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Fix inbound mail handling for messages with no HTML body part

Summary:
See D18776. See <https://discourse.phabricator-community.org/t/cant-create-maniphest-tasks-by-email/754/2>.

The change in D18776 to improve handling of non-utf8 HTML parts broke handling of mail with //no// HTML parts. Partly, this is because MimeMailParser has a "traditional" PHP-style API where the return type is an exciting surprise.

Test Plan:
  - Sent a text-only message in `Mail.app`.
  - Used "Show Raw" to copy it to `mail.txt`, verifying that the raw message contains ONLY a text body.
  - Ran `cat mail.txt | ./scripts/mail/mail_handler.php --trace --process-duplicates`.
    - Before patch: error about bad `idx()` on a non-array.
    - After patch: clean mail processing.
  - Did the same with a message with both HTML and text bodies to make sure I didn't break anything.

Ideally we'd probably get test coverage on this, but it's been touched roughly once a year since 2013 so it'll probably hold.

Reviewers: amckinley, alexmv

Reviewed By: amckinley, alexmv

Differential Revision: https://secure.phabricator.com/D18778
This commit is contained in:
epriestley 2017-11-22 07:35:22 -08:00
parent d321cc810a
commit 1cb0d41367

View file

@ -38,15 +38,19 @@ $parser->setText(file_get_contents('php://stdin'));
$content = array();
foreach (array('text', 'html') as $part) {
$part_body = $parser->getMessageBody($part);
$part_headers = $parser->getMessageBodyHeaders($part);
$content_type = idx($part_headers, 'content-type');
if (
!phutil_is_utf8($part_body) &&
(preg_match('/charset="(.*?)"/', $content_type, $matches) ||
preg_match('/charset=(\S+)/', $content_type, $matches))
) {
$part_body = phutil_utf8_convert($part_body, 'UTF-8', $matches[1]);
if (strlen($part_body) && !phutil_is_utf8($part_body)) {
$part_headers = $parser->getMessageBodyHeaders($part);
if (!is_array($part_headers)) {
$part_headers = array();
}
$content_type = idx($part_headers, 'content-type');
if (preg_match('/charset="(.*?)"/', $content_type, $matches) ||
preg_match('/charset=(\S+)/', $content_type, $matches)) {
$part_body = phutil_utf8_convert($part_body, 'UTF-8', $matches[1]);
}
}
$content[$part] = $part_body;
}