[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=199710#comment-199710 ] 

Walter Doekes commented on ASTERISK-20167:
------------------------------------------

Wrong (unfortunately). Base64'ing it does not help with the problem at hand.

If it did, I'd go with that solution, but it doesn't. See the following, keeping in mind that asterisk is encoding-agnostic here:

{noformat}"AB€" == "AB\xe2\x82\xac"{noformat}

If I attempt to make base64, I get this:

{noformat}"QULigqw="{noformat}

However, if I only have room for four bytes left. We get this:

{noformat}"QULi" + "gqw="{noformat}

Which translates to:

{noformat}"AB\xe2" + "\x82\xac"{noformat}

Same problem as before..
                
> 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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