base64-encoded post-by-email post garbled.

[kallewoof]

When posting-by-email, my cellphone submits code using "content-transfer-encoding: base64". The message appears (output from wp-mail.php) like so:

Author = [my email] <p><p><b>Content-type:</b> text/plain, <b>Content-Transfer-Encoding:</b> base64, <b>boundary:</b> </p>
<p><b>Raw content:</b><br /><pre>SnVzdCB0ZXN0aW5nIHBvc3RpbmcgZnJvbSBteSBjZWxsLiBTdHJ1Y2sgbWUgd2hpbGUgcmVh
ZGluZyAgUmFwaCBLb3N0ZXIncyBwb3N0cyBhYm91dCB0aGUgZmlyZXMgaW4gQ2FsIHRoYXQg
YmVpbmcgYWJsZSB0byBwb3N0IHRvIHlvdXIgYmxvZyBmcm9tIGEgY2VsbHBob25lIGlzIGEg
dXNlZnVsIGZlYXR1cmUuIA==</pre></p>
<p><b>Author:</b> 1</p>
<p><b>Posted title:</b> =?utf-8?B?Q2VsbHBob25lIHBvc3RpbmcgaW4gV1A=?=<br />
<b>Posted content:</b><br /><pre>SnVzdCB0ZXN0aW5nIHBvc3RpbmcgZnJvbSBteSBjZWxsLiBTdHJ1Y2sgbWUgd2hpbGUgcmVh
ZGluZyAgUmFwaCBLb3N0ZXIncyBwb3N0cyBhYm91dCB0aGUgZmlyZXMgaW4gQ2FsIHRoYXQg
YmVpbmcgYWJsZSB0byBwb3N0IHRvIHlvdXIgYmxvZyBmcm9tIGEgY2VsbHBob25lIGlzIGEg
dXNlZnVsIGZlYXR1cmUuIA==</pre></p><p>Mission complete, message <strong>1</strong> deleted.</p>

The provided patch detects base64-encoded content transfers and base64_decodes them. For some reason (I'm no utf8-expert) the TITLE of the post has "=?utf-8?B?" prepended to the actual base64 content (see above), which means a check for this string + a cropping is needed or base64_decode will not decode the post title properly.

[kallewoof]

wp-mail.php patch for base64 encoding

[rene_e]

Hi, thanks for the patch. Had the same problem, was solved with the patch. But the title shouldn't be decoded, it's not encoded in base64 (cause it's no content). So by removing the second part of the patch, it works flawlessly with Moto-EZX email client.

[Denis-de-Bernardy]

See also #5204

[westi]

Moving all blog-by-email bugs to a seperate component and out of 2.9.

This will all be address by a new canonical blog-by-email plugin which is under development and will hopefully be available by the time 2.9 is released.

[chriscct7]

This feature is getting removed by #22942. Closing as wontfix