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<?php

namespace PhpXmlRpc;

use PhpXmlRpc\Helper\Charset;

use PhpXmlRpc\Helper\Http;

use PhpXmlRpc\Helper\Interop;

use PhpXmlRpc\Helper\XMLParser;

/**

 * Manages global configuration for operation of the library.

 */

class PhpXmlRpc

{

    /**

     * @var int[]

     */

    public static $xmlrpcerr = array(

        'unknown_method' => 1, // server

        /// @deprecated. left in for BC

        'invalid_return' => 2, // client

        'incorrect_params' => 3, // server

        'introspect_unknown' => 4, // server

        'http_error' => 5, // client

        'no_data' => 6, // client

        'no_ssl' => 7, // client

        'curl_fail' => 8, // client

        'invalid_request' => 15, // server

        'no_curl' => 16, // client

        'server_error' => 17, // server

        'multicall_error' => 18, // client

        'multicall_notstruct' => 9, // client

        'multicall_nomethod' => 10, // client

        'multicall_notstring' => 11, // client

        'multicall_recursion' => 12, // client

        'multicall_noparams' => 13, // client

        'multicall_notarray' => 14, // client

        'no_http2' => 19, // client

        'unsupported_option' => 20, // client

        // the following 3 are meant to give greater insight than 'invalid_return'. They use the same code for BC,

        // but you can override their value in your own code

        'invalid_xml' => 2, // client

        'xml_not_compliant' => 2, // client

        'xml_parsing_error' => 2, // client

        /// @todo verify: can these conflict with $xmlrpcerrxml?

        'cannot_decompress' => 103,

        'decompress_fail' => 104,

        'dechunk_fail' => 105,

        'server_cannot_decompress' => 106,

        'server_decompress_fail' => 107,

    );

    /**

     * @var string[]

     */

    public static $xmlrpcstr = array(

        'unknown_method' => 'Unknown method',

        /// @deprecated. left in for BC

        'invalid_return' => 'Invalid response payload (you can use the setDebug method to allow analysis of the response)',

        'incorrect_params' => 'Incorrect parameters passed to method',

        'introspect_unknown' => "Can't introspect: method unknown",

        'http_error' => "Didn't receive 200 OK from remote server",

        'no_data' => 'No data received from server',

        'no_ssl' => 'No SSL support compiled in',

        'curl_fail' => 'CURL error',

        'invalid_request' => 'Invalid request payload',

        'no_curl' => 'No CURL support compiled in',

        'server_error' => 'Internal server error',

        'multicall_error' => 'Received from server invalid multicall response',

        'multicall_notstruct' => 'system.multicall expected struct',

        'multicall_nomethod' => 'Missing methodName',

        'multicall_notstring' => 'methodName is not a string',

        'multicall_recursion' => 'Recursive system.multicall forbidden',

        'multicall_noparams' => 'Missing params',

        'multicall_notarray' => 'params is not an array',

        'no_http2' => 'No HTTP/2 support compiled in',

        'unsupported_option' => 'Some client option is not supported with the transport method currently in use',

        // the following 3 are meant to give greater insight than 'invalid_return'. They use the same string for BC,

        // but you can override their value in your own code

        'invalid_xml' => 'Invalid response payload (you can use the setDebug method to allow analysis of the response)',

        'xml_not_compliant' => 'Invalid response payload (you can use the setDebug method to allow analysis of the response)',

        'xml_parsing_error' => 'Invalid response payload (you can use the setDebug method to allow analysis of the response)',

        'cannot_decompress' => 'Received from server compressed HTTP and cannot decompress',

        'decompress_fail' => 'Received from server invalid compressed HTTP',

        'dechunk_fail' => 'Received from server invalid chunked HTTP',

        'server_cannot_decompress' => 'Received from client compressed HTTP request and cannot decompress',

        'server_decompress_fail' => 'Received from client invalid compressed HTTP request',

    );

    /**

     * @var string

     * The charset encoding used by the server for received requests and by the client for received responses when

     * received charset cannot be determined and mbstring extension is not enabled.

     */

    public static $xmlrpc_defencoding = "UTF-8";

    /**

     * @var string[]

     * The list of preferred encodings used by the server for requests and by the client for responses to detect the

     * charset of the received payload when

     * - the charset cannot be determined by looking at http headers, xml declaration or BOM

     * - mbstring extension is enabled

     */

    public static $xmlrpc_detectencodings = array();

    /**

     * @var string

     * The encoding used internally by PHP.

     * String values received as xml will be converted to this, and php strings will be converted to xml as if

     * having been coded with this.

     * Valid also when defining names of xml-rpc methods

     */

    public static $xmlrpc_internalencoding = "UTF-8";

    /**

     * @var string

     */

    public static $xmlrpcName = "XML-RPC for PHP";

    /**

     * @var string

     */

    public static $xmlrpcVersion = "4.10.1";

    /**

     * @var int

     * Let user errors start at 800

     */

    public static $xmlrpcerruser = 800;

    /**

     * @var int

     * Let XML parse errors start at 100

     */

    public static $xmlrpcerrxml = 100;

    /**

     * @var bool

     * Set to TRUE to enable correct decoding of <NIL/> and <EX:NIL/> values

     */

    public static $xmlrpc_null_extension = false;

    /**

     * @var bool

     * Set to TRUE to make the library use DateTime objects instead of strings for all values parsed from incoming XML.

     * NB: if the received strings are not parseable as dates, NULL will be returned. To prevent that, enable as

     * well `xmlrpc_reject_invalid_values`, so that invalid dates will be rejected by the library

     */

    public static $xmlrpc_return_datetimes = false;

    /**

     * @var bool

     * Set to TRUE to make the library reject incoming xml which uses invalid data for xml-rpc elements, such

     * as base64 strings which can not be decoded, dateTime strings which do not represent a valid date, invalid bools,

     * floats and integers, method names with forbidden characters, or struct members missing the value or name

     */

    public static $xmlrpc_reject_invalid_values = false;

    /**

     * @var bool

     * Set to TRUE to enable encoding of php NULL values to <EX:NIL/> instead of <NIL/>

     */

    public static $xmlrpc_null_apache_encoding = false;

    public static $xmlrpc_null_apache_encoding_ns = "http://ws.apache.org/xmlrpc/namespaces/extensions";

    /**

     * @var int

     * Number of decimal digits used to serialize Double values.

     * @todo rename :'-(

     */

    public static $xmlpc_double_precision = 128;

    /**

     * @var string

     * Used to validate received date values. Alter this if the server/client you are communicating with uses date

     * formats non-conformant with the spec

     * NB: the string should not match any data which php can not successfully use in a DateTime object constructor call

     * NB: atm, the Date helper uses this regexp and expects to find matches in a specific order

     */

    public static $xmlrpc_datetime_format = '/^([0-9]{4})(0[1-9]|1[012])(0[1-9]|[12][0-9]|3[01])T([01][0-9]|2[0-4]):([0-5][0-9]):([0-5][0-9]|60)$/';

    /**

     * @var string

     * Used to validate received integer values. Alter this if the server/client you are communicating with uses

     * formats non-conformant with the spec.

     * We keep in spaces for BC, even though they are forbidden by the spec.

     * NB: the string should not match any data which php can not successfully cast to an integer

     */

    public static $xmlrpc_int_format = '/^[ \t]*[+-]?[0-9]+[ \t]*$/';

    /**

     * @var string

     * Used to validate received double values. Alter this if the server/client you are communicating with uses

     * formats non-conformant with the spec, e.g. with leading/trailing spaces/tabs/newlines.

     * We keep in spaces for BC, even though they are forbidden by the spec.

     * NB: the string should not match any data which php can not successfully cast to a float

     */

    public static $xmlrpc_double_format = '/^[ \t]*[-+]?[0-9]*\.?[0-9]+([eE][-+]?[0-9]+)?[ \t]*$/';

    /**

     * @var string

     * Used to validate received methodname values.

     * According to the spec: "The string may only contain identifier characters, upper and lower-case A-Z, the numeric

     * characters, 0-9, underscore, dot, colon and slash".

     * We keep in leading and trailing spaces for BC, even though they are forbidden by the spec.

     * But what about "identifier characters"? Is that meant to be 'identifier characters: upper and lower-case A-Z, ...'

     * or something else? If the latter, there is no consensus across programming languages about what is a valid

     * identifier character. PHP has one of the most crazy definitions of what is a valid identifier character, allowing

     * _bytes_ in range x80-xff, without even specifying a character set (and then lowercasing anyway in some cases)...

     */

    public static $xmlrpc_methodname_format = '|^[ \t]*[a-zA-Z0-9_.:/]+[ \t]*$|';

    /**

     * @var bool

     * Set this to false to have a warning added to the log whenever user code uses a deprecated method/parameter/property

     */

    public static $xmlrpc_silence_deprecations = true;

    // *** BC layer ***

    /**

     * Inject a logger into all classes of the PhpXmlRpc library which use one

     *

     * @param $logger

     * @return void

     */

    public static function setLogger($logger)

    {

        Charset::setLogger($logger);

        Client::setLogger($logger);

        Encoder::setLogger($logger);

        Http::setLogger($logger);

        Request::setLogger($logger);

        Server::setLogger($logger);

        Value::setLogger($logger);

        Wrapper::setLogger($logger);

        XMLParser::setLogger($logger);

    }

    /**

     * Makes the library use the error codes detailed at https://xmlrpc-epi.sourceforge.net/specs/rfc.fault_codes.php

     *

     * @return void

     *

     * @tofo feature creep - allow switching back to the original set of codes; querying the current mode

     */

    public static function useInteropFaults()

    {

        self::$xmlrpcerr = Interop::$xmlrpcerr;

        self::$xmlrpcerruser = -Interop::$xmlrpcerruser;

    }

    /**

     * A function to be used for compatibility with legacy code: it creates all global variables which used to be declared,

     * such as library version etc...

     * @return void

     *

     * @deprecated

     */

    public static function exportGlobals()

    {

        $reflection = new \ReflectionClass('PhpXmlRpc\PhpXmlRpc');

        foreach ($reflection->getStaticProperties() as $name => $value) {

            if (!in_array($name, array('xmlrpc_return_datetimes', 'xmlrpc_reject_invalid_values', 'xmlrpc_datetime_format',

                'xmlrpc_int_format', 'xmlrpc_double_format', 'xmlrpc_methodname_format', 'xmlrpc_silence_deprecations'))) {

                $GLOBALS[$name] = $value;

            }

        }

        // NB: all the variables exported into the global namespace below here do NOT guarantee 100% compatibility,

        // as they are NOT reimported back during calls to importGlobals()

        $reflection = new \ReflectionClass('PhpXmlRpc\Value');

        foreach ($reflection->getStaticProperties() as $name => $value) {

            if (!in_array($name, array('logger', 'charsetEncoder'))) {

                $GLOBALS[$name] = $value;

            }

        }

        /// @todo mke it possible to inject the XMLParser and Charset, as we do in other classes

        $parser = new Helper\XMLParser();

        $GLOBALS['xmlrpc_valid_parents'] = $parser->xmlrpc_valid_parents;

        $charset = Charset::instance();

        $GLOBALS['xml_iso88591_Entities'] = $charset->getEntities('iso88591');

    }

    /**

     * A function to be used for compatibility with legacy code: it gets the values of all global variables which used

     * to be declared, such as library version etc... and sets them to php classes.

     * It should be used by code which changed the values of those global variables to alter the working of the library.

     * Example code:

     * 1. include xmlrpc.inc

     * 2. set the values, e.g. $GLOBALS['xmlrpc_internalencoding'] = 'UTF-8';

     * 3. import them: PhpXmlRpc\PhpXmlRpc::importGlobals();

     * 4. run your own code.

     *

     * @return void

     *

     * @deprecated

     *

     * @todo this function does not import back xmlrpc_valid_parents and xml_iso88591_Entities

     */

    public static function importGlobals()

    {

        $reflection = new \ReflectionClass('PhpXmlRpc\PhpXmlRpc');

        foreach ($reflection->getStaticProperties() as $name => $value) {

            if (!in_array($name, array('xmlrpc_return_datetimes', 'xmlrpc_reject_invalid_values', 'xmlrpc_datetime_format',

                'xmlrpc_int_format', 'xmlrpc_double_format', 'xmlrpc_methodname_format', 'xmlrpc_silence_deprecations')))

            {

                if (isset($GLOBALS[$name])) {

                    self::$$name = $GLOBALS[$name];

                }

            }

        }

    }

}