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Author SHA1 Message Date
link2xt
73859ebc11 Do not use redirect on /cgi-bin/newemail.py
Delta Chat does not follow redirects,
so it breaks old QR codes printed on paper
and published on various web pages.
2024-01-21 13:07:07 +00:00
52 changed files with 360 additions and 1552 deletions

View File

@@ -4,17 +4,12 @@ on:
push:
branches:
- main
pull_request:
paths-ignore:
- 'scripts/**'
- staging-ci
jobs:
deploy:
name: deploy on staging.testrun.org, and run tests
runs-on: ubuntu-latest
concurrency:
group: staging-deploy
cancel-in-progress: true
steps:
- uses: actions/checkout@v3
@@ -24,57 +19,48 @@ jobs:
echo "${{ secrets.STAGING_SSH_KEY }}" >> ~/.ssh/id_ed25519
chmod 600 ~/.ssh/id_ed25519
ssh-keyscan staging.testrun.org > ~/.ssh/known_hosts
# save previous acme & dkim state
rsync -avz root@staging.testrun.org:/var/lib/acme . || true
rsync -avz root@staging.testrun.org:/etc/dkimkeys . || true
# store previous acme & dkim state on ns.testrun.org, if it contains useful certs
if [ -f dkimkeys/opendkim.private ]; then rsync -avz -e "ssh -o StrictHostKeyChecking=accept-new" dkimkeys root@ns.testrun.org:/tmp/ || true; fi
if [ -z "$(ls -A acme/certs)" ]; then rsync -avz -e "ssh -o StrictHostKeyChecking=accept-new" acme root@ns.testrun.org:/tmp/ || true; fi
# rsync -avz root@staging.testrun.org:/var/lib/acme . || true
# rsync -avz root@staging.testrun.org:/var/lib/rspamd/dkim . || true
- name: rebuild staging.testrun.org to have a clean VPS
run: |
curl -X POST \
-H "Authorization: Bearer ${{ secrets.HETZNER_API_TOKEN }}" \
-H "Content-Type: application/json" \
-d '{"image":"debian-12"}' \
"https://api.hetzner.cloud/v1/servers/${{ secrets.STAGING_SERVER_ID }}/actions/rebuild"
#- name: rebuild staging.testrun.org to have a clean VPS
# run: |
# curl -X POST \
# -H "Authorization: Bearer ${{ secrets.HETZNER_API_TOKEN }}" \
# -H "Content-Type: application/json" \
# -d '{"image":"debian-12"}' \
# "https://api.hetzner.cloud/v1/servers/${{ secrets.STAGING_SERVER_ID }}/actions/rebuild"
- run: scripts/initenv.sh
- name: append venv/bin to PATH
run: echo venv/bin >>$GITHUB_PATH
- name: upload TLS cert after rebuilding
run: |
echo " --- wait until staging.testrun.org VPS is rebuilt --- "
rm ~/.ssh/known_hosts
while ! ssh -o ConnectTimeout=180 -o StrictHostKeyChecking=accept-new -v root@staging.testrun.org id -u ; do sleep 1 ; done
ssh -o StrictHostKeyChecking=accept-new -v root@staging.testrun.org id -u
# download acme & dkim state from ns.testrun.org
rsync -e "ssh -o StrictHostKeyChecking=accept-new" -avz root@ns.testrun.org:/tmp/acme acme-restore || true
rsync -avz root@ns.testrun.org:/tmp/dkimkeys dkimkeys-restore || true
# restore acme & dkim state to staging.testrun.org
rsync -avz acme-restore/acme/ root@staging.testrun.org:/var/lib/acme || true
rsync -avz dkimkeys-restore/dkimkeys/ root@staging.testrun.org:/etc/dkimkeys || true
ssh -o StrictHostKeyChecking=accept-new -v root@staging.testrun.org chown root:root -R /var/lib/acme || true
- name: run formatting checks
run: cmdeploy fmt -v
- name: run deploy-chatmail offline tests
run: pytest --pyargs cmdeploy
#- name: upload TLS cert after rebuilding
# run: |
# echo " --- wait until staging.testrun.org VPS is rebuilt --- "
# rm ~/.ssh/known_hosts
# while ! ssh -o ConnectTimeout=180 -o StrictHostKeyChecking=accept-new -v root@staging.testrun.org id -u ; do sleep 1 ; done
# ssh -o StrictHostKeyChecking=accept-new -v root@staging.testrun.org id -u
# rsync -avz acme root@staging.testrun.org:/var/lib/ || true
# rsync -avz dkim root@staging.testrun.org:/var/lib/rspamd/ || true
- run: cmdeploy init staging.testrun.org
- run: cmdeploy run
- name: set DNS entries
run: |
ssh -o StrictHostKeyChecking=accept-new -v root@staging.testrun.org chown opendkim:opendkim -R /etc/dkimkeys
#ssh -o StrictHostKeyChecking=accept-new -v root@staging.testrun.org chown _rspamd:_rspamd -R /var/lib/rspamd/dkim
cmdeploy dns --zonefile staging-generated.zone
cat staging-generated.zone >> .github/workflows/staging.testrun.org-default.zone
cat .github/workflows/staging.testrun.org-default.zone
scp .github/workflows/staging.testrun.org-default.zone root@ns.testrun.org:/etc/nsd/staging.testrun.org.zone
scp -o StrictHostKeyChecking=accept-new .github/workflows/staging.testrun.org-default.zone root@ns.testrun.org:/etc/nsd/staging.testrun.org.zone
ssh root@ns.testrun.org nsd-checkzone staging.testrun.org /etc/nsd/staging.testrun.org.zone
ssh root@ns.testrun.org systemctl reload nsd

View File

@@ -1,61 +0,0 @@
# Changelog for chatmail deployment
## untagged
- Accept Let's Encrypt's new Terms of Services
([#275](https://github.com/deltachat/chatmail/pull/276))
- Reload Dovecot and Postfix when TLS certificate updates
([#271](https://github.com/deltachat/chatmail/pull/271))
- Use forked version of dovecot without hardcoded delays
([#270](https://github.com/deltachat/chatmail/pull/270))
## 1.2.0 - 2024-04-04
- Install dig on the server to resolve DNS records
([#267](https://github.com/deltachat/chatmail/pull/267))
- preserve notification order and exponentially backoff with
retries for tokens where we didn't get a successful return
([#265](https://github.com/deltachat/chatmail/pull/263))
- Run chatmail-metadata and doveauth as vmail
([#261](https://github.com/deltachat/chatmail/pull/261))
- Apply systemd restrictions to echobot
([#259](https://github.com/deltachat/chatmail/pull/259))
- re-enable running the CI in pull requests, but not concurrently
([#258](https://github.com/deltachat/chatmail/pull/258))
## 1.1.0 - 2024-03-28
### The changelog starts to record changes from March 15th, 2024
- Move systemd unit templates to cmdeploy package
([#255](https://github.com/deltachat/chatmail/pull/255))
- Persist push tokens and support multiple device per address
([#254](https://github.com/deltachat/chatmail/pull/254))
- Avoid warning for regular doveauth protocol's hello message.
([#250](https://github.com/deltachat/chatmail/pull/250))
- Fix various tests to pass again with "cmdeploy test".
([#245](https://github.com/deltachat/chatmail/pull/245),
[#242](https://github.com/deltachat/chatmail/pull/242)
- Ensure lets-encrypt certificates are reloaded after renewal
([#244]) https://github.com/deltachat/chatmail/pull/244
- Persist tokens to avoid iOS users loosing push-notifications when the
chatmail metadata service is restarted (happens regularly during deploys)
([#238](https://github.com/deltachat/chatmail/pull/239)
- Fix failing sieve-script compile errors on incoming messages
([#237](https://github.com/deltachat/chatmail/pull/239)
- Fix quota reporting after expunging of old mails
([#233](https://github.com/deltachat/chatmail/pull/239)

View File

@@ -159,27 +159,4 @@ While this file is present, account creation will be blocked.
Delta Chat apps will, however, discover all ports and configurations
automatically by reading the [autoconfig XML file](https://www.ietf.org/archive/id/draft-bucksch-autoconfig-00.html) from the chatmail service.
## Email authentication
chatmail servers rely on [DKIM](https://www.rfc-editor.org/rfc/rfc6376)
to authenticate incoming emails.
Incoming emails must have a valid DKIM signature with
Signing Domain Identifier (SDID, `d=` parameter in the DKIM-Signature header)
equal to the `From:` header domain.
This property is checked by OpenDKIM screen policy script
before validating the signatures.
This correpsonds to strict [DMARC](https://www.rfc-editor.org/rfc/rfc7489) alignment (`adkim=s`),
but chatmail does not rely on DMARC and does not consult the sender policy published in DMARC records.
Other legacy authentication mechanisms such as [iprev](https://www.rfc-editor.org/rfc/rfc8601#section-2.7.3)
and [SPF](https://www.rfc-editor.org/rfc/rfc7208) are also not taken into account.
If there is no valid DKIM signature on the incoming email,
the sender receives a "5.7.1 No valid DKIM signature found" error.
Outgoing emails must be sent over authenticated connection
with envelope MAIL FROM (return path) corresponding to the login.
This is ensured by Postfix which maps login username
to MAIL FROM with
[`smtpd_sender_login_maps`](https://www.postfix.org/postconf.5.html#smtpd_sender_login_maps)
and rejects incorrectly authenticated emails with [`reject_sender_login_mismatch`](reject_sender_login_mismatch) policy.
`From:` header must correspond to envelope MAIL FROM,
this is ensured by `filtermail` proxy.

View File

@@ -1,3 +1,4 @@
include src/chatmaild/*.f
include src/chatmaild/ini/*.ini.f
include src/chatmaild/ini/*.ini
include src/chatmaild/tests/mail-data/*

View File

@@ -10,8 +10,6 @@ dependencies = [
"iniconfig",
"deltachat-rpc-server",
"deltachat-rpc-client",
"filelock",
"requests",
]
[tool.setuptools]
@@ -22,7 +20,6 @@ where = ['src']
[project.scripts]
doveauth = "chatmaild.doveauth:main"
chatmail-metadata = "chatmaild.metadata:main"
filtermail = "chatmaild.filtermail:main"
echobot = "chatmaild.echo:main"
chatmail-metrics = "chatmaild.metrics:main"

View File

@@ -4,12 +4,12 @@ import time
import sys
import json
import crypt
from pathlib import Path
from socketserver import (
UnixStreamServer,
StreamRequestHandler,
ThreadingMixIn,
)
import pwd
from .database import Database
from .config import read_config, Config
@@ -17,10 +17,6 @@ from .config import read_config, Config
NOCREATE_FILE = "/etc/chatmail-nocreate"
class UnknownCommand(ValueError):
"""dictproxy handler received an unkown command"""
def encrypt_password(password: str):
# https://doc.dovecot.org/configuration_manual/authentication/password_schemes/
passhash = crypt.crypt(password, crypt.METHOD_SHA512)
@@ -46,61 +42,36 @@ def is_allowed_to_create(config: Config, user, cleartext_password) -> bool:
return False
localpart, domain = parts
if localpart == "echo":
# echobot account should not be created in the database
return False
if (
len(localpart) > config.username_max_length
or len(localpart) < config.username_min_length
):
logging.warning(
"localpart %s has to be between %s and %s chars long",
localpart,
config.username_min_length,
config.username_max_length,
)
if localpart != "echo":
logging.warning(
"localpart %s has to be between %s and %s chars long",
localpart,
config.username_min_length,
config.username_max_length,
)
return False
return True
def get_user_data(db, config: Config, user):
if user == f"echo@{config.mail_domain}":
return dict(
home=f"/home/vmail/mail/{config.mail_domain}/echo@{config.mail_domain}",
uid="vmail",
gid="vmail",
)
def get_user_data(db, user):
with db.read_connection() as conn:
result = conn.get_user(user)
if result:
result["home"] = f"/home/vmail/mail/{config.mail_domain}/{user}"
result["uid"] = "vmail"
result["gid"] = "vmail"
return result
def lookup_userdb(db, config: Config, user):
return get_user_data(db, config, user)
def lookup_userdb(db, user):
return get_user_data(db, user)
def lookup_passdb(db, config: Config, user, cleartext_password):
if user == f"echo@{config.mail_domain}":
# Echobot writes password it wants to log in with into /run/echobot/password
try:
password = Path("/run/echobot/password").read_text()
except Exception:
logging.exception("Exception when trying to read /run/echobot/password")
return None
return dict(
home=f"/home/vmail/mail/{config.mail_domain}/echo@{config.mail_domain}",
uid="vmail",
gid="vmail",
password=encrypt_password(password),
)
with db.write_transaction() as conn:
userdata = conn.get_user(user)
if userdata:
@@ -109,7 +80,6 @@ def lookup_passdb(db, config: Config, user, cleartext_password):
"UPDATE users SET last_login=? WHERE addr=?", (int(time.time()), user)
)
userdata["home"] = f"/home/vmail/mail/{config.mail_domain}/{user}"
userdata["uid"] = "vmail"
userdata["gid"] = "vmail"
return userdata
@@ -155,12 +125,8 @@ def split_and_unescape(s):
def handle_dovecot_request(msg, db, config: Config):
# see https://doc.dovecot.org/3.0/developer_manual/design/dict_protocol/
short_command = msg[0]
if short_command == "H": # HELLO
# we don't do any checking on versions and just return
return
elif short_command == "L": # LOOKUP
if short_command == "L": # LOOKUP
parts = msg[1:].split("\t")
# Dovecot <2.3.17 has only one part,
@@ -176,7 +142,7 @@ def handle_dovecot_request(msg, db, config: Config):
if type == "userdb":
user = args[0]
if user.endswith(f"@{config.mail_domain}"):
res = lookup_userdb(db, config, user)
res = lookup_userdb(db, user)
if res:
reply_command = "O"
else:
@@ -191,22 +157,7 @@ def handle_dovecot_request(msg, db, config: Config):
reply_command = "N"
json_res = json.dumps(res) if res else ""
return f"{reply_command}{json_res}\n"
raise UnknownCommand(msg)
def handle_dovecot_protocol(rfile, wfile, db: Database, config: Config):
while True:
msg = rfile.readline().strip().decode()
if not msg:
break
try:
res = handle_dovecot_request(msg, db, config)
except UnknownCommand:
logging.warning("unknown command: %r", msg)
else:
if res:
wfile.write(res.encode("ascii"))
wfile.flush()
return None
class ThreadedUnixStreamServer(ThreadingMixIn, UnixStreamServer):
@@ -215,13 +166,23 @@ class ThreadedUnixStreamServer(ThreadingMixIn, UnixStreamServer):
def main():
socket = sys.argv[1]
db = Database(sys.argv[2])
config = read_config(sys.argv[3])
passwd_entry = pwd.getpwnam(sys.argv[2])
db = Database(sys.argv[3])
config = read_config(sys.argv[4])
class Handler(StreamRequestHandler):
def handle(self):
try:
handle_dovecot_protocol(self.rfile, self.wfile, db, config)
while True:
msg = self.rfile.readline().strip().decode()
if not msg:
break
res = handle_dovecot_request(msg, db, config)
if res:
self.wfile.write(res.encode("ascii"))
self.wfile.flush()
else:
logging.warn("request had no answer: %r", msg)
except Exception:
logging.exception("Exception in the handler")
raise
@@ -232,6 +193,7 @@ def main():
pass
with ThreadedUnixStreamServer(socket, Handler) as server:
os.chown(socket, uid=passwd_entry.pw_uid, gid=passwd_entry.pw_gid)
try:
server.serve_forever()
except KeyboardInterrupt:

View File

@@ -2,11 +2,9 @@
Description=Chatmail dict authentication proxy for dovecot
[Service]
ExecStart={execpath} /run/doveauth/doveauth.socket /home/vmail/passdb.sqlite {config_path}
ExecStart={execpath} /run/dovecot/doveauth.socket vmail /home/vmail/passdb.sqlite {config_path}
Restart=always
RestartSec=30
User=vmail
RuntimeDirectory=doveauth
[Install]
WantedBy=multi-user.target

View File

@@ -3,17 +3,14 @@
it will echo back any message that has non-empty text and also supports the /help command.
"""
import logging
import os
import sys
import subprocess
from deltachat_rpc_client import Bot, DeltaChat, EventType, Rpc, events
from pathlib import Path
from chatmaild.config import read_config
from chatmaild.newemail import create_newemail_dict
from chatmaild.config import read_config
hooks = events.HookCollection()
@@ -21,14 +18,14 @@ hooks = events.HookCollection()
@hooks.on(events.RawEvent)
def log_event(event):
if event.kind == EventType.INFO:
logging.info("%s", event.msg)
logging.info(event.msg)
elif event.kind == EventType.WARNING:
logging.warning("%s", event.msg)
logging.warning(event.msg)
@hooks.on(events.RawEvent(EventType.ERROR))
def log_error(event):
logging.error("%s", event.msg)
logging.error(event.msg)
@hooks.on(events.MemberListChanged)
@@ -51,9 +48,6 @@ def on_group_name_changed(event):
@hooks.on(events.NewMessage(func=lambda e: not e.command))
def echo(event):
snapshot = event.message_snapshot
if snapshot.is_info:
# Ignore info messages
return
if snapshot.text or snapshot.file:
snapshot.chat.send_message(text=snapshot.text, file=snapshot.file)
@@ -65,7 +59,6 @@ def help_command(event):
def main():
logging.basicConfig(level=logging.INFO)
path = os.environ.get("PATH")
venv_path = sys.argv[0].strip("echobot")
os.environ["PATH"] = path + ":" + venv_path
@@ -78,27 +71,14 @@ def main():
account = accounts[0] if accounts else deltachat.add_account()
bot = Bot(account, hooks)
config = read_config(sys.argv[1])
# Create password file
if bot.is_configured():
password = bot.account.get_config("mail_pw")
else:
password = create_newemail_dict(config)["password"]
Path("/run/echobot/password").write_text(password)
# Give the user which doveauth runs as access to the password file.
subprocess.run(
["/usr/bin/setfacl", "-m", "user:vmail:r", "/run/echobot/password"],
check=True,
)
if not bot.is_configured():
config = read_config(sys.argv[1])
password = create_newemail_dict(config).get("password")
email = "echo@" + config.mail_domain
bot.configure(email, password)
bot.run_forever()
if __name__ == "__main__":
logging.basicConfig(level=logging.INFO)
main()

View File

@@ -0,0 +1,11 @@
[Unit]
Description=Chatmail echo bot for testing it works
[Service]
ExecStart={execpath} {config_path}
Environment="PATH={remote_venv_dir}:$PATH"
Restart=always
RestartSec=30
[Install]
WantedBy=multi-user.target

View File

@@ -1,35 +0,0 @@
import os
import logging
import json
import filelock
from contextlib import contextmanager
class FileDict:
"""Concurrency-safe multi-reader/single-writer persistent dict."""
def __init__(self, path):
self.path = path
self.lock_path = path.with_name(path.name + ".lock")
@contextmanager
def modify(self):
# the OS will release the lock if the process dies,
# and the contextmanager will otherwise guarantee release
with filelock.FileLock(self.lock_path):
data = self.read()
yield data
write_path = self.path.with_name(self.path.name + ".tmp")
with write_path.open("w") as f:
json.dump(data, f)
os.rename(write_path, self.path)
def read(self):
try:
with self.path.open("r") as f:
return json.load(f)
except FileNotFoundError:
return {}
except Exception:
logging.warning("corrupt serialization state at: %r", self.path)
return {}

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@@ -1,5 +1,5 @@
[Unit]
Description=Chatmail Postfix before queue filter
Description=Chatmail Postfix BeforeQeue filter
[Service]
ExecStart={execpath} {config_path}

View File

@@ -33,7 +33,7 @@ password_min_length = 9
passthrough_senders =
# list of e-mail recipients for which to accept outbound un-encrypted mails
passthrough_recipients = xstore@testrun.org groupsbot@hispanilandia.net
passthrough_recipients =
#
# Deployment Details

View File

@@ -1,7 +1,7 @@
[privacy]
passthrough_recipients = privacy@testrun.org xstore@testrun.org groupsbot@hispanilandia.net
passthrough_recipients = privacy@testrun.org
privacy_postal =
Merlinux GmbH, Represented by the managing director H. Krekel,

View File

@@ -1,153 +0,0 @@
from pathlib import Path
from socketserver import (
UnixStreamServer,
StreamRequestHandler,
ThreadingMixIn,
)
import sys
import logging
import os
from .filedict import FileDict
from .notifier import Notifier
DICTPROXY_HELLO_CHAR = "H"
DICTPROXY_LOOKUP_CHAR = "L"
DICTPROXY_ITERATE_CHAR = "I"
DICTPROXY_BEGIN_TRANSACTION_CHAR = "B"
DICTPROXY_SET_CHAR = "S"
DICTPROXY_COMMIT_TRANSACTION_CHAR = "C"
DICTPROXY_TRANSACTION_CHARS = "BSC"
class Metadata:
# each SETMETADATA on this key appends to a list of unique device tokens
# which only ever get removed if the upstream indicates the token is invalid
DEVICETOKEN_KEY = "devicetoken"
def __init__(self, vmail_dir):
self.vmail_dir = vmail_dir
def get_metadata_dict(self, addr):
return FileDict(self.vmail_dir / addr / "metadata.json")
def add_token_to_addr(self, addr, token):
with self.get_metadata_dict(addr).modify() as data:
tokens = data.setdefault(self.DEVICETOKEN_KEY, [])
if token not in tokens:
tokens.append(token)
def remove_token_from_addr(self, addr, token):
with self.get_metadata_dict(addr).modify() as data:
tokens = data.get(self.DEVICETOKEN_KEY, [])
if token in tokens:
tokens.remove(token)
def get_tokens_for_addr(self, addr):
mdict = self.get_metadata_dict(addr).read()
return mdict.get(self.DEVICETOKEN_KEY, [])
def handle_dovecot_protocol(rfile, wfile, notifier, metadata):
transactions = {}
while True:
msg = rfile.readline().strip().decode()
if not msg:
break
res = handle_dovecot_request(msg, transactions, notifier, metadata)
if res:
wfile.write(res.encode("ascii"))
wfile.flush()
def handle_dovecot_request(msg, transactions, notifier, metadata):
# see https://doc.dovecot.org/3.0/developer_manual/design/dict_protocol/
short_command = msg[0]
parts = msg[1:].split("\t")
if short_command == DICTPROXY_LOOKUP_CHAR:
# Lpriv/43f5f508a7ea0366dff30200c15250e3/devicetoken\tlkj123poi@c2.testrun.org
keyparts = parts[0].split("/")
if keyparts[0] == "priv":
keyname = keyparts[2]
addr = parts[1]
if keyname == metadata.DEVICETOKEN_KEY:
res = " ".join(metadata.get_tokens_for_addr(addr))
return f"O{res}\n"
logging.warning("lookup ignored: %r", msg)
return "N\n"
elif short_command == DICTPROXY_ITERATE_CHAR:
# Empty line means ITER_FINISHED.
# If we don't return empty line Dovecot will timeout.
return "\n"
elif short_command == DICTPROXY_HELLO_CHAR:
return # no version checking
if short_command not in (DICTPROXY_TRANSACTION_CHARS):
logging.warning("unknown dictproxy request: %r", msg)
return
transaction_id = parts[0]
if short_command == DICTPROXY_BEGIN_TRANSACTION_CHAR:
addr = parts[1]
transactions[transaction_id] = dict(addr=addr, res="O\n")
elif short_command == DICTPROXY_COMMIT_TRANSACTION_CHAR:
# each set devicetoken operation persists directly
# and does not wait until a "commit" comes
# because our dovecot config does not involve
# multiple set-operations in a single commit
return transactions.pop(transaction_id)["res"]
elif short_command == DICTPROXY_SET_CHAR:
# For documentation on key structure see
# https://github.com/dovecot/core/blob/main/src/lib-storage/mailbox-attribute.h
keyname = parts[1].split("/")
value = parts[2] if len(parts) > 2 else ""
addr = transactions[transaction_id]["addr"]
if keyname[0] == "priv" and keyname[2] == metadata.DEVICETOKEN_KEY:
metadata.add_token_to_addr(addr, value)
elif keyname[0] == "priv" and keyname[2] == "messagenew":
notifier.new_message_for_addr(addr, metadata)
else:
# Transaction failed.
transactions[transaction_id]["res"] = "F\n"
class ThreadedUnixStreamServer(ThreadingMixIn, UnixStreamServer):
request_queue_size = 100
def main():
socket, vmail_dir = sys.argv[1:]
vmail_dir = Path(vmail_dir)
if not vmail_dir.exists():
logging.error("vmail dir does not exist: %r", vmail_dir)
return 1
queue_dir = vmail_dir / "pending_notifications"
queue_dir.mkdir(exist_ok=True)
metadata = Metadata(vmail_dir)
notifier = Notifier(queue_dir)
notifier.start_notification_threads(metadata.remove_token_from_addr)
class Handler(StreamRequestHandler):
def handle(self):
try:
handle_dovecot_protocol(self.rfile, self.wfile, notifier, metadata)
except Exception:
logging.exception("Exception in the dovecot dictproxy handler")
raise
try:
os.unlink(socket)
except FileNotFoundError:
pass
with ThreadedUnixStreamServer(socket, Handler) as server:
try:
server.serve_forever()
except KeyboardInterrupt:
pass

View File

@@ -1,165 +0,0 @@
"""
This modules provides notification machinery for transmitting device tokens to
a central notification server which in turn contacts a phone provider's notification server
to trigger Delta Chat apps to retrieve messages and provide instant notifications to users.
The Notifier class arranges the queuing of tokens in separate PriorityQueues
from which NotifyThreads take and transmit them via HTTPS
to the `notifications.delta.chat` service.
The current lack of proper HTTP/2-support in Python leads us
to use multiple threads and connections to the Rust-implemented `notifications.delta.chat`
which itself uses HTTP/2 and thus only a single connection to phone-notification providers.
If a token fails to cause a successful notification
it is moved to a retry-number specific PriorityQueue
which handles all tokens that failed a particular number of times
and which are scheduled for retry using exponential back-off timing.
If a token notification would be scheduled more than DROP_DEADLINE seconds
after its first attempt, it is dropped with a log error.
Note that tokens are completely opaque to the notification machinery here
and will in the future be encrypted foreclosing all ability to distinguish
which device token ultimately goes to which phone-provider notification service,
or to understand the relation of "device tokens" and chatmail addresses.
The meaning and format of tokens is basically a matter of Delta-Chat Core and
the `notification.delta.chat` service.
"""
import os
import time
import math
import logging
from uuid import uuid4
from threading import Thread
from pathlib import Path
from queue import PriorityQueue
from dataclasses import dataclass
import requests
@dataclass
class PersistentQueueItem:
path: Path
addr: str
start_ts: int
token: str
def delete(self):
self.path.unlink(missing_ok=True)
@classmethod
def create(cls, queue_dir, addr, start_ts, token):
queue_id = uuid4().hex
start_ts = int(start_ts)
path = queue_dir.joinpath(queue_id)
tmp_path = path.with_name(path.name + ".tmp")
tmp_path.write_text(f"{addr}\n{start_ts}\n{token}")
os.rename(tmp_path, path)
return cls(path, addr, start_ts, token)
@classmethod
def read_from_path(cls, path):
addr, start_ts, token = path.read_text().split("\n", maxsplit=2)
return cls(path, addr, int(start_ts), token)
def __lt__(self, other):
return self.start_ts < other.start_ts
class Notifier:
URL = "https://notifications.delta.chat/notify"
CONNECTION_TIMEOUT = 60.0 # seconds until http-request is given up
BASE_DELAY = 8.0 # base seconds for exponential back-off delay
DROP_DEADLINE = 5 * 60 * 60 # drop notifications after 5 hours
def __init__(self, queue_dir):
self.queue_dir = queue_dir
max_tries = int(math.log(self.DROP_DEADLINE, self.BASE_DELAY)) + 1
self.retry_queues = [PriorityQueue() for _ in range(max_tries)]
def compute_delay(self, retry_num):
return 0 if retry_num == 0 else pow(self.BASE_DELAY, retry_num)
def new_message_for_addr(self, addr, metadata):
start_ts = int(time.time())
for token in metadata.get_tokens_for_addr(addr):
queue_item = PersistentQueueItem.create(
self.queue_dir, addr, start_ts, token
)
self.queue_for_retry(queue_item)
def requeue_persistent_queue_items(self):
for queue_path in self.queue_dir.iterdir():
if queue_path.name.endswith(".tmp"):
logging.warning("removing spurious queue item: %r", queue_path)
queue_path.unlink()
continue
queue_item = PersistentQueueItem.read_from_path(queue_path)
self.queue_for_retry(queue_item)
def queue_for_retry(self, queue_item, retry_num=0):
delay = self.compute_delay(retry_num)
when = int(time.time()) + delay
deadline = queue_item.start_ts + self.DROP_DEADLINE
if retry_num >= len(self.retry_queues) or when > deadline:
queue_item.delete()
logging.error("notification exceeded deadline: %r", queue_item.token)
return
self.retry_queues[retry_num].put((when, queue_item))
def start_notification_threads(self, remove_token_from_addr):
self.requeue_persistent_queue_items()
threads = {}
for retry_num in range(len(self.retry_queues)):
# use 4 threads for first-try tokens and less for subsequent tries
num_threads = 4 if retry_num == 0 else 2
threads[retry_num] = []
for _ in range(num_threads):
thread = NotifyThread(self, retry_num, remove_token_from_addr)
threads[retry_num].append(thread)
thread.start()
return threads
class NotifyThread(Thread):
def __init__(self, notifier, retry_num, remove_token_from_addr):
super().__init__(daemon=True)
self.notifier = notifier
self.retry_num = retry_num
self.remove_token_from_addr = remove_token_from_addr
def stop(self):
self.notifier.retry_queues[self.retry_num].put((None, None))
def run(self):
requests_session = requests.Session()
while self.retry_one(requests_session):
pass
def retry_one(self, requests_session, sleep=time.sleep):
when, queue_item = self.notifier.retry_queues[self.retry_num].get()
if when is None:
return False
wait_time = when - int(time.time())
if wait_time > 0:
sleep(wait_time)
self.perform_request_to_notification_server(requests_session, queue_item)
return True
def perform_request_to_notification_server(self, requests_session, queue_item):
timeout = self.notifier.CONNECTION_TIMEOUT
token = queue_item.token
try:
res = requests_session.post(self.notifier.URL, data=token, timeout=timeout)
except requests.exceptions.RequestException as e:
res = e
else:
if res.status_code in (200, 410):
if res.status_code == 410:
self.remove_token_from_addr(queue_item.addr, token)
queue_item.delete()
return
logging.warning("Notification request failed: %r", res)
self.notifier.queue_for_retry(queue_item, retry_num=self.retry_num + 1)

View File

@@ -1,6 +1,4 @@
import random
from pathlib import Path
import os
import importlib.resources
import itertools
from email.parser import BytesParser
@@ -59,12 +57,7 @@ def db(tmpdir):
@pytest.fixture
def maildata(request):
try:
datadir = importlib.resources.files(__package__).joinpath("mail-data")
except TypeError:
# in python3.9 or lower, the above doesn't work, so we get datadir this way:
datadir = Path(os.getcwd()).joinpath("chatmaild/src/chatmaild/tests/mail-data")
datadir = importlib.resources.files(__package__).joinpath("mail-data")
assert datadir.exists(), datadir
def maildata(name, from_addr, to_addr):

View File

@@ -28,5 +28,5 @@ def test_read_config_testrun(make_config):
assert config.username_min_length == 9
assert config.username_max_length == 9
assert config.password_min_length == 9
assert "privacy@testrun.org" in config.passthrough_recipients
assert config.passthrough_recipients == ["privacy@testrun.org"]
assert config.passthrough_senders == []

View File

@@ -1,23 +1,17 @@
import io
import json
import pytest
import queue
import threading
import queue
import traceback
import chatmaild.doveauth
from chatmaild.doveauth import (
get_user_data,
lookup_passdb,
handle_dovecot_request,
handle_dovecot_protocol,
)
from chatmaild.doveauth import get_user_data, lookup_passdb, handle_dovecot_request
from chatmaild.database import DBError
def test_basic(db, example_config):
lookup_passdb(db, example_config, "asdf12345@chat.example.org", "q9mr3faue")
data = get_user_data(db, example_config, "asdf12345@chat.example.org")
data = get_user_data(db, "asdf12345@chat.example.org")
assert data
data2 = lookup_passdb(
db, example_config, "asdf12345@chat.example.org", "q9mr3jewvadsfaue"
@@ -43,7 +37,7 @@ def test_nocreate_file(db, monkeypatch, tmpdir, example_config):
lookup_passdb(
db, example_config, "newuser12@chat.example.org", "zequ0Aimuchoodaechik"
)
assert not get_user_data(db, example_config, "newuser12@chat.example.org")
assert not get_user_data(db, "newuser12@chat.example.org")
def test_db_version(db):
@@ -75,23 +69,6 @@ def test_handle_dovecot_request(db, example_config):
assert userdata["password"].startswith("{SHA512-CRYPT}")
def test_handle_dovecot_protocol_hello_is_skipped(db, example_config, caplog):
rfile = io.BytesIO(b"H3\t2\t0\t\tauth\n")
wfile = io.BytesIO()
handle_dovecot_protocol(rfile, wfile, db, example_config)
assert wfile.getvalue() == b""
assert not caplog.messages
def test_handle_dovecot_protocol(db, example_config):
rfile = io.BytesIO(
b"H3\t2\t0\t\tauth\nLshared/userdb/foobar@chat.example.org\tfoobar@chat.example.org\n"
)
wfile = io.BytesIO()
handle_dovecot_protocol(rfile, wfile, db, example_config)
assert wfile.getvalue() == b"N\n"
def test_50_concurrent_lookups_different_accounts(db, gencreds, example_config):
num_threads = 50
req_per_thread = 5

View File

@@ -1,19 +0,0 @@
from chatmaild.filedict import FileDict
def test_basic(tmp_path):
fdict = FileDict(tmp_path.joinpath("metadata"))
assert fdict.read() == {}
with fdict.modify() as d:
d["devicetoken"] = [1, 2, 3]
d["456"] = 4.2
new = fdict.read()
assert new["devicetoken"] == [1, 2, 3]
assert new["456"] == 4.2
def test_bad_marshal_file(tmp_path, caplog):
fdict1 = FileDict(tmp_path.joinpath("metadata"))
fdict1.path.write_bytes(b"l12k3l12k3l")
assert fdict1.read() == {}
assert "corrupt" in caplog.records[0].msg

View File

@@ -1,298 +0,0 @@
import io
import pytest
import requests
import time
from chatmaild.metadata import (
handle_dovecot_request,
handle_dovecot_protocol,
Metadata,
)
from chatmaild.notifier import (
Notifier,
NotifyThread,
PersistentQueueItem,
)
@pytest.fixture
def notifier(metadata):
queue_dir = metadata.vmail_dir.joinpath("pending_notifications")
queue_dir.mkdir()
return Notifier(queue_dir)
@pytest.fixture
def metadata(tmp_path):
vmail_dir = tmp_path.joinpath("vmaildir")
vmail_dir.mkdir()
return Metadata(vmail_dir)
@pytest.fixture
def testaddr():
return "user.name@example.org"
@pytest.fixture
def testaddr2():
return "user2@example.org"
@pytest.fixture
def token():
return "01234"
def get_mocked_requests(statuslist):
class ReqMock:
requests = []
def post(self, url, data, timeout):
self.requests.append((url, data, timeout))
res = statuslist.pop(0)
if isinstance(res, Exception):
raise res
class Result:
status_code = res
return Result()
return ReqMock()
def test_metadata_persistence(tmp_path, testaddr, testaddr2):
metadata1 = Metadata(tmp_path)
metadata2 = Metadata(tmp_path)
assert not metadata1.get_tokens_for_addr(testaddr)
assert not metadata2.get_tokens_for_addr(testaddr)
metadata1.add_token_to_addr(testaddr, "01234")
metadata1.add_token_to_addr(testaddr2, "456")
assert metadata2.get_tokens_for_addr(testaddr) == ["01234"]
assert metadata2.get_tokens_for_addr(testaddr2) == ["456"]
metadata2.remove_token_from_addr(testaddr, "01234")
assert not metadata1.get_tokens_for_addr(testaddr)
assert metadata1.get_tokens_for_addr(testaddr2) == ["456"]
def test_remove_nonexisting(metadata, tmp_path, testaddr):
metadata.add_token_to_addr(testaddr, "123")
metadata.remove_token_from_addr(testaddr, "1l23k1l2k3")
assert metadata.get_tokens_for_addr(testaddr) == ["123"]
def test_notifier_remove_without_set(metadata, testaddr):
metadata.remove_token_from_addr(testaddr, "123")
assert not metadata.get_tokens_for_addr(testaddr)
def test_handle_dovecot_request_lookup_fails(notifier, metadata, testaddr):
res = handle_dovecot_request(
f"Lpriv/123/chatmail\t{testaddr}", {}, notifier, metadata
)
assert res == "N\n"
def test_handle_dovecot_request_happy_path(notifier, metadata, testaddr, token):
transactions = {}
# set device token in a transaction
tx = "1111"
msg = f"B{tx}\t{testaddr}"
res = handle_dovecot_request(msg, transactions, notifier, metadata)
assert not res and not metadata.get_tokens_for_addr(testaddr)
assert transactions == {tx: dict(addr=testaddr, res="O\n")}
msg = f"S{tx}\tpriv/guid00/devicetoken\t{token}"
res = handle_dovecot_request(msg, transactions, notifier, metadata)
assert not res
assert len(transactions) == 1
assert metadata.get_tokens_for_addr(testaddr) == [token]
msg = f"C{tx}"
res = handle_dovecot_request(msg, transactions, notifier, metadata)
assert res == "O\n"
assert len(transactions) == 0
assert metadata.get_tokens_for_addr(testaddr) == [token]
# trigger notification for incoming message
tx2 = "2222"
assert (
handle_dovecot_request(f"B{tx2}\t{testaddr}", transactions, notifier, metadata)
is None
)
msg = f"S{tx2}\tpriv/guid00/messagenew"
assert handle_dovecot_request(msg, transactions, notifier, metadata) is None
queue_item = notifier.retry_queues[0].get()[1]
assert queue_item.token == token
assert handle_dovecot_request(f"C{tx2}", transactions, notifier, metadata) == "O\n"
assert not transactions
assert queue_item.path.exists()
def test_handle_dovecot_protocol_set_devicetoken(metadata, notifier):
rfile = io.BytesIO(
b"\n".join(
[
b"HELLO",
b"Btx00\tuser@example.org",
b"Stx00\tpriv/guid00/devicetoken\t01234",
b"Ctx00",
]
)
)
wfile = io.BytesIO()
handle_dovecot_protocol(rfile, wfile, notifier, metadata)
assert wfile.getvalue() == b"O\n"
assert metadata.get_tokens_for_addr("user@example.org") == ["01234"]
def test_handle_dovecot_protocol_set_get_devicetoken(metadata, notifier):
rfile = io.BytesIO(
b"\n".join(
[
b"HELLO",
b"Btx00\tuser@example.org",
b"Stx00\tpriv/guid00/devicetoken\t01234",
b"Ctx00",
]
)
)
wfile = io.BytesIO()
handle_dovecot_protocol(rfile, wfile, notifier, metadata)
assert metadata.get_tokens_for_addr("user@example.org") == ["01234"]
assert wfile.getvalue() == b"O\n"
rfile = io.BytesIO(
b"\n".join([b"HELLO", b"Lpriv/0123/devicetoken\tuser@example.org"])
)
wfile = io.BytesIO()
handle_dovecot_protocol(rfile, wfile, notifier, metadata)
assert wfile.getvalue() == b"O01234\n"
def test_handle_dovecot_protocol_iterate(metadata, notifier):
rfile = io.BytesIO(
b"\n".join(
[
b"H",
b"I9\t0\tpriv/5cbe730f146fea6535be0d003dd4fc98/\tci-2dzsrs@nine.testrun.org",
]
)
)
wfile = io.BytesIO()
handle_dovecot_protocol(rfile, wfile, notifier, metadata)
assert wfile.getvalue() == b"\n"
def test_notifier_thread_deletes_persistent_file(metadata, notifier, testaddr):
reqmock = get_mocked_requests([200])
metadata.add_token_to_addr(testaddr, "01234")
notifier.new_message_for_addr(testaddr, metadata)
NotifyThread(notifier, 0, None).retry_one(reqmock)
url, data, timeout = reqmock.requests[0]
assert data == "01234"
assert metadata.get_tokens_for_addr(testaddr) == ["01234"]
notifier.requeue_persistent_queue_items()
assert notifier.retry_queues[0].qsize() == 0
@pytest.mark.parametrize("status", [requests.exceptions.RequestException(), 404, 500])
def test_notifier_thread_connection_failures(
metadata, notifier, testaddr, status, caplog
):
"""test that tokens keep getting retried until they are given up."""
metadata.add_token_to_addr(testaddr, "01234")
notifier.new_message_for_addr(testaddr, metadata)
notifier.NOTIFICATION_RETRY_DELAY = 5
max_tries = len(notifier.retry_queues)
for i in range(max_tries):
caplog.clear()
reqmock = get_mocked_requests([status])
sleep_calls = []
NotifyThread(notifier, i, None).retry_one(reqmock, sleep=sleep_calls.append)
assert notifier.retry_queues[i].qsize() == 0
assert "request failed" in caplog.records[0].msg
if i > 0:
assert len(sleep_calls) == 1
if i + 1 < max_tries:
assert notifier.retry_queues[i + 1].qsize() == 1
assert len(caplog.records) == 1
else:
assert len(caplog.records) == 2
assert "deadline" in caplog.records[1].msg
notifier.requeue_persistent_queue_items()
assert notifier.retry_queues[0].qsize() == 0
def test_requeue_removes_tmp_files(notifier, metadata, testaddr, caplog):
metadata.add_token_to_addr(testaddr, "01234")
notifier.new_message_for_addr(testaddr, metadata)
p = notifier.queue_dir.joinpath("1203981203.tmp")
p.touch()
notifier2 = notifier.__class__(notifier.queue_dir)
notifier2.requeue_persistent_queue_items()
assert "spurious" in caplog.records[0].msg
assert not p.exists()
assert notifier2.retry_queues[0].qsize() == 1
when, queue_item = notifier2.retry_queues[0].get()
assert when <= int(time.time())
assert queue_item.addr == testaddr
def test_start_and_stop_notification_threads(notifier, testaddr):
threads = notifier.start_notification_threads(None)
for retry_num, threadlist in threads.items():
for t in threadlist:
t.stop()
t.join()
def test_multi_device_notifier(metadata, notifier, testaddr):
metadata.add_token_to_addr(testaddr, "01234")
metadata.add_token_to_addr(testaddr, "56789")
notifier.new_message_for_addr(testaddr, metadata)
reqmock = get_mocked_requests([200, 200])
NotifyThread(notifier, 0, None).retry_one(reqmock)
NotifyThread(notifier, 0, None).retry_one(reqmock)
assert notifier.retry_queues[0].qsize() == 0
assert notifier.retry_queues[1].qsize() == 0
url, data, timeout = reqmock.requests[0]
assert data == "01234"
url, data, timeout = reqmock.requests[1]
assert data == "56789"
assert metadata.get_tokens_for_addr(testaddr) == ["01234", "56789"]
def test_notifier_thread_run_gone_removes_token(metadata, notifier, testaddr):
metadata.add_token_to_addr(testaddr, "01234")
metadata.add_token_to_addr(testaddr, "45678")
notifier.new_message_for_addr(testaddr, metadata)
reqmock = get_mocked_requests([410, 200])
NotifyThread(notifier, 0, metadata.remove_token_from_addr).retry_one(reqmock)
NotifyThread(notifier, 0, None).retry_one(reqmock)
url, data, timeout = reqmock.requests[0]
assert data == "01234"
url, data, timeout = reqmock.requests[1]
assert data == "45678"
assert metadata.get_tokens_for_addr(testaddr) == ["45678"]
assert notifier.retry_queues[0].qsize() == 0
assert notifier.retry_queues[1].qsize() == 0
def test_persistent_queue_items(tmp_path, testaddr, token):
queue_item = PersistentQueueItem.create(tmp_path, testaddr, 432, token)
assert queue_item.addr == testaddr
assert queue_item.start_ts == 432
assert queue_item.token == token
item2 = PersistentQueueItem.read_from_path(queue_item.path)
assert item2.addr == testaddr
assert item2.start_ts == 432
assert item2.token == token
assert item2 == queue_item
item2.delete()
assert not item2.path.exists()
assert not queue_item < item2 and not item2 < queue_item

View File

@@ -19,7 +19,6 @@ dependencies = [
"black",
"pytest",
"pytest-xdist",
"imap_tools",
]
[project.scripts]

View File

@@ -1,7 +1,6 @@
"""
Chat Mail pyinfra deploy.
"""
import sys
import importlib.resources
import subprocess
@@ -102,17 +101,13 @@ def _install_remote_venv_with_chatmaild(config) -> None:
"doveauth",
"filtermail",
"echobot",
"chatmail-metadata",
):
params = dict(
execpath=f"{remote_venv_dir}/bin/{fn}",
config_path=remote_chatmail_inipath,
remote_venv_dir=remote_venv_dir,
mail_domain=config.mail_domain,
)
source_path = importlib.resources.files(__package__).joinpath(
"service", f"{fn}.service.f"
)
source_path = importlib.resources.files("chatmaild").joinpath(f"{fn}.service.f")
content = source_path.read_text().format(**params).encode()
files.put(
@@ -131,93 +126,6 @@ def _install_remote_venv_with_chatmaild(config) -> None:
)
def _configure_opendkim(domain: str, dkim_selector: str = "dkim") -> bool:
"""Configures OpenDKIM"""
need_restart = False
main_config = files.template(
src=importlib.resources.files(__package__).joinpath("opendkim/opendkim.conf"),
dest="/etc/opendkim.conf",
user="root",
group="root",
mode="644",
config={"domain_name": domain, "opendkim_selector": dkim_selector},
)
need_restart |= main_config.changed
screen_script = files.put(
src=importlib.resources.files(__package__).joinpath("opendkim/screen.lua"),
dest="/etc/opendkim/screen.lua",
user="root",
group="root",
mode="644",
)
need_restart |= screen_script.changed
final_script = files.put(
src=importlib.resources.files(__package__).joinpath("opendkim/final.lua"),
dest="/etc/opendkim/final.lua",
user="root",
group="root",
mode="644",
)
need_restart |= final_script.changed
files.directory(
name="Add opendkim directory to /etc",
path="/etc/opendkim",
user="opendkim",
group="opendkim",
mode="750",
present=True,
)
keytable = files.template(
src=importlib.resources.files(__package__).joinpath("opendkim/KeyTable"),
dest="/etc/dkimkeys/KeyTable",
user="opendkim",
group="opendkim",
mode="644",
config={"domain_name": domain, "opendkim_selector": dkim_selector},
)
need_restart |= keytable.changed
signing_table = files.template(
src=importlib.resources.files(__package__).joinpath("opendkim/SigningTable"),
dest="/etc/dkimkeys/SigningTable",
user="opendkim",
group="opendkim",
mode="644",
config={"domain_name": domain, "opendkim_selector": dkim_selector},
)
need_restart |= signing_table.changed
files.directory(
name="Add opendkim socket directory to /var/spool/postfix",
path="/var/spool/postfix/opendkim",
user="opendkim",
group="opendkim",
mode="750",
present=True,
)
apt.packages(
name="apt install opendkim opendkim-tools",
packages=["opendkim", "opendkim-tools"],
)
if not host.get_fact(File, f"/etc/dkimkeys/{dkim_selector}.private"):
server.shell(
name="Generate OpenDKIM domain keys",
commands=[
f"opendkim-genkey -D /etc/dkimkeys -d {domain} -s {dkim_selector}"
],
_sudo=True,
_sudo_user="opendkim",
)
return need_restart
def _install_mta_sts_daemon() -> bool:
need_restart = False
@@ -292,16 +200,6 @@ def _configure_postfix(config: Config, debug: bool = False) -> bool:
)
need_restart |= header_cleanup.changed
# Login map that 1:1 maps email address to login.
login_map = files.put(
src=importlib.resources.files(__package__).joinpath("postfix/login_map"),
dest="/etc/postfix/login_map",
user="root",
group="root",
mode="644",
)
need_restart |= login_map.changed
return need_restart
@@ -327,30 +225,6 @@ def _configure_dovecot(config: Config, debug: bool = False) -> bool:
mode="644",
)
need_restart |= auth_config.changed
lua_push_notification_script = files.put(
src=importlib.resources.files(__package__).joinpath(
"dovecot/push_notification.lua"
),
dest="/etc/dovecot/push_notification.lua",
user="root",
group="root",
mode="644",
)
need_restart |= lua_push_notification_script.changed
sieve_script = files.put(
src=importlib.resources.files(__package__).joinpath("dovecot/default.sieve"),
dest="/etc/dovecot/default.sieve",
user="root",
group="root",
mode="644",
)
need_restart |= sieve_script.changed
if sieve_script.changed:
server.shell(
name="compile sieve script",
commands=["/usr/bin/sievec /etc/dovecot/default.sieve"],
)
files.template(
src=importlib.resources.files(__package__).joinpath("dovecot/expunge.cron.j2"),
@@ -431,20 +305,113 @@ def _configure_nginx(domain: str, debug: bool = False) -> bool:
return need_restart
def _remove_rspamd() -> None:
"""Remove rspamd"""
apt.packages(name="Remove rspamd", packages="rspamd", present=False)
def remove_opendkim() -> None:
"""Remove OpenDKIM, deprecated"""
files.file(
name="Remove legacy opendkim.conf",
path="/etc/opendkim.conf",
present=False,
)
files.directory(
name="Remove legacy opendkim socket directory from /var/spool/postfix",
path="/var/spool/postfix/opendkim",
present=False,
)
apt.packages(name="Remove openDKIM", packages="opendkim", present=False)
def _configure_rspamd(dkim_selector: str, mail_domain: str) -> bool:
"""Configures rspamd for Rate Limiting."""
need_restart = False
apt.packages(
name="apt install rspamd",
packages="rspamd",
)
for module in ["phishing", "rbl", "hfilter", "ratelimit"]:
disabled_module_conf = files.put(
name=f"disable {module} rspamd plugin",
src=importlib.resources.files(__package__).joinpath("rspamd/disabled.conf"),
dest=f"/etc/rspamd/local.d/{module}.conf",
user="root",
group="root",
mode="644",
)
need_restart |= disabled_module_conf.changed
options_inc = files.put(
name="disable fuzzy checks",
src=importlib.resources.files(__package__).joinpath("rspamd/options.inc"),
dest="/etc/rspamd/local.d/options.inc",
user="root",
group="root",
mode="644",
)
need_restart |= options_inc.changed
# https://rspamd.com/doc/modules/force_actions.html
force_actions_conf = files.put(
name="Set up rules to reject on DKIM, SPF and DMARC fails",
src=importlib.resources.files(__package__).joinpath(
"rspamd/force_actions.conf"
),
dest="/etc/rspamd/local.d/force_actions.conf",
user="root",
group="root",
mode="644",
)
need_restart |= force_actions_conf.changed
dkim_directory = "/var/lib/rspamd/dkim/"
dkim_key_path = f"{dkim_directory}{mail_domain}.{dkim_selector}.key"
dkim_dns_file = f"{dkim_directory}{mail_domain}.{dkim_selector}.zone"
dkim_config = files.template(
src=importlib.resources.files(__package__).joinpath(
"rspamd/dkim_signing.conf.j2"
),
dest="/etc/rspamd/local.d/dkim_signing.conf",
user="root",
group="root",
mode="644",
config={
"dkim_selector": str(dkim_selector),
"mail_domain": mail_domain,
"dkim_key_path": dkim_key_path,
},
)
need_restart |= dkim_config.changed
files.directory(
name="ensure DKIM key directory exists",
path=dkim_directory,
present=True,
user="_rspamd",
group="_rspamd",
)
if not host.get_fact(File, dkim_key_path):
server.shell(
name="Generate DKIM domain keys with rspamd",
commands=[
f"rspamadm dkim_keygen -b 2048 -s {dkim_selector} -d {mail_domain} -k {dkim_key_path} > {dkim_dns_file}"
],
_sudo=True,
_sudo_user="_rspamd",
)
return need_restart
def check_config(config):
mail_domain = config.mail_domain
if mail_domain != "testrun.org" and not mail_domain.endswith(".testrun.org"):
blocked_words = "merlinux schmieder testrun.org".split()
for key in config.__dict__:
value = config.__dict__[key]
if key.startswith("privacy") and any(
x in str(value) for x in blocked_words
):
for value in config.__dict__.values():
if any(x in str(value) for x in blocked_words):
raise ValueError(
f"please set your own privacy contacts/addresses in {config._inipath}"
)
@@ -462,51 +429,9 @@ def deploy_chatmail(config_path: Path) -> None:
from .www import build_webpages
apt.update(name="apt update", cache_time=24 * 3600)
server.group(name="Create vmail group", group="vmail", system=True)
server.user(name="Create vmail user", user="vmail", group="vmail", system=True)
server.group(name="Create opendkim group", group="opendkim", system=True)
server.user(
name="Create opendkim user",
user="opendkim",
groups=["opendkim"],
system=True,
)
server.user(
name="Add postfix user to opendkim group for socket access",
user="postfix",
groups=["opendkim"],
system=True,
)
server.user(name="Create echobot user", user="echobot", system=True)
server.shell(
name="Fix file owner in /home/vmail",
commands=["test -d /home/vmail && chown -R vmail:vmail /home/vmail"],
)
# Add our OBS repository for dovecot_no_delay
files.put(
name = "Add Deltachat OBS GPG key to apt keyring",
src = importlib.resources.files(__package__).joinpath("obs-home-deltachat.gpg"),
dest = "/etc/apt/keyrings/obs-home-deltachat.gpg",
user="root",
group="root",
mode="644",
)
files.line(
name = "Add DeltaChat OBS home repository to sources.list",
path = "/etc/apt/sources.list",
line = "deb [signed-by=/etc/apt/keyrings/obs-home-deltachat.gpg] https://download.opensuse.org/repositories/home:/deltachat/Debian_12/ ./",
ensure_newline = True,
)
apt.update(name="apt update", cache_time=24 * 3600)
apt.packages(
name="Install rsync",
packages=["rsync"],
)
# Run local DNS resolver `unbound`.
# `resolvconf` takes care of setting up /etc/resolv.conf
@@ -531,6 +456,7 @@ def deploy_chatmail(config_path: Path) -> None:
# Deploy acmetool to have TLS certificates.
deploy_acmetool(
nginx_hook=True,
domains=[mail_domain, f"mta-sts.{mail_domain}", f"www.{mail_domain}"],
)
@@ -541,7 +467,7 @@ def deploy_chatmail(config_path: Path) -> None:
apt.packages(
name="Install Dovecot",
packages=["dovecot-imapd", "dovecot-lmtpd", "dovecot-sieve"],
packages=["dovecot-imapd", "dovecot-lmtpd"],
)
apt.packages(
@@ -568,15 +494,15 @@ def deploy_chatmail(config_path: Path) -> None:
mta_sts_need_restart = _install_mta_sts_daemon()
nginx_need_restart = _configure_nginx(mail_domain)
_remove_rspamd()
opendkim_need_restart = _configure_opendkim(mail_domain, "opendkim")
remove_opendkim()
rspamd_need_restart = _configure_rspamd("dkim", mail_domain)
systemd.service(
name="Start and enable OpenDKIM",
service="opendkim.service",
name="Start and enable rspamd",
service="rspamd.service",
running=True,
enabled=True,
restarted=opendkim_need_restart,
restarted=rspamd_need_restart,
)
systemd.service(
@@ -588,17 +514,6 @@ def deploy_chatmail(config_path: Path) -> None:
restarted=mta_sts_need_restart,
)
# Dovecot should be started before Postfix
# because it creates authentication socket
# required by Postfix.
systemd.service(
name="Start and enable Dovecot",
service="dovecot.service",
running=True,
enabled=True,
restarted=dovecot_need_restart,
)
systemd.service(
name="Start and enable Postfix",
service="postfix.service",
@@ -607,6 +522,14 @@ def deploy_chatmail(config_path: Path) -> None:
restarted=postfix_need_restart,
)
systemd.service(
name="Start and enable Dovecot",
service="dovecot.service",
running=True,
enabled=True,
restarted=dovecot_need_restart,
)
systemd.service(
name="Start and enable nginx",
service="nginx.service",

View File

@@ -5,7 +5,7 @@ from pyinfra import host
from pyinfra.facts.systemd import SystemdStatus
def deploy_acmetool(email="", domains=[]):
def deploy_acmetool(nginx_hook=False, email="", domains=[]):
"""Deploy acmetool."""
apt.packages(
name="Install acmetool",
@@ -20,13 +20,16 @@ def deploy_acmetool(email="", domains=[]):
mode="644",
)
files.put(
src=importlib.resources.files(__package__).joinpath("acmetool.hook").open("rb"),
dest="/usr/lib/acme/hooks/nginx",
user="root",
group="root",
mode="744",
)
if nginx_hook:
files.put(
src=importlib.resources.files(__package__)
.joinpath("acmetool.hook")
.open("rb"),
dest="/usr/lib/acme/hooks/nginx",
user="root",
group="root",
mode="744",
)
files.template(
src=importlib.resources.files(__package__).joinpath("response-file.yaml.j2"),
@@ -71,5 +74,5 @@ def deploy_acmetool(email="", domains=[]):
server.shell(
name=f"Request certificate for: { ', '.join(domains) }",
commands=[f"acmetool want --xlog.severity=debug { ' '.join(domains)}"],
commands=[f"acmetool want { ' '.join(domains)}"],
)

View File

@@ -1,4 +1,4 @@
SHELL=/bin/sh
PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin
MAILTO=root
20 16 * * * root /usr/bin/acmetool --batch reconcile && systemctl reload dovecot && systemctl reload postfix
20 16 * * * root /usr/bin/acmetool --batch reconcile

View File

@@ -3,5 +3,3 @@ set -e
EVENT_NAME="$1"
[ "$EVENT_NAME" = "live-updated" ] || exit 42
systemctl restart nginx.service
systemctl reload dovecot.service
systemctl reload postfix.service

View File

@@ -1,2 +1,2 @@
"acme-enter-email": "{{ email }}"
"acme-agreement:https://letsencrypt.org/documents/LE-SA-v1.4-April-3-2024.pdf": true
"acme-agreement:https://letsencrypt.org/documents/LE-SA-v1.3-September-21-2022.pdf": true

View File

@@ -6,10 +6,10 @@ _submissions._tcp.{chatmail_domain}. SRV 0 1 465 {chatmail_domain}.
_imap._tcp.{chatmail_domain}. SRV 0 1 143 {chatmail_domain}.
_imaps._tcp.{chatmail_domain}. SRV 0 1 993 {chatmail_domain}.
{chatmail_domain}. CAA 128 issue "letsencrypt.org;accounturi={acme_account_url}"
{chatmail_domain}. TXT "v=spf1 a:{chatmail_domain} ~all"
{chatmail_domain}. TXT "v=spf1 a:{chatmail_domain} -all"
_dmarc.{chatmail_domain}. TXT "v=DMARC1;p=reject;adkim=s;aspf=s"
_mta-sts.{chatmail_domain}. TXT "v=STSv1; id={sts_id}"
mta-sts.{chatmail_domain}. CNAME {chatmail_domain}.
www.{chatmail_domain}. CNAME {chatmail_domain}.
_smtp._tls.{chatmail_domain}. TXT "v=TLSRPTv1;rua=mailto:{email}"
{dkim_entry}
_adsp._domainkey.{chatmail_domain}. TXT "dkim=discardable"

View File

@@ -2,7 +2,6 @@
Provides the `cmdeploy` entry point function,
along with command line option and subcommand parsing.
"""
import argparse
import shutil
import subprocess

View File

@@ -11,11 +11,6 @@ class DNS:
self.session = requests.Session()
self.out = out
self.ssh = f"ssh root@{mail_domain} -- "
self.out.shell_output(
f"{ self.ssh }'apt-get update && apt-get install -y dnsutils'",
timeout=60,
no_print=True,
)
try:
self.shell(f"unbound-control flush_zone {mail_domain}")
except subprocess.CalledProcessError:
@@ -39,11 +34,12 @@ class DNS:
cmd = "ip a | grep inet6 | grep 'scope global' | sed -e 's#/64 scope global##' | sed -e 's#inet6##'"
return self.shell(cmd).strip()
def get(self, typ: str, domain: str) -> str:
"""Get a DNS entry or empty string if there is none."""
def get(self, typ: str, domain: str) -> str | None:
"""Get a DNS entry"""
dig_result = self.shell(f"dig -r -q {domain} -t {typ} +short")
line = dig_result.partition("\n")[0]
return line
if line:
return line
def check_ptr_record(self, ip: str, mail_domain) -> bool:
"""Check the PTR record for an IPv4 or IPv6 address."""
@@ -58,25 +54,27 @@ def show_dns(args, out) -> int:
ssh = f"ssh root@{mail_domain}"
dns = DNS(out, mail_domain)
def read_dkim_entries(entry):
lines = []
for line in entry.split("\n"):
if line.startswith(";") or not line.strip():
continue
line = line.replace("\t", " ")
lines.append(line)
lines[0] = f"dkim._domainkey.{mail_domain}. IN TXT " + lines[0].strip(
"dkim._domainkey IN TXT "
)
return "\n".join(lines)
print("Checking your DKIM keys and DNS entries...")
try:
acme_account_url = out.shell_output(f"{ssh} -- acmetool account-url")
except subprocess.CalledProcessError:
print("Please run `cmdeploy run` first.")
return 1
dkim_selector = "opendkim"
dkim_pubkey = out.shell_output(
ssh + f" -- openssl rsa -in /etc/dkimkeys/{dkim_selector}.private"
" -pubout 2>/dev/null | awk '/-/{next}{printf(\"%s\",$0)}'"
dkim_entry = read_dkim_entries(
out.shell_output(f"{ssh} -- cat /var/lib/rspamd/dkim/{mail_domain}.dkim.zone")
)
dkim_entry_value = f"v=DKIM1;k=rsa;p={dkim_pubkey};s=email;t=s"
dkim_entry_str = ""
while len(dkim_entry_value) >= 255:
dkim_entry_str += '"' + dkim_entry_value[:255] + '" '
dkim_entry_value = dkim_entry_value[255:]
dkim_entry_str += '"' + dkim_entry_value + '"'
dkim_entry = f"{dkim_selector}._domainkey.{mail_domain}. TXT {dkim_entry_str}"
ipv6 = dns.get_ipv6()
reverse_ipv6 = dns.check_ptr_record(ipv6, mail_domain)
@@ -89,6 +87,7 @@ def show_dns(args, out) -> int:
f.read()
.format(
acme_account_url=acme_account_url,
email=f"root@{args.config.mail_domain}",
sts_id=datetime.datetime.now().strftime("%Y%m%d%H%M"),
chatmail_domain=args.config.mail_domain,
dkim_entry=dkim_entry,
@@ -104,9 +103,11 @@ def show_dns(args, out) -> int:
return 0
except TypeError:
pass
started_dkim_parsing = False
for line in zonefile.splitlines():
line = line.format(
acme_account_url=acme_account_url,
email=f"root@{args.config.mail_domain}",
sts_id=datetime.datetime.now().strftime("%Y%m%d%H%M"),
chatmail_domain=args.config.mail_domain,
dkim_entry=dkim_entry,
@@ -130,23 +131,28 @@ def show_dns(args, out) -> int:
current = dns.get("SRV", domain[:-1])
if current != f"{prio} {weight} {port} {value}":
to_print.append(line)
if " TXT " in line:
if " TXT " in line:
domain, value = line.split(" TXT ")
current = dns.get("TXT", domain.strip()[:-1])
if domain.startswith("_mta-sts."):
if current:
if current.split("id=")[0] == value.split("id=")[0]:
continue
# TXT records longer than 255 bytes
# are split into multiple <character-string>s.
# This typically happens with DKIM record
# which contains long RSA key.
#
# Removing `" "` before comparison
# to get back a single string.
if current.replace('" "', "") != value.replace('" "', ""):
if current != value:
to_print.append(line)
if " IN TXT ( " in line:
started_dkim_parsing = True
dkim_lines = [line]
if started_dkim_parsing and line.startswith('"'):
dkim_lines.append(" " + line)
domain, data = "\n".join(dkim_lines).split(" IN TXT ")
current = dns.get("TXT", domain.strip()[:-1])
if current:
current = "( %s" % (current.replace('" "', '"\n "'))
if current != data:
to_print.append(dkim_entry)
else:
to_print.append(dkim_entry)
exit_code = 0
if to_print:

View File

@@ -1,4 +1,4 @@
uri = proxy:/run/doveauth/doveauth.socket:auth
uri = proxy:/run/dovecot/doveauth.socket:auth
iterate_disable = yes
default_pass_scheme = plain
# %E escapes characters " (double quote), ' (single quote) and \ (backslash) with \ (backslash).

View File

@@ -1,7 +0,0 @@
require ["imap4flags"];
# flag the message so it doesn't cause a push notification
if header :is ["Auto-Submitted"] ["auto-replied", "auto-generated"] {
addflag "$Auto";
}

View File

@@ -13,21 +13,13 @@ auth_cache_size = 100M
mail_debug = yes
{% endif %}
# Prevent warnings similar to:
# config: Warning: service auth { client_limit=1000 } is lower than required under max. load (10200). Counted for protocol services with service_count != 1: service lmtp { process_limit=100 } + service imap-urlauth-login { process_limit=100 } + service imap-login { process_limit=10000 }
# config: Warning: service anvil { client_limit=1000 } is lower than required under max. load (10103). Counted with: service imap-urlauth-login { process_limit=100 } + service imap-login { process_limit=10000 } + service auth { process_limit=1 }
# master: Warning: service(stats): client_limit (1000) reached, client connections are being dropped
default_client_limit = 20000
mail_server_admin = mailto:root@{{ config.mail_domain }}
mail_server_comment = Chatmail server
mail_plugins = quota
# these are the capabilities Delta Chat cares about actually
# so let's keep the network overhead per login small
# https://github.com/deltachat/deltachat-core-rust/blob/master/src/imap/capabilities.rs
imap_capability = IMAP4rev1 IDLE MOVE QUOTA CONDSTORE NOTIFY METADATA XDELTAPUSH
imap_capability = IMAP4rev1 IDLE MOVE QUOTA CONDSTORE NOTIFY
# Authentication for system users.
@@ -77,32 +69,14 @@ mail_privileged_group = vmail
## Mail processes
##
# Pass all IMAP METADATA requests to the server implementing Dovecot's dict protocol.
mail_attribute_dict = proxy:/run/chatmail-metadata/metadata.socket:metadata
# Enable IMAP COMPRESS (RFC 4978).
# <https://datatracker.ietf.org/doc/html/rfc4978.html>
protocol imap {
mail_plugins = $mail_plugins imap_zlib imap_quota
imap_metadata = yes
}
protocol lmtp {
# quota plugin documentation:
# <https://doc.dovecot.org/configuration_manual/quota_plugin/>
#
# notify plugin is a dependency of push_notification plugin:
# <https://doc.dovecot.org/settings/plugin/notify-plugin/>
#
# push_notification plugin documentation:
# <https://doc.dovecot.org/configuration_manual/push_notification/>
#
# mail_lua and push_notification_lua are needed for Lua push notification handler.
# <https://doc.dovecot.org/configuration_manual/push_notification/#configuration>
#
# Sieve to mark messages that should not be notified as \Seen
# <https://doc.dovecot.org/configuration_manual/sieve/configuration/>
mail_plugins = $mail_plugins quota mail_lua notify push_notification push_notification_lua sieve
mail_plugins = $mail_plugins quota
}
plugin {
@@ -118,15 +92,7 @@ plugin {
# quota_over_flag_value = TRUE
}
# push_notification configuration
plugin {
# <https://doc.dovecot.org/configuration_manual/push_notification/#lua-lua>
push_notification_driver = lua:file=/etc/dovecot/push_notification.lua
}
plugin {
sieve_default = file:/etc/dovecot/default.sieve
}
service lmtp {
user=vmail

View File

@@ -1,11 +1,10 @@
# delete all mails after {{ config.delete_mails_after }} days, in the Inbox
2 0 * * * vmail find /home/vmail/mail/{{ config.mail_domain }} -path '*/cur/*' -mtime +{{ config.delete_mails_after }} -type f -delete
2 0 * * * dovecot find /home/vmail/mail/{{ config.mail_domain }}/*/cur -mtime +{{ config.delete_mails_after }} -type f -delete
# or in any IMAP subfolder
2 0 * * * vmail find /home/vmail/mail/{{ config.mail_domain }} -path '*/.*/cur/*' -mtime +{{ config.delete_mails_after }} -type f -delete
2 0 * * * dovecot find /home/vmail/mail/{{ config.mail_domain }}/*/.*/cur -mtime +{{ config.delete_mails_after }} -type f -delete
# even if they are unseen
2 0 * * * vmail find /home/vmail/mail/{{ config.mail_domain }} -path '*/new/*' -mtime +{{ config.delete_mails_after }} -type f -delete
2 0 * * * vmail find /home/vmail/mail/{{ config.mail_domain }} -path '*/.*/new/*' -mtime +{{ config.delete_mails_after }} -type f -delete
2 0 * * * dovecot find /home/vmail/mail/{{ config.mail_domain }}/*/new -mtime +{{ config.delete_mails_after }} -type f -delete
2 0 * * * dovecot find /home/vmail/mail/{{ config.mail_domain }}/*/.*/new -mtime +{{ config.delete_mails_after }} -type f -delete
# or only temporary (but then they shouldn't be around after {{ config.delete_mails_after }} days anyway).
2 0 * * * vmail find /home/vmail/mail/{{ config.mail_domain }} -path '*/tmp/*' -mtime +{{ config.delete_mails_after }} -type f -delete
2 0 * * * vmail find /home/vmail/mail/{{ config.mail_domain }} -path '*/.*/tmp/*' -mtime +{{ config.delete_mails_after }} -type f -delete
3 0 * * * vmail find /home/vmail/mail/{{ config.mail_domain }} -name 'maildirsize' -type f -delete
2 0 * * * dovecot find /home/vmail/mail/{{ config.mail_domain }}/*/tmp -mtime +{{ config.delete_mails_after }} -type f -delete
2 0 * * * dovecot find /home/vmail/mail/{{ config.mail_domain }}/*/.*/tmp -mtime +{{ config.delete_mails_after }} -type f -delete

View File

@@ -1,32 +0,0 @@
function dovecot_lua_notify_begin_txn(user)
return user
end
function contains(v, needle)
for _, keyword in ipairs(v) do
if keyword == needle then
return true
end
end
return false
end
function dovecot_lua_notify_event_message_new(user, event)
local mbox = user:mailbox(event.mailbox)
mbox:sync()
if user.username ~= event.from_address then
-- Incoming message
if not contains(event.keywords, "$Auto") then
-- Not an Auto-Submitted message, notifying.
-- Notify METADATA server about new message.
mbox:metadata_set("/private/messagenew", "")
end
end
mbox:free()
end
function dovecot_lua_notify_end_txn(ctx, success)
end

View File

@@ -1 +1 @@
{{ config.opendkim_selector }}._domainkey.{{ config.domain_name }} {{ config.domain_name }}:{{ config.opendkim_selector }}:/etc/dkimkeys/{{ config.opendkim_selector }}.private
dkim._domainkey.{{ config.domain_name }} {{ config.domain_name }}:{{ config.opendkim_selector }}:/etc/dkimkeys/dkim.private

View File

@@ -1,28 +0,0 @@
if odkim.internal_ip(ctx) == 1 then
-- Outgoing message will be signed,
-- no need to look for signatures.
return nil
end
nsigs = odkim.get_sigcount(ctx)
if nsigs == nil then
return nil
end
for i = 1, nsigs do
sig = odkim.get_sighandle(ctx, i - 1)
sigres = odkim.sig_result(sig)
-- All signatures that do not correspond to From:
-- were ignored in screen.lua and return sigres -1.
--
-- Any valid signature that was not ignored like this
-- means the message is acceptable.
if sigres == 0 then
return nil
end
end
odkim.set_reply(ctx, "554", "5.7.1", "No valid DKIM signature found")
odkim.set_result(ctx, SMFIS_REJECT)
return nil

View File

@@ -8,12 +8,10 @@ SyslogSuccess yes
# oversigned, because it is often the identity key used by reputation systems
# and thus somewhat security sensitive.
Canonicalization relaxed/simple
#Mode sv
#SubDomains no
OversignHeaders From
On-BadSignature reject
On-KeyNotFound reject
On-NoSignature reject
# Signing domain, selector, and key (required). For example, perform signing
# for domain "example.com" with selector "2020" (2020._domainkey.example.com),
# using the private key stored in /etc/dkimkeys/example.private. More granular
@@ -24,15 +22,6 @@ KeyFile /etc/dkimkeys/{{ config.opendkim_selector }}.private
KeyTable /etc/dkimkeys/KeyTable
SigningTable refile:/etc/dkimkeys/SigningTable
# Sign Autocrypt header in addition to the default specified in RFC 6376.
SignHeaders *,+autocrypt
# Script to ignore signatures that do not correspond to the From: domain.
ScreenPolicyScript /etc/opendkim/screen.lua
# Script to reject mails without a valid DKIM signature.
FinalPolicyScript /etc/opendkim/final.lua
# In Debian, opendkim runs as user "opendkim". A umask of 007 is required when
# using a local socket with MTAs that access the socket as a non-privileged
# user (for example, Postfix). You may need to add user "postfix" to group
@@ -40,10 +29,22 @@ FinalPolicyScript /etc/opendkim/final.lua
UserID opendkim
UMask 007
# Socket for the MTA connection (required). If the MTA is inside a chroot jail,
# it must be ensured that the socket is accessible. In Debian, Postfix runs in
# a chroot in /var/spool/postfix, therefore a Unix socket would have to be
# configured as shown on the last line below.
#Socket local:/run/opendkim/opendkim.sock
#Socket inet:8891@localhost
#Socket inet:8891
Socket local:/var/spool/postfix/opendkim/opendkim.sock
PidFile /run/opendkim/opendkim.pid
# Hosts for which to sign rather than verify, default is 127.0.0.1. See the
# OPERATION section of opendkim(8) for more information.
#InternalHosts 192.168.0.0/16, 10.0.0.0/8, 172.16.0.0/12
# The trust anchor enables DNSSEC. In Debian, the trust anchor file is provided
# by the package dns-root-data.
TrustAnchorFile /usr/share/dns/root.key
#Nameservers 127.0.0.1

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@@ -1,21 +0,0 @@
-- Ignore signatures that do not correspond to the From: domain.
from_domain = odkim.get_fromdomain(ctx)
if from_domain == nil then
return nil
end
n = odkim.get_sigcount(ctx)
if n == nil then
return nil
end
for i = 1, n do
sig = odkim.get_sighandle(ctx, i - 1)
sig_domain = odkim.sig_getdomain(sig)
if from_domain ~= sig_domain then
odkim.sig_ignore(sig)
end
end
return nil

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@@ -1 +0,0 @@
/^(.*)$/ ${1}

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@@ -23,31 +23,6 @@ smtp_tls_CApath=/etc/ssl/certs
smtp_tls_security_level=may
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtp_tls_policy_maps = socketmap:inet:127.0.0.1:8461:postfix
smtpd_tls_protocols = >=TLSv1.2
# Disable anonymous cipher suites
# and known insecure algorithms.
#
# Disabling anonymous ciphers
# does not generally improve security
# because clients that want to verify certificate
# will not select them anyway,
# but makes cipher suite list shorter and security scanners happy.
# See <https://www.postfix.org/TLS_README.html> for discussion.
#
# Only ancient insecure ciphers should be disabled here
# as MTA clients that do not support more secure cipher
# likely do not support MTA-STS either and will
# otherwise fall back to using plaintext connection.
smtpd_tls_exclude_ciphers = aNULL, RC4, MD5, DES
# Override client's preference order.
# <https://www.postfix.org/postconf.5.html#tls_preempt_cipherlist>
#
# This is mostly to ensure cipher suites with forward secrecy
# are preferred over non cipher suites without forward secrecy.
# See <https://www.postfix.org/FORWARD_SECRECY_README.html#server_fs>.
tls_preempt_cipherlist = yes
smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
myhostname = {{ config.mail_domain }}
@@ -71,9 +46,7 @@ inet_protocols = all
virtual_transport = lmtp:unix:private/dovecot-lmtp
virtual_mailbox_domains = {{ config.mail_domain }}
mua_client_restrictions = permit_sasl_authenticated, reject
mua_sender_restrictions = reject_sender_login_mismatch, permit_sasl_authenticated, reject
mua_helo_restrictions = permit_mynetworks, reject_invalid_helo_hostname, reject_non_fqdn_helo_hostname, permit
smtpd_milters = inet:127.0.0.1:11332
non_smtpd_milters = $smtpd_milters
# 1:1 map MAIL FROM to SASL login name.
smtpd_sender_login_maps = regexp:/etc/postfix/login_map
header_checks = regexp:/etc/postfix/submission_header_cleanup

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@@ -11,10 +11,13 @@
# ==========================================================================
{% if debug == true %}
smtp inet n - y - - smtpd -v
{%- else %}
{% else %}
smtp inet n - y - - smtpd
{%- endif %}
-o smtpd_milters=unix:opendkim/opendkim.sock
{% endif %}
#smtp inet n - y - 1 postscreen
#smtpd pass - - y - - smtpd
#dnsblog unix - - y - 0 dnsblog
#tlsproxy unix - - y - 0 tlsproxy
submission inet n - y - - smtpd
-o syslog_name=postfix/submission
-o smtpd_tls_security_level=encrypt
@@ -31,7 +34,6 @@ submission inet n - y - - smtpd
-o milter_macro_daemon_name=ORIGINATING
-o smtpd_client_connection_count_limit=1000
-o smtpd_proxy_filter=127.0.0.1:{{ config.filtermail_smtp_port }}
-o cleanup_service_name=authclean
smtps inet n - y - - smtpd
-o syslog_name=postfix/smtps
-o smtpd_tls_wrappermode=yes
@@ -48,7 +50,6 @@ smtps inet n - y - - smtpd
-o smtpd_client_connection_count_limit=1000
-o milter_macro_daemon_name=ORIGINATING
-o smtpd_proxy_filter=127.0.0.1:{{ config.filtermail_smtp_port }}
-o cleanup_service_name=authclean
#628 inet n - y - - qmqpd
pickup unix n - y 60 1 pickup
cleanup unix n - y - 0 cleanup
@@ -79,14 +80,3 @@ filter unix - n n - - lmtp
# Local SMTP server for reinjecting filered mail.
localhost:{{ config.postfix_reinject_port }} inet n - n - 10 smtpd
-o syslog_name=postfix/reinject
-o smtpd_milters=unix:opendkim/opendkim.sock
-o cleanup_service_name=authclean
# Cleanup `Received` headers for authenticated mail
# to avoid leaking client IP.
#
# We do not do this for received mails
# as this will break DKIM signatures
# if `Received` header is signed.
authclean unix n - - - 0 cleanup
-o header_checks=regexp:/etc/postfix/submission_header_cleanup

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@@ -0,0 +1 @@
enabled = false;

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@@ -0,0 +1,10 @@
selector = {{ config.dkim_selector }}
use_esld = false # don't cut c1.testrun.org down to testrun.org
domain = {
{{ config.mail_domain }} {
selectors [
selector = {{ config.dkim_selector }}
path = {{ config.dkim_key_path }}
]
}
}

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@@ -0,0 +1,60 @@
rules {
## Reject on missing or invalid DKIM signatures.
##
## We require DKIM signature on incoming mails regardless of DMARC policy.
# R_DKIM_REJECT: DKIM reject inserted by `dkim` module.
REJECT_INVALID_DKIM {
action = "reject";
expression = "R_DKIM_REJECT";
message = "Rejected due to invalid DKIM signature";
}
# R_DKIM_PERMFAIL: permanent failure inserted by `dkim` module e.g. no DKIM DNS record found.
REJECT_PERMFAIL_DKIM {
action = "reject";
expression = "R_DKIM_PERMFAIL";
message = "Rejected due to missing DKIM DNS entry";
}
# No DKIM signature (R_DKIM_NA symbol inserted by `dkim` module).
REJECT_MISSING_DKIM {
action = "reject";
expression = "R_DKIM_NA";
message = "Rejected due to missing DKIM signature";
}
## Reject on SPF failure.
# - SPF failure (R_SPF_FAIL)
# - SPF permanent failure, e.g. failed to resolve DNS record referenced from SPF (R_SPF_PERMFAIL)
REJECT_SPF {
action = "reject";
expression = "R_SPF_FAIL | R_SPF_PERMFAIL";
message = "Rejected due to failed SPF check";
}
# Reject on DMARC policy check failure.
REJECT_DMARC {
action = "reject";
expression = "DMARC_POLICY_REJECT";
message = "Rejected due to DMARC policy";
}
# Do not reject if:
# - R_DKIM_TEMPFAIL, it is a DNS resolution failure
# and we do not want to lose messages because of faulty network.
#
# - R_SPF_SOFTFAIL
# - R_SPF_NEUTRAL
# - R_SPF_DNSFAIL
# - R_SPF_NA
#
# - DMARC_DNSFAIL
# - DMARC_NA
# - DMARC_POLICY_SOFTFAIL
# - DMARC_POLICY_QUARANTINE
# - DMARC_BAD_POLICY
}

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@@ -0,0 +1 @@
filters = "dkim";

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@@ -1,12 +0,0 @@
[Unit]
Description=Chatmail dict proxy for IMAP METADATA
[Service]
ExecStart={execpath} /run/chatmail-metadata/metadata.socket /home/vmail/mail/{mail_domain}
Restart=always
RestartSec=30
User=vmail
RuntimeDirectory=chatmail-metadata
[Install]
WantedBy=multi-user.target

View File

@@ -1,67 +0,0 @@
[Unit]
Description=Chatmail echo bot for testing it works
[Service]
ExecStart={execpath} {config_path}
Environment="PATH={remote_venv_dir}:$PATH"
Restart=always
RestartSec=30
User=echobot
Group=echobot
# Create /var/lib/echobot
StateDirectory=echobot
# Create /run/echobot
#
# echobot stores /run/echobot/password
# with a password there, which doveauth then reads.
RuntimeDirectory=echobot
WorkingDirectory=/var/lib/echobot
# Apply security restrictions suggested by
# systemd-analyze security echobot.service
CapabilityBoundingSet=
LockPersonality=true
MemoryDenyWriteExecute=true
NoNewPrivileges=true
PrivateDevices=true
PrivateMounts=true
PrivateTmp=true
# We need to know about doveauth user to give it access to /run/echobot/password
PrivateUsers=false
ProtectClock=true
ProtectControlGroups=true
ProtectHostname=true
ProtectKernelLogs=true
ProtectKernelModules=true
ProtectKernelTunables=true
ProtectProc=noaccess
# Should be "strict", but we currently write /accounts folder in a protected path
ProtectSystem=full
RemoveIPC=true
RestrictAddressFamilies=AF_INET AF_INET6
RestrictNamespaces=true
RestrictRealtime=true
RestrictSUIDSGID=true
SystemCallArchitectures=native
SystemCallFilter=~@clock
SystemCallFilter=~@cpu-emulation
SystemCallFilter=~@debug
SystemCallFilter=~@module
SystemCallFilter=~@mount
SystemCallFilter=~@obsolete
SystemCallFilter=~@raw-io
SystemCallFilter=~@reboot
SystemCallFilter=~@resources
SystemCallFilter=~@swap
UMask=0077
[Install]
WantedBy=multi-user.target

View File

@@ -1,7 +1,6 @@
import pytest
import threading
import queue
import socket
from chatmaild.config import read_config
from cmdeploy.cmdeploy import main
@@ -79,24 +78,3 @@ def test_concurrent_logins_same_account(
for _ in conns:
assert login_results.get()
def test_no_vrfy(chatmail_config):
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect((chatmail_config.mail_domain, 25))
banner = sock.recv(1024)
print(banner)
sock.send(b"VRFY wrongaddress@%s\r\n" % (chatmail_config.mail_domain.encode(),))
result = sock.recv(1024)
print(result)
sock.send(b"VRFY echo@%s\r\n" % (chatmail_config.mail_domain.encode(),))
result2 = sock.recv(1024)
print(result2)
assert result[0:10] == result2[0:10]
sock.send(b"VRFY wrongaddress\r\n")
result = sock.recv(1024)
print(result)
sock.send(b"VRFY echo\r\n")
result2 = sock.recv(1024)
print(result2)
assert result[0:10] == result2[0:10] == b"252 2.0.0 "

View File

@@ -42,25 +42,13 @@ def test_reject_forged_from(cmsetup, maildata, gencreds, lp, forgeaddr):
assert "500" in str(e.value)
def test_authenticated_from(cmsetup, maildata):
"""Test that envelope FROM must be the same as login."""
user1, user2, user3 = cmsetup.gen_users(3)
msg = maildata("encrypted.eml", from_addr=user2.addr, to_addr=user3.addr)
with pytest.raises(smtplib.SMTPException) as e:
user1.smtp.sendmail(
from_addr=user2.addr, to_addrs=[user3.addr], msg=msg.as_string()
)
assert e.value.recipients[user3.addr][0] == 553
@pytest.mark.parametrize("from_addr", ["fake@example.org", "fake@testrun.org"])
def test_reject_missing_dkim(cmsetup, maildata, from_addr):
"""Test that emails with missing or wrong DMARC, DKIM, and SPF entries are rejected."""
recipient = cmsetup.gen_users(1)[0]
msg = maildata("plain.eml", from_addr=from_addr, to_addr=recipient.addr).as_string()
with smtplib.SMTP(cmsetup.maildomain, 25) as s:
with pytest.raises(smtplib.SMTPDataError, match="No valid DKIM signature"):
with pytest.raises(smtplib.SMTPDataError, match="missing DKIM signature"):
s.sendmail(from_addr=from_addr, to_addrs=recipient.addr, msg=msg)
@@ -83,18 +71,3 @@ def test_exceed_rate_limit(cmsetup, gencreds, maildata, chatmail_config):
assert b"4.7.1: Too much mail from" in outcome[1]
return
pytest.fail("Rate limit was not exceeded")
def test_expunged(remote, chatmail_config):
outdated_days = int(chatmail_config.delete_mails_after) + 1
find_cmds = [
f"find /home/vmail/mail/{chatmail_config.mail_domain} -path '*/cur/*' -mtime +{outdated_days} -type f",
f"find /home/vmail/mail/{chatmail_config.mail_domain} -path '*/.*/cur/*' -mtime +{outdated_days} -type f",
f"find /home/vmail/mail/{chatmail_config.mail_domain} -path '*/new/*' -mtime +{outdated_days} -type f",
f"find /home/vmail/mail/{chatmail_config.mail_domain} -path '*/.*/new/*' -mtime +{outdated_days} -type f",
f"find /home/vmail/mail/{chatmail_config.mail_domain} -path '*/tmp/*' -mtime +{outdated_days} -type f",
f"find /home/vmail/mail/{chatmail_config.mail_domain} -path '*/.*/tmp/*' -mtime +{outdated_days} -type f",
]
for cmd in find_cmds:
for line in remote.iter_output(cmd):
assert not line

View File

@@ -5,46 +5,6 @@ import random
import pytest
import requests
import ipaddress
import imap_tools
@pytest.fixture
def imap_mailbox(cmfactory):
(ac1,) = cmfactory.get_online_accounts(1)
user = ac1.get_config("addr")
password = ac1.get_config("mail_pw")
mailbox = imap_tools.MailBox(user.split("@")[1])
mailbox.login(user, password)
return mailbox
class TestMetadataTokens:
"Tests that use Metadata extension for storing tokens"
def test_set_get_metadata(self, imap_mailbox):
"set and get metadata token for an account"
client = imap_mailbox.client
client.send(b'a01 SETMETADATA INBOX (/private/devicetoken "1111" )\n')
res = client.readline()
assert b"OK Setmetadata completed" in res
client.send(b"a02 GETMETADATA INBOX /private/devicetoken\n")
res = client.readline()
assert res[:1] == b"*"
res = client.readline().strip().rstrip(b")")
assert res == b"1111"
assert b"Getmetadata completed" in client.readline()
client.send(b'a01 SETMETADATA INBOX (/private/devicetoken "2222" )\n')
res = client.readline()
assert b"OK Setmetadata completed" in res
client.send(b"a02 GETMETADATA INBOX /private/devicetoken\n")
res = client.readline()
assert res[:1] == b"*"
res = client.readline().strip().rstrip(b")")
assert res == b"1111 2222"
assert b"Getmetadata completed" in client.readline()
class TestEndToEndDeltaChat:
@@ -103,7 +63,7 @@ class TestEndToEndDeltaChat:
addr = ac2.get_config("addr").lower()
saved_ok = 0
for line in remote.iter_output("journalctl -n0 -f -u dovecot"):
for line in remote.iter_output("journalctl -f -u dovecot"):
if addr not in line:
# print(line)
continue
@@ -115,10 +75,7 @@ class TestEndToEndDeltaChat:
)
lp.indent("good, message sending failed because quota was exceeded")
return
if (
"stored mail into mailbox 'inbox'" in line
or "saved mail to inbox" in line
):
if "saved mail to inbox" in line:
saved_ok += 1
print(f"{saved_ok}: {line}")
if saved_ok >= num_to_send:
@@ -155,7 +112,7 @@ class TestEndToEndDeltaChat:
lp.sec("ac1 sends a message and ac2 marks it as seen")
chat = ac1.create_chat(ac2)
msg = chat.send_text("hi")
m = ac2._evtracker.wait_next_incoming_message()
m = ac2.wait_next_incoming_message()
m.mark_seen()
# we can only indirectly wait for mark-seen to cause an smtp-error
lp.sec("try to wait for markseen to complete and check error states")
@@ -175,19 +132,7 @@ def test_hide_senders_ip_address(cmfactory):
chat = cmfactory.get_accepted_chat(user1, user2)
chat.send_text("testing submission header cleanup")
user2._evtracker.wait_next_incoming_message()
user2.wait_next_incoming_message()
user2.direct_imap.select_folder("Inbox")
msg = user2.direct_imap.get_all_messages()[0]
assert public_ip not in msg.obj.as_string()
def test_echobot(cmfactory, chatmail_config, lp):
ac = cmfactory.get_online_accounts(1)[0]
lp.sec(f"Send message to echo@{chatmail_config.mail_domain}")
chat = ac.create_chat(f"echo@{chatmail_config.mail_domain}")
text = "hi, I hope you text me back"
chat.send_text(text)
lp.sec("Wait for reply from echobot")
reply = ac._evtracker.wait_next_incoming_message()
assert reply.text == text

View File

@@ -1,6 +1,6 @@
#!/bin/bash
set -e
python3 -m venv --upgrade-deps venv
python3 -m venv venv
venv/bin/pip install -e chatmaild
venv/bin/pip install -e cmdeploy