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git01.mediatek.com / haproxy / 0a3dd74c9cd24ab77178c9ccc65c577a91648cef / . / include / proto / acl.h
blob: d514076e233798d380c70a3c45e9a67bd7e5b0b1 [file] [log] [blame]
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]1/*
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]2 * include/proto/acl.h
3 * This file provides interface definitions for ACL manipulation.
4 *
Willy Tarreau0e698542011-09-16 08:32:32 +0200[diff] [blame]5 * Copyright (C) 2000-2011 Willy Tarreau - w@1wt.eu
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation, version 2.1
10 * exclusively.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]21
22#ifndef _PROTO_ACL_H
23#define _PROTO_ACL_H
24
25#include <common/config.h>
26#include <types/acl.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +0200[diff] [blame]27#include <proto/sample.h>
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]28
29/*
30 * FIXME: we need destructor functions too !
31 */
32
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]33/* Negate an acl result. This turns (ACL_PAT_FAIL, ACL_PAT_MISS, ACL_PAT_PASS)
34 * into (ACL_PAT_PASS, ACL_PAT_MISS, ACL_PAT_FAIL).
35 */
36static inline int acl_neg(int res)
37{
38 return (3 >> res);
39}
40
41/* Convert an acl result to a boolean. Only ACL_PAT_PASS returns 1. */
42static inline int acl_pass(int res)
43{
44 return (res >> 1);
45}
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]46
47/* Return a pointer to the ACL <name> within the list starting at <head>, or
48 * NULL if not found.
49 */
50struct acl *find_acl_by_name(const char *name, struct list *head);
51
52/* Return a pointer to the ACL keyword <kw> within the list starting at <head>,
53 * or NULL if not found. Note that if <kw> contains an opening parenthesis,
54 * only the left part of it is checked.
55 */
56struct acl_keyword *find_acl_kw(const char *kw);
57
58/* Parse an ACL expression starting at <args>[0], and return it.
59 * Right now, the only accepted syntax is :
60 * <subject> [<value>...]
61 */
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]62struct acl_expr *parse_acl_expr(const char **args, char **err);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]63
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200[diff] [blame]64/* Purge everything in the acl <acl>, then return <acl>. */
65struct acl *prune_acl(struct acl *acl);
66
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]67/* Parse an ACL with the name starting at <args>[0], and with a list of already
68 * known ACLs in <acl>. If the ACL was not in the list, it will be added.
69 * A pointer to that ACL is returned.
70 *
71 * args syntax: <aclname> <acl_expr>
72 */
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]73struct acl *parse_acl(const char **args, struct list *known_acl, char **err);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]74
75/* Purge everything in the acl_cond <cond>, then return <cond>. */
76struct acl_cond *prune_acl_cond(struct acl_cond *cond);
77
78/* Parse an ACL condition starting at <args>[0], relying on a list of already
79 * known ACLs passed in <known_acl>. The new condition is returned (or NULL in
80 * case of low memory). Supports multiple conditions separated by "or".
81 */
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]82struct acl_cond *parse_acl_cond(const char **args, struct list *known_acl, int pol, char **err);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]83
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]84/* Builds an ACL condition starting at the if/unless keyword. The complete
85 * condition is returned. NULL is returned in case of error or if the first
86 * word is neither "if" nor "unless". It automatically sets the file name and
87 * the line number in the condition for better error reporting, and adds the
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]88 * ACL requirements to the proxy's acl_requires. If <err> is not NULL, it will
89 * be set to an error message upon errors, that the caller will have to free.
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]90 */
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]91struct acl_cond *build_acl_cond(const char *file, int line, struct proxy *px, const char **args, char **err);
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]92
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]93/* Execute condition <cond> and return either ACL_PAT_FAIL, ACL_PAT_MISS or
94 * ACL_PAT_PASS depending on the test results. This function only computes the
95 * condition, it does not apply the polarity required by IF/UNLESS, it's up to
96 * the caller to do this.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]97 */
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]98int acl_exec_cond(struct acl_cond *cond, struct proxy *px, struct session *l4, void *l7, unsigned int opt);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]99
Willy Tarreaudd64f8d2008-07-27 22:02:32 +0200[diff] [blame]100/* Reports a pointer to the first ACL used in condition <cond> which requires
101 * at least one of the USE_FLAGS in <require>. Returns NULL if none matches.
102 */
Willy Tarreauf1e98b82010-01-28 17:59:39 +0100[diff] [blame]103struct acl *cond_find_require(const struct acl_cond *cond, unsigned int require);
Willy Tarreaudd64f8d2008-07-27 22:02:32 +0200[diff] [blame]104
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]105/*
106 * Find targets for userlist and groups in acl. Function returns the number
107 * of errors or OK if everything is fine.
108 */
109int acl_find_targets(struct proxy *p);
110
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]111/* Return a pointer to the ACL <name> within the list starting at <head>, or
112 * NULL if not found.
113 */
114struct acl *find_acl_by_name(const char *name, struct list *head);
115
116/*
117 * Registers the ACL keyword list <kwl> as a list of valid keywords for next
118 * parsing sessions.
119 */
120void acl_register_keywords(struct acl_kw_list *kwl);
121
122/*
123 * Unregisters the ACL keyword list <kwl> from the list of valid keywords.
124 */
125void acl_unregister_keywords(struct acl_kw_list *kwl);
126
127
128/*
129 *
130 * The following functions are general purpose ACL matching functions.
131 *
132 */
133
134
Willy Tarreau58393e12008-07-20 10:39:22 +0200[diff] [blame]135/* ignore the current line */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]136int acl_parse_nothing(const char **text, struct acl_pattern *pattern, int *opaque, char **err);
Willy Tarreau58393e12008-07-20 10:39:22 +0200[diff] [blame]137
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]138/* NB: For two strings to be identical, it is required that their lengths match */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]139int acl_match_str(struct sample *smp, struct acl_pattern *pattern);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]140
Willy Tarreau0e698542011-09-16 08:32:32 +0200[diff] [blame]141/* Checks that the length of the pattern in <test> is included between min and max */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]142int acl_match_len(struct sample *smp, struct acl_pattern *pattern);
Willy Tarreau0e698542011-09-16 08:32:32 +0200[diff] [blame]143
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]144/* Checks that the integer in <test> is included between min and max */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]145int acl_match_int(struct sample *smp, struct acl_pattern *pattern);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]146
147/* Parse an integer. It is put both in min and max. */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]148int acl_parse_int(const char **text, struct acl_pattern *pattern, int *opaque, char **err);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]149
Willy Tarreau4a26d2f2008-07-15 16:05:33 +0200[diff] [blame]150/* Parse an version. It is put both in min and max. */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]151int acl_parse_dotted_ver(const char **text, struct acl_pattern *pattern, int *opaque, char **err);
Willy Tarreau4a26d2f2008-07-15 16:05:33 +0200[diff] [blame]152
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]153/* Parse a range of integers delimited by either ':' or '-'. If only one
154 * integer is read, it is set as both min and max.
155 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]156int acl_parse_range(const char **text, struct acl_pattern *pattern, int *opaque, char **err);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]157
158/* Parse a string. It is allocated and duplicated. */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]159int acl_parse_str(const char **text, struct acl_pattern *pattern, int *opaque, char **err);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]160
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]161/* Parse and concatenate strings into one. It is allocated and duplicated. */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]162int acl_parse_strcat(const char **text, struct acl_pattern *pattern, int *opaque, char **err);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]163
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]164/* Parse a regex. It is allocated. */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]165int acl_parse_reg(const char **text, struct acl_pattern *pattern, int *opaque, char **err);
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]166
Willy Tarreaua67fad92007-05-08 19:50:09 +0200[diff] [blame]167/* Parse an IP address and an optional mask in the form addr[/mask].
168 * The addr may either be an IPv4 address or a hostname. The mask
169 * may either be a dotted mask or a number of bits. Returns 1 if OK,
170 * otherwise 0.
171 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]172int acl_parse_ip(const char **text, struct acl_pattern *pattern, int *opaque, char **err);
Willy Tarreaua67fad92007-05-08 19:50:09 +0200[diff] [blame]173
Willy Tarreau58393e12008-07-20 10:39:22 +0200[diff] [blame]174/* always fake a data retrieval */
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]175int acl_fetch_nothing(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]176 const struct arg *args, struct sample *smp);
Willy Tarreau58393e12008-07-20 10:39:22 +0200[diff] [blame]177
178/* always return false */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]179int acl_match_nothing(struct sample *smp, struct acl_pattern *pattern);
Willy Tarreau58393e12008-07-20 10:39:22 +0200[diff] [blame]180
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]181/* Checks that the pattern matches the end of the tested string. */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]182int acl_match_end(struct sample *smp, struct acl_pattern *pattern);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]183
184/* Checks that the pattern matches the beginning of the tested string. */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]185int acl_match_beg(struct sample *smp, struct acl_pattern *pattern);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]186
187/* Checks that the pattern is included inside the tested string. */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]188int acl_match_sub(struct sample *smp, struct acl_pattern *pattern);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]189
190/* Checks that the pattern is included inside the tested string, but enclosed
191 * between slashes or at the beginning or end of the string. Slashes at the
192 * beginning or end of the pattern are ignored.
193 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]194int acl_match_dir(struct sample *smp, struct acl_pattern *pattern);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]195
196/* Checks that the pattern is included inside the tested string, but enclosed
197 * between dots or at the beginning or end of the string. Dots at the beginning
198 * or end of the pattern are ignored.
199 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]200int acl_match_dom(struct sample *smp, struct acl_pattern *pattern);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]201
Willy Tarreaua67fad92007-05-08 19:50:09 +0200[diff] [blame]202/* Check that the IPv4 address in <test> matches the IP/mask in pattern */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]203int acl_match_ip(struct sample *smp, struct acl_pattern *pattern);
Willy Tarreaua67fad92007-05-08 19:50:09 +0200[diff] [blame]204
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]205/* Executes a regex. It temporarily changes the data to add a trailing zero,
206 * and restores the previous character when leaving.
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]207 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]208int acl_match_reg(struct sample *smp, struct acl_pattern *pattern);
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]209
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]210#endif /* _PROTO_ACL_H */
211
212/*
213 * Local variables:
214 * c-indent-level: 8
215 * c-basic-offset: 8
216 * End:
217 */