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+/** @file
+ *
+ * Utility definitions
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#ifndef __UTIL_H__
+#define __UTIL_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/* Collect command-line arguments as a string consisting of the arguments,
+ * separated by spaces.
+ */
+char *get_args_as_string(int argc, char **argv, int optindex);
+
+/* Compute the difference between two seconds/microseconds time stamps.
+ * Beware: we're using nanosecond resolution now and function is currently unused
+ */
+void compute_timestamp_diff(gint *diffsec, gint *diffusec,
+ guint32 sec1, guint32 usec1, guint32 sec2, guint32 usec2);
+
+/* Try to figure out if we're remotely connected, e.g. via ssh or
+ Terminal Server, and create a capture filter that matches aspects of the
+ connection. We match the following environment variables:
+
+ SSH_CONNECTION (ssh): <remote IP> <remote port> <local IP> <local port>
+ SSH_CLIENT (ssh): <remote IP> <remote port> <local port>
+ REMOTEHOST (tcsh, others?): <remote name>
+ DISPLAY (x11): [remote name]:<display num>
+ CLIENTNAME (terminal server): <remote name>
+ */
+const char *get_conn_cfilter(void);
+
+/** Check if we're running on a remote connection.
+ * @return TRUE if we're running remotely, FALSE if local.
+ */
+gboolean display_is_remote(void);
+
+/** Get the latest directory in which a file has been opened.
+ *
+ * @return the dirname
+ */
+extern const char *get_last_open_dir(void);
+
+/** Set the latest directory in which a file has been opened.
+ *
+ * @param dirname the dirname
+ */
+extern void set_last_open_dir(const char *dirname);
+
+/** Get the initial directory to use in file open dialogs.
+ *
+ * @return the dirname
+ */
+extern const char *get_open_dialog_initial_dir(void);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __UTIL_H__ */