andersk Git - libfaim.git/blame_incremental

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Commit	Line	Data
	1
	2	/*
	3	*
	4	* Various SNAC-related dodads...
	5	*
	6	* outstanding_snacs is a list of aim_snac_t structs. A SNAC should be added
	7	* whenever a new SNAC is sent and it should remain in the list until the
	8	* response for it has been receieved.
	9	*
	10	* First edition badly written by Adam Fritzler (afritz@delphid.ml.org)
	11	* Current edition nicely rewritten (it even works) by n (n@ml.org)
	12	*
	13	*/
	14
	15	#include <faim/aim.h>
	16
	17	u_long aim_newsnac(struct aim_session_t *sess,
	18	struct aim_snac_t *newsnac)
	19	{
	20	struct aim_snac_t snac = NULL, cur = NULL;
	21
	22	if (!newsnac)
	23	return 0;
	24
	25	cur = sess->outstanding_snacs;
	26
	27	snac = calloc(1, sizeof(struct aim_snac_t));
	28	if (!snac)
	29	return 0;
	30	memcpy(snac, newsnac, sizeof(struct aim_snac_t));
	31	snac->issuetime = time(&snac->issuetime);
	32	snac->next = NULL;
	33
	34	if (cur == NULL) {
	35	sess->outstanding_snacs = snac;
	36	return(snac->id);
	37	}
	38	while (cur->next != NULL)
	39	cur = cur->next;
	40	cur->next = snac;
	41
	42	return(snac->id);
	43	}
	44
	45	struct aim_snac_t aim_remsnac(struct aim_session_t sess,
	46	u_long id)
	47	{
	48	struct aim_snac_t *cur;
	49
	50	cur = sess->outstanding_snacs;
	51
	52	if (cur == NULL)
	53	return(NULL);
	54
	55	if (cur->id == id) {
	56	sess->outstanding_snacs = cur->next;
	57	return(cur);
	58	}
	59	while (cur->next != NULL) {
	60	if (cur->next->id == id) {
	61	struct aim_snac_t *tmp = NULL;
	62
	63	tmp = cur->next;
	64	cur->next = cur->next->next;
	65	return(tmp);
	66	}
	67	cur = cur->next;
	68	}
	69	return(NULL);
	70	}
	71
	72	/*
	73	* This is for cleaning up old SNACs that either don't get replies or
	74	* a reply was never received for. Garabage collection. Plain and simple.
	75	*
	76	* maxage is the _minimum_ age in seconds to keep SNACs (though I don't know
	77	* why its called _max_age).
	78	*
	79	*/
	80	int aim_cleansnacs(struct aim_session_t *sess,
	81	int maxage)
	82	{
	83	struct aim_snac_t *cur;
	84	struct aim_snac_t *remed = NULL;
	85	time_t curtime;
	86
	87	cur = sess->outstanding_snacs;
	88
	89	curtime = time(&curtime);
	90
	91	while (cur)
	92	{
	93	if ( (cur) && (((cur->issuetime) + maxage) < curtime))
	94	{
	95	#if DEBUG > 1
	96	printf("aimsnac: WARNING purged obsolete snac %08lx\n", cur->id);
	97	#endif
	98	remed = aim_remsnac(sess, cur->id);
	99	if (remed)
	100	{
	101	if (remed->data)
	102	free(remed->data);
	103	free(remed);
	104	}
	105	}
	106	cur = cur->next;
	107	}
	108
	109	return 0;
	110	}
	111
	112	int aim_putsnac(u_char *buf, int family, int subtype, int flags, u_long snacid)
	113	{
	114	int curbyte = 0;
	115	curbyte += aimutil_put16(buf+curbyte, (u_short)(family&0xffff));
	116	curbyte += aimutil_put16(buf+curbyte, (u_short)(subtype&0xffff));
	117	curbyte += aimutil_put16(buf+curbyte, (u_short)(flags&0xffff));
	118	curbyte += aimutil_put32(buf+curbyte, snacid);
	119	return curbyte;
	120	}