Return to domain_resolver.h CVS log

Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / trafshow

trafshow

    1: /*
    2:  *	Copyright (c) 2003 Rinet Corp., Novosibirsk, Russia
    3:  *
    4:  * Redistribution and use in source forms, with and without modification,
    5:  * are permitted provided that this entire comment appears intact.
    6:  *
    7:  * THIS SOURCE CODE IS PROVIDED ``AS IS'' WITHOUT ANY WARRANTIES OF ANY KIND.
    8:  */
    9: 
   10: #ifndef	_DOMAIN_RESOLVER_H_
   11: #define	_DOMAIN_RESOLVER_H_
   12: 
   13: /*
   14:  * Domain Name Service support.
   15:  */
   16: 
   17: #include <sys/types.h>
   18: #include <netinet/in.h>
   19: 
   20: #define	NAMESERVER_TIMEOUT	10	/* awaiting reply in seconds */
   21: #define	NAMESERVER_RETRIES	3	/* max number of retries */
   22: 
   23: typedef	struct domain_data_ent {
   24: 	u_int ttl;		/* max seconds may be cached */
   25: 	u_int pref;		/* preference if any (for ex. in MX list) */
   26: 	char *name;		/* domain name */
   27: 	in_addr_t addr;		/* ip address */
   28: 
   29: 	struct domain_data_ent *next;
   30: } DOMAIN_DATA;
   31: 
   32: struct session_ent;
   33: 
   34: /*
   35:  * [Re]initialize nameservers (probably using /etc/resolv.conf).
   36:  * Public just for nameservers to be reconfigured by outside signals.
   37:  */
   38: int domain_resolver_init();
   39: 
   40: /*
   41:  * Get IP address at the domain asynchronously.
   42:  * If return -1 (an error) requester of this function will not be notified.
   43:  */
   44: int domain_resolve_addr(const char *domain,
   45: 			struct session_ent *sd,
   46: 			void (*notify)(struct session_ent *sd, DOMAIN_DATA *dd));
   47: /*
   48:  * Get MX list at the domain asynchronously.
   49:  * If return -1 (an error) requester of this function will not be notified.
   50:  */
   51: int domain_resolve_mxlist(const char *domain,
   52: 			  struct session_ent *sd,
   53: 			  void (*notify)(struct session_ent *sd, DOMAIN_DATA *dd));
   54: /*
   55:  * Get domain name at the IP address asynchronously.
   56:  * If return -1 (an error) requester of this function will not be notified.
   57:  */
   58: int domain_resolve_name(in_addr_t ipaddr, /* Network Byte Order */
   59: 			struct session_ent *sd,
   60: 			void (*notify)(struct session_ent *sd, DOMAIN_DATA *dd));
   61: 
   62: /*
   63:  * Domain data container utilities.
   64:  */
   65: DOMAIN_DATA *domain_data_add(DOMAIN_DATA **list, const char *name, int pref);
   66: DOMAIN_DATA *domain_data_find(DOMAIN_DATA **list, const char *name);
   67: void domain_data_free(DOMAIN_DATA **list, const char *name); /* null to all */
   68: 
   69: #endif	/* !_DOMAIN_RESOLVER_H_ */
   70: