<?php
/*
An XML-RPC implementation by Keith Devens, version 2.5f.
http://www.keithdevens.com/software/xmlrpc/

Release history available at:
http://www.keithdevens.com/software/xmlrpc/history/

This code is Open Source, released under terms similar to the Artistic License.
Read the license at http://www.keithdevens.com/software/license/

Note: this code requires version 4.1.0 or higher of PHP.
*/

function & XML_serialize(&$data$level 0$prior_key NULL){
    
#assumes a hash, keys are the variable names
    
$xml_serialized_string "";
    while(list(
$key$value) = each($data)){
        
$inline false;
        
$numeric_array false;
        
$attributes "";
        
#echo "My current key is '$key', called with prior key '$prior_key'<br>";
        
if(!strstr($key" attr")){ #if it's not an attribute
            
if(array_key_exists("$key attr"$data)){
                while(list(
$attr_name$attr_value) = each($data["$key attr"])){
                    
#echo "Found attribute $attribute_name with value $attribute_value<br>";
                    
$attr_value = &htmlspecialchars($attr_valueENT_QUOTES);
                    
$attributes .= " $attr_name=\"$attr_value\"";
                }
            }

            if(
is_numeric($key)){
                
#echo "My current key ($key) is numeric. My parent key is '$prior_key'<br>";
                
$key $prior_key;
            }else{
                
#you can't have numeric keys at two levels in a row, so this is ok
                #echo "Checking to see if a numeric key exists in data.";
                
if(is_array($value) and array_key_exists(0$value)){
                
#    echo " It does! Calling myself as a result of a numeric array.<br>";
                    
$numeric_array true;
                    
$xml_serialized_string .= XML_serialize($value$level$key);
                }
                
#echo "<br>";
            
}

            if(!
$numeric_array){
                
$xml_serialized_string .= str_repeat("\t"$level) . "<$key$attributes>";

                if(
is_array($value)){
                    
$xml_serialized_string .= "\r\n" XML_serialize($value$level+1);
                }else{
                    
$inline true;
                    
$xml_serialized_string .= htmlspecialchars($value);
                }

                
$xml_serialized_string .= (!$inline str_repeat("\t"$level) : "") . "</$key>\r\n";
            }
        }else{
            
#echo "Skipping attribute record for key $key<bR>";
        
}
    }
    if(
$level == 0){
        
$xml_serialized_string "<?xml version=\"1.0\" ?>\r\n" $xml_serialized_string;
        return 
$xml_serialized_string;
    }else{
        return 
$xml_serialized_string;
    }
}

class 
XML {
    var 
$parser#a reference to the XML parser
    
var $document#the entire XML structure built up so far
    
var $current#a pointer to the current item - what is this
    
var $parent#a pointer to the current parent - the parent will be an array
    
var $parents#an array of the most recent parent at each level

    
var $last_opened_tag;

    function 
XML($data=null){
        
$this->parser xml_parser_create();

        
xml_parser_set_option ($this->parserXML_OPTION_CASE_FOLDING0);
        
xml_set_object($this->parser, &$this);
        
xml_set_element_handler($this->parser"open""close");
        
xml_set_character_data_handler($this->parser"data");
#        register_shutdown_function(array(&$this, 'destruct'));
    
}

    function 
destruct(){
        
xml_parser_free($this->parser);
    }

    function 
parse($data){
        
$this->document = array();
        
$this->parent = &$this->document;
        
$this->parents = array();
        
$this->last_opened_tag NULL;
        
xml_parse($this->parser$data);
        return 
$this->document;
    }

    function 
open($parser$tag$attributes){
        
#echo "Opening tag $tag<br>\n";
        
$this->data "";
        
$this->last_opened_tag $tag#tag is a string
        
if(array_key_exists($tag$this->parent)){
            
#echo "There's already an instance of '$tag' at the current level ($level)<br>\n";
            
if(is_array($this->parent[$tag]) and array_key_exists(0$this->parent[$tag])){ #if the keys are numeric
                #need to make sure they're numeric (account for attributes)
                
$key count_numeric_items($this->parent[$tag]);
                
#echo "There are $key instances: the keys are numeric.<br>\n";
            
}else{
                
#echo "There is only one instance. Shifting everything around<br>\n";
                
$temp = &$this->parent[$tag];
                unset(
$this->parent[$tag]);
                
$this->parent[$tag][0] = &$temp;

                if(
array_key_exists("$tag attr"$this->parent)){
                    
#shift the attributes around too if they exist
                    
$temp = &$this->parent["$tag attr"];
                    unset(
$this->parent["$tag attr"]);
                    
$this->parent[$tag]["0 attr"] = &$temp;
                }
                
$key 1;
            }
            
$this->parent = &$this->parent[$tag];
        }else{
            
$key $tag;
        }
        if(
$attributes){
            
$this->parent["$key attr"] = $attributes;
        }

        
$this->parent[$key] = array();
        
$this->parent = &$this->parent[$key];
        
array_unshift($this->parents, &$this->parent);
    }

    function 
data($parser$data){
        
#echo "Data is '", htmlspecialchars($data), "'<br>\n";
        
if($this->last_opened_tag != NULL){
            
$this->data .= $data;
        }
    }

    function 
close($parser$tag){
        
#echo "Close tag $tag<br>\n";
        
if($this->last_opened_tag == $tag){
            
$this->parent $this->data;
            
$this->last_opened_tag NULL;
        }
        
array_shift($this->parents);
        
$this->parent = &$this->parents[0];
    }
}

function & 
XML_unserialize(&$xml){
    
$xml_parser = new XML();
    
$data = &$xml_parser->parse(&$xml);
    
$xml_parser->destruct();
    return 
$data;
}

function & 
XMLRPC_parse(&$request){
    if(
defined('XMLRPC_DEBUG') and XMLRPC_DEBUG){
        
XMLRPC_debug('XMLRPC_parse'"<p>Received the following raw request:</p>" XMLRPC_show($request'print_r'true));
    }
    
$data = &XML_unserialize(&$request);
    if(
defined('XMLRPC_DEBUG') and XMLRPC_DEBUG){
        
XMLRPC_debug('XMLRPC_parse'"<p>Returning the following parsed request:</p>" XMLRPC_show($data'print_r'true));
    }
    return 
$data;
}

function & 
XMLRPC_prepare($data$type NULL){
    if(
is_array($data)){
        
$num_elements count($data);
        if((
array_key_exists(0$data) or !$num_elements) and $type != 'struct'){ #it's an array
            
if(!$num_elements){ #if the array is empty
                
$returnvalue =  array('array' => array('data' => NULL));
            }else{
                
$returnvalue['array']['data']['value'] = array();
                
$temp = &$returnvalue['array']['data']['value'];
                
$count count_numeric_items($data);
                for(
$n=0$n<$count$n++){
                    
$type NULL;
                    if(
array_key_exists("$n type"$data)){
                        
$type $data["$n type"];
                    }
                    
$temp[$n] = XMLRPC_prepare(&$data[$n], $type);
                }
            }
        }else{ 
#it's a struct
            
if(!$num_elements){ #if the struct is empty
                
$returnvalue = array('struct' => NULL);
            }else{
                
$returnvalue['struct']['member'] = array();
                
$temp = &$returnvalue['struct']['member'];
                while(list(
$key$value) = each($data)){
                    if(
substr($key, -5) != ' type'){ #if it's not a type specifier
                        
$type NULL;
                        if(
array_key_exists("$key type"$data)){
                            
$type $data["$key type"];
                        }
                        
$temp[] = array('name' => $key'value' => XMLRPC_prepare(&$value$type));
                    }
                }
            }
        }
    }else{ 
#it's a scalar
        
if(!$type){
            if(
is_int($data)){
                
$returnvalue['int'] = $data;
                return 
$returnvalue;
            }elseif(
is_float($data)){
                
$returnvalue['double'] = $data;
                return 
$returnvalue;
            }elseif(
is_bool($data)){
                
$returnvalue['boolean'] = ($data 0);
                return 
$returnvalue;
            }elseif(
preg_match('/^\d{8}T\d{2}:\d{2}:\d{2}$/'$data$matches)){ #it's a date
                
$returnvalue['dateTime.iso8601'] = $data;
                return 
$returnvalue;
            }elseif(
is_string($data)){
                
$returnvalue['string'] = htmlspecialchars($data);
                return 
$returnvalue;
            }
        }else{
            
$returnvalue[$type] = htmlspecialchars($data);
        }
    }
    return 
$returnvalue;
}

function & 
XMLRPC_adjustValue(&$current_node){
    if(
is_array($current_node)){
        if(isset(
$current_node['array'])){
            if(!
is_array($current_node['array']['data'])){
                
#If there are no elements, return an empty array
                
return array();
            }else{
                
#echo "Getting rid of array -> data -> value<br>\n";
                
$temp = &$current_node['array']['data']['value'];
                if(
is_array($temp) and array_key_exists(0$temp)){
                    
$count count($temp);
                    for(
$n=0;$n<$count;$n++){
                        
$temp2[$n] = &XMLRPC_adjustValue(&$temp[$n]);
                    }
                    
$temp = &$temp2;
                }else{
                    
$temp2 = &XMLRPC_adjustValue(&$temp);
                    
$temp = array(&$temp2);
                    
#I do the temp assignment because it avoids copying,
                    # since I can put a reference in the array
                    #PHP's reference model is a bit silly, and I can't just say:
                    # $temp = array(&XMLRPC_adjustValue(&$temp));
                
}
            }
        }elseif(isset(
$current_node['struct'])){
            if(!
is_array($current_node['struct'])){
                
#If there are no members, return an empty array
                
return array();
            }else{
                
#echo "Getting rid of struct -> member<br>\n";
                
$temp = &$current_node['struct']['member'];
                if(
is_array($temp) and array_key_exists(0$temp)){
                    
$count count($temp);
                    for(
$n=0;$n<$count;$n++){
                        
#echo "Passing name {$temp[$n][name]}. Value is: " . show($temp[$n][value], var_dump, true) . "<br>\n";
                        
$temp2[$temp[$n]['name']] = &XMLRPC_adjustValue(&$temp[$n]['value']);
                        
#echo "adjustValue(): After assigning, the value is " . show($temp2[$temp[$n]['name']], var_dump, true) . "<br>\n";
                    
}
                }else{
                    
#echo "Passing name $temp[name]<br>\n";
                    
$temp2[$temp['name']] = &XMLRPC_adjustValue(&$temp['value']);
                }
                
$temp = &$temp2;
            }
        }else{
            
$types = array('string''int''i4''double''dateTime.iso8601''base64''boolean');
            
$fell_through true;
            foreach(
$types as $type){
                if(
array_key_exists($type$current_node)){
                    
#echo "Getting rid of '$type'<br>\n";
                    
$temp = &$current_node[$type];
                    
#echo "adjustValue(): The current node is set with a type of $type<br>\n";
                    
$fell_through false;
                    break;
                }
            }
            if(
$fell_through){
                
$type 'string';
                
#echo "Fell through! Type is $type<br>\n";
            
}
            switch (
$type){
                case 
'int': case 'i4'$temp = (int)$temp;    break;
                case 
'string':         $temp = (string)$temp; break;
                case 
'double':         $temp = (double)$temp; break;
                case 
'boolean':        $temp = (bool)$temp;   break;
            }
        }
    }else{
        
$temp = (string)$current_node;
    }
    return 
$temp;
}

function 
XMLRPC_getParams($request){
    if(!
is_array($request['methodCall']['params'])){
        
#If there are no parameters, return an empty array
        
return array();
    }else{
        
#echo "Getting rid of methodCall -> params -> param<br>\n";
        
$temp = &$request['methodCall']['params']['param'];
        if(
is_array($temp) and array_key_exists(0$temp)){
            
$count count($temp);
            for(
$n 0$n $count$n++){
                
#echo "Serializing parameter $n<br>";
                
$temp2[$n] = &XMLRPC_adjustValue(&$temp[$n]['value']);
            }
        }else{
            
$temp2[0] = &XMLRPC_adjustValue($temp['value']);
        }
        
$temp = &$temp2;
        return 
$temp;
    }
}

function 
XMLRPC_getMethodName($methodCall){
    
#returns the method name
    
return $methodCall['methodCall']['methodName'];
}

function 
XMLRPC_request($site$location$methodName$params NULL$user_agent NULL){
    
$site explode(':'$site);
    if(isset(
$site[1]) and is_numeric($site[1])){
        
$port $site[1];
    }else{
        
$port 80;
    }
    
$site $site[0];

    
$data["methodCall"]["methodName"] = $methodName;
    
$param_count count($params);
    if(!
$param_count){
        
$data["methodCall"]["params"] = NULL;
    }else{
        for(
$n 0$n<$param_count$n++){
            
$data["methodCall"]["params"]["param"][$n]["value"] = $params[$n];
        }
    }
    
$data XML_serialize($data);

    if(
defined('XMLRPC_DEBUG') and XMLRPC_DEBUG){
        
XMLRPC_debug('XMLRPC_request'"<p>Received the following parameter list to send:</p>" XMLRPC_show($params'print_r'true));
    }
    
$conn fsockopen ($site$port); #open the connection
    
if(!$conn){ #if the connection was not opened successfully
        
if(defined('XMLRPC_DEBUG') and XMLRPC_DEBUG){
            
XMLRPC_debug('XMLRPC_request'"<p>Connection failed: Couldn't make the connection to $site.</p>");
        }
        return array(
false, array('faultCode'=>10532'faultString'=>"Connection failed: Couldn't make the connection to $site."));
    }else{
        
$headers =
            
"POST $location HTTP/1.0\r\n" .
            
"Host: $site\r\n" .
            
"Connection: close\r\n" .
            (
$user_agent "User-Agent: $user_agent\r\n" '') .
            
"Content-Type: text/xml\r\n" .
            
"Content-Length: " strlen($data) . "\r\n\r\n";

        
fputs($conn"$headers");
        
fputs($conn$data);

        if(
defined('XMLRPC_DEBUG') and XMLRPC_DEBUG){
            
XMLRPC_debug('XMLRPC_request'"<p>Sent the following request:</p>\n\n" XMLRPC_show($headers $data'print_r'true));
        }

        
#socket_set_blocking ($conn, false);
        
$response "";
        while(!
feof($conn)){
            
$response .= fgets($conn1024);
        }
        
fclose($conn);

        
#strip headers off of response
        
$data XML_unserialize(substr($responsestrpos($response"\r\n\r\n")+4));

        if(
defined('XMLRPC_DEBUG') and XMLRPC_DEBUG){
            
XMLRPC_debug('XMLRPC_request'"<p>Received the following response:</p>\n\n" XMLRPC_show($response'print_r'true) . "<p>Which was serialized into the following data:</p>\n\n" XMLRPC_show($data'print_r'true));
        }
        if(isset(
$data['methodResponse']['fault'])){
            
$return =  array(falseXMLRPC_adjustValue(&$data['methodResponse']['fault']['value']));
            if(
defined('XMLRPC_DEBUG') and XMLRPC_DEBUG){
                
XMLRPC_debug('XMLRPC_request'"<p>Returning:</p>\n\n" XMLRPC_show($return'var_dump'true));
            }
            return 
$return;
        }else{
            
$return = array(trueXMLRPC_adjustValue(&$data['methodResponse']['params']['param']['value']));
            if(
defined('XMLRPC_DEBUG') and XMLRPC_DEBUG){
                
XMLRPC_debug('XMLRPC_request'"<p>Returning:</p>\n\n" XMLRPC_show($return'var_dump'true));
            }
            return 
$return;
        }
    }
}

function 
XMLRPC_response($return_value$server NULL){
    
$data["methodResponse"]["params"]["param"]["value"] = &$return_value;
    
$return XML_serialize(&$data);

    if(
defined('XMLRPC_DEBUG') and XMLRPC_DEBUG){
        
XMLRPC_debug('XMLRPC_response'"<p>Received the following data to return:</p>\n\n" XMLRPC_show($return_value'print_r'true));
    }

    
header("Connection: close");
    
header("Content-Length: " strlen($return));
    
header("Content-Type: text/xml");
    
header("Date: " date("r"));
    if(
$server){
        
header("Server: $server");
    }

    if(
defined('XMLRPC_DEBUG') and XMLRPC_DEBUG){
        
XMLRPC_debug('XMLRPC_response'"<p>Sent the following response:</p>\n\n" XMLRPC_show($return'print_r'true));
    }
    echo 
$return;
}

function 
XMLRPC_error($faultCode$faultString$server NULL){
    
$array["methodResponse"]["fault"]["value"]["struct"]["member"] = array();
    
$temp = &$array["methodResponse"]["fault"]["value"]["struct"]["member"];
    
$temp[0]["name"] = "faultCode";
    
$temp[0]["value"]["int"] = $faultCode;
    
$temp[1]["name"] = "faultString";
    
$temp[1]["value"]["string"] = $faultString;

    
$return XML_serialize($array);

    
header("Connection: close");
    
header("Content-Length: " strlen($return));
    
header("Content-Type: text/xml");
    
header("Date: " date("r"));
    if(
$server){
        
header("Server: $server");
    }
    if(
defined('XMLRPC_DEBUG') and XMLRPC_DEBUG){
        
XMLRPC_debug('XMLRPC_error'"<p>Sent the following error response:</p>\n\n" XMLRPC_show($return'print_r'true));
    }
    echo 
$return;
}

function 
XMLRPC_convert_timestamp_to_iso8601($timestamp){
    
#takes a unix timestamp and converts it to iso8601 required by XMLRPC
    #an example iso8601 datetime is "20010822T03:14:33"
    
return date("Ymd\TH:i:s"$timestamp);
}

function 
XMLRPC_convert_iso8601_to_timestamp($iso8601){
    return 
strtotime($iso8601);
}

function 
count_numeric_items(&$array){
    return 
is_array($array) ? count(array_filter(array_keys($array), 'is_numeric')) : 0;
}

function 
XMLRPC_debug($function_name$debug_message){
    
$GLOBALS['XMLRPC_DEBUG_INFO'][] = array($function_name$debug_message);
}

function 
XMLRPC_debug_print(){
    if(
$GLOBALS['XMLRPC_DEBUG_INFO']){
        echo 
"<table border=\"1\" width=\"100%\">\n";
        foreach(
$GLOBALS['XMLRPC_DEBUG_INFO'] as $debug){
            echo 
"<tr><th style=\"vertical-align: top\">$debug[0]</th><td>$debug[1]</td></tr>\n";
        }
        echo 
"</table>\n";
        unset(
$GLOBALS['XMLRPC_DEBUG_INFO']);
    }else{
        echo 
"<p>No debugging information available yet.</p>";
    }
}

function 
XMLRPC_show($data$func "print_r"$return_str false){
    
ob_start();
    
$func($data);
    
$output ob_get_contents();
    
ob_end_clean();
    if(
$return_str){
        return 
"<pre>" htmlspecialchars($output) . "</pre>\n";
    }else{
        echo 
"<pre>"htmlspecialchars($output), "</pre>\n";
    }
}

?>