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<?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: 1.10.13
* @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();
}
}
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