[asterisk-bugs] [JIRA] (ASTERISK-20167) UTF-8 cyrillic characters in voicemail email subject cause subject corruption

[Walter Doekes (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-20167?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=199715#comment-199715 ] 

Walter Doekes edited comment on ASTERISK-20167 at 11/14/12 8:25 AM:
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I think the only thing you did was point out that I'm right:

{quote}Each 'encoded-word' MUST represent an integral number of characters.{quote}

.. whether that's base64 or Q-encoded.

I didn't write that we MUST break up the base64 at four bytes. It'd be perfectly legal to break it up into:
{noformat}"QUI=" (AB) + "4oKs" (€){noformat}

But that requires Asterisk to know about the encoding.. *which* *it* (again) *doesn't* *right* *now*. Asterisk sees 5 bytes, not 3 characters. So it won't split things up like you want it to.


                
      was (Author: wdoekes):
    I think the only thing you did was point out that I'm right:

{quote}Each 'encoded-word' MUST represent an integral number of characters.{quote}

.. whether that's base64 or utf8.

I didn't write that we MUST break up the base64 at four bytes. It'd be perfectly legal to break it up into:
{noformat}"QUI=" (AB) + "4oKs" (€){noformat}

But that requires Asterisk to know about the encoding.. *which* *it* (again) *doesn't* *right* *now*. Asterisk sees 5 bytes, not 3 characters. So it won't split things up like you want it to.


                  
> UTF-8 cyrillic characters in voicemail email subject cause subject corruption
> -----------------------------------------------------------------------------
>
>                 Key: ASTERISK-20167
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-20167
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Applications/app_voicemail
>    Affects Versions: 1.8.8.2
>         Environment: Linux myhost.mydomain 2.6.18-308.11.1.el5 #1 SMP Tue Jul 10 08:49:28 EDT 2012 i686 i686 i386 GNU/Linux
> Cent-OS 5.8
>            Reporter: Arcadiy Ivanov
>         Attachments: issueA20167_break_early_for_q_encoding.patch
>
>
> This has been happening ever since 1.4.x.
> ========
> In voicemail.conf:
> emailsubject=[PBX]: Сообщение от ${VM_CALLERID} в ${VM_DATE}
> ========
> The emails arrive with the following subject:
> [PBX]: Сообще�в Monday, July 23, 2012 at 11:45:46 PM
> ========
> The subject should appear as follows:
> [PBX]: Сообщение от "anonymous" <anonymous> в Monday, July 23, 2012 at 11:45:46 PM
> ========
> The raw subject header as it appears in the email message is:
> Subject: =?UTF-8?Q?=5BPBX=5D=3A_=D0=A1=D0=BE=D0=BE=D0=B1=D1=89=D0=B5=D0?=
>  =?UTF-8?Q?=BD=D0=B8=D0=B5_=D0=BE=D1=82_=22anonymous=22_=3Canonymous=3E_?=
>  =?UTF-8?Q?=D0=B2_Monday=2C_July_23=2C_2012_at_11=3A45=3A46_PM?=

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