pfSense

<?php

/****h* pfSense/pkg-utils

 * NAME

 *   pkg-utils.inc - Package subsystem

 * DESCRIPTION

 *   This file contains various functions used by the pfSense package system.

 * HISTORY

 *   $Id$

 ******

 *

 * Copyright (C) 2005-2006 Colin Smith (ethethlay@gmail.com)

 * All rights reserved.

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are met:

 *

 * 1. Redistributions of source code must retain the above copyright notice,

 * this list of conditions and the following disclaimer.

 *

 * 2. Redistributions in binary form must reproduce the above copyright

 * notice, this list of conditions and the following disclaimer in the

 * documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,

 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY

 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE

 * AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,

 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

 * RISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 *

 */

/*

	pfSense_BUILDER_BINARIES:	/usr/bin/cd	/usr/bin/tar	/bin/cat	/usr/sbin/fifolog_create	/bin/chmod

	pfSense_BUILDER_BINARIES:	/usr/bin/killall	/usr/sbin/pkg_info	/usr/sbin/pkg_delete	/bin/rm	/bin/ls

	pfSense_BUILDER_BINARIES:	/sbin/pfctl

	pfSense_MODULE:	pkg

*/

require_once("xmlrpc.inc");

if(file_exists("/cf/conf/use_xmlreader"))

	require_once("xmlreader.inc");

else

	require_once("xmlparse.inc");

require_once("service-utils.inc");

require_once("pfsense-utils.inc");

require_once("globals.inc");

if(!function_exists("update_status")) {

	function update_status($status) {

		echo $status . "\n";

	}

}

if(!function_exists("update_output_window")) {

	function update_output_window($status) {

		echo $status . "\n";

	}

}

safe_mkdir("/var/db/pkg");

$g['platform'] = trim(file_get_contents("/etc/platform"));

if($g['platform'] == "pfSense") {

	safe_mkdir("/usr/local/pkg");

	safe_mkdir("/usr/local/pkg/pf");

} else {

	if(!is_dir("/usr/local/pkg") or !is_dir("/usr/local/pkg/pf")) {

	conf_mount_rw();

	safe_mkdir("/usr/local/pkg");

	safe_mkdir("/usr/local/pkg/pf");	

	conf_mount_ro();

	}

}

$version = split("-", trim(file_get_contents("/etc/version")));

$ver = split("\.", $version[0]);

$g['version'] = intval($ver[1]);

/****f* pkg-utils/remove_package

 * NAME

 *   remove_package - Removes package from FreeBSD if it exists

 * INPUTS

 *   $packagestring	- name/string to check for

 * RESULT

 *   none

 * NOTES

 *   

 ******/

function remove_freebsd_package($packagestring) {

	$todel = substr(reverse_strrchr($packagestring, "."), 0, -1);

	exec("echo y | /usr/sbin/pkg_delete -x {$todel}");

}

/****f* pkg-utils/is_package_installed

 * NAME

 *   is_package_installed - Check whether a package is installed.

 * INPUTS

 *   $packagename	- name of the package to check

 * RESULT

 *   boolean	- true if the package is installed, false otherwise

 * NOTES

 *   This function is deprecated - get_pkg_id() can already check for installation.

 ******/

function is_package_installed($packagename) {

	$pkg = get_pkg_id($packagename);

	if($pkg == -1) return false;

	return true;

}

/****f* pkg-utils/get_pkg_id

 * NAME

 *   get_pkg_id - Find a package's numeric ID.

 * INPUTS

 *   $pkg_name	- name of the package to check

 * RESULT

 *   integer    - -1 if package is not found, >-1 otherwise

 ******/

function get_pkg_id($pkg_name) {

	global $config;

	if(is_array($config['installedpackages']['package'])) {

		$i = 0;

		foreach($config['installedpackages']['package'] as $pkg) {

			if($pkg['name'] == $pkg_name) return $i;

			$i++;

		}

	}

	return -1;

}

/****f* pkg-utils/get_pkg_info

 * NAME

 *   get_pkg_info - Retrive package information from pfsense.com.

 * INPUTS

 *   $pkgs - 'all' to retrive all packages, an array containing package names otherwise

 *   $info - 'all' to retrive all information, an array containing keys otherwise

 * RESULT

 *   $raw_versions - Array containing retrieved information, indexed by package name.

 ******/

function get_pkg_info($pkgs = 'all', $info = 'all') {

	global $g;

	$freebsd_version = str_replace("\n", "", `uname -r | cut -d'-' -f1 | cut -d'.' -f1`);

	$freebsd_machine = str_replace("\n", "", `uname -m`);

	$params = array(

		"pkg" => $pkgs, 

		"info" => $info, 

		"freebsd_version" => $freebsd_version,

		"freebsd_machine" => $freebsd_machine

	);

	$resp = call_pfsense_method('pfsense.get_pkgs', $params, 10);

	return $resp ? $resp : array();

}

function get_pkg_sizes($pkgs = 'all') {

	global $g;

	$params = array("pkg" => $pkgs);

	$msg = new XML_RPC_Message('pfsense.get_pkg_sizes', array(php_value_to_xmlrpc($params)));

	$xmlrpc_base_url = isset($config['system']['altpkgrepo']['enable']) ? $config['system']['altpkgrepo']['xmlrpcbaseurl'] : $g['xmlrpcbaseurl'];

	$cli = new XML_RPC_Client($g['xmlrpcpath'], $xmlrpc_base_url);

	$resp = $cli->send($msg, 10);

	if($resp and !$resp->faultCode()) {

		$raw_versions = $resp->value();

		return xmlrpc_value_to_php($raw_versions);

	} else {

		return array();

	}

}

/*

 * resync_all_package_configs() Force packages to setup their configuration and rc.d files.

 * This function may also print output to the terminal indicating progress.

 */

function resync_all_package_configs($show_message = false) {

	global $config, $restart_sync, $pkg_interface;

	$i = 0;

	log_error("Resyncing configuration for all packages.");

	if(!$config['installedpackages']['package']) return;

	if($show_message == true) print "Syncing packages:";

	foreach($config['installedpackages']['package'] as $package) {

		if (empty($package['name']))

			continue;

		if($show_message == true) print " " . $package['name'];

		get_pkg_depends($package['name'], "all");

		stop_service($package['name']);

		sync_package($i, true, true);

		if($restart_sync == true) {

			$restart_sync = false;

			if($pkg_interface == "console") 

				echo "\nSyncing packages:";

		}

		$i++;

	}

	if($show_message == true) print ".\n";

}

/*

 * is_freebsd_pkg_installed() - Check /var/db/pkg to determine whether or not a FreeBSD

 *				package is installed.

 */

function is_freebsd_pkg_installed($pkg) {

	global $g;

	if(in_array($pkg, return_dir_as_array("{$g['vardb_path']}/pkg")))

		return true;

	return false;

}

/*

 * get_pkg_depends($pkg_name, $filetype = ".xml", $format = "files", return_nosync = 1):  Return a package's dependencies.

 *

 * $filetype = "all" || ".xml", ".tgz", etc.

 * $format = "files" (full filenames) || "names" (stripped / parsed depend names)

 * $return_nosync = 1 (return depends that have nosync set) | 0 (ignore packages with nosync)

 *

 */

function get_pkg_depends($pkg_name, $filetype = ".xml", $format = "files", $return_nosync = 1) {

	global $config;

	require_once("notices.inc");

	$pkg_id = get_pkg_id($pkg_name);

	if(!is_numeric($pkg_name)) {

		if($pkg_id == -1) return -1; // This package doesn't really exist - exit the function.

	} else {

		if(!isset($config['installedpackages']['package'][$pkg_id])) return; // No package belongs to the pkg_id passed to this function.

	}

	$package = $config['installedpackages']['package'][$pkg_id];

	if(!file_exists("/usr/local/pkg/" . $package['configurationfile'])) {

		log_error("The {$package['name']} package is missing required dependencies and must be reinstalled." . $package['configurationfile']);

		install_package($package['name']);

		uninstall_package_from_name($package['name']);

		install_package($package['name']);

		return;

	}

	$pkg_xml = parse_xml_config_pkg("/usr/local/pkg/" . $package['configurationfile'], "packagegui");

	if($pkg_xml['additional_files_needed'] != "") {

		foreach($pkg_xml['additional_files_needed'] as $item) {

			if (($return_nosync == 0) && (isset($item['nosync']))) continue; // Do not return depends with nosync set if not required.

			$depend_file = substr(strrchr($item['item']['0'], '/'),1); // Strip URLs down to filenames.

			$depend_name = substr(substr($depend_file,0,strpos($depend_file,".")+1),0,-1); // Strip filename down to dependency name.

			if (($filetype != "all") && (!preg_match("/{$filetype}/i", $depend_file))) continue;

			if ($item['prefix'] != "") {

				$prefix = $item['prefix'];

			} else {

				$prefix = "/usr/local/pkg/";

			}

			if(!file_exists($prefix . $depend_file))

				log_error("The {$package['name']} package is missing required dependencies and must be reinstalled.");

			switch ($format) {

				case "files":

				$depends[] = $depend_file;

			break;

            			case "names":

                		switch ($filetype) {

				case "all":

				if(preg_match("/\.xml/i", $depend_file)) {

					$depend_xml = parse_xml_config_pkg("/usr/local/pkg/" . $depend_file, "packagegui");

					$depends[] = $depend_xml['name'];

					break;

				} else {

					$depends[] = $depend_name; // If this dependency isn't package XML, use the stripped filename.

				break;

				}

				case ".xml":

				$depend_xml = parse_xml_config_pkg("/usr/local/pkg/" . $depend_file, "packagegui");

				$depends[] = $depend_xml['name'];

				break;

				default:

				$depends[] = $depend_name; // If we aren't looking for XML, use the stripped filename (it's all we have).

				break;

				}

			}

		}

		return $depends;

	}

}

function uninstall_package_from_name($pkg_name) {

	global $config;

	$id = get_pkg_id($pkg_name);

	$pkg_depends =& $config['installedpackages']['package'][$id]['depends_on_package'];

	delete_package($pkg_depends[0], $pkg_name);

	if (is_array($pkg_depends)) {

		foreach ($pkg_depends as $pkg_depend)

			remove_freebsd_package($pkg_depend);

	}

	delete_package_xml($pkg_name);

}

function force_remove_package($pkg_name) {

	global $config;

	delete_package_xml($pkg_name);

}

/*

 * sync_package($pkg_name, $sync_depends = true, $show_message = false) Force a package to setup its configuration and rc.d files.

 */

function sync_package($pkg_name, $sync_depends = true, $show_message = false) {

	global $config;

	require_once("notices.inc");

	if(!$config['installedpackages']['package']) return;

	if(!is_numeric($pkg_name)) {

		$pkg_id = get_pkg_id($pkg_name);

		if($pkg_id == -1) return -1; // This package doesn't really exist - exit the function.

	} else {

		$pkg_id = $pkg_name;

		if(!isset($config['installedpackages']['package'][$pkg_id]))

		return;  // No package belongs to the pkg_id passed to this function.

	}

        if (is_array($config['installedpackages']['package'][$pkg_id]))

			$package = $config['installedpackages']['package'][$pkg_id];

        else

			return; /* empty package tag */

	if(!file_exists("/usr/local/pkg/" . $package['configurationfile'])) {

		log_error("The {$package['name']} package is missing its configuration file and must be reinstalled.");

		force_remove_package($package['name']);

	} else {

		$pkg_config = parse_xml_config_pkg("/usr/local/pkg/" . $package['configurationfile'], "packagegui");

		/* Bring in package include files */

		if (!empty($pkg_config['include_file'])) {

			$include_file = $pkg_config['include_file'];

			if (file_exists($include_file))

				require_once($include_file);

			else {

				/* XXX: What the heck is this?! */

				log_error("Could not locate {$include_file}.");

				install_package($package['name']);

				uninstall_package_from_name($package['name']);

				install_package($package['name']);

			}

		}

		/* XXX: Zend complains about the next line "Wrong break depth"

		 * The code is obviously wrong, but I'm not sure what it's supposed to do?

		 */

		if(isset($pkg_config['nosync'])) continue;

		if(!empty($pkg_config['custom_php_global_functions']))

			eval($pkg_config['custom_php_global_functions']);

		if(!empty($pkg_config['custom_php_resync_config_command']))

			eval($pkg_config['custom_php_resync_config_command']);

		if($sync_depends == true) {

			$depends = get_pkg_depends($pkg_name, ".xml", "files", 1); // Call dependency handler and do a little more error checking.

			if(is_array($depends)) {

				foreach($depends as $item) {

					if(!file_exists("/usr/local/pkg/" . $item)) {

						file_notice($package['name'], "The {$package['name']} package is missing required dependencies and must be reinstalled.", "Packages", "/pkg_mgr_install.php?mode=reinstallpkg&pkg={$package['name']}", 1);

						log_error("Could not find {$item}. Reinstalling package.");

						install_package($pkg_name);

						uninstall_package_from_name($pkg_name);

						install_package($pkg_name);

					} else {

						$item_config = parse_xml_config_pkg("/usr/local/pkg/" . $item, "packagegui");

						if(isset($item_config['nosync'])) continue;

						if($item_config['custom_php_command_before_form'] <> "") {

							eval($item_config['custom_php_command_before_form']);

						}

						if($item_config['custom_php_resync_config_command'] <> "") {

							eval($item_config['custom_php_resync_config_command']);

						}

						if($show_message == true) print " " . $item_config['name'];

					}

				}

			}

		}

	}

}

/*

 * pkg_fetch_recursive: Download and install a FreeBSD package and its dependencies. This function provides output to

 * 			a progress bar and output window.

 *

 * XXX: This function needs to return where a pkg_add fails. Our current error messages aren't very descriptive.

 */

function pkg_fetch_recursive($pkgname, $filename, $dependlevel = 0, $base_url = 'http://ftp2.freebsd.org/pub/FreeBSD/ports/i386/packages-5.4-release/Latest') {

	global $pkgent, $static_output, $g, $fd_log;

	$pkg_extension = strrchr($filename, '.');

	$static_output .= "\n" . str_repeat(" ", $dependlevel * 2) . $pkgname . " ";

	$fetchto = "{$g['tmp_path']}/apkg_" . $pkgname . $pkg_extension;

	download_file_with_progress_bar($base_url . '/' . $filename, $fetchto);

	$static_output .= " (extracting)";

	update_output_window($static_output);

		$slaveout = "";

	exec("/usr/bin/tar --fast-read -O -f {$fetchto} -x +CONTENTS 2>&1", $slaveout);

	$workingdir = preg_grep("/instmp/", $slaveout);

	$workingdir = $workingdir[0];

	$raw_depends_list = array_values(preg_grep("/\@pkgdep/", $slaveout));

	if($raw_depends_list != "") {

		if($pkgent['exclude_dependency'] != "")

			$raw_depends_list = array_values(preg_grep($pkgent['exclude_dependency'], PREG_GREP_INVERT));

		foreach($raw_depends_list as $adepend) {

			$working_depend = explode(" ", $adepend);

			//$working_depend = explode("-", $working_depend[1]);

			$depend_filename = $working_depend[1] . $pkg_extension;

			if(is_freebsd_pkg_installed($working_depend[1]) === false) {

				pkg_fetch_recursive($working_depend[1], $depend_filename, $dependlevel + 1, $base_url);

			} else {

//				$dependlevel++;

				$static_output .= "\n" . str_repeat(" ", $dependlevel * 2) . $working_depend[1] . " ";

				@fwrite($fd_log, $working_depend[1] . "\n");

			}

		}

	}

	$pkgaddout = "";

	exec("cat {$g['tmp_path']}/y | /usr/sbin/pkg_add -fv {$fetchto} 2>&1", $pkgaddout);

	@fwrite($fd_log, $pkgname . " " . print_r($pkgaddout, true) . "\n");

	return true;

}

function install_package($package, $pkg_info = "") {

	global $g, $config, $pkg_interface, $fd_log, $static_output, $pkg_interface, $restart_sync;

	if($pkg_interface == "console") 	

		echo "\n";

	/* open logfiles and begin installation */

	if(!$fd_log) {

		if(!$fd_log = fopen("{$g['tmp_path']}/pkg_mgr_{$package}.log", "w")) {

			update_output_window("Warning, could not open log for writing.");

		}

	}

	/* fetch package information if needed */

	if(!$pkg_info or !is_array($pkg_info[$package])) {

		$pkg_info = get_pkg_info(array($package));

		$pkg_info = $pkg_info[$package]; // We're only dealing with one package, so we can strip away the extra array.

	}

	@fwrite($fd_log, "Beginning package installation.\n");

	log_error('Beginning package installation for ' . $pkg_info['name'] . '.');

	update_status("Beginning package installation for " . $pkg_info['name'] . "...");	

	/* fetch the package's configuration file */

	if($pkg_info['config_file'] != "") {

		$static_output .= "Downloading package configuration file... ";

		update_output_window($static_output);

		@fwrite($fd_log, "Downloading package configuration file...\n");

		$fetchto = substr(strrchr($pkg_info['config_file'], '/'), 1);

		download_file_with_progress_bar($pkg_info['config_file'], '/usr/local/pkg/' . $fetchto);

		if(!file_exists('/usr/local/pkg/' . $fetchto)) {

			@fwrite($fd_log, "ERROR! Unable to fetch package configuration file. Aborting installation.\n");

			if($pkg_interface == "console") {

				print "\nERROR! Unable to fetch package configuration file. Aborting package installation.\n";

				return;

			} else {

				$static_output .= "failed!\n\nInstallation aborted.";

				update_output_window($static_output);

				echo "<br>Show <a href=\"pkg_mgr_install.php?showlog=true\">install log</a></center>";

			 	return -1;

			}

		}

		$static_output .= "done.\n";

		update_output_window($static_output);

	}

	/* add package information to config.xml */

	$pkgid = get_pkg_id($pkg_info['name']);

	$static_output .= "Saving updated package information... ";

	update_output_window($static_output);

	if($pkgid == -1) {

		$config['installedpackages']['package'][] = $pkg_info;

		$changedesc = "Installed {$pkg_info['name']} package.";

		$to_output = "done.\n";

	} else {

		$config['installedpackages']['package'][$pkgid] = $pkg_info;

		$changedesc = "Overwrote previous installation of {$pkg_info['name']}.";

		$to_output = "overwrite!\n";

	}

	/* XXX: Fix inclusion of config.inc that causes data loss! */

	write_config();

	$static_output .= $to_output;

	update_output_window($static_output);

	/* install other package components */

	install_package_xml($package);

	$static_output .= "Writing configuration... ";

	update_output_window($static_output);

	write_config($changedesc);

	$static_output .= "done.\n";

	update_output_window($static_output);

	$static_output .= "Starting service.\n";

	update_output_window($static_output);

	if($pkg_info['after_install_info']) 

		update_output_window($pkg_info['after_install_info']);	

	start_service($pkg_info['config_file']);

	$restart_sync = true;

}

function get_after_install_info($package) {

	global $pkg_info;

	/* fetch package information if needed */

	if(!$pkg_info or !is_array($pkg_info[$package])) {

		$pkg_info = get_pkg_info(array($package));

		$pkg_info = $pkg_info[$package]; // We're only dealing with one package, so we can strip away the extra array.

	}

	if($pkg_info['after_install_info'])

		return $pkg_info['after_install_info'];

}

function eval_once($toeval) {

	global $evaled;

	if(!$evaled) $evaled = array();

	$evalmd5 = md5($toeval);

	if(!in_array($evalmd5, $evaled)) {

		@eval($toeval);

		$evaled[] = $evalmd5;

	}

	return;

}

function install_package_xml($pkg) {

	global $g, $config, $fd_log, $static_output, $pkg_interface;

	if(($pkgid = get_pkg_id($pkg)) == -1) {

		$static_output .= "The {$pkg} package is not installed.\n\nInstallation aborted.";

		update_output_window($static_output);

		if($pkg_interface <> "console") {

			echo "\n<script language=\"JavaScript\">document.progressbar.style.visibility='hidden';</script>";

			echo "\n<script language=\"JavaScript\">document.progholder.style.visibility='hidden';</script>";

		}

		sleep(1);

		return;

	} else {

		$pkg_info = $config['installedpackages']['package'][$pkgid];

	}

	/* set up logging if needed */

	if(!$fd_log) {

		if(!$fd_log = fopen("{$g['tmp_path']}/pkg_mgr_{$pkg}.log", "w")) {

			update_output_window("Warning, could not open log for writing.");

		}

	}

	/* set up package logging streams */

	if($pkg_info['logging']) {

		mwexec("/usr/sbin/fifolog_create -s 32768 {$g['varlog_path']}/{$pkg_info['logging']['logfilename']}");

		chmod($g['varlog_path'] . '/' . $pkg_info['logging']['logfilename'], 0600);

		@fwrite($fd_log, "Adding text to file /etc/syslog.conf\n");

		if(is_process_running("syslogd"))

			mwexec("killall syslogd");

		system_syslogd_start();

	}

	/* make 'y' file */

	$fd = fopen("{$g['tmp_path']}/y", "w");

	for($line = 0; $line < 10; $line++) {

		fwrite($fd, "y\n");

	}

	fclose($fd);

	/* pkg_add the package and its dependencies */

	if($pkg_info['depends_on_package_base_url'] != "") {

		if($pkg_interface == "console") 

			echo "\n";

		update_status("Installing " . $pkg_info['name'] . " and its dependencies.");

		$static_output .= "Downloading " . $pkg_info['name'] . " and its dependencies... ";

		$static_orig = $static_output;

		$static_output .= "\n";

		update_output_window($static_output);

		foreach((array) $pkg_info['depends_on_package'] as $pkgdep) {

			$pkg_name = substr(reverse_strrchr($pkgdep, "."), 0, -1);

			if(isset($pkg_info['skip_install_checks'])) {

				$pkg_installed = true;

			} else {

				$pkg_installed = is_freebsd_pkg_installed($pkg_name);

			}

			if($pkg_installed == false)

				pkg_fetch_recursive($pkg_name, $pkgdep, 0, $pkg_info['depends_on_package_base_url']);

			$static_output = $static_orig . "done.\nChecking for successful package installation... ";

			update_output_window($static_output);

			/* make sure our package was successfully installed */

			if($pkg_installed == false)

				$pkg_installed = is_freebsd_pkg_installed($pkg_name);

			if($pkg_installed == true) {

				$static_output .= "done.\n";

				update_output_window($static_output);

				fwrite($fd_log, "pkg_add successfully completed.\n");

			} else {

				$static_output .= "of {$pkg_name} failed!\n\nInstallation aborted.";

				update_output_window($static_output);

				fwrite($fd_log, "Package WAS NOT installed properly.\n");

				fclose($fd_log);

				if($pkg_interface <> "console") {

					echo "\n<script language=\"JavaScript\">document.progressbar.style.visibility='hidden';</script>";

					echo "\n<script language=\"JavaScript\">document.progholder.style.visibility='hidden';</script>";

				}

				sleep(1);

				die;

			}

		}

	}

	$configfile = substr(strrchr($pkg_info['config_file'], '/'), 1);

	if(file_exists("/usr/local/pkg/" . $configfile)) {

		$static_output .= "Loading package configuration... ";

		update_output_window($static_output);

		$pkg_config = parse_xml_config_pkg("/usr/local/pkg/" . $configfile, "packagegui");

		$static_output .= "done.\n";

		update_output_window($static_output);

		$static_output .= "Configuring package components...\n";

		if (!empty($pkg_config['filter_rules_needed']))

			$config['installedpackages']['package'][$pkgid]['filter_rule_function'] = $pkg_config['filter_rules_needed'];

		update_output_window($static_output);

		/* modify system files */

		if(is_array($pkg_config['modify_system']['item'])) {

			$static_output .= "\tSystem files... ";

			update_output_window($static_output);

			foreach($pkg_config['modify_system']['item'] as $ms) {

				if($ms['textneeded']) {

					add_text_to_file($ms['modifyfilename'], $ms['textneeded']);

				}

			}

			$static_output .= "done.\n";

			update_output_window($static_output);

		}

		/* download additional files */

		if(is_array($pkg_config['additional_files_needed'])) {

			$static_output .= "\tAdditional files... ";

			$static_orig = $static_output;

			update_output_window($static_output);

			foreach($pkg_config['additional_files_needed'] as $afn) {

				$filename = get_filename_from_url($afn['item'][0]);

				if($afn['chmod'] <> "") {

					$pkg_chmod = $afn['chmod'];

				} else {

					$pkg_chmod = "";

				}

				if($afn['prefix'] <> "") {

					$prefix = $afn['prefix'];

				} else {

					$prefix = "/usr/local/pkg/";

				}

				if(!is_dir($prefix)) 

					safe_mkdir($prefix);

 				$static_output .= $filename . " ";

                                update_output_window($static_output);

				download_file_with_progress_bar($afn['item'][0], $prefix . $filename);

				if(stristr($filename, ".tgz") <> "") {

					fwrite($fd_log, "Extracting tarball to -C for " . $filename . "...\n");

					$tarout = "";

					exec("/usr/bin/tar xvzf " . $prefix . $filename . " -C / 2>&1", $tarout);

					fwrite($fd_log, print_r($tarout, true) . "\n");

				}

				if($pkg_chmod <> "") {

					fwrite($fd_log, "Changing file mode to {$pkg_chmod} for {$prefix}{$filename}\n");

					chmod($prefix . $filename, $pkg_chmod);

					system("/bin/chmod {$pkg_chmod} {$prefix}{$filename}");

				}

				$static_output = $static_orig;

                                update_output_window($static_output);

			}

			$static_output .= "done.\n";

			update_output_window($static_output);

		}

		/*   if a require exists, include it.  this will

		 *   show us where an error exists in a package

		 *   instead of making us blindly guess

		 */

		if($pkg_config['include_file'] <> "") {

			$static_output = "Loading package instructions...";

			update_output_window($static_output);

			fwrite($fd_log, "require_once('{$pkg_config['include_file']}')\n");

			require_once($pkg_config['include_file']);

		}

		/* sidebar items */

		if(is_array($pkg_config['menu'])) {

			$static_output .= "\tMenu items... ";

			update_output_window($static_output);

			foreach($pkg_config['menu'] as $menu) {

				if(is_array($config['installedpackages']['menu']))

					foreach($config['installedpackages']['menu'] as $amenu)

						if($amenu['name'] == $menu['name'])

							continue 2;

				$config['installedpackages']['menu'][] = $menu;

			}

			$static_output .= "done.\n";

			update_output_window($static_output);

		}

		/* integrated tab items */

		if(is_array($pkg_config['tabs']['tab'])) {

			$static_output .= "\tIntegrated Tab items... ";

			update_output_window($static_output);

			foreach($pkg_config['tabs']['tab'] as $tab) {

				if(is_array($config['installedpackages']['tab']))

					foreach($config['installedpackages']['tab'] as $atab)

						if($atab['name'] == $tab['name'])

							continue 2;

				$config['installedpackages']['tab'][] = $tab;

			}

			$static_output .= "done.\n";

			update_output_window($static_output);

		}

		/* services */

		if(is_array($pkg_config['service'])) {

			$static_output .= "\tServices... ";

			update_output_window($static_output);

			foreach($pkg_config['service'] as $service) {

				$config['installedpackages']['service'][] = $service;

			}

			$static_output .= "done.\n";

			update_output_window($static_output);

		}

		/* custom commands */

		$static_output .= "\tCustom commands... ";

		update_output_window($static_output);

		if($pkg_config['custom_php_global_functions'] <> "") {

			$static_output = "Executing custom_php_global_functions()...";

			update_output_window($static_output);

			eval_once($pkg_config['custom_php_global_functions']);

		}

		if($pkg_config['custom_php_install_command']) {

			$static_output = "Executing custom_php_install_command()...";

			update_output_window($static_output);

			eval_once($pkg_config['custom_php_install_command']);

		}

		if($pkg_config['custom_php_resync_config_command'] <> "") {

			$static_output = "Executing custom_php_resync_config_command()...";

			update_output_window($static_output);

			eval_once($pkg_config['custom_php_resync_config_command']);

		}

		$static_output .= "done.\n";

		update_output_window($static_output);

	} else {

		$static_output .= "Loading package configuration... failed!\n\nInstallation aborted.";

		update_output_window($static_output);

		fwrite($fd_log, "Unable to load package configuration. Installation aborted.\n");

		fclose($fd_log);

		if($pkg_interface <> "console") {

			echo "\n<script language=\"JavaScript\">document.progressbar.style.visibility='hidden';</script>";

			echo "\n<script language=\"JavaScript\">document.progholder.style.visibility='hidden';</script>";

		}

		sleep(1);

		return;

	}

}

function delete_package($pkg, $pkgid) {

	global $g, $config, $fd_log, $static_output;

	update_status("Removing package...");

	$static_output .= "Removing package... ";

	update_output_window($static_output);

	$pkgid = get_pkg_id($pkgid);

	$pkg_info = $config['installedpackages']['package'][$pkgid];

	$configfile = $pkg_info['configurationfile'];

	if(file_exists("/usr/local/pkg/" . $configfile)) {

		$static_output .= "\nLoading package configuration $configfile... ";

		update_output_window($static_output);

		$pkg_config = parse_xml_config_pkg("/usr/local/pkg/" . $configfile, "packagegui");

		/*   if a require exists, include it.  this will

		 *   show us where an error exists in a package

		 *   instead of making us blindly guess

		 */

		if($pkg_config['include_file'] <> "") {

			$static_output .= "\nLoading package instructions...\n";

			update_output_window($static_output);

			require_once($pkg_config['include_file']);

		}

	}

	$static_output .= "\nStarting package deletion for {$pkg_info['name']}...\n";

	update_output_window($static_output);

	if (!empty($pkg))

		delete_package_recursive($pkg);

	$static_output .= "done.\n";

	update_output_window($static_output);

	return;

}

function delete_package_recursive($pkg) {

	global $config, $g;

	$fd = fopen("{$g['tmp_path']}/y", "w");

	for($line = 0; $line < 10; $line++) {

		fwrite($fd, "y\n");

	}

	fclose($fd);