eguard: clear trivial code

chriskaliX · Nov 13, 2023 · 08ffe8c · 08ffe8c
1 parent dadec54
commit 08ffe8c
Show file tree

Hide file tree

Showing 2 changed files with 3 additions and 22 deletions.
diff --git a/plugins/eguard/config.yaml b/plugins/eguard/config.yaml
@@ -18,9 +18,9 @@ tc:
     action: LOG  # DENY/LOG
     level: INFO
 dns:
-  # - name: "eguard_egress_test_dns"
-  #   action: DENY
-  #   domain: "grpc.hades.store"
+  - name: "eguard_egress_test_dns"
+    action: DENY
+    domain: "grpc.hades.store"
   - name: "eguard_egress_test_dns_1"
     action: DENY
     domain: "*.baidu.com"
diff --git a/plugins/eguard/src/bpf/eguard.bpf.c b/plugins/eguard/src/bpf/eguard.bpf.c
@@ -19,24 +19,5 @@ int hades_ingress(struct __sk_buff *skb)
     return tc_probe(skb, true);
 }
 
-SEC("kprobe/udp_sendmsg")
-int BPF_KPROBE(kprobe_udp_sendmsg)
-{
-    struct sock *sk = (struct sock *)PT_REGS_PARM1(ctx);
-    struct msghdr *msg = (struct msghdr *)PT_REGS_PARM2(ctx);
-    struct inet_sock *inet = (struct inet_sock *) sk;
-    struct sockaddr_in *sin = READ_KERN(msg->msg_name);
-
-    u16 dport;
-    if (sin)
-        dport = READ_KERN(sin->sin_port);
-    else
-        dport = READ_KERN(inet->inet_dport);    
-    if (dport != 13568 && dport != 59668 && dport != 0)
-        return 0;
-    return dns_resolve(ctx, sk, msg);
-}
-
-
 // DNS-based packet drop
 char LICENSE[] SEC("license") = "GPL";