mirror of
https://git.code.sf.net/p/seeddms/code
synced 2024-10-04 15:12:30 +00:00
712 lines
20 KiB
PHP
712 lines
20 KiB
PHP
<?php
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/**
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* Implementation of an extension management.
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*
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* SeedDMS can be extended by extensions. Extension usually implement
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* hook.
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*
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* @category DMS
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* @package SeedDMS
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* @license GPL 2
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* @version @version@
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* @author Uwe Steinmann <uwe@steinmann.cx>
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* @copyright 2011 Uwe Steinmann
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* @version Release: @package_version@
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*/
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/**
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* Class to represent an extension manager
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*
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* This class provides some very basic methods to manage extensions.
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*
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* @category DMS
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* @package SeedDMS
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* @author Markus Westphal, Malcolm Cowe, Uwe Steinmann <uwe@steinmann.cx>
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* @copyright 2011 Uwe Steinmann
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* @version Release: @package_version@
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*/
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class SeedDMS_Extension_Mgr {
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/**
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* @var string $extdir directory where extensions are located
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* @access protected
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*/
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protected $extdir;
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/**
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* @var string $reposurl url for fetching list of extensions in repository
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* @access protected
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*/
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protected $reposurl;
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/**
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* @var array[] $extconf configuration of all extensions
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* @access protected
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*/
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protected $extconf;
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/**
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* @var string $cachedir directory where cached extension configuration
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* is stored
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* @access protected
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*/
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protected $cachedir;
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/**
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* @var array $configcache cached result of checkExtensionByName()
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* @access protected
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*/
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protected $configcache;
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/**
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* @var string[] $errmsg list of error message from last operation
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* @access protected
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*/
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protected $errmsgs;
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/*
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* Name of json file containg available extension from repository
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*/
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const repos_list_file = 'repository.json';
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/**
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* Compare two version
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*
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* This functions compares two version in the format x.x.x with x being
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* an integer
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*
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* @param string $ver1
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* @param string $ver2
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* @return int -1 if $ver1 < $ver2, 0 if $ver1 == $ver2, 1 if $ver1 > $ver2
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*/
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static public function cmpVersion($ver1, $ver2) { /* {{{ */
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$tmp1 = explode('.', $ver1);
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$tmp2 = explode('.', $ver2);
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if(intval($tmp1[0]) < intval($tmp2[0])) {
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return -1;
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} elseif(intval($tmp1[0]) > intval($tmp2[0])) {
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return 1;
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} else {
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if(intval($tmp1[1]) < intval($tmp2[1])) {
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return -1;
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} elseif(intval($tmp1[1]) > intval($tmp2[1])) {
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return 1;
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} else {
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if(intval($tmp1[2]) < intval($tmp2[2])) {
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return -1;
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} elseif(intval($tmp1[2]) > intval($tmp2[2])) {
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return 1;
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} else {
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return 0;
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}
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}
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}
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} /* }}} */
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/**
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* Constructor of extension manager
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*
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* Reads the configuration of all extensions and creates the
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* configuration file if it does not exist and the extension dir
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* is given
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*/
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public function __construct($extdir = '', $cachedir = '', $reposurl = '', $proxyurl='', $proxyuser='', $proxypass='') { /* {{{ */
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$this->configcache = [];
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$this->cachedir = $cachedir;
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$this->extdir = $extdir;
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$this->reposurl = $reposurl;
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$this->proxyurl = $proxyurl;
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$this->proxyuser = $proxyuser;
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$this->proxypass = $proxypass;
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$this->extconf = array();
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if($extdir) {
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if(!file_exists($this->getExtensionsConfFile())) {
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$this->createExtensionConf();
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}
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if(@include($this->getExtensionsConfFile())) {
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if(!empty($EXT_CONF)) {
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$this->extconf = $EXT_CONF;
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}
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}
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}
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} /* }}} */
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public function getRepositoryUrl() { /* {{{ */
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return $this->reposurl;
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} /* }}} */
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private function getStreamContext() { /* {{{ */
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if(!$this->proxyurl)
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return null;
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$url = parse_url($this->proxyurl);
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$opts = [
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$url['scheme'] => [
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'proxy' => 'tcp://'.$url['host'].($url['port'] ? ':'.$url['port'] : ''),
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'request_fulluri' => true,
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]
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];
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if($this->proxyuser && $this->proxypass) {
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$auth = base64_encode($this->proxyurl.':'.$this->proxypass);
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$opts[$url['scheme']] = [
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'header' => [
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'Proxy-Authorization: Basic '.$auth
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]
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];
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}
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$context = stream_context_create($opts);
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return $context;
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} /* }}} */
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protected function getExtensionsConfFile() { /* {{{ */
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return $this->cachedir."/extensions.php";
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} /* }}} */
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/**
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* Get the configuration of extensions
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*
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* @return array[]
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*/
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public function getExtensionConfiguration() { /* {{{ */
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return $this->extconf;
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} /* }}} */
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/**
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* Check if extension directory is writable
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*
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* @return boolean
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*/
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public function isWritableExtDir() { /* {{{ */
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return is_writable($this->extdir);
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} /* }}} */
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/**
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* Create the cached file containing extension information
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*
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* This function will always create a file, even if no extensions
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* are installed.
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*
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* @return boolean true on success, false on error
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*/
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public function createExtensionConf() { /* {{{ */
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$extensions = self::getExtensions();
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$fp = @fopen(self::getExtensionsConfFile(), "w");
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if($fp) {
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if($extensions) {
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foreach($extensions as $_ext) {
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if(file_exists($this->extdir . "/" . $_ext . "/conf.php")) {
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$content = file_get_contents($this->extdir . "/" . $_ext . "/conf.php");
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fwrite($fp, $content);
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}
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}
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}
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fclose($fp);
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return true;
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} else {
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return false;
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}
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} /* }}} */
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/**
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* Get names of locally installed extensions by scanning the extension dir
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*
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* @return string[] list of extension names
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*/
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protected function getExtensions() { /* {{{ */
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$extensions = array();
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if(file_exists($this->extdir)) {
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$handle = opendir($this->extdir);
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while ($entry = readdir($handle) ) {
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if ($entry == ".." || $entry == ".")
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continue;
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else if (is_dir($this->extdir ."/". $entry))
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array_push($extensions, $entry);
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}
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closedir($handle);
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asort($extensions);
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}
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return $extensions;
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} /* }}} */
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static protected function Zip($source, $destination, $include_dir = false) { /* {{{ */
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if (!extension_loaded('zip') || !file_exists($source)) {
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return false;
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}
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if (file_exists($destination)) {
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unlink ($destination);
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}
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$zip = new ZipArchive();
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if (!$zip->open($destination, ZIPARCHIVE::CREATE)) {
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return false;
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}
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$source = str_replace('\\', '/', realpath($source));
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if (is_dir($source) === true) {
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$files = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($source), RecursiveIteratorIterator::SELF_FIRST);
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if ($include_dir) {
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$arr = explode("/",$source);
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$maindir = $arr[count($arr)- 1];
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$source = "";
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for ($i=0; $i < count($arr) - 1; $i++) {
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$source .= '/' . $arr[$i];
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}
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$source = substr($source, 1);
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$zip->addEmptyDir($maindir);
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}
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foreach ($files as $file) {
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$file = str_replace('\\', '/', $file);
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// Ignore "." and ".." folders
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if( in_array(substr($file, strrpos($file, '/')+1), array('.', '..')) )
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continue;
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// Ignore all files and directories starting with a '.'
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// but keep an .htaccess file
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if( !preg_match('#\\.htaccess$#', $file) && preg_match('#/\\.#', $file) )
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continue;
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$file = realpath($file);
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if (is_dir($file) === true) {
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$zip->addEmptyDir(str_replace($source . '/', '', $file . '/'));
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} else if (is_file($file) === true) {
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$zip->addFromString(str_replace($source . '/', '', $file), file_get_contents($file));
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}
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}
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} else if (is_file($source) === true) {
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$zip->addFromString(basename($source), file_get_contents($source));
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}
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return $zip->close();
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} /* }}} */
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/**
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* Create zip archive of an extension
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*
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* @param string $extname name of extension
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* @param string $version version of extension (x.y.z)
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* @return string name of temporary file with archive
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*/
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public function createArchive($extname, $version) { /* {{{ */
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if(!is_dir($this->extdir ."/". $extname))
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return false;
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$tmpfile = $this->cachedir."/".$extname."-".$version.".zip";
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if(!SeedDMS_Extension_Mgr::Zip($this->extdir."/".$extname, $tmpfile)) {
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return false;
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}
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// $cmd = "cd ".$this->extdir."/".$extname."; zip -r ".$tmpfile." .";
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// exec($cmd);
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return $tmpfile;
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} /* }}} */
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/**
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* Migrate database tables of extension if one exists
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*
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* @param string $extname name of extension
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* @param SeedDMS_Core_DMS $dms
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* @return boolean true on success, false on error
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*/
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public function migrate($extname, $settings, $dms, $logger) { /* {{{ */
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if(!isset($this->extconf[$extname]))
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return false;
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$extconf = $this->extconf[$extname];
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$ret = null;
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if(isset($extconf['class']) && isset($extconf['class']['file']) && isset($extconf['class']['name'])) {
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$classfile = $settings->_rootDir."/ext/".$extname."/".$extconf['class']['file'];
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if(file_exists($classfile)) {
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require_once($classfile);
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$obj = new $extconf['class']['name']($settings, $dms, $logger);
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if(method_exists($obj, 'migrate'))
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$ret = $obj->migrate();
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}
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}
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return $ret;
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} /* }}} */
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public function checkExtensionByDir($dir, $options = array()) { /* {{{ */
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$this->errmsgs = array();
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if(!file_exists($dir)) {
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if(!file_exists($this->extdir.'/'.$dir))
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return false;
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else
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$dir = $this->extdir.'/'.$dir;
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}
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if(!file_exists($dir."/conf.php")) {
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$this->errmsgs[] = "Missing extension configuration";
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return false;
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}
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include($dir."/conf.php");
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if(!isset($EXT_CONF)) {
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$this->errmsgs[] = "Missing \$EXT_CONF in configuration";
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return false;
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}
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$extname = key($EXT_CONF);
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if(!$extname || !preg_match('/[a-zA-Z_]*/', $extname)) {
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$this->errmsgs[] = "Extension has invalid or no name";
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return false;
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}
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$extconf = $EXT_CONF[$extname];
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if(!empty($extconf['language']['file']) && !file_exists($dir."/".$extconf['language']['file'])) {
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$this->errmsgs[] = "Missing language file";
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}
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if(!empty($extconf['class']['file']) && !file_exists($dir."/".$extconf['class']['file'])) {
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$this->errmsgs[] = "Missing class file";
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}
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if(!empty($extconf['icon']) && !file_exists($dir."/".$extconf['icon'])) {
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$this->errmsgs[] = "Missing icon file";
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}
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if($this->errmsgs)
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return false;
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return self::checkExtensionByName($extname, $extconf, $options);
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}
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/**
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* Check content of extension directory or configuration of extension
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*
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* @param string|array $dir full path to extension directory or extension name
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* or an array containing the configuration.
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* @param array $options array with options elements 'noconstraints' and 'nofiles'.
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* Set 'noconstraints' to true if
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* constraints to local seeddms installation shall not be checked. Set 'nofiles'
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* to true to turn off checking of files
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* @return boolean true if check was successful, otherwise false
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*/
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public function checkExtensionByName($extname, $extconf, $options=array()) { /* {{{ */
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if(isset($this->configcache[$extname])) {
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return $this->configcache[$extname];
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}
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$this->errmsgs = array();
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if(!isset($extconf['constraints']['depends']['seeddms'])) {
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$this->errmsgs[] = "Missing dependency on SeedDMS";
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}
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if(!isset($extconf['constraints']['depends']['php'])) {
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$this->errmsgs[] = "Missing dependency on PHP";
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}
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if(!isset($extconf['version'])) {
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$this->errmsgs[] = "Missing version information";
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}
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if(!isset($extconf['title'])) {
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$this->errmsgs[] = "Missing title";
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}
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if(!isset($extconf['author'])) {
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$this->errmsgs[] = "Missing author";
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}
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if(!isset($options['noconstraints']) || $options['noconstraints'] == false) {
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if(isset($extconf['constraints']['depends'])) {
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foreach($extconf['constraints']['depends'] as $dkey=>$dval) {
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switch($dkey) {
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case 'seeddms':
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$version = new SeedDMS_Version;
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if(is_array($dval)) {
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$fullfill = false;
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foreach($dval as $ddval) {
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$tmp = explode('-', $ddval, 2);
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if(self::cmpVersion($tmp[0], $version->version()) > 0 || ($tmp[1] && self::cmpVersion($tmp[1], $version->version()) < 0))
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; // No within version range
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else
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$fullfill = true;
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}
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if(!$fullfill)
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$this->errmsgs[] = sprintf("Incorrect SeedDMS version (needs version \"%s\")", implode('" or "', $dval));
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} elseif(is_string($dval)) {
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$tmp = explode('-', $dval, 2);
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if(self::cmpVersion($tmp[0], $version->version()) > 0 || ($tmp[1] && self::cmpVersion($tmp[1], $version->version()) < 0))
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$this->errmsgs[] = sprintf("Incorrect SeedDMS version (needs version %s)", $extconf['constraints']['depends']['seeddms']);
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}
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break;
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case 'php':
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$tmp = explode('-', $dval, 2);
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if(self::cmpVersion($tmp[0], phpversion()) > 0 || ($tmp[1] && self::cmpVersion($tmp[1], phpversion()) < 0))
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$this->errmsgs[] = sprintf("Incorrect PHP version (needs version %s)", $dval);
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break;
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case 'phpext':
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if(is_array($dval) && $dval) {
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$extlist = get_loaded_extensions();
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foreach($dval as $d) {
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if(!in_array($d, $extlist))
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$this->errmsgs[] = sprintf("Missing php extension '%s'", $d);
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}
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}
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break;
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case 'cmd':
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if(is_array($dval) && $dval) {
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foreach($dval as $d) {
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if(!commandExists($d))
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$this->errmsgs[] = sprintf("Missing command '%s'", $d);
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}
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}
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break;
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default:
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$tmp = explode('-', $dval, 2);
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if(isset($this->extconf[$dkey]['version'])) {
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if(self::cmpVersion($tmp[0], $this->extconf[$dkey]['version']) > 0 || ($tmp[1] && self::cmpVersion($tmp[1], $this->extconf[$dkey]['version']) < 0))
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$this->errmsgs[] = sprintf("Incorrect version of extension '%s' (needs version '%s' but provides '%s')", $dkey, $dval, $this->extconf[$dkey]['version']);
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} else {
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$this->errmsgs[] = sprintf("Missing extension or version for '%s'", $dkey);
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}
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break;
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}
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}
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}
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}
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if($this->errmsgs)
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$this->configcache[$extname] = false;
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else
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$this->configcache[$extname] = true;
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return $this->configcache[$extname];
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} /* }}} */
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static protected function rrmdir($dir) { /* {{{ */
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if (is_dir($dir)) {
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$objects = scandir($dir);
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foreach ($objects as $object) {
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if ($object != "." && $object != "..") {
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if (filetype($dir."/".$object) == "dir") self::rrmdir($dir."/".$object); else unlink($dir."/".$object);
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}
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}
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reset($objects);
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rmdir($dir);
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}
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} /* }}} */
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/**
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* Update an extension
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*
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* This function will replace an existing extension or add a new extension
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* The passed file has to be zipped content of the extension directory not
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* including the directory itself.
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*
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* @param string $file name of extension archive
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* @return boolean true on success, othewise false
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*/
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public function updateExtension($file) { /* {{{ */
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/* unzip the extension in a temporary directory */
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$newdir = addDirSep($this->cachedir)."ext.new";
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/* First remove a left over from a previous extension */
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if(file_exists($newdir)) {
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self::rrmdir($newdir);
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}
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if(!mkdir($newdir, 0755)) {
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$this->errmsgs[] = "Cannot create temp. extension directory";
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return false;
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}
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$zip = new ZipArchive;
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$res = $zip->open($file);
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if ($res === TRUE) {
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$zip->extractTo($newdir);
|
|
$zip->close();
|
|
} else {
|
|
$this->errmsgs[] = "Cannot open extension file";
|
|
return false;
|
|
}
|
|
// $cmd = "cd ".$newdir."; unzip ".$file;
|
|
// exec($cmd);
|
|
|
|
/* Check if extension is complete and fullfills the constraints */
|
|
if(!self::checkExtensionByDir($newdir)) {
|
|
self::rrmdir($newdir);
|
|
return false;
|
|
}
|
|
|
|
include($newdir."/conf.php");
|
|
$extname = key($EXT_CONF);
|
|
|
|
/* Create the target directory */
|
|
if(!is_dir($this->extdir)) {
|
|
if(!mkdir($this->extdir, 0755)) {
|
|
$this->errmsgs[] = "Cannot create extension directory";
|
|
self::rrmdir($newdir);
|
|
return false;
|
|
}
|
|
} elseif(is_dir($this->extdir ."/". $extname)) {
|
|
$this->rrmdir($this->extdir ."/". $extname);
|
|
}
|
|
/* Move the temp. created ext directory to the final location */
|
|
/* rename() may fail if dirs are moved from one device to another.
|
|
* See https://bugs.php.net/bug.php?id=54097
|
|
*
|
|
* exec("mv ".escapeshellarg($newdir)." ".escapeshellarg($this->extdir ."/". $extname));
|
|
*
|
|
* It's also sufficient to just copy the extracted archive to the final
|
|
* location and leave the extracted archive in place. The next time an
|
|
* extension is imported the last extracted archive will be removed.
|
|
*/
|
|
// if(!rename($newdir, $this->extdir ."/". $extname)) {
|
|
if(false === exec('mv '.escapeshellarg($newdir).' '.escapeshellarg($this->extdir."/".$extname))) {
|
|
/* If copy didn't succeed, then there is probably nothing to delete,
|
|
* but do it anyway, just to be sure not just parts of the extension
|
|
* has been copied.
|
|
*/
|
|
$this->rrmdir($this->extdir ."/". $extname);
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
} /* }}} */
|
|
|
|
/**
|
|
* Get list of extensions from cached repository index
|
|
*
|
|
* This function returns the whole repository index file separated in
|
|
* single lines. Each line is either a comment if it starts with an '#'
|
|
* or a json encoded array containing the extension configuration.
|
|
*
|
|
* Run SeedDMS_Extension_Mgr::updateExtensionList() to ensure the
|
|
* currently cached extension list file is up to date.
|
|
*
|
|
* @return string[] list of json strings or comments
|
|
*/
|
|
public function getRawExtensionList() { /* {{{ */
|
|
if(file_exists($this->cachedir."/".self::repos_list_file)) {
|
|
return file($this->cachedir."/".self::repos_list_file);
|
|
} else {
|
|
return array();
|
|
}
|
|
} /* }}} */
|
|
|
|
/**
|
|
* Get list of extensions from cached repository index
|
|
*
|
|
* This function reads the cache respository index and returns
|
|
* a list of extension configurations. Only the most recent version
|
|
* of an extension will be included.
|
|
*
|
|
* Run SeedDMS_Extension_Mgr::updateExtensionList() to ensure the
|
|
* currently cached extension list file is up to date.
|
|
*
|
|
* @return array[] list of extension configurations
|
|
*/
|
|
public function getExtensionList() { /* {{{ */
|
|
$list = self::getRawExtensionList();
|
|
$result = array();
|
|
$vcache = array(); // keep highest version of extension
|
|
foreach($list as $e) {
|
|
if($e[0] != '#' && trim($e)) {
|
|
if($re = json_decode($e, true)) {
|
|
if(!isset($result[$re['name']])) {
|
|
$result[$re['name']] = $re;
|
|
$vcache[$re['name']] = $re['version'];
|
|
} elseif(self::cmpVersion($re['version'], $vcache[$re['name']]) > 0) {
|
|
$result[$re['name']] = $re;
|
|
$vcache[$re['name']] = $re['version'];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return $result;
|
|
} /* }}} */
|
|
|
|
/**
|
|
* Get list of version of an extension from cached repository index
|
|
*
|
|
* This function reads the cache respository index and returns
|
|
* a list of extension configurations. Only those extensions will
|
|
* be included which maches the given name.
|
|
*
|
|
* Run SeedDMS_Extension_Mgr::updateExtensionList() to ensure the
|
|
* currently cached extension list file is up to date.
|
|
*
|
|
* @return array[] list of extension configurations
|
|
*/
|
|
public function getExtensionListByName($extname) { /* {{{ */
|
|
$list = self::getRawExtensionList();
|
|
$result = array();
|
|
foreach($list as $e) {
|
|
if($e[0] != '#') {
|
|
$re = json_decode($e, true);
|
|
if($re['name'] == $extname) {
|
|
$result[$re['version']] = $re;
|
|
}
|
|
}
|
|
}
|
|
uksort($result, function($a, $b){return SeedDMS_Extension_Mgr::cmpVersion($b, $a);});
|
|
return $result;
|
|
} /* }}} */
|
|
|
|
/**
|
|
* Import list of extension from repository
|
|
*
|
|
* @param boolean $force force download even if file already exists
|
|
*/
|
|
public function updateExtensionList($version='', $force=false) { /* {{{ */
|
|
if($this->reposurl) {
|
|
if(!file_exists($this->cachedir."/".self::repos_list_file) || $force) {
|
|
if(false !== ($file = @file_get_contents($this->reposurl.($version ? '?seeddms_version='.$version : ''), false, $this->getStreamContext()))) {
|
|
if(is_array($http_response_header)) {
|
|
$parts=explode(' ',$http_response_header[0]);
|
|
if(count($parts)>1) //HTTP/1.0 <code> <text>
|
|
if(intval($parts[1]) != 200) {
|
|
$this->errmsgs[] = 'Getting extension list returned http code ('.$parts[1].')';
|
|
return false;
|
|
}
|
|
}
|
|
if(!$file) {
|
|
$this->errmsgs[] = 'Extension list is empty';
|
|
return false;
|
|
}
|
|
file_put_contents($this->cachedir."/".self::repos_list_file, $file);
|
|
} else {
|
|
$this->errmsgs[] = 'Could not fetch extension list';
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
} /* }}} */
|
|
|
|
/**
|
|
* Download an extension from the repository
|
|
*
|
|
* @param string $file filename of extension
|
|
*/
|
|
public function getExtensionFromRepository($file) { /* {{{ */
|
|
$content = file_get_contents($this->reposurl."/".$file, false, $this->getStreamContext());
|
|
$tmpfile = tempnam(sys_get_temp_dir(), '');
|
|
file_put_contents($tmpfile, $content);
|
|
return $tmpfile;
|
|
} /* }}} */
|
|
|
|
/**
|
|
* Return last error message
|
|
*
|
|
* @return string
|
|
*/
|
|
public function getErrorMsg() { /* {{{ */
|
|
if($this->errmsgs)
|
|
return $this->errmsgs[0];
|
|
else
|
|
return '';
|
|
} /* }}} */
|
|
|
|
/**
|
|
* Return all error messages
|
|
*
|
|
* @return string[]
|
|
*/
|
|
public function getErrorMsgs() { /* {{{ */
|
|
return $this->errmsgs;
|
|
} /* }}} */
|
|
}
|