mirror of
http://git.haproxy.org/git/haproxy.git/
synced 2024-12-11 14:05:12 +00:00
224 lines
8.4 KiB
C
224 lines
8.4 KiB
C
/*
|
|
* include/proto/acl.h
|
|
* This file provides interface definitions for ACL manipulation.
|
|
*
|
|
* Copyright (C) 2000-2011 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_PAT_FAIL, ACL_PAT_MISS, ACL_PAT_PASS)
|
|
* into (ACL_PAT_PASS, ACL_PAT_MISS, ACL_PAT_FAIL).
|
|
*/
|
|
static inline int acl_neg(int res)
|
|
{
|
|
return (3 >> res);
|
|
}
|
|
|
|
/* Convert an acl result to a boolean. Only ACL_PAT_PASS returns 1. */
|
|
static inline int acl_pass(int 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);
|
|
|
|
/* 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);
|
|
|
|
/* 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, int pol, char **err);
|
|
|
|
/* 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 adds the
|
|
* ACL requirements to the proxy's acl_requires. 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_PAT_FAIL, ACL_PAT_MISS or
|
|
* ACL_PAT_PASS depending on the test results. 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.
|
|
*/
|
|
int acl_exec_cond(struct acl_cond *cond, struct proxy *px, struct session *l4, void *l7, unsigned int opt);
|
|
|
|
/* Reports a pointer to the first ACL used in condition <cond> which requires
|
|
* at least one of the USE_FLAGS in <require>. Returns NULL if none matches.
|
|
*/
|
|
struct acl *cond_find_require(const struct acl_cond *cond, unsigned int require);
|
|
|
|
/*
|
|
* 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);
|
|
|
|
|
|
/*
|
|
*
|
|
* The following functions are general purpose ACL matching functions.
|
|
*
|
|
*/
|
|
|
|
|
|
/* ignore the current line */
|
|
int acl_parse_nothing(const char **text, struct acl_pattern *pattern, int *opaque, char **err);
|
|
|
|
/* NB: For two strings to be identical, it is required that their lengths match */
|
|
int acl_match_str(struct sample *smp, struct acl_pattern *pattern);
|
|
|
|
/* NB: For two binary buffers to be identical, it is required that their lengths match */
|
|
int acl_match_bin(struct sample *smp, struct acl_pattern *pattern);
|
|
|
|
/* Checks that the length of the pattern in <test> is included between min and max */
|
|
int acl_match_len(struct sample *smp, struct acl_pattern *pattern);
|
|
|
|
/* Checks that the integer in <test> is included between min and max */
|
|
int acl_match_int(struct sample *smp, struct acl_pattern *pattern);
|
|
|
|
/* Parse an integer. It is put both in min and max. */
|
|
int acl_parse_int(const char **text, struct acl_pattern *pattern, int *opaque, char **err);
|
|
|
|
/* Parse an version. It is put both in min and max. */
|
|
int acl_parse_dotted_ver(const char **text, struct acl_pattern *pattern, int *opaque, char **err);
|
|
|
|
/* Parse a range of integers delimited by either ':' or '-'. If only one
|
|
* integer is read, it is set as both min and max.
|
|
*/
|
|
int acl_parse_range(const char **text, struct acl_pattern *pattern, int *opaque, char **err);
|
|
|
|
/* Parse a string. It is allocated and duplicated. */
|
|
int acl_parse_str(const char **text, struct acl_pattern *pattern, int *opaque, char **err);
|
|
|
|
/* Parse a hexa binary definition. It is allocated and duplicated. */
|
|
int acl_parse_bin(const char **text, struct acl_pattern *pattern, int *opaque, char **err);
|
|
|
|
/* Parse and concatenate strings into one. It is allocated and duplicated. */
|
|
int acl_parse_strcat(const char **text, struct acl_pattern *pattern, int *opaque, char **err);
|
|
|
|
/* Parse a regex. It is allocated. */
|
|
int acl_parse_reg(const char **text, struct acl_pattern *pattern, int *opaque, char **err);
|
|
|
|
/* Parse an IP address and an optional mask in the form addr[/mask].
|
|
* The addr may either be an IPv4 address or a hostname. The mask
|
|
* may either be a dotted mask or a number of bits. Returns 1 if OK,
|
|
* otherwise 0.
|
|
*/
|
|
int acl_parse_ip(const char **text, struct acl_pattern *pattern, int *opaque, char **err);
|
|
|
|
/* always fake a data retrieval */
|
|
int acl_fetch_nothing(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
|
|
const struct arg *args, struct sample *smp);
|
|
|
|
/* always return false */
|
|
int acl_match_nothing(struct sample *smp, struct acl_pattern *pattern);
|
|
|
|
/* Checks that the pattern matches the end of the tested string. */
|
|
int acl_match_end(struct sample *smp, struct acl_pattern *pattern);
|
|
|
|
/* Checks that the pattern matches the beginning of the tested string. */
|
|
int acl_match_beg(struct sample *smp, struct acl_pattern *pattern);
|
|
|
|
/* Checks that the pattern is included inside the tested string. */
|
|
int acl_match_sub(struct sample *smp, struct acl_pattern *pattern);
|
|
|
|
/* Checks that the pattern is included inside the tested string, but enclosed
|
|
* between slashes or at the beginning or end of the string. Slashes at the
|
|
* beginning or end of the pattern are ignored.
|
|
*/
|
|
int acl_match_dir(struct sample *smp, struct acl_pattern *pattern);
|
|
|
|
/* Checks that the pattern is included inside the tested string, but enclosed
|
|
* between dots or at the beginning or end of the string. Dots at the beginning
|
|
* or end of the pattern are ignored.
|
|
*/
|
|
int acl_match_dom(struct sample *smp, struct acl_pattern *pattern);
|
|
|
|
/* Check that the IPv4 address in <test> matches the IP/mask in pattern */
|
|
int acl_match_ip(struct sample *smp, struct acl_pattern *pattern);
|
|
|
|
/* Executes a regex. It temporarily changes the data to add a trailing zero,
|
|
* and restores the previous character when leaving.
|
|
*/
|
|
int acl_match_reg(struct sample *smp, struct acl_pattern *pattern);
|
|
|
|
#endif /* _PROTO_ACL_H */
|
|
|
|
/*
|
|
* Local variables:
|
|
* c-indent-level: 8
|
|
* c-basic-offset: 8
|
|
* End:
|
|
*/
|