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Diffstat (limited to 'packages/squid3/squid.inc')
| -rw-r--r-- | packages/squid3/squid.inc | 1083 |
1 files changed, 1083 insertions, 0 deletions
diff --git a/packages/squid3/squid.inc b/packages/squid3/squid.inc new file mode 100644 index 00000000..33be0fa9 --- /dev/null +++ b/packages/squid3/squid.inc @@ -0,0 +1,1083 @@ +<?php +/* $Id$ */ +/* + squid.inc + Copyright (C) 2006 Scott Ullrich + Copyright (C) 2006 Fernando Lemos + 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) + ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + POSSIBILITY OF SUCH DAMAGE. +*/ + +require_once('globals.inc'); +require_once('config.inc'); +require_once('util.inc'); +require_once('pfsense-utils.inc'); +require_once('pkg-utils.inc'); +require_once('filter.inc'); +require_once('service-utils.inc'); + +define('SQUID_CONFBASE', '/usr/local/etc/squid'); +define('SQUID_ACLDIR', '/var/squid/acl'); +define('SQUID_PASSWD', '/var/etc/squid.passwd'); + +$valid_acls = array(); + +function squid_get_real_interface_address($iface) { + global $config; + + $iface = convert_friendly_interface_to_real_interface_name($iface); + $line = trim(shell_exec("ifconfig $iface | grep inet | grep -v inet6")); + list($dummy, $ip, $dummy2, $netmask) = explode(" ", $line); + + return array($ip, long2ip(hexdec($netmask))); +} + +function squid_chown_recursive($dir, $user, $group) { + chown($dir, $user); + chgrp($dir, $group); + $handle = opendir($dir) ; + while (($item = readdir($handle)) !== false) { + if (($item != ".") && ($item != "..")) { + $path = "$dir/$item"; + if (is_dir($path)) + squid_chown_recursive($path, $user, $group); + else { + chown($path, $user); + chgrp($path, $group); + } + } + } +} + +/* setup cache */ +function squid_dash_z() { + global $config; + $settings = $config['installedpackages']['squidcache']['config'][0]; + $cachedir =($settings['harddisk_cache_location'] ? $settings['harddisk_cache_location'] : '/var/squid/cache'); + + if(!is_dir($cachedir.'/')) { + log_error("Creating Squid cache dir $cachedir"); + make_dirs($cachedir); + squid_chown_recursive($cachedir, 'proxy', 'proxy'); + } + + if(!is_dir($cachedir.'/00/')) { + log_error("Creating squid cache subdirs in $cachedir"); + mwexec("/usr/local/sbin/squid -k shutdown"); + sleep(5); + mwexec("/usr/local/sbin/squid -k kill"); + mwexec("/usr/local/sbin/squid -z"); + } + + exec("chmod a+rw /var/squid/cache/swap.state"); + +} + +function squid_is_valid_acl($acl) { + global $valid_acls; + if(!is_array($valid_acls)) + return; + return in_array($acl, $valid_acls); +} + +function squid_install_command() { + global $config; + /* migrate existing csv config fields */ + $settingsauth = $config['installedpackages']['squidauth']['config'][0]; + $settingscache = $config['installedpackages']['squidcache']['config'][0]; + $settingsnac = $config['installedpackages']['squidnac']['config'][0]; + + /* migrate auth settings */ + if (!empty($settingsauth['no_auth_hosts'])) { + if(strstr($settingsauth['no_auth_hosts'], ",")) { + $settingsauth['no_auth_hosts'] = base64_encode(implode("\n", explode(",", $settingsauth['no_auth_hosts']))); + $config['installedpackages']['squidauth']['config'][0]['no_auth_hosts'] = $settingsauth['no_auth_hosts']; + } + } + + /* migrate cache settings */ + if (!empty($settingscache['donotcache'])) { + if(strstr($settingscache['donotcache'], ",")) { + $settingscache['donotcache'] = base64_encode(implode("\n", explode(",", $settingscache['donotcache']))); + $config['installedpackages']['squidcache']['config'][0]['donotcache'] = $settingscache['donotcache']; + } + } + + /* migrate nac settings */ + if(! empty($settingsnac['allowed_subnets'])) { + if(strstr($settingsnac['allowed_subnets'], ",")) { + $settingsnac['allowed_subnets'] = base64_encode(implode("\n", explode(",", $settingsnac['allowed_subnets']))); + $config['installedpackages']['squidnac']['config'][0]['allowed_subnets'] = $settingsnac['allowed_subnets']; + } + } + if(! empty($settingsnac['banned_hosts'])) { + if(strstr($settingsnac['banned_hosts'], ",")) { + $settingsnac['banned_hosts'] = base64_encode(implode("\n", explode(",", $settingsnac['banned_hosts']))); + $config['installedpackages']['squidnac']['config'][0]['banned_hosts'] = $settingsnac['banned_hosts']; + } + } + if(! empty($settingsnac['banned_macs'])) { + if(strstr($settingsnac['banned_macs'], ",")) { + $settingsnac['banned_macs'] = base64_encode(implode("\n", explode(",", $settingsnac['banned_macs']))); + $config['installedpackages']['squidnac']['config'][0]['banned_macs'] = $settingsnac['banned_macs']; + } + } + if(! empty($settingsnac['unrestricted_hosts'])) { + if(strstr($settingsnac['unrestricted_hosts'], ",")) { + $settingsnac['unrestricted_hosts'] = base64_encode(implode("\n", explode(",", $settingsnac['unrestricted_hosts']))); + $config['installedpackages']['squidnac']['config'][0]['unrestricted_hosts'] = $settingsnac['unrestricted_hosts']; + } + } + if(! empty($settingsnac['unrestricted_macs'])) { + if(strstr($settingsnac['unrestricted_macs'], ",")) { + $settingsnac['unrestricted_macs'] = base64_encode(implode("\n", explode(",", $settingsnac['unrestricted_macs']))); + $config['installedpackages']['squidnac']['config'][0]['unrestricted_macs'] = $settingsnac['unrestricted_macs']; + } + } + if(! empty($settingsnac['whitelist'])) { + if(strstr($settingsnac['whitelist'], ",")) { + $settingsnac['whitelist'] = base64_encode(implode("\n", explode(",", $settingsnac['whitelist']))); + $config['installedpackages']['squidnac']['config'][0]['whitelist'] = $settingsnac['whitelist']; + } + } + if(! empty($settingsnac['blacklist'])) { + if(strstr($settingsnac['blacklist'], ",")) { + $settingsnac['blacklist'] = base64_encode(implode("\n", explode(",", $settingsnac['blacklist']))); + $config['installedpackages']['squidnac']['config'][0]['blacklist'] = $settingsnac['blacklist']; + } + } + + update_status("Writing configuration... One moment please..."); + + write_config(); + + /* create cache */ + update_status("Creating squid cache pools... One moment please..."); + squid_dash_z(); + /* make sure pinger is executable */ + if(file_exists("/usr/local/libexec/squid/pinger")) + exec("/bin/chmod a+x /usr/local/libexec/squid/pinger"); + if(file_exists("/usr/local/etc/rc.d/squid")) + exec("/bin/rm /usr/local/etc/rc.d/squid"); + $rc = array(); + $rc['file'] = 'squid.sh'; + $rc['start'] = <<<EOD +if [ -z "`ps auxw | grep "[s]quid -D"|awk '{print $2}'`" ];then + /usr/local/sbin/squid -D +fi + +EOD; + $rc['stop'] = <<<EOD +/usr/local/sbin/squid -k shutdown +# Just to be sure... +sleep 5 +killall -9 squid 2>/dev/null +killall pinger 2>/dev/null + +EOD; + $rc['restart'] = <<<EOD +if [ -z "`ps auxw | grep "[s]quid -D"|awk '{print $2}'`" ];then + /usr/local/sbin/squid -D + else + /usr/local/sbin/squid -k reconfigure + fi + +EOD; + update_status("Writing rc files... One moment please..."); + write_rcfile($rc); + + exec("chmod a+rx /usr/local/libexec/squid/dnsserver"); + + foreach (array( SQUID_CONFBASE, + SQUID_ACLDIR, + ) as $dir) { + make_dirs($dir); + squid_chown_recursive($dir, 'proxy', 'proxy'); + } + + /* kill any running proxy alarm scripts */ + update_status("Checking for running processes... One moment please..."); + log_error("Stopping any running proxy monitors"); + mwexec("ps awux | grep \"proxy_monitor\" | grep -v \"grep\" | grep -v \"php\" | awk '{ print $2 }' | xargs kill"); + sleep(1); + + if (!file_exists(SQUID_CONFBASE . '/mime.conf') && file_exists(SQUID_CONFBASE . '/mime.conf.default')) + copy(SQUID_CONFBASE . '/mime.conf.default', SQUID_CONFBASE . '/mime.conf'); + + update_status("Checking cache... One moment please..."); + squid_dash_z(); + + if (!is_service_running('squid')) { + update_status("Starting... One moment please..."); + log_error("Starting Squid"); + mwexec_bg("/usr/local/sbin/squid -D"); + } else { + update_status("Reloading Squid for configuration sync... One moment please..."); + log_error("Reloading Squid for configuration sync"); + mwexec("/usr/local/sbin/squid -k reconfigure"); + } + + /* restart proxy alarm scripts */ + log_error("Starting a proxy monitor script"); + mwexec_bg("/usr/local/etc/rc.d/proxy_monitor.sh"); + + update_status("Reconfiguring filter... One moment please..."); + filter_configure(); +} + +function squid_deinstall_command() { + global $config; + $settings = $config['installedpackages']['squidcache']['config'][0]; + $cachedir =($settings['harddisk_cache_location'] ? $settings['harddisk_cache_location'] : '/var/squid/cache'); + $logdir = ($settings['log_dir'] ? $settings['log_dir'] : '/var/squid/log'); + + mwexec('rm -rf $cachedir'); + mwexec('rm -rf $logdir'); + mwexec('rm -f /usr/local/etc/rc.d/proxy_monitor.sh'); + mwexec("ps awux | grep \"proxy_monitor\" | grep -v \"grep\" | grep -v \"php\" | awk '{ print $2 }' | xargs kill"); + mwexec("ps awux | grep \"squid\" | grep -v \"grep\" | awk '{ print $2 }' | xargs kill"); + mwexec("ps awux | grep \"dnsserver\" | grep -v \"grep\" | awk '{ print $2 }' | xargs kill"); + mwexec("ps awux | grep \"unlinkd\" | grep -v \"grep\" | awk '{ print $2 }' | xargs kill"); + filter_configure(); +} + +function squid_before_form_general($pkg) { + $values = get_dir(SQUID_CONFBASE . '/errors/'); + // Get rid of '..' and '.' + array_shift($values); + array_shift($values); + $name = array(); + foreach ($values as $value) + $names[] = implode(" ", explode("_", $value)); + + $i = 0; + foreach ($pkg['fields']['field'] as $field) { + if ($field['fieldname'] == 'error_language') + break; + $i++; + } + $field = &$pkg['fields']['field'][$i]; + + for ($i = 0; $i < count($values) - 1; $i++) + $field['options']['option'][] = array('name' => $names[$i], 'value' => $values[$i]); +} + +function squid_validate_general($post, $input_errors) { + global $config; + $icp_port = trim($post['icp_port']); + if (!empty($icp_port) && !is_port($icp_port)) + $input_errors[] = 'You must enter a valid port number in the \'ICP port\' field'; + + if (substr($post['log_dir'], -1, 1) == '/') + $input_errors[] = 'You may not end log location with an / mark'; + + if ($post['log_dir']{0} != '/') + $input_errors[] = 'You must start log location with a / mark'; + if (strlen($post['log_dir']) <= 3) + $input_errors[] = "That is not a valid log location dir"; + + $webgui_port = $config['system']['webgui']['port']; + if(($config['system']['webgui']['port'] == "") && ($config['system']['webgui']['protocol'] == "http")) { + $webgui_port = 80; + } + if(($config['system']['webgui']['port'] == "") && ($config['system']['webgui']['protocol'] == "https")) { + $webgui_port = 443; + } + + if (($post['transparent_proxy'] != 'on') && ($port == $webgui_port)) { + $input_errors[] = "You can not run squid on the same port as the webgui"; + } + + if (($post['transparent_proxy'] != 'on') && ($post['private_subnet_proxy_off'] == 'on')) { + $input_errors[] = "You can not disable forwarding traffic to private subnets to the proxy server without using the transparent proxy."; + } + +} + +function squid_validate_upstream($post, $input_errors) { + if ($post['proxy_forwarding'] == 'on') { + $addr = trim($post['proxy_addr']); + if (empty($addr)) + $input_errors[] = 'The field \'Hostname\' is required'; + else { + if (!is_ipaddr($addr) && !is_domain($addr)) + $input_errors[] = 'You must enter a valid IP address or host name in the \'Proxy hostname\' field'; + } + + foreach (array('proxy_port' => 'TCP port', 'icp_port' => 'ICP port') as $field => $name) { + $port = trim($post[$field]); + if (empty($port)) + $input_errors[] = "The field '$name' is required"; + else { + if (!is_port($port)) + $input_errors[] = "The field '$name' must contain a valid port number, between 0 and 65535"; + } + } + } +} + +function squid_validate_cache($post, $input_errors) { + $num_fields = array( 'harddisk_cache_size' => 'Hard disk cache size', + 'memory_cache_size' => 'Memory cache size', + 'maximum_object_size' => 'Maximum object size', + ); + foreach ($num_fields as $field => $name) { + $value = trim($post[$field]); + if (!is_numeric($value) || ($value < 0)) + $input_errors[] = "You must enter a valid value for '$field'"; + } + + $value = trim($post['minimum_object_size']); + if (!is_numeric($value) || ($value < 0)) + $input_errors[] = 'You must enter a valid value for \'Minimum object size\''; + + if ($post['donotcache'] != "") { + foreach (split("\n", $post['donotcache']) as $host) { + $host = trim($host); + if (!is_ipaddr($host) && !is_domain($host)) + $input_errors[] = "The host '$host' is not a valid IP or host name"; + } + } + + squid_dash_z(); + +} + +function squid_validate_nac($post, $input_errors) { + $allowed_subnets = explode("\n", $post['allowed_subnets']); + foreach ($allowed_subnets as $subnet) { + $subnet = trim($subnet); + if (!empty($subnet) && !is_subnet($subnet)) + $input_errors[] = "The subnet '$subnet' is not a valid CIDR range"; + } + + foreach (array( 'unrestricted_hosts', 'banned_hosts') as $hosts) { + foreach (explode("\n", $post[$hosts]) as $host) { + $host = trim($host); + if (!empty($host) && !is_ipaddr($host)) + $input_errors[] = "The host '$host' is not a valid IP address"; + } + } + + foreach (array('unrestricted_macs', 'banned_macs') as $macs) { + foreach (explode("\n", $post[$macs]) as $mac) { + $mac = trim($mac); + if (!empty($mac) && !is_macaddr($mac)) + $input_errors[] = "The mac '$mac' is not a valid MAC address"; + } + } + + foreach (explode(",", $post['timelist']) as $time) { + $time = trim($time); + if (!empty($time) && !squid_is_timerange($time)) + $input_errors[] = "The time range '$time' is not a valid time range"; + } +} + +function squid_validate_traffic($post, $input_errors) { + $num_fields = array( 'max_download_size' => 'Maximum download size', + 'max_upload_size' => 'Maximum upload size', + 'perhost_throttling' => 'Per-host bandwidth throttling', + 'overall_throttling' => 'Overall bandwidth throttling', + ); + foreach ($num_fields as $field => $name) { + $value = trim($post[$field]); + if (!is_numeric($value) || ($value < 0)) + $input_errors[] = "The field '$name' must contain a positive number"; + } +} + +function squid_validate_auth($post, $input_errors) { + $num_fields = array( array('auth_processes', 'Authentication processes', 1), + array('auth_ttl', 'Authentication TTL', 0), + ); + foreach ($num_fields as $field) { + $value = trim($post[$field[0]]); + if (!empty($value) && (!is_numeric($value) || ($value < $field[2]))) + $input_errors[] = "The field '{$field[1]}' must contain a valid number greater than {$field[2]}"; + } + + $auth_method = $post['auth_method']; + if (($auth_method != 'none') && ($auth_method != 'local')) { + $server = trim($post['auth_server']); + if (empty($server)) + $input_errors[] = 'The field \'Authentication server\' is required'; + else if (!is_ipaddr($server) && !is_domain($server)) + $input_errors[] = 'The field \'Authentication server\' must contain a valid IP address or domain name'; + + $port = trim($post['auth_server_port']); + if (!empty($port) && !is_port($port)) + $input_errors[] = 'The field \'Authentication server port\' must contain a valid port number'; + + switch ($auth_method) { + case 'ldap': + $user = trim($post['ldap_user']); + if (empty($user)) + $input_errors[] = 'The field \'LDAP server user DN\' is required'; + else if (!$user) + $input_errors[] = 'The field \'LDAP server user DN\' must be a valid domain name'; + break; + case 'radius': + $secret = trim($post['radius_secret']); + if (empty($secret)) + $input_errors[] = 'The field \'RADIUS secret\' is required'; + break; + case 'msnt': + foreach (explode(",", trim($post['msnt_secondary'])) as $server) { + if (!empty($server) && !is_ipaddr($server) && !is_domain($server)) + $input_errors[] = "The host '$server' is not a valid IP address or domain name"; + } + break; + } + + $no_auth = explode("\n", $post['no_auth_hosts']); + foreach ($no_auth as $host) { + $host = trim($host); + if (!empty($host) && !is_subnet($host)) + $input_errors[] = "The host '$host' is not a valid CIDR range"; + } + } +} + +function squid_resync_general() { + global $g, $config, $valid_acls; + + $settings = $config['installedpackages']['squid']['config'][0]; + $conf = "# This file is automatically generated by pfSense\n"; + $conf = "# Do not edit manually!\n"; + + $port = ($settings['proxy_port'] ? $settings['proxy_port'] : 3128); + $ifaces = ($settings['active_interface'] ? $settings['active_interface'] : 'lan'); + $real_ifaces = array(); + foreach (explode(",", $ifaces) as $i => $iface) { + $real_ifaces[] = squid_get_real_interface_address($iface); + if($real_ifaces[$i][0]) { + $conf .= "http_port {$real_ifaces[$i][0]}:$port\n"; + } + } + if (($settings['transparent_proxy'] == 'on')) { + $conf .= "http_port 127.0.0.1:80 transparent\n"; + } + $icp_port = ($settings['icp_port'] ? $settings['icp_port'] : 0); + + $pidfile = "{$g['varrun_path']}/squid.pid"; + $language = ($settings['error_language'] ? $settings['error_language'] : 'English'); + $errordir = SQUID_CONFBASE . '/errors/' . $language; + $hostname = ($settings['visible_hostname'] ? $settings['visible_hostname'] : 'localhost'); + $email = ($settings['admin_email'] ? $settings['admin_email'] : 'admin@localhost'); + + $logdir = ($settings['log_dir'] ? $settings['log_dir'] : '/var/squid/log'); + + $logdir_cache = $logdir . '/cache.log'; + $logdir_access = ($settings['log_enabled'] == 'on' ? $logdir . '/access.log' : '/dev/null'); + + $conf .= <<<EOD +icp_port $icp_port + +pid_filename $pidfile +cache_effective_user proxy +cache_effective_group proxy +error_directory $errordir +visible_hostname $hostname +cache_mgr $email + +access_log $logdir_access +cache_log $logdir_cache +cache_store_log none +shutdown_lifetime 3 seconds + +EOD; + + if ($settings['allow_interface'] == 'on') { + $src = ''; + foreach ($real_ifaces as $iface) { + list($ip, $mask) = $iface; + $ip = long2ip(ip2long($ip) & ip2long($mask)); + $src .= " $ip/$mask"; + } + $conf .= "# Allow local network(s) on interface(s)\n"; + $conf .= "acl localnet src $src\n"; + $valid_acls[] = 'localnet'; + } + if ($settings['disable_xforward']) $conf .= "forwarded_for off\n"; + if ($settings['disable_via']) $conf .= "via off\n"; + if (!empty($settings['uri_whitespace'])) $conf .= "uri_whitespace {$settings['uri_whitespace']}\n"; + + return $conf; +} + +function squid_resync_cache() { + global $config; + + $settings = $config['installedpackages']['squidcache']['config'][0]; + + $cachedir =($settings['harddisk_cache_location'] ? $settings['harddisk_cache_location'] : '/var/squid/cache'); + $disk_cache_size = ($settings['harddisk_cache_size'] ? $settings['harddisk_cache_size'] : 100); + $level1 = ($settings['level1_subdirs'] ? $settings['level1_subdirs'] : 16); + $memory_cache_size = ($settings['memory_cache_size'] ? $settings['memory_cache_size'] : 8); + $max_objsize = ($settings['maximum_object_size'] ? $settings['maximum_object_size'] : 10); + $min_objsize = ($settings['minimum_object_size'] ? $settings['minimum_object_size'] : 0); + $cache_policy = ($settings['cache_replacement_policy'] ? $settings['cache_replacement_policy'] : 'heap LFUDA'); + $memory_policy = ($settings['memory_replacement_policy'] ? $settings['memory_replacement_policy'] : 'heap GDSF'); + $offline_mode = ($settings['enable_offline'] == 'on' ? 'on' : 'off'); + + $conf = <<<EOD +cache_dir aufs $cachedir $disk_cache_size $level1 256 +cache_mem $memory_cache_size MB +maximum_object_size $max_objsize KB +minimum_object_size $min_objsize KB +cache_replacement_policy $cache_policy +memory_replacement_policy $memory_policy +offline_mode $offline_mode + +EOD; + + $donotcache = base64_decode($settings['donotcache']); + if (!empty($donotcache)) { + file_put_contents(SQUID_ACLDIR . '/donotcache.acl', $donotcache); + $conf .= 'acl donotcache dstdomain "' . SQUID_ACLDIR . "/donotcache.acl\"\n"; + $conf .= 'no_cache deny donotcache'; + } + + return $conf; +} + +function squid_resync_upstream() { + global $config; + $settings = $config['installedpackages']['squidupstream']['config'][0]; + + $conf = ''; + if ($settings['proxy_forwarding'] == 'on') { + $conf .= "cache_peer {$settings['proxy_addr']} parent {$settings['proxy_port']} {$settings['icp_port']} "; + + if (!empty($settings['username'])) + $conf .= " login={$settings['username']}"; + if (!empty($settings['password'])) + $conf .= ":{$settings['password']}"; + } + + return $conf; +} + +function squid_resync_redirector() { + global $config; + + $httpav_enabled = ($config['installedpackages']['clamav']['config'][0]['scan_http'] == 'on'); + if ($httpav_enabled) { + $conf = "redirect_program /usr/local/bin/squirm\n"; + } else { + $conf = "# No redirector configured\n"; + } + return $conf; +} + +function squid_resync_nac() { + global $config, $valid_acls; + + $settings = $config['installedpackages']['squidnac']['config'][0]; + $webgui_port = $config['system']['webgui']['port']; + + $conf = <<<EOD + +# Setup some default acls +acl all src 0.0.0.0/0 +acl localhost src 127.0.0.1 +acl safeports port 21 70 80 210 280 443 488 563 591 631 777 901 $webgui_port 1025-65535 +acl sslports port 443 563 $webgui_port +acl manager proto cache_object +acl purge method PURGE +acl connect method CONNECT +acl dynamic urlpath_regex cgi-bin \? + +EOD; + + $allowed_subnets = explode("\n", base64_decode($settings['allowed_subnets'])); + $allowed = ""; + foreach ($allowed_subnets as $subnet) { + if(!empty($subnet)) { + $subnet = trim($subnet); + $allowed .= "$subnet "; + } + } + if (!empty($allowed)) { + $conf .= "acl allowed_subnets src $allowed\n"; + $valid_acls[] = 'allowed_subnets'; + } + + $options = array( 'unrestricted_hosts' => 'src', + 'banned_hosts' => 'src', + 'whitelist' => 'dstdom_regex -i', + 'blacklist' => 'dstdom_regex -i', + ); + foreach ($options as $option => $directive) { + $contents = base64_decode($settings[$option]); + if (!empty($contents)) { + file_put_contents(SQUID_ACLDIR . "/$option.acl", $contents); + $conf .= "acl $option $directive \"" . SQUID_ACLDIR . "/$option.acl\"\n"; + $valid_acls[] = $option; + } + } + + $conf .= <<<EOD +cache deny dynamic +http_access allow manager localhost +http_access deny manager +http_access allow purge localhost +http_access deny purge +http_access deny !safeports +http_access deny CONNECT !sslports + +# Always allow localhost connections +http_access allow localhost + +EOD; + + return $conf; +} + +function squid_resync_traffic() { + global $config, $valid_acls; + if(!is_array($valid_acls)) + return; + $settings = $config['installedpackages']['squidtraffic']['config'][0]; + $conf = ''; + + $up_limit = ($settings['max_upload_size'] ? $settings['max_upload_size'] : 0); + $down_limit = ($settings['max_download_size'] ? $settings['max_download_size'] : 0); + $conf .= "request_body_max_size $up_limit KB\n"; + $conf .= 'reply_body_max_size ' . ($down_limit * 1024) . " allow all\n"; + + // Only apply throttling past 10MB + // XXX: Should this really be hardcoded? + $threshold = 10 * 1024 * 1024; + $overall = $settings['overall_throttling']; + if (!isset($overall) || ($overall == 0)) + $overall = -1; + else + $overall *= 1024; + $perhost = $settings['perhost_throttling']; + if (!isset($perhost) || ($perhost == 0)) + $perhost = -1; + else + $perhost *= 1024; + $conf .= <<<EOD +delay_pools 1 +delay_class 1 2 +delay_parameters 1 $overall/$overall $perhost/$perhost +delay_initial_bucket_level 100 + +EOD; + + if(! empty($settings['unrestricted_hosts'])) { + foreach (array('unrestricted_hosts') as $item) { + if (in_array($item, $valid_acls)) + $conf .= "# Do not throttle unrestricted hosts\n"; + $conf .= "delay_access 1 deny $item\n"; + } + } + + if ($settings['throttle_specific'] == 'on') { + $exts = array(); + $binaries = 'bin,cab,sea,ar,arj,tar,tgz,gz,tbz,bz2,zip,exe,com'; + $cdimages = 'iso,bin,mds,nrg,gho,bwt,b5t,pqi'; + $multimedia = 'aiff?,asf,avi,divx,mov,mp3,mp4,mpe?g,qt,ra?m'; + foreach (array( 'throttle_binaries' => $binaries, + 'throttle_cdimages' => $cdimages, + 'throttle_multimedia' => $multimedia) as $field => $set) { + if ($settings[$field] == 'on') + $exts = array_merge($exts, explode(",", $set)); + } + + foreach (explode(",", $settings['throttle_others']) as $ext) { + if (!empty($ext)) $exts[] = $ext; + } + + $contents = ''; + foreach ($exts as $ext) + $contents .= "\.$ext\$\n"; + file_put_contents(SQUID_ACLDIR . '/throttle_exts.acl', $contents); + + $conf .= "# Throttle extensions matched in the url\n"; + $conf .= "acl throttle_exts urlpath_regex -i \"" . SQUID_ACLDIR . "/throttle_exts.acl\"\n"; + $conf .= "delay_access 1 allow throttle_exts\n"; + $conf .= "delay_access 1 deny all\n"; + } + else + $conf .= "delay_access 1 allow all\n"; + + return $conf; +} + +function squid_resync_auth() { + global $config, $valid_acls; + + $settings = $config['installedpackages']['squidauth']['config'][0]; + $settingsnac = $config['installedpackages']['squidnac']['config'][0]; + $settingsconfig = $config['installedpackages']['squid']['config'][0]; + $conf = ''; + + // Deny the banned guys before allowing the good guys + if(! empty($settingsnac['banned_hosts'])) { + if (squid_is_valid_acl('banned_hosts')) { + $conf .= "# These hosts are banned\n"; + $conf .= "http_access deny banned_hosts\n"; + } + } + if(! empty($settingsnac['banned_macs'])) { + if (squid_is_valid_acl('banned_macs')) { + $conf .= "# These macs are banned\n"; + $conf .= "http_access deny banned_macs\n"; + } + } + + // Unrestricted hosts take precendence over blacklist + if(! empty($settingsnac['unrestricted_hosts'])) { + if (squid_is_valid_acl('unrestricted_hosts')) { + $conf .= "# These hosts do not have any restrictions\n"; + $conf .= "http_access allow unrestricted_hosts\n"; + } + } + if(! empty($settingsnac['unrestricted_macs'])) { + if (squid_is_valid_acl('unrestricted_macs')) { + $conf .= "# These hosts do not have any restrictions\n"; + $conf .= "http_access allow unrestricted_macs\n"; + } + } + + // Whitelist and blacklist also take precendence over other allow rules + if(! empty($settingsnac['whitelist'])) { + if (squid_is_valid_acl('whitelist')) { + $conf .= "# Always allow access to whitelist domains\n"; + $conf .= "http_access allow whitelist\n"; + } + } + if(! empty($settingsnac['blacklist'])) { + if (squid_is_valid_acl('blacklist')) { + $conf .= "# Block access to blacklist domains\n"; + $conf .= "http_access deny blacklist\n"; + } + } + + $transparent_proxy = ($settingsconfig['transparent_proxy'] == 'on'); + $auth_method = (($settings['auth_method'] && !$transparent_proxy) ? $settings['auth_method'] : 'none'); + // Allow the remaining ACLs if no authentication is set + if ($auth_method == 'none') { + if ($settingsconfig['allow_interface'] == 'on') { + $conf .= "# Allow local network(s) on interface(s)\n"; + $allowed = array('localnet', 'allowed_subnets'); + $allowed = array_filter($allowed, 'squid_is_valid_acl'); + foreach ($allowed as $acl) + $conf .= "http_access allow $acl\n"; + } + } + else { + $noauth = implode(' ', explode("\n", base64_decode($settings['no_auth_hosts']))); + if (!empty($noauth)) { + $conf .= "acl noauth src $noauth\n"; + $valid_acls[] = 'noauth'; + } + + // Set up the external authentication programs + $auth_ttl = ($settings['auth_ttl'] ? $settings['auth_ttl'] : 60); + $processes = ($settings['auth_processes'] ? $settings['auth_processes'] : 5); + $prompt = ($settings['auth_prompt'] ? $settings['auth_prompt'] : 'Please enter your credentials to access the proxy'); + switch ($auth_method) { + case 'local': + $conf .= 'auth_param basic program /usr/local/libexec/squid/ncsa_auth ' . SQUID_PASSWD . "\n"; + break; + case 'ldap': + $port = (isset($settings['auth_port']) ? ":{$settings['auth_port']}" : ''); + $password = (isset($settings['ldap_pass']) ? "-w {$settings['ldap_pass']}" : ''); + $conf .= "auth_param basic program /usr/local/libexec/squid/squid_ldap_auth -v {$settings['ldap_version']} -b {$settings['ldap_basedomain']} -D {$settings['ldap_user']} $password -f \"{$settings['ldap_filter']}\" -u uid -P {$settings['auth_server']}$port\n"; + break; + case 'radius': + $port = (isset($settings['auth_port']) ? "-p {$settings['auth_server_port']}" : ''); + $conf .= "auth_param basic program /usr/local/libexec/squid/squid_radius_auth -w {$settings['radius_secret']} -h {$settings['auth_server']} $port\n"; + break; + case 'msnt': + $conf .= "auth_param basic program /usr/local/libexec/squid/msnt_auth\n"; + break; + } + $conf .= <<<EOD +auth_param basic children $processes +auth_param basic realm $prompt +auth_param basic credentialsttl $auth_ttl minutes +acl password proxy_auth REQUIRED + +EOD; + + // Onto the ACLs + $password = array('localnet', 'allowed_subnets'); + $passwordless = array('unrestricted_hosts'); + if ($settings['unrestricted_auth'] == 'on') { + // Even the unrestricted hosts should authenticate + $password = array_merge($password, $passwordless); + $passwordless = array(); + } + $passwordless[] = 'noauth'; + $password = array_filter($password, 'squid_is_valid_acl'); + $passwordless = array_filter($passwordless, 'squid_is_valid_acl'); + + // Allow the ACLs that don't need to authenticate + foreach ($passwordless as $acl) + $conf .= "http_access allow $acl\n"; + + // Allow the other ACLs as long as they authenticate + foreach ($password as $acl) + $conf .= "http_access allow password $acl\n"; + } + + if(!empty($config['installedpackages']['squid']['config'][0]['custom_options'])) { + $custopts = explode(";", ($config['installedpackages']['squid']['config'][0]['custom_options'])); + $conf .= "# Custom options\n"; + foreach ($custopts as $custopt) { + $conf .= $custopt."\n"; + } + } + + $conf .= "# Default block all to be sure\n"; + $conf .= "http_access deny all\n"; + + return $conf; +} + +function squid_resync_users() { + global $config; + + $users = $config['installedpackages']['squidusers']['config']; + $contents = ''; + if (is_array($users)) { + foreach ($users as $user) + $contents .= $user['username'] . ':' . crypt($user['password'], base64_encode($user['password'])) . "\n"; + } + file_put_contents(SQUID_PASSWD, $contents); + chown(SQUID_PASSWD, 'proxy'); + chmod(SQUID_PASSWD, 0600); +} + +function squid_resync() { + global $config; + $conf = squid_resync_general() . "\n"; + $conf .= squid_resync_cache() . "\n"; + $conf .= squid_resync_redirector() . "\n"; + $conf .= squid_resync_upstream() . "\n"; + $conf .= squid_resync_nac() . "\n"; + $conf .= squid_resync_traffic() . "\n"; + $conf .= squid_resync_auth(); + squid_resync_users(); + + /* make sure pinger is executable */ + if(file_exists("/usr/local/libexec/squid/pinger")) + exec("chmod a+x /usr/local/libexec/squid/pinger"); + + file_put_contents(SQUID_CONFBASE . '/squid.conf', $conf); + + $log_dir = $config['installedpackages']['squid']['config'][0]['log_dir'].'/'; + + if(!is_dir($log_dir)) { + log_error("Creating squid log dir $log_dir"); + make_dirs($log_dir); + squid_chown_recursive($log_dir, 'proxy', 'proxy'); + } + + squid_dash_z(); + + if (!is_service_running('squid')) { + log_error("Starting Squid"); + mwexec_bg("/usr/local/sbin/squid -D"); + } else { + log_error("Reloading Squid for configuration sync"); + mwexec("/usr/local/sbin/squid -k reconfigure"); + } + + filter_configure(); +} + +function squid_print_javascript_auth() { + global $config; + $transparent_proxy = ($config['installedpackages']['squid']['config'][0]['transparent_proxy'] == 'on'); + + // No authentication for transparent proxy + if ($transparent_proxy) { + $javascript = <<<EOD +<script language="JavaScript"> +<!-- +function on_auth_method_changed() { + document.iform.auth_method.disabled = 1; + document.iform.auth_server.disabled = 1; + document.iform.auth_server_port.disabled = 1; + document.iform.ldap_user.disabled = 1; + document.iform.ldap_version.disabled = 1; + document.iform.ldap_filter.disabled = 1; + document.iform.ldap_password.disabled = 1; + document.iform.ldap_basedomain.disabled = 1; + document.iform.radius_secret.disabled = 1; + document.iform.msnt_secondary.disabled = 1; + document.iform.auth_prompt.disabled = 1; + document.iform.auth_processes.disabled = 1; + document.iform.auth_ttl.disabled = 1; + document.iform.unrestricted_auth.disabled = 1; + document.iform.no_auth_hosts.disabled = 1; +} +--> +</script> + +EOD; + } + else { + $javascript = <<<EOD +<script language="JavaScript"> +<!-- +function on_auth_method_changed() { + var field = document.iform.auth_method; + var auth_method = field.options[field.selectedIndex].value; + + if (auth_method == 'none') { + document.iform.auth_server.disabled = 1; + document.iform.auth_server_port.disabled = 1; + document.iform.ldap_user.disabled = 1; + document.iform.ldap_version.disabled = 1; + document.iform.ldap_filter.disabled = 1; + document.iform.ldap_password.disabled = 1; + document.iform.ldap_basedomain.disabled = 1; + document.iform.radius_secret.disabled = 1; + document.iform.msnt_secondary.disabled = 1; + document.iform.auth_prompt.disabled = 1; + document.iform.auth_processes.disabled = 1; + document.iform.auth_ttl.disabled = 1; + document.iform.unrestricted_auth.disabled = 1; + document.iform.no_auth_hosts.disabled = 1; + } + else { + document.iform.auth_prompt.disabled = 0; + document.iform.auth_processes.disabled = 0; + document.iform.auth_ttl.disabled = 0; + document.iform.unrestricted_auth.disabled = 0; + document.iform.no_auth_hosts.disabled = 0; + } + + switch (auth_method) { + case 'local': + document.iform.auth_server.disabled = 1; + document.iform.auth_server_port.disabled = 1; + document.iform.ldap_user.disabled = 1; + document.iform.ldap_password.disabled = 1; + document.iform.ldap_version.disabled = 1; + document.iform.ldap_filter.disabled = 1; + document.iform.ldap_basedomain.disabled = 1; + document.iform.radius_secret.disabled = 1; + document.iform.msnt_secondary.disabled = 1; + break; + case 'ldap': + document.iform.auth_server.disabled = 0; + document.iform.auth_server_port.disabled = 0; + document.iform.ldap_user.disabled = 0; + document.iform.ldap_password.disabled = 0; + document.iform.ldap_version.disabled = 0; + document.iform.ldap_filter.disabled = 0; + document.iform.ldap_basedomain.disabled = 0; + document.iform.radius_secret.disabled = 1; + document.iform.msnt_secondary.disabled = 1; + break; + case 'radius': + document.iform.auth_server.disabled = 0; + document.iform.auth_server_port.disabled = 0; + document.iform.ldap_user.disabled = 1; + document.iform.ldap_password.disabled = 1; + document.iform.ldap_version.disabled = 1; + document.iform.ldap_filter.disabled = 1; + document.iform.ldap_basedomain.disabled = 1; + document.iform.radius_secret.disabled = 0; + document.iform.msnt_secondary.disabled = 1; + break; + case 'msnt': + document.iform.auth_server.disabled = 0; + document.iform.auth_server_port.disabled = 1; + document.iform.ldap_user.disabled = 1; + document.iform.ldap_password.disabled = 1; + document.iform.ldap_version.disabled = 1; + document.iform.ldap_filter.disabled = 1; + document.iform.ldap_basedomain.disabled = 1; + document.iform.radius_secret.disabled = 1; + document.iform.msnt_secondary.disabled = 0; + break; + } +} +--> +</script> + +EOD; + } + + print($javascript); +} + +function squid_print_javascript_auth2() { + print("<script language=\"JavaScript\">on_auth_method_changed()</script>\n"); +} + +function squid_generate_rules($type) { + global $config; + + $squid_conf = $config['installedpackages']['squid']['config'][0]; + if (!is_service_running('squid')) { + log_error("SQUID is installed but not started. Not installing redirect rules."); + return; + } + + if (($squid_conf['transparent_proxy'] != 'on') || ($squid_conf['allow_interface'] != 'on')) { + return; + } + + $ifaces = explode(",", $squid_conf['active_interface']); + $ifaces = array_map('convert_friendly_interface_to_real_interface_name', $ifaces); + $port = ($squid_conf['proxy_port'] ? $squid_conf['proxy_port'] : 3128); + + switch($type) { + case 'nat': + $rules .= "\n# Setup Squid proxy redirect\n"; + if ($squid_conf['private_subnet_proxy_off'] == 'on') { + foreach ($ifaces as $iface){ + $rules .= "no rdr on $iface proto tcp from any to { 192.168.0.0/16, 172.16.0.0/12, 10.0.0.0/8 } port 80\n"; + } + } + foreach ($ifaces as $iface){ + $rules .= "rdr on $iface proto tcp from any to !($iface) port 80 -> 127.0.0.1 port 80\n"; + }; + $rules .= "\n"; + break; + case 'filter': + foreach ($ifaces as $iface){ + $rules .= "# Setup squid pass rules for proxy\n"; + $rules .= "pass in quick on $iface proto tcp from any to !($iface) port 80 flags S/SA keep state\n"; + $rules .= "pass in quick on $iface proto tcp from any to !($iface) port $port flags S/SA keep state\n"; + $rules .= "\n"; + }; + break; + default: + break; + } + + return $rules; +} +?> |