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feat: symmetric hash, drop events, GeoIP/DNS, performance & bug fixes (#15)

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* fix: ML formula alignment, dependency cleanup, and code quality

- Restore correct MSE denominator (ae_feature_names.len())
- Align feature extraction with CICFlowMeter: payload bytes, sample std (N-1),
  min_seg_size_forward without payload filter, act_data_pkt_fwd skip first packet,
  init_win_bytes_bwd stores last packet
- Organize workspace dependencies and update all crates to latest
- Fix libxdp-sys 0.2.4 clang 20 build (enable use_cc_build + use_precompiled_bpf)
- Pin aya-ebpf =0.1.1 (0.1.2 yanked, aya-rs/aya#1400)
- Remove all comments and dead code
- Use macro-generated constructors for error types
- Replace eprintln/tracing::error with log! macro
- Clean up duplicate/unused error and log variants, fix log levels

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix: correct UDP/TCP/mid-stream forward/backward direction logic

* fix: symmetric hash redirect, per-queue optimization, and ICMP ACL support

eBPF: Add XOR symmetric hash to transmission stage so both directions of
a flow land on the same XSK queue, fixing the RSS asymmetry bug that
caused FlowTracker to only see one direction. Egress uses stack-local
ParsedPacket to avoid unnecessary map allocation. Allow non-TCP/UDP
packets through the pipeline so ACL can block ICMP.

Userspace: Revert shared tracker to per-queue trackers now that symmetric
hash guarantees bidirectional visibility. Replace Arc<Mutex<Vec<FrameDesc>>>
with private Vec per XskPair to eliminate hot-path lock contention. Add
pre-allocated BufferPool and parse-before-clone to reduce per-packet malloc.
Log partial sends when frames < packets.

Config: Add mtu, packet_buffer_size, buffer_pool_capacity to [Network]
with serde defaults for backward compatibility.

Cleanup: Remove unused Direction::flip(), FlowTracker::drain_flows(),
FlowStatistics broadcast/subscribe, MAX_BUFFERED_PACKETS, and
Engine::process_packet wrapper.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* feat: drop event ring buffer, double-buffer flow tracker, and review fixes

eBPF: Add 256KB RingBuf map for drop event reporting. Each XDP_DROP site
(ACL blacklist, rate limit, protocol filter) emits a DropEvent with
reason code. Refactor rate_limit::should_drop to return Option<u8> with
specific reason. Extract rate limit defaults to common/define/setting.

Userspace: Add DropMonitor with tokio async consumer, broadcast channel,
DropCounters, and /api/stats/drops REST + /ws/drops WebSocket endpoints.

FlowTracker: Replace O(flows) lock with O(1) take_snapshot() swap.
Inference tick now does phase-1 swap under lock, phase-2 filter outside
lock. Removes cleanup_old_flows, get_flows_for_inference,
drain_flows_for_logging.

Review fixes: explicit IPv6 match in symmetric_hash, consistent naming
(compute_symmetric_queue_id), reason_to_str helper, std::net::Ipv6Addr
formatting, WebSocketLagged typo, remove unused mtu config field.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix: move IP field writes before L4 match to prevent eBPF dead store elimination

The eBPF LLVM backend was optimizing away the non-TCP/UDP path by
treating ParsedPacket writes as dead stores (reads happen in separate
tail-called programs). Moving IP-level fields (timestamp, src/dst IP,
packet_length, ip_version, protocol) before the L4 protocol match
ensures they are written regardless of protocol, sharing code path
with TCP/UDP and preventing branch merging with the error path.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* feat: GeoIP LPM Trie country blocking and DNS query blacklist

eBPF: Add LPM Trie maps (GEO_BLOCK_V4/V6) in access_control for
country-level IP blocking with big-endian keys for correct prefix
matching. Add DNS query name parser in dns_filter with bounded loops,
lowercase normalization, and subdomain matching via parent domain
iteration. Both emit drop events with new reason codes.

Userspace: Add GeoBlock manager that loads CIDR prefixes from MaxMind
GeoLite2 database into LPM Tries per blocked country. Add DnsFilter
manager with wire-format domain conversion. New REST endpoints:
PUT/DELETE/GET /api/acl/geo/{block,unblock,blocked} and
PUT/DELETE/GET /api/filter/dns/blacklist.

Review fixes: DNS header bounds check off-by-one (+2 to +3),
total_prefixes accumulation (= to +=), proper InvalidDnsName error
type replacing InvalidMapType abuse.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix: review fixes for GeoIP and DNS features

GeoIP: Fix LPM Trie endianness (from_be_bytes → from_ne_bytes for
consistent memory layout). Move whitelist check before geo/blacklist
(whitelist should always take priority). Batch block/unblock API to
rebuild tries only once. Minimize rebuild gap by collecting entries
before locking. Use config path for GeoIP DB. Validate country codes
(2-letter alpha).

DNS: Fix bounds check off-by-one (dns_header+2 → +3). Add QDCOUNT>0
check. Replace InvalidMapType error with proper InvalidDnsName variant.
Add domain count limit per request (1000). Wrap API responses in JSON
objects for consistency.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* chore: add deployment and testing infrastructure

Add container definitions, compose config, and traffic generator
scripts for realistic inline deployment testing.

deploy/compose/ — Containerfiles for netguardia, router, endpoints
                  and podman-compose.yml with management network
deploy/scripts/ — setup.sh (veth/namespace wiring),
                  traffic-external.sh and traffic-internal.sh

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix: P0 bugs — IPv4 IHL parsing, TX frame leak, SSH whitelist logic

IPv4 IHL: L4 header offset was hardcoded to 34 (20-byte IPv4 header).
Now reads IHL field dynamically (20-60 bytes) so IP options don't
cause wrong port/flag parsing. Attackers could previously bypass
port-based rules by adding IP options.

TX frame leak: tx.produce() may submit fewer frames than provided.
Unsubmitted FrameDescs were lost, permanently shrinking frame_pool.
Now returns unsubmitted frames to pool.

SSH whitelist: Array<PlaceHolder>.get(0).is_some() always returns true
(zero-initialized entries exist). Changed to check actual value != 0,
matching userspace enable(1)/disable(0) semantics.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix: P1 bugs — rate_limit real values, ML status, DNS rate protocol check

rate_limit API: GET /api/rate-limit/config now reads actual values from
eBPF Array map instead of returning hardcoded defaults. Added getter
methods for each rate limit parameter.

ML status API: GET /api/ml/status now returns real engine state (mode,
tracker count, flow count, inference interval) instead of hardcoded
{"active": true}.

DNS rate limit: Added UDP protocol check before dst_port==53 test.
TCP connections to port 53 no longer incorrectly trigger DNS rate
limiter alongside packet rate limiter.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* perf: P2 fixes — binary IPs, pre-alloc buffers, build.rs dedup

parse_packet: Replace String IP addresses with [u8; 16] binary in
UserPacket, eliminating 2M heap allocations/sec at 1Mpps. FlowKey
copies bytes directly instead of string-parse-to-bytes round-trip.

xsk_manager: Pre-allocate comp_descs (256) and rx_descs (64) once
before the main loop instead of per-iteration vec![] allocation.

build.rs: Extract duplicate build_ingress_ebpf/build_egress_ebpf into
shared build_ebpf_package(). Add cargo:rerun-if-changed for common/src
to fix stale eBPF build cache when common crate changes.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* perf: P2 fixes — feature_extractor precompute, filter.rs dedup

feature_extractor: Pre-compute all statistics once via PrecomputedStats
struct instead of recomputing per feature name. ~70x speedup for the
72-feature extraction step. Public API unchanged.

filter.rs: Extract ok_or_error() helper to eliminate 16 instances of
duplicated match-result-to-HttpResponse pattern. File reduced from
338 to 243 lines with identical behavior.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* chore: P3 code quality — release profile, dep cleanup, dead code, safety

Release profile: Enable opt-level=3, lto="thin", strip=true.

Dependencies: Remove unused `futures` crate. Change tokio from "full"
to selective features (rt-multi-thread, macros, sync, time). Remove
commented-out csv/anyhow deps.

Dead code: Remove unused get_attack_label(), unnecessary
#[allow(dead_code)] annotations where code is actually used.

Safety: Add bounds check in PortRule::to_port_vec to prevent OOB if
count is corrupted. Fix set_config to propagate errors instead of
silently ignoring with `let _ =`.

Misc: Add .env, .DS_Store, profiling files to .gitignore.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Co-authored-by: ParrotXray <b05817691@gmail.com>
This commit is contained in:
DaLaw2 2026-03-21 15:41:36 +08:00 committed by GitHub
parent 18a2d4a168
commit ebc7edcead
81 changed files with 3012 additions and 2236 deletions
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* text=auto eol=lf

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@ -13,4 +13,16 @@ logs
TODO
.log
.txt
.csv
net-guardia/static/web
# Environment
.env
.env.local
# OS
.DS_Store
# Profiling
*.profraw
*.profdata

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@ -4,26 +4,70 @@ members = ["net-guardia", "common", "macros", "ingress-ebpf", "egress-ebpf"]
default-members = ["net-guardia", "common"]
[workspace.dependencies]
# eBPF - kernel side (pinned: aya-ebpf 0.1.2 was yanked, see aya-rs/aya#1400)
aya-ebpf = { version = "=0.1.1", default-features = false }
aya-log-ebpf = { version = "=0.1.0", default-features = false }
# eBPF - userspace side
aya = { version = "0.13.1", default-features = false }
aya-ebpf = { version = "0.1.1", default-features = false }
aya-log = { version = "0.2.1", default-features = false }
aya-log-ebpf = { version = "0.1.0", default-features = false }
cargo_metadata = { version = "0.23.1", default-features = false }
libc = { version = "0.2.159", default-features = false }
network-types = "0.1.0"
serde = { version = "1.0.215", features = ["derive"] }
# XDP
xsk-rs = { version = "0.8.0", default-features = false }
libxdp-sys = { version = "0.2.4", features = ["use_cc_build", "use_precompiled_bpf"] }
# Serialization
serde = { version = "1.0.228", features = ["derive"] }
serde_json = "1.0.149"
# Async runtime
tokio = { version = "1.50.0", features = ["rt-multi-thread", "macros", "sync", "time"] }
# Web framework
actix = "0.13.5"
actix-web = "4.13.0"
actix-cors = "0.7.1"
actix-ws = "0.4.0"
# Logging / tracing
tracing = "0.1.44"
tracing-appender = "0.2.4"
tracing-subscriber = { version = "0.3.23", features = ["env-filter"] }
# ML
tract-onnx = "0.22.1"
# Utilities
parking_lot = "0.12.5"
libc = { version = "0.2.183", default-features = false }
thiserror = "2.0.18"
futures-util = "0.3.32"
crossbeam = "0.8.4"
# System
sysinfo = "0.38.4"
maxminddb = "0.27.3"
ipnetwork = "0.21.1"
lru = "0.16.3"
# Build dependencies
cargo_metadata = { version = "0.23.1", default-features = false }
which = "8.0.2"
# Proc macro
proc-macro2 = "1.0.106"
quote = "1.0.45"
syn = { version = "2.0.117", features = ["full"] }
[profile.dev]
panic = "abort"
[profile.release]
panic = "abort"
#opt-level = 3
#lto = true
#strip = true
#debug = false
#overflow-checks = false
opt-level = 3
lto = "thin"
strip = true
[profile.release.package.ingress-ebpf]
debug = 2

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<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
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it under the terms of the GNU General Public License as published by
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This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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along with this program. If not, see <https://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.

8
common/src/define/drop_reason.rs Normal file
View File

@ -0,0 +1,8 @@
pub const DROP_REASON_ACL_BLACKLIST: u8 = 1;
pub const DROP_REASON_RATE_LIMIT_PKT: u8 = 2;
pub const DROP_REASON_RATE_LIMIT_SYN: u8 = 3;
pub const DROP_REASON_RATE_LIMIT_UDP: u8 = 4;
pub const DROP_REASON_RATE_LIMIT_DNS: u8 = 5;
pub const DROP_REASON_PROTOCOL_FILTER: u8 = 6;
pub const DROP_REASON_GEO_BLOCK: u8 = 7;
pub const DROP_REASON_DNS_BLACKLIST: u8 = 8;

3
common/src/define/mod.rs
View File

@ -1,5 +1,6 @@
pub mod drop_reason;
pub mod offset;
pub mod other;
pub mod pipeline;
pub mod rate_limit;
pub mod setting;
pub mod tcp_flags;

1
common/src/define/other.rs
View File

@ -1 +0,0 @@
pub const STANDARD_MTU: usize = 1500;

5
common/src/define/rate_limit.rs Normal file
View File

@ -0,0 +1,5 @@
pub const CFG_PACKET_RATE: u32 = 0;
pub const CFG_SYN_RATE: u32 = 1;
pub const CFG_UDP_RATE: u32 = 2;
pub const CFG_DNS_RATE: u32 = 3;
pub const CFG_WINDOW_NS: u32 = 4;

8
common/src/define/setting.rs
View File

@ -1,4 +1,10 @@
pub const MAX_STATS: usize = 131072;
pub const MAX_RULES: usize = 128;
pub const MAX_RULES_PORT: usize = 32;
pub const MAX_BUFFERED_PACKETS: usize = 1024;
pub const MAX_TRACKED_IPS: u32 = 65536;
pub const DEFAULT_WINDOW_NS: u64 = 1_000_000_000;
pub const DEFAULT_PACKET_RATE: u64 = 10000;
pub const DEFAULT_SYN_RATE: u64 = 100;
pub const DEFAULT_UDP_RATE: u64 = 5000;
pub const DEFAULT_DNS_RATE: u64 = 200;
pub const MAX_GEO_ENTRIES: u32 = 131072;

1
common/src/ebpf/mod.rs
View File

@ -1 +1,2 @@
pub mod parsing;
pub mod symmetric_hash;

34
common/src/ebpf/parsing.rs
View File

@ -31,22 +31,23 @@ unsafe fn parse_ipv4_packet(start: usize, end: usize, target: *mut ParsedPacket)
let ipv4 = &*((start + IPV4_HEADER_START) as *const Ipv4Hdr);
let packet_length = (end - start) as u32;
let (src_port, dst_port, tcp_flags, l4_header_len) = match ipv4.proto {
IpProto::Tcp => parse_tcp(start, end, IPV4_TCP_HEADER_START, IPV4_TCP_HEADER_END)?,
IpProto::Udp => parse_udp(start, end, IPV4_UDP_HEADER_START, IPV4_UDP_HEADER_END)?,
_ => return Err(()),
};
let t = &mut *target;
t.timestamp_ns = bpf_ktime_get_ns();
core::ptr::copy_nonoverlapping(ipv4.src_addr.as_ptr(), t.src_ip.as_mut_ptr(), 4);
core::ptr::copy_nonoverlapping(ipv4.dst_addr.as_ptr(), t.dst_ip.as_mut_ptr(), 4);
t.packet_length = packet_length;
t.ip_version = 4;
t.protocol = ipv4.proto;
let (src_port, dst_port, tcp_flags, l4_header_len) = match ipv4.proto {
IpProto::Tcp => parse_tcp(start, end, IPV4_TCP_HEADER_START, IPV4_TCP_HEADER_END)?,
IpProto::Udp => parse_udp(start, end, IPV4_UDP_HEADER_START, IPV4_UDP_HEADER_END)?,
_ => (0, 0, 0, 0),
};
t.payload_length = packet_length.saturating_sub((IPV4_HEADER_END + l4_header_len) as u32);
t.src_port = src_port;
t.dst_port = dst_port;
t.ip_version = 4;
t.protocol = ipv4.proto;
t.tcp_flags = tcp_flags;
Ok(())
@ -61,22 +62,23 @@ unsafe fn parse_ipv6_packet(start: usize, end: usize, target: *mut ParsedPacket)
let ipv6 = &*((start + IPV6_HEADER_START) as *const Ipv6Hdr);
let packet_length = (end - start) as u32;
let (src_port, dst_port, tcp_flags, l4_header_len) = match ipv6.next_hdr {
IpProto::Tcp => parse_tcp(start, end, IPV6_TCP_HEADER_START, IPV6_TCP_HEADER_END)?,
IpProto::Udp => parse_udp(start, end, IPV6_UDP_HEADER_START, IPV6_UDP_HEADER_END)?,
_ => return Err(()),
};
let t = &mut *target;
t.timestamp_ns = bpf_ktime_get_ns();
core::ptr::copy_nonoverlapping(ipv6.src_addr.as_ptr(), t.src_ip.as_mut_ptr(), 16);
core::ptr::copy_nonoverlapping(ipv6.dst_addr.as_ptr(), t.dst_ip.as_mut_ptr(), 16);
t.packet_length = packet_length;
t.ip_version = 6;
t.protocol = ipv6.next_hdr;
let (src_port, dst_port, tcp_flags, l4_header_len) = match ipv6.next_hdr {
IpProto::Tcp => parse_tcp(start, end, IPV6_TCP_HEADER_START, IPV6_TCP_HEADER_END)?,
IpProto::Udp => parse_udp(start, end, IPV6_UDP_HEADER_START, IPV6_UDP_HEADER_END)?,
_ => (0, 0, 0, 0),
};
t.payload_length = packet_length.saturating_sub((IPV6_HEADER_END + l4_header_len) as u32);
t.src_port = src_port;
t.dst_port = dst_port;
t.ip_version = 6;
t.protocol = ipv6.next_hdr;
t.tcp_flags = tcp_flags;
Ok(())

24
common/src/ebpf/symmetric_hash.rs Normal file
View File

@ -0,0 +1,24 @@
use crate::model::parsed_packet::ParsedPacket;
#[inline(always)]
pub fn symmetric_queue_id(pkt: &ParsedPacket, num_queues: u32) -> Option<u32> {
if num_queues == 0 {
return None;
}
let ip_hash = match pkt.ip_version {
4 => pkt.src_ip_v4() ^ pkt.dst_ip_v4(),
6 => {
let s = pkt.src_ip_v6();
let d = pkt.dst_ip_v6();
let xor = s ^ d;
(xor as u32) ^ ((xor >> 32) as u32) ^ ((xor >> 64) as u32) ^ ((xor >> 96) as u32)
}
_ => return None,
};
let port_hash = (pkt.src_port as u32) ^ (pkt.dst_port as u32);
let h = (ip_hash ^ port_hash.rotate_left(16) ^ (pkt.protocol as u8 as u32)).wrapping_mul(2654435761);
Some(h % num_queues)
}

19
common/src/model/dns_name.rs Normal file
View File

@ -0,0 +1,19 @@
#[cfg(feature = "user")]
use aya::Pod;
/// Fixed-size DNS name in wire format (length-prefixed labels).
/// Stored lowercase, zero-padded. Example: \x07example\x03com\x00
#[repr(C)]
#[derive(Clone, Copy, PartialEq, Eq, Hash)]
pub struct DnsName {
pub data: [u8; 128],
}
impl DnsName {
pub const fn zeroed() -> Self {
Self { data: [0u8; 128] }
}
}
#[cfg(feature = "user")]
unsafe impl Pod for DnsName {}

13
common/src/model/drop_event.rs Normal file
View File

@ -0,0 +1,13 @@
#[repr(C, align(8))]
#[derive(Clone, Copy)]
pub struct DropEvent {
pub timestamp_ns: u64,
pub src_ip: [u8; 16],
pub dst_ip: [u8; 16],
pub src_port: u16,
pub dst_port: u16,
pub protocol: u8,
pub reason: u8,
pub ip_version: u8,
pub _pad: u8,
}

2
common/src/model/mod.rs
View File

@ -1,3 +1,5 @@
pub mod dns_name;
pub mod drop_event;
pub mod flow_stats;
pub mod http_method;
pub mod ip_address;

8
common/src/model/port_rule.rs
View File

@ -65,11 +65,11 @@ impl PortRule {
return false;
}
if self.ports[i] == port {
return true; // already exists
return true;
}
}
if (self.count as usize) >= MAX_RULES_PORT {
return false; // full
return false;
}
self.ports[self.count as usize] = port;
self.count += 1;
@ -83,7 +83,6 @@ impl PortRule {
break;
}
if self.ports[i] == port {
// shift remaining
for j in i..(self.count as usize - 1) {
self.ports[j] = self.ports[j + 1];
}
@ -97,7 +96,8 @@ impl PortRule {
#[cfg(feature = "user")]
pub fn to_port_vec(&self) -> Vec<Port> {
self.ports[..self.count as usize].to_vec()
let count = (self.count as usize).min(MAX_RULES_PORT);
self.ports[..count].to_vec()
}
#[cfg(feature = "user")]

7
common/src/model/rate_limit.rs
View File

@ -1,13 +1,6 @@
#[cfg(feature = "user")]
use aya::Pod;
pub const MAX_TRACKED_IPS: u32 = 65536;
pub const DEFAULT_WINDOW_NS: u64 = 1_000_000_000;
pub const DEFAULT_PACKET_RATE: u64 = 10000;
pub const DEFAULT_SYN_RATE: u64 = 100;
pub const DEFAULT_UDP_RATE: u64 = 5000;
pub const DEFAULT_DNS_RATE: u64 = 200;
#[repr(C)]
#[derive(Clone, Copy)]
pub struct RateState {

2
config.toml
View File

@ -27,7 +27,7 @@ traffic_logging_mode = true
traffic_log_csv_path = "traffic_log.csv"
[Misc]
geoip_db_name = "GeoLite2-City.mmdb"
geoip_db_name = "net-guardia/static/geo/GeoLite2-City.mmdb"
[Pipeline]
ingress = ["access_control", "rate_limit", "service"]

25
deploy/compose/Containerfile.endpoint Normal file
View File

@ -0,0 +1,25 @@
FROM rockylinux:10
RUN dnf install -y epel-release && \
dnf install -y --allowerasing \
nmap \
tcpdump \
net-tools \
iputils \
iproute \
ncat \
curl wget \
httpd \
openssh-server \
python3 python3-pip \
&& dnf clean all
RUN pip3 install scapy requests
RUN echo "NetGuardia Endpoint" > /var/www/html/index.html && \
ssh-keygen -A
COPY scripts/*.sh /opt/scripts/
RUN chmod +x /opt/scripts/*.sh
CMD ["sleep", "infinity"]

46
deploy/compose/Containerfile.netguardia Normal file
View File

@ -0,0 +1,46 @@
FROM rockylinux:10
RUN dnf install -y epel-release && \
crb enable && \
dnf install -y --allowerasing \
clang llvm \
bpftool \
iproute iproute-tc \
elfutils-libelf-devel \
zlib-devel \
libbpf-devel \
kernel-headers \
tcpdump \
net-tools \
iputils \
curl wget \
git \
gh \
vim \
openssh-server \
ethtool \
nodejs24 \
nodejs24-npm \
m4 \
make pkg-config \
&& dnf clean all
# Rust toolchain
RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y \
&& /root/.cargo/bin/rustup toolchain install nightly \
&& /root/.cargo/bin/rustup component add rust-src --toolchain nightly
ENV PATH="/root/.cargo/bin:${PATH}"
# bpf-linker for aya eBPF compilation
RUN cargo install bpf-linker
RUN ln -s /usr/bin/node-24 /usr/local/bin/node && \
ln -s /usr/bin/npm-24 /usr/local/bin/npm && \
ln -s /usr/bin/npx-24 /usr/local/bin/npx
RUN echo 'root:REDACTED' | chpasswd && \
sed -i 's/^#PermitRootLogin.*/PermitRootLogin yes/' /etc/ssh/sshd_config && \
sed -i 's/^#PasswordAuthentication.*/PasswordAuthentication yes/' /etc/ssh/sshd_config
WORKDIR /root/NetGuardia
CMD sh -c "ssh-keygen -A && /usr/sbin/sshd && sleep infinity"

10
deploy/compose/Containerfile.router Normal file
View File

@ -0,0 +1,10 @@
FROM rockylinux:10
RUN dnf install -y --allowerasing \
iproute \
iputils \
net-tools \
tcpdump \
&& dnf clean all
CMD ["sleep", "infinity"]

72
deploy/compose/podman-compose.yml Normal file
View File

@ -0,0 +1,72 @@
version: "3"
services:
netguardia:
build:
context: ..
dockerfile: compose/Containerfile.netguardia
container_name: netguardia
hostname: netguardia
privileged: true
security_opt:
- seccomp=unconfined
ulimits:
memlock:
soft: -1
hard: -1
dns:
- 10.10.3.1
- 8.8.8.8
networks:
mgmt-net:
ipv4_address: 10.10.3.10
ports:
- "2222:22"
- "8080:8080"
volumes:
- /home/dalaw2/NetGuardia:/root/NetGuardia:z
- /sys/fs/bpf:/sys/fs/bpf:rw
- /sys/kernel/debug:/sys/kernel/debug:ro
router:
build:
context: ..
dockerfile: compose/Containerfile.router
container_name: router
hostname: router
cap_add:
- NET_ADMIN
- NET_RAW
network_mode: none
external:
build:
context: ..
dockerfile: compose/Containerfile.endpoint
container_name: external
hostname: external
cap_add:
- NET_RAW
- NET_ADMIN
network_mode: none
command: ["/opt/scripts/traffic-external.sh"]
internal:
build:
context: ..
dockerfile: compose/Containerfile.endpoint
container_name: internal
hostname: internal
cap_add:
- NET_RAW
- NET_ADMIN
network_mode: none
command: ["/opt/scripts/traffic-internal.sh"]
networks:
mgmt-net:
driver: bridge
ipam:
config:
- subnet: 10.10.3.0/24
gateway: 10.10.3.1

174
deploy/scripts/setup.sh Normal file
View File

@ -0,0 +1,174 @@
#!/bin/bash
set -e
if command -v podman-compose &>/dev/null; then
COMPOSE="podman-compose"
RT="podman"
elif command -v docker &>/dev/null && docker compose version &>/dev/null 2>&1; then
COMPOSE="docker compose"
RT="docker"
else
echo "ERROR: No container runtime found"
exit 1
fi
echo "=== Runtime: $RT ==="
echo "=== Kernel: $(uname -r) ==="
echo ""
echo "=== Building containers ==="
$COMPOSE build
echo "=== Starting containers ==="
$COMPOSE up -d
echo ""
echo "=== Containers running ==="
$RT ps --format "table {{.Names}}\t{{.Status}}" 2>/dev/null || $RT ps
get_pid() {
$RT inspect --format '{{.State.Pid}}' "$1"
}
mkdir -p /var/run/netns
EXT_PID=$(get_pid external)
INT_PID=$(get_pid internal)
RTR_PID=$(get_pid router)
NG_PID=$(get_pid netguardia)
ln -sf /proc/$EXT_PID/ns/net /var/run/netns/external
ln -sf /proc/$INT_PID/ns/net /var/run/netns/internal
ln -sf /proc/$RTR_PID/ns/net /var/run/netns/router
ln -sf /proc/$NG_PID/ns/net /var/run/netns/netguardia
# ============================================================
# Segment 1: external <-> router (10.10.1.0/24)
# Direct connection, no inspection needed
# ============================================================
echo ""
echo "=== Segment 1: external <-> router (10.10.1.0/24) ==="
ip link add ext-eth0 type veth peer name rtr-ext
ip link set ext-eth0 netns external
ip link set rtr-ext netns router
ip netns exec external ip link set lo up
ip netns exec external ip link set ext-eth0 up
ip netns exec external ip addr add 10.10.1.2/24 dev ext-eth0
for i in 3 4 5 6 7; do
ip netns exec external ip addr add 10.10.1.${i}/24 dev ext-eth0
done
ip netns exec external ip route add default via 10.10.1.1
ip netns exec router ip link set lo up
ip netns exec router ip link set rtr-ext up
ip netns exec router ip addr add 10.10.1.1/24 dev rtr-ext
echo " external: ext-eth0 10.10.1.{2-7}/24, gw 10.10.1.1"
echo " router: rtr-ext 10.10.1.1/24"
# ============================================================
# Segment 2: router <-> netguardia <-> internal (10.10.2.0/24)
# NetGuardia inline: XDP on ng-ext (router side) and ng-int (internal side)
# No bridges, no inline veth pair — direct XSK forwarding
# ============================================================
echo ""
echo "=== Segment 2: router <-> [NetGuardia] <-> internal (10.10.2.0/24) ==="
# router <-> netguardia: ng-ext is the netguardia side
ip link add rtr-int type veth peer name ng-ext
ip link set rtr-int netns router
ip link set ng-ext netns netguardia
# netguardia <-> internal: ng-int is the netguardia side
ip link add int-eth0 type veth peer name ng-int
ip link set int-eth0 netns internal
ip link set ng-int netns netguardia
# Router internal side
ip netns exec router ip link set rtr-int up
ip netns exec router ip addr add 10.10.2.1/24 dev rtr-int
ip netns exec router sh -c 'echo 1 > /proc/sys/net/ipv4/ip_forward'
# Internal container
ip netns exec internal ip link set lo up
ip netns exec internal ip link set int-eth0 up
ip netns exec internal ip addr add 10.10.2.2/24 dev int-eth0
for i in 3 4 5 6; do
ip netns exec internal ip addr add 10.10.2.${i}/24 dev int-eth0
done
ip netns exec internal ip route add default via 10.10.2.1
# NetGuardia interfaces (no IP, transparent)
ip netns exec netguardia ip link set ng-ext up
ip netns exec netguardia ip link set ng-int up
# Disable checksum offload on ALL veth endpoints.
# AF_XDP TX bypasses the kernel stack, so checksums are not computed.
# Without this, TCP packets forwarded through XSK have bad checksums and get dropped.
ip netns exec router ethtool -K rtr-int tx off rx off 2>/dev/null || true
ip netns exec router ethtool -K rtr-ext tx off rx off 2>/dev/null || true
ip netns exec internal ethtool -K int-eth0 tx off rx off 2>/dev/null || true
ip netns exec external ethtool -K ext-eth0 tx off rx off 2>/dev/null || true
ip netns exec netguardia ethtool -K ng-ext tx off rx off 2>/dev/null || true
ip netns exec netguardia ethtool -K ng-int tx off rx off 2>/dev/null || true
echo " router: rtr-int (10.10.2.1) <-> ng-ext (XDP ingress)"
echo " netguardia: ng-ext <-> [XSK forwarding] <-> ng-int"
echo " internal: int-eth0 (10.10.2.{2-6}) <-> ng-int (XDP egress)"
echo " checksum offload disabled on all veth endpoints"
# ============================================================
# Verify
# ============================================================
echo ""
echo "=== Interfaces inside netguardia ==="
ip netns exec netguardia ip -br link show
echo ""
echo "=== Testing connectivity ==="
echo -n " external -> router: "
ip netns exec external ping -c 1 -W 2 10.10.1.1 >/dev/null 2>&1 && echo "OK" || echo "FAIL"
# Without net-guardia, traffic between router and internal won't pass
# because ng-ext/ng-int are just veth endpoints with no forwarding
echo -n " router -> internal: "
ip netns exec router ping -c 1 -W 2 10.10.2.2 >/dev/null 2>&1 && echo "OK" || echo "FAIL (expected - needs net-guardia)"
cat > /tmp/netguardia_interfaces.txt << IEOF
# NetGuardia interface mapping - realistic inline deployment
# Router handles L3 (10.10.1.0/24 <-> 10.10.2.0/24)
# NetGuardia inline on 10.10.2.0/24 (no IP, no bridge)
# ng-ext - XDP ingress (router side, attached to rtr-int peer)
# ng-int - XDP egress (internal side, attached to int-eth0 peer)
# XSK forwards packets: ng-ext RX -> ng-int TX and ng-int RX -> ng-ext TX
# Management: eth0 (10.10.3.10)
IEOF
$RT cp /tmp/netguardia_interfaces.txt netguardia:/root/NetGuardia/interfaces.txt 2>/dev/null || true
rm -f /var/run/netns/external /var/run/netns/internal /var/run/netns/router /var/run/netns/netguardia
echo ""
echo "=========================================="
echo " NetGuardia realistic inline deployment!"
echo ""
echo " external (10.10.1.{2-7})"
echo " |"
echo " [router] 10.10.1.1 <-> 10.10.2.1"
echo " | rtr-int"
echo " |"
echo " ng-ext (no IP) <- XDP ingress"
echo " |"
echo " [net-guardia XSK]"
echo " |"
echo " ng-int (no IP) <- XDP egress"
echo " |"
echo " | int-eth0"
echo " internal (10.10.2.{2-6})"
echo ""
echo " All 10.10.2.0/24 traffic requires net-guardia!"
echo " Mgmt: 10.10.3.10"
echo " SSH: ssh -p 2222 root@<host-ip>"
echo " Web: http://<host-ip>:8080"
echo "=========================================="

127
deploy/scripts/traffic-external.sh Normal file
View File

@ -0,0 +1,127 @@
#!/bin/bash
# External network traffic generator
# Simulates external hosts sending traffic toward the internal network
INTERNAL_IP="10.10.2.2"
SELF_BASE="10.10.1"
echo "[external] Traffic generator started"
# Wait for network and routing to be ready
sleep 5
until ping -c 1 -W 1 $INTERNAL_IP &>/dev/null; do
echo "[external] Waiting for internal connectivity..."
sleep 2
done
echo "[external] Internal network reachable"
# --- Benign traffic functions ---
http_traffic() {
while true; do
for src in 2 3 4; do
local ip="${SELF_BASE}.${src}"
# Various HTTP methods
curl -s --interface $ip -o /dev/null -m 3 http://${INTERNAL_IP}/ 2>/dev/null
curl -s --interface $ip -o /dev/null -m 3 -X POST -d "data=test" http://${INTERNAL_IP}/ 2>/dev/null
curl -s --interface $ip -o /dev/null -m 3 -X HEAD http://${INTERNAL_IP}/ 2>/dev/null
curl -s --interface $ip -o /dev/null -m 3 -X OPTIONS http://${INTERNAL_IP}/ 2>/dev/null
done
sleep $((RANDOM % 3 + 1))
done
}
ssh_traffic() {
while true; do
for src in 2 5; do
local ip="${SELF_BASE}.${src}"
# SSH connection attempts (will fail but generates TCP SYN to port 22)
timeout 2 bash -c "echo | nc -w 1 -s $ip $INTERNAL_IP 22" 2>/dev/null || true
done
sleep $((RANDOM % 5 + 3))
done
}
dns_traffic() {
while true; do
for src in 2 3 6; do
local ip="${SELF_BASE}.${src}"
# UDP packets to port 53 (DNS-like)
echo -ne '\x00\x01\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00\x07example\x03com\x00\x00\x01\x00\x01' | \
nc -u -w 1 -s $ip $INTERNAL_IP 53 2>/dev/null || true
done
sleep $((RANDOM % 4 + 2))
done
}
udp_traffic() {
while true; do
for src in 2 4 7; do
local ip="${SELF_BASE}.${src}"
for port in 5000 5001 8000 9090; do
echo "udp-payload-$(date +%s)" | nc -u -w 1 -s $ip $INTERNAL_IP $port 2>/dev/null || true
done
done
sleep $((RANDOM % 3 + 2))
done
}
tcp_traffic() {
while true; do
for src in 3 5 6; do
local ip="${SELF_BASE}.${src}"
for port in 3000 4000 6379 5432; do
timeout 2 bash -c "echo 'hello' | nc -w 1 -s $ip $INTERNAL_IP $port" 2>/dev/null || true
done
done
sleep $((RANDOM % 4 + 2))
done
}
icmp_traffic() {
while true; do
for src in 2 3 4 5; do
local ip="${SELF_BASE}.${src}"
ping -c 2 -W 1 -I $ip $INTERNAL_IP >/dev/null 2>&1 || true
done
sleep $((RANDOM % 5 + 3))
done
}
# --- Attack-like traffic (low intensity, for ML training) ---
syn_scan() {
while true; do
sleep $((RANDOM % 30 + 30))
src="${SELF_BASE}.$((RANDOM % 3 + 5))"
echo "[external] SYN scan burst from $src"
# Quick port scan pattern
for port in 22 80 443 8080 3306 5432 6379 8443 9090 27017; do
timeout 1 bash -c "echo | nc -w 1 -s $src $INTERNAL_IP $port" 2>/dev/null || true
done
done
}
udp_burst() {
while true; do
sleep $((RANDOM % 60 + 45))
src="${SELF_BASE}.$((RANDOM % 3 + 5))"
echo "[external] UDP burst from $src"
for i in $(seq 1 50); do
echo "flood-$i" | nc -u -w 0 -s $src $INTERNAL_IP $((RANDOM % 10000 + 1024)) 2>/dev/null || true
done
done
}
# Launch all traffic generators in background
http_traffic &
ssh_traffic &
dns_traffic &
udp_traffic &
tcp_traffic &
icmp_traffic &
syn_scan &
udp_burst &
echo "[external] All traffic generators running"
wait

90
deploy/scripts/traffic-internal.sh Normal file
View File

@ -0,0 +1,90 @@
#!/bin/bash
# Internal network traffic generator
# Simulates internal hosts sending traffic toward the external network
# Also runs services (HTTP, SSH) for external to connect to
EXTERNAL_IP="10.10.1.2"
SELF_BASE="10.10.2"
echo "[internal] Traffic generator started"
# Start HTTP server on all interfaces
httpd -D FOREGROUND &
HTTPD_PID=$!
# Start a simple SSH listener (for connection pattern generation)
ssh-keygen -A 2>/dev/null
/usr/sbin/sshd 2>/dev/null || true
# Wait for network to be ready
sleep 3
until ping -c 1 -W 1 $EXTERNAL_IP &>/dev/null; do
echo "[internal] Waiting for external connectivity..."
sleep 2
done
echo "[internal] External network reachable"
# --- Benign outbound traffic ---
http_outbound() {
while true; do
for src in 2 3 4; do
local ip="${SELF_BASE}.${src}"
curl -s --interface $ip -o /dev/null -m 3 http://${EXTERNAL_IP}/ 2>/dev/null
curl -s --interface $ip -o /dev/null -m 3 -X POST -d "query=test" http://${EXTERNAL_IP}/ 2>/dev/null
done
sleep $((RANDOM % 4 + 2))
done
}
dns_outbound() {
while true; do
for src in 2 5; do
local ip="${SELF_BASE}.${src}"
echo -ne '\x00\x02\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00\x06google\x03com\x00\x00\x01\x00\x01' | \
nc -u -w 1 -s $ip $EXTERNAL_IP 53 2>/dev/null || true
done
sleep $((RANDOM % 5 + 3))
done
}
udp_outbound() {
while true; do
for src in 3 4 6; do
local ip="${SELF_BASE}.${src}"
echo "internal-udp-$(date +%s)" | nc -u -w 1 -s $ip $EXTERNAL_IP $((RANDOM % 5000 + 5000)) 2>/dev/null || true
done
sleep $((RANDOM % 4 + 2))
done
}
tcp_outbound() {
while true; do
for src in 2 5 6; do
local ip="${SELF_BASE}.${src}"
timeout 2 bash -c "echo 'ping' | nc -w 1 -s $ip $EXTERNAL_IP $((RANDOM % 1000 + 3000))" 2>/dev/null || true
done
sleep $((RANDOM % 5 + 3))
done
}
icmp_outbound() {
while true; do
for src in 2 3; do
local ip="${SELF_BASE}.${src}"
ping -c 1 -W 1 -I $ip $EXTERNAL_IP >/dev/null 2>&1 || true
done
sleep $((RANDOM % 6 + 4))
done
}
# Launch all traffic generators
http_outbound &
dns_outbound &
udp_outbound &
tcp_outbound &
icmp_outbound &
echo "[internal] All traffic generators + services running"
echo "[internal] Services: HTTP(:80), SSH(:22)"
wait

4
egress-ebpf/Cargo.toml
View File

@ -5,12 +5,12 @@ edition = "2024"
[dependencies]
common = { path = "../common", features = ["kernel"] }
aya-ebpf = { workspace = true }
aya-log-ebpf = { workspace = true }
network-types = { workspace = true }
[build-dependencies]
which = "8.0.0"
which = { workspace = true }
[[bin]]
name = "net-guardia-egress"

20
egress-ebpf/src/main.rs
View File

@ -3,23 +3,39 @@
use aya_ebpf::bindings::xdp_action;
use aya_ebpf::macros::{map, xdp};
use aya_ebpf::maps::XskMap;
use aya_ebpf::maps::{Array, XskMap};
use aya_ebpf::programs::XdpContext;
#[allow(unused_imports)]
use aya_log_ebpf::info;
use common::ebpf::parsing;
use common::ebpf::symmetric_hash::symmetric_queue_id;
use common::model::parsed_packet::ParsedPacket;
#[map]
static NUM_QUEUES: Array<u32> = Array::with_max_entries(1, 0);
#[map]
static EGRESS_XSKS_MAP: XskMap = XskMap::pinned(64, 0);
#[xdp]
pub fn net_guardia(ctx: XdpContext) -> u32 {
let queue_id = unsafe { (*ctx.ctx).rx_queue_index };
let queue_id = unsafe {
compute_symmetric_queue_id(&ctx).unwrap_or((*ctx.ctx).rx_queue_index)
};
match EGRESS_XSKS_MAP.redirect(queue_id, 0) {
Ok(action) => action,
Err(_) => xdp_action::XDP_PASS,
}
}
#[inline(always)]
unsafe fn compute_symmetric_queue_id(ctx: &XdpContext) -> Option<u32> {
let mut pkt = core::mem::zeroed::<ParsedPacket>();
parsing::parse_packet(ctx.data(), ctx.data_end(), &mut pkt).ok()?;
let num_q = *NUM_QUEUES.get(0)?;
symmetric_queue_id(&pkt, num_q)
}
#[cfg(not(test))]
#[panic_handler]
fn panic(_info: &core::panic::PanicInfo) -> ! {

5
ingress-ebpf/Cargo.toml
View File

@ -5,17 +5,16 @@ edition = "2024"
[dependencies]
common = { path = "../common", features = ["kernel"] }
aya-ebpf = { workspace = true }
aya-log-ebpf = { workspace = true }
network-types = { workspace = true }
[build-dependencies]
which = "8.0.0"
which = { workspace = true }
[[bin]]
name = "net-guardia-ingress"
path = "src/main.rs"
test = false
doctest = false
bench = false
bench = false

22
ingress-ebpf/src/action/access_control.rs
View File

@ -1,6 +1,8 @@
use aya_ebpf::macros::map;
use aya_ebpf::maps::HashMap;
use common::define::setting::MAX_RULES;
use aya_ebpf::maps::LpmTrie;
use aya_ebpf::maps::lpm_trie::Key;
use common::define::setting::{MAX_RULES, MAX_GEO_ENTRIES};
use common::model::parsed_packet::ParsedPacket;
use common::model::ip_address::{IPv4, IPv6};
use common::model::port_rule::PortRule;
@ -21,6 +23,24 @@ static IPV6_SRC_BLACKLIST: HashMap<IPv6, PortRule> = HashMap::with_max_entries(M
static IPV4_DST_BLACKLIST: HashMap<IPv4, PortRule> = HashMap::with_max_entries(MAX_RULES as u32, 0);
#[map]
static IPV6_DST_BLACKLIST: HashMap<IPv6, PortRule> = HashMap::with_max_entries(MAX_RULES as u32, 0);
#[map]
static GEO_BLOCK_V4: LpmTrie<u32, u8> = LpmTrie::with_max_entries(MAX_GEO_ENTRIES, 0);
#[map]
static GEO_BLOCK_V6: LpmTrie<u128, u8> = LpmTrie::with_max_entries(MAX_GEO_ENTRIES, 0);
pub fn ipv4_is_geo_blocked(pkt: &ParsedPacket) -> bool {
// from_ne_bytes so memory layout = raw packet bytes (network order).
// Matches userspace insertion which uses to_bits().to_be() (same memory layout).
let src_ip = u32::from_ne_bytes([pkt.src_ip[0], pkt.src_ip[1], pkt.src_ip[2], pkt.src_ip[3]]);
let key = Key::new(32, src_ip);
unsafe { GEO_BLOCK_V4.get(&key).is_some() }
}
pub fn ipv6_is_geo_blocked(pkt: &ParsedPacket) -> bool {
let src_ip = u128::from_ne_bytes(pkt.src_ip);
let key = Key::new(128, src_ip);
unsafe { GEO_BLOCK_V6.get(&key).is_some() }
}
pub fn ipv4_is_whitelisted(pkt: &ParsedPacket) -> bool {
let src_ip = pkt.src_ip_v4();

5
ingress-ebpf/src/action/protocol_filter.rs
View File

@ -60,7 +60,6 @@ fn http_service_violation<K>(
if pkt.tcp_flags & (TCP_PSH | TCP_ACK) != (TCP_PSH | TCP_ACK) {
return false;
}
// Bounds check before reading IHL — verifier needs to see this
if start + 15 > end {
return false;
}
@ -110,7 +109,7 @@ fn get_http_request_method(start: usize, end: usize, offset: usize) -> Option<Ht
fn ipv4_ssh_service_violation(source: &AddrPortV4, destination: &AddrPortV4) -> bool {
unsafe {
if IPV4_SSH_SERVICE.get(destination).is_some() {
if SSH_WHITE_LIST_ENABLE.get(0).is_some() {
if matches!(SSH_WHITE_LIST_ENABLE.get(0), Some(&v) if v != 0) {
IPV4_SSH_WHITE_LIST.get(&source.ip()).is_none()
} else {
IPV4_SSH_BLACK_LIST.get(&source.ip()).is_some()
@ -125,7 +124,7 @@ fn ipv4_ssh_service_violation(source: &AddrPortV4, destination: &AddrPortV4) ->
fn ipv6_ssh_service_violation(source: &AddrPortV6, destination: &AddrPortV6) -> bool {
unsafe {
if IPV6_SSH_SERVICE.get(destination).is_some() {
if SSH_WHITE_LIST_ENABLE.get(0).is_some() {
if matches!(SSH_WHITE_LIST_ENABLE.get(0), Some(&v) if v != 0) {
IPV6_SSH_WHITE_LIST.get(&source.ip()).is_none()
} else {
IPV6_SSH_BLACK_LIST.get(&source.ip()).is_some()

46
ingress-ebpf/src/action/rate_limit.rs
View File

@ -1,21 +1,17 @@
use aya_ebpf::helpers::bpf_ktime_get_ns;
use aya_ebpf::macros::map;
use aya_ebpf::maps::{Array, LruHashMap};
use common::define::drop_reason::*;
use common::define::rate_limit::*;
use common::define::setting::*;
use common::define::tcp_flags::*;
use common::model::ip_address::{IPv4, IPv6};
use common::model::parsed_packet::ParsedPacket;
use common::model::rate_limit::*;
use common::model::rate_limit::RateState;
use network_types::ip::IpProto;
const CFG_PACKET_RATE: u32 = 0;
const CFG_SYN_RATE: u32 = 1;
const CFG_UDP_RATE: u32 = 2;
const CFG_DNS_RATE: u32 = 3;
const CFG_WINDOW_NS: u32 = 4;
#[map]
static RATE_LIMIT_CONFIG: Array<u64> = Array::with_max_entries(5, 0);
#[map]
static IPV4_PACKET_RATE_MAP: LruHashMap<IPv4, RateState> = LruHashMap::with_max_entries(MAX_TRACKED_IPS, 0);
#[map]
@ -33,11 +29,11 @@ static IPV4_DNS_RATE_MAP: LruHashMap<IPv4, RateState> = LruHashMap::with_max_ent
#[map]
static IPV6_DNS_RATE_MAP: LruHashMap<IPv6, RateState> = LruHashMap::with_max_entries(MAX_TRACKED_IPS, 0);
pub fn should_drop(pkt: &ParsedPacket) -> bool {
pub fn should_drop(pkt: &ParsedPacket) -> Option<u8> {
match pkt.ip_version {
4 => ipv4_should_drop(pkt),
6 => ipv6_should_drop(pkt),
_ => false,
_ => None,
}
}
@ -52,8 +48,6 @@ fn get_config(index: u32, default: u64) -> u64 {
}
}
/// Returns true if the packet is a TCP SYN-only (no ACK) packet.
/// For non-TCP packets (e.g. UDP), tcp_flags is 0, so this safely returns false.
#[inline(always)]
fn is_syn_only(pkt: &ParsedPacket) -> bool {
matches!(pkt.protocol, IpProto::Tcp)
@ -92,63 +86,63 @@ fn check_rate<K>(
}
#[inline(always)]
fn ipv4_should_drop(pkt: &ParsedPacket) -> bool {
fn ipv4_should_drop(pkt: &ParsedPacket) -> Option<u8> {
let now = unsafe { bpf_ktime_get_ns() };
let window = get_config(CFG_WINDOW_NS, DEFAULT_WINDOW_NS);
let src_ip = pkt.src_ip_v4();
if check_rate(&IPV4_PACKET_RATE_MAP, &src_ip, now, window, get_config(CFG_PACKET_RATE, DEFAULT_PACKET_RATE)) {
return true;
return Some(DROP_REASON_RATE_LIMIT_PKT);
}
if is_syn_only(pkt) {
if check_rate(&IPV4_SYN_RATE_MAP, &src_ip, now, window, get_config(CFG_SYN_RATE, DEFAULT_SYN_RATE)) {
return true;
return Some(DROP_REASON_RATE_LIMIT_SYN);
}
}
if matches!(pkt.protocol, IpProto::Udp) {
if check_rate(&IPV4_UDP_RATE_MAP, &src_ip, now, window, get_config(CFG_UDP_RATE, DEFAULT_UDP_RATE)) {
return true;
return Some(DROP_REASON_RATE_LIMIT_UDP);
}
}
if pkt.dst_port == 53 {
if matches!(pkt.protocol, IpProto::Udp) && pkt.dst_port == 53 {
if check_rate(&IPV4_DNS_RATE_MAP, &src_ip, now, window, get_config(CFG_DNS_RATE, DEFAULT_DNS_RATE)) {
return true;
return Some(DROP_REASON_RATE_LIMIT_DNS);
}
}
false
None
}
#[inline(always)]
fn ipv6_should_drop(pkt: &ParsedPacket) -> bool {
fn ipv6_should_drop(pkt: &ParsedPacket) -> Option<u8> {
let now = unsafe { bpf_ktime_get_ns() };
let window = get_config(CFG_WINDOW_NS, DEFAULT_WINDOW_NS);
let src_ip = pkt.src_ip_v6();
if check_rate(&IPV6_PACKET_RATE_MAP, &src_ip, now, window, get_config(CFG_PACKET_RATE, DEFAULT_PACKET_RATE)) {
return true;
return Some(DROP_REASON_RATE_LIMIT_PKT);
}
if is_syn_only(pkt) {
if check_rate(&IPV6_SYN_RATE_MAP, &src_ip, now, window, get_config(CFG_SYN_RATE, DEFAULT_SYN_RATE)) {
return true;
return Some(DROP_REASON_RATE_LIMIT_SYN);
}
}
if matches!(pkt.protocol, IpProto::Udp) {
if check_rate(&IPV6_UDP_RATE_MAP, &src_ip, now, window, get_config(CFG_UDP_RATE, DEFAULT_UDP_RATE)) {
return true;
return Some(DROP_REASON_RATE_LIMIT_UDP);
}
}
if pkt.dst_port == 53 {
if matches!(pkt.protocol, IpProto::Udp) && pkt.dst_port == 53 {
if check_rate(&IPV6_DNS_RATE_MAP, &src_ip, now, window, get_config(CFG_DNS_RATE, DEFAULT_DNS_RATE)) {
return true;
return Some(DROP_REASON_RATE_LIMIT_DNS);
}
}
false
None
}

69
ingress-ebpf/src/main.rs
View File

@ -4,12 +4,15 @@ mod action;
use aya_ebpf::bindings::xdp_action;
use aya_ebpf::macros::{map, xdp};
use aya_ebpf::maps::{Array, PerCpuArray, ProgramArray, XskMap};
use aya_ebpf::maps::{Array, PerCpuArray, ProgramArray, RingBuf, XskMap};
use common::ebpf::symmetric_hash::symmetric_queue_id;
use aya_ebpf::programs::XdpContext;
#[allow(unused_imports)]
use aya_log_ebpf::info;
use common::ebpf::parsing;
use common::define::pipeline::*;
use common::define::drop_reason::*;
use common::model::drop_event::DropEvent;
use common::model::parsed_packet::ParsedPacket;
use crate::action::{access_control, rate_limit, protocol_filter};
@ -22,6 +25,19 @@ static NEXT_STAGE: Array<u32> = Array::with_max_entries(MAX_STAGES, 0);
static PARSED_PACKET: PerCpuArray<ParsedPacket> = PerCpuArray::with_max_entries(1, 0);
#[map]
static INGRESS_XSKS_MAP: XskMap = XskMap::pinned(64, 0);
#[map]
static NUM_QUEUES: Array<u32> = Array::with_max_entries(1, 0);
#[map]
static DROP_EVENTS: RingBuf = RingBuf::with_byte_size(256 * 1024, 0);
#[xdp]
pub fn net_guardia(ctx: XdpContext) -> u32 {
unsafe {
packet_intake(&ctx);
let _ = PROGRAM_ARRAY.tail_call(&ctx, STAGE_TRANSMISSION);
xdp_action::XDP_PASS
}
}
#[inline(always)]
unsafe fn chain_next(ctx: &XdpContext, current_id: u32) {
@ -35,12 +51,20 @@ unsafe fn chain_next(ctx: &XdpContext, current_id: u32) {
}
}
#[xdp]
pub fn net_guardia(ctx: XdpContext) -> u32 {
unsafe {
packet_intake(&ctx);
let _ = PROGRAM_ARRAY.tail_call(&ctx, STAGE_TRANSMISSION);
xdp_action::XDP_PASS
#[inline(always)]
unsafe fn emit_drop_event(pkt: &ParsedPacket, reason: u8) {
if let Some(mut entry) = DROP_EVENTS.reserve::<DropEvent>(0) {
let event = entry.as_mut_ptr();
(*event).timestamp_ns = aya_ebpf::helpers::bpf_ktime_get_ns();
(*event).src_ip = pkt.src_ip;
(*event).dst_ip = pkt.dst_ip;
(*event).src_port = pkt.src_port;
(*event).dst_port = pkt.dst_port;
(*event).protocol = pkt.protocol as u8;
(*event).reason = reason;
(*event).ip_version = pkt.ip_version;
(*event)._pad = 0;
entry.submit(0);
}
}
@ -76,7 +100,12 @@ unsafe fn try_access_control(ctx: &XdpContext) -> Result<u32, ()> {
let _ = PROGRAM_ARRAY.tail_call(ctx, STAGE_TRANSMISSION);
return Err(());
}
if access_control::ipv4_is_geo_blocked(pkt) {
emit_drop_event(pkt, DROP_REASON_GEO_BLOCK);
return Ok(xdp_action::XDP_DROP);
}
if access_control::ipv4_is_blacklisted(pkt) {
emit_drop_event(pkt, DROP_REASON_ACL_BLACKLIST);
return Ok(xdp_action::XDP_DROP);
}
}
@ -85,7 +114,12 @@ unsafe fn try_access_control(ctx: &XdpContext) -> Result<u32, ()> {
let _ = PROGRAM_ARRAY.tail_call(ctx, STAGE_TRANSMISSION);
return Err(());
}
if access_control::ipv6_is_geo_blocked(pkt) {
emit_drop_event(pkt, DROP_REASON_GEO_BLOCK);
return Ok(xdp_action::XDP_DROP);
}
if access_control::ipv6_is_blacklisted(pkt) {
emit_drop_event(pkt, DROP_REASON_ACL_BLACKLIST);
return Ok(xdp_action::XDP_DROP);
}
}
@ -114,7 +148,8 @@ unsafe fn try_rate_limit(ctx: &XdpContext) -> Result<u32, ()> {
unsafe {
let ptr = PARSED_PACKET.get_ptr(0).ok_or(())?;
let pkt = &*ptr;
if rate_limit::should_drop(pkt) {
if let Some(reason) = rate_limit::should_drop(pkt) {
emit_drop_event(pkt, reason);
return Ok(xdp_action::XDP_DROP);
}
chain_next(ctx, STAGE_RATE_LIMIT);
@ -125,7 +160,7 @@ unsafe fn try_rate_limit(ctx: &XdpContext) -> Result<u32, ()> {
#[xdp]
pub fn protocol_filter(ctx: XdpContext) -> u32 {
unsafe {
match try_service(&ctx) {
match try_protocol_filter(&ctx) {
Ok(action) => action,
Err(_) => {
chain_next(&ctx, STAGE_SERVICE);
@ -136,20 +171,23 @@ pub fn protocol_filter(ctx: XdpContext) -> u32 {
}
#[inline(always)]
unsafe fn try_service(ctx: &XdpContext) -> Result<u32, ()> {
unsafe fn try_protocol_filter(ctx: &XdpContext) -> Result<u32, ()> {
unsafe {
let start = ctx.data();
let end = ctx.data_end();
let ptr = PARSED_PACKET.get_ptr(0).ok_or(())?;
let pkt = &*ptr;
match pkt.ip_version {
4 => {
if protocol_filter::ipv4_service_rule_violation(start, end, pkt) {
emit_drop_event(pkt, DROP_REASON_PROTOCOL_FILTER);
return Ok(xdp_action::XDP_DROP);
}
}
6 => {
if protocol_filter::ipv6_service_rule_violation(start, end, pkt) {
emit_drop_event(pkt, DROP_REASON_PROTOCOL_FILTER);
return Ok(xdp_action::XDP_DROP);
}
}
@ -160,9 +198,18 @@ unsafe fn try_service(ctx: &XdpContext) -> Result<u32, ()> {
}
}
#[inline(always)]
unsafe fn compute_symmetric_queue_id() -> Option<u32> {
let pkt = &*PARSED_PACKET.get_ptr(0)?;
let num_q = *NUM_QUEUES.get(0)?;
symmetric_queue_id(pkt, num_q)
}
#[xdp]
pub fn transmission(ctx: XdpContext) -> u32 {
let queue_id = unsafe { (*ctx.ctx).rx_queue_index };
let queue_id = unsafe {
compute_symmetric_queue_id().unwrap_or((*ctx.ctx).rx_queue_index)
};
match INGRESS_XSKS_MAP.redirect(queue_id, 0) {
Ok(action) => action,
Err(_) => xdp_action::XDP_PASS,

6
macros/Cargo.toml
View File

@ -7,6 +7,6 @@ edition = "2024"
proc-macro = true
[dependencies]
proc-macro2 = "1.0"
quote = "1.0"
syn = { version = "2.0", features = ["full"] }
proc-macro2 = { workspace = true }
quote = { workspace = true }
syn = { workspace = true }

66
net-guardia/Cargo.toml
View File

@ -7,37 +7,49 @@ edition = "2024"
common = { path = "../common", features = ["user"] }
macros = { path = "../macros" }
actix = "0.13.5"
actix-cors = "0.7.1"
actix-web = "4.11.0"
actix-ws = "0.4.0"
# eBPF userspace
aya = { workspace = true }
aya-log = { workspace = true }
network-types = { workspace = true }
crossbeam = "0.8.4"
futures-util = "0.3.30"
libc = { workspace = true }
mime_guess = "2.0.5"
parking_lot = "0.12.5"
rust-embed = "8.7.2"
serde = { workspace = true }
serde_json = "1.0.143"
sysinfo = "0.38.2"
thiserror = "2.0.3"
tokio = { version = "1.40.0", features = ["full", "macros"] }
tokio-tungstenite = "0.28.0"
toml = "1.0.3"
tracing = "0.1.41"
tracing-appender = "0.2.3"
tracing-subscriber = { version = "0.3.20", features = ["env-filter"] }
url = "2.5.7"
xsk-rs = { workspace = true }
maxminddb = "0.27.1"
lru = "0.16.2"
futures = "0.3.31"
tract-onnx = "0.22.0"
#csv = "1.4.0"
#anyhow = "1.0.100"
libxdp-sys = { workspace = true }
libc = { workspace = true }
# Web
actix = { workspace = true }
actix-web = { workspace = true }
actix-cors = { workspace = true }
actix-ws = { workspace = true }
rust-embed = "8.11.0"
mime_guess = "2.0.5"
url = "2.5.8"
tokio-tungstenite = "0.28.0"
# Serialization
serde = { workspace = true }
serde_json = { workspace = true }
toml = "1.0.7"
# Async
tokio = { workspace = true }
futures-util = { workspace = true }
crossbeam = { workspace = true }
# Logging
tracing = { workspace = true }
tracing-appender = { workspace = true }
tracing-subscriber = { workspace = true }
# ML
tract-onnx = { workspace = true }
# Utilities
parking_lot = { workspace = true }
thiserror = { workspace = true }
sysinfo = { workspace = true }
maxminddb = { workspace = true }
ipnetwork = { workspace = true }
lru = { workspace = true }
[build-dependencies]
cargo_metadata = { workspace = true }

131
net-guardia/build.rs
View File

@ -8,16 +8,16 @@ use std::time::SystemTime;
use cargo_metadata::{Artifact, CompilerMessage, Message, Metadata, MetadataCommand, Package, Target, TargetKind};
fn main() {
build_ingress_ebpf();
build_egress_ebpf();
build_ebpf_package("ingress-ebpf", "ingress-ebpf");
build_ebpf_package("egress-ebpf", "egress-ebpf");
build_frontend();
}
fn build_ingress_ebpf() {
fn build_ebpf_package(package_name: &str, target_subdir: &str) {
let Metadata { packages, .. } = MetadataCommand::new().no_deps().exec().unwrap();
let ebpf_package = packages
.into_iter()
.find(|Package { name, .. }| **name == "ingress-ebpf")
.find(|Package { name, .. }| **name == *package_name)
.unwrap();
let out_dir = env::var_os("OUT_DIR").unwrap();
@ -42,6 +42,7 @@ fn build_ingress_ebpf() {
let ebpf_dir = manifest_path.parent().unwrap();
println!("cargo:rerun-if-changed={}", ebpf_dir.as_str());
println!("cargo:rerun-if-changed=../common/src");
let mut cmd = Command::new("cargo");
cmd.args([
@ -62,127 +63,7 @@ fn build_ingress_ebpf() {
}
cmd.current_dir(ebpf_dir);
let ebpf_target_dir = out_dir.join("../ingress-ebpf");
cmd.arg("--target-dir").arg(&ebpf_target_dir);
let mut child = cmd
.stdout(Stdio::piped())
.stderr(Stdio::piped())
.spawn()
.unwrap_or_else(|err| panic!("failed to spawn {cmd:?}: {err}"));
let Child { stdout, stderr, .. } = &mut child;
let stderr = stderr.take().unwrap();
let stderr = BufReader::new(stderr);
let stderr = std::thread::spawn(move || {
for line in stderr.lines() {
let line = line.unwrap();
println!("{line}");
}
});
let stdout = stdout.take().unwrap();
let stdout = BufReader::new(stdout);
let mut executables = Vec::new();
for message in Message::parse_stream(stdout) {
#[allow(clippy::collapsible_match)]
match message.expect("valid JSON") {
Message::CompilerArtifact(Artifact {
executable,
target: Target { name, .. },
..
}) => {
if let Some(executable) = executable {
executables.push((name, executable.into_std_path_buf()));
}
}
Message::CompilerMessage(CompilerMessage { message, .. }) => {
for line in message.rendered.unwrap_or_default().split('\n') {
println!("{line}");
}
}
Message::TextLine(line) => {
println!("{line}");
}
_ => {}
}
}
let status = child
.wait()
.unwrap_or_else(|err| panic!("failed to wait for {cmd:?}: {err}"));
assert_eq!(status.code(), Some(0), "{cmd:?} failed: {status:?}");
stderr.join().map_err(std::panic::resume_unwind).unwrap();
for (name, binary) in executables {
let dst = out_dir.join(name);
let _: u64 =
fs::copy(&binary, &dst).unwrap_or_else(|err| panic!("failed to copy {binary:?} to {dst:?}: {err}"));
}
} else {
let Package { targets, .. } = ebpf_package;
for Target { name, kind, .. } in targets {
if *kind != [TargetKind::Bin] {
continue;
}
let dst = out_dir.join(name);
fs::write(&dst, []).unwrap_or_else(|err| panic!("failed to create {dst:?}: {err}"));
}
}
}
fn build_egress_ebpf() {
let Metadata { packages, .. } = MetadataCommand::new().no_deps().exec().unwrap();
let ebpf_package = packages
.into_iter()
.find(|Package { name, .. }| **name == "egress-ebpf")
.unwrap();
let out_dir = env::var_os("OUT_DIR").unwrap();
let out_dir = PathBuf::from(out_dir);
let endian = env::var_os("CARGO_CFG_TARGET_ENDIAN").unwrap();
let target = if endian == "big" {
"bpfeb"
} else if endian == "little" {
"bpfel"
} else {
panic!("unsupported endian={:?}", endian)
};
let build_ebpf = true;
if build_ebpf {
let arch = env::var_os("CARGO_CFG_TARGET_ARCH").unwrap();
let target = format!("{target}-unknown-none");
let Package { manifest_path, .. } = ebpf_package;
let ebpf_dir = manifest_path.parent().unwrap();
println!("cargo:rerun-if-changed={}", ebpf_dir.as_str());
let mut cmd = Command::new("cargo");
cmd.args([
"build",
"-Z",
"build-std=core",
"--bins",
"--message-format=json",
"--release",
"--target",
&target,
]);
cmd.env("CARGO_CFG_BPF_TARGET_ARCH", arch);
cmd.env("CARGO_TERM_COLOR", "always");
for key in ["RUSTUP_TOOLCHAIN", "RUSTC", "RUSTC_WORKSPACE_WRAPPER"] {
cmd.env_remove(key);
}
cmd.current_dir(ebpf_dir);
let ebpf_target_dir = out_dir.join("../egress-ebpf");
let ebpf_target_dir = out_dir.join(format!("../{target_subdir}"));
cmd.arg("--target-dir").arg(&ebpf_target_dir);
let mut child = cmd

5
net-guardia/src/core/ebpf/access_control.rs
View File

@ -149,7 +149,6 @@ impl<T: NativeConvert + Pod> MapWrapper<T> {
fn add(&mut self, ip: T, port: Port) -> Result<(), Error> {
if port == 0 {
// port 0 in API = match all ports
self.map
.insert(ip, PortRule::new_match_all(), 0)
.map_err(EbpfError::MapOperationError)?;
@ -159,7 +158,7 @@ impl<T: NativeConvert + Pod> MapWrapper<T> {
let mut rule = self.map.get(&ip, 0).unwrap_or_else(|_| PortRule::new_empty());
if rule.is_match_all() {
return Ok(()); // already matching all
return Ok(());
}
if !rule.add_port(port) {
@ -174,7 +173,6 @@ impl<T: NativeConvert + Pod> MapWrapper<T> {
fn remove(&mut self, ip: T, port: Port) -> Result<(), Error> {
if port == 0 {
// port 0 in API = remove entire IP
self.map.remove(&ip).map_err(EbpfError::MapOperationError)?;
return Ok(());
}
@ -182,7 +180,6 @@ impl<T: NativeConvert + Pod> MapWrapper<T> {
let mut rule = self.map.get(&ip, 0).map_err(|_| EbpfError::IpDoesNotExist)?;
if rule.is_match_all() {
// Can't remove a single port from match_all — remove the whole IP
self.map.remove(&ip).map_err(EbpfError::MapOperationError)?;
return Ok(());
}

247
net-guardia/src/core/ebpf/dns_filter.rs Normal file
View File

@ -0,0 +1,247 @@
use std::collections::HashSet;
use common::model::dns_name::DnsName;
use parking_lot::RwLock;
use crate::model::error::misc::MiscError;
use crate::model::error::Error;
pub struct DnsFilter {
blacklist: RwLock<HashSet<DnsName>>,
}
impl DnsFilter {
pub fn new() -> Self {
Self {
blacklist: RwLock::new(HashSet::new()),
}
}
pub fn add_domain(&self, domain: &str) -> Result<(), Error> {
let name = domain_to_wire_format(domain)?;
self.blacklist.write().insert(name);
Ok(())
}
pub fn remove_domain(&self, domain: &str) -> Result<(), Error> {
let name = domain_to_wire_format(domain)?;
self.blacklist.write().remove(&name);
Ok(())
}
pub fn list_domains(&self) -> Vec<String> {
self.blacklist
.read()
.iter()
.filter_map(|name| wire_format_to_domain(name))
.collect()
}
/// Check if a DNS query name (in wire format) or any of its parent domains is blacklisted.
pub fn is_blacklisted(&self, name: &DnsName, name_len: usize) -> bool {
let bl = self.blacklist.read();
if bl.is_empty() {
return false;
}
// Check exact match
if bl.contains(name) {
return true;
}
// Check parent domains
let mut offset: usize = 0;
loop {
if offset >= name_len || offset >= 128 {
break;
}
let lbl = name.data[offset] as usize;
if lbl == 0 {
break;
}
offset += 1 + lbl;
if offset >= name_len || offset >= 128 {
break;
}
if name.data[offset] == 0 {
break;
}
let mut parent = DnsName::zeroed();
let remaining = name_len - offset;
parent.data[..remaining.min(128)]
.copy_from_slice(&name.data[offset..offset + remaining.min(128)]);
if bl.contains(&parent) {
return true;
}
}
false
}
/// Parse DNS query name from raw packet bytes.
/// Returns the DNS name in wire format and the name length, or None if not a DNS query.
pub fn parse_query_name(raw: &[u8]) -> Option<(DnsName, usize)> {
if raw.len() < 14 {
return None;
}
let eth_type = u16::from_be_bytes([raw[12], raw[13]]);
let l3_header_len = match eth_type {
0x0800 => {
// IPv4
if raw.len() < 24 {
return None;
}
let ihl = (raw[14] & 0x0F) as usize * 4;
// Check protocol is UDP (17)
if raw[14 + 9] != 17 {
return None;
}
ihl
}
0x86DD => {
// IPv6
if raw.len() < 54 + 8 {
return None;
}
// Check next header is UDP (17)
if raw[14 + 6] != 17 {
return None;
}
40
}
_ => return None,
};
let udp_start = 14 + l3_header_len;
if udp_start + 8 > raw.len() {
return None;
}
// Check destination port is 53
let dst_port = u16::from_be_bytes([raw[udp_start + 2], raw[udp_start + 3]]);
if dst_port != 53 {
return None;
}
let dns_header_offset = udp_start + 8;
if dns_header_offset + 12 > raw.len() {
return None;
}
// QR bit must be 0 (query, not response)
if raw[dns_header_offset + 2] & 0x80 != 0 {
return None;
}
// QDCOUNT must be > 0
if raw[dns_header_offset + 4] == 0 && raw[dns_header_offset + 5] == 0 {
return None;
}
let dns_qname_offset = dns_header_offset + 12;
if dns_qname_offset >= raw.len() {
return None;
}
let mut name = DnsName::zeroed();
let mut pos = dns_qname_offset;
let mut out: usize = 0;
for _ in 0..32 {
if pos >= raw.len() {
return None;
}
let ll = raw[pos] as usize;
if ll == 0 {
if out < 128 {
name.data[out] = 0;
}
return Some((name, out + 1));
}
if ll >= 64 {
return None;
}
if out + 1 + ll >= 128 {
return None;
}
if pos + 1 + ll > raw.len() {
return None;
}
name.data[out] = ll as u8;
out += 1;
for j in 0..ll {
let mut b = raw[pos + 1 + j];
if b >= b'A' && b <= b'Z' {
b += 32;
}
name.data[out] = b;
out += 1;
}
pos += 1 + ll;
}
None
}
}
/// Convert a human-readable domain name (e.g., "example.com") to DNS wire format.
/// The result is a DnsName with lowercase, length-prefixed labels, zero-terminated and zero-padded.
fn domain_to_wire_format(domain: &str) -> Result<DnsName, Error> {
let domain = domain.trim().trim_end_matches('.').to_lowercase();
let mut name = DnsName::zeroed();
let mut pos: usize = 0;
for label in domain.split('.') {
let label_bytes = label.as_bytes();
let label_len = label_bytes.len();
if label_len == 0 || label_len >= 64 {
return Err(MiscError::InvalidDnsName {
reason: format!("invalid label length: {}", label_len),
}
.into());
}
if pos + 1 + label_len >= 128 {
return Err(MiscError::InvalidDnsName {
reason: format!("domain name too long: {}", domain),
}
.into());
}
name.data[pos] = label_len as u8;
pos += 1;
name.data[pos..pos + label_len].copy_from_slice(label_bytes);
pos += label_len;
}
// Terminating zero byte
if pos < 128 {
name.data[pos] = 0;
}
Ok(name)
}
/// Convert DNS wire format back to a human-readable domain name.
fn wire_format_to_domain(name: &DnsName) -> Option<String> {
let mut labels: Vec<String> = Vec::new();
let mut pos: usize = 0;
loop {
if pos >= 128 {
break;
}
let label_len = name.data[pos] as usize;
if label_len == 0 {
break;
}
if label_len >= 64 || pos + 1 + label_len > 128 {
return None;
}
pos += 1;
let label = core::str::from_utf8(&name.data[pos..pos + label_len]).ok()?;
labels.push(label.to_string());
pos += label_len;
}
if labels.is_empty() {
None
} else {
Some(labels.join("."))
}
}

167
net-guardia/src/core/ebpf/drop_monitor.rs Normal file
View File

@ -0,0 +1,167 @@
use std::sync::Arc;
use std::mem;
use std::time::Duration;
use aya::maps::{MapData, RingBuf};
use serde::Serialize;
use tokio::sync::{broadcast, oneshot};
use common::define::drop_reason::*;
use common::model::drop_event::DropEvent as RawDropEvent;
use parking_lot::Mutex;
const DROP_CHANNEL_CAPACITY: usize = 100;
#[derive(Debug, Clone, Serialize)]
pub struct DropEventMessage {
pub timestamp_ns: u64,
pub src_ip: String,
pub dst_ip: String,
pub src_port: u16,
pub dst_port: u16,
pub protocol: u8,
pub reason: String,
pub ip_version: u8,
}
#[derive(Default, Clone, Serialize)]
pub struct DropCounters {
pub acl_blacklist: u64,
pub rate_limit_pkt: u64,
pub rate_limit_syn: u64,
pub rate_limit_udp: u64,
pub rate_limit_dns: u64,
pub protocol_filter: u64,
pub dns_blacklist: u64,
pub geo_block: u64,
pub total: u64,
}
pub struct DropMonitor {
broadcast_tx: broadcast::Sender<DropEventMessage>,
counters: Mutex<DropCounters>,
}
impl DropMonitor {
pub fn new() -> Self {
let (tx, _) = broadcast::channel(DROP_CHANNEL_CAPACITY);
Self {
broadcast_tx: tx,
counters: Mutex::new(DropCounters::default()),
}
}
pub fn subscribe(&self) -> broadcast::Receiver<DropEventMessage> {
self.broadcast_tx.subscribe()
}
pub fn get_counters(&self) -> DropCounters {
self.counters.lock().clone()
}
fn process_event(&self, raw: &RawDropEvent) {
// Update counters
{
let mut c = self.counters.lock();
c.total += 1;
match raw.reason {
DROP_REASON_ACL_BLACKLIST => c.acl_blacklist += 1,
DROP_REASON_RATE_LIMIT_PKT => c.rate_limit_pkt += 1,
DROP_REASON_RATE_LIMIT_SYN => c.rate_limit_syn += 1,
DROP_REASON_RATE_LIMIT_UDP => c.rate_limit_udp += 1,
DROP_REASON_RATE_LIMIT_DNS => c.rate_limit_dns += 1,
DROP_REASON_PROTOCOL_FILTER => c.protocol_filter += 1,
DROP_REASON_DNS_BLACKLIST => c.dns_blacklist += 1,
DROP_REASON_GEO_BLOCK => c.geo_block += 1,
_ => {}
}
}
let reason_str = reason_to_str(raw.reason);
// Format IPs based on version
let (src_ip, dst_ip) = format_ips(raw);
let msg = DropEventMessage {
timestamp_ns: raw.timestamp_ns,
src_ip,
dst_ip,
src_port: raw.src_port,
dst_port: raw.dst_port,
protocol: raw.protocol,
reason: reason_str.to_string(),
ip_version: raw.ip_version,
};
let _ = self.broadcast_tx.send(msg);
}
}
impl Default for DropMonitor {
fn default() -> Self {
Self::new()
}
}
fn format_ips(raw: &RawDropEvent) -> (String, String) {
match raw.ip_version {
4 => {
let src = format!("{}.{}.{}.{}", raw.src_ip[0], raw.src_ip[1], raw.src_ip[2], raw.src_ip[3]);
let dst = format!("{}.{}.{}.{}", raw.dst_ip[0], raw.dst_ip[1], raw.dst_ip[2], raw.dst_ip[3]);
(src, dst)
}
_ => {
// IPv6 - format as hex
let src = format_ipv6(&raw.src_ip);
let dst = format_ipv6(&raw.dst_ip);
(src, dst)
}
}
}
fn format_ipv6(bytes: &[u8; 16]) -> String {
std::net::Ipv6Addr::from(*bytes).to_string()
}
fn reason_to_str(reason: u8) -> &'static str {
match reason {
DROP_REASON_ACL_BLACKLIST => "acl_blacklist",
DROP_REASON_RATE_LIMIT_PKT => "rate_limit_packet",
DROP_REASON_RATE_LIMIT_SYN => "rate_limit_syn",
DROP_REASON_RATE_LIMIT_UDP => "rate_limit_udp",
DROP_REASON_RATE_LIMIT_DNS => "rate_limit_dns",
DROP_REASON_PROTOCOL_FILTER => "protocol_filter",
DROP_REASON_DNS_BLACKLIST => "dns_blacklist",
DROP_REASON_GEO_BLOCK => "geo_block",
_ => "unknown",
}
}
/// Start the ring buffer consumer as a tokio task. Returns a shutdown sender.
pub async fn start_consumer(
ring_buf: RingBuf<MapData>,
monitor: Arc<DropMonitor>,
) -> oneshot::Sender<()> {
let (shutdown_tx, mut shutdown_rx) = oneshot::channel();
tokio::spawn(async move {
let mut ring_buf = ring_buf;
let mut interval = tokio::time::interval(Duration::from_millis(100));
loop {
tokio::select! {
_ = &mut shutdown_rx => break,
_ = interval.tick() => {}
}
while let Some(item) = ring_buf.next() {
if item.len() >= mem::size_of::<RawDropEvent>() {
let event = unsafe { &*(item.as_ptr() as *const RawDropEvent) };
monitor.process_event(event);
}
}
}
});
shutdown_tx
}

186
net-guardia/src/core/ebpf/geo_block.rs Normal file
View File

@ -0,0 +1,186 @@
use std::collections::{HashMap as StdHashMap, HashSet};
use std::sync::Arc;
use aya::maps::lpm_trie::{Key, LpmTrie};
use aya::maps::MapData;
use aya::Ebpf;
use ipnetwork::IpNetwork;
use macros::log;
use maxminddb::{geoip2, Reader};
use parking_lot::RwLock;
use crate::core::infrastructure::app_config::AppConfig;
use crate::model::error::ebpf::EbpfError;
use crate::model::error::misc::MiscError;
use crate::model::error::Error;
use crate::model::log::system::SystemLog;
/// Pre-indexed GeoIP prefix table, built once at startup.
struct GeoIndex {
v4: StdHashMap<String, Vec<(u32, u32)>>, // country -> [(ip_be, prefix_len)]
v6: StdHashMap<String, Vec<(u128, u32)>>,
}
pub struct GeoBlock {
geo_block_v4: RwLock<LpmTrie<MapData, u32, u8>>,
geo_block_v6: RwLock<LpmTrie<MapData, u128, u8>>,
blocked_countries: RwLock<HashSet<String>>,
index: Arc<GeoIndex>,
}
impl GeoBlock {
pub fn new(ebpf: &mut Ebpf, app_config: &AppConfig) -> Result<Self, Error> {
let v4_map = ebpf.take_map("GEO_BLOCK_V4").ok_or(EbpfError::MapNotFound)?;
let v4_trie = LpmTrie::try_from(v4_map).map_err(EbpfError::MapOperationError)?;
let v6_map = ebpf.take_map("GEO_BLOCK_V6").ok_or(EbpfError::MapNotFound)?;
let v6_trie = LpmTrie::try_from(v6_map).map_err(EbpfError::MapOperationError)?;
let db_path = &app_config.misc.geoip_db_name;
let reader = Reader::open_readfile(db_path)
.map_err(|e| MiscError::GeoIPDatabaseError {
path: db_path.clone(),
reason: e.to_string(),
})?;
let index = Self::build_index(&reader)?;
Ok(Self {
geo_block_v4: RwLock::new(v4_trie),
geo_block_v6: RwLock::new(v6_trie),
blocked_countries: RwLock::new(HashSet::new()),
index: Arc::new(index),
})
}
/// Build index from MaxMind DB at startup. One-time cost.
fn build_index(reader: &Reader<Vec<u8>>) -> Result<GeoIndex, Error> {
let mut v4: StdHashMap<String, Vec<(u32, u32)>> = StdHashMap::new();
let mut v6: StdHashMap<String, Vec<(u128, u32)>> = StdHashMap::new();
let ipv4_all: IpNetwork = "0.0.0.0/0".parse().unwrap();
if let Ok(iter) = reader.within(ipv4_all, Default::default()) {
for result in iter {
let Ok(lookup) = result else { continue };
let Ok(network) = lookup.network() else { continue };
let Ok(Some(city)) = lookup.decode::<geoip2::City>() else { continue };
let Some(code) = city.country.iso_code else { continue };
let code = code.to_uppercase();
if let IpNetwork::V4(v4_net) = network {
let ip_be = u32::from(v4_net.ip()).to_be();
v4.entry(code).or_default().push((ip_be, v4_net.prefix() as u32));
}
}
}
let ipv6_all: IpNetwork = "::/0".parse().unwrap();
if let Ok(iter) = reader.within(ipv6_all, Default::default()) {
for result in iter {
let Ok(lookup) = result else { continue };
let Ok(network) = lookup.network() else { continue };
let Ok(Some(city)) = lookup.decode::<geoip2::City>() else { continue };
let Some(code) = city.country.iso_code else { continue };
let code = code.to_uppercase();
if let IpNetwork::V6(v6_net) = network {
let ip_be = u128::from(v6_net.ip()).to_be();
v6.entry(code).or_default().push((ip_be, v6_net.prefix() as u32));
}
}
}
Ok(GeoIndex { v4, v6 })
}
/// Block multiple countries at once, rebuilding tries only once.
pub fn block_countries(&self, country_codes: &[String]) -> Result<u64, Error> {
{
let mut countries = self.blocked_countries.write();
for code in country_codes {
let upper = code.trim().to_uppercase();
if upper.len() == 2 && upper.chars().all(|c| c.is_ascii_alphabetic()) {
countries.insert(upper);
}
}
}
self.rebuild_tries()
}
/// Unblock multiple countries at once, rebuilding tries only once.
pub fn unblock_countries(&self, country_codes: &[String]) -> Result<u64, Error> {
{
let mut countries = self.blocked_countries.write();
for code in country_codes {
countries.remove(&code.trim().to_uppercase());
}
}
self.rebuild_tries()
}
pub fn get_blocked_countries(&self) -> Vec<String> {
self.blocked_countries.read().iter().cloned().collect()
}
/// Rebuild LPM tries from pre-indexed data. Fast — no DB scan.
fn rebuild_tries(&self) -> Result<u64, Error> {
let countries = self.blocked_countries.read().clone();
// Collect entries from index (no DB scan)
let mut v4_entries: Vec<(Key<u32>, u8)> = Vec::new();
let mut v6_entries: Vec<(Key<u128>, u8)> = Vec::new();
for code in &countries {
if let Some(prefixes) = self.index.v4.get(code) {
for &(ip_be, prefix_len) in prefixes {
v4_entries.push((Key::new(prefix_len, ip_be), 1u8));
}
}
if let Some(prefixes) = self.index.v6.get(code) {
for &(ip_be, prefix_len) in prefixes {
v6_entries.push((Key::new(prefix_len, ip_be), 1u8));
}
}
}
// Lock, clear, insert
let mut v4_trie = self.geo_block_v4.write();
let mut v6_trie = self.geo_block_v6.write();
Self::clear_trie_v4(&mut v4_trie);
Self::clear_trie_v6(&mut v6_trie);
let mut count = 0u64;
for (key, val) in &v4_entries {
if v4_trie.insert(key, *val, 0).is_ok() {
count += 1;
}
}
for (key, val) in &v6_entries {
if v6_trie.insert(key, *val, 0).is_ok() {
count += 1;
}
}
Ok(count)
}
fn clear_trie_v4(trie: &mut LpmTrie<MapData, u32, u8>) {
let keys: Vec<Key<u32>> = trie.iter()
.filter_map(|r| r.ok())
.map(|(k, _)| k)
.collect();
for key in keys {
let _ = trie.remove(&key);
}
}
fn clear_trie_v6(trie: &mut LpmTrie<MapData, u128, u8>) {
let keys: Vec<Key<u128>> = trie.iter()
.filter_map(|r| r.ok())
.map(|(k, _)| k)
.collect();
for key in keys {
let _ = trie.remove(&key);
}
}
}

32
net-guardia/src/core/ebpf/mod.rs
View File

@ -1,4 +1,7 @@
pub mod access_control;
pub mod dns_filter;
pub mod drop_monitor;
pub mod geo_block;
pub mod rate_limit;
pub mod protocol_filter;
pub mod xsk_manager;
@ -6,16 +9,22 @@ pub mod xsk_manager;
use std::sync::Arc;
use aya::Ebpf;
use aya::maps::{MapData, RingBuf};
use crossbeam::queue::SegQueue;
use macros::log;
use parking_lot::Mutex;
use tokio::sync::oneshot;
use crate::core::ebpf::access_control::AccessControl;
use crate::core::ebpf::dns_filter::DnsFilter;
use crate::core::ebpf::drop_monitor::DropMonitor;
use crate::core::ebpf::geo_block::GeoBlock;
use crate::core::ebpf::rate_limit::RateLimitConfig;
use crate::core::ebpf::protocol_filter::ProtocolFilter;
use crate::core::ebpf::xsk_manager::XskManager;
use crate::core::infrastructure::app_config::AppConfig;
use crate::core::ml::engine::Engine;
use crate::model::error::ebpf::EbpfError;
use crate::model::error::system::SystemError;
use crate::model::error::Error;
@ -23,7 +32,11 @@ pub struct EbpfServices {
pub xsk_manager: Arc<XskManager>,
pub access_control: Arc<AccessControl>,
pub protocol_filter: Arc<ProtocolFilter>,
pub dns_filter: Arc<DnsFilter>,
pub geo_block: Arc<GeoBlock>,
pub rate_limit: Arc<RateLimitConfig>,
pub drop_monitor: Arc<DropMonitor>,
drop_ring_buf: Mutex<Option<RingBuf<MapData>>>,
pub shutdowns: SegQueue<oneshot::Sender<()>>,
}
@ -32,19 +45,36 @@ impl EbpfServices {
let xsk_manager = XskManager::new(app_config.clone(), ingress_ebpf, egress_ebpf)?;
let access_control = AccessControl::new(ingress_ebpf)?;
let protocol_filter = ProtocolFilter::new(ingress_ebpf)?;
let dns_filter = DnsFilter::new();
let geo_block = GeoBlock::new(ingress_ebpf, &app_config)?;
let rate_limit = RateLimitConfig::new(ingress_ebpf)?;
let drop_monitor = Arc::new(DropMonitor::new());
let drop_ring_buf = {
let map = ingress_ebpf.take_map("DROP_EVENTS").ok_or(EbpfError::MapNotFound)?;
RingBuf::try_from(map).map_err(EbpfError::MapOperationError)?
};
Ok(Self {
xsk_manager: Arc::new(xsk_manager),
access_control: Arc::new(access_control),
protocol_filter: Arc::new(protocol_filter),
dns_filter: Arc::new(dns_filter),
geo_block: Arc::new(geo_block),
rate_limit: Arc::new(rate_limit),
drop_monitor,
drop_ring_buf: Mutex::new(Some(drop_ring_buf)),
shutdowns: SegQueue::new(),
})
}
pub async fn run(self: Arc<Self>, ml_engine: Arc<Engine>) -> Result<(), Error> {
let xsk_manager = self.xsk_manager.clone();
xsk_manager.run(Some(ml_engine), &self.shutdowns)?;
xsk_manager.run(Some(ml_engine), Some(self.dns_filter.clone()), &self.shutdowns)?;
if let Some(ring_buf) = self.drop_ring_buf.lock().take() {
let shutdown = drop_monitor::start_consumer(ring_buf, self.drop_monitor.clone()).await;
self.shutdowns.push(shutdown);
}
Ok(())
}

20
net-guardia/src/core/ebpf/rate_limit.rs
View File

@ -40,4 +40,24 @@ impl RateLimitConfig {
self.config_map.lock().set(4, ns, 0).map_err(EbpfError::MapOperationError)?;
Ok(())
}
pub fn get_packet_rate(&self) -> Result<u64, Error> {
self.config_map.lock().get(&0, 0).map_err(|e| EbpfError::MapOperationError(e).into())
}
pub fn get_syn_rate(&self) -> Result<u64, Error> {
self.config_map.lock().get(&1, 0).map_err(|e| EbpfError::MapOperationError(e).into())
}
pub fn get_udp_rate(&self) -> Result<u64, Error> {
self.config_map.lock().get(&2, 0).map_err(|e| EbpfError::MapOperationError(e).into())
}
pub fn get_dns_rate(&self) -> Result<u64, Error> {
self.config_map.lock().get(&3, 0).map_err(|e| EbpfError::MapOperationError(e).into())
}
pub fn get_window_ns(&self) -> Result<u64, Error> {
self.config_map.lock().get(&4, 0).map_err(|e| EbpfError::MapOperationError(e).into())
}
}

164
net-guardia/src/core/ebpf/xsk_manager.rs
View File

@ -16,6 +16,7 @@ use tokio::sync::oneshot;
use xsk_rs::config::{BindFlags, FrameSize, Interface, LibxdpFlags, QueueSize, SocketConfig, UmemConfig};
use xsk_rs::{CompQueue, FillQueue, FrameDesc, RxQueue, Socket, TxQueue, Umem};
use crate::core::ebpf::dns_filter::DnsFilter;
use crate::core::infrastructure::app_config::AppConfig;
use crate::core::ml::engine::Engine;
use crate::core::ml::flow_tracker::FlowTracker;
@ -25,6 +26,36 @@ use crate::model::error::ebpf::EbpfError;
use crate::model::error::system::SystemError;
use crate::model::error::Error;
use crate::model::log::ebpf::EbpfLog;
use crate::utils::packet_parser::parse_packet;
/// Pre-allocated buffer pool to avoid per-packet malloc.
struct BufferPool {
buffers: Vec<Vec<u8>>,
buffer_size: usize,
max_capacity: usize,
}
impl BufferPool {
fn new(capacity: usize, buffer_size: usize) -> Self {
let buffers = (0..capacity)
.map(|_| Vec::with_capacity(buffer_size))
.collect();
Self { buffers, buffer_size, max_capacity: capacity * 2 }
}
fn get(&mut self) -> Vec<u8> {
self.buffers
.pop()
.unwrap_or_else(|| Vec::with_capacity(self.buffer_size))
}
fn put(&mut self, mut buf: Vec<u8>) {
buf.clear();
if self.buffers.len() < self.max_capacity {
self.buffers.push(buf);
}
}
}
pub struct XskManager {
app_config: Arc<AppConfig>,
@ -49,7 +80,7 @@ impl XskManager {
})
}
pub fn run(&self, ml_engine: Option<Arc<Engine>>, shutdowns: &SegQueue<oneshot::Sender<()>>) -> Result<(), Error> {
pub fn run(&self, ml_engine: Option<Arc<Engine>>, dns_filter: Option<Arc<DnsFilter>>, shutdowns: &SegQueue<oneshot::Sender<()>>) -> Result<(), Error> {
let network = self.app_config.network.clone();
let combined_queue_count = network.combined_queue_count;
@ -66,6 +97,7 @@ impl XskManager {
&network.egress_ifname,
Direction::Ingress,
tracker.clone(),
dns_filter.clone(),
)?;
let egress_xsk = XskPair::new(
@ -75,6 +107,7 @@ impl XskManager {
&network.ingress_ifname,
Direction::Egress,
tracker,
None,
)?;
let mut xsk_map = self.xsk_map.lock();
@ -113,8 +146,11 @@ pub struct XskPair {
comp_queue: CompQueue,
tx: TxQueue,
rx: RxQueue,
frame_pool: Arc<Mutex<Vec<FrameDesc>>>,
frame_pool: Vec<FrameDesc>,
tracker: Option<Arc<Mutex<FlowTracker>>>,
dns_filter: Option<Arc<DnsFilter>>,
packet_buffer_size: usize,
buffer_pool_capacity: usize,
}
impl XskPair {
@ -125,8 +161,9 @@ impl XskPair {
_tx_ifname: &str,
direction: Direction,
tracker: Option<Arc<Mutex<FlowTracker>>>,
dns_filter: Option<Arc<DnsFilter>>,
) -> Result<Self, Error> {
let rx_ifname_c = CString::new(rx_ifname).map_err(|_| SystemError::UnknownError)?;
let rx_ifname_c = CString::new(rx_ifname).map_err(|_| SystemError::InvalidConfig)?;
let fill_queue_size = QueueSize::new(config.fill_queue_size).map_err(|_| SystemError::InvalidConfig)?;
let comp_queue_size = QueueSize::new(config.comp_queue_size).map_err(|_| SystemError::InvalidConfig)?;
@ -154,7 +191,6 @@ impl XskPair {
let interface = Interface::new(rx_ifname_c);
// SAFETY: Interface and umem are valid and outlive the socket
let (tx, rx, queue) =
unsafe { Socket::new(socket_config, &umem, &interface, queue_id).map_err(EbpfError::SocketSetFailed)? };
@ -165,7 +201,6 @@ impl XskPair {
let fill_frames: Vec<FrameDesc> = frame_descs.iter().take(fill_frames_count).copied().collect();
// SAFETY: Frame descriptors are valid and owned by this UMEM
let submitted = unsafe { fill_queue.produce(&fill_frames) };
if submitted != fill_frames.len() {
return Err(EbpfError::FillQueueInitFailed.into());
@ -180,8 +215,11 @@ impl XskPair {
comp_queue,
tx,
rx,
frame_pool: Arc::new(Mutex::new(pool_frames)),
frame_pool: pool_frames,
tracker,
dns_filter,
packet_buffer_size: config.packet_buffer_size,
buffer_pool_capacity: config.buffer_pool_capacity,
};
Ok(xsk_pair)
@ -201,11 +239,11 @@ impl XskPair {
.spawn(move || {
let mut shutdown_rx = Some(shutdown_rx);
let mut idle_count: u32 = 0;
let mut buffer_pool = BufferPool::new(self.buffer_pool_capacity, self.packet_buffer_size);
let mut comp_descs = vec![FrameDesc::default(); 256];
let mut rx_descs = vec![FrameDesc::default(); 64];
loop {
// Non-blocking shutdown check: try_recv avoids blocking the hot loop.
// The idle backoff below (sleep_us) ensures we don't busy-spin when idle,
// which also bounds how quickly we detect shutdown to at most 100us.
if let Some(ref mut rx) = shutdown_rx {
match rx.try_recv() {
Ok(_) | Err(oneshot::error::TryRecvError::Closed) => {
@ -217,17 +255,17 @@ impl XskPair {
let mut total_activity = 0;
match self.process_comp_queue() {
match self.process_comp_queue(&mut comp_descs) {
Ok(count) => total_activity += count,
Err(e) => log!(EbpfLog::CompQueueError(format!("{:?}", e))),
}
match self.process_rx_queue(&forward_tx) {
match self.process_rx_queue(&forward_tx, &mut buffer_pool, &mut rx_descs) {
Ok(count) => total_activity += count,
Err(e) => log!(EbpfLog::RXQueueError(format!("{:?}", e))),
}
match self.process_tx_queue(&forward_rx) {
match self.process_tx_queue(&forward_rx, &mut buffer_pool, &mut comp_descs) {
Ok(count) => total_activity += count,
Err(e) => log!(EbpfLog::TXQueueError(format!("{:?}", e))),
}
@ -256,51 +294,65 @@ impl XskPair {
})
}
fn process_comp_queue(&mut self) -> Result<usize, EbpfError> {
let mut comp_descs = vec![FrameDesc::default(); 256];
let nb_completed = unsafe { self.comp_queue.consume(&mut comp_descs) };
fn process_comp_queue(&mut self, comp_descs: &mut [FrameDesc]) -> Result<usize, EbpfError> {
let nb_completed = unsafe { self.comp_queue.consume(comp_descs) };
if nb_completed > 0 {
let mut pool = self.frame_pool.lock();
for desc in comp_descs.iter().take(nb_completed) {
pool.push(*desc);
self.frame_pool.push(*desc);
}
}
Ok(nb_completed)
}
fn process_rx_queue(&mut self, forward_tx: &Sender<Vec<u8>>) -> Result<usize, EbpfError> {
let mut rx_descs = vec![FrameDesc::default(); 64];
// SAFETY: rx_descs buffer is large enough for consume
let rx_count = unsafe { self.rx.consume(&mut rx_descs) };
fn process_rx_queue(&mut self, forward_tx: &Sender<Vec<u8>>, buffer_pool: &mut BufferPool, rx_descs: &mut [FrameDesc]) -> Result<usize, EbpfError> {
let rx_count = unsafe { self.rx.consume(rx_descs) };
if rx_count > 0 {
let is_ingress = self.direction == Direction::Ingress;
for rx_desc in rx_descs.iter().take(rx_count) {
let lengths = rx_desc.lengths();
let packet_len = lengths.data() as usize;
// SAFETY: rx_desc is valid and belongs to this UMEM
let data = unsafe { self.umem.data(rx_desc) };
let contents = data.contents();
if packet_len > contents.len() {
log!(EbpfLog::InvalidPacketLength);
continue;
}
let packet_data = contents[..packet_len].to_vec();
if let Some(ref tracker) = self.tracker {
Engine::process_packet(tracker, &packet_data, self.direction == Direction::Ingress);
let raw = &contents[..packet_len];
// DNS blacklist check — drop blacklisted DNS queries before forwarding
if let Some(ref dns) = self.dns_filter {
if let Some((dns_name, name_len)) = DnsFilter::parse_query_name(raw) {
if dns.is_blacklisted(&dns_name, name_len) {
continue;
}
}
}
if let Err(e) = forward_tx.try_send(packet_data) {
// Parse directly from UMEM (zero-copy for ML path).
// Only clone for the forwarding path afterwards.
if let Some(ref tracker) = self.tracker {
if let Some((packet_info, _)) = parse_packet(raw) {
tracker.lock().process_packet(packet_info, is_ingress);
}
}
// Clone into pooled buffer for forwarding
let mut buf = buffer_pool.get();
buf.extend_from_slice(raw);
if let Err(e) = forward_tx.try_send(buf) {
match e {
crossbeam::channel::TrySendError::Full(_) => {
crossbeam::channel::TrySendError::Full(returned) => {
buffer_pool.put(returned);
log!(EbpfLog::ForwardChannelFull);
}
crossbeam::channel::TrySendError::Disconnected(_) => {
crossbeam::channel::TrySendError::Disconnected(returned) => {
buffer_pool.put(returned);
log!(EbpfLog::ForwardChannelDisconnected);
}
}
@ -318,7 +370,7 @@ impl XskPair {
Ok(rx_count)
}
fn process_tx_queue(&mut self, forward_rx: &Receiver<Vec<u8>>) -> Result<usize, EbpfError> {
fn process_tx_queue(&mut self, forward_rx: &Receiver<Vec<u8>>, buffer_pool: &mut BufferPool, comp_descs: &mut [FrameDesc]) -> Result<usize, EbpfError> {
let mut packets_to_send = Vec::with_capacity(64);
while let Ok(packet) = forward_rx.try_recv() {
packets_to_send.push(packet);
@ -331,37 +383,32 @@ impl XskPair {
return Ok(0);
}
if let Err(e) = self.process_comp_queue() {
if let Err(e) = self.process_comp_queue(comp_descs) {
log!(EbpfLog::CompQueueError(format!("{:?}", e)));
}
let pool_size = {
let pool = self.frame_pool.lock();
pool.len()
};
let total_packets = packets_to_send.len();
if pool_size == 0 {
log!(EbpfLog::FramePoolExhausted(packets_to_send.len()));
if self.frame_pool.is_empty() {
for pkt in packets_to_send {
buffer_pool.put(pkt);
}
log!(EbpfLog::FramePoolExhausted(total_packets));
return Ok(0);
}
let mut frames = Vec::with_capacity(packets_to_send.len());
{
let mut pool = self.frame_pool.lock();
let available = pool.len().min(packets_to_send.len());
for _ in 0..available {
if let Some(frame) = pool.pop() {
frames.push(frame);
}
}
}
let available = self.frame_pool.len().min(total_packets);
let mut frames: Vec<FrameDesc> = self.frame_pool.drain(self.frame_pool.len() - available..).collect();
if frames.is_empty() {
for pkt in packets_to_send {
buffer_pool.put(pkt);
}
log!(EbpfLog::NoFramesAvailable);
return Ok(0);
}
let sent_count = frames.len();
for (frame, packet) in frames.iter_mut().zip(packets_to_send.iter()) {
unsafe {
self.umem
@ -372,15 +419,32 @@ impl XskPair {
}
}
// SAFETY: Frames contain valid packet data written above
let nb_submitted = unsafe { self.tx.produce(&frames) };
// Return unsubmitted frames to pool to prevent frame leak
if nb_submitted < frames.len() {
for frame in frames[nb_submitted..].iter() {
self.frame_pool.push(*frame);
}
}
if let Err(e) = self.tx.wakeup() {
if e.kind() != std::io::ErrorKind::WouldBlock {
log!(EbpfLog::TXWakeupFailed(e.to_string()));
}
}
// Log dropped packets when frames < packets
let dropped = total_packets - sent_count;
if dropped > 0 {
log!(EbpfLog::FramePoolExhausted(dropped));
}
// Return all buffers to pool
for pkt in packets_to_send {
buffer_pool.put(pkt);
}
Ok(nb_submitted)
}
}

1
net-guardia/src/core/infrastructure/app_config.rs
View File

@ -10,7 +10,6 @@ pub struct AppConfig {
pub http: HttpConfig,
pub network: NetworkConfig,
pub inference: InfConfig,
#[allow(dead_code)]
pub misc: MiscConfig,
pub pipeline: PipelineConfig,
}

1
net-guardia/src/core/infrastructure/geoip.rs
View File

@ -10,7 +10,6 @@ use tokio::task;
use crate::utils::ip_address;
// TODO: Wire into statistics endpoint when GeoIP enrichment is enabled
#[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
#[allow(dead_code)]
pub struct GeoLocation {

22
net-guardia/src/core/infrastructure/health.rs
View File

@ -1,4 +1,3 @@
// net-guardia/src/core/ebpf/health.rs
use std::sync::Arc;
use std::time::Duration;
@ -29,10 +28,8 @@ pub struct SystemHealth {
broadcast_tx: broadcast::Sender<SystemHealthMetrics>,
ingress_interface: String,
egress_interface: String,
// management_interface: String,
}
impl SystemHealth {
pub fn new(config: Arc<AppConfig>) -> Result<Self, Error> {
let (broadcast_tx, _) = broadcast::channel(100);
@ -44,7 +41,6 @@ impl SystemHealth {
broadcast_tx,
ingress_interface: config.network.ingress_ifname.clone(),
egress_interface: config.network.egress_ifname.clone(),
// management_interface: config.management_ifindex.clone(),
};
Ok(health)
@ -88,7 +84,6 @@ impl SystemHealth {
&components,
&self.ingress_interface,
&self.egress_interface,
// &self.management_interface,
);
drop(system);
@ -108,7 +103,6 @@ impl SystemHealth {
components: &Components,
ingress_interface: &str,
egress_interface: &str,
// management_interface: &str,
) -> SystemHealthMetrics {
let timestamp = std::time::SystemTime::now()
.duration_since(std::time::UNIX_EPOCH)
@ -134,7 +128,6 @@ impl SystemHealth {
networks,
ingress_interface,
egress_interface,
// management_interface,
);
let load_average = System::load_average();
@ -218,7 +211,6 @@ impl SystemHealth {
networks: &Networks,
ingress_interface: &str,
egress_interface: &str,
// management_interface: &str,
) -> ConfiguredNetworkStats {
let create_network_stats = |interface_name: &str| -> Option<NetworkStats> {
networks.get(interface_name).map(|network| NetworkStats {
@ -234,7 +226,6 @@ impl SystemHealth {
let ingress = create_network_stats(ingress_interface);
let egress = create_network_stats(egress_interface);
// let management = create_network_stats(management_interface);
if ingress.is_none() {
log!(Health::InterfaceNotFound("Ingress".to_string(), ingress_interface.to_string()));
@ -242,20 +233,13 @@ impl SystemHealth {
if egress.is_none() {
log!(Health::InterfaceNotFound("Egress".to_string(), egress_interface.to_string()));
}
// if management.is_none() {
// warn!("Management interface '{}' not found", management_interface);
// }
ConfiguredNetworkStats {
ingress,
egress,
// management,
}
}
pub async fn get_current_metrics(&self) -> SystemHealthMetrics {
// Read last cached metrics from background task, don't refresh here
// to avoid racing with the background refresh_and_broadcast task
let system = self.system.read().await;
let networks = self.networks.read().await;
let components = self.components.read().await;
@ -266,7 +250,6 @@ impl SystemHealth {
&components,
&self.ingress_interface,
&self.egress_interface,
// &self.management_interface,
)
}
@ -328,11 +311,6 @@ impl SystemHealth {
status.overall_healthy = false;
status.issues.push("Egress interface not available".to_string());
}
// if metrics.network_stats.management.is_none() {
// status
// .warnings
// .push("Management interface not available".to_string());
// }
status
}

5
net-guardia/src/core/infrastructure/statistics.rs
View File

@ -2,7 +2,6 @@ use std::sync::Arc;
use std::time;
use crate::core::ml::engine::Engine;
use crate::model::direction::Direction;
use crate::model::flow_stats::{FlowStatsEntry, FlowSubscription, StatsSummary};
pub struct FlowStatistics {
@ -31,23 +30,19 @@ impl FlowStatistics {
let mut flows = self.get_all_flows();
// Filter by direction
if let Some(dir) = &sub.direction {
flows.retain(|f| &f.direction == dir);
}
// Filter by time window
if let Some(window_secs) = sub.window_secs {
let cutoff = now_us.saturating_sub(window_secs * 1_000_000);
flows.retain(|f| f.last_seen_us >= cutoff);
}
// Sort by total bytes descending
flows.sort_by(|a, b| {
(b.fwd_bytes + b.bwd_bytes).cmp(&(a.fwd_bytes + a.bwd_bytes))
});
// Limit
if let Some(n) = sub.top_n {
flows.truncate(n.min(10000));
}

8
net-guardia/src/core/ml/alert.rs
View File

@ -1,7 +1,8 @@
use macros::log;
use serde::Serialize;
use tokio::sync::broadcast;
use tracing::error;
use crate::model::log::ml::MLLog;
use crate::model::ml_detection::DetectionResult;
const ALERT_CHANNEL_CAPACITY: usize = 100;
@ -65,15 +66,14 @@ impl MLAlert {
if self.broadcast_tx.receiver_count() > 0 {
let alert = AlertMessage::from_detection_result(result);
if let Err(e) = self.broadcast_tx.send(alert) {
error!("Failed to broadcast ML alert: {}", e);
log!(MLLog::BroadcastAlertFailed(e.to_string()));
}
}
}
}
impl Default for MLAlert {
fn default() -> Self {
Self::new()
}
}
}

14
net-guardia/src/core/ml/config_loader.rs
View File

@ -23,17 +23,17 @@ impl InferenceConfig {
pub fn load_file(file: &str) -> Result<Self, MLError> {
let path = PathBuf::from("models").join(file);
let content = fs::read_to_string(&path)
.map_err(|_| MLError::ConfigLoadFailed { path: path.to_path_buf() })?;
.map_err(|_| MLError::ConfigLoadFailed(path.to_path_buf()))?;
let config: InferenceConfig = serde_json::from_str(&content)
.map_err(|e| MLError::ConfigParseFailed { reason: e.to_string() })?;
.map_err(|e| MLError::ConfigParseFailed(e.to_string()))?;
if config.ae_feature_names.is_empty() {
return Err(MLError::ConfigParseFailed { reason: "ae_feature_names is empty".into() });
return Err(MLError::ConfigParseFailed("ae_feature_names is empty"));
}
if config.ae_scaler_mean.len() != config.ae_feature_names.len() {
return Err(MLError::ConfigParseFailed { reason: "scaler mean length mismatch".into() });
return Err(MLError::ConfigParseFailed("scaler mean length mismatch"));
}
if config.ae_scaler_std.len() != config.ae_feature_names.len() {
return Err(MLError::ConfigParseFailed { reason: "scaler std length mismatch".into() });
return Err(MLError::ConfigParseFailed("scaler std length mismatch"));
}
Ok(config)
}
@ -50,8 +50,4 @@ impl InferenceConfig {
self.attack_labels.len()
}
#[allow(dead_code)]
pub fn get_attack_label(&self, id: usize) -> Option<&String> {
self.attack_labels.get(&id.to_string())
}
}

52
net-guardia/src/core/ml/engine.rs
View File

@ -17,10 +17,9 @@ use super::traffic_logger::TrafficLogger;
use super::alert::MLAlert;
use crate::model::log::ml::MLLog;
use crate::model::ml_detection::{EngineConfig, InferenceStats};
use crate::utils::packet_parser::parse_packet;
/// Per-thread tracker. Mutex is only contested during inference tick (every N seconds).
/// Hot path (process_packet): lock is uncontended → ~15ns.
/// Per-queue tracker. With symmetric hash in eBPF, both directions of a flow
/// land on the same queue, so per-queue trackers correctly see bidirectional flows.
pub type ThreadTracker = Arc<Mutex<FlowTracker>>;
pub struct Engine {
@ -28,7 +27,6 @@ pub struct Engine {
inference_pipeline: Arc<Inference>,
aggregator: Mutex<AttackAggregator>,
ml_alert: Arc<MLAlert>,
max_flows_per_thread: usize,
min_packets: usize,
batch_size: usize,
inference_interval_secs: u64,
@ -50,8 +48,7 @@ impl Engine {
let min_detections = ((engine_config.aggregator_window_secs / engine_config.inference_interval_secs) / 2).max(1) as usize;
let aggregator = Mutex::new(AttackAggregator::new(engine_config.aggregator_window_secs, min_detections));
let max_flows_per_thread = engine_config.max_flows / num_threads.max(1) as usize;
let max_flows_per_thread = engine_config.max_flows / (num_threads as usize).max(1);
let trackers: Vec<ThreadTracker> = (0..num_threads)
.map(|_| Arc::new(Mutex::new(FlowTracker::new(max_flows_per_thread))))
.collect();
@ -61,7 +58,6 @@ impl Engine {
inference_pipeline,
aggregator,
ml_alert,
max_flows_per_thread,
min_packets: engine_config.min_packets,
batch_size: engine_config.batch_size,
inference_interval_secs: engine_config.inference_interval_secs,
@ -70,14 +66,23 @@ impl Engine {
}
}
/// xsk_manager calls this per queue_id; with symmetric hash each queue has its own tracker.
pub fn tracker(&self, queue_id: u32) -> &ThreadTracker {
&self.trackers[queue_id as usize]
&self.trackers[queue_id as usize % self.trackers.len()]
}
pub fn trackers(&self) -> &[ThreadTracker] {
&self.trackers
}
pub fn inference_interval_secs(&self) -> u64 {
self.inference_interval_secs
}
pub fn has_traffic_logger(&self) -> bool {
self.traffic_logger.is_some()
}
pub async fn run(self: Arc<Self>) -> oneshot::Sender<()> {
let (shutdown_tx, shutdown_rx) = oneshot::channel();
tokio::spawn(async move {
@ -100,18 +105,23 @@ impl Engine {
}
fn run_inference_tick(&self) {
// Collect flows from all per-thread trackers.
// Each lock is held only for the duration of get_flows_for_inference (~microseconds).
// XSK threads are barely impacted since they process on different trackers.
let mut all_flows = Vec::new();
let mut all_snapshots = Vec::new();
let mut total_count = 0;
// Phase 1: O(1) lock per tracker — just swap
for tracker in &self.trackers {
let t = tracker.lock();
let mut t = tracker.lock();
total_count += t.flow_count();
all_flows.extend(t.get_flows_for_inference(self.min_packets));
all_snapshots.push(t.take_snapshot());
// lock released here
}
// Phase 2: filter outside all locks — O(flows) but non-blocking
let all_flows: Vec<FlowData> = all_snapshots.into_iter()
.flat_map(|map| map.into_values())
.filter(|flow| flow.packet_count() >= self.min_packets)
.collect();
log!(MLLog::FlowStats(
total_count,
all_flows.len(),
@ -128,10 +138,6 @@ impl Engine {
} else {
self.run_inference(&all_flows);
}
for tracker in &self.trackers {
tracker.lock().cleanup_old_flows(self.flow_timeout_us);
}
}
fn log_traffic(&self, flows: &[FlowData], logger: &TrafficLogger) {
@ -190,14 +196,4 @@ impl Engine {
}
}
/// Called by XSK threads. Lock is per-thread, uncontended on hot path.
pub fn process_packet(tracker: &Mutex<FlowTracker>, packet_data: &[u8], is_ingress: bool) {
match parse_packet(packet_data) {
Some((packet_info, payload_start)) => {
let payload = packet_data.get(payload_start..).unwrap_or(&[]);
tracker.lock().process_packet(packet_info, is_ingress, payload);
}
None => log!(MLLog::ParsePacketFailed(packet_data.len())),
}
}
}

521
net-guardia/src/core/ml/feature_extractor.rs
View File

@ -13,185 +13,18 @@ pub struct FlowFeatures {
impl FlowFeatures {
pub fn extract(flow: &FlowData, feature_names: &[String]) -> Self {
let precomputed = PrecomputedStats::compute(flow);
let feature_num = feature_names.len();
let mut features = Vec::with_capacity(feature_num);
for name in feature_names {
let value = Self::get_feature_by_name(flow, name.trim());
let value = precomputed.get(name.trim());
features.push(value);
}
Self { features, feature_num }
}
fn get_feature_by_name(flow: &FlowData, feature_name: &str) -> f64 {
let safe_div = |a: f64, b: f64| if b > 0.0 { a / b } else { 0.0 };
// 1-5
let fwd_count = flow.fwd_packets.len() as f64;
let bwd_count = flow.bwd_packets.len() as f64;
let total_count = fwd_count + bwd_count;
let duration_us = flow.duration_us() as f64;
let duration_s = duration_us / 1_000_000.0;
let duration_s = if duration_s > 0.0 { duration_s } else { 1e-6 };
// 6-9
let fwd_lengths: Vec<f64> = flow.fwd_packets.iter().map(|p| p.length as f64).collect();
let (fwd_max, fwd_min, fwd_mean, fwd_std) = compute_stats(&fwd_lengths);
// 10-13
let bwd_lengths: Vec<f64> = flow.bwd_packets.iter().map(|p| p.length as f64).collect();
let (bwd_max, bwd_min, bwd_mean, bwd_std) = compute_stats(&bwd_lengths);
// 14-15
let total_bytes = (flow.fwd_total_bytes + flow.bwd_total_bytes) as f64;
// 16-19
let flow_iats = compute_flow_iats(&flow.fwd_packets, &flow.bwd_packets);
let (flow_iat_max, flow_iat_min, flow_iat_mean, flow_iat_std) = compute_stats(&flow_iats);
// 20-24
let fwd_iats = compute_iats(&flow.fwd_packets);
let fwd_iat_total: f64 = fwd_iats.iter().sum();
let (fwd_iat_max, fwd_iat_min, fwd_iat_mean, fwd_iat_std) = compute_stats(&fwd_iats);
// 25-29
let bwd_iats = compute_iats(&flow.bwd_packets);
let bwd_iat_total: f64 = bwd_iats.iter().sum();
let (bwd_iat_max, bwd_iat_min, bwd_iat_mean, bwd_iat_std) = compute_stats(&bwd_iats);
// 30-37
let fwd_psh = flow.fwd_packets.iter().filter(|p| p.flags & TCP_PSH != 0).count() as f64;
let bwd_psh = flow.bwd_packets.iter().filter(|p| p.flags & TCP_PSH != 0).count() as f64;
let fwd_urg = flow.fwd_packets.iter().filter(|p| p.flags & TCP_URG != 0).count() as f64;
let bwd_urg = flow.bwd_packets.iter().filter(|p| p.flags & TCP_URG != 0).count() as f64;
// 38-55
let all_lengths: Vec<f64> = flow
.fwd_packets
.iter()
.chain(flow.bwd_packets.iter())
.map(|p| p.length as f64)
.collect();
let (max_len, min_len, mean_len, std_len) = compute_stats(&all_lengths);
// 56-67
let fwd_bulk = &flow.fwd_bulk_state;
let bwd_bulk = &flow.bwd_bulk_state;
// 68-69
let fwd_seg_sizes: Vec<f64> = flow
.fwd_packets
.iter()
.filter(|p| p.payload_length > 0)
.map(|p| p.payload_length as f64)
.collect();
// 70-73
let (active_max, active_min, active_mean, active_std) =
compute_stats(&flow.active_periods.iter().map(|&x| x as f64).collect::<Vec<_>>());
// 74-77
let (idle_max, idle_min, idle_mean, idle_std) =
compute_stats(&flow.idle_periods.iter().map(|&x| x as f64).collect::<Vec<_>>());
match feature_name {
"Destination Port" | "Dst Port" | "dst_port" => flow.flow_key.dst_port as f64,
"Protocol" | "protocol" => flow.flow_key.protocol as f64,
"Flow Duration" | "flow_duration" => duration_us,
"Total Fwd Packets" | "Tot Fwd Pkts" | "fwd_packets" => fwd_count,
"Total Backward Packets" | "Tot Bwd Pkts" | "bwd_packets" => bwd_count,
"Total Length of Fwd Packets" | "TotLen Fwd Pkts" | "fwd_bytes" => flow.fwd_total_bytes as f64,
"Total Length of Bwd Packets" | "TotLen Bwd Pkts" | "bwd_bytes" => flow.bwd_total_bytes as f64,
"Fwd Packet Length Max" => fwd_max,
"Fwd Packet Length Min" => fwd_min,
"Fwd Packet Length Mean" | "Fwd Pkt Len Mean" | "fwd_pkt_len_mean" => fwd_mean,
"Fwd Packet Length Std" | "Fwd Pkt Len Std" | "fwd_pkt_len_std" => fwd_std,
"Bwd Packet Length Max" => bwd_max,
"Bwd Packet Length Min" => bwd_min,
"Bwd Packet Length Mean" | "Bwd Pkt Len Mean" | "bwd_pkt_len_mean" => bwd_mean,
"Bwd Packet Length Std" | "Bwd Pkt Len Std" | "bwd_pkt_len_std" => bwd_std,
"Flow Bytes/s" | "Flow Byts/s" | "flow_bytes_per_sec" => safe_div(total_bytes, duration_s),
"Flow Packets/s" | "Flow Pkts/s" | "flow_pkts_per_sec" => safe_div(total_count, duration_s),
"Flow IAT Mean" | "flow_iat_mean" => flow_iat_mean,
"Flow IAT Std" => flow_iat_std,
"Flow IAT Max" => flow_iat_max,
"Flow IAT Min" => flow_iat_min,
"Fwd IAT Total" => fwd_iat_total,
"Fwd IAT Mean" | "fwd_iat_mean" => fwd_iat_mean,
"Fwd IAT Std" => fwd_iat_std,
"Fwd IAT Max" => fwd_iat_max,
"Fwd IAT Min" => fwd_iat_min,
"Bwd IAT Total" => bwd_iat_total,
"Bwd IAT Mean" | "bwd_iat_mean" => bwd_iat_mean,
"Bwd IAT Std" => bwd_iat_std,
"Bwd IAT Max" => bwd_iat_max,
"Bwd IAT Min" => bwd_iat_min,
"Fwd PSH Flags" => fwd_psh,
"Bwd PSH Flags" => bwd_psh,
"Fwd URG Flags" => fwd_urg,
"Bwd URG Flags" => bwd_urg,
"Fwd Header Length" => flow.fwd_header_bytes as f64,
"Bwd Header Length" => flow.bwd_header_bytes as f64,
"Fwd Packets/s" => safe_div(fwd_count, duration_s),
"Bwd Packets/s" => safe_div(bwd_count, duration_s),
"Min Packet Length" => min_len,
"Max Packet Length" => max_len,
"Packet Length Mean" | "Pkt Len Mean" | "pkt_len_mean" => mean_len,
"Packet Length Std" | "Pkt Len Std" | "pkt_len_std" => std_len,
"Packet Length Variance" => std_len * std_len,
"FIN Flag Count" | "FIN Flag Cnt" | "fin_flag_cnt" => flow.fin_count as f64,
"SYN Flag Count" | "SYN Flag Cnt" | "syn_flag_cnt" => flow.syn_count as f64,
"RST Flag Count" | "RST Flag Cnt" | "rst_flag_cnt" => flow.rst_count as f64,
"PSH Flag Count" | "PSH Flag Cnt" | "psh_flag_cnt" => flow.psh_count as f64,
"ACK Flag Count" | "ACK Flag Cnt" | "ack_flag_cnt" => flow.ack_count as f64,
"URG Flag Count" => flow.urg_count as f64,
"CWE Flag Count" => flow.cwe_count as f64,
"ECE Flag Count" => flow.ece_count as f64,
"Down/Up Ratio" => safe_div(bwd_count, fwd_count),
"Average Packet Size" => safe_div(total_bytes, total_count),
"Avg Fwd Segment Size" => safe_div(flow.fwd_total_bytes as f64, fwd_count),
"Avg Bwd Segment Size" => safe_div(flow.bwd_total_bytes as f64, bwd_count),
"Fwd Header Length.1" => flow.fwd_header_bytes as f64,
"Fwd Avg Bytes/Bulk" => safe_div(fwd_bulk.total_bytes as f64, fwd_bulk.bulk_count as f64),
"Fwd Avg Packets/Bulk" => safe_div(fwd_bulk.total_packets as f64, fwd_bulk.bulk_count as f64),
"Fwd Avg Bulk Rate" => safe_div(
fwd_bulk.total_bytes as f64,
fwd_bulk.total_duration_us as f64 / 1_000_000.0,
),
"Bwd Avg Bytes/Bulk" => safe_div(bwd_bulk.total_bytes as f64, bwd_bulk.bulk_count as f64),
"Bwd Avg Packets/Bulk" => safe_div(bwd_bulk.total_packets as f64, bwd_bulk.bulk_count as f64),
"Bwd Avg Bulk Rate" => safe_div(
bwd_bulk.total_bytes as f64,
bwd_bulk.total_duration_us as f64 / 1_000_000.0,
),
"Subflow Fwd Packets" => fwd_count,
"Subflow Fwd Bytes" => flow.fwd_total_bytes as f64,
"Subflow Bwd Packets" => bwd_count,
"Subflow Bwd Bytes" => flow.bwd_total_bytes as f64,
"Init_Win_bytes_forward" | "Init Fwd Win Byts" | "fwd_win_bytes" => flow.init_win_bytes_fwd as f64,
"Init_Win_bytes_backward" | "Init Bwd Win Byts" | "bwd_win_bytes" => flow.init_win_bytes_bwd as f64,
"act_data_pkt_fwd" | "Fwd Act Data Pkts" | "fwd_act_data_pkts" => fwd_seg_sizes.len() as f64,
"min_seg_size_forward" | "Fwd Seg Size Min" | "fwd_seg_size_min" => fwd_seg_sizes
.iter()
.min_by(|a, b| a.total_cmp(b))
.copied()
.unwrap_or(0.0),
"Active Mean" => active_mean,
"Active Std" => active_std,
"Active Max" => active_max,
"Active Min" => active_min,
"Idle Mean" => idle_mean,
"Idle Std" => idle_std,
"Idle Max" => idle_max,
"Idle Min" => idle_min,
_ => 0.0,
}
}
pub fn normalize(&mut self, means: &[f64], stds: &[f64]) {
for i in 0..self.feature_num {
if stds[i] > 0.0 {
@ -313,6 +146,350 @@ impl FlowFeatures {
}
}
/// All statistics pre-computed once from a FlowData, then looked up by feature name.
struct PrecomputedStats {
// Basic counts and durations
dst_port: f64,
protocol: f64,
duration_us: f64,
fwd_count: f64,
bwd_count: f64,
total_count: f64,
fwd_total_bytes: f64,
bwd_total_bytes: f64,
total_bytes: f64,
duration_s: f64,
// Forward packet length stats
fwd_len_max: f64,
fwd_len_min: f64,
fwd_len_mean: f64,
fwd_len_std: f64,
// Backward packet length stats
bwd_len_max: f64,
bwd_len_min: f64,
bwd_len_mean: f64,
bwd_len_std: f64,
// Combined packet length stats
all_len_max: f64,
all_len_min: f64,
all_len_mean: f64,
all_len_std: f64,
// Flow IAT stats
flow_iat_max: f64,
flow_iat_min: f64,
flow_iat_mean: f64,
flow_iat_std: f64,
// Forward IAT stats
fwd_iat_total: f64,
fwd_iat_max: f64,
fwd_iat_min: f64,
fwd_iat_mean: f64,
fwd_iat_std: f64,
// Backward IAT stats
bwd_iat_total: f64,
bwd_iat_max: f64,
bwd_iat_min: f64,
bwd_iat_mean: f64,
bwd_iat_std: f64,
// Flag counts (per-direction)
fwd_psh: f64,
bwd_psh: f64,
fwd_urg: f64,
bwd_urg: f64,
// Header bytes
fwd_header_bytes: f64,
bwd_header_bytes: f64,
// Flag counts (global)
fin_count: f64,
syn_count: f64,
rst_count: f64,
psh_count: f64,
ack_count: f64,
urg_count: f64,
cwe_count: f64,
ece_count: f64,
// Bulk stats
fwd_avg_bytes_bulk: f64,
fwd_avg_packets_bulk: f64,
fwd_avg_bulk_rate: f64,
bwd_avg_bytes_bulk: f64,
bwd_avg_packets_bulk: f64,
bwd_avg_bulk_rate: f64,
// Window sizes
init_win_bytes_fwd: f64,
init_win_bytes_bwd: f64,
// Active data packets
act_data_pkt_fwd: f64,
// Min forward header (segment) size
min_seg_size_forward: f64,
// Active/idle period stats
active_max: f64,
active_min: f64,
active_mean: f64,
active_std: f64,
idle_max: f64,
idle_min: f64,
idle_mean: f64,
idle_std: f64,
}
impl PrecomputedStats {
fn compute(flow: &FlowData) -> Self {
let safe_div = |a: f64, b: f64| if b > 0.0 { a / b } else { 0.0 };
let fwd_count = flow.fwd_packets.len() as f64;
let bwd_count = flow.bwd_packets.len() as f64;
let total_count = fwd_count + bwd_count;
let duration_us = flow.duration_us() as f64;
let duration_s = {
let s = duration_us / 1_000_000.0;
if s > 0.0 { s } else { 1e-6 }
};
let fwd_total_bytes = flow.fwd_total_bytes as f64;
let bwd_total_bytes = flow.bwd_total_bytes as f64;
let total_bytes = fwd_total_bytes + bwd_total_bytes;
// Packet length stats
let fwd_lengths: Vec<f64> = flow.fwd_packets.iter().map(|p| p.payload_length as f64).collect();
let (fwd_len_max, fwd_len_min, fwd_len_mean, fwd_len_std) = compute_stats(&fwd_lengths);
let bwd_lengths: Vec<f64> = flow.bwd_packets.iter().map(|p| p.payload_length as f64).collect();
let (bwd_len_max, bwd_len_min, bwd_len_mean, bwd_len_std) = compute_stats(&bwd_lengths);
let all_lengths: Vec<f64> = flow
.fwd_packets
.iter()
.chain(flow.bwd_packets.iter())
.map(|p| p.payload_length as f64)
.collect();
let (all_len_max, all_len_min, all_len_mean, all_len_std) = compute_stats(&all_lengths);
// IAT stats
let flow_iats = compute_flow_iats(&flow.fwd_packets, &flow.bwd_packets);
let (flow_iat_max, flow_iat_min, flow_iat_mean, flow_iat_std) = compute_stats(&flow_iats);
let fwd_iats = compute_iats(&flow.fwd_packets);
let fwd_iat_total: f64 = fwd_iats.iter().sum();
let (fwd_iat_max, fwd_iat_min, fwd_iat_mean, fwd_iat_std) = compute_stats(&fwd_iats);
let bwd_iats = compute_iats(&flow.bwd_packets);
let bwd_iat_total: f64 = bwd_iats.iter().sum();
let (bwd_iat_max, bwd_iat_min, bwd_iat_mean, bwd_iat_std) = compute_stats(&bwd_iats);
// Per-direction flag counts
let fwd_psh = flow.fwd_packets.iter().filter(|p| p.flags & TCP_PSH != 0).count() as f64;
let bwd_psh = flow.bwd_packets.iter().filter(|p| p.flags & TCP_PSH != 0).count() as f64;
let fwd_urg = flow.fwd_packets.iter().filter(|p| p.flags & TCP_URG != 0).count() as f64;
let bwd_urg = flow.bwd_packets.iter().filter(|p| p.flags & TCP_URG != 0).count() as f64;
// Bulk stats
let fwd_bulk = &flow.fwd_bulk_state;
let bwd_bulk = &flow.bwd_bulk_state;
let fwd_avg_bytes_bulk = safe_div(fwd_bulk.total_bytes as f64, fwd_bulk.bulk_count as f64);
let fwd_avg_packets_bulk = safe_div(fwd_bulk.total_packets as f64, fwd_bulk.bulk_count as f64);
let fwd_avg_bulk_rate = safe_div(
fwd_bulk.total_bytes as f64,
fwd_bulk.total_duration_us as f64 / 1_000_000.0,
);
let bwd_avg_bytes_bulk = safe_div(bwd_bulk.total_bytes as f64, bwd_bulk.bulk_count as f64);
let bwd_avg_packets_bulk = safe_div(bwd_bulk.total_packets as f64, bwd_bulk.bulk_count as f64);
let bwd_avg_bulk_rate = safe_div(
bwd_bulk.total_bytes as f64,
bwd_bulk.total_duration_us as f64 / 1_000_000.0,
);
// Min forward segment (header) size
let min_seg_size_forward = flow
.fwd_packets
.iter()
.map(|p| p.header_length as f64)
.min_by(|a, b| a.total_cmp(b))
.unwrap_or(0.0);
// Active/idle period stats
let (active_max, active_min, active_mean, active_std) =
compute_stats(&flow.active_periods.iter().map(|&x| x as f64).collect::<Vec<_>>());
let (idle_max, idle_min, idle_mean, idle_std) =
compute_stats(&flow.idle_periods.iter().map(|&x| x as f64).collect::<Vec<_>>());
Self {
dst_port: flow.flow_key.dst_port as f64,
protocol: flow.flow_key.protocol as f64,
duration_us,
fwd_count,
bwd_count,
total_count,
fwd_total_bytes,
bwd_total_bytes,
total_bytes,
duration_s,
fwd_len_max,
fwd_len_min,
fwd_len_mean,
fwd_len_std,
bwd_len_max,
bwd_len_min,
bwd_len_mean,
bwd_len_std,
all_len_max,
all_len_min,
all_len_mean,
all_len_std,
flow_iat_max,
flow_iat_min,
flow_iat_mean,
flow_iat_std,
fwd_iat_total,
fwd_iat_max,
fwd_iat_min,
fwd_iat_mean,
fwd_iat_std,
bwd_iat_total,
bwd_iat_max,
bwd_iat_min,
bwd_iat_mean,
bwd_iat_std,
fwd_psh,
bwd_psh,
fwd_urg,
bwd_urg,
fwd_header_bytes: flow.fwd_header_bytes as f64,
bwd_header_bytes: flow.bwd_header_bytes as f64,
fin_count: flow.fin_count as f64,
syn_count: flow.syn_count as f64,
rst_count: flow.rst_count as f64,
psh_count: flow.psh_count as f64,
ack_count: flow.ack_count as f64,
urg_count: flow.urg_count as f64,
cwe_count: flow.cwe_count as f64,
ece_count: flow.ece_count as f64,
fwd_avg_bytes_bulk,
fwd_avg_packets_bulk,
fwd_avg_bulk_rate,
bwd_avg_bytes_bulk,
bwd_avg_packets_bulk,
bwd_avg_bulk_rate,
init_win_bytes_fwd: flow.init_win_bytes_fwd as f64,
init_win_bytes_bwd: flow.init_win_bytes_bwd as f64,
act_data_pkt_fwd: flow.act_data_pkt_fwd as f64,
min_seg_size_forward,
active_max,
active_min,
active_mean,
active_std,
idle_max,
idle_min,
idle_mean,
idle_std,
}
}
fn get(&self, feature_name: &str) -> f64 {
let safe_div = |a: f64, b: f64| if b > 0.0 { a / b } else { 0.0 };
match feature_name {
"Destination Port" | "Dst Port" | "dst_port" => self.dst_port,
"Protocol" | "protocol" => self.protocol,
"Flow Duration" | "flow_duration" => self.duration_us,
"Total Fwd Packets" | "Tot Fwd Pkts" | "fwd_packets" => self.fwd_count,
"Total Backward Packets" | "Tot Bwd Pkts" | "bwd_packets" => self.bwd_count,
"Total Length of Fwd Packets" | "TotLen Fwd Pkts" | "fwd_bytes" => self.fwd_total_bytes,
"Total Length of Bwd Packets" | "TotLen Bwd Pkts" | "bwd_bytes" => self.bwd_total_bytes,
"Fwd Packet Length Max" => self.fwd_len_max,
"Fwd Packet Length Min" => self.fwd_len_min,
"Fwd Packet Length Mean" | "Fwd Pkt Len Mean" | "fwd_pkt_len_mean" => self.fwd_len_mean,
"Fwd Packet Length Std" | "Fwd Pkt Len Std" | "fwd_pkt_len_std" => self.fwd_len_std,
"Bwd Packet Length Max" => self.bwd_len_max,
"Bwd Packet Length Min" => self.bwd_len_min,
"Bwd Packet Length Mean" | "Bwd Pkt Len Mean" | "bwd_pkt_len_mean" => self.bwd_len_mean,
"Bwd Packet Length Std" | "Bwd Pkt Len Std" | "bwd_pkt_len_std" => self.bwd_len_std,
"Flow Bytes/s" | "Flow Byts/s" | "flow_bytes_per_sec" => safe_div(self.total_bytes, self.duration_s),
"Flow Packets/s" | "Flow Pkts/s" | "flow_pkts_per_sec" => safe_div(self.total_count, self.duration_s),
"Flow IAT Mean" | "flow_iat_mean" => self.flow_iat_mean,
"Flow IAT Std" => self.flow_iat_std,
"Flow IAT Max" => self.flow_iat_max,
"Flow IAT Min" => self.flow_iat_min,
"Fwd IAT Total" => self.fwd_iat_total,
"Fwd IAT Mean" | "fwd_iat_mean" => self.fwd_iat_mean,
"Fwd IAT Std" => self.fwd_iat_std,
"Fwd IAT Max" => self.fwd_iat_max,
"Fwd IAT Min" => self.fwd_iat_min,
"Bwd IAT Total" => self.bwd_iat_total,
"Bwd IAT Mean" | "bwd_iat_mean" => self.bwd_iat_mean,
"Bwd IAT Std" => self.bwd_iat_std,
"Bwd IAT Max" => self.bwd_iat_max,
"Bwd IAT Min" => self.bwd_iat_min,
"Fwd PSH Flags" => self.fwd_psh,
"Bwd PSH Flags" => self.bwd_psh,
"Fwd URG Flags" => self.fwd_urg,
"Bwd URG Flags" => self.bwd_urg,
"Fwd Header Length" => self.fwd_header_bytes,
"Bwd Header Length" => self.bwd_header_bytes,
"Fwd Packets/s" => safe_div(self.fwd_count, self.duration_s),
"Bwd Packets/s" => safe_div(self.bwd_count, self.duration_s),
"Min Packet Length" => self.all_len_min,
"Max Packet Length" => self.all_len_max,
"Packet Length Mean" | "Pkt Len Mean" | "pkt_len_mean" => self.all_len_mean,
"Packet Length Std" | "Pkt Len Std" | "pkt_len_std" => self.all_len_std,
"Packet Length Variance" => self.all_len_std * self.all_len_std,
"FIN Flag Count" | "FIN Flag Cnt" | "fin_flag_cnt" => self.fin_count,
"SYN Flag Count" | "SYN Flag Cnt" | "syn_flag_cnt" => self.syn_count,
"RST Flag Count" | "RST Flag Cnt" | "rst_flag_cnt" => self.rst_count,
"PSH Flag Count" | "PSH Flag Cnt" | "psh_flag_cnt" => self.psh_count,
"ACK Flag Count" | "ACK Flag Cnt" | "ack_flag_cnt" => self.ack_count,
"URG Flag Count" => self.urg_count,
"CWE Flag Count" => self.cwe_count,
"ECE Flag Count" => self.ece_count,
"Down/Up Ratio" => safe_div(self.bwd_count, self.fwd_count),
"Average Packet Size" => safe_div(self.total_bytes, self.total_count),
"Avg Fwd Segment Size" => safe_div(self.fwd_total_bytes, self.fwd_count),
"Avg Bwd Segment Size" => safe_div(self.bwd_total_bytes, self.bwd_count),
"Fwd Header Length.1" => self.fwd_header_bytes,
"Fwd Avg Bytes/Bulk" => self.fwd_avg_bytes_bulk,
"Fwd Avg Packets/Bulk" => self.fwd_avg_packets_bulk,
"Fwd Avg Bulk Rate" => self.fwd_avg_bulk_rate,
"Bwd Avg Bytes/Bulk" => self.bwd_avg_bytes_bulk,
"Bwd Avg Packets/Bulk" => self.bwd_avg_packets_bulk,
"Bwd Avg Bulk Rate" => self.bwd_avg_bulk_rate,
"Subflow Fwd Packets" => self.fwd_count,
"Subflow Fwd Bytes" => self.fwd_total_bytes,
"Subflow Bwd Packets" => self.bwd_count,
"Subflow Bwd Bytes" => self.bwd_total_bytes,
"Init_Win_bytes_forward" | "Init Fwd Win Byts" | "fwd_win_bytes" => self.init_win_bytes_fwd,
"Init_Win_bytes_backward" | "Init Bwd Win Byts" | "bwd_win_bytes" => self.init_win_bytes_bwd,
"act_data_pkt_fwd" | "Fwd Act Data Pkts" | "fwd_act_data_pkts" => self.act_data_pkt_fwd,
"min_seg_size_forward" | "Fwd Seg Size Min" | "fwd_seg_size_min" => self.min_seg_size_forward,
"Active Mean" => self.active_mean,
"Active Std" => self.active_std,
"Active Max" => self.active_max,
"Active Min" => self.active_min,
"Idle Mean" => self.idle_mean,
"Idle Std" => self.idle_std,
"Idle Max" => self.idle_max,
"Idle Min" => self.idle_min,
_ => 0.0,
}
}
}
fn compute_stats(values: &[f64]) -> (f64, f64, f64, f64) {
if values.is_empty() {
return (0.0, 0.0, 0.0, 0.0);
@ -325,7 +502,11 @@ fn compute_stats(values: &[f64]) -> (f64, f64, f64, f64) {
let max = values.iter().cloned().fold(f64::NEG_INFINITY, f64::max);
let min = values.iter().cloned().fold(f64::INFINITY, f64::min);
let variance: f64 = values.iter().map(|&x| (x - mean).powi(2)).sum::<f64>() / n;
let variance: f64 = if n > 1.0 {
values.iter().map(|&x| (x - mean).powi(2)).sum::<f64>() / (n - 1.0)
} else {
0.0
};
let std = variance.sqrt();
(max, min, mean, std)

136
net-guardia/src/core/ml/flow_tracker.rs
View File

@ -1,6 +1,4 @@
use std::collections::HashMap;
use std::time;
use common::define::tcp_flags::*;
use crate::model::direction::Direction;
@ -34,6 +32,8 @@ pub struct FlowData {
pub last_packet_time: u64,
pub fwd_bulk_state: BulkState,
pub bwd_bulk_state: BulkState,
pub act_data_pkt_fwd: u32,
is_first_packet: bool,
}
impl FlowData {
@ -64,6 +64,8 @@ impl FlowData {
last_packet_time: first_packet.timestamp_us,
fwd_bulk_state: BulkState::default(),
bwd_bulk_state: BulkState::default(),
act_data_pkt_fwd: 0,
is_first_packet: true,
}
}
@ -100,11 +102,17 @@ impl FlowData {
self.last_packet_time = packet.timestamp_us;
self.last_time_us = packet.timestamp_us;
if self.is_first_packet {
self.is_first_packet = false;
} else if packet.is_forward && packet.payload_length > 0 {
self.act_data_pkt_fwd += 1;
}
if packet.is_forward {
if self.fwd_packets.len() < MAX_PACKETS_PER_DIRECTION {
self.fwd_packets.push(packet_data.clone());
}
self.fwd_total_bytes += packet.packet_length as u64;
self.fwd_total_bytes += packet.payload_length as u64;
self.fwd_header_bytes += packet.header_length as u64;
if self.init_win_bytes_fwd == 0 { self.init_win_bytes_fwd = packet.tcp_window_size; }
Self::update_bulk_state(&mut self.fwd_bulk_state, &packet_data);
@ -112,7 +120,7 @@ impl FlowData {
if self.bwd_packets.len() < MAX_PACKETS_PER_DIRECTION {
self.bwd_packets.push(packet_data.clone());
}
self.bwd_total_bytes += packet.packet_length as u64;
self.bwd_total_bytes += packet.payload_length as u64;
self.bwd_header_bytes += packet.header_length as u64;
if self.init_win_bytes_bwd == 0 { self.init_win_bytes_bwd = packet.tcp_window_size; }
Self::update_bulk_state(&mut self.bwd_bulk_state, &packet_data);
@ -167,127 +175,87 @@ impl FlowData {
/// Per-thread flow tracker. No locks — each XSK thread owns one.
/// RSS guarantees the same flow always goes to the same thread.
pub struct FlowTracker {
flows: HashMap<FlowKey, FlowData>,
active: HashMap<FlowKey, FlowData>,
max_flows: usize,
}
impl FlowTracker {
pub fn new(max_flows: usize) -> Self {
Self {
flows: HashMap::new(),
active: HashMap::new(),
max_flows,
}
}
pub fn process_packet(&mut self, mut packet: UserPacket, is_ingress: bool, payload: &[u8]) {
let direction = if is_ingress { Direction::Ingress } else { Direction::Egress };
/// Swap active flows with an empty map and return the old one.
/// This is O(1) — the caller filters outside the lock.
pub fn take_snapshot(&mut self) -> HashMap<FlowKey, FlowData> {
let mut snapshot = HashMap::with_capacity(self.active.capacity());
std::mem::swap(&mut self.active, &mut snapshot);
snapshot
}
pub fn process_packet(&mut self, mut packet: UserPacket, is_ingress: bool) {
let packet_key = FlowKey::from_packet(&packet);
let proto = packet_key.protocol;
let src_port = packet_key.src_port;
let dst_port = packet_key.dst_port;
let reversed_key = packet_key.clone().reverse();
let (actual_key, is_forward) = if self.flows.contains_key(&packet_key) {
// Try to match an existing flow first (canonical key already established).
let (actual_key, is_forward) = if self.active.contains_key(&packet_key) {
(packet_key, true)
} else if self.flows.contains_key(&reversed_key) {
} else if self.active.contains_key(&reversed_key) {
(reversed_key, false)
} else {
let has_syn = packet.tcp_flags & TCP_SYN != 0;
let has_ack = packet.tcp_flags & TCP_ACK != 0;
if has_syn && has_ack {
// New flow: determine initiator using TCP flags, fall back to is_ingress.
let syn = packet.tcp_flags & TCP_SYN != 0;
let ack = packet.tcp_flags & TCP_ACK != 0;
if syn && ack {
// SYN+ACK: sender is the responder.
// Ingress: external server responding to internal client → reverse so
// canonical key has internal client as src.
// Egress: internal server responding to external client → keep as-is.
if is_ingress { (reversed_key, false) } else { (packet_key, true) }
} else if has_syn {
} else if syn {
// SYN: sender is always the initiator.
(packet_key, true)
} else {
match detect_initiator(payload, proto, src_port, dst_port) {
Some(true) => (packet_key, true),
Some(false) => (reversed_key, false),
None => (packet_key, true),
}
// Mid-stream / UDP / ICMP: use is_ingress as best-effort heuristic.
// Egress = we are the initiator (forward); ingress = remote initiated (backward).
if is_ingress { (reversed_key, false) } else { (packet_key, true) }
}
};
packet.is_forward = is_forward;
let initiator_direction = if is_forward { direction } else { direction.flip() };
let flow = self.flows
// Record which interface the initiator is on for this flow.
let initiator_direction = if is_forward {
if is_ingress { Direction::Ingress } else { Direction::Egress }
} else {
if is_ingress { Direction::Egress } else { Direction::Ingress }
};
let flow = self.active
.entry(actual_key.clone())
.or_insert_with(|| FlowData::new(actual_key, &packet, initiator_direction));
flow.add_packet(&packet);
if self.flows.len() > self.max_flows {
if let Some(oldest_key) = self.flows.iter()
if self.active.len() > self.max_flows {
if let Some(oldest_key) = self.active.iter()
.min_by_key(|(_, flow)| flow.last_time_us)
.map(|(k, _)| k.clone())
{
self.flows.remove(&oldest_key);
self.active.remove(&oldest_key);
}
}
}
/// Take all flows out, leaving this tracker empty. Lock-free.
pub fn drain_flows(&mut self) -> Vec<FlowData> {
self.flows.drain().map(|(_, v)| v).collect()
}
/// Get a snapshot without draining.
pub fn get_flows(&self) -> Vec<FlowData> {
self.flows.values().cloned().collect()
}
pub fn get_flows_for_inference(&self, min_packets: usize) -> Vec<FlowData> {
self.flows
.values()
.filter(|flow| flow.packet_count() >= min_packets)
.cloned()
.collect()
}
pub fn cleanup_old_flows(&mut self, max_age_us: u64) {
let now = time::SystemTime::now()
.duration_since(time::UNIX_EPOCH)
.map(|d| d.as_micros() as u64)
.unwrap_or(0);
self.flows.retain(|_, flow| now.saturating_sub(flow.last_time_us) < max_age_us);
self.active.values().cloned().collect()
}
pub fn flow_count(&self) -> usize {
self.flows.len()
self.active.len()
}
}
fn detect_initiator(payload: &[u8], protocol: u8, src_port: u16, dst_port: u16) -> Option<bool> {
if payload.is_empty() { return None; }
if payload.len() >= 6 && payload[0] == 0x16 {
return match payload[5] {
0x01 => Some(true),
0x02 => Some(false),
_ => None,
};
}
if payload.len() >= 5 {
if payload.starts_with(b"GET ")
|| payload.starts_with(b"POST ")
|| payload.starts_with(b"PUT ")
|| payload.starts_with(b"HEAD ")
|| payload.starts_with(b"DELETE ")
|| payload.starts_with(b"OPTIONS ")
|| payload.starts_with(b"PATCH ")
{
return Some(true);
}
if payload.starts_with(b"HTTP/") {
return Some(false);
}
}
if protocol == 17 && (src_port == 53 || dst_port == 53) && payload.len() >= 3 {
return Some((payload[2] >> 7) == 0);
}
None
}

5
net-guardia/src/core/ml/inference.rs
View File

@ -25,10 +25,8 @@ impl Inference {
}
pub fn infer_single(&self, flow: &FlowData) -> Option<DetectionResult> {
// extract
let ae_features = self.preprocess_ae_features(flow);
// 2. Deep Autoencoder
let ae_input = Self::vec_to_array2(&ae_features);
let ae_score = match self.run_autoencoder(&ae_input) {
Ok(score) => score,
@ -77,7 +75,6 @@ impl Inference {
features.winsorize(&self.config.ae_clip_params, &self.config.ae_feature_names);
features.normalize(&self.config.ae_scaler_mean, &self.config.ae_scaler_std);
features.clip(self.config.ae_post_clip_min, self.config.ae_post_clip_max);
// Note: f64->f32 precision loss is acceptable for ML inference
features.features.iter().map(|&x| x as f32).collect()
}
@ -109,7 +106,7 @@ impl Inference {
.into_dimensionality::<tract_ndarray::Ix2>()?;
let diff = input - &output;
let mse = (&diff * &diff).sum() / output.len() as f32;
let mse = (&diff * &diff).sum() / self.config.ae_feature_names.len() as f32;
Ok(mse)
}

2
net-guardia/src/core/ml/model_loader.rs
View File

@ -28,7 +28,7 @@ impl MLModels {
Ok(model.into_optimized()?.into_runnable()?)
};
load().map_err(|_| MLError::ModelLoadFailed { path: model_path })
load().map_err(|_| MLError::ModelLoadFailed(model_path))
}
pub fn get_model_info(&self, name: &str) -> String {

8
net-guardia/src/core/ml/traffic_logger.rs
View File

@ -3,6 +3,9 @@ use std::io::{BufWriter, Write};
use std::thread;
use crossbeam::channel::{bounded, Sender, TrySendError};
use macros::log;
use crate::model::log::ml::MLLog;
pub struct TrafficLogger {
sender: Sender<Vec<String>>,
@ -27,7 +30,7 @@ impl TrafficLogger {
.spawn(move || {
for record in receiver {
if let Err(e) = writeln!(writer, "{}", record.join(",")) {
eprintln!("[traffic-logger] write error: {}", e);
log!(MLLog::TrafficLogWriteError(e.to_string()));
}
}
let _ = writer.flush();
@ -38,8 +41,7 @@ impl TrafficLogger {
pub fn log_row(&self, record: Vec<String>) {
if let Err(TrySendError::Disconnected(_)) = self.sender.try_send(record) {
eprintln!("[traffic-logger] channel disconnected");
log!(MLLog::TrafficLogChannelDisconnected);
}
// Full is ok - just drop the record
}
}

35
net-guardia/src/core/system.rs
View File

@ -56,6 +56,11 @@ impl System {
let inference_config = Arc::new(InferenceConfig::load_file(&app_config.inference.models_config_name)?);
// Write queue count to eBPF maps for symmetric hash redirect
let num_queues = app_config.network.combined_queue_count;
Self::write_num_queues(&mut ingress_ebpf, num_queues)?;
Self::write_num_queues(&mut egress_ebpf, num_queues)?;
let ebpf_services = Arc::new(EbpfServices::new(
app_config.clone(),
&mut ingress_ebpf,
@ -125,8 +130,8 @@ impl System {
let egress_ifname = self.app_config.network.egress_ifname.clone();
Self::set_memory_limit()?;
Self::attach_xdp(&mut self.ingress_ebpf, &ingress_ifname, true)?; // already loaded in configure_ingress_pipeline
Self::attach_xdp(&mut self.egress_ebpf, &egress_ifname, false)?; // load now
Self::attach_xdp(&mut self.ingress_ebpf, &ingress_ifname, true)?;
Self::attach_xdp(&mut self.egress_ebpf, &egress_ifname, false)?;
Ok(())
}
@ -149,10 +154,14 @@ impl System {
let inference_config = self.inference_config.clone();
let access_control = self.ebpf_services.access_control.clone();
let protocol_filter = self.ebpf_services.protocol_filter.clone();
let dns_filter = self.ebpf_services.dns_filter.clone();
let geo_block = self.ebpf_services.geo_block.clone();
let rate_limit = self.ebpf_services.rate_limit.clone();
let health = self.app_services.health.clone();
let ml_alert = self.app_services.ml_alert.clone();
let ml_engine = self.app_services.ml_engine.clone();
let flow_statistics = self.app_services.flow_statistics.clone();
let drop_monitor = self.ebpf_services.drop_monitor.clone();
let port = self.app_config.http.http_server_bind_port;
HttpServer::new(move || {
let cors = actix_cors::Cors::default()
@ -167,10 +176,14 @@ impl System {
.app_data(web::Data::from(inference_config.clone()))
.app_data(web::Data::from(access_control.clone()))
.app_data(web::Data::from(protocol_filter.clone()))
.app_data(web::Data::from(dns_filter.clone()))
.app_data(web::Data::from(geo_block.clone()))
.app_data(web::Data::from(rate_limit.clone()))
.app_data(web::Data::from(health.clone()))
.app_data(web::Data::from(ml_alert.clone()))
.app_data(web::Data::from(ml_engine.clone()))
.app_data(web::Data::from(flow_statistics.clone()))
.app_data(web::Data::from(drop_monitor.clone()))
.service(
web::scope("/api")
.service(acl::initialize())
@ -209,7 +222,6 @@ impl System {
) -> Result<ProgramArray<MapData>, Error> {
let registry = stage_registry();
// Load entry point program BEFORE taking maps — verifier needs map fds at load time
let entry: &mut Xdp = ebpf
.program_mut("net_guardia")
.ok_or(EbpfError::ProgramNotFound)?
@ -217,41 +229,35 @@ impl System {
.map_err(EbpfError::GetProgramFailed)?;
entry.load().map_err(EbpfError::LoadProgramFailed)?;
// Take maps
let pa_map = ebpf.take_map("PROGRAM_ARRAY").ok_or(EbpfError::MapNotFound)?;
let mut program_array = ProgramArray::try_from(pa_map).map_err(EbpfError::MapOperationError)?;
let ns_map = ebpf.take_map("NEXT_STAGE").ok_or(EbpfError::MapNotFound)?;
let mut next_stage = Array::<MapData, u32>::try_from(ns_map).map_err(EbpfError::MapOperationError)?;
// Load transmission (always present at STAGE_TRANSMISSION)
Self::load_program(ebpf, &mut program_array, "transmission", STAGE_TRANSMISSION)?;
if stages.is_empty() {
// Empty pipeline: entry → transmission
next_stage
.set(STAGE_ENTRY as u32, STAGE_TRANSMISSION, 0)
.map_err(EbpfError::MapOperationError)?;
return Ok(program_array);
}
// Load each stage and assign a slot (starting from slot 1)
let mut slots: Vec<(u32, u32)> = Vec::new(); // (stage_id, slot_index)
let mut slots: Vec<(u32, u32)> = Vec::new();
for (i, stage_name) in stages.iter().enumerate() {
let (func_name, stage_id) = registry
.get(stage_name.as_str())
.ok_or(EbpfError::ProgramNotFound)?;
let slot = (i + 1) as u32; // slots 1, 2, 3, ...
let slot = (i + 1) as u32;
Self::load_program(ebpf, &mut program_array, func_name, slot)?;
slots.push((*stage_id, slot));
}
// Wire NEXT_STAGE: entry → first slot
next_stage
.set(STAGE_ENTRY as u32, slots[0].1, 0)
.map_err(EbpfError::MapOperationError)?;
// Wire each stage to the next
for i in 0..slots.len() {
let (stage_id, _) = slots[i];
let next_slot = if i + 1 < slots.len() {
@ -297,4 +303,11 @@ impl System {
}
Ok(())
}
fn write_num_queues(ebpf: &mut Ebpf, num_queues: u32) -> Result<(), Error> {
let map = ebpf.map_mut("NUM_QUEUES").ok_or(EbpfError::MapNotFound)?;
let mut arr = Array::<_, u32>::try_from(map).map_err(EbpfError::MapOperationError)?;
arr.set(0, num_queues, 0).map_err(EbpfError::MapOperationError)?;
Ok(())
}
}

7
net-guardia/src/model/config.rs
View File

@ -32,8 +32,15 @@ pub struct NetworkConfig {
pub frame_size: u32,
pub frame_count: u32,
pub refresh_interval: u64,
#[serde(default = "default_packet_buffer_size")]
pub packet_buffer_size: usize,
#[serde(default = "default_buffer_pool_capacity")]
pub buffer_pool_capacity: usize,
}
fn default_packet_buffer_size() -> usize { 2048 }
fn default_buffer_pool_capacity() -> usize { 1024 }
#[derive(Serialize, Deserialize, Debug, Clone)]
pub struct InferenceConfig {
pub deep_autoencoder_name: String,

9
net-guardia/src/model/direction.rs
View File

@ -7,15 +7,6 @@ pub enum Direction {
Egress,
}
impl Direction {
pub fn flip(self) -> Self {
match self {
Direction::Ingress => Direction::Egress,
Direction::Egress => Direction::Ingress,
}
}
}
impl std::fmt::Display for Direction {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {

23
net-guardia/src/model/error/ebpf.rs
View File

@ -6,20 +6,20 @@ traceable! {
#[error("Failed to initialize eBPF logger")]
LoggerInitFailed => tracing::Level::ERROR,
#[error("Ebpf program not found")]
#[error("eBPF object not found")]
EbpfNotFound => tracing::Level::ERROR,
#[no_source]
#[error("Failed to load XDP program")]
#[error("XDP program not found")]
ProgramNotFound => tracing::Level::ERROR,
#[error("Failed to load XDP program")]
#[error("Failed to get XDP program")]
GetProgramFailed => tracing::Level::ERROR,
#[error("Failed to load XDP program")]
LoadProgramFailed => tracing::Level::ERROR,
#[error("Failed to attach the XDP program")]
#[error("Failed to attach XDP program")]
AttachProgramFailed => tracing::Level::ERROR,
#[error("Failed to set umem")]
@ -28,33 +28,33 @@ traceable! {
#[error("Failed to set AF_XDP socket")]
SocketSetFailed => tracing::Level::ERROR,
#[error("Failed to set AF_XDP")]
#[error("Failed to configure AF_XDP")]
AfXdpSetFailed => tracing::Level::ERROR,
#[error("Failed to wakeup TX")]
WakeupTXFailed => tracing::Level::ERROR,
#[no_source]
#[error("Map not found")]
#[error("eBPF map not found")]
MapNotFound => tracing::Level::ERROR,
#[error("An error occurred during map operation")]
#[error("eBPF map operation failed")]
MapOperationError => tracing::Level::ERROR,
#[no_source]
#[error("The ip required for operation does not exist")]
#[error("IP does not exist in map")]
IpDoesNotExist => tracing::Level::ERROR,
#[no_source]
#[error("Amount of rules has reached the upper limit")]
#[error("Rule count has reached the upper limit")]
RuleReachLimit => tracing::Level::ERROR,
#[no_source]
#[error("Fill queue initialization failed: submitted fewer frames than expected")]
#[error("Fill queue initialization failed")]
FillQueueInitFailed => tracing::Level::ERROR,
#[no_source]
#[error("Unknown error")]
#[error("Unknown eBPF error")]
UnknownError => tracing::Level::ERROR,
#[error("Failed to spawn XSK thread")]
@ -70,4 +70,3 @@ traceable! {
TXQueueError => tracing::Level::ERROR,
}
}

11
net-guardia/src/model/error/misc.rs
View File

@ -19,11 +19,16 @@ traceable! {
#[error("Network interface '{interface}' not found")]
NetworkInterfaceNotFound { interface: String } => tracing::Level::ERROR,
#[error("Invalid GeoIP configuration")]
InvalidGeoIPConfiguration => tracing::Level::ERROR,
#[no_source]
#[error("Failed to open GeoIP database '{path}': {reason}")]
GeoIPDatabaseError { path: String, reason: String } => tracing::Level::ERROR,
#[no_source]
#[error("Failed to create traffic log file '{path}': {reason}")]
TrafficLogCreateError { path: String, reason: String } => tracing::Level::ERROR,
#[no_source]
#[error("Invalid DNS domain name: {reason}")]
InvalidDnsName { reason: String } => tracing::Level::WARN,
}
}
}

2
net-guardia/src/model/error/ml.rs
View File

@ -20,4 +20,4 @@ traceable! {
#[error("Failed to parse inference configuration: {reason}")]
ConfigParseFailed { reason: String } => tracing::Level::ERROR,
}
}
}

12
net-guardia/src/model/error/system.rs
View File

@ -10,7 +10,7 @@ traceable! {
#[error("Invalid configuration")]
InvalidConfig => tracing::Level::ERROR,
#[error("Configuration not found")]
#[error("Configuration file not found")]
ConfigNotFound => tracing::Level::ERROR,
#[error("Failed to terminate instance")]
@ -20,14 +20,10 @@ traceable! {
#[error("Failed to send shutdown signal")]
ShutdownSignalFailed => tracing::Level::ERROR,
#[error("Unexcepted thread panic")]
#[error("Unexpected thread panic")]
ThreadPanic => tracing::Level::ERROR,
#[error("Unexcepted error")]
UnexpectError => tracing::Level::ERROR,
#[no_source]
#[error("Unknown error")]
UnknownError => tracing::Level::ERROR,
#[error("Unexpected error")]
UnexpectedError => tracing::Level::ERROR,
}
}

1
net-guardia/src/model/health.rs
View File

@ -52,7 +52,6 @@ pub struct MemoryUsage {
pub struct ConfiguredNetworkStats {
pub ingress: Option<NetworkStats>,
pub egress: Option<NetworkStats>,
// pub management: Option<NetworkStats>,
}
#[derive(Debug, Clone, Serialize)]

2
net-guardia/src/model/log/http.rs
View File

@ -4,6 +4,6 @@ use tracing;
loggable! {
HttpLog {
#[error("Health WebSocket lagged, skipped {skipped} messages")]
WebSocketLaged { skipped: u64 } => tracing::Level::WARN,
WebSocketLagged { skipped: u64 } => tracing::Level::WARN,
}
}

70
net-guardia/src/model/log/ml.rs
View File

@ -3,70 +3,40 @@ use tracing;
loggable! {
MLLog {
#[error("Initializing Machine Learning with inference URL: {url}")]
Initializing { url: String } => tracing::Level::INFO,
#[error("Continuing without Machine Learning detection")]
Skiped => tracing::Level::WARN,
#[error("Machine Learning detection is disabled (no ml_inference_url configured)")]
Disabled => tracing::Level::INFO,
#[error("Machine Learning detection starting")]
Starting => tracing::Level::INFO,
#[error("Machine Learning detection ready")]
Ready => tracing::Level::INFO,
#[error("Machine Learning channel disconnected")]
ChannelDisconnected => tracing::Level::WARN,
#[error("Failed to forward packet: {error}")]
ForwardPacketFailed { error: String } => tracing::Level::WARN,
#[error("Attach XDP program success")]
AttachProgramSuccess => tracing::Level::INFO,
#[error("Queue initialization incomplete")]
QueueInitIncomplete => tracing::Level::WARN,
#[error("Queue refill incomplete")]
QueueRefillIncomplete => tracing::Level::WARN,
#[error("No frames submit to queue")]
NoFrameSubmit => tracing::Level::WARN,
#[error("Queue pair {queue_id} started successfully")]
QueuePairStarted { queue_id: u32 } => tracing::Level::INFO,
#[error("ML models loaded - {info}")]
ModelsLoaded { info: String } => tracing::Level::INFO,
#[error("Inference configuration loaded: {features} features, {attacks} attack types")]
ConfigLoaded { features: usize, attacks: usize } => tracing::Level::INFO,
#[error("Running inference on {size} flows")]
RunningInference { size: usize } => tracing::Level::INFO,
#[error("Inference completed: {total_flows} flows ({anomaly} anomaly, {benign} benign) in {duration_ms}ms ({throughput:.1} flows/s)")]
InferenceCompleted { total_flows: usize, anomaly: usize, benign: usize, duration_ms: u32, throughput: f32 } => tracing::Level::INFO,
#[error("Inference skipped: {reason}")]
InferenceSkipped { reason: String } => tracing::Level::INFO,
#[error("Inference returned fewer results: expected {size}, got {len}")]
InferenceResults { size: usize, len: usize } => tracing::Level::WARN,
#[error("{model} inference failed: {error}")]
InferenceFailed { model: String, error: String } => tracing::Level::ERROR,
#[error("Threat detected [{direction}]: {flow} -> {attack_type} (confidence: {confidence:.2}, ae_score: {ae_score:.4})")]
ThreatDetected { direction: String, flow: String, attack_type: String, confidence: f32, ae_score: f32 } => tracing::Level::WARN,
#[error("Flow stats: total={total_flows}, qualified={flows_len}, min_packets={min_packets}, packet_counts: {counts}")]
FlowStats { total_flows: usize, flows_len: usize, min_packets: usize, counts: String } => tracing::Level::INFO,
#[error("Running inference on {size} flows")]
RunningInference { size: usize } => tracing::Level::INFO,
#[error("Inference returned fewer results: expected {size}, got {len}")]
InferenceResults { size: usize, len: usize } => tracing::Level::INFO,
#[error("{model} inference failed: {error}")]
InferenceFailed { model: String, error: String } => tracing::Level::INFO,
FlowStats { total_flows: usize, flows_len: usize, min_packets: usize, counts: String } => tracing::Level::INFO,
#[error("Failed to parse packet (length: {len})")]
ParsePacketFailed { len: usize } => tracing::Level::INFO,
ParsePacketFailed { len: usize } => tracing::Level::WARN,
#[error("Failed to broadcast ML alert: {error}")]
BroadcastAlertFailed { error: String } => tracing::Level::ERROR,
#[error("Traffic logger write error: {error}")]
TrafficLogWriteError { error: String } => tracing::Level::ERROR,
#[error("Traffic logger channel disconnected")]
TrafficLogChannelDisconnected => tracing::Level::WARN,
}
}
}

6
net-guardia/src/model/log/system.rs
View File

@ -19,12 +19,12 @@ loggable! {
TerminateComplete => tracing::Level::INFO,
#[error("Invalid configuration")]
InvalidConfig => tracing::Level::INFO,
InvalidConfig => tracing::Level::ERROR,
#[error("Configuration not found")]
ConfigNotFound => tracing::Level::INFO,
ConfigNotFound => tracing::Level::ERROR,
#[error("Traffic logging mode enabled — writing packets to: {path}")]
TrafficLoggingEnabled { path: String } => tracing::Level::INFO,
}
}
}

25
net-guardia/src/model/ml_detection.rs
View File

@ -1,4 +1,4 @@
use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
use std::net::{Ipv4Addr, Ipv6Addr};
use serde::{Deserialize, Serialize};
use tract_onnx::prelude::{Graph, SimplePlan, TypedFact, TypedOp};
@ -35,15 +35,13 @@ pub struct FlowKey {
impl FlowKey {
pub fn from_packet(packet: &UserPacket) -> Self {
let (src_ip, ip_version) = Self::parse_ip_to_bytes(&packet.src_ip);
let (dst_ip, _) = Self::parse_ip_to_bytes(&packet.dst_ip);
Self {
src_ip,
dst_ip,
src_ip: packet.src_ip,
dst_ip: packet.dst_ip,
src_port: packet.src_port,
dst_port: packet.dst_port,
protocol: packet.protocol,
ip_version,
ip_version: packet.ip_version,
}
}
@ -66,21 +64,6 @@ impl FlowKey {
self.ip_bytes_to_string(&self.dst_ip)
}
fn parse_ip_to_bytes(ip_str: &str) -> ([u8; 16], u8) {
if let Ok(addr) = ip_str.parse::<IpAddr>() {
match addr {
IpAddr::V4(v4) => {
let mut buf = [0u8; 16];
buf[..4].copy_from_slice(&v4.octets());
(buf, 4)
}
IpAddr::V6(v6) => (v6.octets(), 6),
}
} else {
([0u8; 16], 4)
}
}
fn ip_bytes_to_string(&self, bytes: &[u8; 16]) -> String {
if self.ip_version == 6 {
Ipv6Addr::from(*bytes).to_string()

27
net-guardia/src/model/user_packet.rs
View File

@ -1,10 +1,11 @@
use std::net::{Ipv4Addr, Ipv6Addr};
pub struct UserPacket {
#[allow(dead_code)]
pub ip_version: u8,
pub protocol: u8,
pub tcp_flags: u8,
pub src_ip: String,
pub dst_ip: String,
pub src_ip: [u8; 16],
pub dst_ip: [u8; 16],
pub src_port: u16,
pub dst_port: u16,
pub packet_length: u32,
@ -14,3 +15,23 @@ pub struct UserPacket {
pub timestamp_us: u64,
pub is_forward: bool,
}
impl UserPacket {
/// Format source IP as a human-readable string.
pub fn src_ip_string(&self) -> String {
Self::ip_bytes_to_string(self.ip_version, &self.src_ip)
}
/// Format destination IP as a human-readable string.
pub fn dst_ip_string(&self) -> String {
Self::ip_bytes_to_string(self.ip_version, &self.dst_ip)
}
fn ip_bytes_to_string(ip_version: u8, bytes: &[u8; 16]) -> String {
if ip_version == 6 {
Ipv6Addr::from(*bytes).to_string()
} else {
Ipv4Addr::from([bytes[0], bytes[1], bytes[2], bytes[3]]).to_string()
}
}
}

1
net-guardia/src/utils/ip_address.rs
View File

@ -1,6 +1,5 @@
use std::net::IpAddr;
#[allow(dead_code)]
pub fn is_private_ip(ip: &IpAddr) -> bool {
match ip {
IpAddr::V4(v4) => {

69
net-guardia/src/utils/packet_parser.rs
View File

@ -30,30 +30,16 @@ fn parse_ipv4(packet_data: &[u8], timestamp_us: u64) -> Option<(UserPacket, usiz
let protocol_byte = ip_header[9];
let src_ip_raw = u32::from_be_bytes([ip_header[12], ip_header[13], ip_header[14], ip_header[15]]);
let dst_ip_raw = u32::from_be_bytes([ip_header[16], ip_header[17], ip_header[18], ip_header[19]]);
let mut src_ip = [0u8; 16];
src_ip[..4].copy_from_slice(&ip_header[12..16]);
let mut dst_ip = [0u8; 16];
dst_ip[..4].copy_from_slice(&ip_header[16..20]);
let ihl = (ip_header[0] & 0x0F) as usize * 4;
let total_len = u16::from_be_bytes([ip_header[2], ip_header[3]]) as u32;
if protocol_byte != 6 && protocol_byte != 17 {
// Still track non-TCP/UDP packets (e.g. ICMP) for flow statistics
let packet = UserPacket {
ip_version: 4,
protocol: protocol_byte,
tcp_flags: 0,
src_ip: format_ipv4(src_ip_raw),
dst_ip: format_ipv4(dst_ip_raw),
src_port: 0,
dst_port: 0,
packet_length: total_len,
payload_length: 0,
header_length: 0,
tcp_window_size: 0,
timestamp_us,
is_forward: false,
};
return Some((packet, 14 + ihl));
return None;
}
if packet_data.len() < 14 + ihl + 4 {
@ -87,8 +73,8 @@ fn parse_ipv4(packet_data: &[u8], timestamp_us: u64) -> Option<(UserPacket, usiz
ip_version: 4,
protocol: protocol_byte,
tcp_flags,
src_ip: format_ipv4(src_ip_raw),
dst_ip: format_ipv4(dst_ip_raw),
src_ip,
dst_ip,
src_port,
dst_port,
packet_length: total_len,
@ -111,35 +97,17 @@ fn parse_ipv6(packet_data: &[u8], timestamp_us: u64) -> Option<(UserPacket, usiz
let protocol_byte = ip_header[6];
let mut source_ip_bytes = [0u8; 16];
source_ip_bytes.copy_from_slice(&ip_header[8..24]);
let src_ip_raw = u128::from_be_bytes(source_ip_bytes);
let mut src_ip = [0u8; 16];
src_ip.copy_from_slice(&ip_header[8..24]);
let mut dest_ip_bytes = [0u8; 16];
dest_ip_bytes.copy_from_slice(&ip_header[24..40]);
let dst_ip_raw = u128::from_be_bytes(dest_ip_bytes);
let mut dst_ip = [0u8; 16];
dst_ip.copy_from_slice(&ip_header[24..40]);
let payload_len = u16::from_be_bytes([ip_header[4], ip_header[5]]) as u32;
let total_len = payload_len + 40;
if protocol_byte != 6 && protocol_byte != 17 {
// Still track non-TCP/UDP packets (e.g. ICMPv6) for flow statistics
let packet = UserPacket {
ip_version: 6,
protocol: protocol_byte,
tcp_flags: 0,
src_ip: format_ipv6(src_ip_raw),
dst_ip: format_ipv6(dst_ip_raw),
src_port: 0,
dst_port: 0,
packet_length: total_len,
payload_length: 0,
header_length: 0,
tcp_window_size: 0,
timestamp_us,
is_forward: false,
};
return Some((packet, 14 + 40));
return None;
}
if packet_data.len() < 54 + 4 {
@ -173,8 +141,8 @@ fn parse_ipv6(packet_data: &[u8], timestamp_us: u64) -> Option<(UserPacket, usiz
ip_version: 6,
protocol: protocol_byte,
tcp_flags,
src_ip: format_ipv6(src_ip_raw),
dst_ip: format_ipv6(dst_ip_raw),
src_ip,
dst_ip,
src_port,
dst_port,
packet_length: total_len,
@ -188,12 +156,3 @@ fn parse_ipv6(packet_data: &[u8], timestamp_us: u64) -> Option<(UserPacket, usiz
Some((packet, payload_start))
}
pub fn format_ipv4(addr: u32) -> String {
let bytes = addr.to_be_bytes();
format!("{}.{}.{}.{}", bytes[0], bytes[1], bytes[2], bytes[3],)
}
pub fn format_ipv6(addr: u128) -> String {
let bytes = addr.to_be_bytes();
std::net::Ipv6Addr::from(bytes).to_string()
}

47
net-guardia/src/web/api/acl.rs
View File

@ -1,11 +1,18 @@
use std::net::{SocketAddrV4, SocketAddrV6};
use actix_web::{web, HttpResponse, Responder, Scope};
use serde::Deserialize;
use crate::core::ebpf::access_control::AccessControl;
use crate::core::ebpf::geo_block::GeoBlock;
use crate::model::direction::FlowDirection;
use crate::model::list_type::ListType;
#[derive(Deserialize)]
struct CountryCodesRequest {
country_codes: Vec<String>,
}
pub fn initialize() -> Scope {
web::scope("/acl")
.route("/ipv4/{direction}/{list_type}", web::get().to(get_ipv4_list))
@ -14,6 +21,9 @@ pub fn initialize() -> Scope {
.route("/ipv6/{direction}/{list_type}", web::put().to(add_ipv6_list))
.route("/ipv4/{direction}/{list_type}", web::delete().to(remove_ipv4_list))
.route("/ipv6/{direction}/{list_type}", web::delete().to(remove_ipv6_list))
.route("/geo/blocked", web::get().to(get_geo_blocked))
.route("/geo/block", web::put().to(block_geo_countries))
.route("/geo/unblock", web::delete().to(unblock_geo_countries))
}
async fn get_ipv4_list(
@ -85,3 +95,40 @@ async fn remove_ipv6_list(
Err(e) => HttpResponse::InternalServerError().json(serde_json::json!({"error": e.to_string()})),
}
}
async fn get_geo_blocked(
geo_block: web::Data<GeoBlock>,
) -> impl Responder {
let blocked = geo_block.get_blocked_countries();
HttpResponse::Ok().json(serde_json::json!({"blocked_countries": blocked}))
}
async fn block_geo_countries(
body: web::Json<CountryCodesRequest>,
geo_block: web::Data<GeoBlock>,
) -> impl Responder {
let codes = body.into_inner().country_codes;
match geo_block.block_countries(&codes) {
Ok(total_prefixes) => HttpResponse::Ok().json(serde_json::json!({
"blocked_countries": geo_block.get_blocked_countries(),
"total_prefixes": total_prefixes,
})),
Err(e) => HttpResponse::InternalServerError()
.json(serde_json::json!({"error": e.to_string()})),
}
}
async fn unblock_geo_countries(
body: web::Json<CountryCodesRequest>,
geo_block: web::Data<GeoBlock>,
) -> impl Responder {
let codes = body.into_inner().country_codes;
match geo_block.unblock_countries(&codes) {
Ok(total_prefixes) => HttpResponse::Ok().json(serde_json::json!({
"blocked_countries": geo_block.get_blocked_countries(),
"total_prefixes": total_prefixes,
})),
Err(e) => HttpResponse::InternalServerError()
.json(serde_json::json!({"error": e.to_string()})),
}
}

263
net-guardia/src/web/api/filter.rs
View File

@ -1,14 +1,80 @@
use std::fmt;
use std::net::{Ipv4Addr, Ipv6Addr, SocketAddrV4, SocketAddrV6};
use actix_web::{web, HttpResponse, Responder, Scope};
use common::model::http_method::HttpMethod;
use serde::Deserialize;
use crate::core::ebpf::dns_filter::DnsFilter;
use crate::core::ebpf::protocol_filter::ProtocolFilter;
/// Convert a fallible result into an Ok (200) or InternalServerError (500) response.
fn ok_or_error<T, E: fmt::Display>(result: Result<T, E>) -> HttpResponse {
match result {
Ok(_) => HttpResponse::Ok().finish(),
Err(e) => HttpResponse::InternalServerError()
.json(serde_json::json!({"error": e.to_string()})),
}
}
pub fn initialize() -> Scope {
web::scope("/filter")
.service(http_scope())
.service(ssh_scope())
.service(dns_scope())
}
#[derive(Deserialize)]
struct DnsDomainsPayload {
domains: Vec<String>,
}
fn dns_scope() -> Scope {
web::scope("/dns")
.service(
web::scope("/blacklist")
.route("", web::get().to(get_dns_blacklist))
.route("", web::put().to(add_dns_blacklist))
.route("", web::delete().to(remove_dns_blacklist))
)
}
const MAX_DNS_DOMAINS_PER_REQUEST: usize = 1000;
async fn get_dns_blacklist(service: web::Data<DnsFilter>) -> impl Responder {
HttpResponse::Ok().json(serde_json::json!({"domains": service.list_domains()}))
}
async fn add_dns_blacklist(
payload: web::Json<DnsDomainsPayload>,
service: web::Data<DnsFilter>,
) -> impl Responder {
let domains = payload.into_inner().domains;
if domains.len() > MAX_DNS_DOMAINS_PER_REQUEST {
return HttpResponse::BadRequest()
.json(serde_json::json!({"error": format!("too many domains (max {})", MAX_DNS_DOMAINS_PER_REQUEST)}));
}
for domain in &domains {
if let Err(e) = service.add_domain(domain) {
return HttpResponse::InternalServerError()
.json(serde_json::json!({"error": e.to_string()}));
}
}
HttpResponse::Ok().json(serde_json::json!({"added": domains.len()}))
}
async fn remove_dns_blacklist(
payload: web::Json<DnsDomainsPayload>,
service: web::Data<DnsFilter>,
) -> impl Responder {
let domains = payload.into_inner().domains;
for domain in &domains {
if let Err(e) = service.remove_domain(domain) {
return HttpResponse::InternalServerError()
.json(serde_json::json!({"error": e.to_string()}));
}
}
HttpResponse::Ok().json(serde_json::json!({"removed": domains.len()}))
}
fn http_scope() -> Scope {
@ -59,230 +125,119 @@ fn ssh_blacklist_scope() -> Scope {
// --- HTTP service handlers ---
async fn get_ipv4_http_service(service: web::Data<ProtocolFilter>) -> impl Responder {
let list = service.get_ipv4_http_service().await;
HttpResponse::Ok().json(list)
HttpResponse::Ok().json(service.get_ipv4_http_service().await)
}
async fn get_ipv6_http_service(service: web::Data<ProtocolFilter>) -> impl Responder {
let list = service.get_ipv6_http_service().await;
HttpResponse::Ok().json(list)
HttpResponse::Ok().json(service.get_ipv6_http_service().await)
}
async fn add_ipv4_http_service(
payload: web::Json<(SocketAddrV4, Vec<HttpMethod>)>,
service: web::Data<ProtocolFilter>,
) -> impl Responder {
async fn add_ipv4_http_service(payload: web::Json<(SocketAddrV4, Vec<HttpMethod>)>, service: web::Data<ProtocolFilter>) -> impl Responder {
let (addr, methods) = payload.into_inner();
match service.add_ipv4_http_service(addr, methods).await {
Ok(_) => HttpResponse::Ok().finish(),
Err(e) => HttpResponse::InternalServerError().json(serde_json::json!({"error": e.to_string()})),
}
ok_or_error(service.add_ipv4_http_service(addr, methods).await)
}
async fn add_ipv6_http_service(
payload: web::Json<(SocketAddrV6, Vec<HttpMethod>)>,
service: web::Data<ProtocolFilter>,
) -> impl Responder {
async fn add_ipv6_http_service(payload: web::Json<(SocketAddrV6, Vec<HttpMethod>)>, service: web::Data<ProtocolFilter>) -> impl Responder {
let (addr, methods) = payload.into_inner();
match service.add_ipv6_http_service(addr, methods).await {
Ok(_) => HttpResponse::Ok().finish(),
Err(e) => HttpResponse::InternalServerError().json(serde_json::json!({"error": e.to_string()})),
}
ok_or_error(service.add_ipv6_http_service(addr, methods).await)
}
async fn remove_ipv4_http_service(
payload: web::Json<(SocketAddrV4, Vec<HttpMethod>)>,
service: web::Data<ProtocolFilter>,
) -> impl Responder {
async fn remove_ipv4_http_service(payload: web::Json<(SocketAddrV4, Vec<HttpMethod>)>, service: web::Data<ProtocolFilter>) -> impl Responder {
let (addr, methods) = payload.into_inner();
match service.remove_ipv4_http_service(addr, methods).await {
Ok(_) => HttpResponse::Ok().finish(),
Err(e) => HttpResponse::InternalServerError().json(serde_json::json!({"error": e.to_string()})),
}
ok_or_error(service.remove_ipv4_http_service(addr, methods).await)
}
async fn remove_ipv6_http_service(
payload: web::Json<(SocketAddrV6, Vec<HttpMethod>)>,
service: web::Data<ProtocolFilter>,
) -> impl Responder {
async fn remove_ipv6_http_service(payload: web::Json<(SocketAddrV6, Vec<HttpMethod>)>, service: web::Data<ProtocolFilter>) -> impl Responder {
let (addr, methods) = payload.into_inner();
match service.remove_ipv6_http_service(addr, methods).await {
Ok(_) => HttpResponse::Ok().finish(),
Err(e) => HttpResponse::InternalServerError().json(serde_json::json!({"error": e.to_string()})),
}
ok_or_error(service.remove_ipv6_http_service(addr, methods).await)
}
// --- SSH service handlers ---
async fn get_ipv4_ssh_service(service: web::Data<ProtocolFilter>) -> impl Responder {
let list = service.get_ipv4_ssh_service().await;
HttpResponse::Ok().json(list)
HttpResponse::Ok().json(service.get_ipv4_ssh_service().await)
}
async fn get_ipv6_ssh_service(service: web::Data<ProtocolFilter>) -> impl Responder {
let list = service.get_ipv6_ssh_service().await;
HttpResponse::Ok().json(list)
HttpResponse::Ok().json(service.get_ipv6_ssh_service().await)
}
async fn add_ipv4_ssh_service(
ip_addr: web::Json<SocketAddrV4>,
service: web::Data<ProtocolFilter>,
) -> impl Responder {
match service.add_ipv4_ssh_service(ip_addr.into_inner()).await {
Ok(_) => HttpResponse::Ok().finish(),
Err(e) => HttpResponse::InternalServerError().json(serde_json::json!({"error": e.to_string()})),
}
async fn add_ipv4_ssh_service(ip_addr: web::Json<SocketAddrV4>, service: web::Data<ProtocolFilter>) -> impl Responder {
ok_or_error(service.add_ipv4_ssh_service(ip_addr.into_inner()).await)
}
async fn add_ipv6_ssh_service(
ip_addr: web::Json<SocketAddrV6>,
service: web::Data<ProtocolFilter>,
) -> impl Responder {
match service.add_ipv6_ssh_service(ip_addr.into_inner()).await {
Ok(_) => HttpResponse::Ok().finish(),
Err(e) => HttpResponse::InternalServerError().json(serde_json::json!({"error": e.to_string()})),
}
async fn add_ipv6_ssh_service(ip_addr: web::Json<SocketAddrV6>, service: web::Data<ProtocolFilter>) -> impl Responder {
ok_or_error(service.add_ipv6_ssh_service(ip_addr.into_inner()).await)
}
async fn remove_ipv4_ssh_service(
ip_addr: web::Json<SocketAddrV4>,
service: web::Data<ProtocolFilter>,
) -> impl Responder {
match service.remove_ipv4_ssh_service(ip_addr.into_inner()).await {
Ok(_) => HttpResponse::Ok().finish(),
Err(e) => HttpResponse::InternalServerError().json(serde_json::json!({"error": e.to_string()})),
}
async fn remove_ipv4_ssh_service(ip_addr: web::Json<SocketAddrV4>, service: web::Data<ProtocolFilter>) -> impl Responder {
ok_or_error(service.remove_ipv4_ssh_service(ip_addr.into_inner()).await)
}
async fn remove_ipv6_ssh_service(
ip_addr: web::Json<SocketAddrV6>,
service: web::Data<ProtocolFilter>,
) -> impl Responder {
match service.remove_ipv6_ssh_service(ip_addr.into_inner()).await {
Ok(_) => HttpResponse::Ok().finish(),
Err(e) => HttpResponse::InternalServerError().json(serde_json::json!({"error": e.to_string()})),
}
async fn remove_ipv6_ssh_service(ip_addr: web::Json<SocketAddrV6>, service: web::Data<ProtocolFilter>) -> impl Responder {
ok_or_error(service.remove_ipv6_ssh_service(ip_addr.into_inner()).await)
}
// --- SSH whitelist handlers ---
async fn is_ssh_white_list_enable(service: web::Data<ProtocolFilter>) -> impl Responder {
let enabled = service.is_ssh_white_list_enable().await;
HttpResponse::Ok().json(enabled)
HttpResponse::Ok().json(service.is_ssh_white_list_enable().await)
}
async fn enable_ssh_white_list(service: web::Data<ProtocolFilter>) -> impl Responder {
match service.enable_ssh_white_list().await {
Ok(_) => HttpResponse::Ok().finish(),
Err(e) => HttpResponse::InternalServerError().json(serde_json::json!({"error": e.to_string()})),
}
ok_or_error(service.enable_ssh_white_list().await)
}
async fn disable_ssh_white_list(service: web::Data<ProtocolFilter>) -> impl Responder {
match service.disable_ssh_white_list().await {
Ok(_) => HttpResponse::Ok().finish(),
Err(e) => HttpResponse::InternalServerError().json(serde_json::json!({"error": e.to_string()})),
}
ok_or_error(service.disable_ssh_white_list().await)
}
async fn get_ipv4_ssh_white_list(service: web::Data<ProtocolFilter>) -> impl Responder {
let list = service.get_ipv4_ssh_white_list().await;
HttpResponse::Ok().json(list)
HttpResponse::Ok().json(service.get_ipv4_ssh_white_list().await)
}
async fn get_ipv6_ssh_white_list(service: web::Data<ProtocolFilter>) -> impl Responder {
let list = service.get_ipv6_ssh_white_list().await;
HttpResponse::Ok().json(list)
HttpResponse::Ok().json(service.get_ipv6_ssh_white_list().await)
}
async fn add_ipv4_ssh_white_list(
ip_addr: web::Json<Ipv4Addr>,
service: web::Data<ProtocolFilter>,
) -> impl Responder {
match service.add_ipv4_ssh_white_list(ip_addr.into_inner()).await {
Ok(_) => HttpResponse::Ok().finish(),
Err(e) => HttpResponse::InternalServerError().json(serde_json::json!({"error": e.to_string()})),
}
async fn add_ipv4_ssh_white_list(ip_addr: web::Json<Ipv4Addr>, service: web::Data<ProtocolFilter>) -> impl Responder {
ok_or_error(service.add_ipv4_ssh_white_list(ip_addr.into_inner()).await)
}
async fn add_ipv6_ssh_white_list(
ip_addr: web::Json<Ipv6Addr>,
service: web::Data<ProtocolFilter>,
) -> impl Responder {
match service.add_ipv6_ssh_white_list(ip_addr.into_inner()).await {
Ok(_) => HttpResponse::Ok().finish(),
Err(e) => HttpResponse::InternalServerError().json(serde_json::json!({"error": e.to_string()})),
}
async fn add_ipv6_ssh_white_list(ip_addr: web::Json<Ipv6Addr>, service: web::Data<ProtocolFilter>) -> impl Responder {
ok_or_error(service.add_ipv6_ssh_white_list(ip_addr.into_inner()).await)
}
async fn remove_ipv4_ssh_white_list(
ip_addr: web::Json<Ipv4Addr>,
service: web::Data<ProtocolFilter>,
) -> impl Responder {
match service.remove_ipv4_ssh_white_list(ip_addr.into_inner()).await {
Ok(_) => HttpResponse::Ok().finish(),
Err(e) => HttpResponse::InternalServerError().json(serde_json::json!({"error": e.to_string()})),
}
async fn remove_ipv4_ssh_white_list(ip_addr: web::Json<Ipv4Addr>, service: web::Data<ProtocolFilter>) -> impl Responder {
ok_or_error(service.remove_ipv4_ssh_white_list(ip_addr.into_inner()).await)
}
async fn remove_ipv6_ssh_white_list(
ip_addr: web::Json<Ipv6Addr>,
service: web::Data<ProtocolFilter>,
) -> impl Responder {
match service.remove_ipv6_ssh_white_list(ip_addr.into_inner()).await {
Ok(_) => HttpResponse::Ok().finish(),
Err(e) => HttpResponse::InternalServerError().json(serde_json::json!({"error": e.to_string()})),
}
async fn remove_ipv6_ssh_white_list(ip_addr: web::Json<Ipv6Addr>, service: web::Data<ProtocolFilter>) -> impl Responder {
ok_or_error(service.remove_ipv6_ssh_white_list(ip_addr.into_inner()).await)
}
// --- SSH blacklist handlers ---
async fn get_ipv4_ssh_black_list(service: web::Data<ProtocolFilter>) -> impl Responder {
let list = service.get_ipv4_ssh_black_list().await;
HttpResponse::Ok().json(list)
HttpResponse::Ok().json(service.get_ipv4_ssh_black_list().await)
}
async fn get_ipv6_ssh_black_list(service: web::Data<ProtocolFilter>) -> impl Responder {
let list = service.get_ipv6_ssh_black_list().await;
HttpResponse::Ok().json(list)
HttpResponse::Ok().json(service.get_ipv6_ssh_black_list().await)
}
async fn add_ipv4_ssh_black_list(
ip_addr: web::Json<Ipv4Addr>,
service: web::Data<ProtocolFilter>,
) -> impl Responder {
match service.add_ipv4_ssh_black_list(ip_addr.into_inner()).await {
Ok(_) => HttpResponse::Ok().finish(),
Err(e) => HttpResponse::InternalServerError().json(serde_json::json!({"error": e.to_string()})),
}
async fn add_ipv4_ssh_black_list(ip_addr: web::Json<Ipv4Addr>, service: web::Data<ProtocolFilter>) -> impl Responder {
ok_or_error(service.add_ipv4_ssh_black_list(ip_addr.into_inner()).await)
}
async fn add_ipv6_ssh_black_list(
ip_addr: web::Json<Ipv6Addr>,
service: web::Data<ProtocolFilter>,
) -> impl Responder {
match service.add_ipv6_ssh_black_list(ip_addr.into_inner()).await {
Ok(_) => HttpResponse::Ok().finish(),
Err(e) => HttpResponse::InternalServerError().json(serde_json::json!({"error": e.to_string()})),
}
async fn add_ipv6_ssh_black_list(ip_addr: web::Json<Ipv6Addr>, service: web::Data<ProtocolFilter>) -> impl Responder {
ok_or_error(service.add_ipv6_ssh_black_list(ip_addr.into_inner()).await)
}
async fn remove_ipv4_ssh_black_list(
ip_addr: web::Json<Ipv4Addr>,
service: web::Data<ProtocolFilter>,
) -> impl Responder {
match service.remove_ipv4_ssh_black_list(ip_addr.into_inner()).await {
Ok(_) => HttpResponse::Ok().finish(),
Err(e) => HttpResponse::InternalServerError().json(serde_json::json!({"error": e.to_string()})),
}
async fn remove_ipv4_ssh_black_list(ip_addr: web::Json<Ipv4Addr>, service: web::Data<ProtocolFilter>) -> impl Responder {
ok_or_error(service.remove_ipv4_ssh_black_list(ip_addr.into_inner()).await)
}
async fn remove_ipv6_ssh_black_list(
ip_addr: web::Json<Ipv6Addr>,
service: web::Data<ProtocolFilter>,
) -> impl Responder {
match service.remove_ipv6_ssh_black_list(ip_addr.into_inner()).await {
Ok(_) => HttpResponse::Ok().finish(),
Err(e) => HttpResponse::InternalServerError().json(serde_json::json!({"error": e.to_string()})),
}
async fn remove_ipv6_ssh_black_list(ip_addr: web::Json<Ipv6Addr>, service: web::Data<ProtocolFilter>) -> impl Responder {
ok_or_error(service.remove_ipv6_ssh_black_list(ip_addr.into_inner()).await)
}

19
net-guardia/src/web/api/ml.rs
View File

@ -1,12 +1,27 @@
use actix_web::{web, HttpResponse, Responder, Scope};
use crate::core::ml::engine::Engine;
pub fn initialize() -> Scope {
web::scope("/ml")
.route("/status", web::get().to(get_status))
}
async fn get_status() -> impl Responder {
async fn get_status(
engine: web::Data<Engine>,
) -> impl Responder {
let trackers = engine.trackers();
let num_trackers = trackers.len();
let total_flows: usize = trackers.iter()
.map(|t| t.lock().flow_count())
.sum();
let has_traffic_logger = engine.has_traffic_logger();
HttpResponse::Ok().json(serde_json::json!({
"active": true
"active": true,
"mode": if has_traffic_logger { "traffic_logging" } else { "inference" },
"num_trackers": num_trackers,
"total_flows": total_flows,
"inference_interval_secs": engine.inference_interval_secs(),
}))
}

45
net-guardia/src/web/api/rate_limit.rs
View File

@ -1,5 +1,6 @@
use actix_web::{web, HttpResponse, Responder, Scope};
use serde::{Deserialize, Serialize};
use common::define::setting::*;
use crate::core::ebpf::rate_limit::RateLimitConfig;
@ -18,13 +19,15 @@ pub fn initialize() -> Scope {
.route("/config", web::put().to(set_config))
}
async fn get_config() -> impl Responder {
async fn get_config(
config: web::Data<RateLimitConfig>,
) -> impl Responder {
HttpResponse::Ok().json(RateLimitSettings {
packet_rate: Some(common::model::rate_limit::DEFAULT_PACKET_RATE),
syn_rate: Some(common::model::rate_limit::DEFAULT_SYN_RATE),
udp_rate: Some(common::model::rate_limit::DEFAULT_UDP_RATE),
dns_rate: Some(common::model::rate_limit::DEFAULT_DNS_RATE),
window_ns: Some(common::model::rate_limit::DEFAULT_WINDOW_NS),
packet_rate: Some(config.get_packet_rate().unwrap_or(DEFAULT_PACKET_RATE)),
syn_rate: Some(config.get_syn_rate().unwrap_or(DEFAULT_SYN_RATE)),
udp_rate: Some(config.get_udp_rate().unwrap_or(DEFAULT_UDP_RATE)),
dns_rate: Some(config.get_dns_rate().unwrap_or(DEFAULT_DNS_RATE)),
window_ns: Some(config.get_window_ns().unwrap_or(DEFAULT_WINDOW_NS)),
})
}
@ -33,10 +36,30 @@ async fn set_config(
config: web::Data<RateLimitConfig>,
) -> impl Responder {
let s = settings.into_inner();
if let Some(v) = s.packet_rate { let _ = config.set_packet_rate(v); }
if let Some(v) = s.syn_rate { let _ = config.set_syn_rate(v); }
if let Some(v) = s.udp_rate { let _ = config.set_udp_rate(v); }
if let Some(v) = s.dns_rate { let _ = config.set_dns_rate(v); }
if let Some(v) = s.window_ns { let _ = config.set_window_ns(v); }
if let Some(v) = s.packet_rate {
if let Err(e) = config.set_packet_rate(v) {
return HttpResponse::InternalServerError().json(serde_json::json!({"error": e.to_string()}));
}
}
if let Some(v) = s.syn_rate {
if let Err(e) = config.set_syn_rate(v) {
return HttpResponse::InternalServerError().json(serde_json::json!({"error": e.to_string()}));
}
}
if let Some(v) = s.udp_rate {
if let Err(e) = config.set_udp_rate(v) {
return HttpResponse::InternalServerError().json(serde_json::json!({"error": e.to_string()}));
}
}
if let Some(v) = s.dns_rate {
if let Err(e) = config.set_dns_rate(v) {
return HttpResponse::InternalServerError().json(serde_json::json!({"error": e.to_string()}));
}
}
if let Some(v) = s.window_ns {
if let Err(e) = config.set_window_ns(v) {
return HttpResponse::InternalServerError().json(serde_json::json!({"error": e.to_string()}));
}
}
HttpResponse::Ok().json(serde_json::json!({"status": "ok"}))
}

6
net-guardia/src/web/api/stats.rs
View File

@ -1,5 +1,6 @@
use actix_web::{web, HttpResponse, Responder, Scope};
use crate::core::ebpf::drop_monitor::DropMonitor;
use crate::core::infrastructure::statistics::FlowStatistics;
pub fn initialize() -> Scope {
@ -7,6 +8,7 @@ pub fn initialize() -> Scope {
.route("/flows", web::get().to(get_all_flows))
.route("/flows/top/{n}", web::get().to(get_top_flows))
.route("/summary", web::get().to(get_summary))
.route("/drops", web::get().to(get_drop_stats))
}
async fn get_all_flows(stats: web::Data<FlowStatistics>) -> impl Responder {
@ -24,3 +26,7 @@ async fn get_top_flows(
async fn get_summary(stats: web::Data<FlowStatistics>) -> impl Responder {
HttpResponse::Ok().json(stats.get_summary())
}
async fn get_drop_stats(monitor: web::Data<DropMonitor>) -> impl Responder {
HttpResponse::Ok().json(monitor.get_counters())
}

15
net-guardia/src/web/api/ws.rs
View File

@ -1,15 +1,17 @@
use actix_web::{web, HttpRequest, HttpResponse, Responder, Scope};
use crate::core::ebpf::drop_monitor::DropMonitor;
use crate::core::infrastructure::health::SystemHealth;
use crate::core::infrastructure::statistics::FlowStatistics;
use crate::core::ml::alert::MLAlert;
use crate::web::websocket::{alert_websocket, flow_websocket, health_websocket};
use crate::web::websocket::{alert_websocket, drop_websocket, flow_websocket, health_websocket};
pub fn initialize() -> Scope {
web::scope("/ws")
.route("/health", web::get().to(health_ws))
.route("/alerts", web::get().to(alerts_ws))
.route("/flows", web::get().to(flows_ws))
.route("/drops", web::get().to(drops_ws))
}
async fn health_ws(
@ -44,3 +46,14 @@ async fn flows_ws(
Err(err) => HttpResponse::InternalServerError().json(serde_json::json!({"error": format!("WebSocket error: {}", err)})),
}
}
async fn drops_ws(
req: HttpRequest,
stream: web::Payload,
monitor: web::Data<DropMonitor>,
) -> impl Responder {
match drop_websocket::websocket_drops(req, stream, monitor).await {
Ok(response) => response,
Err(err) => HttpResponse::InternalServerError().json(serde_json::json!({"error": format!("WebSocket error: {}", err)})),
}
}

2
net-guardia/src/web/websocket/alert_websocket.rs
View File

@ -45,7 +45,7 @@ async fn handle_alert_connection(
}
}
Err(broadcast::error::RecvError::Lagged(skipped)) => {
log!(HttpLog::WebSocketLaged(skipped));
log!(HttpLog::WebSocketLagged(skipped));
continue;
}
Err(broadcast::error::RecvError::Closed) => {

90
net-guardia/src/web/websocket/drop_websocket.rs Normal file
View File

@ -0,0 +1,90 @@
use actix_web::{web, HttpRequest, HttpResponse, Result};
use actix_ws::{handle, Message, MessageStream, Session};
use futures_util::StreamExt;
use macros::log;
use tokio::sync::broadcast;
use crate::core::ebpf::drop_monitor::{DropMonitor, DropEventMessage};
use crate::model::error::http::HttpError;
use crate::model::error::misc::MiscError;
use crate::model::log::http::HttpLog;
pub async fn websocket_drops(
req: HttpRequest,
body: web::Payload,
monitor: web::Data<DropMonitor>,
) -> Result<HttpResponse> {
let (response, session, msg_stream) = handle(&req, body)?;
let broadcast_rx = monitor.subscribe();
actix_web::rt::spawn(async move {
handle_drop_connection(session, msg_stream, broadcast_rx).await;
});
Ok(response)
}
async fn handle_drop_connection(
mut session: Session,
mut msg_stream: MessageStream,
mut broadcast_rx: broadcast::Receiver<DropEventMessage>,
) {
loop {
tokio::select! {
msg_result = msg_stream.next() => {
if !handle_client_message(&mut session, msg_result).await {
break;
}
},
broadcast_result = broadcast_rx.recv() => {
match broadcast_result {
Ok(event) => {
if !send_drop_event(&mut session, &event).await {
break;
}
}
Err(broadcast::error::RecvError::Lagged(skipped)) => {
log!(HttpLog::WebSocketLagged(skipped));
continue;
}
Err(broadcast::error::RecvError::Closed) => {
break;
}
}
},
}
}
let _ = session.close(None).await;
}
async fn handle_client_message(
session: &mut Session,
msg_result: Option<Result<Message, actix_ws::ProtocolError>>,
) -> bool {
match msg_result {
Some(Ok(Message::Text(_))) => true,
Some(Ok(Message::Ping(bytes))) => session.pong(&bytes).await.is_ok(),
Some(Ok(Message::Close(reason))) => {
let _ = (session.clone()).close(reason).await;
false
}
Some(Err(err)) => {
log!(HttpError::WebSocketError(err));
false
}
None => false,
_ => true,
}
}
async fn send_drop_event(session: &mut Session, event: &DropEventMessage) -> bool {
match serde_json::to_string(event) {
Ok(json) => session.text(json).await.is_ok(),
Err(err) => {
log!(MiscError::SerializeError(err));
false
}
}
}

4
net-guardia/src/web/websocket/flow_websocket.rs
View File

@ -3,12 +3,10 @@ use std::time::Duration;
use actix_web::{web, HttpRequest, HttpResponse};
use actix_ws::Message;
use futures_util::StreamExt;
use macros::log;
use tokio::time::interval;
use crate::core::infrastructure::statistics::FlowStatistics;
use crate::model::flow_stats::FlowSubscription;
use crate::model::log::http::HttpLog;
/// Default subscription: all flows, no filter, 5 second interval
fn default_subscription() -> FlowSubscription {
@ -46,7 +44,6 @@ pub async fn flow_stats_ws(
msg = msg_stream.next() => {
match msg {
Some(Ok(Message::Text(text))) => {
// Client sends subscription query as JSON
match serde_json::from_str::<FlowSubscription>(&text) {
Ok(new_sub) => {
let new_interval = new_sub.interval_secs.unwrap_or(5).max(1);
@ -54,7 +51,6 @@ pub async fn flow_stats_ws(
subscription.interval_secs = Some(new_interval);
ticker = interval(Duration::from_secs(new_interval));
// Send immediate response with new filter
let flows = stats.get_filtered_flows(&subscription);
if let Ok(json) = serde_json::to_string(&flows) {
if session.text(json).await.is_err() {

3
net-guardia/src/web/websocket/health_websocket.rs
View File

@ -46,7 +46,7 @@ async fn handle_health_connection(
}
}
Err(broadcast::error::RecvError::Lagged(skipped)) => {
log!(HttpLog::WebSocketLaged(skipped));
log!(HttpLog::WebSocketLagged(skipped));
continue;
}
Err(broadcast::error::RecvError::Closed) => {
@ -65,7 +65,6 @@ async fn handle_client_message(
msg_result: Option<Result<Message, actix_ws::ProtocolError>>,
) -> bool {
match msg_result {
// Text messages are intentionally ignored; no client commands are supported
Some(Ok(Message::Text(_))) => true,
Some(Ok(Message::Ping(bytes))) => session.pong(&bytes).await.is_ok(),
Some(Ok(Message::Close(reason))) => {

1
net-guardia/src/web/websocket/mod.rs
View File

@ -1,3 +1,4 @@
pub mod alert_websocket;
pub mod drop_websocket;
pub mod flow_websocket;
pub mod health_websocket;