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<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Server commands for our PHP implementation of the XML-RPC protocol
*
* This is a PEAR-ified version of Useful inc's XML-RPC for PHP.
* It has support for HTTP transport, proxies and authentication.
*
* PHP versions 4 and 5
*
* LICENSE: License is granted to use or modify this software
* ("XML-RPC for PHP") for commercial or non-commercial use provided the
* copyright of the author is preserved in any distributed or derivative work.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESSED OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* @category Web Services
* @package XML_RPC
* @author Edd Dumbill <edd@usefulinc.com>
* @author Stig Bakken <stig@php.net>
* @author Martin Jansen <mj@php.net>
* @author Daniel Convissor <danielc@php.net>
* @copyright 1999-2001 Edd Dumbill, 2001-2005 The PHP Group
* @version CVS: $Id: Server.php,v 1.29 2005/08/14 20:25:35 danielc Exp $
* @link http://pear.php.net/package/XML_RPC
*/
/**
* Pull in the XML_RPC class
*/
require_once 'XML/RPC.php';
/**
* signature for system.listMethods: return = array,
* parameters = a string or nothing
* @global array $GLOBALS['XML_RPC_Server_listMethods_sig']
*/
$GLOBALS['XML_RPC_Server_listMethods_sig'] = array(
array($GLOBALS['XML_RPC_Array'],
$GLOBALS['XML_RPC_String']
),
array($GLOBALS['XML_RPC_Array'])
);
/**
* docstring for system.listMethods
* @global string $GLOBALS['XML_RPC_Server_listMethods_doc']
*/
$GLOBALS['XML_RPC_Server_listMethods_doc'] = 'This method lists all the'
. ' methods that the XML-RPC server knows how to dispatch';
/**
* signature for system.methodSignature: return = array,
* parameters = string
* @global array $GLOBALS['XML_RPC_Server_methodSignature_sig']
*/
$GLOBALS['XML_RPC_Server_methodSignature_sig'] = array(
array($GLOBALS['XML_RPC_Array'],
$GLOBALS['XML_RPC_String']
)
);
/**
* docstring for system.methodSignature
* @global string $GLOBALS['XML_RPC_Server_methodSignature_doc']
*/
$GLOBALS['XML_RPC_Server_methodSignature_doc'] = 'Returns an array of known'
. ' signatures (an array of arrays) for the method name passed. If'
. ' no signatures are known, returns a none-array (test for type !='
. ' array to detect missing signature)';
/**
* signature for system.methodHelp: return = string,
* parameters = string
* @global array $GLOBALS['XML_RPC_Server_methodHelp_sig']
*/
$GLOBALS['XML_RPC_Server_methodHelp_sig'] = array(
array($GLOBALS['XML_RPC_String'],
$GLOBALS['XML_RPC_String']
)
);
/**
* docstring for methodHelp
* @global string $GLOBALS['XML_RPC_Server_methodHelp_doc']
*/
$GLOBALS['XML_RPC_Server_methodHelp_doc'] = 'Returns help text if defined'
. ' for the method passed, otherwise returns an empty string';
/**
* dispatch map for the automatically declared XML-RPC methods.
* @global array $GLOBALS['XML_RPC_Server_dmap']
*/
$GLOBALS['XML_RPC_Server_dmap'] = array(
'system.listMethods' => array(
'function' => 'XML_RPC_Server_listMethods',
'signature' => $GLOBALS['XML_RPC_Server_listMethods_sig'],
'docstring' => $GLOBALS['XML_RPC_Server_listMethods_doc']
),
'system.methodHelp' => array(
'function' => 'XML_RPC_Server_methodHelp',
'signature' => $GLOBALS['XML_RPC_Server_methodHelp_sig'],
'docstring' => $GLOBALS['XML_RPC_Server_methodHelp_doc']
),
'system.methodSignature' => array(
'function' => 'XML_RPC_Server_methodSignature',
'signature' => $GLOBALS['XML_RPC_Server_methodSignature_sig'],
'docstring' => $GLOBALS['XML_RPC_Server_methodSignature_doc']
)
);
/**
* @global string $GLOBALS['XML_RPC_Server_debuginfo']
*/
$GLOBALS['XML_RPC_Server_debuginfo'] = '';
/**
* Lists all the methods that the XML-RPC server knows how to dispatch
*
* @return object a new XML_RPC_Response object
*/
function XML_RPC_Server_listMethods($server, $m)
{
global $XML_RPC_err, $XML_RPC_str, $XML_RPC_Server_dmap;
$v = new XML_RPC_Value();
$outAr = array();
foreach ($server->dmap as $key => $val) {
$outAr[] = new XML_RPC_Value($key, 'string');
}
foreach ($XML_RPC_Server_dmap as $key => $val) {
$outAr[] = new XML_RPC_Value($key, 'string');
}
$v->addArray($outAr);
return new XML_RPC_Response($v);
}
/**
* Returns an array of known signatures (an array of arrays)
* for the given method
*
* If no signatures are known, returns a none-array
* (test for type != array to detect missing signature)
*
* @return object a new XML_RPC_Response object
*/
function XML_RPC_Server_methodSignature($server, $m)
{
global $XML_RPC_err, $XML_RPC_str, $XML_RPC_Server_dmap;
$methName = $m->getParam(0);
$methName = $methName->scalarval();
if (strpos($methName, 'system.') === 0) {
$dmap = $XML_RPC_Server_dmap;
$sysCall = 1;
} else {
$dmap = $server->dmap;
$sysCall = 0;
}
// print "<!-- ${methName} -->\n";
if (isset($dmap[$methName])) {
if ($dmap[$methName]['signature']) {
$sigs = array();
$thesigs = $dmap[$methName]['signature'];
for ($i = 0; $i < sizeof($thesigs); $i++) {
$cursig = array();
$inSig = $thesigs[$i];
for ($j = 0; $j < sizeof($inSig); $j++) {
$cursig[] = new XML_RPC_Value($inSig[$j], 'string');
}
$sigs[] = new XML_RPC_Value($cursig, 'array');
}
$r = new XML_RPC_Response(new XML_RPC_Value($sigs, 'array'));
} else {
$r = new XML_RPC_Response(new XML_RPC_Value('undef', 'string'));
}
} else {
$r = new XML_RPC_Response(0, $XML_RPC_err['introspect_unknown'],
$XML_RPC_str['introspect_unknown']);
}
return $r;
}
/**
* Returns help text if defined for the method passed, otherwise returns
* an empty string
*
* @return object a new XML_RPC_Response object
*/
function XML_RPC_Server_methodHelp($server, $m)
{
global $XML_RPC_err, $XML_RPC_str, $XML_RPC_Server_dmap;
$methName = $m->getParam(0);
$methName = $methName->scalarval();
if (strpos($methName, 'system.') === 0) {
$dmap = $XML_RPC_Server_dmap;
$sysCall = 1;
} else {
$dmap = $server->dmap;
$sysCall = 0;
}
if (isset($dmap[$methName])) {
if ($dmap[$methName]['docstring']) {
$r = new XML_RPC_Response(new XML_RPC_Value($dmap[$methName]['docstring']),
'string');
} else {
$r = new XML_RPC_Response(new XML_RPC_Value('', 'string'));
}
} else {
$r = new XML_RPC_Response(0, $XML_RPC_err['introspect_unknown'],
$XML_RPC_str['introspect_unknown']);
}
return $r;
}
/**
* @return void
*/
function XML_RPC_Server_debugmsg($m)
{
global $XML_RPC_Server_debuginfo;
$XML_RPC_Server_debuginfo = $XML_RPC_Server_debuginfo . $m . "\n";
}
/**
* A server for receiving and replying to XML RPC requests
*
* <code>
* $server = new XML_RPC_Server(
* array(
* 'isan8' =>
* array(
* 'function' => 'is_8',
* 'signature' =>
* array(
* array('boolean', 'int'),
* array('boolean', 'int', 'boolean'),
* array('boolean', 'string'),
* array('boolean', 'string', 'boolean'),
* ),
* 'docstring' => 'Is the value an 8?'
* ),
* ),
* 1,
* 0
* );
* </code>
*
* @category Web Services
* @package XML_RPC
* @author Edd Dumbill <edd@usefulinc.com>
* @author Stig Bakken <stig@php.net>
* @author Martin Jansen <mj@php.net>
* @author Daniel Convissor <danielc@php.net>
* @copyright 1999-2001 Edd Dumbill, 2001-2005 The PHP Group
* @version Release: 1.4.0
* @link http://pear.php.net/package/XML_RPC
*/
class XML_RPC_Server
{
/**
* The dispatch map, listing the methods this server provides.
* @var array
*/
var $dmap = array();
/**
* The present response's encoding
* @var string
* @see XML_RPC_Message::getEncoding()
*/
var $encoding = '';
/**
* Debug mode (0 = off, 1 = on)
* @var integer
*/
var $debug = 0;
/**
* The response's HTTP headers
* @var string
*/
var $server_headers = '';
/**
* The response's XML payload
* @var string
*/
var $server_payload = '';
/**
* Constructor for the XML_RPC_Server class
*
* @param array $dispMap the dispatch map. An associative array
* explaining each function. The keys of the main
* array are the procedure names used by the
* clients. The value is another associative array
* that contains up to three elements:
* + The 'function' element's value is the name
* of the function or method that gets called.
* To define a class' method: 'class::method'.
* + The 'signature' element (optional) is an
* array describing the return values and
* parameters
* + The 'docstring' element (optional) is a
* string describing what the method does
* @param int $serviceNow should the HTTP response be sent now?
* (1 = yes, 0 = no)
* @param int $debug should debug output be displayed?
* (1 = yes, 0 = no)
*
* @return void
*/
function XML_RPC_Server($dispMap, $serviceNow = 1, $debug = 0)
{
global $HTTP_RAW_POST_DATA;
if ($debug) {
$this->debug = 1;
} else {
$this->debug = 0;
}
$this->dmap = $dispMap;
if ($serviceNow) {
$this->service();
} else {
$this->createServerPayload();
$this->createServerHeaders();
}
}
/**
* @return string the debug information if debug debug mode is on
*/
function serializeDebug()
{
global $XML_RPC_Server_debuginfo, $HTTP_RAW_POST_DATA;
if ($this->debug) {
XML_RPC_Server_debugmsg('vvv POST DATA RECEIVED BY SERVER vvv' . "\n"
. $HTTP_RAW_POST_DATA
. "\n" . '^^^ END POST DATA ^^^');
}
if ($XML_RPC_Server_debuginfo != '') {
return "<!-- PEAR XML_RPC SERVER DEBUG INFO:\n\n"
. preg_replace('/-(?=-)/', '- ', $XML_RPC_Server_debuginfo)
. "-->\n";
} else {
return '';
}
}
/**
* Sends the response
*
* The encoding and content-type are determined by
* XML_RPC_Message::getEncoding()
*
* @return void
*
* @uses XML_RPC_Server::createServerPayload(),
* XML_RPC_Server::createServerHeaders()
*/
function service()
{
if (!$this->server_payload) {
$this->createServerPayload();
}
if (!$this->server_headers) {
$this->createServerHeaders();
}
header($this->server_headers);
print $this->server_payload;
}
/**
* Generates the payload and puts it in the $server_payload property
*
* @return void
*
* @uses XML_RPC_Server::parseRequest(), XML_RPC_Server::$encoding,
* XML_RPC_Response::serialize(), XML_RPC_Server::serializeDebug()
*/
function createServerPayload()
{
$r = $this->parseRequest();
$this->server_payload = '<?xml version="1.0" encoding="'
. $this->encoding . '"?>' . "\n"
. $this->serializeDebug()
. $r->serialize();
}
/**
* Determines the HTTP headers and puts them in the $server_headers
* property
*
* @return boolean TRUE if okay, FALSE if $server_payload isn't set.
*
* @uses XML_RPC_Server::createServerPayload(),
* XML_RPC_Server::$server_headers
*/
function createServerHeaders()
{
if (!$this->server_payload) {
return false;
}
$this->server_headers = 'Content-Length: '
. strlen($this->server_payload) . "\r\n"
. 'Content-Type: text/xml;'
. ' charset=' . $this->encoding;
return true;
}
/**
* @return array
*/
function verifySignature($in, $sig)
{
for ($i = 0; $i < sizeof($sig); $i++) {
// check each possible signature in turn
$cursig = $sig[$i];
if (sizeof($cursig) == $in->getNumParams() + 1) {
$itsOK = 1;
for ($n = 0; $n < $in->getNumParams(); $n++) {
$p = $in->getParam($n);
// print "<!-- $p -->\n";
if ($p->kindOf() == 'scalar') {
$pt = $p->scalartyp();
} else {
$pt = $p->kindOf();
}
// $n+1 as first type of sig is return type
if ($pt != $cursig[$n+1]) {
$itsOK = 0;
$pno = $n+1;
$wanted = $cursig[$n+1];
$got = $pt;
break;
}
}
if ($itsOK) {
return array(1);
}
}
}
if (isset($wanted)) {
return array(0, "Wanted ${wanted}, got ${got} at param ${pno}");
} else {
$allowed = array();
foreach ($sig as $val) {
end($val);
$allowed[] = key($val);
}
$allowed = array_unique($allowed);
$last = count($allowed) - 1;
if ($last > 0) {
$allowed[$last] = 'or ' . $allowed[$last];
}
return array(0,
'Signature permits ' . implode(', ', $allowed)
. ' parameters but the request had '
. $in->getNumParams());
}
}
/**
* @return object a new XML_RPC_Response object
*
* @uses XML_RPC_Message::getEncoding(), XML_RPC_Server::$encoding
*/
function parseRequest($data = '')
{
global $XML_RPC_xh, $HTTP_RAW_POST_DATA,
$XML_RPC_err, $XML_RPC_str, $XML_RPC_errxml,
$XML_RPC_defencoding, $XML_RPC_Server_dmap;
if ($data == '') {
$data = $HTTP_RAW_POST_DATA;
}
$this->encoding = XML_RPC_Message::getEncoding($data);
$parser_resource = xml_parser_create($this->encoding);
$parser = (int) $parser_resource;
$XML_RPC_xh[$parser] = array();
$XML_RPC_xh[$parser]['cm'] = 0;
$XML_RPC_xh[$parser]['isf'] = 0;
$XML_RPC_xh[$parser]['params'] = array();
$XML_RPC_xh[$parser]['method'] = '';
$XML_RPC_xh[$parser]['stack'] = array();
$XML_RPC_xh[$parser]['valuestack'] = array();
$plist = '';
// decompose incoming XML into request structure
xml_parser_set_option($parser_resource, XML_OPTION_CASE_FOLDING, true);
xml_set_element_handler($parser_resource, 'XML_RPC_se', 'XML_RPC_ee');
xml_set_character_data_handler($parser_resource, 'XML_RPC_cd');
if (!xml_parse($parser_resource, $data, 1)) {
// return XML error as a faultCode
$r = new XML_RPC_Response(0,
$XML_RPC_errxml+xml_get_error_code($parser_resource),
sprintf('XML error: %s at line %d',
xml_error_string(xml_get_error_code($parser_resource)),
xml_get_current_line_number($parser_resource)));
xml_parser_free($parser_resource);
} elseif ($XML_RPC_xh[$parser]['isf']>1) {
$r = new XML_RPC_Response(0,
$XML_RPC_err['invalid_request'],
$XML_RPC_str['invalid_request']
. ': '
. $XML_RPC_xh[$parser]['isf_reason']);
xml_parser_free($parser_resource);
} else {
xml_parser_free($parser_resource);
$m = new XML_RPC_Message($XML_RPC_xh[$parser]['method']);
// now add parameters in
for ($i = 0; $i < sizeof($XML_RPC_xh[$parser]['params']); $i++) {
// print '<!-- ' . $XML_RPC_xh[$parser]['params'][$i]. "-->\n";
$plist .= "$i - " . var_export($XML_RPC_xh[$parser]['params'][$i], true) . " \n";
$m->addParam($XML_RPC_xh[$parser]['params'][$i]);
}
XML_RPC_Server_debugmsg($plist);
// now to deal with the method
$methName = $XML_RPC_xh[$parser]['method'];
if (strpos($methName, 'system.') === 0) {
$dmap = $XML_RPC_Server_dmap;
$sysCall = 1;
} else {
$dmap = $this->dmap;
$sysCall = 0;
}
if (isset($dmap[$methName]['function'])
&& is_string($dmap[$methName]['function'])
&& strpos($dmap[$methName]['function'], '::') !== false)
{
$dmap[$methName]['function'] =
explode('::', $dmap[$methName]['function']);
}
if (isset($dmap[$methName]['function'])
&& is_callable($dmap[$methName]['function']))
{
// dispatch if exists
if (isset($dmap[$methName]['signature'])) {
$sr = $this->verifySignature($m,
$dmap[$methName]['signature'] );
}
if (!isset($dmap[$methName]['signature']) || $sr[0]) {
// if no signature or correct signature
if ($sysCall) {
$r = call_user_func($dmap[$methName]['function'], $this, $m);
} else {
$r = call_user_func($dmap[$methName]['function'], $m);
}
if (!is_a($r, 'XML_RPC_Response')) {
$r = new XML_RPC_Response(0, $XML_RPC_err['not_response_object'],
$XML_RPC_str['not_response_object']);
}
} else {
$r = new XML_RPC_Response(0, $XML_RPC_err['incorrect_params'],
$XML_RPC_str['incorrect_params']
. ': ' . $sr[1]);
}
} else {
// else prepare error response
$r = new XML_RPC_Response(0, $XML_RPC_err['unknown_method'],
$XML_RPC_str['unknown_method']);
}
}
return $r;
}
/**
* Echos back the input packet as a string value
*
* @return void
*
* Useful for debugging.
*/
function echoInput()
{
global $HTTP_RAW_POST_DATA;
$r = new XML_RPC_Response(0);
$r->xv = new XML_RPC_Value("'Aha said I: '" . $HTTP_RAW_POST_DATA, 'string');
print $r->serialize();
}
}
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* c-hanging-comment-ender-p: nil
* End:
*/
?>
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