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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 */
Christopher Faulet539e0292018-11-19 10:40:09 +010061/* 0x00000008 unused */
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_EOD 0x00000400 /* Set during input process to know the last empty chunk was processed */
70#define H1S_F_HAVE_I_TLR 0x00000800 /* Set during input process to know the trailers were processed */
71#define H1S_F_HAVE_O_EOD 0x00001000 /* Set during output process to know the last empty chunk was processed */
72#define H1S_F_HAVE_O_TLR 0x00002000 /* Set during output process to know the trailers were processed */
Christopher Faulet51dbc942018-09-13 09:05:15 +020073
74/* H1 connection descriptor */
Christopher Faulet51dbc942018-09-13 09:05:15 +020075struct h1c {
76 struct connection *conn;
77 struct proxy *px;
78 uint32_t flags; /* Connection flags: H1C_F_* */
79
80 struct buffer ibuf; /* Input buffer to store data before parsing */
81 struct buffer obuf; /* Output buffer to store data after reformatting */
82
83 struct buffer_wait buf_wait; /* Wait list for buffer allocation */
84 struct wait_event wait_event; /* To be used if we're waiting for I/Os */
85
86 struct h1s *h1s; /* H1 stream descriptor */
Christopher Fauletb8093cf2019-01-03 16:27:28 +010087 struct task *task; /* timeout management task */
88 int timeout; /* idle timeout duration in ticks */
89 int shut_timeout; /* idle timeout duration in ticks after stream shutdown */
Christopher Faulet51dbc942018-09-13 09:05:15 +020090};
91
92/* H1 stream descriptor */
93struct h1s {
94 struct h1c *h1c;
95 struct conn_stream *cs;
Christopher Fauletfeb11742018-11-29 15:12:34 +010096 struct cs_info csinfo; /* CS info, only used for client connections */
97 uint32_t flags; /* Connection flags: H1S_F_* */
Christopher Faulet51dbc942018-09-13 09:05:15 +020098
Christopher Faulet51dbc942018-09-13 09:05:15 +020099 struct wait_event *recv_wait; /* Address of the wait_event the conn_stream associated is waiting on */
100 struct wait_event *send_wait; /* Address of the wait_event the conn_stream associated is waiting on */
Christopher Faulet129817b2018-09-20 16:14:40 +0200101
Olivier Houchardf502aca2018-12-14 19:42:40 +0100102 struct session *sess; /* Associated session */
Christopher Faulet129817b2018-09-20 16:14:40 +0200103 struct h1m req;
104 struct h1m res;
105
106 enum http_meth_t meth; /* HTTP resquest method */
107 uint16_t status; /* HTTP response status */
Christopher Faulet51dbc942018-09-13 09:05:15 +0200108};
109
110/* the h1c and h1s pools */
Willy Tarreau8ceae722018-11-26 11:58:30 +0100111DECLARE_STATIC_POOL(pool_head_h1c, "h1c", sizeof(struct h1c));
112DECLARE_STATIC_POOL(pool_head_h1s, "h1s", sizeof(struct h1s));
Christopher Faulet51dbc942018-09-13 09:05:15 +0200113
Christopher Faulet51dbc942018-09-13 09:05:15 +0200114static int h1_recv(struct h1c *h1c);
115static int h1_send(struct h1c *h1c);
116static int h1_process(struct h1c *h1c);
117static struct task *h1_io_cb(struct task *t, void *ctx, unsigned short state);
Christopher Faulet666a0c42019-01-08 11:12:04 +0100118static void h1_shutw_conn(struct connection *conn, enum cs_shw_mode mode);
Christopher Fauletb8093cf2019-01-03 16:27:28 +0100119static struct task *h1_timeout_task(struct task *t, void *context, unsigned short state);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200120
121/*****************************************************/
122/* functions below are for dynamic buffer management */
123/*****************************************************/
124/*
125 * Indicates whether or not the we may call the h1_recv() function to
126 * attempt to receive data into the buffer and/or parse pending data. The
127 * condition is a bit complex due to some API limits for now. The rules are the
128 * following :
129 * - if an error or a shutdown was detected on the connection and the buffer
130 * is empty, we must not attempt to receive
131 * - if the input buffer failed to be allocated, we must not try to receive
132 * and we know there is nothing pending
133 * - if no flag indicates a blocking condition, we may attempt to receive,
134 * regardless of whether the input buffer is full or not, so that only de
135 * receiving part decides whether or not to block. This is needed because
136 * the connection API indeed prevents us from re-enabling receipt that is
137 * already enabled in a polled state, so we must always immediately stop as
138 * soon as the mux can't proceed so as never to hit an end of read with data
139 * pending in the buffers.
140 * - otherwise must may not attempt to receive
141 */
142static inline int h1_recv_allowed(const struct h1c *h1c)
143{
Christopher Faulet666a0c42019-01-08 11:12:04 +0100144 if (b_data(&h1c->ibuf) == 0 && (h1c->flags & (H1C_F_CS_ERROR|H1C_F_CS_SHUTDOWN)))
Christopher Faulet51dbc942018-09-13 09:05:15 +0200145 return 0;
146
Christopher Fauletcf56b992018-12-11 16:12:31 +0100147 if (h1c->conn->flags & CO_FL_ERROR || conn_xprt_read0_pending(h1c->conn))
148 return 0;
149
Christopher Fauletcb55f482018-12-10 11:56:47 +0100150 if (!(h1c->flags & (H1C_F_IN_ALLOC|H1C_F_IN_FULL|H1C_F_IN_BUSY)))
Christopher Faulet51dbc942018-09-13 09:05:15 +0200151 return 1;
152
153 return 0;
154}
155
156/*
157 * Tries to grab a buffer and to re-enables processing on mux <target>. The h1
158 * flags are used to figure what buffer was requested. It returns 1 if the
159 * allocation succeeds, in which case the connection is woken up, or 0 if it's
160 * impossible to wake up and we prefer to be woken up later.
161 */
162static int h1_buf_available(void *target)
163{
164 struct h1c *h1c = target;
165
166 if ((h1c->flags & H1C_F_IN_ALLOC) && b_alloc_margin(&h1c->ibuf, 0)) {
167 h1c->flags &= ~H1C_F_IN_ALLOC;
168 if (h1_recv_allowed(h1c))
169 tasklet_wakeup(h1c->wait_event.task);
170 return 1;
171 }
172
173 if ((h1c->flags & H1C_F_OUT_ALLOC) && b_alloc_margin(&h1c->obuf, 0)) {
174 h1c->flags &= ~H1C_F_OUT_ALLOC;
175 tasklet_wakeup(h1c->wait_event.task);
176 return 1;
177 }
178
Christopher Faulet51dbc942018-09-13 09:05:15 +0200179 return 0;
180}
181
182/*
183 * Allocate a buffer. If if fails, it adds the mux in buffer wait queue.
184 */
185static inline struct buffer *h1_get_buf(struct h1c *h1c, struct buffer *bptr)
186{
187 struct buffer *buf = NULL;
188
189 if (likely(LIST_ISEMPTY(&h1c->buf_wait.list)) &&
190 unlikely((buf = b_alloc_margin(bptr, 0)) == NULL)) {
191 h1c->buf_wait.target = h1c;
192 h1c->buf_wait.wakeup_cb = h1_buf_available;
193 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
194 LIST_ADDQ(&buffer_wq, &h1c->buf_wait.list);
195 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
196 __conn_xprt_stop_recv(h1c->conn);
197 }
198 return buf;
199}
200
201/*
202 * Release a buffer, if any, and try to wake up entities waiting in the buffer
203 * wait queue.
204 */
205static inline void h1_release_buf(struct h1c *h1c, struct buffer *bptr)
206{
207 if (bptr->size) {
208 b_free(bptr);
209 offer_buffers(h1c->buf_wait.target, tasks_run_queue);
210 }
211}
212
Willy Tarreau00f18a32019-01-26 12:19:01 +0100213/* returns the number of streams in use on a connection to figure if it's
214 * idle or not. We can't have an h1s without a CS so checking h1s is fine,
215 * as the caller will want to know if it was the last one after a detach().
216 */
217static int h1_used_streams(struct connection *conn)
Christopher Faulet51dbc942018-09-13 09:05:15 +0200218{
Willy Tarreau3d2ee552018-12-19 14:12:10 +0100219 struct h1c *h1c = conn->ctx;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200220
Willy Tarreau00f18a32019-01-26 12:19:01 +0100221 return h1c->h1s ? 1 : 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200222}
223
Willy Tarreau00f18a32019-01-26 12:19:01 +0100224/* returns the number of streams still available on a connection */
225static int h1_avail_streams(struct connection *conn)
Olivier Houchard8defe4b2018-12-02 01:31:17 +0100226{
Willy Tarreau00f18a32019-01-26 12:19:01 +0100227 return 1 - h1_used_streams(conn);
Olivier Houchard8defe4b2018-12-02 01:31:17 +0100228}
Christopher Faulet51dbc942018-09-13 09:05:15 +0200229
Willy Tarreau00f18a32019-01-26 12:19:01 +0100230
Christopher Faulet51dbc942018-09-13 09:05:15 +0200231/*****************************************************************/
232/* functions below are dedicated to the mux setup and management */
233/*****************************************************************/
Christopher Faulet47365272018-10-31 17:40:50 +0100234static struct conn_stream *h1s_new_cs(struct h1s *h1s)
235{
236 struct conn_stream *cs;
237
238 cs = cs_new(h1s->h1c->conn);
239 if (!cs)
240 goto err;
241 h1s->cs = cs;
242 cs->ctx = h1s;
243
244 if (h1s->flags & H1S_F_NOT_FIRST)
245 cs->flags |= CS_FL_NOT_FIRST;
246
247 if (stream_create_from_cs(cs) < 0)
248 goto err;
249 return cs;
250
251 err:
252 cs_free(cs);
253 h1s->cs = NULL;
254 return NULL;
255}
256
Olivier Houchardf502aca2018-12-14 19:42:40 +0100257static struct h1s *h1s_create(struct h1c *h1c, struct conn_stream *cs, struct session *sess)
Christopher Faulet51dbc942018-09-13 09:05:15 +0200258{
259 struct h1s *h1s;
260
261 h1s = pool_alloc(pool_head_h1s);
262 if (!h1s)
Christopher Faulet47365272018-10-31 17:40:50 +0100263 goto fail;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200264
265 h1s->h1c = h1c;
266 h1c->h1s = h1s;
267
Olivier Houchardf502aca2018-12-14 19:42:40 +0100268 h1s->sess = sess;
269
Christopher Faulet51dbc942018-09-13 09:05:15 +0200270 h1s->cs = NULL;
Christopher Fauletb992af02019-03-28 15:42:24 +0100271 h1s->flags = H1S_F_WANT_KAL;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200272
273 h1s->recv_wait = NULL;
274 h1s->send_wait = NULL;
Christopher Faulet129817b2018-09-20 16:14:40 +0200275
276 h1m_init_req(&h1s->req);
Christopher Fauletb992af02019-03-28 15:42:24 +0100277 h1s->req.flags |= (H1_MF_NO_PHDR|H1_MF_CLEAN_CONN_HDR);
Christopher Faulet9768c262018-10-22 09:34:31 +0200278
Christopher Faulet129817b2018-09-20 16:14:40 +0200279 h1m_init_res(&h1s->res);
Christopher Fauletb992af02019-03-28 15:42:24 +0100280 h1s->res.flags |= (H1_MF_NO_PHDR|H1_MF_CLEAN_CONN_HDR);
Christopher Faulet129817b2018-09-20 16:14:40 +0200281
282 h1s->status = 0;
283 h1s->meth = HTTP_METH_OTHER;
284
Christopher Faulet47365272018-10-31 17:40:50 +0100285 if (h1c->flags & H1C_F_WAIT_NEXT_REQ)
286 h1s->flags |= H1S_F_NOT_FIRST;
287 h1c->flags &= ~H1C_F_WAIT_NEXT_REQ;
288
Christopher Faulet129817b2018-09-20 16:14:40 +0200289 if (!conn_is_back(h1c->conn)) {
290 if (h1c->px->options2 & PR_O2_REQBUG_OK)
291 h1s->req.err_pos = -1;
Christopher Faulete9b70722019-04-08 10:46:02 +0200292
293 /* For frontend connections we should always have a session */
294 if (!sess)
295 sess = h1c->conn->owner;
296
297 h1s->csinfo.create_date = sess->accept_date;
298 h1s->csinfo.tv_create = sess->tv_accept;
299 h1s->csinfo.t_handshake = sess->t_handshake;
300 h1s->csinfo.t_idle = -1;
Christopher Faulet129817b2018-09-20 16:14:40 +0200301 }
302 else {
303 if (h1c->px->options2 & PR_O2_RSPBUG_OK)
304 h1s->res.err_pos = -1;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200305
Christopher Fauletfeb11742018-11-29 15:12:34 +0100306 h1s->csinfo.create_date = date;
307 h1s->csinfo.tv_create = now;
308 h1s->csinfo.t_handshake = 0;
309 h1s->csinfo.t_idle = -1;
Christopher Faulete9b70722019-04-08 10:46:02 +0200310 }
Christopher Fauletfeb11742018-11-29 15:12:34 +0100311
Christopher Faulete9b70722019-04-08 10:46:02 +0200312 /* If a conn_stream already exists, attach it to this H1S. Otherwise we
313 * create a new one.
314 */
315 if (cs) {
Christopher Fauletf2824e62018-10-01 12:12:37 +0200316 cs->ctx = h1s;
317 h1s->cs = cs;
318 }
Christopher Faulet47365272018-10-31 17:40:50 +0100319 else {
320 cs = h1s_new_cs(h1s);
321 if (!cs)
322 goto fail;
323 }
Christopher Faulet51dbc942018-09-13 09:05:15 +0200324 return h1s;
Christopher Faulet47365272018-10-31 17:40:50 +0100325
326 fail:
327 pool_free(pool_head_h1s, h1s);
328 return NULL;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200329}
330
331static void h1s_destroy(struct h1s *h1s)
332{
Christopher Fauletf2824e62018-10-01 12:12:37 +0200333 if (h1s) {
334 struct h1c *h1c = h1s->h1c;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200335
Christopher Fauletf2824e62018-10-01 12:12:37 +0200336 h1c->h1s = NULL;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200337
Christopher Fauletf2824e62018-10-01 12:12:37 +0200338 if (h1s->recv_wait != NULL)
Willy Tarreau4f6516d2018-12-19 13:59:17 +0100339 h1s->recv_wait->events &= ~SUB_RETRY_RECV;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200340 if (h1s->send_wait != NULL)
Willy Tarreau4f6516d2018-12-19 13:59:17 +0100341 h1s->send_wait->events &= ~SUB_RETRY_SEND;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200342
Christopher Fauletcb55f482018-12-10 11:56:47 +0100343 h1c->flags &= ~H1C_F_IN_BUSY;
Christopher Faulet47365272018-10-31 17:40:50 +0100344 h1c->flags |= H1C_F_WAIT_NEXT_REQ;
345 if (h1s->flags & (H1S_F_REQ_ERROR|H1S_F_RES_ERROR))
346 h1c->flags |= H1C_F_CS_ERROR;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200347 pool_free(pool_head_h1s, h1s);
348 }
Christopher Faulet51dbc942018-09-13 09:05:15 +0200349}
350
Christopher Fauletfeb11742018-11-29 15:12:34 +0100351static const struct cs_info *h1_get_cs_info(struct conn_stream *cs)
352{
353 struct h1s *h1s = cs->ctx;
354
355 if (h1s && !conn_is_back(cs->conn))
356 return &h1s->csinfo;
357 return NULL;
358}
359
Christopher Faulet51dbc942018-09-13 09:05:15 +0200360/*
Christopher Faulet51f73eb2019-04-08 11:22:47 +0200361 * Initialize the mux once it's attached. It is expected that conn->ctx points
362 * to the existing conn_stream (for outgoing connections or for incoming onces
363 * during a mux upgrade) or NULL (for incoming ones during the connexion
364 * establishment). <input> is always used as Input buffer and may contain
365 * data. It is the caller responsibility to not reuse it anymore. Returns < 0 on
366 * error.
Christopher Faulet51dbc942018-09-13 09:05:15 +0200367 */
Christopher Faulet51f73eb2019-04-08 11:22:47 +0200368static int h1_init(struct connection *conn, struct proxy *proxy, struct session *sess,
369 struct buffer *input)
Christopher Faulet51dbc942018-09-13 09:05:15 +0200370{
Christopher Faulet51dbc942018-09-13 09:05:15 +0200371 struct h1c *h1c;
Christopher Fauletb8093cf2019-01-03 16:27:28 +0100372 struct task *t = NULL;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200373
374 h1c = pool_alloc(pool_head_h1c);
375 if (!h1c)
376 goto fail_h1c;
377 h1c->conn = conn;
378 h1c->px = proxy;
379
380 h1c->flags = H1C_F_NONE;
Christopher Faulet51f73eb2019-04-08 11:22:47 +0200381 h1c->ibuf = *input;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200382 h1c->obuf = BUF_NULL;
383 h1c->h1s = NULL;
Christopher Faulet51f73eb2019-04-08 11:22:47 +0200384 h1c->task = NULL;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200385
Christopher Faulet51dbc942018-09-13 09:05:15 +0200386 LIST_INIT(&h1c->buf_wait.list);
387 h1c->wait_event.task = tasklet_new();
388 if (!h1c->wait_event.task)
389 goto fail;
390 h1c->wait_event.task->process = h1_io_cb;
391 h1c->wait_event.task->context = h1c;
Willy Tarreau4f6516d2018-12-19 13:59:17 +0100392 h1c->wait_event.events = 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200393
Christopher Faulete9b70722019-04-08 10:46:02 +0200394 if (conn_is_back(conn)) {
Christopher Fauletb8093cf2019-01-03 16:27:28 +0100395 h1c->shut_timeout = h1c->timeout = proxy->timeout.server;
396 if (tick_isset(proxy->timeout.serverfin))
397 h1c->shut_timeout = proxy->timeout.serverfin;
398 } else {
399 h1c->shut_timeout = h1c->timeout = proxy->timeout.client;
400 if (tick_isset(proxy->timeout.clientfin))
401 h1c->shut_timeout = proxy->timeout.clientfin;
402 }
403 if (tick_isset(h1c->timeout)) {
404 t = task_new(tid_bit);
405 if (!t)
406 goto fail;
407
408 h1c->task = t;
409 t->process = h1_timeout_task;
410 t->context = h1c;
411 t->expire = tick_add(now_ms, h1c->timeout);
412 }
413
Christopher Faulet3b88b8d2018-10-26 17:36:03 +0200414 if (!(conn->flags & CO_FL_CONNECTED))
415 h1c->flags |= H1C_F_CS_WAIT_CONN;
416
Christopher Fauletf2824e62018-10-01 12:12:37 +0200417 /* Always Create a new H1S */
Willy Tarreau3d2ee552018-12-19 14:12:10 +0100418 if (!h1s_create(h1c, conn->ctx, sess))
Christopher Fauletf2824e62018-10-01 12:12:37 +0200419 goto fail;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200420
Willy Tarreau3d2ee552018-12-19 14:12:10 +0100421 conn->ctx = h1c;
Christopher Faulet129817b2018-09-20 16:14:40 +0200422
Christopher Fauletb8093cf2019-01-03 16:27:28 +0100423
424 if (t)
425 task_queue(t);
426
Christopher Faulet51dbc942018-09-13 09:05:15 +0200427 /* Try to read, if nothing is available yet we'll just subscribe */
Olivier Houchard9b960a82019-01-04 16:51:40 +0100428 tasklet_wakeup(h1c->wait_event.task);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200429
430 /* mux->wake will be called soon to complete the operation */
431 return 0;
432
433 fail:
Willy Tarreauf6562792019-05-07 19:05:35 +0200434 task_destroy(t);
Christopher Faulet47365272018-10-31 17:40:50 +0100435 if (h1c->wait_event.task)
Christopher Faulet51dbc942018-09-13 09:05:15 +0200436 tasklet_free(h1c->wait_event.task);
437 pool_free(pool_head_h1c, h1c);
438 fail_h1c:
439 return -1;
440}
441
Christopher Faulet73c12072019-04-08 11:23:22 +0200442/* release function. This one should be called to free all resources allocated
443 * to the mux.
Christopher Faulet51dbc942018-09-13 09:05:15 +0200444 */
Christopher Faulet73c12072019-04-08 11:23:22 +0200445static void h1_release(struct h1c *h1c)
Christopher Faulet51dbc942018-09-13 09:05:15 +0200446{
Christopher Faulet61840e72019-04-15 09:33:32 +0200447 struct connection *conn = NULL;
Christopher Faulet39a96ee2019-04-08 10:52:21 +0200448
Christopher Faulet51dbc942018-09-13 09:05:15 +0200449 if (h1c) {
Christopher Faulet61840e72019-04-15 09:33:32 +0200450 /* The connection must be aattached to this mux to be released */
451 if (h1c->conn && h1c->conn->ctx == h1c)
452 conn = h1c->conn;
453
454 if (conn && h1c->flags & H1C_F_UPG_H2C) {
Christopher Faulet0ef372a2019-04-08 10:57:20 +0200455 h1c->flags &= ~H1C_F_UPG_H2C;
456 if (conn_upgrade_mux_fe(conn, NULL, &h1c->ibuf, ist("h2"), PROTO_MODE_HTX) != -1) {
457 /* connection successfully upgraded to H2, this
458 * mux was already released */
459 return;
460 }
461 sess_log(conn->owner); /* Log if the upgrade failed */
462 }
463
Christopher Faulet61840e72019-04-15 09:33:32 +0200464
Christopher Faulet51dbc942018-09-13 09:05:15 +0200465 if (!LIST_ISEMPTY(&h1c->buf_wait.list)) {
466 HA_SPIN_LOCK(BUF_WQ_LOCK, &buffer_wq_lock);
467 LIST_DEL(&h1c->buf_wait.list);
468 LIST_INIT(&h1c->buf_wait.list);
469 HA_SPIN_UNLOCK(BUF_WQ_LOCK, &buffer_wq_lock);
470 }
471
472 h1_release_buf(h1c, &h1c->ibuf);
473 h1_release_buf(h1c, &h1c->obuf);
474
Christopher Fauletb8093cf2019-01-03 16:27:28 +0100475 if (h1c->task) {
476 h1c->task->context = NULL;
477 task_wakeup(h1c->task, TASK_WOKEN_OTHER);
478 h1c->task = NULL;
479 }
480
Christopher Faulet51dbc942018-09-13 09:05:15 +0200481 if (h1c->wait_event.task)
482 tasklet_free(h1c->wait_event.task);
483
Christopher Fauletf2824e62018-10-01 12:12:37 +0200484 h1s_destroy(h1c->h1s);
Olivier Houchard0e079372019-04-15 17:51:16 +0200485 if (conn && h1c->wait_event.events != 0)
Olivier Houcharde179d0e2019-03-21 18:27:17 +0100486 conn->xprt->unsubscribe(conn, conn->xprt_ctx, h1c->wait_event.events,
Olivier Houchard0e079372019-04-15 17:51:16 +0200487 &h1c->wait_event);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200488 pool_free(pool_head_h1c, h1c);
489 }
490
Christopher Faulet39a96ee2019-04-08 10:52:21 +0200491 if (conn) {
492 conn->mux = NULL;
493 conn->ctx = NULL;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200494
Christopher Faulet39a96ee2019-04-08 10:52:21 +0200495 conn_stop_tracking(conn);
496 conn_full_close(conn);
497 if (conn->destroy_cb)
498 conn->destroy_cb(conn);
499 conn_free(conn);
500 }
Christopher Faulet51dbc942018-09-13 09:05:15 +0200501}
502
503/******************************************************/
504/* functions below are for the H1 protocol processing */
505/******************************************************/
Christopher Faulet9768c262018-10-22 09:34:31 +0200506/* Parse the request version and set H1_MF_VER_11 on <h1m> if the version is
507 * greater or equal to 1.1
Christopher Fauletf2824e62018-10-01 12:12:37 +0200508 */
Christopher Faulet570d1612018-11-26 11:13:57 +0100509static void h1_parse_req_vsn(struct h1m *h1m, const struct htx_sl *sl)
Christopher Fauletf2824e62018-10-01 12:12:37 +0200510{
Christopher Faulet570d1612018-11-26 11:13:57 +0100511 const char *p = HTX_SL_REQ_VPTR(sl);
Christopher Faulet9768c262018-10-22 09:34:31 +0200512
Christopher Faulet570d1612018-11-26 11:13:57 +0100513 if ((HTX_SL_REQ_VLEN(sl) == 8) &&
Christopher Faulet9768c262018-10-22 09:34:31 +0200514 (*(p + 5) > '1' ||
515 (*(p + 5) == '1' && *(p + 7) >= '1')))
516 h1m->flags |= H1_MF_VER_11;
517}
Christopher Fauletf2824e62018-10-01 12:12:37 +0200518
Christopher Faulet9768c262018-10-22 09:34:31 +0200519/* Parse the response version and set H1_MF_VER_11 on <h1m> if the version is
520 * greater or equal to 1.1
521 */
Christopher Faulet570d1612018-11-26 11:13:57 +0100522static void h1_parse_res_vsn(struct h1m *h1m, const struct htx_sl *sl)
Christopher Faulet9768c262018-10-22 09:34:31 +0200523{
Christopher Faulet570d1612018-11-26 11:13:57 +0100524 const char *p = HTX_SL_RES_VPTR(sl);
Christopher Fauletf2824e62018-10-01 12:12:37 +0200525
Christopher Faulet570d1612018-11-26 11:13:57 +0100526 if ((HTX_SL_RES_VLEN(sl) == 8) &&
Christopher Faulet9768c262018-10-22 09:34:31 +0200527 (*(p + 5) > '1' ||
528 (*(p + 5) == '1' && *(p + 7) >= '1')))
529 h1m->flags |= H1_MF_VER_11;
530}
Christopher Fauletf2824e62018-10-01 12:12:37 +0200531
Christopher Faulet9768c262018-10-22 09:34:31 +0200532/*
533 * Check the validity of the request version. If the version is valid, it
534 * returns 1. Otherwise, it returns 0.
535 */
536static int h1_process_req_vsn(struct h1s *h1s, struct h1m *h1m, union h1_sl sl)
537{
538 struct h1c *h1c = h1s->h1c;
539
540 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
541 * exactly one digit "." one digit. This check may be disabled using
542 * option accept-invalid-http-request.
543 */
544 if (!(h1c->px->options2 & PR_O2_REQBUG_OK)) {
545 if (sl.rq.v.len != 8)
546 return 0;
547
548 if (*(sl.rq.v.ptr + 4) != '/' ||
549 !isdigit((unsigned char)*(sl.rq.v.ptr + 5)) ||
550 *(sl.rq.v.ptr + 6) != '.' ||
551 !isdigit((unsigned char)*(sl.rq.v.ptr + 7)))
552 return 0;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200553 }
Christopher Faulet9768c262018-10-22 09:34:31 +0200554 else if (!sl.rq.v.len) {
555 /* try to convert HTTP/0.9 requests to HTTP/1.0 */
Christopher Fauletf2824e62018-10-01 12:12:37 +0200556
Christopher Faulet9768c262018-10-22 09:34:31 +0200557 /* RFC 1945 allows only GET for HTTP/0.9 requests */
558 if (sl.rq.meth != HTTP_METH_GET)
559 return 0;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200560
Christopher Faulet9768c262018-10-22 09:34:31 +0200561 /* HTTP/0.9 requests *must* have a request URI, per RFC 1945 */
562 if (!sl.rq.u.len)
563 return 0;
564
565 /* Add HTTP version */
566 sl.rq.v = ist("HTTP/1.0");
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100567 return 1;
Christopher Faulet9768c262018-10-22 09:34:31 +0200568 }
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100569
570 if ((sl.rq.v.len == 8) &&
Christopher Fauletaa75b3d2018-12-05 16:20:40 +0100571 ((*(sl.rq.v.ptr + 5) > '1') ||
572 ((*(sl.rq.v.ptr + 5) == '1') && (*(sl.rq.v.ptr + 7) >= '1'))))
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100573 h1m->flags |= H1_MF_VER_11;
Christopher Faulet9768c262018-10-22 09:34:31 +0200574 return 1;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200575}
576
Christopher Faulet9768c262018-10-22 09:34:31 +0200577/*
578 * Check the validity of the response version. If the version is valid, it
579 * returns 1. Otherwise, it returns 0.
Christopher Fauletf2824e62018-10-01 12:12:37 +0200580 */
Christopher Faulet9768c262018-10-22 09:34:31 +0200581static int h1_process_res_vsn(struct h1s *h1s, struct h1m *h1m, union h1_sl sl)
Christopher Fauletf2824e62018-10-01 12:12:37 +0200582{
Christopher Faulet9768c262018-10-22 09:34:31 +0200583 struct h1c *h1c = h1s->h1c;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200584
Christopher Faulet9768c262018-10-22 09:34:31 +0200585 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
586 * exactly one digit "." one digit. This check may be disabled using
587 * option accept-invalid-http-request.
588 */
589 if (!(h1c->px->options2 & PR_O2_RSPBUG_OK)) {
590 if (sl.st.v.len != 8)
591 return 0;
592
593 if (*(sl.st.v.ptr + 4) != '/' ||
594 !isdigit((unsigned char)*(sl.st.v.ptr + 5)) ||
595 *(sl.st.v.ptr + 6) != '.' ||
596 !isdigit((unsigned char)*(sl.st.v.ptr + 7)))
597 return 0;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200598 }
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100599
600 if ((sl.st.v.len == 8) &&
Christopher Fauletaa75b3d2018-12-05 16:20:40 +0100601 ((*(sl.st.v.ptr + 5) > '1') ||
602 ((*(sl.st.v.ptr + 5) == '1') && (*(sl.st.v.ptr + 7) >= '1'))))
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100603 h1m->flags |= H1_MF_VER_11;
604
Christopher Faulet9768c262018-10-22 09:34:31 +0200605 return 1;
606}
Christopher Fauletf2824e62018-10-01 12:12:37 +0200607
608/* Deduce the connection mode of the client connection, depending on the
609 * configuration and the H1 message flags. This function is called twice, the
610 * first time when the request is parsed and the second time when the response
611 * is parsed.
612 */
613static void h1_set_cli_conn_mode(struct h1s *h1s, struct h1m *h1m)
614{
615 struct proxy *fe = h1s->h1c->px;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200616
617 if (h1m->flags & H1_MF_RESP) {
Christopher Fauletb992af02019-03-28 15:42:24 +0100618 /* Output direction: second pass */
Christopher Fauletf2824e62018-10-01 12:12:37 +0200619 if ((h1s->meth == HTTP_METH_CONNECT && h1s->status == 200) ||
Christopher Fauletb992af02019-03-28 15:42:24 +0100620 h1s->status == 101) {
621 /* Either we've established an explicit tunnel, or we're
622 * switching the protocol. In both cases, we're very unlikely to
623 * understand the next protocols. We have to switch to tunnel
624 * mode, so that we transfer the request and responses then let
625 * this protocol pass unmodified. When we later implement
626 * specific parsers for such protocols, we'll want to check the
627 * Upgrade header which contains information about that protocol
628 * for responses with status 101 (eg: see RFC2817 about TLS).
629 */
Christopher Fauletf2824e62018-10-01 12:12:37 +0200630 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_TUN;
Christopher Fauletb992af02019-03-28 15:42:24 +0100631 }
632 else if (h1s->flags & H1S_F_WANT_KAL) {
633 /* By default the client is in KAL mode. CLOSE mode mean
634 * it is imposed by the client itself. So only change
635 * KAL mode here. */
636 if (!(h1m->flags & H1_MF_XFER_LEN) || (h1m->flags & H1_MF_CONN_CLO)) {
637 /* no length known or explicit close => close */
638 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
639 }
640 else if (!(h1m->flags & H1_MF_CONN_KAL) &&
641 (fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_CLO) {
642 /* no explict keep-alive and option httpclose => close */
643 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
644 }
645 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200646 }
647 else {
Christopher Fauletb992af02019-03-28 15:42:24 +0100648 /* Input direction: first pass */
649 if (!(h1m->flags & (H1_MF_VER_11|H1_MF_CONN_KAL)) || h1m->flags & H1_MF_CONN_CLO) {
650 /* no explicit keep-alive in HTTP/1.0 or explicit close => close*/
Christopher Fauletf2824e62018-10-01 12:12:37 +0200651 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Fauletb992af02019-03-28 15:42:24 +0100652 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200653 }
654
655 /* If KAL, check if the frontend is stopping. If yes, switch in CLO mode */
656 if (h1s->flags & H1S_F_WANT_KAL && fe->state == PR_STSTOPPED)
657 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
658}
659
660/* Deduce the connection mode of the client connection, depending on the
661 * configuration and the H1 message flags. This function is called twice, the
662 * first time when the request is parsed and the second time when the response
663 * is parsed.
664 */
665static void h1_set_srv_conn_mode(struct h1s *h1s, struct h1m *h1m)
666{
Olivier Houchardf502aca2018-12-14 19:42:40 +0100667 struct session *sess = h1s->sess;
Christopher Fauletb992af02019-03-28 15:42:24 +0100668 struct proxy *be = h1s->h1c->px;
Olivier Houchardf502aca2018-12-14 19:42:40 +0100669 int fe_flags = sess ? sess->fe->options : 0;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200670
Christopher Fauletf2824e62018-10-01 12:12:37 +0200671 if (h1m->flags & H1_MF_RESP) {
Christopher Fauletb992af02019-03-28 15:42:24 +0100672 /* Input direction: second pass */
673
Christopher Fauletf2824e62018-10-01 12:12:37 +0200674 if ((h1s->meth == HTTP_METH_CONNECT && h1s->status == 200) ||
Christopher Fauletb992af02019-03-28 15:42:24 +0100675 h1s->status == 101) {
676 /* Either we've established an explicit tunnel, or we're
677 * switching the protocol. In both cases, we're very unlikely to
678 * understand the next protocols. We have to switch to tunnel
679 * mode, so that we transfer the request and responses then let
680 * this protocol pass unmodified. When we later implement
681 * specific parsers for such protocols, we'll want to check the
682 * Upgrade header which contains information about that protocol
683 * for responses with status 101 (eg: see RFC2817 about TLS).
684 */
Christopher Fauletf2824e62018-10-01 12:12:37 +0200685 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_TUN;
Christopher Fauletb992af02019-03-28 15:42:24 +0100686 }
687 else if (h1s->flags & H1S_F_WANT_KAL) {
688 /* By default the server is in KAL mode. CLOSE mode mean
689 * it is imposed by haproxy itself. So only change KAL
690 * mode here. */
691 if (!(h1m->flags & H1_MF_XFER_LEN) || h1m->flags & H1_MF_CONN_CLO ||
692 !(h1m->flags & (H1_MF_VER_11|H1_MF_CONN_KAL))){
693 /* no length known or explicit close or no explicit keep-alive in HTTP/1.0 => close */
694 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
695 }
696 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200697 }
Christopher Faulet70033782018-12-05 13:50:11 +0100698 else {
Christopher Fauletb992af02019-03-28 15:42:24 +0100699 /* Output direction: first pass */
700 if (h1m->flags & H1_MF_CONN_CLO) {
701 /* explicit close => close */
Christopher Faulet70033782018-12-05 13:50:11 +0100702 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Fauletb992af02019-03-28 15:42:24 +0100703 }
704 else if (!(h1m->flags & H1_MF_CONN_KAL) &&
705 ((fe_flags & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
706 (be->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
707 (fe_flags & PR_O_HTTP_MODE) == PR_O_HTTP_CLO ||
708 (be->options & PR_O_HTTP_MODE) == PR_O_HTTP_CLO)) {
709 /* no explicit keep-alive option httpclose/server-close => close */
710 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
711 }
Christopher Faulet70033782018-12-05 13:50:11 +0100712 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200713
714 /* If KAL, check if the backend is stopping. If yes, switch in CLO mode */
715 if (h1s->flags & H1S_F_WANT_KAL && be->state == PR_STSTOPPED)
716 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200717}
718
Christopher Fauletb992af02019-03-28 15:42:24 +0100719static void h1_update_req_conn_value(struct h1s *h1s, struct h1m *h1m, struct ist *conn_val)
Christopher Fauletf2824e62018-10-01 12:12:37 +0200720{
721 struct proxy *px = h1s->h1c->px;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200722
723 /* Don't update "Connection:" header in TUNNEL mode or if "Upgrage"
724 * token is found
725 */
726 if (h1s->flags & H1S_F_WANT_TUN || h1m->flags & H1_MF_CONN_UPG)
Christopher Faulet9768c262018-10-22 09:34:31 +0200727 return;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200728
729 if (h1s->flags & H1S_F_WANT_KAL || px->options2 & PR_O2_FAKE_KA) {
Christopher Fauletb992af02019-03-28 15:42:24 +0100730 if (!(h1m->flags & H1_MF_VER_11))
731 *conn_val = ist("keep-alive");
Christopher Fauletf2824e62018-10-01 12:12:37 +0200732 }
733 else { /* H1S_F_WANT_CLO && !PR_O2_FAKE_KA */
Christopher Fauletb992af02019-03-28 15:42:24 +0100734 if (h1m->flags & H1_MF_VER_11)
735 *conn_val = ist("close");
Christopher Fauletf2824e62018-10-01 12:12:37 +0200736 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200737}
738
Christopher Fauletb992af02019-03-28 15:42:24 +0100739static void h1_update_res_conn_value(struct h1s *h1s, struct h1m *h1m, struct ist *conn_val)
Christopher Fauletf2824e62018-10-01 12:12:37 +0200740{
Christopher Fauletf2824e62018-10-01 12:12:37 +0200741 /* Don't update "Connection:" header in TUNNEL mode or if "Upgrage"
742 * token is found
743 */
744 if (h1s->flags & H1S_F_WANT_TUN || h1m->flags & H1_MF_CONN_UPG)
Christopher Faulet9768c262018-10-22 09:34:31 +0200745 return;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200746
747 if (h1s->flags & H1S_F_WANT_KAL) {
Christopher Fauletb992af02019-03-28 15:42:24 +0100748 if (!(h1m->flags & H1_MF_VER_11) ||
749 !((h1m->flags & h1s->req.flags) & H1_MF_VER_11))
750 *conn_val = ist("keep-alive");
Christopher Fauletf2824e62018-10-01 12:12:37 +0200751 }
752 else { /* H1S_F_WANT_CLO */
Christopher Fauletb992af02019-03-28 15:42:24 +0100753 if (h1m->flags & H1_MF_VER_11)
754 *conn_val = ist("close");
Christopher Fauletf2824e62018-10-01 12:12:37 +0200755 }
Christopher Faulet9768c262018-10-22 09:34:31 +0200756}
Christopher Fauletf2824e62018-10-01 12:12:37 +0200757
Christopher Fauletb992af02019-03-28 15:42:24 +0100758static void h1_process_input_conn_mode(struct h1s *h1s, struct h1m *h1m, struct htx *htx)
Christopher Faulet9768c262018-10-22 09:34:31 +0200759{
Christopher Fauletb992af02019-03-28 15:42:24 +0100760 if (!conn_is_back(h1s->h1c->conn))
Christopher Faulet9768c262018-10-22 09:34:31 +0200761 h1_set_cli_conn_mode(h1s, h1m);
Christopher Fauletb992af02019-03-28 15:42:24 +0100762 else
Christopher Faulet9768c262018-10-22 09:34:31 +0200763 h1_set_srv_conn_mode(h1s, h1m);
Christopher Fauletf2824e62018-10-01 12:12:37 +0200764}
765
Christopher Fauletb992af02019-03-28 15:42:24 +0100766static void h1_process_output_conn_mode(struct h1s *h1s, struct h1m *h1m, struct ist *conn_val)
767{
768 if (!conn_is_back(h1s->h1c->conn))
769 h1_set_cli_conn_mode(h1s, h1m);
770 else
771 h1_set_srv_conn_mode(h1s, h1m);
772
773 if (!(h1m->flags & H1_MF_RESP))
774 h1_update_req_conn_value(h1s, h1m, conn_val);
775 else
776 h1_update_res_conn_value(h1s, h1m, conn_val);
777}
Christopher Faulete44769b2018-11-29 23:01:45 +0100778
779/* Append the description of what is present in error snapshot <es> into <out>.
780 * The description must be small enough to always fit in a buffer. The output
781 * buffer may be the trash so the trash must not be used inside this function.
782 */
783static void h1_show_error_snapshot(struct buffer *out, const struct error_snapshot *es)
784{
785 chunk_appendf(out,
Christopher Fauletaa75b3d2018-12-05 16:20:40 +0100786 " H1 connection flags 0x%08x, H1 stream flags 0x%08x\n"
787 " H1 msg state %s(%d), H1 msg flags 0x%08x\n"
788 " H1 chunk len %lld bytes, H1 body len %lld bytes :\n",
789 es->ctx.h1.c_flags, es->ctx.h1.s_flags,
790 h1m_state_str(es->ctx.h1.state), es->ctx.h1.state,
791 es->ctx.h1.m_flags, es->ctx.h1.m_clen, es->ctx.h1.m_blen);
Christopher Faulete44769b2018-11-29 23:01:45 +0100792}
793/*
794 * Capture a bad request or response and archive it in the proxy's structure.
795 * By default it tries to report the error position as h1m->err_pos. However if
796 * this one is not set, it will then report h1m->next, which is the last known
797 * parsing point. The function is able to deal with wrapping buffers. It always
798 * displays buffers as a contiguous area starting at buf->p. The direction is
799 * determined thanks to the h1m's flags.
800 */
801static void h1_capture_bad_message(struct h1c *h1c, struct h1s *h1s,
802 struct h1m *h1m, struct buffer *buf)
803{
804 struct session *sess = h1c->conn->owner;
805 struct proxy *proxy = h1c->px;
806 struct proxy *other_end = sess->fe;
807 union error_snapshot_ctx ctx;
808
Willy Tarreau598d7fc2018-12-18 18:10:38 +0100809 if (h1s->cs->data && !(h1m->flags & H1_MF_RESP))
Christopher Faulete44769b2018-11-29 23:01:45 +0100810 other_end = si_strm(h1s->cs->data)->be;
811
812 /* http-specific part now */
813 ctx.h1.state = h1m->state;
814 ctx.h1.c_flags = h1c->flags;
815 ctx.h1.s_flags = h1s->flags;
816 ctx.h1.m_flags = h1m->flags;
817 ctx.h1.m_clen = h1m->curr_len;
818 ctx.h1.m_blen = h1m->body_len;
819
820 proxy_capture_error(proxy, !!(h1m->flags & H1_MF_RESP), other_end,
821 h1c->conn->target, sess, buf, 0, 0,
Christopher Fauletaa75b3d2018-12-05 16:20:40 +0100822 (h1m->err_pos >= 0) ? h1m->err_pos : h1m->next,
823 &ctx, h1_show_error_snapshot);
Christopher Faulete44769b2018-11-29 23:01:45 +0100824}
825
Christopher Fauletadb22202018-12-12 10:32:09 +0100826/* Emit the chunksize followed by a CRLF in front of data of the buffer
827 * <buf>. It goes backwards and starts with the byte before the buffer's
828 * head. The caller is responsible for ensuring there is enough room left before
829 * the buffer's head for the string.
830 */
831static void h1_emit_chunk_size(struct buffer *buf, size_t chksz)
832{
833 char *beg, *end;
834
835 beg = end = b_head(buf);
836 *--beg = '\n';
837 *--beg = '\r';
838 do {
839 *--beg = hextab[chksz & 0xF];
840 } while (chksz >>= 4);
841 buf->head -= (end - beg);
842 b_add(buf, end - beg);
843}
844
845/* Emit a CRLF after the data of the buffer <buf>. The caller is responsible for
846 * ensuring there is enough room left in the buffer for the string. */
847static void h1_emit_chunk_crlf(struct buffer *buf)
848{
849 *(b_peek(buf, b_data(buf))) = '\r';
850 *(b_peek(buf, b_data(buf) + 1)) = '\n';
851 b_add(buf, 2);
852}
853
Christopher Faulet129817b2018-09-20 16:14:40 +0200854/*
Christopher Fauletc62c2b92019-03-28 11:41:39 +0100855 * Switch the request to tunnel mode. This function must only be called for
856 * CONNECT requests. On the client side, the mux is mark as busy on input,
857 * waiting the response.
858 */
859static void h1_set_req_tunnel_mode(struct h1s *h1s)
860{
861 h1s->req.flags &= ~(H1_MF_XFER_LEN|H1_MF_CLEN|H1_MF_CHNK);
862 h1s->req.state = H1_MSG_TUNNEL;
863 if (!conn_is_back(h1s->h1c->conn))
864 h1s->h1c->flags |= H1C_F_IN_BUSY;
865}
866
867/*
868 * Switch the response to tunnel mode. This function must only be called on
869 * successfull replies to CONNECT requests or on protocol switching. On the
870 * server side, if the request is not finished, the mux is mark as busy on
871 * input. Otherwise the request is also switch to tunnel mode.
872 */
873static void h1_set_res_tunnel_mode(struct h1s *h1s)
874{
875 h1s->res.flags &= ~(H1_MF_XFER_LEN|H1_MF_CLEN|H1_MF_CHNK);
876 h1s->res.state = H1_MSG_TUNNEL;
877 if (conn_is_back(h1s->h1c->conn) && h1s->req.state < H1_MSG_DONE)
878 h1s->h1c->flags |= H1C_F_IN_BUSY;
879 else {
880 h1s->req.flags &= ~(H1_MF_XFER_LEN|H1_MF_CLEN|H1_MF_CHNK);
881 h1s->req.state = H1_MSG_TUNNEL;
882 if (h1s->h1c->flags & H1C_F_IN_BUSY) {
883 h1s->h1c->flags &= ~H1C_F_IN_BUSY;
884 tasklet_wakeup(h1s->h1c->wait_event.task);
885 }
886 }
887}
888
889/*
Christopher Fauletcdc90e92019-03-28 13:28:46 +0100890 * Handle 100-Continue responses or any other informational 1xx responses which
891 * is non-final. In such case, this function reset the response parser. It is
892 * the caller responsibility to call this function when appropriate.
893 */
894static void h1_handle_1xx_response(struct h1s *h1s, struct h1m *h1m)
895{
896 if ((h1m->flags & H1_MF_RESP) && h1m->state == H1_MSG_DONE &&
897 h1s->status < 200 && (h1s->status == 100 || h1s->status >= 102)) {
898 h1m_init_res(&h1s->res);
Christopher Fauletb992af02019-03-28 15:42:24 +0100899 h1m->flags |= (H1_MF_NO_PHDR|H1_MF_CLEAN_CONN_HDR);
Christopher Fauletcdc90e92019-03-28 13:28:46 +0100900 h1s->h1c->flags &= ~H1C_F_IN_BUSY;
901 }
902}
903
904/*
Christopher Faulet129817b2018-09-20 16:14:40 +0200905 * Parse HTTP/1 headers. It returns the number of bytes parsed if > 0, or 0 if
Christopher Fauletf2824e62018-10-01 12:12:37 +0200906 * it couldn't proceed. Parsing errors are reported by setting H1S_F_*_ERROR
907 * flag and filling h1s->err_pos and h1s->err_state fields. This functions is
Joseph Herlant30bc5092018-11-25 10:52:20 -0800908 * responsible to update the parser state <h1m>.
Christopher Faulet129817b2018-09-20 16:14:40 +0200909 */
Christopher Faulet9768c262018-10-22 09:34:31 +0200910static size_t h1_process_headers(struct h1s *h1s, struct h1m *h1m, struct htx *htx,
Christopher Fauletf2824e62018-10-01 12:12:37 +0200911 struct buffer *buf, size_t *ofs, size_t max)
Christopher Faulet129817b2018-09-20 16:14:40 +0200912{
913 struct http_hdr hdrs[MAX_HTTP_HDR];
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100914 union h1_sl h1sl;
915 unsigned int flags = HTX_SL_F_NONE;
Christopher Faulet129817b2018-09-20 16:14:40 +0200916 int ret = 0;
917
Christopher Fauletd44ad5b2018-11-19 21:52:12 +0100918 if (!max)
919 goto end;
920
Christopher Faulet129817b2018-09-20 16:14:40 +0200921 /* Realing input buffer if necessary */
922 if (b_head(buf) + b_data(buf) > b_wrap(buf))
923 b_slow_realign(buf, trash.area, 0);
924
Christopher Faulet0ef372a2019-04-08 10:57:20 +0200925 if (!(h1m->flags & H1_MF_RESP)) {
926 /* Try to match H2 preface before parsing the request headers. */
927 ret = b_isteq(buf, 0, b_data(buf), ist(H2_CONN_PREFACE));
928 if (ret > 0)
929 goto h2c_upgrade;
930 }
931
Christopher Fauletf2824e62018-10-01 12:12:37 +0200932 ret = h1_headers_to_hdr_list(b_peek(buf, *ofs), b_peek(buf, *ofs) + max,
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100933 hdrs, sizeof(hdrs)/sizeof(hdrs[0]), h1m, &h1sl);
Christopher Faulet129817b2018-09-20 16:14:40 +0200934 if (ret <= 0) {
935 /* Incomplete or invalid message. If the buffer is full, it's an
936 * error because headers are too large to be handled by the
937 * parser. */
Christopher Fauletf2824e62018-10-01 12:12:37 +0200938 if (ret < 0 || (!ret && b_full(buf)))
939 goto error;
Christopher Faulet129817b2018-09-20 16:14:40 +0200940 goto end;
941 }
942
943 /* messages headers fully parsed, do some checks to prepare the body
944 * parsing.
945 */
946
947 /* Be sure to keep some space to do headers rewritting */
Christopher Fauletf2824e62018-10-01 12:12:37 +0200948 if (ret > (b_size(buf) - global.tune.maxrewrite))
949 goto error;
Christopher Faulet129817b2018-09-20 16:14:40 +0200950
Christopher Faulet9768c262018-10-22 09:34:31 +0200951 /* Save the request's method or the response's status, check if the body
952 * length is known and check the VSN validity */
Christopher Faulet129817b2018-09-20 16:14:40 +0200953 if (!(h1m->flags & H1_MF_RESP)) {
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100954 h1s->meth = h1sl.rq.meth;
Christopher Faulet9768c262018-10-22 09:34:31 +0200955
Christopher Fauletc62c2b92019-03-28 11:41:39 +0100956 /* By default, request have always a known length */
Christopher Faulet129817b2018-09-20 16:14:40 +0200957 h1m->flags |= H1_MF_XFER_LEN;
Christopher Fauletc62c2b92019-03-28 11:41:39 +0100958
959 if (h1s->meth == HTTP_METH_CONNECT) {
960 /* Switch CONNECT requests to tunnel mode */
961 h1_set_req_tunnel_mode(h1s);
962 }
963 else if (!(h1m->flags & H1_MF_CHNK) && !h1m->body_len) {
964 /* Switch requests with no body to done. */
Christopher Faulet129817b2018-09-20 16:14:40 +0200965 h1m->state = H1_MSG_DONE;
Christopher Fauletc62c2b92019-03-28 11:41:39 +0100966 }
Christopher Faulet9768c262018-10-22 09:34:31 +0200967
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100968 if (!h1_process_req_vsn(h1s, h1m, h1sl)) {
969 h1m->err_pos = h1sl.rq.v.ptr - b_head(buf);
Christopher Faulet9768c262018-10-22 09:34:31 +0200970 h1m->err_state = h1m->state;
971 goto vsn_error;
972 }
Christopher Faulet129817b2018-09-20 16:14:40 +0200973 }
974 else {
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100975 h1s->status = h1sl.st.status;
Christopher Faulet129817b2018-09-20 16:14:40 +0200976
Christopher Fauletc62c2b92019-03-28 11:41:39 +0100977 if ((h1s->meth == HTTP_METH_CONNECT && h1s->status == 200) ||
978 h1s->status == 101) {
979 /* Switch successfull replies to CONNECT requests and
980 * protocol switching to tunnel mode. */
981 h1_set_res_tunnel_mode(h1s);
982 }
983 else if ((h1s->meth == HTTP_METH_HEAD) ||
984 (h1s->status >= 100 && h1s->status < 200) ||
985 (h1s->status == 204) || (h1s->status == 304)) {
986 /* Switch responses without body to done. */
Christopher Faulet129817b2018-09-20 16:14:40 +0200987 h1m->flags &= ~(H1_MF_CLEN|H1_MF_CHNK);
988 h1m->flags |= H1_MF_XFER_LEN;
989 h1m->curr_len = h1m->body_len = 0;
990 h1m->state = H1_MSG_DONE;
991 }
992 else if (h1m->flags & (H1_MF_CLEN|H1_MF_CHNK)) {
Christopher Fauletc62c2b92019-03-28 11:41:39 +0100993 /* Responses with a known body length. Switch requests
994 * with no body to done. */
Christopher Faulet129817b2018-09-20 16:14:40 +0200995 h1m->flags |= H1_MF_XFER_LEN;
996 if ((h1m->flags & H1_MF_CLEN) && !h1m->body_len)
997 h1m->state = H1_MSG_DONE;
998 }
Christopher Fauletc62c2b92019-03-28 11:41:39 +0100999 else {
1000 /* Responses with an unknown body length */
Christopher Faulet129817b2018-09-20 16:14:40 +02001001 h1m->state = H1_MSG_TUNNEL;
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001002 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001003
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001004 if (!h1_process_res_vsn(h1s, h1m, h1sl)) {
1005 h1m->err_pos = h1sl.st.v.ptr - b_head(buf);
Christopher Faulet9768c262018-10-22 09:34:31 +02001006 h1m->err_state = h1m->state;
1007 goto vsn_error;
1008 }
Christopher Faulet129817b2018-09-20 16:14:40 +02001009 }
1010
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001011 /* Set HTX start-line flags */
1012 if (h1m->flags & H1_MF_VER_11)
1013 flags |= HTX_SL_F_VER_11;
1014 if (h1m->flags & H1_MF_XFER_ENC)
1015 flags |= HTX_SL_F_XFER_ENC;
1016 if (h1m->flags & H1_MF_XFER_LEN) {
1017 flags |= HTX_SL_F_XFER_LEN;
1018 if (h1m->flags & H1_MF_CHNK)
1019 flags |= HTX_SL_F_CHNK;
1020 else if (h1m->flags & H1_MF_CLEN)
1021 flags |= HTX_SL_F_CLEN;
Christopher Fauletb2db4fa2018-11-27 16:51:09 +01001022 if (h1m->state == H1_MSG_DONE)
1023 flags |= HTX_SL_F_BODYLESS;
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001024 }
1025
Christopher Faulet9768c262018-10-22 09:34:31 +02001026 if (!(h1m->flags & H1_MF_RESP)) {
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001027 struct htx_sl *sl;
1028
1029 sl = htx_add_stline(htx, HTX_BLK_REQ_SL, flags, h1sl.rq.m, h1sl.rq.u, h1sl.rq.v);
1030 if (!sl || !htx_add_all_headers(htx, hdrs))
Christopher Faulet9768c262018-10-22 09:34:31 +02001031 goto error;
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001032 sl->info.req.meth = h1s->meth;
Christopher Fauletf2824e62018-10-01 12:12:37 +02001033 }
1034 else {
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001035 struct htx_sl *sl;
1036
1037 flags |= HTX_SL_F_IS_RESP;
1038 sl = htx_add_stline(htx, HTX_BLK_RES_SL, flags, h1sl.st.v, h1sl.st.c, h1sl.st.r);
1039 if (!sl || !htx_add_all_headers(htx, hdrs))
Christopher Faulet9768c262018-10-22 09:34:31 +02001040 goto error;
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001041 sl->info.res.status = h1s->status;
Christopher Fauletf2824e62018-10-01 12:12:37 +02001042 }
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001043
Christopher Fauletdbe2cb42019-03-22 14:09:41 +01001044 if (h1m->state == H1_MSG_DONE) {
Christopher Faulet9768c262018-10-22 09:34:31 +02001045 if (!htx_add_endof(htx, HTX_BLK_EOM))
1046 goto error;
Christopher Fauletdbe2cb42019-03-22 14:09:41 +01001047 h1s->cs->flags |= CS_FL_EOI;
1048 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001049
Christopher Fauletb992af02019-03-28 15:42:24 +01001050 h1_process_input_conn_mode(h1s, h1m, htx);
Christopher Faulet9768c262018-10-22 09:34:31 +02001051
1052 /* If body length cannot be determined, set htx->extra to
1053 * ULLONG_MAX. This value is impossible in other cases.
1054 */
1055 htx->extra = ((h1m->flags & H1_MF_XFER_LEN) ? h1m->curr_len : ULLONG_MAX);
1056
1057 /* Recheck there is enough space to do headers rewritting */
1058 if (htx_used_space(htx) > b_size(buf) - global.tune.maxrewrite)
1059 goto error;
1060
1061 *ofs += ret;
Christopher Faulet129817b2018-09-20 16:14:40 +02001062 end:
1063 return ret;
Christopher Fauletf2824e62018-10-01 12:12:37 +02001064
1065 error:
Christopher Fauletf2824e62018-10-01 12:12:37 +02001066 h1m->err_state = h1m->state;
1067 h1m->err_pos = h1m->next;
Christopher Faulet9768c262018-10-22 09:34:31 +02001068 vsn_error:
1069 h1s->flags |= (!(h1m->flags & H1_MF_RESP) ? H1S_F_REQ_ERROR : H1S_F_RES_ERROR);
Christopher Faulete44769b2018-11-29 23:01:45 +01001070 h1_capture_bad_message(h1s->h1c, h1s, h1m, buf);
Christopher Fauletf2824e62018-10-01 12:12:37 +02001071 ret = 0;
1072 goto end;
Christopher Faulet0ef372a2019-04-08 10:57:20 +02001073
1074 h2c_upgrade:
1075 h1s->h1c->flags |= H1C_F_UPG_H2C;
1076 h1s->cs->flags |= CS_FL_REOS;
1077 htx->flags |= HTX_FL_UPGRADE;
1078 ret = 0;
1079 goto end;
Christopher Faulet129817b2018-09-20 16:14:40 +02001080}
1081
1082/*
Christopher Fauletf2824e62018-10-01 12:12:37 +02001083 * Parse HTTP/1 body. It returns the number of bytes parsed if > 0, or 0 if it
1084 * couldn't proceed. Parsing errors are reported by setting H1S_F_*_ERROR flag
Christopher Faulet129817b2018-09-20 16:14:40 +02001085 * and filling h1s->err_pos and h1s->err_state fields. This functions is
Joseph Herlant30bc5092018-11-25 10:52:20 -08001086 * responsible to update the parser state <h1m>.
Christopher Faulet129817b2018-09-20 16:14:40 +02001087 */
Christopher Faulet9768c262018-10-22 09:34:31 +02001088static size_t h1_process_data(struct h1s *h1s, struct h1m *h1m, struct htx *htx,
Christopher Fauletaa75b3d2018-12-05 16:20:40 +01001089 struct buffer *buf, size_t *ofs, size_t max,
Christopher Fauletafe57842019-01-21 11:55:02 +01001090 struct buffer *htxbuf, size_t reserve)
Christopher Faulet129817b2018-09-20 16:14:40 +02001091{
Christopher Fauletafe57842019-01-21 11:55:02 +01001092 uint32_t data_space;
Christopher Faulet129817b2018-09-20 16:14:40 +02001093 size_t total = 0;
1094 int ret = 0;
1095
Christopher Fauletafe57842019-01-21 11:55:02 +01001096 data_space = htx_free_data_space(htx);
1097 if (data_space <= reserve)
1098 goto end;
1099 data_space -= reserve;
1100
Christopher Faulet129817b2018-09-20 16:14:40 +02001101 if (h1m->flags & H1_MF_XFER_LEN) {
1102 if (h1m->flags & H1_MF_CLEN) {
1103 /* content-length: read only h2m->body_len */
1104 ret = max;
Christopher Faulet9768c262018-10-22 09:34:31 +02001105 if (ret > data_space)
1106 ret = data_space;
Christopher Faulet129817b2018-09-20 16:14:40 +02001107 if ((uint64_t)ret > h1m->curr_len)
1108 ret = h1m->curr_len;
Christopher Faulet9768c262018-10-22 09:34:31 +02001109 if (ret > b_contig_data(buf, *ofs))
1110 ret = b_contig_data(buf, *ofs);
1111 if (ret) {
Willy Tarreau78f548f2018-12-05 10:02:39 +01001112 /* very often with large files we'll face the following
1113 * situation :
1114 * - htx is empty and points to <htxbuf>
1115 * - ret == buf->data
1116 * - buf->head == sizeof(struct htx)
1117 * => we can swap the buffers and place an htx header into
1118 * the target buffer instead
1119 */
1120 if (unlikely(htx_is_empty(htx) && ret == b_data(buf) &&
1121 !*ofs && b_head_ofs(buf) == sizeof(struct htx))) {
1122 void *raw_area = buf->area;
1123 void *htx_area = htxbuf->area;
1124 struct htx_blk *blk;
1125
1126 buf->area = htx_area;
1127 htxbuf->area = raw_area;
1128 htx = (struct htx *)htxbuf->area;
1129 htx->size = htxbuf->size - sizeof(*htx);
1130 htx_reset(htx);
1131 b_set_data(htxbuf, b_size(htxbuf));
1132
1133 blk = htx_add_blk(htx, HTX_BLK_DATA, ret);
1134 blk->info += ret;
1135 /* nothing else to do, the old buffer now contains an
1136 * empty pre-initialized HTX header
1137 */
1138 }
1139 else if (!htx_add_data(htx, ist2(b_peek(buf, *ofs), ret)))
Christopher Faulet9768c262018-10-22 09:34:31 +02001140 goto end;
1141 h1m->curr_len -= ret;
1142 *ofs += ret;
1143 total += ret;
1144 }
1145
1146 if (!h1m->curr_len) {
1147 if (!htx_add_endof(htx, HTX_BLK_EOM))
1148 goto end;
Christopher Faulet129817b2018-09-20 16:14:40 +02001149 h1m->state = H1_MSG_DONE;
Christopher Fauletdbe2cb42019-03-22 14:09:41 +01001150 h1s->cs->flags |= CS_FL_EOI;
Christopher Faulet9768c262018-10-22 09:34:31 +02001151 }
Christopher Faulet129817b2018-09-20 16:14:40 +02001152 }
1153 else if (h1m->flags & H1_MF_CHNK) {
1154 new_chunk:
1155 /* te:chunked : parse chunks */
1156 if (h1m->state == H1_MSG_CHUNK_CRLF) {
Christopher Fauletf2824e62018-10-01 12:12:37 +02001157 ret = h1_skip_chunk_crlf(buf, *ofs, *ofs + max);
Christopher Faulet129817b2018-09-20 16:14:40 +02001158 if (ret <= 0)
1159 goto end;
Christopher Faulet9768c262018-10-22 09:34:31 +02001160 h1m->state = H1_MSG_CHUNK_SIZE;
1161
Christopher Faulet129817b2018-09-20 16:14:40 +02001162 max -= ret;
Christopher Fauletf2824e62018-10-01 12:12:37 +02001163 *ofs += ret;
Christopher Faulet129817b2018-09-20 16:14:40 +02001164 total += ret;
Christopher Faulet129817b2018-09-20 16:14:40 +02001165 }
1166
1167 if (h1m->state == H1_MSG_CHUNK_SIZE) {
1168 unsigned int chksz;
1169
Christopher Fauletf2824e62018-10-01 12:12:37 +02001170 ret = h1_parse_chunk_size(buf, *ofs, *ofs + max, &chksz);
Christopher Faulet129817b2018-09-20 16:14:40 +02001171 if (ret <= 0)
1172 goto end;
Christopher Faulet9768c262018-10-22 09:34:31 +02001173 if (!chksz) {
1174 if (!htx_add_endof(htx, HTX_BLK_EOD))
1175 goto end;
Willy Tarreau34d23482019-01-03 17:46:56 +01001176 h1s->flags |= H1S_F_HAVE_I_EOD;
Christopher Faulet9768c262018-10-22 09:34:31 +02001177 h1m->state = H1_MSG_TRAILERS;
1178 }
1179 else
1180 h1m->state = H1_MSG_DATA;
1181
Christopher Faulet129817b2018-09-20 16:14:40 +02001182 h1m->curr_len = chksz;
1183 h1m->body_len += chksz;
1184 max -= ret;
Christopher Fauletf2824e62018-10-01 12:12:37 +02001185 *ofs += ret;
Christopher Faulet129817b2018-09-20 16:14:40 +02001186 total += ret;
Christopher Faulet129817b2018-09-20 16:14:40 +02001187 }
1188
1189 if (h1m->state == H1_MSG_DATA) {
1190 ret = max;
Christopher Faulet9768c262018-10-22 09:34:31 +02001191 if (ret > data_space)
1192 ret = data_space;
Christopher Faulet129817b2018-09-20 16:14:40 +02001193 if ((uint64_t)ret > h1m->curr_len)
1194 ret = h1m->curr_len;
Christopher Faulet9768c262018-10-22 09:34:31 +02001195 if (ret > b_contig_data(buf, *ofs))
1196 ret = b_contig_data(buf, *ofs);
1197 if (ret) {
1198 if (!htx_add_data(htx, ist2(b_peek(buf, *ofs), ret)))
1199 goto end;
1200 h1m->curr_len -= ret;
1201 max -= ret;
1202 *ofs += ret;
1203 total += ret;
1204 }
1205 if (!h1m->curr_len) {
1206 h1m->state = H1_MSG_CHUNK_CRLF;
Christopher Fauletafe57842019-01-21 11:55:02 +01001207 data_space = htx_free_data_space(htx);
1208 if (data_space <= reserve)
1209 goto end;
1210 data_space -= reserve;
Christopher Faulet9768c262018-10-22 09:34:31 +02001211 goto new_chunk;
1212 }
1213 goto end;
Christopher Faulet129817b2018-09-20 16:14:40 +02001214 }
1215
1216 if (h1m->state == H1_MSG_TRAILERS) {
Christopher Faulet17276482018-11-22 11:44:35 +01001217 /* Trailers were alread parsed, only the EOM
1218 * need to be added */
Willy Tarreau34d23482019-01-03 17:46:56 +01001219 if (h1s->flags & H1S_F_HAVE_I_TLR)
Christopher Faulet17276482018-11-22 11:44:35 +01001220 goto skip_tlr_parsing;
1221
Christopher Faulet39593e62019-05-07 10:53:32 +02001222 ret = h1_measure_trailers(buf, *ofs, max);
Christopher Faulet9768c262018-10-22 09:34:31 +02001223 if (ret > data_space)
1224 ret = (htx_is_empty(htx) ? -1 : 0);
Christopher Faulet129817b2018-09-20 16:14:40 +02001225 if (ret <= 0)
1226 goto end;
Christopher Faulet9768c262018-10-22 09:34:31 +02001227
1228 /* Realing input buffer if tailers wrap. For now
1229 * this is a workaroung. Because trailers are
1230 * not split on CRLF, like headers, there is no
1231 * way to know where to split it when trailers
1232 * wrap. This is a limitation of
1233 * h1_measure_trailers.
1234 */
1235 if (b_peek(buf, *ofs) > b_peek(buf, *ofs + ret))
1236 b_slow_realign(buf, trash.area, 0);
1237
1238 if (!htx_add_trailer(htx, ist2(b_peek(buf, *ofs), ret)))
1239 goto end;
Willy Tarreau34d23482019-01-03 17:46:56 +01001240 h1s->flags |= H1S_F_HAVE_I_TLR;
Christopher Faulet129817b2018-09-20 16:14:40 +02001241 max -= ret;
Christopher Fauletf2824e62018-10-01 12:12:37 +02001242 *ofs += ret;
Christopher Faulet129817b2018-09-20 16:14:40 +02001243 total += ret;
Christopher Faulet9768c262018-10-22 09:34:31 +02001244
Christopher Faulet17276482018-11-22 11:44:35 +01001245 skip_tlr_parsing:
Christopher Faulet9768c262018-10-22 09:34:31 +02001246 if (!htx_add_endof(htx, HTX_BLK_EOM))
1247 goto end;
Christopher Faulet129817b2018-09-20 16:14:40 +02001248 h1m->state = H1_MSG_DONE;
Christopher Fauletdbe2cb42019-03-22 14:09:41 +01001249 h1s->cs->flags |= CS_FL_EOI;
Christopher Faulet129817b2018-09-20 16:14:40 +02001250 }
1251 }
1252 else {
1253 /* XFER_LEN is set but not CLEN nor CHNK, it means there
1254 * is no body. Switch the message in DONE state
1255 */
Christopher Faulet9768c262018-10-22 09:34:31 +02001256 if (!htx_add_endof(htx, HTX_BLK_EOM))
1257 goto end;
Christopher Faulet129817b2018-09-20 16:14:40 +02001258 h1m->state = H1_MSG_DONE;
Christopher Fauletdbe2cb42019-03-22 14:09:41 +01001259 h1s->cs->flags |= CS_FL_EOI;
Christopher Faulet129817b2018-09-20 16:14:40 +02001260 }
1261 }
1262 else {
1263 /* no content length, read till SHUTW */
Christopher Faulet9768c262018-10-22 09:34:31 +02001264 ret = max;
1265 if (ret > data_space)
1266 ret = data_space;
1267 if (ret > b_contig_data(buf, *ofs))
1268 ret = b_contig_data(buf, *ofs);
1269 if (ret) {
1270 if (!htx_add_data(htx, ist2(b_peek(buf, *ofs), ret)))
1271 goto end;
1272
Olivier Houchardcf42d5a2018-12-04 17:41:58 +01001273 *ofs += ret;
1274 total = ret;
Christopher Faulet9768c262018-10-22 09:34:31 +02001275 }
Christopher Faulet129817b2018-09-20 16:14:40 +02001276 }
1277
1278 end:
1279 if (ret < 0) {
Christopher Fauletf2824e62018-10-01 12:12:37 +02001280 h1s->flags |= (!(h1m->flags & H1_MF_RESP) ? H1S_F_REQ_ERROR : H1S_F_RES_ERROR);
Christopher Faulet129817b2018-09-20 16:14:40 +02001281 h1m->err_state = h1m->state;
Christopher Fauletf2824e62018-10-01 12:12:37 +02001282 h1m->err_pos = *ofs + max + ret;
Christopher Faulete44769b2018-11-29 23:01:45 +01001283 h1_capture_bad_message(h1s->h1c, h1s, h1m, buf);
Christopher Faulet129817b2018-09-20 16:14:40 +02001284 return 0;
1285 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001286 /* update htx->extra, only when the body length is known */
1287 if (h1m->flags & H1_MF_XFER_LEN)
1288 htx->extra = h1m->curr_len;
Christopher Faulet129817b2018-09-20 16:14:40 +02001289 return total;
1290}
1291
1292/*
Christopher Faulet129817b2018-09-20 16:14:40 +02001293 * Process incoming data. It parses data and transfer them from h1c->ibuf into
Christopher Faulet539e0292018-11-19 10:40:09 +01001294 * <buf>. It returns the number of bytes parsed and transferred if > 0, or 0 if
1295 * it couldn't proceed.
Christopher Faulet129817b2018-09-20 16:14:40 +02001296 */
Christopher Faulet539e0292018-11-19 10:40:09 +01001297static size_t h1_process_input(struct h1c *h1c, struct buffer *buf, int flags)
Christopher Faulet51dbc942018-09-13 09:05:15 +02001298{
Christopher Faulet539e0292018-11-19 10:40:09 +01001299 struct h1s *h1s = h1c->h1s;
Christopher Faulet129817b2018-09-20 16:14:40 +02001300 struct h1m *h1m;
Christopher Faulet9768c262018-10-22 09:34:31 +02001301 struct htx *htx;
Christopher Fauletb8d2ee02019-02-25 15:29:51 +01001302 size_t data = 0;
Christopher Faulet129817b2018-09-20 16:14:40 +02001303 size_t total = 0;
1304 size_t ret = 0;
Christopher Fauletafe57842019-01-21 11:55:02 +01001305 size_t count, rsv;
Christopher Fauletf2824e62018-10-01 12:12:37 +02001306 int errflag;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001307
Christopher Faulet539e0292018-11-19 10:40:09 +01001308 htx = htx_from_buf(buf);
Willy Tarreau3a6190f2018-12-16 08:29:56 +01001309
Christopher Fauletf2824e62018-10-01 12:12:37 +02001310 if (!conn_is_back(h1c->conn)) {
1311 h1m = &h1s->req;
1312 errflag = H1S_F_REQ_ERROR;
1313 }
1314 else {
1315 h1m = &h1s->res;
1316 errflag = H1S_F_RES_ERROR;
1317 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001318
Christopher Faulet74027762019-02-26 14:45:05 +01001319 data = htx->data;
1320 count = b_data(&h1c->ibuf);
Christopher Faulet74027762019-02-26 14:45:05 +01001321 rsv = ((flags & CO_RFL_KEEP_RSV) ? global.tune.maxrewrite : 0);
1322
Christopher Fauletcdc90e92019-03-28 13:28:46 +01001323 if (htx_is_empty(htx))
1324 h1_handle_1xx_response(h1s, h1m);
1325
Christopher Fauletd44ad5b2018-11-19 21:52:12 +01001326 do {
Christopher Faulet129817b2018-09-20 16:14:40 +02001327 if (h1m->state <= H1_MSG_LAST_LF) {
Christopher Faulet539e0292018-11-19 10:40:09 +01001328 ret = h1_process_headers(h1s, h1m, htx, &h1c->ibuf, &total, count);
Christopher Faulet129817b2018-09-20 16:14:40 +02001329 if (!ret)
1330 break;
Christopher Faulet129817b2018-09-20 16:14:40 +02001331 }
1332 else if (h1m->state <= H1_MSG_TRAILERS) {
Christopher Fauletafe57842019-01-21 11:55:02 +01001333 ret = h1_process_data(h1s, h1m, htx, &h1c->ibuf, &total, count, buf, rsv);
Willy Tarreau78f548f2018-12-05 10:02:39 +01001334 htx = htx_from_buf(buf);
Christopher Faulet129817b2018-09-20 16:14:40 +02001335 if (!ret)
1336 break;
1337 }
Christopher Fauletcb55f482018-12-10 11:56:47 +01001338 else if (h1m->state == H1_MSG_DONE) {
Christopher Faulet2f320ee2019-04-16 20:26:53 +02001339 if (h1s->req.state < H1_MSG_DONE || h1s->res.state < H1_MSG_DONE)
1340 h1c->flags |= H1C_F_IN_BUSY;
Christopher Fauletf2824e62018-10-01 12:12:37 +02001341 break;
Christopher Fauletcb55f482018-12-10 11:56:47 +01001342 }
Christopher Fauletf2824e62018-10-01 12:12:37 +02001343 else if (h1m->state == H1_MSG_TUNNEL) {
Christopher Fauletafe57842019-01-21 11:55:02 +01001344 ret = h1_process_data(h1s, h1m, htx, &h1c->ibuf, &total, count, buf, rsv);
Willy Tarreau78f548f2018-12-05 10:02:39 +01001345 htx = htx_from_buf(buf);
Christopher Faulet9768c262018-10-22 09:34:31 +02001346 if (!ret)
1347 break;
Christopher Fauletf2824e62018-10-01 12:12:37 +02001348 }
Christopher Faulet129817b2018-09-20 16:14:40 +02001349 else {
Christopher Fauletf2824e62018-10-01 12:12:37 +02001350 h1s->flags |= errflag;
Christopher Faulet129817b2018-09-20 16:14:40 +02001351 break;
1352 }
1353
Christopher Faulet539e0292018-11-19 10:40:09 +01001354 count -= ret;
Christopher Fauletd44ad5b2018-11-19 21:52:12 +01001355 } while (!(h1s->flags & errflag) && count);
Christopher Faulet129817b2018-09-20 16:14:40 +02001356
Christopher Faulet47365272018-10-31 17:40:50 +01001357 if (h1s->flags & errflag)
1358 goto parsing_err;
Christopher Faulet129817b2018-09-20 16:14:40 +02001359
Christopher Faulet539e0292018-11-19 10:40:09 +01001360 b_del(&h1c->ibuf, total);
1361
1362 end:
Christopher Faulet27ba2dc2018-12-05 11:53:24 +01001363 htx_to_buf(htx, buf);
Christopher Fauletb8d2ee02019-02-25 15:29:51 +01001364 data = (htx->data - data);
Willy Tarreau45f2b892018-12-05 07:59:27 +01001365 if (h1c->flags & H1C_F_IN_FULL && buf_room_for_htx_data(&h1c->ibuf)) {
Christopher Faulet539e0292018-11-19 10:40:09 +01001366 h1c->flags &= ~H1C_F_IN_FULL;
1367 tasklet_wakeup(h1c->wait_event.task);
Christopher Faulet47365272018-10-31 17:40:50 +01001368 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02001369
Christopher Fauletcf56b992018-12-11 16:12:31 +01001370 h1s->cs->flags &= ~(CS_FL_RCV_MORE | CS_FL_WANT_ROOM);
1371
Christopher Fauletcdc90e92019-03-28 13:28:46 +01001372 if (!b_data(&h1c->ibuf))
Christopher Faulet539e0292018-11-19 10:40:09 +01001373 h1_release_buf(h1c, &h1c->ibuf);
Christopher Fauletcf56b992018-12-11 16:12:31 +01001374 else if (!htx_is_empty(htx))
1375 h1s->cs->flags |= CS_FL_RCV_MORE | CS_FL_WANT_ROOM;
Christopher Faulet539e0292018-11-19 10:40:09 +01001376
Christopher Fauletf6ce9d62018-12-10 15:30:06 +01001377 if ((h1s->cs->flags & CS_FL_REOS) && (!b_data(&h1c->ibuf) || htx_is_empty(htx))) {
1378 h1s->cs->flags |= CS_FL_EOS;
Christopher Faulet26922382019-03-08 15:13:41 +01001379 if (h1m->state > H1_MSG_LAST_LF && h1m->state < H1_MSG_DONE)
Christopher Fauletb8d2ee02019-02-25 15:29:51 +01001380 h1s->cs->flags |= CS_FL_ERROR;
Christopher Faulet539e0292018-11-19 10:40:09 +01001381 }
Christopher Fauletf6ce9d62018-12-10 15:30:06 +01001382
Christopher Fauletb8d2ee02019-02-25 15:29:51 +01001383 return data;
Christopher Faulet47365272018-10-31 17:40:50 +01001384
1385 parsing_err:
Christopher Faulet47365272018-10-31 17:40:50 +01001386 b_reset(&h1c->ibuf);
Christopher Faulet539e0292018-11-19 10:40:09 +01001387 htx->flags |= HTX_FL_PARSING_ERROR;
Christopher Faulet27ba2dc2018-12-05 11:53:24 +01001388 htx_to_buf(htx, buf);
Christopher Faulet539e0292018-11-19 10:40:09 +01001389 h1s->cs->flags |= CS_FL_EOS;
Christopher Faulet9768c262018-10-22 09:34:31 +02001390 return 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001391}
1392
Christopher Faulet129817b2018-09-20 16:14:40 +02001393/*
1394 * Process outgoing data. It parses data and transfer them from the channel buffer into
1395 * h1c->obuf. It returns the number of bytes parsed and transferred if > 0, or
1396 * 0 if it couldn't proceed.
1397 */
Christopher Faulet51dbc942018-09-13 09:05:15 +02001398static size_t h1_process_output(struct h1c *h1c, struct buffer *buf, size_t count)
1399{
Christopher Faulet129817b2018-09-20 16:14:40 +02001400 struct h1s *h1s = h1c->h1s;
1401 struct h1m *h1m;
Christopher Faulet9768c262018-10-22 09:34:31 +02001402 struct htx *chn_htx;
1403 struct htx_blk *blk;
1404 struct buffer *tmp;
Christopher Faulet129817b2018-09-20 16:14:40 +02001405 size_t total = 0;
Christopher Fauletd1ebb1e2018-11-28 16:32:50 +01001406 int process_conn_mode = 1; /* If still 1 on EOH, process the connection mode */
Christopher Fauletf2824e62018-10-01 12:12:37 +02001407 int errflag;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001408
Christopher Faulet47365272018-10-31 17:40:50 +01001409 if (!count)
1410 goto end;
Willy Tarreau37dd54d2018-12-15 14:48:31 +01001411
Christopher Faulet9768c262018-10-22 09:34:31 +02001412 chn_htx = htx_from_buf(buf);
Willy Tarreau37dd54d2018-12-15 14:48:31 +01001413 if (htx_is_empty(chn_htx))
1414 goto end;
Christopher Faulet9768c262018-10-22 09:34:31 +02001415
Christopher Faulet51dbc942018-09-13 09:05:15 +02001416 if (!h1_get_buf(h1c, &h1c->obuf)) {
1417 h1c->flags |= H1C_F_OUT_ALLOC;
1418 goto end;
1419 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02001420
Christopher Fauletf2824e62018-10-01 12:12:37 +02001421 if (!conn_is_back(h1c->conn)) {
1422 h1m = &h1s->res;
1423 errflag = H1S_F_RES_ERROR;
1424 }
1425 else {
1426 h1m = &h1s->req;
1427 errflag = H1S_F_REQ_ERROR;
1428 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001429
Willy Tarreau37dd54d2018-12-15 14:48:31 +01001430 /* the htx is non-empty thus has at least one block */
Willy Tarreau3815b222018-12-11 19:50:43 +01001431 blk = htx_get_head_blk(chn_htx);
Christopher Faulet9768c262018-10-22 09:34:31 +02001432
1433 tmp = get_trash_chunk();
Willy Tarreauc5efa332018-12-05 11:19:27 +01001434
Willy Tarreau3815b222018-12-11 19:50:43 +01001435 /* Perform some optimizations to reduce the number of buffer copies.
1436 * First, if the mux's buffer is empty and the htx area contains
1437 * exactly one data block of the same size as the requested count,
1438 * then it's possible to simply swap the caller's buffer with the
1439 * mux's output buffer and adjust offsets and length to match the
1440 * entire DATA HTX block in the middle. In this case we perform a
1441 * true zero-copy operation from end-to-end. This is the situation
1442 * that happens all the time with large files. Second, if this is not
1443 * possible, but the mux's output buffer is empty, we still have an
1444 * opportunity to avoid the copy to the intermediary buffer, by making
1445 * the intermediary buffer's area point to the output buffer's area.
1446 * In this case we want to skip the HTX header to make sure that copies
1447 * remain aligned and that this operation remains possible all the
1448 * time. This goes for headers, data blocks and any data extracted from
1449 * the HTX blocks.
Willy Tarreauc5efa332018-12-05 11:19:27 +01001450 */
1451 if (!b_data(&h1c->obuf)) {
Olivier Houchard84cca662018-12-14 16:28:08 +01001452 h1c->obuf.head = sizeof(struct htx) + blk->addr;
Willy Tarreau3815b222018-12-11 19:50:43 +01001453
1454 if (chn_htx->used == 1 &&
Willy Tarreau37dd54d2018-12-15 14:48:31 +01001455 htx_get_blk_type(blk) == HTX_BLK_DATA &&
Willy Tarreau3815b222018-12-11 19:50:43 +01001456 htx_get_blk_value(chn_htx, blk).len == count) {
1457 void *old_area = h1c->obuf.area;
1458
1459 h1c->obuf.area = buf->area;
1460 h1c->obuf.data = count;
1461
1462 buf->area = old_area;
1463 buf->data = buf->head = 0;
Christopher Fauletadb22202018-12-12 10:32:09 +01001464
1465 /* The message is chunked. We need to emit the chunk
1466 * size. We have at least the size of the struct htx to
1467 * write the chunk envelope. It should be enough.
1468 */
1469 if (h1m->flags & H1_MF_CHNK) {
1470 h1_emit_chunk_size(&h1c->obuf, count);
1471 h1_emit_chunk_crlf(&h1c->obuf);
1472 }
1473
Willy Tarreau3815b222018-12-11 19:50:43 +01001474 total += count;
1475 goto out;
1476 }
Willy Tarreauc5efa332018-12-05 11:19:27 +01001477 tmp->area = h1c->obuf.area + h1c->obuf.head;
1478 }
1479
Christopher Faulet9768c262018-10-22 09:34:31 +02001480 tmp->size = b_room(&h1c->obuf);
1481
Christopher Fauletb2e84162018-12-06 11:39:49 +01001482 while (count && !(h1s->flags & errflag) && blk) {
Christopher Faulet570d1612018-11-26 11:13:57 +01001483 struct htx_sl *sl;
Christopher Faulet9768c262018-10-22 09:34:31 +02001484 struct ist n, v;
Christopher Fauletb2e84162018-12-06 11:39:49 +01001485 enum htx_blk_type type = htx_get_blk_type(blk);
Christopher Faulet9768c262018-10-22 09:34:31 +02001486 uint32_t sz = htx_get_blksz(blk);
Christopher Fauletb2e84162018-12-06 11:39:49 +01001487 uint32_t vlen;
Christopher Faulet9768c262018-10-22 09:34:31 +02001488
Christopher Fauletb2e84162018-12-06 11:39:49 +01001489 vlen = sz;
1490 if (vlen > count) {
1491 if (type != HTX_BLK_DATA && type != HTX_BLK_TLR)
1492 goto copy;
1493 vlen = count;
1494 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001495
Christopher Fauletb2e84162018-12-06 11:39:49 +01001496 switch (type) {
Christopher Faulet9768c262018-10-22 09:34:31 +02001497 case HTX_BLK_UNUSED:
Christopher Faulet129817b2018-09-20 16:14:40 +02001498 break;
Christopher Faulet9768c262018-10-22 09:34:31 +02001499
1500 case HTX_BLK_REQ_SL:
Christopher Faulet66229af2018-11-28 16:06:57 +01001501 h1m_init_req(h1m);
Christopher Fauletb992af02019-03-28 15:42:24 +01001502 h1m->flags |= (H1_MF_NO_PHDR|H1_MF_CLEAN_CONN_HDR);
Christopher Faulet9768c262018-10-22 09:34:31 +02001503 sl = htx_get_blk_ptr(chn_htx, blk);
Christopher Faulet570d1612018-11-26 11:13:57 +01001504 h1s->meth = sl->info.req.meth;
Christopher Faulet9768c262018-10-22 09:34:31 +02001505 h1_parse_req_vsn(h1m, sl);
Christopher Fauletc59ff232018-12-03 13:58:44 +01001506 if (!htx_reqline_to_h1(sl, tmp))
Christopher Faulet9768c262018-10-22 09:34:31 +02001507 goto copy;
1508 h1m->flags |= H1_MF_XFER_LEN;
Christopher Faulet1f890dd2019-02-18 10:33:16 +01001509 if (sl->flags & HTX_SL_F_BODYLESS)
1510 h1m->flags |= H1_MF_CLEN;
Christopher Faulet9768c262018-10-22 09:34:31 +02001511 h1m->state = H1_MSG_HDR_FIRST;
Christopher Faulet129817b2018-09-20 16:14:40 +02001512 break;
Christopher Faulet129817b2018-09-20 16:14:40 +02001513
Christopher Faulet9768c262018-10-22 09:34:31 +02001514 case HTX_BLK_RES_SL:
Christopher Faulet66229af2018-11-28 16:06:57 +01001515 h1m_init_res(h1m);
Christopher Fauletb992af02019-03-28 15:42:24 +01001516 h1m->flags |= (H1_MF_NO_PHDR|H1_MF_CLEAN_CONN_HDR);
Christopher Faulet9768c262018-10-22 09:34:31 +02001517 sl = htx_get_blk_ptr(chn_htx, blk);
Christopher Faulet570d1612018-11-26 11:13:57 +01001518 h1s->status = sl->info.res.status;
Christopher Faulet9768c262018-10-22 09:34:31 +02001519 h1_parse_res_vsn(h1m, sl);
Christopher Fauletc59ff232018-12-03 13:58:44 +01001520 if (!htx_stline_to_h1(sl, tmp))
Christopher Faulet9768c262018-10-22 09:34:31 +02001521 goto copy;
Christopher Faulet03599112018-11-27 11:21:21 +01001522 if (sl->flags & HTX_SL_F_XFER_LEN)
Christopher Faulet9768c262018-10-22 09:34:31 +02001523 h1m->flags |= H1_MF_XFER_LEN;
Christopher Fauletd1ebb1e2018-11-28 16:32:50 +01001524 if (sl->info.res.status < 200 &&
1525 (sl->info.res.status == 100 || sl->info.res.status >= 102))
1526 process_conn_mode = 0;
Christopher Faulet9768c262018-10-22 09:34:31 +02001527 h1m->state = H1_MSG_HDR_FIRST;
1528 break;
1529
1530 case HTX_BLK_HDR:
Christopher Faulet9768c262018-10-22 09:34:31 +02001531 h1m->state = H1_MSG_HDR_NAME;
1532 n = htx_get_blk_name(chn_htx, blk);
1533 v = htx_get_blk_value(chn_htx, blk);
1534
1535 if (isteqi(n, ist("transfer-encoding")))
1536 h1_parse_xfer_enc_header(h1m, v);
Willy Tarreau27cd2232019-01-03 21:52:42 +01001537 else if (isteqi(n, ist("content-length"))) {
Christopher Faulet5220ef22019-03-27 15:44:56 +01001538 /* Only skip C-L header with invalid value. */
1539 if (h1_parse_cont_len_header(h1m, &v) < 0)
Willy Tarreau27cd2232019-01-03 21:52:42 +01001540 goto skip_hdr;
1541 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001542 else if (isteqi(n, ist("connection"))) {
Christopher Fauletb992af02019-03-28 15:42:24 +01001543 h1_parse_connection_header(h1m, &v);
Christopher Faulet9768c262018-10-22 09:34:31 +02001544 if (!v.len)
1545 goto skip_hdr;
1546 }
1547
Christopher Fauletc59ff232018-12-03 13:58:44 +01001548 if (!htx_hdr_to_h1(n, v, tmp))
Christopher Faulet9768c262018-10-22 09:34:31 +02001549 goto copy;
1550 skip_hdr:
1551 h1m->state = H1_MSG_HDR_L2_LWS;
1552 break;
1553
1554 case HTX_BLK_PHDR:
1555 /* not implemented yet */
1556 h1m->flags |= errflag;
1557 break;
1558
1559 case HTX_BLK_EOH:
Christopher Fauletde68b132018-12-10 11:21:47 +01001560 if (h1m->state != H1_MSG_LAST_LF && process_conn_mode) {
Christopher Fauletd1ebb1e2018-11-28 16:32:50 +01001561 /* There is no "Connection:" header and
1562 * it the conn_mode must be
1563 * processed. So do it */
1564 n = ist("Connection");
1565 v = ist("");
Christopher Fauletb992af02019-03-28 15:42:24 +01001566 h1_process_output_conn_mode(h1s, h1m, &v);
Christopher Fauletd1ebb1e2018-11-28 16:32:50 +01001567 if (v.len) {
Christopher Fauletc59ff232018-12-03 13:58:44 +01001568 if (!htx_hdr_to_h1(n, v, tmp))
Christopher Fauletd1ebb1e2018-11-28 16:32:50 +01001569 goto copy;
1570 }
Christopher Fauletb992af02019-03-28 15:42:24 +01001571 process_conn_mode = 0;
Christopher Fauletd1ebb1e2018-11-28 16:32:50 +01001572 }
Willy Tarreau4710d202019-01-03 17:39:54 +01001573
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001574 if ((h1s->meth != HTTP_METH_CONNECT &&
1575 (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 +01001576 (H1_MF_VER_11|H1_MF_XFER_LEN)) ||
1577 (h1s->status >= 200 && h1s->status != 204 && h1s->status != 304 &&
1578 h1s->meth != HTTP_METH_HEAD && !(h1s->meth == HTTP_METH_CONNECT && h1s->status == 200) &&
1579 (h1m->flags & (H1_MF_VER_11|H1_MF_RESP|H1_MF_CLEN|H1_MF_CHNK|H1_MF_XFER_LEN)) ==
1580 (H1_MF_VER_11|H1_MF_RESP|H1_MF_XFER_LEN))) {
Willy Tarreau4710d202019-01-03 17:39:54 +01001581 /* chunking needed but header not seen */
1582 if (!chunk_memcat(tmp, "transfer-encoding: chunked\r\n", 28))
1583 goto copy;
1584 h1m->flags |= H1_MF_CHNK;
1585 }
1586
Christopher Faulet9768c262018-10-22 09:34:31 +02001587 h1m->state = H1_MSG_LAST_LF;
1588 if (!chunk_memcat(tmp, "\r\n", 2))
1589 goto copy;
1590
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001591 if (!(h1m->flags & H1_MF_RESP) && h1s->meth == HTTP_METH_CONNECT) {
1592 /* a CONNECT request is sent to the server. Switch it to tunnel mode. */
1593 h1_set_req_tunnel_mode(h1s);
1594 }
1595 else if ((h1s->meth == HTTP_METH_CONNECT && h1s->status == 200) || h1s->status == 101) {
1596 /* a successfull reply to a CONNECT or a protocol switching is sent
1597 * to the client . Switch the response to tunnel mode. */
1598 h1_set_res_tunnel_mode(h1s);
1599 }
1600 else
1601 h1m->state = H1_MSG_DATA;
Christopher Faulet9768c262018-10-22 09:34:31 +02001602 break;
1603
1604 case HTX_BLK_DATA:
1605 v = htx_get_blk_value(chn_htx, blk);
Christopher Fauletb2e84162018-12-06 11:39:49 +01001606 v.len = vlen;
Christopher Fauletc59ff232018-12-03 13:58:44 +01001607 if (!htx_data_to_h1(v, tmp, !!(h1m->flags & H1_MF_CHNK)))
Christopher Faulet9768c262018-10-22 09:34:31 +02001608 goto copy;
1609 break;
1610
1611 case HTX_BLK_EOD:
1612 if (!chunk_memcat(tmp, "0\r\n", 3))
1613 goto copy;
Willy Tarreau34d23482019-01-03 17:46:56 +01001614 h1s->flags |= H1S_F_HAVE_O_EOD;
Christopher Faulet9768c262018-10-22 09:34:31 +02001615 h1m->state = H1_MSG_TRAILERS;
1616 break;
1617
1618 case HTX_BLK_TLR:
Willy Tarreau34d23482019-01-03 17:46:56 +01001619 if (!(h1s->flags & H1S_F_HAVE_O_EOD)) {
Christopher Faulet32188212018-11-20 18:21:43 +01001620 if (!chunk_memcat(tmp, "0\r\n", 3))
1621 goto copy;
Willy Tarreau34d23482019-01-03 17:46:56 +01001622 h1s->flags |= H1S_F_HAVE_O_EOD;
Christopher Faulet32188212018-11-20 18:21:43 +01001623 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001624 v = htx_get_blk_value(chn_htx, blk);
Christopher Fauletb2e84162018-12-06 11:39:49 +01001625 v.len = vlen;
Christopher Fauletc59ff232018-12-03 13:58:44 +01001626 if (!htx_trailer_to_h1(v, tmp))
Christopher Faulet9768c262018-10-22 09:34:31 +02001627 goto copy;
Willy Tarreau34d23482019-01-03 17:46:56 +01001628 h1s->flags |= H1S_F_HAVE_O_TLR;
Christopher Faulet9768c262018-10-22 09:34:31 +02001629 break;
1630
1631 case HTX_BLK_EOM:
Christopher Faulet32188212018-11-20 18:21:43 +01001632 if ((h1m->flags & H1_MF_CHNK)) {
Willy Tarreau34d23482019-01-03 17:46:56 +01001633 if (!(h1s->flags & H1S_F_HAVE_O_EOD)) {
Christopher Faulet32188212018-11-20 18:21:43 +01001634 if (!chunk_memcat(tmp, "0\r\n", 3))
1635 goto copy;
Willy Tarreau34d23482019-01-03 17:46:56 +01001636 h1s->flags |= H1S_F_HAVE_O_EOD;
Christopher Faulet32188212018-11-20 18:21:43 +01001637 }
Willy Tarreau34d23482019-01-03 17:46:56 +01001638 if (!(h1s->flags & H1S_F_HAVE_O_TLR)) {
Christopher Faulet32188212018-11-20 18:21:43 +01001639 if (!chunk_memcat(tmp, "\r\n", 2))
1640 goto copy;
Willy Tarreau34d23482019-01-03 17:46:56 +01001641 h1s->flags |= H1S_F_HAVE_O_TLR;
Christopher Faulet32188212018-11-20 18:21:43 +01001642 }
1643 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001644 h1m->state = H1_MSG_DONE;
1645 break;
1646
1647 case HTX_BLK_OOB:
1648 v = htx_get_blk_value(chn_htx, blk);
1649 if (!chunk_memcat(tmp, v.ptr, v.len))
1650 goto copy;
1651 break;
1652
1653 default:
1654 h1m->flags |= errflag;
1655 break;
1656 }
Christopher Fauletb2e84162018-12-06 11:39:49 +01001657 total += vlen;
1658 count -= vlen;
1659 if (sz == vlen)
1660 blk = htx_remove_blk(chn_htx, blk);
1661 else {
1662 htx_cut_data_blk(chn_htx, blk, vlen);
1663 break;
1664 }
Christopher Faulet129817b2018-09-20 16:14:40 +02001665 }
1666
Christopher Fauletcdc90e92019-03-28 13:28:46 +01001667 if (htx_is_empty(chn_htx))
1668 h1_handle_1xx_response(h1s, h1m);
1669
Christopher Faulet9768c262018-10-22 09:34:31 +02001670 copy:
Willy Tarreauc5efa332018-12-05 11:19:27 +01001671 /* when the output buffer is empty, tmp shares the same area so that we
1672 * only have to update pointers and lengths.
1673 */
Willy Tarreaub57af612019-01-23 20:43:53 +01001674 if (tmp->area == h1c->obuf.area + h1c->obuf.head)
Willy Tarreauc5efa332018-12-05 11:19:27 +01001675 h1c->obuf.data = tmp->data;
1676 else
1677 b_putblk(&h1c->obuf, tmp->area, tmp->data);
Christopher Faulet51dbc942018-09-13 09:05:15 +02001678
Willy Tarreau3815b222018-12-11 19:50:43 +01001679 htx_to_buf(chn_htx, buf);
1680 out:
Willy Tarreau45f2b892018-12-05 07:59:27 +01001681 if (!buf_room_for_htx_data(&h1c->obuf))
Christopher Faulet51dbc942018-09-13 09:05:15 +02001682 h1c->flags |= H1C_F_OUT_FULL;
Christopher Faulet9768c262018-10-22 09:34:31 +02001683 end:
1684 return total;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001685}
1686
Christopher Faulet51dbc942018-09-13 09:05:15 +02001687/*********************************************************/
1688/* functions below are I/O callbacks from the connection */
1689/*********************************************************/
Christopher Faulete17fa2f2018-12-11 16:25:36 +01001690static void h1_wake_stream_for_recv(struct h1s *h1s)
1691{
1692 if (h1s && h1s->recv_wait) {
Willy Tarreau4f6516d2018-12-19 13:59:17 +01001693 h1s->recv_wait->events &= ~SUB_RETRY_RECV;
Christopher Faulete17fa2f2018-12-11 16:25:36 +01001694 tasklet_wakeup(h1s->recv_wait->task);
1695 h1s->recv_wait = NULL;
1696 }
1697}
1698static void h1_wake_stream_for_send(struct h1s *h1s)
1699{
1700 if (h1s && h1s->send_wait) {
Willy Tarreau4f6516d2018-12-19 13:59:17 +01001701 h1s->send_wait->events &= ~SUB_RETRY_SEND;
Christopher Faulete17fa2f2018-12-11 16:25:36 +01001702 tasklet_wakeup(h1s->send_wait->task);
1703 h1s->send_wait = NULL;
1704 }
1705}
1706
Christopher Faulet51dbc942018-09-13 09:05:15 +02001707/*
1708 * Attempt to read data, and subscribe if none available
1709 */
1710static int h1_recv(struct h1c *h1c)
1711{
1712 struct connection *conn = h1c->conn;
Christopher Fauletfeb11742018-11-29 15:12:34 +01001713 struct h1s *h1s = h1c->h1s;
Olivier Houchard75159a92018-12-03 18:46:09 +01001714 size_t ret = 0, max;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001715 int rcvd = 0;
1716
Willy Tarreau4f6516d2018-12-19 13:59:17 +01001717 if (h1c->wait_event.events & SUB_RETRY_RECV)
Christopher Fauletc386a882018-12-04 16:06:28 +01001718 return (b_data(&h1c->ibuf));
Christopher Faulet51dbc942018-09-13 09:05:15 +02001719
Olivier Houchard75159a92018-12-03 18:46:09 +01001720 if (!h1_recv_allowed(h1c)) {
1721 rcvd = 1;
Christopher Faulet9768c262018-10-22 09:34:31 +02001722 goto end;
Olivier Houchard75159a92018-12-03 18:46:09 +01001723 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02001724
Christopher Fauletf7d5ff32019-04-16 13:55:08 +02001725 if (!h1_get_buf(h1c, &h1c->ibuf)) {
1726 h1c->flags |= H1C_F_IN_ALLOC;
Christopher Faulet9768c262018-10-22 09:34:31 +02001727 goto end;
1728 }
Christopher Faulet1be55f92018-10-02 15:59:23 +02001729
Christopher Fauletf7d5ff32019-04-16 13:55:08 +02001730 if (h1s && (h1s->flags & (H1S_F_BUF_FLUSH|H1S_F_SPLICED_DATA))) {
1731 if (!b_data(&h1c->ibuf))
1732 h1_wake_stream_for_recv(h1s);
1733 rcvd = 1;
Christopher Faulet9768c262018-10-22 09:34:31 +02001734 goto end;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001735 }
1736
Olivier Houchard29a22bc2018-12-04 18:16:45 +01001737 /*
1738 * If we only have a small amount of data, realign it,
1739 * it's probably cheaper than doing 2 recv() calls.
1740 */
1741 if (b_data(&h1c->ibuf) > 0 && b_data(&h1c->ibuf) < 128)
1742 b_slow_realign(&h1c->ibuf, trash.area, 0);
1743
Willy Tarreau45f2b892018-12-05 07:59:27 +01001744 max = buf_room_for_htx_data(&h1c->ibuf);
Christopher Faulet51dbc942018-09-13 09:05:15 +02001745 if (max) {
1746 h1c->flags &= ~H1C_F_IN_FULL;
Willy Tarreau78f548f2018-12-05 10:02:39 +01001747
Willy Tarreaue0f24ee2018-12-14 10:51:23 +01001748 b_realign_if_empty(&h1c->ibuf);
Willy Tarreau78f548f2018-12-05 10:02:39 +01001749 if (!b_data(&h1c->ibuf)) {
1750 /* try to pre-align the buffer like the rxbufs will be
1751 * to optimize memory copies.
1752 */
Willy Tarreau78f548f2018-12-05 10:02:39 +01001753 h1c->ibuf.head = sizeof(struct htx);
1754 }
Olivier Houcharde179d0e2019-03-21 18:27:17 +01001755 ret = conn->xprt->rcv_buf(conn, conn->xprt_ctx, &h1c->ibuf, max, 0);
Christopher Faulet51dbc942018-09-13 09:05:15 +02001756 }
Christopher Faulet47365272018-10-31 17:40:50 +01001757 if (ret > 0) {
Christopher Faulet51dbc942018-09-13 09:05:15 +02001758 rcvd = 1;
Christopher Fauletfeb11742018-11-29 15:12:34 +01001759 if (h1s && h1s->cs) {
Christopher Faulet37e36072018-12-04 15:54:12 +01001760 h1s->cs->flags |= (CS_FL_READ_PARTIAL|CS_FL_RCV_MORE);
Christopher Fauletfeb11742018-11-29 15:12:34 +01001761 if (h1s->csinfo.t_idle == -1)
1762 h1s->csinfo.t_idle = tv_ms_elapsed(&h1s->csinfo.tv_create, &now) - h1s->csinfo.t_handshake;
1763 }
Christopher Faulet47365272018-10-31 17:40:50 +01001764 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02001765
Christopher Fauletcf56b992018-12-11 16:12:31 +01001766 if (!h1_recv_allowed(h1c) || !buf_room_for_htx_data(&h1c->ibuf)) {
Christopher Faulet81d48432018-11-19 21:22:43 +01001767 rcvd = 1;
Christopher Fauletcf56b992018-12-11 16:12:31 +01001768 goto end;
1769 }
1770
Olivier Houcharde179d0e2019-03-21 18:27:17 +01001771 conn->xprt->subscribe(conn, conn->xprt_ctx, SUB_RETRY_RECV, &h1c->wait_event);
Christopher Faulet51dbc942018-09-13 09:05:15 +02001772
Christopher Faulet9768c262018-10-22 09:34:31 +02001773 end:
Christopher Faulete17fa2f2018-12-11 16:25:36 +01001774 if (ret > 0 || (conn->flags & CO_FL_ERROR) || conn_xprt_read0_pending(conn))
1775 h1_wake_stream_for_recv(h1s);
Olivier Houchard75159a92018-12-03 18:46:09 +01001776
Christopher Faulete6b39942018-12-07 09:42:49 +01001777 if (conn_xprt_read0_pending(conn) && h1s && h1s->cs)
Christopher Faulet87a8f352019-03-22 14:51:36 +01001778 h1s->cs->flags |= CS_FL_REOS;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001779 if (!b_data(&h1c->ibuf))
1780 h1_release_buf(h1c, &h1c->ibuf);
Willy Tarreau45f2b892018-12-05 07:59:27 +01001781 else if (!buf_room_for_htx_data(&h1c->ibuf))
Christopher Faulet51dbc942018-09-13 09:05:15 +02001782 h1c->flags |= H1C_F_IN_FULL;
1783 return rcvd;
1784}
1785
1786
1787/*
1788 * Try to send data if possible
1789 */
1790static int h1_send(struct h1c *h1c)
1791{
1792 struct connection *conn = h1c->conn;
1793 unsigned int flags = 0;
1794 size_t ret;
1795 int sent = 0;
1796
1797 if (conn->flags & CO_FL_ERROR)
1798 return 0;
1799
Christopher Faulet3b88b8d2018-10-26 17:36:03 +02001800 if (h1c->flags & H1C_F_CS_WAIT_CONN) {
Willy Tarreau4f6516d2018-12-19 13:59:17 +01001801 if (!(h1c->wait_event.events & SUB_RETRY_SEND))
Olivier Houcharde179d0e2019-03-21 18:27:17 +01001802 conn->xprt->subscribe(conn, conn->xprt_ctx, SUB_RETRY_SEND, &h1c->wait_event);
Christopher Faulet3b88b8d2018-10-26 17:36:03 +02001803 return 0;
1804 }
1805
Christopher Faulet51dbc942018-09-13 09:05:15 +02001806 if (!b_data(&h1c->obuf))
1807 goto end;
1808
1809 if (h1c->flags & H1C_F_OUT_FULL)
1810 flags |= CO_SFL_MSG_MORE;
1811
Olivier Houcharde179d0e2019-03-21 18:27:17 +01001812 ret = conn->xprt->snd_buf(conn, conn->xprt_ctx, &h1c->obuf, b_data(&h1c->obuf), flags);
Christopher Faulet51dbc942018-09-13 09:05:15 +02001813 if (ret > 0) {
1814 h1c->flags &= ~H1C_F_OUT_FULL;
1815 b_del(&h1c->obuf, ret);
1816 sent = 1;
1817 }
1818
Christopher Faulet145aa472018-12-06 10:56:20 +01001819 if (conn->flags & (CO_FL_ERROR|CO_FL_SOCK_WR_SH)) {
1820 /* error or output closed, nothing to send, clear the buffer to release it */
1821 b_reset(&h1c->obuf);
1822 }
1823
Christopher Faulet51dbc942018-09-13 09:05:15 +02001824 end:
Christopher Faulete17fa2f2018-12-11 16:25:36 +01001825 if (!(h1c->flags & H1C_F_OUT_FULL))
1826 h1_wake_stream_for_send(h1c->h1s);
Olivier Houchard75159a92018-12-03 18:46:09 +01001827
Christopher Faulet51dbc942018-09-13 09:05:15 +02001828 /* We're done, no more to send */
1829 if (!b_data(&h1c->obuf)) {
1830 h1_release_buf(h1c, &h1c->obuf);
1831 if (h1c->flags & H1C_F_CS_SHUTW_NOW)
Christopher Faulet666a0c42019-01-08 11:12:04 +01001832 h1_shutw_conn(conn, CS_SHW_NORMAL);
Christopher Faulet51dbc942018-09-13 09:05:15 +02001833 }
Willy Tarreau4f6516d2018-12-19 13:59:17 +01001834 else if (!(h1c->wait_event.events & SUB_RETRY_SEND))
Olivier Houcharde179d0e2019-03-21 18:27:17 +01001835 conn->xprt->subscribe(conn, conn->xprt_ctx, SUB_RETRY_SEND, &h1c->wait_event);
Christopher Faulet51dbc942018-09-13 09:05:15 +02001836
1837 return sent;
1838}
1839
Christopher Faulet51dbc942018-09-13 09:05:15 +02001840
1841/* callback called on any event by the connection handler.
1842 * It applies changes and returns zero, or < 0 if it wants immediate
1843 * destruction of the connection.
1844 */
1845static int h1_process(struct h1c * h1c)
1846{
1847 struct connection *conn = h1c->conn;
Christopher Fauletfeb11742018-11-29 15:12:34 +01001848 struct h1s *h1s = h1c->h1s;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001849
Willy Tarreau3d2ee552018-12-19 14:12:10 +01001850 if (!conn->ctx)
Christopher Faulet51dbc942018-09-13 09:05:15 +02001851 return -1;
1852
Christopher Faulet3b88b8d2018-10-26 17:36:03 +02001853 if (h1c->flags & H1C_F_CS_WAIT_CONN) {
Christopher Faulet539e0292018-11-19 10:40:09 +01001854 if (!(conn->flags & (CO_FL_CONNECTED|CO_FL_ERROR)))
1855 goto end;
1856 h1c->flags &= ~H1C_F_CS_WAIT_CONN;
Christopher Fauleta0883e62018-12-11 16:26:50 +01001857 h1_wake_stream_for_send(h1s);
Christopher Faulet3b88b8d2018-10-26 17:36:03 +02001858 }
1859
Christopher Fauletfeb11742018-11-29 15:12:34 +01001860 if (!h1s) {
Christopher Faulet539e0292018-11-19 10:40:09 +01001861 if (h1c->flags & H1C_F_CS_ERROR ||
Olivier Houchard32d75ed2019-01-14 17:27:23 +01001862 conn->flags & (CO_FL_ERROR | CO_FL_SOCK_WR_SH) ||
Christopher Faulet539e0292018-11-19 10:40:09 +01001863 conn_xprt_read0_pending(conn))
1864 goto release;
Christopher Faulet666a0c42019-01-08 11:12:04 +01001865 if (!conn_is_back(conn) && !(h1c->flags & (H1C_F_CS_SHUTW_NOW|H1C_F_CS_SHUTDOWN))) {
Olivier Houchardf502aca2018-12-14 19:42:40 +01001866 if (!h1s_create(h1c, NULL, NULL))
Christopher Faulet539e0292018-11-19 10:40:09 +01001867 goto release;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001868 }
Christopher Faulet1a7ad7a2018-12-04 16:10:44 +01001869 else
Olivier Houcharde7284782018-12-06 18:54:54 +01001870 goto end;
Christopher Fauletfeb11742018-11-29 15:12:34 +01001871 h1s = h1c->h1s;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001872 }
1873
Christopher Fauletfeb11742018-11-29 15:12:34 +01001874 if (b_data(&h1c->ibuf) && h1s->csinfo.t_idle == -1)
1875 h1s->csinfo.t_idle = tv_ms_elapsed(&h1s->csinfo.tv_create, &now) - h1s->csinfo.t_handshake;
1876
Olivier Houchard75159a92018-12-03 18:46:09 +01001877 if (!b_data(&h1c->ibuf) && h1s && h1s->cs && h1s->cs->data_cb->wake &&
1878 (conn_xprt_read0_pending(conn) || h1c->flags & H1C_F_CS_ERROR ||
Olivier Houchard32d75ed2019-01-14 17:27:23 +01001879 conn->flags & (CO_FL_ERROR | CO_FL_SOCK_WR_SH))) {
Olivier Houchard75159a92018-12-03 18:46:09 +01001880 int flags = 0;
1881
1882 if (h1c->flags & H1C_F_CS_ERROR || conn->flags & CO_FL_ERROR)
1883 flags |= CS_FL_ERROR;
1884 if (conn_xprt_read0_pending(conn))
Christopher Faulet87a8f352019-03-22 14:51:36 +01001885 flags |= CS_FL_REOS;
Olivier Houchard75159a92018-12-03 18:46:09 +01001886 h1s->cs->flags |= flags;
1887 h1s->cs->data_cb->wake(h1s->cs);
1888 }
Christopher Faulet47365272018-10-31 17:40:50 +01001889 end:
Christopher Fauletb8093cf2019-01-03 16:27:28 +01001890 if (h1c->task) {
1891 h1c->task->expire = TICK_ETERNITY;
1892 if (b_data(&h1c->obuf)) {
Christopher Faulet666a0c42019-01-08 11:12:04 +01001893 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 +01001894 ? h1c->shut_timeout
1895 : h1c->timeout));
1896 task_queue(h1c->task);
1897 }
1898 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02001899 return 0;
Christopher Faulet539e0292018-11-19 10:40:09 +01001900
1901 release:
Christopher Faulet73c12072019-04-08 11:23:22 +02001902 h1_release(h1c);
Christopher Faulet539e0292018-11-19 10:40:09 +01001903 return -1;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001904}
1905
1906static struct task *h1_io_cb(struct task *t, void *ctx, unsigned short status)
1907{
1908 struct h1c *h1c = ctx;
1909 int ret = 0;
1910
Willy Tarreau4f6516d2018-12-19 13:59:17 +01001911 if (!(h1c->wait_event.events & SUB_RETRY_SEND))
Christopher Faulet51dbc942018-09-13 09:05:15 +02001912 ret = h1_send(h1c);
Willy Tarreau4f6516d2018-12-19 13:59:17 +01001913 if (!(h1c->wait_event.events & SUB_RETRY_RECV))
Christopher Faulet51dbc942018-09-13 09:05:15 +02001914 ret |= h1_recv(h1c);
Christopher Faulet81d48432018-11-19 21:22:43 +01001915 if (ret || !h1c->h1s)
Christopher Faulet51dbc942018-09-13 09:05:15 +02001916 h1_process(h1c);
1917 return NULL;
1918}
1919
Olivier Houchard9a86fcb2018-12-11 16:47:14 +01001920static void h1_reset(struct connection *conn)
1921{
Willy Tarreau3d2ee552018-12-19 14:12:10 +01001922 struct h1c *h1c = conn->ctx;
Olivier Houchard9a86fcb2018-12-11 16:47:14 +01001923
1924 /* Reset the flags, and let the mux know we're waiting for a connection */
1925 h1c->flags = H1C_F_CS_WAIT_CONN;
1926}
Christopher Faulet51dbc942018-09-13 09:05:15 +02001927
1928static int h1_wake(struct connection *conn)
1929{
Willy Tarreau3d2ee552018-12-19 14:12:10 +01001930 struct h1c *h1c = conn->ctx;
Olivier Houchard75159a92018-12-03 18:46:09 +01001931 int ret;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001932
Christopher Faulet539e0292018-11-19 10:40:09 +01001933 h1_send(h1c);
Olivier Houchard75159a92018-12-03 18:46:09 +01001934 ret = h1_process(h1c);
1935 if (ret == 0) {
1936 struct h1s *h1s = h1c->h1s;
1937
1938 if (h1s && h1s->cs && h1s->cs->data_cb->wake)
1939 ret = h1s->cs->data_cb->wake(h1s->cs);
1940 }
1941 return ret;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001942}
1943
Christopher Fauletb8093cf2019-01-03 16:27:28 +01001944/* Connection timeout management. The principle is that if there's no receipt
1945 * nor sending for a certain amount of time, the connection is closed.
1946 */
1947static struct task *h1_timeout_task(struct task *t, void *context, unsigned short state)
1948{
1949 struct h1c *h1c = context;
1950 int expired = tick_is_expired(t->expire, now_ms);
1951
1952 if (!expired && h1c)
1953 return t;
1954
Olivier Houchard3f795f72019-04-17 22:51:06 +02001955 task_destroy(t);
Christopher Fauletb8093cf2019-01-03 16:27:28 +01001956
1957 if (!h1c) {
1958 /* resources were already deleted */
1959 return NULL;
1960 }
1961
1962 h1c->task = NULL;
1963 /* If a stream is still attached to the mux, just set an error and wait
1964 * for the stream's timeout. Otherwise, release the mux. This is only ok
1965 * because same timeouts are used.
1966 */
1967 if (h1c->h1s && h1c->h1s->cs)
1968 h1c->flags |= H1C_F_CS_ERROR;
1969 else
Christopher Faulet73c12072019-04-08 11:23:22 +02001970 h1_release(h1c);
Christopher Fauletb8093cf2019-01-03 16:27:28 +01001971 return NULL;
1972}
1973
Christopher Faulet51dbc942018-09-13 09:05:15 +02001974/*******************************************/
1975/* functions below are used by the streams */
1976/*******************************************/
Christopher Faulet73c12072019-04-08 11:23:22 +02001977
Christopher Faulet51dbc942018-09-13 09:05:15 +02001978/*
1979 * Attach a new stream to a connection
1980 * (Used for outgoing connections)
1981 */
Olivier Houchardf502aca2018-12-14 19:42:40 +01001982static struct conn_stream *h1_attach(struct connection *conn, struct session *sess)
Christopher Faulet51dbc942018-09-13 09:05:15 +02001983{
Willy Tarreau3d2ee552018-12-19 14:12:10 +01001984 struct h1c *h1c = conn->ctx;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001985 struct conn_stream *cs = NULL;
1986 struct h1s *h1s;
1987
1988 if (h1c->flags & H1C_F_CS_ERROR)
1989 goto end;
1990
1991 cs = cs_new(h1c->conn);
1992 if (!cs)
1993 goto end;
1994
Olivier Houchardf502aca2018-12-14 19:42:40 +01001995 h1s = h1s_create(h1c, cs, sess);
Christopher Faulet51dbc942018-09-13 09:05:15 +02001996 if (h1s == NULL)
1997 goto end;
1998
1999 return cs;
2000 end:
2001 cs_free(cs);
2002 return NULL;
2003}
2004
2005/* Retrieves a valid conn_stream from this connection, or returns NULL. For
2006 * this mux, it's easy as we can only store a single conn_stream.
2007 */
2008static const struct conn_stream *h1_get_first_cs(const struct connection *conn)
2009{
Willy Tarreau3d2ee552018-12-19 14:12:10 +01002010 struct h1c *h1c = conn->ctx;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002011 struct h1s *h1s = h1c->h1s;
2012
2013 if (h1s)
2014 return h1s->cs;
2015
2016 return NULL;
2017}
2018
Christopher Faulet73c12072019-04-08 11:23:22 +02002019static void h1_destroy(void *ctx)
Christopher Faulet51dbc942018-09-13 09:05:15 +02002020{
Christopher Faulet73c12072019-04-08 11:23:22 +02002021 struct h1c *h1c = ctx;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002022
Christopher Faulet39a96ee2019-04-08 10:52:21 +02002023 if (!h1c->h1s || !h1c->conn || h1c->conn->ctx != h1c)
Christopher Faulet73c12072019-04-08 11:23:22 +02002024 h1_release(h1c);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002025}
2026
2027/*
2028 * Detach the stream from the connection and possibly release the connection.
2029 */
2030static void h1_detach(struct conn_stream *cs)
2031{
2032 struct h1s *h1s = cs->ctx;
2033 struct h1c *h1c;
Olivier Houchardf502aca2018-12-14 19:42:40 +01002034 struct session *sess;
Olivier Houchard8a786902018-12-15 16:05:40 +01002035 int has_keepalive;
2036 int is_not_first;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002037
2038 cs->ctx = NULL;
2039 if (!h1s)
2040 return;
2041
Olivier Houchardf502aca2018-12-14 19:42:40 +01002042 sess = h1s->sess;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002043 h1c = h1s->h1c;
2044 h1s->cs = NULL;
2045
Olivier Houchard8a786902018-12-15 16:05:40 +01002046 has_keepalive = h1s->flags & H1S_F_WANT_KAL;
2047 is_not_first = h1s->flags & H1S_F_NOT_FIRST;
2048 h1s_destroy(h1s);
2049
2050 if (conn_is_back(h1c->conn) && has_keepalive &&
Olivier Houchard44d59142018-12-13 18:46:22 +01002051 !(h1c->conn->flags & (CO_FL_ERROR | CO_FL_SOCK_RD_SH | CO_FL_SOCK_WR_SH))) {
Christopher Faulet9400a392018-11-23 23:10:39 +01002052 /* Never ever allow to reuse a connection from a non-reuse backend */
Olivier Houchard44d59142018-12-13 18:46:22 +01002053 if ((h1c->px->options & PR_O_REUSE_MASK) == PR_O_REUSE_NEVR)
Christopher Faulet9400a392018-11-23 23:10:39 +01002054 h1c->conn->flags |= CO_FL_PRIVATE;
2055
Olivier Houchard44d59142018-12-13 18:46:22 +01002056 if (!(h1c->conn->owner)) {
Olivier Houchardf502aca2018-12-14 19:42:40 +01002057 h1c->conn->owner = sess;
Olivier Houchard351411f2018-12-27 17:20:54 +01002058 if (!session_add_conn(sess, h1c->conn, h1c->conn->target)) {
2059 h1c->conn->owner = NULL;
2060 if (!srv_add_to_idle_list(objt_server(h1c->conn->target), h1c->conn))
2061 /* The server doesn't want it, let's kill the connection right away */
2062 h1c->conn->mux->destroy(h1c->conn);
2063 else
2064 tasklet_wakeup(h1c->wait_event.task);
2065 return;
2066
2067 }
Olivier Houchard44d59142018-12-13 18:46:22 +01002068 }
Olivier Houcharda4d4fdf2018-12-14 19:27:06 +01002069 if (h1c->conn->owner == sess) {
2070 int ret = session_check_idle_conn(sess, h1c->conn);
2071 if (ret == -1)
2072 /* The connection got destroyed, let's leave */
2073 return;
2074 else if (ret == 1) {
2075 /* The connection was added to the server list,
2076 * wake the task so we can subscribe to events
2077 */
2078 tasklet_wakeup(h1c->wait_event.task);
2079 return;
2080 }
2081 }
Christopher Faulet9400a392018-11-23 23:10:39 +01002082 /* we're in keep-alive with an idle connection, monitor it if not already done */
Olivier Houchard44d59142018-12-13 18:46:22 +01002083 if (LIST_ISEMPTY(&h1c->conn->list)) {
Christopher Faulet9400a392018-11-23 23:10:39 +01002084 struct server *srv = objt_server(h1c->conn->target);
2085
2086 if (srv) {
2087 if (h1c->conn->flags & CO_FL_PRIVATE)
2088 LIST_ADD(&srv->priv_conns[tid], &h1c->conn->list);
Olivier Houchard8a786902018-12-15 16:05:40 +01002089 else if (is_not_first)
Christopher Faulet9400a392018-11-23 23:10:39 +01002090 LIST_ADD(&srv->safe_conns[tid], &h1c->conn->list);
2091 else
2092 LIST_ADD(&srv->idle_conns[tid], &h1c->conn->list);
2093 }
2094 }
2095 }
2096
Christopher Faulet51dbc942018-09-13 09:05:15 +02002097 /* We don't want to close right now unless the connection is in error */
Christopher Faulet0ef372a2019-04-08 10:57:20 +02002098 if ((h1c->flags & (H1C_F_CS_ERROR|H1C_F_CS_SHUTDOWN|H1C_F_UPG_H2C)) ||
Olivier Houchard7ccff1a2018-12-03 16:33:19 +01002099 (h1c->conn->flags & CO_FL_ERROR) || !h1c->conn->owner)
Christopher Faulet73c12072019-04-08 11:23:22 +02002100 h1_release(h1c);
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002101 else {
Christopher Faulet51dbc942018-09-13 09:05:15 +02002102 tasklet_wakeup(h1c->wait_event.task);
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002103 if (h1c->task) {
2104 h1c->task->expire = TICK_ETERNITY;
2105 if (b_data(&h1c->obuf)) {
Christopher Faulet666a0c42019-01-08 11:12:04 +01002106 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 +01002107 ? h1c->shut_timeout
2108 : h1c->timeout));
2109 task_queue(h1c->task);
2110 }
2111 }
2112 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002113}
2114
2115
2116static void h1_shutr(struct conn_stream *cs, enum cs_shr_mode mode)
2117{
2118 struct h1s *h1s = cs->ctx;
Christopher Faulet7f366362019-04-08 10:51:20 +02002119 struct h1c *h1c;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002120
2121 if (!h1s)
2122 return;
Christopher Faulet7f366362019-04-08 10:51:20 +02002123 h1c = h1s->h1c;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002124
Christopher Faulet7f366362019-04-08 10:51:20 +02002125 if ((cs->flags & CS_FL_KILL_CONN) || (h1c->conn->flags & (CO_FL_ERROR | CO_FL_SOCK_RD_SH | CO_FL_SOCK_WR_SH)))
2126 goto do_shutr;
2127
Christopher Faulet0ef372a2019-04-08 10:57:20 +02002128 if ((h1c->flags & H1C_F_UPG_H2C) || (h1s->flags & H1S_F_WANT_KAL))
Christopher Fauletf2824e62018-10-01 12:12:37 +02002129 return;
2130
Christopher Faulet7f366362019-04-08 10:51:20 +02002131 do_shutr:
Christopher Faulet51dbc942018-09-13 09:05:15 +02002132 /* NOTE: Be sure to handle abort (cf. h2_shutr) */
2133 if (cs->flags & CS_FL_SHR)
2134 return;
2135 if (conn_xprt_ready(cs->conn) && cs->conn->xprt->shutr)
Olivier Houcharde179d0e2019-03-21 18:27:17 +01002136 cs->conn->xprt->shutr(cs->conn, cs->conn->xprt_ctx,
2137 (mode == CS_SHR_DRAIN));
Christopher Faulet666a0c42019-01-08 11:12:04 +01002138 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 +02002139 h1c->flags = (h1c->flags & ~H1C_F_CS_SHUTW_NOW) | H1C_F_CS_SHUTDOWN;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002140}
2141
2142static void h1_shutw(struct conn_stream *cs, enum cs_shw_mode mode)
2143{
2144 struct h1s *h1s = cs->ctx;
2145 struct h1c *h1c;
2146
2147 if (!h1s)
2148 return;
2149 h1c = h1s->h1c;
2150
Christopher Faulet7f366362019-04-08 10:51:20 +02002151 if ((cs->flags & CS_FL_KILL_CONN) || (h1c->conn->flags & (CO_FL_ERROR | CO_FL_SOCK_RD_SH | CO_FL_SOCK_WR_SH)))
2152 goto do_shutw;
Olivier Houchardd2e88c72018-12-19 15:55:23 +01002153
Christopher Faulet0ef372a2019-04-08 10:57:20 +02002154 if ((h1c->flags & H1C_F_UPG_H2C) ||
2155 ((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 +02002156 return;
2157
Christopher Faulet7f366362019-04-08 10:51:20 +02002158 do_shutw:
Christopher Faulet51dbc942018-09-13 09:05:15 +02002159 h1c->flags |= H1C_F_CS_SHUTW_NOW;
2160 if ((cs->flags & CS_FL_SHW) || b_data(&h1c->obuf))
2161 return;
2162
Christopher Faulet666a0c42019-01-08 11:12:04 +01002163 h1_shutw_conn(cs->conn, mode);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002164}
2165
Christopher Faulet666a0c42019-01-08 11:12:04 +01002166static void h1_shutw_conn(struct connection *conn, enum cs_shw_mode mode)
Christopher Faulet51dbc942018-09-13 09:05:15 +02002167{
Willy Tarreau3d2ee552018-12-19 14:12:10 +01002168 struct h1c *h1c = conn->ctx;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002169
Christopher Faulet666a0c42019-01-08 11:12:04 +01002170 conn_xprt_shutw(conn);
2171 conn_sock_shutw(conn, (mode == CS_SHW_NORMAL));
2172 if ((conn->flags & (CO_FL_SOCK_RD_SH|CO_FL_SOCK_WR_SH)) == (CO_FL_SOCK_RD_SH|CO_FL_SOCK_WR_SH))
2173 h1c->flags = (h1c->flags & ~H1C_F_CS_SHUTW_NOW) | H1C_F_CS_SHUTDOWN;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002174}
2175
2176/* Called from the upper layer, to unsubscribe to events */
2177static int h1_unsubscribe(struct conn_stream *cs, int event_type, void *param)
2178{
2179 struct wait_event *sw;
2180 struct h1s *h1s = cs->ctx;
2181
2182 if (!h1s)
2183 return 0;
2184
Willy Tarreau4f6516d2018-12-19 13:59:17 +01002185 if (event_type & SUB_RETRY_RECV) {
Christopher Faulet51dbc942018-09-13 09:05:15 +02002186 sw = param;
2187 if (h1s->recv_wait == sw) {
Willy Tarreau4f6516d2018-12-19 13:59:17 +01002188 sw->events &= ~SUB_RETRY_RECV;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002189 h1s->recv_wait = NULL;
2190 }
2191 }
Willy Tarreau4f6516d2018-12-19 13:59:17 +01002192 if (event_type & SUB_RETRY_SEND) {
Christopher Faulet51dbc942018-09-13 09:05:15 +02002193 sw = param;
2194 if (h1s->send_wait == sw) {
Willy Tarreau4f6516d2018-12-19 13:59:17 +01002195 sw->events &= ~SUB_RETRY_SEND;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002196 h1s->send_wait = NULL;
2197 }
2198 }
2199 return 0;
2200}
2201
2202/* Called from the upper layer, to subscribe to events, such as being able to send */
2203static int h1_subscribe(struct conn_stream *cs, int event_type, void *param)
2204{
2205 struct wait_event *sw;
2206 struct h1s *h1s = cs->ctx;
2207
2208 if (!h1s)
2209 return -1;
2210
2211 switch (event_type) {
Willy Tarreau4f6516d2018-12-19 13:59:17 +01002212 case SUB_RETRY_RECV:
Christopher Faulet51dbc942018-09-13 09:05:15 +02002213 sw = param;
Willy Tarreau4f6516d2018-12-19 13:59:17 +01002214 if (!(sw->events & SUB_RETRY_RECV)) {
2215 sw->events |= SUB_RETRY_RECV;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002216 sw->handle = h1s;
2217 h1s->recv_wait = sw;
2218 }
2219 return 0;
Willy Tarreau4f6516d2018-12-19 13:59:17 +01002220 case SUB_RETRY_SEND:
Christopher Faulet51dbc942018-09-13 09:05:15 +02002221 sw = param;
Willy Tarreau4f6516d2018-12-19 13:59:17 +01002222 if (!(sw->events & SUB_RETRY_SEND)) {
2223 sw->events |= SUB_RETRY_SEND;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002224 sw->handle = h1s;
2225 h1s->send_wait = sw;
2226 }
2227 return 0;
2228 default:
2229 break;
2230 }
2231 return -1;
2232}
2233
2234/* Called from the upper layer, to receive data */
2235static size_t h1_rcv_buf(struct conn_stream *cs, struct buffer *buf, size_t count, int flags)
2236{
2237 struct h1s *h1s = cs->ctx;
Christopher Faulet539e0292018-11-19 10:40:09 +01002238 struct h1c *h1c = h1s->h1c;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002239 size_t ret = 0;
2240
Christopher Faulet539e0292018-11-19 10:40:09 +01002241 if (!(h1c->flags & H1C_F_IN_ALLOC))
2242 ret = h1_process_input(h1c, buf, flags);
Christopher Faulet1be55f92018-10-02 15:59:23 +02002243
Christopher Faulete18777b2019-04-16 16:46:36 +02002244 if (flags & CO_RFL_BUF_FLUSH) {
2245 struct h1m *h1m = (!conn_is_back(cs->conn) ? &h1s->req : &h1s->res);
2246
2247 if (h1m->state != H1_MSG_TUNNEL || (h1m->state == H1_MSG_DATA && h1m->curr_len))
2248 h1s->flags |= H1S_F_BUF_FLUSH;
2249 }
Christopher Fauletd44ad5b2018-11-19 21:52:12 +01002250 else if (ret > 0 || (h1s->flags & H1S_F_SPLICED_DATA)) {
2251 h1s->flags &= ~H1S_F_SPLICED_DATA;
Willy Tarreau4f6516d2018-12-19 13:59:17 +01002252 if (!(h1c->wait_event.events & SUB_RETRY_RECV))
Christopher Faulet539e0292018-11-19 10:40:09 +01002253 tasklet_wakeup(h1c->wait_event.task);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002254 }
2255 return ret;
2256}
2257
2258
2259/* Called from the upper layer, to send data */
2260static size_t h1_snd_buf(struct conn_stream *cs, struct buffer *buf, size_t count, int flags)
2261{
2262 struct h1s *h1s = cs->ctx;
2263 struct h1c *h1c;
Christopher Faulet5d37dac2018-11-22 10:58:42 +01002264 size_t total = 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002265
2266 if (!h1s)
Christopher Faulet5d37dac2018-11-22 10:58:42 +01002267 return 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002268
2269 h1c = h1s->h1c;
Christopher Faulet3b88b8d2018-10-26 17:36:03 +02002270 if (h1c->flags & H1C_F_CS_WAIT_CONN)
2271 return 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002272
Christopher Faulet5d37dac2018-11-22 10:58:42 +01002273 while (total != count) {
2274 size_t ret = 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002275
Christopher Faulet5d37dac2018-11-22 10:58:42 +01002276 if (!(h1c->flags & (H1C_F_OUT_FULL|H1C_F_OUT_ALLOC)))
2277 ret = h1_process_output(h1c, buf, count);
2278 if (!ret)
2279 break;
2280 total += ret;
2281 if (!h1_send(h1c))
2282 break;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002283 }
Christopher Fauletf96c3222018-11-20 18:38:01 +01002284
Christopher Faulet5d37dac2018-11-22 10:58:42 +01002285 return total;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002286}
2287
Christopher Faulet1be55f92018-10-02 15:59:23 +02002288#if defined(CONFIG_HAP_LINUX_SPLICE)
2289/* Send and get, using splicing */
2290static int h1_rcv_pipe(struct conn_stream *cs, struct pipe *pipe, unsigned int count)
2291{
2292 struct h1s *h1s = cs->ctx;
2293 struct h1m *h1m = (!conn_is_back(cs->conn) ? &h1s->req : &h1s->res);
2294 int ret = 0;
2295
Christopher Faulete18777b2019-04-16 16:46:36 +02002296 if ((h1m->state != H1_MSG_DATA && h1m->state != H1_MSG_TUNNEL) ||
2297 (h1m->state == H1_MSG_DATA && !h1m->curr_len)) {
2298 h1s->flags &= ~(H1S_F_BUF_FLUSH|H1S_F_SPLICED_DATA);
Olivier Houcharde179d0e2019-03-21 18:27:17 +01002299 cs->conn->xprt->subscribe(cs->conn, cs->conn->xprt_ctx, SUB_RETRY_RECV, &h1s->h1c->wait_event);
Christopher Faulete18777b2019-04-16 16:46:36 +02002300 goto end;
2301 }
2302
Christopher Fauletd44ad5b2018-11-19 21:52:12 +01002303 if (b_data(&h1s->h1c->ibuf)) {
2304 h1s->flags |= H1S_F_BUF_FLUSH;
Christopher Faulet1be55f92018-10-02 15:59:23 +02002305 goto end;
Christopher Fauletd44ad5b2018-11-19 21:52:12 +01002306 }
2307
2308 h1s->flags &= ~H1S_F_BUF_FLUSH;
2309 h1s->flags |= H1S_F_SPLICED_DATA;
Christopher Faulet1be55f92018-10-02 15:59:23 +02002310 if (h1m->state == H1_MSG_DATA && count > h1m->curr_len)
2311 count = h1m->curr_len;
Olivier Houcharde179d0e2019-03-21 18:27:17 +01002312 ret = cs->conn->xprt->rcv_pipe(cs->conn, cs->conn->xprt_ctx, pipe, count);
Christopher Faulete18777b2019-04-16 16:46:36 +02002313 if (h1m->state == H1_MSG_DATA && ret > 0) {
Christopher Faulet1be55f92018-10-02 15:59:23 +02002314 h1m->curr_len -= ret;
Christopher Faulete18777b2019-04-16 16:46:36 +02002315 if (!h1m->curr_len)
2316 h1s->flags &= ~(H1S_F_BUF_FLUSH|H1S_F_SPLICED_DATA);
2317 }
2318
Christopher Faulet1be55f92018-10-02 15:59:23 +02002319 end:
Christopher Faulet038ad812019-04-17 11:03:22 +02002320 if (conn_xprt_read0_pending(cs->conn)) {
2321 cs->flags |= CS_FL_REOS;
2322 if (!pipe->data)
2323 cs->flags |= CS_FL_EOS;
2324 }
Christopher Faulet1be55f92018-10-02 15:59:23 +02002325 return ret;
Christopher Faulet1be55f92018-10-02 15:59:23 +02002326}
2327
2328static int h1_snd_pipe(struct conn_stream *cs, struct pipe *pipe)
2329{
2330 struct h1s *h1s = cs->ctx;
Christopher Faulet1be55f92018-10-02 15:59:23 +02002331 int ret = 0;
2332
2333 if (b_data(&h1s->h1c->obuf))
2334 goto end;
2335
Olivier Houcharde179d0e2019-03-21 18:27:17 +01002336 ret = cs->conn->xprt->snd_pipe(cs->conn, cs->conn->xprt_ctx, pipe);
Christopher Faulet1be55f92018-10-02 15:59:23 +02002337 end:
Christopher Fauletd44ad5b2018-11-19 21:52:12 +01002338 if (pipe->data) {
Willy Tarreau4f6516d2018-12-19 13:59:17 +01002339 if (!(h1s->h1c->wait_event.events & SUB_RETRY_SEND))
Olivier Houcharde179d0e2019-03-21 18:27:17 +01002340 cs->conn->xprt->subscribe(cs->conn, cs->conn->xprt_ctx, SUB_RETRY_SEND, &h1s->h1c->wait_event);
Christopher Fauletd44ad5b2018-11-19 21:52:12 +01002341 }
Christopher Faulet1be55f92018-10-02 15:59:23 +02002342 return ret;
2343}
2344#endif
2345
Olivier Houcharda8f6b432018-12-21 15:20:29 +01002346/* for debugging with CLI's "show fd" command */
2347static void h1_show_fd(struct buffer *msg, struct connection *conn)
2348{
2349 struct h1c *h1c = conn->ctx;
2350 struct h1s *h1s = h1c->h1s;
2351
Christopher Fauletf376a312019-01-04 15:16:06 +01002352 chunk_appendf(msg, " h1c.flg=0x%x .sub=%d .ibuf=%u@%p+%u/%u .obuf=%u@%p+%u/%u",
2353 h1c->flags, h1c->wait_event.events,
Olivier Houcharda8f6b432018-12-21 15:20:29 +01002354 (unsigned int)b_data(&h1c->ibuf), b_orig(&h1c->ibuf),
2355 (unsigned int)b_head_ofs(&h1c->ibuf), (unsigned int)b_size(&h1c->ibuf),
2356 (unsigned int)b_data(&h1c->obuf), b_orig(&h1c->obuf),
2357 (unsigned int)b_head_ofs(&h1c->obuf), (unsigned int)b_size(&h1c->obuf));
2358
2359 if (h1s) {
2360 char *method;
2361
2362 if (h1s->meth < HTTP_METH_OTHER)
2363 method = http_known_methods[h1s->meth].ptr;
2364 else
2365 method = "UNKNOWN";
2366 chunk_appendf(msg, " h1s=%p h1s.flg=0x%x .req.state=%s .res.state=%s"
2367 " .meth=%s status=%d",
2368 h1s, h1s->flags,
2369 h1m_state_str(h1s->req.state),
2370 h1m_state_str(h1s->res.state), method, h1s->status);
2371 if (h1s->cs)
2372 chunk_appendf(msg, " .cs.flg=0x%08x .cs.data=%p",
2373 h1s->cs->flags, h1s->cs->data);
2374 }
2375}
2376
Christopher Faulet51dbc942018-09-13 09:05:15 +02002377/****************************************/
2378/* MUX initialization and instanciation */
2379/****************************************/
2380
2381/* The mux operations */
Willy Tarreauf77a1582019-01-10 10:00:08 +01002382static const struct mux_ops mux_h1_ops = {
Christopher Faulet51dbc942018-09-13 09:05:15 +02002383 .init = h1_init,
2384 .wake = h1_wake,
2385 .attach = h1_attach,
2386 .get_first_cs = h1_get_first_cs,
Christopher Fauletfeb11742018-11-29 15:12:34 +01002387 .get_cs_info = h1_get_cs_info,
Christopher Faulet51dbc942018-09-13 09:05:15 +02002388 .detach = h1_detach,
2389 .destroy = h1_destroy,
2390 .avail_streams = h1_avail_streams,
Willy Tarreau00f18a32019-01-26 12:19:01 +01002391 .used_streams = h1_used_streams,
Christopher Faulet51dbc942018-09-13 09:05:15 +02002392 .rcv_buf = h1_rcv_buf,
2393 .snd_buf = h1_snd_buf,
Christopher Faulet1be55f92018-10-02 15:59:23 +02002394#if defined(CONFIG_HAP_LINUX_SPLICE)
2395 .rcv_pipe = h1_rcv_pipe,
2396 .snd_pipe = h1_snd_pipe,
2397#endif
Christopher Faulet51dbc942018-09-13 09:05:15 +02002398 .subscribe = h1_subscribe,
2399 .unsubscribe = h1_unsubscribe,
2400 .shutr = h1_shutr,
2401 .shutw = h1_shutw,
Olivier Houcharda8f6b432018-12-21 15:20:29 +01002402 .show_fd = h1_show_fd,
Olivier Houchard9a86fcb2018-12-11 16:47:14 +01002403 .reset = h1_reset,
Christopher Faulet9f38f5a2019-04-03 09:53:32 +02002404 .flags = MX_FL_HTX,
Christopher Faulet51dbc942018-09-13 09:05:15 +02002405 .name = "h1",
2406};
2407
2408
2409/* this mux registers default HTX proto */
2410static struct mux_proto_list mux_proto_htx =
2411{ .token = IST(""), .mode = PROTO_MODE_HTX, .side = PROTO_SIDE_BOTH, .mux = &mux_h1_ops };
2412
Willy Tarreau0108d902018-11-25 19:14:37 +01002413INITCALL1(STG_REGISTER, register_mux_proto, &mux_proto_htx);
2414
Christopher Faulet51dbc942018-09-13 09:05:15 +02002415/*
2416 * Local variables:
2417 * c-indent-level: 8
2418 * c-basic-offset: 8
2419 * End:
2420 */