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<?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) {
	exec("cd /var/db/pkg && echo y | pkg_delete `ls | grep $packagestring`");
}

/****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`);
	$params = array(
		"pkg" => $pkgs, 
		"info" => $info, 
		"freebsd_version" => $freebsd_version
		);
	$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);
	$todel = substr(reverse_strrchr($config['installedpackages']['package'][$id]['depends_on_package'], "."), 0, -1);
	delete_package($todel, $pkg_name);
	delete_package_xml($pkg_name);
	remove_freebsd_package($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']);
				remove_freebsd_package($package['name']);
				install_package($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($pkg_name);
						remove_freebsd_package($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 = "/tmp/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";
	}
	$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 {
				$static_output .= "failed!\n\nInstallation aborted.";
				update_output_window($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($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($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($fd_log, "require_once('include_file')\n");
			require_once($pkg_config['include_file']);
		}
		/* sidebar items */
		if($pkg_config['menu'] != "") {
			$static_output .= "\tMenu items... ";
			update_output_window($static_output);
			if(is_array($pkg_config['menu'])) {
				foreach($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($pkg_config['tabs'] != "") {
			$static_output .= "\tIntegrated Tab items... ";
			update_output_window($static_output);
			if(is_array($pkg_config['tabs']['tab'])) {
				foreach($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($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($static_output);
	delete_package_recursive($pkg);
	remove_freebsd_package($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);
	$info = "";
	exec("/usr/sbin/pkg_info -r " . $pkg . " 2>&1", $info);
	exec("cat {$g['tmp_path']}/y | /usr/sbin/pkg_delete " . $pkg ." > /dev/null 2>&1");
	remove_freebsd_package($pkg);
	$pkgdb = "";
	exec("/bin/ls /var/db/pkg", $pkgdb);
	foreach($info as $line) {
		$depend = trim(array_pop(explode(":", $line)));
		if(in_array($depend, $pkgdb)) 
			delete_package_recursive($depend);
	}
	return;
}

function delete_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\nDeletion 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>";
		}
		ob_flush();
		sleep(1);
		return;
	}
	/* 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.");
		}
	}
	update_status("Removing {$pkg} components...");
	fwrite($fd_log, "Removing {$pkg} package... ");
	$static_output .= "Removing {$pkg} components...\n";
	update_output_window($static_output);
	/* parse package configuration */
	$packages = &$config['installedpackages']['package'];
	$tabs =& $config['installedpackages']['tab'];
	$menus =& $config['installedpackages']['menu'];
	$services = &$config['installedpackages']['service'];
	if(file_exists("/usr/local/pkg/" . $packages[$pkgid]['configurationfile'])) {
		$pkg_config = parse_xml_config_pkg("/usr/local/pkg/" . $packages[$pkgid]['configurationfile'], "packagegui");
		/* remove tab items */
		if(is_array($pkg_config['tabs'])) {
			$static_output .= "\tMenu items... ";
			update_output_window($static_output);
			if(is_array($tabs))
				foreach($tabs as $tab)
					$insttabs[] = $tab['name'];
			if($pkg_config['tabs']['tab'])
				foreach($pkg_config['tabs']['tab'] as $tab)
					foreach($insttabs as $key => $insttab)
						if($insttab == $tab['name'])
							unset($tabs[$key]);
			$static_output .= "done.\n";
			update_output_window($static_output);
		}
		/* remove menu items */
		if(is_array($pkg_config['menu'])) {
			$static_output .= "\tMenu items... ";
			update_output_window($static_output);
			foreach($menus as $menu)
				$instmenus[] = $menu['name'];
			foreach($pkg_config['menu'] as $menu)
				foreach($instmenus as $key => $instmenu)
					if($instmenu == $menu['name'])
						unset($menus[$key]);
			$static_output .= "done.\n";
			update_output_window($static_output);
		}
		/* remove services */
		if(is_array($pkg_config['service'])) {
			$static_output .= "\tServices... ";
			update_output_window($static_output);
			foreach($services as $service) $instservices[] = $service['name'];
			foreach($pkg_config['service'] as $service) {
				foreach($instservices as $key => $instservice) {
					if($instservice == $service['name']) {
						stop_service($service['name']);
						unset($services[$key]);
					}
				}
			}
			$static_output .= "done.\n";
			update_output_window($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($fd_log, "require_once('include_file')\n");
			if(file_exists($pkg_config['include_file']))
				require_once($pkg_config['include_file']);
			fwrite($fd_log, "require_once('include_file') included\n");
		}
		/* evalate this package's global functions and pre deinstall commands */
		if($pkg_config['custom_php_global_functions'] <> "")
			eval_once($pkg_config['custom_php_global_functions']);
		if($pkg_config['custom_php_pre_deinstall_command'] <> "")
			eval_once($pkg_config['custom_php_pre_deinstall_command']);
		/* remove all additional files */
		if($pkg_config['additional_files_needed'] <> "") {
			$static_output .= "\tAuxiliary files... ";
			update_output_window($static_output);
			foreach($pkg_config['additional_files_needed'] as $afn) {
				$filename = get_filename_from_url($afn['item'][0]);
				if($afn['prefix'] <> "") {
					$prefix = $afn['prefix'];
				} else {
					$prefix = "/usr/local/pkg/";
				}
				unlink_if_exists($prefix . $filename);
				if(file_exists($prefix . $filename))
				    mwexec("rm -rf {$prefix}{$filename}");
			}
			$static_output .= "done.\n";
			update_output_window($static_output);
		}
		/* system files */
		if($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']) remove_text_from_file($ms['modifyfilename'], $ms['textneeded']);
			}
			$static_output .= "done.\n";
			update_output_window($static_output);
		}
		/* syslog */
		if($pkg_config['logging']['logfile_name'] <> "") {
			$static_output .= "\tSyslog entries... ";
			update_output_window($static_output);
			remove_text_from_file("/etc/syslog.conf", $pkg_config['logging']['facilityname'] . "\t\t\t\t" . $pkg_config['logging']['logfilename']);
			$static_output .= "done.\n";
			update_output_window($static_output);
		}
		/* deinstall commands */
		if($pkg_config['custom_php_deinstall_command'] <> "") {
			$static_output .= "\tDeinstall commands... ";
			update_output_window($static_output);
			eval_once($pkg_config['custom_php_deinstall_command']);
			$static_output .= "done.\n";
			update_output_window($static_output);
		}
		/* package XML file */
		$static_output .= "\tPackage XML... ";
		update_output_window($static_output);
		unlink_if_exists("/usr/local/pkg/" . $packages[$pkgid]['configurationfile']);
		$static_output .= "done.\n";
		update_output_window($static_output);
	}
	/* remove config.xml entries */
	$static_output .= "\tConfiguration... ";
	update_output_window($static_output);
	unset($config['installedpackages']['package'][$pkgid]);
	$static_output .= "done.\n";
	update_output_window($static_output);
	write_config("Removed {$pkg} package.");
	/* file cleanup */
	$ctag = file("/etc/crontab");
	foreach($ctag as $line) {
		if(trim($line) != "") $towrite[] = $line;
	}
	$tmptab = fopen("/tmp/crontab", "w");
	foreach($towrite as $line) {
		fwrite($tmptab, $line);
	}
	fclose($tmptab);
	rename("/tmp/crontab", "/etc/crontab");
}

function expand_to_bytes($size) {
	$conv = array(
			"G" =>	"3",
			"M" =>  "2",
			"K" =>  "1",
			"B" =>  "0"
		);
	$suffix = substr($size, -1);
	if(!in_array($suffix, array_keys($conv))) return $size;
	$size = substr($size, 0, -1);
	for($i = 0; $i < $conv[$suffix]; $i++) {
		$size *= 1024;
	}
	return $size;
}

function get_pkg_db() {
	global $g;
	return return_dir_as_array($g['vardb_path'] . '/pkg');
}

function walk_depend($depend, $pkgdb = "", $alreadyseen = "") {
	if(!$pkgdb) $pkgdb = get_pkg_db();
	if(!$alreadyseen) $alreadyseen = array();
	foreach($depend as $adepend) {
		$pkgname = reverse_strrchr($adepend['name'], '.');
		if(in_array($pkgname, $alreadyseen)) {
			continue;
		} elseif(!in_array($pkgname, $pkgdb)) {
			$size += expand_to_bytes($adepend['size']);
			$alreadyseen[] = $pkgname;
			if(is_array($adepend['depend'])) $size += walk_depend($adepend['depend'], $pkgdb, $alreadyseen);
		} else {
			continue;
		}
	}
	return $size;
}

function get_package_install_size($pkg = 'all', $pkg_info = "") {
	global $config, $g;
	if((!is_array($pkg)) and ($pkg != 'all')) $pkg = array($pkg);
	$pkgdb = get_pkg_db();
	if(!$pkg_info) $pkg_info = get_pkg_sizes($pkg);
	foreach($pkg as $apkg) {
		if(!$pkg_info[$apkg]) continue;
		$toreturn[$apkg] = expand_to_bytes(walk_depend(array($pkg_info[$apkg]), $pkgdb));
	}
	return $toreturn;
}

function squash_from_bytes($size, $round = "") {
	$conv = array(1 => "B", "K", "M", "G");
	foreach($conv as $div => $suffix) {
		$sizeorig = $size;
		if(($size /= 1024) < 1) {
			if($round) {
				$sizeorig = round($sizeorig, $round);
			}
			return $sizeorig . $suffix;
		}
	}
	return;
}

function pkg_build_filter_rules() {
	global $config, $g;

	
	$pkgrules = "";
        $pkgrulesearly = "";
        $pkgnatrules = "";
        $pkgnatrulesearly = "";
        $pkgrdrrules = "";
        $pkgrdrrulesearly = "";

	if (is_array($config['installedpackages']['package'])) {
		run_plugins("/usr/local/pkg");
                foreach($config['installedpackages']['package'] as $pkg) {
                        if (!isset($pkg['filter_rule_function']))
				continue;
			$tmpresult = call_user_func($pkg['filter_rule_function'], 'natearly');
                        if (!empty($tmpresult))
                                $pkgnatrulesearly .= $tmpresult . " \n";
			$tmpresult = call_user_func($pkg['filter_rule_function'], 'nat');
			if (!empty($tmpresult))
				$pkgnatrules .= $tmpresult . " \n";
			$tmpresult = call_user_func($pkg['filter_rule_function'], 'ruleearly');
                        if (!empty($tmpresult))
                                $pkgrulesearly .= $tmpresult . " \n";
			$tmpresult = call_user_func($pkg['filter_rule_function'], 'rule');
			if (!empty($tmpresult))
				$pkgrules .= $tmpresult . " \n";
			$tmpresult = call_user_func($pkg['filter_rule_function'], 'rdrearly');
                        if (!empty($tmpresult))
                                $pkgrdrrulesearly .= $tmpresult . " \n";
			$tmpresult = call_user_func($pkg['filter_rule_function'], 'rdr');
                        if (!empty($tmpresult))
                                $pkgrdrrules .= $tmpresult . " \n";
			
                }
        }
        file_put_contents("{$g['tmp_path']}/rules.natearly.packages", $pkgnatrulesearly);
	file_put_contents("{$g['tmp_path']}/rules.nat.packages", $pkgnatrules);
	file_put_contents("{$g['tmp_path']}/rules.rulesearly.packages", $pkgrulesearly);
        file_put_contents("{$g['tmp_path']}/rules.packages", $pkgrules);
        file_put_contents("{$g['tmp_path']}/rules.rdr.packages", $pkgrdrrules);
        file_put_contents("{$g['tmp_path']}/rules.rdrearly.packages", $pkgrdrrulesearly);
	$error = "";
	$status = mwexec("/sbin/pfctl -nf {$g['tmp_path']}/rules.natearly.packages");
        if ($status <> 0) {
                $errornatearly = "There was an error while parsing the NAT early package rules.\n";
		$error .= $errornatearly;
                log_error($errornatearly);
		file_put_contents("{$g['tmp_path']}/rules.natearly.packages", "#{$errornatearly}\n");
        }
	$status = mwexec("/sbin/pfctl -nf {$g['tmp_path']}/rules.nat.packages");
        if ($status <> 0) {
                $errornat = "There was an error while parsing the NAT package rules.\n";
		$error .= $errornat;
		log_error($errornat);
                file_put_contents("{$g['tmp_path']}/rules.nat.packages", "#{$errornat}\n");
        }
	$status = mwexec("/sbin/pfctl -nf {$g['tmp_path']}/rules.rulesearly.packages");
	if ($status <> 0) {
		$errorrulesearly = "There was an error while parsing the package filter early rules.\n";
		$error .= $errorrulesearly;
		log_error($errorrulesearly);
                file_put_contents("{$g['tmp_path']}/rules.rulesearly.packages", "#{$errorrulesearly}\n");
	}
	$status = mwexec("/sbin/pfctl -nf {$g['tmp_path']}/rules.packages");
	if ($status <> 0) {
		$errorrules = "There was an error while parsing the package filter rules.\n";
		$error .= $errorrules;
		log_error($errorrules);
                file_put_contents("{$g['tmp_path']}/rules.packages", "#{$errorrules}\n");
        }
	$status = mwexec("/sbin/pfctl -nf {$g['tmp_path']}/rules.rdrearly.packages");
        if ($status <> 0) {
                $errorrdrearly = "There was an error while parsing the RDR early package rules.\n";
		$error .= $errorrdrearly;
		log_error($errorrdrearly);
                file_put_contents("{$g['tmp_path']}/rules.rdrearly.packages", "#{$errorrdrearly}\n");
        }
	$status = mwexec("/sbin/pfctl -nf {$g['tmp_path']}/rules.rdr.packages");
        if ($status <> 0) {
		$errorrdr = "There was an error while parsing the RDR package rules.\n";
		$error .= $errorrdr;
		log_error($errorrdr);
                file_put_contents("{$g['tmp_path']}/rules.rdr.packages", "#{$errorrdr}\n");
        }
	if ($error <> "")
		file_notice($error);
}

?>
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