quickjs-tart

quickjs-based runtime for wallet-core logic
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fuzz_compile.c (2782B)

      1 /* Copyright 2020 Google Inc.
      2 
      3  Licensed under the Apache License, Version 2.0 (the "License");
      4  you may not use this file except in compliance with the License.
      5  You may obtain a copy of the License at
      6 
      7  http://www.apache.org/licenses/LICENSE-2.0
      8 
      9  Unless required by applicable law or agreed to in writing, software
     10  distributed under the License is distributed on an "AS IS" BASIS,
     11  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     12  See the License for the specific language governing permissions and
     13  limitations under the License.
     14  */
     15 
     16 #include "quickjs.h"
     17 #include "quickjs-libc.h"
     18 #include "cutils.h"
     19 #include "fuzz/fuzz_common.h"
     20 
     21 #include <stdint.h>
     22 #include <stdio.h>
     23 
     24 
     25 int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
     26     if (size == 0)
     27         return 0;
     28 
     29     JSRuntime *rt = JS_NewRuntime();
     30     JSContext *ctx = JS_NewContext(rt);
     31     test_one_input_init(rt, ctx);
     32 
     33     uint8_t *null_terminated_data = malloc(size + 1);
     34     memcpy(null_terminated_data, data, size);
     35     null_terminated_data[size] = 0;
     36 
     37     JSValue obj = JS_Eval(ctx, (const char *)null_terminated_data, size, "<none>", JS_EVAL_FLAG_COMPILE_ONLY | JS_EVAL_TYPE_MODULE);
     38     free(null_terminated_data);
     39     //TODO target with JS_ParseJSON
     40     if (JS_IsException(obj)) {
     41         js_std_free_handlers(rt);
     42         JS_FreeValue(ctx, obj);
     43         JS_FreeContext(ctx);
     44         JS_FreeRuntime(rt);
     45         return 0;
     46     }
     47     obj = js_std_await(ctx, obj);
     48     size_t bytecode_size;
     49     uint8_t* bytecode = JS_WriteObject(ctx, &bytecode_size, obj, JS_WRITE_OBJ_BYTECODE);
     50     JS_FreeValue(ctx, obj);
     51     if (!bytecode) {
     52         js_std_free_handlers(rt);
     53         JS_FreeContext(ctx);
     54         JS_FreeRuntime(rt);
     55         return 0;
     56     }
     57     obj = JS_ReadObject(ctx, bytecode, bytecode_size, JS_READ_OBJ_BYTECODE);
     58     js_free(ctx, bytecode);
     59     if (JS_IsException(obj)) {
     60         js_std_free_handlers(rt);
     61         JS_FreeContext(ctx);
     62         JS_FreeRuntime(rt);
     63         return 0;
     64     }
     65     reset_nbinterrupts();
     66     /* this is based on
     67      * js_std_eval_binary(ctx, bytecode, bytecode_size, 0);
     68      * modified so as not to exit on JS exception
     69      */
     70     JSValue val;
     71     if (JS_VALUE_GET_TAG(obj) == JS_TAG_MODULE) {
     72         if (JS_ResolveModule(ctx, obj) < 0) {
     73             JS_FreeValue(ctx, obj);
     74             js_std_free_handlers(rt);
     75             JS_FreeContext(ctx);
     76             JS_FreeRuntime(rt);
     77             return 0;
     78         }
     79         js_module_set_import_meta(ctx, obj, FALSE, TRUE);
     80     }
     81     val = JS_EvalFunction(ctx, obj);
     82     if (JS_IsException(val)) {
     83         js_std_dump_error(ctx);
     84     } else {
     85         js_std_loop(ctx);
     86     }
     87     JS_FreeValue(ctx, val);
     88     js_std_free_handlers(rt);
     89     JS_FreeContext(ctx);
     90     JS_FreeRuntime(rt);
     91 
     92     return 0;
     93 }