source: protocols/account.c @ fcb2c2e

  /********************************************************************\
  * BitlBee -- An IRC to other IM-networks gateway                     *
  *                                                                    *
  * Copyright 2002-2013 Wilmer van der Gaast and others                *
  \********************************************************************/

/* Account management functions                                         */

/*
  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., 51 Franklin St.,
  Fifth Floor, Boston, MA  02110-1301  USA
*/

#define BITLBEE_CORE
#include "bitlbee.h"
#include "account.h"

static const char* account_protocols_local[] = {
        "gg", NULL
};

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

account_t *account_add( bee_t *bee, struct prpl *prpl, char *user, char *pass )
{
        account_t *a;
        set_t *s;
        char tag[strlen(prpl->name)+10];
        
        if( bee->accounts )
        {
                for( a = bee->accounts; a->next; a = a->next );
                a = a->next = g_new0( account_t, 1 );
        }
        else
        {
                bee->accounts = a = g_new0 ( account_t, 1 );
        }
        
        a->prpl = prpl;
        a->user = g_strdup( user );
        a->pass = g_strdup( pass );
        a->auto_connect = 1;
        a->bee = bee;
        
        s = set_add( &a->set, "auto_connect", "true", set_eval_account, a );
        s->flags |= SET_NOSAVE;
        
        s = set_add( &a->set, "auto_reconnect", "true", set_eval_bool, a );
        
        s = set_add( &a->set, "nick_format", NULL, NULL, a );
        s->flags |= SET_NULL_OK;
        
        s = set_add( &a->set, "nick_source", "handle", set_eval_nick_source, a );
        s->flags |= SET_NOSAVE; /* Just for bw compatibility! */
        
        s = set_add( &a->set, "password", NULL, set_eval_account, a );
        s->flags |= SET_NOSAVE | SET_NULL_OK | SET_PASSWORD;
        
        s = set_add( &a->set, "tag", NULL, set_eval_account, a );
        s->flags |= SET_NOSAVE;
        
        s = set_add( &a->set, "username", NULL, set_eval_account, a );
        s->flags |= SET_NOSAVE | ACC_SET_OFFLINE_ONLY;
        set_setstr( &a->set, "username", user );
        
        /* Hardcode some more clever tag guesses. */
        strcpy( tag, prpl->name );
        if( strcmp( prpl->name, "oscar" ) == 0 )
        {
                if( g_ascii_isdigit( a->user[0] ) )
                        strcpy( tag, "icq" );
                else
                        strcpy( tag, "aim" );
        }
        else if( strcmp( prpl->name, "jabber" ) == 0 )
        {
                if( strstr( a->user, "@gmail.com" ) ||
                    strstr( a->user, "@googlemail.com" ) )
                        strcpy( tag, "gtalk" );
                else if( strstr( a->user, "@chat.facebook.com" ) )
                        strcpy( tag, "fb" );
        }
        
        if( account_by_tag( bee, tag ) )
        {
                char *numpos = tag + strlen( tag );
                int i;

                for( i = 2; i < 10000; i ++ )
                {
                        sprintf( numpos, "%d", i );
                        if( !account_by_tag( bee, tag ) )
                                break;
                }
        }
        set_setstr( &a->set, "tag", tag );
        
        a->nicks = g_hash_table_new_full( g_str_hash, g_str_equal, g_free, g_free );
        
        /* This function adds some more settings (and might want to do more
           things that have to be done now, although I can't think of anything. */
        if( prpl->init )
                prpl->init( a );
        
        s = set_add( &a->set, "away", NULL, set_eval_account, a );
        s->flags |= SET_NULL_OK;
        
        if( a->flags & ACC_FLAG_STATUS_MESSAGE )
        {
                s = set_add( &a->set, "status", NULL, set_eval_account, a );
                s->flags |= SET_NULL_OK;
        }
        
        return a;
}

char *set_eval_account( set_t *set, char *value )
{
        account_t *acc = set->data;
        
        /* Double-check: We refuse to edit on-line accounts. */
        if( set->flags & ACC_SET_OFFLINE_ONLY && acc->ic )
                return SET_INVALID;
        
        if( strcmp( set->key, "server" ) == 0 )
        {
                g_free( acc->server );
                if( value && *value )
                {
                        acc->server = g_strdup( value );
                        return value;
                }
                else
                {
                        acc->server = g_strdup( set->def );
                        return g_strdup( set->def );
                }
        }
        else if( strcmp( set->key, "username" ) == 0 )
        {
                g_free( acc->user );
                acc->user = g_strdup( value );
                return value;
        }
        else if( strcmp( set->key, "password" ) == 0 )
        {
                /* set -del allows /oper to be used to change the password or,
                   iff oauth is enabled, reset the oauth credential magic.
                */
                if( !value ) {
                        if ( set_getbool( &(acc->set), "oauth" ) ) {
                                value = "";
                        } else {
                                value = PASSWORD_PENDING;
                                ((irc_t *)acc->bee->ui_data)->status |= OPER_HACK_ACCOUNT_PASSWORD;
                                irc_rootmsg((irc_t *)acc->bee->ui_data, "You may now use /OPER to set the password");
                        }
                }
                
                g_free( acc->pass );
                acc->pass = g_strdup( value );
                return NULL;    /* password shouldn't be visible in plaintext! */
        }
        else if( strcmp( set->key, "tag" ) == 0 )
        {
                account_t *oa;
                
                /* Enforce uniqueness. */
                if( ( oa = account_by_tag( acc->bee, value ) ) && oa != acc )
                        return SET_INVALID;
                
                g_free( acc->tag );
                acc->tag = g_strdup( value );
                return value;
        }
        else if( strcmp( set->key, "auto_connect" ) == 0 )
        {
                if( !is_bool( value ) )
                        return SET_INVALID;
                
                acc->auto_connect = bool2int( value );
                return value;
        }
        else if( strcmp( set->key, "away" ) == 0 ||
                 strcmp( set->key, "status" ) == 0 )
        {
                if( acc->ic && acc->ic->flags & OPT_LOGGED_IN )
                {
                        /* If we're currently on-line, set the var now already
                           (bit of a hack) and send an update. */
                        g_free( set->value );
                        set->value = g_strdup( value );
                        
                        imc_away_send_update( acc->ic );
                }
                
                return value;
        }
        
        return SET_INVALID;
}

/* For bw compatibility, have this write-only setting. */
static char *set_eval_nick_source( set_t *set, char *value )
{
        account_t *a = set->data;
        
        if( strcmp( value, "full_name" ) == 0 )
                set_setstr( &a->set, "nick_format", "%full_name" );
        else if( strcmp( value, "first_name" ) == 0 )
                set_setstr( &a->set, "nick_format", "%first_name" );
        else
                set_setstr( &a->set, "nick_format", "%-@nick" );
        
        return value;
}

account_t *account_get( bee_t *bee, const char *id )
{
        account_t *a, *ret = NULL;
        char *handle, *s;
        int nr;
        
        /* Tags get priority above anything else. */
        if( ( a = account_by_tag( bee, id ) ) )
                return a;
        
        /* This checks if the id string ends with (...) */
        if( ( handle = strchr( id, '(' ) ) && ( s = strchr( handle, ')' ) ) && s[1] == 0 )
        {
                struct prpl *proto;
                
                *s = *handle = 0;
                handle ++;
                
                if( ( proto = find_protocol( id ) ) )
                {
                        for( a = bee->accounts; a; a = a->next )
                                if( a->prpl == proto &&
                                    a->prpl->handle_cmp( handle, a->user ) == 0 )
                                        ret = a;
                }
                
                /* Restore the string. */
                handle --;
                *handle = '(';
                *s = ')';
                
                if( ret )
                        return ret;
        }
        
        if( sscanf( id, "%d", &nr ) == 1 && nr < 1000 )
        {
                for( a = bee->accounts; a; a = a->next )
                        if( ( nr-- ) == 0 )
                                return( a );
                
                return( NULL );
        }
        
        for( a = bee->accounts; a; a = a->next )
        {
                if( g_strcasecmp( id, a->prpl->name ) == 0 )
                {
                        if( !ret )
                                ret = a;
                        else
                                return( NULL ); /* We don't want to match more than one... */
                }
                else if( strstr( a->user, id ) )
                {
                        if( !ret )
                                ret = a;
                        else
                                return( NULL );
                }
        }
        
        return( ret );
}

account_t *account_by_tag( bee_t *bee, const char *tag )
{
        account_t *a;
        
        for( a = bee->accounts; a; a = a->next )
                if( a->tag && g_strcasecmp( tag, a->tag ) == 0 )
                        return a;
        
        return NULL;
}

void account_del( bee_t *bee, account_t *acc )
{
        account_t *a, *l = NULL;
        
        if( acc->ic )
                /* Caller should have checked, accounts still in use can't be deleted. */
                return;
        
        for( a = bee->accounts; a; a = (l=a)->next )
                if( a == acc )
                {
                        if( l )
                                l->next = a->next;
                        else
                                bee->accounts = a->next;
                        
                        /** FIXME
                        for( c = bee->chatrooms; c; c = nc )
                        {
                                nc = c->next;
                                if( acc == c->acc )
                                        chat_del( bee, c );
                        }
                        */
                        
                        while( a->set )
                                set_del( &a->set, a->set->key );
                        
                        g_hash_table_destroy( a->nicks );
                        
                        g_free( a->tag );
                        g_free( a->user );
                        g_free( a->pass );
                        g_free( a->server );
                        if( a->reconnect )      /* This prevents any reconnect still queued to happen */
                                cancel_auto_reconnect( a );
                        g_free( a );
                        
                        break;
                }
}

static gboolean account_on_timeout( gpointer d, gint fd, b_input_condition cond );

void account_on( bee_t *bee, account_t *a )
{
        GHashTableIter nicks;
        gpointer k, v;

        if( a->ic )
        {
                /* Trying to enable an already-enabled account */
                return;
        }
        
        cancel_auto_reconnect( a );
        
        a->reconnect = 0;
        a->prpl->login( a );
        
        if( a->ic && !( a->ic->flags & ( OPT_SLOW_LOGIN | OPT_LOGGED_IN ) ) )
                a->ic->keepalive = b_timeout_add( 120000, account_on_timeout, a->ic );

        if( a->flags & ACC_FLAG_LOCAL )
        {
                g_hash_table_iter_init(&nicks, a->nicks);
                while( g_hash_table_iter_next( &nicks, &k, &v ) )
                {
                        a->prpl->add_buddy( a->ic, (char*) k, NULL );
                }
        }
}

void account_off( bee_t *bee, account_t *a )
{
        imc_logout( a->ic, FALSE );
        a->ic = NULL;
        if( a->reconnect )
        {
                /* Shouldn't happen */
                cancel_auto_reconnect( a );
        }
}

static gboolean account_on_timeout( gpointer d, gint fd, b_input_condition cond )
{
        struct im_connection *ic = d;
        
        if( !( ic->flags & ( OPT_SLOW_LOGIN | OPT_LOGGED_IN ) ) )
        {
                imcb_error( ic, "Connection timeout" );
                imc_logout( ic, TRUE );
        }
        
        return FALSE;
}

struct account_reconnect_delay
{
        int start;
        char op;
        int step;
        int max;
};

int account_reconnect_delay_parse( char *value, struct account_reconnect_delay *p )
{
        memset( p, 0, sizeof( *p ) );
        /* A whole day seems like a sane "maximum maximum". */
        p->max = 86400;
        
        /* Format: /[0-9]+([*+][0-9]+(<[0-9+])?)?/ */
        while( *value && g_ascii_isdigit( *value ) )
                p->start = p->start * 10 + *value++ - '0';
        
        /* Sure, call me evil for implementing my own fscanf here, but it's
           dead simple and I immediately know where to continue parsing. */
        
        if( *value == 0 )
                /* If the string ends now, the delay is constant. */
                return 1;
        else if( *value != '+' && *value != '*' )
                /* Otherwise allow either a + or a * */
                return 0;
        
        p->op = *value++;
        
        /* + or * the delay by this number every time. */
        while( *value && g_ascii_isdigit( *value ) )
                p->step = p->step * 10 + *value++ - '0';
        
        if( *value == 0 )
                /* Use the default maximum (one day). */
                return 1;
        else if( *value != '<' )
                return 0;
        
        p->max = 0;
        value ++;
        while( *value && g_ascii_isdigit( *value ) )
                p->max = p->max * 10 + *value++ - '0';
        
        return p->max > 0;
}

char *set_eval_account_reconnect_delay( set_t *set, char *value )
{
        struct account_reconnect_delay p;
        
        return account_reconnect_delay_parse( value, &p ) ? value : SET_INVALID;
}

int account_reconnect_delay( account_t *a )
{
        char *setting = set_getstr( &a->bee->set, "auto_reconnect_delay" );
        struct account_reconnect_delay p;
        
        if( account_reconnect_delay_parse( setting, &p ) )
        {
                if( a->auto_reconnect_delay == 0 )
                        a->auto_reconnect_delay = p.start;
                else if( p.op == '+' )
                        a->auto_reconnect_delay += p.step;
                else if( p.op == '*' )
                        a->auto_reconnect_delay *= p.step;
                
                if( a->auto_reconnect_delay > p.max )
                        a->auto_reconnect_delay = p.max;
        }
        else
        {
                a->auto_reconnect_delay = 0;
        }
        
        return a->auto_reconnect_delay;
}

int protocol_account_islocal( const char* protocol )
{
        const char** p = account_protocols_local;
        do {
                if( strcmp( *p, protocol ) == 0 )
                        return 1;
        } while( *( ++p ) );
        return 0;
}