If you use data_file_url(), you must first call init_progfile_dir().

And if you call init_progfile_dir(), you must call
init_process_policies() before that.

And even if you *don't* use data_file_url(), you might use it in the
future, or you might use other calls to get data file paths, so make
*all* the extcap programs make those calls.

(Yes, this is important on macOS, for example; it may also be important
on Windows.  On other UN*Xes we may just compile in the data file path,
but that's not true on *all* our platforms.)

Change-Id: I99265ed69ec24096884ec067feddd7d7f3855436
Reviewed-on: https://code.wireshark.org/review/32775
Reviewed-by: Guy Harris <guy@alum.mit.edu>

1 files changed, 18 insertions, 0 deletions

diff --git a/extcap/randpktdump.c b/extcap/randpktdump.c
index c31e01ed79..28de98f64f 100644
--- a/extcap/randpktdump.c
+++ b/extcap/randpktdump.c
@@ -17,6 +17,7 @@
 #include "randpkt_core/randpkt_core.h"
 #include <wsutil/strtoi.h>
 #include <wsutil/filesystem.h>
+#include <wsutil/privileges.h>
 
 #include <cli_main.h>
 
@@ -123,6 +124,7 @@ static int list_config(char *interface)
 
 int main(int argc, char *argv[])
 {
+	char* init_progfile_dir_error;
 	int option_idx = 0;
 	int result;
 	guint16 maxbytes = 5000;
@@ -144,6 +146,22 @@ int main(int argc, char *argv[])
 	char* help_url;
 	char* help_header = NULL;
 
+	/*
+	 * Get credential information for later use.
+	 */
+	init_process_policies();
+
+	/*
+	 * Attempt to get the pathname of the directory containing the
+	 * executable file.
+	 */
+	init_progfile_dir_error = init_progfile_dir(argv[0]);
+	if (init_progfile_dir_error != NULL) {
+		g_warning("Can't get pathname of directory containing the captype program: %s.",
+			init_progfile_dir_error);
+		g_free(init_progfile_dir_error);
+	}
+
 	help_url = data_file_url("randpktdump.html");
 	extcap_base_set_util_info(extcap_conf, argv[0], RANDPKTDUMP_VERSION_MAJOR, RANDPKTDUMP_VERSION_MINOR,
 		RANDPKTDUMP_VERSION_RELEASE, help_url);