Function cacheauth

src/auth.c:645–682

int cacheauth(struct clientparam * param){
	struct authcache *ac, *last=NULL;

	pthread_mutex_lock(&hash_mutex);
	for(ac = authc; ac; ){
		if(ac->expires <= conf.time){
			if(ac->username)myfree(ac->username);
			if(ac->password)myfree(ac->password);
			if(!last){
				authc = ac->next;
				myfree(ac);
				ac = authc;
			}
			else {
				last->next = ac->next;
				myfree(ac);
				ac = last->next;
			}
			continue;
			
		}
		if(((!(conf.authcachetype&2)) || (param->username && ac->username && !strcmp(ac->username, (char *)param->username))) &&
		   ((!(conf.authcachetype&1)) || (*SAFAMILY(&ac->sa) ==  *SAFAMILY(&param->sincr) && !memcmp(SAADDR(&ac->sa), SAADDR(&param->sincr), SAADDRLEN(&ac->sa)))) && 
		   (!(conf.authcachetype&4) || (ac->password && param->password && !strcmp(ac->password, (char *)param->password)))) {
			if(param->username){
				myfree(param->username);
			}
			param->username = (unsigned char *)mystrdup(ac->username);
			pthread_mutex_unlock(&hash_mutex);
			return 0;
		}
		last = ac;
		ac = ac->next;
	}

	pthread_mutex_unlock(&hash_mutex);
	return 4;
}

int doauth(struct clientparam * param){
	int res = 0;