Add function to return version number at run-time

For use by plugins using libwireshark to check compatibility.

Change-Id: I66a9d41644da7efce01cbed30d2a1f76fbc3754d
Reviewed-on: https://code.wireshark.org/review/23378
Petri-Dish: João Valverde <j@v6e.pt>
Reviewed-by: João Valverde <j@v6e.pt>

epan/epan.c

@@ -32,6 +32,7 @@
 
 #include <glib.h>
 
+#include <ws_version_info.h>
 #include <wsutil/report_message.h>
 
 #include <epan/exceptions.h>
@@ -96,6 +97,12 @@ epan_get_version(void) {
 	return VERSION;
 }
 
+void
+epan_get_version_number(int *major, int *minor, int *micro)
+{
+	get_ws_version_number(major, minor, micro);
+}
+
 #if defined(_WIN32)
 // Libgcrypt prints all log messages to stderr by default. This is noisier
 // than we would like on Windows. In particular slow_gatherer tends to print

epan/epan.h

@@ -158,6 +158,8 @@ WS_DLL_PUBLIC void epan_free(epan_t *session);
 WS_DLL_PUBLIC const gchar*
 epan_get_version(void);
 
+WS_DLL_PUBLIC void epan_get_version_number(int *major, int *minor, int *micro);
+
 /**
  * Set/unset the tree to always be visible when epan_dissect_init() is called.
  * This state change sticks until cleared, rather than being done per function call.

ws_version_info.c

@@ -383,6 +383,17 @@ get_ws_vcs_version_info(void)
 #endif
 }
 
+void
+get_ws_version_number(int *major, int *minor, int *micro)
+{
+	if (major)
+		*major = VERSION_MAJOR;
+	if (minor)
+		*minor = VERSION_MINOR;
+	if (micro)
+		*micro = VERSION_MICRO;
+}
+
 /*
  * Editor modelines  -  http://www.wireshark.org/tools/modelines.html
  *

ws_version_info.h

@@ -66,6 +66,11 @@ void show_version(const gchar *prog_name, GString *comp_info_str, GString *runti
  */
 const char *get_ws_vcs_version_info(void);
 
+/*
+ * Return version number as integers.
+ */
+void get_ws_version_number(int *major, int *minor, int *micro);
+
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */