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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 Faulet7b109f22019-12-05 11:18:31 +010044#define H1C_F_IN_BUSY 0x00000040 /* mux is blocked on input waiting the other side */
Christopher Faulet539e0292018-11-19 10:40:09 +010045/* 0x00000040 - 0x00000800 unused */
Christopher Faulet51dbc942018-09-13 09:05:15 +020046
Christopher Faulet7b109f22019-12-05 11:18:31 +010047/* Flags indicating the connection state */
Christopher Faulet51dbc942018-09-13 09:05:15 +020048#define H1C_F_CS_ERROR 0x00001000 /* connection must be closed ASAP because an error occurred */
49#define H1C_F_CS_SHUTW_NOW 0x00002000 /* connection must be shut down for writes ASAP */
Christopher Faulet7b109f22019-12-05 11:18:31 +010050#define H1C_F_CS_SHUTDOWN 0x00004000 /* connection is shut down */
Christopher Fauletaaa67bc2019-12-05 10:23:37 +010051#define H1C_F_CS_IDLE 0x00008000 /* connection is idle and may be reused
52 * (exclusive to all H1C_F_CS flags and never set when an h1s is attached) */
Christopher Faulet51dbc942018-09-13 09:05:15 +020053
Christopher Fauletf2824e62018-10-01 12:12:37 +020054#define H1C_F_WAIT_NEXT_REQ 0x00010000 /* waiting for the next request to start, use keep-alive timeout */
Christopher Faulet0ef372a2019-04-08 10:57:20 +020055#define H1C_F_UPG_H2C 0x00020000 /* set if an upgrade to h2 should be done */
Christopher Faulet129817b2018-09-20 16:14:40 +020056
Christopher Faulet46230362019-10-17 16:04:20 +020057#define H1C_F_CO_MSG_MORE 0x00040000 /* set if CO_SFL_MSG_MORE must be set when calling xprt->snd_buf() */
58#define H1C_F_CO_STREAMER 0x00080000 /* set if CO_SFL_STREAMER must be set when calling xprt->snd_buf() */
59
Christopher Faulet51dbc942018-09-13 09:05:15 +020060/*
61 * H1 Stream flags (32 bits)
62 */
Christopher Faulet129817b2018-09-20 16:14:40 +020063#define H1S_F_NONE 0x00000000
64#define H1S_F_ERROR 0x00000001 /* An error occurred on the H1 stream */
Christopher Fauletf2824e62018-10-01 12:12:37 +020065#define H1S_F_REQ_ERROR 0x00000002 /* An error occurred during the request parsing/xfer */
66#define H1S_F_RES_ERROR 0x00000004 /* An error occurred during the response parsing/xfer */
Willy Tarreauc493c9c2019-06-03 14:18:22 +020067#define H1S_F_REOS 0x00000008 /* End of input stream seen even if not delivered yet */
Christopher Fauletf2824e62018-10-01 12:12:37 +020068#define H1S_F_WANT_KAL 0x00000010
69#define H1S_F_WANT_TUN 0x00000020
70#define H1S_F_WANT_CLO 0x00000040
71#define H1S_F_WANT_MSK 0x00000070
72#define H1S_F_NOT_FIRST 0x00000080 /* The H1 stream is not the first one */
Christopher Faulet539e0292018-11-19 10:40:09 +010073#define H1S_F_BUF_FLUSH 0x00000100 /* Flush input buffer and don't read more data */
Christopher Fauletd44ad5b2018-11-19 21:52:12 +010074#define H1S_F_SPLICED_DATA 0x00000200 /* Set when the kernel splicing is in used */
Christopher Faulet76014fd2019-12-10 11:47:22 +010075#define H1S_F_PARSING_DONE 0x00000400 /* Set when incoming message parsing is finished (EOM added) */
76/* 0x00000800 .. 0x00001000 unused */
Christopher Faulet72ba6cd2019-09-24 16:20:05 +020077#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 +020078#define H1S_F_HAVE_O_CONN 0x00004000 /* Set during output process to know connection mode was processed */
Christopher Faulet51dbc942018-09-13 09:05:15 +020079
80/* H1 connection descriptor */
Christopher Faulet51dbc942018-09-13 09:05:15 +020081struct h1c {
82 struct connection *conn;
83 struct proxy *px;
84 uint32_t flags; /* Connection flags: H1C_F_* */
85
86 struct buffer ibuf; /* Input buffer to store data before parsing */
87 struct buffer obuf; /* Output buffer to store data after reformatting */
88
89 struct buffer_wait buf_wait; /* Wait list for buffer allocation */
90 struct wait_event wait_event; /* To be used if we're waiting for I/Os */
91
92 struct h1s *h1s; /* H1 stream descriptor */
Christopher Fauletb8093cf2019-01-03 16:27:28 +010093 struct task *task; /* timeout management task */
94 int timeout; /* idle timeout duration in ticks */
95 int shut_timeout; /* idle timeout duration in ticks after stream shutdown */
Christopher Faulet51dbc942018-09-13 09:05:15 +020096};
97
98/* H1 stream descriptor */
99struct h1s {
100 struct h1c *h1c;
101 struct conn_stream *cs;
Christopher Fauletfeb11742018-11-29 15:12:34 +0100102 struct cs_info csinfo; /* CS info, only used for client connections */
103 uint32_t flags; /* Connection flags: H1S_F_* */
Christopher Faulet51dbc942018-09-13 09:05:15 +0200104
Willy Tarreau1b0d4d12020-01-16 11:03:19 +0100105 struct wait_event *subs; /* Address of the wait_event the conn_stream associated is waiting on */
Christopher Faulet129817b2018-09-20 16:14:40 +0200106
Olivier Houchardf502aca2018-12-14 19:42:40 +0100107 struct session *sess; /* Associated session */
Christopher Faulet129817b2018-09-20 16:14:40 +0200108 struct h1m req;
109 struct h1m res;
110
Ilya Shipitsin47d17182020-06-21 21:42:57 +0500111 enum http_meth_t meth; /* HTTP request method */
Christopher Faulet129817b2018-09-20 16:14:40 +0200112 uint16_t status; /* HTTP response status */
Christopher Faulet51dbc942018-09-13 09:05:15 +0200113};
114
Christopher Faulet98fbe952019-07-22 16:18:24 +0200115/* Map of headers used to convert outgoing headers */
116struct h1_hdrs_map {
117 char *name;
118 struct eb_root map;
119};
120
121/* An entry in a headers map */
122struct h1_hdr_entry {
123 struct ist name;
124 struct ebpt_node node;
125};
126
127/* Declare the headers map */
128static struct h1_hdrs_map hdrs_map = { .name = NULL, .map = EB_ROOT };
129
130
Christopher Faulet6b81df72019-10-01 22:08:43 +0200131/* trace source and events */
132static void h1_trace(enum trace_level level, uint64_t mask,
133 const struct trace_source *src,
134 const struct ist where, const struct ist func,
135 const void *a1, const void *a2, const void *a3, const void *a4);
136
137/* The event representation is split like this :
138 * h1c - internal H1 connection
139 * h1s - internal H1 stream
140 * strm - application layer
141 * rx - data receipt
142 * tx - data transmission
143 *
144 */
145static const struct trace_event h1_trace_events[] = {
146#define H1_EV_H1C_NEW (1ULL << 0)
147 { .mask = H1_EV_H1C_NEW, .name = "h1c_new", .desc = "new H1 connection" },
148#define H1_EV_H1C_RECV (1ULL << 1)
149 { .mask = H1_EV_H1C_RECV, .name = "h1c_recv", .desc = "Rx on H1 connection" },
150#define H1_EV_H1C_SEND (1ULL << 2)
151 { .mask = H1_EV_H1C_SEND, .name = "h1c_send", .desc = "Tx on H1 connection" },
152#define H1_EV_H1C_BLK (1ULL << 3)
153 { .mask = H1_EV_H1C_BLK, .name = "h1c_blk", .desc = "H1 connection blocked" },
154#define H1_EV_H1C_WAKE (1ULL << 4)
155 { .mask = H1_EV_H1C_WAKE, .name = "h1c_wake", .desc = "H1 connection woken up" },
156#define H1_EV_H1C_END (1ULL << 5)
157 { .mask = H1_EV_H1C_END, .name = "h1c_end", .desc = "H1 connection terminated" },
158#define H1_EV_H1C_ERR (1ULL << 6)
159 { .mask = H1_EV_H1C_ERR, .name = "h1c_err", .desc = "error on H1 connection" },
160
161#define H1_EV_RX_DATA (1ULL << 7)
162 { .mask = H1_EV_RX_DATA, .name = "rx_data", .desc = "receipt of any H1 data" },
163#define H1_EV_RX_EOI (1ULL << 8)
164 { .mask = H1_EV_RX_EOI, .name = "rx_eoi", .desc = "receipt of end of H1 input" },
165#define H1_EV_RX_HDRS (1ULL << 9)
166 { .mask = H1_EV_RX_HDRS, .name = "rx_headers", .desc = "receipt of H1 headers" },
167#define H1_EV_RX_BODY (1ULL << 10)
168 { .mask = H1_EV_RX_BODY, .name = "rx_body", .desc = "receipt of H1 body" },
169#define H1_EV_RX_TLRS (1ULL << 11)
170 { .mask = H1_EV_RX_TLRS, .name = "rx_trailerus", .desc = "receipt of H1 trailers" },
171
172#define H1_EV_TX_DATA (1ULL << 12)
173 { .mask = H1_EV_TX_DATA, .name = "tx_data", .desc = "transmission of any H1 data" },
174#define H1_EV_TX_EOI (1ULL << 13)
175 { .mask = H1_EV_TX_EOI, .name = "tx_eoi", .desc = "transmission of end of H1 input" },
176#define H1_EV_TX_HDRS (1ULL << 14)
177 { .mask = H1_EV_TX_HDRS, .name = "tx_headers", .desc = "transmission of all headers" },
178#define H1_EV_TX_BODY (1ULL << 15)
179 { .mask = H1_EV_TX_BODY, .name = "tx_body", .desc = "transmission of H1 body" },
180#define H1_EV_TX_TLRS (1ULL << 16)
181 { .mask = H1_EV_TX_TLRS, .name = "tx_trailerus", .desc = "transmission of H1 trailers" },
182
183#define H1_EV_H1S_NEW (1ULL << 17)
184 { .mask = H1_EV_H1S_NEW, .name = "h1s_new", .desc = "new H1 stream" },
185#define H1_EV_H1S_BLK (1ULL << 18)
186 { .mask = H1_EV_H1S_BLK, .name = "h1s_blk", .desc = "H1 stream blocked" },
187#define H1_EV_H1S_END (1ULL << 19)
188 { .mask = H1_EV_H1S_END, .name = "h1s_end", .desc = "H1 stream terminated" },
189#define H1_EV_H1S_ERR (1ULL << 20)
190 { .mask = H1_EV_H1S_ERR, .name = "h1s_err", .desc = "error on H1 stream" },
191
192#define H1_EV_STRM_NEW (1ULL << 21)
193 { .mask = H1_EV_STRM_NEW, .name = "strm_new", .desc = "app-layer stream creation" },
194#define H1_EV_STRM_RECV (1ULL << 22)
195 { .mask = H1_EV_STRM_RECV, .name = "strm_recv", .desc = "receiving data for stream" },
196#define H1_EV_STRM_SEND (1ULL << 23)
197 { .mask = H1_EV_STRM_SEND, .name = "strm_send", .desc = "sending data for stream" },
198#define H1_EV_STRM_WAKE (1ULL << 24)
199 { .mask = H1_EV_STRM_WAKE, .name = "strm_wake", .desc = "stream woken up" },
200#define H1_EV_STRM_SHUT (1ULL << 25)
201 { .mask = H1_EV_STRM_SHUT, .name = "strm_shut", .desc = "stream shutdown" },
202#define H1_EV_STRM_END (1ULL << 26)
203 { .mask = H1_EV_STRM_END, .name = "strm_end", .desc = "detaching app-layer stream" },
204#define H1_EV_STRM_ERR (1ULL << 27)
205 { .mask = H1_EV_STRM_ERR, .name = "strm_err", .desc = "stream error" },
206
207 { }
208};
209
210static const struct name_desc h1_trace_lockon_args[4] = {
211 /* arg1 */ { /* already used by the connection */ },
212 /* arg2 */ { .name="h1s", .desc="H1 stream" },
213 /* arg3 */ { },
214 /* arg4 */ { }
215};
216
217static const struct name_desc h1_trace_decoding[] = {
218#define H1_VERB_CLEAN 1
219 { .name="clean", .desc="only user-friendly stuff, generally suitable for level \"user\"" },
220#define H1_VERB_MINIMAL 2
221 { .name="minimal", .desc="report only h1c/h1s state and flags, no real decoding" },
222#define H1_VERB_SIMPLE 3
223 { .name="simple", .desc="add request/response status line or htx info when available" },
224#define H1_VERB_ADVANCED 4
225 { .name="advanced", .desc="add header fields or frame decoding when available" },
226#define H1_VERB_COMPLETE 5
227 { .name="complete", .desc="add full data dump when available" },
228 { /* end */ }
229};
230
231static struct trace_source trace_h1 = {
232 .name = IST("h1"),
233 .desc = "HTTP/1 multiplexer",
234 .arg_def = TRC_ARG1_CONN, // TRACE()'s first argument is always a connection
235 .default_cb = h1_trace,
236 .known_events = h1_trace_events,
237 .lockon_args = h1_trace_lockon_args,
238 .decoding = h1_trace_decoding,
239 .report_events = ~0, // report everything by default
240};
241
242#define TRACE_SOURCE &trace_h1
243INITCALL1(STG_REGISTER, trace_register_source, TRACE_SOURCE);
244
Christopher Faulet51dbc942018-09-13 09:05:15 +0200245/* the h1c and h1s pools */
Willy Tarreau8ceae722018-11-26 11:58:30 +0100246DECLARE_STATIC_POOL(pool_head_h1c, "h1c", sizeof(struct h1c));
247DECLARE_STATIC_POOL(pool_head_h1s, "h1s", sizeof(struct h1s));
Christopher Faulet51dbc942018-09-13 09:05:15 +0200248
Christopher Faulet51dbc942018-09-13 09:05:15 +0200249static int h1_recv(struct h1c *h1c);
250static int h1_send(struct h1c *h1c);
251static int h1_process(struct h1c *h1c);
252static struct task *h1_io_cb(struct task *t, void *ctx, unsigned short state);
Christopher Faulet666a0c42019-01-08 11:12:04 +0100253static void h1_shutw_conn(struct connection *conn, enum cs_shw_mode mode);
Christopher Fauletb8093cf2019-01-03 16:27:28 +0100254static struct task *h1_timeout_task(struct task *t, void *context, unsigned short state);
Christopher Faulet660f6f32019-10-04 10:22:47 +0200255static void h1_wake_stream_for_recv(struct h1s *h1s);
256static void h1_wake_stream_for_send(struct h1s *h1s);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200257
Christopher Faulet6b81df72019-10-01 22:08:43 +0200258/* the H1 traces always expect that arg1, if non-null, is of type connection
259 * (from which we can derive h1c), that arg2, if non-null, is of type h1s, and
260 * that arg3, if non-null, is a htx for rx/tx headers.
261 */
262static void h1_trace(enum trace_level level, uint64_t mask, const struct trace_source *src,
263 const struct ist where, const struct ist func,
264 const void *a1, const void *a2, const void *a3, const void *a4)
265{
266 const struct connection *conn = a1;
267 const struct h1c *h1c = conn ? conn->ctx : NULL;
268 const struct h1s *h1s = a2;
269 const struct htx *htx = a3;
270 const size_t *val = a4;
271
272 if (!h1c)
273 h1c = (h1s ? h1s->h1c : NULL);
274
275 if (!h1c || src->verbosity < H1_VERB_CLEAN)
276 return;
277
278 /* Display frontend/backend info by default */
279 chunk_appendf(&trace_buf, " : [%c]", (conn_is_back(h1c->conn) ? 'B' : 'F'));
280
281 /* Display request and response states if h1s is defined */
282 if (h1s)
283 chunk_appendf(&trace_buf, " [%s, %s]",
284 h1m_state_str(h1s->req.state), h1m_state_str(h1s->res.state));
285
286 if (src->verbosity == H1_VERB_CLEAN)
287 return;
288
289 /* Display the value to the 4th argument (level > STATE) */
290 if (src->level > TRACE_LEVEL_STATE && val)
Willy Tarreaue18f53e2019-11-27 15:41:31 +0100291 chunk_appendf(&trace_buf, " - VAL=%lu", (long)*val);
Christopher Faulet6b81df72019-10-01 22:08:43 +0200292
293 /* Display status-line if possible (verbosity > MINIMAL) */
294 if (src->verbosity > H1_VERB_MINIMAL && htx && htx_nbblks(htx)) {
295 const struct htx_blk *blk = htx_get_head_blk(htx);
296 const struct htx_sl *sl = htx_get_blk_ptr(htx, blk);
297 enum htx_blk_type type = htx_get_blk_type(blk);
298
299 if (type == HTX_BLK_REQ_SL || type == HTX_BLK_RES_SL)
300 chunk_appendf(&trace_buf, " - \"%.*s %.*s %.*s\"",
301 HTX_SL_P1_LEN(sl), HTX_SL_P1_PTR(sl),
302 HTX_SL_P2_LEN(sl), HTX_SL_P2_PTR(sl),
303 HTX_SL_P3_LEN(sl), HTX_SL_P3_PTR(sl));
304 }
305
306 /* Display h1c info and, if defined, h1s info (pointer + flags) */
307 chunk_appendf(&trace_buf, " - h1c=%p(0x%08x)", h1c, h1c->flags);
308 if (h1s)
309 chunk_appendf(&trace_buf, " h1s=%p(0x%08x)", h1s, h1s->flags);
310
311 if (src->verbosity == H1_VERB_MINIMAL)
312 return;
313
314 /* Display input and output buffer info (level > USER & verbosity > SIMPLE) */
315 if (src->level > TRACE_LEVEL_USER) {
316 if (src->verbosity == H1_VERB_COMPLETE ||
317 (src->verbosity == H1_VERB_ADVANCED && (mask & (H1_EV_H1C_RECV|H1_EV_STRM_RECV))))
318 chunk_appendf(&trace_buf, " ibuf=%u@%p+%u/%u",
319 (unsigned int)b_data(&h1c->ibuf), b_orig(&h1c->ibuf),
320 (unsigned int)b_head_ofs(&h1c->ibuf), (unsigned int)b_size(&h1c->ibuf));
321 if (src->verbosity == H1_VERB_COMPLETE ||
322 (src->verbosity == H1_VERB_ADVANCED && (mask & (H1_EV_H1C_SEND|H1_EV_STRM_SEND))))
323 chunk_appendf(&trace_buf, " obuf=%u@%p+%u/%u",
324 (unsigned int)b_data(&h1c->obuf), b_orig(&h1c->obuf),
325 (unsigned int)b_head_ofs(&h1c->obuf), (unsigned int)b_size(&h1c->obuf));
326 }
327
328 /* Display htx info if defined (level > USER) */
329 if (src->level > TRACE_LEVEL_USER && htx) {
330 int full = 0;
331
332 /* Full htx info (level > STATE && verbosity > SIMPLE) */
333 if (src->level > TRACE_LEVEL_STATE) {
334 if (src->verbosity == H1_VERB_COMPLETE)
335 full = 1;
336 else if (src->verbosity == H1_VERB_ADVANCED && (mask & (H1_EV_RX_HDRS|H1_EV_TX_HDRS)))
337 full = 1;
338 }
339
340 chunk_memcat(&trace_buf, "\n\t", 2);
341 htx_dump(&trace_buf, htx, full);
342 }
343}
344
345
Christopher Faulet51dbc942018-09-13 09:05:15 +0200346/*****************************************************/
347/* functions below are for dynamic buffer management */
348/*****************************************************/
349/*
Christopher Faulet2545a0b2019-12-05 12:30:55 +0100350 * Indicates whether or not we may receive data. The rules are the following :
351 * - if an error or a shutdown for reads was detected on the connection we
352 must not attempt to receive
353 * - if the input buffer failed to be allocated or is full , we must not try
354 * to receive
355 * - if he input processing is busy waiting for the output side, we may
Ilya Shipitsinc02a23f2020-05-06 00:53:22 +0500356 * attempt to receive
Christopher Faulet51dbc942018-09-13 09:05:15 +0200357 * - otherwise must may not attempt to receive
358 */
359static inline int h1_recv_allowed(const struct h1c *h1c)
360{
Christopher Faulet2545a0b2019-12-05 12:30:55 +0100361 if (h1c->flags & H1C_F_CS_ERROR) {
362 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 +0200363 return 0;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200364 }
Christopher Faulet51dbc942018-09-13 09:05:15 +0200365
Christopher Faulet2545a0b2019-12-05 12:30:55 +0100366 if (h1c->conn->flags & (CO_FL_ERROR|CO_FL_SOCK_RD_SH)) {
Christopher Faulet6b81df72019-10-01 22:08:43 +0200367 TRACE_DEVEL("recv not allowed because of (error|read0) on connection", H1_EV_H1C_RECV|H1_EV_H1C_BLK, h1c->conn);
Christopher Fauletcf56b992018-12-11 16:12:31 +0100368 return 0;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200369 }
Christopher Fauletcf56b992018-12-11 16:12:31 +0100370
Christopher Fauletcb55f482018-12-10 11:56:47 +0100371 if (!(h1c->flags & (H1C_F_IN_ALLOC|H1C_F_IN_FULL|H1C_F_IN_BUSY)))
Christopher Faulet51dbc942018-09-13 09:05:15 +0200372 return 1;
373
Christopher Faulet6b81df72019-10-01 22:08:43 +0200374 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 +0200375 return 0;
376}
377
378/*
379 * Tries to grab a buffer and to re-enables processing on mux <target>. The h1
380 * flags are used to figure what buffer was requested. It returns 1 if the
381 * allocation succeeds, in which case the connection is woken up, or 0 if it's
382 * impossible to wake up and we prefer to be woken up later.
383 */
384static int h1_buf_available(void *target)
385{
386 struct h1c *h1c = target;
387
388 if ((h1c->flags & H1C_F_IN_ALLOC) && b_alloc_margin(&h1c->ibuf, 0)) {
Christopher Faulet6b81df72019-10-01 22:08:43 +0200389 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 +0200390 h1c->flags &= ~H1C_F_IN_ALLOC;
391 if (h1_recv_allowed(h1c))
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200392 tasklet_wakeup(h1c->wait_event.tasklet);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200393 return 1;
394 }
395
396 if ((h1c->flags & H1C_F_OUT_ALLOC) && b_alloc_margin(&h1c->obuf, 0)) {
Christopher Faulet6b81df72019-10-01 22:08:43 +0200397 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 +0200398 h1c->flags &= ~H1C_F_OUT_ALLOC;
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200399 tasklet_wakeup(h1c->wait_event.tasklet);
Christopher Faulet660f6f32019-10-04 10:22:47 +0200400 if (h1c->h1s)
401 h1_wake_stream_for_send(h1c->h1s);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200402 return 1;
403 }
404
Christopher Faulet51dbc942018-09-13 09:05:15 +0200405 return 0;
406}
407
408/*
409 * Allocate a buffer. If if fails, it adds the mux in buffer wait queue.
410 */
411static inline struct buffer *h1_get_buf(struct h1c *h1c, struct buffer *bptr)
412{
413 struct buffer *buf = NULL;
414
Willy Tarreau21046592020-02-26 10:39:36 +0100415 if (likely(!MT_LIST_ADDED(&h1c->buf_wait.list)) &&
Christopher Faulet51dbc942018-09-13 09:05:15 +0200416 unlikely((buf = b_alloc_margin(bptr, 0)) == NULL)) {
417 h1c->buf_wait.target = h1c;
418 h1c->buf_wait.wakeup_cb = h1_buf_available;
Willy Tarreau21046592020-02-26 10:39:36 +0100419 MT_LIST_ADDQ(&buffer_wq, &h1c->buf_wait.list);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200420 }
421 return buf;
422}
423
424/*
425 * Release a buffer, if any, and try to wake up entities waiting in the buffer
426 * wait queue.
427 */
428static inline void h1_release_buf(struct h1c *h1c, struct buffer *bptr)
429{
430 if (bptr->size) {
431 b_free(bptr);
432 offer_buffers(h1c->buf_wait.target, tasks_run_queue);
433 }
434}
435
Christopher Fauletaaa67bc2019-12-05 10:23:37 +0100436/* returns the number of streams in use on a connection to figure if it's idle
437 * or not. We rely on H1C_F_CS_IDLE to know if the connection is in-use or
438 * not. This flag is only set when no H1S is attached and when the previous
439 * stream, if any, was fully terminated without any error and in K/A mode.
Willy Tarreau00f18a32019-01-26 12:19:01 +0100440 */
441static int h1_used_streams(struct connection *conn)
Christopher Faulet51dbc942018-09-13 09:05:15 +0200442{
Willy Tarreau3d2ee552018-12-19 14:12:10 +0100443 struct h1c *h1c = conn->ctx;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200444
Christopher Fauletaaa67bc2019-12-05 10:23:37 +0100445 return ((h1c->flags & H1C_F_CS_IDLE) ? 0 : 1);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200446}
447
Willy Tarreau00f18a32019-01-26 12:19:01 +0100448/* returns the number of streams still available on a connection */
449static int h1_avail_streams(struct connection *conn)
Olivier Houchard8defe4b2018-12-02 01:31:17 +0100450{
Willy Tarreau00f18a32019-01-26 12:19:01 +0100451 return 1 - h1_used_streams(conn);
Olivier Houchard8defe4b2018-12-02 01:31:17 +0100452}
Christopher Faulet51dbc942018-09-13 09:05:15 +0200453
Willy Tarreau00f18a32019-01-26 12:19:01 +0100454
Christopher Faulet51dbc942018-09-13 09:05:15 +0200455/*****************************************************************/
456/* functions below are dedicated to the mux setup and management */
457/*****************************************************************/
Willy Tarreaufbdf90a2019-06-03 13:42:54 +0200458
459/* returns non-zero if there are input data pending for stream h1s. */
460static inline size_t h1s_data_pending(const struct h1s *h1s)
461{
462 const struct h1m *h1m;
463
464 h1m = conn_is_back(h1s->h1c->conn) ? &h1s->res : &h1s->req;
465 if (h1m->state == H1_MSG_DONE)
Christopher Faulet76014fd2019-12-10 11:47:22 +0100466 return !(h1s->flags & H1S_F_PARSING_DONE);
Willy Tarreaufbdf90a2019-06-03 13:42:54 +0200467
468 return b_data(&h1s->h1c->ibuf);
469}
470
Christopher Faulet47365272018-10-31 17:40:50 +0100471static struct conn_stream *h1s_new_cs(struct h1s *h1s)
472{
473 struct conn_stream *cs;
474
Christopher Faulet6b81df72019-10-01 22:08:43 +0200475 TRACE_ENTER(H1_EV_STRM_NEW, h1s->h1c->conn, h1s);
Christopher Faulet47365272018-10-31 17:40:50 +0100476 cs = cs_new(h1s->h1c->conn);
Christopher Faulet6b81df72019-10-01 22:08:43 +0200477 if (!cs) {
478 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 +0100479 goto err;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200480 }
Christopher Faulet47365272018-10-31 17:40:50 +0100481 h1s->cs = cs;
482 cs->ctx = h1s;
483
484 if (h1s->flags & H1S_F_NOT_FIRST)
485 cs->flags |= CS_FL_NOT_FIRST;
486
Willy Tarreau17ccd1a2020-01-17 16:19:34 +0100487 if (global.tune.options & GTUNE_USE_SPLICE)
488 cs->flags |= CS_FL_MAY_SPLICE;
489
Christopher Faulet6b81df72019-10-01 22:08:43 +0200490 if (stream_create_from_cs(cs) < 0) {
491 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 +0100492 goto err;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200493 }
494
495 TRACE_LEAVE(H1_EV_STRM_NEW, h1s->h1c->conn, h1s);
Christopher Faulet47365272018-10-31 17:40:50 +0100496 return cs;
497
498 err:
499 cs_free(cs);
500 h1s->cs = NULL;
501 return NULL;
502}
503
Olivier Houchardf502aca2018-12-14 19:42:40 +0100504static struct h1s *h1s_create(struct h1c *h1c, struct conn_stream *cs, struct session *sess)
Christopher Faulet51dbc942018-09-13 09:05:15 +0200505{
506 struct h1s *h1s;
507
Christopher Faulet6b81df72019-10-01 22:08:43 +0200508 TRACE_ENTER(H1_EV_H1S_NEW, h1c->conn);
509
Christopher Faulet51dbc942018-09-13 09:05:15 +0200510 h1s = pool_alloc(pool_head_h1s);
511 if (!h1s)
Christopher Faulet47365272018-10-31 17:40:50 +0100512 goto fail;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200513
514 h1s->h1c = h1c;
515 h1c->h1s = h1s;
516
Olivier Houchardf502aca2018-12-14 19:42:40 +0100517 h1s->sess = sess;
518
Christopher Faulet51dbc942018-09-13 09:05:15 +0200519 h1s->cs = NULL;
Christopher Fauletb992af02019-03-28 15:42:24 +0100520 h1s->flags = H1S_F_WANT_KAL;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200521
Willy Tarreau1b0d4d12020-01-16 11:03:19 +0100522 h1s->subs = NULL;
Christopher Faulet129817b2018-09-20 16:14:40 +0200523
524 h1m_init_req(&h1s->req);
Christopher Fauletb992af02019-03-28 15:42:24 +0100525 h1s->req.flags |= (H1_MF_NO_PHDR|H1_MF_CLEAN_CONN_HDR);
Christopher Faulet9768c262018-10-22 09:34:31 +0200526
Christopher Faulet129817b2018-09-20 16:14:40 +0200527 h1m_init_res(&h1s->res);
Christopher Fauletb992af02019-03-28 15:42:24 +0100528 h1s->res.flags |= (H1_MF_NO_PHDR|H1_MF_CLEAN_CONN_HDR);
Christopher Faulet129817b2018-09-20 16:14:40 +0200529
530 h1s->status = 0;
531 h1s->meth = HTTP_METH_OTHER;
532
Christopher Faulet47365272018-10-31 17:40:50 +0100533 if (h1c->flags & H1C_F_WAIT_NEXT_REQ)
534 h1s->flags |= H1S_F_NOT_FIRST;
Christopher Fauletaaa67bc2019-12-05 10:23:37 +0100535 h1c->flags &= ~(H1C_F_CS_IDLE|H1C_F_WAIT_NEXT_REQ);
Christopher Faulet47365272018-10-31 17:40:50 +0100536
Christopher Faulet129817b2018-09-20 16:14:40 +0200537 if (!conn_is_back(h1c->conn)) {
538 if (h1c->px->options2 & PR_O2_REQBUG_OK)
539 h1s->req.err_pos = -1;
Christopher Faulete9b70722019-04-08 10:46:02 +0200540
541 /* For frontend connections we should always have a session */
542 if (!sess)
543 sess = h1c->conn->owner;
544
Dave Pirotte234740f2019-07-10 13:57:38 +0000545 /* Timers for subsequent sessions on the same HTTP 1.x connection
546 * measure from `now`, not from the connection accept time */
547 if (h1s->flags & H1S_F_NOT_FIRST) {
548 h1s->csinfo.create_date = date;
549 h1s->csinfo.tv_create = now;
550 h1s->csinfo.t_handshake = 0;
551 h1s->csinfo.t_idle = -1;
552 }
553 else {
554 h1s->csinfo.create_date = sess->accept_date;
555 h1s->csinfo.tv_create = sess->tv_accept;
556 h1s->csinfo.t_handshake = sess->t_handshake;
557 h1s->csinfo.t_idle = -1;
558 }
Christopher Faulet129817b2018-09-20 16:14:40 +0200559 }
560 else {
561 if (h1c->px->options2 & PR_O2_RSPBUG_OK)
562 h1s->res.err_pos = -1;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200563
Christopher Fauletfeb11742018-11-29 15:12:34 +0100564 h1s->csinfo.create_date = date;
565 h1s->csinfo.tv_create = now;
566 h1s->csinfo.t_handshake = 0;
567 h1s->csinfo.t_idle = -1;
Christopher Faulete9b70722019-04-08 10:46:02 +0200568 }
Christopher Fauletfeb11742018-11-29 15:12:34 +0100569
Christopher Faulete9b70722019-04-08 10:46:02 +0200570 /* If a conn_stream already exists, attach it to this H1S. Otherwise we
571 * create a new one.
572 */
573 if (cs) {
Christopher Fauletf2824e62018-10-01 12:12:37 +0200574 cs->ctx = h1s;
575 h1s->cs = cs;
576 }
Christopher Faulet47365272018-10-31 17:40:50 +0100577 else {
578 cs = h1s_new_cs(h1s);
579 if (!cs)
580 goto fail;
581 }
Christopher Faulet6b81df72019-10-01 22:08:43 +0200582 TRACE_LEAVE(H1_EV_H1S_NEW, h1c->conn, h1s);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200583 return h1s;
Christopher Faulet47365272018-10-31 17:40:50 +0100584
585 fail:
586 pool_free(pool_head_h1s, h1s);
Christopher Faulet6b81df72019-10-01 22:08:43 +0200587 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 +0100588 return NULL;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200589}
590
591static void h1s_destroy(struct h1s *h1s)
592{
Christopher Fauletf2824e62018-10-01 12:12:37 +0200593 if (h1s) {
594 struct h1c *h1c = h1s->h1c;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200595
Christopher Faulet6b81df72019-10-01 22:08:43 +0200596 TRACE_POINT(H1_EV_H1S_END, h1c->conn, h1s);
Christopher Fauletf2824e62018-10-01 12:12:37 +0200597 h1c->h1s = NULL;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200598
Willy Tarreau1b0d4d12020-01-16 11:03:19 +0100599 if (h1s->subs)
600 h1s->subs->events = 0;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200601
Christopher Fauletcb55f482018-12-10 11:56:47 +0100602 h1c->flags &= ~H1C_F_IN_BUSY;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200603 if (h1s->flags & (H1S_F_REQ_ERROR|H1S_F_RES_ERROR)) {
Christopher Faulet47365272018-10-31 17:40:50 +0100604 h1c->flags |= H1C_F_CS_ERROR;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200605 TRACE_STATE("h1s on error, set error on h1c", H1_EV_H1C_ERR, h1c->conn, h1s);
606 }
Christopher Fauletaaa67bc2019-12-05 10:23:37 +0100607
608 if (!(h1c->flags & (H1C_F_CS_ERROR|H1C_F_CS_SHUTW_NOW|H1C_F_CS_SHUTDOWN)) && /* No error/shutdown on h1c */
609 !(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 +0100610 (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 +0100611 h1s->req.state == H1_MSG_DONE && h1s->res.state == H1_MSG_DONE) { /* req/res in DONE state */
612 h1c->flags |= (H1C_F_CS_IDLE|H1C_F_WAIT_NEXT_REQ);
613 TRACE_STATE("set idle mode on h1c, waiting for the next request", H1_EV_H1C_ERR, h1c->conn, h1s);
614 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200615 pool_free(pool_head_h1s, h1s);
616 }
Christopher Faulet51dbc942018-09-13 09:05:15 +0200617}
618
Christopher Fauletfeb11742018-11-29 15:12:34 +0100619static const struct cs_info *h1_get_cs_info(struct conn_stream *cs)
620{
621 struct h1s *h1s = cs->ctx;
622
623 if (h1s && !conn_is_back(cs->conn))
624 return &h1s->csinfo;
625 return NULL;
626}
627
Christopher Faulet51dbc942018-09-13 09:05:15 +0200628/*
Christopher Faulet51f73eb2019-04-08 11:22:47 +0200629 * Initialize the mux once it's attached. It is expected that conn->ctx points
Ilya Shipitsin47d17182020-06-21 21:42:57 +0500630 * to the existing conn_stream (for outgoing connections or for incoming ones
631 * during a mux upgrade) or NULL (for incoming ones during the connection
Christopher Faulet51f73eb2019-04-08 11:22:47 +0200632 * establishment). <input> is always used as Input buffer and may contain
633 * data. It is the caller responsibility to not reuse it anymore. Returns < 0 on
634 * error.
Christopher Faulet51dbc942018-09-13 09:05:15 +0200635 */
Christopher Faulet51f73eb2019-04-08 11:22:47 +0200636static int h1_init(struct connection *conn, struct proxy *proxy, struct session *sess,
637 struct buffer *input)
Christopher Faulet51dbc942018-09-13 09:05:15 +0200638{
Christopher Faulet51dbc942018-09-13 09:05:15 +0200639 struct h1c *h1c;
Christopher Fauletb8093cf2019-01-03 16:27:28 +0100640 struct task *t = NULL;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200641 void *conn_ctx = conn->ctx;
642
643 TRACE_ENTER(H1_EV_H1C_NEW);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200644
645 h1c = pool_alloc(pool_head_h1c);
646 if (!h1c)
647 goto fail_h1c;
648 h1c->conn = conn;
649 h1c->px = proxy;
650
Christopher Fauletaaa67bc2019-12-05 10:23:37 +0100651 h1c->flags = H1C_F_CS_IDLE;
Christopher Faulet51f73eb2019-04-08 11:22:47 +0200652 h1c->ibuf = *input;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200653 h1c->obuf = BUF_NULL;
654 h1c->h1s = NULL;
Christopher Faulet51f73eb2019-04-08 11:22:47 +0200655 h1c->task = NULL;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200656
Willy Tarreau21046592020-02-26 10:39:36 +0100657 MT_LIST_INIT(&h1c->buf_wait.list);
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200658 h1c->wait_event.tasklet = tasklet_new();
659 if (!h1c->wait_event.tasklet)
Christopher Faulet51dbc942018-09-13 09:05:15 +0200660 goto fail;
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200661 h1c->wait_event.tasklet->process = h1_io_cb;
662 h1c->wait_event.tasklet->context = h1c;
Willy Tarreau4f6516d2018-12-19 13:59:17 +0100663 h1c->wait_event.events = 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +0200664
Christopher Faulete9b70722019-04-08 10:46:02 +0200665 if (conn_is_back(conn)) {
Christopher Fauletb8093cf2019-01-03 16:27:28 +0100666 h1c->shut_timeout = h1c->timeout = proxy->timeout.server;
667 if (tick_isset(proxy->timeout.serverfin))
668 h1c->shut_timeout = proxy->timeout.serverfin;
669 } else {
670 h1c->shut_timeout = h1c->timeout = proxy->timeout.client;
671 if (tick_isset(proxy->timeout.clientfin))
672 h1c->shut_timeout = proxy->timeout.clientfin;
673 }
674 if (tick_isset(h1c->timeout)) {
675 t = task_new(tid_bit);
676 if (!t)
677 goto fail;
678
679 h1c->task = t;
680 t->process = h1_timeout_task;
681 t->context = h1c;
682 t->expire = tick_add(now_ms, h1c->timeout);
683 }
684
Willy Tarreau3d2ee552018-12-19 14:12:10 +0100685 conn->ctx = h1c;
Christopher Faulet129817b2018-09-20 16:14:40 +0200686
Christopher Faulet6b81df72019-10-01 22:08:43 +0200687 /* Always Create a new H1S */
688 if (!h1s_create(h1c, conn_ctx, sess))
689 goto fail;
Christopher Fauletb8093cf2019-01-03 16:27:28 +0100690
691 if (t)
692 task_queue(t);
693
Christopher Faulet51dbc942018-09-13 09:05:15 +0200694 /* Try to read, if nothing is available yet we'll just subscribe */
Willy Tarreau2c1f37d2020-03-04 17:50:02 +0100695 h1c->conn->xprt->subscribe(h1c->conn, h1c->conn->xprt_ctx, SUB_RETRY_RECV, &h1c->wait_event);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200696
697 /* mux->wake will be called soon to complete the operation */
Christopher Faulet6b81df72019-10-01 22:08:43 +0200698 TRACE_LEAVE(H1_EV_H1C_NEW, conn, h1c->h1s);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200699 return 0;
700
701 fail:
Willy Tarreauf6562792019-05-07 19:05:35 +0200702 task_destroy(t);
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200703 if (h1c->wait_event.tasklet)
704 tasklet_free(h1c->wait_event.tasklet);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200705 pool_free(pool_head_h1c, h1c);
706 fail_h1c:
Christopher Faulet6b81df72019-10-01 22:08:43 +0200707 conn->ctx = conn_ctx; // restore saved context
708 TRACE_DEVEL("leaving in error", H1_EV_H1C_NEW|H1_EV_H1C_END|H1_EV_H1C_ERR);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200709 return -1;
710}
711
Christopher Faulet73c12072019-04-08 11:23:22 +0200712/* release function. This one should be called to free all resources allocated
713 * to the mux.
Christopher Faulet51dbc942018-09-13 09:05:15 +0200714 */
Christopher Faulet73c12072019-04-08 11:23:22 +0200715static void h1_release(struct h1c *h1c)
Christopher Faulet51dbc942018-09-13 09:05:15 +0200716{
Christopher Faulet61840e72019-04-15 09:33:32 +0200717 struct connection *conn = NULL;
Christopher Faulet39a96ee2019-04-08 10:52:21 +0200718
Christopher Faulet6b81df72019-10-01 22:08:43 +0200719 TRACE_POINT(H1_EV_H1C_END);
720
Christopher Faulet51dbc942018-09-13 09:05:15 +0200721 if (h1c) {
Christopher Faulet61840e72019-04-15 09:33:32 +0200722 /* The connection must be aattached to this mux to be released */
723 if (h1c->conn && h1c->conn->ctx == h1c)
724 conn = h1c->conn;
725
Christopher Faulet6b81df72019-10-01 22:08:43 +0200726 TRACE_DEVEL("freeing h1c", H1_EV_H1C_END, conn);
727
Christopher Faulet61840e72019-04-15 09:33:32 +0200728 if (conn && h1c->flags & H1C_F_UPG_H2C) {
Christopher Faulet6b81df72019-10-01 22:08:43 +0200729 TRACE_DEVEL("upgrading H1 to H2", H1_EV_H1C_END, conn);
Christopher Faulet0ef372a2019-04-08 10:57:20 +0200730 h1c->flags &= ~H1C_F_UPG_H2C;
Olivier Houchard2ab3dad2019-07-03 13:08:18 +0200731 /* Make sure we're no longer subscribed to anything */
732 if (h1c->wait_event.events)
733 conn->xprt->unsubscribe(conn, conn->xprt_ctx,
734 h1c->wait_event.events, &h1c->wait_event);
Christopher Fauletc985f6c2019-07-15 11:42:52 +0200735 if (conn_upgrade_mux_fe(conn, NULL, &h1c->ibuf, ist("h2"), PROTO_MODE_HTTP) != -1) {
Christopher Faulet0ef372a2019-04-08 10:57:20 +0200736 /* connection successfully upgraded to H2, this
737 * mux was already released */
738 return;
739 }
Christopher Faulet6b81df72019-10-01 22:08:43 +0200740 TRACE_DEVEL("h2 upgrade failed", H1_EV_H1C_END|H1_EV_H1C_ERR, conn);
Christopher Faulet0ef372a2019-04-08 10:57:20 +0200741 sess_log(conn->owner); /* Log if the upgrade failed */
742 }
743
Olivier Houchard45c44372019-06-11 14:06:23 +0200744
Willy Tarreau21046592020-02-26 10:39:36 +0100745 if (MT_LIST_ADDED(&h1c->buf_wait.list))
746 MT_LIST_DEL(&h1c->buf_wait.list);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200747
748 h1_release_buf(h1c, &h1c->ibuf);
749 h1_release_buf(h1c, &h1c->obuf);
750
Christopher Fauletb8093cf2019-01-03 16:27:28 +0100751 if (h1c->task) {
752 h1c->task->context = NULL;
753 task_wakeup(h1c->task, TASK_WOKEN_OTHER);
754 h1c->task = NULL;
755 }
756
Willy Tarreau3c39a7d2019-06-14 14:42:29 +0200757 if (h1c->wait_event.tasklet)
758 tasklet_free(h1c->wait_event.tasklet);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200759
Christopher Fauletf2824e62018-10-01 12:12:37 +0200760 h1s_destroy(h1c->h1s);
Olivier Houchard0e079372019-04-15 17:51:16 +0200761 if (conn && h1c->wait_event.events != 0)
Olivier Houcharde179d0e2019-03-21 18:27:17 +0100762 conn->xprt->unsubscribe(conn, conn->xprt_ctx, h1c->wait_event.events,
Olivier Houchard0e079372019-04-15 17:51:16 +0200763 &h1c->wait_event);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200764 pool_free(pool_head_h1c, h1c);
765 }
766
Christopher Faulet39a96ee2019-04-08 10:52:21 +0200767 if (conn) {
768 conn->mux = NULL;
769 conn->ctx = NULL;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200770 TRACE_DEVEL("freeing conn", H1_EV_H1C_END, conn);
Christopher Faulet51dbc942018-09-13 09:05:15 +0200771
Christopher Faulet39a96ee2019-04-08 10:52:21 +0200772 conn_stop_tracking(conn);
773 conn_full_close(conn);
774 if (conn->destroy_cb)
775 conn->destroy_cb(conn);
776 conn_free(conn);
777 }
Christopher Faulet51dbc942018-09-13 09:05:15 +0200778}
779
780/******************************************************/
781/* functions below are for the H1 protocol processing */
782/******************************************************/
Christopher Faulet9768c262018-10-22 09:34:31 +0200783/* Parse the request version and set H1_MF_VER_11 on <h1m> if the version is
784 * greater or equal to 1.1
Christopher Fauletf2824e62018-10-01 12:12:37 +0200785 */
Christopher Faulet570d1612018-11-26 11:13:57 +0100786static void h1_parse_req_vsn(struct h1m *h1m, const struct htx_sl *sl)
Christopher Fauletf2824e62018-10-01 12:12:37 +0200787{
Christopher Faulet570d1612018-11-26 11:13:57 +0100788 const char *p = HTX_SL_REQ_VPTR(sl);
Christopher Faulet9768c262018-10-22 09:34:31 +0200789
Christopher Faulet570d1612018-11-26 11:13:57 +0100790 if ((HTX_SL_REQ_VLEN(sl) == 8) &&
Christopher Faulet9768c262018-10-22 09:34:31 +0200791 (*(p + 5) > '1' ||
792 (*(p + 5) == '1' && *(p + 7) >= '1')))
793 h1m->flags |= H1_MF_VER_11;
794}
Christopher Fauletf2824e62018-10-01 12:12:37 +0200795
Christopher Faulet9768c262018-10-22 09:34:31 +0200796/* Parse the response version and set H1_MF_VER_11 on <h1m> if the version is
797 * greater or equal to 1.1
798 */
Christopher Faulet570d1612018-11-26 11:13:57 +0100799static void h1_parse_res_vsn(struct h1m *h1m, const struct htx_sl *sl)
Christopher Faulet9768c262018-10-22 09:34:31 +0200800{
Christopher Faulet570d1612018-11-26 11:13:57 +0100801 const char *p = HTX_SL_RES_VPTR(sl);
Christopher Fauletf2824e62018-10-01 12:12:37 +0200802
Christopher Faulet570d1612018-11-26 11:13:57 +0100803 if ((HTX_SL_RES_VLEN(sl) == 8) &&
Christopher Faulet9768c262018-10-22 09:34:31 +0200804 (*(p + 5) > '1' ||
805 (*(p + 5) == '1' && *(p + 7) >= '1')))
806 h1m->flags |= H1_MF_VER_11;
807}
Christopher Fauletf2824e62018-10-01 12:12:37 +0200808
Christopher Fauletf2824e62018-10-01 12:12:37 +0200809/* Deduce the connection mode of the client connection, depending on the
810 * configuration and the H1 message flags. This function is called twice, the
811 * first time when the request is parsed and the second time when the response
812 * is parsed.
813 */
814static void h1_set_cli_conn_mode(struct h1s *h1s, struct h1m *h1m)
815{
816 struct proxy *fe = h1s->h1c->px;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200817
818 if (h1m->flags & H1_MF_RESP) {
Christopher Fauletb992af02019-03-28 15:42:24 +0100819 /* Output direction: second pass */
Christopher Fauletf2824e62018-10-01 12:12:37 +0200820 if ((h1s->meth == HTTP_METH_CONNECT && h1s->status == 200) ||
Christopher Fauletb992af02019-03-28 15:42:24 +0100821 h1s->status == 101) {
822 /* Either we've established an explicit tunnel, or we're
823 * switching the protocol. In both cases, we're very unlikely to
824 * understand the next protocols. We have to switch to tunnel
825 * mode, so that we transfer the request and responses then let
826 * this protocol pass unmodified. When we later implement
827 * specific parsers for such protocols, we'll want to check the
828 * Upgrade header which contains information about that protocol
829 * for responses with status 101 (eg: see RFC2817 about TLS).
830 */
Christopher Fauletf2824e62018-10-01 12:12:37 +0200831 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_TUN;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200832 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 +0100833 }
834 else if (h1s->flags & H1S_F_WANT_KAL) {
835 /* By default the client is in KAL mode. CLOSE mode mean
836 * it is imposed by the client itself. So only change
837 * KAL mode here. */
838 if (!(h1m->flags & H1_MF_XFER_LEN) || (h1m->flags & H1_MF_CONN_CLO)) {
839 /* no length known or explicit close => close */
840 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200841 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 +0100842 }
843 else if (!(h1m->flags & H1_MF_CONN_KAL) &&
844 (fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_CLO) {
Ilya Shipitsinc02a23f2020-05-06 00:53:22 +0500845 /* no explicit keep-alive and option httpclose => close */
Christopher Fauletb992af02019-03-28 15:42:24 +0100846 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200847 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 +0100848 }
849 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200850 }
851 else {
Christopher Fauletb992af02019-03-28 15:42:24 +0100852 /* Input direction: first pass */
853 if (!(h1m->flags & (H1_MF_VER_11|H1_MF_CONN_KAL)) || h1m->flags & H1_MF_CONN_CLO) {
854 /* no explicit keep-alive in HTTP/1.0 or explicit close => close*/
Christopher Fauletf2824e62018-10-01 12:12:37 +0200855 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200856 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 +0100857 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200858 }
859
860 /* If KAL, check if the frontend is stopping. If yes, switch in CLO mode */
Christopher Faulet6b81df72019-10-01 22:08:43 +0200861 if (h1s->flags & H1S_F_WANT_KAL && fe->state == PR_STSTOPPED) {
Christopher Fauletf2824e62018-10-01 12:12:37 +0200862 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200863 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);
864 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200865}
866
867/* Deduce the connection mode of the client connection, depending on the
868 * configuration and the H1 message flags. This function is called twice, the
869 * first time when the request is parsed and the second time when the response
870 * is parsed.
871 */
872static void h1_set_srv_conn_mode(struct h1s *h1s, struct h1m *h1m)
873{
Olivier Houchardf502aca2018-12-14 19:42:40 +0100874 struct session *sess = h1s->sess;
Christopher Fauletb992af02019-03-28 15:42:24 +0100875 struct proxy *be = h1s->h1c->px;
Olivier Houchardf502aca2018-12-14 19:42:40 +0100876 int fe_flags = sess ? sess->fe->options : 0;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200877
Christopher Fauletf2824e62018-10-01 12:12:37 +0200878 if (h1m->flags & H1_MF_RESP) {
Christopher Fauletb992af02019-03-28 15:42:24 +0100879 /* Input direction: second pass */
Christopher Fauletf2824e62018-10-01 12:12:37 +0200880 if ((h1s->meth == HTTP_METH_CONNECT && h1s->status == 200) ||
Christopher Fauletb992af02019-03-28 15:42:24 +0100881 h1s->status == 101) {
882 /* Either we've established an explicit tunnel, or we're
883 * switching the protocol. In both cases, we're very unlikely to
884 * understand the next protocols. We have to switch to tunnel
885 * mode, so that we transfer the request and responses then let
886 * this protocol pass unmodified. When we later implement
887 * specific parsers for such protocols, we'll want to check the
888 * Upgrade header which contains information about that protocol
889 * for responses with status 101 (eg: see RFC2817 about TLS).
890 */
Christopher Fauletf2824e62018-10-01 12:12:37 +0200891 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_TUN;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200892 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 +0100893 }
894 else if (h1s->flags & H1S_F_WANT_KAL) {
895 /* By default the server is in KAL mode. CLOSE mode mean
896 * it is imposed by haproxy itself. So only change KAL
897 * mode here. */
898 if (!(h1m->flags & H1_MF_XFER_LEN) || h1m->flags & H1_MF_CONN_CLO ||
899 !(h1m->flags & (H1_MF_VER_11|H1_MF_CONN_KAL))){
900 /* no length known or explicit close or no explicit keep-alive in HTTP/1.0 => close */
901 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200902 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 +0100903 }
904 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200905 }
Christopher Faulet70033782018-12-05 13:50:11 +0100906 else {
Christopher Fauletb992af02019-03-28 15:42:24 +0100907 /* Output direction: first pass */
908 if (h1m->flags & H1_MF_CONN_CLO) {
909 /* explicit close => close */
Christopher Faulet70033782018-12-05 13:50:11 +0100910 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200911 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 +0100912 }
913 else if (!(h1m->flags & H1_MF_CONN_KAL) &&
914 ((fe_flags & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
915 (be->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
916 (fe_flags & PR_O_HTTP_MODE) == PR_O_HTTP_CLO ||
917 (be->options & PR_O_HTTP_MODE) == PR_O_HTTP_CLO)) {
918 /* no explicit keep-alive option httpclose/server-close => close */
919 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200920 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 +0100921 }
Christopher Faulet70033782018-12-05 13:50:11 +0100922 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200923
924 /* If KAL, check if the backend is stopping. If yes, switch in CLO mode */
Christopher Faulet6b81df72019-10-01 22:08:43 +0200925 if (h1s->flags & H1S_F_WANT_KAL && be->state == PR_STSTOPPED) {
Christopher Fauletf2824e62018-10-01 12:12:37 +0200926 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
Christopher Faulet6b81df72019-10-01 22:08:43 +0200927 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);
928 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200929}
930
Christopher Fauletb992af02019-03-28 15:42:24 +0100931static void h1_update_req_conn_value(struct h1s *h1s, struct h1m *h1m, struct ist *conn_val)
Christopher Fauletf2824e62018-10-01 12:12:37 +0200932{
933 struct proxy *px = h1s->h1c->px;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200934
935 /* Don't update "Connection:" header in TUNNEL mode or if "Upgrage"
936 * token is found
937 */
938 if (h1s->flags & H1S_F_WANT_TUN || h1m->flags & H1_MF_CONN_UPG)
Christopher Faulet9768c262018-10-22 09:34:31 +0200939 return;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200940
941 if (h1s->flags & H1S_F_WANT_KAL || px->options2 & PR_O2_FAKE_KA) {
Christopher Faulet6b81df72019-10-01 22:08:43 +0200942 if (!(h1m->flags & H1_MF_VER_11)) {
943 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 +0100944 *conn_val = ist("keep-alive");
Christopher Faulet6b81df72019-10-01 22:08:43 +0200945 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200946 }
947 else { /* H1S_F_WANT_CLO && !PR_O2_FAKE_KA */
Christopher Faulet6b81df72019-10-01 22:08:43 +0200948 if (h1m->flags & H1_MF_VER_11) {
949 TRACE_STATE("add \"Connection: close\"", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1s->h1c->conn, h1s);
Christopher Fauletb992af02019-03-28 15:42:24 +0100950 *conn_val = ist("close");
Christopher Faulet6b81df72019-10-01 22:08:43 +0200951 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200952 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200953}
954
Christopher Fauletb992af02019-03-28 15:42:24 +0100955static void h1_update_res_conn_value(struct h1s *h1s, struct h1m *h1m, struct ist *conn_val)
Christopher Fauletf2824e62018-10-01 12:12:37 +0200956{
Christopher Fauletf2824e62018-10-01 12:12:37 +0200957 /* Don't update "Connection:" header in TUNNEL mode or if "Upgrage"
958 * token is found
959 */
960 if (h1s->flags & H1S_F_WANT_TUN || h1m->flags & H1_MF_CONN_UPG)
Christopher Faulet9768c262018-10-22 09:34:31 +0200961 return;
Christopher Fauletf2824e62018-10-01 12:12:37 +0200962
963 if (h1s->flags & H1S_F_WANT_KAL) {
Christopher Fauletb992af02019-03-28 15:42:24 +0100964 if (!(h1m->flags & H1_MF_VER_11) ||
Christopher Faulet6b81df72019-10-01 22:08:43 +0200965 !((h1m->flags & h1s->req.flags) & H1_MF_VER_11)) {
966 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 +0100967 *conn_val = ist("keep-alive");
Christopher Faulet6b81df72019-10-01 22:08:43 +0200968 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200969 }
970 else { /* H1S_F_WANT_CLO */
Christopher Faulet6b81df72019-10-01 22:08:43 +0200971 if (h1m->flags & H1_MF_VER_11) {
972 TRACE_STATE("add \"Connection: close\"", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1s->h1c->conn, h1s);
Christopher Fauletb992af02019-03-28 15:42:24 +0100973 *conn_val = ist("close");
Christopher Faulet6b81df72019-10-01 22:08:43 +0200974 }
Christopher Fauletf2824e62018-10-01 12:12:37 +0200975 }
Christopher Faulet9768c262018-10-22 09:34:31 +0200976}
Christopher Fauletf2824e62018-10-01 12:12:37 +0200977
Christopher Fauletb992af02019-03-28 15:42:24 +0100978static void h1_process_input_conn_mode(struct h1s *h1s, struct h1m *h1m, struct htx *htx)
Christopher Faulet9768c262018-10-22 09:34:31 +0200979{
Christopher Fauletb992af02019-03-28 15:42:24 +0100980 if (!conn_is_back(h1s->h1c->conn))
Christopher Faulet9768c262018-10-22 09:34:31 +0200981 h1_set_cli_conn_mode(h1s, h1m);
Christopher Fauletb992af02019-03-28 15:42:24 +0100982 else
Christopher Faulet9768c262018-10-22 09:34:31 +0200983 h1_set_srv_conn_mode(h1s, h1m);
Christopher Fauletf2824e62018-10-01 12:12:37 +0200984}
985
Christopher Fauletb992af02019-03-28 15:42:24 +0100986static void h1_process_output_conn_mode(struct h1s *h1s, struct h1m *h1m, struct ist *conn_val)
987{
988 if (!conn_is_back(h1s->h1c->conn))
989 h1_set_cli_conn_mode(h1s, h1m);
990 else
991 h1_set_srv_conn_mode(h1s, h1m);
992
993 if (!(h1m->flags & H1_MF_RESP))
994 h1_update_req_conn_value(h1s, h1m, conn_val);
995 else
996 h1_update_res_conn_value(h1s, h1m, conn_val);
997}
Christopher Faulete44769b2018-11-29 23:01:45 +0100998
Christopher Faulet98fbe952019-07-22 16:18:24 +0200999/* Try to adjust the case of the message header name using the global map
1000 * <hdrs_map>.
1001 */
1002static void h1_adjust_case_outgoing_hdr(struct h1s *h1s, struct h1m *h1m, struct ist *name)
1003{
1004 struct ebpt_node *node;
1005 struct h1_hdr_entry *entry;
1006
1007 /* No entry in the map, do nothing */
1008 if (eb_is_empty(&hdrs_map.map))
1009 return;
1010
1011 /* No conversion fo the request headers */
1012 if (!(h1m->flags & H1_MF_RESP) && !(h1s->h1c->px->options2 & PR_O2_H1_ADJ_BUGSRV))
1013 return;
1014
1015 /* No conversion fo the response headers */
1016 if ((h1m->flags & H1_MF_RESP) && !(h1s->h1c->px->options2 & PR_O2_H1_ADJ_BUGCLI))
1017 return;
1018
1019 node = ebis_lookup_len(&hdrs_map.map, name->ptr, name->len);
1020 if (!node)
1021 return;
1022 entry = container_of(node, struct h1_hdr_entry, node);
1023 name->ptr = entry->name.ptr;
1024 name->len = entry->name.len;
1025}
1026
Christopher Faulete44769b2018-11-29 23:01:45 +01001027/* Append the description of what is present in error snapshot <es> into <out>.
1028 * The description must be small enough to always fit in a buffer. The output
1029 * buffer may be the trash so the trash must not be used inside this function.
1030 */
1031static void h1_show_error_snapshot(struct buffer *out, const struct error_snapshot *es)
1032{
1033 chunk_appendf(out,
Christopher Fauletaa75b3d2018-12-05 16:20:40 +01001034 " H1 connection flags 0x%08x, H1 stream flags 0x%08x\n"
1035 " H1 msg state %s(%d), H1 msg flags 0x%08x\n"
1036 " H1 chunk len %lld bytes, H1 body len %lld bytes :\n",
1037 es->ctx.h1.c_flags, es->ctx.h1.s_flags,
1038 h1m_state_str(es->ctx.h1.state), es->ctx.h1.state,
1039 es->ctx.h1.m_flags, es->ctx.h1.m_clen, es->ctx.h1.m_blen);
Christopher Faulete44769b2018-11-29 23:01:45 +01001040}
1041/*
1042 * Capture a bad request or response and archive it in the proxy's structure.
1043 * By default it tries to report the error position as h1m->err_pos. However if
1044 * this one is not set, it will then report h1m->next, which is the last known
1045 * parsing point. The function is able to deal with wrapping buffers. It always
1046 * displays buffers as a contiguous area starting at buf->p. The direction is
1047 * determined thanks to the h1m's flags.
1048 */
1049static void h1_capture_bad_message(struct h1c *h1c, struct h1s *h1s,
1050 struct h1m *h1m, struct buffer *buf)
1051{
1052 struct session *sess = h1c->conn->owner;
1053 struct proxy *proxy = h1c->px;
Olivier Houchardbdb00c52020-03-12 15:30:17 +01001054 struct proxy *other_end;
Christopher Faulete44769b2018-11-29 23:01:45 +01001055 union error_snapshot_ctx ctx;
1056
Olivier Houchardbdb00c52020-03-12 15:30:17 +01001057 if (h1s->cs && h1s->cs->data) {
1058 if (sess == NULL)
1059 sess = si_strm(h1s->cs->data)->sess;
1060 if (!(h1m->flags & H1_MF_RESP))
1061 other_end = si_strm(h1s->cs->data)->be;
1062 else
1063 other_end = sess->fe;
1064 } else
1065 other_end = NULL;
Christopher Faulete44769b2018-11-29 23:01:45 +01001066
1067 /* http-specific part now */
1068 ctx.h1.state = h1m->state;
1069 ctx.h1.c_flags = h1c->flags;
1070 ctx.h1.s_flags = h1s->flags;
1071 ctx.h1.m_flags = h1m->flags;
1072 ctx.h1.m_clen = h1m->curr_len;
1073 ctx.h1.m_blen = h1m->body_len;
1074
1075 proxy_capture_error(proxy, !!(h1m->flags & H1_MF_RESP), other_end,
1076 h1c->conn->target, sess, buf, 0, 0,
Christopher Fauletaa75b3d2018-12-05 16:20:40 +01001077 (h1m->err_pos >= 0) ? h1m->err_pos : h1m->next,
1078 &ctx, h1_show_error_snapshot);
Christopher Faulete44769b2018-11-29 23:01:45 +01001079}
1080
Christopher Fauletadb22202018-12-12 10:32:09 +01001081/* Emit the chunksize followed by a CRLF in front of data of the buffer
1082 * <buf>. It goes backwards and starts with the byte before the buffer's
1083 * head. The caller is responsible for ensuring there is enough room left before
1084 * the buffer's head for the string.
1085 */
1086static void h1_emit_chunk_size(struct buffer *buf, size_t chksz)
1087{
1088 char *beg, *end;
1089
1090 beg = end = b_head(buf);
1091 *--beg = '\n';
1092 *--beg = '\r';
1093 do {
1094 *--beg = hextab[chksz & 0xF];
1095 } while (chksz >>= 4);
1096 buf->head -= (end - beg);
1097 b_add(buf, end - beg);
1098}
1099
1100/* Emit a CRLF after the data of the buffer <buf>. The caller is responsible for
1101 * ensuring there is enough room left in the buffer for the string. */
1102static void h1_emit_chunk_crlf(struct buffer *buf)
1103{
1104 *(b_peek(buf, b_data(buf))) = '\r';
1105 *(b_peek(buf, b_data(buf) + 1)) = '\n';
1106 b_add(buf, 2);
1107}
1108
Christopher Faulet129817b2018-09-20 16:14:40 +02001109/*
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001110 * Switch the request to tunnel mode. This function must only be called for
Christopher Fauletf3158e92019-11-15 11:14:23 +01001111 * CONNECT requests. On the client side, if the response is not finished, the
1112 * mux is mark as busy on input.
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001113 */
1114static void h1_set_req_tunnel_mode(struct h1s *h1s)
1115{
1116 h1s->req.flags &= ~(H1_MF_XFER_LEN|H1_MF_CLEN|H1_MF_CHNK);
1117 h1s->req.state = H1_MSG_TUNNEL;
Christopher Fauletf3158e92019-11-15 11:14:23 +01001118 TRACE_STATE("switch H1 request in tunnel mode", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1s->h1c->conn, h1s);
1119
Christopher Faulet76014fd2019-12-10 11:47:22 +01001120 if (!conn_is_back(h1s->h1c->conn)) {
1121 h1s->flags &= ~H1S_F_PARSING_DONE;
1122 if (h1s->res.state < H1_MSG_DONE) {
1123 h1s->h1c->flags |= H1C_F_IN_BUSY;
1124 TRACE_STATE("switch h1c in busy mode", H1_EV_RX_DATA|H1_EV_H1C_BLK, h1s->h1c->conn, h1s);
1125 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02001126 }
Christopher Fauletf3158e92019-11-15 11:14:23 +01001127 else if (h1s->h1c->flags & H1C_F_IN_BUSY) {
1128 h1s->h1c->flags &= ~H1C_F_IN_BUSY;
1129 tasklet_wakeup(h1s->h1c->wait_event.tasklet);
1130 TRACE_STATE("h1c no more busy", H1_EV_RX_DATA|H1_EV_H1C_BLK|H1_EV_H1C_WAKE, h1s->h1c->conn, h1s);
1131 }
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001132}
1133
1134/*
1135 * Switch the response to tunnel mode. This function must only be called on
Ilya Shipitsinc02a23f2020-05-06 00:53:22 +05001136 * successful replies to CONNECT requests or on protocol switching. In this
Christopher Fauletf3158e92019-11-15 11:14:23 +01001137 * last case, this function takes care to switch the request to tunnel mode if
1138 * possible. On the server side, if the request is not finished, the mux is mark
1139 * as busy on input.
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001140 */
1141static void h1_set_res_tunnel_mode(struct h1s *h1s)
1142{
Christopher Fauletf3158e92019-11-15 11:14:23 +01001143
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001144 h1s->res.flags &= ~(H1_MF_XFER_LEN|H1_MF_CLEN|H1_MF_CHNK);
1145 h1s->res.state = H1_MSG_TUNNEL;
Christopher Fauletf3158e92019-11-15 11:14:23 +01001146 TRACE_STATE("switch H1 response in tunnel mode", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1s->h1c->conn, h1s);
1147
Christopher Faulet76014fd2019-12-10 11:47:22 +01001148 if (conn_is_back(h1s->h1c->conn)) {
1149 h1s->flags &= ~H1S_F_PARSING_DONE;
1150 /* On protocol switching, switch the request to tunnel mode if it is in
1151 * DONE state. Otherwise we will wait the end of the request to switch
1152 * it in tunnel mode.
1153 */
1154 if (h1s->req.state < H1_MSG_DONE) {
1155 h1s->h1c->flags |= H1C_F_IN_BUSY;
1156 TRACE_STATE("switch h1c in busy mode", H1_EV_RX_DATA|H1_EV_H1C_BLK, h1s->h1c->conn, h1s);
1157 }
1158 else if (h1s->status == 101 && h1s->req.state == H1_MSG_DONE) {
1159 h1s->req.flags &= ~(H1_MF_XFER_LEN|H1_MF_CLEN|H1_MF_CHNK);
1160 h1s->req.state = H1_MSG_TUNNEL;
1161 TRACE_STATE("switch H1 request in tunnel mode", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1s->h1c->conn, h1s);
1162 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02001163 }
Christopher Fauletf3158e92019-11-15 11:14:23 +01001164 else if (h1s->h1c->flags & H1C_F_IN_BUSY) {
1165 h1s->h1c->flags &= ~H1C_F_IN_BUSY;
1166 tasklet_wakeup(h1s->h1c->wait_event.tasklet);
1167 TRACE_STATE("h1c no more busy", H1_EV_RX_DATA|H1_EV_H1C_BLK|H1_EV_H1C_WAKE, h1s->h1c->conn, h1s);
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001168 }
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001169}
1170
1171/*
Christopher Faulet129817b2018-09-20 16:14:40 +02001172 * Parse HTTP/1 headers. It returns the number of bytes parsed if > 0, or 0 if
Christopher Fauletf2824e62018-10-01 12:12:37 +02001173 * it couldn't proceed. Parsing errors are reported by setting H1S_F_*_ERROR
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001174 * flag. If relies on the function http_parse_msg_hdrs() to do the parsing.
Christopher Faulet129817b2018-09-20 16:14:40 +02001175 */
Christopher Faulet9768c262018-10-22 09:34:31 +02001176static size_t h1_process_headers(struct h1s *h1s, struct h1m *h1m, struct htx *htx,
Christopher Fauletf2824e62018-10-01 12:12:37 +02001177 struct buffer *buf, size_t *ofs, size_t max)
Christopher Faulet129817b2018-09-20 16:14:40 +02001178{
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001179 union h1_sl h1sl;
Christopher Faulet129817b2018-09-20 16:14:40 +02001180 int ret = 0;
1181
Christopher Faulet6b81df72019-10-01 22:08:43 +02001182 TRACE_ENTER(H1_EV_RX_DATA|H1_EV_RX_HDRS, h1s->h1c->conn, h1s,, (size_t[]){max});
1183
Christopher Faulet89aed322020-06-02 17:33:56 +02001184 if (!(h1s->h1c->px->options2 & PR_O2_NO_H2_UPGRADE) && /* H2 upgrade supported by the proxy */
1185 !(h1s->flags & H1S_F_NOT_FIRST) && /* It is the first transaction */
1186 !(h1m->flags & H1_MF_RESP)) { /* It is a request */
Christopher Faulet0ef372a2019-04-08 10:57:20 +02001187 /* Try to match H2 preface before parsing the request headers. */
1188 ret = b_isteq(buf, 0, b_data(buf), ist(H2_CONN_PREFACE));
Christopher Faulet6b81df72019-10-01 22:08:43 +02001189 if (ret > 0) {
Christopher Faulet0ef372a2019-04-08 10:57:20 +02001190 goto h2c_upgrade;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001191 }
Christopher Faulet0ef372a2019-04-08 10:57:20 +02001192 }
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001193 else {
1194 if (h1s->meth == HTTP_METH_CONNECT)
1195 h1m->flags |= H1_MF_METH_CONNECT;
1196 if (h1s->meth == HTTP_METH_HEAD)
1197 h1m->flags |= H1_MF_METH_HEAD;
1198 }
Christopher Faulet0ef372a2019-04-08 10:57:20 +02001199
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001200 ret = h1_parse_msg_hdrs(h1m, &h1sl, htx, buf, *ofs, max);
1201 if (!ret) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001202 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 +02001203 if (htx->flags & HTX_FL_PARSING_ERROR) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001204 if (!(h1m->flags & H1_MF_RESP)) {
1205 h1s->flags |= H1S_F_REQ_ERROR;
1206 TRACE_USER("rejected H1 request", H1_EV_RX_DATA|H1_EV_RX_HDRS|H1_EV_H1S_ERR, h1s->h1c->conn, h1s);
1207 }
1208 else {
1209 h1s->flags |= H1S_F_RES_ERROR;
1210 TRACE_USER("rejected H1 response", H1_EV_RX_DATA|H1_EV_RX_HDRS|H1_EV_H1S_ERR, h1s->h1c->conn, h1s);
1211 }
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001212 h1s->cs->flags |= CS_FL_EOI;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001213 TRACE_STATE("parsing error", H1_EV_RX_DATA|H1_EV_RX_HDRS|H1_EV_H1S_ERR, h1s->h1c->conn, h1s);
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001214 h1_capture_bad_message(h1s->h1c, h1s, h1m, buf);
1215 }
Christopher Faulet129817b2018-09-20 16:14:40 +02001216 goto end;
1217 }
1218
Christopher Faulet486498c2019-10-11 14:22:00 +02001219 if (h1m->err_pos >= 0) {
1220 /* Maybe we found an error during the parsing while we were
1221 * configured not to block on that, so we have to capture it
1222 * now.
1223 */
1224 TRACE_STATE("Ignored parsing error", H1_EV_RX_DATA|H1_EV_RX_HDRS, h1s->h1c->conn, h1s);
1225 h1_capture_bad_message(h1s->h1c, h1s, h1m, buf);
1226 }
1227
Christopher Faulet129817b2018-09-20 16:14:40 +02001228 if (!(h1m->flags & H1_MF_RESP)) {
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001229 h1s->meth = h1sl.rq.meth;
Christopher Fauletf3158e92019-11-15 11:14:23 +01001230 if (h1m->state == H1_MSG_TUNNEL)
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001231 h1_set_req_tunnel_mode(h1s);
Christopher Faulet129817b2018-09-20 16:14:40 +02001232 }
1233 else {
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001234 h1s->status = h1sl.st.status;
Christopher Fauletf3158e92019-11-15 11:14:23 +01001235 if (h1m->state == H1_MSG_TUNNEL)
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001236 h1_set_res_tunnel_mode(h1s);
Christopher Fauletf1ba18d2018-11-26 21:37:08 +01001237 }
Christopher Fauletb992af02019-03-28 15:42:24 +01001238 h1_process_input_conn_mode(h1s, h1m, htx);
Christopher Faulet9768c262018-10-22 09:34:31 +02001239 *ofs += ret;
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001240
Christopher Faulet129817b2018-09-20 16:14:40 +02001241 end:
Christopher Faulet6b81df72019-10-01 22:08:43 +02001242 TRACE_LEAVE(H1_EV_RX_DATA|H1_EV_RX_HDRS, h1s->h1c->conn, h1s,, (size_t[]){ret});
Christopher Faulet129817b2018-09-20 16:14:40 +02001243 return ret;
Christopher Fauletf2824e62018-10-01 12:12:37 +02001244
Christopher Faulet0ef372a2019-04-08 10:57:20 +02001245 h2c_upgrade:
1246 h1s->h1c->flags |= H1C_F_UPG_H2C;
Christopher Faulet8e9e3ef2019-05-17 09:14:10 +02001247 h1s->cs->flags |= CS_FL_EOI;
Christopher Faulet0ef372a2019-04-08 10:57:20 +02001248 htx->flags |= HTX_FL_UPGRADE;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001249 TRACE_DEVEL("leaving on H2 update", H1_EV_RX_DATA|H1_EV_RX_HDRS|H1_EV_RX_EOI, h1s->h1c->conn, h1s);
1250 return 0;
Christopher Faulet129817b2018-09-20 16:14:40 +02001251}
1252
1253/*
Christopher Fauletf2824e62018-10-01 12:12:37 +02001254 * Parse HTTP/1 body. It returns the number of bytes parsed if > 0, or 0 if it
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001255 * couldn't proceed. Parsing errors are reported by setting H1S_F_*_ERROR flag.
1256 * If relies on the function http_parse_msg_data() to do the parsing.
Christopher Faulet129817b2018-09-20 16:14:40 +02001257 */
Christopher Fauletaf542632019-10-01 21:52:49 +02001258static size_t h1_process_data(struct h1s *h1s, struct h1m *h1m, struct htx **htx,
Christopher Fauletaa75b3d2018-12-05 16:20:40 +01001259 struct buffer *buf, size_t *ofs, size_t max,
Christopher Faulet30db3d72019-05-17 15:35:33 +02001260 struct buffer *htxbuf)
Christopher Faulet129817b2018-09-20 16:14:40 +02001261{
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001262 int ret;
Christopher Faulet30db3d72019-05-17 15:35:33 +02001263
Christopher Faulet6b81df72019-10-01 22:08:43 +02001264 TRACE_ENTER(H1_EV_RX_DATA|H1_EV_RX_BODY, h1s->h1c->conn, h1s,, (size_t[]){max});
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001265 ret = h1_parse_msg_data(h1m, htx, buf, *ofs, max, htxbuf);
Christopher Faulet02a02532019-11-15 09:36:28 +01001266 if (!ret) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001267 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 +01001268 if ((*htx)->flags & HTX_FL_PARSING_ERROR) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001269 if (!(h1m->flags & H1_MF_RESP)) {
1270 h1s->flags |= H1S_F_REQ_ERROR;
1271 TRACE_USER("rejected H1 request", H1_EV_RX_DATA|H1_EV_RX_BODY|H1_EV_H1S_ERR, h1s->h1c->conn, h1s);
1272 }
1273 else {
1274 h1s->flags |= H1S_F_RES_ERROR;
1275 TRACE_USER("rejected H1 response", H1_EV_RX_DATA|H1_EV_RX_BODY|H1_EV_H1S_ERR, h1s->h1c->conn, h1s);
1276 }
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001277 h1s->cs->flags |= CS_FL_EOI;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001278 TRACE_STATE("parsing error", H1_EV_RX_DATA|H1_EV_RX_BODY|H1_EV_H1S_ERR, h1s->h1c->conn, h1s);
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001279 h1_capture_bad_message(h1s->h1c, h1s, h1m, buf);
Christopher Faulet9768c262018-10-22 09:34:31 +02001280 }
Christopher Faulet02a02532019-11-15 09:36:28 +01001281 goto end;
Christopher Faulet129817b2018-09-20 16:14:40 +02001282 }
1283
Willy Tarreau17ccd1a2020-01-17 16:19:34 +01001284 if (h1m->state == H1_MSG_DATA && h1m->curr_len && h1s->cs)
1285 h1s->cs->flags |= CS_FL_MAY_SPLICE;
1286 else if (h1s->cs)
1287 h1s->cs->flags &= ~CS_FL_MAY_SPLICE;
1288
Christopher Faulet02a02532019-11-15 09:36:28 +01001289 *ofs += ret;
1290
1291 end:
Christopher Faulet6b81df72019-10-01 22:08:43 +02001292 TRACE_LEAVE(H1_EV_RX_DATA|H1_EV_RX_BODY, h1s->h1c->conn, h1s,, (size_t[]){ret});
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001293 return ret;
Christopher Faulet129817b2018-09-20 16:14:40 +02001294}
1295
1296/*
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001297 * Parse HTTP/1 trailers. It returns the number of bytes parsed if > 0, or 0 if
1298 * it couldn't proceed. Parsing errors are reported by setting H1S_F_*_ERROR
1299 * flag and filling h1s->err_pos and h1s->err_state fields. This functions is
1300 * responsible to update the parser state <h1m>.
1301 */
1302static size_t h1_process_trailers(struct h1s *h1s, struct h1m *h1m, struct htx *htx,
1303 struct buffer *buf, size_t *ofs, size_t max)
1304{
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001305 int ret;
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001306
Christopher Faulet6b81df72019-10-01 22:08:43 +02001307 TRACE_ENTER(H1_EV_RX_DATA|H1_EV_RX_TLRS, h1s->h1c->conn, h1s,, (size_t[]){max});
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001308 ret = h1_parse_msg_tlrs(h1m, htx, buf, *ofs, max);
Christopher Faulet02a02532019-11-15 09:36:28 +01001309 if (!ret) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001310 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 +01001311 if (htx->flags & HTX_FL_PARSING_ERROR) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001312 if (!(h1m->flags & H1_MF_RESP)) {
1313 h1s->flags |= H1S_F_REQ_ERROR;
1314 TRACE_USER("rejected H1 request", H1_EV_RX_DATA|H1_EV_RX_TLRS|H1_EV_H1S_ERR, h1s->h1c->conn, h1s);
1315 }
1316 else {
1317 h1s->flags |= H1S_F_RES_ERROR;
1318 TRACE_USER("rejected H1 response", H1_EV_RX_DATA|H1_EV_RX_TLRS|H1_EV_H1S_ERR, h1s->h1c->conn, h1s);
1319 }
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001320 h1s->cs->flags |= CS_FL_EOI;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001321 TRACE_STATE("parsing error", H1_EV_RX_DATA|H1_EV_RX_TLRS|H1_EV_H1S_ERR, h1s->h1c->conn, h1s);
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001322 h1_capture_bad_message(h1s->h1c, h1s, h1m, buf);
1323 }
Christopher Faulet02a02532019-11-15 09:36:28 +01001324 goto end;
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001325 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02001326
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001327 *ofs += ret;
Christopher Faulet02a02532019-11-15 09:36:28 +01001328
1329 end:
Christopher Faulet6b81df72019-10-01 22:08:43 +02001330 TRACE_LEAVE(H1_EV_RX_DATA|H1_EV_RX_TLRS, h1s->h1c->conn, h1s,, (size_t[]){ret});
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001331 return ret;
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001332}
1333
1334/*
Christopher Faulet76014fd2019-12-10 11:47:22 +01001335 * Add the EOM in the HTX message. It returns 1 on success or 0 if it couldn't
1336 * proceed. This functions is responsible to update the parser state <h1m>. It
1337 * also add the flag CS_FL_EOI on the CS.
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001338 */
Christopher Faulet76014fd2019-12-10 11:47:22 +01001339static size_t h1_process_eom(struct h1s *h1s, struct h1m *h1m, struct htx *htx,
1340 struct buffer *buf, size_t *ofs, size_t max)
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001341{
Christopher Faulet76014fd2019-12-10 11:47:22 +01001342 int ret;
1343
1344 TRACE_ENTER(H1_EV_RX_DATA|H1_EV_RX_EOI, h1s->h1c->conn, h1s,, (size_t[]){max});
1345 ret = h1_parse_msg_eom(h1m, htx, max);
1346 if (!ret) {
1347 TRACE_DEVEL("leaving on missing data or error", H1_EV_RX_DATA|H1_EV_RX_EOI, h1s->h1c->conn, h1s);
1348 if (htx->flags & HTX_FL_PARSING_ERROR) {
1349 if (!(h1m->flags & H1_MF_RESP)) {
1350 h1s->flags |= H1S_F_REQ_ERROR;
1351 TRACE_USER("rejected H1 request", H1_EV_RX_DATA|H1_EV_RX_EOI|H1_EV_H1S_ERR, h1s->h1c->conn, h1s);
1352 }
1353 else {
1354 h1s->flags |= H1S_F_RES_ERROR;
1355 TRACE_USER("rejected H1 response", H1_EV_RX_DATA|H1_EV_RX_EOI|H1_EV_H1S_ERR, h1s->h1c->conn, h1s);
1356 }
1357 h1s->cs->flags |= CS_FL_EOI;
1358 TRACE_STATE("parsing error", H1_EV_RX_DATA|H1_EV_RX_EOI|H1_EV_H1S_ERR, h1s->h1c->conn, h1s);
1359 h1_capture_bad_message(h1s->h1c, h1s, h1m, buf);
1360 }
1361 goto end;
Christopher Faulet4f0f88a2019-08-10 11:17:44 +02001362 }
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001363
Christopher Faulet76014fd2019-12-10 11:47:22 +01001364 h1s->flags |= H1S_F_PARSING_DONE;
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001365 h1s->cs->flags |= CS_FL_EOI;
Christopher Faulet76014fd2019-12-10 11:47:22 +01001366 end:
1367 TRACE_LEAVE(H1_EV_RX_DATA|H1_EV_RX_EOI, h1s->h1c->conn, h1s,, (size_t[]){ret});
1368 return ret;
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001369}
1370
1371/*
Christopher Faulet129817b2018-09-20 16:14:40 +02001372 * Process incoming data. It parses data and transfer them from h1c->ibuf into
Christopher Faulet539e0292018-11-19 10:40:09 +01001373 * <buf>. It returns the number of bytes parsed and transferred if > 0, or 0 if
1374 * it couldn't proceed.
Christopher Faulet129817b2018-09-20 16:14:40 +02001375 */
Christopher Faulet30db3d72019-05-17 15:35:33 +02001376static size_t h1_process_input(struct h1c *h1c, struct buffer *buf, size_t count)
Christopher Faulet51dbc942018-09-13 09:05:15 +02001377{
Christopher Faulet539e0292018-11-19 10:40:09 +01001378 struct h1s *h1s = h1c->h1s;
Christopher Faulet129817b2018-09-20 16:14:40 +02001379 struct h1m *h1m;
Christopher Faulet9768c262018-10-22 09:34:31 +02001380 struct htx *htx;
Christopher Faulet30db3d72019-05-17 15:35:33 +02001381 size_t ret, data;
Christopher Faulet129817b2018-09-20 16:14:40 +02001382 size_t total = 0;
Christopher Fauletf2824e62018-10-01 12:12:37 +02001383 int errflag;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001384
Christopher Faulet539e0292018-11-19 10:40:09 +01001385 htx = htx_from_buf(buf);
Christopher Faulet6b81df72019-10-01 22:08:43 +02001386 TRACE_ENTER(H1_EV_RX_DATA, h1c->conn, h1s, htx, (size_t[]){count});
Willy Tarreau3a6190f2018-12-16 08:29:56 +01001387
Christopher Fauletf2824e62018-10-01 12:12:37 +02001388 if (!conn_is_back(h1c->conn)) {
1389 h1m = &h1s->req;
1390 errflag = H1S_F_REQ_ERROR;
1391 }
1392 else {
1393 h1m = &h1s->res;
1394 errflag = H1S_F_RES_ERROR;
1395 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001396
Christopher Faulet74027762019-02-26 14:45:05 +01001397 data = htx->data;
Christopher Faulet0e54d542019-07-04 21:22:34 +02001398 if (h1s->flags & errflag)
1399 goto end;
1400
Christopher Fauletd44ad5b2018-11-19 21:52:12 +01001401 do {
Christopher Faulet30db3d72019-05-17 15:35:33 +02001402 size_t used = htx_used_space(htx);
1403
Christopher Faulet129817b2018-09-20 16:14:40 +02001404 if (h1m->state <= H1_MSG_LAST_LF) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001405 TRACE_PROTO("parsing message headers", H1_EV_RX_DATA|H1_EV_RX_HDRS, h1c->conn, h1s);
Christopher Faulet539e0292018-11-19 10:40:09 +01001406 ret = h1_process_headers(h1s, h1m, htx, &h1c->ibuf, &total, count);
Christopher Faulet129817b2018-09-20 16:14:40 +02001407 if (!ret)
1408 break;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001409
1410 TRACE_USER((!(h1m->flags & H1_MF_RESP) ? "rcvd H1 request headers" : "rcvd H1 response headers"),
1411 H1_EV_RX_DATA|H1_EV_RX_HDRS, h1c->conn, h1s, htx, (size_t[]){ret});
1412
Christopher Fauletb75b5ea2019-05-17 08:37:28 +02001413 if ((h1m->flags & H1_MF_RESP) &&
1414 h1s->status < 200 && (h1s->status == 100 || h1s->status >= 102)) {
1415 h1m_init_res(&h1s->res);
1416 h1m->flags |= (H1_MF_NO_PHDR|H1_MF_CLEAN_CONN_HDR);
Christopher Faulet6b81df72019-10-01 22:08:43 +02001417 TRACE_STATE("1xx response rcvd", H1_EV_RX_DATA|H1_EV_RX_HDRS, h1c->conn, h1s);
Christopher Fauletb75b5ea2019-05-17 08:37:28 +02001418 }
Christopher Faulet129817b2018-09-20 16:14:40 +02001419 }
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001420 else if (h1m->state < H1_MSG_TRAILERS) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001421 TRACE_PROTO("parsing message payload", H1_EV_RX_DATA|H1_EV_RX_BODY, h1c->conn, h1s);
Christopher Fauletaf542632019-10-01 21:52:49 +02001422 ret = h1_process_data(h1s, h1m, &htx, &h1c->ibuf, &total, count, buf);
Christopher Faulet76014fd2019-12-10 11:47:22 +01001423 if (!ret && h1m->state != H1_MSG_DONE)
Christopher Faulet129817b2018-09-20 16:14:40 +02001424 break;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001425
1426 TRACE_PROTO((!(h1m->flags & H1_MF_RESP) ? "rcvd H1 request payload data" : "rcvd H1 response payload data"),
1427 H1_EV_RX_DATA|H1_EV_RX_BODY, h1c->conn, h1s, htx, (size_t[]){ret});
Christopher Faulet129817b2018-09-20 16:14:40 +02001428 }
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001429 else if (h1m->state == H1_MSG_TRAILERS) {
Christopher Faulet76014fd2019-12-10 11:47:22 +01001430 TRACE_PROTO("parsing message trailers", H1_EV_RX_DATA|H1_EV_RX_TLRS, h1c->conn, h1s);
1431 ret = h1_process_trailers(h1s, h1m, htx, &h1c->ibuf, &total, count);
1432 if (!ret && h1m->state != H1_MSG_DONE)
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001433 break;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001434
Christopher Faulet76014fd2019-12-10 11:47:22 +01001435 TRACE_PROTO((!(h1m->flags & H1_MF_RESP) ? "rcvd H1 request trailers" : "rcvd H1 response trailers"),
1436 H1_EV_RX_DATA|H1_EV_RX_TLRS, h1c->conn, h1s, htx, (size_t[]){ret});
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001437 }
Christopher Fauletcb55f482018-12-10 11:56:47 +01001438 else if (h1m->state == H1_MSG_DONE) {
Christopher Faulet76014fd2019-12-10 11:47:22 +01001439 if (!(h1s->flags & H1S_F_PARSING_DONE)) {
1440 if (!h1_process_eom(h1s, h1m, htx, &h1c->ibuf, &total, count))
1441 break;
1442
1443 TRACE_USER((!(h1m->flags & H1_MF_RESP) ? "H1 request fully rcvd" : "H1 response fully rcvd"),
1444 H1_EV_RX_DATA|H1_EV_RX_EOI, h1c->conn, h1s, htx);
1445 }
1446
Christopher Fauletf3158e92019-11-15 11:14:23 +01001447 if (!(h1m->flags & H1_MF_RESP) && h1s->status == 101)
1448 h1_set_req_tunnel_mode(h1s);
1449 else if (h1s->req.state < H1_MSG_DONE || h1s->res.state < H1_MSG_DONE) {
Christopher Faulet2f320ee2019-04-16 20:26:53 +02001450 h1c->flags |= H1C_F_IN_BUSY;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001451 TRACE_STATE("switch h1c in busy mode", H1_EV_RX_DATA|H1_EV_H1C_BLK, h1c->conn, h1s);
1452 }
Christopher Fauletf2824e62018-10-01 12:12:37 +02001453 break;
Christopher Fauletcb55f482018-12-10 11:56:47 +01001454 }
Christopher Fauletf2824e62018-10-01 12:12:37 +02001455 else if (h1m->state == H1_MSG_TUNNEL) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001456 TRACE_PROTO("parsing tunneled data", H1_EV_RX_DATA, h1c->conn, h1s);
Christopher Fauletaf542632019-10-01 21:52:49 +02001457 ret = h1_process_data(h1s, h1m, &htx, &h1c->ibuf, &total, count, buf);
Christopher Faulet9768c262018-10-22 09:34:31 +02001458 if (!ret)
1459 break;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001460
1461 TRACE_PROTO((!(h1m->flags & H1_MF_RESP) ? "rcvd H1 request tunneled data" : "rcvd H1 response tunneled data"),
1462 H1_EV_RX_DATA|H1_EV_RX_EOI, h1c->conn, h1s, htx, (size_t[]){ret});
Christopher Fauletf2824e62018-10-01 12:12:37 +02001463 }
Christopher Faulet129817b2018-09-20 16:14:40 +02001464 else {
Christopher Fauletf2824e62018-10-01 12:12:37 +02001465 h1s->flags |= errflag;
Christopher Faulet129817b2018-09-20 16:14:40 +02001466 break;
1467 }
1468
Christopher Faulet30db3d72019-05-17 15:35:33 +02001469 count -= htx_used_space(htx) - used;
Christopher Faulet6b321922019-09-03 16:26:15 +02001470 } while (!(h1s->flags & errflag));
Christopher Faulet129817b2018-09-20 16:14:40 +02001471
Christopher Faulet6b81df72019-10-01 22:08:43 +02001472 if (h1s->flags & errflag) {
1473 TRACE_PROTO("parsing error", H1_EV_RX_DATA, h1c->conn, h1s);
Christopher Faulet47365272018-10-31 17:40:50 +01001474 goto parsing_err;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001475 }
Christopher Faulet129817b2018-09-20 16:14:40 +02001476
Christopher Faulet539e0292018-11-19 10:40:09 +01001477 b_del(&h1c->ibuf, total);
1478
1479 end:
Christopher Faulet27ba2dc2018-12-05 11:53:24 +01001480 htx_to_buf(htx, buf);
Christopher Faulet30db3d72019-05-17 15:35:33 +02001481 ret = htx->data - data;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001482 if ((h1c->flags & H1C_F_IN_FULL) && buf_room_for_htx_data(&h1c->ibuf)) {
Christopher Faulet539e0292018-11-19 10:40:09 +01001483 h1c->flags &= ~H1C_F_IN_FULL;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001484 TRACE_STATE("h1c ibuf not full anymore", H1_EV_RX_DATA|H1_EV_H1C_BLK|H1_EV_H1C_WAKE);
Willy Tarreau2c1f37d2020-03-04 17:50:02 +01001485 h1c->conn->xprt->subscribe(h1c->conn, h1c->conn->xprt_ctx, SUB_RETRY_RECV, &h1c->wait_event);
Christopher Faulet47365272018-10-31 17:40:50 +01001486 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02001487
Christopher Fauletcf56b992018-12-11 16:12:31 +01001488 h1s->cs->flags &= ~(CS_FL_RCV_MORE | CS_FL_WANT_ROOM);
1489
Christopher Fauletcdc90e92019-03-28 13:28:46 +01001490 if (!b_data(&h1c->ibuf))
Christopher Faulet539e0292018-11-19 10:40:09 +01001491 h1_release_buf(h1c, &h1c->ibuf);
Christopher Faulet6716cc22019-12-20 17:33:24 +01001492 if (h1s_data_pending(h1s) && !htx_is_empty(htx))
Christopher Fauletcf56b992018-12-11 16:12:31 +01001493 h1s->cs->flags |= CS_FL_RCV_MORE | CS_FL_WANT_ROOM;
Christopher Faulet76014fd2019-12-10 11:47:22 +01001494 else if (h1s->flags & H1S_F_REOS) {
Christopher Fauletf6ce9d62018-12-10 15:30:06 +01001495 h1s->cs->flags |= CS_FL_EOS;
Christopher Faulet466080d2019-11-15 09:50:22 +01001496 if (h1m->state == H1_MSG_TUNNEL)
1497 h1s->cs->flags |= CS_FL_EOI;
1498 else if (h1m->state > H1_MSG_LAST_LF && h1m->state < H1_MSG_DONE)
Christopher Fauletb8d2ee02019-02-25 15:29:51 +01001499 h1s->cs->flags |= CS_FL_ERROR;
Christopher Faulet539e0292018-11-19 10:40:09 +01001500 }
Christopher Fauletf6ce9d62018-12-10 15:30:06 +01001501
Christopher Faulet6b81df72019-10-01 22:08:43 +02001502 TRACE_LEAVE(H1_EV_RX_DATA, h1c->conn, h1s, htx, (size_t[]){ret});
Christopher Faulet30db3d72019-05-17 15:35:33 +02001503 return ret;
Christopher Faulet47365272018-10-31 17:40:50 +01001504
1505 parsing_err:
Christopher Faulet47365272018-10-31 17:40:50 +01001506 b_reset(&h1c->ibuf);
Christopher Faulet27ba2dc2018-12-05 11:53:24 +01001507 htx_to_buf(htx, buf);
Christopher Faulet6b81df72019-10-01 22:08:43 +02001508 TRACE_DEVEL("leaving on error", H1_EV_RX_DATA|H1_EV_STRM_ERR, h1c->conn, h1s);
Christopher Faulet9768c262018-10-22 09:34:31 +02001509 return 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001510}
1511
Christopher Faulet129817b2018-09-20 16:14:40 +02001512/*
1513 * Process outgoing data. It parses data and transfer them from the channel buffer into
1514 * h1c->obuf. It returns the number of bytes parsed and transferred if > 0, or
1515 * 0 if it couldn't proceed.
1516 */
Christopher Faulet51dbc942018-09-13 09:05:15 +02001517static size_t h1_process_output(struct h1c *h1c, struct buffer *buf, size_t count)
1518{
Christopher Faulet129817b2018-09-20 16:14:40 +02001519 struct h1s *h1s = h1c->h1s;
1520 struct h1m *h1m;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001521 struct htx *chn_htx = NULL;
Christopher Faulet9768c262018-10-22 09:34:31 +02001522 struct htx_blk *blk;
Christopher Fauletc2518a52019-06-25 21:41:02 +02001523 struct buffer tmp;
Christopher Faulet129817b2018-09-20 16:14:40 +02001524 size_t total = 0;
Christopher Fauletf2824e62018-10-01 12:12:37 +02001525 int errflag;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001526
Christopher Faulet47365272018-10-31 17:40:50 +01001527 if (!count)
1528 goto end;
Willy Tarreau37dd54d2018-12-15 14:48:31 +01001529
Christopher Faulet94b2c762019-05-24 15:28:57 +02001530 chn_htx = htxbuf(buf);
Christopher Faulet6b81df72019-10-01 22:08:43 +02001531 TRACE_ENTER(H1_EV_TX_DATA, h1c->conn, h1s, chn_htx, (size_t[]){count});
1532
Willy Tarreau37dd54d2018-12-15 14:48:31 +01001533 if (htx_is_empty(chn_htx))
1534 goto end;
Christopher Faulet9768c262018-10-22 09:34:31 +02001535
Christopher Faulet51dbc942018-09-13 09:05:15 +02001536 if (!h1_get_buf(h1c, &h1c->obuf)) {
1537 h1c->flags |= H1C_F_OUT_ALLOC;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001538 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 +02001539 goto end;
1540 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02001541
Christopher Fauletf2824e62018-10-01 12:12:37 +02001542 if (!conn_is_back(h1c->conn)) {
1543 h1m = &h1s->res;
1544 errflag = H1S_F_RES_ERROR;
1545 }
1546 else {
1547 h1m = &h1s->req;
1548 errflag = H1S_F_REQ_ERROR;
1549 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001550
Christopher Faulet0e54d542019-07-04 21:22:34 +02001551 if (h1s->flags & errflag)
1552 goto end;
1553
Willy Tarreau37dd54d2018-12-15 14:48:31 +01001554 /* the htx is non-empty thus has at least one block */
Willy Tarreau3815b222018-12-11 19:50:43 +01001555 blk = htx_get_head_blk(chn_htx);
Christopher Faulet9768c262018-10-22 09:34:31 +02001556
Willy Tarreau3815b222018-12-11 19:50:43 +01001557 /* Perform some optimizations to reduce the number of buffer copies.
1558 * First, if the mux's buffer is empty and the htx area contains
1559 * exactly one data block of the same size as the requested count,
1560 * then it's possible to simply swap the caller's buffer with the
1561 * mux's output buffer and adjust offsets and length to match the
1562 * entire DATA HTX block in the middle. In this case we perform a
1563 * true zero-copy operation from end-to-end. This is the situation
1564 * that happens all the time with large files. Second, if this is not
1565 * possible, but the mux's output buffer is empty, we still have an
1566 * opportunity to avoid the copy to the intermediary buffer, by making
1567 * the intermediary buffer's area point to the output buffer's area.
1568 * In this case we want to skip the HTX header to make sure that copies
1569 * remain aligned and that this operation remains possible all the
1570 * time. This goes for headers, data blocks and any data extracted from
1571 * the HTX blocks.
Willy Tarreauc5efa332018-12-05 11:19:27 +01001572 */
1573 if (!b_data(&h1c->obuf)) {
Christopher Faulet192c6a22019-06-11 16:32:24 +02001574 if (htx_nbblks(chn_htx) == 1 &&
Willy Tarreau37dd54d2018-12-15 14:48:31 +01001575 htx_get_blk_type(blk) == HTX_BLK_DATA &&
Willy Tarreau3815b222018-12-11 19:50:43 +01001576 htx_get_blk_value(chn_htx, blk).len == count) {
1577 void *old_area = h1c->obuf.area;
1578
Christopher Faulet6b81df72019-10-01 22:08:43 +02001579 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 +01001580 h1c->obuf.area = buf->area;
Christopher Fauletc2518a52019-06-25 21:41:02 +02001581 h1c->obuf.head = sizeof(struct htx) + blk->addr;
Willy Tarreau3815b222018-12-11 19:50:43 +01001582 h1c->obuf.data = count;
1583
1584 buf->area = old_area;
1585 buf->data = buf->head = 0;
Christopher Fauletadb22202018-12-12 10:32:09 +01001586
Christopher Faulet6b81df72019-10-01 22:08:43 +02001587 chn_htx = (struct htx *)buf->area;
1588 htx_reset(chn_htx);
1589
Christopher Fauletadb22202018-12-12 10:32:09 +01001590 /* The message is chunked. We need to emit the chunk
1591 * size. We have at least the size of the struct htx to
1592 * write the chunk envelope. It should be enough.
1593 */
1594 if (h1m->flags & H1_MF_CHNK) {
1595 h1_emit_chunk_size(&h1c->obuf, count);
1596 h1_emit_chunk_crlf(&h1c->obuf);
1597 }
1598
Willy Tarreau3815b222018-12-11 19:50:43 +01001599 total += count;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001600 if (h1m->state == H1_MSG_DATA)
1601 TRACE_PROTO((!(h1m->flags & H1_MF_RESP) ? "H1 request payload data xferred" : "H1 response payload data xferred"),
Christopher Faulet08618a72019-10-08 11:59:47 +02001602 H1_EV_TX_DATA|H1_EV_TX_BODY, h1c->conn, h1s,, (size_t[]){count});
Christopher Faulet6b81df72019-10-01 22:08:43 +02001603 else
1604 TRACE_PROTO((!(h1m->flags & H1_MF_RESP) ? "H1 request tunneled data xferred" : "H1 response tunneled data xferred"),
Christopher Faulet08618a72019-10-08 11:59:47 +02001605 H1_EV_TX_DATA|H1_EV_TX_BODY, h1c->conn, h1s,, (size_t[]){count});
Willy Tarreau3815b222018-12-11 19:50:43 +01001606 goto out;
1607 }
Christopher Fauletc2518a52019-06-25 21:41:02 +02001608 tmp.area = h1c->obuf.area + h1c->obuf.head;
Willy Tarreauc5efa332018-12-05 11:19:27 +01001609 }
Christopher Fauletc2518a52019-06-25 21:41:02 +02001610 else
1611 tmp.area = trash.area;
Christopher Faulet9768c262018-10-22 09:34:31 +02001612
Christopher Fauletc2518a52019-06-25 21:41:02 +02001613 tmp.data = 0;
1614 tmp.size = b_room(&h1c->obuf);
Christopher Fauletb2e84162018-12-06 11:39:49 +01001615 while (count && !(h1s->flags & errflag) && blk) {
Christopher Faulet570d1612018-11-26 11:13:57 +01001616 struct htx_sl *sl;
Christopher Faulet9768c262018-10-22 09:34:31 +02001617 struct ist n, v;
Christopher Fauletb2e84162018-12-06 11:39:49 +01001618 enum htx_blk_type type = htx_get_blk_type(blk);
Christopher Faulet9768c262018-10-22 09:34:31 +02001619 uint32_t sz = htx_get_blksz(blk);
Christopher Fauletd9233f02019-10-14 14:01:24 +02001620 uint32_t vlen, chklen;
Christopher Faulet9768c262018-10-22 09:34:31 +02001621
Christopher Fauletb2e84162018-12-06 11:39:49 +01001622 vlen = sz;
Christopher Fauletd9233f02019-10-14 14:01:24 +02001623 if (type != HTX_BLK_DATA && vlen > count)
1624 goto full;
Christopher Faulet9768c262018-10-22 09:34:31 +02001625
Christopher Faulet94b2c762019-05-24 15:28:57 +02001626 if (type == HTX_BLK_UNUSED)
1627 goto nextblk;
Christopher Faulet9768c262018-10-22 09:34:31 +02001628
Christopher Faulet94b2c762019-05-24 15:28:57 +02001629 switch (h1m->state) {
1630 case H1_MSG_RQBEFORE:
1631 if (type != HTX_BLK_REQ_SL)
1632 goto error;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001633 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 +02001634 sl = htx_get_blk_ptr(chn_htx, blk);
Christopher Faulet570d1612018-11-26 11:13:57 +01001635 h1s->meth = sl->info.req.meth;
Christopher Faulet9768c262018-10-22 09:34:31 +02001636 h1_parse_req_vsn(h1m, sl);
Christopher Faulet53a899b2019-10-08 16:38:42 +02001637 if (!h1_format_htx_reqline(sl, &tmp))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001638 goto full;
Christopher Faulet9768c262018-10-22 09:34:31 +02001639 h1m->flags |= H1_MF_XFER_LEN;
Christopher Faulet1f890dd2019-02-18 10:33:16 +01001640 if (sl->flags & HTX_SL_F_BODYLESS)
1641 h1m->flags |= H1_MF_CLEN;
Christopher Faulet9768c262018-10-22 09:34:31 +02001642 h1m->state = H1_MSG_HDR_FIRST;
Christopher Faulet129817b2018-09-20 16:14:40 +02001643 break;
Christopher Faulet129817b2018-09-20 16:14:40 +02001644
Christopher Faulet94b2c762019-05-24 15:28:57 +02001645 case H1_MSG_RPBEFORE:
1646 if (type != HTX_BLK_RES_SL)
1647 goto error;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001648 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 +02001649 sl = htx_get_blk_ptr(chn_htx, blk);
Christopher Faulet570d1612018-11-26 11:13:57 +01001650 h1s->status = sl->info.res.status;
Christopher Faulet9768c262018-10-22 09:34:31 +02001651 h1_parse_res_vsn(h1m, sl);
Christopher Faulet53a899b2019-10-08 16:38:42 +02001652 if (!h1_format_htx_stline(sl, &tmp))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001653 goto full;
Christopher Faulet03599112018-11-27 11:21:21 +01001654 if (sl->flags & HTX_SL_F_XFER_LEN)
Christopher Faulet9768c262018-10-22 09:34:31 +02001655 h1m->flags |= H1_MF_XFER_LEN;
Christopher Fauletd1ebb1e2018-11-28 16:32:50 +01001656 if (sl->info.res.status < 200 &&
1657 (sl->info.res.status == 100 || sl->info.res.status >= 102))
Christopher Fauletada34b62019-05-24 16:36:43 +02001658 h1s->flags |= H1S_F_HAVE_O_CONN;
Christopher Faulet9768c262018-10-22 09:34:31 +02001659 h1m->state = H1_MSG_HDR_FIRST;
1660 break;
1661
Christopher Faulet94b2c762019-05-24 15:28:57 +02001662 case H1_MSG_HDR_FIRST:
1663 case H1_MSG_HDR_NAME:
1664 case H1_MSG_HDR_L2_LWS:
1665 if (type == HTX_BLK_EOH)
1666 goto last_lf;
1667 if (type != HTX_BLK_HDR)
1668 goto error;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001669
Christopher Faulet9768c262018-10-22 09:34:31 +02001670 h1m->state = H1_MSG_HDR_NAME;
1671 n = htx_get_blk_name(chn_htx, blk);
1672 v = htx_get_blk_value(chn_htx, blk);
1673
Christopher Faulet86d144c2019-08-14 16:32:25 +02001674 /* Skip all pseudo-headers */
1675 if (*(n.ptr) == ':')
1676 goto skip_hdr;
1677
Christopher Fauletb045bb22020-02-28 10:42:20 +01001678 if (isteq(n, ist("transfer-encoding")))
Christopher Faulet9768c262018-10-22 09:34:31 +02001679 h1_parse_xfer_enc_header(h1m, v);
Christopher Fauletb045bb22020-02-28 10:42:20 +01001680 else if (isteq(n, ist("content-length"))) {
Christopher Faulet5220ef22019-03-27 15:44:56 +01001681 /* Only skip C-L header with invalid value. */
1682 if (h1_parse_cont_len_header(h1m, &v) < 0)
Willy Tarreau27cd2232019-01-03 21:52:42 +01001683 goto skip_hdr;
1684 }
Christopher Fauletb045bb22020-02-28 10:42:20 +01001685 else if (isteq(n, ist("connection"))) {
Christopher Fauletb992af02019-03-28 15:42:24 +01001686 h1_parse_connection_header(h1m, &v);
Christopher Faulet9768c262018-10-22 09:34:31 +02001687 if (!v.len)
1688 goto skip_hdr;
1689 }
1690
Christopher Faulet67d58092019-10-02 10:51:38 +02001691 /* Skip header if same name is used to add the server name */
1692 if (!(h1m->flags & H1_MF_RESP) && h1c->px->server_id_hdr_name &&
1693 isteqi(n, ist2(h1c->px->server_id_hdr_name, h1c->px->server_id_hdr_len)))
1694 goto skip_hdr;
1695
Christopher Faulet98fbe952019-07-22 16:18:24 +02001696 /* Try to adjust the case of the header name */
1697 if (h1c->px->options2 & (PR_O2_H1_ADJ_BUGCLI|PR_O2_H1_ADJ_BUGSRV))
1698 h1_adjust_case_outgoing_hdr(h1s, h1m, &n);
Christopher Faulet53a899b2019-10-08 16:38:42 +02001699 if (!h1_format_htx_hdr(n, v, &tmp))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001700 goto full;
Christopher Faulet9768c262018-10-22 09:34:31 +02001701 skip_hdr:
1702 h1m->state = H1_MSG_HDR_L2_LWS;
1703 break;
1704
Christopher Faulet94b2c762019-05-24 15:28:57 +02001705 case H1_MSG_LAST_LF:
1706 if (type != HTX_BLK_EOH)
1707 goto error;
1708 last_lf:
Christopher Fauletada34b62019-05-24 16:36:43 +02001709 h1m->state = H1_MSG_LAST_LF;
1710 if (!(h1s->flags & H1S_F_HAVE_O_CONN)) {
Christopher Faulet04f89192019-10-16 09:41:07 +02001711 /* If the reply comes from haproxy while the request is
1712 * not finished, we force the connection close. */
1713 if ((chn_htx->flags & HTX_FL_PROXY_RESP) && h1s->req.state != H1_MSG_DONE) {
1714 h1s->flags = (h1s->flags & ~H1S_F_WANT_MSK) | H1S_F_WANT_CLO;
1715 TRACE_STATE("force close mode (resp)", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1s->h1c->conn, h1s);
1716 }
1717
1718 /* the conn_mode must be processed. So do it */
Christopher Fauleta110ecb2019-06-17 14:07:46 +02001719 n = ist("connection");
Christopher Fauletd1ebb1e2018-11-28 16:32:50 +01001720 v = ist("");
Christopher Fauletb992af02019-03-28 15:42:24 +01001721 h1_process_output_conn_mode(h1s, h1m, &v);
Christopher Fauletd1ebb1e2018-11-28 16:32:50 +01001722 if (v.len) {
Christopher Faulet98fbe952019-07-22 16:18:24 +02001723 /* Try to adjust the case of the header name */
1724 if (h1c->px->options2 & (PR_O2_H1_ADJ_BUGCLI|PR_O2_H1_ADJ_BUGSRV))
1725 h1_adjust_case_outgoing_hdr(h1s, h1m, &n);
Christopher Faulet53a899b2019-10-08 16:38:42 +02001726 if (!h1_format_htx_hdr(n, v, &tmp))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001727 goto full;
Christopher Fauletd1ebb1e2018-11-28 16:32:50 +01001728 }
Christopher Fauletada34b62019-05-24 16:36:43 +02001729 h1s->flags |= H1S_F_HAVE_O_CONN;
Christopher Fauletd1ebb1e2018-11-28 16:32:50 +01001730 }
Willy Tarreau4710d202019-01-03 17:39:54 +01001731
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001732 if ((h1s->meth != HTTP_METH_CONNECT &&
1733 (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 +01001734 (H1_MF_VER_11|H1_MF_XFER_LEN)) ||
1735 (h1s->status >= 200 && h1s->status != 204 && h1s->status != 304 &&
1736 h1s->meth != HTTP_METH_HEAD && !(h1s->meth == HTTP_METH_CONNECT && h1s->status == 200) &&
1737 (h1m->flags & (H1_MF_VER_11|H1_MF_RESP|H1_MF_CLEN|H1_MF_CHNK|H1_MF_XFER_LEN)) ==
1738 (H1_MF_VER_11|H1_MF_RESP|H1_MF_XFER_LEN))) {
Willy Tarreau4710d202019-01-03 17:39:54 +01001739 /* chunking needed but header not seen */
Christopher Faulet7a991a92019-10-04 10:23:51 +02001740 n = ist("transfer-encoding");
1741 v = ist("chunked");
1742 if (h1c->px->options2 & (PR_O2_H1_ADJ_BUGCLI|PR_O2_H1_ADJ_BUGSRV))
1743 h1_adjust_case_outgoing_hdr(h1s, h1m, &n);
Christopher Faulet53a899b2019-10-08 16:38:42 +02001744 if (!h1_format_htx_hdr(n, v, &tmp))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001745 goto full;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001746 TRACE_STATE("add \"Transfer-Encoding: chunked\"", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1c->conn, h1s);
Willy Tarreau4710d202019-01-03 17:39:54 +01001747 h1m->flags |= H1_MF_CHNK;
1748 }
1749
Christopher Faulet72ba6cd2019-09-24 16:20:05 +02001750 /* Now add the server name to a header (if requested) */
1751 if (!(h1s->flags & H1S_F_HAVE_SRV_NAME) &&
1752 !(h1m->flags & H1_MF_RESP) && h1c->px->server_id_hdr_name) {
1753 struct server *srv = objt_server(h1c->conn->target);
1754
1755 if (srv) {
1756 n = ist2(h1c->px->server_id_hdr_name, h1c->px->server_id_hdr_len);
1757 v = ist(srv->id);
Christopher Faulet5cef2a62019-10-02 11:06:13 +02001758
1759 /* Try to adjust the case of the header name */
1760 if (h1c->px->options2 & (PR_O2_H1_ADJ_BUGCLI|PR_O2_H1_ADJ_BUGSRV))
1761 h1_adjust_case_outgoing_hdr(h1s, h1m, &n);
Christopher Faulet53a899b2019-10-08 16:38:42 +02001762 if (!h1_format_htx_hdr(n, v, &tmp))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001763 goto full;
Christopher Faulet72ba6cd2019-09-24 16:20:05 +02001764 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02001765 TRACE_STATE("add server name header", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1c->conn, h1s);
Christopher Faulet72ba6cd2019-09-24 16:20:05 +02001766 h1s->flags |= H1S_F_HAVE_SRV_NAME;
1767 }
1768
Christopher Fauletc2518a52019-06-25 21:41:02 +02001769 if (!chunk_memcat(&tmp, "\r\n", 2))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001770 goto full;
Christopher Faulet9768c262018-10-22 09:34:31 +02001771
Christopher Faulet6b81df72019-10-01 22:08:43 +02001772 TRACE_PROTO((!(h1m->flags & H1_MF_RESP) ? "H1 request headers xferred" : "H1 response headers xferred"),
1773 H1_EV_TX_DATA|H1_EV_TX_HDRS, h1c->conn, h1s);
1774
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001775 if (!(h1m->flags & H1_MF_RESP) && h1s->meth == HTTP_METH_CONNECT) {
1776 /* a CONNECT request is sent to the server. Switch it to tunnel mode. */
1777 h1_set_req_tunnel_mode(h1s);
1778 }
Christopher Fauletf3158e92019-11-15 11:14:23 +01001779 else if ((h1m->flags & H1_MF_RESP) &&
1780 ((h1s->meth == HTTP_METH_CONNECT && h1s->status == 200) || h1s->status == 101)) {
Ilya Shipitsinc02a23f2020-05-06 00:53:22 +05001781 /* a successful reply to a CONNECT or a protocol switching is sent
Christopher Fauletf3158e92019-11-15 11:14:23 +01001782 * to the client. Switch the response to tunnel mode.
1783 */
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001784 h1_set_res_tunnel_mode(h1s);
Christopher Faulet6b81df72019-10-01 22:08:43 +02001785 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 +01001786 }
Christopher Fauletb75b5ea2019-05-17 08:37:28 +02001787 else if ((h1m->flags & H1_MF_RESP) &&
1788 h1s->status < 200 && (h1s->status == 100 || h1s->status >= 102)) {
1789 h1m_init_res(&h1s->res);
1790 h1m->flags |= (H1_MF_NO_PHDR|H1_MF_CLEAN_CONN_HDR);
Christopher Fauletada34b62019-05-24 16:36:43 +02001791 h1s->flags &= ~H1S_F_HAVE_O_CONN;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001792 TRACE_STATE("1xx response xferred", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1c->conn, h1s);
Christopher Fauletb75b5ea2019-05-17 08:37:28 +02001793 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02001794 else if ((h1m->flags & H1_MF_RESP) && h1s->meth == HTTP_METH_HEAD) {
Christopher Fauletb8fc3042019-07-01 16:17:30 +02001795 h1m->state = H1_MSG_DONE;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001796 TRACE_STATE("HEAD response processed", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1c->conn, h1s);
1797 }
Christopher Fauletc62c2b92019-03-28 11:41:39 +01001798 else
1799 h1m->state = H1_MSG_DATA;
Christopher Faulet9768c262018-10-22 09:34:31 +02001800 break;
1801
Christopher Faulet94b2c762019-05-24 15:28:57 +02001802 case H1_MSG_DATA:
Christopher Fauletf8db73e2019-07-04 17:12:12 +02001803 case H1_MSG_TUNNEL:
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001804 if (type == HTX_BLK_EOM) {
1805 /* Chunked message without explicit trailers */
1806 if (h1m->flags & H1_MF_CHNK) {
Christopher Fauletc2518a52019-06-25 21:41:02 +02001807 if (!chunk_memcat(&tmp, "0\r\n\r\n", 5))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001808 goto full;
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001809 }
1810 goto done;
1811 }
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001812 else if (type == HTX_BLK_EOT || type == HTX_BLK_TLR) {
Christopher Faulet5433a0b2019-06-27 17:40:14 +02001813 /* If the message is not chunked, never
1814 * add the last chunk. */
1815 if ((h1m->flags & H1_MF_CHNK) && !chunk_memcat(&tmp, "0\r\n", 3))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001816 goto full;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001817 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 +02001818 goto trailers;
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001819 }
Christopher Faulet94b2c762019-05-24 15:28:57 +02001820 else if (type != HTX_BLK_DATA)
1821 goto error;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001822
1823 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 +02001824
1825
1826 if (vlen > count) {
1827 /* Get the maximum amount of data we can xferred */
1828 vlen = count;
1829 }
1830
1831 chklen = 0;
1832 if (h1m->flags & H1_MF_CHNK) {
1833 chklen = b_room(&tmp);
1834 chklen = ((chklen < 16) ? 1 : (chklen < 256) ? 2 :
1835 (chklen < 4096) ? 3 : (chklen < 65536) ? 4 :
1836 (chklen < 1048576) ? 5 : 8);
1837 chklen += 4; /* 2 x CRLF */
1838 }
1839
1840 if (vlen + chklen > b_room(&tmp)) {
1841 /* too large for the buffer */
1842 if (chklen >= b_room(&tmp))
1843 goto full;
1844 vlen = b_room(&tmp) - chklen;
1845 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001846 v = htx_get_blk_value(chn_htx, blk);
Christopher Fauletb2e84162018-12-06 11:39:49 +01001847 v.len = vlen;
Christopher Faulet53a899b2019-10-08 16:38:42 +02001848 if (!h1_format_htx_data(v, &tmp, !!(h1m->flags & H1_MF_CHNK)))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001849 goto full;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001850
1851 if (h1m->state == H1_MSG_DATA)
1852 TRACE_PROTO((!(h1m->flags & H1_MF_RESP) ? "H1 request payload data xferred" : "H1 response payload data xferred"),
Christopher Faulet08618a72019-10-08 11:59:47 +02001853 H1_EV_TX_DATA|H1_EV_TX_BODY, h1c->conn, h1s,, (size_t[]){v.len});
Christopher Faulet6b81df72019-10-01 22:08:43 +02001854 else
1855 TRACE_PROTO((!(h1m->flags & H1_MF_RESP) ? "H1 request tunneled data xferred" : "H1 response tunneled data xferred"),
Christopher Faulet08618a72019-10-08 11:59:47 +02001856 H1_EV_TX_DATA|H1_EV_TX_BODY, h1c->conn, h1s,, (size_t[]){v.len});
Christopher Faulet9768c262018-10-22 09:34:31 +02001857 break;
1858
Christopher Faulet94b2c762019-05-24 15:28:57 +02001859 case H1_MSG_TRAILERS:
1860 if (type == HTX_BLK_EOM)
1861 goto done;
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001862 else if (type != HTX_BLK_TLR && type != HTX_BLK_EOT)
Christopher Faulet94b2c762019-05-24 15:28:57 +02001863 goto error;
1864 trailers:
Christopher Faulet9768c262018-10-22 09:34:31 +02001865 h1m->state = H1_MSG_TRAILERS;
Christopher Faulet5433a0b2019-06-27 17:40:14 +02001866 /* If the message is not chunked, ignore
1867 * trailers. It may happen with H2 messages. */
1868 if (!(h1m->flags & H1_MF_CHNK))
1869 break;
1870
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001871 if (type == HTX_BLK_EOT) {
Christopher Fauletc2518a52019-06-25 21:41:02 +02001872 if (!chunk_memcat(&tmp, "\r\n", 2))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001873 goto full;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001874 TRACE_PROTO((!(h1m->flags & H1_MF_RESP) ? "H1 request trailers xferred" : "H1 response trailers xferred"),
1875 H1_EV_TX_DATA|H1_EV_TX_TLRS, h1c->conn, h1s);
Christopher Faulet32188212018-11-20 18:21:43 +01001876 }
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001877 else { // HTX_BLK_TLR
1878 n = htx_get_blk_name(chn_htx, blk);
1879 v = htx_get_blk_value(chn_htx, blk);
Christopher Faulet98fbe952019-07-22 16:18:24 +02001880
1881 /* Try to adjust the case of the header name */
1882 if (h1c->px->options2 & (PR_O2_H1_ADJ_BUGCLI|PR_O2_H1_ADJ_BUGSRV))
1883 h1_adjust_case_outgoing_hdr(h1s, h1m, &n);
Christopher Faulet53a899b2019-10-08 16:38:42 +02001884 if (!h1_format_htx_hdr(n, v, &tmp))
Christopher Fauleta61aa542019-10-14 14:17:00 +02001885 goto full;
Christopher Faulet2d7c5392019-06-03 10:41:26 +02001886 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001887 break;
1888
Christopher Faulet94b2c762019-05-24 15:28:57 +02001889 case H1_MSG_DONE:
1890 if (type != HTX_BLK_EOM)
1891 goto error;
1892 done:
1893 h1m->state = H1_MSG_DONE;
Christopher Fauletf3158e92019-11-15 11:14:23 +01001894 if (!(h1m->flags & H1_MF_RESP) && h1s->status == 101) {
1895 h1_set_req_tunnel_mode(h1s);
1896 TRACE_STATE("switch H1 request in tunnel mode", H1_EV_TX_DATA|H1_EV_TX_HDRS, h1c->conn, h1s);
1897 }
1898 else if (h1s->h1c->flags & H1C_F_IN_BUSY) {
Christopher Fauletcd67bff2019-06-14 16:54:15 +02001899 h1s->h1c->flags &= ~H1C_F_IN_BUSY;
Willy Tarreau2c1f37d2020-03-04 17:50:02 +01001900 h1c->conn->xprt->subscribe(h1c->conn, h1c->conn->xprt_ctx, SUB_RETRY_RECV, &h1c->wait_event);
Christopher Faulet6b81df72019-10-01 22:08:43 +02001901 TRACE_STATE("h1c no more busy", H1_EV_TX_DATA|H1_EV_H1C_BLK|H1_EV_H1C_WAKE, h1c->conn, h1s);
Christopher Fauletcd67bff2019-06-14 16:54:15 +02001902 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02001903
1904 TRACE_USER((!(h1m->flags & H1_MF_RESP) ? "H1 request fully xferred" : "H1 response fully xferred"),
1905 H1_EV_TX_DATA, h1c->conn, h1s);
Christopher Faulet9768c262018-10-22 09:34:31 +02001906 break;
1907
Christopher Faulet9768c262018-10-22 09:34:31 +02001908 default:
Christopher Faulet94b2c762019-05-24 15:28:57 +02001909 error:
Christopher Faulet6b81df72019-10-01 22:08:43 +02001910 TRACE_PROTO("formatting error", H1_EV_TX_DATA, h1c->conn, h1s);
Christopher Fauletd87d3fa2019-06-26 15:16:28 +02001911 /* Unexpected error during output processing */
Christopher Faulet69b48212019-09-09 10:11:30 +02001912 chn_htx->flags |= HTX_FL_PROCESSING_ERROR;
Christopher Fauleta2ea1582019-05-28 10:35:18 +02001913 h1s->flags |= errflag;
Christopher Fauletd87d3fa2019-06-26 15:16:28 +02001914 h1c->flags |= H1C_F_CS_ERROR;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001915 TRACE_STATE("processing error, set error on h1c/h1s", H1_EV_H1C_ERR|H1_EV_H1S_ERR, h1c->conn, h1s);
1916 TRACE_DEVEL("unexpected error", H1_EV_TX_DATA|H1_EV_STRM_ERR, h1c->conn, h1s);
Christopher Faulet9768c262018-10-22 09:34:31 +02001917 break;
1918 }
Christopher Faulet94b2c762019-05-24 15:28:57 +02001919
1920 nextblk:
Christopher Fauletb2e84162018-12-06 11:39:49 +01001921 total += vlen;
1922 count -= vlen;
1923 if (sz == vlen)
1924 blk = htx_remove_blk(chn_htx, blk);
1925 else {
1926 htx_cut_data_blk(chn_htx, blk, vlen);
1927 break;
1928 }
Christopher Faulet129817b2018-09-20 16:14:40 +02001929 }
1930
Christopher Faulet9768c262018-10-22 09:34:31 +02001931 copy:
Willy Tarreauc5efa332018-12-05 11:19:27 +01001932 /* when the output buffer is empty, tmp shares the same area so that we
1933 * only have to update pointers and lengths.
1934 */
Christopher Fauletc2518a52019-06-25 21:41:02 +02001935 if (tmp.area == h1c->obuf.area + h1c->obuf.head)
1936 h1c->obuf.data = tmp.data;
Willy Tarreauc5efa332018-12-05 11:19:27 +01001937 else
Christopher Fauletc2518a52019-06-25 21:41:02 +02001938 b_putblk(&h1c->obuf, tmp.area, tmp.data);
Christopher Faulet51dbc942018-09-13 09:05:15 +02001939
Willy Tarreau3815b222018-12-11 19:50:43 +01001940 htx_to_buf(chn_htx, buf);
Christopher Faulet6b81df72019-10-01 22:08:43 +02001941 out:
1942 if (!buf_room_for_htx_data(&h1c->obuf)) {
1943 TRACE_STATE("h1c obuf full", H1_EV_TX_DATA|H1_EV_H1S_BLK, h1c->conn, h1s);
Christopher Faulet51dbc942018-09-13 09:05:15 +02001944 h1c->flags |= H1C_F_OUT_FULL;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001945 }
Christopher Faulet9768c262018-10-22 09:34:31 +02001946 end:
Christopher Faulet6b81df72019-10-01 22:08:43 +02001947 TRACE_LEAVE(H1_EV_TX_DATA, h1c->conn, h1s, chn_htx, (size_t[]){total});
Christopher Faulet9768c262018-10-22 09:34:31 +02001948 return total;
Christopher Fauleta61aa542019-10-14 14:17:00 +02001949
1950 full:
1951 TRACE_STATE("h1c obuf full", H1_EV_TX_DATA|H1_EV_H1S_BLK, h1c->conn, h1s);
1952 h1c->flags |= H1C_F_OUT_FULL;
1953 goto copy;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001954}
1955
Christopher Faulet51dbc942018-09-13 09:05:15 +02001956/*********************************************************/
1957/* functions below are I/O callbacks from the connection */
1958/*********************************************************/
Christopher Faulete17fa2f2018-12-11 16:25:36 +01001959static void h1_wake_stream_for_recv(struct h1s *h1s)
1960{
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01001961 if (h1s && h1s->subs && h1s->subs->events & SUB_RETRY_RECV) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001962 TRACE_POINT(H1_EV_STRM_WAKE, h1s->h1c->conn, h1s);
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01001963 tasklet_wakeup(h1s->subs->tasklet);
1964 h1s->subs->events &= ~SUB_RETRY_RECV;
1965 if (!h1s->subs->events)
1966 h1s->subs = NULL;
Christopher Faulete17fa2f2018-12-11 16:25:36 +01001967 }
1968}
1969static void h1_wake_stream_for_send(struct h1s *h1s)
1970{
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01001971 if (h1s && h1s->subs && h1s->subs->events & SUB_RETRY_SEND) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001972 TRACE_POINT(H1_EV_STRM_WAKE, h1s->h1c->conn, h1s);
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01001973 tasklet_wakeup(h1s->subs->tasklet);
1974 h1s->subs->events &= ~SUB_RETRY_SEND;
1975 if (!h1s->subs->events)
1976 h1s->subs = NULL;
Christopher Faulete17fa2f2018-12-11 16:25:36 +01001977 }
1978}
1979
Christopher Faulet51dbc942018-09-13 09:05:15 +02001980/*
1981 * Attempt to read data, and subscribe if none available
1982 */
1983static int h1_recv(struct h1c *h1c)
1984{
1985 struct connection *conn = h1c->conn;
Christopher Faulet6b81df72019-10-01 22:08:43 +02001986 struct h1s *h1s = h1c->h1s;
Olivier Houchard75159a92018-12-03 18:46:09 +01001987 size_t ret = 0, max;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001988 int rcvd = 0;
Willy Tarreau6e59cb52020-02-20 11:11:50 +01001989 int flags = 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02001990
Christopher Faulet6b81df72019-10-01 22:08:43 +02001991 TRACE_ENTER(H1_EV_H1C_RECV, h1c->conn);
1992
1993 if (h1c->wait_event.events & SUB_RETRY_RECV) {
1994 TRACE_DEVEL("leaving on sub_recv", H1_EV_H1C_RECV, h1c->conn);
Christopher Fauletc386a882018-12-04 16:06:28 +01001995 return (b_data(&h1c->ibuf));
Christopher Faulet6b81df72019-10-01 22:08:43 +02001996 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02001997
Olivier Houchard75159a92018-12-03 18:46:09 +01001998 if (!h1_recv_allowed(h1c)) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02001999 TRACE_DEVEL("leaving on !recv_allowed", H1_EV_H1C_RECV, h1c->conn);
Olivier Houchard75159a92018-12-03 18:46:09 +01002000 rcvd = 1;
Christopher Faulet9768c262018-10-22 09:34:31 +02002001 goto end;
Olivier Houchard75159a92018-12-03 18:46:09 +01002002 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002003
Christopher Fauletf7d5ff32019-04-16 13:55:08 +02002004 if (!h1_get_buf(h1c, &h1c->ibuf)) {
2005 h1c->flags |= H1C_F_IN_ALLOC;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002006 TRACE_STATE("waiting for h1c ibuf allocation", H1_EV_H1C_RECV|H1_EV_H1C_BLK, h1c->conn);
Christopher Faulet9768c262018-10-22 09:34:31 +02002007 goto end;
2008 }
Christopher Faulet1be55f92018-10-02 15:59:23 +02002009
Christopher Fauletf7d5ff32019-04-16 13:55:08 +02002010 if (h1s && (h1s->flags & (H1S_F_BUF_FLUSH|H1S_F_SPLICED_DATA))) {
Willy Tarreaufbdf90a2019-06-03 13:42:54 +02002011 if (!h1s_data_pending(h1s))
Christopher Fauletf7d5ff32019-04-16 13:55:08 +02002012 h1_wake_stream_for_recv(h1s);
2013 rcvd = 1;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002014 TRACE_DEVEL("leaving on (buf_flush|spliced_data)", H1_EV_H1C_RECV, h1c->conn);
Christopher Faulet9768c262018-10-22 09:34:31 +02002015 goto end;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002016 }
2017
Olivier Houchard29a22bc2018-12-04 18:16:45 +01002018 /*
2019 * If we only have a small amount of data, realign it,
2020 * it's probably cheaper than doing 2 recv() calls.
2021 */
2022 if (b_data(&h1c->ibuf) > 0 && b_data(&h1c->ibuf) < 128)
2023 b_slow_realign(&h1c->ibuf, trash.area, 0);
2024
Willy Tarreau6e59cb52020-02-20 11:11:50 +01002025 /* avoid useless reads after first responses */
2026 if (h1s && (h1s->req.state == H1_MSG_RQBEFORE || h1s->res.state == H1_MSG_RPBEFORE))
2027 flags |= CO_RFL_READ_ONCE;
2028
Willy Tarreau45f2b892018-12-05 07:59:27 +01002029 max = buf_room_for_htx_data(&h1c->ibuf);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002030 if (max) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002031 if (h1c->flags & H1C_F_IN_FULL) {
2032 h1c->flags &= ~H1C_F_IN_FULL;
2033 TRACE_STATE("h1c ibuf not full anymore", H1_EV_H1C_RECV|H1_EV_H1C_BLK);
2034 }
Willy Tarreau78f548f2018-12-05 10:02:39 +01002035
Willy Tarreaue0f24ee2018-12-14 10:51:23 +01002036 b_realign_if_empty(&h1c->ibuf);
Willy Tarreau78f548f2018-12-05 10:02:39 +01002037 if (!b_data(&h1c->ibuf)) {
2038 /* try to pre-align the buffer like the rxbufs will be
2039 * to optimize memory copies.
2040 */
Willy Tarreau78f548f2018-12-05 10:02:39 +01002041 h1c->ibuf.head = sizeof(struct htx);
2042 }
Willy Tarreau6e59cb52020-02-20 11:11:50 +01002043 ret = conn->xprt->rcv_buf(conn, conn->xprt_ctx, &h1c->ibuf, max, flags);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002044 }
Christopher Faulet47365272018-10-31 17:40:50 +01002045 if (ret > 0) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002046 TRACE_DATA("data received", H1_EV_H1C_RECV, h1c->conn,,, (size_t[]){ret});
Christopher Faulet51dbc942018-09-13 09:05:15 +02002047 rcvd = 1;
Christopher Fauletfeb11742018-11-29 15:12:34 +01002048 if (h1s && h1s->cs) {
Christopher Faulet37e36072018-12-04 15:54:12 +01002049 h1s->cs->flags |= (CS_FL_READ_PARTIAL|CS_FL_RCV_MORE);
Christopher Fauletfeb11742018-11-29 15:12:34 +01002050 if (h1s->csinfo.t_idle == -1)
2051 h1s->csinfo.t_idle = tv_ms_elapsed(&h1s->csinfo.tv_create, &now) - h1s->csinfo.t_handshake;
2052 }
Christopher Faulet47365272018-10-31 17:40:50 +01002053 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002054
Olivier Houchardcc3fec82019-07-26 15:11:11 +02002055 if (ret > 0 || !h1_recv_allowed(h1c) || !buf_room_for_htx_data(&h1c->ibuf)) {
Christopher Faulet81d48432018-11-19 21:22:43 +01002056 rcvd = 1;
Christopher Fauletcf56b992018-12-11 16:12:31 +01002057 goto end;
2058 }
2059
Christopher Faulet6b81df72019-10-01 22:08:43 +02002060 TRACE_STATE("failed to receive data, subscribing", H1_EV_H1C_RECV, h1c->conn);
Olivier Houcharde179d0e2019-03-21 18:27:17 +01002061 conn->xprt->subscribe(conn, conn->xprt_ctx, SUB_RETRY_RECV, &h1c->wait_event);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002062
Christopher Faulet9768c262018-10-22 09:34:31 +02002063 end:
Christopher Faulete17fa2f2018-12-11 16:25:36 +01002064 if (ret > 0 || (conn->flags & CO_FL_ERROR) || conn_xprt_read0_pending(conn))
2065 h1_wake_stream_for_recv(h1s);
Olivier Houchard75159a92018-12-03 18:46:09 +01002066
Willy Tarreauc493c9c2019-06-03 14:18:22 +02002067 if (conn_xprt_read0_pending(conn) && h1s) {
2068 h1s->flags |= H1S_F_REOS;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002069 TRACE_STATE("read0 on connection", H1_EV_H1C_RECV, conn, h1s);
Willy Tarreaufbdf90a2019-06-03 13:42:54 +02002070 rcvd = 1;
2071 }
2072
Christopher Faulet51dbc942018-09-13 09:05:15 +02002073 if (!b_data(&h1c->ibuf))
2074 h1_release_buf(h1c, &h1c->ibuf);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002075 else if (!buf_room_for_htx_data(&h1c->ibuf)) {
Christopher Faulet51dbc942018-09-13 09:05:15 +02002076 h1c->flags |= H1C_F_IN_FULL;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002077 TRACE_STATE("h1c ibuf full", H1_EV_H1C_RECV|H1_EV_H1C_BLK);
2078 }
2079
2080 TRACE_LEAVE(H1_EV_H1C_RECV, h1c->conn);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002081 return rcvd;
2082}
2083
2084
2085/*
2086 * Try to send data if possible
2087 */
2088static int h1_send(struct h1c *h1c)
2089{
2090 struct connection *conn = h1c->conn;
2091 unsigned int flags = 0;
2092 size_t ret;
2093 int sent = 0;
2094
Christopher Faulet6b81df72019-10-01 22:08:43 +02002095 TRACE_ENTER(H1_EV_H1C_SEND, h1c->conn);
2096
2097 if (conn->flags & CO_FL_ERROR) {
2098 TRACE_DEVEL("leaving on connection error", H1_EV_H1C_SEND, h1c->conn);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002099 return 0;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002100 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002101
2102 if (!b_data(&h1c->obuf))
2103 goto end;
2104
Christopher Faulet46230362019-10-17 16:04:20 +02002105 if (h1c->flags & H1C_F_CO_MSG_MORE)
Christopher Faulet51dbc942018-09-13 09:05:15 +02002106 flags |= CO_SFL_MSG_MORE;
Christopher Faulet46230362019-10-17 16:04:20 +02002107 if (h1c->flags & H1C_F_CO_STREAMER)
2108 flags |= CO_SFL_STREAMER;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002109
Olivier Houcharde179d0e2019-03-21 18:27:17 +01002110 ret = conn->xprt->snd_buf(conn, conn->xprt_ctx, &h1c->obuf, b_data(&h1c->obuf), flags);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002111 if (ret > 0) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002112 TRACE_DATA("data sent", H1_EV_H1C_SEND, h1c->conn,,, (size_t[]){ret});
2113 if (h1c->flags & H1C_F_OUT_FULL) {
2114 h1c->flags &= ~H1C_F_OUT_FULL;
2115 TRACE_STATE("h1c obuf not full anymore", H1_EV_STRM_SEND|H1_EV_H1S_BLK, h1c->conn);
2116 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002117 b_del(&h1c->obuf, ret);
2118 sent = 1;
2119 }
2120
Christopher Faulet145aa472018-12-06 10:56:20 +01002121 if (conn->flags & (CO_FL_ERROR|CO_FL_SOCK_WR_SH)) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002122 TRACE_DEVEL("connection error or output closed", H1_EV_H1C_SEND, h1c->conn);
Christopher Faulet145aa472018-12-06 10:56:20 +01002123 /* error or output closed, nothing to send, clear the buffer to release it */
2124 b_reset(&h1c->obuf);
2125 }
2126
Christopher Faulet51dbc942018-09-13 09:05:15 +02002127 end:
Christopher Faulete17fa2f2018-12-11 16:25:36 +01002128 if (!(h1c->flags & H1C_F_OUT_FULL))
2129 h1_wake_stream_for_send(h1c->h1s);
Olivier Houchard75159a92018-12-03 18:46:09 +01002130
Christopher Faulet51dbc942018-09-13 09:05:15 +02002131 /* We're done, no more to send */
2132 if (!b_data(&h1c->obuf)) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002133 TRACE_DEVEL("leaving with everything sent", H1_EV_H1C_SEND, h1c->conn);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002134 h1_release_buf(h1c, &h1c->obuf);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002135 if (h1c->flags & H1C_F_CS_SHUTW_NOW) {
2136 TRACE_STATE("process pending shutdown for writes", H1_EV_H1C_SEND, h1c->conn);
Christopher Faulet666a0c42019-01-08 11:12:04 +01002137 h1_shutw_conn(conn, CS_SHW_NORMAL);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002138 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002139 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02002140 else if (!(h1c->wait_event.events & SUB_RETRY_SEND)) {
2141 TRACE_STATE("more data to send, subscribing", H1_EV_H1C_SEND, h1c->conn);
Olivier Houcharde179d0e2019-03-21 18:27:17 +01002142 conn->xprt->subscribe(conn, conn->xprt_ctx, SUB_RETRY_SEND, &h1c->wait_event);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002143 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002144
Christopher Faulet6b81df72019-10-01 22:08:43 +02002145 TRACE_LEAVE(H1_EV_H1C_SEND, h1c->conn);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002146 return sent;
2147}
2148
Christopher Faulet51dbc942018-09-13 09:05:15 +02002149
2150/* callback called on any event by the connection handler.
2151 * It applies changes and returns zero, or < 0 if it wants immediate
2152 * destruction of the connection.
2153 */
2154static int h1_process(struct h1c * h1c)
2155{
2156 struct connection *conn = h1c->conn;
Christopher Fauletfeb11742018-11-29 15:12:34 +01002157 struct h1s *h1s = h1c->h1s;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002158
Christopher Faulet6b81df72019-10-01 22:08:43 +02002159 TRACE_ENTER(H1_EV_H1C_WAKE, conn);
2160
Willy Tarreau3d2ee552018-12-19 14:12:10 +01002161 if (!conn->ctx)
Christopher Faulet51dbc942018-09-13 09:05:15 +02002162 return -1;
2163
Christopher Fauletfeb11742018-11-29 15:12:34 +01002164 if (!h1s) {
Christopher Faulet37243bc2019-07-11 15:40:25 +02002165 if (h1c->flags & (H1C_F_CS_ERROR|H1C_F_CS_SHUTDOWN) ||
Christopher Fauletaaa67bc2019-12-05 10:23:37 +01002166 conn->flags & (CO_FL_ERROR|CO_FL_SOCK_RD_SH|CO_FL_SOCK_WR_SH))
Christopher Faulet539e0292018-11-19 10:40:09 +01002167 goto release;
Christopher Fauletaaa67bc2019-12-05 10:23:37 +01002168 if (!conn_is_back(conn) && (h1c->flags & H1C_F_CS_IDLE)) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002169 TRACE_STATE("K/A incoming connection, create new H1 stream", H1_EV_H1C_WAKE, conn);
Olivier Houchardf502aca2018-12-14 19:42:40 +01002170 if (!h1s_create(h1c, NULL, NULL))
Christopher Faulet539e0292018-11-19 10:40:09 +01002171 goto release;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002172 }
Christopher Faulet1a7ad7a2018-12-04 16:10:44 +01002173 else
Olivier Houcharde7284782018-12-06 18:54:54 +01002174 goto end;
Christopher Fauletfeb11742018-11-29 15:12:34 +01002175 h1s = h1c->h1s;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002176 }
2177
Christopher Fauletfeb11742018-11-29 15:12:34 +01002178 if (b_data(&h1c->ibuf) && h1s->csinfo.t_idle == -1)
2179 h1s->csinfo.t_idle = tv_ms_elapsed(&h1s->csinfo.tv_create, &now) - h1s->csinfo.t_handshake;
2180
Christopher Faulet6b81df72019-10-01 22:08:43 +02002181 if (conn_xprt_read0_pending(conn)) {
Willy Tarreauc493c9c2019-06-03 14:18:22 +02002182 h1s->flags |= H1S_F_REOS;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002183 TRACE_STATE("read0 on connection", H1_EV_H1C_RECV, conn, h1s);
2184 }
Willy Tarreauc493c9c2019-06-03 14:18:22 +02002185
Willy Tarreaufbdf90a2019-06-03 13:42:54 +02002186 if (!h1s_data_pending(h1s) && h1s && h1s->cs && h1s->cs->data_cb->wake &&
Willy Tarreauc493c9c2019-06-03 14:18:22 +02002187 (h1s->flags & H1S_F_REOS || h1c->flags & H1C_F_CS_ERROR ||
Olivier Houchard32d75ed2019-01-14 17:27:23 +01002188 conn->flags & (CO_FL_ERROR | CO_FL_SOCK_WR_SH))) {
Olivier Houchard75159a92018-12-03 18:46:09 +01002189 if (h1c->flags & H1C_F_CS_ERROR || conn->flags & CO_FL_ERROR)
Willy Tarreauc493c9c2019-06-03 14:18:22 +02002190 h1s->cs->flags |= CS_FL_ERROR;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002191 TRACE_POINT(H1_EV_STRM_WAKE, h1c->conn, h1s);
Olivier Houchard75159a92018-12-03 18:46:09 +01002192 h1s->cs->data_cb->wake(h1s->cs);
2193 }
Christopher Faulet47365272018-10-31 17:40:50 +01002194 end:
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002195 if (h1c->task) {
2196 h1c->task->expire = TICK_ETERNITY;
2197 if (b_data(&h1c->obuf)) {
Christopher Faulet666a0c42019-01-08 11:12:04 +01002198 h1c->task->expire = tick_add(now_ms, ((h1c->flags & (H1C_F_CS_SHUTW_NOW|H1C_F_CS_SHUTDOWN))
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002199 ? h1c->shut_timeout
2200 : h1c->timeout));
2201 task_queue(h1c->task);
2202 }
2203 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02002204 TRACE_LEAVE(H1_EV_H1C_WAKE, conn);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002205 return 0;
Christopher Faulet539e0292018-11-19 10:40:09 +01002206
2207 release:
Christopher Faulet73c12072019-04-08 11:23:22 +02002208 h1_release(h1c);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002209 TRACE_DEVEL("leaving after releasing the connection", H1_EV_H1C_WAKE);
Christopher Faulet539e0292018-11-19 10:40:09 +01002210 return -1;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002211}
2212
2213static struct task *h1_io_cb(struct task *t, void *ctx, unsigned short status)
2214{
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01002215 struct connection *conn;
2216 struct tasklet *tl = (struct tasklet *)t;
2217 int conn_in_list;
2218 struct h1c *h1c;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002219 int ret = 0;
2220
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01002221
Willy Tarreau4d82bf52020-06-28 00:19:17 +02002222 HA_SPIN_LOCK(OTHER_LOCK, &idle_conns[tid].toremove_lock);
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01002223 if (tl->context == NULL) {
2224 /* The connection has been taken over by another thread,
2225 * we're no longer responsible for it, so just free the
2226 * tasklet, and do nothing.
2227 */
Willy Tarreau4d82bf52020-06-28 00:19:17 +02002228 HA_SPIN_UNLOCK(OTHER_LOCK, &idle_conns[tid].toremove_lock);
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01002229 tasklet_free(tl);
2230 return NULL;
2231 }
2232 h1c = ctx;
2233 conn = h1c->conn;
2234
2235 TRACE_POINT(H1_EV_H1C_WAKE, conn);
2236
2237 /* Remove the connection from the list, to be sure nobody attempts
2238 * to use it while we handle the I/O events
2239 */
2240 conn_in_list = conn->flags & CO_FL_LIST_MASK;
2241 if (conn_in_list)
2242 MT_LIST_DEL(&conn->list);
2243
Willy Tarreau4d82bf52020-06-28 00:19:17 +02002244 HA_SPIN_UNLOCK(OTHER_LOCK, &idle_conns[tid].toremove_lock);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002245
Willy Tarreau4f6516d2018-12-19 13:59:17 +01002246 if (!(h1c->wait_event.events & SUB_RETRY_SEND))
Christopher Faulet51dbc942018-09-13 09:05:15 +02002247 ret = h1_send(h1c);
Willy Tarreau4f6516d2018-12-19 13:59:17 +01002248 if (!(h1c->wait_event.events & SUB_RETRY_RECV))
Christopher Faulet51dbc942018-09-13 09:05:15 +02002249 ret |= h1_recv(h1c);
Christopher Faulet81d48432018-11-19 21:22:43 +01002250 if (ret || !h1c->h1s)
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01002251 ret = h1_process(h1c);
2252 /* If we were in an idle list, we want to add it back into it,
2253 * unless h1_process() returned -1, which mean it has destroyed
2254 * the connection (testing !ret is enough, if h1_process() wasn't
2255 * called then ret will be 0 anyway.
2256 */
2257 if (!ret && conn_in_list) {
2258 struct server *srv = objt_server(conn->target);
2259
2260 if (conn_in_list == CO_FL_SAFE_LIST)
2261 MT_LIST_ADDQ(&srv->safe_conns[tid], &conn->list);
2262 else
2263 MT_LIST_ADDQ(&srv->idle_conns[tid], &conn->list);
2264 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002265 return NULL;
2266}
2267
Olivier Houchard9a86fcb2018-12-11 16:47:14 +01002268static void h1_reset(struct connection *conn)
2269{
Olivier Houchard9a86fcb2018-12-11 16:47:14 +01002270
Olivier Houchard9a86fcb2018-12-11 16:47:14 +01002271}
Christopher Faulet51dbc942018-09-13 09:05:15 +02002272
2273static int h1_wake(struct connection *conn)
2274{
Willy Tarreau3d2ee552018-12-19 14:12:10 +01002275 struct h1c *h1c = conn->ctx;
Olivier Houchard75159a92018-12-03 18:46:09 +01002276 int ret;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002277
Christopher Faulet6b81df72019-10-01 22:08:43 +02002278 TRACE_POINT(H1_EV_H1C_WAKE, conn);
2279
Christopher Faulet539e0292018-11-19 10:40:09 +01002280 h1_send(h1c);
Olivier Houchard75159a92018-12-03 18:46:09 +01002281 ret = h1_process(h1c);
2282 if (ret == 0) {
2283 struct h1s *h1s = h1c->h1s;
2284
Christopher Faulet6b81df72019-10-01 22:08:43 +02002285 if (h1s && h1s->cs && h1s->cs->data_cb->wake) {
2286 TRACE_POINT(H1_EV_STRM_WAKE, h1c->conn, h1s);
Olivier Houchard75159a92018-12-03 18:46:09 +01002287 ret = h1s->cs->data_cb->wake(h1s->cs);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002288 }
Olivier Houchard75159a92018-12-03 18:46:09 +01002289 }
2290 return ret;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002291}
2292
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002293/* Connection timeout management. The principle is that if there's no receipt
2294 * nor sending for a certain amount of time, the connection is closed.
2295 */
2296static struct task *h1_timeout_task(struct task *t, void *context, unsigned short state)
2297{
2298 struct h1c *h1c = context;
2299 int expired = tick_is_expired(t->expire, now_ms);
2300
Christopher Faulet6b81df72019-10-01 22:08:43 +02002301 TRACE_POINT(H1_EV_H1C_WAKE, h1c ? h1c->conn : NULL);
2302
2303 if (!expired && h1c) {
2304 TRACE_DEVEL("leaving (not expired)", H1_EV_H1C_WAKE, h1c->conn);
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002305 return t;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002306 }
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002307
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01002308 /* We're about to destroy the connection, so make sure nobody attempts
2309 * to steal it from us.
2310 */
Willy Tarreau4d82bf52020-06-28 00:19:17 +02002311 HA_SPIN_LOCK(OTHER_LOCK, &idle_conns[tid].toremove_lock);
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01002312
2313 if (h1c && h1c->conn->flags & CO_FL_LIST_MASK)
2314 MT_LIST_DEL(&h1c->conn->list);
2315
2316 /* Somebody already stole the connection from us, so we should not
2317 * free it, we just have to free the task.
2318 */
2319 if (!t->context)
2320 h1c = NULL;
2321
Willy Tarreau4d82bf52020-06-28 00:19:17 +02002322 HA_SPIN_UNLOCK(OTHER_LOCK, &idle_conns[tid].toremove_lock);
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01002323
Olivier Houchard3f795f72019-04-17 22:51:06 +02002324 task_destroy(t);
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002325
2326 if (!h1c) {
2327 /* resources were already deleted */
Christopher Faulet6b81df72019-10-01 22:08:43 +02002328 TRACE_DEVEL("leaving (not more h1c)", H1_EV_H1C_WAKE);
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002329 return NULL;
2330 }
2331
2332 h1c->task = NULL;
2333 /* If a stream is still attached to the mux, just set an error and wait
2334 * for the stream's timeout. Otherwise, release the mux. This is only ok
2335 * because same timeouts are used.
2336 */
Christopher Faulet6b81df72019-10-01 22:08:43 +02002337 if (h1c->h1s && h1c->h1s->cs) {
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002338 h1c->flags |= H1C_F_CS_ERROR;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002339 TRACE_STATE("error on h1c, h1s still attached (expired)", H1_EV_H1C_WAKE|H1_EV_H1C_ERR, h1c->conn, h1c->h1s);
2340 }
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002341 else
Christopher Faulet73c12072019-04-08 11:23:22 +02002342 h1_release(h1c);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002343
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002344 return NULL;
2345}
2346
Christopher Faulet51dbc942018-09-13 09:05:15 +02002347/*******************************************/
2348/* functions below are used by the streams */
2349/*******************************************/
Christopher Faulet73c12072019-04-08 11:23:22 +02002350
Christopher Faulet51dbc942018-09-13 09:05:15 +02002351/*
2352 * Attach a new stream to a connection
2353 * (Used for outgoing connections)
2354 */
Olivier Houchardf502aca2018-12-14 19:42:40 +01002355static struct conn_stream *h1_attach(struct connection *conn, struct session *sess)
Christopher Faulet51dbc942018-09-13 09:05:15 +02002356{
Willy Tarreau3d2ee552018-12-19 14:12:10 +01002357 struct h1c *h1c = conn->ctx;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002358 struct conn_stream *cs = NULL;
2359 struct h1s *h1s;
2360
Christopher Faulet6b81df72019-10-01 22:08:43 +02002361 TRACE_ENTER(H1_EV_STRM_NEW, conn);
2362 if (h1c->flags & H1C_F_CS_ERROR) {
2363 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 +02002364 goto end;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002365 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002366
2367 cs = cs_new(h1c->conn);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002368 if (!cs) {
2369 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 +02002370 goto end;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002371 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002372
Olivier Houchardf502aca2018-12-14 19:42:40 +01002373 h1s = h1s_create(h1c, cs, sess);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002374 if (h1s == NULL) {
2375 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 +02002376 goto end;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002377 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002378
Christopher Faulet6b81df72019-10-01 22:08:43 +02002379 TRACE_LEAVE(H1_EV_STRM_NEW, conn, h1s);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002380 return cs;
2381 end:
2382 cs_free(cs);
2383 return NULL;
2384}
2385
2386/* Retrieves a valid conn_stream from this connection, or returns NULL. For
2387 * this mux, it's easy as we can only store a single conn_stream.
2388 */
2389static const struct conn_stream *h1_get_first_cs(const struct connection *conn)
2390{
Willy Tarreau3d2ee552018-12-19 14:12:10 +01002391 struct h1c *h1c = conn->ctx;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002392 struct h1s *h1s = h1c->h1s;
2393
2394 if (h1s)
2395 return h1s->cs;
2396
2397 return NULL;
2398}
2399
Christopher Faulet73c12072019-04-08 11:23:22 +02002400static void h1_destroy(void *ctx)
Christopher Faulet51dbc942018-09-13 09:05:15 +02002401{
Christopher Faulet73c12072019-04-08 11:23:22 +02002402 struct h1c *h1c = ctx;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002403
Christopher Faulet6b81df72019-10-01 22:08:43 +02002404 TRACE_POINT(H1_EV_H1C_END, h1c->conn);
Christopher Faulet39a96ee2019-04-08 10:52:21 +02002405 if (!h1c->h1s || !h1c->conn || h1c->conn->ctx != h1c)
Christopher Faulet73c12072019-04-08 11:23:22 +02002406 h1_release(h1c);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002407}
2408
2409/*
2410 * Detach the stream from the connection and possibly release the connection.
2411 */
2412static void h1_detach(struct conn_stream *cs)
2413{
2414 struct h1s *h1s = cs->ctx;
2415 struct h1c *h1c;
Olivier Houchardf502aca2018-12-14 19:42:40 +01002416 struct session *sess;
Olivier Houchard8a786902018-12-15 16:05:40 +01002417 int is_not_first;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002418
Christopher Faulet6b81df72019-10-01 22:08:43 +02002419 TRACE_ENTER(H1_EV_STRM_END, h1s ? h1s->h1c->conn : NULL, h1s);
2420
Christopher Faulet51dbc942018-09-13 09:05:15 +02002421 cs->ctx = NULL;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002422 if (!h1s) {
2423 TRACE_LEAVE(H1_EV_STRM_END);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002424 return;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002425 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002426
Olivier Houchardf502aca2018-12-14 19:42:40 +01002427 sess = h1s->sess;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002428 h1c = h1s->h1c;
2429 h1s->cs = NULL;
2430
Olivier Houchard8a786902018-12-15 16:05:40 +01002431 is_not_first = h1s->flags & H1S_F_NOT_FIRST;
2432 h1s_destroy(h1s);
2433
Christopher Fauletaaa67bc2019-12-05 10:23:37 +01002434 if (conn_is_back(h1c->conn) && (h1c->flags & H1C_F_CS_IDLE)) {
Christopher Fauletf1204b82019-07-19 14:51:06 +02002435 /* If there are any excess server data in the input buffer,
2436 * release it and close the connection ASAP (some data may
2437 * remain in the output buffer). This happens if a server sends
2438 * invalid responses. So in such case, we don't want to reuse
2439 * the connection
Christopher Faulet03627242019-07-19 11:34:08 +02002440 */
Christopher Fauletf1204b82019-07-19 14:51:06 +02002441 if (b_data(&h1c->ibuf)) {
2442 h1_release_buf(h1c, &h1c->ibuf);
Christopher Fauletaaa67bc2019-12-05 10:23:37 +01002443 h1c->flags = (h1c->flags & ~H1C_F_CS_IDLE) | H1C_F_CS_SHUTW_NOW;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002444 TRACE_DEVEL("remaining data on detach, kill connection", H1_EV_STRM_END|H1_EV_H1C_END);
Christopher Fauletf1204b82019-07-19 14:51:06 +02002445 goto release;
2446 }
Christopher Faulet03627242019-07-19 11:34:08 +02002447
Christopher Faulet9400a392018-11-23 23:10:39 +01002448 /* Never ever allow to reuse a connection from a non-reuse backend */
Olivier Houchard44d59142018-12-13 18:46:22 +01002449 if ((h1c->px->options & PR_O_REUSE_MASK) == PR_O_REUSE_NEVR)
Christopher Faulet9400a392018-11-23 23:10:39 +01002450 h1c->conn->flags |= CO_FL_PRIVATE;
2451
Olivier Houchard2444aa52020-01-20 13:56:01 +01002452 if (!(h1c->conn->owner) && (h1c->conn->flags & CO_FL_PRIVATE)) {
Olivier Houchardf502aca2018-12-14 19:42:40 +01002453 h1c->conn->owner = sess;
Olivier Houchard351411f2018-12-27 17:20:54 +01002454 if (!session_add_conn(sess, h1c->conn, h1c->conn->target)) {
2455 h1c->conn->owner = NULL;
Olivier Houchard2444aa52020-01-20 13:56:01 +01002456 h1c->conn->mux->destroy(h1c);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002457 goto end;
Olivier Houchard351411f2018-12-27 17:20:54 +01002458 }
Olivier Houchard2444aa52020-01-20 13:56:01 +01002459 if (session_check_idle_conn(sess, h1c->conn)) {
Olivier Houcharda4d4fdf2018-12-14 19:27:06 +01002460 /* The connection got destroyed, let's leave */
Christopher Faulet6b81df72019-10-01 22:08:43 +02002461 TRACE_DEVEL("outgoing connection killed", H1_EV_STRM_END|H1_EV_H1C_END);
2462 goto end;
2463 }
Olivier Houcharda4d4fdf2018-12-14 19:27:06 +01002464 }
Olivier Houchard2444aa52020-01-20 13:56:01 +01002465 if (!(h1c->conn->flags & CO_FL_PRIVATE)) {
2466 if (h1c->conn->owner == sess)
2467 h1c->conn->owner = NULL;
Olivier Houchard3c49c1b2020-03-22 19:56:03 +01002468 h1c->conn->xprt->subscribe(h1c->conn, h1c->conn->xprt_ctx, SUB_RETRY_RECV, &h1c->wait_event);
Olivier Houcharddc2f2752020-02-13 19:12:07 +01002469 if (!srv_add_to_idle_list(objt_server(h1c->conn->target), h1c->conn, is_not_first)) {
Olivier Houchard2444aa52020-01-20 13:56:01 +01002470 /* The server doesn't want it, let's kill the connection right away */
2471 h1c->conn->mux->destroy(h1c);
2472 TRACE_DEVEL("outgoing connection killed", H1_EV_STRM_END|H1_EV_H1C_END);
2473 goto end;
Christopher Faulet9400a392018-11-23 23:10:39 +01002474 }
Olivier Houchard199d4fa2020-03-22 23:25:51 +01002475 /* At this point, the connection has been added to the
2476 * server idle list, so another thread may already have
2477 * hijacked it, so we can't do anything with it.
2478 */
Olivier Houchard2444aa52020-01-20 13:56:01 +01002479 return;
Christopher Faulet9400a392018-11-23 23:10:39 +01002480 }
2481 }
2482
Christopher Fauletf1204b82019-07-19 14:51:06 +02002483 release:
Christopher Faulet3ac0f432019-06-28 17:41:42 +02002484 /* We don't want to close right now unless the connection is in error or shut down for writes */
Christopher Faulet37243bc2019-07-11 15:40:25 +02002485 if ((h1c->flags & (H1C_F_CS_ERROR|H1C_F_CS_SHUTDOWN|H1C_F_UPG_H2C)) ||
2486 (h1c->conn->flags & (CO_FL_ERROR|CO_FL_SOCK_WR_SH)) ||
2487 ((h1c->flags & H1C_F_CS_SHUTW_NOW) && !b_data(&h1c->obuf)) ||
Christopher Faulet6b81df72019-10-01 22:08:43 +02002488 !h1c->conn->owner) {
2489 TRACE_DEVEL("killing dead connection", H1_EV_STRM_END, h1c->conn);
Christopher Faulet73c12072019-04-08 11:23:22 +02002490 h1_release(h1c);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002491 }
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002492 else {
Olivier Houchard69664412020-03-25 12:24:11 +01002493 /* If we have a new request, process it immediately */
Olivier Houchardc3500c32020-03-25 17:05:21 +01002494 if (unlikely(b_data(&h1c->ibuf)))
Olivier Houchard69664412020-03-25 12:24:11 +01002495 h1_process(h1c);
2496 else
2497 h1c->conn->xprt->subscribe(h1c->conn, h1c->conn->xprt_ctx, SUB_RETRY_RECV, &h1c->wait_event);
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002498 if (h1c->task) {
2499 h1c->task->expire = TICK_ETERNITY;
Willy Tarreauca397472020-04-28 19:48:41 +02002500 if ((!h1c->h1s && !conn_is_back(h1c->conn)) || b_data(&h1c->obuf)) {
2501 /* front connections waiting for a stream, as well as any connection with
2502 * pending data, need a timeout.
2503 */
Christopher Faulet666a0c42019-01-08 11:12:04 +01002504 h1c->task->expire = tick_add(now_ms, ((h1c->flags & (H1C_F_CS_SHUTW_NOW|H1C_F_CS_SHUTDOWN))
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002505 ? h1c->shut_timeout
2506 : h1c->timeout));
2507 task_queue(h1c->task);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002508 TRACE_DEVEL("refreshing connection's timeout", H1_EV_STRM_END, h1c->conn);
Christopher Fauletb8093cf2019-01-03 16:27:28 +01002509 }
2510 }
2511 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02002512 end:
2513 TRACE_LEAVE(H1_EV_STRM_END);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002514}
2515
2516
2517static void h1_shutr(struct conn_stream *cs, enum cs_shr_mode mode)
2518{
2519 struct h1s *h1s = cs->ctx;
Christopher Faulet7f366362019-04-08 10:51:20 +02002520 struct h1c *h1c;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002521
2522 if (!h1s)
2523 return;
Christopher Faulet7f366362019-04-08 10:51:20 +02002524 h1c = h1s->h1c;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002525
Christopher Faulet6b81df72019-10-01 22:08:43 +02002526 TRACE_ENTER(H1_EV_STRM_SHUT, h1c->conn, h1s);
2527
2528 if (cs->flags & CS_FL_KILL_CONN) {
2529 TRACE_STATE("stream wants to kill the connection", H1_EV_STRM_SHUT, h1c->conn, h1s);
2530 goto do_shutr;
2531 }
2532 if (h1c->conn->flags & (CO_FL_ERROR | CO_FL_SOCK_RD_SH | CO_FL_SOCK_WR_SH)) {
2533 TRACE_STATE("shutdown on connection (error|rd_sh|wr_sh)", H1_EV_STRM_SHUT, h1c->conn, h1s);
Christopher Faulet7f366362019-04-08 10:51:20 +02002534 goto do_shutr;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002535 }
Christopher Faulet7f366362019-04-08 10:51:20 +02002536
Christopher Faulet6b81df72019-10-01 22:08:43 +02002537 if ((h1c->flags & H1C_F_UPG_H2C) || (h1s->flags & H1S_F_WANT_KAL)) {
2538 TRACE_STATE("keep connection alive (upg_h2c|want_kal)", H1_EV_STRM_SHUT, h1c->conn, h1s);
2539 goto end;
2540 }
Christopher Fauletf2824e62018-10-01 12:12:37 +02002541
Christopher Faulet7f366362019-04-08 10:51:20 +02002542 do_shutr:
Christopher Faulet51dbc942018-09-13 09:05:15 +02002543 /* NOTE: Be sure to handle abort (cf. h2_shutr) */
2544 if (cs->flags & CS_FL_SHR)
Christopher Faulet6b81df72019-10-01 22:08:43 +02002545 goto end;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002546 if (conn_xprt_ready(cs->conn) && cs->conn->xprt->shutr)
Olivier Houcharde179d0e2019-03-21 18:27:17 +01002547 cs->conn->xprt->shutr(cs->conn, cs->conn->xprt_ctx,
Christopher Faulet6b81df72019-10-01 22:08:43 +02002548 (mode == CS_SHR_DRAIN));
Christopher Faulet6b81df72019-10-01 22:08:43 +02002549 end:
2550 TRACE_LEAVE(H1_EV_STRM_SHUT, h1c->conn, h1s);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002551}
2552
2553static void h1_shutw(struct conn_stream *cs, enum cs_shw_mode mode)
2554{
2555 struct h1s *h1s = cs->ctx;
2556 struct h1c *h1c;
2557
2558 if (!h1s)
2559 return;
2560 h1c = h1s->h1c;
2561
Christopher Faulet6b81df72019-10-01 22:08:43 +02002562 TRACE_ENTER(H1_EV_STRM_SHUT, h1c->conn, h1s);
2563
2564 if (cs->flags & CS_FL_KILL_CONN) {
2565 TRACE_STATE("stream wants to kill the connection", H1_EV_STRM_SHUT, h1c->conn, h1s);
Christopher Faulet7f366362019-04-08 10:51:20 +02002566 goto do_shutw;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002567 }
2568 if (h1c->conn->flags & (CO_FL_ERROR | CO_FL_SOCK_RD_SH | CO_FL_SOCK_WR_SH)) {
2569 TRACE_STATE("shutdown on connection (error|rd_sh|wr_sh)", H1_EV_STRM_SHUT, h1c->conn, h1s);
2570 goto do_shutw;
2571 }
Olivier Houchardd2e88c72018-12-19 15:55:23 +01002572
Christopher Faulet0ef372a2019-04-08 10:57:20 +02002573 if ((h1c->flags & H1C_F_UPG_H2C) ||
Christopher Faulet6b81df72019-10-01 22:08:43 +02002574 ((h1s->flags & H1S_F_WANT_KAL) && h1s->req.state == H1_MSG_DONE && h1s->res.state == H1_MSG_DONE)) {
2575 TRACE_STATE("keep connection alive (upg_h2c|want_kal)", H1_EV_STRM_SHUT, h1c->conn, h1s);
2576 goto end;
2577 }
Christopher Fauletf2824e62018-10-01 12:12:37 +02002578
Christopher Faulet7f366362019-04-08 10:51:20 +02002579 do_shutw:
Christopher Faulet51dbc942018-09-13 09:05:15 +02002580 h1c->flags |= H1C_F_CS_SHUTW_NOW;
2581 if ((cs->flags & CS_FL_SHW) || b_data(&h1c->obuf))
Christopher Faulet6b81df72019-10-01 22:08:43 +02002582 goto end;
Christopher Faulet666a0c42019-01-08 11:12:04 +01002583 h1_shutw_conn(cs->conn, mode);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002584 end:
2585 TRACE_LEAVE(H1_EV_STRM_SHUT, h1c->conn, h1s);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002586}
2587
Christopher Faulet666a0c42019-01-08 11:12:04 +01002588static void h1_shutw_conn(struct connection *conn, enum cs_shw_mode mode)
Christopher Faulet51dbc942018-09-13 09:05:15 +02002589{
Willy Tarreau3d2ee552018-12-19 14:12:10 +01002590 struct h1c *h1c = conn->ctx;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002591
Christopher Faulet6b81df72019-10-01 22:08:43 +02002592 TRACE_ENTER(H1_EV_STRM_SHUT, conn, h1c->h1s);
Christopher Faulet666a0c42019-01-08 11:12:04 +01002593 conn_xprt_shutw(conn);
2594 conn_sock_shutw(conn, (mode == CS_SHW_NORMAL));
Christopher Faulet7b109f22019-12-05 11:18:31 +01002595 h1c->flags = (h1c->flags & ~H1C_F_CS_SHUTW_NOW) | H1C_F_CS_SHUTDOWN;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002596 TRACE_LEAVE(H1_EV_STRM_SHUT, conn, h1c->h1s);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002597}
2598
Willy Tarreauee1a6fc2020-01-17 07:52:13 +01002599/* Called from the upper layer, to unsubscribe <es> from events <event_type>
2600 * The <es> pointer is not allowed to differ from the one passed to the
2601 * subscribe() call. It always returns zero.
2602 */
2603static int h1_unsubscribe(struct conn_stream *cs, int event_type, struct wait_event *es)
Christopher Faulet51dbc942018-09-13 09:05:15 +02002604{
Christopher Faulet51dbc942018-09-13 09:05:15 +02002605 struct h1s *h1s = cs->ctx;
2606
2607 if (!h1s)
2608 return 0;
2609
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002610 BUG_ON(event_type & ~(SUB_RETRY_SEND|SUB_RETRY_RECV));
Willy Tarreauee1a6fc2020-01-17 07:52:13 +01002611 BUG_ON(h1s->subs && h1s->subs != es);
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002612
Willy Tarreauee1a6fc2020-01-17 07:52:13 +01002613 es->events &= ~event_type;
2614 if (!es->events)
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002615 h1s->subs = NULL;
2616
2617 if (event_type & SUB_RETRY_RECV)
Christopher Faulet6b81df72019-10-01 22:08:43 +02002618 TRACE_DEVEL("unsubscribe(recv)", H1_EV_STRM_RECV, h1s->h1c->conn, h1s);
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002619
2620 if (event_type & SUB_RETRY_SEND)
Christopher Faulet6b81df72019-10-01 22:08:43 +02002621 TRACE_DEVEL("unsubscribe(send)", H1_EV_STRM_SEND, h1s->h1c->conn, h1s);
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002622
Christopher Faulet51dbc942018-09-13 09:05:15 +02002623 return 0;
2624}
2625
Willy Tarreauee1a6fc2020-01-17 07:52:13 +01002626/* Called from the upper layer, to subscribe <es> to events <event_type>. The
2627 * event subscriber <es> is not allowed to change from a previous call as long
2628 * as at least one event is still subscribed. The <event_type> must only be a
2629 * combination of SUB_RETRY_RECV and SUB_RETRY_SEND. It always returns 0, unless
2630 * the conn_stream <cs> was already detached, in which case it will return -1.
2631 */
2632static int h1_subscribe(struct conn_stream *cs, int event_type, struct wait_event *es)
Christopher Faulet51dbc942018-09-13 09:05:15 +02002633{
Christopher Faulet51dbc942018-09-13 09:05:15 +02002634 struct h1s *h1s = cs->ctx;
Christopher Faulet51bb1852019-09-04 10:22:34 +02002635 struct h1c *h1c;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002636
2637 if (!h1s)
2638 return -1;
2639
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002640 BUG_ON(event_type & ~(SUB_RETRY_SEND|SUB_RETRY_RECV));
Willy Tarreauee1a6fc2020-01-17 07:52:13 +01002641 BUG_ON(h1s->subs && h1s->subs != es);
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002642
Willy Tarreauee1a6fc2020-01-17 07:52:13 +01002643 es->events |= event_type;
2644 h1s->subs = es;
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002645
2646 if (event_type & SUB_RETRY_RECV)
Christopher Faulet6b81df72019-10-01 22:08:43 +02002647 TRACE_DEVEL("subscribe(recv)", H1_EV_STRM_RECV, h1s->h1c->conn, h1s);
Willy Tarreau1b0d4d12020-01-16 11:03:19 +01002648
2649
Christopher Faulet6b81df72019-10-01 22:08:43 +02002650 if (event_type & SUB_RETRY_SEND) {
2651 TRACE_DEVEL("subscribe(send)", H1_EV_STRM_SEND, h1s->h1c->conn, h1s);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002652 /*
2653 * If the conn_stream attempt to subscribe, and the
2654 * mux isn't subscribed to the connection, then it
2655 * probably means the connection wasn't established
2656 * yet, so we have to subscribe.
2657 */
2658 h1c = h1s->h1c;
2659 if (!(h1c->wait_event.events & SUB_RETRY_SEND))
2660 h1c->conn->xprt->subscribe(h1c->conn,
2661 h1c->conn->xprt_ctx,
2662 SUB_RETRY_SEND,
2663 &h1c->wait_event);
2664 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02002665 return 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002666}
2667
2668/* Called from the upper layer, to receive data */
2669static size_t h1_rcv_buf(struct conn_stream *cs, struct buffer *buf, size_t count, int flags)
2670{
2671 struct h1s *h1s = cs->ctx;
Christopher Faulet539e0292018-11-19 10:40:09 +01002672 struct h1c *h1c = h1s->h1c;
Olivier Houcharddedd3062019-07-26 15:12:38 +02002673 struct h1m *h1m = (!conn_is_back(cs->conn) ? &h1s->req : &h1s->res);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002674 size_t ret = 0;
2675
Christopher Faulet6b81df72019-10-01 22:08:43 +02002676 TRACE_ENTER(H1_EV_STRM_RECV, h1c->conn, h1s,, (size_t[]){count});
Christopher Faulet539e0292018-11-19 10:40:09 +01002677 if (!(h1c->flags & H1C_F_IN_ALLOC))
Christopher Faulet30db3d72019-05-17 15:35:33 +02002678 ret = h1_process_input(h1c, buf, count);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002679 else
2680 TRACE_DEVEL("h1c ibuf not allocated", H1_EV_H1C_RECV|H1_EV_H1C_BLK, h1c->conn);
Christopher Faulet1be55f92018-10-02 15:59:23 +02002681
Christopher Faulete18777b2019-04-16 16:46:36 +02002682 if (flags & CO_RFL_BUF_FLUSH) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002683 if (h1m->state != H1_MSG_TUNNEL || (h1m->state == H1_MSG_DATA && h1m->curr_len)) {
Christopher Faulete18777b2019-04-16 16:46:36 +02002684 h1s->flags |= H1S_F_BUF_FLUSH;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002685 TRACE_STATE("flush stream's buffer", H1_EV_STRM_RECV, h1c->conn, h1s);
2686 }
Christopher Faulete18777b2019-04-16 16:46:36 +02002687 }
Olivier Houchard02bac852019-08-22 18:34:25 +02002688 else {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002689 if (h1s->flags & H1S_F_SPLICED_DATA) {
2690 h1s->flags &= ~H1S_F_SPLICED_DATA;
2691 TRACE_STATE("disable splicing", H1_EV_STRM_RECV, h1c->conn, h1s);
2692 }
2693 if (h1m->state != H1_MSG_DONE && !(h1c->wait_event.events & SUB_RETRY_RECV))
Willy Tarreau2c1f37d2020-03-04 17:50:02 +01002694 h1c->conn->xprt->subscribe(h1c->conn, h1c->conn->xprt_ctx, SUB_RETRY_RECV, &h1c->wait_event);
Christopher Faulet51dbc942018-09-13 09:05:15 +02002695 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02002696 TRACE_LEAVE(H1_EV_STRM_RECV, h1c->conn, h1s,, (size_t[]){ret});
Christopher Faulet51dbc942018-09-13 09:05:15 +02002697 return ret;
2698}
2699
2700
2701/* Called from the upper layer, to send data */
2702static size_t h1_snd_buf(struct conn_stream *cs, struct buffer *buf, size_t count, int flags)
2703{
2704 struct h1s *h1s = cs->ctx;
2705 struct h1c *h1c;
Christopher Faulet5d37dac2018-11-22 10:58:42 +01002706 size_t total = 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002707
2708 if (!h1s)
Christopher Faulet5d37dac2018-11-22 10:58:42 +01002709 return 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002710 h1c = h1s->h1c;
Olivier Houchard305d5ab2019-07-24 18:07:06 +02002711
Christopher Faulet6b81df72019-10-01 22:08:43 +02002712 TRACE_ENTER(H1_EV_STRM_SEND, h1c->conn, h1s,, (size_t[]){count});
2713
Olivier Houchard305d5ab2019-07-24 18:07:06 +02002714 /* If we're not connected yet, or we're waiting for a handshake, stop
2715 * now, as we don't want to remove everything from the channel buffer
2716 * before we're sure we can send it.
2717 */
Willy Tarreau911db9b2020-01-23 16:27:54 +01002718 if (h1c->conn->flags & CO_FL_WAIT_XPRT) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002719 TRACE_LEAVE(H1_EV_STRM_SEND, h1c->conn, h1s);
Christopher Faulet3b88b8d2018-10-26 17:36:03 +02002720 return 0;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002721 }
Christopher Faulet51dbc942018-09-13 09:05:15 +02002722
Christopher Faulet46230362019-10-17 16:04:20 +02002723 /* Inherit some flags from the upper layer */
2724 h1c->flags &= ~(H1C_F_CO_MSG_MORE|H1C_F_CO_STREAMER);
2725 if (flags & CO_SFL_MSG_MORE)
2726 h1c->flags |= H1C_F_CO_MSG_MORE;
2727 if (flags & CO_SFL_STREAMER)
2728 h1c->flags |= H1C_F_CO_STREAMER;
2729
Christopher Fauletc31872f2019-06-04 22:09:36 +02002730 while (count) {
Christopher Faulet5d37dac2018-11-22 10:58:42 +01002731 size_t ret = 0;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002732
Christopher Faulet5d37dac2018-11-22 10:58:42 +01002733 if (!(h1c->flags & (H1C_F_OUT_FULL|H1C_F_OUT_ALLOC)))
2734 ret = h1_process_output(h1c, buf, count);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002735 else
2736 TRACE_DEVEL("h1c obuf not allocated", H1_EV_STRM_SEND|H1_EV_H1S_BLK, h1c->conn, h1s);
Olivier Houchardc89a42f2020-06-19 16:15:05 +02002737
2738 if ((count - ret) > 0)
2739 h1c->flags |= H1C_F_CO_MSG_MORE;
2740
Christopher Faulet5d37dac2018-11-22 10:58:42 +01002741 if (!ret)
2742 break;
2743 total += ret;
Christopher Fauletc31872f2019-06-04 22:09:36 +02002744 count -= ret;
Olivier Houchard68787ef2020-01-15 19:13:32 +01002745 if ((h1c->wait_event.events & SUB_RETRY_SEND) || !h1_send(h1c))
Christopher Faulet5d37dac2018-11-22 10:58:42 +01002746 break;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002747 }
Christopher Fauletf96c3222018-11-20 18:38:01 +01002748
Christopher Faulet6b81df72019-10-01 22:08:43 +02002749 TRACE_LEAVE(H1_EV_STRM_SEND, h1c->conn, h1s,, (size_t[]){total});
Christopher Faulet5d37dac2018-11-22 10:58:42 +01002750 return total;
Christopher Faulet51dbc942018-09-13 09:05:15 +02002751}
2752
Willy Tarreaue5733232019-05-22 19:24:06 +02002753#if defined(USE_LINUX_SPLICE)
Christopher Faulet1be55f92018-10-02 15:59:23 +02002754/* Send and get, using splicing */
2755static int h1_rcv_pipe(struct conn_stream *cs, struct pipe *pipe, unsigned int count)
2756{
2757 struct h1s *h1s = cs->ctx;
2758 struct h1m *h1m = (!conn_is_back(cs->conn) ? &h1s->req : &h1s->res);
2759 int ret = 0;
2760
Christopher Faulet6b81df72019-10-01 22:08:43 +02002761 TRACE_ENTER(H1_EV_STRM_RECV, cs->conn, h1s,, (size_t[]){count});
2762
Christopher Faulet9fa40c42019-11-05 16:24:27 +01002763 if ((h1m->flags & H1_MF_CHNK) || (h1m->state != H1_MSG_DATA && h1m->state != H1_MSG_TUNNEL)) {
Christopher Faulete18777b2019-04-16 16:46:36 +02002764 h1s->flags &= ~(H1S_F_BUF_FLUSH|H1S_F_SPLICED_DATA);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002765 TRACE_STATE("disable splicing on !(msg_data|msg_tunnel)", H1_EV_STRM_RECV, cs->conn, h1s);
2766 if (!(h1s->h1c->wait_event.events & SUB_RETRY_RECV)) {
2767 TRACE_STATE("restart receiving data, subscribing", H1_EV_STRM_RECV, cs->conn, h1s);
Christopher Faulet1146f972019-05-29 14:35:24 +02002768 cs->conn->xprt->subscribe(cs->conn, cs->conn->xprt_ctx, SUB_RETRY_RECV, &h1s->h1c->wait_event);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002769 }
Christopher Faulete18777b2019-04-16 16:46:36 +02002770 goto end;
2771 }
2772
Willy Tarreaufbdf90a2019-06-03 13:42:54 +02002773 if (h1s_data_pending(h1s)) {
Christopher Fauletd44ad5b2018-11-19 21:52:12 +01002774 h1s->flags |= H1S_F_BUF_FLUSH;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002775 TRACE_STATE("flush input buffer before splicing", H1_EV_STRM_RECV, cs->conn, h1s);
Christopher Faulet1be55f92018-10-02 15:59:23 +02002776 goto end;
Christopher Fauletd44ad5b2018-11-19 21:52:12 +01002777 }
2778
2779 h1s->flags &= ~H1S_F_BUF_FLUSH;
2780 h1s->flags |= H1S_F_SPLICED_DATA;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002781 TRACE_STATE("enable splicing", H1_EV_STRM_RECV, cs->conn, h1s);
Christopher Faulet1be55f92018-10-02 15:59:23 +02002782 if (h1m->state == H1_MSG_DATA && count > h1m->curr_len)
2783 count = h1m->curr_len;
Olivier Houcharde179d0e2019-03-21 18:27:17 +01002784 ret = cs->conn->xprt->rcv_pipe(cs->conn, cs->conn->xprt_ctx, pipe, count);
Christopher Faulet1146f972019-05-29 14:35:24 +02002785 if (h1m->state == H1_MSG_DATA && ret >= 0) {
Christopher Faulet1be55f92018-10-02 15:59:23 +02002786 h1m->curr_len -= ret;
Christopher Faulet6b81df72019-10-01 22:08:43 +02002787 if (!h1m->curr_len) {
Christopher Faulete18777b2019-04-16 16:46:36 +02002788 h1s->flags &= ~(H1S_F_BUF_FLUSH|H1S_F_SPLICED_DATA);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002789 TRACE_STATE("disable splicing on !curr_len", H1_EV_STRM_RECV, cs->conn, h1s);
2790 }
Christopher Faulete18777b2019-04-16 16:46:36 +02002791 }
2792
Christopher Faulet1be55f92018-10-02 15:59:23 +02002793 end:
Christopher Faulet038ad812019-04-17 11:03:22 +02002794 if (conn_xprt_read0_pending(cs->conn)) {
Willy Tarreauc493c9c2019-06-03 14:18:22 +02002795 h1s->flags |= H1S_F_REOS;
Christopher Fauletf3158e92019-11-15 11:14:23 +01002796 h1s->flags &= ~(H1S_F_BUF_FLUSH|H1S_F_SPLICED_DATA);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002797 TRACE_STATE("read0 on connection", H1_EV_STRM_RECV, cs->conn, h1s);
Christopher Faulet038ad812019-04-17 11:03:22 +02002798 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02002799
Willy Tarreau17ccd1a2020-01-17 16:19:34 +01002800 if (h1m->state != H1_MSG_DATA || !h1m->curr_len)
2801 cs->flags &= ~CS_FL_MAY_SPLICE;
2802
Christopher Faulet6b81df72019-10-01 22:08:43 +02002803 TRACE_LEAVE(H1_EV_STRM_RECV, cs->conn, h1s);
Christopher Faulet1be55f92018-10-02 15:59:23 +02002804 return ret;
Christopher Faulet1be55f92018-10-02 15:59:23 +02002805}
2806
2807static int h1_snd_pipe(struct conn_stream *cs, struct pipe *pipe)
2808{
2809 struct h1s *h1s = cs->ctx;
Christopher Faulet1be55f92018-10-02 15:59:23 +02002810 int ret = 0;
2811
Christopher Faulet6b81df72019-10-01 22:08:43 +02002812 TRACE_ENTER(H1_EV_STRM_SEND, cs->conn, h1s,, (size_t[]){pipe->data});
2813
Christopher Faulet1be55f92018-10-02 15:59:23 +02002814 if (b_data(&h1s->h1c->obuf))
2815 goto end;
2816
Olivier Houcharde179d0e2019-03-21 18:27:17 +01002817 ret = cs->conn->xprt->snd_pipe(cs->conn, cs->conn->xprt_ctx, pipe);
Christopher Faulet1be55f92018-10-02 15:59:23 +02002818 end:
Christopher Fauletd44ad5b2018-11-19 21:52:12 +01002819 if (pipe->data) {
Christopher Faulet6b81df72019-10-01 22:08:43 +02002820 if (!(h1s->h1c->wait_event.events & SUB_RETRY_SEND)) {
2821 TRACE_STATE("more data to send, subscribing", H1_EV_STRM_SEND, cs->conn, h1s);
Olivier Houcharde179d0e2019-03-21 18:27:17 +01002822 cs->conn->xprt->subscribe(cs->conn, cs->conn->xprt_ctx, SUB_RETRY_SEND, &h1s->h1c->wait_event);
Christopher Faulet6b81df72019-10-01 22:08:43 +02002823 }
Christopher Fauletd44ad5b2018-11-19 21:52:12 +01002824 }
Christopher Faulet6b81df72019-10-01 22:08:43 +02002825
2826 TRACE_LEAVE(H1_EV_STRM_SEND, cs->conn, h1s);
Christopher Faulet1be55f92018-10-02 15:59:23 +02002827 return ret;
2828}
2829#endif
2830
Olivier Houchard9b8e11e2019-10-25 16:19:26 +02002831static int h1_ctl(struct connection *conn, enum mux_ctl_type mux_ctl, void *output)
2832{
2833 int ret = 0;
2834 switch (mux_ctl) {
2835 case MUX_STATUS:
Willy Tarreau911db9b2020-01-23 16:27:54 +01002836 if (!(conn->flags & CO_FL_WAIT_XPRT))
Olivier Houchard9b8e11e2019-10-25 16:19:26 +02002837 ret |= MUX_STATUS_READY;
2838 return ret;
2839 default:
2840 return -1;
2841 }
2842}
2843
Olivier Houcharda8f6b432018-12-21 15:20:29 +01002844/* for debugging with CLI's "show fd" command */
2845static void h1_show_fd(struct buffer *msg, struct connection *conn)
2846{
2847 struct h1c *h1c = conn->ctx;
2848 struct h1s *h1s = h1c->h1s;
2849
Christopher Fauletf376a312019-01-04 15:16:06 +01002850 chunk_appendf(msg, " h1c.flg=0x%x .sub=%d .ibuf=%u@%p+%u/%u .obuf=%u@%p+%u/%u",
2851 h1c->flags, h1c->wait_event.events,
Olivier Houcharda8f6b432018-12-21 15:20:29 +01002852 (unsigned int)b_data(&h1c->ibuf), b_orig(&h1c->ibuf),
2853 (unsigned int)b_head_ofs(&h1c->ibuf), (unsigned int)b_size(&h1c->ibuf),
2854 (unsigned int)b_data(&h1c->obuf), b_orig(&h1c->obuf),
2855 (unsigned int)b_head_ofs(&h1c->obuf), (unsigned int)b_size(&h1c->obuf));
2856
2857 if (h1s) {
2858 char *method;
2859
2860 if (h1s->meth < HTTP_METH_OTHER)
2861 method = http_known_methods[h1s->meth].ptr;
2862 else
2863 method = "UNKNOWN";
2864 chunk_appendf(msg, " h1s=%p h1s.flg=0x%x .req.state=%s .res.state=%s"
2865 " .meth=%s status=%d",
2866 h1s, h1s->flags,
2867 h1m_state_str(h1s->req.state),
2868 h1m_state_str(h1s->res.state), method, h1s->status);
2869 if (h1s->cs)
2870 chunk_appendf(msg, " .cs.flg=0x%08x .cs.data=%p",
2871 h1s->cs->flags, h1s->cs->data);
2872 }
Christopher Faulet98fbe952019-07-22 16:18:24 +02002873}
2874
2875
2876/* Add an entry in the headers map. Returns -1 on error and 0 on success. */
2877static int add_hdr_case_adjust(const char *from, const char *to, char **err)
2878{
2879 struct h1_hdr_entry *entry;
2880
2881 /* Be sure there is a non-empty <to> */
2882 if (!strlen(to)) {
2883 memprintf(err, "expect <to>");
2884 return -1;
2885 }
2886
2887 /* Be sure only the case differs between <from> and <to> */
2888 if (strcasecmp(from, to)) {
2889 memprintf(err, "<from> and <to> must not differ execpt the case");
2890 return -1;
2891 }
2892
2893 /* Be sure <from> does not already existsin the tree */
2894 if (ebis_lookup(&hdrs_map.map, from)) {
2895 memprintf(err, "duplicate entry '%s'", from);
2896 return -1;
2897 }
2898
2899 /* Create the entry and insert it in the tree */
2900 entry = malloc(sizeof(*entry));
2901 if (!entry) {
2902 memprintf(err, "out of memory");
2903 return -1;
2904 }
2905
2906 entry->node.key = strdup(from);
2907 entry->name.ptr = strdup(to);
2908 entry->name.len = strlen(to);
2909 if (!entry->node.key || !entry->name.ptr) {
2910 free(entry->node.key);
Tim Duesterhused526372020-03-05 17:56:33 +01002911 istfree(&entry->name);
Christopher Faulet98fbe952019-07-22 16:18:24 +02002912 free(entry);
2913 memprintf(err, "out of memory");
2914 return -1;
2915 }
2916 ebis_insert(&hdrs_map.map, &entry->node);
2917 return 0;
2918}
2919
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01002920/* Migrate the the connection to the current thread.
2921 * Return 0 if successful, non-zero otherwise.
2922 * Expected to be called with the old thread lock held.
2923 */
2924static int h1_takeover(struct connection *conn)
2925{
2926 struct h1c *h1c = conn->ctx;
2927
2928 if (fd_takeover(conn->handle.fd, conn) != 0)
2929 return -1;
2930 if (h1c->wait_event.events)
2931 h1c->conn->xprt->unsubscribe(h1c->conn, h1c->conn->xprt_ctx,
2932 h1c->wait_event.events, &h1c->wait_event);
2933 /* To let the tasklet know it should free itself, and do nothing else,
2934 * set its context to NULL.
2935 */
2936 h1c->wait_event.tasklet->context = NULL;
2937 tasklet_wakeup(h1c->wait_event.tasklet);
2938 if (h1c->task) {
2939 h1c->task->context = NULL;
2940 /* Wake the task, to let it free itself */
2941 task_wakeup(h1c->task, TASK_WOKEN_OTHER);
2942
2943 h1c->task = task_new(tid_bit);
2944 if (!h1c->task) {
2945 h1_release(h1c);
2946 return -1;
2947 }
2948 h1c->task->process = h1_timeout_task;
2949 h1c->task->context = h1c;
2950 }
2951 h1c->wait_event.tasklet = tasklet_new();
2952 if (!h1c->wait_event.tasklet) {
2953 h1_release(h1c);
2954 return -1;
2955 }
2956 h1c->wait_event.tasklet->process = h1_io_cb;
2957 h1c->wait_event.tasklet->context = h1c;
2958 h1c->conn->xprt->subscribe(h1c->conn, h1c->conn->xprt_ctx,
2959 SUB_RETRY_RECV, &h1c->wait_event);
2960
2961 return 0;
2962}
2963
2964
Christopher Faulet98fbe952019-07-22 16:18:24 +02002965static void h1_hdeaders_case_adjust_deinit()
2966{
2967 struct ebpt_node *node, *next;
2968 struct h1_hdr_entry *entry;
2969
2970 node = ebpt_first(&hdrs_map.map);
2971 while (node) {
2972 next = ebpt_next(node);
2973 ebpt_delete(node);
2974 entry = container_of(node, struct h1_hdr_entry, node);
2975 free(entry->node.key);
Tim Duesterhused526372020-03-05 17:56:33 +01002976 istfree(&entry->name);
Christopher Faulet98fbe952019-07-22 16:18:24 +02002977 free(entry);
2978 node = next;
2979 }
2980 free(hdrs_map.name);
Olivier Houcharda8f6b432018-12-21 15:20:29 +01002981}
2982
Christopher Faulet98fbe952019-07-22 16:18:24 +02002983static int cfg_h1_headers_case_adjust_postparser()
2984{
2985 FILE *file = NULL;
2986 char *c, *key_beg, *key_end, *value_beg, *value_end;
2987 char *err;
2988 int rc, line = 0, err_code = 0;
2989
2990 if (!hdrs_map.name)
2991 goto end;
2992
2993 file = fopen(hdrs_map.name, "r");
2994 if (!file) {
2995 ha_alert("config : h1-outgoing-headers-case-adjust-file '%s': failed to open file.\n",
2996 hdrs_map.name);
2997 err_code |= ERR_ALERT | ERR_FATAL;
2998 goto end;
2999 }
3000
3001 /* now parse all lines. The file may contain only two header name per
3002 * line, separated by spaces. All heading and trailing spaces will be
3003 * ignored. Lines starting with a # are ignored.
3004 */
3005 while (fgets(trash.area, trash.size, file) != NULL) {
3006 line++;
3007 c = trash.area;
3008
3009 /* strip leading spaces and tabs */
3010 while (*c == ' ' || *c == '\t')
3011 c++;
3012
3013 /* ignore emptu lines, or lines beginning with a dash */
3014 if (*c == '#' || *c == '\0' || *c == '\r' || *c == '\n')
3015 continue;
3016
3017 /* look for the end of the key */
3018 key_beg = c;
3019 while (*c != '\0' && *c != ' ' && *c != '\t' && *c != '\n' && *c != '\r')
3020 c++;
3021 key_end = c;
3022
3023 /* strip middle spaces and tabs */
3024 while (*c == ' ' || *c == '\t')
3025 c++;
3026
3027 /* look for the end of the value, it is the end of the line */
3028 value_beg = c;
3029 while (*c && *c != '\n' && *c != '\r')
3030 c++;
3031 value_end = c;
3032
3033 /* trim possibly trailing spaces and tabs */
3034 while (value_end > value_beg && (value_end[-1] == ' ' || value_end[-1] == '\t'))
3035 value_end--;
3036
3037 /* set final \0 and check entries */
3038 *key_end = '\0';
3039 *value_end = '\0';
3040
3041 err = NULL;
3042 rc = add_hdr_case_adjust(key_beg, value_beg, &err);
3043 if (rc < 0) {
Christopher Faulet98fbe952019-07-22 16:18:24 +02003044 ha_alert("config : h1-outgoing-headers-case-adjust-file '%s' : %s at line %d.\n",
3045 hdrs_map.name, err, line);
3046 err_code |= ERR_ALERT | ERR_FATAL;
Christopher Fauletcac5c092019-07-30 16:51:42 +02003047 free(err);
Christopher Faulet98fbe952019-07-22 16:18:24 +02003048 goto end;
3049 }
3050 if (rc > 0) {
Christopher Faulet98fbe952019-07-22 16:18:24 +02003051 ha_warning("config : h1-outgoing-headers-case-adjust-file '%s' : %s at line %d.\n",
3052 hdrs_map.name, err, line);
3053 err_code |= ERR_WARN;
Christopher Fauletcac5c092019-07-30 16:51:42 +02003054 free(err);
Christopher Faulet98fbe952019-07-22 16:18:24 +02003055 }
3056 }
3057
3058 end:
3059 if (file)
3060 fclose(file);
3061 hap_register_post_deinit(h1_hdeaders_case_adjust_deinit);
3062 return err_code;
3063}
3064
3065
3066/* config parser for global "h1-outgoing-header-case-adjust" */
3067static int cfg_parse_h1_header_case_adjust(char **args, int section_type, struct proxy *curpx,
3068 struct proxy *defpx, const char *file, int line,
3069 char **err)
3070{
3071 if (too_many_args(2, args, err, NULL))
3072 return -1;
3073 if (!*(args[1]) || !*(args[2])) {
3074 memprintf(err, "'%s' expects <from> and <to> as argument.", args[0]);
3075 return -1;
3076 }
3077 return add_hdr_case_adjust(args[1], args[2], err);
3078}
3079
3080/* config parser for global "h1-outgoing-headers-case-adjust-file" */
3081static int cfg_parse_h1_headers_case_adjust_file(char **args, int section_type, struct proxy *curpx,
3082 struct proxy *defpx, const char *file, int line,
3083 char **err)
3084{
3085 if (too_many_args(1, args, err, NULL))
3086 return -1;
3087 if (!*(args[1])) {
3088 memprintf(err, "'%s' expects <file> as argument.", args[0]);
3089 return -1;
3090 }
3091 free(hdrs_map.name);
3092 hdrs_map.name = strdup(args[1]);
3093 return 0;
3094}
3095
3096
3097/* config keyword parsers */
3098static struct cfg_kw_list cfg_kws = {{ }, {
3099 { CFG_GLOBAL, "h1-case-adjust", cfg_parse_h1_header_case_adjust },
3100 { CFG_GLOBAL, "h1-case-adjust-file", cfg_parse_h1_headers_case_adjust_file },
3101 { 0, NULL, NULL },
3102 }
3103};
3104
3105INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws);
3106REGISTER_CONFIG_POSTPARSER("h1-headers-map", cfg_h1_headers_case_adjust_postparser);
3107
3108
Christopher Faulet51dbc942018-09-13 09:05:15 +02003109/****************************************/
Ilya Shipitsinc02a23f2020-05-06 00:53:22 +05003110/* MUX initialization and instantiation */
Christopher Faulet51dbc942018-09-13 09:05:15 +02003111/****************************************/
3112
3113/* The mux operations */
Willy Tarreauf77a1582019-01-10 10:00:08 +01003114static const struct mux_ops mux_h1_ops = {
Christopher Faulet51dbc942018-09-13 09:05:15 +02003115 .init = h1_init,
3116 .wake = h1_wake,
3117 .attach = h1_attach,
3118 .get_first_cs = h1_get_first_cs,
Christopher Fauletfeb11742018-11-29 15:12:34 +01003119 .get_cs_info = h1_get_cs_info,
Christopher Faulet51dbc942018-09-13 09:05:15 +02003120 .detach = h1_detach,
3121 .destroy = h1_destroy,
3122 .avail_streams = h1_avail_streams,
Willy Tarreau00f18a32019-01-26 12:19:01 +01003123 .used_streams = h1_used_streams,
Christopher Faulet51dbc942018-09-13 09:05:15 +02003124 .rcv_buf = h1_rcv_buf,
3125 .snd_buf = h1_snd_buf,
Willy Tarreaue5733232019-05-22 19:24:06 +02003126#if defined(USE_LINUX_SPLICE)
Christopher Faulet1be55f92018-10-02 15:59:23 +02003127 .rcv_pipe = h1_rcv_pipe,
3128 .snd_pipe = h1_snd_pipe,
3129#endif
Christopher Faulet51dbc942018-09-13 09:05:15 +02003130 .subscribe = h1_subscribe,
3131 .unsubscribe = h1_unsubscribe,
3132 .shutr = h1_shutr,
3133 .shutw = h1_shutw,
Olivier Houcharda8f6b432018-12-21 15:20:29 +01003134 .show_fd = h1_show_fd,
Olivier Houchard9a86fcb2018-12-11 16:47:14 +01003135 .reset = h1_reset,
Olivier Houchard9b8e11e2019-10-25 16:19:26 +02003136 .ctl = h1_ctl,
Olivier Houchardf12ca9f2020-02-20 16:00:18 +01003137 .takeover = h1_takeover,
Christopher Faulet9f38f5a2019-04-03 09:53:32 +02003138 .flags = MX_FL_HTX,
Willy Tarreau0a7a4fb2019-05-22 11:36:54 +02003139 .name = "H1",
Christopher Faulet51dbc942018-09-13 09:05:15 +02003140};
3141
3142
3143/* this mux registers default HTX proto */
3144static struct mux_proto_list mux_proto_htx =
Christopher Fauletc985f6c2019-07-15 11:42:52 +02003145{ .token = IST(""), .mode = PROTO_MODE_HTTP, .side = PROTO_SIDE_BOTH, .mux = &mux_h1_ops };
Christopher Faulet51dbc942018-09-13 09:05:15 +02003146
Willy Tarreau0108d902018-11-25 19:14:37 +01003147INITCALL1(STG_REGISTER, register_mux_proto, &mux_proto_htx);
3148
Christopher Faulet51dbc942018-09-13 09:05:15 +02003149/*
3150 * Local variables:
3151 * c-indent-level: 8
3152 * c-basic-offset: 8
3153 * End:
3154 */