blob: 640a3dc8b4e1449637acbe07d1d4f09bf6789cf2 [file] [log] [blame]
Christopher Faulet47596d32018-10-22 09:17:28 +02001/*
2 * Functions to manipulate HTTP messages using the internal representation.
3 *
4 * Copyright (C) 2018 HAProxy Technologies, 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 */
Christopher Faulet5031ef52020-01-15 11:22:07 +010012#include <sys/types.h>
13#include <sys/stat.h>
14#include <fcntl.h>
15#include <unistd.h>
16
Willy Tarreau4c7e4b72020-05-27 12:58:42 +020017#include <haproxy/api.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020018#include <haproxy/arg.h>
Willy Tarreau6be78492020-06-05 00:00:29 +020019#include <haproxy/cfgparse.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020020#include <haproxy/global.h>
Willy Tarreau5413a872020-06-02 19:33:08 +020021#include <haproxy/h1.h>
Willy Tarreaucd72d8c2020-06-02 19:11:26 +020022#include <haproxy/http.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020023#include <haproxy/http_fetch.h>
Willy Tarreau87735332020-06-04 09:08:41 +020024#include <haproxy/http_htx.h>
Willy Tarreau16f958c2020-06-03 08:44:35 +020025#include <haproxy/htx.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020026#include <haproxy/log.h>
27#include <haproxy/regex.h>
28#include <haproxy/sample.h>
Christopher Faulet47596d32018-10-22 09:17:28 +020029
Christopher Faulet47596d32018-10-22 09:17:28 +020030
Christopher Fauletf7346382019-07-17 22:02:08 +020031struct buffer http_err_chunks[HTTP_ERR_SIZE];
Christopher Faulet1b13eca2020-05-14 09:54:26 +020032struct http_reply http_err_replies[HTTP_ERR_SIZE];
33
Christopher Faulet58857752020-01-15 15:19:50 +010034struct eb_root http_error_messages = EB_ROOT;
Christopher Faulet35cd81d2020-01-15 11:22:56 +010035struct list http_errors_list = LIST_HEAD_INIT(http_errors_list);
Christopher Faulet5809e102020-05-14 17:31:52 +020036struct list http_replies_list = LIST_HEAD_INIT(http_replies_list);
Christopher Fauleta7b677c2018-11-29 16:48:49 +010037
Christopher Faulet76edc0f2020-01-13 15:52:01 +010038/* The declaration of an errorfiles/errorfile directives. Used during config
39 * parsing only. */
40struct conf_errors {
41 char type; /* directive type (0: errorfiles, 1: errorfile) */
42 union {
43 struct {
44 int status; /* the status code associated to this error */
Christopher Faulet5809e102020-05-14 17:31:52 +020045 struct http_reply *reply; /* the http reply for the errorfile */
Christopher Faulet76edc0f2020-01-13 15:52:01 +010046 } errorfile; /* describe an "errorfile" directive */
47 struct {
48 char *name; /* the http-errors section name */
49 char status[HTTP_ERR_SIZE]; /* list of status to import (0: ignore, 1: implicit import, 2: explicit import) */
50 } errorfiles; /* describe an "errorfiles" directive */
51 } info;
52
53 char *file; /* file where the directive appears */
54 int line; /* line where the directive appears */
55
56 struct list list; /* next conf_errors */
57};
58
Christopher Faulet297fbb42019-05-13 14:41:27 +020059/* Returns the next unporocessed start line in the HTX message. It returns NULL
Christopher Faulet29f17582019-05-23 11:03:26 +020060 * if the start-line is undefined (first == -1). Otherwise, it returns the
Christopher Faulet297fbb42019-05-13 14:41:27 +020061 * pointer on the htx_sl structure.
Christopher Faulet47596d32018-10-22 09:17:28 +020062 */
Christopher Faulet297fbb42019-05-13 14:41:27 +020063struct htx_sl *http_get_stline(struct htx *htx)
Christopher Faulet47596d32018-10-22 09:17:28 +020064{
Christopher Faulet297fbb42019-05-13 14:41:27 +020065 struct htx_blk *blk;
Christopher Faulet573fe732018-11-28 16:55:12 +010066
Christopher Faulet29f17582019-05-23 11:03:26 +020067 BUG_ON(htx->first == -1);
68 blk = htx_get_first_blk(htx);
Christopher Faulet297fbb42019-05-13 14:41:27 +020069 if (!blk)
70 return NULL;
Christopher Faulet29f17582019-05-23 11:03:26 +020071 BUG_ON(htx_get_blk_type(blk) != HTX_BLK_REQ_SL && htx_get_blk_type(blk) != HTX_BLK_RES_SL);
Christopher Faulet297fbb42019-05-13 14:41:27 +020072 return htx_get_blk_ptr(htx, blk);
Christopher Faulet47596d32018-10-22 09:17:28 +020073}
74
Christopher Faulet727a3f12020-02-07 16:39:41 +010075/* Returns the headers size in the HTX message */
76size_t http_get_hdrs_size(struct htx *htx)
77{
78 struct htx_blk *blk;
79 size_t sz = 0;
80
81 blk = htx_get_first_blk(htx);
82 if (!blk || htx_get_blk_type(blk) > HTX_BLK_EOH)
83 return sz;
84
85 for (; blk; blk = htx_get_next_blk(htx, blk)) {
86 sz += htx_get_blksz(blk);
87 if (htx_get_blk_type(blk) == HTX_BLK_EOH)
88 break;
89 }
90 return sz;
91}
92
Christopher Faulet8dd33e12020-05-05 07:42:42 +020093/* Finds the first or next occurrence of header matching <pattern> in the HTX
94 * message <htx> using the context <ctx>. This structure holds everything
95 * necessary to use the header and find next occurrence. If its <blk> member is
96 * NULL, the header is searched from the beginning. Otherwise, the next
97 * occurrence is returned. The function returns 1 when it finds a value, and 0
98 * when there is no more. It is designed to work with headers defined as
99 * comma-separated lists. If HTTP_FIND_FL_FULL flag is set, it works on
100 * full-line headers in whose comma is not a delimiter but is part of the
101 * syntax. A special case, if ctx->value is NULL when searching for a new values
102 * of a header, the current header is rescanned. This allows rescanning after a
103 * header deletion.
104 *
105 * The matching method is chosen by checking the flags :
106 *
107 * * HTTP_FIND_FL_MATCH_REG : <pattern> is a regex. header names matching
108 * the regex are evaluated.
109 * * HTTP_FIND_FL_MATCH_STR : <pattern> is a string. The header names equal
110 * to the string are evaluated.
111 * * HTTP_FIND_FL_MATCH_PFX : <pattern> is a string. The header names
112 * starting by the string are evaluated.
113 * * HTTP_FIND_FL_MATCH_SFX : <pattern> is a string. The header names
114 * ending by the string are evaluated.
115 * * HTTP_FIND_FL_MATCH_SUB : <pattern> is a string. The header names
116 * containing the string are evaluated.
Christopher Faulet47596d32018-10-22 09:17:28 +0200117 */
Christopher Faulet8dd33e12020-05-05 07:42:42 +0200118
119#define HTTP_FIND_FL_MATCH_STR 0x0001
120#define HTTP_FIND_FL_MATCH_PFX 0x0002
121#define HTTP_FIND_FL_MATCH_SFX 0x0003
122#define HTTP_FIND_FL_MATCH_SUB 0x0004
123#define HTTP_FIND_FL_MATCH_REG 0x0005
124/* 0x0006..0x000f: for other matching methods */
125#define HTTP_FIND_FL_MATCH_TYPE 0x000F
126#define HTTP_FIND_FL_FULL 0x0010
127
128static int __http_find_header(const struct htx *htx, const void *pattern, struct http_hdr_ctx *ctx, int flags)
Christopher Faulet47596d32018-10-22 09:17:28 +0200129{
130 struct htx_blk *blk = ctx->blk;
131 struct ist n, v;
132 enum htx_blk_type type;
Christopher Faulet47596d32018-10-22 09:17:28 +0200133
134 if (blk) {
135 char *p;
136
Tim Duesterhused526372020-03-05 17:56:33 +0100137 if (!isttest(ctx->value))
Christopher Faulet47596d32018-10-22 09:17:28 +0200138 goto rescan_hdr;
Christopher Faulet8dd33e12020-05-05 07:42:42 +0200139 if (flags & HTTP_FIND_FL_FULL)
Christopher Faulet47596d32018-10-22 09:17:28 +0200140 goto next_blk;
141 v = htx_get_blk_value(htx, blk);
142 p = ctx->value.ptr + ctx->value.len + ctx->lws_after;
143 v.len -= (p - v.ptr);
144 v.ptr = p;
145 if (!v.len)
146 goto next_blk;
147 /* Skip comma */
148 if (*(v.ptr) == ',') {
149 v.ptr++;
150 v.len--;
151 }
152
153 goto return_hdr;
154 }
155
Christopher Faulet192c6a22019-06-11 16:32:24 +0200156 if (htx_is_empty(htx))
Christopher Faulet47596d32018-10-22 09:17:28 +0200157 return 0;
158
Christopher Fauleta3f15502019-05-13 15:27:23 +0200159 for (blk = htx_get_first_blk(htx); blk; blk = htx_get_next_blk(htx, blk)) {
Christopher Faulet47596d32018-10-22 09:17:28 +0200160 rescan_hdr:
Christopher Faulet47596d32018-10-22 09:17:28 +0200161 type = htx_get_blk_type(blk);
Christopher Faulet573fe732018-11-28 16:55:12 +0100162 if (type == HTX_BLK_EOH || type == HTX_BLK_EOM)
163 break;
Christopher Faulet47596d32018-10-22 09:17:28 +0200164 if (type != HTX_BLK_HDR)
Christopher Faulet28f29c72019-04-30 17:55:45 +0200165 continue;
Christopher Faulet8dd33e12020-05-05 07:42:42 +0200166
167 if ((flags & HTTP_FIND_FL_MATCH_TYPE) == HTTP_FIND_FL_MATCH_REG) {
168 const struct my_regex *re = pattern;
169
170 n = htx_get_blk_name(htx, blk);
171 if (!regex_exec2(re, n.ptr, n.len))
172 goto next_blk;
173 }
174 else {
175 const struct ist name = *(const struct ist *)(pattern);
176
Christopher Faulet47596d32018-10-22 09:17:28 +0200177 /* If no name was passed, we want any header. So skip the comparison */
Christopher Faulet8dd33e12020-05-05 07:42:42 +0200178 if (!istlen(name))
179 goto match;
180
Christopher Faulet47596d32018-10-22 09:17:28 +0200181 n = htx_get_blk_name(htx, blk);
Christopher Faulet8dd33e12020-05-05 07:42:42 +0200182 switch (flags & HTTP_FIND_FL_MATCH_TYPE) {
183 case HTTP_FIND_FL_MATCH_STR:
184 if (!isteqi(n, name))
185 goto next_blk;
186 break;
187 case HTTP_FIND_FL_MATCH_PFX:
188 if (istlen(n) < istlen(name))
189 goto next_blk;
190
191 n = ist2(istptr(n), istlen(name));
192 if (!isteqi(n, name))
193 goto next_blk;
194 break;
195 case HTTP_FIND_FL_MATCH_SFX:
196 if (istlen(n) < istlen(name))
197 goto next_blk;
198
199 n = ist2(istptr(n) + istlen(n) - istlen(name), istlen(name));
200 if (!isteqi(n, name))
201 goto next_blk;
202 break;
203 case HTTP_FIND_FL_MATCH_SUB:
Maciej Zdeb302b9f82020-11-20 12:12:24 +0000204 if (!strnistr(n.ptr, n.len, name.ptr, name.len))
Christopher Faulet8dd33e12020-05-05 07:42:42 +0200205 goto next_blk;
206 break;
207 default:
Christopher Faulet47596d32018-10-22 09:17:28 +0200208 goto next_blk;
Christopher Faulet8dd33e12020-05-05 07:42:42 +0200209 break;
210 }
Christopher Faulet47596d32018-10-22 09:17:28 +0200211 }
Christopher Faulet8dd33e12020-05-05 07:42:42 +0200212 match:
Christopher Faulet47596d32018-10-22 09:17:28 +0200213 v = htx_get_blk_value(htx, blk);
214
215 return_hdr:
216 ctx->lws_before = 0;
217 ctx->lws_after = 0;
218 while (v.len && HTTP_IS_LWS(*v.ptr)) {
219 v.ptr++;
220 v.len--;
221 ctx->lws_before++;
222 }
Christopher Faulet8dd33e12020-05-05 07:42:42 +0200223 if (!(flags & HTTP_FIND_FL_FULL))
Christopher Faulet47596d32018-10-22 09:17:28 +0200224 v.len = http_find_hdr_value_end(v.ptr, v.ptr + v.len) - v.ptr;
225 while (v.len && HTTP_IS_LWS(*(v.ptr + v.len - 1))) {
226 v.len--;
227 ctx->lws_after++;
228 }
Christopher Faulet47596d32018-10-22 09:17:28 +0200229 ctx->blk = blk;
230 ctx->value = v;
231 return 1;
232
233 next_blk:
Christopher Faulet28f29c72019-04-30 17:55:45 +0200234 ;
Christopher Faulet47596d32018-10-22 09:17:28 +0200235 }
236
237 ctx->blk = NULL;
238 ctx->value = ist("");
239 ctx->lws_before = ctx->lws_after = 0;
240 return 0;
241}
242
Christopher Faulet8dd33e12020-05-05 07:42:42 +0200243
244/* Header names must match <name> */
245int http_find_header(const struct htx *htx, const struct ist name, struct http_hdr_ctx *ctx, int full)
246{
247 return __http_find_header(htx, &name, ctx, HTTP_FIND_FL_MATCH_STR | (full ? HTTP_FIND_FL_FULL : 0));
248}
249
250/* Header names must match <name>. Same than http_find_header */
251int http_find_str_header(const struct htx *htx, const struct ist name, struct http_hdr_ctx *ctx, int full)
252{
253 return __http_find_header(htx, &name, ctx, HTTP_FIND_FL_MATCH_STR | (full ? HTTP_FIND_FL_FULL : 0));
254}
255
256
257/* Header names must start with <prefix> */
258int http_find_pfx_header(const struct htx *htx, const struct ist prefix, struct http_hdr_ctx *ctx, int full)
259{
260 return __http_find_header(htx, &prefix, ctx, HTTP_FIND_FL_MATCH_PFX | (full ? HTTP_FIND_FL_FULL : 0));
261}
262
263/* Header names must end with <suffix> */
264int http_find_sfx_header(const struct htx *htx, const struct ist suffix, struct http_hdr_ctx *ctx, int full)
265{
266 return __http_find_header(htx, &suffix, ctx, HTTP_FIND_FL_MATCH_SFX | (full ? HTTP_FIND_FL_FULL : 0));
267}
268/* Header names must contain <sub> */
269int http_find_sub_header(const struct htx *htx, const struct ist sub, struct http_hdr_ctx *ctx, int full)
270{
271 return __http_find_header(htx, &sub, ctx, HTTP_FIND_FL_MATCH_SUB | (full ? HTTP_FIND_FL_FULL : 0));
272}
273
274/* Header names must match <re> regex*/
275int http_match_header(const struct htx *htx, const struct my_regex *re, struct http_hdr_ctx *ctx, int full)
276{
277 return __http_find_header(htx, re, ctx, HTTP_FIND_FL_MATCH_REG | (full ? HTTP_FIND_FL_FULL : 0));
278}
279
280
Christopher Faulet47596d32018-10-22 09:17:28 +0200281/* Adds a header block int the HTX message <htx>, just before the EOH block. It
282 * returns 1 on success, otherwise it returns 0.
283 */
284int http_add_header(struct htx *htx, const struct ist n, const struct ist v)
285{
286 struct htx_blk *blk;
Christopher Fauletd7b7a1c2019-10-08 15:24:52 +0200287 struct htx_sl *sl;
Christopher Faulet47596d32018-10-22 09:17:28 +0200288 enum htx_blk_type type = htx_get_tail_type(htx);
289 int32_t prev;
290
291 blk = htx_add_header(htx, n, v);
292 if (!blk)
Christopher Fauletd7b7a1c2019-10-08 15:24:52 +0200293 goto fail;
Christopher Faulet47596d32018-10-22 09:17:28 +0200294
295 if (unlikely(type < HTX_BLK_EOH))
Christopher Fauletd7b7a1c2019-10-08 15:24:52 +0200296 goto end;
Christopher Faulet47596d32018-10-22 09:17:28 +0200297
298 /* <blk> is the head, swap it iteratively with its predecessor to place
299 * it just before the end-of-header block. So blocks remains ordered. */
Christopher Faulet29f17582019-05-23 11:03:26 +0200300 for (prev = htx_get_prev(htx, htx->tail); prev != htx->first; prev = htx_get_prev(htx, prev)) {
Christopher Faulet47596d32018-10-22 09:17:28 +0200301 struct htx_blk *pblk = htx_get_blk(htx, prev);
302 enum htx_blk_type type = htx_get_blk_type(pblk);
303
304 /* Swap .addr and .info fields */
305 blk->addr ^= pblk->addr; pblk->addr ^= blk->addr; blk->addr ^= pblk->addr;
306 blk->info ^= pblk->info; pblk->info ^= blk->info; blk->info ^= pblk->info;
307
308 if (blk->addr == pblk->addr)
309 blk->addr += htx_get_blksz(pblk);
Christopher Faulet47596d32018-10-22 09:17:28 +0200310
311 /* Stop when end-of-header is reached */
312 if (type == HTX_BLK_EOH)
313 break;
314
315 blk = pblk;
316 }
Christopher Faulet05aab642019-04-11 13:43:57 +0200317
Christopher Fauletd7b7a1c2019-10-08 15:24:52 +0200318 end:
319 sl = http_get_stline(htx);
Christopher Faulet3e1f7f42020-02-28 09:47:07 +0100320 if (sl && (sl->flags & HTX_SL_F_HAS_AUTHORITY) && isteqi(n, ist("host"))) {
Christopher Fauletd7b7a1c2019-10-08 15:24:52 +0200321 if (!http_update_authority(htx, sl, v))
322 goto fail;
323 }
Christopher Faulet47596d32018-10-22 09:17:28 +0200324 return 1;
Christopher Fauletd7b7a1c2019-10-08 15:24:52 +0200325
326 fail:
327 return 0;
Christopher Faulet47596d32018-10-22 09:17:28 +0200328}
329
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100330/* Replaces parts of the start-line of the HTX message <htx>. It returns 1 on
Christopher Faulet29f17582019-05-23 11:03:26 +0200331 * success, otherwise it returns 0.
Christopher Faulet47596d32018-10-22 09:17:28 +0200332 */
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100333int http_replace_stline(struct htx *htx, const struct ist p1, const struct ist p2, const struct ist p3)
Christopher Faulet47596d32018-10-22 09:17:28 +0200334{
Christopher Faulet7b7d5072019-05-13 15:22:59 +0200335 struct htx_blk *blk;
Christopher Faulet47596d32018-10-22 09:17:28 +0200336
Christopher Faulet29f17582019-05-23 11:03:26 +0200337 blk = htx_get_first_blk(htx);
338 if (!blk || !htx_replace_stline(htx, blk, p1, p2, p3))
Christopher Faulet7b7d5072019-05-13 15:22:59 +0200339 return 0;
340 return 1;
Christopher Faulet47596d32018-10-22 09:17:28 +0200341}
342
Christopher Faulete010c802018-10-24 10:36:45 +0200343/* Replace the request method in the HTX message <htx> by <meth>. It returns 1
344 * on success, otherwise 0.
345 */
346int http_replace_req_meth(struct htx *htx, const struct ist meth)
347{
348 struct buffer *temp = get_trash_chunk();
Christopher Faulet297fbb42019-05-13 14:41:27 +0200349 struct htx_sl *sl = http_get_stline(htx);
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100350 struct ist uri, vsn;
Christopher Faulete010c802018-10-24 10:36:45 +0200351
Willy Tarreaucdce54c2019-02-12 12:02:27 +0100352 if (!sl)
353 return 0;
354
Christopher Faulete010c802018-10-24 10:36:45 +0200355 /* Start by copying old uri and version */
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100356 chunk_memcat(temp, HTX_SL_REQ_UPTR(sl), HTX_SL_REQ_ULEN(sl)); /* uri */
357 uri = ist2(temp->area, HTX_SL_REQ_ULEN(sl));
Christopher Faulete010c802018-10-24 10:36:45 +0200358
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100359 chunk_memcat(temp, HTX_SL_REQ_VPTR(sl), HTX_SL_REQ_VLEN(sl)); /* vsn */
360 vsn = ist2(temp->area + uri.len, HTX_SL_REQ_VLEN(sl));
Christopher Faulete010c802018-10-24 10:36:45 +0200361
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100362 /* create the new start line */
363 sl->info.req.meth = find_http_meth(meth.ptr, meth.len);
364 return http_replace_stline(htx, meth, uri, vsn);
Christopher Faulete010c802018-10-24 10:36:45 +0200365}
366
367/* Replace the request uri in the HTX message <htx> by <uri>. It returns 1 on
368 * success, otherwise 0.
369 */
370int http_replace_req_uri(struct htx *htx, const struct ist uri)
371{
372 struct buffer *temp = get_trash_chunk();
Christopher Faulet297fbb42019-05-13 14:41:27 +0200373 struct htx_sl *sl = http_get_stline(htx);
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100374 struct ist meth, vsn;
Christopher Faulete010c802018-10-24 10:36:45 +0200375
Willy Tarreaucdce54c2019-02-12 12:02:27 +0100376 if (!sl)
Christopher Fauletd7b7a1c2019-10-08 15:24:52 +0200377 goto fail;
Willy Tarreaucdce54c2019-02-12 12:02:27 +0100378
Christopher Faulete010c802018-10-24 10:36:45 +0200379 /* Start by copying old method and version */
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100380 chunk_memcat(temp, HTX_SL_REQ_MPTR(sl), HTX_SL_REQ_MLEN(sl)); /* meth */
381 meth = ist2(temp->area, HTX_SL_REQ_MLEN(sl));
Christopher Faulete010c802018-10-24 10:36:45 +0200382
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100383 chunk_memcat(temp, HTX_SL_REQ_VPTR(sl), HTX_SL_REQ_VLEN(sl)); /* vsn */
384 vsn = ist2(temp->area + meth.len, HTX_SL_REQ_VLEN(sl));
Christopher Faulete010c802018-10-24 10:36:45 +0200385
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100386 /* create the new start line */
Christopher Fauletd7b7a1c2019-10-08 15:24:52 +0200387 if (!http_replace_stline(htx, meth, uri, vsn))
388 goto fail;
389
390 sl = http_get_stline(htx);
391 if (!http_update_host(htx, sl, uri))
392 goto fail;
393
394 return 1;
395 fail:
396 return 0;
Christopher Faulete010c802018-10-24 10:36:45 +0200397}
398
Christopher Fauletb8ce5052020-08-31 16:11:57 +0200399/* Replace the request path in the HTX message <htx> by <path>. The host part is
400 * preserverd. if <with_qs> is set, the query string is evaluated as part of the
401 * path and replaced. Otherwise, it is preserved too. It returns 1 on success,
402 * otherwise 0.
Christopher Faulete010c802018-10-24 10:36:45 +0200403 */
Christopher Fauletb8ce5052020-08-31 16:11:57 +0200404int http_replace_req_path(struct htx *htx, const struct ist path, int with_qs)
Christopher Faulete010c802018-10-24 10:36:45 +0200405{
406 struct buffer *temp = get_trash_chunk();
Christopher Faulet297fbb42019-05-13 14:41:27 +0200407 struct htx_sl *sl = http_get_stline(htx);
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100408 struct ist meth, uri, vsn, p;
Christopher Faulete010c802018-10-24 10:36:45 +0200409 size_t plen = 0;
410
Willy Tarreaucdce54c2019-02-12 12:02:27 +0100411 if (!sl)
412 return 0;
413
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100414 uri = htx_sl_req_uri(sl);
415 p = http_get_path(uri);
Tim Duesterhused526372020-03-05 17:56:33 +0100416 if (!isttest(p))
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100417 p = uri;
Christopher Fauletb8ce5052020-08-31 16:11:57 +0200418 if (with_qs)
419 plen = p.len;
420 else {
421 while (plen < p.len && *(p.ptr + plen) != '?')
422 plen++;
423 }
Christopher Faulete010c802018-10-24 10:36:45 +0200424
425 /* Start by copying old method and version and create the new uri */
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100426 chunk_memcat(temp, HTX_SL_REQ_MPTR(sl), HTX_SL_REQ_MLEN(sl)); /* meth */
427 meth = ist2(temp->area, HTX_SL_REQ_MLEN(sl));
Christopher Faulete010c802018-10-24 10:36:45 +0200428
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100429 chunk_memcat(temp, HTX_SL_REQ_VPTR(sl), HTX_SL_REQ_VLEN(sl)); /* vsn */
430 vsn = ist2(temp->area + meth.len, HTX_SL_REQ_VLEN(sl));
431
432 chunk_memcat(temp, uri.ptr, p.ptr - uri.ptr); /* uri: host part */
Christopher Faulete010c802018-10-24 10:36:45 +0200433 chunk_memcat(temp, path.ptr, path.len); /* uri: new path */
434 chunk_memcat(temp, p.ptr + plen, p.len - plen); /* uri: QS part */
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100435 uri = ist2(temp->area + meth.len + vsn.len, uri.len - plen + path.len);
Christopher Faulete010c802018-10-24 10:36:45 +0200436
437 /* create the new start line */
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100438 return http_replace_stline(htx, meth, uri, vsn);
Christopher Faulete010c802018-10-24 10:36:45 +0200439}
440
441/* Replace the request query-string in the HTX message <htx> by <query>. The
442 * host part and the path are preserved. It returns 1 on success, otherwise
443 * 0.
444 */
445int http_replace_req_query(struct htx *htx, const struct ist query)
446{
447 struct buffer *temp = get_trash_chunk();
Christopher Faulet297fbb42019-05-13 14:41:27 +0200448 struct htx_sl *sl = http_get_stline(htx);
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100449 struct ist meth, uri, vsn, q;
Christopher Faulete010c802018-10-24 10:36:45 +0200450 int offset = 1;
451
Willy Tarreaucdce54c2019-02-12 12:02:27 +0100452 if (!sl)
453 return 0;
454
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100455 uri = htx_sl_req_uri(sl);
456 q = uri;
Christopher Faulete010c802018-10-24 10:36:45 +0200457 while (q.len > 0 && *(q.ptr) != '?') {
458 q.ptr++;
459 q.len--;
460 }
461
462 /* skip the question mark or indicate that we must insert it
463 * (but only if the format string is not empty then).
464 */
465 if (q.len) {
466 q.ptr++;
467 q.len--;
468 }
469 else if (query.len > 1)
470 offset = 0;
471
472 /* Start by copying old method and version and create the new uri */
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100473 chunk_memcat(temp, HTX_SL_REQ_MPTR(sl), HTX_SL_REQ_MLEN(sl)); /* meth */
474 meth = ist2(temp->area, HTX_SL_REQ_MLEN(sl));
Christopher Faulete010c802018-10-24 10:36:45 +0200475
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100476 chunk_memcat(temp, HTX_SL_REQ_VPTR(sl), HTX_SL_REQ_VLEN(sl)); /* vsn */
477 vsn = ist2(temp->area + meth.len, HTX_SL_REQ_VLEN(sl));
Christopher Faulete010c802018-10-24 10:36:45 +0200478
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100479 chunk_memcat(temp, uri.ptr, q.ptr - uri.ptr); /* uri: host + path part */
480 chunk_memcat(temp, query.ptr + offset, query.len - offset); /* uri: new QS */
481 uri = ist2(temp->area + meth.len + vsn.len, uri.len - q.len + query.len - offset);
Christopher Faulete010c802018-10-24 10:36:45 +0200482
483 /* create the new start line */
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100484 return http_replace_stline(htx, meth, uri, vsn);
Christopher Faulete010c802018-10-24 10:36:45 +0200485}
486
487/* Replace the response status in the HTX message <htx> by <status>. It returns
488 * 1 on success, otherwise 0.
489*/
Christopher Fauletbde2c4c2020-08-31 16:43:34 +0200490int http_replace_res_status(struct htx *htx, const struct ist status, const struct ist reason)
Christopher Faulete010c802018-10-24 10:36:45 +0200491{
492 struct buffer *temp = get_trash_chunk();
Christopher Faulet297fbb42019-05-13 14:41:27 +0200493 struct htx_sl *sl = http_get_stline(htx);
Christopher Fauletbde2c4c2020-08-31 16:43:34 +0200494 struct ist vsn, r;
Christopher Faulete010c802018-10-24 10:36:45 +0200495
Willy Tarreaucdce54c2019-02-12 12:02:27 +0100496 if (!sl)
497 return 0;
498
Christopher Faulete010c802018-10-24 10:36:45 +0200499 /* Start by copying old uri and version */
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100500 chunk_memcat(temp, HTX_SL_RES_VPTR(sl), HTX_SL_RES_VLEN(sl)); /* vsn */
501 vsn = ist2(temp->area, HTX_SL_RES_VLEN(sl));
Christopher Fauletbde2c4c2020-08-31 16:43:34 +0200502 r = reason;
503 if (!isttest(r)) {
504 chunk_memcat(temp, HTX_SL_RES_RPTR(sl), HTX_SL_RES_RLEN(sl)); /* reason */
505 r = ist2(temp->area + vsn.len, HTX_SL_RES_RLEN(sl));
506 }
Christopher Faulete010c802018-10-24 10:36:45 +0200507
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100508 /* create the new start line */
509 sl->info.res.status = strl2ui(status.ptr, status.len);
Christopher Fauletbde2c4c2020-08-31 16:43:34 +0200510 return http_replace_stline(htx, vsn, status, r);
Christopher Faulete010c802018-10-24 10:36:45 +0200511}
512
513/* Replace the response reason in the HTX message <htx> by <reason>. It returns
514 * 1 on success, otherwise 0.
515*/
516int http_replace_res_reason(struct htx *htx, const struct ist reason)
517{
518 struct buffer *temp = get_trash_chunk();
Christopher Faulet297fbb42019-05-13 14:41:27 +0200519 struct htx_sl *sl = http_get_stline(htx);
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100520 struct ist vsn, status;
Christopher Faulete010c802018-10-24 10:36:45 +0200521
Willy Tarreaucdce54c2019-02-12 12:02:27 +0100522 if (!sl)
523 return 0;
524
Christopher Faulete010c802018-10-24 10:36:45 +0200525 /* Start by copying old uri and version */
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100526 chunk_memcat(temp, HTX_SL_RES_VPTR(sl), HTX_SL_RES_VLEN(sl)); /* vsn */
527 vsn = ist2(temp->area, HTX_SL_RES_VLEN(sl));
Christopher Faulete010c802018-10-24 10:36:45 +0200528
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100529 chunk_memcat(temp, HTX_SL_RES_CPTR(sl), HTX_SL_RES_CLEN(sl)); /* code */
530 status = ist2(temp->area + vsn.len, HTX_SL_RES_CLEN(sl));
Christopher Faulete010c802018-10-24 10:36:45 +0200531
Christopher Fauletf1ba18d2018-11-26 21:37:08 +0100532 /* create the new start line */
533 return http_replace_stline(htx, vsn, status, reason);
Christopher Faulete010c802018-10-24 10:36:45 +0200534}
535
Christopher Faulet47596d32018-10-22 09:17:28 +0200536/* Replaces a part of a header value referenced in the context <ctx> by
537 * <data>. It returns 1 on success, otherwise it returns 0. The context is
538 * updated if necessary.
539 */
540int http_replace_header_value(struct htx *htx, struct http_hdr_ctx *ctx, const struct ist data)
541{
542 struct htx_blk *blk = ctx->blk;
Christopher Fauletd7b7a1c2019-10-08 15:24:52 +0200543 struct htx_sl *sl;
Christopher Faulet47596d32018-10-22 09:17:28 +0200544 char *start;
545 struct ist v;
546 uint32_t len, off;
547
548 if (!blk)
Christopher Fauletd7b7a1c2019-10-08 15:24:52 +0200549 goto fail;
Christopher Faulet47596d32018-10-22 09:17:28 +0200550
551 v = htx_get_blk_value(htx, blk);
552 start = ctx->value.ptr - ctx->lws_before;
553 len = ctx->lws_before + ctx->value.len + ctx->lws_after;
554 off = start - v.ptr;
555
556 blk = htx_replace_blk_value(htx, blk, ist2(start, len), data);
557 if (!blk)
Christopher Fauletd7b7a1c2019-10-08 15:24:52 +0200558 goto fail;
Christopher Faulet47596d32018-10-22 09:17:28 +0200559
560 v = htx_get_blk_value(htx, blk);
Christopher Fauletd7b7a1c2019-10-08 15:24:52 +0200561
562 sl = http_get_stline(htx);
563 if (sl && (sl->flags & HTX_SL_F_HAS_AUTHORITY)) {
564 struct ist n = htx_get_blk_name(htx, blk);
565
566 if (isteq(n, ist("host"))) {
567 if (!http_update_authority(htx, sl, v))
568 goto fail;
569 ctx->blk = NULL;
570 http_find_header(htx, ist("host"), ctx, 1);
571 blk = ctx->blk;
572 v = htx_get_blk_value(htx, blk);
573 }
574 }
575
Christopher Faulet47596d32018-10-22 09:17:28 +0200576 ctx->blk = blk;
577 ctx->value.ptr = v.ptr + off;
578 ctx->value.len = data.len;
579 ctx->lws_before = ctx->lws_after = 0;
580
581 return 1;
Christopher Fauletd7b7a1c2019-10-08 15:24:52 +0200582 fail:
583 return 0;
Christopher Faulet47596d32018-10-22 09:17:28 +0200584}
585
586/* Fully replaces a header referenced in the context <ctx> by the name <name>
587 * with the value <value>. It returns 1 on success, otherwise it returns 0. The
588 * context is updated if necessary.
589 */
590int http_replace_header(struct htx *htx, struct http_hdr_ctx *ctx,
591 const struct ist name, const struct ist value)
592{
593 struct htx_blk *blk = ctx->blk;
Christopher Fauletd7b7a1c2019-10-08 15:24:52 +0200594 struct htx_sl *sl;
Christopher Faulet47596d32018-10-22 09:17:28 +0200595
596 if (!blk)
Christopher Fauletd7b7a1c2019-10-08 15:24:52 +0200597 goto fail;
Christopher Faulet47596d32018-10-22 09:17:28 +0200598
599 blk = htx_replace_header(htx, blk, name, value);
600 if (!blk)
Christopher Fauletd7b7a1c2019-10-08 15:24:52 +0200601 goto fail;
602
603 sl = http_get_stline(htx);
Christopher Faulet3e1f7f42020-02-28 09:47:07 +0100604 if (sl && (sl->flags & HTX_SL_F_HAS_AUTHORITY) && isteqi(name, ist("host"))) {
Christopher Fauletd7b7a1c2019-10-08 15:24:52 +0200605 if (!http_update_authority(htx, sl, value))
606 goto fail;
607 ctx->blk = NULL;
608 http_find_header(htx, ist("host"), ctx, 1);
609 blk = ctx->blk;
610 }
Christopher Faulet47596d32018-10-22 09:17:28 +0200611
612 ctx->blk = blk;
613 ctx->value = ist(NULL);
614 ctx->lws_before = ctx->lws_after = 0;
615
616 return 1;
Christopher Fauletd7b7a1c2019-10-08 15:24:52 +0200617 fail:
618 return 0;
Christopher Faulet47596d32018-10-22 09:17:28 +0200619}
620
621/* Remove one value of a header. This only works on a <ctx> returned by
622 * http_find_header function. The value is removed, as well as surrounding commas
623 * if any. If the removed value was alone, the whole header is removed. The
624 * <ctx> is always updated accordingly, as well as the HTX message <htx>. It
625 * returns 1 on success. Otherwise, it returns 0. The <ctx> is always left in a
626 * form that can be handled by http_find_header() to find next occurrence.
627 */
628int http_remove_header(struct htx *htx, struct http_hdr_ctx *ctx)
629{
630 struct htx_blk *blk = ctx->blk;
631 char *start;
632 struct ist v;
633 uint32_t len;
634
635 if (!blk)
636 return 0;
637
638 start = ctx->value.ptr - ctx->lws_before;
639 len = ctx->lws_before + ctx->value.len + ctx->lws_after;
640
641 v = htx_get_blk_value(htx, blk);
642 if (len == v.len) {
643 blk = htx_remove_blk(htx, blk);
Christopher Faulet192c6a22019-06-11 16:32:24 +0200644 if (blk || htx_is_empty(htx)) {
Christopher Faulet47596d32018-10-22 09:17:28 +0200645 ctx->blk = blk;
Tim Duesterhus241e29e2020-03-05 17:56:30 +0100646 ctx->value = IST_NULL;
Christopher Faulet47596d32018-10-22 09:17:28 +0200647 ctx->lws_before = ctx->lws_after = 0;
648 }
649 else {
650 ctx->blk = htx_get_blk(htx, htx->tail);
651 ctx->value = htx_get_blk_value(htx, ctx->blk);
652 ctx->lws_before = ctx->lws_after = 0;
653 }
654 return 1;
655 }
656
657 /* This was not the only value of this header. We have to remove the
658 * part pointed by ctx->value. If it is the last entry of the list, we
659 * remove the last separator.
660 */
661 if (start == v.ptr) {
662 /* It's the first header part but not the only one. So remove
663 * the comma after it. */
664 len++;
665 }
666 else {
667 /* There is at least one header part before the removed one. So
668 * remove the comma between them. */
669 start--;
670 len++;
671 }
672 /* Update the block content and its len */
673 memmove(start, start+len, v.len-len);
Christopher Faulet3e2638e2019-06-18 09:49:16 +0200674 htx_change_blk_value_len(htx, blk, v.len-len);
Christopher Faulet47596d32018-10-22 09:17:28 +0200675
676 /* Finally update the ctx */
677 ctx->value.ptr = start;
678 ctx->value.len = 0;
679 ctx->lws_before = ctx->lws_after = 0;
680
681 return 1;
682}
Christopher Faulet7ff1cea2018-10-24 10:39:35 +0200683
Christopher Fauletd7b7a1c2019-10-08 15:24:52 +0200684/* Updates the authority part of the uri with the value <host>. It happens when
685 * the header host is modified. It returns 0 on failure and 1 on success. It is
686 * the caller responsibility to provide the start-line and to be sure the uri
687 * contains an authority. Thus, if no authority is found in the uri, an error is
688 * returned.
689 */
Christopher Faulet1543d442020-04-28 19:57:29 +0200690int http_update_authority(struct htx *htx, struct htx_sl *sl, const struct ist host)
Christopher Fauletd7b7a1c2019-10-08 15:24:52 +0200691{
692 struct buffer *temp = get_trash_chunk();
693 struct ist meth, vsn, uri, authority;
694
695 uri = htx_sl_req_uri(sl);
696 authority = http_get_authority(uri, 1);
Christopher Faulet34b18e42020-02-18 11:02:21 +0100697 if (!authority.len)
Christopher Fauletd7b7a1c2019-10-08 15:24:52 +0200698 return 0;
699
Christopher Faulet34b18e42020-02-18 11:02:21 +0100700 /* Don't update the uri if there is no change */
701 if (isteq(host, authority))
702 return 1;
703
Christopher Fauletd7b7a1c2019-10-08 15:24:52 +0200704 /* Start by copying old method and version */
705 chunk_memcat(temp, HTX_SL_REQ_MPTR(sl), HTX_SL_REQ_MLEN(sl)); /* meth */
706 meth = ist2(temp->area, HTX_SL_REQ_MLEN(sl));
707
708 chunk_memcat(temp, HTX_SL_REQ_VPTR(sl), HTX_SL_REQ_VLEN(sl)); /* vsn */
709 vsn = ist2(temp->area + meth.len, HTX_SL_REQ_VLEN(sl));
710
711 chunk_memcat(temp, uri.ptr, authority.ptr - uri.ptr);
712 chunk_memcat(temp, host.ptr, host.len);
713 chunk_memcat(temp, authority.ptr + authority.len, uri.ptr + uri.len - (authority.ptr + authority.len));
714 uri = ist2(temp->area + meth.len + vsn.len, host.len + uri.len - authority.len); /* uri */
715
716 return http_replace_stline(htx, meth, uri, vsn);
717
718}
719
720/* Update the header host by extracting the authority of the uri <uri>. flags of
721 * the start-line are also updated accordingly. For orgin-form and asterisk-form
722 * uri, the header host is not changed and the flag HTX_SL_F_HAS_AUTHORITY is
723 * removed from the flags of the start-line. Otherwise, this flag is set and the
724 * authority is used to set the value of the header host. This function returns
725 * 0 on failure and 1 on success.
726*/
Christopher Faulet1543d442020-04-28 19:57:29 +0200727int http_update_host(struct htx *htx, struct htx_sl *sl, const struct ist uri)
Christopher Fauletd7b7a1c2019-10-08 15:24:52 +0200728{
729 struct ist authority;
730 struct http_hdr_ctx ctx;
731
732 if (!uri.len || uri.ptr[0] == '/' || uri.ptr[0] == '*') {
733 // origin-form or a asterisk-form (RFC7320 #5.3.1 and #5.3.4)
734 sl->flags &= ~HTX_SL_F_HAS_AUTHORITY;
735 }
736 else {
737 sl->flags |= HTX_SL_F_HAS_AUTHORITY;
738 if (sl->info.req.meth != HTTP_METH_CONNECT) {
739 // absolute-form (RFC7320 #5.3.2)
740 sl->flags |= HTX_SL_F_HAS_SCHM;
741 if (uri.len > 4 && (uri.ptr[0] | 0x20) == 'h')
742 sl->flags |= ((uri.ptr[4] == ':') ? HTX_SL_F_SCHM_HTTP : HTX_SL_F_SCHM_HTTPS);
743
744 authority = http_get_authority(uri, 1);
745 if (!authority.len)
746 goto fail;
747 }
748 else {
749 // authority-form (RFC7320 #5.3.3)
750 authority = uri;
751 }
752
753 /* Replace header host value */
754 ctx.blk = NULL;
755 while (http_find_header(htx, ist("host"), &ctx, 1)) {
756 if (!http_replace_header_value(htx, &ctx, authority))
757 goto fail;
758 }
759
760 }
761 return 1;
762 fail:
763 return 0;
764}
Christopher Faulet7ff1cea2018-10-24 10:39:35 +0200765
766/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
767 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
768 * performed over the whole headers. Otherwise it must contain a valid header
769 * context, initialised with ctx->blk=NULL for the first lookup in a series. If
770 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
771 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
772 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
773 * -1. The value fetch stops at commas, so this function is suited for use with
774 * list headers.
775 * The return value is 0 if nothing was found, or non-zero otherwise.
776 */
777unsigned int http_get_htx_hdr(const struct htx *htx, const struct ist hdr,
778 int occ, struct http_hdr_ctx *ctx, char **vptr, size_t *vlen)
779{
780 struct http_hdr_ctx local_ctx;
781 struct ist val_hist[MAX_HDR_HISTORY];
782 unsigned int hist_idx;
783 int found;
784
785 if (!ctx) {
786 local_ctx.blk = NULL;
787 ctx = &local_ctx;
788 }
789
790 if (occ >= 0) {
791 /* search from the beginning */
792 while (http_find_header(htx, hdr, ctx, 0)) {
793 occ--;
794 if (occ <= 0) {
795 *vptr = ctx->value.ptr;
796 *vlen = ctx->value.len;
797 return 1;
798 }
799 }
800 return 0;
801 }
802
803 /* negative occurrence, we scan all the list then walk back */
804 if (-occ > MAX_HDR_HISTORY)
805 return 0;
806
807 found = hist_idx = 0;
808 while (http_find_header(htx, hdr, ctx, 0)) {
809 val_hist[hist_idx] = ctx->value;
810 if (++hist_idx >= MAX_HDR_HISTORY)
811 hist_idx = 0;
812 found++;
813 }
814 if (-occ > found)
815 return 0;
816
817 /* OK now we have the last occurrence in [hist_idx-1], and we need to
818 * find occurrence -occ. 0 <= hist_idx < MAX_HDR_HISTORY, and we have
819 * -10 <= occ <= -1. So we have to check [hist_idx%MAX_HDR_HISTORY+occ]
820 * to remain in the 0..9 range.
821 */
822 hist_idx += occ + MAX_HDR_HISTORY;
823 if (hist_idx >= MAX_HDR_HISTORY)
824 hist_idx -= MAX_HDR_HISTORY;
825 *vptr = val_hist[hist_idx].ptr;
826 *vlen = val_hist[hist_idx].len;
827 return 1;
828}
829
830/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
831 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
832 * performed over the whole headers. Otherwise it must contain a valid header
833 * context, initialised with ctx->blk=NULL for the first lookup in a series. If
834 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
835 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
836 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
837 * -1. This function differs from http_get_hdr() in that it only returns full
838 * line header values and does not stop at commas.
839 * The return value is 0 if nothing was found, or non-zero otherwise.
840 */
841unsigned int http_get_htx_fhdr(const struct htx *htx, const struct ist hdr,
842 int occ, struct http_hdr_ctx *ctx, char **vptr, size_t *vlen)
843{
844 struct http_hdr_ctx local_ctx;
845 struct ist val_hist[MAX_HDR_HISTORY];
846 unsigned int hist_idx;
847 int found;
848
849 if (!ctx) {
850 local_ctx.blk = NULL;
851 ctx = &local_ctx;
852 }
853
854 if (occ >= 0) {
855 /* search from the beginning */
856 while (http_find_header(htx, hdr, ctx, 1)) {
857 occ--;
858 if (occ <= 0) {
859 *vptr = ctx->value.ptr;
860 *vlen = ctx->value.len;
861 return 1;
862 }
863 }
864 return 0;
865 }
866
867 /* negative occurrence, we scan all the list then walk back */
868 if (-occ > MAX_HDR_HISTORY)
869 return 0;
870
871 found = hist_idx = 0;
872 while (http_find_header(htx, hdr, ctx, 1)) {
873 val_hist[hist_idx] = ctx->value;
874 if (++hist_idx >= MAX_HDR_HISTORY)
875 hist_idx = 0;
876 found++;
877 }
878 if (-occ > found)
879 return 0;
880
881 /* OK now we have the last occurrence in [hist_idx-1], and we need to
882 * find occurrence -occ. 0 <= hist_idx < MAX_HDR_HISTORY, and we have
883 * -10 <= occ <= -1. So we have to check [hist_idx%MAX_HDR_HISTORY+occ]
884 * to remain in the 0..9 range.
885 */
886 hist_idx += occ + MAX_HDR_HISTORY;
887 if (hist_idx >= MAX_HDR_HISTORY)
888 hist_idx -= MAX_HDR_HISTORY;
889 *vptr = val_hist[hist_idx].ptr;
890 *vlen = val_hist[hist_idx].len;
891 return 1;
892}
Christopher Fauleta7b677c2018-11-29 16:48:49 +0100893
Christopher Fauleta66adf42020-11-05 22:43:41 +0100894int http_str_to_htx(struct buffer *buf, struct ist raw, char **errmsg)
Christopher Fauleta7b677c2018-11-29 16:48:49 +0100895{
896 struct htx *htx;
897 struct htx_sl *sl;
898 struct h1m h1m;
Christopher Faulete4ab11b2019-06-11 15:05:37 +0200899 struct http_hdr hdrs[global.tune.max_http_hdr];
Christopher Fauleta7b677c2018-11-29 16:48:49 +0100900 union h1_sl h1sl;
901 unsigned int flags = HTX_SL_F_IS_RESP;
902 int ret = 0;
903
Christopher Faulet90cc4812019-07-22 16:49:30 +0200904 b_reset(buf);
905 if (!raw.len) {
906 buf->size = 0;
907 buf->area = malloc(raw.len);
908 return 1;
909 }
910
Christopher Fauleta7b677c2018-11-29 16:48:49 +0100911 buf->size = global.tune.bufsize;
912 buf->area = (char *)malloc(buf->size);
913 if (!buf->area)
914 goto error;
Christopher Fauleta7b677c2018-11-29 16:48:49 +0100915
916 h1m_init_res(&h1m);
917 h1m.flags |= H1_MF_NO_PHDR;
918 ret = h1_headers_to_hdr_list(raw.ptr, raw.ptr + raw.len,
919 hdrs, sizeof(hdrs)/sizeof(hdrs[0]), &h1m, &h1sl);
Christopher Fauleta66adf42020-11-05 22:43:41 +0100920 if (ret <= 0) {
921 memprintf(errmsg, "unabled to parse headers (error offset: %d)", h1m.err_pos);
Christopher Fauleta7b677c2018-11-29 16:48:49 +0100922 goto error;
Christopher Fauleta66adf42020-11-05 22:43:41 +0100923 }
Christopher Fauleta7b677c2018-11-29 16:48:49 +0100924
Christopher Fauleta66adf42020-11-05 22:43:41 +0100925 if (unlikely(h1sl.st.v.len != 8)) {
926 memprintf(errmsg, "invalid http version (%.*s)", (int)h1sl.st.v.len, h1sl.st.v.ptr);
Christopher Fauleta7b677c2018-11-29 16:48:49 +0100927 goto error;
Christopher Fauleta66adf42020-11-05 22:43:41 +0100928 }
Christopher Fauleta7b677c2018-11-29 16:48:49 +0100929 if ((*(h1sl.st.v.ptr + 5) > '1') ||
930 ((*(h1sl.st.v.ptr + 5) == '1') && (*(h1sl.st.v.ptr + 7) >= '1')))
931 h1m.flags |= H1_MF_VER_11;
932
Christopher Fauleta66adf42020-11-05 22:43:41 +0100933 if (h1sl.st.status < 200 && (h1sl.st.status == 100 || h1sl.st.status >= 102)) {
934 memprintf(errmsg, "invalid http status code for an error message (%u)",
935 h1sl.st.status);
Christopher Faulet1d5ec092019-06-26 14:23:54 +0200936 goto error;
Christopher Fauleta66adf42020-11-05 22:43:41 +0100937 }
Christopher Faulet1d5ec092019-06-26 14:23:54 +0200938
Christopher Fauletb8d148a2020-10-09 08:50:26 +0200939 if (h1sl.st.status == 204 || h1sl.st.status == 304) {
940 /* Responses known to have no body. */
941 h1m.flags &= ~(H1_MF_CLEN|H1_MF_CHNK);
942 h1m.flags |= H1_MF_XFER_LEN;
943 h1m.curr_len = h1m.body_len = 0;
944 }
945 else if (h1m.flags & (H1_MF_CLEN|H1_MF_CHNK))
946 h1m.flags |= H1_MF_XFER_LEN;
947
Christopher Fauleta7b677c2018-11-29 16:48:49 +0100948 if (h1m.flags & H1_MF_VER_11)
949 flags |= HTX_SL_F_VER_11;
950 if (h1m.flags & H1_MF_XFER_ENC)
951 flags |= HTX_SL_F_XFER_ENC;
Christopher Fauletb8d148a2020-10-09 08:50:26 +0200952 if (h1m.flags & H1_MF_XFER_LEN) {
953 flags |= HTX_SL_F_XFER_LEN;
Christopher Fauleta66adf42020-11-05 22:43:41 +0100954 if (h1m.flags & H1_MF_CHNK) {
955 memprintf(errmsg, "chunk-encoded payload not supported");
956 goto error;
957 }
Christopher Fauletb8d148a2020-10-09 08:50:26 +0200958 else if (h1m.flags & H1_MF_CLEN) {
959 flags |= HTX_SL_F_CLEN;
960 if (h1m.body_len == 0)
961 flags |= HTX_SL_F_BODYLESS;
962 }
963 else
Christopher Faulet0d4ce932019-10-16 09:09:04 +0200964 flags |= HTX_SL_F_BODYLESS;
Christopher Fauleta7b677c2018-11-29 16:48:49 +0100965 }
Christopher Fauletb8d148a2020-10-09 08:50:26 +0200966
Christopher Fauleta66adf42020-11-05 22:43:41 +0100967 if ((flags & HTX_SL_F_BODYLESS) && raw.len > ret) {
968 memprintf(errmsg, "message payload not expected");
969 goto error;
970 }
971 if ((flags & HTX_SL_F_CLEN) && h1m.body_len != (raw.len - ret)) {
972 memprintf(errmsg, "payload size does not match the announced content-length (%lu != %lu)",
Willy Tarreau431a12c2020-11-06 14:24:02 +0100973 (unsigned long)(raw.len - ret), (unsigned long)h1m.body_len);
Christopher Fauleta66adf42020-11-05 22:43:41 +0100974 goto error;
975 }
Christopher Fauleta7b677c2018-11-29 16:48:49 +0100976
977 htx = htx_from_buf(buf);
978 sl = htx_add_stline(htx, HTX_BLK_RES_SL, flags, h1sl.st.v, h1sl.st.c, h1sl.st.r);
Christopher Fauleta66adf42020-11-05 22:43:41 +0100979 if (!sl || !htx_add_all_headers(htx, hdrs)) {
980 memprintf(errmsg, "unable to add headers into the HTX message");
Christopher Fauleta7b677c2018-11-29 16:48:49 +0100981 goto error;
Christopher Fauleta66adf42020-11-05 22:43:41 +0100982 }
Christopher Fauleta7b677c2018-11-29 16:48:49 +0100983 sl->info.res.status = h1sl.st.status;
984
Willy Tarreau0a7ef022019-05-28 10:30:11 +0200985 while (raw.len > ret) {
986 int sent = htx_add_data(htx, ist2(raw.ptr + ret, raw.len - ret));
Christopher Fauleta66adf42020-11-05 22:43:41 +0100987 if (!sent) {
988 memprintf(errmsg, "unable to add payload into the HTX message");
Christopher Fauleta7b677c2018-11-29 16:48:49 +0100989 goto error;
Christopher Fauleta66adf42020-11-05 22:43:41 +0100990 }
Willy Tarreau0a7ef022019-05-28 10:30:11 +0200991 ret += sent;
Christopher Fauleta7b677c2018-11-29 16:48:49 +0100992 }
Christopher Faulet1d5ec092019-06-26 14:23:54 +0200993
Christopher Fauleta66adf42020-11-05 22:43:41 +0100994 if (!htx_add_endof(htx, HTX_BLK_EOM)) {
995 memprintf(errmsg, "unable to add EOM into the HTX message");
Christopher Fauleta7b677c2018-11-29 16:48:49 +0100996 goto error;
Christopher Fauleta66adf42020-11-05 22:43:41 +0100997 }
Christopher Faulet1d5ec092019-06-26 14:23:54 +0200998
Christopher Faulet90cc4812019-07-22 16:49:30 +0200999 return 1;
Christopher Fauleta7b677c2018-11-29 16:48:49 +01001000
1001error:
1002 if (buf->size)
1003 free(buf->area);
Christopher Faulet90cc4812019-07-22 16:49:30 +02001004 return 0;
Christopher Fauleta7b677c2018-11-29 16:48:49 +01001005}
1006
Christopher Faulet18630642020-05-12 18:57:28 +02001007void release_http_reply(struct http_reply *http_reply)
1008{
1009 struct logformat_node *lf, *lfb;
1010 struct http_reply_hdr *hdr, *hdrb;
1011
1012 if (!http_reply)
1013 return;
1014
1015 free(http_reply->ctype);
1016 http_reply->ctype = NULL;
1017 list_for_each_entry_safe(hdr, hdrb, &http_reply->hdrs, list) {
1018 LIST_DEL(&hdr->list);
1019 list_for_each_entry_safe(lf, lfb, &hdr->value, list) {
1020 LIST_DEL(&lf->list);
1021 release_sample_expr(lf->expr);
1022 free(lf->arg);
1023 free(lf);
1024 }
1025 istfree(&hdr->name);
1026 free(hdr);
1027 }
1028
1029 if (http_reply->type == HTTP_REPLY_ERRFILES) {
1030 free(http_reply->body.http_errors);
1031 http_reply->body.http_errors = NULL;
1032 }
1033 else if (http_reply->type == HTTP_REPLY_RAW)
1034 chunk_destroy(&http_reply->body.obj);
1035 else if (http_reply->type == HTTP_REPLY_LOGFMT) {
1036 list_for_each_entry_safe(lf, lfb, &http_reply->body.fmt, list) {
1037 LIST_DEL(&lf->list);
1038 release_sample_expr(lf->expr);
1039 free(lf->arg);
1040 free(lf);
1041 }
1042 }
Christopher Faulet63d48242020-05-21 09:59:22 +02001043 free(http_reply);
Christopher Faulet18630642020-05-12 18:57:28 +02001044}
1045
Christopher Fauleta7b677c2018-11-29 16:48:49 +01001046static int http_htx_init(void)
1047{
Christopher Fauleta7b677c2018-11-29 16:48:49 +01001048 struct buffer chk;
1049 struct ist raw;
Christopher Fauleta66adf42020-11-05 22:43:41 +01001050 char *errmsg = NULL;
Christopher Fauleta7b677c2018-11-29 16:48:49 +01001051 int rc;
1052 int err_code = 0;
1053
Christopher Fauleta7b677c2018-11-29 16:48:49 +01001054 for (rc = 0; rc < HTTP_ERR_SIZE; rc++) {
1055 if (!http_err_msgs[rc]) {
Christopher Fauleta66adf42020-11-05 22:43:41 +01001056 ha_alert("Internal error: no default message defined for HTTP return code %d", rc);
Christopher Fauleta7b677c2018-11-29 16:48:49 +01001057 err_code |= ERR_ALERT | ERR_FATAL;
1058 continue;
1059 }
1060
1061 raw = ist2(http_err_msgs[rc], strlen(http_err_msgs[rc]));
Christopher Fauleta66adf42020-11-05 22:43:41 +01001062 if (!http_str_to_htx(&chk, raw, &errmsg)) {
1063 ha_alert("Internal error: invalid default message for HTTP return code %d: %s.\n",
1064 http_err_codes[rc], errmsg);
Christopher Fauleta7b677c2018-11-29 16:48:49 +01001065 err_code |= ERR_ALERT | ERR_FATAL;
1066 }
Christopher Fauleta66adf42020-11-05 22:43:41 +01001067 else if (errmsg) {
1068 ha_warning("invalid default message for HTTP return code %d: %s.\n", http_err_codes[rc], errmsg);
1069 err_code |= ERR_WARN;
1070 }
1071
1072 /* Reset errmsg */
1073 free(errmsg);
1074 errmsg = NULL;
1075
Christopher Fauletf7346382019-07-17 22:02:08 +02001076 http_err_chunks[rc] = chk;
Christopher Faulet1b13eca2020-05-14 09:54:26 +02001077 http_err_replies[rc].type = HTTP_REPLY_ERRMSG;
1078 http_err_replies[rc].status = http_err_codes[rc];
1079 http_err_replies[rc].ctype = NULL;
1080 LIST_INIT(&http_err_replies[rc].hdrs);
1081 http_err_replies[rc].body.errmsg = &http_err_chunks[rc];
Christopher Fauleta7b677c2018-11-29 16:48:49 +01001082 }
1083end:
1084 return err_code;
1085}
1086
Christopher Faulet58857752020-01-15 15:19:50 +01001087static void http_htx_deinit(void)
1088{
Christopher Faulet35cd81d2020-01-15 11:22:56 +01001089 struct http_errors *http_errs, *http_errsb;
Christopher Faulet5809e102020-05-14 17:31:52 +02001090 struct http_reply *http_rep, *http_repb;
Christopher Faulet58857752020-01-15 15:19:50 +01001091 struct ebpt_node *node, *next;
Christopher Fauletb6ea17c2020-05-13 21:45:22 +02001092 struct http_error_msg *http_errmsg;
Christopher Fauletde30bb72020-05-14 10:03:55 +02001093 int rc;
Christopher Faulet58857752020-01-15 15:19:50 +01001094
1095 node = ebpt_first(&http_error_messages);
1096 while (node) {
1097 next = ebpt_next(node);
1098 ebpt_delete(node);
Christopher Fauletb6ea17c2020-05-13 21:45:22 +02001099 http_errmsg = container_of(node, typeof(*http_errmsg), node);
1100 chunk_destroy(&http_errmsg->msg);
Christopher Faulet58857752020-01-15 15:19:50 +01001101 free(node->key);
Christopher Fauletb6ea17c2020-05-13 21:45:22 +02001102 free(http_errmsg);
Christopher Faulet58857752020-01-15 15:19:50 +01001103 node = next;
1104 }
Christopher Faulet35cd81d2020-01-15 11:22:56 +01001105
1106 list_for_each_entry_safe(http_errs, http_errsb, &http_errors_list, list) {
1107 free(http_errs->conf.file);
1108 free(http_errs->id);
Christopher Fauletde30bb72020-05-14 10:03:55 +02001109 for (rc = 0; rc < HTTP_ERR_SIZE; rc++)
1110 release_http_reply(http_errs->replies[rc]);
Christopher Faulet35cd81d2020-01-15 11:22:56 +01001111 LIST_DEL(&http_errs->list);
1112 free(http_errs);
1113 }
Christopher Faulet5809e102020-05-14 17:31:52 +02001114
1115 list_for_each_entry_safe(http_rep, http_repb, &http_replies_list, list) {
1116 LIST_DEL(&http_rep->list);
1117 release_http_reply(http_rep);
1118 }
Christopher Faulet58857752020-01-15 15:19:50 +01001119}
1120
Christopher Fauleta7b677c2018-11-29 16:48:49 +01001121REGISTER_CONFIG_POSTPARSER("http_htx", http_htx_init);
Christopher Faulet58857752020-01-15 15:19:50 +01001122REGISTER_POST_DEINIT(http_htx_deinit);
Christopher Faulet29f72842019-12-11 15:52:32 +01001123
Christopher Faulet58857752020-01-15 15:19:50 +01001124/* Reads content of the error file <file> and convert it into an HTX message. On
1125 * success, the HTX message is returned. On error, NULL is returned and an error
1126 * message is written into the <errmsg> buffer.
Christopher Faulet5031ef52020-01-15 11:22:07 +01001127 */
Christopher Faulet58857752020-01-15 15:19:50 +01001128struct buffer *http_load_errorfile(const char *file, char **errmsg)
Christopher Faulet5031ef52020-01-15 11:22:07 +01001129{
Christopher Faulet58857752020-01-15 15:19:50 +01001130 struct buffer *buf = NULL;
1131 struct buffer chk;
1132 struct ebpt_node *node;
Christopher Fauletb6ea17c2020-05-13 21:45:22 +02001133 struct http_error_msg *http_errmsg;
Christopher Faulet5031ef52020-01-15 11:22:07 +01001134 struct stat stat;
1135 char *err = NULL;
1136 int errnum, errlen;
1137 int fd = -1;
Christopher Faulet58857752020-01-15 15:19:50 +01001138
1139 /* already loaded */
1140 node = ebis_lookup_len(&http_error_messages, file, strlen(file));
1141 if (node) {
Christopher Fauletb6ea17c2020-05-13 21:45:22 +02001142 http_errmsg = container_of(node, typeof(*http_errmsg), node);
1143 buf = &http_errmsg->msg;
Christopher Faulet58857752020-01-15 15:19:50 +01001144 goto out;
1145 }
Christopher Faulet5031ef52020-01-15 11:22:07 +01001146
Christopher Faulet58857752020-01-15 15:19:50 +01001147 /* Read the error file content */
Christopher Faulet5031ef52020-01-15 11:22:07 +01001148 fd = open(file, O_RDONLY);
1149 if ((fd < 0) || (fstat(fd, &stat) < 0)) {
1150 memprintf(errmsg, "error opening file '%s'.", file);
1151 goto out;
1152 }
1153
1154 if (stat.st_size <= global.tune.bufsize)
1155 errlen = stat.st_size;
1156 else {
1157 ha_warning("custom error message file '%s' larger than %d bytes. Truncating.\n",
1158 file, global.tune.bufsize);
1159 errlen = global.tune.bufsize;
1160 }
1161
1162 err = malloc(errlen);
1163 if (!err) {
1164 memprintf(errmsg, "out of memory.");
1165 goto out;
1166 }
1167
1168 errnum = read(fd, err, errlen);
1169 if (errnum != errlen) {
1170 memprintf(errmsg, "error reading file '%s'.", file);
1171 goto out;
1172 }
1173
Christopher Faulet58857752020-01-15 15:19:50 +01001174 /* Create the node corresponding to the error file */
Christopher Fauletb6ea17c2020-05-13 21:45:22 +02001175 http_errmsg = calloc(1, sizeof(*http_errmsg));
1176 if (!http_errmsg) {
Christopher Faulet58857752020-01-15 15:19:50 +01001177 memprintf(errmsg, "out of memory.");
1178 goto out;
1179 }
Christopher Fauletb6ea17c2020-05-13 21:45:22 +02001180 http_errmsg->node.key = strdup(file);
1181 if (!http_errmsg->node.key) {
Christopher Faulet58857752020-01-15 15:19:50 +01001182 memprintf(errmsg, "out of memory.");
Christopher Fauletb6ea17c2020-05-13 21:45:22 +02001183 free(http_errmsg);
Christopher Faulet58857752020-01-15 15:19:50 +01001184 goto out;
1185 }
1186
1187 /* Convert the error file into an HTX message */
Christopher Fauleta66adf42020-11-05 22:43:41 +01001188 if (!http_str_to_htx(&chk, ist2(err, errlen), errmsg)) {
1189 memprintf(errmsg, "'%s': %s", file, *errmsg);
Christopher Fauletb6ea17c2020-05-13 21:45:22 +02001190 free(http_errmsg->node.key);
1191 free(http_errmsg);
Christopher Faulet5031ef52020-01-15 11:22:07 +01001192 goto out;
1193 }
1194
Christopher Faulet58857752020-01-15 15:19:50 +01001195 /* Insert the node in the tree and return the HTX message */
Christopher Fauletb6ea17c2020-05-13 21:45:22 +02001196 http_errmsg->msg = chk;
1197 ebis_insert(&http_error_messages, &http_errmsg->node);
1198 buf = &http_errmsg->msg;
Christopher Faulet58857752020-01-15 15:19:50 +01001199
Christopher Faulet5031ef52020-01-15 11:22:07 +01001200 out:
1201 if (fd >= 0)
1202 close(fd);
1203 free(err);
Christopher Faulet58857752020-01-15 15:19:50 +01001204 return buf;
Christopher Faulet5031ef52020-01-15 11:22:07 +01001205}
1206
Ilya Shipitsind4259502020-04-08 01:07:56 +05001207/* Convert the raw http message <msg> into an HTX message. On success, the HTX
Christopher Faulet58857752020-01-15 15:19:50 +01001208 * message is returned. On error, NULL is returned and an error message is
1209 * written into the <errmsg> buffer.
Christopher Fauletbdf65262020-01-16 15:51:59 +01001210 */
Christopher Faulet58857752020-01-15 15:19:50 +01001211struct buffer *http_load_errormsg(const char *key, const struct ist msg, char **errmsg)
Christopher Fauletbdf65262020-01-16 15:51:59 +01001212{
Christopher Faulet58857752020-01-15 15:19:50 +01001213 struct buffer *buf = NULL;
1214 struct buffer chk;
1215 struct ebpt_node *node;
Christopher Fauletb6ea17c2020-05-13 21:45:22 +02001216 struct http_error_msg *http_errmsg;
Christopher Faulet58857752020-01-15 15:19:50 +01001217
1218 /* already loaded */
1219 node = ebis_lookup_len(&http_error_messages, key, strlen(key));
1220 if (node) {
Christopher Fauletb6ea17c2020-05-13 21:45:22 +02001221 http_errmsg = container_of(node, typeof(*http_errmsg), node);
1222 buf = &http_errmsg->msg;
Christopher Faulet58857752020-01-15 15:19:50 +01001223 goto out;
1224 }
1225 /* Create the node corresponding to the error file */
Christopher Fauletb6ea17c2020-05-13 21:45:22 +02001226 http_errmsg = calloc(1, sizeof(*http_errmsg));
1227 if (!http_errmsg) {
Christopher Faulet58857752020-01-15 15:19:50 +01001228 memprintf(errmsg, "out of memory.");
1229 goto out;
1230 }
Christopher Fauletb6ea17c2020-05-13 21:45:22 +02001231 http_errmsg->node.key = strdup(key);
1232 if (!http_errmsg->node.key) {
Christopher Faulet58857752020-01-15 15:19:50 +01001233 memprintf(errmsg, "out of memory.");
Christopher Fauletb6ea17c2020-05-13 21:45:22 +02001234 free(http_errmsg);
Christopher Faulet58857752020-01-15 15:19:50 +01001235 goto out;
1236 }
Christopher Fauletbdf65262020-01-16 15:51:59 +01001237
1238 /* Convert the error file into an HTX message */
Christopher Fauleta66adf42020-11-05 22:43:41 +01001239 if (!http_str_to_htx(&chk, msg, errmsg)) {
1240 memprintf(errmsg, "invalid error message: %s", *errmsg);
Christopher Fauletb6ea17c2020-05-13 21:45:22 +02001241 free(http_errmsg->node.key);
1242 free(http_errmsg);
Christopher Fauletbdf65262020-01-16 15:51:59 +01001243 goto out;
1244 }
Christopher Fauletbdf65262020-01-16 15:51:59 +01001245
Christopher Faulet58857752020-01-15 15:19:50 +01001246 /* Insert the node in the tree and return the HTX message */
Christopher Fauletb6ea17c2020-05-13 21:45:22 +02001247 http_errmsg->msg = chk;
1248 ebis_insert(&http_error_messages, &http_errmsg->node);
1249 buf = &http_errmsg->msg;
Christopher Fauletbdf65262020-01-16 15:51:59 +01001250 out:
Christopher Faulet58857752020-01-15 15:19:50 +01001251 return buf;
Christopher Fauletbdf65262020-01-16 15:51:59 +01001252}
1253
Christopher Faulet5031ef52020-01-15 11:22:07 +01001254/* This function parses the raw HTTP error file <file> for the status code
Christopher Faulet58857752020-01-15 15:19:50 +01001255 * <status>. It returns NULL if there is any error, otherwise it return the
1256 * corresponding HTX message.
Christopher Faulet5031ef52020-01-15 11:22:07 +01001257 */
Christopher Faulet58857752020-01-15 15:19:50 +01001258struct buffer *http_parse_errorfile(int status, const char *file, char **errmsg)
Christopher Faulet5031ef52020-01-15 11:22:07 +01001259{
Christopher Faulet58857752020-01-15 15:19:50 +01001260 struct buffer *buf = NULL;
1261 int rc;
Christopher Faulet5031ef52020-01-15 11:22:07 +01001262
1263 for (rc = 0; rc < HTTP_ERR_SIZE; rc++) {
1264 if (http_err_codes[rc] == status) {
Christopher Faulet58857752020-01-15 15:19:50 +01001265 buf = http_load_errorfile(file, errmsg);
Christopher Faulet5031ef52020-01-15 11:22:07 +01001266 break;
1267 }
1268 }
1269
1270 if (rc >= HTTP_ERR_SIZE)
1271 memprintf(errmsg, "status code '%d' not handled.", status);
Christopher Faulet58857752020-01-15 15:19:50 +01001272 return buf;
Christopher Fauletbdf65262020-01-16 15:51:59 +01001273}
1274
1275/* This function creates HTX error message corresponding to a redirect message
1276 * for the status code <status>. <url> is used as location url for the
Christopher Faulet58857752020-01-15 15:19:50 +01001277 * redirect. <errloc> is used to know if it is a 302 or a 303 redirect. It
1278 * returns NULL if there is any error, otherwise it return the corresponding HTX
1279 * message.
Christopher Fauletbdf65262020-01-16 15:51:59 +01001280 */
Christopher Faulet58857752020-01-15 15:19:50 +01001281struct buffer *http_parse_errorloc(int errloc, int status, const char *url, char **errmsg)
Christopher Fauletbdf65262020-01-16 15:51:59 +01001282{
Christopher Faulet0bac4cd2020-05-27 10:11:59 +02001283 static const char *HTTP_302 =
1284 "HTTP/1.1 302 Found\r\n"
1285 "Cache-Control: no-cache\r\n"
1286 "Content-length: 0\r\n"
1287 "Location: "; /* not terminated since it will be concatenated with the URL */
1288 static const char *HTTP_303 =
1289 "HTTP/1.1 303 See Other\r\n"
1290 "Cache-Control: no-cache\r\n"
1291 "Content-length: 0\r\n"
1292 "Location: "; /* not terminated since it will be concatenated with the URL */
1293
Christopher Faulet58857752020-01-15 15:19:50 +01001294 struct buffer *buf = NULL;
Christopher Fauletbdf65262020-01-16 15:51:59 +01001295 const char *msg;
Christopher Faulet58857752020-01-15 15:19:50 +01001296 char *key = NULL, *err = NULL;
Christopher Fauletbdf65262020-01-16 15:51:59 +01001297 int rc, errlen;
Christopher Fauletbdf65262020-01-16 15:51:59 +01001298
1299 for (rc = 0; rc < HTTP_ERR_SIZE; rc++) {
1300 if (http_err_codes[rc] == status) {
Christopher Faulet58857752020-01-15 15:19:50 +01001301 /* Create the error key */
1302 if (!memprintf(&key, "errorloc%d %s", errloc, url)) {
1303 memprintf(errmsg, "out of memory.");
1304 goto out;
1305 }
Christopher Fauletbdf65262020-01-16 15:51:59 +01001306 /* Create the error message */
1307 msg = (errloc == 302 ? HTTP_302 : HTTP_303);
1308 errlen = strlen(msg) + strlen(url) + 5;
1309 err = malloc(errlen);
1310 if (!err) {
1311 memprintf(errmsg, "out of memory.");
1312 goto out;
1313 }
1314 errlen = snprintf(err, errlen, "%s%s\r\n\r\n", msg, url);
1315
1316 /* Load it */
Christopher Faulet58857752020-01-15 15:19:50 +01001317 buf = http_load_errormsg(key, ist2(err, errlen), errmsg);
Christopher Fauletbdf65262020-01-16 15:51:59 +01001318 break;
1319 }
1320 }
1321
1322 if (rc >= HTTP_ERR_SIZE)
1323 memprintf(errmsg, "status code '%d' not handled.", status);
1324out:
Christopher Faulet58857752020-01-15 15:19:50 +01001325 free(key);
Christopher Fauletbdf65262020-01-16 15:51:59 +01001326 free(err);
Christopher Faulet58857752020-01-15 15:19:50 +01001327 return buf;
Christopher Faulet5031ef52020-01-15 11:22:07 +01001328}
1329
Christopher Faulet7eea2412020-05-13 15:02:59 +02001330/* Check an "http reply" and, for replies referencing an http-errors section,
1331 * try to find the right section and the right error message in this section. If
1332 * found, the reply is updated. If the http-errors section exists but the error
1333 * message is not found, no error message is set to fallback on the default
1334 * ones. Otherwise (unknown section) an error is returned.
1335 *
1336 * The function returns 1 in success case, otherwise, it returns 0 and errmsg is
1337 * filled.
1338 */
1339int http_check_http_reply(struct http_reply *reply, struct proxy *px, char **errmsg)
1340{
1341 struct http_errors *http_errs;
1342 int ret = 1;
1343
1344 if (reply->type != HTTP_REPLY_ERRFILES)
1345 goto end;
1346
1347 list_for_each_entry(http_errs, &http_errors_list, list) {
1348 if (strcmp(http_errs->id, reply->body.http_errors) == 0) {
Christopher Faulete29a97e2020-05-14 14:49:25 +02001349 reply->type = HTTP_REPLY_INDIRECT;
Christopher Faulet7eea2412020-05-13 15:02:59 +02001350 free(reply->body.http_errors);
Christopher Faulete29a97e2020-05-14 14:49:25 +02001351 reply->body.reply = http_errs->replies[http_get_status_idx(reply->status)];
1352 if (!reply->body.reply)
Christopher Faulet7eea2412020-05-13 15:02:59 +02001353 ha_warning("Proxy '%s': status '%d' referenced by an http reply "
1354 "not declared in http-errors section '%s'.\n",
1355 px->id, reply->status, http_errs->id);
1356 break;
1357 }
1358 }
1359
1360 if (&http_errs->list == &http_errors_list) {
1361 memprintf(errmsg, "unknown http-errors section '%s' referenced by an http reply ",
1362 reply->body.http_errors);
1363 ret = 0;
1364 }
1365
1366 end:
1367 return ret;
1368}
1369
Christopher Faulet47e791e2020-05-13 14:36:55 +02001370/* Parse an "http reply". It returns the reply on success or NULL on error. This
1371 * function creates one of the following http replies :
1372 *
1373 * - HTTP_REPLY_EMPTY : dummy response, no payload
1374 * - HTTP_REPLY_ERRMSG : implicit error message depending on the status code or explicit one
1375 * - HTTP_REPLY_ERRFILES : points on an http-errors section (resolved during post-parsing)
1376 * - HTTP_REPLY_RAW : explicit file object ('file' argument)
1377 * - HTTP_REPLY_LOGFMT : explicit log-format string ('content' argument)
1378 *
1379 * The content-type must be defined for non-empty payload. It is ignored for
1380 * error messages (implicit or explicit). When an http-errors section is
1381 * referenced (HTTP_REPLY_ERRFILES), the real error message should be resolved
1382 * during the configuration validity check or dynamically. It is the caller
1383 * responsibility to choose. If no status code is configured, <default_status>
1384 * is set.
1385 */
1386struct http_reply *http_parse_http_reply(const char **args, int *orig_arg, struct proxy *px,
1387 int default_status, char **errmsg)
1388{
1389 struct logformat_node *lf, *lfb;
1390 struct http_reply *reply = NULL;
1391 struct http_reply_hdr *hdr, *hdrb;
1392 struct stat stat;
1393 const char *act_arg = NULL;
1394 char *obj = NULL;
1395 int cur_arg, cap, objlen = 0, fd = -1;
1396
1397
1398 reply = calloc(1, sizeof(*reply));
1399 if (!reply) {
1400 memprintf(errmsg, "out of memory");
1401 goto error;
1402 }
1403 LIST_INIT(&reply->hdrs);
1404 reply->type = HTTP_REPLY_EMPTY;
1405 reply->status = default_status;
1406
Christopher Faulet3b967c12020-05-15 15:47:44 +02001407 if (px->conf.args.ctx == ARGC_HERR)
1408 cap = (SMP_VAL_REQUEST | SMP_VAL_RESPONSE);
1409 else
1410 cap = ((px->conf.args.ctx == ARGC_HRQ)
1411 ? ((px->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR)
1412 : ((px->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR));
Christopher Faulet47e791e2020-05-13 14:36:55 +02001413
1414 cur_arg = *orig_arg;
1415 while (*args[cur_arg]) {
1416 if (strcmp(args[cur_arg], "status") == 0) {
1417 cur_arg++;
1418 if (!*args[cur_arg]) {
1419 memprintf(errmsg, "'%s' expects <status_code> as argument", args[cur_arg-1]);
1420 goto error;
1421 }
1422 reply->status = atol(args[cur_arg]);
1423 if (reply->status < 200 || reply->status > 599) {
1424 memprintf(errmsg, "Unexpected status code '%d'", reply->status);
1425 goto error;
1426 }
1427 cur_arg++;
1428 }
1429 else if (strcmp(args[cur_arg], "content-type") == 0) {
1430 cur_arg++;
1431 if (!*args[cur_arg]) {
1432 memprintf(errmsg, "'%s' expects <ctype> as argument", args[cur_arg-1]);
1433 goto error;
1434 }
1435 free(reply->ctype);
1436 reply->ctype = strdup(args[cur_arg]);
1437 cur_arg++;
1438 }
1439 else if (strcmp(args[cur_arg], "errorfiles") == 0) {
1440 if (reply->type != HTTP_REPLY_EMPTY) {
1441 memprintf(errmsg, "unexpected '%s' argument, '%s' already defined", args[cur_arg], act_arg);
1442 goto error;
1443 }
1444 act_arg = args[cur_arg];
1445 cur_arg++;
1446 if (!*args[cur_arg]) {
1447 memprintf(errmsg, "'%s' expects <name> as argument", args[cur_arg-1]);
1448 goto error;
1449 }
1450 reply->body.http_errors = strdup(args[cur_arg]);
1451 if (!reply->body.http_errors) {
1452 memprintf(errmsg, "out of memory");
1453 goto error;
1454 }
1455 reply->type = HTTP_REPLY_ERRFILES;
1456 cur_arg++;
1457 }
1458 else if (strcmp(args[cur_arg], "default-errorfiles") == 0) {
1459 if (reply->type != HTTP_REPLY_EMPTY) {
1460 memprintf(errmsg, "unexpected '%s' argument, '%s' already defined", args[cur_arg], act_arg);
1461 goto error;
1462 }
1463 act_arg = args[cur_arg];
1464 reply->type = HTTP_REPLY_ERRMSG;
1465 cur_arg++;
1466 }
1467 else if (strcmp(args[cur_arg], "errorfile") == 0) {
1468 if (reply->type != HTTP_REPLY_EMPTY) {
1469 memprintf(errmsg, "unexpected '%s' argument, '%s' already defined", args[cur_arg], act_arg);
1470 goto error;
1471 }
1472 act_arg = args[cur_arg];
1473 cur_arg++;
1474 if (!*args[cur_arg]) {
1475 memprintf(errmsg, "'%s' expects <fmt> as argument", args[cur_arg-1]);
1476 goto error;
1477 }
1478 reply->body.errmsg = http_load_errorfile(args[cur_arg], errmsg);
1479 if (!reply->body.errmsg) {
1480 goto error;
1481 }
1482 reply->type = HTTP_REPLY_ERRMSG;
1483 cur_arg++;
1484 }
1485 else if (strcmp(args[cur_arg], "file") == 0) {
1486 if (reply->type != HTTP_REPLY_EMPTY) {
1487 memprintf(errmsg, "unexpected '%s' argument, '%s' already defined", args[cur_arg], act_arg);
1488 goto error;
1489 }
1490 act_arg = args[cur_arg];
1491 cur_arg++;
1492 if (!*args[cur_arg]) {
1493 memprintf(errmsg, "'%s' expects <file> as argument", args[cur_arg-1]);
1494 goto error;
1495 }
1496 fd = open(args[cur_arg], O_RDONLY);
1497 if ((fd < 0) || (fstat(fd, &stat) < 0)) {
1498 memprintf(errmsg, "error opening file '%s'", args[cur_arg]);
1499 goto error;
1500 }
1501 if (stat.st_size > global.tune.bufsize) {
1502 memprintf(errmsg, "file '%s' exceeds the buffer size (%lld > %d)",
1503 args[cur_arg], (long long)stat.st_size, global.tune.bufsize);
1504 goto error;
1505 }
1506 objlen = stat.st_size;
1507 obj = malloc(objlen);
1508 if (!obj || read(fd, obj, objlen) != objlen) {
1509 memprintf(errmsg, "error reading file '%s'", args[cur_arg]);
1510 goto error;
1511 }
1512 close(fd);
1513 fd = -1;
1514 reply->type = HTTP_REPLY_RAW;
1515 chunk_initlen(&reply->body.obj, obj, global.tune.bufsize, objlen);
1516 obj = NULL;
1517 cur_arg++;
1518 }
1519 else if (strcmp(args[cur_arg], "string") == 0) {
1520 if (reply->type != HTTP_REPLY_EMPTY) {
1521 memprintf(errmsg, "unexpected '%s' argument, '%s' already defined", args[cur_arg], act_arg);
1522 goto error;
1523 }
1524 act_arg = args[cur_arg];
1525 cur_arg++;
1526 if (!*args[cur_arg]) {
1527 memprintf(errmsg, "'%s' expects <str> as argument", args[cur_arg-1]);
1528 goto error;
1529 }
1530 obj = strdup(args[cur_arg]);
1531 objlen = strlen(args[cur_arg]);
1532 if (!obj) {
1533 memprintf(errmsg, "out of memory");
1534 goto error;
1535 }
1536 reply->type = HTTP_REPLY_RAW;
1537 chunk_initlen(&reply->body.obj, obj, global.tune.bufsize, objlen);
1538 obj = NULL;
1539 cur_arg++;
1540 }
1541 else if (strcmp(args[cur_arg], "lf-file") == 0) {
1542 if (reply->type != HTTP_REPLY_EMPTY) {
1543 memprintf(errmsg, "unexpected '%s' argument, '%s' already defined", args[cur_arg], act_arg);
1544 goto error;
1545 }
1546 act_arg = args[cur_arg];
1547 cur_arg++;
1548 if (!*args[cur_arg]) {
1549 memprintf(errmsg, "'%s' expects <file> as argument", args[cur_arg-1]);
1550 goto error;
1551 }
1552 fd = open(args[cur_arg], O_RDONLY);
1553 if ((fd < 0) || (fstat(fd, &stat) < 0)) {
1554 memprintf(errmsg, "error opening file '%s'", args[cur_arg]);
1555 goto error;
1556 }
1557 if (stat.st_size > global.tune.bufsize) {
1558 memprintf(errmsg, "file '%s' exceeds the buffer size (%lld > %d)",
1559 args[cur_arg], (long long)stat.st_size, global.tune.bufsize);
1560 goto error;
1561 }
1562 objlen = stat.st_size;
1563 obj = malloc(objlen + 1);
1564 if (!obj || read(fd, obj, objlen) != objlen) {
1565 memprintf(errmsg, "error reading file '%s'", args[cur_arg]);
1566 goto error;
1567 }
1568 close(fd);
1569 fd = -1;
1570 obj[objlen] = '\0';
1571 reply->type = HTTP_REPLY_LOGFMT;
1572 cur_arg++;
1573 }
1574 else if (strcmp(args[cur_arg], "lf-string") == 0) {
1575 if (reply->type != HTTP_REPLY_EMPTY) {
1576 memprintf(errmsg, "unexpected '%s' argument, '%s' already defined", args[cur_arg], act_arg);
1577 goto error;
1578 }
1579 act_arg = args[cur_arg];
1580 cur_arg++;
1581 if (!*args[cur_arg]) {
1582 memprintf(errmsg, "'%s' expects <fmt> as argument", args[cur_arg-1]);
1583 goto error;
1584 }
1585 obj = strdup(args[cur_arg]);
1586 objlen = strlen(args[cur_arg]);
1587 reply->type = HTTP_REPLY_LOGFMT;
1588 cur_arg++;
1589 }
1590 else if (strcmp(args[cur_arg], "hdr") == 0) {
1591 cur_arg++;
1592 if (!*args[cur_arg] || !*args[cur_arg+1]) {
1593 memprintf(errmsg, "'%s' expects <name> and <value> as arguments", args[cur_arg-1]);
1594 goto error;
1595 }
1596 if (strcasecmp(args[cur_arg], "content-length") == 0 ||
1597 strcasecmp(args[cur_arg], "transfer-encoding") == 0 ||
1598 strcasecmp(args[cur_arg], "content-type") == 0) {
1599 ha_warning("parsing [%s:%d] : header '%s' always ignored by the http reply.\n",
1600 px->conf.args.file, px->conf.args.line, args[cur_arg]);
1601 cur_arg += 2;
1602 continue;
1603 }
1604 hdr = calloc(1, sizeof(*hdr));
1605 if (!hdr) {
1606 memprintf(errmsg, "'%s' : out of memory", args[cur_arg-1]);
1607 goto error;
1608 }
Christopher Fauletd6e31232020-05-21 10:10:41 +02001609 LIST_ADDQ(&reply->hdrs, &hdr->list);
Christopher Faulet47e791e2020-05-13 14:36:55 +02001610 LIST_INIT(&hdr->value);
1611 hdr->name = ist(strdup(args[cur_arg]));
1612 if (!isttest(hdr->name)) {
1613 memprintf(errmsg, "out of memory");
1614 goto error;
1615 }
Christopher Faulet47e791e2020-05-13 14:36:55 +02001616 if (!parse_logformat_string(args[cur_arg+1], px, &hdr->value, LOG_OPT_HTTP, cap, errmsg))
1617 goto error;
1618
1619 free(px->conf.lfs_file);
1620 px->conf.lfs_file = strdup(px->conf.args.file);
1621 px->conf.lfs_line = px->conf.args.line;
1622 cur_arg += 2;
1623 }
1624 else
1625 break;
1626 }
1627
1628 if (reply->type == HTTP_REPLY_EMPTY) { /* no payload */
1629 if (reply->ctype) {
1630 ha_warning("parsing [%s:%d] : content-type '%s' ignored by the http reply because"
1631 " neither errorfile nor payload defined.\n",
1632 px->conf.args.file, px->conf.args.line, reply->ctype);
1633 free(reply->ctype);
1634 reply->ctype = NULL;
1635 }
1636 }
1637 else if (reply->type == HTTP_REPLY_ERRFILES || reply->type == HTTP_REPLY_ERRMSG) { /* errorfiles or errorfile */
1638
1639 if (reply->type != HTTP_REPLY_ERRMSG || !reply->body.errmsg) {
1640 /* default errorfile or errorfiles: check the status */
1641 int rc;
1642
1643 for (rc = 0; rc < HTTP_ERR_SIZE; rc++) {
1644 if (http_err_codes[rc] == reply->status)
1645 break;
1646 }
1647
1648 if (rc >= HTTP_ERR_SIZE) {
1649 memprintf(errmsg, "status code '%d' not handled by default with '%s' argument.",
1650 reply->status, act_arg);
1651 goto error;
1652 }
1653 }
1654
1655 if (reply->ctype) {
1656 ha_warning("parsing [%s:%d] : content-type '%s' ignored by the http reply when used "
1657 "with an erorrfile.\n",
1658 px->conf.args.file, px->conf.args.line, reply->ctype);
1659 free(reply->ctype);
1660 reply->ctype = NULL;
1661 }
1662 if (!LIST_ISEMPTY(&reply->hdrs)) {
1663 ha_warning("parsing [%s:%d] : hdr parameters ignored by the http reply when used "
1664 "with an erorrfile.\n",
1665 px->conf.args.file, px->conf.args.line);
1666 list_for_each_entry_safe(hdr, hdrb, &reply->hdrs, list) {
1667 LIST_DEL(&hdr->list);
1668 list_for_each_entry_safe(lf, lfb, &hdr->value, list) {
1669 LIST_DEL(&lf->list);
1670 release_sample_expr(lf->expr);
1671 free(lf->arg);
1672 free(lf);
1673 }
1674 istfree(&hdr->name);
1675 free(hdr);
1676 }
1677 }
1678 }
1679 else if (reply->type == HTTP_REPLY_RAW) { /* explicit parameter using 'file' parameter*/
Christopher Fauletb8d148a2020-10-09 08:50:26 +02001680 if ((reply->status == 204 || reply->status == 304) && objlen) {
1681 memprintf(errmsg, "No body expected for %d responses", reply->status);
1682 goto error;
1683 }
Christopher Faulet47e791e2020-05-13 14:36:55 +02001684 if (!reply->ctype && objlen) {
1685 memprintf(errmsg, "a content type must be defined when non-empty payload is configured");
1686 goto error;
1687 }
1688 if (reply->ctype && !b_data(&reply->body.obj)) {
1689 ha_warning("parsing [%s:%d] : content-type '%s' ignored by the http reply when used "
Ilya Shipitsin47d17182020-06-21 21:42:57 +05001690 "with an empty payload.\n",
Christopher Faulet47e791e2020-05-13 14:36:55 +02001691 px->conf.args.file, px->conf.args.line, reply->ctype);
1692 free(reply->ctype);
1693 reply->ctype = NULL;
1694 }
1695 if (b_room(&reply->body.obj) < global.tune.maxrewrite) {
1696 ha_warning("parsing [%s:%d] : http reply payload runs over the buffer space reserved to headers rewriting."
1697 " It may lead to internal errors if strict rewriting mode is enabled.\n",
1698 px->conf.args.file, px->conf.args.line);
1699 }
1700 }
1701 else if (reply->type == HTTP_REPLY_LOGFMT) { /* log-format payload using 'lf-file' of 'lf-string' parameter */
1702 LIST_INIT(&reply->body.fmt);
Christopher Fauletb8d148a2020-10-09 08:50:26 +02001703 if ((reply->status == 204 || reply->status == 304)) {
1704 memprintf(errmsg, "No body expected for %d responses", reply->status);
1705 goto error;
1706 }
Christopher Faulet47e791e2020-05-13 14:36:55 +02001707 if (!reply->ctype) {
1708 memprintf(errmsg, "a content type must be defined with a log-format payload");
1709 goto error;
1710 }
1711 if (!parse_logformat_string(obj, px, &reply->body.fmt, LOG_OPT_HTTP, cap, errmsg))
1712 goto error;
1713
1714 free(px->conf.lfs_file);
1715 px->conf.lfs_file = strdup(px->conf.args.file);
1716 px->conf.lfs_line = px->conf.args.line;
1717 }
1718
1719 free(obj);
1720 *orig_arg = cur_arg;
1721 return reply;
1722
1723 error:
1724 free(obj);
1725 if (fd >= 0)
1726 close(fd);
1727 release_http_reply(reply);
1728 return NULL;
1729}
1730
Christopher Faulet07f41f72020-01-16 16:16:06 +01001731/* Parses the "errorloc[302|303]" proxy keyword */
1732static int proxy_parse_errorloc(char **args, int section, struct proxy *curpx,
1733 struct proxy *defpx, const char *file, int line,
1734 char **errmsg)
1735{
Christopher Faulet76edc0f2020-01-13 15:52:01 +01001736 struct conf_errors *conf_err;
Christopher Faulet5809e102020-05-14 17:31:52 +02001737 struct http_reply *reply;
Christopher Faulet07f41f72020-01-16 16:16:06 +01001738 struct buffer *msg;
Christopher Faulet76edc0f2020-01-13 15:52:01 +01001739 int errloc, status;
1740 int ret = 0;
Christopher Faulet07f41f72020-01-16 16:16:06 +01001741
1742 if (warnifnotcap(curpx, PR_CAP_FE | PR_CAP_BE, file, line, args[0], NULL)) {
1743 ret = 1;
1744 goto out;
1745 }
1746
1747 if (*(args[1]) == 0 || *(args[2]) == 0) {
1748 memprintf(errmsg, "%s : expects <status_code> and <url> as arguments.\n", args[0]);
1749 ret = -1;
1750 goto out;
1751 }
1752
1753 status = atol(args[1]);
Tim Duesterhuse5ff1412021-01-02 22:31:53 +01001754 errloc = (strcmp(args[0], "errorloc303") == 0 ? 303 : 302);
Christopher Faulet07f41f72020-01-16 16:16:06 +01001755 msg = http_parse_errorloc(errloc, status, args[2], errmsg);
1756 if (!msg) {
1757 memprintf(errmsg, "%s : %s", args[0], *errmsg);
1758 ret = -1;
1759 goto out;
1760 }
Christopher Faulet5809e102020-05-14 17:31:52 +02001761
1762 reply = calloc(1, sizeof(*reply));
1763 if (!reply) {
1764 memprintf(errmsg, "%s : out of memory.", args[0]);
1765 ret = -1;
1766 goto out;
1767 }
1768 reply->type = HTTP_REPLY_ERRMSG;
1769 reply->status = status;
1770 reply->ctype = NULL;
1771 LIST_INIT(&reply->hdrs);
1772 reply->body.errmsg = msg;
1773 LIST_ADDQ(&http_replies_list, &reply->list);
Christopher Faulet07f41f72020-01-16 16:16:06 +01001774
Christopher Faulet76edc0f2020-01-13 15:52:01 +01001775 conf_err = calloc(1, sizeof(*conf_err));
1776 if (!conf_err) {
1777 memprintf(errmsg, "%s : out of memory.", args[0]);
Christopher Faulet5809e102020-05-14 17:31:52 +02001778 free(reply);
Christopher Faulet76edc0f2020-01-13 15:52:01 +01001779 ret = -1;
1780 goto out;
1781 }
1782 conf_err->type = 1;
1783 conf_err->info.errorfile.status = status;
Christopher Faulet5809e102020-05-14 17:31:52 +02001784 conf_err->info.errorfile.reply = reply;
1785
Christopher Faulet76edc0f2020-01-13 15:52:01 +01001786 conf_err->file = strdup(file);
1787 conf_err->line = line;
1788 LIST_ADDQ(&curpx->conf.errors, &conf_err->list);
Christopher Faulet07f41f72020-01-16 16:16:06 +01001789
Christopher Fauleta66adf42020-11-05 22:43:41 +01001790 /* handle warning message */
1791 if (*errmsg)
1792 ret = 1;
Christopher Faulet07f41f72020-01-16 16:16:06 +01001793 out:
1794 return ret;
Christopher Faulet07f41f72020-01-16 16:16:06 +01001795
Christopher Faulet76edc0f2020-01-13 15:52:01 +01001796}
Christopher Faulet07f41f72020-01-16 16:16:06 +01001797
1798/* Parses the "errorfile" proxy keyword */
1799static int proxy_parse_errorfile(char **args, int section, struct proxy *curpx,
1800 struct proxy *defpx, const char *file, int line,
1801 char **errmsg)
1802{
Christopher Faulet76edc0f2020-01-13 15:52:01 +01001803 struct conf_errors *conf_err;
Christopher Faulet5809e102020-05-14 17:31:52 +02001804 struct http_reply *reply;
Christopher Faulet07f41f72020-01-16 16:16:06 +01001805 struct buffer *msg;
Christopher Faulet76edc0f2020-01-13 15:52:01 +01001806 int status;
1807 int ret = 0;
Christopher Faulet07f41f72020-01-16 16:16:06 +01001808
1809 if (warnifnotcap(curpx, PR_CAP_FE | PR_CAP_BE, file, line, args[0], NULL)) {
1810 ret = 1;
1811 goto out;
1812 }
1813
1814 if (*(args[1]) == 0 || *(args[2]) == 0) {
1815 memprintf(errmsg, "%s : expects <status_code> and <file> as arguments.\n", args[0]);
1816 ret = -1;
1817 goto out;
1818 }
1819
1820 status = atol(args[1]);
1821 msg = http_parse_errorfile(status, args[2], errmsg);
1822 if (!msg) {
1823 memprintf(errmsg, "%s : %s", args[0], *errmsg);
1824 ret = -1;
1825 goto out;
1826 }
Christopher Faulet76edc0f2020-01-13 15:52:01 +01001827
Christopher Faulet5809e102020-05-14 17:31:52 +02001828 reply = calloc(1, sizeof(*reply));
1829 if (!reply) {
1830 memprintf(errmsg, "%s : out of memory.", args[0]);
1831 ret = -1;
1832 goto out;
1833 }
1834 reply->type = HTTP_REPLY_ERRMSG;
1835 reply->status = status;
1836 reply->ctype = NULL;
1837 LIST_INIT(&reply->hdrs);
1838 reply->body.errmsg = msg;
1839 LIST_ADDQ(&http_replies_list, &reply->list);
1840
Christopher Faulet76edc0f2020-01-13 15:52:01 +01001841 conf_err = calloc(1, sizeof(*conf_err));
1842 if (!conf_err) {
1843 memprintf(errmsg, "%s : out of memory.", args[0]);
Christopher Faulet5809e102020-05-14 17:31:52 +02001844 free(reply);
Christopher Faulet76edc0f2020-01-13 15:52:01 +01001845 ret = -1;
1846 goto out;
1847 }
1848 conf_err->type = 1;
1849 conf_err->info.errorfile.status = status;
Christopher Faulet5809e102020-05-14 17:31:52 +02001850 conf_err->info.errorfile.reply = reply;
Christopher Faulet76edc0f2020-01-13 15:52:01 +01001851 conf_err->file = strdup(file);
1852 conf_err->line = line;
1853 LIST_ADDQ(&curpx->conf.errors, &conf_err->list);
1854
Christopher Fauleta66adf42020-11-05 22:43:41 +01001855 /* handle warning message */
1856 if (*errmsg)
1857 ret = 1;
Christopher Faulet76edc0f2020-01-13 15:52:01 +01001858 out:
1859 return ret;
1860
1861}
1862
1863/* Parses the "errorfiles" proxy keyword */
1864static int proxy_parse_errorfiles(char **args, int section, struct proxy *curpx,
1865 struct proxy *defpx, const char *file, int line,
1866 char **err)
1867{
1868 struct conf_errors *conf_err = NULL;
1869 char *name = NULL;
1870 int rc, ret = 0;
1871
1872 if (warnifnotcap(curpx, PR_CAP_FE | PR_CAP_BE, file, line, args[0], NULL)) {
1873 ret = 1;
1874 goto out;
1875 }
1876
1877 if (!*(args[1])) {
1878 memprintf(err, "%s : expects <name> as argument.", args[0]);
1879 ret = -1;
1880 goto out;
1881 }
1882
1883 name = strdup(args[1]);
1884 conf_err = calloc(1, sizeof(*conf_err));
1885 if (!name || !conf_err) {
1886 memprintf(err, "%s : out of memory.", args[0]);
Christopher Faulet76edc0f2020-01-13 15:52:01 +01001887 goto error;
1888 }
1889 conf_err->type = 0;
1890
1891 conf_err->info.errorfiles.name = name;
1892 if (!*(args[2])) {
1893 for (rc = 0; rc < HTTP_ERR_SIZE; rc++)
1894 conf_err->info.errorfiles.status[rc] = 1;
1895 }
1896 else {
1897 int cur_arg, status;
1898 for (cur_arg = 2; *(args[cur_arg]); cur_arg++) {
1899 status = atol(args[cur_arg]);
1900
1901 for (rc = 0; rc < HTTP_ERR_SIZE; rc++) {
1902 if (http_err_codes[rc] == status) {
1903 conf_err->info.errorfiles.status[rc] = 2;
1904 break;
1905 }
1906 }
1907 if (rc >= HTTP_ERR_SIZE) {
1908 memprintf(err, "%s : status code '%d' not handled.", args[0], status);
Christopher Faulet7cde96c2020-01-21 10:10:11 +01001909 goto error;
Christopher Faulet76edc0f2020-01-13 15:52:01 +01001910 }
1911 }
1912 }
1913 conf_err->file = strdup(file);
1914 conf_err->line = line;
1915 LIST_ADDQ(&curpx->conf.errors, &conf_err->list);
1916 out:
1917 return ret;
1918
1919 error:
1920 free(name);
1921 free(conf_err);
Christopher Faulet7cde96c2020-01-21 10:10:11 +01001922 ret = -1;
Christopher Faulet76edc0f2020-01-13 15:52:01 +01001923 goto out;
1924}
1925
Christopher Faulet3b967c12020-05-15 15:47:44 +02001926/* Parses the "http-error" proxy keyword */
1927static int proxy_parse_http_error(char **args, int section, struct proxy *curpx,
1928 struct proxy *defpx, const char *file, int line,
1929 char **errmsg)
1930{
1931 struct conf_errors *conf_err;
1932 struct http_reply *reply = NULL;
1933 int rc, cur_arg, ret = 0;
1934
1935 if (warnifnotcap(curpx, PR_CAP_FE | PR_CAP_BE, file, line, args[0], NULL)) {
1936 ret = 1;
1937 goto out;
1938 }
1939
1940 cur_arg = 1;
1941 curpx->conf.args.ctx = ARGC_HERR;
1942 reply = http_parse_http_reply((const char **)args, &cur_arg, curpx, 0, errmsg);
1943 if (!reply) {
1944 memprintf(errmsg, "%s : %s", args[0], *errmsg);
1945 goto error;
1946 }
1947 else if (!reply->status) {
1948 memprintf(errmsg, "%s : expects at least a <status> as arguments.\n", args[0]);
1949 goto error;
1950 }
1951
1952 for (rc = 0; rc < HTTP_ERR_SIZE; rc++) {
1953 if (http_err_codes[rc] == reply->status)
1954 break;
1955 }
1956
1957 if (rc >= HTTP_ERR_SIZE) {
1958 memprintf(errmsg, "%s: status code '%d' not handled.", args[0], reply->status);
1959 goto error;
1960 }
1961 if (*args[cur_arg]) {
1962 memprintf(errmsg, "%s : unknown keyword '%s'.", args[0], args[cur_arg]);
1963 goto error;
1964 }
1965
1966 conf_err = calloc(1, sizeof(*conf_err));
1967 if (!conf_err) {
1968 memprintf(errmsg, "%s : out of memory.", args[0]);
1969 goto error;
1970 }
1971 if (reply->type == HTTP_REPLY_ERRFILES) {
1972 int rc = http_get_status_idx(reply->status);
1973
1974 conf_err->type = 2;
1975 conf_err->info.errorfiles.name = reply->body.http_errors;
1976 conf_err->info.errorfiles.status[rc] = 2;
1977 reply->body.http_errors = NULL;
1978 release_http_reply(reply);
1979 }
1980 else {
1981 conf_err->type = 1;
1982 conf_err->info.errorfile.status = reply->status;
1983 conf_err->info.errorfile.reply = reply;
1984 LIST_ADDQ(&http_replies_list, &reply->list);
1985 }
1986 conf_err->file = strdup(file);
1987 conf_err->line = line;
1988 LIST_ADDQ(&curpx->conf.errors, &conf_err->list);
1989
Christopher Faulet3005d282020-11-13 10:58:01 +01001990 /* handle warning message */
1991 if (*errmsg)
1992 ret = 1;
Christopher Faulet3b967c12020-05-15 15:47:44 +02001993 out:
1994 return ret;
1995
1996 error:
1997 release_http_reply(reply);
1998 ret = -1;
1999 goto out;
2000
2001}
2002
Christopher Faulet76edc0f2020-01-13 15:52:01 +01002003/* Check "errorfiles" proxy keyword */
2004static int proxy_check_errors(struct proxy *px)
2005{
2006 struct conf_errors *conf_err, *conf_err_back;
2007 struct http_errors *http_errs;
Christopher Fauletfc633b62020-11-06 15:24:23 +01002008 int rc, err = ERR_NONE;
Christopher Faulet76edc0f2020-01-13 15:52:01 +01002009
2010 list_for_each_entry_safe(conf_err, conf_err_back, &px->conf.errors, list) {
2011 if (conf_err->type == 1) {
2012 /* errorfile */
2013 rc = http_get_status_idx(conf_err->info.errorfile.status);
Christopher Faulet40e85692020-05-14 17:34:31 +02002014 px->replies[rc] = conf_err->info.errorfile.reply;
Christopher Faulet3b967c12020-05-15 15:47:44 +02002015
2016 /* For proxy, to rely on default replies, just don't reference a reply */
2017 if (px->replies[rc]->type == HTTP_REPLY_ERRMSG && !px->replies[rc]->body.errmsg)
2018 px->replies[rc] = NULL;
Christopher Faulet76edc0f2020-01-13 15:52:01 +01002019 }
2020 else {
2021 /* errorfiles */
2022 list_for_each_entry(http_errs, &http_errors_list, list) {
2023 if (strcmp(http_errs->id, conf_err->info.errorfiles.name) == 0)
2024 break;
2025 }
Christopher Faulet07f41f72020-01-16 16:16:06 +01002026
Christopher Faulet76edc0f2020-01-13 15:52:01 +01002027 /* unknown http-errors section */
2028 if (&http_errs->list == &http_errors_list) {
2029 ha_alert("config : proxy '%s': unknown http-errors section '%s' (at %s:%d).\n",
2030 px->id, conf_err->info.errorfiles.name, conf_err->file, conf_err->line);
2031 err |= ERR_ALERT | ERR_FATAL;
2032 free(conf_err->info.errorfiles.name);
2033 goto next;
2034 }
2035
2036 free(conf_err->info.errorfiles.name);
2037 for (rc = 0; rc < HTTP_ERR_SIZE; rc++) {
2038 if (conf_err->info.errorfiles.status[rc] > 0) {
Christopher Fauletf1fedc32020-05-15 14:30:32 +02002039 if (http_errs->replies[rc])
Christopher Faulet40e85692020-05-14 17:34:31 +02002040 px->replies[rc] = http_errs->replies[rc];
Christopher Faulet76edc0f2020-01-13 15:52:01 +01002041 else if (conf_err->info.errorfiles.status[rc] == 2)
2042 ha_warning("config: proxy '%s' : status '%d' not declared in"
2043 " http-errors section '%s' (at %s:%d).\n",
2044 px->id, http_err_codes[rc], http_errs->id,
2045 conf_err->file, conf_err->line);
2046 }
2047 }
2048 }
2049 next:
2050 LIST_DEL(&conf_err->list);
2051 free(conf_err->file);
2052 free(conf_err);
2053 }
Christopher Faulet07f41f72020-01-16 16:16:06 +01002054
2055 out:
Christopher Faulet76edc0f2020-01-13 15:52:01 +01002056 return err;
2057}
2058
Christopher Faulet0a589fd2020-01-22 14:47:04 +01002059static int post_check_errors()
2060{
2061 struct ebpt_node *node;
Christopher Fauletb6ea17c2020-05-13 21:45:22 +02002062 struct http_error_msg *http_errmsg;
Christopher Faulet0a589fd2020-01-22 14:47:04 +01002063 struct htx *htx;
Christopher Fauletfc633b62020-11-06 15:24:23 +01002064 int err_code = ERR_NONE;
Christopher Faulet0a589fd2020-01-22 14:47:04 +01002065
2066 node = ebpt_first(&http_error_messages);
2067 while (node) {
Christopher Fauletb6ea17c2020-05-13 21:45:22 +02002068 http_errmsg = container_of(node, typeof(*http_errmsg), node);
2069 if (b_is_null(&http_errmsg->msg))
Christopher Faulet0a589fd2020-01-22 14:47:04 +01002070 goto next;
Christopher Fauletb6ea17c2020-05-13 21:45:22 +02002071 htx = htxbuf(&http_errmsg->msg);
Christopher Faulet0a589fd2020-01-22 14:47:04 +01002072 if (htx_free_data_space(htx) < global.tune.maxrewrite) {
2073 ha_warning("config: errorfile '%s' runs over the buffer space"
Ilya Shipitsin47d17182020-06-21 21:42:57 +05002074 " reserved to headers rewriting. It may lead to internal errors if "
Christopher Faulet6d0c3df2020-01-22 09:26:35 +01002075 " http-after-response rules are evaluated on this message.\n",
Christopher Faulet0a589fd2020-01-22 14:47:04 +01002076 (char *)node->key);
2077 err_code |= ERR_WARN;
2078 }
2079 next:
2080 node = ebpt_next(node);
2081 }
2082
2083 return err_code;
2084}
2085
Christopher Faulet76edc0f2020-01-13 15:52:01 +01002086int proxy_dup_default_conf_errors(struct proxy *curpx, struct proxy *defpx, char **errmsg)
2087{
2088 struct conf_errors *conf_err, *new_conf_err = NULL;
2089 int ret = 0;
2090
2091 list_for_each_entry(conf_err, &defpx->conf.errors, list) {
2092 new_conf_err = calloc(1, sizeof(*new_conf_err));
2093 if (!new_conf_err) {
2094 memprintf(errmsg, "unable to duplicate default errors (out of memory).");
2095 goto out;
2096 }
2097 new_conf_err->type = conf_err->type;
2098 if (conf_err->type == 1) {
2099 new_conf_err->info.errorfile.status = conf_err->info.errorfile.status;
Christopher Faulet40e85692020-05-14 17:34:31 +02002100 new_conf_err->info.errorfile.reply = conf_err->info.errorfile.reply;
Christopher Faulet76edc0f2020-01-13 15:52:01 +01002101 }
2102 else {
2103 new_conf_err->info.errorfiles.name = strdup(conf_err->info.errorfiles.name);
2104 if (!new_conf_err->info.errorfiles.name) {
2105 memprintf(errmsg, "unable to duplicate default errors (out of memory).");
2106 goto out;
2107 }
2108 memcpy(&new_conf_err->info.errorfiles.status, &conf_err->info.errorfiles.status,
2109 sizeof(conf_err->info.errorfiles.status));
2110 }
2111 new_conf_err->file = strdup(conf_err->file);
2112 new_conf_err->line = conf_err->line;
2113 LIST_ADDQ(&curpx->conf.errors, &new_conf_err->list);
2114 new_conf_err = NULL;
2115 }
2116 ret = 1;
2117
2118 out:
2119 free(new_conf_err);
Christopher Faulet07f41f72020-01-16 16:16:06 +01002120 return ret;
Christopher Faulet76edc0f2020-01-13 15:52:01 +01002121}
2122
2123void proxy_release_conf_errors(struct proxy *px)
2124{
2125 struct conf_errors *conf_err, *conf_err_back;
Christopher Faulet07f41f72020-01-16 16:16:06 +01002126
Christopher Faulet76edc0f2020-01-13 15:52:01 +01002127 list_for_each_entry_safe(conf_err, conf_err_back, &px->conf.errors, list) {
2128 if (conf_err->type == 0)
2129 free(conf_err->info.errorfiles.name);
2130 LIST_DEL(&conf_err->list);
2131 free(conf_err->file);
2132 free(conf_err);
2133 }
Christopher Faulet35cd81d2020-01-15 11:22:56 +01002134}
2135
2136/*
2137 * Parse an <http-errors> section.
2138 * Returns the error code, 0 if OK, or any combination of :
2139 * - ERR_ABORT: must abort ASAP
2140 * - ERR_FATAL: we can continue parsing but not start the service
2141 * - ERR_WARN: a warning has been emitted
2142 * - ERR_ALERT: an alert has been emitted
2143 * Only the two first ones can stop processing, the two others are just
2144 * indicators.
2145 */
2146static int cfg_parse_http_errors(const char *file, int linenum, char **args, int kwm)
2147{
2148 static struct http_errors *curr_errs = NULL;
2149 int err_code = 0;
2150 const char *err;
2151 char *errmsg = NULL;
2152
2153 if (strcmp(args[0], "http-errors") == 0) { /* new errors section */
2154 if (!*args[1]) {
2155 ha_alert("parsing [%s:%d] : missing name for http-errors section.\n", file, linenum);
2156 err_code |= ERR_ALERT | ERR_ABORT;
2157 goto out;
2158 }
2159
2160 err = invalid_char(args[1]);
2161 if (err) {
2162 ha_alert("parsing [%s:%d] : character '%c' is not permitted in '%s' name '%s'.\n",
2163 file, linenum, *err, args[0], args[1]);
2164 err_code |= ERR_ALERT | ERR_FATAL;
2165 }
2166
2167 list_for_each_entry(curr_errs, &http_errors_list, list) {
2168 /* Error if two errors section owns the same name */
2169 if (strcmp(curr_errs->id, args[1]) == 0) {
2170 ha_alert("parsing [%s:%d]: http-errors section '%s' already exists (declared at %s:%d).\n",
2171 file, linenum, args[1], curr_errs->conf.file, curr_errs->conf.line);
2172 err_code |= ERR_ALERT | ERR_FATAL;
2173 }
2174 }
2175
2176 if ((curr_errs = calloc(1, sizeof(*curr_errs))) == NULL) {
2177 ha_alert("parsing [%s:%d] : out of memory.\n", file, linenum);
2178 err_code |= ERR_ALERT | ERR_ABORT;
2179 goto out;
2180 }
2181
2182 LIST_ADDQ(&http_errors_list, &curr_errs->list);
2183 curr_errs->id = strdup(args[1]);
2184 curr_errs->conf.file = strdup(file);
2185 curr_errs->conf.line = linenum;
2186 }
Tim Duesterhuse5ff1412021-01-02 22:31:53 +01002187 else if (strcmp(args[0], "errorfile") == 0) { /* error message from a file */
Christopher Fauletde30bb72020-05-14 10:03:55 +02002188 struct http_reply *reply;
Christopher Faulet35cd81d2020-01-15 11:22:56 +01002189 struct buffer *msg;
2190 int status, rc;
2191
2192 if (*(args[1]) == 0 || *(args[2]) == 0) {
2193 ha_alert("parsing [%s:%d] : %s: expects <status_code> and <file> as arguments.\n",
2194 file, linenum, args[0]);
2195 err_code |= ERR_ALERT | ERR_FATAL;
2196 goto out;
2197 }
2198
2199 status = atol(args[1]);
2200 msg = http_parse_errorfile(status, args[2], &errmsg);
2201 if (!msg) {
2202 ha_alert("parsing [%s:%d] : %s : %s\n", file, linenum, args[0], errmsg);
2203 err_code |= ERR_ALERT | ERR_FATAL;
2204 goto out;
2205 }
Christopher Faulet3005d282020-11-13 10:58:01 +01002206 if (errmsg) {
2207 ha_warning("parsing [%s:%d] : %s: %s\n", file, linenum, args[0], errmsg);
2208 err_code |= ERR_WARN;
2209 }
Christopher Fauletde30bb72020-05-14 10:03:55 +02002210
2211 reply = calloc(1, sizeof(*reply));
2212 if (!reply) {
2213 ha_alert("parsing [%s:%d] : %s : out of memory.\n", file, linenum, args[0]);
2214 err_code |= ERR_ALERT | ERR_FATAL;
2215 goto out;
2216 }
2217 reply->type = HTTP_REPLY_ERRMSG;
2218 reply->status = status;
2219 reply->ctype = NULL;
2220 LIST_INIT(&reply->hdrs);
2221 reply->body.errmsg = msg;
2222
Christopher Faulet35cd81d2020-01-15 11:22:56 +01002223 rc = http_get_status_idx(status);
Christopher Fauletde30bb72020-05-14 10:03:55 +02002224 curr_errs->replies[rc] = reply;
Christopher Faulet35cd81d2020-01-15 11:22:56 +01002225 }
2226 else if (*args[0] != 0) {
2227 ha_alert("parsing [%s:%d] : unknown keyword '%s' in '%s' section\n", file, linenum, args[0], cursection);
2228 err_code |= ERR_ALERT | ERR_FATAL;
2229 goto out;
2230 }
2231
2232out:
2233 free(errmsg);
2234 return err_code;
Christopher Faulet07f41f72020-01-16 16:16:06 +01002235}
2236
2237static struct cfg_kw_list cfg_kws = {ILH, {
2238 { CFG_LISTEN, "errorloc", proxy_parse_errorloc },
2239 { CFG_LISTEN, "errorloc302", proxy_parse_errorloc },
2240 { CFG_LISTEN, "errorloc303", proxy_parse_errorloc },
2241 { CFG_LISTEN, "errorfile", proxy_parse_errorfile },
Christopher Faulet76edc0f2020-01-13 15:52:01 +01002242 { CFG_LISTEN, "errorfiles", proxy_parse_errorfiles },
Christopher Faulet3b967c12020-05-15 15:47:44 +02002243 { CFG_LISTEN, "http-error", proxy_parse_http_error },
Christopher Faulet07f41f72020-01-16 16:16:06 +01002244 { 0, NULL, NULL },
2245}};
2246
2247INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws);
Christopher Faulet76edc0f2020-01-13 15:52:01 +01002248REGISTER_POST_PROXY_CHECK(proxy_check_errors);
Christopher Faulet0a589fd2020-01-22 14:47:04 +01002249REGISTER_POST_CHECK(post_check_errors);
Christopher Faulet07f41f72020-01-16 16:16:06 +01002250
Christopher Faulet35cd81d2020-01-15 11:22:56 +01002251REGISTER_CONFIG_SECTION("http-errors", cfg_parse_http_errors, NULL);
2252
Christopher Faulet29f72842019-12-11 15:52:32 +01002253/************************************************************************/
2254/* HTX sample fetches */
2255/************************************************************************/
2256
2257/* Returns 1 if a stream is an HTX stream. Otherwise, it returns 0. */
2258static int
2259smp_fetch_is_htx(const struct arg *arg_p, struct sample *smp, const char *kw, void *private)
2260{
2261 if (!smp->strm)
2262 return 0;
2263
2264 smp->data.u.sint = !!IS_HTX_STRM(smp->strm);
2265 smp->data.type = SMP_T_BOOL;
2266 return 1;
2267}
2268
2269/* Returns the number of blocks in an HTX message. The channel is chosen
2270 * depending on the sample direction. */
2271static int
2272smp_fetch_htx_nbblks(const struct arg *arg_p, struct sample *smp, const char *kw, void *private)
2273{
2274 struct channel *chn;
2275 struct htx *htx;
2276
2277 if (!smp->strm)
2278 return 0;
2279
2280 chn = ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_RES) ? &smp->strm->res : &smp->strm->req;
Christopher Faulet778f5ed2020-04-29 15:51:55 +02002281 htx = smp_prefetch_htx(smp, chn, NULL, 0);
Christopher Faulet29f72842019-12-11 15:52:32 +01002282 if (!htx)
2283 return 0;
2284
2285 smp->data.u.sint = htx_nbblks(htx);
2286 smp->data.type = SMP_T_SINT;
2287 smp->flags = SMP_F_VOLATILE | SMP_F_MAY_CHANGE;
2288 return 1;
2289}
2290
2291/* Returns the size of an HTX message. The channel is chosen depending on the
2292 * sample direction. */
2293static int
2294smp_fetch_htx_size(const struct arg *arg_p, struct sample *smp, const char *kw, void *private)
2295{
2296 struct channel *chn;
2297 struct htx *htx;
2298
2299 if (!smp->strm)
2300 return 0;
2301
2302 chn = ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_RES) ? &smp->strm->res : &smp->strm->req;
Christopher Faulet778f5ed2020-04-29 15:51:55 +02002303 htx = smp_prefetch_htx(smp, chn, NULL, 0);
Christopher Faulet29f72842019-12-11 15:52:32 +01002304 if (!htx)
2305 return 0;
2306
2307 smp->data.u.sint = htx->size;
2308 smp->data.type = SMP_T_SINT;
2309 smp->flags = SMP_F_VOLATILE | SMP_F_MAY_CHANGE;
2310 return 1;
2311}
2312
2313/* Returns the data size of an HTX message. The channel is chosen depending on the
2314 * sample direction. */
2315static int
2316smp_fetch_htx_data(const struct arg *arg_p, struct sample *smp, const char *kw, void *private)
2317{
2318 struct channel *chn;
2319 struct htx *htx;
2320
2321 if (!smp->strm)
2322 return 0;
2323
2324 chn = ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_RES) ? &smp->strm->res : &smp->strm->req;
Christopher Faulet778f5ed2020-04-29 15:51:55 +02002325 htx = smp_prefetch_htx(smp, chn, NULL, 0);
Christopher Faulet29f72842019-12-11 15:52:32 +01002326 if (!htx)
2327 return 0;
2328
2329 smp->data.u.sint = htx->data;
2330 smp->data.type = SMP_T_SINT;
2331 smp->flags = SMP_F_VOLATILE | SMP_F_MAY_CHANGE;
2332 return 1;
2333}
2334
2335/* Returns the used space (data+meta) of an HTX message. The channel is chosen
2336 * depending on the sample direction. */
2337static int
2338smp_fetch_htx_used(const struct arg *arg_p, struct sample *smp, const char *kw, void *private)
2339{
2340 struct channel *chn;
2341 struct htx *htx;
2342
2343 if (!smp->strm)
2344 return 0;
2345
2346 chn = ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_RES) ? &smp->strm->res : &smp->strm->req;
Christopher Faulet778f5ed2020-04-29 15:51:55 +02002347 htx = smp_prefetch_htx(smp, chn, NULL, 0);
Christopher Faulet29f72842019-12-11 15:52:32 +01002348 if (!htx)
2349 return 0;
2350
2351 smp->data.u.sint = htx_used_space(htx);
2352 smp->data.type = SMP_T_SINT;
2353 smp->flags = SMP_F_VOLATILE | SMP_F_MAY_CHANGE;
2354 return 1;
2355}
2356
2357/* Returns the free space (size-used) of an HTX message. The channel is chosen
2358 * depending on the sample direction. */
2359static int
2360smp_fetch_htx_free(const struct arg *arg_p, struct sample *smp, const char *kw, void *private)
2361{
2362 struct channel *chn;
2363 struct htx *htx;
2364
2365 if (!smp->strm)
2366 return 0;
2367
2368 chn = ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_RES) ? &smp->strm->res : &smp->strm->req;
Christopher Faulet778f5ed2020-04-29 15:51:55 +02002369 htx = smp_prefetch_htx(smp, chn, NULL, 0);
Christopher Faulet29f72842019-12-11 15:52:32 +01002370 if (!htx)
2371 return 0;
2372
2373 smp->data.u.sint = htx_free_space(htx);
2374 smp->data.type = SMP_T_SINT;
2375 smp->flags = SMP_F_VOLATILE | SMP_F_MAY_CHANGE;
2376 return 1;
2377}
2378
2379/* Returns the free space for data (free-sizeof(blk)) of an HTX message. The
2380 * channel is chosen depending on the sample direction. */
2381static int
2382smp_fetch_htx_free_data(const struct arg *arg_p, struct sample *smp, const char *kw, void *private)
2383{
2384 struct channel *chn;
2385 struct htx *htx;
2386
2387 if (!smp->strm)
2388 return 0;
2389
2390 chn = ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_RES) ? &smp->strm->res : &smp->strm->req;
Christopher Faulet778f5ed2020-04-29 15:51:55 +02002391 htx = smp_prefetch_htx(smp, chn, NULL, 0);
Christopher Faulet29f72842019-12-11 15:52:32 +01002392 if (!htx)
2393 return 0;
2394
2395 smp->data.u.sint = htx_free_data_space(htx);
2396 smp->data.type = SMP_T_SINT;
2397 smp->flags = SMP_F_VOLATILE | SMP_F_MAY_CHANGE;
2398 return 1;
2399}
2400
2401/* Returns 1 if the HTX message contains an EOM block. Otherwise it returns
2402 * 0. Concretely, it only checks the tail. The channel is chosen depending on
2403 * the sample direction. */
2404static int
2405smp_fetch_htx_has_eom(const struct arg *arg_p, struct sample *smp, const char *kw, void *private)
2406{
2407 struct channel *chn;
2408 struct htx *htx;
2409
2410 if (!smp->strm)
2411 return 0;
2412
2413 chn = ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_RES) ? &smp->strm->res : &smp->strm->req;
Christopher Faulet778f5ed2020-04-29 15:51:55 +02002414 htx = smp_prefetch_htx(smp, chn, NULL, 0);
Christopher Faulet29f72842019-12-11 15:52:32 +01002415 if (!htx)
2416 return 0;
2417
2418 smp->data.u.sint = (htx_get_tail_type(htx) == HTX_BLK_EOM);
2419 smp->data.type = SMP_T_BOOL;
2420 smp->flags = SMP_F_VOLATILE | SMP_F_MAY_CHANGE;
2421 return 1;
2422}
2423
2424/* Returns the type of a specific HTX block, if found in the message. Otherwise
2425 * HTX_BLK_UNUSED is returned. Any positive integer (>= 0) is supported or
2426 * "head", "tail" or "first". The channel is chosen depending on the sample
2427 * direction. */
2428static int
2429smp_fetch_htx_blk_type(const struct arg *arg_p, struct sample *smp, const char *kw, void *private)
2430{
2431 struct channel *chn;
2432 struct htx *htx;
2433 enum htx_blk_type type;
2434 int32_t pos;
2435
2436 if (!smp->strm || !arg_p)
2437 return 0;
2438
2439 chn = ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_RES) ? &smp->strm->res : &smp->strm->req;
Christopher Faulet778f5ed2020-04-29 15:51:55 +02002440 htx = smp_prefetch_htx(smp, chn, NULL, 0);
Christopher Faulet29f72842019-12-11 15:52:32 +01002441 if (!htx)
2442 return 0;
2443
2444 pos = arg_p[0].data.sint;
2445 if (pos == -1)
2446 type = htx_get_head_type(htx);
2447 else if (pos == -2)
2448 type = htx_get_tail_type(htx);
2449 else if (pos == -3)
2450 type = htx_get_first_type(htx);
2451 else
2452 type = ((pos >= htx->head && pos <= htx->tail)
2453 ? htx_get_blk_type(htx_get_blk(htx, pos))
2454 : HTX_BLK_UNUSED);
2455
2456 chunk_initstr(&smp->data.u.str, htx_blk_type_str(type));
2457 smp->data.type = SMP_T_STR;
2458 smp->flags = SMP_F_CONST | SMP_F_VOLATILE | SMP_F_MAY_CHANGE;
2459 return 1;
2460}
2461
2462/* Returns the size of a specific HTX block, if found in the message. Otherwise
2463 * 0 is returned. Any positive integer (>= 0) is supported or "head", "tail" or
2464 * "first". The channel is chosen depending on the sample direction. */
2465static int
2466smp_fetch_htx_blk_size(const struct arg *arg_p, struct sample *smp, const char *kw, void *private)
2467{
2468 struct channel *chn;
2469 struct htx *htx;
2470 struct htx_blk *blk;
2471 int32_t pos;
2472
2473 if (!smp->strm || !arg_p)
2474 return 0;
2475
2476 chn = ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_RES) ? &smp->strm->res : &smp->strm->req;
Christopher Faulet778f5ed2020-04-29 15:51:55 +02002477 htx = smp_prefetch_htx(smp, chn, NULL, 0);
Christopher Faulet29f72842019-12-11 15:52:32 +01002478 if (!htx)
2479 return 0;
2480
2481 pos = arg_p[0].data.sint;
2482 if (pos == -1)
2483 blk = htx_get_head_blk(htx);
2484 else if (pos == -2)
2485 blk = htx_get_tail_blk(htx);
2486 else if (pos == -3)
2487 blk = htx_get_first_blk(htx);
2488 else
2489 blk = ((pos >= htx->head && pos <= htx->tail) ? htx_get_blk(htx, pos) : NULL);
2490
2491 smp->data.u.sint = (blk ? htx_get_blksz(blk) : 0);
2492 smp->data.type = SMP_T_SINT;
2493 smp->flags = SMP_F_VOLATILE | SMP_F_MAY_CHANGE;
2494 return 1;
2495}
2496
2497/* Returns the start-line if the selected HTX block exists and is a
2498 * start-line. Otherwise 0 an empty string. Any positive integer (>= 0) is
2499 * supported or "head", "tail" or "first". The channel is chosen depending on
2500 * the sample direction. */
2501static int
2502smp_fetch_htx_blk_stline(const struct arg *arg_p, struct sample *smp, const char *kw, void *private)
2503{
2504 struct buffer *temp;
2505 struct channel *chn;
2506 struct htx *htx;
2507 struct htx_blk *blk;
2508 struct htx_sl *sl;
2509 int32_t pos;
2510
2511 if (!smp->strm || !arg_p)
2512 return 0;
2513
2514 chn = ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_RES) ? &smp->strm->res : &smp->strm->req;
Christopher Faulet778f5ed2020-04-29 15:51:55 +02002515 htx = smp_prefetch_htx(smp, chn, NULL, 0);
Christopher Faulet29f72842019-12-11 15:52:32 +01002516 if (!htx)
2517 return 0;
2518
2519 pos = arg_p[0].data.sint;
2520 if (pos == -1)
2521 blk = htx_get_head_blk(htx);
2522 else if (pos == -2)
2523 blk = htx_get_tail_blk(htx);
2524 else if (pos == -3)
2525 blk = htx_get_first_blk(htx);
2526 else
2527 blk = ((pos >= htx->head && pos <= htx->tail) ? htx_get_blk(htx, pos) : NULL);
2528
2529 if (!blk || (htx_get_blk_type(blk) != HTX_BLK_REQ_SL && htx_get_blk_type(blk) != HTX_BLK_RES_SL)) {
2530 smp->data.u.str.size = 0;
2531 smp->data.u.str.area = "";
2532 smp->data.u.str.data = 0;
2533 }
2534 else {
2535 sl = htx_get_blk_ptr(htx, blk);
2536
2537 temp = get_trash_chunk();
2538 chunk_istcat(temp, htx_sl_p1(sl));
2539 temp->area[temp->data++] = ' ';
2540 chunk_istcat(temp, htx_sl_p2(sl));
2541 temp->area[temp->data++] = ' ';
2542 chunk_istcat(temp, htx_sl_p3(sl));
2543
2544 smp->data.u.str = *temp;
2545 }
2546
2547 smp->data.type = SMP_T_STR;
2548 smp->flags = SMP_F_VOLATILE | SMP_F_MAY_CHANGE;
2549 return 1;
2550}
2551
2552/* Returns the header name if the selected HTX block exists and is a header or a
2553 * trailer. Otherwise 0 an empty string. Any positive integer (>= 0) is
2554 * supported or "head", "tail" or "first". The channel is chosen depending on
2555 * the sample direction. */
2556static int
2557smp_fetch_htx_blk_hdrname(const struct arg *arg_p, struct sample *smp, const char *kw, void *private)
2558{
2559 struct channel *chn;
2560 struct htx *htx;
2561 struct htx_blk *blk;
2562 int32_t pos;
2563
2564 if (!smp->strm || !arg_p)
2565 return 0;
2566
2567 chn = ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_RES) ? &smp->strm->res : &smp->strm->req;
Christopher Faulet778f5ed2020-04-29 15:51:55 +02002568 htx = smp_prefetch_htx(smp, chn, NULL, 0);
Christopher Faulet29f72842019-12-11 15:52:32 +01002569 if (!htx)
2570 return 0;
2571
2572 pos = arg_p[0].data.sint;
2573 if (pos == -1)
2574 blk = htx_get_head_blk(htx);
2575 else if (pos == -2)
2576 blk = htx_get_tail_blk(htx);
2577 else if (pos == -3)
2578 blk = htx_get_first_blk(htx);
2579 else
2580 blk = ((pos >= htx->head && pos <= htx->tail) ? htx_get_blk(htx, pos) : NULL);
2581
2582 if (!blk || (htx_get_blk_type(blk) != HTX_BLK_HDR && htx_get_blk_type(blk) != HTX_BLK_TLR)) {
2583 smp->data.u.str.size = 0;
2584 smp->data.u.str.area = "";
2585 smp->data.u.str.data = 0;
2586 }
2587 else {
2588 struct ist name = htx_get_blk_name(htx, blk);
2589
2590 chunk_initlen(&smp->data.u.str, name.ptr, name.len, name.len);
2591 }
2592 smp->data.type = SMP_T_STR;
2593 smp->flags = SMP_F_CONST | SMP_F_VOLATILE | SMP_F_MAY_CHANGE;
2594 return 1;
2595}
2596
2597/* Returns the header value if the selected HTX block exists and is a header or
2598 * a trailer. Otherwise 0 an empty string. Any positive integer (>= 0) is
2599 * supported or "head", "tail" or "first". The channel is chosen depending on
2600 * the sample direction. */
2601static int
2602smp_fetch_htx_blk_hdrval(const struct arg *arg_p, struct sample *smp, const char *kw, void *private)
2603{
2604 struct channel *chn;
2605 struct htx *htx;
2606 struct htx_blk *blk;
2607 int32_t pos;
2608
2609 if (!smp->strm || !arg_p)
2610 return 0;
2611
2612 chn = ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_RES) ? &smp->strm->res : &smp->strm->req;
Christopher Faulet778f5ed2020-04-29 15:51:55 +02002613 htx = smp_prefetch_htx(smp, chn, NULL, 0);
Christopher Faulet29f72842019-12-11 15:52:32 +01002614 if (!htx)
2615 return 0;
2616
2617 pos = arg_p[0].data.sint;
2618 if (pos == -1)
2619 blk = htx_get_head_blk(htx);
2620 else if (pos == -2)
2621 blk = htx_get_tail_blk(htx);
2622 else if (pos == -3)
2623 blk = htx_get_first_blk(htx);
2624 else
2625 blk = ((pos >= htx->head && pos <= htx->tail) ? htx_get_blk(htx, pos) : NULL);
2626
2627 if (!blk || (htx_get_blk_type(blk) != HTX_BLK_HDR && htx_get_blk_type(blk) != HTX_BLK_TLR)) {
2628 smp->data.u.str.size = 0;
2629 smp->data.u.str.area = "";
2630 smp->data.u.str.data = 0;
2631 }
2632 else {
2633 struct ist val = htx_get_blk_value(htx, blk);
2634
2635 chunk_initlen(&smp->data.u.str, val.ptr, val.len, val.len);
2636 }
2637 smp->data.type = SMP_T_STR;
2638 smp->flags = SMP_F_CONST | SMP_F_VOLATILE | SMP_F_MAY_CHANGE;
2639 return 1;
2640}
2641
2642/* Returns the value if the selected HTX block exists and is a data
2643 * block. Otherwise 0 an empty string. Any positive integer (>= 0) is supported
2644 * or "head", "tail" or "first". The channel is chosen depending on the sample
2645 * direction. */
2646static int
Christopher Fauletc5db14c2020-01-08 14:51:03 +01002647smp_fetch_htx_blk_data(const struct arg *arg_p, struct sample *smp, const char *kw, void *private)
Christopher Faulet29f72842019-12-11 15:52:32 +01002648{
2649 struct channel *chn;
2650 struct htx *htx;
2651 struct htx_blk *blk;
2652 int32_t pos;
2653
2654 if (!smp->strm || !arg_p)
2655 return 0;
2656
2657 chn = ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_RES) ? &smp->strm->res : &smp->strm->req;
Christopher Faulet778f5ed2020-04-29 15:51:55 +02002658 htx = smp_prefetch_htx(smp, chn, NULL, 0);
Christopher Faulet29f72842019-12-11 15:52:32 +01002659 if (!htx)
2660 return 0;
2661
2662 pos = arg_p[0].data.sint;
2663 if (pos == -1)
2664 blk = htx_get_head_blk(htx);
2665 else if (pos == -2)
2666 blk = htx_get_tail_blk(htx);
2667 else if (pos == -3)
2668 blk = htx_get_first_blk(htx);
2669 else
2670 blk = ((pos >= htx->head && pos <= htx->tail) ? htx_get_blk(htx, pos) : NULL);
2671
2672 if (!blk || htx_get_blk_type(blk) != HTX_BLK_DATA) {
2673 smp->data.u.str.size = 0;
2674 smp->data.u.str.area = "";
2675 smp->data.u.str.data = 0;
2676 }
2677 else {
2678 struct ist val = htx_get_blk_value(htx, blk);
2679
2680 chunk_initlen(&smp->data.u.str, val.ptr, val.len, val.len);
2681 }
Christopher Faulet8178e402020-01-08 14:38:58 +01002682 smp->data.type = SMP_T_BIN;
Christopher Faulet29f72842019-12-11 15:52:32 +01002683 smp->flags = SMP_F_CONST | SMP_F_VOLATILE | SMP_F_MAY_CHANGE;
2684 return 1;
2685}
2686
2687/* This function is used to validate the arguments passed to any "htx_blk" fetch
2688 * keywords. An argument is expected by these keywords. It must be a positive
2689 * integer or on of the following strings: "head", "tail" or "first". It returns
2690 * 0 on error, and a non-zero value if OK.
2691 */
2692int val_blk_arg(struct arg *arg, char **err_msg)
2693{
2694 if (arg[0].type != ARGT_STR || !arg[0].data.str.data) {
2695 memprintf(err_msg, "a block position is expected (> 0) or a special block name (head, tail, first)");
2696 return 0;
2697 }
2698 if (arg[0].data.str.data == 4 && !strncmp(arg[0].data.str.area, "head", 4)) {
Christopher Faulet6ad7df42020-08-07 11:45:18 +02002699 chunk_destroy(&arg[0].data.str);
Christopher Faulet29f72842019-12-11 15:52:32 +01002700 arg[0].type = ARGT_SINT;
2701 arg[0].data.sint = -1;
2702 }
2703 else if (arg[0].data.str.data == 4 && !strncmp(arg[0].data.str.area, "tail", 4)) {
Christopher Faulet6ad7df42020-08-07 11:45:18 +02002704 chunk_destroy(&arg[0].data.str);
Christopher Faulet29f72842019-12-11 15:52:32 +01002705 arg[0].type = ARGT_SINT;
2706 arg[0].data.sint = -2;
2707 }
2708 else if (arg[0].data.str.data == 5 && !strncmp(arg[0].data.str.area, "first", 5)) {
Christopher Faulet6ad7df42020-08-07 11:45:18 +02002709 chunk_destroy(&arg[0].data.str);
Christopher Faulet29f72842019-12-11 15:52:32 +01002710 arg[0].type = ARGT_SINT;
2711 arg[0].data.sint = -3;
2712 }
2713 else {
2714 int pos;
2715
2716 for (pos = 0; pos < arg[0].data.str.data; pos++) {
Willy Tarreau90807112020-02-25 08:16:33 +01002717 if (!isdigit((unsigned char)arg[0].data.str.area[pos])) {
Christopher Faulet29f72842019-12-11 15:52:32 +01002718 memprintf(err_msg, "invalid block position");
2719 return 0;
2720 }
2721 }
2722
2723 pos = strl2uic(arg[0].data.str.area, arg[0].data.str.data);
2724 if (pos < 0) {
2725 memprintf(err_msg, "block position must not be negative");
2726 return 0;
2727 }
Christopher Faulet6ad7df42020-08-07 11:45:18 +02002728 chunk_destroy(&arg[0].data.str);
Christopher Faulet29f72842019-12-11 15:52:32 +01002729 arg[0].type = ARGT_SINT;
2730 arg[0].data.sint = pos;
2731 }
2732
2733 return 1;
2734}
2735
2736
2737/* Note: must not be declared <const> as its list will be overwritten.
Ilya Shipitsind4259502020-04-08 01:07:56 +05002738 * Note: htx sample fetches should only used for development purpose.
Christopher Faulet29f72842019-12-11 15:52:32 +01002739 */
2740static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Christopher Faulet01f44452020-01-08 14:23:40 +01002741 { "internal.strm.is_htx", smp_fetch_is_htx, 0, NULL, SMP_T_BOOL, SMP_USE_L6REQ },
Christopher Faulet29f72842019-12-11 15:52:32 +01002742
Christopher Faulet01f44452020-01-08 14:23:40 +01002743 { "internal.htx.nbblks", smp_fetch_htx_nbblks, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV|SMP_USE_HRSHV},
2744 { "internal.htx.size", smp_fetch_htx_size, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV|SMP_USE_HRSHV},
2745 { "internal.htx.data", smp_fetch_htx_data, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV|SMP_USE_HRSHV},
2746 { "internal.htx.used", smp_fetch_htx_used, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV|SMP_USE_HRSHV},
2747 { "internal.htx.free", smp_fetch_htx_free, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV|SMP_USE_HRSHV},
2748 { "internal.htx.free_data", smp_fetch_htx_free_data, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV|SMP_USE_HRSHV},
2749 { "internal.htx.has_eom", smp_fetch_htx_has_eom, 0, NULL, SMP_T_BOOL, SMP_USE_HRQHV|SMP_USE_HRSHV},
Christopher Faulet29f72842019-12-11 15:52:32 +01002750
Christopher Faulet01f44452020-01-08 14:23:40 +01002751 { "internal.htx_blk.type", smp_fetch_htx_blk_type, ARG1(1,STR), val_blk_arg, SMP_T_STR, SMP_USE_HRQHV|SMP_USE_HRSHV},
2752 { "internal.htx_blk.size", smp_fetch_htx_blk_size, ARG1(1,STR), val_blk_arg, SMP_T_SINT, SMP_USE_HRQHV|SMP_USE_HRSHV},
2753 { "internal.htx_blk.start_line", smp_fetch_htx_blk_stline, ARG1(1,STR), val_blk_arg, SMP_T_STR, SMP_USE_HRQHV|SMP_USE_HRSHV},
2754 { "internal.htx_blk.hdrname", smp_fetch_htx_blk_hdrname, ARG1(1,STR), val_blk_arg, SMP_T_STR, SMP_USE_HRQHV|SMP_USE_HRSHV},
2755 { "internal.htx_blk.hdrval", smp_fetch_htx_blk_hdrval, ARG1(1,STR), val_blk_arg, SMP_T_STR, SMP_USE_HRQHV|SMP_USE_HRSHV},
Christopher Fauletc5db14c2020-01-08 14:51:03 +01002756 { "internal.htx_blk.data", smp_fetch_htx_blk_data, ARG1(1,STR), val_blk_arg, SMP_T_BIN, SMP_USE_HRQHV|SMP_USE_HRSHV},
Christopher Faulet29f72842019-12-11 15:52:32 +01002757
2758 { /* END */ },
2759}};
2760
2761INITCALL1(STG_REGISTER, sample_register_fetches, &sample_fetch_keywords);