<?php
# ------------------------------------------------------------------------------
/*  squidguard.inc
    2006-2011 Serg Dvoriancev

    part of pfSense (www.pfSense.com)

    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');
require_once('squidguard_configurator.inc');

# ------------------------------------------------------------------------------
# fields
define('F_NAME',             'name');
define('F_DEST',             'dest');
define('F_SOURCE',           'source');
define('F_DESTINATION',      'dest');
define('F_REWRITE',          'rewrite');
define('F_REDIRECT',         'redirect');
define('F_TIME',             'time');
define('F_OVERDESTINATION',  'overdestination');
define('F_OVERREWRITE',      'overrewrite');
define('F_OVERREDIRECT',     'overredirect');
define('F_TARGETURL',        'targeturl');
define('F_REPLACETO',        'replaceto');
define('F_TIMETYPE',         'timetype');
define('F_TIMEDAYS',         'timedays');
define('F_DATERANGE',        'daterange');
define('F_TIMERANGE',        'sg_timerange');
define('F_IPLIST',           'iplist');
define('F_DESCRIPTION',      'description');
define('F_EXPRESSIONS',      'expressions');
define('F_DOMAINS',          'domains');
define('F_URLS',             'urls');
define('F_DISABLED',         'disabled');
define('F_SQUIDGUARDENABLE', 'squidguard_enable');
define('F_BLACKLIST',        'blacklist');

# prefixes
define('PREF_UPTIME',        'uptime_');
define('PREF_UPTIME_DENY',   'uptimedeny_');
define('PREF_OVERTIME',      'overtime_');
define('PREF_OVERTIME_DENY', 'overtimedeny_');
# modules
define('MODULE_GENERAL',         'squidguardgeneral');
define('MODULE_DEFAULT',         'squidguarddefault');
define('MODULE_ACL',             'squidguardacl');
define('MODULE_DESTINATION',     'squidguarddest');
define('MODULE_REWRITE',         'squidguardrewrite');
define('MODULE_SOURCE',          'squidguardsrc');
define('MODULE_TIME',            'squidguardtime');
define('MODULE_LOG',             'squidguardlog');
# blacklist
define('BLACKLIST_DEFAULT_URL',  'http://squidguard.mesd.k12.or.us/blacklists.tgz'); # 5Mb
define('BLACKLIST_DEFAULT_URL1', 'http://www.shallalist.de/Downloads/shallalist.tar.gz'); # ~7Mb
define('BLACKLIST_TMP_FILE',     '/var/tmp/blacklists.tar.gz');
define('BLACKLIST_BTN_URL',      'Upload Url');
define('BLACKLIST_BTN_DEFAULT',  'Restore default');
define('BLACKLIST_LOGFILE',      'blacklist.log');
#
define('APPLY_BTN',              'Apply');
define('SAFESEARCH',             'safesearch');

# ==============================================================================
# Initialization
# ==============================================================================
# use global variable $squidguard_config, defined in squidguard_configurator.inc
sg_init(convert_pfxml_to_sgxml());

# ==============================================================================
# Validations
# ==============================================================================
function squidguard_validate($post, $input_errors)
{
    $submit = isset($_GET['submit']) ? $_GET['submit'] : $_POST['submit'];

    # check config if 'Apply'
    if ($submit === APPLY_BTN)  sg_check_config_data(&$input_errors);
}

# ------------------------------------------------------------------------------
# validate default
# ------------------------------------------------------------------------------
function squidguard_validate_default($post, $input_errors)
{
    squidguard_validate_acl($post, &$input_errors);
}

# ------------------------------------------------------------------------------
# validate acl
# ------------------------------------------------------------------------------
function squidguard_validate_acl($post, $input_errors)
{
    $pass_up = array();
    $deny_up = array();
    $pass_up_val = '';
    $pass_over = array();
    $deny_over = array();
    $pass_over_val = '';
    $id = get_item_id();

    # check name ('source')
    $name = trim($post[F_NAME]);
    if(!empty($name)) {
        # validate name format
        check_name_format($name, &$input_errors);

        # check unique name
        if (!sg_check_unique_name(F_ACLS, $name))
            $input_errors[] = "Name '$name' already exists.";

        # check reserved
        if (!sg_check_reserved_name($name))
             $input_errors[] = "Name '$name' is reserved.";

        # check source
        $sgx = array();
        $sgx[F_NAME] = $post[F_NAME];
        $sgx[F_SOURCE] = $post[F_SOURCE];
        sg_check_src($sgx, &$input_errors);
    }

    # store destinations to 'dest' value
    foreach ($post as $key => $val) {
        if (substr_count($key, PREF_UPTIME) != 0) {
            $name = str_replace(PREF_UPTIME, '', $key);
            if ($name) {
                switch($val) {
                    case "allow": $pass_up_val .= " $name";  break;
                    case "white": $pass_up_val .= " ^$name"; break;
                    case "deny" : $pass_up_val .= " !$name"; break;
                }
            }
        }
        elseif (substr_count($key, PREF_OVERTIME) != 0) {
            $name = str_replace(PREF_OVERTIME, '', $key);
            if ($name) {
                switch($val) {
                    case "allow": $pass_over_val .= " $name";  break;
                    case "white": $pass_over_val .= " ^$name"; break;
                    case "deny" : $pass_over_val .= " !$name"; break;
                }
            }
        }
    }

    # !ATTENTION! on pfSense XML config must be must(shell) be '!all' instead of 'none' - it is a must for correct work GUI

    # if not exists key 'all', then add 'none' - default 'deny all'
    if ((substr_count($pass_up_val, 'all') == 0)) {
         $pass_up_val .= ' !all';
    }

    if (!empty($pass_over_val) && (substr_count($pass_over_val, 'all') == 0)) {
         $pass_over_val .= ' !all';
    }

    if (empty($pass_over_val))
         $post[F_DEST] = "$pass_up_val";
    else $post[F_DEST] = "$pass_up_val [$pass_over_val]";

    # check redirect
    $errmsg = '';
    if (!sg_check_redirect($post[F_RMOD], $post[F_REDIRECT], &$errmsg)) {
         $input_errors[] = "Redirect info error. $errmsg";
    }
}

# ------------------------------------------------------------------------------
# validate times
# Format:
#    date:   <date(or range)><time (or range)> -- days not parsed (reset to *)
#    weekly: <day or *><time or range>         -- dates not parsed (reset to '')
# ------------------------------------------------------------------------------
function squidguard_validate_times($post, $input_errors)
{
    $id = get_item_id();

    # check name
    $name = trim($post[F_NAME]);
    if(!empty($name)) {
        check_name_format($name, &$input_errors);

        # check unique name
        if (!sg_check_unique_name(F_TIMES, $name))
             $input_errors[] = "Name '$name' already exists";

        # check reserved
        if (!sg_check_reserved_name($name))
             $input_errors[] = "Name '$name' is reserved.";
    }

    # --- check format ---
    $sgx = array();
    $sgx[F_NAME] = $post[F_NAME];
    $sgx[F_DESCRIPTION] = $post[F_DESCRIPTION];
    # fields of $post have 'fnameX' format
    for ($i=0; isset($post[F_TIMETYPE."$i"]); $i++) {
        # correct and update
        if (strtolower($post[F_TIMETYPE."$i"]) === "date") {
             $post[F_TIMEDAYS."$i"] = '*';
             # date cant be empty
             if (trim($post[F_DATERANGE."$i"]) == '') $post[F_DATERANGE."$i"] = "*.*.*";
        }
        else $post[F_DATERANGE."$i"] = '';

        if (trim($post[F_TIMERANGE."$i"]) == '') $post[F_TIMERANGE."$i"] = "00:00-23:59";

        # $post->xml
        $sgx_row = array();
        $sgx_row[F_TIMETYPE]  = $post[F_TIMETYPE."$i"];
        $sgx_row[F_TIMEDAYS]  = $post[F_TIMEDAYS."$i"];
        $sgx_row[F_DATERANGE] = $post[F_DATERANGE."$i"];
        $sgx_row[F_TIMERANGE] = $post[F_TIMERANGE."$i"];
        $sgx[F_ITEM][] = $sgx_row;
    }
    #
    sg_check_time($sgx, &$input_errors);

}

# ------------------------------------------------------------------------------
# validate destinations
# ------------------------------------------------------------------------------
function squidguard_validate_destination($post, $input_errors) {
    # check name
    $name = trim($post[F_NAME]);
    if(!empty($name)) {
        check_name_format($name, &$input_errors);

        # check unique name
        if (!sg_check_unique_name(F_DESTINATIONS, $name))
             $input_errors[] = "Name '$name' already exists";

        # check reserved
        if (!sg_check_reserved_name($name))
             $input_errors[] = "Name '$name' is reserved.";
    }

    # --- check format ---
    $sgx = array();
    $sgx[F_NAME]        = $post[F_NAME];
    $sgx[F_URLS]        = $post[F_URLS];
    $sgx[F_DOMAINS]     = $post[F_DOMAINS];
    $sgx[F_EXPRESSIONS] = $post[F_EXPRESSIONS];
    $sgx[F_RMOD]        = $post[F_RMOD];
    $sgx[F_REDIRECT]    = $post[F_REDIRECT];
    #
    sg_check_dest($sgx, &$input_errors);
}

# ------------------------------------------------------------------------------
# validate rewrites
# ------------------------------------------------------------------------------
function squidguard_validate_rewrite($post, $input_errors) {
         # check name
         $name = trim($post[F_NAME]);
         if(!empty($name)) {
            # check name format <char><symbols without space> - Ab123
            check_name_format($name, &$input_errors);

            # check unique name
            if (!sg_check_unique_name(F_REWRITES, $name))
                 $input_errors[] = "Name '$name' already exists";

            # check reserved
            if (!sg_check_reserved_name($name))
                 $input_errors[] = "Name '$name' is reserved.";
         }
}

# -----------------------------------------------------------------------------
# squidguard_resync
# -----------------------------------------------------------------------------
function squidguard_resync() {
    $upload_file = '';
    $submit = '';
    $url    = '';
    $proxy  = '';

    $submit = isset($_POST['submit'])          ? $_POST['submit']          : $_GET['submit'];
    $url    = isset($_POST[F_BLACKLISTURL])    ? $_POST[F_BLACKLISTURL]    : $_GET[F_BLACKLISTURL];
    $proxy  = isset($_POST['blacklist_proxy']) ? $_POST['blacklist_proxy'] : $_GET['blacklist_proxy'];

    sg_init(convert_pfxml_to_sgxml());

    # blacklist upload
    if ($submit == BLACKLIST_BTN_URL) {
        if ($url)
            sg_reconfigure_blacklist($url, $proxy);
    }

    # blacklist restore last (if exists)
#   if ($submit == BLACKLIST_BTN_DEFAULT) {
#       restore_arc_blacklist();
#   }

    # apply changes
    //if ($submit == APPLY_BTN) {
#           write_config('Update squidGuard options.'); # store, if not 'Save' button


        sg_reconfigure();
    //}

    squidguard_cron_install();
	squidguard_sync_on_changes();
}

# -----------------------------------------------------------------------------
# squidguard_resync_acl
# -----------------------------------------------------------------------------

function squidguard_resync_acl() {
    global $config; # !!! ORDER !!!

    $conf = $config['installedpackages'][MODULE_ACL]['config'];
    $id = isset($_POST['id']) ? $_POST['id'] : $_GET['id'];

    # --- sources part ---
    # move current id by order
    if (($id !== '') and is_array($conf)) {
        $src_new = array();

        foreach ($conf as $key => $src) {
            $order = $src[F_ORDER];
            # n_key: no_move=$key+$order or move=$order+$key
            $n_key = is_numeric($order) ? sprintf("%04d%04d", $order, $key) : sprintf("%04d%04d", $key, 9999);
            unset($src[F_ORDER]); # ! must be unset for display correct default position in 'select'!
            $src_new[$n_key] = $src;
        }
        # sort by key
        ksort($src_new);
        reset($src_new);

        $src_new = array_values($src_new); # make keys '0, 1, 2, ...'

        # renew config
        unset ($config['installedpackages'][MODULE_ACL]['config']);
        $config['installedpackages'][MODULE_ACL]['config'] = $src_new;
        write_config('Update squidguardacl config');

        # renew global $squidguard_config
        sg_init(convert_pfxml_to_sgxml());
    }
}

# =============================================================================
# common functions
# =============================================================================

# -----------------------------------------------------------------------------
# get_pkgconf/sgconf_items_list
# -----------------------------------------------------------------------------
function get_pkgconf_items_list($pkg_gui_name, $fieldname) {
    global $config;
    $res = '';

    $conf = $config['installedpackages'][$pkg_gui_name]['config'];
    if (is_array($conf))
        foreach($conf as $cf) $res[] = $cf[$fieldname];

    return $res;
}

function get_sgconf_items_list($data_group, $fieldname) {
    global $squidguard_config;
    $res = '';

    $conf = $squidguard_config[$data_group]['item'];
    if (is_array($conf))
        foreach($conf as $cf) $res[] = $cf[$fieldname];

    return $res;
}

# ==============================================================================
# Before form
# ==============================================================================
# squidguard_before_form
# ------------------------------------------------------------------------------
function squidguard_before_form($pkg) {
    $i=0;

    foreach($pkg['fields']['field'] as $field) {
        # blacklist controls
        switch ($field['fieldname']) {
#            case F_BLACKLISTURL:
#                $fld = &$pkg['fields']['field'][$i];
#                $fld['description'] .= make_grid_blacklist();        # insert to description custom controls
#            break;
            # Apply button
            case 'squidguard_enable':
                $fld = &$pkg['fields']['field'][$i];
                $fld['description'] .= make_grid_general_items();   # insert to description custom controls
            break;
        }
        $i++;
    }
}

# -----------------------------------------------------------------------------
# squidguard_before_form_acl
# -----------------------------------------------------------------------------
function squidguard_before_form_acl($pkg, $is_acl=true) {
    global $g;
    global $squidguard_config;

    $current_id   = '';
    $sources      = '';
    $source_items = '';
    $destinations = '';
    $dest_items   = '';
    $rewrites     = '';
    $rewr_names   = '';
    $times        = '';
    $time_names   = '';
    $acls_up      = '';
    $acls_over    = '';

    $current_id = isset($_POST['id']) ? $_POST['id'] : $_GET['id'];
    $current_id = ($current_id) ? $current_id : 0;

    # sources
    $source_items = get_sgconf_items_list(F_SOURCES, 'name');
    # generate sources list TODO: exclude used names from list, source name used in ACL unique
    $i=0;
    foreach($pkg['fields']['field'] as $field) {
        if ($field['fieldname'] == 'source') {
            $fld = &$pkg['fields']['field'][$i];
            if (is_array($source_items)) {
                foreach($source_items as $nm)
                    $fld['options']['option'][] = array('name'=>$nm, 'value'=>$nm);
            }
        }
        # order
        if (is_array($source_items) && $field['fieldname'] == 'order') {
            $fld = &$pkg['fields']['field'][$i];
            foreach($source_items as $nmkey => $nm)
            	$fld['options']['option'][] = array('name'=>$nm, 'value'=>$nmkey);
           	$fld['options']['option'][] = array('name'=>'--- Last ---', 'value'=>'9999');
           	$fld['options']['option'][] = array('name'=>'-----', 'value'=>''); # ! this is must be last !
        }
        $i++;
    }

    # destinations
    # acls pass ---> prepare data for destinations; dest format 'uptime_dests_list [overtime_dests_list]'
    $acl_dest = '';
    $acl_overdest = '';

    # acl & default
    if ($pkg['name'] !== MODULE_DEFAULT) {
         $acl_dest     = $squidguard_config[F_ACLS]['item'][$current_id][F_DESTINATIONNAME];
         $acl_overdest = $squidguard_config[F_ACLS]['item'][$current_id][F_OVERDESTINATIONNAME];
    }
    else $acl_dest = $squidguard_config[F_DEFAULT][F_DESTINATIONNAME];

    # acl dest ontime
    if ($acl_dest) {
        # 'none' > to '!all'
        $acl_dest = str_replace('none', '!all', $acl_dest);

        $pss = explode(' ', $acl_dest);
        foreach($pss as $val) {
            $name = $val;
            $name = str_replace('!', '', $name);
            $name = str_replace('^', '', $name);
            if (!empty($val)) {
                switch($val[0]) {
                    case '!': $acls_up[$name] = 'deny';  break;
                    case '^': $acls_up[$name] = 'white'; break;
                    default : $acls_up[$name] = 'allow'; break;
                }
            }
        }
    }

    # acl dest overtime
    if ($acl_overdest) {
        # 'none' > to '!all'
        $acl_overdest = str_replace('none', '!all', $acl_overdest);

        $pss = explode(' ', $acl_overdest);
        foreach($pss as $val) {
            $name = $val;
            $name = str_replace('!', '', $name);
            $name = str_replace('^', '', $name);
            if (!empty($val)) {
                switch($val[0]) {
                    case '!': $acls_over[$name] = 'deny';  break;
                    case '^': $acls_over[$name] = 'white'; break;
                    default : $acls_over[$name] = 'allow'; break;
                }
            }
        }
    }

    # --- Destinations ---
    # User destinations
    if ($squidguard_config[F_DESTINATIONS]) {
        foreach($squidguard_config[F_DESTINATIONS]['item'] as $dst) {
            $dest_items[] = array ('name'=>$dst[F_NAME],
                                   'upt_value'=>$acls_up[$dst[F_NAME]],
                                   'ovt_value'=>$acls_over[$dst[F_NAME]],
                                   'description'=>$dst[F_DESCRIPTION]);
        }
    }

    # Blacklist
    if ($squidguard_config[F_BLACKLISTENABLED] === 'on') {
        $blk_entries = sg_entries_blacklist();
        if (!empty($blk_entries)) {
            foreach($blk_entries as $dst) {
                $dest_items[] = array ('name'=>$dst,
                                       'upt_value'=>$acls_up[$dst],
                                       'ovt_value'=>$acls_over[$dst],
                                       'description'=>'');
            }
        }
    }

    # Default all
    $dest_items[] = array('name'=>FLT_DEFAULT_ALL,
                          'upt_value'=>$acls_up[FLT_DEFAULT_ALL],
                          'ovt_value'=>$acls_over[FLT_DEFAULT_ALL],
                          'description'=>'Default access');

    $i=0;
    foreach($pkg['fields']['field'] as $field) {
        if (($field['fieldname'] === 'dest')/* || ($field['fieldname'] == 'overdest')*/) {
            $fld = &$pkg['fields']['field'][$i];
            $fld['description'] .= make_grid_controls('', $dest_items, $is_acl);        # insert to description custom controls
        }
        $i++;
    }

    # rewrites
    $rewr_names = get_sgconf_items_list(F_REWRITES, 'name');
    $i=0;
    foreach($pkg['fields']['field'] as $field) {
        if (($field['fieldname'] == 'rewrite') || ($field['fieldname'] == 'overrewrite')) {
            $fld = &$pkg['fields']['field'][$i];
            $fld['options']['option'][] = array('name'=>'none (rewrite not defined)', 'value'=>'');
            if (is_array($rewr_names)) {
                foreach($rewr_names as $nm)
                    $fld['options']['option'][] = array('name'=>$nm, 'value'=>$nm);
            }
        }
        $i++;
    }

    # - set times field -
    $time_names = get_sgconf_items_list(F_TIMES, 'name');
    $i=0;
    foreach($pkg['fields']['field'] as $field) {
        if ($field['fieldname'] === 'time') {
            $fld = &$pkg['fields']['field'][$i];
            $fld['options']['option'][] = array('name'=>'none (time not defined)', 'value'=>'');
            if (is_array($time_names)) {
                foreach($time_names as $nm)
                    $fld['options']['option'][] = array('name'=>$nm, 'value'=>$nm);
            }
            break;
        }
        $i++;
    }
}

# -----------------------------------------------------------------------------
# make_grid_general_items
# -----------------------------------------------------------------------------
function make_grid_general_items($id = '')
{
    global $squidguard_config;

    $bg_color = "bgcolor='#dddddd'";
    $res = '';
    $res .= "<table width='100%'>";

    if ($id === '') {
        # Apply
        $res .= "<tr $bg_color><td><big>For saving configuration YOU need click button 'Save' on bottom of page</big></td></tr>
                 <tr><td><big>After changing configuration squidGuard you must <b><span style='color: #800000;'>apply all changes</span></b></big></td></tr>
                 <tr><td><input name='submit' type='submit' value='Apply'></td></tr>";

        # service state
        $sgstate = "<span style='color: #800000;'>STOPPED</span>";
        if (is_service_running("squidGuard"))
            $sgstate = "<span style='color: #008000;'>STARTED</span>";

        if (is_blacklist_update_started())
            $sgstate .= "<br><span style='color: #800000;'>Wait: began updating the blacklist. New data will be available after some time.<br>After the upgrade, it is necessary to check the configuration.</span>";
        $res .= "<tr $bg_color><td><big>SquidGuard service state: <b>$sgstate</b></big></td></tr>";
    }

    $res .= "</table>";
    return $res;
}

# -----------------------------------------------------------------------------
# make_grid_blacklist
# -----------------------------------------------------------------------------
function make_grid_blacklist() {
    $res = '';
    # button 'Upload URL' and button 'Restore last blacklist'
    $res = "<hr><input name='submit' value='" . BLACKLIST_BTN_URL  . "' type='submit'>";
    $res .= "&nbsp;<input name='submit' value='" . BLACKLIST_BTN_DEFAULT  . "' type='submit'>";
    return $res;
}

# -----------------------------------------------------------------------------
# make_grid_controls
# -----------------------------------------------------------------------------
function make_grid_controls($type, $items, $enable_overtime = true) {
    global $g;

    $res = '';
    $tbl = '';
    $color = '';
    $color2 = '';
    $x = 0;

    foreach($items as $item) {
        if ($x === 0) {
            $color = '';
            $color2 = 'style="background-color: #dddddd;"';
            $x = 1;
        }
        else {
            $color = 'style="background-color: #dddddd;"';
            $color2 = '';
            $x = 0;
        }

        $name    = trim($item['name']);
        $upt_val = $item['upt_value'];
        $ovt_val = $item['ovt_value'];
        $description = $item['description'];

        if (!$name) continue; # skip empty

        $sel = "selected=\"selected\"";
        $upt_A = $upt_B = $upt_C = $upt_D = '';
        switch($upt_val) {
            case "allow": $upt_B = $sel; break;
            case "white": $upt_C = $sel; break;
            case "deny" : $upt_D = $sel; break;
            default:      $upt_A = $sel; break;
        }

        $ovt_A = $ovt_B = $ovt_C= $ovt_D = '';
        switch($ovt_val) {
            case "allow": $ovt_B = $sel; break;
            case "white": $ovt_C = $sel; break;
            case "deny" : $ovt_D = $sel; break;
            default:      $ovt_A = $sel; break;
        }
        unset($sel);

        $tbl .= "<tr>";
        # uptime table
        $tnm  = PREF_UPTIME . $name;
        $tbl .= "<td $color></td>";
        $tbl .= "<td $color>$description [$name]</td>";
        $tbl .= "<td $color>access</td>";
        $tbl .= "<td $color><select id=$tnm name=\"$tnm\">";
        if ($name !== "all"/*substr_count($name, "all") === 0*/) {
            $tbl .= "<option value=none  name=\"----\"  $upt_A>----</option>";
            $tbl .= "<option value=white name=\"white\" $upt_C>whitelist</option>";
            $tbl .= "<option value=deny  name=\"deny\"  $upt_D>deny </option>";
            $tbl .= "<option value=allow name=\"allow\" $upt_B>allow</option>";
        }
        else {
            $tbl .= "<option value=allow name=\"allow\" $upt_B>allow</option>";
            $tbl .= "<option value=deny  name=\"deny\"  $upt_D>deny </option>";
        }
        $tbl .= "</td>";

        # overtime table
        if ($enable_overtime) {
            $tnm  = PREF_OVERTIME . $name;
            $tbl .= "<td $color></td>";
            $tbl .= "<td $color>$description [$name]</td>";
            $tbl .= "<td $color>access</td>";
            $tbl .= "<td $color><select id=$tnm name=\"$tnm\">";
            if ($name !== "all"/*substr_count($name, "all") === 0*/) {
                $tbl .= "<option value=none  name=\"----\"  $ovt_A>----</option>";
                $tbl .= "<option value=white name=\"white\" $ovt_C>whitelist</option>";
                $tbl .= "<option value=deny  name=\"deny\"  $ovt_D>deny </option>";
                $tbl .= "<option value=allow name=\"allow\" $ovt_B>allow</option>";
            }
            else {
                $tbl .= "<option value=allow name=\"allow\" $ovt_B>allow</option>";
                $tbl .= "<option value=deny  name=\"deny\"  $ovt_D>deny </option>";
            }
            $tbl .= "</td>";
        }
        $tbl .= "</tr>";
    }

    # header
    if (!empty($tbl)) {
        $color = 'style="background-color: #dddddd;"';
        $thdr = '';
        $hdr1up = "<big>Target Categories</big>";
        $hdr1ov = "<big>Target Categories for off-time</big>";
        $hds3   = "ACCESS: 'whitelist' - always pass; 'deny' - block; 'allow' - pass, if not blocked.";
        if ($enable_overtime) {
            $thdr .= "<tr><td colspan='8' align=left>$hds3</td></tr>";
            $thdr .= "<tr $color><th colspan='4' align=middle>$hdr1up</th><th colspan='4' align=middle>$hdr1ov</th></tr>";
            $thdr .= "<tr $color><td colspan='4' align=middle></td><td colspan='4' align=middle>If <b>'Time'</b> not defined, this is column will be ignored.</td></tr>";
            # formatting
            $thdr .= "<tr><td/><td width='35%'/><td/><td/><td/><td width='35%'/><td/><td/></tr>";
        }
        else {
            $thdr .= "<tr><td colspan='4' align=left>$hds3<hr></tr>";
            $thdr .= "<tr $color><th colspan='4' align=middle>$hdr1up</th></tr>";
            # formatting
            $thdr .= "<tr><td width='5%'/><td/><td width='5%'/><td width='10%'/></tr>";
        }

        $res .= "<table cellspacing='0' width='100%'> $thdr $tbl </table>";

        $rstyle = "";
        $ha = "<div class='listtopic'>" .
              "<span onClick='document.getElementById(\"destrules\").style.display = \"block\";' style=\"cursor: pointer;\">" .
              "<font size='-12'><big>Target Rules List (click here)</big>&nbsp;" .
              "<img src='/themes/{$g['theme']}/images/icons/icon_pass.gif' title='Show rules'>&nbsp;" .
              "</span>" .
               "<span style=\"cursor: pointer;\">" .
              "<img src='/themes/{$g['theme']}/images/icons/icon_block.gif' title='Hide rules' onClick='document.getElementById(\"destrules\").style.display = \"none\";'>" .
              "</span>" .
              "</div>";
        $res = "<hr>$ha<div id=\"destrules\" style='DISPLAY: none'>$res</div>";

    }
    return $res;
}

# -----------------------------------------------------------------------------
# check unique name
# -----------------------------------------------------------------------------
function sg_check_unique_name($module_id, $name, $log='') {
    $res = true;
    $id = (isset($_GET['id'])) ? $_GET['id'] : $_POST['id'];

    $name_list = get_sgconf_items_list($module_id, 'name');
    $name_val = (is_array($name_list)) ? array_count_values($name_list) : array();
    $count_names = $name_val[$name];

    # if count names = 1, then check if add new record with this name(not valid) / or this is a self record(valid)
    # else if count names > 1 - not valid
    if ($count_names === 1) {
        $nm_key = array_search($name, $name_list);
        # if this new record
        if ($id >= count($name_list)) { $res = false; }
        # if not self record
        elseif ($nm_key && (intval($id) !== intval($nm_key))) { $res = false; }
    }
    elseif($count_names > 1) $res = false; # bad - not unique

    return $res;
}

# -----------------------------------------------------------------------------
# check unique name
# -----------------------------------------------------------------------------
function sg_check_reserved_name($name, $log='')
{
    $res = true;
    $reserved = array("acl", "all", "allow", "dbhome", "default", "dest", "in-addr", "log", "logdir", "none", "pass", "rew", "src", "url", "user");

    if (in_array(strtolower(trim($name)), $reserved)) {
        $res = false;
    }

    return $res;
}
# ------------------------------------------------------------------------------
# Install & deinstall
# ------------------------------------------------------------------------------

function squidguard_install_command() {
    if (!is_service_running("squidGuard")) {
        sg_init(convert_pfxml_to_sgxml());
        sg_check_system();

        # generate squidGuard blacklist entries file (check with squidGuard PORT)
#        conf_mount_rw();
        $blklist_file = SQUIDGUARD_BLK_FILELISTPATH;

     
        if (!file_exists($blklist_file)) {
        	# if blacklist not exists, then copy default db from samples
#            $entries = array("ads", "aggressive", "audio-video", "drugs", "gambling", "hacking", "mail", "porn", "proxy", "violence", "warez");
#            file_put_contents($blklist_file, implode("\n", $entries));
        }
        set_file_access(SQUIDGUARD_WORKDIR, OWNER_NAME, 0755);
        set_file_access(SQUIDGUARD_DBHOME, OWNER_NAME, 0755);
#        conf_mount_ro();

        sg_reconfigure();
    }
}

function squidguard_deinstall_command() {
    # remove entries from squid config
    squid_reconfigure('remove redirector options');

    # Note: When you reinstall should remain Database

    # remove package and his depends
    #mwexec("pkg_delete squidGuard-1.2.0_1");
    #mwexec("rm -rf " . SQUIDGUARD_WORKDIR);
    # i known't, really need delete blacklist base?
    #mwexec("rm -rf " . SQUIDGUARD_DBHOME);
    #mwexec("/bin/rm -f " . SQUIDGUARD_CONFBASE . "/squidGuard*");
}

# ------------------------------------------------------------------------------
# SquidGuard print JavaSrcript
# ------------------------------------------------------------------------------
function squidGuard_print_javascript() {
    $javascript = '';

    $xml = ($_GET["xml"] !== '') ? $_GET["xml"] : $_POST["xml"];

    # squidguard_default.xml
    if ($xml === "squidguard_default.xml") {
        $javascript .= "\n<script language='JavaScript'>";
        $javascript .= "\n<!--";
        $javascript .= "\n    document.iform.dest.disabled=1;";
        $javascript .= "\n//-->";
        $javascript .= "\n</script>";
    } # if

    # squidguard_acl.xml
    if ($xml === "squidguard_acl.xml") {
        $javascript .= "\n<script language='JavaScript'>";
        $javascript .= "\n<!--";
        $javascript .= "\n    document.iform.dest.disabled=1;";
        $javascript .= "\n//-->";
        $javascript .= "\n</script>";

    } # if

    if ($xml === "squidguard_time.xml") {
        $javascript .= "\n<script language='JavaScript'>";
        $javascript .= "\n<!--";
        $javascript .= "\n    function on_updatecontrols() {";
        $javascript .= "\n        for (var i=0; i<99; i++) {";
        $javascript .= "\n            var elm = document.iform.elements['timetype' + i];";
        $javascript .= "\n            if (elm) {";
        $javascript .= "\n                document.iform.elements['timetype' + i].onclick = on_updatecontrols;";
        $javascript .= "\n                if (document.iform.elements['timetype' + i].value == 'weekly') {";
        $javascript .= "\n                    document.iform.elements['timedays' + i].disabled = 0;";
        $javascript .= "\n                    document.iform.elements['daterange' + i].disabled = 1;";
        $javascript .= "\n                }";
        $javascript .= "\n                else {";
        $javascript .= "\n                    document.iform.elements['timedays' + i].disabled = 1;";
        $javascript .= "\n                    document.iform.elements['daterange' + i].disabled = 0;";
        $javascript .= "\n                }";
        $javascript .= "\n            }";
        $javascript .= "\n        }";
        $javascript .= "\n    }";
        $javascript .= "\n    on_updatecontrols();";
        $javascript .= "\n    ";
        $javascript .= "\n//-->";
        $javascript .= "\n</script>";
    }

    print($javascript);
}

# ==============================================================================
# Converter
# ==============================================================================
# convert_pfxml_to_sgxml
# -----------------------------------------------------------------
function convert_pfxml_to_sgxml() {

    capability_update_source();

    global $config;
    conf_mount_rw();
    $sgxml = array();
    $pfxml = $config['installedpackages'][MODULE_GENERAL]['config'][0];

    $sgxml[F_LOGDIR]           = SQUIDGUARD_LOGDIR;
    $sgxml[F_DBHOME]           = SQUIDGUARD_DBHOME;
    $sgxml[F_BINPATH]          = SQUIDGUARD_BINPATH;
    $sgxml[F_WORKDIR]          = SQUIDGUARD_WORKDIR;
    $sgxml[F_SGCONF_XML]       = SQUIDGUARD_WORKDIR . SQUIDGUARD_CONFXML;
    $sgxml[F_ENABLED]          = $pfxml[F_SQUIDGUARDENABLE];
    $sgxml[F_BLACKLISTENABLED] = $pfxml[F_BLACKLIST];
    $sgxml[F_BLACKLISTURL]     = $pfxml[F_BLACKLISTURL];
    $sgxml[F_SOURCES]          = convert_pfxml_to_sgxml_source($config);
    $sgxml[F_DESTINATIONS]     = convert_pfxml_to_sgxml_destination($config);
    $sgxml[F_REWRITES]         = convert_pfxml_to_sgxml_rewrite($config);
    $sgxml[F_TIMES]            = convert_pfxml_to_sgxml_time($config);
    $sgxml[F_ACLS]             = convert_pfxml_to_sgxml_acl($config);
    $sgxml[F_DEFAULT]          = convert_pfxml_to_sgxml_default($config);

    # log
    $sgxml[F_ENABLELOG]    = $pfxml['enable_log']    == 'on' ? 'on' : 'off';
    $sgxml[F_ENABLEGUILOG] = $pfxml['enable_guilog'] == 'on' ? 'on' : 'off';
    $sgxml[F_LOGROTATION]  = $pfxml['log_rotation']  == 'on' ? 'on' : 'off';

    #Clean adversiting
    $sgxml[F_ADV_BLANKIMG] = $pfxml['adv_blankimg']  == 'on' ? 'on' : 'off';
	

    # other
    $lanip = $config['interfaces']['lan']['ipaddr'];
    $sgxml[F_CURRENT_LAN_IP] = $lanip;

    # transparent
    $squidxml = $config['installedpackages']['squid']['config'][0];
    if($squidxml['transparent_proxy'] == 'on') {
        $guiport = $config['system']['webgui']['port'];
        $guiprotocol = $config['system']['webgui']['protocol'];

        $sgxml[F_SQUID_TRANSPARENT_MODE] = 'on';
        $sgxml[F_CURRENT_GUI_PORT]  = $guiport;
        $sgxml[F_CURRENT_GUI_PROTO] = $guiprotocol;
    } else {
        unset($sgxml[F_SQUID_TRANSPARENT_MODE]);
        unset($sgxml[F_CURRENT_GUI_PORT]);
        unset($sgxml[F_CURRENT_GUI_PROTO]);
    }

    # store cfg cache
    $cfg_xml = dump_xml_config($sgxml, F_SQUIDGUARD);
    file_put_contents($sgxml[F_SGCONF_XML], $cfg_xml);
    conf_mount_ro();

    return $sgxml;
}

# -----------------------------------------------------------------
# convert_pfxml_to_sgxml_source
# sgxml_source: [name][ip][desc][log]
# -----------------------------------------------------------------
# Changes 04-01-2008 :
# Source fields moved to ACL page. Source page - will remove
# But in XML internal config nothing to change
# -----------------------------------------------------------------
# Changes 21-07-2008 :
# Source IP and domain move to one field, added 'username'.
function convert_pfxml_to_sgxml_source($pfconfig) {
    $sgxml = array();
    $pfxml = $pfconfig['installedpackages'][MODULE_ACL]['config'];
    if (is_array($pfxml)) {
        foreach($pfxml as $pfx) {
            $sgx = array();
            $sgx[F_NAME]        = $pfx['name'];
            $sgx[F_SOURCE]      = $pfx[F_SOURCE];
            $sgx[F_LOG]         = $pfx[F_ENABLELOG];
            $sgx[F_DESCRIPTION] = $pfx['description'];
            $sgxml[F_ITEM][]    = $sgx;
         }
    }
    return $sgxml;
}

# -----------------------------------------------------------------
# convert_pfxml_to_sgxml_destination
# sgxml_destination: [name][domains][expr][urls][redir][desc][log]
# -----------------------------------------------------------------
function convert_pfxml_to_sgxml_destination($pfconfig) {
    $sgxml = array();
    $pfxml = $pfconfig['installedpackages'][MODULE_DESTINATION]['config'];
    if (is_array($pfxml)) {
        foreach($pfxml as $pfx) {
            $sgx = array();
            $sgx[F_NAME]         = $pfx['name'];
            $sgx[F_URLS]         = $pfx['urls'];
            $sgx[F_DOMAINS]      = $pfx[F_DOMAINS];
            $sgx[F_EXPRESSIONS]  = $pfx['expressions'];
            $sgx[F_RMOD]         = isset($pfx[F_RMOD]) ? $pfx[F_RMOD] : RMOD_NONE;
            $sgx[F_REDIRECT]     = $pfx[F_REDIRECT];
            $sgx[F_DESCRIPTION]  = $pfx['description'];
            $sgx[F_LOG]          = $pfx[F_ENABLELOG];
            $sgxml[F_ITEM][]     = $sgx;
        }
    }
    return $sgxml;
}

# -----------------------------------------------------------------
# convert_pfxml_to_sgxml_rewrite
# sgxml_rewrite: [name][desc][log][items(array): [targeturl][replaceto]]
# -----------------------------------------------------------------
function convert_pfxml_to_sgxml_rewrite($pfconfig) {
    $sgxml = array();

    $pfxml = $pfconfig['installedpackages'][MODULE_REWRITE]['config'];
    if (is_array($pfxml)) {
        foreach($pfxml as $pfx) {
            $sgx = array();
            $sgx[F_NAME]        = $pfx['name'];
            $sgx[F_DESCRIPTION] = $pfx['description'];
            $sgx[F_LOG]         = $pfx[F_ENABLELOG];

            if (is_array($pfx['row'])) {
                foreach($pfx['row'] as $pfx_row) {
                    $sgx_row = array();
                    $sgx_row[F_TARGETURL] = $pfx_row['targeturl'];
                    $sgx_row[F_REPLACETO] = $pfx_row['replaceto'];

                    $mode = '';
                    if (strpos($pfx_row[F_MODE], 'nocase') !== false) $mode .= 'i';
                    if (strpos($pfx_row[F_MODE], 'redirect') !== false) $mode .= 'r';
                    $sgx_row[F_MODE] = $mode; # ! sys options only  - not for GUI !

                    $sgx[F_ITEM][] = $sgx_row;
                 }
            }

            $sgxml[F_ITEM][] = $sgx;
        }
    }

    # additional: google safeserach
    $sgxml[F_ITEM][] = squidguard_adt_rewrite_safesrch();

    return $sgxml;
}

# -----------------------------------------------------------------
# convert_pfxml_to_sgxml_time
# sgxml_time: [name][desc][items(array): [timetype][timedays][daterange][timerange]]
# -----------------------------------------------------------------
function convert_pfxml_to_sgxml_time($pfconfig) {
    $sgxml = array();

    $pfxml = $pfconfig['installedpackages'][MODULE_TIME]['config'];
    if (is_array($pfxml)) {
        foreach($pfxml as $pfx) {
            $sgx = array();
            $sgx[F_NAME]                = $pfx[F_NAME];
            $sgx[F_DESCRIPTION]        = $pfx[F_DESCRIPTION];

            if (is_array($pfx['row'])) {
                foreach($pfx['row'] as $pfx_row) {
                    $sgx_row = array();
                    $sgx_row[F_TIMETYPE]  = $pfx_row[F_TIMETYPE];
                    $sgx_row[F_TIMEDAYS]  = $pfx_row[F_TIMEDAYS];
                    $sgx_row[F_DATERANGE] = $pfx_row[F_DATERANGE];
                    $sgx_row[F_TIMERANGE] = $pfx_row[F_TIMERANGE];
                    $sgx[F_ITEM][] = $sgx_row;
                }
            }

            $sgxml[F_ITEM][] = $sgx;
        }
    }

    return $sgxml;
}

# -----------------------------------------------------------------
# convert_pfxml_to_sgxml_acl
# sgxml_acl: [name][desc][disabled][timename][destname][redirect][rewritename][over_redirect][over_rewritename]
# -----------------------------------------------------------------
function convert_pfxml_to_sgxml_acl($pfconfig) {
    $sgxml = array();

    $pfxml = $pfconfig['installedpackages'][MODULE_ACL]['config'];
    if (is_array($pfxml)) {
        foreach($pfxml as $pfx) {
            $sgx = array();
            $sgx[F_NAME]          = $pfx[F_NAME];    # [04-01-2008] new ver
            $sgx[F_DESCRIPTION]   = $pfx[F_DESCRIPTION];
            $sgx[F_DISABLED]      = $pfx[F_DISABLED];
            $sgx[F_TIMENAME]      = $pfx[F_TIME];
            $sgx[F_REDIRECT]      = $pfx[F_REDIRECT];
            $sgx[F_RMOD]          = isset($pfx[F_RMOD]) ? $pfx[F_RMOD] : RMOD_NONE;
            $sgx[F_REWRITENAME]   = $pfx[F_REWRITE];
            $sgx[F_LOG]           = $pfx[F_ENABLELOG];
            $sgx[F_NOTALLOWINGIP] = $pfx[F_NOTALLOWINGIP];
            $sgx[F_ORDER]         = $pfx[F_ORDER];

            # for overtime
            $sgx[F_OVERREDIRECT]    = $pfx[F_REDIRECT]; # disabled ->- $pfx[F_OVERREDIRECT];
            $sgx[F_OVERREWRITENAME] = $pfx[F_OVERREWRITE];

            # destinations
            if (strpos($pfx['dest'], '[') === false) {
                $sgx[F_DESTINATIONNAME]     = trim($pfx['dest']);
                $sgx[F_OVERDESTINATIONNAME] = '';
            }
            else {
                $sgx[F_DESTINATIONNAME]     = trim( substr($pfx['dest'], 0, strpos($pfx['dest'], '[')) );
                $sgx[F_OVERDESTINATIONNAME] = trim( strstr($pfx['dest'], '[') );
                $sgx[F_OVERDESTINATIONNAME] = trim( str_replace(']', '', $sgx[F_OVERDESTINATIONNAME]) );
                $sgx[F_OVERDESTINATIONNAME] = trim( str_replace('[', '', $sgx[F_OVERDESTINATIONNAME]) );
            }

            # !ATTENTION! '!all' must be convert to 'none'
            $sgx[F_DESTINATIONNAME]     = str_replace("!all", "none", $sgx[F_DESTINATIONNAME]);
            $sgx[F_OVERDESTINATIONNAME] = str_replace("!all", "none", $sgx[F_OVERDESTINATIONNAME]);

            # if empty - adding 'none'
            if (!$sgx[F_DESTINATIONNAME])     $sgx[F_DESTINATIONNAME] = "none";
            if (!$sgx[F_OVERDESTINATIONNAME]) $sgx[F_OVERDESTINATIONNAME] = "none";

            # safesearch
           if ($pfx[SAFESEARCH] === 'on') {
               # assign safesearch rewrite
               $sgx[F_REWRITENAME] = SAFESEARCH;
               $sgx[F_OVERREWRITENAME] = SAFESEARCH;
           }

            $sgxml[F_ITEM][] = $sgx;
        }
    }
    return $sgxml;
}

# -----------------------------------------------------------------
# convert_pfxml_to_sgxml_default
# sgxml_acl: [name][desc][disabled][timename][destname][redirect][rewritename][over_redirect][over_rewritename]
# -----------------------------------------------------------------
function convert_pfxml_to_sgxml_default($pfconfig) {
    $pfxml = $pfconfig['installedpackages'][MODULE_DEFAULT]['config'];

    $pfx = $pfxml[0];
    $sgx = array();
    $sgx[F_NAME]        = 'default';
    $sgx[F_DESCRIPTION] = '';
    $sgx[F_DISABLED]    = '';
    $sgx[F_TIMENAME]    = $pfx[F_TIME];
    $sgx[F_RMOD]        = isset($pfx[F_RMOD]) ? $pfx[F_RMOD] : RMOD_INT_ERRORPAGE;
    $sgx[F_REDIRECT]    = $pfx[F_REDIRECT];
    $sgx[F_REWRITENAME] = $pfx[F_REWRITE];
    $sgx[F_LOG]         = $pfx[F_ENABLELOG];
    $sgx[F_NOTALLOWINGIP] = $pfx[F_NOTALLOWINGIP];

    # destinations
    if (strpos($pfx['dest'], '[') === false)
         $sgx[F_DESTINATIONNAME] = trim($pfx['dest']);
    else $sgx[F_DESTINATIONNAME] = trim( substr($pfx['dest'], 0, strpos($pfx['dest'], '[')) );

    # !ATTENTION! '!all' must be convert to 'none'
    $sgx[F_DESTINATIONNAME] = str_replace("!all", "none", $sgx[F_DESTINATIONNAME]);

    # if empty - adding 'none'
    if (!$sgx[F_DESTINATIONNAME]) $sgx[F_DESTINATIONNAME] = "none";

    # safesearch
    if ($pfx[SAFESEARCH] === 'on') {
        # assign safesearch rewrite
        $sgx[F_REWRITENAME] = SAFESEARCH;
    }

    return $sgx;
}

# =================================================================
# Capability
# =================================================================
# convert old ver. squidguard config.
function capability_update_source() {
	# ! use global var $config ONLY !
    global $config;
    $conf_changed = false;

    if (isset($config['installedpackages'][MODULE_ACL]['config'])) {
        $tconf = &$config['installedpackages'][MODULE_ACL]['config'];
        foreach($tconf as $key => $cfg) {
            if (isset($cfg['iplist'])) {
                $tconf[$key][F_SOURCE] .= " " . $cfg['iplist'];
                unset($tconf[$key]['iplist']);
                $conf_changed = true;
            }
            if (isset($cfg[F_DOMAINS])) {
                $tconf[$key][F_SOURCE] .= " " . $cfg[F_DOMAINS];
                unset($tconf[$key][F_DOMAINS]);
                $conf_changed = true;
            }
        }

        if ($conf_changed) write_config('Convert old ver. squidguard config.');
    }
}
# ------------------------------------------------------------------
# get_item_id - get item 'id' from get/post
# ------------------------------------------------------------------
function get_item_id()
{
    return  isset($_GET['id']) ? $_GET['id'] : $_POST['id'];
}

# ==================================================================
# additional
# ==================================================================
# safesearch rewrite
function squidguard_adt_rewrite_safesrch()
{
    $res = array();

    # safesearch
    $res[F_NAME] = SAFESEARCH;
    $res[F_DESCRIPTION] = "Google, Yandex safesearch";
    $res[F_LOG]         = 'on';
    squidguard_adt_safesrch_add(&$res[F_ITEM]);

    return $res;
}

function squidguard_adt_safesrch_add($rewrite_item)
{
    if (!is_array($rewrite_item)) $rewrite_item = array();

    # Google
    $rewrite_item[] = array(F_TARGETURL => '(google\..*/search?.*q=.*)', F_REPLACETO => '\1\&safe=active', F_MODE => 'i');
    $rewrite_item[] = array(F_TARGETURL => '(google\..*/images.*q=.*)',  F_REPLACETO => '\1\&safe=active', F_MODE => 'i');
    $rewrite_item[] = array(F_TARGETURL => '(google\..*/groups.*q=.*)',  F_REPLACETO => '\1\&safe=active', F_MODE => 'i');
    $rewrite_item[] = array(F_TARGETURL => '(google\..*/news.*q=.*)',    F_REPLACETO => '\1\&safe=active', F_MODE => 'i');

    # Yandex
    $rewrite_item[] = array(F_TARGETURL => '(yandex\..*/yandsearch?.*text=.*)', F_REPLACETO => '\1\&fyandex=1', F_MODE => 'i');

    # Yahoo
    $rewrite_item[] = array(F_TARGETURL => '(search\.yahoo\..*/search.*p=.*)', F_REPLACETO => '\1\&vm=r&v=1', F_MODE => 'i');

    # MSN Live search, Bing
    $rewrite_item[] = array(F_TARGETURL => '(search\.live\..*/.*q=.*)',  F_REPLACETO => '\1\&adlt=strict', F_MODE => 'i');
    $rewrite_item[] = array(F_TARGETURL => '(search\.msn\..*/.*q=.*)',   F_REPLACETO => '\1\&adlt=strict', F_MODE => 'i');
    $rewrite_item[] = array(F_TARGETURL => '(\.bing\..*/.*q=.*)',        F_REPLACETO => '\1\&adlt=strict', F_MODE => 'i');

    return $rewrite_item;
}

# log dump
function squidguard_logdump($filename, $lnoffset, $lncount, $reverse)
{
    define('LOGSHOW_BUFSIZE', '262144');
    $cnt = '';

    if (file_exists($filename)) {
        $fh = fopen($filename, "r");
        if ($fh) {
            $fsize = filesize($filename);

            # take LOGSHOW_BUFSIZE bytes from end
            if ($fsize > LOGSHOW_BUFSIZE)
                   fseek($fh, -LOGSHOW_BUFSIZE, SEEK_END);
            $cnt = fread($fh,  LOGSHOW_BUFSIZE);

            fclose($fh);
        }
    }

    $cnt = explode( "\n", $cnt );

    # delete broken first element
    array_shift($cnt);

    # offset must be >= 0 and can't be > count($cnt)
    $lnoffset = $lnoffset >= 0 ? $lnoffset : 0;
    $lnoffset = ($lnoffset + $lncount) < count($cnt) ? $lnoffset : 0;

    $pos = ($lncount + $lnoffset);

    # take elements from end of array
    $cnt = array_slice($cnt, -$pos, $lncount);

    # reverse array order
    if ($reverse) $cnt = array_reverse( $cnt );

    return $cnt;
}

# dump SG log
function squidguard_filterdump($lnoffset, $lncount, $reverse)
{
    $res  = array();
    $cont = squidguard_logdump(SQUIDGUARD_LOGDIR . '/squidGuard.log', &$lnoffset, $lncount, $reverse);

    foreach($cont as $cn) {
        $cn = explode(" ", trim($cn), 4);
        $res[] = array( "{$cn[0]} {$cn[1]}", $cn[3] );
    }

    return $res;
}

# dump SG Gui log
function squidguard_guidump($lnoffset, $lncount, $reverse)
{
    $res  = array();
    $cont = squidguard_logdump(SQUIDGUARD_LOGDIR . SQUIDGUARD_CONFLOGFILE, &$lnoffset, $lncount, $reverse);

    foreach($cont as $cn) {
        $cn = explode(" ", trim($cn), 4);
        $res[] = array( "{$cn[0]} {$cn[1]}", $cn[3] );
    }

    return $res;
}

# dump SG blocked
function squidguard_blockdump($lnoffset, $lncount, $reverse)
{
    $res  = array();
    $cont = squidguard_logdump(SQUIDGUARD_LOGDIR . '/' . SQUIDGUARD_LOGFILE, &$lnoffset, $lncount, $reverse);

    foreach($cont as $cn) {
        $cn = explode(" ", trim($cn), 9);
        $res[] = array( "{$cn[0]} {$cn[1]}", $cn[5], $cn[4], "{$cn[3]} {$cn[6]} {$cn[7]} {$cn[8]}");
    }

    return $res;
}

# get squid config list
function squidguard_squid_conflist( )
{
    $fname = SQUID_CONFIGFILE;
    $res   = "";

    if (file_exists( $fname ))
         $res = file_get_contents( $fname );
    else $res = "File '$fname' not found.";

    return $res;
}

# get squidguard config list
function squidguard_conflist( )
{
    $fname = SQUIDGUARD_CONFBASE . SQUIDGUARD_CONFIGFILE;
    $res   = "";

    if (file_exists( $fname ))
         $res = file_get_contents( $fname );
    else $res = "File '$fname' not found.";

    return $res;
}

# get blacklist list
function squidguard_blacklist_list()
{
    $res   = "";
    $fname = SQUIDGUARD_BLK_FILELISTPATH;

    $res .= "<table class='tabcont' width='100%' border='0' cellpadding='0' cellspacing='0'>\n";
    $res .= "<tr><td class='listtopic'>Name</td><td class='listtopic'>Domains</td><td class='listtopic'>Urls</td><td class='listtopic'>Expressions</td></tr>\n";
    if (file_exists($fname)) {
        $cont = explode("\n", file_get_contents($fname));
        foreach($cont as $cn) {
            $ph = "/var/db/squidGuard/$cn";

            if (file_exists($ph)) {
                $dm = "&nbsp;";
                $ur = "&nbsp;";
                $ex = "&nbsp;";

                if (file_exists("$ph/domains"))     $dm = "domains";
                if (file_exists("$ph/urls"))        $ur = "urls";
                if (file_exists("$ph/expressions")) $ex = "expressions";

                $res .= "<tr><td class='listlr'>$cn</td><td class='listr'>$dm</td><td class='listr'>$ur</td><td class='listr'>$ex</td></tr>";
            }
        }
    }
    $res .= "</table>";

    return $res;
}

// ##### The following part is based on the code of pfblocker #####

/* Uses XMLRPC to synchronize the changes to a remote node */
function squidguard_sync_on_changes() {
	global $config, $g;
	$varsyncenablexmlrpc = $config['installedpackages']['squidguardsync']['config'][0]['varsyncenablexmlrpc'];
	$varsynctimeout = $config['installedpackages']['squidguardsync']['config'][0]['varsynctimeout'];	

	// if checkbox is NOT checked do nothing
	if(!$varsyncenablexmlrpc) {
		return;
	}
 
	log_error("SquidGuard: Starting XMLRPC process (squidguard_do_xmlrpc_sync) with timeout {$varsynctimeout} seconds.");
	
	// if checkbox is checked get IP and password of the destination hosts
	foreach ($config['installedpackages']['squidguardsync']['config'] as $rs ){
		foreach($rs['row'] as $sh){
			// if checkbox is NOT checked do nothing
			if($sh['varsyncdestinenable']) {
				$varsyncprotocol 	= $sh['varsyncprotocol'];
				$sync_to_ip 		= $sh['varsyncipaddress'];
				$password   		= $sh['varsyncpassword'];
				$varsyncport 		= $sh['varsyncport'];
				// check if all credentials are complete for this host
				if($password && $sync_to_ip && $varsyncport && $varsyncprotocol) {
					squidguard_do_xmlrpc_sync($sync_to_ip, $password, $varsyncport, $varsyncprotocol);
				}
				else {
					log_error("SquidGuard: XMLRPC Sync with {$sh['varsyncipaddress']} has incomplete credentials. No XMLRPC Sync done!");
				}
			}
			else {
				log_error("SquidGuard: XMLRPC Sync with {$sh['varsyncipaddress']} is disabled");
			}
		}
	}
	log_error("SquidGuard: Finished XMLRPC process (squidguard_do_xmlrpc_sync).");
}

/* Do the actual XMLRPC sync */
function squidguard_do_xmlrpc_sync($sync_to_ip, $password, $varsyncport, $varsyncprotocol) {
	global $config, $g;

	$varsynctimeout = $config['installedpackages']['squidguardsync']['config'][0]['varsynctimeout'];

	if($varsynctimeout == '' || $varsynctimeout == 0) {
		$varsynctimeout = 150;
	}

	// log_error("SquidGuard: Starting XMLRPC process (squidguard_do_xmlrpc_sync) with timeout {$varsynctimeout} seconds.");

	if(!$password)
		return;

	if(!$sync_to_ip)
		return;
	
	if(!$varsyncport)
		return;

	if(!$varsyncprotocol)
		return;
	
	// Check and choose correct protocol type, port number and IP address
	$synchronizetoip .= "$varsyncprotocol" . '://';
	$port = "$varsyncport";

	$synchronizetoip .= $sync_to_ip;

	/* xml will hold the sections to sync */
	$xml = array();
	$xml['squidguardgeneral'] = $config['installedpackages']['squidguardgeneral'];
	$xml['squidguardacl'] = $config['installedpackages']['squidguardacl'];
	$xml['squidguarddefault'] = $config['installedpackages']['squidguarddefault'];
	$xml['squidguarddest'] = $config['installedpackages']['squidguarddest'];
	$xml['squidguardrewrite'] = $config['installedpackages']['squidguardrewrite'];
	$xml['squidguardtime'] = $config['installedpackages']['squidguardtime'];
	
	/* assemble xmlrpc payload */
	$params = array(
		XML_RPC_encode($password),
		XML_RPC_encode($xml)
	);

	/* set a few variables needed for sync code borrowed from filter.inc */
	$url = $synchronizetoip;
	log_error("SquidGuard: Beginning squidguard XMLRPC sync with {$url}:{$port}.");
	$method = 'pfsense.merge_installedpackages_section_xmlrpc';
	$msg = new XML_RPC_Message($method, $params);
	$cli = new XML_RPC_Client('/xmlrpc.php', $url, $port);
	$cli->setCredentials('admin', $password);
		if($g['debug'])
			$cli->setDebug(1);
		/* send our XMLRPC message and timeout after $varsynctimeout seconds */
		$resp = $cli->send($msg, $varsynctimeout);
		if(!$resp) {
			$error = "A communications error occurred while squidguard was attempting XMLRPC sync with {$url}:{$port}.";
			log_error("SquidGuard: $error");
			file_notice("sync_settings", $error, "squidguard Settings Sync", "");
		} elseif($resp->faultCode()) {
			$cli->setDebug(1);
			$resp = $cli->send($msg, $varsynctimeout);
			$error = "An error code was received while squidguard XMLRPC was attempting to sync with {$url}:{$port} - Code " . $resp->faultCode() . ": " . $resp->faultString();
			log_error("SquidGuard: $error");
			file_notice("sync_settings", $error, "squidguard Settings Sync", "");
		} else {
			log_error("SquidGuard: XMLRPC has synced data successfully with {$url}:{$port}.");
		}
	
	/* tell squidguard to reload our settings on the destionation sync host. */
	$method = 'pfsense.exec_php';
	$execcmd  = "require_once('/usr/local/pkg/squidguard.inc');\n";
	// pfblocker just needed one fuction to reload after XMLRPC. squidguard needs more so we point to a fuction below which contains all fuctions
	$execcmd .= "squidguard_all_after_XMLRPC_resync();";
	
	/* assemble xmlrpc payload */
	$params = array(
		XML_RPC_encode($password),
		XML_RPC_encode($execcmd)
	);

	log_error("SquidGuard XMLRPC is reloading data on {$url}:{$port}.");
	$msg = new XML_RPC_Message($method, $params);
	$cli = new XML_RPC_Client('/xmlrpc.php', $url, $port);
	$cli->setCredentials('admin', $password);
		$resp = $cli->send($msg, $varsynctimeout);
		if(!$resp) {
			$error = "A communications error occurred while squidguard was attempting XMLRPC sync with {$url}:{$port} (exec_php).";
			log_error($error);
			file_notice("sync_settings", $error, "squidguard Settings Sync", "");
		} elseif($resp->faultCode()) {
			$cli->setDebug(1);
			$resp = $cli->send($msg, $varsynctimeout);
			$error = "An error code was received while squidguard XMLRPC was attempting to sync with {$url}:{$port} - Code " . $resp->faultCode() . ": " . $resp->faultString();
			log_error($error);
			file_notice("sync_settings", $error, "squidguard Settings Sync", "");
		} else {
			log_error("SquidGuard: XMLRPC has reloaded data successfully on {$url}:{$port} (exec_php).");
		}

}

// ##### The part above is based on the code of pfblocker #####

// This function restarts all other needed functions after XMLRPC so that the content of .XML + .INC will be written in the files
// Adding more functions will increase the time to sync
function squidguard_all_after_XMLRPC_resync() {
	
	squidguard_resync_acl();
	squidguard_resync();
	
	log_error("SquidGuard: Finished XMLRPC process. It should be OK. For more information look at the host which started sync.");
}

?>