Exosphere: Add API for retrieving versioning info.

exosphere/src/configitem.c

@@ -9,6 +9,7 @@
 #include "utils.h"
 #include "masterkey.h"
 #include "exocfg.h"
+#include "version.h"
 
 static bool g_battery_profile = false;
 
@@ -132,6 +133,10 @@ uint32_t configitem_get(ConfigItem item, uint64_t *p_outvalue) {
                 result = 2;
             }
             break;
+        case CONFIGITEM_EXOSPHERE_VERSION:
+            /* UNOFFICIAL: Gets information about the current exosphere version. */
+            *p_outvalue = (EXOSPHERE_RELEASE_VERSION_MAJOR << 24) | (EXOSPHERE_RELEASE_VERSION_MINOR << 16) | (exosphere_get_target_firmware() << 8) | (mkey_get_revision() << 0);
+            break;
         default:
             result = 2;
             break;