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Always skip the loopback interface, also in "-a" mode 

Signed-off-by: DL6ER <dl6er@dl6er.de>
This commit is contained in:
DL6ER 2023-05-16 04:49:19 +02:00
parent 1bc05b9aff
commit 4387ff21ee
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GPG Key ID: 00135ACBD90B28DD
1 changed files with 17 additions and 13 deletions
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30
src/tools/arp-scan.c
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@ -346,10 +346,6 @@ static void *arp_scan_iface(void *args)
// Set interface name as thread name
prctl(PR_SET_NAME, iface, 0, 0, 0);
// Get interface IPv4 address
memcpy(&thread_data->src_addr, ifa->ifa_addr, sizeof(thread_data->src_addr));
inet_ntop(AF_INET, &thread_data->src_addr.sin_addr, thread_data->ipstr, INET_ADDRSTRLEN);
// Get interface netmask
memcpy(&thread_data->mask, ifa->ifa_netmask, sizeof(thread_data->mask));
@ -547,16 +543,24 @@ int run_arp_scan(const bool scan_all)
{
thread_data[tid].ifa = tmp;
thread_data[tid].iface = tmp->ifa_name;
// Create thread
if(pthread_create(&scanthread[tid], &attr, arp_scan_iface, &thread_data[tid] ) != 0)
{
printf("Unable to launch thread for interface %s, skipping...\n",
tmp->ifa_name);
continue;
}
// Increase thread ID
tid++;
// Get interface IPv4 address
memcpy(&thread_data[tid].src_addr, tmp->ifa_addr, sizeof(thread_data[tid].src_addr));
inet_ntop(AF_INET, &thread_data[tid].src_addr.sin_addr, thread_data[tid].ipstr, INET_ADDRSTRLEN);
// Always skip the loopback interface
if(thread_data[tid].src_addr.sin_addr.s_addr != htonl(INADDR_LOOPBACK))
{
// Create thread
if(pthread_create(&scanthread[tid], &attr, arp_scan_iface, &thread_data[tid] ) != 0)
{
printf("Unable to launch thread for interface %s, skipping...\n",
tmp->ifa_name);
}
// Increase thread ID
tid++;
}
}
// Advance to the next interface