squirrelmail/plugins/test/decodeheader.php

<?php

/**
 * SquirrelMail Test Plugin
 *
 * This page tests the decodeHeader function.
 *
 * @copyright 2006-2025 The SquirrelMail Project Team
 * @license http://opensource.org/licenses/gpl-license.php GNU Public License
 * @version $Id$
 * @package plugins
 * @subpackage test
 */

include_once('../../include/init.php');
include_once(SM_PATH . 'functions/mime.php');

global $oTemplate, $color;

displayPageHeader($color, '');


$header = array("< &  \xC3",                   // plain text
                '=?iso-8859-1?Q?=3C_&__=C3?=', // Q encoding
                '=?iso-8859-1?B?PCAmICDD?=',   // B encoding
                '=?utf-8?Q?=3C_&__=C3=80?=',   // Q encoding other charset
                '=?utf-8?B?PCAmICDDgA==?=',    // B encoding other charset
);


if (sqGetGlobalVar('lossy', $lossy, SQ_GET)) {
    if ($lossy) {
        $lossy_encoding = true;
    } else {
        if ($default_charset == 'utf-8') 
            $default_charset = 'iso-8859-1';
        $lossy_encoding = false;
    }
}


// NOTE: Not bothering to "templatize" the following output, since
//       this plugin is merely an administrative (and not user-facing)
//       tool.  If this is really important to you, please help by
//       submitting the work to the team.


echo "<strong>decodeHeader() Test:</strong>\n";


if ($default_charset == 'utf-8' || $lossy_encoding) {
    echo '<p><a href="decodeheader.php?lossy=0">Test with lossy_encoding OFF</a></p>';
} else {
    echo '<p><a href="decodeheader.php?lossy=1">Test with lossy_encoding ON</a></p>';
}


echo '<p>Default charset: ' . $default_charset . "<br />\n"
   . 'Lossy_encoding: ' . ($lossy_encoding ? 'true' : 'false') . '</p>';


echo '<p>The results of this test depend on your current language (translation) selection (see Options==>Display Preferences) (and the character set it employs) and your $lossy_encoding setting (see config/config.php or conf.pl ==> 10 ==> 5).</p>';


echo '<pre>';


echo "(MDN) 000:\n html chars are not encoded,\n space is not encoded,\n 8bit chars are unmodified\n";
foreach ($header as $test) {
    echo htmlentities(decodeHeader($test, false, false, false));
    echo "\n";
}
echo "--------\n";


echo "(compose) 001:\n html chars are not encoded,\n space is not encoded,\n 8bit chars may be converted or not (depends on \$lossy_encoding and \$default_charset)\n";
foreach ($header as $test) {
    echo htmlentities(decodeHeader($test, false, false, true));
    echo "\n";
}
echo "--------\n";


echo "010\n";
foreach ($header as $test) {
    echo htmlentities(decodeHeader($test, false, true, false));
    echo "\n";
}
echo "--------\n";


echo "011\n";
foreach ($header as $test) {
    echo htmlentities(decodeHeader($test, false, true, true));
    echo "\n";
}
echo "--------\n";


echo "(download) 100\n";
foreach ($header as $test) {
    echo htmlentities(decodeHeader($test, true, false, false));
    echo "\n";
}
echo "--------\n";


echo "101\n";
foreach ($header as $test) {
    echo htmlentities(decodeHeader($test, true, false, true));
    echo "\n";
}
echo "--------\n";


echo "(default) 110\n";
foreach ($header as $test) {
    echo htmlentities(decodeHeader($test, true, true, false));
    echo "\n";
}
echo "--------\n";


echo "111\n";
foreach ($header as $test) {
    echo htmlentities(decodeHeader($test, true, true, true));
    echo "\n";
}
echo "--------\n";


echo '</pre>';

$oTemplate->display('footer.tpl');