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git01.mediatek.com / haproxy / 7bb21532f4d116c38f54bf81112133f57a2d3042 / . / include / proto / acl.h
blob: 1a7c1f4f4ab40acd76bc6a0784b80317359de7e6 [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 Tarreaud4c33c82013-01-07 21:59:07 +0100[diff] [blame]5 * Copyright (C) 2000-2013 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
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]33/* Negate an acl result. This turns (ACL_MATCH_FAIL, ACL_MATCH_MISS,
34 * ACL_MATCH_PASS) into (ACL_MATCH_PASS, ACL_MATCH_MISS, ACL_MATCH_FAIL).
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]35 */
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]36static inline enum acl_test_res acl_neg(enum acl_test_res res)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]37{
38 return (3 >> res);
39}
40
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]41/* Convert an acl result to a boolean. Only ACL_MATCH_PASS returns 1. */
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]42static inline int acl_pass(enum acl_test_res res)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]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 */
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]62struct acl_expr *parse_acl_expr(const char **args, char **err, struct arg_list *al, const char *file, int line);
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 */
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]73struct acl *parse_acl(const char **args, struct list *known_acl, char **err, struct arg_list *al, const char *file, int line);
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 Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]82struct acl_cond *parse_acl_cond(const char **args, struct list *known_acl,
Thierry FOURNIER0d6ba512014-02-11 03:31:34 +0100[diff] [blame]83 enum acl_cond_pol pol, char **err, struct arg_list *al,
84 const char *file, int line);
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]85
Willy Tarreau2bbba412010-01-28 16:48:33 +0100[diff] [blame]86/* Builds an ACL condition starting at the if/unless keyword. The complete
87 * condition is returned. NULL is returned in case of error or if the first
88 * word is neither "if" nor "unless". It automatically sets the file name and
Willy Tarreau25320b22013-03-24 07:22:08 +0100[diff] [blame]89 * the line number in the condition for better error reporting, and sets the
90 * HTTP initialization requirements in the proxy. If <err> is not NULL, it will
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]91 * 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]92 */
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]93struct 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]94
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]95/* Execute condition <cond> and return either ACL_TEST_FAIL, ACL_TEST_MISS or
96 * ACL_TEST_PASS depending on the test results. ACL_TEST_MISS may only be
97 * returned if <opt> does not contain SMP_OPT_FINAL, indicating that incomplete
98 * data is being examined. The function automatically sets SMP_OPT_ITERATE. This
99 * function only computes the condition, it does not apply the polarity required
100 * by IF/UNLESS, it's up to the caller to do this.
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]101 */
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]102enum acl_test_res 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]103
Willy Tarreaua91d0a52013-03-25 08:12:18 +0100[diff] [blame]104/* Returns a pointer to the first ACL conflicting with usage at place <where>
105 * which is one of the SMP_VAL_* bits indicating a check place, or NULL if
106 * no conflict is found. Only full conflicts are detected (ACL is not usable).
107 * Use the next function to check for useless keywords.
108 */
109const struct acl *acl_cond_conflicts(const struct acl_cond *cond, unsigned int where);
110
111/* Returns a pointer to the first ACL and its first keyword to conflict with
112 * usage at place <where> which is one of the SMP_VAL_* bits indicating a check
113 * place. Returns true if a conflict is found, with <acl> and <kw> set (if non
114 * null), or false if not conflict is found. The first useless keyword is
115 * returned.
Willy Tarreaudd64f8d2008-07-27 22:02:32 +0200[diff] [blame]116 */
Willy Tarreau93fddf12013-03-31 22:59:32 +0200[diff] [blame]117int acl_cond_kw_conflicts(const struct acl_cond *cond, unsigned int where, struct acl const **acl, char const **kw);
Willy Tarreaudd64f8d2008-07-27 22:02:32 +0200[diff] [blame]118
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]119/*
120 * Find targets for userlist and groups in acl. Function returns the number
121 * of errors or OK if everything is fine.
122 */
123int acl_find_targets(struct proxy *p);
124
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]125/* Return a pointer to the ACL <name> within the list starting at <head>, or
126 * NULL if not found.
127 */
128struct acl *find_acl_by_name(const char *name, struct list *head);
129
130/*
131 * Registers the ACL keyword list <kwl> as a list of valid keywords for next
132 * parsing sessions.
133 */
134void acl_register_keywords(struct acl_kw_list *kwl);
135
136/*
137 * Unregisters the ACL keyword list <kwl> from the list of valid keywords.
138 */
139void acl_unregister_keywords(struct acl_kw_list *kwl);
140
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]141/* initializes ACLs by resolving the sample fetch names they rely upon.
142 * Returns 0 on success, otherwise an error.
143 */
144int init_acl();
145
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]146
Willy Tarreaua84d3742007-05-07 00:36:48 +0200[diff] [blame]147#endif /* _PROTO_ACL_H */
148
149/*
150 * Local variables:
151 * c-indent-level: 8
152 * c-basic-offset: 8
153 * End:
154 */