/usr/share/enemies-of-carlotta/eoc.py is in enemies-of-carlotta 1.2.6-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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This is a simple mailing list manager that mimicks the ezmlm-idx mail
address commands. See manual page for more information.
"""
VERSION = "1.2.6"
PLUGIN_INTERFACE_VERSION = "1"
import getopt
import hashlib
import os
import shutil
import smtplib
import string
import sys
import time
import ConfigParser
try:
import email.Header
have_email_module = 1
except ImportError:
have_email_module = 0
import imp
import qmqp
# The following values will be overriden by "make install".
TEMPLATE_DIRS = ["/usr/share/enemies-of-carlotta"]
DOTDIR = os.path.expanduser("~/.enemies-of-carlotta")
class EocException(Exception):
def __init__(self, arg=None):
self.msg = repr(arg)
def __str__(self):
return self.msg
class UnknownList(EocException):
def __init__(self, list_name):
self.msg = "%s is not a known mailing list" % list_name
class BadCommandAddress(EocException):
def __init__(self, address):
self.msg = "%s is not a valid command address" % address
class BadSignature(EocException):
def __init__(self, address):
self.msg = "address %s has an invalid digital signature" % address
class ListExists(EocException):
def __init__(self, list_name):
self.msg = "Mailing list %s alreadys exists" % list_name
class ListDoesNotExist(EocException):
def __init__(self, list_name):
self.msg = "Mailing list %s does not exist" % list_name
class MissingEnvironmentVariable(EocException):
def __init__(self, name):
self.msg = "Environment variable %s does not exist" % name
class MissingTemplate(EocException):
def __init__(self, template):
self.msg = "Template %s does not exit" % template
# Names of commands EoC recognizes in e-mail addresses.
SIMPLE_COMMANDS = ["help", "list", "owner", "setlist", "setlistsilently", "ignore"]
SUB_COMMANDS = ["subscribe", "unsubscribe"]
HASH_COMMANDS = ["subyes", "subapprove", "subreject", "unsubyes",
"bounce", "probe", "approve", "reject", "setlistyes",
"setlistsilentyes"]
COMMANDS = SIMPLE_COMMANDS + SUB_COMMANDS + HASH_COMMANDS
def md5sum_as_hex(s):
return hashlib.md5(s).hexdigest()
def forkexec(argv, text):
"""Run a command (given as argv array) and write text to its stdin"""
(r, w) = os.pipe()
pid = os.fork()
if pid == -1:
raise Exception("fork failed")
elif pid == 0:
os.dup2(r, 0)
os.close(r)
os.close(w)
fd = os.open("/dev/null", os.O_RDWR)
os.dup2(fd, 1)
os.dup2(fd, 2)
os.execvp(argv[0], argv)
sys.exit(1)
else:
os.close(r)
os.write(w, text)
os.close(w)
(pid2, exit) = os.waitpid(pid, 0)
if pid != pid2:
raise Exception("os.waitpid for %d returned for %d" % (pid, pid2))
if exit != 0:
raise Exception("subprocess failed, exit=0x%x" % exit)
return exit
environ = None
def set_environ(new_environ):
global environ
environ = new_environ
def get_from_environ(key):
global environ
if environ:
env = environ
else:
env = os.environ
if env.has_key(key):
return env[key].lower()
raise MissingEnvironmentVariable(key)
class AddressParser:
"""A parser for incoming e-mail addresses."""
def __init__(self, lists):
self.set_lists(lists)
self.set_skip_prefix(None)
self.set_forced_domain(None)
def set_lists(self, lists):
"""Set the list of canonical list names we should know about."""
self.lists = lists
def set_skip_prefix(self, skip_prefix):
"""Set the prefix to be removed from an address."""
self.skip_prefix = skip_prefix
def set_forced_domain(self, forced_domain):
"""Set the domain part we should force the address to have."""
self.forced_domain = forced_domain
def clean(self, address):
"""Remove cruft from the address and convert the rest to lower case."""
if self.skip_prefix:
n = self.skip_prefix and len(self.skip_prefix)
if address[:n] == self.skip_prefix:
address = address[n:]
if self.forced_domain:
parts = address.split("@", 1)
address = "%s@%s" % (parts[0], self.forced_domain)
return address.lower()
def split_address(self, address):
"""Split an address to a local part and a domain."""
parts = address.lower().split("@", 1)
if len(parts) != 2:
return (address, "")
else:
return parts
# Does an address refer to a list? If not, return None, else return a list
# of additional parts (separated by hyphens) in the address. Note that []
# is not the same as None.
def additional_address_parts(self, address, listname):
addr_local, addr_domain = self.split_address(address)
list_local, list_domain = self.split_address(listname)
if addr_domain != list_domain:
return None
if addr_local.lower() == list_local.lower():
return []
n = len(list_local)
if addr_local[:n] != list_local or addr_local[n] != "-":
return None
return addr_local[n+1:].split("-")
# Parse an address we have received that identifies a list we manage.
# The address may contain command and signature parts. Return the name
# of the list, and a sequence of the additional parts (split at hyphens).
# Raise exceptions for errors. Note that the command will be valid, but
# cryptographic signatures in the address is not checked.
def parse(self, address):
address = self.clean(address)
for listname in self.lists:
parts = self.additional_address_parts(address, listname)
if parts == None:
pass
elif parts == []:
return listname, parts
elif parts[0] in HASH_COMMANDS:
if len(parts) != 3:
raise BadCommandAddress(address)
return listname, parts
elif parts[0] in COMMANDS:
return listname, parts
raise UnknownList(address)
class MailingListManager:
def __init__(self, dotdir, sendmail="/usr/sbin/sendmail", lists=[],
smtp_server=None, qmqp_server=None):
self.dotdir = dotdir
self.sendmail = sendmail
self.smtp_server = smtp_server
self.qmqp_server = qmqp_server
self.make_dotdir()
self.secret = self.make_and_read_secret()
if not lists:
lists = filter(lambda s: "@" in s, os.listdir(dotdir))
self.set_lists(lists)
self.simple_commands = ["help", "list", "owner", "setlist",
"setlistsilently", "ignore"]
self.sub_commands = ["subscribe", "unsubscribe"]
self.hash_commands = ["subyes", "subapprove", "subreject", "unsubyes",
"bounce", "probe", "approve", "reject",
"setlistyes", "setlistsilentyes"]
self.commands = self.simple_commands + self.sub_commands + \
self.hash_commands
self.environ = None
self.load_plugins()
# Create the dot directory for us, if it doesn't exist already.
def make_dotdir(self):
if not os.path.isdir(self.dotdir):
os.makedirs(self.dotdir, 0700)
# Create the "secret" file, with a random value used as cookie for
# verification addresses.
def make_and_read_secret(self):
secret_name = os.path.join(self.dotdir, "secret")
if not os.path.isfile(secret_name):
f = open("/dev/urandom", "r")
secret = f.read(32)
f.close()
f = open(secret_name, "w")
f.write(secret)
f.close()
else:
f = open(secret_name, "r")
secret = f.read()
f.close()
return secret
# Load the plugins from DOTDIR/plugins/*.py.
def load_plugins(self):
self.plugins = []
dirname = os.path.join(DOTDIR, "plugins")
try:
plugins = os.listdir(dirname)
except OSError:
return
plugins.sort()
plugins = map(os.path.splitext, plugins)
plugins = filter(lambda p: p[1] == ".py", plugins)
plugins = map(lambda p: p[0], plugins)
for name in plugins:
pathname = os.path.join(dirname, name + ".py")
f = open(pathname, "r")
module = imp.load_module(name, f, pathname,
(".py", "r", imp.PY_SOURCE))
f.close()
if module.PLUGIN_INTERFACE_VERSION == PLUGIN_INTERFACE_VERSION:
self.plugins.append(module)
# Call function named funcname (a string) in all plugins, giving as
# arguments all the remaining arguments preceded by ml. Return value
# of each function is the new list of arguments to the next function.
# Return value of this function is the return value of the last function.
def call_plugins(self, funcname, list, *args):
for plugin in self.plugins:
if plugin.__dict__.has_key(funcname):
args = apply(plugin.__dict__[funcname], (list,) + args)
if type(args) != type((0,)):
args = (args,)
return args
# Set the list of listnames. The list of lists needs to be sorted in
# length order so that test@example.com is matched before
# test-list@example.com
def set_lists(self, lists):
temp = map(lambda s: (len(s), s), lists)
temp.sort()
self.lists = map(lambda t: t[1], temp)
# Return the list of listnames.
def get_lists(self):
return self.lists
# Decode an address that has been encoded to be part of a local part.
def decode_address(self, parts):
return string.join(string.join(parts, "-").split("="), "@")
# Is local_part@domain an existing list?
def is_list_name(self, local_part, domain):
return ("%s@%s" % (local_part, domain)) in self.lists
# Compute the verification checksum for an address.
def compute_hash(self, address):
return md5sum_as_hex(address + self.secret)
# Is the verification signature in a parsed address bad? If so, return true,
# otherwise return false.
def signature_is_bad(self, dict, hash):
local_part, domain = dict["name"].split("@")
address = "%s-%s-%s@%s" % (local_part, dict["command"], dict["id"],
domain)
correct = self.compute_hash(address)
return correct != hash
# Parse a command address we have received and check its validity
# (including signature, if any). Return a dictionary with keys
# "command", "sender" (address that was encoded into address, if
# any), "id" (group ID).
def parse_recipient_address(self, address, skip_prefix, forced_domain):
ap = AddressParser(self.get_lists())
ap.set_lists(self.get_lists())
ap.set_skip_prefix(skip_prefix)
ap.set_forced_domain(forced_domain)
listname, parts = ap.parse(address)
dict = { "name": listname }
if parts == []:
dict["command"] = "post"
else:
command, args = parts[0], parts[1:]
dict["command"] = command
if command in SUB_COMMANDS:
dict["sender"] = self.decode_address(args)
elif command in HASH_COMMANDS:
dict["id"] = args[0]
hash = args[1]
if self.signature_is_bad(dict, hash):
raise BadSignature(address)
return dict
# Does an address refer to a mailing list?
def is_list(self, name, skip_prefix=None, domain=None):
try:
self.parse_recipient_address(name, skip_prefix, domain)
except BadCommandAddress:
return 0
except BadSignature:
return 0
except UnknownList:
return 0
return 1
# Create a new list and return it.
def create_list(self, name):
if self.is_list(name):
raise ListExists(name)
self.set_lists(self.lists + [name])
return MailingList(self, name)
# Open an existing list.
def open_list(self, name):
if self.is_list(name):
return self.open_list_exact(name)
else:
x = name + "@"
for list in self.lists:
if list[:len(x)] == x:
return self.open_list_exact(list)
raise ListDoesNotExist(name)
def open_list_exact(self, name):
for list in self.get_lists():
if list.lower() == name.lower():
return MailingList(self, list)
raise ListDoesNotExist(name)
# Process an incoming message.
def incoming_message(self, skip_prefix, domain, moderate, post):
debug("Processing incoming message.")
debug("$SENDER = <%s>" % get_from_environ("SENDER"))
debug("$RECIPIENT = <%s>" % get_from_environ("RECIPIENT"))
dict = self.parse_recipient_address(get_from_environ("RECIPIENT"),
skip_prefix,
domain)
dict["force-moderation"] = moderate
dict["force-posting"] = post
debug("List is <%(name)s>, command is <%(command)s>." % dict)
list = self.open_list_exact(dict["name"])
list.obey(dict)
# Clean up bouncing address and do other janitorial work for all lists.
def cleaning_woman(self, send_mail=None):
now = time.time()
for listname in self.lists:
list = self.open_list_exact(listname)
if send_mail:
list.send_mail = send_mail
list.cleaning_woman(now)
# Send a mail to the desired recipients.
def send_mail(self, envelope_sender, recipients, text):
debug("send_mail:\n sender=%s\n recipients=%s\n text=\n %s" %
(envelope_sender, str(recipients),
"\n ".join(text[:text.find("\n\n")].split("\n"))))
if recipients:
if self.smtp_server:
try:
smtp = smtplib.SMTP(self.smtp_server)
smtp.sendmail(envelope_sender, recipients, text)
smtp.quit()
except:
error("Error sending SMTP mail, mail probably not sent")
sys.exit(1)
elif self.qmqp_server:
try:
q = qmqp.QMQP(self.qmqp_server)
q.sendmail(envelope_sender, recipients, text)
q.quit()
except:
error("Error sending QMQP mail, mail probably not sent")
sys.exit(1)
else:
status = forkexec([self.sendmail, "-oi", "-f",
envelope_sender] + recipients, text)
if status:
error("%s returned %s, mail sending probably failed" %
(self.sendmail, status))
sys.exit((status >> 8) & 0xff)
else:
debug("send_mail: no recipients, not sending")
class MailingList:
posting_opts = ["auto", "free", "moderated"]
def __init__(self, mlm, name):
self.mlm = mlm
self.name = name
self.cp = ConfigParser.ConfigParser()
self.cp.add_section("list")
self.cp.set("list", "owners", "")
self.cp.set("list", "moderators", "")
self.cp.set("list", "subscription", "free")
self.cp.set("list", "posting", "free")
self.cp.set("list", "archived", "no")
self.cp.set("list", "mail-on-subscription-changes", "no")
self.cp.set("list", "mail-on-forced-unsubscribe", "no")
self.cp.set("list", "ignore-bounce", "no")
self.cp.set("list", "language", "")
self.cp.set("list", "pristine-headers", "")
self.dirname = os.path.join(self.mlm.dotdir, name)
self.make_listdir()
self.cp.read(self.mkname("config"))
self.subscribers = SubscriberDatabase(self.dirname, "subscribers")
self.moderation_box = MessageBox(self.dirname, "moderation-box")
self.subscription_box = MessageBox(self.dirname, "subscription-box")
self.bounce_box = MessageBox(self.dirname, "bounce-box")
def make_listdir(self):
if not os.path.isdir(self.dirname):
os.mkdir(self.dirname, 0700)
self.save_config()
f = open(self.mkname("subscribers"), "w")
f.close()
def mkname(self, relative):
return os.path.join(self.dirname, relative)
def save_config(self):
f = open(self.mkname("config"), "w")
self.cp.write(f)
f.close()
def read_stdin(self):
data = sys.stdin.read()
# Convert CRLF to plain LF
data = "\n".join(data.split("\r\n"))
# Skip Unix mbox "From " mail start indicator
if data[:5] == "From ":
data = string.split(data, "\n", 1)[1]
return data
def invent_boundary(self):
return "%s/%s" % (md5sum_as_hex(str(time.time())),
md5sum_as_hex(self.name))
def command_address(self, command):
local_part, domain = self.name.split("@")
return "%s-%s@%s" % (local_part, command, domain)
def signed_address(self, command, id):
unsigned = self.command_address("%s-%s" % (command, id))
hash = self.mlm.compute_hash(unsigned)
return self.command_address("%s-%s-%s" % (command, id, hash))
def ignore(self):
return self.command_address("ignore")
def nice_7bit(self, str):
for c in str:
if (ord(c) < 32 and not c.isspace()) or ord(c) >= 127:
return False
return True
def mime_encode_headers(self, text):
try:
headers, body = text.split("\n\n", 1)
list = []
for line in headers.split("\n"):
if line[0].isspace():
list[-1] += line
else:
list.append(line)
headers = []
for header in list:
if self.nice_7bit(header):
headers.append(header)
else:
if ": " in header:
name, content = header.split(": ", 1)
else:
name, content = header.split(":", 1)
hdr = email.Header.Header(content, "utf-8")
headers.append(name + ": " + hdr.encode())
return "\n".join(headers) + "\n\n" + body
except:
info("Cannot MIME encode header, using original ones, sorry")
return text
def template(self, template_name, dict):
lang = self.cp.get("list", "language")
if lang:
template_name_lang = template_name + "." + lang
else:
template_name_lang = template_name
if not dict.has_key("list"):
dict["list"] = self.name
dict["local"], dict["domain"] = self.name.split("@")
if not dict.has_key("list"):
dict["list"] = self.name
for dir in [os.path.join(self.dirname, "templates")] + TEMPLATE_DIRS:
pathname = os.path.join(dir, template_name_lang)
if not os.path.exists(pathname):
pathname = os.path.join(dir, template_name)
if os.path.exists(pathname):
f = open(pathname, "r")
data = f.read()
f.close()
return data % dict
raise MissingTemplate(template_name)
def send_template(self, envelope_sender, sender, recipients,
template_name, dict):
dict["From"] = "EoC <%s>" % sender
dict["To"] = string.join(recipients, ", ")
text = self.template(template_name, dict)
if not text:
return
if self.cp.get("list", "pristine-headers") != "yes":
text = self.mime_encode_headers(text)
self.mlm.send_mail(envelope_sender, recipients, text)
def send_info_message(self, recipients, template_name, dict):
self.send_template(self.command_address("ignore"),
self.command_address("help"),
recipients,
template_name,
dict)
def owners(self):
return self.cp.get("list", "owners").split()
def moderators(self):
return self.cp.get("list", "moderators").split()
def is_list_owner(self, address):
return address in self.owners()
def obey_help(self):
self.send_info_message([get_from_environ("SENDER")], "help", {})
def obey_list(self):
recipient = get_from_environ("SENDER")
if self.is_list_owner(recipient):
addr_list = self.subscribers.get_all()
addr_text = string.join(addr_list, "\n")
self.send_info_message([recipient], "list",
{
"addresses": addr_text,
"count": len(addr_list),
})
else:
self.send_info_message([recipient], "list-sorry", {})
def obey_setlist(self, origmail):
recipient = get_from_environ("SENDER")
if self.is_list_owner(recipient):
id = self.moderation_box.add(recipient, origmail)
if self.parse_setlist_addresses(origmail) == None:
self.send_bad_addresses_in_setlist(id)
self.moderation_box.remove(id)
else:
confirm = self.signed_address("setlistyes", id)
self.send_info_message(self.owners(), "setlist-confirm",
{
"confirm": confirm,
"origmail": origmail,
"boundary": self.invent_boundary(),
})
else:
self.send_info_message([recipient], "setlist-sorry", {})
def obey_setlistsilently(self, origmail):
recipient = get_from_environ("SENDER")
if self.is_list_owner(recipient):
id = self.moderation_box.add(recipient, origmail)
if self.parse_setlist_addresses(origmail) == None:
self.send_bad_addresses_in_setlist(id)
self.moderation_box.remove(id)
else:
confirm = self.signed_address("setlistsilentyes", id)
self.send_info_message(self.owners(), "setlist-confirm",
{
"confirm": confirm,
"origmail": origmail,
"boundary": self.invent_boundary(),
})
else:
self.send_info_message([recipient], "setlist-sorry", {})
def parse_setlist_addresses(self, text):
body = text.split("\n\n", 1)[1]
lines = body.split("\n")
lines = filter(lambda line: line != "", lines)
badlines = filter(lambda line: "@" not in line, lines)
if badlines:
return None
else:
return lines
def send_bad_addresses_in_setlist(self, id):
addr = self.moderation_box.get_address(id)
origmail = self.moderation_box.get(id)
self.send_info_message([addr], "setlist-badlist",
{
"origmail": origmail,
"boundary": self.invent_boundary(),
})
def obey_setlistyes(self, dict):
if self.moderation_box.has(dict["id"]):
text = self.moderation_box.get(dict["id"])
addresses = self.parse_setlist_addresses(text)
if addresses == None:
self.send_bad_addresses_in_setlist(id)
else:
removed_subscribers = []
self.subscribers.lock()
old = self.subscribers.get_all()
for address in old:
if address.lower() not in map(string.lower, addresses):
self.subscribers.remove(address)
removed_subscribers.append(address)
else:
for x in addresses:
if x.lower() == address.lower():
addresses.remove(x)
self.subscribers.add_many(addresses)
self.subscribers.save()
for recipient in addresses:
self.send_info_message([recipient], "sub-welcome", {})
for recipient in removed_subscribers:
self.send_info_message([recipient], "unsub-goodbye", {})
self.send_info_message(self.owners(), "setlist-done", {})
self.moderation_box.remove(dict["id"])
def obey_setlistsilentyes(self, dict):
if self.moderation_box.has(dict["id"]):
text = self.moderation_box.get(dict["id"])
addresses = self.parse_setlist_addresses(text)
if addresses == None:
self.send_bad_addresses_in_setlist(id)
else:
self.subscribers.lock()
old = self.subscribers.get_all()
for address in old:
if address not in addresses:
self.subscribers.remove(address)
else:
addresses.remove(address)
self.subscribers.add_many(addresses)
self.subscribers.save()
self.send_info_message(self.owners(), "setlist-done", {})
self.moderation_box.remove(dict["id"])
def obey_owner(self, text):
sender = get_from_environ("SENDER")
recipients = self.cp.get("list", "owners").split()
self.mlm.send_mail(sender, recipients, text)
def obey_subscribe_or_unsubscribe(self, dict, template_name, command,
origmail):
requester = get_from_environ("SENDER")
subscriber = dict["sender"]
if not subscriber:
subscriber = requester
if subscriber.find("@") == -1:
info("Trying to (un)subscribe address without @: %s" % subscriber)
return
if self.cp.get("list", "ignore-bounce") == "yes":
info("Will not (un)subscribe address: %s from static list" %subscriber)
return
if requester in self.owners():
confirmers = self.owners()
else:
confirmers = [subscriber]
id = self.subscription_box.add(subscriber, origmail)
confirm = self.signed_address(command, id)
self.send_info_message(confirmers, template_name,
{
"confirm": confirm,
"origmail": origmail,
"boundary": self.invent_boundary(),
})
def obey_subscribe(self, dict, origmail):
self.obey_subscribe_or_unsubscribe(dict, "sub-confirm", "subyes",
origmail)
def obey_unsubscribe(self, dict, origmail):
self.obey_subscribe_or_unsubscribe(dict, "unsub-confirm", "unsubyes",
origmail)
def obey_subyes(self, dict):
if self.subscription_box.has(dict["id"]):
if self.cp.get("list", "subscription") == "free":
recipient = self.subscription_box.get_address(dict["id"])
self.subscribers.lock()
self.subscribers.add(recipient)
self.subscribers.save()
sender = self.command_address("help")
self.send_template(self.ignore(), sender, [recipient],
"sub-welcome", {})
self.subscription_box.remove(dict["id"])
if self.cp.get("list", "mail-on-subscription-changes")=="yes":
self.send_info_message(self.owners(),
"sub-owner-notification",
{
"address": recipient,
})
else:
recipients = self.cp.get("list", "owners").split()
confirm = self.signed_address("subapprove", dict["id"])
deny = self.signed_address("subreject", dict["id"])
subscriber = self.subscription_box.get_address(dict["id"])
origmail = self.subscription_box.get(dict["id"])
self.send_template(self.ignore(), deny, recipients,
"sub-moderate",
{
"confirm": confirm,
"deny": deny,
"subscriber": subscriber,
"origmail": origmail,
"boundary": self.invent_boundary(),
})
recipient = self.subscription_box.get_address(dict["id"])
self.send_info_message([recipient], "sub-wait", {})
def obey_subapprove(self, dict):
if self.subscription_box.has(dict["id"]):
recipient = self.subscription_box.get_address(dict["id"])
self.subscribers.lock()
self.subscribers.add(recipient)
self.subscribers.save()
self.send_info_message([recipient], "sub-welcome", {})
self.subscription_box.remove(dict["id"])
if self.cp.get("list", "mail-on-subscription-changes")=="yes":
self.send_info_message(self.owners(), "sub-owner-notification",
{
"address": recipient,
})
def obey_subreject(self, dict):
if self.subscription_box.has(dict["id"]):
recipient = self.subscription_box.get_address(dict["id"])
self.send_info_message([recipient], "sub-reject", {})
self.subscription_box.remove(dict["id"])
def obey_unsubyes(self, dict):
if self.subscription_box.has(dict["id"]):
recipient = self.subscription_box.get_address(dict["id"])
self.subscribers.lock()
self.subscribers.remove(recipient)
self.subscribers.save()
self.send_info_message([recipient], "unsub-goodbye", {})
self.subscription_box.remove(dict["id"])
if self.cp.get("list", "mail-on-subscription-changes")=="yes":
self.send_info_message(self.owners(),
"unsub-owner-notification",
{
"address": recipient,
})
def store_into_archive(self, text):
if self.cp.get("list", "archived") == "yes":
archdir = os.path.join(self.dirname, "archive")
if not os.path.exists(archdir):
os.mkdir(archdir, 0700)
id = md5sum_as_hex(text)
f = open(os.path.join(archdir, id), "w")
f.write(text)
f.close()
def list_headers(self):
local, domain = self.name.split("@")
list = []
list.append("List-Id: <%s.%s>" % (local, domain))
list.append("List-Help: <mailto:%s-help@%s>" % (local, domain))
list.append("List-Unsubscribe: <mailto:%s-unsubscribe@%s>" %
(local, domain))
list.append("List-Subscribe: <mailto:%s-subscribe@%s>" %
(local, domain))
list.append("List-Post: <mailto:%s@%s>" % (local, domain))
list.append("List-Owner: <mailto:%s-owner@%s>" % (local, domain))
list.append("Precedence: bulk");
return string.join(list, "\n") + "\n"
def read_file(self, basename):
try:
f = open(os.path.join(self.dirname, basename), "r")
data = f.read()
f.close()
return data
except IOError:
return ""
def headers_to_add(self):
headers_to_add = self.read_file("headers-to-add").rstrip()
if headers_to_add:
return headers_to_add + "\n"
else:
return ""
def remove_some_headers(self, mail, headers_to_remove):
endpos = mail.find("\n\n")
if endpos == -1:
endpos = mail.find("\n\r\n")
if endpos == -1:
return mail
headers = mail[:endpos].split("\n")
body = mail[endpos:]
headers_to_remove = [x.lower() for x in headers_to_remove]
remaining = []
add_continuation_lines = 0
for header in headers:
if header[0] in [' ','\t']:
# this is a continuation line
if add_continuation_lines:
remaining.append(header)
else:
pos = header.find(":")
if pos == -1:
# malformed message, try to remove the junk
add_continuation_lines = 0
continue
name = header[:pos].lower()
if name in headers_to_remove:
add_continuation_lines = 0
else:
add_continuation_lines = 1
remaining.append(header)
return "\n".join(remaining) + body
def headers_to_remove(self, text):
headers_to_remove = self.read_file("headers-to-remove").split("\n")
headers_to_remove = map(lambda s: s.strip().lower(),
headers_to_remove)
return self.remove_some_headers(text, headers_to_remove)
def append_footer(self, text):
if "base64" in text or "BASE64" in text:
import StringIO
for line in StringIO.StringIO(text):
if line.lower().startswith("content-transfer-encoding:") and \
"base64" in line.lower():
return text
return text + self.template("footer", {})
def send_mail_to_subscribers(self, text):
text = self.remove_some_headers(text, ["list-id", "list-help",
"list-unsubscribe",
"list-subscribe", "list-post",
"list-owner", "precedence"])
text = self.headers_to_add() + self.list_headers() + \
self.headers_to_remove(text)
text = self.append_footer(text)
text, = self.mlm.call_plugins("send_mail_to_subscribers_hook",
self, text)
if have_email_module and \
self.cp.get("list", "pristine-headers") != "yes":
text = self.mime_encode_headers(text)
self.store_into_archive(text)
for group in self.subscribers.groups():
bounce = self.signed_address("bounce", group)
addresses = self.subscribers.in_group(group)
self.mlm.send_mail(bounce, addresses, text)
def post_into_moderate(self, poster, dict, text):
id = self.moderation_box.add(poster, text)
recipients = self.moderators()
if recipients == []:
recipients = self.owners()
confirm = self.signed_address("approve", id)
deny = self.signed_address("reject", id)
self.send_template(self.ignore(), deny, recipients, "msg-moderate",
{
"confirm": confirm,
"deny": deny,
"origmail": text,
"boundary": self.invent_boundary(),
})
self.send_info_message([poster], "msg-wait", {})
def should_be_moderated(self, posting, poster):
if posting == "moderated":
return 1
if posting == "auto":
if poster.lower() not in \
map(string.lower, self.subscribers.get_all()):
return 1
return 0
def obey_post(self, dict, text):
if dict.has_key("force-moderation") and dict["force-moderation"]:
force_moderation = 1
else:
force_moderation = 0
if dict.has_key("force-posting") and dict["force-posting"]:
force_posting = 1
else:
force_posting = 0
posting = self.cp.get("list", "posting")
if posting not in self.posting_opts:
error("You have a weird 'posting' config. Please, review it")
poster = get_from_environ("SENDER")
if force_moderation:
self.post_into_moderate(poster, dict, text)
elif force_posting:
self.send_mail_to_subscribers(text)
elif self.should_be_moderated(posting, poster):
self.post_into_moderate(poster, dict, text)
else:
self.send_mail_to_subscribers(text)
def obey_approve(self, dict):
if self.moderation_box.lock(dict["id"]):
if self.moderation_box.has(dict["id"]):
text = self.moderation_box.get(dict["id"])
self.send_mail_to_subscribers(text)
self.moderation_box.remove(dict["id"])
self.moderation_box.unlock(dict["id"])
def obey_reject(self, dict):
if self.moderation_box.lock(dict["id"]):
if self.moderation_box.has(dict["id"]):
self.moderation_box.remove(dict["id"])
self.moderation_box.unlock(dict["id"])
def split_address_list(self, addrs):
domains = {}
for addr in addrs:
userpart, domain = addr.split("@")
if domains.has_key(domain):
domains[domain].append(addr)
else:
domains[domain] = [addr]
result = []
if len(domains.keys()) == 1:
for addr in addrs:
result.append([addr])
else:
result = domains.values()
return result
def obey_bounce(self, dict, text):
if self.subscribers.has_group(dict["id"]):
self.subscribers.lock()
addrs = self.subscribers.in_group(dict["id"])
if len(addrs) == 1:
if self.cp.get("list", "ignore-bounce") == "yes":
info("Address <%s> bounced, ignoring bounce as configured." %
addrs[0])
self.subscribers.unlock()
return
debug("Address <%s> bounced, setting state to bounce." %
addrs[0])
bounce_id = self.bounce_box.add(addrs[0], text[:4096])
self.subscribers.set(dict["id"], "status", "bounced")
self.subscribers.set(dict["id"], "timestamp-bounced",
"%f" % time.time())
self.subscribers.set(dict["id"], "bounce-id",
bounce_id)
else:
debug("Group %s bounced, splitting." % dict["id"])
for new_addrs in self.split_address_list(addrs):
self.subscribers.add_many(new_addrs)
self.subscribers.remove_group(dict["id"])
self.subscribers.save()
else:
debug("Ignoring bounce, group %s doesn't exist (anymore?)." %
dict["id"])
def obey_probe(self, dict, text):
id = dict["id"]
if self.subscribers.has_group(id):
self.subscribers.lock()
if self.subscribers.get(id, "status") == "probed":
self.subscribers.set(id, "status", "probebounced")
self.subscribers.save()
def obey(self, dict):
text = self.read_stdin()
if dict["command"] in ["help", "list", "subscribe", "unsubscribe",
"subyes", "subapprove", "subreject",
"unsubyes", "post", "approve"]:
sender = get_from_environ("SENDER")
if not sender:
debug("Ignoring bounce message for %s command." %
dict["command"])
return
if dict["command"] == "help":
self.obey_help()
elif dict["command"] == "list":
self.obey_list()
elif dict["command"] == "owner":
self.obey_owner(text)
elif dict["command"] == "subscribe":
self.obey_subscribe(dict, text)
elif dict["command"] == "unsubscribe":
self.obey_unsubscribe(dict, text)
elif dict["command"] == "subyes":
self.obey_subyes(dict)
elif dict["command"] == "subapprove":
self.obey_subapprove(dict)
elif dict["command"] == "subreject":
self.obey_subreject(dict)
elif dict["command"] == "unsubyes":
self.obey_unsubyes(dict)
elif dict["command"] == "post":
self.obey_post(dict, text)
elif dict["command"] == "approve":
self.obey_approve(dict)
elif dict["command"] == "reject":
self.obey_reject(dict)
elif dict["command"] == "bounce":
self.obey_bounce(dict, text)
elif dict["command"] == "probe":
self.obey_probe(dict, text)
elif dict["command"] == "setlist":
self.obey_setlist(text)
elif dict["command"] == "setlistsilently":
self.obey_setlistsilently(text)
elif dict["command"] == "setlistyes":
self.obey_setlistyes(dict)
elif dict["command"] == "setlistsilentyes":
self.obey_setlistsilentyes(dict)
elif dict["command"] == "ignore":
pass
def get_bounce_text(self, id):
bounce_id = self.subscribers.get(id, "bounce-id")
if self.bounce_box.has(bounce_id):
bounce_text = self.bounce_box.get(bounce_id)
bounce_text = string.join(map(lambda s: "> " + s + "\n",
bounce_text.split("\n")), "")
else:
bounce_text = "Bounce message not available."
return bounce_text
one_week = 7.0 * 24.0 * 60.0 * 60.0
def handle_bounced_groups(self, now):
for id in self.subscribers.groups():
status = self.subscribers.get(id, "status")
t = float(self.subscribers.get(id, "timestamp-bounced"))
if status == "bounced":
if now - t > self.one_week:
sender = self.signed_address("probe", id)
recipients = self.subscribers.in_group(id)
self.send_template(sender, sender, recipients,
"bounce-warning", {
"bounce": self.get_bounce_text(id),
"boundary": self.invent_boundary(),
})
self.subscribers.set(id, "status", "probed")
elif status == "probed":
if now - t > 2 * self.one_week:
debug(("Cleaning woman: probe didn't bounce " +
"for group <%s>, setting status to ok.") % id)
self.subscribers.set(id, "status", "ok")
self.bounce_box.remove(
self.subscribers.get(id, "bounce-id"))
elif status == "probebounced":
sender = self.command_address("help")
for address in self.subscribers.in_group(id):
if self.cp.get("list", "mail-on-forced-unsubscribe") \
== "yes":
self.send_template(sender, sender,
self.owners(),
"bounce-owner-notification",
{
"address": address,
"bounce": self.get_bounce_text(id),
"boundary": self.invent_boundary(),
})
self.bounce_box.remove(
self.subscribers.get(id, "bounce-id"))
self.subscribers.remove(address)
debug("Cleaning woman: removing <%s>." % address)
self.send_template(sender, sender, [address],
"bounce-goodbye", {})
def join_nonbouncing_groups(self, now):
to_be_joined = []
for id in self.subscribers.groups():
status = self.subscribers.get(id, "status")
age1 = now - float(self.subscribers.get(id, "timestamp-bounced"))
age2 = now - float(self.subscribers.get(id, "timestamp-created"))
if status == "ok":
if age1 > self.one_week and age2 > self.one_week:
to_be_joined.append(id)
if to_be_joined:
addrs = []
for id in to_be_joined:
addrs = addrs + self.subscribers.in_group(id)
self.subscribers.add_many(addrs)
for id in to_be_joined:
self.bounce_box.remove(self.subscribers.get(id, "bounce-id"))
self.subscribers.remove_group(id)
def remove_empty_groups(self):
for id in self.subscribers.groups()[:]:
if len(self.subscribers.in_group(id)) == 0:
self.subscribers.remove_group(id)
def cleaning_woman(self, now):
if self.subscribers.lock():
self.handle_bounced_groups(now)
self.join_nonbouncing_groups(now)
self.subscribers.save()
class SubscriberDatabase:
def __init__(self, dirname, name):
self.dict = {}
self.filename = os.path.join(dirname, name)
self.lockname = os.path.join(dirname, "lock")
self.loaded = 0
self.locked = 0
def lock(self):
if os.system("lockfile -l 60 %s" % self.lockname) == 0:
self.locked = 1
self.load()
return self.locked
def unlock(self):
os.remove(self.lockname)
self.locked = 0
def load(self):
if not self.loaded and not self.dict:
f = open(self.filename, "r")
for line in f.xreadlines():
parts = line.split()
self.dict[parts[0]] = {
"status": parts[1],
"timestamp-created": parts[2],
"timestamp-bounced": parts[3],
"bounce-id": parts[4],
"addresses": parts[5:],
}
f.close()
self.loaded = 1
def save(self):
assert self.locked
assert self.loaded
f = open(self.filename + ".new", "w")
for id in self.dict.keys():
f.write("%s " % id)
f.write("%s " % self.dict[id]["status"])
f.write("%s " % self.dict[id]["timestamp-created"])
f.write("%s " % self.dict[id]["timestamp-bounced"])
f.write("%s " % self.dict[id]["bounce-id"])
f.write("%s\n" % string.join(self.dict[id]["addresses"], " "))
f.close()
os.remove(self.filename)
os.rename(self.filename + ".new", self.filename)
self.unlock()
def get(self, id, attribute):
self.load()
if self.dict.has_key(id) and self.dict[id].has_key(attribute):
return self.dict[id][attribute]
return None
def set(self, id, attribute, value):
assert self.locked
self.load()
if self.dict.has_key(id) and self.dict[id].has_key(attribute):
self.dict[id][attribute] = value
def add(self, address):
return self.add_many([address])
def add_many(self, addresses):
assert self.locked
assert self.loaded
for addr in addresses[:]:
if addr.find("@") == -1:
info("Address '%s' does not contain an @, ignoring it." % addr)
addresses.remove(addr)
for id in self.dict.keys():
old_ones = self.dict[id]["addresses"]
for addr in addresses:
for x in old_ones:
if x.lower() == addr.lower():
old_ones.remove(x)
self.dict[id]["addresses"] = old_ones
id = self.new_group()
self.dict[id] = {
"status": "ok",
"timestamp-created": self.timestamp(),
"timestamp-bounced": "0",
"bounce-id": "..notexist..",
"addresses": addresses,
}
return id
def new_group(self):
keys = self.dict.keys()
if keys:
keys = map(lambda x: int(x), keys)
keys.sort()
return "%d" % (keys[-1] + 1)
else:
return "0"
def timestamp(self):
return "%.0f" % time.time()
def get_all(self):
self.load()
list = []
for values in self.dict.values():
list = list + values["addresses"]
return list
def groups(self):
self.load()
return self.dict.keys()
def has_group(self, id):
self.load()
return self.dict.has_key(id)
def in_group(self, id):
self.load()
return self.dict[id]["addresses"]
def remove(self, address):
assert self.locked
self.load()
for id in self.dict.keys():
group = self.dict[id]
for x in group["addresses"][:]:
if x.lower() == address.lower():
group["addresses"].remove(x)
if len(group["addresses"]) == 0:
del self.dict[id]
def remove_group(self, id):
assert self.locked
self.load()
del self.dict[id]
class MessageBox:
def __init__(self, dirname, boxname):
self.boxdir = os.path.join(dirname, boxname)
if not os.path.isdir(self.boxdir):
os.mkdir(self.boxdir, 0700)
def filename(self, id):
return os.path.join(self.boxdir, id)
def add(self, address, message_text):
id = self.make_id(message_text)
filename = self.filename(id)
f = open(filename + ".address", "w")
f.write(address)
f.close()
f = open(filename + ".new", "w")
f.write(message_text)
f.close()
os.rename(filename + ".new", filename)
return id
def make_id(self, message_text):
return md5sum_as_hex(message_text)
# XXX this might be unnecessarily long
def remove(self, id):
filename = self.filename(id)
if os.path.isfile(filename):
os.remove(filename)
os.remove(filename + ".address")
def has(self, id):
return os.path.isfile(self.filename(id))
def get_address(self, id):
f = open(self.filename(id) + ".address", "r")
data = f.read()
f.close()
return data.strip()
def get(self, id):
f = open(self.filename(id), "r")
data = f.read()
f.close()
return data
def lockname(self, id):
return self.filename(id) + ".lock"
def lock(self, id):
if os.system("lockfile -l 600 %s" % self.lockname(id)) == 0:
return 1
else:
return 0
def unlock(self, id):
try:
os.remove(self.lockname(id))
except os.error:
pass
class DevNull:
def write(self, str):
pass
log_file_handle = None
def log_file():
global log_file_handle
if log_file_handle is None:
try:
log_file_handle = open(os.path.join(DOTDIR, "logfile.txt"), "a")
except:
log_file_handle = DevNull()
return log_file_handle
def timestamp():
tuple = time.localtime(time.time())
return time.strftime("%Y-%m-%d %H:%M:%S", tuple) + " [%d]" % os.getpid()
quiet = 0
# No logging to stderr of debug messages. Some MTAs have a limit on how
# much data they accept via stderr and debug logs will fill that quickly.
def debug(msg):
log_file().write(timestamp() + " " + msg + "\n")
# Log to log file first, in case MTA's stderr buffer fills up and we lose
# logs.
def info(msg):
log_file().write(timestamp() + " " + msg + "\n")
sys.stderr.write(msg + "\n")
def error(msg):
info(msg)
sys.exit(1)
def usage():
sys.stdout.write("""\
Usage: enemies-of-carlotta [options] command
Mailing list manager.
Options:
--name=listname@domain
--owner=address@domain
--moderator=address@domain
--subscription=free/moderated
--posting=free/moderated/auto
--archived=yes/no
--ignore-bounce=yes/no
--language=language code or empty
--mail-on-forced-unsubscribe=yes/no
--mail-on-subscription-changes=yes/no
--skip-prefix=string
--domain=domain.name
--smtp-server=domain.name
--quiet
--moderate
Commands:
--help
--create
--subscribe
--unsubscribe
--list
--is-list
--edit
--incoming
--cleaning-woman
--show-lists
For more detailed information, please read the enemies-of-carlotta(1)
manual page.
""")
sys.exit(0)
def no_act_send_mail(sender, recipients, text):
print "NOT SENDING MAIL FOR REAL!"
print "Sender:", sender
print "Recipients:", recipients
print "Mail:"
print "\n".join(map(lambda s: " " + s, text.split("\n")))
def set_list_options(list, owners, moderators, subscription, posting,
archived, language, ignore_bounce,
mail_on_sub_changes, mail_on_forced_unsub):
if owners:
list.cp.set("list", "owners", string.join(owners, " "))
if moderators:
list.cp.set("list", "moderators", string.join(moderators, " "))
if subscription != None:
list.cp.set("list", "subscription", subscription)
if posting != None:
list.cp.set("list", "posting", posting)
if archived != None:
list.cp.set("list", "archived", archived)
if language != None:
list.cp.set("list", "language", language)
if ignore_bounce != None:
list.cp.set("list", "ignore-bounce", ignore_bounce)
if mail_on_sub_changes != None:
list.cp.set("list", "mail-on-subscription-changes",
mail_on_sub_changes)
if mail_on_forced_unsub != None:
list.cp.set("list", "mail-on-forced-unsubscribe",
mail_on_forced_unsub)
def main(args):
try:
opts, args = getopt.getopt(args, "h",
["name=",
"owner=",
"moderator=",
"subscription=",
"posting=",
"archived=",
"language=",
"ignore-bounce=",
"mail-on-forced-unsubscribe=",
"mail-on-subscription-changes=",
"skip-prefix=",
"domain=",
"sendmail=",
"smtp-server=",
"qmqp-server=",
"quiet",
"moderate",
"post",
"sender=",
"recipient=",
"no-act",
"set",
"get",
"help",
"create",
"destroy",
"subscribe",
"unsubscribe",
"list",
"is-list",
"edit",
"incoming",
"cleaning-woman",
"show-lists",
"version",
])
except getopt.GetoptError, detail:
error("Error parsing command line options (see --help):\n%s" %
detail)
operation = None
list_name = None
owners = []
moderators = []
subscription = None
posting = None
archived = None
ignore_bounce = None
skip_prefix = None
domain = None
sendmail = "/usr/sbin/sendmail"
smtp_server = None
qmqp_server = None
moderate = 0
post = 0
sender = None
recipient = None
language = None
mail_on_forced_unsub = None
mail_on_sub_changes = None
no_act = 0
global quiet
for opt, arg in opts:
if opt == "--name":
list_name = arg
elif opt == "--owner":
owners.append(arg)
elif opt == "--moderator":
moderators.append(arg)
elif opt == "--subscription":
subscription = arg
elif opt == "--posting":
posting = arg
elif opt == "--archived":
archived = arg
elif opt == "--ignore-bounce":
ignore_bounce = arg
elif opt == "--skip-prefix":
skip_prefix = arg
elif opt == "--domain":
domain = arg
elif opt == "--sendmail":
sendmail = arg
elif opt == "--smtp-server":
smtp_server = arg
elif opt == "--qmqp-server":
qmqp_server = arg
elif opt == "--sender":
sender = arg
elif opt == "--recipient":
recipient = arg
elif opt == "--language":
language = arg
elif opt == "--mail-on-forced-unsubscribe":
mail_on_forced_unsub = arg
elif opt == "--mail-on-subscription-changes":
mail_on_sub_changes = arg
elif opt == "--moderate":
moderate = 1
elif opt == "--post":
post = 1
elif opt == "--quiet":
quiet = 1
elif opt == "--no-act":
no_act = 1
else:
operation = opt
if operation is None:
error("No operation specified, see --help.")
if list_name is None and operation not in ["--incoming", "--help", "-h",
"--cleaning-woman",
"--show-lists",
"--version"]:
error("%s requires a list name specified with --name" % operation)
if operation in ["--help", "-h"]:
usage()
if sender or recipient:
environ = os.environ.copy()
if sender:
environ["SENDER"] = sender
if recipient:
environ["RECIPIENT"] = recipient
set_environ(environ)
mlm = MailingListManager(DOTDIR, sendmail=sendmail,
smtp_server=smtp_server,
qmqp_server=qmqp_server)
if no_act:
mlm.send_mail = no_act_send_mail
if operation == "--create":
if not owners:
error("You must give at least one list owner with --owner.")
list = mlm.create_list(list_name)
set_list_options(list, owners, moderators, subscription, posting,
archived, language, ignore_bounce,
mail_on_sub_changes, mail_on_forced_unsub)
list.save_config()
debug("Created list %s." % list_name)
elif operation == "--destroy":
shutil.rmtree(os.path.join(DOTDIR, list_name))
debug("Removed list %s." % list_name)
elif operation == "--edit":
list = mlm.open_list(list_name)
set_list_options(list, owners, moderators, subscription, posting,
archived, language, ignore_bounce,
mail_on_sub_changes, mail_on_forced_unsub)
list.save_config()
elif operation == "--subscribe":
list = mlm.open_list(list_name)
list.subscribers.lock()
for address in args:
if address.find("@") == -1:
error("Address '%s' does not contain an @." % address)
list.subscribers.add(address)
debug("Added subscriber <%s>." % address)
list.subscribers.save()
elif operation == "--unsubscribe":
list = mlm.open_list(list_name)
list.subscribers.lock()
for address in args:
list.subscribers.remove(address)
debug("Removed subscriber <%s>." % address)
list.subscribers.save()
elif operation == "--list":
list = mlm.open_list(list_name)
for address in list.subscribers.get_all():
print address
elif operation == "--is-list":
if mlm.is_list(list_name, skip_prefix, domain):
debug("Indeed a mailing list: <%s>" % list_name)
else:
debug("Not a mailing list: <%s>" % list_name)
sys.exit(1)
elif operation == "--incoming":
try:
mlm.incoming_message(skip_prefix, domain, moderate, post)
except BadCommandAddress:
sys.stderr.write("Bad command address.\n")
sys.exit(os.EX_NOUSER)
except BadSignature:
sys.stderr.write("Bad signature.\n")
sys.exit(os.EX_NOPERM)
except UnknownList:
sys.stderr.write("Unknown list\n")
sys.exit(os.EX_NOUSER)
elif operation == "--cleaning-woman":
mlm.cleaning_woman()
elif operation == "--show-lists":
listnames = mlm.get_lists()
listnames.sort()
for listname in listnames:
print listname
elif operation == "--get":
list = mlm.open_list(list_name)
for name in args:
print list.cp.get("list", name)
elif operation == "--set":
list = mlm.open_list(list_name)
for arg in args:
if "=" not in arg:
error("Error: --set arguments must be of form name=value")
name, value = arg.split("=", 1)
list.cp.set("list", name, value)
list.save_config()
elif operation == "--version":
print "EoC, version %s" % VERSION
print "Home page: http://liw.iki.fi/liw/eoc/"
else:
error("Internal error: unimplemented option <%s>." % operation)
if __name__ == "__main__":
try:
main(sys.argv[1:])
except EocException, detail:
error("Error: %s" % detail)
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