8 changed files with 73 additions and 88 deletions
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@ -1,6 +0,0 @@
-version: 2
-updates:
-  - package-ecosystem: pip
-    directory: /
-    schedule:
-      interval: daily
--- a/README.md
+++ b/README.md
@ -63,9 +63,9 @@ Minimal JSON example:
 Full YAML example:

 ~~~ yaml
-# name of the network namespace where the interface is moved into, if null the default namespace is used
+# name of the network namespace
 name: ns-example
-# namespace where the interface is initialized, if null the default namespace is used
+# namespace where the interface is initialized, defaults to the main/default namespace
 base_netns: null
 # if false, the netns itself won't be created or deleted, just the interfaces inside it
 managed: true
@ -161,12 +161,6 @@ curl -o /etc/systemd/system/wg-netns@.service https://raw.githubusercontent.com/
 systemctl enable --now wg-netns@example.service
 ~~~

-If you are using SELinux, you have to change the SELinux context label, e.g. to `bin_t`, otherwise the service will not find the executable.
-
-~~~ bash
-chcon -t bin_t /root/.local/bin/wg-netns
-~~~
-
 ### Podman Integration

 A podman container can be easily attached to a network namespace created by `wg-netns`.
--- a/extras/wg-netns@.service
+++ b/extras/wg-netns@.service
@ -14,6 +14,8 @@ RemainAfterExit=yes
 WorkingDirectory=%E/wireguard
 ConfigurationDirectory=wireguard
 ConfigurationDirectoryMode=0700
+ReadOnlyPaths=%E/wireguard
+ReadWritePaths=%E/netns

 CapabilityBoundingSet=CAP_NET_ADMIN CAP_SYS_ADMIN
 LimitNOFILE=4096
@ -21,8 +23,19 @@ LimitNPROC=512
 LockPersonality=true
 MemoryDenyWriteExecute=true
 NoNewPrivileges=true
+PrivateDevices=true
+PrivateMounts=true
+PrivateTmp=true
+ProcSubset=pid
 ProtectClock=true
+ProtectControlGroups=true
+ProtectHome=true
 ProtectHostname=true
+ProtectKernelLogs=true
+ProtectKernelModules=true
+ProtectKernelTunables=true
+ProtectProc=noaccess
+ProtectSystem=strict
 RemoveIPC=true
 RestrictAddressFamilies=AF_INET AF_INET6 AF_NETLINK
 RestrictNamespaces=mnt net
--- a/extras/wg-resolve/config.env
+++ b/extras/wg-resolve/config.env
@ -1,5 +1,3 @@
-# network namespace name
-WG_NAMESPACE=netns0
 # local wireguard interface name
 WG_INTERFACE=wg0
 # server wireguard public key
--- a/extras/wg-resolve/wg-resolve.sh
+++ b/extras/wg-resolve/wg-resolve.sh
@ -1,12 +1,7 @@
 #!/bin/sh
 set -eu

-# dependencies: cut, getent, ip, ping and wg
-
-WG_ENDPOINT_DOMAIN="${WG_ENDPOINT%%:*}"
-WG_ENDPOINT_PORT="${WG_ENDPOINT##*:}"
-
-if ! ip netns exec "$WG_NAMESPACE" ping -q -c 1 -W "${WG_TIMEOUT:-5}" "$WG_GATEWAY"; then
+if ! ping -q -c 1 -W "${WG_TIMEOUT:-5}" "$WG_GATEWAY"; then
    echo 'probe failed, resolving endpoint'
-    ip netns exec "$WG_NAMESPACE" wg set "$WG_INTERFACE" peer "$WG_PEER" endpoint "$(getent hosts -- "$WG_ENDPOINT_DOMAIN" | cut -d ' ' -f 1):$WG_ENDPOINT_PORT"
+    wg set "$WG_INTERFACE" peer "$WG_PEER" endpoint "$WG_ENDPOINT"
 fi
--- a/poetry.lock
+++ b/poetry.lock
@ -1,52 +1,53 @@
-# This file is automatically @generated by Poetry 1.5.1 and should not be changed by hand.
+# This file is automatically @generated by Poetry 1.4.2 and should not be changed by hand.

 [[package]]
 name = "pyyaml"
-version = "6.0.1"
+version = "6.0"
 description = "YAML parser and emitter for Python"
+category = "main"
 optional = false
 python-versions = ">=3.6"
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+    {file = "PyYAML-6.0.tar.gz", hash = "sha256:68fb519c14306fec9720a2a5b45bc9f0c8d1b9c72adf45c37baedfcd949c35a2"},
 ]

 [metadata]
--- a/pyproject.toml
+++ b/pyproject.toml
@ -1,6 +1,6 @@
 [tool.poetry]
 name = "wgnetns"
-version = "2.3.4"
+version = "2.3.0"
 description = "wg-quick for network namespaces"
 authors = ["dadevel <dadevel@disroot.org>"]
 license = "MIT"
--- a/wgnetns/main.py
+++ b/wgnetns/main.py
@ -15,7 +15,6 @@ try:
    YAML_SUPPORTED = True
 except ModuleNotFoundError:
    YAML_SUPPORTED = False
-    yaml = NotImplemented

 WIREGUARD_DIR = Path('/etc/wireguard')
 NETNS_DIR = Path('/etc/netns')
@ -65,10 +64,6 @@ def cli(args):
    parser = subparsers.add_parser('switch', help='open shell in namespace')
    parser.add_argument('netns', metavar='NETNS', help='network namespace name')

-    parser = subparsers.add_parser('exec', help='run command in namespace')
-    parser.add_argument('netns', metavar='NETNS', help='network namespace name')
-    parser.add_argument('command', nargs='+', help='command')
-
    opts = entrypoint.parse_args(args)

    try:
@ -95,14 +90,10 @@ def cli(args):
        namespace.teardown(check=not opts.force)
    elif opts.action == 'list':
        output = ip('-json', 'netns', capture=True)
-        if not output:
-            return
        data = json.loads(output)
        print('\n'.join(item['name'] for item in data))
    elif opts.action == 'switch':
        os.execvp('sudo', ['ip', 'ip', 'netns', 'exec', opts.netns, 'sudo', '-u', getpass.getuser(), '-D', Path.cwd().as_posix(), os.environ['SHELL'], '-i'])
-    elif opts.action == 'exec':
-        os.execvp('sudo', ['ip', 'ip', 'netns', 'exec', opts.netns, 'sudo', '-u', getpass.getuser(), '-D', Path.cwd().as_posix(), *opts.command])
    else:
        raise RuntimeError('congratulations, you reached unreachable code')

@ -179,17 +170,17 @@ class Interface:
        if self.private_key:
            wg('set', self.name, 'private-key', '/dev/stdin', stdin=self.private_key, netns=self.base_netns)

-    def _assign_namespace(self, namespace: str|None) -> None:
-        ip('link', 'set', self.name, 'netns', namespace if namespace else '1', netns=self.base_netns)
+    def _assign_namespace(self, namespace: str) -> None:
+        ip('link', 'set', self.name, 'netns', namespace, netns=self.base_netns)

-    def _assign_addresses(self, namespace: str|None) -> None:
+    def _assign_addresses(self, namespace: str) -> None:
        for address in self.address:
            ip('-6' if ':' in address else '-4', 'address', 'add', address, 'dev', self.name, netns=namespace)

-    def _bring_up(self, namespace: str|None) -> None:
+    def _bring_up(self, namespace: str) -> None:
        ip('link', 'set', 'dev', self.name, 'mtu', self.mtu, 'up', netns=namespace)

-    def _create_routes(self, namespace: str|None):
+    def _create_routes(self, namespace: str):
        for peer in self.peers:
            networks = peer.routes if peer.routes is not None else peer.allowed_ips
            for network in networks:
@ -224,8 +215,8 @@ class ScriptletItem:
        host_namespace = bool(data.pop('host_namespace', None))
        return cls(**data, host_namespace=host_namespace)

-    def run(self, netns: str|None):
-        if self.host_namespace or not netns:
+    def run(self, netns: str):
+        if self.host_namespace:
            host_eval(self.command)
        else:
            ip_netns_eval(self.command, netns=netns)
@ -254,14 +245,14 @@ class Scriptlet:
        item = ScriptletItem.from_str(data)
        return cls(items=[item])

-    def run(self, netns: str|None):
+    def run(self, netns: str):
        for item in self.items:
            item.run(netns=netns)


@dataclasses.dataclass
 class Namespace:
-    name: str|None
+    name: str
    pre_up: Optional[Scriptlet] = None
    post_up: Optional[Scriptlet] = None
    pre_down: Optional[Scriptlet] = None
@ -309,7 +300,7 @@ class Namespace:
        return cls(**data, **scriptlets, interfaces=interfaces)  # type: ignore

    def setup(self) -> Namespace:
-        if self.managed and self.name:
+        if self.managed:
            self._create()
            self._write_resolvconf()
        if self.pre_up:
@ -345,7 +336,6 @@ class Namespace:

    @property
    def _resolvconf_path(self) -> Path:
-        assert self.name
        return NETNS_DIR/self.name/'resolv.conf'

    def _write_resolvconf(self) -> None:
@ -378,8 +368,8 @@ def ip_netns_exec(*args, netns: str, stdin: str|None = None, check=True, capture
    return ip('netns', 'exec', netns, *args, stdin=stdin, check=check, capture=capture)


-def ip(*args, stdin: str|None = None, netns: str|None =None, check=True, capture=False) -> str:
-    return run('ip', *(['-n', netns] if netns else []), *args, stdin=stdin, check=check, capture=capture)
+def ip(*args, stdin: str|None = None, netns=None, check=True, capture=False) -> str:
+    return run('ip', *([] if netns is None else ['-n', netns]), *args, stdin=stdin, check=check, capture=capture)


 def host_eval(*args, stdin: str|None = None, check=True, capture=False) -> str: