/*
* include/common/cfgparse.h
* Configuration parsing functions.
*
* Copyright (C) 2000-2012 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 _COMMON_CFGPARSE_H
#define _COMMON_CFGPARSE_H
#include <common/compat.h>
#include <common/config.h>
#include <common/initcall.h>
#include <common/mini-clist.h>
#include <proto/log.h>
#include <proto/proxy.h>
/* configuration sections */
#define CFG_NONE 0
#define CFG_GLOBAL 1
#define CFG_LISTEN 2
#define CFG_USERLIST 3
#define CFG_PEERS 4
/* various keyword modifiers */
enum kw_mod {
KWM_STD = 0, /* normal */
KWM_NO, /* "no" prefixed before the keyword */
KWM_DEF, /* "default" prefixed before the keyword */
};
struct cfg_keyword {
int section; /* section type for this keyword */
const char *kw; /* the keyword itself */
int (*parse)( /* 0=OK, <0=Alert, >0=Warning */
char **args, /* command line and arguments */
int section_type, /* current section CFG_{GLOBAL|LISTEN} */
struct proxy *curpx, /* current proxy (NULL in GLOBAL) */
struct proxy *defpx, /* default proxy (NULL in GLOBAL) */
const char *file, /* config file name */
int line, /* config file line number */
char **err); /* error or warning message output pointer */
};
/* A keyword list. It is a NULL-terminated array of keywords. It embeds a
* struct list in order to be linked to other lists, allowing it to easily
* be declared where it is needed, and linked without duplicating data nor
* allocating memory.
*/
struct cfg_kw_list {
struct list list;
struct cfg_keyword kw[VAR_ARRAY];
};
/* permit to store configuration section */
struct cfg_section {
struct list list;
char *section_name;
int (*section_parser)(const char *, int, char **, int);
int (*post_section_parser)();
};
/* store post configuration parsing */
struct cfg_postparser {
struct list list;
char *name;
int (*func)();
};
extern int cfg_maxpconn;
extern int cfg_maxconn;
extern char *cfg_scope;
extern struct cfg_kw_list cfg_keywords;
extern char *cursection;
extern struct proxy defproxy;
int cfg_parse_global(const char *file, int linenum, char **args, int inv);
int cfg_parse_listen(const char *file, int linenum, char **args, int inv);
int cfg_parse_track_sc_num(unsigned int *track_sc_num,
const char *arg, const char *end, char **err);
int readcfgfile(const char *file);
void cfg_register_keywords(struct cfg_kw_list *kwl);
void cfg_unregister_keywords(struct cfg_kw_list *kwl);
void init_default_instance();
int check_config_validity();
int str2listener(char *str, struct proxy *curproxy, struct bind_conf *bind_conf, const char *file, int line, char **err);
int cfg_register_section(char *section_name,
int (*section_parser)(const char *, int, char **, int),
int (*post_section_parser)());
int cfg_register_postparser(char *name, int (*func)());
void cfg_unregister_sections(void);
void cfg_backup_sections(struct list *backup_sections);
void cfg_restore_sections(struct list *backup_sections);
int warnif_misplaced_tcp_conn(struct proxy *proxy, const char *file, int line, const char *arg);
int warnif_misplaced_tcp_sess(struct proxy *proxy, const char *file, int line, const char *arg);
int warnif_misplaced_tcp_cont(struct proxy *proxy, const char *file, int line, const char *arg);
int warnif_cond_conflicts(const struct acl_cond *cond, unsigned int where, const char *file, int line);
int too_many_args_idx(int maxarg, int index, char **args, char **msg, int *err_code);
int too_many_args(int maxarg, char **args, char **msg, int *err_code);
int alertif_too_many_args_idx(int maxarg, int index, const char *file, int linenum, char **args, int *err_code);
int alertif_too_many_args(int maxarg, const char *file, int linenum, char **args, int *err_code);
int parse_process_number(const char *arg, unsigned long *proc, int max, int *autoinc, char **err);
unsigned long parse_cpu_set(const char **args, unsigned long *cpu_set, char **err);
void free_email_alert(struct proxy *p);
/*
* Sends a warning if proxy <proxy> does not have at least one of the
* capabilities in <cap>. An optional <hint> may be added at the end
* of the warning to help the user. Returns 1 if a warning was emitted
* or 0 if the condition is valid.
*/
static inline int warnifnotcap(struct proxy *proxy, int cap, const char *file, int line, const char *arg, const char *hint)
{
char *msg;
switch (cap) {
case PR_CAP_BE: msg = "no backend"; break;
case PR_CAP_FE: msg = "no frontend"; break;
case PR_CAP_BE|PR_CAP_FE: msg = "neither frontend nor backend"; break;
default: msg = "not enough"; break;
}
if (!(proxy->cap & cap)) {
ha_warning("parsing [%s:%d] : '%s' ignored because %s '%s' has %s capability.%s\n",
file, line, arg, proxy_type_str(proxy), proxy->id, msg, hint ? hint : "");
return 1;
}
return 0;
}
/* simplified way to define a section parser */
#define REGISTER_CONFIG_SECTION(name, parse, post) \
INITCALL3(STG_REGISTER, cfg_register_section, (name), (parse), (post))
#define REGISTER_CONFIG_POSTPARSER(name, parser) \
INITCALL2(STG_REGISTER, cfg_register_postparser, (name), (parser))
#endif /* _COMMON_CFGPARSE_H */
/*
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* End:
*/