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/** passport.c
*
* Functions to login to Microsoft Passport service for Messenger
* Copyright (C) 2004-2008 Wilmer van der Gaast <wilmer@gaast.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation
*
* This program is distributed in the hope that is will be useful,
* bit WITHOU 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
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include "http_client.h"
#include "passport.h"
#include "msn.h"
#include "bitlbee.h"
#include "url.h"
#include "misc.h"
#include "xmltree.h"
#include <ctype.h>
#include <errno.h>
static int passport_get_token_real( struct msn_auth_data *mad );
static void passport_get_token_ready( struct http_request *req );
int passport_get_token( gpointer func, gpointer data, char *username, char *password, char *cookie )
{
struct msn_auth_data *mad = g_new0( struct msn_auth_data, 1 );
int i;
mad->username = g_strdup( username );
mad->password = g_strdup( password );
mad->cookie = g_strdup( cookie );
mad->callback = func;
mad->data = data;
mad->url = g_strdup( SOAP_AUTHENTICATION_URL );
mad->ttl = 3; /* Max. # of redirects. */
/* HTTP-escape stuff and s/,/&/ */
http_decode( mad->cookie );
for( i = 0; mad->cookie[i]; i ++ )
if( mad->cookie[i] == ',' )
mad->cookie[i] = '&';
/* Microsoft doesn't allow password longer than 16 chars and silently
fails authentication if you give the "full version" of your passwd. */
if( strlen( mad->password ) > MAX_PASSPORT_PWLEN )
mad->password[MAX_PASSPORT_PWLEN] = 0;
return passport_get_token_real( mad );
}
static int passport_get_token_real( struct msn_auth_data *mad )
{
char *post_payload, *post_request;
struct http_request *req;
url_t url;
url_set( &url, mad->url );
post_payload = g_markup_printf_escaped( SOAP_AUTHENTICATION_PAYLOAD,
mad->username,
mad->password,
mad->cookie );
post_request = g_strdup_printf( SOAP_AUTHENTICATION_REQUEST,
url.file, url.host,
(int) strlen( post_payload ),
post_payload );
req = http_dorequest( url.host, url.port, 1, post_request,
passport_get_token_ready, mad );
g_free( post_request );
g_free( post_payload );
return req != NULL;
}
static xt_status passport_xt_extract_token( struct xt_node *node, gpointer data );
static xt_status passport_xt_handle_fault( struct xt_node *node, gpointer data );
static const struct xt_handler_entry passport_xt_handlers[] = {
{ "wsse:BinarySecurityToken", "wst:RequestedSecurityToken", passport_xt_extract_token },
{ "S:Fault", "S:Envelope", passport_xt_handle_fault },
{ NULL, NULL, NULL }
};
static void passport_get_token_ready( struct http_request *req )
{
struct msn_auth_data *mad = req->data;
struct xt_parser *parser;
g_free( mad->url );
g_free( mad->error );
mad->url = mad->error = NULL;
if( req->status_code == 200 )
{
parser = xt_new( passport_xt_handlers, mad );
xt_feed( parser, req->reply_body, req->body_size );
xt_handle( parser, NULL, -1 );
xt_free( parser );
}
else
{
mad->error = g_strdup_printf( "HTTP error %d (%s)", req->status_code,
req->status_string ? req->status_string : "unknown" );
}
if( mad->error == NULL && mad->token == NULL )
mad->error = g_strdup( "Could not parse Passport server response" );
if( mad->url && mad->token == NULL )
{
passport_get_token_real( mad );
}
else
{
mad->callback( mad );
g_free( mad->url );
g_free( mad->username );
g_free( mad->password );
g_free( mad->cookie );
g_free( mad->token );
g_free( mad->error );
g_free( mad );
}
}
static xt_status passport_xt_extract_token( struct xt_node *node, gpointer data )
{
struct msn_auth_data *mad = data;
char *s;
if( ( s = xt_find_attr( node, "Id" ) ) &&
( strncmp( s, "Compact", 7 ) == 0 ||
strncmp( s, "PPToken", 7 ) == 0 ) )
mad->token = g_memdup( node->text, node->text_len + 1 );
return XT_HANDLED;
}
static xt_status passport_xt_handle_fault( struct xt_node *node, gpointer data )
{
struct msn_auth_data *mad = data;
struct xt_node *code = xt_find_node( node->children, "faultcode" );
struct xt_node *string = xt_find_node( node->children, "faultstring" );
struct xt_node *redirect = xt_find_node( node->children, "psf:redirectUrl" );
if( redirect && redirect->text_len && mad->ttl-- > 0 )
mad->url = g_memdup( redirect->text, redirect->text_len + 1 );
if( code == NULL || code->text_len == 0 )
mad->error = g_strdup( "Unknown error" );
else
mad->error = g_strdup_printf( "%s (%s)", code->text, string && string->text_len ?
string->text : "no description available" );
return XT_HANDLED;
}
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