Problem with MIME module

But in the Pike code of MIME.pmod we have:

if (headers["content-transfer-encoding"]) {
  array(string) arr=tokenize(headers["content-transfer-encoding"]);

[...]

And MIME.tokenize for a valid value such as Content-Transfer-Encoding: 8bit returns:

Result: ({ /* 3 elements */ "Content-Transfer-Encoding", 58, "8bit" })

It looks like you've a bit confused; the header

Content-Transfer-Encoding: Content-Transfer-Encoding: 8bit

is not a valid content-transfer-encoding header.

Can I change it this way ?

No, not unless you provide an example where the current code actually is broken.

PS: It seems to break especially with some Lotus Notes servers.

Please provide an example.

/ Henrik Grubbström (Lysator)

Previous text:

2003-11-10 17:17: Subject: Problem with MIME module

---

Hello,

I am using the MIME module of Pike 7.2 and I think it is broken when the mail contains the Content-Transfer-Encoding header.

Indeed the RFC says the header is of type:

 encoding := "Content-Transfer-Encoding" ":" mechanism

 mechanism := "7bit" / "8bit" / "binary" /
              "quoted-printable" / "base64" /
              ietf-token / x-token

But in the Pike code of MIME.pmod we have:

if (headers["content-transfer-encoding"]) {
  array(string) arr=tokenize(headers["content-transfer-encoding"]);
  if (sizeof(arr)!=1 || !stringp(arr[0]))
    throw (({ "invalid Content-Transfer-Encoding in message\n",
              backtrace() }));
  transfer_encoding = lower_case(arr[0]);
}

And MIME.tokenize for a valid value such as Content-Transfer-Encoding: 8bit returns:

Result: ({ /* 3 elements */ "Content-Transfer-Encoding", 58, "8bit" })

So in the Pike code the size of arr is neither 1 unless no encoding is specified (sizeof(arr)!=1 in the code). I think the offending code must be replaced by:

if(!stringp(arr[2])) throw... string transfer_encoding = lower_case(arr[2] || ""); multiset possible_values = (< "7bit", "8bit", "binary", "quoted-printable", "base64" >); if(!possible_values[transfer_encoding]) throw...

Can I change it this way ?

PS: It seems to break especially with some Lotus Notes servers.

/ David Gourdelier

/ Brevbäraren