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Diffstat (limited to 'projects/openvpn/fuzz.h')
-rw-r--r-- | projects/openvpn/fuzz.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/projects/openvpn/fuzz.h b/projects/openvpn/fuzz.h new file mode 100644 index 000000000..10e33c3ee --- /dev/null +++ b/projects/openvpn/fuzz.h @@ -0,0 +1,47 @@ +/* Copyright 2021 Google LLC +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 <fuzzer/FuzzedDataProvider.h> + +// Returns a NULL-terminated C string that should be freed by the caller. +char *get_modifiable_string(FuzzedDataProvider &provider) { + std::string s1 = provider.ConsumeRandomLengthString(); + char *tmp = (char *)malloc(s1.size() + 1); + memcpy(tmp, s1.c_str(), s1.size()); + tmp[s1.size()] = '\0'; + return tmp; +} + +FuzzedDataProvider *prov = NULL; + + +extern "C" ssize_t fuzz_get_random_data(void *buf, size_t len) { + size_t ret_val; + char *cbuf = (char*)buf; + + if (prov->remaining_bytes() == 0) { + return -1; + } + + double prob = prov->ConsumeProbability<double>(); + if (prob < 0.05) { + return 0; + } + + if (len == 1) { + ret_val = prov->ConsumeData(buf, 1); + return ret_val; + } + ret_val = prov->ConsumeData(buf, len); + return ret_val; +} + |