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[lua] Secure io.popen() access (and enable popen on Linux)

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This commit is contained in:
David Capello 2024-04-10 12:00:17 -03:00
parent 6a12c7014d
commit d886e20f6c
3 changed files with 21 additions and 3 deletions
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9
src/app/script/engine.cpp
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@ -1,5 +1,5 @@
// Aseprite
// Copyright (C) 2018-2023 Igara Studio S.A.
// Copyright (C) 2018-2024 Igara Studio S.A.
// Copyright (C) 2001-2018 David Capello
//
// This program is distributed under the terms of
@ -246,6 +246,13 @@ Engine::Engine()
lua_setfield(L, -2, "open");
lua_pop(L, 1);
// Wrap io.popen()
lua_getglobal(L, "io");
lua_getfield(L, -1, "popen");
lua_pushcclosure(L, secure_os_execute, 1);
lua_setfield(L, -2, "popen");
lua_pop(L, 1);
// Wrap os.execute()
lua_getglobal(L, "os");
lua_getfield(L, -1, "execute");

3
src/app/script/security.cpp
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@ -1,5 +1,5 @@
// Aseprite
// Copyright (C) 2019-2023 Igara Studio S.A.
// Copyright (C) 2019-2024 Igara Studio S.A.
// Copyright (C) 2018 David Capello
//
// This program is distributed under the terms of
@ -94,6 +94,7 @@ int secure_io_open(lua_State* L)
return 1;
}
// Used for os.execute() and io.popen()
int secure_os_execute(lua_State* L)
{
int n = lua_gettop(L);

12
third_party/CMakeLists.txt vendored
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@ -1,5 +1,5 @@
# Aseprite
# Copyright (C) 2021-2023 Igara Studio S.A.
# Copyright (C) 2021-2024 Igara Studio S.A.
# Copyright (C) 2001-2018 David Capello
include_directories(.)
@ -195,12 +195,22 @@ if(ENABLE_SCRIPTING)
lua/lstrlib.c
lua/ltablib.c
lua/lutf8lib.c)
if(WIN32)
target_compile_definitions(lua PUBLIC LUA_USE_WINDOWS=1)
elseif(APPLE)
target_compile_definitions(lua PUBLIC LUA_USE_MACOSX=1)
elseif(UNIX)
target_compile_definitions(lua PUBLIC LUA_USE_LINUX=1)
endif()
target_compile_definitions(lua PUBLIC LUA_FLOORN2I=1)
target_compile_definitions(lualib PRIVATE HAVE_SYSTEM)
target_include_directories(lua PUBLIC lua)
target_include_directories(lauxlib PUBLIC lua)
target_include_directories(lualib PUBLIC lua)
target_link_libraries(lauxlib lua)
target_link_libraries(lualib lua)
# ixwebsocket
if(ENABLE_WEBSOCKET)