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git01.mediatek.com / haproxy / 3716ebc50fa73f7134063f3c9a45da8081eda55b / . / src / acl.c
blob: 318cb5139b11399de2d667723b1707deb9b06471 [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;
93 while (*kwend && *kwend != '(' && *kwend != ',')
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 Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]193 for (arg = args[0]; *arg && *arg != '(' && *arg != ','; arg++);
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]194
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]195 endt = arg;
196 if (*endt == '(') {
197 /* look for the end of this term and skip the opening parenthesis */
198 endt = ++arg;
199 while (*endt && *endt != ')')
200 endt++;
201 if (*endt != ')') {
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]202 memprintf(err, "missing closing ')' after arguments to ACL keyword '%s'", aclkw->kw);
203 goto out_free_smp;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]204 }
205 }
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]206
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]207 /* At this point, we have :
208 * - args[0] : beginning of the keyword
209 * - arg : end of the keyword, first character not part of keyword
210 * nor the opening parenthesis (so first character of args
211 * if present).
212 * - endt : end of the term (=arg or last parenthesis if args are present)
213 */
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]214 nbargs = make_arg_list(arg, endt - arg, smp->fetch->arg_mask, &smp->arg_p,
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]215 err, NULL, NULL, al);
216 if (nbargs < 0) {
217 /* note that make_arg_list will have set <err> here */
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]218 memprintf(err, "ACL keyword '%s' : %s", aclkw->kw, *err);
219 goto out_free_smp;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]220 }
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]221
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]222 if (!smp->arg_p) {
223 smp->arg_p = empty_arg_list;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]224 }
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]225 else if (smp->fetch->val_args && !smp->fetch->val_args(smp->arg_p, err)) {
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]226 /* invalid keyword argument, error must have been
227 * set by val_args().
228 */
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]229 memprintf(err, "in argument to '%s', %s", aclkw->kw, *err);
230 goto out_free_smp;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]231 }
232 arg = endt;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]233
Joseph Herlant68082792018-11-15 14:55:09 -0800[diff] [blame]234 /* look for the beginning of the converters list. Those directly attached
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]235 * to the ACL keyword are found just after <arg> which points to the comma.
Willy Tarreau6f0ddca2014-08-29 17:36:40 +0200[diff] [blame]236 * 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]237 * anymore but the one related to the converter's output type.
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]238 */
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]239 cur_type = smp->fetch->out_type;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]240 while (*arg) {
241 struct sample_conv *conv;
242 struct sample_conv_expr *conv_expr;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]243
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]244 if (*arg == ')') /* skip last closing parenthesis */
245 arg++;
246
247 if (*arg && *arg != ',') {
248 if (ckw)
Willy Tarreau97108e02016-11-25 07:33:24 +0100[diff] [blame]249 memprintf(err, "ACL keyword '%s' : missing comma after converter '%s'.",
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]250 aclkw->kw, ckw);
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]251 else
252 memprintf(err, "ACL keyword '%s' : missing comma after fetch keyword.",
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]253 aclkw->kw);
254 goto out_free_smp;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]255 }
Willy Tarreauae52f062012-04-26 12:13:35 +0200[diff] [blame]256
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]257 while (*arg == ',') /* then trailing commas */
258 arg++;
Willy Tarreau2e845be2012-10-19 19:49:09 +0200[diff] [blame]259
Willy Tarreau97108e02016-11-25 07:33:24 +0100[diff] [blame]260 begw = arg; /* start of converter keyword */
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]261
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]262 if (!*begw)
263 /* none ? end of converters */
264 break;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]265
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]266 for (endw = begw; *endw && *endw != '(' && *endw != ','; endw++);
Willy Tarreau9ca69362013-10-22 19:10:06 +0200[diff] [blame]267
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]268 free(ckw);
269 ckw = my_strndup(begw, endw - begw);
Willy Tarreauf75d0082013-04-07 21:20:44 +0200[diff] [blame]270
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]271 conv = find_sample_conv(begw, endw - begw);
272 if (!conv) {
273 /* Unknown converter method */
Willy Tarreau97108e02016-11-25 07:33:24 +0100[diff] [blame]274 memprintf(err, "ACL keyword '%s' : unknown converter '%s'.",
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]275 aclkw->kw, ckw);
276 goto out_free_smp;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]277 }
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]278
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]279 arg = endw;
280 if (*arg == '(') {
281 /* look for the end of this term */
282 while (*arg && *arg != ')')
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]283 arg++;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]284 if (*arg != ')') {
Willy Tarreau97108e02016-11-25 07:33:24 +0100[diff] [blame]285 memprintf(err, "ACL keyword '%s' : syntax error: missing ')' after converter '%s'.",
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]286 aclkw->kw, ckw);
287 goto out_free_smp;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]288 }
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]289 }
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]290
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]291 if (conv->in_type >= SMP_TYPES || conv->out_type >= SMP_TYPES) {
Willy Tarreau97108e02016-11-25 07:33:24 +0100[diff] [blame]292 memprintf(err, "ACL keyword '%s' : returns type of converter '%s' is unknown.",
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]293 aclkw->kw, ckw);
294 goto out_free_smp;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]295 }
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]296
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]297 /* If impossible type conversion */
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]298 if (!sample_casts[cur_type][conv->in_type]) {
Willy Tarreau97108e02016-11-25 07:33:24 +0100[diff] [blame]299 memprintf(err, "ACL keyword '%s' : converter '%s' cannot be applied.",
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]300 aclkw->kw, ckw);
301 goto out_free_smp;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]302 }
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]303
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]304 cur_type = conv->out_type;
Vincent Bernat02779b62016-04-03 13:48:43 +0200[diff] [blame]305 conv_expr = calloc(1, sizeof(*conv_expr));
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]306 if (!conv_expr)
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]307 goto out_free_smp;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]308
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]309 LIST_ADDQ(&(smp->conv_exprs), &(conv_expr->list));
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]310 conv_expr->conv = conv;
Willy Tarreau6f0ddca2014-08-29 17:36:40 +0200[diff] [blame]311 acl_conv_found = 1;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]312
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]313 if (arg != endw) {
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]314 int err_arg;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]315
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]316 if (!conv->arg_mask) {
Willy Tarreau97108e02016-11-25 07:33:24 +0100[diff] [blame]317 memprintf(err, "ACL keyword '%s' : converter '%s' does not support any args.",
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]318 aclkw->kw, ckw);
319 goto out_free_smp;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]320 }
321
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]322 al->kw = smp->fetch->kw;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]323 al->conv = conv_expr->conv->kw;
Willy Tarreauadaddc22013-12-13 01:30:22 +0100[diff] [blame]324 if (make_arg_list(endw + 1, arg - endw - 1, conv->arg_mask, &conv_expr->arg_p, err, NULL, &err_arg, al) < 0) {
Willy Tarreau97108e02016-11-25 07:33:24 +0100[diff] [blame]325 memprintf(err, "ACL keyword '%s' : invalid arg %d in converter '%s' : %s.",
Willy Tarreauadaddc22013-12-13 01:30:22 +0100[diff] [blame]326 aclkw->kw, err_arg+1, ckw, *err);
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]327 goto out_free_smp;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]328 }
329
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]330 if (!conv_expr->arg_p)
331 conv_expr->arg_p = empty_arg_list;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]332
Thierry FOURNIEReeaa9512014-02-11 14:00:19 +0100[diff] [blame]333 if (conv->val_args && !conv->val_args(conv_expr->arg_p, conv, file, line, err)) {
Willy Tarreau97108e02016-11-25 07:33:24 +0100[diff] [blame]334 memprintf(err, "ACL keyword '%s' : invalid args in converter '%s' : %s.",
Willy Tarreauadaddc22013-12-13 01:30:22 +0100[diff] [blame]335 aclkw->kw, ckw, *err);
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]336 goto out_free_smp;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]337 }
338 }
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]339 else if (ARGM(conv->arg_mask)) {
Willy Tarreau97108e02016-11-25 07:33:24 +0100[diff] [blame]340 memprintf(err, "ACL keyword '%s' : missing args for converter '%s'.",
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]341 aclkw->kw, ckw);
342 goto out_free_smp;
Willy Tarreau131b4662013-12-13 01:08:36 +0100[diff] [blame]343 }
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]344 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]345 }
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]346 else {
347 /* This is not an ACL keyword, so we hope this is a sample fetch
348 * keyword that we're going to transparently use as an ACL. If
349 * so, we retrieve a completely parsed expression with args and
350 * convs already done.
351 */
Thierry FOURNIEReeaa9512014-02-11 14:00:19 +0100[diff] [blame]352 smp = sample_parse_expr((char **)args, &idx, file, line, err, al);
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]353 if (!smp) {
354 memprintf(err, "%s in ACL expression '%s'", *err, *args);
355 goto out_return;
356 }
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]357 cur_type = smp_expr_output_type(smp);
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]358 }
359
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]360 expr = calloc(1, sizeof(*expr));
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]361 if (!expr) {
362 memprintf(err, "out of memory when parsing ACL expression");
363 goto out_return;
364 }
365
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]366 pattern_init_head(&expr->pat);
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]367
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]368 expr->pat.expect_type = cur_type;
369 expr->smp = smp;
370 expr->kw = smp->fetch->kw;
371 smp = NULL; /* don't free it anymore */
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]372
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]373 if (aclkw && !acl_conv_found) {
374 expr->kw = aclkw->kw;
375 expr->pat.parse = aclkw->parse ? aclkw->parse : pat_parse_fcts[aclkw->match_type];
376 expr->pat.index = aclkw->index ? aclkw->index : pat_index_fcts[aclkw->match_type];
377 expr->pat.match = aclkw->match ? aclkw->match : pat_match_fcts[aclkw->match_type];
378 expr->pat.delete = aclkw->delete ? aclkw->delete : pat_delete_fcts[aclkw->match_type];
379 expr->pat.prune = aclkw->prune ? aclkw->prune : pat_prune_fcts[aclkw->match_type];
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]380 }
381
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]382 if (!expr->pat.parse) {
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]383 /* Parse/index/match functions depend on the expression type,
384 * so we have to map them now. Some types can be automatically
385 * converted.
386 */
387 switch (cur_type) {
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]388 case SMP_T_BOOL:
389 expr->pat.parse = pat_parse_fcts[PAT_MATCH_BOOL];
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]390 expr->pat.index = pat_index_fcts[PAT_MATCH_BOOL];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]391 expr->pat.match = pat_match_fcts[PAT_MATCH_BOOL];
Thierry FOURNIERb1136502014-01-15 11:38:49 +0100[diff] [blame]392 expr->pat.delete = pat_delete_fcts[PAT_MATCH_BOOL];
Thierry FOURNIER6f7203d2014-01-14 16:24:51 +0100[diff] [blame]393 expr->pat.prune = pat_prune_fcts[PAT_MATCH_BOOL];
Thierry FOURNIER5d344082014-01-27 14:19:53 +0100[diff] [blame]394 expr->pat.expect_type = pat_match_types[PAT_MATCH_BOOL];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]395 break;
396 case SMP_T_SINT:
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]397 expr->pat.parse = pat_parse_fcts[PAT_MATCH_INT];
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]398 expr->pat.index = pat_index_fcts[PAT_MATCH_INT];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]399 expr->pat.match = pat_match_fcts[PAT_MATCH_INT];
Thierry FOURNIERb1136502014-01-15 11:38:49 +0100[diff] [blame]400 expr->pat.delete = pat_delete_fcts[PAT_MATCH_INT];
Thierry FOURNIER6f7203d2014-01-14 16:24:51 +0100[diff] [blame]401 expr->pat.prune = pat_prune_fcts[PAT_MATCH_INT];
Thierry FOURNIER5d344082014-01-27 14:19:53 +0100[diff] [blame]402 expr->pat.expect_type = pat_match_types[PAT_MATCH_INT];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]403 break;
Willy Tarreau78c5eec2019-04-19 11:45:20 +0200[diff] [blame]404 case SMP_T_ADDR:
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]405 case SMP_T_IPV4:
406 case SMP_T_IPV6:
407 expr->pat.parse = pat_parse_fcts[PAT_MATCH_IP];
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]408 expr->pat.index = pat_index_fcts[PAT_MATCH_IP];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]409 expr->pat.match = pat_match_fcts[PAT_MATCH_IP];
Thierry FOURNIERb1136502014-01-15 11:38:49 +0100[diff] [blame]410 expr->pat.delete = pat_delete_fcts[PAT_MATCH_IP];
Thierry FOURNIER6f7203d2014-01-14 16:24:51 +0100[diff] [blame]411 expr->pat.prune = pat_prune_fcts[PAT_MATCH_IP];
Thierry FOURNIER5d344082014-01-27 14:19:53 +0100[diff] [blame]412 expr->pat.expect_type = pat_match_types[PAT_MATCH_IP];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]413 break;
Thierry FOURNIER9fefbd52014-05-11 15:15:00 +0200[diff] [blame]414 case SMP_T_STR:
415 expr->pat.parse = pat_parse_fcts[PAT_MATCH_STR];
416 expr->pat.index = pat_index_fcts[PAT_MATCH_STR];
417 expr->pat.match = pat_match_fcts[PAT_MATCH_STR];
418 expr->pat.delete = pat_delete_fcts[PAT_MATCH_STR];
419 expr->pat.prune = pat_prune_fcts[PAT_MATCH_STR];
420 expr->pat.expect_type = pat_match_types[PAT_MATCH_STR];
421 break;
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]422 }
423 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]424
Willy Tarreau3c3dfd52013-11-04 18:09:12 +0100[diff] [blame]425 /* Additional check to protect against common mistakes */
Thierry FOURNIERd163e1c2013-11-28 11:41:23 +0100[diff] [blame]426 if (expr->pat.parse && cur_type != SMP_T_BOOL && !*args[1]) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100[diff] [blame]427 ha_warning("parsing acl keyword '%s' :\n"
428 " no pattern to match against were provided, so this ACL will never match.\n"
429 " If this is what you intended, please add '--' to get rid of this warning.\n"
430 " If you intended to match only for existence, please use '-m found'.\n"
431 " If you wanted to force an int to match as a bool, please use '-m bool'.\n"
432 "\n",
433 args[0]);
Willy Tarreau3c3dfd52013-11-04 18:09:12 +0100[diff] [blame]434 }
435
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]436 args++;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]437
438 /* check for options before patterns. Supported options are :
439 * -i : ignore case for all patterns by default
440 * -f : read patterns from those files
Willy Tarreau5adeda12013-03-31 22:13:34 +0200[diff] [blame]441 * -m : force matching method (must be used before -f)
Thierry FOURNIER9860c412014-01-29 14:23:29 +0100[diff] [blame]442 * -M : load the file as map file
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]443 * -u : force the unique id of the acl
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]444 * -- : everything after this is not an option
445 */
Christopher Faulet54ceb042017-06-14 14:41:33 +0200[diff] [blame]446 refflags = PAT_REF_ACL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]447 patflags = 0;
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]448 is_loaded = 0;
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]449 unique_id = -1;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]450 while (**args == '-') {
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]451 if (strcmp(*args, "-i") == 0)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]452 patflags |= PAT_MF_IGNORE_CASE;
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]453 else if (strcmp(*args, "-n") == 0)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]454 patflags |= PAT_MF_NO_DNS;
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]455 else if (strcmp(*args, "-u") == 0) {
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]456 unique_id = strtol(args[1], &error, 10);
457 if (*error != '\0') {
458 memprintf(err, "the argument of -u must be an integer");
459 goto out_free_expr;
460 }
461
462 /* Check if this id is really unique. */
463 if (pat_ref_lookupid(unique_id)) {
464 memprintf(err, "the id is already used");
465 goto out_free_expr;
466 }
467
468 args++;
469 }
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]470 else if (strcmp(*args, "-f") == 0) {
Thierry FOURNIERd163e1c2013-11-28 11:41:23 +0100[diff] [blame]471 if (!expr->pat.parse) {
Willy Tarreau9987ea92013-06-11 21:09:06 +0200[diff] [blame]472 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]473 goto out_free_expr;
474 }
475
Christopher Faulet54ceb042017-06-14 14:41:33 +0200[diff] [blame]476 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]477 goto out_free_expr;
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]478 is_loaded = 1;
Willy Tarreau5adeda12013-03-31 22:13:34 +0200[diff] [blame]479 args++;
480 }
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]481 else if (strcmp(*args, "-m") == 0) {
Willy Tarreau5adeda12013-03-31 22:13:34 +0200[diff] [blame]482 int idx;
483
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]484 if (is_loaded) {
Willy Tarreau5adeda12013-03-31 22:13:34 +0200[diff] [blame]485 memprintf(err, "'-m' must only be specified before patterns and files in parsing ACL expression");
486 goto out_free_expr;
487 }
488
Willy Tarreau6f8fe312013-11-28 22:24:25 +0100[diff] [blame]489 idx = pat_find_match_name(args[1]);
Willy Tarreau5adeda12013-03-31 22:13:34 +0200[diff] [blame]490 if (idx < 0) {
491 memprintf(err, "unknown matching method '%s' when parsing ACL expression", args[1]);
492 goto out_free_expr;
493 }
494
495 /* 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]496 if (idx != PAT_MATCH_FOUND && !sample_casts[cur_type][pat_match_types[idx]]) {
Willy Tarreau93fddf12013-03-31 22:59:32 +0200[diff] [blame]497 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]498 goto out_free_expr;
499 }
Thierry FOURNIERe3ded592013-12-06 15:36:54 +0100[diff] [blame]500 expr->pat.parse = pat_parse_fcts[idx];
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]501 expr->pat.index = pat_index_fcts[idx];
Thierry FOURNIERe3ded592013-12-06 15:36:54 +0100[diff] [blame]502 expr->pat.match = pat_match_fcts[idx];
Thierry FOURNIERb1136502014-01-15 11:38:49 +0100[diff] [blame]503 expr->pat.delete = pat_delete_fcts[idx];
Thierry FOURNIER6f7203d2014-01-14 16:24:51 +0100[diff] [blame]504 expr->pat.prune = pat_prune_fcts[idx];
Thierry FOURNIER5d344082014-01-27 14:19:53 +0100[diff] [blame]505 expr->pat.expect_type = pat_match_types[idx];
Willy Tarreau2b5285d2010-05-09 23:45:24 +0200[diff] [blame]506 args++;
507 }
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]508 else if (strcmp(*args, "-M") == 0) {
Christopher Faulet54ceb042017-06-14 14:41:33 +0200[diff] [blame]509 refflags |= PAT_REF_MAP;
Thierry FOURNIER9860c412014-01-29 14:23:29 +0100[diff] [blame]510 load_as_map = 1;
511 }
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]512 else if (strcmp(*args, "--") == 0) {
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]513 args++;
514 break;
515 }
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]516 else {
517 memprintf(err, "'%s' is not a valid ACL option. Please use '--' before any pattern beginning with a '-'", args[0]);
518 goto out_free_expr;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]519 break;
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]520 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]521 args++;
522 }
523
Thierry FOURNIERd163e1c2013-11-28 11:41:23 +0100[diff] [blame]524 if (!expr->pat.parse) {
Willy Tarreau9987ea92013-06-11 21:09:06 +0200[diff] [blame]525 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]526 goto out_free_expr;
527 }
528
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]529 /* Create displayed reference */
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200[diff] [blame]530 snprintf(trash.area, trash.size, "acl '%s' file '%s' line %d",
531 expr->kw, file, line);
532 trash.area[trash.size - 1] = '\0';
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]533
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]534 /* Create new patern reference. */
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200[diff] [blame]535 ref = pat_ref_newid(unique_id, trash.area, PAT_REF_ACL);
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]536 if (!ref) {
537 memprintf(err, "memory error");
538 goto out_free_expr;
539 }
540
541 /* Create new pattern expression associated to this reference. */
Emeric Brun7d27f3c2017-07-03 17:54:23 +0200[diff] [blame]542 pattern_expr = pattern_new_expr(&expr->pat, ref, patflags, err, NULL);
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]543 if (!pattern_expr)
544 goto out_free_expr;
545
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]546 /* now parse all patterns */
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]547 while (**args) {
548 arg = *args;
549
550 /* Compatibility layer. Each pattern can parse only one string per pattern,
551 * but the pat_parser_int() and pat_parse_dotted_ver() parsers were need
552 * optionnaly two operators. The first operator is the match method: eq,
553 * le, lt, ge and gt. pat_parse_int() and pat_parse_dotted_ver() functions
554 * can have a compatibility syntax based on ranges:
555 *
556 * pat_parse_int():
557 *
558 * "eq x" -> "x" or "x:x"
559 * "le x" -> ":x"
560 * "lt x" -> ":y" (with y = x - 1)
561 * "ge x" -> "x:"
562 * "gt x" -> "y:" (with y = x + 1)
563 *
564 * pat_parse_dotted_ver():
565 *
566 * "eq x.y" -> "x.y" or "x.y:x.y"
567 * "le x.y" -> ":x.y"
568 * "lt x.y" -> ":w.z" (with w.z = x.y - 1)
569 * "ge x.y" -> "x.y:"
570 * "gt x.y" -> "w.z:" (with w.z = x.y + 1)
571 *
572 * If y is not present, assume that is "0".
573 *
574 * The syntax eq, le, lt, ge and gt are proper to the acl syntax. The
575 * following block of code detect the operator, and rewrite each value
576 * in parsable string.
577 */
578 if (expr->pat.parse == pat_parse_int ||
579 expr->pat.parse == pat_parse_dotted_ver) {
580 /* Check for operator. If the argument is operator, memorise it and
581 * continue to the next argument.
582 */
583 op = get_std_op(arg);
584 if (op != -1) {
585 operator = op;
586 args++;
587 continue;
588 }
589
590 /* Check if the pattern contain ':' or '-' character. */
591 contain_colon = (strchr(arg, ':') || strchr(arg, '-'));
592
593 /* If the pattern contain ':' or '-' character, give it to the parser as is.
594 * If no contain ':' and operator is STD_OP_EQ, give it to the parser as is.
595 * In other case, try to convert the value according with the operator.
596 */
597 if (!contain_colon && operator != STD_OP_EQ) {
598 /* Search '.' separator. */
599 dot = strchr(arg, '.');
600 if (!dot) {
601 have_dot = 0;
602 minor = 0;
603 dot = arg + strlen(arg);
604 }
605 else
606 have_dot = 1;
607
608 /* convert the integer minor part for the pat_parse_dotted_ver() function. */
609 if (expr->pat.parse == pat_parse_dotted_ver && have_dot) {
610 if (strl2llrc(dot+1, strlen(dot+1), &minor) != 0) {
611 memprintf(err, "'%s' is neither a number nor a supported operator", arg);
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]612 goto out_free_expr;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]613 }
614 if (minor >= 65536) {
615 memprintf(err, "'%s' contains too large a minor value", arg);
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]616 goto out_free_expr;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]617 }
618 }
619
620 /* convert the integer value for the pat_parse_int() function, and the
621 * integer major part for the pat_parse_dotted_ver() function.
622 */
623 if (strl2llrc(arg, dot - arg, &value) != 0) {
624 memprintf(err, "'%s' is neither a number nor a supported operator", 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 if (expr->pat.parse == pat_parse_dotted_ver) {
628 if (value >= 65536) {
629 memprintf(err, "'%s' contains too large a major value", arg);
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]630 goto out_free_expr;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]631 }
632 value = (value << 16) | (minor & 0xffff);
633 }
634
635 switch (operator) {
636
637 case STD_OP_EQ: /* this case is not possible. */
638 memprintf(err, "internal error");
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]639 goto out_free_expr;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]640
641 case STD_OP_GT:
642 value++; /* gt = ge + 1 */
643
644 case STD_OP_GE:
645 if (expr->pat.parse == pat_parse_int)
646 snprintf(buffer, NB_LLMAX_STR+NB_LLMAX_STR+2, "%lld:", value);
647 else
648 snprintf(buffer, NB_LLMAX_STR+NB_LLMAX_STR+2, "%lld.%lld:",
649 value >> 16, value & 0xffff);
650 arg = buffer;
651 break;
652
653 case STD_OP_LT:
654 value--; /* lt = le - 1 */
655
656 case STD_OP_LE:
657 if (expr->pat.parse == pat_parse_int)
658 snprintf(buffer, NB_LLMAX_STR+NB_LLMAX_STR+2, ":%lld", value);
659 else
660 snprintf(buffer, NB_LLMAX_STR+NB_LLMAX_STR+2, ":%lld.%lld",
661 value >> 16, value & 0xffff);
662 arg = buffer;
663 break;
664 }
665 }
666 }
667
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]668 /* Add sample to the reference, and try to compile it fior each pattern
669 * using this value.
670 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]671 if (!pat_ref_add(ref, arg, NULL, err))
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]672 goto out_free_expr;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]673 args++;
674 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]675
676 return expr;
677
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]678 out_free_expr:
679 prune_acl_expr(expr);
680 free(expr);
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]681 free(ckw);
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]682 out_free_smp:
683 free(smp);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]684 out_return:
685 return NULL;
686}
687
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200[diff] [blame]688/* Purge everything in the acl <acl>, then return <acl>. */
689struct acl *prune_acl(struct acl *acl) {
690
691 struct acl_expr *expr, *exprb;
692
693 free(acl->name);
694
695 list_for_each_entry_safe(expr, exprb, &acl->expr, list) {
696 LIST_DEL(&expr->list);
697 prune_acl_expr(expr);
698 free(expr);
699 }
700
701 return acl;
702}
703
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]704/* Parse an ACL with the name starting at <args>[0], and with a list of already
705 * 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]706 * 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]707 * an anonymous one and it won't be merged with any other one. If <err> is not
708 * NULL, it will be filled with an appropriate error. This pointer must be
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]709 * freeable or NULL. <al> is the arg_list serving as a head for unresolved
710 * dependencies.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]711 *
712 * args syntax: <aclname> <acl_expr>
713 */
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]714struct acl *parse_acl(const char **args, struct list *known_acl, char **err, struct arg_list *al,
715 const char *file, int line)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]716{
717 __label__ out_return, out_free_acl_expr, out_free_name;
718 struct acl *cur_acl;
719 struct acl_expr *acl_expr;
720 char *name;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]721 const char *pos;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]722
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]723 if (**args && (pos = invalid_char(*args))) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]724 memprintf(err, "invalid character in ACL name : '%c'", *pos);
Willy Tarreau2e74c3f2007-12-02 18:45:09 +0100[diff] [blame]725 goto out_return;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]726 }
Willy Tarreau2e74c3f2007-12-02 18:45:09 +0100[diff] [blame]727
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]728 acl_expr = parse_acl_expr(args + 1, err, al, file, line);
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]729 if (!acl_expr) {
730 /* parse_acl_expr will have filled <err> here */
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]731 goto out_return;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]732 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]733
Willy Tarreau404e8ab2009-07-26 19:40:40 +0200[diff] [blame]734 /* Check for args beginning with an opening parenthesis just after the
735 * subject, as this is almost certainly a typo. Right now we can only
736 * emit a warning, so let's do so.
737 */
Krzysztof Piotr Oledzki4cdd8312009-10-05 00:23:35 +0200[diff] [blame]738 if (!strchr(args[1], '(') && *args[2] == '(')
Christopher Faulet767a84b2017-11-24 16:50:31 +0100[diff] [blame]739 ha_warning("parsing acl '%s' :\n"
740 " matching '%s' for pattern '%s' is likely a mistake and probably\n"
741 " not what you want. Maybe you need to remove the extraneous space before '('.\n"
742 " If you are really sure this is not an error, please insert '--' between the\n"
743 " match and the pattern to make this warning message disappear.\n",
744 args[0], args[1], args[2]);
Willy Tarreau404e8ab2009-07-26 19:40:40 +0200[diff] [blame]745
Willy Tarreau2a56c5e2010-03-15 16:13:29 +0100[diff] [blame]746 if (*args[0])
747 cur_acl = find_acl_by_name(args[0], known_acl);
748 else
749 cur_acl = NULL;
750
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]751 if (!cur_acl) {
752 name = strdup(args[0]);
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]753 if (!name) {
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_acl_expr;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]756 }
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]757 cur_acl = calloc(1, sizeof(*cur_acl));
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]758 if (cur_acl == NULL) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]759 memprintf(err, "out of memory when parsing ACL");
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]760 goto out_free_name;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]761 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]762
763 LIST_INIT(&cur_acl->expr);
764 LIST_ADDQ(known_acl, &cur_acl->list);
765 cur_acl->name = name;
766 }
767
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]768 /* We want to know what features the ACL needs (typically HTTP parsing),
769 * and where it may be used. If an ACL relies on multiple matches, it is
770 * OK if at least one of them may match in the context where it is used.
771 */
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]772 cur_acl->use |= acl_expr->smp->fetch->use;
773 cur_acl->val |= acl_expr->smp->fetch->val;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]774 LIST_ADDQ(&cur_acl->expr, &acl_expr->list);
775 return cur_acl;
776
777 out_free_name:
778 free(name);
779 out_free_acl_expr:
780 prune_acl_expr(acl_expr);
781 free(acl_expr);
782 out_return:
783 return NULL;
784}
785
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]786/* Some useful ACLs provided by default. Only those used are allocated. */
787
788const struct {
789 const char *name;
790 const char *expr[4]; /* put enough for longest expression */
791} default_acl_list[] = {
Willy Tarreau58393e12008-07-20 10:39:22 +0200[diff] [blame]792 { .name = "TRUE", .expr = {"always_true",""}},
793 { .name = "FALSE", .expr = {"always_false",""}},
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]794 { .name = "LOCALHOST", .expr = {"src","127.0.0.1/8",""}},
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]795 { .name = "HTTP", .expr = {"req_proto_http",""}},
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]796 { .name = "HTTP_1.0", .expr = {"req_ver","1.0",""}},
797 { .name = "HTTP_1.1", .expr = {"req_ver","1.1",""}},
798 { .name = "METH_CONNECT", .expr = {"method","CONNECT",""}},
Daniel Schneller9ff96c72016-04-11 17:45:29 +0200[diff] [blame]799 { .name = "METH_DELETE", .expr = {"method","DELETE",""}},
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]800 { .name = "METH_GET", .expr = {"method","GET","HEAD",""}},
801 { .name = "METH_HEAD", .expr = {"method","HEAD",""}},
802 { .name = "METH_OPTIONS", .expr = {"method","OPTIONS",""}},
803 { .name = "METH_POST", .expr = {"method","POST",""}},
Daniel Schneller9ff96c72016-04-11 17:45:29 +0200[diff] [blame]804 { .name = "METH_PUT", .expr = {"method","PUT",""}},
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]805 { .name = "METH_TRACE", .expr = {"method","TRACE",""}},
806 { .name = "HTTP_URL_ABS", .expr = {"url_reg","^[^/:]*://",""}},
807 { .name = "HTTP_URL_SLASH", .expr = {"url_beg","/",""}},
808 { .name = "HTTP_URL_STAR", .expr = {"url","*",""}},
809 { .name = "HTTP_CONTENT", .expr = {"hdr_val(content-length)","gt","0",""}},
Emeric Brunbede3d02009-06-30 17:54:00 +0200[diff] [blame]810 { .name = "RDP_COOKIE", .expr = {"req_rdp_cookie_cnt","gt","0",""}},
Willy Tarreauc6317702008-07-20 09:29:50 +0200[diff] [blame]811 { .name = "REQ_CONTENT", .expr = {"req_len","gt","0",""}},
Willy Tarreaub6fb4202008-07-20 11:18:28 +0200[diff] [blame]812 { .name = "WAIT_END", .expr = {"wait_end",""}},
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]813 { .name = NULL, .expr = {""}}
814};
815
816/* Find a default ACL from the default_acl list, compile it and return it.
817 * If the ACL is not found, NULL is returned. In theory, it cannot fail,
818 * except when default ACLs are broken, in which case it will return NULL.
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]819 * If <known_acl> is not NULL, the ACL will be queued at its tail. If <err> is
820 * 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]821 * pointer must be freeable or NULL. <al> is an arg_list serving as a list head
822 * to report missing dependencies.
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]823 */
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]824static struct acl *find_acl_default(const char *acl_name, struct list *known_acl,
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]825 char **err, struct arg_list *al,
826 const char *file, int line)
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]827{
828 __label__ out_return, out_free_acl_expr, out_free_name;
829 struct acl *cur_acl;
830 struct acl_expr *acl_expr;
831 char *name;
832 int index;
833
834 for (index = 0; default_acl_list[index].name != NULL; index++) {
835 if (strcmp(acl_name, default_acl_list[index].name) == 0)
836 break;
837 }
838
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]839 if (default_acl_list[index].name == NULL) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]840 memprintf(err, "no such ACL : '%s'", acl_name);
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]841 return NULL;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]842 }
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]843
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]844 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]845 if (!acl_expr) {
846 /* parse_acl_expr must have filled err here */
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]847 goto out_return;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]848 }
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]849
850 name = strdup(acl_name);
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]851 if (!name) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]852 memprintf(err, "out of memory when building default ACL '%s'", acl_name);
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]853 goto out_free_acl_expr;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]854 }
855
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]856 cur_acl = calloc(1, sizeof(*cur_acl));
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]857 if (cur_acl == NULL) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]858 memprintf(err, "out of memory when building default ACL '%s'", acl_name);
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]859 goto out_free_name;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]860 }
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]861
862 cur_acl->name = name;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]863 cur_acl->use |= acl_expr->smp->fetch->use;
864 cur_acl->val |= acl_expr->smp->fetch->val;
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]865 LIST_INIT(&cur_acl->expr);
866 LIST_ADDQ(&cur_acl->expr, &acl_expr->list);
867 if (known_acl)
868 LIST_ADDQ(known_acl, &cur_acl->list);
869
870 return cur_acl;
871
872 out_free_name:
873 free(name);
874 out_free_acl_expr:
875 prune_acl_expr(acl_expr);
876 free(acl_expr);
877 out_return:
878 return NULL;
879}
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]880
881/* Purge everything in the acl_cond <cond>, then return <cond>. */
882struct acl_cond *prune_acl_cond(struct acl_cond *cond)
883{
884 struct acl_term_suite *suite, *tmp_suite;
885 struct acl_term *term, *tmp_term;
886
887 /* iterate through all term suites and free all terms and all suites */
888 list_for_each_entry_safe(suite, tmp_suite, &cond->suites, list) {
889 list_for_each_entry_safe(term, tmp_term, &suite->terms, list)
890 free(term);
891 free(suite);
892 }
893 return cond;
894}
895
896/* Parse an ACL condition starting at <args>[0], relying on a list of already
897 * known ACLs passed in <known_acl>. The new condition is returned (or NULL in
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]898 * case of low memory). Supports multiple conditions separated by "or". If
899 * <err> is not NULL, it will be filled with a pointer to an error message in
900 * case of error, that the caller is responsible for freeing. The initial
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]901 * location must either be freeable or NULL. The list <al> serves as a list head
902 * for unresolved dependencies.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]903 */
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]904struct acl_cond *parse_acl_cond(const char **args, struct list *known_acl,
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]905 enum acl_cond_pol pol, char **err, struct arg_list *al,
906 const char *file, int line)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]907{
908 __label__ out_return, out_free_suite, out_free_term;
Willy Tarreau74b98a82007-06-16 19:35:18 +0200[diff] [blame]909 int arg, neg;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]910 const char *word;
911 struct acl *cur_acl;
912 struct acl_term *cur_term;
913 struct acl_term_suite *cur_suite;
914 struct acl_cond *cond;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]915 unsigned int suite_val;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]916
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]917 cond = calloc(1, sizeof(*cond));
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]918 if (cond == NULL) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]919 memprintf(err, "out of memory when parsing condition");
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]920 goto out_return;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]921 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]922
923 LIST_INIT(&cond->list);
924 LIST_INIT(&cond->suites);
925 cond->pol = pol;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]926 cond->val = 0;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]927
928 cur_suite = NULL;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]929 suite_val = ~0U;
Willy Tarreau74b98a82007-06-16 19:35:18 +0200[diff] [blame]930 neg = 0;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]931 for (arg = 0; *args[arg]; arg++) {
932 word = args[arg];
933
934 /* remove as many exclamation marks as we can */
935 while (*word == '!') {
936 neg = !neg;
937 word++;
938 }
939
940 /* an empty word is allowed because we cannot force the user to
941 * always think about not leaving exclamation marks alone.
942 */
943 if (!*word)
944 continue;
945
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]946 if (strcasecmp(word, "or") == 0 || strcmp(word, "||") == 0) {
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]947 /* new term suite */
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]948 cond->val |= suite_val;
949 suite_val = ~0U;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]950 cur_suite = NULL;
951 neg = 0;
952 continue;
953 }
954
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]955 if (strcmp(word, "{") == 0) {
956 /* we may have a complete ACL expression between two braces,
957 * find the last one.
958 */
959 int arg_end = arg + 1;
960 const char **args_new;
961
962 while (*args[arg_end] && strcmp(args[arg_end], "}") != 0)
963 arg_end++;
964
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]965 if (!*args[arg_end]) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]966 memprintf(err, "missing closing '}' in condition");
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]967 goto out_free_suite;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]968 }
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]969
970 args_new = calloc(1, (arg_end - arg + 1) * sizeof(*args_new));
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]971 if (!args_new) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]972 memprintf(err, "out of memory when parsing condition");
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]973 goto out_free_suite;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]974 }
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]975
Willy Tarreau2a56c5e2010-03-15 16:13:29 +0100[diff] [blame]976 args_new[0] = "";
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]977 memcpy(args_new + 1, args + arg + 1, (arg_end - arg) * sizeof(*args_new));
978 args_new[arg_end - arg] = "";
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]979 cur_acl = parse_acl(args_new, known_acl, err, al, file, line);
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]980 free(args_new);
981
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]982 if (!cur_acl) {
983 /* note that parse_acl() must have filled <err> here */
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]984 goto out_free_suite;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]985 }
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]986 word = args[arg + 1];
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]987 arg = arg_end;
988 }
989 else {
990 /* search for <word> in the known ACL names. If we do not find
991 * it, let's look for it in the default ACLs, and if found, add
992 * it to the list of ACLs of this proxy. This makes it possible
993 * to override them.
994 */
995 cur_acl = find_acl_by_name(word, known_acl);
996 if (cur_acl == NULL) {
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]997 cur_acl = find_acl_default(word, known_acl, err, al, file, line);
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]998 if (cur_acl == NULL) {
999 /* note that find_acl_default() must have filled <err> here */
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]1000 goto out_free_suite;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1001 }
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]1002 }
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]1003 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1004
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]1005 cur_term = calloc(1, sizeof(*cur_term));
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1006 if (cur_term == NULL) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]1007 memprintf(err, "out of memory when parsing condition");
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1008 goto out_free_suite;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1009 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1010
1011 cur_term->acl = cur_acl;
1012 cur_term->neg = neg;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1013
1014 /* Here it is a bit complex. The acl_term_suite is a conjunction
1015 * of many terms. It may only be used if all of its terms are
1016 * usable at the same time. So the suite's validity domain is an
1017 * AND between all ACL keywords' ones. But, the global condition
1018 * is valid if at least one term suite is OK. So it's an OR between
1019 * all of their validity domains. We could emit a warning as soon
1020 * as suite_val is null because it means that the last ACL is not
1021 * compatible with the previous ones. Let's remain simple for now.
1022 */
1023 cond->use |= cur_acl->use;
1024 suite_val &= cur_acl->val;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1025
1026 if (!cur_suite) {
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]1027 cur_suite = calloc(1, sizeof(*cur_suite));
Willy Tarreauf678b7f2013-01-24 00:25:39 +0100[diff] [blame]1028 if (cur_suite == NULL) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]1029 memprintf(err, "out of memory when parsing condition");
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1030 goto out_free_term;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1031 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1032 LIST_INIT(&cur_suite->terms);
1033 LIST_ADDQ(&cond->suites, &cur_suite->list);
1034 }
1035 LIST_ADDQ(&cur_suite->terms, &cur_term->list);
Willy Tarreau74b98a82007-06-16 19:35:18 +0200[diff] [blame]1036 neg = 0;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1037 }
1038
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1039 cond->val |= suite_val;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1040 return cond;
1041
1042 out_free_term:
1043 free(cur_term);
1044 out_free_suite:
1045 prune_acl_cond(cond);
1046 free(cond);
1047 out_return:
1048 return NULL;
1049}
1050
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1051/* Builds an ACL condition starting at the if/unless keyword. The complete
1052 * condition is returned. NULL is returned in case of error or if the first
1053 * word is neither "if" nor "unless". It automatically sets the file name and
Willy Tarreau25320b22013-03-24 07:22:08 +0100[diff] [blame]1054 * the line number in the condition for better error reporting, and sets the
1055 * HTTP intiailization requirements in the proxy. If <err> is not NULL, it will
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1056 * be filled with a pointer to an error message in case of error, that the
1057 * caller is responsible for freeing. The initial location must either be
1058 * freeable or NULL.
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1059 */
Christopher Faulet1b421ea2017-09-22 14:38:56 +0200[diff] [blame]1060struct acl_cond *build_acl_cond(const char *file, int line, struct list *known_acl,
1061 struct proxy *px, const char **args, char **err)
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1062{
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]1063 enum acl_cond_pol pol = ACL_COND_NONE;
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1064 struct acl_cond *cond = NULL;
1065
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1066 if (err)
1067 *err = NULL;
1068
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1069 if (!strcmp(*args, "if")) {
1070 pol = ACL_COND_IF;
1071 args++;
1072 }
1073 else if (!strcmp(*args, "unless")) {
1074 pol = ACL_COND_UNLESS;
1075 args++;
1076 }
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1077 else {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]1078 memprintf(err, "conditions must start with either 'if' or 'unless'");
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1079 return NULL;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1080 }
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1081
Christopher Faulet1b421ea2017-09-22 14:38:56 +0200[diff] [blame]1082 cond = parse_acl_cond(args, known_acl, pol, err, &px->conf.args, file, line);
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1083 if (!cond) {
1084 /* note that parse_acl_cond must have filled <err> here */
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1085 return NULL;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1086 }
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1087
1088 cond->file = file;
1089 cond->line = line;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1090 px->http_needed |= !!(cond->use & SMP_USE_HTTP_ANY);
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1091 return cond;
1092}
1093
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1094/* Execute condition <cond> and return either ACL_TEST_FAIL, ACL_TEST_MISS or
1095 * ACL_TEST_PASS depending on the test results. ACL_TEST_MISS may only be
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]1096 * returned if <opt> does not contain SMP_OPT_FINAL, indicating that incomplete
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1097 * data is being examined. The function automatically sets SMP_OPT_ITERATE. This
1098 * function only computes the condition, it does not apply the polarity required
1099 * 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]1100 *
1101 * res = acl_pass(res);
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1102 * if (res == ACL_TEST_MISS)
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1103 * return 0;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1104 * if (cond->pol == ACL_COND_UNLESS)
1105 * res = !res;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1106 */
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]1107enum 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]1108{
1109 __label__ fetch_next;
1110 struct acl_term_suite *suite;
1111 struct acl_term *term;
1112 struct acl_expr *expr;
1113 struct acl *acl;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]1114 struct sample smp;
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]1115 enum acl_test_res acl_res, suite_res, cond_res;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1116
Willy Tarreau7a777ed2012-04-26 11:44:02 +0200[diff] [blame]1117 /* ACLs are iterated over all values, so let's always set the flag to
1118 * indicate this to the fetch functions.
1119 */
1120 opt |= SMP_OPT_ITERATE;
1121
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1122 /* We're doing a logical OR between conditions so we initialize to FAIL.
1123 * The MISS status is propagated down from the suites.
1124 */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1125 cond_res = ACL_TEST_FAIL;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1126 list_for_each_entry(suite, &cond->suites, list) {
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1127 /* Evaluate condition suite <suite>. We stop at the first term
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]1128 * which returns ACL_TEST_FAIL. The MISS status is still propagated
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1129 * in case of uncertainty in the result.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1130 */
1131
1132 /* we're doing a logical AND between terms, so we must set the
1133 * initial value to PASS.
1134 */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1135 suite_res = ACL_TEST_PASS;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1136 list_for_each_entry(term, &suite->terms, list) {
1137 acl = term->acl;
1138
1139 /* FIXME: use cache !
1140 * check acl->cache_idx for this.
1141 */
1142
1143 /* ACL result not cached. Let's scan all the expressions
1144 * and use the first one to match.
1145 */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1146 acl_res = ACL_TEST_FAIL;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1147 list_for_each_entry(expr, &acl->expr, list) {
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]1148 /* we need to reset context and flags */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]1149 memset(&smp, 0, sizeof(smp));
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1150 fetch_next:
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]1151 if (!sample_process(px, sess, strm, opt, expr->smp, &smp)) {
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1152 /* maybe we could not fetch because of missing data */
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]1153 if (smp.flags & SMP_F_MAY_CHANGE && !(opt & SMP_OPT_FINAL))
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1154 acl_res |= ACL_TEST_MISS;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1155 continue;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1156 }
Willy Tarreauc4262962010-05-10 23:42:40 +0200[diff] [blame]1157
Thierry FOURNIER1794fdf2014-01-17 15:25:13 +0100[diff] [blame]1158 acl_res |= pat2acl(pattern_exec_match(&expr->pat, &smp, 0));
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1159 /*
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1160 * OK now acl_res holds the result of this expression
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1161 * as one of ACL_TEST_FAIL, ACL_TEST_MISS or ACL_TEST_PASS.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1162 *
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1163 * Then if (!MISS) we can cache the result, and put
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]1164 * (smp.flags & SMP_F_VOLATILE) in the cache flags.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1165 *
1166 * FIXME: implement cache.
1167 *
1168 */
1169
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1170 /* we're ORing these terms, so a single PASS is enough */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1171 if (acl_res == ACL_TEST_PASS)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1172 break;
1173
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]1174 if (smp.flags & SMP_F_NOT_LAST)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1175 goto fetch_next;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1176
1177 /* sometimes we know the fetched data is subject to change
1178 * later and give another chance for a new match (eg: request
1179 * size, time, ...)
1180 */
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]1181 if (smp.flags & SMP_F_MAY_CHANGE && !(opt & SMP_OPT_FINAL))
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1182 acl_res |= ACL_TEST_MISS;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1183 }
1184 /*
1185 * Here we have the result of an ACL (cached or not).
1186 * ACLs are combined, negated or not, to form conditions.
1187 */
1188
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1189 if (term->neg)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1190 acl_res = acl_neg(acl_res);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1191
1192 suite_res &= acl_res;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1193
Willy Tarreau79c412b2013-10-30 19:30:32 +0100[diff] [blame]1194 /* we're ANDing these terms, so a single FAIL or MISS is enough */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1195 if (suite_res != ACL_TEST_PASS)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1196 break;
1197 }
1198 cond_res |= suite_res;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1199
1200 /* we're ORing these terms, so a single PASS is enough */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1201 if (cond_res == ACL_TEST_PASS)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1202 break;
1203 }
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1204 return cond_res;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1205}
1206
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1207/* Returns a pointer to the first ACL conflicting with usage at place <where>
1208 * which is one of the SMP_VAL_* bits indicating a check place, or NULL if
1209 * no conflict is found. Only full conflicts are detected (ACL is not usable).
1210 * Use the next function to check for useless keywords.
Willy Tarreaudd64f8d2008-07-27 22:02:32 +0200[diff] [blame]1211 */
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1212const struct acl *acl_cond_conflicts(const struct acl_cond *cond, unsigned int where)
Willy Tarreaudd64f8d2008-07-27 22:02:32 +0200[diff] [blame]1213{
1214 struct acl_term_suite *suite;
1215 struct acl_term *term;
1216 struct acl *acl;
1217
1218 list_for_each_entry(suite, &cond->suites, list) {
1219 list_for_each_entry(term, &suite->terms, list) {
1220 acl = term->acl;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1221 if (!(acl->val & where))
Willy Tarreaudd64f8d2008-07-27 22:02:32 +0200[diff] [blame]1222 return acl;
1223 }
1224 }
1225 return NULL;
1226}
1227
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1228/* Returns a pointer to the first ACL and its first keyword to conflict with
1229 * usage at place <where> which is one of the SMP_VAL_* bits indicating a check
1230 * place. Returns true if a conflict is found, with <acl> and <kw> set (if non
1231 * null), or false if not conflict is found. The first useless keyword is
1232 * returned.
1233 */
Willy Tarreau93fddf12013-03-31 22:59:32 +0200[diff] [blame]1234int 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]1235{
1236 struct acl_term_suite *suite;
1237 struct acl_term *term;
1238 struct acl_expr *expr;
1239
1240 list_for_each_entry(suite, &cond->suites, list) {
1241 list_for_each_entry(term, &suite->terms, list) {
1242 list_for_each_entry(expr, &term->acl->expr, list) {
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]1243 if (!(expr->smp->fetch->val & where)) {
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1244 if (acl)
1245 *acl = term->acl;
1246 if (kw)
1247 *kw = expr->kw;
1248 return 1;
1249 }
1250 }
1251 }
1252 }
1253 return 0;
1254}
1255
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1256/*
1257 * Find targets for userlist and groups in acl. Function returns the number
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]1258 * of errors or OK if everything is fine. It must be called only once sample
1259 * fetch arguments have been resolved (after smp_resolve_args()).
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1260 */
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]1261int acl_find_targets(struct proxy *p)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1262{
1263
1264 struct acl *acl;
1265 struct acl_expr *expr;
Thierry FOURNIER3ead5b92013-12-13 12:12:18 +0100[diff] [blame]1266 struct pattern_list *pattern;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1267 int cfgerr = 0;
Thierry FOURNIERc5959fd2014-01-20 14:29:33 +0100[diff] [blame]1268 struct pattern_expr_list *pexp;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1269
1270 list_for_each_entry(acl, &p->acl, list) {
1271 list_for_each_entry(expr, &acl->expr, list) {
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]1272 if (!strcmp(expr->kw, "http_auth_group")) {
1273 /* Note: the ARGT_USR argument may only have been resolved earlier
1274 * by smp_resolve_args().
1275 */
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]1276 if (expr->smp->arg_p->unresolved) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100[diff] [blame]1277 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]1278 p->id, *acl->name ? "" : "anonymous ", acl->name, expr->kw,
1279 expr->smp->arg_p->data.str.area);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]1280 cfgerr++;
Willy Tarreau496aa012012-06-01 10:38:29 +0200[diff] [blame]1281 continue;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1282 }
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1283
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]1284 if (LIST_ISEMPTY(&expr->pat.head)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100[diff] [blame]1285 ha_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++;
1288 continue;
1289 }
1290
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]1291 /* For each pattern, check if the group exists. */
Thierry FOURNIERc5959fd2014-01-20 14:29:33 +0100[diff] [blame]1292 list_for_each_entry(pexp, &expr->pat.head, list) {
1293 if (LIST_ISEMPTY(&pexp->expr->patterns)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100[diff] [blame]1294 ha_alert("proxy %s: acl %s %s(): no groups specified.\n",
1295 p->id, acl->name, expr->kw);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1296 cfgerr++;
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]1297 continue;
1298 }
1299
Thierry FOURNIERc5959fd2014-01-20 14:29:33 +0100[diff] [blame]1300 list_for_each_entry(pattern, &pexp->expr->patterns, list) {
1301 /* this keyword only has one argument */
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]1302 if (!check_group(expr->smp->arg_p->data.usr, pattern->pat.ptr.str)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100[diff] [blame]1303 ha_alert("proxy %s: acl %s %s(): invalid group '%s'.\n",
1304 p->id, acl->name, expr->kw, pattern->pat.ptr.str);
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]1305 cfgerr++;
1306 }
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1307 }
1308 }
1309 }
1310 }
1311 }
1312
1313 return cfgerr;
1314}
Willy Tarreaudd64f8d2008-07-27 22:02:32 +0200[diff] [blame]1315
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]1316/* initializes ACLs by resolving the sample fetch names they rely upon.
1317 * Returns 0 on success, otherwise an error.
1318 */
1319int init_acl()
1320{
1321 int err = 0;
1322 int index;
1323 const char *name;
1324 struct acl_kw_list *kwl;
1325 struct sample_fetch *smp;
1326
1327 list_for_each_entry(kwl, &acl_keywords.list, list) {
1328 for (index = 0; kwl->kw[index].kw != NULL; index++) {
1329 name = kwl->kw[index].fetch_kw;
1330 if (!name)
1331 name = kwl->kw[index].kw;
1332
1333 smp = find_sample_fetch(name, strlen(name));
1334 if (!smp) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100[diff] [blame]1335 ha_alert("Critical internal error: ACL keyword '%s' relies on sample fetch '%s' which was not registered!\n",
1336 kwl->kw[index].kw, name);
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]1337 err++;
1338 continue;
1339 }
1340 kwl->kw[index].smp = smp;
1341 }
1342 }
1343 return err;
1344}
Willy Tarreaud4c33c82013-01-07 21:59:07 +0100[diff] [blame]1345
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1346/************************************************************************/
Willy Tarreaud4c33c82013-01-07 21:59:07 +0100[diff] [blame]1347/* All supported sample and ACL keywords must be declared here. */
1348/************************************************************************/
1349
1350/* Note: must not be declared <const> as its list will be overwritten.
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]1351 * Please take care of keeping this list alphabetically sorted.
1352 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]1353static struct acl_kw_list acl_kws = {ILH, {
Willy Tarreaud4c33c82013-01-07 21:59:07 +0100[diff] [blame]1354 { /* END */ },
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1355}};
1356
Willy Tarreau0108d902018-11-25 19:14:37 +0100[diff] [blame]1357INITCALL1(STG_REGISTER, acl_register_keywords, &acl_kws);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1358
1359/*
1360 * Local variables:
1361 * c-indent-level: 8
1362 * c-basic-offset: 8
1363 * End:
1364 */