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Add minetest.safe_write_file() to script API
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@ -2380,6 +2380,10 @@ Strings that need to be translated can contain several escapes, preceded by `@`.
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* nil: return all entries,
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* true: return only subdirectory names, or
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* false: return only file names.
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* `minetest.safe_file_write(path, content)`: returns boolean indicating success
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* Replaces contents of file at path with new contents in a safe (atomic) way.
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Use this instead of below code when writing e.g. database files:
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`local f = io.open(path, "wb"); f:write(content); f:close()`
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* `minetest.get_version()`: returns a table containing components of the
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engine version. Components:
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* `project`: Name of the project, eg, "Minetest"
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@ -357,6 +357,23 @@ int ModApiUtil::l_get_dir_list(lua_State *L)
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return 1;
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}
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// safe_file_write(path, content)
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int ModApiUtil::l_safe_file_write(lua_State *L)
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{
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NO_MAP_LOCK_REQUIRED;
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const char *path = luaL_checkstring(L, 1);
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size_t size;
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const char *content = luaL_checklstring(L, 2, &size);
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CHECK_SECURE_PATH(L, path, true);
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bool ret = fs::safeWriteToFile(path, std::string(content, size));
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lua_pushboolean(L, ret);
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return 1;
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}
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// request_insecure_environment()
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int ModApiUtil::l_request_insecure_environment(lua_State *L)
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{
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NO_MAP_LOCK_REQUIRED;
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@ -476,6 +493,7 @@ void ModApiUtil::Initialize(lua_State *L, int top)
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API_FCT(mkdir);
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API_FCT(get_dir_list);
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API_FCT(safe_file_write);
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API_FCT(request_insecure_environment);
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@ -80,6 +80,9 @@ private:
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// get_dir_list(path, is_dir)
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static int l_get_dir_list(lua_State *L);
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// safe_file_write(path, content)
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static int l_safe_file_write(lua_State *L);
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// request_insecure_environment()
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static int l_request_insecure_environment(lua_State *L);
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