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git01.mediatek.com / haproxy / f187ce68b1c0f5d2ba8434657ddd34dabf3f7ef3 / . / src / acl.c
blob: fa8ae923803bb858fab58ad67b046a40c66f338a [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
17#include <common/config.h>
Willy Tarreau0108d902018-11-25 19:14:37 +0100[diff] [blame]18#include <common/initcall.h>
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]19#include <common/mini-clist.h>
20#include <common/standard.h>
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]21#include <common/uri_auth.h>
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]22
Willy Tarreau2b5285d2010-05-09 23:45:24 +0200[diff] [blame]23#include <types/global.h>
24
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]25#include <proto/acl.h>
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]26#include <proto/arg.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]27#include <proto/auth.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]28#include <proto/channel.h>
Willy Tarreau404e8ab2009-07-26 19:40:40 +0200[diff] [blame]29#include <proto/log.h>
Thierry FOURNIERed66c292013-11-28 11:05:19 +0100[diff] [blame]30#include <proto/pattern.h>
Willy Tarreau0b1cd942010-05-16 22:18:27 +0200[diff] [blame]31#include <proto/proxy.h>
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]32#include <proto/sample.h>
Willy Tarreaud28c3532012-04-19 19:28:33 +0200[diff] [blame]33#include <proto/stick_table.h>
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]34
Willy Tarreauc4262962010-05-10 23:42:40 +0200[diff] [blame]35#include <ebsttree.h>
36
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]37/* List head of all known ACL keywords */
38static struct acl_kw_list acl_keywords = {
39 .list = LIST_HEAD_INIT(acl_keywords.list)
40};
41
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]42/* input values are 0 or 3, output is the same */
Thierry FOURNIER1794fdf2014-01-17 15:25:13 +0100[diff] [blame]43static inline enum acl_test_res pat2acl(struct pattern *pat)
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]44{
Thierry FOURNIER1794fdf2014-01-17 15:25:13 +0100[diff] [blame]45 if (pat)
46 return ACL_TEST_PASS;
47 else
48 return ACL_TEST_FAIL;
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]49}
50
Willy Tarreaua5909832007-06-17 20:40:25 +0200[diff] [blame]51/*
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]52 * Registers the ACL keyword list <kwl> as a list of valid keywords for next
53 * parsing sessions.
54 */
55void acl_register_keywords(struct acl_kw_list *kwl)
56{
57 LIST_ADDQ(&acl_keywords.list, &kwl->list);
58}
59
60/*
61 * Unregisters the ACL keyword list <kwl> from the list of valid keywords.
62 */
63void acl_unregister_keywords(struct acl_kw_list *kwl)
64{
65 LIST_DEL(&kwl->list);
66 LIST_INIT(&kwl->list);
67}
68
69/* Return a pointer to the ACL <name> within the list starting at <head>, or
70 * NULL if not found.
71 */
72struct acl *find_acl_by_name(const char *name, struct list *head)
73{
74 struct acl *acl;
75 list_for_each_entry(acl, head, list) {
76 if (strcmp(acl->name, name) == 0)
77 return acl;
78 }
79 return NULL;
80}
81
82/* 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]83 * <kw> contains an opening parenthesis or a comma, only the left part of it is
84 * checked.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]85 */
86struct acl_keyword *find_acl_kw(const char *kw)
87{
88 int index;
89 const char *kwend;
90 struct acl_kw_list *kwl;
91
Willy Tarreau4bfa4222013-12-16 22:01:06 +0100[diff] [blame]92 kwend = kw;
Willy Tarreaued2c6622020-02-14 18:27:10 +0100[diff] [blame]93 while (is_idchar(*kwend))
Willy Tarreau4bfa4222013-12-16 22:01:06 +0100[diff] [blame]94 kwend++;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]95
96 list_for_each_entry(kwl, &acl_keywords.list, list) {
97 for (index = 0; kwl->kw[index].kw != NULL; index++) {
98 if ((strncmp(kwl->kw[index].kw, kw, kwend - kw) == 0) &&
99 kwl->kw[index].kw[kwend-kw] == 0)
100 return &kwl->kw[index];
101 }
102 }
103 return NULL;
104}
105
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]106static struct acl_expr *prune_acl_expr(struct acl_expr *expr)
107{
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]108 struct arg *arg;
Willy Tarreau145325e2017-04-12 23:03:31 +0200[diff] [blame]109 int unresolved = 0;
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]110
Thierry FOURNIER6f7203d2014-01-14 16:24:51 +0100[diff] [blame]111 pattern_prune(&expr->pat);
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]112
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]113 for (arg = expr->smp->arg_p; arg; arg++) {
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]114 if (arg->type == ARGT_STOP)
115 break;
Willy Tarreau496aa012012-06-01 10:38:29 +0200[diff] [blame]116 if (arg->type == ARGT_STR || arg->unresolved) {
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200[diff] [blame]117 free(arg->data.str.area);
118 arg->data.str.area = NULL;
119 arg->data.str.data = 0;
Willy Tarreau145325e2017-04-12 23:03:31 +0200[diff] [blame]120 unresolved |= arg->unresolved;
Willy Tarreau496aa012012-06-01 10:38:29 +0200[diff] [blame]121 arg->unresolved = 0;
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]122 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]123 }
124
Willy Tarreau145325e2017-04-12 23:03:31 +0200[diff] [blame]125 if (expr->smp->arg_p != empty_arg_list && !unresolved)
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]126 free(expr->smp->arg_p);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]127 return expr;
128}
129
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]130/* Parse an ACL expression starting at <args>[0], and return it. If <err> is
131 * 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]132 * error. This pointer must be freeable or NULL. <al> is an arg_list serving
133 * as a list head to report missing dependencies.
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]134 *
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]135 * Right now, the only accepted syntax is :
136 * <subject> [<value>...]
137 */
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]138struct acl_expr *parse_acl_expr(const char **args, char **err, struct arg_list *al,
139 const char *file, int line)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]140{
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]141 __label__ out_return, out_free_expr;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]142 struct acl_expr *expr;
143 struct acl_keyword *aclkw;
Christopher Faulet54ceb042017-06-14 14:41:33 +0200[diff] [blame]144 int refflags, patflags;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]145 const char *arg;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]146 struct sample_expr *smp = NULL;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]147 int idx = 0;
148 char *ckw = NULL;
149 const char *begw;
150 const char *endw;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]151 const char *endt;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]152 int cur_type;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]153 int nbargs;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]154 int operator = STD_OP_EQ;
155 int op;
156 int contain_colon, have_dot;
157 const char *dot;
158 signed long long value, minor;
159 /* The following buffer contain two numbers, a ':' separator and the final \0. */
160 char buffer[NB_LLMAX_STR + 1 + NB_LLMAX_STR + 1];
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]161 int is_loaded;
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]162 int unique_id;
163 char *error;
164 struct pat_ref *ref;
165 struct pattern_expr *pattern_expr;
Thierry FOURNIER9860c412014-01-29 14:23:29 +0100[diff] [blame]166 int load_as_map = 0;
Willy Tarreau6f0ddca2014-08-29 17:36:40 +0200[diff] [blame]167 int acl_conv_found = 0;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]168
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]169 /* First, we look for an ACL keyword. And if we don't find one, then
170 * we look for a sample fetch expression starting with a sample fetch
171 * keyword.
Willy Tarreaubef91e72013-03-31 23:14:46 +0200[diff] [blame]172 */
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]173
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]174 al->ctx = ARGC_ACL; // to report errors while resolving args late
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]175 al->kw = *args;
176 al->conv = NULL;
177
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]178 aclkw = find_acl_kw(args[0]);
Willy Tarreau20490922014-03-17 18:04:27 +0100[diff] [blame]179 if (aclkw) {
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]180 /* OK we have a real ACL keyword */
Willy Tarreau9987ea92013-06-11 21:09:06 +0200[diff] [blame]181
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]182 /* build new sample expression for this ACL */
Vincent Bernat02779b62016-04-03 13:48:43 +0200[diff] [blame]183 smp = calloc(1, sizeof(*smp));
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]184 if (!smp) {
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]185 memprintf(err, "out of memory when parsing ACL expression");
186 goto out_return;
187 }
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]188 LIST_INIT(&(smp->conv_exprs));
189 smp->fetch = aclkw->smp;
190 smp->arg_p = empty_arg_list;
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]191
Joseph Herlant68082792018-11-15 14:55:09 -0800[diff] [blame]192 /* look for the beginning of the subject arguments */
Willy Tarreaued2c6622020-02-14 18:27:10 +0100[diff] [blame]193 for (arg = args[0]; is_idchar(*arg); arg++)
194 ;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]195
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]196 /* At this point, we have :
197 * - args[0] : beginning of the keyword
198 * - arg : end of the keyword, first character not part of keyword
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]199 */
Willy Tarreau80b53ff2020-02-14 08:40:37 +0100[diff] [blame]200 nbargs = make_arg_list(arg, -1, smp->fetch->arg_mask, &smp->arg_p,
201 err, &endt, NULL, al);
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]202 if (nbargs < 0) {
203 /* note that make_arg_list will have set <err> here */
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]204 memprintf(err, "ACL keyword '%s' : %s", aclkw->kw, *err);
205 goto out_free_smp;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]206 }
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]207
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]208 if (!smp->arg_p) {
209 smp->arg_p = empty_arg_list;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]210 }
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]211 else if (smp->fetch->val_args && !smp->fetch->val_args(smp->arg_p, err)) {
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]212 /* invalid keyword argument, error must have been
213 * set by val_args().
214 */
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]215 memprintf(err, "in argument to '%s', %s", aclkw->kw, *err);
216 goto out_free_smp;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]217 }
218 arg = endt;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]219
Joseph Herlant68082792018-11-15 14:55:09 -0800[diff] [blame]220 /* look for the beginning of the converters list. Those directly attached
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]221 * to the ACL keyword are found just after <arg> which points to the comma.
Willy Tarreau6f0ddca2014-08-29 17:36:40 +0200[diff] [blame]222 * 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]223 * anymore but the one related to the converter's output type.
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]224 */
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]225 cur_type = smp->fetch->out_type;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]226 while (*arg) {
227 struct sample_conv *conv;
228 struct sample_conv_expr *conv_expr;
Willy Tarreau80b53ff2020-02-14 08:40:37 +0100[diff] [blame]229 int err_arg;
230 int argcnt;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]231
232 if (*arg && *arg != ',') {
233 if (ckw)
Willy Tarreau97108e02016-11-25 07:33:24 +0100[diff] [blame]234 memprintf(err, "ACL keyword '%s' : missing comma after converter '%s'.",
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]235 aclkw->kw, ckw);
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]236 else
237 memprintf(err, "ACL keyword '%s' : missing comma after fetch keyword.",
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]238 aclkw->kw);
239 goto out_free_smp;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]240 }
Willy Tarreauae52f062012-04-26 12:13:35 +0200[diff] [blame]241
Willy Tarreau80b53ff2020-02-14 08:40:37 +0100[diff] [blame]242 /* FIXME: how long should we support such idiocies ? Maybe we
243 * should already warn ?
244 */
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]245 while (*arg == ',') /* then trailing commas */
246 arg++;
Willy Tarreau2e845be2012-10-19 19:49:09 +0200[diff] [blame]247
Willy Tarreau97108e02016-11-25 07:33:24 +0100[diff] [blame]248 begw = arg; /* start of converter keyword */
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]249
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]250 if (!*begw)
251 /* none ? end of converters */
252 break;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]253
Willy Tarreaued2c6622020-02-14 18:27:10 +0100[diff] [blame]254 for (endw = begw; is_idchar(*endw); endw++)
255 ;
Willy Tarreau9ca69362013-10-22 19:10:06 +0200[diff] [blame]256
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]257 free(ckw);
258 ckw = my_strndup(begw, endw - begw);
Willy Tarreauf75d0082013-04-07 21:20:44 +0200[diff] [blame]259
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]260 conv = find_sample_conv(begw, endw - begw);
261 if (!conv) {
262 /* Unknown converter method */
Willy Tarreau97108e02016-11-25 07:33:24 +0100[diff] [blame]263 memprintf(err, "ACL keyword '%s' : unknown converter '%s'.",
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]264 aclkw->kw, ckw);
265 goto out_free_smp;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]266 }
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]267
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]268 arg = endw;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]269
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]270 if (conv->in_type >= SMP_TYPES || conv->out_type >= SMP_TYPES) {
Willy Tarreau97108e02016-11-25 07:33:24 +0100[diff] [blame]271 memprintf(err, "ACL keyword '%s' : returns type of converter '%s' is unknown.",
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]272 aclkw->kw, ckw);
273 goto out_free_smp;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]274 }
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]275
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]276 /* If impossible type conversion */
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]277 if (!sample_casts[cur_type][conv->in_type]) {
Willy Tarreau97108e02016-11-25 07:33:24 +0100[diff] [blame]278 memprintf(err, "ACL keyword '%s' : converter '%s' cannot be applied.",
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]279 aclkw->kw, ckw);
280 goto out_free_smp;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]281 }
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]282
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]283 cur_type = conv->out_type;
Vincent Bernat02779b62016-04-03 13:48:43 +0200[diff] [blame]284 conv_expr = calloc(1, sizeof(*conv_expr));
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]285 if (!conv_expr)
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]286 goto out_free_smp;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]287
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]288 LIST_ADDQ(&(smp->conv_exprs), &(conv_expr->list));
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]289 conv_expr->conv = conv;
Willy Tarreau6f0ddca2014-08-29 17:36:40 +0200[diff] [blame]290 acl_conv_found = 1;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]291
Willy Tarreau80b53ff2020-02-14 08:40:37 +0100[diff] [blame]292 al->kw = smp->fetch->kw;
293 al->conv = conv_expr->conv->kw;
294 argcnt = make_arg_list(endw, -1, conv->arg_mask, &conv_expr->arg_p, err, &arg, &err_arg, al);
295 if (argcnt < 0) {
296 memprintf(err, "ACL keyword '%s' : invalid arg %d in converter '%s' : %s.",
297 aclkw->kw, err_arg+1, ckw, *err);
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 (argcnt && !conv->arg_mask) {
302 memprintf(err, "converter '%s' does not support any args", ckw);
303 goto out_free_smp;
304 }
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]305
Willy Tarreau80b53ff2020-02-14 08:40:37 +0100[diff] [blame]306 if (!conv_expr->arg_p)
307 conv_expr->arg_p = empty_arg_list;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]308
Willy Tarreau80b53ff2020-02-14 08:40:37 +0100[diff] [blame]309 if (conv->val_args && !conv->val_args(conv_expr->arg_p, conv, file, line, err)) {
310 memprintf(err, "ACL keyword '%s' : invalid args in converter '%s' : %s.",
311 aclkw->kw, ckw, *err);
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]312 goto out_free_smp;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]313 }
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]314 }
Christopher Faulet361935a2019-09-13 09:50:15 +0200[diff] [blame]315 free(ckw);
316 ckw = NULL;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]317 }
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]318 else {
319 /* This is not an ACL keyword, so we hope this is a sample fetch
320 * keyword that we're going to transparently use as an ACL. If
321 * so, we retrieve a completely parsed expression with args and
322 * convs already done.
323 */
Willy Tarreaue3b57bf2020-02-14 16:50:14 +0100[diff] [blame]324 smp = sample_parse_expr((char **)args, &idx, file, line, err, al, NULL);
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]325 if (!smp) {
326 memprintf(err, "%s in ACL expression '%s'", *err, *args);
327 goto out_return;
328 }
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]329 cur_type = smp_expr_output_type(smp);
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]330 }
331
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]332 expr = calloc(1, sizeof(*expr));
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]333 if (!expr) {
334 memprintf(err, "out of memory when parsing ACL expression");
Christopher Faulet361935a2019-09-13 09:50:15 +0200[diff] [blame]335 goto out_free_smp;
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]336 }
337
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]338 pattern_init_head(&expr->pat);
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]339
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]340 expr->pat.expect_type = cur_type;
341 expr->smp = smp;
342 expr->kw = smp->fetch->kw;
343 smp = NULL; /* don't free it anymore */
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]344
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]345 if (aclkw && !acl_conv_found) {
346 expr->kw = aclkw->kw;
347 expr->pat.parse = aclkw->parse ? aclkw->parse : pat_parse_fcts[aclkw->match_type];
348 expr->pat.index = aclkw->index ? aclkw->index : pat_index_fcts[aclkw->match_type];
349 expr->pat.match = aclkw->match ? aclkw->match : pat_match_fcts[aclkw->match_type];
350 expr->pat.delete = aclkw->delete ? aclkw->delete : pat_delete_fcts[aclkw->match_type];
351 expr->pat.prune = aclkw->prune ? aclkw->prune : pat_prune_fcts[aclkw->match_type];
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]352 }
353
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]354 if (!expr->pat.parse) {
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]355 /* Parse/index/match functions depend on the expression type,
356 * so we have to map them now. Some types can be automatically
357 * converted.
358 */
359 switch (cur_type) {
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]360 case SMP_T_BOOL:
361 expr->pat.parse = pat_parse_fcts[PAT_MATCH_BOOL];
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]362 expr->pat.index = pat_index_fcts[PAT_MATCH_BOOL];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]363 expr->pat.match = pat_match_fcts[PAT_MATCH_BOOL];
Thierry FOURNIERb1136502014-01-15 11:38:49 +0100[diff] [blame]364 expr->pat.delete = pat_delete_fcts[PAT_MATCH_BOOL];
Thierry FOURNIER6f7203d2014-01-14 16:24:51 +0100[diff] [blame]365 expr->pat.prune = pat_prune_fcts[PAT_MATCH_BOOL];
Thierry FOURNIER5d344082014-01-27 14:19:53 +0100[diff] [blame]366 expr->pat.expect_type = pat_match_types[PAT_MATCH_BOOL];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]367 break;
368 case SMP_T_SINT:
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]369 expr->pat.parse = pat_parse_fcts[PAT_MATCH_INT];
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]370 expr->pat.index = pat_index_fcts[PAT_MATCH_INT];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]371 expr->pat.match = pat_match_fcts[PAT_MATCH_INT];
Thierry FOURNIERb1136502014-01-15 11:38:49 +0100[diff] [blame]372 expr->pat.delete = pat_delete_fcts[PAT_MATCH_INT];
Thierry FOURNIER6f7203d2014-01-14 16:24:51 +0100[diff] [blame]373 expr->pat.prune = pat_prune_fcts[PAT_MATCH_INT];
Thierry FOURNIER5d344082014-01-27 14:19:53 +0100[diff] [blame]374 expr->pat.expect_type = pat_match_types[PAT_MATCH_INT];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]375 break;
Willy Tarreau78c5eec2019-04-19 11:45:20 +0200[diff] [blame]376 case SMP_T_ADDR:
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]377 case SMP_T_IPV4:
378 case SMP_T_IPV6:
379 expr->pat.parse = pat_parse_fcts[PAT_MATCH_IP];
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]380 expr->pat.index = pat_index_fcts[PAT_MATCH_IP];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]381 expr->pat.match = pat_match_fcts[PAT_MATCH_IP];
Thierry FOURNIERb1136502014-01-15 11:38:49 +0100[diff] [blame]382 expr->pat.delete = pat_delete_fcts[PAT_MATCH_IP];
Thierry FOURNIER6f7203d2014-01-14 16:24:51 +0100[diff] [blame]383 expr->pat.prune = pat_prune_fcts[PAT_MATCH_IP];
Thierry FOURNIER5d344082014-01-27 14:19:53 +0100[diff] [blame]384 expr->pat.expect_type = pat_match_types[PAT_MATCH_IP];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]385 break;
Thierry FOURNIER9fefbd52014-05-11 15:15:00 +0200[diff] [blame]386 case SMP_T_STR:
387 expr->pat.parse = pat_parse_fcts[PAT_MATCH_STR];
388 expr->pat.index = pat_index_fcts[PAT_MATCH_STR];
389 expr->pat.match = pat_match_fcts[PAT_MATCH_STR];
390 expr->pat.delete = pat_delete_fcts[PAT_MATCH_STR];
391 expr->pat.prune = pat_prune_fcts[PAT_MATCH_STR];
392 expr->pat.expect_type = pat_match_types[PAT_MATCH_STR];
393 break;
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]394 }
395 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]396
Willy Tarreau3c3dfd52013-11-04 18:09:12 +0100[diff] [blame]397 /* Additional check to protect against common mistakes */
Thierry FOURNIERd163e1c2013-11-28 11:41:23 +0100[diff] [blame]398 if (expr->pat.parse && cur_type != SMP_T_BOOL && !*args[1]) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100[diff] [blame]399 ha_warning("parsing acl keyword '%s' :\n"
400 " no pattern to match against were provided, so this ACL will never match.\n"
401 " If this is what you intended, please add '--' to get rid of this warning.\n"
402 " If you intended to match only for existence, please use '-m found'.\n"
403 " If you wanted to force an int to match as a bool, please use '-m bool'.\n"
404 "\n",
405 args[0]);
Willy Tarreau3c3dfd52013-11-04 18:09:12 +0100[diff] [blame]406 }
407
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]408 args++;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]409
410 /* check for options before patterns. Supported options are :
411 * -i : ignore case for all patterns by default
412 * -f : read patterns from those files
Willy Tarreau5adeda12013-03-31 22:13:34 +0200[diff] [blame]413 * -m : force matching method (must be used before -f)
Thierry FOURNIER9860c412014-01-29 14:23:29 +0100[diff] [blame]414 * -M : load the file as map file
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]415 * -u : force the unique id of the acl
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]416 * -- : everything after this is not an option
417 */
Christopher Faulet54ceb042017-06-14 14:41:33 +0200[diff] [blame]418 refflags = PAT_REF_ACL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]419 patflags = 0;
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]420 is_loaded = 0;
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]421 unique_id = -1;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]422 while (**args == '-') {
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]423 if (strcmp(*args, "-i") == 0)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]424 patflags |= PAT_MF_IGNORE_CASE;
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]425 else if (strcmp(*args, "-n") == 0)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]426 patflags |= PAT_MF_NO_DNS;
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]427 else if (strcmp(*args, "-u") == 0) {
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]428 unique_id = strtol(args[1], &error, 10);
429 if (*error != '\0') {
430 memprintf(err, "the argument of -u must be an integer");
431 goto out_free_expr;
432 }
433
434 /* Check if this id is really unique. */
435 if (pat_ref_lookupid(unique_id)) {
436 memprintf(err, "the id is already used");
437 goto out_free_expr;
438 }
439
440 args++;
441 }
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]442 else if (strcmp(*args, "-f") == 0) {
Thierry FOURNIERd163e1c2013-11-28 11:41:23 +0100[diff] [blame]443 if (!expr->pat.parse) {
Willy Tarreau9987ea92013-06-11 21:09:06 +0200[diff] [blame]444 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]445 goto out_free_expr;
446 }
447
Christopher Faulet54ceb042017-06-14 14:41:33 +0200[diff] [blame]448 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]449 goto out_free_expr;
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]450 is_loaded = 1;
Willy Tarreau5adeda12013-03-31 22:13:34 +0200[diff] [blame]451 args++;
452 }
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]453 else if (strcmp(*args, "-m") == 0) {
Willy Tarreau5adeda12013-03-31 22:13:34 +0200[diff] [blame]454 int idx;
455
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]456 if (is_loaded) {
Willy Tarreau5adeda12013-03-31 22:13:34 +0200[diff] [blame]457 memprintf(err, "'-m' must only be specified before patterns and files in parsing ACL expression");
458 goto out_free_expr;
459 }
460
Willy Tarreau6f8fe312013-11-28 22:24:25 +0100[diff] [blame]461 idx = pat_find_match_name(args[1]);
Willy Tarreau5adeda12013-03-31 22:13:34 +0200[diff] [blame]462 if (idx < 0) {
463 memprintf(err, "unknown matching method '%s' when parsing ACL expression", args[1]);
464 goto out_free_expr;
465 }
466
467 /* 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]468 if (idx != PAT_MATCH_FOUND && !sample_casts[cur_type][pat_match_types[idx]]) {
Willy Tarreau93fddf12013-03-31 22:59:32 +0200[diff] [blame]469 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]470 goto out_free_expr;
471 }
Thierry FOURNIERe3ded592013-12-06 15:36:54 +0100[diff] [blame]472 expr->pat.parse = pat_parse_fcts[idx];
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]473 expr->pat.index = pat_index_fcts[idx];
Thierry FOURNIERe3ded592013-12-06 15:36:54 +0100[diff] [blame]474 expr->pat.match = pat_match_fcts[idx];
Thierry FOURNIERb1136502014-01-15 11:38:49 +0100[diff] [blame]475 expr->pat.delete = pat_delete_fcts[idx];
Thierry FOURNIER6f7203d2014-01-14 16:24:51 +0100[diff] [blame]476 expr->pat.prune = pat_prune_fcts[idx];
Thierry FOURNIER5d344082014-01-27 14:19:53 +0100[diff] [blame]477 expr->pat.expect_type = pat_match_types[idx];
Willy Tarreau2b5285d2010-05-09 23:45:24 +0200[diff] [blame]478 args++;
479 }
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]480 else if (strcmp(*args, "-M") == 0) {
Christopher Faulet54ceb042017-06-14 14:41:33 +0200[diff] [blame]481 refflags |= PAT_REF_MAP;
Thierry FOURNIER9860c412014-01-29 14:23:29 +0100[diff] [blame]482 load_as_map = 1;
483 }
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]484 else if (strcmp(*args, "--") == 0) {
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]485 args++;
486 break;
487 }
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]488 else {
489 memprintf(err, "'%s' is not a valid ACL option. Please use '--' before any pattern beginning with a '-'", args[0]);
490 goto out_free_expr;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]491 break;
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]492 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]493 args++;
494 }
495
Thierry FOURNIERd163e1c2013-11-28 11:41:23 +0100[diff] [blame]496 if (!expr->pat.parse) {
Willy Tarreau9987ea92013-06-11 21:09:06 +0200[diff] [blame]497 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]498 goto out_free_expr;
499 }
500
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]501 /* Create displayed reference */
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200[diff] [blame]502 snprintf(trash.area, trash.size, "acl '%s' file '%s' line %d",
503 expr->kw, file, line);
504 trash.area[trash.size - 1] = '\0';
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]505
Ilya Shipitsin6fb0f212020-04-02 15:25:26 +0500[diff] [blame]506 /* Create new pattern reference. */
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200[diff] [blame]507 ref = pat_ref_newid(unique_id, trash.area, PAT_REF_ACL);
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]508 if (!ref) {
509 memprintf(err, "memory error");
510 goto out_free_expr;
511 }
512
513 /* Create new pattern expression associated to this reference. */
Emeric Brun7d27f3c2017-07-03 17:54:23 +0200[diff] [blame]514 pattern_expr = pattern_new_expr(&expr->pat, ref, patflags, err, NULL);
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]515 if (!pattern_expr)
516 goto out_free_expr;
517
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]518 /* now parse all patterns */
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]519 while (**args) {
520 arg = *args;
521
522 /* Compatibility layer. Each pattern can parse only one string per pattern,
523 * but the pat_parser_int() and pat_parse_dotted_ver() parsers were need
Ilya Shipitsin6fb0f212020-04-02 15:25:26 +0500[diff] [blame]524 * optionally two operators. The first operator is the match method: eq,
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]525 * le, lt, ge and gt. pat_parse_int() and pat_parse_dotted_ver() functions
526 * can have a compatibility syntax based on ranges:
527 *
528 * pat_parse_int():
529 *
530 * "eq x" -> "x" or "x:x"
531 * "le x" -> ":x"
532 * "lt x" -> ":y" (with y = x - 1)
533 * "ge x" -> "x:"
534 * "gt x" -> "y:" (with y = x + 1)
535 *
536 * pat_parse_dotted_ver():
537 *
538 * "eq x.y" -> "x.y" or "x.y:x.y"
539 * "le x.y" -> ":x.y"
540 * "lt x.y" -> ":w.z" (with w.z = x.y - 1)
541 * "ge x.y" -> "x.y:"
542 * "gt x.y" -> "w.z:" (with w.z = x.y + 1)
543 *
544 * If y is not present, assume that is "0".
545 *
546 * The syntax eq, le, lt, ge and gt are proper to the acl syntax. The
547 * following block of code detect the operator, and rewrite each value
548 * in parsable string.
549 */
550 if (expr->pat.parse == pat_parse_int ||
551 expr->pat.parse == pat_parse_dotted_ver) {
552 /* Check for operator. If the argument is operator, memorise it and
553 * continue to the next argument.
554 */
555 op = get_std_op(arg);
556 if (op != -1) {
557 operator = op;
558 args++;
559 continue;
560 }
561
562 /* Check if the pattern contain ':' or '-' character. */
563 contain_colon = (strchr(arg, ':') || strchr(arg, '-'));
564
565 /* If the pattern contain ':' or '-' character, give it to the parser as is.
566 * If no contain ':' and operator is STD_OP_EQ, give it to the parser as is.
567 * In other case, try to convert the value according with the operator.
568 */
569 if (!contain_colon && operator != STD_OP_EQ) {
570 /* Search '.' separator. */
571 dot = strchr(arg, '.');
572 if (!dot) {
573 have_dot = 0;
574 minor = 0;
575 dot = arg + strlen(arg);
576 }
577 else
578 have_dot = 1;
579
580 /* convert the integer minor part for the pat_parse_dotted_ver() function. */
581 if (expr->pat.parse == pat_parse_dotted_ver && have_dot) {
582 if (strl2llrc(dot+1, strlen(dot+1), &minor) != 0) {
583 memprintf(err, "'%s' is neither a number nor a supported operator", arg);
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]584 goto out_free_expr;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]585 }
586 if (minor >= 65536) {
587 memprintf(err, "'%s' contains too large a minor value", arg);
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]588 goto out_free_expr;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]589 }
590 }
591
592 /* convert the integer value for the pat_parse_int() function, and the
593 * integer major part for the pat_parse_dotted_ver() function.
594 */
595 if (strl2llrc(arg, dot - arg, &value) != 0) {
596 memprintf(err, "'%s' is neither a number nor a supported operator", 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 if (expr->pat.parse == pat_parse_dotted_ver) {
600 if (value >= 65536) {
601 memprintf(err, "'%s' contains too large a major value", arg);
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]602 goto out_free_expr;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]603 }
604 value = (value << 16) | (minor & 0xffff);
605 }
606
607 switch (operator) {
608
609 case STD_OP_EQ: /* this case is not possible. */
610 memprintf(err, "internal error");
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]611 goto out_free_expr;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]612
613 case STD_OP_GT:
614 value++; /* gt = ge + 1 */
615
616 case STD_OP_GE:
617 if (expr->pat.parse == pat_parse_int)
618 snprintf(buffer, NB_LLMAX_STR+NB_LLMAX_STR+2, "%lld:", value);
619 else
620 snprintf(buffer, NB_LLMAX_STR+NB_LLMAX_STR+2, "%lld.%lld:",
621 value >> 16, value & 0xffff);
622 arg = buffer;
623 break;
624
625 case STD_OP_LT:
626 value--; /* lt = le - 1 */
627
628 case STD_OP_LE:
629 if (expr->pat.parse == pat_parse_int)
630 snprintf(buffer, NB_LLMAX_STR+NB_LLMAX_STR+2, ":%lld", value);
631 else
632 snprintf(buffer, NB_LLMAX_STR+NB_LLMAX_STR+2, ":%lld.%lld",
633 value >> 16, value & 0xffff);
634 arg = buffer;
635 break;
636 }
637 }
638 }
639
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]640 /* Add sample to the reference, and try to compile it fior each pattern
641 * using this value.
642 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]643 if (!pat_ref_add(ref, arg, NULL, err))
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]644 goto out_free_expr;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]645 args++;
646 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]647
648 return expr;
649
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]650 out_free_expr:
651 prune_acl_expr(expr);
652 free(expr);
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]653 out_free_smp:
Christopher Faulet361935a2019-09-13 09:50:15 +0200[diff] [blame]654 free(ckw);
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]655 free(smp);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]656 out_return:
657 return NULL;
658}
659
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200[diff] [blame]660/* Purge everything in the acl <acl>, then return <acl>. */
661struct acl *prune_acl(struct acl *acl) {
662
663 struct acl_expr *expr, *exprb;
664
665 free(acl->name);
666
667 list_for_each_entry_safe(expr, exprb, &acl->expr, list) {
668 LIST_DEL(&expr->list);
669 prune_acl_expr(expr);
670 free(expr);
671 }
672
673 return acl;
674}
675
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]676/* Parse an ACL with the name starting at <args>[0], and with a list of already
677 * 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]678 * 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]679 * an anonymous one and it won't be merged with any other one. If <err> is not
680 * NULL, it will be filled with an appropriate error. This pointer must be
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]681 * freeable or NULL. <al> is the arg_list serving as a head for unresolved
682 * dependencies.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]683 *
684 * args syntax: <aclname> <acl_expr>
685 */
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]686struct acl *parse_acl(const char **args, struct list *known_acl, char **err, struct arg_list *al,
687 const char *file, int line)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]688{
689 __label__ out_return, out_free_acl_expr, out_free_name;
690 struct acl *cur_acl;
691 struct acl_expr *acl_expr;
692 char *name;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]693 const char *pos;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]694
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]695 if (**args && (pos = invalid_char(*args))) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]696 memprintf(err, "invalid character in ACL name : '%c'", *pos);
Willy Tarreau2e74c3f2007-12-02 18:45:09 +0100[diff] [blame]697 goto out_return;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]698 }
Willy Tarreau2e74c3f2007-12-02 18:45:09 +0100[diff] [blame]699
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]700 acl_expr = parse_acl_expr(args + 1, err, al, file, line);
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]701 if (!acl_expr) {
702 /* parse_acl_expr will have filled <err> here */
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]703 goto out_return;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]704 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]705
Willy Tarreau404e8ab2009-07-26 19:40:40 +0200[diff] [blame]706 /* Check for args beginning with an opening parenthesis just after the
707 * subject, as this is almost certainly a typo. Right now we can only
708 * emit a warning, so let's do so.
709 */
Krzysztof Piotr Oledzki4cdd8312009-10-05 00:23:35 +0200[diff] [blame]710 if (!strchr(args[1], '(') && *args[2] == '(')
Christopher Faulet767a84b2017-11-24 16:50:31 +0100[diff] [blame]711 ha_warning("parsing acl '%s' :\n"
712 " matching '%s' for pattern '%s' is likely a mistake and probably\n"
713 " not what you want. Maybe you need to remove the extraneous space before '('.\n"
714 " If you are really sure this is not an error, please insert '--' between the\n"
715 " match and the pattern to make this warning message disappear.\n",
716 args[0], args[1], args[2]);
Willy Tarreau404e8ab2009-07-26 19:40:40 +0200[diff] [blame]717
Willy Tarreau2a56c5e2010-03-15 16:13:29 +0100[diff] [blame]718 if (*args[0])
719 cur_acl = find_acl_by_name(args[0], known_acl);
720 else
721 cur_acl = NULL;
722
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]723 if (!cur_acl) {
724 name = strdup(args[0]);
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]725 if (!name) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]726 memprintf(err, "out of memory when parsing ACL");
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]727 goto out_free_acl_expr;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]728 }
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]729 cur_acl = calloc(1, sizeof(*cur_acl));
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]730 if (cur_acl == NULL) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]731 memprintf(err, "out of memory when parsing ACL");
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]732 goto out_free_name;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]733 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]734
735 LIST_INIT(&cur_acl->expr);
736 LIST_ADDQ(known_acl, &cur_acl->list);
737 cur_acl->name = name;
738 }
739
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]740 /* We want to know what features the ACL needs (typically HTTP parsing),
741 * and where it may be used. If an ACL relies on multiple matches, it is
742 * OK if at least one of them may match in the context where it is used.
743 */
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]744 cur_acl->use |= acl_expr->smp->fetch->use;
745 cur_acl->val |= acl_expr->smp->fetch->val;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]746 LIST_ADDQ(&cur_acl->expr, &acl_expr->list);
747 return cur_acl;
748
749 out_free_name:
750 free(name);
751 out_free_acl_expr:
752 prune_acl_expr(acl_expr);
753 free(acl_expr);
754 out_return:
755 return NULL;
756}
757
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]758/* Some useful ACLs provided by default. Only those used are allocated. */
759
760const struct {
761 const char *name;
762 const char *expr[4]; /* put enough for longest expression */
763} default_acl_list[] = {
Willy Tarreau58393e12008-07-20 10:39:22 +0200[diff] [blame]764 { .name = "TRUE", .expr = {"always_true",""}},
765 { .name = "FALSE", .expr = {"always_false",""}},
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]766 { .name = "LOCALHOST", .expr = {"src","127.0.0.1/8",""}},
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]767 { .name = "HTTP", .expr = {"req_proto_http",""}},
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]768 { .name = "HTTP_1.0", .expr = {"req_ver","1.0",""}},
769 { .name = "HTTP_1.1", .expr = {"req_ver","1.1",""}},
770 { .name = "METH_CONNECT", .expr = {"method","CONNECT",""}},
Daniel Schneller9ff96c72016-04-11 17:45:29 +0200[diff] [blame]771 { .name = "METH_DELETE", .expr = {"method","DELETE",""}},
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]772 { .name = "METH_GET", .expr = {"method","GET","HEAD",""}},
773 { .name = "METH_HEAD", .expr = {"method","HEAD",""}},
774 { .name = "METH_OPTIONS", .expr = {"method","OPTIONS",""}},
775 { .name = "METH_POST", .expr = {"method","POST",""}},
Daniel Schneller9ff96c72016-04-11 17:45:29 +0200[diff] [blame]776 { .name = "METH_PUT", .expr = {"method","PUT",""}},
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]777 { .name = "METH_TRACE", .expr = {"method","TRACE",""}},
778 { .name = "HTTP_URL_ABS", .expr = {"url_reg","^[^/:]*://",""}},
779 { .name = "HTTP_URL_SLASH", .expr = {"url_beg","/",""}},
780 { .name = "HTTP_URL_STAR", .expr = {"url","*",""}},
781 { .name = "HTTP_CONTENT", .expr = {"hdr_val(content-length)","gt","0",""}},
Emeric Brunbede3d02009-06-30 17:54:00 +0200[diff] [blame]782 { .name = "RDP_COOKIE", .expr = {"req_rdp_cookie_cnt","gt","0",""}},
Willy Tarreauc6317702008-07-20 09:29:50 +0200[diff] [blame]783 { .name = "REQ_CONTENT", .expr = {"req_len","gt","0",""}},
Willy Tarreaub6fb4202008-07-20 11:18:28 +0200[diff] [blame]784 { .name = "WAIT_END", .expr = {"wait_end",""}},
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]785 { .name = NULL, .expr = {""}}
786};
787
788/* Find a default ACL from the default_acl list, compile it and return it.
789 * If the ACL is not found, NULL is returned. In theory, it cannot fail,
790 * except when default ACLs are broken, in which case it will return NULL.
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]791 * If <known_acl> is not NULL, the ACL will be queued at its tail. If <err> is
792 * 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]793 * pointer must be freeable or NULL. <al> is an arg_list serving as a list head
794 * to report missing dependencies.
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]795 */
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]796static struct acl *find_acl_default(const char *acl_name, struct list *known_acl,
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]797 char **err, struct arg_list *al,
798 const char *file, int line)
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]799{
800 __label__ out_return, out_free_acl_expr, out_free_name;
801 struct acl *cur_acl;
802 struct acl_expr *acl_expr;
803 char *name;
804 int index;
805
806 for (index = 0; default_acl_list[index].name != NULL; index++) {
807 if (strcmp(acl_name, default_acl_list[index].name) == 0)
808 break;
809 }
810
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]811 if (default_acl_list[index].name == NULL) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]812 memprintf(err, "no such ACL : '%s'", acl_name);
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]813 return NULL;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]814 }
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]815
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]816 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]817 if (!acl_expr) {
818 /* parse_acl_expr must have filled err here */
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]819 goto out_return;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]820 }
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]821
822 name = strdup(acl_name);
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]823 if (!name) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]824 memprintf(err, "out of memory when building default ACL '%s'", acl_name);
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]825 goto out_free_acl_expr;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]826 }
827
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]828 cur_acl = calloc(1, sizeof(*cur_acl));
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]829 if (cur_acl == NULL) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]830 memprintf(err, "out of memory when building default ACL '%s'", acl_name);
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]831 goto out_free_name;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]832 }
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]833
834 cur_acl->name = name;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]835 cur_acl->use |= acl_expr->smp->fetch->use;
836 cur_acl->val |= acl_expr->smp->fetch->val;
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]837 LIST_INIT(&cur_acl->expr);
838 LIST_ADDQ(&cur_acl->expr, &acl_expr->list);
839 if (known_acl)
840 LIST_ADDQ(known_acl, &cur_acl->list);
841
842 return cur_acl;
843
844 out_free_name:
845 free(name);
846 out_free_acl_expr:
847 prune_acl_expr(acl_expr);
848 free(acl_expr);
849 out_return:
850 return NULL;
851}
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]852
853/* Purge everything in the acl_cond <cond>, then return <cond>. */
854struct acl_cond *prune_acl_cond(struct acl_cond *cond)
855{
856 struct acl_term_suite *suite, *tmp_suite;
857 struct acl_term *term, *tmp_term;
858
859 /* iterate through all term suites and free all terms and all suites */
860 list_for_each_entry_safe(suite, tmp_suite, &cond->suites, list) {
861 list_for_each_entry_safe(term, tmp_term, &suite->terms, list)
862 free(term);
863 free(suite);
864 }
865 return cond;
866}
867
868/* Parse an ACL condition starting at <args>[0], relying on a list of already
869 * known ACLs passed in <known_acl>. The new condition is returned (or NULL in
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]870 * case of low memory). Supports multiple conditions separated by "or". If
871 * <err> is not NULL, it will be filled with a pointer to an error message in
872 * case of error, that the caller is responsible for freeing. The initial
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]873 * location must either be freeable or NULL. The list <al> serves as a list head
874 * for unresolved dependencies.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]875 */
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]876struct acl_cond *parse_acl_cond(const char **args, struct list *known_acl,
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]877 enum acl_cond_pol pol, char **err, struct arg_list *al,
878 const char *file, int line)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]879{
880 __label__ out_return, out_free_suite, out_free_term;
Willy Tarreau74b98a82007-06-16 19:35:18 +0200[diff] [blame]881 int arg, neg;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]882 const char *word;
883 struct acl *cur_acl;
884 struct acl_term *cur_term;
885 struct acl_term_suite *cur_suite;
886 struct acl_cond *cond;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]887 unsigned int suite_val;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]888
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]889 cond = calloc(1, sizeof(*cond));
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]890 if (cond == NULL) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]891 memprintf(err, "out of memory when parsing condition");
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]892 goto out_return;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]893 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]894
895 LIST_INIT(&cond->list);
896 LIST_INIT(&cond->suites);
897 cond->pol = pol;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]898 cond->val = 0;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]899
900 cur_suite = NULL;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]901 suite_val = ~0U;
Willy Tarreau74b98a82007-06-16 19:35:18 +0200[diff] [blame]902 neg = 0;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]903 for (arg = 0; *args[arg]; arg++) {
904 word = args[arg];
905
906 /* remove as many exclamation marks as we can */
907 while (*word == '!') {
908 neg = !neg;
909 word++;
910 }
911
912 /* an empty word is allowed because we cannot force the user to
913 * always think about not leaving exclamation marks alone.
914 */
915 if (!*word)
916 continue;
917
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]918 if (strcasecmp(word, "or") == 0 || strcmp(word, "||") == 0) {
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]919 /* new term suite */
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]920 cond->val |= suite_val;
921 suite_val = ~0U;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]922 cur_suite = NULL;
923 neg = 0;
924 continue;
925 }
926
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]927 if (strcmp(word, "{") == 0) {
928 /* we may have a complete ACL expression between two braces,
929 * find the last one.
930 */
931 int arg_end = arg + 1;
932 const char **args_new;
933
934 while (*args[arg_end] && strcmp(args[arg_end], "}") != 0)
935 arg_end++;
936
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]937 if (!*args[arg_end]) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]938 memprintf(err, "missing closing '}' in condition");
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]939 goto out_free_suite;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]940 }
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]941
942 args_new = calloc(1, (arg_end - arg + 1) * sizeof(*args_new));
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]943 if (!args_new) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]944 memprintf(err, "out of memory when parsing condition");
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]945 goto out_free_suite;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]946 }
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]947
Willy Tarreau2a56c5e2010-03-15 16:13:29 +0100[diff] [blame]948 args_new[0] = "";
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]949 memcpy(args_new + 1, args + arg + 1, (arg_end - arg) * sizeof(*args_new));
950 args_new[arg_end - arg] = "";
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]951 cur_acl = parse_acl(args_new, known_acl, err, al, file, line);
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]952 free(args_new);
953
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]954 if (!cur_acl) {
955 /* note that parse_acl() must have filled <err> here */
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]956 goto out_free_suite;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]957 }
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]958 arg = arg_end;
959 }
960 else {
961 /* search for <word> in the known ACL names. If we do not find
962 * it, let's look for it in the default ACLs, and if found, add
963 * it to the list of ACLs of this proxy. This makes it possible
964 * to override them.
965 */
966 cur_acl = find_acl_by_name(word, known_acl);
967 if (cur_acl == NULL) {
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]968 cur_acl = find_acl_default(word, known_acl, err, al, file, line);
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]969 if (cur_acl == NULL) {
970 /* note that find_acl_default() must have filled <err> here */
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]971 goto out_free_suite;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]972 }
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]973 }
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]974 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]975
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]976 cur_term = calloc(1, sizeof(*cur_term));
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]977 if (cur_term == NULL) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]978 memprintf(err, "out of memory when parsing condition");
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]979 goto out_free_suite;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]980 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]981
982 cur_term->acl = cur_acl;
983 cur_term->neg = neg;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]984
985 /* Here it is a bit complex. The acl_term_suite is a conjunction
986 * of many terms. It may only be used if all of its terms are
987 * usable at the same time. So the suite's validity domain is an
988 * AND between all ACL keywords' ones. But, the global condition
989 * is valid if at least one term suite is OK. So it's an OR between
990 * all of their validity domains. We could emit a warning as soon
991 * as suite_val is null because it means that the last ACL is not
992 * compatible with the previous ones. Let's remain simple for now.
993 */
994 cond->use |= cur_acl->use;
995 suite_val &= cur_acl->val;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]996
997 if (!cur_suite) {
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]998 cur_suite = calloc(1, sizeof(*cur_suite));
Willy Tarreauf678b7f2013-01-24 00:25:39 +0100[diff] [blame]999 if (cur_suite == NULL) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]1000 memprintf(err, "out of memory when parsing condition");
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1001 goto out_free_term;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1002 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1003 LIST_INIT(&cur_suite->terms);
1004 LIST_ADDQ(&cond->suites, &cur_suite->list);
1005 }
1006 LIST_ADDQ(&cur_suite->terms, &cur_term->list);
Willy Tarreau74b98a82007-06-16 19:35:18 +0200[diff] [blame]1007 neg = 0;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1008 }
1009
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1010 cond->val |= suite_val;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1011 return cond;
1012
1013 out_free_term:
1014 free(cur_term);
1015 out_free_suite:
1016 prune_acl_cond(cond);
1017 free(cond);
1018 out_return:
1019 return NULL;
1020}
1021
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1022/* Builds an ACL condition starting at the if/unless keyword. The complete
1023 * condition is returned. NULL is returned in case of error or if the first
1024 * word is neither "if" nor "unless". It automatically sets the file name and
Willy Tarreau25320b22013-03-24 07:22:08 +0100[diff] [blame]1025 * the line number in the condition for better error reporting, and sets the
1026 * HTTP intiailization requirements in the proxy. If <err> is not NULL, it will
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1027 * be filled with a pointer to an error message in case of error, that the
1028 * caller is responsible for freeing. The initial location must either be
1029 * freeable or NULL.
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1030 */
Christopher Faulet1b421ea2017-09-22 14:38:56 +0200[diff] [blame]1031struct acl_cond *build_acl_cond(const char *file, int line, struct list *known_acl,
1032 struct proxy *px, const char **args, char **err)
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1033{
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]1034 enum acl_cond_pol pol = ACL_COND_NONE;
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1035 struct acl_cond *cond = NULL;
1036
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1037 if (err)
1038 *err = NULL;
1039
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1040 if (!strcmp(*args, "if")) {
1041 pol = ACL_COND_IF;
1042 args++;
1043 }
1044 else if (!strcmp(*args, "unless")) {
1045 pol = ACL_COND_UNLESS;
1046 args++;
1047 }
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1048 else {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]1049 memprintf(err, "conditions must start with either 'if' or 'unless'");
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1050 return NULL;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1051 }
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1052
Christopher Faulet1b421ea2017-09-22 14:38:56 +0200[diff] [blame]1053 cond = parse_acl_cond(args, known_acl, pol, err, &px->conf.args, file, line);
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1054 if (!cond) {
1055 /* note that parse_acl_cond must have filled <err> here */
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1056 return NULL;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1057 }
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1058
1059 cond->file = file;
1060 cond->line = line;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1061 px->http_needed |= !!(cond->use & SMP_USE_HTTP_ANY);
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1062 return cond;
1063}
1064
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1065/* Execute condition <cond> and return either ACL_TEST_FAIL, ACL_TEST_MISS or
1066 * ACL_TEST_PASS depending on the test results. ACL_TEST_MISS may only be
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]1067 * returned if <opt> does not contain SMP_OPT_FINAL, indicating that incomplete
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1068 * data is being examined. The function automatically sets SMP_OPT_ITERATE. This
1069 * function only computes the condition, it does not apply the polarity required
1070 * 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]1071 *
1072 * res = acl_pass(res);
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1073 * if (res == ACL_TEST_MISS)
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1074 * return 0;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1075 * if (cond->pol == ACL_COND_UNLESS)
1076 * res = !res;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1077 */
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]1078enum 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]1079{
1080 __label__ fetch_next;
1081 struct acl_term_suite *suite;
1082 struct acl_term *term;
1083 struct acl_expr *expr;
1084 struct acl *acl;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]1085 struct sample smp;
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]1086 enum acl_test_res acl_res, suite_res, cond_res;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1087
Willy Tarreau7a777ed2012-04-26 11:44:02 +0200[diff] [blame]1088 /* ACLs are iterated over all values, so let's always set the flag to
1089 * indicate this to the fetch functions.
1090 */
1091 opt |= SMP_OPT_ITERATE;
1092
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1093 /* We're doing a logical OR between conditions so we initialize to FAIL.
1094 * The MISS status is propagated down from the suites.
1095 */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1096 cond_res = ACL_TEST_FAIL;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1097 list_for_each_entry(suite, &cond->suites, list) {
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1098 /* Evaluate condition suite <suite>. We stop at the first term
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]1099 * which returns ACL_TEST_FAIL. The MISS status is still propagated
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1100 * in case of uncertainty in the result.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1101 */
1102
1103 /* we're doing a logical AND between terms, so we must set the
1104 * initial value to PASS.
1105 */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1106 suite_res = ACL_TEST_PASS;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1107 list_for_each_entry(term, &suite->terms, list) {
1108 acl = term->acl;
1109
1110 /* FIXME: use cache !
1111 * check acl->cache_idx for this.
1112 */
1113
1114 /* ACL result not cached. Let's scan all the expressions
1115 * and use the first one to match.
1116 */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1117 acl_res = ACL_TEST_FAIL;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1118 list_for_each_entry(expr, &acl->expr, list) {
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]1119 /* we need to reset context and flags */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]1120 memset(&smp, 0, sizeof(smp));
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1121 fetch_next:
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]1122 if (!sample_process(px, sess, strm, opt, expr->smp, &smp)) {
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1123 /* maybe we could not fetch because of missing data */
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]1124 if (smp.flags & SMP_F_MAY_CHANGE && !(opt & SMP_OPT_FINAL))
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1125 acl_res |= ACL_TEST_MISS;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1126 continue;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1127 }
Willy Tarreauc4262962010-05-10 23:42:40 +0200[diff] [blame]1128
Thierry FOURNIER1794fdf2014-01-17 15:25:13 +0100[diff] [blame]1129 acl_res |= pat2acl(pattern_exec_match(&expr->pat, &smp, 0));
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1130 /*
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1131 * OK now acl_res holds the result of this expression
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1132 * as one of ACL_TEST_FAIL, ACL_TEST_MISS or ACL_TEST_PASS.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1133 *
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1134 * Then if (!MISS) we can cache the result, and put
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]1135 * (smp.flags & SMP_F_VOLATILE) in the cache flags.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1136 *
1137 * FIXME: implement cache.
1138 *
1139 */
1140
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1141 /* we're ORing these terms, so a single PASS is enough */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1142 if (acl_res == ACL_TEST_PASS)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1143 break;
1144
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]1145 if (smp.flags & SMP_F_NOT_LAST)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1146 goto fetch_next;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1147
1148 /* sometimes we know the fetched data is subject to change
1149 * later and give another chance for a new match (eg: request
1150 * size, time, ...)
1151 */
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]1152 if (smp.flags & SMP_F_MAY_CHANGE && !(opt & SMP_OPT_FINAL))
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1153 acl_res |= ACL_TEST_MISS;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1154 }
1155 /*
1156 * Here we have the result of an ACL (cached or not).
1157 * ACLs are combined, negated or not, to form conditions.
1158 */
1159
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1160 if (term->neg)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1161 acl_res = acl_neg(acl_res);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1162
1163 suite_res &= acl_res;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1164
Willy Tarreau79c412b2013-10-30 19:30:32 +0100[diff] [blame]1165 /* we're ANDing these terms, so a single FAIL or MISS is enough */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1166 if (suite_res != ACL_TEST_PASS)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1167 break;
1168 }
1169 cond_res |= suite_res;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1170
1171 /* we're ORing these terms, so a single PASS is enough */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1172 if (cond_res == ACL_TEST_PASS)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1173 break;
1174 }
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1175 return cond_res;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1176}
1177
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1178/* Returns a pointer to the first ACL conflicting with usage at place <where>
1179 * which is one of the SMP_VAL_* bits indicating a check place, or NULL if
1180 * no conflict is found. Only full conflicts are detected (ACL is not usable).
1181 * Use the next function to check for useless keywords.
Willy Tarreaudd64f8d2008-07-27 22:02:32 +0200[diff] [blame]1182 */
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1183const struct acl *acl_cond_conflicts(const struct acl_cond *cond, unsigned int where)
Willy Tarreaudd64f8d2008-07-27 22:02:32 +0200[diff] [blame]1184{
1185 struct acl_term_suite *suite;
1186 struct acl_term *term;
1187 struct acl *acl;
1188
1189 list_for_each_entry(suite, &cond->suites, list) {
1190 list_for_each_entry(term, &suite->terms, list) {
1191 acl = term->acl;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1192 if (!(acl->val & where))
Willy Tarreaudd64f8d2008-07-27 22:02:32 +0200[diff] [blame]1193 return acl;
1194 }
1195 }
1196 return NULL;
1197}
1198
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1199/* Returns a pointer to the first ACL and its first keyword to conflict with
1200 * usage at place <where> which is one of the SMP_VAL_* bits indicating a check
1201 * place. Returns true if a conflict is found, with <acl> and <kw> set (if non
1202 * null), or false if not conflict is found. The first useless keyword is
1203 * returned.
1204 */
Willy Tarreau93fddf12013-03-31 22:59:32 +0200[diff] [blame]1205int 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]1206{
1207 struct acl_term_suite *suite;
1208 struct acl_term *term;
1209 struct acl_expr *expr;
1210
1211 list_for_each_entry(suite, &cond->suites, list) {
1212 list_for_each_entry(term, &suite->terms, list) {
1213 list_for_each_entry(expr, &term->acl->expr, list) {
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]1214 if (!(expr->smp->fetch->val & where)) {
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1215 if (acl)
1216 *acl = term->acl;
1217 if (kw)
1218 *kw = expr->kw;
1219 return 1;
1220 }
1221 }
1222 }
1223 }
1224 return 0;
1225}
1226
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1227/*
1228 * Find targets for userlist and groups in acl. Function returns the number
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]1229 * of errors or OK if everything is fine. It must be called only once sample
1230 * fetch arguments have been resolved (after smp_resolve_args()).
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1231 */
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]1232int acl_find_targets(struct proxy *p)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1233{
1234
1235 struct acl *acl;
1236 struct acl_expr *expr;
Thierry FOURNIER3ead5b92013-12-13 12:12:18 +0100[diff] [blame]1237 struct pattern_list *pattern;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1238 int cfgerr = 0;
Thierry FOURNIERc5959fd2014-01-20 14:29:33 +0100[diff] [blame]1239 struct pattern_expr_list *pexp;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1240
1241 list_for_each_entry(acl, &p->acl, list) {
1242 list_for_each_entry(expr, &acl->expr, list) {
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]1243 if (!strcmp(expr->kw, "http_auth_group")) {
1244 /* Note: the ARGT_USR argument may only have been resolved earlier
1245 * by smp_resolve_args().
1246 */
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]1247 if (expr->smp->arg_p->unresolved) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100[diff] [blame]1248 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]1249 p->id, *acl->name ? "" : "anonymous ", acl->name, expr->kw,
1250 expr->smp->arg_p->data.str.area);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]1251 cfgerr++;
Willy Tarreau496aa012012-06-01 10:38:29 +0200[diff] [blame]1252 continue;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1253 }
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1254
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]1255 if (LIST_ISEMPTY(&expr->pat.head)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100[diff] [blame]1256 ha_alert("proxy %s: acl %s %s(): no groups specified.\n",
1257 p->id, acl->name, expr->kw);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1258 cfgerr++;
1259 continue;
1260 }
1261
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]1262 /* For each pattern, check if the group exists. */
Thierry FOURNIERc5959fd2014-01-20 14:29:33 +0100[diff] [blame]1263 list_for_each_entry(pexp, &expr->pat.head, list) {
1264 if (LIST_ISEMPTY(&pexp->expr->patterns)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100[diff] [blame]1265 ha_alert("proxy %s: acl %s %s(): no groups specified.\n",
1266 p->id, acl->name, expr->kw);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1267 cfgerr++;
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]1268 continue;
1269 }
1270
Thierry FOURNIERc5959fd2014-01-20 14:29:33 +0100[diff] [blame]1271 list_for_each_entry(pattern, &pexp->expr->patterns, list) {
1272 /* this keyword only has one argument */
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]1273 if (!check_group(expr->smp->arg_p->data.usr, pattern->pat.ptr.str)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100[diff] [blame]1274 ha_alert("proxy %s: acl %s %s(): invalid group '%s'.\n",
1275 p->id, acl->name, expr->kw, pattern->pat.ptr.str);
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]1276 cfgerr++;
1277 }
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1278 }
1279 }
1280 }
1281 }
1282 }
1283
1284 return cfgerr;
1285}
Willy Tarreaudd64f8d2008-07-27 22:02:32 +0200[diff] [blame]1286
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]1287/* initializes ACLs by resolving the sample fetch names they rely upon.
1288 * Returns 0 on success, otherwise an error.
1289 */
1290int init_acl()
1291{
1292 int err = 0;
1293 int index;
1294 const char *name;
1295 struct acl_kw_list *kwl;
1296 struct sample_fetch *smp;
1297
1298 list_for_each_entry(kwl, &acl_keywords.list, list) {
1299 for (index = 0; kwl->kw[index].kw != NULL; index++) {
1300 name = kwl->kw[index].fetch_kw;
1301 if (!name)
1302 name = kwl->kw[index].kw;
1303
1304 smp = find_sample_fetch(name, strlen(name));
1305 if (!smp) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100[diff] [blame]1306 ha_alert("Critical internal error: ACL keyword '%s' relies on sample fetch '%s' which was not registered!\n",
1307 kwl->kw[index].kw, name);
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]1308 err++;
1309 continue;
1310 }
1311 kwl->kw[index].smp = smp;
1312 }
1313 }
1314 return err;
1315}
Willy Tarreaud4c33c82013-01-07 21:59:07 +0100[diff] [blame]1316
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1317/************************************************************************/
Willy Tarreaud4c33c82013-01-07 21:59:07 +0100[diff] [blame]1318/* All supported sample and ACL keywords must be declared here. */
1319/************************************************************************/
1320
1321/* Note: must not be declared <const> as its list will be overwritten.
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]1322 * Please take care of keeping this list alphabetically sorted.
1323 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]1324static struct acl_kw_list acl_kws = {ILH, {
Willy Tarreaud4c33c82013-01-07 21:59:07 +0100[diff] [blame]1325 { /* END */ },
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1326}};
1327
Willy Tarreau0108d902018-11-25 19:14:37 +0100[diff] [blame]1328INITCALL1(STG_REGISTER, acl_register_keywords, &acl_kws);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1329
1330/*
1331 * Local variables:
1332 * c-indent-level: 8
1333 * c-basic-offset: 8
1334 * End:
1335 */