Solution and small question (was Re: [imp] Question about charset and Saved Mail)

[Jan Schneider]

Zitat von Santiago Romero <sromero at servicom2000.com>:

> En Mon, 13 Jan 2003 09:12:04 +0100 Santiago Romero
> <sromero at servicom2000.com> escribio:
> 
>   Well, I finally managed to solve my problem.
> 
> Problem: Displaying of Quoted Printable messages in INBOX,
> Trash and Sent-Mail is right (with message.php3 source code),
> but in the Drafts folder (with compose.php3), charsets are not
> translated correctly (i.e. camión -> cami=3Dn).
> 
> Browsing mailbox.php3 I found a piece of source code that
> decoded QUOTED_PRINTABLE and ENCBASE64 bodies. I applied that
> code to the DRAFT section of compose.php3:
> 
> ---------------------------------------------------------------
> case DRAFT:
>      // ( some code snipped for readability )
>      if ($mailbox && $index && $bodypart)
>      {
>         $h = imap_header($imp->stream, imap_msgno($imp->stream, $index));
>         (...)
>         $msg = imap_fetchbody($imp->stream, $index, $bodypart, FT_UID);
>         $structure = @imap_fetchstructure($imp->stream, $index, FT_UID);
>         if (@count($structure->parts) > 1) attach_files($structure, '');
> 
>         $get_sig = false;
> 
>        // begin new code
>        // Translate charsets (from mailbox.php3 / Horde-IMP team)
>        // compose.php3 changed by sromero - 15-01-2003
>        if ($structure->encoding == ENCQUOTEDPRINTABLE) {
>            $qmsg = imap_qprint($msg);
>            if (!empty($qmsg)) $msg = $qmsg;
>        } elseif ($structure->encoding == ENCBASE64) {
>            $msg = imap_base64($msg);
>        }
>        // end new code
>     }
>     break;
> ---------------------------------------------------------------
> 
>  Now it seems to work correctly, but I have 2 doubts:
> 
> 
> 1.- I also need to decode UTF8, and I have apache with xml
> support, so I have the utf8_decode function available. How do I
> identify WHEN my message is utf8-encoded? I mean,
> 
>  elseif( $structure->encoding == WHAT_DO_I_PUT_HERE_FOR_UTF8 )
>    $msg = utf8_decode($msg);
> 
>  How do I detect if my message is UTF8 encoded?

The encoding in this part of the code is the Transfer-Encoding that defines
how the message is encoded to only contain 7bit characters.

UTF-8 refers to the messages Content-Encoding that defines the charset the
message is written in. These two have nothing to do with each other.

> 2.- Do you think the above source code is well applied, or it
> could damage attachs or something like that? I hope $msg is just
> the body message, not the message itself. If it's the body message
> I think the code is right, if it's the msg + attachments, I'm
> afraid the qprint() or base64() functions could modify the attachs
> or something they shouldn't touch.
> 
>  The variable $msg is defined as:
> 
>  $msg = imap_fetchbody($imp->stream, $index, $bodypart, FT_UID);
> 
>  The third parameter is:
> 
>  And bodypart is 1 in this part of the code... is that fetching just
> the body, so it's right, isn't it?

Not sure about this one.

Jan.

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