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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 */
Willy Tarreau4c7e4b72020-05-27 12:58:42 +020012#include <haproxy/api.h>
Christopher Faulet51dbc942018-09-13 09:05:15 +020013#include <common/cfgparse.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>
Christopher Faulet51dbc942018-09-13 09:05:15 +020017
Willy Tarreau8d2b7772020-05-27 10:58:19 +020018#include <import/ebistree.h>
Christopher Faulet98fbe952019-07-22 16:18:24 +020019
Christopher Faulet1be55f92018-10-02 15:59:23 +020020#include <types/pipe.h>
Christopher Fauletf2824e62018-10-01 12:12:37 +020021#include <types/proxy.h>
22#include <types/session.h>
23
Christopher Faulet51dbc942018-09-13 09:05:15 +020024#include <proto/connection.h>
Christopher Faulet4f0f88a2019-08-10 11:17:44 +020025#include <proto/h1_htx.h>
Christopher Faulet9768c262018-10-22 09:34:31 +020026#include <proto/http_htx.h>
Christopher Faulet129817b2018-09-20 16:14:40 +020027#include <proto/log.h>
Olivier Houchard44d59142018-12-13 18:46:22 +010028#include <proto/session.h>
Christopher Faulet51dbc942018-09-13 09:05:15 +020029#include <proto/stream.h>
30#include <proto/stream_interface.h>
Christopher Faulet6b81df72019-10-01 22:08:43 +020031#include <proto/trace.h>
Christopher Faulet51dbc942018-09-13 09:05:15 +020032
33/*
34 * H1 Connection flags (32 bits)
35 */
36#define H1C_F_NONE 0x00000000
37
38/* Flags indicating why writing output data are blocked */
39#define H1C_F_OUT_ALLOC 0x00000001 /* mux is blocked on lack of output buffer */
40#define H1C_F_OUT_FULL 0x00000002 /* mux is blocked on output buffer full */
41/* 0x00000004 - 0x00000008 unused */
42
43/* Flags indicating why reading input data are blocked. */
44#define H1C_F_IN_ALLOC 0x00000010 /* mux is blocked on lack of input buffer */
45#define H1C_F_IN_FULL 0x00000020 /* mux is blocked on input buffer full */
Christopher Faulet7b109f22019-12-05 11:18:31 +010046#define H1C_F_IN_BUSY 0x00000040 /* mux is blocked on input waiting the other side */
Christopher Faulet539e0292018-11-19 10:40:09 +010047/* 0x00000040 - 0x00000800 unused */
Christopher Faulet51dbc942018-09-13 09:05:15 +020048
Christopher Faulet7b109f22019-12-05 11:18:31 +010049/* Flags indicating the connection state */
Christopher Faulet51dbc942018-09-13 09:05:15 +020050#define H1C_F_CS_ERROR 0x00001000 /* connection must be closed ASAP because an error occurred */
51#define H1C_F_CS_SHUTW_NOW 0x00002000 /* connection must be shut down for writes ASAP */
Christopher Faulet7b109f22019-12-05 11:18:31 +010052#define H1C_F_CS_SHUTDOWN 0x00004000 /* connection is shut down */
Christopher Fauletaaa67bc2019-12-05 10:23:37 +010053#define H1C_F_CS_IDLE 0x00008000 /* connection is idle and may be reused
54 * (exclusive to all H1C_F_CS flags and never set when an h1s is attached) */
Christopher Faulet51dbc942018-09-13 09:05:15 +020055
Christopher Fauletf2824e62018-10-01 12:12:37 +020056#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 +020057#define H1C_F_UPG_H2C 0x00020000 /* set if an upgrade to h2 should be done */
Christopher Faulet129817b2018-09-20 16:14:40 +020058
Christopher Faulet46230362019-10-17 16:04:20 +020059#define H1C_F_CO_MSG_MORE 0x00040000 /* set if CO_SFL_MSG_MORE must be set when calling xprt->snd_buf() */
60#define H1C_F_CO_STREAMER 0x00080000 /* set if CO_SFL_STREAMER must be set when calling xprt->snd_buf() */
61
Christopher Faulet51dbc942018-09-13 09:05:15 +020062/*
63 * H1 Stream flags (32 bits)
64 */
Christopher Faulet129817b2018-09-20 16:14:40 +020065#define H1S_F_NONE 0x00000000
66#define H1S_F_ERROR 0x00000001 /* An error occurred on the H1 stream */
Christopher Fauletf2824e62018-10-01 12:12:37 +020067#define H1S_F_REQ_ERROR 0x00000002 /* An error occurred during the request parsing/xfer */
68#define H1S_F_RES_ERROR 0x00000004 /* An error occurred during the response parsing/xfer */
Willy Tarreauc493c9c2019-06-03 14:18:22 +020069#define H1S_F_REOS 0x00000008 /* End of input stream seen even if not delivered yet */
Christopher Fauletf2824e62018-10-01 12:12:37 +020070#define H1S_F_WANT_KAL 0x00000010
71#define H1S_F_WANT_TUN 0x00000020
72#define H1S_F_WANT_CLO 0x00000040
73#define H1S_F_WANT_MSK 0x00000070
74#define H1S_F_NOT_FIRST 0x00000080 /* The H1 stream is not the first one */
Christopher Faulet539e0292018-11-19 10:40:09 +010075#define H1S_F_BUF_FLUSH 0x00000100 /* Flush input buffer and don't read more data */
Christopher Fauletd44ad5b2018-11-19 21:52:12 +010076#define H1S_F_SPLICED_DATA 0x00000200 /* Set when the kernel splicing is in used */
Christopher Faulet76014fd2019-12-10 11:47:22 +010077#define H1S_F_PARSING_DONE 0x00000400 /* Set when incoming message parsing is finished (EOM added) */
78/* 0x00000800 .. 0x00001000 unused */
Christopher Faulet72ba6cd2019-09-24 16:20:05 +020079#define H1S_F_HAVE_SRV_NAME 0x00002000 /* Set during output process if the server name header was added to the request */
Christopher Fauletada34b62019-05-24 16:36:43 +020080#define H1S_F_HAVE_O_CONN 0x00004000 /* Set during output process to know connection mode was processed */
Christopher Faulet51dbc942018-09-13 09:05:15 +020081
82/* H1 connection descriptor */
Christopher Faulet51dbc942018-09-13 09:05:15 +020083struct h1c {
84 struct connection *conn;
85 struct proxy *px;
86 uint32_t flags; /* Connection flags: H1C_F_* */
87
88 struct buffer ibuf; /* Input buffer to store data before parsing */
89 struct buffer obuf; /* Output buffer to store data after reformatting */
90
91 struct buffer_wait buf_wait; /* Wait list for buffer allocation */
92 struct wait_event wait_event; /* To be used if we're waiting for I/Os */
93
94 struct h1s *h1s; /* H1 stream descriptor */
Christopher Fauletb8093cf2019-01-03 16:27:28 +010095 struct task *task; /* timeout management task */
96 int timeout; /* idle timeout duration in ticks */
97 int shut_timeout; /* idle timeout duration in ticks after stream shutdown */
Christopher Faulet51dbc942018-09-13 09:05:15 +020098};
99
100/* H1 stream descriptor */
101struct h1s {
102 struct h1c *h1c;
103 struct conn_stream *cs;
Christopher Fauletfeb11742018-11-29 15:12:34 +0100104 struct cs_info csinfo; /* CS info, only used for client connections */
105 uint32_t flags; /* Connection flags: H1S_F_* */
Christopher Faulet51dbc942018-09-13 09:05:15 +0200106
Willy Tarreau1b0d4d12020-01-16 11:03:19 +0100107 struct wait_event *subs; /* Address of the wait_event the conn_stream associated is waiting on */
Christopher Faulet129817b2018-09-20 16:14:40 +0200108
Olivier Houchardf502aca2018-12-14 19:42:40 +0100109 struct session *sess; /* Associated session */
Christopher Faulet129817b2018-09-20 16:14:40 +0200110 struct h1m req;
111 struct h1m res;
112
113 enum http_meth_t meth; /* HTTP resquest method */
114 uint16_t status; /* HTTP response status */
Christopher Faulet51dbc942018-09-13 09:05:15 +0200115};
116
Christopher Faulet98fbe952019-07-22 16:18:24 +0200117/* Map of headers used to convert outgoing headers */
118struct h1_hdrs_map {
119 char *name;
120 struct eb_root map;
121};
122
123/* An entry in a headers map */
124struct h1_hdr_entry {
125 struct ist name;
126 struct ebpt_node node;
127};
128
129/* Declare the headers map */
130static struct h1_hdrs_map hdrs_map = { .name = NULL, .map = EB_ROOT };
131
132
Christopher Faulet6b81df72019-10-01 22:08:43 +0200133/* trace source and events */
134static void h1_trace(enum trace_level level, uint64_t mask,
135 const struct trace_source *src,
136 const struct ist where, const struct ist func,
137 const void *a1, const void *a2, const void *a3, const void *a4);
138
139/* The event representation is split like this :
140 * h1c - internal H1 connection
141 * h1s - internal H1 stream
142 * strm - application layer
143 * rx - data receipt
144 * tx - data transmission
145 *
146 */
147static const struct trace_event h1_trace_events[] = {
148#define H1_EV_H1C_NEW (1ULL << 0)
149 { .mask = H1_EV_H1C_NEW, .name = "h1c_new", .desc = "new H1 connection" },
150#define H1_EV_H1C_RECV (1ULL << 1)
151 { .mask = H1_EV_H1C_RECV, .name = "h1c_recv", .desc = "Rx on H1 connection" },
152#define H1_EV_H1C_SEND (1ULL << 2)
153 { .mask = H1_EV_H1C_SEND, .name = "h1c_send", .desc = "Tx on H1 connection" },
154#define H1_EV_H1C_BLK (1ULL << 3)
155 { .mask = H1_EV_H1C_BLK, .name = "h1c_blk", .desc = "H1 connection blocked" },
156#define H1_EV_H1C_WAKE (1ULL << 4)
157 { .mask = H1_EV_H1C_WAKE, .name = "h1c_wake", .desc = "H1 connection woken up" },
158#define H1_EV_H1C_END (1ULL << 5)
159 { .mask = H1_EV_H1C_END, .name = "h1c_end", .desc = "H1 connection terminated" },
160#define H1_EV_H1C_ERR (1ULL << 6)
161 { .mask = H1_EV_H1C_ERR, .name = "h1c_err", .desc = "error on H1 connection" },
162
163#define H1_EV_RX_DATA (1ULL << 7)
164 { .mask = H1_EV_RX_DATA, .name = "rx_data", .desc = "receipt of any H1 data" },
165#define H1_EV_RX_EOI (1ULL << 8)
166 { .mask = H1_EV_RX_EOI, .name = "rx_eoi", .desc = "receipt of end of H1 input" },
167#define H1_EV_RX_HDRS (1ULL << 9)
168 { .mask = H1_EV_RX_HDRS, .name = "rx_headers", .desc = "receipt of H1 headers" },
169#define H1_EV_RX_BODY (1ULL << 10)
170 { .mask = H1_EV_RX_BODY, .name = "rx_body", .desc = "receipt of H1 body" },
171#define H1_EV_RX_TLRS (1ULL << 11)
172 { .mask = H1_EV_RX_TLRS, .name = "rx_trailerus", .desc = "receipt of H1 trailers" },
173
174#define H1_EV_TX_DATA (1ULL << 12)
175 { .mask = H1_EV_TX_DATA, .name = "tx_data", .desc = "transmission of any H1 data" },
176#define H1_EV_TX_EOI (1ULL << 13)
177 { .mask = H1_EV_TX_EOI, .name = "tx_eoi", .desc = "transmission of end of H1 input" },
178#define H1_EV_TX_HDRS (1ULL << 14)
179 { .mask = H1_EV_TX_HDRS, .name = "tx_headers", .desc = "transmission of all headers" },
180#define H1_EV_TX_BODY (1ULL << 15)
181 { .mask = H1_EV_TX_BODY, .name = "tx_body", .desc = "transmission of H1 body" },
182#define H1_EV_TX_TLRS (1ULL << 16)
183 { .mask = H1_EV_TX_TLRS, .name = "tx_trailerus", .desc = "transmission of H1 trailers" },
184
185#define H1_EV_H1S_NEW (1ULL << 17)
186 { .mask = H1_EV_H1S_NEW, .name = "h1s_new", .desc = "new H1 stream" },
187#define H1_EV_H1S_BLK (1ULL << 18)
188 { .mask = H1_EV_H1S_BLK, .name = "h1s_blk", .desc = "H1 stream blocked" },
189#define H1_EV_H1S_END (1ULL << 19)
190 { .mask = H1_EV_H1S_END, .name = "h1s_end", .desc = "H1 stream terminated" },
191#define H1_EV_H1S_ERR (1ULL << 20)
192 { .mask = H1_EV_H1S_ERR, .name = "h1s_err", .desc = "error on H1 stream" },
193
194#define H1_EV_STRM_NEW (1ULL << 21)
195 { .mask = H1_EV_STRM_NEW, .name = "strm_new", .desc = "app-layer stream creation" },
196#define H1_EV_STRM_RECV (1ULL << 22)
197 { .mask = H1_EV_STRM_RECV, .name = "strm_recv", .desc = "receiving data for stream" },
198#define H1_EV_STRM_SEND (1ULL << 23)
199 { .mask = H1_EV_STRM_SEND, .name = "strm_send", .desc = "sending data for stream" },
200#define H1_EV_STRM_WAKE (1ULL << 24)
201 { .mask = H1_EV_STRM_WAKE, .name = "strm_wake", .desc = "stream woken up" },
202#define H1_EV_STRM_SHUT (1ULL << 25)
203 { .mask = H1_EV_STRM_SHUT, .name = "strm_shut", .desc = "stream shutdown" },
204#define H1_EV_STRM_END (1ULL << 26)
205 { .mask = H1_EV_STRM_END, .name = "strm_end", .desc = "detaching app-layer stream" },
206#define H1_EV_STRM_ERR (1ULL << 27)
207 { .mask = H1_EV_STRM_ERR, .name = "strm_err", .desc = "stream error" },
208
209 { }
210};
211
212static const struct name_desc h1_trace_lockon_args[4] = {
213 /* arg1 */ { /* already used by the connection */ },
214 /* arg2 */ { .name="h1s", .desc="H1 stream" },
215 /* arg3 */ { },
216 /* arg4 */ { }
217};
218
219static const struct name_desc h1_trace_decoding[] = {
220#define H1_VERB_CLEAN 1
221 { .name="clean", .desc="only user-friendly stuff, generally suitable for level \"user\"" },
222#define H1_VERB_MINIMAL 2
223 { .name="minimal", .desc="report only h1c/h1s state and flags, no real decoding" },
224#define H1_VERB_SIMPLE 3
225 { .name="simple", .desc="add request/response status line or htx info when available" },
226#define H1_VERB_ADVANCED 4
227 { .name="advanced", .desc="add header fields or frame decoding when available" },
228#define H1_VERB_COMPLETE 5
229 { .name="complete", .desc="add full data dump when available" },
230 { /* end */ }
231};
232
233static struct trace_source trace_h1 = {
234 .name = IST("h1"),
235 .desc = "HTTP/1 multiplexer",
236 .arg_def = TRC_ARG1_CONN, // TRACE()'s first argument is always a connection
237 .default_cb = h1_trace,
238 .known_events = h1_trace_events,
239 .lockon_args = h1_trace_lockon_args,
240 .decoding = h1_trace_decoding,
241 .report_events = ~0, // report everything by default
242};
243
244#define TRACE_SOURCE &trace_h1
245INITCALL1(STG_REGISTER, trace_register_source, TRACE_SOURCE);
246
Christopher Faulet51dbc942018-09-13 09:05:15 +0200247/* the h1c and h1s pools */
Willy Tarreau8ceae722018-11-26 11:58:30 +0100248DECLARE_STATIC_POOL(pool_head_h1c, "h1c", sizeof(struct h1c));
249DECLARE_STATIC_POOL(pool_head_h1s, "h1s", sizeof(struct h1s));
Christopher Faulet51dbc942018-09-13 09:05:15 +0200250
Christopher Faulet51dbc942018-09-13 09:05:15 +0200251static int h1_recv(struct h1c *h1c);
252static int h1_send(struct h1c *h1c);
253static int h1_process(struct h1c *h1c);
254static struct task *h1_io_cb(struct task *t, void *ctx, unsigned short state);
Christopher Faulet666a0c42019-01-08 11:12:04 +0100255static void h1_shutw_conn(struct connection *conn, enum cs_shw_mode mode);
Christopher Fauletb8093cf2019-01-03 16:27:28 +0100256static struct task *h1_timeout_task(struct task *t, void *context, unsigned short state);
Christopher Faulet660f6f32019-10-04 10:22:47 +0200257static void h1_wake_stream_for_recv(struct h1s *h1s);
258static void h1_wake_stream_for_send(struct h1s *h1s);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200259
Christopher Faulet6b81df72019-10-01 22:08:43 +0200260/* the H1 traces always expect that arg1, if non-null, is of type connection
261 * (from which we can derive h1c), that arg2, if non-null, is of type h1s, and
262 * that arg3, if non-null, is a htx for rx/tx headers.
263 */
264static void h1_trace(enum trace_level level, uint64_t mask, const struct trace_source *src,
265 const struct ist where, const struct ist func,
266 const void *a1, const void *a2, const void *a3, const void *a4)
267{
268 const struct connection *conn = a1;
269 const struct h1c *h1c = conn ? conn->ctx : NULL;
270 const struct h1s *h1s = a2;
271 const struct htx *htx = a3;
272 const size_t *val = a4;
273
274 if (!h1c)
275 h1c = (h1s ? h1s->h1c : NULL);
276
277 if (!h1c || src->verbosity < H1_VERB_CLEAN)
278 return;
279
280 /* Display frontend/backend info by default */
281 chunk_appendf(&trace_buf, " : [%c]", (conn_is_back(h1c->conn) ? 'B' : 'F'));
282
283 /* Display request and response states if h1s is defined */
284 if (h1s)
285 chunk_appendf(&trace_buf, " [%s, %s]",
286 h1m_state_str(h1s->req.state), h1m_state_str(h1s->res.state));
287
288 if (src->verbosity == H1_VERB_CLEAN)
289 return;
290
291 /* Display the value to the 4th argument (level > STATE) */
292 if (src->level > TRACE_LEVEL_STATE && val)
Willy Tarreaue18f53e2019-11-27 15:41:31 +0100293 chunk_appendf(&trace_buf, " - VAL=%lu", (long)*val);
Christopher Faulet6b81df72019-10-01 22:08:43 +0200294
295 /* Display status-line if possible (verbosity > MINIMAL) */
296 if (src->verbosity > H1_VERB_MINIMAL && htx && htx_nbblks(htx)) {
297 const struct htx_blk *blk = htx_get_head_blk(htx);
298 const struct htx_sl *sl = htx_get_blk_ptr(htx, blk);
299 enum htx_blk_type type = htx_get_blk_type(blk);
300
301 if (type == HTX_BLK_REQ_SL || type == HTX_BLK_RES_SL)
302 chunk_appendf(&trace_buf, " - \"%.*s %.*s %.*s\"",
303 HTX_SL_P1_LEN(sl), HTX_SL_P1_PTR(sl),
304 HTX_SL_P2_LEN(sl), HTX_SL_P2_PTR(sl),
305 HTX_SL_P3_LEN(sl), HTX_SL_P3_PTR(sl));
306 }
307
308 /* Display h1c info and, if defined, h1s info (pointer + flags) */
309 chunk_appendf(&trace_buf, " - h1c=%p(0x%08x)", h1c, h1c->flags);
310 if (h1s)
311 chunk_appendf(&trace_buf, " h1s=%p(0x%08x)", h1s, h1s->flags);
312
313 if (src->verbosity == H1_VERB_MINIMAL)
314 return;
315
316 /* Display input and output buffer info (level > USER & verbosity > SIMPLE) */
317 if (src->level > TRACE_LEVEL_USER) {
318 if (src->verbosity == H1_VERB_COMPLETE ||
319 (src->verbosity == H1_VERB_ADVANCED && (mask & (H1_EV_H1C_RECV|H1_EV_STRM_RECV))))
320 chunk_appendf(&trace_buf, " ibuf=%u@%p+%u/%u",
321 (unsigned int)b_data(&h1c->ibuf), b_orig(&h1c->ibuf),
322 (unsigned int)b_head_ofs(&h1c->ibuf), (unsigned int)b_size(&h1c->ibuf));
323 if (src->verbosity == H1_VERB_COMPLETE ||
324 (src->verbosity == H1_VERB_ADVANCED && (mask & (H1_EV_H1C_SEND|H1_EV_STRM_SEND))))
325 chunk_appendf(&trace_buf, " obuf=%u@%p+%u/%u",
326 (unsigned int)b_data(&h1c->obuf), b_orig(&h1c->obuf),
327 (unsigned int)b_head_ofs(&h1c->obuf), (unsigned int)b_size(&h1c->obuf));
328 }
329
330 /* Display htx info if defined (level > USER) */
331 if (src->level > TRACE_LEVEL_USER && htx) {
332 int full = 0;
333
334 /* Full htx info (level > STATE && verbosity > SIMPLE) */
335 if (src->level > TRACE_LEVEL_STATE) {
336 if (src->verbosity == H1_VERB_COMPLETE)
337 full = 1;
338 else if (src->verbosity == H1_VERB_ADVANCED && (mask & (H1_EV_RX_HDRS|H1_EV_TX_HDRS)))
339 full = 1;
340 }
341
342 chunk_memcat(&trace_buf, "\n\t", 2);
343 htx_dump(&trace_buf, htx, full);
344 }
345}
346
347
Christopher Faulet51dbc942018-09-13 09:05:15 +0200348/*****************************************************/
349/* functions below are for dynamic buffer management */
350/*****************************************************/
351/*
Christopher Faulet2545a0b2019-12-05 12:30:55 +0100352 * Indicates whether or not we may receive data. The rules are the following :
353 * - if an error or a shutdown for reads was detected on the connection we
354 must not attempt to receive
355 * - if the input buffer failed to be allocated or is full , we must not try
356 * to receive
357 * - if he input processing is busy waiting for the output side, we may
Ilya Shipitsinc02a23f2020-05-06 00:53:22 +0500358 * attempt to receive
Christopher Faulet51dbc942018-09-13 09:05:15 +0200359 * - otherwise must may not attempt to receive
360 */
361static inline int h1_recv_allowed(const struct h1c *h1c)
362{
Christopher Faulet2545a0b2019-12-05 12:30:55 +0100363 if (h1c->flags & H1C_F_CS_ERROR) {
364 TRACE_DEVEL("recv not allowed because of error on h1c", H1_EV_H1C_RECV|H1_EV_H1C_BLK, h1c->conn);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200365 return 0;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200366 }
Christopher Faulet51dbc942018-09-13 09:05:15 +0200367
Christopher Faulet2545a0b2019-12-05 12:30:55 +0100368 if (h1c->conn->flags & (CO_FL_ERROR|CO_FL_SOCK_RD_SH)) {
Christopher Faulet6b81df72019-10-01 22:08:43 +0200369 TRACE_DEVEL("recv not allowed because of (error|read0) on connection", H1_EV_H1C_RECV|H1_EV_H1C_BLK, h1c->conn);
Christopher Fauletcf56b992018-12-11 16:12:31 +0100370 return 0;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200371 }
Christopher Fauletcf56b992018-12-11 16:12:31 +0100372
Christopher Fauletcb55f482018-12-10 11:56:47 +0100373 if (!(h1c->flags & (H1C_F_IN_ALLOC|H1C_F_IN_FULL|H1C_F_IN_BUSY)))
Christopher Faulet51dbc942018-09-13 09:05:15 +0200374 return 1;
375
Christopher Faulet6b81df72019-10-01 22:08:43 +0200376 TRACE_DEVEL("recv not allowed because input is blocked", H1_EV_H1C_RECV|H1_EV_H1C_BLK, h1c->conn);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200377 return 0;
378}
379
380/*
381 * Tries to grab a buffer and to re-enables processing on mux <target>. The h1
382 * flags are used to figure what buffer was requested. It returns 1 if the
383 * allocation succeeds, in which case the connection is woken up, or 0 if it's
384 * impossible to wake up and we prefer to be woken up later.
385 */
386static int h1_buf_available(void *target)
387{
388 struct h1c *h1c = target;
389
390 if ((h1c->flags & H1C_F_IN_ALLOC) && b_alloc_margin(&h1c->ibuf, 0)) {
Christopher Faulet6b81df72019-10-01 22:08:43 +0200391 TRACE_STATE("unblocking h1c, ibuf allocated", H1_EV_H1C_RECV|H1_EV_H1C_BLK|H1_EV_H1C_WAKE, h1c->conn);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200392 h1c->flags &= ~H1C_F_IN_ALLOC;
393 if (h1_recv_allowed(h1c))
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200394 tasklet_wakeup(h1c->wait_event.tasklet);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200395 return 1;
396 }
397
398 if ((h1c->flags & H1C_F_OUT_ALLOC) && b_alloc_margin(&h1c->obuf, 0)) {
Christopher Faulet6b81df72019-10-01 22:08:43 +0200399 TRACE_STATE("unblocking h1s, obuf allocated", H1_EV_TX_DATA|H1_EV_H1S_BLK|H1_EV_STRM_WAKE, h1c->conn, h1c->h1s);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200400 h1c->flags &= ~H1C_F_OUT_ALLOC;
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200401 tasklet_wakeup(h1c->wait_event.tasklet);
Christopher Faulet660f6f32019-10-04 10:22:47 +0200402 if (h1c->h1s)
403 h1_wake_stream_for_send(h1c->h1s);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200404 return 1;
405 }
406
Christopher Faulet51dbc942018-09-13 09:05:15 +0200407 return 0;
408}
409
410/*
411 * Allocate a buffer. If if fails, it adds the mux in buffer wait queue.
412 */
413static inline struct buffer *h1_get_buf(struct h1c *h1c, struct buffer *bptr)
414{
415 struct buffer *buf = NULL;
416
Willy Tarreau21046592020-02-26 10:39:36 +0100417 if (likely(!MT_LIST_ADDED(&h1c->buf_wait.list)) &&
Christopher Faulet51dbc942018-09-13 09:05:15 +0200418 unlikely((buf = b_alloc_margin(bptr, 0)) == NULL)) {
419 h1c->buf_wait.target = h1c;
420 h1c->buf_wait.wakeup_cb = h1_buf_available;
Willy Tarreau21046592020-02-26 10:39:36 +0100421 MT_LIST_ADDQ(&buffer_wq, &h1c->buf_wait.list);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200422 }
423 return buf;
424}
425
426/*
427 * Release a buffer, if any, and try to wake up entities waiting in the buffer
428 * wait queue.
429 */
430static inline void h1_release_buf(struct h1c *h1c, struct buffer *bptr)
431{
432 if (bptr->size) {
433 b_free(bptr);
434 offer_buffers(h1c->buf_wait.target, tasks_run_queue);
435 }
436}
437
Christopher Fauletaaa67bc2019-12-05 10:23:37 +0100438/* returns the number of streams in use on a connection to figure if it's idle
439 * or not. We rely on H1C_F_CS_IDLE to know if the connection is in-use or
440 * not. This flag is only set when no H1S is attached and when the previous
441 * stream, if any, was fully terminated without any error and in K/A mode.
Willy Tarreau00f18a32019-01-26 12:19:01 +0100442 */
443static int h1_used_streams(struct connection *conn)
Christopher Faulet51dbc942018-09-13 09:05:15 +0200444{
Willy Tarreau3d2ee552018-12-19 14:12:10 +0100445 struct h1c *h1c = conn->ctx;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200446
Christopher Fauletaaa67bc2019-12-05 10:23:37 +0100447 return ((h1c->flags & H1C_F_CS_IDLE) ? 0 : 1);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200448}
449
Willy Tarreau00f18a32019-01-26 12:19:01 +0100450/* returns the number of streams still available on a connection */
451static int h1_avail_streams(struct connection *conn)
Olivier Houchard8defe4b2018-12-02 01:31:17 +0100452{
Willy Tarreau00f18a32019-01-26 12:19:01 +0100453 return 1 - h1_used_streams(conn);
Olivier Houchard8defe4b2018-12-02 01:31:17 +0100454}
Christopher Faulet51dbc942018-09-13 09:05:15 +0200455
Willy Tarreau00f18a32019-01-26 12:19:01 +0100456
Christopher Faulet51dbc942018-09-13 09:05:15 +0200457/*****************************************************************/
458/* functions below are dedicated to the mux setup and management */
459/*****************************************************************/
Willy Tarreaufbdf90a2019-06-03 13:42:54 +0200460
461/* returns non-zero if there are input data pending for stream h1s. */
462static inline size_t h1s_data_pending(const struct h1s *h1s)
463{
464 const struct h1m *h1m;
465
466 h1m = conn_is_back(h1s->h1c->conn) ? &h1s->res : &h1s->req;
467 if (h1m->state == H1_MSG_DONE)
Christopher Faulet76014fd2019-12-10 11:47:22 +0100468 return !(h1s->flags & H1S_F_PARSING_DONE);
Willy Tarreaufbdf90a2019-06-03 13:42:54 +0200469
470 return b_data(&h1s->h1c->ibuf);
471}
472
Christopher Faulet47365272018-10-31 17:40:50 +0100473static struct conn_stream *h1s_new_cs(struct h1s *h1s)
474{
475 struct conn_stream *cs;
476
Christopher Faulet6b81df72019-10-01 22:08:43 +0200477 TRACE_ENTER(H1_EV_STRM_NEW, h1s->h1c->conn, h1s);
Christopher Faulet47365272018-10-31 17:40:50 +0100478 cs = cs_new(h1s->h1c->conn);
Christopher Faulet6b81df72019-10-01 22:08:43 +0200479 if (!cs) {
480 TRACE_DEVEL("leaving on CS allocation failure", H1_EV_STRM_NEW|H1_EV_STRM_END|H1_EV_STRM_ERR, h1s->h1c->conn, h1s);
Christopher Faulet47365272018-10-31 17:40:50 +0100481 goto err;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200482 }
Christopher Faulet47365272018-10-31 17:40:50 +0100483 h1s->cs = cs;
484 cs->ctx = h1s;
485
486 if (h1s->flags & H1S_F_NOT_FIRST)
487 cs->flags |= CS_FL_NOT_FIRST;
488
Willy Tarreau17ccd1a2020-01-17 16:19:34 +0100489 if (global.tune.options & GTUNE_USE_SPLICE)
490 cs->flags |= CS_FL_MAY_SPLICE;
491
Christopher Faulet6b81df72019-10-01 22:08:43 +0200492 if (stream_create_from_cs(cs) < 0) {
493 TRACE_DEVEL("leaving on stream creation failure", H1_EV_STRM_NEW|H1_EV_STRM_END|H1_EV_STRM_ERR, h1s->h1c->conn, h1s);
Christopher Faulet47365272018-10-31 17:40:50 +0100494 goto err;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200495 }
496
497 TRACE_LEAVE(H1_EV_STRM_NEW, h1s->h1c->conn, h1s);
Christopher Faulet47365272018-10-31 17:40:50 +0100498 return cs;
499
500 err:
501 cs_free(cs);
502 h1s->cs = NULL;
503 return NULL;
504}
505
Olivier Houchardf502aca2018-12-14 19:42:40 +0100506static struct h1s *h1s_create(struct h1c *h1c, struct conn_stream *cs, struct session *sess)
Christopher Faulet51dbc942018-09-13 09:05:15 +0200507{
508 struct h1s *h1s;
509
Christopher Faulet6b81df72019-10-01 22:08:43 +0200510 TRACE_ENTER(H1_EV_H1S_NEW, h1c->conn);
511
Christopher Faulet51dbc942018-09-13 09:05:15 +0200512 h1s = pool_alloc(pool_head_h1s);
513 if (!h1s)
Christopher Faulet47365272018-10-31 17:40:50 +0100514 goto fail;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200515
516 h1s->h1c = h1c;
517 h1c->h1s = h1s;
518
Olivier Houchardf502aca2018-12-14 19:42:40 +0100519 h1s->sess = sess;
520
Christopher Faulet51dbc942018-09-13 09:05:15 +0200521 h1s->cs = NULL;
Christopher Fauletb992af02019-03-28 15:42:24 +0100522 h1s->flags = H1S_F_WANT_KAL;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200523
Willy Tarreau1b0d4d12020-01-16 11:03:19 +0100524 h1s->subs = NULL;
Christopher Faulet129817b2018-09-20 16:14:40 +0200525
526 h1m_init_req(&h1s->req);
Christopher Fauletb992af02019-03-28 15:42:24 +0100527 h1s->req.flags |= (H1_MF_NO_PHDR|H1_MF_CLEAN_CONN_HDR);
Christopher Faulet9768c262018-10-22 09:34:31 +0200528
Christopher Faulet129817b2018-09-20 16:14:40 +0200529 h1m_init_res(&h1s->res);
Christopher Fauletb992af02019-03-28 15:42:24 +0100530 h1s->res.flags |= (H1_MF_NO_PHDR|H1_MF_CLEAN_CONN_HDR);
Christopher Faulet129817b2018-09-20 16:14:40 +0200531
532 h1s->status = 0;
533 h1s->meth = HTTP_METH_OTHER;
534
Christopher Faulet47365272018-10-31 17:40:50 +0100535 if (h1c->flags & H1C_F_WAIT_NEXT_REQ)
536 h1s->flags |= H1S_F_NOT_FIRST;
Christopher Fauletaaa67bc2019-12-05 10:23:37 +0100537 h1c->flags &= ~(H1C_F_CS_IDLE|H1C_F_WAIT_NEXT_REQ);
Christopher Faulet47365272018-10-31 17:40:50 +0100538
Christopher Faulet129817b2018-09-20 16:14:40 +0200539 if (!conn_is_back(h1c->conn)) {
540 if (h1c->px->options2 & PR_O2_REQBUG_OK)
541 h1s->req.err_pos = -1;
Christopher Faulete9b70722019-04-08 10:46:02 +0200542
543 /* For frontend connections we should always have a session */
544 if (!sess)
545 sess = h1c->conn->owner;
546
Dave Pirotte234740f2019-07-10 13:57:38 +0000547 /* Timers for subsequent sessions on the same HTTP 1.x connection
548 * measure from `now`, not from the connection accept time */
549 if (h1s->flags & H1S_F_NOT_FIRST) {
550 h1s->csinfo.create_date = date;
551 h1s->csinfo.tv_create = now;
552 h1s->csinfo.t_handshake = 0;
553 h1s->csinfo.t_idle = -1;
554 }
555 else {
556 h1s->csinfo.create_date = sess->accept_date;
557 h1s->csinfo.tv_create = sess->tv_accept;
558 h1s->csinfo.t_handshake = sess->t_handshake;
559 h1s->csinfo.t_idle = -1;
560 }
Christopher Faulet129817b2018-09-20 16:14:40 +0200561 }
562 else {
563 if (h1c->px->options2 & PR_O2_RSPBUG_OK)
564 h1s->res.err_pos = -1;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200565
Christopher Fauletfeb11742018-11-29 15:12:34 +0100566 h1s->csinfo.create_date = date;
567 h1s->csinfo.tv_create = now;
568 h1s->csinfo.t_handshake = 0;
569 h1s->csinfo.t_idle = -1;
Christopher Faulete9b70722019-04-08 10:46:02 +0200570 }
Christopher Fauletfeb11742018-11-29 15:12:34 +0100571
Christopher Faulete9b70722019-04-08 10:46:02 +0200572 /* If a conn_stream already exists, attach it to this H1S. Otherwise we
573 * create a new one.
574 */
575 if (cs) {
Christopher Fauletf2824e62018-10-01 12:12:37 +0200576 cs->ctx = h1s;
577 h1s->cs = cs;
578 }
Christopher Faulet47365272018-10-31 17:40:50 +0100579 else {
580 cs = h1s_new_cs(h1s);
581 if (!cs)
582 goto fail;
583 }
Christopher Faulet6b81df72019-10-01 22:08:43 +0200584 TRACE_LEAVE(H1_EV_H1S_NEW, h1c->conn, h1s);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200585 return h1s;
Christopher Faulet47365272018-10-31 17:40:50 +0100586
587 fail:
588 pool_free(pool_head_h1s, h1s);
Christopher Faulet6b81df72019-10-01 22:08:43 +0200589 TRACE_DEVEL("leaving in error", H1_EV_H1S_NEW|H1_EV_H1S_END|H1_EV_H1S_ERR, h1c->conn);
Christopher Faulet47365272018-10-31 17:40:50 +0100590 return NULL;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200591}
592
593static void h1s_destroy(struct h1s *h1s)
594{
Christopher Fauletf2824e62018-10-01 12:12:37 +0200595 if (h1s) {
596 struct h1c *h1c = h1s->h1c;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200597
Christopher Faulet6b81df72019-10-01 22:08:43 +0200598 TRACE_POINT(H1_EV_H1S_END, h1c->conn, h1s);
Christopher Fauletf2824e62018-10-01 12:12:37 +0200599 h1c->h1s = NULL;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200600
Willy Tarreau1b0d4d12020-01-16 11:03:19 +0100601 if (h1s->subs)
602 h1s->subs->events = 0;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200603
Christopher Fauletcb55f482018-12-10 11:56:47 +0100604 h1c->flags &= ~H1C_F_IN_BUSY;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200605 if (h1s->flags & (H1S_F_REQ_ERROR|H1S_F_RES_ERROR)) {
Christopher Faulet47365272018-10-31 17:40:50 +0100606 h1c->flags |= H1C_F_CS_ERROR;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200607 TRACE_STATE("h1s on error, set error on h1c", H1_EV_H1C_ERR, h1c->conn, h1s);
608 }
Christopher Fauletaaa67bc2019-12-05 10:23:37 +0100609
610 if (!(h1c->flags & (H1C_F_CS_ERROR|H1C_F_CS_SHUTW_NOW|H1C_F_CS_SHUTDOWN)) && /* No error/shutdown on h1c */
611 !(h1c->conn->flags & (CO_FL_ERROR|CO_FL_SOCK_RD_SH|CO_FL_SOCK_WR_SH)) && /* No error/shutdown on conn */
Christopher Faulet76014fd2019-12-10 11:47:22 +0100612 (h1s->flags & (H1S_F_WANT_KAL|H1S_F_PARSING_DONE)) == (H1S_F_WANT_KAL|H1S_F_PARSING_DONE) && /* K/A possible */
Christopher Fauletaaa67bc2019-12-05 10:23:37 +0100613 h1s->req.state == H1_MSG_DONE && h1s->res.state == H1_MSG_DONE) { /* req/res in DONE state */
614 h1c->flags |= (H1C_F_CS_IDLE|H1C_F_WAIT_NEXT_REQ);
615 TRACE_STATE("set idle mode on h1c, waiting for the next request", H1_EV_H1C_ERR, h1c->conn, h1s);
616 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200617 pool_free(pool_head_h1s, h1s);
618 }
Christopher Faulet51dbc942018-09-13 09:05:15 +0200619}
620
Christopher Fauletfeb11742018-11-29 15:12:34 +0100621static const struct cs_info *h1_get_cs_info(struct conn_stream *cs)
622{
623 struct h1s *h1s = cs->ctx;
624
625 if (h1s && !conn_is_back(cs->conn))
626 return &h1s->csinfo;
627 return NULL;
628}
629
Christopher Faulet51dbc942018-09-13 09:05:15 +0200630/*
Christopher Faulet51f73eb2019-04-08 11:22:47 +0200631 * Initialize the mux once it's attached. It is expected that conn->ctx points
632 * to the existing conn_stream (for outgoing connections or for incoming onces
633 * during a mux upgrade) or NULL (for incoming ones during the connexion
634 * establishment). <input> is always used as Input buffer and may contain
635 * data. It is the caller responsibility to not reuse it anymore. Returns < 0 on
636 * error.
Christopher Faulet51dbc942018-09-13 09:05:15 +0200637 */
Christopher Faulet51f73eb2019-04-08 11:22:47 +0200638static int h1_init(struct connection *conn, struct proxy *proxy, struct session *sess,
639 struct buffer *input)
Christopher Faulet51dbc942018-09-13 09:05:15 +0200640{
Christopher Faulet51dbc942018-09-13 09:05:15 +0200641 struct h1c *h1c;
Christopher Fauletb8093cf2019-01-03 16:27:28 +0100642 struct task *t = NULL;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200643 void *conn_ctx = conn->ctx;
644
645 TRACE_ENTER(H1_EV_H1C_NEW);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200646
647 h1c = pool_alloc(pool_head_h1c);
648 if (!h1c)
649 goto fail_h1c;
650 h1c->conn = conn;
651 h1c->px = proxy;
652
Christopher Fauletaaa67bc2019-12-05 10:23:37 +0100653 h1c->flags = H1C_F_CS_IDLE;
Christopher Faulet51f73eb2019-04-08 11:22:47 +0200654 h1c->ibuf = *input;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200655 h1c->obuf = BUF_NULL;
656 h1c->h1s = NULL;
Christopher Faulet51f73eb2019-04-08 11:22:47 +0200657 h1c->task = NULL;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200658
Willy Tarreau21046592020-02-26 10:39:36 +0100659 MT_LIST_INIT(&h1c->buf_wait.list);
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200660 h1c->wait_event.tasklet = tasklet_new();
661 if (!h1c->wait_event.tasklet)
Christopher Faulet51dbc942018-09-13 09:05:15 +0200662 goto fail;
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200663 h1c->wait_event.tasklet->process = h1_io_cb;
664 h1c->wait_event.tasklet->context = h1c;
Willy Tarreau4f6516d2018-12-19 13:59:17 +0100665 h1c->wait_event.events = 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200666
Christopher Faulete9b70722019-04-08 10:46:02 +0200667 if (conn_is_back(conn)) {
Christopher Fauletb8093cf2019-01-03 16:27:28 +0100668 h1c->shut_timeout = h1c->timeout = proxy->timeout.server;
669 if (tick_isset(proxy->timeout.serverfin))
670 h1c->shut_timeout = proxy->timeout.serverfin;
671 } else {
672 h1c->shut_timeout = h1c->timeout = proxy->timeout.client;
673 if (tick_isset(proxy->timeout.clientfin))
674 h1c->shut_timeout = proxy->timeout.clientfin;
675 }
676 if (tick_isset(h1c->timeout)) {
677 t = task_new(tid_bit);
678 if (!t)
679 goto fail;
680
681 h1c->task = t;
682 t->process = h1_timeout_task;
683 t->context = h1c;
684 t->expire = tick_add(now_ms, h1c->timeout);
685 }
686
Willy Tarreau3d2ee552018-12-19 14:12:10 +0100687 conn->ctx = h1c;
Christopher Faulet129817b2018-09-20 16:14:40 +0200688
Christopher Faulet6b81df72019-10-01 22:08:43 +0200689 /* Always Create a new H1S */
690 if (!h1s_create(h1c, conn_ctx, sess))
691 goto fail;
Christopher Fauletb8093cf2019-01-03 16:27:28 +0100692
693 if (t)
694 task_queue(t);
695
Christopher Faulet51dbc942018-09-13 09:05:15 +0200696 /* Try to read, if nothing is available yet we'll just subscribe */
Willy Tarreau2c1f37d2020-03-04 17:50:02 +0100697 h1c->conn->xprt->subscribe(h1c->conn, h1c->conn->xprt_ctx, SUB_RETRY_RECV, &h1c->wait_event);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200698
699 /* mux->wake will be called soon to complete the operation */
Christopher Faulet6b81df72019-10-01 22:08:43 +0200700 TRACE_LEAVE(H1_EV_H1C_NEW, conn, h1c->h1s);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200701 return 0;
702
703 fail:
Willy Tarreauf6562792019-05-07 19:05:35 +0200704 task_destroy(t);
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200705 if (h1c->wait_event.tasklet)
706 tasklet_free(h1c->wait_event.tasklet);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200707 pool_free(pool_head_h1c, h1c);
708 fail_h1c:
Christopher Faulet6b81df72019-10-01 22:08:43 +0200709 conn->ctx = conn_ctx; // restore saved context
710 TRACE_DEVEL("leaving in error", H1_EV_H1C_NEW|H1_EV_H1C_END|H1_EV_H1C_ERR);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200711 return -1;
712}
713
Christopher Faulet73c12072019-04-08 11:23:22 +0200714/* release function. This one should be called to free all resources allocated
715 * to the mux.
Christopher Faulet51dbc942018-09-13 09:05:15 +0200716 */
Christopher Faulet73c12072019-04-08 11:23:22 +0200717static void h1_release(struct h1c *h1c)
Christopher Faulet51dbc942018-09-13 09:05:15 +0200718{
Christopher Faulet61840e72019-04-15 09:33:32 +0200719 struct connection *conn = NULL;
Christopher Faulet39a96ee2019-04-08 10:52:21 +0200720
Christopher Faulet6b81df72019-10-01 22:08:43 +0200721 TRACE_POINT(H1_EV_H1C_END);
722
Christopher Faulet51dbc942018-09-13 09:05:15 +0200723 if (h1c) {
Christopher Faulet61840e72019-04-15 09:33:32 +0200724 /* The connection must be aattached to this mux to be released */
725 if (h1c->conn && h1c->conn->ctx == h1c)
726 conn = h1c->conn;
727
Christopher Faulet6b81df72019-10-01 22:08:43 +0200728 TRACE_DEVEL("freeing h1c", H1_EV_H1C_END, conn);
729
Christopher Faulet61840e72019-04-15 09:33:32 +0200730 if (conn && h1c->flags & H1C_F_UPG_H2C) {
Christopher Faulet6b81df72019-10-01 22:08:43 +0200731 TRACE_DEVEL("upgrading H1 to H2", H1_EV_H1C_END, conn);
Christopher Faulet0ef372a2019-04-08 10:57:20 +0200732 h1c->flags &= ~H1C_F_UPG_H2C;
Olivier Houchard2ab3dad2019-07-03 13:08:18 +0200733 /* Make sure we're no longer subscribed to anything */
734 if (h1c->wait_event.events)
735 conn->xprt->unsubscribe(conn, conn->xprt_ctx,
736 h1c->wait_event.events, &h1c->wait_event);
Christopher Fauletc985f6c2019-07-15 11:42:52 +0200737 if (conn_upgrade_mux_fe(conn, NULL, &h1c->ibuf, ist("h2"), PROTO_MODE_HTTP) != -1) {
Christopher Faulet0ef372a2019-04-08 10:57:20 +0200738 /* connection successfully upgraded to H2, this
739 * mux was already released */
740 return;
741 }
Christopher Faulet6b81df72019-10-01 22:08:43 +0200742 TRACE_DEVEL("h2 upgrade failed", H1_EV_H1C_END|H1_EV_H1C_ERR, conn);
Christopher Faulet0ef372a2019-04-08 10:57:20 +0200743 sess_log(conn->owner); /* Log if the upgrade failed */
744 }
745
Olivier Houchard45c44372019-06-11 14:06:23 +0200746
Willy Tarreau21046592020-02-26 10:39:36 +0100747 if (MT_LIST_ADDED(&h1c->buf_wait.list))
748 MT_LIST_DEL(&h1c->buf_wait.list);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200749
750 h1_release_buf(h1c, &h1c->ibuf);
751 h1_release_buf(h1c, &h1c->obuf);
752
Christopher Fauletb8093cf2019-01-03 16:27:28 +0100753 if (h1c->task) {
754 h1c->task->context = NULL;
755 task_wakeup(h1c->task, TASK_WOKEN_OTHER);
756 h1c->task = NULL;
757 }
758
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200759 if (h1c->wait_event.tasklet)
760 tasklet_free(h1c->wait_event.tasklet);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200761
Christopher Fauletf2824e62018-10-01 12:12:37 +0200762 h1s_destroy(h1c->h1s);
Olivier Houchard0e079372019-04-15 17:51:16 +0200763 if (conn && h1c->wait_event.events != 0)
Olivier Houcharde179d0e2019-03-21 18:27:17 +0100764 conn->xprt->unsubscribe(conn, conn->xprt_ctx, h1c->wait_event.events,
Olivier Houchard0e079372019-04-15 17:51:16 +0200765 &h1c->wait_event);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200766 pool_free(pool_head_h1c, h1c);
767 }
768
Christopher Faulet39a96ee2019-04-08 10:52:21 +0200769 if (conn) {
770 conn->mux = NULL;
771 conn->ctx = NULL;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200772 TRACE_DEVEL("freeing conn", H1_EV_H1C_END, conn);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200773
Christopher Faulet39a96ee2019-04-08 10:52:21 +0200774 conn_stop_tracking(conn);
775 conn_full_close(conn);
776 if (conn->destroy_cb)
777 conn->destroy_cb(conn);
778 conn_free(conn);
779 }
Christopher Faulet51dbc942018-09-13 09:05:15 +0200780}
781
782/******************************************************/
783/* functions below are for the H1 protocol processing */
784/******************************************************/
Christopher Faulet9768c262018-10-22 09:34:31 +0200785/* Parse the request version and set H1_MF_VER_11 on <h1m> if the version is
786 * greater or equal to 1.1
Christopher Fauletf2824e62018-10-01 12:12:37 +0200787 */
Christopher Faulet570d1612018-11-26 11:13:57 +0100788static void h1_parse_req_vsn(struct h1m *h1m, const struct htx_sl *sl)
Christopher Fauletf2824e62018-10-01 12:12:37 +0200789{
Christopher Faulet570d1612018-11-26 11:13:57 +0100790 const char *p = HTX_SL_REQ_VPTR(sl);
Christopher Faulet9768c262018-10-22 09:34:31 +0200791
Christopher Faulet570d1612018-11-26 11:13:57 +0100792 if ((HTX_SL_REQ_VLEN(sl) == 8) &&
Christopher Faulet9768c262018-10-22 09:34:31 +0200793 (*(p + 5) > '1' ||
794 (*(p + 5) == '1' && *(p + 7) >= '1')))
795 h1m->flags |= H1_MF_VER_11;
796}
Christopher Fauletf2824e62018-10-01 12:12:37 +0200797
Christopher Faulet9768c262018-10-22 09:34:31 +0200798/* Parse the response version and set H1_MF_VER_11 on <h1m> if the version is
799 * greater or equal to 1.1
800 */
Christopher Faulet570d1612018-11-26 11:13:57 +0100801static void h1_parse_res_vsn(struct h1m *h1m, const struct htx_sl *sl)
Christopher Faulet9768c262018-10-22 09:34:31 +0200802{
Christopher Faulet570d1612018-11-26 11:13:57 +0100803 const char *p = HTX_SL_RES_VPTR(sl);
Christopher Fauletf2824e62018-10-01 12:12:37 +0200804
Christopher Faulet570d1612018-11-26 11:13:57 +0100805 if ((HTX_SL_RES_VLEN(sl) == 8) &&
Christopher Faulet9768c262018-10-22 09:34:31 +0200806 (*(p + 5) > '1' ||
807 (*(p + 5) == '1' && *(p + 7) >= '1')))
808 h1m->flags |= H1_MF_VER_11;
809}
Christopher Fauletf2824e62018-10-01 12:12:37 +0200810
Christopher Fauletf2824e62018-10-01 12:12:37 +0200811/* Deduce the connection mode of the client connection, depending on the
812 * configuration and the H1 message flags. This function is called twice, the
813 * first time when the request is parsed and the second time when the response
814 * is parsed.
815 */
816static void h1_set_cli_conn_mode(struct h1s *h1s, struct h1m *h1m)
817{
818 struct proxy *fe = h1s->h1c->px;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200819
820 if (h1m->flags & H1_MF_RESP) {
Christopher Fauletb992af02019-03-28 15:42:24 +0100821 /* Output direction: second pass */
Christopher Fauletf2824e62018-10-01 12:12:37 +0200822 if ((h1s->meth == HTTP_METH_CONNECT && h1s->status == 200) ||
Christopher Fauletb992af02019-03-28 15:42:24 +0100823 h1s->status == 101) {
824 /* Either we've established an explicit tunnel, or we're
825 * switching the protocol. In both cases, we're very unlikely to
826 * understand the next protocols. We have to switch to tunnel
827 * mode, so that we transfer the request and responses then let
828 * this protocol pass unmodified. When we later implement
829 * specific parsers for such protocols, we'll want to check the
830 * Upgrade header which contains information about that protocol
831 * for responses with status 101 (eg: see RFC2817 about TLS).
832 */
Christopher Fauletf2824e62018-10-01 12:12:37 +0200833 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_TUN;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200834 TRACE_STATE("set tunnel mode (resp)", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1s->h1c->conn, h1s);
Christopher Fauletb992af02019-03-28 15:42:24 +0100835 }
836 else if (h1s->flags & H1S_F_WANT_KAL) {
837 /* By default the client is in KAL mode. CLOSE mode mean
838 * it is imposed by the client itself. So only change
839 * KAL mode here. */
840 if (!(h1m->flags & H1_MF_XFER_LEN) || (h1m->flags & H1_MF_CONN_CLO)) {
841 /* no length known or explicit close => close */
842 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200843 TRACE_STATE("detect close mode (resp)", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1s->h1c->conn, h1s);
Christopher Fauletb992af02019-03-28 15:42:24 +0100844 }
845 else if (!(h1m->flags & H1_MF_CONN_KAL) &&
846 (fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_CLO) {
Ilya Shipitsinc02a23f2020-05-06 00:53:22 +0500847 /* no explicit keep-alive and option httpclose => close */
Christopher Fauletb992af02019-03-28 15:42:24 +0100848 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200849 TRACE_STATE("force close mode (resp)", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1s->h1c->conn, h1s);
Christopher Fauletb992af02019-03-28 15:42:24 +0100850 }
851 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200852 }
853 else {
Christopher Fauletb992af02019-03-28 15:42:24 +0100854 /* Input direction: first pass */
855 if (!(h1m->flags & (H1_MF_VER_11|H1_MF_CONN_KAL)) || h1m->flags & H1_MF_CONN_CLO) {
856 /* no explicit keep-alive in HTTP/1.0 or explicit close => close*/
Christopher Fauletf2824e62018-10-01 12:12:37 +0200857 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200858 TRACE_STATE("detect close mode (req)", H1_EV_RX_DATA|H1_EV_RX_HDRS, h1s->h1c->conn, h1s);
Christopher Fauletb992af02019-03-28 15:42:24 +0100859 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200860 }
861
862 /* If KAL, check if the frontend is stopping. If yes, switch in CLO mode */
Christopher Faulet6b81df72019-10-01 22:08:43 +0200863 if (h1s->flags & H1S_F_WANT_KAL && fe->state == PR_STSTOPPED) {
Christopher Fauletf2824e62018-10-01 12:12:37 +0200864 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200865 TRACE_STATE("stopping, set close mode", H1_EV_RX_DATA|H1_EV_RX_HDRS|H1_EV_TX_DATA|H1_EV_TX_HDRS, h1s->h1c->conn, h1s);
866 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200867}
868
869/* Deduce the connection mode of the client connection, depending on the
870 * configuration and the H1 message flags. This function is called twice, the
871 * first time when the request is parsed and the second time when the response
872 * is parsed.
873 */
874static void h1_set_srv_conn_mode(struct h1s *h1s, struct h1m *h1m)
875{
Olivier Houchardf502aca2018-12-14 19:42:40 +0100876 struct session *sess = h1s->sess;
Christopher Fauletb992af02019-03-28 15:42:24 +0100877 struct proxy *be = h1s->h1c->px;
Olivier Houchardf502aca2018-12-14 19:42:40 +0100878 int fe_flags = sess ? sess->fe->options : 0;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200879
Christopher Fauletf2824e62018-10-01 12:12:37 +0200880 if (h1m->flags & H1_MF_RESP) {
Christopher Fauletb992af02019-03-28 15:42:24 +0100881 /* Input direction: second pass */
Christopher Fauletf2824e62018-10-01 12:12:37 +0200882 if ((h1s->meth == HTTP_METH_CONNECT && h1s->status == 200) ||
Christopher Fauletb992af02019-03-28 15:42:24 +0100883 h1s->status == 101) {
884 /* Either we've established an explicit tunnel, or we're
885 * switching the protocol. In both cases, we're very unlikely to
886 * understand the next protocols. We have to switch to tunnel
887 * mode, so that we transfer the request and responses then let
888 * this protocol pass unmodified. When we later implement
889 * specific parsers for such protocols, we'll want to check the
890 * Upgrade header which contains information about that protocol
891 * for responses with status 101 (eg: see RFC2817 about TLS).
892 */
Christopher Fauletf2824e62018-10-01 12:12:37 +0200893 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_TUN;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200894 TRACE_STATE("set tunnel mode (resp)", H1_EV_RX_DATA|H1_EV_RX_HDRS, h1s->h1c->conn, h1s);
Christopher Fauletb992af02019-03-28 15:42:24 +0100895 }
896 else if (h1s->flags & H1S_F_WANT_KAL) {
897 /* By default the server is in KAL mode. CLOSE mode mean
898 * it is imposed by haproxy itself. So only change KAL
899 * mode here. */
900 if (!(h1m->flags & H1_MF_XFER_LEN) || h1m->flags & H1_MF_CONN_CLO ||
901 !(h1m->flags & (H1_MF_VER_11|H1_MF_CONN_KAL))){
902 /* no length known or explicit close or no explicit keep-alive in HTTP/1.0 => close */
903 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200904 TRACE_STATE("detect close mode (resp)", H1_EV_RX_DATA|H1_EV_RX_HDRS, h1s->h1c->conn, h1s);
Christopher Fauletb992af02019-03-28 15:42:24 +0100905 }
906 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200907 }
Christopher Faulet70033782018-12-05 13:50:11 +0100908 else {
Christopher Fauletb992af02019-03-28 15:42:24 +0100909 /* Output direction: first pass */
910 if (h1m->flags & H1_MF_CONN_CLO) {
911 /* explicit close => close */
Christopher Faulet70033782018-12-05 13:50:11 +0100912 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200913 TRACE_STATE("detect close mode (req)", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1s->h1c->conn, h1s);
Christopher Fauletb992af02019-03-28 15:42:24 +0100914 }
915 else if (!(h1m->flags & H1_MF_CONN_KAL) &&
916 ((fe_flags & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
917 (be->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
918 (fe_flags & PR_O_HTTP_MODE) == PR_O_HTTP_CLO ||
919 (be->options & PR_O_HTTP_MODE) == PR_O_HTTP_CLO)) {
920 /* no explicit keep-alive option httpclose/server-close => close */
921 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200922 TRACE_STATE("force close mode (req)", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1s->h1c->conn, h1s);
Christopher Fauletb992af02019-03-28 15:42:24 +0100923 }
Christopher Faulet70033782018-12-05 13:50:11 +0100924 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200925
926 /* If KAL, check if the backend is stopping. If yes, switch in CLO mode */
Christopher Faulet6b81df72019-10-01 22:08:43 +0200927 if (h1s->flags & H1S_F_WANT_KAL && be->state == PR_STSTOPPED) {
Christopher Fauletf2824e62018-10-01 12:12:37 +0200928 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200929 TRACE_STATE("stopping, set close mode", H1_EV_RX_DATA|H1_EV_RX_HDRS|H1_EV_TX_DATA|H1_EV_TX_HDRS, h1s->h1c->conn, h1s);
930 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200931}
932
Christopher Fauletb992af02019-03-28 15:42:24 +0100933static void h1_update_req_conn_value(struct h1s *h1s, struct h1m *h1m, struct ist *conn_val)
Christopher Fauletf2824e62018-10-01 12:12:37 +0200934{
935 struct proxy *px = h1s->h1c->px;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200936
937 /* Don't update "Connection:" header in TUNNEL mode or if "Upgrage"
938 * token is found
939 */
940 if (h1s->flags & H1S_F_WANT_TUN || h1m->flags & H1_MF_CONN_UPG)
Christopher Faulet9768c262018-10-22 09:34:31 +0200941 return;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200942
943 if (h1s->flags & H1S_F_WANT_KAL || px->options2 & PR_O2_FAKE_KA) {
Christopher Faulet6b81df72019-10-01 22:08:43 +0200944 if (!(h1m->flags & H1_MF_VER_11)) {
945 TRACE_STATE("add \"Connection: keep-alive\"", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1s->h1c->conn, h1s);
Christopher Fauletb992af02019-03-28 15:42:24 +0100946 *conn_val = ist("keep-alive");
Christopher Faulet6b81df72019-10-01 22:08:43 +0200947 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200948 }
949 else { /* H1S_F_WANT_CLO && !PR_O2_FAKE_KA */
Christopher Faulet6b81df72019-10-01 22:08:43 +0200950 if (h1m->flags & H1_MF_VER_11) {
951 TRACE_STATE("add \"Connection: close\"", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1s->h1c->conn, h1s);
Christopher Fauletb992af02019-03-28 15:42:24 +0100952 *conn_val = ist("close");
Christopher Faulet6b81df72019-10-01 22:08:43 +0200953 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200954 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200955}
956
Christopher Fauletb992af02019-03-28 15:42:24 +0100957static void h1_update_res_conn_value(struct h1s *h1s, struct h1m *h1m, struct ist *conn_val)
Christopher Fauletf2824e62018-10-01 12:12:37 +0200958{
Christopher Fauletf2824e62018-10-01 12:12:37 +0200959 /* Don't update "Connection:" header in TUNNEL mode or if "Upgrage"
960 * token is found
961 */
962 if (h1s->flags & H1S_F_WANT_TUN || h1m->flags & H1_MF_CONN_UPG)
Christopher Faulet9768c262018-10-22 09:34:31 +0200963 return;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200964
965 if (h1s->flags & H1S_F_WANT_KAL) {
Christopher Fauletb992af02019-03-28 15:42:24 +0100966 if (!(h1m->flags & H1_MF_VER_11) ||
Christopher Faulet6b81df72019-10-01 22:08:43 +0200967 !((h1m->flags & h1s->req.flags) & H1_MF_VER_11)) {
968 TRACE_STATE("add \"Connection: keep-alive\"", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1s->h1c->conn, h1s);
Christopher Fauletb992af02019-03-28 15:42:24 +0100969 *conn_val = ist("keep-alive");
Christopher Faulet6b81df72019-10-01 22:08:43 +0200970 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200971 }
972 else { /* H1S_F_WANT_CLO */
Christopher Faulet6b81df72019-10-01 22:08:43 +0200973 if (h1m->flags & H1_MF_VER_11) {
974 TRACE_STATE("add \"Connection: close\"", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1s->h1c->conn, h1s);
Christopher Fauletb992af02019-03-28 15:42:24 +0100975 *conn_val = ist("close");
Christopher Faulet6b81df72019-10-01 22:08:43 +0200976 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200977 }
Christopher Faulet9768c262018-10-22 09:34:31 +0200978}
Christopher Fauletf2824e62018-10-01 12:12:37 +0200979
Christopher Fauletb992af02019-03-28 15:42:24 +0100980static void h1_process_input_conn_mode(struct h1s *h1s, struct h1m *h1m, struct htx *htx)
Christopher Faulet9768c262018-10-22 09:34:31 +0200981{
Christopher Fauletb992af02019-03-28 15:42:24 +0100982 if (!conn_is_back(h1s->h1c->conn))
Christopher Faulet9768c262018-10-22 09:34:31 +0200983 h1_set_cli_conn_mode(h1s, h1m);
Christopher Fauletb992af02019-03-28 15:42:24 +0100984 else
Christopher Faulet9768c262018-10-22 09:34:31 +0200985 h1_set_srv_conn_mode(h1s, h1m);
Christopher Fauletf2824e62018-10-01 12:12:37 +0200986}
987
Christopher Fauletb992af02019-03-28 15:42:24 +0100988static void h1_process_output_conn_mode(struct h1s *h1s, struct h1m *h1m, struct ist *conn_val)
989{
990 if (!conn_is_back(h1s->h1c->conn))
991 h1_set_cli_conn_mode(h1s, h1m);
992 else
993 h1_set_srv_conn_mode(h1s, h1m);
994
995 if (!(h1m->flags & H1_MF_RESP))
996 h1_update_req_conn_value(h1s, h1m, conn_val);
997 else
998 h1_update_res_conn_value(h1s, h1m, conn_val);
999}
Christopher Faulete44769b2018-11-29 23:01:45 +01001000
Christopher Faulet98fbe952019-07-22 16:18:24 +02001001/* Try to adjust the case of the message header name using the global map
1002 * <hdrs_map>.
1003 */
1004static void h1_adjust_case_outgoing_hdr(struct h1s *h1s, struct h1m *h1m, struct ist *name)
1005{
1006 struct ebpt_node *node;
1007 struct h1_hdr_entry *entry;
1008
1009 /* No entry in the map, do nothing */
1010 if (eb_is_empty(&hdrs_map.map))
1011 return;
1012
1013 /* No conversion fo the request headers */
1014 if (!(h1m->flags & H1_MF_RESP) && !(h1s->h1c->px->options2 & PR_O2_H1_ADJ_BUGSRV))
1015 return;
1016
1017 /* No conversion fo the response headers */
1018 if ((h1m->flags & H1_MF_RESP) && !(h1s->h1c->px->options2 & PR_O2_H1_ADJ_BUGCLI))
1019 return;
1020
1021 node = ebis_lookup_len(&hdrs_map.map, name->ptr, name->len);
1022 if (!node)
1023 return;
1024 entry = container_of(node, struct h1_hdr_entry, node);
1025 name->ptr = entry->name.ptr;
1026 name->len = entry->name.len;
1027}
1028
Christopher Faulete44769b2018-11-29 23:01:45 +01001029/* Append the description of what is present in error snapshot <es> into <out>.
1030 * The description must be small enough to always fit in a buffer. The output
1031 * buffer may be the trash so the trash must not be used inside this function.
1032 */
1033static void h1_show_error_snapshot(struct buffer *out, const struct error_snapshot *es)
1034{
1035 chunk_appendf(out,
Christopher Fauletaa75b3d2018-12-05 16:20:40 +01001036 " H1 connection flags 0x%08x, H1 stream flags 0x%08x\n"
1037 " H1 msg state %s(%d), H1 msg flags 0x%08x\n"
1038 " H1 chunk len %lld bytes, H1 body len %lld bytes :\n",
1039 es->ctx.h1.c_flags, es->ctx.h1.s_flags,
1040 h1m_state_str(es->ctx.h1.state), es->ctx.h1.state,
1041 es->ctx.h1.m_flags, es->ctx.h1.m_clen, es->ctx.h1.m_blen);
Christopher Faulete44769b2018-11-29 23:01:45 +01001042}
1043/*
1044 * Capture a bad request or response and archive it in the proxy's structure.
1045 * By default it tries to report the error position as h1m->err_pos. However if
1046 * this one is not set, it will then report h1m->next, which is the last known
1047 * parsing point. The function is able to deal with wrapping buffers. It always
1048 * displays buffers as a contiguous area starting at buf->p. The direction is
1049 * determined thanks to the h1m's flags.
1050 */
1051static void h1_capture_bad_message(struct h1c *h1c, struct h1s *h1s,
1052 struct h1m *h1m, struct buffer *buf)
1053{
1054 struct session *sess = h1c->conn->owner;
1055 struct proxy *proxy = h1c->px;
Olivier Houchardbdb00c52020-03-12 15:30:17 +01001056 struct proxy *other_end;
Christopher Faulete44769b2018-11-29 23:01:45 +01001057 union error_snapshot_ctx ctx;
1058
Olivier Houchardbdb00c52020-03-12 15:30:17 +01001059 if (h1s->cs && h1s->cs->data) {
1060 if (sess == NULL)
1061 sess = si_strm(h1s->cs->data)->sess;
1062 if (!(h1m->flags & H1_MF_RESP))
1063 other_end = si_strm(h1s->cs->data)->be;
1064 else
1065 other_end = sess->fe;
1066 } else
1067 other_end = NULL;
Christopher Faulete44769b2018-11-29 23:01:45 +01001068
1069 /* http-specific part now */
1070 ctx.h1.state = h1m->state;
1071 ctx.h1.c_flags = h1c->flags;
1072 ctx.h1.s_flags = h1s->flags;
1073 ctx.h1.m_flags = h1m->flags;
1074 ctx.h1.m_clen = h1m->curr_len;
1075 ctx.h1.m_blen = h1m->body_len;
1076
1077 proxy_capture_error(proxy, !!(h1m->flags & H1_MF_RESP), other_end,
1078 h1c->conn->target, sess, buf, 0, 0,
Christopher Fauletaa75b3d2018-12-05 16:20:40 +01001079 (h1m->err_pos >= 0) ? h1m->err_pos : h1m->next,
1080 &ctx, h1_show_error_snapshot);
Christopher Faulete44769b2018-11-29 23:01:45 +01001081}
1082
Christopher Fauletadb22202018-12-12 10:32:09 +01001083/* Emit the chunksize followed by a CRLF in front of data of the buffer
1084 * <buf>. It goes backwards and starts with the byte before the buffer's
1085 * head. The caller is responsible for ensuring there is enough room left before
1086 * the buffer's head for the string.
1087 */
1088static void h1_emit_chunk_size(struct buffer *buf, size_t chksz)
1089{
1090 char *beg, *end;
1091
1092 beg = end = b_head(buf);
1093 *--beg = '\n';
1094 *--beg = '\r';
1095 do {
1096 *--beg = hextab[chksz & 0xF];
1097 } while (chksz >>= 4);
1098 buf->head -= (end - beg);
1099 b_add(buf, end - beg);
1100}
1101
1102/* Emit a CRLF after the data of the buffer <buf>. The caller is responsible for
1103 * ensuring there is enough room left in the buffer for the string. */
1104static void h1_emit_chunk_crlf(struct buffer *buf)
1105{
1106 *(b_peek(buf, b_data(buf))) = '\r';
1107 *(b_peek(buf, b_data(buf) + 1)) = '\n';
1108 b_add(buf, 2);
1109}
1110
Christopher Faulet129817b2018-09-20 16:14:40 +02001111/*
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001112 * Switch the request to tunnel mode. This function must only be called for
Christopher Fauletf3158e92019-11-15 11:14:23 +01001113 * CONNECT requests. On the client side, if the response is not finished, the
1114 * mux is mark as busy on input.
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001115 */
1116static void h1_set_req_tunnel_mode(struct h1s *h1s)
1117{
1118 h1s->req.flags &= ~(H1_MF_XFER_LEN|H1_MF_CLEN|H1_MF_CHNK);
1119 h1s->req.state = H1_MSG_TUNNEL;
Christopher Fauletf3158e92019-11-15 11:14:23 +01001120 TRACE_STATE("switch H1 request in tunnel mode", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1s->h1c->conn, h1s);
1121
Christopher Faulet76014fd2019-12-10 11:47:22 +01001122 if (!conn_is_back(h1s->h1c->conn)) {
1123 h1s->flags &= ~H1S_F_PARSING_DONE;
1124 if (h1s->res.state < H1_MSG_DONE) {
1125 h1s->h1c->flags |= H1C_F_IN_BUSY;
1126 TRACE_STATE("switch h1c in busy mode", H1_EV_RX_DATA|H1_EV_H1C_BLK, h1s->h1c->conn, h1s);
1127 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02001128 }
Christopher Fauletf3158e92019-11-15 11:14:23 +01001129 else if (h1s->h1c->flags & H1C_F_IN_BUSY) {
1130 h1s->h1c->flags &= ~H1C_F_IN_BUSY;
1131 tasklet_wakeup(h1s->h1c->wait_event.tasklet);
1132 TRACE_STATE("h1c no more busy", H1_EV_RX_DATA|H1_EV_H1C_BLK|H1_EV_H1C_WAKE, h1s->h1c->conn, h1s);
1133 }
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001134}
1135
1136/*
1137 * Switch the response to tunnel mode. This function must only be called on
Ilya Shipitsinc02a23f2020-05-06 00:53:22 +05001138 * successful replies to CONNECT requests or on protocol switching. In this
Christopher Fauletf3158e92019-11-15 11:14:23 +01001139 * last case, this function takes care to switch the request to tunnel mode if
1140 * possible. On the server side, if the request is not finished, the mux is mark
1141 * as busy on input.
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001142 */
1143static void h1_set_res_tunnel_mode(struct h1s *h1s)
1144{
Christopher Fauletf3158e92019-11-15 11:14:23 +01001145
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001146 h1s->res.flags &= ~(H1_MF_XFER_LEN|H1_MF_CLEN|H1_MF_CHNK);
1147 h1s->res.state = H1_MSG_TUNNEL;
Christopher Fauletf3158e92019-11-15 11:14:23 +01001148 TRACE_STATE("switch H1 response in tunnel mode", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1s->h1c->conn, h1s);
1149
Christopher Faulet76014fd2019-12-10 11:47:22 +01001150 if (conn_is_back(h1s->h1c->conn)) {
1151 h1s->flags &= ~H1S_F_PARSING_DONE;
1152 /* On protocol switching, switch the request to tunnel mode if it is in
1153 * DONE state. Otherwise we will wait the end of the request to switch
1154 * it in tunnel mode.
1155 */
1156 if (h1s->req.state < H1_MSG_DONE) {
1157 h1s->h1c->flags |= H1C_F_IN_BUSY;
1158 TRACE_STATE("switch h1c in busy mode", H1_EV_RX_DATA|H1_EV_H1C_BLK, h1s->h1c->conn, h1s);
1159 }
1160 else if (h1s->status == 101 && h1s->req.state == H1_MSG_DONE) {
1161 h1s->req.flags &= ~(H1_MF_XFER_LEN|H1_MF_CLEN|H1_MF_CHNK);
1162 h1s->req.state = H1_MSG_TUNNEL;
1163 TRACE_STATE("switch H1 request in tunnel mode", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1s->h1c->conn, h1s);
1164 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02001165 }
Christopher Fauletf3158e92019-11-15 11:14:23 +01001166 else if (h1s->h1c->flags & H1C_F_IN_BUSY) {
1167 h1s->h1c->flags &= ~H1C_F_IN_BUSY;
1168 tasklet_wakeup(h1s->h1c->wait_event.tasklet);
1169 TRACE_STATE("h1c no more busy", H1_EV_RX_DATA|H1_EV_H1C_BLK|H1_EV_H1C_WAKE, h1s->h1c->conn, h1s);
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001170 }
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001171}
1172
1173/*
Christopher Faulet129817b2018-09-20 16:14:40 +02001174 * Parse HTTP/1 headers. It returns the number of bytes parsed if > 0, or 0 if
Christopher Fauletf2824e62018-10-01 12:12:37 +02001175 * it couldn't proceed. Parsing errors are reported by setting H1S_F_*_ERROR
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001176 * flag. If relies on the function http_parse_msg_hdrs() to do the parsing.
Christopher Faulet129817b2018-09-20 16:14:40 +02001177 */
Christopher Faulet9768c262018-10-22 09:34:31 +02001178static size_t h1_process_headers(struct h1s *h1s, struct h1m *h1m, struct htx *htx,
Christopher Fauletf2824e62018-10-01 12:12:37 +02001179 struct buffer *buf, size_t *ofs, size_t max)
Christopher Faulet129817b2018-09-20 16:14:40 +02001180{
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001181 union h1_sl h1sl;
Christopher Faulet129817b2018-09-20 16:14:40 +02001182 int ret = 0;
1183
Christopher Faulet6b81df72019-10-01 22:08:43 +02001184 TRACE_ENTER(H1_EV_RX_DATA|H1_EV_RX_HDRS, h1s->h1c->conn, h1s,, (size_t[]){max});
1185
Christopher Faulet89aed322020-06-02 17:33:56 +02001186 if (!(h1s->h1c->px->options2 & PR_O2_NO_H2_UPGRADE) && /* H2 upgrade supported by the proxy */
1187 !(h1s->flags & H1S_F_NOT_FIRST) && /* It is the first transaction */
1188 !(h1m->flags & H1_MF_RESP)) { /* It is a request */
Christopher Faulet0ef372a2019-04-08 10:57:20 +02001189 /* Try to match H2 preface before parsing the request headers. */
1190 ret = b_isteq(buf, 0, b_data(buf), ist(H2_CONN_PREFACE));
Christopher Faulet6b81df72019-10-01 22:08:43 +02001191 if (ret > 0) {
Christopher Faulet0ef372a2019-04-08 10:57:20 +02001192 goto h2c_upgrade;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001193 }
Christopher Faulet0ef372a2019-04-08 10:57:20 +02001194 }
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001195 else {
1196 if (h1s->meth == HTTP_METH_CONNECT)
1197 h1m->flags |= H1_MF_METH_CONNECT;
1198 if (h1s->meth == HTTP_METH_HEAD)
1199 h1m->flags |= H1_MF_METH_HEAD;
1200 }
Christopher Faulet0ef372a2019-04-08 10:57:20 +02001201
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001202 ret = h1_parse_msg_hdrs(h1m, &h1sl, htx, buf, *ofs, max);
1203 if (!ret) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001204 TRACE_DEVEL("leaving on missing data or error", H1_EV_RX_DATA|H1_EV_RX_HDRS, h1s->h1c->conn, h1s);
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001205 if (htx->flags & HTX_FL_PARSING_ERROR) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001206 if (!(h1m->flags & H1_MF_RESP)) {
1207 h1s->flags |= H1S_F_REQ_ERROR;
1208 TRACE_USER("rejected H1 request", H1_EV_RX_DATA|H1_EV_RX_HDRS|H1_EV_H1S_ERR, h1s->h1c->conn, h1s);
1209 }
1210 else {
1211 h1s->flags |= H1S_F_RES_ERROR;
1212 TRACE_USER("rejected H1 response", H1_EV_RX_DATA|H1_EV_RX_HDRS|H1_EV_H1S_ERR, h1s->h1c->conn, h1s);
1213 }
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001214 h1s->cs->flags |= CS_FL_EOI;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001215 TRACE_STATE("parsing error", H1_EV_RX_DATA|H1_EV_RX_HDRS|H1_EV_H1S_ERR, h1s->h1c->conn, h1s);
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001216 h1_capture_bad_message(h1s->h1c, h1s, h1m, buf);
1217 }
Christopher Faulet129817b2018-09-20 16:14:40 +02001218 goto end;
1219 }
1220
Christopher Faulet486498c2019-10-11 14:22:00 +02001221 if (h1m->err_pos >= 0) {
1222 /* Maybe we found an error during the parsing while we were
1223 * configured not to block on that, so we have to capture it
1224 * now.
1225 */
1226 TRACE_STATE("Ignored parsing error", H1_EV_RX_DATA|H1_EV_RX_HDRS, h1s->h1c->conn, h1s);
1227 h1_capture_bad_message(h1s->h1c, h1s, h1m, buf);
1228 }
1229
Christopher Faulet129817b2018-09-20 16:14:40 +02001230 if (!(h1m->flags & H1_MF_RESP)) {
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001231 h1s->meth = h1sl.rq.meth;
Christopher Fauletf3158e92019-11-15 11:14:23 +01001232 if (h1m->state == H1_MSG_TUNNEL)
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001233 h1_set_req_tunnel_mode(h1s);
Christopher Faulet129817b2018-09-20 16:14:40 +02001234 }
1235 else {
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001236 h1s->status = h1sl.st.status;
Christopher Fauletf3158e92019-11-15 11:14:23 +01001237 if (h1m->state == H1_MSG_TUNNEL)
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001238 h1_set_res_tunnel_mode(h1s);
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001239 }
Christopher Fauletb992af02019-03-28 15:42:24 +01001240 h1_process_input_conn_mode(h1s, h1m, htx);
Christopher Faulet9768c262018-10-22 09:34:31 +02001241 *ofs += ret;
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001242
Christopher Faulet129817b2018-09-20 16:14:40 +02001243 end:
Christopher Faulet6b81df72019-10-01 22:08:43 +02001244 TRACE_LEAVE(H1_EV_RX_DATA|H1_EV_RX_HDRS, h1s->h1c->conn, h1s,, (size_t[]){ret});
Christopher Faulet129817b2018-09-20 16:14:40 +02001245 return ret;
Christopher Fauletf2824e62018-10-01 12:12:37 +02001246
Christopher Faulet0ef372a2019-04-08 10:57:20 +02001247 h2c_upgrade:
1248 h1s->h1c->flags |= H1C_F_UPG_H2C;
Christopher Faulet8e9e3ef2019-05-17 09:14:10 +02001249 h1s->cs->flags |= CS_FL_EOI;
Christopher Faulet0ef372a2019-04-08 10:57:20 +02001250 htx->flags |= HTX_FL_UPGRADE;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001251 TRACE_DEVEL("leaving on H2 update", H1_EV_RX_DATA|H1_EV_RX_HDRS|H1_EV_RX_EOI, h1s->h1c->conn, h1s);
1252 return 0;
Christopher Faulet129817b2018-09-20 16:14:40 +02001253}
1254
1255/*
Christopher Fauletf2824e62018-10-01 12:12:37 +02001256 * Parse HTTP/1 body. It returns the number of bytes parsed if > 0, or 0 if it
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001257 * couldn't proceed. Parsing errors are reported by setting H1S_F_*_ERROR flag.
1258 * If relies on the function http_parse_msg_data() to do the parsing.
Christopher Faulet129817b2018-09-20 16:14:40 +02001259 */
Christopher Fauletaf542632019-10-01 21:52:49 +02001260static size_t h1_process_data(struct h1s *h1s, struct h1m *h1m, struct htx **htx,
Christopher Fauletaa75b3d2018-12-05 16:20:40 +01001261 struct buffer *buf, size_t *ofs, size_t max,
Christopher Faulet30db3d72019-05-17 15:35:33 +02001262 struct buffer *htxbuf)
Christopher Faulet129817b2018-09-20 16:14:40 +02001263{
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001264 int ret;
Christopher Faulet30db3d72019-05-17 15:35:33 +02001265
Christopher Faulet6b81df72019-10-01 22:08:43 +02001266 TRACE_ENTER(H1_EV_RX_DATA|H1_EV_RX_BODY, h1s->h1c->conn, h1s,, (size_t[]){max});
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001267 ret = h1_parse_msg_data(h1m, htx, buf, *ofs, max, htxbuf);
Christopher Faulet02a02532019-11-15 09:36:28 +01001268 if (!ret) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001269 TRACE_DEVEL("leaving on missing data or error", H1_EV_RX_DATA|H1_EV_RX_BODY, h1s->h1c->conn, h1s);
Christopher Faulet02a02532019-11-15 09:36:28 +01001270 if ((*htx)->flags & HTX_FL_PARSING_ERROR) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001271 if (!(h1m->flags & H1_MF_RESP)) {
1272 h1s->flags |= H1S_F_REQ_ERROR;
1273 TRACE_USER("rejected H1 request", H1_EV_RX_DATA|H1_EV_RX_BODY|H1_EV_H1S_ERR, h1s->h1c->conn, h1s);
1274 }
1275 else {
1276 h1s->flags |= H1S_F_RES_ERROR;
1277 TRACE_USER("rejected H1 response", H1_EV_RX_DATA|H1_EV_RX_BODY|H1_EV_H1S_ERR, h1s->h1c->conn, h1s);
1278 }
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001279 h1s->cs->flags |= CS_FL_EOI;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001280 TRACE_STATE("parsing error", H1_EV_RX_DATA|H1_EV_RX_BODY|H1_EV_H1S_ERR, h1s->h1c->conn, h1s);
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001281 h1_capture_bad_message(h1s->h1c, h1s, h1m, buf);
Christopher Faulet9768c262018-10-22 09:34:31 +02001282 }
Christopher Faulet02a02532019-11-15 09:36:28 +01001283 goto end;
Christopher Faulet129817b2018-09-20 16:14:40 +02001284 }
1285
Willy Tarreau17ccd1a2020-01-17 16:19:34 +01001286 if (h1m->state == H1_MSG_DATA && h1m->curr_len && h1s->cs)
1287 h1s->cs->flags |= CS_FL_MAY_SPLICE;
1288 else if (h1s->cs)
1289 h1s->cs->flags &= ~CS_FL_MAY_SPLICE;
1290
Christopher Faulet02a02532019-11-15 09:36:28 +01001291 *ofs += ret;
1292
1293 end:
Christopher Faulet6b81df72019-10-01 22:08:43 +02001294 TRACE_LEAVE(H1_EV_RX_DATA|H1_EV_RX_BODY, h1s->h1c->conn, h1s,, (size_t[]){ret});
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001295 return ret;
Christopher Faulet129817b2018-09-20 16:14:40 +02001296}
1297
1298/*
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001299 * Parse HTTP/1 trailers. It returns the number of bytes parsed if > 0, or 0 if
1300 * it couldn't proceed. Parsing errors are reported by setting H1S_F_*_ERROR
1301 * flag and filling h1s->err_pos and h1s->err_state fields. This functions is
1302 * responsible to update the parser state <h1m>.
1303 */
1304static size_t h1_process_trailers(struct h1s *h1s, struct h1m *h1m, struct htx *htx,
1305 struct buffer *buf, size_t *ofs, size_t max)
1306{
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001307 int ret;
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001308
Christopher Faulet6b81df72019-10-01 22:08:43 +02001309 TRACE_ENTER(H1_EV_RX_DATA|H1_EV_RX_TLRS, h1s->h1c->conn, h1s,, (size_t[]){max});
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001310 ret = h1_parse_msg_tlrs(h1m, htx, buf, *ofs, max);
Christopher Faulet02a02532019-11-15 09:36:28 +01001311 if (!ret) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001312 TRACE_DEVEL("leaving on missing data or error", H1_EV_RX_DATA|H1_EV_RX_BODY, h1s->h1c->conn, h1s);
Christopher Faulet02a02532019-11-15 09:36:28 +01001313 if (htx->flags & HTX_FL_PARSING_ERROR) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001314 if (!(h1m->flags & H1_MF_RESP)) {
1315 h1s->flags |= H1S_F_REQ_ERROR;
1316 TRACE_USER("rejected H1 request", H1_EV_RX_DATA|H1_EV_RX_TLRS|H1_EV_H1S_ERR, h1s->h1c->conn, h1s);
1317 }
1318 else {
1319 h1s->flags |= H1S_F_RES_ERROR;
1320 TRACE_USER("rejected H1 response", H1_EV_RX_DATA|H1_EV_RX_TLRS|H1_EV_H1S_ERR, h1s->h1c->conn, h1s);
1321 }
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001322 h1s->cs->flags |= CS_FL_EOI;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001323 TRACE_STATE("parsing error", H1_EV_RX_DATA|H1_EV_RX_TLRS|H1_EV_H1S_ERR, h1s->h1c->conn, h1s);
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001324 h1_capture_bad_message(h1s->h1c, h1s, h1m, buf);
1325 }
Christopher Faulet02a02532019-11-15 09:36:28 +01001326 goto end;
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001327 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02001328
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001329 *ofs += ret;
Christopher Faulet02a02532019-11-15 09:36:28 +01001330
1331 end:
Christopher Faulet6b81df72019-10-01 22:08:43 +02001332 TRACE_LEAVE(H1_EV_RX_DATA|H1_EV_RX_TLRS, h1s->h1c->conn, h1s,, (size_t[]){ret});
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001333 return ret;
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001334}
1335
1336/*
Christopher Faulet76014fd2019-12-10 11:47:22 +01001337 * Add the EOM in the HTX message. It returns 1 on success or 0 if it couldn't
1338 * proceed. This functions is responsible to update the parser state <h1m>. It
1339 * also add the flag CS_FL_EOI on the CS.
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001340 */
Christopher Faulet76014fd2019-12-10 11:47:22 +01001341static size_t h1_process_eom(struct h1s *h1s, struct h1m *h1m, struct htx *htx,
1342 struct buffer *buf, size_t *ofs, size_t max)
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001343{
Christopher Faulet76014fd2019-12-10 11:47:22 +01001344 int ret;
1345
1346 TRACE_ENTER(H1_EV_RX_DATA|H1_EV_RX_EOI, h1s->h1c->conn, h1s,, (size_t[]){max});
1347 ret = h1_parse_msg_eom(h1m, htx, max);
1348 if (!ret) {
1349 TRACE_DEVEL("leaving on missing data or error", H1_EV_RX_DATA|H1_EV_RX_EOI, h1s->h1c->conn, h1s);
1350 if (htx->flags & HTX_FL_PARSING_ERROR) {
1351 if (!(h1m->flags & H1_MF_RESP)) {
1352 h1s->flags |= H1S_F_REQ_ERROR;
1353 TRACE_USER("rejected H1 request", H1_EV_RX_DATA|H1_EV_RX_EOI|H1_EV_H1S_ERR, h1s->h1c->conn, h1s);
1354 }
1355 else {
1356 h1s->flags |= H1S_F_RES_ERROR;
1357 TRACE_USER("rejected H1 response", H1_EV_RX_DATA|H1_EV_RX_EOI|H1_EV_H1S_ERR, h1s->h1c->conn, h1s);
1358 }
1359 h1s->cs->flags |= CS_FL_EOI;
1360 TRACE_STATE("parsing error", H1_EV_RX_DATA|H1_EV_RX_EOI|H1_EV_H1S_ERR, h1s->h1c->conn, h1s);
1361 h1_capture_bad_message(h1s->h1c, h1s, h1m, buf);
1362 }
1363 goto end;
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001364 }
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001365
Christopher Faulet76014fd2019-12-10 11:47:22 +01001366 h1s->flags |= H1S_F_PARSING_DONE;
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001367 h1s->cs->flags |= CS_FL_EOI;
Christopher Faulet76014fd2019-12-10 11:47:22 +01001368 end:
1369 TRACE_LEAVE(H1_EV_RX_DATA|H1_EV_RX_EOI, h1s->h1c->conn, h1s,, (size_t[]){ret});
1370 return ret;
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001371}
1372
1373/*
Christopher Faulet129817b2018-09-20 16:14:40 +02001374 * Process incoming data. It parses data and transfer them from h1c->ibuf into
Christopher Faulet539e0292018-11-19 10:40:09 +01001375 * <buf>. It returns the number of bytes parsed and transferred if > 0, or 0 if
1376 * it couldn't proceed.
Christopher Faulet129817b2018-09-20 16:14:40 +02001377 */
Christopher Faulet30db3d72019-05-17 15:35:33 +02001378static size_t h1_process_input(struct h1c *h1c, struct buffer *buf, size_t count)
Christopher Faulet51dbc942018-09-13 09:05:15 +02001379{
Christopher Faulet539e0292018-11-19 10:40:09 +01001380 struct h1s *h1s = h1c->h1s;
Christopher Faulet129817b2018-09-20 16:14:40 +02001381 struct h1m *h1m;
Christopher Faulet9768c262018-10-22 09:34:31 +02001382 struct htx *htx;
Christopher Faulet30db3d72019-05-17 15:35:33 +02001383 size_t ret, data;
Christopher Faulet129817b2018-09-20 16:14:40 +02001384 size_t total = 0;
Christopher Fauletf2824e62018-10-01 12:12:37 +02001385 int errflag;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001386
Christopher Faulet539e0292018-11-19 10:40:09 +01001387 htx = htx_from_buf(buf);
Christopher Faulet6b81df72019-10-01 22:08:43 +02001388 TRACE_ENTER(H1_EV_RX_DATA, h1c->conn, h1s, htx, (size_t[]){count});
Willy Tarreau3a6190f2018-12-16 08:29:56 +01001389
Christopher Fauletf2824e62018-10-01 12:12:37 +02001390 if (!conn_is_back(h1c->conn)) {
1391 h1m = &h1s->req;
1392 errflag = H1S_F_REQ_ERROR;
1393 }
1394 else {
1395 h1m = &h1s->res;
1396 errflag = H1S_F_RES_ERROR;
1397 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001398
Christopher Faulet74027762019-02-26 14:45:05 +01001399 data = htx->data;
Christopher Faulet0e54d542019-07-04 21:22:34 +02001400 if (h1s->flags & errflag)
1401 goto end;
1402
Christopher Fauletd44ad5b2018-11-19 21:52:12 +01001403 do {
Christopher Faulet30db3d72019-05-17 15:35:33 +02001404 size_t used = htx_used_space(htx);
1405
Christopher Faulet129817b2018-09-20 16:14:40 +02001406 if (h1m->state <= H1_MSG_LAST_LF) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001407 TRACE_PROTO("parsing message headers", H1_EV_RX_DATA|H1_EV_RX_HDRS, h1c->conn, h1s);
Christopher Faulet539e0292018-11-19 10:40:09 +01001408 ret = h1_process_headers(h1s, h1m, htx, &h1c->ibuf, &total, count);
Christopher Faulet129817b2018-09-20 16:14:40 +02001409 if (!ret)
1410 break;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001411
1412 TRACE_USER((!(h1m->flags & H1_MF_RESP) ? "rcvd H1 request headers" : "rcvd H1 response headers"),
1413 H1_EV_RX_DATA|H1_EV_RX_HDRS, h1c->conn, h1s, htx, (size_t[]){ret});
1414
Christopher Fauletb75b5ea2019-05-17 08:37:28 +02001415 if ((h1m->flags & H1_MF_RESP) &&
1416 h1s->status < 200 && (h1s->status == 100 || h1s->status >= 102)) {
1417 h1m_init_res(&h1s->res);
1418 h1m->flags |= (H1_MF_NO_PHDR|H1_MF_CLEAN_CONN_HDR);
Christopher Faulet6b81df72019-10-01 22:08:43 +02001419 TRACE_STATE("1xx response rcvd", H1_EV_RX_DATA|H1_EV_RX_HDRS, h1c->conn, h1s);
Christopher Fauletb75b5ea2019-05-17 08:37:28 +02001420 }
Christopher Faulet129817b2018-09-20 16:14:40 +02001421 }
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001422 else if (h1m->state < H1_MSG_TRAILERS) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001423 TRACE_PROTO("parsing message payload", H1_EV_RX_DATA|H1_EV_RX_BODY, h1c->conn, h1s);
Christopher Fauletaf542632019-10-01 21:52:49 +02001424 ret = h1_process_data(h1s, h1m, &htx, &h1c->ibuf, &total, count, buf);
Christopher Faulet76014fd2019-12-10 11:47:22 +01001425 if (!ret && h1m->state != H1_MSG_DONE)
Christopher Faulet129817b2018-09-20 16:14:40 +02001426 break;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001427
1428 TRACE_PROTO((!(h1m->flags & H1_MF_RESP) ? "rcvd H1 request payload data" : "rcvd H1 response payload data"),
1429 H1_EV_RX_DATA|H1_EV_RX_BODY, h1c->conn, h1s, htx, (size_t[]){ret});
Christopher Faulet129817b2018-09-20 16:14:40 +02001430 }
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001431 else if (h1m->state == H1_MSG_TRAILERS) {
Christopher Faulet76014fd2019-12-10 11:47:22 +01001432 TRACE_PROTO("parsing message trailers", H1_EV_RX_DATA|H1_EV_RX_TLRS, h1c->conn, h1s);
1433 ret = h1_process_trailers(h1s, h1m, htx, &h1c->ibuf, &total, count);
1434 if (!ret && h1m->state != H1_MSG_DONE)
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001435 break;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001436
Christopher Faulet76014fd2019-12-10 11:47:22 +01001437 TRACE_PROTO((!(h1m->flags & H1_MF_RESP) ? "rcvd H1 request trailers" : "rcvd H1 response trailers"),
1438 H1_EV_RX_DATA|H1_EV_RX_TLRS, h1c->conn, h1s, htx, (size_t[]){ret});
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001439 }
Christopher Fauletcb55f482018-12-10 11:56:47 +01001440 else if (h1m->state == H1_MSG_DONE) {
Christopher Faulet76014fd2019-12-10 11:47:22 +01001441 if (!(h1s->flags & H1S_F_PARSING_DONE)) {
1442 if (!h1_process_eom(h1s, h1m, htx, &h1c->ibuf, &total, count))
1443 break;
1444
1445 TRACE_USER((!(h1m->flags & H1_MF_RESP) ? "H1 request fully rcvd" : "H1 response fully rcvd"),
1446 H1_EV_RX_DATA|H1_EV_RX_EOI, h1c->conn, h1s, htx);
1447 }
1448
Christopher Fauletf3158e92019-11-15 11:14:23 +01001449 if (!(h1m->flags & H1_MF_RESP) && h1s->status == 101)
1450 h1_set_req_tunnel_mode(h1s);
1451 else if (h1s->req.state < H1_MSG_DONE || h1s->res.state < H1_MSG_DONE) {
Christopher Faulet2f320ee2019-04-16 20:26:53 +02001452 h1c->flags |= H1C_F_IN_BUSY;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001453 TRACE_STATE("switch h1c in busy mode", H1_EV_RX_DATA|H1_EV_H1C_BLK, h1c->conn, h1s);
1454 }
Christopher Fauletf2824e62018-10-01 12:12:37 +02001455 break;
Christopher Fauletcb55f482018-12-10 11:56:47 +01001456 }
Christopher Fauletf2824e62018-10-01 12:12:37 +02001457 else if (h1m->state == H1_MSG_TUNNEL) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001458 TRACE_PROTO("parsing tunneled data", H1_EV_RX_DATA, h1c->conn, h1s);
Christopher Fauletaf542632019-10-01 21:52:49 +02001459 ret = h1_process_data(h1s, h1m, &htx, &h1c->ibuf, &total, count, buf);
Christopher Faulet9768c262018-10-22 09:34:31 +02001460 if (!ret)
1461 break;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001462
1463 TRACE_PROTO((!(h1m->flags & H1_MF_RESP) ? "rcvd H1 request tunneled data" : "rcvd H1 response tunneled data"),
1464 H1_EV_RX_DATA|H1_EV_RX_EOI, h1c->conn, h1s, htx, (size_t[]){ret});
Christopher Fauletf2824e62018-10-01 12:12:37 +02001465 }
Christopher Faulet129817b2018-09-20 16:14:40 +02001466 else {
Christopher Fauletf2824e62018-10-01 12:12:37 +02001467 h1s->flags |= errflag;
Christopher Faulet129817b2018-09-20 16:14:40 +02001468 break;
1469 }
1470
Christopher Faulet30db3d72019-05-17 15:35:33 +02001471 count -= htx_used_space(htx) - used;
Christopher Faulet6b321922019-09-03 16:26:15 +02001472 } while (!(h1s->flags & errflag));
Christopher Faulet129817b2018-09-20 16:14:40 +02001473
Christopher Faulet6b81df72019-10-01 22:08:43 +02001474 if (h1s->flags & errflag) {
1475 TRACE_PROTO("parsing error", H1_EV_RX_DATA, h1c->conn, h1s);
Christopher Faulet47365272018-10-31 17:40:50 +01001476 goto parsing_err;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001477 }
Christopher Faulet129817b2018-09-20 16:14:40 +02001478
Christopher Faulet539e0292018-11-19 10:40:09 +01001479 b_del(&h1c->ibuf, total);
1480
1481 end:
Christopher Faulet27ba2dc2018-12-05 11:53:24 +01001482 htx_to_buf(htx, buf);
Christopher Faulet30db3d72019-05-17 15:35:33 +02001483 ret = htx->data - data;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001484 if ((h1c->flags & H1C_F_IN_FULL) && buf_room_for_htx_data(&h1c->ibuf)) {
Christopher Faulet539e0292018-11-19 10:40:09 +01001485 h1c->flags &= ~H1C_F_IN_FULL;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001486 TRACE_STATE("h1c ibuf not full anymore", H1_EV_RX_DATA|H1_EV_H1C_BLK|H1_EV_H1C_WAKE);
Willy Tarreau2c1f37d2020-03-04 17:50:02 +01001487 h1c->conn->xprt->subscribe(h1c->conn, h1c->conn->xprt_ctx, SUB_RETRY_RECV, &h1c->wait_event);
Christopher Faulet47365272018-10-31 17:40:50 +01001488 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02001489
Christopher Fauletcf56b992018-12-11 16:12:31 +01001490 h1s->cs->flags &= ~(CS_FL_RCV_MORE | CS_FL_WANT_ROOM);
1491
Christopher Fauletcdc90e92019-03-28 13:28:46 +01001492 if (!b_data(&h1c->ibuf))
Christopher Faulet539e0292018-11-19 10:40:09 +01001493 h1_release_buf(h1c, &h1c->ibuf);
Christopher Faulet6716cc22019-12-20 17:33:24 +01001494 if (h1s_data_pending(h1s) && !htx_is_empty(htx))
Christopher Fauletcf56b992018-12-11 16:12:31 +01001495 h1s->cs->flags |= CS_FL_RCV_MORE | CS_FL_WANT_ROOM;
Christopher Faulet76014fd2019-12-10 11:47:22 +01001496 else if (h1s->flags & H1S_F_REOS) {
Christopher Fauletf6ce9d62018-12-10 15:30:06 +01001497 h1s->cs->flags |= CS_FL_EOS;
Christopher Faulet466080d2019-11-15 09:50:22 +01001498 if (h1m->state == H1_MSG_TUNNEL)
1499 h1s->cs->flags |= CS_FL_EOI;
1500 else if (h1m->state > H1_MSG_LAST_LF && h1m->state < H1_MSG_DONE)
Christopher Fauletb8d2ee02019-02-25 15:29:51 +01001501 h1s->cs->flags |= CS_FL_ERROR;
Christopher Faulet539e0292018-11-19 10:40:09 +01001502 }
Christopher Fauletf6ce9d62018-12-10 15:30:06 +01001503
Christopher Faulet6b81df72019-10-01 22:08:43 +02001504 TRACE_LEAVE(H1_EV_RX_DATA, h1c->conn, h1s, htx, (size_t[]){ret});
Christopher Faulet30db3d72019-05-17 15:35:33 +02001505 return ret;
Christopher Faulet47365272018-10-31 17:40:50 +01001506
1507 parsing_err:
Christopher Faulet47365272018-10-31 17:40:50 +01001508 b_reset(&h1c->ibuf);
Christopher Faulet27ba2dc2018-12-05 11:53:24 +01001509 htx_to_buf(htx, buf);
Christopher Faulet6b81df72019-10-01 22:08:43 +02001510 TRACE_DEVEL("leaving on error", H1_EV_RX_DATA|H1_EV_STRM_ERR, h1c->conn, h1s);
Christopher Faulet9768c262018-10-22 09:34:31 +02001511 return 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001512}
1513
Christopher Faulet129817b2018-09-20 16:14:40 +02001514/*
1515 * Process outgoing data. It parses data and transfer them from the channel buffer into
1516 * h1c->obuf. It returns the number of bytes parsed and transferred if > 0, or
1517 * 0 if it couldn't proceed.
1518 */
Christopher Faulet51dbc942018-09-13 09:05:15 +02001519static size_t h1_process_output(struct h1c *h1c, struct buffer *buf, size_t count)
1520{
Christopher Faulet129817b2018-09-20 16:14:40 +02001521 struct h1s *h1s = h1c->h1s;
1522 struct h1m *h1m;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001523 struct htx *chn_htx = NULL;
Christopher Faulet9768c262018-10-22 09:34:31 +02001524 struct htx_blk *blk;
Christopher Fauletc2518a52019-06-25 21:41:02 +02001525 struct buffer tmp;
Christopher Faulet129817b2018-09-20 16:14:40 +02001526 size_t total = 0;
Christopher Fauletf2824e62018-10-01 12:12:37 +02001527 int errflag;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001528
Christopher Faulet47365272018-10-31 17:40:50 +01001529 if (!count)
1530 goto end;
Willy Tarreau37dd54d2018-12-15 14:48:31 +01001531
Christopher Faulet94b2c762019-05-24 15:28:57 +02001532 chn_htx = htxbuf(buf);
Christopher Faulet6b81df72019-10-01 22:08:43 +02001533 TRACE_ENTER(H1_EV_TX_DATA, h1c->conn, h1s, chn_htx, (size_t[]){count});
1534
Willy Tarreau37dd54d2018-12-15 14:48:31 +01001535 if (htx_is_empty(chn_htx))
1536 goto end;
Christopher Faulet9768c262018-10-22 09:34:31 +02001537
Christopher Faulet51dbc942018-09-13 09:05:15 +02001538 if (!h1_get_buf(h1c, &h1c->obuf)) {
1539 h1c->flags |= H1C_F_OUT_ALLOC;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001540 TRACE_STATE("waiting for h1c obuf allocation", H1_EV_TX_DATA|H1_EV_H1S_BLK, h1c->conn, h1s);
Christopher Faulet51dbc942018-09-13 09:05:15 +02001541 goto end;
1542 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02001543
Christopher Fauletf2824e62018-10-01 12:12:37 +02001544 if (!conn_is_back(h1c->conn)) {
1545 h1m = &h1s->res;
1546 errflag = H1S_F_RES_ERROR;
1547 }
1548 else {
1549 h1m = &h1s->req;
1550 errflag = H1S_F_REQ_ERROR;
1551 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001552
Christopher Faulet0e54d542019-07-04 21:22:34 +02001553 if (h1s->flags & errflag)
1554 goto end;
1555
Willy Tarreau37dd54d2018-12-15 14:48:31 +01001556 /* the htx is non-empty thus has at least one block */
Willy Tarreau3815b222018-12-11 19:50:43 +01001557 blk = htx_get_head_blk(chn_htx);
Christopher Faulet9768c262018-10-22 09:34:31 +02001558
Willy Tarreau3815b222018-12-11 19:50:43 +01001559 /* Perform some optimizations to reduce the number of buffer copies.
1560 * First, if the mux's buffer is empty and the htx area contains
1561 * exactly one data block of the same size as the requested count,
1562 * then it's possible to simply swap the caller's buffer with the
1563 * mux's output buffer and adjust offsets and length to match the
1564 * entire DATA HTX block in the middle. In this case we perform a
1565 * true zero-copy operation from end-to-end. This is the situation
1566 * that happens all the time with large files. Second, if this is not
1567 * possible, but the mux's output buffer is empty, we still have an
1568 * opportunity to avoid the copy to the intermediary buffer, by making
1569 * the intermediary buffer's area point to the output buffer's area.
1570 * In this case we want to skip the HTX header to make sure that copies
1571 * remain aligned and that this operation remains possible all the
1572 * time. This goes for headers, data blocks and any data extracted from
1573 * the HTX blocks.
Willy Tarreauc5efa332018-12-05 11:19:27 +01001574 */
1575 if (!b_data(&h1c->obuf)) {
Christopher Faulet192c6a22019-06-11 16:32:24 +02001576 if (htx_nbblks(chn_htx) == 1 &&
Willy Tarreau37dd54d2018-12-15 14:48:31 +01001577 htx_get_blk_type(blk) == HTX_BLK_DATA &&
Willy Tarreau3815b222018-12-11 19:50:43 +01001578 htx_get_blk_value(chn_htx, blk).len == count) {
1579 void *old_area = h1c->obuf.area;
1580
Christopher Faulet6b81df72019-10-01 22:08:43 +02001581 TRACE_PROTO("sending message data (zero-copy)", H1_EV_TX_DATA|H1_EV_TX_BODY, h1c->conn, h1s, chn_htx, (size_t[]){count});
Willy Tarreau3815b222018-12-11 19:50:43 +01001582 h1c->obuf.area = buf->area;
Christopher Fauletc2518a52019-06-25 21:41:02 +02001583 h1c->obuf.head = sizeof(struct htx) + blk->addr;
Willy Tarreau3815b222018-12-11 19:50:43 +01001584 h1c->obuf.data = count;
1585
1586 buf->area = old_area;
1587 buf->data = buf->head = 0;
Christopher Fauletadb22202018-12-12 10:32:09 +01001588
Christopher Faulet6b81df72019-10-01 22:08:43 +02001589 chn_htx = (struct htx *)buf->area;
1590 htx_reset(chn_htx);
1591
Christopher Fauletadb22202018-12-12 10:32:09 +01001592 /* The message is chunked. We need to emit the chunk
1593 * size. We have at least the size of the struct htx to
1594 * write the chunk envelope. It should be enough.
1595 */
1596 if (h1m->flags & H1_MF_CHNK) {
1597 h1_emit_chunk_size(&h1c->obuf, count);
1598 h1_emit_chunk_crlf(&h1c->obuf);
1599 }
1600
Willy Tarreau3815b222018-12-11 19:50:43 +01001601 total += count;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001602 if (h1m->state == H1_MSG_DATA)
1603 TRACE_PROTO((!(h1m->flags & H1_MF_RESP) ? "H1 request payload data xferred" : "H1 response payload data xferred"),
Christopher Faulet08618a72019-10-08 11:59:47 +02001604 H1_EV_TX_DATA|H1_EV_TX_BODY, h1c->conn, h1s,, (size_t[]){count});
Christopher Faulet6b81df72019-10-01 22:08:43 +02001605 else
1606 TRACE_PROTO((!(h1m->flags & H1_MF_RESP) ? "H1 request tunneled data xferred" : "H1 response tunneled data xferred"),
Christopher Faulet08618a72019-10-08 11:59:47 +02001607 H1_EV_TX_DATA|H1_EV_TX_BODY, h1c->conn, h1s,, (size_t[]){count});
Willy Tarreau3815b222018-12-11 19:50:43 +01001608 goto out;
1609 }
Christopher Fauletc2518a52019-06-25 21:41:02 +02001610 tmp.area = h1c->obuf.area + h1c->obuf.head;
Willy Tarreauc5efa332018-12-05 11:19:27 +01001611 }
Christopher Fauletc2518a52019-06-25 21:41:02 +02001612 else
1613 tmp.area = trash.area;
Christopher Faulet9768c262018-10-22 09:34:31 +02001614
Christopher Fauletc2518a52019-06-25 21:41:02 +02001615 tmp.data = 0;
1616 tmp.size = b_room(&h1c->obuf);
Christopher Fauletb2e84162018-12-06 11:39:49 +01001617 while (count && !(h1s->flags & errflag) && blk) {
Christopher Faulet570d1612018-11-26 11:13:57 +01001618 struct htx_sl *sl;
Christopher Faulet9768c262018-10-22 09:34:31 +02001619 struct ist n, v;
Christopher Fauletb2e84162018-12-06 11:39:49 +01001620 enum htx_blk_type type = htx_get_blk_type(blk);
Christopher Faulet9768c262018-10-22 09:34:31 +02001621 uint32_t sz = htx_get_blksz(blk);
Christopher Fauletd9233f02019-10-14 14:01:24 +02001622 uint32_t vlen, chklen;
Christopher Faulet9768c262018-10-22 09:34:31 +02001623
Christopher Fauletb2e84162018-12-06 11:39:49 +01001624 vlen = sz;
Christopher Fauletd9233f02019-10-14 14:01:24 +02001625 if (type != HTX_BLK_DATA && vlen > count)
1626 goto full;
Christopher Faulet9768c262018-10-22 09:34:31 +02001627
Christopher Faulet94b2c762019-05-24 15:28:57 +02001628 if (type == HTX_BLK_UNUSED)
1629 goto nextblk;
Christopher Faulet9768c262018-10-22 09:34:31 +02001630
Christopher Faulet94b2c762019-05-24 15:28:57 +02001631 switch (h1m->state) {
1632 case H1_MSG_RQBEFORE:
1633 if (type != HTX_BLK_REQ_SL)
1634 goto error;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001635 TRACE_USER("sending request headers", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1c->conn, h1s, chn_htx);
Christopher Faulet9768c262018-10-22 09:34:31 +02001636 sl = htx_get_blk_ptr(chn_htx, blk);
Christopher Faulet570d1612018-11-26 11:13:57 +01001637 h1s->meth = sl->info.req.meth;
Christopher Faulet9768c262018-10-22 09:34:31 +02001638 h1_parse_req_vsn(h1m, sl);
Christopher Faulet53a899b2019-10-08 16:38:42 +02001639 if (!h1_format_htx_reqline(sl, &tmp))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001640 goto full;
Christopher Faulet9768c262018-10-22 09:34:31 +02001641 h1m->flags |= H1_MF_XFER_LEN;
Christopher Faulet1f890dd2019-02-18 10:33:16 +01001642 if (sl->flags & HTX_SL_F_BODYLESS)
1643 h1m->flags |= H1_MF_CLEN;
Christopher Faulet9768c262018-10-22 09:34:31 +02001644 h1m->state = H1_MSG_HDR_FIRST;
Christopher Faulet129817b2018-09-20 16:14:40 +02001645 break;
Christopher Faulet129817b2018-09-20 16:14:40 +02001646
Christopher Faulet94b2c762019-05-24 15:28:57 +02001647 case H1_MSG_RPBEFORE:
1648 if (type != HTX_BLK_RES_SL)
1649 goto error;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001650 TRACE_USER("sending response headers", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1c->conn, h1s, chn_htx);
Christopher Faulet9768c262018-10-22 09:34:31 +02001651 sl = htx_get_blk_ptr(chn_htx, blk);
Christopher Faulet570d1612018-11-26 11:13:57 +01001652 h1s->status = sl->info.res.status;
Christopher Faulet9768c262018-10-22 09:34:31 +02001653 h1_parse_res_vsn(h1m, sl);
Christopher Faulet53a899b2019-10-08 16:38:42 +02001654 if (!h1_format_htx_stline(sl, &tmp))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001655 goto full;
Christopher Faulet03599112018-11-27 11:21:21 +01001656 if (sl->flags & HTX_SL_F_XFER_LEN)
Christopher Faulet9768c262018-10-22 09:34:31 +02001657 h1m->flags |= H1_MF_XFER_LEN;
Christopher Fauletd1ebb1e2018-11-28 16:32:50 +01001658 if (sl->info.res.status < 200 &&
1659 (sl->info.res.status == 100 || sl->info.res.status >= 102))
Christopher Fauletada34b62019-05-24 16:36:43 +02001660 h1s->flags |= H1S_F_HAVE_O_CONN;
Christopher Faulet9768c262018-10-22 09:34:31 +02001661 h1m->state = H1_MSG_HDR_FIRST;
1662 break;
1663
Christopher Faulet94b2c762019-05-24 15:28:57 +02001664 case H1_MSG_HDR_FIRST:
1665 case H1_MSG_HDR_NAME:
1666 case H1_MSG_HDR_L2_LWS:
1667 if (type == HTX_BLK_EOH)
1668 goto last_lf;
1669 if (type != HTX_BLK_HDR)
1670 goto error;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001671
Christopher Faulet9768c262018-10-22 09:34:31 +02001672 h1m->state = H1_MSG_HDR_NAME;
1673 n = htx_get_blk_name(chn_htx, blk);
1674 v = htx_get_blk_value(chn_htx, blk);
1675
Christopher Faulet86d144c2019-08-14 16:32:25 +02001676 /* Skip all pseudo-headers */
1677 if (*(n.ptr) == ':')
1678 goto skip_hdr;
1679
Christopher Fauletb045bb22020-02-28 10:42:20 +01001680 if (isteq(n, ist("transfer-encoding")))
Christopher Faulet9768c262018-10-22 09:34:31 +02001681 h1_parse_xfer_enc_header(h1m, v);
Christopher Fauletb045bb22020-02-28 10:42:20 +01001682 else if (isteq(n, ist("content-length"))) {
Christopher Faulet5220ef22019-03-27 15:44:56 +01001683 /* Only skip C-L header with invalid value. */
1684 if (h1_parse_cont_len_header(h1m, &v) < 0)
Willy Tarreau27cd2232019-01-03 21:52:42 +01001685 goto skip_hdr;
1686 }
Christopher Fauletb045bb22020-02-28 10:42:20 +01001687 else if (isteq(n, ist("connection"))) {
Christopher Fauletb992af02019-03-28 15:42:24 +01001688 h1_parse_connection_header(h1m, &v);
Christopher Faulet9768c262018-10-22 09:34:31 +02001689 if (!v.len)
1690 goto skip_hdr;
1691 }
1692
Christopher Faulet67d58092019-10-02 10:51:38 +02001693 /* Skip header if same name is used to add the server name */
1694 if (!(h1m->flags & H1_MF_RESP) && h1c->px->server_id_hdr_name &&
1695 isteqi(n, ist2(h1c->px->server_id_hdr_name, h1c->px->server_id_hdr_len)))
1696 goto skip_hdr;
1697
Christopher Faulet98fbe952019-07-22 16:18:24 +02001698 /* Try to adjust the case of the header name */
1699 if (h1c->px->options2 & (PR_O2_H1_ADJ_BUGCLI|PR_O2_H1_ADJ_BUGSRV))
1700 h1_adjust_case_outgoing_hdr(h1s, h1m, &n);
Christopher Faulet53a899b2019-10-08 16:38:42 +02001701 if (!h1_format_htx_hdr(n, v, &tmp))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001702 goto full;
Christopher Faulet9768c262018-10-22 09:34:31 +02001703 skip_hdr:
1704 h1m->state = H1_MSG_HDR_L2_LWS;
1705 break;
1706
Christopher Faulet94b2c762019-05-24 15:28:57 +02001707 case H1_MSG_LAST_LF:
1708 if (type != HTX_BLK_EOH)
1709 goto error;
1710 last_lf:
Christopher Fauletada34b62019-05-24 16:36:43 +02001711 h1m->state = H1_MSG_LAST_LF;
1712 if (!(h1s->flags & H1S_F_HAVE_O_CONN)) {
Christopher Faulet04f89192019-10-16 09:41:07 +02001713 /* If the reply comes from haproxy while the request is
1714 * not finished, we force the connection close. */
1715 if ((chn_htx->flags & HTX_FL_PROXY_RESP) && h1s->req.state != H1_MSG_DONE) {
1716 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
1717 TRACE_STATE("force close mode (resp)", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1s->h1c->conn, h1s);
1718 }
1719
1720 /* the conn_mode must be processed. So do it */
Christopher Fauleta110ecb2019-06-17 14:07:46 +02001721 n = ist("connection");
Christopher Fauletd1ebb1e2018-11-28 16:32:50 +01001722 v = ist("");
Christopher Fauletb992af02019-03-28 15:42:24 +01001723 h1_process_output_conn_mode(h1s, h1m, &v);
Christopher Fauletd1ebb1e2018-11-28 16:32:50 +01001724 if (v.len) {
Christopher Faulet98fbe952019-07-22 16:18:24 +02001725 /* Try to adjust the case of the header name */
1726 if (h1c->px->options2 & (PR_O2_H1_ADJ_BUGCLI|PR_O2_H1_ADJ_BUGSRV))
1727 h1_adjust_case_outgoing_hdr(h1s, h1m, &n);
Christopher Faulet53a899b2019-10-08 16:38:42 +02001728 if (!h1_format_htx_hdr(n, v, &tmp))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001729 goto full;
Christopher Fauletd1ebb1e2018-11-28 16:32:50 +01001730 }
Christopher Fauletada34b62019-05-24 16:36:43 +02001731 h1s->flags |= H1S_F_HAVE_O_CONN;
Christopher Fauletd1ebb1e2018-11-28 16:32:50 +01001732 }
Willy Tarreau4710d202019-01-03 17:39:54 +01001733
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001734 if ((h1s->meth != HTTP_METH_CONNECT &&
1735 (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 +01001736 (H1_MF_VER_11|H1_MF_XFER_LEN)) ||
1737 (h1s->status >= 200 && h1s->status != 204 && h1s->status != 304 &&
1738 h1s->meth != HTTP_METH_HEAD && !(h1s->meth == HTTP_METH_CONNECT && h1s->status == 200) &&
1739 (h1m->flags & (H1_MF_VER_11|H1_MF_RESP|H1_MF_CLEN|H1_MF_CHNK|H1_MF_XFER_LEN)) ==
1740 (H1_MF_VER_11|H1_MF_RESP|H1_MF_XFER_LEN))) {
Willy Tarreau4710d202019-01-03 17:39:54 +01001741 /* chunking needed but header not seen */
Christopher Faulet7a991a92019-10-04 10:23:51 +02001742 n = ist("transfer-encoding");
1743 v = ist("chunked");
1744 if (h1c->px->options2 & (PR_O2_H1_ADJ_BUGCLI|PR_O2_H1_ADJ_BUGSRV))
1745 h1_adjust_case_outgoing_hdr(h1s, h1m, &n);
Christopher Faulet53a899b2019-10-08 16:38:42 +02001746 if (!h1_format_htx_hdr(n, v, &tmp))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001747 goto full;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001748 TRACE_STATE("add \"Transfer-Encoding: chunked\"", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1c->conn, h1s);
Willy Tarreau4710d202019-01-03 17:39:54 +01001749 h1m->flags |= H1_MF_CHNK;
1750 }
1751
Christopher Faulet72ba6cd2019-09-24 16:20:05 +02001752 /* Now add the server name to a header (if requested) */
1753 if (!(h1s->flags & H1S_F_HAVE_SRV_NAME) &&
1754 !(h1m->flags & H1_MF_RESP) && h1c->px->server_id_hdr_name) {
1755 struct server *srv = objt_server(h1c->conn->target);
1756
1757 if (srv) {
1758 n = ist2(h1c->px->server_id_hdr_name, h1c->px->server_id_hdr_len);
1759 v = ist(srv->id);
Christopher Faulet5cef2a62019-10-02 11:06:13 +02001760
1761 /* Try to adjust the case of the header name */
1762 if (h1c->px->options2 & (PR_O2_H1_ADJ_BUGCLI|PR_O2_H1_ADJ_BUGSRV))
1763 h1_adjust_case_outgoing_hdr(h1s, h1m, &n);
Christopher Faulet53a899b2019-10-08 16:38:42 +02001764 if (!h1_format_htx_hdr(n, v, &tmp))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001765 goto full;
Christopher Faulet72ba6cd2019-09-24 16:20:05 +02001766 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02001767 TRACE_STATE("add server name header", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1c->conn, h1s);
Christopher Faulet72ba6cd2019-09-24 16:20:05 +02001768 h1s->flags |= H1S_F_HAVE_SRV_NAME;
1769 }
1770
Christopher Fauletc2518a52019-06-25 21:41:02 +02001771 if (!chunk_memcat(&tmp, "\r\n", 2))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001772 goto full;
Christopher Faulet9768c262018-10-22 09:34:31 +02001773
Christopher Faulet6b81df72019-10-01 22:08:43 +02001774 TRACE_PROTO((!(h1m->flags & H1_MF_RESP) ? "H1 request headers xferred" : "H1 response headers xferred"),
1775 H1_EV_TX_DATA|H1_EV_TX_HDRS, h1c->conn, h1s);
1776
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001777 if (!(h1m->flags & H1_MF_RESP) && h1s->meth == HTTP_METH_CONNECT) {
1778 /* a CONNECT request is sent to the server. Switch it to tunnel mode. */
1779 h1_set_req_tunnel_mode(h1s);
1780 }
Christopher Fauletf3158e92019-11-15 11:14:23 +01001781 else if ((h1m->flags & H1_MF_RESP) &&
1782 ((h1s->meth == HTTP_METH_CONNECT && h1s->status == 200) || h1s->status == 101)) {
Ilya Shipitsinc02a23f2020-05-06 00:53:22 +05001783 /* a successful reply to a CONNECT or a protocol switching is sent
Christopher Fauletf3158e92019-11-15 11:14:23 +01001784 * to the client. Switch the response to tunnel mode.
1785 */
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001786 h1_set_res_tunnel_mode(h1s);
Christopher Faulet6b81df72019-10-01 22:08:43 +02001787 TRACE_STATE("switch H1 response in tunnel mode", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1c->conn, h1s);
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001788 }
Christopher Fauletb75b5ea2019-05-17 08:37:28 +02001789 else if ((h1m->flags & H1_MF_RESP) &&
1790 h1s->status < 200 && (h1s->status == 100 || h1s->status >= 102)) {
1791 h1m_init_res(&h1s->res);
1792 h1m->flags |= (H1_MF_NO_PHDR|H1_MF_CLEAN_CONN_HDR);
Christopher Fauletada34b62019-05-24 16:36:43 +02001793 h1s->flags &= ~H1S_F_HAVE_O_CONN;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001794 TRACE_STATE("1xx response xferred", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1c->conn, h1s);
Christopher Fauletb75b5ea2019-05-17 08:37:28 +02001795 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02001796 else if ((h1m->flags & H1_MF_RESP) && h1s->meth == HTTP_METH_HEAD) {
Christopher Fauletb8fc3042019-07-01 16:17:30 +02001797 h1m->state = H1_MSG_DONE;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001798 TRACE_STATE("HEAD response processed", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1c->conn, h1s);
1799 }
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001800 else
1801 h1m->state = H1_MSG_DATA;
Christopher Faulet9768c262018-10-22 09:34:31 +02001802 break;
1803
Christopher Faulet94b2c762019-05-24 15:28:57 +02001804 case H1_MSG_DATA:
Christopher Fauletf8db73e2019-07-04 17:12:12 +02001805 case H1_MSG_TUNNEL:
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001806 if (type == HTX_BLK_EOM) {
1807 /* Chunked message without explicit trailers */
1808 if (h1m->flags & H1_MF_CHNK) {
Christopher Fauletc2518a52019-06-25 21:41:02 +02001809 if (!chunk_memcat(&tmp, "0\r\n\r\n", 5))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001810 goto full;
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001811 }
1812 goto done;
1813 }
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001814 else if (type == HTX_BLK_EOT || type == HTX_BLK_TLR) {
Christopher Faulet5433a0b2019-06-27 17:40:14 +02001815 /* If the message is not chunked, never
1816 * add the last chunk. */
1817 if ((h1m->flags & H1_MF_CHNK) && !chunk_memcat(&tmp, "0\r\n", 3))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001818 goto full;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001819 TRACE_PROTO("sending message trailers", H1_EV_TX_DATA|H1_EV_TX_TLRS, h1c->conn, h1s, chn_htx);
Christopher Faulet94b2c762019-05-24 15:28:57 +02001820 goto trailers;
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001821 }
Christopher Faulet94b2c762019-05-24 15:28:57 +02001822 else if (type != HTX_BLK_DATA)
1823 goto error;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001824
1825 TRACE_PROTO("sending message data", H1_EV_TX_DATA|H1_EV_TX_BODY, h1c->conn, h1s, chn_htx, (size_t[]){sz});
Christopher Fauletd9233f02019-10-14 14:01:24 +02001826
1827
1828 if (vlen > count) {
1829 /* Get the maximum amount of data we can xferred */
1830 vlen = count;
1831 }
1832
1833 chklen = 0;
1834 if (h1m->flags & H1_MF_CHNK) {
1835 chklen = b_room(&tmp);
1836 chklen = ((chklen < 16) ? 1 : (chklen < 256) ? 2 :
1837 (chklen < 4096) ? 3 : (chklen < 65536) ? 4 :
1838 (chklen < 1048576) ? 5 : 8);
1839 chklen += 4; /* 2 x CRLF */
1840 }
1841
1842 if (vlen + chklen > b_room(&tmp)) {
1843 /* too large for the buffer */
1844 if (chklen >= b_room(&tmp))
1845 goto full;
1846 vlen = b_room(&tmp) - chklen;
1847 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001848 v = htx_get_blk_value(chn_htx, blk);
Christopher Fauletb2e84162018-12-06 11:39:49 +01001849 v.len = vlen;
Christopher Faulet53a899b2019-10-08 16:38:42 +02001850 if (!h1_format_htx_data(v, &tmp, !!(h1m->flags & H1_MF_CHNK)))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001851 goto full;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001852
1853 if (h1m->state == H1_MSG_DATA)
1854 TRACE_PROTO((!(h1m->flags & H1_MF_RESP) ? "H1 request payload data xferred" : "H1 response payload data xferred"),
Christopher Faulet08618a72019-10-08 11:59:47 +02001855 H1_EV_TX_DATA|H1_EV_TX_BODY, h1c->conn, h1s,, (size_t[]){v.len});
Christopher Faulet6b81df72019-10-01 22:08:43 +02001856 else
1857 TRACE_PROTO((!(h1m->flags & H1_MF_RESP) ? "H1 request tunneled data xferred" : "H1 response tunneled data xferred"),
Christopher Faulet08618a72019-10-08 11:59:47 +02001858 H1_EV_TX_DATA|H1_EV_TX_BODY, h1c->conn, h1s,, (size_t[]){v.len});
Christopher Faulet9768c262018-10-22 09:34:31 +02001859 break;
1860
Christopher Faulet94b2c762019-05-24 15:28:57 +02001861 case H1_MSG_TRAILERS:
1862 if (type == HTX_BLK_EOM)
1863 goto done;
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001864 else if (type != HTX_BLK_TLR && type != HTX_BLK_EOT)
Christopher Faulet94b2c762019-05-24 15:28:57 +02001865 goto error;
1866 trailers:
Christopher Faulet9768c262018-10-22 09:34:31 +02001867 h1m->state = H1_MSG_TRAILERS;
Christopher Faulet5433a0b2019-06-27 17:40:14 +02001868 /* If the message is not chunked, ignore
1869 * trailers. It may happen with H2 messages. */
1870 if (!(h1m->flags & H1_MF_CHNK))
1871 break;
1872
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001873 if (type == HTX_BLK_EOT) {
Christopher Fauletc2518a52019-06-25 21:41:02 +02001874 if (!chunk_memcat(&tmp, "\r\n", 2))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001875 goto full;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001876 TRACE_PROTO((!(h1m->flags & H1_MF_RESP) ? "H1 request trailers xferred" : "H1 response trailers xferred"),
1877 H1_EV_TX_DATA|H1_EV_TX_TLRS, h1c->conn, h1s);
Christopher Faulet32188212018-11-20 18:21:43 +01001878 }
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001879 else { // HTX_BLK_TLR
1880 n = htx_get_blk_name(chn_htx, blk);
1881 v = htx_get_blk_value(chn_htx, blk);
Christopher Faulet98fbe952019-07-22 16:18:24 +02001882
1883 /* Try to adjust the case of the header name */
1884 if (h1c->px->options2 & (PR_O2_H1_ADJ_BUGCLI|PR_O2_H1_ADJ_BUGSRV))
1885 h1_adjust_case_outgoing_hdr(h1s, h1m, &n);
Christopher Faulet53a899b2019-10-08 16:38:42 +02001886 if (!h1_format_htx_hdr(n, v, &tmp))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001887 goto full;
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001888 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001889 break;
1890
Christopher Faulet94b2c762019-05-24 15:28:57 +02001891 case H1_MSG_DONE:
1892 if (type != HTX_BLK_EOM)
1893 goto error;
1894 done:
1895 h1m->state = H1_MSG_DONE;
Christopher Fauletf3158e92019-11-15 11:14:23 +01001896 if (!(h1m->flags & H1_MF_RESP) && h1s->status == 101) {
1897 h1_set_req_tunnel_mode(h1s);
1898 TRACE_STATE("switch H1 request in tunnel mode", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1c->conn, h1s);
1899 }
1900 else if (h1s->h1c->flags & H1C_F_IN_BUSY) {
Christopher Fauletcd67bff2019-06-14 16:54:15 +02001901 h1s->h1c->flags &= ~H1C_F_IN_BUSY;
Willy Tarreau2c1f37d2020-03-04 17:50:02 +01001902 h1c->conn->xprt->subscribe(h1c->conn, h1c->conn->xprt_ctx, SUB_RETRY_RECV, &h1c->wait_event);
Christopher Faulet6b81df72019-10-01 22:08:43 +02001903 TRACE_STATE("h1c no more busy", H1_EV_TX_DATA|H1_EV_H1C_BLK|H1_EV_H1C_WAKE, h1c->conn, h1s);
Christopher Fauletcd67bff2019-06-14 16:54:15 +02001904 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02001905
1906 TRACE_USER((!(h1m->flags & H1_MF_RESP) ? "H1 request fully xferred" : "H1 response fully xferred"),
1907 H1_EV_TX_DATA, h1c->conn, h1s);
Christopher Faulet9768c262018-10-22 09:34:31 +02001908 break;
1909
Christopher Faulet9768c262018-10-22 09:34:31 +02001910 default:
Christopher Faulet94b2c762019-05-24 15:28:57 +02001911 error:
Christopher Faulet6b81df72019-10-01 22:08:43 +02001912 TRACE_PROTO("formatting error", H1_EV_TX_DATA, h1c->conn, h1s);
Christopher Fauletd87d3fa2019-06-26 15:16:28 +02001913 /* Unexpected error during output processing */
Christopher Faulet69b48212019-09-09 10:11:30 +02001914 chn_htx->flags |= HTX_FL_PROCESSING_ERROR;
Christopher Fauleta2ea1582019-05-28 10:35:18 +02001915 h1s->flags |= errflag;
Christopher Fauletd87d3fa2019-06-26 15:16:28 +02001916 h1c->flags |= H1C_F_CS_ERROR;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001917 TRACE_STATE("processing error, set error on h1c/h1s", H1_EV_H1C_ERR|H1_EV_H1S_ERR, h1c->conn, h1s);
1918 TRACE_DEVEL("unexpected error", H1_EV_TX_DATA|H1_EV_STRM_ERR, h1c->conn, h1s);
Christopher Faulet9768c262018-10-22 09:34:31 +02001919 break;
1920 }
Christopher Faulet94b2c762019-05-24 15:28:57 +02001921
1922 nextblk:
Christopher Fauletb2e84162018-12-06 11:39:49 +01001923 total += vlen;
1924 count -= vlen;
1925 if (sz == vlen)
1926 blk = htx_remove_blk(chn_htx, blk);
1927 else {
1928 htx_cut_data_blk(chn_htx, blk, vlen);
1929 break;
1930 }
Christopher Faulet129817b2018-09-20 16:14:40 +02001931 }
1932
Christopher Faulet9768c262018-10-22 09:34:31 +02001933 copy:
Willy Tarreauc5efa332018-12-05 11:19:27 +01001934 /* when the output buffer is empty, tmp shares the same area so that we
1935 * only have to update pointers and lengths.
1936 */
Christopher Fauletc2518a52019-06-25 21:41:02 +02001937 if (tmp.area == h1c->obuf.area + h1c->obuf.head)
1938 h1c->obuf.data = tmp.data;
Willy Tarreauc5efa332018-12-05 11:19:27 +01001939 else
Christopher Fauletc2518a52019-06-25 21:41:02 +02001940 b_putblk(&h1c->obuf, tmp.area, tmp.data);
Christopher Faulet51dbc942018-09-13 09:05:15 +02001941
Willy Tarreau3815b222018-12-11 19:50:43 +01001942 htx_to_buf(chn_htx, buf);
Christopher Faulet6b81df72019-10-01 22:08:43 +02001943 out:
1944 if (!buf_room_for_htx_data(&h1c->obuf)) {
1945 TRACE_STATE("h1c obuf full", H1_EV_TX_DATA|H1_EV_H1S_BLK, h1c->conn, h1s);
Christopher Faulet51dbc942018-09-13 09:05:15 +02001946 h1c->flags |= H1C_F_OUT_FULL;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001947 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001948 end:
Christopher Faulet6b81df72019-10-01 22:08:43 +02001949 TRACE_LEAVE(H1_EV_TX_DATA, h1c->conn, h1s, chn_htx, (size_t[]){total});
Christopher Faulet9768c262018-10-22 09:34:31 +02001950 return total;
Christopher Fauleta61aa542019-10-14 14:17:00 +02001951
1952 full:
1953 TRACE_STATE("h1c obuf full", H1_EV_TX_DATA|H1_EV_H1S_BLK, h1c->conn, h1s);
1954 h1c->flags |= H1C_F_OUT_FULL;
1955 goto copy;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001956}
1957
Christopher Faulet51dbc942018-09-13 09:05:15 +02001958/*********************************************************/
1959/* functions below are I/O callbacks from the connection */
1960/*********************************************************/
Christopher Faulete17fa2f2018-12-11 16:25:36 +01001961static void h1_wake_stream_for_recv(struct h1s *h1s)
1962{
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01001963 if (h1s && h1s->subs && h1s->subs->events & SUB_RETRY_RECV) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001964 TRACE_POINT(H1_EV_STRM_WAKE, h1s->h1c->conn, h1s);
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01001965 tasklet_wakeup(h1s->subs->tasklet);
1966 h1s->subs->events &= ~SUB_RETRY_RECV;
1967 if (!h1s->subs->events)
1968 h1s->subs = NULL;
Christopher Faulete17fa2f2018-12-11 16:25:36 +01001969 }
1970}
1971static void h1_wake_stream_for_send(struct h1s *h1s)
1972{
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01001973 if (h1s && h1s->subs && h1s->subs->events & SUB_RETRY_SEND) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001974 TRACE_POINT(H1_EV_STRM_WAKE, h1s->h1c->conn, h1s);
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01001975 tasklet_wakeup(h1s->subs->tasklet);
1976 h1s->subs->events &= ~SUB_RETRY_SEND;
1977 if (!h1s->subs->events)
1978 h1s->subs = NULL;
Christopher Faulete17fa2f2018-12-11 16:25:36 +01001979 }
1980}
1981
Christopher Faulet51dbc942018-09-13 09:05:15 +02001982/*
1983 * Attempt to read data, and subscribe if none available
1984 */
1985static int h1_recv(struct h1c *h1c)
1986{
1987 struct connection *conn = h1c->conn;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001988 struct h1s *h1s = h1c->h1s;
Olivier Houchard75159a92018-12-03 18:46:09 +01001989 size_t ret = 0, max;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001990 int rcvd = 0;
Willy Tarreau6e59cb52020-02-20 11:11:50 +01001991 int flags = 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001992
Christopher Faulet6b81df72019-10-01 22:08:43 +02001993 TRACE_ENTER(H1_EV_H1C_RECV, h1c->conn);
1994
1995 if (h1c->wait_event.events & SUB_RETRY_RECV) {
1996 TRACE_DEVEL("leaving on sub_recv", H1_EV_H1C_RECV, h1c->conn);
Christopher Fauletc386a882018-12-04 16:06:28 +01001997 return (b_data(&h1c->ibuf));
Christopher Faulet6b81df72019-10-01 22:08:43 +02001998 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02001999
Olivier Houchard75159a92018-12-03 18:46:09 +01002000 if (!h1_recv_allowed(h1c)) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002001 TRACE_DEVEL("leaving on !recv_allowed", H1_EV_H1C_RECV, h1c->conn);
Olivier Houchard75159a92018-12-03 18:46:09 +01002002 rcvd = 1;
Christopher Faulet9768c262018-10-22 09:34:31 +02002003 goto end;
Olivier Houchard75159a92018-12-03 18:46:09 +01002004 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002005
Christopher Fauletf7d5ff32019-04-16 13:55:08 +02002006 if (!h1_get_buf(h1c, &h1c->ibuf)) {
2007 h1c->flags |= H1C_F_IN_ALLOC;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002008 TRACE_STATE("waiting for h1c ibuf allocation", H1_EV_H1C_RECV|H1_EV_H1C_BLK, h1c->conn);
Christopher Faulet9768c262018-10-22 09:34:31 +02002009 goto end;
2010 }
Christopher Faulet1be55f92018-10-02 15:59:23 +02002011
Christopher Fauletf7d5ff32019-04-16 13:55:08 +02002012 if (h1s && (h1s->flags & (H1S_F_BUF_FLUSH|H1S_F_SPLICED_DATA))) {
Willy Tarreaufbdf90a2019-06-03 13:42:54 +02002013 if (!h1s_data_pending(h1s))
Christopher Fauletf7d5ff32019-04-16 13:55:08 +02002014 h1_wake_stream_for_recv(h1s);
2015 rcvd = 1;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002016 TRACE_DEVEL("leaving on (buf_flush|spliced_data)", H1_EV_H1C_RECV, h1c->conn);
Christopher Faulet9768c262018-10-22 09:34:31 +02002017 goto end;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002018 }
2019
Olivier Houchard29a22bc2018-12-04 18:16:45 +01002020 /*
2021 * If we only have a small amount of data, realign it,
2022 * it's probably cheaper than doing 2 recv() calls.
2023 */
2024 if (b_data(&h1c->ibuf) > 0 && b_data(&h1c->ibuf) < 128)
2025 b_slow_realign(&h1c->ibuf, trash.area, 0);
2026
Willy Tarreau6e59cb52020-02-20 11:11:50 +01002027 /* avoid useless reads after first responses */
2028 if (h1s && (h1s->req.state == H1_MSG_RQBEFORE || h1s->res.state == H1_MSG_RPBEFORE))
2029 flags |= CO_RFL_READ_ONCE;
2030
Willy Tarreau45f2b892018-12-05 07:59:27 +01002031 max = buf_room_for_htx_data(&h1c->ibuf);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002032 if (max) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002033 if (h1c->flags & H1C_F_IN_FULL) {
2034 h1c->flags &= ~H1C_F_IN_FULL;
2035 TRACE_STATE("h1c ibuf not full anymore", H1_EV_H1C_RECV|H1_EV_H1C_BLK);
2036 }
Willy Tarreau78f548f2018-12-05 10:02:39 +01002037
Willy Tarreaue0f24ee2018-12-14 10:51:23 +01002038 b_realign_if_empty(&h1c->ibuf);
Willy Tarreau78f548f2018-12-05 10:02:39 +01002039 if (!b_data(&h1c->ibuf)) {
2040 /* try to pre-align the buffer like the rxbufs will be
2041 * to optimize memory copies.
2042 */
Willy Tarreau78f548f2018-12-05 10:02:39 +01002043 h1c->ibuf.head = sizeof(struct htx);
2044 }
Willy Tarreau6e59cb52020-02-20 11:11:50 +01002045 ret = conn->xprt->rcv_buf(conn, conn->xprt_ctx, &h1c->ibuf, max, flags);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002046 }
Christopher Faulet47365272018-10-31 17:40:50 +01002047 if (ret > 0) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002048 TRACE_DATA("data received", H1_EV_H1C_RECV, h1c->conn,,, (size_t[]){ret});
Christopher Faulet51dbc942018-09-13 09:05:15 +02002049 rcvd = 1;
Christopher Fauletfeb11742018-11-29 15:12:34 +01002050 if (h1s && h1s->cs) {
Christopher Faulet37e36072018-12-04 15:54:12 +01002051 h1s->cs->flags |= (CS_FL_READ_PARTIAL|CS_FL_RCV_MORE);
Christopher Fauletfeb11742018-11-29 15:12:34 +01002052 if (h1s->csinfo.t_idle == -1)
2053 h1s->csinfo.t_idle = tv_ms_elapsed(&h1s->csinfo.tv_create, &now) - h1s->csinfo.t_handshake;
2054 }
Christopher Faulet47365272018-10-31 17:40:50 +01002055 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002056
Olivier Houchardcc3fec82019-07-26 15:11:11 +02002057 if (ret > 0 || !h1_recv_allowed(h1c) || !buf_room_for_htx_data(&h1c->ibuf)) {
Christopher Faulet81d48432018-11-19 21:22:43 +01002058 rcvd = 1;
Christopher Fauletcf56b992018-12-11 16:12:31 +01002059 goto end;
2060 }
2061
Christopher Faulet6b81df72019-10-01 22:08:43 +02002062 TRACE_STATE("failed to receive data, subscribing", H1_EV_H1C_RECV, h1c->conn);
Olivier Houcharde179d0e2019-03-21 18:27:17 +01002063 conn->xprt->subscribe(conn, conn->xprt_ctx, SUB_RETRY_RECV, &h1c->wait_event);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002064
Christopher Faulet9768c262018-10-22 09:34:31 +02002065 end:
Christopher Faulete17fa2f2018-12-11 16:25:36 +01002066 if (ret > 0 || (conn->flags & CO_FL_ERROR) || conn_xprt_read0_pending(conn))
2067 h1_wake_stream_for_recv(h1s);
Olivier Houchard75159a92018-12-03 18:46:09 +01002068
Willy Tarreauc493c9c2019-06-03 14:18:22 +02002069 if (conn_xprt_read0_pending(conn) && h1s) {
2070 h1s->flags |= H1S_F_REOS;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002071 TRACE_STATE("read0 on connection", H1_EV_H1C_RECV, conn, h1s);
Willy Tarreaufbdf90a2019-06-03 13:42:54 +02002072 rcvd = 1;
2073 }
2074
Christopher Faulet51dbc942018-09-13 09:05:15 +02002075 if (!b_data(&h1c->ibuf))
2076 h1_release_buf(h1c, &h1c->ibuf);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002077 else if (!buf_room_for_htx_data(&h1c->ibuf)) {
Christopher Faulet51dbc942018-09-13 09:05:15 +02002078 h1c->flags |= H1C_F_IN_FULL;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002079 TRACE_STATE("h1c ibuf full", H1_EV_H1C_RECV|H1_EV_H1C_BLK);
2080 }
2081
2082 TRACE_LEAVE(H1_EV_H1C_RECV, h1c->conn);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002083 return rcvd;
2084}
2085
2086
2087/*
2088 * Try to send data if possible
2089 */
2090static int h1_send(struct h1c *h1c)
2091{
2092 struct connection *conn = h1c->conn;
2093 unsigned int flags = 0;
2094 size_t ret;
2095 int sent = 0;
2096
Christopher Faulet6b81df72019-10-01 22:08:43 +02002097 TRACE_ENTER(H1_EV_H1C_SEND, h1c->conn);
2098
2099 if (conn->flags & CO_FL_ERROR) {
2100 TRACE_DEVEL("leaving on connection error", H1_EV_H1C_SEND, h1c->conn);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002101 return 0;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002102 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002103
2104 if (!b_data(&h1c->obuf))
2105 goto end;
2106
Christopher Faulet46230362019-10-17 16:04:20 +02002107 if (h1c->flags & H1C_F_CO_MSG_MORE)
Christopher Faulet51dbc942018-09-13 09:05:15 +02002108 flags |= CO_SFL_MSG_MORE;
Christopher Faulet46230362019-10-17 16:04:20 +02002109 if (h1c->flags & H1C_F_CO_STREAMER)
2110 flags |= CO_SFL_STREAMER;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002111
Olivier Houcharde179d0e2019-03-21 18:27:17 +01002112 ret = conn->xprt->snd_buf(conn, conn->xprt_ctx, &h1c->obuf, b_data(&h1c->obuf), flags);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002113 if (ret > 0) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002114 TRACE_DATA("data sent", H1_EV_H1C_SEND, h1c->conn,,, (size_t[]){ret});
2115 if (h1c->flags & H1C_F_OUT_FULL) {
2116 h1c->flags &= ~H1C_F_OUT_FULL;
2117 TRACE_STATE("h1c obuf not full anymore", H1_EV_STRM_SEND|H1_EV_H1S_BLK, h1c->conn);
2118 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002119 b_del(&h1c->obuf, ret);
2120 sent = 1;
2121 }
2122
Christopher Faulet145aa472018-12-06 10:56:20 +01002123 if (conn->flags & (CO_FL_ERROR|CO_FL_SOCK_WR_SH)) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002124 TRACE_DEVEL("connection error or output closed", H1_EV_H1C_SEND, h1c->conn);
Christopher Faulet145aa472018-12-06 10:56:20 +01002125 /* error or output closed, nothing to send, clear the buffer to release it */
2126 b_reset(&h1c->obuf);
2127 }
2128
Christopher Faulet51dbc942018-09-13 09:05:15 +02002129 end:
Christopher Faulete17fa2f2018-12-11 16:25:36 +01002130 if (!(h1c->flags & H1C_F_OUT_FULL))
2131 h1_wake_stream_for_send(h1c->h1s);
Olivier Houchard75159a92018-12-03 18:46:09 +01002132
Christopher Faulet51dbc942018-09-13 09:05:15 +02002133 /* We're done, no more to send */
2134 if (!b_data(&h1c->obuf)) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002135 TRACE_DEVEL("leaving with everything sent", H1_EV_H1C_SEND, h1c->conn);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002136 h1_release_buf(h1c, &h1c->obuf);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002137 if (h1c->flags & H1C_F_CS_SHUTW_NOW) {
2138 TRACE_STATE("process pending shutdown for writes", H1_EV_H1C_SEND, h1c->conn);
Christopher Faulet666a0c42019-01-08 11:12:04 +01002139 h1_shutw_conn(conn, CS_SHW_NORMAL);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002140 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002141 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02002142 else if (!(h1c->wait_event.events & SUB_RETRY_SEND)) {
2143 TRACE_STATE("more data to send, subscribing", H1_EV_H1C_SEND, h1c->conn);
Olivier Houcharde179d0e2019-03-21 18:27:17 +01002144 conn->xprt->subscribe(conn, conn->xprt_ctx, SUB_RETRY_SEND, &h1c->wait_event);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002145 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002146
Christopher Faulet6b81df72019-10-01 22:08:43 +02002147 TRACE_LEAVE(H1_EV_H1C_SEND, h1c->conn);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002148 return sent;
2149}
2150
Christopher Faulet51dbc942018-09-13 09:05:15 +02002151
2152/* callback called on any event by the connection handler.
2153 * It applies changes and returns zero, or < 0 if it wants immediate
2154 * destruction of the connection.
2155 */
2156static int h1_process(struct h1c * h1c)
2157{
2158 struct connection *conn = h1c->conn;
Christopher Fauletfeb11742018-11-29 15:12:34 +01002159 struct h1s *h1s = h1c->h1s;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002160
Christopher Faulet6b81df72019-10-01 22:08:43 +02002161 TRACE_ENTER(H1_EV_H1C_WAKE, conn);
2162
Willy Tarreau3d2ee552018-12-19 14:12:10 +01002163 if (!conn->ctx)
Christopher Faulet51dbc942018-09-13 09:05:15 +02002164 return -1;
2165
Christopher Fauletfeb11742018-11-29 15:12:34 +01002166 if (!h1s) {
Christopher Faulet37243bc2019-07-11 15:40:25 +02002167 if (h1c->flags & (H1C_F_CS_ERROR|H1C_F_CS_SHUTDOWN) ||
Christopher Fauletaaa67bc2019-12-05 10:23:37 +01002168 conn->flags & (CO_FL_ERROR|CO_FL_SOCK_RD_SH|CO_FL_SOCK_WR_SH))
Christopher Faulet539e0292018-11-19 10:40:09 +01002169 goto release;
Christopher Fauletaaa67bc2019-12-05 10:23:37 +01002170 if (!conn_is_back(conn) && (h1c->flags & H1C_F_CS_IDLE)) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002171 TRACE_STATE("K/A incoming connection, create new H1 stream", H1_EV_H1C_WAKE, conn);
Olivier Houchardf502aca2018-12-14 19:42:40 +01002172 if (!h1s_create(h1c, NULL, NULL))
Christopher Faulet539e0292018-11-19 10:40:09 +01002173 goto release;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002174 }
Christopher Faulet1a7ad7a2018-12-04 16:10:44 +01002175 else
Olivier Houcharde7284782018-12-06 18:54:54 +01002176 goto end;
Christopher Fauletfeb11742018-11-29 15:12:34 +01002177 h1s = h1c->h1s;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002178 }
2179
Christopher Fauletfeb11742018-11-29 15:12:34 +01002180 if (b_data(&h1c->ibuf) && h1s->csinfo.t_idle == -1)
2181 h1s->csinfo.t_idle = tv_ms_elapsed(&h1s->csinfo.tv_create, &now) - h1s->csinfo.t_handshake;
2182
Christopher Faulet6b81df72019-10-01 22:08:43 +02002183 if (conn_xprt_read0_pending(conn)) {
Willy Tarreauc493c9c2019-06-03 14:18:22 +02002184 h1s->flags |= H1S_F_REOS;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002185 TRACE_STATE("read0 on connection", H1_EV_H1C_RECV, conn, h1s);
2186 }
Willy Tarreauc493c9c2019-06-03 14:18:22 +02002187
Willy Tarreaufbdf90a2019-06-03 13:42:54 +02002188 if (!h1s_data_pending(h1s) && h1s && h1s->cs && h1s->cs->data_cb->wake &&
Willy Tarreauc493c9c2019-06-03 14:18:22 +02002189 (h1s->flags & H1S_F_REOS || h1c->flags & H1C_F_CS_ERROR ||
Olivier Houchard32d75ed2019-01-14 17:27:23 +01002190 conn->flags & (CO_FL_ERROR | CO_FL_SOCK_WR_SH))) {
Olivier Houchard75159a92018-12-03 18:46:09 +01002191 if (h1c->flags & H1C_F_CS_ERROR || conn->flags & CO_FL_ERROR)
Willy Tarreauc493c9c2019-06-03 14:18:22 +02002192 h1s->cs->flags |= CS_FL_ERROR;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002193 TRACE_POINT(H1_EV_STRM_WAKE, h1c->conn, h1s);
Olivier Houchard75159a92018-12-03 18:46:09 +01002194 h1s->cs->data_cb->wake(h1s->cs);
2195 }
Christopher Faulet47365272018-10-31 17:40:50 +01002196 end:
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002197 if (h1c->task) {
2198 h1c->task->expire = TICK_ETERNITY;
2199 if (b_data(&h1c->obuf)) {
Christopher Faulet666a0c42019-01-08 11:12:04 +01002200 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 +01002201 ? h1c->shut_timeout
2202 : h1c->timeout));
2203 task_queue(h1c->task);
2204 }
2205 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02002206 TRACE_LEAVE(H1_EV_H1C_WAKE, conn);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002207 return 0;
Christopher Faulet539e0292018-11-19 10:40:09 +01002208
2209 release:
Christopher Faulet73c12072019-04-08 11:23:22 +02002210 h1_release(h1c);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002211 TRACE_DEVEL("leaving after releasing the connection", H1_EV_H1C_WAKE);
Christopher Faulet539e0292018-11-19 10:40:09 +01002212 return -1;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002213}
2214
2215static struct task *h1_io_cb(struct task *t, void *ctx, unsigned short status)
2216{
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01002217 struct connection *conn;
2218 struct tasklet *tl = (struct tasklet *)t;
2219 int conn_in_list;
2220 struct h1c *h1c;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002221 int ret = 0;
2222
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01002223
2224 HA_SPIN_LOCK(OTHER_LOCK, &toremove_lock[tid]);
2225 if (tl->context == NULL) {
2226 /* The connection has been taken over by another thread,
2227 * we're no longer responsible for it, so just free the
2228 * tasklet, and do nothing.
2229 */
2230 HA_SPIN_UNLOCK(OTHER_LOCK, &toremove_lock[tid]);
2231 tasklet_free(tl);
2232 return NULL;
2233 }
2234 h1c = ctx;
2235 conn = h1c->conn;
2236
2237 TRACE_POINT(H1_EV_H1C_WAKE, conn);
2238
2239 /* Remove the connection from the list, to be sure nobody attempts
2240 * to use it while we handle the I/O events
2241 */
2242 conn_in_list = conn->flags & CO_FL_LIST_MASK;
2243 if (conn_in_list)
2244 MT_LIST_DEL(&conn->list);
2245
2246 HA_SPIN_UNLOCK(OTHER_LOCK, &toremove_lock[tid]);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002247
Willy Tarreau4f6516d2018-12-19 13:59:17 +01002248 if (!(h1c->wait_event.events & SUB_RETRY_SEND))
Christopher Faulet51dbc942018-09-13 09:05:15 +02002249 ret = h1_send(h1c);
Willy Tarreau4f6516d2018-12-19 13:59:17 +01002250 if (!(h1c->wait_event.events & SUB_RETRY_RECV))
Christopher Faulet51dbc942018-09-13 09:05:15 +02002251 ret |= h1_recv(h1c);
Christopher Faulet81d48432018-11-19 21:22:43 +01002252 if (ret || !h1c->h1s)
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01002253 ret = h1_process(h1c);
2254 /* If we were in an idle list, we want to add it back into it,
2255 * unless h1_process() returned -1, which mean it has destroyed
2256 * the connection (testing !ret is enough, if h1_process() wasn't
2257 * called then ret will be 0 anyway.
2258 */
2259 if (!ret && conn_in_list) {
2260 struct server *srv = objt_server(conn->target);
2261
2262 if (conn_in_list == CO_FL_SAFE_LIST)
2263 MT_LIST_ADDQ(&srv->safe_conns[tid], &conn->list);
2264 else
2265 MT_LIST_ADDQ(&srv->idle_conns[tid], &conn->list);
2266 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002267 return NULL;
2268}
2269
Olivier Houchard9a86fcb2018-12-11 16:47:14 +01002270static void h1_reset(struct connection *conn)
2271{
Olivier Houchard9a86fcb2018-12-11 16:47:14 +01002272
Olivier Houchard9a86fcb2018-12-11 16:47:14 +01002273}
Christopher Faulet51dbc942018-09-13 09:05:15 +02002274
2275static int h1_wake(struct connection *conn)
2276{
Willy Tarreau3d2ee552018-12-19 14:12:10 +01002277 struct h1c *h1c = conn->ctx;
Olivier Houchard75159a92018-12-03 18:46:09 +01002278 int ret;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002279
Christopher Faulet6b81df72019-10-01 22:08:43 +02002280 TRACE_POINT(H1_EV_H1C_WAKE, conn);
2281
Christopher Faulet539e0292018-11-19 10:40:09 +01002282 h1_send(h1c);
Olivier Houchard75159a92018-12-03 18:46:09 +01002283 ret = h1_process(h1c);
2284 if (ret == 0) {
2285 struct h1s *h1s = h1c->h1s;
2286
Christopher Faulet6b81df72019-10-01 22:08:43 +02002287 if (h1s && h1s->cs && h1s->cs->data_cb->wake) {
2288 TRACE_POINT(H1_EV_STRM_WAKE, h1c->conn, h1s);
Olivier Houchard75159a92018-12-03 18:46:09 +01002289 ret = h1s->cs->data_cb->wake(h1s->cs);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002290 }
Olivier Houchard75159a92018-12-03 18:46:09 +01002291 }
2292 return ret;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002293}
2294
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002295/* Connection timeout management. The principle is that if there's no receipt
2296 * nor sending for a certain amount of time, the connection is closed.
2297 */
2298static struct task *h1_timeout_task(struct task *t, void *context, unsigned short state)
2299{
2300 struct h1c *h1c = context;
2301 int expired = tick_is_expired(t->expire, now_ms);
2302
Christopher Faulet6b81df72019-10-01 22:08:43 +02002303 TRACE_POINT(H1_EV_H1C_WAKE, h1c ? h1c->conn : NULL);
2304
2305 if (!expired && h1c) {
2306 TRACE_DEVEL("leaving (not expired)", H1_EV_H1C_WAKE, h1c->conn);
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002307 return t;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002308 }
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002309
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01002310 /* We're about to destroy the connection, so make sure nobody attempts
2311 * to steal it from us.
2312 */
2313 HA_SPIN_LOCK(OTHER_LOCK, &toremove_lock[tid]);
2314
2315 if (h1c && h1c->conn->flags & CO_FL_LIST_MASK)
2316 MT_LIST_DEL(&h1c->conn->list);
2317
2318 /* Somebody already stole the connection from us, so we should not
2319 * free it, we just have to free the task.
2320 */
2321 if (!t->context)
2322 h1c = NULL;
2323
2324 HA_SPIN_UNLOCK(OTHER_LOCK, &toremove_lock[tid]);
2325
Olivier Houchard3f795f72019-04-17 22:51:06 +02002326 task_destroy(t);
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002327
2328 if (!h1c) {
2329 /* resources were already deleted */
Christopher Faulet6b81df72019-10-01 22:08:43 +02002330 TRACE_DEVEL("leaving (not more h1c)", H1_EV_H1C_WAKE);
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002331 return NULL;
2332 }
2333
2334 h1c->task = NULL;
2335 /* If a stream is still attached to the mux, just set an error and wait
2336 * for the stream's timeout. Otherwise, release the mux. This is only ok
2337 * because same timeouts are used.
2338 */
Christopher Faulet6b81df72019-10-01 22:08:43 +02002339 if (h1c->h1s && h1c->h1s->cs) {
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002340 h1c->flags |= H1C_F_CS_ERROR;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002341 TRACE_STATE("error on h1c, h1s still attached (expired)", H1_EV_H1C_WAKE|H1_EV_H1C_ERR, h1c->conn, h1c->h1s);
2342 }
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002343 else
Christopher Faulet73c12072019-04-08 11:23:22 +02002344 h1_release(h1c);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002345
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002346 return NULL;
2347}
2348
Christopher Faulet51dbc942018-09-13 09:05:15 +02002349/*******************************************/
2350/* functions below are used by the streams */
2351/*******************************************/
Christopher Faulet73c12072019-04-08 11:23:22 +02002352
Christopher Faulet51dbc942018-09-13 09:05:15 +02002353/*
2354 * Attach a new stream to a connection
2355 * (Used for outgoing connections)
2356 */
Olivier Houchardf502aca2018-12-14 19:42:40 +01002357static struct conn_stream *h1_attach(struct connection *conn, struct session *sess)
Christopher Faulet51dbc942018-09-13 09:05:15 +02002358{
Willy Tarreau3d2ee552018-12-19 14:12:10 +01002359 struct h1c *h1c = conn->ctx;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002360 struct conn_stream *cs = NULL;
2361 struct h1s *h1s;
2362
Christopher Faulet6b81df72019-10-01 22:08:43 +02002363 TRACE_ENTER(H1_EV_STRM_NEW, conn);
2364 if (h1c->flags & H1C_F_CS_ERROR) {
2365 TRACE_DEVEL("leaving on h1c error", H1_EV_STRM_NEW|H1_EV_STRM_END|H1_EV_STRM_ERR, conn);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002366 goto end;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002367 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002368
2369 cs = cs_new(h1c->conn);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002370 if (!cs) {
2371 TRACE_DEVEL("leaving on CS allocation failure", H1_EV_STRM_NEW|H1_EV_STRM_END|H1_EV_STRM_ERR, conn);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002372 goto end;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002373 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002374
Olivier Houchardf502aca2018-12-14 19:42:40 +01002375 h1s = h1s_create(h1c, cs, sess);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002376 if (h1s == NULL) {
2377 TRACE_DEVEL("leaving on h1s creation failure", H1_EV_STRM_NEW|H1_EV_STRM_END|H1_EV_STRM_ERR, conn);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002378 goto end;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002379 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002380
Christopher Faulet6b81df72019-10-01 22:08:43 +02002381 TRACE_LEAVE(H1_EV_STRM_NEW, conn, h1s);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002382 return cs;
2383 end:
2384 cs_free(cs);
2385 return NULL;
2386}
2387
2388/* Retrieves a valid conn_stream from this connection, or returns NULL. For
2389 * this mux, it's easy as we can only store a single conn_stream.
2390 */
2391static const struct conn_stream *h1_get_first_cs(const struct connection *conn)
2392{
Willy Tarreau3d2ee552018-12-19 14:12:10 +01002393 struct h1c *h1c = conn->ctx;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002394 struct h1s *h1s = h1c->h1s;
2395
2396 if (h1s)
2397 return h1s->cs;
2398
2399 return NULL;
2400}
2401
Christopher Faulet73c12072019-04-08 11:23:22 +02002402static void h1_destroy(void *ctx)
Christopher Faulet51dbc942018-09-13 09:05:15 +02002403{
Christopher Faulet73c12072019-04-08 11:23:22 +02002404 struct h1c *h1c = ctx;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002405
Christopher Faulet6b81df72019-10-01 22:08:43 +02002406 TRACE_POINT(H1_EV_H1C_END, h1c->conn);
Christopher Faulet39a96ee2019-04-08 10:52:21 +02002407 if (!h1c->h1s || !h1c->conn || h1c->conn->ctx != h1c)
Christopher Faulet73c12072019-04-08 11:23:22 +02002408 h1_release(h1c);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002409}
2410
2411/*
2412 * Detach the stream from the connection and possibly release the connection.
2413 */
2414static void h1_detach(struct conn_stream *cs)
2415{
2416 struct h1s *h1s = cs->ctx;
2417 struct h1c *h1c;
Olivier Houchardf502aca2018-12-14 19:42:40 +01002418 struct session *sess;
Olivier Houchard8a786902018-12-15 16:05:40 +01002419 int is_not_first;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002420
Christopher Faulet6b81df72019-10-01 22:08:43 +02002421 TRACE_ENTER(H1_EV_STRM_END, h1s ? h1s->h1c->conn : NULL, h1s);
2422
Christopher Faulet51dbc942018-09-13 09:05:15 +02002423 cs->ctx = NULL;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002424 if (!h1s) {
2425 TRACE_LEAVE(H1_EV_STRM_END);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002426 return;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002427 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002428
Olivier Houchardf502aca2018-12-14 19:42:40 +01002429 sess = h1s->sess;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002430 h1c = h1s->h1c;
2431 h1s->cs = NULL;
2432
Olivier Houchard8a786902018-12-15 16:05:40 +01002433 is_not_first = h1s->flags & H1S_F_NOT_FIRST;
2434 h1s_destroy(h1s);
2435
Christopher Fauletaaa67bc2019-12-05 10:23:37 +01002436 if (conn_is_back(h1c->conn) && (h1c->flags & H1C_F_CS_IDLE)) {
Christopher Fauletf1204b82019-07-19 14:51:06 +02002437 /* If there are any excess server data in the input buffer,
2438 * release it and close the connection ASAP (some data may
2439 * remain in the output buffer). This happens if a server sends
2440 * invalid responses. So in such case, we don't want to reuse
2441 * the connection
Christopher Faulet03627242019-07-19 11:34:08 +02002442 */
Christopher Fauletf1204b82019-07-19 14:51:06 +02002443 if (b_data(&h1c->ibuf)) {
2444 h1_release_buf(h1c, &h1c->ibuf);
Christopher Fauletaaa67bc2019-12-05 10:23:37 +01002445 h1c->flags = (h1c->flags & ~H1C_F_CS_IDLE) | H1C_F_CS_SHUTW_NOW;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002446 TRACE_DEVEL("remaining data on detach, kill connection", H1_EV_STRM_END|H1_EV_H1C_END);
Christopher Fauletf1204b82019-07-19 14:51:06 +02002447 goto release;
2448 }
Christopher Faulet03627242019-07-19 11:34:08 +02002449
Christopher Faulet9400a392018-11-23 23:10:39 +01002450 /* Never ever allow to reuse a connection from a non-reuse backend */
Olivier Houchard44d59142018-12-13 18:46:22 +01002451 if ((h1c->px->options & PR_O_REUSE_MASK) == PR_O_REUSE_NEVR)
Christopher Faulet9400a392018-11-23 23:10:39 +01002452 h1c->conn->flags |= CO_FL_PRIVATE;
2453
Olivier Houchard2444aa52020-01-20 13:56:01 +01002454 if (!(h1c->conn->owner) && (h1c->conn->flags & CO_FL_PRIVATE)) {
Olivier Houchardf502aca2018-12-14 19:42:40 +01002455 h1c->conn->owner = sess;
Olivier Houchard351411f2018-12-27 17:20:54 +01002456 if (!session_add_conn(sess, h1c->conn, h1c->conn->target)) {
2457 h1c->conn->owner = NULL;
Olivier Houchard2444aa52020-01-20 13:56:01 +01002458 h1c->conn->mux->destroy(h1c);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002459 goto end;
Olivier Houchard351411f2018-12-27 17:20:54 +01002460 }
Olivier Houchard2444aa52020-01-20 13:56:01 +01002461 if (session_check_idle_conn(sess, h1c->conn)) {
Olivier Houcharda4d4fdf2018-12-14 19:27:06 +01002462 /* The connection got destroyed, let's leave */
Christopher Faulet6b81df72019-10-01 22:08:43 +02002463 TRACE_DEVEL("outgoing connection killed", H1_EV_STRM_END|H1_EV_H1C_END);
2464 goto end;
2465 }
Olivier Houcharda4d4fdf2018-12-14 19:27:06 +01002466 }
Olivier Houchard2444aa52020-01-20 13:56:01 +01002467 if (!(h1c->conn->flags & CO_FL_PRIVATE)) {
2468 if (h1c->conn->owner == sess)
2469 h1c->conn->owner = NULL;
Olivier Houchard3c49c1b2020-03-22 19:56:03 +01002470 h1c->conn->xprt->subscribe(h1c->conn, h1c->conn->xprt_ctx, SUB_RETRY_RECV, &h1c->wait_event);
Olivier Houcharddc2f2752020-02-13 19:12:07 +01002471 if (!srv_add_to_idle_list(objt_server(h1c->conn->target), h1c->conn, is_not_first)) {
Olivier Houchard2444aa52020-01-20 13:56:01 +01002472 /* The server doesn't want it, let's kill the connection right away */
2473 h1c->conn->mux->destroy(h1c);
2474 TRACE_DEVEL("outgoing connection killed", H1_EV_STRM_END|H1_EV_H1C_END);
2475 goto end;
Christopher Faulet9400a392018-11-23 23:10:39 +01002476 }
Olivier Houchard199d4fa2020-03-22 23:25:51 +01002477 /* At this point, the connection has been added to the
2478 * server idle list, so another thread may already have
2479 * hijacked it, so we can't do anything with it.
2480 */
Olivier Houchard2444aa52020-01-20 13:56:01 +01002481 return;
Christopher Faulet9400a392018-11-23 23:10:39 +01002482 }
2483 }
2484
Christopher Fauletf1204b82019-07-19 14:51:06 +02002485 release:
Christopher Faulet3ac0f432019-06-28 17:41:42 +02002486 /* We don't want to close right now unless the connection is in error or shut down for writes */
Christopher Faulet37243bc2019-07-11 15:40:25 +02002487 if ((h1c->flags & (H1C_F_CS_ERROR|H1C_F_CS_SHUTDOWN|H1C_F_UPG_H2C)) ||
2488 (h1c->conn->flags & (CO_FL_ERROR|CO_FL_SOCK_WR_SH)) ||
2489 ((h1c->flags & H1C_F_CS_SHUTW_NOW) && !b_data(&h1c->obuf)) ||
Christopher Faulet6b81df72019-10-01 22:08:43 +02002490 !h1c->conn->owner) {
2491 TRACE_DEVEL("killing dead connection", H1_EV_STRM_END, h1c->conn);
Christopher Faulet73c12072019-04-08 11:23:22 +02002492 h1_release(h1c);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002493 }
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002494 else {
Olivier Houchard69664412020-03-25 12:24:11 +01002495 /* If we have a new request, process it immediately */
Olivier Houchardc3500c32020-03-25 17:05:21 +01002496 if (unlikely(b_data(&h1c->ibuf)))
Olivier Houchard69664412020-03-25 12:24:11 +01002497 h1_process(h1c);
2498 else
2499 h1c->conn->xprt->subscribe(h1c->conn, h1c->conn->xprt_ctx, SUB_RETRY_RECV, &h1c->wait_event);
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002500 if (h1c->task) {
2501 h1c->task->expire = TICK_ETERNITY;
Willy Tarreauca397472020-04-28 19:48:41 +02002502 if ((!h1c->h1s && !conn_is_back(h1c->conn)) || b_data(&h1c->obuf)) {
2503 /* front connections waiting for a stream, as well as any connection with
2504 * pending data, need a timeout.
2505 */
Christopher Faulet666a0c42019-01-08 11:12:04 +01002506 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 +01002507 ? h1c->shut_timeout
2508 : h1c->timeout));
2509 task_queue(h1c->task);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002510 TRACE_DEVEL("refreshing connection's timeout", H1_EV_STRM_END, h1c->conn);
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002511 }
2512 }
2513 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02002514 end:
2515 TRACE_LEAVE(H1_EV_STRM_END);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002516}
2517
2518
2519static void h1_shutr(struct conn_stream *cs, enum cs_shr_mode mode)
2520{
2521 struct h1s *h1s = cs->ctx;
Christopher Faulet7f366362019-04-08 10:51:20 +02002522 struct h1c *h1c;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002523
2524 if (!h1s)
2525 return;
Christopher Faulet7f366362019-04-08 10:51:20 +02002526 h1c = h1s->h1c;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002527
Christopher Faulet6b81df72019-10-01 22:08:43 +02002528 TRACE_ENTER(H1_EV_STRM_SHUT, h1c->conn, h1s);
2529
2530 if (cs->flags & CS_FL_KILL_CONN) {
2531 TRACE_STATE("stream wants to kill the connection", H1_EV_STRM_SHUT, h1c->conn, h1s);
2532 goto do_shutr;
2533 }
2534 if (h1c->conn->flags & (CO_FL_ERROR | CO_FL_SOCK_RD_SH | CO_FL_SOCK_WR_SH)) {
2535 TRACE_STATE("shutdown on connection (error|rd_sh|wr_sh)", H1_EV_STRM_SHUT, h1c->conn, h1s);
Christopher Faulet7f366362019-04-08 10:51:20 +02002536 goto do_shutr;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002537 }
Christopher Faulet7f366362019-04-08 10:51:20 +02002538
Christopher Faulet6b81df72019-10-01 22:08:43 +02002539 if ((h1c->flags & H1C_F_UPG_H2C) || (h1s->flags & H1S_F_WANT_KAL)) {
2540 TRACE_STATE("keep connection alive (upg_h2c|want_kal)", H1_EV_STRM_SHUT, h1c->conn, h1s);
2541 goto end;
2542 }
Christopher Fauletf2824e62018-10-01 12:12:37 +02002543
Christopher Faulet7f366362019-04-08 10:51:20 +02002544 do_shutr:
Christopher Faulet51dbc942018-09-13 09:05:15 +02002545 /* NOTE: Be sure to handle abort (cf. h2_shutr) */
2546 if (cs->flags & CS_FL_SHR)
Christopher Faulet6b81df72019-10-01 22:08:43 +02002547 goto end;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002548 if (conn_xprt_ready(cs->conn) && cs->conn->xprt->shutr)
Olivier Houcharde179d0e2019-03-21 18:27:17 +01002549 cs->conn->xprt->shutr(cs->conn, cs->conn->xprt_ctx,
Christopher Faulet6b81df72019-10-01 22:08:43 +02002550 (mode == CS_SHR_DRAIN));
Christopher Faulet6b81df72019-10-01 22:08:43 +02002551 end:
2552 TRACE_LEAVE(H1_EV_STRM_SHUT, h1c->conn, h1s);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002553}
2554
2555static void h1_shutw(struct conn_stream *cs, enum cs_shw_mode mode)
2556{
2557 struct h1s *h1s = cs->ctx;
2558 struct h1c *h1c;
2559
2560 if (!h1s)
2561 return;
2562 h1c = h1s->h1c;
2563
Christopher Faulet6b81df72019-10-01 22:08:43 +02002564 TRACE_ENTER(H1_EV_STRM_SHUT, h1c->conn, h1s);
2565
2566 if (cs->flags & CS_FL_KILL_CONN) {
2567 TRACE_STATE("stream wants to kill the connection", H1_EV_STRM_SHUT, h1c->conn, h1s);
Christopher Faulet7f366362019-04-08 10:51:20 +02002568 goto do_shutw;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002569 }
2570 if (h1c->conn->flags & (CO_FL_ERROR | CO_FL_SOCK_RD_SH | CO_FL_SOCK_WR_SH)) {
2571 TRACE_STATE("shutdown on connection (error|rd_sh|wr_sh)", H1_EV_STRM_SHUT, h1c->conn, h1s);
2572 goto do_shutw;
2573 }
Olivier Houchardd2e88c72018-12-19 15:55:23 +01002574
Christopher Faulet0ef372a2019-04-08 10:57:20 +02002575 if ((h1c->flags & H1C_F_UPG_H2C) ||
Christopher Faulet6b81df72019-10-01 22:08:43 +02002576 ((h1s->flags & H1S_F_WANT_KAL) && h1s->req.state == H1_MSG_DONE && h1s->res.state == H1_MSG_DONE)) {
2577 TRACE_STATE("keep connection alive (upg_h2c|want_kal)", H1_EV_STRM_SHUT, h1c->conn, h1s);
2578 goto end;
2579 }
Christopher Fauletf2824e62018-10-01 12:12:37 +02002580
Christopher Faulet7f366362019-04-08 10:51:20 +02002581 do_shutw:
Christopher Faulet51dbc942018-09-13 09:05:15 +02002582 h1c->flags |= H1C_F_CS_SHUTW_NOW;
2583 if ((cs->flags & CS_FL_SHW) || b_data(&h1c->obuf))
Christopher Faulet6b81df72019-10-01 22:08:43 +02002584 goto end;
Christopher Faulet666a0c42019-01-08 11:12:04 +01002585 h1_shutw_conn(cs->conn, mode);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002586 end:
2587 TRACE_LEAVE(H1_EV_STRM_SHUT, h1c->conn, h1s);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002588}
2589
Christopher Faulet666a0c42019-01-08 11:12:04 +01002590static void h1_shutw_conn(struct connection *conn, enum cs_shw_mode mode)
Christopher Faulet51dbc942018-09-13 09:05:15 +02002591{
Willy Tarreau3d2ee552018-12-19 14:12:10 +01002592 struct h1c *h1c = conn->ctx;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002593
Christopher Faulet6b81df72019-10-01 22:08:43 +02002594 TRACE_ENTER(H1_EV_STRM_SHUT, conn, h1c->h1s);
Christopher Faulet666a0c42019-01-08 11:12:04 +01002595 conn_xprt_shutw(conn);
2596 conn_sock_shutw(conn, (mode == CS_SHW_NORMAL));
Christopher Faulet7b109f22019-12-05 11:18:31 +01002597 h1c->flags = (h1c->flags & ~H1C_F_CS_SHUTW_NOW) | H1C_F_CS_SHUTDOWN;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002598 TRACE_LEAVE(H1_EV_STRM_SHUT, conn, h1c->h1s);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002599}
2600
Willy Tarreauee1a6fc2020-01-17 07:52:13 +01002601/* Called from the upper layer, to unsubscribe <es> from events <event_type>
2602 * The <es> pointer is not allowed to differ from the one passed to the
2603 * subscribe() call. It always returns zero.
2604 */
2605static int h1_unsubscribe(struct conn_stream *cs, int event_type, struct wait_event *es)
Christopher Faulet51dbc942018-09-13 09:05:15 +02002606{
Christopher Faulet51dbc942018-09-13 09:05:15 +02002607 struct h1s *h1s = cs->ctx;
2608
2609 if (!h1s)
2610 return 0;
2611
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002612 BUG_ON(event_type & ~(SUB_RETRY_SEND|SUB_RETRY_RECV));
Willy Tarreauee1a6fc2020-01-17 07:52:13 +01002613 BUG_ON(h1s->subs && h1s->subs != es);
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002614
Willy Tarreauee1a6fc2020-01-17 07:52:13 +01002615 es->events &= ~event_type;
2616 if (!es->events)
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002617 h1s->subs = NULL;
2618
2619 if (event_type & SUB_RETRY_RECV)
Christopher Faulet6b81df72019-10-01 22:08:43 +02002620 TRACE_DEVEL("unsubscribe(recv)", H1_EV_STRM_RECV, h1s->h1c->conn, h1s);
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002621
2622 if (event_type & SUB_RETRY_SEND)
Christopher Faulet6b81df72019-10-01 22:08:43 +02002623 TRACE_DEVEL("unsubscribe(send)", H1_EV_STRM_SEND, h1s->h1c->conn, h1s);
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002624
Christopher Faulet51dbc942018-09-13 09:05:15 +02002625 return 0;
2626}
2627
Willy Tarreauee1a6fc2020-01-17 07:52:13 +01002628/* Called from the upper layer, to subscribe <es> to events <event_type>. The
2629 * event subscriber <es> is not allowed to change from a previous call as long
2630 * as at least one event is still subscribed. The <event_type> must only be a
2631 * combination of SUB_RETRY_RECV and SUB_RETRY_SEND. It always returns 0, unless
2632 * the conn_stream <cs> was already detached, in which case it will return -1.
2633 */
2634static int h1_subscribe(struct conn_stream *cs, int event_type, struct wait_event *es)
Christopher Faulet51dbc942018-09-13 09:05:15 +02002635{
Christopher Faulet51dbc942018-09-13 09:05:15 +02002636 struct h1s *h1s = cs->ctx;
Christopher Faulet51bb1852019-09-04 10:22:34 +02002637 struct h1c *h1c;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002638
2639 if (!h1s)
2640 return -1;
2641
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002642 BUG_ON(event_type & ~(SUB_RETRY_SEND|SUB_RETRY_RECV));
Willy Tarreauee1a6fc2020-01-17 07:52:13 +01002643 BUG_ON(h1s->subs && h1s->subs != es);
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002644
Willy Tarreauee1a6fc2020-01-17 07:52:13 +01002645 es->events |= event_type;
2646 h1s->subs = es;
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002647
2648 if (event_type & SUB_RETRY_RECV)
Christopher Faulet6b81df72019-10-01 22:08:43 +02002649 TRACE_DEVEL("subscribe(recv)", H1_EV_STRM_RECV, h1s->h1c->conn, h1s);
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002650
2651
Christopher Faulet6b81df72019-10-01 22:08:43 +02002652 if (event_type & SUB_RETRY_SEND) {
2653 TRACE_DEVEL("subscribe(send)", H1_EV_STRM_SEND, h1s->h1c->conn, h1s);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002654 /*
2655 * If the conn_stream attempt to subscribe, and the
2656 * mux isn't subscribed to the connection, then it
2657 * probably means the connection wasn't established
2658 * yet, so we have to subscribe.
2659 */
2660 h1c = h1s->h1c;
2661 if (!(h1c->wait_event.events & SUB_RETRY_SEND))
2662 h1c->conn->xprt->subscribe(h1c->conn,
2663 h1c->conn->xprt_ctx,
2664 SUB_RETRY_SEND,
2665 &h1c->wait_event);
2666 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02002667 return 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002668}
2669
2670/* Called from the upper layer, to receive data */
2671static size_t h1_rcv_buf(struct conn_stream *cs, struct buffer *buf, size_t count, int flags)
2672{
2673 struct h1s *h1s = cs->ctx;
Christopher Faulet539e0292018-11-19 10:40:09 +01002674 struct h1c *h1c = h1s->h1c;
Olivier Houcharddedd3062019-07-26 15:12:38 +02002675 struct h1m *h1m = (!conn_is_back(cs->conn) ? &h1s->req : &h1s->res);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002676 size_t ret = 0;
2677
Christopher Faulet6b81df72019-10-01 22:08:43 +02002678 TRACE_ENTER(H1_EV_STRM_RECV, h1c->conn, h1s,, (size_t[]){count});
Christopher Faulet539e0292018-11-19 10:40:09 +01002679 if (!(h1c->flags & H1C_F_IN_ALLOC))
Christopher Faulet30db3d72019-05-17 15:35:33 +02002680 ret = h1_process_input(h1c, buf, count);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002681 else
2682 TRACE_DEVEL("h1c ibuf not allocated", H1_EV_H1C_RECV|H1_EV_H1C_BLK, h1c->conn);
Christopher Faulet1be55f92018-10-02 15:59:23 +02002683
Christopher Faulete18777b2019-04-16 16:46:36 +02002684 if (flags & CO_RFL_BUF_FLUSH) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002685 if (h1m->state != H1_MSG_TUNNEL || (h1m->state == H1_MSG_DATA && h1m->curr_len)) {
Christopher Faulete18777b2019-04-16 16:46:36 +02002686 h1s->flags |= H1S_F_BUF_FLUSH;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002687 TRACE_STATE("flush stream's buffer", H1_EV_STRM_RECV, h1c->conn, h1s);
2688 }
Christopher Faulete18777b2019-04-16 16:46:36 +02002689 }
Olivier Houchard02bac852019-08-22 18:34:25 +02002690 else {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002691 if (h1s->flags & H1S_F_SPLICED_DATA) {
2692 h1s->flags &= ~H1S_F_SPLICED_DATA;
2693 TRACE_STATE("disable splicing", H1_EV_STRM_RECV, h1c->conn, h1s);
2694 }
2695 if (h1m->state != H1_MSG_DONE && !(h1c->wait_event.events & SUB_RETRY_RECV))
Willy Tarreau2c1f37d2020-03-04 17:50:02 +01002696 h1c->conn->xprt->subscribe(h1c->conn, h1c->conn->xprt_ctx, SUB_RETRY_RECV, &h1c->wait_event);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002697 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02002698 TRACE_LEAVE(H1_EV_STRM_RECV, h1c->conn, h1s,, (size_t[]){ret});
Christopher Faulet51dbc942018-09-13 09:05:15 +02002699 return ret;
2700}
2701
2702
2703/* Called from the upper layer, to send data */
2704static size_t h1_snd_buf(struct conn_stream *cs, struct buffer *buf, size_t count, int flags)
2705{
2706 struct h1s *h1s = cs->ctx;
2707 struct h1c *h1c;
Christopher Faulet5d37dac2018-11-22 10:58:42 +01002708 size_t total = 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002709
2710 if (!h1s)
Christopher Faulet5d37dac2018-11-22 10:58:42 +01002711 return 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002712 h1c = h1s->h1c;
Olivier Houchard305d5ab2019-07-24 18:07:06 +02002713
Christopher Faulet6b81df72019-10-01 22:08:43 +02002714 TRACE_ENTER(H1_EV_STRM_SEND, h1c->conn, h1s,, (size_t[]){count});
2715
Olivier Houchard305d5ab2019-07-24 18:07:06 +02002716 /* If we're not connected yet, or we're waiting for a handshake, stop
2717 * now, as we don't want to remove everything from the channel buffer
2718 * before we're sure we can send it.
2719 */
Willy Tarreau911db9b2020-01-23 16:27:54 +01002720 if (h1c->conn->flags & CO_FL_WAIT_XPRT) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002721 TRACE_LEAVE(H1_EV_STRM_SEND, h1c->conn, h1s);
Christopher Faulet3b88b8d2018-10-26 17:36:03 +02002722 return 0;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002723 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002724
Christopher Faulet46230362019-10-17 16:04:20 +02002725 /* Inherit some flags from the upper layer */
2726 h1c->flags &= ~(H1C_F_CO_MSG_MORE|H1C_F_CO_STREAMER);
2727 if (flags & CO_SFL_MSG_MORE)
2728 h1c->flags |= H1C_F_CO_MSG_MORE;
2729 if (flags & CO_SFL_STREAMER)
2730 h1c->flags |= H1C_F_CO_STREAMER;
2731
Christopher Fauletc31872f2019-06-04 22:09:36 +02002732 while (count) {
Christopher Faulet5d37dac2018-11-22 10:58:42 +01002733 size_t ret = 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002734
Christopher Faulet5d37dac2018-11-22 10:58:42 +01002735 if (!(h1c->flags & (H1C_F_OUT_FULL|H1C_F_OUT_ALLOC)))
2736 ret = h1_process_output(h1c, buf, count);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002737 else
2738 TRACE_DEVEL("h1c obuf not allocated", H1_EV_STRM_SEND|H1_EV_H1S_BLK, h1c->conn, h1s);
Christopher Faulet5d37dac2018-11-22 10:58:42 +01002739 if (!ret)
2740 break;
2741 total += ret;
Christopher Fauletc31872f2019-06-04 22:09:36 +02002742 count -= ret;
Olivier Houchard68787ef2020-01-15 19:13:32 +01002743 if ((h1c->wait_event.events & SUB_RETRY_SEND) || !h1_send(h1c))
Christopher Faulet5d37dac2018-11-22 10:58:42 +01002744 break;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002745 }
Christopher Fauletf96c3222018-11-20 18:38:01 +01002746
Christopher Faulet6b81df72019-10-01 22:08:43 +02002747 TRACE_LEAVE(H1_EV_STRM_SEND, h1c->conn, h1s,, (size_t[]){total});
Christopher Faulet5d37dac2018-11-22 10:58:42 +01002748 return total;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002749}
2750
Willy Tarreaue5733232019-05-22 19:24:06 +02002751#if defined(USE_LINUX_SPLICE)
Christopher Faulet1be55f92018-10-02 15:59:23 +02002752/* Send and get, using splicing */
2753static int h1_rcv_pipe(struct conn_stream *cs, struct pipe *pipe, unsigned int count)
2754{
2755 struct h1s *h1s = cs->ctx;
2756 struct h1m *h1m = (!conn_is_back(cs->conn) ? &h1s->req : &h1s->res);
2757 int ret = 0;
2758
Christopher Faulet6b81df72019-10-01 22:08:43 +02002759 TRACE_ENTER(H1_EV_STRM_RECV, cs->conn, h1s,, (size_t[]){count});
2760
Christopher Faulet9fa40c42019-11-05 16:24:27 +01002761 if ((h1m->flags & H1_MF_CHNK) || (h1m->state != H1_MSG_DATA && h1m->state != H1_MSG_TUNNEL)) {
Christopher Faulete18777b2019-04-16 16:46:36 +02002762 h1s->flags &= ~(H1S_F_BUF_FLUSH|H1S_F_SPLICED_DATA);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002763 TRACE_STATE("disable splicing on !(msg_data|msg_tunnel)", H1_EV_STRM_RECV, cs->conn, h1s);
2764 if (!(h1s->h1c->wait_event.events & SUB_RETRY_RECV)) {
2765 TRACE_STATE("restart receiving data, subscribing", H1_EV_STRM_RECV, cs->conn, h1s);
Christopher Faulet1146f972019-05-29 14:35:24 +02002766 cs->conn->xprt->subscribe(cs->conn, cs->conn->xprt_ctx, SUB_RETRY_RECV, &h1s->h1c->wait_event);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002767 }
Christopher Faulete18777b2019-04-16 16:46:36 +02002768 goto end;
2769 }
2770
Willy Tarreaufbdf90a2019-06-03 13:42:54 +02002771 if (h1s_data_pending(h1s)) {
Christopher Fauletd44ad5b2018-11-19 21:52:12 +01002772 h1s->flags |= H1S_F_BUF_FLUSH;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002773 TRACE_STATE("flush input buffer before splicing", H1_EV_STRM_RECV, cs->conn, h1s);
Christopher Faulet1be55f92018-10-02 15:59:23 +02002774 goto end;
Christopher Fauletd44ad5b2018-11-19 21:52:12 +01002775 }
2776
2777 h1s->flags &= ~H1S_F_BUF_FLUSH;
2778 h1s->flags |= H1S_F_SPLICED_DATA;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002779 TRACE_STATE("enable splicing", H1_EV_STRM_RECV, cs->conn, h1s);
Christopher Faulet1be55f92018-10-02 15:59:23 +02002780 if (h1m->state == H1_MSG_DATA && count > h1m->curr_len)
2781 count = h1m->curr_len;
Olivier Houcharde179d0e2019-03-21 18:27:17 +01002782 ret = cs->conn->xprt->rcv_pipe(cs->conn, cs->conn->xprt_ctx, pipe, count);
Christopher Faulet1146f972019-05-29 14:35:24 +02002783 if (h1m->state == H1_MSG_DATA && ret >= 0) {
Christopher Faulet1be55f92018-10-02 15:59:23 +02002784 h1m->curr_len -= ret;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002785 if (!h1m->curr_len) {
Christopher Faulete18777b2019-04-16 16:46:36 +02002786 h1s->flags &= ~(H1S_F_BUF_FLUSH|H1S_F_SPLICED_DATA);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002787 TRACE_STATE("disable splicing on !curr_len", H1_EV_STRM_RECV, cs->conn, h1s);
2788 }
Christopher Faulete18777b2019-04-16 16:46:36 +02002789 }
2790
Christopher Faulet1be55f92018-10-02 15:59:23 +02002791 end:
Christopher Faulet038ad812019-04-17 11:03:22 +02002792 if (conn_xprt_read0_pending(cs->conn)) {
Willy Tarreauc493c9c2019-06-03 14:18:22 +02002793 h1s->flags |= H1S_F_REOS;
Christopher Fauletf3158e92019-11-15 11:14:23 +01002794 h1s->flags &= ~(H1S_F_BUF_FLUSH|H1S_F_SPLICED_DATA);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002795 TRACE_STATE("read0 on connection", H1_EV_STRM_RECV, cs->conn, h1s);
Christopher Faulet038ad812019-04-17 11:03:22 +02002796 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02002797
Willy Tarreau17ccd1a2020-01-17 16:19:34 +01002798 if (h1m->state != H1_MSG_DATA || !h1m->curr_len)
2799 cs->flags &= ~CS_FL_MAY_SPLICE;
2800
Christopher Faulet6b81df72019-10-01 22:08:43 +02002801 TRACE_LEAVE(H1_EV_STRM_RECV, cs->conn, h1s);
Christopher Faulet1be55f92018-10-02 15:59:23 +02002802 return ret;
Christopher Faulet1be55f92018-10-02 15:59:23 +02002803}
2804
2805static int h1_snd_pipe(struct conn_stream *cs, struct pipe *pipe)
2806{
2807 struct h1s *h1s = cs->ctx;
Christopher Faulet1be55f92018-10-02 15:59:23 +02002808 int ret = 0;
2809
Christopher Faulet6b81df72019-10-01 22:08:43 +02002810 TRACE_ENTER(H1_EV_STRM_SEND, cs->conn, h1s,, (size_t[]){pipe->data});
2811
Christopher Faulet1be55f92018-10-02 15:59:23 +02002812 if (b_data(&h1s->h1c->obuf))
2813 goto end;
2814
Olivier Houcharde179d0e2019-03-21 18:27:17 +01002815 ret = cs->conn->xprt->snd_pipe(cs->conn, cs->conn->xprt_ctx, pipe);
Christopher Faulet1be55f92018-10-02 15:59:23 +02002816 end:
Christopher Fauletd44ad5b2018-11-19 21:52:12 +01002817 if (pipe->data) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002818 if (!(h1s->h1c->wait_event.events & SUB_RETRY_SEND)) {
2819 TRACE_STATE("more data to send, subscribing", H1_EV_STRM_SEND, cs->conn, h1s);
Olivier Houcharde179d0e2019-03-21 18:27:17 +01002820 cs->conn->xprt->subscribe(cs->conn, cs->conn->xprt_ctx, SUB_RETRY_SEND, &h1s->h1c->wait_event);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002821 }
Christopher Fauletd44ad5b2018-11-19 21:52:12 +01002822 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02002823
2824 TRACE_LEAVE(H1_EV_STRM_SEND, cs->conn, h1s);
Christopher Faulet1be55f92018-10-02 15:59:23 +02002825 return ret;
2826}
2827#endif
2828
Olivier Houchard9b8e11e2019-10-25 16:19:26 +02002829static int h1_ctl(struct connection *conn, enum mux_ctl_type mux_ctl, void *output)
2830{
2831 int ret = 0;
2832 switch (mux_ctl) {
2833 case MUX_STATUS:
Willy Tarreau911db9b2020-01-23 16:27:54 +01002834 if (!(conn->flags & CO_FL_WAIT_XPRT))
Olivier Houchard9b8e11e2019-10-25 16:19:26 +02002835 ret |= MUX_STATUS_READY;
2836 return ret;
2837 default:
2838 return -1;
2839 }
2840}
2841
Olivier Houcharda8f6b432018-12-21 15:20:29 +01002842/* for debugging with CLI's "show fd" command */
2843static void h1_show_fd(struct buffer *msg, struct connection *conn)
2844{
2845 struct h1c *h1c = conn->ctx;
2846 struct h1s *h1s = h1c->h1s;
2847
Christopher Fauletf376a312019-01-04 15:16:06 +01002848 chunk_appendf(msg, " h1c.flg=0x%x .sub=%d .ibuf=%u@%p+%u/%u .obuf=%u@%p+%u/%u",
2849 h1c->flags, h1c->wait_event.events,
Olivier Houcharda8f6b432018-12-21 15:20:29 +01002850 (unsigned int)b_data(&h1c->ibuf), b_orig(&h1c->ibuf),
2851 (unsigned int)b_head_ofs(&h1c->ibuf), (unsigned int)b_size(&h1c->ibuf),
2852 (unsigned int)b_data(&h1c->obuf), b_orig(&h1c->obuf),
2853 (unsigned int)b_head_ofs(&h1c->obuf), (unsigned int)b_size(&h1c->obuf));
2854
2855 if (h1s) {
2856 char *method;
2857
2858 if (h1s->meth < HTTP_METH_OTHER)
2859 method = http_known_methods[h1s->meth].ptr;
2860 else
2861 method = "UNKNOWN";
2862 chunk_appendf(msg, " h1s=%p h1s.flg=0x%x .req.state=%s .res.state=%s"
2863 " .meth=%s status=%d",
2864 h1s, h1s->flags,
2865 h1m_state_str(h1s->req.state),
2866 h1m_state_str(h1s->res.state), method, h1s->status);
2867 if (h1s->cs)
2868 chunk_appendf(msg, " .cs.flg=0x%08x .cs.data=%p",
2869 h1s->cs->flags, h1s->cs->data);
2870 }
Christopher Faulet98fbe952019-07-22 16:18:24 +02002871}
2872
2873
2874/* Add an entry in the headers map. Returns -1 on error and 0 on success. */
2875static int add_hdr_case_adjust(const char *from, const char *to, char **err)
2876{
2877 struct h1_hdr_entry *entry;
2878
2879 /* Be sure there is a non-empty <to> */
2880 if (!strlen(to)) {
2881 memprintf(err, "expect <to>");
2882 return -1;
2883 }
2884
2885 /* Be sure only the case differs between <from> and <to> */
2886 if (strcasecmp(from, to)) {
2887 memprintf(err, "<from> and <to> must not differ execpt the case");
2888 return -1;
2889 }
2890
2891 /* Be sure <from> does not already existsin the tree */
2892 if (ebis_lookup(&hdrs_map.map, from)) {
2893 memprintf(err, "duplicate entry '%s'", from);
2894 return -1;
2895 }
2896
2897 /* Create the entry and insert it in the tree */
2898 entry = malloc(sizeof(*entry));
2899 if (!entry) {
2900 memprintf(err, "out of memory");
2901 return -1;
2902 }
2903
2904 entry->node.key = strdup(from);
2905 entry->name.ptr = strdup(to);
2906 entry->name.len = strlen(to);
2907 if (!entry->node.key || !entry->name.ptr) {
2908 free(entry->node.key);
Tim Duesterhused526372020-03-05 17:56:33 +01002909 istfree(&entry->name);
Christopher Faulet98fbe952019-07-22 16:18:24 +02002910 free(entry);
2911 memprintf(err, "out of memory");
2912 return -1;
2913 }
2914 ebis_insert(&hdrs_map.map, &entry->node);
2915 return 0;
2916}
2917
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01002918/* Migrate the the connection to the current thread.
2919 * Return 0 if successful, non-zero otherwise.
2920 * Expected to be called with the old thread lock held.
2921 */
2922static int h1_takeover(struct connection *conn)
2923{
2924 struct h1c *h1c = conn->ctx;
2925
2926 if (fd_takeover(conn->handle.fd, conn) != 0)
2927 return -1;
2928 if (h1c->wait_event.events)
2929 h1c->conn->xprt->unsubscribe(h1c->conn, h1c->conn->xprt_ctx,
2930 h1c->wait_event.events, &h1c->wait_event);
2931 /* To let the tasklet know it should free itself, and do nothing else,
2932 * set its context to NULL.
2933 */
2934 h1c->wait_event.tasklet->context = NULL;
2935 tasklet_wakeup(h1c->wait_event.tasklet);
2936 if (h1c->task) {
2937 h1c->task->context = NULL;
2938 /* Wake the task, to let it free itself */
2939 task_wakeup(h1c->task, TASK_WOKEN_OTHER);
2940
2941 h1c->task = task_new(tid_bit);
2942 if (!h1c->task) {
2943 h1_release(h1c);
2944 return -1;
2945 }
2946 h1c->task->process = h1_timeout_task;
2947 h1c->task->context = h1c;
2948 }
2949 h1c->wait_event.tasklet = tasklet_new();
2950 if (!h1c->wait_event.tasklet) {
2951 h1_release(h1c);
2952 return -1;
2953 }
2954 h1c->wait_event.tasklet->process = h1_io_cb;
2955 h1c->wait_event.tasklet->context = h1c;
2956 h1c->conn->xprt->subscribe(h1c->conn, h1c->conn->xprt_ctx,
2957 SUB_RETRY_RECV, &h1c->wait_event);
2958
2959 return 0;
2960}
2961
2962
Christopher Faulet98fbe952019-07-22 16:18:24 +02002963static void h1_hdeaders_case_adjust_deinit()
2964{
2965 struct ebpt_node *node, *next;
2966 struct h1_hdr_entry *entry;
2967
2968 node = ebpt_first(&hdrs_map.map);
2969 while (node) {
2970 next = ebpt_next(node);
2971 ebpt_delete(node);
2972 entry = container_of(node, struct h1_hdr_entry, node);
2973 free(entry->node.key);
Tim Duesterhused526372020-03-05 17:56:33 +01002974 istfree(&entry->name);
Christopher Faulet98fbe952019-07-22 16:18:24 +02002975 free(entry);
2976 node = next;
2977 }
2978 free(hdrs_map.name);
Olivier Houcharda8f6b432018-12-21 15:20:29 +01002979}
2980
Christopher Faulet98fbe952019-07-22 16:18:24 +02002981static int cfg_h1_headers_case_adjust_postparser()
2982{
2983 FILE *file = NULL;
2984 char *c, *key_beg, *key_end, *value_beg, *value_end;
2985 char *err;
2986 int rc, line = 0, err_code = 0;
2987
2988 if (!hdrs_map.name)
2989 goto end;
2990
2991 file = fopen(hdrs_map.name, "r");
2992 if (!file) {
2993 ha_alert("config : h1-outgoing-headers-case-adjust-file '%s': failed to open file.\n",
2994 hdrs_map.name);
2995 err_code |= ERR_ALERT | ERR_FATAL;
2996 goto end;
2997 }
2998
2999 /* now parse all lines. The file may contain only two header name per
3000 * line, separated by spaces. All heading and trailing spaces will be
3001 * ignored. Lines starting with a # are ignored.
3002 */
3003 while (fgets(trash.area, trash.size, file) != NULL) {
3004 line++;
3005 c = trash.area;
3006
3007 /* strip leading spaces and tabs */
3008 while (*c == ' ' || *c == '\t')
3009 c++;
3010
3011 /* ignore emptu lines, or lines beginning with a dash */
3012 if (*c == '#' || *c == '\0' || *c == '\r' || *c == '\n')
3013 continue;
3014
3015 /* look for the end of the key */
3016 key_beg = c;
3017 while (*c != '\0' && *c != ' ' && *c != '\t' && *c != '\n' && *c != '\r')
3018 c++;
3019 key_end = c;
3020
3021 /* strip middle spaces and tabs */
3022 while (*c == ' ' || *c == '\t')
3023 c++;
3024
3025 /* look for the end of the value, it is the end of the line */
3026 value_beg = c;
3027 while (*c && *c != '\n' && *c != '\r')
3028 c++;
3029 value_end = c;
3030
3031 /* trim possibly trailing spaces and tabs */
3032 while (value_end > value_beg && (value_end[-1] == ' ' || value_end[-1] == '\t'))
3033 value_end--;
3034
3035 /* set final \0 and check entries */
3036 *key_end = '\0';
3037 *value_end = '\0';
3038
3039 err = NULL;
3040 rc = add_hdr_case_adjust(key_beg, value_beg, &err);
3041 if (rc < 0) {
Christopher Faulet98fbe952019-07-22 16:18:24 +02003042 ha_alert("config : h1-outgoing-headers-case-adjust-file '%s' : %s at line %d.\n",
3043 hdrs_map.name, err, line);
3044 err_code |= ERR_ALERT | ERR_FATAL;
Christopher Fauletcac5c092019-07-30 16:51:42 +02003045 free(err);
Christopher Faulet98fbe952019-07-22 16:18:24 +02003046 goto end;
3047 }
3048 if (rc > 0) {
Christopher Faulet98fbe952019-07-22 16:18:24 +02003049 ha_warning("config : h1-outgoing-headers-case-adjust-file '%s' : %s at line %d.\n",
3050 hdrs_map.name, err, line);
3051 err_code |= ERR_WARN;
Christopher Fauletcac5c092019-07-30 16:51:42 +02003052 free(err);
Christopher Faulet98fbe952019-07-22 16:18:24 +02003053 }
3054 }
3055
3056 end:
3057 if (file)
3058 fclose(file);
3059 hap_register_post_deinit(h1_hdeaders_case_adjust_deinit);
3060 return err_code;
3061}
3062
3063
3064/* config parser for global "h1-outgoing-header-case-adjust" */
3065static int cfg_parse_h1_header_case_adjust(char **args, int section_type, struct proxy *curpx,
3066 struct proxy *defpx, const char *file, int line,
3067 char **err)
3068{
3069 if (too_many_args(2, args, err, NULL))
3070 return -1;
3071 if (!*(args[1]) || !*(args[2])) {
3072 memprintf(err, "'%s' expects <from> and <to> as argument.", args[0]);
3073 return -1;
3074 }
3075 return add_hdr_case_adjust(args[1], args[2], err);
3076}
3077
3078/* config parser for global "h1-outgoing-headers-case-adjust-file" */
3079static int cfg_parse_h1_headers_case_adjust_file(char **args, int section_type, struct proxy *curpx,
3080 struct proxy *defpx, const char *file, int line,
3081 char **err)
3082{
3083 if (too_many_args(1, args, err, NULL))
3084 return -1;
3085 if (!*(args[1])) {
3086 memprintf(err, "'%s' expects <file> as argument.", args[0]);
3087 return -1;
3088 }
3089 free(hdrs_map.name);
3090 hdrs_map.name = strdup(args[1]);
3091 return 0;
3092}
3093
3094
3095/* config keyword parsers */
3096static struct cfg_kw_list cfg_kws = {{ }, {
3097 { CFG_GLOBAL, "h1-case-adjust", cfg_parse_h1_header_case_adjust },
3098 { CFG_GLOBAL, "h1-case-adjust-file", cfg_parse_h1_headers_case_adjust_file },
3099 { 0, NULL, NULL },
3100 }
3101};
3102
3103INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws);
3104REGISTER_CONFIG_POSTPARSER("h1-headers-map", cfg_h1_headers_case_adjust_postparser);
3105
3106
Christopher Faulet51dbc942018-09-13 09:05:15 +02003107/****************************************/
Ilya Shipitsinc02a23f2020-05-06 00:53:22 +05003108/* MUX initialization and instantiation */
Christopher Faulet51dbc942018-09-13 09:05:15 +02003109/****************************************/
3110
3111/* The mux operations */
Willy Tarreauf77a1582019-01-10 10:00:08 +01003112static const struct mux_ops mux_h1_ops = {
Christopher Faulet51dbc942018-09-13 09:05:15 +02003113 .init = h1_init,
3114 .wake = h1_wake,
3115 .attach = h1_attach,
3116 .get_first_cs = h1_get_first_cs,
Christopher Fauletfeb11742018-11-29 15:12:34 +01003117 .get_cs_info = h1_get_cs_info,
Christopher Faulet51dbc942018-09-13 09:05:15 +02003118 .detach = h1_detach,
3119 .destroy = h1_destroy,
3120 .avail_streams = h1_avail_streams,
Willy Tarreau00f18a32019-01-26 12:19:01 +01003121 .used_streams = h1_used_streams,
Christopher Faulet51dbc942018-09-13 09:05:15 +02003122 .rcv_buf = h1_rcv_buf,
3123 .snd_buf = h1_snd_buf,
Willy Tarreaue5733232019-05-22 19:24:06 +02003124#if defined(USE_LINUX_SPLICE)
Christopher Faulet1be55f92018-10-02 15:59:23 +02003125 .rcv_pipe = h1_rcv_pipe,
3126 .snd_pipe = h1_snd_pipe,
3127#endif
Christopher Faulet51dbc942018-09-13 09:05:15 +02003128 .subscribe = h1_subscribe,
3129 .unsubscribe = h1_unsubscribe,
3130 .shutr = h1_shutr,
3131 .shutw = h1_shutw,
Olivier Houcharda8f6b432018-12-21 15:20:29 +01003132 .show_fd = h1_show_fd,
Olivier Houchard9a86fcb2018-12-11 16:47:14 +01003133 .reset = h1_reset,
Olivier Houchard9b8e11e2019-10-25 16:19:26 +02003134 .ctl = h1_ctl,
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01003135 .takeover = h1_takeover,
Christopher Faulet9f38f5a2019-04-03 09:53:32 +02003136 .flags = MX_FL_HTX,
Willy Tarreau0a7a4fb2019-05-22 11:36:54 +02003137 .name = "H1",
Christopher Faulet51dbc942018-09-13 09:05:15 +02003138};
3139
3140
3141/* this mux registers default HTX proto */
3142static struct mux_proto_list mux_proto_htx =
Christopher Fauletc985f6c2019-07-15 11:42:52 +02003143{ .token = IST(""), .mode = PROTO_MODE_HTTP, .side = PROTO_SIDE_BOTH, .mux = &mux_h1_ops };
Christopher Faulet51dbc942018-09-13 09:05:15 +02003144
Willy Tarreau0108d902018-11-25 19:14:37 +01003145INITCALL1(STG_REGISTER, register_mux_proto, &mux_proto_htx);
3146
Christopher Faulet51dbc942018-09-13 09:05:15 +02003147/*
3148 * Local variables:
3149 * c-indent-level: 8
3150 * c-basic-offset: 8
3151 * End:
3152 */