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- <?php
- //
- // +----------------------------------------------------------------------+
- // | PHP version 4.0 |
- // +----------------------------------------------------------------------+
- // | Copyright (c) 1997, 1998, 1999, 2000 The PHP Group |
- // +----------------------------------------------------------------------+
- // | This source file is subject to version 2.02 of the PHP license, |
- // | that is bundled with this package in the file LICENSE, and is |
- // | available at through the world-wide-web at |
- // | http://www.php.net/license/2_02.txt. |
- // | If you did not receive a copy of the PHP license and are unable to |
- // | obtain it through the world-wide-web, please send a note to |
- // | license@php.net so we can mail you a copy immediately. |
- // +----------------------------------------------------------------------+
- // | Authors: Stig Bakken <ssb@fast.no> |
- // | |
- // +----------------------------------------------------------------------+
- //
-
- require_once "PEAR.php";
-
- /**
- * Administration class used to install PEAR packages and maintain the
- * class definition cache.
- *
- * @since PHP 4.0.2
- * @author Stig Bakken <ssb@fast.no>
- */
- class PEAR_Installer extends PEAR {
-
- // {{{ properties
-
- /** stack of elements, gives some sort of XML context */
- var $element_stack;
-
- /** name of currently parsed XML element */
- var $current_element;
-
- /** assoc with information about the package */
- var $pkginfo = array();
-
- /** name of the package directory, for example Foo-1.0 */
- var $pkgdir;
-
- /** directory where PHP code files go */
- var $pear_phpdir = PEAR_INSTALL_DIR;
-
- /** directory where PHP extension files go */
- var $pear_extdir = PEAR_EXTENSION_DIR;
-
- /** directory where documentation goes */
- var $pear_docdir = '';
-
- /** directory where the package wants to put files, relative
- * to one of the three previous dirs
- */
- var $destdir = '';
-
- /** debug mode (boolean) */
- var $debug = false;
-
- /** class loading cache */
- var $cache = array();
-
- /** temporary directory */
- var $tmpdir;
-
- /** file pointer for cache file if open */
- var $cache_fp;
-
- // }}}
-
- // {{{ constructor
-
- function PEAR_Installer() {
- $this->PEAR();
- $this->cacheLoad("$this->pear_phpdir/.cache");
- }
-
- // }}}
- // {{{ destructor
-
- function _PEAR_Installer() {
- $this->_PEAR();
- if ($this->tmpdir && is_dir($this->tmpdir)) {
- system("rm -rf $this->tmpdir");
- }
- if ($this->cache_fp && is_resource($this->cache_fp)) {
- flock($this->cache_fp, LOCK_UN);
- fclose($this->cache_fp);
- }
- $this->tmpdir = null;
- $this->cache_fp = null;
- }
-
- // }}}
-
- // {{{ cacheLock()
-
- function cacheLock() {
- $fp = $this->cache_fp;
- if (!is_resource($fp)) {
- $this->cache_fp = $fp = fopen($this->cache_file, "r");
- }
- return flock($fp, LOCK_EX);
- }
-
- // }}}
- // {{{ cacheUnlock()
-
- function cacheUnlock() {
- $fp = $this->cache_fp;
- if (!is_resource($fp)) {
- $this->cache_fp = $fp = fopen($this->cache_file, "r");
- $doclose = true;
- }
- $ret = flock($fp, LOCK_EX);
- if ($doclose) {
- fclose($fp);
- }
- return $ret;
- }
-
- // }}}
- // {{{ cacheLoad()
-
- function cacheLoad($file) {
- $this->cache_file = $file;
- if (!file_exists($file)) {
- touch($file);
- }
- $fp = $this->cache_fp = fopen($file, "r");
- $this->cacheLock();
- while ($line = fgets($fp, 2048)) {
- list($type, $name, $file) = explode(" ", trim($line));
- $this->cache[$type][$name] = $file;
- }
- }
-
- // }}}
- // {{{ cacheSave()
-
- function cacheSave() {
- $fp = $this->cache_fp;
- $wfp = fopen($this->cache_file, "w");
- if (!$wfp) {
- return false;
- }
- if (is_resource($fp)) {
- fclose($fp);
- }
- $this->cache_fp = $fp = $wfp;
- reset($this->cache);
- while (list($type, $entry) = each($this->cache)) {
- reset($entry);
- while (list($name, $file) = each($entry)) {
- fwrite($fp, "$type $name $file\n");
- }
- }
- fclose($fp);
- $this->cache_fp = $fp = null;
- }
-
- // }}}
- // {{{ cacheUpdateFrom()
-
- function cacheUpdateFrom($file) {
- $new = $this->classesDeclaredBy($file);
- reset($new);
- while (list($i, $name) = each($new)) {
- $this->cache['class'][$name] = $file;
- }
- }
-
- // }}}
-
- // {{{ install()
-
- /**
- * Installs the files within the package file specified.
- *
- * @param $pkgfile path to the package file
- *
- * @return bool true if successful, false if not
- */
- function install($pkgfile) {
- if (!file_exists($pkgfile)) {
- return new PEAR_Installer_Error("No such file: $pkgfile");
- }
-
- $fp = popen("gzip -dc $pkgfile | tar -tf -", "r");
- if (!$fp) {
- return new PEAR_Installer_Error("Unable to examine $pkgfile (gzip or tar failed)\n");
- }
- while ($line = fgets($fp, 4096)) {
- $line = rtrim($line);
- if (preg_match('!^[^/]+/package.xml$!', $line)) {
- if ($descfile) {
- return new PEAR_Installer_Error("Invalid package: multiple package.xml files at depth one!\n");
- }
- $descfile = $line;
- }
- }
- pclose($fp);
-
- if (!$descfile) {
- return new PEAR_Installer_Error("Invalid package: no package.xml file found!\n");
- }
-
- $this->tmpdir = tempnam("/tmp", "pear");
- if (!mkdir($this->tmpdir, 0755)) {
- return new PEAR_Installer_Error("Unable to create temporary directory $this->tmpdir.\n");
- }
-
- $pwd = trim(`pwd`);
-
- if (substr($pkgfile, 0, 1) == "/") {
- $pkgfilepath = $pkgfile;
- } else {
- $pkgfilepath = $pwd.'/'.$pkgfile;
- }
-
- if (!chdir($this->tmpdir)) {
- return new PEAR_Installer_Error("Unable to chdir to $this->tmpdir.\n");
- }
-
- system("gzip -dc $pkgfilepath | tar -xf -");
-
- if (!file_exists($descfile)) {
- return new PEAR_Installer_Error("Huh? No package.xml file after extracting the archive.\n");
- }
-
- $this->pkgdir = dirname($descfile);
-
- $fp = fopen($descfile, "r");
- $xp = xml_parser_create();
- if (!$xp) {
- return new PEAR_Installer_Error("Unable to create XML parser.\n");
- }
- xml_set_object($xp, &$this);
- xml_set_element_handler($xp, "start_handler", "end_handler");
- xml_set_character_data_handler($xp, "char_handler");
- xml_parser_set_option($xp, XML_OPTION_CASE_FOLDING, false);
-
- $this->element_stack = array();
- $this->pkginfo = array();
- $this->current_element = false;
- $destdir = '';
-
- while ($data = fread($fp, 2048)) {
- if (!xml_parse($xp, $data, feof($fp))) {
- $err = new PEAR_Installer_Error(sprintf("XML error: %s at line %d",
- xml_error_string(xml_get_error_code($xp)),
- xml_get_current_line_number($xp)));
- xml_parser_free($xp);
- return $err;
- }
- }
-
- xml_parser_free($xp);
-
- return true;
- }
-
- // }}}
- // {{{ start_handler()
-
- function start_handler($xp, $name, $attribs) {
- array_push($this->element_stack, $name);
- $this->current_element = $name;
- switch ($name) {
- case "Package":
- if (strtolower($attribs["Type"]) != "binary") {
- return new PEAR_Installer_Error("Invalid package: only binary packages supported yet.\n");
- }
- $this->pkginfo['pkgtype'] = strtolower($attribs["Type"]);
- break;
- }
- }
-
- // }}}
- // {{{ end_handler()
-
- function end_handler($xp, $name) {
- array_pop($this->element_stack);
- $this->current_element = $this->element_stack[sizeof($this->element_stack)-1];
- }
-
- // }}}
- // {{{ char_handler()
-
- function char_handler($xp, $data) {
- switch ($this->current_element) {
- case "DestDir":
- $this->destdir = trim($data);
- if (substr($this->destdir, 0, 1) == "/") {
- $this->destdir = substr($this->destdir, 1);
- }
- break;
- case "Dir":
- if (!$this->pear_phpdir) {
- break;
- }
- $dir = trim($data);
- $d = "$this->pear_phpdir/$this->destdir/$dir";
- if (is_file($d)) {
- print "Error: wanted to create the directory $d\n";
- print " but it was already a file.\n";
- break;
- }
- if (is_dir($d)) {
- break;
- }
- if (!mkdir($d, 0755)) {
- print "Error: could not mkdir $d\n";
- break;
- }
- if ($this->debug) print "[debug] created directory $d\n";
- break;
- case "File":
- if (!$this->pear_phpdir) {
- break;
- }
- $file = trim($data);
- $d = "$this->pear_phpdir/$this->destdir";
- if (!copy("$this->pkgdir/$file", "$d/$file")) {
- print "Error: failed to copy $this->pkgdir/$file to $d\n";
- break;
- }
- $this->cacheUpdateFrom("$d/$file");
- if ($this->debug) print "[debug] installed $d/$file\n";
- break;
- case "ExtDir":
- if (!$this->pear_extdir) {
- break;
- }
- $dir = trim($data);
- $d = "$this->pear_extdir/$this->destdir/$dir";
- if (is_file($d)) {
- print "Error: wanted to create the directory $d\n";
- print " but it was already a file.\n";
- break;
- }
- if (is_dir($d)) {
- continue 2;
- }
- if (!mkdir($d, 0755)) {
- print "Error: could not mkdir $d\n";
- break;
- }
- if ($this->debug) print "[debug] created directory $d\n";
- break;
- case "ExtFile":
- if (!$this->pear_extdir) {
- break;
- }
- $file = trim($data);
- $d = "$this->pear_extdir/$this->destdir";
- if (!copy("$this->pkgdir/$file", "$d/$file")) {
- print "Error: failed to copy $this->pkgdir/$file to $d\n";
- break;
- }
- if ($this->debug) print "[debug] installed $d/$file\n";
- break;
- case "DocDir":
- if (!$this->pear_docdir) {
- break;
- }
- $dir = trim($data);
- $d = "$this->pear_docdir/$this->destdir/$dir";
- if (is_file($d)) {
- print "Error: wanted to create the directory $d\n";
- print " but it was already a file.\n";
- break;
- }
- if (is_dir($d)) {
- break;
- }
- if (!mkdir($d, 0755)) {
- print "Error: could not mkdir $d\n";
- break;
- }
- if ($this->debug) print "[debug] created directory $d\n";
- break;
- case "DocFile":
- if (!$this->pear_docdir) {
- break;
- }
- $file = trim($data);
- $d = "$this->pear_docdir/$this->destdir";
- if (!copy("$this->pkgdir/$file", "$d/$file")) {
- print "Error: failed to copy $this->pkgdir/$file to $d\n";
- break;
- }
- if ($this->debug) {
- print "[debug] installed $d/$file\n";
- }
- break;
- }
- }
-
- // }}}
-
- // {{{ classesDeclaredBy()
-
- /**
- * Find out which new classes are defined by a file.
- *
- * @param $file file name passed to "include"
- *
- * @return array classes that were defined
- */
- function classesDeclaredBy($file) {
- $before = get_declared_classes();
- include($file);
- $after = get_declared_classes();
- // using array_slice to renumber array
- $diff = array_slice(array_diff($after, $before), 0);
- return $diff;
- }
-
- // }}}
-
- // {{{ lockDir()
-
- /**
- * Uses advisory locking (flock) to temporarily claim $dir as its
- * own.
- *
- * @param $dir the directory to lock
- *
- * @return bool true if successful, false if not
- */
- function lockDir($dir) {
- $lockfile = "$dir/.lock";
- if (!file_exists($lockfile)) {
- if (!touch($lockfile)) {
- // could not create lockfile!
- return false;
- }
- }
- $fp = fopen($lockfile, "r");
- if (!flock($fp, LOCK_EX)) {
- // could not create lock!
- return false;
- }
- return true;
- }
-
- // }}}
- }
-
- class PEAR_Installer_Error extends PEAR_Error {
- // {{{ constructor
-
- function PEAR_Installer_Error($msg) {
- $this->PEAR_Error($msg, 0, PEAR_ERROR_DIE);
- }
-
- // }}}
- }
-
- ?>
-