SIEVE: handling of lineending in fields

[Stephan Bosch]

Op 22-7-2017 om 18:02 schreef Ingo Thierack:
> Hello,
>
> migrated von the mailserver from centos to alpine linux. Most parts are
> run well.
>
> dovecot 2.2.31
> sieve: 0.4.19
>
> But i fight with on behavior.
>
> I have an sieve script which pipes a few fields to an external script
> which send this data to an telegram-bot.
>
> the part of the sieve-script.
>
> if header :matches "Subject" "*" {
>      set "subject" "${1}";
> }
> if header :matches "from" "*" {
>      set "from" "${1}";
> }
> if header :matches "to" "*" {
>      set "to" "${1}";
> }
>
> foreverypart
> {
>      if header :mime :type :is "Content-Type" "text"
>      {
>           extracttext :first 30 "msgcontent";
>           break;
>      }
> }
>
> pipe :copy :try "notify.sh" [ "", "(${from})#${to}#${subject}",
> "\"${msgcontent}\"" ];
>
> What i get now is an error about looks like encoding of the linefeeds.
>
> default: line 107: error: specified :args item `"test 4??"' is invalid.
>
> Here is sent a mail which contains in subject "test 4".
>
> or
> default: line 107: error: specified :args item `"?? ?? ??? ??? Oracle
> Magazine "' is invalid.
>
> Here is sent a mail which contains in subject "test 4".
>
> On centos this was never an problem. With alpine-linux this process is
> complete broken.
>
> Any hints, where to look and maybee fix thie behavior? Mybe its ab
> problem with the libmusl which used in alpine.

This is nothing new:

https://github.com/dovecot/pigeonhole/blob/master/doc/rfc/spec-bosch-sieve-extprograms.txt#L149
https://github.com/dovecot/pigeonhole/blob/master/src/plugins/sieve-extprograms/sieve-extprograms-common.c#L191 
(code is at least 4 years old)

I could add an option to allow newlines, but I am not sure that is a 
good idea per se.

Regards,

Stephan.