UnexpectedEncodingException: Cannot decode "5"

[wujku]

From: Testowy Wujka <testowywujka@gmail.com>
Content-Type: multipart/mixed;
    boundary="Apple-Mail=_BC51FF68-314D-4AC3-BAF7-0432A230E7F6"
Mime-Version: 1.0 (Mac OS X Mail 11.2 \(3445.5.20\))
Subject: Inline Attachment
Message-Id: <40712F7B-4A03-4800-AD6E-97BBF53DAA39@gmail.com>
Date: Mon, 15 Jan 2018 08:58:30 +0100
To: Sample <sample@example.com>


--Apple-Mail=_BC51FF68-314D-4AC3-BAF7-0432A230E7F6
Content-Transfer-Encoding: 7bit
Content-Type: text/plain;
    charset=us-ascii

Lorem ipsum


--Apple-Mail=_BC51FF68-314D-4AC3-BAF7-0432A230E7F6
Content-Disposition: attachment;
    filename=attachment.txt
Content-Type: text/plain;
    x-unix-mode=0644;
    name="attachment.txt"
Content-Transfer-Encoding: 7bit

Hello!

--Apple-Mail=_BC51FF68-314D-4AC3-BAF7-0432A230E7F6--

[Slamdunk]

I cannot reproduce the Exception: may you create a PR with a failing test please?

[wujku]

I tried reproduce the Exception with phpunit and above mail.
\imap_fetchstructure (Message:60) returns something different for imap server which contains problematic mail.

phpunit:

class stdClass#43 (11) {
  public $type =>
  int(1)
  public $encoding =>
  int(0)
  public $ifsubtype =>
  int(1)
  public $subtype =>
  string(5) "MIXED"
  public $ifdescription =>
  int(0)
  public $ifid =>
  int(0)
  public $ifdisposition =>
  int(0)
  public $ifdparameters =>
  int(0)
  public $ifparameters =>
  int(1)
  public $parameters =>
  array(1) {
    [0] =>
    class stdClass#44 (2) {
      public $attribute =>
      string(8) "BOUNDARY"
      public $value =>
      string(48) "Apple-Mail=_BC51FF68-314D-4AC3-BAF7-0432A230E7F6"
    }
  }
  public $parts =>
  array(2) {
    [0] =>
    class stdClass#45 (12) {
      public $type =>
      int(0)
      public $encoding =>
      int(0)
      public $ifsubtype =>
      int(1)
      public $subtype =>
      string(5) "PLAIN"
      public $ifdescription =>
      int(0)
      public $ifid =>
      int(0)
      public $lines =>
      int(2)
      public $bytes =>
      int(15)
      public $ifdisposition =>
      int(0)
      public $ifdparameters =>
      int(0)
      public $ifparameters =>
      int(1)
      public $parameters =>
      array(1) {
        ...
      }
    }
    [1] =>
    class stdClass#47 (14) {
      public $type =>
      int(0)
      public $encoding =>
      int(0)
      public $ifsubtype =>
      int(1)
      public $subtype =>
      string(5) "PLAIN"
      public $ifdescription =>
      int(0)
      public $ifid =>
      int(0)
      public $lines =>
      int(1)
      public $bytes =>
      int(8)
      public $ifdisposition =>
      int(1)
      public $disposition =>
      string(10) "ATTACHMENT"
      public $ifdparameters =>
      int(1)
      public $dparameters =>
      array(1) {
        ...
      }
      public $ifparameters =>
      int(1)
      public $parameters =>
      array(2) {
        ...
      }
    }
  }
}

direct connection to problematic imap account:

class stdClass#646 (11) {
  public $type =>
  int(1)
  public $encoding =>
  int(0)
  public $ifsubtype =>
  int(1)
  public $subtype =>
  string(5) "MIXED"
  public $ifdescription =>
  int(0)
  public $ifid =>
  int(0)
  public $ifdisposition =>
  int(0)
  public $ifdparameters =>
  int(0)
  public $ifparameters =>
  int(0)
  public $parameters =>
  class stdClass#647 (0) {
  }
  public $parts =>
  array(3) {
    [0] =>
    class stdClass#648 (11) {
      public $type =>
      int(0)
      public $encoding =>
      int(0)
      public $ifsubtype =>
      int(1)
      public $subtype =>
      string(5) "PLAIN"
      public $ifdescription =>
      int(0)
      public $ifid =>
      int(0)
      public $bytes =>
      int(15)
      public $ifdisposition =>
      int(0)
      public $ifdparameters =>
      int(0)
      public $ifparameters =>
      int(1)
      public $parameters =>
      array(1) {
        ...
      }
    }
    [1] =>
    class stdClass#650 (11) {
      public $type =>
      int(0)
      public $encoding =>
      int(0)
      public $ifsubtype =>
      int(1)
      public $subtype =>
      string(5) "PLAIN"
      public $ifdescription =>
      int(0)
      public $ifid =>
      int(0)
      public $bytes =>
      int(8)
      public $ifdisposition =>
      int(0)
      public $ifdparameters =>
      int(0)
      public $ifparameters =>
      int(1)
      public $parameters =>
      array(2) {
        ...
      }
    }
    [2] =>
    class stdClass#653 (10) {
      public $type =>
      int(9)
      public $encoding =>
      int(5)
      public $ifsubtype =>
      int(1)
      public $subtype =>
      string(7) "UNKNOWN"
      public $ifdescription =>
      int(0)
      public $ifid =>
      int(0)
      public $ifdisposition =>
      int(0)
      public $ifdparameters =>
      int(0)
      public $ifparameters =>
      int(0)
      public $parameters =>
      class stdClass#654 (0) {
        ...
      }
    }
  }
}

[Slamdunk]

Ok, I get the issue. By itself, is not resolvable: without the encoding we can't provide the AbstractPart::getDecodedContent() functionality, and I prefer to prohibit it to avoid malfunctions.

But of course we can handle all this in a much more graceful way: I'll move the Exception to the getDecodedContent method, so you can fetch and use the message and also manually skip the part that can't be decoded if you don't want to decode them.

PR soon

[Slamdunk]

Released in 1.2.0