Setup unbound DNS resolver

If you run it as scripts/initenv.sh,
activating venv is useless as bash will exit immediately afterwards.

If you `source` it as suggested by README.md,
`set -e` will set the flag for the current shell
and your shell will exit as soon as some command returns non-zero status,
e.g. cmdeploy fails or you simply do `ls /foo/bar/baz` and `ls`
complains that `/foo/bar/baz` does not exist.

README.md

@@ -25,10 +25,11 @@ DNS domain name (FQDN), for example `chat.example.org`.
         ssh root@CHATMAIL_DOMAIN 
    ```
 
-2. Install the `cmdeploy` command in a virtualenv 
+2. Install the `cmdeploy` command in a virtualenv and activate it
 
    ```
-    source scripts/initenv.sh
+    scripts/initenv.sh
+    . venv/bin/activate
    ```
   
 3. Create chatmail configuration file `chatmail.ini`:

cmdeploy/src/cmdeploy/__init__.py

@@ -378,6 +378,20 @@ def deploy_chatmail(mail_domain: str, mail_server: str, dkim_selector: str) -> N
         system=True,
     )
 
+    # Run local DNS resolver `unbound`.
+    # `resolvconf` takes care of setting up /etc/resolv.conf
+    # to use 127.0.0.1 as the resolver.
+    apt.packages(
+        name="Install unbound",
+        packages="unbound",
+    )
+    systemd.service(
+        name="Start and enable unbound",
+        service="unbound.service",
+        running=True,
+        enabled=True,
+    )
+
     # Deploy acmetool to have TLS certificates.
     deploy_acmetool(nginx_hook=True, domains=[mail_server, f"mta-sts.{mail_server}"])
 

cmdeploy/src/cmdeploy/cmdeploy.py

@@ -130,15 +130,7 @@ def test_cmd(args, out):
         out.check_call(f"{sys.executable} -m pip install deltachat")
 
     pytest_path = shutil.which("pytest")
-    pytest_args = [
-        pytest_path,
-        "cmdeploy/src/",
-        "-n4",
-        "-rs",
-        "-x",
-        "-vrx",
-        "--durations=5",
-    ]
+    pytest_args = [pytest_path, "cmdeploy/src/", "-n4", "-rs", "-x", "-vrx", "--durations=5"]
     if args.slow:
         pytest_args.append("--slow")
     ret = out.run_ret(pytest_args)
@@ -163,7 +155,7 @@ def fmt_cmd_options(parser):
 
 
 def fmt_cmd(args, out):
-    """Run formattting fixes (fuff and black) on all chatmail source code."""
+    """Run formattting fixes (ruff and black) on all chatmail source code."""
 
     sources = [str(importlib.resources.files(x)) for x in ("chatmaild", "cmdeploy")]
     black_args = [shutil.which("black")]

cmdeploy/src/cmdeploy/tests/online/test_2_deltachat.py

@@ -34,7 +34,7 @@ class TestEndToEndDeltaChat:
             Example input: 100M, 2.4T, 500 K
             """
             units = {"B": 1, "K": 2**10, "M": 2**20, "G": 2**30, "T": 2**40}
-            size = re.sub(r"([KMGT])", r" \1", limit.upper())
+            size = re.sub(r'([KMGT])', r' \1', limit.upper())
             number, unit = [string.strip() for string in size.split()]
             return int(float(number) * units[unit])
 

cmdeploy/src/cmdeploy/www.py

@@ -36,53 +36,6 @@ def build_webpages(src_dir, build_dir, config):
         print(traceback.format_exc())
 
 
-def timespan_to_english(timespan):
-    val = int(timespan[:-1])
-    c = timespan[-1].lower()
-    match c:
-        case "y":
-            return f"{val} years"
-        case "m":
-            return f"{val} months"
-        case "w":
-            return f"{val} weeks"
-        case "d":
-            return f"{val} days"
-        case "h":
-            return f"{val} hours"
-        case "c":
-            return f"{val} seconds"
-        case _:
-            raise ValueError(
-                c
-                + " is not a valid time unit. Try [y]ears, [w]eeks, [d]ays, or [h]ours"
-            )
-
-
-def int_to_english(number):
-    if number >= 0 and number <= 12:
-        a = [
-            "zero",
-            "one",
-            "two",
-            "three",
-            "four",
-            "five",
-            "six",
-            "seven",
-            "eight",
-            "nine",
-            "ten",
-            "eleven",
-            "twelve",
-        ]
-        return a[number]
-    elif number <= 50:
-        return str(number)
-    if number > 50:
-        return "more"
-
-
 def _build_webpages(src_dir, build_dir, config):
     mail_domain = config.mail_domain
     assert src_dir.exists(), src_dir
@@ -95,18 +48,6 @@ def _build_webpages(src_dir, build_dir, config):
     for path in src_dir.iterdir():
         if path.suffix == ".md":
             render_vars, content = prepare_template(path)
-            render_vars["username_min_length"] = int_to_english(
-                config.username_min_length
-            )
-            render_vars["username_max_length"] = int_to_english(
-                config.username_max_length
-            )
-            render_vars["password_min_length"] = int_to_english(
-                config.password_min_length
-            )
-            render_vars["delete_mails_after"] = timespan_to_english(
-                config.delete_mails_after
-            )
             target = build_dir.joinpath(path.stem + ".html")
 
             # recursive jinja2 rendering

scripts/initenv.sh

@@ -4,6 +4,3 @@ python3 -m venv venv
 
 venv/bin/pip install -e chatmaild 
 venv/bin/pip install -e cmdeploy
-
-source venv/bin/activate
-echo activated 'venv' python virtualenv environment containing "cmdeploy" tool

www/src/info.md

@@ -9,21 +9,10 @@ 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
-{% if username_min_length == username_max_length %}
-  *exactly* {{ username_min_length }}
-{% else %}
-  {{ username_min_length}}
-  {% if username_max_length == "more" %}
-    or more
-  {% else %}
-    to {{ username_max_length }}
-  {% endif %}
-{% endif %}
-  characters
-  and append `@{{config.mail_domain}}` to it.
+- `Address`: invent a word with *exactly* nine characters 
+   and append `@{{config.mail_domain}}` to it. 
 
-- `Password`: invent at least {{ password_min_length }} characters.
+- `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. 
@@ -35,11 +24,11 @@ The first login sets your password.
   {{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 {{ config.max_user_send_per_minute }} messages per minute.
+- You may send up to 60 messages per minute
 
-- Seen messages are removed {{ delete_mails_after }} after arriving on the server.
+- Seen messages are removed 40 days after arriving on the server
 
-- You can store up to [{{ config.max_mailbox_size }} messages on the server](https://delta.chat/en/help#what-happens-if-i-turn-on-delete-old-messages-from-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?