mirror of
http://git.haproxy.org/git/haproxy.git/
synced 2024-12-15 07:54:33 +00:00
0cba607400
We now have the following enums and all related functions return them and
consume them :
enum pat_match_res {
PAT_NOMATCH = 0, /* sample didn't match any pattern */
PAT_MATCH = 3, /* sample matched at least one pattern */
};
enum acl_test_res {
ACL_TEST_FAIL = 0, /* test failed */
ACL_TEST_MISS = 1, /* test may pass with more info */
ACL_TEST_PASS = 3, /* test passed */
};
enum acl_cond_pol {
ACL_COND_NONE, /* no polarity set yet */
ACL_COND_IF, /* positive condition (after 'if') */
ACL_COND_UNLESS, /* negative condition (after 'unless') */
};
It's just in order to avoid doubts when reading some code.
154 lines
5.7 KiB
C
154 lines
5.7 KiB
C
/*
|
|
* include/proto/acl.h
|
|
* This file provides interface definitions for ACL manipulation.
|
|
*
|
|
* Copyright (C) 2000-2013 Willy Tarreau - w@1wt.eu
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation, version 2.1
|
|
* exclusively.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef _PROTO_ACL_H
|
|
#define _PROTO_ACL_H
|
|
|
|
#include <common/config.h>
|
|
#include <types/acl.h>
|
|
#include <proto/sample.h>
|
|
|
|
/*
|
|
* FIXME: we need destructor functions too !
|
|
*/
|
|
|
|
/* Negate an acl result. This turns (ACL_MATCH_FAIL, ACL_MATCH_MISS,
|
|
* ACL_MATCH_PASS) into (ACL_MATCH_PASS, ACL_MATCH_MISS, ACL_MATCH_FAIL).
|
|
*/
|
|
static inline enum acl_test_res acl_neg(enum acl_test_res res)
|
|
{
|
|
return (3 >> res);
|
|
}
|
|
|
|
/* Convert an acl result to a boolean. Only ACL_MATCH_PASS returns 1. */
|
|
static inline int acl_pass(enum acl_test_res res)
|
|
{
|
|
return (res >> 1);
|
|
}
|
|
|
|
/* Return a pointer to the ACL <name> within the list starting at <head>, or
|
|
* NULL if not found.
|
|
*/
|
|
struct acl *find_acl_by_name(const char *name, struct list *head);
|
|
|
|
/* Return a pointer to the ACL keyword <kw> within the list starting at <head>,
|
|
* or NULL if not found. Note that if <kw> contains an opening parenthesis,
|
|
* only the left part of it is checked.
|
|
*/
|
|
struct acl_keyword *find_acl_kw(const char *kw);
|
|
|
|
/* Parse an ACL expression starting at <args>[0], and return it.
|
|
* Right now, the only accepted syntax is :
|
|
* <subject> [<value>...]
|
|
*/
|
|
struct acl_expr *parse_acl_expr(const char **args, char **err, struct arg_list *al);
|
|
|
|
/* Purge everything in the acl <acl>, then return <acl>. */
|
|
struct acl *prune_acl(struct acl *acl);
|
|
|
|
/* Parse an ACL with the name starting at <args>[0], and with a list of already
|
|
* known ACLs in <acl>. If the ACL was not in the list, it will be added.
|
|
* A pointer to that ACL is returned.
|
|
*
|
|
* args syntax: <aclname> <acl_expr>
|
|
*/
|
|
struct acl *parse_acl(const char **args, struct list *known_acl, char **err, struct arg_list *al);
|
|
|
|
/* Purge everything in the acl_cond <cond>, then return <cond>. */
|
|
struct acl_cond *prune_acl_cond(struct acl_cond *cond);
|
|
|
|
/* Parse an ACL condition starting at <args>[0], relying on a list of already
|
|
* known ACLs passed in <known_acl>. The new condition is returned (or NULL in
|
|
* case of low memory). Supports multiple conditions separated by "or".
|
|
*/
|
|
struct acl_cond *parse_acl_cond(const char **args, struct list *known_acl,
|
|
enum acl_cond_pol pol, char **err, struct arg_list *al);
|
|
|
|
/* Builds an ACL condition starting at the if/unless keyword. The complete
|
|
* condition is returned. NULL is returned in case of error or if the first
|
|
* word is neither "if" nor "unless". It automatically sets the file name and
|
|
* the line number in the condition for better error reporting, and sets the
|
|
* HTTP initialization requirements in the proxy. If <err> is not NULL, it will
|
|
* be set to an error message upon errors, that the caller will have to free.
|
|
*/
|
|
struct acl_cond *build_acl_cond(const char *file, int line, struct proxy *px, const char **args, char **err);
|
|
|
|
/* Execute condition <cond> and return either ACL_TEST_FAIL, ACL_TEST_MISS or
|
|
* ACL_TEST_PASS depending on the test results. ACL_TEST_MISS may only be
|
|
* returned if <opt> does not contain SMP_OPT_FINAL, indicating that incomplete
|
|
* data is being examined. The function automatically sets SMP_OPT_ITERATE. This
|
|
* function only computes the condition, it does not apply the polarity required
|
|
* by IF/UNLESS, it's up to the caller to do this.
|
|
*/
|
|
enum acl_test_res acl_exec_cond(struct acl_cond *cond, struct proxy *px, struct session *l4, void *l7, unsigned int opt);
|
|
|
|
/* Returns a pointer to the first ACL conflicting with usage at place <where>
|
|
* which is one of the SMP_VAL_* bits indicating a check place, or NULL if
|
|
* no conflict is found. Only full conflicts are detected (ACL is not usable).
|
|
* Use the next function to check for useless keywords.
|
|
*/
|
|
const struct acl *acl_cond_conflicts(const struct acl_cond *cond, unsigned int where);
|
|
|
|
/* Returns a pointer to the first ACL and its first keyword to conflict with
|
|
* usage at place <where> which is one of the SMP_VAL_* bits indicating a check
|
|
* place. Returns true if a conflict is found, with <acl> and <kw> set (if non
|
|
* null), or false if not conflict is found. The first useless keyword is
|
|
* returned.
|
|
*/
|
|
int acl_cond_kw_conflicts(const struct acl_cond *cond, unsigned int where, struct acl const **acl, char const **kw);
|
|
|
|
/*
|
|
* Find targets for userlist and groups in acl. Function returns the number
|
|
* of errors or OK if everything is fine.
|
|
*/
|
|
int acl_find_targets(struct proxy *p);
|
|
|
|
/* Return a pointer to the ACL <name> within the list starting at <head>, or
|
|
* NULL if not found.
|
|
*/
|
|
struct acl *find_acl_by_name(const char *name, struct list *head);
|
|
|
|
/*
|
|
* Registers the ACL keyword list <kwl> as a list of valid keywords for next
|
|
* parsing sessions.
|
|
*/
|
|
void acl_register_keywords(struct acl_kw_list *kwl);
|
|
|
|
/*
|
|
* Unregisters the ACL keyword list <kwl> from the list of valid keywords.
|
|
*/
|
|
void acl_unregister_keywords(struct acl_kw_list *kwl);
|
|
|
|
/* initializes ACLs by resolving the sample fetch names they rely upon.
|
|
* Returns 0 on success, otherwise an error.
|
|
*/
|
|
int init_acl();
|
|
|
|
|
|
#endif /* _PROTO_ACL_H */
|
|
|
|
/*
|
|
* Local variables:
|
|
* c-indent-level: 8
|
|
* c-basic-offset: 8
|
|
* End:
|
|
*/
|