Add TLS support to resolver, implement DBus ifaces

.gitignore

@@ -1,6 +1,9 @@
 # SPDX-FileCopyrightText: 2022 Matteo Settenvini <matteo.settenvini@montecristosoftware.eu>
 # SPDX-License-Identifier: CC0-1.0
 
+*.orig
+*~
+
 /build
 /target
 /Cargo.lock

Cargo.toml

@@ -22,6 +22,7 @@ name = "nss_malcontent"
 bindgen = "0.60"
 
 [dev-dependencies]
+event-listener = "2.5"
 futures-util = "0.3"
 rusty-hook = "0.11"
 rusty-forkfork = "0.4"
@@ -30,12 +31,14 @@ tokio = { version = "1", features = ["rt", "sync", "macros", "time"] }
 
 [dependencies]
 anyhow = "1.0"
-const_format = "0.2"
+gethostname = "0.2"
 libc = "0.2"
 once_cell = "1.13"
 log = "0.4"
 nix = { version = "0.24", features = ["socket", "user", "sched"] }
+serde = "1.0"
 tokio = { version = "1", features = ["rt"] }
-trust-dns-resolver = "0.21"
+trust-dns-resolver = { version = "0.21", features = ["dns-over-rustls"] }
 trust-dns-proto = "0.21"
 zbus = { version = "3.0", default-features = false, features = ["tokio"] }
+zvariant = "3.6"

deny.toml

@@ -113,6 +113,7 @@ exceptions = [
     # list
     #{ allow = ["Zlib"], name = "adler32", version = "*" },
     { allow = ["Unicode-DFS-2016"], name = "unicode-ident", version = "*" },
+    { allow = ["OpenSSL"], name = "ring", version = "*" },
 ]
 
 # Some crates don't have (easily) machine readable licensing information,
@@ -135,6 +136,13 @@ exceptions = [
     #{ path = "LICENSE", hash = 0xbd0eed23 }
 #]
 
+[[licenses.clarify]]
+name = "ring"
+expression = "MIT AND ISC AND OpenSSL"
+license-files = [
+    { path = "LICENSE", hash = 0xbd0eed23 },
+]
+
 [licenses.private]
 # If true, ignores workspace crates that aren't published, or are only
 # published to private registries.

src/constants.rs

@@ -1,13 +0,0 @@
-// SPDX-FileCopyrightText: 2022 Matteo Settenvini <matteo.settenvini@montecristosoftware.eu>
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-use const_format::concatcp;
-
-#[allow(dead_code)]
-const DBUS_INTERFACE: &str = "com.endlessm.ParentalControls.Dns";
-
-#[allow(dead_code)]
-const DBUS_OBJECT_PATH: &str = "com/endlessm/ParentalControls/Dns";
-
-#[allow(dead_code)]
-const DBUS_GET_RESTRICTIONS_METHOD: &str = concatcp!(DBUS_INTERFACE, ".", "GetRestrictions");

src/gethostbyname.rs

@@ -4,7 +4,7 @@
 use {
     crate::helpers::{set_if_valid, write_record_name_to_buf, write_vector_to_buf},
     crate::nss_bindings::{gaih_addrtuple, nss_status, HErrno},
-    crate::policy_checker::{PolicyChecker as _, POLICY_CHECKER},
+    crate::policy_checker::POLICY_CHECKER,
     libc::{c_char, c_int, hostent, size_t, AF_INET, AF_INET6},
     nix::errno,
     nix::errno::Errno,
@@ -46,7 +46,7 @@ pub async unsafe fn with(args: &mut Args) -> nss_status {
     set_if_valid(args.errnop, errno::from_i32(0));
     set_if_valid(args.h_errnop, HErrno::Success);
 
-    match POLICY_CHECKER.resolver(None) {
+    match POLICY_CHECKER.resolver(None).await {
         Ok(None) => {
             // no restrictions for user, the next NSS module will decide
             nss_status::NSS_STATUS_NOTFOUND

src/lib.rs

@@ -5,7 +5,6 @@
 #![allow(non_camel_case_types)]
 #![allow(non_snake_case)]
 
-mod constants;
 mod gethostbyaddr;
 mod gethostbyname;
 mod helpers;

src/policy_checker.rs

@@ -1,102 +0,0 @@
-// SPDX-FileCopyrightText: 2022 Matteo Settenvini <matteo.settenvini@montecristosoftware.eu>
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-use {
-    anyhow::Result,
-    nix::unistd::{getuid, Uid},
-    once_cell::sync::Lazy,
-    std::collections::HashMap,
-    std::net::{IpAddr, Ipv4Addr, Ipv6Addr, SocketAddr},
-    std::sync::{Arc, RwLock},
-    trust_dns_resolver::config as dns_config,
-    trust_dns_resolver::TokioAsyncResolver,
-};
-
-pub type Restrictions<'a> = &'a [IpAddr];
-
-pub trait PolicyChecker {
-    fn resolver(&self, user: Option<Uid>) -> Result<Option<Arc<TokioAsyncResolver>>>;
-}
-
-pub static POLICY_CHECKER: Lazy<MalcontentPolicyChecker> =
-    Lazy::new(|| MalcontentPolicyChecker::new());
-
-static CLOUDFLARE_PARENTALCONTROL_ADDRS: Lazy<Vec<IpAddr>> = Lazy::new(|| {
-    vec![
-        IpAddr::V4(Ipv4Addr::new(1, 1, 1, 3)),
-        IpAddr::V4(Ipv4Addr::new(1, 0, 0, 3)),
-        IpAddr::V6(Ipv6Addr::new(2606, 4700, 4700, 0, 0, 0, 0, 1113)),
-        IpAddr::V6(Ipv6Addr::new(2606, 4700, 4700, 0, 0, 0, 0, 1003)),
-    ]
-});
-
-// TODO: accept notifications about config changes
-pub struct MalcontentPolicyChecker {
-    resolvers: RwLock<HashMap<Uid, Option<Arc<TokioAsyncResolver>>>>,
-}
-
-impl MalcontentPolicyChecker {
-    pub fn new() -> Self {
-        Self {
-            resolvers: RwLock::new(HashMap::new()),
-        }
-    }
-
-    fn restrictions<'a>(&'a self, user: Uid) -> Result<Option<Restrictions<'a>>> {
-        if user.is_root() {
-            return Ok(None);
-        };
-
-        // TODO: for now, hardcoded DNS records, later go
-        // through D-Bus to malcontent and ask about user.
-
-        Ok(Some(CLOUDFLARE_PARENTALCONTROL_ADDRS.as_slice()))
-    }
-}
-
-impl PolicyChecker for MalcontentPolicyChecker {
-    fn resolver(&self, user: Option<Uid>) -> Result<Option<Arc<TokioAsyncResolver>>> {
-        let user = user.unwrap_or_else(|| getuid());
-        {
-            let ro_resolvers = self.resolvers.read().unwrap();
-            if let Some(resolver) = ro_resolvers.get(&user) {
-                return Ok(resolver.clone());
-            }
-        }
-
-        {
-            let mut rw_resolvers = self.resolvers.write().unwrap();
-            if rw_resolvers.contains_key(&user) {
-                return self.resolver(Some(user));
-            }
-
-            let resolver = match self.restrictions(user)? {
-                Some(addrs) => {
-                    let resolver_config =
-                        addrs
-                            .iter()
-                            .fold(dns_config::ResolverConfig::new(), |mut config, addr| {
-                                config.add_name_server(dns_config::NameServerConfig {
-                                    socket_addr: SocketAddr::new(*addr, 53),
-                                    protocol: dns_config::Protocol::Udp,
-                                    tls_dns_name: None,
-                                    trust_nx_responses: true,
-                                    bind_addr: None,
-                                });
-                                config
-                            });
-
-                    let resolver = TokioAsyncResolver::tokio(
-                        resolver_config,
-                        dns_config::ResolverOpts::default(),
-                    )?;
-                    Some(Arc::new(resolver))
-                }
-                None => None,
-            };
-            rw_resolvers.insert(user, resolver);
-        }
-
-        self.resolver(Some(user))
-    }
-}

src/policy_checker/dbus.rs

@@ -0,0 +1,26 @@
+// SPDX-FileCopyrightText: 2022 Matteo Settenvini <matteo.settenvini@montecristosoftware.eu>
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+use {
+    serde::{Deserialize, Serialize},
+    std::net::IpAddr,
+    zbus::{dbus_proxy, Result},
+};
+
+#[dbus_proxy(
+    default_service = "com.endlessm.ParentalControls",
+    interface = "com.endlessm.ParentalControls.Dns",
+    default_path = "/com/endlessm/ParentalControls/Dns",
+    gen_blocking = false
+)]
+trait MalcontentDns {
+    fn get_restrictions(&self, uid: u32) -> Result<Restrictions>;
+}
+
+#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize, zvariant::Type)]
+pub struct Restriction {
+    pub ip: IpAddr,
+    pub hostname: String,
+}
+
+pub type Restrictions = Vec<Restriction>;

src/policy_checker/mod.rs

@@ -0,0 +1,111 @@
+// SPDX-FileCopyrightText: 2022 Matteo Settenvini <matteo.settenvini@montecristosoftware.eu>
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+mod dbus;
+
+use {
+    self::dbus::*,
+    anyhow::Result,
+    nix::unistd::{getuid, Uid},
+    once_cell::sync::Lazy,
+    std::collections::HashMap,
+    std::net::{SocketAddr, TcpStream},
+    std::sync::{Arc, RwLock},
+    trust_dns_proto::rr::domain::Name as DomainName,
+    trust_dns_resolver::config as dns_config,
+    trust_dns_resolver::TokioAsyncResolver,
+};
+
+pub use self::dbus::{Restriction, Restrictions};
+
+const DNS_UDP_PORT: u16 = 53;
+const DNS_TLS_PORT: u16 = 853;
+
+pub static POLICY_CHECKER: Lazy<PolicyChecker> = Lazy::new(|| PolicyChecker::new());
+
+// TODO: accept notifications about config changes
+pub struct PolicyChecker {
+    resolvers: RwLock<HashMap<Uid, Option<Arc<TokioAsyncResolver>>>>,
+}
+
+impl PolicyChecker {
+    pub fn new() -> Self {
+        Self {
+            resolvers: RwLock::new(HashMap::new()),
+        }
+    }
+
+    async fn restrictions<'a>(&'a self, user: Uid) -> Result<Restrictions> {
+        if user.is_root() {
+            return Ok(vec![]);
+        };
+
+        let connection = zbus::Connection::session().await?;
+        let proxy = MalcontentDnsProxy::new(&connection).await?;
+        Ok(proxy.get_restrictions(user.as_raw()).await?)
+    }
+
+    pub async fn resolver(&self, user: Option<Uid>) -> Result<Option<Arc<TokioAsyncResolver>>> {
+        let user = user.unwrap_or_else(|| getuid());
+
+        // Check if already cached
+        {
+            let ro_resolvers = self.resolvers.read().unwrap();
+            if let Some(resolver) = ro_resolvers.get(&user) {
+                return Ok(resolver.clone());
+            }
+        }
+
+        // Else, initialize and cache it
+        {
+            let mut rw_resolvers = self.resolvers.write().unwrap();
+            if let Some(resolver) = rw_resolvers.get(&user) {
+                return Ok(resolver.clone());
+            }
+
+            // try first to prime resolver with DoT implementation,
+            // fallback to unencrypted only if not available.
+            let restrictions = self.restrictions(user).await?;
+            let resolver = if !restrictions.is_empty() {
+                let resolver = TokioAsyncResolver::tokio(
+                    resolver_config_for(restrictions),
+                    dns_config::ResolverOpts::default(),
+                )?;
+                Some(Arc::new(resolver))
+            } else {
+                None
+            };
+
+            rw_resolvers.insert(user, resolver.clone());
+            Ok(resolver)
+        }
+    }
+}
+
+fn resolver_config_for(restrictions: Vec<Restriction>) -> dns_config::ResolverConfig {
+    use dns_config::NameServerConfigGroup as NsConfig;
+
+    let resolver_config_group =
+        restrictions
+            .into_iter()
+            .fold(NsConfig::new(), |mut config, restr| {
+                let new_config =
+                    if TcpStream::connect(SocketAddr::new(restr.ip, DNS_TLS_PORT)).is_ok() {
+                        NsConfig::from_ips_tls(&[restr.ip], DNS_TLS_PORT, restr.hostname, true)
+                    } else {
+                        NsConfig::from_ips_clear(&[restr.ip], DNS_UDP_PORT, true)
+                    };
+
+                config.merge(new_config);
+                config
+            });
+
+    let basename = gethostname::gethostname()
+        .as_os_str()
+        .to_str()
+        .map(|hn| DomainName::from_labels(hn.split('.')).ok())
+        .flatten()
+        .map(|hn| hn.base_name());
+
+    dns_config::ResolverConfig::from_parts(basename, vec![], resolver_config_group)
+}

tests/common/dbus.rs

@@ -0,0 +1,77 @@
+// SPDX-FileCopyrightText: 2022 Matteo Settenvini <matteo.settenvini@montecristosoftware.eu>
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+include!(concat!(
+    env!("CARGO_MANIFEST_DIR"),
+    "/src/policy_checker/dbus.rs"
+));
+
+use {
+    event_listener::{Event, EventListener},
+    nix::unistd::Uid,
+    std::collections::HashMap,
+    zbus::dbus_interface,
+};
+
+pub struct MalcontentDBusMock {
+    responses: HashMap<Uid, Vec<Restrictions>>,
+    invocations_left: usize,
+    finished: Event,
+}
+
+#[dbus_interface(name = "com.endlessm.ParentalControls.Dns")]
+impl MalcontentDBusMock {
+    fn get_restrictions(&mut self, user_id: u32) -> Restrictions {
+        let answers = self
+            .responses
+            .get_mut(&Uid::from_raw(user_id))
+            .expect(&format!(
+                "MockError: No mocked invocations available for user with id {}",
+                user_id
+            ));
+        let restrictions = answers.pop().expect(&format!(
+            "MockError: DBus mock is saturated for user with id {}",
+            user_id
+        ));
+        self.invocations_left -= 1;
+        if self.invocations_left == 0 {
+            self.finished.notify(1);
+        }
+        restrictions
+    }
+}
+
+impl MalcontentDBusMock {
+    pub fn new(mut responses: HashMap<Uid, Vec<Restrictions>>) -> Self {
+        let responses_size: usize = responses.values().map(|v| v.len()).sum();
+        for r in responses.values_mut() {
+            r.reverse(); // we pop responses from the back, so...
+        }
+
+        let ret = Self {
+            responses,
+            invocations_left: responses_size,
+            finished: Event::new(),
+        };
+
+        if ret.invocations_left == 0 {
+            ret.finished.notify(1);
+        }
+
+        ret
+    }
+
+    pub fn waiter(&self) -> EventListener {
+        self.finished.listen()
+    }
+}
+
+impl Drop for MalcontentDBusMock {
+    fn drop(&mut self) {
+        assert_eq!(
+            self.invocations_left, 0,
+            "MockError: During teardown, {} invocations are still left on the mock object",
+            self.invocations_left
+        );
+    }
+}

tests/common/mod.rs

@@ -7,11 +7,12 @@
 #![allow(dead_code)]
 
 include!(concat!(env!("OUT_DIR"), "/bindings.rs"));
-include!(concat!(env!("CARGO_MANIFEST_DIR"), "/src/constants.rs"));
+
+mod dbus;
 
 use {
+    self::dbus::MalcontentDBusMock,
     anyhow::{anyhow, bail, ensure, Result},
-    futures_util::TryStreamExt,
     libc::{freeaddrinfo, gai_strerror, getaddrinfo},
     nix::sys::socket::{SockaddrLike as _, SockaddrStorage},
     nix::unistd::Uid,
@@ -27,6 +28,8 @@ use {
     tokio::task::JoinHandle,
 };
 
+pub use self::dbus::{Restriction, Restrictions};
+
 // Adapted from rusty_forkfork (which inherits it from rusty_fork)
 // to allow a custom pre-fork function
 #[macro_export]
@@ -179,69 +182,16 @@ fn convert_addrinfo(sa: &SockaddrStorage) -> Result<IpAddr> {
     }
 }
 
-pub type Restrictions = Vec<IpAddr>;
-
 pub fn mock_dbus(responses: HashMap<Uid, Vec<Restrictions>>) -> JoinHandle<Result<()>> {
-    async fn dbus_loop(mut responses: HashMap<Uid, Vec<Restrictions>>) -> Result<()> {
+    async fn dbus_loop(responses: HashMap<Uid, Vec<Restrictions>>) -> Result<()> {
-        use zbus::MessageType::*;
+        let mock = MalcontentDBusMock::new(responses);
-
+        let waiter = mock.waiter();
-        let mut responses_size: usize = responses.values().map(|v| v.len()).sum();
+        let _connection = zbus::ConnectionBuilder::session()?
-        for r in responses.values_mut() {
+            .serve_at("/com/endlessm/ParentalControls/Dns", mock)?
-            r.reverse(); // we pop responses from the back, so...
+            .build()
-        }
+            .await?;
-
-        let connection = zbus::ConnectionBuilder::session()?.build().await?;
-        let mut stream = zbus::MessageStream::from(&connection);
-        while responses_size > 0 {
-            let msg = stream
-                .try_next()
-                .await?
-                .ok_or(anyhow!("Unparseable DBus message"))?;
-
-            if msg.header()?.message_type()? == MethodCall
-                && msg
-                    .interface()
-                    .ok_or(anyhow!("Invoked method has no interface"))?
-                    == DBUS_INTERFACE
-                && msg
-                    .member()
-                    .ok_or(anyhow!("Invoked method has no member"))?
-                    == DBUS_GET_RESTRICTIONS_METHOD
-            {
-                let user_id: u32 = msg.body()?;
-                match responses.get_mut(&Uid::from_raw(user_id)) {
-                    Some(answers) => match answers.pop() {
-                        Some(a) => {
-                            responses_size = responses_size - 1;
-                            let ips: Vec<String> = a.into_iter().map(|ip| ip.to_string()).collect();
-                            connection.reply(&msg, &ips).await
-                        }
-                        None => {
-                            connection
-                                .reply_error(
-                                    &msg,
-                                    "MockExhausted",
-                                    &format!("DBus mock is saturated for user with id {}", user_id),
-                                )
-                                .await
-                        }
-                    },
-                    None => {
-                        connection
-                            .reply_error(
-                                &msg,
-                                "MockExhausted",
-                                &format!(
-                                    "No mocked invocations available for user with id {}",
-                                    user_id
-                                ),
-                            )
-                            .await
-                    }
-                }?;
-            }
-        }
 
+        waiter.wait();
         Ok(())
     }
 

tests/integration_test.rs

@@ -4,23 +4,35 @@
 mod common;
 
 use {
-    crate::common::Eai,
+    crate::common::{Eai, Restriction, Restrictions},
     anyhow::Result,
     libc::{freeaddrinfo, gai_strerror, getaddrinfo},
     nix::unistd::getuid,
     once_cell::sync::Lazy,
     std::collections::HashMap,
     std::net::{IpAddr, Ipv4Addr, Ipv6Addr},
-    //std::time::Duration,
+    std::time::Duration,
-    //tokio::time::timeout,
+    tokio::time::timeout,
 };
 
-static CLOUDFLARE_PARENTALCONTROL_ADDRS: Lazy<Vec<IpAddr>> = Lazy::new(|| {
+static CLOUDFLARE_PARENTALCONTROL_ADDRS: Lazy<Restrictions> = Lazy::new(|| {
     vec![
-        IpAddr::V4(Ipv4Addr::new(1, 1, 1, 3)),
+        Restriction {
-        IpAddr::V4(Ipv4Addr::new(1, 0, 0, 3)),
+            ip: IpAddr::V4(Ipv4Addr::new(1, 1, 1, 3)),
-        IpAddr::V6(Ipv6Addr::new(2606, 4700, 4700, 0, 0, 0, 0, 1113)),
+            hostname: "cloudflare-dns.com".into(),
-        IpAddr::V6(Ipv6Addr::new(2606, 4700, 4700, 0, 0, 0, 0, 1003)),
+        },
+        Restriction {
+            ip: IpAddr::V4(Ipv4Addr::new(1, 0, 0, 3)),
+            hostname: "cloudflare-dns.com".into(),
+        },
+        Restriction {
+            ip: IpAddr::V6(Ipv6Addr::new(2606, 4700, 4700, 0, 0, 0, 0, 1113)),
+            hostname: "cloudflare-dns.com".into(),
+        },
+        Restriction {
+            ip: IpAddr::V6(Ipv6Addr::new(2606, 4700, 4700, 0, 0, 0, 0, 1003)),
+            hostname: "cloudflare-dns.com".into(),
+        },
     ]
 });
 
@@ -36,7 +48,7 @@ fork_test! {
     fn application_dns_is_nxdomain() -> Result<()> {
         common::setup()?;
         tokio::runtime::Runtime::new().unwrap().block_on(async {
-            let _dbus = common::mock_dbus(HashMap::from([(
+            let dbus = common::mock_dbus(HashMap::from([(
                 getuid(),
                 vec![CLOUDFLARE_PARENTALCONTROL_ADDRS.clone()],
             )]));
@@ -61,25 +73,26 @@ fork_test! {
                 freeaddrinfo(addr);
             };
 
-            //timeout(Duration::from_secs(1), dbus).await??
+            timeout(Duration::from_secs(1), dbus).await??
-            Ok(())
         })
     }
 
     #[test]
     fn getaddrinfo_resolution() -> Result<()> {
         common::setup()?;
+
+        const HOSTNAME: &str = "gnome.org";
+
         tokio::runtime::Runtime::new().unwrap().block_on(async {
-            let _dbus = common::mock_dbus(HashMap::from([(
+            let dbus = common::mock_dbus(HashMap::from([(
                 getuid(),
                 vec![CLOUDFLARE_PARENTALCONTROL_ADDRS.clone()],
             )]));
 
-            let hostname = std::ffi::CString::new("gnome.org").unwrap();
             unsafe {
                 let mut addr = std::ptr::null_mut();
                 let getaddrinfo_status = getaddrinfo(
-                    hostname.as_ptr(),
+                    std::ffi::CString::new(HOSTNAME)?.as_ptr(),
                     std::ptr::null(),
                     std::ptr::null(),
                     &mut addr,
@@ -95,8 +108,7 @@ fork_test! {
                 freeaddrinfo(addr);
             };
 
-            //timeout(Duration::from_secs(1), dbus).await??
+            timeout(Duration::from_secs(1), dbus).await??
-            Ok(())
         })
     }
 
@@ -105,48 +117,64 @@ fork_test! {
     fn wikipedia_is_unrestricted() -> Result<()> {
         common::setup()?;
 
+        const HOSTNAME: &str = "wikipedia.org";
+
         tokio::runtime::Runtime::new().unwrap().block_on(async {
-            let _dbus = common::mock_dbus(HashMap::from([(
-                getuid(),
-                vec![CLOUDFLARE_PARENTALCONTROL_ADDRS.clone()],
-            )]));
-
-            const HOSTNAME: &str = "wikipedia.org";
-
             for family in [libc::AF_INET, libc::AF_INET6] {
+                let dbus = common::mock_dbus(HashMap::from([(
+                    getuid(),
+                    vec![CLOUDFLARE_PARENTALCONTROL_ADDRS.clone()],
+                )]));
+
                 let system_addr = common::resolve_with_system(family, HOSTNAME)?;
                 let our_addr = common::resolve_with_module(family, HOSTNAME)?;
                 assert_eq!(system_addr, our_addr);
-            }
 
-            //timeout(Duration::from_secs(1), dbus).await??
+                timeout(Duration::from_secs(1), dbus).await???;
+            }
             Ok(())
         })
     }
 
     #[test]
-    fn adultsite_is_restricted() -> Result<()> {
+    fn adultsite_is_restricted_ipv4() -> Result<()> {
         common::setup()?;
 
+        const HOSTNAME: &str = "nudity.testcategory.com";
+
         tokio::runtime::Runtime::new().unwrap().block_on(async {
-            let _dbus = common::mock_dbus(HashMap::from([(
+            let dbus = common::mock_dbus(HashMap::from([(
                 getuid(),
                 vec![CLOUDFLARE_PARENTALCONTROL_ADDRS.clone()],
             )]));
 
-            const HOSTNAME: &str = "pornhub.com";
             let system_addr = common::resolve_with_system(libc::AF_INET, HOSTNAME)?;
             let our_addr = common::resolve_with_module(libc::AF_INET, HOSTNAME)?;
             assert_ne!(system_addr, our_addr);
             assert_eq!(our_addr, IpAddr::V4(Ipv4Addr::UNSPECIFIED));
 
+            timeout(Duration::from_secs(1), dbus).await??
+        })
+    }
+
+    #[test]
+    fn adultsite_is_restricted_ipv6() -> Result<()> {
+        common::setup()?;
+
+        const HOSTNAME: &str = "nudity.testcategory.com";
+
+        tokio::runtime::Runtime::new().unwrap().block_on(async {
+            let dbus = common::mock_dbus(HashMap::from([(
+                getuid(),
+                vec![CLOUDFLARE_PARENTALCONTROL_ADDRS.clone()],
+            )]));
+
             let system_addr = common::resolve_with_system(libc::AF_INET6, HOSTNAME)?;
             let our_addr = common::resolve_with_module(libc::AF_INET6, HOSTNAME)?;
             assert_ne!(system_addr, our_addr);
             assert_eq!(our_addr, IpAddr::V6(Ipv6Addr::UNSPECIFIED));
 
-            //timeout(Duration::from_secs(1), dbus).await??
+            timeout(Duration::from_secs(1), dbus).await??
-            Ok(())
         })
     }
 
@@ -155,20 +183,17 @@ fork_test! {
     fn privileged_user_bypasses_restrictions() -> Result<()> {
         common::setup()?;
 
+        const HOSTNAME: &str = "nudity.testcategory.com";
+
         tokio::runtime::Runtime::new().unwrap().block_on(async {
-            let _dbus = common::mock_dbus(HashMap::from([(getuid(), vec![ /* no restriction */])]));
-
-            const HOSTNAME: &str = "pornhub.com";
-
             for family in [libc::AF_INET, libc::AF_INET6] {
+                let dbus = common::mock_dbus(HashMap::from([(getuid(), vec![ /* no restriction */])]));
                 let system_addr = common::resolve_with_system(family, HOSTNAME)?;
                 let our_addr = common::resolve_with_module(family, HOSTNAME)?;
                 assert_eq!(system_addr, our_addr);
+                timeout(Duration::from_secs(1), dbus).await???
             }
-
-            //timeout(Duration::from_secs(1), dbus).await??
             Ok(())
         })
     }
-
 }