Gitiles
Code Review Sign In
git01.mediatek.com / haproxy / ae6f125c7b33454770aaa363101384e8daafc2a2 / . / src / acl.c
blob: 209580a11dfed0d1043529bc4e640a0c4aabdc60 [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 }
Christopher Faulet361935a2019-09-13 09:50:15 +0200[diff] [blame]345 free(ckw);
346 ckw = NULL;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]347 }
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]348 else {
349 /* This is not an ACL keyword, so we hope this is a sample fetch
350 * keyword that we're going to transparently use as an ACL. If
351 * so, we retrieve a completely parsed expression with args and
352 * convs already done.
353 */
Thierry FOURNIEReeaa9512014-02-11 14:00:19 +0100[diff] [blame]354 smp = sample_parse_expr((char **)args, &idx, file, line, err, al);
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]355 if (!smp) {
356 memprintf(err, "%s in ACL expression '%s'", *err, *args);
357 goto out_return;
358 }
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]359 cur_type = smp_expr_output_type(smp);
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]360 }
361
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]362 expr = calloc(1, sizeof(*expr));
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]363 if (!expr) {
364 memprintf(err, "out of memory when parsing ACL expression");
Christopher Faulet361935a2019-09-13 09:50:15 +0200[diff] [blame]365 goto out_free_smp;
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]366 }
367
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]368 pattern_init_head(&expr->pat);
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]369
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]370 expr->pat.expect_type = cur_type;
371 expr->smp = smp;
372 expr->kw = smp->fetch->kw;
373 smp = NULL; /* don't free it anymore */
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]374
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]375 if (aclkw && !acl_conv_found) {
376 expr->kw = aclkw->kw;
377 expr->pat.parse = aclkw->parse ? aclkw->parse : pat_parse_fcts[aclkw->match_type];
378 expr->pat.index = aclkw->index ? aclkw->index : pat_index_fcts[aclkw->match_type];
379 expr->pat.match = aclkw->match ? aclkw->match : pat_match_fcts[aclkw->match_type];
380 expr->pat.delete = aclkw->delete ? aclkw->delete : pat_delete_fcts[aclkw->match_type];
381 expr->pat.prune = aclkw->prune ? aclkw->prune : pat_prune_fcts[aclkw->match_type];
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]382 }
383
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]384 if (!expr->pat.parse) {
Willy Tarreauaa4e32e2014-08-29 19:09:48 +0200[diff] [blame]385 /* Parse/index/match functions depend on the expression type,
386 * so we have to map them now. Some types can be automatically
387 * converted.
388 */
389 switch (cur_type) {
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]390 case SMP_T_BOOL:
391 expr->pat.parse = pat_parse_fcts[PAT_MATCH_BOOL];
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]392 expr->pat.index = pat_index_fcts[PAT_MATCH_BOOL];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]393 expr->pat.match = pat_match_fcts[PAT_MATCH_BOOL];
Thierry FOURNIERb1136502014-01-15 11:38:49 +0100[diff] [blame]394 expr->pat.delete = pat_delete_fcts[PAT_MATCH_BOOL];
Thierry FOURNIER6f7203d2014-01-14 16:24:51 +0100[diff] [blame]395 expr->pat.prune = pat_prune_fcts[PAT_MATCH_BOOL];
Thierry FOURNIER5d344082014-01-27 14:19:53 +0100[diff] [blame]396 expr->pat.expect_type = pat_match_types[PAT_MATCH_BOOL];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]397 break;
398 case SMP_T_SINT:
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]399 expr->pat.parse = pat_parse_fcts[PAT_MATCH_INT];
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]400 expr->pat.index = pat_index_fcts[PAT_MATCH_INT];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]401 expr->pat.match = pat_match_fcts[PAT_MATCH_INT];
Thierry FOURNIERb1136502014-01-15 11:38:49 +0100[diff] [blame]402 expr->pat.delete = pat_delete_fcts[PAT_MATCH_INT];
Thierry FOURNIER6f7203d2014-01-14 16:24:51 +0100[diff] [blame]403 expr->pat.prune = pat_prune_fcts[PAT_MATCH_INT];
Thierry FOURNIER5d344082014-01-27 14:19:53 +0100[diff] [blame]404 expr->pat.expect_type = pat_match_types[PAT_MATCH_INT];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]405 break;
Willy Tarreau78c5eec2019-04-19 11:45:20 +0200[diff] [blame]406 case SMP_T_ADDR:
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]407 case SMP_T_IPV4:
408 case SMP_T_IPV6:
409 expr->pat.parse = pat_parse_fcts[PAT_MATCH_IP];
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]410 expr->pat.index = pat_index_fcts[PAT_MATCH_IP];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]411 expr->pat.match = pat_match_fcts[PAT_MATCH_IP];
Thierry FOURNIERb1136502014-01-15 11:38:49 +0100[diff] [blame]412 expr->pat.delete = pat_delete_fcts[PAT_MATCH_IP];
Thierry FOURNIER6f7203d2014-01-14 16:24:51 +0100[diff] [blame]413 expr->pat.prune = pat_prune_fcts[PAT_MATCH_IP];
Thierry FOURNIER5d344082014-01-27 14:19:53 +0100[diff] [blame]414 expr->pat.expect_type = pat_match_types[PAT_MATCH_IP];
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]415 break;
Thierry FOURNIER9fefbd52014-05-11 15:15:00 +0200[diff] [blame]416 case SMP_T_STR:
417 expr->pat.parse = pat_parse_fcts[PAT_MATCH_STR];
418 expr->pat.index = pat_index_fcts[PAT_MATCH_STR];
419 expr->pat.match = pat_match_fcts[PAT_MATCH_STR];
420 expr->pat.delete = pat_delete_fcts[PAT_MATCH_STR];
421 expr->pat.prune = pat_prune_fcts[PAT_MATCH_STR];
422 expr->pat.expect_type = pat_match_types[PAT_MATCH_STR];
423 break;
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]424 }
425 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]426
Willy Tarreau3c3dfd52013-11-04 18:09:12 +0100[diff] [blame]427 /* Additional check to protect against common mistakes */
Thierry FOURNIERd163e1c2013-11-28 11:41:23 +0100[diff] [blame]428 if (expr->pat.parse && cur_type != SMP_T_BOOL && !*args[1]) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100[diff] [blame]429 ha_warning("parsing acl keyword '%s' :\n"
430 " no pattern to match against were provided, so this ACL will never match.\n"
431 " If this is what you intended, please add '--' to get rid of this warning.\n"
432 " If you intended to match only for existence, please use '-m found'.\n"
433 " If you wanted to force an int to match as a bool, please use '-m bool'.\n"
434 "\n",
435 args[0]);
Willy Tarreau3c3dfd52013-11-04 18:09:12 +0100[diff] [blame]436 }
437
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]438 args++;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]439
440 /* check for options before patterns. Supported options are :
441 * -i : ignore case for all patterns by default
442 * -f : read patterns from those files
Willy Tarreau5adeda12013-03-31 22:13:34 +0200[diff] [blame]443 * -m : force matching method (must be used before -f)
Thierry FOURNIER9860c412014-01-29 14:23:29 +0100[diff] [blame]444 * -M : load the file as map file
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]445 * -u : force the unique id of the acl
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]446 * -- : everything after this is not an option
447 */
Christopher Faulet54ceb042017-06-14 14:41:33 +0200[diff] [blame]448 refflags = PAT_REF_ACL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]449 patflags = 0;
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]450 is_loaded = 0;
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]451 unique_id = -1;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]452 while (**args == '-') {
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]453 if (strcmp(*args, "-i") == 0)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]454 patflags |= PAT_MF_IGNORE_CASE;
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]455 else if (strcmp(*args, "-n") == 0)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]456 patflags |= PAT_MF_NO_DNS;
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]457 else if (strcmp(*args, "-u") == 0) {
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]458 unique_id = strtol(args[1], &error, 10);
459 if (*error != '\0') {
460 memprintf(err, "the argument of -u must be an integer");
461 goto out_free_expr;
462 }
463
464 /* Check if this id is really unique. */
465 if (pat_ref_lookupid(unique_id)) {
466 memprintf(err, "the id is already used");
467 goto out_free_expr;
468 }
469
470 args++;
471 }
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]472 else if (strcmp(*args, "-f") == 0) {
Thierry FOURNIERd163e1c2013-11-28 11:41:23 +0100[diff] [blame]473 if (!expr->pat.parse) {
Willy Tarreau9987ea92013-06-11 21:09:06 +0200[diff] [blame]474 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]475 goto out_free_expr;
476 }
477
Christopher Faulet54ceb042017-06-14 14:41:33 +0200[diff] [blame]478 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]479 goto out_free_expr;
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]480 is_loaded = 1;
Willy Tarreau5adeda12013-03-31 22:13:34 +0200[diff] [blame]481 args++;
482 }
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]483 else if (strcmp(*args, "-m") == 0) {
Willy Tarreau5adeda12013-03-31 22:13:34 +0200[diff] [blame]484 int idx;
485
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]486 if (is_loaded) {
Willy Tarreau5adeda12013-03-31 22:13:34 +0200[diff] [blame]487 memprintf(err, "'-m' must only be specified before patterns and files in parsing ACL expression");
488 goto out_free_expr;
489 }
490
Willy Tarreau6f8fe312013-11-28 22:24:25 +0100[diff] [blame]491 idx = pat_find_match_name(args[1]);
Willy Tarreau5adeda12013-03-31 22:13:34 +0200[diff] [blame]492 if (idx < 0) {
493 memprintf(err, "unknown matching method '%s' when parsing ACL expression", args[1]);
494 goto out_free_expr;
495 }
496
497 /* 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]498 if (idx != PAT_MATCH_FOUND && !sample_casts[cur_type][pat_match_types[idx]]) {
Willy Tarreau93fddf12013-03-31 22:59:32 +0200[diff] [blame]499 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]500 goto out_free_expr;
501 }
Thierry FOURNIERe3ded592013-12-06 15:36:54 +0100[diff] [blame]502 expr->pat.parse = pat_parse_fcts[idx];
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]503 expr->pat.index = pat_index_fcts[idx];
Thierry FOURNIERe3ded592013-12-06 15:36:54 +0100[diff] [blame]504 expr->pat.match = pat_match_fcts[idx];
Thierry FOURNIERb1136502014-01-15 11:38:49 +0100[diff] [blame]505 expr->pat.delete = pat_delete_fcts[idx];
Thierry FOURNIER6f7203d2014-01-14 16:24:51 +0100[diff] [blame]506 expr->pat.prune = pat_prune_fcts[idx];
Thierry FOURNIER5d344082014-01-27 14:19:53 +0100[diff] [blame]507 expr->pat.expect_type = pat_match_types[idx];
Willy Tarreau2b5285d2010-05-09 23:45:24 +0200[diff] [blame]508 args++;
509 }
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]510 else if (strcmp(*args, "-M") == 0) {
Christopher Faulet54ceb042017-06-14 14:41:33 +0200[diff] [blame]511 refflags |= PAT_REF_MAP;
Thierry FOURNIER9860c412014-01-29 14:23:29 +0100[diff] [blame]512 load_as_map = 1;
513 }
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]514 else if (strcmp(*args, "--") == 0) {
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]515 args++;
516 break;
517 }
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]518 else {
519 memprintf(err, "'%s' is not a valid ACL option. Please use '--' before any pattern beginning with a '-'", args[0]);
520 goto out_free_expr;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]521 break;
Willy Tarreau2039bba2014-05-11 09:43:46 +0200[diff] [blame]522 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]523 args++;
524 }
525
Thierry FOURNIERd163e1c2013-11-28 11:41:23 +0100[diff] [blame]526 if (!expr->pat.parse) {
Willy Tarreau9987ea92013-06-11 21:09:06 +0200[diff] [blame]527 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]528 goto out_free_expr;
529 }
530
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]531 /* Create displayed reference */
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200[diff] [blame]532 snprintf(trash.area, trash.size, "acl '%s' file '%s' line %d",
533 expr->kw, file, line);
534 trash.area[trash.size - 1] = '\0';
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]535
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]536 /* Create new patern reference. */
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200[diff] [blame]537 ref = pat_ref_newid(unique_id, trash.area, PAT_REF_ACL);
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]538 if (!ref) {
539 memprintf(err, "memory error");
540 goto out_free_expr;
541 }
542
543 /* Create new pattern expression associated to this reference. */
Emeric Brun7d27f3c2017-07-03 17:54:23 +0200[diff] [blame]544 pattern_expr = pattern_new_expr(&expr->pat, ref, patflags, err, NULL);
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]545 if (!pattern_expr)
546 goto out_free_expr;
547
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]548 /* now parse all patterns */
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]549 while (**args) {
550 arg = *args;
551
552 /* Compatibility layer. Each pattern can parse only one string per pattern,
553 * but the pat_parser_int() and pat_parse_dotted_ver() parsers were need
554 * optionnaly two operators. The first operator is the match method: eq,
555 * le, lt, ge and gt. pat_parse_int() and pat_parse_dotted_ver() functions
556 * can have a compatibility syntax based on ranges:
557 *
558 * pat_parse_int():
559 *
560 * "eq x" -> "x" or "x:x"
561 * "le x" -> ":x"
562 * "lt x" -> ":y" (with y = x - 1)
563 * "ge x" -> "x:"
564 * "gt x" -> "y:" (with y = x + 1)
565 *
566 * pat_parse_dotted_ver():
567 *
568 * "eq x.y" -> "x.y" or "x.y:x.y"
569 * "le x.y" -> ":x.y"
570 * "lt x.y" -> ":w.z" (with w.z = x.y - 1)
571 * "ge x.y" -> "x.y:"
572 * "gt x.y" -> "w.z:" (with w.z = x.y + 1)
573 *
574 * If y is not present, assume that is "0".
575 *
576 * The syntax eq, le, lt, ge and gt are proper to the acl syntax. The
577 * following block of code detect the operator, and rewrite each value
578 * in parsable string.
579 */
580 if (expr->pat.parse == pat_parse_int ||
581 expr->pat.parse == pat_parse_dotted_ver) {
582 /* Check for operator. If the argument is operator, memorise it and
583 * continue to the next argument.
584 */
585 op = get_std_op(arg);
586 if (op != -1) {
587 operator = op;
588 args++;
589 continue;
590 }
591
592 /* Check if the pattern contain ':' or '-' character. */
593 contain_colon = (strchr(arg, ':') || strchr(arg, '-'));
594
595 /* If the pattern contain ':' or '-' character, give it to the parser as is.
596 * If no contain ':' and operator is STD_OP_EQ, give it to the parser as is.
597 * In other case, try to convert the value according with the operator.
598 */
599 if (!contain_colon && operator != STD_OP_EQ) {
600 /* Search '.' separator. */
601 dot = strchr(arg, '.');
602 if (!dot) {
603 have_dot = 0;
604 minor = 0;
605 dot = arg + strlen(arg);
606 }
607 else
608 have_dot = 1;
609
610 /* convert the integer minor part for the pat_parse_dotted_ver() function. */
611 if (expr->pat.parse == pat_parse_dotted_ver && have_dot) {
612 if (strl2llrc(dot+1, strlen(dot+1), &minor) != 0) {
613 memprintf(err, "'%s' is neither a number nor a supported operator", arg);
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]614 goto out_free_expr;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]615 }
616 if (minor >= 65536) {
617 memprintf(err, "'%s' contains too large a minor value", arg);
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]618 goto out_free_expr;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]619 }
620 }
621
622 /* convert the integer value for the pat_parse_int() function, and the
623 * integer major part for the pat_parse_dotted_ver() function.
624 */
625 if (strl2llrc(arg, dot - arg, &value) != 0) {
626 memprintf(err, "'%s' is neither a number nor a supported operator", arg);
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]627 goto out_free_expr;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]628 }
629 if (expr->pat.parse == pat_parse_dotted_ver) {
630 if (value >= 65536) {
631 memprintf(err, "'%s' contains too large a major value", arg);
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]632 goto out_free_expr;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]633 }
634 value = (value << 16) | (minor & 0xffff);
635 }
636
637 switch (operator) {
638
639 case STD_OP_EQ: /* this case is not possible. */
640 memprintf(err, "internal error");
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]641 goto out_free_expr;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]642
643 case STD_OP_GT:
644 value++; /* gt = ge + 1 */
645
646 case STD_OP_GE:
647 if (expr->pat.parse == pat_parse_int)
648 snprintf(buffer, NB_LLMAX_STR+NB_LLMAX_STR+2, "%lld:", value);
649 else
650 snprintf(buffer, NB_LLMAX_STR+NB_LLMAX_STR+2, "%lld.%lld:",
651 value >> 16, value & 0xffff);
652 arg = buffer;
653 break;
654
655 case STD_OP_LT:
656 value--; /* lt = le - 1 */
657
658 case STD_OP_LE:
659 if (expr->pat.parse == pat_parse_int)
660 snprintf(buffer, NB_LLMAX_STR+NB_LLMAX_STR+2, ":%lld", value);
661 else
662 snprintf(buffer, NB_LLMAX_STR+NB_LLMAX_STR+2, ":%lld.%lld",
663 value >> 16, value & 0xffff);
664 arg = buffer;
665 break;
666 }
667 }
668 }
669
Thierry FOURNIER3534d882014-01-20 17:01:44 +0100[diff] [blame]670 /* Add sample to the reference, and try to compile it fior each pattern
671 * using this value.
672 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]673 if (!pat_ref_add(ref, arg, NULL, err))
Thierry FOURNIERb9b08462013-12-13 15:12:32 +0100[diff] [blame]674 goto out_free_expr;
Thierry FOURNIER511e9472014-01-23 17:40:34 +0100[diff] [blame]675 args++;
676 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]677
678 return expr;
679
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]680 out_free_expr:
681 prune_acl_expr(expr);
682 free(expr);
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]683 out_free_smp:
Christopher Faulet361935a2019-09-13 09:50:15 +0200[diff] [blame]684 free(ckw);
Willy Tarreauc37a3c72013-12-13 01:24:09 +0100[diff] [blame]685 free(smp);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]686 out_return:
687 return NULL;
688}
689
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200[diff] [blame]690/* Purge everything in the acl <acl>, then return <acl>. */
691struct acl *prune_acl(struct acl *acl) {
692
693 struct acl_expr *expr, *exprb;
694
695 free(acl->name);
696
697 list_for_each_entry_safe(expr, exprb, &acl->expr, list) {
698 LIST_DEL(&expr->list);
699 prune_acl_expr(expr);
700 free(expr);
701 }
702
703 return acl;
704}
705
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]706/* Parse an ACL with the name starting at <args>[0], and with a list of already
707 * 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]708 * 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]709 * an anonymous one and it won't be merged with any other one. If <err> is not
710 * NULL, it will be filled with an appropriate error. This pointer must be
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]711 * freeable or NULL. <al> is the arg_list serving as a head for unresolved
712 * dependencies.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]713 *
714 * args syntax: <aclname> <acl_expr>
715 */
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]716struct acl *parse_acl(const char **args, struct list *known_acl, char **err, struct arg_list *al,
717 const char *file, int line)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]718{
719 __label__ out_return, out_free_acl_expr, out_free_name;
720 struct acl *cur_acl;
721 struct acl_expr *acl_expr;
722 char *name;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]723 const char *pos;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]724
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]725 if (**args && (pos = invalid_char(*args))) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]726 memprintf(err, "invalid character in ACL name : '%c'", *pos);
Willy Tarreau2e74c3f2007-12-02 18:45:09 +0100[diff] [blame]727 goto out_return;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]728 }
Willy Tarreau2e74c3f2007-12-02 18:45:09 +0100[diff] [blame]729
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]730 acl_expr = parse_acl_expr(args + 1, err, al, file, line);
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]731 if (!acl_expr) {
732 /* parse_acl_expr will have filled <err> here */
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]733 goto out_return;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]734 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]735
Willy Tarreau404e8ab2009-07-26 19:40:40 +0200[diff] [blame]736 /* Check for args beginning with an opening parenthesis just after the
737 * subject, as this is almost certainly a typo. Right now we can only
738 * emit a warning, so let's do so.
739 */
Krzysztof Piotr Oledzki4cdd8312009-10-05 00:23:35 +0200[diff] [blame]740 if (!strchr(args[1], '(') && *args[2] == '(')
Christopher Faulet767a84b2017-11-24 16:50:31 +0100[diff] [blame]741 ha_warning("parsing acl '%s' :\n"
742 " matching '%s' for pattern '%s' is likely a mistake and probably\n"
743 " not what you want. Maybe you need to remove the extraneous space before '('.\n"
744 " If you are really sure this is not an error, please insert '--' between the\n"
745 " match and the pattern to make this warning message disappear.\n",
746 args[0], args[1], args[2]);
Willy Tarreau404e8ab2009-07-26 19:40:40 +0200[diff] [blame]747
Willy Tarreau2a56c5e2010-03-15 16:13:29 +0100[diff] [blame]748 if (*args[0])
749 cur_acl = find_acl_by_name(args[0], known_acl);
750 else
751 cur_acl = NULL;
752
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]753 if (!cur_acl) {
754 name = strdup(args[0]);
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]755 if (!name) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]756 memprintf(err, "out of memory when parsing ACL");
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]757 goto out_free_acl_expr;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]758 }
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]759 cur_acl = calloc(1, sizeof(*cur_acl));
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]760 if (cur_acl == NULL) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]761 memprintf(err, "out of memory when parsing ACL");
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]762 goto out_free_name;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]763 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]764
765 LIST_INIT(&cur_acl->expr);
766 LIST_ADDQ(known_acl, &cur_acl->list);
767 cur_acl->name = name;
768 }
769
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]770 /* We want to know what features the ACL needs (typically HTTP parsing),
771 * and where it may be used. If an ACL relies on multiple matches, it is
772 * OK if at least one of them may match in the context where it is used.
773 */
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]774 cur_acl->use |= acl_expr->smp->fetch->use;
775 cur_acl->val |= acl_expr->smp->fetch->val;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]776 LIST_ADDQ(&cur_acl->expr, &acl_expr->list);
777 return cur_acl;
778
779 out_free_name:
780 free(name);
781 out_free_acl_expr:
782 prune_acl_expr(acl_expr);
783 free(acl_expr);
784 out_return:
785 return NULL;
786}
787
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]788/* Some useful ACLs provided by default. Only those used are allocated. */
789
790const struct {
791 const char *name;
792 const char *expr[4]; /* put enough for longest expression */
793} default_acl_list[] = {
Willy Tarreau58393e12008-07-20 10:39:22 +0200[diff] [blame]794 { .name = "TRUE", .expr = {"always_true",""}},
795 { .name = "FALSE", .expr = {"always_false",""}},
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]796 { .name = "LOCALHOST", .expr = {"src","127.0.0.1/8",""}},
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]797 { .name = "HTTP", .expr = {"req_proto_http",""}},
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]798 { .name = "HTTP_1.0", .expr = {"req_ver","1.0",""}},
799 { .name = "HTTP_1.1", .expr = {"req_ver","1.1",""}},
800 { .name = "METH_CONNECT", .expr = {"method","CONNECT",""}},
Daniel Schneller9ff96c72016-04-11 17:45:29 +0200[diff] [blame]801 { .name = "METH_DELETE", .expr = {"method","DELETE",""}},
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]802 { .name = "METH_GET", .expr = {"method","GET","HEAD",""}},
803 { .name = "METH_HEAD", .expr = {"method","HEAD",""}},
804 { .name = "METH_OPTIONS", .expr = {"method","OPTIONS",""}},
805 { .name = "METH_POST", .expr = {"method","POST",""}},
Daniel Schneller9ff96c72016-04-11 17:45:29 +0200[diff] [blame]806 { .name = "METH_PUT", .expr = {"method","PUT",""}},
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]807 { .name = "METH_TRACE", .expr = {"method","TRACE",""}},
808 { .name = "HTTP_URL_ABS", .expr = {"url_reg","^[^/:]*://",""}},
809 { .name = "HTTP_URL_SLASH", .expr = {"url_beg","/",""}},
810 { .name = "HTTP_URL_STAR", .expr = {"url","*",""}},
811 { .name = "HTTP_CONTENT", .expr = {"hdr_val(content-length)","gt","0",""}},
Emeric Brunbede3d02009-06-30 17:54:00 +0200[diff] [blame]812 { .name = "RDP_COOKIE", .expr = {"req_rdp_cookie_cnt","gt","0",""}},
Willy Tarreauc6317702008-07-20 09:29:50 +0200[diff] [blame]813 { .name = "REQ_CONTENT", .expr = {"req_len","gt","0",""}},
Willy Tarreaub6fb4202008-07-20 11:18:28 +0200[diff] [blame]814 { .name = "WAIT_END", .expr = {"wait_end",""}},
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]815 { .name = NULL, .expr = {""}}
816};
817
818/* Find a default ACL from the default_acl list, compile it and return it.
819 * If the ACL is not found, NULL is returned. In theory, it cannot fail,
820 * except when default ACLs are broken, in which case it will return NULL.
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]821 * If <known_acl> is not NULL, the ACL will be queued at its tail. If <err> is
822 * 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]823 * pointer must be freeable or NULL. <al> is an arg_list serving as a list head
824 * to report missing dependencies.
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]825 */
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]826static struct acl *find_acl_default(const char *acl_name, struct list *known_acl,
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]827 char **err, struct arg_list *al,
828 const char *file, int line)
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]829{
830 __label__ out_return, out_free_acl_expr, out_free_name;
831 struct acl *cur_acl;
832 struct acl_expr *acl_expr;
833 char *name;
834 int index;
835
836 for (index = 0; default_acl_list[index].name != NULL; index++) {
837 if (strcmp(acl_name, default_acl_list[index].name) == 0)
838 break;
839 }
840
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]841 if (default_acl_list[index].name == NULL) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]842 memprintf(err, "no such ACL : '%s'", acl_name);
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]843 return NULL;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]844 }
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]845
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]846 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]847 if (!acl_expr) {
848 /* parse_acl_expr must have filled err here */
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]849 goto out_return;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]850 }
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]851
852 name = strdup(acl_name);
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]853 if (!name) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]854 memprintf(err, "out of memory when building default ACL '%s'", acl_name);
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]855 goto out_free_acl_expr;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]856 }
857
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]858 cur_acl = calloc(1, sizeof(*cur_acl));
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]859 if (cur_acl == NULL) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]860 memprintf(err, "out of memory when building default ACL '%s'", acl_name);
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]861 goto out_free_name;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]862 }
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]863
864 cur_acl->name = name;
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]865 cur_acl->use |= acl_expr->smp->fetch->use;
866 cur_acl->val |= acl_expr->smp->fetch->val;
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]867 LIST_INIT(&cur_acl->expr);
868 LIST_ADDQ(&cur_acl->expr, &acl_expr->list);
869 if (known_acl)
870 LIST_ADDQ(known_acl, &cur_acl->list);
871
872 return cur_acl;
873
874 out_free_name:
875 free(name);
876 out_free_acl_expr:
877 prune_acl_expr(acl_expr);
878 free(acl_expr);
879 out_return:
880 return NULL;
881}
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]882
883/* Purge everything in the acl_cond <cond>, then return <cond>. */
884struct acl_cond *prune_acl_cond(struct acl_cond *cond)
885{
886 struct acl_term_suite *suite, *tmp_suite;
887 struct acl_term *term, *tmp_term;
888
889 /* iterate through all term suites and free all terms and all suites */
890 list_for_each_entry_safe(suite, tmp_suite, &cond->suites, list) {
891 list_for_each_entry_safe(term, tmp_term, &suite->terms, list)
892 free(term);
893 free(suite);
894 }
895 return cond;
896}
897
898/* Parse an ACL condition starting at <args>[0], relying on a list of already
899 * known ACLs passed in <known_acl>. The new condition is returned (or NULL in
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]900 * case of low memory). Supports multiple conditions separated by "or". If
901 * <err> is not NULL, it will be filled with a pointer to an error message in
902 * case of error, that the caller is responsible for freeing. The initial
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]903 * location must either be freeable or NULL. The list <al> serves as a list head
904 * for unresolved dependencies.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]905 */
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]906struct acl_cond *parse_acl_cond(const char **args, struct list *known_acl,
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]907 enum acl_cond_pol pol, char **err, struct arg_list *al,
908 const char *file, int line)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]909{
910 __label__ out_return, out_free_suite, out_free_term;
Willy Tarreau74b98a82007-06-16 19:35:18 +0200[diff] [blame]911 int arg, neg;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]912 const char *word;
913 struct acl *cur_acl;
914 struct acl_term *cur_term;
915 struct acl_term_suite *cur_suite;
916 struct acl_cond *cond;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]917 unsigned int suite_val;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]918
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]919 cond = calloc(1, sizeof(*cond));
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]920 if (cond == NULL) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]921 memprintf(err, "out of memory when parsing condition");
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]922 goto out_return;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]923 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]924
925 LIST_INIT(&cond->list);
926 LIST_INIT(&cond->suites);
927 cond->pol = pol;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]928 cond->val = 0;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]929
930 cur_suite = NULL;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]931 suite_val = ~0U;
Willy Tarreau74b98a82007-06-16 19:35:18 +0200[diff] [blame]932 neg = 0;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]933 for (arg = 0; *args[arg]; arg++) {
934 word = args[arg];
935
936 /* remove as many exclamation marks as we can */
937 while (*word == '!') {
938 neg = !neg;
939 word++;
940 }
941
942 /* an empty word is allowed because we cannot force the user to
943 * always think about not leaving exclamation marks alone.
944 */
945 if (!*word)
946 continue;
947
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]948 if (strcasecmp(word, "or") == 0 || strcmp(word, "||") == 0) {
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]949 /* new term suite */
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]950 cond->val |= suite_val;
951 suite_val = ~0U;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]952 cur_suite = NULL;
953 neg = 0;
954 continue;
955 }
956
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]957 if (strcmp(word, "{") == 0) {
958 /* we may have a complete ACL expression between two braces,
959 * find the last one.
960 */
961 int arg_end = arg + 1;
962 const char **args_new;
963
964 while (*args[arg_end] && strcmp(args[arg_end], "}") != 0)
965 arg_end++;
966
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]967 if (!*args[arg_end]) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]968 memprintf(err, "missing closing '}' in condition");
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]969 goto out_free_suite;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]970 }
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]971
972 args_new = calloc(1, (arg_end - arg + 1) * sizeof(*args_new));
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]973 if (!args_new) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]974 memprintf(err, "out of memory when parsing condition");
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]975 goto out_free_suite;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]976 }
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]977
Willy Tarreau2a56c5e2010-03-15 16:13:29 +0100[diff] [blame]978 args_new[0] = "";
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]979 memcpy(args_new + 1, args + arg + 1, (arg_end - arg) * sizeof(*args_new));
980 args_new[arg_end - arg] = "";
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]981 cur_acl = parse_acl(args_new, known_acl, err, al, file, line);
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]982 free(args_new);
983
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]984 if (!cur_acl) {
985 /* note that parse_acl() must have filled <err> here */
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]986 goto out_free_suite;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]987 }
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]988 word = args[arg + 1];
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]989 arg = arg_end;
990 }
991 else {
992 /* search for <word> in the known ACL names. If we do not find
993 * it, let's look for it in the default ACLs, and if found, add
994 * it to the list of ACLs of this proxy. This makes it possible
995 * to override them.
996 */
997 cur_acl = find_acl_by_name(word, known_acl);
998 if (cur_acl == NULL) {
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]999 cur_acl = find_acl_default(word, known_acl, err, al, file, line);
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1000 if (cur_acl == NULL) {
1001 /* note that find_acl_default() must have filled <err> here */
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]1002 goto out_free_suite;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1003 }
Willy Tarreau95fa4692010-02-01 13:05:50 +0100[diff] [blame]1004 }
Willy Tarreau16fbe822007-06-17 11:54:31 +0200[diff] [blame]1005 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1006
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]1007 cur_term = calloc(1, sizeof(*cur_term));
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1008 if (cur_term == NULL) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]1009 memprintf(err, "out of memory when parsing condition");
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1010 goto out_free_suite;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1011 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1012
1013 cur_term->acl = cur_acl;
1014 cur_term->neg = neg;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1015
1016 /* Here it is a bit complex. The acl_term_suite is a conjunction
1017 * of many terms. It may only be used if all of its terms are
1018 * usable at the same time. So the suite's validity domain is an
1019 * AND between all ACL keywords' ones. But, the global condition
1020 * is valid if at least one term suite is OK. So it's an OR between
1021 * all of their validity domains. We could emit a warning as soon
1022 * as suite_val is null because it means that the last ACL is not
1023 * compatible with the previous ones. Let's remain simple for now.
1024 */
1025 cond->use |= cur_acl->use;
1026 suite_val &= cur_acl->val;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1027
1028 if (!cur_suite) {
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]1029 cur_suite = calloc(1, sizeof(*cur_suite));
Willy Tarreauf678b7f2013-01-24 00:25:39 +0100[diff] [blame]1030 if (cur_suite == NULL) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]1031 memprintf(err, "out of memory when parsing condition");
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1032 goto out_free_term;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1033 }
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1034 LIST_INIT(&cur_suite->terms);
1035 LIST_ADDQ(&cond->suites, &cur_suite->list);
1036 }
1037 LIST_ADDQ(&cur_suite->terms, &cur_term->list);
Willy Tarreau74b98a82007-06-16 19:35:18 +0200[diff] [blame]1038 neg = 0;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1039 }
1040
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1041 cond->val |= suite_val;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1042 return cond;
1043
1044 out_free_term:
1045 free(cur_term);
1046 out_free_suite:
1047 prune_acl_cond(cond);
1048 free(cond);
1049 out_return:
1050 return NULL;
1051}
1052
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1053/* Builds an ACL condition starting at the if/unless keyword. The complete
1054 * condition is returned. NULL is returned in case of error or if the first
1055 * word is neither "if" nor "unless". It automatically sets the file name and
Willy Tarreau25320b22013-03-24 07:22:08 +0100[diff] [blame]1056 * the line number in the condition for better error reporting, and sets the
1057 * HTTP intiailization requirements in the proxy. If <err> is not NULL, it will
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1058 * be filled with a pointer to an error message in case of error, that the
1059 * caller is responsible for freeing. The initial location must either be
1060 * freeable or NULL.
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1061 */
Christopher Faulet1b421ea2017-09-22 14:38:56 +0200[diff] [blame]1062struct acl_cond *build_acl_cond(const char *file, int line, struct list *known_acl,
1063 struct proxy *px, const char **args, char **err)
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1064{
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]1065 enum acl_cond_pol pol = ACL_COND_NONE;
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1066 struct acl_cond *cond = NULL;
1067
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1068 if (err)
1069 *err = NULL;
1070
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1071 if (!strcmp(*args, "if")) {
1072 pol = ACL_COND_IF;
1073 args++;
1074 }
1075 else if (!strcmp(*args, "unless")) {
1076 pol = ACL_COND_UNLESS;
1077 args++;
1078 }
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1079 else {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]1080 memprintf(err, "conditions must start with either 'if' or 'unless'");
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1081 return NULL;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1082 }
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1083
Christopher Faulet1b421ea2017-09-22 14:38:56 +0200[diff] [blame]1084 cond = parse_acl_cond(args, known_acl, pol, err, &px->conf.args, file, line);
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1085 if (!cond) {
1086 /* note that parse_acl_cond must have filled <err> here */
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1087 return NULL;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]1088 }
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1089
1090 cond->file = file;
1091 cond->line = line;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1092 px->http_needed |= !!(cond->use & SMP_USE_HTTP_ANY);
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]1093 return cond;
1094}
1095
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1096/* Execute condition <cond> and return either ACL_TEST_FAIL, ACL_TEST_MISS or
1097 * ACL_TEST_PASS depending on the test results. ACL_TEST_MISS may only be
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]1098 * returned if <opt> does not contain SMP_OPT_FINAL, indicating that incomplete
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1099 * data is being examined. The function automatically sets SMP_OPT_ITERATE. This
1100 * function only computes the condition, it does not apply the polarity required
1101 * 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]1102 *
1103 * res = acl_pass(res);
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1104 * if (res == ACL_TEST_MISS)
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1105 * return 0;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1106 * if (cond->pol == ACL_COND_UNLESS)
1107 * res = !res;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1108 */
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]1109enum 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]1110{
1111 __label__ fetch_next;
1112 struct acl_term_suite *suite;
1113 struct acl_term *term;
1114 struct acl_expr *expr;
1115 struct acl *acl;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]1116 struct sample smp;
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]1117 enum acl_test_res acl_res, suite_res, cond_res;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1118
Willy Tarreau7a777ed2012-04-26 11:44:02 +0200[diff] [blame]1119 /* ACLs are iterated over all values, so let's always set the flag to
1120 * indicate this to the fetch functions.
1121 */
1122 opt |= SMP_OPT_ITERATE;
1123
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1124 /* We're doing a logical OR between conditions so we initialize to FAIL.
1125 * The MISS status is propagated down from the suites.
1126 */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1127 cond_res = ACL_TEST_FAIL;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1128 list_for_each_entry(suite, &cond->suites, list) {
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1129 /* Evaluate condition suite <suite>. We stop at the first term
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]1130 * which returns ACL_TEST_FAIL. The MISS status is still propagated
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1131 * in case of uncertainty in the result.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1132 */
1133
1134 /* we're doing a logical AND between terms, so we must set the
1135 * initial value to PASS.
1136 */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1137 suite_res = ACL_TEST_PASS;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1138 list_for_each_entry(term, &suite->terms, list) {
1139 acl = term->acl;
1140
1141 /* FIXME: use cache !
1142 * check acl->cache_idx for this.
1143 */
1144
1145 /* ACL result not cached. Let's scan all the expressions
1146 * and use the first one to match.
1147 */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1148 acl_res = ACL_TEST_FAIL;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1149 list_for_each_entry(expr, &acl->expr, list) {
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]1150 /* we need to reset context and flags */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]1151 memset(&smp, 0, sizeof(smp));
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1152 fetch_next:
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]1153 if (!sample_process(px, sess, strm, opt, expr->smp, &smp)) {
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1154 /* maybe we could not fetch because of missing data */
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]1155 if (smp.flags & SMP_F_MAY_CHANGE && !(opt & SMP_OPT_FINAL))
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1156 acl_res |= ACL_TEST_MISS;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1157 continue;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1158 }
Willy Tarreauc4262962010-05-10 23:42:40 +0200[diff] [blame]1159
Thierry FOURNIER1794fdf2014-01-17 15:25:13 +0100[diff] [blame]1160 acl_res |= pat2acl(pattern_exec_match(&expr->pat, &smp, 0));
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1161 /*
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1162 * OK now acl_res holds the result of this expression
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1163 * as one of ACL_TEST_FAIL, ACL_TEST_MISS or ACL_TEST_PASS.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1164 *
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1165 * Then if (!MISS) we can cache the result, and put
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]1166 * (smp.flags & SMP_F_VOLATILE) in the cache flags.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1167 *
1168 * FIXME: implement cache.
1169 *
1170 */
1171
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1172 /* we're ORing these terms, so a single PASS is enough */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1173 if (acl_res == ACL_TEST_PASS)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1174 break;
1175
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]1176 if (smp.flags & SMP_F_NOT_LAST)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1177 goto fetch_next;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1178
1179 /* sometimes we know the fetched data is subject to change
1180 * later and give another chance for a new match (eg: request
1181 * size, time, ...)
1182 */
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]1183 if (smp.flags & SMP_F_MAY_CHANGE && !(opt & SMP_OPT_FINAL))
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1184 acl_res |= ACL_TEST_MISS;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1185 }
1186 /*
1187 * Here we have the result of an ACL (cached or not).
1188 * ACLs are combined, negated or not, to form conditions.
1189 */
1190
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1191 if (term->neg)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1192 acl_res = acl_neg(acl_res);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1193
1194 suite_res &= acl_res;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1195
Willy Tarreau79c412b2013-10-30 19:30:32 +0100[diff] [blame]1196 /* we're ANDing these terms, so a single FAIL or MISS is enough */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1197 if (suite_res != ACL_TEST_PASS)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1198 break;
1199 }
1200 cond_res |= suite_res;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1201
1202 /* we're ORing these terms, so a single PASS is enough */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]1203 if (cond_res == ACL_TEST_PASS)
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1204 break;
1205 }
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1206 return cond_res;
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1207}
1208
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1209/* Returns a pointer to the first ACL conflicting with usage at place <where>
1210 * which is one of the SMP_VAL_* bits indicating a check place, or NULL if
1211 * no conflict is found. Only full conflicts are detected (ACL is not usable).
1212 * Use the next function to check for useless keywords.
Willy Tarreaudd64f8d2008-07-27 22:02:32 +0200[diff] [blame]1213 */
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1214const struct acl *acl_cond_conflicts(const struct acl_cond *cond, unsigned int where)
Willy Tarreaudd64f8d2008-07-27 22:02:32 +0200[diff] [blame]1215{
1216 struct acl_term_suite *suite;
1217 struct acl_term *term;
1218 struct acl *acl;
1219
1220 list_for_each_entry(suite, &cond->suites, list) {
1221 list_for_each_entry(term, &suite->terms, list) {
1222 acl = term->acl;
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1223 if (!(acl->val & where))
Willy Tarreaudd64f8d2008-07-27 22:02:32 +0200[diff] [blame]1224 return acl;
1225 }
1226 }
1227 return NULL;
1228}
1229
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1230/* Returns a pointer to the first ACL and its first keyword to conflict with
1231 * usage at place <where> which is one of the SMP_VAL_* bits indicating a check
1232 * place. Returns true if a conflict is found, with <acl> and <kw> set (if non
1233 * null), or false if not conflict is found. The first useless keyword is
1234 * returned.
1235 */
Willy Tarreau93fddf12013-03-31 22:59:32 +0200[diff] [blame]1236int 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]1237{
1238 struct acl_term_suite *suite;
1239 struct acl_term *term;
1240 struct acl_expr *expr;
1241
1242 list_for_each_entry(suite, &cond->suites, list) {
1243 list_for_each_entry(term, &suite->terms, list) {
1244 list_for_each_entry(expr, &term->acl->expr, list) {
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]1245 if (!(expr->smp->fetch->val & where)) {
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]1246 if (acl)
1247 *acl = term->acl;
1248 if (kw)
1249 *kw = expr->kw;
1250 return 1;
1251 }
1252 }
1253 }
1254 }
1255 return 0;
1256}
1257
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1258/*
1259 * Find targets for userlist and groups in acl. Function returns the number
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]1260 * of errors or OK if everything is fine. It must be called only once sample
1261 * fetch arguments have been resolved (after smp_resolve_args()).
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1262 */
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]1263int acl_find_targets(struct proxy *p)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1264{
1265
1266 struct acl *acl;
1267 struct acl_expr *expr;
Thierry FOURNIER3ead5b92013-12-13 12:12:18 +0100[diff] [blame]1268 struct pattern_list *pattern;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1269 int cfgerr = 0;
Thierry FOURNIERc5959fd2014-01-20 14:29:33 +0100[diff] [blame]1270 struct pattern_expr_list *pexp;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1271
1272 list_for_each_entry(acl, &p->acl, list) {
1273 list_for_each_entry(expr, &acl->expr, list) {
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]1274 if (!strcmp(expr->kw, "http_auth_group")) {
1275 /* Note: the ARGT_USR argument may only have been resolved earlier
1276 * by smp_resolve_args().
1277 */
Thierry FOURNIER348971e2013-11-21 10:50:10 +0100[diff] [blame]1278 if (expr->smp->arg_p->unresolved) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100[diff] [blame]1279 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]1280 p->id, *acl->name ? "" : "anonymous ", acl->name, expr->kw,
1281 expr->smp->arg_p->data.str.area);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]1282 cfgerr++;
Willy Tarreau496aa012012-06-01 10:38:29 +0200[diff] [blame]1283 continue;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1284 }
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1285
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]1286 if (LIST_ISEMPTY(&expr->pat.head)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100[diff] [blame]1287 ha_alert("proxy %s: acl %s %s(): no groups specified.\n",
1288 p->id, acl->name, expr->kw);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1289 cfgerr++;
1290 continue;
1291 }
1292
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]1293 /* For each pattern, check if the group exists. */
Thierry FOURNIERc5959fd2014-01-20 14:29:33 +0100[diff] [blame]1294 list_for_each_entry(pexp, &expr->pat.head, list) {
1295 if (LIST_ISEMPTY(&pexp->expr->patterns)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100[diff] [blame]1296 ha_alert("proxy %s: acl %s %s(): no groups specified.\n",
1297 p->id, acl->name, expr->kw);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1298 cfgerr++;
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]1299 continue;
1300 }
1301
Thierry FOURNIERc5959fd2014-01-20 14:29:33 +0100[diff] [blame]1302 list_for_each_entry(pattern, &pexp->expr->patterns, list) {
1303 /* this keyword only has one argument */
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]1304 if (!check_group(expr->smp->arg_p->data.usr, pattern->pat.ptr.str)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100[diff] [blame]1305 ha_alert("proxy %s: acl %s %s(): invalid group '%s'.\n",
1306 p->id, acl->name, expr->kw, pattern->pat.ptr.str);
Thierry FOURNIER1e00d382014-02-11 11:31:40 +0100[diff] [blame]1307 cfgerr++;
1308 }
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1309 }
1310 }
1311 }
1312 }
1313 }
1314
1315 return cfgerr;
1316}
Willy Tarreaudd64f8d2008-07-27 22:02:32 +0200[diff] [blame]1317
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]1318/* initializes ACLs by resolving the sample fetch names they rely upon.
1319 * Returns 0 on success, otherwise an error.
1320 */
1321int init_acl()
1322{
1323 int err = 0;
1324 int index;
1325 const char *name;
1326 struct acl_kw_list *kwl;
1327 struct sample_fetch *smp;
1328
1329 list_for_each_entry(kwl, &acl_keywords.list, list) {
1330 for (index = 0; kwl->kw[index].kw != NULL; index++) {
1331 name = kwl->kw[index].fetch_kw;
1332 if (!name)
1333 name = kwl->kw[index].kw;
1334
1335 smp = find_sample_fetch(name, strlen(name));
1336 if (!smp) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100[diff] [blame]1337 ha_alert("Critical internal error: ACL keyword '%s' relies on sample fetch '%s' which was not registered!\n",
1338 kwl->kw[index].kw, name);
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]1339 err++;
1340 continue;
1341 }
1342 kwl->kw[index].smp = smp;
1343 }
1344 }
1345 return err;
1346}
Willy Tarreaud4c33c82013-01-07 21:59:07 +0100[diff] [blame]1347
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1348/************************************************************************/
Willy Tarreaud4c33c82013-01-07 21:59:07 +0100[diff] [blame]1349/* All supported sample and ACL keywords must be declared here. */
1350/************************************************************************/
1351
1352/* Note: must not be declared <const> as its list will be overwritten.
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]1353 * Please take care of keeping this list alphabetically sorted.
1354 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]1355static struct acl_kw_list acl_kws = {ILH, {
Willy Tarreaud4c33c82013-01-07 21:59:07 +0100[diff] [blame]1356 { /* END */ },
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1357}};
1358
Willy Tarreau0108d902018-11-25 19:14:37 +0100[diff] [blame]1359INITCALL1(STG_REGISTER, acl_register_keywords, &acl_kws);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1360
1361/*
1362 * Local variables:
1363 * c-indent-level: 8
1364 * c-basic-offset: 8
1365 * End:
1366 */