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| author | Loïc Blot <nerzhul@users.noreply.github.com> | 2017-05-08 20:43:03 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2017-05-08 20:43:03 +0200 |
| commit | c07c642ab091b7250ecdc5defee1fec26ba73dc4 (patch) | |
| tree | 7b84adc4330107416b3a0aee3d4a6b61bb920137 /src/script/lua_api/l_mapgen.cpp | |
| parent | 5e04f1a3357a618bed6d36b6a7439279b758fc8e (diff) | |
| download | minetest-c07c642ab091b7250ecdc5defee1fec26ba73dc4.tar.gz minetest-c07c642ab091b7250ecdc5defee1fec26ba73dc4.tar.bz2 minetest-c07c642ab091b7250ecdc5defee1fec26ba73dc4.zip | |
read_schematic_replacements: ensure fields are strings (#5726)
* read_schematic_replacements: ensure fields are strings
add a type check before reading strings on read_schematic_replacements deserializer
* throw LuaError instead of asserting the whole client
Diffstat (limited to 'src/script/lua_api/l_mapgen.cpp')
| -rw-r--r-- | src/script/lua_api/l_mapgen.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/script/lua_api/l_mapgen.cpp b/src/script/lua_api/l_mapgen.cpp index 6d3171df9..32eb7af84 100644 --- a/src/script/lua_api/l_mapgen.cpp +++ b/src/script/lua_api/l_mapgen.cpp @@ -325,14 +325,22 @@ void read_schematic_replacements(lua_State *L, int index, StringMap *replace_nam if (lua_istable(L, -1)) { // Old {{"x", "y"}, ...} format lua_rawgeti(L, -1, 1); + if (!lua_isstring(L, -1)) + throw LuaError("schematics: replace_from field is not a string"); replace_from = lua_tostring(L, -1); lua_pop(L, 1); lua_rawgeti(L, -1, 2); + if (!lua_isstring(L, -1)) + throw LuaError("schematics: replace_to field is not a string"); replace_to = lua_tostring(L, -1); lua_pop(L, 1); } else { // New {x = "y", ...} format + if (!lua_isstring(L, -2)) + throw LuaError("schematics: replace_from field is not a string"); replace_from = lua_tostring(L, -2); + if (!lua_isstring(L, -1)) + throw LuaError("schematics: replace_to field is not a string"); replace_to = lua_tostring(L, -1); } |