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/*
* BIRD Internet Routing Daemon -- Configuration File Handling
*
* (c) 1998--2000 Martin Mares <mj@ucw.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#ifndef _BIRD_CONF_H_
#define _BIRD_CONF_H_
#include "lib/resource.h"
#include "lib/timer.h"
#include "lib/hash.h"
/* Configuration structure */
struct config {
pool *pool; /* Pool the configuration is stored in */
linpool *mem; /* Linear pool containing configuration data */
list protos; /* Configured protocol instances (struct proto_config) */
list tables; /* Configured routing tables (struct rtable_config) */
list roa_tables; /* Configured ROA tables (struct roa_table_config) */
list logfiles; /* Configured log files (sysdep) */
int mrtdump_file; /* Configured MRTDump file (sysdep, fd in unix) */
char *syslog_name; /* Name used for syslog (NULL -> no syslog) */
struct rtable_config *master_rtc; /* Configuration of master routing table */
struct iface_patt *router_id_from; /* Configured list of router ID iface patterns */
u32 router_id; /* Our Router ID */
ip_addr listen_bgp_addr; /* Listening BGP socket should use this address */
unsigned listen_bgp_port; /* Listening BGP socket should use this port (0 is default) */
u32 listen_bgp_flags; /* Listening BGP socket should use these flags */
unsigned proto_default_debug; /* Default protocol debug mask */
unsigned proto_default_mrtdump; /* Default protocol mrtdump mask */
struct timeformat tf_route; /* Time format for 'show route' */
struct timeformat tf_proto; /* Time format for 'show protocol' */
struct timeformat tf_log; /* Time format for the logfile */
struct timeformat tf_base; /* Time format for other purposes */
u32 gr_wait; /* Graceful restart wait timeout */
int cli_debug; /* Tracing of CLI connections and commands */
int latency_debug; /* I/O loop tracks duration of each event */
u32 latency_limit; /* Events with longer duration are logged (us) */
u32 watchdog_warning; /* I/O loop watchdog limit for warning (us) */
u32 watchdog_timeout; /* Watchdog timeout (in seconds, 0 = disabled) */
char *err_msg; /* Parser error message */
int err_lino; /* Line containing error */
int err_chno; /* Character where the parser stopped */
char *err_file_name; /* File name containing error */
char *file_name; /* Name of main configuration file */
int file_fd; /* File descriptor of main configuration file */
HASH(struct symbol) sym_hash; /* Lexer: symbol hash table */
struct config *fallback; /* Link to regular config for CLI parsing */
int obstacle_count; /* Number of items blocking freeing of this config */
int shutdown; /* This is a pseudo-config for daemon shutdown */
bird_clock_t load_time; /* When we've got this configuration */
};
/* Please don't use these variables in protocols. Use proto_config->global instead. */
extern struct config *config; /* Currently active configuration */
extern struct config *new_config; /* Configuration being parsed */
struct config *config_alloc(const byte *name);
int config_parse(struct config *);
int cli_parse(struct config *);
void config_free(struct config *);
int config_commit(struct config *, int type, int timeout);
int config_confirm(void);
int config_undo(void);
void config_init(void);
void cf_error(char *msg, ...) NORET;
void config_add_obstacle(struct config *);
void config_del_obstacle(struct config *);
void order_shutdown(void);
#define RECONFIG_NONE 0
#define RECONFIG_HARD 1
#define RECONFIG_SOFT 2
#define RECONFIG_UNDO 3
#define CONF_DONE 0
#define CONF_PROGRESS 1
#define CONF_QUEUED 2
#define CONF_UNQUEUED 3
#define CONF_CONFIRM 4
#define CONF_SHUTDOWN -1
#define CONF_NOTHING -2
/* Pools */
extern linpool *cfg_mem;
#define cfg_alloc(size) lp_alloc(cfg_mem, size)
#define cfg_allocu(size) lp_allocu(cfg_mem, size)
#define cfg_allocz(size) lp_allocz(cfg_mem, size)
char *cfg_strdup(const char *c);
void cfg_copy_list(list *dest, list *src, unsigned node_size);
/* Lexer */
extern int (*cf_read_hook)(byte *buf, uint max, int fd);
struct symbol {
struct symbol *next;
struct sym_scope *scope;
int class;
int aux;
void *aux2;
void *def;
char name[1];
};
struct sym_scope {
struct sym_scope *next; /* Next on scope stack */
struct symbol *name; /* Name of this scope */
int active; /* Currently entered */
};
#define SYM_MAX_LEN 64
/* Remember to update cf_symbol_class_name() */
#define SYM_VOID 0
#define SYM_PROTO 1
#define SYM_TEMPLATE 2
#define SYM_FUNCTION 3
#define SYM_FILTER 4
#define SYM_TABLE 5
#define SYM_ROA 6
#define SYM_VARIABLE 0x100 /* 0x100-0x1ff are variable types */
#define SYM_CONSTANT 0x200 /* 0x200-0x2ff are variable types */
#define SYM_TYPE(s) (((struct f_val *) (s)->def)->type)
#define SYM_VAL(s) (((struct f_val *) (s)->def)->val)
struct include_file_stack {
void *buffer; /* Internal lexer state */
char *file_name; /* File name */
int fd; /* File descriptor */
int lino; /* Current line num */
int chno; /* Current char num (on current line) */
int toklen; /* Current token length */
int depth; /* Include depth, 0 = cannot include */
struct include_file_stack *prev; /* Previous record in stack */
struct include_file_stack *up; /* Parent (who included this file) */
};
extern struct include_file_stack *ifs;
int cf_lex(void);
void cf_lex_init(int is_cli, struct config *c);
void cf_lex_unwind(void);
struct symbol *cf_find_symbol(struct config *cfg, byte *c);
struct symbol *cf_get_symbol(byte *c);
struct symbol *cf_default_name(char *template, int *counter);
struct symbol *cf_define_symbol(struct symbol *symbol, int type, void *def);
void cf_push_scope(struct symbol *);
void cf_pop_scope(void);
char *cf_symbol_class_name(struct symbol *sym);
static inline int cf_symbol_is_constant(struct symbol *sym)
{ return (sym->class & 0xff00) == SYM_CONSTANT; }
/* Parser */
int cf_parse(void);
/* Sysdep hooks */
void sysdep_preconfig(struct config *);
int sysdep_commit(struct config *, struct config *);
void sysdep_shutdown_done(void);
#endif
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