PhpXmlRpc\Server::parseRequestHeaders()

Complexity

Conditions	26
Paths	1320

Size

Total Lines	90
Code Lines	49

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	27
CRAP Score	64.9994

Importance

Changes	2
Bugs	0	Features	0

<?php
    protected function parseRequestHeaders(&$data, &$reqEncoding, &$respEncoding, &$respCompression)
    {
        // check if $_SERVER is populated: it might have been disabled via ini file
        // (this is true even when in CLI mode)
        if (count($_SERVER) == 0) {
            Logger::instance()->errorLog('XML-RPC: ' . __METHOD__ . ': cannot parse request headers as $_SERVER is not populated');
        }

        if ($this->debug > 1) {
            if (function_exists('getallheaders')) {
                $this->debugmsg(''); // empty line
                foreach (getallheaders() as $name => $val) {
                    $this->debugmsg("HEADER: $name: $val");
                }
            }
        }

        if (isset($_SERVER['HTTP_CONTENT_ENCODING'])) {
            $contentEncoding = str_replace('x-', '', $_SERVER['HTTP_CONTENT_ENCODING']);
        } else {
            $contentEncoding = '';
        }

        // check if request body has been compressed and decompress it
        if ($contentEncoding != '' && strlen($data)) {
            if ($contentEncoding == 'deflate' || $contentEncoding == 'gzip') {
                // if decoding works, use it. else assume data wasn't gzencoded
                if (function_exists('gzinflate') && in_array($contentEncoding, $this->accepted_compression)) {
                    if ($contentEncoding == 'deflate' && $degzdata = @gzuncompress($data)) {
                        $data = $degzdata;
                        if ($this->debug > 1) {
                            $this->debugmsg("\n+++INFLATED REQUEST+++[" . strlen($data) . " chars]+++\n" . $data . "\n+++END+++");
                        }
                    } elseif ($contentEncoding == 'gzip' && $degzdata = @gzinflate(substr($data, 10))) {
                        $data = $degzdata;
                        if ($this->debug > 1) {
                            $this->debugmsg("+++INFLATED REQUEST+++[" . strlen($data) . " chars]+++\n" . $data . "\n+++END+++");
                        }
                    } else {
                        $r = new Response(0, PhpXmlRpc::$xmlrpcerr['server_decompress_fail'], PhpXmlRpc::$xmlrpcstr['server_decompress_fail']);

                        return $r;
                    }
                } else {
                    $r = new Response(0, PhpXmlRpc::$xmlrpcerr['server_cannot_decompress'], PhpXmlRpc::$xmlrpcstr['server_cannot_decompress']);

                    return $r;
                }
            }
        }

        // check if client specified accepted charsets, and if we know how to fulfill
        // the request
        if ($this->response_charset_encoding == 'auto') {
            $respEncoding = '';
            if (isset($_SERVER['HTTP_ACCEPT_CHARSET'])) {
                // here we should check if we can match the client-requested encoding
                // with the encodings we know we can generate.
                /// @todo we should parse q=0.x preferences instead of getting first charset specified...
                $clientAcceptedCharsets = explode(',', strtoupper($_SERVER['HTTP_ACCEPT_CHARSET']));
                // Give preference to internal encoding
                $knownCharsets = array(PhpXmlRpc::$xmlrpc_internalencoding, 'UTF-8', 'ISO-8859-1', 'US-ASCII');
                foreach ($knownCharsets as $charset) {
                    foreach ($clientAcceptedCharsets as $accepted) {
                        if (strpos($accepted, $charset) === 0) {
                            $respEncoding = $charset;
                            break;
                        }
                    }
                    if ($respEncoding) {
                        break;
                    }
                }
            }
        } else {
            $respEncoding = $this->response_charset_encoding;
        }

        if (isset($_SERVER['HTTP_ACCEPT_ENCODING'])) {
            $respCompression = $_SERVER['HTTP_ACCEPT_ENCODING'];
        } else {
            $respCompression = '';
        }

        // 'guestimate' request encoding
        /// @todo check if mbstring is enabled and automagic input conversion is on: it might mingle with this check???
        $reqEncoding = XMLParser::guessEncoding(isset($_SERVER['CONTENT_TYPE']) ? $_SERVER['CONTENT_TYPE'] : '',
            $data);

        return null;
    }