1 // Copyright 2016 The Chromium Authors
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "net/http/http_stream_parser.h"
6
7 #include <stddef.h>
8 #include <stdint.h>
9
10 #include <fuzzer/FuzzedDataProvider.h>
11
12 #include <algorithm>
13 #include <memory>
14 #include <string>
15 #include <vector>
16
17 #include "base/check_op.h"
18 #include "base/memory/ref_counted.h"
19 #include "net/base/io_buffer.h"
20 #include "net/base/net_errors.h"
21 #include "net/base/test_completion_callback.h"
22 #include "net/http/http_request_headers.h"
23 #include "net/http/http_response_info.h"
24 #include "net/log/net_log.h"
25 #include "net/log/test_net_log.h"
26 #include "net/socket/fuzzed_socket.h"
27 #include "net/traffic_annotation/network_traffic_annotation_test_helper.h"
28 #include "url/gurl.h"
29
30 // Fuzzer for HttpStreamParser.
31 //
32 // |data| is used to create a FuzzedSocket.
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)33 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
34 net::TestCompletionCallback callback;
35 // Including an observer; even though the recorded results aren't currently
36 // used, it'll ensure the netlogging code is fuzzed as well.
37 net::RecordingNetLogObserver net_log_observer;
38 net::NetLogWithSource net_log_with_source =
39 net::NetLogWithSource::Make(net::NetLogSourceType::NONE);
40 FuzzedDataProvider data_provider(data, size);
41 net::FuzzedSocket fuzzed_socket(&data_provider, net::NetLog::Get());
42 CHECK_EQ(net::OK, fuzzed_socket.Connect(callback.callback()));
43
44 scoped_refptr<net::GrowableIOBuffer> read_buffer =
45 base::MakeRefCounted<net::GrowableIOBuffer>();
46 // Use a NetLog that listens to events, to get coverage of logging
47 // callbacks.
48 net::HttpStreamParser parser(
49 &fuzzed_socket, false /* is_reused */, GURL("http://localhost/"), "GET",
50 /*upload_data_stream=*/nullptr, read_buffer.get(), net_log_with_source);
51
52 net::HttpResponseInfo response_info;
53 int result = parser.SendRequest(
54 "GET / HTTP/1.1\r\n", net::HttpRequestHeaders(),
55 TRAFFIC_ANNOTATION_FOR_TESTS, &response_info, callback.callback());
56 result = callback.GetResult(result);
57 if (net::OK != result)
58 return 0;
59
60 result = parser.ReadResponseHeaders(callback.callback());
61 result = callback.GetResult(result);
62
63 if (result < 0)
64 return 0;
65
66 while (true) {
67 scoped_refptr<net::IOBufferWithSize> io_buffer =
68 base::MakeRefCounted<net::IOBufferWithSize>(64);
69 result = parser.ReadResponseBody(io_buffer.get(), io_buffer->size(),
70 callback.callback());
71
72 // Releasing the pointer to IOBuffer immediately is more likely to lead to a
73 // use-after-free.
74 io_buffer = nullptr;
75 if (callback.GetResult(result) <= 0)
76 break;
77 }
78
79 return 0;
80 }
81