Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1 | /* |
| 2 | * HTT/1 mux-demux for connections |
| 3 | * |
| 4 | * Copyright 2018 Christopher Faulet <cfaulet@haproxy.com> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License |
| 8 | * as published by the Free Software Foundation; either version |
| 9 | * 2 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | */ |
| 12 | #include <common/cfgparse.h> |
| 13 | #include <common/config.h> |
| 14 | |
Christopher Faulet | 1be55f9 | 2018-10-02 15:59:23 +0200 | [diff] [blame] | 15 | #include <types/pipe.h> |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 16 | #include <types/proxy.h> |
| 17 | #include <types/session.h> |
| 18 | |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 19 | #include <proto/connection.h> |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 20 | #include <proto/h1.h> |
| 21 | #include <proto/log.h> |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 22 | #include <proto/stream.h> |
| 23 | #include <proto/stream_interface.h> |
| 24 | |
| 25 | /* |
| 26 | * H1 Connection flags (32 bits) |
| 27 | */ |
| 28 | #define H1C_F_NONE 0x00000000 |
| 29 | |
| 30 | /* Flags indicating why writing output data are blocked */ |
| 31 | #define H1C_F_OUT_ALLOC 0x00000001 /* mux is blocked on lack of output buffer */ |
| 32 | #define H1C_F_OUT_FULL 0x00000002 /* mux is blocked on output buffer full */ |
| 33 | /* 0x00000004 - 0x00000008 unused */ |
| 34 | |
| 35 | /* Flags indicating why reading input data are blocked. */ |
| 36 | #define H1C_F_IN_ALLOC 0x00000010 /* mux is blocked on lack of input buffer */ |
| 37 | #define H1C_F_IN_FULL 0x00000020 /* mux is blocked on input buffer full */ |
| 38 | /* 0x00000040 - 0x00000080 unused */ |
| 39 | |
| 40 | /* Flags indicating why parsing data are blocked */ |
| 41 | #define H1C_F_RX_ALLOC 0x00000100 /* mux is blocked on lack of rx buffer */ |
| 42 | #define H1C_F_RX_FULL 0x00000200 /* mux is blocked on rx buffer full */ |
| 43 | /* 0x00000400 - 0x00000800 unused */ |
| 44 | |
| 45 | #define H1C_F_CS_ERROR 0x00001000 /* connection must be closed ASAP because an error occurred */ |
| 46 | #define H1C_F_CS_SHUTW_NOW 0x00002000 /* connection must be shut down for writes ASAP */ |
| 47 | #define H1C_F_CS_SHUTW 0x00004000 /* connection is already shut down */ |
| 48 | |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 49 | #define H1C_F_WAIT_NEXT_REQ 0x00010000 /* waiting for the next request to start, use keep-alive timeout */ |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 50 | |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 51 | /* |
| 52 | * H1 Stream flags (32 bits) |
| 53 | */ |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 54 | #define H1S_F_NONE 0x00000000 |
| 55 | #define H1S_F_ERROR 0x00000001 /* An error occurred on the H1 stream */ |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 56 | #define H1S_F_REQ_ERROR 0x00000002 /* An error occurred during the request parsing/xfer */ |
| 57 | #define H1S_F_RES_ERROR 0x00000004 /* An error occurred during the response parsing/xfer */ |
| 58 | #define H1S_F_MSG_XFERED 0x00000008 /* current message was transferred to the data layer */ |
| 59 | #define H1S_F_WANT_KAL 0x00000010 |
| 60 | #define H1S_F_WANT_TUN 0x00000020 |
| 61 | #define H1S_F_WANT_CLO 0x00000040 |
| 62 | #define H1S_F_WANT_MSK 0x00000070 |
| 63 | #define H1S_F_NOT_FIRST 0x00000080 /* The H1 stream is not the first one */ |
Christopher Faulet | 1be55f9 | 2018-10-02 15:59:23 +0200 | [diff] [blame] | 64 | #define H1S_F_BUF_FLUSH 0x00000100 /* Flush input buffers (ibuf and rxbuf) and don't read more data */ |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 65 | |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 66 | |
| 67 | /* H1 connection descriptor */ |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 68 | struct h1c { |
| 69 | struct connection *conn; |
| 70 | struct proxy *px; |
| 71 | uint32_t flags; /* Connection flags: H1C_F_* */ |
| 72 | |
| 73 | struct buffer ibuf; /* Input buffer to store data before parsing */ |
| 74 | struct buffer obuf; /* Output buffer to store data after reformatting */ |
| 75 | |
| 76 | struct buffer_wait buf_wait; /* Wait list for buffer allocation */ |
| 77 | struct wait_event wait_event; /* To be used if we're waiting for I/Os */ |
| 78 | |
| 79 | struct h1s *h1s; /* H1 stream descriptor */ |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 80 | struct task *task; /* timeout management task */ |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 81 | |
| 82 | int idle_exp; /* expiration date for idle connections, in ticks (client-side only)*/ |
| 83 | int http_exp; /* expiration date for HTTP headers parsing (client-side only) */ |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 84 | }; |
| 85 | |
| 86 | /* H1 stream descriptor */ |
| 87 | struct h1s { |
| 88 | struct h1c *h1c; |
| 89 | struct conn_stream *cs; |
| 90 | uint32_t flags; /* Connection flags: H1S_F_* */ |
| 91 | |
| 92 | struct buffer rxbuf; /*receive buffer, always valid (buf_empty or real buffer) */ |
| 93 | |
| 94 | struct wait_event *recv_wait; /* Address of the wait_event the conn_stream associated is waiting on */ |
| 95 | struct wait_event *send_wait; /* Address of the wait_event the conn_stream associated is waiting on */ |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 96 | |
| 97 | struct h1m req; |
| 98 | struct h1m res; |
| 99 | |
| 100 | enum http_meth_t meth; /* HTTP resquest method */ |
| 101 | uint16_t status; /* HTTP response status */ |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 102 | }; |
| 103 | |
| 104 | /* the h1c and h1s pools */ |
| 105 | static struct pool_head *pool_head_h1c; |
| 106 | static struct pool_head *pool_head_h1s; |
| 107 | |
| 108 | static struct task *h1_timeout_task(struct task *t, void *context, unsigned short state); |
| 109 | static int h1_recv(struct h1c *h1c); |
| 110 | static int h1_send(struct h1c *h1c); |
| 111 | static int h1_process(struct h1c *h1c); |
| 112 | static struct task *h1_io_cb(struct task *t, void *ctx, unsigned short state); |
| 113 | static void h1_shutw_conn(struct connection *conn); |
| 114 | |
| 115 | /*****************************************************/ |
| 116 | /* functions below are for dynamic buffer management */ |
| 117 | /*****************************************************/ |
| 118 | /* |
| 119 | * Indicates whether or not the we may call the h1_recv() function to |
| 120 | * attempt to receive data into the buffer and/or parse pending data. The |
| 121 | * condition is a bit complex due to some API limits for now. The rules are the |
| 122 | * following : |
| 123 | * - if an error or a shutdown was detected on the connection and the buffer |
| 124 | * is empty, we must not attempt to receive |
| 125 | * - if the input buffer failed to be allocated, we must not try to receive |
| 126 | * and we know there is nothing pending |
| 127 | * - if no flag indicates a blocking condition, we may attempt to receive, |
| 128 | * regardless of whether the input buffer is full or not, so that only de |
| 129 | * receiving part decides whether or not to block. This is needed because |
| 130 | * the connection API indeed prevents us from re-enabling receipt that is |
| 131 | * already enabled in a polled state, so we must always immediately stop as |
| 132 | * soon as the mux can't proceed so as never to hit an end of read with data |
| 133 | * pending in the buffers. |
| 134 | * - otherwise must may not attempt to receive |
| 135 | */ |
| 136 | static inline int h1_recv_allowed(const struct h1c *h1c) |
| 137 | { |
| 138 | if (b_data(&h1c->ibuf) == 0 && |
| 139 | (h1c->flags & (H1C_F_CS_ERROR||H1C_F_CS_SHUTW) || |
| 140 | h1c->conn->flags & CO_FL_ERROR || |
| 141 | conn_xprt_read0_pending(h1c->conn))) |
| 142 | return 0; |
| 143 | |
| 144 | if (!(h1c->flags & (H1C_F_IN_ALLOC|H1C_F_IN_FULL))) |
| 145 | return 1; |
| 146 | |
| 147 | return 0; |
| 148 | } |
| 149 | |
| 150 | /* |
| 151 | * Tries to grab a buffer and to re-enables processing on mux <target>. The h1 |
| 152 | * flags are used to figure what buffer was requested. It returns 1 if the |
| 153 | * allocation succeeds, in which case the connection is woken up, or 0 if it's |
| 154 | * impossible to wake up and we prefer to be woken up later. |
| 155 | */ |
| 156 | static int h1_buf_available(void *target) |
| 157 | { |
| 158 | struct h1c *h1c = target; |
| 159 | |
| 160 | if ((h1c->flags & H1C_F_IN_ALLOC) && b_alloc_margin(&h1c->ibuf, 0)) { |
| 161 | h1c->flags &= ~H1C_F_IN_ALLOC; |
| 162 | if (h1_recv_allowed(h1c)) |
| 163 | tasklet_wakeup(h1c->wait_event.task); |
| 164 | return 1; |
| 165 | } |
| 166 | |
| 167 | if ((h1c->flags & H1C_F_OUT_ALLOC) && b_alloc_margin(&h1c->obuf, 0)) { |
| 168 | h1c->flags &= ~H1C_F_OUT_ALLOC; |
| 169 | tasklet_wakeup(h1c->wait_event.task); |
| 170 | return 1; |
| 171 | } |
| 172 | |
| 173 | if ((h1c->flags & H1C_F_RX_ALLOC) && h1c->h1s && b_alloc_margin(&h1c->h1s->rxbuf, 0)) { |
| 174 | h1c->flags &= ~H1C_F_RX_ALLOC; |
| 175 | if (h1_recv_allowed(h1c)) |
| 176 | tasklet_wakeup(h1c->wait_event.task); |
| 177 | return 1; |
| 178 | } |
| 179 | |
| 180 | return 0; |
| 181 | } |
| 182 | |
| 183 | /* |
| 184 | * Allocate a buffer. If if fails, it adds the mux in buffer wait queue. |
| 185 | */ |
| 186 | static inline struct buffer *h1_get_buf(struct h1c *h1c, struct buffer *bptr) |
| 187 | { |
| 188 | struct buffer *buf = NULL; |
| 189 | |
| 190 | if (likely(LIST_ISEMPTY(&h1c->buf_wait.list)) && |
| 191 | unlikely((buf = b_alloc_margin(bptr, 0)) == NULL)) { |
| 192 | h1c->buf_wait.target = h1c; |
| 193 | h1c->buf_wait.wakeup_cb = h1_buf_available; |
| 194 | HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock); |
| 195 | LIST_ADDQ(&buffer_wq, &h1c->buf_wait.list); |
| 196 | HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock); |
| 197 | __conn_xprt_stop_recv(h1c->conn); |
| 198 | } |
| 199 | return buf; |
| 200 | } |
| 201 | |
| 202 | /* |
| 203 | * Release a buffer, if any, and try to wake up entities waiting in the buffer |
| 204 | * wait queue. |
| 205 | */ |
| 206 | static inline void h1_release_buf(struct h1c *h1c, struct buffer *bptr) |
| 207 | { |
| 208 | if (bptr->size) { |
| 209 | b_free(bptr); |
| 210 | offer_buffers(h1c->buf_wait.target, tasks_run_queue); |
| 211 | } |
| 212 | } |
| 213 | |
| 214 | static int h1_avail_streams(struct connection *conn) |
| 215 | { |
| 216 | struct h1c *h1c = conn->mux_ctx; |
| 217 | |
| 218 | return h1c->h1s ? 0 : 1; |
| 219 | } |
| 220 | |
| 221 | |
| 222 | /*****************************************************************/ |
| 223 | /* functions below are dedicated to the mux setup and management */ |
| 224 | /*****************************************************************/ |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 225 | static struct h1s *h1s_create(struct h1c *h1c, struct conn_stream *cs) |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 226 | { |
| 227 | struct h1s *h1s; |
| 228 | |
| 229 | h1s = pool_alloc(pool_head_h1s); |
| 230 | if (!h1s) |
| 231 | goto end; |
| 232 | |
| 233 | h1s->h1c = h1c; |
| 234 | h1c->h1s = h1s; |
| 235 | |
| 236 | h1s->cs = NULL; |
| 237 | h1s->rxbuf = BUF_NULL; |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 238 | h1s->flags = H1S_F_NONE; |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 239 | |
| 240 | h1s->recv_wait = NULL; |
| 241 | h1s->send_wait = NULL; |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 242 | |
| 243 | h1m_init_req(&h1s->req); |
| 244 | h1m_init_res(&h1s->res); |
| 245 | |
| 246 | h1s->status = 0; |
| 247 | h1s->meth = HTTP_METH_OTHER; |
| 248 | |
| 249 | if (!conn_is_back(h1c->conn)) { |
| 250 | if (h1c->px->options2 & PR_O2_REQBUG_OK) |
| 251 | h1s->req.err_pos = -1; |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 252 | |
| 253 | if (h1c->flags & H1C_F_WAIT_NEXT_REQ) |
| 254 | h1s->flags |= H1S_F_NOT_FIRST; |
| 255 | h1c->flags &= ~H1C_F_WAIT_NEXT_REQ; |
| 256 | h1c->http_exp = tick_add_ifset(now_ms, h1c->px->timeout.httpreq); |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 257 | } |
| 258 | else { |
| 259 | if (h1c->px->options2 & PR_O2_RSPBUG_OK) |
| 260 | h1s->res.err_pos = -1; |
| 261 | } |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 262 | |
| 263 | /* If a conn_stream already exists, attach it to this H1S */ |
| 264 | if (cs) { |
| 265 | cs->ctx = h1s; |
| 266 | h1s->cs = cs; |
| 267 | } |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 268 | end: |
| 269 | return h1s; |
| 270 | } |
| 271 | |
| 272 | static void h1s_destroy(struct h1s *h1s) |
| 273 | { |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 274 | if (h1s) { |
| 275 | struct h1c *h1c = h1s->h1c; |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 276 | |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 277 | h1c->h1s = NULL; |
| 278 | h1c->flags &= ~(H1C_F_RX_FULL|H1C_F_RX_ALLOC); |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 279 | |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 280 | if (h1s->recv_wait != NULL) |
| 281 | h1s->recv_wait->wait_reason &= ~SUB_CAN_RECV; |
| 282 | if (h1s->send_wait != NULL) |
| 283 | h1s->send_wait->wait_reason &= ~SUB_CAN_SEND; |
| 284 | |
| 285 | if (!conn_is_back(h1c->conn)) { |
| 286 | h1c->flags |= H1C_F_WAIT_NEXT_REQ; |
| 287 | h1c->http_exp = tick_add_ifset(now_ms, h1c->px->timeout.httpka); |
| 288 | } |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 289 | |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 290 | h1_release_buf(h1c, &h1s->rxbuf); |
| 291 | cs_free(h1s->cs); |
| 292 | pool_free(pool_head_h1s, h1s); |
| 293 | } |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 294 | } |
| 295 | |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 296 | static struct conn_stream *h1s_new_cs(struct h1s *h1s) |
| 297 | { |
| 298 | struct conn_stream *cs; |
| 299 | |
| 300 | cs = cs_new(h1s->h1c->conn); |
| 301 | if (!cs) |
| 302 | goto err; |
| 303 | h1s->cs = cs; |
| 304 | cs->ctx = h1s; |
| 305 | |
| 306 | if (h1s->flags & H1S_F_NOT_FIRST) |
| 307 | cs->flags |= CS_FL_NOT_FIRST; |
| 308 | |
| 309 | if (stream_create_from_cs(cs) < 0) |
| 310 | goto err; |
| 311 | return cs; |
| 312 | |
| 313 | err: |
| 314 | cs_free(cs); |
| 315 | h1s->cs = NULL; |
| 316 | return NULL; |
| 317 | } |
| 318 | |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 319 | /* |
| 320 | * Initialize the mux once it's attached. It is expected that conn->mux_ctx |
| 321 | * points to the existing conn_stream (for outgoing connections) or NULL (for |
| 322 | * incoming ones). Returns < 0 on error. |
| 323 | */ |
| 324 | static int h1_init(struct connection *conn, struct proxy *proxy) |
| 325 | { |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 326 | struct h1c *h1c; |
| 327 | struct task *t = NULL; |
| 328 | |
| 329 | h1c = pool_alloc(pool_head_h1c); |
| 330 | if (!h1c) |
| 331 | goto fail_h1c; |
| 332 | h1c->conn = conn; |
| 333 | h1c->px = proxy; |
| 334 | |
| 335 | h1c->flags = H1C_F_NONE; |
| 336 | h1c->ibuf = BUF_NULL; |
| 337 | h1c->obuf = BUF_NULL; |
| 338 | h1c->h1s = NULL; |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 339 | |
| 340 | t = task_new(tid_bit); |
| 341 | if (!t) |
| 342 | goto fail; |
| 343 | h1c->task = t; |
| 344 | t->process = h1_timeout_task; |
| 345 | t->context = h1c; |
| 346 | t->expire = TICK_ETERNITY; |
| 347 | |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 348 | h1c->idle_exp = TICK_ETERNITY; |
| 349 | h1c->http_exp = TICK_ETERNITY; |
| 350 | |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 351 | LIST_INIT(&h1c->buf_wait.list); |
| 352 | h1c->wait_event.task = tasklet_new(); |
| 353 | if (!h1c->wait_event.task) |
| 354 | goto fail; |
| 355 | h1c->wait_event.task->process = h1_io_cb; |
| 356 | h1c->wait_event.task->context = h1c; |
| 357 | h1c->wait_event.wait_reason = 0; |
| 358 | |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 359 | /* Always Create a new H1S */ |
| 360 | if (!h1s_create(h1c, conn->mux_ctx)) |
| 361 | goto fail; |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 362 | |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 363 | conn->mux_ctx = h1c; |
| 364 | task_wakeup(t, TASK_WOKEN_INIT); |
| 365 | |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 366 | /* Try to read, if nothing is available yet we'll just subscribe */ |
| 367 | if (h1_recv(h1c)) |
| 368 | h1_process(h1c); |
| 369 | |
| 370 | /* mux->wake will be called soon to complete the operation */ |
| 371 | return 0; |
| 372 | |
| 373 | fail: |
| 374 | if (t) |
| 375 | task_free(t); |
| 376 | if (h1c && h1c->wait_event.task) |
| 377 | tasklet_free(h1c->wait_event.task); |
| 378 | pool_free(pool_head_h1c, h1c); |
| 379 | fail_h1c: |
| 380 | return -1; |
| 381 | } |
| 382 | |
| 383 | |
| 384 | /* release function for a connection. This one should be called to free all |
| 385 | * resources allocated to the mux. |
| 386 | */ |
| 387 | static void h1_release(struct connection *conn) |
| 388 | { |
| 389 | struct h1c *h1c = conn->mux_ctx; |
| 390 | |
| 391 | LIST_DEL(&conn->list); |
| 392 | |
| 393 | if (h1c) { |
| 394 | if (!LIST_ISEMPTY(&h1c->buf_wait.list)) { |
| 395 | HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock); |
| 396 | LIST_DEL(&h1c->buf_wait.list); |
| 397 | LIST_INIT(&h1c->buf_wait.list); |
| 398 | HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock); |
| 399 | } |
| 400 | |
| 401 | h1_release_buf(h1c, &h1c->ibuf); |
| 402 | h1_release_buf(h1c, &h1c->obuf); |
| 403 | |
| 404 | if (h1c->task) { |
| 405 | h1c->task->context = NULL; |
| 406 | task_wakeup(h1c->task, TASK_WOKEN_OTHER); |
| 407 | h1c->task = NULL; |
| 408 | } |
| 409 | if (h1c->wait_event.task) |
| 410 | tasklet_free(h1c->wait_event.task); |
| 411 | |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 412 | h1s_destroy(h1c->h1s); |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 413 | if (h1c->wait_event.wait_reason != 0) |
| 414 | conn->xprt->unsubscribe(conn, h1c->wait_event.wait_reason, |
| 415 | &h1c->wait_event); |
| 416 | pool_free(pool_head_h1c, h1c); |
| 417 | } |
| 418 | |
| 419 | conn->mux = NULL; |
| 420 | conn->mux_ctx = NULL; |
| 421 | |
| 422 | conn_stop_tracking(conn); |
| 423 | conn_full_close(conn); |
| 424 | if (conn->destroy_cb) |
| 425 | conn->destroy_cb(conn); |
| 426 | conn_free(conn); |
| 427 | } |
| 428 | |
| 429 | /******************************************************/ |
| 430 | /* functions below are for the H1 protocol processing */ |
| 431 | /******************************************************/ |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 432 | /* |
| 433 | * Set the appropriate error message. It first tries to get it from the proxy if |
| 434 | * it exists. Otherwise, it falls back on default one. |
| 435 | */ |
| 436 | static void h1_cpy_error_message(struct h1c *h1c, struct buffer *dst, int status) |
| 437 | { |
| 438 | const int msgnum = http_get_status_idx(status); |
| 439 | const struct buffer *err; |
| 440 | |
| 441 | err = (h1c->px->errmsg[msgnum].area |
| 442 | ? &h1c->px->errmsg[msgnum] |
| 443 | : &http_err_chunks[msgnum]); |
| 444 | b_putblk(dst, b_head(err), b_data(err)); |
| 445 | } |
| 446 | |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 447 | /* Remove all "Connection:" headers from the buffer <buf>, using the array of |
| 448 | * parsed headers <hdrs>. It returns the number of bytes removed. This should |
| 449 | * happen just after the headers parsing, so the buffer should not wrap. At the |
| 450 | * ends, all entries of <hdrs> reamin valid. |
| 451 | */ |
| 452 | static int h1_remove_conn_hdrs(struct h1m *h1m, struct http_hdr *hdrs, struct buffer *buf) |
| 453 | { |
| 454 | int src, dst, delta; |
| 455 | |
| 456 | delta = 0; |
| 457 | for (src = 0, dst = 0; hdrs[src].n.len; src++) { |
| 458 | |
| 459 | if (hdrs[src].n.ptr >= buf->area && hdrs[src].n.ptr < buf->area + buf->size) |
| 460 | hdrs[src].n.ptr += delta; |
| 461 | hdrs[src].v.ptr += delta; |
| 462 | |
| 463 | if (!isteqi(hdrs[src].n, ist("Connection"))) { |
| 464 | if (src != dst) |
| 465 | hdrs[dst] = hdrs[src]; |
| 466 | dst++; |
| 467 | continue; |
| 468 | } |
| 469 | delta += b_rep_blk(buf, hdrs[src].n.ptr, hdrs[src+1].n.ptr+delta, NULL, 0); |
| 470 | } |
| 471 | |
| 472 | /* Don't forget to copy EOH */ |
| 473 | hdrs[src].n.ptr += delta; |
| 474 | hdrs[dst] = hdrs[src]; |
| 475 | |
| 476 | h1m->flags &= ~(H1_MF_CONN_KAL|H1_MF_CONN_CLO); |
| 477 | return delta; |
| 478 | } |
| 479 | |
| 480 | /* Add a "Connection:" header into the buffer <buf>. If <type> is 0, the header |
| 481 | * is set to "keep-alive", otherwise it is set to "close", It returns the number |
| 482 | * of bytes added. This should happen just after the headers parsing, so the |
| 483 | * buffer should not wrap. At the ends, all entries of <hdrs> reamin valid. |
| 484 | */ |
| 485 | static int h1_add_conn_hdrs(struct h1m *h1m, struct http_hdr *hdrs, struct buffer *buf, |
| 486 | int type) |
| 487 | { |
| 488 | const char *conn_hdr; |
| 489 | size_t nlen, vlen; |
| 490 | int i, delta; |
| 491 | |
| 492 | if (type == 0) { /* keep-alive */ |
| 493 | conn_hdr = "Connection: keep-alive\r\n"; |
| 494 | nlen = 10; vlen = 10; |
| 495 | } |
| 496 | else { /* close */ |
| 497 | conn_hdr = "Connection: close\r\n"; |
| 498 | nlen = 10; vlen = 5; |
| 499 | } |
| 500 | |
| 501 | /* Find EOH*/ |
| 502 | for (i = 0; hdrs[i].n.len; i++); |
| 503 | |
| 504 | /* Insert the "Connection: " header */ |
| 505 | delta = b_rep_blk(buf, hdrs[i].n.ptr, hdrs[i].n.ptr, conn_hdr, nlen+vlen+4); |
| 506 | |
| 507 | /* Update the header list */ |
| 508 | http_set_hdr(&hdrs[i], ist2(hdrs[i].n.ptr, nlen), ist2(hdrs[i].n.ptr+nlen+2, vlen)); |
| 509 | http_set_hdr(&hdrs[i+1], ist2(hdrs[i].n.ptr+delta, 0), ist("")); |
| 510 | |
| 511 | return delta; |
| 512 | } |
| 513 | |
| 514 | /* Deduce the connection mode of the client connection, depending on the |
| 515 | * configuration and the H1 message flags. This function is called twice, the |
| 516 | * first time when the request is parsed and the second time when the response |
| 517 | * is parsed. |
| 518 | */ |
| 519 | static void h1_set_cli_conn_mode(struct h1s *h1s, struct h1m *h1m) |
| 520 | { |
| 521 | struct proxy *fe = h1s->h1c->px; |
| 522 | int flag = H1S_F_WANT_KAL; /* For client connection: server-close == keepalive */ |
| 523 | |
| 524 | /* Tunnel mode can only by set on the frontend */ |
| 525 | if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN) |
| 526 | flag = H1S_F_WANT_TUN; |
| 527 | else if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_CLO) |
| 528 | flag = H1S_F_WANT_CLO; |
| 529 | |
| 530 | /* flags order: CLO > SCL > TUN > KAL */ |
| 531 | if ((h1s->flags & H1S_F_WANT_MSK) < flag) |
| 532 | h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | flag; |
| 533 | |
| 534 | if (h1m->flags & H1_MF_RESP) { |
| 535 | /* Either we've established an explicit tunnel, or we're |
| 536 | * switching the protocol. In both cases, we're very unlikely to |
| 537 | * understand the next protocols. We have to switch to tunnel |
| 538 | * mode, so that we transfer the request and responses then let |
| 539 | * this protocol pass unmodified. When we later implement |
| 540 | * specific parsers for such protocols, we'll want to check the |
| 541 | * Upgrade header which contains information about that protocol |
| 542 | * for responses with status 101 (eg: see RFC2817 about TLS). |
| 543 | */ |
| 544 | if ((h1s->meth == HTTP_METH_CONNECT && h1s->status == 200) || |
| 545 | h1s->status == 101) |
| 546 | h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_TUN; |
| 547 | else if (!(h1m->flags & H1_MF_XFER_LEN)) /* no length known => close */ |
| 548 | h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO; |
| 549 | } |
| 550 | else { |
| 551 | if (h1s->flags & H1S_F_WANT_KAL && |
| 552 | (!(h1m->flags & (H1_MF_VER_11|H1_MF_CONN_KAL)) || /* no KA in HTTP/1.0 */ |
| 553 | h1m->flags & H1_MF_CONN_CLO)) /* explicit close */ |
| 554 | h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO; |
| 555 | } |
| 556 | |
| 557 | /* If KAL, check if the frontend is stopping. If yes, switch in CLO mode */ |
| 558 | if (h1s->flags & H1S_F_WANT_KAL && fe->state == PR_STSTOPPED) |
| 559 | h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO; |
| 560 | } |
| 561 | |
| 562 | /* Deduce the connection mode of the client connection, depending on the |
| 563 | * configuration and the H1 message flags. This function is called twice, the |
| 564 | * first time when the request is parsed and the second time when the response |
| 565 | * is parsed. |
| 566 | */ |
| 567 | static void h1_set_srv_conn_mode(struct h1s *h1s, struct h1m *h1m) |
| 568 | { |
| 569 | struct proxy *be = h1s->h1c->px; |
| 570 | struct proxy *fe = strm_fe(si_strm(h1s->cs->data)); |
| 571 | int flag = H1S_F_WANT_KAL; |
| 572 | |
| 573 | /* Tunnel mode can only by set on the frontend */ |
| 574 | if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN) |
| 575 | flag = H1S_F_WANT_TUN; |
| 576 | |
| 577 | /* For the server connection: server-close == httpclose */ |
| 578 | if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL || |
| 579 | (be->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL || |
| 580 | (fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_CLO || |
| 581 | (be->options & PR_O_HTTP_MODE) == PR_O_HTTP_CLO) |
| 582 | flag = H1S_F_WANT_CLO; |
| 583 | |
| 584 | /* flags order: CLO > SCL > TUN > KAL */ |
| 585 | if ((h1s->flags & H1S_F_WANT_MSK) < flag) |
| 586 | h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | flag; |
| 587 | |
| 588 | if (h1m->flags & H1_MF_RESP) { |
| 589 | /* Either we've established an explicit tunnel, or we're |
| 590 | * switching the protocol. In both cases, we're very unlikely to |
| 591 | * understand the next protocols. We have to switch to tunnel |
| 592 | * mode, so that we transfer the request and responses then let |
| 593 | * this protocol pass unmodified. When we later implement |
| 594 | * specific parsers for such protocols, we'll want to check the |
| 595 | * Upgrade header which contains information about that protocol |
| 596 | * for responses with status 101 (eg: see RFC2817 about TLS). |
| 597 | */ |
| 598 | if ((h1s->meth == HTTP_METH_CONNECT && h1s->status == 200) || |
| 599 | h1s->status == 101) |
| 600 | h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_TUN; |
| 601 | else if (!(h1m->flags & H1_MF_XFER_LEN)) /* no length known => close */ |
| 602 | h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO; |
| 603 | else if (h1s->flags & H1S_F_WANT_KAL && |
| 604 | (!(h1m->flags & (H1_MF_VER_11|H1_MF_CONN_KAL)) || /* no KA in HTTP/1.0 */ |
| 605 | h1m->flags & H1_MF_CONN_CLO)) /* explicit close */ |
| 606 | h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO; |
| 607 | } |
| 608 | |
| 609 | /* If KAL, check if the backend is stopping. If yes, switch in CLO mode */ |
| 610 | if (h1s->flags & H1S_F_WANT_KAL && be->state == PR_STSTOPPED) |
| 611 | h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO; |
| 612 | |
| 613 | /* TODO: For now on the server-side, we disable keep-alive */ |
| 614 | if (h1s->flags & H1S_F_WANT_KAL) |
| 615 | h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO; |
| 616 | } |
| 617 | |
| 618 | static int h1_update_req_conn_hdr(struct h1s *h1s, struct h1m *h1m, |
| 619 | struct http_hdr *hdrs, struct buffer *buf) |
| 620 | { |
| 621 | struct proxy *px = h1s->h1c->px; |
| 622 | int ret = 0; |
| 623 | |
| 624 | /* Don't update "Connection:" header in TUNNEL mode or if "Upgrage" |
| 625 | * token is found |
| 626 | */ |
| 627 | if (h1s->flags & H1S_F_WANT_TUN || h1m->flags & H1_MF_CONN_UPG) |
| 628 | goto end; |
| 629 | |
| 630 | if (h1s->flags & H1S_F_WANT_KAL || px->options2 & PR_O2_FAKE_KA) { |
| 631 | if (h1m->flags & H1_MF_CONN_CLO) |
| 632 | ret += h1_remove_conn_hdrs(h1m, hdrs, buf); |
| 633 | if (!(h1m->flags & (H1_MF_VER_11|H1_MF_CONN_KAL))) |
| 634 | ret += h1_add_conn_hdrs(h1m, hdrs, buf, 0); |
| 635 | } |
| 636 | else { /* H1S_F_WANT_CLO && !PR_O2_FAKE_KA */ |
| 637 | if (h1m->flags & H1_MF_CONN_KAL) |
| 638 | ret += h1_remove_conn_hdrs(h1m, hdrs, buf); |
| 639 | if ((h1m->flags & (H1_MF_VER_11|H1_MF_CONN_CLO)) == H1_MF_VER_11) |
| 640 | ret += h1_add_conn_hdrs(h1m, hdrs, buf, 1); |
| 641 | } |
| 642 | |
| 643 | end: |
| 644 | return ret; |
| 645 | } |
| 646 | |
| 647 | static int h1_update_res_conn_hdr(struct h1s *h1s, struct h1m *h1m, |
| 648 | struct http_hdr *hdrs, struct buffer *buf) |
| 649 | { |
| 650 | int ret = 0; |
| 651 | |
| 652 | /* Don't update "Connection:" header in TUNNEL mode or if "Upgrage" |
| 653 | * token is found |
| 654 | */ |
| 655 | if (h1s->flags & H1S_F_WANT_TUN || h1m->flags & H1_MF_CONN_UPG) |
| 656 | goto end; |
| 657 | |
| 658 | if (h1s->flags & H1S_F_WANT_KAL) { |
| 659 | if (h1m->flags & H1_MF_CONN_CLO) |
| 660 | ret += h1_remove_conn_hdrs(h1m, hdrs, buf); |
| 661 | if (!(h1m->flags & (H1_MF_VER_11|H1_MF_CONN_KAL))) |
| 662 | ret += h1_add_conn_hdrs(h1m, hdrs, buf, 0); |
| 663 | } |
| 664 | else { /* H1S_F_WANT_CLO */ |
| 665 | if (h1m->flags & H1_MF_CONN_KAL) |
| 666 | ret += h1_remove_conn_hdrs(h1m, hdrs, buf); |
| 667 | if ((h1m->flags & (H1_MF_VER_11|H1_MF_CONN_CLO)) == H1_MF_VER_11) |
| 668 | ret += h1_add_conn_hdrs(h1m, hdrs, buf, 1); |
| 669 | } |
| 670 | |
| 671 | end: |
| 672 | return ret; |
| 673 | } |
| 674 | |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 675 | /* |
| 676 | * Parse HTTP/1 headers. It returns the number of bytes parsed if > 0, or 0 if |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 677 | * it couldn't proceed. Parsing errors are reported by setting H1S_F_*_ERROR |
| 678 | * flag and filling h1s->err_pos and h1s->err_state fields. This functions is |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 679 | * responsibile to update the parser state <h1m>. |
| 680 | */ |
| 681 | static size_t h1_process_headers(struct h1s *h1s, struct h1m *h1m, |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 682 | struct buffer *buf, size_t *ofs, size_t max) |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 683 | { |
| 684 | struct http_hdr hdrs[MAX_HTTP_HDR]; |
| 685 | union h1_sl sl; |
| 686 | int ret = 0; |
| 687 | |
| 688 | /* Realing input buffer if necessary */ |
| 689 | if (b_head(buf) + b_data(buf) > b_wrap(buf)) |
| 690 | b_slow_realign(buf, trash.area, 0); |
| 691 | |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 692 | ret = h1_headers_to_hdr_list(b_peek(buf, *ofs), b_peek(buf, *ofs) + max, |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 693 | hdrs, sizeof(hdrs)/sizeof(hdrs[0]), h1m, &sl); |
| 694 | if (ret <= 0) { |
| 695 | /* Incomplete or invalid message. If the buffer is full, it's an |
| 696 | * error because headers are too large to be handled by the |
| 697 | * parser. */ |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 698 | if (ret < 0 || (!ret && b_full(buf))) |
| 699 | goto error; |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 700 | goto end; |
| 701 | } |
| 702 | |
| 703 | /* messages headers fully parsed, do some checks to prepare the body |
| 704 | * parsing. |
| 705 | */ |
| 706 | |
| 707 | /* Be sure to keep some space to do headers rewritting */ |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 708 | if (ret > (b_size(buf) - global.tune.maxrewrite)) |
| 709 | goto error; |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 710 | |
| 711 | /* Save the request's method or the response's status and check if the |
| 712 | * body length is known */ |
| 713 | if (!(h1m->flags & H1_MF_RESP)) { |
| 714 | h1s->meth = sl.rq.meth; |
| 715 | /* Request have always a known length */ |
| 716 | h1m->flags |= H1_MF_XFER_LEN; |
| 717 | if (!(h1m->flags & H1_MF_CHNK) && !h1m->body_len) |
| 718 | h1m->state = H1_MSG_DONE; |
| 719 | } |
| 720 | else { |
| 721 | h1s->status = sl.st.status; |
| 722 | |
| 723 | if ((h1s->meth == HTTP_METH_HEAD) || |
| 724 | (h1s->status >= 100 && h1s->status < 200) || |
| 725 | (h1s->status == 204) || (h1s->status == 304) || |
| 726 | (h1s->meth == HTTP_METH_CONNECT && h1s->status == 200)) { |
| 727 | h1m->flags &= ~(H1_MF_CLEN|H1_MF_CHNK); |
| 728 | h1m->flags |= H1_MF_XFER_LEN; |
| 729 | h1m->curr_len = h1m->body_len = 0; |
| 730 | h1m->state = H1_MSG_DONE; |
| 731 | } |
| 732 | else if (h1m->flags & (H1_MF_CLEN|H1_MF_CHNK)) { |
| 733 | h1m->flags |= H1_MF_XFER_LEN; |
| 734 | if ((h1m->flags & H1_MF_CLEN) && !h1m->body_len) |
| 735 | h1m->state = H1_MSG_DONE; |
| 736 | } |
| 737 | else |
| 738 | h1m->state = H1_MSG_TUNNEL; |
| 739 | } |
| 740 | |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 741 | *ofs += ret; |
| 742 | if (!conn_is_back(h1s->h1c->conn)) { |
| 743 | h1_set_cli_conn_mode(h1s, h1m); |
| 744 | if (h1m->flags & H1_MF_RESP) |
| 745 | *ofs += h1_update_res_conn_hdr(h1s, h1m, hdrs, buf); |
| 746 | } |
| 747 | else { |
| 748 | h1_set_srv_conn_mode(h1s, h1m); |
| 749 | if (!(h1m->flags & H1_MF_RESP)) |
| 750 | *ofs += h1_update_req_conn_hdr(h1s, h1m, hdrs, buf); |
| 751 | } |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 752 | end: |
| 753 | return ret; |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 754 | |
| 755 | error: |
| 756 | h1s->flags |= (!(h1m->flags & H1_MF_RESP) ? H1S_F_REQ_ERROR : H1S_F_RES_ERROR); |
| 757 | h1m->err_state = h1m->state; |
| 758 | h1m->err_pos = h1m->next; |
| 759 | ret = 0; |
| 760 | goto end; |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 761 | } |
| 762 | |
| 763 | /* |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 764 | * Parse HTTP/1 body. It returns the number of bytes parsed if > 0, or 0 if it |
| 765 | * couldn't proceed. Parsing errors are reported by setting H1S_F_*_ERROR flag |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 766 | * and filling h1s->err_pos and h1s->err_state fields. This functions is |
| 767 | * responsibile to update the parser state <h1m>. |
| 768 | */ |
| 769 | static size_t h1_process_data(struct h1s *h1s, struct h1m *h1m, |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 770 | struct buffer *buf, size_t *ofs, size_t max) |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 771 | { |
| 772 | size_t total = 0; |
| 773 | int ret = 0; |
| 774 | |
| 775 | if (h1m->flags & H1_MF_XFER_LEN) { |
| 776 | if (h1m->flags & H1_MF_CLEN) { |
| 777 | /* content-length: read only h2m->body_len */ |
| 778 | ret = max; |
| 779 | if ((uint64_t)ret > h1m->curr_len) |
| 780 | ret = h1m->curr_len; |
| 781 | h1m->curr_len -= ret; |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 782 | *ofs += ret; |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 783 | total += ret; |
| 784 | if (!h1m->curr_len) |
| 785 | h1m->state = H1_MSG_DONE; |
| 786 | } |
| 787 | else if (h1m->flags & H1_MF_CHNK) { |
| 788 | new_chunk: |
| 789 | /* te:chunked : parse chunks */ |
| 790 | if (h1m->state == H1_MSG_CHUNK_CRLF) { |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 791 | ret = h1_skip_chunk_crlf(buf, *ofs, *ofs + max); |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 792 | if (ret <= 0) |
| 793 | goto end; |
| 794 | max -= ret; |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 795 | *ofs += ret; |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 796 | total += ret; |
| 797 | h1m->state = H1_MSG_CHUNK_SIZE; |
| 798 | } |
| 799 | |
| 800 | if (h1m->state == H1_MSG_CHUNK_SIZE) { |
| 801 | unsigned int chksz; |
| 802 | |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 803 | ret = h1_parse_chunk_size(buf, *ofs, *ofs + max, &chksz); |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 804 | if (ret <= 0) |
| 805 | goto end; |
| 806 | h1m->curr_len = chksz; |
| 807 | h1m->body_len += chksz; |
| 808 | max -= ret; |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 809 | *ofs += ret; |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 810 | total += ret; |
| 811 | h1m->state = (!chksz ? H1_MSG_TRAILERS : H1_MSG_DATA); |
| 812 | } |
| 813 | |
| 814 | if (h1m->state == H1_MSG_DATA) { |
| 815 | ret = max; |
| 816 | if (!ret) |
| 817 | goto end; |
| 818 | if ((uint64_t)ret > h1m->curr_len) |
| 819 | ret = h1m->curr_len; |
| 820 | h1m->curr_len -= ret; |
| 821 | max -= ret; |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 822 | *ofs += ret; |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 823 | total += ret; |
| 824 | if (h1m->curr_len) |
| 825 | goto end; |
| 826 | h1m->state = H1_MSG_CHUNK_CRLF; |
| 827 | goto new_chunk; |
| 828 | } |
| 829 | |
| 830 | if (h1m->state == H1_MSG_TRAILERS) { |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 831 | ret = h1_measure_trailers(buf, *ofs, *ofs + max); |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 832 | if (ret <= 0) |
| 833 | goto end; |
| 834 | max -= ret; |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 835 | *ofs += ret; |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 836 | total += ret; |
| 837 | h1m->state = H1_MSG_DONE; |
| 838 | } |
| 839 | } |
| 840 | else { |
| 841 | /* XFER_LEN is set but not CLEN nor CHNK, it means there |
| 842 | * is no body. Switch the message in DONE state |
| 843 | */ |
| 844 | h1m->state = H1_MSG_DONE; |
| 845 | } |
| 846 | } |
| 847 | else { |
| 848 | /* no content length, read till SHUTW */ |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 849 | *ofs += max; |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 850 | total = max; |
| 851 | } |
| 852 | |
| 853 | end: |
| 854 | if (ret < 0) { |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 855 | h1s->flags |= (!(h1m->flags & H1_MF_RESP) ? H1S_F_REQ_ERROR : H1S_F_RES_ERROR); |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 856 | h1m->err_state = h1m->state; |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 857 | h1m->err_pos = *ofs + max + ret; |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 858 | return 0; |
| 859 | } |
| 860 | |
| 861 | return total; |
| 862 | } |
| 863 | |
| 864 | /* |
| 865 | * Synchronize the request and the response before reseting them. Except for 1xx |
| 866 | * responses, we wait that the request and the response are in DONE state and |
| 867 | * that all data are forwarded for both. For 1xx responses, only the response is |
| 868 | * reset, waiting the final one. Many 1xx messages can be sent. |
| 869 | */ |
| 870 | static void h1_sync_messages(struct h1c *h1c) |
| 871 | { |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 872 | struct h1s *h1s = h1c->h1s; |
| 873 | |
| 874 | if (!h1s) |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 875 | return; |
| 876 | |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 877 | if (h1s->res.state == H1_MSG_DONE && |
| 878 | (h1s->status < 200 && (h1s->status == 100 || h1s->status >= 102)) && |
| 879 | ((conn_is_back(h1c->conn) && !b_data(&h1c->obuf)) || !b_data(&h1s->rxbuf))) { |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 880 | /* For 100-Continue response or any other informational 1xx |
| 881 | * response which is non-final, don't reset the request, the |
| 882 | * transaction is not finished. We take care the response was |
| 883 | * transferred before. |
| 884 | */ |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 885 | h1m_init_res(&h1s->res); |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 886 | } |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 887 | else if (!b_data(&h1s->rxbuf) && !b_data(&h1c->obuf) && |
| 888 | h1s->req.state == H1_MSG_DONE && h1s->res.state == H1_MSG_DONE) { |
| 889 | if (h1s->flags & H1S_F_WANT_TUN) { |
| 890 | h1s->req.state = H1_MSG_TUNNEL; |
| 891 | h1s->res.state = H1_MSG_TUNNEL; |
| 892 | } |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 893 | } |
| 894 | } |
| 895 | |
| 896 | /* |
| 897 | * Process incoming data. It parses data and transfer them from h1c->ibuf into |
| 898 | * h1s->rxbuf. It returns the number of bytes parsed and transferred if > 0, or |
| 899 | * 0 if it couldn't proceed. |
| 900 | */ |
| 901 | static size_t h1_process_input(struct h1c *h1c, struct buffer *buf, size_t count) |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 902 | { |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 903 | struct h1s *h1s = NULL; |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 904 | struct h1m *h1m; |
| 905 | size_t total = 0; |
| 906 | size_t ret = 0; |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 907 | size_t max; |
| 908 | int errflag; |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 909 | |
| 910 | if (h1c->flags & H1C_F_CS_ERROR) |
| 911 | goto end; |
| 912 | |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 913 | /* Create a new H1S without CS if not already done */ |
| 914 | if (!h1c->h1s && !h1s_create(h1c, NULL)) |
| 915 | goto err; |
| 916 | h1s = h1c->h1s; |
| 917 | |
| 918 | #if 0 |
| 919 | // FIXME: Use a proxy option to enable early creation of the CS |
| 920 | /* Create the CS if not already attached to the H1S */ |
| 921 | if (!h1s->cs && !h1s_new_cs(h1s)) |
| 922 | goto err; |
| 923 | #endif |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 924 | |
| 925 | if (!h1_get_buf(h1c, &h1s->rxbuf)) { |
| 926 | h1c->flags |= H1C_F_RX_ALLOC; |
| 927 | goto end; |
| 928 | } |
| 929 | |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 930 | if (count > b_room(&h1s->rxbuf)) |
| 931 | count = b_room(&h1s->rxbuf); |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 932 | max = count; |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 933 | |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 934 | if (!conn_is_back(h1c->conn)) { |
| 935 | h1m = &h1s->req; |
| 936 | errflag = H1S_F_REQ_ERROR; |
| 937 | } |
| 938 | else { |
| 939 | h1m = &h1s->res; |
| 940 | errflag = H1S_F_RES_ERROR; |
| 941 | } |
| 942 | while (!(h1s->flags & errflag) && max) { |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 943 | if (h1m->state <= H1_MSG_LAST_LF) { |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 944 | ret = h1_process_headers(h1s, h1m, buf, &total, max); |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 945 | if (!ret) |
| 946 | break; |
| 947 | |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 948 | /* Reset request timeout */ |
| 949 | h1s->h1c->http_exp = TICK_ETERNITY; |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 950 | |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 951 | /* Create the CS if not already attached to the H1S */ |
| 952 | if (!h1s->cs && !h1s_new_cs(h1s)) |
| 953 | goto err; |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 954 | } |
| 955 | else if (h1m->state <= H1_MSG_TRAILERS) { |
| 956 | /* Do not parse the body if the header part is not yet |
| 957 | * transferred to the stream. |
| 958 | */ |
| 959 | if (!(h1s->flags & H1S_F_MSG_XFERED)) |
| 960 | break; |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 961 | ret = h1_process_data(h1s, h1m, buf, &total, max); |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 962 | if (!ret) |
| 963 | break; |
| 964 | } |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 965 | else if (h1m->state == H1_MSG_DONE) |
| 966 | break; |
| 967 | else if (h1m->state == H1_MSG_TUNNEL) { |
| 968 | total += max; |
| 969 | max = 0; |
| 970 | break; |
| 971 | } |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 972 | else { |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 973 | h1s->flags |= errflag; |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 974 | break; |
| 975 | } |
| 976 | |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 977 | max -= ret; |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 978 | } |
| 979 | |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 980 | if (h1s->flags & errflag) { |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 981 | /* For now, if an error occurred during the message parsing when |
| 982 | * a stream is already attached to the mux, we transfer |
| 983 | * everything to let the stream handle the error itself. We |
| 984 | * suppose the stream will detect the same error of |
| 985 | * course. Otherwise, we generate the error here. |
| 986 | */ |
| 987 | if (!h1s->cs) { |
| 988 | if (!h1_get_buf(h1c, &h1c->obuf)) { |
| 989 | h1c->flags |= H1C_F_OUT_ALLOC; |
| 990 | goto err; |
| 991 | } |
| 992 | h1_cpy_error_message(h1c, &h1c->obuf, 400); |
| 993 | goto err; |
| 994 | } |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 995 | total += max; |
| 996 | max = 0; |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 997 | } |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 998 | |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 999 | b_xfer(&h1s->rxbuf, buf, total); |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 1000 | |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1001 | if (b_data(&h1s->rxbuf)) { |
| 1002 | h1s->cs->flags |= CS_FL_RCV_MORE; |
| 1003 | if (b_full(&h1s->rxbuf)) |
| 1004 | h1c->flags |= H1C_F_RX_FULL; |
| 1005 | } |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 1006 | ret = count - max; |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1007 | end: |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 1008 | return ret; |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1009 | |
| 1010 | err: |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 1011 | h1s_destroy(h1s); |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1012 | h1c->flags |= H1C_F_CS_ERROR; |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 1013 | sess_log(h1c->conn->owner); |
| 1014 | ret = 0; |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1015 | goto end; |
| 1016 | } |
| 1017 | |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 1018 | /* |
| 1019 | * Process outgoing data. It parses data and transfer them from the channel buffer into |
| 1020 | * h1c->obuf. It returns the number of bytes parsed and transferred if > 0, or |
| 1021 | * 0 if it couldn't proceed. |
| 1022 | */ |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1023 | static size_t h1_process_output(struct h1c *h1c, struct buffer *buf, size_t count) |
| 1024 | { |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 1025 | struct h1s *h1s = h1c->h1s; |
| 1026 | struct h1m *h1m; |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 1027 | size_t max; |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 1028 | size_t total = 0; |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1029 | size_t ret = 0; |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 1030 | int errflag; |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1031 | |
| 1032 | if (!h1_get_buf(h1c, &h1c->obuf)) { |
| 1033 | h1c->flags |= H1C_F_OUT_ALLOC; |
| 1034 | goto end; |
| 1035 | } |
| 1036 | if (count > b_room(&h1c->obuf)) |
| 1037 | count = b_room(&h1c->obuf); |
| 1038 | |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 1039 | max = count; |
| 1040 | if (!conn_is_back(h1c->conn)) { |
| 1041 | h1m = &h1s->res; |
| 1042 | errflag = H1S_F_RES_ERROR; |
| 1043 | } |
| 1044 | else { |
| 1045 | h1m = &h1s->req; |
| 1046 | errflag = H1S_F_REQ_ERROR; |
| 1047 | } |
| 1048 | while (!(h1s->flags & errflag) && max) { |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 1049 | if (h1m->state <= H1_MSG_LAST_LF) { |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 1050 | ret = h1_process_headers(h1s, h1m, buf, &total, max); |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 1051 | if (!ret) { |
| 1052 | /* incomplete or invalid response, this is abnormal coming from |
| 1053 | * haproxy and may only result in a bad errorfile or bad Lua code |
| 1054 | * so that won't be fixed, raise an error now. |
| 1055 | */ |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 1056 | h1s->flags |= errflag; |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 1057 | break; |
| 1058 | } |
| 1059 | } |
| 1060 | else if (h1m->state <= H1_MSG_TRAILERS) { |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 1061 | ret = h1_process_data(h1s, h1m, buf, &total, max); |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 1062 | if (!ret) |
| 1063 | break; |
| 1064 | } |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 1065 | else if (h1m->state == H1_MSG_DONE) |
| 1066 | break; |
| 1067 | else if (h1m->state == H1_MSG_TUNNEL) { |
| 1068 | total += max; |
| 1069 | max = 0; |
| 1070 | break; |
| 1071 | } |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 1072 | else { |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 1073 | h1s->flags |= errflag; |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 1074 | break; |
| 1075 | } |
| 1076 | |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 1077 | max -= ret; |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 1078 | } |
| 1079 | |
| 1080 | // TODO: Handle H1S errors |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 1081 | b_xfer(&h1c->obuf, buf, total); |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1082 | |
| 1083 | if (b_full(&h1c->obuf)) |
| 1084 | h1c->flags |= H1C_F_OUT_FULL; |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 1085 | ret = count - max; |
| 1086 | end: |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1087 | return ret; |
| 1088 | } |
| 1089 | |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 1090 | /* |
| 1091 | * Transfer data from h1s->rxbuf into the channel buffer. It returns the number |
| 1092 | * of bytes transferred. |
| 1093 | */ |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1094 | static size_t h1_xfer(struct h1s *h1s, struct buffer *buf, size_t count) |
| 1095 | { |
| 1096 | struct h1c *h1c = h1s->h1c; |
| 1097 | struct conn_stream *cs = h1s->cs; |
| 1098 | size_t ret = 0; |
| 1099 | |
| 1100 | /* transfer possibly pending data to the upper layer */ |
| 1101 | ret = b_xfer(buf, &h1s->rxbuf, count); |
| 1102 | |
| 1103 | if (b_data(&h1s->rxbuf)) { |
| 1104 | if (!b_full(&h1s->rxbuf)) { |
| 1105 | h1c->flags &= ~H1C_F_RX_FULL; |
| 1106 | } |
| 1107 | cs->flags |= CS_FL_RCV_MORE; |
| 1108 | } |
| 1109 | else { |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 1110 | if (!(h1s->flags & H1S_F_MSG_XFERED)) |
| 1111 | h1s->flags |= H1S_F_MSG_XFERED; |
| 1112 | |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1113 | h1c->flags &= ~H1C_F_RX_FULL; |
| 1114 | h1_release_buf(h1c, &h1s->rxbuf); |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 1115 | h1_sync_messages(h1c); |
| 1116 | |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1117 | cs->flags &= ~CS_FL_RCV_MORE; |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 1118 | if (!b_data(&h1c->ibuf) && (cs->flags & CS_FL_REOS)) |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1119 | cs->flags |= CS_FL_EOS; |
| 1120 | } |
| 1121 | return ret; |
| 1122 | } |
| 1123 | |
| 1124 | /*********************************************************/ |
| 1125 | /* functions below are I/O callbacks from the connection */ |
| 1126 | /*********************************************************/ |
| 1127 | /* |
| 1128 | * Attempt to read data, and subscribe if none available |
| 1129 | */ |
| 1130 | static int h1_recv(struct h1c *h1c) |
| 1131 | { |
| 1132 | struct connection *conn = h1c->conn; |
| 1133 | size_t ret, max; |
| 1134 | int rcvd = 0; |
| 1135 | |
| 1136 | if (h1c->wait_event.wait_reason & SUB_CAN_RECV) |
| 1137 | return 0; |
| 1138 | |
| 1139 | if (!h1_recv_allowed(h1c)) { |
| 1140 | if (h1c->h1s && b_data(&h1c->h1s->rxbuf)) |
| 1141 | return 1; |
| 1142 | return 0; |
| 1143 | } |
| 1144 | |
Christopher Faulet | 1be55f9 | 2018-10-02 15:59:23 +0200 | [diff] [blame] | 1145 | if (h1c->h1s && (h1c->h1s->flags & H1S_F_BUF_FLUSH)) |
| 1146 | return 1; |
| 1147 | |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1148 | if (!h1_get_buf(h1c, &h1c->ibuf)) { |
| 1149 | h1c->flags |= H1C_F_IN_ALLOC; |
| 1150 | return 0; |
| 1151 | } |
| 1152 | |
| 1153 | ret = 0; |
| 1154 | max = b_room(&h1c->ibuf); |
| 1155 | if (max) { |
| 1156 | h1c->flags &= ~H1C_F_IN_FULL; |
| 1157 | ret = conn->xprt->rcv_buf(conn, &h1c->ibuf, max, 0); |
| 1158 | } |
| 1159 | if (ret > 0) |
| 1160 | rcvd = 1; |
| 1161 | |
| 1162 | if (h1_recv_allowed(h1c)) |
| 1163 | conn->xprt->subscribe(conn, SUB_CAN_RECV, &h1c->wait_event); |
| 1164 | |
| 1165 | if (!b_data(&h1c->ibuf)) |
| 1166 | h1_release_buf(h1c, &h1c->ibuf); |
| 1167 | else if (b_full(&h1c->ibuf)) |
| 1168 | h1c->flags |= H1C_F_IN_FULL; |
| 1169 | return rcvd; |
| 1170 | } |
| 1171 | |
| 1172 | |
| 1173 | /* |
| 1174 | * Try to send data if possible |
| 1175 | */ |
| 1176 | static int h1_send(struct h1c *h1c) |
| 1177 | { |
| 1178 | struct connection *conn = h1c->conn; |
| 1179 | unsigned int flags = 0; |
| 1180 | size_t ret; |
| 1181 | int sent = 0; |
| 1182 | |
| 1183 | if (conn->flags & CO_FL_ERROR) |
| 1184 | return 0; |
| 1185 | |
| 1186 | if (!b_data(&h1c->obuf)) |
| 1187 | goto end; |
| 1188 | |
| 1189 | if (h1c->flags & H1C_F_OUT_FULL) |
| 1190 | flags |= CO_SFL_MSG_MORE; |
| 1191 | |
| 1192 | ret = conn->xprt->snd_buf(conn, &h1c->obuf, b_data(&h1c->obuf), flags); |
| 1193 | if (ret > 0) { |
| 1194 | h1c->flags &= ~H1C_F_OUT_FULL; |
| 1195 | b_del(&h1c->obuf, ret); |
| 1196 | sent = 1; |
| 1197 | } |
| 1198 | |
| 1199 | end: |
| 1200 | /* We're done, no more to send */ |
| 1201 | if (!b_data(&h1c->obuf)) { |
| 1202 | h1_release_buf(h1c, &h1c->obuf); |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 1203 | h1_sync_messages(h1c); |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1204 | if (h1c->flags & H1C_F_CS_SHUTW_NOW) |
| 1205 | h1_shutw_conn(conn); |
| 1206 | } |
| 1207 | else if (!(h1c->wait_event.wait_reason & SUB_CAN_SEND)) |
| 1208 | conn->xprt->subscribe(conn, SUB_CAN_SEND, &h1c->wait_event); |
| 1209 | |
| 1210 | return sent; |
| 1211 | } |
| 1212 | |
| 1213 | |
| 1214 | static void h1_wake_stream(struct h1c *h1c) |
| 1215 | { |
| 1216 | struct connection *conn = h1c->conn; |
| 1217 | struct h1s *h1s = h1c->h1s; |
| 1218 | uint32_t flags = 0; |
| 1219 | int dont_wake = 0; |
| 1220 | |
| 1221 | if (!h1s || !h1s->cs) |
| 1222 | return; |
| 1223 | |
| 1224 | if ((h1c->flags & H1C_F_CS_ERROR) || (conn->flags & CO_FL_ERROR)) |
| 1225 | flags |= CS_FL_ERROR; |
| 1226 | if (conn_xprt_read0_pending(conn)) |
| 1227 | flags |= CS_FL_REOS; |
| 1228 | |
| 1229 | h1s->cs->flags |= flags; |
| 1230 | if (h1s->recv_wait) { |
| 1231 | h1s->recv_wait->wait_reason &= ~SUB_CAN_RECV; |
| 1232 | tasklet_wakeup(h1s->recv_wait->task); |
| 1233 | h1s->recv_wait = NULL; |
| 1234 | dont_wake = 1; |
| 1235 | } |
| 1236 | if (h1s->send_wait) { |
| 1237 | h1s->send_wait->wait_reason &= ~SUB_CAN_SEND; |
| 1238 | tasklet_wakeup(h1s->send_wait->task); |
| 1239 | h1s->send_wait = NULL; |
| 1240 | dont_wake = 1; |
| 1241 | } |
| 1242 | if (!dont_wake && h1s->cs->data_cb->wake) |
| 1243 | h1s->cs->data_cb->wake(h1s->cs); |
| 1244 | } |
| 1245 | |
| 1246 | /* callback called on any event by the connection handler. |
| 1247 | * It applies changes and returns zero, or < 0 if it wants immediate |
| 1248 | * destruction of the connection. |
| 1249 | */ |
| 1250 | static int h1_process(struct h1c * h1c) |
| 1251 | { |
| 1252 | struct connection *conn = h1c->conn; |
| 1253 | |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 1254 | if (b_data(&h1c->ibuf) && !(h1c->flags & (H1C_F_RX_FULL|H1C_F_RX_ALLOC))) { |
| 1255 | size_t ret; |
| 1256 | |
| 1257 | ret = h1_process_input(h1c, &h1c->ibuf, b_data(&h1c->ibuf)); |
| 1258 | if (ret > 0) { |
| 1259 | h1c->flags &= ~H1C_F_IN_FULL; |
| 1260 | if (!b_data(&h1c->ibuf)) |
| 1261 | h1_release_buf(h1c, &h1c->ibuf); |
| 1262 | } |
| 1263 | } |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1264 | |
| 1265 | h1_send(h1c); |
| 1266 | |
| 1267 | h1_wake_stream(h1c); |
| 1268 | |
| 1269 | if (!conn->mux_ctx) |
| 1270 | return -1; |
| 1271 | |
| 1272 | if ((h1c->flags & H1C_F_CS_ERROR) || (conn->flags & CO_FL_ERROR) || conn_xprt_read0_pending(conn)) { |
| 1273 | if (!h1c->h1s || !h1c->h1s->cs) { |
| 1274 | h1_release(conn); |
| 1275 | return -1; |
| 1276 | } |
| 1277 | } |
| 1278 | |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 1279 | /* If there is a stream attached to the mux, let it |
| 1280 | * handle the timeout. |
| 1281 | */ |
| 1282 | if (h1c->h1s && h1c->h1s->cs) |
| 1283 | h1c->idle_exp = TICK_ETERNITY; |
| 1284 | else { |
| 1285 | int tout = (!conn_is_back(conn) |
| 1286 | ? h1c->px->timeout.client |
| 1287 | : h1c->px->timeout.server); |
| 1288 | h1c->idle_exp = tick_add_ifset(now_ms, tout); |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1289 | } |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 1290 | h1c->task->expire = tick_first(h1c->http_exp, h1c->idle_exp); |
| 1291 | if (tick_isset(h1c->task->expire)) |
| 1292 | task_queue(h1c->task); |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1293 | return 0; |
| 1294 | } |
| 1295 | |
| 1296 | static struct task *h1_io_cb(struct task *t, void *ctx, unsigned short status) |
| 1297 | { |
| 1298 | struct h1c *h1c = ctx; |
| 1299 | int ret = 0; |
| 1300 | |
| 1301 | if (!(h1c->wait_event.wait_reason & SUB_CAN_SEND)) |
| 1302 | ret = h1_send(h1c); |
| 1303 | if (!(h1c->wait_event.wait_reason & SUB_CAN_RECV)) |
| 1304 | ret |= h1_recv(h1c); |
| 1305 | if (ret || b_data(&h1c->ibuf)) |
| 1306 | h1_process(h1c); |
| 1307 | return NULL; |
| 1308 | } |
| 1309 | |
| 1310 | |
| 1311 | static int h1_wake(struct connection *conn) |
| 1312 | { |
| 1313 | struct h1c *h1c = conn->mux_ctx; |
| 1314 | |
| 1315 | return (h1_process(h1c)); |
| 1316 | } |
| 1317 | |
| 1318 | |
| 1319 | /* Connection timeout management. The principle is that if there's no receipt |
| 1320 | * nor sending for a certain amount of time, the connection is closed. |
| 1321 | */ |
| 1322 | static struct task *h1_timeout_task(struct task *t, void *context, unsigned short state) |
| 1323 | { |
| 1324 | struct h1c *h1c = context; |
| 1325 | int expired = tick_is_expired(t->expire, now_ms); |
| 1326 | |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 1327 | if (!h1c) |
| 1328 | goto end; |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1329 | |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 1330 | if (!expired) { |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 1331 | t->expire = tick_first(t->expire, tick_first(h1c->idle_exp, h1c->http_exp)); |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 1332 | return t; |
| 1333 | } |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1334 | |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 1335 | h1c->flags |= H1C_F_CS_ERROR; |
| 1336 | h1c->idle_exp = TICK_ETERNITY; |
| 1337 | h1c->http_exp = TICK_ETERNITY; |
| 1338 | t->expire = TICK_ETERNITY; |
| 1339 | |
| 1340 | /* Don't try send error message on the server-side */ |
| 1341 | if (conn_is_back(h1c->conn)) |
| 1342 | goto release; |
| 1343 | |
| 1344 | /* Don't send error message if no input data is pending _AND_ if null |
| 1345 | * requests is ignored or it's not the first request. |
| 1346 | */ |
| 1347 | if (!b_data(&h1c->ibuf) && (h1c->px->options & PR_O_IGNORE_PRB || |
| 1348 | h1c->flags & H1C_F_WAIT_NEXT_REQ)) |
| 1349 | goto release; |
| 1350 | |
| 1351 | /* Try to allocate output buffer to store the error message. If |
| 1352 | * allocation fails, just go away. |
| 1353 | */ |
| 1354 | if (!h1_get_buf(h1c, &h1c->obuf)) |
| 1355 | goto release; |
| 1356 | |
| 1357 | h1_cpy_error_message(h1c, &h1c->obuf, 408); |
| 1358 | tasklet_wakeup(h1c->wait_event.task); |
| 1359 | sess_log(h1c->conn->owner); |
| 1360 | return t; |
| 1361 | |
| 1362 | release: |
| 1363 | if (h1c->h1s) { |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 1364 | tasklet_wakeup(h1c->wait_event.task); |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 1365 | return t; |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1366 | } |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1367 | h1c->task = NULL; |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 1368 | h1_release(h1c->conn); |
Christopher Faulet | 129817b | 2018-09-20 16:14:40 +0200 | [diff] [blame] | 1369 | end: |
| 1370 | task_delete(t); |
| 1371 | task_free(t); |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1372 | return NULL; |
| 1373 | } |
| 1374 | |
| 1375 | /*******************************************/ |
| 1376 | /* functions below are used by the streams */ |
| 1377 | /*******************************************/ |
| 1378 | /* |
| 1379 | * Attach a new stream to a connection |
| 1380 | * (Used for outgoing connections) |
| 1381 | */ |
| 1382 | static struct conn_stream *h1_attach(struct connection *conn) |
| 1383 | { |
| 1384 | struct h1c *h1c = conn->mux_ctx; |
| 1385 | struct conn_stream *cs = NULL; |
| 1386 | struct h1s *h1s; |
| 1387 | |
| 1388 | if (h1c->flags & H1C_F_CS_ERROR) |
| 1389 | goto end; |
| 1390 | |
| 1391 | cs = cs_new(h1c->conn); |
| 1392 | if (!cs) |
| 1393 | goto end; |
| 1394 | |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 1395 | h1s = h1s_create(h1c, cs); |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1396 | if (h1s == NULL) |
| 1397 | goto end; |
| 1398 | |
| 1399 | return cs; |
| 1400 | end: |
| 1401 | cs_free(cs); |
| 1402 | return NULL; |
| 1403 | } |
| 1404 | |
| 1405 | /* Retrieves a valid conn_stream from this connection, or returns NULL. For |
| 1406 | * this mux, it's easy as we can only store a single conn_stream. |
| 1407 | */ |
| 1408 | static const struct conn_stream *h1_get_first_cs(const struct connection *conn) |
| 1409 | { |
| 1410 | struct h1c *h1c = conn->mux_ctx; |
| 1411 | struct h1s *h1s = h1c->h1s; |
| 1412 | |
| 1413 | if (h1s) |
| 1414 | return h1s->cs; |
| 1415 | |
| 1416 | return NULL; |
| 1417 | } |
| 1418 | |
| 1419 | static void h1_destroy(struct connection *conn) |
| 1420 | { |
| 1421 | struct h1c *h1c = conn->mux_ctx; |
| 1422 | |
| 1423 | if (!h1c->h1s) |
| 1424 | h1_release(conn); |
| 1425 | } |
| 1426 | |
| 1427 | /* |
| 1428 | * Detach the stream from the connection and possibly release the connection. |
| 1429 | */ |
| 1430 | static void h1_detach(struct conn_stream *cs) |
| 1431 | { |
| 1432 | struct h1s *h1s = cs->ctx; |
| 1433 | struct h1c *h1c; |
| 1434 | |
| 1435 | cs->ctx = NULL; |
| 1436 | if (!h1s) |
| 1437 | return; |
| 1438 | |
| 1439 | h1c = h1s->h1c; |
| 1440 | h1s->cs = NULL; |
| 1441 | |
| 1442 | h1s_destroy(h1s); |
| 1443 | |
| 1444 | /* We don't want to close right now unless the connection is in error */ |
| 1445 | if ((h1c->flags & (H1C_F_CS_ERROR|H1C_F_CS_SHUTW)) || |
| 1446 | (h1c->conn->flags & CO_FL_ERROR)) |
| 1447 | h1_release(h1c->conn); |
| 1448 | else |
| 1449 | tasklet_wakeup(h1c->wait_event.task); |
| 1450 | } |
| 1451 | |
| 1452 | |
| 1453 | static void h1_shutr(struct conn_stream *cs, enum cs_shr_mode mode) |
| 1454 | { |
| 1455 | struct h1s *h1s = cs->ctx; |
| 1456 | |
| 1457 | if (!h1s) |
| 1458 | return; |
| 1459 | |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 1460 | if ((h1s->flags & H1S_F_WANT_KAL) && !(cs->flags & (CS_FL_REOS|CS_FL_EOS))) |
| 1461 | return; |
| 1462 | |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1463 | /* NOTE: Be sure to handle abort (cf. h2_shutr) */ |
| 1464 | if (cs->flags & CS_FL_SHR) |
| 1465 | return; |
| 1466 | if (conn_xprt_ready(cs->conn) && cs->conn->xprt->shutr) |
| 1467 | cs->conn->xprt->shutr(cs->conn, (mode == CS_SHR_DRAIN)); |
| 1468 | if (cs->flags & CS_FL_SHW) { |
| 1469 | h1s->h1c->flags = (h1s->h1c->flags & ~H1C_F_CS_SHUTW_NOW) | H1C_F_CS_SHUTW; |
| 1470 | conn_full_close(cs->conn); |
| 1471 | } |
| 1472 | } |
| 1473 | |
| 1474 | static void h1_shutw(struct conn_stream *cs, enum cs_shw_mode mode) |
| 1475 | { |
| 1476 | struct h1s *h1s = cs->ctx; |
| 1477 | struct h1c *h1c; |
| 1478 | |
| 1479 | if (!h1s) |
| 1480 | return; |
| 1481 | h1c = h1s->h1c; |
| 1482 | |
Christopher Faulet | f2824e6 | 2018-10-01 12:12:37 +0200 | [diff] [blame] | 1483 | if ((h1s->flags & H1S_F_WANT_KAL) && |
| 1484 | !(cs->flags & (CS_FL_REOS|CS_FL_EOS)) && |
| 1485 | h1s->req.state == H1_MSG_DONE && h1s->res.state == H1_MSG_DONE) |
| 1486 | return; |
| 1487 | |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1488 | h1c->flags |= H1C_F_CS_SHUTW_NOW; |
| 1489 | if ((cs->flags & CS_FL_SHW) || b_data(&h1c->obuf)) |
| 1490 | return; |
| 1491 | |
| 1492 | h1_shutw_conn(cs->conn); |
| 1493 | } |
| 1494 | |
| 1495 | static void h1_shutw_conn(struct connection *conn) |
| 1496 | { |
| 1497 | struct h1c *h1c = conn->mux_ctx; |
| 1498 | |
| 1499 | if (conn_xprt_ready(conn) && conn->xprt->shutw) |
| 1500 | conn->xprt->shutw(conn, 1); |
| 1501 | if (!(conn->flags & CO_FL_SOCK_RD_SH)) |
| 1502 | conn_sock_shutw(conn, 1); |
| 1503 | else { |
| 1504 | h1c->flags = (h1c->flags & ~H1C_F_CS_SHUTW_NOW) | H1C_F_CS_SHUTW; |
| 1505 | conn_full_close(conn); |
| 1506 | } |
| 1507 | } |
| 1508 | |
| 1509 | /* Called from the upper layer, to unsubscribe to events */ |
| 1510 | static int h1_unsubscribe(struct conn_stream *cs, int event_type, void *param) |
| 1511 | { |
| 1512 | struct wait_event *sw; |
| 1513 | struct h1s *h1s = cs->ctx; |
| 1514 | |
| 1515 | if (!h1s) |
| 1516 | return 0; |
| 1517 | |
| 1518 | if (event_type & SUB_CAN_RECV) { |
| 1519 | sw = param; |
| 1520 | if (h1s->recv_wait == sw) { |
| 1521 | sw->wait_reason &= ~SUB_CAN_RECV; |
| 1522 | h1s->recv_wait = NULL; |
| 1523 | } |
| 1524 | } |
| 1525 | if (event_type & SUB_CAN_SEND) { |
| 1526 | sw = param; |
| 1527 | if (h1s->send_wait == sw) { |
| 1528 | sw->wait_reason &= ~SUB_CAN_SEND; |
| 1529 | h1s->send_wait = NULL; |
| 1530 | } |
| 1531 | } |
| 1532 | return 0; |
| 1533 | } |
| 1534 | |
| 1535 | /* Called from the upper layer, to subscribe to events, such as being able to send */ |
| 1536 | static int h1_subscribe(struct conn_stream *cs, int event_type, void *param) |
| 1537 | { |
| 1538 | struct wait_event *sw; |
| 1539 | struct h1s *h1s = cs->ctx; |
| 1540 | |
| 1541 | if (!h1s) |
| 1542 | return -1; |
| 1543 | |
| 1544 | switch (event_type) { |
| 1545 | case SUB_CAN_RECV: |
| 1546 | sw = param; |
| 1547 | if (!(sw->wait_reason & SUB_CAN_RECV)) { |
| 1548 | sw->wait_reason |= SUB_CAN_RECV; |
| 1549 | sw->handle = h1s; |
| 1550 | h1s->recv_wait = sw; |
| 1551 | } |
| 1552 | return 0; |
| 1553 | case SUB_CAN_SEND: |
| 1554 | sw = param; |
| 1555 | if (!(sw->wait_reason & SUB_CAN_SEND)) { |
| 1556 | sw->wait_reason |= SUB_CAN_SEND; |
| 1557 | sw->handle = h1s; |
| 1558 | h1s->send_wait = sw; |
| 1559 | } |
| 1560 | return 0; |
| 1561 | default: |
| 1562 | break; |
| 1563 | } |
| 1564 | return -1; |
| 1565 | } |
| 1566 | |
| 1567 | /* Called from the upper layer, to receive data */ |
| 1568 | static size_t h1_rcv_buf(struct conn_stream *cs, struct buffer *buf, size_t count, int flags) |
| 1569 | { |
| 1570 | struct h1s *h1s = cs->ctx; |
| 1571 | size_t ret = 0; |
| 1572 | |
| 1573 | if (!h1s) |
| 1574 | return ret; |
| 1575 | |
| 1576 | if (!(h1s->h1c->flags & H1C_F_RX_ALLOC)) |
| 1577 | ret = h1_xfer(h1s, buf, count); |
Christopher Faulet | 1be55f9 | 2018-10-02 15:59:23 +0200 | [diff] [blame] | 1578 | |
| 1579 | if (flags & CO_RFL_BUF_FLUSH) |
| 1580 | h1s->flags |= H1S_F_BUF_FLUSH; |
| 1581 | else if (ret > 0 || (h1s->flags & H1S_F_BUF_FLUSH)) { |
| 1582 | h1s->flags &= ~H1S_F_BUF_FLUSH; |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1583 | if (!(h1s->h1c->wait_event.wait_reason & SUB_CAN_RECV)) |
| 1584 | tasklet_wakeup(h1s->h1c->wait_event.task); |
| 1585 | } |
| 1586 | return ret; |
| 1587 | } |
| 1588 | |
| 1589 | |
| 1590 | /* Called from the upper layer, to send data */ |
| 1591 | static size_t h1_snd_buf(struct conn_stream *cs, struct buffer *buf, size_t count, int flags) |
| 1592 | { |
| 1593 | struct h1s *h1s = cs->ctx; |
| 1594 | struct h1c *h1c; |
| 1595 | size_t ret = 0; |
| 1596 | |
| 1597 | if (!h1s) |
| 1598 | return ret; |
| 1599 | |
| 1600 | h1c = h1s->h1c; |
| 1601 | |
| 1602 | /* FIXME: There is a problem when the backend server is down. Channel |
| 1603 | * data are consumed, so CF_WROTE_DATA is set by the stream |
| 1604 | * interface. We should wait the connection is established before, but |
| 1605 | * to do so, we need to have a notification of the connection |
| 1606 | * establishment. |
| 1607 | */ |
| 1608 | |
| 1609 | if (!(h1c->flags & (H1C_F_OUT_FULL|H1C_F_OUT_ALLOC)) && b_data(buf)) |
| 1610 | ret = h1_process_output(h1c, buf, count); |
| 1611 | if (ret > 0) { |
| 1612 | h1_send(h1c); |
| 1613 | |
| 1614 | /* We need to do that because of the infinite forwarding. */ |
| 1615 | if (!b_data(buf)) |
| 1616 | ret = count; |
| 1617 | } |
| 1618 | return ret; |
| 1619 | |
| 1620 | } |
| 1621 | |
Christopher Faulet | 1be55f9 | 2018-10-02 15:59:23 +0200 | [diff] [blame] | 1622 | #if defined(CONFIG_HAP_LINUX_SPLICE) |
| 1623 | /* Send and get, using splicing */ |
| 1624 | static int h1_rcv_pipe(struct conn_stream *cs, struct pipe *pipe, unsigned int count) |
| 1625 | { |
| 1626 | struct h1s *h1s = cs->ctx; |
| 1627 | struct h1m *h1m = (!conn_is_back(cs->conn) ? &h1s->req : &h1s->res); |
| 1628 | int ret = 0; |
| 1629 | |
| 1630 | if (b_data(&h1s->rxbuf) || b_data(&h1s->h1c->ibuf)) |
| 1631 | goto end; |
| 1632 | if (h1m->state == H1_MSG_DATA && count > h1m->curr_len) |
| 1633 | count = h1m->curr_len; |
| 1634 | ret = cs->conn->xprt->rcv_pipe(cs->conn, pipe, count); |
| 1635 | if (h1m->state == H1_MSG_DATA && ret > 0) |
| 1636 | h1m->curr_len -= ret; |
| 1637 | end: |
| 1638 | return ret; |
| 1639 | |
| 1640 | } |
| 1641 | |
| 1642 | static int h1_snd_pipe(struct conn_stream *cs, struct pipe *pipe) |
| 1643 | { |
| 1644 | struct h1s *h1s = cs->ctx; |
| 1645 | struct h1m *h1m = (!conn_is_back(cs->conn) ? &h1s->res : &h1s->req); |
| 1646 | int ret = 0; |
| 1647 | |
| 1648 | if (b_data(&h1s->h1c->obuf)) |
| 1649 | goto end; |
| 1650 | |
| 1651 | ret = cs->conn->xprt->snd_pipe(cs->conn, pipe); |
| 1652 | if (h1m->state == H1_MSG_DATA && ret > 0) |
| 1653 | h1m->curr_len -= ret; |
| 1654 | end: |
| 1655 | return ret; |
| 1656 | } |
| 1657 | #endif |
| 1658 | |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1659 | /****************************************/ |
| 1660 | /* MUX initialization and instanciation */ |
| 1661 | /****************************************/ |
| 1662 | |
| 1663 | /* The mux operations */ |
| 1664 | const struct mux_ops mux_h1_ops = { |
| 1665 | .init = h1_init, |
| 1666 | .wake = h1_wake, |
| 1667 | .attach = h1_attach, |
| 1668 | .get_first_cs = h1_get_first_cs, |
| 1669 | .detach = h1_detach, |
| 1670 | .destroy = h1_destroy, |
| 1671 | .avail_streams = h1_avail_streams, |
| 1672 | .rcv_buf = h1_rcv_buf, |
| 1673 | .snd_buf = h1_snd_buf, |
Christopher Faulet | 1be55f9 | 2018-10-02 15:59:23 +0200 | [diff] [blame] | 1674 | #if defined(CONFIG_HAP_LINUX_SPLICE) |
| 1675 | .rcv_pipe = h1_rcv_pipe, |
| 1676 | .snd_pipe = h1_snd_pipe, |
| 1677 | #endif |
Christopher Faulet | 51dbc94 | 2018-09-13 09:05:15 +0200 | [diff] [blame] | 1678 | .subscribe = h1_subscribe, |
| 1679 | .unsubscribe = h1_unsubscribe, |
| 1680 | .shutr = h1_shutr, |
| 1681 | .shutw = h1_shutw, |
| 1682 | .flags = MX_FL_NONE, |
| 1683 | .name = "h1", |
| 1684 | }; |
| 1685 | |
| 1686 | |
| 1687 | /* this mux registers default HTX proto */ |
| 1688 | static struct mux_proto_list mux_proto_htx = |
| 1689 | { .token = IST(""), .mode = PROTO_MODE_HTX, .side = PROTO_SIDE_BOTH, .mux = &mux_h1_ops }; |
| 1690 | |
| 1691 | static void __h1_deinit(void) |
| 1692 | { |
| 1693 | pool_destroy(pool_head_h1c); |
| 1694 | pool_destroy(pool_head_h1s); |
| 1695 | } |
| 1696 | |
| 1697 | __attribute__((constructor)) |
| 1698 | static void __h1_init(void) |
| 1699 | { |
| 1700 | register_mux_proto(&mux_proto_htx); |
| 1701 | hap_register_post_deinit(__h1_deinit); |
| 1702 | pool_head_h1c = create_pool("h1c", sizeof(struct h1c), MEM_F_SHARED); |
| 1703 | pool_head_h1s = create_pool("h1s", sizeof(struct h1s), MEM_F_SHARED); |
| 1704 | } |
| 1705 | /* |
| 1706 | * Local variables: |
| 1707 | * c-indent-level: 8 |
| 1708 | * c-basic-offset: 8 |
| 1709 | * End: |
| 1710 | */ |