<?php

/**
 * Administrator Plugin - Options Page
 *
 * This script creates separate page, that allows to review and modify
 * SquirrelMail configuration file.
 *
 * @author Philippe Mingo
 * @copyright &copy; 1999-2006 The SquirrelMail Project Team
 * @license http://opensource.org/licenses/gpl-license.php GNU Public License
 * @version $Id$
 * @package plugins
 * @subpackage administrator
 */

/**
 * parse the config file
 *
 * @param string $cfg_file
 * @access private
 */
function parseConfig( $cfg_file ) {

    global $newcfg;

    $cfg = file( $cfg_file );
    $mode = '';
    $l = count( $cfg );
    $modifier = FALSE;
    $arraykey = 0;

    for ($i=0;$i<$l;$i++) {
        $line = trim( $cfg[$i] );
        $s = strlen( $line );
        for ($j=0;$j<$s;$j++) {
            switch ( $mode ) {
            case '=':
                if ( $line{$j} == '=' ) {
                    // Ok, we've got a right value, lets detect what type
                    $mode = 'D';
                } else if ( $line{$j} == ';' ) {
                    // hu! end of command
                    $key = $mode = '';
                }
                break;
            case 'K':
                // Key detect
                if ( $line{$j} == ' ' ) {
                    $mode = '=';
                } else {
                    $key .= $line{$j};
                    // FIXME: this is only pour workaround for plugins[] array.
                    if ($line{$j}=='[' && $line{($j+1)}==']') {
                        $key .= $arraykey;
                        $arraykey++;
                    }
                }
                break;
            case ';':
                // Skip until next ;
                if ( $line{$j} == ';' ) {
                    $mode = '';
                }
                break;
            case 'S':
                if ( $line{$j} == '\\' ) {
                    $value .= $line{$j};
                    $modifier = TRUE;
                } else if ( $line{$j} == $delimiter && $modifier === FALSE ) {
                    // End of string;
                    $newcfg[$key] = $value . $delimiter;
                    $key = $value = '';
                    $mode = ';';
                } else {
                    $value .= $line{$j};
                    $modifier = FALSE;
                }
                break;
            case 'N':
                if ( $line{$j} == ';' ) {
                    $newcfg{$key} = $value;
                    $key = $mode = '';
                } else {
                    $value .= $line{$j};
                }
                break;
            case 'C':
                // Comments
                if ( $s > $j + 1  &&
                     $line{$j}.$line{$j+1} == '*/' ) {
                    $mode = '';
                    $j++;
                }
                break;
            case 'D':
                // Delimiter detect
                switch ( $line{$j} ) {
                case '"':
                case "'":
                    // Double quote string
                    $delimiter = $value = $line{$j};
                    $mode = 'S';
                    break;
                case ' ':
                    // Nothing yet
                    break;
                default:
                    if ( strtoupper( substr( $line, $j, 4 ) ) == 'TRUE'  ) {
                        // Boolean TRUE
                        $newcfg{$key} = 'TRUE';
                        $key = '';
                        $mode = ';';
                    } else if ( strtoupper( substr( $line, $j, 5 ) ) == 'FALSE'  ) {
                        $newcfg{$key} = 'FALSE';
                        $key = '';
                        $mode = ';';
                    } else {
                        // Number or function call
                        $mode = 'N';
                        $value = $line{$j};
                    }
                }
                break;
            default:
                if ( $line{$j} == '$' ) {
                    // We must detect $key name
                    $mode = 'K';
                    $key = '$';
                } else if ( $s < $j + 2 ) {
                } else if ( strtoupper( substr( $line, $j, 7 ) ) == 'GLOBAL ' ) {
                    // Skip untill next ;
                    $mode = ';';
                    $j += 6;
                } else if ( $line{$j}.$line{$j+1} == '/*' ) {
                    $mode = 'C';
                    $j++;
                } else if ( $line{$j} == '#' || $line{$j}.$line{$j+1} == '//' ) {
                    // Delete till the end of the line
                    $j = $s;
                }
            }
        }
    }
}

/**
 * Change paths containing SM_PATH to admin-friendly paths
 * relative to the config dir, i.e.:
 *    ''                          --> <empty string>
 *    SM_PATH . 'images/logo.gif' --> ../images/logo.gif
 *    '/absolute/path/logo.gif'   --> /absolute/path/logo.gif
 *    'http://whatever/'          --> http://whatever
 *  Note removal of quotes in returned value
 *
 * @param string $old_path path that has to be converted
 * @return string new path
 * @access private
 */
function change_to_rel_path($old_path) {
    $new_path = str_replace("SM_PATH . '", "../", $old_path);
    $new_path = str_replace("../config/","", $new_path);
    $new_path = str_replace("'","", $new_path);
    return $new_path;
}

/**
 * Change relative path (relative to config dir) to
 *  internal SM_PATH, i.e.:
 *     empty_string            --> ''
 *     ../images/logo.gif      --> SM_PATH . 'images/logo.gif'
 *     images/logo.gif         --> SM_PATH . 'config/images/logo.gif'
 *     /absolute/path/logo.gif --> '/absolute/path/logo.gif'
 *     http://whatever/        --> 'http://whatever'
 *
 * @param string $old_path path that has to be converted
 * @return string new path
 * @access private
*/
function change_to_sm_path($old_path) {
    if ( $old_path === '' || $old_path == "''" ) {
        return "''";
    } elseif ( preg_match("/^(\/|http)/", $old_path) ) {
        return "'" . $old_path . "'";
    } elseif ( preg_match("/^(\$|SM_PATH)/", $old_path) ) {
        return $old_path;
    }

    $new_path = '';
    $rel_path = explode("../", $old_path);
    if ( count($rel_path) > 2 ) {
        // Since we're relative to the config dir,
        // more than 1 ../ puts us OUTSIDE the SM tree.
        // get full path to config.php, then pop the filename
        $abs_path = explode('/', realpath (SM_PATH . 'config/config.php'));
        array_pop ($abs_path);
        foreach ( $rel_path as $subdir ) {
            if ( $subdir === '' ) {
                array_pop ($abs_path);
            } else {
                array_push($abs_path, $subdir);
            }
        }
        foreach ($abs_path as $subdir) {
            $new_path .= $subdir . '/';
        }
        $new_path = "'$new_path'";
    } elseif ( count($rel_path) > 1 ) {
        // we're within the SM tree, prepend SM_PATH
        $new_path = str_replace('../',"SM_PATH . '", $old_path . "'");
    } else {
        // Last, if it's a relative path without a .. prefix,
        // we're somewhere within the config dir, so prepend
        //  SM_PATH . 'config/
        $new_path = "SM_PATH . 'config/" . $old_path . "'";
    }
    return $new_path;
}


/* ---------------------- main -------------------------- */

/** @ignore */
define('SM_PATH','../../');

/* SquirrelMail required files. */
require_once(SM_PATH . 'include/validate.php');
require_once(SM_PATH . 'functions/imap.php');
require_once(SM_PATH . 'plugins/administrator/defines.php');
require_once(SM_PATH . 'plugins/administrator/auth.php');

global $data_dir, $username;

if ( !adm_check_user() ) {
    header('Location: ' . SM_PATH . 'src/options.php') ;
    exit;
}

displayPageHeader($color, 'None');

$newcfg = array( );

foreach ( $defcfg as $key => $def ) {
    $newcfg[$key] = '';
}

$cfgfile = SM_PATH . 'config/config.php';
parseConfig( SM_PATH . 'config/config_default.php' );
parseConfig( $cfgfile );

$colapse = array( 'Titles' => 'off',
                  'Group1' => getPref($data_dir, $username, 'adm_Group1', 'off' ),
                  'Group2' => getPref($data_dir, $username, 'adm_Group2', 'on' ),
                  'Group3' => getPref($data_dir, $username, 'adm_Group3', 'on' ),
                  'Group4' => getPref($data_dir, $username, 'adm_Group4', 'on' ),
                  'Group5' => getPref($data_dir, $username, 'adm_Group5', 'on' ),
                  'Group6' => getPref($data_dir, $username, 'adm_Group6', 'on' ),
                  'Group7' => getPref($data_dir, $username, 'adm_Group7', 'on' ),
                  'Group8' => getPref($data_dir, $username, 'adm_Group8', 'on' ),
                  'Group9' => getPref($data_dir, $username, 'adm_Group9', 'on' ),
                  'Group10' => getPref($data_dir, $username, 'adm_Group10', 'on' ),
                  'Group11' => getPref($data_dir, $username, 'adm_Group11', 'on' ) );

/* look in $_GET array for 'switch' */
if ( sqgetGlobalVar('switch', $switch, SQ_GET) ) {
    if ( $colapse[$switch] == 'on' ) {
        $colapse[$switch] = 'off';
    } else {
        $colapse[$switch] = 'on';
    }
    setPref($data_dir, $username, "adm_$switch", $colapse[$switch] );
}

echo '<form action="options.php" method="post" name="options">' .
     '<center><table width="95%" bgcolor="'.$color[5].'"><tr><td>'.
     '<table width="100%" cellspacing="0" bgcolor="'.$color[4].'">'.
     '<tr bgcolor="'.$color[5].'"><th colspan="2">'.
     _("Configuration Administrator").'</th></tr>'.
     '<tr bgcolor="'.$color[5].'"><td colspan="2" align="center"><small>'.
     _("Note: it is recommended that you configure your system using conf.pl, and not this plugin. conf.pl contains additional information regarding the purpose of variables and appropriate values, as well as additional verification steps.").
     '<br />'.
     _("Run or consult conf.pl should you run into difficulty with your configuration.").
     '</small></td></tr>';


$act_grp = 'Titles';  /* Active group */

foreach ( $newcfg as $k => $v ) {
    $l = strtolower( $v );
    $type = SMOPT_TYPE_UNDEFINED;
    $n = substr( $k, 1 );
    $n = str_replace( '[', '_', $n );
    $n = str_replace( ']', '_', $n );
    $e = 'adm_' . $n;
    $name = $k;
    $size = 50;
    if ( isset( $defcfg[$k] ) ) {
        $name = $defcfg[$k]['name'];
        $type = $defcfg[$k]['type'];
        if ( isset( $defcfg[$k]['size'] ) ) {
            $size = $defcfg[$k]['size'];
        } else {
            $size = 40;
        }
    } else if ( $l == 'true' ) {
        $v = 'TRUE';
        $type = SMOPT_TYPE_BOOLEAN;
    } else if ( $l == 'false' ) {
        $v = 'FALSE';
        $type = SMOPT_TYPE_BOOLEAN;
    } else if ( $v{0} == "'" ) {
        $type = SMOPT_TYPE_STRING;
    } else if ( $v{0} == '"' ) {
        $type = SMOPT_TYPE_STRING;
    }

    if ( substr( $k, 0, 7 ) == '$theme[' ) {
        $type = SMOPT_TYPE_THEME;
    } else if ( substr( $k, 0, 9 ) == '$plugins[' ) {
        $type = SMOPT_TYPE_PLUGINS;
    } else if ( substr( $k, 0, 13 ) == '$ldap_server[' ) {
        $type = SMOPT_TYPE_LDAP;
    } else if ( substr( $k, 0, 9 ) == '$fontsets' ||
	substr( $k, 0, 13 ) == '$aTemplateSet' ) {
        $type = SMOPT_TYPE_CUSTOM;
    }

    if ( $type == SMOPT_TYPE_TITLE || $colapse[$act_grp] == 'off' ) {

        switch ( $type ) {
        case SMOPT_TYPE_LDAP:
        case SMOPT_TYPE_CUSTOM:
        case SMOPT_TYPE_PLUGINS:
        case SMOPT_TYPE_THEME:
        case SMOPT_TYPE_HIDDEN:
            break;
        case SMOPT_TYPE_EXTERNAL:
            echo "<tr><td>$name</td><td><b>" .
                 $defcfg[$k]['value'] .
                 '</b></td></tr>';
            break;
        case SMOPT_TYPE_TITLE:
            if ( $colapse[$k] == 'on' ) {
                $sw = '(+)';
            } else {
                $sw = '(-)';
            }
            echo '<tr bgcolor="'.$color[0].'"><th colspan="2">'.
                 "<a href=\"options.php?switch=$k\" style=\"text-decoration:none\">".
                 '<b>'.$sw.'</b></a> '.$name.'</th></tr>';
            $act_grp = $k;
            break;
        case SMOPT_TYPE_COMMENT:
            $v = substr( $v, 1, strlen( $v ) - 2 );
            echo "<tr><td>$name</td><td>".
                 "<b>$v</b>";
            $newcfg[$k] = "'$v'";
            if ( isset( $defcfg[$k]['comment'] ) ) {
                echo ' &nbsp; ' . $defcfg[$k]['comment'];
            }
            echo "</td></tr>\n";
            break;
        case SMOPT_TYPE_INTEGER:
            /* look for variable $e in POST, fill into $v */
            if ( sqgetGlobalVar($e, $new_v, SQ_POST) ) {
                $v = intval( $new_v );
                $newcfg[$k] = $v;
            }
            echo "<tr><td>$name</td><td>".
                 "<input size=\"10\" name=\"adm_$n\" value=\"$v\" />";
            if ( isset( $defcfg[$k]['comment'] ) ) {
                echo ' &nbsp; ' . $defcfg[$k]['comment'];
            }
            echo "</td></tr>\n";
            break;
        case SMOPT_TYPE_NUMLIST:
            if (  sqgetGlobalVar($e, $new_v, SQ_POST) ) {
                $v = $new_v;
                $newcfg[$k] = $v;
            }
            echo "<tr><td>$name</td><td>";
            echo "<select name=\"adm_$n\">";
            foreach ( $defcfg[$k]['posvals'] as $kp => $vp ) {
                echo "<option value=\"$kp\"";
                if ( $kp == $v ) {
                    echo ' selected="selected"';
                }
                echo ">$vp</option>";
            }
            echo '</select>';
            if ( isset( $defcfg[$k]['comment'] ) ) {
                echo ' &nbsp; ' . $defcfg[$k]['comment'];
            }
            echo "</td></tr>\n";
            break;
        case SMOPT_TYPE_STRLIST:
            if (  sqgetGlobalVar($e, $new_v, SQ_POST) ) {
                $v = '"' . $new_v . '"';
                $newcfg[$k] = $v;
            }
            echo "<tr><td>$name</td><td>".
                 "<select name=\"adm_$n\">";
            foreach ( $defcfg[$k]['posvals'] as $kp => $vp ) {
                echo "<option value=\"$kp\"";
                if ( $kp == substr( $v, 1, strlen( $v ) - 2 ) ) {
                    echo ' selected="selected"';
                }
                echo ">$vp</option>";
            }
            echo '</select>';
            if ( isset( $defcfg[$k]['comment'] ) ) {
                echo ' &nbsp; ' . $defcfg[$k]['comment'];
            }
            echo "</td></tr>\n";
            break;

        case SMOPT_TYPE_TEXTAREA:
            if (  sqgetGlobalVar($e, $new_v, SQ_POST) ) {
                $v = '"' . $new_v . '"';
                $newcfg[$k] = str_replace( "\n", '', $v );
            }
            echo "<tr><td valign=\"top\">$name</td><td>".
                 "<textarea cols=\"$size\" rows=\"4\" name=\"adm_$n\">" . substr( $v, 1, strlen( $v ) - 2 ) . "</textarea>";
            if ( isset( $defcfg[$k]['comment'] ) ) {
                echo ' &nbsp; ' . $defcfg[$k]['comment'];
            }
            echo "</td></tr>\n";
            break;
        case SMOPT_TYPE_STRING:
            if (  sqgetGlobalVar($e, $new_v, SQ_POST) ) {
                $v = '"' . $new_v . '"';
                $newcfg[$k] = $v;
            }
            if ( $v == '""' && isset( $defcfg[$k]['default'] ) ) {
                $v = "'" . $defcfg[$k]['default'] . "'";
                $newcfg[$k] = $v;
            }
            echo "<tr><td>$name</td><td>".
                 "<input size=\"$size\" name=\"adm_$n\" value=\"" . substr( $v, 1, strlen( $v ) - 2 ) . '" />';
            if ( isset( $defcfg[$k]['comment'] ) ) {
                echo ' &nbsp; ' . $defcfg[$k]['comment'];
            }
            echo "</td></tr>\n";
            break;
        case SMOPT_TYPE_BOOLEAN:
            if (  sqgetGlobalVar($e, $new_v, SQ_POST) ) {
                $v = $new_v;
                $newcfg[$k] = $v;
            } else {
                $v = strtoupper( $v );
            }
            if ( $v == 'TRUE' ) {
                $ct = ' checked="checked"';
                $cf = '';
            } else {
                $ct = '';
                $cf = ' checked="checked"';
            }
            echo "<tr><td>$name</td><td>" .
                 "<input$ct type=\"radio\" name=\"adm_$n\" value=\"TRUE\" />" . _("Yes") .
                 "<input$cf type=\"radio\" name=\"adm_$n\" value=\"FALSE\" />" . _("No");
            if ( isset( $defcfg[$k]['comment'] ) ) {
                echo ' &nbsp; ' . $defcfg[$k]['comment'];
            }
            echo "</td></tr>\n";
            break;
        case SMOPT_TYPE_PATH:
            if (  sqgetGlobalVar($e, $new_v, SQ_POST) ) {
                // FIXME: fix use of $data_dir in $attachment_dir
                $v = change_to_sm_path($new_v);
                $newcfg[$k] = $v;
            }
            if ( $v == "''" && isset( $defcfg[$k]['default'] ) ) {
               $v = change_to_sm_path($defcfg[$k]['default']);
               $newcfg[$k] = $v;
            }
            echo "<tr><td>$name</td><td>".
                 "<input size=\"$size\" name=\"adm_$n\" value=\"" . change_to_rel_path($v) . '" />';
            if ( isset( $defcfg[$k]['comment'] ) ) {
                 echo ' &nbsp; ' . $defcfg[$k]['comment'];
            }
            echo "</td></tr>\n";
            break;
        default:
            echo "<tr><td>$name</td><td>" .
                 "<b><i>$v</i></b>";
            if ( isset( $defcfg[$k]['comment'] ) ) {
                echo ' &nbsp; ' . $defcfg[$k]['comment'];
            }
            echo "</td></tr>\n";
        }
    }
}

/* Special Themes Block */
if ( $colapse['Group7'] == 'off' ) {
    $i = 0;
    echo '<tr><th>' . _("Theme Name") .
         '</th><th>' . _("Theme Path") .
         '</th></tr>';
    while ( isset( $newcfg["\$theme[$i]['NAME']"] ) ) {
        $k1 = "\$theme[$i]['NAME']";
        $e1 = "theme_name_$i";
        if (  sqgetGlobalVar($e, $v1, SQ_POST) ) {
            $v1 = '"' . str_replace( '\"', '"', $v1 ) . '"';
            $v1 = '"' . str_replace( '"', '\"', $v1 ) . '"';
            $newcfg[$k1] = $v1;
        } else {
            $v1 = $newcfg[$k1];
        }
        $k2 = "\$theme[$i]['PATH']";
        $e2 = "theme_path_$i";
        if (  sqgetGlobalVar($e, $v2, SQ_POST) ) {
            $v2 = change_to_sm_path($v2);
            $newcfg[$k2] = $v2;
        } else {
            $v2 = $newcfg[$k2];
        }
        $name = substr( $v1, 1, strlen( $v1 ) - 2 );
        $path = change_to_rel_path($v2);
        echo '<tr>'.
             "<td align=\"right\">$i. <input name=\"$e1\" value=\"$name\" size=\"30\" /></td>".
             "<td><input name=\"$e2\" value=\"$path\" size=\"40\" /></td>".
             "</tr>\n";
        $i++;

    }
}

/* Special Plugins Block */
if ( $colapse['Group8'] == 'on' ) {
    $sw = '(+)';
} else {
    $sw = '(-)';
}
echo '<tr bgcolor="'.$color[0].'"><th colspan="2">'.
     '<a href="options.php?switch=Group8" style="text-decoration:none"><b>'.
     $sw.'</b></a> '._("Plugins").'</th></tr>';

if ( $colapse['Group8'] == 'off' ) {

    $plugpath = SM_PATH . 'plugins/';
    if ( file_exists($plugpath) ) {
        $fd = opendir( $plugpath );
        $op_plugin = array();
        $p_count = 0;
        while (false !== ($file = readdir($fd))) {
            if ($file != '.' && $file != '..' && $file != 'CVS' && is_dir($plugpath . $file) ) {
                $op_plugin[] = $file;
                $p_count++;
            }
        }
        closedir($fd);
        asort( $op_plugin );

        /* Lets get the plugins that are active */
        $plugins = array();
        if ( sqgetGlobalVar('plg', $v, SQ_POST) ) {
            foreach ( $op_plugin as $plg ) {
                if (  sqgetGlobalVar("plgs_$plg", $v2, SQ_POST) && $v2 == 'on' ) {
                    $plugins[] = $plg;
                }
            }
            $i = 0;
            foreach ( $plugins as $plg ) {
                $k = "\$plugins[$i]";
                $newcfg[$k] = "'$plg'";
                $i++;
            }
            while ( isset( $newcfg["\$plugins[$i]"] ) ) {
                $k = "\$plugins[$i]";
                $newcfg[$k] = '';
                $i++;
            }
        } else {
            $i = 0;
            while ( isset( $newcfg["\$plugins[$i]"] ) ) {
                $k = "\$plugins[$i]";
                $v = $newcfg[$k];
                $plugins[] = substr( $v, 1, strlen( $v ) - 2 );
                $i++;
            }
        }
        echo '<tr><td colspan="2"><input type="hidden" name="plg" value="on" /><center><table>';
        foreach ( $op_plugin as $plg ) {
            if ( in_array( $plg, $plugins ) ) {
                $sw = ' checked="checked"';
            } else {
                $sw = '';
            }
            echo '<tr><td>';
            if (file_exists(SM_PATH . "plugins/$plg/README")) {
                echo "<a href=\"../$plg/README\" target=\"_blank\">$plg</a>";
            } else {
                echo $plg;
            }
            echo "</td>\n".
                 "<td><input$sw type=\"checkbox\" name=\"plgs_$plg\" /></td>".
                 "</tr>\n";
        }
        echo '</table></center></td></tr>';
    } else {
        echo '<tr><td colspan="2" align="center">'.
             sprintf(_("Plugin directory could not be found: %s"), $plugpath).
             "</td></tr>\n";
    }
}
echo '<tr bgcolor="'.$color[5].'"><th colspan="2"><input value="'.
     _("Change Settings").'" type="submit" /><br />'.
     '<a href="'.SM_PATH.'src/configtest.php" target="_blank">'.
     _("Test Configuration")."</a></th></tr>\n".
     '</table></td></tr></table></center></form>';

/*
    Write the options to the file.
*/

if ( $fp = @fopen( $cfgfile, 'w' ) ) {
    fwrite( $fp, "<?php\n".
    "/**\n".
    " * SquirrelMail Configuration File\n".
    " * Created using the Administrator Plugin\n".
    " */\n".
    "\n".
    "global \$version;\n" );

    foreach ( $newcfg as $k => $v ) {
        if ( $k{0} == '$' && $v <> '' || is_int($v)) {
            if ( substr( $k, 1, 11 ) == 'ldap_server' ) {
                $v = substr( $v, 0, strlen( $v ) - 1 ) . "\n)";
                $v = str_replace( 'array(', "array(\n\t", $v );
                $v = str_replace( "',", "',\n\t", $v );
            }
            /* FIXME: add elseif that reverts plugins[#] to plugins[] */
            fwrite( $fp, "$k = $v;\n" );
        }
    }
    // add local config support
    fwrite( $fp, "@include SM_PATH . 'config/config_local.php';\n" );
    // close php
    fwrite( $fp, '?>' );
    fclose( $fp );
} else {
    echo '<br /><p align="center"><big>'.
         _("Config file can't be opened. Please check config.php.").
         '</big></p>';
}
?>
</body></html>