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/udpdump.c b/extcap/udpdump.c
index c1636b7c94..4539918fdd 100644
--- a/extcap/udpdump.c
+++ b/extcap/udpdump.c
@@ -47,6 +47,7 @@
 #include <wsutil/strtoi.h>
 #include <wsutil/inet_addr.h>
 #include <wsutil/filesystem.h>
+#include <wsutil/privileges.h>
 
 #include <cli_main.h>
 
@@ -358,6 +359,7 @@ static void run_listener(const char* fifo, const guint16 port, const char* proto
 
 int main(int argc, char *argv[])
 {
+	char* init_progfile_dir_error;
 	int option_idx = 0;
 	int result;
 	guint16 port = 0;
@@ -371,6 +373,22 @@ int main(int argc, char *argv[])
 	WSADATA wsaData;
 #endif  /* _WIN32 */
 
+	/*
+	 * 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("udpdump.html");
 	extcap_base_set_util_info(extcap_conf, argv[0], UDPDUMP_VERSION_MAJOR, UDPDUMP_VERSION_MINOR, UDPDUMP_VERSION_RELEASE,
 		help_url);