Added validation of mapgen weight

CleverRaven · Aug 17, 2024 · af89099 · af89099
1 parent a83322d
commit af89099
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/src/mapgen.cpp b/src/mapgen.cpp
@@ -761,6 +761,14 @@ load_mapgen_function( const JsonObject &jio, const std::string &id_base, const p
                       const point &total )
 {
     dbl_or_var weight = get_dbl_or_var( jio, "weight", false,  1000 );
+    if( weight.min.is_constant() && ( weight.min.constant() < 0 ||
+                                      weight.min.constant() >= 2147483648 ) ) {
+        jio.throw_error_at( "weight", "min value out of bounds (0 - max int)" );
+    }
+    if( weight.pair && weight.max.is_constant() && ( weight.max.constant() < 0 ||
+            weight.max.constant() >= 2147483648 ) ) {
+        jio.throw_error_at( "weight", "max value out of bounds (0 - max int)" );
+    }
 
     if( jio.get_bool( "disabled", false ) ) {
         jio.allow_omitted_members();