468 lines
19 KiB
Python
468 lines
19 KiB
Python
import logging
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import textwrap
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from django.core.exceptions import ObjectDoesNotExist
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from django.utils.translation import ugettext_lazy as _
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from orchestra.contrib.orchestration import ServiceController, replace
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from orchestra.contrib.resources import ServiceMonitor
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#from orchestra.utils.humanize import unit_to_bytes
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from . import settings
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from .models import Address
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# TODO http://wiki2.dovecot.org/HowTo/SimpleVirtualInstall
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# TODO http://wiki2.dovecot.org/HowTo/VirtualUserFlatFilesPostfix
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# TODO mount the filesystem with "nosuid" option
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logger = logging.getLogger(__name__)
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class UNIXUserMaildirBackend(ServiceController):
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verbose_name = _("UNIX maildir user")
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model = 'mailboxes.Mailbox'
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def save(self, mailbox):
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context = self.get_context(mailbox)
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self.append(textwrap.dedent("""
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if [[ $( id %(user)s ) ]]; then
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usermod %(user)s --password '%(password)s' --shell %(initial_shell)s
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else
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useradd %(user)s --home %(home)s --password '%(password)s'
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fi
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mkdir -p %(home)s
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chmod 751 %(home)s
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chown %(user)s:%(group)s %(home)s""") % context
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)
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if hasattr(mailbox, 'resources') and hasattr(mailbox.resources, 'disk'):
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self.set_quota(mailbox, context)
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def set_quota(self, mailbox, context):
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context['quota'] = mailbox.resources.disk.allocated * mailbox.resources.disk.resource.get_scale()
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#unit_to_bytes(mailbox.resources.disk.unit)
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self.append(textwrap.dedent("""
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mkdir -p %(home)s/Maildir
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chown %(user)s:%(group)s %(home)s/Maildir
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if [[ ! -f %(home)s/Maildir/maildirsize ]]; then
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echo "%(quota)iS" > %(home)s/Maildir/maildirsize
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chown %(user)s:%(group)s %(home)s/Maildir/maildirsize
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else
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sed -i '1s/.*/%(quota)iS/' %(home)s/Maildir/maildirsize
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fi""") % context
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)
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def delete(self, mailbox):
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context = self.get_context(mailbox)
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self.append('mv %(home)s %(home)s.deleted || exit_code=1' % context)
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self.append(textwrap.dedent("""
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{ sleep 2 && killall -u %(user)s -s KILL; } &
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killall -u %(user)s || true
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userdel %(user)s || true
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groupdel %(user)s || true""") % context
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)
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def get_context(self, mailbox):
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context = {
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'user': mailbox.name,
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'group': mailbox.name,
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'password': mailbox.password if mailbox.active else '*%s' % mailbox.password,
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'home': mailbox.get_home(),
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'initial_shell': '/dev/null',
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}
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return replace(context, "'", '"')
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class DovecotPostfixPasswdVirtualUserBackend(ServiceController):
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verbose_name = _("Dovecot-Postfix virtualuser")
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model = 'mailboxes.Mailbox'
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# TODO related_models = ('resources__content_type') ?? needed for updating disk usage from resource.data
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DEFAULT_GROUP = 'postfix'
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def set_user(self, context):
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self.append(textwrap.dedent("""
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if [[ $( grep "^%(user)s:" %(passwd_path)s ) ]]; then
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sed -i 's#^%(user)s:.*#%(passwd)s#' %(passwd_path)s
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else
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echo '%(passwd)s' >> %(passwd_path)s
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fi""") % context
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)
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self.append("mkdir -p %(home)s" % context)
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self.append("chown %(uid)s:%(gid)s %(home)s" % context)
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def set_mailbox(self, context):
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self.append(textwrap.dedent("""
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if [[ ! $(grep "^%(user)s@%(mailbox_domain)s\s" %(virtual_mailbox_maps)s) ]]; then
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echo "%(user)s@%(mailbox_domain)s\tOK" >> %(virtual_mailbox_maps)s
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UPDATED_VIRTUAL_MAILBOX_MAPS=1
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fi""") % context
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)
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def generate_filter(self, mailbox, context):
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self.append("doveadm mailbox create -u %(user)s Spam" % context)
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context['filtering_path'] = settings.MAILBOXES_SIEVE_PATH % context
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filtering = mailbox.get_filtering()
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if filtering:
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context['filtering'] = '# %(banner)s\n' + filtering
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self.append("mkdir -p $(dirname '%(filtering_path)s')" % context)
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self.append("echo '%(filtering)s' > %(filtering_path)s" % context)
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else:
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self.append("rm -f %(filtering_path)s" % context)
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def save(self, mailbox):
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context = self.get_context(mailbox)
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self.set_user(context)
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self.set_mailbox(context)
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self.generate_filter(mailbox, context)
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def delete(self, mailbox):
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context = self.get_context(mailbox)
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self.append(textwrap.dedent("""\
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{ sleep 2 && killall -u %(uid)s -s KILL; } &
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killall -u %(uid)s || true
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sed -i '/^%(user)s:.*/d' %(passwd_path)s
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sed -i '/^%(user)s@%(mailbox_domain)s\s.*/d' %(virtual_mailbox_maps)s
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UPDATED_VIRTUAL_MAILBOX_MAPS=1""") % context
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)
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if context['deleted_home']:
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self.append("mv %(home)s %(deleted_home)s || exit_code=1" % context)
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else:
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self.append("rm -fr %(home)s" % context)
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def get_extra_fields(self, mailbox, context):
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context['quota'] = self.get_quota(mailbox)
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return 'userdb_mail=maildir:~/Maildir {quota}'.format(**context)
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def get_quota(self, mailbox):
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try:
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quota = mailbox.resources.disk.allocated
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except (AttributeError, ObjectDoesNotExist):
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return ''
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unit = mailbox.resources.disk.unit[0].upper()
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return 'userdb_quota_rule=*:bytes=%i%s' % (quota, unit)
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def commit(self):
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context = {
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'virtual_mailbox_maps': settings.MAILBOXES_VIRTUAL_MAILBOX_MAPS_PATH
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}
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self.append(textwrap.dedent("""\
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[[ $UPDATED_VIRTUAL_MAILBOX_MAPS == 1 ]] && {
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postmap %(virtual_mailbox_maps)s
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}""") % context
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)
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def get_context(self, mailbox):
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context = {
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'name': mailbox.name,
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'user': mailbox.name,
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'password': mailbox.password if mailbox.active else '*%s' % mailbox.password,
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'uid': 10000 + mailbox.pk,
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'gid': 10000 + mailbox.pk,
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'group': self.DEFAULT_GROUP,
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'quota': self.get_quota(mailbox),
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'passwd_path': settings.MAILBOXES_PASSWD_PATH,
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'home': mailbox.get_home(),
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'banner': self.get_banner(),
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'virtual_mailbox_maps': settings.MAILBOXES_VIRTUAL_MAILBOX_MAPS_PATH,
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'mailbox_domain': settings.MAILBOXES_VIRTUAL_MAILBOX_DEFAULT_DOMAIN,
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}
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context['extra_fields'] = self.get_extra_fields(mailbox, context)
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context.update({
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'passwd': '{user}:{password}:{uid}:{gid}::{home}::{extra_fields}'.format(**context),
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'deleted_home': settings.MAILBOXES_MOVE_ON_DELETE_PATH % context,
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})
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return replace(context, "'", '"')
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class PostfixAddressBackend(ServiceController):
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verbose_name = _("Postfix address")
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model = 'mailboxes.Address'
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related_models = (
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('mailboxes.Mailbox', 'addresses'),
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)
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def include_virtual_alias_domain(self, context):
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if context['domain'] != context['local_domain']:
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self.append(textwrap.dedent("""
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[[ $(grep '^\s*%(domain)s\s*$' %(virtual_alias_domains)s) ]] || {
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echo '%(domain)s' >> %(virtual_alias_domains)s
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UPDATED_VIRTUAL_ALIAS_DOMAINS=1
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}""") % context
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)
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def exclude_virtual_alias_domain(self, context):
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domain = context['domain']
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if not Address.objects.filter(domain=domain).exists():
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self.append("sed -i '/^%(domain)s\s*/d' %(virtual_alias_domains)s" % context)
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def update_virtual_alias_maps(self, address, context):
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# Virtual mailbox stuff
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# destination = []
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# for mailbox in address.get_mailboxes():
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# context['mailbox'] = mailbox
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# destination.append("%(mailbox)s@%(local_domain)s" % context)
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# for forward in address.forward:
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# if '@' in forward:
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# destination.append(forward)
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destination = address.destination
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if destination:
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context['destination'] = destination
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self.append(textwrap.dedent("""
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LINE='%(email)s\t%(destination)s'
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if [[ ! $(grep '^%(email)s\s' %(virtual_alias_maps)s) ]]; then
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echo "${LINE}" >> %(virtual_alias_maps)s
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UPDATED_VIRTUAL_ALIAS_MAPS=1
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else
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if [[ ! $(grep "^${LINE}$" %(virtual_alias_maps)s) ]]; then
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sed -i "s/^%(email)s\s.*$/${LINE}/" %(virtual_alias_maps)s
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UPDATED_VIRTUAL_ALIAS_MAPS=1
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fi
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fi""") % context)
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else:
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logger.warning("Address %i is empty" % address.pk)
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self.append("sed -i '/^%(email)s\s/d' %(virtual_alias_maps)s" % context)
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self.append('UPDATED_VIRTUAL_ALIAS_MAPS=1')
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def exclude_virtual_alias_maps(self, context):
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self.append(textwrap.dedent("""
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if [[ $(grep '^%(email)s\s' %(virtual_alias_maps)s) ]]; then
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sed -i '/^%(email)s\s.*$/d' %(virtual_alias_maps)s
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UPDATED_VIRTUAL_ALIAS_MAPS=1
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fi""") % context)
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def save(self, address):
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context = self.get_context(address)
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self.include_virtual_alias_domain(context)
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self.update_virtual_alias_maps(address, context)
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def delete(self, address):
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context = self.get_context(address)
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self.exclude_virtual_alias_domain(context)
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self.exclude_virtual_alias_maps(context)
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def commit(self):
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context = self.get_context_files()
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self.append(textwrap.dedent("""
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[[ $UPDATED_VIRTUAL_ALIAS_MAPS == 1 ]] && { postmap %(virtual_alias_maps)s; }
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[[ $UPDATED_VIRTUAL_ALIAS_DOMAINS == 1 ]] && { service postfix reload; }
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""") % context
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)
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self.append('exit 0')
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def get_context_files(self):
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return {
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'virtual_alias_domains': settings.MAILBOXES_VIRTUAL_ALIAS_DOMAINS_PATH,
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'virtual_alias_maps': settings.MAILBOXES_VIRTUAL_ALIAS_MAPS_PATH
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}
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def get_context(self, address):
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context = self.get_context_files()
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context.update({
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'domain': address.domain,
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'email': address.email,
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'local_domain': settings.MAILBOXES_LOCAL_DOMAIN,
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})
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return replace(context, "'", '"')
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class AutoresponseBackend(ServiceController):
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verbose_name = _("Mail autoresponse")
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model = 'mailboxes.Autoresponse'
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class DovecotMaildirDisk(ServiceMonitor):
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"""
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Maildir disk usage based on Dovecot maildirsize file
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http://wiki2.dovecot.org/Quota/Maildir
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"""
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model = 'mailboxes.Mailbox'
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resource = ServiceMonitor.DISK
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verbose_name = _("Dovecot Maildir size")
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def prepare(self):
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super(DovecotMaildirDisk, self).prepare()
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current_date = self.current_date.strftime("%Y-%m-%d %H:%M:%S %Z")
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self.append(textwrap.dedent("""\
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function monitor () {
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awk 'BEGIN { size = 0 } NR > 1 { size += $1 } END { print size }' $1 || echo 0
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}"""))
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def monitor(self, mailbox):
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context = self.get_context(mailbox)
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self.append("echo %(object_id)s $(monitor %(maildir_path)s)" % context)
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def get_context(self, mailbox):
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context = {
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'home': mailbox.get_home(),
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'object_id': mailbox.pk
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}
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context['maildir_path'] = settings.MAILBOXES_MAILDIRSIZE_PATH % context
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return replace(context, "'", '"')
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class PostfixMailscannerTraffic(ServiceMonitor):
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"""
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A high-performance log parser
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Reads the mail.log file only once, for all users
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"""
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model = 'mailboxes.Mailbox'
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resource = ServiceMonitor.TRAFFIC
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verbose_name = _("Postfix-Mailscanner traffic")
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script_executable = '/usr/bin/python'
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def prepare(self):
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mail_log = settings.MAILBOXES_MAIL_LOG_PATH
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context = {
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'current_date': self.current_date.strftime("%Y-%m-%d %H:%M:%S %Z"),
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'mail_logs': str((mail_log, mail_log+'.1')),
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}
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self.append(textwrap.dedent("""\
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import re
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import sys
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from datetime import datetime
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from dateutil import tz
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def to_local_timezone(date, tzlocal=tz.tzlocal()):
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# Converts orchestra's UTC dates to local timezone
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date = datetime.strptime(date, '%Y-%m-%d %H:%M:%S %Z')
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date = date.replace(tzinfo=tz.tzutc())
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date = date.astimezone(tzlocal)
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return date
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maillogs = {mail_logs}
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end_datetime = to_local_timezone('{current_date}')
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end_date = int(end_datetime.strftime('%Y%m%d%H%M%S'))
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months = {{
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"Jan": "01",
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"Feb": "02",
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"Mar": "03",
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"Apr": "04",
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"May": "05",
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"Jun": "06",
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"Jul": "07",
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"Aug": "08",
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"Sep": "09",
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"Oct": "10",
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"Nov": "11",
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"Dec": "12",
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}}
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def inside_period(month, day, time, ini_date):
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global months
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global end_datetime
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# Mar 9 17:13:22
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month = months[month]
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year = end_datetime.year
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if month == '12' and end_datetime.month == 1:
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year = year+1
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if len(day) == 1:
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day = '0' + day
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date = str(year) + month + day
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date += time.replace(':', '')
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return ini_date < int(date) < end_date
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users = {{}}
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delivers = {{}}
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reverse = {{}}
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def prepare(object_id, mailbox, ini_date):
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global users
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global delivers
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global reverse
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ini_date = to_local_timezone(ini_date)
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ini_date = int(ini_date.strftime('%Y%m%d%H%M%S'))
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users[mailbox] = (ini_date, object_id)
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delivers[mailbox] = set()
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reverse[mailbox] = set()
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def monitor(users, delivers, reverse, maillogs):
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targets = {{}}
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counter = {{}}
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user_regex = re.compile(r'\(Authenticated sender: ([^ ]+)\)')
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for maillog in maillogs:
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try:
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with open(maillog, 'r') as maillog:
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for line in maillog.readlines():
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# Only search for Authenticated sendings
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if '(Authenticated sender: ' in line:
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username = user_regex.search(line).groups()[0]
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try:
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sender = users[username]
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except KeyError:
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continue
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else:
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month, day, time, __, proc, id = line.split()[:6]
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if inside_period(month, day, time, sender[0]):
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# Add new email
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delivers[id[:-1]] = username
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# Look for a MailScanner requeue ID
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elif ' Requeue: ' in line:
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id, __, req_id = line.split()[6:9]
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id = id.split('.')[0]
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try:
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username = delivers[id]
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except KeyError:
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pass
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else:
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targets[req_id] = (username, 0)
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reverse[username].add(req_id)
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# Look for the mail size and count the number of recipients of each email
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else:
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try:
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month, day, time, __, proc, req_id, __, msize = line.split()[:8]
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except ValueError:
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# not interested in this line
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continue
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if proc.startswith('postfix/'):
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req_id = req_id[:-1]
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if msize.startswith('size='):
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try:
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target = targets[req_id]
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except KeyError:
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pass
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else:
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targets[req_id] = (target[0], int(msize[5:-1]))
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elif proc.startswith('postfix/smtp'):
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try:
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target = targets[req_id]
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except KeyError:
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pass
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else:
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if inside_period(month, day, time, users[target[0]][0]):
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try:
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counter[req_id] += 1
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except KeyError:
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counter[req_id] = 1
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except IOError as e:
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sys.stderr.write(e)
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for username, opts in users.iteritems():
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size = 0
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for req_id in reverse[username]:
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size += targets[req_id][1] * counter.get(req_id, 0)
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print opts[1], size
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""").format(**context)
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)
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def commit(self):
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self.append('monitor(users, delivers, reverse, maillogs)')
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def monitor(self, mailbox):
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context = self.get_context(mailbox)
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self.append("prepare(%(object_id)s, '%(mailbox)s', '%(last_date)s')" % context)
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def get_context(self, mailbox):
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context = {
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'mailbox': mailbox.name,
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'object_id': mailbox.pk,
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'last_date': self.get_last_date(mailbox.pk).strftime("%Y-%m-%d %H:%M:%S %Z"),
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}
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return replace(context, "'", '"')
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