mirror of https://github.com/grpc/grpc.git
[fuzzing] Expose random number generator to some fuzzers (#34415)
Expand our fuzzing capabilities by allowing fuzzers to choose the bits that go into random number distribution generators. --------- Co-authored-by: ctiller <ctiller@users.noreply.github.com>pull/34286/head^2
Craig Tiller
1 year ago
committed by
GitHub
parent
7fc1b33371
commit
59d886cb5c
34 changed files with 247 additions and 52 deletions
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frames { |
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end_of_stream: true |
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max_metadata_length: 4096 |
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parse: "\244p\203\333\360\244\037!\203\333\360c" |
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absolute_max_metadata_length: 1 |
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} |
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frames { |
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end_of_stream: true |
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max_metadata_length: 4096 |
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parse: "\020\244\007\244\360\244\017-b\000\020content-location\000in\213c[)(?*\240\244\256@\010\020\244\037\007:" |
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} |
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// Copyright 2023 gRPC authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef GRPC_TEST_CORE_UTIL_PROTO_BIT_GEN_H |
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#define GRPC_TEST_CORE_UTIL_PROTO_BIT_GEN_H |
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#include <grpc/support/port_platform.h> |
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#include <stddef.h> |
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#include <cstdint> |
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#include <limits> |
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#include <vector> |
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namespace grpc_core { |
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// Set of random numbers from a proto file (or other container) forming a bit
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// source. Satisfies the requirements for a URNG.
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class ProtoBitGen : public std::numeric_limits<uint64_t> { |
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public: |
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template <typename SourceContainer> |
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explicit ProtoBitGen(const SourceContainer& c) { |
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for (auto r : c) { |
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results_.push_back(r); |
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} |
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} |
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using result_type = uint64_t; |
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uint64_t operator()() { |
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if (results_.empty()) { |
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++current_; |
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return current_; |
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} |
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// We loop through but increment by one each round, to guarantee to see all
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// values eventually.
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uint64_t out = |
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results_[current_ % results_.size()] + (current_ / results_.size()); |
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++current_; |
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return out; |
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} |
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private: |
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std::vector<uint64_t> results_; |
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size_t current_ = 0; |
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}; |
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} // namespace grpc_core
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#endif // GRPC_TEST_CORE_UTIL_PROTO_BIT_GEN_H
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