deploy chatmaild in a virtualenv to make it easier to add dependencies

* create a wwwdev.sh entry point for developing the web part

* rename script

* fix README

* add a note

* don't depend on deltachat python package

* avoid bailing out on jinja2 errors, and provide file-url for instant clickability

* in webdev mode make page auto-refresh every 3 seconds

.github/workflows/ci.yaml

@@ -5,14 +5,27 @@ on:
   push:
 
 jobs:
-  lint:
-    name: Lint
+  tox:
+    name: chatmail tests
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - name: Lint chatmaild
+      - name: run chatmaild tests 
         working-directory: chatmaild
         run: pipx run tox
-      - name: Lint deploy-chatmail
+      - name: run deploy-chatmail offline tests 
         working-directory: deploy-chatmail
         run: pipx run tox
+      - name: run deploy-chatmail offline tests 
+        working-directory: deploy-chatmail
+        run: pipx run tox
+
+  scripts:
+    name: chatmail script invocations 
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: run init.sh 
+        run: ./scripts/init.sh 
+      - name: run test.sh 
+        run: ./scripts/test.sh 

.gitignore

@@ -3,6 +3,11 @@ __pycache__/
 *.py[cod]
 *$py.class
 *.swp
+www/privacy.html*
+www/index.html*
+www/info.html*
+*qr-*.png
+
 
 # C extensions
 *.so
@@ -159,3 +164,5 @@ cython_debug/
 #  and can be added to the global gitignore or merged into this file.  For a more nuclear
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 #.idea/
+
+chatmail.zone

README.md

@@ -1,23 +1,96 @@
-# Chat Mail server configuration
 
-This repository setups a ready-to-go chatmail instance
+<img width="800px" src="www/src/collage-top.png"/>
+
+# Chatmail instances optimized for Delta Chat apps 
+
+This repository helps to setup a ready-to-use chatmail instance
 comprised of a minimal setup of the battle-tested 
-[postfix smtp server](https://www.postfix.org) and [dovecot imap server](https://www.dovecot.org).
+[postfix smtp](https://www.postfix.org) and [dovecot imap](https://www.dovecot.org) services. 
 
-## Getting started 
+The setup is designed and optimized for providing chatmail accounts 
+for use by [Delta Chat apps](https://delta.chat).
 
-1. prepare your local system:
+Chatmail accounts are automatically created by a first login, 
+after which the initially specified password is required for using them. 
+
+## Getting Started deploying your own chatmail instance
+
+1. Prepare your local (presumably Linux) system:
 
     scripts/init.sh 
 
-2. set environment variable to the chatmail domain you want to setup:
+2. Setup a domain with `A` and `AAAA` records for your chatmail server.
+
+3. Set environment variable to the chatmail domain you want to setup:
 
     export CHATMAIL_DOMAIN=c1.testrun.org   # replace with your host
 
-3. run the deploy of the chat mail instance: 
+4. Fill in privacy contact data into the `chatmail.ini` file
+
+5. Deploy the chat mail instance to your chatmail server: 
 
     scripts/deploy.sh 
 
+   This script remotely sets up packages and configures the chatmail provider. 
+
+6. Run `scripts/generate-dns-zone.sh` and 
+   transfer the generated DNS records at your DNS provider
+
+
+### Home page and getting started for users 
+
+The `deploy.sh` script deploys 
+
+- a default `index.html` along with a QR code that users can click to 
+  create accounts on your chatmail provider,
+
+- a default `info.html` that is linked from the home page,
+
+- a default `policy.html` that is linked from the home page. 
+
+All files are generated by the according markdown `.md` file in the `www` directory.
+
+
+### Refining the web pages 
+
+The `scripts/webdev.sh` script supports live development of the chatmail web presence:
+
+``` 
+    scripts/init.sh  # to locally initialize python virtual environments etc. 
+    scripts/webdev.sh
+```
+
+- uses the `www/src/page-layout.html` file for producing html documents
+  from `www/src/*.md` files. 
+
+- continously builds the web presence reading files from `www/src` directory
+  and generating html files and copying assets to the `www/build` directory. 
+
+- Starts a browser window automatically where you can "refresh" as needed. 
+
+Note that this script is not needed for running `scripts/deploy.sh" 
+which deploys the whole chatmail setup remotely. 
+The code that generates the web pages is identical
+which means that `webdev.sh` gives a pretty good preview. 
+
+### Ports
+
+Postfix listens on ports 25 (smtp) and 587 (submission) and 465 (submissions).
+Dovecot listens on ports 143(imap) and 993 (imaps).
+
+Delta Chat will, however, discover all ports and configurations 
+automatically by reading the `autoconfig.xml` file from the chatmail instance. 
+
+
+## Emergency Commands to disable automatic account creation 
+
+If you need to stop account creation,
+e.g. because some script is wildly creating accounts, run:
+
+    touch /etc/chatmail-nocreate
+
+While this file is present, account creation will be blocked. 
+
 
 ## Running tests and benchmarks (offline and online) 
 
@@ -32,28 +105,27 @@ comprised of a minimal setup of the battle-tested
 
     scripts/bench.sh 
 
-## Running tests (offline and online) 
 
-```
-## Dovecot/Postfix configuration
+## Development Background for chatmail instances 
 
-### Ports
+This repository drives the development of "chatmail instances", 
+comprised of minimal setups of 
 
-Postfix listens on ports 25 (smtp) and 587 (submission) and 465 (submissions).
-Dovecot listens on ports 143(imap) and 993 (imaps).
+- [postfix smtp server](https://www.postfix.org) 
+- [dovecot imap server](https://www.dovecot.org) 
 
-## DNS
+as well as two custom services that are integrated with these two: 
 
-For DKIM you must add a DNS entry as found in /etc/opendkim/selector.txt on your chatmail instance.
-The above `scripts/deploy.sh` prints out the DKIM selector and DNS entry you
-need to setup with your DNS provider. 
+- `chatmaild/src/chatmaild/doveauth.py` implements
+  create-on-login account creation semantics and is used
+  by Dovecot during login authentication and by Postfix
+  which in turn uses [Dovecot SASL](https://doc.dovecot.org/configuration_manual/authentication/dict/#complete-example-for-authenticating-via-a-unix-socket)
+  to authenticate users
+  to send mails for them. 
+
+- `chatmaild/src/chatmaild/filtermail.py` prevents 
+  unencrypted e-mail from leaving the chatmail instance
+  and is integrated into postfix's outbound mail pipelines. 
 
-## Emergency Commands
 
-If you need to stop account creation,
-e.g. because some script is wildly creating accounts,
-just run `touch /tmp/nocreate`.
-You can remove the file
-as soon as the attacker was banned
-by different means.
 

chatmail.ini

@@ -0,0 +1,15 @@
+[config]
+
+privacy_postal =
+    Merlinux GmbH, Represented by the managing director H. Krekel,
+    Reichgrafen Str. 20, 79102 Freiburg, Germany
+
+privacy_mail = delta-privacy@merlinux.eu
+
+privacy_pdo =
+    Prof. Dr. Fabian Schmieder, lexICT UG (limited), Ostfeldstr. 49, 30559 Hannover.
+    You can contact him at *delta-privacy@merlinux.eu* (Keyword: DPO)
+
+privacy_supervisor =
+    State Commissioner for Data Protection and Freedom of Information of
+    Baden-Württemberg in 70173 Stuttgart, Germany.

chatmaild/pyproject.toml

@@ -6,21 +6,24 @@ build-backend = "setuptools.build_meta"
 name = "chatmaild"
 version = "0.1"
 dependencies = [
-  "aiosmtpd"
+  "aiosmtpd",
 ]
 
 [project.scripts]
-doveauth-dictproxy = "chatmaild.dictproxy:main"
+doveauth = "chatmaild.doveauth:main"
 filtermail = "chatmaild.filtermail:main"
 
 [tool.pytest.ini_options]
 addopts = "-v -ra --strict-markers"
+log_format = "%(asctime)s %(levelname)s %(message)s"
+log_date_format = "%Y-%m-%d %H:%M:%S"
+log_level = "INFO"
 
 [tool.tox]
 legacy_tox_ini = """
 [tox]
 isolated_build = true
-envlist = lint
+envlist = lint,py
 
 [testenv:lint]
 skipdist = True
@@ -31,4 +34,10 @@ deps =
 commands =
   black --quiet --check --diff src/
   ruff src/
+
+[testenv]
+passenv = CHATMAIL_DOMAIN
+deps = pytest 
+       pdbpp 
+commands = pytest -v -rsXx {posargs: ../tests/chatmaild}
 """

chatmaild/src/chatmaild/database.py

@@ -33,13 +33,6 @@ class Connection:
     def cursor(self):
         return self._sqlconn.cursor()
 
-    def create_user(self, addr: str, password: str):
-        """Create a row in the users table."""
-        self.execute("PRAGMA foreign_keys=on")
-        q = """INSERT INTO users (addr, password, last_login)
-               VALUES (?, ?, ?)"""
-        self.execute(q, (addr, password, int(time.time())))
-
     def get_user(self, addr: str) -> {}:
         """Get a row from the users table."""
         q = "SELECT addr, password, last_login from users WHERE addr = ?"

chatmaild/src/chatmaild/doveauth.py

@@ -1,5 +1,6 @@
 import logging
 import os
+import time
 import sys
 import json
 import crypt
@@ -21,15 +22,29 @@ def encrypt_password(password: str):
     return "{SHA512-CRYPT}" + passhash
 
 
-def create_user(db, user, password):
+def is_allowed_to_create(user, cleartext_password) -> bool:
+    """Return True if user and password are admissable."""
     if os.path.exists(NOCREATE_FILE):
-        logging.warning(
-            f"Didn't create account: {NOCREATE_FILE} exists. Delete the file to enable account creation."
-        )
-        return
-    with db.write_transaction() as conn:
-        conn.create_user(user, password)
-    return dict(home=f"/home/vmail/{user}", uid="vmail", gid="vmail", password=password)
+        logging.warning(f"blocked account creation because {NOCREATE_FILE!r} exists.")
+        return False
+
+    if len(cleartext_password) < 9:
+        logging.warning("Password needs to be at least 9 characters long")
+        return False
+
+    parts = user.split("@")
+    if len(parts) != 2:
+        logging.warning(f"user {user!r} is not a proper e-mail address")
+        return False
+    localpart, domain = parts
+
+    if domain == "nine.testrun.org":
+        # nine.testrun.org policy, username has to be exactly nine chars
+        if len(localpart) != 9:
+            logging.warning(f"localpart {localpart!r} has not exactly nine chars")
+            return False
+
+    return True
 
 
 def get_user_data(db, user):
@@ -45,16 +60,34 @@ def lookup_userdb(db, user):
     return get_user_data(db, user)
 
 
-def lookup_passdb(db, user, password):
-    userdata = get_user_data(db, user)
-    if not userdata:
-        return create_user(db, user, encrypt_password(password))
-    userdata["password"] = userdata["password"].strip()
-    return userdata
+def lookup_passdb(db, user, cleartext_password):
+    with db.write_transaction() as conn:
+        userdata = conn.get_user(user)
+        if userdata:
+            # Update last login time.
+            conn.execute(
+                "UPDATE users SET last_login=? WHERE addr=?", (int(time.time()), user)
+            )
+
+            userdata["uid"] = "vmail"
+            userdata["gid"] = "vmail"
+            return userdata
+        if not is_allowed_to_create(user, cleartext_password):
+            return
+
+        encrypted_password = encrypt_password(cleartext_password)
+        q = """INSERT INTO users (addr, password, last_login)
+               VALUES (?, ?, ?)"""
+        conn.execute(q, (user, encrypted_password, int(time.time())))
+        return dict(
+            home=f"/home/vmail/{user}",
+            uid="vmail",
+            gid="vmail",
+            password=encrypted_password,
+        )
 
 
 def handle_dovecot_request(msg, db, mail_domain):
-    print(f"received msg: {msg!r}", file=sys.stderr)
     short_command = msg[0]
     if short_command == "L":  # LOOKUP
         parts = msg[1:].split("\t")
@@ -72,19 +105,18 @@ def handle_dovecot_request(msg, db, mail_domain):
                     reply_command = "N"
             elif type == "passdb":
                 if user.endswith(f"@{mail_domain}"):
-                    res = lookup_passdb(db, user, password=args[0])
+                    res = lookup_passdb(db, user, cleartext_password=args[0])
                 if res:
                     reply_command = "O"
                 else:
                     reply_command = "N"
-        print(f"res: {res!r}", file=sys.stderr)
         json_res = json.dumps(res) if res else ""
         return f"{reply_command}{json_res}\n"
     return None
 
 
 class ThreadedUnixStreamServer(ThreadingMixIn, UnixStreamServer):
-    pass
+    request_queue_size = 100
 
 
 def main():
@@ -96,15 +128,20 @@ def main():
 
     class Handler(StreamRequestHandler):
         def handle(self):
-            while True:
-                msg = self.rfile.readline().strip().decode()
-                if not msg:
-                    break
-                res = handle_dovecot_request(msg, db, mail_domain)
-                if res:
-                    print(f"sending result: {res!r}", file=sys.stderr)
-                    self.wfile.write(res.encode("ascii"))
-                    self.wfile.flush()
+            try:
+                while True:
+                    msg = self.rfile.readline().strip().decode()
+                    if not msg:
+                        break
+                    res = handle_dovecot_request(msg, db, mail_domain)
+                    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
 
     try:
         os.unlink(socket)

chatmaild/src/chatmaild/doveauth.service.f

@@ -2,7 +2,7 @@
 Description=Dict authentication proxy for dovecot
 
 [Service]
-ExecStart=/usr/local/bin/doveauth-dictproxy /run/dovecot/doveauth.socket vmail /home/vmail/passdb.sqlite
+ExecStart={execpath} /run/dovecot/doveauth.socket vmail /home/vmail/passdb.sqlite
 Restart=always
 RestartSec=30
 

chatmaild/src/chatmaild/filtermail.py

@@ -34,6 +34,42 @@ def check_encrypted(message):
     return True
 
 
+def is_passthrough_recipient(recipient):
+    """Check whether a recipient is configured as passthrough."""
+    passthroughlist = ["privacy@testrun.org"]
+    if recipient in passthroughlist:
+        return True
+    return False
+
+
+def check_mdn(message, envelope):
+    if len(envelope.rcpt_tos) != 1:
+        return False
+
+    for name in ["auto-submitted", "chat-version"]:
+        if not message.get(name):
+            return False
+
+    if message.get_content_type() != "multipart/report":
+        return False
+
+    body = message.get_body()
+    if body.get_content_type() != "text/plain":
+        return False
+
+    if list(body.iter_attachments()) or list(body.iter_parts()):
+        return False
+
+    # even with all mime-structural checks an attacker
+    # could try to abuse the subject or body to contain links or other
+    # annoyance -- we skip on checking subject/body for now as Delta Chat
+    # should evolve to create E2E-encrypted read receipts anyway.
+    # and then MDNs are just encrypted mail and can pass the border
+    # to other instances.
+
+    return True
+
+
 class SMTPController(Controller):
     def factory(self):
         return SMTP(self.handler, **self.SMTP_kwargs)
@@ -82,11 +118,17 @@ def check_DATA(envelope):
     if envelope.mail_from.lower() != from_addr.lower():
         return f"500 Invalid FROM <{from_addr!r}> for <{envelope.mail_from!r}>"
 
+    if not mail_encrypted and check_mdn(message, envelope):
+        return
+
     envelope_from_domain = from_addr.split("@").pop()
     for recipient in envelope.rcpt_tos:
         if envelope.mail_from == recipient:
             # Always allow sending emails to self.
             continue
+        if is_passthrough_recipient(recipient):
+            # Always allow recipients marked as passthrough
+            continue
         res = recipient.split("@")
         if len(res) != 2:
             return f"500 Invalid address <{recipient}>"
@@ -118,7 +160,7 @@ class SendRateLimiter:
 def main():
     args = sys.argv[1:]
     assert len(args) == 1
-    logging.basicConfig(level=logging.INFO)
+    logging.basicConfig(level=logging.WARN)
     loop = asyncio.new_event_loop()
     asyncio.set_event_loop(loop)
     task = asyncmain_beforequeue(port=int(args[0]))

chatmaild/src/chatmaild/filtermail.service.f

@@ -2,7 +2,7 @@
 Description=Chatmail Postfix BeforeQeue filter 
 
 [Service]
-ExecStart=/usr/local/bin/filtermail 10080
+ExecStart={execpath} 10080
 Restart=always
 RestartSec=30
 

chatmaild/src/chatmaild/newemail.py

@@ -0,0 +1,28 @@
+#!/usr/bin/python3
+
+""" CGI script for creating new accounts. """
+
+import json
+import random
+
+mailname_path = "/etc/mailname"
+
+
+def create_newemail_dict(domain):
+    alphanumeric = "abcdefghijklmnopqrstuvwxyz1234567890"
+    user = "".join(random.choices(alphanumeric, k=9))
+    password = "".join(random.choices(alphanumeric, k=12))
+    return dict(email=f"{user}@{domain}", password=f"{password}")
+
+
+def print_new_account():
+    domain = open(mailname_path).read().strip()
+    creds = create_newemail_dict(domain=domain)
+
+    print("Content-Type: application/json")
+    print("")
+    print(json.dumps(creds))
+
+
+if __name__ == "__main__":
+    print_new_account()

chatmaild/src/chatmaild/test_doveauth.py

@@ -1,53 +0,0 @@
-import os
-
-import pytest
-
-import chatmaild.dictproxy
-from .dictproxy import get_user_data, lookup_passdb
-from .database import Database, DBError
-
-
-@pytest.fixture()
-def db(tmpdir):
-    db_path = tmpdir / "passdb.sqlite"
-    print("database path:", db_path)
-    return Database(db_path)
-
-
-def test_basic(db):
-    chatmaild.dictproxy.NOCREATE_FILE = "/tmp/nocreate"
-    if os.path.exists(chatmaild.dictproxy.NOCREATE_FILE):
-        os.remove(chatmaild.dictproxy.NOCREATE_FILE)
-    lookup_passdb(db, "link2xt@c1.testrun.org", "asdf")
-    data = get_user_data(db, "link2xt@c1.testrun.org")
-    assert data
-
-
-def test_dont_overwrite_password_on_wrong_login(db):
-    """Test that logging in with a different password doesn't create a new user"""
-    res = lookup_passdb(db, "newuser1@something.org", "kajdlkajsldk12l3kj1983")
-    assert res["password"]
-    res2 = lookup_passdb(db, "newuser1@something.org", "kajdlqweqwe")
-    # this function always returns a password hash, which is actually compared by dovecot.
-    assert res["password"] == res2["password"]
-
-
-def test_nocreate_file(db):
-    chatmaild.dictproxy.NOCREATE_FILE = "/tmp/nocreate"
-    with open(chatmaild.dictproxy.NOCREATE_FILE, "w+") as f:
-        f.write("")
-    assert os.path.exists(chatmaild.dictproxy.NOCREATE_FILE)
-    lookup_passdb(db, "newuser1@something.org", "kajdlqweqwe")
-    assert not get_user_data(db, "newuser1@something.org")
-    os.remove(chatmaild.dictproxy.NOCREATE_FILE)
-
-
-def test_db_version(db):
-    assert db.get_schema_version() == 1
-
-
-def test_too_high_db_version(db):
-    with db.write_transaction() as conn:
-        conn.execute("PRAGMA user_version=%s;" % (999,))
-    with pytest.raises(DBError):
-        db.ensure_tables()

chatmaild/src/chatmaild/test_filtermail.py

@@ -1,338 +0,0 @@
-from .filtermail import check_encrypted, check_DATA, SendRateLimiter
-from email.parser import BytesParser
-from email import policy
-import pytest
-
-
-def test_reject_forged_from():
-    def makemail(from_addr):
-        return BytesParser(policy=policy.default).parsebytes(
-            "\r\n".join(
-                [
-                    f"From: <{from_addr}",
-                    "To: <barbaz@c3.testrun.org>",
-                    "Date: Sun, 15 Oct 2023 16:41:44 +0000",
-                    "Message-ID: <Mr.3gckbNy5bch.uK3Hd2Ws6-w@c2.testrun.org>",
-                    "References: <Mr.3gckbNy5bch.uK3Hd2Ws6-w@c2.testrun.org>",
-                    "Chat-Version: 1.0",
-                    "MIME-Version: 1.0",
-                    "Content-Type: text/plain; charset=utf-8; format=flowed; delsp=no",
-                    "",
-                    "Hi!",
-                    "",
-                    "",
-                ]
-            ).encode()
-        )
-
-    class envelope:
-        mail_from = "bob@c3.testrun.org"
-        rcpt_tos = ["somebody@c3.testrun.org"]
-
-    # test that the filter lets good mail through
-    envelope.content = makemail(envelope.mail_from).as_bytes()
-    assert not check_DATA(envelope=envelope)
-
-    # test that the filter rejects forged mail
-    envelope.content = makemail("forged@c3.testrun.org").as_bytes()
-    error = check_DATA(envelope=envelope)
-    assert "500" in error
-
-
-def test_filtermail():
-    def check_encrypted_bstr(content):
-        message = BytesParser(policy=policy.default).parsebytes(content)
-        return check_encrypted(message)
-
-    assert not check_encrypted_bstr(b"foo")
-
-    assert not check_encrypted_bstr(
-        "\r\n".join(
-            [
-                "Subject: =?utf-8?q?Message_from_foobar=40c2=2Etestrun=2Eorg?=",
-                "Chat-Disposition-Notification-To: foobar@c2.testrun.org",
-                "Chat-User-Avatar: 0",
-                "From: <foobar@c2.testrun.org>",
-                "To: <barbaz@c2.testrun.org>",
-                "Date: Sun, 15 Oct 2023 16:41:44 +0000",
-                "Message-ID: <Mr.3gckbNy5bch.uK3Hd2Ws6-w@c2.testrun.org>",
-                "References: <Mr.3gckbNy5bch.uK3Hd2Ws6-w@c2.testrun.org>",
-                "Chat-Version: 1.0",
-                "Autocrypt: addr=foobar@c2.testrun.org; prefer-encrypt=mutual;",
-                "\tkeydata=xjMEZSrw3hYJKwYBBAHaRw8BAQdAiEKNQFU28c6qsx4vo/JHdt73RXdjMOmByf/XsGiJ7m",
-                "\tnNFzxmb29iYXJAYzIudGVzdHJ1bi5vcmc+wosEEBYIADMCGQEFAmUq8N4CGwMECwkIBwYVCAkKCwID",
-                "\tFgIBFiEEGil0OvTIa6RngmCLUYNnEa9leJAACgkQUYNnEa9leJCX3gEAhm0MehE5byBBU1avPczr/I",
-                "\tHjNLht7Qf6++mAhlJmtDcA/0C8VYJhsUpmiDjuZaMDWNv4FO2BJG6LH7gSm6n7ClMJzjgEZSrw3hIK",
-                "\tKwYBBAGXVQEFAQEHQAxGG/QW0owCfMp1A+vXEMwgzWcBpNFr58kX2eXuPpM6AwEIB8J4BBgWCAAgBQ",
-                "\tJlKvDeAhsMFiEEGil0OvTIa6RngmCLUYNnEa9leJAACgkQUYNnEa9leJDg1gEAwLf8KDoAAKyYgjyI",
-                "\tvYvO9VEgBni1C4Xx1VjcaEmlDK8BALoFuUCK+enw76TtDcAUKhlhUiM6SDRExkS4Nskp/BcK",
-                "MIME-Version: 1.0",
-                "Content-Type: text/plain; charset=utf-8; format=flowed; delsp=no",
-                "",
-                "Hi!",
-                "",
-                "",
-            ]
-        ).encode()
-    )
-
-    assert not check_encrypted_bstr(
-        "\r\n".join(
-            [
-                "Subject: =?utf-8?q?Message_from_foobar=40c2=2Etestrun=2Eorg?=",
-                "Chat-Disposition-Notification-To: foobar@c2.testrun.org",
-                "Chat-User-Avatar: 0",
-                "From: <foobar@c2.testrun.org>",
-                "To: <barbaz@c2.testrun.org>",
-                "Date: Sun, 15 Oct 2023 16:41:44 +0000",
-                "Message-ID: <Mr.3gckbNy5bch.uK3Hd2Ws6-w@c2.testrun.org>",
-                "References: <Mr.3gckbNy5bch.uK3Hd2Ws6-w@c2.testrun.org>",
-                "Chat-Version: 1.0",
-                "Autocrypt: addr=foobar@c2.testrun.org; prefer-encrypt=mutual;",
-                "\tkeydata=xjMEZSrw3hYJKwYBBAHaRw8BAQdAiEKNQFU28c6qsx4vo/JHdt73RXdjMOmByf/XsGiJ7m",
-                "\tnNFzxmb29iYXJAYzIudGVzdHJ1bi5vcmc+wosEEBYIADMCGQEFAmUq8N4CGwMECwkIBwYVCAkKCwID",
-                "\tFgIBFiEEGil0OvTIa6RngmCLUYNnEa9leJAACgkQUYNnEa9leJCX3gEAhm0MehE5byBBU1avPczr/I",
-                "\tHjNLht7Qf6++mAhlJmtDcA/0C8VYJhsUpmiDjuZaMDWNv4FO2BJG6LH7gSm6n7ClMJzjgEZSrw3hIK",
-                "\tKwYBBAGXVQEFAQEHQAxGG/QW0owCfMp1A+vXEMwgzWcBpNFr58kX2eXuPpM6AwEIB8J4BBgWCAAgBQ",
-                "\tJlKvDeAhsMFiEEGil0OvTIa6RngmCLUYNnEa9leJAACgkQUYNnEa9leJDg1gEAwLf8KDoAAKyYgjyI",
-                "\tvYvO9VEgBni1C4Xx1VjcaEmlDK8BALoFuUCK+enw76TtDcAUKhlhUiM6SDRExkS4Nskp/BcK",
-                "MIME-Version: 1.0",
-                "Content-Type: text/plain; charset=utf-8; format=flowed; delsp=no",
-                "",
-                "Hi!",
-                "",
-                "",
-            ]
-        ).encode()
-    )
-
-    # https://xkcd.com/1181/
-    assert not check_encrypted_bstr(
-        "\r\n".join(
-            [
-                "Subject: =?utf-8?q?Message_from_foobar=40c2=2Etestrun=2Eorg?=",
-                "Chat-Disposition-Notification-To: foobar@c2.testrun.org",
-                "Chat-User-Avatar: 0",
-                "From: <foobar@c2.testrun.org>",
-                "To: <barbaz@c2.testrun.org>",
-                "Date: Sun, 15 Oct 2023 16:41:44 +0000",
-                "Message-ID: <Mr.3gckbNy5bch.uK3Hd2Ws6-w@c2.testrun.org>",
-                "References: <Mr.3gckbNy5bch.uK3Hd2Ws6-w@c2.testrun.org>",
-                "Chat-Version: 1.0",
-                "Autocrypt: addr=foobar@c2.testrun.org; prefer-encrypt=mutual;",
-                "\tkeydata=xjMEZSrw3hYJKwYBBAHaRw8BAQdAiEKNQFU28c6qsx4vo/JHdt73RXdjMOmByf/XsGiJ7m",
-                "\tnNFzxmb29iYXJAYzIudGVzdHJ1bi5vcmc+wosEEBYIADMCGQEFAmUq8N4CGwMECwkIBwYVCAkKCwID",
-                "\tFgIBFiEEGil0OvTIa6RngmCLUYNnEa9leJAACgkQUYNnEa9leJCX3gEAhm0MehE5byBBU1avPczr/I",
-                "\tHjNLht7Qf6++mAhlJmtDcA/0C8VYJhsUpmiDjuZaMDWNv4FO2BJG6LH7gSm6n7ClMJzjgEZSrw3hIK",
-                "\tKwYBBAGXVQEFAQEHQAxGG/QW0owCfMp1A+vXEMwgzWcBpNFr58kX2eXuPpM6AwEIB8J4BBgWCAAgBQ",
-                "\tJlKvDeAhsMFiEEGil0OvTIa6RngmCLUYNnEa9leJAACgkQUYNnEa9leJDg1gEAwLf8KDoAAKyYgjyI",
-                "\tvYvO9VEgBni1C4Xx1VjcaEmlDK8BALoFuUCK+enw76TtDcAUKhlhUiM6SDRExkS4Nskp/BcK",
-                "MIME-Version: 1.0",
-                "Content-Type: text/plain; charset=utf-8; format=flowed; delsp=no",
-                "",
-                "-----BEGIN PGP MESSAGE-----",
-                "Hi!",
-                "-----END PGP MESSAGE-----",
-                "",
-                "",
-            ]
-        ).encode()
-    )
-
-    assert check_encrypted_bstr(
-        "\r\n".join(
-            [
-                "Subject: ...",
-                "From: <barbaz@c2.testrun.org>",
-                "To: <foobar@c2.testrun.org>",
-                "Date: Sun, 15 Oct 2023 16:43:21 +0000",
-                "Message-ID: <Mr.UVyJWZmkCKM.hGzNc6glBE_@c2.testrun.org>",
-                "In-Reply-To: <Mr.MvmCz-GQbi_.6FGRkhDf05c@c2.testrun.org>",
-                "References: <Mr.3gckbNy5bch.uK3Hd2Ws6-w@c2.testrun.org>",
-                "\t<Mr.MvmCz-GQbi_.6FGRkhDf05c@c2.testrun.org>",
-                "Chat-Version: 1.0",
-                "Autocrypt: addr=barbaz@c2.testrun.org; prefer-encrypt=mutual;",
-                "\tkeydata=xjMEZSwWjhYJKwYBBAHaRw8BAQdAQBEhqeJh0GueHB6kF/DUQqYCxARNBVokg/AzT+7LqH",
-                "\trNFzxiYXJiYXpAYzIudGVzdHJ1bi5vcmc+wosEEBYIADMCGQEFAmUsFo4CGwMECwkIBwYVCAkKCwID",
-                "\tFgIBFiEEFTfUNvVnY3b9F7yHnmme1PfUhX8ACgkQnmme1PfUhX9A4AEAnHWHp49eBCMHK5t66gYPiW",
-                "\tXQuB1mwUjzGfYWB+0RXUoA/0xcQ3FbUNlGKW7Blp6eMFfViv6Mv2d3kNSXACB6nmcMzjgEZSwWjhIK",
-                "\tKwYBBAGXVQEFAQEHQBpY5L2M1XHo0uxf8SX1wNLBp/OVvidoWHQF2Jz+kJsUAwEIB8J4BBgWCAAgBQ",
-                "\tJlLBaOAhsMFiEEFTfUNvVnY3b9F7yHnmme1PfUhX8ACgkQnmme1PfUhX/INgEA37AJaNvruYsJVanP",
-                "\tIXnYw4CKd55UAwl8Zcy+M2diAbkA/0fHHcGV4r78hpbbL1Os52DPOdqYQRauIeJUeG+G6bQO",
-                "MIME-Version: 1.0",
-                'Content-Type: multipart/encrypted; protocol="application/pgp-encrypted";',
-                '\tboundary="YFrteb74qSXmggbOxZL9dRnhymywAi"',
-                "",
-                "",
-                "--YFrteb74qSXmggbOxZL9dRnhymywAi",
-                "Content-Description: PGP/MIME version identification",
-                "Content-Type: application/pgp-encrypted",
-                "",
-                "Version: 1",
-                "",
-                "",
-                "--YFrteb74qSXmggbOxZL9dRnhymywAi",
-                "Content-Description: OpenPGP encrypted message",
-                'Content-Disposition: inline; filename="encrypted.asc";',
-                'Content-Type: application/octet-stream; name="encrypted.asc"',
-                "",
-                "-----BEGIN PGP MESSAGE-----",
-                "",
-                "wU4DhW3gBZ/VvCYSAQdA8bMs2spwbKdGjVsL1ByPkNrqD7frpB73maeL6I6SzDYg",
-                "O5G53tv339RdKq3WRcCtEEvxjHlUx2XNwXzC04BpmfvBTgNfPUyLDzjXnxIBB0Ae",
-                "8ymwGvXMCCimHXN0Dg8Ui62KOi03h0UgheoHWovJSCDF4CKre/xtFr3nL7lq/PKI",
-                "JsjVNz7/RK9FSXF6WwfONtLCyQGEuVAsB/KXfCBEyfKhaMwGHvhujRidGW5uV1no",
-                "lMGl3ODmo29Lgeu2uSE7EpJRZoe6hU6ddmBkqxax61ZtkaFlGFFpdo2K8balNNdz",
-                "ZsJ/9mmI9x3oOJ4/l1nhQbUO9ADbs7gJhFdV5Qkp30b5fCI7bU+aoe1ccBbLe/WM",
-                "YUty1PqcuQT7XjA+XmYuL261tvW8pBetT+i33/E2d8PzzYt2IuK9qeevyS+yxdwA",
-                "kfwejFWzzsUlJaDxs1x4XOxkMgSj+jo+g12dFOb7fyClsAnq23iDb8AuaT/BScAI",
-                "+lO+gher69+6LmM7VGHLG5k762J1jTaQCaKt1s8TAWV99Eo4491vL6fyvk3l/Cfg",
-                "RXSwiWFgj19Pn0Rq7CD9v22UE2vdUMBTcV4aw79mClk1YQ23jbF0y5DCjPdJ62Zo",
-                "tskBgFt3NoWV80jZ76zIBLrrjLwCCll8JjJtFwSkt2GX5RFBsVa4A8IDht9RtEk7",
-                "rrHgbSZQfkauEi/mH3/6CDZoLqSHudUZ7d4MaJwun1TkFYGe2ORwGJd4OBj3oGJp",
-                "H8YBwCpk///L/fKjX0Gg3M8nrpM4wrRFhPKidAgO/kcm25X4+ZHlVkWBTCt5RWKI",
-                "fHh6oLDZCqCfcgMkE1KKmwfIHaUkhq5BPRigwy6i5dh1DM4+1UCLh3dxzVbqE9b9",
-                "61NB19nXdRtDA2sOUnj9ve6m/wEPyCb6/zBQZqvCBYb1/AjdXpUrFT+DbpfyxaXN",
-                "XfhDVb5mNqNM/IVj0V5fvTc6vOfYbzQtPm10H+FdWWfb+rJRfyC3MA2w2IqstFe3",
-                "w3bu2iE6CQvSqRvge+ZqLKt/NqYwOURiUmpuklbl3kPJ97+mfKWoiqk8Iz1VY+bb",
-                "NMUC7aoGv+jcoj+WS6PYO8N6BeRVUUB3ZJSf8nzjgxm1/BcM+UD3BPrlhT11ODRs",
-                "baifGbprMWwt3dhb8cQgRT8GPdpO1OsDkzL6iikMjLHWWiA99GV6ruiHsIPw6boW",
-                "A6/uSOskbDHOROotKmddGTBd0iiHXAoQsJFt1ZjUkt6EHrgWs+GAvrvKpXs1mrz8",
-                "uj3GwEFrHS+Xuf2UDgpszYT3hI2cL/kUtGakVR7m7vVMZqXBUbZdGAEb1PZNPwsI",
-                "E4aMK02+EVB+tSN4Fzj99N2YD0inVYt+oPjr2tHhUS6aSGBNS/48Ki47DOg4Sxkn",
-                "lkOWnEbCD+XTnbDd",
-                "=agR5",
-                "-----END PGP MESSAGE-----",
-                "",
-                "",
-                "--YFrteb74qSXmggbOxZL9dRnhymywAi--",
-                "",
-                "",
-            ]
-        ).encode()
-    )
-
-    assert not check_encrypted_bstr(
-        "\r\n".join(
-            [
-                "Subject: Buy Penis Enlargement at www.malicious-domain.com",
-                "From: <barbaz@c2.testrun.org>",
-                "To: <foobar@c2.testrun.org>",
-                "Date: Sun, 15 Oct 2023 16:43:21 +0000",
-                "Message-ID: <Mr.UVyJWZmkCKM.hGzNc6glBE_@c2.testrun.org>",
-                "In-Reply-To: <Mr.MvmCz-GQbi_.6FGRkhDf05c@c2.testrun.org>",
-                "References: <Mr.3gckbNy5bch.uK3Hd2Ws6-w@c2.testrun.org>",
-                "\t<Mr.MvmCz-GQbi_.6FGRkhDf05c@c2.testrun.org>",
-                "Chat-Version: 1.0",
-                "Autocrypt: addr=barbaz@c2.testrun.org; prefer-encrypt=mutual;",
-                "\tkeydata=xjMEZSwWjhYJKwYBBAHaRw8BAQdAQBEhqeJh0GueHB6kF/DUQqYCxARNBVokg/AzT+7LqH",
-                "\trNFzxiYXJiYXpAYzIudGVzdHJ1bi5vcmc+wosEEBYIADMCGQEFAmUsFo4CGwMECwkIBwYVCAkKCwID",
-                "\tFgIBFiEEFTfUNvVnY3b9F7yHnmme1PfUhX8ACgkQnmme1PfUhX9A4AEAnHWHp49eBCMHK5t66gYPiW",
-                "\tXQuB1mwUjzGfYWB+0RXUoA/0xcQ3FbUNlGKW7Blp6eMFfViv6Mv2d3kNSXACB6nmcMzjgEZSwWjhIK",
-                "\tKwYBBAGXVQEFAQEHQBpY5L2M1XHo0uxf8SX1wNLBp/OVvidoWHQF2Jz+kJsUAwEIB8J4BBgWCAAgBQ",
-                "\tJlLBaOAhsMFiEEFTfUNvVnY3b9F7yHnmme1PfUhX8ACgkQnmme1PfUhX/INgEA37AJaNvruYsJVanP",
-                "\tIXnYw4CKd55UAwl8Zcy+M2diAbkA/0fHHcGV4r78hpbbL1Os52DPOdqYQRauIeJUeG+G6bQO",
-                "MIME-Version: 1.0",
-                'Content-Type: multipart/encrypted; protocol="application/pgp-encrypted";',
-                '\tboundary="YFrteb74qSXmggbOxZL9dRnhymywAi"',
-                "",
-                "",
-                "--YFrteb74qSXmggbOxZL9dRnhymywAi",
-                "Content-Description: PGP/MIME version identification",
-                "Content-Type: application/pgp-encrypted",
-                "",
-                "Version: 1",
-                "",
-                "",
-                "--YFrteb74qSXmggbOxZL9dRnhymywAi",
-                "Content-Description: OpenPGP encrypted message",
-                'Content-Disposition: inline; filename="encrypted.asc";',
-                'Content-Type: application/octet-stream; name="encrypted.asc"',
-                "",
-                "-----BEGIN PGP MESSAGE-----",
-                "",
-                "wU4DhW3gBZ/VvCYSAQdA8bMs2spwbKdGjVsL1ByPkNrqD7frpB73maeL6I6SzDYg",
-                "O5G53tv339RdKq3WRcCtEEvxjHlUx2XNwXzC04BpmfvBTgNfPUyLDzjXnxIBB0Ae",
-                "8ymwGvXMCCimHXN0Dg8Ui62KOi03h0UgheoHWovJSCDF4CKre/xtFr3nL7lq/PKI",
-                "JsjVNz7/RK9FSXF6WwfONtLCyQGEuVAsB/KXfCBEyfKhaMwGHvhujRidGW5uV1no",
-                "lMGl3ODmo29Lgeu2uSE7EpJRZoe6hU6ddmBkqxax61ZtkaFlGFFpdo2K8balNNdz",
-                "ZsJ/9mmI9x3oOJ4/l1nhQbUO9ADbs7gJhFdV5Qkp30b5fCI7bU+aoe1ccBbLe/WM",
-                "YUty1PqcuQT7XjA+XmYuL261tvW8pBetT+i33/E2d8PzzYt2IuK9qeevyS+yxdwA",
-                "kfwejFWzzsUlJaDxs1x4XOxkMgSj+jo+g12dFOb7fyClsAnq23iDb8AuaT/BScAI",
-                "+lO+gher69+6LmM7VGHLG5k762J1jTaQCaKt1s8TAWV99Eo4491vL6fyvk3l/Cfg",
-                "RXSwiWFgj19Pn0Rq7CD9v22UE2vdUMBTcV4aw79mClk1YQ23jbF0y5DCjPdJ62Zo",
-                "tskBgFt3NoWV80jZ76zIBLrrjLwCCll8JjJtFwSkt2GX5RFBsVa4A8IDht9RtEk7",
-                "rrHgbSZQfkauEi/mH3/6CDZoLqSHudUZ7d4MaJwun1TkFYGe2ORwGJd4OBj3oGJp",
-                "H8YBwCpk///L/fKjX0Gg3M8nrpM4wrRFhPKidAgO/kcm25X4+ZHlVkWBTCt5RWKI",
-                "fHh6oLDZCqCfcgMkE1KKmwfIHaUkhq5BPRigwy6i5dh1DM4+1UCLh3dxzVbqE9b9",
-                "61NB19nXdRtDA2sOUnj9ve6m/wEPyCb6/zBQZqvCBYb1/AjdXpUrFT+DbpfyxaXN",
-                "XfhDVb5mNqNM/IVj0V5fvTc6vOfYbzQtPm10H+FdWWfb+rJRfyC3MA2w2IqstFe3",
-                "w3bu2iE6CQvSqRvge+ZqLKt/NqYwOURiUmpuklbl3kPJ97+mfKWoiqk8Iz1VY+bb",
-                "NMUC7aoGv+jcoj+WS6PYO8N6BeRVUUB3ZJSf8nzjgxm1/BcM+UD3BPrlhT11ODRs",
-                "baifGbprMWwt3dhb8cQgRT8GPdpO1OsDkzL6iikMjLHWWiA99GV6ruiHsIPw6boW",
-                "A6/uSOskbDHOROotKmddGTBd0iiHXAoQsJFt1ZjUkt6EHrgWs+GAvrvKpXs1mrz8",
-                "uj3GwEFrHS+Xuf2UDgpszYT3hI2cL/kUtGakVR7m7vVMZqXBUbZdGAEb1PZNPwsI",
-                "E4aMK02+EVB+tSN4Fzj99N2YD0inVYt+oPjr2tHhUS6aSGBNS/48Ki47DOg4Sxkn",
-                "lkOWnEbCD+XTnbDd",
-                "=agR5",
-                "-----END PGP MESSAGE-----",
-                "",
-                "",
-                "--YFrteb74qSXmggbOxZL9dRnhymywAi--",
-                "",
-                "",
-            ]
-        ).encode()
-    )
-
-    assert not check_encrypted_bstr(
-        "\r\n".join(
-            [
-                "Subject: Message opened",
-                "From: <barbaz@c2.testrun.org>",
-                "To: <foobar@c2.testrun.org>",
-                "Date: Sun, 15 Oct 2023 16:43:25 +0000",
-                "Message-ID: <Mr.78MWtlV7RAi.goCFzBhCYfy@c2.testrun.org>",
-                "Auto-Submitted: auto-replied",
-                "Chat-Version: 1.0",
-                "MIME-Version: 1.0",
-                "Content-Type: multipart/report; report-type=disposition-notification;",
-                '\tboundary="Gl92xgZjOShJ5PGHntqYkoo2OK2Dvi"',
-                "",
-                "",
-                "--Gl92xgZjOShJ5PGHntqYkoo2OK2Dvi",
-                "Content-Type: text/plain; charset=utf-8; format=flowed; delsp=no",
-                "",
-                'The "Hi!" message you sent was displayed on the screen of the recipient.',
-                "",
-                "This is no guarantee the content was read.",
-                "",
-                "",
-                "--Gl92xgZjOShJ5PGHntqYkoo2OK2Dvi",
-                "Content-Type: message/disposition-notification",
-                "",
-                "Reporting-UA: Delta Chat 1.124.1",
-                "Original-Recipient: rfc822;barbaz@c2.testrun.org",
-                "Final-Recipient: rfc822;barbaz@c2.testrun.org",
-                "Original-Message-ID: <Mr.MvmCz-GQbi_.6FGRkhDf05c@c2.testrun.org>",
-                "Disposition: manual-action/MDN-sent-automatically; displayed",
-                "",
-                "",
-                "--Gl92xgZjOShJ5PGHntqYkoo2OK2Dvi--",
-                "",
-                "",
-            ]
-        ).encode()
-    )
-
-
-def test_send_rate_limiter():
-    limiter = SendRateLimiter()
-    for i in range(100):
-        if limiter.is_sending_allowed("some@example.org"):
-            if i <= SendRateLimiter.MAX_USER_SEND_PER_MINUTE:
-                continue
-            pytest.fail("limiter didn't work")
-        else:
-            assert i == SendRateLimiter.MAX_USER_SEND_PER_MINUTE + 1
-            break

deploy-chatmail/pyproject.toml

@@ -7,6 +7,9 @@ name = "deploy-chatmail"
 version = "0.1"
 dependencies = [
   "pyinfra",
+  "pillow",
+  "qrcode",
+  "markdown",
 ]
 
 [tool.pytest.ini_options]

deploy-chatmail/src/deploy_chatmail/__init__.py

@@ -1,62 +1,102 @@
 """
 Chat Mail pyinfra deploy.
 """
+import sys
 import importlib.resources
+import subprocess
+import shutil
+import io
+import configparser
 from pathlib import Path
 
-from pyinfra import host, logger
-from pyinfra.operations import apt, files, server, systemd, python
+from pyinfra import host
+from pyinfra.operations import apt, files, server, systemd, pip
 from pyinfra.facts.files import File
+from pyinfra.facts.systemd import SystemdEnabled
 from .acmetool import deploy_acmetool
 
 
-def _install_chatmaild() -> None:
-    chatmaild_filename = "chatmaild-0.1.tar.gz"
-    chatmaild_path = importlib.resources.files(__package__).joinpath(
-        f"../../../dist/{chatmaild_filename}"
+def _build_chatmaild(dist_dir) -> None:
+    dist_dir = Path(dist_dir).resolve()
+    if dist_dir.exists():
+        shutil.rmtree(dist_dir)
+    dist_dir.mkdir()
+    subprocess.check_output(
+        [sys.executable, "-m", "build", "-n"]
+        + ["--sdist", "chatmaild", "--outdir", str(dist_dir)]
     )
-    remote_path = f"/tmp/{chatmaild_filename}"
-    if Path(str(chatmaild_path)).exists():
+    entries = list(dist_dir.iterdir())
+    assert len(entries) == 1
+    return entries[0]
+
+
+def _install_remote_venv_with_chatmaild() -> None:
+    dist_file = _build_chatmaild(dist_dir=Path("chatmaild/dist"))
+    remote_base_dir = "/usr/local/lib/chatmaild"
+    remote_dist_file = f"{remote_base_dir}/dist/{dist_file.name}"
+    remote_venv_dir = f"{remote_base_dir}/venv"
+    root_owned = dict(user="root", group="root", mode="644")
+
+    apt.packages(
+        name="apt install python3-virtualenv",
+        packages=["python3-virtualenv"],
+    )
+
+    files.put(
+        name="Upload chatmaild source package",
+        src=dist_file.open("rb"),
+        dest=remote_dist_file,
+        create_remote_dir=True,
+        **root_owned,
+    )
+
+    pip.virtualenv(
+        name=f"chatmaild virtualenv {remote_venv_dir}",
+        path=remote_venv_dir,
+        always_copy=True,
+    )
+
+    server.shell(
+        name=f"forced pip-install {dist_file.name}",
+        commands=[
+            f"{remote_venv_dir}/bin/pip install --force-reinstall {remote_dist_file}"
+        ],
+    )
+
+    # disable legacy doveauth-dictproxy.service
+    if host.get_fact(SystemdEnabled).get("doveauth-dictproxy.service"):
+        systemd.service(
+            name="Disable legacy doveauth-dictproxy.service",
+            service="doveauth-dictproxy.service",
+            running=False,
+            enabled=False,
+        )
+
+    # install systemd units
+
+    for fn in (
+        "doveauth",
+        "filtermail",
+    ):
+        execpath = f"{remote_venv_dir}/bin/{fn}"
+        source_path = importlib.resources.files("chatmaild").joinpath(f"{fn}.service.f")
+        content = source_path.read_text().format(execpath=execpath).encode()
+
         files.put(
-            name="Upload chatmaild source package",
-            src=chatmaild_path.open("rb"),
-            dest=remote_path,
+            name=f"Upload {fn}.service",
+            src=io.BytesIO(content),
+            dest=f"/etc/systemd/system/{fn}.service",
+            **root_owned,
         )
-
-        apt.packages(
-            name="apt install python3-aiosmtpd",
-            packages=["python3-aiosmtpd", "python3-pip"],
+        systemd.service(
+            name=f"Setup {fn} service",
+            service=f"{fn}.service",
+            running=True,
+            enabled=True,
+            restarted=True,
+            daemon_reload=True,
         )
 
-        # --no-deps because aiosmtplib is installed with `apt`.
-        server.shell(
-            name="install chatmaild with pip",
-            commands=[f"pip install --break-system-packages {remote_path}"],
-        )
-
-        for fn in (
-            "doveauth-dictproxy",
-            "filtermail",
-        ):
-            files.put(
-                name=f"Upload {fn}.service",
-                src=importlib.resources.files("chatmaild")
-                .joinpath(f"{fn}.service")
-                .open("rb"),
-                dest=f"/etc/systemd/system/{fn}.service",
-                user="root",
-                group="root",
-                mode="644",
-            )
-            systemd.service(
-                name=f"Setup {fn} service",
-                service=f"{fn}.service",
-                running=True,
-                enabled=True,
-                restarted=True,
-                daemon_reload=True,
-            )
-
 
 def _configure_opendkim(domain: str, dkim_selector: str) -> bool:
     """Configures OpenDKIM"""
@@ -70,6 +110,36 @@ def _configure_opendkim(domain: str, dkim_selector: str) -> bool:
         mode="644",
         config={"domain_name": domain, "opendkim_selector": dkim_selector},
     )
+    need_restart |= main_config.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",
@@ -90,7 +160,43 @@ def _configure_opendkim(domain: str, dkim_selector: str) -> bool:
             _sudo_user="opendkim",
         )
 
-    need_restart |= main_config.changed
+    return need_restart
+
+
+def _install_mta_sts_daemon() -> bool:
+    need_restart = False
+
+    config = files.put(
+        name="upload postfix-mta-sts-resolver config",
+        src=importlib.resources.files(__package__).joinpath(
+            "postfix/mta-sts-daemon.yml"
+        ),
+        dest="/etc/mta-sts-daemon.yml",
+        user="root",
+        group="root",
+        mode="644",
+    )
+    need_restart |= config.changed
+
+    server.shell(
+        name="install postfix-mta-sts-resolver with pip",
+        commands=[
+            "python3 -m venv /usr/local/lib/postfix-mta-sts-resolver",
+            "/usr/local/lib/postfix-mta-sts-resolver/bin/pip install postfix-mta-sts-resolver",
+        ],
+    )
+
+    systemd_unit = files.put(
+        name="upload mta-sts-daemon systemd unit",
+        src=importlib.resources.files(__package__).joinpath(
+            "postfix/mta-sts-daemon.service"
+        ),
+        dest="/etc/systemd/system/mta-sts-daemon.service",
+        user="root",
+        group="root",
+        mode="644",
+    )
+    need_restart |= systemd_unit.changed
 
     return need_restart
 
@@ -155,6 +261,17 @@ def _configure_dovecot(mail_server: str, debug: bool = False) -> bool:
         mode="644",
     )
 
+    # as per https://doc.dovecot.org/configuration_manual/os/
+    # it is recommended to set the following inotify limits
+    for name in ("max_user_instances", "max_user_watches"):
+        key = f"fs.inotify.{name}"
+        server.sysctl(
+            name=f"Change {key}",
+            key=key,
+            value=65535,
+            persist=True,
+        )
+
     return need_restart
 
 
@@ -163,7 +280,7 @@ def _configure_nginx(domain: str, debug: bool = False) -> bool:
     need_restart = False
 
     main_config = files.template(
-        src=importlib.resources.files(__package__).joinpath("nginx.conf.j2"),
+        src=importlib.resources.files(__package__).joinpath("nginx/nginx.conf.j2"),
         dest="/etc/nginx/nginx.conf",
         user="root",
         group="root",
@@ -173,7 +290,7 @@ def _configure_nginx(domain: str, debug: bool = False) -> bool:
     need_restart |= main_config.changed
 
     autoconfig = files.template(
-        src=importlib.resources.files(__package__).joinpath("autoconfig.xml.j2"),
+        src=importlib.resources.files(__package__).joinpath("nginx/autoconfig.xml.j2"),
         dest="/var/www/html/.well-known/autoconfig/mail/config-v1.1.xml",
         user="root",
         group="root",
@@ -182,9 +299,53 @@ def _configure_nginx(domain: str, debug: bool = False) -> bool:
     )
     need_restart |= autoconfig.changed
 
+    mta_sts_config = files.template(
+        src=importlib.resources.files(__package__).joinpath("nginx/mta-sts.txt.j2"),
+        dest="/var/www/html/.well-known/mta-sts.txt",
+        user="root",
+        group="root",
+        mode="644",
+        config={"domain_name": domain},
+    )
+    need_restart |= mta_sts_config.changed
+
+    # install CGI newemail script
+    #
+    cgi_dir = "/usr/lib/cgi-bin"
+    files.directory(
+        name=f"Ensure {cgi_dir} exists",
+        path=cgi_dir,
+        user="root",
+        group="root",
+    )
+
+    files.put(
+        name="Upload cgi newemail.py script",
+        src=importlib.resources.files("chatmaild").joinpath("newemail.py").open("rb"),
+        dest=f"{cgi_dir}/newemail.py",
+        user="root",
+        group="root",
+        mode="755",
+    )
+
     return need_restart
 
 
+def get_ini_settings(mail_domain, inipath):
+    parser = configparser.ConfigParser()
+    parser.read(inipath)
+    settings = {key: value.strip() for (key, value) in parser["config"].items()}
+    if mail_domain != "testrun.org" and not mail_domain.endswith(".testrun.org"):
+        for value in settings.values():
+            value = value.lower()
+            if "merlinux" in value or "schmieder" in value or "@testrun.org" in value:
+                raise ValueError(
+                    f"please set your own privacy contacts/addresses in {inipath}"
+                )
+    settings["mail_domain"] = mail_domain
+    return settings
+
+
 def deploy_chatmail(mail_domain: str, mail_server: str, dkim_selector: str) -> None:
     """Deploy a chat-mail instance.
 
@@ -192,6 +353,7 @@ def deploy_chatmail(mail_domain: str, mail_server: str, dkim_selector: str) -> N
     :param mail_server: the DNS name under which your mail server is reachable
     :param dkim_selector:
     """
+    from .www import build_webpages
 
     apt.update(name="apt update", cache_time=24 * 3600)
     server.group(name="Create vmail group", group="vmail", system=True)
@@ -206,7 +368,7 @@ def deploy_chatmail(mail_domain: str, mail_server: str, dkim_selector: str) -> N
     )
 
     # Deploy acmetool to have TLS certificates.
-    deploy_acmetool(nginx_hook=True, domains=[mail_server])
+    deploy_acmetool(nginx_hook=True, domains=[mail_server, f"mta-sts.{mail_server}"])
 
     apt.packages(
         name="Install Postfix",
@@ -231,11 +393,27 @@ def deploy_chatmail(mail_domain: str, mail_server: str, dkim_selector: str) -> N
         packages=["nginx"],
     )
 
-    _install_chatmaild()
+    apt.packages(
+        name="Install fcgiwrap",
+        packages=["fcgiwrap"],
+    )
+
+    pkg_root = importlib.resources.files(__package__)
+    chatmail_ini = pkg_root.joinpath("../../../chatmail.ini").resolve()
+    config = get_ini_settings(mail_domain, chatmail_ini)
+    www_path = pkg_root.joinpath("../../../www").resolve()
+
+    build_dir = www_path.joinpath("build")
+    src_dir = www_path.joinpath("src")
+    build_webpages(src_dir, build_dir, config)
+    files.rsync(f"{build_dir}/", "/var/www/html", flags=["-avz"])
+
+    _install_remote_venv_with_chatmaild()
     debug = False
     dovecot_need_restart = _configure_dovecot(mail_server, debug=debug)
     postfix_need_restart = _configure_postfix(mail_domain, debug=debug)
     opendkim_need_restart = _configure_opendkim(mail_domain, dkim_selector)
+    mta_sts_need_restart = _install_mta_sts_daemon()
     nginx_need_restart = _configure_nginx(mail_domain)
 
     systemd.service(
@@ -246,6 +424,15 @@ def deploy_chatmail(mail_domain: str, mail_server: str, dkim_selector: str) -> N
         restarted=opendkim_need_restart,
     )
 
+    systemd.service(
+        name="Start and enable MTA-STS daemon",
+        service="mta-sts-daemon.service",
+        daemon_reload=True,
+        running=True,
+        enabled=True,
+        restarted=mta_sts_need_restart,
+    )
+
     systemd.service(
         name="Start and enable Postfix",
         service="postfix.service",
@@ -292,14 +479,3 @@ def deploy_chatmail(mail_domain: str, mail_server: str, dkim_selector: str) -> N
         enabled=True,
         restarted=journald_conf,
     )
-
-    def callback():
-        result = server.shell(
-            commands=[
-                f"""sed 's/\tIN/ 600 IN/;s/\t(//;s/\"$//;s/^\t  \"//g; s/ ).*//' """
-                f"""/etc/dkimkeys/{dkim_selector}.txt | tr --delete '\n'"""
-            ]
-        )
-        logger.info(f"Add this TXT entry into DNS zone: {result.stdout}")
-
-    python.call(name="Print TXT entry for DKIM", function=callback)

deploy-chatmail/src/deploy_chatmail/acmetool/__init__.py

@@ -46,8 +46,7 @@ def deploy_acmetool(nginx_hook=False, email="", domains=[]):
         mode="644",
     )
 
-    for domain in domains:
-        server.shell(
-            name=f"Request certificate for {domain}",
-            commands=[f"acmetool want {domain}"],
-        )
+    server.shell(
+        name=f"Request certificate for: { ', '.join(domains) }",
+        commands=[f"acmetool want { ' '.join(domains)}"],
+    )

deploy-chatmail/src/deploy_chatmail/deploy.py

@@ -6,7 +6,7 @@ from deploy_chatmail import deploy_chatmail
 def main():
     mail_domain = os.getenv("CHATMAIL_DOMAIN")
     mail_server = os.getenv("CHATMAIL_SERVER", mail_domain)
-    dkim_selector = os.getenv("CHATMAIL_DKIM_SELECTOR", "2023")
+    dkim_selector = os.getenv("CHATMAIL_DKIM_SELECTOR", "dkim")
 
     assert mail_domain
     assert mail_server

deploy-chatmail/src/deploy_chatmail/dovecot/dovecot.conf.j2

@@ -19,7 +19,7 @@ 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
+imap_capability = IMAP4rev1 IDLE MOVE QUOTA CONDSTORE NOTIFY
 
 
 # Authentication for system users.
@@ -118,6 +118,24 @@ service auth-worker {
   user = vmail
 }
 
+service imap-login {
+    # High-security mode.
+    # Each process serves a single connection and exits afterwards.
+    # This is the default, but we set it explicitly to be sure.
+    # See <https://doc.dovecot.org/admin_manual/login_processes/#high-security-mode> for details.
+    service_count = 1
+
+    # Inrease the number of simultaneous connections.
+    #
+    # As of Dovecot 2.3.19.1 the default is 100 processes.
+    # Combined with `service_count = 1` it means only 100 connections
+    # can be handled simultaneously.
+    process_limit = 10000
+
+    # Avoid startup latency for new connections.
+    process_min_avail = 10
+}
+
 ssl = required
 ssl_cert = </var/lib/acme/live/{{ config.hostname }}/fullchain
 ssl_key = </var/lib/acme/live/{{ config.hostname }}/privkey

deploy-chatmail/src/deploy_chatmail/genqr.py

@@ -0,0 +1,87 @@
+import importlib
+import qrcode
+import os
+from PIL import ImageFont, ImageDraw, Image
+import io
+
+
+def gen_qr_png_data(maildomain):
+    url = f"DCACCOUNT:https://{maildomain}/cgi-bin/newemail.py"
+    image = gen_qr(maildomain, url)
+    temp = io.BytesIO()
+    image.save(temp, format="png")
+    temp.seek(0)
+    return temp
+
+
+def gen_qr(maildomain, url):
+    # taken and modified from
+    # https://github.com/deltachat/mailadm/blob/master/src/mailadm/gen_qr.py
+
+    # info = f"{maildomain} invite code"
+    info = ""
+
+    # load QR code
+    qr = qrcode.QRCode(
+        version=1,
+        error_correction=qrcode.constants.ERROR_CORRECT_H,
+        box_size=1,
+        border=1,
+    )
+    qr.add_data(url)
+    qr.make(fit=True)
+    qr_img = qr.make_image(fill_color="black", back_color="white")
+
+    # paint all elements
+    ttf_path = str(
+        importlib.resources.files(__package__).joinpath("data/opensans-regular.ttf")
+    )
+    logo_red_path = str(
+        importlib.resources.files(__package__).joinpath("data/delta-chat-bw.png")
+    )
+
+    assert os.path.exists(ttf_path), ttf_path
+    font_size = 16
+    font = ImageFont.truetype(font=ttf_path, size=font_size)
+
+    num_lines = ((info).count("\n") + 1) if info else 0
+
+    size = width = 384
+    qr_padding = 6
+    text_height = font_size * num_lines
+    height = size + text_height
+
+    image = Image.new("RGBA", (width, height), "white")
+    qr_final_size = width - (qr_padding * 2)
+
+    if num_lines:
+        draw = ImageDraw.Draw(image)
+
+        # draw text
+        if hasattr(font, "getsize"):
+            info_pos = (width - font.getsize(info.strip())[0]) // 2
+        else:
+            info_pos = (width - font.getbbox(info.strip())[3]) // 2
+
+        draw.multiline_text(
+            (info_pos, size - qr_padding // 2),
+            info,
+            font=font,
+            fill="black",
+            align="right",
+        )
+
+    # paste QR code
+    image.paste(
+        qr_img.resize((qr_final_size, qr_final_size), resample=Image.NEAREST),
+        (qr_padding, qr_padding),
+    )
+
+    # background delta logo
+    logo2_img = Image.open(logo_red_path)
+    logo2_width = int(size / 6)
+    logo2 = logo2_img.resize((logo2_width, logo2_width), resample=Image.NEAREST)
+    pos = int((size / 2) - (logo2_width / 2))
+    image.paste(logo2, (pos, pos), mask=logo2)
+
+    return image

deploy-chatmail/src/deploy_chatmail/nginx/mta-sts.txt.j2

@@ -0,0 +1,4 @@
+version: STSv1
+mode: enforce
+mx: {{ config.domain_name }}
+max_age: 2419200

deploy-chatmail/src/deploy_chatmail/nginx/nginx.conf.j2

@@ -26,8 +26,6 @@ http {
 	gzip on;
 
 	server {
-		listen 80 default_server;
-		listen [::]:80 default_server;
 		listen 443 ssl default_server;
 		listen [::]:443 ssl default_server;
 
@@ -42,6 +40,16 @@ http {
 			# as directory, then fall back to displaying a 404.
 			try_files $uri $uri/ =404;
 		}
+
+        # add cgi-bin support
+        include /usr/share/doc/fcgiwrap/examples/nginx.conf;
 	}
+    server {
+        listen 80 default_server;
+        listen [::]:80 default_server;
+        server_name _;
+
+        return 301 https://$host$request_uri;
+    }
 }
 

deploy-chatmail/src/deploy_chatmail/opendkim/KeyTable

@@ -0,0 +1 @@
+dkim._domainkey.{{ config.domain_name }} {{ config.domain_name }}:{{ config.opendkim_selector }}:/etc/dkimkeys/dkim.private

deploy-chatmail/src/deploy_chatmail/opendkim/SigningTable

@@ -0,0 +1 @@
+*@{{ config.domain_name }} {{ config.opendkim_selector }}._domainkey.{{ config.domain_name }}

deploy-chatmail/src/deploy_chatmail/opendkim/opendkim.conf

@@ -1,7 +1,4 @@
-# This is a basic configuration for signing and verifying. It can easily be
-# adapted to suit a basic installation. See opendkim.conf(5) and
-# /usr/share/doc/opendkim/examples/opendkim.conf.sample for complete
-# documentation of available configuration parameters.
+# OpenDKIM configuration.
 
 Syslog			yes
 SyslogSuccess		yes
@@ -21,7 +18,9 @@ OversignHeaders		From
 # setup options can be found in /usr/share/doc/opendkim/README.opendkim.
 Domain			{{ config.domain_name }}
 Selector		{{ config.opendkim_selector }}
-KeyFile		/etc/dkimkeys/{{ config.opendkim_selector }}.private
+KeyFile		  /etc/dkimkeys/{{ config.opendkim_selector }}.private
+KeyTable          /etc/dkimkeys/KeyTable
+SigningTable      refile:/etc/dkimkeys/SigningTable
 
 # 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

deploy-chatmail/src/deploy_chatmail/postfix/main.cf.j2

@@ -23,6 +23,7 @@ smtpd_tls_security_level=may
 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_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
 myhostname = {{ config.domain_name }}

deploy-chatmail/src/deploy_chatmail/postfix/master.cf.j2

@@ -32,6 +32,7 @@ submission inet n       -       y       -       -       smtpd
   -o smtpd_recipient_restrictions=
   -o smtpd_relay_restrictions=permit_sasl_authenticated,reject
   -o milter_macro_daemon_name=ORIGINATING
+  -o smtpd_client_connection_count_limit=1000
   -o smtpd_proxy_filter=127.0.0.1:10080
 smtps     inet  n       -       y       -       -       smtpd
   -o syslog_name=postfix/smtps
@@ -46,6 +47,7 @@ smtps     inet  n       -       y       -       -       smtpd
   -o smtpd_sender_restrictions=$mua_sender_restrictions
   -o smtpd_recipient_restrictions=
   -o smtpd_relay_restrictions=permit_sasl_authenticated,reject
+  -o smtpd_client_connection_count_limit=1000
   -o milter_macro_daemon_name=ORIGINATING
   -o smtpd_proxy_filter=127.0.0.1:10080
 #628       inet  n       -       y       -       -       qmqpd

deploy-chatmail/src/deploy_chatmail/postfix/mta-sts-daemon.service

@@ -0,0 +1,10 @@
+[Unit]
+Description=Postfix MTA-STS resolver daemon
+
+[Service]
+ExecStart=/usr/local/lib/postfix-mta-sts-resolver/bin/mta-sts-daemon
+Restart=always
+RestartSec=30
+
+[Install]
+WantedBy=multi-user.target

deploy-chatmail/src/deploy_chatmail/postfix/mta-sts-daemon.yml

@@ -0,0 +1,13 @@
+host: 127.0.0.1
+port: 8461
+reuse_port: true
+shutdown_timeout: 20
+cache:
+  type: internal
+  options:
+    cache_size: 10000
+proactive_policy_fetching:
+  enabled: true
+default_zone:
+  strict_testing: false
+  timeout: 4

deploy-chatmail/src/deploy_chatmail/www.py

@@ -0,0 +1,110 @@
+import importlib.resources
+import webbrowser
+import hashlib
+import time
+import traceback
+
+import markdown
+from jinja2 import Template
+from .genqr import gen_qr_png_data
+from deploy_chatmail import get_ini_settings
+
+
+def snapshot_dir_stats(somedir):
+    d = {}
+    for path in somedir.iterdir():
+        if path.is_file() and path.name[0] != "." and path.suffix != ".swp":
+            mtime = path.stat().st_mtime
+            hash = hashlib.md5(path.read_bytes()).hexdigest()
+            d[path] = (mtime, hash)
+    return d
+
+
+def prepare_template(source):
+    assert source.exists(), source
+    render_vars = {}
+    render_vars["pagename"] = "home" if source.stem == "index" else source.stem
+    render_vars["markdown_html"] = markdown.markdown(source.read_text())
+    page_layout = source.with_name("page-layout.html").read_text()
+    return render_vars, page_layout
+
+
+def build_webpages(src_dir, build_dir, config):
+    try:
+        _build_webpages(src_dir, build_dir, config)
+    except Exception:
+        print(traceback.format_exc())
+
+
+def _build_webpages(src_dir, build_dir, config):
+    mail_domain = config["mail_domain"]
+    assert src_dir.exists(), src_dir
+    if not build_dir.exists():
+        build_dir.mkdir()
+
+    qr_path = build_dir.joinpath(f"qr-chatmail-invite-{mail_domain}.png")
+    qr_path.write_bytes(gen_qr_png_data(mail_domain).read())
+
+    for path in src_dir.iterdir():
+        if path.suffix == ".md":
+            render_vars, content = prepare_template(path)
+            target = build_dir.joinpath(path.stem + ".html")
+
+            # recursive jinja2 rendering
+            while 1:
+                new = Template(content).render(config=config, **render_vars)
+                if new == content:
+                    break
+                content = new
+
+            with target.open("w") as f:
+                f.write(content)
+        elif path.name != "page-layout.html":
+            target = build_dir.joinpath(path.name)
+            target.write_bytes(path.read_bytes())
+    return build_dir
+
+
+def main():
+    chatmail_domain = "example.testrun.org"
+    path = importlib.resources.files(__package__)
+    reporoot = path.joinpath("../../../").resolve()
+    inipath = reporoot.joinpath("chatmail.ini")
+    config = get_ini_settings(chatmail_domain, inipath)
+    config["webdev"] = True
+    www_path = reporoot.joinpath("www")
+    src_path = www_path.joinpath("src")
+    stats = None
+    build_dir = www_path.joinpath("build")
+    src_dir = www_path.joinpath("src")
+    index_path = build_dir.joinpath("index.html")
+
+    # start web page generation, open a browser and wait for changes
+    build_webpages(src_dir, build_dir, config)
+    webbrowser.open(str(index_path))
+    stats = snapshot_dir_stats(src_path)
+    print(f"\nOpened URL: file://{index_path.resolve()}\n")
+    print(f"watching {src_path} directory for changes")
+
+    changenum = 0
+    for count in range(0, 1000000):
+        newstats = snapshot_dir_stats(src_path)
+        if newstats == stats and count % 60 != 0:
+            count += 1
+            time.sleep(1.0)
+            continue
+
+        for key in newstats:
+            if stats[key] != newstats[key]:
+                print(f"*** CHANGED: {key}")
+                changenum += 1
+
+        stats = newstats
+        build_webpages(src_dir, build_dir, config)
+        print(f"[{changenum}] regenerated web pages at: {index_path}")
+        print(f"URL: file://{index_path.resolve()}\n\n")
+        count = 0
+
+
+if __name__ == "__main__":
+    main()

scripts/bench.sh

@@ -1,4 +1,4 @@
 #!/bin/bash
 set -e
 
-online-tests/venv/bin/pytest online-tests/benchmark.py -vrx 
+venv/bin/pytest tests/online/benchmark.py -vrx

scripts/deploy.sh

@@ -1,10 +1,8 @@
 #!/usr/bin/env bash
-: ${CHATMAIL_DOMAIN:=c1.testrun.org}
-export CHATMAIL_DOMAIN
 
-chatmaild/venv/bin/python3 -m build -n --sdist chatmaild --outdir dist
+echo -----------------------------------------
+echo deploying to $CHATMAIL_DOMAIN 
+echo -----------------------------------------
 
-deploy-chatmail/venv/bin/pyinfra --ssh-user root "$CHATMAIL_DOMAIN" \
+venv/bin/pyinfra --ssh-user root "$CHATMAIL_DOMAIN" \
     deploy-chatmail/src/deploy_chatmail/deploy.py
-
-rm -r dist/

scripts/generate-dns-zone.sh

@@ -0,0 +1,23 @@
+#!/bin/sh
+: ${CHATMAIL_DOMAIN:=c1.testrun.org}
+: ${CHATMAIL_SSH:=$CHATMAIL_DOMAIN}
+
+set -e
+SSH="ssh root@$CHATMAIL_SSH"
+EMAIL="root@$CHATMAIL_DOMAIN"
+ACME_ACCOUNT_URL="$($SSH -- acmetool account-url)"
+
+cat <<EOF
+$CHATMAIL_DOMAIN. MX 10 $CHATMAIL_DOMAIN.
+$CHATMAIL_DOMAIN. TXT "v=spf1 a:$CHATMAIL_DOMAIN -all"
+_dmarc.$CHATMAIL_DOMAIN. TXT "v=DMARC1;p=reject;rua=mailto:$EMAIL;ruf=mailto:$EMAIL;fo=1;adkim=r;aspf=r"
+_submission._tcp.$CHATMAIL_DOMAIN.  SRV 0 1 587 $CHATMAIL_DOMAIN.
+_submissions._tcp.$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. IN CAA 128 issue "letsencrypt.org;accounturi=$ACME_ACCOUNT_URL"
+_mta-sts.$CHATMAIL_DOMAIN. IN TXT "v=STSv1; id=$(date -u '+%Y%m%d%H%M')"
+mta-sts.$CHATMAIL_DOMAIN. IN CNAME $CHATMAIL_DOMAIN.
+_smtp._tls.$CHATMAIL_DOMAIN. IN TXT "v=TLSRPTv1;rua=mailto:$EMAIL"
+EOF
+$SSH opendkim-genzone -F | sed 's/^;.*$//;/^$/d'

scripts/init.sh

@@ -1,13 +1,8 @@
 #!/bin/sh
 set -e
-python3 -m venv deploy-chatmail/venv
-deploy-chatmail/venv/bin/pip install pyinfra pytest
-deploy-chatmail/venv/bin/pip install -e deploy-chatmail
-deploy-chatmail/venv/bin/pip install -e chatmaild
+python3 -m venv venv
+pip=venv/bin/pip
 
-python3 -m venv chatmaild/venv
-chatmaild/venv/bin/pip install --upgrade pytest build 'setuptools>=68'
-chatmaild/venv/bin/pip install -e chatmaild
-
-python3 -m venv online-tests/venv
-online-tests/venv/bin/pip install pytest pytest-timeout pdbpp deltachat 
+$pip install pyinfra pytest build 'setuptools>=68' tox 
+$pip install -e deploy-chatmail 
+$pip install -e chatmaild 

scripts/test.sh

@@ -1,3 +1,4 @@
 #!/bin/bash
-chatmaild/venv/bin/pytest chatmaild/ $@
-online-tests/venv/bin/pytest online-tests/ -vrx --durations=5 $@
+venv/bin/tox -c chatmaild
+venv/bin/tox -c deploy-chatmail
+venv/bin/pytest tests/online -rs -vrx --durations=5 $@

scripts/webdev.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+
+echo -----------------------------------------
+echo starting local webdev 
+echo -----------------------------------------
+
+venv/bin/python3 -m deploy_chatmail.www 
+
+

tests/chatmaild/test_doveauth.py

@@ -0,0 +1,90 @@
+import json
+import sys
+import pytest
+import threading
+import queue
+import traceback
+
+import chatmaild.doveauth
+from chatmaild.doveauth import get_user_data, lookup_passdb, handle_dovecot_request
+from chatmaild.database import Database, DBError
+
+
+def test_basic(db):
+    lookup_passdb(db, "link2xt@c1.testrun.org", "Pieg9aeToe3eghuthe5u")
+    data = get_user_data(db, "link2xt@c1.testrun.org")
+    assert data
+    data2 = lookup_passdb(db, "link2xt@c1.testrun.org", "Pieg9aeToe3eghuthe5u")
+    assert data == data2
+
+
+def test_dont_overwrite_password_on_wrong_login(db):
+    """Test that logging in with a different password doesn't create a new user"""
+    res = lookup_passdb(db, "newuser1@something.org", "kajdlkajsldk12l3kj1983")
+    assert res["password"]
+    res2 = lookup_passdb(db, "newuser1@something.org", "kajdlqweqwe")
+    # this function always returns a password hash, which is actually compared by dovecot.
+    assert res["password"] == res2["password"]
+
+
+def test_nocreate_file(db, monkeypatch, tmpdir):
+    p = tmpdir.join("nocreate")
+    p.write("")
+    monkeypatch.setattr(chatmaild.doveauth, "NOCREATE_FILE", str(p))
+    lookup_passdb(db, "newuser1@something.org", "zequ0Aimuchoodaechik")
+    assert not get_user_data(db, "newuser1@something.org")
+
+
+def test_db_version(db):
+    assert db.get_schema_version() == 1
+
+
+def test_too_high_db_version(db):
+    with db.write_transaction() as conn:
+        conn.execute("PRAGMA user_version=%s;" % (999,))
+    with pytest.raises(DBError):
+        db.ensure_tables()
+
+
+def test_handle_dovecot_request(db):
+    msg = (
+        "Lshared/passdb/laksjdlaksjdlaksjdlk12j3l1k2j3123/"
+        "some42@c3.testrun.org\tsome42@c3.testrun.org"
+    )
+    res = handle_dovecot_request(msg, db, "c3.testrun.org")
+    assert res
+    assert res[0] == "O" and res.endswith("\n")
+    userdata = json.loads(res[1:].strip())
+    assert userdata["home"] == "/home/vmail/some42@c3.testrun.org"
+    assert userdata["uid"] == userdata["gid"] == "vmail"
+    assert userdata["password"].startswith("{SHA512-CRYPT}")
+
+
+def test_100_concurrent_lookups_different_accounts(db, gencreds):
+    num_threads = 100
+    req_per_thread = 5
+    results = queue.Queue()
+
+    def lookup(db):
+        for i in range(req_per_thread):
+            addr, password = gencreds()
+            try:
+                lookup_passdb(db, addr, password)
+            except Exception:
+                results.put(traceback.format_exc())
+            else:
+                results.put(None)
+
+    threads = []
+    for i in range(num_threads):
+        thread = threading.Thread(target=lookup, args=(db,), daemon=True)
+        threads.append(thread)
+
+    print(f"created {num_threads} threads, starting them and waiting for results")
+    for thread in threads:
+        thread.start()
+
+    for i in range(num_threads * req_per_thread):
+        res = results.get()
+        if res is not None:
+            pytest.fail(f"concurrent lookup failed\n{res}")

tests/chatmaild/test_filtermail.py

@@ -0,0 +1,107 @@
+from chatmaild.filtermail import check_encrypted, check_DATA, SendRateLimiter, check_mdn, is_passthrough_recipient
+import pytest
+
+
+@pytest.fixture
+def maildomain():
+    # let's not depend on a real chatmail instance for the offline tests below
+    return "chatmail.example.org"
+
+
+def test_reject_forged_from(maildata, gencreds):
+    class env:
+        mail_from = gencreds()[0]
+        rcpt_tos = [gencreds()[0]]
+
+    # test that the filter lets good mail through
+    env.content = maildata("plain.eml", from_addr=env.mail_from).as_bytes()
+    assert not check_DATA(envelope=env)
+
+    # test that the filter rejects forged mail
+    env.content = maildata("plain.eml", from_addr="forged@c3.testrun.org").as_bytes()
+    error = check_DATA(envelope=env)
+    assert "500" in error
+
+
+def test_filtermail_no_encryption_detection(maildata):
+    msg = maildata("plain.eml")
+    assert not check_encrypted(msg)
+
+    # https://xkcd.com/1181/
+    msg = maildata("fake-encrypted.eml")
+    assert not check_encrypted(msg)
+
+
+def test_filtermail_encryption_detection(maildata):
+    msg = maildata("encrypted.eml")
+    assert check_encrypted(msg)
+
+    # if the subject is not "..." it is not considered ac-encrypted
+    msg.replace_header("Subject", "Click this link")
+    assert not check_encrypted(msg)
+
+
+def test_filtermail_is_mdn(maildata, gencreds):
+    from_addr = gencreds()[0]
+    to_addr = gencreds()[0] + ".other"
+    msg = maildata("mdn.eml", from_addr, to_addr)
+
+    class env:
+        mail_from = from_addr
+        rcpt_tos = [to_addr]
+        content = msg.as_bytes()
+
+    assert check_mdn(msg, env)
+    print(msg.as_string())
+    assert not check_DATA(env)
+
+
+def test_filtermail_to_multiple_recipients_no_mdn(maildata, gencreds):
+    from_addr = gencreds()[0]
+    to_addr = gencreds()[0] + ".other"
+    thirdaddr = gencreds()[0]
+    msg = maildata("mdn.eml", from_addr, to_addr)
+
+    class env:
+        mail_from = from_addr
+        rcpt_tos = [to_addr, thirdaddr]
+        content = msg.as_bytes()
+
+    assert not check_mdn(msg, env)
+
+
+def test_send_rate_limiter():
+    limiter = SendRateLimiter()
+    for i in range(100):
+        if limiter.is_sending_allowed("some@example.org"):
+            if i <= SendRateLimiter.MAX_USER_SEND_PER_MINUTE:
+                continue
+            pytest.fail("limiter didn't work")
+        else:
+            assert i == SendRateLimiter.MAX_USER_SEND_PER_MINUTE + 1
+            break
+
+
+def test_excempt_privacy(maildata, gencreds):
+    from_addr = gencreds()[0]
+    to_addr = "privacy@testrun.org"
+    false_to = "privacy@tstrn.org"
+    false_to2 = "prvcy@testrun.org"
+    assert is_passthrough_recipient(to_addr)
+
+    msg = maildata("plain.eml", from_addr, to_addr)
+
+    class env:
+        mail_from = from_addr
+        rcpt_tos = [to_addr]
+        content = msg.as_bytes()
+
+    # assert that None/no error is returned
+    assert not check_DATA(envelope=env)
+
+    class env2:
+        mail_from = from_addr
+        rcpt_tos = [to_addr, false_to, false_to2]
+        content = msg.as_bytes()
+
+    assert "500" in check_DATA(envelope=env2)

tests/chatmaild/test_newmail.py

@@ -0,0 +1,29 @@
+import json
+
+import chatmaild
+from chatmaild.newemail import create_newemail_dict, print_new_account
+
+
+def test_create_newemail_dict():
+    ac1 = create_newemail_dict(domain="example.org")
+    assert "@" in ac1["email"]
+    assert len(ac1["password"]) >= 10
+
+    ac2 = create_newemail_dict(domain="example.org")
+
+    assert ac1["email"] != ac2["email"]
+    assert ac1["password"] != ac2["password"]
+
+
+def test_print_new_account(capsys, monkeypatch, maildomain, tmpdir):
+    p = tmpdir.join("mailname")
+    p.write(maildomain)
+    monkeypatch.setattr(chatmaild.newemail, "mailname_path", str(p))
+    print_new_account()
+    out, err = capsys.readouterr()
+    lines = out.split("\n")
+    assert lines[0] == "Content-Type: application/json"
+    assert not lines[1]
+    dic = json.loads(lines[2])
+    assert dic["email"].endswith(f"@{maildomain}")
+    assert len(dic["password"]) >= 10

tests/conftest.py

@@ -6,9 +6,16 @@ import subprocess
 import imaplib
 import smtplib
 import itertools
-from math import ceil
+from email.parser import BytesParser
+from email import policy
+from pathlib import Path
 import pytest
 
+from chatmaild.database import Database
+
+
+conftestdir = Path(__file__).parent
+
 
 def pytest_addoption(parser):
     parser.addoption(
@@ -65,7 +72,7 @@ def pytest_report_header():
 
 @pytest.fixture
 def benchmark(request):
-    def bench(func, num, name=None):
+    def bench(func, num, name=None, reportfunc=None):
         if name is None:
             name = func.__name__
         durations = []
@@ -74,7 +81,7 @@ def benchmark(request):
             func()
             durations.append(time.time() - now)
         durations.sort()
-        request.config._benchresults[name] = durations
+        request.config._benchresults[name] = (reportfunc, durations)
 
     return bench
 
@@ -86,7 +93,7 @@ def pytest_terminal_summary(terminalreporter):
         return
 
     tr.section("benchmark results")
-    float_names = 'median min max'.split()
+    float_names = "median min max".split()
     width = max(map(len, float_names))
 
     def fcol(parts):
@@ -95,7 +102,9 @@ def pytest_terminal_summary(terminalreporter):
     headers = f"{'benchmark name': <30} " + fcol(float_names)
     tr.write_line(headers)
     tr.write_line("-" * len(headers))
-    for name, durations in results.items():
+    summary_lines = []
+
+    for name, (reportfunc, durations) in results.items():
         measures = [
             sorted(durations)[len(durations) // 2],
             min(durations),
@@ -104,6 +113,16 @@ def pytest_terminal_summary(terminalreporter):
         line = f"{name: <30} "
         line += fcol(f"{float: 2.2f}" for float in measures)
         tr.write_line(line)
+        vmedian, vmin, vmax = measures
+        if reportfunc:
+            for line in reportfunc(vmin=vmin, vmedian=vmedian, vmax=vmax):
+                summary_lines.append(line)
+
+    if summary_lines:
+        tr.write_line("")
+        tr.section("benchmark summary measures")
+        for line in summary_lines:
+            tr.write_line(line)
 
 
 @pytest.fixture
@@ -111,6 +130,16 @@ def imap(maildomain):
     return ImapConn(maildomain)
 
 
+@pytest.fixture
+def make_imap_connection(maildomain):
+    def make_imap_connection():
+        conn = ImapConn(maildomain)
+        conn.connect()
+        return conn
+
+    return make_imap_connection
+
+
 class ImapConn:
     AuthError = imaplib.IMAP4.error
     logcmd = "journalctl -f -u dovecot"
@@ -151,6 +180,16 @@ def smtp(maildomain):
     return SmtpConn(maildomain)
 
 
+@pytest.fixture
+def make_smtp_connection(maildomain):
+    def make_smtp_connection():
+        conn = SmtpConn(maildomain)
+        conn.connect()
+        return conn
+
+    return make_smtp_connection
+
+
 class SmtpConn:
     AuthError = smtplib.SMTPAuthenticationError
     logcmd = "journalctl -f -t postfix/smtpd -t postfix/smtp -t postfix/lmtp"
@@ -189,13 +228,20 @@ def gencreds(maildomain):
             num = next(count)
             alphanumeric = "abcdefghijklmnopqrstuvwxyz1234567890"
             user = "".join(random.choices(alphanumeric, k=10))
-            user = f"ac{num}_{user}"
-            password = "".join(random.choices(alphanumeric, k=10))
+            user = f"ac{num}_{user}"[:9]
+            password = "".join(random.choices(alphanumeric, k=12))
             yield f"{user}@{domain}", f"{password}"
 
     return lambda domain=None: next(gen(domain))
 
 
+@pytest.fixture()
+def db(tmpdir):
+    db_path = tmpdir / "passdb.sqlite"
+    print("database path:", db_path)
+    return Database(db_path)
+
+
 #
 # Delta Chat testplugin re-use
 # use the cmfactory fixture to get chatmail instance accounts
@@ -232,11 +278,13 @@ class ChatmailTestProcess:
 
 
 @pytest.fixture
-def cmfactory(request, gencreds, tmpdir, data, maildomain):
+def cmfactory(request, gencreds, tmpdir, maildomain):
     # cloned from deltachat.testplugin.amfactory
     pytest.importorskip("deltachat")
     from deltachat.testplugin import ACFactory
 
+    data = request.getfixturevalue("data")
+
     testproc = ChatmailTestProcess(request.config, maildomain, gencreds)
     am = ACFactory(request=request, tmpdir=tmpdir, testprocess=testproc, data=data)
 
@@ -266,7 +314,7 @@ class Remote:
         self.sshdomain = sshdomain
 
     def iter_output(self, logcmd=""):
-        getjournal = f"journalctl -f" if not logcmd else logcmd
+        getjournal = "journalctl -f" if not logcmd else logcmd
         self.popen = subprocess.Popen(
             ["ssh", f"root@{self.sshdomain}", getjournal],
             stdout=subprocess.PIPE,
@@ -281,13 +329,31 @@ class Remote:
 
 
 @pytest.fixture
-def mailgen(request):
-    class Mailgen:
-        def get_encrypted(self, from_addr, to_addr):
-            data = request.fspath.dirpath("mailgen/encrypted.eml").read()
-            return data.format(from_addr=from_addr, to_addr=to_addr)
+def lp(request):
+    class LP:
+        def sec(self, msg):
+            print(f"---- {msg} ----")
 
-    return Mailgen()
+        def indent(self, msg):
+            print(f"     {msg}")
+
+    return LP()
+
+
+@pytest.fixture
+def maildata(request, gencreds):
+    datadir = conftestdir.joinpath("mail-data")
+
+    def maildata(name, from_addr=None, to_addr=None):
+        if from_addr is None:
+            from_addr = gencreds()[0]
+        if to_addr is None:
+            to_addr = gencreds()[0]
+        data = datadir.joinpath(name).read_text()
+        text = data.format(from_addr=from_addr, to_addr=to_addr)
+        return BytesParser(policy=policy.default).parsebytes(text.encode())
+
+    return maildata
 
 
 @pytest.fixture

tests/mail-data/fake-encrypted.eml

@@ -0,0 +1,25 @@
+Subject: =?utf-8?q?Message_from_foobar=40c2=2Etestrun=2Eorg?=
+Chat-Disposition-Notification-To: foobar@c2.testrun.org
+Chat-User-Avatar: 0
+From: <{from_addr}>
+To: <{to_addr}>
+Date: Sun, 15 Oct 2023 16:41:44 +0000
+Message-ID: <Mr.3gckbNy5bch.uK3Hd2Ws6-w@c2.testrun.org>
+References: <Mr.3gckbNy5bch.uK3Hd2Ws6-w@c2.testrun.org>
+Chat-Version: 1.0
+Autocrypt: addr={from_addr}; prefer-encrypt=mutual;
+	keydata=xjMEZSrw3hYJKwYBBAHaRw8BAQdAiEKNQFU28c6qsx4vo/JHdt73RXdjMOmByf/XsGiJ7m
+	nNFzxmb29iYXJAYzIudGVzdHJ1bi5vcmc+wosEEBYIADMCGQEFAmUq8N4CGwMECwkIBwYVCAkKCwID
+	FgIBFiEEGil0OvTIa6RngmCLUYNnEa9leJAACgkQUYNnEa9leJCX3gEAhm0MehE5byBBU1avPczr/I
+	HjNLht7Qf6++mAhlJmtDcA/0C8VYJhsUpmiDjuZaMDWNv4FO2BJG6LH7gSm6n7ClMJzjgEZSrw3hIK
+	KwYBBAGXVQEFAQEHQAxGG/QW0owCfMp1A+vXEMwgzWcBpNFr58kX2eXuPpM6AwEIB8J4BBgWCAAgBQ
+	JlKvDeAhsMFiEEGil0OvTIa6RngmCLUYNnEa9leJAACgkQUYNnEa9leJDg1gEAwLf8KDoAAKyYgjyI
+	vYvO9VEgBni1C4Xx1VjcaEmlDK8BALoFuUCK+enw76TtDcAUKhlhUiM6SDRExkS4Nskp/BcK
+MIME-Version: 1.0
+Content-Type: text/plain; charset=utf-8; format=flowed; delsp=no
+
+-----BEGIN PGP MESSAGE-----
+Hi!
+-----END PGP MESSAGE-----
+
+

tests/mail-data/mdn.eml

@@ -0,0 +1,33 @@
+Subject: Message opened
+From: <{from_addr}>
+To: <{to_addr}>
+Date: Sun, 15 Oct 2023 16:43:25 +0000
+Message-ID: <Mr.78MWtlV7RAi.goCFzBhCYfy@c2.testrun.org>
+Auto-Submitted: auto-replied
+Chat-Version: 1.0
+MIME-Version: 1.0
+Content-Type: multipart/report; report-type=disposition-notification;
+	boundary="Gl92xgZjOShJ5PGHntqYkoo2OK2Dvi"
+
+
+--Gl92xgZjOShJ5PGHntqYkoo2OK2Dvi
+Content-Type: text/plain; charset=utf-8; format=flowed; delsp=no
+
+The "Hi!" message you sent was displayed on the screen of the recipient.
+
+This is no guarantee the content was read.
+
+
+--Gl92xgZjOShJ5PGHntqYkoo2OK2Dvi
+Content-Type: message/disposition-notification
+
+Reporting-UA: Delta Chat 1.124.1
+Original-Recipient: rfc822;barbaz@c2.testrun.org
+Final-Recipient: rfc822;barbaz@c2.testrun.org
+Original-Message-ID: <Mr.MvmCz-GQbi_.6FGRkhDf05c@c2.testrun.org>
+Disposition: manual-action/MDN-sent-automatically; displayed
+
+
+--Gl92xgZjOShJ5PGHntqYkoo2OK2Dvi--
+
+

tests/mail-data/plain.eml

@@ -0,0 +1,23 @@
+Subject: =?utf-8?q?Message_from_foobar=40c2=2Etestrun=2Eorg?=
+Chat-Disposition-Notification-To: foobar@c2.testrun.org
+Chat-User-Avatar: 0
+From: <{from_addr}>
+To: <{to_addr}>
+Date: Sun, 15 Oct 2023 16:41:44 +0000
+Message-ID: <Mr.3gckbNy5bch.uK3Hd2Ws6-w@c2.testrun.org>
+References: <Mr.3gckbNy5bch.uK3Hd2Ws6-w@c2.testrun.org>
+Chat-Version: 1.0
+Autocrypt: addr=foobar@c2.testrun.org; prefer-encrypt=mutual;
+	keydata=xjMEZSrw3hYJKwYBBAHaRw8BAQdAiEKNQFU28c6qsx4vo/JHdt73RXdjMOmByf/XsGiJ7m
+	nNFzxmb29iYXJAYzIudGVzdHJ1bi5vcmc+wosEEBYIADMCGQEFAmUq8N4CGwMECwkIBwYVCAkKCwID
+	FgIBFiEEGil0OvTIa6RngmCLUYNnEa9leJAACgkQUYNnEa9leJCX3gEAhm0MehE5byBBU1avPczr/I
+	HjNLht7Qf6++mAhlJmtDcA/0C8VYJhsUpmiDjuZaMDWNv4FO2BJG6LH7gSm6n7ClMJzjgEZSrw3hIK
+	KwYBBAGXVQEFAQEHQAxGG/QW0owCfMp1A+vXEMwgzWcBpNFr58kX2eXuPpM6AwEIB8J4BBgWCAAgBQ
+	JlKvDeAhsMFiEEGil0OvTIa6RngmCLUYNnEa9leJAACgkQUYNnEa9leJDg1gEAwLf8KDoAAKyYgjyI
+	vYvO9VEgBni1C4Xx1VjcaEmlDK8BALoFuUCK+enw76TtDcAUKhlhUiM6SDRExkS4Nskp/BcK
+MIME-Version: 1.0
+Content-Type: text/plain; charset=utf-8; format=flowed; delsp=no
+
+Hi!
+
+

tests/online/test_0_login.py

@@ -1,5 +1,6 @@
 import pytest
-import smtplib
+import threading
+import queue
 
 
 def test_login_basic_functioning(imap_or_smtp, gencreds, lp):
@@ -23,6 +24,11 @@ def test_login_basic_functioning(imap_or_smtp, gencreds, lp):
     with pytest.raises(imap_or_smtp.AuthError):
         imap_or_smtp.login(user, password + "wrong")
 
+    lp.sec("creating users with a short password is not allowed")
+    user, _password = gencreds()
+    with pytest.raises(imap_or_smtp.AuthError):
+        imap_or_smtp.login(user, "admin")
+
 
 def test_login_same_password(imap_or_smtp, gencreds):
     """Test two different users logging in with the same password
@@ -35,3 +41,30 @@ def test_login_same_password(imap_or_smtp, gencreds):
     imap_or_smtp.login(user1, password1)
     imap_or_smtp.connect()
     imap_or_smtp.login(user2, password1)
+
+
+def test_concurrent_logins_same_account(
+    make_imap_connection, make_smtp_connection, gencreds
+):
+    """Test concurrent smtp and imap logins
+    and check remote server succeeds on each connection.
+    """
+    user1, password1 = gencreds()
+    login_results = queue.Queue()
+
+    def login_smtp_imap(smtp, imap):
+        try:
+            imap.login(user1, password1)
+        except Exception:
+            login_results.put(False)
+        else:
+            login_results.put(True)
+
+    conns = [(make_smtp_connection(), make_imap_connection()) for i in range(10)]
+
+    for args in conns:
+        thread = threading.Thread(target=login_smtp_imap, args=args, daemon=True)
+        thread.start()
+
+    for _ in conns:
+        assert login_results.get()

tests/online/test_0_qr.py

@@ -0,0 +1,6 @@
+from deploy_chatmail.genqr import gen_qr_png_data
+
+
+def test_gen_qr_png_data(maildomain):
+    data = gen_qr_png_data(maildomain)
+    assert data

tests/online/test_1_basic.py

@@ -20,7 +20,7 @@ def test_use_two_chatmailservers(cmfactory, maildomain2):
 
 
 @pytest.mark.parametrize("forgeaddr", ["internal", "someone@example.org"])
-def test_reject_forged_from(cmsetup, mailgen, lp, forgeaddr):
+def test_reject_forged_from(cmsetup, maildata, lp, forgeaddr):
     user1, user3 = cmsetup.gen_users(2)
 
     lp.sec("send encrypted message with forged from")
@@ -31,7 +31,8 @@ def test_reject_forged_from(cmsetup, mailgen, lp, forgeaddr):
         addr_to_forge = "someone@example.org"
 
     print("message to inject:")
-    msg = mailgen.get_encrypted(from_addr=addr_to_forge, to_addr=user3.addr)
+    msg = maildata("encrypted.eml", from_addr=addr_to_forge, to_addr=user3.addr)
+    msg = msg.as_string()
     for line in msg.split("\n")[:4]:
         print(f"   {line}")
 
@@ -42,10 +43,12 @@ def test_reject_forged_from(cmsetup, mailgen, lp, forgeaddr):
 
 
 @pytest.mark.slow
-def test_exceed_rate_limit(cmsetup, gencreds, mailgen):
+def test_exceed_rate_limit(cmsetup, gencreds, maildata):
     """Test that the per-account send-mail limit is exceeded."""
     user1, user2 = cmsetup.gen_users(2)
-    mail = mailgen.get_encrypted(user1.addr, user2.addr)
+    mail = maildata(
+        "encrypted.eml", from_addr=user1.addr, to_addr=user2.addr
+    ).as_string()
     for i in range(100):
         print("Sending mail", str(i))
         try:
@@ -55,6 +58,6 @@ def test_exceed_rate_limit(cmsetup, gencreds, mailgen):
                 pytest.fail(f"rate limit was exceeded too early with msg {i}")
             outcome = e.recipients[user2.addr]
             assert outcome[0] == 450
-            assert b'4.7.1: Too much mail from' in outcome[1]
+            assert b"4.7.1: Too much mail from" in outcome[1]
             return
     pytest.fail("Rate limit was not exceeded")

tests/online/test_2_deltachat.py

@@ -1,3 +1,4 @@
+import time
 import random
 import pytest
 
@@ -81,3 +82,29 @@ class TestEndToEndDeltaChat:
         ch = ac2.qr_setup_contact(qr)
         assert ch.id >= 10
         ac1._evtracker.wait_securejoin_inviter_progress(1000)
+
+    def test_read_receipts_between_instances(self, cmfactory, lp, maildomain2):
+        ac1 = cmfactory.new_online_configuring_account(cache=False)
+        cmfactory.switch_maildomain(maildomain2)
+        ac2 = cmfactory.new_online_configuring_account(cache=False)
+        cmfactory.bring_accounts_online()
+
+        lp.sec("setup encrypted comms between ac1 and ac2 on different instances")
+        qr = ac1.get_setup_contact_qr()
+        ac2.qr_setup_contact(qr)
+        msg = ac2.wait_next_incoming_message()
+        assert "verified" in msg.text
+
+        lp.sec("ac1 sends a message and ac2 marks it as seen")
+        chat = ac1.create_chat(ac2)
+        msg = chat.send_text("hi")
+        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")
+        deadline = time.time() + 3.1
+        while time.time() < deadline:
+            msgs = m.chat.get_messages()
+            for msg in msgs:
+                assert "error" not in m.get_message_info()
+            time.sleep(1)

tests/test_helpers.py

@@ -0,0 +1,47 @@
+import textwrap
+import importlib.resources
+
+from deploy_chatmail.www import build_webpages
+from deploy_chatmail import get_ini_settings
+
+
+def create_ini(inipath):
+    inipath.write_text(
+        textwrap.dedent(
+            """\
+        [config]
+
+        privacy_postal =
+            address-line1
+            address-line2
+
+        privacy_mail = privacy@example.org
+
+        privacy_pdo =
+            address-line3
+    """
+        )
+    )
+
+
+def test_build_webpages(tmp_path):
+    pkgroot = importlib.resources.files("deploy_chatmail")
+    src_dir = pkgroot.joinpath("../../../www/src").resolve()
+    assert src_dir.exists(), src_dir
+
+    inipath = tmp_path.joinpath("chatmail.ini")
+    create_ini(inipath)
+    config = get_ini_settings("example.org", inipath)
+    build_dir = tmp_path.joinpath("build")
+    build_webpages(src_dir, build_dir, config)
+
+
+def test_get_settings(tmp_path):
+    inipath = tmp_path.joinpath("chatmail.ini")
+    create_ini(inipath)
+
+    d = get_ini_settings("x.testrun.org", inipath)
+    assert d["privacy_postal"] == "address-line1\naddress-line2"
+    assert d["privacy_mail"] == "privacy@example.org"
+    assert d["privacy_pdo"] == "address-line3"
+    assert d["mail_domain"] == "x.testrun.org"

www/src/index.md

@@ -0,0 +1,19 @@
+
+<img width="800px" src="collage-top.png"/>
+
+## Dear [Delta Chat](https://get.delta.chat) users and newcomers, 
+
+Welcome to instant, interoperable and [privacy-preserving](privacy.html) messaging :) 
+
+👉 **Tap** or scan this QR code to get a random `@{{config.mail_domain}}` e-mail address
+
+<a href="DCACCOUNT:https://{{ config.mail_domain }}/cgi-bin/newemail.py">
+    <img width=300 style="float: none;" src="qr-chatmail-invite-{{config.mail_domain}}.png" /></a>
+
+🐣 **Choose** your Avatar and Name
+
+💬 **Start** chatting with any Delta Chat contacts using [QR invite codes](https://delta.chat/en/help#howtoe2ee)
+
+
+## ⚡ Note: this is an experimental service ⚡
+

www/src/info.md

@@ -0,0 +1,39 @@
+
+<img width="800px" src="collage-info.png"/>
+
+## More information 
+
+### Choosing a chatmail address instead of using a random one
+
+In the Delta Chat account setup 
+you may tap `LOG INTO YOUR E-MAIL ACCOUNT` 
+and fill the two fields like this: 
+
+- `Address`: invent a word with *exactly* nine characters 
+   and append `@{{config.mail_domain}}` to it. 
+
+- `Password`: invent at least 9 characters. 
+
+If the e-mail address is not yet taken, you'll get that account. 
+The first login sets your password. 
+
+
+### Rate and storage limits 
+
+- Un-encrypted messages are blocked to recipients outside
+  {{config.mail_domain}} but setting up contact via [QR invite codes](https://delta.chat/en/help#howtoe2ee) 
+  allows your messages to pass freely to any outside recipients.
+
+- You may send up to 60 messages per minute
+
+- Messages are unconditionally removed 40 days after arriving on the server
+
+- You can store up to [100MB messages on the server](https://delta.chat/en/help#what-happens-if-i-turn-on-delete-old-messages-from-server)
+
+
+### Who are the operators? Which software is running? 
+
+This chatmail provider is run by a small voluntary group of devs and sysadmins,
+who [publically develop chatmail provider setups](https://github.com/deltachat/chatmail).
+Chatmail setups aim to be very low-maintenance, resource efficient and 
+interoperable with any other standards-compliant e-mail service. 

www/src/page-layout.html

@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8" />
+    {% if config.webdev %}
+    <meta http-equiv="refresh" content="3">
+    {% endif %}
+    <title>{{ config.mail_domain }} {{ pagename }}</title>
+    <link rel="stylesheet" href="./water.css">
+</head>
+<body>
+{{ markdown_html }}
+<footer>
+    <a href="index.html">home</a> |
+    <a href="info.html">more info</a> |
+    <a href="privacy.html">privacy</a> |
+    <a href="https://github.com/deltachat/chatmail">-> public development </a>
+</footer>
+</body>
+</html>

www/src/privacy.md

@@ -0,0 +1,321 @@
+<img width="800px" src="collage-privacy.png"/>
+
+# Privacy Policy for {{ config.mail_domain }} 
+
+We want to show you in a fair and transparent way
+what personal data is processed by us.
+We follow a strict privacy-by-design approach
+and try to avoid processing your data in the first place,
+but as you may know,
+the internet, 
+and in particular sending e-mail messages,
+does not work without data.
+Still,
+it's only fair that you know at all times
+what personal data is processed
+when you use our service.
+
+If you have any remaining questions about data protection, please contact us. 
+
+## 1. Name and contact information 
+
+Responsible for the processing of your personal data is:
+```
+{{ config.privacy_postal }}
+```
+
+E-mail: {{ config.privacy_mail }}
+
+We have appointed a data protection officer:
+
+```
+{{ config.privacy_pdo }}
+```
+
+## 2. Processing when using chat e-mail services
+
+We provide e-mail services optimized for the use from [Delta Chat](https://delta.chat) apps 
+and process only the data necessary
+for the setup and technical execution of the e-mail dispatch.
+The purpose of the processing is to
+read, write, manage, delete, send, and receive emails.
+For this purpose,
+we operate server-side software
+that enables us to send and receive e-mail messages.
+Allowing the use of the e-mail service,
+we process the following data and details:
+
+- Outgoing and incoming messages (SMTP) are stored for transit 
+  on behalf of their users until the message can be delivered.
+
+- E-Mail-Messages are stored for the recipient and made accessible via IMAP protocols,
+  until explicitly deleted by the user or until a fixed time period is exceeded,
+  (*usually 4-8 weeks*).
+
+- IMAP and SMTP protocols are password protected with unique credentials for each account.
+
+- Users can retrieve or delete all stored messages 
+  without intervention from the operators using standard IMAP client tools.
+
+### 3.1 Account setup
+
+Creating an account happens in one of two ways on our mail servers: 
+
+- with a QR invitation token 
+  which is scanned using the DeltaChat app
+  and then the account is created.
+
+- by letting Delta Chat otherwise create an account 
+  and register it with a {{ config.mail_domain }} mail server. 
+
+In either case, we process the newly created email address.
+No phone numbers,
+other email addresses,
+or other identifiable data
+is currently required.
+The legal basis for the processing is
+Art. 6 (1) lit. b GDPR,
+as you have a usage contract with us
+by using our services.
+
+## 3.2 Processing of E-Mail-Messages
+
+In addition,
+we will process data
+to keep the server infrastructure operational
+for purposes of e-mail dispatch
+and abuse prevention.
+
+- Therefore,
+  it is necessary to process the content and/or metadata
+  (e.g., headers of the email as well as smtp chatter)
+  of E-Mail-Messages in transit. 
+
+- We will keep logs of messages in transit for a limited time.
+  These logs are used to debug delivery problems and software bugs.
+
+In addition,
+we process data to protect the systems from excessive use.
+Therefore, limits are enforced:
+
+- rate limits
+
+- storage limits
+
+- message size limits
+
+- any other limit neccessary for the whole server to function in a healthy way
+  and to prevent abuse.
+
+The processing and use of the above permissions
+are performed to provide the service.
+The data processing is necessary for the use of our services,
+therefore the legal basis of the processing is
+Art. 6 (1) lit. b GDPR,
+as you have a usage contract with us
+by using our services.
+The legal basis for the data processing
+for the purposes of security and abuse prevention is
+Art. 6 (1) lit. f GDPR.
+Our legitimate interest results
+from the aforementioned purposes.
+We will not use the collected data
+for the purpose of drawing conclusions
+about your person.
+
+
+## 3. Processing when using our Website
+
+When you visit our website,
+the browser used on your end device
+automatically sends information to the server of our website.
+This information is temporarily stored in a so-called log file.
+The following information is collected and stored
+until it is automatically deleted
+(*usually 7 days*):
+
+- used type of browser,
+
+- used operating system, 
+
+- access date and time as well as
+
+- country of origin and IP address, 
+
+- the requested file name or HTTP resource,
+
+- the amount of data transferred,
+
+- the access status (file transferred, file not found, etc.) and
+
+- the page from which the file was requested.
+
+This website is hosted by an external service provider (hoster).
+The personal data collected on this website is stored
+on the hoster's servers.
+Our hoster will process your data
+only to the extent necessary to fulfill its obligations
+to perform under our instructions.
+In order to ensure data protection-compliant processing,
+we have concluded a data processing agreement with our hoster.
+
+The aforementioned data is processed by us for the following purposes:  
+
+- Ensuring a reliable connection setup of the website,
+
+- ensuring a convenient use of our website,
+
+- checking and ensuring system security and stability, and
+
+- for other administrative purposes.
+
+The legal basis for the data processing is
+Art. 6 (1) lit. f GDPR.
+Our legitimate interest results
+from the aforementioned purposes of data collection.
+We will not use the collected data
+for the purpose of drawing conclusions about your person.
+
+## 4. Transfer of Data
+
+Your personal data
+will not be transferred to third parties
+for purposes other than those listed below:
+
+a) you have given your express consent
+in accordance with Art. 6 para. 1 sentence 1 lit. a GDPR,  
+
+b) the disclosure is necessary for the assertion, exercise or defence of legal claims
+pursuant to Art. 6 (1) sentence 1 lit. f GDPR
+and there is no reason to assume that you have
+an overriding interest worthy of protection
+in the non-disclosure of your data,  
+
+c) in the event that there is a legal obligation to disclose your data
+pursuant to Art. 6 para. 1 sentence 1 lit. c GDPR,
+as well as  
+
+d) this is legally permissible and necessary
+in accordance with Art. 6 Para. 1 S. 1 lit. b GDPR
+for the processing of contractual relationships with you,  
+
+e) this is carried out by a service provider
+acting on our behalf and on our exclusive instructions,
+whom we have carefully selected (Art. 28 (1) GDPR)
+and with whom we have concluded a corresponding contract on commissioned processing (Art. 28 (3) GDPR),
+which obliges our contractor,
+among other things,
+to implement appropriate security measures
+and grants us comprehensive control powers.
+
+## 5. Rights of the data subject
+
+The rights arise from Articles 12 to 23 GDPR.
+Since no personal data is stored on our servers,
+even in encrypted form,
+there is no need to provide information
+on these or possible objections.
+A deletion can be made
+directly in the Delta Chat email messenger.
+
+a) request information about your personal data processed by us
+in accordance with Art. 15 GDPR.
+In particular,
+you can request information about the processing purposes,
+the category of personal data,
+the categories of recipients to whom your data have been or will be disclosed,
+the planned storage period,
+the existence of a right to rectification, erasure, restriction of processing or objection,
+the existence of a right of complaint,
+the origin of your data if it has not been collected by us,
+as well as the existence of automated decision-making including profiling
+and, if applicable,
+meaningful information about its details;  
+
+b) in accordance with Art. 16 of the GDPR,
+immediately request the correction
+of inaccurate or incomplete personal data stored by us;  
+
+c) pursuant to Article 17 of the GDPR,
+to request the erasure of your personal data stored by us,
+unless the processing is necessary
+for the exercise of the right to freedom of expression and information,
+for compliance with a legal obligation,
+for reasons of public interest,
+or for the establishment, exercise or defence of legal claims;  
+
+d) pursuant to Art. 18 GDPR,
+to request the restriction of the processing of your personal data,
+insofar as the accuracy of the data is disputed by you,
+the processing is unlawful,
+but you object to its erasure
+and we no longer require the data,
+but you need it for the assertion, exercise or defence of legal claims
+or you have objected to the processing pursuant to Art. 21 GDPR;  
+
+e) pursuant to Art. 20 GDPR,
+to receive your personal data that you have provided to us
+in a structured, common and machine-readable format
+or to request that it be transferred to another controller;  
+
+f) in accordance with Art. 7 (3) of the GDPR,
+to revoke your consent given to us at any time.
+This has the consequence that we may no longer continue the data processing
+based on this consent in the future; and  
+
+g) complain to a supervisory authority
+in accordance with Article 77 of the GDPR.
+As a rule,
+you can contact the supervisory authority of your usual place of residence
+or workplace
+or our registered office for this purpose.
+The supervisory authority responsible for our place of business
+is the `{{ config.privacy_supervisor }}`.
+
+If you have any questions or complaints, please feel free to contact us by email:  
+{{ config.privacy_mail }}
+
+
+### 5.1 Right to object
+
+If your personal data is processed on the basis of our legitimate interests
+in accordance with Art. 6 (1) lit. f GDPR,
+you have the right to object to the processing of your personal data
+in accordance with Art. 21 GDPR,
+provided that there are grounds for this based on your particular situation
+or the objection is directed against direct advertising.
+In the latter case,
+you have a general right of objection,
+which will be implemented by us
+without specifying a particular situation.
+
+If you wish to exercise your right of objection,
+simply send an e-mail to: {{ config.privacy_mail }}
+
+### 5.2 Right to withdraw
+
+If your personal data is processed on the basis of your consent
+in accordance with Art. 6 (1) lit. a GDPR
+(e.g. via the mailing list),
+you can withdraw your consent at any time
+and without any disadvantages.
+As a result,
+we may no longer continue the data processing
+that was based on this consent for the future.
+However,
+the withdrawal of your consent
+does not affect the lawfulness of the processing
+carried out on the basis of the consent until the withdrawal.
+
+If you wish to make use of your right of withdrawal,
+simply send an e-mail to: {{ config.privacy_mail }}
+
+## 6. Validity of this privacy policy 
+
+This data protection declaration is valid
+as of *December 2023*.
+Due to the further development of our service and offers
+or due to changed legal or official requirements,
+it may become necessary to revise this data protection declaration from time to time.
+
+