[libfaim.git] / src / txqueue.c

/*
 *  aim_txqueue.c
 *
 * Herein lies all the mangement routines for the transmit (Tx) queue.
 *
 */

#define FAIM_INTERNAL
#include <aim.h>

#ifndef _WIN32
#include <sys/socket.h>
#endif

/*
 * Allocate a new tx frame.
 *
 * This is more for looks than anything else.
 *
 * Right now, that is.  If/when we implement a pool of transmit
 * frames, this will become the request-an-unused-frame part.
 *
 * framing = AIM_FRAMETYPE_OFT/FLAP
 * chan = channel for FLAP, hdrtype for OFT
 *
 */
faim_internal aim_frame_t *aim_tx_new(aim_session_t *sess, aim_conn_t *conn, fu8_t framing, fu8_t chan, int datalen)
{
	aim_frame_t *fr;

	if (!conn) {
		faimdprintf(sess, 0, "aim_tx_new: ERROR: no connection specified\n");
		return NULL;
	}

	/* For sanity... */
	if ((conn->type == AIM_CONN_TYPE_RENDEZVOUS) || 
			(conn->type == AIM_CONN_TYPE_RENDEZVOUS_OUT)) {
		if (framing != AIM_FRAMETYPE_OFT) {
			faimdprintf(sess, 0, "aim_tx_new: attempted to allocate inappropriate frame type for rendezvous connection\n");
			return NULL;
		}
	} else {
		if (framing != AIM_FRAMETYPE_FLAP) {
			faimdprintf(sess, 0, "aim_tx_new: attempted to allocate inappropriate frame type for FLAP connection\n");
			return NULL;
		}
	}

	if (!(fr = (aim_frame_t *)malloc(sizeof(aim_frame_t))))
		return NULL;
	memset(fr, 0, sizeof(aim_frame_t));

	fr->conn = conn; 

	fr->hdrtype = framing;

	if (fr->hdrtype == AIM_FRAMETYPE_FLAP) {

		fr->hdr.flap.type = chan;

	} else if (fr->hdrtype == AIM_FRAMETYPE_OFT) {

		fr->hdr.oft.type = chan;
		fr->hdr.oft.hdr2len = 0; /* this will get setup by caller */

	} else 
		faimdprintf(sess, 0, "tx_new: unknown framing\n");

	if (datalen > 0) {
		fu8_t *data;

		if (!(data = (unsigned char *)malloc(datalen))) {
			aim_frame_destroy(fr);
			return NULL;
		}

		aim_bstream_init(&fr->data, data, datalen);
	}

	return fr;
}

/*
 * aim_tx_enqeue__queuebased()
 *
 * The overall purpose here is to enqueue the passed in command struct
 * into the outgoing (tx) queue.  Basically...
 *   1) Make a scope-irrelevent copy of the struct
 *   3) Mark as not-sent-yet
 *   4) Enqueue the struct into the list
 *   6) Return
 *
 * Note that this is only used when doing queue-based transmitting;
 * that is, when sess->tx_enqueue is set to &aim_tx_enqueue__queuebased.
 *
 */
static int aim_tx_enqueue__queuebased(aim_session_t *sess, aim_frame_t *fr)
{

	if (!fr->conn) {
		faimdprintf(sess, 1, "aim_tx_enqueue: WARNING: enqueueing packet with no connecetion\n");
		fr->conn = aim_getconn_type(sess, AIM_CONN_TYPE_BOS);
	}

	if (fr->hdrtype == AIM_FRAMETYPE_FLAP) {
		/* assign seqnum -- XXX should really not assign until hardxmit */
		fr->hdr.flap.seqnum = aim_get_next_txseqnum(fr->conn);
	}

	fr->handled = 0; /* not sent yet */

	/* see overhead note in aim_rxqueue counterpart */
	if (!sess->queue_outgoing)
		sess->queue_outgoing = fr;
	else {
		aim_frame_t *cur;

		for (cur = sess->queue_outgoing; cur->next; cur = cur->next)
			;
		cur->next = fr;
	}

	return 0;
}

/*
 * aim_tx_enqueue__immediate()
 *
 * Parallel to aim_tx_enqueue__queuebased, however, this bypasses
 * the whole queue mess when you want immediate writes to happen.
 *
 * Basically the same as its __queuebased couterpart, however
 * instead of doing a list append, it just calls aim_tx_sendframe()
 * right here. 
 * 
 */
static int aim_tx_enqueue__immediate(aim_session_t *sess, aim_frame_t *fr)
{

	if (!fr->conn) {
		faimdprintf(sess, 1, "aim_tx_enqueue: ERROR: packet has no connection\n");
		aim_frame_destroy(fr);
		return 0;
	}

	if (fr->hdrtype == AIM_FRAMETYPE_FLAP)
		fr->hdr.flap.seqnum = aim_get_next_txseqnum(fr->conn);

	fr->handled = 0; /* not sent yet */

	aim_tx_sendframe(sess, fr);

	aim_frame_destroy(fr);

	return 0;
}

faim_export int aim_tx_setenqueue(aim_session_t *sess, int what, int (*func)(aim_session_t *, aim_frame_t *))
{
	
	if (what == AIM_TX_QUEUED)
		sess->tx_enqueue = &aim_tx_enqueue__queuebased;
	else if (what == AIM_TX_IMMEDIATE) 
		sess->tx_enqueue = &aim_tx_enqueue__immediate;
	else if (what == AIM_TX_USER) {
		if (!func)
			return -EINVAL;
		sess->tx_enqueue = func;
	} else
		return -EINVAL; /* unknown action */

	return 0;
}

faim_internal int aim_tx_enqueue(aim_session_t *sess, aim_frame_t *fr)
{
	
	/*
	 * If we want to send a connection thats inprogress, we have to force
	 * them to use the queue based version. Otherwise, use whatever they
	 * want.
	 */
	if (fr && fr->conn && 
			(fr->conn->status & AIM_CONN_STATUS_INPROGRESS)) {
		return aim_tx_enqueue__queuebased(sess, fr);
	}

	return (*sess->tx_enqueue)(sess, fr);
}

/* 
 *  aim_get_next_txseqnum()
 *
 *   This increments the tx command count, and returns the seqnum
 *   that should be stamped on the next FLAP packet sent.  This is
 *   normally called during the final step of packet preparation
 *   before enqueuement (in aim_tx_enqueue()).
 *
 */
faim_internal flap_seqnum_t aim_get_next_txseqnum(aim_conn_t *conn)
{
	flap_seqnum_t ret;
	
	faim_mutex_lock(&conn->seqnum_lock);
	ret = ++conn->seqnum;
	faim_mutex_unlock(&conn->seqnum_lock);

	return ret;
}

static int aim_send(int fd, const void *buf, size_t count)
{
	int left, cur;

	for (cur = 0, left = count; left; ) {
		int ret;

		ret = send(fd, ((unsigned char *)buf)+cur, left, 0);
		if (ret == -1)
			return -1;
		else if (ret == 0)
			return cur;

		cur += ret;
		left -= ret;
	}

	return cur;
}

static int aim_bstream_send(aim_bstream_t *bs, aim_conn_t *conn, size_t count)
{
	int wrote = 0;

	if (!bs || !conn || (count < 0))
		return -EINVAL;

	if (count > aim_bstream_empty(bs))
		count = aim_bstream_empty(bs); /* truncate to remaining space */

	if (count)
		wrote = aim_send(conn->fd, bs->data + bs->offset, count);

	if (((aim_session_t *)conn->sessv)->debug >= 2) {
		int i;
		aim_session_t *sess = (aim_session_t *)conn->sessv;

		faimdprintf(sess, 2, "\nOutgoing data: (%d bytes)", wrote);
		for (i = 0; i < wrote; i++) {
			if (!(i % 8)) 
				faimdprintf(sess, 2, "\n\t");
			faimdprintf(sess, 2, "0x%02x ", *(bs->data + bs->offset + i));
		}
		faimdprintf(sess, 2, "\n");
	}


	bs->offset += wrote;

	return wrote;	
}

static int sendframe_flap(aim_session_t *sess, aim_frame_t *fr)
{
	aim_bstream_t obs;
	fu8_t *obs_raw;
	int payloadlen, err = 0, obslen;

	payloadlen = aim_bstream_curpos(&fr->data);

	if (!(obs_raw = malloc(6 + payloadlen)))
		return -ENOMEM;

	aim_bstream_init(&obs, obs_raw, 6 + payloadlen);

	/* FLAP header */
	aimbs_put8(&obs, 0x2a);
	aimbs_put8(&obs, fr->hdr.flap.type);
	aimbs_put16(&obs, fr->hdr.flap.seqnum);
	aimbs_put16(&obs, payloadlen);

	/* payload */
	aim_bstream_rewind(&fr->data);
	aimbs_putbs(&obs, &fr->data, payloadlen);

	obslen = aim_bstream_curpos(&obs);
	aim_bstream_rewind(&obs);

	if (aim_bstream_send(&obs, fr->conn, obslen) != obslen)
		err = -errno;
	
	free(obs_raw); /* XXX aim_bstream_free */

	fr->handled = 1;
	fr->conn->lastactivity = time(NULL);

	return err;
}

static int sendframe_oft(aim_session_t *sess, aim_frame_t *fr)
{
	aim_bstream_t hbs;
	fu8_t *hbs_raw;
	int hbslen;
	int err = 0;

	hbslen = 8 + fr->hdr.oft.hdr2len;

	if (!(hbs_raw = malloc(hbslen)))
		return -1;

	aim_bstream_init(&hbs, hbs_raw, hbslen);

	aimbs_putraw(&hbs, fr->hdr.oft.magic, 4);
	aimbs_put16(&hbs, fr->hdr.oft.hdr2len + 8);
	aimbs_put16(&hbs, fr->hdr.oft.type);
	aimbs_putraw(&hbs, fr->hdr.oft.hdr2, fr->hdr.oft.hdr2len);

	if (aim_bstream_send(&hbs, fr->conn, hbslen) != hbslen) {

		err = -errno;

	} else if (aim_bstream_curpos(&fr->data)) {
		int len;

		len = aim_bstream_curpos(&fr->data);
		aim_bstream_rewind(&fr->data);
		
		if (aim_bstream_send(&fr->data, fr->conn, len) != len)
			err = -errno;
	}

	free(hbs_raw); /* XXX aim_bstream_free */

	fr->handled = 1;
	fr->conn->lastactivity = time(NULL);

	return err;
}

faim_internal int aim_tx_sendframe(aim_session_t *sess, aim_frame_t *fr)
{
	if (fr->hdrtype == AIM_FRAMETYPE_FLAP)
		return sendframe_flap(sess, fr);
	else if (fr->hdrtype == AIM_FRAMETYPE_OFT)
		return sendframe_oft(sess, fr);
	return -1;
}

faim_export int aim_tx_flushqueue(aim_session_t *sess)
{
	aim_frame_t *cur;

	for (cur = sess->queue_outgoing; cur; cur = cur->next) {

		if (cur->handled)
	       		continue; /* already been sent */

		if (cur->conn && (cur->conn->status & AIM_CONN_STATUS_INPROGRESS))
			continue;

		/*
		 * And now for the meager attempt to force transmit
		 * latency and avoid missed messages.
		 */
		if ((cur->conn->lastactivity + cur->conn->forcedlatency) >= time(NULL)) {
			/* 
			 * XXX should be a break! we dont want to block the 
			 * upper layers
			 *
			 * XXX or better, just do this right.
			 *
			 */
			sleep((cur->conn->lastactivity + cur->conn->forcedlatency) - time(NULL));
		}

		/* XXX this should call the custom "queuing" function!! */
		aim_tx_sendframe(sess, cur);
	}

	/* purge sent commands from queue */
	aim_tx_purgequeue(sess);

	return 0;
}

/*
 *  aim_tx_purgequeue()
 *  
 *  This is responsable for removing sent commands from the transmit 
 *  queue. This is not a required operation, but it of course helps
 *  reduce memory footprint at run time!  
 *
 */
faim_export void aim_tx_purgequeue(aim_session_t *sess)
{
	aim_frame_t *cur, **prev;

	for (prev = &sess->queue_outgoing; (cur = *prev); ) {

		if (cur->handled) {
			*prev = cur->next;

			aim_frame_destroy(cur);

		} else
			prev = &cur->next;
	}

	return;
}

/**
 * aim_tx_cleanqueue - get rid of packets waiting for tx on a dying conn
 * @sess: session
 * @conn: connection that's dying
 *
 * for now this simply marks all packets as sent and lets them
 * disappear without warning.
 *
 */
faim_export void aim_tx_cleanqueue(aim_session_t *sess, aim_conn_t *conn)
{
	aim_frame_t *cur;

	for (cur = sess->queue_outgoing; cur; cur = cur->next) {
		if (cur->conn == conn)
			cur->handled = 1;
	}

	return;
}
Commit	Line	Data
9de3ca7e	1	/*
24286d93	2	* aim_txqueue.c
	3	*
	4	* Herein lies all the mangement routines for the transmit (Tx) queue.
	5	*
9de3ca7e	6	*/
9de3ca7e	7
37ee990e	8	#define FAIM_INTERNAL
dd60ff8b	9	#include <aim.h>
9de3ca7e	10
5ac21963	11	#ifndef _WIN32
	12	#include <sys/socket.h>
	13	#endif
	14
f1a5efe0	15	/*
	16	* Allocate a new tx frame.
	17	*
	18	* This is more for looks than anything else.
5b79dc93	19	*
	20	* Right now, that is. If/when we implement a pool of transmit
	21	* frames, this will become the request-an-unused-frame part.
b69540e3	22	*
d410cf58	23	* framing = AIM_FRAMETYPE_OFT/FLAP
d410cf58	24	* chan = channel for FLAP, hdrtype for OFT
b69540e3	25	*
f1a5efe0	26	*/
d410cf58	27	faim_internal aim_frame_t aim_tx_new(aim_session_t sess, aim_conn_t *conn, fu8_t framing, fu8_t chan, int datalen)
f1a5efe0	28	{
d410cf58	29	aim_frame_t *fr;
	30
	31	if (!conn) {
	32	faimdprintf(sess, 0, "aim_tx_new: ERROR: no connection specified\n");
	33	return NULL;
	34	}
	35
	36	/* For sanity... */
	37	if ((conn->type == AIM_CONN_TYPE_RENDEZVOUS) \|\|
	38	(conn->type == AIM_CONN_TYPE_RENDEZVOUS_OUT)) {
	39	if (framing != AIM_FRAMETYPE_OFT) {
	40	faimdprintf(sess, 0, "aim_tx_new: attempted to allocate inappropriate frame type for rendezvous connection\n");
	41	return NULL;
	42	}
	43	} else {
	44	if (framing != AIM_FRAMETYPE_FLAP) {
	45	faimdprintf(sess, 0, "aim_tx_new: attempted to allocate inappropriate frame type for FLAP connection\n");
	46	return NULL;
	47	}
	48	}
	49
	50	if (!(fr = (aim_frame_t *)malloc(sizeof(aim_frame_t))))
	51	return NULL;
	52	memset(fr, 0, sizeof(aim_frame_t));
	53
	54	fr->conn = conn;
	55
	56	fr->hdrtype = framing;
	57
	58	if (fr->hdrtype == AIM_FRAMETYPE_FLAP) {
	59
	60	fr->hdr.flap.type = chan;
	61
	62	} else if (fr->hdrtype == AIM_FRAMETYPE_OFT) {
	63
	64	fr->hdr.oft.type = chan;
	65	fr->hdr.oft.hdr2len = 0; /* this will get setup by caller */
	66
	67	} else
	68	faimdprintf(sess, 0, "tx_new: unknown framing\n");
	69
	70	if (datalen > 0) {
	71	fu8_t *data;
	72
	73	if (!(data = (unsigned char *)malloc(datalen))) {
	74	aim_frame_destroy(fr);
	75	return NULL;
	76	}
	77
	78	aim_bstream_init(&fr->data, data, datalen);
	79	}
	80
	81	return fr;
f1a5efe0	82	}
f1a5efe0	83
9de3ca7e	84	/*
e88ba395	85	* aim_tx_enqeue__queuebased()
24286d93	86	*
	87	* The overall purpose here is to enqueue the passed in command struct
	88	* into the outgoing (tx) queue. Basically...
	89	* 1) Make a scope-irrelevent copy of the struct
24286d93	90	* 3) Mark as not-sent-yet
24286d93	91	* 4) Enqueue the struct into the list
24286d93	92	* 6) Return
24286d93	93	*
e88ba395	94	* Note that this is only used when doing queue-based transmitting;
	95	* that is, when sess->tx_enqueue is set to &aim_tx_enqueue__queuebased.
	96	*
9de3ca7e	97	*/
d410cf58	98	static int aim_tx_enqueue__queuebased(aim_session_t sess, aim_frame_t fr)
9de3ca7e	99	{
d410cf58	100
	101	if (!fr->conn) {
	102	faimdprintf(sess, 1, "aim_tx_enqueue: WARNING: enqueueing packet with no connecetion\n");
	103	fr->conn = aim_getconn_type(sess, AIM_CONN_TYPE_BOS);
	104	}
	105
	106	if (fr->hdrtype == AIM_FRAMETYPE_FLAP) {
	107	/* assign seqnum -- XXX should really not assign until hardxmit */
	108	fr->hdr.flap.seqnum = aim_get_next_txseqnum(fr->conn);
	109	}
	110
	111	fr->handled = 0; /* not sent yet */
	112
	113	/* see overhead note in aim_rxqueue counterpart */
	114	if (!sess->queue_outgoing)
	115	sess->queue_outgoing = fr;
	116	else {
	117	aim_frame_t *cur;
	118
	119	for (cur = sess->queue_outgoing; cur->next; cur = cur->next)
	120	;
	121	cur->next = fr;
	122	}
	123
	124	return 0;
9de3ca7e	125	}
9de3ca7e	126
e88ba395	127	/*
	128	* aim_tx_enqueue__immediate()
	129	*
	130	* Parallel to aim_tx_enqueue__queuebased, however, this bypasses
	131	* the whole queue mess when you want immediate writes to happen.
	132	*
	133	* Basically the same as its __queuebased couterpart, however
	134	* instead of doing a list append, it just calls aim_tx_sendframe()
	135	* right here.
	136	*
	137	*/
d410cf58	138	static int aim_tx_enqueue__immediate(aim_session_t sess, aim_frame_t fr)
e88ba395	139	{
e88ba395	140
d410cf58	141	if (!fr->conn) {
	142	faimdprintf(sess, 1, "aim_tx_enqueue: ERROR: packet has no connection\n");
	143	aim_frame_destroy(fr);
	144	return 0;
	145	}
e88ba395	146
d410cf58	147	if (fr->hdrtype == AIM_FRAMETYPE_FLAP)
d410cf58	148	fr->hdr.flap.seqnum = aim_get_next_txseqnum(fr->conn);
e88ba395	149
d410cf58	150	fr->handled = 0; /* not sent yet */
e88ba395	151
d410cf58	152	aim_tx_sendframe(sess, fr);
e88ba395	153
d410cf58	154	aim_frame_destroy(fr);
	155
	156	return 0;
e88ba395	157	}
e88ba395	158
d410cf58	159	faim_export int aim_tx_setenqueue(aim_session_t sess, int what, int (func)(aim_session_t , aim_frame_t ))
b8c79ca7	160	{
d410cf58	161
	162	if (what == AIM_TX_QUEUED)
	163	sess->tx_enqueue = &aim_tx_enqueue__queuebased;
	164	else if (what == AIM_TX_IMMEDIATE)
	165	sess->tx_enqueue = &aim_tx_enqueue__immediate;
	166	else if (what == AIM_TX_USER) {
	167	if (!func)
	168	return -EINVAL;
	169	sess->tx_enqueue = func;
	170	} else
	171	return -EINVAL; /* unknown action */
	172
	173	return 0;
b8c79ca7	174	}
b8c79ca7	175
d410cf58	176	faim_internal int aim_tx_enqueue(aim_session_t sess, aim_frame_t fr)
22517493	177	{
d410cf58	178
	179	/*
	180	* If we want to send a connection thats inprogress, we have to force
	181	* them to use the queue based version. Otherwise, use whatever they
	182	* want.
	183	*/
	184	if (fr && fr->conn &&
	185	(fr->conn->status & AIM_CONN_STATUS_INPROGRESS)) {
	186	return aim_tx_enqueue__queuebased(sess, fr);
	187	}
	188
	189	return (*sess->tx_enqueue)(sess, fr);
22517493	190	}
22517493	191
9de3ca7e	192	/*
a25832e6	193	* aim_get_next_txseqnum()
	194	*
	195	* This increments the tx command count, and returns the seqnum
	196	* that should be stamped on the next FLAP packet sent. This is
	197	* normally called during the final step of packet preparation
	198	* before enqueuement (in aim_tx_enqueue()).
	199	*
9de3ca7e	200	*/
d410cf58	201	faim_internal flap_seqnum_t aim_get_next_txseqnum(aim_conn_t *conn)
9de3ca7e	202	{
d410cf58	203	flap_seqnum_t ret;
	204
	205	faim_mutex_lock(&conn->seqnum_lock);
	206	ret = ++conn->seqnum;
	207	faim_mutex_unlock(&conn->seqnum_lock);
	208
	209	return ret;
9de3ca7e	210	}
9de3ca7e	211
d410cf58	212	static int aim_send(int fd, const void *buf, size_t count)
e88ba395	213	{
d410cf58	214	int left, cur;
	215
	216	for (cur = 0, left = count; left; ) {
	217	int ret;
	218
	219	ret = send(fd, ((unsigned char *)buf)+cur, left, 0);
	220	if (ret == -1)
	221	return -1;
	222	else if (ret == 0)
	223	return cur;
	224
	225	cur += ret;
	226	left -= ret;
	227	}
	228
	229	return cur;
e88ba395	230	}
e88ba395	231
d410cf58	232	static int aim_bstream_send(aim_bstream_t bs, aim_conn_t conn, size_t count)
9de3ca7e	233	{
d410cf58	234	int wrote = 0;
	235
	236	if (!bs \|\| !conn \|\| (count < 0))
	237	return -EINVAL;
	238
	239	if (count > aim_bstream_empty(bs))
	240	count = aim_bstream_empty(bs); /* truncate to remaining space */
	241
	242	if (count)
	243	wrote = aim_send(conn->fd, bs->data + bs->offset, count);
	244
	245	if (((aim_session_t *)conn->sessv)->debug >= 2) {
	246	int i;
	247	aim_session_t sess = (aim_session_t )conn->sessv;
	248
	249	faimdprintf(sess, 2, "\nOutgoing data: (%d bytes)", wrote);
	250	for (i = 0; i < wrote; i++) {
	251	if (!(i % 8))
	252	faimdprintf(sess, 2, "\n\t");
	253	faimdprintf(sess, 2, "0x%02x ", *(bs->data + bs->offset + i));
	254	}
	255	faimdprintf(sess, 2, "\n");
	256	}
	257
	258
	259	bs->offset += wrote;
	260
	261	return wrote;
	262	}
	263
	264	static int sendframe_flap(aim_session_t sess, aim_frame_t fr)
	265	{
	266	aim_bstream_t obs;
	267	fu8_t *obs_raw;
	268	int payloadlen, err = 0, obslen;
	269
	270	payloadlen = aim_bstream_curpos(&fr->data);
	271
	272	if (!(obs_raw = malloc(6 + payloadlen)))
	273	return -ENOMEM;
	274
	275	aim_bstream_init(&obs, obs_raw, 6 + payloadlen);
	276
	277	/* FLAP header */
	278	aimbs_put8(&obs, 0x2a);
	279	aimbs_put8(&obs, fr->hdr.flap.type);
	280	aimbs_put16(&obs, fr->hdr.flap.seqnum);
	281	aimbs_put16(&obs, payloadlen);
	282
	283	/* payload */
	284	aim_bstream_rewind(&fr->data);
	285	aimbs_putbs(&obs, &fr->data, payloadlen);
	286
	287	obslen = aim_bstream_curpos(&obs);
	288	aim_bstream_rewind(&obs);
	289
	290	if (aim_bstream_send(&obs, fr->conn, obslen) != obslen)
	291	err = -errno;
	292
	293	free(obs_raw); /* XXX aim_bstream_free */
	294
	295	fr->handled = 1;
	296	fr->conn->lastactivity = time(NULL);
	297
298	return err;
299	}
300
301	static int sendframe_oft(aim_session_t sess, aim_frame_t fr)
302	{
303	aim_bstream_t hbs;
304	fu8_t *hbs_raw;
305	int hbslen;
306	int err = 0;
307
308	hbslen = 8 + fr->hdr.oft.hdr2len;
309
310	if (!(hbs_raw = malloc(hbslen)))
311	return -1;
312
313	aim_bstream_init(&hbs, hbs_raw, hbslen);
314
315	aimbs_putraw(&hbs, fr->hdr.oft.magic, 4);
316	aimbs_put16(&hbs, fr->hdr.oft.hdr2len + 8);
317	aimbs_put16(&hbs, fr->hdr.oft.type);
318	aimbs_putraw(&hbs, fr->hdr.oft.hdr2, fr->hdr.oft.hdr2len);
319
320	if (aim_bstream_send(&hbs, fr->conn, hbslen) != hbslen) {
321
322	err = -errno;
323
324	} else if (aim_bstream_curpos(&fr->data)) {
325	int len;
326
327	len = aim_bstream_curpos(&fr->data);
328	aim_bstream_rewind(&fr->data);
329
330	if (aim_bstream_send(&fr->data, fr->conn, len) != len)
331	err = -errno;
332	}
333
334	free(hbs_raw); /* XXX aim_bstream_free */
335
336	fr->handled = 1;
337	fr->conn->lastactivity = time(NULL);
338
339	return err;
340	}
341
342	faim_internal int aim_tx_sendframe(aim_session_t sess, aim_frame_t fr)
343	{
344	if (fr->hdrtype == AIM_FRAMETYPE_FLAP)
345	return sendframe_flap(sess, fr);
346	else if (fr->hdrtype == AIM_FRAMETYPE_OFT)
347	return sendframe_oft(sess, fr);
348	return -1;
349	}
350
351	faim_export int aim_tx_flushqueue(aim_session_t *sess)
352	{
353	aim_frame_t *cur;
354
355	for (cur = sess->queue_outgoing; cur; cur = cur->next) {
356
357	if (cur->handled)
358	continue; /* already been sent */
359
360	if (cur->conn && (cur->conn->status & AIM_CONN_STATUS_INPROGRESS))
361	continue;
362
363	/*
364	* And now for the meager attempt to force transmit
365	* latency and avoid missed messages.
366	*/
367	if ((cur->conn->lastactivity + cur->conn->forcedlatency) >= time(NULL)) {
368	/*
369	* XXX should be a break! we dont want to block the
370	* upper layers
371	*
372	* XXX or better, just do this right.
373	*
374	*/
375	sleep((cur->conn->lastactivity + cur->conn->forcedlatency) - time(NULL));
376	}
377
378	/* XXX this should call the custom "queuing" function!! */
379	aim_tx_sendframe(sess, cur);
380	}
381
382	/* purge sent commands from queue */
383	aim_tx_purgequeue(sess);
384
385	return 0;
9de3ca7e	386	}
	387
	388	/*
a25832e6	389	* aim_tx_purgequeue()
	390	*
	391	* This is responsable for removing sent commands from the transmit
	392	* queue. This is not a required operation, but it of course helps
	393	* reduce memory footprint at run time!
	394	*
9de3ca7e	395	*/
d410cf58	396	faim_export void aim_tx_purgequeue(aim_session_t *sess)
9de3ca7e	397	{
d410cf58	398	aim_frame_t cur, *prev;
	399
	400	for (prev = &sess->queue_outgoing; (cur = *prev); ) {
	401
	402	if (cur->handled) {
	403	*prev = cur->next;
	404
	405	aim_frame_destroy(cur);
	406
	407	} else
	408	prev = &cur->next;
	409	}
	410
	411	return;
9de3ca7e	412	}
9e8c4225	413
	414	/**
	415	* aim_tx_cleanqueue - get rid of packets waiting for tx on a dying conn
	416	* @sess: session
	417	* @conn: connection that's dying
	418	*
	419	* for now this simply marks all packets as sent and lets them
	420	* disappear without warning.
	421	*
9e8c4225	422	*/
d410cf58	423	faim_export void aim_tx_cleanqueue(aim_session_t sess, aim_conn_t conn)
9e8c4225	424	{
d410cf58	425	aim_frame_t *cur;
9e8c4225	426
d410cf58	427	for (cur = sess->queue_outgoing; cur; cur = cur->next) {
	428	if (cur->conn == conn)
	429	cur->handled = 1;
	430	}
9e8c4225	431
d410cf58	432	return;
9e8c4225	433	}
d410cf58	434
d410cf58	435