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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef NET_SPDY_FUZZING_HPACK_FUZZ_UTIL_H_ | 5 #ifndef NET_SPDY_FUZZING_HPACK_FUZZ_UTIL_H_ |
6 #define NET_SPDY_FUZZING_HPACK_FUZZ_UTIL_H_ | 6 #define NET_SPDY_FUZZING_HPACK_FUZZ_UTIL_H_ |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 #include <vector> | 9 #include <vector> |
10 | 10 |
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36 | 36 |
37 // Samples a size from the exponential distribution with mean |mean|, | 37 // Samples a size from the exponential distribution with mean |mean|, |
38 // upper-bounded by |sanity_bound|. | 38 // upper-bounded by |sanity_bound|. |
39 static size_t SampleExponential(size_t mean, size_t sanity_bound); | 39 static size_t SampleExponential(size_t mean, size_t sanity_bound); |
40 | 40 |
41 // Holds an input string, and manages an offset into that string. | 41 // Holds an input string, and manages an offset into that string. |
42 struct NET_EXPORT_PRIVATE Input { | 42 struct NET_EXPORT_PRIVATE Input { |
43 Input(); // Initializes |offset| to zero. | 43 Input(); // Initializes |offset| to zero. |
44 ~Input(); | 44 ~Input(); |
45 | 45 |
46 size_t remaining() { | 46 size_t remaining() { return input.size() - offset; } |
47 return input.size() - offset; | 47 const char* ptr() { return input.data() + offset; } |
48 } | |
49 const char* ptr() { | |
50 return input.data() + offset; | |
51 } | |
52 | 48 |
53 std::string input; | 49 std::string input; |
54 size_t offset; | 50 size_t offset; |
55 }; | 51 }; |
56 | 52 |
57 // Returns true if the next header block was set at |out|. Returns | 53 // Returns true if the next header block was set at |out|. Returns |
58 // false if no input header blocks remain. | 54 // false if no input header blocks remain. |
59 static bool NextHeaderBlock(Input* input, base::StringPiece* out); | 55 static bool NextHeaderBlock(Input* input, base::StringPiece* out); |
60 | 56 |
61 // Returns the serialized header block length prefix for a block of | 57 // Returns the serialized header block length prefix for a block of |
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84 // |flip_per_thousand| bits for every 1,024 bytes of |buffer_length|, | 80 // |flip_per_thousand| bits for every 1,024 bytes of |buffer_length|, |
85 // rounding up. | 81 // rounding up. |
86 static void FlipBits(uint8* buffer, | 82 static void FlipBits(uint8* buffer, |
87 size_t buffer_length, | 83 size_t buffer_length, |
88 size_t flip_per_thousand); | 84 size_t flip_per_thousand); |
89 }; | 85 }; |
90 | 86 |
91 } // namespace net | 87 } // namespace net |
92 | 88 |
93 #endif // NET_SPDY_FUZZING_HPACK_FUZZ_UTIL_H_ | 89 #endif // NET_SPDY_FUZZING_HPACK_FUZZ_UTIL_H_ |
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