增加 -l 选项打印 iptales 规则

cap.c

@@ -203,9 +203,10 @@ void usage()
     puts("MAIL: aixiao@aixiao.me");
     puts("Date: 20241024");
     puts("  Usage: denyip [-d] [-i <interface>] [-s <start|stop>] [-h|-?]");
-    puts("      -d      Daemon mode");
-    puts("      -i      interface (default eth0)");
-    puts("      -s      regular signal (default start|stop)                        ");
+    puts("      -d --daemon         Daemon mode");
+    puts("      -i --interface      interface (default eth0)");
+    puts("      -l                  print iptables rule");
+    puts("      -s --signal         regular signal (default start|stop)                        ");
     puts("                              start Enable Iptables rule");
     puts("                              stop  Disable Iptables rule");
     puts("      -h|-?               Help Information");
@@ -269,8 +270,19 @@ int main(int argc, char **argv)
     memset(&device, 0, sizeof(device));
     memset(errbuf, 0, PCAP_ERRBUF_SIZE);
 
+    int longindex = 0;
+    char optstring[] = "di:s:lh?";
+    static struct option longopts[] = {
+        { "interface", required_argument, 0, 'i' },
+        { "signal", required_argument, 0, 's' },
+        { "daemon", no_argument, 0, 'd' },
+        { "l", no_argument, 0, 'l' },
+        { "help", no_argument, 0, 'h' },
+        { "?", no_argument, 0, '?' },
+        { 0, 0, 0, 0 }
+    };
 
-    while ((opt = getopt(argc, argv, "di:s:h?")) != -1) {
+    while (-1 != (opt = getopt_long(argc, argv, optstring, longopts, &longindex))) {
         switch (opt) {
         case 'd':
             if (daemon(1, 1)) {
@@ -280,6 +292,10 @@ int main(int argc, char **argv)
         case 'i':
             strcpy(interface, optarg);
             break;
+        case 'l':
+            system("iptables -L -v -n --line-numbers");
+            exit(0);
+            break;
         case 's':
             if (strcmp(optarg, "start") == 0) {
                 memset(Ipset_Command, 0, BUFFER);
@@ -319,6 +335,11 @@ int main(int argc, char **argv)
         }
     }
 
+    if (strcmp(interface, "eth0") != 0)
+    {
+
+    }
+
     
     // 创建共享内存
     shmid = shmget(SHM_KEY, SHM_SIZE, IPC_CREAT | 0666);

cap.h

@@ -15,6 +15,7 @@
 #include <sys/ipc.h>
 #include <sys/shm.h>
 #include <unistd.h>
+#include <getopt.h>
 #include <string.h>
 
 #include "ip2region/ip2region.h"