1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
// Copyright 2016 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
////////////////////////////////////////////////////////////////////////////////
#include <stddef.h>
#include <stdint.h>
#include <vector>
#include "archive.h"
struct Buffer {
const uint8_t *buf;
size_t len;
};
ssize_t reader_callback(struct archive *a, void *client_data,
const void **block) {
Buffer *buffer = reinterpret_cast<Buffer *>(client_data);
*block = buffer->buf;
ssize_t len = buffer->len;
buffer->len = 0;
return len;
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *buf, size_t len) {
int ret;
ssize_t r;
struct archive *a = archive_read_new();
archive_read_support_filter_all(a);
archive_read_support_format_all(a);
Buffer buffer = {buf, len};
archive_read_open(a, &buffer, NULL, reader_callback, NULL);
std::vector<uint8_t> data_buffer(getpagesize(), 0);
struct archive_entry *entry;
while(1) {
ret = archive_read_next_header(a, &entry);
if (ret == ARCHIVE_EOF || ret == ARCHIVE_FATAL)
break;
if (ret == ARCHIVE_RETRY)
continue;
while ((r = archive_read_data(a, data_buffer.data(),
data_buffer.size())) > 0)
;
if (r == ARCHIVE_FATAL)
break;
}
archive_read_free(a);
return 0;
}
|
