client.c: Added "--nic" option

The client now can be bound to a specific network interface device by using
the "--nic=device_name" ("-n" for short) option, where device_name is the
NIC name (e.g. eth0, wlan0).

Signed-off-by: Erik Alexandre Pucci <eap08@c3sl.ufpr.br>
Acked-by: Ricardo Tavares de Oliveira <rto07@c3sl.ufpr.br>
Signed-off-by: Danilo K. S. Yorinori <danilok@c3sl.ufpr.br>

src/client.c

@@ -121,6 +121,7 @@ void print_help(void)
     ERROR("-U, --puid=userid     Proxy user id\n");
     ERROR("-w, --ppasswd=pswd    Proxy password\n");
     ERROR("-h, --help            Show this help\n");
+    ERROR("-n, --nic=eth0        Network interface to be bound\n");
 }
 
 /*----------------------------------------------------------------------------
@@ -152,14 +153,15 @@ int verify_parameters(int argc, char **argv, struct soap *soap, char **url,
         {"pport",   required_argument, 0, 'p'},
         {"puid",    required_argument, 0, 'U'},
         {"ppasswd", required_argument, 0, 'w'},
+        {"nic",     required_argument, 0, 'n'},
         {0, 0, 0, 0}
     };
 
     inventory = update = help = invalid_option = 0;
 
     /* Parse command line */
-    while ((option = getopt_long(argc, argv, "hiul:I:H:p:U:w:", long_options,
-                                 &option_index)) != -1)
+    while ((option = getopt_long(argc, argv, "hiul:I:H:p:U:w:n:",
+                                 long_options, &option_index)) != -1)
     {
         switch(option)
         {
@@ -199,6 +201,11 @@ int verify_parameters(int argc, char **argv, struct soap *soap, char **url,
                 /* Print help message */
                 help = 1;
                 break;
+            case 'n':
+                soap->device = malloc(sizeof(char) * strlen(optarg));
+                strcpy(soap->device, optarg);
+                DEBUG("Network interface device \"%s\" used\n", soap->device);
+                break;
             case '?':
                 /* Invalid option(s) passed in command line */
                 invalid_option = 1;