holm/django-helpdeskmig
1
0
Fork 0
mirror of https://gitea.mueller.network/extern/django-helpdesk.git synced 2024-12-26 08:39:08 +01:00
Code Issues Packages Projects Releases Wiki Activity

Fix utf decoding bug in email parsing code

Browse Source 
For some reason mozilla thunderbird sometimes marks email parts as 8bit
even though they are utf-8. I guess the best way to work around this is
to add a try-catch block because this really cannot be predicted.
This commit is contained in:
Timothy Hobbs 2020-01-23 15:30:08 +01:00
parent af2d0d59b7
commit 9963a3fe5d
3 changed files with 93 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
helpdesk/email.py
View File

@ -487,13 +487,18 @@ def object_from_message(message, queue, logger):
body.encode('utf-8')
logger.debug("Discovered plain text MIME part")
else:
try:
email_body = encoding.smart_text(part.get_payload(decode=True))
except UnicodeDecodeError:
email_body = encoding.smart_text(part.get_payload(decode=False))
payload = """
<html>
<head>
<meta charset="utf-8"/>
</head>
%s
</html>""" % encoding.smart_text(part.get_payload(decode=True))
</html>""" % email_body
files.append(
SimpleUploadedFile(_("email_html_body.html"), payload.encode("utf-8"), 'text/html')
)

72
helpdesk/tests/test_files/utf-nondecodable.eml Normal file
View File

@ -0,0 +1,72 @@
Delivered-To: helpdesk@example.cz
Received: by 2002:a17:90a:f983:0:0:0:0 with SMTP id cq3csp4021504pjb;
Tue, 21 Jan 2020 04:28:48 -0800 (PST)
X-Received: by 2002:a05:6000:50:: with SMTP id k16mr4730387wrx.145.1579609728626;
Tue, 21 Jan 2020 04:28:48 -0800 (PST)
X-Received: by 2002:a5d:50d2:: with SMTP id f18mr4914314wrt.366.1579609727642;
Tue, 21 Jan 2020 04:28:47 -0800 (PST)
Return-Path: <john.smith@example.cz>
Received: from [10.0.0.179] (ip-89-176-203-67.net.upcbroadband.cz. [89.176.203.67])
by smtp.gmail.com with ESMTPSA id w83sm3724796wmb.42.2020.01.21.04.28.46
for <helpdesk@example.cz>
(version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);
Tue, 21 Jan 2020 04:28:47 -0800 (PST)
Subject: =?UTF-8?Q?Fwd=3a_Cyklozam=c4=9bstnavatel_-_zm=c4=9bna_vyhodnocen?=
=?UTF-8?B?w60=?=
References: <CAK0Q_=uQY=3V5iUSgEN16GLtYoJ-6oQu-vYjsgQ=jv6DwOkuLQ@mail.gmail.com>
To: helpdesk@example.cz
From: John Smith <john.smith@example.cz>
Openpgp: preference=signencrypt
X-Forwarded-Message-Id: <CAK0Q_=uQY=3V5iUSgEN16GLtYoJ-6oQu-vYjsgQ=jv6DwOkuLQ@mail.gmail.com>
Message-ID: <00d73ce5-774a-5ea1-6742-af73ef58c01c@example.cz>
Date: Tue, 21 Jan 2020 13:28:46 +0100
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101
Thunderbird/60.9.0
MIME-Version: 1.0
In-Reply-To: <CAK0Q_=uQY=3V5iUSgEN16GLtYoJ-6oQu-vYjsgQ=jv6DwOkuLQ@mail.gmail.com>
Content-Type: multipart/alternative;
boundary="------------1E8B96489BB357387CBD04A6"
Content-Language: en-US
This is a multi-part message in MIME format.
--------------1E8B96489BB357387CBD04A6
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 8bit
-------- Forwarded Message --------
Subject: Cyklozaměstnavatel - změna vyhodnocení
Date: Thu, 9 Jan 2020 16:24:28 +0100
From: Nikola <nikola@example.cz>
To: John Smith <john.smith@example.cz>, Jiří Houdek
<jiri.houdek@example.cz>
Ahoj Johne,
podle domluvy bych Tě poprosila o změnu vyhodnocení soutěže
Cyklozaměstnavatel. 
Poprosím, aby se ve výsledné tabulce pro každé město zobrazoval
jednotlivý zaměstnavatel *jen jednou s průměrným výsledkem, *který vyjde
po zprůměrování hodnocení všech zaměstnanců tohoto zaměstnavatele. 
Díky moc!
n. 
--------------1E8B96489BB357387CBD04A6
Content-Type: text/html; charset=utf-8
Content-Transfer-Encoding: 8bit
<body>
<p>
prosazuje lepší
prostředí pro
kvalitní život
ve městě.
</p>
</body>
--------------1E8B96489BB357387CBD04A6--

15
helpdesk/tests/test_get_email.py
View File

@ -84,6 +84,21 @@ class GetEmailCommonTests(TestCase):
self.assertEqual(ticket.title, "Testovácí email")
self.assertEqual(ticket.description, "íářčšáíéřášč")
def test_email_with_utf_8_non_decodable_sequences(self):
"""
Tests that emails with utf-8 non-decodable sequences are parsed correctly
"""
with open(os.path.join(THIS_DIR, "test_files/utf-nondecodable.eml")) as fd:
test_email = fd.read()
ticket = helpdesk.email.object_from_message(test_email, self.queue_public, self.logger)
self.assertEqual(ticket.title, "Fwd: Cyklozaměstnavatel - změna vyhodnocení")
self.assertIn("prosazuje lepší", ticket.description)
followups = FollowUp.objects.filter(ticket=ticket)
followup = followups[0]
attachments = FollowUpAttachment.objects.filter(followup=followup)
attachment = attachments[0]
self.assertIn('prosazuje lepší', attachment.file.read().decode("utf-8"))
class GetEmailParametricTemplate(object):
"""TestCase that checks basic email functionality across methods and socks configs."""