1#![no_std]
8#![warn(
9 missing_docs,
10 unreachable_patterns,
11 clippy::useless_conversion,
12 clippy::redundant_clone,
13 clippy::precedence
14)]
15
16extern crate fakealloc as alloc;
17
18mod actions;
19mod api;
20mod conntrack;
21mod context;
22mod logic;
23mod matchers;
24mod packets;
25mod state;
26
27use logic::nat::NatConfig;
28
29pub type ConntrackConnection<I, A, BT> = conntrack::Connection<I, NatConfig<I, A>, BT>;
31
32pub use actions::MarkAction;
33pub use api::FilterApi;
34pub use conntrack::{
35 ConnectionDirection, Table, TransportProtocol, Tuple,
36 WeakConnection as WeakConntrackConnection, WeakConnectionError,
37};
38pub use context::{
39 FilterBindingsContext, FilterBindingsTypes, FilterContext, FilterIpContext, NatContext,
40 SocketEgressFilterResult, SocketIngressFilterResult, SocketOpsFilter,
41 SocketOpsFilterBindingContext,
42};
43pub use logic::{
44 FilterHandler, FilterImpl, FilterTimerId, IngressVerdict, ProofOfEgressCheck, Verdict,
45};
46pub use matchers::{
47 AddressMatcher, AddressMatcherType, InterfaceMatcher, InterfaceProperties, PacketMatcher,
48 PortMatcher, TransportProtocolMatcher,
49};
50pub use packets::{
51 FilterIpExt, ForwardedPacket, IcmpMessage, IpPacket, MaybeTransportPacket,
52 MaybeTransportPacketMut, RawIpBody, TransportPacketSerializer, TxPacket,
53};
54pub use state::validation::{ValidRoutines, ValidationError};
55pub use state::{
56 Action, FilterIpMetadata, FilterMarkMetadata, Hook, IpRoutines, NatRoutines, Routine, Routines,
57 Rule, State, TransparentProxy, UninstalledRoutine,
58};
59
60#[cfg(any(test, feature = "testutils"))]
62pub mod testutil {
63 pub use crate::logic::testutil::NoopImpl;
64 pub use crate::packets::testutil::new_filter_egress_ip_packet;
65 use packet::FragmentedByteSlice;
66
67 use crate::{
68 FilterIpExt, IpPacket, SocketEgressFilterResult, SocketIngressFilterResult, SocketOpsFilter,
69 };
70 use netstack3_base::socket::SocketCookie;
71 use netstack3_base::{Marks, StrongDeviceIdentifier};
72
73 #[cfg(test)]
74 pub(crate) trait TestIpExt:
75 crate::context::testutil::TestIpExt + crate::packets::testutil::internal::TestIpExt
76 {
77 }
78
79 #[cfg(test)]
80 impl<I> TestIpExt for I where
81 I: crate::context::testutil::TestIpExt + crate::packets::testutil::internal::TestIpExt
82 {
83 }
84
85 pub struct NoOpSocketOpsFilter;
87
88 impl<D: StrongDeviceIdentifier, T> SocketOpsFilter<D, T> for NoOpSocketOpsFilter {
89 fn on_egress<I: FilterIpExt, P: IpPacket<I>>(
90 &self,
91 _packet: &P,
92 _device: &D,
93 _tx_metadata: &T,
94 _marks: &Marks,
95 ) -> SocketEgressFilterResult {
96 SocketEgressFilterResult::Pass { congestion: false }
97 }
98
99 fn on_ingress(
100 &self,
101 _packet: &FragmentedByteSlice<'_, &[u8]>,
102 _device: &D,
103 _cookie: SocketCookie,
104 _marks: &Marks,
105 ) -> SocketIngressFilterResult {
106 SocketIngressFilterResult::Accept
107 }
108 }
109}