[Evolution] Bug#447233: evolution-data-server: mime words in email header not decoded

[Darren]

Package: evolution-data-server
Version: 1.12.0-1
Severity: important
Tags: patch

Chinese M$ outlook  users tend to use gb2312 when they send emails.but
they mixed simplified chinese characters and traditional chinese and  
also other characters beyond the scope of gb2312 in  mail's header and
body which are in fact GBK.below is a sample mail header,it can import into
evolution:

-----sample mail header start-----------
Received: by test.com  id
        <01C8122C.6D3AA0B1 at test.com>; Fri, 19 Oct 2007 16:45:40 +0800
MIME-Version: 1.0
Content-Type: text/html; charset="gb2312"
Content-Transfer-Encoding: quoted-printable
Content-class: urn:content-classes:message
X-MimeOLE: Produced By Microsoft Exchange V6.5
Subject: =?gb2312?B?xOOCgw==?=
Date: Fri, 19 Oct 2007 16:45:40 +0800
Message-ID: <3EF0A61969CFD748AF2B60BFACDCC521020213AE at test.com>
X-MS-Has-Attach: 
X-MS-TNEF-Correlator: 
Thread-Topic: =?gb2312?B?xOOCgw==?=
Thread-Index: AcgSLG04DrAwBPZbQJaz7adEcPTd/g==
From: =?gb2312?B?SHUsIERhcnJlbiAouvrS449WIElFUyk=?= <Darren at test.com>
To: =?gb2312?B?SHUsIERhcnJlbiAouvrS449WIElFUyk=?= <Darren at test.com>
-----sample mail header end-----------

evolution fails to decode the mime headers because the characters are beyond
the scope of charset gb2312.it just shows the orignial header like =?gb2312?B?xOOCgw==?=
which is somewhat annoying.And characters beyond gb2312 charset in the
mail body  also not shows correctly.the alike problem also occurs in
firefox 1.x and latest epiphany-broswer(which has a workaround),but
solved in firefox 2.x.

since gb18030 is a superset of gbk and gb2312,always to decode mail
using gb18030 is more error-tolerable and user-friendly.

here is a patch I made to file 
evolution-data-server-1.12.0/libedataserver/e-iconv.c
I have succesfully builded it using dpkg-build

--cut here--
138c138
<         { "zh_CN.euc",      "gb18030"     },
---
>       { "zh_CN.euc",      "gb2312"     },
140c140
<         { "euc-cn",         "gb18030"     },
---
>       { "euc-cn",         "gb2312"     },
144,147c144,146
<         { "gb2312-0",       "gb18030"     },
<         { "gb2312.1980-0",  "gb18030"     },
<         { "gb-2312",        "gb18030"     },
<         { "gb2312",         "gb18030"     },
---
>       { "gb2312-0",       "gb2312"     },
>       { "gb2312.1980-0",  "gb2312"     },
>       { "gb-2312",        "gb2312"     },
597d595
<         { "gb18030",     "zh" },
598a597
>       { "gb18030",     "zh" },
--cut here--

-- System Information:
Debian Release: lenny/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (1, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 2.6.22-2-686-bigmem (SMP w/2 CPU cores)
Locale: LANG=zh_CN.UTF-8, LC_CTYPE=zh_CN.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages evolution-data-server depends on:
ii  evolution-data-server 1.12.0-1           architecture independent files for
ii  libbonobo2-0          2.20.0-1           Bonobo CORBA interfaces library
ii  libc6                 2.6.1-5            GNU C Library: Shared libraries
ii  libcamel1.2-10        1.12.0-1           The Evolution MIME message handlin
ii  libcomerr2            1.40.2-1           common error description library
ii  libdb4.4              4.4.20-11          Berkeley v4.4 Database Libraries [
ii  libebook1.2-9         1.12.0-1           Client library for evolution addre
ii  libecal1.2-7          1.12.0-1           Client library for evolution calen
ii  libedata-book1.2-2    1.12.0-1           Backend library for evolution addr
ii  libedata-cal1.2-6     1.12.0-1           Backend library for evolution cale
ii  libedataserver1.2-9   1.12.0-1           Utility library for evolution data
ii  libegroupwise1.2-13   1.12.0-1           Client library for accessing group
ii  libgconf2-4           2.20.0-1           GNOME configuration database syste
ii  libglib2.0-0          2.14.2-1           The GLib library of C routines
ii  libgnome2-0           2.20.0-1           The GNOME 2 library - runtime file
ii  libgnomevfs2-0        1:2.20.0-3         GNOME Virtual File System (runtime
ii  libgnutls13           2.0.1-1            the GNU TLS library - runtime libr
ii  libkrb53              1.6.dfsg.3~beta1-1 MIT Kerberos runtime libraries
ii  libldap2              2.1.30.dfsg-13.5   OpenLDAP libraries
ii  libnspr4-0d           4.6.7-1            NetScape Portable Runtime Library
ii  libnss3-0d            3.11.7-1           Network Security Service libraries
ii  liborbit2             1:2.14.7-0.1       libraries for ORBit2 - a CORBA ORB
ii  libpopt0              1.10-3             lib for parsing cmdline parameters
ii  libsoup2.2-8          2.2.101-1          an HTTP library implementation in 
ii  libxml2               2.6.30.dfsg-2      GNOME XML library
ii  zlib1g                1:1.2.3.3.dfsg-6   compression library - runtime

evolution-data-server recommends no packages.

-- no debconf information
-------------- next part --------------
138c138
<         { "zh_CN.euc",      "gb18030"     },
---
> 	{ "zh_CN.euc",      "gb2312"     },
140c140
<         { "euc-cn",         "gb18030"     },
---
> 	{ "euc-cn",         "gb2312"     },
144,147c144,146
<         { "gb2312-0",       "gb18030"     },
<         { "gb2312.1980-0",  "gb18030"     },
<         { "gb-2312",        "gb18030"     },
<         { "gb2312",         "gb18030"     },
---
> 	{ "gb2312-0",       "gb2312"     },
> 	{ "gb2312.1980-0",  "gb2312"     },
> 	{ "gb-2312",        "gb2312"     },
597d595
<         { "gb18030",     "zh" },
598a597
> 	{ "gb18030",     "zh" },