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Retool the sandbox to disable modules and re-enable print

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This commit is contained in:
K Lange 2021-03-20 22:51:17 +09:00
parent 658eeb6afd
commit 63f4ae8d9b
1 changed files with 6 additions and 2 deletions
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8
tools/sandbox.c
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@ -13,7 +13,11 @@ int main(int argc, char * argv[]) {
/* Disable imports, ensure the system module is inaccessible, disable print */
krk_tableDelete(&vm.system->fields, OBJECT_VAL(S("module_paths")));
krk_tableDelete(&vm.modules, OBJECT_VAL(S("kuroko")));
krk_tableDelete(&vm.builtins->fields, OBJECT_VAL(S("print")));
krk_tableDelete(&vm.modules, OBJECT_VAL(S("os"))); /* Leaks sensitive information */
krk_tableDelete(&vm.modules, OBJECT_VAL(S("fileio"))); /* File access is a big no */
krk_tableDelete(&vm.modules, OBJECT_VAL(S("dis"))); /* Can be used to mess with bytecode and break the VM */
krk_tableDelete(&vm.modules, OBJECT_VAL(S("threading"))); /* Let's just turn that off for now */
krk_tableDelete(&vm.modules, OBJECT_VAL(S("gc"))); /* Lets users stop the garbage collector, so let's turn that off */
/* Set up our module context. */
krk_startModule("__main__");
@ -35,7 +39,7 @@ int main(int argc, char * argv[]) {
result = krk_callSimple(OBJECT_VAL(type->_reprer), 1, 0);
}
if (IS_STRING(result)) {
fprintf(stdout, "%s\n", AS_CSTRING(result));
fprintf(stdout, " => %s\n", AS_CSTRING(result));
}
} else if (krk_currentThread.flags & KRK_THREAD_HAS_EXCEPTION) {
krk_dumpTraceback();