source: protocols/msn/msn.c @ 0b4a0db

  /********************************************************************\
  * 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_acc_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 gaim_connection *gc = new_gaim_conn( acc );
        struct msn_data *md = g_new0( struct msn_data, 1 );
        
        set_login_progress( gc, 1, "Connecting" );
        
        gc->proto_data = md;
        md->fd = -1;
        
        if( strchr( acc->user, '@' ) == NULL )
        {
                hide_login_progress( gc, "Invalid account name" );
                signoff( gc );
                return;
        }
        
        md->fd = proxy_connect( "messenger.hotmail.com", 1863, msn_ns_connected, gc );
        if( md->fd < 0 )
        {
                hide_login_progress( gc, "Could not connect to server" );
                signoff( gc );
        }
        else
        {
                md->gc = gc;
                md->away_state = msn_away_state_list;
                
                msn_connections = g_slist_append( msn_connections, gc );
        }
}

static void msn_close( struct gaim_connection *gc )
{
        struct msn_data *md = gc->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;
                        
                                serv_got_crap( gc, "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 = gc->permit; l; l = l->next )
                g_free( l->data );
        g_slist_free( gc->permit );
        
        for( l = gc->deny; l; l = l->next )
                g_free( l->data );
        g_slist_free( gc->deny );
        
        msn_connections = g_slist_remove( msn_connections, gc );
}

static int msn_send_im( struct gaim_connection *gc, char *who, char *message, int len, int away )
{
        struct msn_switchboard *sb;
        struct msn_data *md = gc->proto_data;
        
        if( ( sb = msn_sb_by_handle( gc, 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( gc ) ) )
                {
                        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( gc, 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 gaim_connection *gc )
{
        GList *l = NULL;
        int i;
        
        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 char *msn_get_status_string( struct gaim_connection *gc, int number )
{
        const struct msn_away_state *st = msn_away_state_by_number( number );
        
        if( st )
                return( (char*) st->name );
        else
                return( "" );
}

static void msn_set_away( struct gaim_connection *gc, char *state, char *message )
{
        char buf[1024];
        struct msn_data *md = gc->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( gc, buf, strlen( buf ) );
}

static void msn_set_info( struct gaim_connection *gc, char *info )
{
        msn_set_display_name( set_find( &gc->acc->set, "display_name" ), info );
}

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

static void msn_add_buddy( struct gaim_connection *gc, char *who )
{
        msn_buddy_list_add( gc, "FL", who, who );
}

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

static int msn_chat_send( struct gaim_connection *gc, int id, char *message )
{
        struct msn_switchboard *sb = msn_sb_by_id( gc, id );
        
        if( sb )
                return( msn_sb_sendmessage( sb, message ) );
        else
                return( 0 );
}

static void msn_chat_invite( struct gaim_connection *gc, int id, char *msg, char *who )
{
        struct msn_switchboard *sb = msn_sb_by_id( gc, id );
        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 gaim_connection *gc, int id )
{
        struct msn_switchboard *sb = msn_sb_by_id( gc, id );
        
        if( sb )
                msn_sb_write( sb, "OUT\r\n", 5 );
}

static int msn_chat_open( struct gaim_connection *gc, char *who )
{
        struct msn_switchboard *sb;
        struct msn_data *md = gc->proto_data;
        char buf[1024];
        
        if( ( sb = msn_sb_by_handle( gc, who ) ) )
        {
                debug( "Converting existing switchboard to %s to a groupchat", who );
                msn_sb_to_chat( sb );
                return( 1 );
        }
        else
        {
                struct msn_message *m;
                
                if( ( sb = msn_sb_spare( gc ) ) )
                {
                        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 ) ) )
                        {
                                msn_sb_to_chat( sb );
                                return( 1 );
                        }
                }
                
                /* 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( gc, 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 );
                
                return( 1 );
        }
        
        return( 0 );
}

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

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

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

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

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

static int msn_send_typing( struct gaim_connection *gc, char *who, int typing )
{
        if( typing )
                return( msn_send_im( gc, who, TYPING_NOTIFICATION_MESSAGE, strlen( TYPING_NOTIFICATION_MESSAGE ), 0 ) );
        else
                return( 1 );
}

static char *msn_set_display_name( set_t *set, char *value )
{
        account_t *acc = set->data;
        struct gaim_connection *gc = acc->gc;
        struct msn_data *md;
        char buf[1024], *fn, *s;
        int i;
        
        /* Double-check. */
        if( gc == NULL )
                return NULL;
        
        md = gc->proto_data;
        
        if( strlen( value ) > 129 )
        {
                serv_got_crap( gc, "Maximum name length exceeded" );
                return NULL;
        }
        
        /* Of course we could use http_encode() here, but when we encode
           every character, the server is less likely to complain about the
           chosen name. However, the MSN server doesn't seem to like escaped
           non-ASCII chars, so we keep those unescaped. */
        s = fn = g_new0( char, strlen( value ) * 3 + 1 );
        for( i = 0; value[i]; i ++ )
                if( value[i] & 128 )
                {
                        *s = value[i];
                        s ++;
                }
                else
                {
                        g_snprintf( s, 4, "%%%02X", value[i] );
                        s += 3;
                }
        
        g_snprintf( buf, sizeof( buf ), "REA %d %s %s\r\n", ++md->trId, gc->username, fn );
        msn_write( gc, 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_init()
{
        struct prpl *ret = g_new0(struct prpl, 1);
        
        ret->name = "msn";
        ret->login = msn_login;
        ret->acc_init = msn_acc_init;
        ret->close = msn_close;
        ret->send_im = msn_send_im;
        ret->away_states = msn_away_states;
        ret->get_status_string = msn_get_status_string;
        ret->set_away = msn_set_away;
        ret->set_info = msn_set_info;
        ret->get_info = msn_get_info;
        ret->add_buddy = msn_add_buddy;
        ret->remove_buddy = msn_remove_buddy;
        ret->chat_send = msn_chat_send;
        ret->chat_invite = msn_chat_invite;
        ret->chat_leave = msn_chat_leave;
        ret->chat_open = msn_chat_open;
        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);
}