1 // Copyright 2021 Google LLC
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not
4 // use this file except in compliance with the License. You may obtain a copy of
5 // the License at
6 //
7 // https://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, WITHOUT
11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
12 // License for the specific language governing permissions and limitations under
13 // the License.
14
15 #include "dice/cbor_reader.h"
16 #include "fuzzer/FuzzedDataProvider.h"
17
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)18 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
19 int64_t signed_int;
20 uint64_t unsigned_int;
21 size_t sz;
22 const uint8_t* ptr;
23 const char* str;
24 CborIn in;
25 CborIn peeker;
26
27 CborInInit(data, size, &in);
28
29 do {
30 peeker = in;
31 CborReadInt(&peeker, &signed_int);
32
33 peeker = in;
34 CborReadUint(&peeker, &unsigned_int);
35
36 peeker = in;
37 CborReadBstr(&peeker, &sz, &ptr);
38
39 peeker = in;
40 CborReadTstr(&peeker, &sz, &str);
41
42 peeker = in;
43 CborReadArray(&peeker, &sz);
44
45 peeker = in;
46 CborReadMap(&peeker, &sz);
47
48 peeker = in;
49 CborReadTag(&peeker, &unsigned_int);
50
51 peeker = in;
52 CborReadFalse(&peeker);
53
54 peeker = in;
55 CborReadTrue(&peeker);
56
57 peeker = in;
58 CborReadNull(&peeker);
59
60 if (CborReadSkip(&in) != CBOR_READ_RESULT_OK) {
61 // Cannot progress futher with this buffer.
62 break;
63 }
64 } while (!CborInAtEnd(&in));
65
66 return 0;
67 }
68