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git01.mediatek.com / haproxy / 2359ff1de2dcb90e50b79731d9cfddebfb8576bc / . / src / acl.c
blob: 2ee4d5096008c5cef0bbfbc2c490dce078eee889 [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>
18#include <common/mini-clist.h>
19#include <common/standard.h>
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]20#include <common/uri_auth.h>
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]21
Willy Tarreau2b5285d2010-05-09 23:45:24 +0200[diff] [blame]22#include <types/global.h>
23
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]24#include <proto/acl.h>
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]25#include <proto/arg.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]26#include <proto/auth.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]27#include <proto/channel.h>
Willy Tarreau404e8ab2009-07-26 19:40:40 +0200[diff] [blame]28#include <proto/log.h>
Thierry FOURNIERed66c292013-11-28 11:05:19 +0100[diff] [blame]29#include <proto/pattern.h>
Willy Tarreau0b1cd942010-05-16 22:18:27 +0200[diff] [blame]30#include <proto/proxy.h>
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]31#include <proto/sample.h>
Willy Tarreaud28c3532012-04-19 19:28:33 +0200[diff] [blame]32#include <proto/stick_table.h>
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]33
Willy Tarreauc4262962010-05-10 23:42:40 +0200[diff] [blame]34#include <ebsttree.h>
35
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]36/* List head of all known ACL keywords */
37static struct acl_kw_list acl_keywords = {
38 .list = LIST_HEAD_INIT(acl_keywords.list)
39};
40
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]41/* input values are 0 or 3, output is the same */
Thierry FOURNIER1794fdf2014-01-17 15:25:13 +0100[diff] [blame]42static inline enum acl_test_res pat2acl(struct pattern *pat)
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]43{
Thierry FOURNIER1794fdf2014-01-17 15:25:13 +0100[diff] [blame]44 if (pat)
45 return ACL_TEST_PASS;
46 else
47 return ACL_TEST_FAIL;
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]48}
49
Willy Tarreaua5909832007-06-17 20:40:25 +0200[diff] [blame]50/*
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]51 * Registers the ACL keyword list <kwl> as a list of valid keywords for next
52 * parsing sessions.
53 */
54void acl_register_keywords(struct acl_kw_list *kwl)
55{
56 LIST_ADDQ(&acl_keywords.list, &kwl->list);
57}
58
59/*
60 * Unregisters the ACL keyword list <kwl> from the list of valid keywords.
61 */
62void acl_unregister_keywords(struct acl_kw_list *kwl)
63{
64 LIST_DEL(&kwl->list);
65 LIST_INIT(&kwl->list);
66}
67
68/* Return a pointer to the ACL <name> within the list starting at <head>, or
69 * NULL if not found.
70 */
71struct acl *find_acl_by_name(const char *name, struct list *head)
72{
73 struct acl *acl;
74 list_for_each_entry(acl, head, list) {
75 if (strcmp(acl->name, name) == 0)
76 return acl;
77 }
78 return NULL;
79}
80
81/* 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]82 * <kw> contains an opening parenthesis or a comma, only the left part of it is
83 * checked.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]84 */
85struct acl_keyword *find_acl_kw(const char *kw)
86{
87 int index;
88 const char *kwend;
89 struct acl_kw_list *kwl;
90
Willy Tarreau4bfa4222013-12-16 22:01:06 +0100[diff] [blame]91 kwend = kw;
92 while (*kwend && *kwend != '(' && *kwend != ',')
93 kwend++;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]94
95 list_for_each_entry(kwl, &acl_keywords.list, list) {
96 for (index = 0; kwl->kw[index].kw != NULL; index++) {
97 if ((strncmp(kwl->kw[index].kw, kw, kwend - kw) == 0) &&
98 kwl->kw[index].kw[kwend-kw] == 0)
99 return &kwl->kw[index];
100 }
101 }
102 return NULL;
103}
104
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]105static struct acl_expr *prune_acl_expr(struct acl_expr *expr)
106{
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]107 struct arg *arg;
108
Thierry FOURNIER6f7203d2014-01-14 16:24:51 +0100[diff] [blame]109 pattern_prune(&expr->pat);
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]110
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]111 for (arg = expr->smp->arg_p; arg; arg++) {
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]112 if (arg->type == ARGT_STOP)
113 break;
Willy Tarreau496aa012012-06-01 10:38:29 +0200[diff] [blame]114 if (arg->type == ARGT_STR || arg->unresolved) {
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]115 free(arg->data.str.str);
116 arg->data.str.str = NULL;
Willy Tarreau496aa012012-06-01 10:38:29 +0200[diff] [blame]117 arg->unresolved = 0;
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]118 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]119 }
120
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]121 if (expr->smp->arg_p != empty_arg_list)
122 free(expr->smp->arg_p);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]123 return expr;
124}
125
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]126/* Parse an ACL expression starting at <args>[0], and return it. If <err> is
127 * 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]128 * error. This pointer must be freeable or NULL. <al> is an arg_list serving
129 * as a list head to report missing dependencies.
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]130 *
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]131 * Right now, the only accepted syntax is :
132 * <subject> [<value>...]
133 */
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]134struct acl_expr *parse_acl_expr(const char **args, char **err, struct arg_list *al,
135 const char *file, int line)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]136{
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]137 __label__ out_return, out_free_expr;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]138 struct acl_expr *expr;
139 struct acl_keyword *aclkw;
Thierry FOURNIER7148ce62013-12-06 19:06:43 +0100[diff] [blame]140 int patflags;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]141 const char *arg;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]142 struct sample_expr *smp = NULL;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]143 int idx = 0;
144 char *ckw = NULL;
145 const char *begw;
146 const char *endw;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]147 const char *endt;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]148 int cur_type;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]149 int nbargs;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]150 int operator = STD_OP_EQ;
151 int op;
152 int contain_colon, have_dot;
153 const char *dot;
154 signed long long value, minor;
155 /* The following buffer contain two numbers, a ':' separator and the final \0. */
156 char buffer[NB_LLMAX_STR + 1 + NB_LLMAX_STR + 1];
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]157 int is_loaded;
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]158 int unique_id;
159 char *error;
160 struct pat_ref *ref;
161 struct pattern_expr *pattern_expr;
Thierry FOURNIER9860c412014-01-29 14:23:29 +0100[diff] [blame]162 int load_as_map = 0;
Willy Tarreau6f0ddca2014-08-29 17:36:40 +0200[diff] [blame]163 int acl_conv_found = 0;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]164
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]165 /* First, we look for an ACL keyword. And if we don't find one, then
166 * we look for a sample fetch expression starting with a sample fetch
167 * keyword.
Willy Tarreaubef91e72013-03-31 23:14:46 +0200[diff] [blame]168 */
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]169
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]170 al->ctx = ARGC_ACL; // to report errors while resolving args late
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]171 al->kw = *args;
172 al->conv = NULL;
173
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]174 aclkw = find_acl_kw(args[0]);
Willy Tarreau20490922014-03-17 18:04:27 +0100[diff] [blame]175 if (aclkw) {
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]176 /* OK we have a real ACL keyword */
Willy Tarreau9987ea92013-06-11 21:09:06 +0200[diff] [blame]177
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]178 /* build new sample expression for this ACL */
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]179 smp = calloc(1, sizeof(struct sample_expr));
180 if (!smp) {
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]181 memprintf(err, "out of memory when parsing ACL expression");
182 goto out_return;
183 }
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]184 LIST_INIT(&(smp->conv_exprs));
185 smp->fetch = aclkw->smp;
186 smp->arg_p = empty_arg_list;
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]187
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]188 /* look for the begining of the subject arguments */
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]189 for (arg = args[0]; *arg && *arg != '(' && *arg != ','; arg++);
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]190
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]191 endt = arg;
192 if (*endt == '(') {
193 /* look for the end of this term and skip the opening parenthesis */
194 endt = ++arg;
195 while (*endt && *endt != ')')
196 endt++;
197 if (*endt != ')') {
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]198 memprintf(err, "missing closing ')' after arguments to ACL keyword '%s'", aclkw->kw);
199 goto out_free_smp;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]200 }
201 }
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]202
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]203 /* At this point, we have :
204 * - args[0] : beginning of the keyword
205 * - arg : end of the keyword, first character not part of keyword
206 * nor the opening parenthesis (so first character of args
207 * if present).
208 * - endt : end of the term (=arg or last parenthesis if args are present)
209 */
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]210 nbargs = make_arg_list(arg, endt - arg, smp->fetch->arg_mask, &smp->arg_p,
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]211 err, NULL, NULL, al);
212 if (nbargs < 0) {
213 /* note that make_arg_list will have set <err> here */
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]214 memprintf(err, "ACL keyword '%s' : %s", aclkw->kw, *err);
215 goto out_free_smp;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]216 }
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]217
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]218 if (!smp->arg_p) {
219 smp->arg_p = empty_arg_list;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]220 }
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]221 else if (smp->fetch->val_args && !smp->fetch->val_args(smp->arg_p, err)) {
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]222 /* invalid keyword argument, error must have been
223 * set by val_args().
224 */
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]225 memprintf(err, "in argument to '%s', %s", aclkw->kw, *err);
226 goto out_free_smp;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]227 }
228 arg = endt;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]229
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]230 /* look for the begining of the converters list. Those directly attached
231 * to the ACL keyword are found just after <arg> which points to the comma.
Willy Tarreau6f0ddca2014-08-29 17:36:40 +0200[diff] [blame]232 * 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]233 * anymore but the one related to the converter's output type.
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]234 */
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]235 cur_type = smp->fetch->out_type;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]236 while (*arg) {
237 struct sample_conv *conv;
238 struct sample_conv_expr *conv_expr;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]239
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]240 if (*arg == ')') /* skip last closing parenthesis */
241 arg++;
242
243 if (*arg && *arg != ',') {
244 if (ckw)
245 memprintf(err, "ACL keyword '%s' : missing comma after conv keyword '%s'.",
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]246 aclkw->kw, ckw);
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]247 else
248 memprintf(err, "ACL keyword '%s' : missing comma after fetch keyword.",
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]249 aclkw->kw);
250 goto out_free_smp;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]251 }
Willy Tarreauae52f062012-04-26 12:13:35 +0200[diff] [blame]252
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]253 while (*arg == ',') /* then trailing commas */
254 arg++;
Willy Tarreau2e845be2012-10-19 19:49:09 +0200[diff] [blame]255
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]256 begw = arg; /* start of conv keyword */
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]257
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]258 if (!*begw)
259 /* none ? end of converters */
260 break;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]261
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]262 for (endw = begw; *endw && *endw != '(' && *endw != ','; endw++);
Willy Tarreau9ca69362013-10-22 19:10:06 +0200[diff] [blame]263
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]264 free(ckw);
265 ckw = my_strndup(begw, endw - begw);
Willy Tarreauf75d0082013-04-07 21:20:44 +0200[diff] [blame]266
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]267 conv = find_sample_conv(begw, endw - begw);
268 if (!conv) {
269 /* Unknown converter method */
270 memprintf(err, "ACL keyword '%s' : unknown conv method '%s'.",
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]271 aclkw->kw, ckw);
272 goto out_free_smp;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]273 }
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]274
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]275 arg = endw;
276 if (*arg == '(') {
277 /* look for the end of this term */
278 while (*arg && *arg != ')')
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]279 arg++;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]280 if (*arg != ')') {
281 memprintf(err, "ACL keyword '%s' : syntax error: missing ')' after conv keyword '%s'.",
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]282 aclkw->kw, ckw);
283 goto out_free_smp;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]284 }
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]285 }
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]286
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]287 if (conv->in_type >= SMP_TYPES || conv->out_type >= SMP_TYPES) {
288 memprintf(err, "ACL keyword '%s' : returns type of conv method '%s' is unknown.",
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]289 aclkw->kw, ckw);
290 goto out_free_smp;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]291 }
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]292
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]293 /* If impossible type conversion */
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]294 if (!sample_casts[cur_type][conv->in_type]) {
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]295 memprintf(err, "ACL keyword '%s' : conv method '%s' cannot be applied.",
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]296 aclkw->kw, ckw);
297 goto out_free_smp;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]298 }
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]299
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]300 cur_type = conv->out_type;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]301 conv_expr = calloc(1, sizeof(struct sample_conv_expr));
302 if (!conv_expr)
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]303 goto out_free_smp;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]304
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]305 LIST_ADDQ(&(smp->conv_exprs), &(conv_expr->list));
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]306 conv_expr->conv = conv;
Willy Tarreau6f0ddca2014-08-29 17:36:40 +0200[diff] [blame]307 acl_conv_found = 1;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]308
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]309 if (arg != endw) {
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]310 int err_arg;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]311
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]312 if (!conv->arg_mask) {
313 memprintf(err, "ACL keyword '%s' : conv method '%s' does not support any args.",
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]314 aclkw->kw, ckw);
315 goto out_free_smp;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]316 }
317
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]318 al->kw = smp->fetch->kw;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]319 al->conv = conv_expr->conv->kw;
Willy Tarreauadaddc22013-12-13 01:30:22 +0100[diff] [blame]320 if (make_arg_list(endw + 1, arg - endw - 1, conv->arg_mask, &conv_expr->arg_p, err, NULL, &err_arg, al) < 0) {
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]321 memprintf(err, "ACL keyword '%s' : invalid arg %d in conv method '%s' : %s.",
Willy Tarreauadaddc22013-12-13 01:30:22 +0100[diff] [blame]322 aclkw->kw, err_arg+1, ckw, *err);
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]323 goto out_free_smp;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]324 }
325
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]326 if (!conv_expr->arg_p)
327 conv_expr->arg_p = empty_arg_list;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]328
Thierry FOURNIEReeaa9512014-02-11 14:00:19 +0100[diff] [blame]329 if (conv->val_args && !conv->val_args(conv_expr->arg_p, conv, file, line, err)) {
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]330 memprintf(err, "ACL keyword '%s' : invalid args in conv method '%s' : %s.",
Willy Tarreauadaddc22013-12-13 01:30:22 +0100[diff] [blame]331 aclkw->kw, ckw, *err);
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]332 goto out_free_smp;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]333 }
334 }
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]335 else if (ARGM(conv->arg_mask)) {
336 memprintf(err, "ACL keyword '%s' : missing args for conv method '%s'.",
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]337 aclkw->kw, ckw);
338 goto out_free_smp;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]339 }
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]340 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]341 }
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]342 else {
343 /* This is not an ACL keyword, so we hope this is a sample fetch
344 * keyword that we're going to transparently use as an ACL. If
345 * so, we retrieve a completely parsed expression with args and
346 * convs already done.
347 */
Thierry FOURNIEReeaa9512014-02-11 14:00:19 +0100[diff] [blame]348 smp = sample_parse_expr((char **)args, &idx, file, line, err, al);
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]349 if (!smp) {
350 memprintf(err, "%s in ACL expression '%s'", *err, *args);
351 goto out_return;
352 }
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]353 cur_type = smp_expr_output_type(smp);
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]354 }
355
356 expr = (struct acl_expr *)calloc(1, sizeof(*expr));
357 if (!expr) {
358 memprintf(err, "out of memory when parsing ACL expression");
359 goto out_return;
360 }
361
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]362 pattern_init_head(&expr->pat);
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]363
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]364 expr->pat.expect_type = cur_type;
365 expr->smp = smp;
366 expr->kw = smp->fetch->kw;
367 smp = NULL; /* don't free it anymore */
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]368
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]369 if (aclkw && !acl_conv_found) {
370 expr->kw = aclkw->kw;
371 expr->pat.parse = aclkw->parse ? aclkw->parse : pat_parse_fcts[aclkw->match_type];
372 expr->pat.index = aclkw->index ? aclkw->index : pat_index_fcts[aclkw->match_type];
373 expr->pat.match = aclkw->match ? aclkw->match : pat_match_fcts[aclkw->match_type];
374 expr->pat.delete = aclkw->delete ? aclkw->delete : pat_delete_fcts[aclkw->match_type];
375 expr->pat.prune = aclkw->prune ? aclkw->prune : pat_prune_fcts[aclkw->match_type];
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]376 }
377
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]378 if (!expr->pat.parse) {
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]379 /* Parse/index/match functions depend on the expression type,
380 * so we have to map them now. Some types can be automatically
381 * converted.
382 */
383 switch (cur_type) {
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]384 case SMP_T_BOOL:
385 expr->pat.parse = pat_parse_fcts[PAT_MATCH_BOOL];
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]386 expr->pat.index = pat_index_fcts[PAT_MATCH_BOOL];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]387 expr->pat.match = pat_match_fcts[PAT_MATCH_BOOL];
Thierry FOURNIERb1136502014-01-15 11:38:49 +0100[diff] [blame]388 expr->pat.delete = pat_delete_fcts[PAT_MATCH_BOOL];
Thierry FOURNIER6f7203d2014-01-14 16:24:51 +0100[diff] [blame]389 expr->pat.prune = pat_prune_fcts[PAT_MATCH_BOOL];
Thierry FOURNIER5d344082014-01-27 14:19:53 +0100[diff] [blame]390 expr->pat.expect_type = pat_match_types[PAT_MATCH_BOOL];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]391 break;
392 case SMP_T_SINT:
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]393 expr->pat.parse = pat_parse_fcts[PAT_MATCH_INT];
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]394 expr->pat.index = pat_index_fcts[PAT_MATCH_INT];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]395 expr->pat.match = pat_match_fcts[PAT_MATCH_INT];
Thierry FOURNIERb1136502014-01-15 11:38:49 +0100[diff] [blame]396 expr->pat.delete = pat_delete_fcts[PAT_MATCH_INT];
Thierry FOURNIER6f7203d2014-01-14 16:24:51 +0100[diff] [blame]397 expr->pat.prune = pat_prune_fcts[PAT_MATCH_INT];
Thierry FOURNIER5d344082014-01-27 14:19:53 +0100[diff] [blame]398 expr->pat.expect_type = pat_match_types[PAT_MATCH_INT];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]399 break;
400 case SMP_T_IPV4:
401 case SMP_T_IPV6:
402 expr->pat.parse = pat_parse_fcts[PAT_MATCH_IP];
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]403 expr->pat.index = pat_index_fcts[PAT_MATCH_IP];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]404 expr->pat.match = pat_match_fcts[PAT_MATCH_IP];
Thierry FOURNIERb1136502014-01-15 11:38:49 +0100[diff] [blame]405 expr->pat.delete = pat_delete_fcts[PAT_MATCH_IP];
Thierry FOURNIER6f7203d2014-01-14 16:24:51 +0100[diff] [blame]406 expr->pat.prune = pat_prune_fcts[PAT_MATCH_IP];
Thierry FOURNIER5d344082014-01-27 14:19:53 +0100[diff] [blame]407 expr->pat.expect_type = pat_match_types[PAT_MATCH_IP];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]408 break;
Thierry FOURNIER9fefbd52014-05-11 15:15:00 +0200[diff] [blame]409 case SMP_T_STR:
410 expr->pat.parse = pat_parse_fcts[PAT_MATCH_STR];
411 expr->pat.index = pat_index_fcts[PAT_MATCH_STR];
412 expr->pat.match = pat_match_fcts[PAT_MATCH_STR];
413 expr->pat.delete = pat_delete_fcts[PAT_MATCH_STR];
414 expr->pat.prune = pat_prune_fcts[PAT_MATCH_STR];
415 expr->pat.expect_type = pat_match_types[PAT_MATCH_STR];
416 break;
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]417 }
418 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]419
Willy Tarreau3c3dfd52013-11-04 18:09:12 +0100[diff] [blame]420 /* Additional check to protect against common mistakes */
Thierry FOURNIERd163e1c2013-11-28 11:41:23 +0100[diff] [blame]421 if (expr->pat.parse && cur_type != SMP_T_BOOL && !*args[1]) {
Willy Tarreau3c3dfd52013-11-04 18:09:12 +0100[diff] [blame]422 Warning("parsing acl keyword '%s' :\n"
423 " no pattern to match against were provided, so this ACL will never match.\n"
424 " If this is what you intended, please add '--' to get rid of this warning.\n"
425 " If you intended to match only for existence, please use '-m found'.\n"
426 " If you wanted to force an int to match as a bool, please use '-m bool'.\n"
427 "\n",
428 args[0]);
429 }
430
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]431 args++;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]432
433 /* check for options before patterns. Supported options are :
434 * -i : ignore case for all patterns by default
435 * -f : read patterns from those files
Willy Tarreau5adeda12013-03-31 22:13:34 +0200[diff] [blame]436 * -m : force matching method (must be used before -f)
Thierry FOURNIER9860c412014-01-29 14:23:29 +0100[diff] [blame]437 * -M : load the file as map file
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]438 * -u : force the unique id of the acl
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]439 * -- : everything after this is not an option
440 */
441 patflags = 0;
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]442 is_loaded = 0;
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]443 unique_id = -1;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]444 while (**args == '-') {
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]445 if (strcmp(*args, "-i") == 0)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]446 patflags |= PAT_MF_IGNORE_CASE;
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]447 else if (strcmp(*args, "-n") == 0)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]448 patflags |= PAT_MF_NO_DNS;
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]449 else if (strcmp(*args, "-u") == 0) {
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]450 unique_id = strtol(args[1], &error, 10);
451 if (*error != '\0') {
452 memprintf(err, "the argument of -u must be an integer");
453 goto out_free_expr;
454 }
455
456 /* Check if this id is really unique. */
457 if (pat_ref_lookupid(unique_id)) {
458 memprintf(err, "the id is already used");
459 goto out_free_expr;
460 }
461
462 args++;
463 }
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]464 else if (strcmp(*args, "-f") == 0) {
Thierry FOURNIERd163e1c2013-11-28 11:41:23 +0100[diff] [blame]465 if (!expr->pat.parse) {
Willy Tarreau9987ea92013-06-11 21:09:06 +0200[diff] [blame]466 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]467 goto out_free_expr;
468 }
469
Thierry FOURNIER66eb9bf2014-02-11 16:19:46 +0100[diff] [blame]470 if (!pattern_read_from_file(&expr->pat, PAT_REF_ACL, args[1], patflags, load_as_map, err, file, line))
Willy Tarreau2b5285d2010-05-09 23:45:24 +0200[diff] [blame]471 goto out_free_expr;
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]472 is_loaded = 1;
Willy Tarreau5adeda12013-03-31 22:13:34 +0200[diff] [blame]473 args++;
474 }
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]475 else if (strcmp(*args, "-m") == 0) {
Willy Tarreau5adeda12013-03-31 22:13:34 +0200[diff] [blame]476 int idx;
477
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]478 if (is_loaded) {
Willy Tarreau5adeda12013-03-31 22:13:34 +0200[diff] [blame]479 memprintf(err, "'-m' must only be specified before patterns and files in parsing ACL expression");
480 goto out_free_expr;
481 }
482
Willy Tarreau6f8fe312013-11-28 22:24:25 +0100[diff] [blame]483 idx = pat_find_match_name(args[1]);
Willy Tarreau5adeda12013-03-31 22:13:34 +0200[diff] [blame]484 if (idx < 0) {
485 memprintf(err, "unknown matching method '%s' when parsing ACL expression", args[1]);
486 goto out_free_expr;
487 }
488
489 /* Note: -m found is always valid, bool/int are compatible, str/bin/reg/len are compatible */
Thierry FOURNIERe3ded592013-12-06 15:36:54 +0100[diff] [blame]490 if (!sample_casts[cur_type][pat_match_types[idx]]) {
Willy Tarreau93fddf12013-03-31 22:59:32 +0200[diff] [blame]491 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]492 goto out_free_expr;
493 }
Thierry FOURNIERe3ded592013-12-06 15:36:54 +0100[diff] [blame]494 expr->pat.parse = pat_parse_fcts[idx];
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]495 expr->pat.index = pat_index_fcts[idx];
Thierry FOURNIERe3ded592013-12-06 15:36:54 +0100[diff] [blame]496 expr->pat.match = pat_match_fcts[idx];
Thierry FOURNIERb1136502014-01-15 11:38:49 +0100[diff] [blame]497 expr->pat.delete = pat_delete_fcts[idx];
Thierry FOURNIER6f7203d2014-01-14 16:24:51 +0100[diff] [blame]498 expr->pat.prune = pat_prune_fcts[idx];
Thierry FOURNIER5d344082014-01-27 14:19:53 +0100[diff] [blame]499 expr->pat.expect_type = pat_match_types[idx];
Willy Tarreau2b5285d2010-05-09 23:45:24 +0200[diff] [blame]500 args++;
501 }
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]502 else if (strcmp(*args, "-M") == 0) {
Thierry FOURNIER9860c412014-01-29 14:23:29 +0100[diff] [blame]503 load_as_map = 1;
504 }
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]505 else if (strcmp(*args, "--") == 0) {
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]506 args++;
507 break;
508 }
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]509 else {
510 memprintf(err, "'%s' is not a valid ACL option. Please use '--' before any pattern beginning with a '-'", args[0]);
511 goto out_free_expr;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]512 break;
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]513 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]514 args++;
515 }
516
Thierry FOURNIERd163e1c2013-11-28 11:41:23 +0100[diff] [blame]517 if (!expr->pat.parse) {
Willy Tarreau9987ea92013-06-11 21:09:06 +0200[diff] [blame]518 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]519 goto out_free_expr;
520 }
521
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]522 /* Create displayed reference */
523 snprintf(trash.str, trash.size, "acl '%s' file '%s' line %d", expr->kw, file, line);
524 trash.str[trash.size - 1] = '\0';
525
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]526 /* Create new patern reference. */
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]527 ref = pat_ref_newid(unique_id, trash.str, PAT_REF_ACL);
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]528 if (!ref) {
529 memprintf(err, "memory error");
530 goto out_free_expr;
531 }
532
533 /* Create new pattern expression associated to this reference. */
Thierry FOURNIER315ec422014-11-24 11:14:42 +0100[diff] [blame]534 pattern_expr = pattern_new_expr(&expr->pat, ref, err, NULL);
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]535 if (!pattern_expr)
536 goto out_free_expr;
537
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]538 /* Copy the pattern matching and indexing flags. */
539 pattern_expr->mflags = patflags;
540
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]541 /* now parse all patterns */
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]542 while (**args) {
543 arg = *args;
544
545 /* Compatibility layer. Each pattern can parse only one string per pattern,
546 * but the pat_parser_int() and pat_parse_dotted_ver() parsers were need
547 * optionnaly two operators. The first operator is the match method: eq,
548 * le, lt, ge and gt. pat_parse_int() and pat_parse_dotted_ver() functions
549 * can have a compatibility syntax based on ranges:
550 *
551 * pat_parse_int():
552 *
553 * "eq x" -> "x" or "x:x"
554 * "le x" -> ":x"
555 * "lt x" -> ":y" (with y = x - 1)
556 * "ge x" -> "x:"
557 * "gt x" -> "y:" (with y = x + 1)
558 *
559 * pat_parse_dotted_ver():
560 *
561 * "eq x.y" -> "x.y" or "x.y:x.y"
562 * "le x.y" -> ":x.y"
563 * "lt x.y" -> ":w.z" (with w.z = x.y - 1)
564 * "ge x.y" -> "x.y:"
565 * "gt x.y" -> "w.z:" (with w.z = x.y + 1)
566 *
567 * If y is not present, assume that is "0".
568 *
569 * The syntax eq, le, lt, ge and gt are proper to the acl syntax. The
570 * following block of code detect the operator, and rewrite each value
571 * in parsable string.
572 */
573 if (expr->pat.parse == pat_parse_int ||
574 expr->pat.parse == pat_parse_dotted_ver) {
575 /* Check for operator. If the argument is operator, memorise it and
576 * continue to the next argument.
577 */
578 op = get_std_op(arg);
579 if (op != -1) {
580 operator = op;
581 args++;
582 continue;
583 }
584
585 /* Check if the pattern contain ':' or '-' character. */
586 contain_colon = (strchr(arg, ':') || strchr(arg, '-'));
587
588 /* If the pattern contain ':' or '-' character, give it to the parser as is.
589 * If no contain ':' and operator is STD_OP_EQ, give it to the parser as is.
590 * In other case, try to convert the value according with the operator.
591 */
592 if (!contain_colon && operator != STD_OP_EQ) {
593 /* Search '.' separator. */
594 dot = strchr(arg, '.');
595 if (!dot) {
596 have_dot = 0;
597 minor = 0;
598 dot = arg + strlen(arg);
599 }
600 else
601 have_dot = 1;
602
603 /* convert the integer minor part for the pat_parse_dotted_ver() function. */
604 if (expr->pat.parse == pat_parse_dotted_ver && have_dot) {
605 if (strl2llrc(dot+1, strlen(dot+1), &minor) != 0) {
606 memprintf(err, "'%s' is neither a number nor a supported operator", arg);
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]607 goto out_free_expr;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]608 }
609 if (minor >= 65536) {
610 memprintf(err, "'%s' contains too large a minor value", arg);
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 }
614
615 /* convert the integer value for the pat_parse_int() function, and the
616 * integer major part for the pat_parse_dotted_ver() function.
617 */
618 if (strl2llrc(arg, dot - arg, &value) != 0) {
619 memprintf(err, "'%s' is neither a number nor a supported operator", arg);
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]620 goto out_free_expr;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]621 }
622 if (expr->pat.parse == pat_parse_dotted_ver) {
623 if (value >= 65536) {
624 memprintf(err, "'%s' contains too large a major value", arg);
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]625 goto out_free_expr;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]626 }
627 value = (value << 16) | (minor & 0xffff);
628 }
629
630 switch (operator) {
631
632 case STD_OP_EQ: /* this case is not possible. */
633 memprintf(err, "internal error");
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]634 goto out_free_expr;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]635
636 case STD_OP_GT:
637 value++; /* gt = ge + 1 */
638
639 case STD_OP_GE:
640 if (expr->pat.parse == pat_parse_int)
641 snprintf(buffer, NB_LLMAX_STR+NB_LLMAX_STR+2, "%lld:", value);
642 else
643 snprintf(buffer, NB_LLMAX_STR+NB_LLMAX_STR+2, "%lld.%lld:",
644 value >> 16, value & 0xffff);
645 arg = buffer;
646 break;
647
648 case STD_OP_LT:
649 value--; /* lt = le - 1 */
650
651 case STD_OP_LE:
652 if (expr->pat.parse == pat_parse_int)
653 snprintf(buffer, NB_LLMAX_STR+NB_LLMAX_STR+2, ":%lld", value);
654 else
655 snprintf(buffer, NB_LLMAX_STR+NB_LLMAX_STR+2, ":%lld.%lld",
656 value >> 16, value & 0xffff);
657 arg = buffer;
658 break;
659 }
660 }
661 }
662
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]663 /* Add sample to the reference, and try to compile it fior each pattern
664 * using this value.
665 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]666 if (!pat_ref_add(ref, arg, NULL, err))
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]667 goto out_free_expr;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]668 args++;
669 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]670
671 return expr;
672
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]673 out_free_expr:
674 prune_acl_expr(expr);
675 free(expr);
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]676 free(ckw);
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]677 out_free_smp:
678 free(smp);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]679 out_return:
680 return NULL;
681}
682
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200[diff] [blame]683/* Purge everything in the acl <acl>, then return <acl>. */
684struct acl *prune_acl(struct acl *acl) {
685
686 struct acl_expr *expr, *exprb;
687
688 free(acl->name);
689
690 list_for_each_entry_safe(expr, exprb, &acl->expr, list) {
691 LIST_DEL(&expr->list);
692 prune_acl_expr(expr);
693 free(expr);
694 }
695
696 return acl;
697}
698
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]699/* Parse an ACL with the name starting at <args>[0], and with a list of already
700 * 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]701 * 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]702 * an anonymous one and it won't be merged with any other one. If <err> is not
703 * NULL, it will be filled with an appropriate error. This pointer must be
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]704 * freeable or NULL. <al> is the arg_list serving as a head for unresolved
705 * dependencies.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]706 *
707 * args syntax: <aclname> <acl_expr>
708 */
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]709struct acl *parse_acl(const char **args, struct list *known_acl, char **err, struct arg_list *al,
710 const char *file, int line)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]711{
712 __label__ out_return, out_free_acl_expr, out_free_name;
713 struct acl *cur_acl;
714 struct acl_expr *acl_expr;
715 char *name;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]716 const char *pos;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]717
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]718 if (**args && (pos = invalid_char(*args))) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]719 memprintf(err, "invalid character in ACL name : '%c'", *pos);
Willy Tarreau2e74c3f2007-12-02 18:45:09 +0100[diff] [blame]720 goto out_return;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]721 }
Willy Tarreau2e74c3f2007-12-02 18:45:09 +0100[diff] [blame]722
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]723 acl_expr = parse_acl_expr(args + 1, err, al, file, line);
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]724 if (!acl_expr) {
725 /* parse_acl_expr will have filled <err> here */
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]726 goto out_return;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]727 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]728
Willy Tarreau404e8ab2009-07-26 19:40:40 +0200[diff] [blame]729 /* Check for args beginning with an opening parenthesis just after the
730 * subject, as this is almost certainly a typo. Right now we can only
731 * emit a warning, so let's do so.
732 */
Krzysztof Piotr Oledzki4cdd8312009-10-05 00:23:35 +0200[diff] [blame]733 if (!strchr(args[1], '(') && *args[2] == '(')
Willy Tarreau404e8ab2009-07-26 19:40:40 +0200[diff] [blame]734 Warning("parsing acl '%s' :\n"
735 " matching '%s' for pattern '%s' is likely a mistake and probably\n"
736 " not what you want. Maybe you need to remove the extraneous space before '('.\n"
737 " If you are really sure this is not an error, please insert '--' between the\n"
738 " match and the pattern to make this warning message disappear.\n",
739 args[0], args[1], args[2]);
740
Willy Tarreau2a56c5e2010-03-15 16:13:29 +0100[diff] [blame]741 if (*args[0])
742 cur_acl = find_acl_by_name(args[0], known_acl);
743 else
744 cur_acl = NULL;
745
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]746 if (!cur_acl) {
747 name = strdup(args[0]);
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]748 if (!name) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]749 memprintf(err, "out of memory when parsing ACL");
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]750 goto out_free_acl_expr;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]751 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]752 cur_acl = (struct acl *)calloc(1, sizeof(*cur_acl));
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]753 if (cur_acl == NULL) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]754 memprintf(err, "out of memory when parsing ACL");
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]755 goto out_free_name;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]756 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]757
758 LIST_INIT(&cur_acl->expr);
759 LIST_ADDQ(known_acl, &cur_acl->list);
760 cur_acl->name = name;
761 }
762
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]763 /* We want to know what features the ACL needs (typically HTTP parsing),
764 * and where it may be used. If an ACL relies on multiple matches, it is
765 * OK if at least one of them may match in the context where it is used.
766 */
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]767 cur_acl->use |= acl_expr->smp->fetch->use;
768 cur_acl->val |= acl_expr->smp->fetch->val;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]769 LIST_ADDQ(&cur_acl->expr, &acl_expr->list);
770 return cur_acl;
771
772 out_free_name:
773 free(name);
774 out_free_acl_expr:
775 prune_acl_expr(acl_expr);
776 free(acl_expr);
777 out_return:
778 return NULL;
779}
780
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]781/* Some useful ACLs provided by default. Only those used are allocated. */
782
783const struct {
784 const char *name;
785 const char *expr[4]; /* put enough for longest expression */
786} default_acl_list[] = {
Willy Tarreau58393e12008-07-20 10:39:22 +0200[diff] [blame]787 { .name = "TRUE", .expr = {"always_true",""}},
788 { .name = "FALSE", .expr = {"always_false",""}},
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]789 { .name = "LOCALHOST", .expr = {"src","127.0.0.1/8",""}},
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]790 { .name = "HTTP", .expr = {"req_proto_http",""}},
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]791 { .name = "HTTP_1.0", .expr = {"req_ver","1.0",""}},
792 { .name = "HTTP_1.1", .expr = {"req_ver","1.1",""}},
793 { .name = "METH_CONNECT", .expr = {"method","CONNECT",""}},
794 { .name = "METH_GET", .expr = {"method","GET","HEAD",""}},
795 { .name = "METH_HEAD", .expr = {"method","HEAD",""}},
796 { .name = "METH_OPTIONS", .expr = {"method","OPTIONS",""}},
797 { .name = "METH_POST", .expr = {"method","POST",""}},
798 { .name = "METH_TRACE", .expr = {"method","TRACE",""}},
799 { .name = "HTTP_URL_ABS", .expr = {"url_reg","^[^/:]*://",""}},
800 { .name = "HTTP_URL_SLASH", .expr = {"url_beg","/",""}},
801 { .name = "HTTP_URL_STAR", .expr = {"url","*",""}},
802 { .name = "HTTP_CONTENT", .expr = {"hdr_val(content-length)","gt","0",""}},
Emeric Brunbede3d02009-06-30 17:54:00 +0200[diff] [blame]803 { .name = "RDP_COOKIE", .expr = {"req_rdp_cookie_cnt","gt","0",""}},
Willy Tarreauc6317702008-07-20 09:29:50 +0200[diff] [blame]804 { .name = "REQ_CONTENT", .expr = {"req_len","gt","0",""}},
Willy Tarreaub6fb4202008-07-20 11:18:28 +0200[diff] [blame]805 { .name = "WAIT_END", .expr = {"wait_end",""}},
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]806 { .name = NULL, .expr = {""}}
807};
808
809/* Find a default ACL from the default_acl list, compile it and return it.
810 * If the ACL is not found, NULL is returned. In theory, it cannot fail,
811 * except when default ACLs are broken, in which case it will return NULL.
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]812 * If <known_acl> is not NULL, the ACL will be queued at its tail. If <err> is
813 * 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]814 * pointer must be freeable or NULL. <al> is an arg_list serving as a list head
815 * to report missing dependencies.
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]816 */
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]817static struct acl *find_acl_default(const char *acl_name, struct list *known_acl,
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]818 char **err, struct arg_list *al,
819 const char *file, int line)
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]820{
821 __label__ out_return, out_free_acl_expr, out_free_name;
822 struct acl *cur_acl;
823 struct acl_expr *acl_expr;
824 char *name;
825 int index;
826
827 for (index = 0; default_acl_list[index].name != NULL; index++) {
828 if (strcmp(acl_name, default_acl_list[index].name) == 0)
829 break;
830 }
831
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]832 if (default_acl_list[index].name == NULL) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]833 memprintf(err, "no such ACL : '%s'", acl_name);
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]834 return NULL;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]835 }
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]836
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]837 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]838 if (!acl_expr) {
839 /* parse_acl_expr must have filled err here */
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]840 goto out_return;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]841 }
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]842
843 name = strdup(acl_name);
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]844 if (!name) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]845 memprintf(err, "out of memory when building default ACL '%s'", acl_name);
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]846 goto out_free_acl_expr;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]847 }
848
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]849 cur_acl = (struct acl *)calloc(1, sizeof(*cur_acl));
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]850 if (cur_acl == NULL) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]851 memprintf(err, "out of memory when building default ACL '%s'", acl_name);
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]852 goto out_free_name;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]853 }
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]854
855 cur_acl->name = name;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]856 cur_acl->use |= acl_expr->smp->fetch->use;
857 cur_acl->val |= acl_expr->smp->fetch->val;
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]858 LIST_INIT(&cur_acl->expr);
859 LIST_ADDQ(&cur_acl->expr, &acl_expr->list);
860 if (known_acl)
861 LIST_ADDQ(known_acl, &cur_acl->list);
862
863 return cur_acl;
864
865 out_free_name:
866 free(name);
867 out_free_acl_expr:
868 prune_acl_expr(acl_expr);
869 free(acl_expr);
870 out_return:
871 return NULL;
872}
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]873
874/* Purge everything in the acl_cond <cond>, then return <cond>. */
875struct acl_cond *prune_acl_cond(struct acl_cond *cond)
876{
877 struct acl_term_suite *suite, *tmp_suite;
878 struct acl_term *term, *tmp_term;
879
880 /* iterate through all term suites and free all terms and all suites */
881 list_for_each_entry_safe(suite, tmp_suite, &cond->suites, list) {
882 list_for_each_entry_safe(term, tmp_term, &suite->terms, list)
883 free(term);
884 free(suite);
885 }
886 return cond;
887}
888
889/* Parse an ACL condition starting at <args>[0], relying on a list of already
890 * known ACLs passed in <known_acl>. The new condition is returned (or NULL in
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]891 * case of low memory). Supports multiple conditions separated by "or". If
892 * <err> is not NULL, it will be filled with a pointer to an error message in
893 * case of error, that the caller is responsible for freeing. The initial
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]894 * location must either be freeable or NULL. The list <al> serves as a list head
895 * for unresolved dependencies.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]896 */
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]897struct acl_cond *parse_acl_cond(const char **args, struct list *known_acl,
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]898 enum acl_cond_pol pol, char **err, struct arg_list *al,
899 const char *file, int line)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]900{
901 __label__ out_return, out_free_suite, out_free_term;
Willy Tarreau74b98a82007-06-16 19:35:18 +0200[diff] [blame]902 int arg, neg;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]903 const char *word;
904 struct acl *cur_acl;
905 struct acl_term *cur_term;
906 struct acl_term_suite *cur_suite;
907 struct acl_cond *cond;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]908 unsigned int suite_val;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]909
910 cond = (struct acl_cond *)calloc(1, sizeof(*cond));
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]911 if (cond == NULL) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]912 memprintf(err, "out of memory when parsing condition");
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]913 goto out_return;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]914 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]915
916 LIST_INIT(&cond->list);
917 LIST_INIT(&cond->suites);
918 cond->pol = pol;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]919 cond->val = 0;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]920
921 cur_suite = NULL;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]922 suite_val = ~0U;
Willy Tarreau74b98a82007-06-16 19:35:18 +0200[diff] [blame]923 neg = 0;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]924 for (arg = 0; *args[arg]; arg++) {
925 word = args[arg];
926
927 /* remove as many exclamation marks as we can */
928 while (*word == '!') {
929 neg = !neg;
930 word++;
931 }
932
933 /* an empty word is allowed because we cannot force the user to
934 * always think about not leaving exclamation marks alone.
935 */
936 if (!*word)
937 continue;
938
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]939 if (strcasecmp(word, "or") == 0 || strcmp(word, "||") == 0) {
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]940 /* new term suite */
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]941 cond->val |= suite_val;
942 suite_val = ~0U;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]943 cur_suite = NULL;
944 neg = 0;
945 continue;
946 }
947
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]948 if (strcmp(word, "{") == 0) {
949 /* we may have a complete ACL expression between two braces,
950 * find the last one.
951 */
952 int arg_end = arg + 1;
953 const char **args_new;
954
955 while (*args[arg_end] && strcmp(args[arg_end], "}") != 0)
956 arg_end++;
957
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]958 if (!*args[arg_end]) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]959 memprintf(err, "missing closing '}' in condition");
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]960 goto out_free_suite;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]961 }
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]962
963 args_new = calloc(1, (arg_end - arg + 1) * sizeof(*args_new));
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]964 if (!args_new) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]965 memprintf(err, "out of memory when parsing condition");
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]966 goto out_free_suite;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]967 }
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]968
Willy Tarreau2a56c5e2010-03-15 16:13:29 +0100[diff] [blame]969 args_new[0] = "";
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]970 memcpy(args_new + 1, args + arg + 1, (arg_end - arg) * sizeof(*args_new));
971 args_new[arg_end - arg] = "";
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]972 cur_acl = parse_acl(args_new, known_acl, err, al, file, line);
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]973 free(args_new);
974
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]975 if (!cur_acl) {
976 /* note that parse_acl() must have filled <err> here */
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]977 goto out_free_suite;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]978 }
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]979 word = args[arg + 1];
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]980 arg = arg_end;
981 }
982 else {
983 /* search for <word> in the known ACL names. If we do not find
984 * it, let's look for it in the default ACLs, and if found, add
985 * it to the list of ACLs of this proxy. This makes it possible
986 * to override them.
987 */
988 cur_acl = find_acl_by_name(word, known_acl);
989 if (cur_acl == NULL) {
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]990 cur_acl = find_acl_default(word, known_acl, err, al, file, line);
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]991 if (cur_acl == NULL) {
992 /* note that find_acl_default() must have filled <err> here */
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]993 goto out_free_suite;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]994 }
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]995 }
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]996 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]997
998 cur_term = (struct acl_term *)calloc(1, sizeof(*cur_term));
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]999 if (cur_term == 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_suite;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1002 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1003
1004 cur_term->acl = cur_acl;
1005 cur_term->neg = neg;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1006
1007 /* Here it is a bit complex. The acl_term_suite is a conjunction
1008 * of many terms. It may only be used if all of its terms are
1009 * usable at the same time. So the suite's validity domain is an
1010 * AND between all ACL keywords' ones. But, the global condition
1011 * is valid if at least one term suite is OK. So it's an OR between
1012 * all of their validity domains. We could emit a warning as soon
1013 * as suite_val is null because it means that the last ACL is not
1014 * compatible with the previous ones. Let's remain simple for now.
1015 */
1016 cond->use |= cur_acl->use;
1017 suite_val &= cur_acl->val;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1018
1019 if (!cur_suite) {
1020 cur_suite = (struct acl_term_suite *)calloc(1, sizeof(*cur_suite));
Willy Tarreauf678b7f2013-01-24 00:25:39 +0100[diff] [blame]1021 if (cur_suite == NULL) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]1022 memprintf(err, "out of memory when parsing condition");
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1023 goto out_free_term;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1024 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1025 LIST_INIT(&cur_suite->terms);
1026 LIST_ADDQ(&cond->suites, &cur_suite->list);
1027 }
1028 LIST_ADDQ(&cur_suite->terms, &cur_term->list);
Willy Tarreau74b98a82007-06-16 19:35:18 +0200[diff] [blame]1029 neg = 0;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1030 }
1031
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1032 cond->val |= suite_val;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1033 return cond;
1034
1035 out_free_term:
1036 free(cur_term);
1037 out_free_suite:
1038 prune_acl_cond(cond);
1039 free(cond);
1040 out_return:
1041 return NULL;
1042}
1043
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1044/* Builds an ACL condition starting at the if/unless keyword. The complete
1045 * condition is returned. NULL is returned in case of error or if the first
1046 * word is neither "if" nor "unless". It automatically sets the file name and
Willy Tarreau25320b22013-03-24 07:22:08 +0100[diff] [blame]1047 * the line number in the condition for better error reporting, and sets the
1048 * HTTP intiailization requirements in the proxy. If <err> is not NULL, it will
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1049 * be filled with a pointer to an error message in case of error, that the
1050 * caller is responsible for freeing. The initial location must either be
1051 * freeable or NULL.
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1052 */
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1053struct acl_cond *build_acl_cond(const char *file, int line, struct proxy *px, const char **args, char **err)
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1054{
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]1055 enum acl_cond_pol pol = ACL_COND_NONE;
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1056 struct acl_cond *cond = NULL;
1057
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1058 if (err)
1059 *err = NULL;
1060
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1061 if (!strcmp(*args, "if")) {
1062 pol = ACL_COND_IF;
1063 args++;
1064 }
1065 else if (!strcmp(*args, "unless")) {
1066 pol = ACL_COND_UNLESS;
1067 args++;
1068 }
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1069 else {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]1070 memprintf(err, "conditions must start with either 'if' or 'unless'");
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1071 return NULL;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1072 }
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1073
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]1074 cond = parse_acl_cond(args, &px->acl, pol, err, &px->conf.args, file, line);
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1075 if (!cond) {
1076 /* note that parse_acl_cond must have filled <err> here */
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1077 return NULL;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1078 }
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1079
1080 cond->file = file;
1081 cond->line = line;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1082 px->http_needed |= !!(cond->use & SMP_USE_HTTP_ANY);
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1083 return cond;
1084}
1085
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1086/* Execute condition <cond> and return either ACL_TEST_FAIL, ACL_TEST_MISS or
1087 * ACL_TEST_PASS depending on the test results. ACL_TEST_MISS may only be
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]1088 * returned if <opt> does not contain SMP_OPT_FINAL, indicating that incomplete
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1089 * data is being examined. The function automatically sets SMP_OPT_ITERATE. This
1090 * function only computes the condition, it does not apply the polarity required
1091 * 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]1092 *
1093 * res = acl_pass(res);
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1094 * if (res == ACL_TEST_MISS)
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1095 * return 0;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1096 * if (cond->pol == ACL_COND_UNLESS)
1097 * res = !res;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1098 */
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]1099enum 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]1100{
1101 __label__ fetch_next;
1102 struct acl_term_suite *suite;
1103 struct acl_term *term;
1104 struct acl_expr *expr;
1105 struct acl *acl;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]1106 struct sample smp;
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]1107 enum acl_test_res acl_res, suite_res, cond_res;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1108
Willy Tarreau7a777ed2012-04-26 11:44:02 +0200[diff] [blame]1109 /* ACLs are iterated over all values, so let's always set the flag to
1110 * indicate this to the fetch functions.
1111 */
1112 opt |= SMP_OPT_ITERATE;
1113
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1114 /* We're doing a logical OR between conditions so we initialize to FAIL.
1115 * The MISS status is propagated down from the suites.
1116 */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1117 cond_res = ACL_TEST_FAIL;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1118 list_for_each_entry(suite, &cond->suites, list) {
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1119 /* Evaluate condition suite <suite>. We stop at the first term
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]1120 * which returns ACL_TEST_FAIL. The MISS status is still propagated
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1121 * in case of uncertainty in the result.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1122 */
1123
1124 /* we're doing a logical AND between terms, so we must set the
1125 * initial value to PASS.
1126 */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1127 suite_res = ACL_TEST_PASS;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1128 list_for_each_entry(term, &suite->terms, list) {
1129 acl = term->acl;
1130
1131 /* FIXME: use cache !
1132 * check acl->cache_idx for this.
1133 */
1134
1135 /* ACL result not cached. Let's scan all the expressions
1136 * and use the first one to match.
1137 */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1138 acl_res = ACL_TEST_FAIL;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1139 list_for_each_entry(expr, &acl->expr, list) {
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]1140 /* we need to reset context and flags */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]1141 memset(&smp, 0, sizeof(smp));
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1142 fetch_next:
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]1143 if (!sample_process(px, sess, strm, opt, expr->smp, &smp)) {
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1144 /* maybe we could not fetch because of missing data */
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]1145 if (smp.flags & SMP_F_MAY_CHANGE && !(opt & SMP_OPT_FINAL))
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1146 acl_res |= ACL_TEST_MISS;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1147 continue;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1148 }
Willy Tarreauc4262962010-05-10 23:42:40 +0200[diff] [blame]1149
Thierry FOURNIER1794fdf2014-01-17 15:25:13 +0100[diff] [blame]1150 acl_res |= pat2acl(pattern_exec_match(&expr->pat, &smp, 0));
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1151 /*
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1152 * OK now acl_res holds the result of this expression
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1153 * as one of ACL_TEST_FAIL, ACL_TEST_MISS or ACL_TEST_PASS.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1154 *
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1155 * Then if (!MISS) we can cache the result, and put
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]1156 * (smp.flags & SMP_F_VOLATILE) in the cache flags.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1157 *
1158 * FIXME: implement cache.
1159 *
1160 */
1161
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1162 /* we're ORing these terms, so a single PASS is enough */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1163 if (acl_res == ACL_TEST_PASS)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1164 break;
1165
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]1166 if (smp.flags & SMP_F_NOT_LAST)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1167 goto fetch_next;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1168
1169 /* sometimes we know the fetched data is subject to change
1170 * later and give another chance for a new match (eg: request
1171 * size, time, ...)
1172 */
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]1173 if (smp.flags & SMP_F_MAY_CHANGE && !(opt & SMP_OPT_FINAL))
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1174 acl_res |= ACL_TEST_MISS;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1175 }
1176 /*
1177 * Here we have the result of an ACL (cached or not).
1178 * ACLs are combined, negated or not, to form conditions.
1179 */
1180
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1181 if (term->neg)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1182 acl_res = acl_neg(acl_res);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1183
1184 suite_res &= acl_res;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1185
Willy Tarreau79c412b2013-10-30 19:30:32 +0100[diff] [blame]1186 /* we're ANDing these terms, so a single FAIL or MISS is enough */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1187 if (suite_res != ACL_TEST_PASS)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1188 break;
1189 }
1190 cond_res |= suite_res;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1191
1192 /* we're ORing these terms, so a single PASS is enough */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1193 if (cond_res == ACL_TEST_PASS)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1194 break;
1195 }
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1196 return cond_res;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1197}
1198
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1199/* Returns a pointer to the first ACL conflicting with usage at place <where>
1200 * which is one of the SMP_VAL_* bits indicating a check place, or NULL if
1201 * no conflict is found. Only full conflicts are detected (ACL is not usable).
1202 * Use the next function to check for useless keywords.
Willy Tarreaudd64f8d2008-07-27 22:02:32 +0200[diff] [blame]1203 */
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1204const struct acl *acl_cond_conflicts(const struct acl_cond *cond, unsigned int where)
Willy Tarreaudd64f8d2008-07-27 22:02:32 +0200[diff] [blame]1205{
1206 struct acl_term_suite *suite;
1207 struct acl_term *term;
1208 struct acl *acl;
1209
1210 list_for_each_entry(suite, &cond->suites, list) {
1211 list_for_each_entry(term, &suite->terms, list) {
1212 acl = term->acl;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1213 if (!(acl->val & where))
Willy Tarreaudd64f8d2008-07-27 22:02:32 +0200[diff] [blame]1214 return acl;
1215 }
1216 }
1217 return NULL;
1218}
1219
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1220/* Returns a pointer to the first ACL and its first keyword to conflict with
1221 * usage at place <where> which is one of the SMP_VAL_* bits indicating a check
1222 * place. Returns true if a conflict is found, with <acl> and <kw> set (if non
1223 * null), or false if not conflict is found. The first useless keyword is
1224 * returned.
1225 */
Willy Tarreau93fddf12013-03-31 22:59:32 +0200[diff] [blame]1226int 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]1227{
1228 struct acl_term_suite *suite;
1229 struct acl_term *term;
1230 struct acl_expr *expr;
1231
1232 list_for_each_entry(suite, &cond->suites, list) {
1233 list_for_each_entry(term, &suite->terms, list) {
1234 list_for_each_entry(expr, &term->acl->expr, list) {
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]1235 if (!(expr->smp->fetch->val & where)) {
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1236 if (acl)
1237 *acl = term->acl;
1238 if (kw)
1239 *kw = expr->kw;
1240 return 1;
1241 }
1242 }
1243 }
1244 }
1245 return 0;
1246}
1247
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1248/*
1249 * Find targets for userlist and groups in acl. Function returns the number
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]1250 * of errors or OK if everything is fine. It must be called only once sample
1251 * fetch arguments have been resolved (after smp_resolve_args()).
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1252 */
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]1253int acl_find_targets(struct proxy *p)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1254{
1255
1256 struct acl *acl;
1257 struct acl_expr *expr;
Thierry FOURNIER3ead5b92013-12-13 12:12:18 +0100[diff] [blame]1258 struct pattern_list *pattern;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1259 int cfgerr = 0;
Thierry FOURNIERc5959fd2014-01-20 14:29:33 +0100[diff] [blame]1260 struct pattern_expr_list *pexp;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1261
1262 list_for_each_entry(acl, &p->acl, list) {
1263 list_for_each_entry(expr, &acl->expr, list) {
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]1264 if (!strcmp(expr->kw, "http_auth_group")) {
1265 /* Note: the ARGT_USR argument may only have been resolved earlier
1266 * by smp_resolve_args().
1267 */
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]1268 if (expr->smp->arg_p->unresolved) {
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]1269 Alert("Internal bug in proxy %s: %sacl %s %s() makes use of unresolved userlist '%s'. Please report this.\n",
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]1270 p->id, *acl->name ? "" : "anonymous ", acl->name, expr->kw, expr->smp->arg_p->data.str.str);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]1271 cfgerr++;
Willy Tarreau496aa012012-06-01 10:38:29 +0200[diff] [blame]1272 continue;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1273 }
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1274
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]1275 if (LIST_ISEMPTY(&expr->pat.head)) {
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1276 Alert("proxy %s: acl %s %s(): no groups specified.\n",
Willy Tarreau93fddf12013-03-31 22:59:32 +0200[diff] [blame]1277 p->id, acl->name, expr->kw);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1278 cfgerr++;
1279 continue;
1280 }
1281
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]1282 /* For each pattern, check if the group exists. */
Thierry FOURNIERc5959fd2014-01-20 14:29:33 +0100[diff] [blame]1283 list_for_each_entry(pexp, &expr->pat.head, list) {
1284 if (LIST_ISEMPTY(&pexp->expr->patterns)) {
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]1285 Alert("proxy %s: acl %s %s(): no groups specified.\n",
1286 p->id, acl->name, expr->kw);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1287 cfgerr++;
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]1288 continue;
1289 }
1290
Thierry FOURNIERc5959fd2014-01-20 14:29:33 +0100[diff] [blame]1291 list_for_each_entry(pattern, &pexp->expr->patterns, list) {
1292 /* this keyword only has one argument */
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]1293 if (!check_group(expr->smp->arg_p->data.usr, pattern->pat.ptr.str)) {
1294 Alert("proxy %s: acl %s %s(): invalid group '%s'.\n",
1295 p->id, acl->name, expr->kw, pattern->pat.ptr.str);
1296 cfgerr++;
1297 }
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1298 }
1299 }
1300 }
1301 }
1302 }
1303
1304 return cfgerr;
1305}
Willy Tarreaudd64f8d2008-07-27 22:02:32 +0200[diff] [blame]1306
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]1307/* initializes ACLs by resolving the sample fetch names they rely upon.
1308 * Returns 0 on success, otherwise an error.
1309 */
1310int init_acl()
1311{
1312 int err = 0;
1313 int index;
1314 const char *name;
1315 struct acl_kw_list *kwl;
1316 struct sample_fetch *smp;
1317
1318 list_for_each_entry(kwl, &acl_keywords.list, list) {
1319 for (index = 0; kwl->kw[index].kw != NULL; index++) {
1320 name = kwl->kw[index].fetch_kw;
1321 if (!name)
1322 name = kwl->kw[index].kw;
1323
1324 smp = find_sample_fetch(name, strlen(name));
1325 if (!smp) {
1326 Alert("Critical internal error: ACL keyword '%s' relies on sample fetch '%s' which was not registered!\n",
1327 kwl->kw[index].kw, name);
1328 err++;
1329 continue;
1330 }
1331 kwl->kw[index].smp = smp;
1332 }
1333 }
1334 return err;
1335}
Willy Tarreaud4c33c82013-01-07 21:59:07 +0100[diff] [blame]1336
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1337/************************************************************************/
Willy Tarreaud4c33c82013-01-07 21:59:07 +0100[diff] [blame]1338/* All supported sample and ACL keywords must be declared here. */
1339/************************************************************************/
1340
1341/* Note: must not be declared <const> as its list will be overwritten.
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]1342 * Please take care of keeping this list alphabetically sorted.
1343 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]1344static struct acl_kw_list acl_kws = {ILH, {
Willy Tarreaud4c33c82013-01-07 21:59:07 +0100[diff] [blame]1345 { /* END */ },
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1346}};
1347
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1348__attribute__((constructor))
1349static void __acl_init(void)
1350{
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1351 acl_register_keywords(&acl_kws);
1352}
1353
1354
1355/*
1356 * Local variables:
1357 * c-indent-level: 8
1358 * c-basic-offset: 8
1359 * End:
1360 */