regctl.h

简单的基于SIP的会话边界控制器

/*
 * SIP Register Controller
 * Save the register information
 */

#ifndef _REGCTL_H
#define _REGCTL_H

#define REGCTL_DEBUG 0		/* Print debug information */
#define REGNUM_SIZE 100

struct sip_reg_ctl_t {
	int  active;		
	int  expires;				/* register informaiton expire */ 
	struct in_addr nat_ip;			/* ip address after nat translation */
	int nat_port;				/* port after nat translation */
	char reg_host[HOSTNAME_SIZE];		/* client real name */
	char reg_port[PORT_SIZE];		/* client real port */
	char reg_username[USERNAME_SIZE];	/* client real username */	
};


/* Register Information Table */
struct sip_reg_ctl_t sip_reg_ctl[REGNUM_SIZE];

/*  Allocates and initialises new queue structure */
int regctl_newq(struct sip_reg_ctl_t **regctl_queue);
/*  Deallocates queue structure */
int regctl_freeq(struct sip_reg_ctl_t *regctl_queue);
/* Find element based on ip address after nat translation */
int regctl_find(const struct sip_reg_ctl_t regctl_queue[], struct in_addr true_ip, 
			int true_port, int num);
/* New Client Register Information */
int regctl_new(struct sip_reg_ctl_t regctl_queue[], int expires, struct in_addr true_ip,
			int true_port, char *rhost, char *ruser, char *rport, int num);		
/* Release Client Register Informaiton */
int regctl_free(struct sip_reg_ctl_t regctl_queue[], struct in_addr true_ip, 
			int true_port, int num);
/* Update client register informaiton */
int regctl_update(struct sip_reg_ctl_t regctl_queue[], int expires, char *rhost, char *rport,
			char *ruser, int num);
/* Find the nat ip address and port of internal client */
int regctl_findaddr(const struct sip_reg_ctl_t regctl_queue[], char *username, 
			struct in_addr *destip, int *destport, int num);
/* Find user by username */
int regctl_finduser(const struct sip_reg_ctl_t regctl_queue[], char *req_user, int num);

/* Ageing the regctl table */
void register_agemap(void);

#endif	/* !_REGCTL_H */