utils: nfsynproxy: fix error while compiling the BPF filter
Fix the following error while running nfsynproxy here:
pcap_compile: not-yet-activated pcap_t passed to pcap_compile
According to what I have read, we have to compile the filter
once the pcap_t handle has been activated.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
diff --git a/utils/nfsynproxy.c b/utils/nfsynproxy.c
index 9b6de93..baedc92 100644
--- a/utils/nfsynproxy.c
+++ b/utils/nfsynproxy.c
@@ -109,20 +109,20 @@
goto err2;
}
- if (pcap_compile(ph, &fp, "src host 127.0.0.1 and tcp and src port 80",
- 1, PCAP_NETMASK_UNKNOWN) == -1) {
- pcap_perror(ph, "pcap_compile");
- goto err2;
- }
-
if (pcap_setfilter(ph, &fp) == -1) {
pcap_perror(ph, "pcap_setfilter");
- goto err3;
+ goto err2;
}
if (pcap_activate(ph) != 0) {
pcap_perror(ph, "pcap_activate");
- goto err3;
+ goto err2;
+ }
+
+ if (pcap_compile(ph, &fp, "src host 127.0.0.1 and tcp and src port 80",
+ 1, PCAP_NETMASK_UNKNOWN) == -1) {
+ pcap_perror(ph, "pcap_compile");
+ goto err2;
}
fd = socket(AF_INET, SOCK_STREAM, 0);
