server.php

视频监控网络部分的协议ddns,的模块的实现代码,请大家大胆指正.

     *                          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]);
            }

            if ($this->debug) {
                XML_RPC_Server_debugmsg($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:
 */

?>