Index: protocols/account.c
===================================================================
--- protocols/account.c	(revision 3ddb7477f51d3cf1632e2a8b6f7da4c0609a52cb)
+++ protocols/account.c	(revision 3ddb7477f51d3cf1632e2a8b6f7da4c0609a52cb)
@@ -0,0 +1,359 @@
+  /********************************************************************\
+  * BitlBee -- An IRC to other IM-networks gateway                     *
+  *                                                                    *
+  * Copyright 2002-2010 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., 59 Temple Place,
+  Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#define BITLBEE_CORE
+#include "bitlbee.h"
+#include "account.h"
+#include "chat.h"
+
+account_t *account_add( irc_t *irc, struct prpl *prpl, char *user, char *pass )
+{
+	account_t *a;
+	set_t *s;
+	
+	if( irc->accounts )
+	{
+		for( a = irc->accounts; a->next; a = a->next );
+		a = a->next = g_new0( account_t, 1 );
+	}
+	else
+	{
+		irc->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->irc = irc;
+	
+	s = set_add( &a->set, "auto_connect", "true", set_eval_account, a );
+	s->flags |= ACC_SET_NOSAVE;
+	
+	s = set_add( &a->set, "auto_reconnect", "true", set_eval_bool, a );
+	
+	s = set_add( &a->set, "nick_source", "handle", NULL, a );
+	
+	s = set_add( &a->set, "password", NULL, set_eval_account, a );
+	s->flags |= ACC_SET_NOSAVE | SET_NULL_OK;
+	
+	s = set_add( &a->set, "username", NULL, set_eval_account, a );
+	s->flags |= ACC_SET_NOSAVE | ACC_SET_OFFLINE_ONLY;
+	set_setstr( &a->set, "username", user );
+	
+	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 )
+	{
+		if( value )
+		{
+			g_free( acc->pass );
+			acc->pass = g_strdup( value );
+			return NULL;	/* password shouldn't be visible in plaintext! */
+		}
+		else
+		{
+			/* NULL can (should) be stored in the set_t
+			   variable, but is otherwise not correct. */
+			return SET_INVALID;
+		}
+	}
+	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;
+}
+
+account_t *account_get( irc_t *irc, char *id )
+{
+	account_t *a, *ret = NULL;
+	char *handle, *s;
+	int nr;
+	
+	/* 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 = irc->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 = irc->accounts; a; a = a->next )
+			if( ( nr-- ) == 0 )
+				return( a );
+		
+		return( NULL );
+	}
+	
+	for( a = irc->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 );
+}
+
+void account_del( irc_t *irc, account_t *acc )
+{
+	account_t *a, *l = NULL;
+	struct chat *c, *nc;
+	
+	if( acc->ic )
+		/* Caller should have checked, accounts still in use can't be deleted. */
+		return;
+	
+	for( a = irc->accounts; a; a = (l=a)->next )
+		if( a == acc )
+		{
+			if( l )
+				l->next = a->next;
+			else
+				irc->accounts = a->next;
+			
+			for( c = irc->chatrooms; c; c = nc )
+			{
+				nc = c->next;
+				if( acc == c->acc )
+					chat_del( irc, c );
+			}
+			
+			while( a->set )
+				set_del( &a->set, a->set->key );
+			
+			g_hash_table_destroy( a->nicks );
+			
+			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;
+		}
+}
+
+void account_on( irc_t *irc, account_t *a )
+{
+	if( a->ic )
+	{
+		/* Trying to enable an already-enabled account */
+		return;
+	}
+	
+	cancel_auto_reconnect( a );
+	
+	a->reconnect = 0;
+	a->prpl->login( a );
+}
+
+void account_off( irc_t *irc, account_t *a )
+{
+	imc_logout( a->ic, FALSE );
+	a->ic = NULL;
+	if( a->reconnect )
+	{
+		/* Shouldn't happen */
+		cancel_auto_reconnect( a );
+	}
+}
+
+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 && 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 && 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 && 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->irc->b->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;
+}
