[New-bugs-announce] [issue14062] UTF-8 Email Subject problem
Michal Sladek
report at bugs.python.org
Mon Feb 20 09:03:29 CET 2012
New submission from Michal Sladek <michal at sladkovi.eu>:
Hello!
I think there is a problem when adding UTF-8 subject to email message. I wrote following function (its code is based on examples I found in offical docs) which should send an email with UTF-8 subject, UTF-8 plain text body and attached file when all arguments are given.
fromAddr - address of sender
toAddr - address of recipient
subject - subject
body - text of email body
attachment - full path to file we want to attach
Here is the code:
def sendMail (fromAddr, toAddr, subject, body = '', attachment = ''):
message = email.mime.multipart.MIMEMultipart()
message.add_header('From',fromAddr)
message.add_header('To',toAddr)
message['Subject'] = email.header.Header(subject,'utf-8')
if (body != ''):
msgPart = email.mime.text.MIMEText(body,'plain','utf-8')
message.attach(msgPart)
if (attachment != ''):
if os.path.exists(attachment) == True:
filename = attachment.rpartition(os.sep)[2]
fp = open(attachment,'rb')
msgPart = email.mime.base.MIMEBase('application','octet-stream')
msgPart.set_payload(fp.read())
fp.close()
email.encoders.encode_base64(msgPart)
msgPart.add_header('Content-Disposition','attachment',filename=filename)
message.attach(msgPart)
if smtpPort == 25:
smtpCon = smtplib.SMTP(smtpSrv,smtpPort)
else:
smtpCon = smtplib.SMTP_SSL(smtpSrv,smtpPort)
if (smtpUser != '') and (smtpPass != ''):
smtpCon.login(smtpUser,smtpPass)
smtpCon.send_message(message,mail_options=['UTF8SMTP','8BITMIME'])
smtpCon.quit()
Running the function with following arguments:
sendMail('rzrobot at seznam.cz','msladek at volny.cz','žluťoučký kůň','úpěl ďábelské ódy')
produces following output on receiving side:
Return-Path: <rzrobot at seznam.cz>
Received: from smtp2.seznam.cz (smtp2.seznam.cz [77.75.76.43])
by mx1.volny.cz (Postfix) with ESMTP id DD6BB2E09CD
for <msladek at volny.cz>; Mon, 20 Feb 2012 08:34:38 +0100 (CET)
DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=seznam.cz;
h=Received:Content-Type:MIME-Version:From:To:Subject:--===============1029508565==:MIME-Version:Content-Transfer-Encoding:X-Smtpd:X-Seznam-User:X-Session:X-Country:X-Virus-Info:X-Seznam-SPF:X-Seznam-DomainKeys;
b=cdU1VSRTCDf0x2CeBNbLJxYSOhSy7r9lNp+1s7+bed6AGBI48vufe3q7f8JFxlfTc
ulZIDptWi6PMvlZYCBkh1uzTKcihZR7MCoxgW0PJLO1LX5elTJsZ/GTc5oe/GZXkTPT
qwj1EQIlVn0dpZtt4jIzfC2RrO2IRieR2rozeQM=
Received: from dvr.ph.sladkovi.eu (ip-84-42-150-218.net.upcbroadband.cz [84.42.150.218]) by email-relay2.ng.seznam.cz (Seznam SMTPD 1.2.15-6 at 18976) with ESMTP; Mon, 20 Feb 2012 08:34:35 +0100 (CET)
Content-Type: multipart/mixed; boundary="===============1029508565=="
MIME-Version: 1.0
From: rzrobot at seznam.cz
To: msladek at volny.cz
Subject: =?utf-8?b?xb5sdcWlb3XEjWvDvSBrxa/FiA==?=
X-DKIM-Status: fail
X-Virus: no (m2.volny.internal - Mon, 20 Feb 2012 08:34:40 +0100 (CET))
X-Spam: no (m2.volny.internal - Mon, 20 Feb 2012 08:34:41 +0100 (CET))
X-Received-Date: Mon, 20 Feb 2012 08:34:42 +0100 (CET)
--===============1029508565==:Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: base64
X-Smtpd: 1.2.15-6 at 18976
X-Seznam-User: rzrobot at seznam.cz
X-Session: 11
X-Country: CZ
X-Virus-Info:clean
X-Seznam-SPF:neutral
X-Seznam-DomainKeys:unknown
w7pwxJtsIMSPw6FiZWxza8OpIMOzZHk=
--===============1029508565==--
Although no attachment argument was given, the client says that message has an attachment of unknown type and that message does not contain any text at all. See that message part header :Content-Type: text/plain; charset="utf-8" is part of the message part boundary instead of beeing inside of the message part.
When I change the code of function to generate the subject manually and add it via add_header like this:
def sendMail (fromAddr, toAddr, subject, body = '', attachment = ''):
message = email.mime.multipart.MIMEMultipart()
message.add_header('From',fromAddr)
message.add_header('To',toAddr)
base64Subject = base64.b64encode(subject.encode('utf-8')).decode()
encodedSubject = '=?UTF-8?B?{0}?='.format(base64Subject)
message.add_header('Subject',encodedSubject)
if (body != ''):
msgPart = email.mime.text.MIMEText(body,'plain','utf-8')
message.attach(msgPart)
if (attachment != ''):
if os.path.exists(attachment) == True:
filename = attachment.rpartition(os.sep)[2]
fp = open(attachment,'rb')
msgPart = email.mime.base.MIMEBase('application','octet-stream')
msgPart.set_payload(fp.read())
fp.close()
email.encoders.encode_base64(msgPart)
msgPart.add_header('Content-Disposition','attachment',filename=filename)
message.attach(msgPart)
if smtpPort == 25:
smtpCon = smtplib.SMTP(smtpSrv,smtpPort)
else:
smtpCon = smtplib.SMTP_SSL(smtpSrv,smtpPort)
if (smtpUser != '') and (smtpPass != ''):
smtpCon.login(smtpUser,smtpPass)
smtpCon.send_message(message,mail_options=['UTF8SMTP','8BITMIME'])
smtpCon.quit()
Then everything is OK on receiving side, both subject and plaint text body are visible:
Return-Path: <rzrobot at seznam.cz>
Received: from smtp2.seznam.cz (smtp2.seznam.cz [77.75.76.43])
by mx1.volny.cz (Postfix) with ESMTP id 177092E0825
for <msladek at volny.cz>; Mon, 20 Feb 2012 08:51:58 +0100 (CET)
DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=seznam.cz;
h=Received:Content-Type:MIME-Version:From:To:Subject:X-Smtpd:X-Seznam-User:X-Session:X-Country:X-Virus-Info:X-Seznam-SPF:X-Seznam-DomainKeys;
b=F2A6GhX0TWVjnrB4vx/ayc1BTGDFxBI96oI0fk/gr/tgP0jlV1UC91m4i/O4ay+Bg
lfka88qa71XZOlHtY2vl7zxYjGPJ97pRCdtqWB+JcNOa5bMsk6lmjMHh+A+FQ2e7+yb
1F091t0nMcQlarriF8sD5rNjhuRYjvCv7kKbt8s=
Received: from dvr.ph.sladkovi.eu (ip-84-42-150-218.net.upcbroadband.cz [84.42.150.218]) by email-relay1.ng.seznam.cz (Seznam SMTPD 1.2.15-6 at 18976) with ESMTP; Mon, 20 Feb 2012 08:51:55 +0100 (CET)
Content-Type: multipart/mixed; boundary="===============1044203895=="
MIME-Version: 1.0
From: rzrobot at seznam.cz
To: msladek at volny.cz
Subject: =?UTF-8?B?xb5sdcWlb3XEjWvDvSBrxa/FiA==?=
X-Smtpd: 1.2.15-6 at 18976
X-Seznam-User: rzrobot at seznam.cz
X-Session: 11
X-Country: CZ
X-Virus-Info: clean
X-Seznam-SPF: neutral
X-Seznam-DomainKeys: unknown
X-DKIM-Status: pass seznam.cz
X-Virus: no (m2.volny.internal - Mon, 20 Feb 2012 08:52:00 +0100 (CET))
X-Spam: no (m2.volny.internal - Mon, 20 Feb 2012 08:52:01 +0100 (CET))
X-Received-Date: Mon, 20 Feb 2012 08:52:01 +0100 (CET)
--===============1044203895==
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: base64
w7pwxJtsIMSPw6FiZWxza8OpIMOzZHk=
--===============1044203895==--
I am not a programmer so I might overlook some obvious mistake in my code but for now I think it's a bug.
----------
components: None
messages: 153766
nosy: msladek
priority: normal
severity: normal
status: open
title: UTF-8 Email Subject problem
versions: Python 3.2
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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue14062>
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