blob: 21deb3544836d34388642d575d0d9e6d9b89ff29 [file] [log] [blame]
Christopher Faulet51dbc942018-09-13 09:05:15 +02001/*
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>
Willy Tarreauafba57a2018-12-11 13:44:24 +010014#include <common/h1.h>
Christopher Faulet0ef372a2019-04-08 10:57:20 +020015#include <common/h2.h>
Willy Tarreaub96b77e2018-12-11 10:22:41 +010016#include <common/htx.h>
Willy Tarreau0108d902018-11-25 19:14:37 +010017#include <common/initcall.h>
Christopher Faulet51dbc942018-09-13 09:05:15 +020018
Christopher Faulet1be55f92018-10-02 15:59:23 +020019#include <types/pipe.h>
Christopher Fauletf2824e62018-10-01 12:12:37 +020020#include <types/proxy.h>
21#include <types/session.h>
22
Christopher Faulet51dbc942018-09-13 09:05:15 +020023#include <proto/connection.h>
Christopher Faulet9768c262018-10-22 09:34:31 +020024#include <proto/http_htx.h>
Christopher Faulet129817b2018-09-20 16:14:40 +020025#include <proto/log.h>
Olivier Houchard44d59142018-12-13 18:46:22 +010026#include <proto/session.h>
Christopher Faulet51dbc942018-09-13 09:05:15 +020027#include <proto/stream.h>
28#include <proto/stream_interface.h>
29
30/*
31 * H1 Connection flags (32 bits)
32 */
33#define H1C_F_NONE 0x00000000
34
35/* Flags indicating why writing output data are blocked */
36#define H1C_F_OUT_ALLOC 0x00000001 /* mux is blocked on lack of output buffer */
37#define H1C_F_OUT_FULL 0x00000002 /* mux is blocked on output buffer full */
38/* 0x00000004 - 0x00000008 unused */
39
40/* Flags indicating why reading input data are blocked. */
41#define H1C_F_IN_ALLOC 0x00000010 /* mux is blocked on lack of input buffer */
42#define H1C_F_IN_FULL 0x00000020 /* mux is blocked on input buffer full */
Christopher Fauletcb55f482018-12-10 11:56:47 +010043#define H1C_F_IN_BUSY 0x00000040
Christopher Faulet539e0292018-11-19 10:40:09 +010044/* 0x00000040 - 0x00000800 unused */
Christopher Faulet51dbc942018-09-13 09:05:15 +020045
46#define H1C_F_CS_ERROR 0x00001000 /* connection must be closed ASAP because an error occurred */
47#define H1C_F_CS_SHUTW_NOW 0x00002000 /* connection must be shut down for writes ASAP */
Christopher Faulet666a0c42019-01-08 11:12:04 +010048#define H1C_F_CS_SHUTDOWN 0x00004000 /* connection is shut down for read and writes */
Christopher Faulet3b88b8d2018-10-26 17:36:03 +020049#define H1C_F_CS_WAIT_CONN 0x00008000 /* waiting for the connection establishment */
Christopher Faulet51dbc942018-09-13 09:05:15 +020050
Christopher Fauletf2824e62018-10-01 12:12:37 +020051#define H1C_F_WAIT_NEXT_REQ 0x00010000 /* waiting for the next request to start, use keep-alive timeout */
Christopher Faulet0ef372a2019-04-08 10:57:20 +020052#define H1C_F_UPG_H2C 0x00020000 /* set if an upgrade to h2 should be done */
Christopher Faulet129817b2018-09-20 16:14:40 +020053
Christopher Faulet51dbc942018-09-13 09:05:15 +020054/*
55 * H1 Stream flags (32 bits)
56 */
Christopher Faulet129817b2018-09-20 16:14:40 +020057#define H1S_F_NONE 0x00000000
58#define H1S_F_ERROR 0x00000001 /* An error occurred on the H1 stream */
Christopher Fauletf2824e62018-10-01 12:12:37 +020059#define H1S_F_REQ_ERROR 0x00000002 /* An error occurred during the request parsing/xfer */
60#define H1S_F_RES_ERROR 0x00000004 /* An error occurred during the response parsing/xfer */
Willy Tarreauc493c9c2019-06-03 14:18:22 +020061#define H1S_F_REOS 0x00000008 /* End of input stream seen even if not delivered yet */
Christopher Fauletf2824e62018-10-01 12:12:37 +020062#define H1S_F_WANT_KAL 0x00000010
63#define H1S_F_WANT_TUN 0x00000020
64#define H1S_F_WANT_CLO 0x00000040
65#define H1S_F_WANT_MSK 0x00000070
66#define H1S_F_NOT_FIRST 0x00000080 /* The H1 stream is not the first one */
Christopher Faulet539e0292018-11-19 10:40:09 +010067#define H1S_F_BUF_FLUSH 0x00000100 /* Flush input buffer and don't read more data */
Christopher Fauletd44ad5b2018-11-19 21:52:12 +010068#define H1S_F_SPLICED_DATA 0x00000200 /* Set when the kernel splicing is in used */
Willy Tarreau34d23482019-01-03 17:46:56 +010069#define H1S_F_HAVE_I_TLR 0x00000800 /* Set during input process to know the trailers were processed */
Christopher Faulet2d7c5392019-06-03 10:41:26 +020070/* 0x00001000 .. 0x00002000 unused */
Christopher Fauletada34b62019-05-24 16:36:43 +020071#define H1S_F_HAVE_O_CONN 0x00004000 /* Set during output process to know connection mode was processed */
Christopher Faulet51dbc942018-09-13 09:05:15 +020072
73/* H1 connection descriptor */
Christopher Faulet51dbc942018-09-13 09:05:15 +020074struct h1c {
75 struct connection *conn;
76 struct proxy *px;
77 uint32_t flags; /* Connection flags: H1C_F_* */
78
79 struct buffer ibuf; /* Input buffer to store data before parsing */
80 struct buffer obuf; /* Output buffer to store data after reformatting */
81
82 struct buffer_wait buf_wait; /* Wait list for buffer allocation */
83 struct wait_event wait_event; /* To be used if we're waiting for I/Os */
84
85 struct h1s *h1s; /* H1 stream descriptor */
Christopher Fauletb8093cf2019-01-03 16:27:28 +010086 struct task *task; /* timeout management task */
87 int timeout; /* idle timeout duration in ticks */
88 int shut_timeout; /* idle timeout duration in ticks after stream shutdown */
Christopher Faulet51dbc942018-09-13 09:05:15 +020089};
90
91/* H1 stream descriptor */
92struct h1s {
93 struct h1c *h1c;
94 struct conn_stream *cs;
Christopher Fauletfeb11742018-11-29 15:12:34 +010095 struct cs_info csinfo; /* CS info, only used for client connections */
96 uint32_t flags; /* Connection flags: H1S_F_* */
Christopher Faulet51dbc942018-09-13 09:05:15 +020097
Christopher Faulet51dbc942018-09-13 09:05:15 +020098 struct wait_event *recv_wait; /* Address of the wait_event the conn_stream associated is waiting on */
99 struct wait_event *send_wait; /* Address of the wait_event the conn_stream associated is waiting on */
Christopher Faulet129817b2018-09-20 16:14:40 +0200100
Olivier Houchardf502aca2018-12-14 19:42:40 +0100101 struct session *sess; /* Associated session */
Christopher Faulet129817b2018-09-20 16:14:40 +0200102 struct h1m req;
103 struct h1m res;
104
105 enum http_meth_t meth; /* HTTP resquest method */
106 uint16_t status; /* HTTP response status */
Christopher Faulet51dbc942018-09-13 09:05:15 +0200107};
108
109/* the h1c and h1s pools */
Willy Tarreau8ceae722018-11-26 11:58:30 +0100110DECLARE_STATIC_POOL(pool_head_h1c, "h1c", sizeof(struct h1c));
111DECLARE_STATIC_POOL(pool_head_h1s, "h1s", sizeof(struct h1s));
Christopher Faulet51dbc942018-09-13 09:05:15 +0200112
Christopher Faulet51dbc942018-09-13 09:05:15 +0200113static int h1_recv(struct h1c *h1c);
114static int h1_send(struct h1c *h1c);
115static int h1_process(struct h1c *h1c);
116static struct task *h1_io_cb(struct task *t, void *ctx, unsigned short state);
Christopher Faulet666a0c42019-01-08 11:12:04 +0100117static void h1_shutw_conn(struct connection *conn, enum cs_shw_mode mode);
Christopher Fauletb8093cf2019-01-03 16:27:28 +0100118static struct task *h1_timeout_task(struct task *t, void *context, unsigned short state);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200119
120/*****************************************************/
121/* functions below are for dynamic buffer management */
122/*****************************************************/
123/*
124 * Indicates whether or not the we may call the h1_recv() function to
125 * attempt to receive data into the buffer and/or parse pending data. The
126 * condition is a bit complex due to some API limits for now. The rules are the
127 * following :
128 * - if an error or a shutdown was detected on the connection and the buffer
129 * is empty, we must not attempt to receive
130 * - if the input buffer failed to be allocated, we must not try to receive
131 * and we know there is nothing pending
132 * - if no flag indicates a blocking condition, we may attempt to receive,
133 * regardless of whether the input buffer is full or not, so that only de
134 * receiving part decides whether or not to block. This is needed because
135 * the connection API indeed prevents us from re-enabling receipt that is
136 * already enabled in a polled state, so we must always immediately stop as
137 * soon as the mux can't proceed so as never to hit an end of read with data
138 * pending in the buffers.
139 * - otherwise must may not attempt to receive
140 */
141static inline int h1_recv_allowed(const struct h1c *h1c)
142{
Christopher Faulet666a0c42019-01-08 11:12:04 +0100143 if (b_data(&h1c->ibuf) == 0 && (h1c->flags & (H1C_F_CS_ERROR|H1C_F_CS_SHUTDOWN)))
Christopher Faulet51dbc942018-09-13 09:05:15 +0200144 return 0;
145
Christopher Fauletcf56b992018-12-11 16:12:31 +0100146 if (h1c->conn->flags & CO_FL_ERROR || conn_xprt_read0_pending(h1c->conn))
147 return 0;
148
Christopher Fauletcb55f482018-12-10 11:56:47 +0100149 if (!(h1c->flags & (H1C_F_IN_ALLOC|H1C_F_IN_FULL|H1C_F_IN_BUSY)))
Christopher Faulet51dbc942018-09-13 09:05:15 +0200150 return 1;
151
152 return 0;
153}
154
155/*
156 * Tries to grab a buffer and to re-enables processing on mux <target>. The h1
157 * flags are used to figure what buffer was requested. It returns 1 if the
158 * allocation succeeds, in which case the connection is woken up, or 0 if it's
159 * impossible to wake up and we prefer to be woken up later.
160 */
161static int h1_buf_available(void *target)
162{
163 struct h1c *h1c = target;
164
165 if ((h1c->flags & H1C_F_IN_ALLOC) && b_alloc_margin(&h1c->ibuf, 0)) {
166 h1c->flags &= ~H1C_F_IN_ALLOC;
167 if (h1_recv_allowed(h1c))
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200168 tasklet_wakeup(h1c->wait_event.tasklet);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200169 return 1;
170 }
171
172 if ((h1c->flags & H1C_F_OUT_ALLOC) && b_alloc_margin(&h1c->obuf, 0)) {
173 h1c->flags &= ~H1C_F_OUT_ALLOC;
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200174 tasklet_wakeup(h1c->wait_event.tasklet);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200175 return 1;
176 }
177
Christopher Faulet51dbc942018-09-13 09:05:15 +0200178 return 0;
179}
180
181/*
182 * Allocate a buffer. If if fails, it adds the mux in buffer wait queue.
183 */
184static inline struct buffer *h1_get_buf(struct h1c *h1c, struct buffer *bptr)
185{
186 struct buffer *buf = NULL;
187
188 if (likely(LIST_ISEMPTY(&h1c->buf_wait.list)) &&
189 unlikely((buf = b_alloc_margin(bptr, 0)) == NULL)) {
190 h1c->buf_wait.target = h1c;
191 h1c->buf_wait.wakeup_cb = h1_buf_available;
192 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
193 LIST_ADDQ(&buffer_wq, &h1c->buf_wait.list);
194 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
195 __conn_xprt_stop_recv(h1c->conn);
196 }
197 return buf;
198}
199
200/*
201 * Release a buffer, if any, and try to wake up entities waiting in the buffer
202 * wait queue.
203 */
204static inline void h1_release_buf(struct h1c *h1c, struct buffer *bptr)
205{
206 if (bptr->size) {
207 b_free(bptr);
208 offer_buffers(h1c->buf_wait.target, tasks_run_queue);
209 }
210}
211
Willy Tarreau00f18a32019-01-26 12:19:01 +0100212/* returns the number of streams in use on a connection to figure if it's
213 * idle or not. We can't have an h1s without a CS so checking h1s is fine,
214 * as the caller will want to know if it was the last one after a detach().
215 */
216static int h1_used_streams(struct connection *conn)
Christopher Faulet51dbc942018-09-13 09:05:15 +0200217{
Willy Tarreau3d2ee552018-12-19 14:12:10 +0100218 struct h1c *h1c = conn->ctx;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200219
Willy Tarreau00f18a32019-01-26 12:19:01 +0100220 return h1c->h1s ? 1 : 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200221}
222
Willy Tarreau00f18a32019-01-26 12:19:01 +0100223/* returns the number of streams still available on a connection */
224static int h1_avail_streams(struct connection *conn)
Olivier Houchard8defe4b2018-12-02 01:31:17 +0100225{
Willy Tarreau00f18a32019-01-26 12:19:01 +0100226 return 1 - h1_used_streams(conn);
Olivier Houchard8defe4b2018-12-02 01:31:17 +0100227}
Christopher Faulet51dbc942018-09-13 09:05:15 +0200228
Willy Tarreau00f18a32019-01-26 12:19:01 +0100229
Christopher Faulet51dbc942018-09-13 09:05:15 +0200230/*****************************************************************/
231/* functions below are dedicated to the mux setup and management */
232/*****************************************************************/
Willy Tarreaufbdf90a2019-06-03 13:42:54 +0200233
234/* returns non-zero if there are input data pending for stream h1s. */
235static inline size_t h1s_data_pending(const struct h1s *h1s)
236{
237 const struct h1m *h1m;
238
239 h1m = conn_is_back(h1s->h1c->conn) ? &h1s->res : &h1s->req;
240 if (h1m->state == H1_MSG_DONE)
241 return 0; // data not for this stream (e.g. pipelining)
242
243 return b_data(&h1s->h1c->ibuf);
244}
245
Christopher Faulet47365272018-10-31 17:40:50 +0100246static struct conn_stream *h1s_new_cs(struct h1s *h1s)
247{
248 struct conn_stream *cs;
249
250 cs = cs_new(h1s->h1c->conn);
251 if (!cs)
252 goto err;
253 h1s->cs = cs;
254 cs->ctx = h1s;
255
256 if (h1s->flags & H1S_F_NOT_FIRST)
257 cs->flags |= CS_FL_NOT_FIRST;
258
259 if (stream_create_from_cs(cs) < 0)
260 goto err;
261 return cs;
262
263 err:
264 cs_free(cs);
265 h1s->cs = NULL;
266 return NULL;
267}
268
Olivier Houchardf502aca2018-12-14 19:42:40 +0100269static struct h1s *h1s_create(struct h1c *h1c, struct conn_stream *cs, struct session *sess)
Christopher Faulet51dbc942018-09-13 09:05:15 +0200270{
271 struct h1s *h1s;
272
273 h1s = pool_alloc(pool_head_h1s);
274 if (!h1s)
Christopher Faulet47365272018-10-31 17:40:50 +0100275 goto fail;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200276
277 h1s->h1c = h1c;
278 h1c->h1s = h1s;
279
Olivier Houchardf502aca2018-12-14 19:42:40 +0100280 h1s->sess = sess;
281
Christopher Faulet51dbc942018-09-13 09:05:15 +0200282 h1s->cs = NULL;
Christopher Fauletb992af02019-03-28 15:42:24 +0100283 h1s->flags = H1S_F_WANT_KAL;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200284
285 h1s->recv_wait = NULL;
286 h1s->send_wait = NULL;
Christopher Faulet129817b2018-09-20 16:14:40 +0200287
288 h1m_init_req(&h1s->req);
Christopher Fauletb992af02019-03-28 15:42:24 +0100289 h1s->req.flags |= (H1_MF_NO_PHDR|H1_MF_CLEAN_CONN_HDR);
Christopher Faulet9768c262018-10-22 09:34:31 +0200290
Christopher Faulet129817b2018-09-20 16:14:40 +0200291 h1m_init_res(&h1s->res);
Christopher Fauletb992af02019-03-28 15:42:24 +0100292 h1s->res.flags |= (H1_MF_NO_PHDR|H1_MF_CLEAN_CONN_HDR);
Christopher Faulet129817b2018-09-20 16:14:40 +0200293
294 h1s->status = 0;
295 h1s->meth = HTTP_METH_OTHER;
296
Christopher Faulet47365272018-10-31 17:40:50 +0100297 if (h1c->flags & H1C_F_WAIT_NEXT_REQ)
298 h1s->flags |= H1S_F_NOT_FIRST;
299 h1c->flags &= ~H1C_F_WAIT_NEXT_REQ;
300
Christopher Faulet129817b2018-09-20 16:14:40 +0200301 if (!conn_is_back(h1c->conn)) {
302 if (h1c->px->options2 & PR_O2_REQBUG_OK)
303 h1s->req.err_pos = -1;
Christopher Faulete9b70722019-04-08 10:46:02 +0200304
305 /* For frontend connections we should always have a session */
306 if (!sess)
307 sess = h1c->conn->owner;
308
309 h1s->csinfo.create_date = sess->accept_date;
310 h1s->csinfo.tv_create = sess->tv_accept;
311 h1s->csinfo.t_handshake = sess->t_handshake;
312 h1s->csinfo.t_idle = -1;
Christopher Faulet129817b2018-09-20 16:14:40 +0200313 }
314 else {
315 if (h1c->px->options2 & PR_O2_RSPBUG_OK)
316 h1s->res.err_pos = -1;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200317
Christopher Fauletfeb11742018-11-29 15:12:34 +0100318 h1s->csinfo.create_date = date;
319 h1s->csinfo.tv_create = now;
320 h1s->csinfo.t_handshake = 0;
321 h1s->csinfo.t_idle = -1;
Christopher Faulete9b70722019-04-08 10:46:02 +0200322 }
Christopher Fauletfeb11742018-11-29 15:12:34 +0100323
Christopher Faulete9b70722019-04-08 10:46:02 +0200324 /* If a conn_stream already exists, attach it to this H1S. Otherwise we
325 * create a new one.
326 */
327 if (cs) {
Christopher Fauletf2824e62018-10-01 12:12:37 +0200328 cs->ctx = h1s;
329 h1s->cs = cs;
330 }
Christopher Faulet47365272018-10-31 17:40:50 +0100331 else {
332 cs = h1s_new_cs(h1s);
333 if (!cs)
334 goto fail;
335 }
Christopher Faulet51dbc942018-09-13 09:05:15 +0200336 return h1s;
Christopher Faulet47365272018-10-31 17:40:50 +0100337
338 fail:
339 pool_free(pool_head_h1s, h1s);
340 return NULL;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200341}
342
343static void h1s_destroy(struct h1s *h1s)
344{
Christopher Fauletf2824e62018-10-01 12:12:37 +0200345 if (h1s) {
346 struct h1c *h1c = h1s->h1c;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200347
Christopher Fauletf2824e62018-10-01 12:12:37 +0200348 h1c->h1s = NULL;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200349
Christopher Fauletf2824e62018-10-01 12:12:37 +0200350 if (h1s->recv_wait != NULL)
Willy Tarreau4f6516d2018-12-19 13:59:17 +0100351 h1s->recv_wait->events &= ~SUB_RETRY_RECV;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200352 if (h1s->send_wait != NULL)
Willy Tarreau4f6516d2018-12-19 13:59:17 +0100353 h1s->send_wait->events &= ~SUB_RETRY_SEND;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200354
Christopher Fauletcb55f482018-12-10 11:56:47 +0100355 h1c->flags &= ~H1C_F_IN_BUSY;
Christopher Faulet47365272018-10-31 17:40:50 +0100356 h1c->flags |= H1C_F_WAIT_NEXT_REQ;
357 if (h1s->flags & (H1S_F_REQ_ERROR|H1S_F_RES_ERROR))
358 h1c->flags |= H1C_F_CS_ERROR;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200359 pool_free(pool_head_h1s, h1s);
360 }
Christopher Faulet51dbc942018-09-13 09:05:15 +0200361}
362
Christopher Fauletfeb11742018-11-29 15:12:34 +0100363static const struct cs_info *h1_get_cs_info(struct conn_stream *cs)
364{
365 struct h1s *h1s = cs->ctx;
366
367 if (h1s && !conn_is_back(cs->conn))
368 return &h1s->csinfo;
369 return NULL;
370}
371
Christopher Faulet51dbc942018-09-13 09:05:15 +0200372/*
Christopher Faulet51f73eb2019-04-08 11:22:47 +0200373 * Initialize the mux once it's attached. It is expected that conn->ctx points
374 * to the existing conn_stream (for outgoing connections or for incoming onces
375 * during a mux upgrade) or NULL (for incoming ones during the connexion
376 * establishment). <input> is always used as Input buffer and may contain
377 * data. It is the caller responsibility to not reuse it anymore. Returns < 0 on
378 * error.
Christopher Faulet51dbc942018-09-13 09:05:15 +0200379 */
Christopher Faulet51f73eb2019-04-08 11:22:47 +0200380static int h1_init(struct connection *conn, struct proxy *proxy, struct session *sess,
381 struct buffer *input)
Christopher Faulet51dbc942018-09-13 09:05:15 +0200382{
Christopher Faulet51dbc942018-09-13 09:05:15 +0200383 struct h1c *h1c;
Christopher Fauletb8093cf2019-01-03 16:27:28 +0100384 struct task *t = NULL;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200385
386 h1c = pool_alloc(pool_head_h1c);
387 if (!h1c)
388 goto fail_h1c;
389 h1c->conn = conn;
390 h1c->px = proxy;
391
392 h1c->flags = H1C_F_NONE;
Christopher Faulet51f73eb2019-04-08 11:22:47 +0200393 h1c->ibuf = *input;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200394 h1c->obuf = BUF_NULL;
395 h1c->h1s = NULL;
Christopher Faulet51f73eb2019-04-08 11:22:47 +0200396 h1c->task = NULL;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200397
Christopher Faulet51dbc942018-09-13 09:05:15 +0200398 LIST_INIT(&h1c->buf_wait.list);
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200399 h1c->wait_event.tasklet = tasklet_new();
400 if (!h1c->wait_event.tasklet)
Christopher Faulet51dbc942018-09-13 09:05:15 +0200401 goto fail;
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200402 h1c->wait_event.tasklet->process = h1_io_cb;
403 h1c->wait_event.tasklet->context = h1c;
Willy Tarreau4f6516d2018-12-19 13:59:17 +0100404 h1c->wait_event.events = 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200405
Christopher Faulete9b70722019-04-08 10:46:02 +0200406 if (conn_is_back(conn)) {
Christopher Fauletb8093cf2019-01-03 16:27:28 +0100407 h1c->shut_timeout = h1c->timeout = proxy->timeout.server;
408 if (tick_isset(proxy->timeout.serverfin))
409 h1c->shut_timeout = proxy->timeout.serverfin;
410 } else {
411 h1c->shut_timeout = h1c->timeout = proxy->timeout.client;
412 if (tick_isset(proxy->timeout.clientfin))
413 h1c->shut_timeout = proxy->timeout.clientfin;
414 }
415 if (tick_isset(h1c->timeout)) {
416 t = task_new(tid_bit);
417 if (!t)
418 goto fail;
419
420 h1c->task = t;
421 t->process = h1_timeout_task;
422 t->context = h1c;
423 t->expire = tick_add(now_ms, h1c->timeout);
424 }
425
Olivier Houchard985234d2019-06-13 17:54:33 +0200426 if (!(conn->flags & CO_FL_CONNECTED) || (conn->flags & CO_FL_HANDSHAKE))
Christopher Faulet3b88b8d2018-10-26 17:36:03 +0200427 h1c->flags |= H1C_F_CS_WAIT_CONN;
428
Christopher Fauletf2824e62018-10-01 12:12:37 +0200429 /* Always Create a new H1S */
Willy Tarreau3d2ee552018-12-19 14:12:10 +0100430 if (!h1s_create(h1c, conn->ctx, sess))
Christopher Fauletf2824e62018-10-01 12:12:37 +0200431 goto fail;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200432
Willy Tarreau3d2ee552018-12-19 14:12:10 +0100433 conn->ctx = h1c;
Christopher Faulet129817b2018-09-20 16:14:40 +0200434
Christopher Fauletb8093cf2019-01-03 16:27:28 +0100435
436 if (t)
437 task_queue(t);
438
Christopher Faulet51dbc942018-09-13 09:05:15 +0200439 /* Try to read, if nothing is available yet we'll just subscribe */
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200440 tasklet_wakeup(h1c->wait_event.tasklet);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200441
442 /* mux->wake will be called soon to complete the operation */
443 return 0;
444
445 fail:
Willy Tarreauf6562792019-05-07 19:05:35 +0200446 task_destroy(t);
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200447 if (h1c->wait_event.tasklet)
448 tasklet_free(h1c->wait_event.tasklet);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200449 pool_free(pool_head_h1c, h1c);
450 fail_h1c:
451 return -1;
452}
453
Christopher Faulet73c12072019-04-08 11:23:22 +0200454/* release function. This one should be called to free all resources allocated
455 * to the mux.
Christopher Faulet51dbc942018-09-13 09:05:15 +0200456 */
Christopher Faulet73c12072019-04-08 11:23:22 +0200457static void h1_release(struct h1c *h1c)
Christopher Faulet51dbc942018-09-13 09:05:15 +0200458{
Christopher Faulet61840e72019-04-15 09:33:32 +0200459 struct connection *conn = NULL;
Christopher Faulet39a96ee2019-04-08 10:52:21 +0200460
Christopher Faulet51dbc942018-09-13 09:05:15 +0200461 if (h1c) {
Christopher Faulet61840e72019-04-15 09:33:32 +0200462 /* The connection must be aattached to this mux to be released */
463 if (h1c->conn && h1c->conn->ctx == h1c)
464 conn = h1c->conn;
465
466 if (conn && h1c->flags & H1C_F_UPG_H2C) {
Christopher Faulet0ef372a2019-04-08 10:57:20 +0200467 h1c->flags &= ~H1C_F_UPG_H2C;
Olivier Houchard45c44372019-06-11 14:06:23 +0200468 if (conn_upgrade_mux_fe(conn, NULL, &h1c->ibuf, ist("h2"), PROTO_MODE_HTX) != -1) {
Christopher Faulet0ef372a2019-04-08 10:57:20 +0200469 /* connection successfully upgraded to H2, this
470 * mux was already released */
471 return;
472 }
473 sess_log(conn->owner); /* Log if the upgrade failed */
474 }
475
Olivier Houchard45c44372019-06-11 14:06:23 +0200476
Christopher Faulet51dbc942018-09-13 09:05:15 +0200477 if (!LIST_ISEMPTY(&h1c->buf_wait.list)) {
478 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
479 LIST_DEL(&h1c->buf_wait.list);
480 LIST_INIT(&h1c->buf_wait.list);
481 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
482 }
483
484 h1_release_buf(h1c, &h1c->ibuf);
485 h1_release_buf(h1c, &h1c->obuf);
486
Christopher Fauletb8093cf2019-01-03 16:27:28 +0100487 if (h1c->task) {
488 h1c->task->context = NULL;
489 task_wakeup(h1c->task, TASK_WOKEN_OTHER);
490 h1c->task = NULL;
491 }
492
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200493 if (h1c->wait_event.tasklet)
494 tasklet_free(h1c->wait_event.tasklet);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200495
Christopher Fauletf2824e62018-10-01 12:12:37 +0200496 h1s_destroy(h1c->h1s);
Olivier Houchard0e079372019-04-15 17:51:16 +0200497 if (conn && h1c->wait_event.events != 0)
Olivier Houcharde179d0e2019-03-21 18:27:17 +0100498 conn->xprt->unsubscribe(conn, conn->xprt_ctx, h1c->wait_event.events,
Olivier Houchard0e079372019-04-15 17:51:16 +0200499 &h1c->wait_event);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200500 pool_free(pool_head_h1c, h1c);
501 }
502
Christopher Faulet39a96ee2019-04-08 10:52:21 +0200503 if (conn) {
504 conn->mux = NULL;
505 conn->ctx = NULL;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200506
Christopher Faulet39a96ee2019-04-08 10:52:21 +0200507 conn_stop_tracking(conn);
508 conn_full_close(conn);
509 if (conn->destroy_cb)
510 conn->destroy_cb(conn);
511 conn_free(conn);
512 }
Christopher Faulet51dbc942018-09-13 09:05:15 +0200513}
514
515/******************************************************/
516/* functions below are for the H1 protocol processing */
517/******************************************************/
Christopher Faulet9768c262018-10-22 09:34:31 +0200518/* Parse the request version and set H1_MF_VER_11 on <h1m> if the version is
519 * greater or equal to 1.1
Christopher Fauletf2824e62018-10-01 12:12:37 +0200520 */
Christopher Faulet570d1612018-11-26 11:13:57 +0100521static void h1_parse_req_vsn(struct h1m *h1m, const struct htx_sl *sl)
Christopher Fauletf2824e62018-10-01 12:12:37 +0200522{
Christopher Faulet570d1612018-11-26 11:13:57 +0100523 const char *p = HTX_SL_REQ_VPTR(sl);
Christopher Faulet9768c262018-10-22 09:34:31 +0200524
Christopher Faulet570d1612018-11-26 11:13:57 +0100525 if ((HTX_SL_REQ_VLEN(sl) == 8) &&
Christopher Faulet9768c262018-10-22 09:34:31 +0200526 (*(p + 5) > '1' ||
527 (*(p + 5) == '1' && *(p + 7) >= '1')))
528 h1m->flags |= H1_MF_VER_11;
529}
Christopher Fauletf2824e62018-10-01 12:12:37 +0200530
Christopher Faulet9768c262018-10-22 09:34:31 +0200531/* Parse the response version and set H1_MF_VER_11 on <h1m> if the version is
532 * greater or equal to 1.1
533 */
Christopher Faulet570d1612018-11-26 11:13:57 +0100534static void h1_parse_res_vsn(struct h1m *h1m, const struct htx_sl *sl)
Christopher Faulet9768c262018-10-22 09:34:31 +0200535{
Christopher Faulet570d1612018-11-26 11:13:57 +0100536 const char *p = HTX_SL_RES_VPTR(sl);
Christopher Fauletf2824e62018-10-01 12:12:37 +0200537
Christopher Faulet570d1612018-11-26 11:13:57 +0100538 if ((HTX_SL_RES_VLEN(sl) == 8) &&
Christopher Faulet9768c262018-10-22 09:34:31 +0200539 (*(p + 5) > '1' ||
540 (*(p + 5) == '1' && *(p + 7) >= '1')))
541 h1m->flags |= H1_MF_VER_11;
542}
Christopher Fauletf2824e62018-10-01 12:12:37 +0200543
Christopher Faulet9768c262018-10-22 09:34:31 +0200544/*
545 * Check the validity of the request version. If the version is valid, it
546 * returns 1. Otherwise, it returns 0.
547 */
548static int h1_process_req_vsn(struct h1s *h1s, struct h1m *h1m, union h1_sl sl)
549{
550 struct h1c *h1c = h1s->h1c;
551
552 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
553 * exactly one digit "." one digit. This check may be disabled using
554 * option accept-invalid-http-request.
555 */
556 if (!(h1c->px->options2 & PR_O2_REQBUG_OK)) {
557 if (sl.rq.v.len != 8)
558 return 0;
559
560 if (*(sl.rq.v.ptr + 4) != '/' ||
561 !isdigit((unsigned char)*(sl.rq.v.ptr + 5)) ||
562 *(sl.rq.v.ptr + 6) != '.' ||
563 !isdigit((unsigned char)*(sl.rq.v.ptr + 7)))
564 return 0;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200565 }
Christopher Faulet9768c262018-10-22 09:34:31 +0200566 else if (!sl.rq.v.len) {
567 /* try to convert HTTP/0.9 requests to HTTP/1.0 */
Christopher Fauletf2824e62018-10-01 12:12:37 +0200568
Christopher Faulet9768c262018-10-22 09:34:31 +0200569 /* RFC 1945 allows only GET for HTTP/0.9 requests */
570 if (sl.rq.meth != HTTP_METH_GET)
571 return 0;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200572
Christopher Faulet9768c262018-10-22 09:34:31 +0200573 /* HTTP/0.9 requests *must* have a request URI, per RFC 1945 */
574 if (!sl.rq.u.len)
575 return 0;
576
577 /* Add HTTP version */
578 sl.rq.v = ist("HTTP/1.0");
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100579 return 1;
Christopher Faulet9768c262018-10-22 09:34:31 +0200580 }
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100581
582 if ((sl.rq.v.len == 8) &&
Christopher Fauletaa75b3d2018-12-05 16:20:40 +0100583 ((*(sl.rq.v.ptr + 5) > '1') ||
584 ((*(sl.rq.v.ptr + 5) == '1') && (*(sl.rq.v.ptr + 7) >= '1'))))
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100585 h1m->flags |= H1_MF_VER_11;
Christopher Faulet9768c262018-10-22 09:34:31 +0200586 return 1;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200587}
588
Christopher Faulet9768c262018-10-22 09:34:31 +0200589/*
590 * Check the validity of the response version. If the version is valid, it
591 * returns 1. Otherwise, it returns 0.
Christopher Fauletf2824e62018-10-01 12:12:37 +0200592 */
Christopher Faulet9768c262018-10-22 09:34:31 +0200593static int h1_process_res_vsn(struct h1s *h1s, struct h1m *h1m, union h1_sl sl)
Christopher Fauletf2824e62018-10-01 12:12:37 +0200594{
Christopher Faulet9768c262018-10-22 09:34:31 +0200595 struct h1c *h1c = h1s->h1c;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200596
Christopher Faulet9768c262018-10-22 09:34:31 +0200597 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
598 * exactly one digit "." one digit. This check may be disabled using
599 * option accept-invalid-http-request.
600 */
601 if (!(h1c->px->options2 & PR_O2_RSPBUG_OK)) {
602 if (sl.st.v.len != 8)
603 return 0;
604
605 if (*(sl.st.v.ptr + 4) != '/' ||
606 !isdigit((unsigned char)*(sl.st.v.ptr + 5)) ||
607 *(sl.st.v.ptr + 6) != '.' ||
608 !isdigit((unsigned char)*(sl.st.v.ptr + 7)))
609 return 0;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200610 }
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100611
612 if ((sl.st.v.len == 8) &&
Christopher Fauletaa75b3d2018-12-05 16:20:40 +0100613 ((*(sl.st.v.ptr + 5) > '1') ||
614 ((*(sl.st.v.ptr + 5) == '1') && (*(sl.st.v.ptr + 7) >= '1'))))
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100615 h1m->flags |= H1_MF_VER_11;
616
Christopher Faulet9768c262018-10-22 09:34:31 +0200617 return 1;
618}
Christopher Fauletf2824e62018-10-01 12:12:37 +0200619
620/* Deduce the connection mode of the client connection, depending on the
621 * configuration and the H1 message flags. This function is called twice, the
622 * first time when the request is parsed and the second time when the response
623 * is parsed.
624 */
625static void h1_set_cli_conn_mode(struct h1s *h1s, struct h1m *h1m)
626{
627 struct proxy *fe = h1s->h1c->px;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200628
629 if (h1m->flags & H1_MF_RESP) {
Christopher Fauletb992af02019-03-28 15:42:24 +0100630 /* Output direction: second pass */
Christopher Fauletf2824e62018-10-01 12:12:37 +0200631 if ((h1s->meth == HTTP_METH_CONNECT && h1s->status == 200) ||
Christopher Fauletb992af02019-03-28 15:42:24 +0100632 h1s->status == 101) {
633 /* Either we've established an explicit tunnel, or we're
634 * switching the protocol. In both cases, we're very unlikely to
635 * understand the next protocols. We have to switch to tunnel
636 * mode, so that we transfer the request and responses then let
637 * this protocol pass unmodified. When we later implement
638 * specific parsers for such protocols, we'll want to check the
639 * Upgrade header which contains information about that protocol
640 * for responses with status 101 (eg: see RFC2817 about TLS).
641 */
Christopher Fauletf2824e62018-10-01 12:12:37 +0200642 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_TUN;
Christopher Fauletb992af02019-03-28 15:42:24 +0100643 }
644 else if (h1s->flags & H1S_F_WANT_KAL) {
645 /* By default the client is in KAL mode. CLOSE mode mean
646 * it is imposed by the client itself. So only change
647 * KAL mode here. */
648 if (!(h1m->flags & H1_MF_XFER_LEN) || (h1m->flags & H1_MF_CONN_CLO)) {
649 /* no length known or explicit close => close */
650 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
651 }
652 else if (!(h1m->flags & H1_MF_CONN_KAL) &&
653 (fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_CLO) {
654 /* no explict keep-alive and option httpclose => close */
655 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
656 }
657 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200658 }
659 else {
Christopher Fauletb992af02019-03-28 15:42:24 +0100660 /* Input direction: first pass */
661 if (!(h1m->flags & (H1_MF_VER_11|H1_MF_CONN_KAL)) || h1m->flags & H1_MF_CONN_CLO) {
662 /* no explicit keep-alive in HTTP/1.0 or explicit close => close*/
Christopher Fauletf2824e62018-10-01 12:12:37 +0200663 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Fauletb992af02019-03-28 15:42:24 +0100664 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200665 }
666
667 /* If KAL, check if the frontend is stopping. If yes, switch in CLO mode */
668 if (h1s->flags & H1S_F_WANT_KAL && fe->state == PR_STSTOPPED)
669 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
670}
671
672/* Deduce the connection mode of the client connection, depending on the
673 * configuration and the H1 message flags. This function is called twice, the
674 * first time when the request is parsed and the second time when the response
675 * is parsed.
676 */
677static void h1_set_srv_conn_mode(struct h1s *h1s, struct h1m *h1m)
678{
Olivier Houchardf502aca2018-12-14 19:42:40 +0100679 struct session *sess = h1s->sess;
Christopher Fauletb992af02019-03-28 15:42:24 +0100680 struct proxy *be = h1s->h1c->px;
Olivier Houchardf502aca2018-12-14 19:42:40 +0100681 int fe_flags = sess ? sess->fe->options : 0;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200682
Christopher Fauletf2824e62018-10-01 12:12:37 +0200683 if (h1m->flags & H1_MF_RESP) {
Christopher Fauletb992af02019-03-28 15:42:24 +0100684 /* Input direction: second pass */
685
Christopher Fauletf2824e62018-10-01 12:12:37 +0200686 if ((h1s->meth == HTTP_METH_CONNECT && h1s->status == 200) ||
Christopher Fauletb992af02019-03-28 15:42:24 +0100687 h1s->status == 101) {
688 /* Either we've established an explicit tunnel, or we're
689 * switching the protocol. In both cases, we're very unlikely to
690 * understand the next protocols. We have to switch to tunnel
691 * mode, so that we transfer the request and responses then let
692 * this protocol pass unmodified. When we later implement
693 * specific parsers for such protocols, we'll want to check the
694 * Upgrade header which contains information about that protocol
695 * for responses with status 101 (eg: see RFC2817 about TLS).
696 */
Christopher Fauletf2824e62018-10-01 12:12:37 +0200697 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_TUN;
Christopher Fauletb992af02019-03-28 15:42:24 +0100698 }
699 else if (h1s->flags & H1S_F_WANT_KAL) {
700 /* By default the server is in KAL mode. CLOSE mode mean
701 * it is imposed by haproxy itself. So only change KAL
702 * mode here. */
703 if (!(h1m->flags & H1_MF_XFER_LEN) || h1m->flags & H1_MF_CONN_CLO ||
704 !(h1m->flags & (H1_MF_VER_11|H1_MF_CONN_KAL))){
705 /* no length known or explicit close or no explicit keep-alive in HTTP/1.0 => close */
706 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
707 }
708 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200709 }
Christopher Faulet70033782018-12-05 13:50:11 +0100710 else {
Christopher Fauletb992af02019-03-28 15:42:24 +0100711 /* Output direction: first pass */
712 if (h1m->flags & H1_MF_CONN_CLO) {
713 /* explicit close => close */
Christopher Faulet70033782018-12-05 13:50:11 +0100714 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Fauletb992af02019-03-28 15:42:24 +0100715 }
716 else if (!(h1m->flags & H1_MF_CONN_KAL) &&
717 ((fe_flags & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
718 (be->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
719 (fe_flags & PR_O_HTTP_MODE) == PR_O_HTTP_CLO ||
720 (be->options & PR_O_HTTP_MODE) == PR_O_HTTP_CLO)) {
721 /* no explicit keep-alive option httpclose/server-close => close */
722 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
723 }
Christopher Faulet70033782018-12-05 13:50:11 +0100724 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200725
726 /* If KAL, check if the backend is stopping. If yes, switch in CLO mode */
727 if (h1s->flags & H1S_F_WANT_KAL && be->state == PR_STSTOPPED)
728 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200729}
730
Christopher Fauletb992af02019-03-28 15:42:24 +0100731static void h1_update_req_conn_value(struct h1s *h1s, struct h1m *h1m, struct ist *conn_val)
Christopher Fauletf2824e62018-10-01 12:12:37 +0200732{
733 struct proxy *px = h1s->h1c->px;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200734
735 /* Don't update "Connection:" header in TUNNEL mode or if "Upgrage"
736 * token is found
737 */
738 if (h1s->flags & H1S_F_WANT_TUN || h1m->flags & H1_MF_CONN_UPG)
Christopher Faulet9768c262018-10-22 09:34:31 +0200739 return;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200740
741 if (h1s->flags & H1S_F_WANT_KAL || px->options2 & PR_O2_FAKE_KA) {
Christopher Fauletb992af02019-03-28 15:42:24 +0100742 if (!(h1m->flags & H1_MF_VER_11))
743 *conn_val = ist("keep-alive");
Christopher Fauletf2824e62018-10-01 12:12:37 +0200744 }
745 else { /* H1S_F_WANT_CLO && !PR_O2_FAKE_KA */
Christopher Fauletb992af02019-03-28 15:42:24 +0100746 if (h1m->flags & H1_MF_VER_11)
747 *conn_val = ist("close");
Christopher Fauletf2824e62018-10-01 12:12:37 +0200748 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200749}
750
Christopher Fauletb992af02019-03-28 15:42:24 +0100751static void h1_update_res_conn_value(struct h1s *h1s, struct h1m *h1m, struct ist *conn_val)
Christopher Fauletf2824e62018-10-01 12:12:37 +0200752{
Christopher Fauletf2824e62018-10-01 12:12:37 +0200753 /* Don't update "Connection:" header in TUNNEL mode or if "Upgrage"
754 * token is found
755 */
756 if (h1s->flags & H1S_F_WANT_TUN || h1m->flags & H1_MF_CONN_UPG)
Christopher Faulet9768c262018-10-22 09:34:31 +0200757 return;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200758
759 if (h1s->flags & H1S_F_WANT_KAL) {
Christopher Fauletb992af02019-03-28 15:42:24 +0100760 if (!(h1m->flags & H1_MF_VER_11) ||
761 !((h1m->flags & h1s->req.flags) & H1_MF_VER_11))
762 *conn_val = ist("keep-alive");
Christopher Fauletf2824e62018-10-01 12:12:37 +0200763 }
764 else { /* H1S_F_WANT_CLO */
Christopher Fauletb992af02019-03-28 15:42:24 +0100765 if (h1m->flags & H1_MF_VER_11)
766 *conn_val = ist("close");
Christopher Fauletf2824e62018-10-01 12:12:37 +0200767 }
Christopher Faulet9768c262018-10-22 09:34:31 +0200768}
Christopher Fauletf2824e62018-10-01 12:12:37 +0200769
Christopher Fauletb992af02019-03-28 15:42:24 +0100770static void h1_process_input_conn_mode(struct h1s *h1s, struct h1m *h1m, struct htx *htx)
Christopher Faulet9768c262018-10-22 09:34:31 +0200771{
Christopher Fauletb992af02019-03-28 15:42:24 +0100772 if (!conn_is_back(h1s->h1c->conn))
Christopher Faulet9768c262018-10-22 09:34:31 +0200773 h1_set_cli_conn_mode(h1s, h1m);
Christopher Fauletb992af02019-03-28 15:42:24 +0100774 else
Christopher Faulet9768c262018-10-22 09:34:31 +0200775 h1_set_srv_conn_mode(h1s, h1m);
Christopher Fauletf2824e62018-10-01 12:12:37 +0200776}
777
Christopher Fauletb992af02019-03-28 15:42:24 +0100778static void h1_process_output_conn_mode(struct h1s *h1s, struct h1m *h1m, struct ist *conn_val)
779{
780 if (!conn_is_back(h1s->h1c->conn))
781 h1_set_cli_conn_mode(h1s, h1m);
782 else
783 h1_set_srv_conn_mode(h1s, h1m);
784
785 if (!(h1m->flags & H1_MF_RESP))
786 h1_update_req_conn_value(h1s, h1m, conn_val);
787 else
788 h1_update_res_conn_value(h1s, h1m, conn_val);
789}
Christopher Faulete44769b2018-11-29 23:01:45 +0100790
791/* Append the description of what is present in error snapshot <es> into <out>.
792 * The description must be small enough to always fit in a buffer. The output
793 * buffer may be the trash so the trash must not be used inside this function.
794 */
795static void h1_show_error_snapshot(struct buffer *out, const struct error_snapshot *es)
796{
797 chunk_appendf(out,
Christopher Fauletaa75b3d2018-12-05 16:20:40 +0100798 " H1 connection flags 0x%08x, H1 stream flags 0x%08x\n"
799 " H1 msg state %s(%d), H1 msg flags 0x%08x\n"
800 " H1 chunk len %lld bytes, H1 body len %lld bytes :\n",
801 es->ctx.h1.c_flags, es->ctx.h1.s_flags,
802 h1m_state_str(es->ctx.h1.state), es->ctx.h1.state,
803 es->ctx.h1.m_flags, es->ctx.h1.m_clen, es->ctx.h1.m_blen);
Christopher Faulete44769b2018-11-29 23:01:45 +0100804}
805/*
806 * Capture a bad request or response and archive it in the proxy's structure.
807 * By default it tries to report the error position as h1m->err_pos. However if
808 * this one is not set, it will then report h1m->next, which is the last known
809 * parsing point. The function is able to deal with wrapping buffers. It always
810 * displays buffers as a contiguous area starting at buf->p. The direction is
811 * determined thanks to the h1m's flags.
812 */
813static void h1_capture_bad_message(struct h1c *h1c, struct h1s *h1s,
814 struct h1m *h1m, struct buffer *buf)
815{
816 struct session *sess = h1c->conn->owner;
817 struct proxy *proxy = h1c->px;
818 struct proxy *other_end = sess->fe;
819 union error_snapshot_ctx ctx;
820
Willy Tarreau598d7fc2018-12-18 18:10:38 +0100821 if (h1s->cs->data && !(h1m->flags & H1_MF_RESP))
Christopher Faulete44769b2018-11-29 23:01:45 +0100822 other_end = si_strm(h1s->cs->data)->be;
823
824 /* http-specific part now */
825 ctx.h1.state = h1m->state;
826 ctx.h1.c_flags = h1c->flags;
827 ctx.h1.s_flags = h1s->flags;
828 ctx.h1.m_flags = h1m->flags;
829 ctx.h1.m_clen = h1m->curr_len;
830 ctx.h1.m_blen = h1m->body_len;
831
832 proxy_capture_error(proxy, !!(h1m->flags & H1_MF_RESP), other_end,
833 h1c->conn->target, sess, buf, 0, 0,
Christopher Fauletaa75b3d2018-12-05 16:20:40 +0100834 (h1m->err_pos >= 0) ? h1m->err_pos : h1m->next,
835 &ctx, h1_show_error_snapshot);
Christopher Faulete44769b2018-11-29 23:01:45 +0100836}
837
Christopher Fauletadb22202018-12-12 10:32:09 +0100838/* Emit the chunksize followed by a CRLF in front of data of the buffer
839 * <buf>. It goes backwards and starts with the byte before the buffer's
840 * head. The caller is responsible for ensuring there is enough room left before
841 * the buffer's head for the string.
842 */
843static void h1_emit_chunk_size(struct buffer *buf, size_t chksz)
844{
845 char *beg, *end;
846
847 beg = end = b_head(buf);
848 *--beg = '\n';
849 *--beg = '\r';
850 do {
851 *--beg = hextab[chksz & 0xF];
852 } while (chksz >>= 4);
853 buf->head -= (end - beg);
854 b_add(buf, end - beg);
855}
856
857/* Emit a CRLF after the data of the buffer <buf>. The caller is responsible for
858 * ensuring there is enough room left in the buffer for the string. */
859static void h1_emit_chunk_crlf(struct buffer *buf)
860{
861 *(b_peek(buf, b_data(buf))) = '\r';
862 *(b_peek(buf, b_data(buf) + 1)) = '\n';
863 b_add(buf, 2);
864}
865
Christopher Faulet129817b2018-09-20 16:14:40 +0200866/*
Christopher Fauletc62c2b92019-03-28 11:41:39 +0100867 * Switch the request to tunnel mode. This function must only be called for
868 * CONNECT requests. On the client side, the mux is mark as busy on input,
869 * waiting the response.
870 */
871static void h1_set_req_tunnel_mode(struct h1s *h1s)
872{
873 h1s->req.flags &= ~(H1_MF_XFER_LEN|H1_MF_CLEN|H1_MF_CHNK);
874 h1s->req.state = H1_MSG_TUNNEL;
875 if (!conn_is_back(h1s->h1c->conn))
876 h1s->h1c->flags |= H1C_F_IN_BUSY;
877}
878
879/*
880 * Switch the response to tunnel mode. This function must only be called on
881 * successfull replies to CONNECT requests or on protocol switching. On the
882 * server side, if the request is not finished, the mux is mark as busy on
883 * input. Otherwise the request is also switch to tunnel mode.
884 */
885static void h1_set_res_tunnel_mode(struct h1s *h1s)
886{
887 h1s->res.flags &= ~(H1_MF_XFER_LEN|H1_MF_CLEN|H1_MF_CHNK);
888 h1s->res.state = H1_MSG_TUNNEL;
889 if (conn_is_back(h1s->h1c->conn) && h1s->req.state < H1_MSG_DONE)
890 h1s->h1c->flags |= H1C_F_IN_BUSY;
891 else {
892 h1s->req.flags &= ~(H1_MF_XFER_LEN|H1_MF_CLEN|H1_MF_CHNK);
893 h1s->req.state = H1_MSG_TUNNEL;
894 if (h1s->h1c->flags & H1C_F_IN_BUSY) {
895 h1s->h1c->flags &= ~H1C_F_IN_BUSY;
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200896 tasklet_wakeup(h1s->h1c->wait_event.tasklet);
Christopher Fauletc62c2b92019-03-28 11:41:39 +0100897 }
898 }
899}
900
Christopher Faulet82f01602019-05-24 16:50:16 +0200901/* Estimate the size of the HTX headers after the parsing, including the EOH. */
902static size_t h1_eval_htx_hdrs_size(struct http_hdr *hdrs)
903{
904 size_t sz = 0;
905 int i;
906
907 for (i = 0; hdrs[i].n.len; i++)
908 sz += sizeof(struct htx_blk) + hdrs[i].n.len + hdrs[i].v.len;
909 sz += sizeof(struct htx_blk) + 1;
910 return sz;
911}
912
Christopher Faulet30db3d72019-05-17 15:35:33 +0200913/* Estimate the size of the HTX request after the parsing. */
914static size_t h1_eval_htx_req_size(struct h1m *h1m, union h1_sl *h1sl, struct http_hdr *hdrs)
915{
916 size_t sz;
Christopher Faulet30db3d72019-05-17 15:35:33 +0200917
918 /* size of the HTX start-line */
919 sz = sizeof(struct htx_sl) + h1sl->rq.m.len + h1sl->rq.u.len + h1sl->rq.v.len;
Christopher Faulet82f01602019-05-24 16:50:16 +0200920 sz += h1_eval_htx_hdrs_size(hdrs);
Christopher Faulet30db3d72019-05-17 15:35:33 +0200921 return sz;
922}
923
924/* Estimate the size of the HTX response after the parsing. */
925static size_t h1_eval_htx_res_size(struct h1m *h1m, union h1_sl *h1sl, struct http_hdr *hdrs)
926{
927 size_t sz;
Christopher Faulet30db3d72019-05-17 15:35:33 +0200928
929 /* size of the HTX start-line */
930 sz = sizeof(struct htx_sl) + h1sl->st.v.len + h1sl->st.c.len + h1sl->st.r.len;
Christopher Faulet82f01602019-05-24 16:50:16 +0200931 sz += h1_eval_htx_hdrs_size(hdrs);
Christopher Faulet30db3d72019-05-17 15:35:33 +0200932 return sz;
933}
934
Christopher Fauletc62c2b92019-03-28 11:41:39 +0100935/*
Christopher Faulet2d7c5392019-06-03 10:41:26 +0200936 * Add the EOM in the HTX message and switch the message to the DONE state. It
937 * returns the number of bytes parsed if > 0, or 0 if iet couldn't proceed. This
938 * functions is responsible to update the parser state <h1m>. It also add the
939 * flag CS_FL_EOI on the CS.
940 */
941static size_t h1_process_eom(struct h1s *h1s, struct h1m *h1m, struct htx *htx, size_t max)
942{
943 if (max < sizeof(struct htx_blk) + 1 || !htx_add_endof(htx, HTX_BLK_EOM))
944 return 0;
945
946 h1m->state = H1_MSG_DONE;
947 h1s->cs->flags |= CS_FL_EOI;
948 return (sizeof(struct htx_blk) + 1);
949}
950
951/*
Christopher Faulet129817b2018-09-20 16:14:40 +0200952 * Parse HTTP/1 headers. It returns the number of bytes parsed if > 0, or 0 if
Christopher Fauletf2824e62018-10-01 12:12:37 +0200953 * it couldn't proceed. Parsing errors are reported by setting H1S_F_*_ERROR
954 * flag and filling h1s->err_pos and h1s->err_state fields. This functions is
Joseph Herlant30bc5092018-11-25 10:52:20 -0800955 * responsible to update the parser state <h1m>.
Christopher Faulet129817b2018-09-20 16:14:40 +0200956 */
Christopher Faulet9768c262018-10-22 09:34:31 +0200957static size_t h1_process_headers(struct h1s *h1s, struct h1m *h1m, struct htx *htx,
Christopher Fauletf2824e62018-10-01 12:12:37 +0200958 struct buffer *buf, size_t *ofs, size_t max)
Christopher Faulet129817b2018-09-20 16:14:40 +0200959{
Christopher Fauleta39d8ad2019-05-15 15:54:39 +0200960 struct htx_sl *sl;
Christopher Faulete4ab11b2019-06-11 15:05:37 +0200961 struct http_hdr hdrs[global.tune.max_http_hdr];
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100962 union h1_sl h1sl;
963 unsigned int flags = HTX_SL_F_NONE;
Christopher Fauleta39d8ad2019-05-15 15:54:39 +0200964 size_t used;
Christopher Faulet129817b2018-09-20 16:14:40 +0200965 int ret = 0;
966
Christopher Faulet30db3d72019-05-17 15:35:33 +0200967 if (!max || !b_data(buf))
Christopher Fauletd44ad5b2018-11-19 21:52:12 +0100968 goto end;
969
Christopher Faulet129817b2018-09-20 16:14:40 +0200970 /* Realing input buffer if necessary */
971 if (b_head(buf) + b_data(buf) > b_wrap(buf))
972 b_slow_realign(buf, trash.area, 0);
973
Christopher Faulet0ef372a2019-04-08 10:57:20 +0200974 if (!(h1m->flags & H1_MF_RESP)) {
975 /* Try to match H2 preface before parsing the request headers. */
976 ret = b_isteq(buf, 0, b_data(buf), ist(H2_CONN_PREFACE));
977 if (ret > 0)
978 goto h2c_upgrade;
979 }
980
Christopher Faulet30db3d72019-05-17 15:35:33 +0200981 ret = h1_headers_to_hdr_list(b_peek(buf, *ofs), b_tail(buf),
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100982 hdrs, sizeof(hdrs)/sizeof(hdrs[0]), h1m, &h1sl);
Christopher Faulet129817b2018-09-20 16:14:40 +0200983 if (ret <= 0) {
984 /* Incomplete or invalid message. If the buffer is full, it's an
985 * error because headers are too large to be handled by the
986 * parser. */
Christopher Fauletf2824e62018-10-01 12:12:37 +0200987 if (ret < 0 || (!ret && b_full(buf)))
988 goto error;
Christopher Faulet129817b2018-09-20 16:14:40 +0200989 goto end;
990 }
991
992 /* messages headers fully parsed, do some checks to prepare the body
993 * parsing.
994 */
995
Christopher Faulet9768c262018-10-22 09:34:31 +0200996 /* Save the request's method or the response's status, check if the body
997 * length is known and check the VSN validity */
Christopher Faulet129817b2018-09-20 16:14:40 +0200998 if (!(h1m->flags & H1_MF_RESP)) {
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100999 h1s->meth = h1sl.rq.meth;
Christopher Faulet9768c262018-10-22 09:34:31 +02001000
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001001 /* By default, request have always a known length */
Christopher Faulet129817b2018-09-20 16:14:40 +02001002 h1m->flags |= H1_MF_XFER_LEN;
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001003
1004 if (h1s->meth == HTTP_METH_CONNECT) {
1005 /* Switch CONNECT requests to tunnel mode */
1006 h1_set_req_tunnel_mode(h1s);
1007 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001008
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001009 if (!h1_process_req_vsn(h1s, h1m, h1sl)) {
1010 h1m->err_pos = h1sl.rq.v.ptr - b_head(buf);
Christopher Faulet9768c262018-10-22 09:34:31 +02001011 h1m->err_state = h1m->state;
1012 goto vsn_error;
1013 }
Christopher Faulet129817b2018-09-20 16:14:40 +02001014 }
1015 else {
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001016 h1s->status = h1sl.st.status;
Christopher Faulet129817b2018-09-20 16:14:40 +02001017
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001018 if ((h1s->meth == HTTP_METH_CONNECT && h1s->status == 200) ||
1019 h1s->status == 101) {
1020 /* Switch successfull replies to CONNECT requests and
1021 * protocol switching to tunnel mode. */
1022 h1_set_res_tunnel_mode(h1s);
1023 }
1024 else if ((h1s->meth == HTTP_METH_HEAD) ||
1025 (h1s->status >= 100 && h1s->status < 200) ||
1026 (h1s->status == 204) || (h1s->status == 304)) {
Christopher Fauletb75b5ea2019-05-17 08:37:28 +02001027 /* Responses known to have no body. */
Christopher Faulet129817b2018-09-20 16:14:40 +02001028 h1m->flags &= ~(H1_MF_CLEN|H1_MF_CHNK);
1029 h1m->flags |= H1_MF_XFER_LEN;
1030 h1m->curr_len = h1m->body_len = 0;
Christopher Faulet129817b2018-09-20 16:14:40 +02001031 }
1032 else if (h1m->flags & (H1_MF_CLEN|H1_MF_CHNK)) {
Christopher Fauletb75b5ea2019-05-17 08:37:28 +02001033 /* Responses with a known body length. */
Christopher Faulet129817b2018-09-20 16:14:40 +02001034 h1m->flags |= H1_MF_XFER_LEN;
Christopher Faulet129817b2018-09-20 16:14:40 +02001035 }
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001036 else {
1037 /* Responses with an unknown body length */
Christopher Faulet129817b2018-09-20 16:14:40 +02001038 h1m->state = H1_MSG_TUNNEL;
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001039 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001040
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001041 if (!h1_process_res_vsn(h1s, h1m, h1sl)) {
1042 h1m->err_pos = h1sl.st.v.ptr - b_head(buf);
Christopher Faulet9768c262018-10-22 09:34:31 +02001043 h1m->err_state = h1m->state;
1044 goto vsn_error;
1045 }
Christopher Faulet129817b2018-09-20 16:14:40 +02001046 }
1047
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001048 /* Set HTX start-line flags */
1049 if (h1m->flags & H1_MF_VER_11)
1050 flags |= HTX_SL_F_VER_11;
1051 if (h1m->flags & H1_MF_XFER_ENC)
1052 flags |= HTX_SL_F_XFER_ENC;
1053 if (h1m->flags & H1_MF_XFER_LEN) {
1054 flags |= HTX_SL_F_XFER_LEN;
1055 if (h1m->flags & H1_MF_CHNK)
1056 flags |= HTX_SL_F_CHNK;
Christopher Fauletb75b5ea2019-05-17 08:37:28 +02001057 else if (h1m->flags & H1_MF_CLEN) {
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001058 flags |= HTX_SL_F_CLEN;
Christopher Fauletb75b5ea2019-05-17 08:37:28 +02001059 if (h1m->body_len == 0)
1060 flags |= HTX_SL_F_BODYLESS;
1061 }
1062 else
Christopher Fauletb2db4fa2018-11-27 16:51:09 +01001063 flags |= HTX_SL_F_BODYLESS;
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001064 }
1065
Christopher Fauleta39d8ad2019-05-15 15:54:39 +02001066 used = htx_used_space(htx);
Christopher Faulet9768c262018-10-22 09:34:31 +02001067 if (!(h1m->flags & H1_MF_RESP)) {
Christopher Fauletb75b5ea2019-05-17 08:37:28 +02001068 if (h1_eval_htx_req_size(h1m, &h1sl, hdrs) > max) {
1069 if (htx_is_empty(htx))
1070 goto error;
1071 h1m_init_req(h1m);
1072 h1m->flags |= (H1_MF_NO_PHDR|H1_MF_CLEAN_CONN_HDR);
1073 ret = 0;
1074 goto end;
1075 }
Christopher Faulet30db3d72019-05-17 15:35:33 +02001076
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001077 sl = htx_add_stline(htx, HTX_BLK_REQ_SL, flags, h1sl.rq.m, h1sl.rq.u, h1sl.rq.v);
1078 if (!sl || !htx_add_all_headers(htx, hdrs))
Christopher Faulet9768c262018-10-22 09:34:31 +02001079 goto error;
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001080 sl->info.req.meth = h1s->meth;
Christopher Faulet42993a82019-06-14 10:31:25 +02001081
1082 /* Check if the uri contains an explicit scheme and if it is
1083 * "http" or "https". */
1084 if (h1sl.rq.u.len && h1sl.rq.u.ptr[0] != '/') {
1085 sl->flags |= HTX_SL_F_HAS_SCHM;
1086 if (h1sl.rq.u.len > 4 && (h1sl.rq.u.ptr[0] | 0x20) == 'h')
1087 sl->flags |= ((h1sl.rq.u.ptr[4] == ':') ? HTX_SL_F_SCHM_HTTP : HTX_SL_F_SCHM_HTTPS);
1088 }
Christopher Fauletf2824e62018-10-01 12:12:37 +02001089 }
1090 else {
Christopher Fauletb75b5ea2019-05-17 08:37:28 +02001091 if (h1_eval_htx_res_size(h1m, &h1sl, hdrs) > max) {
1092 if (htx_is_empty(htx))
1093 goto error;
1094 h1m_init_res(h1m);
1095 h1m->flags |= (H1_MF_NO_PHDR|H1_MF_CLEAN_CONN_HDR);
1096 ret = 0;
1097 goto end;
1098 }
Christopher Faulet30db3d72019-05-17 15:35:33 +02001099
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001100 flags |= HTX_SL_F_IS_RESP;
1101 sl = htx_add_stline(htx, HTX_BLK_RES_SL, flags, h1sl.st.v, h1sl.st.c, h1sl.st.r);
1102 if (!sl || !htx_add_all_headers(htx, hdrs))
Christopher Faulet9768c262018-10-22 09:34:31 +02001103 goto error;
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001104 sl->info.res.status = h1s->status;
Christopher Fauletf2824e62018-10-01 12:12:37 +02001105 }
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001106
Christopher Fauleta39d8ad2019-05-15 15:54:39 +02001107 /* Set bytes used in the HTX mesage for the headers now */
1108 sl->hdrs_bytes = htx_used_space(htx) - used;
1109
Christopher Fauletb992af02019-03-28 15:42:24 +01001110 h1_process_input_conn_mode(h1s, h1m, htx);
Christopher Faulet9768c262018-10-22 09:34:31 +02001111
1112 /* If body length cannot be determined, set htx->extra to
1113 * ULLONG_MAX. This value is impossible in other cases.
1114 */
1115 htx->extra = ((h1m->flags & H1_MF_XFER_LEN) ? h1m->curr_len : ULLONG_MAX);
Christopher Faulet9768c262018-10-22 09:34:31 +02001116 *ofs += ret;
Christopher Faulet129817b2018-09-20 16:14:40 +02001117 end:
1118 return ret;
Christopher Fauletf2824e62018-10-01 12:12:37 +02001119
1120 error:
Christopher Fauletf2824e62018-10-01 12:12:37 +02001121 h1m->err_state = h1m->state;
1122 h1m->err_pos = h1m->next;
Christopher Faulet9768c262018-10-22 09:34:31 +02001123 vsn_error:
1124 h1s->flags |= (!(h1m->flags & H1_MF_RESP) ? H1S_F_REQ_ERROR : H1S_F_RES_ERROR);
Christopher Fauletb75b5ea2019-05-17 08:37:28 +02001125 h1s->cs->flags |= CS_FL_EOI;
1126 htx->flags |= HTX_FL_PARSING_ERROR;
Christopher Faulete44769b2018-11-29 23:01:45 +01001127 h1_capture_bad_message(h1s->h1c, h1s, h1m, buf);
Christopher Fauletf2824e62018-10-01 12:12:37 +02001128 ret = 0;
1129 goto end;
Christopher Faulet0ef372a2019-04-08 10:57:20 +02001130
1131 h2c_upgrade:
1132 h1s->h1c->flags |= H1C_F_UPG_H2C;
Christopher Faulet8e9e3ef2019-05-17 09:14:10 +02001133 h1s->cs->flags |= CS_FL_EOI;
Christopher Faulet0ef372a2019-04-08 10:57:20 +02001134 htx->flags |= HTX_FL_UPGRADE;
1135 ret = 0;
1136 goto end;
Christopher Faulet129817b2018-09-20 16:14:40 +02001137}
1138
1139/*
Christopher Fauletf2824e62018-10-01 12:12:37 +02001140 * Parse HTTP/1 body. It returns the number of bytes parsed if > 0, or 0 if it
1141 * couldn't proceed. Parsing errors are reported by setting H1S_F_*_ERROR flag
Christopher Faulet129817b2018-09-20 16:14:40 +02001142 * and filling h1s->err_pos and h1s->err_state fields. This functions is
Joseph Herlant30bc5092018-11-25 10:52:20 -08001143 * responsible to update the parser state <h1m>.
Christopher Faulet129817b2018-09-20 16:14:40 +02001144 */
Christopher Faulet9768c262018-10-22 09:34:31 +02001145static size_t h1_process_data(struct h1s *h1s, struct h1m *h1m, struct htx *htx,
Christopher Fauletaa75b3d2018-12-05 16:20:40 +01001146 struct buffer *buf, size_t *ofs, size_t max,
Christopher Faulet30db3d72019-05-17 15:35:33 +02001147 struct buffer *htxbuf)
Christopher Faulet129817b2018-09-20 16:14:40 +02001148{
1149 size_t total = 0;
Christopher Faulet30db3d72019-05-17 15:35:33 +02001150 int32_t ret = 0;
Christopher Fauletafe57842019-01-21 11:55:02 +01001151
Christopher Faulet129817b2018-09-20 16:14:40 +02001152 if (h1m->flags & H1_MF_XFER_LEN) {
1153 if (h1m->flags & H1_MF_CLEN) {
1154 /* content-length: read only h2m->body_len */
Christopher Faulet30db3d72019-05-17 15:35:33 +02001155 ret = htx_get_max_blksz(htx, max);
Christopher Faulet129817b2018-09-20 16:14:40 +02001156 if ((uint64_t)ret > h1m->curr_len)
1157 ret = h1m->curr_len;
Christopher Faulet9768c262018-10-22 09:34:31 +02001158 if (ret > b_contig_data(buf, *ofs))
1159 ret = b_contig_data(buf, *ofs);
Christopher Faulet30db3d72019-05-17 15:35:33 +02001160
Christopher Faulet9768c262018-10-22 09:34:31 +02001161 if (ret) {
Willy Tarreau78f548f2018-12-05 10:02:39 +01001162 /* very often with large files we'll face the following
1163 * situation :
1164 * - htx is empty and points to <htxbuf>
1165 * - ret == buf->data
1166 * - buf->head == sizeof(struct htx)
1167 * => we can swap the buffers and place an htx header into
1168 * the target buffer instead
1169 */
Willy Tarreau0a7ef022019-05-28 10:30:11 +02001170 int32_t try = ret;
1171
Willy Tarreau78f548f2018-12-05 10:02:39 +01001172 if (unlikely(htx_is_empty(htx) && ret == b_data(buf) &&
1173 !*ofs && b_head_ofs(buf) == sizeof(struct htx))) {
1174 void *raw_area = buf->area;
1175 void *htx_area = htxbuf->area;
1176 struct htx_blk *blk;
1177
1178 buf->area = htx_area;
1179 htxbuf->area = raw_area;
1180 htx = (struct htx *)htxbuf->area;
1181 htx->size = htxbuf->size - sizeof(*htx);
1182 htx_reset(htx);
1183 b_set_data(htxbuf, b_size(htxbuf));
1184
1185 blk = htx_add_blk(htx, HTX_BLK_DATA, ret);
1186 blk->info += ret;
1187 /* nothing else to do, the old buffer now contains an
1188 * empty pre-initialized HTX header
1189 */
1190 }
Willy Tarreau0a7ef022019-05-28 10:30:11 +02001191 else {
1192 ret = htx_add_data(htx, ist2(b_peek(buf, *ofs), try));
1193 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001194 h1m->curr_len -= ret;
Christopher Faulet30db3d72019-05-17 15:35:33 +02001195 max -= sizeof(struct htx_blk) + ret;
Christopher Faulet9768c262018-10-22 09:34:31 +02001196 *ofs += ret;
1197 total += ret;
Willy Tarreau0a7ef022019-05-28 10:30:11 +02001198 if (ret < try)
1199 goto end;
Christopher Faulet9768c262018-10-22 09:34:31 +02001200 }
1201
1202 if (!h1m->curr_len) {
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001203 if (!h1_process_eom(h1s, h1m, htx, max))
Christopher Faulet9768c262018-10-22 09:34:31 +02001204 goto end;
Christopher Faulet9768c262018-10-22 09:34:31 +02001205 }
Christopher Faulet129817b2018-09-20 16:14:40 +02001206 }
1207 else if (h1m->flags & H1_MF_CHNK) {
1208 new_chunk:
1209 /* te:chunked : parse chunks */
1210 if (h1m->state == H1_MSG_CHUNK_CRLF) {
Christopher Faulet30db3d72019-05-17 15:35:33 +02001211 ret = h1_skip_chunk_crlf(buf, *ofs, b_data(buf));
Christopher Faulet129817b2018-09-20 16:14:40 +02001212 if (ret <= 0)
1213 goto end;
Christopher Faulet9768c262018-10-22 09:34:31 +02001214 h1m->state = H1_MSG_CHUNK_SIZE;
1215
Christopher Fauletf2824e62018-10-01 12:12:37 +02001216 *ofs += ret;
Christopher Faulet129817b2018-09-20 16:14:40 +02001217 total += ret;
Christopher Faulet129817b2018-09-20 16:14:40 +02001218 }
1219
1220 if (h1m->state == H1_MSG_CHUNK_SIZE) {
1221 unsigned int chksz;
1222
Christopher Faulet30db3d72019-05-17 15:35:33 +02001223 ret = h1_parse_chunk_size(buf, *ofs, b_data(buf), &chksz);
Christopher Faulet129817b2018-09-20 16:14:40 +02001224 if (ret <= 0)
1225 goto end;
Christopher Faulet54b5e212019-06-04 10:08:28 +02001226 h1m->state = ((!chksz) ? H1_MSG_TRAILERS : H1_MSG_DATA);
Christopher Faulet9768c262018-10-22 09:34:31 +02001227
Christopher Faulet129817b2018-09-20 16:14:40 +02001228 h1m->curr_len = chksz;
1229 h1m->body_len += chksz;
Christopher Fauletf2824e62018-10-01 12:12:37 +02001230 *ofs += ret;
Christopher Faulet129817b2018-09-20 16:14:40 +02001231 total += ret;
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001232
1233 if (!h1m->curr_len)
1234 goto end;
Christopher Faulet129817b2018-09-20 16:14:40 +02001235 }
1236
1237 if (h1m->state == H1_MSG_DATA) {
Christopher Faulet30db3d72019-05-17 15:35:33 +02001238 ret = htx_get_max_blksz(htx, max);
Christopher Faulet129817b2018-09-20 16:14:40 +02001239 if ((uint64_t)ret > h1m->curr_len)
1240 ret = h1m->curr_len;
Christopher Faulet9768c262018-10-22 09:34:31 +02001241 if (ret > b_contig_data(buf, *ofs))
1242 ret = b_contig_data(buf, *ofs);
Christopher Faulet30db3d72019-05-17 15:35:33 +02001243
Christopher Faulet9768c262018-10-22 09:34:31 +02001244 if (ret) {
Willy Tarreau0a7ef022019-05-28 10:30:11 +02001245 int32_t try = ret;
1246
1247 ret = htx_add_data(htx, ist2(b_peek(buf, *ofs), try));
Christopher Faulet9768c262018-10-22 09:34:31 +02001248 h1m->curr_len -= ret;
Christopher Faulet30db3d72019-05-17 15:35:33 +02001249 max -= sizeof(struct htx_blk) + ret;
Christopher Faulet9768c262018-10-22 09:34:31 +02001250 *ofs += ret;
1251 total += ret;
Willy Tarreau0a7ef022019-05-28 10:30:11 +02001252 if (ret < try)
1253 goto end;
Christopher Faulet9768c262018-10-22 09:34:31 +02001254 }
1255 if (!h1m->curr_len) {
1256 h1m->state = H1_MSG_CHUNK_CRLF;
1257 goto new_chunk;
1258 }
1259 goto end;
Christopher Faulet129817b2018-09-20 16:14:40 +02001260 }
Christopher Faulet129817b2018-09-20 16:14:40 +02001261 }
1262 else {
1263 /* XFER_LEN is set but not CLEN nor CHNK, it means there
1264 * is no body. Switch the message in DONE state
1265 */
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001266 if (!h1_process_eom(h1s, h1m, htx, max))
Christopher Faulet9768c262018-10-22 09:34:31 +02001267 goto end;
Christopher Faulet129817b2018-09-20 16:14:40 +02001268 }
1269 }
1270 else {
1271 /* no content length, read till SHUTW */
Christopher Faulet30db3d72019-05-17 15:35:33 +02001272 ret = htx_get_max_blksz(htx, max);
Christopher Faulet9768c262018-10-22 09:34:31 +02001273 if (ret > b_contig_data(buf, *ofs))
1274 ret = b_contig_data(buf, *ofs);
Christopher Faulet30db3d72019-05-17 15:35:33 +02001275
Christopher Faulet9768c262018-10-22 09:34:31 +02001276 if (ret) {
Willy Tarreau0a7ef022019-05-28 10:30:11 +02001277 int32_t try = ret;
1278
1279 ret = htx_add_data(htx, ist2(b_peek(buf, *ofs), try));
Christopher Faulet9768c262018-10-22 09:34:31 +02001280
Olivier Houchardcf42d5a2018-12-04 17:41:58 +01001281 *ofs += ret;
1282 total = ret;
Willy Tarreau0a7ef022019-05-28 10:30:11 +02001283 if (ret < try)
1284 goto end;
Christopher Faulet9768c262018-10-22 09:34:31 +02001285 }
Christopher Faulet129817b2018-09-20 16:14:40 +02001286 }
1287
1288 end:
1289 if (ret < 0) {
Christopher Fauletf2824e62018-10-01 12:12:37 +02001290 h1s->flags |= (!(h1m->flags & H1_MF_RESP) ? H1S_F_REQ_ERROR : H1S_F_RES_ERROR);
Christopher Fauletb75b5ea2019-05-17 08:37:28 +02001291 h1s->cs->flags |= CS_FL_EOI;
1292 htx->flags |= HTX_FL_PARSING_ERROR;
Christopher Faulet129817b2018-09-20 16:14:40 +02001293 h1m->err_state = h1m->state;
Christopher Fauletf2824e62018-10-01 12:12:37 +02001294 h1m->err_pos = *ofs + max + ret;
Christopher Faulete44769b2018-11-29 23:01:45 +01001295 h1_capture_bad_message(h1s->h1c, h1s, h1m, buf);
Christopher Faulet129817b2018-09-20 16:14:40 +02001296 return 0;
1297 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001298 /* update htx->extra, only when the body length is known */
1299 if (h1m->flags & H1_MF_XFER_LEN)
1300 htx->extra = h1m->curr_len;
Christopher Faulet129817b2018-09-20 16:14:40 +02001301 return total;
1302}
1303
1304/*
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001305 * Parse HTTP/1 trailers. It returns the number of bytes parsed if > 0, or 0 if
1306 * it couldn't proceed. Parsing errors are reported by setting H1S_F_*_ERROR
1307 * flag and filling h1s->err_pos and h1s->err_state fields. This functions is
1308 * responsible to update the parser state <h1m>.
1309 */
1310static size_t h1_process_trailers(struct h1s *h1s, struct h1m *h1m, struct htx *htx,
1311 struct buffer *buf, size_t *ofs, size_t max)
1312{
Christopher Faulete4ab11b2019-06-11 15:05:37 +02001313 struct http_hdr hdrs[global.tune.max_http_hdr];
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001314 struct h1m tlr_h1m;
1315 int ret = 0;
1316
1317 if (!max || !b_data(buf))
1318 goto end;
1319
1320 /* Realing input buffer if necessary */
1321 if (b_peek(buf, *ofs) > b_tail(buf))
1322 b_slow_realign(buf, trash.area, 0);
1323
1324 tlr_h1m.flags = (H1_MF_NO_PHDR|H1_MF_HDRS_ONLY);
1325 ret = h1_headers_to_hdr_list(b_peek(buf, *ofs), b_tail(buf),
1326 hdrs, sizeof(hdrs)/sizeof(hdrs[0]), &tlr_h1m, NULL);
1327 if (ret <= 0) {
1328 /* Incomplete or invalid trailers. If the buffer is full, it's
1329 * an error because traliers are too large to be handled by the
1330 * parser. */
1331 if (ret < 0 || (!ret && !buf_room_for_htx_data(buf)))
1332 goto error;
1333 goto end;
1334 }
1335
1336 /* messages trailers fully parsed. */
1337 if (h1_eval_htx_hdrs_size(hdrs) > max) {
1338 if (htx_is_empty(htx))
1339 goto error;
1340 ret = 0;
1341 goto end;
1342 }
1343
1344 if (!htx_add_all_trailers(htx, hdrs))
1345 goto error;
1346
1347 *ofs += ret;
1348 h1s->flags |= H1S_F_HAVE_I_TLR;
1349 end:
1350 return ret;
1351
1352 error:
1353 h1m->err_state = h1m->state;
1354 h1m->err_pos = h1m->next;
1355 h1s->flags |= (!(h1m->flags & H1_MF_RESP) ? H1S_F_REQ_ERROR : H1S_F_RES_ERROR);
1356 h1s->cs->flags |= CS_FL_EOI;
1357 htx->flags |= HTX_FL_PARSING_ERROR;
1358 h1_capture_bad_message(h1s->h1c, h1s, h1m, buf);
1359 ret = 0;
1360 goto end;
1361}
1362
1363/*
Christopher Faulet129817b2018-09-20 16:14:40 +02001364 * Process incoming data. It parses data and transfer them from h1c->ibuf into
Christopher Faulet539e0292018-11-19 10:40:09 +01001365 * <buf>. It returns the number of bytes parsed and transferred if > 0, or 0 if
1366 * it couldn't proceed.
Christopher Faulet129817b2018-09-20 16:14:40 +02001367 */
Christopher Faulet30db3d72019-05-17 15:35:33 +02001368static size_t h1_process_input(struct h1c *h1c, struct buffer *buf, size_t count)
Christopher Faulet51dbc942018-09-13 09:05:15 +02001369{
Christopher Faulet539e0292018-11-19 10:40:09 +01001370 struct h1s *h1s = h1c->h1s;
Christopher Faulet129817b2018-09-20 16:14:40 +02001371 struct h1m *h1m;
Christopher Faulet9768c262018-10-22 09:34:31 +02001372 struct htx *htx;
Christopher Faulet30db3d72019-05-17 15:35:33 +02001373 size_t ret, data;
Christopher Faulet129817b2018-09-20 16:14:40 +02001374 size_t total = 0;
Christopher Fauletf2824e62018-10-01 12:12:37 +02001375 int errflag;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001376
Christopher Faulet539e0292018-11-19 10:40:09 +01001377 htx = htx_from_buf(buf);
Willy Tarreau3a6190f2018-12-16 08:29:56 +01001378
Christopher Fauletf2824e62018-10-01 12:12:37 +02001379 if (!conn_is_back(h1c->conn)) {
1380 h1m = &h1s->req;
1381 errflag = H1S_F_REQ_ERROR;
1382 }
1383 else {
1384 h1m = &h1s->res;
1385 errflag = H1S_F_RES_ERROR;
1386 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001387
Christopher Faulet74027762019-02-26 14:45:05 +01001388 data = htx->data;
Christopher Fauletd44ad5b2018-11-19 21:52:12 +01001389 do {
Christopher Faulet30db3d72019-05-17 15:35:33 +02001390 size_t used = htx_used_space(htx);
1391
Christopher Faulet129817b2018-09-20 16:14:40 +02001392 if (h1m->state <= H1_MSG_LAST_LF) {
Christopher Faulet539e0292018-11-19 10:40:09 +01001393 ret = h1_process_headers(h1s, h1m, htx, &h1c->ibuf, &total, count);
Christopher Faulet129817b2018-09-20 16:14:40 +02001394 if (!ret)
1395 break;
Christopher Fauletb75b5ea2019-05-17 08:37:28 +02001396 if ((h1m->flags & H1_MF_RESP) &&
1397 h1s->status < 200 && (h1s->status == 100 || h1s->status >= 102)) {
1398 h1m_init_res(&h1s->res);
1399 h1m->flags |= (H1_MF_NO_PHDR|H1_MF_CLEAN_CONN_HDR);
1400 }
Christopher Faulet129817b2018-09-20 16:14:40 +02001401 }
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001402 else if (h1m->state < H1_MSG_TRAILERS) {
Christopher Faulet30db3d72019-05-17 15:35:33 +02001403 ret = h1_process_data(h1s, h1m, htx, &h1c->ibuf, &total, count, buf);
Willy Tarreau78f548f2018-12-05 10:02:39 +01001404 htx = htx_from_buf(buf);
Christopher Faulet129817b2018-09-20 16:14:40 +02001405 if (!ret)
1406 break;
1407 }
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001408 else if (h1m->state == H1_MSG_TRAILERS) {
1409 if (!(h1s->flags & H1S_F_HAVE_I_TLR)) {
1410 ret = h1_process_trailers(h1s, h1m, htx, &h1c->ibuf, &total, count);
1411 if (!ret)
1412 break;
1413 }
1414 if (!h1_process_eom(h1s, h1m, htx, count))
1415 break;
1416 }
Christopher Fauletcb55f482018-12-10 11:56:47 +01001417 else if (h1m->state == H1_MSG_DONE) {
Christopher Faulet2f320ee2019-04-16 20:26:53 +02001418 if (h1s->req.state < H1_MSG_DONE || h1s->res.state < H1_MSG_DONE)
1419 h1c->flags |= H1C_F_IN_BUSY;
Christopher Fauletf2824e62018-10-01 12:12:37 +02001420 break;
Christopher Fauletcb55f482018-12-10 11:56:47 +01001421 }
Christopher Fauletf2824e62018-10-01 12:12:37 +02001422 else if (h1m->state == H1_MSG_TUNNEL) {
Christopher Faulet30db3d72019-05-17 15:35:33 +02001423 ret = h1_process_data(h1s, h1m, htx, &h1c->ibuf, &total, count, buf);
Willy Tarreau78f548f2018-12-05 10:02:39 +01001424 htx = htx_from_buf(buf);
Christopher Faulet9768c262018-10-22 09:34:31 +02001425 if (!ret)
1426 break;
Christopher Fauletf2824e62018-10-01 12:12:37 +02001427 }
Christopher Faulet129817b2018-09-20 16:14:40 +02001428 else {
Christopher Fauletf2824e62018-10-01 12:12:37 +02001429 h1s->flags |= errflag;
Christopher Faulet129817b2018-09-20 16:14:40 +02001430 break;
1431 }
1432
Christopher Faulet30db3d72019-05-17 15:35:33 +02001433 count -= htx_used_space(htx) - used;
Christopher Fauletd44ad5b2018-11-19 21:52:12 +01001434 } while (!(h1s->flags & errflag) && count);
Christopher Faulet129817b2018-09-20 16:14:40 +02001435
Christopher Faulet47365272018-10-31 17:40:50 +01001436 if (h1s->flags & errflag)
1437 goto parsing_err;
Christopher Faulet129817b2018-09-20 16:14:40 +02001438
Christopher Faulet539e0292018-11-19 10:40:09 +01001439 b_del(&h1c->ibuf, total);
1440
1441 end:
Christopher Faulet27ba2dc2018-12-05 11:53:24 +01001442 htx_to_buf(htx, buf);
Christopher Faulet30db3d72019-05-17 15:35:33 +02001443 ret = htx->data - data;
Willy Tarreau45f2b892018-12-05 07:59:27 +01001444 if (h1c->flags & H1C_F_IN_FULL && buf_room_for_htx_data(&h1c->ibuf)) {
Christopher Faulet539e0292018-11-19 10:40:09 +01001445 h1c->flags &= ~H1C_F_IN_FULL;
Willy Tarreau3c39a7d2019-06-14 14:42:29 +02001446 tasklet_wakeup(h1c->wait_event.tasklet);
Christopher Faulet47365272018-10-31 17:40:50 +01001447 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02001448
Christopher Fauletcf56b992018-12-11 16:12:31 +01001449 h1s->cs->flags &= ~(CS_FL_RCV_MORE | CS_FL_WANT_ROOM);
1450
Christopher Fauletcdc90e92019-03-28 13:28:46 +01001451 if (!b_data(&h1c->ibuf))
Christopher Faulet539e0292018-11-19 10:40:09 +01001452 h1_release_buf(h1c, &h1c->ibuf);
Willy Tarreaufbdf90a2019-06-03 13:42:54 +02001453 else if (h1s_data_pending(h1s) && !htx_is_empty(htx))
Christopher Fauletcf56b992018-12-11 16:12:31 +01001454 h1s->cs->flags |= CS_FL_RCV_MORE | CS_FL_WANT_ROOM;
Christopher Faulet539e0292018-11-19 10:40:09 +01001455
Willy Tarreauc493c9c2019-06-03 14:18:22 +02001456 if ((h1s->flags & H1S_F_REOS) && (!h1s_data_pending(h1s) || htx_is_empty(htx))) {
Christopher Fauletf6ce9d62018-12-10 15:30:06 +01001457 h1s->cs->flags |= CS_FL_EOS;
Christopher Faulet26922382019-03-08 15:13:41 +01001458 if (h1m->state > H1_MSG_LAST_LF && h1m->state < H1_MSG_DONE)
Christopher Fauletb8d2ee02019-02-25 15:29:51 +01001459 h1s->cs->flags |= CS_FL_ERROR;
Christopher Faulet539e0292018-11-19 10:40:09 +01001460 }
Christopher Fauletf6ce9d62018-12-10 15:30:06 +01001461
Christopher Faulet30db3d72019-05-17 15:35:33 +02001462 return ret;
Christopher Faulet47365272018-10-31 17:40:50 +01001463
1464 parsing_err:
Christopher Faulet47365272018-10-31 17:40:50 +01001465 b_reset(&h1c->ibuf);
Christopher Faulet27ba2dc2018-12-05 11:53:24 +01001466 htx_to_buf(htx, buf);
Christopher Faulet9768c262018-10-22 09:34:31 +02001467 return 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001468}
1469
Christopher Faulet129817b2018-09-20 16:14:40 +02001470/*
1471 * Process outgoing data. It parses data and transfer them from the channel buffer into
1472 * h1c->obuf. It returns the number of bytes parsed and transferred if > 0, or
1473 * 0 if it couldn't proceed.
1474 */
Christopher Faulet51dbc942018-09-13 09:05:15 +02001475static size_t h1_process_output(struct h1c *h1c, struct buffer *buf, size_t count)
1476{
Christopher Faulet129817b2018-09-20 16:14:40 +02001477 struct h1s *h1s = h1c->h1s;
1478 struct h1m *h1m;
Christopher Faulet9768c262018-10-22 09:34:31 +02001479 struct htx *chn_htx;
1480 struct htx_blk *blk;
1481 struct buffer *tmp;
Christopher Faulet129817b2018-09-20 16:14:40 +02001482 size_t total = 0;
Christopher Fauletf2824e62018-10-01 12:12:37 +02001483 int errflag;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001484
Christopher Faulet47365272018-10-31 17:40:50 +01001485 if (!count)
1486 goto end;
Willy Tarreau37dd54d2018-12-15 14:48:31 +01001487
Christopher Faulet94b2c762019-05-24 15:28:57 +02001488 chn_htx = htxbuf(buf);
Willy Tarreau37dd54d2018-12-15 14:48:31 +01001489 if (htx_is_empty(chn_htx))
1490 goto end;
Christopher Faulet9768c262018-10-22 09:34:31 +02001491
Christopher Faulet51dbc942018-09-13 09:05:15 +02001492 if (!h1_get_buf(h1c, &h1c->obuf)) {
1493 h1c->flags |= H1C_F_OUT_ALLOC;
1494 goto end;
1495 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02001496
Christopher Fauletf2824e62018-10-01 12:12:37 +02001497 if (!conn_is_back(h1c->conn)) {
1498 h1m = &h1s->res;
1499 errflag = H1S_F_RES_ERROR;
1500 }
1501 else {
1502 h1m = &h1s->req;
1503 errflag = H1S_F_REQ_ERROR;
1504 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001505
Willy Tarreau37dd54d2018-12-15 14:48:31 +01001506 /* the htx is non-empty thus has at least one block */
Willy Tarreau3815b222018-12-11 19:50:43 +01001507 blk = htx_get_head_blk(chn_htx);
Christopher Faulet9768c262018-10-22 09:34:31 +02001508
1509 tmp = get_trash_chunk();
Willy Tarreauc5efa332018-12-05 11:19:27 +01001510
Willy Tarreau3815b222018-12-11 19:50:43 +01001511 /* Perform some optimizations to reduce the number of buffer copies.
1512 * First, if the mux's buffer is empty and the htx area contains
1513 * exactly one data block of the same size as the requested count,
1514 * then it's possible to simply swap the caller's buffer with the
1515 * mux's output buffer and adjust offsets and length to match the
1516 * entire DATA HTX block in the middle. In this case we perform a
1517 * true zero-copy operation from end-to-end. This is the situation
1518 * that happens all the time with large files. Second, if this is not
1519 * possible, but the mux's output buffer is empty, we still have an
1520 * opportunity to avoid the copy to the intermediary buffer, by making
1521 * the intermediary buffer's area point to the output buffer's area.
1522 * In this case we want to skip the HTX header to make sure that copies
1523 * remain aligned and that this operation remains possible all the
1524 * time. This goes for headers, data blocks and any data extracted from
1525 * the HTX blocks.
Willy Tarreauc5efa332018-12-05 11:19:27 +01001526 */
1527 if (!b_data(&h1c->obuf)) {
Olivier Houchard84cca662018-12-14 16:28:08 +01001528 h1c->obuf.head = sizeof(struct htx) + blk->addr;
Willy Tarreau3815b222018-12-11 19:50:43 +01001529
1530 if (chn_htx->used == 1 &&
Willy Tarreau37dd54d2018-12-15 14:48:31 +01001531 htx_get_blk_type(blk) == HTX_BLK_DATA &&
Willy Tarreau3815b222018-12-11 19:50:43 +01001532 htx_get_blk_value(chn_htx, blk).len == count) {
1533 void *old_area = h1c->obuf.area;
1534
1535 h1c->obuf.area = buf->area;
1536 h1c->obuf.data = count;
1537
1538 buf->area = old_area;
1539 buf->data = buf->head = 0;
Christopher Fauletadb22202018-12-12 10:32:09 +01001540
1541 /* The message is chunked. We need to emit the chunk
1542 * size. We have at least the size of the struct htx to
1543 * write the chunk envelope. It should be enough.
1544 */
1545 if (h1m->flags & H1_MF_CHNK) {
1546 h1_emit_chunk_size(&h1c->obuf, count);
1547 h1_emit_chunk_crlf(&h1c->obuf);
1548 }
1549
Willy Tarreau3815b222018-12-11 19:50:43 +01001550 total += count;
1551 goto out;
1552 }
Willy Tarreauc5efa332018-12-05 11:19:27 +01001553 tmp->area = h1c->obuf.area + h1c->obuf.head;
1554 }
1555
Christopher Faulet9768c262018-10-22 09:34:31 +02001556 tmp->size = b_room(&h1c->obuf);
1557
Christopher Fauletb2e84162018-12-06 11:39:49 +01001558 while (count && !(h1s->flags & errflag) && blk) {
Christopher Faulet570d1612018-11-26 11:13:57 +01001559 struct htx_sl *sl;
Christopher Faulet9768c262018-10-22 09:34:31 +02001560 struct ist n, v;
Christopher Fauletb2e84162018-12-06 11:39:49 +01001561 enum htx_blk_type type = htx_get_blk_type(blk);
Christopher Faulet9768c262018-10-22 09:34:31 +02001562 uint32_t sz = htx_get_blksz(blk);
Christopher Fauletb2e84162018-12-06 11:39:49 +01001563 uint32_t vlen;
Christopher Faulet9768c262018-10-22 09:34:31 +02001564
Christopher Fauletb2e84162018-12-06 11:39:49 +01001565 vlen = sz;
1566 if (vlen > count) {
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001567 if (type != HTX_BLK_DATA)
Christopher Fauletb2e84162018-12-06 11:39:49 +01001568 goto copy;
1569 vlen = count;
1570 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001571
Christopher Faulet94b2c762019-05-24 15:28:57 +02001572 if (type == HTX_BLK_UNUSED)
1573 goto nextblk;
Christopher Faulet9768c262018-10-22 09:34:31 +02001574
Christopher Faulet94b2c762019-05-24 15:28:57 +02001575 switch (h1m->state) {
1576 case H1_MSG_RQBEFORE:
1577 if (type != HTX_BLK_REQ_SL)
1578 goto error;
Christopher Faulet9768c262018-10-22 09:34:31 +02001579 sl = htx_get_blk_ptr(chn_htx, blk);
Christopher Faulet570d1612018-11-26 11:13:57 +01001580 h1s->meth = sl->info.req.meth;
Christopher Faulet9768c262018-10-22 09:34:31 +02001581 h1_parse_req_vsn(h1m, sl);
Christopher Fauletc59ff232018-12-03 13:58:44 +01001582 if (!htx_reqline_to_h1(sl, tmp))
Christopher Faulet9768c262018-10-22 09:34:31 +02001583 goto copy;
1584 h1m->flags |= H1_MF_XFER_LEN;
Christopher Faulet1f890dd2019-02-18 10:33:16 +01001585 if (sl->flags & HTX_SL_F_BODYLESS)
1586 h1m->flags |= H1_MF_CLEN;
Christopher Faulet9768c262018-10-22 09:34:31 +02001587 h1m->state = H1_MSG_HDR_FIRST;
Christopher Faulet129817b2018-09-20 16:14:40 +02001588 break;
Christopher Faulet129817b2018-09-20 16:14:40 +02001589
Christopher Faulet94b2c762019-05-24 15:28:57 +02001590 case H1_MSG_RPBEFORE:
1591 if (type != HTX_BLK_RES_SL)
1592 goto error;
Christopher Faulet9768c262018-10-22 09:34:31 +02001593 sl = htx_get_blk_ptr(chn_htx, blk);
Christopher Faulet570d1612018-11-26 11:13:57 +01001594 h1s->status = sl->info.res.status;
Christopher Faulet9768c262018-10-22 09:34:31 +02001595 h1_parse_res_vsn(h1m, sl);
Christopher Fauletc59ff232018-12-03 13:58:44 +01001596 if (!htx_stline_to_h1(sl, tmp))
Christopher Faulet9768c262018-10-22 09:34:31 +02001597 goto copy;
Christopher Faulet03599112018-11-27 11:21:21 +01001598 if (sl->flags & HTX_SL_F_XFER_LEN)
Christopher Faulet9768c262018-10-22 09:34:31 +02001599 h1m->flags |= H1_MF_XFER_LEN;
Christopher Fauletd1ebb1e2018-11-28 16:32:50 +01001600 if (sl->info.res.status < 200 &&
1601 (sl->info.res.status == 100 || sl->info.res.status >= 102))
Christopher Fauletada34b62019-05-24 16:36:43 +02001602 h1s->flags |= H1S_F_HAVE_O_CONN;
Christopher Faulet9768c262018-10-22 09:34:31 +02001603 h1m->state = H1_MSG_HDR_FIRST;
1604 break;
1605
Christopher Faulet94b2c762019-05-24 15:28:57 +02001606 case H1_MSG_HDR_FIRST:
1607 case H1_MSG_HDR_NAME:
1608 case H1_MSG_HDR_L2_LWS:
1609 if (type == HTX_BLK_EOH)
1610 goto last_lf;
1611 if (type != HTX_BLK_HDR)
1612 goto error;
Christopher Faulet9768c262018-10-22 09:34:31 +02001613 h1m->state = H1_MSG_HDR_NAME;
1614 n = htx_get_blk_name(chn_htx, blk);
1615 v = htx_get_blk_value(chn_htx, blk);
1616
1617 if (isteqi(n, ist("transfer-encoding")))
1618 h1_parse_xfer_enc_header(h1m, v);
Willy Tarreau27cd2232019-01-03 21:52:42 +01001619 else if (isteqi(n, ist("content-length"))) {
Christopher Faulet5220ef22019-03-27 15:44:56 +01001620 /* Only skip C-L header with invalid value. */
1621 if (h1_parse_cont_len_header(h1m, &v) < 0)
Willy Tarreau27cd2232019-01-03 21:52:42 +01001622 goto skip_hdr;
1623 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001624 else if (isteqi(n, ist("connection"))) {
Christopher Fauletb992af02019-03-28 15:42:24 +01001625 h1_parse_connection_header(h1m, &v);
Christopher Faulet9768c262018-10-22 09:34:31 +02001626 if (!v.len)
1627 goto skip_hdr;
1628 }
1629
Christopher Fauletc59ff232018-12-03 13:58:44 +01001630 if (!htx_hdr_to_h1(n, v, tmp))
Christopher Faulet9768c262018-10-22 09:34:31 +02001631 goto copy;
1632 skip_hdr:
1633 h1m->state = H1_MSG_HDR_L2_LWS;
1634 break;
1635
Christopher Faulet94b2c762019-05-24 15:28:57 +02001636 case H1_MSG_LAST_LF:
1637 if (type != HTX_BLK_EOH)
1638 goto error;
1639 last_lf:
Christopher Fauletada34b62019-05-24 16:36:43 +02001640 h1m->state = H1_MSG_LAST_LF;
1641 if (!(h1s->flags & H1S_F_HAVE_O_CONN)) {
Christopher Fauletd1ebb1e2018-11-28 16:32:50 +01001642 /* There is no "Connection:" header and
1643 * it the conn_mode must be
1644 * processed. So do it */
Christopher Fauleta110ecb2019-06-17 14:07:46 +02001645 n = ist("connection");
Christopher Fauletd1ebb1e2018-11-28 16:32:50 +01001646 v = ist("");
Christopher Fauletb992af02019-03-28 15:42:24 +01001647 h1_process_output_conn_mode(h1s, h1m, &v);
Christopher Fauletd1ebb1e2018-11-28 16:32:50 +01001648 if (v.len) {
Christopher Fauletc59ff232018-12-03 13:58:44 +01001649 if (!htx_hdr_to_h1(n, v, tmp))
Christopher Fauletd1ebb1e2018-11-28 16:32:50 +01001650 goto copy;
1651 }
Christopher Fauletada34b62019-05-24 16:36:43 +02001652 h1s->flags |= H1S_F_HAVE_O_CONN;
Christopher Fauletd1ebb1e2018-11-28 16:32:50 +01001653 }
Willy Tarreau4710d202019-01-03 17:39:54 +01001654
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001655 if ((h1s->meth != HTTP_METH_CONNECT &&
1656 (h1m->flags & (H1_MF_VER_11|H1_MF_RESP|H1_MF_CLEN|H1_MF_CHNK|H1_MF_XFER_LEN)) ==
Christopher Faulet1f890dd2019-02-18 10:33:16 +01001657 (H1_MF_VER_11|H1_MF_XFER_LEN)) ||
1658 (h1s->status >= 200 && h1s->status != 204 && h1s->status != 304 &&
1659 h1s->meth != HTTP_METH_HEAD && !(h1s->meth == HTTP_METH_CONNECT && h1s->status == 200) &&
1660 (h1m->flags & (H1_MF_VER_11|H1_MF_RESP|H1_MF_CLEN|H1_MF_CHNK|H1_MF_XFER_LEN)) ==
1661 (H1_MF_VER_11|H1_MF_RESP|H1_MF_XFER_LEN))) {
Willy Tarreau4710d202019-01-03 17:39:54 +01001662 /* chunking needed but header not seen */
1663 if (!chunk_memcat(tmp, "transfer-encoding: chunked\r\n", 28))
1664 goto copy;
1665 h1m->flags |= H1_MF_CHNK;
1666 }
1667
Christopher Faulet9768c262018-10-22 09:34:31 +02001668 if (!chunk_memcat(tmp, "\r\n", 2))
1669 goto copy;
1670
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001671 if (!(h1m->flags & H1_MF_RESP) && h1s->meth == HTTP_METH_CONNECT) {
1672 /* a CONNECT request is sent to the server. Switch it to tunnel mode. */
1673 h1_set_req_tunnel_mode(h1s);
1674 }
1675 else if ((h1s->meth == HTTP_METH_CONNECT && h1s->status == 200) || h1s->status == 101) {
1676 /* a successfull reply to a CONNECT or a protocol switching is sent
1677 * to the client . Switch the response to tunnel mode. */
1678 h1_set_res_tunnel_mode(h1s);
1679 }
Christopher Fauletb75b5ea2019-05-17 08:37:28 +02001680 else if ((h1m->flags & H1_MF_RESP) &&
1681 h1s->status < 200 && (h1s->status == 100 || h1s->status >= 102)) {
1682 h1m_init_res(&h1s->res);
1683 h1m->flags |= (H1_MF_NO_PHDR|H1_MF_CLEAN_CONN_HDR);
Christopher Fauletada34b62019-05-24 16:36:43 +02001684 h1s->flags &= ~H1S_F_HAVE_O_CONN;
Christopher Fauletb75b5ea2019-05-17 08:37:28 +02001685 }
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001686 else
1687 h1m->state = H1_MSG_DATA;
Christopher Faulet9768c262018-10-22 09:34:31 +02001688 break;
1689
Christopher Faulet94b2c762019-05-24 15:28:57 +02001690 case H1_MSG_DATA:
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001691 if (type == HTX_BLK_EOM) {
1692 /* Chunked message without explicit trailers */
1693 if (h1m->flags & H1_MF_CHNK) {
1694 if (!chunk_memcat(tmp, "0\r\n\r\n", 5))
1695 goto copy;
1696 }
1697 goto done;
1698 }
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001699 else if (type == HTX_BLK_EOT || type == HTX_BLK_TLR) {
Christopher Faulet94b2c762019-05-24 15:28:57 +02001700 if (!chunk_memcat(tmp, "0\r\n", 3))
1701 goto copy;
Christopher Faulet94b2c762019-05-24 15:28:57 +02001702 goto trailers;
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001703 }
Christopher Faulet94b2c762019-05-24 15:28:57 +02001704 else if (type != HTX_BLK_DATA)
1705 goto error;
Christopher Faulet9768c262018-10-22 09:34:31 +02001706 v = htx_get_blk_value(chn_htx, blk);
Christopher Fauletb2e84162018-12-06 11:39:49 +01001707 v.len = vlen;
Christopher Fauletc59ff232018-12-03 13:58:44 +01001708 if (!htx_data_to_h1(v, tmp, !!(h1m->flags & H1_MF_CHNK)))
Christopher Faulet9768c262018-10-22 09:34:31 +02001709 goto copy;
1710 break;
1711
Christopher Faulet94b2c762019-05-24 15:28:57 +02001712 case H1_MSG_TRAILERS:
1713 if (type == HTX_BLK_EOM)
1714 goto done;
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001715 else if (type != HTX_BLK_TLR && type != HTX_BLK_EOT)
Christopher Faulet94b2c762019-05-24 15:28:57 +02001716 goto error;
1717 trailers:
Christopher Faulet9768c262018-10-22 09:34:31 +02001718 h1m->state = H1_MSG_TRAILERS;
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001719 if (type == HTX_BLK_EOT) {
1720 if (!chunk_memcat(tmp, "\r\n", 2))
Christopher Faulet32188212018-11-20 18:21:43 +01001721 goto copy;
Christopher Faulet32188212018-11-20 18:21:43 +01001722 }
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001723 else { // HTX_BLK_TLR
1724 n = htx_get_blk_name(chn_htx, blk);
1725 v = htx_get_blk_value(chn_htx, blk);
1726 if (!htx_hdr_to_h1(n, v, tmp))
1727 goto copy;
1728 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001729 break;
1730
Christopher Faulet94b2c762019-05-24 15:28:57 +02001731 case H1_MSG_DONE:
1732 if (type != HTX_BLK_EOM)
1733 goto error;
1734 done:
1735 h1m->state = H1_MSG_DONE;
Christopher Fauletcd67bff2019-06-14 16:54:15 +02001736 if (h1s->h1c->flags & H1C_F_IN_BUSY) {
1737 h1s->h1c->flags &= ~H1C_F_IN_BUSY;
1738 tasklet_wakeup(h1s->h1c->wait_event.tasklet);
1739 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001740 break;
1741
Christopher Faulet9768c262018-10-22 09:34:31 +02001742 default:
Christopher Faulet94b2c762019-05-24 15:28:57 +02001743 error:
Christopher Fauleta2ea1582019-05-28 10:35:18 +02001744 h1s->flags |= errflag;
Christopher Faulet9768c262018-10-22 09:34:31 +02001745 break;
1746 }
Christopher Faulet94b2c762019-05-24 15:28:57 +02001747
1748 nextblk:
Christopher Fauletb2e84162018-12-06 11:39:49 +01001749 total += vlen;
1750 count -= vlen;
1751 if (sz == vlen)
1752 blk = htx_remove_blk(chn_htx, blk);
1753 else {
1754 htx_cut_data_blk(chn_htx, blk, vlen);
1755 break;
1756 }
Christopher Faulet129817b2018-09-20 16:14:40 +02001757 }
1758
Christopher Faulet9768c262018-10-22 09:34:31 +02001759 copy:
Willy Tarreauc5efa332018-12-05 11:19:27 +01001760 /* when the output buffer is empty, tmp shares the same area so that we
1761 * only have to update pointers and lengths.
1762 */
Willy Tarreaub57af612019-01-23 20:43:53 +01001763 if (tmp->area == h1c->obuf.area + h1c->obuf.head)
Willy Tarreauc5efa332018-12-05 11:19:27 +01001764 h1c->obuf.data = tmp->data;
1765 else
1766 b_putblk(&h1c->obuf, tmp->area, tmp->data);
Christopher Faulet51dbc942018-09-13 09:05:15 +02001767
Willy Tarreau3815b222018-12-11 19:50:43 +01001768 htx_to_buf(chn_htx, buf);
1769 out:
Willy Tarreau45f2b892018-12-05 07:59:27 +01001770 if (!buf_room_for_htx_data(&h1c->obuf))
Christopher Faulet51dbc942018-09-13 09:05:15 +02001771 h1c->flags |= H1C_F_OUT_FULL;
Christopher Faulet9768c262018-10-22 09:34:31 +02001772 end:
1773 return total;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001774}
1775
Christopher Faulet51dbc942018-09-13 09:05:15 +02001776/*********************************************************/
1777/* functions below are I/O callbacks from the connection */
1778/*********************************************************/
Christopher Faulete17fa2f2018-12-11 16:25:36 +01001779static void h1_wake_stream_for_recv(struct h1s *h1s)
1780{
1781 if (h1s && h1s->recv_wait) {
Willy Tarreau4f6516d2018-12-19 13:59:17 +01001782 h1s->recv_wait->events &= ~SUB_RETRY_RECV;
Willy Tarreau3c39a7d2019-06-14 14:42:29 +02001783 tasklet_wakeup(h1s->recv_wait->tasklet);
Christopher Faulete17fa2f2018-12-11 16:25:36 +01001784 h1s->recv_wait = NULL;
1785 }
1786}
1787static void h1_wake_stream_for_send(struct h1s *h1s)
1788{
1789 if (h1s && h1s->send_wait) {
Willy Tarreau4f6516d2018-12-19 13:59:17 +01001790 h1s->send_wait->events &= ~SUB_RETRY_SEND;
Willy Tarreau3c39a7d2019-06-14 14:42:29 +02001791 tasklet_wakeup(h1s->send_wait->tasklet);
Christopher Faulete17fa2f2018-12-11 16:25:36 +01001792 h1s->send_wait = NULL;
1793 }
1794}
1795
Christopher Faulet51dbc942018-09-13 09:05:15 +02001796/*
1797 * Attempt to read data, and subscribe if none available
1798 */
1799static int h1_recv(struct h1c *h1c)
1800{
1801 struct connection *conn = h1c->conn;
Christopher Fauletfeb11742018-11-29 15:12:34 +01001802 struct h1s *h1s = h1c->h1s;
Olivier Houchard75159a92018-12-03 18:46:09 +01001803 size_t ret = 0, max;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001804 int rcvd = 0;
1805
Willy Tarreau4f6516d2018-12-19 13:59:17 +01001806 if (h1c->wait_event.events & SUB_RETRY_RECV)
Christopher Fauletc386a882018-12-04 16:06:28 +01001807 return (b_data(&h1c->ibuf));
Christopher Faulet51dbc942018-09-13 09:05:15 +02001808
Olivier Houchard92d093d2019-06-11 16:36:33 +02001809 if (!(conn->flags & CO_FL_ERROR) && h1c->flags & H1C_F_CS_WAIT_CONN) {
Willy Tarreaud58f27f2019-06-03 10:12:22 +02001810 conn->xprt->subscribe(conn, conn->xprt_ctx, SUB_RETRY_RECV, &h1c->wait_event);
1811 return 0;
1812 }
1813
Olivier Houchard75159a92018-12-03 18:46:09 +01001814 if (!h1_recv_allowed(h1c)) {
1815 rcvd = 1;
Christopher Faulet9768c262018-10-22 09:34:31 +02001816 goto end;
Olivier Houchard75159a92018-12-03 18:46:09 +01001817 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02001818
Christopher Fauletf7d5ff32019-04-16 13:55:08 +02001819 if (!h1_get_buf(h1c, &h1c->ibuf)) {
1820 h1c->flags |= H1C_F_IN_ALLOC;
Christopher Faulet9768c262018-10-22 09:34:31 +02001821 goto end;
1822 }
Christopher Faulet1be55f92018-10-02 15:59:23 +02001823
Christopher Fauletf7d5ff32019-04-16 13:55:08 +02001824 if (h1s && (h1s->flags & (H1S_F_BUF_FLUSH|H1S_F_SPLICED_DATA))) {
Willy Tarreaufbdf90a2019-06-03 13:42:54 +02001825 if (!h1s_data_pending(h1s))
Christopher Fauletf7d5ff32019-04-16 13:55:08 +02001826 h1_wake_stream_for_recv(h1s);
1827 rcvd = 1;
Christopher Faulet9768c262018-10-22 09:34:31 +02001828 goto end;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001829 }
1830
Olivier Houchard29a22bc2018-12-04 18:16:45 +01001831 /*
1832 * If we only have a small amount of data, realign it,
1833 * it's probably cheaper than doing 2 recv() calls.
1834 */
1835 if (b_data(&h1c->ibuf) > 0 && b_data(&h1c->ibuf) < 128)
1836 b_slow_realign(&h1c->ibuf, trash.area, 0);
1837
Willy Tarreau45f2b892018-12-05 07:59:27 +01001838 max = buf_room_for_htx_data(&h1c->ibuf);
Christopher Faulet51dbc942018-09-13 09:05:15 +02001839 if (max) {
1840 h1c->flags &= ~H1C_F_IN_FULL;
Willy Tarreau78f548f2018-12-05 10:02:39 +01001841
Willy Tarreaue0f24ee2018-12-14 10:51:23 +01001842 b_realign_if_empty(&h1c->ibuf);
Willy Tarreau78f548f2018-12-05 10:02:39 +01001843 if (!b_data(&h1c->ibuf)) {
1844 /* try to pre-align the buffer like the rxbufs will be
1845 * to optimize memory copies.
1846 */
Willy Tarreau78f548f2018-12-05 10:02:39 +01001847 h1c->ibuf.head = sizeof(struct htx);
1848 }
Olivier Houcharde179d0e2019-03-21 18:27:17 +01001849 ret = conn->xprt->rcv_buf(conn, conn->xprt_ctx, &h1c->ibuf, max, 0);
Christopher Faulet51dbc942018-09-13 09:05:15 +02001850 }
Christopher Faulet47365272018-10-31 17:40:50 +01001851 if (ret > 0) {
Christopher Faulet51dbc942018-09-13 09:05:15 +02001852 rcvd = 1;
Christopher Fauletfeb11742018-11-29 15:12:34 +01001853 if (h1s && h1s->cs) {
Christopher Faulet37e36072018-12-04 15:54:12 +01001854 h1s->cs->flags |= (CS_FL_READ_PARTIAL|CS_FL_RCV_MORE);
Christopher Fauletfeb11742018-11-29 15:12:34 +01001855 if (h1s->csinfo.t_idle == -1)
1856 h1s->csinfo.t_idle = tv_ms_elapsed(&h1s->csinfo.tv_create, &now) - h1s->csinfo.t_handshake;
1857 }
Christopher Faulet47365272018-10-31 17:40:50 +01001858 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02001859
Christopher Fauletcf56b992018-12-11 16:12:31 +01001860 if (!h1_recv_allowed(h1c) || !buf_room_for_htx_data(&h1c->ibuf)) {
Christopher Faulet81d48432018-11-19 21:22:43 +01001861 rcvd = 1;
Christopher Fauletcf56b992018-12-11 16:12:31 +01001862 goto end;
1863 }
1864
Olivier Houcharde179d0e2019-03-21 18:27:17 +01001865 conn->xprt->subscribe(conn, conn->xprt_ctx, SUB_RETRY_RECV, &h1c->wait_event);
Christopher Faulet51dbc942018-09-13 09:05:15 +02001866
Christopher Faulet9768c262018-10-22 09:34:31 +02001867 end:
Christopher Faulete17fa2f2018-12-11 16:25:36 +01001868 if (ret > 0 || (conn->flags & CO_FL_ERROR) || conn_xprt_read0_pending(conn))
1869 h1_wake_stream_for_recv(h1s);
Olivier Houchard75159a92018-12-03 18:46:09 +01001870
Willy Tarreauc493c9c2019-06-03 14:18:22 +02001871 if (conn_xprt_read0_pending(conn) && h1s) {
1872 h1s->flags |= H1S_F_REOS;
Willy Tarreaufbdf90a2019-06-03 13:42:54 +02001873 rcvd = 1;
1874 }
1875
Christopher Faulet51dbc942018-09-13 09:05:15 +02001876 if (!b_data(&h1c->ibuf))
1877 h1_release_buf(h1c, &h1c->ibuf);
Willy Tarreau45f2b892018-12-05 07:59:27 +01001878 else if (!buf_room_for_htx_data(&h1c->ibuf))
Christopher Faulet51dbc942018-09-13 09:05:15 +02001879 h1c->flags |= H1C_F_IN_FULL;
1880 return rcvd;
1881}
1882
1883
1884/*
1885 * Try to send data if possible
1886 */
1887static int h1_send(struct h1c *h1c)
1888{
1889 struct connection *conn = h1c->conn;
1890 unsigned int flags = 0;
1891 size_t ret;
1892 int sent = 0;
1893
1894 if (conn->flags & CO_FL_ERROR)
1895 return 0;
1896
Christopher Faulet3b88b8d2018-10-26 17:36:03 +02001897 if (h1c->flags & H1C_F_CS_WAIT_CONN) {
Willy Tarreau4f6516d2018-12-19 13:59:17 +01001898 if (!(h1c->wait_event.events & SUB_RETRY_SEND))
Olivier Houcharde179d0e2019-03-21 18:27:17 +01001899 conn->xprt->subscribe(conn, conn->xprt_ctx, SUB_RETRY_SEND, &h1c->wait_event);
Christopher Faulet3b88b8d2018-10-26 17:36:03 +02001900 return 0;
1901 }
1902
Christopher Faulet51dbc942018-09-13 09:05:15 +02001903 if (!b_data(&h1c->obuf))
1904 goto end;
1905
1906 if (h1c->flags & H1C_F_OUT_FULL)
1907 flags |= CO_SFL_MSG_MORE;
1908
Olivier Houcharde179d0e2019-03-21 18:27:17 +01001909 ret = conn->xprt->snd_buf(conn, conn->xprt_ctx, &h1c->obuf, b_data(&h1c->obuf), flags);
Christopher Faulet51dbc942018-09-13 09:05:15 +02001910 if (ret > 0) {
1911 h1c->flags &= ~H1C_F_OUT_FULL;
1912 b_del(&h1c->obuf, ret);
1913 sent = 1;
1914 }
1915
Christopher Faulet145aa472018-12-06 10:56:20 +01001916 if (conn->flags & (CO_FL_ERROR|CO_FL_SOCK_WR_SH)) {
1917 /* error or output closed, nothing to send, clear the buffer to release it */
1918 b_reset(&h1c->obuf);
1919 }
1920
Christopher Faulet51dbc942018-09-13 09:05:15 +02001921 end:
Christopher Faulete17fa2f2018-12-11 16:25:36 +01001922 if (!(h1c->flags & H1C_F_OUT_FULL))
1923 h1_wake_stream_for_send(h1c->h1s);
Olivier Houchard75159a92018-12-03 18:46:09 +01001924
Christopher Faulet51dbc942018-09-13 09:05:15 +02001925 /* We're done, no more to send */
1926 if (!b_data(&h1c->obuf)) {
1927 h1_release_buf(h1c, &h1c->obuf);
1928 if (h1c->flags & H1C_F_CS_SHUTW_NOW)
Christopher Faulet666a0c42019-01-08 11:12:04 +01001929 h1_shutw_conn(conn, CS_SHW_NORMAL);
Christopher Faulet51dbc942018-09-13 09:05:15 +02001930 }
Willy Tarreau4f6516d2018-12-19 13:59:17 +01001931 else if (!(h1c->wait_event.events & SUB_RETRY_SEND))
Olivier Houcharde179d0e2019-03-21 18:27:17 +01001932 conn->xprt->subscribe(conn, conn->xprt_ctx, SUB_RETRY_SEND, &h1c->wait_event);
Christopher Faulet51dbc942018-09-13 09:05:15 +02001933
1934 return sent;
1935}
1936
Christopher Faulet51dbc942018-09-13 09:05:15 +02001937
1938/* callback called on any event by the connection handler.
1939 * It applies changes and returns zero, or < 0 if it wants immediate
1940 * destruction of the connection.
1941 */
1942static int h1_process(struct h1c * h1c)
1943{
1944 struct connection *conn = h1c->conn;
Christopher Fauletfeb11742018-11-29 15:12:34 +01001945 struct h1s *h1s = h1c->h1s;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001946
Willy Tarreau3d2ee552018-12-19 14:12:10 +01001947 if (!conn->ctx)
Christopher Faulet51dbc942018-09-13 09:05:15 +02001948 return -1;
1949
Christopher Faulet3b88b8d2018-10-26 17:36:03 +02001950 if (h1c->flags & H1C_F_CS_WAIT_CONN) {
Olivier Houchard690e0f02019-06-11 16:37:24 +02001951 if (!(conn->flags & (CO_FL_CONNECTED|CO_FL_ERROR)) ||
Olivier Houchard60630032019-06-13 17:37:00 +02001952 (!(conn->flags & CO_FL_ERROR) && (conn->flags & CO_FL_HANDSHAKE)))
Christopher Faulet539e0292018-11-19 10:40:09 +01001953 goto end;
1954 h1c->flags &= ~H1C_F_CS_WAIT_CONN;
Christopher Fauleta0883e62018-12-11 16:26:50 +01001955 h1_wake_stream_for_send(h1s);
Christopher Faulet3b88b8d2018-10-26 17:36:03 +02001956 }
1957
Christopher Fauletfeb11742018-11-29 15:12:34 +01001958 if (!h1s) {
Christopher Faulet539e0292018-11-19 10:40:09 +01001959 if (h1c->flags & H1C_F_CS_ERROR ||
Olivier Houchard32d75ed2019-01-14 17:27:23 +01001960 conn->flags & (CO_FL_ERROR | CO_FL_SOCK_WR_SH) ||
Christopher Faulet539e0292018-11-19 10:40:09 +01001961 conn_xprt_read0_pending(conn))
1962 goto release;
Christopher Faulet666a0c42019-01-08 11:12:04 +01001963 if (!conn_is_back(conn) && !(h1c->flags & (H1C_F_CS_SHUTW_NOW|H1C_F_CS_SHUTDOWN))) {
Olivier Houchardf502aca2018-12-14 19:42:40 +01001964 if (!h1s_create(h1c, NULL, NULL))
Christopher Faulet539e0292018-11-19 10:40:09 +01001965 goto release;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001966 }
Christopher Faulet1a7ad7a2018-12-04 16:10:44 +01001967 else
Olivier Houcharde7284782018-12-06 18:54:54 +01001968 goto end;
Christopher Fauletfeb11742018-11-29 15:12:34 +01001969 h1s = h1c->h1s;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001970 }
1971
Christopher Fauletfeb11742018-11-29 15:12:34 +01001972 if (b_data(&h1c->ibuf) && h1s->csinfo.t_idle == -1)
1973 h1s->csinfo.t_idle = tv_ms_elapsed(&h1s->csinfo.tv_create, &now) - h1s->csinfo.t_handshake;
1974
Willy Tarreauc493c9c2019-06-03 14:18:22 +02001975 if (conn_xprt_read0_pending(conn))
1976 h1s->flags |= H1S_F_REOS;
1977
Willy Tarreaufbdf90a2019-06-03 13:42:54 +02001978 if (!h1s_data_pending(h1s) && h1s && h1s->cs && h1s->cs->data_cb->wake &&
Willy Tarreauc493c9c2019-06-03 14:18:22 +02001979 (h1s->flags & H1S_F_REOS || h1c->flags & H1C_F_CS_ERROR ||
Olivier Houchard32d75ed2019-01-14 17:27:23 +01001980 conn->flags & (CO_FL_ERROR | CO_FL_SOCK_WR_SH))) {
Olivier Houchard75159a92018-12-03 18:46:09 +01001981 if (h1c->flags & H1C_F_CS_ERROR || conn->flags & CO_FL_ERROR)
Willy Tarreauc493c9c2019-06-03 14:18:22 +02001982 h1s->cs->flags |= CS_FL_ERROR;
Olivier Houchard75159a92018-12-03 18:46:09 +01001983 h1s->cs->data_cb->wake(h1s->cs);
1984 }
Christopher Faulet47365272018-10-31 17:40:50 +01001985 end:
Christopher Fauletb8093cf2019-01-03 16:27:28 +01001986 if (h1c->task) {
1987 h1c->task->expire = TICK_ETERNITY;
1988 if (b_data(&h1c->obuf)) {
Christopher Faulet666a0c42019-01-08 11:12:04 +01001989 h1c->task->expire = tick_add(now_ms, ((h1c->flags & (H1C_F_CS_SHUTW_NOW|H1C_F_CS_SHUTDOWN))
Christopher Fauletb8093cf2019-01-03 16:27:28 +01001990 ? h1c->shut_timeout
1991 : h1c->timeout));
1992 task_queue(h1c->task);
1993 }
1994 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02001995 return 0;
Christopher Faulet539e0292018-11-19 10:40:09 +01001996
1997 release:
Christopher Faulet73c12072019-04-08 11:23:22 +02001998 h1_release(h1c);
Christopher Faulet539e0292018-11-19 10:40:09 +01001999 return -1;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002000}
2001
2002static struct task *h1_io_cb(struct task *t, void *ctx, unsigned short status)
2003{
2004 struct h1c *h1c = ctx;
2005 int ret = 0;
2006
Willy Tarreau4f6516d2018-12-19 13:59:17 +01002007 if (!(h1c->wait_event.events & SUB_RETRY_SEND))
Christopher Faulet51dbc942018-09-13 09:05:15 +02002008 ret = h1_send(h1c);
Willy Tarreau4f6516d2018-12-19 13:59:17 +01002009 if (!(h1c->wait_event.events & SUB_RETRY_RECV))
Christopher Faulet51dbc942018-09-13 09:05:15 +02002010 ret |= h1_recv(h1c);
Christopher Faulet81d48432018-11-19 21:22:43 +01002011 if (ret || !h1c->h1s)
Christopher Faulet51dbc942018-09-13 09:05:15 +02002012 h1_process(h1c);
2013 return NULL;
2014}
2015
Olivier Houchard9a86fcb2018-12-11 16:47:14 +01002016static void h1_reset(struct connection *conn)
2017{
Willy Tarreau3d2ee552018-12-19 14:12:10 +01002018 struct h1c *h1c = conn->ctx;
Olivier Houchard9a86fcb2018-12-11 16:47:14 +01002019
2020 /* Reset the flags, and let the mux know we're waiting for a connection */
2021 h1c->flags = H1C_F_CS_WAIT_CONN;
2022}
Christopher Faulet51dbc942018-09-13 09:05:15 +02002023
2024static int h1_wake(struct connection *conn)
2025{
Willy Tarreau3d2ee552018-12-19 14:12:10 +01002026 struct h1c *h1c = conn->ctx;
Olivier Houchard75159a92018-12-03 18:46:09 +01002027 int ret;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002028
Christopher Faulet539e0292018-11-19 10:40:09 +01002029 h1_send(h1c);
Olivier Houchard75159a92018-12-03 18:46:09 +01002030 ret = h1_process(h1c);
2031 if (ret == 0) {
2032 struct h1s *h1s = h1c->h1s;
2033
2034 if (h1s && h1s->cs && h1s->cs->data_cb->wake)
2035 ret = h1s->cs->data_cb->wake(h1s->cs);
2036 }
2037 return ret;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002038}
2039
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002040/* Connection timeout management. The principle is that if there's no receipt
2041 * nor sending for a certain amount of time, the connection is closed.
2042 */
2043static struct task *h1_timeout_task(struct task *t, void *context, unsigned short state)
2044{
2045 struct h1c *h1c = context;
2046 int expired = tick_is_expired(t->expire, now_ms);
2047
2048 if (!expired && h1c)
2049 return t;
2050
Olivier Houchard3f795f72019-04-17 22:51:06 +02002051 task_destroy(t);
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002052
2053 if (!h1c) {
2054 /* resources were already deleted */
2055 return NULL;
2056 }
2057
2058 h1c->task = NULL;
2059 /* If a stream is still attached to the mux, just set an error and wait
2060 * for the stream's timeout. Otherwise, release the mux. This is only ok
2061 * because same timeouts are used.
2062 */
2063 if (h1c->h1s && h1c->h1s->cs)
2064 h1c->flags |= H1C_F_CS_ERROR;
2065 else
Christopher Faulet73c12072019-04-08 11:23:22 +02002066 h1_release(h1c);
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002067 return NULL;
2068}
2069
Christopher Faulet51dbc942018-09-13 09:05:15 +02002070/*******************************************/
2071/* functions below are used by the streams */
2072/*******************************************/
Christopher Faulet73c12072019-04-08 11:23:22 +02002073
Christopher Faulet51dbc942018-09-13 09:05:15 +02002074/*
2075 * Attach a new stream to a connection
2076 * (Used for outgoing connections)
2077 */
Olivier Houchardf502aca2018-12-14 19:42:40 +01002078static struct conn_stream *h1_attach(struct connection *conn, struct session *sess)
Christopher Faulet51dbc942018-09-13 09:05:15 +02002079{
Willy Tarreau3d2ee552018-12-19 14:12:10 +01002080 struct h1c *h1c = conn->ctx;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002081 struct conn_stream *cs = NULL;
2082 struct h1s *h1s;
2083
2084 if (h1c->flags & H1C_F_CS_ERROR)
2085 goto end;
2086
2087 cs = cs_new(h1c->conn);
2088 if (!cs)
2089 goto end;
2090
Olivier Houchardf502aca2018-12-14 19:42:40 +01002091 h1s = h1s_create(h1c, cs, sess);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002092 if (h1s == NULL)
2093 goto end;
2094
2095 return cs;
2096 end:
2097 cs_free(cs);
2098 return NULL;
2099}
2100
2101/* Retrieves a valid conn_stream from this connection, or returns NULL. For
2102 * this mux, it's easy as we can only store a single conn_stream.
2103 */
2104static const struct conn_stream *h1_get_first_cs(const struct connection *conn)
2105{
Willy Tarreau3d2ee552018-12-19 14:12:10 +01002106 struct h1c *h1c = conn->ctx;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002107 struct h1s *h1s = h1c->h1s;
2108
2109 if (h1s)
2110 return h1s->cs;
2111
2112 return NULL;
2113}
2114
Christopher Faulet73c12072019-04-08 11:23:22 +02002115static void h1_destroy(void *ctx)
Christopher Faulet51dbc942018-09-13 09:05:15 +02002116{
Christopher Faulet73c12072019-04-08 11:23:22 +02002117 struct h1c *h1c = ctx;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002118
Christopher Faulet39a96ee2019-04-08 10:52:21 +02002119 if (!h1c->h1s || !h1c->conn || h1c->conn->ctx != h1c)
Christopher Faulet73c12072019-04-08 11:23:22 +02002120 h1_release(h1c);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002121}
2122
2123/*
2124 * Detach the stream from the connection and possibly release the connection.
2125 */
2126static void h1_detach(struct conn_stream *cs)
2127{
2128 struct h1s *h1s = cs->ctx;
2129 struct h1c *h1c;
Olivier Houchardf502aca2018-12-14 19:42:40 +01002130 struct session *sess;
Olivier Houchard8a786902018-12-15 16:05:40 +01002131 int has_keepalive;
2132 int is_not_first;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002133
2134 cs->ctx = NULL;
2135 if (!h1s)
2136 return;
2137
Olivier Houchardf502aca2018-12-14 19:42:40 +01002138 sess = h1s->sess;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002139 h1c = h1s->h1c;
2140 h1s->cs = NULL;
2141
Olivier Houchard8a786902018-12-15 16:05:40 +01002142 has_keepalive = h1s->flags & H1S_F_WANT_KAL;
2143 is_not_first = h1s->flags & H1S_F_NOT_FIRST;
2144 h1s_destroy(h1s);
2145
2146 if (conn_is_back(h1c->conn) && has_keepalive &&
Olivier Houchard44d59142018-12-13 18:46:22 +01002147 !(h1c->conn->flags & (CO_FL_ERROR | CO_FL_SOCK_RD_SH | CO_FL_SOCK_WR_SH))) {
Christopher Faulet9400a392018-11-23 23:10:39 +01002148 /* Never ever allow to reuse a connection from a non-reuse backend */
Olivier Houchard44d59142018-12-13 18:46:22 +01002149 if ((h1c->px->options & PR_O_REUSE_MASK) == PR_O_REUSE_NEVR)
Christopher Faulet9400a392018-11-23 23:10:39 +01002150 h1c->conn->flags |= CO_FL_PRIVATE;
2151
Olivier Houchard44d59142018-12-13 18:46:22 +01002152 if (!(h1c->conn->owner)) {
Olivier Houchardf502aca2018-12-14 19:42:40 +01002153 h1c->conn->owner = sess;
Olivier Houchard351411f2018-12-27 17:20:54 +01002154 if (!session_add_conn(sess, h1c->conn, h1c->conn->target)) {
2155 h1c->conn->owner = NULL;
2156 if (!srv_add_to_idle_list(objt_server(h1c->conn->target), h1c->conn))
2157 /* The server doesn't want it, let's kill the connection right away */
2158 h1c->conn->mux->destroy(h1c->conn);
2159 else
Willy Tarreau3c39a7d2019-06-14 14:42:29 +02002160 tasklet_wakeup(h1c->wait_event.tasklet);
Olivier Houchard351411f2018-12-27 17:20:54 +01002161 return;
2162
2163 }
Olivier Houchard44d59142018-12-13 18:46:22 +01002164 }
Olivier Houcharda4d4fdf2018-12-14 19:27:06 +01002165 if (h1c->conn->owner == sess) {
2166 int ret = session_check_idle_conn(sess, h1c->conn);
2167 if (ret == -1)
2168 /* The connection got destroyed, let's leave */
2169 return;
2170 else if (ret == 1) {
2171 /* The connection was added to the server list,
2172 * wake the task so we can subscribe to events
2173 */
Willy Tarreau3c39a7d2019-06-14 14:42:29 +02002174 tasklet_wakeup(h1c->wait_event.tasklet);
Olivier Houcharda4d4fdf2018-12-14 19:27:06 +01002175 return;
2176 }
2177 }
Christopher Faulet9400a392018-11-23 23:10:39 +01002178 /* we're in keep-alive with an idle connection, monitor it if not already done */
Olivier Houchard44d59142018-12-13 18:46:22 +01002179 if (LIST_ISEMPTY(&h1c->conn->list)) {
Christopher Faulet9400a392018-11-23 23:10:39 +01002180 struct server *srv = objt_server(h1c->conn->target);
2181
2182 if (srv) {
2183 if (h1c->conn->flags & CO_FL_PRIVATE)
2184 LIST_ADD(&srv->priv_conns[tid], &h1c->conn->list);
Olivier Houchard8a786902018-12-15 16:05:40 +01002185 else if (is_not_first)
Christopher Faulet9400a392018-11-23 23:10:39 +01002186 LIST_ADD(&srv->safe_conns[tid], &h1c->conn->list);
2187 else
2188 LIST_ADD(&srv->idle_conns[tid], &h1c->conn->list);
2189 }
2190 }
2191 }
2192
Christopher Faulet51dbc942018-09-13 09:05:15 +02002193 /* We don't want to close right now unless the connection is in error */
Christopher Faulet0ef372a2019-04-08 10:57:20 +02002194 if ((h1c->flags & (H1C_F_CS_ERROR|H1C_F_CS_SHUTDOWN|H1C_F_UPG_H2C)) ||
Olivier Houchard7ccff1a2018-12-03 16:33:19 +01002195 (h1c->conn->flags & CO_FL_ERROR) || !h1c->conn->owner)
Christopher Faulet73c12072019-04-08 11:23:22 +02002196 h1_release(h1c);
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002197 else {
Willy Tarreau3c39a7d2019-06-14 14:42:29 +02002198 tasklet_wakeup(h1c->wait_event.tasklet);
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002199 if (h1c->task) {
2200 h1c->task->expire = TICK_ETERNITY;
2201 if (b_data(&h1c->obuf)) {
Christopher Faulet666a0c42019-01-08 11:12:04 +01002202 h1c->task->expire = tick_add(now_ms, ((h1c->flags & (H1C_F_CS_SHUTW_NOW|H1C_F_CS_SHUTDOWN))
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002203 ? h1c->shut_timeout
2204 : h1c->timeout));
2205 task_queue(h1c->task);
2206 }
2207 }
2208 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002209}
2210
2211
2212static void h1_shutr(struct conn_stream *cs, enum cs_shr_mode mode)
2213{
2214 struct h1s *h1s = cs->ctx;
Christopher Faulet7f366362019-04-08 10:51:20 +02002215 struct h1c *h1c;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002216
2217 if (!h1s)
2218 return;
Christopher Faulet7f366362019-04-08 10:51:20 +02002219 h1c = h1s->h1c;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002220
Christopher Faulet7f366362019-04-08 10:51:20 +02002221 if ((cs->flags & CS_FL_KILL_CONN) || (h1c->conn->flags & (CO_FL_ERROR | CO_FL_SOCK_RD_SH | CO_FL_SOCK_WR_SH)))
2222 goto do_shutr;
2223
Christopher Faulet0ef372a2019-04-08 10:57:20 +02002224 if ((h1c->flags & H1C_F_UPG_H2C) || (h1s->flags & H1S_F_WANT_KAL))
Christopher Fauletf2824e62018-10-01 12:12:37 +02002225 return;
2226
Christopher Faulet7f366362019-04-08 10:51:20 +02002227 do_shutr:
Christopher Faulet51dbc942018-09-13 09:05:15 +02002228 /* NOTE: Be sure to handle abort (cf. h2_shutr) */
2229 if (cs->flags & CS_FL_SHR)
2230 return;
2231 if (conn_xprt_ready(cs->conn) && cs->conn->xprt->shutr)
Olivier Houcharde179d0e2019-03-21 18:27:17 +01002232 cs->conn->xprt->shutr(cs->conn, cs->conn->xprt_ctx,
2233 (mode == CS_SHR_DRAIN));
Christopher Faulet666a0c42019-01-08 11:12:04 +01002234 if ((cs->conn->flags & (CO_FL_SOCK_RD_SH|CO_FL_SOCK_WR_SH)) == (CO_FL_SOCK_RD_SH|CO_FL_SOCK_WR_SH))
Christopher Faulet7f366362019-04-08 10:51:20 +02002235 h1c->flags = (h1c->flags & ~H1C_F_CS_SHUTW_NOW) | H1C_F_CS_SHUTDOWN;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002236}
2237
2238static void h1_shutw(struct conn_stream *cs, enum cs_shw_mode mode)
2239{
2240 struct h1s *h1s = cs->ctx;
2241 struct h1c *h1c;
2242
2243 if (!h1s)
2244 return;
2245 h1c = h1s->h1c;
2246
Christopher Faulet7f366362019-04-08 10:51:20 +02002247 if ((cs->flags & CS_FL_KILL_CONN) || (h1c->conn->flags & (CO_FL_ERROR | CO_FL_SOCK_RD_SH | CO_FL_SOCK_WR_SH)))
2248 goto do_shutw;
Olivier Houchardd2e88c72018-12-19 15:55:23 +01002249
Christopher Faulet0ef372a2019-04-08 10:57:20 +02002250 if ((h1c->flags & H1C_F_UPG_H2C) ||
2251 ((h1s->flags & H1S_F_WANT_KAL) && h1s->req.state == H1_MSG_DONE && h1s->res.state == H1_MSG_DONE))
Christopher Fauletf2824e62018-10-01 12:12:37 +02002252 return;
2253
Christopher Faulet7f366362019-04-08 10:51:20 +02002254 do_shutw:
Christopher Faulet51dbc942018-09-13 09:05:15 +02002255 h1c->flags |= H1C_F_CS_SHUTW_NOW;
2256 if ((cs->flags & CS_FL_SHW) || b_data(&h1c->obuf))
2257 return;
2258
Christopher Faulet666a0c42019-01-08 11:12:04 +01002259 h1_shutw_conn(cs->conn, mode);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002260}
2261
Christopher Faulet666a0c42019-01-08 11:12:04 +01002262static void h1_shutw_conn(struct connection *conn, enum cs_shw_mode mode)
Christopher Faulet51dbc942018-09-13 09:05:15 +02002263{
Willy Tarreau3d2ee552018-12-19 14:12:10 +01002264 struct h1c *h1c = conn->ctx;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002265
Christopher Faulet666a0c42019-01-08 11:12:04 +01002266 conn_xprt_shutw(conn);
2267 conn_sock_shutw(conn, (mode == CS_SHW_NORMAL));
2268 if ((conn->flags & (CO_FL_SOCK_RD_SH|CO_FL_SOCK_WR_SH)) == (CO_FL_SOCK_RD_SH|CO_FL_SOCK_WR_SH))
2269 h1c->flags = (h1c->flags & ~H1C_F_CS_SHUTW_NOW) | H1C_F_CS_SHUTDOWN;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002270}
2271
2272/* Called from the upper layer, to unsubscribe to events */
2273static int h1_unsubscribe(struct conn_stream *cs, int event_type, void *param)
2274{
2275 struct wait_event *sw;
2276 struct h1s *h1s = cs->ctx;
2277
2278 if (!h1s)
2279 return 0;
2280
Willy Tarreau4f6516d2018-12-19 13:59:17 +01002281 if (event_type & SUB_RETRY_RECV) {
Christopher Faulet51dbc942018-09-13 09:05:15 +02002282 sw = param;
Olivier Houchard00b8f7c2019-05-14 18:02:23 +02002283 BUG_ON(h1s->recv_wait != sw);
2284 sw->events &= ~SUB_RETRY_RECV;
2285 h1s->recv_wait = NULL;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002286 }
Willy Tarreau4f6516d2018-12-19 13:59:17 +01002287 if (event_type & SUB_RETRY_SEND) {
Christopher Faulet51dbc942018-09-13 09:05:15 +02002288 sw = param;
Olivier Houchard00b8f7c2019-05-14 18:02:23 +02002289 BUG_ON(h1s->send_wait != sw);
2290 sw->events &= ~SUB_RETRY_SEND;
2291 h1s->send_wait = NULL;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002292 }
2293 return 0;
2294}
2295
2296/* Called from the upper layer, to subscribe to events, such as being able to send */
2297static int h1_subscribe(struct conn_stream *cs, int event_type, void *param)
2298{
2299 struct wait_event *sw;
2300 struct h1s *h1s = cs->ctx;
2301
2302 if (!h1s)
2303 return -1;
2304
2305 switch (event_type) {
Willy Tarreau4f6516d2018-12-19 13:59:17 +01002306 case SUB_RETRY_RECV:
Christopher Faulet51dbc942018-09-13 09:05:15 +02002307 sw = param;
Olivier Houchard00b8f7c2019-05-14 18:02:23 +02002308 BUG_ON(h1s->recv_wait != NULL || (sw->events & SUB_RETRY_RECV));
2309 sw->events |= SUB_RETRY_RECV;
2310 h1s->recv_wait = sw;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002311 return 0;
Willy Tarreau4f6516d2018-12-19 13:59:17 +01002312 case SUB_RETRY_SEND:
Christopher Faulet51dbc942018-09-13 09:05:15 +02002313 sw = param;
Olivier Houchard00b8f7c2019-05-14 18:02:23 +02002314 BUG_ON(h1s->send_wait != NULL || (sw->events & SUB_RETRY_SEND));
2315 sw->events |= SUB_RETRY_SEND;
2316 h1s->send_wait = sw;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002317 return 0;
2318 default:
2319 break;
2320 }
2321 return -1;
2322}
2323
2324/* Called from the upper layer, to receive data */
2325static size_t h1_rcv_buf(struct conn_stream *cs, struct buffer *buf, size_t count, int flags)
2326{
2327 struct h1s *h1s = cs->ctx;
Christopher Faulet539e0292018-11-19 10:40:09 +01002328 struct h1c *h1c = h1s->h1c;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002329 size_t ret = 0;
2330
Christopher Faulet539e0292018-11-19 10:40:09 +01002331 if (!(h1c->flags & H1C_F_IN_ALLOC))
Christopher Faulet30db3d72019-05-17 15:35:33 +02002332 ret = h1_process_input(h1c, buf, count);
Christopher Faulet1be55f92018-10-02 15:59:23 +02002333
Christopher Faulete18777b2019-04-16 16:46:36 +02002334 if (flags & CO_RFL_BUF_FLUSH) {
2335 struct h1m *h1m = (!conn_is_back(cs->conn) ? &h1s->req : &h1s->res);
2336
2337 if (h1m->state != H1_MSG_TUNNEL || (h1m->state == H1_MSG_DATA && h1m->curr_len))
2338 h1s->flags |= H1S_F_BUF_FLUSH;
2339 }
Christopher Fauletd44ad5b2018-11-19 21:52:12 +01002340 else if (ret > 0 || (h1s->flags & H1S_F_SPLICED_DATA)) {
2341 h1s->flags &= ~H1S_F_SPLICED_DATA;
Willy Tarreau4f6516d2018-12-19 13:59:17 +01002342 if (!(h1c->wait_event.events & SUB_RETRY_RECV))
Willy Tarreau3c39a7d2019-06-14 14:42:29 +02002343 tasklet_wakeup(h1c->wait_event.tasklet);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002344 }
2345 return ret;
2346}
2347
2348
2349/* Called from the upper layer, to send data */
2350static size_t h1_snd_buf(struct conn_stream *cs, struct buffer *buf, size_t count, int flags)
2351{
2352 struct h1s *h1s = cs->ctx;
2353 struct h1c *h1c;
Christopher Faulet5d37dac2018-11-22 10:58:42 +01002354 size_t total = 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002355
2356 if (!h1s)
Christopher Faulet5d37dac2018-11-22 10:58:42 +01002357 return 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002358
2359 h1c = h1s->h1c;
Christopher Faulet3b88b8d2018-10-26 17:36:03 +02002360 if (h1c->flags & H1C_F_CS_WAIT_CONN)
2361 return 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002362
Christopher Fauletc31872f2019-06-04 22:09:36 +02002363 while (count) {
Christopher Faulet5d37dac2018-11-22 10:58:42 +01002364 size_t ret = 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002365
Christopher Faulet5d37dac2018-11-22 10:58:42 +01002366 if (!(h1c->flags & (H1C_F_OUT_FULL|H1C_F_OUT_ALLOC)))
2367 ret = h1_process_output(h1c, buf, count);
2368 if (!ret)
2369 break;
2370 total += ret;
Christopher Fauletc31872f2019-06-04 22:09:36 +02002371 count -= ret;
Christopher Faulet5d37dac2018-11-22 10:58:42 +01002372 if (!h1_send(h1c))
2373 break;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002374 }
Christopher Fauletf96c3222018-11-20 18:38:01 +01002375
Christopher Faulet5d37dac2018-11-22 10:58:42 +01002376 return total;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002377}
2378
Willy Tarreaue5733232019-05-22 19:24:06 +02002379#if defined(USE_LINUX_SPLICE)
Christopher Faulet1be55f92018-10-02 15:59:23 +02002380/* Send and get, using splicing */
2381static int h1_rcv_pipe(struct conn_stream *cs, struct pipe *pipe, unsigned int count)
2382{
2383 struct h1s *h1s = cs->ctx;
2384 struct h1m *h1m = (!conn_is_back(cs->conn) ? &h1s->req : &h1s->res);
2385 int ret = 0;
2386
Christopher Faulet1146f972019-05-29 14:35:24 +02002387 if (h1m->state != H1_MSG_DATA && h1m->state != H1_MSG_TUNNEL) {
Christopher Faulete18777b2019-04-16 16:46:36 +02002388 h1s->flags &= ~(H1S_F_BUF_FLUSH|H1S_F_SPLICED_DATA);
Christopher Faulet1146f972019-05-29 14:35:24 +02002389 if (!(h1s->h1c->wait_event.events & SUB_RETRY_RECV))
2390 cs->conn->xprt->subscribe(cs->conn, cs->conn->xprt_ctx, SUB_RETRY_RECV, &h1s->h1c->wait_event);
Christopher Faulete18777b2019-04-16 16:46:36 +02002391 goto end;
2392 }
2393
Willy Tarreaufbdf90a2019-06-03 13:42:54 +02002394 if (h1s_data_pending(h1s)) {
Christopher Fauletd44ad5b2018-11-19 21:52:12 +01002395 h1s->flags |= H1S_F_BUF_FLUSH;
Christopher Faulet1be55f92018-10-02 15:59:23 +02002396 goto end;
Christopher Fauletd44ad5b2018-11-19 21:52:12 +01002397 }
2398
2399 h1s->flags &= ~H1S_F_BUF_FLUSH;
2400 h1s->flags |= H1S_F_SPLICED_DATA;
Christopher Faulet1be55f92018-10-02 15:59:23 +02002401 if (h1m->state == H1_MSG_DATA && count > h1m->curr_len)
2402 count = h1m->curr_len;
Olivier Houcharde179d0e2019-03-21 18:27:17 +01002403 ret = cs->conn->xprt->rcv_pipe(cs->conn, cs->conn->xprt_ctx, pipe, count);
Christopher Faulet1146f972019-05-29 14:35:24 +02002404 if (h1m->state == H1_MSG_DATA && ret >= 0) {
Christopher Faulet1be55f92018-10-02 15:59:23 +02002405 h1m->curr_len -= ret;
Christopher Faulete18777b2019-04-16 16:46:36 +02002406 if (!h1m->curr_len)
2407 h1s->flags &= ~(H1S_F_BUF_FLUSH|H1S_F_SPLICED_DATA);
2408 }
2409
Christopher Faulet1be55f92018-10-02 15:59:23 +02002410 end:
Christopher Faulet038ad812019-04-17 11:03:22 +02002411 if (conn_xprt_read0_pending(cs->conn)) {
Willy Tarreauc493c9c2019-06-03 14:18:22 +02002412 h1s->flags |= H1S_F_REOS;
Christopher Faulet038ad812019-04-17 11:03:22 +02002413 if (!pipe->data)
2414 cs->flags |= CS_FL_EOS;
2415 }
Christopher Faulet1be55f92018-10-02 15:59:23 +02002416 return ret;
Christopher Faulet1be55f92018-10-02 15:59:23 +02002417}
2418
2419static int h1_snd_pipe(struct conn_stream *cs, struct pipe *pipe)
2420{
2421 struct h1s *h1s = cs->ctx;
Christopher Faulet1be55f92018-10-02 15:59:23 +02002422 int ret = 0;
2423
2424 if (b_data(&h1s->h1c->obuf))
2425 goto end;
2426
Olivier Houcharde179d0e2019-03-21 18:27:17 +01002427 ret = cs->conn->xprt->snd_pipe(cs->conn, cs->conn->xprt_ctx, pipe);
Christopher Faulet1be55f92018-10-02 15:59:23 +02002428 end:
Christopher Fauletd44ad5b2018-11-19 21:52:12 +01002429 if (pipe->data) {
Willy Tarreau4f6516d2018-12-19 13:59:17 +01002430 if (!(h1s->h1c->wait_event.events & SUB_RETRY_SEND))
Olivier Houcharde179d0e2019-03-21 18:27:17 +01002431 cs->conn->xprt->subscribe(cs->conn, cs->conn->xprt_ctx, SUB_RETRY_SEND, &h1s->h1c->wait_event);
Christopher Fauletd44ad5b2018-11-19 21:52:12 +01002432 }
Christopher Faulet1be55f92018-10-02 15:59:23 +02002433 return ret;
2434}
2435#endif
2436
Olivier Houcharda8f6b432018-12-21 15:20:29 +01002437/* for debugging with CLI's "show fd" command */
2438static void h1_show_fd(struct buffer *msg, struct connection *conn)
2439{
2440 struct h1c *h1c = conn->ctx;
2441 struct h1s *h1s = h1c->h1s;
2442
Christopher Fauletf376a312019-01-04 15:16:06 +01002443 chunk_appendf(msg, " h1c.flg=0x%x .sub=%d .ibuf=%u@%p+%u/%u .obuf=%u@%p+%u/%u",
2444 h1c->flags, h1c->wait_event.events,
Olivier Houcharda8f6b432018-12-21 15:20:29 +01002445 (unsigned int)b_data(&h1c->ibuf), b_orig(&h1c->ibuf),
2446 (unsigned int)b_head_ofs(&h1c->ibuf), (unsigned int)b_size(&h1c->ibuf),
2447 (unsigned int)b_data(&h1c->obuf), b_orig(&h1c->obuf),
2448 (unsigned int)b_head_ofs(&h1c->obuf), (unsigned int)b_size(&h1c->obuf));
2449
2450 if (h1s) {
2451 char *method;
2452
2453 if (h1s->meth < HTTP_METH_OTHER)
2454 method = http_known_methods[h1s->meth].ptr;
2455 else
2456 method = "UNKNOWN";
2457 chunk_appendf(msg, " h1s=%p h1s.flg=0x%x .req.state=%s .res.state=%s"
2458 " .meth=%s status=%d",
2459 h1s, h1s->flags,
2460 h1m_state_str(h1s->req.state),
2461 h1m_state_str(h1s->res.state), method, h1s->status);
2462 if (h1s->cs)
2463 chunk_appendf(msg, " .cs.flg=0x%08x .cs.data=%p",
2464 h1s->cs->flags, h1s->cs->data);
2465 }
2466}
2467
Christopher Faulet51dbc942018-09-13 09:05:15 +02002468/****************************************/
2469/* MUX initialization and instanciation */
2470/****************************************/
2471
2472/* The mux operations */
Willy Tarreauf77a1582019-01-10 10:00:08 +01002473static const struct mux_ops mux_h1_ops = {
Christopher Faulet51dbc942018-09-13 09:05:15 +02002474 .init = h1_init,
2475 .wake = h1_wake,
2476 .attach = h1_attach,
2477 .get_first_cs = h1_get_first_cs,
Christopher Fauletfeb11742018-11-29 15:12:34 +01002478 .get_cs_info = h1_get_cs_info,
Christopher Faulet51dbc942018-09-13 09:05:15 +02002479 .detach = h1_detach,
2480 .destroy = h1_destroy,
2481 .avail_streams = h1_avail_streams,
Willy Tarreau00f18a32019-01-26 12:19:01 +01002482 .used_streams = h1_used_streams,
Christopher Faulet51dbc942018-09-13 09:05:15 +02002483 .rcv_buf = h1_rcv_buf,
2484 .snd_buf = h1_snd_buf,
Willy Tarreaue5733232019-05-22 19:24:06 +02002485#if defined(USE_LINUX_SPLICE)
Christopher Faulet1be55f92018-10-02 15:59:23 +02002486 .rcv_pipe = h1_rcv_pipe,
2487 .snd_pipe = h1_snd_pipe,
2488#endif
Christopher Faulet51dbc942018-09-13 09:05:15 +02002489 .subscribe = h1_subscribe,
2490 .unsubscribe = h1_unsubscribe,
2491 .shutr = h1_shutr,
2492 .shutw = h1_shutw,
Olivier Houcharda8f6b432018-12-21 15:20:29 +01002493 .show_fd = h1_show_fd,
Olivier Houchard9a86fcb2018-12-11 16:47:14 +01002494 .reset = h1_reset,
Christopher Faulet9f38f5a2019-04-03 09:53:32 +02002495 .flags = MX_FL_HTX,
Willy Tarreau0a7a4fb2019-05-22 11:36:54 +02002496 .name = "H1",
Christopher Faulet51dbc942018-09-13 09:05:15 +02002497};
2498
2499
2500/* this mux registers default HTX proto */
2501static struct mux_proto_list mux_proto_htx =
2502{ .token = IST(""), .mode = PROTO_MODE_HTX, .side = PROTO_SIDE_BOTH, .mux = &mux_h1_ops };
2503
Willy Tarreau0108d902018-11-25 19:14:37 +01002504INITCALL1(STG_REGISTER, register_mux_proto, &mux_proto_htx);
2505
Christopher Faulet51dbc942018-09-13 09:05:15 +02002506/*
2507 * Local variables:
2508 * c-indent-level: 8
2509 * c-basic-offset: 8
2510 * End:
2511 */