mirror of
http://git.haproxy.org/git/haproxy.git
synced 2026-02-20 08:28:42 +02:00
95e8483b35
Currently, variable names are only used during parsing and are not
stored at runtime. This makes it impossible to iterate through
variables and retrieve their names.
This patch adds infrastructure to store variable names:
- Add 'name' and 'name_len' fields to var_desc structure
- Add 'name' field to var structure
- Add VDF_NAME_ALLOCATED flag to track memory ownership
- Store names in vars_fill_desc(), var_set(), vars_check_arg(),
and parse_store()
- Free names in var_clear() and release_store_rule()
- Add ARGT_VAR handling in release_sample_arg() to free the
allocated name when the flag is set
This prepares the ground for implementing dump_all_vars() in the
next commit.
Tested with:
- ASAN-enabled build on Linux (TARGET=linux-glibc USE_OPENSSL=1
ARCH_FLAGS="-g -fsanitize=address")
- Regression tests: reg-tests/sample_fetches/vars.vtc
- Regression tests: reg-tests/startup/default_rules.vtc
81 lines
2.9 KiB
C
81 lines
2.9 KiB
C
/*
|
|
* include/haproxy/vars-t.h
|
|
* Macros and structures definitions for variables.
|
|
*
|
|
* Copyright (C) 2015 Thierry FOURNIER <tfournier@arpalert.org>
|
|
*
|
|
* 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 _HAPROXY_VARS_T_H
|
|
#define _HAPROXY_VARS_T_H
|
|
|
|
#include <haproxy/sample_data-t.h>
|
|
#include <haproxy/thread-t.h>
|
|
#include <import/cebtree.h>
|
|
|
|
/* flags used when setting/clearing variables */
|
|
#define VF_CREATEONLY 0x00000001 // do nothing if the variable already exists
|
|
#define VF_PERMANENT 0x00000002 // variables known to the config parser
|
|
|
|
#define VF_COND_IFEXISTS 0x00000004 // only set variable if it already exists
|
|
#define VF_COND_IFNOTEXISTS 0x00000008 // only set variable if it did not exist yet
|
|
#define VF_COND_IFEMPTY 0x00000010 // only set variable if sample is empty
|
|
#define VF_COND_IFNOTEMPTY 0x00000020 // only set variable if sample is not empty
|
|
#define VF_COND_IFSET 0x00000040 // only set variable if its type is not SMP_TYPE_ANY
|
|
#define VF_COND_IFNOTSET 0x00000080 // only set variable if its type is ANY
|
|
#define VF_COND_IFGT 0x00000100 // only set variable if its value is greater than the sample's
|
|
#define VF_COND_IFLT 0x00000200 // only set variable if its value is less than the sample's
|
|
|
|
enum vars_scope {
|
|
SCOPE_SESS = 0,
|
|
SCOPE_TXN,
|
|
SCOPE_REQ,
|
|
SCOPE_RES,
|
|
SCOPE_PROC,
|
|
SCOPE_CHECK,
|
|
};
|
|
|
|
#define VAR_NAME_ROOTS 4
|
|
struct vars {
|
|
struct ceb_root *name_root[VAR_NAME_ROOTS];
|
|
enum vars_scope scope;
|
|
unsigned int size;
|
|
__decl_thread(HA_RWLOCK_T rwlock);
|
|
};
|
|
|
|
#define VDF_PARENT_CTX 0x00000001 // Set if the variable is related to the parent stream
|
|
#define VDF_NAME_ALLOCATED 0x00000002 // Set if name was allocated and must be freed
|
|
|
|
/* This struct describes a variable as found in an arg_data */
|
|
struct var_desc {
|
|
uint64_t name_hash;
|
|
enum vars_scope scope;
|
|
uint flags; /*VDF_* */
|
|
const char *name; /* variable name (not owned) */
|
|
size_t name_len; /* variable name length */
|
|
};
|
|
|
|
struct var {
|
|
struct ceb_node name_node; /* indexes <name_hash> below */
|
|
uint64_t name_hash; /* XXH3() of the variable's name, indexed by <name_node> */
|
|
uint flags; // VF_*
|
|
/* 32-bit hole here */
|
|
char *name; /* variable name (allocated) */
|
|
struct sample_data data; /* data storage. */
|
|
};
|
|
|
|
#endif
|