mercurial/mail.py
author Mads Kiilerich <mads@kiilerich.com>
Thu, 08 Dec 2011 16:28:18 +0100
changeset 15897 cc021114fc98
parent 15562 a82b6038ff08
child 17424 e7cfe3587ea4
permissions -rw-r--r--
hg-ssh: use shlex for shell-like parsing of SSH_ORIGINAL_COMMAND The Mercurial ssh protocol is defined as if it was ssh-ing to a shell account on an ordinary ssh server, and where hg was available in $PATH and it executed the command "hg -R REPOPATH serve --stdio". The Mercurial ssh client can in most cases just pass REPOPATH to the shell, but if it contains unsafe characters the client will have to quote it so the shell will pass the right -R value to hg. Correct quoting of repopaths was introduced in d8fa35c28335 and tweaked in 86fc364ca5f8. hg-ssh doesn't create the command via a shell and used a simple parser instead. It worked fine for simple paths without any quoting, but if any kind of quoting was used it failed to parse the command like the shell would do it. This makes hg-ssh behave more like a normal shell with hg in the path would do.
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# mail.py - mail sending bits for mercurial
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#
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# Copyright 2006 Matt Mackall <mpm@selenic.com>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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from i18n import _
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import util, encoding
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import os, smtplib, socket, quopri, time
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import email.Header, email.MIMEText, email.Utils
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_oldheaderinit = email.Header.Header.__init__
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def _unifiedheaderinit(self, *args, **kw):
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    """
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    Python2.7 introduces a backwards incompatible change
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    (Python issue1974, r70772) in email.Generator.Generator code:
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    pre-2.7 code passed "continuation_ws='\t'" to the Header
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    constructor, and 2.7 removed this parameter.
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    Default argument is continuation_ws=' ', which means that the
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    behaviour is different in <2.7 and 2.7
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    We consider the 2.7 behaviour to be preferable, but need
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    to have an unified behaviour for versions 2.4 to 2.7
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    """
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    # override continuation_ws
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    kw['continuation_ws'] = ' '
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    _oldheaderinit(self, *args, **kw)
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email.Header.Header.__dict__['__init__'] = _unifiedheaderinit
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def _smtp(ui):
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    '''build an smtp connection and return a function to send mail'''
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    local_hostname = ui.config('smtp', 'local_hostname')
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    tls = ui.config('smtp', 'tls', 'none')
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    # backward compatible: when tls = true, we use starttls.
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    starttls = tls == 'starttls' or util.parsebool(tls)
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    smtps = tls == 'smtps'
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    if (starttls or smtps) and not util.safehasattr(socket, 'ssl'):
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        raise util.Abort(_("can't use TLS: Python SSL support not installed"))
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    if smtps:
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        ui.note(_('(using smtps)\n'))
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        s = smtplib.SMTP_SSL(local_hostname=local_hostname)
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    else:
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        s = smtplib.SMTP(local_hostname=local_hostname)
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    mailhost = ui.config('smtp', 'host')
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    if not mailhost:
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        raise util.Abort(_('smtp.host not configured - cannot send mail'))
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    mailport = util.getport(ui.config('smtp', 'port', 25))
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    ui.note(_('sending mail: smtp host %s, port %s\n') %
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            (mailhost, mailport))
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    s.connect(host=mailhost, port=mailport)
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    if starttls:
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        ui.note(_('(using starttls)\n'))
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        s.ehlo()
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        s.starttls()
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        s.ehlo()
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    username = ui.config('smtp', 'username')
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    password = ui.config('smtp', 'password')
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    if username and not password:
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        password = ui.getpass()
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    if username and password:
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        ui.note(_('(authenticating to mail server as %s)\n') %
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                  (username))
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        try:
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            s.login(username, password)
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        except smtplib.SMTPException, inst:
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            raise util.Abort(inst)
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    def send(sender, recipients, msg):
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        try:
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            return s.sendmail(sender, recipients, msg)
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        except smtplib.SMTPRecipientsRefused, inst:
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            recipients = [r[1] for r in inst.recipients.values()]
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            raise util.Abort('\n' + '\n'.join(recipients))
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        except smtplib.SMTPException, inst:
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            raise util.Abort(inst)
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    return send
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def _sendmail(ui, sender, recipients, msg):
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    '''send mail using sendmail.'''
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    program = ui.config('email', 'method')
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    cmdline = '%s -f %s %s' % (program, util.email(sender),
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                               ' '.join(map(util.email, recipients)))
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    ui.note(_('sending mail: %s\n') % cmdline)
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    fp = util.popen(cmdline, 'w')
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    fp.write(msg)
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    ret = fp.close()
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    if ret:
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        raise util.Abort('%s %s' % (
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            os.path.basename(program.split(None, 1)[0]),
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            util.explainexit(ret)[0]))
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def _mbox(mbox, sender, recipients, msg):
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    '''write mails to mbox'''
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    fp = open(mbox, 'ab+')
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    # Should be time.asctime(), but Windows prints 2-characters day
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    # of month instead of one. Make them print the same thing.
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    date = time.strftime('%a %b %d %H:%M:%S %Y', time.localtime())
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    fp.write('From %s %s\n' % (sender, date))
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    fp.write(msg)
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    fp.write('\n\n')
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    fp.close()
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def connect(ui, mbox=None):
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    '''make a mail connection. return a function to send mail.
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    call as sendmail(sender, list-of-recipients, msg).'''
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    if mbox:
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        open(mbox, 'wb').close()
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        return lambda s, r, m: _mbox(mbox, s, r, m)
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    if ui.config('email', 'method', 'smtp') == 'smtp':
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        return _smtp(ui)
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    return lambda s, r, m: _sendmail(ui, s, r, m)
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parents:
diff changeset
   116
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diff changeset
   117
def sendmail(ui, sender, recipients, msg, mbox=None):
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   118
    send = connect(ui, mbox=mbox)
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diff changeset
   119
    return send(sender, recipients, msg)
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   120
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   121
def validateconfig(ui):
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   122
    '''determine if we have enough config data to try sending email.'''
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   123
    method = ui.config('email', 'method', 'smtp')
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diff changeset
   124
    if method == 'smtp':
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   125
        if not ui.config('smtp', 'host'):
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diff changeset
   126
            raise util.Abort(_('smtp specified as email transport, '
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diff changeset
   127
                               'but no smtp host configured'))
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diff changeset
   128
    else:
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diff changeset
   129
        if not util.findexe(method):
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   130
            raise util.Abort(_('%r specified as email transport, '
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diff changeset
   131
                               'but not in PATH') % method)
7114
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   132
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   133
def mimetextpatch(s, subtype='plain', display=False):
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   134
    '''Return MIME message suitable for a patch.
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   135
    Charset will be detected as utf-8 or (possibly fake) us-ascii.
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   136
    Transfer encodings will be used if necessary.'''
8332
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   137
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   138
    cs = 'us-ascii'
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   139
    if not display:
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   140
        try:
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   141
            s.decode('us-ascii')
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   142
        except UnicodeDecodeError:
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   143
            try:
8332
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   144
                s.decode('utf-8')
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   145
                cs = 'utf-8'
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   146
            except UnicodeDecodeError:
8332
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   147
                # We'll go with us-ascii as a fallback.
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   148
                pass
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diff changeset
   149
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   150
    return mimetextqp(s, subtype, cs)
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diff changeset
   151
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   152
def mimetextqp(body, subtype, charset):
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   153
    '''Return MIME message.
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diff changeset
   154
    Qouted-printable transfer encoding will be used if necessary.
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   155
    '''
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diff changeset
   156
    enc = None
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diff changeset
   157
    for line in body.splitlines():
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diff changeset
   158
        if len(line) > 950:
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diff changeset
   159
            body = quopri.encodestring(body)
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diff changeset
   160
            enc = "quoted-printable"
a82b6038ff08 mail: use quoted-printable for mime encoding to avoid too long lines (issue3075)
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diff changeset
   161
            break
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Mads Kiilerich <mads@kiilerich.com>
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diff changeset
   162
a82b6038ff08 mail: use quoted-printable for mime encoding to avoid too long lines (issue3075)
Mads Kiilerich <mads@kiilerich.com>
parents: 15561
diff changeset
   163
    msg = email.MIMEText.MIMEText(body, subtype, charset)
8332
3e544c074459 patchbomb: quoted-printable encode overly long lines
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parents: 8312
diff changeset
   164
    if enc:
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diff changeset
   165
        del msg['Content-Transfer-Encoding']
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diff changeset
   166
        msg['Content-Transfer-Encoding'] = enc
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diff changeset
   167
    return msg
7191
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diff changeset
   168
7114
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   169
def _charsets(ui):
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   170
    '''Obtains charsets to send mail parts not containing patches.'''
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diff changeset
   171
    charsets = [cs.lower() for cs in ui.configlist('email', 'charsets')]
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diff changeset
   172
    fallbacks = [encoding.fallbackencoding.lower(),
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diff changeset
   173
                 encoding.encoding.lower(), 'utf-8']
8343
6fbbb90261b1 mail: updated comment
Martin Geisler <mg@lazybytes.net>
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diff changeset
   174
    for cs in fallbacks: # find unique charsets while keeping order
7114
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diff changeset
   175
        if cs not in charsets:
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   176
            charsets.append(cs)
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diff changeset
   177
    return [cs for cs in charsets if not cs.endswith('ascii')]
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diff changeset
   178
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   179
def _encode(ui, s, charsets):
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   180
    '''Returns (converted) string, charset tuple.
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diff changeset
   181
    Finds out best charset by cycling through sendcharsets in descending
7948
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Matt Mackall <mpm@selenic.com>
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diff changeset
   182
    order. Tries both encoding and fallbackencoding for input. Only as
7114
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diff changeset
   183
    last resort send as is in fake ascii.
30e49d54c537 mail: add methods to handle non-ascii chars
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diff changeset
   184
    Caveat: Do not use for mail parts containing patches!'''
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diff changeset
   185
    try:
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diff changeset
   186
        s.decode('ascii')
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diff changeset
   187
    except UnicodeDecodeError:
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diff changeset
   188
        sendcharsets = charsets or _charsets(ui)
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diff changeset
   189
        for ics in (encoding.encoding, encoding.fallbackencoding):
7114
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diff changeset
   190
            try:
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diff changeset
   191
                u = s.decode(ics)
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diff changeset
   192
            except UnicodeDecodeError:
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diff changeset
   193
                continue
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diff changeset
   194
            for ocs in sendcharsets:
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diff changeset
   195
                try:
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diff changeset
   196
                    return u.encode(ocs), ocs
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diff changeset
   197
                except UnicodeEncodeError:
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diff changeset
   198
                    pass
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diff changeset
   199
                except LookupError:
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diff changeset
   200
                    ui.warn(_('ignoring invalid sendcharset: %s\n') % ocs)
7114
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diff changeset
   201
    # if ascii, or all conversion attempts fail, send (broken) ascii
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diff changeset
   202
    return s, 'us-ascii'
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diff changeset
   203
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diff changeset
   204
def headencode(ui, s, charsets=None, display=False):
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diff changeset
   205
    '''Returns RFC-2047 compliant header from given string.'''
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diff changeset
   206
    if not display:
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diff changeset
   207
        # split into words?
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   208
        s, cs = _encode(ui, s, charsets)
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diff changeset
   209
        return str(email.Header.Header(s, cs))
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diff changeset
   210
    return s
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diff changeset
   211
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diff changeset
   212
def _addressencode(ui, name, addr, charsets=None):
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diff changeset
   213
    name = headencode(ui, name, charsets)
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diff changeset
   214
    try:
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   215
        acc, dom = addr.split('@')
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diff changeset
   216
        acc = acc.encode('ascii')
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diff changeset
   217
        dom = dom.decode(encoding.encoding).encode('idna')
7114
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diff changeset
   218
        addr = '%s@%s' % (acc, dom)
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diff changeset
   219
    except UnicodeDecodeError:
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diff changeset
   220
        raise util.Abort(_('invalid email address: %s') % addr)
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diff changeset
   221
    except ValueError:
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diff changeset
   222
        try:
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diff changeset
   223
            # too strict?
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diff changeset
   224
            addr = addr.encode('ascii')
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diff changeset
   225
        except UnicodeDecodeError:
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diff changeset
   226
            raise util.Abort(_('invalid local address: %s') % addr)
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diff changeset
   227
    return email.Utils.formataddr((name, addr))
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diff changeset
   228
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diff changeset
   229
def addressencode(ui, address, charsets=None, display=False):
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diff changeset
   230
    '''Turns address into RFC-2047 compliant header.'''
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diff changeset
   231
    if display or not address:
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diff changeset
   232
        return address or ''
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diff changeset
   233
    name, addr = email.Utils.parseaddr(address)
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diff changeset
   234
    return _addressencode(ui, name, addr, charsets)
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diff changeset
   235
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diff changeset
   236
def addrlistencode(ui, addrs, charsets=None, display=False):
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diff changeset
   237
    '''Turns a list of addresses into a list of RFC-2047 compliant headers.
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diff changeset
   238
    A single element of input list may contain multiple addresses, but output
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diff changeset
   239
    always has one address per item'''
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diff changeset
   240
    if display:
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Marti Raudsepp <marti@juffo.org>
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        return [a.strip() for a in addrs if a.strip()]
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    result = []
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    for name, addr in email.Utils.getaddresses(addrs):
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        if name or addr:
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            result.append(_addressencode(ui, name, addr, charsets))
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    return result
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def mimeencode(ui, s, charsets=None, display=False):
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    '''creates mime text object, encodes it if needed, and sets
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    charset and transfer-encoding accordingly.'''
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    cs = 'us-ascii'
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    if not display:
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        s, cs = _encode(ui, s, charsets)
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    return mimetextqp(s, 'plain', cs)