 | /* Return an object of the expected type, or throws an error. */ |
| 170 | __LJMP static void *hlua_checkudata(lua_State *L, int ud, int class_ref) |
| 171 | { |
| 172 | if (!hlua_udataistype(L, ud, class_ref)) |
| 173 | WILL_LJMP(luaL_argerror(L, 1, NULL)); |
| 174 | return lua_touserdata(L, ud); |
| 175 | } |
| 176 | |
| 177 | /* This fucntion push an error string prefixed by the file name |
| 178 | * and the line number where the error is encountered. |
| 179 | */ |
| 180 | static int hlua_pusherror(lua_State *L, const char *fmt, ...) |
| 181 | { |
| 182 | va_list argp; |
| 183 | va_start(argp, fmt); |
| 184 | luaL_where(L, 1); |
| 185 | lua_pushvfstring(L, fmt, argp); |
| 186 | va_end(argp); |
| 187 | lua_concat(L, 2); |
| 188 | return 1; |
| 189 | } |
| 190 | |
Thierry FOURNIER | 9ff7e6e | 2015-01-23 11:08:20 +0100 | [diff] [blame] | 191 | /* This function register a new signal. "lua" is the current lua |
| 192 | * execution context. It contains a pointer to the associated task. |
| 193 | * "link" is a list head attached to an other task that must be wake |
| 194 | * the lua task if an event occurs. This is useful with external |
| 195 | * events like TCP I/O or sleep functions. This funcion allocate |
| 196 | * memory for the signal. |
| 197 | */ |
| 198 | static int hlua_com_new(struct hlua *lua, struct list *link) |
| 199 | { |
| 200 | struct hlua_com *com = pool_alloc2(pool2_hlua_com); |
| 201 | if (!com) |
| 202 | return 0; |
| 203 | LIST_ADDQ(&lua->com, &com->purge_me); |
| 204 | LIST_ADDQ(link, &com->wake_me); |
| 205 | com->task = lua->task; |
| 206 | return 1; |
| 207 | } |
| 208 | |
| 209 | /* This function purge all the pending signals when the LUA execution |
| 210 | * is finished. This prevent than a coprocess try to wake a deleted |
| 211 | * task. This function remove the memory associated to the signal. |
| 212 | */ |
| 213 | static void hlua_com_purge(struct hlua *lua) |
| 214 | { |
| 215 | struct hlua_com *com, *back; |
| 216 | |
| 217 | /* Delete all pending communication signals. */ |
| 218 | list_for_each_entry_safe(com, back, &lua->com, purge_me) { |
| 219 | LIST_DEL(&com->purge_me); |
| 220 | LIST_DEL(&com->wake_me); |
| 221 | pool_free2(pool2_hlua_com, com); |
| 222 | } |
| 223 | } |
| 224 | |
| 225 | /* This function sends signals. It wakes all the tasks attached |
| 226 | * to a list head, and remove the signal, and free the used |
| 227 | * memory. |
| 228 | */ |
| 229 | static void hlua_com_wake(struct list *wake) |
| 230 | { |
| 231 | struct hlua_com *com, *back; |
| 232 | |
| 233 | /* Wake task and delete all pending communication signals. */ |
| 234 | list_for_each_entry_safe(com, back, wake, wake_me) { |
| 235 | LIST_DEL(&com->purge_me); |
| 236 | LIST_DEL(&com->wake_me); |
| 237 | task_wakeup(com->task, TASK_WOKEN_MSG); |
| 238 | pool_free2(pool2_hlua_com, com); |
| 239 | } |
| 240 | } |
| 241 | |
Thierry FOURNIER | 55da165 | 2015-01-23 11:36:30 +0100 | [diff] [blame] | 242 | /* This functions is used with sample fetch and converters. It |
| 243 | * converts the HAProxy configuration argument in a lua stack |
| 244 | * values. |
| 245 | * |
| 246 | * It takes an array of "arg", and each entry of the array is |
| 247 | * converted and pushed in the LUA stack. |
| 248 | */ |
| 249 | static int hlua_arg2lua(lua_State *L, const struct arg *arg) |
| 250 | { |
| 251 | switch (arg->type) { |
| 252 | case ARGT_SINT: |
| 253 | lua_pushinteger(L, arg->data.sint); |
| 254 | break; |
| 255 | |
| 256 | case ARGT_UINT: |
| 257 | case ARGT_TIME: |
| 258 | case ARGT_SIZE: |
| 259 | lua_pushunsigned(L, arg->data.sint); |
| 260 | break; |
| 261 | |
| 262 | case ARGT_STR: |
| 263 | lua_pushlstring(L, arg->data.str.str, arg->data.str.len); |
| 264 | break; |
| 265 | |
| 266 | case ARGT_IPV4: |
| 267 | case ARGT_IPV6: |
| 268 | case ARGT_MSK4: |
| 269 | case ARGT_MSK6: |
| 270 | case ARGT_FE: |
| 271 | case ARGT_BE: |
| 272 | case ARGT_TAB: |
| 273 | case ARGT_SRV: |
| 274 | case ARGT_USR: |
| 275 | case ARGT_MAP: |
| 276 | default: |
| 277 | lua_pushnil(L); |
| 278 | break; |
| 279 | } |
| 280 | return 1; |
| 281 | } |
| 282 | |
| 283 | /* This function take one entrie in an LUA stack at the index "ud", |
| 284 | * and try to convert it in an HAProxy argument entry. This is useful |
| 285 | * with sample fetch wrappers. The input arguments are gived to the |
| 286 | * lua wrapper and converted as arg list by thi function. |
| 287 | */ |
| 288 | static int hlua_lua2arg(lua_State *L, int ud, struct arg *arg) |
| 289 | { |
| 290 | switch (lua_type(L, ud)) { |
| 291 | |
| 292 | case LUA_TNUMBER: |
| 293 | case LUA_TBOOLEAN: |
| 294 | arg->type = ARGT_SINT; |
| 295 | arg->data.sint = lua_tointeger(L, ud); |
| 296 | break; |
| 297 | |
| 298 | case LUA_TSTRING: |
| 299 | arg->type = ARGT_STR; |
| 300 | arg->data.str.str = (char *)lua_tolstring(L, ud, (size_t *)&arg->data.str.len); |
| 301 | break; |
| 302 | |
| 303 | case LUA_TUSERDATA: |
| 304 | case LUA_TNIL: |
| 305 | case LUA_TTABLE: |
| 306 | case LUA_TFUNCTION: |
| 307 | case LUA_TTHREAD: |
| 308 | case LUA_TLIGHTUSERDATA: |
| 309 | arg->type = ARGT_SINT; |
| 310 | arg->data.uint = 0; |
| 311 | break; |
| 312 | } |
| 313 | return 1; |
| 314 | } |
| 315 | |
| 316 | /* the following functions are used to convert a struct sample |
| 317 | * in Lua type. This useful to convert the return of the |
| 318 | * fetchs or converters. |
| 319 | */ |
| 320 | static int hlua_smp2lua(lua_State *L, const struct sample *smp) |
| 321 | { |
| 322 | switch (smp->type) { |
| 323 | case SMP_T_SINT: |
| 324 | lua_pushinteger(L, smp->data.sint); |
| 325 | break; |
| 326 | |
| 327 | case SMP_T_BOOL: |
| 328 | case SMP_T_UINT: |
| 329 | lua_pushunsigned(L, smp->data.uint); |
| 330 | break; |
| 331 | |
| 332 | case SMP_T_BIN: |
| 333 | case SMP_T_STR: |
| 334 | lua_pushlstring(L, smp->data.str.str, smp->data.str.len); |
| 335 | break; |
| 336 | |
| 337 | case SMP_T_METH: |
| 338 | switch (smp->data.meth.meth) { |
| 339 | case HTTP_METH_OPTIONS: lua_pushstring(L, "OPTIONS"); break; |
| 340 | case HTTP_METH_GET: lua_pushstring(L, "GET"); break; |
| 341 | case HTTP_METH_HEAD: lua_pushstring(L, "HEAD"); break; |
| 342 | case HTTP_METH_POST: lua_pushstring(L, "POST"); break; |
| 343 | case HTTP_METH_PUT: lua_pushstring(L, "PUT"); break; |
| 344 | case HTTP_METH_DELETE: lua_pushstring(L, "DELETE"); break; |
| 345 | case HTTP_METH_TRACE: lua_pushstring(L, "TRACE"); break; |
| 346 | case HTTP_METH_CONNECT: lua_pushstring(L, "CONNECT"); break; |
| 347 | case HTTP_METH_OTHER: |
| 348 | lua_pushlstring(L, smp->data.meth.str.str, smp->data.meth.str.len); |
| 349 | break; |
| 350 | default: |
| 351 | lua_pushnil(L); |
| 352 | break; |
| 353 | } |
| 354 | break; |
| 355 | |
| 356 | case SMP_T_IPV4: |
| 357 | case SMP_T_IPV6: |
| 358 | case SMP_T_ADDR: /* This type is never used to qualify a sample. */ |
| 359 | default: |
| 360 | lua_pushnil(L); |
| 361 | break; |
| 362 | } |
| 363 | return 1; |
| 364 | } |
| 365 | |
| 366 | /* the following functions are used to convert an Lua type in a |
| 367 | * struct sample. This is useful to provide data from a converter |
| 368 | * to the LUA code. |
| 369 | */ |
| 370 | static int hlua_lua2smp(lua_State *L, int ud, struct sample *smp) |
| 371 | { |
| 372 | switch (lua_type(L, ud)) { |
| 373 | |
| 374 | case LUA_TNUMBER: |
| 375 | smp->type = SMP_T_SINT; |
| 376 | smp->data.sint = lua_tointeger(L, ud); |
| 377 | break; |
| 378 | |
| 379 | |
| 380 | case LUA_TBOOLEAN: |
| 381 | smp->type = SMP_T_BOOL; |
| 382 | smp->data.uint = lua_toboolean(L, ud); |
| 383 | break; |
| 384 | |
| 385 | case LUA_TSTRING: |
| 386 | smp->type = SMP_T_STR; |
| 387 | smp->flags |= SMP_F_CONST; |
| 388 | smp->data.str.str = (char *)lua_tolstring(L, ud, (size_t *)&smp->data.str.len); |
| 389 | break; |
| 390 | |
| 391 | case LUA_TUSERDATA: |
| 392 | case LUA_TNIL: |
| 393 | case LUA_TTABLE: |
| 394 | case LUA_TFUNCTION: |
| 395 | case LUA_TTHREAD: |
| 396 | case LUA_TLIGHTUSERDATA: |
| 397 | smp->type = SMP_T_BOOL; |
| 398 | smp->data.uint = 0; |
| 399 | break; |
| 400 | } |
| 401 | return 1; |
| 402 | } |
| 403 | |
| 404 | /* This function check the "argp" builded by another conversion function |
| 405 | * is in accord with the expected argp defined by the "mask". The fucntion |
| 406 | * returns true or false. It can be adjust the types if there compatibles. |
| 407 | */ |
| 408 | __LJMP int hlua_lua2arg_check(lua_State *L, int first, struct arg *argp, unsigned int mask) |
| 409 | { |
| 410 | int min_arg; |
| 411 | int idx; |
| 412 | |
| 413 | idx = 0; |
| 414 | min_arg = ARGM(mask); |
| 415 | mask >>= ARGM_BITS; |
| 416 | |
| 417 | while (1) { |
| 418 | |
| 419 | /* Check oversize. */ |
| 420 | if (idx >= ARGM_NBARGS && argp[idx].type != ARGT_STOP) { |
| 421 | WILL_LJMP(luaL_argerror(L, first + idx, "Malformad argument mask")); |
| 422 | } |
| 423 | |
| 424 | /* Check for mandatory arguments. */ |
| 425 | if (argp[idx].type == ARGT_STOP) { |
| 426 | if (idx + 1 < min_arg) |
| 427 | WILL_LJMP(luaL_argerror(L, first + idx, "Mandatory argument expected")); |
| 428 | return 0; |
| 429 | } |
| 430 | |
| 431 | /* Check for exceed the number of requiered argument. */ |
| 432 | if ((mask & ARGT_MASK) == ARGT_STOP && |
| 433 | argp[idx].type != ARGT_STOP) { |
| 434 | WILL_LJMP(luaL_argerror(L, first + idx, "Last argument expected")); |
| 435 | } |
| 436 | |
| 437 | if ((mask & ARGT_MASK) == ARGT_STOP && |
| 438 | argp[idx].type == ARGT_STOP) { |
| 439 | return 0; |
| 440 | } |
| 441 | |
| 442 | /* Compatibility mask. */ |
| 443 | switch (argp[idx].type) { |
| 444 | case ARGT_SINT: |
| 445 | switch (mask & ARGT_MASK) { |
| 446 | case ARGT_UINT: argp[idx].type = mask & ARGT_MASK; break; |
| 447 | case ARGT_TIME: argp[idx].type = mask & ARGT_MASK; break; |
| 448 | case ARGT_SIZE: argp[idx].type = mask & ARGT_MASK; break; |
| 449 | } |
| 450 | break; |
| 451 | } |
| 452 | |
| 453 | /* Check for type of argument. */ |
| 454 | if ((mask & ARGT_MASK) != argp[idx].type) { |
| 455 | const char *msg = lua_pushfstring(L, "'%s' expected, got '%s'", |
| 456 | arg_type_names[(mask & ARGT_MASK)], |
| 457 | arg_type_names[argp[idx].type & ARGT_MASK]); |
| 458 | WILL_LJMP(luaL_argerror(L, first + idx, msg)); |
| 459 | } |
| 460 | |
| 461 | /* Next argument. */ |
| 462 | mask >>= ARGT_BITS; |
| 463 | idx++; |
| 464 | } |
| 465 | } |
| 466 | |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 467 | /* |
| 468 | * The following functions are used to make correspondance between the the |
| 469 | * executed lua pointer and the "struct hlua *" that contain the context. |
| 470 | * They run with the tree head "hlua_ctx", they just perform lookup in the |
| 471 | * tree. |
| 472 | * |
| 473 | * - hlua_gethlua : return the hlua context associated with an lua_State. |
| 474 | * - hlua_delhlua : remove the association between hlua context and lua_state. |
| 475 | * - hlua_sethlua : create the association between hlua context and lua_state. |
| 476 | */ |
| 477 | static inline struct hlua *hlua_gethlua(lua_State *L) |
| 478 | { |
| 479 | struct ebpt_node *node; |
| 480 | |
| 481 | node = ebpt_lookup(&hlua_ctx, L); |
| 482 | if (!node) |
| 483 | return NULL; |
| 484 | return ebpt_entry(node, struct hlua, node); |
| 485 | } |
| 486 | static inline void hlua_delhlua(struct hlua *hlua) |
| 487 | { |
| 488 | if (hlua->node.key) |
| 489 | ebpt_delete(&hlua->node); |
| 490 | } |
| 491 | static inline void hlua_sethlua(struct hlua *hlua) |
| 492 | { |
| 493 | hlua->node.key = hlua->T; |
| 494 | ebpt_insert(&hlua_ctx, &hlua->node); |
| 495 | } |
| 496 | |
| 497 | /* This function initialises the Lua environment stored in the session. |
| 498 | * It must be called at the start of the session. This function creates |
| 499 | * an LUA coroutine. It can not be use to crete the main LUA context. |
| 500 | */ |
| 501 | int hlua_ctx_init(struct hlua *lua, struct task *task) |
| 502 | { |
| 503 | lua->Mref = LUA_REFNIL; |
| 504 | lua->state = HLUA_STOP; |
Thierry FOURNIER | 9ff7e6e | 2015-01-23 11:08:20 +0100 | [diff] [blame] | 505 | LIST_INIT(&lua->com); |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 506 | lua->T = lua_newthread(gL.T); |
| 507 | if (!lua->T) { |
| 508 | lua->Tref = LUA_REFNIL; |
| 509 | return 0; |
| 510 | } |
| 511 | hlua_sethlua(lua); |
| 512 | lua->Tref = luaL_ref(gL.T, LUA_REGISTRYINDEX); |
| 513 | lua->task = task; |
| 514 | return 1; |
| 515 | } |
| 516 | |
| 517 | /* Used to destroy the Lua coroutine when the attached session or task |
| 518 | * is destroyed. The destroy also the memory context. The struct "lua" |
| 519 | * is not freed. |
| 520 | */ |
| 521 | void hlua_ctx_destroy(struct hlua *lua) |
| 522 | { |
| 523 | /* Remove context. */ |
| 524 | hlua_delhlua(lua); |
| 525 | |
Thierry FOURNIER | 9ff7e6e | 2015-01-23 11:08:20 +0100 | [diff] [blame] | 526 | /* Purge all the pending signals. */ |
| 527 | hlua_com_purge(lua); |
| 528 | |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 529 | /* The thread is garbage collected by Lua. */ |
| 530 | luaL_unref(lua->T, LUA_REGISTRYINDEX, lua->Mref); |
| 531 | luaL_unref(gL.T, LUA_REGISTRYINDEX, lua->Tref); |
| 532 | } |
| 533 | |
| 534 | /* This function is used to restore the Lua context when a coroutine |
| 535 | * fails. This function copy the common memory between old coroutine |
| 536 | * and the new coroutine. The old coroutine is destroyed, and its |
| 537 | * replaced by the new coroutine. |
| 538 | * If the flag "keep_msg" is set, the last entry of the old is assumed |
| 539 | * as string error message and it is copied in the new stack. |
| 540 | */ |
| 541 | static int hlua_ctx_renew(struct hlua *lua, int keep_msg) |
| 542 | { |
| 543 | lua_State *T; |
| 544 | int new_ref; |
| 545 | |
| 546 | /* Renew the main LUA stack doesn't have sense. */ |
| 547 | if (lua == &gL) |
| 548 | return 0; |
| 549 | |
| 550 | /* Remove context. */ |
| 551 | hlua_delhlua(lua); |
| 552 | |
| 553 | /* New Lua coroutine. */ |
| 554 | T = lua_newthread(gL.T); |
| 555 | if (!T) |
| 556 | return 0; |
| 557 | |
| 558 | /* Copy last error message. */ |
| 559 | if (keep_msg) |
| 560 | lua_xmove(lua->T, T, 1); |
| 561 | |
| 562 | /* Copy data between the coroutines. */ |
| 563 | lua_rawgeti(lua->T, LUA_REGISTRYINDEX, lua->Mref); |
| 564 | lua_xmove(lua->T, T, 1); |
| 565 | new_ref = luaL_ref(T, LUA_REGISTRYINDEX); /* Valur poped. */ |
| 566 | |
| 567 | /* Destroy old data. */ |
| 568 | luaL_unref(lua->T, LUA_REGISTRYINDEX, lua->Mref); |
| 569 | |
| 570 | /* The thread is garbage collected by Lua. */ |
| 571 | luaL_unref(gL.T, LUA_REGISTRYINDEX, lua->Tref); |
| 572 | |
| 573 | /* Fill the struct with the new coroutine values. */ |
| 574 | lua->Mref = new_ref; |
| 575 | lua->T = T; |
| 576 | lua->Tref = luaL_ref(gL.T, LUA_REGISTRYINDEX); |
| 577 | |
| 578 | /* Set context. */ |
| 579 | hlua_sethlua(lua); |
| 580 | |
| 581 | return 1; |
| 582 | } |
| 583 | |
| 584 | /* This function start or resumes the Lua stack execution. If the flag |
| 585 | * "yield_allowed" if no set and the LUA stack execution returns a yield |
| 586 | * The function return an error. |
| 587 | * |
| 588 | * The function can returns 4 values: |
| 589 | * - HLUA_E_OK : The execution is terminated without any errors. |
| 590 | * - HLUA_E_AGAIN : The execution must continue at the next associated |
| 591 | * task wakeup. |
| 592 | * - HLUA_E_ERRMSG : An error has occured, an error message is set in |
| 593 | * the top of the stack. |
| 594 | * - HLUA_E_ERR : An error has occured without error message. |
| 595 | * |
| 596 | * If an error occured, the stack is renewed and it is ready to run new |
| 597 | * LUA code. |
| 598 | */ |
| 599 | static enum hlua_exec hlua_ctx_resume(struct hlua *lua, int yield_allowed) |
| 600 | { |
| 601 | int ret; |
| 602 | const char *msg; |
| 603 | |
| 604 | lua->state = HLUA_RUN; |
| 605 | |
| 606 | /* Call the function. */ |
| 607 | ret = lua_resume(lua->T, gL.T, lua->nargs); |
| 608 | switch (ret) { |
| 609 | |
| 610 | case LUA_OK: |
| 611 | ret = HLUA_E_OK; |
| 612 | break; |
| 613 | |
| 614 | case LUA_YIELD: |
| 615 | if (!yield_allowed) { |
| 616 | lua_settop(lua->T, 0); /* Empty the stack. */ |
| 617 | if (!lua_checkstack(lua->T, 1)) { |
| 618 | ret = HLUA_E_ERR; |
| 619 | break; |
| 620 | } |
| 621 | lua_pushfstring(lua->T, "yield not allowed"); |
| 622 | ret = HLUA_E_ERRMSG; |
| 623 | break; |
| 624 | } |
| 625 | ret = HLUA_E_AGAIN; |
| 626 | break; |
| 627 | |
| 628 | case LUA_ERRRUN: |
| 629 | if (!lua_checkstack(lua->T, 1)) { |
| 630 | ret = HLUA_E_ERR; |
| 631 | break; |
| 632 | } |
| 633 | msg = lua_tostring(lua->T, -1); |
| 634 | lua_settop(lua->T, 0); /* Empty the stack. */ |
| 635 | lua_pop(lua->T, 1); |
| 636 | if (msg) |
| 637 | lua_pushfstring(lua->T, "runtime error: %s", msg); |
| 638 | else |
| 639 | lua_pushfstring(lua->T, "unknown runtime error"); |
| 640 | ret = HLUA_E_ERRMSG; |
| 641 | break; |
| 642 | |
| 643 | case LUA_ERRMEM: |
| 644 | lua_settop(lua->T, 0); /* Empty the stack. */ |
| 645 | if (!lua_checkstack(lua->T, 1)) { |
| 646 | ret = HLUA_E_ERR; |
| 647 | break; |
| 648 | } |
| 649 | lua_pushfstring(lua->T, "out of memory error"); |
| 650 | ret = HLUA_E_ERRMSG; |
| 651 | break; |
| 652 | |
| 653 | case LUA_ERRERR: |
| 654 | if (!lua_checkstack(lua->T, 1)) { |
| 655 | ret = HLUA_E_ERR; |
| 656 | break; |
| 657 | } |
| 658 | msg = lua_tostring(lua->T, -1); |
| 659 | lua_settop(lua->T, 0); /* Empty the stack. */ |
| 660 | lua_pop(lua->T, 1); |
| 661 | if (msg) |
| 662 | lua_pushfstring(lua->T, "message handler error: %s", msg); |
| 663 | else |
| 664 | lua_pushfstring(lua->T, "message handler error"); |
| 665 | ret = HLUA_E_ERRMSG; |
| 666 | break; |
| 667 | |
| 668 | default: |
| 669 | lua_settop(lua->T, 0); /* Empty the stack. */ |
| 670 | if (!lua_checkstack(lua->T, 1)) { |
| 671 | ret = HLUA_E_ERR; |
| 672 | break; |
| 673 | } |
| 674 | lua_pushfstring(lua->T, "unknonwn error"); |
| 675 | ret = HLUA_E_ERRMSG; |
| 676 | break; |
| 677 | } |
| 678 | |
| 679 | switch (ret) { |
| 680 | case HLUA_E_AGAIN: |
| 681 | break; |
| 682 | |
| 683 | case HLUA_E_ERRMSG: |
Thierry FOURNIER | 9ff7e6e | 2015-01-23 11:08:20 +0100 | [diff] [blame] | 684 | hlua_com_purge(lua); |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 685 | hlua_ctx_renew(lua, 1); |
| 686 | lua->state = HLUA_STOP; |
| 687 | break; |
| 688 | |
| 689 | case HLUA_E_ERR: |
| 690 | lua->state = HLUA_STOP; |
Thierry FOURNIER | 9ff7e6e | 2015-01-23 11:08:20 +0100 | [diff] [blame] | 691 | hlua_com_purge(lua); |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 692 | hlua_ctx_renew(lua, 0); |
| 693 | break; |
| 694 | |
| 695 | case HLUA_E_OK: |
| 696 | lua->state = HLUA_STOP; |
Thierry FOURNIER | 9ff7e6e | 2015-01-23 11:08:20 +0100 | [diff] [blame] | 697 | hlua_com_purge(lua); |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 698 | break; |
| 699 | } |
| 700 | |
| 701 | return ret; |
| 702 | } |
| 703 | |
Thierry FOURNIER | 65f34c6 | 2015-02-16 20:11:43 +0100 | [diff] [blame] | 704 | /* A class is a lot of memory that contain data. This data can be a table, |
| 705 | * an integer or user data. This data is associated with a metatable. This |
| 706 | * metatable have an original version registred in the global context with |
| 707 | * the name of the object (_G[<name>] = <metable> ). |
| 708 | * |
| 709 | * A metable is a table that modify the standard behavior of a standard |
| 710 | * access to the associated data. The entries of this new metatable are |
| 711 | * defined as is: |
| 712 | * |
| 713 | * http://lua-users.org/wiki/MetatableEvents |
| 714 | * |
| 715 | * __index |
| 716 | * |
| 717 | * we access an absent field in a table, the result is nil. This is |
| 718 | * true, but it is not the whole truth. Actually, such access triggers |
| 719 | * the interpreter to look for an __index metamethod: If there is no |
| 720 | * such method, as usually happens, then the access results in nil; |
| 721 | * otherwise, the metamethod will provide the result. |
| 722 | * |
| 723 | * Control 'prototype' inheritance. When accessing "myTable[key]" and |
| 724 | * the key does not appear in the table, but the metatable has an __index |
| 725 | * property: |
| 726 | * |
| 727 | * - if the value is a function, the function is called, passing in the |
| 728 | * table and the key; the return value of that function is returned as |
| 729 | * the result. |
| 730 | * |
| 731 | * - if the value is another table, the value of the key in that table is |
| 732 | * asked for and returned (and if it doesn't exist in that table, but that |
| 733 | * table's metatable has an __index property, then it continues on up) |
| 734 | * |
| 735 | * - Use "rawget(myTable,key)" to skip this metamethod. |
| 736 | * |
| 737 | * http://www.lua.org/pil/13.4.1.html |
| 738 | * |
| 739 | * __newindex |
| 740 | * |
| 741 | * Like __index, but control property assignment. |
| 742 | * |
| 743 | * __mode - Control weak references. A string value with one or both |
| 744 | * of the characters 'k' and 'v' which specifies that the the |
| 745 | * keys and/or values in the table are weak references. |
| 746 | * |
| 747 | * __call - Treat a table like a function. When a table is followed by |
| 748 | * parenthesis such as "myTable( 'foo' )" and the metatable has |
| 749 | * a __call key pointing to a function, that function is invoked |
| 750 | * (passing any specified arguments) and the return value is |
| 751 | * returned. |
| 752 | * |
| 753 | * __metatable - Hide the metatable. When "getmetatable( myTable )" is |
| 754 | * called, if the metatable for myTable has a __metatable |
| 755 | * key, the value of that key is returned instead of the |
| 756 | * actual metatable. |
| 757 | * |
| 758 | * __tostring - Control string representation. When the builtin |
| 759 | * "tostring( myTable )" function is called, if the metatable |
| 760 | * for myTable has a __tostring property set to a function, |
| 761 | * that function is invoked (passing myTable to it) and the |
| 762 | * return value is used as the string representation. |
| 763 | * |
| 764 | * __len - Control table length. When the table length is requested using |
| 765 | * the length operator ( '#' ), if the metatable for myTable has |
| 766 | * a __len key pointing to a function, that function is invoked |
| 767 | * (passing myTable to it) and the return value used as the value |
| 768 | * of "#myTable". |
| 769 | * |
| 770 | * __gc - Userdata finalizer code. When userdata is set to be garbage |
| 771 | * collected, if the metatable has a __gc field pointing to a |
| 772 | * function, that function is first invoked, passing the userdata |
| 773 | * to it. The __gc metamethod is not called for tables. |
| 774 | * (See http://lua-users.org/lists/lua-l/2006-11/msg00508.html) |
| 775 | * |
| 776 | * Special metamethods for redefining standard operators: |
| 777 | * http://www.lua.org/pil/13.1.html |
| 778 | * |
| 779 | * __add "+" |
| 780 | * __sub "-" |
| 781 | * __mul "*" |
| 782 | * __div "/" |
| 783 | * __unm "!" |
| 784 | * __pow "^" |
| 785 | * __concat ".." |
| 786 | * |
| 787 | * Special methods for redfining standar relations |
| 788 | * http://www.lua.org/pil/13.2.html |
| 789 | * |
| 790 | * __eq "==" |
| 791 | * __lt "<" |
| 792 | * __le "<=" |
| 793 | */ |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame^] | 794 | |
| 795 | /* |
| 796 | * |
| 797 | * |
| 798 | * Class Socket |
| 799 | * |
| 800 | * |
| 801 | */ |
| 802 | |
| 803 | __LJMP static struct hlua_socket *hlua_checksocket(lua_State *L, int ud) |
| 804 | { |
| 805 | return (struct hlua_socket *)MAY_LJMP(hlua_checkudata(L, ud, class_socket_ref)); |
| 806 | } |
| 807 | |
| 808 | /* This function is the handler called for each I/O on the established |
| 809 | * connection. It is used for notify space avalaible to send or data |
| 810 | * received. |
| 811 | */ |
| 812 | static void hlua_socket_handler(struct stream_interface *si) |
| 813 | { |
| 814 | struct appctx *appctx = objt_appctx(si->end); |
| 815 | struct connection *c = objt_conn(si->ib->cons->end); |
| 816 | |
| 817 | /* Wakeup the main session if the client connection is closed. */ |
| 818 | if (!c || channel_output_closed(si->ib) || channel_input_closed(si->ob)) { |
| 819 | if (appctx->ctx.hlua.socket) { |
| 820 | appctx->ctx.hlua.socket->s = NULL; |
| 821 | appctx->ctx.hlua.socket = NULL; |
| 822 | } |
| 823 | si_shutw(si); |
| 824 | si_shutr(si); |
| 825 | si->ib->flags |= CF_READ_NULL; |
| 826 | hlua_com_wake(&appctx->ctx.hlua.wake_on_read); |
| 827 | hlua_com_wake(&appctx->ctx.hlua.wake_on_write); |
| 828 | return; |
| 829 | } |
| 830 | |
| 831 | if (!(c->flags & CO_FL_CONNECTED)) |
| 832 | return; |
| 833 | |
| 834 | /* This function is called after the connect. */ |
| 835 | appctx->ctx.hlua.connected = 1; |
| 836 | |
| 837 | /* Wake the tasks which wants to write if the buffer have avalaible space. */ |
| 838 | if (channel_may_recv(si->ob)) |
| 839 | hlua_com_wake(&appctx->ctx.hlua.wake_on_write); |
| 840 | |
| 841 | /* Wake the tasks which wants to read if the buffer contains data. */ |
| 842 | if (channel_is_empty(si->ib)) |
| 843 | hlua_com_wake(&appctx->ctx.hlua.wake_on_read); |
| 844 | } |
| 845 | |
| 846 | /* This function is called when the "struct session" is destroyed. |
| 847 | * Remove the link from the object to this session. |
| 848 | * Wake all the pending signals. |
| 849 | */ |
| 850 | static void hlua_socket_release(struct stream_interface *si) |
| 851 | { |
| 852 | struct appctx *appctx = objt_appctx(si->end); |
| 853 | |
| 854 | /* Remove my link in the original object. */ |
| 855 | if (appctx->ctx.hlua.socket) |
| 856 | appctx->ctx.hlua.socket->s = NULL; |
| 857 | |
| 858 | /* Wake all the task waiting for me. */ |
| 859 | hlua_com_wake(&appctx->ctx.hlua.wake_on_read); |
| 860 | hlua_com_wake(&appctx->ctx.hlua.wake_on_write); |
| 861 | } |
| 862 | |
| 863 | /* If the garbage collectio of the object is launch, nobody |
| 864 | * uses this object. If the session does not exists, just quit. |
| 865 | * Send the shutdown signal to the session. In some cases, |
| 866 | * pending signal can rest in the read and write lists. destroy |
| 867 | * it. |
| 868 | */ |
| 869 | __LJMP static int hlua_socket_gc(lua_State *L) |
| 870 | { |
| 871 | MAY_LJMP(check_args(L, 1, "__gc")); |
| 872 | |
| 873 | struct hlua_socket *socket = MAY_LJMP(hlua_checksocket(L, 1)); |
| 874 | struct appctx *appctx; |
| 875 | |
| 876 | if (!socket->s) |
| 877 | return 0; |
| 878 | |
| 879 | /* Remove all reference between the Lua stack and the coroutine session. */ |
| 880 | appctx = objt_appctx(socket->s->si[0].end); |
| 881 | session_shutdown(socket->s, SN_ERR_KILLED); |
| 882 | socket->s = NULL; |
| 883 | appctx->ctx.hlua.socket = NULL; |
| 884 | |
| 885 | return 0; |
| 886 | } |
| 887 | |
| 888 | /* The close function send shutdown signal and break the |
| 889 | * links between the session and the object. |
| 890 | */ |
| 891 | __LJMP static int hlua_socket_close(lua_State *L) |
| 892 | { |
| 893 | MAY_LJMP(check_args(L, 1, "close")); |
| 894 | |
| 895 | struct hlua_socket *socket = MAY_LJMP(hlua_checksocket(L, 1)); |
| 896 | struct appctx *appctx; |
| 897 | |
| 898 | if (!socket->s) |
| 899 | return 0; |
| 900 | |
| 901 | /* Close the session and remove the associated stop task. */ |
| 902 | session_shutdown(socket->s, SN_ERR_KILLED); |
| 903 | appctx = objt_appctx(socket->s->si[0].end); |
| 904 | appctx->ctx.hlua.socket = NULL; |
| 905 | socket->s = NULL; |
| 906 | |
| 907 | return 0; |
| 908 | } |
| 909 | |
| 910 | /* This Lua function assumes that the stack contain three parameters. |
| 911 | * 1 - USERDATA containing a struct socket |
| 912 | * 2 - INTEGER with values of the macro defined below |
| 913 | * If the integer is -1, we must read at most one line. |
| 914 | * If the integer is -2, we ust read all the data until the |
| 915 | * end of the stream. |
| 916 | * If the integer is positive value, we must read a number of |
| 917 | * bytes corresponding to this value. |
| 918 | */ |
| 919 | #define HLSR_READ_LINE (-1) |
| 920 | #define HLSR_READ_ALL (-2) |
| 921 | __LJMP static int hlua_socket_receive_yield(struct lua_State *L) |
| 922 | { |
| 923 | struct hlua_socket *socket = MAY_LJMP(hlua_checksocket(L, 1)); |
| 924 | int wanted = lua_tointeger(L, 2); |
| 925 | struct hlua *hlua = hlua_gethlua(L); |
| 926 | struct appctx *appctx; |
| 927 | int len; |
| 928 | int nblk; |
| 929 | char *blk1; |
| 930 | int len1; |
| 931 | char *blk2; |
| 932 | int len2; |
| 933 | |
| 934 | /* Check if this lua stack is schedulable. */ |
| 935 | if (!hlua || !hlua->task) |
| 936 | WILL_LJMP(luaL_error(L, "The 'receive' function is only allowed in " |
| 937 | "'frontend', 'backend' or 'task'")); |
| 938 | |
| 939 | /* check for connection closed. If some data where read, return it. */ |
| 940 | if (!socket->s) |
| 941 | goto connection_closed; |
| 942 | |
| 943 | if (wanted == HLSR_READ_LINE) { |
| 944 | |
| 945 | /* Read line. */ |
| 946 | nblk = bo_getline_nc(socket->s->si[0].ob, &blk1, &len1, &blk2, &len2); |
| 947 | if (nblk < 0) /* Connection close. */ |
| 948 | goto connection_closed; |
| 949 | if (nblk == 0) /* No data avalaible. */ |
| 950 | goto connection_empty; |
| 951 | } |
| 952 | |
| 953 | else if (wanted == HLSR_READ_ALL) { |
| 954 | |
| 955 | /* Read all the available data. */ |
| 956 | nblk = bo_getblk_nc(socket->s->si[0].ob, &blk1, &len1, &blk2, &len2); |
| 957 | if (nblk < 0) /* Connection close. */ |
| 958 | goto connection_closed; |
| 959 | if (nblk == 0) /* No data avalaible. */ |
| 960 | goto connection_empty; |
| 961 | } |
| 962 | |
| 963 | else { |
| 964 | |
| 965 | /* Read a block of data. */ |
| 966 | nblk = bo_getblk_nc(socket->s->si[0].ob, &blk1, &len1, &blk2, &len2); |
| 967 | if (nblk < 0) /* Connection close. */ |
| 968 | goto connection_closed; |
| 969 | if (nblk == 0) /* No data avalaible. */ |
| 970 | goto connection_empty; |
| 971 | |
| 972 | if (len1 > wanted) { |
| 973 | nblk = 1; |
| 974 | len1 = wanted; |
| 975 | } if (nblk == 2 && len1 + len2 > wanted) |
| 976 | len2 = wanted - len1; |
| 977 | } |
| 978 | |
| 979 | len = len1; |
| 980 | |
| 981 | luaL_addlstring(&socket->b, blk1, len1); |
| 982 | if (nblk == 2) { |
| 983 | len += len2; |
| 984 | luaL_addlstring(&socket->b, blk2, len2); |
| 985 | } |
| 986 | |
| 987 | /* Consume data. */ |
| 988 | bo_skip(socket->s->si[0].ob, len); |
| 989 | |
| 990 | /* Don't wait anything. */ |
| 991 | si_update(&socket->s->si[0]); |
| 992 | |
| 993 | /* If the pattern reclaim to read all the data |
| 994 | * in the connection, got out. |
| 995 | */ |
| 996 | if (wanted == HLSR_READ_ALL) |
| 997 | goto connection_empty; |
| 998 | else if (wanted >= 0 && len < wanted) |
| 999 | goto connection_empty; |
| 1000 | |
| 1001 | /* Return result. */ |
| 1002 | luaL_pushresult(&socket->b); |
| 1003 | return 1; |
| 1004 | |
| 1005 | connection_closed: |
| 1006 | |
| 1007 | /* If the buffer containds data. */ |
| 1008 | if (socket->b.n > 0) { |
| 1009 | luaL_pushresult(&socket->b); |
| 1010 | return 1; |
| 1011 | } |
| 1012 | lua_pushnil(L); |
| 1013 | lua_pushstring(L, "connection closed."); |
| 1014 | return 2; |
| 1015 | |
| 1016 | connection_empty: |
| 1017 | |
| 1018 | appctx = objt_appctx(socket->s->si[0].end); |
| 1019 | if (!hlua_com_new(hlua, &appctx->ctx.hlua.wake_on_read)) |
| 1020 | WILL_LJMP(luaL_error(L, "out of memory")); |
| 1021 | WILL_LJMP(lua_yieldk(L, 0, 0, hlua_socket_receive_yield)); |
| 1022 | return 0; |
| 1023 | } |
| 1024 | |
| 1025 | /* This Lus function gets two parameters. The first one can be string |
| 1026 | * or a number. If the string is "*l", the user require one line. If |
| 1027 | * the string is "*a", the user require all the content of the stream. |
| 1028 | * If the value is a number, the user require a number of bytes equal |
| 1029 | * to the value. The default value is "*l" (a line). |
| 1030 | * |
| 1031 | * This paraeter with a variable type is converted in integer. This |
| 1032 | * integer takes this values: |
| 1033 | * -1 : read a line |
| 1034 | * -2 : read all the stream |
| 1035 | * >0 : amount if bytes. |
| 1036 | * |
| 1037 | * The second parameter is optinal. It contains a string that must be |
| 1038 | * concatenated with the read data. |
| 1039 | */ |
| 1040 | __LJMP static int hlua_socket_receive(struct lua_State *L) |
| 1041 | { |
| 1042 | int wanted = HLSR_READ_LINE; |
| 1043 | const char *pattern; |
| 1044 | int type; |
| 1045 | char *error; |
| 1046 | size_t len; |
| 1047 | |
| 1048 | if (lua_gettop(L) < 1 || lua_gettop(L) > 3) |
| 1049 | WILL_LJMP(luaL_error(L, "The 'receive' function requires between 1 and 3 arguments.")); |
| 1050 | |
| 1051 | struct hlua_socket *socket = MAY_LJMP(hlua_checksocket(L, 1)); |
| 1052 | |
| 1053 | /* check for pattern. */ |
| 1054 | if (lua_gettop(L) >= 2) { |
| 1055 | type = lua_type(L, 2); |
| 1056 | if (type == LUA_TSTRING) { |
| 1057 | pattern = lua_tostring(L, 2); |
| 1058 | if (strcmp(pattern, "*a") == 0) |
| 1059 | wanted = HLSR_READ_ALL; |
| 1060 | else if (strcmp(pattern, "*l") == 0) |
| 1061 | wanted = HLSR_READ_LINE; |
| 1062 | else { |
| 1063 | wanted = strtoll(pattern, &error, 10); |
| 1064 | if (*error != '\0') |
| 1065 | WILL_LJMP(luaL_error(L, "Unsupported pattern.")); |
| 1066 | } |
| 1067 | } |
| 1068 | else if (type == LUA_TNUMBER) { |
| 1069 | wanted = lua_tointeger(L, 2); |
| 1070 | if (wanted < 0) |
| 1071 | WILL_LJMP(luaL_error(L, "Unsupported size.")); |
| 1072 | } |
| 1073 | } |
| 1074 | |
| 1075 | /* Set pattern. */ |
| 1076 | lua_pushinteger(L, wanted); |
| 1077 | lua_replace(L, 2); |
| 1078 | |
| 1079 | /* init bufffer, and fiil it wih prefix. */ |
| 1080 | luaL_buffinit(L, &socket->b); |
| 1081 | |
| 1082 | /* Check prefix. */ |
| 1083 | if (lua_gettop(L) >= 3) { |
| 1084 | if (lua_type(L, 3) != LUA_TSTRING) |
| 1085 | WILL_LJMP(luaL_error(L, "Expect a 'string' for the prefix")); |
| 1086 | pattern = lua_tolstring(L, 3, &len); |
| 1087 | luaL_addlstring(&socket->b, pattern, len); |
| 1088 | } |
| 1089 | |
| 1090 | return __LJMP(hlua_socket_receive_yield(L)); |
| 1091 | } |
| 1092 | |
| 1093 | /* Write the Lua input string in the output buffer. |
| 1094 | * This fucntion returns a yield if no space are available. |
| 1095 | */ |
| 1096 | static int hlua_socket_write_yield(struct lua_State *L) |
| 1097 | { |
| 1098 | struct hlua_socket *socket; |
| 1099 | struct hlua *hlua = hlua_gethlua(L); |
| 1100 | struct appctx *appctx; |
| 1101 | size_t buf_len; |
| 1102 | const char *buf; |
| 1103 | int len; |
| 1104 | int send_len; |
| 1105 | int sent; |
| 1106 | |
| 1107 | /* Check if this lua stack is schedulable. */ |
| 1108 | if (!hlua || !hlua->task) |
| 1109 | WILL_LJMP(luaL_error(L, "The 'write' function is only allowed in " |
| 1110 | "'frontend', 'backend' or 'task'")); |
| 1111 | |
| 1112 | /* Get object */ |
| 1113 | socket = MAY_LJMP(hlua_checksocket(L, 1)); |
| 1114 | buf = MAY_LJMP(luaL_checklstring(L, 2, &buf_len)); |
| 1115 | sent = MAY_LJMP(luaL_checkunsigned(L, 3)); |
| 1116 | |
| 1117 | /* Check for connection close. */ |
| 1118 | if (!socket->s || channel_output_closed(socket->s->req)) { |
| 1119 | lua_pushinteger(L, -1); |
| 1120 | return 1; |
| 1121 | } |
| 1122 | |
| 1123 | /* Update the input buffer data. */ |
| 1124 | buf += sent; |
| 1125 | send_len = buf_len - sent; |
| 1126 | |
| 1127 | /* All the data are sent. */ |
| 1128 | if (sent >= buf_len) |
| 1129 | return 1; /* Implicitly return the length sent. */ |
| 1130 | |
| 1131 | /* Check for avalaible space. */ |
| 1132 | len = buffer_total_space(socket->s->si[0].ib->buf); |
| 1133 | if (len <= 0) |
| 1134 | goto hlua_socket_write_yield_return; |
| 1135 | |
| 1136 | /* send data */ |
| 1137 | if (len < send_len) |
| 1138 | send_len = len; |
| 1139 | len = bi_putblk(socket->s->si[0].ib, buf+sent, send_len); |
| 1140 | |
| 1141 | /* "Not enough space" (-1), "Buffer too little to contain |
| 1142 | * the data" (-2) are not expected because the available length |
| 1143 | * is tested. |
| 1144 | * Other unknown error are also not expected. |
| 1145 | */ |
| 1146 | if (len <= 0) { |
| 1147 | MAY_LJMP(hlua_socket_close(L)); |
| 1148 | lua_pop(L, 1); |
| 1149 | lua_pushunsigned(L, -1); |
| 1150 | return 1; |
| 1151 | } |
| 1152 | |
| 1153 | /* update buffers. */ |
| 1154 | si_update(&socket->s->si[0]); |
| 1155 | socket->s->si[0].ib->rex = TICK_ETERNITY; |
| 1156 | socket->s->si[0].ob->wex = TICK_ETERNITY; |
| 1157 | |
| 1158 | /* Update length sent. */ |
| 1159 | lua_pop(L, 1); |
| 1160 | lua_pushunsigned(L, sent + len); |
| 1161 | |
| 1162 | /* All the data buffer is sent ? */ |
| 1163 | if (sent + len >= buf_len) |
| 1164 | return 1; |
| 1165 | |
| 1166 | hlua_socket_write_yield_return: |
| 1167 | appctx = objt_appctx(socket->s->si[0].end); |
| 1168 | if (!hlua_com_new(hlua, &appctx->ctx.hlua.wake_on_write)) |
| 1169 | WILL_LJMP(luaL_error(L, "out of memory")); |
| 1170 | WILL_LJMP(lua_yieldk(L, 0, 0, hlua_socket_write_yield)); |
| 1171 | return 0; |
| 1172 | } |
| 1173 | |
| 1174 | /* This function initiate the send of data. It just check the input |
| 1175 | * parameters and push an integer in the Lua stack that contain the |
| 1176 | * amount of data writed in the buffer. This is used by the function |
| 1177 | * "hlua_socket_write_yield" that can yield. |
| 1178 | * |
| 1179 | * The Lua function gets between 3 and 4 parameters. The first one is |
| 1180 | * the associated object. The second is a string buffer. The third is |
| 1181 | * a facultative integer that represents where is the buffer position |
| 1182 | * of the start of the data that can send. The first byte is the |
| 1183 | * position "1". The default value is "1". The fourth argument is a |
| 1184 | * facultative integer that represents where is the buffer position |
| 1185 | * of the end of the data that can send. The default is the last byte. |
| 1186 | */ |
| 1187 | static int hlua_socket_send(struct lua_State *L) |
| 1188 | { |
| 1189 | int i; |
| 1190 | int j; |
| 1191 | const char *buf; |
| 1192 | size_t buf_len; |
| 1193 | |
| 1194 | /* Check number of arguments. */ |
| 1195 | if (lua_gettop(L) < 2 || lua_gettop(L) > 4) |
| 1196 | WILL_LJMP(luaL_error(L, "'send' needs between 2 and 4 arguments")); |
| 1197 | |
| 1198 | /* Get the string. */ |
| 1199 | buf = MAY_LJMP(luaL_checklstring(L, 2, &buf_len)); |
| 1200 | |
| 1201 | /* Get and check j. */ |
| 1202 | if (lua_gettop(L) == 4) { |
| 1203 | j = MAY_LJMP(luaL_checkinteger(L, 4)); |
| 1204 | if (j < 0) |
| 1205 | j = buf_len + j + 1; |
| 1206 | if (j > buf_len) |
| 1207 | j = buf_len + 1; |
| 1208 | lua_pop(L, 1); |
| 1209 | } |
| 1210 | else |
| 1211 | j = buf_len; |
| 1212 | |
| 1213 | /* Get and check i. */ |
| 1214 | if (lua_gettop(L) == 3) { |
| 1215 | i = MAY_LJMP(luaL_checkinteger(L, 3)); |
| 1216 | if (i < 0) |
| 1217 | i = buf_len + i + 1; |
| 1218 | if (i > buf_len) |
| 1219 | i = buf_len + 1; |
| 1220 | lua_pop(L, 1); |
| 1221 | } else |
| 1222 | i = 1; |
| 1223 | |
| 1224 | /* Check bth i and j. */ |
| 1225 | if (i > j) { |
| 1226 | lua_pushunsigned(L, 0); |
| 1227 | return 1; |
| 1228 | } |
| 1229 | if (i == 0 && j == 0) { |
| 1230 | lua_pushunsigned(L, 0); |
| 1231 | return 1; |
| 1232 | } |
| 1233 | if (i == 0) |
| 1234 | i = 1; |
| 1235 | if (j == 0) |
| 1236 | j = 1; |
| 1237 | |
| 1238 | /* Pop the string. */ |
| 1239 | lua_pop(L, 1); |
| 1240 | |
| 1241 | /* Update the buffer length. */ |
| 1242 | buf += i - 1; |
| 1243 | buf_len = j - i + 1; |
| 1244 | lua_pushlstring(L, buf, buf_len); |
| 1245 | |
| 1246 | /* This unsigned is used to remember the amount of sent data. */ |
| 1247 | lua_pushunsigned(L, 0); |
| 1248 | |
| 1249 | return MAY_LJMP(hlua_socket_write_yield(L)); |
| 1250 | } |
| 1251 | |
| 1252 | #define SOCKET_INFO_EXPANDED_FORM "[0000:0000:0000:0000:0000:0000:0000:0000]:12345" |
| 1253 | static char _socket_info_expanded_form[] = SOCKET_INFO_EXPANDED_FORM; |
| 1254 | #define SOCKET_INFO_MAX_LEN (sizeof(_socket_info_expanded_form)) |
| 1255 | __LJMP static inline int hlua_socket_info(struct lua_State *L, struct sockaddr_storage *addr) |
| 1256 | { |
| 1257 | static char buffer[SOCKET_INFO_MAX_LEN]; |
| 1258 | int ret; |
| 1259 | int len; |
| 1260 | char *p; |
| 1261 | |
| 1262 | ret = addr_to_str(addr, buffer+1, SOCKET_INFO_MAX_LEN-1); |
| 1263 | if (ret <= 0) { |
| 1264 | lua_pushnil(L); |
| 1265 | return 1; |
| 1266 | } |
| 1267 | |
| 1268 | if (ret == AF_UNIX) { |
| 1269 | lua_pushstring(L, buffer+1); |
| 1270 | return 1; |
| 1271 | } |
| 1272 | else if (ret == AF_INET6) { |
| 1273 | buffer[0] = '['; |
| 1274 | len = strlen(buffer); |
| 1275 | buffer[len] = ']'; |
| 1276 | len++; |
| 1277 | buffer[len] = ':'; |
| 1278 | len++; |
| 1279 | p = buffer; |
| 1280 | } |
| 1281 | else if (ret == AF_INET) { |
| 1282 | p = buffer + 1; |
| 1283 | len = strlen(p); |
| 1284 | p[len] = ':'; |
| 1285 | len++; |
| 1286 | } |
| 1287 | else { |
| 1288 | lua_pushnil(L); |
| 1289 | return 1; |
| 1290 | } |
| 1291 | |
| 1292 | if (port_to_str(addr, p + len, SOCKET_INFO_MAX_LEN-1 - len) <= 0) { |
| 1293 | lua_pushnil(L); |
| 1294 | return 1; |
| 1295 | } |
| 1296 | |
| 1297 | lua_pushstring(L, p); |
| 1298 | return 1; |
| 1299 | } |
| 1300 | |
| 1301 | /* Returns information about the peer of the connection. */ |
| 1302 | __LJMP static int hlua_socket_getpeername(struct lua_State *L) |
| 1303 | { |
| 1304 | MAY_LJMP(check_args(L, 1, "getpeername")); |
| 1305 | |
| 1306 | struct hlua_socket *socket = MAY_LJMP(hlua_checksocket(L, 1)); |
| 1307 | |
| 1308 | /* Check if the tcp object is avalaible. */ |
| 1309 | if (!socket->s) { |
| 1310 | lua_pushnil(L); |
| 1311 | return 1; |
| 1312 | } |
| 1313 | |
| 1314 | struct connection *conn = objt_conn(socket->s->si[1].end); |
| 1315 | if (!conn) { |
| 1316 | lua_pushnil(L); |
| 1317 | return 1; |
| 1318 | } |
| 1319 | |
| 1320 | if (!(conn->flags & CO_FL_ADDR_TO_SET)) { |
| 1321 | unsigned int salen = sizeof(conn->addr.to); |
| 1322 | if (getpeername(conn->t.sock.fd, (struct sockaddr *)&conn->addr.to, &salen) == -1) { |
| 1323 | lua_pushnil(L); |
| 1324 | return 1; |
| 1325 | } |
| 1326 | conn->flags |= CO_FL_ADDR_TO_SET; |
| 1327 | } |
| 1328 | |
| 1329 | return MAY_LJMP(hlua_socket_info(L, &conn->addr.to)); |
| 1330 | } |
| 1331 | |
| 1332 | /* Returns information about my connection side. */ |
| 1333 | static int hlua_socket_getsockname(struct lua_State *L) |
| 1334 | { |
| 1335 | MAY_LJMP(check_args(L, 1, "getsockname")); |
| 1336 | |
| 1337 | struct hlua_socket *socket = MAY_LJMP(hlua_checksocket(L, 1)); |
| 1338 | |
| 1339 | /* Check if the tcp object is avalaible. */ |
| 1340 | if (!socket->s) { |
| 1341 | lua_pushnil(L); |
| 1342 | return 1; |
| 1343 | } |
| 1344 | |
| 1345 | struct connection *conn = objt_conn(socket->s->si[1].end); |
| 1346 | if (!conn) { |
| 1347 | lua_pushnil(L); |
| 1348 | return 1; |
| 1349 | } |
| 1350 | |
| 1351 | if (!(conn->flags & CO_FL_ADDR_FROM_SET)) { |
| 1352 | unsigned int salen = sizeof(conn->addr.from); |
| 1353 | if (getsockname(conn->t.sock.fd, (struct sockaddr *)&conn->addr.from, &salen) == -1) { |
| 1354 | lua_pushnil(L); |
| 1355 | return 1; |
| 1356 | } |
| 1357 | conn->flags |= CO_FL_ADDR_FROM_SET; |
| 1358 | } |
| 1359 | |
| 1360 | return hlua_socket_info(L, &conn->addr.from); |
| 1361 | } |
| 1362 | |
| 1363 | /* This struct define the applet. */ |
| 1364 | static struct si_applet update_applet = { |
| 1365 | .obj_type = OBJ_TYPE_APPLET, |
| 1366 | .name = "<LUA_TCP>", |
| 1367 | .fct = hlua_socket_handler, |
| 1368 | .release = hlua_socket_release, |
| 1369 | }; |
| 1370 | |
| 1371 | __LJMP static int hlua_socket_connect_yield(struct lua_State *L) |
| 1372 | { |
| 1373 | struct hlua_socket *socket = MAY_LJMP(hlua_checksocket(L, 1)); |
| 1374 | struct hlua *hlua = hlua_gethlua(L); |
| 1375 | struct appctx *appctx; |
| 1376 | |
| 1377 | /* Check for connection close. */ |
| 1378 | if (!hlua || !socket->s || channel_output_closed(socket->s->req)) { |
| 1379 | lua_pushnil(L); |
| 1380 | lua_pushstring(L, "Can't connect"); |
| 1381 | return 2; |
| 1382 | } |
| 1383 | |
| 1384 | appctx = objt_appctx(socket->s->si[0].end); |
| 1385 | |
| 1386 | /* Check for connection established. */ |
| 1387 | if (appctx->ctx.hlua.connected) { |
| 1388 | lua_pushinteger(L, 1); |
| 1389 | return 1; |
| 1390 | } |
| 1391 | |
| 1392 | if (!hlua_com_new(hlua, &appctx->ctx.hlua.wake_on_write)) |
| 1393 | WILL_LJMP(luaL_error(L, "out of memory error")); |
| 1394 | WILL_LJMP(lua_yieldk(L, 0, 0, hlua_socket_connect_yield)); |
| 1395 | return 0; |
| 1396 | } |
| 1397 | |
| 1398 | /* This function fail or initite the connection. */ |
| 1399 | __LJMP static int hlua_socket_connect(struct lua_State *L) |
| 1400 | { |
| 1401 | struct hlua_socket *socket; |
| 1402 | unsigned int port; |
| 1403 | const char *ip; |
| 1404 | struct connection *conn; |
| 1405 | |
| 1406 | MAY_LJMP(check_args(L, 3, "connect")); |
| 1407 | |
| 1408 | /* Get args. */ |
| 1409 | socket = MAY_LJMP(hlua_checksocket(L, 1)); |
| 1410 | ip = MAY_LJMP(luaL_checkstring(L, 2)); |
| 1411 | port = MAY_LJMP(luaL_checkunsigned(L, 3)); |
| 1412 | |
| 1413 | conn = si_alloc_conn(socket->s->req->cons, 0); |
| 1414 | if (!conn) |
| 1415 | WILL_LJMP(luaL_error(L, "connect: internal error")); |
| 1416 | |
| 1417 | /* Parse ip address. */ |
| 1418 | conn->addr.to.ss_family = AF_UNSPEC; |
| 1419 | if (!str2ip2(ip, &conn->addr.to, 0)) |
| 1420 | WILL_LJMP(luaL_error(L, "connect: cannot parse ip address '%s'", ip)); |
| 1421 | |
| 1422 | /* Set port. */ |
| 1423 | if (conn->addr.to.ss_family == AF_INET) |
| 1424 | ((struct sockaddr_in *)&conn->addr.to)->sin_port = htons(port); |
| 1425 | else if (conn->addr.to.ss_family == AF_INET6) |
| 1426 | ((struct sockaddr_in6 *)&conn->addr.to)->sin6_port = htons(port); |
| 1427 | |
| 1428 | /* it is important not to call the wakeup function directly but to |
| 1429 | * pass through task_wakeup(), because this one knows how to apply |
| 1430 | * priorities to tasks. |
| 1431 | */ |
| 1432 | task_wakeup(socket->s->task, TASK_WOKEN_INIT); |
| 1433 | |
| 1434 | WILL_LJMP(lua_yieldk(L, 0, 0, hlua_socket_connect_yield)); |
| 1435 | |
| 1436 | return 0; |
| 1437 | } |
| 1438 | |
| 1439 | __LJMP static int hlua_socket_connect_ssl(struct lua_State *L) |
| 1440 | { |
| 1441 | struct hlua_socket *socket; |
| 1442 | |
| 1443 | MAY_LJMP(check_args(L, 3, "connect_ssl")); |
| 1444 | socket = MAY_LJMP(hlua_checksocket(L, 1)); |
| 1445 | socket->s->target = &socket_ssl.obj_type; |
| 1446 | return MAY_LJMP(hlua_socket_connect(L)); |
| 1447 | } |
| 1448 | |
| 1449 | __LJMP static int hlua_socket_setoption(struct lua_State *L) |
| 1450 | { |
| 1451 | return 0; |
| 1452 | } |
| 1453 | |
| 1454 | __LJMP static int hlua_socket_settimeout(struct lua_State *L) |
| 1455 | { |
| 1456 | MAY_LJMP(check_args(L, 2, "settimeout")); |
| 1457 | |
| 1458 | struct hlua_socket *socket = MAY_LJMP(hlua_checksocket(L, 1)); |
| 1459 | unsigned int tmout = MAY_LJMP(luaL_checkunsigned(L, 2)) * 1000; |
| 1460 | |
| 1461 | socket->s->req->rto = tmout; |
| 1462 | socket->s->req->wto = tmout; |
| 1463 | socket->s->rep->rto = tmout; |
| 1464 | socket->s->rep->wto = tmout; |
| 1465 | |
| 1466 | return 0; |
| 1467 | } |
| 1468 | |
| 1469 | __LJMP static int hlua_socket_new(lua_State *L) |
| 1470 | { |
| 1471 | struct hlua_socket *socket; |
| 1472 | struct appctx *appctx; |
| 1473 | |
| 1474 | /* Check stack size. */ |
| 1475 | if (!lua_checkstack(L, 2)) { |
| 1476 | hlua_pusherror(L, "socket: full stack"); |
| 1477 | goto out_fail_conf; |
| 1478 | } |
| 1479 | |
| 1480 | socket = MAY_LJMP(lua_newuserdata(L, sizeof(*socket))); |
| 1481 | memset(socket, 0, sizeof(*socket)); |
| 1482 | |
| 1483 | /* Pop a class session metatable and affect it to the userdata. */ |
| 1484 | lua_rawgeti(L, LUA_REGISTRYINDEX, class_socket_ref); |
| 1485 | lua_setmetatable(L, -2); |
| 1486 | |
| 1487 | /* |
| 1488 | * |
| 1489 | * Get memory for the request. |
| 1490 | * |
| 1491 | */ |
| 1492 | |
| 1493 | socket->s = pool_alloc2(pool2_session); |
| 1494 | if (!socket->s) { |
| 1495 | hlua_pusherror(L, "socket: out of memory"); |
| 1496 | goto out_fail_conf; |
| 1497 | } |
| 1498 | |
| 1499 | socket->s->task = task_new(); |
| 1500 | if (!socket->s->task) { |
| 1501 | hlua_pusherror(L, "socket: out of memory"); |
| 1502 | goto out_free_session; |
| 1503 | } |
| 1504 | |
| 1505 | socket->s->req = pool_alloc2(pool2_channel); |
| 1506 | if (!socket->s->req) { |
| 1507 | hlua_pusherror(L, "socket: out of memory"); |
| 1508 | goto out_fail_req; |
| 1509 | } |
| 1510 | |
| 1511 | socket->s->req->buf = pool_alloc2(pool2_buffer); |
| 1512 | if (!socket->s->req->buf) { |
| 1513 | hlua_pusherror(L, "socket: out of memory"); |
| 1514 | goto out_fail_req_buf; |
| 1515 | } |
| 1516 | |
| 1517 | socket->s->rep = pool_alloc2(pool2_channel); |
| 1518 | if (!socket->s->rep) { |
| 1519 | hlua_pusherror(L, "socket: out of memory"); |
| 1520 | goto out_fail_rep; |
| 1521 | } |
| 1522 | |
| 1523 | socket->s->rep->buf = pool_alloc2(pool2_buffer); |
| 1524 | if (!socket->s->rep->buf) { |
| 1525 | hlua_pusherror(L, "socket: out of memory"); |
| 1526 | goto out_fail_rep_buf; |
| 1527 | } |
| 1528 | |
| 1529 | /* Configura empty Lua for the session. */ |
| 1530 | socket->s->hlua.T = NULL; |
| 1531 | socket->s->hlua.Tref = LUA_REFNIL; |
| 1532 | socket->s->hlua.Mref = LUA_REFNIL; |
| 1533 | socket->s->hlua.nargs = 0; |
| 1534 | socket->s->hlua.state = HLUA_STOP; |
| 1535 | LIST_INIT(&socket->s->hlua.com); |
| 1536 | |
| 1537 | /* session initialisation. */ |
| 1538 | session_init_srv_conn(socket->s); |
| 1539 | |
| 1540 | /* |
| 1541 | * |
| 1542 | * Configure the associated task. |
| 1543 | * |
| 1544 | */ |
| 1545 | |
| 1546 | /* This is the dedicated function to process the session. This function |
| 1547 | * is able to establish the conection, process the timeouts, etc ... |
| 1548 | */ |
| 1549 | socket->s->task->process = process_session; |
| 1550 | |
| 1551 | /* Back reference to session. This is used by process_session(). */ |
| 1552 | socket->s->task->context = socket->s; |
| 1553 | |
| 1554 | /* The priority of the task is normal. */ |
| 1555 | socket->s->task->nice = 0; |
| 1556 | |
| 1557 | /* Init the next run to eternity. Later in this function, this task is |
| 1558 | * waked. |
| 1559 | */ |
| 1560 | socket->s->task->expire = TICK_ETERNITY; |
| 1561 | |
| 1562 | /* |
| 1563 | * |
| 1564 | * Initialize the attached buffers |
| 1565 | * |
| 1566 | */ |
| 1567 | socket->s->req->buf->size = global.tune.bufsize; |
| 1568 | socket->s->rep->buf->size = global.tune.bufsize; |
| 1569 | |
| 1570 | /* |
| 1571 | * |
| 1572 | * Initialize channels. |
| 1573 | * |
| 1574 | */ |
| 1575 | |
| 1576 | /* This function reset the struct. It must be called |
| 1577 | * before the configuration. |
| 1578 | */ |
| 1579 | channel_init(socket->s->req); |
| 1580 | channel_init(socket->s->rep); |
| 1581 | |
| 1582 | socket->s->req->prod = &socket->s->si[0]; |
| 1583 | socket->s->req->cons = &socket->s->si[1]; |
| 1584 | |
| 1585 | socket->s->rep->prod = &socket->s->si[1]; |
| 1586 | socket->s->rep->cons = &socket->s->si[0]; |
| 1587 | |
| 1588 | socket->s->si[0].ib = socket->s->req; |
| 1589 | socket->s->si[0].ob = socket->s->rep; |
| 1590 | |
| 1591 | socket->s->si[1].ib = socket->s->rep; |
| 1592 | socket->s->si[1].ob = socket->s->req; |
| 1593 | |
| 1594 | socket->s->req->analysers = 0; |
| 1595 | socket->s->req->rto = socket_proxy.timeout.client; |
| 1596 | socket->s->req->wto = socket_proxy.timeout.server; |
| 1597 | socket->s->req->rex = TICK_ETERNITY; |
| 1598 | socket->s->req->wex = TICK_ETERNITY; |
| 1599 | socket->s->req->analyse_exp = TICK_ETERNITY; |
| 1600 | |
| 1601 | socket->s->rep->analysers = 0; |
| 1602 | socket->s->rep->rto = socket_proxy.timeout.server; |
| 1603 | socket->s->rep->wto = socket_proxy.timeout.client; |
| 1604 | socket->s->rep->rex = TICK_ETERNITY; |
| 1605 | socket->s->rep->wex = TICK_ETERNITY; |
| 1606 | socket->s->rep->analyse_exp = TICK_ETERNITY; |
| 1607 | |
| 1608 | /* |
| 1609 | * |
| 1610 | * Configure the session. |
| 1611 | * |
| 1612 | */ |
| 1613 | |
| 1614 | /* The session dont have listener. The listener is used with real |
| 1615 | * proxies. |
| 1616 | */ |
| 1617 | socket->s->listener = NULL; |
| 1618 | |
| 1619 | /* The flags are initialized to 0. Values are setted later. */ |
| 1620 | socket->s->flags = 0; |
| 1621 | |
| 1622 | /* Assign the configured proxy to the new session. */ |
| 1623 | socket->s->be = &socket_proxy; |
| 1624 | socket->s->fe = &socket_proxy; |
| 1625 | |
| 1626 | /* XXX: Set namy variables */ |
| 1627 | socket->s->store_count = 0; |
| 1628 | memset(socket->s->stkctr, 0, sizeof(socket->s->stkctr)); |
| 1629 | |
| 1630 | /* Configure logs. */ |
| 1631 | socket->s->logs.logwait = 0; |
| 1632 | socket->s->logs.level = 0; |
| 1633 | socket->s->logs.accept_date = date; /* user-visible date for logging */ |
| 1634 | socket->s->logs.tv_accept = now; /* corrected date for internal use */ |
| 1635 | socket->s->do_log = NULL; |
| 1636 | |
| 1637 | /* Function used if an error is occured. */ |
| 1638 | socket->s->srv_error = default_srv_error; |
| 1639 | |
| 1640 | /* Init the list of buffers. */ |
| 1641 | LIST_INIT(&socket->s->buffer_wait); |
| 1642 | |
| 1643 | /* Dont configure the unique ID. */ |
| 1644 | socket->s->uniq_id = 0; |
| 1645 | socket->s->unique_id = NULL; |
| 1646 | |
| 1647 | /* XXX: ? */ |
| 1648 | socket->s->pend_pos = NULL; |
| 1649 | |
| 1650 | /* XXX: See later. */ |
| 1651 | socket->s->txn.sessid = NULL; |
| 1652 | socket->s->txn.srv_cookie = NULL; |
| 1653 | socket->s->txn.cli_cookie = NULL; |
| 1654 | socket->s->txn.uri = NULL; |
| 1655 | socket->s->txn.req.cap = NULL; |
| 1656 | socket->s->txn.rsp.cap = NULL; |
| 1657 | socket->s->txn.hdr_idx.v = NULL; |
| 1658 | socket->s->txn.hdr_idx.size = 0; |
| 1659 | socket->s->txn.hdr_idx.used = 0; |
| 1660 | |
| 1661 | /* Configure "left" stream interface as applet. This "si" produce |
| 1662 | * and use the data received from the server. The applet is initialized |
| 1663 | * and is attached to the stream interface. |
| 1664 | */ |
| 1665 | |
| 1666 | /* The data producer is already connected. It is the applet. */ |
| 1667 | socket->s->req->flags = CF_READ_ATTACHED; |
| 1668 | |
| 1669 | channel_auto_connect(socket->s->req); /* don't wait to establish connection */ |
| 1670 | channel_auto_close(socket->s->req); /* let the producer forward close requests */ |
| 1671 | |
| 1672 | si_reset(&socket->s->si[0], socket->s->task); |
| 1673 | si_set_state(&socket->s->si[0], SI_ST_EST); /* connection established (resource exists) */ |
| 1674 | |
| 1675 | appctx = stream_int_register_handler(&socket->s->si[0], &update_applet); |
| 1676 | if (!appctx) |
| 1677 | goto out_fail_conn1; |
| 1678 | appctx->ctx.hlua.socket = socket; |
| 1679 | appctx->ctx.hlua.connected = 0; |
| 1680 | LIST_INIT(&appctx->ctx.hlua.wake_on_write); |
| 1681 | LIST_INIT(&appctx->ctx.hlua.wake_on_read); |
| 1682 | |
| 1683 | /* Configure "right" stream interface. this "si" is used to connect |
| 1684 | * and retrieve data from the server. The connection is initialized |
| 1685 | * with the "struct server". |
| 1686 | */ |
| 1687 | si_reset(&socket->s->si[1], socket->s->task); |
| 1688 | si_set_state(&socket->s->si[1], SI_ST_INI); |
| 1689 | socket->s->si[1].conn_retries = socket_proxy.conn_retries; |
| 1690 | |
| 1691 | /* Force destination server. */ |
| 1692 | socket->s->flags |= SN_DIRECT | SN_ASSIGNED | SN_ADDR_SET | SN_BE_ASSIGNED; |
| 1693 | socket->s->target = &socket_tcp.obj_type; |
| 1694 | |
| 1695 | /* This session is added to te lists of alive sessions. */ |
| 1696 | LIST_ADDQ(&sessions, &socket->s->list); |
| 1697 | |
| 1698 | /* XXX: I think that this list is used by stats. */ |
| 1699 | LIST_INIT(&socket->s->back_refs); |
| 1700 | |
| 1701 | /* Update statistics counters. */ |
| 1702 | socket_proxy.feconn++; /* beconn will be increased later */ |
| 1703 | jobs++; |
| 1704 | totalconn++; |
| 1705 | |
| 1706 | /* Return yield waiting for connection. */ |
| 1707 | return 1; |
| 1708 | |
| 1709 | out_fail_conn1: |
| 1710 | pool_free2(pool2_buffer, socket->s->rep->buf); |
| 1711 | out_fail_rep_buf: |
| 1712 | pool_free2(pool2_channel, socket->s->rep); |
| 1713 | out_fail_rep: |
| 1714 | pool_free2(pool2_buffer, socket->s->req->buf); |
| 1715 | out_fail_req_buf: |
| 1716 | pool_free2(pool2_channel, socket->s->req); |
| 1717 | out_fail_req: |
| 1718 | task_free(socket->s->task); |
| 1719 | out_free_session: |
| 1720 | pool_free2(pool2_session, socket->s); |
| 1721 | out_fail_conf: |
| 1722 | WILL_LJMP(lua_error(L)); |
| 1723 | return 0; |
| 1724 | } |
Thierry FOURNIER | 65f34c6 | 2015-02-16 20:11:43 +0100 | [diff] [blame] | 1725 | |
| 1726 | /* |
| 1727 | * |
| 1728 | * |
| 1729 | * Class TXN |
| 1730 | * |
| 1731 | * |
| 1732 | */ |
| 1733 | |
| 1734 | /* Returns a struct hlua_session if the stack entry "ud" is |
| 1735 | * a class session, otherwise it throws an error. |
| 1736 | */ |
| 1737 | __LJMP static struct hlua_txn *hlua_checktxn(lua_State *L, int ud) |
| 1738 | { |
| 1739 | return (struct hlua_txn *)MAY_LJMP(hlua_checkudata(L, ud, class_txn_ref)); |
| 1740 | } |
| 1741 | |
Thierry FOURNIER | 05c0b8a | 2015-02-25 11:43:21 +0100 | [diff] [blame] | 1742 | __LJMP static int hlua_setpriv(lua_State *L) |
| 1743 | { |
| 1744 | MAY_LJMP(check_args(L, 2, "set_priv")); |
| 1745 | |
| 1746 | /* It is useles to retrieve the session, but this function |
| 1747 | * runs only in a session context. |
| 1748 | */ |
| 1749 | MAY_LJMP(hlua_checktxn(L, 1)); |
| 1750 | struct hlua *hlua = hlua_gethlua(L); |
| 1751 | |
| 1752 | /* Remove previous value. */ |
| 1753 | if (hlua->Mref != -1) |
| 1754 | luaL_unref(L, hlua->Mref, LUA_REGISTRYINDEX); |
| 1755 | |
| 1756 | /* Get and store new value. */ |
| 1757 | lua_pushvalue(L, 2); /* Copy the element 2 at the top of the stack. */ |
| 1758 | hlua->Mref = luaL_ref(L, LUA_REGISTRYINDEX); /* pop the previously pushed value. */ |
| 1759 | |
| 1760 | return 0; |
| 1761 | } |
| 1762 | |
| 1763 | __LJMP static int hlua_getpriv(lua_State *L) |
| 1764 | { |
| 1765 | MAY_LJMP(check_args(L, 1, "get_priv")); |
| 1766 | |
| 1767 | /* It is useles to retrieve the session, but this function |
| 1768 | * runs only in a session context. |
| 1769 | */ |
| 1770 | MAY_LJMP(hlua_checktxn(L, 1)); |
| 1771 | struct hlua *hlua = hlua_gethlua(L); |
| 1772 | |
| 1773 | /* Push configuration index in the stack. */ |
| 1774 | lua_rawgeti(L, LUA_REGISTRYINDEX, hlua->Mref); |
| 1775 | |
| 1776 | return 1; |
| 1777 | } |
| 1778 | |
Thierry FOURNIER | 65f34c6 | 2015-02-16 20:11:43 +0100 | [diff] [blame] | 1779 | /* Create stack entry containing a class TXN. This function |
| 1780 | * return 0 if the stack does not contains free slots, |
| 1781 | * otherwise it returns 1. |
| 1782 | */ |
| 1783 | static int hlua_txn_new(lua_State *L, struct session *s, struct proxy *p, void *l7) |
| 1784 | { |
| 1785 | struct hlua_txn *hs; |
| 1786 | |
| 1787 | /* Check stack size. */ |
| 1788 | if (!lua_checkstack(L, 2)) |
| 1789 | return 0; |
| 1790 | |
| 1791 | /* NOTE: The allocation never fails. The failure |
| 1792 | * throw an error, and the function never returns. |
| 1793 | * if the throw is not avalaible, the process is aborted. |
| 1794 | */ |
| 1795 | hs = lua_newuserdata(L, sizeof(struct hlua_txn)); |
| 1796 | hs->s = s; |
| 1797 | hs->p = p; |
| 1798 | hs->l7 = l7; |
| 1799 | |
| 1800 | /* Pop a class sesison metatable and affect it to the userdata. */ |
| 1801 | lua_rawgeti(L, LUA_REGISTRYINDEX, class_txn_ref); |
| 1802 | lua_setmetatable(L, -2); |
| 1803 | |
| 1804 | return 1; |
| 1805 | } |
| 1806 | |
Thierry FOURNIER | d0fa538 | 2015-02-16 20:14:51 +0100 | [diff] [blame] | 1807 | /* This function is an LUA binding. It is called with each sample-fetch. |
| 1808 | * It uses closure argument to store the associated sample-fetch. It |
| 1809 | * returns only one argument or throws an error. An error is throwed |
| 1810 | * only if an error is encoutered during the argument parsing. If |
| 1811 | * the "sample-fetch" function fails, nil is returned. |
| 1812 | */ |
| 1813 | __LJMP static int hlua_run_sample_fetch(lua_State *L) |
| 1814 | { |
| 1815 | struct hlua_txn *s; |
| 1816 | struct hlua_sample_fetch *f; |
| 1817 | struct arg args[ARGM_NBARGS]; |
| 1818 | int i; |
| 1819 | struct sample smp; |
| 1820 | |
| 1821 | /* Get closure arguments. */ |
| 1822 | f = (struct hlua_sample_fetch *)lua_touserdata(L, lua_upvalueindex(1)); |
| 1823 | |
| 1824 | /* Get traditionnal arguments. */ |
| 1825 | s = MAY_LJMP(hlua_checktxn(L, 1)); |
| 1826 | |
| 1827 | /* Get extra arguments. */ |
| 1828 | for (i = 0; i <= lua_gettop(L); i++) { |
| 1829 | if (i >= ARGM_NBARGS) |
| 1830 | break; |
| 1831 | hlua_lua2arg(L, i + 2, &args[i]); |
| 1832 | } |
| 1833 | args[i].type = ARGT_STOP; |
| 1834 | |
| 1835 | /* Check arguments. */ |
| 1836 | MAY_LJMP(hlua_lua2arg_check(L, 1, args, f->f->arg_mask)); |
| 1837 | |
| 1838 | /* Run the special args cehcker. */ |
| 1839 | if (!f->f->val_args(args, NULL)) { |
| 1840 | lua_pushfstring(L, "error in arguments"); |
| 1841 | WILL_LJMP(lua_error(L)); |
| 1842 | } |
| 1843 | |
| 1844 | /* Initialise the sample. */ |
| 1845 | memset(&smp, 0, sizeof(smp)); |
| 1846 | |
| 1847 | /* Run the sample fetch process. */ |
| 1848 | if (!f->f->process(s->p, s->s, s->l7, 0, args, &smp, f->f->kw, f->f->private)) { |
| 1849 | lua_pushnil(L); |
| 1850 | return 1; |
| 1851 | } |
| 1852 | |
| 1853 | /* Convert the returned sample in lua value. */ |
| 1854 | hlua_smp2lua(L, &smp); |
| 1855 | return 1; |
| 1856 | } |
| 1857 | |
Thierry FOURNIER | 9a819e7 | 2015-02-16 20:22:55 +0100 | [diff] [blame] | 1858 | /* This function is an LUA binding. It creates ans returns |
| 1859 | * an array of HTTP headers. This function does not fails. |
| 1860 | */ |
| 1861 | static int hlua_session_getheaders(lua_State *L) |
| 1862 | { |
| 1863 | struct hlua_txn *s = MAY_LJMP(hlua_checktxn(L, 1)); |
| 1864 | struct session *sess = s->s; |
| 1865 | const char *cur_ptr, *cur_next, *p; |
| 1866 | int old_idx, cur_idx; |
| 1867 | struct hdr_idx_elem *cur_hdr; |
| 1868 | const char *hn, *hv; |
| 1869 | int hnl, hvl; |
| 1870 | |
| 1871 | /* Create the table. */ |
| 1872 | lua_newtable(L); |
| 1873 | |
| 1874 | /* Build array of headers. */ |
| 1875 | old_idx = 0; |
| 1876 | cur_next = sess->req->buf->p + hdr_idx_first_pos(&sess->txn.hdr_idx); |
| 1877 | |
| 1878 | while (1) { |
| 1879 | cur_idx = sess->txn.hdr_idx.v[old_idx].next; |
| 1880 | if (!cur_idx) |
| 1881 | break; |
| 1882 | old_idx = cur_idx; |
| 1883 | |
| 1884 | cur_hdr = &sess->txn.hdr_idx.v[cur_idx]; |
| 1885 | cur_ptr = cur_next; |
| 1886 | cur_next = cur_ptr + cur_hdr->len + cur_hdr->cr + 1; |
| 1887 | |
| 1888 | /* Now we have one full header at cur_ptr of len cur_hdr->len, |
| 1889 | * and the next header starts at cur_next. We'll check |
| 1890 | * this header in the list as well as against the default |
| 1891 | * rule. |
| 1892 | */ |
| 1893 | |
| 1894 | /* look for ': *'. */ |
| 1895 | hn = cur_ptr; |
| 1896 | for (p = cur_ptr; p < cur_ptr + cur_hdr->len && *p != ':'; p++); |
| 1897 | if (p >= cur_ptr+cur_hdr->len) |
| 1898 | continue; |
| 1899 | hnl = p - hn; |
| 1900 | p++; |
| 1901 | while (p < cur_ptr+cur_hdr->len && ( *p == ' ' || *p == '\t' )) |
| 1902 | p++; |
| 1903 | if (p >= cur_ptr+cur_hdr->len) |
| 1904 | continue; |
| 1905 | hv = p; |
| 1906 | hvl = cur_ptr+cur_hdr->len-p; |
| 1907 | |
| 1908 | /* Push values in the table. */ |
| 1909 | lua_pushlstring(L, hn, hnl); |
| 1910 | lua_pushlstring(L, hv, hvl); |
| 1911 | lua_settable(L, -3); |
| 1912 | } |
| 1913 | |
| 1914 | return 1; |
| 1915 | } |
| 1916 | |
Thierry FOURNIER | 5b8608f | 2015-02-16 19:43:25 +0100 | [diff] [blame] | 1917 | static struct task *hlua_sleep_process_task(struct task *task) |
| 1918 | { |
| 1919 | struct hlua_sleep *t = task->context; |
| 1920 | |
| 1921 | /* Check time and got to sleep a little bit more if the |
| 1922 | * expires is not come. |
| 1923 | */ |
| 1924 | if (now_ms < t->wakeup_ms) { |
| 1925 | task_schedule(t->task, t->wakeup_ms); |
| 1926 | return NULL; |
| 1927 | } |
| 1928 | |
| 1929 | /* Wake associated signals. */ |
| 1930 | hlua_com_wake(&t->com); |
| 1931 | |
| 1932 | /* Delete task. */ |
| 1933 | task_delete(task); /* The task may remain in the wait queue. */ |
| 1934 | task_free(task); |
| 1935 | pool_free2(pool2_hlua_sleep, t); |
| 1936 | |
| 1937 | return NULL; |
| 1938 | } |
| 1939 | |
| 1940 | __LJMP static int hlua_sleep_yield(lua_State *L) |
| 1941 | { |
| 1942 | int wakeup_ms = lua_tointeger(L, -1); |
| 1943 | if (now_ms < wakeup_ms) |
| 1944 | WILL_LJMP(lua_yieldk(L, 0, 0, hlua_sleep_yield)); |
| 1945 | return 0; |
| 1946 | } |
| 1947 | |
| 1948 | __LJMP static inline int _hlua_sleep(lua_State *L, int delay) |
| 1949 | { |
| 1950 | struct hlua_sleep *t; |
| 1951 | struct hlua *hlua = hlua_gethlua(L); |
| 1952 | |
| 1953 | /* If hlua is not set, I'm in start mode. I can run |
| 1954 | * a blocking sleep. |
| 1955 | */ |
| 1956 | if (!hlua || !hlua->task) { |
| 1957 | usleep(delay * 1000); |
| 1958 | return 0; |
| 1959 | } |
| 1960 | |
| 1961 | /* Reserve memory. */ |
| 1962 | t = pool_alloc2(pool2_hlua_sleep); |
| 1963 | if (!t) |
| 1964 | WILL_LJMP(luaL_error(L, "lua: out of memory")); |
| 1965 | t->task = task_new(); |
| 1966 | if (!t->task) |
| 1967 | WILL_LJMP(luaL_error(L, "lua: out of memory")); |
| 1968 | |
| 1969 | /* Init and schedule the sleep process. */ |
| 1970 | t->task->process = hlua_sleep_process_task; |
| 1971 | t->task->context = t; |
| 1972 | t->wakeup_ms = tick_add(now_ms, delay); |
| 1973 | task_schedule(t->task, t->wakeup_ms); |
| 1974 | |
| 1975 | /* Init the signal between the sleep task and the current lua task. */ |
| 1976 | LIST_INIT(&t->com); |
| 1977 | if (!hlua_com_new(hlua, &t->com)) |
| 1978 | WILL_LJMP(luaL_error(L, "out of memory error")); |
| 1979 | |
| 1980 | /* Store the wakeup time in the lua stack. */ |
| 1981 | lua_pushinteger(L, t->wakeup_ms); |
| 1982 | |
| 1983 | WILL_LJMP(lua_yieldk(L, 0, 0, hlua_sleep_yield)); |
| 1984 | return 0; |
| 1985 | } |
| 1986 | |
| 1987 | __LJMP static int hlua_sleep(lua_State *L) |
| 1988 | { |
| 1989 | unsigned int delay; |
| 1990 | |
| 1991 | /* Check number of arguments. */ |
| 1992 | if (lua_gettop(L) != 1) |
| 1993 | WILL_LJMP(luaL_error(L, "sleep: needs 1 argument")); |
| 1994 | |
| 1995 | delay = MAY_LJMP(luaL_checkunsigned(L, 1)) * 1000; |
| 1996 | |
| 1997 | return MAY_LJMP(_hlua_sleep(L, delay)); |
| 1998 | } |
| 1999 | |
| 2000 | static int hlua_msleep(lua_State *L) |
| 2001 | { |
| 2002 | unsigned int delay; |
| 2003 | |
| 2004 | /* Check number of arguments. */ |
| 2005 | if (lua_gettop(L) != 1) |
| 2006 | WILL_LJMP(luaL_error(L, "sleep: needs 1 argument")); |
| 2007 | |
| 2008 | delay = MAY_LJMP(luaL_checkunsigned(L, 1)); |
| 2009 | |
| 2010 | return MAY_LJMP(_hlua_sleep(L, delay)); |
| 2011 | } |
| 2012 | |
Thierry FOURNIER | 24f3353 | 2015-01-23 12:13:00 +0100 | [diff] [blame] | 2013 | /* This function is used as a calback of a task. It is called by the |
| 2014 | * HAProxy task subsystem when the task is awaked. The LUA runtime can |
| 2015 | * return an E_AGAIN signal, the emmiter of this signal must set a |
| 2016 | * signal to wake the task. |
| 2017 | */ |
| 2018 | static struct task *hlua_process_task(struct task *task) |
| 2019 | { |
| 2020 | struct hlua *hlua = task->context; |
| 2021 | enum hlua_exec status; |
| 2022 | |
| 2023 | /* We need to remove the task from the wait queue before executing |
| 2024 | * the Lua code because we don't know if it needs to wait for |
| 2025 | * another timer or not in the case of E_AGAIN. |
| 2026 | */ |
| 2027 | task_delete(task); |
| 2028 | |
| 2029 | /* Execute the Lua code. */ |
| 2030 | status = hlua_ctx_resume(hlua, 1); |
| 2031 | |
| 2032 | switch (status) { |
| 2033 | /* finished or yield */ |
| 2034 | case HLUA_E_OK: |
| 2035 | hlua_ctx_destroy(hlua); |
| 2036 | task_delete(task); |
| 2037 | task_free(task); |
| 2038 | break; |
| 2039 | |
| 2040 | case HLUA_E_AGAIN: /* co process wake me later. */ |
| 2041 | break; |
| 2042 | |
| 2043 | /* finished with error. */ |
| 2044 | case HLUA_E_ERRMSG: |
| 2045 | send_log(NULL, LOG_ERR, "Lua task: %s.", lua_tostring(hlua->T, -1)); |
| 2046 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 2047 | Alert("Lua task: %s.\n", lua_tostring(hlua->T, -1)); |
| 2048 | hlua_ctx_destroy(hlua); |
| 2049 | task_delete(task); |
| 2050 | task_free(task); |
| 2051 | break; |
| 2052 | |
| 2053 | case HLUA_E_ERR: |
| 2054 | default: |
| 2055 | send_log(NULL, LOG_ERR, "Lua task: unknown error."); |
| 2056 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 2057 | Alert("Lua task: unknown error.\n"); |
| 2058 | hlua_ctx_destroy(hlua); |
| 2059 | task_delete(task); |
| 2060 | task_free(task); |
| 2061 | break; |
| 2062 | } |
| 2063 | return NULL; |
| 2064 | } |
| 2065 | |
Thierry FOURNIER | a4a0f3d | 2015-01-23 12:08:30 +0100 | [diff] [blame] | 2066 | /* This function is an LUA binding that register LUA function to be |
| 2067 | * executed after the HAProxy configuration parsing and before the |
| 2068 | * HAProxy scheduler starts. This function expect only one LUA |
| 2069 | * argument that is a function. This function returns nothing, but |
| 2070 | * throws if an error is encountered. |
| 2071 | */ |
| 2072 | __LJMP static int hlua_register_init(lua_State *L) |
| 2073 | { |
| 2074 | struct hlua_init_function *init; |
| 2075 | int ref; |
| 2076 | |
| 2077 | MAY_LJMP(check_args(L, 1, "register_init")); |
| 2078 | |
| 2079 | ref = MAY_LJMP(hlua_checkfunction(L, 1)); |
| 2080 | |
| 2081 | init = malloc(sizeof(*init)); |
| 2082 | if (!init) |
| 2083 | WILL_LJMP(luaL_error(L, "lua out of memory error.")); |
| 2084 | |
| 2085 | init->function_ref = ref; |
| 2086 | LIST_ADDQ(&hlua_init_functions, &init->l); |
| 2087 | return 0; |
| 2088 | } |
| 2089 | |
Thierry FOURNIER | 24f3353 | 2015-01-23 12:13:00 +0100 | [diff] [blame] | 2090 | /* This functio is an LUA binding. It permits to register a task |
| 2091 | * executed in parallel of the main HAroxy activity. The task is |
| 2092 | * created and it is set in the HAProxy scheduler. It can be called |
| 2093 | * from the "init" section, "post init" or during the runtime. |
| 2094 | * |
| 2095 | * Lua prototype: |
| 2096 | * |
| 2097 | * <none> core.register_task(<function>) |
| 2098 | */ |
| 2099 | static int hlua_register_task(lua_State *L) |
| 2100 | { |
| 2101 | struct hlua *hlua; |
| 2102 | struct task *task; |
| 2103 | int ref; |
| 2104 | |
| 2105 | MAY_LJMP(check_args(L, 1, "register_task")); |
| 2106 | |
| 2107 | ref = MAY_LJMP(hlua_checkfunction(L, 1)); |
| 2108 | |
| 2109 | hlua = malloc(sizeof(*hlua)); |
| 2110 | if (!hlua) |
| 2111 | WILL_LJMP(luaL_error(L, "lua out of memory error.")); |
| 2112 | |
| 2113 | task = task_new(); |
| 2114 | task->context = hlua; |
| 2115 | task->process = hlua_process_task; |
| 2116 | |
| 2117 | if (!hlua_ctx_init(hlua, task)) |
| 2118 | WILL_LJMP(luaL_error(L, "lua out of memory error.")); |
| 2119 | |
| 2120 | /* Restore the function in the stack. */ |
| 2121 | lua_rawgeti(hlua->T, LUA_REGISTRYINDEX, ref); |
| 2122 | hlua->nargs = 0; |
| 2123 | |
| 2124 | /* Schedule task. */ |
| 2125 | task_schedule(task, now_ms); |
| 2126 | |
| 2127 | return 0; |
| 2128 | } |
| 2129 | |
Thierry FOURNIER | 9be813f | 2015-02-16 20:21:12 +0100 | [diff] [blame] | 2130 | /* Wrapper called by HAProxy to execute an LUA converter. This wrapper |
| 2131 | * doesn't allow "yield" functions because the HAProxy engine cannot |
| 2132 | * resume converters. |
| 2133 | */ |
| 2134 | static int hlua_sample_conv_wrapper(struct session *session, const struct arg *arg_p, |
| 2135 | struct sample *smp, void *private) |
| 2136 | { |
| 2137 | struct hlua_function *fcn = (struct hlua_function *)private; |
| 2138 | |
| 2139 | /* If it is the first run, initialize the data for the call. */ |
| 2140 | if (session->hlua.state == HLUA_STOP) { |
| 2141 | /* Check stack available size. */ |
| 2142 | if (!lua_checkstack(session->hlua.T, 1)) { |
| 2143 | send_log(session->be, LOG_ERR, "Lua converter '%s': full stack.", fcn->name); |
| 2144 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 2145 | Alert("Lua converter '%s': full stack.\n", fcn->name); |
| 2146 | return 0; |
| 2147 | } |
| 2148 | |
| 2149 | /* Restore the function in the stack. */ |
| 2150 | lua_rawgeti(session->hlua.T, LUA_REGISTRYINDEX, fcn->function_ref); |
| 2151 | |
| 2152 | /* convert input sample and pust-it in the stack. */ |
| 2153 | if (!lua_checkstack(session->hlua.T, 1)) { |
| 2154 | send_log(session->be, LOG_ERR, "Lua converter '%s': full stack.", fcn->name); |
| 2155 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 2156 | Alert("Lua converter '%s': full stack.\n", fcn->name); |
| 2157 | return 0; |
| 2158 | } |
| 2159 | hlua_smp2lua(session->hlua.T, smp); |
| 2160 | session->hlua.nargs = 2; |
| 2161 | |
| 2162 | /* push keywords in the stack. */ |
| 2163 | if (arg_p) { |
| 2164 | for (; arg_p->type != ARGT_STOP; arg_p++) { |
| 2165 | if (!lua_checkstack(session->hlua.T, 1)) { |
| 2166 | send_log(session->be, LOG_ERR, "Lua converter '%s': full stack.", fcn->name); |
| 2167 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 2168 | Alert("Lua converter '%s': full stack.\n", fcn->name); |
| 2169 | return 0; |
| 2170 | } |
| 2171 | hlua_arg2lua(session->hlua.T, arg_p); |
| 2172 | session->hlua.nargs++; |
| 2173 | } |
| 2174 | } |
| 2175 | |
| 2176 | /* Set the currently running flag. */ |
| 2177 | session->hlua.state = HLUA_RUN; |
| 2178 | } |
| 2179 | |
| 2180 | /* Execute the function. */ |
| 2181 | switch (hlua_ctx_resume(&session->hlua, 0)) { |
| 2182 | /* finished. */ |
| 2183 | case HLUA_E_OK: |
| 2184 | /* Convert the returned value in sample. */ |
| 2185 | hlua_lua2smp(session->hlua.T, -1, smp); |
| 2186 | lua_pop(session->hlua.T, 1); |
| 2187 | return 1; |
| 2188 | |
| 2189 | /* yield. */ |
| 2190 | case HLUA_E_AGAIN: |
| 2191 | send_log(session->be, LOG_ERR, "Lua converter '%s': cannot use yielded functions.", fcn->name); |
| 2192 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 2193 | Alert("Lua converter '%s': cannot use yielded functions.\n", fcn->name); |
| 2194 | return 0; |
| 2195 | |
| 2196 | /* finished with error. */ |
| 2197 | case HLUA_E_ERRMSG: |
| 2198 | /* Display log. */ |
| 2199 | send_log(session->be, LOG_ERR, "Lua converter '%s': %s.", fcn->name, lua_tostring(session->hlua.T, -1)); |
| 2200 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 2201 | Alert("Lua converter '%s': %s.\n", fcn->name, lua_tostring(session->hlua.T, -1)); |
| 2202 | lua_pop(session->hlua.T, 1); |
| 2203 | return 0; |
| 2204 | |
| 2205 | case HLUA_E_ERR: |
| 2206 | /* Display log. */ |
| 2207 | send_log(session->be, LOG_ERR, "Lua converter '%s' returns an unknown error.", fcn->name); |
| 2208 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 2209 | Alert("Lua converter '%s' returns an unknown error.\n", fcn->name); |
| 2210 | |
| 2211 | default: |
| 2212 | return 0; |
| 2213 | } |
| 2214 | } |
| 2215 | |
Thierry FOURNIER | fa0e5dd | 2015-02-16 20:19:18 +0100 | [diff] [blame] | 2216 | /* Wrapper called by HAProxy to execute a sample-fetch. this wrapper |
| 2217 | * doesn't allow "yield" functions because the HAProxy engine cannot |
| 2218 | * resume sample-fetches. |
| 2219 | */ |
| 2220 | static int hlua_sample_fetch_wrapper(struct proxy *px, struct session *s, void *l7, |
| 2221 | unsigned int opt, const struct arg *arg_p, |
| 2222 | struct sample *smp, const char *kw, void *private) |
| 2223 | { |
| 2224 | struct hlua_function *fcn = (struct hlua_function *)private; |
| 2225 | |
| 2226 | /* If it is the first run, initialize the data for the call. */ |
| 2227 | if (s->hlua.state == HLUA_STOP) { |
| 2228 | /* Check stack available size. */ |
| 2229 | if (!lua_checkstack(s->hlua.T, 2)) { |
| 2230 | send_log(px, LOG_ERR, "Lua sample-fetch '%s': full stack.", fcn->name); |
| 2231 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 2232 | Alert("Lua sample-fetch '%s': full stack.\n", fcn->name); |
| 2233 | return 0; |
| 2234 | } |
| 2235 | |
| 2236 | /* Restore the function in the stack. */ |
| 2237 | lua_rawgeti(s->hlua.T, LUA_REGISTRYINDEX, fcn->function_ref); |
| 2238 | |
| 2239 | /* push arguments in the stack. */ |
| 2240 | if (!hlua_txn_new(s->hlua.T, s, px, l7)) { |
| 2241 | send_log(px, LOG_ERR, "Lua sample-fetch '%s': full stack.", fcn->name); |
| 2242 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 2243 | Alert("Lua sample-fetch '%s': full stack.\n", fcn->name); |
| 2244 | return 0; |
| 2245 | } |
| 2246 | s->hlua.nargs = 1; |
| 2247 | |
| 2248 | /* push keywords in the stack. */ |
| 2249 | for (; arg_p && arg_p->type != ARGT_STOP; arg_p++) { |
| 2250 | /* Check stack available size. */ |
| 2251 | if (!lua_checkstack(s->hlua.T, 1)) { |
| 2252 | send_log(px, LOG_ERR, "Lua sample-fetch '%s': full stack.", fcn->name); |
| 2253 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 2254 | Alert("Lua sample-fetch '%s': full stack.\n", fcn->name); |
| 2255 | return 0; |
| 2256 | } |
| 2257 | if (!lua_checkstack(s->hlua.T, 1)) { |
| 2258 | send_log(px, LOG_ERR, "Lua sample-fetch '%s': full stack.", fcn->name); |
| 2259 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 2260 | Alert("Lua sample-fetch '%s': full stack.\n", fcn->name); |
| 2261 | return 0; |
| 2262 | } |
| 2263 | hlua_arg2lua(s->hlua.T, arg_p); |
| 2264 | s->hlua.nargs++; |
| 2265 | } |
| 2266 | |
| 2267 | /* Set the currently running flag. */ |
| 2268 | s->hlua.state = HLUA_RUN; |
| 2269 | } |
| 2270 | |
| 2271 | /* Execute the function. */ |
| 2272 | switch (hlua_ctx_resume(&s->hlua, 0)) { |
| 2273 | /* finished. */ |
| 2274 | case HLUA_E_OK: |
| 2275 | /* Convert the returned value in sample. */ |
| 2276 | hlua_lua2smp(s->hlua.T, -1, smp); |
| 2277 | lua_pop(s->hlua.T, 1); |
| 2278 | |
| 2279 | /* Set the end of execution flag. */ |
| 2280 | smp->flags &= ~SMP_F_MAY_CHANGE; |
| 2281 | return 1; |
| 2282 | |
| 2283 | /* yield. */ |
| 2284 | case HLUA_E_AGAIN: |
| 2285 | send_log(px, LOG_ERR, "Lua sample-fetch '%s': cannot use yielded functions.", fcn->name); |
| 2286 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 2287 | Alert("Lua sample-fetch '%s': cannot use yielded functions.\n", fcn->name); |
| 2288 | return 0; |
| 2289 | |
| 2290 | /* finished with error. */ |
| 2291 | case HLUA_E_ERRMSG: |
| 2292 | /* Display log. */ |
| 2293 | send_log(px, LOG_ERR, "Lua sample-fetch '%s': %s.", fcn->name, lua_tostring(s->hlua.T, -1)); |
| 2294 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 2295 | Alert("Lua sample-fetch '%s': %s.\n", fcn->name, lua_tostring(s->hlua.T, -1)); |
| 2296 | lua_pop(s->hlua.T, 1); |
| 2297 | return 0; |
| 2298 | |
| 2299 | case HLUA_E_ERR: |
| 2300 | /* Display log. */ |
| 2301 | send_log(px, LOG_ERR, "Lua sample-fetch '%s' returns an unknown error.", fcn->name); |
| 2302 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 2303 | Alert("Lua sample-fetch '%s': returns an unknown error.\n", fcn->name); |
| 2304 | |
| 2305 | default: |
| 2306 | return 0; |
| 2307 | } |
| 2308 | } |
| 2309 | |
Thierry FOURNIER | 9be813f | 2015-02-16 20:21:12 +0100 | [diff] [blame] | 2310 | /* This function is an LUA binding used for registering |
| 2311 | * "sample-conv" functions. It expects a converter name used |
| 2312 | * in the haproxy configuration file, and an LUA function. |
| 2313 | */ |
| 2314 | __LJMP static int hlua_register_converters(lua_State *L) |
| 2315 | { |
| 2316 | struct sample_conv_kw_list *sck; |
| 2317 | const char *name; |
| 2318 | int ref; |
| 2319 | int len; |
| 2320 | struct hlua_function *fcn; |
| 2321 | |
| 2322 | MAY_LJMP(check_args(L, 2, "register_converters")); |
| 2323 | |
| 2324 | /* First argument : converter name. */ |
| 2325 | name = MAY_LJMP(luaL_checkstring(L, 1)); |
| 2326 | |
| 2327 | /* Second argument : lua function. */ |
| 2328 | ref = MAY_LJMP(hlua_checkfunction(L, 2)); |
| 2329 | |
| 2330 | /* Allocate and fill the sample fetch keyword struct. */ |
| 2331 | sck = malloc(sizeof(struct sample_conv_kw_list) + |
| 2332 | sizeof(struct sample_conv) * 2); |
| 2333 | if (!sck) |
| 2334 | WILL_LJMP(luaL_error(L, "lua out of memory error.")); |
| 2335 | fcn = malloc(sizeof(*fcn)); |
| 2336 | if (!fcn) |
| 2337 | WILL_LJMP(luaL_error(L, "lua out of memory error.")); |
| 2338 | |
| 2339 | /* Fill fcn. */ |
| 2340 | fcn->name = strdup(name); |
| 2341 | if (!fcn->name) |
| 2342 | WILL_LJMP(luaL_error(L, "lua out of memory error.")); |
| 2343 | fcn->function_ref = ref; |
| 2344 | |
| 2345 | /* List head */ |
| 2346 | sck->list.n = sck->list.p = NULL; |
| 2347 | |
| 2348 | /* converter keyword. */ |
| 2349 | len = strlen("lua.") + strlen(name) + 1; |
| 2350 | sck->kw[0].kw = malloc(len); |
| 2351 | if (!sck->kw[0].kw) |
| 2352 | WILL_LJMP(luaL_error(L, "lua out of memory error.")); |
| 2353 | |
| 2354 | snprintf((char *)sck->kw[0].kw, len, "lua.%s", name); |
| 2355 | sck->kw[0].process = hlua_sample_conv_wrapper; |
| 2356 | sck->kw[0].arg_mask = ARG5(0,STR,STR,STR,STR,STR); |
| 2357 | sck->kw[0].val_args = NULL; |
| 2358 | sck->kw[0].in_type = SMP_T_STR; |
| 2359 | sck->kw[0].out_type = SMP_T_STR; |
| 2360 | sck->kw[0].private = fcn; |
| 2361 | |
| 2362 | /* End of array. */ |
| 2363 | memset(&sck->kw[1], 0, sizeof(struct sample_conv)); |
| 2364 | |
| 2365 | /* Register this new converter */ |
| 2366 | sample_register_convs(sck); |
| 2367 | |
| 2368 | return 0; |
| 2369 | } |
| 2370 | |
Thierry FOURNIER | fa0e5dd | 2015-02-16 20:19:18 +0100 | [diff] [blame] | 2371 | /* This fucntion is an LUA binding used for registering |
| 2372 | * "sample-fetch" functions. It expects a converter name used |
| 2373 | * in the haproxy configuration file, and an LUA function. |
| 2374 | */ |
| 2375 | __LJMP static int hlua_register_fetches(lua_State *L) |
| 2376 | { |
| 2377 | const char *name; |
| 2378 | int ref; |
| 2379 | int len; |
| 2380 | struct sample_fetch_kw_list *sfk; |
| 2381 | struct hlua_function *fcn; |
| 2382 | |
| 2383 | MAY_LJMP(check_args(L, 2, "register_fetches")); |
| 2384 | |
| 2385 | /* First argument : sample-fetch name. */ |
| 2386 | name = MAY_LJMP(luaL_checkstring(L, 1)); |
| 2387 | |
| 2388 | /* Second argument : lua function. */ |
| 2389 | ref = MAY_LJMP(hlua_checkfunction(L, 2)); |
| 2390 | |
| 2391 | /* Allocate and fill the sample fetch keyword struct. */ |
| 2392 | sfk = malloc(sizeof(struct sample_fetch_kw_list) + |
| 2393 | sizeof(struct sample_fetch) * 2); |
| 2394 | if (!sfk) |
| 2395 | WILL_LJMP(luaL_error(L, "lua out of memory error.")); |
| 2396 | fcn = malloc(sizeof(*fcn)); |
| 2397 | if (!fcn) |
| 2398 | WILL_LJMP(luaL_error(L, "lua out of memory error.")); |
| 2399 | |
| 2400 | /* Fill fcn. */ |
| 2401 | fcn->name = strdup(name); |
| 2402 | if (!fcn->name) |
| 2403 | WILL_LJMP(luaL_error(L, "lua out of memory error.")); |
| 2404 | fcn->function_ref = ref; |
| 2405 | |
| 2406 | /* List head */ |
| 2407 | sfk->list.n = sfk->list.p = NULL; |
| 2408 | |
| 2409 | /* sample-fetch keyword. */ |
| 2410 | len = strlen("lua.") + strlen(name) + 1; |
| 2411 | sfk->kw[0].kw = malloc(len); |
| 2412 | if (!sfk->kw[0].kw) |
| 2413 | return luaL_error(L, "lua out of memory error."); |
| 2414 | |
| 2415 | snprintf((char *)sfk->kw[0].kw, len, "lua.%s", name); |
| 2416 | sfk->kw[0].process = hlua_sample_fetch_wrapper; |
| 2417 | sfk->kw[0].arg_mask = ARG5(0,STR,STR,STR,STR,STR); |
| 2418 | sfk->kw[0].val_args = NULL; |
| 2419 | sfk->kw[0].out_type = SMP_T_STR; |
| 2420 | sfk->kw[0].use = SMP_USE_HTTP_ANY; |
| 2421 | sfk->kw[0].val = 0; |
| 2422 | sfk->kw[0].private = fcn; |
| 2423 | |
| 2424 | /* End of array. */ |
| 2425 | memset(&sfk->kw[1], 0, sizeof(struct sample_fetch)); |
| 2426 | |
| 2427 | /* Register this new fetch. */ |
| 2428 | sample_register_fetches(sfk); |
| 2429 | |
| 2430 | return 0; |
| 2431 | } |
| 2432 | |
Thierry FOURNIER | 258d8aa | 2015-02-16 20:23:40 +0100 | [diff] [blame] | 2433 | /* global {tcp|http}-request parser. Return 1 in succes case, else return 0. */ |
| 2434 | static int hlua_parse_rule(const char **args, int *cur_arg, struct proxy *px, |
| 2435 | struct hlua_rule **rule_p, char **err) |
| 2436 | { |
| 2437 | struct hlua_rule *rule; |
| 2438 | |
| 2439 | /* Memory for the rule. */ |
| 2440 | rule = malloc(sizeof(*rule)); |
| 2441 | if (!rule) { |
| 2442 | memprintf(err, "out of memory error"); |
| 2443 | return 0; |
| 2444 | } |
| 2445 | *rule_p = rule; |
| 2446 | |
| 2447 | /* The requiered arg is a function name. */ |
| 2448 | if (!args[*cur_arg]) { |
| 2449 | memprintf(err, "expect Lua function name"); |
| 2450 | return 0; |
| 2451 | } |
| 2452 | |
| 2453 | /* Lookup for the symbol, and check if it is a function. */ |
| 2454 | lua_getglobal(gL.T, args[*cur_arg]); |
| 2455 | if (lua_isnil(gL.T, -1)) { |
| 2456 | lua_pop(gL.T, 1); |
| 2457 | memprintf(err, "Lua function '%s' not found", args[*cur_arg]); |
| 2458 | return 0; |
| 2459 | } |
| 2460 | if (!lua_isfunction(gL.T, -1)) { |
| 2461 | lua_pop(gL.T, 1); |
| 2462 | memprintf(err, "'%s' is not a function", args[*cur_arg]); |
| 2463 | return 0; |
| 2464 | } |
| 2465 | |
| 2466 | /* Reference the Lua function and store the reference. */ |
| 2467 | rule->fcn.function_ref = luaL_ref(gL.T, LUA_REGISTRYINDEX); |
| 2468 | rule->fcn.name = strdup(args[*cur_arg]); |
| 2469 | if (!rule->fcn.name) { |
| 2470 | memprintf(err, "out of memory error."); |
| 2471 | return 0; |
| 2472 | } |
| 2473 | (*cur_arg)++; |
| 2474 | |
| 2475 | /* TODO: later accept arguments. */ |
| 2476 | rule->args = NULL; |
| 2477 | |
| 2478 | return 1; |
| 2479 | } |
| 2480 | |
| 2481 | /* This function is a wrapper to execute each LUA function declared |
| 2482 | * as an action wrapper during the initialisation period. This function |
| 2483 | * return 1 if the processing is finished (with oe without error) and |
| 2484 | * return 0 if the function must be called again because the LUA |
| 2485 | * returns a yield. |
| 2486 | */ |
| 2487 | static int hlua_request_act_wrapper(struct hlua_rule *rule, struct proxy *px, |
| 2488 | struct session *s, struct http_txn *http_txn, |
| 2489 | unsigned int analyzer) |
| 2490 | { |
| 2491 | char **arg; |
| 2492 | |
| 2493 | /* If it is the first run, initialize the data for the call. */ |
| 2494 | if (s->hlua.state == HLUA_STOP) { |
| 2495 | /* Check stack available size. */ |
| 2496 | if (!lua_checkstack(s->hlua.T, 1)) { |
| 2497 | send_log(px, LOG_ERR, "Lua function '%s': full stack.", rule->fcn.name); |
| 2498 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 2499 | Alert("Lua function '%s': full stack.\n", rule->fcn.name); |
| 2500 | return 0; |
| 2501 | } |
| 2502 | |
| 2503 | /* Restore the function in the stack. */ |
| 2504 | lua_rawgeti(s->hlua.T, LUA_REGISTRYINDEX, rule->fcn.function_ref); |
| 2505 | |
| 2506 | /* Create and and push object session in the stack. */ |
| 2507 | if (!hlua_txn_new(s->hlua.T, s, px, http_txn)) { |
| 2508 | send_log(px, LOG_ERR, "Lua function '%s': full stack.", rule->fcn.name); |
| 2509 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 2510 | Alert("Lua function '%s': full stack.\n", rule->fcn.name); |
| 2511 | return 0; |
| 2512 | } |
| 2513 | s->hlua.nargs = 1; |
| 2514 | |
| 2515 | /* push keywords in the stack. */ |
| 2516 | for (arg = rule->args; arg && *arg; arg++) { |
| 2517 | if (!lua_checkstack(s->hlua.T, 1)) { |
| 2518 | send_log(px, LOG_ERR, "Lua function '%s': full stack.", rule->fcn.name); |
| 2519 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 2520 | Alert("Lua function '%s': full stack.\n", rule->fcn.name); |
| 2521 | return 0; |
| 2522 | } |
| 2523 | lua_pushstring(s->hlua.T, *arg); |
| 2524 | s->hlua.nargs++; |
| 2525 | } |
| 2526 | |
| 2527 | /* Set the currently running flag. */ |
| 2528 | s->hlua.state = HLUA_RUN; |
| 2529 | } |
| 2530 | |
| 2531 | /* Execute the function. */ |
| 2532 | switch (hlua_ctx_resume(&s->hlua, 1)) { |
| 2533 | /* finished. */ |
| 2534 | case HLUA_E_OK: |
| 2535 | return 1; |
| 2536 | |
| 2537 | /* yield. */ |
| 2538 | case HLUA_E_AGAIN: |
| 2539 | /* Some actions can be wake up when a "write" event |
| 2540 | * is detected on a response channel. This is useful |
| 2541 | * only for actions targetted on the requests. |
| 2542 | */ |
| 2543 | if (analyzer & (AN_REQ_INSPECT_FE|AN_REQ_HTTP_PROCESS_FE)) { |
| 2544 | s->rep->flags |= CF_WAKE_WRITE; |
| 2545 | s->rep->analysers |= analyzer; |
| 2546 | } |
| 2547 | return 0; |
| 2548 | |
| 2549 | /* finished with error. */ |
| 2550 | case HLUA_E_ERRMSG: |
| 2551 | /* Display log. */ |
| 2552 | send_log(px, LOG_ERR, "Lua function '%s': %s.", rule->fcn.name, lua_tostring(s->hlua.T, -1)); |
| 2553 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 2554 | Alert("Lua function '%s': %s.\n", rule->fcn.name, lua_tostring(s->hlua.T, -1)); |
| 2555 | lua_pop(s->hlua.T, 1); |
| 2556 | return 1; |
| 2557 | |
| 2558 | case HLUA_E_ERR: |
| 2559 | /* Display log. */ |
| 2560 | send_log(px, LOG_ERR, "Lua function '%s' return an unknown error.", rule->fcn.name); |
| 2561 | if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) |
| 2562 | Alert("Lua function '%s' return an unknown error.\n", rule->fcn.name); |
| 2563 | |
| 2564 | default: |
| 2565 | return 1; |
| 2566 | } |
| 2567 | } |
| 2568 | |
| 2569 | /* Lua execution wrapper for "tcp-request". This function uses |
| 2570 | * "hlua_request_act_wrapper" for executing the LUA code. |
| 2571 | */ |
| 2572 | int hlua_tcp_req_act_wrapper(struct tcp_rule *tcp_rule, struct proxy *px, |
| 2573 | struct session *s) |
| 2574 | { |
| 2575 | return hlua_request_act_wrapper((struct hlua_rule *)tcp_rule->act_prm.data, |
| 2576 | px, s, NULL, AN_REQ_INSPECT_FE); |
| 2577 | } |
| 2578 | |
| 2579 | /* Lua execution wrapper for "tcp-response". This function uses |
| 2580 | * "hlua_request_act_wrapper" for executing the LUA code. |
| 2581 | */ |
| 2582 | int hlua_tcp_res_act_wrapper(struct tcp_rule *tcp_rule, struct proxy *px, |
| 2583 | struct session *s) |
| 2584 | { |
| 2585 | return hlua_request_act_wrapper((struct hlua_rule *)tcp_rule->act_prm.data, |
| 2586 | px, s, NULL, AN_RES_INSPECT); |
| 2587 | } |
| 2588 | |
| 2589 | /* Lua execution wrapper for http-request. |
| 2590 | * This function uses "hlua_request_act_wrapper" for executing |
| 2591 | * the LUA code. |
| 2592 | */ |
| 2593 | int hlua_http_req_act_wrapper(struct http_req_rule *rule, struct proxy *px, |
| 2594 | struct session *s, struct http_txn *http_txn) |
| 2595 | { |
| 2596 | return hlua_request_act_wrapper((struct hlua_rule *)rule->arg.data, px, |
| 2597 | s, http_txn, AN_REQ_HTTP_PROCESS_FE); |
| 2598 | } |
| 2599 | |
| 2600 | /* Lua execution wrapper for http-response. |
| 2601 | * This function uses "hlua_request_act_wrapper" for executing |
| 2602 | * the LUA code. |
| 2603 | */ |
| 2604 | int hlua_http_res_act_wrapper(struct http_res_rule *rule, struct proxy *px, |
| 2605 | struct session *s, struct http_txn *http_txn) |
| 2606 | { |
| 2607 | return hlua_request_act_wrapper((struct hlua_rule *)rule->arg.data, px, |
| 2608 | s, http_txn, AN_RES_HTTP_PROCESS_BE); |
| 2609 | } |
| 2610 | |
| 2611 | /* tcp-request <*> configuration wrapper. */ |
| 2612 | static int tcp_req_action_register_lua(const char **args, int *cur_arg, struct proxy *px, |
| 2613 | struct tcp_rule *rule, char **err) |
| 2614 | { |
| 2615 | if (!hlua_parse_rule(args, cur_arg, px, (struct hlua_rule **)&rule->act_prm.data, err)) |
| 2616 | return -1; |
| 2617 | rule->action = TCP_ACT_CUSTOM; |
| 2618 | rule->action_ptr = hlua_tcp_req_act_wrapper; |
| 2619 | return 1; |
| 2620 | } |
| 2621 | |
| 2622 | /* tcp-response <*> configuration wrapper. */ |
| 2623 | static int tcp_res_action_register_lua(const char **args, int *cur_arg, struct proxy *px, |
| 2624 | struct tcp_rule *rule, char **err) |
| 2625 | { |
| 2626 | if (!hlua_parse_rule(args, cur_arg, px, (struct hlua_rule **)&rule->act_prm.data, err)) |
| 2627 | return -1; |
| 2628 | rule->action = TCP_ACT_CUSTOM; |
| 2629 | rule->action_ptr = hlua_tcp_res_act_wrapper; |
| 2630 | return 1; |
| 2631 | } |
| 2632 | |
| 2633 | /* http-request <*> configuration wrapper. */ |
| 2634 | static int http_req_action_register_lua(const char **args, int *cur_arg, struct proxy *px, |
| 2635 | struct http_req_rule *rule, char **err) |
| 2636 | { |
| 2637 | if (!hlua_parse_rule(args, cur_arg, px, (struct hlua_rule **)&rule->arg.data, err)) |
| 2638 | return -1; |
| 2639 | rule->action = HTTP_REQ_ACT_CUSTOM_CONT; |
| 2640 | rule->action_ptr = hlua_http_req_act_wrapper; |
| 2641 | return 1; |
| 2642 | } |
| 2643 | |
| 2644 | /* http-response <*> configuration wrapper. */ |
| 2645 | static int http_res_action_register_lua(const char **args, int *cur_arg, struct proxy *px, |
| 2646 | struct http_res_rule *rule, char **err) |
| 2647 | { |
| 2648 | if (!hlua_parse_rule(args, cur_arg, px, (struct hlua_rule **)&rule->arg.data, err)) |
| 2649 | return -1; |
| 2650 | rule->action = HTTP_RES_ACT_CUSTOM_CONT; |
| 2651 | rule->action_ptr = hlua_http_res_act_wrapper; |
| 2652 | return 1; |
| 2653 | } |
| 2654 | |
Thierry FOURNIER | 6c9b52c | 2015-01-23 15:57:06 +0100 | [diff] [blame] | 2655 | /* This function is called by the main configuration key "lua-load". It loads and |
| 2656 | * execute an lua file during the parsing of the HAProxy configuration file. It is |
| 2657 | * the main lua entry point. |
| 2658 | * |
| 2659 | * This funtion runs with the HAProxy keywords API. It returns -1 if an error is |
| 2660 | * occured, otherwise it returns 0. |
| 2661 | * |
| 2662 | * In some error case, LUA set an error message in top of the stack. This function |
| 2663 | * returns this error message in the HAProxy logs and pop it from the stack. |
| 2664 | */ |
| 2665 | static int hlua_load(char **args, int section_type, struct proxy *curpx, |
| 2666 | struct proxy *defpx, const char *file, int line, |
| 2667 | char **err) |
| 2668 | { |
| 2669 | int error; |
| 2670 | |
| 2671 | /* Just load and compile the file. */ |
| 2672 | error = luaL_loadfile(gL.T, args[1]); |
| 2673 | if (error) { |
| 2674 | memprintf(err, "error in lua file '%s': %s", args[1], lua_tostring(gL.T, -1)); |
| 2675 | lua_pop(gL.T, 1); |
| 2676 | return -1; |
| 2677 | } |
| 2678 | |
| 2679 | /* If no syntax error where detected, execute the code. */ |
| 2680 | error = lua_pcall(gL.T, 0, LUA_MULTRET, 0); |
| 2681 | switch (error) { |
| 2682 | case LUA_OK: |
| 2683 | break; |
| 2684 | case LUA_ERRRUN: |
| 2685 | memprintf(err, "lua runtime error: %s\n", lua_tostring(gL.T, -1)); |
| 2686 | lua_pop(gL.T, 1); |
| 2687 | return -1; |
| 2688 | case LUA_ERRMEM: |
| 2689 | memprintf(err, "lua out of memory error\n"); |
| 2690 | return -1; |
| 2691 | case LUA_ERRERR: |
| 2692 | memprintf(err, "lua message handler error: %s\n", lua_tostring(gL.T, -1)); |
| 2693 | lua_pop(gL.T, 1); |
| 2694 | return -1; |
| 2695 | case LUA_ERRGCMM: |
| 2696 | memprintf(err, "lua garbage collector error: %s\n", lua_tostring(gL.T, -1)); |
| 2697 | lua_pop(gL.T, 1); |
| 2698 | return -1; |
| 2699 | default: |
| 2700 | memprintf(err, "lua unknonwn error: %s\n", lua_tostring(gL.T, -1)); |
| 2701 | lua_pop(gL.T, 1); |
| 2702 | return -1; |
| 2703 | } |
| 2704 | |
| 2705 | return 0; |
| 2706 | } |
| 2707 | |
| 2708 | /* configuration keywords declaration */ |
| 2709 | static struct cfg_kw_list cfg_kws = {{ },{ |
| 2710 | { CFG_GLOBAL, "lua-load", hlua_load }, |
| 2711 | { 0, NULL, NULL }, |
| 2712 | }}; |
| 2713 | |
Thierry FOURNIER | 258d8aa | 2015-02-16 20:23:40 +0100 | [diff] [blame] | 2714 | static struct http_req_action_kw_list http_req_kws = {"lua", { }, { |
| 2715 | { "lua", http_req_action_register_lua }, |
| 2716 | { NULL, NULL } |
| 2717 | }}; |
| 2718 | |
| 2719 | static struct http_res_action_kw_list http_res_kws = {"lua", { }, { |
| 2720 | { "lua", http_res_action_register_lua }, |
| 2721 | { NULL, NULL } |
| 2722 | }}; |
| 2723 | |
| 2724 | static struct tcp_action_kw_list tcp_req_cont_kws = {"lua", { }, { |
| 2725 | { "lua", tcp_req_action_register_lua }, |
| 2726 | { NULL, NULL } |
| 2727 | }}; |
| 2728 | |
| 2729 | static struct tcp_action_kw_list tcp_res_cont_kws = {"lua", { }, { |
| 2730 | { "lua", tcp_res_action_register_lua }, |
| 2731 | { NULL, NULL } |
| 2732 | }}; |
| 2733 | |
Thierry FOURNIER | a4a0f3d | 2015-01-23 12:08:30 +0100 | [diff] [blame] | 2734 | int hlua_post_init() |
| 2735 | { |
| 2736 | struct hlua_init_function *init; |
| 2737 | const char *msg; |
| 2738 | enum hlua_exec ret; |
| 2739 | |
| 2740 | list_for_each_entry(init, &hlua_init_functions, l) { |
| 2741 | lua_rawgeti(gL.T, LUA_REGISTRYINDEX, init->function_ref); |
| 2742 | ret = hlua_ctx_resume(&gL, 0); |
| 2743 | switch (ret) { |
| 2744 | case HLUA_E_OK: |
| 2745 | lua_pop(gL.T, -1); |
| 2746 | return 1; |
| 2747 | case HLUA_E_AGAIN: |
| 2748 | Alert("lua init: yield not allowed.\n"); |
| 2749 | return 0; |
| 2750 | case HLUA_E_ERRMSG: |
| 2751 | msg = lua_tostring(gL.T, -1); |
| 2752 | Alert("lua init: %s.\n", msg); |
| 2753 | return 0; |
| 2754 | case HLUA_E_ERR: |
| 2755 | default: |
| 2756 | Alert("lua init: unknown runtime error.\n"); |
| 2757 | return 0; |
| 2758 | } |
| 2759 | } |
| 2760 | return 1; |
| 2761 | } |
| 2762 | |
Thierry FOURNIER | 6f1fd48 | 2015-01-23 14:06:13 +0100 | [diff] [blame] | 2763 | void hlua_init(void) |
| 2764 | { |
Thierry FOURNIER | 2ba18a2 | 2015-01-23 14:07:08 +0100 | [diff] [blame] | 2765 | int i; |
Thierry FOURNIER | d0fa538 | 2015-02-16 20:14:51 +0100 | [diff] [blame] | 2766 | int idx; |
| 2767 | struct sample_fetch *sf; |
| 2768 | struct hlua_sample_fetch *hsf; |
| 2769 | char *p; |
Thierry FOURNIER | 2ba18a2 | 2015-01-23 14:07:08 +0100 | [diff] [blame] | 2770 | |
Thierry FOURNIER | 9ff7e6e | 2015-01-23 11:08:20 +0100 | [diff] [blame] | 2771 | /* Initialise com signals pool session. */ |
| 2772 | pool2_hlua_com = create_pool("hlua_com", sizeof(struct hlua_com), MEM_F_SHARED); |
| 2773 | |
Thierry FOURNIER | 5b8608f | 2015-02-16 19:43:25 +0100 | [diff] [blame] | 2774 | /* Initialise sleep pool. */ |
| 2775 | pool2_hlua_sleep = create_pool("hlua_sleep", sizeof(struct hlua_sleep), MEM_F_SHARED); |
| 2776 | |
Thierry FOURNIER | 6c9b52c | 2015-01-23 15:57:06 +0100 | [diff] [blame] | 2777 | /* Register configuration keywords. */ |
| 2778 | cfg_register_keywords(&cfg_kws); |
| 2779 | |
Thierry FOURNIER | 258d8aa | 2015-02-16 20:23:40 +0100 | [diff] [blame] | 2780 | /* Register custom HTTP rules. */ |
| 2781 | http_req_keywords_register(&http_req_kws); |
| 2782 | http_res_keywords_register(&http_res_kws); |
| 2783 | tcp_req_cont_keywords_register(&tcp_req_cont_kws); |
| 2784 | tcp_res_cont_keywords_register(&tcp_res_cont_kws); |
| 2785 | |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 2786 | /* Init main lua stack. */ |
| 2787 | gL.Mref = LUA_REFNIL; |
| 2788 | gL.state = HLUA_STOP; |
Thierry FOURNIER | 9ff7e6e | 2015-01-23 11:08:20 +0100 | [diff] [blame] | 2789 | LIST_INIT(&gL.com); |
Thierry FOURNIER | 380d093 | 2015-01-23 14:27:52 +0100 | [diff] [blame] | 2790 | gL.T = luaL_newstate(); |
| 2791 | hlua_sethlua(&gL); |
| 2792 | gL.Tref = LUA_REFNIL; |
| 2793 | gL.task = NULL; |
| 2794 | |
| 2795 | /* Initialise lua. */ |
| 2796 | luaL_openlibs(gL.T); |
Thierry FOURNIER | 2ba18a2 | 2015-01-23 14:07:08 +0100 | [diff] [blame] | 2797 | |
| 2798 | /* |
| 2799 | * |
| 2800 | * Create "core" object. |
| 2801 | * |
| 2802 | */ |
| 2803 | |
| 2804 | /* This integer entry is just used as base value for the object "core". */ |
| 2805 | lua_pushinteger(gL.T, 0); |
| 2806 | |
| 2807 | /* Create and fill the metatable. */ |
| 2808 | lua_newtable(gL.T); |
| 2809 | |
| 2810 | /* Create and fill the __index entry. */ |
| 2811 | lua_pushstring(gL.T, "__index"); |
| 2812 | lua_newtable(gL.T); |
| 2813 | |
| 2814 | /* Push the loglevel constants. */ |
| 2815 | for (i=0; i<NB_LOG_LEVELS; i++) |
| 2816 | hlua_class_const_int(gL.T, log_levels[i], i); |
| 2817 | |
Thierry FOURNIER | a4a0f3d | 2015-01-23 12:08:30 +0100 | [diff] [blame] | 2818 | /* Register special functions. */ |
| 2819 | hlua_class_function(gL.T, "register_init", hlua_register_init); |
Thierry FOURNIER | 24f3353 | 2015-01-23 12:13:00 +0100 | [diff] [blame] | 2820 | hlua_class_function(gL.T, "register_task", hlua_register_task); |
Thierry FOURNIER | fa0e5dd | 2015-02-16 20:19:18 +0100 | [diff] [blame] | 2821 | hlua_class_function(gL.T, "register_fetches", hlua_register_fetches); |
Thierry FOURNIER | 9be813f | 2015-02-16 20:21:12 +0100 | [diff] [blame] | 2822 | hlua_class_function(gL.T, "register_converters", hlua_register_converters); |
Thierry FOURNIER | 5b8608f | 2015-02-16 19:43:25 +0100 | [diff] [blame] | 2823 | hlua_class_function(gL.T, "sleep", hlua_sleep); |
| 2824 | hlua_class_function(gL.T, "msleep", hlua_msleep); |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame^] | 2825 | hlua_class_function(gL.T, "tcp", hlua_socket_new); |
Thierry FOURNIER | a4a0f3d | 2015-01-23 12:08:30 +0100 | [diff] [blame] | 2826 | |
Thierry FOURNIER | 2ba18a2 | 2015-01-23 14:07:08 +0100 | [diff] [blame] | 2827 | /* Store the table __index in the metable. */ |
| 2828 | lua_settable(gL.T, -3); |
| 2829 | |
| 2830 | /* Register previous table in the registry with named entry. */ |
| 2831 | lua_pushvalue(gL.T, -1); /* Copy the -1 entry and push it on the stack. */ |
| 2832 | lua_setfield(gL.T, LUA_REGISTRYINDEX, CLASS_CORE); /* register class session. */ |
| 2833 | |
| 2834 | /* Register previous table in the registry with reference. */ |
| 2835 | lua_pushvalue(gL.T, -1); /* Copy the -1 entry and push it on the stack. */ |
| 2836 | class_core_ref = luaL_ref(gL.T, LUA_REGISTRYINDEX); /* reference class session. */ |
| 2837 | |
| 2838 | /* Create new object with class Core. */ |
| 2839 | lua_setmetatable(gL.T, -2); |
| 2840 | lua_setglobal(gL.T, "core"); |
Thierry FOURNIER | 65f34c6 | 2015-02-16 20:11:43 +0100 | [diff] [blame] | 2841 | |
| 2842 | /* |
| 2843 | * |
| 2844 | * Register class TXN |
| 2845 | * |
| 2846 | */ |
| 2847 | |
| 2848 | /* Create and fill the metatable. */ |
| 2849 | lua_newtable(gL.T); |
| 2850 | |
| 2851 | /* Create and fille the __index entry. */ |
| 2852 | lua_pushstring(gL.T, "__index"); |
| 2853 | lua_newtable(gL.T); |
| 2854 | |
Thierry FOURNIER | d0fa538 | 2015-02-16 20:14:51 +0100 | [diff] [blame] | 2855 | /* Browse existing fetches and create the associated |
| 2856 | * object method. |
| 2857 | */ |
| 2858 | sf = NULL; |
| 2859 | while ((sf = sample_fetch_getnext(sf, &idx)) != NULL) { |
| 2860 | |
| 2861 | /* Dont register the keywork if the arguments check function are |
| 2862 | * not safe during the runtime. |
| 2863 | */ |
| 2864 | if ((sf->val_args != NULL) && |
| 2865 | (sf->val_args != val_payload_lv) && |
| 2866 | (sf->val_args != val_hdr)) |
| 2867 | continue; |
| 2868 | |
| 2869 | /* gL.Tua doesn't support '.' and '-' in the function names, replace it |
| 2870 | * by an underscore. |
| 2871 | */ |
| 2872 | strncpy(trash.str, sf->kw, trash.size); |
| 2873 | trash.str[trash.size - 1] = '\0'; |
| 2874 | for (p = trash.str; *p; p++) |
| 2875 | if (*p == '.' || *p == '-' || *p == '+') |
| 2876 | *p = '_'; |
| 2877 | |
| 2878 | /* Register the function. */ |
| 2879 | lua_pushstring(gL.T, trash.str); |
| 2880 | hsf = lua_newuserdata(gL.T, sizeof(struct hlua_sample_fetch)); |
| 2881 | hsf->f = sf; |
| 2882 | lua_pushcclosure(gL.T, hlua_run_sample_fetch, 1); |
| 2883 | lua_settable(gL.T, -3); |
| 2884 | } |
| 2885 | |
Thierry FOURNIER | 05c0b8a | 2015-02-25 11:43:21 +0100 | [diff] [blame] | 2886 | /* Register Lua functions. */ |
Thierry FOURNIER | 9a819e7 | 2015-02-16 20:22:55 +0100 | [diff] [blame] | 2887 | hlua_class_function(gL.T, "get_headers", hlua_session_getheaders); |
Thierry FOURNIER | 05c0b8a | 2015-02-25 11:43:21 +0100 | [diff] [blame] | 2888 | hlua_class_function(gL.T, "set_priv", hlua_setpriv); |
| 2889 | hlua_class_function(gL.T, "get_priv", hlua_getpriv); |
| 2890 | |
Thierry FOURNIER | 65f34c6 | 2015-02-16 20:11:43 +0100 | [diff] [blame] | 2891 | lua_settable(gL.T, -3); |
| 2892 | |
| 2893 | /* Register previous table in the registry with reference and named entry. */ |
| 2894 | lua_pushvalue(gL.T, -1); /* Copy the -1 entry and push it on the stack. */ |
| 2895 | lua_setfield(gL.T, LUA_REGISTRYINDEX, CLASS_TXN); /* register class session. */ |
| 2896 | class_txn_ref = luaL_ref(gL.T, LUA_REGISTRYINDEX); /* reference class session. */ |
Thierry FOURNIER | 7e7ac32 | 2015-02-16 19:27:16 +0100 | [diff] [blame^] | 2897 | |
| 2898 | /* |
| 2899 | * |
| 2900 | * Register class Socket |
| 2901 | * |
| 2902 | */ |
| 2903 | |
| 2904 | /* Create and fill the metatable. */ |
| 2905 | lua_newtable(gL.T); |
| 2906 | |
| 2907 | /* Create and fille the __index entry. */ |
| 2908 | lua_pushstring(gL.T, "__index"); |
| 2909 | lua_newtable(gL.T); |
| 2910 | |
| 2911 | hlua_class_function(gL.T, "connect_ssl", hlua_socket_connect_ssl); |
| 2912 | hlua_class_function(gL.T, "connect", hlua_socket_connect); |
| 2913 | hlua_class_function(gL.T, "send", hlua_socket_send); |
| 2914 | hlua_class_function(gL.T, "receive", hlua_socket_receive); |
| 2915 | hlua_class_function(gL.T, "close", hlua_socket_close); |
| 2916 | hlua_class_function(gL.T, "getpeername", hlua_socket_getpeername); |
| 2917 | hlua_class_function(gL.T, "getsockname", hlua_socket_getsockname); |
| 2918 | hlua_class_function(gL.T, "setoption", hlua_socket_setoption); |
| 2919 | hlua_class_function(gL.T, "settimeout", hlua_socket_settimeout); |
| 2920 | |
| 2921 | lua_settable(gL.T, -3); /* Push the last 2 entries in the table at index -3 */ |
| 2922 | |
| 2923 | /* Register the garbage collector entry. */ |
| 2924 | lua_pushstring(gL.T, "__gc"); |
| 2925 | lua_pushcclosure(gL.T, hlua_socket_gc, 0); |
| 2926 | lua_settable(gL.T, -3); /* Push the last 2 entries in the table at index -3 */ |
| 2927 | |
| 2928 | /* Register previous table in the registry with reference and named entry. */ |
| 2929 | lua_pushvalue(gL.T, -1); /* Copy the -1 entry and push it on the stack. */ |
| 2930 | lua_pushvalue(gL.T, -1); /* Copy the -1 entry and push it on the stack. */ |
| 2931 | lua_setfield(gL.T, LUA_REGISTRYINDEX, CLASS_SOCKET); /* register class socket. */ |
| 2932 | class_socket_ref = luaL_ref(gL.T, LUA_REGISTRYINDEX); /* reference class socket. */ |
| 2933 | |
| 2934 | /* Proxy and server configuration initialisation. */ |
| 2935 | memset(&socket_proxy, 0, sizeof(socket_proxy)); |
| 2936 | init_new_proxy(&socket_proxy); |
| 2937 | socket_proxy.parent = NULL; |
| 2938 | socket_proxy.last_change = now.tv_sec; |
| 2939 | socket_proxy.id = "LUA-SOCKET"; |
| 2940 | socket_proxy.cap = PR_CAP_FE | PR_CAP_BE; |
| 2941 | socket_proxy.maxconn = 0; |
| 2942 | socket_proxy.accept = NULL; |
| 2943 | socket_proxy.options2 |= PR_O2_INDEPSTR; |
| 2944 | socket_proxy.srv = NULL; |
| 2945 | socket_proxy.conn_retries = 0; |
| 2946 | socket_proxy.timeout.connect = 5000; /* By default the timeout connection is 5s. */ |
| 2947 | |
| 2948 | /* Init TCP server: unchanged parameters */ |
| 2949 | memset(&socket_tcp, 0, sizeof(socket_tcp)); |
| 2950 | socket_tcp.next = NULL; |
| 2951 | socket_tcp.proxy = &socket_proxy; |
| 2952 | socket_tcp.obj_type = OBJ_TYPE_SERVER; |
| 2953 | LIST_INIT(&socket_tcp.actconns); |
| 2954 | LIST_INIT(&socket_tcp.pendconns); |
| 2955 | socket_tcp.state = SRV_ST_RUNNING; /* early server setup */ |
| 2956 | socket_tcp.last_change = 0; |
| 2957 | socket_tcp.id = "LUA-TCP-CONN"; |
| 2958 | socket_tcp.check.state &= ~CHK_ST_ENABLED; /* Disable health checks. */ |
| 2959 | socket_tcp.agent.state &= ~CHK_ST_ENABLED; /* Disable health checks. */ |
| 2960 | socket_tcp.pp_opts = 0; /* Remove proxy protocol. */ |
| 2961 | |
| 2962 | /* XXX: Copy default parameter from default server, |
| 2963 | * but the default server is not initialized. |
| 2964 | */ |
| 2965 | socket_tcp.maxqueue = socket_proxy.defsrv.maxqueue; |
| 2966 | socket_tcp.minconn = socket_proxy.defsrv.minconn; |
| 2967 | socket_tcp.maxconn = socket_proxy.defsrv.maxconn; |
| 2968 | socket_tcp.slowstart = socket_proxy.defsrv.slowstart; |
| 2969 | socket_tcp.onerror = socket_proxy.defsrv.onerror; |
| 2970 | socket_tcp.onmarkeddown = socket_proxy.defsrv.onmarkeddown; |
| 2971 | socket_tcp.onmarkedup = socket_proxy.defsrv.onmarkedup; |
| 2972 | socket_tcp.consecutive_errors_limit = socket_proxy.defsrv.consecutive_errors_limit; |
| 2973 | socket_tcp.uweight = socket_proxy.defsrv.iweight; |
| 2974 | socket_tcp.iweight = socket_proxy.defsrv.iweight; |
| 2975 | |
| 2976 | socket_tcp.check.status = HCHK_STATUS_INI; |
| 2977 | socket_tcp.check.rise = socket_proxy.defsrv.check.rise; |
| 2978 | socket_tcp.check.fall = socket_proxy.defsrv.check.fall; |
| 2979 | socket_tcp.check.health = socket_tcp.check.rise; /* socket, but will fall down at first failure */ |
| 2980 | socket_tcp.check.server = &socket_tcp; |
| 2981 | |
| 2982 | socket_tcp.agent.status = HCHK_STATUS_INI; |
| 2983 | socket_tcp.agent.rise = socket_proxy.defsrv.agent.rise; |
| 2984 | socket_tcp.agent.fall = socket_proxy.defsrv.agent.fall; |
| 2985 | socket_tcp.agent.health = socket_tcp.agent.rise; /* socket, but will fall down at first failure */ |
| 2986 | socket_tcp.agent.server = &socket_tcp; |
| 2987 | |
| 2988 | socket_tcp.xprt = &raw_sock; |
| 2989 | |
| 2990 | #ifdef USE_OPENSSL |
| 2991 | |
| 2992 | char *args[4]; |
| 2993 | struct srv_kw *kw; |
| 2994 | int tmp_error; |
| 2995 | char *error; |
| 2996 | |
| 2997 | /* Init TCP server: unchanged parameters */ |
| 2998 | memset(&socket_ssl, 0, sizeof(socket_ssl)); |
| 2999 | socket_ssl.next = NULL; |
| 3000 | socket_ssl.proxy = &socket_proxy; |
| 3001 | socket_ssl.obj_type = OBJ_TYPE_SERVER; |
| 3002 | LIST_INIT(&socket_ssl.actconns); |
| 3003 | LIST_INIT(&socket_ssl.pendconns); |
| 3004 | socket_ssl.state = SRV_ST_RUNNING; /* early server setup */ |
| 3005 | socket_ssl.last_change = 0; |
| 3006 | socket_ssl.id = "LUA-SSL-CONN"; |
| 3007 | socket_ssl.check.state &= ~CHK_ST_ENABLED; /* Disable health checks. */ |
| 3008 | socket_ssl.agent.state &= ~CHK_ST_ENABLED; /* Disable health checks. */ |
| 3009 | socket_ssl.pp_opts = 0; /* Remove proxy protocol. */ |
| 3010 | |
| 3011 | /* XXX: Copy default parameter from default server, |
| 3012 | * but the default server is not initialized. |
| 3013 | */ |
| 3014 | socket_ssl.maxqueue = socket_proxy.defsrv.maxqueue; |
| 3015 | socket_ssl.minconn = socket_proxy.defsrv.minconn; |
| 3016 | socket_ssl.maxconn = socket_proxy.defsrv.maxconn; |
| 3017 | socket_ssl.slowstart = socket_proxy.defsrv.slowstart; |
| 3018 | socket_ssl.onerror = socket_proxy.defsrv.onerror; |
| 3019 | socket_ssl.onmarkeddown = socket_proxy.defsrv.onmarkeddown; |
| 3020 | socket_ssl.onmarkedup = socket_proxy.defsrv.onmarkedup; |
| 3021 | socket_ssl.consecutive_errors_limit = socket_proxy.defsrv.consecutive_errors_limit; |
| 3022 | socket_ssl.uweight = socket_proxy.defsrv.iweight; |
| 3023 | socket_ssl.iweight = socket_proxy.defsrv.iweight; |
| 3024 | |
| 3025 | socket_ssl.check.status = HCHK_STATUS_INI; |
| 3026 | socket_ssl.check.rise = socket_proxy.defsrv.check.rise; |
| 3027 | socket_ssl.check.fall = socket_proxy.defsrv.check.fall; |
| 3028 | socket_ssl.check.health = socket_ssl.check.rise; /* socket, but will fall down at first failure */ |
| 3029 | socket_ssl.check.server = &socket_ssl; |
| 3030 | |
| 3031 | socket_ssl.agent.status = HCHK_STATUS_INI; |
| 3032 | socket_ssl.agent.rise = socket_proxy.defsrv.agent.rise; |
| 3033 | socket_ssl.agent.fall = socket_proxy.defsrv.agent.fall; |
| 3034 | socket_ssl.agent.health = socket_ssl.agent.rise; /* socket, but will fall down at first failure */ |
| 3035 | socket_ssl.agent.server = &socket_ssl; |
| 3036 | |
| 3037 | socket_ssl.xprt = &raw_sock; |
| 3038 | |
| 3039 | args[0] = "ssl"; |
| 3040 | args[1] = "verify"; |
| 3041 | args[2] = "none"; |
| 3042 | args[3] = NULL; |
| 3043 | |
| 3044 | for (idx=0; idx<3; idx++) { |
| 3045 | if ((kw = srv_find_kw(args[idx])) != NULL) { /* Maybe it's registered server keyword */ |
| 3046 | /* |
| 3047 | * |
| 3048 | * If the keyword is not known, we can search in the registered |
| 3049 | * server keywords. This is usefull to configure special SSL |
| 3050 | * features like client certificates and ssl_verify. |
| 3051 | * |
| 3052 | */ |
| 3053 | tmp_error = kw->parse(args, &idx, &socket_proxy, &socket_ssl, &error); |
| 3054 | if (tmp_error != 0) { |
| 3055 | fprintf(stderr, "INTERNAL ERROR: %s\n", error); |
| 3056 | abort(); /* This must be never arrives because the command line |
| 3057 | not editable by the user. */ |
| 3058 | } |
| 3059 | idx += kw->skip; |
| 3060 | } |
| 3061 | } |
| 3062 | |
| 3063 | /* Initialize SSL server. */ |
| 3064 | if (socket_ssl.xprt == &ssl_sock) { |
| 3065 | socket_ssl.use_ssl = 1; |
| 3066 | ssl_sock_prepare_srv_ctx(&socket_ssl, &socket_proxy); |
| 3067 | } |
| 3068 | #endif |
Thierry FOURNIER | 6f1fd48 | 2015-01-23 14:06:13 +0100 | [diff] [blame] | 3069 | } |