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git01.mediatek.com / haproxy / 7f85433a912529c5cda1629001b34fd2b2e54758 / . / src / acl.c
blob: 014269e74c75133b3851db8c7cf35b7aab756ed1 [file] [log] [blame]
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1/*
2 * ACL management functions.
3 *
Willy Tarreaud4c33c82013-01-07 21:59:07 +0100[diff] [blame]4 * Copyright 2000-2013 Willy Tarreau <w@1wt.eu>
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]13#include <ctype.h>
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]14#include <stdio.h>
15#include <string.h>
16
Willy Tarreaub2551052020-06-09 09:07:15 +0200[diff] [blame]17#include <import/ebsttree.h>
18
Willy Tarreaudcc048a2020-06-04 19:11:43 +0200[diff] [blame]19#include <haproxy/acl.h>
Willy Tarreau4c7e4b72020-05-27 12:58:42 +0200[diff] [blame]20#include <haproxy/api.h>
Willy Tarreaub2551052020-06-09 09:07:15 +0200[diff] [blame]21#include <haproxy/arg.h>
22#include <haproxy/auth.h>
Willy Tarreau36979d92020-06-05 17:27:29 +0200[diff] [blame]23#include <haproxy/errors.h>
Willy Tarreaub2551052020-06-09 09:07:15 +0200[diff] [blame]24#include <haproxy/global.h>
Willy Tarreau853b2972020-05-27 18:01:47 +0200[diff] [blame]25#include <haproxy/list.h>
Willy Tarreau225a90a2020-06-04 15:06:28 +0200[diff] [blame]26#include <haproxy/pattern.h>
Willy Tarreaua264d962020-06-04 22:29:18 +0200[diff] [blame]27#include <haproxy/proxy-t.h>
Willy Tarreaue6ce10b2020-06-04 15:33:47 +0200[diff] [blame]28#include <haproxy/sample.h>
Willy Tarreau872f2ea2020-06-04 18:46:44 +0200[diff] [blame]29#include <haproxy/stick_table.h>
Willy Tarreaub2551052020-06-09 09:07:15 +0200[diff] [blame]30#include <haproxy/tools.h>
Willy Tarreauc4262962010-05-10 23:42:40 +0200[diff] [blame]31
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]32/* List head of all known ACL keywords */
33static struct acl_kw_list acl_keywords = {
34 .list = LIST_HEAD_INIT(acl_keywords.list)
35};
36
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]37/* input values are 0 or 3, output is the same */
Thierry FOURNIER1794fdf2014-01-17 15:25:13 +0100[diff] [blame]38static inline enum acl_test_res pat2acl(struct pattern *pat)
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]39{
Thierry FOURNIER1794fdf2014-01-17 15:25:13 +0100[diff] [blame]40 if (pat)
41 return ACL_TEST_PASS;
42 else
43 return ACL_TEST_FAIL;
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]44}
45
Willy Tarreaua5909832007-06-17 20:40:25 +0200[diff] [blame]46/*
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]47 * Registers the ACL keyword list <kwl> as a list of valid keywords for next
48 * parsing sessions.
49 */
50void acl_register_keywords(struct acl_kw_list *kwl)
51{
52 LIST_ADDQ(&acl_keywords.list, &kwl->list);
53}
54
55/*
56 * Unregisters the ACL keyword list <kwl> from the list of valid keywords.
57 */
58void acl_unregister_keywords(struct acl_kw_list *kwl)
59{
60 LIST_DEL(&kwl->list);
61 LIST_INIT(&kwl->list);
62}
63
64/* Return a pointer to the ACL <name> within the list starting at <head>, or
65 * NULL if not found.
66 */
67struct acl *find_acl_by_name(const char *name, struct list *head)
68{
69 struct acl *acl;
70 list_for_each_entry(acl, head, list) {
71 if (strcmp(acl->name, name) == 0)
72 return acl;
73 }
74 return NULL;
75}
76
77/* Return a pointer to the ACL keyword <kw>, or NULL if not found. Note that if
Willy Tarreau4bfa4222013-12-16 22:01:06 +0100[diff] [blame]78 * <kw> contains an opening parenthesis or a comma, only the left part of it is
79 * checked.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]80 */
81struct acl_keyword *find_acl_kw(const char *kw)
82{
83 int index;
84 const char *kwend;
85 struct acl_kw_list *kwl;
86
Willy Tarreau4bfa4222013-12-16 22:01:06 +0100[diff] [blame]87 kwend = kw;
Willy Tarreaued2c6622020-02-14 18:27:10 +0100[diff] [blame]88 while (is_idchar(*kwend))
Willy Tarreau4bfa4222013-12-16 22:01:06 +0100[diff] [blame]89 kwend++;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]90
91 list_for_each_entry(kwl, &acl_keywords.list, list) {
92 for (index = 0; kwl->kw[index].kw != NULL; index++) {
93 if ((strncmp(kwl->kw[index].kw, kw, kwend - kw) == 0) &&
94 kwl->kw[index].kw[kwend-kw] == 0)
95 return &kwl->kw[index];
96 }
97 }
98 return NULL;
99}
100
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]101static struct acl_expr *prune_acl_expr(struct acl_expr *expr)
102{
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]103 struct arg *arg;
Willy Tarreau145325e2017-04-12 23:03:31 +0200[diff] [blame]104 int unresolved = 0;
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]105
Thierry FOURNIER6f7203d2014-01-14 16:24:51 +0100[diff] [blame]106 pattern_prune(&expr->pat);
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]107
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]108 for (arg = expr->smp->arg_p; arg; arg++) {
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]109 if (arg->type == ARGT_STOP)
110 break;
Willy Tarreau496aa012012-06-01 10:38:29 +0200[diff] [blame]111 if (arg->type == ARGT_STR || arg->unresolved) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200[diff] [blame]112 free(arg->data.str.area);
113 arg->data.str.area = NULL;
114 arg->data.str.data = 0;
Willy Tarreau145325e2017-04-12 23:03:31 +0200[diff] [blame]115 unresolved |= arg->unresolved;
Willy Tarreau496aa012012-06-01 10:38:29 +0200[diff] [blame]116 arg->unresolved = 0;
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]117 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]118 }
119
Tim Duesterhus9fa0df52020-07-04 11:49:38 +0200[diff] [blame]120 release_sample_expr(expr->smp);
121
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]122 return expr;
123}
124
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]125/* Parse an ACL expression starting at <args>[0], and return it. If <err> is
126 * not NULL, it will be filled with a pointer to an error message in case of
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]127 * error. This pointer must be freeable or NULL. <al> is an arg_list serving
128 * as a list head to report missing dependencies.
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]129 *
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]130 * Right now, the only accepted syntax is :
131 * <subject> [<value>...]
132 */
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]133struct acl_expr *parse_acl_expr(const char **args, char **err, struct arg_list *al,
134 const char *file, int line)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]135{
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]136 __label__ out_return, out_free_expr;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]137 struct acl_expr *expr;
138 struct acl_keyword *aclkw;
Christopher Faulet54ceb042017-06-14 14:41:33 +0200[diff] [blame]139 int refflags, patflags;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]140 const char *arg;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]141 struct sample_expr *smp = NULL;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]142 int idx = 0;
143 char *ckw = NULL;
144 const char *begw;
145 const char *endw;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]146 const char *endt;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]147 int cur_type;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]148 int nbargs;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]149 int operator = STD_OP_EQ;
150 int op;
151 int contain_colon, have_dot;
152 const char *dot;
153 signed long long value, minor;
154 /* The following buffer contain two numbers, a ':' separator and the final \0. */
155 char buffer[NB_LLMAX_STR + 1 + NB_LLMAX_STR + 1];
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]156 int is_loaded;
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]157 int unique_id;
158 char *error;
159 struct pat_ref *ref;
160 struct pattern_expr *pattern_expr;
Thierry FOURNIER9860c412014-01-29 14:23:29 +0100[diff] [blame]161 int load_as_map = 0;
Willy Tarreau6f0ddca2014-08-29 17:36:40 +0200[diff] [blame]162 int acl_conv_found = 0;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]163
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]164 /* First, we look for an ACL keyword. And if we don't find one, then
165 * we look for a sample fetch expression starting with a sample fetch
166 * keyword.
Willy Tarreaubef91e72013-03-31 23:14:46 +0200[diff] [blame]167 */
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]168
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]169 al->ctx = ARGC_ACL; // to report errors while resolving args late
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]170 al->kw = *args;
171 al->conv = NULL;
172
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]173 aclkw = find_acl_kw(args[0]);
Willy Tarreau20490922014-03-17 18:04:27 +0100[diff] [blame]174 if (aclkw) {
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]175 /* OK we have a real ACL keyword */
Willy Tarreau9987ea92013-06-11 21:09:06 +0200[diff] [blame]176
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]177 /* build new sample expression for this ACL */
Vincent Bernat02779b62016-04-03 13:48:43 +0200[diff] [blame]178 smp = calloc(1, sizeof(*smp));
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]179 if (!smp) {
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]180 memprintf(err, "out of memory when parsing ACL expression");
181 goto out_return;
182 }
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]183 LIST_INIT(&(smp->conv_exprs));
184 smp->fetch = aclkw->smp;
185 smp->arg_p = empty_arg_list;
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]186
Joseph Herlant68082792018-11-15 14:55:09 -0800[diff] [blame]187 /* look for the beginning of the subject arguments */
Willy Tarreaued2c6622020-02-14 18:27:10 +0100[diff] [blame]188 for (arg = args[0]; is_idchar(*arg); arg++)
189 ;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]190
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]191 /* At this point, we have :
192 * - args[0] : beginning of the keyword
193 * - arg : end of the keyword, first character not part of keyword
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]194 */
Willy Tarreau80b53ff2020-02-14 08:40:37 +0100[diff] [blame]195 nbargs = make_arg_list(arg, -1, smp->fetch->arg_mask, &smp->arg_p,
196 err, &endt, NULL, al);
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]197 if (nbargs < 0) {
198 /* note that make_arg_list will have set <err> here */
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]199 memprintf(err, "ACL keyword '%s' : %s", aclkw->kw, *err);
200 goto out_free_smp;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]201 }
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]202
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]203 if (!smp->arg_p) {
204 smp->arg_p = empty_arg_list;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]205 }
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]206 else if (smp->fetch->val_args && !smp->fetch->val_args(smp->arg_p, err)) {
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]207 /* invalid keyword argument, error must have been
208 * set by val_args().
209 */
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]210 memprintf(err, "in argument to '%s', %s", aclkw->kw, *err);
211 goto out_free_smp;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]212 }
213 arg = endt;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]214
Joseph Herlant68082792018-11-15 14:55:09 -0800[diff] [blame]215 /* look for the beginning of the converters list. Those directly attached
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]216 * to the ACL keyword are found just after <arg> which points to the comma.
Willy Tarreau6f0ddca2014-08-29 17:36:40 +0200[diff] [blame]217 * If we find any converter, then we don't use the ACL keyword's match
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]218 * anymore but the one related to the converter's output type.
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]219 */
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]220 cur_type = smp->fetch->out_type;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]221 while (*arg) {
222 struct sample_conv *conv;
223 struct sample_conv_expr *conv_expr;
Willy Tarreau80b53ff2020-02-14 08:40:37 +0100[diff] [blame]224 int err_arg;
225 int argcnt;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]226
227 if (*arg && *arg != ',') {
228 if (ckw)
Willy Tarreau97108e02016-11-25 07:33:24 +0100[diff] [blame]229 memprintf(err, "ACL keyword '%s' : missing comma after converter '%s'.",
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]230 aclkw->kw, ckw);
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]231 else
232 memprintf(err, "ACL keyword '%s' : missing comma after fetch keyword.",
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]233 aclkw->kw);
234 goto out_free_smp;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]235 }
Willy Tarreauae52f062012-04-26 12:13:35 +0200[diff] [blame]236
Willy Tarreau80b53ff2020-02-14 08:40:37 +0100[diff] [blame]237 /* FIXME: how long should we support such idiocies ? Maybe we
238 * should already warn ?
239 */
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]240 while (*arg == ',') /* then trailing commas */
241 arg++;
Willy Tarreau2e845be2012-10-19 19:49:09 +0200[diff] [blame]242
Willy Tarreau97108e02016-11-25 07:33:24 +0100[diff] [blame]243 begw = arg; /* start of converter keyword */
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]244
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]245 if (!*begw)
246 /* none ? end of converters */
247 break;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]248
Willy Tarreaued2c6622020-02-14 18:27:10 +0100[diff] [blame]249 for (endw = begw; is_idchar(*endw); endw++)
250 ;
Willy Tarreau9ca69362013-10-22 19:10:06 +0200[diff] [blame]251
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]252 free(ckw);
253 ckw = my_strndup(begw, endw - begw);
Willy Tarreauf75d0082013-04-07 21:20:44 +0200[diff] [blame]254
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]255 conv = find_sample_conv(begw, endw - begw);
256 if (!conv) {
257 /* Unknown converter method */
Willy Tarreau97108e02016-11-25 07:33:24 +0100[diff] [blame]258 memprintf(err, "ACL keyword '%s' : unknown converter '%s'.",
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]259 aclkw->kw, ckw);
260 goto out_free_smp;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]261 }
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]262
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]263 arg = endw;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]264
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]265 if (conv->in_type >= SMP_TYPES || conv->out_type >= SMP_TYPES) {
Willy Tarreau97108e02016-11-25 07:33:24 +0100[diff] [blame]266 memprintf(err, "ACL keyword '%s' : returns type of converter '%s' is unknown.",
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]267 aclkw->kw, ckw);
268 goto out_free_smp;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]269 }
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]270
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]271 /* If impossible type conversion */
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]272 if (!sample_casts[cur_type][conv->in_type]) {
Willy Tarreau97108e02016-11-25 07:33:24 +0100[diff] [blame]273 memprintf(err, "ACL keyword '%s' : converter '%s' cannot be applied.",
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]274 aclkw->kw, ckw);
275 goto out_free_smp;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]276 }
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]277
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]278 cur_type = conv->out_type;
Vincent Bernat02779b62016-04-03 13:48:43 +0200[diff] [blame]279 conv_expr = calloc(1, sizeof(*conv_expr));
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]280 if (!conv_expr)
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]281 goto out_free_smp;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]282
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]283 LIST_ADDQ(&(smp->conv_exprs), &(conv_expr->list));
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]284 conv_expr->conv = conv;
Willy Tarreau6f0ddca2014-08-29 17:36:40 +0200[diff] [blame]285 acl_conv_found = 1;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]286
Willy Tarreau80b53ff2020-02-14 08:40:37 +0100[diff] [blame]287 al->kw = smp->fetch->kw;
288 al->conv = conv_expr->conv->kw;
289 argcnt = make_arg_list(endw, -1, conv->arg_mask, &conv_expr->arg_p, err, &arg, &err_arg, al);
290 if (argcnt < 0) {
291 memprintf(err, "ACL keyword '%s' : invalid arg %d in converter '%s' : %s.",
292 aclkw->kw, err_arg+1, ckw, *err);
293 goto out_free_smp;
294 }
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]295
Willy Tarreau80b53ff2020-02-14 08:40:37 +0100[diff] [blame]296 if (argcnt && !conv->arg_mask) {
297 memprintf(err, "converter '%s' does not support any args", ckw);
298 goto out_free_smp;
299 }
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]300
Willy Tarreau80b53ff2020-02-14 08:40:37 +0100[diff] [blame]301 if (!conv_expr->arg_p)
302 conv_expr->arg_p = empty_arg_list;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]303
Willy Tarreau80b53ff2020-02-14 08:40:37 +0100[diff] [blame]304 if (conv->val_args && !conv->val_args(conv_expr->arg_p, conv, file, line, err)) {
305 memprintf(err, "ACL keyword '%s' : invalid args in converter '%s' : %s.",
306 aclkw->kw, ckw, *err);
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]307 goto out_free_smp;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]308 }
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]309 }
Christopher Faulet361935a2019-09-13 09:50:15 +0200[diff] [blame]310 free(ckw);
311 ckw = NULL;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]312 }
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]313 else {
314 /* This is not an ACL keyword, so we hope this is a sample fetch
315 * keyword that we're going to transparently use as an ACL. If
316 * so, we retrieve a completely parsed expression with args and
317 * convs already done.
318 */
Willy Tarreaue3b57bf2020-02-14 16:50:14 +0100[diff] [blame]319 smp = sample_parse_expr((char **)args, &idx, file, line, err, al, NULL);
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]320 if (!smp) {
321 memprintf(err, "%s in ACL expression '%s'", *err, *args);
322 goto out_return;
323 }
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]324 cur_type = smp_expr_output_type(smp);
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]325 }
326
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]327 expr = calloc(1, sizeof(*expr));
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]328 if (!expr) {
329 memprintf(err, "out of memory when parsing ACL expression");
Christopher Faulet361935a2019-09-13 09:50:15 +0200[diff] [blame]330 goto out_free_smp;
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]331 }
332
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]333 pattern_init_head(&expr->pat);
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]334
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]335 expr->pat.expect_type = cur_type;
336 expr->smp = smp;
337 expr->kw = smp->fetch->kw;
338 smp = NULL; /* don't free it anymore */
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]339
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]340 if (aclkw && !acl_conv_found) {
341 expr->kw = aclkw->kw;
342 expr->pat.parse = aclkw->parse ? aclkw->parse : pat_parse_fcts[aclkw->match_type];
343 expr->pat.index = aclkw->index ? aclkw->index : pat_index_fcts[aclkw->match_type];
344 expr->pat.match = aclkw->match ? aclkw->match : pat_match_fcts[aclkw->match_type];
345 expr->pat.delete = aclkw->delete ? aclkw->delete : pat_delete_fcts[aclkw->match_type];
346 expr->pat.prune = aclkw->prune ? aclkw->prune : pat_prune_fcts[aclkw->match_type];
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]347 }
348
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]349 if (!expr->pat.parse) {
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]350 /* Parse/index/match functions depend on the expression type,
351 * so we have to map them now. Some types can be automatically
352 * converted.
353 */
354 switch (cur_type) {
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]355 case SMP_T_BOOL:
356 expr->pat.parse = pat_parse_fcts[PAT_MATCH_BOOL];
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]357 expr->pat.index = pat_index_fcts[PAT_MATCH_BOOL];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]358 expr->pat.match = pat_match_fcts[PAT_MATCH_BOOL];
Thierry FOURNIERb1136502014-01-15 11:38:49 +0100[diff] [blame]359 expr->pat.delete = pat_delete_fcts[PAT_MATCH_BOOL];
Thierry FOURNIER6f7203d2014-01-14 16:24:51 +0100[diff] [blame]360 expr->pat.prune = pat_prune_fcts[PAT_MATCH_BOOL];
Thierry FOURNIER5d344082014-01-27 14:19:53 +0100[diff] [blame]361 expr->pat.expect_type = pat_match_types[PAT_MATCH_BOOL];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]362 break;
363 case SMP_T_SINT:
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]364 expr->pat.parse = pat_parse_fcts[PAT_MATCH_INT];
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]365 expr->pat.index = pat_index_fcts[PAT_MATCH_INT];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]366 expr->pat.match = pat_match_fcts[PAT_MATCH_INT];
Thierry FOURNIERb1136502014-01-15 11:38:49 +0100[diff] [blame]367 expr->pat.delete = pat_delete_fcts[PAT_MATCH_INT];
Thierry FOURNIER6f7203d2014-01-14 16:24:51 +0100[diff] [blame]368 expr->pat.prune = pat_prune_fcts[PAT_MATCH_INT];
Thierry FOURNIER5d344082014-01-27 14:19:53 +0100[diff] [blame]369 expr->pat.expect_type = pat_match_types[PAT_MATCH_INT];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]370 break;
Willy Tarreau78c5eec2019-04-19 11:45:20 +0200[diff] [blame]371 case SMP_T_ADDR:
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]372 case SMP_T_IPV4:
373 case SMP_T_IPV6:
374 expr->pat.parse = pat_parse_fcts[PAT_MATCH_IP];
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]375 expr->pat.index = pat_index_fcts[PAT_MATCH_IP];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]376 expr->pat.match = pat_match_fcts[PAT_MATCH_IP];
Thierry FOURNIERb1136502014-01-15 11:38:49 +0100[diff] [blame]377 expr->pat.delete = pat_delete_fcts[PAT_MATCH_IP];
Thierry FOURNIER6f7203d2014-01-14 16:24:51 +0100[diff] [blame]378 expr->pat.prune = pat_prune_fcts[PAT_MATCH_IP];
Thierry FOURNIER5d344082014-01-27 14:19:53 +0100[diff] [blame]379 expr->pat.expect_type = pat_match_types[PAT_MATCH_IP];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]380 break;
Thierry FOURNIER9fefbd52014-05-11 15:15:00 +0200[diff] [blame]381 case SMP_T_STR:
382 expr->pat.parse = pat_parse_fcts[PAT_MATCH_STR];
383 expr->pat.index = pat_index_fcts[PAT_MATCH_STR];
384 expr->pat.match = pat_match_fcts[PAT_MATCH_STR];
385 expr->pat.delete = pat_delete_fcts[PAT_MATCH_STR];
386 expr->pat.prune = pat_prune_fcts[PAT_MATCH_STR];
387 expr->pat.expect_type = pat_match_types[PAT_MATCH_STR];
388 break;
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]389 }
390 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]391
Willy Tarreau3c3dfd52013-11-04 18:09:12 +0100[diff] [blame]392 /* Additional check to protect against common mistakes */
Thierry FOURNIERd163e1c2013-11-28 11:41:23 +0100[diff] [blame]393 if (expr->pat.parse && cur_type != SMP_T_BOOL && !*args[1]) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100[diff] [blame]394 ha_warning("parsing acl keyword '%s' :\n"
395 " no pattern to match against were provided, so this ACL will never match.\n"
396 " If this is what you intended, please add '--' to get rid of this warning.\n"
397 " If you intended to match only for existence, please use '-m found'.\n"
398 " If you wanted to force an int to match as a bool, please use '-m bool'.\n"
399 "\n",
400 args[0]);
Willy Tarreau3c3dfd52013-11-04 18:09:12 +0100[diff] [blame]401 }
402
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]403 args++;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]404
405 /* check for options before patterns. Supported options are :
406 * -i : ignore case for all patterns by default
407 * -f : read patterns from those files
Willy Tarreau5adeda12013-03-31 22:13:34 +0200[diff] [blame]408 * -m : force matching method (must be used before -f)
Thierry FOURNIER9860c412014-01-29 14:23:29 +0100[diff] [blame]409 * -M : load the file as map file
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]410 * -u : force the unique id of the acl
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]411 * -- : everything after this is not an option
412 */
Christopher Faulet54ceb042017-06-14 14:41:33 +0200[diff] [blame]413 refflags = PAT_REF_ACL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]414 patflags = 0;
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]415 is_loaded = 0;
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]416 unique_id = -1;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]417 while (**args == '-') {
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]418 if (strcmp(*args, "-i") == 0)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]419 patflags |= PAT_MF_IGNORE_CASE;
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]420 else if (strcmp(*args, "-n") == 0)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]421 patflags |= PAT_MF_NO_DNS;
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]422 else if (strcmp(*args, "-u") == 0) {
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]423 unique_id = strtol(args[1], &error, 10);
424 if (*error != '\0') {
425 memprintf(err, "the argument of -u must be an integer");
426 goto out_free_expr;
427 }
428
429 /* Check if this id is really unique. */
430 if (pat_ref_lookupid(unique_id)) {
431 memprintf(err, "the id is already used");
432 goto out_free_expr;
433 }
434
435 args++;
436 }
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]437 else if (strcmp(*args, "-f") == 0) {
Thierry FOURNIERd163e1c2013-11-28 11:41:23 +0100[diff] [blame]438 if (!expr->pat.parse) {
Willy Tarreau9987ea92013-06-11 21:09:06 +0200[diff] [blame]439 memprintf(err, "matching method must be specified first (using '-m') when using a sample fetch of this type ('%s')", expr->kw);
Willy Tarreaubef91e72013-03-31 23:14:46 +0200[diff] [blame]440 goto out_free_expr;
441 }
442
Christopher Faulet54ceb042017-06-14 14:41:33 +0200[diff] [blame]443 if (!pattern_read_from_file(&expr->pat, refflags, args[1], patflags, load_as_map, err, file, line))
Willy Tarreau2b5285d2010-05-09 23:45:24 +0200[diff] [blame]444 goto out_free_expr;
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]445 is_loaded = 1;
Willy Tarreau5adeda12013-03-31 22:13:34 +0200[diff] [blame]446 args++;
447 }
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]448 else if (strcmp(*args, "-m") == 0) {
Willy Tarreau5adeda12013-03-31 22:13:34 +0200[diff] [blame]449 int idx;
450
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]451 if (is_loaded) {
Willy Tarreau5adeda12013-03-31 22:13:34 +0200[diff] [blame]452 memprintf(err, "'-m' must only be specified before patterns and files in parsing ACL expression");
453 goto out_free_expr;
454 }
455
Willy Tarreau6f8fe312013-11-28 22:24:25 +0100[diff] [blame]456 idx = pat_find_match_name(args[1]);
Willy Tarreau5adeda12013-03-31 22:13:34 +0200[diff] [blame]457 if (idx < 0) {
458 memprintf(err, "unknown matching method '%s' when parsing ACL expression", args[1]);
459 goto out_free_expr;
460 }
461
462 /* Note: -m found is always valid, bool/int are compatible, str/bin/reg/len are compatible */
Willy Tarreau9bb49f62015-09-24 16:37:12 +0200[diff] [blame]463 if (idx != PAT_MATCH_FOUND && !sample_casts[cur_type][pat_match_types[idx]]) {
Willy Tarreau93fddf12013-03-31 22:59:32 +0200[diff] [blame]464 memprintf(err, "matching method '%s' cannot be used with fetch keyword '%s'", args[1], expr->kw);
Willy Tarreau5adeda12013-03-31 22:13:34 +0200[diff] [blame]465 goto out_free_expr;
466 }
Thierry FOURNIERe3ded592013-12-06 15:36:54 +0100[diff] [blame]467 expr->pat.parse = pat_parse_fcts[idx];
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]468 expr->pat.index = pat_index_fcts[idx];
Thierry FOURNIERe3ded592013-12-06 15:36:54 +0100[diff] [blame]469 expr->pat.match = pat_match_fcts[idx];
Thierry FOURNIERb1136502014-01-15 11:38:49 +0100[diff] [blame]470 expr->pat.delete = pat_delete_fcts[idx];
Thierry FOURNIER6f7203d2014-01-14 16:24:51 +0100[diff] [blame]471 expr->pat.prune = pat_prune_fcts[idx];
Thierry FOURNIER5d344082014-01-27 14:19:53 +0100[diff] [blame]472 expr->pat.expect_type = pat_match_types[idx];
Willy Tarreau2b5285d2010-05-09 23:45:24 +0200[diff] [blame]473 args++;
474 }
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]475 else if (strcmp(*args, "-M") == 0) {
Christopher Faulet54ceb042017-06-14 14:41:33 +0200[diff] [blame]476 refflags |= PAT_REF_MAP;
Thierry FOURNIER9860c412014-01-29 14:23:29 +0100[diff] [blame]477 load_as_map = 1;
478 }
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]479 else if (strcmp(*args, "--") == 0) {
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]480 args++;
481 break;
482 }
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]483 else {
484 memprintf(err, "'%s' is not a valid ACL option. Please use '--' before any pattern beginning with a '-'", args[0]);
485 goto out_free_expr;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]486 break;
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]487 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]488 args++;
489 }
490
Thierry FOURNIERd163e1c2013-11-28 11:41:23 +0100[diff] [blame]491 if (!expr->pat.parse) {
Willy Tarreau9987ea92013-06-11 21:09:06 +0200[diff] [blame]492 memprintf(err, "matching method must be specified first (using '-m') when using a sample fetch of this type ('%s')", expr->kw);
Willy Tarreaubef91e72013-03-31 23:14:46 +0200[diff] [blame]493 goto out_free_expr;
494 }
495
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]496 /* Create displayed reference */
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200[diff] [blame]497 snprintf(trash.area, trash.size, "acl '%s' file '%s' line %d",
498 expr->kw, file, line);
499 trash.area[trash.size - 1] = '\0';
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]500
Ilya Shipitsin6fb0f212020-04-02 15:25:26 +0500[diff] [blame]501 /* Create new pattern reference. */
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200[diff] [blame]502 ref = pat_ref_newid(unique_id, trash.area, PAT_REF_ACL);
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]503 if (!ref) {
504 memprintf(err, "memory error");
505 goto out_free_expr;
506 }
507
508 /* Create new pattern expression associated to this reference. */
Emeric Brun7d27f3c2017-07-03 17:54:23 +0200[diff] [blame]509 pattern_expr = pattern_new_expr(&expr->pat, ref, patflags, err, NULL);
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]510 if (!pattern_expr)
511 goto out_free_expr;
512
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]513 /* now parse all patterns */
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]514 while (**args) {
515 arg = *args;
516
517 /* Compatibility layer. Each pattern can parse only one string per pattern,
518 * but the pat_parser_int() and pat_parse_dotted_ver() parsers were need
Ilya Shipitsin6fb0f212020-04-02 15:25:26 +0500[diff] [blame]519 * optionally two operators. The first operator is the match method: eq,
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]520 * le, lt, ge and gt. pat_parse_int() and pat_parse_dotted_ver() functions
521 * can have a compatibility syntax based on ranges:
522 *
523 * pat_parse_int():
524 *
525 * "eq x" -> "x" or "x:x"
526 * "le x" -> ":x"
527 * "lt x" -> ":y" (with y = x - 1)
528 * "ge x" -> "x:"
529 * "gt x" -> "y:" (with y = x + 1)
530 *
531 * pat_parse_dotted_ver():
532 *
533 * "eq x.y" -> "x.y" or "x.y:x.y"
534 * "le x.y" -> ":x.y"
535 * "lt x.y" -> ":w.z" (with w.z = x.y - 1)
536 * "ge x.y" -> "x.y:"
537 * "gt x.y" -> "w.z:" (with w.z = x.y + 1)
538 *
539 * If y is not present, assume that is "0".
540 *
541 * The syntax eq, le, lt, ge and gt are proper to the acl syntax. The
542 * following block of code detect the operator, and rewrite each value
543 * in parsable string.
544 */
545 if (expr->pat.parse == pat_parse_int ||
546 expr->pat.parse == pat_parse_dotted_ver) {
547 /* Check for operator. If the argument is operator, memorise it and
548 * continue to the next argument.
549 */
550 op = get_std_op(arg);
551 if (op != -1) {
552 operator = op;
553 args++;
554 continue;
555 }
556
557 /* Check if the pattern contain ':' or '-' character. */
558 contain_colon = (strchr(arg, ':') || strchr(arg, '-'));
559
560 /* If the pattern contain ':' or '-' character, give it to the parser as is.
561 * If no contain ':' and operator is STD_OP_EQ, give it to the parser as is.
562 * In other case, try to convert the value according with the operator.
563 */
564 if (!contain_colon && operator != STD_OP_EQ) {
565 /* Search '.' separator. */
566 dot = strchr(arg, '.');
567 if (!dot) {
568 have_dot = 0;
569 minor = 0;
570 dot = arg + strlen(arg);
571 }
572 else
573 have_dot = 1;
574
575 /* convert the integer minor part for the pat_parse_dotted_ver() function. */
576 if (expr->pat.parse == pat_parse_dotted_ver && have_dot) {
577 if (strl2llrc(dot+1, strlen(dot+1), &minor) != 0) {
578 memprintf(err, "'%s' is neither a number nor a supported operator", arg);
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]579 goto out_free_expr;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]580 }
581 if (minor >= 65536) {
582 memprintf(err, "'%s' contains too large a minor value", arg);
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]583 goto out_free_expr;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]584 }
585 }
586
587 /* convert the integer value for the pat_parse_int() function, and the
588 * integer major part for the pat_parse_dotted_ver() function.
589 */
590 if (strl2llrc(arg, dot - arg, &value) != 0) {
591 memprintf(err, "'%s' is neither a number nor a supported operator", arg);
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]592 goto out_free_expr;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]593 }
594 if (expr->pat.parse == pat_parse_dotted_ver) {
595 if (value >= 65536) {
596 memprintf(err, "'%s' contains too large a major value", arg);
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]597 goto out_free_expr;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]598 }
599 value = (value << 16) | (minor & 0xffff);
600 }
601
602 switch (operator) {
603
604 case STD_OP_EQ: /* this case is not possible. */
605 memprintf(err, "internal error");
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]606 goto out_free_expr;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]607
608 case STD_OP_GT:
609 value++; /* gt = ge + 1 */
Tim Duesterhus588b3142020-05-29 14:35:51 +0200[diff] [blame]610 /* fall through */
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]611
612 case STD_OP_GE:
613 if (expr->pat.parse == pat_parse_int)
614 snprintf(buffer, NB_LLMAX_STR+NB_LLMAX_STR+2, "%lld:", value);
615 else
616 snprintf(buffer, NB_LLMAX_STR+NB_LLMAX_STR+2, "%lld.%lld:",
617 value >> 16, value & 0xffff);
618 arg = buffer;
619 break;
620
621 case STD_OP_LT:
622 value--; /* lt = le - 1 */
Tim Duesterhus588b3142020-05-29 14:35:51 +0200[diff] [blame]623 /* fall through */
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]624
625 case STD_OP_LE:
626 if (expr->pat.parse == pat_parse_int)
627 snprintf(buffer, NB_LLMAX_STR+NB_LLMAX_STR+2, ":%lld", value);
628 else
629 snprintf(buffer, NB_LLMAX_STR+NB_LLMAX_STR+2, ":%lld.%lld",
630 value >> 16, value & 0xffff);
631 arg = buffer;
632 break;
633 }
634 }
635 }
636
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]637 /* Add sample to the reference, and try to compile it fior each pattern
638 * using this value.
639 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]640 if (!pat_ref_add(ref, arg, NULL, err))
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]641 goto out_free_expr;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]642 args++;
643 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]644
645 return expr;
646
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]647 out_free_expr:
648 prune_acl_expr(expr);
649 free(expr);
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]650 out_free_smp:
Christopher Faulet361935a2019-09-13 09:50:15 +0200[diff] [blame]651 free(ckw);
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]652 free(smp);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]653 out_return:
654 return NULL;
655}
656
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200[diff] [blame]657/* Purge everything in the acl <acl>, then return <acl>. */
658struct acl *prune_acl(struct acl *acl) {
659
660 struct acl_expr *expr, *exprb;
661
662 free(acl->name);
663
664 list_for_each_entry_safe(expr, exprb, &acl->expr, list) {
665 LIST_DEL(&expr->list);
666 prune_acl_expr(expr);
667 free(expr);
668 }
669
670 return acl;
671}
672
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]673/* Parse an ACL with the name starting at <args>[0], and with a list of already
674 * known ACLs in <acl>. If the ACL was not in the list, it will be added.
Willy Tarreau2a56c5e2010-03-15 16:13:29 +0100[diff] [blame]675 * A pointer to that ACL is returned. If the ACL has an empty name, then it's
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]676 * an anonymous one and it won't be merged with any other one. If <err> is not
677 * NULL, it will be filled with an appropriate error. This pointer must be
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]678 * freeable or NULL. <al> is the arg_list serving as a head for unresolved
679 * dependencies.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]680 *
681 * args syntax: <aclname> <acl_expr>
682 */
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]683struct acl *parse_acl(const char **args, struct list *known_acl, char **err, struct arg_list *al,
684 const char *file, int line)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]685{
686 __label__ out_return, out_free_acl_expr, out_free_name;
687 struct acl *cur_acl;
688 struct acl_expr *acl_expr;
689 char *name;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]690 const char *pos;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]691
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]692 if (**args && (pos = invalid_char(*args))) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]693 memprintf(err, "invalid character in ACL name : '%c'", *pos);
Willy Tarreau2e74c3f2007-12-02 18:45:09 +0100[diff] [blame]694 goto out_return;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]695 }
Willy Tarreau2e74c3f2007-12-02 18:45:09 +0100[diff] [blame]696
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]697 acl_expr = parse_acl_expr(args + 1, err, al, file, line);
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]698 if (!acl_expr) {
699 /* parse_acl_expr will have filled <err> here */
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]700 goto out_return;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]701 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]702
Willy Tarreau404e8ab2009-07-26 19:40:40 +0200[diff] [blame]703 /* Check for args beginning with an opening parenthesis just after the
704 * subject, as this is almost certainly a typo. Right now we can only
705 * emit a warning, so let's do so.
706 */
Krzysztof Piotr Oledzki4cdd8312009-10-05 00:23:35 +0200[diff] [blame]707 if (!strchr(args[1], '(') && *args[2] == '(')
Christopher Faulet767a84b2017-11-24 16:50:31 +0100[diff] [blame]708 ha_warning("parsing acl '%s' :\n"
709 " matching '%s' for pattern '%s' is likely a mistake and probably\n"
710 " not what you want. Maybe you need to remove the extraneous space before '('.\n"
711 " If you are really sure this is not an error, please insert '--' between the\n"
712 " match and the pattern to make this warning message disappear.\n",
713 args[0], args[1], args[2]);
Willy Tarreau404e8ab2009-07-26 19:40:40 +0200[diff] [blame]714
Willy Tarreau2a56c5e2010-03-15 16:13:29 +0100[diff] [blame]715 if (*args[0])
716 cur_acl = find_acl_by_name(args[0], known_acl);
717 else
718 cur_acl = NULL;
719
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]720 if (!cur_acl) {
721 name = strdup(args[0]);
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]722 if (!name) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]723 memprintf(err, "out of memory when parsing ACL");
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]724 goto out_free_acl_expr;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]725 }
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]726 cur_acl = calloc(1, sizeof(*cur_acl));
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]727 if (cur_acl == NULL) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]728 memprintf(err, "out of memory when parsing ACL");
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]729 goto out_free_name;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]730 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]731
732 LIST_INIT(&cur_acl->expr);
733 LIST_ADDQ(known_acl, &cur_acl->list);
734 cur_acl->name = name;
735 }
736
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]737 /* We want to know what features the ACL needs (typically HTTP parsing),
738 * and where it may be used. If an ACL relies on multiple matches, it is
739 * OK if at least one of them may match in the context where it is used.
740 */
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]741 cur_acl->use |= acl_expr->smp->fetch->use;
742 cur_acl->val |= acl_expr->smp->fetch->val;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]743 LIST_ADDQ(&cur_acl->expr, &acl_expr->list);
744 return cur_acl;
745
746 out_free_name:
747 free(name);
748 out_free_acl_expr:
749 prune_acl_expr(acl_expr);
750 free(acl_expr);
751 out_return:
752 return NULL;
753}
754
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]755/* Some useful ACLs provided by default. Only those used are allocated. */
756
757const struct {
758 const char *name;
759 const char *expr[4]; /* put enough for longest expression */
760} default_acl_list[] = {
Willy Tarreau58393e12008-07-20 10:39:22 +0200[diff] [blame]761 { .name = "TRUE", .expr = {"always_true",""}},
762 { .name = "FALSE", .expr = {"always_false",""}},
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]763 { .name = "LOCALHOST", .expr = {"src","127.0.0.1/8",""}},
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]764 { .name = "HTTP", .expr = {"req_proto_http",""}},
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]765 { .name = "HTTP_1.0", .expr = {"req_ver","1.0",""}},
766 { .name = "HTTP_1.1", .expr = {"req_ver","1.1",""}},
767 { .name = "METH_CONNECT", .expr = {"method","CONNECT",""}},
Daniel Schneller9ff96c72016-04-11 17:45:29 +0200[diff] [blame]768 { .name = "METH_DELETE", .expr = {"method","DELETE",""}},
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]769 { .name = "METH_GET", .expr = {"method","GET","HEAD",""}},
770 { .name = "METH_HEAD", .expr = {"method","HEAD",""}},
771 { .name = "METH_OPTIONS", .expr = {"method","OPTIONS",""}},
772 { .name = "METH_POST", .expr = {"method","POST",""}},
Daniel Schneller9ff96c72016-04-11 17:45:29 +0200[diff] [blame]773 { .name = "METH_PUT", .expr = {"method","PUT",""}},
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]774 { .name = "METH_TRACE", .expr = {"method","TRACE",""}},
775 { .name = "HTTP_URL_ABS", .expr = {"url_reg","^[^/:]*://",""}},
776 { .name = "HTTP_URL_SLASH", .expr = {"url_beg","/",""}},
777 { .name = "HTTP_URL_STAR", .expr = {"url","*",""}},
778 { .name = "HTTP_CONTENT", .expr = {"hdr_val(content-length)","gt","0",""}},
Emeric Brunbede3d02009-06-30 17:54:00 +0200[diff] [blame]779 { .name = "RDP_COOKIE", .expr = {"req_rdp_cookie_cnt","gt","0",""}},
Willy Tarreauc6317702008-07-20 09:29:50 +0200[diff] [blame]780 { .name = "REQ_CONTENT", .expr = {"req_len","gt","0",""}},
Willy Tarreaub6fb4202008-07-20 11:18:28 +0200[diff] [blame]781 { .name = "WAIT_END", .expr = {"wait_end",""}},
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]782 { .name = NULL, .expr = {""}}
783};
784
785/* Find a default ACL from the default_acl list, compile it and return it.
786 * If the ACL is not found, NULL is returned. In theory, it cannot fail,
787 * except when default ACLs are broken, in which case it will return NULL.
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]788 * If <known_acl> is not NULL, the ACL will be queued at its tail. If <err> is
789 * not NULL, it will be filled with an error message if an error occurs. This
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]790 * pointer must be freeable or NULL. <al> is an arg_list serving as a list head
791 * to report missing dependencies.
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]792 */
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]793static struct acl *find_acl_default(const char *acl_name, struct list *known_acl,
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]794 char **err, struct arg_list *al,
795 const char *file, int line)
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]796{
797 __label__ out_return, out_free_acl_expr, out_free_name;
798 struct acl *cur_acl;
799 struct acl_expr *acl_expr;
800 char *name;
801 int index;
802
803 for (index = 0; default_acl_list[index].name != NULL; index++) {
804 if (strcmp(acl_name, default_acl_list[index].name) == 0)
805 break;
806 }
807
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]808 if (default_acl_list[index].name == NULL) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]809 memprintf(err, "no such ACL : '%s'", acl_name);
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]810 return NULL;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]811 }
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]812
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]813 acl_expr = parse_acl_expr((const char **)default_acl_list[index].expr, err, al, file, line);
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]814 if (!acl_expr) {
815 /* parse_acl_expr must have filled err here */
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]816 goto out_return;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]817 }
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]818
819 name = strdup(acl_name);
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]820 if (!name) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]821 memprintf(err, "out of memory when building default ACL '%s'", acl_name);
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]822 goto out_free_acl_expr;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]823 }
824
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]825 cur_acl = calloc(1, sizeof(*cur_acl));
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]826 if (cur_acl == NULL) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]827 memprintf(err, "out of memory when building default ACL '%s'", acl_name);
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]828 goto out_free_name;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]829 }
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]830
831 cur_acl->name = name;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]832 cur_acl->use |= acl_expr->smp->fetch->use;
833 cur_acl->val |= acl_expr->smp->fetch->val;
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]834 LIST_INIT(&cur_acl->expr);
835 LIST_ADDQ(&cur_acl->expr, &acl_expr->list);
836 if (known_acl)
837 LIST_ADDQ(known_acl, &cur_acl->list);
838
839 return cur_acl;
840
841 out_free_name:
842 free(name);
843 out_free_acl_expr:
844 prune_acl_expr(acl_expr);
845 free(acl_expr);
846 out_return:
847 return NULL;
848}
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]849
850/* Purge everything in the acl_cond <cond>, then return <cond>. */
851struct acl_cond *prune_acl_cond(struct acl_cond *cond)
852{
853 struct acl_term_suite *suite, *tmp_suite;
854 struct acl_term *term, *tmp_term;
855
856 /* iterate through all term suites and free all terms and all suites */
857 list_for_each_entry_safe(suite, tmp_suite, &cond->suites, list) {
858 list_for_each_entry_safe(term, tmp_term, &suite->terms, list)
859 free(term);
860 free(suite);
861 }
862 return cond;
863}
864
865/* Parse an ACL condition starting at <args>[0], relying on a list of already
866 * known ACLs passed in <known_acl>. The new condition is returned (or NULL in
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]867 * case of low memory). Supports multiple conditions separated by "or". If
868 * <err> is not NULL, it will be filled with a pointer to an error message in
869 * case of error, that the caller is responsible for freeing. The initial
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]870 * location must either be freeable or NULL. The list <al> serves as a list head
871 * for unresolved dependencies.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]872 */
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]873struct acl_cond *parse_acl_cond(const char **args, struct list *known_acl,
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]874 enum acl_cond_pol pol, char **err, struct arg_list *al,
875 const char *file, int line)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]876{
877 __label__ out_return, out_free_suite, out_free_term;
Willy Tarreau74b98a82007-06-16 19:35:18 +0200[diff] [blame]878 int arg, neg;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]879 const char *word;
880 struct acl *cur_acl;
881 struct acl_term *cur_term;
882 struct acl_term_suite *cur_suite;
883 struct acl_cond *cond;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]884 unsigned int suite_val;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]885
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]886 cond = calloc(1, sizeof(*cond));
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]887 if (cond == NULL) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]888 memprintf(err, "out of memory when parsing condition");
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]889 goto out_return;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]890 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]891
892 LIST_INIT(&cond->list);
893 LIST_INIT(&cond->suites);
894 cond->pol = pol;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]895 cond->val = 0;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]896
897 cur_suite = NULL;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]898 suite_val = ~0U;
Willy Tarreau74b98a82007-06-16 19:35:18 +0200[diff] [blame]899 neg = 0;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]900 for (arg = 0; *args[arg]; arg++) {
901 word = args[arg];
902
903 /* remove as many exclamation marks as we can */
904 while (*word == '!') {
905 neg = !neg;
906 word++;
907 }
908
909 /* an empty word is allowed because we cannot force the user to
910 * always think about not leaving exclamation marks alone.
911 */
912 if (!*word)
913 continue;
914
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]915 if (strcasecmp(word, "or") == 0 || strcmp(word, "||") == 0) {
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]916 /* new term suite */
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]917 cond->val |= suite_val;
918 suite_val = ~0U;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]919 cur_suite = NULL;
920 neg = 0;
921 continue;
922 }
923
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]924 if (strcmp(word, "{") == 0) {
925 /* we may have a complete ACL expression between two braces,
926 * find the last one.
927 */
928 int arg_end = arg + 1;
929 const char **args_new;
930
931 while (*args[arg_end] && strcmp(args[arg_end], "}") != 0)
932 arg_end++;
933
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]934 if (!*args[arg_end]) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]935 memprintf(err, "missing closing '}' in condition");
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]936 goto out_free_suite;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]937 }
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]938
939 args_new = calloc(1, (arg_end - arg + 1) * sizeof(*args_new));
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]940 if (!args_new) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]941 memprintf(err, "out of memory when parsing condition");
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]942 goto out_free_suite;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]943 }
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]944
Willy Tarreau2a56c5e2010-03-15 16:13:29 +0100[diff] [blame]945 args_new[0] = "";
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]946 memcpy(args_new + 1, args + arg + 1, (arg_end - arg) * sizeof(*args_new));
947 args_new[arg_end - arg] = "";
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]948 cur_acl = parse_acl(args_new, known_acl, err, al, file, line);
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]949 free(args_new);
950
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]951 if (!cur_acl) {
952 /* note that parse_acl() must have filled <err> here */
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]953 goto out_free_suite;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]954 }
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]955 arg = arg_end;
956 }
957 else {
958 /* search for <word> in the known ACL names. If we do not find
959 * it, let's look for it in the default ACLs, and if found, add
960 * it to the list of ACLs of this proxy. This makes it possible
961 * to override them.
962 */
963 cur_acl = find_acl_by_name(word, known_acl);
964 if (cur_acl == NULL) {
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]965 cur_acl = find_acl_default(word, known_acl, err, al, file, line);
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]966 if (cur_acl == NULL) {
967 /* note that find_acl_default() must have filled <err> here */
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]968 goto out_free_suite;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]969 }
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]970 }
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]971 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]972
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]973 cur_term = calloc(1, sizeof(*cur_term));
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]974 if (cur_term == NULL) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]975 memprintf(err, "out of memory when parsing condition");
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]976 goto out_free_suite;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]977 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]978
979 cur_term->acl = cur_acl;
980 cur_term->neg = neg;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]981
982 /* Here it is a bit complex. The acl_term_suite is a conjunction
983 * of many terms. It may only be used if all of its terms are
984 * usable at the same time. So the suite's validity domain is an
985 * AND between all ACL keywords' ones. But, the global condition
986 * is valid if at least one term suite is OK. So it's an OR between
987 * all of their validity domains. We could emit a warning as soon
988 * as suite_val is null because it means that the last ACL is not
989 * compatible with the previous ones. Let's remain simple for now.
990 */
991 cond->use |= cur_acl->use;
992 suite_val &= cur_acl->val;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]993
994 if (!cur_suite) {
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]995 cur_suite = calloc(1, sizeof(*cur_suite));
Willy Tarreauf678b7f2013-01-24 00:25:39 +0100[diff] [blame]996 if (cur_suite == NULL) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]997 memprintf(err, "out of memory when parsing condition");
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]998 goto out_free_term;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]999 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1000 LIST_INIT(&cur_suite->terms);
1001 LIST_ADDQ(&cond->suites, &cur_suite->list);
1002 }
1003 LIST_ADDQ(&cur_suite->terms, &cur_term->list);
Willy Tarreau74b98a82007-06-16 19:35:18 +0200[diff] [blame]1004 neg = 0;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1005 }
1006
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1007 cond->val |= suite_val;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1008 return cond;
1009
1010 out_free_term:
1011 free(cur_term);
1012 out_free_suite:
1013 prune_acl_cond(cond);
1014 free(cond);
1015 out_return:
1016 return NULL;
1017}
1018
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1019/* Builds an ACL condition starting at the if/unless keyword. The complete
1020 * condition is returned. NULL is returned in case of error or if the first
1021 * word is neither "if" nor "unless". It automatically sets the file name and
Willy Tarreau25320b22013-03-24 07:22:08 +0100[diff] [blame]1022 * the line number in the condition for better error reporting, and sets the
1023 * HTTP intiailization requirements in the proxy. If <err> is not NULL, it will
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1024 * be filled with a pointer to an error message in case of error, that the
1025 * caller is responsible for freeing. The initial location must either be
1026 * freeable or NULL.
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1027 */
Christopher Faulet1b421ea2017-09-22 14:38:56 +0200[diff] [blame]1028struct acl_cond *build_acl_cond(const char *file, int line, struct list *known_acl,
1029 struct proxy *px, const char **args, char **err)
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1030{
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]1031 enum acl_cond_pol pol = ACL_COND_NONE;
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1032 struct acl_cond *cond = NULL;
1033
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1034 if (err)
1035 *err = NULL;
1036
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1037 if (!strcmp(*args, "if")) {
1038 pol = ACL_COND_IF;
1039 args++;
1040 }
1041 else if (!strcmp(*args, "unless")) {
1042 pol = ACL_COND_UNLESS;
1043 args++;
1044 }
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1045 else {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]1046 memprintf(err, "conditions must start with either 'if' or 'unless'");
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1047 return NULL;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1048 }
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1049
Christopher Faulet1b421ea2017-09-22 14:38:56 +0200[diff] [blame]1050 cond = parse_acl_cond(args, known_acl, pol, err, &px->conf.args, file, line);
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1051 if (!cond) {
1052 /* note that parse_acl_cond must have filled <err> here */
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1053 return NULL;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1054 }
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1055
1056 cond->file = file;
1057 cond->line = line;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1058 px->http_needed |= !!(cond->use & SMP_USE_HTTP_ANY);
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1059 return cond;
1060}
1061
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1062/* Execute condition <cond> and return either ACL_TEST_FAIL, ACL_TEST_MISS or
1063 * ACL_TEST_PASS depending on the test results. ACL_TEST_MISS may only be
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]1064 * returned if <opt> does not contain SMP_OPT_FINAL, indicating that incomplete
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1065 * data is being examined. The function automatically sets SMP_OPT_ITERATE. This
1066 * function only computes the condition, it does not apply the polarity required
1067 * by IF/UNLESS, it's up to the caller to do this using something like this :
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1068 *
1069 * res = acl_pass(res);
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1070 * if (res == ACL_TEST_MISS)
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1071 * return 0;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1072 * if (cond->pol == ACL_COND_UNLESS)
1073 * res = !res;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1074 */
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]1075enum acl_test_res acl_exec_cond(struct acl_cond *cond, struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1076{
1077 __label__ fetch_next;
1078 struct acl_term_suite *suite;
1079 struct acl_term *term;
1080 struct acl_expr *expr;
1081 struct acl *acl;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]1082 struct sample smp;
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]1083 enum acl_test_res acl_res, suite_res, cond_res;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1084
Willy Tarreau7a777ed2012-04-26 11:44:02 +0200[diff] [blame]1085 /* ACLs are iterated over all values, so let's always set the flag to
1086 * indicate this to the fetch functions.
1087 */
1088 opt |= SMP_OPT_ITERATE;
1089
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1090 /* We're doing a logical OR between conditions so we initialize to FAIL.
1091 * The MISS status is propagated down from the suites.
1092 */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1093 cond_res = ACL_TEST_FAIL;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1094 list_for_each_entry(suite, &cond->suites, list) {
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1095 /* Evaluate condition suite <suite>. We stop at the first term
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]1096 * which returns ACL_TEST_FAIL. The MISS status is still propagated
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1097 * in case of uncertainty in the result.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1098 */
1099
1100 /* we're doing a logical AND between terms, so we must set the
1101 * initial value to PASS.
1102 */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1103 suite_res = ACL_TEST_PASS;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1104 list_for_each_entry(term, &suite->terms, list) {
1105 acl = term->acl;
1106
1107 /* FIXME: use cache !
1108 * check acl->cache_idx for this.
1109 */
1110
1111 /* ACL result not cached. Let's scan all the expressions
1112 * and use the first one to match.
1113 */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1114 acl_res = ACL_TEST_FAIL;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1115 list_for_each_entry(expr, &acl->expr, list) {
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]1116 /* we need to reset context and flags */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]1117 memset(&smp, 0, sizeof(smp));
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1118 fetch_next:
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]1119 if (!sample_process(px, sess, strm, opt, expr->smp, &smp)) {
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1120 /* maybe we could not fetch because of missing data */
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]1121 if (smp.flags & SMP_F_MAY_CHANGE && !(opt & SMP_OPT_FINAL))
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1122 acl_res |= ACL_TEST_MISS;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1123 continue;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1124 }
Willy Tarreauc4262962010-05-10 23:42:40 +0200[diff] [blame]1125
Thierry FOURNIER1794fdf2014-01-17 15:25:13 +0100[diff] [blame]1126 acl_res |= pat2acl(pattern_exec_match(&expr->pat, &smp, 0));
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1127 /*
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1128 * OK now acl_res holds the result of this expression
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1129 * as one of ACL_TEST_FAIL, ACL_TEST_MISS or ACL_TEST_PASS.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1130 *
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1131 * Then if (!MISS) we can cache the result, and put
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]1132 * (smp.flags & SMP_F_VOLATILE) in the cache flags.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1133 *
1134 * FIXME: implement cache.
1135 *
1136 */
1137
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1138 /* we're ORing these terms, so a single PASS is enough */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1139 if (acl_res == ACL_TEST_PASS)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1140 break;
1141
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]1142 if (smp.flags & SMP_F_NOT_LAST)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1143 goto fetch_next;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1144
1145 /* sometimes we know the fetched data is subject to change
1146 * later and give another chance for a new match (eg: request
1147 * size, time, ...)
1148 */
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]1149 if (smp.flags & SMP_F_MAY_CHANGE && !(opt & SMP_OPT_FINAL))
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1150 acl_res |= ACL_TEST_MISS;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1151 }
1152 /*
1153 * Here we have the result of an ACL (cached or not).
1154 * ACLs are combined, negated or not, to form conditions.
1155 */
1156
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1157 if (term->neg)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1158 acl_res = acl_neg(acl_res);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1159
1160 suite_res &= acl_res;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1161
Willy Tarreau79c412b2013-10-30 19:30:32 +0100[diff] [blame]1162 /* we're ANDing these terms, so a single FAIL or MISS is enough */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1163 if (suite_res != ACL_TEST_PASS)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1164 break;
1165 }
1166 cond_res |= suite_res;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1167
1168 /* we're ORing these terms, so a single PASS is enough */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1169 if (cond_res == ACL_TEST_PASS)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1170 break;
1171 }
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1172 return cond_res;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1173}
1174
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1175/* Returns a pointer to the first ACL conflicting with usage at place <where>
1176 * which is one of the SMP_VAL_* bits indicating a check place, or NULL if
1177 * no conflict is found. Only full conflicts are detected (ACL is not usable).
1178 * Use the next function to check for useless keywords.
Willy Tarreaudd64f8d2008-07-27 22:02:32 +0200[diff] [blame]1179 */
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1180const struct acl *acl_cond_conflicts(const struct acl_cond *cond, unsigned int where)
Willy Tarreaudd64f8d2008-07-27 22:02:32 +0200[diff] [blame]1181{
1182 struct acl_term_suite *suite;
1183 struct acl_term *term;
1184 struct acl *acl;
1185
1186 list_for_each_entry(suite, &cond->suites, list) {
1187 list_for_each_entry(term, &suite->terms, list) {
1188 acl = term->acl;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1189 if (!(acl->val & where))
Willy Tarreaudd64f8d2008-07-27 22:02:32 +0200[diff] [blame]1190 return acl;
1191 }
1192 }
1193 return NULL;
1194}
1195
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1196/* Returns a pointer to the first ACL and its first keyword to conflict with
1197 * usage at place <where> which is one of the SMP_VAL_* bits indicating a check
1198 * place. Returns true if a conflict is found, with <acl> and <kw> set (if non
1199 * null), or false if not conflict is found. The first useless keyword is
1200 * returned.
1201 */
Willy Tarreau93fddf12013-03-31 22:59:32 +0200[diff] [blame]1202int acl_cond_kw_conflicts(const struct acl_cond *cond, unsigned int where, struct acl const **acl, char const **kw)
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1203{
1204 struct acl_term_suite *suite;
1205 struct acl_term *term;
1206 struct acl_expr *expr;
1207
1208 list_for_each_entry(suite, &cond->suites, list) {
1209 list_for_each_entry(term, &suite->terms, list) {
1210 list_for_each_entry(expr, &term->acl->expr, list) {
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]1211 if (!(expr->smp->fetch->val & where)) {
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1212 if (acl)
1213 *acl = term->acl;
1214 if (kw)
1215 *kw = expr->kw;
1216 return 1;
1217 }
1218 }
1219 }
1220 }
1221 return 0;
1222}
1223
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1224/*
1225 * Find targets for userlist and groups in acl. Function returns the number
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]1226 * of errors or OK if everything is fine. It must be called only once sample
1227 * fetch arguments have been resolved (after smp_resolve_args()).
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1228 */
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]1229int acl_find_targets(struct proxy *p)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1230{
1231
1232 struct acl *acl;
1233 struct acl_expr *expr;
Thierry FOURNIER3ead5b92013-12-13 12:12:18 +0100[diff] [blame]1234 struct pattern_list *pattern;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1235 int cfgerr = 0;
Thierry FOURNIERc5959fd2014-01-20 14:29:33 +0100[diff] [blame]1236 struct pattern_expr_list *pexp;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1237
1238 list_for_each_entry(acl, &p->acl, list) {
1239 list_for_each_entry(expr, &acl->expr, list) {
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]1240 if (!strcmp(expr->kw, "http_auth_group")) {
1241 /* Note: the ARGT_USR argument may only have been resolved earlier
1242 * by smp_resolve_args().
1243 */
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]1244 if (expr->smp->arg_p->unresolved) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100[diff] [blame]1245 ha_alert("Internal bug in proxy %s: %sacl %s %s() makes use of unresolved userlist '%s'. Please report this.\n",
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200[diff] [blame]1246 p->id, *acl->name ? "" : "anonymous ", acl->name, expr->kw,
1247 expr->smp->arg_p->data.str.area);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]1248 cfgerr++;
Willy Tarreau496aa012012-06-01 10:38:29 +0200[diff] [blame]1249 continue;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1250 }
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1251
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]1252 if (LIST_ISEMPTY(&expr->pat.head)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100[diff] [blame]1253 ha_alert("proxy %s: acl %s %s(): no groups specified.\n",
1254 p->id, acl->name, expr->kw);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1255 cfgerr++;
1256 continue;
1257 }
1258
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]1259 /* For each pattern, check if the group exists. */
Thierry FOURNIERc5959fd2014-01-20 14:29:33 +0100[diff] [blame]1260 list_for_each_entry(pexp, &expr->pat.head, list) {
1261 if (LIST_ISEMPTY(&pexp->expr->patterns)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100[diff] [blame]1262 ha_alert("proxy %s: acl %s %s(): no groups specified.\n",
1263 p->id, acl->name, expr->kw);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1264 cfgerr++;
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]1265 continue;
1266 }
1267
Thierry FOURNIERc5959fd2014-01-20 14:29:33 +0100[diff] [blame]1268 list_for_each_entry(pattern, &pexp->expr->patterns, list) {
1269 /* this keyword only has one argument */
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]1270 if (!check_group(expr->smp->arg_p->data.usr, pattern->pat.ptr.str)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100[diff] [blame]1271 ha_alert("proxy %s: acl %s %s(): invalid group '%s'.\n",
1272 p->id, acl->name, expr->kw, pattern->pat.ptr.str);
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]1273 cfgerr++;
1274 }
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1275 }
1276 }
1277 }
1278 }
1279 }
1280
1281 return cfgerr;
1282}
Willy Tarreaudd64f8d2008-07-27 22:02:32 +0200[diff] [blame]1283
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]1284/* initializes ACLs by resolving the sample fetch names they rely upon.
1285 * Returns 0 on success, otherwise an error.
1286 */
1287int init_acl()
1288{
1289 int err = 0;
1290 int index;
1291 const char *name;
1292 struct acl_kw_list *kwl;
1293 struct sample_fetch *smp;
1294
1295 list_for_each_entry(kwl, &acl_keywords.list, list) {
1296 for (index = 0; kwl->kw[index].kw != NULL; index++) {
1297 name = kwl->kw[index].fetch_kw;
1298 if (!name)
1299 name = kwl->kw[index].kw;
1300
1301 smp = find_sample_fetch(name, strlen(name));
1302 if (!smp) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100[diff] [blame]1303 ha_alert("Critical internal error: ACL keyword '%s' relies on sample fetch '%s' which was not registered!\n",
1304 kwl->kw[index].kw, name);
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]1305 err++;
1306 continue;
1307 }
1308 kwl->kw[index].smp = smp;
1309 }
1310 }
1311 return err;
1312}
Willy Tarreaud4c33c82013-01-07 21:59:07 +0100[diff] [blame]1313
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1314/************************************************************************/
Willy Tarreaud4c33c82013-01-07 21:59:07 +0100[diff] [blame]1315/* All supported sample and ACL keywords must be declared here. */
1316/************************************************************************/
1317
1318/* Note: must not be declared <const> as its list will be overwritten.
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]1319 * Please take care of keeping this list alphabetically sorted.
1320 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]1321static struct acl_kw_list acl_kws = {ILH, {
Willy Tarreaud4c33c82013-01-07 21:59:07 +0100[diff] [blame]1322 { /* END */ },
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1323}};
1324
Willy Tarreau0108d902018-11-25 19:14:37 +0100[diff] [blame]1325INITCALL1(STG_REGISTER, acl_register_keywords, &acl_kws);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1326
1327/*
1328 * Local variables:
1329 * c-indent-level: 8
1330 * c-basic-offset: 8
1331 * End:
1332 */