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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
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83 lines
1.9 KiB
83 lines
1.9 KiB
7 years ago
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/*
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*
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* Copyright 2018 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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*
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*/
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#include "test/core/util/fuzzer_util.h"
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#include <grpc/support/alloc.h>
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#include "src/core/lib/gpr/useful.h"
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namespace grpc_core {
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namespace testing {
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uint8_t grpc_fuzzer_get_next_byte(input_stream* inp) {
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if (inp->cur == inp->end) {
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return 0;
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}
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return *inp->cur++;
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}
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char* grpc_fuzzer_get_next_string(input_stream* inp, bool* special) {
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char* str = nullptr;
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size_t cap = 0;
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size_t sz = 0;
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char c;
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do {
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if (cap == sz) {
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cap = GPR_MAX(3 * cap / 2, cap + 8);
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str = static_cast<char*>(gpr_realloc(str, cap));
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}
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c = static_cast<char>(grpc_fuzzer_get_next_byte(inp));
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str[sz++] = c;
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} while (c != 0 && c != 1);
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if (special != nullptr) {
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*special = (c == 1);
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}
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if (c == 1) {
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str[sz - 1] = 0;
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}
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return str;
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}
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uint32_t grpc_fuzzer_get_next_uint32(input_stream* inp) {
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uint8_t b = grpc_fuzzer_get_next_byte(inp);
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uint32_t x = b & 0x7f;
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if (b & 0x80) {
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x <<= 7;
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b = grpc_fuzzer_get_next_byte(inp);
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x |= b & 0x7f;
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if (b & 0x80) {
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x <<= 7;
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b = grpc_fuzzer_get_next_byte(inp);
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x |= b & 0x7f;
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if (b & 0x80) {
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x <<= 7;
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b = grpc_fuzzer_get_next_byte(inp);
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x |= b & 0x7f;
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if (b & 0x80) {
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x = (x << 4) | (grpc_fuzzer_get_next_byte(inp) & 0x0f);
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}
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}
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}
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}
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return x;
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}
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} // namespace testing
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} // namespace grpc_core
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