/usr/share/php/PEAR/Downloader.php is in php-pear 5.5.9+dfsg-1ubuntu4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/**
* PEAR_Downloader, the PEAR Installer's download utility class
*
* PHP versions 4 and 5
*
* @category pear
* @package PEAR
* @author Greg Beaver <cellog@php.net>
* @author Stig Bakken <ssb@php.net>
* @author Tomas V. V. Cox <cox@idecnet.com>
* @author Martin Jansen <mj@php.net>
* @copyright 1997-2009 The Authors
* @license http://opensource.org/licenses/bsd-license.php New BSD License
* @version CVS: $Id: Downloader.php 313024 2011-07-06 19:51:24Z dufuz $
* @link http://pear.php.net/package/PEAR
* @since File available since Release 1.3.0
*/
/**
* Needed for constants, extending
*/
require_once 'PEAR/Common.php';
define('PEAR_INSTALLER_OK', 1);
define('PEAR_INSTALLER_FAILED', 0);
define('PEAR_INSTALLER_SKIPPED', -1);
define('PEAR_INSTALLER_ERROR_NO_PREF_STATE', 2);
/**
* Administration class used to download anything from the internet (PEAR Packages,
* static URLs, xml files)
*
* @category pear
* @package PEAR
* @author Greg Beaver <cellog@php.net>
* @author Stig Bakken <ssb@php.net>
* @author Tomas V. V. Cox <cox@idecnet.com>
* @author Martin Jansen <mj@php.net>
* @copyright 1997-2009 The Authors
* @license http://opensource.org/licenses/bsd-license.php New BSD License
* @version Release: 1.9.4
* @link http://pear.php.net/package/PEAR
* @since Class available since Release 1.3.0
*/
class PEAR_Downloader extends PEAR_Common
{
/**
* @var PEAR_Registry
* @access private
*/
var $_registry;
/**
* Preferred Installation State (snapshot, devel, alpha, beta, stable)
* @var string|null
* @access private
*/
var $_preferredState;
/**
* Options from command-line passed to Install.
*
* Recognized options:<br />
* - onlyreqdeps : install all required dependencies as well
* - alldeps : install all dependencies, including optional
* - installroot : base relative path to install files in
* - force : force a download even if warnings would prevent it
* - nocompress : download uncompressed tarballs
* @see PEAR_Command_Install
* @access private
* @var array
*/
var $_options;
/**
* Downloaded Packages after a call to download().
*
* Format of each entry:
*
* <code>
* array('pkg' => 'package_name', 'file' => '/path/to/local/file',
* 'info' => array() // parsed package.xml
* );
* </code>
* @access private
* @var array
*/
var $_downloadedPackages = array();
/**
* Packages slated for download.
*
* This is used to prevent downloading a package more than once should it be a dependency
* for two packages to be installed.
* Format of each entry:
*
* <pre>
* array('package_name1' => parsed package.xml, 'package_name2' => parsed package.xml,
* );
* </pre>
* @access private
* @var array
*/
var $_toDownload = array();
/**
* Array of every package installed, with names lower-cased.
*
* Format:
* <code>
* array('package1' => 0, 'package2' => 1, );
* </code>
* @var array
*/
var $_installed = array();
/**
* @var array
* @access private
*/
var $_errorStack = array();
/**
* @var boolean
* @access private
*/
var $_internalDownload = false;
/**
* Temporary variable used in sorting packages by dependency in {@link sortPkgDeps()}
* @var array
* @access private
*/
var $_packageSortTree;
/**
* Temporary directory, or configuration value where downloads will occur
* @var string
*/
var $_downloadDir;
/**
* @param PEAR_Frontend_*
* @param array
* @param PEAR_Config
*/
function PEAR_Downloader(&$ui, $options, &$config)
{
parent::PEAR_Common();
$this->_options = $options;
$this->config = &$config;
$this->_preferredState = $this->config->get('preferred_state');
$this->ui = &$ui;
if (!$this->_preferredState) {
// don't inadvertantly use a non-set preferred_state
$this->_preferredState = null;
}
if (isset($this->_options['installroot'])) {
$this->config->setInstallRoot($this->_options['installroot']);
}
$this->_registry = &$config->getRegistry();
if (isset($this->_options['alldeps']) || isset($this->_options['onlyreqdeps'])) {
$this->_installed = $this->_registry->listAllPackages();
foreach ($this->_installed as $key => $unused) {
if (!count($unused)) {
continue;
}
$strtolower = create_function('$a','return strtolower($a);');
array_walk($this->_installed[$key], $strtolower);
}
}
}
/**
* Attempt to discover a channel's remote capabilities from
* its server name
* @param string
* @return boolean
*/
function discover($channel)
{
$this->log(1, 'Attempting to discover channel "' . $channel . '"...');
PEAR::pushErrorHandling(PEAR_ERROR_RETURN);
$callback = $this->ui ? array(&$this, '_downloadCallback') : null;
if (!class_exists('System')) {
require_once 'System.php';
}
$tmpdir = $this->config->get('temp_dir');
$tmp = System::mktemp('-d -t "' . $tmpdir . '"');
$a = $this->downloadHttp('http://' . $channel . '/channel.xml', $this->ui, $tmp, $callback, false);
PEAR::popErrorHandling();
if (PEAR::isError($a)) {
// Attempt to fallback to https automatically.
PEAR::pushErrorHandling(PEAR_ERROR_RETURN);
$this->log(1, 'Attempting fallback to https instead of http on channel "' . $channel . '"...');
$a = $this->downloadHttp('https://' . $channel . '/channel.xml', $this->ui, $tmp, $callback, false);
PEAR::popErrorHandling();
if (PEAR::isError($a)) {
return false;
}
}
list($a, $lastmodified) = $a;
if (!class_exists('PEAR_ChannelFile')) {
require_once 'PEAR/ChannelFile.php';
}
$b = new PEAR_ChannelFile;
if ($b->fromXmlFile($a)) {
unlink($a);
if ($this->config->get('auto_discover')) {
$this->_registry->addChannel($b, $lastmodified);
$alias = $b->getName();
if ($b->getName() == $this->_registry->channelName($b->getAlias())) {
$alias = $b->getAlias();
}
$this->log(1, 'Auto-discovered channel "' . $channel .
'", alias "' . $alias . '", adding to registry');
}
return true;
}
unlink($a);
return false;
}
/**
* For simpler unit-testing
* @param PEAR_Downloader
* @return PEAR_Downloader_Package
*/
function &newDownloaderPackage(&$t)
{
if (!class_exists('PEAR_Downloader_Package')) {
require_once 'PEAR/Downloader/Package.php';
}
$a = &new PEAR_Downloader_Package($t);
return $a;
}
/**
* For simpler unit-testing
* @param PEAR_Config
* @param array
* @param array
* @param int
*/
function &getDependency2Object(&$c, $i, $p, $s)
{
if (!class_exists('PEAR_Dependency2')) {
require_once 'PEAR/Dependency2.php';
}
$z = &new PEAR_Dependency2($c, $i, $p, $s);
return $z;
}
function &download($params)
{
if (!count($params)) {
$a = array();
return $a;
}
if (!isset($this->_registry)) {
$this->_registry = &$this->config->getRegistry();
}
$channelschecked = array();
// convert all parameters into PEAR_Downloader_Package objects
foreach ($params as $i => $param) {
$params[$i] = &$this->newDownloaderPackage($this);
PEAR::staticPushErrorHandling(PEAR_ERROR_RETURN);
$err = $params[$i]->initialize($param);
PEAR::staticPopErrorHandling();
if (!$err) {
// skip parameters that were missed by preferred_state
continue;
}
if (PEAR::isError($err)) {
if (!isset($this->_options['soft']) && $err->getMessage() !== '') {
$this->log(0, $err->getMessage());
}
$params[$i] = false;
if (is_object($param)) {
$param = $param->getChannel() . '/' . $param->getPackage();
}
if (!isset($this->_options['soft'])) {
$this->log(2, 'Package "' . $param . '" is not valid');
}
// Message logged above in a specific verbose mode, passing null to not show up on CLI
$this->pushError(null, PEAR_INSTALLER_SKIPPED);
} else {
do {
if ($params[$i] && $params[$i]->getType() == 'local') {
// bug #7090 skip channel.xml check for local packages
break;
}
if ($params[$i] && !isset($channelschecked[$params[$i]->getChannel()]) &&
!isset($this->_options['offline'])
) {
$channelschecked[$params[$i]->getChannel()] = true;
PEAR::staticPushErrorHandling(PEAR_ERROR_RETURN);
if (!class_exists('System')) {
require_once 'System.php';
}
$curchannel = &$this->_registry->getChannel($params[$i]->getChannel());
if (PEAR::isError($curchannel)) {
PEAR::staticPopErrorHandling();
return $this->raiseError($curchannel);
}
if (PEAR::isError($dir = $this->getDownloadDir())) {
PEAR::staticPopErrorHandling();
break;
}
$mirror = $this->config->get('preferred_mirror', null, $params[$i]->getChannel());
$url = 'http://' . $mirror . '/channel.xml';
$a = $this->downloadHttp($url, $this->ui, $dir, null, $curchannel->lastModified());
PEAR::staticPopErrorHandling();
if (PEAR::isError($a) || !$a) {
// Attempt fallback to https automatically
PEAR::pushErrorHandling(PEAR_ERROR_RETURN);
$a = $this->downloadHttp('https://' . $mirror .
'/channel.xml', $this->ui, $dir, null, $curchannel->lastModified());
PEAR::staticPopErrorHandling();
if (PEAR::isError($a) || !$a) {
break;
}
}
$this->log(0, 'WARNING: channel "' . $params[$i]->getChannel() . '" has ' .
'updated its protocols, use "' . PEAR_RUNTYPE . ' channel-update ' . $params[$i]->getChannel() .
'" to update');
}
} while (false);
if ($params[$i] && !isset($this->_options['downloadonly'])) {
if (isset($this->_options['packagingroot'])) {
$checkdir = $this->_prependPath(
$this->config->get('php_dir', null, $params[$i]->getChannel()),
$this->_options['packagingroot']);
} else {
$checkdir = $this->config->get('php_dir',
null, $params[$i]->getChannel());
}
while ($checkdir && $checkdir != '/' && !file_exists($checkdir)) {
$checkdir = dirname($checkdir);
}
if ($checkdir == '.') {
$checkdir = '/';
}
if (!is_writeable($checkdir)) {
return PEAR::raiseError('Cannot install, php_dir for channel "' .
$params[$i]->getChannel() . '" is not writeable by the current user');
}
}
}
}
unset($channelschecked);
PEAR_Downloader_Package::removeDuplicates($params);
if (!count($params)) {
$a = array();
return $a;
}
if (!isset($this->_options['nodeps']) && !isset($this->_options['offline'])) {
$reverify = true;
while ($reverify) {
$reverify = false;
foreach ($params as $i => $param) {
//PHP Bug 40768 / PEAR Bug #10944
//Nested foreaches fail in PHP 5.2.1
key($params);
$ret = $params[$i]->detectDependencies($params);
if (PEAR::isError($ret)) {
$reverify = true;
$params[$i] = false;
PEAR_Downloader_Package::removeDuplicates($params);
if (!isset($this->_options['soft'])) {
$this->log(0, $ret->getMessage());
}
continue 2;
}
}
}
}
if (isset($this->_options['offline'])) {
$this->log(3, 'Skipping dependency download check, --offline specified');
}
if (!count($params)) {
$a = array();
return $a;
}
while (PEAR_Downloader_Package::mergeDependencies($params));
PEAR_Downloader_Package::removeDuplicates($params, true);
$errorparams = array();
if (PEAR_Downloader_Package::detectStupidDuplicates($params, $errorparams)) {
if (count($errorparams)) {
foreach ($errorparams as $param) {
$name = $this->_registry->parsedPackageNameToString($param->getParsedPackage());
$this->pushError('Duplicate package ' . $name . ' found', PEAR_INSTALLER_FAILED);
}
$a = array();
return $a;
}
}
PEAR_Downloader_Package::removeInstalled($params);
if (!count($params)) {
$this->pushError('No valid packages found', PEAR_INSTALLER_FAILED);
$a = array();
return $a;
}
PEAR::pushErrorHandling(PEAR_ERROR_RETURN);
$err = $this->analyzeDependencies($params);
PEAR::popErrorHandling();
if (!count($params)) {
$this->pushError('No valid packages found', PEAR_INSTALLER_FAILED);
$a = array();
return $a;
}
$ret = array();
$newparams = array();
if (isset($this->_options['pretend'])) {
return $params;
}
$somefailed = false;
foreach ($params as $i => $package) {
PEAR::staticPushErrorHandling(PEAR_ERROR_RETURN);
$pf = &$params[$i]->download();
PEAR::staticPopErrorHandling();
if (PEAR::isError($pf)) {
if (!isset($this->_options['soft'])) {
$this->log(1, $pf->getMessage());
$this->log(0, 'Error: cannot download "' .
$this->_registry->parsedPackageNameToString($package->getParsedPackage(),
true) .
'"');
}
$somefailed = true;
continue;
}
$newparams[] = &$params[$i];
$ret[] = array(
'file' => $pf->getArchiveFile(),
'info' => &$pf,
'pkg' => $pf->getPackage()
);
}
if ($somefailed) {
// remove params that did not download successfully
PEAR::pushErrorHandling(PEAR_ERROR_RETURN);
$err = $this->analyzeDependencies($newparams, true);
PEAR::popErrorHandling();
if (!count($newparams)) {
$this->pushError('Download failed', PEAR_INSTALLER_FAILED);
$a = array();
return $a;
}
}
$this->_downloadedPackages = $ret;
return $newparams;
}
/**
* @param array all packages to be installed
*/
function analyzeDependencies(&$params, $force = false)
{
if (isset($this->_options['downloadonly'])) {
return;
}
PEAR::staticPushErrorHandling(PEAR_ERROR_RETURN);
$redo = true;
$reset = $hasfailed = $failed = false;
while ($redo) {
$redo = false;
foreach ($params as $i => $param) {
$deps = $param->getDeps();
if (!$deps) {
$depchecker = &$this->getDependency2Object($this->config, $this->getOptions(),
$param->getParsedPackage(), PEAR_VALIDATE_DOWNLOADING);
$send = $param->getPackageFile();
$installcheck = $depchecker->validatePackage($send, $this, $params);
if (PEAR::isError($installcheck)) {
if (!isset($this->_options['soft'])) {
$this->log(0, $installcheck->getMessage());
}
$hasfailed = true;
$params[$i] = false;
$reset = true;
$redo = true;
$failed = false;
PEAR_Downloader_Package::removeDuplicates($params);
continue 2;
}
continue;
}
if (!$reset && $param->alreadyValidated() && !$force) {
continue;
}
if (count($deps)) {
$depchecker = &$this->getDependency2Object($this->config, $this->getOptions(),
$param->getParsedPackage(), PEAR_VALIDATE_DOWNLOADING);
$send = $param->getPackageFile();
if ($send === null) {
$send = $param->getDownloadURL();
}
$installcheck = $depchecker->validatePackage($send, $this, $params);
if (PEAR::isError($installcheck)) {
if (!isset($this->_options['soft'])) {
$this->log(0, $installcheck->getMessage());
}
$hasfailed = true;
$params[$i] = false;
$reset = true;
$redo = true;
$failed = false;
PEAR_Downloader_Package::removeDuplicates($params);
continue 2;
}
$failed = false;
if (isset($deps['required']) && is_array($deps['required'])) {
foreach ($deps['required'] as $type => $dep) {
// note: Dependency2 will never return a PEAR_Error if ignore-errors
// is specified, so soft is needed to turn off logging
if (!isset($dep[0])) {
if (PEAR::isError($e = $depchecker->{"validate{$type}Dependency"}($dep,
true, $params))) {
$failed = true;
if (!isset($this->_options['soft'])) {
$this->log(0, $e->getMessage());
}
} elseif (is_array($e) && !$param->alreadyValidated()) {
if (!isset($this->_options['soft'])) {
$this->log(0, $e[0]);
}
}
} else {
foreach ($dep as $d) {
if (PEAR::isError($e =
$depchecker->{"validate{$type}Dependency"}($d,
true, $params))) {
$failed = true;
if (!isset($this->_options['soft'])) {
$this->log(0, $e->getMessage());
}
} elseif (is_array($e) && !$param->alreadyValidated()) {
if (!isset($this->_options['soft'])) {
$this->log(0, $e[0]);
}
}
}
}
}
if (isset($deps['optional']) && is_array($deps['optional'])) {
foreach ($deps['optional'] as $type => $dep) {
if (!isset($dep[0])) {
if (PEAR::isError($e =
$depchecker->{"validate{$type}Dependency"}($dep,
false, $params))) {
$failed = true;
if (!isset($this->_options['soft'])) {
$this->log(0, $e->getMessage());
}
} elseif (is_array($e) && !$param->alreadyValidated()) {
if (!isset($this->_options['soft'])) {
$this->log(0, $e[0]);
}
}
} else {
foreach ($dep as $d) {
if (PEAR::isError($e =
$depchecker->{"validate{$type}Dependency"}($d,
false, $params))) {
$failed = true;
if (!isset($this->_options['soft'])) {
$this->log(0, $e->getMessage());
}
} elseif (is_array($e) && !$param->alreadyValidated()) {
if (!isset($this->_options['soft'])) {
$this->log(0, $e[0]);
}
}
}
}
}
}
$groupname = $param->getGroup();
if (isset($deps['group']) && $groupname) {
if (!isset($deps['group'][0])) {
$deps['group'] = array($deps['group']);
}
$found = false;
foreach ($deps['group'] as $group) {
if ($group['attribs']['name'] == $groupname) {
$found = true;
break;
}
}
if ($found) {
unset($group['attribs']);
foreach ($group as $type => $dep) {
if (!isset($dep[0])) {
if (PEAR::isError($e =
$depchecker->{"validate{$type}Dependency"}($dep,
false, $params))) {
$failed = true;
if (!isset($this->_options['soft'])) {
$this->log(0, $e->getMessage());
}
} elseif (is_array($e) && !$param->alreadyValidated()) {
if (!isset($this->_options['soft'])) {
$this->log(0, $e[0]);
}
}
} else {
foreach ($dep as $d) {
if (PEAR::isError($e =
$depchecker->{"validate{$type}Dependency"}($d,
false, $params))) {
$failed = true;
if (!isset($this->_options['soft'])) {
$this->log(0, $e->getMessage());
}
} elseif (is_array($e) && !$param->alreadyValidated()) {
if (!isset($this->_options['soft'])) {
$this->log(0, $e[0]);
}
}
}
}
}
}
}
} else {
foreach ($deps as $dep) {
if (PEAR::isError($e = $depchecker->validateDependency1($dep, $params))) {
$failed = true;
if (!isset($this->_options['soft'])) {
$this->log(0, $e->getMessage());
}
} elseif (is_array($e) && !$param->alreadyValidated()) {
if (!isset($this->_options['soft'])) {
$this->log(0, $e[0]);
}
}
}
}
$params[$i]->setValidated();
}
if ($failed) {
$hasfailed = true;
$params[$i] = false;
$reset = true;
$redo = true;
$failed = false;
PEAR_Downloader_Package::removeDuplicates($params);
continue 2;
}
}
}
PEAR::staticPopErrorHandling();
if ($hasfailed && (isset($this->_options['ignore-errors']) ||
isset($this->_options['nodeps']))) {
// this is probably not needed, but just in case
if (!isset($this->_options['soft'])) {
$this->log(0, 'WARNING: dependencies failed');
}
}
}
/**
* Retrieve the directory that downloads will happen in
* @access private
* @return string
*/
function getDownloadDir()
{
if (isset($this->_downloadDir)) {
return $this->_downloadDir;
}
$downloaddir = $this->config->get('download_dir');
if (empty($downloaddir) || (is_dir($downloaddir) && !is_writable($downloaddir))) {
if (is_dir($downloaddir) && !is_writable($downloaddir)) {
$this->log(0, 'WARNING: configuration download directory "' . $downloaddir .
'" is not writeable. Change download_dir config variable to ' .
'a writeable dir to avoid this warning');
}
if (!class_exists('System')) {
require_once 'System.php';
}
if (PEAR::isError($downloaddir = System::mktemp('-d'))) {
return $downloaddir;
}
$this->log(3, '+ tmp dir created at ' . $downloaddir);
}
if (!is_writable($downloaddir)) {
if (PEAR::isError(System::mkdir(array('-p', $downloaddir))) ||
!is_writable($downloaddir)) {
return PEAR::raiseError('download directory "' . $downloaddir .
'" is not writeable. Change download_dir config variable to ' .
'a writeable dir');
}
}
return $this->_downloadDir = $downloaddir;
}
function setDownloadDir($dir)
{
if (!@is_writable($dir)) {
if (PEAR::isError(System::mkdir(array('-p', $dir)))) {
return PEAR::raiseError('download directory "' . $dir .
'" is not writeable. Change download_dir config variable to ' .
'a writeable dir');
}
}
$this->_downloadDir = $dir;
}
function configSet($key, $value, $layer = 'user', $channel = false)
{
$this->config->set($key, $value, $layer, $channel);
$this->_preferredState = $this->config->get('preferred_state', null, $channel);
if (!$this->_preferredState) {
// don't inadvertantly use a non-set preferred_state
$this->_preferredState = null;
}
}
function setOptions($options)
{
$this->_options = $options;
}
function getOptions()
{
return $this->_options;
}
/**
* @param array output of {@link parsePackageName()}
* @access private
*/
function _getPackageDownloadUrl($parr)
{
$curchannel = $this->config->get('default_channel');
$this->configSet('default_channel', $parr['channel']);
// getDownloadURL returns an array. On error, it only contains information
// on the latest release as array(version, info). On success it contains
// array(version, info, download url string)
$state = isset($parr['state']) ? $parr['state'] : $this->config->get('preferred_state');
if (!$this->_registry->channelExists($parr['channel'])) {
do {
if ($this->config->get('auto_discover') && $this->discover($parr['channel'])) {
break;
}
$this->configSet('default_channel', $curchannel);
return PEAR::raiseError('Unknown remote channel: ' . $parr['channel']);
} while (false);
}
$chan = &$this->_registry->getChannel($parr['channel']);
if (PEAR::isError($chan)) {
return $chan;
}
PEAR::staticPushErrorHandling(PEAR_ERROR_RETURN);
$version = $this->_registry->packageInfo($parr['package'], 'version', $parr['channel']);
$stability = $this->_registry->packageInfo($parr['package'], 'stability', $parr['channel']);
// package is installed - use the installed release stability level
if (!isset($parr['state']) && $stability !== null) {
$state = $stability['release'];
}
PEAR::staticPopErrorHandling();
$base2 = false;
$preferred_mirror = $this->config->get('preferred_mirror');
if (!$chan->supportsREST($preferred_mirror) ||
(
!($base2 = $chan->getBaseURL('REST1.3', $preferred_mirror))
&&
!($base = $chan->getBaseURL('REST1.0', $preferred_mirror))
)
) {
return $this->raiseError($parr['channel'] . ' is using a unsupported protocol - This should never happen.');
}
if ($base2) {
$rest = &$this->config->getREST('1.3', $this->_options);
$base = $base2;
} else {
$rest = &$this->config->getREST('1.0', $this->_options);
}
$downloadVersion = false;
if (!isset($parr['version']) && !isset($parr['state']) && $version
&& !PEAR::isError($version)
&& !isset($this->_options['downloadonly'])
) {
$downloadVersion = $version;
}
$url = $rest->getDownloadURL($base, $parr, $state, $downloadVersion, $chan->getName());
if (PEAR::isError($url)) {
$this->configSet('default_channel', $curchannel);
return $url;
}
if ($parr['channel'] != $curchannel) {
$this->configSet('default_channel', $curchannel);
}
if (!is_array($url)) {
return $url;
}
$url['raw'] = false; // no checking is necessary for REST
if (!is_array($url['info'])) {
return PEAR::raiseError('Invalid remote dependencies retrieved from REST - ' .
'this should never happen');
}
if (!isset($this->_options['force']) &&
!isset($this->_options['downloadonly']) &&
$version &&
!PEAR::isError($version) &&
!isset($parr['group'])
) {
if (version_compare($version, $url['version'], '=')) {
return PEAR::raiseError($this->_registry->parsedPackageNameToString(
$parr, true) . ' is already installed and is the same as the ' .
'released version ' . $url['version'], -976);
}
if (version_compare($version, $url['version'], '>')) {
return PEAR::raiseError($this->_registry->parsedPackageNameToString(
$parr, true) . ' is already installed and is newer than detected ' .
'released version ' . $url['version'], -976);
}
}
if (isset($url['info']['required']) || $url['compatible']) {
require_once 'PEAR/PackageFile/v2.php';
$pf = new PEAR_PackageFile_v2;
$pf->setRawChannel($parr['channel']);
if ($url['compatible']) {
$pf->setRawCompatible($url['compatible']);
}
} else {
require_once 'PEAR/PackageFile/v1.php';
$pf = new PEAR_PackageFile_v1;
}
$pf->setRawPackage($url['package']);
$pf->setDeps($url['info']);
if ($url['compatible']) {
$pf->setCompatible($url['compatible']);
}
$pf->setRawState($url['stability']);
$url['info'] = &$pf;
if (!extension_loaded("zlib") || isset($this->_options['nocompress'])) {
$ext = '.tar';
} else {
$ext = '.tgz';
}
if (is_array($url) && isset($url['url'])) {
$url['url'] .= $ext;
}
return $url;
}
/**
* @param array dependency array
* @access private
*/
function _getDepPackageDownloadUrl($dep, $parr)
{
$xsdversion = isset($dep['rel']) ? '1.0' : '2.0';
$curchannel = $this->config->get('default_channel');
if (isset($dep['uri'])) {
$xsdversion = '2.0';
$chan = &$this->_registry->getChannel('__uri');
if (PEAR::isError($chan)) {
return $chan;
}
$version = $this->_registry->packageInfo($dep['name'], 'version', '__uri');
$this->configSet('default_channel', '__uri');
} else {
if (isset($dep['channel'])) {
$remotechannel = $dep['channel'];
} else {
$remotechannel = 'pear.php.net';
}
if (!$this->_registry->channelExists($remotechannel)) {
do {
if ($this->config->get('auto_discover')) {
if ($this->discover($remotechannel)) {
break;
}
}
return PEAR::raiseError('Unknown remote channel: ' . $remotechannel);
} while (false);
}
$chan = &$this->_registry->getChannel($remotechannel);
if (PEAR::isError($chan)) {
return $chan;
}
$version = $this->_registry->packageInfo($dep['name'], 'version', $remotechannel);
$this->configSet('default_channel', $remotechannel);
}
$state = isset($parr['state']) ? $parr['state'] : $this->config->get('preferred_state');
if (isset($parr['state']) && isset($parr['version'])) {
unset($parr['state']);
}
if (isset($dep['uri'])) {
$info = &$this->newDownloaderPackage($this);
PEAR::staticPushErrorHandling(PEAR_ERROR_RETURN);
$err = $info->initialize($dep);
PEAR::staticPopErrorHandling();
if (!$err) {
// skip parameters that were missed by preferred_state
return PEAR::raiseError('Cannot initialize dependency');
}
if (PEAR::isError($err)) {
if (!isset($this->_options['soft'])) {
$this->log(0, $err->getMessage());
}
if (is_object($info)) {
$param = $info->getChannel() . '/' . $info->getPackage();
}
return PEAR::raiseError('Package "' . $param . '" is not valid');
}
return $info;
} elseif ($chan->supportsREST($this->config->get('preferred_mirror'))
&&
(
($base2 = $chan->getBaseURL('REST1.3', $this->config->get('preferred_mirror')))
||
($base = $chan->getBaseURL('REST1.0', $this->config->get('preferred_mirror')))
)
) {
if ($base2) {
$base = $base2;
$rest = &$this->config->getREST('1.3', $this->_options);
} else {
$rest = &$this->config->getREST('1.0', $this->_options);
}
$url = $rest->getDepDownloadURL($base, $xsdversion, $dep, $parr,
$state, $version, $chan->getName());
if (PEAR::isError($url)) {
return $url;
}
if ($parr['channel'] != $curchannel) {
$this->configSet('default_channel', $curchannel);
}
if (!is_array($url)) {
return $url;
}
$url['raw'] = false; // no checking is necessary for REST
if (!is_array($url['info'])) {
return PEAR::raiseError('Invalid remote dependencies retrieved from REST - ' .
'this should never happen');
}
if (isset($url['info']['required'])) {
if (!class_exists('PEAR_PackageFile_v2')) {
require_once 'PEAR/PackageFile/v2.php';
}
$pf = new PEAR_PackageFile_v2;
$pf->setRawChannel($remotechannel);
} else {
if (!class_exists('PEAR_PackageFile_v1')) {
require_once 'PEAR/PackageFile/v1.php';
}
$pf = new PEAR_PackageFile_v1;
}
$pf->setRawPackage($url['package']);
$pf->setDeps($url['info']);
if ($url['compatible']) {
$pf->setCompatible($url['compatible']);
}
$pf->setRawState($url['stability']);
$url['info'] = &$pf;
if (!extension_loaded("zlib") || isset($this->_options['nocompress'])) {
$ext = '.tar';
} else {
$ext = '.tgz';
}
if (is_array($url) && isset($url['url'])) {
$url['url'] .= $ext;
}
return $url;
}
return $this->raiseError($parr['channel'] . ' is using a unsupported protocol - This should never happen.');
}
/**
* @deprecated in favor of _getPackageDownloadUrl
*/
function getPackageDownloadUrl($package, $version = null, $channel = false)
{
if ($version) {
$package .= "-$version";
}
if ($this === null || $this->_registry === null) {
$package = "http://pear.php.net/get/$package";
} else {
$chan = $this->_registry->getChannel($channel);
if (PEAR::isError($chan)) {
return '';
}
$package = "http://" . $chan->getServer() . "/get/$package";
}
if (!extension_loaded("zlib")) {
$package .= '?uncompress=yes';
}
return $package;
}
/**
* Retrieve a list of downloaded packages after a call to {@link download()}.
*
* Also resets the list of downloaded packages.
* @return array
*/
function getDownloadedPackages()
{
$ret = $this->_downloadedPackages;
$this->_downloadedPackages = array();
$this->_toDownload = array();
return $ret;
}
function _downloadCallback($msg, $params = null)
{
switch ($msg) {
case 'saveas':
$this->log(1, "downloading $params ...");
break;
case 'done':
$this->log(1, '...done: ' . number_format($params, 0, '', ',') . ' bytes');
break;
case 'bytesread':
static $bytes;
if (empty($bytes)) {
$bytes = 0;
}
if (!($bytes % 10240)) {
$this->log(1, '.', false);
}
$bytes += $params;
break;
case 'start':
if($params[1] == -1) {
$length = "Unknown size";
} else {
$length = number_format($params[1], 0, '', ',')." bytes";
}
$this->log(1, "Starting to download {$params[0]} ($length)");
break;
}
if (method_exists($this->ui, '_downloadCallback'))
$this->ui->_downloadCallback($msg, $params);
}
function _prependPath($path, $prepend)
{
if (strlen($prepend) > 0) {
if (OS_WINDOWS && preg_match('/^[a-z]:/i', $path)) {
if (preg_match('/^[a-z]:/i', $prepend)) {
$prepend = substr($prepend, 2);
} elseif ($prepend{0} != '\\') {
$prepend = "\\$prepend";
}
$path = substr($path, 0, 2) . $prepend . substr($path, 2);
} else {
$path = $prepend . $path;
}
}
return $path;
}
/**
* @param string
* @param integer
*/
function pushError($errmsg, $code = -1)
{
array_push($this->_errorStack, array($errmsg, $code));
}
function getErrorMsgs()
{
$msgs = array();
$errs = $this->_errorStack;
foreach ($errs as $err) {
$msgs[] = $err[0];
}
$this->_errorStack = array();
return $msgs;
}
/**
* for BC
*
* @deprecated
*/
function sortPkgDeps(&$packages, $uninstall = false)
{
$uninstall ?
$this->sortPackagesForUninstall($packages) :
$this->sortPackagesForInstall($packages);
}
/**
* Sort a list of arrays of array(downloaded packagefilename) by dependency.
*
* This uses the topological sort method from graph theory, and the
* Structures_Graph package to properly sort dependencies for installation.
* @param array an array of downloaded PEAR_Downloader_Packages
* @return array array of array(packagefilename, package.xml contents)
*/
function sortPackagesForInstall(&$packages)
{
require_once 'Structures/Graph.php';
require_once 'Structures/Graph/Node.php';
require_once 'Structures/Graph/Manipulator/TopologicalSorter.php';
$depgraph = new Structures_Graph(true);
$nodes = array();
$reg = &$this->config->getRegistry();
foreach ($packages as $i => $package) {
$pname = $reg->parsedPackageNameToString(
array(
'channel' => $package->getChannel(),
'package' => strtolower($package->getPackage()),
));
$nodes[$pname] = new Structures_Graph_Node;
$nodes[$pname]->setData($packages[$i]);
$depgraph->addNode($nodes[$pname]);
}
$deplinks = array();
foreach ($nodes as $package => $node) {
$pf = &$node->getData();
$pdeps = $pf->getDeps(true);
if (!$pdeps) {
continue;
}
if ($pf->getPackagexmlVersion() == '1.0') {
foreach ($pdeps as $dep) {
if ($dep['type'] != 'pkg' ||
(isset($dep['optional']) && $dep['optional'] == 'yes')) {
continue;
}
$dname = $reg->parsedPackageNameToString(
array(
'channel' => 'pear.php.net',
'package' => strtolower($dep['name']),
));
if (isset($nodes[$dname])) {
if (!isset($deplinks[$dname])) {
$deplinks[$dname] = array();
}
$deplinks[$dname][$package] = 1;
// dependency is in installed packages
continue;
}
$dname = $reg->parsedPackageNameToString(
array(
'channel' => 'pecl.php.net',
'package' => strtolower($dep['name']),
));
if (isset($nodes[$dname])) {
if (!isset($deplinks[$dname])) {
$deplinks[$dname] = array();
}
$deplinks[$dname][$package] = 1;
// dependency is in installed packages
continue;
}
}
} else {
// the only ordering we care about is:
// 1) subpackages must be installed before packages that depend on them
// 2) required deps must be installed before packages that depend on them
if (isset($pdeps['required']['subpackage'])) {
$t = $pdeps['required']['subpackage'];
if (!isset($t[0])) {
$t = array($t);
}
$this->_setupGraph($t, $reg, $deplinks, $nodes, $package);
}
if (isset($pdeps['group'])) {
if (!isset($pdeps['group'][0])) {
$pdeps['group'] = array($pdeps['group']);
}
foreach ($pdeps['group'] as $group) {
if (isset($group['subpackage'])) {
$t = $group['subpackage'];
if (!isset($t[0])) {
$t = array($t);
}
$this->_setupGraph($t, $reg, $deplinks, $nodes, $package);
}
}
}
if (isset($pdeps['optional']['subpackage'])) {
$t = $pdeps['optional']['subpackage'];
if (!isset($t[0])) {
$t = array($t);
}
$this->_setupGraph($t, $reg, $deplinks, $nodes, $package);
}
if (isset($pdeps['required']['package'])) {
$t = $pdeps['required']['package'];
if (!isset($t[0])) {
$t = array($t);
}
$this->_setupGraph($t, $reg, $deplinks, $nodes, $package);
}
if (isset($pdeps['group'])) {
if (!isset($pdeps['group'][0])) {
$pdeps['group'] = array($pdeps['group']);
}
foreach ($pdeps['group'] as $group) {
if (isset($group['package'])) {
$t = $group['package'];
if (!isset($t[0])) {
$t = array($t);
}
$this->_setupGraph($t, $reg, $deplinks, $nodes, $package);
}
}
}
}
}
$this->_detectDepCycle($deplinks);
foreach ($deplinks as $dependent => $parents) {
foreach ($parents as $parent => $unused) {
$nodes[$dependent]->connectTo($nodes[$parent]);
}
}
$installOrder = Structures_Graph_Manipulator_TopologicalSorter::sort($depgraph);
$ret = array();
for ($i = 0, $count = count($installOrder); $i < $count; $i++) {
foreach ($installOrder[$i] as $index => $sortedpackage) {
$data = &$installOrder[$i][$index]->getData();
$ret[] = &$nodes[$reg->parsedPackageNameToString(
array(
'channel' => $data->getChannel(),
'package' => strtolower($data->getPackage()),
))]->getData();
}
}
$packages = $ret;
return;
}
/**
* Detect recursive links between dependencies and break the cycles
*
* @param array
* @access private
*/
function _detectDepCycle(&$deplinks)
{
do {
$keepgoing = false;
foreach ($deplinks as $dep => $parents) {
foreach ($parents as $parent => $unused) {
// reset the parent cycle detector
$this->_testCycle(null, null, null);
if ($this->_testCycle($dep, $deplinks, $parent)) {
$keepgoing = true;
unset($deplinks[$dep][$parent]);
if (count($deplinks[$dep]) == 0) {
unset($deplinks[$dep]);
}
continue 3;
}
}
}
} while ($keepgoing);
}
function _testCycle($test, $deplinks, $dep)
{
static $visited = array();
if ($test === null) {
$visited = array();
return;
}
// this happens when a parent has a dep cycle on another dependency
// but the child is not part of the cycle
if (isset($visited[$dep])) {
return false;
}
$visited[$dep] = 1;
if ($test == $dep) {
return true;
}
if (isset($deplinks[$dep])) {
if (in_array($test, array_keys($deplinks[$dep]), true)) {
return true;
}
foreach ($deplinks[$dep] as $parent => $unused) {
if ($this->_testCycle($test, $deplinks, $parent)) {
return true;
}
}
}
return false;
}
/**
* Set up the dependency for installation parsing
*
* @param array $t dependency information
* @param PEAR_Registry $reg
* @param array $deplinks list of dependency links already established
* @param array $nodes all existing package nodes
* @param string $package parent package name
* @access private
*/
function _setupGraph($t, $reg, &$deplinks, &$nodes, $package)
{
foreach ($t as $dep) {
$depchannel = !isset($dep['channel']) ? '__uri': $dep['channel'];
$dname = $reg->parsedPackageNameToString(
array(
'channel' => $depchannel,
'package' => strtolower($dep['name']),
));
if (isset($nodes[$dname])) {
if (!isset($deplinks[$dname])) {
$deplinks[$dname] = array();
}
$deplinks[$dname][$package] = 1;
}
}
}
function _dependsOn($a, $b)
{
return $this->_checkDepTree(strtolower($a->getChannel()), strtolower($a->getPackage()), $b);
}
function _checkDepTree($channel, $package, $b, $checked = array())
{
$checked[$channel][$package] = true;
if (!isset($this->_depTree[$channel][$package])) {
return false;
}
if (isset($this->_depTree[$channel][$package][strtolower($b->getChannel())]
[strtolower($b->getPackage())])) {
return true;
}
foreach ($this->_depTree[$channel][$package] as $ch => $packages) {
foreach ($packages as $pa => $true) {
if ($this->_checkDepTree($ch, $pa, $b, $checked)) {
return true;
}
}
}
return false;
}
function _sortInstall($a, $b)
{
if (!$a->getDeps() && !$b->getDeps()) {
return 0; // neither package has dependencies, order is insignificant
}
if ($a->getDeps() && !$b->getDeps()) {
return 1; // $a must be installed after $b because $a has dependencies
}
if (!$a->getDeps() && $b->getDeps()) {
return -1; // $b must be installed after $a because $b has dependencies
}
// both packages have dependencies
if ($this->_dependsOn($a, $b)) {
return 1;
}
if ($this->_dependsOn($b, $a)) {
return -1;
}
return 0;
}
/**
* Download a file through HTTP. Considers suggested file name in
* Content-disposition: header and can run a callback function for
* different events. The callback will be called with two
* parameters: the callback type, and parameters. The implemented
* callback types are:
*
* 'setup' called at the very beginning, parameter is a UI object
* that should be used for all output
* 'message' the parameter is a string with an informational message
* 'saveas' may be used to save with a different file name, the
* parameter is the filename that is about to be used.
* If a 'saveas' callback returns a non-empty string,
* that file name will be used as the filename instead.
* Note that $save_dir will not be affected by this, only
* the basename of the file.
* 'start' download is starting, parameter is number of bytes
* that are expected, or -1 if unknown
* 'bytesread' parameter is the number of bytes read so far
* 'done' download is complete, parameter is the total number
* of bytes read
* 'connfailed' if the TCP/SSL connection fails, this callback is called
* with array(host,port,errno,errmsg)
* 'writefailed' if writing to disk fails, this callback is called
* with array(destfile,errmsg)
*
* If an HTTP proxy has been configured (http_proxy PEAR_Config
* setting), the proxy will be used.
*
* @param string $url the URL to download
* @param object $ui PEAR_Frontend_* instance
* @param object $config PEAR_Config instance
* @param string $save_dir directory to save file in
* @param mixed $callback function/method to call for status
* updates
* @param false|string|array $lastmodified header values to check against for caching
* use false to return the header values from this download
* @param false|array $accept Accept headers to send
* @param false|string $channel Channel to use for retrieving authentication
* @return string|array Returns the full path of the downloaded file or a PEAR
* error on failure. If the error is caused by
* socket-related errors, the error object will
* have the fsockopen error code available through
* getCode(). If caching is requested, then return the header
* values.
*
* @access public
*/
function downloadHttp($url, &$ui, $save_dir = '.', $callback = null, $lastmodified = null,
$accept = false, $channel = false)
{
static $redirect = 0;
// always reset , so we are clean case of error
$wasredirect = $redirect;
$redirect = 0;
if ($callback) {
call_user_func($callback, 'setup', array(&$ui));
}
$info = parse_url($url);
if (!isset($info['scheme']) || !in_array($info['scheme'], array('http', 'https'))) {
return PEAR::raiseError('Cannot download non-http URL "' . $url . '"');
}
if (!isset($info['host'])) {
return PEAR::raiseError('Cannot download from non-URL "' . $url . '"');
}
$host = isset($info['host']) ? $info['host'] : null;
$port = isset($info['port']) ? $info['port'] : null;
$path = isset($info['path']) ? $info['path'] : null;
if (isset($this)) {
$config = &$this->config;
} else {
$config = &PEAR_Config::singleton();
}
$proxy_host = $proxy_port = $proxy_user = $proxy_pass = '';
if ($config->get('http_proxy') &&
$proxy = parse_url($config->get('http_proxy'))) {
$proxy_host = isset($proxy['host']) ? $proxy['host'] : null;
if (isset($proxy['scheme']) && $proxy['scheme'] == 'https') {
$proxy_host = 'ssl://' . $proxy_host;
}
$proxy_port = isset($proxy['port']) ? $proxy['port'] : 8080;
$proxy_user = isset($proxy['user']) ? urldecode($proxy['user']) : null;
$proxy_pass = isset($proxy['pass']) ? urldecode($proxy['pass']) : null;
if ($callback) {
call_user_func($callback, 'message', "Using HTTP proxy $host:$port");
}
}
if (empty($port)) {
$port = (isset($info['scheme']) && $info['scheme'] == 'https') ? 443 : 80;
}
$scheme = (isset($info['scheme']) && $info['scheme'] == 'https') ? 'https' : 'http';
if ($proxy_host != '') {
$fp = @fsockopen($proxy_host, $proxy_port, $errno, $errstr);
if (!$fp) {
if ($callback) {
call_user_func($callback, 'connfailed', array($proxy_host, $proxy_port,
$errno, $errstr));
}
return PEAR::raiseError("Connection to `$proxy_host:$proxy_port' failed: $errstr", $errno);
}
if ($lastmodified === false || $lastmodified) {
$request = "GET $url HTTP/1.1\r\n";
$request .= "Host: $host\r\n";
} else {
$request = "GET $url HTTP/1.0\r\n";
$request .= "Host: $host\r\n";
}
} else {
$network_host = $host;
if (isset($info['scheme']) && $info['scheme'] == 'https') {
$network_host = 'ssl://' . $host;
}
$fp = @fsockopen($network_host, $port, $errno, $errstr);
if (!$fp) {
if ($callback) {
call_user_func($callback, 'connfailed', array($host, $port,
$errno, $errstr));
}
return PEAR::raiseError("Connection to `$host:$port' failed: $errstr", $errno);
}
if ($lastmodified === false || $lastmodified) {
$request = "GET $path HTTP/1.1\r\n";
$request .= "Host: $host\r\n";
} else {
$request = "GET $path HTTP/1.0\r\n";
$request .= "Host: $host\r\n";
}
}
$ifmodifiedsince = '';
if (is_array($lastmodified)) {
if (isset($lastmodified['Last-Modified'])) {
$ifmodifiedsince = 'If-Modified-Since: ' . $lastmodified['Last-Modified'] . "\r\n";
}
if (isset($lastmodified['ETag'])) {
$ifmodifiedsince .= "If-None-Match: $lastmodified[ETag]\r\n";
}
} else {
$ifmodifiedsince = ($lastmodified ? "If-Modified-Since: $lastmodified\r\n" : '');
}
$request .= $ifmodifiedsince .
"User-Agent: PEAR/1.9.4/PHP/" . PHP_VERSION . "\r\n";
if (isset($this)) { // only pass in authentication for non-static calls
$username = $config->get('username', null, $channel);
$password = $config->get('password', null, $channel);
if ($username && $password) {
$tmp = base64_encode("$username:$password");
$request .= "Authorization: Basic $tmp\r\n";
}
}
if ($proxy_host != '' && $proxy_user != '') {
$request .= 'Proxy-Authorization: Basic ' .
base64_encode($proxy_user . ':' . $proxy_pass) . "\r\n";
}
if ($accept) {
$request .= 'Accept: ' . implode(', ', $accept) . "\r\n";
}
$request .= "Connection: close\r\n";
$request .= "\r\n";
fwrite($fp, $request);
$headers = array();
$reply = 0;
while (trim($line = fgets($fp, 1024))) {
if (preg_match('/^([^:]+):\s+(.*)\s*\\z/', $line, $matches)) {
$headers[strtolower($matches[1])] = trim($matches[2]);
} elseif (preg_match('|^HTTP/1.[01] ([0-9]{3}) |', $line, $matches)) {
$reply = (int)$matches[1];
if ($reply == 304 && ($lastmodified || ($lastmodified === false))) {
return false;
}
if (!in_array($reply, array(200, 301, 302, 303, 305, 307))) {
return PEAR::raiseError("File $scheme://$host:$port$path not valid (received: $line)");
}
}
}
if ($reply != 200) {
if (!isset($headers['location'])) {
return PEAR::raiseError("File $scheme://$host:$port$path not valid (redirected but no location)");
}
if ($wasredirect > 4) {
return PEAR::raiseError("File $scheme://$host:$port$path not valid (redirection looped more than 5 times)");
}
$redirect = $wasredirect + 1;
return $this->downloadHttp($headers['location'],
$ui, $save_dir, $callback, $lastmodified, $accept);
}
if (isset($headers['content-disposition']) &&
preg_match('/\sfilename=\"([^;]*\S)\"\s*(;|\\z)/', $headers['content-disposition'], $matches)) {
$save_as = basename($matches[1]);
} else {
$save_as = basename($url);
}
if ($callback) {
$tmp = call_user_func($callback, 'saveas', $save_as);
if ($tmp) {
$save_as = $tmp;
}
}
$dest_file = $save_dir . DIRECTORY_SEPARATOR . $save_as;
if (is_link($dest_file)) {
return PEAR::raiseError('SECURITY ERROR: Will not write to ' . $dest_file . ' as it is symlinked to ' . readlink($dest_file) . ' - Possible symlink attack');
}
if (!$wp = @fopen($dest_file, 'wb')) {
fclose($fp);
if ($callback) {
call_user_func($callback, 'writefailed', array($dest_file, $php_errormsg));
}
return PEAR::raiseError("could not open $dest_file for writing");
}
$length = isset($headers['content-length']) ? $headers['content-length'] : -1;
$bytes = 0;
if ($callback) {
call_user_func($callback, 'start', array(basename($dest_file), $length));
}
while ($data = fread($fp, 1024)) {
$bytes += strlen($data);
if ($callback) {
call_user_func($callback, 'bytesread', $bytes);
}
if (!@fwrite($wp, $data)) {
fclose($fp);
if ($callback) {
call_user_func($callback, 'writefailed', array($dest_file, $php_errormsg));
}
return PEAR::raiseError("$dest_file: write failed ($php_errormsg)");
}
}
fclose($fp);
fclose($wp);
if ($callback) {
call_user_func($callback, 'done', $bytes);
}
if ($lastmodified === false || $lastmodified) {
if (isset($headers['etag'])) {
$lastmodified = array('ETag' => $headers['etag']);
}
if (isset($headers['last-modified'])) {
if (is_array($lastmodified)) {
$lastmodified['Last-Modified'] = $headers['last-modified'];
} else {
$lastmodified = $headers['last-modified'];
}
}
return array($dest_file, $lastmodified, $headers);
}
return $dest_file;
}
}
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