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Edit File : ChannelFile.php \| Size : 49.65 KB
<?php /** * PEAR_ChannelFile, the channel handling class * * PHP versions 4 and 5 * * @category pear * @package PEAR * @author Greg Beaver <cellog@php.net> * @copyright 1997-2009 The Authors * @license http://opensource.org/licenses/bsd-license.php New BSD License * @link http://pear.php.net/package/PEAR * @since File available since Release 1.4.0a1 / /* * Needed for error handling / require_once 'PEAR/ErrorStack.php'; require_once 'PEAR/XMLParser.php'; require_once 'PEAR/Common.php'; /* * Error code if the channel.xml <channel> tag does not contain a valid version / define('PEAR_CHANNELFILE_ERROR_NO_VERSION', 1); /* * Error code if the channel.xml <channel> tag version is not supported (version 1.0 is the only supported version, * currently / define('PEAR_CHANNELFILE_ERROR_INVALID_VERSION', 2); /* * Error code if parsing is attempted with no xml extension / define('PEAR_CHANNELFILE_ERROR_NO_XML_EXT', 3); /* * Error code if creating the xml parser resource fails / define('PEAR_CHANNELFILE_ERROR_CANT_MAKE_PARSER', 4); /* * Error code used for all sax xml parsing errors / define('PEAR_CHANNELFILE_ERROR_PARSER_ERROR', 5); /#@+ Validation errors / /* * Error code when channel name is missing / define('PEAR_CHANNELFILE_ERROR_NO_NAME', 6); /* * Error code when channel name is invalid / define('PEAR_CHANNELFILE_ERROR_INVALID_NAME', 7); /* * Error code when channel summary is missing / define('PEAR_CHANNELFILE_ERROR_NO_SUMMARY', 8); /* * Error code when channel summary is multi-line / define('PEAR_CHANNELFILE_ERROR_MULTILINE_SUMMARY', 9); /* * Error code when channel server is missing for protocol / define('PEAR_CHANNELFILE_ERROR_NO_HOST', 10); /* * Error code when channel server is invalid for protocol / define('PEAR_CHANNELFILE_ERROR_INVALID_HOST', 11); /* * Error code when a mirror name is invalid / define('PEAR_CHANNELFILE_ERROR_INVALID_MIRROR', 21); /* * Error code when a mirror type is invalid / define('PEAR_CHANNELFILE_ERROR_INVALID_MIRRORTYPE', 22); /* * Error code when an attempt is made to generate xml, but the parsed content is invalid / define('PEAR_CHANNELFILE_ERROR_INVALID', 23); /* * Error code when an empty package name validate regex is passed in / define('PEAR_CHANNELFILE_ERROR_EMPTY_REGEX', 24); /* * Error code when a <function> tag has no version / define('PEAR_CHANNELFILE_ERROR_NO_FUNCTIONVERSION', 25); /* * Error code when a <function> tag has no name / define('PEAR_CHANNELFILE_ERROR_NO_FUNCTIONNAME', 26); /* * Error code when a <validatepackage> tag has no name / define('PEAR_CHANNELFILE_ERROR_NOVALIDATE_NAME', 27); /* * Error code when a <validatepackage> tag has no version attribute / define('PEAR_CHANNELFILE_ERROR_NOVALIDATE_VERSION', 28); /* * Error code when a mirror does not exist but is called for in one of the set* * methods. / define('PEAR_CHANNELFILE_ERROR_MIRROR_NOT_FOUND', 32); /* * Error code when a server port is not numeric / define('PEAR_CHANNELFILE_ERROR_INVALID_PORT', 33); /* * Error code when <static> contains no version attribute / define('PEAR_CHANNELFILE_ERROR_NO_STATICVERSION', 34); /* * Error code when <baseurl> contains no type attribute in a <rest> protocol definition / define('PEAR_CHANNELFILE_ERROR_NOBASEURLTYPE', 35); /* * Error code when a mirror is defined and the channel.xml represents the __uri pseudo-channel / define('PEAR_CHANNELFILE_URI_CANT_MIRROR', 36); /* * Error code when ssl attribute is present and is not "yes" / define('PEAR_CHANNELFILE_ERROR_INVALID_SSL', 37); /#@-/ /** * Mirror types allowed. Currently only internet servers are recognized. / $GLOBALS['_PEAR_CHANNELS_MIRROR_TYPES'] = array('server'); /* * The Channel handling class * * @category pear * @package PEAR * @author Greg Beaver <cellog@php.net> * @copyright 1997-2009 The Authors * @license http://opensource.org/licenses/bsd-license.php New BSD License * @version Release: 1.10.16 * @link http://pear.php.net/package/PEAR * @since Class available since Release 1.4.0a1 / class PEAR_ChannelFile { /* * @access private * @var PEAR_ErrorStack * @access private / var $_stack; /* * Supported channel.xml versions, for parsing * @var array * @access private / var $_supportedVersions = array('1.0'); /* * Parsed channel information * @var array * @access private / var $_channelInfo; /* * index into the subchannels array, used for parsing xml * @var int * @access private / var $_subchannelIndex; /* * index into the mirrors array, used for parsing xml * @var int * @access private / var $_mirrorIndex; /* * Flag used to determine the validity of parsed content * @var boolean * @access private / var $_isValid = false; function __construct() { $this->_stack = new PEAR_ErrorStack('PEAR_ChannelFile'); $this->_stack->setErrorMessageTemplate($this->_getErrorMessage()); $this->_isValid = false; } /* * @return array * @access protected / function _getErrorMessage() { return array( PEAR_CHANNELFILE_ERROR_INVALID_VERSION => 'While parsing channel.xml, an invalid version number "%version% was passed in, expecting one of %versions%', PEAR_CHANNELFILE_ERROR_NO_VERSION => 'No version number found in <channel> tag', PEAR_CHANNELFILE_ERROR_NO_XML_EXT => '%error%', PEAR_CHANNELFILE_ERROR_CANT_MAKE_PARSER => 'Unable to create XML parser', PEAR_CHANNELFILE_ERROR_PARSER_ERROR => '%error%', PEAR_CHANNELFILE_ERROR_NO_NAME => 'Missing channel name', PEAR_CHANNELFILE_ERROR_INVALID_NAME => 'Invalid channel %tag% "%name%"', PEAR_CHANNELFILE_ERROR_NO_SUMMARY => 'Missing channel summary', PEAR_CHANNELFILE_ERROR_MULTILINE_SUMMARY => 'Channel summary should be on one line, but is multi-line', PEAR_CHANNELFILE_ERROR_NO_HOST => 'Missing channel server for %type% server', PEAR_CHANNELFILE_ERROR_INVALID_HOST => 'Server name "%server%" is invalid for %type% server', PEAR_CHANNELFILE_ERROR_INVALID_MIRROR => 'Invalid mirror name "%name%", mirror type %type%', PEAR_CHANNELFILE_ERROR_INVALID_MIRRORTYPE => 'Invalid mirror type "%type%"', PEAR_CHANNELFILE_ERROR_INVALID => 'Cannot generate xml, contents are invalid', PEAR_CHANNELFILE_ERROR_EMPTY_REGEX => 'packagenameregex cannot be empty', PEAR_CHANNELFILE_ERROR_NO_FUNCTIONVERSION => '%parent% %protocol% function has no version', PEAR_CHANNELFILE_ERROR_NO_FUNCTIONNAME => '%parent% %protocol% function has no name', PEAR_CHANNELFILE_ERROR_NOBASEURLTYPE => '%parent% rest baseurl has no type', PEAR_CHANNELFILE_ERROR_NOVALIDATE_NAME => 'Validation package has no name in <validatepackage> tag', PEAR_CHANNELFILE_ERROR_NOVALIDATE_VERSION => 'Validation package "%package%" has no version', PEAR_CHANNELFILE_ERROR_MIRROR_NOT_FOUND => 'Mirror "%mirror%" does not exist', PEAR_CHANNELFILE_ERROR_INVALID_PORT => 'Port "%port%" must be numeric', PEAR_CHANNELFILE_ERROR_NO_STATICVERSION => '<static> tag must contain version attribute', PEAR_CHANNELFILE_URI_CANT_MIRROR => 'The __uri pseudo-channel cannot have mirrors', PEAR_CHANNELFILE_ERROR_INVALID_SSL => '%server% has invalid ssl attribute "%ssl%" can only be yes or not present', ); } /* * @param string contents of package.xml file * @return bool success of parsing / function fromXmlString($data) { if (preg_match('/<channel\s+version="([0-9]+\.[0-9]+)"/', $data, $channelversion)) { if (!in_array($channelversion[1], $this->_supportedVersions)) { $this->_stack->push(PEAR_CHANNELFILE_ERROR_INVALID_VERSION, 'error', array('version' => $channelversion[1])); return false; } $parser = new PEAR_XMLParser; $result = $parser->parse($data); if ($result !== true) { if ($result->getCode() == 1) { $this->_stack->push(PEAR_CHANNELFILE_ERROR_NO_XML_EXT, 'error', array('error' => $result->getMessage())); } else { $this->_stack->push(PEAR_CHANNELFILE_ERROR_CANT_MAKE_PARSER, 'error'); } return false; } $this->_channelInfo = $parser->getData(); return true; } else { $this->_stack->push(PEAR_CHANNELFILE_ERROR_NO_VERSION, 'error', array('xml' => $data)); return false; } } /* * @return array / function toArray() { if (!$this->_isValid && !$this->validate()) { return false; } return $this->_channelInfo; } /* * @param array * * @return PEAR_ChannelFile\|false false if invalid / public static function &fromArray( $data, $compatibility = false, $stackClass = 'PEAR_ErrorStack' ) { $a = new PEAR_ChannelFile($compatibility, $stackClass); $a->_fromArray($data); if (!$a->validate()) { $a = false; return $a; } return $a; } /* * Unlike {@link fromArray()} this does not do any validation * * @param array * * @return PEAR_ChannelFile / public static function &fromArrayWithErrors( $data, $compatibility = false, $stackClass = 'PEAR_ErrorStack' ) { $a = new PEAR_ChannelFile($compatibility, $stackClass); $a->_fromArray($data); return $a; } /* * @param array * @access private / function _fromArray($data) { $this->_channelInfo = $data; } /* * Wrapper to {@link PEAR_ErrorStack::getErrors()} * @param boolean determines whether to purge the error stack after retrieving * @return array / function getErrors($purge = false) { return $this->_stack->getErrors($purge); } /* * Unindent given string (?) * * @param string $str The string that has to be unindented. * @return string * @access private / function _unIndent($str) { // remove leading newlines $str = preg_replace('/^[\r\n]+/', '', $str); // find whitespace at the beginning of the first line $indent_len = strspn($str, " \t"); $indent = substr($str, 0, $indent_len); $data = ''; // remove the same amount of whitespace from following lines foreach (explode("\n", $str) as $line) { if (substr($line, 0, $indent_len) == $indent) { $data .= substr($line, $indent_len) . "\n"; } } return $data; } /* * Parse a channel.xml file. Expects the name of * a channel xml file as input. * * @param string $descfile name of channel xml file * @return bool success of parsing / function fromXmlFile($descfile) { if (!file_exists($descfile) \|\| !is_file($descfile) \|\| !is_readable($descfile) \|\| (!$fp = fopen($descfile, 'r'))) { require_once 'PEAR.php'; return PEAR::raiseError("Unable to open $descfile"); } // read the whole thing so we only get one cdata callback // for each block of cdata fclose($fp); $data = file_get_contents($descfile); return $this->fromXmlString($data); } /* * Parse channel information from different sources * * This method is able to extract information about a channel * from an .xml file or a string * * @access public * @param string Filename of the source or the source itself * @return bool / function fromAny($info) { if (is_string($info) && file_exists($info) && strlen($info) < 255) { $tmp = substr($info, -4); if ($tmp == '.xml') { $info = $this->fromXmlFile($info); } else { $fp = fopen($info, "r"); $test = fread($fp, 5); fclose($fp); if ($test == "<?xml") { $info = $this->fromXmlFile($info); } } if (PEAR::isError($info)) { require_once 'PEAR.php'; return PEAR::raiseError($info); } } if (is_string($info)) { $info = $this->fromXmlString($info); } return $info; } /* * Return an XML document based on previous parsing and modifications * * @return string XML data * * @access public / function toXml() { if (!$this->_isValid && !$this->validate()) { $this->_validateError(PEAR_CHANNELFILE_ERROR_INVALID); return false; } if (!isset($this->_channelInfo['attribs']['version'])) { $this->_channelInfo['attribs']['version'] = '1.0'; } $channelInfo = $this->_channelInfo; $ret = "<?xml version=\"1.0\" encoding=\"ISO-8859-1\" ?>\n"; $ret .= "<channel version=\"" . $channelInfo['attribs']['version'] . "\" xmlns=\"http://pear.php.net/channel-1.0\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:schemaLocation=\"http://pear.php.net/dtd/channel-" . $channelInfo['attribs']['version'] . " http://pear.php.net/dtd/channel-" . $channelInfo['attribs']['version'] . ".xsd\"> <name>$channelInfo[name]</name> <summary>" . htmlspecialchars($channelInfo['summary'])."</summary> "; if (isset($channelInfo['suggestedalias'])) { $ret .= ' <suggestedalias>' . $channelInfo['suggestedalias'] . "</suggestedalias>\n"; } if (isset($channelInfo['validatepackage'])) { $ret .= ' <validatepackage version="' . $channelInfo['validatepackage']['attribs']['version']. '">' . htmlspecialchars($channelInfo['validatepackage']['_content']) . "</validatepackage>\n"; } $ret .= " <servers>\n"; $ret .= ' <primary'; if (isset($channelInfo['servers']['primary']['attribs']['ssl'])) { $ret .= ' ssl="' . $channelInfo['servers']['primary']['attribs']['ssl'] . '"'; } if (isset($channelInfo['servers']['primary']['attribs']['port'])) { $ret .= ' port="' . $channelInfo['servers']['primary']['attribs']['port'] . '"'; } $ret .= ">\n"; if (isset($channelInfo['servers']['primary']['rest'])) { $ret .= $this->_makeRestXml($channelInfo['servers']['primary']['rest'], ' '); } $ret .= " </primary>\n"; if (isset($channelInfo['servers']['mirror'])) { $ret .= $this->_makeMirrorsXml($channelInfo); } $ret .= " </servers>\n"; $ret .= "</channel>"; return str_replace("\r", "\n", str_replace("\r\n", "\n", $ret)); } /* * Generate the <rest> tag * @access private / function _makeRestXml($info, $indent) { $ret = $indent . "<rest>\n"; if (isset($info['baseurl']) && !isset($info['baseurl'][0])) { $info['baseurl'] = array($info['baseurl']); } if (isset($info['baseurl'])) { foreach ($info['baseurl'] as $url) { $ret .= "$indent <baseurl type=\"" . $url['attribs']['type'] . "\""; $ret .= ">" . $url['_content'] . "</baseurl>\n"; } } $ret .= $indent . "</rest>\n"; return $ret; } /* * Generate the <mirrors> tag * @access private / function _makeMirrorsXml($channelInfo) { $ret = ""; if (!isset($channelInfo['servers']['mirror'][0])) { $channelInfo['servers']['mirror'] = array($channelInfo['servers']['mirror']); } foreach ($channelInfo['servers']['mirror'] as $mirror) { $ret .= ' <mirror host="' . $mirror['attribs']['host'] . '"'; if (isset($mirror['attribs']['port'])) { $ret .= ' port="' . $mirror['attribs']['port'] . '"'; } if (isset($mirror['attribs']['ssl'])) { $ret .= ' ssl="' . $mirror['attribs']['ssl'] . '"'; } $ret .= ">\n"; if (isset($mirror['rest'])) { if (isset($mirror['rest'])) { $ret .= $this->_makeRestXml($mirror['rest'], ' '); } $ret .= " </mirror>\n"; } else { $ret .= "/>\n"; } } return $ret; } /* * Generate the <functions> tag * @access private / function _makeFunctionsXml($functions, $indent, $rest = false) { $ret = ''; if (!isset($functions[0])) { $functions = array($functions); } foreach ($functions as $function) { $ret .= "$indent<function version=\"" . $function['attribs']['version'] . "\""; if ($rest) { $ret .= ' uri="' . $function['attribs']['uri'] . '"'; } $ret .= ">" . $function['_content'] . "</function>\n"; } return $ret; } /* * Validation error. Also marks the object contents as invalid * @param error code * @param array error information * @access private / function _validateError($code, $params = array()) { $this->_stack->push($code, 'error', $params); $this->_isValid = false; } /* * Validation warning. Does not mark the object contents invalid. * @param error code * @param array error information * @access private / function _validateWarning($code, $params = array()) { $this->_stack->push($code, 'warning', $params); } /* * Validate parsed file. * * @access public * @return boolean / function validate() { $this->_isValid = true; $info = $this->_channelInfo; if (empty($info['name'])) { $this->_validateError(PEAR_CHANNELFILE_ERROR_NO_NAME); } elseif (!$this->validChannelServer($info['name'])) { if ($info['name'] != '__uri') { $this->_validateError(PEAR_CHANNELFILE_ERROR_INVALID_NAME, array('tag' => 'name', 'name' => $info['name'])); } } if (empty($info['summary'])) { $this->_validateError(PEAR_CHANNELFILE_ERROR_NO_SUMMARY); } elseif (strpos(trim($info['summary']), "\n") !== false) { $this->_validateWarning(PEAR_CHANNELFILE_ERROR_MULTILINE_SUMMARY, array('summary' => $info['summary'])); } if (isset($info['suggestedalias'])) { if (!$this->validChannelServer($info['suggestedalias'])) { $this->_validateError(PEAR_CHANNELFILE_ERROR_INVALID_NAME, array('tag' => 'suggestedalias', 'name' =>$info['suggestedalias'])); } } if (isset($info['localalias'])) { if (!$this->validChannelServer($info['localalias'])) { $this->_validateError(PEAR_CHANNELFILE_ERROR_INVALID_NAME, array('tag' => 'localalias', 'name' =>$info['localalias'])); } } if (isset($info['validatepackage'])) { if (!isset($info['validatepackage']['_content'])) { $this->_validateError(PEAR_CHANNELFILE_ERROR_NOVALIDATE_NAME); } if (!isset($info['validatepackage']['attribs']['version'])) { $content = isset($info['validatepackage']['_content']) ? $info['validatepackage']['_content'] : null; $this->_validateError(PEAR_CHANNELFILE_ERROR_NOVALIDATE_VERSION, array('package' => $content)); } } if (isset($info['servers']['primary']['attribs'], $info['servers']['primary']['attribs']['port']) && !is_numeric($info['servers']['primary']['attribs']['port'])) { $this->_validateError(PEAR_CHANNELFILE_ERROR_INVALID_PORT, array('port' => $info['servers']['primary']['attribs']['port'])); } if (isset($info['servers']['primary']['attribs'], $info['servers']['primary']['attribs']['ssl']) && $info['servers']['primary']['attribs']['ssl'] != 'yes') { $this->_validateError(PEAR_CHANNELFILE_ERROR_INVALID_SSL, array('ssl' => $info['servers']['primary']['attribs']['ssl'], 'server' => $info['name'])); } if (isset($info['servers']['primary']['rest']) && isset($info['servers']['primary']['rest']['baseurl'])) { $this->_validateFunctions('rest', $info['servers']['primary']['rest']['baseurl']); } if (isset($info['servers']['mirror'])) { if ($this->_channelInfo['name'] == '__uri') { $this->_validateError(PEAR_CHANNELFILE_URI_CANT_MIRROR); } if (!isset($info['servers']['mirror'][0])) { $info['servers']['mirror'] = array($info['servers']['mirror']); } foreach ($info['servers']['mirror'] as $mirror) { if (!isset($mirror['attribs']['host'])) { $this->_validateError(PEAR_CHANNELFILE_ERROR_NO_HOST, array('type' => 'mirror')); } elseif (!$this->validChannelServer($mirror['attribs']['host'])) { $this->_validateError(PEAR_CHANNELFILE_ERROR_INVALID_HOST, array('server' => $mirror['attribs']['host'], 'type' => 'mirror')); } if (isset($mirror['attribs']['ssl']) && $mirror['attribs']['ssl'] != 'yes') { $this->_validateError(PEAR_CHANNELFILE_ERROR_INVALID_SSL, array('ssl' => $info['ssl'], 'server' => $mirror['attribs']['host'])); } if (isset($mirror['rest'])) { $this->_validateFunctions('rest', $mirror['rest']['baseurl'], $mirror['attribs']['host']); } } } return $this->_isValid; } /* * @param string rest - protocol name this function applies to * @param array the functions * @param string the name of the parent element (mirror name, for instance) / function _validateFunctions($protocol, $functions, $parent = '') { if (!isset($functions[0])) { $functions = array($functions); } foreach ($functions as $function) { if (!isset($function['_content']) \|\| empty($function['_content'])) { $this->_validateError(PEAR_CHANNELFILE_ERROR_NO_FUNCTIONNAME, array('parent' => $parent, 'protocol' => $protocol)); } if ($protocol == 'rest') { if (!isset($function['attribs']['type']) \|\| empty($function['attribs']['type'])) { $this->_validateError(PEAR_CHANNELFILE_ERROR_NOBASEURLTYPE, array('parent' => $parent, 'protocol' => $protocol)); } } else { if (!isset($function['attribs']['version']) \|\| empty($function['attribs']['version'])) { $this->_validateError(PEAR_CHANNELFILE_ERROR_NO_FUNCTIONVERSION, array('parent' => $parent, 'protocol' => $protocol)); } } } } /* * Test whether a string contains a valid channel server. * @param string $ver the package version to test * @return bool / function validChannelServer($server) { if ($server == '__uri') { return true; } return (bool) preg_match(PEAR_CHANNELS_SERVER_PREG, $server); } /* * @return string\|false / function getName() { if (isset($this->_channelInfo['name'])) { return $this->_channelInfo['name']; } return false; } /* * @return string\|false / function getServer() { if (isset($this->_channelInfo['name'])) { return $this->_channelInfo['name']; } return false; } /* * @return int\|80 port number to connect to / function getPort($mirror = false) { if ($mirror) { if ($mir = $this->getMirror($mirror)) { if (isset($mir['attribs']['port'])) { return $mir['attribs']['port']; } if ($this->getSSL($mirror)) { return 443; } return 80; } return false; } if (isset($this->_channelInfo['servers']['primary']['attribs']['port'])) { return $this->_channelInfo['servers']['primary']['attribs']['port']; } if ($this->getSSL()) { return 443; } return 80; } /* * @return bool Determines whether secure sockets layer (SSL) is used to connect to this channel / function getSSL($mirror = false) { if ($mirror) { if ($mir = $this->getMirror($mirror)) { if (isset($mir['attribs']['ssl'])) { return true; } return false; } return false; } if (isset($this->_channelInfo['servers']['primary']['attribs']['ssl'])) { return true; } return false; } /* * @return string\|false / function getSummary() { if (isset($this->_channelInfo['summary'])) { return $this->_channelInfo['summary']; } return false; } /* * @param string protocol type * @param string Mirror name * @return array\|false / function getFunctions($protocol, $mirror = false) { if ($this->getName() == '__uri') { return false; } $function = $protocol == 'rest' ? 'baseurl' : 'function'; if ($mirror) { if ($mir = $this->getMirror($mirror)) { if (isset($mir[$protocol][$function])) { return $mir[$protocol][$function]; } } return false; } if (isset($this->_channelInfo['servers']['primary'][$protocol][$function])) { return $this->_channelInfo['servers']['primary'][$protocol][$function]; } return false; } /* * @param string Protocol type * @param string Function name (null to return the * first protocol of the type requested) * @param string Mirror name, if any * @return array / function getFunction($type, $name = null, $mirror = false) { $protocols = $this->getFunctions($type, $mirror); if (!$protocols) { return false; } foreach ($protocols as $protocol) { if ($name === null) { return $protocol; } if ($protocol['_content'] != $name) { continue; } return $protocol; } return false; } /* * @param string protocol type * @param string protocol name * @param string version * @param string mirror name * @return boolean / function supports($type, $name = null, $mirror = false, $version = '1.0') { $protocols = $this->getFunctions($type, $mirror); if (!$protocols) { return false; } foreach ($protocols as $protocol) { if ($protocol['attribs']['version'] != $version) { continue; } if ($name === null) { return true; } if ($protocol['_content'] != $name) { continue; } return true; } return false; } /* * Determines whether a channel supports Representational State Transfer (REST) protocols * for retrieving channel information * @param string * @return bool / function supportsREST($mirror = false) { if ($mirror == $this->_channelInfo['name']) { $mirror = false; } if ($mirror) { if ($mir = $this->getMirror($mirror)) { return isset($mir['rest']); } return false; } return isset($this->_channelInfo['servers']['primary']['rest']); } /* * Get the URL to access a base resource. * * Hyperlinks in the returned xml will be used to retrieve the proper information * needed. This allows extreme extensibility and flexibility in implementation * @param string Resource Type to retrieve / function getBaseURL($resourceType, $mirror = false) { if ($mirror == $this->_channelInfo['name']) { $mirror = false; } if ($mirror) { $mir = $this->getMirror($mirror); if (!$mir) { return false; } $rest = $mir['rest']; } else { $rest = $this->_channelInfo['servers']['primary']['rest']; } if (!isset($rest['baseurl'][0])) { $rest['baseurl'] = array($rest['baseurl']); } foreach ($rest['baseurl'] as $baseurl) { if (strtolower($baseurl['attribs']['type']) == strtolower($resourceType)) { return $baseurl['_content']; } } return false; } /* * Since REST does not implement RPC, provide this as a logical wrapper around * resetFunctions for REST * @param string\|false mirror name, if any / function resetREST($mirror = false) { return $this->resetFunctions('rest', $mirror); } /* * Empty all protocol definitions * @param string protocol type * @param string\|false mirror name, if any / function resetFunctions($type, $mirror = false) { if ($mirror) { if (isset($this->_channelInfo['servers']['mirror'])) { $mirrors = $this->_channelInfo['servers']['mirror']; if (!isset($mirrors[0])) { $mirrors = array($mirrors); } foreach ($mirrors as $i => $mir) { if ($mir['attribs']['host'] == $mirror) { if (isset($this->_channelInfo['servers']['mirror'][$i][$type])) { unset($this->_channelInfo['servers']['mirror'][$i][$type]); } return true; } } return false; } return false; } if (isset($this->_channelInfo['servers']['primary'][$type])) { unset($this->_channelInfo['servers']['primary'][$type]); } return true; } /* * Set a channel's protocols to the protocols supported by pearweb / function setDefaultPEARProtocols($version = '1.0', $mirror = false) { switch ($version) { case '1.0' : $this->resetREST($mirror); if (!isset($this->_channelInfo['servers'])) { $this->_channelInfo['servers'] = array('primary' => array('rest' => array())); } elseif (!isset($this->_channelInfo['servers']['primary'])) { $this->_channelInfo['servers']['primary'] = array('rest' => array()); } return true; break; default : return false; break; } } /* * @return array / function getMirrors() { if (isset($this->_channelInfo['servers']['mirror'])) { $mirrors = $this->_channelInfo['servers']['mirror']; if (!isset($mirrors[0])) { $mirrors = array($mirrors); } return $mirrors; } return array(); } /* * Get the unserialized XML representing a mirror * @return array\|false / function getMirror($server) { foreach ($this->getMirrors() as $mirror) { if ($mirror['attribs']['host'] == $server) { return $mirror; } } return false; } /* * @param string * @return string\|false * @error PEAR_CHANNELFILE_ERROR_NO_NAME * @error PEAR_CHANNELFILE_ERROR_INVALID_NAME / function setName($name) { return $this->setServer($name); } /* * Set the socket number (port) that is used to connect to this channel * @param integer * @param string\|false name of the mirror server, or false for the primary / function setPort($port, $mirror = false) { if ($mirror) { if (!isset($this->_channelInfo['servers']['mirror'])) { $this->_validateError(PEAR_CHANNELFILE_ERROR_MIRROR_NOT_FOUND, array('mirror' => $mirror)); return false; } if (isset($this->_channelInfo['servers']['mirror'][0])) { foreach ($this->_channelInfo['servers']['mirror'] as $i => $mir) { if ($mirror == $mir['attribs']['host']) { $this->_channelInfo['servers']['mirror'][$i]['attribs']['port'] = $port; return true; } } return false; } elseif ($this->_channelInfo['servers']['mirror']['attribs']['host'] == $mirror) { $this->_channelInfo['servers']['mirror']['attribs']['port'] = $port; $this->_isValid = false; return true; } } $this->_channelInfo['servers']['primary']['attribs']['port'] = $port; $this->_isValid = false; return true; } /* * Set the socket number (port) that is used to connect to this channel * @param bool Determines whether to turn on SSL support or turn it off * @param string\|false name of the mirror server, or false for the primary / function setSSL($ssl = true, $mirror = false) { if ($mirror) { if (!isset($this->_channelInfo['servers']['mirror'])) { $this->_validateError(PEAR_CHANNELFILE_ERROR_MIRROR_NOT_FOUND, array('mirror' => $mirror)); return false; } if (isset($this->_channelInfo['servers']['mirror'][0])) { foreach ($this->_channelInfo['servers']['mirror'] as $i => $mir) { if ($mirror == $mir['attribs']['host']) { if (!$ssl) { if (isset($this->_channelInfo['servers']['mirror'][$i] ['attribs']['ssl'])) { unset($this->_channelInfo['servers']['mirror'][$i]['attribs']['ssl']); } } else { $this->_channelInfo['servers']['mirror'][$i]['attribs']['ssl'] = 'yes'; } return true; } } return false; } elseif ($this->_channelInfo['servers']['mirror']['attribs']['host'] == $mirror) { if (!$ssl) { if (isset($this->_channelInfo['servers']['mirror']['attribs']['ssl'])) { unset($this->_channelInfo['servers']['mirror']['attribs']['ssl']); } } else { $this->_channelInfo['servers']['mirror']['attribs']['ssl'] = 'yes'; } $this->_isValid = false; return true; } } if ($ssl) { $this->_channelInfo['servers']['primary']['attribs']['ssl'] = 'yes'; } else { if (isset($this->_channelInfo['servers']['primary']['attribs']['ssl'])) { unset($this->_channelInfo['servers']['primary']['attribs']['ssl']); } } $this->_isValid = false; return true; } /* * @param string * @return string\|false * @error PEAR_CHANNELFILE_ERROR_NO_SERVER * @error PEAR_CHANNELFILE_ERROR_INVALID_SERVER / function setServer($server, $mirror = false) { if (empty($server)) { $this->_validateError(PEAR_CHANNELFILE_ERROR_NO_SERVER); return false; } elseif (!$this->validChannelServer($server)) { $this->_validateError(PEAR_CHANNELFILE_ERROR_INVALID_NAME, array('tag' => 'name', 'name' => $server)); return false; } if ($mirror) { $found = false; foreach ($this->_channelInfo['servers']['mirror'] as $i => $mir) { if ($mirror == $mir['attribs']['host']) { $found = true; break; } } if (!$found) { $this->_validateError(PEAR_CHANNELFILE_ERROR_MIRROR_NOT_FOUND, array('mirror' => $mirror)); return false; } $this->_channelInfo['mirror'][$i]['attribs']['host'] = $server; return true; } $this->_channelInfo['name'] = $server; return true; } /* * @param string * @return boolean success * @error PEAR_CHANNELFILE_ERROR_NO_SUMMARY * @warning PEAR_CHANNELFILE_ERROR_MULTILINE_SUMMARY / function setSummary($summary) { if (empty($summary)) { $this->_validateError(PEAR_CHANNELFILE_ERROR_NO_SUMMARY); return false; } elseif (strpos(trim($summary), "\n") !== false) { $this->_validateWarning(PEAR_CHANNELFILE_ERROR_MULTILINE_SUMMARY, array('summary' => $summary)); } $this->_channelInfo['summary'] = $summary; return true; } /* * @param string * @param boolean determines whether the alias is in channel.xml or local * @return boolean success / function setAlias($alias, $local = false) { if (!$this->validChannelServer($alias)) { $this->_validateError(PEAR_CHANNELFILE_ERROR_INVALID_NAME, array('tag' => 'suggestedalias', 'name' => $alias)); return false; } if ($local) { $this->_channelInfo['localalias'] = $alias; } else { $this->_channelInfo['suggestedalias'] = $alias; } return true; } /* * @return string / function getAlias() { if (isset($this->_channelInfo['localalias'])) { return $this->_channelInfo['localalias']; } if (isset($this->_channelInfo['suggestedalias'])) { return $this->_channelInfo['suggestedalias']; } if (isset($this->_channelInfo['name'])) { return $this->_channelInfo['name']; } return ''; } /* * Set the package validation object if it differs from PEAR's default * The class must be includeable via changing _ in the classname to path separator, * but no checking of this is made. * @param string\|false pass in false to reset to the default packagename regex * @return boolean success / function setValidationPackage($validateclass, $version) { if (empty($validateclass)) { unset($this->_channelInfo['validatepackage']); } $this->_channelInfo['validatepackage'] = array('_content' => $validateclass); $this->_channelInfo['validatepackage']['attribs'] = array('version' => $version); } /* * Add a protocol to the provides section * @param string protocol type * @param string protocol version * @param string protocol name, if any * @param string mirror name, if this is a mirror's protocol * @return bool / function addFunction($type, $version, $name = '', $mirror = false) { if ($mirror) { return $this->addMirrorFunction($mirror, $type, $version, $name); } $set = array('attribs' => array('version' => $version), '_content' => $name); if (!isset($this->_channelInfo['servers']['primary'][$type]['function'])) { if (!isset($this->_channelInfo['servers'])) { $this->_channelInfo['servers'] = array('primary' => array($type => array())); } elseif (!isset($this->_channelInfo['servers']['primary'])) { $this->_channelInfo['servers']['primary'] = array($type => array()); } $this->_channelInfo['servers']['primary'][$type]['function'] = $set; $this->_isValid = false; return true; } elseif (!isset($this->_channelInfo['servers']['primary'][$type]['function'][0])) { $this->_channelInfo['servers']['primary'][$type]['function'] = array( $this->_channelInfo['servers']['primary'][$type]['function']); } $this->_channelInfo['servers']['primary'][$type]['function'][] = $set; return true; } /* * Add a protocol to a mirror's provides section * @param string mirror name (server) * @param string protocol type * @param string protocol version * @param string protocol name, if any / function addMirrorFunction($mirror, $type, $version, $name = '') { if (!isset($this->_channelInfo['servers']['mirror'])) { $this->_validateError(PEAR_CHANNELFILE_ERROR_MIRROR_NOT_FOUND, array('mirror' => $mirror)); return false; } $setmirror = false; if (isset($this->_channelInfo['servers']['mirror'][0])) { foreach ($this->_channelInfo['servers']['mirror'] as $i => $mir) { if ($mirror == $mir['attribs']['host']) { $setmirror = &$this->_channelInfo['servers']['mirror'][$i]; break; } } } else { if ($this->_channelInfo['servers']['mirror']['attribs']['host'] == $mirror) { $setmirror = &$this->_channelInfo['servers']['mirror']; } } if (!$setmirror) { $this->_validateError(PEAR_CHANNELFILE_ERROR_MIRROR_NOT_FOUND, array('mirror' => $mirror)); return false; } $set = array('attribs' => array('version' => $version), '_content' => $name); if (!isset($setmirror[$type]['function'])) { $setmirror[$type]['function'] = $set; $this->_isValid = false; return true; } elseif (!isset($setmirror[$type]['function'][0])) { $setmirror[$type]['function'] = array($setmirror[$type]['function']); } $setmirror[$type]['function'][] = $set; $this->_isValid = false; return true; } /* * @param string Resource Type this url links to * @param string URL * @param string\|false mirror name, if this is not a primary server REST base URL / function setBaseURL($resourceType, $url, $mirror = false) { if ($mirror) { if (!isset($this->_channelInfo['servers']['mirror'])) { $this->_validateError(PEAR_CHANNELFILE_ERROR_MIRROR_NOT_FOUND, array('mirror' => $mirror)); return false; } $setmirror = false; if (isset($this->_channelInfo['servers']['mirror'][0])) { foreach ($this->_channelInfo['servers']['mirror'] as $i => $mir) { if ($mirror == $mir['attribs']['host']) { $setmirror = &$this->_channelInfo['servers']['mirror'][$i]; break; } } } else { if ($this->_channelInfo['servers']['mirror']['attribs']['host'] == $mirror) { $setmirror = &$this->_channelInfo['servers']['mirror']; } } } else { $setmirror = &$this->_channelInfo['servers']['primary']; } $set = array('attribs' => array('type' => $resourceType), '_content' => $url); if (!isset($setmirror['rest'])) { $setmirror['rest'] = array(); } if (!isset($setmirror['rest']['baseurl'])) { $setmirror['rest']['baseurl'] = $set; $this->_isValid = false; return true; } elseif (!isset($setmirror['rest']['baseurl'][0])) { $setmirror['rest']['baseurl'] = array($setmirror['rest']['baseurl']); } foreach ($setmirror['rest']['baseurl'] as $i => $url) { if ($url['attribs']['type'] == $resourceType) { $this->_isValid = false; $setmirror['rest']['baseurl'][$i] = $set; return true; } } $setmirror['rest']['baseurl'][] = $set; $this->_isValid = false; return true; } /* * @param string mirror server * @param int mirror http port * @return boolean / function addMirror($server, $port = null) { if ($this->_channelInfo['name'] == '__uri') { return false; // the __uri channel cannot have mirrors by definition } $set = array('attribs' => array('host' => $server)); if (is_numeric($port)) { $set['attribs']['port'] = $port; } if (!isset($this->_channelInfo['servers']['mirror'])) { $this->_channelInfo['servers']['mirror'] = $set; return true; } if (!isset($this->_channelInfo['servers']['mirror'][0])) { $this->_channelInfo['servers']['mirror'] = array($this->_channelInfo['servers']['mirror']); } $this->_channelInfo['servers']['mirror'][] = $set; return true; } /* * Retrieve the name of the validation package for this channel * @return string\|false / function getValidationPackage() { if (!$this->_isValid && !$this->validate()) { return false; } if (!isset($this->_channelInfo['validatepackage'])) { return array('attribs' => array('version' => 'default'), '_content' => 'PEAR_Validate'); } return $this->_channelInfo['validatepackage']; } /* * Retrieve the object that can be used for custom validation * @param string\|false the name of the package to validate. If the package is * the channel validation package, PEAR_Validate is returned * @return PEAR_Validate\|false false is returned if the validation package * cannot be located / function &getValidationObject($package = false) { if (!class_exists('PEAR_Validate')) { require_once 'PEAR/Validate.php'; } if (!$this->_isValid) { if (!$this->validate()) { $a = false; return $a; } } if (isset($this->_channelInfo['validatepackage'])) { if ($package == $this->_channelInfo['validatepackage']) { // channel validation packages are always validated by PEAR_Validate $val = new PEAR_Validate; return $val; } if (!class_exists(str_replace('.', '_', $this->_channelInfo['validatepackage']['_content']))) { if ($this->isIncludeable(str_replace('_', '/', $this->_channelInfo['validatepackage']['_content']) . '.php')) { include_once str_replace('_', '/', $this->_channelInfo['validatepackage']['_content']) . '.php'; $vclass = str_replace('.', '_', $this->_channelInfo['validatepackage']['_content']); $val = new $vclass; } else { $a = false; return $a; } } else { $vclass = str_replace('.', '_', $this->_channelInfo['validatepackage']['_content']); $val = new $vclass; } } else { $val = new PEAR_Validate; } return $val; } function isIncludeable($path) { $possibilities = explode(PATH_SEPARATOR, ini_get('include_path')); foreach ($possibilities as $dir) { if (file_exists($dir . DIRECTORY_SEPARATOR . $path) && is_readable($dir . DIRECTORY_SEPARATOR . $path)) { return true; } } return false; } /* * This function is used by the channel updater and retrieves a value set by * the registry, or the current time if it has not been set * @return string */ function lastModified() { if (isset($this->_channelInfo['_lastmodified'])) { return $this->_channelInfo['_lastmodified']; } return time(); } } Back

Edit File : ChannelFile.php | Size : 49.65 KB

<?php
/**
 * PEAR_ChannelFile, the channel handling class
 *
 * PHP versions 4 and 5
 *
 * @category   pear
 * @package    PEAR
 * @author     Greg Beaver <cellog@php.net>
 * @copyright  1997-2009 The Authors
 * @license    http://opensource.org/licenses/bsd-license.php New BSD License
 * @link       http://pear.php.net/package/PEAR
 * @since      File available since Release 1.4.0a1
 */

/**
 * Needed for error handling
 */
require_once 'PEAR/ErrorStack.php';
require_once 'PEAR/XMLParser.php';
require_once 'PEAR/Common.php';

/**
 * Error code if the channel.xml <channel> tag does not contain a valid version
 */
define('PEAR_CHANNELFILE_ERROR_NO_VERSION', 1);
/**
 * Error code if the channel.xml <channel> tag version is not supported (version 1.0 is the only supported version,
 * currently
 */
define('PEAR_CHANNELFILE_ERROR_INVALID_VERSION', 2);

/**
 * Error code if parsing is attempted with no xml extension
 */
define('PEAR_CHANNELFILE_ERROR_NO_XML_EXT', 3);

/**
 * Error code if creating the xml parser resource fails
 */
define('PEAR_CHANNELFILE_ERROR_CANT_MAKE_PARSER', 4);

/**
 * Error code used for all sax xml parsing errors
 */
define('PEAR_CHANNELFILE_ERROR_PARSER_ERROR', 5);

/**#@+
 * Validation errors
 */
/**
 * Error code when channel name is missing
 */
define('PEAR_CHANNELFILE_ERROR_NO_NAME', 6);
/**
 * Error code when channel name is invalid
 */
define('PEAR_CHANNELFILE_ERROR_INVALID_NAME', 7);
/**
 * Error code when channel summary is missing
 */
define('PEAR_CHANNELFILE_ERROR_NO_SUMMARY', 8);
/**
 * Error code when channel summary is multi-line
 */
define('PEAR_CHANNELFILE_ERROR_MULTILINE_SUMMARY', 9);
/**
 * Error code when channel server is missing for protocol
 */
define('PEAR_CHANNELFILE_ERROR_NO_HOST', 10);
/**
 * Error code when channel server is invalid for protocol
 */
define('PEAR_CHANNELFILE_ERROR_INVALID_HOST', 11);
/**
 * Error code when a mirror name is invalid
 */
define('PEAR_CHANNELFILE_ERROR_INVALID_MIRROR', 21);
/**
 * Error code when a mirror type is invalid
 */
define('PEAR_CHANNELFILE_ERROR_INVALID_MIRRORTYPE', 22);
/**
 * Error code when an attempt is made to generate xml, but the parsed content is invalid
 */
define('PEAR_CHANNELFILE_ERROR_INVALID', 23);
/**
 * Error code when an empty package name validate regex is passed in
 */
define('PEAR_CHANNELFILE_ERROR_EMPTY_REGEX', 24);
/**
 * Error code when a <function> tag has no version
 */
define('PEAR_CHANNELFILE_ERROR_NO_FUNCTIONVERSION', 25);
/**
 * Error code when a <function> tag has no name
 */
define('PEAR_CHANNELFILE_ERROR_NO_FUNCTIONNAME', 26);
/**
 * Error code when a <validatepackage> tag has no name
 */
define('PEAR_CHANNELFILE_ERROR_NOVALIDATE_NAME', 27);
/**
 * Error code when a <validatepackage> tag has no version attribute
 */
define('PEAR_CHANNELFILE_ERROR_NOVALIDATE_VERSION', 28);
/**
 * Error code when a mirror does not exist but is called for in one of the set*
 * methods.
 */
define('PEAR_CHANNELFILE_ERROR_MIRROR_NOT_FOUND', 32);
/**
 * Error code when a server port is not numeric
 */
define('PEAR_CHANNELFILE_ERROR_INVALID_PORT', 33);
/**
 * Error code when <static> contains no version attribute
 */
define('PEAR_CHANNELFILE_ERROR_NO_STATICVERSION', 34);
/**
 * Error code when <baseurl> contains no type attribute in a <rest> protocol definition
 */
define('PEAR_CHANNELFILE_ERROR_NOBASEURLTYPE', 35);
/**
 * Error code when a mirror is defined and the channel.xml represents the __uri pseudo-channel
 */
define('PEAR_CHANNELFILE_URI_CANT_MIRROR', 36);
/**
 * Error code when ssl attribute is present and is not "yes"
 */
define('PEAR_CHANNELFILE_ERROR_INVALID_SSL', 37);
/**#@-*/

/**
 * Mirror types allowed.  Currently only internet servers are recognized.
 */
$GLOBALS['_PEAR_CHANNELS_MIRROR_TYPES'] =  array('server');

/**
 * The Channel handling class
 *
 * @category   pear
 * @package    PEAR
 * @author     Greg Beaver <cellog@php.net>
 * @copyright  1997-2009 The Authors
 * @license    http://opensource.org/licenses/bsd-license.php New BSD License
 * @version    Release: 1.10.16
 * @link       http://pear.php.net/package/PEAR
 * @since      Class available since Release 1.4.0a1
 */
class PEAR_ChannelFile
{
    /**
     * @access private
     * @var PEAR_ErrorStack
     * @access private
     */
    var $_stack;

/**
     * Supported channel.xml versions, for parsing
     * @var array
     * @access private
     */
    var $_supportedVersions = array('1.0');

/**
     * Parsed channel information
     * @var array
     * @access private
     */
    var $_channelInfo;

/**
     * index into the subchannels array, used for parsing xml
     * @var int
     * @access private
     */
    var $_subchannelIndex;

/**
     * index into the mirrors array, used for parsing xml
     * @var int
     * @access private
     */
    var $_mirrorIndex;

/**
     * Flag used to determine the validity of parsed content
     * @var boolean
     * @access private
     */
    var $_isValid = false;

function __construct()
    {
        $this->_stack = new PEAR_ErrorStack('PEAR_ChannelFile');
        $this->_stack->setErrorMessageTemplate($this->_getErrorMessage());
        $this->_isValid = false;
    }

/**
     * @return array
     * @access protected
     */
    function _getErrorMessage()
    {
        return
            array(
                PEAR_CHANNELFILE_ERROR_INVALID_VERSION =>
                    'While parsing channel.xml, an invalid version number "%version% was passed in, expecting one of %versions%',
                PEAR_CHANNELFILE_ERROR_NO_VERSION =>
                    'No version number found in <channel> tag',
                PEAR_CHANNELFILE_ERROR_NO_XML_EXT =>
                    '%error%',
                PEAR_CHANNELFILE_ERROR_CANT_MAKE_PARSER =>
                    'Unable to create XML parser',
                PEAR_CHANNELFILE_ERROR_PARSER_ERROR =>
                    '%error%',
                PEAR_CHANNELFILE_ERROR_NO_NAME =>
                    'Missing channel name',
                PEAR_CHANNELFILE_ERROR_INVALID_NAME =>
                    'Invalid channel %tag% "%name%"',
                PEAR_CHANNELFILE_ERROR_NO_SUMMARY =>
                    'Missing channel summary',
                PEAR_CHANNELFILE_ERROR_MULTILINE_SUMMARY =>
                    'Channel summary should be on one line, but is multi-line',
                PEAR_CHANNELFILE_ERROR_NO_HOST =>
                    'Missing channel server for %type% server',
                PEAR_CHANNELFILE_ERROR_INVALID_HOST =>
                    'Server name "%server%" is invalid for %type% server',
                PEAR_CHANNELFILE_ERROR_INVALID_MIRROR =>
                    'Invalid mirror name "%name%", mirror type %type%',
                PEAR_CHANNELFILE_ERROR_INVALID_MIRRORTYPE =>
                    'Invalid mirror type "%type%"',
                PEAR_CHANNELFILE_ERROR_INVALID =>
                    'Cannot generate xml, contents are invalid',
                PEAR_CHANNELFILE_ERROR_EMPTY_REGEX =>
                    'packagenameregex cannot be empty',
                PEAR_CHANNELFILE_ERROR_NO_FUNCTIONVERSION =>
                    '%parent% %protocol% function has no version',
                PEAR_CHANNELFILE_ERROR_NO_FUNCTIONNAME =>
                    '%parent% %protocol% function has no name',
                PEAR_CHANNELFILE_ERROR_NOBASEURLTYPE =>
                    '%parent% rest baseurl has no type',
                PEAR_CHANNELFILE_ERROR_NOVALIDATE_NAME =>
                    'Validation package has no name in <validatepackage> tag',
                PEAR_CHANNELFILE_ERROR_NOVALIDATE_VERSION =>
                    'Validation package "%package%" has no version',
                PEAR_CHANNELFILE_ERROR_MIRROR_NOT_FOUND =>
                    'Mirror "%mirror%" does not exist',
                PEAR_CHANNELFILE_ERROR_INVALID_PORT =>
                    'Port "%port%" must be numeric',
                PEAR_CHANNELFILE_ERROR_NO_STATICVERSION =>
                    '<static> tag must contain version attribute',
                PEAR_CHANNELFILE_URI_CANT_MIRROR =>
                    'The __uri pseudo-channel cannot have mirrors',
                PEAR_CHANNELFILE_ERROR_INVALID_SSL =>
                    '%server% has invalid ssl attribute "%ssl%" can only be yes or not present',
            );
    }

/**
     * @param string contents of package.xml file
     * @return bool success of parsing
     */
    function fromXmlString($data)
    {
        if (preg_match('/<channel\s+version="([0-9]+\.[0-9]+)"/', $data, $channelversion)) {
            if (!in_array($channelversion[1], $this->_supportedVersions)) {
                $this->_stack->push(PEAR_CHANNELFILE_ERROR_INVALID_VERSION, 'error',
                    array('version' => $channelversion[1]));
                return false;
            }
            $parser = new PEAR_XMLParser;
            $result = $parser->parse($data);
            if ($result !== true) {
                if ($result->getCode() == 1) {
                    $this->_stack->push(PEAR_CHANNELFILE_ERROR_NO_XML_EXT, 'error',
                        array('error' => $result->getMessage()));
                } else {
                    $this->_stack->push(PEAR_CHANNELFILE_ERROR_CANT_MAKE_PARSER, 'error');
                }
                return false;
            }
            $this->_channelInfo = $parser->getData();
            return true;
        } else {
            $this->_stack->push(PEAR_CHANNELFILE_ERROR_NO_VERSION, 'error', array('xml' => $data));
            return false;
        }
    }

/**
     * @return array
     */
    function toArray()
    {
        if (!$this->_isValid && !$this->validate()) {
            return false;
        }
        return $this->_channelInfo;
    }

/**
     * @param array
     *
     * @return PEAR_ChannelFile|false false if invalid
     */
    public static function &fromArray(
        $data, $compatibility = false, $stackClass = 'PEAR_ErrorStack'
    ) {
        $a = new PEAR_ChannelFile($compatibility, $stackClass);
        $a->_fromArray($data);
        if (!$a->validate()) {
            $a = false;
            return $a;
        }
        return $a;
    }

/**
     * Unlike {@link fromArray()} this does not do any validation
     *
     * @param array
     *
     * @return PEAR_ChannelFile
     */
    public static function &fromArrayWithErrors(
        $data, $compatibility = false, $stackClass = 'PEAR_ErrorStack'
    ) {
        $a = new PEAR_ChannelFile($compatibility, $stackClass);
        $a->_fromArray($data);
        return $a;
    }

/**
     * @param array
     * @access private
     */
    function _fromArray($data)
    {
        $this->_channelInfo = $data;
    }

/**
     * Wrapper to {@link PEAR_ErrorStack::getErrors()}
     * @param boolean determines whether to purge the error stack after retrieving
     * @return array
     */
    function getErrors($purge = false)
    {
        return $this->_stack->getErrors($purge);
    }

/**
     * Unindent given string (?)
     *
     * @param string $str The string that has to be unindented.
     * @return string
     * @access private
     */
    function _unIndent($str)
    {
        // remove leading newlines
        $str = preg_replace('/^[\r\n]+/', '', $str);
        // find whitespace at the beginning of the first line
        $indent_len = strspn($str, " \t");
        $indent = substr($str, 0, $indent_len);
        $data = '';
        // remove the same amount of whitespace from following lines
        foreach (explode("\n", $str) as $line) {
            if (substr($line, 0, $indent_len) == $indent) {
                $data .= substr($line, $indent_len) . "\n";
            }
        }
        return $data;
    }

/**
     * Parse a channel.xml file.  Expects the name of
     * a channel xml file as input.
     *
     * @param string  $descfile  name of channel xml file
     * @return bool success of parsing
     */
    function fromXmlFile($descfile)
    {
        if (!file_exists($descfile) || !is_file($descfile) || !is_readable($descfile) ||
             (!$fp = fopen($descfile, 'r'))) {
            require_once 'PEAR.php';
            return PEAR::raiseError("Unable to open $descfile");
        }

// read the whole thing so we only get one cdata callback
        // for each block of cdata
        fclose($fp);
        $data = file_get_contents($descfile);
        return $this->fromXmlString($data);
    }

/**
     * Parse channel information from different sources
     *
     * This method is able to extract information about a channel
     * from an .xml file or a string
     *
     * @access public
     * @param  string Filename of the source or the source itself
     * @return bool
     */
    function fromAny($info)
    {
        if (is_string($info) && file_exists($info) && strlen($info) < 255) {
            $tmp = substr($info, -4);
            if ($tmp == '.xml') {
                $info = $this->fromXmlFile($info);
            } else {
                $fp = fopen($info, "r");
                $test = fread($fp, 5);
                fclose($fp);
                if ($test == "<?xml") {
                    $info = $this->fromXmlFile($info);
                }
            }
            if (PEAR::isError($info)) {
                require_once 'PEAR.php';
                return PEAR::raiseError($info);
            }
        }
        if (is_string($info)) {
            $info = $this->fromXmlString($info);
        }
        return $info;
    }

/**
     * Return an XML document based on previous parsing and modifications
     *
     * @return string XML data
     *
     * @access public
     */
    function toXml()
    {
        if (!$this->_isValid && !$this->validate()) {
            $this->_validateError(PEAR_CHANNELFILE_ERROR_INVALID);
            return false;
        }
        if (!isset($this->_channelInfo['attribs']['version'])) {
            $this->_channelInfo['attribs']['version'] = '1.0';
        }
        $channelInfo = $this->_channelInfo;
        $ret = "<?xml version=\"1.0\" encoding=\"ISO-8859-1\" ?>\n";
        $ret .= "<channel version=\"" .
            $channelInfo['attribs']['version'] . "\" xmlns=\"http://pear.php.net/channel-1.0\"
  xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"
  xsi:schemaLocation=\"http://pear.php.net/dtd/channel-"
            . $channelInfo['attribs']['version'] . " http://pear.php.net/dtd/channel-" .
            $channelInfo['attribs']['version'] . ".xsd\">
 <name>$channelInfo[name]</name>
 <summary>" . htmlspecialchars($channelInfo['summary'])."</summary>
";
        if (isset($channelInfo['suggestedalias'])) {
            $ret .= ' <suggestedalias>' . $channelInfo['suggestedalias'] . "</suggestedalias>\n";
        }
        if (isset($channelInfo['validatepackage'])) {
            $ret .= ' <validatepackage version="' .
                $channelInfo['validatepackage']['attribs']['version']. '">' .
                htmlspecialchars($channelInfo['validatepackage']['_content']) .
                "</validatepackage>\n";
        }
        $ret .= " <servers>\n";
        $ret .= '  <primary';
        if (isset($channelInfo['servers']['primary']['attribs']['ssl'])) {
            $ret .= ' ssl="' . $channelInfo['servers']['primary']['attribs']['ssl'] . '"';
        }
        if (isset($channelInfo['servers']['primary']['attribs']['port'])) {
            $ret .= ' port="' . $channelInfo['servers']['primary']['attribs']['port'] . '"';
        }
        $ret .= ">\n";
        if (isset($channelInfo['servers']['primary']['rest'])) {
            $ret .= $this->_makeRestXml($channelInfo['servers']['primary']['rest'], '   ');
        }
        $ret .= "  </primary>\n";
        if (isset($channelInfo['servers']['mirror'])) {
            $ret .= $this->_makeMirrorsXml($channelInfo);
        }
        $ret .= " </servers>\n";
        $ret .= "</channel>";
        return str_replace("\r", "\n", str_replace("\r\n", "\n", $ret));
    }

/**
     * Generate the <rest> tag
     * @access private
     */
    function _makeRestXml($info, $indent)
    {
        $ret = $indent . "<rest>\n";
        if (isset($info['baseurl']) && !isset($info['baseurl'][0])) {
            $info['baseurl'] = array($info['baseurl']);
        }

if (isset($info['baseurl'])) {
            foreach ($info['baseurl'] as $url) {
                $ret .= "$indent <baseurl type=\"" . $url['attribs']['type'] . "\"";
                $ret .= ">" . $url['_content'] . "</baseurl>\n";
            }
        }
        $ret .= $indent . "</rest>\n";
        return $ret;
    }

/**
     * Generate the <mirrors> tag
     * @access private
     */
    function _makeMirrorsXml($channelInfo)
    {
        $ret = "";
        if (!isset($channelInfo['servers']['mirror'][0])) {
            $channelInfo['servers']['mirror'] = array($channelInfo['servers']['mirror']);
        }
        foreach ($channelInfo['servers']['mirror'] as $mirror) {
            $ret .= '  <mirror host="' . $mirror['attribs']['host'] . '"';
            if (isset($mirror['attribs']['port'])) {
                $ret .= ' port="' . $mirror['attribs']['port'] . '"';
            }
            if (isset($mirror['attribs']['ssl'])) {
                $ret .= ' ssl="' . $mirror['attribs']['ssl'] . '"';
            }
            $ret .= ">\n";
            if (isset($mirror['rest'])) {
                if (isset($mirror['rest'])) {
                    $ret .= $this->_makeRestXml($mirror['rest'], '   ');
                }
                $ret .= "  </mirror>\n";
            } else {
                $ret .= "/>\n";
            }
        }
        return $ret;
    }

/**
     * Generate the <functions> tag
     * @access private
     */
    function _makeFunctionsXml($functions, $indent, $rest = false)
    {
        $ret = '';
        if (!isset($functions[0])) {
            $functions = array($functions);
        }
        foreach ($functions as $function) {
            $ret .= "$indent<function version=\"" . $function['attribs']['version'] . "\"";
            if ($rest) {
                $ret .= ' uri="' . $function['attribs']['uri'] . '"';
            }
            $ret .= ">" . $function['_content'] . "</function>\n";
        }
        return $ret;
    }

/**
     * Validation error.  Also marks the object contents as invalid
     * @param error code
     * @param array error information
     * @access private
     */
    function _validateError($code, $params = array())
    {
        $this->_stack->push($code, 'error', $params);
        $this->_isValid = false;
    }

/**
     * Validation warning.  Does not mark the object contents invalid.
     * @param error code
     * @param array error information
     * @access private
     */
    function _validateWarning($code, $params = array())
    {
        $this->_stack->push($code, 'warning', $params);
    }

/**
     * Validate parsed file.
     *
     * @access public
     * @return boolean
     */
    function validate()
    {
        $this->_isValid = true;
        $info = $this->_channelInfo;
        if (empty($info['name'])) {
            $this->_validateError(PEAR_CHANNELFILE_ERROR_NO_NAME);
        } elseif (!$this->validChannelServer($info['name'])) {
            if ($info['name'] != '__uri') {
                $this->_validateError(PEAR_CHANNELFILE_ERROR_INVALID_NAME, array('tag' => 'name',
                    'name' => $info['name']));
            }
        }
        if (empty($info['summary'])) {
            $this->_validateError(PEAR_CHANNELFILE_ERROR_NO_SUMMARY);
        } elseif (strpos(trim($info['summary']), "\n") !== false) {
            $this->_validateWarning(PEAR_CHANNELFILE_ERROR_MULTILINE_SUMMARY,
                array('summary' => $info['summary']));
        }
        if (isset($info['suggestedalias'])) {
            if (!$this->validChannelServer($info['suggestedalias'])) {
                $this->_validateError(PEAR_CHANNELFILE_ERROR_INVALID_NAME,
                    array('tag' => 'suggestedalias', 'name' =>$info['suggestedalias']));
            }
        }
        if (isset($info['localalias'])) {
            if (!$this->validChannelServer($info['localalias'])) {
                $this->_validateError(PEAR_CHANNELFILE_ERROR_INVALID_NAME,
                    array('tag' => 'localalias', 'name' =>$info['localalias']));
            }
        }
        if (isset($info['validatepackage'])) {
            if (!isset($info['validatepackage']['_content'])) {
                $this->_validateError(PEAR_CHANNELFILE_ERROR_NOVALIDATE_NAME);
            }
            if (!isset($info['validatepackage']['attribs']['version'])) {
                $content = isset($info['validatepackage']['_content']) ?
                    $info['validatepackage']['_content'] :
                    null;
                $this->_validateError(PEAR_CHANNELFILE_ERROR_NOVALIDATE_VERSION,
                    array('package' => $content));
            }
        }

if (isset($info['servers']['primary']['attribs'], $info['servers']['primary']['attribs']['port']) &&
              !is_numeric($info['servers']['primary']['attribs']['port'])) {
            $this->_validateError(PEAR_CHANNELFILE_ERROR_INVALID_PORT,
                array('port' => $info['servers']['primary']['attribs']['port']));
        }

if (isset($info['servers']['primary']['attribs'], $info['servers']['primary']['attribs']['ssl']) &&
              $info['servers']['primary']['attribs']['ssl'] != 'yes') {
            $this->_validateError(PEAR_CHANNELFILE_ERROR_INVALID_SSL,
                array('ssl' => $info['servers']['primary']['attribs']['ssl'],
                    'server' => $info['name']));
        }

if (isset($info['servers']['primary']['rest']) &&
              isset($info['servers']['primary']['rest']['baseurl'])) {
            $this->_validateFunctions('rest', $info['servers']['primary']['rest']['baseurl']);
        }
        if (isset($info['servers']['mirror'])) {
            if ($this->_channelInfo['name'] == '__uri') {
                $this->_validateError(PEAR_CHANNELFILE_URI_CANT_MIRROR);
            }
            if (!isset($info['servers']['mirror'][0])) {
                $info['servers']['mirror'] = array($info['servers']['mirror']);
            }
            foreach ($info['servers']['mirror'] as $mirror) {
                if (!isset($mirror['attribs']['host'])) {
                    $this->_validateError(PEAR_CHANNELFILE_ERROR_NO_HOST,
                      array('type' => 'mirror'));
                } elseif (!$this->validChannelServer($mirror['attribs']['host'])) {
                    $this->_validateError(PEAR_CHANNELFILE_ERROR_INVALID_HOST,
                        array('server' => $mirror['attribs']['host'], 'type' => 'mirror'));
                }
                if (isset($mirror['attribs']['ssl']) && $mirror['attribs']['ssl'] != 'yes') {
                    $this->_validateError(PEAR_CHANNELFILE_ERROR_INVALID_SSL,
                        array('ssl' => $info['ssl'], 'server' => $mirror['attribs']['host']));
                }
                if (isset($mirror['rest'])) {
                    $this->_validateFunctions('rest', $mirror['rest']['baseurl'],
                        $mirror['attribs']['host']);
                }
            }
        }
        return $this->_isValid;
    }

/**
     * @param string  rest - protocol name this function applies to
     * @param array the functions
     * @param string the name of the parent element (mirror name, for instance)
     */
    function _validateFunctions($protocol, $functions, $parent = '')
    {
        if (!isset($functions[0])) {
            $functions = array($functions);
        }

foreach ($functions as $function) {
            if (!isset($function['_content']) || empty($function['_content'])) {
                $this->_validateError(PEAR_CHANNELFILE_ERROR_NO_FUNCTIONNAME,
                    array('parent' => $parent, 'protocol' => $protocol));
            }

if ($protocol == 'rest') {
                if (!isset($function['attribs']['type']) ||
                      empty($function['attribs']['type'])) {
                    $this->_validateError(PEAR_CHANNELFILE_ERROR_NOBASEURLTYPE,
                        array('parent' => $parent, 'protocol' => $protocol));
                }
            } else {
                if (!isset($function['attribs']['version']) ||
                      empty($function['attribs']['version'])) {
                    $this->_validateError(PEAR_CHANNELFILE_ERROR_NO_FUNCTIONVERSION,
                        array('parent' => $parent, 'protocol' => $protocol));
                }
            }
        }
    }

/**
     * Test whether a string contains a valid channel server.
     * @param string $ver the package version to test
     * @return bool
     */
    function validChannelServer($server)
    {
        if ($server == '__uri') {
            return true;
        }
        return (bool) preg_match(PEAR_CHANNELS_SERVER_PREG, $server);
    }

/**
     * @return string|false
     */
    function getName()
    {
        if (isset($this->_channelInfo['name'])) {
            return $this->_channelInfo['name'];
        }

return false;
    }

/**
     * @return string|false
     */
    function getServer()
    {
        if (isset($this->_channelInfo['name'])) {
            return $this->_channelInfo['name'];
        }

return false;
    }

/**
     * @return int|80 port number to connect to
     */
    function getPort($mirror = false)
    {
        if ($mirror) {
            if ($mir = $this->getMirror($mirror)) {
                if (isset($mir['attribs']['port'])) {
                    return $mir['attribs']['port'];
                }

if ($this->getSSL($mirror)) {
                    return 443;
                }

return 80;
            }

return false;
        }

if (isset($this->_channelInfo['servers']['primary']['attribs']['port'])) {
            return $this->_channelInfo['servers']['primary']['attribs']['port'];
        }

if ($this->getSSL()) {
            return 443;
        }

return 80;
    }

/**
     * @return bool Determines whether secure sockets layer (SSL) is used to connect to this channel
     */
    function getSSL($mirror = false)
    {
        if ($mirror) {
            if ($mir = $this->getMirror($mirror)) {
                if (isset($mir['attribs']['ssl'])) {
                    return true;
                }

return false;
            }

return false;
        }

if (isset($this->_channelInfo['servers']['primary']['attribs']['ssl'])) {
            return true;
        }

return false;
    }

/**
     * @return string|false
     */
    function getSummary()
    {
        if (isset($this->_channelInfo['summary'])) {
            return $this->_channelInfo['summary'];
        }

return false;
    }

/**
     * @param string protocol type
     * @param string Mirror name
     * @return array|false
     */
    function getFunctions($protocol, $mirror = false)
    {
        if ($this->getName() == '__uri') {
            return false;
        }

$function = $protocol == 'rest' ? 'baseurl' : 'function';
        if ($mirror) {
            if ($mir = $this->getMirror($mirror)) {
                if (isset($mir[$protocol][$function])) {
                    return $mir[$protocol][$function];
                }
            }

return false;
        }

if (isset($this->_channelInfo['servers']['primary'][$protocol][$function])) {
            return $this->_channelInfo['servers']['primary'][$protocol][$function];
        }

return false;
    }

/**
     * @param string Protocol type
     * @param string Function name (null to return the
     *               first protocol of the type requested)
     * @param string Mirror name, if any
     * @return array
     */
     function getFunction($type, $name = null, $mirror = false)
     {
        $protocols = $this->getFunctions($type, $mirror);
        if (!$protocols) {
            return false;
        }

foreach ($protocols as $protocol) {
            if ($name === null) {
                return $protocol;
            }

if ($protocol['_content'] != $name) {
                continue;
            }

return $protocol;
        }

return false;
     }

/**
     * @param string protocol type
     * @param string protocol name
     * @param string version
     * @param string mirror name
     * @return boolean
     */
    function supports($type, $name = null, $mirror = false, $version = '1.0')
    {
        $protocols = $this->getFunctions($type, $mirror);
        if (!$protocols) {
            return false;
        }

foreach ($protocols as $protocol) {
            if ($protocol['attribs']['version'] != $version) {
                continue;
            }

if ($name === null) {
                return true;
            }

if ($protocol['_content'] != $name) {
                continue;
            }

return true;
        }

return false;
    }

/**
     * Determines whether a channel supports Representational State Transfer (REST) protocols
     * for retrieving channel information
     * @param string
     * @return bool
     */
    function supportsREST($mirror = false)
    {
        if ($mirror == $this->_channelInfo['name']) {
            $mirror = false;
        }

if ($mirror) {
            if ($mir = $this->getMirror($mirror)) {
                return isset($mir['rest']);
            }

return false;
        }

return isset($this->_channelInfo['servers']['primary']['rest']);
    }

/**
     * Get the URL to access a base resource.
     *
     * Hyperlinks in the returned xml will be used to retrieve the proper information
     * needed.  This allows extreme extensibility and flexibility in implementation
     * @param string Resource Type to retrieve
     */
    function getBaseURL($resourceType, $mirror = false)
    {
        if ($mirror == $this->_channelInfo['name']) {
            $mirror = false;
        }

if ($mirror) {
            $mir = $this->getMirror($mirror);
            if (!$mir) {
                return false;
            }

$rest = $mir['rest'];
        } else {
            $rest = $this->_channelInfo['servers']['primary']['rest'];
        }

if (!isset($rest['baseurl'][0])) {
            $rest['baseurl'] = array($rest['baseurl']);
        }

foreach ($rest['baseurl'] as $baseurl) {
            if (strtolower($baseurl['attribs']['type']) == strtolower($resourceType)) {
                return $baseurl['_content'];
            }
        }

return false;
    }

/**
     * Since REST does not implement RPC, provide this as a logical wrapper around
     * resetFunctions for REST
     * @param string|false mirror name, if any
     */
    function resetREST($mirror = false)
    {
        return $this->resetFunctions('rest', $mirror);
    }

/**
     * Empty all protocol definitions
     * @param string protocol type
     * @param string|false mirror name, if any
     */
    function resetFunctions($type, $mirror = false)
    {
        if ($mirror) {
            if (isset($this->_channelInfo['servers']['mirror'])) {
                $mirrors = $this->_channelInfo['servers']['mirror'];
                if (!isset($mirrors[0])) {
                    $mirrors = array($mirrors);
                }

foreach ($mirrors as $i => $mir) {
                    if ($mir['attribs']['host'] == $mirror) {
                        if (isset($this->_channelInfo['servers']['mirror'][$i][$type])) {
                            unset($this->_channelInfo['servers']['mirror'][$i][$type]);
                        }

return true;
                    }
                }

return false;
            }

return false;
        }

if (isset($this->_channelInfo['servers']['primary'][$type])) {
            unset($this->_channelInfo['servers']['primary'][$type]);
        }

return true;
    }

/**
     * Set a channel's protocols to the protocols supported by pearweb
     */
    function setDefaultPEARProtocols($version = '1.0', $mirror = false)
    {
        switch ($version) {
            case '1.0' :
                $this->resetREST($mirror);

if (!isset($this->_channelInfo['servers'])) {
                    $this->_channelInfo['servers'] = array('primary' =>
                        array('rest' => array()));
                } elseif (!isset($this->_channelInfo['servers']['primary'])) {
                    $this->_channelInfo['servers']['primary'] = array('rest' => array());
                }

return true;
            break;
            default :
                return false;
            break;
        }
    }

/**
     * @return array
     */
    function getMirrors()
    {
        if (isset($this->_channelInfo['servers']['mirror'])) {
            $mirrors = $this->_channelInfo['servers']['mirror'];
            if (!isset($mirrors[0])) {
                $mirrors = array($mirrors);
            }

return $mirrors;
        }

return array();
    }

/**
     * Get the unserialized XML representing a mirror
     * @return array|false
     */
    function getMirror($server)
    {
        foreach ($this->getMirrors() as $mirror) {
            if ($mirror['attribs']['host'] == $server) {
                return $mirror;
            }
        }

return false;
    }

/**
     * @param string
     * @return string|false
     * @error PEAR_CHANNELFILE_ERROR_NO_NAME
     * @error PEAR_CHANNELFILE_ERROR_INVALID_NAME
     */
    function setName($name)
    {
        return $this->setServer($name);
    }

/**
     * Set the socket number (port) that is used to connect to this channel
     * @param integer
     * @param string|false name of the mirror server, or false for the primary
     */
    function setPort($port, $mirror = false)
    {
        if ($mirror) {
            if (!isset($this->_channelInfo['servers']['mirror'])) {
                $this->_validateError(PEAR_CHANNELFILE_ERROR_MIRROR_NOT_FOUND,
                    array('mirror' => $mirror));
                return false;
            }

return false;
            } elseif ($this->_channelInfo['servers']['mirror']['attribs']['host'] == $mirror) {
                $this->_channelInfo['servers']['mirror']['attribs']['port'] = $port;
                $this->_isValid = false;
                return true;
            }
        }

$this->_channelInfo['servers']['primary']['attribs']['port'] = $port;
        $this->_isValid = false;
        return true;
    }

/**
     * Set the socket number (port) that is used to connect to this channel
     * @param bool Determines whether to turn on SSL support or turn it off
     * @param string|false name of the mirror server, or false for the primary
     */
    function setSSL($ssl = true, $mirror = false)
    {
        if ($mirror) {
            if (!isset($this->_channelInfo['servers']['mirror'])) {
                $this->_validateError(PEAR_CHANNELFILE_ERROR_MIRROR_NOT_FOUND,
                    array('mirror' => $mirror));
                return false;
            }

if (isset($this->_channelInfo['servers']['mirror'][0])) {
                foreach ($this->_channelInfo['servers']['mirror'] as $i => $mir) {
                    if ($mirror == $mir['attribs']['host']) {
                        if (!$ssl) {
                            if (isset($this->_channelInfo['servers']['mirror'][$i]
                                  ['attribs']['ssl'])) {
                                unset($this->_channelInfo['servers']['mirror'][$i]['attribs']['ssl']);
                            }
                        } else {
                            $this->_channelInfo['servers']['mirror'][$i]['attribs']['ssl'] = 'yes';
                        }

return true;
                    }
                }

return false;
            } elseif ($this->_channelInfo['servers']['mirror']['attribs']['host'] == $mirror) {
                if (!$ssl) {
                    if (isset($this->_channelInfo['servers']['mirror']['attribs']['ssl'])) {
                        unset($this->_channelInfo['servers']['mirror']['attribs']['ssl']);
                    }
                } else {
                    $this->_channelInfo['servers']['mirror']['attribs']['ssl'] = 'yes';
                }

$this->_isValid = false;
                return true;
            }
        }

if ($ssl) {
            $this->_channelInfo['servers']['primary']['attribs']['ssl'] = 'yes';
        } else {
            if (isset($this->_channelInfo['servers']['primary']['attribs']['ssl'])) {
                unset($this->_channelInfo['servers']['primary']['attribs']['ssl']);
            }
        }

$this->_isValid = false;
        return true;
    }

/**
     * @param string
     * @return string|false
     * @error PEAR_CHANNELFILE_ERROR_NO_SERVER
     * @error PEAR_CHANNELFILE_ERROR_INVALID_SERVER
     */
    function setServer($server, $mirror = false)
    {
        if (empty($server)) {
            $this->_validateError(PEAR_CHANNELFILE_ERROR_NO_SERVER);
            return false;
        } elseif (!$this->validChannelServer($server)) {
            $this->_validateError(PEAR_CHANNELFILE_ERROR_INVALID_NAME,
                array('tag' => 'name', 'name' => $server));
            return false;
        }

if ($mirror) {
            $found = false;
            foreach ($this->_channelInfo['servers']['mirror'] as $i => $mir) {
                if ($mirror == $mir['attribs']['host']) {
                    $found = true;
                    break;
                }
            }

if (!$found) {
                $this->_validateError(PEAR_CHANNELFILE_ERROR_MIRROR_NOT_FOUND,
                    array('mirror' => $mirror));
                return false;
            }

$this->_channelInfo['mirror'][$i]['attribs']['host'] = $server;
            return true;
        }

$this->_channelInfo['name'] = $server;
        return true;
    }

/**
     * @param string
     * @return boolean success
     * @error PEAR_CHANNELFILE_ERROR_NO_SUMMARY
     * @warning PEAR_CHANNELFILE_ERROR_MULTILINE_SUMMARY
     */
    function setSummary($summary)
    {
        if (empty($summary)) {
            $this->_validateError(PEAR_CHANNELFILE_ERROR_NO_SUMMARY);
            return false;
        } elseif (strpos(trim($summary), "\n") !== false) {
            $this->_validateWarning(PEAR_CHANNELFILE_ERROR_MULTILINE_SUMMARY,
                array('summary' => $summary));
        }

$this->_channelInfo['summary'] = $summary;
        return true;
    }

/**
     * @param string
     * @param boolean determines whether the alias is in channel.xml or local
     * @return boolean success
     */
    function setAlias($alias, $local = false)
    {
        if (!$this->validChannelServer($alias)) {
            $this->_validateError(PEAR_CHANNELFILE_ERROR_INVALID_NAME,
                array('tag' => 'suggestedalias', 'name' => $alias));
            return false;
        }

if ($local) {
            $this->_channelInfo['localalias'] = $alias;
        } else {
            $this->_channelInfo['suggestedalias'] = $alias;
        }

return true;
    }

/**
     * @return string
     */
    function getAlias()
    {
        if (isset($this->_channelInfo['localalias'])) {
            return $this->_channelInfo['localalias'];
        }
        if (isset($this->_channelInfo['suggestedalias'])) {
            return $this->_channelInfo['suggestedalias'];
        }
        if (isset($this->_channelInfo['name'])) {
            return $this->_channelInfo['name'];
        }
        return '';
    }

/**
     * Set the package validation object if it differs from PEAR's default
     * The class must be includeable via changing _ in the classname to path separator,
     * but no checking of this is made.
     * @param string|false pass in false to reset to the default packagename regex
     * @return boolean success
     */
    function setValidationPackage($validateclass, $version)
    {
        if (empty($validateclass)) {
            unset($this->_channelInfo['validatepackage']);
        }
        $this->_channelInfo['validatepackage'] = array('_content' => $validateclass);
        $this->_channelInfo['validatepackage']['attribs'] = array('version' => $version);
    }

/**
     * Add a protocol to the provides section
     * @param string protocol type
     * @param string protocol version
     * @param string protocol name, if any
     * @param string mirror name, if this is a mirror's protocol
     * @return bool
     */
    function addFunction($type, $version, $name = '', $mirror = false)
    {
        if ($mirror) {
            return $this->addMirrorFunction($mirror, $type, $version, $name);
        }

$set = array('attribs' => array('version' => $version), '_content' => $name);
        if (!isset($this->_channelInfo['servers']['primary'][$type]['function'])) {
            if (!isset($this->_channelInfo['servers'])) {
                $this->_channelInfo['servers'] = array('primary' =>
                    array($type => array()));
            } elseif (!isset($this->_channelInfo['servers']['primary'])) {
                $this->_channelInfo['servers']['primary'] = array($type => array());
            }

$this->_channelInfo['servers']['primary'][$type]['function'] = $set;
            $this->_isValid = false;
            return true;
        } elseif (!isset($this->_channelInfo['servers']['primary'][$type]['function'][0])) {
            $this->_channelInfo['servers']['primary'][$type]['function'] = array(
                $this->_channelInfo['servers']['primary'][$type]['function']);
        }

$this->_channelInfo['servers']['primary'][$type]['function'][] = $set;
        return true;
    }
    /**
     * Add a protocol to a mirror's provides section
     * @param string mirror name (server)
     * @param string protocol type
     * @param string protocol version
     * @param string protocol name, if any
     */
    function addMirrorFunction($mirror, $type, $version, $name = '')
    {
        if (!isset($this->_channelInfo['servers']['mirror'])) {
            $this->_validateError(PEAR_CHANNELFILE_ERROR_MIRROR_NOT_FOUND,
                array('mirror' => $mirror));
            return false;
        }

$setmirror = false;
        if (isset($this->_channelInfo['servers']['mirror'][0])) {
            foreach ($this->_channelInfo['servers']['mirror'] as $i => $mir) {
                if ($mirror == $mir['attribs']['host']) {
                    $setmirror = &$this->_channelInfo['servers']['mirror'][$i];
                    break;
                }
            }
        } else {
            if ($this->_channelInfo['servers']['mirror']['attribs']['host'] == $mirror) {
                $setmirror = &$this->_channelInfo['servers']['mirror'];
            }
        }

if (!$setmirror) {
            $this->_validateError(PEAR_CHANNELFILE_ERROR_MIRROR_NOT_FOUND,
                array('mirror' => $mirror));
            return false;
        }

$set = array('attribs' => array('version' => $version), '_content' => $name);
        if (!isset($setmirror[$type]['function'])) {
            $setmirror[$type]['function'] = $set;
            $this->_isValid = false;
            return true;
        } elseif (!isset($setmirror[$type]['function'][0])) {
            $setmirror[$type]['function'] = array($setmirror[$type]['function']);
        }

$setmirror[$type]['function'][] = $set;
        $this->_isValid = false;
        return true;
    }

/**
     * @param string Resource Type this url links to
     * @param string URL
     * @param string|false mirror name, if this is not a primary server REST base URL
     */
    function setBaseURL($resourceType, $url, $mirror = false)
    {
        if ($mirror) {
            if (!isset($this->_channelInfo['servers']['mirror'])) {
                $this->_validateError(PEAR_CHANNELFILE_ERROR_MIRROR_NOT_FOUND,
                    array('mirror' => $mirror));
                return false;
            }

$setmirror = false;
            if (isset($this->_channelInfo['servers']['mirror'][0])) {
                foreach ($this->_channelInfo['servers']['mirror'] as $i => $mir) {
                    if ($mirror == $mir['attribs']['host']) {
                        $setmirror = &$this->_channelInfo['servers']['mirror'][$i];
                        break;
                    }
                }
            } else {
                if ($this->_channelInfo['servers']['mirror']['attribs']['host'] == $mirror) {
                    $setmirror = &$this->_channelInfo['servers']['mirror'];
                }
            }
        } else {
            $setmirror = &$this->_channelInfo['servers']['primary'];
        }

$set = array('attribs' => array('type' => $resourceType), '_content' => $url);
        if (!isset($setmirror['rest'])) {
            $setmirror['rest'] = array();
        }

if (!isset($setmirror['rest']['baseurl'])) {
            $setmirror['rest']['baseurl'] = $set;
            $this->_isValid = false;
            return true;
        } elseif (!isset($setmirror['rest']['baseurl'][0])) {
            $setmirror['rest']['baseurl'] = array($setmirror['rest']['baseurl']);
        }

foreach ($setmirror['rest']['baseurl'] as $i => $url) {
            if ($url['attribs']['type'] == $resourceType) {
                $this->_isValid = false;
                $setmirror['rest']['baseurl'][$i] = $set;
                return true;
            }
        }

$setmirror['rest']['baseurl'][] = $set;
        $this->_isValid = false;
        return true;
    }

/**
     * @param string mirror server
     * @param int mirror http port
     * @return boolean
     */
    function addMirror($server, $port = null)
    {
        if ($this->_channelInfo['name'] == '__uri') {
            return false; // the __uri channel cannot have mirrors by definition
        }

$set = array('attribs' => array('host' => $server));
        if (is_numeric($port)) {
            $set['attribs']['port'] = $port;
        }

if (!isset($this->_channelInfo['servers']['mirror'])) {
            $this->_channelInfo['servers']['mirror'] = $set;
            return true;
        }

if (!isset($this->_channelInfo['servers']['mirror'][0])) {
            $this->_channelInfo['servers']['mirror'] =
                array($this->_channelInfo['servers']['mirror']);
        }

$this->_channelInfo['servers']['mirror'][] = $set;
        return true;
    }

/**
     * Retrieve the name of the validation package for this channel
     * @return string|false
     */
    function getValidationPackage()
    {
        if (!$this->_isValid && !$this->validate()) {
            return false;
        }

if (!isset($this->_channelInfo['validatepackage'])) {
            return array('attribs' => array('version' => 'default'),
                '_content' => 'PEAR_Validate');
        }

return $this->_channelInfo['validatepackage'];
    }

/**
     * Retrieve the object that can be used for custom validation
     * @param string|false the name of the package to validate.  If the package is
     *                     the channel validation package, PEAR_Validate is returned
     * @return PEAR_Validate|false false is returned if the validation package
     *         cannot be located
     */
    function &getValidationObject($package = false)
    {
        if (!class_exists('PEAR_Validate')) {
            require_once 'PEAR/Validate.php';
        }

if (!$this->_isValid) {
            if (!$this->validate()) {
                $a = false;
                return $a;
            }
        }

if (isset($this->_channelInfo['validatepackage'])) {
            if ($package == $this->_channelInfo['validatepackage']) {
                // channel validation packages are always validated by PEAR_Validate
                $val = new PEAR_Validate;
                return $val;
            }

if (!class_exists(str_replace('.', '_',
                  $this->_channelInfo['validatepackage']['_content']))) {
                if ($this->isIncludeable(str_replace('_', '/',
                      $this->_channelInfo['validatepackage']['_content']) . '.php')) {
                    include_once str_replace('_', '/',
                        $this->_channelInfo['validatepackage']['_content']) . '.php';
                    $vclass = str_replace('.', '_',
                        $this->_channelInfo['validatepackage']['_content']);
                    $val = new $vclass;
                } else {
                    $a = false;
                    return $a;
                }
            } else {
                $vclass = str_replace('.', '_',
                    $this->_channelInfo['validatepackage']['_content']);
                $val = new $vclass;
            }
        } else {
            $val = new PEAR_Validate;
        }

return $val;
    }

function isIncludeable($path)
    {
        $possibilities = explode(PATH_SEPARATOR, ini_get('include_path'));
        foreach ($possibilities as $dir) {
            if (file_exists($dir . DIRECTORY_SEPARATOR . $path)
                  && is_readable($dir . DIRECTORY_SEPARATOR . $path)) {
                return true;
            }
        }

return false;
    }

/**
     * This function is used by the channel updater and retrieves a value set by
     * the registry, or the current time if it has not been set
     * @return string
     */
    function lastModified()
    {
        if (isset($this->_channelInfo['_lastmodified'])) {
            return $this->_channelInfo['_lastmodified'];
        }

return time();
    }
}

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