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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 Tarreaub2551052020-06-09 09:07:15 +020012#include <import/ebistree.h>
13
Willy Tarreau4c7e4b72020-05-27 12:58:42 +020014#include <haproxy/api.h>
Willy Tarreau6be78492020-06-05 00:00:29 +020015#include <haproxy/cfgparse.h>
Willy Tarreau7ea393d2020-06-04 18:02:10 +020016#include <haproxy/connection.h>
Willy Tarreau5413a872020-06-02 19:33:08 +020017#include <haproxy/h1.h>
Willy Tarreauc6fe8842020-06-04 09:00:02 +020018#include <haproxy/h1_htx.h>
Willy Tarreaubf073142020-06-03 12:04:01 +020019#include <haproxy/h2.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020020#include <haproxy/http_htx.h>
Willy Tarreau16f958c2020-06-03 08:44:35 +020021#include <haproxy/htx.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020022#include <haproxy/istbuf.h>
23#include <haproxy/log.h>
Willy Tarreau551271d2020-06-04 08:32:23 +020024#include <haproxy/pipe-t.h>
Willy Tarreaua264d962020-06-04 22:29:18 +020025#include <haproxy/proxy-t.h>
Willy Tarreau48d25b32020-06-04 18:58:52 +020026#include <haproxy/session-t.h>
Willy Tarreaudfd3de82020-06-04 23:46:14 +020027#include <haproxy/stream.h>
Willy Tarreau5e539c92020-06-04 20:45:39 +020028#include <haproxy/stream_interface.h>
Willy Tarreauc6d61d72020-06-04 19:02:42 +020029#include <haproxy/trace.h>
Christopher Faulet51dbc942018-09-13 09:05:15 +020030
31/*
32 * H1 Connection flags (32 bits)
33 */
34#define H1C_F_NONE 0x00000000
35
36/* Flags indicating why writing output data are blocked */
37#define H1C_F_OUT_ALLOC 0x00000001 /* mux is blocked on lack of output buffer */
38#define H1C_F_OUT_FULL 0x00000002 /* mux is blocked on output buffer full */
39/* 0x00000004 - 0x00000008 unused */
40
41/* Flags indicating why reading input data are blocked. */
42#define H1C_F_IN_ALLOC 0x00000010 /* mux is blocked on lack of input buffer */
43#define H1C_F_IN_FULL 0x00000020 /* mux is blocked on input buffer full */
Christopher Fauletd17ad822020-09-24 15:14:29 +020044#define H1C_F_IN_SALLOC 0x00000040 /* mux is blocked on lack of stream's request buffer */
Christopher Faulet3ced1d12020-11-27 16:44:01 +010045/* 0x00000080 unused */
Christopher Faulet51dbc942018-09-13 09:05:15 +020046
Christopher Faulet7b109f22019-12-05 11:18:31 +010047/* Flags indicating the connection state */
Christopher Faulet3ced1d12020-11-27 16:44:01 +010048#define H1C_F_ST_EMBRYONIC 0x00000100 /* Set when a H1 stream with no conn-stream is attached to the connection */
49#define H1C_F_ST_ATTACHED 0x00000200 /* Set when a H1 stream with a conn-stream is attached to the connection */
50#define H1C_F_ST_IDLE 0x00000400 /* connection is idle and may be reused
51 * (exclusive to all H1C_F_ST flags and never set when an h1s is attached) */
52#define H1C_F_ST_ERROR 0x00000800 /* connection must be closed ASAP because an error occurred (conn-stream may still be attached) */
53#define H1C_F_ST_SHUTDOWN 0x00001000 /* connection must be shut down ASAP flushing output first (conn-stream may still be attached) */
54#define H1C_F_ST_ALIVE (H1C_F_ST_IDLE|H1C_F_ST_EMBRYONIC|H1C_F_ST_ATTACHED)
55/* 0x00002000 - 0x00008000 unused */
Christopher Faulet51dbc942018-09-13 09:05:15 +020056
Christopher Faulet3ced1d12020-11-27 16:44:01 +010057#define H1C_F_WAIT_OPPOSITE 0x00010000 /* Don't read more data for now, waiting sync with opposite side */
58#define H1C_F_WANT_SPLICE 0x00020000 /* Don't read into a bufffer because we want to use or we are using splicing */
59#define H1C_F_ERR_PENDING 0x00040000 /* Send an error and close the connection ASAP (implies H1C_F_ST_ERROR) */
60#define H1C_F_WAIT_NEXT_REQ 0x00080000 /* waiting for the next request to start, use keep-alive timeout */
61#define H1C_F_UPG_H2C 0x00100000 /* set if an upgrade to h2 should be done */
62#define H1C_F_CO_MSG_MORE 0x00200000 /* set if CO_SFL_MSG_MORE must be set when calling xprt->snd_buf() */
63#define H1C_F_CO_STREAMER 0x00400000 /* set if CO_SFL_STREAMER must be set when calling xprt->snd_buf() */
64/* 0x00800000 - 0x40000000 unsued*/
Christopher Faulet129817b2018-09-20 16:14:40 +020065
Christopher Faulet3ced1d12020-11-27 16:44:01 +010066#define H1C_F_IS_BACK 0x80000000 /* Set on outgoing connection */
Christopher Faulet46230362019-10-17 16:04:20 +020067
Christopher Faulet51dbc942018-09-13 09:05:15 +020068/*
69 * H1 Stream flags (32 bits)
70 */
Christopher Faulet129817b2018-09-20 16:14:40 +020071#define H1S_F_NONE 0x00000000
Christopher Faulet60ef12c2020-09-24 10:05:44 +020072/* 0x00000001..0x00000004 unsued */
Willy Tarreauc493c9c2019-06-03 14:18:22 +020073#define H1S_F_REOS 0x00000008 /* End of input stream seen even if not delivered yet */
Christopher Fauletf2824e62018-10-01 12:12:37 +020074#define H1S_F_WANT_KAL 0x00000010
75#define H1S_F_WANT_TUN 0x00000020
76#define H1S_F_WANT_CLO 0x00000040
77#define H1S_F_WANT_MSK 0x00000070
78#define H1S_F_NOT_FIRST 0x00000080 /* The H1 stream is not the first one */
Christopher Faulet60ef12c2020-09-24 10:05:44 +020079
Christopher Faulet76014fd2019-12-10 11:47:22 +010080#define H1S_F_PARSING_DONE 0x00000400 /* Set when incoming message parsing is finished (EOM added) */
Christopher Faulet60ef12c2020-09-24 10:05:44 +020081#define H1S_F_PARSING_ERROR 0x00000800 /* Set when an error occurred during the message parsing */
82#define H1S_F_PROCESSING_ERROR 0x00001000 /* Set when an error occurred during the message xfer */
83#define H1S_F_ERROR 0x00001800 /* stream error mask */
84
Christopher Faulet72ba6cd2019-09-24 16:20:05 +020085#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 +020086#define H1S_F_HAVE_O_CONN 0x00004000 /* Set during output process to know connection mode was processed */
Christopher Faulet51dbc942018-09-13 09:05:15 +020087
88/* H1 connection descriptor */
Christopher Faulet51dbc942018-09-13 09:05:15 +020089struct h1c {
90 struct connection *conn;
91 struct proxy *px;
92 uint32_t flags; /* Connection flags: H1C_F_* */
Christopher Fauletc18fc232020-10-06 17:41:36 +020093 unsigned int errcode; /* Status code when an error occurred at the H1 connection level */
Christopher Faulet51dbc942018-09-13 09:05:15 +020094 struct buffer ibuf; /* Input buffer to store data before parsing */
95 struct buffer obuf; /* Output buffer to store data after reformatting */
96
97 struct buffer_wait buf_wait; /* Wait list for buffer allocation */
98 struct wait_event wait_event; /* To be used if we're waiting for I/Os */
99
100 struct h1s *h1s; /* H1 stream descriptor */
Christopher Fauletb8093cf2019-01-03 16:27:28 +0100101 struct task *task; /* timeout management task */
Christopher Fauletdbe57792020-10-05 17:50:58 +0200102 int idle_exp; /* idle expiration date (http-keep-alive or http-request timeout) */
103 int timeout; /* client/server timeout duration */
104 int shut_timeout; /* client-fin/server-fin timeout duration */
Christopher Faulet51dbc942018-09-13 09:05:15 +0200105};
106
107/* H1 stream descriptor */
108struct h1s {
109 struct h1c *h1c;
110 struct conn_stream *cs;
Christopher Fauletfeb11742018-11-29 15:12:34 +0100111 uint32_t flags; /* Connection flags: H1S_F_* */
Christopher Faulet51dbc942018-09-13 09:05:15 +0200112
Willy Tarreau1b0d4d12020-01-16 11:03:19 +0100113 struct wait_event *subs; /* Address of the wait_event the conn_stream associated is waiting on */
Christopher Faulet129817b2018-09-20 16:14:40 +0200114
Olivier Houchardf502aca2018-12-14 19:42:40 +0100115 struct session *sess; /* Associated session */
Christopher Fauletd17ad822020-09-24 15:14:29 +0200116 struct buffer rxbuf; /* receive buffer, always valid (buf_empty or real buffer) */
Christopher Faulet129817b2018-09-20 16:14:40 +0200117 struct h1m req;
118 struct h1m res;
119
Ilya Shipitsin47d17182020-06-21 21:42:57 +0500120 enum http_meth_t meth; /* HTTP request method */
Christopher Faulet129817b2018-09-20 16:14:40 +0200121 uint16_t status; /* HTTP response status */
Christopher Faulet51dbc942018-09-13 09:05:15 +0200122};
123
Christopher Faulet98fbe952019-07-22 16:18:24 +0200124/* Map of headers used to convert outgoing headers */
125struct h1_hdrs_map {
126 char *name;
127 struct eb_root map;
128};
129
130/* An entry in a headers map */
131struct h1_hdr_entry {
132 struct ist name;
133 struct ebpt_node node;
134};
135
136/* Declare the headers map */
137static struct h1_hdrs_map hdrs_map = { .name = NULL, .map = EB_ROOT };
138
139
Christopher Faulet6b81df72019-10-01 22:08:43 +0200140/* trace source and events */
141static void h1_trace(enum trace_level level, uint64_t mask,
142 const struct trace_source *src,
143 const struct ist where, const struct ist func,
144 const void *a1, const void *a2, const void *a3, const void *a4);
145
146/* The event representation is split like this :
147 * h1c - internal H1 connection
148 * h1s - internal H1 stream
149 * strm - application layer
150 * rx - data receipt
151 * tx - data transmission
152 *
153 */
154static const struct trace_event h1_trace_events[] = {
155#define H1_EV_H1C_NEW (1ULL << 0)
156 { .mask = H1_EV_H1C_NEW, .name = "h1c_new", .desc = "new H1 connection" },
157#define H1_EV_H1C_RECV (1ULL << 1)
158 { .mask = H1_EV_H1C_RECV, .name = "h1c_recv", .desc = "Rx on H1 connection" },
159#define H1_EV_H1C_SEND (1ULL << 2)
160 { .mask = H1_EV_H1C_SEND, .name = "h1c_send", .desc = "Tx on H1 connection" },
161#define H1_EV_H1C_BLK (1ULL << 3)
162 { .mask = H1_EV_H1C_BLK, .name = "h1c_blk", .desc = "H1 connection blocked" },
163#define H1_EV_H1C_WAKE (1ULL << 4)
164 { .mask = H1_EV_H1C_WAKE, .name = "h1c_wake", .desc = "H1 connection woken up" },
165#define H1_EV_H1C_END (1ULL << 5)
166 { .mask = H1_EV_H1C_END, .name = "h1c_end", .desc = "H1 connection terminated" },
167#define H1_EV_H1C_ERR (1ULL << 6)
168 { .mask = H1_EV_H1C_ERR, .name = "h1c_err", .desc = "error on H1 connection" },
169
170#define H1_EV_RX_DATA (1ULL << 7)
171 { .mask = H1_EV_RX_DATA, .name = "rx_data", .desc = "receipt of any H1 data" },
172#define H1_EV_RX_EOI (1ULL << 8)
173 { .mask = H1_EV_RX_EOI, .name = "rx_eoi", .desc = "receipt of end of H1 input" },
174#define H1_EV_RX_HDRS (1ULL << 9)
175 { .mask = H1_EV_RX_HDRS, .name = "rx_headers", .desc = "receipt of H1 headers" },
176#define H1_EV_RX_BODY (1ULL << 10)
177 { .mask = H1_EV_RX_BODY, .name = "rx_body", .desc = "receipt of H1 body" },
178#define H1_EV_RX_TLRS (1ULL << 11)
179 { .mask = H1_EV_RX_TLRS, .name = "rx_trailerus", .desc = "receipt of H1 trailers" },
180
181#define H1_EV_TX_DATA (1ULL << 12)
182 { .mask = H1_EV_TX_DATA, .name = "tx_data", .desc = "transmission of any H1 data" },
183#define H1_EV_TX_EOI (1ULL << 13)
184 { .mask = H1_EV_TX_EOI, .name = "tx_eoi", .desc = "transmission of end of H1 input" },
185#define H1_EV_TX_HDRS (1ULL << 14)
186 { .mask = H1_EV_TX_HDRS, .name = "tx_headers", .desc = "transmission of all headers" },
187#define H1_EV_TX_BODY (1ULL << 15)
188 { .mask = H1_EV_TX_BODY, .name = "tx_body", .desc = "transmission of H1 body" },
189#define H1_EV_TX_TLRS (1ULL << 16)
190 { .mask = H1_EV_TX_TLRS, .name = "tx_trailerus", .desc = "transmission of H1 trailers" },
191
192#define H1_EV_H1S_NEW (1ULL << 17)
193 { .mask = H1_EV_H1S_NEW, .name = "h1s_new", .desc = "new H1 stream" },
194#define H1_EV_H1S_BLK (1ULL << 18)
195 { .mask = H1_EV_H1S_BLK, .name = "h1s_blk", .desc = "H1 stream blocked" },
196#define H1_EV_H1S_END (1ULL << 19)
197 { .mask = H1_EV_H1S_END, .name = "h1s_end", .desc = "H1 stream terminated" },
198#define H1_EV_H1S_ERR (1ULL << 20)
199 { .mask = H1_EV_H1S_ERR, .name = "h1s_err", .desc = "error on H1 stream" },
200
201#define H1_EV_STRM_NEW (1ULL << 21)
202 { .mask = H1_EV_STRM_NEW, .name = "strm_new", .desc = "app-layer stream creation" },
203#define H1_EV_STRM_RECV (1ULL << 22)
204 { .mask = H1_EV_STRM_RECV, .name = "strm_recv", .desc = "receiving data for stream" },
205#define H1_EV_STRM_SEND (1ULL << 23)
206 { .mask = H1_EV_STRM_SEND, .name = "strm_send", .desc = "sending data for stream" },
207#define H1_EV_STRM_WAKE (1ULL << 24)
208 { .mask = H1_EV_STRM_WAKE, .name = "strm_wake", .desc = "stream woken up" },
209#define H1_EV_STRM_SHUT (1ULL << 25)
210 { .mask = H1_EV_STRM_SHUT, .name = "strm_shut", .desc = "stream shutdown" },
211#define H1_EV_STRM_END (1ULL << 26)
212 { .mask = H1_EV_STRM_END, .name = "strm_end", .desc = "detaching app-layer stream" },
213#define H1_EV_STRM_ERR (1ULL << 27)
214 { .mask = H1_EV_STRM_ERR, .name = "strm_err", .desc = "stream error" },
215
216 { }
217};
218
219static const struct name_desc h1_trace_lockon_args[4] = {
220 /* arg1 */ { /* already used by the connection */ },
221 /* arg2 */ { .name="h1s", .desc="H1 stream" },
222 /* arg3 */ { },
223 /* arg4 */ { }
224};
225
226static const struct name_desc h1_trace_decoding[] = {
227#define H1_VERB_CLEAN 1
228 { .name="clean", .desc="only user-friendly stuff, generally suitable for level \"user\"" },
229#define H1_VERB_MINIMAL 2
230 { .name="minimal", .desc="report only h1c/h1s state and flags, no real decoding" },
231#define H1_VERB_SIMPLE 3
232 { .name="simple", .desc="add request/response status line or htx info when available" },
233#define H1_VERB_ADVANCED 4
234 { .name="advanced", .desc="add header fields or frame decoding when available" },
235#define H1_VERB_COMPLETE 5
236 { .name="complete", .desc="add full data dump when available" },
237 { /* end */ }
238};
239
240static struct trace_source trace_h1 = {
241 .name = IST("h1"),
242 .desc = "HTTP/1 multiplexer",
243 .arg_def = TRC_ARG1_CONN, // TRACE()'s first argument is always a connection
244 .default_cb = h1_trace,
245 .known_events = h1_trace_events,
246 .lockon_args = h1_trace_lockon_args,
247 .decoding = h1_trace_decoding,
248 .report_events = ~0, // report everything by default
249};
250
251#define TRACE_SOURCE &trace_h1
252INITCALL1(STG_REGISTER, trace_register_source, TRACE_SOURCE);
253
Christopher Faulet51dbc942018-09-13 09:05:15 +0200254/* the h1c and h1s pools */
Willy Tarreau8ceae722018-11-26 11:58:30 +0100255DECLARE_STATIC_POOL(pool_head_h1c, "h1c", sizeof(struct h1c));
256DECLARE_STATIC_POOL(pool_head_h1s, "h1s", sizeof(struct h1s));
Christopher Faulet51dbc942018-09-13 09:05:15 +0200257
Christopher Faulet51dbc942018-09-13 09:05:15 +0200258static int h1_recv(struct h1c *h1c);
259static int h1_send(struct h1c *h1c);
260static int h1_process(struct h1c *h1c);
261static struct task *h1_io_cb(struct task *t, void *ctx, unsigned short state);
Christopher Fauletb8093cf2019-01-03 16:27:28 +0100262static struct task *h1_timeout_task(struct task *t, void *context, unsigned short state);
Christopher Faulet3c82d8b2020-10-05 17:11:16 +0200263static void h1_shutw_conn(struct connection *conn, enum cs_shw_mode mode);
Christopher Faulet660f6f32019-10-04 10:22:47 +0200264static void h1_wake_stream_for_recv(struct h1s *h1s);
265static void h1_wake_stream_for_send(struct h1s *h1s);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200266
Christopher Faulet6b81df72019-10-01 22:08:43 +0200267/* the H1 traces always expect that arg1, if non-null, is of type connection
268 * (from which we can derive h1c), that arg2, if non-null, is of type h1s, and
269 * that arg3, if non-null, is a htx for rx/tx headers.
270 */
271static void h1_trace(enum trace_level level, uint64_t mask, const struct trace_source *src,
272 const struct ist where, const struct ist func,
273 const void *a1, const void *a2, const void *a3, const void *a4)
274{
275 const struct connection *conn = a1;
276 const struct h1c *h1c = conn ? conn->ctx : NULL;
277 const struct h1s *h1s = a2;
278 const struct htx *htx = a3;
279 const size_t *val = a4;
280
281 if (!h1c)
282 h1c = (h1s ? h1s->h1c : NULL);
283
284 if (!h1c || src->verbosity < H1_VERB_CLEAN)
285 return;
286
287 /* Display frontend/backend info by default */
Christopher Faulet0a799aa2020-09-24 09:52:52 +0200288 chunk_appendf(&trace_buf, " : [%c]", ((h1c->flags & H1C_F_IS_BACK) ? 'B' : 'F'));
Christopher Faulet6b81df72019-10-01 22:08:43 +0200289
290 /* Display request and response states if h1s is defined */
291 if (h1s)
292 chunk_appendf(&trace_buf, " [%s, %s]",
293 h1m_state_str(h1s->req.state), h1m_state_str(h1s->res.state));
294
295 if (src->verbosity == H1_VERB_CLEAN)
296 return;
297
298 /* Display the value to the 4th argument (level > STATE) */
299 if (src->level > TRACE_LEVEL_STATE && val)
Willy Tarreaue18f53e2019-11-27 15:41:31 +0100300 chunk_appendf(&trace_buf, " - VAL=%lu", (long)*val);
Christopher Faulet6b81df72019-10-01 22:08:43 +0200301
302 /* Display status-line if possible (verbosity > MINIMAL) */
303 if (src->verbosity > H1_VERB_MINIMAL && htx && htx_nbblks(htx)) {
304 const struct htx_blk *blk = htx_get_head_blk(htx);
305 const struct htx_sl *sl = htx_get_blk_ptr(htx, blk);
306 enum htx_blk_type type = htx_get_blk_type(blk);
307
308 if (type == HTX_BLK_REQ_SL || type == HTX_BLK_RES_SL)
309 chunk_appendf(&trace_buf, " - \"%.*s %.*s %.*s\"",
310 HTX_SL_P1_LEN(sl), HTX_SL_P1_PTR(sl),
311 HTX_SL_P2_LEN(sl), HTX_SL_P2_PTR(sl),
312 HTX_SL_P3_LEN(sl), HTX_SL_P3_PTR(sl));
313 }
314
315 /* Display h1c info and, if defined, h1s info (pointer + flags) */
316 chunk_appendf(&trace_buf, " - h1c=%p(0x%08x)", h1c, h1c->flags);
317 if (h1s)
318 chunk_appendf(&trace_buf, " h1s=%p(0x%08x)", h1s, h1s->flags);
319
320 if (src->verbosity == H1_VERB_MINIMAL)
321 return;
322
323 /* Display input and output buffer info (level > USER & verbosity > SIMPLE) */
324 if (src->level > TRACE_LEVEL_USER) {
325 if (src->verbosity == H1_VERB_COMPLETE ||
326 (src->verbosity == H1_VERB_ADVANCED && (mask & (H1_EV_H1C_RECV|H1_EV_STRM_RECV))))
327 chunk_appendf(&trace_buf, " ibuf=%u@%p+%u/%u",
328 (unsigned int)b_data(&h1c->ibuf), b_orig(&h1c->ibuf),
329 (unsigned int)b_head_ofs(&h1c->ibuf), (unsigned int)b_size(&h1c->ibuf));
330 if (src->verbosity == H1_VERB_COMPLETE ||
331 (src->verbosity == H1_VERB_ADVANCED && (mask & (H1_EV_H1C_SEND|H1_EV_STRM_SEND))))
332 chunk_appendf(&trace_buf, " obuf=%u@%p+%u/%u",
333 (unsigned int)b_data(&h1c->obuf), b_orig(&h1c->obuf),
334 (unsigned int)b_head_ofs(&h1c->obuf), (unsigned int)b_size(&h1c->obuf));
335 }
336
337 /* Display htx info if defined (level > USER) */
338 if (src->level > TRACE_LEVEL_USER && htx) {
339 int full = 0;
340
341 /* Full htx info (level > STATE && verbosity > SIMPLE) */
342 if (src->level > TRACE_LEVEL_STATE) {
343 if (src->verbosity == H1_VERB_COMPLETE)
344 full = 1;
345 else if (src->verbosity == H1_VERB_ADVANCED && (mask & (H1_EV_RX_HDRS|H1_EV_TX_HDRS)))
346 full = 1;
347 }
348
349 chunk_memcat(&trace_buf, "\n\t", 2);
350 htx_dump(&trace_buf, htx, full);
351 }
352}
353
354
Christopher Faulet51dbc942018-09-13 09:05:15 +0200355/*****************************************************/
356/* functions below are for dynamic buffer management */
357/*****************************************************/
358/*
Christopher Faulet2545a0b2019-12-05 12:30:55 +0100359 * Indicates whether or not we may receive data. The rules are the following :
360 * - if an error or a shutdown for reads was detected on the connection we
Christopher Faulet119ac872020-09-30 17:33:22 +0200361 * must not attempt to receive
362 * - if we are waiting for the connection establishment, we must not attempt
363 * to receive
364 * - if an error was detected on the stream we must not attempt to receive
365 * - if reads are explicitly disabled, we must not attempt to receive
Christopher Faulet2545a0b2019-12-05 12:30:55 +0100366 * - if the input buffer failed to be allocated or is full , we must not try
367 * to receive
Christopher Faulet119ac872020-09-30 17:33:22 +0200368 * - if the mux is not blocked on an input condition, we may attempt to receive
Christopher Faulet51dbc942018-09-13 09:05:15 +0200369 * - otherwise must may not attempt to receive
370 */
371static inline int h1_recv_allowed(const struct h1c *h1c)
372{
Christopher Faulet3ced1d12020-11-27 16:44:01 +0100373 if (h1c->flags & H1C_F_ST_ERROR) {
Christopher Faulet2545a0b2019-12-05 12:30:55 +0100374 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 +0200375 return 0;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200376 }
Christopher Faulet51dbc942018-09-13 09:05:15 +0200377
Willy Tarreau2febb842020-07-31 09:15:43 +0200378 if (h1c->conn->flags & (CO_FL_ERROR|CO_FL_SOCK_RD_SH|CO_FL_WAIT_L4_CONN|CO_FL_WAIT_L6_CONN)) {
379 TRACE_DEVEL("recv not allowed because of (error|read0|waitl4|waitl6) on connection", H1_EV_H1C_RECV|H1_EV_H1C_BLK, h1c->conn);
Christopher Fauletcf56b992018-12-11 16:12:31 +0100380 return 0;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200381 }
Christopher Fauletcf56b992018-12-11 16:12:31 +0100382
Christopher Faulet119ac872020-09-30 17:33:22 +0200383 if (h1c->h1s && (h1c->h1s->flags & H1S_F_ERROR)) {
384 TRACE_DEVEL("recv not allowed because of error on h1s", H1_EV_H1C_RECV|H1_EV_H1C_BLK, h1c->conn);
385 return 0;
386 }
387
Christopher Faulet089acd52020-09-21 10:57:52 +0200388 if (h1c->flags & H1C_F_WAIT_OPPOSITE) {
389 TRACE_DEVEL("recv not allowed (wait_opposite)", H1_EV_H1C_RECV|H1_EV_H1C_BLK, h1c->conn);
Willy Tarreauf5ea3a82020-07-31 09:16:23 +0200390 return 0;
391 }
392
Christopher Fauletd17ad822020-09-24 15:14:29 +0200393 if (!(h1c->flags & (H1C_F_IN_ALLOC|H1C_F_IN_FULL|H1C_F_IN_SALLOC)))
Christopher Faulet51dbc942018-09-13 09:05:15 +0200394 return 1;
395
Christopher Faulet6b81df72019-10-01 22:08:43 +0200396 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 +0200397 return 0;
398}
399
400/*
401 * Tries to grab a buffer and to re-enables processing on mux <target>. The h1
402 * flags are used to figure what buffer was requested. It returns 1 if the
403 * allocation succeeds, in which case the connection is woken up, or 0 if it's
404 * impossible to wake up and we prefer to be woken up later.
405 */
406static int h1_buf_available(void *target)
407{
408 struct h1c *h1c = target;
409
410 if ((h1c->flags & H1C_F_IN_ALLOC) && b_alloc_margin(&h1c->ibuf, 0)) {
Christopher Faulet6b81df72019-10-01 22:08:43 +0200411 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 +0200412 h1c->flags &= ~H1C_F_IN_ALLOC;
413 if (h1_recv_allowed(h1c))
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200414 tasklet_wakeup(h1c->wait_event.tasklet);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200415 return 1;
416 }
417
418 if ((h1c->flags & H1C_F_OUT_ALLOC) && b_alloc_margin(&h1c->obuf, 0)) {
Christopher Faulet6b81df72019-10-01 22:08:43 +0200419 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 +0200420 h1c->flags &= ~H1C_F_OUT_ALLOC;
Christopher Faulet660f6f32019-10-04 10:22:47 +0200421 if (h1c->h1s)
422 h1_wake_stream_for_send(h1c->h1s);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200423 return 1;
424 }
425
Christopher Fauletd17ad822020-09-24 15:14:29 +0200426 if ((h1c->flags & H1C_F_IN_SALLOC) && h1c->h1s && b_alloc_margin(&h1c->h1s->rxbuf, 0)) {
427 TRACE_STATE("unblocking h1c, stream rxbuf allocated", H1_EV_H1C_RECV|H1_EV_H1C_BLK|H1_EV_H1C_WAKE, h1c->conn);
428 h1c->flags &= ~H1C_F_IN_SALLOC;
429 tasklet_wakeup(h1c->wait_event.tasklet);
430 return 1;
431 }
432
Christopher Faulet51dbc942018-09-13 09:05:15 +0200433 return 0;
434}
435
436/*
437 * Allocate a buffer. If if fails, it adds the mux in buffer wait queue.
438 */
439static inline struct buffer *h1_get_buf(struct h1c *h1c, struct buffer *bptr)
440{
441 struct buffer *buf = NULL;
442
Willy Tarreau21046592020-02-26 10:39:36 +0100443 if (likely(!MT_LIST_ADDED(&h1c->buf_wait.list)) &&
Christopher Faulet51dbc942018-09-13 09:05:15 +0200444 unlikely((buf = b_alloc_margin(bptr, 0)) == NULL)) {
445 h1c->buf_wait.target = h1c;
446 h1c->buf_wait.wakeup_cb = h1_buf_available;
Willy Tarreau86891272020-07-10 08:22:26 +0200447 MT_LIST_ADDQ(&buffer_wq, &h1c->buf_wait.list);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200448 }
449 return buf;
450}
451
452/*
453 * Release a buffer, if any, and try to wake up entities waiting in the buffer
454 * wait queue.
455 */
456static inline void h1_release_buf(struct h1c *h1c, struct buffer *bptr)
457{
458 if (bptr->size) {
459 b_free(bptr);
460 offer_buffers(h1c->buf_wait.target, tasks_run_queue);
461 }
462}
463
Christopher Fauletaaa67bc2019-12-05 10:23:37 +0100464/* returns the number of streams in use on a connection to figure if it's idle
Christopher Faulet3ced1d12020-11-27 16:44:01 +0100465 * or not. We rely on H1C_F_ST_IDLE to know if the connection is in-use or
Christopher Fauletaaa67bc2019-12-05 10:23:37 +0100466 * not. This flag is only set when no H1S is attached and when the previous
467 * stream, if any, was fully terminated without any error and in K/A mode.
Willy Tarreau00f18a32019-01-26 12:19:01 +0100468 */
469static int h1_used_streams(struct connection *conn)
Christopher Faulet51dbc942018-09-13 09:05:15 +0200470{
Willy Tarreau3d2ee552018-12-19 14:12:10 +0100471 struct h1c *h1c = conn->ctx;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200472
Christopher Faulet3ced1d12020-11-27 16:44:01 +0100473 return ((h1c->flags & H1C_F_ST_IDLE) ? 0 : 1);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200474}
475
Willy Tarreau00f18a32019-01-26 12:19:01 +0100476/* returns the number of streams still available on a connection */
477static int h1_avail_streams(struct connection *conn)
Olivier Houchard8defe4b2018-12-02 01:31:17 +0100478{
Willy Tarreau00f18a32019-01-26 12:19:01 +0100479 return 1 - h1_used_streams(conn);
Olivier Houchard8defe4b2018-12-02 01:31:17 +0100480}
Christopher Faulet51dbc942018-09-13 09:05:15 +0200481
Christopher Faulet7a145d62020-08-05 11:31:16 +0200482/* Refresh the h1c task timeout if necessary */
483static void h1_refresh_timeout(struct h1c *h1c)
484{
485 if (h1c->task) {
Christopher Faulet3ced1d12020-11-27 16:44:01 +0100486 if (!(h1c->flags & H1C_F_ST_ALIVE) || (h1c->flags & H1C_F_ST_SHUTDOWN)) {
Christopher Faulet3c82d8b2020-10-05 17:11:16 +0200487 /* half-closed or dead connections : switch to clientfin/serverfin
488 * timeouts so that we don't hang too long on clients that have
489 * gone away (especially in tunnel mode).
Willy Tarreau4313d5a2020-09-08 15:40:57 +0200490 */
491 h1c->task->expire = tick_add(now_ms, h1c->shut_timeout);
Christopher Fauletadcd7892020-10-05 17:13:05 +0200492 TRACE_DEVEL("refreshing connection's timeout (dead or half-closed)", H1_EV_H1C_SEND|H1_EV_H1C_RECV, h1c->conn);
493 }
494 else if (b_data(&h1c->obuf)) {
495 /* connection with pending outgoing data, need a timeout (server or client). */
Christopher Faulet3c82d8b2020-10-05 17:11:16 +0200496 h1c->task->expire = tick_add(now_ms, h1c->timeout);
Christopher Fauletadcd7892020-10-05 17:13:05 +0200497 TRACE_DEVEL("refreshing connection's timeout (pending outgoing data)", H1_EV_H1C_SEND|H1_EV_H1C_RECV, h1c->conn);
498 }
Christopher Faulet3ced1d12020-11-27 16:44:01 +0100499 else if (!(h1c->flags & H1C_F_IS_BACK) && (h1c->flags & (H1C_F_ST_IDLE|H1C_F_ST_EMBRYONIC))) {
Christopher Fauletc4bfa592020-10-06 17:45:34 +0200500 /* front connections waiting for a stream need a timeout. */
501 h1c->task->expire = tick_add(now_ms, h1c->timeout);
Christopher Fauletadcd7892020-10-05 17:13:05 +0200502 TRACE_DEVEL("refreshing connection's timeout (alive front h1c without a CS)", H1_EV_H1C_SEND|H1_EV_H1C_RECV, h1c->conn);
Christopher Faulet7a145d62020-08-05 11:31:16 +0200503 }
Christopher Fauletadcd7892020-10-05 17:13:05 +0200504 else {
505 /* alive back connections of front connections with a conn-stream attached */
506 h1c->task->expire = TICK_ETERNITY;
507 TRACE_DEVEL("no connection timeout (alive back h1c or front h1c with a CS)", H1_EV_H1C_SEND|H1_EV_H1C_RECV, h1c->conn);
508 }
509
Christopher Fauletdbe57792020-10-05 17:50:58 +0200510 /* Finally set the idle expiration date if shorter */
511 h1c->task->expire = tick_first(h1c->task->expire, h1c->idle_exp);
Christopher Fauletadcd7892020-10-05 17:13:05 +0200512 TRACE_DEVEL("new expiration date", H1_EV_H1C_SEND|H1_EV_H1C_RECV, h1c->conn, 0, 0, (size_t[]){h1c->task->expire});
513 task_queue(h1c->task);
Christopher Faulet7a145d62020-08-05 11:31:16 +0200514 }
515}
Christopher Fauletdbe57792020-10-05 17:50:58 +0200516
Christopher Fauletc4bfa592020-10-06 17:45:34 +0200517static void h1_set_idle_expiration(struct h1c *h1c)
Christopher Fauletdbe57792020-10-05 17:50:58 +0200518{
519 if (h1c->flags & H1C_F_IS_BACK || !h1c->task) {
520 TRACE_DEVEL("no idle expiration (backend connection || no task)", H1_EV_H1C_RECV, h1c->conn);
521 h1c->idle_exp = TICK_ETERNITY;
522 return;
523 }
524
Christopher Faulet3ced1d12020-11-27 16:44:01 +0100525 if (h1c->flags & H1C_F_ST_IDLE) {
Christopher Fauletdbe57792020-10-05 17:50:58 +0200526 if (!tick_isset(h1c->idle_exp)) {
527 if ((h1c->flags & H1C_F_WAIT_NEXT_REQ) && /* Not the first request */
528 !b_data(&h1c->ibuf) && /* No input data */
529 tick_isset(h1c->px->timeout.httpka)) { /* K-A timeout set */
530 h1c->idle_exp = tick_add_ifset(now_ms, h1c->px->timeout.httpka);
531 TRACE_DEVEL("set idle expiration (keep-alive timeout)", H1_EV_H1C_RECV, h1c->conn);
532 }
533 else {
534 h1c->idle_exp = tick_add_ifset(now_ms, h1c->px->timeout.httpreq);
535 TRACE_DEVEL("set idle expiration (http-request timeout)", H1_EV_H1C_RECV, h1c->conn);
536 }
537 }
538 }
Christopher Faulet3ced1d12020-11-27 16:44:01 +0100539 else if (h1c->flags & H1C_F_ST_EMBRYONIC) {
Christopher Fauletdbe57792020-10-05 17:50:58 +0200540 if (!tick_isset(h1c->idle_exp)) {
541 h1c->idle_exp = tick_add_ifset(now_ms, h1c->px->timeout.httpreq);
542 TRACE_DEVEL("set idle expiration (http-request timeout)", H1_EV_H1C_RECV, h1c->conn);
543 }
544 }
545 else { // CS_ATTACHED or SHUTDOWN
546 h1c->idle_exp = TICK_ETERNITY;
547 TRACE_DEVEL("unset idle expiration (attached || shutdown)", H1_EV_H1C_RECV, h1c->conn);
548 }
549}
Christopher Faulet51dbc942018-09-13 09:05:15 +0200550/*****************************************************************/
551/* functions below are dedicated to the mux setup and management */
552/*****************************************************************/
Willy Tarreaufbdf90a2019-06-03 13:42:54 +0200553
554/* returns non-zero if there are input data pending for stream h1s. */
555static inline size_t h1s_data_pending(const struct h1s *h1s)
556{
557 const struct h1m *h1m;
558
Christopher Faulet0a799aa2020-09-24 09:52:52 +0200559 h1m = ((h1s->h1c->flags & H1C_F_IS_BACK) ? &h1s->res : &h1s->req);
Willy Tarreaufbdf90a2019-06-03 13:42:54 +0200560 if (h1m->state == H1_MSG_DONE)
Christopher Faulet76014fd2019-12-10 11:47:22 +0100561 return !(h1s->flags & H1S_F_PARSING_DONE);
Willy Tarreaufbdf90a2019-06-03 13:42:54 +0200562
563 return b_data(&h1s->h1c->ibuf);
564}
565
Christopher Faulet16df1782020-12-04 16:47:41 +0100566/* Creates a new conn-stream and the associate stream. <input> is used as input
567 * buffer for the stream. On success, it is transferred to the stream and the
568 * mux is no longer responsible of it. On error, <input> is unchanged, thus the
569 * mux must still take care of it. However, there is nothing special to do
570 * because, on success, <input> is updated to points on BUF_NULL. Thus, calling
571 * b_free() on it is always safe. This function returns the conn-stream on
572 * success or NULL on error. */
Christopher Faulet26256f82020-09-14 11:40:13 +0200573static struct conn_stream *h1s_new_cs(struct h1s *h1s, struct buffer *input)
Christopher Faulet47365272018-10-31 17:40:50 +0100574{
575 struct conn_stream *cs;
576
Christopher Faulet6b81df72019-10-01 22:08:43 +0200577 TRACE_ENTER(H1_EV_STRM_NEW, h1s->h1c->conn, h1s);
Christopher Faulet236c93b2020-07-02 09:19:54 +0200578 cs = cs_new(h1s->h1c->conn, h1s->h1c->conn->target);
Christopher Faulet6b81df72019-10-01 22:08:43 +0200579 if (!cs) {
580 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 +0100581 goto err;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200582 }
Christopher Faulet47365272018-10-31 17:40:50 +0100583 h1s->cs = cs;
584 cs->ctx = h1s;
585
586 if (h1s->flags & H1S_F_NOT_FIRST)
587 cs->flags |= CS_FL_NOT_FIRST;
Christopher Faulet3ced1d12020-11-27 16:44:01 +0100588 h1s->h1c->flags = (h1s->h1c->flags & ~H1C_F_ST_EMBRYONIC) | H1C_F_ST_ATTACHED;
Christopher Faulet47365272018-10-31 17:40:50 +0100589
Christopher Faulet27182292020-07-03 15:08:49 +0200590 if (global.tune.options & GTUNE_USE_SPLICE) {
591 TRACE_STATE("notify the mux can use splicing", H1_EV_STRM_NEW, h1s->h1c->conn, h1s);
Willy Tarreau17ccd1a2020-01-17 16:19:34 +0100592 cs->flags |= CS_FL_MAY_SPLICE;
Christopher Faulet27182292020-07-03 15:08:49 +0200593 }
Willy Tarreau17ccd1a2020-01-17 16:19:34 +0100594
Christopher Faulet26256f82020-09-14 11:40:13 +0200595 if (stream_create_from_cs(cs, input) < 0) {
Christopher Faulet6b81df72019-10-01 22:08:43 +0200596 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 +0100597 goto err;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200598 }
599
600 TRACE_LEAVE(H1_EV_STRM_NEW, h1s->h1c->conn, h1s);
Christopher Faulet47365272018-10-31 17:40:50 +0100601 return cs;
602
603 err:
604 cs_free(cs);
605 h1s->cs = NULL;
606 return NULL;
607}
608
Christopher Faulet2f0ec662020-09-24 10:30:15 +0200609static struct h1s *h1s_new(struct h1c *h1c)
Christopher Faulet51dbc942018-09-13 09:05:15 +0200610{
611 struct h1s *h1s;
612
Christopher Faulet6b81df72019-10-01 22:08:43 +0200613 TRACE_ENTER(H1_EV_H1S_NEW, h1c->conn);
614
Christopher Faulet51dbc942018-09-13 09:05:15 +0200615 h1s = pool_alloc(pool_head_h1s);
616 if (!h1s)
Christopher Faulet47365272018-10-31 17:40:50 +0100617 goto fail;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200618 h1s->h1c = h1c;
619 h1c->h1s = h1s;
Christopher Faulet2f0ec662020-09-24 10:30:15 +0200620 h1s->sess = NULL;
621 h1s->cs = NULL;
Christopher Fauletb992af02019-03-28 15:42:24 +0100622 h1s->flags = H1S_F_WANT_KAL;
Willy Tarreau1b0d4d12020-01-16 11:03:19 +0100623 h1s->subs = NULL;
Christopher Fauletd17ad822020-09-24 15:14:29 +0200624 h1s->rxbuf = BUF_NULL;
Christopher Faulet129817b2018-09-20 16:14:40 +0200625
626 h1m_init_req(&h1s->req);
Christopher Fauletb992af02019-03-28 15:42:24 +0100627 h1s->req.flags |= (H1_MF_NO_PHDR|H1_MF_CLEAN_CONN_HDR);
Christopher Faulet9768c262018-10-22 09:34:31 +0200628
Christopher Faulet129817b2018-09-20 16:14:40 +0200629 h1m_init_res(&h1s->res);
Christopher Fauletb992af02019-03-28 15:42:24 +0100630 h1s->res.flags |= (H1_MF_NO_PHDR|H1_MF_CLEAN_CONN_HDR);
Christopher Faulet129817b2018-09-20 16:14:40 +0200631
632 h1s->status = 0;
633 h1s->meth = HTTP_METH_OTHER;
634
Christopher Faulet47365272018-10-31 17:40:50 +0100635 if (h1c->flags & H1C_F_WAIT_NEXT_REQ)
636 h1s->flags |= H1S_F_NOT_FIRST;
Christopher Faulet3ced1d12020-11-27 16:44:01 +0100637 h1c->flags = (h1c->flags & ~(H1C_F_ST_IDLE|H1C_F_WAIT_NEXT_REQ)) | H1C_F_ST_EMBRYONIC;
Christopher Faulet47365272018-10-31 17:40:50 +0100638
Christopher Faulet2f0ec662020-09-24 10:30:15 +0200639 TRACE_LEAVE(H1_EV_H1S_NEW, h1c->conn, h1s);
640 return h1s;
Christopher Faulete9b70722019-04-08 10:46:02 +0200641
Christopher Faulet2f0ec662020-09-24 10:30:15 +0200642 fail:
643 TRACE_DEVEL("leaving in error", H1_EV_H1S_NEW|H1_EV_H1S_END|H1_EV_H1S_ERR, h1c->conn);
644 return NULL;
645}
Christopher Fauletfeb11742018-11-29 15:12:34 +0100646
Christopher Faulet2f0ec662020-09-24 10:30:15 +0200647static struct h1s *h1c_frt_stream_new(struct h1c *h1c)
648{
649 struct session *sess = h1c->conn->owner;
650 struct h1s *h1s;
651
652 TRACE_ENTER(H1_EV_H1S_NEW, h1c->conn);
653
654 h1s = h1s_new(h1c);
655 if (!h1s)
656 goto fail;
657
658 h1s->sess = sess;
659
660 if (h1c->px->options2 & PR_O2_REQBUG_OK)
661 h1s->req.err_pos = -1;
662
Christopher Fauletc4bfa592020-10-06 17:45:34 +0200663 h1c->idle_exp = TICK_ETERNITY;
664 h1_set_idle_expiration(h1c);
Christopher Faulet6b81df72019-10-01 22:08:43 +0200665 TRACE_LEAVE(H1_EV_H1S_NEW, h1c->conn, h1s);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200666 return h1s;
Christopher Faulet47365272018-10-31 17:40:50 +0100667
Christopher Faulet2f0ec662020-09-24 10:30:15 +0200668 fail:
Christopher Faulet2f0ec662020-09-24 10:30:15 +0200669 TRACE_DEVEL("leaving in error", H1_EV_H1S_NEW|H1_EV_H1S_END|H1_EV_H1S_ERR, h1c->conn);
670 return NULL;
671}
672
673static struct h1s *h1c_bck_stream_new(struct h1c *h1c, struct conn_stream *cs, struct session *sess)
674{
675 struct h1s *h1s;
676
677 TRACE_ENTER(H1_EV_H1S_NEW, h1c->conn);
678
679 h1s = h1s_new(h1c);
680 if (!h1s)
681 goto fail;
682
683 h1s->cs = cs;
684 h1s->sess = sess;
685 cs->ctx = h1s;
686
Christopher Faulet3ced1d12020-11-27 16:44:01 +0100687 h1c->flags = (h1c->flags & ~H1C_F_ST_EMBRYONIC) | H1C_F_ST_ATTACHED;
Christopher Faulet2f0ec662020-09-24 10:30:15 +0200688
689 if (h1c->px->options2 & PR_O2_RSPBUG_OK)
690 h1s->res.err_pos = -1;
691
692 TRACE_LEAVE(H1_EV_H1S_NEW, h1c->conn, h1s);
693 return h1s;
694
695 fail:
Christopher Faulet6b81df72019-10-01 22:08:43 +0200696 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 +0100697 return NULL;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200698}
699
700static void h1s_destroy(struct h1s *h1s)
701{
Christopher Fauletf2824e62018-10-01 12:12:37 +0200702 if (h1s) {
703 struct h1c *h1c = h1s->h1c;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200704
Christopher Faulet6b81df72019-10-01 22:08:43 +0200705 TRACE_POINT(H1_EV_H1S_END, h1c->conn, h1s);
Christopher Fauletf2824e62018-10-01 12:12:37 +0200706 h1c->h1s = NULL;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200707
Willy Tarreau1b0d4d12020-01-16 11:03:19 +0100708 if (h1s->subs)
709 h1s->subs->events = 0;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200710
Christopher Fauletd17ad822020-09-24 15:14:29 +0200711 h1_release_buf(h1c, &h1s->rxbuf);
712
Christopher Faulet3ced1d12020-11-27 16:44:01 +0100713 h1c->flags &= ~(H1C_F_WAIT_OPPOSITE|H1C_F_WANT_SPLICE|H1C_F_ST_EMBRYONIC|H1C_F_ST_ATTACHED|
Christopher Faulet295b8d12020-09-30 17:14:55 +0200714 H1C_F_OUT_FULL|H1C_F_OUT_ALLOC|H1C_F_IN_SALLOC|
715 H1C_F_CO_MSG_MORE|H1C_F_CO_STREAMER);
Christopher Faulet60ef12c2020-09-24 10:05:44 +0200716 if (h1s->flags & H1S_F_ERROR) {
Christopher Faulet3ced1d12020-11-27 16:44:01 +0100717 h1c->flags |= H1C_F_ST_ERROR;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200718 TRACE_STATE("h1s on error, set error on h1c", H1_EV_H1C_ERR, h1c->conn, h1s);
719 }
Christopher Fauletaaa67bc2019-12-05 10:23:37 +0100720
Christopher Faulet3ced1d12020-11-27 16:44:01 +0100721 if (!(h1c->flags & (H1C_F_ST_ERROR|H1C_F_ST_SHUTDOWN)) && /* No error/shutdown on h1c */
Christopher Fauletaaa67bc2019-12-05 10:23:37 +0100722 !(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 +0100723 (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 +0100724 h1s->req.state == H1_MSG_DONE && h1s->res.state == H1_MSG_DONE) { /* req/res in DONE state */
Christopher Faulet3ced1d12020-11-27 16:44:01 +0100725 h1c->flags |= (H1C_F_ST_IDLE|H1C_F_WAIT_NEXT_REQ);
Christopher Fauletaaa67bc2019-12-05 10:23:37 +0100726 TRACE_STATE("set idle mode on h1c, waiting for the next request", H1_EV_H1C_ERR, h1c->conn, h1s);
727 }
Christopher Faulet3c82d8b2020-10-05 17:11:16 +0200728 else {
729 TRACE_STATE("set shudown on h1c", H1_EV_H1C_ERR, h1c->conn, h1s);
Christopher Faulet3ced1d12020-11-27 16:44:01 +0100730 h1c->flags |= H1C_F_ST_SHUTDOWN;
Christopher Faulet3c82d8b2020-10-05 17:11:16 +0200731 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200732 pool_free(pool_head_h1s, h1s);
733 }
Christopher Faulet51dbc942018-09-13 09:05:15 +0200734}
735
736/*
Christopher Faulet51f73eb2019-04-08 11:22:47 +0200737 * Initialize the mux once it's attached. It is expected that conn->ctx points
Ilya Shipitsin47d17182020-06-21 21:42:57 +0500738 * to the existing conn_stream (for outgoing connections or for incoming ones
739 * during a mux upgrade) or NULL (for incoming ones during the connection
Christopher Faulet51f73eb2019-04-08 11:22:47 +0200740 * establishment). <input> is always used as Input buffer and may contain
741 * data. It is the caller responsibility to not reuse it anymore. Returns < 0 on
742 * error.
Christopher Faulet51dbc942018-09-13 09:05:15 +0200743 */
Christopher Faulet51f73eb2019-04-08 11:22:47 +0200744static int h1_init(struct connection *conn, struct proxy *proxy, struct session *sess,
745 struct buffer *input)
Christopher Faulet51dbc942018-09-13 09:05:15 +0200746{
Christopher Faulet51dbc942018-09-13 09:05:15 +0200747 struct h1c *h1c;
Christopher Fauletb8093cf2019-01-03 16:27:28 +0100748 struct task *t = NULL;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200749 void *conn_ctx = conn->ctx;
750
751 TRACE_ENTER(H1_EV_H1C_NEW);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200752
753 h1c = pool_alloc(pool_head_h1c);
754 if (!h1c)
755 goto fail_h1c;
756 h1c->conn = conn;
757 h1c->px = proxy;
758
Christopher Faulet3ced1d12020-11-27 16:44:01 +0100759 h1c->flags = H1C_F_ST_IDLE;
Christopher Fauletc18fc232020-10-06 17:41:36 +0200760 h1c->errcode = 0;
Christopher Faulet51f73eb2019-04-08 11:22:47 +0200761 h1c->ibuf = *input;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200762 h1c->obuf = BUF_NULL;
763 h1c->h1s = NULL;
Christopher Faulet51f73eb2019-04-08 11:22:47 +0200764 h1c->task = NULL;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200765
Willy Tarreau21046592020-02-26 10:39:36 +0100766 MT_LIST_INIT(&h1c->buf_wait.list);
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200767 h1c->wait_event.tasklet = tasklet_new();
768 if (!h1c->wait_event.tasklet)
Christopher Faulet51dbc942018-09-13 09:05:15 +0200769 goto fail;
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200770 h1c->wait_event.tasklet->process = h1_io_cb;
771 h1c->wait_event.tasklet->context = h1c;
Willy Tarreau4f6516d2018-12-19 13:59:17 +0100772 h1c->wait_event.events = 0;
Christopher Fauletdbe57792020-10-05 17:50:58 +0200773 h1c->idle_exp = TICK_ETERNITY;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200774
Christopher Faulete9b70722019-04-08 10:46:02 +0200775 if (conn_is_back(conn)) {
Christopher Faulet0a799aa2020-09-24 09:52:52 +0200776 h1c->flags |= (H1C_F_IS_BACK|H1C_F_WAIT_OPPOSITE);
Christopher Fauletb8093cf2019-01-03 16:27:28 +0100777 h1c->shut_timeout = h1c->timeout = proxy->timeout.server;
778 if (tick_isset(proxy->timeout.serverfin))
779 h1c->shut_timeout = proxy->timeout.serverfin;
780 } else {
781 h1c->shut_timeout = h1c->timeout = proxy->timeout.client;
782 if (tick_isset(proxy->timeout.clientfin))
783 h1c->shut_timeout = proxy->timeout.clientfin;
784 }
785 if (tick_isset(h1c->timeout)) {
786 t = task_new(tid_bit);
787 if (!t)
788 goto fail;
789
790 h1c->task = t;
791 t->process = h1_timeout_task;
792 t->context = h1c;
Christopher Fauletc4bfa592020-10-06 17:45:34 +0200793
Christopher Fauletb8093cf2019-01-03 16:27:28 +0100794 t->expire = tick_add(now_ms, h1c->timeout);
795 }
796
Willy Tarreau3d2ee552018-12-19 14:12:10 +0100797 conn->ctx = h1c;
Christopher Faulet129817b2018-09-20 16:14:40 +0200798
Christopher Fauletc4bfa592020-10-06 17:45:34 +0200799 if (h1c->flags & H1C_F_IS_BACK) {
800 /* Create a new H1S now for backend connection only */
Christopher Faulet2f0ec662020-09-24 10:30:15 +0200801 if (!h1c_bck_stream_new(h1c, conn_ctx, sess))
802 goto fail;
803 }
Christopher Fauletb8093cf2019-01-03 16:27:28 +0100804
Christopher Fauletc4bfa592020-10-06 17:45:34 +0200805 if (t) {
806 h1_set_idle_expiration(h1c);
807 t->expire = tick_first(t->expire, h1c->idle_exp);
Christopher Fauletb8093cf2019-01-03 16:27:28 +0100808 task_queue(t);
Christopher Fauletc4bfa592020-10-06 17:45:34 +0200809 }
Christopher Fauletb8093cf2019-01-03 16:27:28 +0100810
Christopher Fauletc4bfa592020-10-06 17:45:34 +0200811 /* prepare to read something */
812 if (h1_recv_allowed(h1c))
Christopher Faulet089acd52020-09-21 10:57:52 +0200813 h1c->conn->xprt->subscribe(h1c->conn, h1c->conn->xprt_ctx, SUB_RETRY_RECV, &h1c->wait_event);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200814
815 /* mux->wake will be called soon to complete the operation */
Christopher Faulet6b81df72019-10-01 22:08:43 +0200816 TRACE_LEAVE(H1_EV_H1C_NEW, conn, h1c->h1s);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200817 return 0;
818
819 fail:
Willy Tarreauf6562792019-05-07 19:05:35 +0200820 task_destroy(t);
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200821 if (h1c->wait_event.tasklet)
822 tasklet_free(h1c->wait_event.tasklet);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200823 pool_free(pool_head_h1c, h1c);
824 fail_h1c:
Christopher Faulet6b81df72019-10-01 22:08:43 +0200825 conn->ctx = conn_ctx; // restore saved context
826 TRACE_DEVEL("leaving in error", H1_EV_H1C_NEW|H1_EV_H1C_END|H1_EV_H1C_ERR);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200827 return -1;
828}
829
Christopher Faulet73c12072019-04-08 11:23:22 +0200830/* release function. This one should be called to free all resources allocated
831 * to the mux.
Christopher Faulet51dbc942018-09-13 09:05:15 +0200832 */
Christopher Faulet73c12072019-04-08 11:23:22 +0200833static void h1_release(struct h1c *h1c)
Christopher Faulet51dbc942018-09-13 09:05:15 +0200834{
Christopher Faulet61840e72019-04-15 09:33:32 +0200835 struct connection *conn = NULL;
Christopher Faulet39a96ee2019-04-08 10:52:21 +0200836
Christopher Faulet6b81df72019-10-01 22:08:43 +0200837 TRACE_POINT(H1_EV_H1C_END);
838
Christopher Faulet51dbc942018-09-13 09:05:15 +0200839 if (h1c) {
Christopher Faulet61840e72019-04-15 09:33:32 +0200840 /* The connection must be aattached to this mux to be released */
841 if (h1c->conn && h1c->conn->ctx == h1c)
842 conn = h1c->conn;
843
Christopher Faulet6b81df72019-10-01 22:08:43 +0200844 TRACE_DEVEL("freeing h1c", H1_EV_H1C_END, conn);
845
Christopher Faulet61840e72019-04-15 09:33:32 +0200846 if (conn && h1c->flags & H1C_F_UPG_H2C) {
Christopher Faulet6b81df72019-10-01 22:08:43 +0200847 TRACE_DEVEL("upgrading H1 to H2", H1_EV_H1C_END, conn);
Olivier Houchard2ab3dad2019-07-03 13:08:18 +0200848 /* Make sure we're no longer subscribed to anything */
849 if (h1c->wait_event.events)
850 conn->xprt->unsubscribe(conn, conn->xprt_ctx,
851 h1c->wait_event.events, &h1c->wait_event);
Christopher Fauletc985f6c2019-07-15 11:42:52 +0200852 if (conn_upgrade_mux_fe(conn, NULL, &h1c->ibuf, ist("h2"), PROTO_MODE_HTTP) != -1) {
Christopher Faulet0ef372a2019-04-08 10:57:20 +0200853 /* connection successfully upgraded to H2, this
854 * mux was already released */
855 return;
856 }
Christopher Faulet6b81df72019-10-01 22:08:43 +0200857 TRACE_DEVEL("h2 upgrade failed", H1_EV_H1C_END|H1_EV_H1C_ERR, conn);
Christopher Faulet0ef372a2019-04-08 10:57:20 +0200858 sess_log(conn->owner); /* Log if the upgrade failed */
859 }
860
Olivier Houchard45c44372019-06-11 14:06:23 +0200861
Willy Tarreau21046592020-02-26 10:39:36 +0100862 if (MT_LIST_ADDED(&h1c->buf_wait.list))
863 MT_LIST_DEL(&h1c->buf_wait.list);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200864
865 h1_release_buf(h1c, &h1c->ibuf);
866 h1_release_buf(h1c, &h1c->obuf);
867
Christopher Fauletb8093cf2019-01-03 16:27:28 +0100868 if (h1c->task) {
869 h1c->task->context = NULL;
870 task_wakeup(h1c->task, TASK_WOKEN_OTHER);
871 h1c->task = NULL;
872 }
873
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200874 if (h1c->wait_event.tasklet)
875 tasklet_free(h1c->wait_event.tasklet);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200876
Christopher Fauletf2824e62018-10-01 12:12:37 +0200877 h1s_destroy(h1c->h1s);
Olivier Houchard0e079372019-04-15 17:51:16 +0200878 if (conn && h1c->wait_event.events != 0)
Olivier Houcharde179d0e2019-03-21 18:27:17 +0100879 conn->xprt->unsubscribe(conn, conn->xprt_ctx, h1c->wait_event.events,
Olivier Houchard0e079372019-04-15 17:51:16 +0200880 &h1c->wait_event);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200881 pool_free(pool_head_h1c, h1c);
882 }
883
Christopher Faulet39a96ee2019-04-08 10:52:21 +0200884 if (conn) {
885 conn->mux = NULL;
886 conn->ctx = NULL;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200887 TRACE_DEVEL("freeing conn", H1_EV_H1C_END, conn);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200888
Christopher Faulet39a96ee2019-04-08 10:52:21 +0200889 conn_stop_tracking(conn);
890 conn_full_close(conn);
891 if (conn->destroy_cb)
892 conn->destroy_cb(conn);
893 conn_free(conn);
894 }
Christopher Faulet51dbc942018-09-13 09:05:15 +0200895}
896
897/******************************************************/
898/* functions below are for the H1 protocol processing */
899/******************************************************/
Christopher Faulet9768c262018-10-22 09:34:31 +0200900/* Parse the request version and set H1_MF_VER_11 on <h1m> if the version is
901 * greater or equal to 1.1
Christopher Fauletf2824e62018-10-01 12:12:37 +0200902 */
Christopher Faulet570d1612018-11-26 11:13:57 +0100903static void h1_parse_req_vsn(struct h1m *h1m, const struct htx_sl *sl)
Christopher Fauletf2824e62018-10-01 12:12:37 +0200904{
Christopher Faulet570d1612018-11-26 11:13:57 +0100905 const char *p = HTX_SL_REQ_VPTR(sl);
Christopher Faulet9768c262018-10-22 09:34:31 +0200906
Christopher Faulet570d1612018-11-26 11:13:57 +0100907 if ((HTX_SL_REQ_VLEN(sl) == 8) &&
Christopher Faulet9768c262018-10-22 09:34:31 +0200908 (*(p + 5) > '1' ||
909 (*(p + 5) == '1' && *(p + 7) >= '1')))
910 h1m->flags |= H1_MF_VER_11;
911}
Christopher Fauletf2824e62018-10-01 12:12:37 +0200912
Christopher Faulet9768c262018-10-22 09:34:31 +0200913/* Parse the response version and set H1_MF_VER_11 on <h1m> if the version is
914 * greater or equal to 1.1
915 */
Christopher Faulet570d1612018-11-26 11:13:57 +0100916static void h1_parse_res_vsn(struct h1m *h1m, const struct htx_sl *sl)
Christopher Faulet9768c262018-10-22 09:34:31 +0200917{
Christopher Faulet570d1612018-11-26 11:13:57 +0100918 const char *p = HTX_SL_RES_VPTR(sl);
Christopher Fauletf2824e62018-10-01 12:12:37 +0200919
Christopher Faulet570d1612018-11-26 11:13:57 +0100920 if ((HTX_SL_RES_VLEN(sl) == 8) &&
Christopher Faulet9768c262018-10-22 09:34:31 +0200921 (*(p + 5) > '1' ||
922 (*(p + 5) == '1' && *(p + 7) >= '1')))
923 h1m->flags |= H1_MF_VER_11;
924}
Christopher Fauletf2824e62018-10-01 12:12:37 +0200925
Christopher Fauletf2824e62018-10-01 12:12:37 +0200926/* Deduce the connection mode of the client connection, depending on the
927 * configuration and the H1 message flags. This function is called twice, the
928 * first time when the request is parsed and the second time when the response
929 * is parsed.
930 */
931static void h1_set_cli_conn_mode(struct h1s *h1s, struct h1m *h1m)
932{
933 struct proxy *fe = h1s->h1c->px;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200934
935 if (h1m->flags & H1_MF_RESP) {
Christopher Fauletb992af02019-03-28 15:42:24 +0100936 /* Output direction: second pass */
Christopher Fauletf2824e62018-10-01 12:12:37 +0200937 if ((h1s->meth == HTTP_METH_CONNECT && h1s->status == 200) ||
Christopher Fauletb992af02019-03-28 15:42:24 +0100938 h1s->status == 101) {
939 /* Either we've established an explicit tunnel, or we're
940 * switching the protocol. In both cases, we're very unlikely to
941 * understand the next protocols. We have to switch to tunnel
942 * mode, so that we transfer the request and responses then let
943 * this protocol pass unmodified. When we later implement
944 * specific parsers for such protocols, we'll want to check the
945 * Upgrade header which contains information about that protocol
946 * for responses with status 101 (eg: see RFC2817 about TLS).
947 */
Christopher Fauletf2824e62018-10-01 12:12:37 +0200948 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_TUN;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200949 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 +0100950 }
951 else if (h1s->flags & H1S_F_WANT_KAL) {
952 /* By default the client is in KAL mode. CLOSE mode mean
953 * it is imposed by the client itself. So only change
954 * KAL mode here. */
955 if (!(h1m->flags & H1_MF_XFER_LEN) || (h1m->flags & H1_MF_CONN_CLO)) {
956 /* no length known or explicit close => close */
957 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200958 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 +0100959 }
960 else if (!(h1m->flags & H1_MF_CONN_KAL) &&
961 (fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_CLO) {
Ilya Shipitsinc02a23f2020-05-06 00:53:22 +0500962 /* no explicit keep-alive and option httpclose => close */
Christopher Fauletb992af02019-03-28 15:42:24 +0100963 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200964 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 +0100965 }
966 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200967 }
968 else {
Christopher Fauletb992af02019-03-28 15:42:24 +0100969 /* Input direction: first pass */
970 if (!(h1m->flags & (H1_MF_VER_11|H1_MF_CONN_KAL)) || h1m->flags & H1_MF_CONN_CLO) {
971 /* no explicit keep-alive in HTTP/1.0 or explicit close => close*/
Christopher Fauletf2824e62018-10-01 12:12:37 +0200972 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200973 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 +0100974 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200975 }
976
977 /* If KAL, check if the frontend is stopping. If yes, switch in CLO mode */
Willy Tarreauc3914d42020-09-24 08:39:22 +0200978 if (h1s->flags & H1S_F_WANT_KAL && fe->disabled) {
Christopher Fauletf2824e62018-10-01 12:12:37 +0200979 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200980 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);
981 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200982}
983
984/* Deduce the connection mode of the client connection, depending on the
985 * configuration and the H1 message flags. This function is called twice, the
986 * first time when the request is parsed and the second time when the response
987 * is parsed.
988 */
989static void h1_set_srv_conn_mode(struct h1s *h1s, struct h1m *h1m)
990{
Olivier Houchardf502aca2018-12-14 19:42:40 +0100991 struct session *sess = h1s->sess;
Christopher Fauletb992af02019-03-28 15:42:24 +0100992 struct proxy *be = h1s->h1c->px;
Olivier Houchardf502aca2018-12-14 19:42:40 +0100993 int fe_flags = sess ? sess->fe->options : 0;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200994
Christopher Fauletf2824e62018-10-01 12:12:37 +0200995 if (h1m->flags & H1_MF_RESP) {
Christopher Fauletb992af02019-03-28 15:42:24 +0100996 /* Input direction: second pass */
Christopher Fauletf2824e62018-10-01 12:12:37 +0200997 if ((h1s->meth == HTTP_METH_CONNECT && h1s->status == 200) ||
Christopher Fauletb992af02019-03-28 15:42:24 +0100998 h1s->status == 101) {
999 /* Either we've established an explicit tunnel, or we're
1000 * switching the protocol. In both cases, we're very unlikely to
1001 * understand the next protocols. We have to switch to tunnel
1002 * mode, so that we transfer the request and responses then let
1003 * this protocol pass unmodified. When we later implement
1004 * specific parsers for such protocols, we'll want to check the
1005 * Upgrade header which contains information about that protocol
1006 * for responses with status 101 (eg: see RFC2817 about TLS).
1007 */
Christopher Fauletf2824e62018-10-01 12:12:37 +02001008 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_TUN;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001009 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 +01001010 }
1011 else if (h1s->flags & H1S_F_WANT_KAL) {
1012 /* By default the server is in KAL mode. CLOSE mode mean
1013 * it is imposed by haproxy itself. So only change KAL
1014 * mode here. */
1015 if (!(h1m->flags & H1_MF_XFER_LEN) || h1m->flags & H1_MF_CONN_CLO ||
1016 !(h1m->flags & (H1_MF_VER_11|H1_MF_CONN_KAL))){
1017 /* no length known or explicit close or no explicit keep-alive in HTTP/1.0 => close */
1018 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001019 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 +01001020 }
1021 }
Christopher Fauletf2824e62018-10-01 12:12:37 +02001022 }
Christopher Faulet70033782018-12-05 13:50:11 +01001023 else {
Christopher Fauletb992af02019-03-28 15:42:24 +01001024 /* Output direction: first pass */
1025 if (h1m->flags & H1_MF_CONN_CLO) {
1026 /* explicit close => close */
Christopher Faulet70033782018-12-05 13:50:11 +01001027 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001028 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 +01001029 }
1030 else if (!(h1m->flags & H1_MF_CONN_KAL) &&
1031 ((fe_flags & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
1032 (be->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
1033 (fe_flags & PR_O_HTTP_MODE) == PR_O_HTTP_CLO ||
1034 (be->options & PR_O_HTTP_MODE) == PR_O_HTTP_CLO)) {
1035 /* no explicit keep-alive option httpclose/server-close => close */
1036 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001037 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 +01001038 }
Christopher Faulet70033782018-12-05 13:50:11 +01001039 }
Christopher Fauletf2824e62018-10-01 12:12:37 +02001040
1041 /* If KAL, check if the backend is stopping. If yes, switch in CLO mode */
Willy Tarreauc3914d42020-09-24 08:39:22 +02001042 if (h1s->flags & H1S_F_WANT_KAL && be->disabled) {
Christopher Fauletf2824e62018-10-01 12:12:37 +02001043 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001044 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);
1045 }
Christopher Fauletf2824e62018-10-01 12:12:37 +02001046}
1047
Christopher Fauletb992af02019-03-28 15:42:24 +01001048static void h1_update_req_conn_value(struct h1s *h1s, struct h1m *h1m, struct ist *conn_val)
Christopher Fauletf2824e62018-10-01 12:12:37 +02001049{
1050 struct proxy *px = h1s->h1c->px;
Christopher Fauletf2824e62018-10-01 12:12:37 +02001051
1052 /* Don't update "Connection:" header in TUNNEL mode or if "Upgrage"
1053 * token is found
1054 */
1055 if (h1s->flags & H1S_F_WANT_TUN || h1m->flags & H1_MF_CONN_UPG)
Christopher Faulet9768c262018-10-22 09:34:31 +02001056 return;
Christopher Fauletf2824e62018-10-01 12:12:37 +02001057
1058 if (h1s->flags & H1S_F_WANT_KAL || px->options2 & PR_O2_FAKE_KA) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001059 if (!(h1m->flags & H1_MF_VER_11)) {
1060 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 +01001061 *conn_val = ist("keep-alive");
Christopher Faulet6b81df72019-10-01 22:08:43 +02001062 }
Christopher Fauletf2824e62018-10-01 12:12:37 +02001063 }
1064 else { /* H1S_F_WANT_CLO && !PR_O2_FAKE_KA */
Christopher Faulet6b81df72019-10-01 22:08:43 +02001065 if (h1m->flags & H1_MF_VER_11) {
1066 TRACE_STATE("add \"Connection: close\"", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1s->h1c->conn, h1s);
Christopher Fauletb992af02019-03-28 15:42:24 +01001067 *conn_val = ist("close");
Christopher Faulet6b81df72019-10-01 22:08:43 +02001068 }
Christopher Fauletf2824e62018-10-01 12:12:37 +02001069 }
Christopher Fauletf2824e62018-10-01 12:12:37 +02001070}
1071
Christopher Fauletb992af02019-03-28 15:42:24 +01001072static void h1_update_res_conn_value(struct h1s *h1s, struct h1m *h1m, struct ist *conn_val)
Christopher Fauletf2824e62018-10-01 12:12:37 +02001073{
Christopher Fauletf2824e62018-10-01 12:12:37 +02001074 /* Don't update "Connection:" header in TUNNEL mode or if "Upgrage"
1075 * token is found
1076 */
1077 if (h1s->flags & H1S_F_WANT_TUN || h1m->flags & H1_MF_CONN_UPG)
Christopher Faulet9768c262018-10-22 09:34:31 +02001078 return;
Christopher Fauletf2824e62018-10-01 12:12:37 +02001079
1080 if (h1s->flags & H1S_F_WANT_KAL) {
Christopher Fauletb992af02019-03-28 15:42:24 +01001081 if (!(h1m->flags & H1_MF_VER_11) ||
Christopher Faulet6b81df72019-10-01 22:08:43 +02001082 !((h1m->flags & h1s->req.flags) & H1_MF_VER_11)) {
1083 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 +01001084 *conn_val = ist("keep-alive");
Christopher Faulet6b81df72019-10-01 22:08:43 +02001085 }
Christopher Fauletf2824e62018-10-01 12:12:37 +02001086 }
1087 else { /* H1S_F_WANT_CLO */
Christopher Faulet6b81df72019-10-01 22:08:43 +02001088 if (h1m->flags & H1_MF_VER_11) {
1089 TRACE_STATE("add \"Connection: close\"", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1s->h1c->conn, h1s);
Christopher Fauletb992af02019-03-28 15:42:24 +01001090 *conn_val = ist("close");
Christopher Faulet6b81df72019-10-01 22:08:43 +02001091 }
Christopher Fauletf2824e62018-10-01 12:12:37 +02001092 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001093}
Christopher Fauletf2824e62018-10-01 12:12:37 +02001094
Christopher Fauletb992af02019-03-28 15:42:24 +01001095static void h1_process_input_conn_mode(struct h1s *h1s, struct h1m *h1m, struct htx *htx)
Christopher Faulet9768c262018-10-22 09:34:31 +02001096{
Christopher Faulet0a799aa2020-09-24 09:52:52 +02001097 if (!(h1s->h1c->flags & H1C_F_IS_BACK))
Christopher Faulet9768c262018-10-22 09:34:31 +02001098 h1_set_cli_conn_mode(h1s, h1m);
Christopher Fauletb992af02019-03-28 15:42:24 +01001099 else
Christopher Faulet9768c262018-10-22 09:34:31 +02001100 h1_set_srv_conn_mode(h1s, h1m);
Christopher Fauletf2824e62018-10-01 12:12:37 +02001101}
1102
Christopher Fauletb992af02019-03-28 15:42:24 +01001103static void h1_process_output_conn_mode(struct h1s *h1s, struct h1m *h1m, struct ist *conn_val)
1104{
Christopher Faulet0a799aa2020-09-24 09:52:52 +02001105 if (!(h1s->h1c->flags & H1C_F_IS_BACK))
Christopher Fauletb992af02019-03-28 15:42:24 +01001106 h1_set_cli_conn_mode(h1s, h1m);
1107 else
1108 h1_set_srv_conn_mode(h1s, h1m);
1109
1110 if (!(h1m->flags & H1_MF_RESP))
1111 h1_update_req_conn_value(h1s, h1m, conn_val);
1112 else
1113 h1_update_res_conn_value(h1s, h1m, conn_val);
1114}
Christopher Faulete44769b2018-11-29 23:01:45 +01001115
Christopher Faulet98fbe952019-07-22 16:18:24 +02001116/* Try to adjust the case of the message header name using the global map
1117 * <hdrs_map>.
1118 */
1119static void h1_adjust_case_outgoing_hdr(struct h1s *h1s, struct h1m *h1m, struct ist *name)
1120{
1121 struct ebpt_node *node;
1122 struct h1_hdr_entry *entry;
1123
1124 /* No entry in the map, do nothing */
1125 if (eb_is_empty(&hdrs_map.map))
1126 return;
1127
1128 /* No conversion fo the request headers */
1129 if (!(h1m->flags & H1_MF_RESP) && !(h1s->h1c->px->options2 & PR_O2_H1_ADJ_BUGSRV))
1130 return;
1131
1132 /* No conversion fo the response headers */
1133 if ((h1m->flags & H1_MF_RESP) && !(h1s->h1c->px->options2 & PR_O2_H1_ADJ_BUGCLI))
1134 return;
1135
1136 node = ebis_lookup_len(&hdrs_map.map, name->ptr, name->len);
1137 if (!node)
1138 return;
1139 entry = container_of(node, struct h1_hdr_entry, node);
1140 name->ptr = entry->name.ptr;
1141 name->len = entry->name.len;
1142}
1143
Christopher Faulete44769b2018-11-29 23:01:45 +01001144/* Append the description of what is present in error snapshot <es> into <out>.
1145 * The description must be small enough to always fit in a buffer. The output
1146 * buffer may be the trash so the trash must not be used inside this function.
1147 */
1148static void h1_show_error_snapshot(struct buffer *out, const struct error_snapshot *es)
1149{
1150 chunk_appendf(out,
Christopher Fauletaa75b3d2018-12-05 16:20:40 +01001151 " H1 connection flags 0x%08x, H1 stream flags 0x%08x\n"
1152 " H1 msg state %s(%d), H1 msg flags 0x%08x\n"
1153 " H1 chunk len %lld bytes, H1 body len %lld bytes :\n",
1154 es->ctx.h1.c_flags, es->ctx.h1.s_flags,
1155 h1m_state_str(es->ctx.h1.state), es->ctx.h1.state,
1156 es->ctx.h1.m_flags, es->ctx.h1.m_clen, es->ctx.h1.m_blen);
Christopher Faulete44769b2018-11-29 23:01:45 +01001157}
1158/*
1159 * Capture a bad request or response and archive it in the proxy's structure.
1160 * By default it tries to report the error position as h1m->err_pos. However if
1161 * this one is not set, it will then report h1m->next, which is the last known
1162 * parsing point. The function is able to deal with wrapping buffers. It always
1163 * displays buffers as a contiguous area starting at buf->p. The direction is
1164 * determined thanks to the h1m's flags.
1165 */
1166static void h1_capture_bad_message(struct h1c *h1c, struct h1s *h1s,
1167 struct h1m *h1m, struct buffer *buf)
1168{
Christopher Fauletdb2c17d2020-10-15 17:19:46 +02001169 struct session *sess = h1s->sess;
Christopher Faulete44769b2018-11-29 23:01:45 +01001170 struct proxy *proxy = h1c->px;
Olivier Houchardbdb00c52020-03-12 15:30:17 +01001171 struct proxy *other_end;
Christopher Faulete44769b2018-11-29 23:01:45 +01001172 union error_snapshot_ctx ctx;
1173
Christopher Faulet3ced1d12020-11-27 16:44:01 +01001174 if ((h1c->flags & H1C_F_ST_ATTACHED) && h1s->cs->data) {
Olivier Houchardbdb00c52020-03-12 15:30:17 +01001175 if (sess == NULL)
1176 sess = si_strm(h1s->cs->data)->sess;
1177 if (!(h1m->flags & H1_MF_RESP))
1178 other_end = si_strm(h1s->cs->data)->be;
1179 else
1180 other_end = sess->fe;
1181 } else
1182 other_end = NULL;
Christopher Faulete44769b2018-11-29 23:01:45 +01001183
1184 /* http-specific part now */
1185 ctx.h1.state = h1m->state;
1186 ctx.h1.c_flags = h1c->flags;
1187 ctx.h1.s_flags = h1s->flags;
1188 ctx.h1.m_flags = h1m->flags;
1189 ctx.h1.m_clen = h1m->curr_len;
1190 ctx.h1.m_blen = h1m->body_len;
1191
1192 proxy_capture_error(proxy, !!(h1m->flags & H1_MF_RESP), other_end,
1193 h1c->conn->target, sess, buf, 0, 0,
Christopher Fauletaa75b3d2018-12-05 16:20:40 +01001194 (h1m->err_pos >= 0) ? h1m->err_pos : h1m->next,
1195 &ctx, h1_show_error_snapshot);
Christopher Faulete44769b2018-11-29 23:01:45 +01001196}
1197
Christopher Fauletadb22202018-12-12 10:32:09 +01001198/* Emit the chunksize followed by a CRLF in front of data of the buffer
1199 * <buf>. It goes backwards and starts with the byte before the buffer's
1200 * head. The caller is responsible for ensuring there is enough room left before
1201 * the buffer's head for the string.
1202 */
1203static void h1_emit_chunk_size(struct buffer *buf, size_t chksz)
1204{
1205 char *beg, *end;
1206
1207 beg = end = b_head(buf);
1208 *--beg = '\n';
1209 *--beg = '\r';
1210 do {
1211 *--beg = hextab[chksz & 0xF];
1212 } while (chksz >>= 4);
1213 buf->head -= (end - beg);
1214 b_add(buf, end - beg);
1215}
1216
1217/* Emit a CRLF after the data of the buffer <buf>. The caller is responsible for
1218 * ensuring there is enough room left in the buffer for the string. */
1219static void h1_emit_chunk_crlf(struct buffer *buf)
1220{
1221 *(b_peek(buf, b_data(buf))) = '\r';
1222 *(b_peek(buf, b_data(buf) + 1)) = '\n';
1223 b_add(buf, 2);
1224}
1225
Christopher Faulet129817b2018-09-20 16:14:40 +02001226/*
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001227 * Switch the request to tunnel mode. This function must only be called for
Christopher Fauletf3158e92019-11-15 11:14:23 +01001228 * CONNECT requests. On the client side, if the response is not finished, the
1229 * mux is mark as busy on input.
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001230 */
1231static void h1_set_req_tunnel_mode(struct h1s *h1s)
1232{
1233 h1s->req.flags &= ~(H1_MF_XFER_LEN|H1_MF_CLEN|H1_MF_CHNK);
1234 h1s->req.state = H1_MSG_TUNNEL;
Christopher Fauletf3158e92019-11-15 11:14:23 +01001235 TRACE_STATE("switch H1 request in tunnel mode", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1s->h1c->conn, h1s);
1236
Christopher Faulet0a799aa2020-09-24 09:52:52 +02001237 if (!(h1s->h1c->flags & H1C_F_IS_BACK)) {
Christopher Faulet76014fd2019-12-10 11:47:22 +01001238 h1s->flags &= ~H1S_F_PARSING_DONE;
1239 if (h1s->res.state < H1_MSG_DONE) {
Christopher Faulet089acd52020-09-21 10:57:52 +02001240 h1s->h1c->flags |= H1C_F_WAIT_OPPOSITE;
1241 TRACE_STATE("Disable read on h1c (wait_opposite)", H1_EV_RX_DATA|H1_EV_H1C_BLK, h1s->h1c->conn, h1s);
Christopher Faulet76014fd2019-12-10 11:47:22 +01001242 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02001243 }
Christopher Faulet089acd52020-09-21 10:57:52 +02001244 else if (h1s->h1c->flags & H1C_F_WAIT_OPPOSITE) {
1245 h1s->h1c->flags &= ~H1C_F_WAIT_OPPOSITE;
Christopher Fauletf3158e92019-11-15 11:14:23 +01001246 tasklet_wakeup(h1s->h1c->wait_event.tasklet);
Christopher Faulet089acd52020-09-21 10:57:52 +02001247 TRACE_STATE("Re-enable read on h1c", H1_EV_RX_DATA|H1_EV_H1C_BLK|H1_EV_H1C_WAKE, h1s->h1c->conn, h1s);
Christopher Fauletf3158e92019-11-15 11:14:23 +01001248 }
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001249}
1250
1251/*
1252 * Switch the response to tunnel mode. This function must only be called on
Ilya Shipitsinc02a23f2020-05-06 00:53:22 +05001253 * successful replies to CONNECT requests or on protocol switching. In this
Christopher Fauletf3158e92019-11-15 11:14:23 +01001254 * last case, this function takes care to switch the request to tunnel mode if
1255 * possible. On the server side, if the request is not finished, the mux is mark
1256 * as busy on input.
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001257 */
1258static void h1_set_res_tunnel_mode(struct h1s *h1s)
1259{
Christopher Fauletf3158e92019-11-15 11:14:23 +01001260
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001261 h1s->res.flags &= ~(H1_MF_XFER_LEN|H1_MF_CLEN|H1_MF_CHNK);
1262 h1s->res.state = H1_MSG_TUNNEL;
Christopher Fauletf3158e92019-11-15 11:14:23 +01001263 TRACE_STATE("switch H1 response in tunnel mode", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1s->h1c->conn, h1s);
1264
Christopher Faulet0a799aa2020-09-24 09:52:52 +02001265 if (h1s->h1c->flags & H1C_F_IS_BACK) {
Christopher Faulet76014fd2019-12-10 11:47:22 +01001266 h1s->flags &= ~H1S_F_PARSING_DONE;
1267 /* On protocol switching, switch the request to tunnel mode if it is in
1268 * DONE state. Otherwise we will wait the end of the request to switch
1269 * it in tunnel mode.
1270 */
1271 if (h1s->req.state < H1_MSG_DONE) {
Christopher Faulet089acd52020-09-21 10:57:52 +02001272 h1s->h1c->flags |= H1C_F_WAIT_OPPOSITE;
1273 TRACE_STATE("Disable read on h1c (wait_opposite)", H1_EV_RX_DATA|H1_EV_H1C_BLK, h1s->h1c->conn, h1s);
Christopher Faulet76014fd2019-12-10 11:47:22 +01001274 }
1275 else if (h1s->status == 101 && h1s->req.state == H1_MSG_DONE) {
1276 h1s->req.flags &= ~(H1_MF_XFER_LEN|H1_MF_CLEN|H1_MF_CHNK);
1277 h1s->req.state = H1_MSG_TUNNEL;
1278 TRACE_STATE("switch H1 request in tunnel mode", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1s->h1c->conn, h1s);
1279 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02001280 }
Christopher Faulet089acd52020-09-21 10:57:52 +02001281 else if (h1s->h1c->flags & H1C_F_WAIT_OPPOSITE) {
1282 h1s->h1c->flags &= ~H1C_F_WAIT_OPPOSITE;
Christopher Fauletf3158e92019-11-15 11:14:23 +01001283 tasklet_wakeup(h1s->h1c->wait_event.tasklet);
Christopher Faulet089acd52020-09-21 10:57:52 +02001284 TRACE_STATE("Re-enable read on h1c", H1_EV_RX_DATA|H1_EV_H1C_BLK|H1_EV_H1C_WAKE, h1s->h1c->conn, h1s);
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001285 }
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001286}
1287
1288/*
Christopher Faulet129817b2018-09-20 16:14:40 +02001289 * Parse HTTP/1 headers. It returns the number of bytes parsed if > 0, or 0 if
Christopher Fauletf2824e62018-10-01 12:12:37 +02001290 * it couldn't proceed. Parsing errors are reported by setting H1S_F_*_ERROR
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001291 * flag. If relies on the function http_parse_msg_hdrs() to do the parsing.
Christopher Faulet129817b2018-09-20 16:14:40 +02001292 */
Christopher Faulet9768c262018-10-22 09:34:31 +02001293static size_t h1_process_headers(struct h1s *h1s, struct h1m *h1m, struct htx *htx,
Christopher Fauletf2824e62018-10-01 12:12:37 +02001294 struct buffer *buf, size_t *ofs, size_t max)
Christopher Faulet129817b2018-09-20 16:14:40 +02001295{
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001296 union h1_sl h1sl;
Christopher Faulet129817b2018-09-20 16:14:40 +02001297 int ret = 0;
1298
Willy Tarreau022e5e52020-09-10 09:33:15 +02001299 TRACE_ENTER(H1_EV_RX_DATA|H1_EV_RX_HDRS, h1s->h1c->conn, h1s, 0, (size_t[]){max});
Christopher Faulet6b81df72019-10-01 22:08:43 +02001300
Christopher Fauletc4bfa592020-10-06 17:45:34 +02001301 if (h1s->meth == HTTP_METH_CONNECT)
1302 h1m->flags |= H1_MF_METH_CONNECT;
1303 if (h1s->meth == HTTP_METH_HEAD)
1304 h1m->flags |= H1_MF_METH_HEAD;
Christopher Faulet0ef372a2019-04-08 10:57:20 +02001305
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001306 ret = h1_parse_msg_hdrs(h1m, &h1sl, htx, buf, *ofs, max);
1307 if (!ret) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001308 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 +02001309 if (htx->flags & HTX_FL_PARSING_ERROR) {
Christopher Faulet60ef12c2020-09-24 10:05:44 +02001310 h1s->flags |= H1S_F_PARSING_ERROR;
Christopher Faulet60ef12c2020-09-24 10:05:44 +02001311 TRACE_USER("parsing error, reject H1 message", H1_EV_RX_DATA|H1_EV_RX_HDRS|H1_EV_H1S_ERR, h1s->h1c->conn, h1s);
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001312 h1_capture_bad_message(h1s->h1c, h1s, h1m, buf);
1313 }
Christopher Faulet129817b2018-09-20 16:14:40 +02001314 goto end;
1315 }
1316
Christopher Faulet486498c2019-10-11 14:22:00 +02001317 if (h1m->err_pos >= 0) {
1318 /* Maybe we found an error during the parsing while we were
1319 * configured not to block on that, so we have to capture it
1320 * now.
1321 */
1322 TRACE_STATE("Ignored parsing error", H1_EV_RX_DATA|H1_EV_RX_HDRS, h1s->h1c->conn, h1s);
1323 h1_capture_bad_message(h1s->h1c, h1s, h1m, buf);
1324 }
1325
Christopher Faulet129817b2018-09-20 16:14:40 +02001326 if (!(h1m->flags & H1_MF_RESP)) {
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001327 h1s->meth = h1sl.rq.meth;
Christopher Fauletf3158e92019-11-15 11:14:23 +01001328 if (h1m->state == H1_MSG_TUNNEL)
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001329 h1_set_req_tunnel_mode(h1s);
Christopher Faulet129817b2018-09-20 16:14:40 +02001330 }
1331 else {
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001332 h1s->status = h1sl.st.status;
Christopher Fauletf3158e92019-11-15 11:14:23 +01001333 if (h1m->state == H1_MSG_TUNNEL)
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001334 h1_set_res_tunnel_mode(h1s);
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001335 }
Christopher Fauletb992af02019-03-28 15:42:24 +01001336 h1_process_input_conn_mode(h1s, h1m, htx);
Christopher Faulet9768c262018-10-22 09:34:31 +02001337 *ofs += ret;
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001338
Christopher Faulet129817b2018-09-20 16:14:40 +02001339 end:
Willy Tarreau022e5e52020-09-10 09:33:15 +02001340 TRACE_LEAVE(H1_EV_RX_DATA|H1_EV_RX_HDRS, h1s->h1c->conn, h1s, 0, (size_t[]){ret});
Christopher Faulet129817b2018-09-20 16:14:40 +02001341 return ret;
1342}
1343
1344/*
Christopher Fauletf2824e62018-10-01 12:12:37 +02001345 * Parse HTTP/1 body. It returns the number of bytes parsed if > 0, or 0 if it
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001346 * couldn't proceed. Parsing errors are reported by setting H1S_F_*_ERROR flag.
1347 * If relies on the function http_parse_msg_data() to do the parsing.
Christopher Faulet129817b2018-09-20 16:14:40 +02001348 */
Christopher Fauletaf542632019-10-01 21:52:49 +02001349static size_t h1_process_data(struct h1s *h1s, struct h1m *h1m, struct htx **htx,
Christopher Fauletaa75b3d2018-12-05 16:20:40 +01001350 struct buffer *buf, size_t *ofs, size_t max,
Christopher Faulet30db3d72019-05-17 15:35:33 +02001351 struct buffer *htxbuf)
Christopher Faulet129817b2018-09-20 16:14:40 +02001352{
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001353 int ret;
Christopher Faulet30db3d72019-05-17 15:35:33 +02001354
Willy Tarreau022e5e52020-09-10 09:33:15 +02001355 TRACE_ENTER(H1_EV_RX_DATA|H1_EV_RX_BODY, h1s->h1c->conn, h1s, 0, (size_t[]){max});
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001356 ret = h1_parse_msg_data(h1m, htx, buf, *ofs, max, htxbuf);
Christopher Faulet02a02532019-11-15 09:36:28 +01001357 if (!ret) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001358 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 +01001359 if ((*htx)->flags & HTX_FL_PARSING_ERROR) {
Christopher Faulet60ef12c2020-09-24 10:05:44 +02001360 h1s->flags |= H1S_F_PARSING_ERROR;
Christopher Faulet60ef12c2020-09-24 10:05:44 +02001361 TRACE_USER("parsing error, reject H1 message", H1_EV_RX_DATA|H1_EV_RX_BODY|H1_EV_H1S_ERR, h1s->h1c->conn, h1s);
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001362 h1_capture_bad_message(h1s->h1c, h1s, h1m, buf);
Christopher Faulet9768c262018-10-22 09:34:31 +02001363 }
Christopher Faulet02a02532019-11-15 09:36:28 +01001364 goto end;
Christopher Faulet129817b2018-09-20 16:14:40 +02001365 }
1366
Christopher Faulet02a02532019-11-15 09:36:28 +01001367 *ofs += ret;
1368
1369 end:
Willy Tarreau022e5e52020-09-10 09:33:15 +02001370 TRACE_LEAVE(H1_EV_RX_DATA|H1_EV_RX_BODY, h1s->h1c->conn, h1s, 0, (size_t[]){ret});
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001371 return ret;
Christopher Faulet129817b2018-09-20 16:14:40 +02001372}
1373
1374/*
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001375 * Parse HTTP/1 trailers. It returns the number of bytes parsed if > 0, or 0 if
1376 * it couldn't proceed. Parsing errors are reported by setting H1S_F_*_ERROR
1377 * flag and filling h1s->err_pos and h1s->err_state fields. This functions is
1378 * responsible to update the parser state <h1m>.
1379 */
1380static size_t h1_process_trailers(struct h1s *h1s, struct h1m *h1m, struct htx *htx,
1381 struct buffer *buf, size_t *ofs, size_t max)
1382{
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001383 int ret;
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001384
Willy Tarreau022e5e52020-09-10 09:33:15 +02001385 TRACE_ENTER(H1_EV_RX_DATA|H1_EV_RX_TLRS, h1s->h1c->conn, h1s, 0, (size_t[]){max});
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001386 ret = h1_parse_msg_tlrs(h1m, htx, buf, *ofs, max);
Christopher Faulet02a02532019-11-15 09:36:28 +01001387 if (!ret) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001388 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 +01001389 if (htx->flags & HTX_FL_PARSING_ERROR) {
Christopher Faulet60ef12c2020-09-24 10:05:44 +02001390 h1s->flags |= H1S_F_PARSING_ERROR;
Christopher Faulet60ef12c2020-09-24 10:05:44 +02001391 TRACE_USER("parsing error, reject H1 message", H1_EV_RX_DATA|H1_EV_RX_TLRS|H1_EV_H1S_ERR, h1s->h1c->conn, h1s);
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001392 h1_capture_bad_message(h1s->h1c, h1s, h1m, buf);
1393 }
Christopher Faulet02a02532019-11-15 09:36:28 +01001394 goto end;
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001395 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02001396
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001397 *ofs += ret;
Christopher Faulet02a02532019-11-15 09:36:28 +01001398
1399 end:
Willy Tarreau022e5e52020-09-10 09:33:15 +02001400 TRACE_LEAVE(H1_EV_RX_DATA|H1_EV_RX_TLRS, h1s->h1c->conn, h1s, 0, (size_t[]){ret});
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001401 return ret;
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001402}
1403
1404/*
Christopher Faulet76014fd2019-12-10 11:47:22 +01001405 * Add the EOM in the HTX message. It returns 1 on success or 0 if it couldn't
Christopher Fauleta583af62020-09-24 15:35:37 +02001406 * proceed. This functions is responsible to update the parser state <h1m>.
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001407 */
Christopher Faulet76014fd2019-12-10 11:47:22 +01001408static size_t h1_process_eom(struct h1s *h1s, struct h1m *h1m, struct htx *htx,
1409 struct buffer *buf, size_t *ofs, size_t max)
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001410{
Christopher Faulet76014fd2019-12-10 11:47:22 +01001411 int ret;
1412
Willy Tarreau022e5e52020-09-10 09:33:15 +02001413 TRACE_ENTER(H1_EV_RX_DATA|H1_EV_RX_EOI, h1s->h1c->conn, h1s, 0, (size_t[]){max});
Christopher Faulet76014fd2019-12-10 11:47:22 +01001414 ret = h1_parse_msg_eom(h1m, htx, max);
1415 if (!ret) {
1416 TRACE_DEVEL("leaving on missing data or error", H1_EV_RX_DATA|H1_EV_RX_EOI, h1s->h1c->conn, h1s);
1417 if (htx->flags & HTX_FL_PARSING_ERROR) {
Christopher Faulet60ef12c2020-09-24 10:05:44 +02001418 h1s->flags |= H1S_F_PARSING_ERROR;
Christopher Faulet60ef12c2020-09-24 10:05:44 +02001419 TRACE_USER("parsing error, reject H1 message", H1_EV_RX_DATA|H1_EV_RX_EOI|H1_EV_H1S_ERR, h1s->h1c->conn, h1s);
Christopher Faulet76014fd2019-12-10 11:47:22 +01001420 h1_capture_bad_message(h1s->h1c, h1s, h1m, buf);
1421 }
1422 goto end;
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001423 }
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001424
Christopher Faulet76014fd2019-12-10 11:47:22 +01001425 h1s->flags |= H1S_F_PARSING_DONE;
Christopher Faulet76014fd2019-12-10 11:47:22 +01001426 end:
Willy Tarreau022e5e52020-09-10 09:33:15 +02001427 TRACE_LEAVE(H1_EV_RX_DATA|H1_EV_RX_EOI, h1s->h1c->conn, h1s, 0, (size_t[]){ret});
Christopher Faulet76014fd2019-12-10 11:47:22 +01001428 return ret;
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001429}
1430
1431/*
Christopher Faulet129817b2018-09-20 16:14:40 +02001432 * Process incoming data. It parses data and transfer them from h1c->ibuf into
Christopher Faulet539e0292018-11-19 10:40:09 +01001433 * <buf>. It returns the number of bytes parsed and transferred if > 0, or 0 if
1434 * it couldn't proceed.
Christopher Faulet129817b2018-09-20 16:14:40 +02001435 */
Christopher Faulet30db3d72019-05-17 15:35:33 +02001436static size_t h1_process_input(struct h1c *h1c, struct buffer *buf, size_t count)
Christopher Faulet51dbc942018-09-13 09:05:15 +02001437{
Christopher Faulet539e0292018-11-19 10:40:09 +01001438 struct h1s *h1s = h1c->h1s;
Christopher Faulet129817b2018-09-20 16:14:40 +02001439 struct h1m *h1m;
Christopher Faulet9768c262018-10-22 09:34:31 +02001440 struct htx *htx;
Christopher Fauletc4bfa592020-10-06 17:45:34 +02001441 size_t data;
1442 size_t ret = 0;
Christopher Faulet129817b2018-09-20 16:14:40 +02001443 size_t total = 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001444
Christopher Faulet539e0292018-11-19 10:40:09 +01001445 htx = htx_from_buf(buf);
Christopher Faulet6b81df72019-10-01 22:08:43 +02001446 TRACE_ENTER(H1_EV_RX_DATA, h1c->conn, h1s, htx, (size_t[]){count});
Willy Tarreau3a6190f2018-12-16 08:29:56 +01001447
Christopher Faulet60ef12c2020-09-24 10:05:44 +02001448 h1m = (!(h1c->flags & H1C_F_IS_BACK) ? &h1s->req : &h1s->res);
Christopher Faulet74027762019-02-26 14:45:05 +01001449 data = htx->data;
Christopher Fauletc4bfa592020-10-06 17:45:34 +02001450
Christopher Faulet60ef12c2020-09-24 10:05:44 +02001451 if (h1s->flags & H1S_F_PARSING_ERROR)
Christopher Faulet0e54d542019-07-04 21:22:34 +02001452 goto end;
1453
Christopher Fauletd44ad5b2018-11-19 21:52:12 +01001454 do {
Christopher Faulet30db3d72019-05-17 15:35:33 +02001455 size_t used = htx_used_space(htx);
1456
Christopher Faulet129817b2018-09-20 16:14:40 +02001457 if (h1m->state <= H1_MSG_LAST_LF) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001458 TRACE_PROTO("parsing message headers", H1_EV_RX_DATA|H1_EV_RX_HDRS, h1c->conn, h1s);
Christopher Faulet539e0292018-11-19 10:40:09 +01001459 ret = h1_process_headers(h1s, h1m, htx, &h1c->ibuf, &total, count);
Christopher Faulet129817b2018-09-20 16:14:40 +02001460 if (!ret)
1461 break;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001462
1463 TRACE_USER((!(h1m->flags & H1_MF_RESP) ? "rcvd H1 request headers" : "rcvd H1 response headers"),
1464 H1_EV_RX_DATA|H1_EV_RX_HDRS, h1c->conn, h1s, htx, (size_t[]){ret});
1465
Christopher Fauletb75b5ea2019-05-17 08:37:28 +02001466 if ((h1m->flags & H1_MF_RESP) &&
1467 h1s->status < 200 && (h1s->status == 100 || h1s->status >= 102)) {
1468 h1m_init_res(&h1s->res);
1469 h1m->flags |= (H1_MF_NO_PHDR|H1_MF_CLEAN_CONN_HDR);
Christopher Faulet6b81df72019-10-01 22:08:43 +02001470 TRACE_STATE("1xx response rcvd", H1_EV_RX_DATA|H1_EV_RX_HDRS, h1c->conn, h1s);
Christopher Fauletb75b5ea2019-05-17 08:37:28 +02001471 }
Christopher Faulet129817b2018-09-20 16:14:40 +02001472 }
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001473 else if (h1m->state < H1_MSG_TRAILERS) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001474 TRACE_PROTO("parsing message payload", H1_EV_RX_DATA|H1_EV_RX_BODY, h1c->conn, h1s);
Christopher Fauletaf542632019-10-01 21:52:49 +02001475 ret = h1_process_data(h1s, h1m, &htx, &h1c->ibuf, &total, count, buf);
Christopher Faulet76014fd2019-12-10 11:47:22 +01001476 if (!ret && h1m->state != H1_MSG_DONE)
Christopher Faulet129817b2018-09-20 16:14:40 +02001477 break;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001478
1479 TRACE_PROTO((!(h1m->flags & H1_MF_RESP) ? "rcvd H1 request payload data" : "rcvd H1 response payload data"),
1480 H1_EV_RX_DATA|H1_EV_RX_BODY, h1c->conn, h1s, htx, (size_t[]){ret});
Christopher Faulet129817b2018-09-20 16:14:40 +02001481 }
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001482 else if (h1m->state == H1_MSG_TRAILERS) {
Christopher Faulet76014fd2019-12-10 11:47:22 +01001483 TRACE_PROTO("parsing message trailers", H1_EV_RX_DATA|H1_EV_RX_TLRS, h1c->conn, h1s);
1484 ret = h1_process_trailers(h1s, h1m, htx, &h1c->ibuf, &total, count);
1485 if (!ret && h1m->state != H1_MSG_DONE)
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001486 break;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001487
Christopher Faulet76014fd2019-12-10 11:47:22 +01001488 TRACE_PROTO((!(h1m->flags & H1_MF_RESP) ? "rcvd H1 request trailers" : "rcvd H1 response trailers"),
1489 H1_EV_RX_DATA|H1_EV_RX_TLRS, h1c->conn, h1s, htx, (size_t[]){ret});
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001490 }
Christopher Fauletcb55f482018-12-10 11:56:47 +01001491 else if (h1m->state == H1_MSG_DONE) {
Christopher Faulet76014fd2019-12-10 11:47:22 +01001492 if (!(h1s->flags & H1S_F_PARSING_DONE)) {
1493 if (!h1_process_eom(h1s, h1m, htx, &h1c->ibuf, &total, count))
1494 break;
1495
1496 TRACE_USER((!(h1m->flags & H1_MF_RESP) ? "H1 request fully rcvd" : "H1 response fully rcvd"),
1497 H1_EV_RX_DATA|H1_EV_RX_EOI, h1c->conn, h1s, htx);
1498 }
1499
Christopher Fauletf3158e92019-11-15 11:14:23 +01001500 if (!(h1m->flags & H1_MF_RESP) && h1s->status == 101)
1501 h1_set_req_tunnel_mode(h1s);
1502 else if (h1s->req.state < H1_MSG_DONE || h1s->res.state < H1_MSG_DONE) {
Christopher Faulet089acd52020-09-21 10:57:52 +02001503 h1c->flags |= H1C_F_WAIT_OPPOSITE;
1504 TRACE_STATE("Disable read on h1c (wait_opposite)", H1_EV_RX_DATA|H1_EV_H1C_BLK, h1c->conn, h1s);
Christopher Faulet23021ad2020-07-10 10:01:26 +02001505 break;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001506 }
Christopher Faulet23021ad2020-07-10 10:01:26 +02001507 else
1508 break;
Christopher Fauletcb55f482018-12-10 11:56:47 +01001509 }
Christopher Fauletf2824e62018-10-01 12:12:37 +02001510 else if (h1m->state == H1_MSG_TUNNEL) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001511 TRACE_PROTO("parsing tunneled data", H1_EV_RX_DATA, h1c->conn, h1s);
Christopher Fauletaf542632019-10-01 21:52:49 +02001512 ret = h1_process_data(h1s, h1m, &htx, &h1c->ibuf, &total, count, buf);
Christopher Faulet9768c262018-10-22 09:34:31 +02001513 if (!ret)
1514 break;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001515
1516 TRACE_PROTO((!(h1m->flags & H1_MF_RESP) ? "rcvd H1 request tunneled data" : "rcvd H1 response tunneled data"),
1517 H1_EV_RX_DATA|H1_EV_RX_EOI, h1c->conn, h1s, htx, (size_t[]){ret});
Christopher Fauletf2824e62018-10-01 12:12:37 +02001518 }
Christopher Faulet129817b2018-09-20 16:14:40 +02001519 else {
Christopher Faulet60ef12c2020-09-24 10:05:44 +02001520 h1s->flags |= H1S_F_PARSING_ERROR;
Christopher Faulet129817b2018-09-20 16:14:40 +02001521 break;
1522 }
1523
Christopher Faulet30db3d72019-05-17 15:35:33 +02001524 count -= htx_used_space(htx) - used;
Christopher Faulet60ef12c2020-09-24 10:05:44 +02001525 } while (!(h1s->flags & H1S_F_PARSING_ERROR));
Christopher Faulet129817b2018-09-20 16:14:40 +02001526
Christopher Faulet60ef12c2020-09-24 10:05:44 +02001527 if (h1s->flags & H1S_F_PARSING_ERROR) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001528 TRACE_PROTO("parsing error", H1_EV_RX_DATA, h1c->conn, h1s);
Christopher Fauletc4bfa592020-10-06 17:45:34 +02001529 goto err;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001530 }
Christopher Faulet129817b2018-09-20 16:14:40 +02001531
Christopher Faulet539e0292018-11-19 10:40:09 +01001532 b_del(&h1c->ibuf, total);
1533
Christopher Faulet27ba2dc2018-12-05 11:53:24 +01001534 htx_to_buf(htx, buf);
Christopher Fauletc4bfa592020-10-06 17:45:34 +02001535 TRACE_DEVEL("incoming data parsed", H1_EV_RX_DATA, h1c->conn, h1s, htx, (size_t[]){ret});
1536
Christopher Faulet30db3d72019-05-17 15:35:33 +02001537 ret = htx->data - data;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001538 if ((h1c->flags & H1C_F_IN_FULL) && buf_room_for_htx_data(&h1c->ibuf)) {
Christopher Faulet539e0292018-11-19 10:40:09 +01001539 h1c->flags &= ~H1C_F_IN_FULL;
Christopher Fauletc4bfa592020-10-06 17:45:34 +02001540 TRACE_STATE("h1c ibuf not full anymore", H1_EV_RX_DATA|H1_EV_H1C_BLK|H1_EV_H1C_WAKE, h1c->conn, h1s);
Willy Tarreau2c1f37d2020-03-04 17:50:02 +01001541 h1c->conn->xprt->subscribe(h1c->conn, h1c->conn->xprt_ctx, SUB_RETRY_RECV, &h1c->wait_event);
Christopher Faulet47365272018-10-31 17:40:50 +01001542 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02001543
Christopher Fauletc4bfa592020-10-06 17:45:34 +02001544 if (!b_data(&h1c->ibuf))
1545 h1_release_buf(h1c, &h1c->ibuf);
1546
1547 if (!h1s->cs) {
1548 if (h1m->state <= H1_MSG_LAST_LF) {
1549 TRACE_STATE("Incomplete message, subscribing", H1_EV_RX_DATA|H1_EV_H1C_BLK|H1_EV_H1C_WAKE, h1c->conn, h1s);
1550 h1c->conn->xprt->subscribe(h1c->conn, h1c->conn->xprt_ctx, SUB_RETRY_RECV, &h1c->wait_event);
1551 goto end;
1552 }
1553
1554 if (!h1s_new_cs(h1s, buf)) {
Christopher Faulet3ced1d12020-11-27 16:44:01 +01001555 h1c->flags |= H1C_F_ST_ERROR;
Christopher Fauletc4bfa592020-10-06 17:45:34 +02001556 goto err;
1557 }
1558 }
1559
1560 /* Here h1s->cs is always defined */
Christopher Fauleta583af62020-09-24 15:35:37 +02001561 if (!(h1m->flags & H1_MF_CHNK) &&
1562 ((h1m->state == H1_MSG_DATA && h1m->curr_len) || (h1m->state == H1_MSG_TUNNEL))) {
1563 TRACE_STATE("notify the mux can use splicing", H1_EV_RX_DATA|H1_EV_RX_BODY, h1c->conn, h1s);
1564 h1s->cs->flags |= CS_FL_MAY_SPLICE;
1565 }
1566 else {
1567 TRACE_STATE("notify the mux can't use splicing anymore", H1_EV_RX_DATA|H1_EV_RX_BODY, h1c->conn, h1s);
1568 h1s->cs->flags &= ~CS_FL_MAY_SPLICE;
1569 }
1570
1571 if (h1s->flags & H1S_F_PARSING_DONE)
1572 h1s->cs->flags |= CS_FL_EOI;
1573
Christopher Faulet6716cc22019-12-20 17:33:24 +01001574 if (h1s_data_pending(h1s) && !htx_is_empty(htx))
Christopher Fauletcf56b992018-12-11 16:12:31 +01001575 h1s->cs->flags |= CS_FL_RCV_MORE | CS_FL_WANT_ROOM;
Christopher Fauletc4bfa592020-10-06 17:45:34 +02001576 else {
1577 h1s->cs->flags &= ~(CS_FL_RCV_MORE | CS_FL_WANT_ROOM);
1578 if (h1s->flags & H1S_F_REOS) {
1579 h1s->cs->flags |= CS_FL_EOS;
1580 if (h1m->state == H1_MSG_TUNNEL)
1581 h1s->cs->flags |= CS_FL_EOI;
1582 else if (h1m->state > H1_MSG_LAST_LF && h1m->state < H1_MSG_DONE)
1583 h1s->cs->flags |= CS_FL_ERROR;
1584 }
Christopher Faulet539e0292018-11-19 10:40:09 +01001585 }
Christopher Fauletf6ce9d62018-12-10 15:30:06 +01001586
Christopher Fauletc4bfa592020-10-06 17:45:34 +02001587 end:
Christopher Faulet6b81df72019-10-01 22:08:43 +02001588 TRACE_LEAVE(H1_EV_RX_DATA, h1c->conn, h1s, htx, (size_t[]){ret});
Christopher Faulet30db3d72019-05-17 15:35:33 +02001589 return ret;
Christopher Faulet47365272018-10-31 17:40:50 +01001590
Christopher Fauletc4bfa592020-10-06 17:45:34 +02001591 err:
Christopher Faulet47365272018-10-31 17:40:50 +01001592 b_reset(&h1c->ibuf);
Christopher Faulet27ba2dc2018-12-05 11:53:24 +01001593 htx_to_buf(htx, buf);
Christopher Fauletc4bfa592020-10-06 17:45:34 +02001594 if (h1s->cs)
1595 h1s->cs->flags |= CS_FL_EOI;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001596 TRACE_DEVEL("leaving on error", H1_EV_RX_DATA|H1_EV_STRM_ERR, h1c->conn, h1s);
Christopher Faulet9768c262018-10-22 09:34:31 +02001597 return 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001598}
1599
Christopher Faulet129817b2018-09-20 16:14:40 +02001600/*
1601 * Process outgoing data. It parses data and transfer them from the channel buffer into
1602 * h1c->obuf. It returns the number of bytes parsed and transferred if > 0, or
1603 * 0 if it couldn't proceed.
1604 */
Christopher Faulet51dbc942018-09-13 09:05:15 +02001605static size_t h1_process_output(struct h1c *h1c, struct buffer *buf, size_t count)
1606{
Christopher Faulet129817b2018-09-20 16:14:40 +02001607 struct h1s *h1s = h1c->h1s;
1608 struct h1m *h1m;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001609 struct htx *chn_htx = NULL;
Christopher Faulet9768c262018-10-22 09:34:31 +02001610 struct htx_blk *blk;
Christopher Fauletc2518a52019-06-25 21:41:02 +02001611 struct buffer tmp;
Christopher Faulet129817b2018-09-20 16:14:40 +02001612 size_t total = 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001613
Christopher Faulet47365272018-10-31 17:40:50 +01001614 if (!count)
1615 goto end;
Willy Tarreau37dd54d2018-12-15 14:48:31 +01001616
Christopher Faulet94b2c762019-05-24 15:28:57 +02001617 chn_htx = htxbuf(buf);
Christopher Faulet6b81df72019-10-01 22:08:43 +02001618 TRACE_ENTER(H1_EV_TX_DATA, h1c->conn, h1s, chn_htx, (size_t[]){count});
1619
Willy Tarreau37dd54d2018-12-15 14:48:31 +01001620 if (htx_is_empty(chn_htx))
1621 goto end;
Christopher Faulet9768c262018-10-22 09:34:31 +02001622
Christopher Fauletc4bfa592020-10-06 17:45:34 +02001623 if (h1s->flags & H1S_F_PROCESSING_ERROR)
1624 goto end;
1625
Christopher Faulet51dbc942018-09-13 09:05:15 +02001626 if (!h1_get_buf(h1c, &h1c->obuf)) {
1627 h1c->flags |= H1C_F_OUT_ALLOC;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001628 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 +02001629 goto end;
1630 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02001631
Christopher Faulet60ef12c2020-09-24 10:05:44 +02001632 h1m = (!(h1c->flags & H1C_F_IS_BACK) ? &h1s->res : &h1s->req);
Christopher Faulet9768c262018-10-22 09:34:31 +02001633
Willy Tarreau37dd54d2018-12-15 14:48:31 +01001634 /* the htx is non-empty thus has at least one block */
Willy Tarreau3815b222018-12-11 19:50:43 +01001635 blk = htx_get_head_blk(chn_htx);
Christopher Faulet9768c262018-10-22 09:34:31 +02001636
Willy Tarreau3815b222018-12-11 19:50:43 +01001637 /* Perform some optimizations to reduce the number of buffer copies.
1638 * First, if the mux's buffer is empty and the htx area contains
1639 * exactly one data block of the same size as the requested count,
1640 * then it's possible to simply swap the caller's buffer with the
1641 * mux's output buffer and adjust offsets and length to match the
1642 * entire DATA HTX block in the middle. In this case we perform a
1643 * true zero-copy operation from end-to-end. This is the situation
1644 * that happens all the time with large files. Second, if this is not
1645 * possible, but the mux's output buffer is empty, we still have an
1646 * opportunity to avoid the copy to the intermediary buffer, by making
1647 * the intermediary buffer's area point to the output buffer's area.
1648 * In this case we want to skip the HTX header to make sure that copies
1649 * remain aligned and that this operation remains possible all the
1650 * time. This goes for headers, data blocks and any data extracted from
1651 * the HTX blocks.
Willy Tarreauc5efa332018-12-05 11:19:27 +01001652 */
1653 if (!b_data(&h1c->obuf)) {
Christopher Faulet192c6a22019-06-11 16:32:24 +02001654 if (htx_nbblks(chn_htx) == 1 &&
Willy Tarreau37dd54d2018-12-15 14:48:31 +01001655 htx_get_blk_type(blk) == HTX_BLK_DATA &&
Willy Tarreau3815b222018-12-11 19:50:43 +01001656 htx_get_blk_value(chn_htx, blk).len == count) {
1657 void *old_area = h1c->obuf.area;
1658
Christopher Faulet6b81df72019-10-01 22:08:43 +02001659 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 +01001660 h1c->obuf.area = buf->area;
Christopher Fauletc2518a52019-06-25 21:41:02 +02001661 h1c->obuf.head = sizeof(struct htx) + blk->addr;
Willy Tarreau3815b222018-12-11 19:50:43 +01001662 h1c->obuf.data = count;
1663
1664 buf->area = old_area;
1665 buf->data = buf->head = 0;
Christopher Fauletadb22202018-12-12 10:32:09 +01001666
Christopher Faulet6b81df72019-10-01 22:08:43 +02001667 chn_htx = (struct htx *)buf->area;
1668 htx_reset(chn_htx);
1669
Christopher Fauletadb22202018-12-12 10:32:09 +01001670 /* The message is chunked. We need to emit the chunk
1671 * size. We have at least the size of the struct htx to
1672 * write the chunk envelope. It should be enough.
1673 */
1674 if (h1m->flags & H1_MF_CHNK) {
1675 h1_emit_chunk_size(&h1c->obuf, count);
1676 h1_emit_chunk_crlf(&h1c->obuf);
1677 }
1678
Willy Tarreau3815b222018-12-11 19:50:43 +01001679 total += count;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001680 if (h1m->state == H1_MSG_DATA)
1681 TRACE_PROTO((!(h1m->flags & H1_MF_RESP) ? "H1 request payload data xferred" : "H1 response payload data xferred"),
Willy Tarreau022e5e52020-09-10 09:33:15 +02001682 H1_EV_TX_DATA|H1_EV_TX_BODY, h1c->conn, h1s, 0, (size_t[]){count});
Christopher Faulet6b81df72019-10-01 22:08:43 +02001683 else
1684 TRACE_PROTO((!(h1m->flags & H1_MF_RESP) ? "H1 request tunneled data xferred" : "H1 response tunneled data xferred"),
Willy Tarreau022e5e52020-09-10 09:33:15 +02001685 H1_EV_TX_DATA|H1_EV_TX_BODY, h1c->conn, h1s, 0, (size_t[]){count});
Willy Tarreau3815b222018-12-11 19:50:43 +01001686 goto out;
1687 }
Christopher Fauletc2518a52019-06-25 21:41:02 +02001688 tmp.area = h1c->obuf.area + h1c->obuf.head;
Willy Tarreauc5efa332018-12-05 11:19:27 +01001689 }
Christopher Fauletc2518a52019-06-25 21:41:02 +02001690 else
1691 tmp.area = trash.area;
Christopher Faulet9768c262018-10-22 09:34:31 +02001692
Christopher Fauletc2518a52019-06-25 21:41:02 +02001693 tmp.data = 0;
1694 tmp.size = b_room(&h1c->obuf);
Christopher Faulet60ef12c2020-09-24 10:05:44 +02001695 while (count && !(h1s->flags & H1S_F_PROCESSING_ERROR) && blk) {
Christopher Faulet570d1612018-11-26 11:13:57 +01001696 struct htx_sl *sl;
Christopher Faulet9768c262018-10-22 09:34:31 +02001697 struct ist n, v;
Christopher Fauletb2e84162018-12-06 11:39:49 +01001698 enum htx_blk_type type = htx_get_blk_type(blk);
Christopher Faulet9768c262018-10-22 09:34:31 +02001699 uint32_t sz = htx_get_blksz(blk);
Christopher Fauletd9233f02019-10-14 14:01:24 +02001700 uint32_t vlen, chklen;
Christopher Faulet9768c262018-10-22 09:34:31 +02001701
Christopher Fauletb2e84162018-12-06 11:39:49 +01001702 vlen = sz;
Christopher Fauletd9233f02019-10-14 14:01:24 +02001703 if (type != HTX_BLK_DATA && vlen > count)
1704 goto full;
Christopher Faulet9768c262018-10-22 09:34:31 +02001705
Christopher Faulet94b2c762019-05-24 15:28:57 +02001706 if (type == HTX_BLK_UNUSED)
1707 goto nextblk;
Christopher Faulet9768c262018-10-22 09:34:31 +02001708
Christopher Faulet94b2c762019-05-24 15:28:57 +02001709 switch (h1m->state) {
1710 case H1_MSG_RQBEFORE:
1711 if (type != HTX_BLK_REQ_SL)
1712 goto error;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001713 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 +02001714 sl = htx_get_blk_ptr(chn_htx, blk);
Christopher Faulet570d1612018-11-26 11:13:57 +01001715 h1s->meth = sl->info.req.meth;
Christopher Faulet9768c262018-10-22 09:34:31 +02001716 h1_parse_req_vsn(h1m, sl);
Christopher Faulet53a899b2019-10-08 16:38:42 +02001717 if (!h1_format_htx_reqline(sl, &tmp))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001718 goto full;
Christopher Faulet9768c262018-10-22 09:34:31 +02001719 h1m->flags |= H1_MF_XFER_LEN;
Christopher Faulet1f890dd2019-02-18 10:33:16 +01001720 if (sl->flags & HTX_SL_F_BODYLESS)
1721 h1m->flags |= H1_MF_CLEN;
Christopher Faulet9768c262018-10-22 09:34:31 +02001722 h1m->state = H1_MSG_HDR_FIRST;
Christopher Faulet089acd52020-09-21 10:57:52 +02001723 if (h1c->flags & H1C_F_WAIT_OPPOSITE) {
1724 h1c->flags &= ~H1C_F_WAIT_OPPOSITE;
1725 h1c->conn->xprt->subscribe(h1c->conn, h1c->conn->xprt_ctx, SUB_RETRY_RECV, &h1c->wait_event);
1726 TRACE_STATE("Re-enable read on h1c", H1_EV_TX_DATA|H1_EV_H1C_BLK|H1_EV_H1C_WAKE, h1c->conn, h1s);
1727 }
Christopher Faulet129817b2018-09-20 16:14:40 +02001728 break;
Christopher Faulet129817b2018-09-20 16:14:40 +02001729
Christopher Faulet94b2c762019-05-24 15:28:57 +02001730 case H1_MSG_RPBEFORE:
1731 if (type != HTX_BLK_RES_SL)
1732 goto error;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001733 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 +02001734 sl = htx_get_blk_ptr(chn_htx, blk);
Christopher Faulet570d1612018-11-26 11:13:57 +01001735 h1s->status = sl->info.res.status;
Christopher Faulet9768c262018-10-22 09:34:31 +02001736 h1_parse_res_vsn(h1m, sl);
Christopher Faulet53a899b2019-10-08 16:38:42 +02001737 if (!h1_format_htx_stline(sl, &tmp))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001738 goto full;
Christopher Faulet03599112018-11-27 11:21:21 +01001739 if (sl->flags & HTX_SL_F_XFER_LEN)
Christopher Faulet9768c262018-10-22 09:34:31 +02001740 h1m->flags |= H1_MF_XFER_LEN;
Christopher Fauletd1ebb1e2018-11-28 16:32:50 +01001741 if (sl->info.res.status < 200 &&
1742 (sl->info.res.status == 100 || sl->info.res.status >= 102))
Christopher Fauletada34b62019-05-24 16:36:43 +02001743 h1s->flags |= H1S_F_HAVE_O_CONN;
Christopher Faulet9768c262018-10-22 09:34:31 +02001744 h1m->state = H1_MSG_HDR_FIRST;
1745 break;
1746
Christopher Faulet94b2c762019-05-24 15:28:57 +02001747 case H1_MSG_HDR_FIRST:
1748 case H1_MSG_HDR_NAME:
1749 case H1_MSG_HDR_L2_LWS:
1750 if (type == HTX_BLK_EOH)
1751 goto last_lf;
1752 if (type != HTX_BLK_HDR)
1753 goto error;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001754
Christopher Faulet9768c262018-10-22 09:34:31 +02001755 h1m->state = H1_MSG_HDR_NAME;
1756 n = htx_get_blk_name(chn_htx, blk);
1757 v = htx_get_blk_value(chn_htx, blk);
1758
Christopher Faulet86d144c2019-08-14 16:32:25 +02001759 /* Skip all pseudo-headers */
1760 if (*(n.ptr) == ':')
1761 goto skip_hdr;
1762
Christopher Fauletb045bb22020-02-28 10:42:20 +01001763 if (isteq(n, ist("transfer-encoding")))
Christopher Faulet9768c262018-10-22 09:34:31 +02001764 h1_parse_xfer_enc_header(h1m, v);
Christopher Fauletb045bb22020-02-28 10:42:20 +01001765 else if (isteq(n, ist("content-length"))) {
Christopher Faulet5220ef22019-03-27 15:44:56 +01001766 /* Only skip C-L header with invalid value. */
1767 if (h1_parse_cont_len_header(h1m, &v) < 0)
Willy Tarreau27cd2232019-01-03 21:52:42 +01001768 goto skip_hdr;
1769 }
Christopher Fauletb045bb22020-02-28 10:42:20 +01001770 else if (isteq(n, ist("connection"))) {
Christopher Fauletb992af02019-03-28 15:42:24 +01001771 h1_parse_connection_header(h1m, &v);
Christopher Faulet9768c262018-10-22 09:34:31 +02001772 if (!v.len)
1773 goto skip_hdr;
1774 }
1775
Christopher Faulet67d58092019-10-02 10:51:38 +02001776 /* Skip header if same name is used to add the server name */
1777 if (!(h1m->flags & H1_MF_RESP) && h1c->px->server_id_hdr_name &&
1778 isteqi(n, ist2(h1c->px->server_id_hdr_name, h1c->px->server_id_hdr_len)))
1779 goto skip_hdr;
1780
Christopher Faulet98fbe952019-07-22 16:18:24 +02001781 /* Try to adjust the case of the header name */
1782 if (h1c->px->options2 & (PR_O2_H1_ADJ_BUGCLI|PR_O2_H1_ADJ_BUGSRV))
1783 h1_adjust_case_outgoing_hdr(h1s, h1m, &n);
Christopher Faulet53a899b2019-10-08 16:38:42 +02001784 if (!h1_format_htx_hdr(n, v, &tmp))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001785 goto full;
Christopher Faulet9768c262018-10-22 09:34:31 +02001786 skip_hdr:
1787 h1m->state = H1_MSG_HDR_L2_LWS;
1788 break;
1789
Christopher Faulet94b2c762019-05-24 15:28:57 +02001790 case H1_MSG_LAST_LF:
1791 if (type != HTX_BLK_EOH)
1792 goto error;
1793 last_lf:
Christopher Fauletada34b62019-05-24 16:36:43 +02001794 h1m->state = H1_MSG_LAST_LF;
1795 if (!(h1s->flags & H1S_F_HAVE_O_CONN)) {
Christopher Faulet04f89192019-10-16 09:41:07 +02001796 /* If the reply comes from haproxy while the request is
1797 * not finished, we force the connection close. */
1798 if ((chn_htx->flags & HTX_FL_PROXY_RESP) && h1s->req.state != H1_MSG_DONE) {
1799 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
1800 TRACE_STATE("force close mode (resp)", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1s->h1c->conn, h1s);
1801 }
1802
1803 /* the conn_mode must be processed. So do it */
Christopher Fauleta110ecb2019-06-17 14:07:46 +02001804 n = ist("connection");
Christopher Fauletd1ebb1e2018-11-28 16:32:50 +01001805 v = ist("");
Christopher Fauletb992af02019-03-28 15:42:24 +01001806 h1_process_output_conn_mode(h1s, h1m, &v);
Christopher Fauletd1ebb1e2018-11-28 16:32:50 +01001807 if (v.len) {
Christopher Faulet98fbe952019-07-22 16:18:24 +02001808 /* Try to adjust the case of the header name */
1809 if (h1c->px->options2 & (PR_O2_H1_ADJ_BUGCLI|PR_O2_H1_ADJ_BUGSRV))
1810 h1_adjust_case_outgoing_hdr(h1s, h1m, &n);
Christopher Faulet53a899b2019-10-08 16:38:42 +02001811 if (!h1_format_htx_hdr(n, v, &tmp))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001812 goto full;
Christopher Fauletd1ebb1e2018-11-28 16:32:50 +01001813 }
Christopher Fauletada34b62019-05-24 16:36:43 +02001814 h1s->flags |= H1S_F_HAVE_O_CONN;
Christopher Fauletd1ebb1e2018-11-28 16:32:50 +01001815 }
Willy Tarreau4710d202019-01-03 17:39:54 +01001816
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001817 if ((h1s->meth != HTTP_METH_CONNECT &&
1818 (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 +01001819 (H1_MF_VER_11|H1_MF_XFER_LEN)) ||
1820 (h1s->status >= 200 && h1s->status != 204 && h1s->status != 304 &&
1821 h1s->meth != HTTP_METH_HEAD && !(h1s->meth == HTTP_METH_CONNECT && h1s->status == 200) &&
1822 (h1m->flags & (H1_MF_VER_11|H1_MF_RESP|H1_MF_CLEN|H1_MF_CHNK|H1_MF_XFER_LEN)) ==
1823 (H1_MF_VER_11|H1_MF_RESP|H1_MF_XFER_LEN))) {
Willy Tarreau4710d202019-01-03 17:39:54 +01001824 /* chunking needed but header not seen */
Christopher Faulet7a991a92019-10-04 10:23:51 +02001825 n = ist("transfer-encoding");
1826 v = ist("chunked");
1827 if (h1c->px->options2 & (PR_O2_H1_ADJ_BUGCLI|PR_O2_H1_ADJ_BUGSRV))
1828 h1_adjust_case_outgoing_hdr(h1s, h1m, &n);
Christopher Faulet53a899b2019-10-08 16:38:42 +02001829 if (!h1_format_htx_hdr(n, v, &tmp))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001830 goto full;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001831 TRACE_STATE("add \"Transfer-Encoding: chunked\"", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1c->conn, h1s);
Willy Tarreau4710d202019-01-03 17:39:54 +01001832 h1m->flags |= H1_MF_CHNK;
1833 }
1834
Christopher Faulet72ba6cd2019-09-24 16:20:05 +02001835 /* Now add the server name to a header (if requested) */
1836 if (!(h1s->flags & H1S_F_HAVE_SRV_NAME) &&
1837 !(h1m->flags & H1_MF_RESP) && h1c->px->server_id_hdr_name) {
1838 struct server *srv = objt_server(h1c->conn->target);
1839
1840 if (srv) {
1841 n = ist2(h1c->px->server_id_hdr_name, h1c->px->server_id_hdr_len);
1842 v = ist(srv->id);
Christopher Faulet5cef2a62019-10-02 11:06:13 +02001843
1844 /* Try to adjust the case of the header name */
1845 if (h1c->px->options2 & (PR_O2_H1_ADJ_BUGCLI|PR_O2_H1_ADJ_BUGSRV))
1846 h1_adjust_case_outgoing_hdr(h1s, h1m, &n);
Christopher Faulet53a899b2019-10-08 16:38:42 +02001847 if (!h1_format_htx_hdr(n, v, &tmp))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001848 goto full;
Christopher Faulet72ba6cd2019-09-24 16:20:05 +02001849 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02001850 TRACE_STATE("add server name header", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1c->conn, h1s);
Christopher Faulet72ba6cd2019-09-24 16:20:05 +02001851 h1s->flags |= H1S_F_HAVE_SRV_NAME;
1852 }
1853
Christopher Fauletc2518a52019-06-25 21:41:02 +02001854 if (!chunk_memcat(&tmp, "\r\n", 2))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001855 goto full;
Christopher Faulet9768c262018-10-22 09:34:31 +02001856
Christopher Faulet6b81df72019-10-01 22:08:43 +02001857 TRACE_PROTO((!(h1m->flags & H1_MF_RESP) ? "H1 request headers xferred" : "H1 response headers xferred"),
1858 H1_EV_TX_DATA|H1_EV_TX_HDRS, h1c->conn, h1s);
1859
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001860 if (!(h1m->flags & H1_MF_RESP) && h1s->meth == HTTP_METH_CONNECT) {
1861 /* a CONNECT request is sent to the server. Switch it to tunnel mode. */
1862 h1_set_req_tunnel_mode(h1s);
1863 }
Christopher Fauletf3158e92019-11-15 11:14:23 +01001864 else if ((h1m->flags & H1_MF_RESP) &&
1865 ((h1s->meth == HTTP_METH_CONNECT && h1s->status == 200) || h1s->status == 101)) {
Ilya Shipitsinc02a23f2020-05-06 00:53:22 +05001866 /* a successful reply to a CONNECT or a protocol switching is sent
Christopher Fauletf3158e92019-11-15 11:14:23 +01001867 * to the client. Switch the response to tunnel mode.
1868 */
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001869 h1_set_res_tunnel_mode(h1s);
Christopher Faulet6b81df72019-10-01 22:08:43 +02001870 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 +01001871 }
Christopher Fauletb75b5ea2019-05-17 08:37:28 +02001872 else if ((h1m->flags & H1_MF_RESP) &&
1873 h1s->status < 200 && (h1s->status == 100 || h1s->status >= 102)) {
1874 h1m_init_res(&h1s->res);
1875 h1m->flags |= (H1_MF_NO_PHDR|H1_MF_CLEAN_CONN_HDR);
Christopher Fauletada34b62019-05-24 16:36:43 +02001876 h1s->flags &= ~H1S_F_HAVE_O_CONN;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001877 TRACE_STATE("1xx response xferred", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1c->conn, h1s);
Christopher Fauletb75b5ea2019-05-17 08:37:28 +02001878 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02001879 else if ((h1m->flags & H1_MF_RESP) && h1s->meth == HTTP_METH_HEAD) {
Christopher Fauletb8fc3042019-07-01 16:17:30 +02001880 h1m->state = H1_MSG_DONE;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001881 TRACE_STATE("HEAD response processed", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1c->conn, h1s);
1882 }
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001883 else
1884 h1m->state = H1_MSG_DATA;
Christopher Faulet9768c262018-10-22 09:34:31 +02001885 break;
1886
Christopher Faulet94b2c762019-05-24 15:28:57 +02001887 case H1_MSG_DATA:
Christopher Fauletf8db73e2019-07-04 17:12:12 +02001888 case H1_MSG_TUNNEL:
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001889 if (type == HTX_BLK_EOM) {
1890 /* Chunked message without explicit trailers */
1891 if (h1m->flags & H1_MF_CHNK) {
Christopher Fauletc2518a52019-06-25 21:41:02 +02001892 if (!chunk_memcat(&tmp, "0\r\n\r\n", 5))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001893 goto full;
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001894 }
1895 goto done;
1896 }
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001897 else if (type == HTX_BLK_EOT || type == HTX_BLK_TLR) {
Christopher Faulet5433a0b2019-06-27 17:40:14 +02001898 /* If the message is not chunked, never
1899 * add the last chunk. */
1900 if ((h1m->flags & H1_MF_CHNK) && !chunk_memcat(&tmp, "0\r\n", 3))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001901 goto full;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001902 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 +02001903 goto trailers;
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001904 }
Christopher Faulet94b2c762019-05-24 15:28:57 +02001905 else if (type != HTX_BLK_DATA)
1906 goto error;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001907
1908 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 +02001909
1910
1911 if (vlen > count) {
1912 /* Get the maximum amount of data we can xferred */
1913 vlen = count;
1914 }
1915
1916 chklen = 0;
1917 if (h1m->flags & H1_MF_CHNK) {
1918 chklen = b_room(&tmp);
1919 chklen = ((chklen < 16) ? 1 : (chklen < 256) ? 2 :
1920 (chklen < 4096) ? 3 : (chklen < 65536) ? 4 :
1921 (chklen < 1048576) ? 5 : 8);
1922 chklen += 4; /* 2 x CRLF */
1923 }
1924
1925 if (vlen + chklen > b_room(&tmp)) {
1926 /* too large for the buffer */
1927 if (chklen >= b_room(&tmp))
1928 goto full;
1929 vlen = b_room(&tmp) - chklen;
1930 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001931 v = htx_get_blk_value(chn_htx, blk);
Christopher Fauletb2e84162018-12-06 11:39:49 +01001932 v.len = vlen;
Christopher Faulet53a899b2019-10-08 16:38:42 +02001933 if (!h1_format_htx_data(v, &tmp, !!(h1m->flags & H1_MF_CHNK)))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001934 goto full;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001935
1936 if (h1m->state == H1_MSG_DATA)
1937 TRACE_PROTO((!(h1m->flags & H1_MF_RESP) ? "H1 request payload data xferred" : "H1 response payload data xferred"),
Willy Tarreau022e5e52020-09-10 09:33:15 +02001938 H1_EV_TX_DATA|H1_EV_TX_BODY, h1c->conn, h1s, 0, (size_t[]){v.len});
Christopher Faulet6b81df72019-10-01 22:08:43 +02001939 else
1940 TRACE_PROTO((!(h1m->flags & H1_MF_RESP) ? "H1 request tunneled data xferred" : "H1 response tunneled data xferred"),
Willy Tarreau022e5e52020-09-10 09:33:15 +02001941 H1_EV_TX_DATA|H1_EV_TX_BODY, h1c->conn, h1s, 0, (size_t[]){v.len});
Christopher Faulet9768c262018-10-22 09:34:31 +02001942 break;
1943
Christopher Faulet94b2c762019-05-24 15:28:57 +02001944 case H1_MSG_TRAILERS:
1945 if (type == HTX_BLK_EOM)
1946 goto done;
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001947 else if (type != HTX_BLK_TLR && type != HTX_BLK_EOT)
Christopher Faulet94b2c762019-05-24 15:28:57 +02001948 goto error;
1949 trailers:
Christopher Faulet9768c262018-10-22 09:34:31 +02001950 h1m->state = H1_MSG_TRAILERS;
Christopher Faulet5433a0b2019-06-27 17:40:14 +02001951 /* If the message is not chunked, ignore
1952 * trailers. It may happen with H2 messages. */
1953 if (!(h1m->flags & H1_MF_CHNK))
1954 break;
1955
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001956 if (type == HTX_BLK_EOT) {
Christopher Fauletc2518a52019-06-25 21:41:02 +02001957 if (!chunk_memcat(&tmp, "\r\n", 2))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001958 goto full;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001959 TRACE_PROTO((!(h1m->flags & H1_MF_RESP) ? "H1 request trailers xferred" : "H1 response trailers xferred"),
1960 H1_EV_TX_DATA|H1_EV_TX_TLRS, h1c->conn, h1s);
Christopher Faulet32188212018-11-20 18:21:43 +01001961 }
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001962 else { // HTX_BLK_TLR
1963 n = htx_get_blk_name(chn_htx, blk);
1964 v = htx_get_blk_value(chn_htx, blk);
Christopher Faulet98fbe952019-07-22 16:18:24 +02001965
1966 /* Try to adjust the case of the header name */
1967 if (h1c->px->options2 & (PR_O2_H1_ADJ_BUGCLI|PR_O2_H1_ADJ_BUGSRV))
1968 h1_adjust_case_outgoing_hdr(h1s, h1m, &n);
Christopher Faulet53a899b2019-10-08 16:38:42 +02001969 if (!h1_format_htx_hdr(n, v, &tmp))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001970 goto full;
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001971 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001972 break;
1973
Christopher Faulet94b2c762019-05-24 15:28:57 +02001974 case H1_MSG_DONE:
1975 if (type != HTX_BLK_EOM)
1976 goto error;
1977 done:
1978 h1m->state = H1_MSG_DONE;
Christopher Fauletf3158e92019-11-15 11:14:23 +01001979 if (!(h1m->flags & H1_MF_RESP) && h1s->status == 101) {
1980 h1_set_req_tunnel_mode(h1s);
1981 TRACE_STATE("switch H1 request in tunnel mode", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1c->conn, h1s);
1982 }
Christopher Faulet089acd52020-09-21 10:57:52 +02001983 else if (h1s->h1c->flags & H1C_F_WAIT_OPPOSITE) {
1984 h1s->h1c->flags &= ~H1C_F_WAIT_OPPOSITE;
Willy Tarreau2c1f37d2020-03-04 17:50:02 +01001985 h1c->conn->xprt->subscribe(h1c->conn, h1c->conn->xprt_ctx, SUB_RETRY_RECV, &h1c->wait_event);
Christopher Faulet089acd52020-09-21 10:57:52 +02001986 TRACE_STATE("Re-enable read on h1c", H1_EV_TX_DATA|H1_EV_H1C_BLK|H1_EV_H1C_WAKE, h1c->conn, h1s);
Christopher Fauletcd67bff2019-06-14 16:54:15 +02001987 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02001988
1989 TRACE_USER((!(h1m->flags & H1_MF_RESP) ? "H1 request fully xferred" : "H1 response fully xferred"),
1990 H1_EV_TX_DATA, h1c->conn, h1s);
Christopher Faulet9768c262018-10-22 09:34:31 +02001991 break;
1992
Christopher Faulet9768c262018-10-22 09:34:31 +02001993 default:
Christopher Faulet94b2c762019-05-24 15:28:57 +02001994 error:
Christopher Faulet6b81df72019-10-01 22:08:43 +02001995 TRACE_PROTO("formatting error", H1_EV_TX_DATA, h1c->conn, h1s);
Christopher Fauletd87d3fa2019-06-26 15:16:28 +02001996 /* Unexpected error during output processing */
Christopher Faulet69b48212019-09-09 10:11:30 +02001997 chn_htx->flags |= HTX_FL_PROCESSING_ERROR;
Christopher Faulet60ef12c2020-09-24 10:05:44 +02001998 h1s->flags |= H1S_F_PROCESSING_ERROR;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001999 TRACE_STATE("processing error, set error on h1c/h1s", H1_EV_H1C_ERR|H1_EV_H1S_ERR, h1c->conn, h1s);
2000 TRACE_DEVEL("unexpected error", H1_EV_TX_DATA|H1_EV_STRM_ERR, h1c->conn, h1s);
Christopher Faulet9768c262018-10-22 09:34:31 +02002001 break;
2002 }
Christopher Faulet94b2c762019-05-24 15:28:57 +02002003
2004 nextblk:
Christopher Fauletb2e84162018-12-06 11:39:49 +01002005 total += vlen;
2006 count -= vlen;
2007 if (sz == vlen)
2008 blk = htx_remove_blk(chn_htx, blk);
2009 else {
2010 htx_cut_data_blk(chn_htx, blk, vlen);
2011 break;
2012 }
Christopher Faulet129817b2018-09-20 16:14:40 +02002013 }
2014
Christopher Faulet9768c262018-10-22 09:34:31 +02002015 copy:
Willy Tarreauc5efa332018-12-05 11:19:27 +01002016 /* when the output buffer is empty, tmp shares the same area so that we
2017 * only have to update pointers and lengths.
2018 */
Christopher Fauletc2518a52019-06-25 21:41:02 +02002019 if (tmp.area == h1c->obuf.area + h1c->obuf.head)
2020 h1c->obuf.data = tmp.data;
Willy Tarreauc5efa332018-12-05 11:19:27 +01002021 else
Christopher Fauletc2518a52019-06-25 21:41:02 +02002022 b_putblk(&h1c->obuf, tmp.area, tmp.data);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002023
Willy Tarreau3815b222018-12-11 19:50:43 +01002024 htx_to_buf(chn_htx, buf);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002025 out:
2026 if (!buf_room_for_htx_data(&h1c->obuf)) {
2027 TRACE_STATE("h1c obuf full", H1_EV_TX_DATA|H1_EV_H1S_BLK, h1c->conn, h1s);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002028 h1c->flags |= H1C_F_OUT_FULL;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002029 }
Christopher Faulet9768c262018-10-22 09:34:31 +02002030 end:
Christopher Faulet6b81df72019-10-01 22:08:43 +02002031 TRACE_LEAVE(H1_EV_TX_DATA, h1c->conn, h1s, chn_htx, (size_t[]){total});
Christopher Faulet9768c262018-10-22 09:34:31 +02002032 return total;
Christopher Fauleta61aa542019-10-14 14:17:00 +02002033
2034 full:
2035 TRACE_STATE("h1c obuf full", H1_EV_TX_DATA|H1_EV_H1S_BLK, h1c->conn, h1s);
2036 h1c->flags |= H1C_F_OUT_FULL;
2037 goto copy;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002038}
2039
Christopher Faulet51dbc942018-09-13 09:05:15 +02002040/*********************************************************/
2041/* functions below are I/O callbacks from the connection */
2042/*********************************************************/
Christopher Faulete17fa2f2018-12-11 16:25:36 +01002043static void h1_wake_stream_for_recv(struct h1s *h1s)
2044{
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002045 if (h1s && h1s->subs && h1s->subs->events & SUB_RETRY_RECV) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002046 TRACE_POINT(H1_EV_STRM_WAKE, h1s->h1c->conn, h1s);
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002047 tasklet_wakeup(h1s->subs->tasklet);
2048 h1s->subs->events &= ~SUB_RETRY_RECV;
2049 if (!h1s->subs->events)
2050 h1s->subs = NULL;
Christopher Faulete17fa2f2018-12-11 16:25:36 +01002051 }
2052}
2053static void h1_wake_stream_for_send(struct h1s *h1s)
2054{
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002055 if (h1s && h1s->subs && h1s->subs->events & SUB_RETRY_SEND) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002056 TRACE_POINT(H1_EV_STRM_WAKE, h1s->h1c->conn, h1s);
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002057 tasklet_wakeup(h1s->subs->tasklet);
2058 h1s->subs->events &= ~SUB_RETRY_SEND;
2059 if (!h1s->subs->events)
2060 h1s->subs = NULL;
Christopher Faulete17fa2f2018-12-11 16:25:36 +01002061 }
Christopher Fauletc18fc232020-10-06 17:41:36 +02002062}
2063
2064/* Try to send an HTTP error with h1c->errcode status code. It returns 1 on success
2065 * and 0 on error. The flag H1C_F_ERR_PENDING is set on the H1 connection for
2066 * retryable errors (allocation error or buffer full). On success, the error is
2067 * copied in the output buffer.
2068*/
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002069static int h1_send_error(struct h1c *h1c)
Christopher Fauletc18fc232020-10-06 17:41:36 +02002070{
2071 int rc = http_get_status_idx(h1c->errcode);
2072 int ret = 0;
2073
2074 TRACE_ENTER(H1_EV_H1C_ERR, h1c->conn, 0, 0, (size_t[]){h1c->errcode});
2075
2076 /* Verify if the error is mapped on /dev/null or any empty file */
2077 /// XXX: do a function !
2078 if (h1c->px->replies[rc] &&
2079 h1c->px->replies[rc]->type == HTTP_REPLY_ERRMSG &&
2080 h1c->px->replies[rc]->body.errmsg &&
2081 b_is_null(h1c->px->replies[rc]->body.errmsg)) {
2082 /* Empty error, so claim a success */
2083 ret = 1;
2084 goto out;
2085 }
2086
2087 if (h1c->flags & (H1C_F_OUT_ALLOC|H1C_F_OUT_FULL)) {
2088 h1c->flags |= H1C_F_ERR_PENDING;
2089 goto out;
2090 }
2091
2092 if (!h1_get_buf(h1c, &h1c->obuf)) {
2093 h1c->flags |= (H1C_F_OUT_ALLOC|H1C_F_ERR_PENDING);
2094 TRACE_STATE("waiting for h1c obuf allocation", H1_EV_H1C_ERR|H1_EV_H1C_BLK, h1c->conn);
2095 goto out;
2096 }
2097 ret = b_istput(&h1c->obuf, ist2(http_err_msgs[rc], strlen(http_err_msgs[rc])));
2098 if (unlikely(ret <= 0)) {
2099 if (!ret) {
2100 h1c->flags |= (H1C_F_OUT_FULL|H1C_F_ERR_PENDING);
2101 TRACE_STATE("h1c obuf full", H1_EV_H1C_ERR|H1_EV_H1C_BLK, h1c->conn);
2102 goto out;
2103 }
2104 else {
2105 /* we cannot report this error, so claim a success */
2106 ret = 1;
2107 }
2108 }
2109 h1c->flags &= ~H1C_F_ERR_PENDING;
2110 out:
2111 TRACE_LEAVE(H1_EV_H1C_ERR, h1c->conn);
2112 return ret;
2113}
2114
2115/* Try to send a 500 internal error. It relies on h1_send_error to send the
2116 * error. This function takes care of incrementing stats and tracked counters.
2117 */
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002118static int h1_handle_internal_err(struct h1c *h1c)
Christopher Fauletc18fc232020-10-06 17:41:36 +02002119{
2120 struct session *sess = h1c->conn->owner;
2121 int ret = 1;
2122
2123 session_inc_http_req_ctr(sess);
2124 session_inc_http_err_ctr(sess);
2125 proxy_inc_fe_req_ctr(sess->listener, sess->fe);
2126 _HA_ATOMIC_ADD(&sess->fe->fe_counters.p.http.rsp[5], 1);
2127 _HA_ATOMIC_ADD(&sess->fe->fe_counters.internal_errors, 1);
2128 if (sess->listener->counters)
2129 _HA_ATOMIC_ADD(&sess->listener->counters->internal_errors, 1);
2130
2131 h1c->errcode = 500;
2132 ret = h1_send_error(h1c);
2133 sess_log(sess);
2134 return ret;
Christopher Faulete17fa2f2018-12-11 16:25:36 +01002135}
2136
Christopher Fauletc18fc232020-10-06 17:41:36 +02002137/* Try to send a 400 bad request error. It relies on h1_send_error to send the
2138 * error. This function takes care of incrementing stats and tracked counters.
2139 */
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002140static int h1_handle_bad_req(struct h1c *h1c)
Christopher Fauletc18fc232020-10-06 17:41:36 +02002141{
2142 struct session *sess = h1c->conn->owner;
2143 int ret = 1;
2144
2145 if (!b_data(&h1c->ibuf) && ((h1c->flags & H1C_F_WAIT_NEXT_REQ) || (sess->fe->options & PR_O_IGNORE_PRB)))
2146 goto end;
2147
2148 session_inc_http_req_ctr(sess);
2149 session_inc_http_err_ctr(sess);
2150 proxy_inc_fe_req_ctr(sess->listener, sess->fe);
2151 _HA_ATOMIC_ADD(&sess->fe->fe_counters.p.http.rsp[4], 1);
2152 _HA_ATOMIC_ADD(&sess->fe->fe_counters.failed_req, 1);
2153 if (sess->listener->counters)
2154 _HA_ATOMIC_ADD(&sess->listener->counters->failed_req, 1);
2155
2156 h1c->errcode = 400;
2157 ret = h1_send_error(h1c);
2158 sess_log(sess);
2159
2160 end:
2161 return ret;
2162}
2163
2164/* Try to send a 408 timeout error. It relies on h1_send_error to send the
2165 * error. This function takes care of incrementing stats and tracked counters.
2166 */
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002167static int h1_handle_req_tout(struct h1c *h1c)
Christopher Fauletc18fc232020-10-06 17:41:36 +02002168{
2169 struct session *sess = h1c->conn->owner;
2170 int ret = 1;
2171
2172 if (!b_data(&h1c->ibuf) && ((h1c->flags & H1C_F_WAIT_NEXT_REQ) || (sess->fe->options & PR_O_IGNORE_PRB)))
2173 goto end;
2174
2175 session_inc_http_req_ctr(sess);
2176 session_inc_http_err_ctr(sess);
2177 proxy_inc_fe_req_ctr(sess->listener, sess->fe);
2178 _HA_ATOMIC_ADD(&sess->fe->fe_counters.p.http.rsp[4], 1);
2179 _HA_ATOMIC_ADD(&sess->fe->fe_counters.failed_req, 1);
2180 if (sess->listener->counters)
2181 _HA_ATOMIC_ADD(&sess->listener->counters->failed_req, 1);
2182
2183 h1c->errcode = 408;
2184 ret = h1_send_error(h1c);
2185 sess_log(sess);
2186 end:
2187 return ret;
2188}
2189
2190
Christopher Faulet51dbc942018-09-13 09:05:15 +02002191/*
2192 * Attempt to read data, and subscribe if none available
2193 */
2194static int h1_recv(struct h1c *h1c)
2195{
2196 struct connection *conn = h1c->conn;
Olivier Houchard75159a92018-12-03 18:46:09 +01002197 size_t ret = 0, max;
Willy Tarreau6e59cb52020-02-20 11:11:50 +01002198 int flags = 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002199
Christopher Faulet6b81df72019-10-01 22:08:43 +02002200 TRACE_ENTER(H1_EV_H1C_RECV, h1c->conn);
2201
2202 if (h1c->wait_event.events & SUB_RETRY_RECV) {
2203 TRACE_DEVEL("leaving on sub_recv", H1_EV_H1C_RECV, h1c->conn);
Christopher Fauletc386a882018-12-04 16:06:28 +01002204 return (b_data(&h1c->ibuf));
Christopher Faulet6b81df72019-10-01 22:08:43 +02002205 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002206
Christopher Fauletae635762020-09-21 11:47:16 +02002207 if ((h1c->flags & H1C_F_WANT_SPLICE) || !h1_recv_allowed(h1c)) {
2208 TRACE_DEVEL("leaving on (want_splice|!recv_allowed)", H1_EV_H1C_RECV, h1c->conn);
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002209 return 1;
Olivier Houchard75159a92018-12-03 18:46:09 +01002210 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002211
Christopher Fauletf7d5ff32019-04-16 13:55:08 +02002212 if (!h1_get_buf(h1c, &h1c->ibuf)) {
2213 h1c->flags |= H1C_F_IN_ALLOC;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002214 TRACE_STATE("waiting for h1c ibuf allocation", H1_EV_H1C_RECV|H1_EV_H1C_BLK, h1c->conn);
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002215 return 0;
Christopher Faulet9768c262018-10-22 09:34:31 +02002216 }
Christopher Faulet1be55f92018-10-02 15:59:23 +02002217
Olivier Houchard29a22bc2018-12-04 18:16:45 +01002218 /*
2219 * If we only have a small amount of data, realign it,
2220 * it's probably cheaper than doing 2 recv() calls.
2221 */
2222 if (b_data(&h1c->ibuf) > 0 && b_data(&h1c->ibuf) < 128)
2223 b_slow_realign(&h1c->ibuf, trash.area, 0);
2224
Willy Tarreau6e59cb52020-02-20 11:11:50 +01002225 /* avoid useless reads after first responses */
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002226 if (!h1c->h1s ||
2227 (!(h1c->flags & H1C_F_IS_BACK) && h1c->h1s->req.state == H1_MSG_RQBEFORE) ||
2228 ((h1c->flags & H1C_F_IS_BACK) && h1c->h1s->res.state == H1_MSG_RPBEFORE))
Willy Tarreau6e59cb52020-02-20 11:11:50 +01002229 flags |= CO_RFL_READ_ONCE;
2230
Willy Tarreau45f2b892018-12-05 07:59:27 +01002231 max = buf_room_for_htx_data(&h1c->ibuf);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002232 if (max) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002233 if (h1c->flags & H1C_F_IN_FULL) {
2234 h1c->flags &= ~H1C_F_IN_FULL;
2235 TRACE_STATE("h1c ibuf not full anymore", H1_EV_H1C_RECV|H1_EV_H1C_BLK);
2236 }
Willy Tarreau78f548f2018-12-05 10:02:39 +01002237
Willy Tarreaue0f24ee2018-12-14 10:51:23 +01002238 b_realign_if_empty(&h1c->ibuf);
Willy Tarreau78f548f2018-12-05 10:02:39 +01002239 if (!b_data(&h1c->ibuf)) {
2240 /* try to pre-align the buffer like the rxbufs will be
2241 * to optimize memory copies.
2242 */
Willy Tarreau78f548f2018-12-05 10:02:39 +01002243 h1c->ibuf.head = sizeof(struct htx);
2244 }
Willy Tarreau6e59cb52020-02-20 11:11:50 +01002245 ret = conn->xprt->rcv_buf(conn, conn->xprt_ctx, &h1c->ibuf, max, flags);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002246 }
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002247 if (max && !ret && h1_recv_allowed(h1c)) {
2248 TRACE_STATE("failed to receive data, subscribing", H1_EV_H1C_RECV, h1c->conn);
2249 conn->xprt->subscribe(conn, conn->xprt_ctx, SUB_RETRY_RECV, &h1c->wait_event);
Christopher Fauletcf56b992018-12-11 16:12:31 +01002250 }
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002251 else {
2252 h1_wake_stream_for_recv(h1c->h1s);
2253 TRACE_DATA("data received", H1_EV_H1C_RECV, h1c->conn, 0, 0, (size_t[]){ret});
Willy Tarreaufbdf90a2019-06-03 13:42:54 +02002254 }
2255
Christopher Faulet51dbc942018-09-13 09:05:15 +02002256 if (!b_data(&h1c->ibuf))
2257 h1_release_buf(h1c, &h1c->ibuf);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002258 else if (!buf_room_for_htx_data(&h1c->ibuf)) {
Christopher Faulet51dbc942018-09-13 09:05:15 +02002259 h1c->flags |= H1C_F_IN_FULL;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002260 TRACE_STATE("h1c ibuf full", H1_EV_H1C_RECV|H1_EV_H1C_BLK);
2261 }
2262
2263 TRACE_LEAVE(H1_EV_H1C_RECV, h1c->conn);
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002264 return !!ret || (conn->flags & CO_FL_ERROR) || conn_xprt_read0_pending(conn);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002265}
2266
2267
2268/*
2269 * Try to send data if possible
2270 */
2271static int h1_send(struct h1c *h1c)
2272{
2273 struct connection *conn = h1c->conn;
2274 unsigned int flags = 0;
2275 size_t ret;
2276 int sent = 0;
2277
Christopher Faulet6b81df72019-10-01 22:08:43 +02002278 TRACE_ENTER(H1_EV_H1C_SEND, h1c->conn);
2279
2280 if (conn->flags & CO_FL_ERROR) {
2281 TRACE_DEVEL("leaving on connection error", H1_EV_H1C_SEND, h1c->conn);
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002282 b_reset(&h1c->obuf);
2283 return 1;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002284 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002285
2286 if (!b_data(&h1c->obuf))
2287 goto end;
2288
Christopher Faulet46230362019-10-17 16:04:20 +02002289 if (h1c->flags & H1C_F_CO_MSG_MORE)
Christopher Faulet51dbc942018-09-13 09:05:15 +02002290 flags |= CO_SFL_MSG_MORE;
Christopher Faulet46230362019-10-17 16:04:20 +02002291 if (h1c->flags & H1C_F_CO_STREAMER)
2292 flags |= CO_SFL_STREAMER;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002293
Olivier Houcharde179d0e2019-03-21 18:27:17 +01002294 ret = conn->xprt->snd_buf(conn, conn->xprt_ctx, &h1c->obuf, b_data(&h1c->obuf), flags);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002295 if (ret > 0) {
Willy Tarreau022e5e52020-09-10 09:33:15 +02002296 TRACE_DATA("data sent", H1_EV_H1C_SEND, h1c->conn, 0, 0, (size_t[]){ret});
Christopher Faulet6b81df72019-10-01 22:08:43 +02002297 if (h1c->flags & H1C_F_OUT_FULL) {
2298 h1c->flags &= ~H1C_F_OUT_FULL;
2299 TRACE_STATE("h1c obuf not full anymore", H1_EV_STRM_SEND|H1_EV_H1S_BLK, h1c->conn);
2300 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002301 b_del(&h1c->obuf, ret);
2302 sent = 1;
2303 }
2304
Christopher Faulet145aa472018-12-06 10:56:20 +01002305 if (conn->flags & (CO_FL_ERROR|CO_FL_SOCK_WR_SH)) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002306 TRACE_DEVEL("connection error or output closed", H1_EV_H1C_SEND, h1c->conn);
Christopher Faulet145aa472018-12-06 10:56:20 +01002307 /* error or output closed, nothing to send, clear the buffer to release it */
2308 b_reset(&h1c->obuf);
2309 }
2310
Christopher Faulet51dbc942018-09-13 09:05:15 +02002311 end:
Christopher Faulete17fa2f2018-12-11 16:25:36 +01002312 if (!(h1c->flags & H1C_F_OUT_FULL))
2313 h1_wake_stream_for_send(h1c->h1s);
Olivier Houchard75159a92018-12-03 18:46:09 +01002314
Christopher Faulet51dbc942018-09-13 09:05:15 +02002315 /* We're done, no more to send */
2316 if (!b_data(&h1c->obuf)) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002317 TRACE_DEVEL("leaving with everything sent", H1_EV_H1C_SEND, h1c->conn);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002318 h1_release_buf(h1c, &h1c->obuf);
Christopher Faulet3ced1d12020-11-27 16:44:01 +01002319 if (h1c->flags & H1C_F_ST_SHUTDOWN) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002320 TRACE_STATE("process pending shutdown for writes", H1_EV_H1C_SEND, h1c->conn);
Christopher Faulet666a0c42019-01-08 11:12:04 +01002321 h1_shutw_conn(conn, CS_SHW_NORMAL);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002322 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002323 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02002324 else if (!(h1c->wait_event.events & SUB_RETRY_SEND)) {
2325 TRACE_STATE("more data to send, subscribing", H1_EV_H1C_SEND, h1c->conn);
Olivier Houcharde179d0e2019-03-21 18:27:17 +01002326 conn->xprt->subscribe(conn, conn->xprt_ctx, SUB_RETRY_SEND, &h1c->wait_event);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002327 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002328
Christopher Faulet6b81df72019-10-01 22:08:43 +02002329 TRACE_LEAVE(H1_EV_H1C_SEND, h1c->conn);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002330 return sent;
2331}
2332
Christopher Faulet51dbc942018-09-13 09:05:15 +02002333/* callback called on any event by the connection handler.
2334 * It applies changes and returns zero, or < 0 if it wants immediate
2335 * destruction of the connection.
2336 */
2337static int h1_process(struct h1c * h1c)
2338{
2339 struct connection *conn = h1c->conn;
Christopher Fauletfeb11742018-11-29 15:12:34 +01002340 struct h1s *h1s = h1c->h1s;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002341
Christopher Faulet6b81df72019-10-01 22:08:43 +02002342 TRACE_ENTER(H1_EV_H1C_WAKE, conn);
2343
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002344 /* Try to parse now the first block of a request, creating the H1 stream if necessary */
2345 if (b_data(&h1c->ibuf) && /* Input data to be processed */
Christopher Faulet3ced1d12020-11-27 16:44:01 +01002346 (h1c->flags & (H1C_F_ST_IDLE|H1C_F_ST_EMBRYONIC)) && /* IDLE h1 connection or no CS attached to the h1 stream */
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002347 !(h1c->flags & H1C_F_IN_SALLOC)) { /* No allocation failure on the stream rxbuf */
2348 struct buffer *buf;
2349 size_t count;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002350
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002351 /* When it happens for a backend connection, we may release it (it is probably a 408) */
2352 if (h1c->flags & H1C_F_IS_BACK)
Christopher Faulet539e0292018-11-19 10:40:09 +01002353 goto release;
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002354
2355 /* First of all handle H1 to H2 upgrade (no need to create the H1 stream) */
Christopher Faulet3ced1d12020-11-27 16:44:01 +01002356 if (((h1c->flags & (H1C_F_ST_IDLE|H1C_F_WAIT_NEXT_REQ)) == H1C_F_ST_IDLE) && /* First request with no h1s */
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002357 !(h1c->px->options2 & PR_O2_NO_H2_UPGRADE)) { /* H2 upgrade supported by the proxy */
2358 /* Try to match H2 preface before parsing the request headers. */
2359 if (b_isteq(&h1c->ibuf, 0, b_data(&h1c->ibuf), ist(H2_CONN_PREFACE)) > 0) {
2360 h1c->flags |= H1C_F_UPG_H2C;
2361 TRACE_STATE("release h1c to perform H2 upgrade ", H1_EV_RX_DATA|H1_EV_H1C_WAKE);
Christopher Faulet539e0292018-11-19 10:40:09 +01002362 goto release;
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002363 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002364 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002365
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002366 /* Create the H1 stream if not already there */
2367 if (!h1s) {
2368 h1s = h1c_frt_stream_new(h1c);
2369 if (!h1s) {
2370 b_reset(&h1c->ibuf);
Christopher Faulet3ced1d12020-11-27 16:44:01 +01002371 h1c->flags = (h1c->flags & ~(H1C_F_ST_IDLE|H1C_F_WAIT_NEXT_REQ)) | H1C_F_ST_ERROR;
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002372 goto no_parsing;
2373 }
2374 }
2375
2376 if (h1s->sess->t_idle == -1)
2377 h1s->sess->t_idle = tv_ms_elapsed(&h1s->sess->tv_accept, &now) - h1s->sess->t_handshake;
2378
2379 /* Get the stream rxbuf */
2380 buf = h1_get_buf(h1c, &h1s->rxbuf);
2381 if (!buf) {
2382 h1c->flags |= H1C_F_IN_SALLOC;
2383 TRACE_STATE("waiting for stream rxbuf allocation", H1_EV_H1C_WAKE|H1_EV_H1C_BLK, h1c->conn);
2384 return 0;
2385 }
2386
2387 count = (buf->size - sizeof(struct htx) - global.tune.maxrewrite);
2388 h1_process_input(h1c, buf, count);
2389 h1_release_buf(h1c, &h1s->rxbuf);
2390 h1_set_idle_expiration(h1c);
2391
2392 no_parsing:
Christopher Faulet3ced1d12020-11-27 16:44:01 +01002393 if (h1c->flags & H1C_F_ST_ERROR) {
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002394 h1_handle_internal_err(h1c);
Christopher Faulet3ced1d12020-11-27 16:44:01 +01002395 h1c->flags &= ~(H1C_F_ST_IDLE|H1C_F_WAIT_NEXT_REQ);
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002396 }
2397 else if (h1s->flags & H1S_F_PARSING_ERROR) {
2398 h1_handle_bad_req(h1c);
Christopher Faulet3ced1d12020-11-27 16:44:01 +01002399 h1c->flags = (h1c->flags & ~(H1C_F_ST_IDLE|H1C_F_WAIT_NEXT_REQ)) | H1C_F_ST_ERROR;
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002400 }
Christopher Fauletae635762020-09-21 11:47:16 +02002401 }
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002402 h1_send(h1c);
2403
Christopher Faulet3ced1d12020-11-27 16:44:01 +01002404 if ((conn->flags & CO_FL_ERROR) || conn_xprt_read0_pending(conn) || (h1c->flags & H1C_F_ST_ERROR)) {
2405 if (!(h1c->flags & H1C_F_ST_ATTACHED)) {
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002406 /* No conn-stream */
2407 /* shutdown for reads and error on the frontend connection: Send an error */
Christopher Faulet3ced1d12020-11-27 16:44:01 +01002408 if (!(h1c->flags & (H1C_F_IS_BACK|H1C_F_ST_ERROR))) {
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002409 if (h1_handle_bad_req(h1c))
2410 h1_send(h1c);
Christopher Faulet3ced1d12020-11-27 16:44:01 +01002411 h1c->flags = (h1c->flags & ~(H1C_F_ST_IDLE|H1C_F_WAIT_NEXT_REQ)) | H1C_F_ST_ERROR;
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002412 }
2413
2414 /* Handle pending error, if any (only possible on frontend connection) */
2415 if (h1c->flags & H1C_F_ERR_PENDING) {
2416 BUG_ON(h1c->flags & H1C_F_IS_BACK);
2417 if (h1_send_error(h1c))
2418 h1_send(h1c);
2419 }
Christopher Fauletae635762020-09-21 11:47:16 +02002420
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002421 /* If there is some pending outgoing data or error, just wait */
2422 if (b_data(&h1c->obuf) || (h1c->flags & H1C_F_ERR_PENDING))
2423 goto end;
Christopher Fauletfeb11742018-11-29 15:12:34 +01002424
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002425 /* Otherwise we can release the H1 connection */
2426 goto release;
2427 }
2428 else {
2429 /* Here there is still a H1 stream with a conn-stream.
2430 * Report the connection state at the stream level
2431 */
2432 if (conn_xprt_read0_pending(conn)) {
2433 h1s->flags |= H1S_F_REOS;
2434 TRACE_STATE("read0 on connection", H1_EV_H1C_RECV, conn, h1s);
2435 }
Christopher Faulet3ced1d12020-11-27 16:44:01 +01002436 if ((h1c->flags & H1C_F_ST_ERROR) || (conn->flags & CO_FL_ERROR))
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002437 h1s->cs->flags |= CS_FL_ERROR;
2438 TRACE_POINT(H1_EV_STRM_WAKE, h1c->conn, h1s);
2439 if (h1s->cs->data_cb->wake) {
2440 TRACE_POINT(H1_EV_STRM_WAKE, h1c->conn, h1s);
2441 h1s->cs->data_cb->wake(h1s->cs);
2442 }
2443 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02002444 }
Willy Tarreauc493c9c2019-06-03 14:18:22 +02002445
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002446 if (!b_data(&h1c->ibuf))
2447 h1_release_buf(h1c, &h1c->ibuf);
2448
2449
2450 if ((h1c->flags & H1C_F_WANT_SPLICE) && !h1s_data_pending(h1s)) {
2451 TRACE_DEVEL("xprt rcv_buf blocked (want_splice), notify h1s for recv", H1_EV_H1C_RECV, h1c->conn);
2452 h1_wake_stream_for_recv(h1s);
Olivier Houchard75159a92018-12-03 18:46:09 +01002453 }
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002454
Christopher Faulet47365272018-10-31 17:40:50 +01002455 end:
Christopher Faulet7a145d62020-08-05 11:31:16 +02002456 h1_refresh_timeout(h1c);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002457 TRACE_LEAVE(H1_EV_H1C_WAKE, conn);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002458 return 0;
Christopher Faulet539e0292018-11-19 10:40:09 +01002459
2460 release:
Christopher Faulet73c12072019-04-08 11:23:22 +02002461 h1_release(h1c);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002462 TRACE_DEVEL("leaving after releasing the connection", H1_EV_H1C_WAKE);
Christopher Faulet539e0292018-11-19 10:40:09 +01002463 return -1;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002464}
2465
2466static struct task *h1_io_cb(struct task *t, void *ctx, unsigned short status)
2467{
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01002468 struct connection *conn;
2469 struct tasklet *tl = (struct tasklet *)t;
2470 int conn_in_list;
2471 struct h1c *h1c;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002472 int ret = 0;
2473
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01002474
Olivier Houchardf8f4c2e2020-06-29 20:15:59 +02002475 HA_SPIN_LOCK(OTHER_LOCK, &idle_conns[tid].takeover_lock);
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01002476 if (tl->context == NULL) {
2477 /* The connection has been taken over by another thread,
2478 * we're no longer responsible for it, so just free the
2479 * tasklet, and do nothing.
2480 */
Olivier Houchardf8f4c2e2020-06-29 20:15:59 +02002481 HA_SPIN_UNLOCK(OTHER_LOCK, &idle_conns[tid].takeover_lock);
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01002482 tasklet_free(tl);
2483 return NULL;
2484 }
2485 h1c = ctx;
2486 conn = h1c->conn;
2487
2488 TRACE_POINT(H1_EV_H1C_WAKE, conn);
2489
2490 /* Remove the connection from the list, to be sure nobody attempts
2491 * to use it while we handle the I/O events
2492 */
2493 conn_in_list = conn->flags & CO_FL_LIST_MASK;
2494 if (conn_in_list)
2495 MT_LIST_DEL(&conn->list);
2496
Olivier Houchardf8f4c2e2020-06-29 20:15:59 +02002497 HA_SPIN_UNLOCK(OTHER_LOCK, &idle_conns[tid].takeover_lock);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002498
Willy Tarreau4f6516d2018-12-19 13:59:17 +01002499 if (!(h1c->wait_event.events & SUB_RETRY_SEND))
Christopher Faulet51dbc942018-09-13 09:05:15 +02002500 ret = h1_send(h1c);
Willy Tarreau4f6516d2018-12-19 13:59:17 +01002501 if (!(h1c->wait_event.events & SUB_RETRY_RECV))
Christopher Faulet51dbc942018-09-13 09:05:15 +02002502 ret |= h1_recv(h1c);
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002503 if (ret || b_data(&h1c->ibuf))
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01002504 ret = h1_process(h1c);
2505 /* If we were in an idle list, we want to add it back into it,
2506 * unless h1_process() returned -1, which mean it has destroyed
2507 * the connection (testing !ret is enough, if h1_process() wasn't
2508 * called then ret will be 0 anyway.
2509 */
2510 if (!ret && conn_in_list) {
2511 struct server *srv = objt_server(conn->target);
2512
2513 if (conn_in_list == CO_FL_SAFE_LIST)
Willy Tarreaua9d7b762020-07-10 08:28:20 +02002514 MT_LIST_ADDQ(&srv->safe_conns[tid], &conn->list);
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01002515 else
Willy Tarreaua9d7b762020-07-10 08:28:20 +02002516 MT_LIST_ADDQ(&srv->idle_conns[tid], &conn->list);
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01002517 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002518 return NULL;
2519}
2520
Olivier Houchard9a86fcb2018-12-11 16:47:14 +01002521static void h1_reset(struct connection *conn)
2522{
Olivier Houchard9a86fcb2018-12-11 16:47:14 +01002523
Olivier Houchard9a86fcb2018-12-11 16:47:14 +01002524}
Christopher Faulet51dbc942018-09-13 09:05:15 +02002525
2526static int h1_wake(struct connection *conn)
2527{
Willy Tarreau3d2ee552018-12-19 14:12:10 +01002528 struct h1c *h1c = conn->ctx;
Olivier Houchard75159a92018-12-03 18:46:09 +01002529 int ret;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002530
Christopher Faulet6b81df72019-10-01 22:08:43 +02002531 TRACE_POINT(H1_EV_H1C_WAKE, conn);
2532
Christopher Faulet539e0292018-11-19 10:40:09 +01002533 h1_send(h1c);
Olivier Houchard75159a92018-12-03 18:46:09 +01002534 ret = h1_process(h1c);
2535 if (ret == 0) {
2536 struct h1s *h1s = h1c->h1s;
2537
Christopher Faulet3ced1d12020-11-27 16:44:01 +01002538 if ((h1c->flags & H1C_F_ST_ATTACHED) && h1s->cs->data_cb->wake) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002539 TRACE_POINT(H1_EV_STRM_WAKE, h1c->conn, h1s);
Olivier Houchard75159a92018-12-03 18:46:09 +01002540 ret = h1s->cs->data_cb->wake(h1s->cs);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002541 }
Olivier Houchard75159a92018-12-03 18:46:09 +01002542 }
2543 return ret;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002544}
2545
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002546/* Connection timeout management. The principle is that if there's no receipt
2547 * nor sending for a certain amount of time, the connection is closed.
2548 */
2549static struct task *h1_timeout_task(struct task *t, void *context, unsigned short state)
2550{
2551 struct h1c *h1c = context;
2552 int expired = tick_is_expired(t->expire, now_ms);
2553
Christopher Fauletc1c66a42020-09-29 15:30:15 +02002554 TRACE_ENTER(H1_EV_H1C_WAKE, h1c ? h1c->conn : NULL);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002555
Willy Tarreau68d4ee92020-06-30 11:19:23 +02002556 if (h1c) {
Christopher Fauletc1c66a42020-09-29 15:30:15 +02002557 /* Make sure nobody stole the connection from us */
2558 HA_SPIN_LOCK(OTHER_LOCK, &idle_conns[tid].takeover_lock);
2559
2560 /* Somebody already stole the connection from us, so we should not
2561 * free it, we just have to free the task.
2562 */
2563 if (!t->context) {
2564 h1c = NULL;
2565 HA_SPIN_UNLOCK(OTHER_LOCK, &idle_conns[tid].takeover_lock);
2566 goto do_leave;
2567 }
2568
Willy Tarreau68d4ee92020-06-30 11:19:23 +02002569 if (!expired) {
Christopher Fauletc1c66a42020-09-29 15:30:15 +02002570 HA_SPIN_UNLOCK(OTHER_LOCK, &idle_conns[tid].takeover_lock);
2571 TRACE_DEVEL("leaving (not expired)", H1_EV_H1C_WAKE, h1c->conn, h1c->h1s);
Willy Tarreau68d4ee92020-06-30 11:19:23 +02002572 return t;
2573 }
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002574
Christopher Fauletc1c66a42020-09-29 15:30:15 +02002575 /* If a conn-stream is still attached to the mux, wait for the
2576 * stream's timeout
Willy Tarreau68d4ee92020-06-30 11:19:23 +02002577 */
Christopher Faulet3ced1d12020-11-27 16:44:01 +01002578 if (h1c->flags & H1C_F_ST_ATTACHED) {
Christopher Fauletc1c66a42020-09-29 15:30:15 +02002579 HA_SPIN_UNLOCK(OTHER_LOCK, &idle_conns[tid].takeover_lock);
2580 t->expire = TICK_ETERNITY;
2581 TRACE_DEVEL("leaving (CS still attached)", H1_EV_H1C_WAKE, h1c->conn, h1c->h1s);
2582 return t;
2583 }
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01002584
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002585 /* Try to send an error to the client */
Christopher Faulet3ced1d12020-11-27 16:44:01 +01002586 if (!(h1c->flags & (H1C_F_IS_BACK|H1C_F_ST_ERROR|H1C_F_ERR_PENDING|H1C_F_ST_SHUTDOWN))) {
2587 h1c->flags = (h1c->flags & ~H1C_F_ST_IDLE) | H1C_F_ST_ERROR;
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002588 if (h1_handle_req_tout(h1c))
2589 h1_send(h1c);
2590 if (b_data(&h1c->obuf) || (h1c->flags & H1C_F_ERR_PENDING)) {
2591 h1_refresh_timeout(h1c);
2592 return t;
2593 }
2594 }
2595
Christopher Fauletc1c66a42020-09-29 15:30:15 +02002596 /* We're about to destroy the connection, so make sure nobody attempts
2597 * to steal it from us.
Willy Tarreau68d4ee92020-06-30 11:19:23 +02002598 */
Christopher Fauletc1c66a42020-09-29 15:30:15 +02002599 if (h1c->conn->flags & CO_FL_LIST_MASK)
Olivier Houchard48ce6a32020-07-02 11:58:05 +02002600 MT_LIST_DEL(&h1c->conn->list);
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01002601
Olivier Houchardf8f4c2e2020-06-29 20:15:59 +02002602 HA_SPIN_UNLOCK(OTHER_LOCK, &idle_conns[tid].takeover_lock);
Willy Tarreau68d4ee92020-06-30 11:19:23 +02002603 }
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01002604
Christopher Fauletc1c66a42020-09-29 15:30:15 +02002605 do_leave:
Olivier Houchard3f795f72019-04-17 22:51:06 +02002606 task_destroy(t);
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002607
2608 if (!h1c) {
2609 /* resources were already deleted */
Christopher Faulet6b81df72019-10-01 22:08:43 +02002610 TRACE_DEVEL("leaving (not more h1c)", H1_EV_H1C_WAKE);
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002611 return NULL;
2612 }
2613
2614 h1c->task = NULL;
Christopher Fauletc1c66a42020-09-29 15:30:15 +02002615 h1_release(h1c);
2616 TRACE_LEAVE(H1_EV_H1C_WAKE);
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002617 return NULL;
2618}
2619
Christopher Faulet51dbc942018-09-13 09:05:15 +02002620/*******************************************/
2621/* functions below are used by the streams */
2622/*******************************************/
Christopher Faulet73c12072019-04-08 11:23:22 +02002623
Christopher Faulet51dbc942018-09-13 09:05:15 +02002624/*
2625 * Attach a new stream to a connection
2626 * (Used for outgoing connections)
2627 */
Olivier Houchardf502aca2018-12-14 19:42:40 +01002628static struct conn_stream *h1_attach(struct connection *conn, struct session *sess)
Christopher Faulet51dbc942018-09-13 09:05:15 +02002629{
Willy Tarreau3d2ee552018-12-19 14:12:10 +01002630 struct h1c *h1c = conn->ctx;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002631 struct conn_stream *cs = NULL;
2632 struct h1s *h1s;
2633
Christopher Faulet6b81df72019-10-01 22:08:43 +02002634 TRACE_ENTER(H1_EV_STRM_NEW, conn);
Christopher Faulet3ced1d12020-11-27 16:44:01 +01002635 if (h1c->flags & H1C_F_ST_ERROR) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002636 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 +02002637 goto end;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002638 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002639
Christopher Faulet236c93b2020-07-02 09:19:54 +02002640 cs = cs_new(h1c->conn, h1c->conn->target);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002641 if (!cs) {
2642 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 +02002643 goto end;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002644 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002645
Christopher Faulet2f0ec662020-09-24 10:30:15 +02002646 h1s = h1c_bck_stream_new(h1c, cs, sess);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002647 if (h1s == NULL) {
2648 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 +02002649 goto end;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002650 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002651
Christopher Faulet6b81df72019-10-01 22:08:43 +02002652 TRACE_LEAVE(H1_EV_STRM_NEW, conn, h1s);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002653 return cs;
2654 end:
2655 cs_free(cs);
2656 return NULL;
2657}
2658
2659/* Retrieves a valid conn_stream from this connection, or returns NULL. For
2660 * this mux, it's easy as we can only store a single conn_stream.
2661 */
2662static const struct conn_stream *h1_get_first_cs(const struct connection *conn)
2663{
Willy Tarreau3d2ee552018-12-19 14:12:10 +01002664 struct h1c *h1c = conn->ctx;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002665 struct h1s *h1s = h1c->h1s;
2666
2667 if (h1s)
2668 return h1s->cs;
2669
2670 return NULL;
2671}
2672
Christopher Faulet73c12072019-04-08 11:23:22 +02002673static void h1_destroy(void *ctx)
Christopher Faulet51dbc942018-09-13 09:05:15 +02002674{
Christopher Faulet73c12072019-04-08 11:23:22 +02002675 struct h1c *h1c = ctx;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002676
Christopher Faulet6b81df72019-10-01 22:08:43 +02002677 TRACE_POINT(H1_EV_H1C_END, h1c->conn);
Christopher Faulet39a96ee2019-04-08 10:52:21 +02002678 if (!h1c->h1s || !h1c->conn || h1c->conn->ctx != h1c)
Christopher Faulet73c12072019-04-08 11:23:22 +02002679 h1_release(h1c);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002680}
2681
2682/*
2683 * Detach the stream from the connection and possibly release the connection.
2684 */
2685static void h1_detach(struct conn_stream *cs)
2686{
2687 struct h1s *h1s = cs->ctx;
2688 struct h1c *h1c;
Olivier Houchardf502aca2018-12-14 19:42:40 +01002689 struct session *sess;
Olivier Houchard8a786902018-12-15 16:05:40 +01002690 int is_not_first;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002691
Christopher Faulet6b81df72019-10-01 22:08:43 +02002692 TRACE_ENTER(H1_EV_STRM_END, h1s ? h1s->h1c->conn : NULL, h1s);
2693
Christopher Faulet51dbc942018-09-13 09:05:15 +02002694 cs->ctx = NULL;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002695 if (!h1s) {
2696 TRACE_LEAVE(H1_EV_STRM_END);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002697 return;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002698 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002699
Olivier Houchardf502aca2018-12-14 19:42:40 +01002700 sess = h1s->sess;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002701 h1c = h1s->h1c;
2702 h1s->cs = NULL;
2703
Christopher Faulet42849b02020-10-05 11:35:17 +02002704 sess->accept_date = date;
2705 sess->tv_accept = now;
2706 sess->t_handshake = 0;
2707 sess->t_idle = -1;
2708
Olivier Houchard8a786902018-12-15 16:05:40 +01002709 is_not_first = h1s->flags & H1S_F_NOT_FIRST;
2710 h1s_destroy(h1s);
2711
Christopher Faulet3ced1d12020-11-27 16:44:01 +01002712 if ((h1c->flags & (H1C_F_IS_BACK|H1C_F_ST_IDLE)) == (H1C_F_IS_BACK|H1C_F_ST_IDLE)) {
Christopher Fauletf1204b82019-07-19 14:51:06 +02002713 /* If there are any excess server data in the input buffer,
2714 * release it and close the connection ASAP (some data may
2715 * remain in the output buffer). This happens if a server sends
2716 * invalid responses. So in such case, we don't want to reuse
2717 * the connection
Christopher Faulet03627242019-07-19 11:34:08 +02002718 */
Christopher Fauletf1204b82019-07-19 14:51:06 +02002719 if (b_data(&h1c->ibuf)) {
2720 h1_release_buf(h1c, &h1c->ibuf);
Christopher Faulet3ced1d12020-11-27 16:44:01 +01002721 h1c->flags = (h1c->flags & ~H1C_F_ST_IDLE) | H1C_F_ST_SHUTDOWN;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002722 TRACE_DEVEL("remaining data on detach, kill connection", H1_EV_STRM_END|H1_EV_H1C_END);
Christopher Fauletf1204b82019-07-19 14:51:06 +02002723 goto release;
2724 }
Christopher Faulet03627242019-07-19 11:34:08 +02002725
Christopher Faulet08016ab2020-07-01 16:10:06 +02002726 if (h1c->conn->flags & CO_FL_PRIVATE) {
2727 /* Add the connection in the session server list, if not already done */
Olivier Houchard351411f2018-12-27 17:20:54 +01002728 if (!session_add_conn(sess, h1c->conn, h1c->conn->target)) {
2729 h1c->conn->owner = NULL;
Olivier Houchard2444aa52020-01-20 13:56:01 +01002730 h1c->conn->mux->destroy(h1c);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002731 goto end;
Olivier Houchard351411f2018-12-27 17:20:54 +01002732 }
Christopher Faulet08016ab2020-07-01 16:10:06 +02002733 /* Always idle at this step */
Olivier Houchard2444aa52020-01-20 13:56:01 +01002734 if (session_check_idle_conn(sess, h1c->conn)) {
Olivier Houcharda4d4fdf2018-12-14 19:27:06 +01002735 /* The connection got destroyed, let's leave */
Christopher Faulet6b81df72019-10-01 22:08:43 +02002736 TRACE_DEVEL("outgoing connection killed", H1_EV_STRM_END|H1_EV_H1C_END);
2737 goto end;
2738 }
Olivier Houcharda4d4fdf2018-12-14 19:27:06 +01002739 }
Christopher Faulet08016ab2020-07-01 16:10:06 +02002740 else {
Olivier Houchard2444aa52020-01-20 13:56:01 +01002741 if (h1c->conn->owner == sess)
2742 h1c->conn->owner = NULL;
Olivier Houchard3c49c1b2020-03-22 19:56:03 +01002743 h1c->conn->xprt->subscribe(h1c->conn, h1c->conn->xprt_ctx, SUB_RETRY_RECV, &h1c->wait_event);
Olivier Houcharddc2f2752020-02-13 19:12:07 +01002744 if (!srv_add_to_idle_list(objt_server(h1c->conn->target), h1c->conn, is_not_first)) {
Olivier Houchard2444aa52020-01-20 13:56:01 +01002745 /* The server doesn't want it, let's kill the connection right away */
2746 h1c->conn->mux->destroy(h1c);
2747 TRACE_DEVEL("outgoing connection killed", H1_EV_STRM_END|H1_EV_H1C_END);
2748 goto end;
Christopher Faulet9400a392018-11-23 23:10:39 +01002749 }
Olivier Houchard199d4fa2020-03-22 23:25:51 +01002750 /* At this point, the connection has been added to the
2751 * server idle list, so another thread may already have
2752 * hijacked it, so we can't do anything with it.
2753 */
Olivier Houchard2444aa52020-01-20 13:56:01 +01002754 return;
Christopher Faulet9400a392018-11-23 23:10:39 +01002755 }
2756 }
2757
Christopher Fauletf1204b82019-07-19 14:51:06 +02002758 release:
Christopher Faulet3ac0f432019-06-28 17:41:42 +02002759 /* We don't want to close right now unless the connection is in error or shut down for writes */
Christopher Faulet3ced1d12020-11-27 16:44:01 +01002760 if ((h1c->flags & H1C_F_ST_ERROR) ||
Christopher Faulet37243bc2019-07-11 15:40:25 +02002761 (h1c->conn->flags & (CO_FL_ERROR|CO_FL_SOCK_WR_SH)) ||
Christopher Faulet3ced1d12020-11-27 16:44:01 +01002762 ((h1c->flags & H1C_F_ST_SHUTDOWN) && !b_data(&h1c->obuf)) ||
Christopher Faulet6b81df72019-10-01 22:08:43 +02002763 !h1c->conn->owner) {
2764 TRACE_DEVEL("killing dead connection", H1_EV_STRM_END, h1c->conn);
Christopher Faulet73c12072019-04-08 11:23:22 +02002765 h1_release(h1c);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002766 }
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002767 else {
Christopher Faulet3ced1d12020-11-27 16:44:01 +01002768 if (h1c->flags & H1C_F_ST_IDLE) {
Christopher Faulet5d3c93c2020-10-05 17:14:28 +02002769 /* If we have a new request, process it immediately or
2770 * subscribe for reads waiting for new data
2771 */
2772 if (unlikely(b_data(&h1c->ibuf)))
2773 h1_process(h1c);
2774 else
2775 h1c->conn->xprt->subscribe(h1c->conn, h1c->conn->xprt_ctx, SUB_RETRY_RECV, &h1c->wait_event);
2776 }
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002777 h1_set_idle_expiration(h1c);
Christopher Faulet7a145d62020-08-05 11:31:16 +02002778 h1_refresh_timeout(h1c);
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002779 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02002780 end:
2781 TRACE_LEAVE(H1_EV_STRM_END);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002782}
2783
2784
2785static void h1_shutr(struct conn_stream *cs, enum cs_shr_mode mode)
2786{
2787 struct h1s *h1s = cs->ctx;
Christopher Faulet7f366362019-04-08 10:51:20 +02002788 struct h1c *h1c;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002789
2790 if (!h1s)
2791 return;
Christopher Faulet7f366362019-04-08 10:51:20 +02002792 h1c = h1s->h1c;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002793
Christopher Faulet6b81df72019-10-01 22:08:43 +02002794 TRACE_ENTER(H1_EV_STRM_SHUT, h1c->conn, h1s);
2795
Christopher Faulet3c82d8b2020-10-05 17:11:16 +02002796 if (cs->flags & CS_FL_SHR)
2797 goto end;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002798 if (cs->flags & CS_FL_KILL_CONN) {
2799 TRACE_STATE("stream wants to kill the connection", H1_EV_STRM_SHUT, h1c->conn, h1s);
2800 goto do_shutr;
2801 }
2802 if (h1c->conn->flags & (CO_FL_ERROR | CO_FL_SOCK_RD_SH | CO_FL_SOCK_WR_SH)) {
2803 TRACE_STATE("shutdown on connection (error|rd_sh|wr_sh)", H1_EV_STRM_SHUT, h1c->conn, h1s);
Christopher Faulet7f366362019-04-08 10:51:20 +02002804 goto do_shutr;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002805 }
Christopher Faulet7f366362019-04-08 10:51:20 +02002806
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002807 if (h1s->flags & H1S_F_WANT_KAL) {
2808 TRACE_STATE("keep connection alive (want_kal)", H1_EV_STRM_SHUT, h1c->conn, h1s);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002809 goto end;
2810 }
Christopher Fauletf2824e62018-10-01 12:12:37 +02002811
Christopher Faulet7f366362019-04-08 10:51:20 +02002812 do_shutr:
Christopher Faulet51dbc942018-09-13 09:05:15 +02002813 /* NOTE: Be sure to handle abort (cf. h2_shutr) */
2814 if (cs->flags & CS_FL_SHR)
Christopher Faulet6b81df72019-10-01 22:08:43 +02002815 goto end;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002816 if (conn_xprt_ready(cs->conn) && cs->conn->xprt->shutr)
Olivier Houcharde179d0e2019-03-21 18:27:17 +01002817 cs->conn->xprt->shutr(cs->conn, cs->conn->xprt_ctx,
Christopher Faulet6b81df72019-10-01 22:08:43 +02002818 (mode == CS_SHR_DRAIN));
Christopher Faulet6b81df72019-10-01 22:08:43 +02002819 end:
2820 TRACE_LEAVE(H1_EV_STRM_SHUT, h1c->conn, h1s);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002821}
2822
2823static void h1_shutw(struct conn_stream *cs, enum cs_shw_mode mode)
2824{
2825 struct h1s *h1s = cs->ctx;
2826 struct h1c *h1c;
2827
2828 if (!h1s)
2829 return;
2830 h1c = h1s->h1c;
2831
Christopher Faulet6b81df72019-10-01 22:08:43 +02002832 TRACE_ENTER(H1_EV_STRM_SHUT, h1c->conn, h1s);
2833
Christopher Faulet3c82d8b2020-10-05 17:11:16 +02002834 if (cs->flags & CS_FL_SHW)
2835 goto end;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002836 if (cs->flags & CS_FL_KILL_CONN) {
2837 TRACE_STATE("stream wants to kill the connection", H1_EV_STRM_SHUT, h1c->conn, h1s);
Christopher Faulet7f366362019-04-08 10:51:20 +02002838 goto do_shutw;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002839 }
2840 if (h1c->conn->flags & (CO_FL_ERROR | CO_FL_SOCK_RD_SH | CO_FL_SOCK_WR_SH)) {
2841 TRACE_STATE("shutdown on connection (error|rd_sh|wr_sh)", H1_EV_STRM_SHUT, h1c->conn, h1s);
2842 goto do_shutw;
2843 }
Olivier Houchardd2e88c72018-12-19 15:55:23 +01002844
Christopher Fauletc4bfa592020-10-06 17:45:34 +02002845 if (((h1s->flags & H1S_F_WANT_KAL) && h1s->req.state == H1_MSG_DONE && h1s->res.state == H1_MSG_DONE)) {
2846 TRACE_STATE("keep connection alive (want_kal)", H1_EV_STRM_SHUT, h1c->conn, h1s);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002847 goto end;
2848 }
Christopher Fauletf2824e62018-10-01 12:12:37 +02002849
Christopher Faulet7f366362019-04-08 10:51:20 +02002850 do_shutw:
Christopher Faulet3ced1d12020-11-27 16:44:01 +01002851 h1c->flags |= H1C_F_ST_SHUTDOWN;
Christopher Faulet3c82d8b2020-10-05 17:11:16 +02002852 if (!b_data(&h1c->obuf))
2853 h1_shutw_conn(cs->conn, mode);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002854 end:
2855 TRACE_LEAVE(H1_EV_STRM_SHUT, h1c->conn, h1s);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002856}
2857
Christopher Faulet666a0c42019-01-08 11:12:04 +01002858static void h1_shutw_conn(struct connection *conn, enum cs_shw_mode mode)
Christopher Faulet51dbc942018-09-13 09:05:15 +02002859{
Willy Tarreau3d2ee552018-12-19 14:12:10 +01002860 struct h1c *h1c = conn->ctx;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002861
Christopher Faulet6b81df72019-10-01 22:08:43 +02002862 TRACE_ENTER(H1_EV_STRM_SHUT, conn, h1c->h1s);
Christopher Faulet666a0c42019-01-08 11:12:04 +01002863 conn_xprt_shutw(conn);
2864 conn_sock_shutw(conn, (mode == CS_SHW_NORMAL));
Christopher Faulet6b81df72019-10-01 22:08:43 +02002865 TRACE_LEAVE(H1_EV_STRM_SHUT, conn, h1c->h1s);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002866}
2867
Willy Tarreauee1a6fc2020-01-17 07:52:13 +01002868/* Called from the upper layer, to unsubscribe <es> from events <event_type>
2869 * The <es> pointer is not allowed to differ from the one passed to the
2870 * subscribe() call. It always returns zero.
2871 */
2872static int h1_unsubscribe(struct conn_stream *cs, int event_type, struct wait_event *es)
Christopher Faulet51dbc942018-09-13 09:05:15 +02002873{
Christopher Faulet51dbc942018-09-13 09:05:15 +02002874 struct h1s *h1s = cs->ctx;
2875
2876 if (!h1s)
2877 return 0;
2878
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002879 BUG_ON(event_type & ~(SUB_RETRY_SEND|SUB_RETRY_RECV));
Willy Tarreauee1a6fc2020-01-17 07:52:13 +01002880 BUG_ON(h1s->subs && h1s->subs != es);
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002881
Willy Tarreauee1a6fc2020-01-17 07:52:13 +01002882 es->events &= ~event_type;
2883 if (!es->events)
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002884 h1s->subs = NULL;
2885
2886 if (event_type & SUB_RETRY_RECV)
Christopher Faulet6b81df72019-10-01 22:08:43 +02002887 TRACE_DEVEL("unsubscribe(recv)", H1_EV_STRM_RECV, h1s->h1c->conn, h1s);
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002888
2889 if (event_type & SUB_RETRY_SEND)
Christopher Faulet6b81df72019-10-01 22:08:43 +02002890 TRACE_DEVEL("unsubscribe(send)", H1_EV_STRM_SEND, h1s->h1c->conn, h1s);
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002891
Christopher Faulet51dbc942018-09-13 09:05:15 +02002892 return 0;
2893}
2894
Willy Tarreauee1a6fc2020-01-17 07:52:13 +01002895/* Called from the upper layer, to subscribe <es> to events <event_type>. The
2896 * event subscriber <es> is not allowed to change from a previous call as long
2897 * as at least one event is still subscribed. The <event_type> must only be a
2898 * combination of SUB_RETRY_RECV and SUB_RETRY_SEND. It always returns 0, unless
2899 * the conn_stream <cs> was already detached, in which case it will return -1.
2900 */
2901static int h1_subscribe(struct conn_stream *cs, int event_type, struct wait_event *es)
Christopher Faulet51dbc942018-09-13 09:05:15 +02002902{
Christopher Faulet51dbc942018-09-13 09:05:15 +02002903 struct h1s *h1s = cs->ctx;
Christopher Faulet51bb1852019-09-04 10:22:34 +02002904 struct h1c *h1c;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002905
2906 if (!h1s)
2907 return -1;
2908
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002909 BUG_ON(event_type & ~(SUB_RETRY_SEND|SUB_RETRY_RECV));
Willy Tarreauee1a6fc2020-01-17 07:52:13 +01002910 BUG_ON(h1s->subs && h1s->subs != es);
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002911
Willy Tarreauee1a6fc2020-01-17 07:52:13 +01002912 es->events |= event_type;
2913 h1s->subs = es;
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002914
2915 if (event_type & SUB_RETRY_RECV)
Christopher Faulet6b81df72019-10-01 22:08:43 +02002916 TRACE_DEVEL("subscribe(recv)", H1_EV_STRM_RECV, h1s->h1c->conn, h1s);
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002917
2918
Christopher Faulet6b81df72019-10-01 22:08:43 +02002919 if (event_type & SUB_RETRY_SEND) {
2920 TRACE_DEVEL("subscribe(send)", H1_EV_STRM_SEND, h1s->h1c->conn, h1s);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002921 /*
2922 * If the conn_stream attempt to subscribe, and the
2923 * mux isn't subscribed to the connection, then it
2924 * probably means the connection wasn't established
2925 * yet, so we have to subscribe.
2926 */
2927 h1c = h1s->h1c;
2928 if (!(h1c->wait_event.events & SUB_RETRY_SEND))
2929 h1c->conn->xprt->subscribe(h1c->conn,
2930 h1c->conn->xprt_ctx,
2931 SUB_RETRY_SEND,
2932 &h1c->wait_event);
2933 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02002934 return 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002935}
2936
2937/* Called from the upper layer, to receive data */
2938static size_t h1_rcv_buf(struct conn_stream *cs, struct buffer *buf, size_t count, int flags)
2939{
2940 struct h1s *h1s = cs->ctx;
Christopher Faulet539e0292018-11-19 10:40:09 +01002941 struct h1c *h1c = h1s->h1c;
Christopher Faulet0a799aa2020-09-24 09:52:52 +02002942 struct h1m *h1m = (!(h1c->flags & H1C_F_IS_BACK) ? &h1s->req : &h1s->res);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002943 size_t ret = 0;
2944
Willy Tarreau022e5e52020-09-10 09:33:15 +02002945 TRACE_ENTER(H1_EV_STRM_RECV, h1c->conn, h1s, 0, (size_t[]){count});
Christopher Faulet539e0292018-11-19 10:40:09 +01002946 if (!(h1c->flags & H1C_F_IN_ALLOC))
Christopher Faulet30db3d72019-05-17 15:35:33 +02002947 ret = h1_process_input(h1c, buf, count);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002948 else
2949 TRACE_DEVEL("h1c ibuf not allocated", H1_EV_H1C_RECV|H1_EV_H1C_BLK, h1c->conn);
Christopher Faulet1be55f92018-10-02 15:59:23 +02002950
Christopher Faulete18777b2019-04-16 16:46:36 +02002951 if (flags & CO_RFL_BUF_FLUSH) {
Christopher Faulet2eaf3092020-07-03 14:51:15 +02002952 if (h1m->state == H1_MSG_TUNNEL || (h1m->state == H1_MSG_DATA && h1m->curr_len)) {
Christopher Fauletae635762020-09-21 11:47:16 +02002953 h1c->flags |= H1C_F_WANT_SPLICE;
2954 TRACE_STATE("Block xprt rcv_buf to flush stream's buffer (want_splice)", H1_EV_STRM_RECV, h1c->conn, h1s);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002955 }
Christopher Faulete18777b2019-04-16 16:46:36 +02002956 }
Olivier Houchard02bac852019-08-22 18:34:25 +02002957 else {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002958 if (h1m->state != H1_MSG_DONE && !(h1c->wait_event.events & SUB_RETRY_RECV))
Willy Tarreau2c1f37d2020-03-04 17:50:02 +01002959 h1c->conn->xprt->subscribe(h1c->conn, h1c->conn->xprt_ctx, SUB_RETRY_RECV, &h1c->wait_event);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002960 }
Willy Tarreau022e5e52020-09-10 09:33:15 +02002961 TRACE_LEAVE(H1_EV_STRM_RECV, h1c->conn, h1s, 0, (size_t[]){ret});
Christopher Faulet51dbc942018-09-13 09:05:15 +02002962 return ret;
2963}
2964
2965
2966/* Called from the upper layer, to send data */
2967static size_t h1_snd_buf(struct conn_stream *cs, struct buffer *buf, size_t count, int flags)
2968{
2969 struct h1s *h1s = cs->ctx;
2970 struct h1c *h1c;
Christopher Faulet5d37dac2018-11-22 10:58:42 +01002971 size_t total = 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002972
2973 if (!h1s)
Christopher Faulet5d37dac2018-11-22 10:58:42 +01002974 return 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002975 h1c = h1s->h1c;
Olivier Houchard305d5ab2019-07-24 18:07:06 +02002976
Willy Tarreau022e5e52020-09-10 09:33:15 +02002977 TRACE_ENTER(H1_EV_STRM_SEND, h1c->conn, h1s, 0, (size_t[]){count});
Christopher Faulet6b81df72019-10-01 22:08:43 +02002978
Olivier Houchard305d5ab2019-07-24 18:07:06 +02002979 /* If we're not connected yet, or we're waiting for a handshake, stop
2980 * now, as we don't want to remove everything from the channel buffer
2981 * before we're sure we can send it.
2982 */
Willy Tarreau911db9b2020-01-23 16:27:54 +01002983 if (h1c->conn->flags & CO_FL_WAIT_XPRT) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002984 TRACE_LEAVE(H1_EV_STRM_SEND, h1c->conn, h1s);
Christopher Faulet3b88b8d2018-10-26 17:36:03 +02002985 return 0;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002986 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002987
Christopher Faulet46230362019-10-17 16:04:20 +02002988 /* Inherit some flags from the upper layer */
2989 h1c->flags &= ~(H1C_F_CO_MSG_MORE|H1C_F_CO_STREAMER);
2990 if (flags & CO_SFL_MSG_MORE)
2991 h1c->flags |= H1C_F_CO_MSG_MORE;
2992 if (flags & CO_SFL_STREAMER)
2993 h1c->flags |= H1C_F_CO_STREAMER;
2994
Christopher Fauletc31872f2019-06-04 22:09:36 +02002995 while (count) {
Christopher Faulet5d37dac2018-11-22 10:58:42 +01002996 size_t ret = 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002997
Christopher Faulet5d37dac2018-11-22 10:58:42 +01002998 if (!(h1c->flags & (H1C_F_OUT_FULL|H1C_F_OUT_ALLOC)))
2999 ret = h1_process_output(h1c, buf, count);
Christopher Faulet6b81df72019-10-01 22:08:43 +02003000 else
3001 TRACE_DEVEL("h1c obuf not allocated", H1_EV_STRM_SEND|H1_EV_H1S_BLK, h1c->conn, h1s);
Olivier Houchardc89a42f2020-06-19 16:15:05 +02003002
3003 if ((count - ret) > 0)
3004 h1c->flags |= H1C_F_CO_MSG_MORE;
3005
Christopher Faulet5d37dac2018-11-22 10:58:42 +01003006 if (!ret)
3007 break;
3008 total += ret;
Christopher Fauletc31872f2019-06-04 22:09:36 +02003009 count -= ret;
Olivier Houchard68787ef2020-01-15 19:13:32 +01003010 if ((h1c->wait_event.events & SUB_RETRY_SEND) || !h1_send(h1c))
Christopher Faulet5d37dac2018-11-22 10:58:42 +01003011 break;
Christopher Faulet51dbc942018-09-13 09:05:15 +02003012 }
Christopher Faulet7a145d62020-08-05 11:31:16 +02003013 h1_refresh_timeout(h1c);
Willy Tarreau022e5e52020-09-10 09:33:15 +02003014 TRACE_LEAVE(H1_EV_STRM_SEND, h1c->conn, h1s, 0, (size_t[]){total});
Christopher Faulet5d37dac2018-11-22 10:58:42 +01003015 return total;
Christopher Faulet51dbc942018-09-13 09:05:15 +02003016}
3017
Willy Tarreaue5733232019-05-22 19:24:06 +02003018#if defined(USE_LINUX_SPLICE)
Christopher Faulet1be55f92018-10-02 15:59:23 +02003019/* Send and get, using splicing */
3020static int h1_rcv_pipe(struct conn_stream *cs, struct pipe *pipe, unsigned int count)
3021{
3022 struct h1s *h1s = cs->ctx;
Christopher Faulet0a799aa2020-09-24 09:52:52 +02003023 struct h1c *h1c = h1s->h1c;
3024 struct h1m *h1m = (!(h1c->flags & H1C_F_IS_BACK) ? &h1s->req : &h1s->res);
Christopher Faulet1be55f92018-10-02 15:59:23 +02003025 int ret = 0;
3026
Willy Tarreau022e5e52020-09-10 09:33:15 +02003027 TRACE_ENTER(H1_EV_STRM_RECV, cs->conn, h1s, 0, (size_t[]){count});
Christopher Faulet6b81df72019-10-01 22:08:43 +02003028
Christopher Faulet9fa40c42019-11-05 16:24:27 +01003029 if ((h1m->flags & H1_MF_CHNK) || (h1m->state != H1_MSG_DATA && h1m->state != H1_MSG_TUNNEL)) {
Christopher Faulet0a799aa2020-09-24 09:52:52 +02003030 h1c->flags &= ~H1C_F_WANT_SPLICE;
Christopher Fauletae635762020-09-21 11:47:16 +02003031 TRACE_STATE("Allow xprt rcv_buf on !(msg_data|msg_tunnel)", H1_EV_STRM_RECV, cs->conn, h1s);
Christopher Faulet0a799aa2020-09-24 09:52:52 +02003032 if (!(h1c->wait_event.events & SUB_RETRY_RECV)) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02003033 TRACE_STATE("restart receiving data, subscribing", H1_EV_STRM_RECV, cs->conn, h1s);
Christopher Faulet0a799aa2020-09-24 09:52:52 +02003034 cs->conn->xprt->subscribe(cs->conn, cs->conn->xprt_ctx, SUB_RETRY_RECV, &h1c->wait_event);
Christopher Faulet6b81df72019-10-01 22:08:43 +02003035 }
Christopher Faulete18777b2019-04-16 16:46:36 +02003036 goto end;
3037 }
3038
Christopher Faulet0a799aa2020-09-24 09:52:52 +02003039 if (!(h1c->flags & H1C_F_WANT_SPLICE)) {
3040 h1c->flags |= H1C_F_WANT_SPLICE;
Christopher Fauletae635762020-09-21 11:47:16 +02003041 TRACE_STATE("Block xprt rcv_buf to perform splicing", H1_EV_STRM_RECV, cs->conn, h1s);
3042 }
Willy Tarreaufbdf90a2019-06-03 13:42:54 +02003043 if (h1s_data_pending(h1s)) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02003044 TRACE_STATE("flush input buffer before splicing", H1_EV_STRM_RECV, cs->conn, h1s);
Christopher Faulet1be55f92018-10-02 15:59:23 +02003045 goto end;
Christopher Fauletd44ad5b2018-11-19 21:52:12 +01003046 }
3047
Christopher Faulet0a799aa2020-09-24 09:52:52 +02003048 if (!h1_recv_allowed(h1c)) {
Christopher Faulet0060be92020-07-03 15:02:25 +02003049 TRACE_DEVEL("leaving on !recv_allowed", H1_EV_STRM_RECV, cs->conn, h1s);
3050 goto end;
3051 }
3052
Christopher Faulet1be55f92018-10-02 15:59:23 +02003053 if (h1m->state == H1_MSG_DATA && count > h1m->curr_len)
3054 count = h1m->curr_len;
Olivier Houcharde179d0e2019-03-21 18:27:17 +01003055 ret = cs->conn->xprt->rcv_pipe(cs->conn, cs->conn->xprt_ctx, pipe, count);
Christopher Faulet1146f972019-05-29 14:35:24 +02003056 if (h1m->state == H1_MSG_DATA && ret >= 0) {
Christopher Faulet1be55f92018-10-02 15:59:23 +02003057 h1m->curr_len -= ret;
Christopher Faulet6b81df72019-10-01 22:08:43 +02003058 if (!h1m->curr_len) {
Christopher Faulet0a799aa2020-09-24 09:52:52 +02003059 h1c->flags &= ~H1C_F_WANT_SPLICE;
Christopher Fauletae635762020-09-21 11:47:16 +02003060 TRACE_STATE("Allow xprt rcv_buf on !curr_len", H1_EV_STRM_RECV, cs->conn, h1s);
Christopher Faulet6b81df72019-10-01 22:08:43 +02003061 }
Christopher Faulete18777b2019-04-16 16:46:36 +02003062 }
3063
Christopher Faulet1be55f92018-10-02 15:59:23 +02003064 end:
Christopher Faulet038ad812019-04-17 11:03:22 +02003065 if (conn_xprt_read0_pending(cs->conn)) {
Willy Tarreauc493c9c2019-06-03 14:18:22 +02003066 h1s->flags |= H1S_F_REOS;
Christopher Faulet0a799aa2020-09-24 09:52:52 +02003067 h1c->flags &= ~H1C_F_WANT_SPLICE;
Christopher Fauletae635762020-09-21 11:47:16 +02003068 TRACE_STATE("Allow xprt rcv_buf on read0", H1_EV_STRM_RECV, cs->conn, h1s);
Christopher Faulet038ad812019-04-17 11:03:22 +02003069 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02003070
Christopher Fauleta131a8f2020-07-07 10:56:40 +02003071 if ((h1s->flags & H1S_F_REOS) ||
3072 (h1m->state != H1_MSG_TUNNEL && h1m->state != H1_MSG_DATA) ||
Christopher Faulet27182292020-07-03 15:08:49 +02003073 (h1m->state == H1_MSG_DATA && !h1m->curr_len)) {
Christopher Faulet0a799aa2020-09-24 09:52:52 +02003074 TRACE_STATE("notify the mux can't use splicing anymore", H1_EV_STRM_RECV, h1c->conn, h1s);
Willy Tarreau17ccd1a2020-01-17 16:19:34 +01003075 cs->flags &= ~CS_FL_MAY_SPLICE;
Christopher Faulet27182292020-07-03 15:08:49 +02003076 }
Willy Tarreau17ccd1a2020-01-17 16:19:34 +01003077
Willy Tarreau022e5e52020-09-10 09:33:15 +02003078 TRACE_LEAVE(H1_EV_STRM_RECV, cs->conn, h1s, 0, (size_t[]){ret});
Christopher Faulet1be55f92018-10-02 15:59:23 +02003079 return ret;
Christopher Faulet1be55f92018-10-02 15:59:23 +02003080}
3081
3082static int h1_snd_pipe(struct conn_stream *cs, struct pipe *pipe)
3083{
3084 struct h1s *h1s = cs->ctx;
Christopher Faulet1be55f92018-10-02 15:59:23 +02003085 int ret = 0;
3086
Willy Tarreau022e5e52020-09-10 09:33:15 +02003087 TRACE_ENTER(H1_EV_STRM_SEND, cs->conn, h1s, 0, (size_t[]){pipe->data});
Christopher Faulet6b81df72019-10-01 22:08:43 +02003088
Christopher Faulet1be55f92018-10-02 15:59:23 +02003089 if (b_data(&h1s->h1c->obuf))
3090 goto end;
3091
Olivier Houcharde179d0e2019-03-21 18:27:17 +01003092 ret = cs->conn->xprt->snd_pipe(cs->conn, cs->conn->xprt_ctx, pipe);
Christopher Faulet1be55f92018-10-02 15:59:23 +02003093 end:
Christopher Fauletd44ad5b2018-11-19 21:52:12 +01003094 if (pipe->data) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02003095 if (!(h1s->h1c->wait_event.events & SUB_RETRY_SEND)) {
3096 TRACE_STATE("more data to send, subscribing", H1_EV_STRM_SEND, cs->conn, h1s);
Olivier Houcharde179d0e2019-03-21 18:27:17 +01003097 cs->conn->xprt->subscribe(cs->conn, cs->conn->xprt_ctx, SUB_RETRY_SEND, &h1s->h1c->wait_event);
Christopher Faulet6b81df72019-10-01 22:08:43 +02003098 }
Christopher Fauletd44ad5b2018-11-19 21:52:12 +01003099 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02003100
Willy Tarreau022e5e52020-09-10 09:33:15 +02003101 TRACE_LEAVE(H1_EV_STRM_SEND, cs->conn, h1s, 0, (size_t[]){ret});
Christopher Faulet1be55f92018-10-02 15:59:23 +02003102 return ret;
3103}
3104#endif
3105
Olivier Houchard9b8e11e2019-10-25 16:19:26 +02003106static int h1_ctl(struct connection *conn, enum mux_ctl_type mux_ctl, void *output)
3107{
Christopher Fauletc18fc232020-10-06 17:41:36 +02003108 const struct h1c *h1c = conn->ctx;
Olivier Houchard9b8e11e2019-10-25 16:19:26 +02003109 int ret = 0;
Christopher Fauletc18fc232020-10-06 17:41:36 +02003110
Olivier Houchard9b8e11e2019-10-25 16:19:26 +02003111 switch (mux_ctl) {
3112 case MUX_STATUS:
Willy Tarreau911db9b2020-01-23 16:27:54 +01003113 if (!(conn->flags & CO_FL_WAIT_XPRT))
Olivier Houchard9b8e11e2019-10-25 16:19:26 +02003114 ret |= MUX_STATUS_READY;
3115 return ret;
Christopher Faulet4c8ad842020-10-06 14:59:17 +02003116 case MUX_EXIT_STATUS:
Christopher Fauletc18fc232020-10-06 17:41:36 +02003117 ret = (h1c->errcode == 400 ? MUX_ES_INVALID_ERR :
3118 (h1c->errcode == 408 ? MUX_ES_TOUT_ERR :
3119 (h1c->errcode == 500 ? MUX_ES_INTERNAL_ERR :
3120 MUX_ES_SUCCESS)));
3121 return ret;
Olivier Houchard9b8e11e2019-10-25 16:19:26 +02003122 default:
3123 return -1;
3124 }
3125}
3126
Olivier Houcharda8f6b432018-12-21 15:20:29 +01003127/* for debugging with CLI's "show fd" command */
3128static void h1_show_fd(struct buffer *msg, struct connection *conn)
3129{
3130 struct h1c *h1c = conn->ctx;
3131 struct h1s *h1s = h1c->h1s;
3132
Christopher Fauletf376a312019-01-04 15:16:06 +01003133 chunk_appendf(msg, " h1c.flg=0x%x .sub=%d .ibuf=%u@%p+%u/%u .obuf=%u@%p+%u/%u",
3134 h1c->flags, h1c->wait_event.events,
Olivier Houcharda8f6b432018-12-21 15:20:29 +01003135 (unsigned int)b_data(&h1c->ibuf), b_orig(&h1c->ibuf),
3136 (unsigned int)b_head_ofs(&h1c->ibuf), (unsigned int)b_size(&h1c->ibuf),
3137 (unsigned int)b_data(&h1c->obuf), b_orig(&h1c->obuf),
3138 (unsigned int)b_head_ofs(&h1c->obuf), (unsigned int)b_size(&h1c->obuf));
3139
3140 if (h1s) {
3141 char *method;
3142
3143 if (h1s->meth < HTTP_METH_OTHER)
3144 method = http_known_methods[h1s->meth].ptr;
3145 else
3146 method = "UNKNOWN";
3147 chunk_appendf(msg, " h1s=%p h1s.flg=0x%x .req.state=%s .res.state=%s"
3148 " .meth=%s status=%d",
3149 h1s, h1s->flags,
3150 h1m_state_str(h1s->req.state),
3151 h1m_state_str(h1s->res.state), method, h1s->status);
3152 if (h1s->cs)
3153 chunk_appendf(msg, " .cs.flg=0x%08x .cs.data=%p",
3154 h1s->cs->flags, h1s->cs->data);
3155 }
Christopher Faulet98fbe952019-07-22 16:18:24 +02003156}
3157
3158
3159/* Add an entry in the headers map. Returns -1 on error and 0 on success. */
3160static int add_hdr_case_adjust(const char *from, const char *to, char **err)
3161{
3162 struct h1_hdr_entry *entry;
3163
3164 /* Be sure there is a non-empty <to> */
3165 if (!strlen(to)) {
3166 memprintf(err, "expect <to>");
3167 return -1;
3168 }
3169
3170 /* Be sure only the case differs between <from> and <to> */
3171 if (strcasecmp(from, to)) {
3172 memprintf(err, "<from> and <to> must not differ execpt the case");
3173 return -1;
3174 }
3175
3176 /* Be sure <from> does not already existsin the tree */
3177 if (ebis_lookup(&hdrs_map.map, from)) {
3178 memprintf(err, "duplicate entry '%s'", from);
3179 return -1;
3180 }
3181
3182 /* Create the entry and insert it in the tree */
3183 entry = malloc(sizeof(*entry));
3184 if (!entry) {
3185 memprintf(err, "out of memory");
3186 return -1;
3187 }
3188
3189 entry->node.key = strdup(from);
3190 entry->name.ptr = strdup(to);
3191 entry->name.len = strlen(to);
3192 if (!entry->node.key || !entry->name.ptr) {
3193 free(entry->node.key);
Tim Duesterhused526372020-03-05 17:56:33 +01003194 istfree(&entry->name);
Christopher Faulet98fbe952019-07-22 16:18:24 +02003195 free(entry);
3196 memprintf(err, "out of memory");
3197 return -1;
3198 }
3199 ebis_insert(&hdrs_map.map, &entry->node);
3200 return 0;
3201}
3202
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01003203/* Migrate the the connection to the current thread.
3204 * Return 0 if successful, non-zero otherwise.
3205 * Expected to be called with the old thread lock held.
3206 */
Olivier Houchard1662cdb2020-07-03 14:04:37 +02003207static int h1_takeover(struct connection *conn, int orig_tid)
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01003208{
3209 struct h1c *h1c = conn->ctx;
Willy Tarreau09e0d9e2020-07-01 16:39:33 +02003210 struct task *task;
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01003211
3212 if (fd_takeover(conn->handle.fd, conn) != 0)
3213 return -1;
Olivier Houcharda74bb7e2020-07-03 14:01:21 +02003214
3215 if (conn->xprt->takeover && conn->xprt->takeover(conn, conn->xprt_ctx, orig_tid) != 0) {
3216 /* We failed to takeover the xprt, even if the connection may
3217 * still be valid, flag it as error'd, as we have already
3218 * taken over the fd, and wake the tasklet, so that it will
3219 * destroy it.
3220 */
3221 conn->flags |= CO_FL_ERROR;
3222 tasklet_wakeup_on(h1c->wait_event.tasklet, orig_tid);
3223 return -1;
3224 }
3225
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01003226 if (h1c->wait_event.events)
3227 h1c->conn->xprt->unsubscribe(h1c->conn, h1c->conn->xprt_ctx,
3228 h1c->wait_event.events, &h1c->wait_event);
3229 /* To let the tasklet know it should free itself, and do nothing else,
3230 * set its context to NULL.
3231 */
3232 h1c->wait_event.tasklet->context = NULL;
Olivier Houchard1662cdb2020-07-03 14:04:37 +02003233 tasklet_wakeup_on(h1c->wait_event.tasklet, orig_tid);
Willy Tarreau09e0d9e2020-07-01 16:39:33 +02003234
3235 task = h1c->task;
3236 if (task) {
3237 task->context = NULL;
3238 h1c->task = NULL;
3239 __ha_barrier_store();
3240 task_kill(task);
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01003241
3242 h1c->task = task_new(tid_bit);
3243 if (!h1c->task) {
3244 h1_release(h1c);
3245 return -1;
3246 }
3247 h1c->task->process = h1_timeout_task;
3248 h1c->task->context = h1c;
3249 }
3250 h1c->wait_event.tasklet = tasklet_new();
3251 if (!h1c->wait_event.tasklet) {
3252 h1_release(h1c);
3253 return -1;
3254 }
3255 h1c->wait_event.tasklet->process = h1_io_cb;
3256 h1c->wait_event.tasklet->context = h1c;
3257 h1c->conn->xprt->subscribe(h1c->conn, h1c->conn->xprt_ctx,
3258 SUB_RETRY_RECV, &h1c->wait_event);
3259
3260 return 0;
3261}
3262
3263
Christopher Faulet98fbe952019-07-22 16:18:24 +02003264static void h1_hdeaders_case_adjust_deinit()
3265{
3266 struct ebpt_node *node, *next;
3267 struct h1_hdr_entry *entry;
3268
3269 node = ebpt_first(&hdrs_map.map);
3270 while (node) {
3271 next = ebpt_next(node);
3272 ebpt_delete(node);
3273 entry = container_of(node, struct h1_hdr_entry, node);
3274 free(entry->node.key);
Tim Duesterhused526372020-03-05 17:56:33 +01003275 istfree(&entry->name);
Christopher Faulet98fbe952019-07-22 16:18:24 +02003276 free(entry);
3277 node = next;
3278 }
3279 free(hdrs_map.name);
Olivier Houcharda8f6b432018-12-21 15:20:29 +01003280}
3281
Christopher Faulet98fbe952019-07-22 16:18:24 +02003282static int cfg_h1_headers_case_adjust_postparser()
3283{
3284 FILE *file = NULL;
3285 char *c, *key_beg, *key_end, *value_beg, *value_end;
3286 char *err;
3287 int rc, line = 0, err_code = 0;
3288
3289 if (!hdrs_map.name)
3290 goto end;
3291
3292 file = fopen(hdrs_map.name, "r");
3293 if (!file) {
3294 ha_alert("config : h1-outgoing-headers-case-adjust-file '%s': failed to open file.\n",
3295 hdrs_map.name);
3296 err_code |= ERR_ALERT | ERR_FATAL;
3297 goto end;
3298 }
3299
3300 /* now parse all lines. The file may contain only two header name per
3301 * line, separated by spaces. All heading and trailing spaces will be
3302 * ignored. Lines starting with a # are ignored.
3303 */
3304 while (fgets(trash.area, trash.size, file) != NULL) {
3305 line++;
3306 c = trash.area;
3307
3308 /* strip leading spaces and tabs */
3309 while (*c == ' ' || *c == '\t')
3310 c++;
3311
3312 /* ignore emptu lines, or lines beginning with a dash */
3313 if (*c == '#' || *c == '\0' || *c == '\r' || *c == '\n')
3314 continue;
3315
3316 /* look for the end of the key */
3317 key_beg = c;
3318 while (*c != '\0' && *c != ' ' && *c != '\t' && *c != '\n' && *c != '\r')
3319 c++;
3320 key_end = c;
3321
3322 /* strip middle spaces and tabs */
3323 while (*c == ' ' || *c == '\t')
3324 c++;
3325
3326 /* look for the end of the value, it is the end of the line */
3327 value_beg = c;
3328 while (*c && *c != '\n' && *c != '\r')
3329 c++;
3330 value_end = c;
3331
3332 /* trim possibly trailing spaces and tabs */
3333 while (value_end > value_beg && (value_end[-1] == ' ' || value_end[-1] == '\t'))
3334 value_end--;
3335
3336 /* set final \0 and check entries */
3337 *key_end = '\0';
3338 *value_end = '\0';
3339
3340 err = NULL;
3341 rc = add_hdr_case_adjust(key_beg, value_beg, &err);
3342 if (rc < 0) {
Christopher Faulet98fbe952019-07-22 16:18:24 +02003343 ha_alert("config : h1-outgoing-headers-case-adjust-file '%s' : %s at line %d.\n",
3344 hdrs_map.name, err, line);
3345 err_code |= ERR_ALERT | ERR_FATAL;
Christopher Fauletcac5c092019-07-30 16:51:42 +02003346 free(err);
Christopher Faulet98fbe952019-07-22 16:18:24 +02003347 goto end;
3348 }
3349 if (rc > 0) {
Christopher Faulet98fbe952019-07-22 16:18:24 +02003350 ha_warning("config : h1-outgoing-headers-case-adjust-file '%s' : %s at line %d.\n",
3351 hdrs_map.name, err, line);
3352 err_code |= ERR_WARN;
Christopher Fauletcac5c092019-07-30 16:51:42 +02003353 free(err);
Christopher Faulet98fbe952019-07-22 16:18:24 +02003354 }
3355 }
3356
3357 end:
3358 if (file)
3359 fclose(file);
3360 hap_register_post_deinit(h1_hdeaders_case_adjust_deinit);
3361 return err_code;
3362}
3363
3364
3365/* config parser for global "h1-outgoing-header-case-adjust" */
3366static int cfg_parse_h1_header_case_adjust(char **args, int section_type, struct proxy *curpx,
3367 struct proxy *defpx, const char *file, int line,
3368 char **err)
3369{
3370 if (too_many_args(2, args, err, NULL))
3371 return -1;
3372 if (!*(args[1]) || !*(args[2])) {
3373 memprintf(err, "'%s' expects <from> and <to> as argument.", args[0]);
3374 return -1;
3375 }
3376 return add_hdr_case_adjust(args[1], args[2], err);
3377}
3378
3379/* config parser for global "h1-outgoing-headers-case-adjust-file" */
3380static int cfg_parse_h1_headers_case_adjust_file(char **args, int section_type, struct proxy *curpx,
3381 struct proxy *defpx, const char *file, int line,
3382 char **err)
3383{
3384 if (too_many_args(1, args, err, NULL))
3385 return -1;
3386 if (!*(args[1])) {
3387 memprintf(err, "'%s' expects <file> as argument.", args[0]);
3388 return -1;
3389 }
3390 free(hdrs_map.name);
3391 hdrs_map.name = strdup(args[1]);
3392 return 0;
3393}
3394
3395
3396/* config keyword parsers */
3397static struct cfg_kw_list cfg_kws = {{ }, {
3398 { CFG_GLOBAL, "h1-case-adjust", cfg_parse_h1_header_case_adjust },
3399 { CFG_GLOBAL, "h1-case-adjust-file", cfg_parse_h1_headers_case_adjust_file },
3400 { 0, NULL, NULL },
3401 }
3402};
3403
3404INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws);
3405REGISTER_CONFIG_POSTPARSER("h1-headers-map", cfg_h1_headers_case_adjust_postparser);
3406
3407
Christopher Faulet51dbc942018-09-13 09:05:15 +02003408/****************************************/
Ilya Shipitsinc02a23f2020-05-06 00:53:22 +05003409/* MUX initialization and instantiation */
Christopher Faulet51dbc942018-09-13 09:05:15 +02003410/****************************************/
3411
3412/* The mux operations */
Willy Tarreauf77a1582019-01-10 10:00:08 +01003413static const struct mux_ops mux_h1_ops = {
Christopher Faulet51dbc942018-09-13 09:05:15 +02003414 .init = h1_init,
3415 .wake = h1_wake,
3416 .attach = h1_attach,
3417 .get_first_cs = h1_get_first_cs,
3418 .detach = h1_detach,
3419 .destroy = h1_destroy,
3420 .avail_streams = h1_avail_streams,
Willy Tarreau00f18a32019-01-26 12:19:01 +01003421 .used_streams = h1_used_streams,
Christopher Faulet51dbc942018-09-13 09:05:15 +02003422 .rcv_buf = h1_rcv_buf,
3423 .snd_buf = h1_snd_buf,
Willy Tarreaue5733232019-05-22 19:24:06 +02003424#if defined(USE_LINUX_SPLICE)
Christopher Faulet1be55f92018-10-02 15:59:23 +02003425 .rcv_pipe = h1_rcv_pipe,
3426 .snd_pipe = h1_snd_pipe,
3427#endif
Christopher Faulet51dbc942018-09-13 09:05:15 +02003428 .subscribe = h1_subscribe,
3429 .unsubscribe = h1_unsubscribe,
3430 .shutr = h1_shutr,
3431 .shutw = h1_shutw,
Olivier Houcharda8f6b432018-12-21 15:20:29 +01003432 .show_fd = h1_show_fd,
Olivier Houchard9a86fcb2018-12-11 16:47:14 +01003433 .reset = h1_reset,
Olivier Houchard9b8e11e2019-10-25 16:19:26 +02003434 .ctl = h1_ctl,
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01003435 .takeover = h1_takeover,
Christopher Faulet9f38f5a2019-04-03 09:53:32 +02003436 .flags = MX_FL_HTX,
Willy Tarreau0a7a4fb2019-05-22 11:36:54 +02003437 .name = "H1",
Christopher Faulet51dbc942018-09-13 09:05:15 +02003438};
3439
3440
3441/* this mux registers default HTX proto */
3442static struct mux_proto_list mux_proto_htx =
Christopher Fauletc985f6c2019-07-15 11:42:52 +02003443{ .token = IST(""), .mode = PROTO_MODE_HTTP, .side = PROTO_SIDE_BOTH, .mux = &mux_h1_ops };
Christopher Faulet51dbc942018-09-13 09:05:15 +02003444
Willy Tarreau0108d902018-11-25 19:14:37 +01003445INITCALL1(STG_REGISTER, register_mux_proto, &mux_proto_htx);
3446
Christopher Faulet51dbc942018-09-13 09:05:15 +02003447/*
3448 * Local variables:
3449 * c-indent-level: 8
3450 * c-basic-offset: 8
3451 * End:
3452 */