727 lines
22 KiB
PHP
727 lines
22 KiB
PHP
<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Uri
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* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id: Http.php 14650 2009-04-05 03:15:38Z robinsk $
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*/
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/**
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* @see Zend_Uri
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*/
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require_once 'Zend/Uri.php';
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/**
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* @see Zend_Validate_Hostname
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*/
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require_once 'Zend/Validate/Hostname.php';
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/**
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* HTTP(S) URI handler
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*
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* @category Zend
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* @package Zend_Uri
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* @uses Zend_Uri
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* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_Uri_Http extends Zend_Uri
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{
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/**
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* Character classes for validation regular expressions
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*/
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const CHAR_ALNUM = 'A-Za-z0-9';
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const CHAR_MARK = '-_.!~*\'()\[\]';
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const CHAR_RESERVED = ';\/?:@&=+$,';
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const CHAR_SEGMENT = ':@&=+$,;';
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const CHAR_UNWISE = '{}|\\\\^`';
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/**
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* HTTP username
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*
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* @var string
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*/
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protected $_username = '';
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/**
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* HTTP password
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*
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* @var string
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*/
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protected $_password = '';
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/**
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* HTTP host
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*
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* @var string
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*/
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protected $_host = '';
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/**
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* HTTP post
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*
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* @var string
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*/
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protected $_port = '';
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/**
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* HTTP part
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*
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* @var string
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*/
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protected $_path = '';
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/**
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* HTTP query
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*
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* @var string
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*/
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protected $_query = '';
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/**
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* HTTP fragment
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*
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* @var string
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*/
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protected $_fragment = '';
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/**
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* Regular expression grammar rules for validation; values added by constructor
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*
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* @var array
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*/
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protected $_regex = array();
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/**
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* Constructor accepts a string $scheme (e.g., http, https) and a scheme-specific part of the URI
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* (e.g., example.com/path/to/resource?query=param#fragment)
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*
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* @param string $scheme The scheme of the URI
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* @param string $schemeSpecific The scheme-specific part of the URI
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* @throws Zend_Uri_Exception When the URI is not valid
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*/
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protected function __construct($scheme, $schemeSpecific = '')
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{
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// Set the scheme
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$this->_scheme = $scheme;
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// Set up grammar rules for validation via regular expressions. These
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// are to be used with slash-delimited regular expression strings.
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// Escaped special characters (eg. '%25' for '%')
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$this->_regex['escaped'] = '%[[:xdigit:]]{2}';
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// Unreserved characters
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$this->_regex['unreserved'] = '[' . self::CHAR_ALNUM . self::CHAR_MARK . ']';
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// Segment can use escaped, unreserved or a set of additional chars
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$this->_regex['segment'] = '(?:' . $this->_regex['escaped'] . '|[' .
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self::CHAR_ALNUM . self::CHAR_MARK . self::CHAR_SEGMENT . '])*';
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// Path can be a series of segmets char strings seperated by '/'
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$this->_regex['path'] = '(?:\/(?:' . $this->_regex['segment'] . ')?)+';
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// URI characters can be escaped, alphanumeric, mark or reserved chars
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$this->_regex['uric'] = '(?:' . $this->_regex['escaped'] . '|[' .
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self::CHAR_ALNUM . self::CHAR_MARK . self::CHAR_RESERVED .
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// If unwise chars are allowed, add them to the URI chars class
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(self::$_config['allow_unwise'] ? self::CHAR_UNWISE : '') . '])';
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// If no scheme-specific part was supplied, the user intends to create
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// a new URI with this object. No further parsing is required.
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if (strlen($schemeSpecific) === 0) {
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return;
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}
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// Parse the scheme-specific URI parts into the instance variables.
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$this->_parseUri($schemeSpecific);
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// Validate the URI
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if ($this->valid() === false) {
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require_once 'Zend/Uri/Exception.php';
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throw new Zend_Uri_Exception('Invalid URI supplied');
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}
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}
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/**
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* Creates a Zend_Uri_Http from the given string
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*
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* @param string $uri String to create URI from, must start with
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* 'http://' or 'https://'
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* @throws InvalidArgumentException When the given $uri is not a string or
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* does not start with http:// or https://
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* @throws Zend_Uri_Exception When the given $uri is invalid
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* @return Zend_Uri_Http
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*/
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public static function fromString($uri)
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{
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if (is_string($uri) === false) {
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require_once 'Zend/Uri/Exception.php';
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throw new Zend_Uri_Exception('$uri is not a string');
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}
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$uri = explode(':', $uri, 2);
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$scheme = strtolower($uri[0]);
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$schemeSpecific = isset($uri[1]) === true ? $uri[1] : '';
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if (in_array($scheme, array('http', 'https')) === false) {
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require_once 'Zend/Uri/Exception.php';
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throw new Zend_Uri_Exception("Invalid scheme: '$scheme'");
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}
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$schemeHandler = new Zend_Uri_Http($scheme, $schemeSpecific);
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return $schemeHandler;
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}
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/**
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* Parse the scheme-specific portion of the URI and place its parts into instance variables.
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*
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* @param string $schemeSpecific The scheme-specific portion to parse
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* @throws Zend_Uri_Exception When scheme-specific decoposition fails
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* @throws Zend_Uri_Exception When authority decomposition fails
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* @return void
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*/
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protected function _parseUri($schemeSpecific)
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{
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// High-level decomposition parser
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$pattern = '~^((//)([^/?#]*))([^?#]*)(\?([^#]*))?(#(.*))?$~';
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$status = @preg_match($pattern, $schemeSpecific, $matches);
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if ($status === false) {
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require_once 'Zend/Uri/Exception.php';
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throw new Zend_Uri_Exception('Internal error: scheme-specific decomposition failed');
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}
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// Failed decomposition; no further processing needed
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if ($status === false) {
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return;
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}
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// Save URI components that need no further decomposition
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$this->_path = isset($matches[4]) === true ? $matches[4] : '';
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$this->_query = isset($matches[6]) === true ? $matches[6] : '';
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$this->_fragment = isset($matches[8]) === true ? $matches[8] : '';
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// Additional decomposition to get username, password, host, and port
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$combo = isset($matches[3]) === true ? $matches[3] : '';
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$pattern = '~^(([^:@]*)(:([^@]*))?@)?([^:]+)(:(.*))?$~';
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$status = @preg_match($pattern, $combo, $matches);
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if ($status === false) {
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require_once 'Zend/Uri/Exception.php';
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throw new Zend_Uri_Exception('Internal error: authority decomposition failed');
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}
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// Failed decomposition; no further processing needed
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if ($status === false) {
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return;
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}
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// Save remaining URI components
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$this->_username = isset($matches[2]) === true ? $matches[2] : '';
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$this->_password = isset($matches[4]) === true ? $matches[4] : '';
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$this->_host = isset($matches[5]) === true ? $matches[5] : '';
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$this->_port = isset($matches[7]) === true ? $matches[7] : '';
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}
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/**
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* Returns a URI based on current values of the instance variables. If any
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* part of the URI does not pass validation, then an exception is thrown.
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*
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* @throws Zend_Uri_Exception When one or more parts of the URI are invalid
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* @return string
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*/
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public function getUri()
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{
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if ($this->valid() === false) {
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require_once 'Zend/Uri/Exception.php';
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throw new Zend_Uri_Exception('One or more parts of the URI are invalid');
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}
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$password = strlen($this->_password) > 0 ? ":$this->_password" : '';
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$auth = strlen($this->_username) > 0 ? "$this->_username$password@" : '';
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$port = strlen($this->_port) > 0 ? ":$this->_port" : '';
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$query = strlen($this->_query) > 0 ? "?$this->_query" : '';
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$fragment = strlen($this->_fragment) > 0 ? "#$this->_fragment" : '';
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return $this->_scheme
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. '://'
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. $auth
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. $this->_host
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. $port
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. $this->_path
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. $query
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. $fragment;
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}
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/**
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* Validate the current URI from the instance variables. Returns true if and only if all
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* parts pass validation.
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*
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* @return boolean
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*/
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public function valid()
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{
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// Return true if and only if all parts of the URI have passed validation
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return $this->validateUsername()
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and $this->validatePassword()
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and $this->validateHost()
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and $this->validatePort()
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and $this->validatePath()
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and $this->validateQuery()
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and $this->validateFragment();
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}
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/**
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* Returns the username portion of the URL, or FALSE if none.
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*
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* @return string
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*/
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public function getUsername()
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{
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return strlen($this->_username) > 0 ? $this->_username : false;
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}
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/**
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* Returns true if and only if the username passes validation. If no username is passed,
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* then the username contained in the instance variable is used.
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*
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* @param string $username The HTTP username
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* @throws Zend_Uri_Exception When username validation fails
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* @return boolean
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* @link http://www.faqs.org/rfcs/rfc2396.html
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*/
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public function validateUsername($username = null)
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{
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if ($username === null) {
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$username = $this->_username;
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}
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// If the username is empty, then it is considered valid
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if (strlen($username) === 0) {
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return true;
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}
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// Check the username against the allowed values
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$status = @preg_match('/^(?:' . $this->_regex['escaped'] . '|[' .
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self::CHAR_ALNUM . self::CHAR_MARK . ';:&=+$,' . '])+$/', $username);
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if ($status === false) {
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require_once 'Zend/Uri/Exception.php';
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throw new Zend_Uri_Exception('Internal error: username validation failed');
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}
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return $status === 1;
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}
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/**
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* Sets the username for the current URI, and returns the old username
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*
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* @param string $username The HTTP username
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* @throws Zend_Uri_Exception When $username is not a valid HTTP username
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* @return string
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*/
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public function setUsername($username)
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{
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if ($this->validateUsername($username) === false) {
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require_once 'Zend/Uri/Exception.php';
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throw new Zend_Uri_Exception("Username \"$username\" is not a valid HTTP username");
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}
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$oldUsername = $this->_username;
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$this->_username = $username;
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return $oldUsername;
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}
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/**
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* Returns the password portion of the URL, or FALSE if none.
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*
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* @return string
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*/
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public function getPassword()
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{
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return strlen($this->_password) > 0 ? $this->_password : false;
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}
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/**
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* Returns true if and only if the password passes validation. If no password is passed,
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* then the password contained in the instance variable is used.
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*
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* @param string $password The HTTP password
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* @throws Zend_Uri_Exception When password validation fails
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* @return boolean
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* @link http://www.faqs.org/rfcs/rfc2396.html
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*/
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public function validatePassword($password = null)
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{
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if ($password === null) {
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$password = $this->_password;
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}
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// If the password is empty, then it is considered valid
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if (strlen($password) === 0) {
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return true;
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}
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// If the password is nonempty, but there is no username, then it is considered invalid
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if (strlen($password) > 0 and strlen($this->_username) === 0) {
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return false;
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}
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// Check the password against the allowed values
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$status = @preg_match('/^(?:' . $this->_regex['escaped'] . '|[' .
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self::CHAR_ALNUM . self::CHAR_MARK . ';:&=+$,' . '])+$/', $password);
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if ($status === false) {
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require_once 'Zend/Uri/Exception.php';
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throw new Zend_Uri_Exception('Internal error: password validation failed.');
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}
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return $status == 1;
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}
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/**
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* Sets the password for the current URI, and returns the old password
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*
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* @param string $password The HTTP password
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* @throws Zend_Uri_Exception When $password is not a valid HTTP password
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* @return string
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*/
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public function setPassword($password)
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{
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if ($this->validatePassword($password) === false) {
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require_once 'Zend/Uri/Exception.php';
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throw new Zend_Uri_Exception("Password \"$password\" is not a valid HTTP password.");
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}
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$oldPassword = $this->_password;
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$this->_password = $password;
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return $oldPassword;
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}
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/**
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* Returns the domain or host IP portion of the URL, or FALSE if none.
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*
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* @return string
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*/
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public function getHost()
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{
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return strlen($this->_host) > 0 ? $this->_host : false;
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}
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/**
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* Returns true if and only if the host string passes validation. If no host is passed,
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* then the host contained in the instance variable is used.
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*
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* @param string $host The HTTP host
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* @return boolean
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* @uses Zend_Filter
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*/
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public function validateHost($host = null)
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{
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if ($host === null) {
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$host = $this->_host;
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}
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// If the host is empty, then it is considered invalid
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if (strlen($host) === 0) {
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return false;
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}
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// Check the host against the allowed values; delegated to Zend_Filter.
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$validate = new Zend_Validate_Hostname(Zend_Validate_Hostname::ALLOW_ALL);
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return $validate->isValid($host);
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}
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/**
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* Sets the host for the current URI, and returns the old host
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*
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* @param string $host The HTTP host
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* @throws Zend_Uri_Exception When $host is nota valid HTTP host
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* @return string
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*/
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public function setHost($host)
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{
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if ($this->validateHost($host) === false) {
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require_once 'Zend/Uri/Exception.php';
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throw new Zend_Uri_Exception("Host \"$host\" is not a valid HTTP host");
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}
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$oldHost = $this->_host;
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$this->_host = $host;
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return $oldHost;
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}
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/**
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* Returns the TCP port, or FALSE if none.
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*
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* @return string
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*/
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public function getPort()
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{
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return strlen($this->_port) > 0 ? $this->_port : false;
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}
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/**
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* Returns true if and only if the TCP port string passes validation. If no port is passed,
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* then the port contained in the instance variable is used.
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*
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* @param string $port The HTTP port
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* @return boolean
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*/
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public function validatePort($port = null)
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{
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if ($port === null) {
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$port = $this->_port;
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}
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// If the port is empty, then it is considered valid
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if (strlen($port) === 0) {
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return true;
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}
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// Check the port against the allowed values
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return ctype_digit((string) $port) and 1 <= $port and $port <= 65535;
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}
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/**
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* Sets the port for the current URI, and returns the old port
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*
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* @param string $port The HTTP port
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* @throws Zend_Uri_Exception When $port is not a valid HTTP port
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* @return string
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*/
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public function setPort($port)
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{
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if ($this->validatePort($port) === false) {
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require_once 'Zend/Uri/Exception.php';
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throw new Zend_Uri_Exception("Port \"$port\" is not a valid HTTP port.");
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}
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$oldPort = $this->_port;
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$this->_port = $port;
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return $oldPort;
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}
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/**
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* Returns the path and filename portion of the URL, or FALSE if none.
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*
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* @return string
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*/
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public function getPath()
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{
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return strlen($this->_path) > 0 ? $this->_path : '/';
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}
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/**
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* Returns true if and only if the path string passes validation. If no path is passed,
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* then the path contained in the instance variable is used.
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*
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* @param string $path The HTTP path
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* @throws Zend_Uri_Exception When path validation fails
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* @return boolean
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*/
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public function validatePath($path = null)
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{
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if ($path === null) {
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$path = $this->_path;
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}
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// If the path is empty, then it is considered valid
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if (strlen($path) === 0) {
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return true;
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}
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// Determine whether the path is well-formed
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$pattern = '/^' . $this->_regex['path'] . '$/';
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$status = @preg_match($pattern, $path);
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if ($status === false) {
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require_once 'Zend/Uri/Exception.php';
|
|
throw new Zend_Uri_Exception('Internal error: path validation failed');
|
|
}
|
|
|
|
return (boolean) $status;
|
|
}
|
|
|
|
/**
|
|
* Sets the path for the current URI, and returns the old path
|
|
*
|
|
* @param string $path The HTTP path
|
|
* @throws Zend_Uri_Exception When $path is not a valid HTTP path
|
|
* @return string
|
|
*/
|
|
public function setPath($path)
|
|
{
|
|
if ($this->validatePath($path) === false) {
|
|
require_once 'Zend/Uri/Exception.php';
|
|
throw new Zend_Uri_Exception("Path \"$path\" is not a valid HTTP path");
|
|
}
|
|
|
|
$oldPath = $this->_path;
|
|
$this->_path = $path;
|
|
|
|
return $oldPath;
|
|
}
|
|
|
|
/**
|
|
* Returns the query portion of the URL (after ?), or FALSE if none.
|
|
*
|
|
* @return string
|
|
*/
|
|
public function getQuery()
|
|
{
|
|
return strlen($this->_query) > 0 ? $this->_query : false;
|
|
}
|
|
|
|
/**
|
|
* Returns true if and only if the query string passes validation. If no query is passed,
|
|
* then the query string contained in the instance variable is used.
|
|
*
|
|
* @param string $query The query to validate
|
|
* @throws Zend_Uri_Exception When query validation fails
|
|
* @return boolean
|
|
* @link http://www.faqs.org/rfcs/rfc2396.html
|
|
*/
|
|
public function validateQuery($query = null)
|
|
{
|
|
if ($query === null) {
|
|
$query = $this->_query;
|
|
}
|
|
|
|
// If query is empty, it is considered to be valid
|
|
if (strlen($query) === 0) {
|
|
return true;
|
|
}
|
|
|
|
// Determine whether the query is well-formed
|
|
$pattern = '/^' . $this->_regex['uric'] . '*$/';
|
|
$status = @preg_match($pattern, $query);
|
|
if ($status === false) {
|
|
require_once 'Zend/Uri/Exception.php';
|
|
throw new Zend_Uri_Exception('Internal error: query validation failed');
|
|
}
|
|
|
|
return $status == 1;
|
|
}
|
|
|
|
/**
|
|
* Set the query string for the current URI, and return the old query
|
|
* string This method accepts both strings and arrays.
|
|
*
|
|
* @param string|array $query The query string or array
|
|
* @throws Zend_Uri_Exception When $query is not a valid query string
|
|
* @return string Old query string
|
|
*/
|
|
public function setQuery($query)
|
|
{
|
|
$oldQuery = $this->_query;
|
|
|
|
// If query is empty, set an empty string
|
|
if (empty($query) === true) {
|
|
$this->_query = '';
|
|
return $oldQuery;
|
|
}
|
|
|
|
// If query is an array, make a string out of it
|
|
if (is_array($query) === true) {
|
|
$query = http_build_query($query, '', '&');
|
|
} else {
|
|
// If it is a string, make sure it is valid. If not parse and encode it
|
|
$query = (string) $query;
|
|
if ($this->validateQuery($query) === false) {
|
|
parse_str($query, $queryArray);
|
|
$query = http_build_query($queryArray, '', '&');
|
|
}
|
|
}
|
|
|
|
// Make sure the query is valid, and set it
|
|
if ($this->validateQuery($query) === false) {
|
|
require_once 'Zend/Uri/Exception.php';
|
|
throw new Zend_Uri_Exception("'$query' is not a valid query string");
|
|
}
|
|
|
|
$this->_query = $query;
|
|
|
|
return $oldQuery;
|
|
}
|
|
|
|
/**
|
|
* Returns the fragment portion of the URL (after #), or FALSE if none.
|
|
*
|
|
* @return string|false
|
|
*/
|
|
public function getFragment()
|
|
{
|
|
return strlen($this->_fragment) > 0 ? $this->_fragment : false;
|
|
}
|
|
|
|
/**
|
|
* Returns true if and only if the fragment passes validation. If no fragment is passed,
|
|
* then the fragment contained in the instance variable is used.
|
|
*
|
|
* @param string $fragment Fragment of an URI
|
|
* @throws Zend_Uri_Exception When fragment validation fails
|
|
* @return boolean
|
|
* @link http://www.faqs.org/rfcs/rfc2396.html
|
|
*/
|
|
public function validateFragment($fragment = null)
|
|
{
|
|
if ($fragment === null) {
|
|
$fragment = $this->_fragment;
|
|
}
|
|
|
|
// If fragment is empty, it is considered to be valid
|
|
if (strlen($fragment) === 0) {
|
|
return true;
|
|
}
|
|
|
|
// Determine whether the fragment is well-formed
|
|
$pattern = '/^' . $this->_regex['uric'] . '*$/';
|
|
$status = @preg_match($pattern, $fragment);
|
|
if ($status === false) {
|
|
require_once 'Zend/Uri/Exception.php';
|
|
throw new Zend_Uri_Exception('Internal error: fragment validation failed');
|
|
}
|
|
|
|
return (boolean) $status;
|
|
}
|
|
|
|
/**
|
|
* Sets the fragment for the current URI, and returns the old fragment
|
|
*
|
|
* @param string $fragment Fragment of the current URI
|
|
* @throws Zend_Uri_Exception When $fragment is not a valid HTTP fragment
|
|
* @return string
|
|
*/
|
|
public function setFragment($fragment)
|
|
{
|
|
if ($this->validateFragment($fragment) === false) {
|
|
require_once 'Zend/Uri/Exception.php';
|
|
throw new Zend_Uri_Exception("Fragment \"$fragment\" is not a valid HTTP fragment");
|
|
}
|
|
|
|
$oldFragment = $this->_fragment;
|
|
$this->_fragment = $fragment;
|
|
|
|
return $oldFragment;
|
|
}
|
|
}
|