source: protocols/msn/msn.c @ 256899f

  /********************************************************************\
  * BitlBee -- An IRC to other IM-networks gateway                     *
  *                                                                    *
  * Copyright 2002-2004 Wilmer van der Gaast and others                *
  \********************************************************************/

/* MSN module - Main file; functions to be called from BitlBee          */

/*
  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License with
  the Debian GNU/Linux distribution in /usr/share/common-licenses/GPL;
  if not, write to the Free Software Foundation, Inc., 59 Temple Place,
  Suite 330, Boston, MA  02111-1307  USA
*/

#include "nogaim.h"
#include "msn.h"

static char *msn_set_display_name( set_t *set, char *value );

static void msn_init( account_t *acc )
{
        set_t *s;
        
        s = set_add( &acc->set, "display_name", NULL, msn_set_display_name, acc );
        s->flags |= ACC_SET_NOSAVE | ACC_SET_ONLINE_ONLY;
}

static void msn_login( account_t *acc )
{
        struct im_connection *ic = imcb_new( acc );
        struct msn_data *md = g_new0( struct msn_data, 1 );
        
        ic->proto_data = md;
        md->fd = -1;
        
        if( strchr( acc->user, '@' ) == NULL )
        {
                imcb_error( ic, "Invalid account name" );
                imc_logout( ic, FALSE );
                return;
        }
        
        imcb_log( ic, "Connecting" );
        
        md->fd = proxy_connect( "messenger.hotmail.com", 1863, msn_ns_connected, ic );
        if( md->fd < 0 )
        {
                imcb_error( ic, "Could not connect to server" );
                imc_logout( ic, TRUE );
                return;
        }
        
        md->ic = ic;
        md->away_state = msn_away_state_list;
        
        msn_connections = g_slist_append( msn_connections, ic );
}

static void msn_logout( struct im_connection *ic )
{
        struct msn_data *md = ic->proto_data;
        GSList *l;
        
        if( md )
        {
                if( md->fd >= 0 )
                        closesocket( md->fd );
                
                if( md->handler )
                {
                        if( md->handler->rxq ) g_free( md->handler->rxq );
                        if( md->handler->cmd_text ) g_free( md->handler->cmd_text );
                        g_free( md->handler );
                }
                
                while( md->switchboards )
                        msn_sb_destroy( md->switchboards->data );
                
                if( md->msgq )
                {
                        struct msn_message *m;
                        
                        for( l = md->msgq; l; l = l->next )
                        {
                                m = l->data;
                        
                                imcb_log( ic, "Warning: Closing down MSN connection with unsent message to %s, you'll have to resend it.", m->who );
                                g_free( m->who );
                                g_free( m->text );
                                g_free( m );
                        }
                        g_slist_free( md->msgq );
                }
                
                while( md->groupcount > 0 )
                        g_free( md->grouplist[--md->groupcount] );
                g_free( md->grouplist );
                
                g_free( md );
        }
        
        for( l = ic->permit; l; l = l->next )
                g_free( l->data );
        g_slist_free( ic->permit );
        
        for( l = ic->deny; l; l = l->next )
                g_free( l->data );
        g_slist_free( ic->deny );
        
        msn_connections = g_slist_remove( msn_connections, ic );
}

static int msn_buddy_msg( struct im_connection *ic, char *who, char *message, int away )
{
        struct msn_switchboard *sb;
        struct msn_data *md = ic->proto_data;
        
        if( ( sb = msn_sb_by_handle( ic, who ) ) )
        {
                return( msn_sb_sendmessage( sb, message ) );
        }
        else
        {
                struct msn_message *m;
                char buf[1024];
                
                /* Create a message. We have to arrange a usable switchboard, and send the message later. */
                m = g_new0( struct msn_message, 1 );
                m->who = g_strdup( who );
                m->text = g_strdup( message );
                
                /* FIXME: *CHECK* the reliability of using spare sb's! */
                if( ( sb = msn_sb_spare( ic ) ) )
                {
                        debug( "Trying to use a spare switchboard to message %s", who );
                        
                        sb->who = g_strdup( who );
                        g_snprintf( buf, sizeof( buf ), "CAL %d %s\r\n", ++sb->trId, who );
                        if( msn_sb_write( sb, buf, strlen( buf ) ) )
                        {
                                /* He/She should join the switchboard soon, let's queue the message. */
                                sb->msgq = g_slist_append( sb->msgq, m );
                                return( 1 );
                        }
                }
                
                debug( "Creating a new switchboard to message %s", who );
                
                /* If we reach this line, there was no spare switchboard, so let's make one. */
                g_snprintf( buf, sizeof( buf ), "XFR %d SB\r\n", ++md->trId );
                if( !msn_write( ic, buf, strlen( buf ) ) )
                {
                        g_free( m->who );
                        g_free( m->text );
                        g_free( m );
                        
                        return( 0 );
                }
                
                /* And queue the message to md. We'll pick it up when the switchboard comes up. */
                md->msgq = g_slist_append( md->msgq, m );
                
                /* FIXME: If the switchboard creation fails, the message will not be sent. */
                
                return( 1 );
        }
        
        return( 0 );
}

static GList *msn_away_states( struct im_connection *ic )
{
        static GList *l = NULL;
        int i;
        
        if( l == NULL )
                for( i = 0; msn_away_state_list[i].number > -1; i ++ )
                        l = g_list_append( l, (void*) msn_away_state_list[i].name );
        
        return l;
}

static void msn_set_away( struct im_connection *ic, char *state, char *message )
{
        char buf[1024];
        struct msn_data *md = ic->proto_data;
        const struct msn_away_state *st;
        
        if( strcmp( state, GAIM_AWAY_CUSTOM ) == 0 )
                st = msn_away_state_by_name( "Away" );
        else
                st = msn_away_state_by_name( state );
        
        if( !st ) st = msn_away_state_list;
        md->away_state = st;
        
        g_snprintf( buf, sizeof( buf ), "CHG %d %s\r\n", ++md->trId, st->code );
        msn_write( ic, buf, strlen( buf ) );
}

static void msn_set_my_name( struct im_connection *ic, char *info )
{
        msn_set_display_name( set_find( &ic->acc->set, "display_name" ), info );
}

static void msn_get_info(struct im_connection *ic, char *who) 
{
        /* Just make an URL and let the user fetch the info */
        imcb_log( ic, "%s\n%s: %s%s", _("User Info"), _("For now, fetch yourself"), PROFILE_URL, who );
}

static void msn_add_buddy( struct im_connection *ic, char *who, char *group )
{
        msn_buddy_list_add( ic, "FL", who, who );
}

static void msn_remove_buddy( struct im_connection *ic, char *who, char *group )
{
        msn_buddy_list_remove( ic, "FL", who );
}

static void msn_chat_msg( struct groupchat *c, char *message, int flags )
{
        struct msn_switchboard *sb = msn_sb_by_chat( c );
        
        if( sb )
                msn_sb_sendmessage( sb, message );
        /* FIXME: Error handling (although this can't happen unless something's
           already severely broken) disappeared here! */
}

static void msn_chat_invite( struct groupchat *c, char *msg, char *who )
{
        struct msn_switchboard *sb = msn_sb_by_chat( c );
        char buf[1024];
        
        if( sb )
        {
                g_snprintf( buf, sizeof( buf ), "CAL %d %s\r\n", ++sb->trId, who );
                msn_sb_write( sb, buf, strlen( buf ) );
        }
}

static void msn_chat_leave( struct groupchat *c )
{
        struct msn_switchboard *sb = msn_sb_by_chat( c );
        
        if( sb )
                msn_sb_write( sb, "OUT\r\n", 5 );
}

static struct groupchat *msn_chat_with( struct im_connection *ic, char *who )
{
        struct msn_switchboard *sb;
        struct msn_data *md = ic->proto_data;
        char buf[1024];
        
        if( ( sb = msn_sb_by_handle( ic, who ) ) )
        {
                debug( "Converting existing switchboard to %s to a groupchat", who );
                return msn_sb_to_chat( sb );
        }
        else
        {
                struct msn_message *m;
                
                if( ( sb = msn_sb_spare( ic ) ) )
                {
                        debug( "Trying to reuse an existing switchboard as a groupchat with %s", who );
                        g_snprintf( buf, sizeof( buf ), "CAL %d %s\r\n", ++sb->trId, who );
                        if( msn_sb_write( sb, buf, strlen( buf ) ) )
                                return msn_sb_to_chat( sb );
                }
                
                /* If the stuff above failed for some reason: */
                debug( "Creating a new switchboard to groupchat with %s", who );
                
                /* Request a new switchboard. */
                g_snprintf( buf, sizeof( buf ), "XFR %d SB\r\n", ++md->trId );
                if( !msn_write( ic, buf, strlen( buf ) ) )
                        return( 0 );
                
                /* Create a magic message. This is quite hackish, but who cares? :-P */
                m = g_new0( struct msn_message, 1 );
                m->who = g_strdup( who );
                m->text = g_strdup( GROUPCHAT_SWITCHBOARD_MESSAGE );
                
                /* Queue the magic message and cross your fingers. */
                md->msgq = g_slist_append( md->msgq, m );
                
                /* FIXME: Can I try to return something here already? */
                return NULL;
        }
        
        return NULL;
}

static void msn_keepalive( struct im_connection *ic )
{
        msn_write( ic, "PNG\r\n", strlen( "PNG\r\n" ) );
}

static void msn_add_permit( struct im_connection *ic, char *who )
{
        msn_buddy_list_add( ic, "AL", who, who );
}

static void msn_rem_permit( struct im_connection *ic, char *who )
{
        msn_buddy_list_remove( ic, "AL", who );
}

static void msn_add_deny( struct im_connection *ic, char *who )
{
        struct msn_switchboard *sb;
        
        msn_buddy_list_add( ic, "BL", who, who );
        
        /* If there's still a conversation with this person, close it. */
        if( ( sb = msn_sb_by_handle( ic, who ) ) )
        {
                msn_sb_destroy( sb );
        }
}

static void msn_rem_deny( struct im_connection *ic, char *who )
{
        msn_buddy_list_remove( ic, "BL", who );
}

static int msn_send_typing( struct im_connection *ic, char *who, int typing )
{
        if( typing & OPT_TYPING )
                return( msn_buddy_msg( ic, who, TYPING_NOTIFICATION_MESSAGE, 0 ) );
        else
                return( 1 );
}

static char *msn_set_display_name( set_t *set, char *value )
{
        account_t *acc = set->data;
        struct im_connection *ic = acc->ic;
        struct msn_data *md;
        char buf[1024], *fn;
        
        /* Double-check. */
        if( ic == NULL )
                return NULL;
        
        md = ic->proto_data;
        
        if( strlen( value ) > 129 )
        {
                imcb_log( ic, "Maximum name length exceeded" );
                return NULL;
        }
        
        fn = msn_http_encode( value );
        
        g_snprintf( buf, sizeof( buf ), "REA %d %s %s\r\n", ++md->trId, ic->acc->user, fn );
        msn_write( ic, buf, strlen( buf ) );
        g_free( fn );
        
        /* Returning NULL would be better, because the server still has to
           confirm the name change. However, it looks a bit confusing to the
           user. */
        return value;
}

void msn_initmodule()
{
        struct prpl *ret = g_new0(struct prpl, 1);
        
        ret->name = "msn";
        ret->login = msn_login;
        ret->init = msn_init;
        ret->logout = msn_logout;
        ret->buddy_msg = msn_buddy_msg;
        ret->away_states = msn_away_states;
        ret->set_away = msn_set_away;
        ret->get_info = msn_get_info;
        ret->set_my_name = msn_set_my_name;
        ret->add_buddy = msn_add_buddy;
        ret->remove_buddy = msn_remove_buddy;
        ret->chat_msg = msn_chat_msg;
        ret->chat_invite = msn_chat_invite;
        ret->chat_leave = msn_chat_leave;
        ret->chat_with = msn_chat_with;
        ret->keepalive = msn_keepalive;
        ret->add_permit = msn_add_permit;
        ret->rem_permit = msn_rem_permit;
        ret->add_deny = msn_add_deny;
        ret->rem_deny = msn_rem_deny;
        ret->send_typing = msn_send_typing;
        ret->handle_cmp = g_strcasecmp;

        register_protocol(ret);
}