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reduce the scope of the fuzzer #846

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Merged
anonrig merged 2 commits into from
Jan 22, 2025
Merged

reduce the scope of the fuzzer #846

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fc8acca
reduce the scope of the fuzzer
lemire Jan 22, 2025
51a73ea
lint
lemire Jan 22, 2025
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lint
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@lemire
lemire committed Jan 22, 2025
commit 51a73ea4dedafa566a2ccbe6f0296626a34a9bb8
32 changes: 18 additions & 14 deletions fuzz/url_pattern.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -7,27 +7,31 @@
#include "ada.h"

std::string bytesToAlphanumeric(const std::string& source) {
static const char alphanumeric[] =
"abcdefghijklmnopqrstuvwxyz"
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"0123456789";
static const char alphanumeric[] =
"abcdefghijklmnopqrstuvwxyz"
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"0123456789";

std::string result;
result.reserve(source.size());
std::string result;
result.reserve(source.size());

for (char byte : source) {
int index = static_cast<unsigned char>(byte) % (sizeof(alphanumeric) - 1);
result.push_back(alphanumeric[index]);
}
for (char byte : source) {
int index = static_cast<unsigned char>(byte) % (sizeof(alphanumeric) - 1);
result.push_back(alphanumeric[index]);
}

return result;
return result;
}

extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
FuzzedDataProvider fdp(data, size);
// We do not want to trigger arbitrary regex matching.
std::string source = "/"+ bytesToAlphanumeric(fdp.ConsumeRandomLengthString(50)) + "/" + bytesToAlphanumeric(fdp.ConsumeRandomLengthString(50));
std::string base_source = "/"+ bytesToAlphanumeric(fdp.ConsumeRandomLengthString(50)) + "/" + bytesToAlphanumeric(fdp.ConsumeRandomLengthString(50));
std::string source =
"/" + bytesToAlphanumeric(fdp.ConsumeRandomLengthString(50)) + "/" +
bytesToAlphanumeric(fdp.ConsumeRandomLengthString(50));
std::string base_source =
"/" + bytesToAlphanumeric(fdp.ConsumeRandomLengthString(50)) + "/" +
bytesToAlphanumeric(fdp.ConsumeRandomLengthString(50));

// Without base or options
auto result = ada::parse_url_pattern(source, nullptr, nullptr);
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