update dns2tcp.c

1 files changed, 25 insertions, 0 deletions

diff --git a/dns2tcp.c b/dns2tcp.c
index 7267f69..50a5f14 100644
--- a/dns2tcp.c
+++ b/dns2tcp.c
@@ -3,6 +3,8 @@
 #include <uv.h>
 #undef _GNU_SOURCE
 
+static bool g_verbose = false;
+
 static void print_command_help(void) {
     printf("usage: dns2tcp <-L LISTEN_ADDR> <-R REMOTE_ADDR> [-vVh]\n"
            " -L <ip#port>           udp listen address, it is required\n"
@@ -14,6 +16,29 @@ static void print_command_help(void) {
     );
 }
 
+static void parse_command_args(int argc, char *argv[]) {
+    opterr = 0;
+    int shortopt = -1;
+    char *bindaddr_optarg = NULL;
+    char *servaddr_optarg = NULL;
+    const char *optstr = ":L:R:vVh";
+    while ((shortopt = getopt(argc, argv, optstr)) != -1) {
+        switch (shortopt) {
+            case 'L':
+                bindaddr_optarg = optarg;
+                break;
+            case 'R':
+                servaddr_optarg = optarg;
+            case 'v':
+                g_verbose = true;
+        }
+    }
+    return;
+PRINT_HELP_AND_EXIT:
+    print_command_help();
+    exit(1);
+}
+
 int main() {
     print_command_help();
     return 0;