extcap: add command line debug function to extcap-base.

This function is helpful to debug the interaction between the
calling UI and the extcap itself.

All extcaps have been changed accordingly.

Change-Id: I358caf4c50797501672bf77fdd91f7276897078c
Reviewed-on: https://code.wireshark.org/review/22806
Reviewed-by: Roland Knall <rknall@gmail.com>
Petri-Dish: Dario Lombardo <lomato@gmail.com>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Dario Lombardo <lomato@gmail.com>

extcap/androiddump.c

@@ -2753,6 +2753,8 @@ int main(int argc, char **argv) {
     }
 #endif  /* _WIN32 */
 
+    extcap_cmdline_debug(argv, argc);
+
     if (extcap_conf->do_list_interfaces)
         register_interfaces(extcap_conf, adb_server_ip, adb_server_tcp_port);
 

extcap/ciscodump.c

@@ -521,7 +521,6 @@ int main(int argc, char **argv)
 {
 	int result;
 	int option_idx = 0;
-	int i;
 	char* remote_host = NULL;
 	guint16 remote_port = 22;
 	char* remote_username = NULL;
@@ -580,9 +579,6 @@ int main(int argc, char **argv)
 		goto end;
 	}
 
-	for (i = 0; i < argc; i++)
-		g_debug("%s ", argv[i]);
-
 	while ((result = getopt_long(argc, argv, ":", longopts, &option_idx)) != -1) {
 
 		switch (result) {
@@ -660,6 +656,8 @@ int main(int argc, char **argv)
 		}
 	}
 
+	extcap_cmdline_debug(argv, argc);
+
 	if (optind != argc) {
 		g_warning("Unexpected extra option: %s", argv[optind]);
 		goto end;

extcap/extcap-base.c

@@ -332,6 +332,16 @@ void extcap_help_add_header(extcap_parameters * extcap, char * help_header)
     extcap_help_add_option(extcap, "--debug", "print additional messages");
 }
 
+void extcap_cmdline_debug(char** ar, const unsigned n)
+{
+    GString* cmdline = g_string_new("cmdline: ");
+    unsigned i;
+    for (i = 0; i < n; i++)
+        g_string_append_printf(cmdline, "%s ", ar[i]);
+    g_debug("%s", cmdline->str);
+    g_string_free(cmdline, TRUE);
+}
+
 /*
  * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
  *

extcap/extcap-base.h

@@ -105,7 +105,7 @@ void extcap_base_cleanup(extcap_parameters ** extcap);
 void extcap_help_add_header(extcap_parameters * extcap, char * help_header);
 void extcap_help_add_option(extcap_parameters * extcap, const char * help_option_name, const char * help_optionn_desc);
 void extcap_help_print(extcap_parameters * extcap);
-
+void extcap_cmdline_debug(char** ar, const unsigned n);
 void extcap_base_help(void);
 
 #endif

extcap/randpktdump.c

@@ -136,7 +136,6 @@ int main(int argc, char *argv[])
 	int produce_type = -1;
 	randpkt_example	*example;
 	wtap_dumper* savedump;
-	int i;
 	int ret = EXIT_FAILURE;
 
 #ifdef _WIN32
@@ -180,9 +179,6 @@ int main(int argc, char *argv[])
 	attach_parent_console();
 #endif  /* _WIN32 */
 
-	for (i = 0; i < argc; i++)
-		g_debug("%s ", argv[i]);
-
 	while ((result = getopt_long(argc, argv, ":", longopts, &option_idx)) != -1) {
 		switch (result) {
 		case OPT_VERSION:
@@ -242,6 +238,8 @@ int main(int argc, char *argv[])
 		}
 	}
 
+	extcap_cmdline_debug(argv, argc);
+
 	if (optind != argc) {
 		g_warning("Invalid option: %s", argv[optind]);
 		goto end;

extcap/sshdump.c

@@ -330,7 +330,6 @@ int main(int argc, char **argv)
 {
 	int result;
 	int option_idx = 0;
-	int i;
 	char* remote_host = NULL;
 	guint16 remote_port = 22;
 	char* remote_username = NULL;
@@ -479,8 +478,7 @@ int main(int argc, char **argv)
 		}
 	}
 
-	for (i = 0; i < argc; i++)
+	extcap_cmdline_debug(argv, argc);
-		g_debug("%s", argv[i]);
 
 	if (optind != argc) {
 		g_warning("Unexpected extra option: %s", argv[optind]);

extcap/udpdump.c

@@ -441,6 +441,8 @@ int main(int argc, char *argv[])
 		}
 	}
 
+	extcap_cmdline_debug(argv, argc);
+
 	if (optind != argc) {
 		g_warning("Unexpected extra option: %s", argv[optind]);
 		goto end;