/usr/share/php/Horde/ActiveSync/Request/Autodiscover.php is in php-horde-activesync 2.19.2-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/**
* Horde_ActiveSync_Request_Autodiscover::
*
* @license http://www.horde.org/licenses/gpl GPLv2
* NOTE: According to sec. 8 of the GENERAL PUBLIC LICENSE (GPL),
* Version 2, the distribution of the Horde_ActiveSync module in or
* to the United States of America is excluded from the scope of this
* license.
* @copyright 2012-2014 Horde LLC (http://www.horde.org)
* @author Michael J Rubinsky <mrubinsk@horde.org>
* @package ActiveSync
*/
/**
* ActiveSync Handler for Autodiscover requests.
*
* @license http://www.horde.org/licenses/gpl GPLv2
* NOTE: According to sec. 8 of the GENERAL PUBLIC LICENSE (GPL),
* Version 2, the distribution of the Horde_ActiveSync module in or
* to the United States of America is excluded from the scope of this
* license.
* @copyright 2012-2014 Horde LLC (http://www.horde.org)
* @author Michael J Rubinsky <mrubinsk@horde.org>
* @package ActiveSync
* @internal
*/
class Horde_ActiveSync_Request_Autodiscover extends Horde_ActiveSync_Request_Base
{
/**
* Handle request
*
* @return text The content type of the response (text/xml).
*/
public function handle(Horde_Controller_Request $request = null)
{
$parser = xml_parser_create();
xml_parse_into_struct(
$parser,
$this->_decoder->getStream()->getString(),
$values);
// Get $_SERVER
$server = $request->getServerVars();
// Some broken clients *cough* android *cough* don't send the actual
// XML data structure at all, but instead use the email address as
// the username in the HTTP_AUTHENTICATION data. There are so many things
// wrong with this, but try to work around it if we can.
if (empty($values) && !empty($server['HTTP_AUTHORIZATION'])) {
$hash = base64_decode(str_replace('Basic ', '', $server['HTTP_AUTHORIZATION']));
if (strpos($hash, ':') !== false) {
list($email, $pass) = explode(':', $hash, 2);
}
} elseif (empty($values)) {
throw new Horde_Exception_AuthenticationFailure('No username provided.');
} else {
$email = $values[2]['value'];
}
// Need to override the username since AUTODISCOVER always uses email
// address.
$credentials = new Horde_ActiveSync_Credentials($this->_activeSync);
$credentials->username = $email;
if (!$this->_activeSync->authenticate($credentials)) {
throw new Horde_Exception_AuthenticationFailure();
}
if (!empty($values)) {
$params = array('request_schema' => trim($values[0]['attributes']['XMLNS']));
// Response Schema is not in a set place.
foreach ($values as $value) {
if ($value['tag'] == 'ACCEPTABLERESPONSESCHEMA') {
$params['response_schema'] = trim($value['value']);
break;
}
}
} else {
// Assume broken clients want these schemas.
$params = array(
'request_schema' => 'http://schemas.microsoft.com/exchange/autodiscover/mobilesync/requestschema/2006',
'response_schema' => 'http://schemas.microsoft.com/exchange/autodiscover/mobilesync/responseschema/2006'
);
}
$results = $this->_driver->autoDiscover($params);
if (empty($results['raw_xml'])) {
$this->_encoder->getStream()->add($this->_buildResponseString($results));
} else {
// The backend is taking control of the XML.
$this->_encoder->getStream()->add($results['raw_xml']);
}
return 'text/xml';
}
/**
* Noop. This class overrides the handle method.
*/
protected function _handle()
{
}
/**
* Build the appropriate response string to send back to the client.
*
* @param array $properties An array containing any needed properties.
* Required properties for mobile sync:
* - request_schema: The request schema sent by the client.
* - response_schema: The schema the client indicated it can accept.
* - culture: The culture value (normally 'en:en').
* - display_name: The user's configured display name.
* - email: The user's email address.
* - url: The url of the Microsoft-Servers-ActiveSync endpoint for this
* user to use.
*
* Properties used for Outlook schema:
* - imap: Array describing the IMAP server.
* - pop: Array describing the POP3 server.
* - smtp: Array describing the SMTP server.
*
* @return string The XML to return to the client.
*/
protected function _buildResponseString($properties)
{
// Default response is for mobilesync.
if (empty($properties['request_schema']) ||
stripos($properties['request_schema'], 'autodiscover/mobilesync') !== false) {
return '<?xml version="1.0" encoding="utf-8"?>
<Autodiscover xmlns="http://schemas.microsoft.com/exchange/autodiscover/responseschema/2006">
<Response xmlns="http://schemas.microsoft.com/exchange/autodiscover/mobilesync/responseschema/2006">
<Culture>' . $properties['culture'] . '</Culture>
<User>
<DisplayName>' . $properties['display_name'] . '</DisplayName>
<EMailAddress>' . $properties['email'] . '</EMailAddress>
</User>
<Action>
<Settings>
<Server>
<Type>MobileSync</Type>
<Url>' . $properties['url'] . '</Url>
<Name>' . $properties['url'] . '</Name>
</Server>
</Settings>
</Action>
</Response>
</Autodiscover>';
} elseif (stripos($properties['request_schema'], 'autodiscover/outlook') !== false) {
if (empty($properties['response_schema'])) {
// Missing required response_schema
return $this->_buildFailureResponse($properties['email'], '600', 'http://schemas.microsoft.com/exchange/autodiscover/outlook/responseschema/2006a');
}
$xml = '<Autodiscover xmlns="http://schemas.microsoft.com/exchange/autodiscover/responseschema/2006">
<Response xmlns="' . $properties['response_schema'] . '">
<User>
<DisplayName>' . $properties['display_name'] . '</DisplayName>
</User>
<Account>
<AccountType>email</AccountType>
<Action>settings</Action>';
if (!empty($properties['imap'])) {
$xml .= '<Protocol>
<Type>IMAP</Type>
<Server>' . $properties['imap']['host'] . '</Server>
<Port>' . $properties['imap']['port'] . '</Port>
<LoginName>' . $properties['username'] . '</LoginName>
<DomainRequired>off</DomainRequired>
<SPA>off</SPA>
<SSL>' . ($properties['imap']['ssl'] ? 'on' : 'off') . '</SSL>
<AuthRequired>on</AuthRequired>
</Protocol>';
}
if (!empty($properties['pop'])) {
$xml .= '<Protocol>
<Type>POP3</Type>
<Server>' . $properties['pop']['host'] . '</Server>
<Port>' . $properties['pop']['port'] . '</Port>
<LoginName>' . $properties['username'] . '</LoginName>
<DomainRequired>off</DomainRequired>
<SPA>off</SPA>
<SSL>' . ($properties['pop']['ssl'] ? 'on' : 'off') . '</SSL>
<AuthRequired>on</AuthRequired>
</Protocol>';
}
if (!empty($properties['smtp'])) {
$xml .= '<Protocol>
<Type>SMTP</Type>
<Server>' . $properties['smtp']['host'] . '</Server>
<Port>' . $properties['smtp']['port'] . '</Port>
<LoginName>' . $properties['username'] . '</LoginName>
<DomainRequired>off</DomainRequired>
<SPA>off</SPA>
<SSL>' . ($properties['smtp']['ssl'] ? 'on' : 'off') . '</SSL>
<AuthRequired>on</AuthRequired>
<UsePOPAuth>' . ($properties['smtp']['popauth'] ? 'on' : 'off') . '</UsePOPAuth>
</Protocol>';
}
$xml .= '</Account>
</Response>
</Autodiscover>';
return $xml;
} else {
// Unknown request.
return $this->_buildFailureResponse($properties['email'], '600', $properties['response_schema']);
}
}
/**
* Output failure response code.
*
* @param string $email The email of the user attempting Autodiscover.
* @param string $status An appropriate status code for the error. E.g.,
* 600 - Invalid response.
* 601 - Provider not found for requested schema.
* @param string $response_schema The response schema value.
*
* @return string The XML to send to the client.
*/
protected function _buildFailureResponse($email, $status, $response_schema)
{
return '<?xml version="1.0" encoding="utf-8"?>
<Autodiscover xmlns="http://schemas.microsoft.com/exchange/autodiscover/responseschema/2006">
<Response xmlns="' . $response_schema . '">
<Culture>en:us</Culture>
<User>
<EMailAddress>' . $email . '</EMailAddress>
</User>
<Action>
<Error>
<Status>' . $status . '</Status>
<Message>Unable to autoconfigure the supplied email address.</Message>
<DebugData>MailUser</DebugData>
</Error>
</Action>
</Response>
</Autodiscover>';
}
}
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