soc.2008.yahoo: 782ffab6: resolved conflict -- merged im.pidgin.pi...

sulabh at soc.pidgin.im sulabh at soc.pidgin.im
Wed Nov 12 05:38:10 EST 2008


-----------------------------------------------------------------
Revision: 782ffab65c8cf17234cc352d99e0aa94600829fe
Ancestor: 76073ee6b6c5e33a843321b0f35d89eeb88f2031
Author: sulabh at soc.pidgin.im
Date: 2008-11-12T10:23:13
Branch: im.pidgin.soc.2008.yahoo
URL: http://d.pidgin.im/viewmtn/revision/info/782ffab65c8cf17234cc352d99e0aa94600829fe

Modified files:
        libpurple/protocols/yahoo/yahoo.c
        libpurple/protocols/yahoo/yahoo.h
        libpurple/protocols/yahoo/yahoo_packet.h

ChangeLog: 

resolved conflict -- merged im.pidgin.pidgin to im.pidgin.soc.2008.yahoo

-------------- next part --------------
============================================================
--- libpurple/protocols/yahoo/yahoo.c	7e5229419ad9251d0903c281223a7b90d319ec21
+++ libpurple/protocols/yahoo/yahoo.c	60ad355e7cafe82f713c110939ff60aa298f8822
@@ -30,6 +30,7 @@
 #include "cmds.h"
 #include "core.h"
 #include "debug.h"
+#include "network.h"
 #include "notify.h"
 #include "privacy.h"
 #include "prpl.h"
@@ -38,6 +39,7 @@
 #include "server.h"
 #include "util.h"
 #include "version.h"
+#include "xmlnode.h"
 
 #include "yahoo.h"
 #include "yahoochat.h"
@@ -235,6 +237,8 @@ static void yahoo_process_status(PurpleC
 				message = pair->value;
 			break;
 		case 11: /* this is the buddy's session id */
+			if (f)
+				f->session_id = strtol(pair->value, NULL, 10);
 			break;
 		case 17: /* in chat? */
 			break;
@@ -521,6 +525,10 @@ static void yahoo_process_list_15(Purple
 					purple_blist_add_buddy(b, NULL, g, NULL);
 				}
 				yahoo_do_group_check(account, ht, norm_bud, yd->current_list15_grp);
+				
+				/* set p2p status not connected and no p2p packet sent */
+				yahoo_friend_set_p2p_status(f, YAHOO_P2PSTATUS_NOT_CONNECTED);
+				f->p2p_packet_sent = 0;
 
 			} else {
 				/* This buddy is on the ignore list (and therefore in no group) */
@@ -635,6 +643,10 @@ static void yahoo_process_list(PurpleCon
 				}
 
 				yahoo_do_group_check(account, ht, norm_bud, grp);
+				/* set p2p status not connected and no p2p packet sent */
+				yahoo_friend_set_p2p_status(f, YAHOO_P2PSTATUS_NOT_CONNECTED);
+				f->p2p_packet_sent = 0;
+
 				g_free(norm_bud);
 			}
 			g_strfreev(buddies);
@@ -691,7 +703,8 @@ static void yahoo_process_list(PurpleCon
 	yahoo_fetch_aliases(gc);
 }
 
-static void yahoo_process_notify(PurpleConnection *gc, struct yahoo_packet *pkt)
+/* pkt_type is YAHOO_PKT_TYPE_SERVER if pkt arrives from yahoo server, YAHOO_PKT_TYPE_P2P if pkt arrives through p2p */
+static void yahoo_process_notify(PurpleConnection *gc, struct yahoo_packet *pkt, yahoo_pkt_type pkt_type)
 {
 	PurpleAccount *account;
 	char *msg = NULL;
@@ -700,12 +713,14 @@ static void yahoo_process_notify(PurpleC
 	char *game = NULL;
 	YahooFriend *f = NULL;
 	GSList *l = pkt->hash;
+	gint val_11 = 0;
+	struct yahoo_data *yd = gc->proto_data;
 
 	account = purple_connection_get_account(gc);
 
 	while (l) {
 		struct yahoo_pair *pair = l->data;
-		if (pair->key == 4)
+		if (pair->key == 4 || pair->key == 1)
 			from = pair->value;
 		if (pair->key == 49)
 			msg = pair->value;
@@ -713,12 +728,22 @@ static void yahoo_process_notify(PurpleC
 			stat = pair->value;
 		if (pair->key == 14)
 			game = pair->value;
+		if (pair->key == 11)
+			val_11 = strtol(pair->value, NULL, 10);
 		l = l->next;
 	}
 
 	if (!from || !msg)
 		return;
 
+	/* disconnect the peer if connected through p2p and sends wrong value for session id */
+	if( (pkt_type == YAHOO_PKT_TYPE_P2P) && (val_11 != yd->session_id) ) {
+		purple_debug_warning("yahoo","p2p: %s sent us notify with wrong session id. Disconnecting p2p connection to peer\n", from);
+		/* remove from p2p connection lists, also calls yahoo_p2p_disconnect_destroy_data */
+		g_hash_table_remove(yd->peers, from);
+		return;
+	}
+
 	if (!g_ascii_strncasecmp(msg, "TYPING", strlen("TYPING"))
 		&& (purple_privacy_check(account, from)))
 	{
@@ -764,21 +789,85 @@ struct _yahoo_im {
 	char *msg;
 };
 
-static void yahoo_process_message(PurpleConnection *gc, struct yahoo_packet *pkt)
+static void yahoo_process_sms_message(PurpleConnection *gc, struct yahoo_packet *pkt)
 {
 	PurpleAccount *account;
+	GSList *l = pkt->hash;
+	struct _yahoo_im *sms = NULL;
+	struct yahoo_data *yd;
+	char *server_msg = NULL;
+	char *m;
+	
+	yd = gc->proto_data;	
+	account = purple_connection_get_account(gc);
+
+	while (l != NULL) {
+		struct yahoo_pair *pair = l->data;
+		if (pair->key == 4)	{
+			sms = g_new0(struct _yahoo_im, 1);
+			sms->from = g_strdup_printf("+%s", pair->value);
+			sms->time = time(NULL);
+			sms->utf8 = TRUE;
+		}
+		if (pair->key == 14) {
+			if (sms)
+				sms->msg = pair->value;
+		}
+		if (pair->key == 68)
+			if(sms)
+				g_hash_table_insert(yd->sms_carrier, g_strdup(sms->from), g_strdup(pair->value));
+		if (pair->key == 16)
+			server_msg = pair->value;
+		l = l->next;
+	}
+
+	if( (pkt->status == -1) || (pkt->status == YAHOO_STATUS_DISCONNECTED) )	{
+		if (server_msg)	{
+			PurpleConversation *c;
+			c = purple_find_conversation_with_account(PURPLE_CONV_TYPE_IM, sms->from, account);
+			if (c == NULL)
+				c = purple_conversation_new(PURPLE_CONV_TYPE_IM, account, sms->from);
+			purple_conversation_write(c, NULL, server_msg, PURPLE_MESSAGE_SYSTEM, time(NULL));
+		}
+		else
+			purple_notify_error(gc, NULL, _("Your SMS was not delivered"), NULL);
+		
+		g_free(sms->from);
+		g_free(sms);
+		return ;
+	}
+
+	if (!sms->from || !sms->msg) {
+		g_free(sms);
+		return;
+	}
+
+	m = yahoo_string_decode(gc, sms->msg, sms->utf8);
+	serv_got_im(gc, sms->from, m, 0, sms->time);
+		
+	g_free(m);
+	g_free(sms->from);
+	g_free(sms);
+}
+
+/* pkt_type is YAHOO_PKT_TYPE_SERVER if pkt arrives from yahoo server, YAHOO_PKT_TYPE_P2P if pkt arrives through p2p */
+static void yahoo_process_message(PurpleConnection *gc, struct yahoo_packet *pkt, yahoo_pkt_type pkt_type)
+{
+	PurpleAccount *account;
 	struct yahoo_data *yd = gc->proto_data;
 	GSList *l = pkt->hash;
 	GSList *list = NULL;
 	struct _yahoo_im *im = NULL;
 	const char *imv = NULL;
+	gint val_11 = 0;
 
 	account = purple_connection_get_account(gc);
 
-	if (pkt->status <= 1 || pkt->status == 5) {
+	if (pkt->status <= 1 || pkt->status == 5 || pkt->status == YAHOO_STATUS_OFFLINE) {
+	/* messages are received with status YAHOO_STATUS_OFFLINE in case of p2p */
 		while (l != NULL) {
 			struct yahoo_pair *pair = l->data;
-			if (pair->key == 4) {
+			if (pair->key == 4 || pair->key == 1) {
 				im = g_new0(struct _yahoo_im, 1);
 				list = g_slist_append(list, im);
 				im->from = pair->value;
@@ -798,6 +887,11 @@ static void yahoo_process_message(Purple
 				if (im)
 					im->msg = pair->value;
 			}
+			/* peer session id */
+			if (pair->key == 11) {
+				if (im)
+					val_11 = strtol(pair->value, NULL, 10);
+			}
 			/* IMV key */
 			if (pair->key == 63)
 			{
@@ -810,6 +904,14 @@ static void yahoo_process_message(Purple
 		                  _("Your Yahoo! message did not get sent."), NULL);
 	}
 
+	/* disconnect the peer if connected through p2p and sends wrong value for session id */
+	if( (pkt_type == YAHOO_PKT_TYPE_P2P) && (val_11 != yd->session_id) ) {
+		purple_debug_warning("yahoo","p2p: %s sent us message with wrong session id. Disconnecting p2p connection to peer\n", im->from);
+		/* remove from p2p connection lists, also calls yahoo_p2p_disconnect_destroy_data */
+		g_hash_table_remove(yd->peers, im->from);
+		return;
+	}
+
 	/** TODO: It seems that this check should be per IM, not global */
 	/* Check for the Doodle IMV */
 	if (im != NULL && imv!= NULL && im->from != NULL)
@@ -2187,6 +2289,8 @@ static void yahoo_process_addbuddy(Purpl
 	char *buf;
 	YahooFriend *f;
 	GSList *l = pkt->hash;
+	struct yahoo_data *yd = gc->proto_data;
+	int protocol = 0;
 
 	while (l) {
 		struct yahoo_pair *pair = l->data;
@@ -2201,6 +2305,9 @@ static void yahoo_process_addbuddy(Purpl
 		case 65:
 			group = pair->value;
 			break;
+		case 241:
+			protocol = strtol(pair->value, NULL, 10);
+			break;
 		}
 
 		l = l->next;
@@ -2214,6 +2321,16 @@ static void yahoo_process_addbuddy(Purpl
 	if (!err || (err == 2)) { /* 0 = ok, 2 = already on serv list */
 		f = yahoo_friend_find_or_new(gc, who);
 		yahoo_update_status(gc, who, f);
+		if(protocol)
+			f->protocol = protocol;
+
+		if( !g_hash_table_lookup(yd->peers, who) )	{
+			/* we are not connected as client, so set friend to not connected */
+			yahoo_friend_set_p2p_status(f, YAHOO_P2PSTATUS_NOT_CONNECTED);
+			f->p2p_packet_sent = 0;
+		}
+		else	/* we are already connected. set friend to YAHOO_P2PSTATUS_WE_ARE_CLIENT */
+			yahoo_friend_set_p2p_status(f, YAHOO_P2PSTATUS_WE_ARE_CLIENT);
 		return;
 	}
 
@@ -2226,6 +2343,426 @@ static void yahoo_process_addbuddy(Purpl
 	g_free(decoded_group);
 }
 
+/* write pkt to the source */
+static void yahoo_p2p_write_pkt(gint source, struct yahoo_packet *pkt)
+{
+	size_t pkt_len;
+	guchar *raw_packet;
+	
+	/*build the raw packet and send it to the host*/
+	pkt_len = yahoo_packet_build(pkt, 0, 0, 0, &raw_packet);
+	if(write(source, raw_packet, pkt_len) != pkt_len)
+		purple_debug_warning("yahoo","p2p: couldn't write to the source\n");
+	g_free(raw_packet);
+}
+
+static void yahoo_p2p_keepalive_cb(gpointer key, gpointer value, gpointer user_data)
+{
+	struct yahoo_p2p_data *p2p_data = value;
+	PurpleConnection *gc = user_data;
+	struct yahoo_packet *pkt_to_send;
+	PurpleAccount *account;
+	struct yahoo_data *yd = gc->proto_data;
+
+	account = purple_connection_get_account(gc);
+
+	pkt_to_send = yahoo_packet_new(YAHOO_SERVICE_P2PFILEXFER, YAHOO_STATUS_AVAILABLE, yd->session_id);
+	yahoo_packet_hash(pkt_to_send, "ssisi",
+		4, purple_normalize(account, purple_account_get_username(account)),
+		5, p2p_data->host_username,
+		241, 0,		/* Protocol identifier */
+		49, "PEERTOPEER",
+		13, 7);
+	yahoo_p2p_write_pkt(p2p_data->source, pkt_to_send);
+
+	yahoo_packet_free(pkt_to_send);
+}
+
+static gboolean yahoo_p2p_keepalive(gpointer data)
+{
+	PurpleConnection *gc = data;
+	struct yahoo_data *yd = gc->proto_data;
+
+	g_hash_table_foreach(yd->peers, yahoo_p2p_keepalive_cb, gc);
+
+	return TRUE;
+}
+
+/* destroy p2p_data associated with a peer and close p2p connection.
+ * g_hash_table_remove() calls this function to destroy p2p_data associated with the peer,
+ * call g_hash_table_remove() instead of this fucntion if peer has an entry in the table */
+static void yahoo_p2p_disconnect_destroy_data(gpointer data)
+{
+	struct yahoo_p2p_data *p2p_data;
+	YahooFriend *f;
+
+	if(!(p2p_data = data))
+		return ;
+
+	/* If friend, set him not connected */
+	f = yahoo_friend_find(p2p_data->gc, p2p_data->host_username);
+	if (f)
+		yahoo_friend_set_p2p_status(f, YAHOO_P2PSTATUS_NOT_CONNECTED);
+
+	if(p2p_data->source >= 0)
+		close(p2p_data->source);
+	purple_input_remove(p2p_data->input_event);
+	g_free(p2p_data->host_ip);
+	g_free(p2p_data->host_username);
+	g_free(p2p_data);
+}
+
+/* exchange of initial p2pfilexfer packets, service type YAHOO_SERVICE_P2PFILEXFER */
+static void yahoo_p2p_process_p2pfilexfer(gpointer data, gint source, struct yahoo_packet *pkt)
+{
+	struct yahoo_p2p_data *p2p_data;
+	char *who = NULL;
+	GSList *l = pkt->hash;
+	struct yahoo_packet *pkt_to_send;
+	PurpleAccount *account;
+	int val_13_to_send = 0;
+	struct yahoo_data *yd;
+	YahooFriend *f;
+
+	if(!(p2p_data = data))
+		return ;
+
+	yd = p2p_data->gc->proto_data;
+
+	/* lets see whats in the packet */
+	while (l) {
+		struct yahoo_pair *pair = l->data;
+
+		switch (pair->key) {
+		case 4:
+			who = pair->value;
+			if(strncmp(who, p2p_data->host_username, strlen(p2p_data->host_username)) != 0) {
+				/* from whom are we receiving the packets ?? */
+				purple_debug_warning("yahoo","p2p: received data from wrong user\n");
+				return;
+			}
+			break;
+		case 13:
+			p2p_data->val_13 = strtol(pair->value, NULL, 10);	/* Value should be 5-7 */
+			break;
+		/* case 5, 49 look laters, no use right now */
+		}
+		l = l->next;
+	}
+
+	account = purple_connection_get_account(p2p_data->gc);
+
+	/* key_13: sort of a counter.
+	 * WHEN WE ARE CLIENT: yahoo server sends val_13 = 0, we send to peer val_13 = 1, receive back val_13 = 5,
+	 * we send val_13=6, receive val_13=7, we send val_13=7, HALT. Keep sending val_13 = 7 as keep alive.
+	 * WHEN WE ARE SERVER: we send val_13 = 0 to yahoo server, peer sends us val_13 = 1, we send val_13 = 5,
+	 * receive val_13 = 6, send val_13 = 7, receive val_13 = 7. HALT. Keep sending val_13 = 7 as keep alive. */
+
+	switch(p2p_data->val_13)	{
+		case 1 : val_13_to_send = 5; break;
+		case 5 : val_13_to_send = 6; break;
+		case 6 : val_13_to_send = 7; break;
+		case 7 : if( g_hash_table_lookup(yd->peers, p2p_data->host_username) )
+				return;
+			 val_13_to_send = 7; break;
+		default: purple_debug_warning("yahoo","p2p:Unknown value for key 13\n");
+			 return;
+		}
+
+	/* Build the yahoo packet */
+	pkt_to_send = yahoo_packet_new(YAHOO_SERVICE_P2PFILEXFER, YAHOO_STATUS_AVAILABLE, yd->session_id);
+	yahoo_packet_hash(pkt_to_send, "ssisi",
+		4, purple_normalize(account, purple_account_get_username(account)),
+		5, p2p_data->host_username,
+		241, 0,		/* Protocol identifier */
+		49, "PEERTOPEER",
+		13, val_13_to_send);
+
+	/* build the raw packet and send it to the host */
+	yahoo_p2p_write_pkt(source, pkt_to_send);
+	yahoo_packet_free(pkt_to_send);
+
+	if( val_13_to_send == 7 )
+		if( !g_hash_table_lookup(yd->peers, p2p_data->host_username) )	{
+			g_hash_table_insert(yd->peers, g_strdup(p2p_data->host_username), p2p_data);
+			/* If the peer is a friend, set him connected */
+			f = yahoo_friend_find(p2p_data->gc, p2p_data->host_username);
+			if (f)	{
+				if(p2p_data->connection_type == YAHOO_P2P_WE_ARE_SERVER)	{
+					p2p_data->session_id = f->session_id;
+					yahoo_friend_set_p2p_status(f, YAHOO_P2PSTATUS_WE_ARE_SERVER);
+				}
+				else
+					yahoo_friend_set_p2p_status(f, YAHOO_P2PSTATUS_WE_ARE_CLIENT);
+			}
+		}
+}
+
+/* callback function associated with receiving of data, not considering receipt of multiple YMSG packets in a single TCP packet */
+static void yahoo_p2p_read_pkt_cb(gpointer data, gint source, PurpleInputCondition cond)
+{
+	guchar buf[1024];	/* is it safe to assume a fixed array length of 1024 ?? */
+	int len;
+	int pos = 0;
+	int pktlen;
+	struct yahoo_packet *pkt;
+	guchar *start = NULL;
+	struct yahoo_p2p_data *p2p_data;
+	struct yahoo_data *yd;
+
+	if(!(p2p_data = data))
+		return ;
+	yd = p2p_data->gc->proto_data;
+
+	len = read(source, buf, sizeof(buf));
+	if ((len < 0) && ((errno == EAGAIN) || (errno == EWOULDBLOCK)))
+		return ; /* No Worries*/
+	else if (len <= 0)
+	{
+		purple_debug_warning("yahoo","p2p: Error in connection, or host disconnected\n");
+		/* remove from p2p connection lists, also calls yahoo_p2p_disconnect_destroy_data */
+		if( g_hash_table_lookup(yd->peers, p2p_data->host_username) )
+			g_hash_table_remove(yd->peers,p2p_data->host_username);
+		else
+			yahoo_p2p_disconnect_destroy_data(data);
+		return;
+	}
+	
+	if(len < YAHOO_PACKET_HDRLEN)
+		return;
+
+	if(strncmp((char *)buf, "YMSG", MIN(4, len)) != 0) {
+		/* Not a YMSG packet */
+		purple_debug_warning("yahoo","p2p: Got something other than YMSG packet\n");
+
+		start = memchr(buf + 1, 'Y', len - 1);
+		if(start) {
+			g_memmove(buf, start, len - (start - buf));
+			len -= start - buf;
+		} else {
+			g_free(buf);
+			return;
+		}
+	}
+
+	pos += 4;	/* YMSG */
+	pos += 2;
+	pos += 2;
+
+	pktlen = yahoo_get16(buf + pos); pos += 2;
+	purple_debug(PURPLE_DEBUG_MISC, "yahoo", "p2p: %d bytes to read\n", len);
+
+	pkt = yahoo_packet_new(0, 0, 0);
+	pkt->service = yahoo_get16(buf + pos); pos += 2;
+	pkt->status = yahoo_get32(buf + pos); pos += 4;
+	pkt->id = yahoo_get32(buf + pos); pos += 4;
+
+	purple_debug(PURPLE_DEBUG_MISC, "yahoo", "p2p: Yahoo Service: 0x%02x Status: %d\n",pkt->service, pkt->status);
+	yahoo_packet_read(pkt, buf + pos, pktlen);
+
+	/* packet processing */
+	switch(pkt->service)	{
+		case YAHOO_SERVICE_P2PFILEXFER:
+			yahoo_p2p_process_p2pfilexfer(data, source, pkt);
+			break;
+		case YAHOO_SERVICE_MESSAGE:
+			yahoo_process_message(p2p_data->gc, pkt, YAHOO_PKT_TYPE_P2P);
+			break;
+		case YAHOO_SERVICE_NOTIFY:
+			yahoo_process_notify(p2p_data->gc, pkt, YAHOO_PKT_TYPE_P2P);
+			break;
+		default:
+			purple_debug_warning("yahoo","p2p: p2p service %d Unhandled\n",pkt->service);
+	}
+
+	yahoo_packet_free(pkt);
+}
+
+static void yahoo_p2p_server_send_connected_cb(gpointer data, gint source, PurpleInputCondition cond)
+{
+	int acceptfd;
+	struct yahoo_p2p_data *p2p_data;
+	struct yahoo_data *yd;
+
+	if(!(p2p_data = data))
+		return ;
+	yd = p2p_data->gc->proto_data;
+
+	acceptfd = accept(source, NULL, 0);
+	if(acceptfd == -1 && (errno == EAGAIN || errno == EWOULDBLOCK))
+		return;
+	else if(acceptfd == -1) {
+		purple_debug_warning("yahoo","yahoo_p2p_server_send_connected_cb: accept: %s\n", g_strerror(errno));
+		yahoo_p2p_disconnect_destroy_data(data);
+		return;
+	}
+
+	/* remove watcher and close p2p server */
+	purple_input_remove(yd->yahoo_p2p_server_watcher);
+	close(yd->yahoo_local_p2p_server_fd);
+	yd->yahoo_local_p2p_server_fd = -1;
+
+	/* Add an Input Read event to the file descriptor */
+	p2p_data->input_event = purple_input_add(acceptfd, PURPLE_INPUT_READ, yahoo_p2p_read_pkt_cb, data);
+	p2p_data->source = acceptfd;
+}
+
+static gboolean yahoo_cancel_p2p_server_listen_cb(gpointer data)
+{
+	struct yahoo_p2p_data *p2p_data;
+	struct yahoo_data *yd;
+
+	if(!(p2p_data = data))
+		return FALSE;
+
+	yd = p2p_data->gc->proto_data;
+
+	purple_debug_warning("yahoo","yahoo p2p server timeout, peer failed to connect");
+	yahoo_p2p_disconnect_destroy_data(data);
+	purple_input_remove(yd->yahoo_p2p_server_watcher);
+	yd->yahoo_p2p_server_watcher = 0;
+	close(yd->yahoo_local_p2p_server_fd);
+	yd->yahoo_local_p2p_server_fd = -1;
+	yd->yahoo_p2p_server_timeout_handle = 0;
+
+	return FALSE;
+}
+
+static void yahoo_p2p_server_listen_cb(int listenfd, gpointer data)
+{
+	struct yahoo_p2p_data *p2p_data;
+	struct yahoo_data *yd;
+
+	if(!(p2p_data = data))
+		return ;
+
+	if(listenfd == -1)	{
+		purple_debug_warning("yahoo","p2p: error starting p2p server\n");
+		yahoo_p2p_disconnect_destroy_data(data);
+		return;
+	}
+
+	yd = p2p_data->gc->proto_data;
+
+	/* Add an Input Read event to the file descriptor */
+	yd->yahoo_local_p2p_server_fd = listenfd;
+	yd->yahoo_p2p_server_watcher = purple_input_add(listenfd, PURPLE_INPUT_READ, yahoo_p2p_server_send_connected_cb,data);
+
+	/* add timeout */
+	yd->yahoo_p2p_server_timeout_handle = purple_timeout_add_seconds(YAHOO_P2P_SERVER_TIMEOUT, yahoo_cancel_p2p_server_listen_cb, data);
+}
+
+/* send p2p pkt containing our encoded ip, asking peer to connect to us */
+void yahoo_send_p2p_pkt(PurpleConnection *gc, const char *who, int val_13)
+{
+	const char *public_ip;
+	guint32 temp[4];	
+	guint32 ip;
+	char temp_str[100];
+	gchar *base64_ip = NULL;
+	YahooFriend *f;
+	struct yahoo_packet *pkt;
+	PurpleAccount *account;
+	struct yahoo_data *yd = gc->proto_data;
+	struct yahoo_p2p_data *p2p_data;
+
+	f = yahoo_friend_find(gc, who);
+	account = purple_connection_get_account(gc);
+
+	/* Do not send invitation if already listening for other connection */
+	if(yd->yahoo_local_p2p_server_fd >= 0)
+		return;
+
+	/* One shouldn't try to connect to self */
+	if( strcmp(purple_normalize(account, purple_account_get_username(account)), who) == 0)
+		return;
+
+	/* send packet to only those friends who arent p2p connected and to whom we havent already sent. Do not send if this condition doesn't hold good */ 
+	if( !( f && (yahoo_friend_get_p2p_status(f) == YAHOO_P2PSTATUS_NOT_CONNECTED) && (f->p2p_packet_sent == 0)) )
+		return;
+
+	/* Dont send p2p packet to buddies of other protocols */
+	if(f->protocol)
+		return;
+
+	/* Finally, don't try to connect to buddies not online or on sms */
+	if( (f->status == YAHOO_STATUS_OFFLINE) || f->sms )
+		return;
+
+	public_ip = purple_network_get_public_ip();
+	if( (sscanf(public_ip, "%u.%u.%u.%u", &temp[0], &temp[1], &temp[2], &temp[3])) !=4 )
+		return ;
+
+	ip = (temp[3] << 24) | (temp[2] <<16) | (temp[1] << 8) | temp[0];
+	sprintf(temp_str, "%d", ip);
+	base64_ip = purple_base64_encode( (guchar *)temp_str, strlen(temp_str) );
+
+	pkt = yahoo_packet_new(YAHOO_SERVICE_PEERTOPEER, YAHOO_STATUS_AVAILABLE, 0);
+	yahoo_packet_hash(pkt, "sssissis",
+		1, purple_normalize(account, purple_account_get_username(account)),
+		4, purple_normalize(account, purple_account_get_username(account)),
+		12, base64_ip,	/* base64 encode ip */
+		61, 0,		/* To-do : figure out what is 61 for?? */
+		2, "",
+		5, who,
+		13, val_13,
+		49, "PEERTOPEER");
+	yahoo_packet_send_and_free(pkt, yd);
+
+	f->p2p_packet_sent = 1;	/* set p2p_packet_sent to sent */
+
+	p2p_data = g_new0(struct yahoo_p2p_data, 1);
+
+	p2p_data->gc = gc;
+	p2p_data->host_ip = NULL;
+	p2p_data->host_username = g_strdup(who);
+	p2p_data->val_13 = val_13;
+	p2p_data->connection_type = YAHOO_P2P_WE_ARE_SERVER;
+
+	purple_network_listen(YAHOO_PAGER_PORT_P2P, SOCK_STREAM, yahoo_p2p_server_listen_cb, p2p_data);
+
+	g_free(base64_ip);
+}
+
+/* function called when connection to p2p host is setup */
+static void yahoo_p2p_init_cb(gpointer data, gint source, const gchar *error_message)
+{
+	struct yahoo_p2p_data *p2p_data;
+	struct yahoo_packet *pkt_to_send;
+	PurpleAccount *account;
+	struct yahoo_data *yd;
+
+	if(!(p2p_data = data))
+		return ;
+	yd = p2p_data->gc->proto_data;
+
+	if(error_message != NULL)	{
+		purple_debug_warning("yahoo","p2p: %s\n",error_message);
+		yahoo_send_p2p_pkt(p2p_data->gc, p2p_data->host_username, 2);/* send p2p init packet with val_13=2 */
+		
+		yahoo_p2p_disconnect_destroy_data(p2p_data);
+		return;
+	}
+
+	/* Add an Input Read event to the file descriptor */
+	p2p_data->input_event = purple_input_add(source, PURPLE_INPUT_READ, yahoo_p2p_read_pkt_cb, data);
+	p2p_data->source = source;
+
+	account = purple_connection_get_account(p2p_data->gc);
+
+	/* Build the yahoo packet */
+	pkt_to_send = yahoo_packet_new(YAHOO_SERVICE_P2PFILEXFER, YAHOO_STATUS_AVAILABLE, yd->session_id);
+	yahoo_packet_hash(pkt_to_send, "ssisi",
+		4, purple_normalize(account, purple_account_get_username(account)),
+		5, p2p_data->host_username,
+		241, 0,		/* Protocol identifier */
+		49, "PEERTOPEER",
+		13, 1);		/* we receive key13= 0 or 2, we send key13=1 */
+
+	yahoo_p2p_write_pkt(source, pkt_to_send);	/* build raw packet and send */
+	yahoo_packet_free(pkt_to_send);
+}
+
 static void yahoo_process_p2p(PurpleConnection *gc, struct yahoo_packet *pkt)
 {
 	GSList *l = pkt->hash;
@@ -2233,7 +2770,15 @@ static void yahoo_process_p2p(PurpleConn
 	char *base64 = NULL;
 	guchar *decoded;
 	gsize len;
+	gint val_13 = 0;
+	gint val_11 = 0;
+	PurpleAccount *account;
+	YahooFriend *f;
 
+	/* if status is YAHOO_STATUS_BUSY, don't do anything, peer wont connect */
+	if(pkt->status == YAHOO_STATUS_BUSY)
+		return ;
+
 	while (l) {
 		struct yahoo_pair *pair = l->data;
 
@@ -2252,14 +2797,21 @@ static void yahoo_process_p2p(PurpleConn
 			/* so, this is an ip address. in base64. decoded it's in ascii.
 			   after strtol, it's in reversed byte order. Who thought this up?*/
 			break;
+		case 13:
+			val_13 = strtol(pair->value, NULL, 10);
+			break;
+		case 11:
+			val_11 = strtol(pair->value, NULL, 10);		/* session id of peer */
+			if( (f = yahoo_friend_find(gc, who)) )
+				f->session_id = val_11;
+			break;
 		/*
 			TODO: figure these out
 			yahoo: Key: 61          Value: 0
 			yahoo: Key: 2   Value:
-			yahoo: Key: 13          Value: 0
+			yahoo: Key: 13          Value: 0	packet count ??
 			yahoo: Key: 49          Value: PEERTOPEER
 			yahoo: Key: 140         Value: 1
-			yahoo: Key: 11          Value: -1786225828
 		*/
 
 		}
@@ -2271,6 +2823,8 @@ static void yahoo_process_p2p(PurpleConn
 		guint32 ip;
 		char *tmp2;
 		YahooFriend *f;
+		char *host_ip;
+		struct yahoo_p2p_data *p2p_data = g_new0(struct yahoo_p2p_data, 1);
 
 		decoded = purple_base64_decode(base64, &len);
 		if (len) {
@@ -2283,12 +2837,34 @@ static void yahoo_process_p2p(PurpleConn
 		ip = strtol(tmp2, NULL, 10);
 		g_free(tmp2);
 		g_free(decoded);
-		tmp2 = g_strdup_printf("%u.%u.%u.%u", ip & 0xff, (ip >> 8) & 0xff, (ip >> 16) & 0xff,
+		host_ip = g_strdup_printf("%u.%u.%u.%u", ip & 0xff, (ip >> 8) & 0xff, (ip >> 16) & 0xff,
 		                       (ip >> 24) & 0xff);
 		f = yahoo_friend_find(gc, who);
 		if (f)
-			yahoo_friend_set_ip(f, tmp2);
-		g_free(tmp2);
+			yahoo_friend_set_ip(f, host_ip);
+		purple_debug_info("yahoo", "IP : %s\n", host_ip);
+
+		account = purple_connection_get_account(gc);
+
+		if(val_11==0)	{
+			if(!f)
+				return;
+			else
+				val_11 = f->session_id;
+		}
+
+		p2p_data->host_username = g_strdup(who);	
+		p2p_data->val_13 = val_13;
+		p2p_data->session_id = val_11;
+		p2p_data->host_ip = host_ip;
+		p2p_data->gc = gc;
+		p2p_data->connection_type = YAHOO_P2P_WE_ARE_CLIENT;
+
+		/* connect to host */
+		if((purple_proxy_connect(NULL, account, host_ip, YAHOO_PAGER_PORT_P2P, yahoo_p2p_init_cb, p2p_data))==NULL)	{
+			yahoo_p2p_disconnect_destroy_data(p2p_data);
+			purple_debug_info("yahoo","p2p: Connection to %s failed\n", host_ip);
+		}
 	}
 }
 
@@ -2368,12 +2944,12 @@ static void yahoo_packet_process(PurpleC
 		yahoo_process_status(gc, pkt);
 		break;
 	case YAHOO_SERVICE_NOTIFY:
-		yahoo_process_notify(gc, pkt);
+		yahoo_process_notify(gc, pkt, YAHOO_PKT_TYPE_SERVER);
 		break;
 	case YAHOO_SERVICE_MESSAGE:
 	case YAHOO_SERVICE_GAMEMSG:
 	case YAHOO_SERVICE_CHATMSG:
-		yahoo_process_message(gc, pkt);
+		yahoo_process_message(gc, pkt, YAHOO_PKT_TYPE_SERVER);
 		break;
 	case YAHOO_SERVICE_SYSMESSAGE:
 		yahoo_process_sysmessage(gc, pkt);
@@ -2450,7 +3026,8 @@ static void yahoo_packet_process(PurpleC
 		break;
 	case YAHOO_SERVICE_P2PFILEXFER:
 		/* This case had no break and continued; thus keeping it this way.*/
-		yahoo_process_p2pfilexfer(gc, pkt);
+		yahoo_process_p2p(gc, pkt);	/* P2PFILEXFER handled the same way as process_p2p */
+		yahoo_process_p2pfilexfer(gc, pkt);	/* redundant ??, need to have a break now */
 	case YAHOO_SERVICE_FILETRANSFER:
 		yahoo_process_filetransfer(gc, pkt);
 		break;
@@ -2484,6 +3061,9 @@ static void yahoo_packet_process(PurpleC
 	case YAHOO_SERVICE_FILETRANS_ACC_15:
 		yahoo_process_filetrans_acc_15(gc, pkt);
 		break;
+	case YAHOO_SERVICE_SMS_MSG:
+		yahoo_process_sms_message(gc, pkt);
+		break;
 
 	default:
 		purple_debug(PURPLE_DEBUG_ERROR, "yahoo",
@@ -3005,6 +3585,9 @@ static void yahoo_login(PurpleAccount *a
 	yd->friends = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, yahoo_friend_free);
 	yd->imvironments = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, g_free);
 	yd->xfer_peer_idstring_map = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, NULL);
+	yd->peers = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, yahoo_p2p_disconnect_destroy_data);
+	yd->sms_carrier = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, g_free);
+	yd->yahoo_p2p_timer = purple_timeout_add_seconds(YAHOO_P2P_KEEPALIVE_SECS, yahoo_p2p_keepalive, gc);
 	yd->confs = NULL;
 	yd->conf_id = 2;
 	yd->last_keepalive = yd->last_ping = time(NULL);
@@ -3070,6 +3653,17 @@ static void yahoo_close(PurpleConnection
 	if (yd->in_chat)
 		yahoo_c_leave(gc, 1); /* 1 = YAHOO_CHAT_ID */
 
+	purple_timeout_remove(yd->yahoo_p2p_timer);
+	if(yd->yahoo_p2p_server_timeout_handle != 0)
+		purple_timeout_remove(yd->yahoo_p2p_server_timeout_handle);
+
+	/* close p2p server if it is waiting for a peer to connect */
+	purple_input_remove(yd->yahoo_p2p_server_watcher);
+	close(yd->yahoo_local_p2p_server_fd);
+	yd->yahoo_local_p2p_server_fd = -1;
+
+	g_hash_table_destroy(yd->sms_carrier);
+	g_hash_table_destroy(yd->peers);
 	g_hash_table_destroy(yd->friends);
 	g_hash_table_destroy(yd->imvironments);
 	g_hash_table_destroy(yd->xfer_peer_idstring_map);
@@ -3609,22 +4203,195 @@ static GList *yahoo_actions(PurplePlugin
 	return m;
 }
 
+struct yahoo_sms_carrier_cb_data	{
+	PurpleConnection *gc;
+	char *who;
+	char *what;
+};
+
+static int yahoo_send_im(PurpleConnection *gc, const char *who, const char *what, PurpleMessageFlags flags);
+
+static void yahoo_get_sms_carrier_cb(PurpleUtilFetchUrlData *url_data, gpointer user_data,
+		const gchar *webdata, size_t len, const gchar *error_message)
+{
+	struct yahoo_sms_carrier_cb_data *sms_cb_data = user_data;
+	PurpleConnection *gc = sms_cb_data->gc;
+	struct yahoo_data *yd = gc->proto_data;
+	char *mobile_no = NULL;
+	char *status = NULL;
+	char *carrier = NULL;
+	PurpleAccount *account = purple_connection_get_account(gc);
+	PurpleConversation *conv = purple_find_conversation_with_account(PURPLE_CONV_TYPE_IM, sms_cb_data->who, account);
+
+	if (error_message != NULL)	{
+		purple_conversation_write(conv, NULL, "Cant send SMS, Unable to obtain mobile carrier", PURPLE_MESSAGE_SYSTEM, time(NULL));
+
+		g_free(sms_cb_data->who);
+		g_free(sms_cb_data->what);
+		g_free(sms_cb_data);
+		return ;
+	}
+	else if (len > 0 && webdata && *webdata) {
+		xmlnode *validate_data_root = xmlnode_from_str(webdata, -1);
+		xmlnode *validate_data_child = xmlnode_get_child(validate_data_root, "mobile_no");
+		mobile_no = (char *)xmlnode_get_attrib(validate_data_child, "msisdn");
+		
+		validate_data_root = xmlnode_copy(validate_data_child);
+		validate_data_child = xmlnode_get_child(validate_data_root, "status");
+		status = xmlnode_get_data(validate_data_child);
+
+		validate_data_child = xmlnode_get_child(validate_data_root, "carrier");
+		carrier = xmlnode_get_data(validate_data_child);
+
+		purple_debug_info("yahoo","SMS validate data: Mobile:%s, Status:%s, Carrier:%s\n", mobile_no, status, carrier);
+
+		if( strcmp(status, "Valid") == 0)	{
+			g_hash_table_insert(yd->sms_carrier, g_strdup_printf("+%s", mobile_no), g_strdup(carrier));
+			yahoo_send_im(sms_cb_data->gc, sms_cb_data->who, sms_cb_data->what, PURPLE_MESSAGE_SEND);
+		}
+		else	{
+			g_hash_table_insert(yd->sms_carrier, g_strdup_printf("+%s", mobile_no), g_strdup("Unknown"));
+			purple_conversation_write(conv, NULL, "Cant send SMS, Unknown mobile carrier", PURPLE_MESSAGE_SYSTEM, time(NULL));
+		}
+
+		xmlnode_free(validate_data_child);
+		xmlnode_free(validate_data_root);
+		g_free(sms_cb_data->who);
+		g_free(sms_cb_data->what);
+		g_free(sms_cb_data);
+		g_free(mobile_no);
+		g_free(status);
+		g_free(carrier);
+	}
+}
+
+static void yahoo_get_sms_carrier(PurpleConnection *gc, gpointer data)
+{
+	struct yahoo_data *yd = gc->proto_data;
+	PurpleUtilFetchUrlData *url_data;
+	struct yahoo_sms_carrier_cb_data *sms_cb_data;
+	char *validate_request_str = NULL;
+	char *request = NULL;
+	gboolean use_whole_url = FALSE;
+	xmlnode *validate_request_root = NULL;
+	xmlnode *validate_request_child = NULL;
+
+	if(!(sms_cb_data = data))
+		return;
+
+	validate_request_root = xmlnode_new("validate");
+	xmlnode_set_attrib(validate_request_root, "intl", "us");
+	xmlnode_set_attrib(validate_request_root, "version", YAHOO_CLIENT_VERSION);
+	xmlnode_set_attrib(validate_request_root, "qos", "0");
+
+	validate_request_child = xmlnode_new_child(validate_request_root, "mobile_no");
+	xmlnode_set_attrib(validate_request_child, "msisdn", sms_cb_data->who + 1);
+
+	validate_request_str = xmlnode_to_str(validate_request_root, NULL);
+
+	xmlnode_free(validate_request_child);
+	xmlnode_free(validate_request_root);
+
+	request = g_strdup_printf(
+		"POST /mobileno?intl=us&version=%s HTTP/1.1\r\n"
+		"Cookie: T=%s; path=/; domain=.yahoo.com; Y=%s; path=/; domain=.yahoo.com;\r\n"
+		"User-Agent: Mozilla/4.0 (compatible; MSIE 5.5)\r\n"
+		"Host: validate.msg.yahoo.com\r\n"
+		"Content-Length: %d\r\n"
+		"Cache-Control: no-cache\r\n\r\n%s",
+		YAHOO_CLIENT_VERSION, yd->cookie_t, yd->cookie_y, strlen(validate_request_str), validate_request_str);
+
+	/* use whole URL if using HTTP Proxy */
+	if ((gc->account->proxy_info) && (gc->account->proxy_info->type == PURPLE_PROXY_HTTP))
+	    use_whole_url = TRUE;
+
+	url_data = purple_util_fetch_url_request(YAHOO_SMS_CARRIER_URL, use_whole_url,
+			"Mozilla/4.0 (compatible; MSIE 5.5)", TRUE, request, FALSE,
+			yahoo_get_sms_carrier_cb, data);
+
+	g_free(request);
+	g_free(validate_request_str);
+
+	if (!url_data)	{
+		PurpleAccount *account = purple_connection_get_account(gc);
+		PurpleConversation *conv = purple_find_conversation_with_account(PURPLE_CONV_TYPE_IM, sms_cb_data->who, account);
+		purple_conversation_write(conv, NULL, "Cant send SMS, Unable to obtain mobile carrier", PURPLE_MESSAGE_SYSTEM, time(NULL));
+		g_free(sms_cb_data->who);
+		g_free(sms_cb_data->what);
+		g_free(sms_cb_data);
+	}
+}
+
 static int yahoo_send_im(PurpleConnection *gc, const char *who, const char *what, PurpleMessageFlags flags)
 {
 	struct yahoo_data *yd = gc->proto_data;
-	struct yahoo_packet *pkt = yahoo_packet_new(YAHOO_SERVICE_MESSAGE, YAHOO_STATUS_OFFLINE, 0);
+	struct yahoo_packet *pkt;
 	char *msg = yahoo_html_to_codes(what);
 	char *msg2;
 	gboolean utf8 = TRUE;
 	PurpleWhiteboard *wb;
 	int ret = 1;
 	YahooFriend *f = NULL;
+	struct yahoo_p2p_data *p2p_data;
 
 	msg2 = yahoo_string_encode(gc, msg, &utf8);
 
+	if( strncmp(who, "+", 1) == 0 )	{
+		/* we have an sms to be sent */
+		gchar *carrier = NULL;
+		const char *alias = NULL;
+		PurpleAccount *account = purple_connection_get_account(gc);
+		PurpleConversation *conv = purple_find_conversation_with_account(PURPLE_CONV_TYPE_IM, who, account);
+
+		carrier = g_hash_table_lookup(yd->sms_carrier, who);
+		if (!carrier)	{
+			struct yahoo_sms_carrier_cb_data *sms_cb_data;
+			sms_cb_data = g_malloc(sizeof(struct yahoo_sms_carrier_cb_data));
+			sms_cb_data->gc = gc;
+			sms_cb_data->who = g_malloc(strlen(who));
+			sms_cb_data->what = g_malloc(strlen(what));
+			strcpy(sms_cb_data->who, who);
+			strcpy(sms_cb_data->what, what);
+
+			purple_conversation_write(conv, NULL, "Getting mobile carrier to send the sms", PURPLE_MESSAGE_SYSTEM, time(NULL));
+			
+			yahoo_get_sms_carrier(gc, sms_cb_data);
+
+			g_free(msg);
+			g_free(msg2);
+			return ret;
+		}
+		else if( strcmp(carrier,"Unknown") == 0 ) {
+			purple_conversation_write(conv, NULL, "Cant send SMS, Unknown mobile carrier", PURPLE_MESSAGE_SYSTEM, time(NULL));
+
+			g_free(msg);
+			g_free(msg2);
+			return -1;
+		}
+
+		alias = purple_account_get_alias(account);
+		pkt = yahoo_packet_new(YAHOO_SERVICE_SMS_MSG, YAHOO_STATUS_AVAILABLE, 0);
+		yahoo_packet_hash(pkt, "sssss",
+			1, purple_connection_get_display_name(gc),
+			69, alias,
+			5, who + 1,
+			68, carrier,
+			14, msg2);
+		yahoo_packet_send_and_free(pkt, yd);
+
+		g_free(msg);
+		g_free(msg2);
+
+		return ret;
+	}
+
+	pkt = yahoo_packet_new(YAHOO_SERVICE_MESSAGE, YAHOO_STATUS_OFFLINE, 0);
 	yahoo_packet_hash(pkt, "ss", 1, purple_connection_get_display_name(gc), 5, who);
 	if ((f = yahoo_friend_find(gc, who)) && f->protocol)
 		yahoo_packet_hash_int(pkt, 241, f->protocol);
+	else
+		if(strchr(who,'@'))
+			yahoo_packet_hash_int(pkt, 241, 2);
 
 	if (utf8)
 		yahoo_packet_hash_str(pkt, 97, "1");
@@ -3663,8 +4430,17 @@ static int yahoo_send_im(PurpleConnectio
 		yahoo_packet_hash_str(pkt, 206, "2");
 
 	/* We may need to not send any packets over 2000 bytes, but I'm not sure yet. */
-	if ((YAHOO_PACKET_HDRLEN + yahoo_packet_length(pkt)) <= 2000)
-		yahoo_packet_send(pkt, yd);
+	if ((YAHOO_PACKET_HDRLEN + yahoo_packet_length(pkt)) <= 2000)	{
+		/* if p2p link exists, send through it. To-do: key 15, time value to be sent in case of p2p */
+		if( (p2p_data = g_hash_table_lookup(yd->peers, who)) )	{
+			yahoo_packet_hash_int(pkt, 11, p2p_data->session_id);
+			yahoo_p2p_write_pkt(p2p_data->source, pkt);
+		}
+		else	{
+			yahoo_packet_send(pkt, yd);
+			yahoo_send_p2p_pkt(gc, who, 0);		/* send p2p packet, with val_13=0 */
+		}
+	}
 	else
 		ret = -E2BIG;
 
@@ -3679,13 +4455,29 @@ static unsigned int yahoo_send_typing(Pu
 static unsigned int yahoo_send_typing(PurpleConnection *gc, const char *who, PurpleTypingState state)
 {
 	struct yahoo_data *yd = gc->proto_data;
+	struct yahoo_p2p_data *p2p_data;
+
 	struct yahoo_packet *pkt = yahoo_packet_new(YAHOO_SERVICE_NOTIFY, YAHOO_STATUS_TYPING, 0);
-	yahoo_packet_hash(pkt, "ssssss", 49, "TYPING", 1, purple_connection_get_display_name(gc),
+
+	/* Don't do anything if sms is being typed */
+	if( strncmp(who, "+", 1) == 0 )
+		return 0;
+
+	/* check to see if p2p link exists, send through it */
+	if( (p2p_data = g_hash_table_lookup(yd->peers, who)) )	{
+		yahoo_packet_hash(pkt, "sssssis", 49, "TYPING", 1, purple_connection_get_display_name(gc),
 	                  14, " ", 13, state == PURPLE_TYPING ? "1" : "0",
+	                  5, who, 11, p2p_data->session_id, 1002, "1");	/* To-do: key 15 to be sent in case of p2p */	
+		yahoo_p2p_write_pkt(p2p_data->source, pkt);
+		yahoo_packet_free(pkt);
+	}
+	else	{	/* send through yahoo server */
+		yahoo_packet_hash(pkt, "ssssss", 49, "TYPING", 1, purple_connection_get_display_name(gc),
+	                  14, " ", 13, state == PURPLE_TYPING ? "1" : "0",
 	                  5, who, 1002, "1");
+		yahoo_packet_send_and_free(pkt, yd);
+	}
 
-	yahoo_packet_send_and_free(pkt, yd);
-
 	return 0;
 }
 
@@ -3935,18 +4727,36 @@ static void yahoo_add_buddy(PurpleConnec
 
 	group2 = yahoo_string_encode(gc, group, NULL);
 	pkt = yahoo_packet_new(YAHOO_SERVICE_ADDBUDDY, YAHOO_STATUS_AVAILABLE, 0);
-	yahoo_packet_hash(pkt, "ssssssssss",
-	                  14, "",
-	                  65, group2,
-	                  97, "1",
-	                  1, purple_connection_get_display_name(gc),
-	                  302, "319",
-	                  300, "319",
-	                  7, buddy->name,
-	                  334, "0",
-	                  301, "319",
-	                  303, "319"
-	);
+	if(strchr(buddy->name, '@'))	{
+		yahoo_packet_hash(pkt, "sssssssssss",
+			14, "",
+			65, group2,
+			97, "1",
+			1, purple_connection_get_display_name(gc),
+			302, "319",
+			300, "319",
+			7, buddy->name,
+			241, "2",
+			334, "0",
+			301, "319",
+			303, "319"
+		);
+	}
+	else	{
+		yahoo_packet_hash(pkt, "ssssssssss",
+			14, "",
+			65, group2,
+			97, "1",
+			1, purple_connection_get_display_name(gc),
+			302, "319",
+			300, "319",
+			7, buddy->name,
+			334, "0",
+			301, "319",
+			303, "319"
+		);
+	}
+
 	if (f && f->protocol)
 		yahoo_packet_hash_int(pkt, 241, f->protocol);
 	yahoo_packet_send_and_free(pkt, yd);
@@ -3961,8 +4771,9 @@ static void yahoo_remove_buddy(PurpleCon
 	PurpleGroup *g;
 	gboolean remove = TRUE;
 	char *cg;
+	YahooFriend *f = yahoo_friend_find(gc, buddy->name);
 
-	if (!(yahoo_friend_find(gc, buddy->name)))
+	if (!f)
 		return;
 
 	buddies = purple_find_buddies(purple_connection_get_account(gc), buddy->name);
@@ -3983,6 +4794,8 @@ static void yahoo_remove_buddy(PurpleCon
 	pkt = yahoo_packet_new(YAHOO_SERVICE_REMBUDDY, YAHOO_STATUS_AVAILABLE, 0);
 	yahoo_packet_hash(pkt, "sss", 1, purple_connection_get_display_name(gc),
 	                  7, buddy->name, 65, cg);
+	if(f->protocol)
+		yahoo_packet_hash_int(pkt, 241, f->protocol);
 	yahoo_packet_send_and_free(pkt, yd);
 	g_free(cg);
 }
@@ -4055,11 +4868,12 @@ static void yahoo_change_buddys_group(Pu
 	struct yahoo_data *yd = gc->proto_data;
 	struct yahoo_packet *pkt;
 	char *gpn, *gpo;
+	YahooFriend *f = yahoo_friend_find(gc, who);
 
 	/* Step 0:  If they aren't on the server list anyway,
 	 *          don't bother letting the server know.
 	 */
-	if (!yahoo_friend_find(gc, who))
+	if (!f)
 		return;
 
 	/* If old and new are the same, we would probably
@@ -4075,7 +4889,12 @@ static void yahoo_change_buddys_group(Pu
 	}
 
 	pkt = yahoo_packet_new(YAHOO_SERVICE_CHGRP_15, YAHOO_STATUS_AVAILABLE, 0);
-	yahoo_packet_hash(pkt, "ssssssss", 1, purple_connection_get_display_name(gc),
+	if(f->protocol)
+		yahoo_packet_hash(pkt, "ssssissss", 1, purple_connection_get_display_name(gc),
+	                  302, "240", 300, "240", 7, who, 241, f->protocol, 224, gpo, 264, gpn, 301,
+	                  "240", 303, "240");
+	else
+		yahoo_packet_hash(pkt, "ssssssss", 1, purple_connection_get_display_name(gc),
 	                  302, "240", 300, "240", 7, who, 224, gpo, 264, gpn, 301,
 	                  "240", 303, "240");
 	yahoo_packet_send_and_free(pkt, yd);
@@ -4289,10 +5108,10 @@ static gboolean yahoo_uri_handler(const 
 				purple_conv_send_confirm(conv, message);
 			}
 		}
-		/*else
+		/* else
 			**If pidgindialogs_im() was in the core, we could use it here.
 			 * It is all purple_request_* based, but I'm not sure it really belongs in the core
-			pidgindialogs_im();*/
+			pidgindialogs_im(); */
 
 		return TRUE;
 	}
@@ -4306,7 +5125,7 @@ static gboolean yahoo_uri_handler(const 
 			g_hash_table_insert(params, g_strdup("type"), g_strdup("Chat"));
 			serv_join_chat(purple_account_get_connection(acct), params);
 		}
-		/*else
+		/* else
 			** Same as above (except that this would have to be re-written using purple_request_*)
 			pidgin_blist_joinchat_show(); */
 
@@ -4376,7 +5195,7 @@ static PurplePluginProtocolInfo prpl_inf
 	yahoo_add_buddy,
 	NULL, /* add_buddies */
 	yahoo_remove_buddy,
-	NULL, /*remove_buddies */
+	NULL, /* remove_buddies */
 	NULL, /* add_permit */
 	yahoo_add_deny,
 	NULL, /* rem_permit */
============================================================
--- libpurple/protocols/yahoo/yahoo.h	50bc84d9e9f5c3f1da265c8ef93ed880a403a218
+++ libpurple/protocols/yahoo/yahoo.h	765244b00e3c05701c9e43181254242dd4d45772
@@ -30,6 +30,9 @@
 
 #define YAHOO_PAGER_HOST "scs.msg.yahoo.com"
 #define YAHOO_PAGER_PORT 5050
+#define YAHOO_PAGER_PORT_P2P 5101
+#define YAHOO_P2P_KEEPALIVE_SECS 300
+#define YAHOO_P2P_SERVER_TIMEOUT 10
 #define YAHOO_PROFILE_URL "http://profiles.yahoo.com/"
 #define YAHOO_MAIL_URL "https://login.yahoo.com/config/login?.src=ym"
 #define YAHOO_XFER_HOST "filetransfer.msg.yahoo.com"
@@ -45,7 +48,7 @@
 #define YAHOOJP_MAIL_URL "http://mail.yahoo.co.jp/"
 #define YAHOOJP_XFER_HOST "filetransfer.msg.yahoo.co.jp"
 #define YAHOOJP_WEBCAM_HOST "wc.yahoo.co.jp"
-/*not sure, must test:*/
+/* not sure, must test: */
 #define YAHOOJP_XFER_RELAY_HOST "relay.msg.yahoo.co.jp" 
 #define YAHOOJP_XFER_RELAY_PORT 80
 #define YAHOOJP_ROOMLIST_URL "http://insider.msg.yahoo.co.jp/ycontent/"
@@ -55,6 +58,8 @@
 
 #define WEBMESSENGER_URL "http://login.yahoo.com/config/login?.src=pg"
 
+#define YAHOO_SMS_CARRIER_URL "http://lookup.msg.vip.mud.yahoo.com"
+
 #define YAHOO_PICURL_SETTING "picture_url"
 #define YAHOO_PICCKSUM_SETTING "picture_checksum"
 #define YAHOO_PICEXPIRE_SETTING "picture_expire"
@@ -80,10 +85,19 @@
 #define YAHOOJP_CLIENT_VERSION_ID "524223"
 #define YAHOOJP_CLIENT_VERSION "7,0,1,1"
 
-
 /* Index into attention types list. */
 #define YAHOO_BUZZ 0
 
+typedef enum {
+	YAHOO_PKT_TYPE_SERVER = 0,
+	YAHOO_PKT_TYPE_P2P
+} yahoo_pkt_type;
+
+typedef enum {
+	YAHOO_P2P_WE_ARE_CLIENT =0,
+	YAHOO_P2P_WE_ARE_SERVER
+} yahoo_p2p_connection_type;
+
 enum yahoo_status {
 	YAHOO_STATUS_AVAILABLE = 0,
 	YAHOO_STATUS_BRB,
@@ -113,6 +127,17 @@ struct yahoo_buddy_icon_upload_data {
 	guint watcher;
 };
 
+struct yahoo_p2p_data	{
+	PurpleConnection *gc;
+	char *host_ip;
+	char *host_username;
+	int val_13;
+	guint input_event;
+	gint source;
+	int session_id;
+	yahoo_p2p_connection_type connection_type;
+};
+
 struct _YchtConn;
 
 struct yahoo_data {
@@ -168,8 +193,8 @@ struct yahoo_data {
 	 * for when we lookup people profile or photo information.
 	 */
 	GSList *url_datas;
-	GHashTable *xfer_peer_idstring_map;/*Hey, i dont know, but putting this HashTable next to friends gives a run time fault...*/
-	GSList *cookies;/*contains all cookies, including _y and _t*/
+	GHashTable *xfer_peer_idstring_map;/* Hey, i dont know, but putting this HashTable next to friends gives a run time fault... */
+	GSList *cookies;/* contains all cookies, including _y and _t */
 	
 	/**
 	 * We may receive a list15 in multiple packets with no prior warning as to how many we'll be getting;
@@ -178,6 +203,12 @@ struct yahoo_data {
 	char *current_list15_grp;
 	time_t last_ping;
 	time_t last_keepalive;
+	GHashTable *peers;	/* information about p2p data */
+	int yahoo_p2p_timer;
+	int yahoo_local_p2p_server_fd;
+	int yahoo_p2p_server_watcher;
+	GHashTable *sms_carrier;	/* sms carrier data */
+	guint yahoo_p2p_server_timeout_handle;
 };
 
 #define YAHOO_MAX_STATUS_MESSAGE_LENGTH (255)
@@ -250,4 +281,7 @@ GList *yahoo_attention_types(PurpleAccou
 gboolean yahoo_send_attention(PurpleConnection *gc, const char *username, guint type);
 GList *yahoo_attention_types(PurpleAccount *account);
 
+/* send p2p pkt containing our encoded ip, asking peer to connect to us */
+void yahoo_send_p2p_pkt(PurpleConnection *gc, const char *who, int val_13);
+
 #endif /* _YAHOO_H_ */
============================================================
--- libpurple/protocols/yahoo/yahoo_packet.h	73ca2470ec14b98bfa34d11bb2634e83039c3b30
+++ libpurple/protocols/yahoo/yahoo_packet.h	8e9c2ff523731785e8d9ad1f5d9c04fd9a920ee6
@@ -98,15 +98,18 @@ enum yahoo_service { /* these are easier
 	YAHOO_SERVICE_AVATAR_UPDATE = 0xc7,
 	YAHOO_SERVICE_VERIFY_ID_EXISTS = 0xc8,
 	YAHOO_SERVICE_AUDIBLE = 0xd0,
+	/* YAHOO_SERVICE_CHAT_SESSION = 0xd4,?? Reports start of chat session, gets an id from server */
 	YAHOO_SERVICE_AUTH_REQ_15 = 0xd6,
+	YAHOO_SERVICE_FILETRANS_15 = 0xdc,
+	YAHOO_SERVICE_FILETRANS_INFO_15 = 0xdd,
+	YAHOO_SERVICE_FILETRANS_ACC_15 = 0xde,
+	/* photo sharing services ?? - 0xd2, 0xd7, 0xd8, 0xda */
 	YAHOO_SERVICE_CHGRP_15 = 0xe7,
 	YAHOO_SERVICE_STATUS_15 = 0xf0,
 	YAHOO_SERVICE_LIST_15 = 0xf1,
-	YAHOO_SERVICE_FILETRANS_15 = 0xdc,
-	YAHOO_SERVICE_FILETRANS_INFO_15 = 0xdd,
-	YAHOO_SERVICE_FILETRANS_ACC_15 = 0xde,
 	YAHOO_SERVICE_WEBLOGIN = 0x0226,
 	YAHOO_SERVICE_SMS_MSG = 0x02ea
+	/* YAHOO_SERVICE_DISCONNECT = 0x07d1 Server forces us to disconnect. Is sent with TCP FIN flag set */
 };
 
 struct yahoo_pair {


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