php-imap: Problem with subject =?UTF-8?Q? (2)

Describe the bug When I’m parsing the e-mail message, I’m facing this issue when trying to getSubject().

Used config I’m using default package config.

Code to Reproduce The troubling code section which produces the reported bug.

$client = Client::account('default');
$client->connect();
$inbox = $client->getFolderByPath('INBOX');
$query = $inbox->messages();
$messages = $query->where(['UNSEEN'])->from($email)->get();

foreach ($messages as $message) {    
     echo $message->getSubject();
}

Expected behavior 99% of cases this script work, but to an specific message it’s returing the subject as:

=?utf-8?Q?Confirmaci=C3=B3n_reserva_Free_Tour_Flo?= =?utf-8?Q?rencia_Esencial_-_Buendiatours.com?=

Desktop / Server (please complete the following information):

OS: Windows 11 Enterprise
PHP: XAMPP / PHP 8.2.7
Version v5.3
Provider Hetzner Online GmbH

About this issue

Original URL
State: open
Created a year ago
Reactions: 1
Comments: 17 (5 by maintainers)

Commits related to this issue

Test for issue #420 added — committed to Webklex/php-imap by Webklex 3 months ago

Most upvoted comments

Wonderful, works perfectly, thank you very much. We’ll hope the imap-php library fixes this in the future.

daniel89fg on Sep 21, 2023

this paulocardozo decodeSubject function id doing pretty good job with my test set of subjects, but cannot decode this one:

=?UTF-8?B?VGlja2V0IE5vOiBb7aC97bOpMTddIE1haWxib3ggSW5ib3ggLSAoMTcpIEluY29taW5nIGZhaWxlZCBtZXNzYWdlcw==?=

We’ve just checked this subject with the latest version of decodeSubject() function, it was decoded into:

Ticket No: [??????17] Mailbox Inbox - (17) Incoming failed messages

freescout-helpdesk on Nov 15, 2023

I have created a function to parse subject:

`private static function decodeSubject($subject) {

    $parts = preg_match_all("/(=\?[^\?]+\?[BQ]\?)([^\?]+)(\?=)[\r\n\t ]*/i", $subject, $m);

    $joined_parts = '';
    if (count($m[1]) > 1 && !empty($m[2])) {
        // Example: GyRCQGlNVTtZRTkhIT4uTlMbKEI=
        $joined_parts = $m[1][0] . implode('', $m[2]) . $m[3][0];

        $subject_decoded = iconv_mime_decode($joined_parts, ICONV_MIME_DECODE_CONTINUE_ON_ERROR, "UTF-8");

        if ($subject_decoded && trim($subject_decoded) != trim(rtrim($joined_parts, '='))) {
            return $subject_decoded;
        }
    }

    // iconv_mime_decode() can't decode:
    // =?iso-2022-jp?B?IBskQiFaSEcyPDpuQC4wTU1qIVs3Mkp2JSIlLyU3JSItahsoQg==?=
    $subject_decoded = iconv_mime_decode($subject, ICONV_MIME_DECODE_CONTINUE_ON_ERROR, "UTF-8");

    // Sometimes iconv_mime_decode() can't decode some parts of the subject:
    // =?iso-2022-jp?B?IBskQiFaSEcyPDpuQC4wTU1qIVs3Mkp2JSIlLyU3JSItahsoQg==?=
    // =?iso-2022-jp?B?GyRCQGlNVTtZRTkhIT4uTlMbKEI=?=
    if (preg_match_all("/=\?[^\?]+\?[BQ]\?/i", $subject_decoded)) {
        $subject_decoded = \imap_utf8($subject);
    }

    if (!$subject_decoded) {
        $subject_decoded = $subject;
    }

    return $subject_decoded;
}`

Then I do that.

paulocardozo on Sep 21, 2023

@Webklex Well, as I’m very delayed in a project, I’ve tested the solution above, it’s related to https://github.com/Webklex/php-imap/issues/410#issuecomment-1608876508 and it worked.

`private static function decodeSubject($subject) { $parts = preg_match_all(“/(=?[^?]+?[BQ]?)([^?]+)(?=)[\r\n\t ]*/i”, $subject, $m);

    $joined_parts = '';
    if (count($m[1]) > 1 && !empty($m[2])) {
        // Example: GyRCQGlNVTtZRTkhIT4uTlMbKEI=
        $joined_parts = $m[1][0].implode('', $m[2]).$m[3][0];

        $subject_decoded = iconv_mime_decode($joined_parts, ICONV_MIME_DECODE_CONTINUE_ON_ERROR, "UTF-8");

        if ($subject_decoded && trim($subject_decoded) != trim(rtrim($joined_parts, '='))) {
            return $subject_decoded;
        }
    }

    // iconv_mime_decode() can't decode:
    // =?iso-2022-jp?B?IBskQiFaSEcyPDpuQC4wTU1qIVs3Mkp2JSIlLyU3JSItahsoQg==?=
    $subject_decoded = iconv_mime_decode($subject, ICONV_MIME_DECODE_CONTINUE_ON_ERROR, "UTF-8");

    // Sometimes iconv_mime_decode() can't decode some parts of the subject:
    // =?iso-2022-jp?B?IBskQiFaSEcyPDpuQC4wTU1qIVs3Mkp2JSIlLyU3JSItahsoQg==?=
    // =?iso-2022-jp?B?GyRCQGlNVTtZRTkhIT4uTlMbKEI=?=
    if (preg_match_all("/=\?[^\?]+\?[BQ]\?/i", $subject_decoded)) {
        $subject_decoded = \imap_utf8($subject);
    }

    if (!$subject_decoded) {
        $subject_decoded = $subject;
    }

    return $subject_decoded;

}`

paulocardozo on Jun 28, 2023

@Webklex I just noticed, the same code works on unix server (Hostinger), but isn’t working locally on Windows. It’s seems very strange to me, but still investigating…

paulocardozo on Jun 27, 2023

@Webklex It seems be a local problem… I’m creating from scratch an application that verify constantly a mailbox, in the older version of application, your packege is working as well, but on newer not… I’ll further investigate here and post as soon as I have news.

Thanks!

paulocardozo on Jun 27, 2023