diff options
Diffstat (limited to 'fuzz')
| -rw-r--r-- | fuzz/COPYING | 202 | ||||
| -rw-r--r-- | fuzz/DissectQueryMallocFuzzer.cpp | 62 | ||||
| -rw-r--r-- | fuzz/FreeFuzzer.cpp | 30 | ||||
| -rw-r--r-- | fuzz/FuzzingUtils.h | 44 | ||||
| -rw-r--r-- | fuzz/ParseFuzzer.cpp | 125 |
5 files changed, 463 insertions, 0 deletions
diff --git a/fuzz/COPYING b/fuzz/COPYING new file mode 100644 index 0000000..d645695 --- /dev/null +++ b/fuzz/COPYING @@ -0,0 +1,202 @@ + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. Definitions. + + "License" shall mean the terms and conditions for use, reproduction, + and distribution as defined by Sections 1 through 9 of this document. + + "Licensor" shall mean the copyright owner or entity authorized by + the copyright owner that is granting the License. + + "Legal Entity" shall mean the union of the acting entity and all + other entities that control, are controlled by, or are under common + control with that entity. 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We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright [yyyy] [name of copyright owner] + + 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. diff --git a/fuzz/DissectQueryMallocFuzzer.cpp b/fuzz/DissectQueryMallocFuzzer.cpp new file mode 100644 index 0000000..e31e4a3 --- /dev/null +++ b/fuzz/DissectQueryMallocFuzzer.cpp @@ -0,0 +1,62 @@ +// Copyright 2020 Google LLC +// Copyright 2025 Mikhail Khachaiants <mkhachaiants@gmail.com> +// +// 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 "uriparser/Uri.h" +#include "FuzzingUtils.h" +#include <cstddef> +#include <cstdint> +#include <utility> +#include <vector> + +extern "C" int LLVMFuzzerTestOneInput(const uint8_t * data, size_t size) { + FuzzedDataProvider fdp(data, size); + const UriString query = consumeRemainingBytesAsString(fdp); + + URI_TYPE(QueryList) * query_list = nullptr; + int item_count = -1; + + const URI_CHAR * query_start = query.c_str(); + const URI_CHAR * query_end = query_start + query.size(); + + // Break a query like "a=b&2=3" into key/value pairs. + int result = + URI_FUNC(DissectQueryMalloc)(&query_list, &item_count, query_start, query_end); + + if (query_list == nullptr || result != URI_SUCCESS || item_count < 0) { + return 0; + } + + int chars_required = 0; + if (URI_FUNC(ComposeQueryCharsRequired)(query_list, &chars_required) != URI_SUCCESS) { + return 0; + } + + if (!chars_required) { + URI_FUNC(FreeQueryList)(query_list); + return 0; + } + + // URI_FUNC(ComposeQuery) requires number of characters including terminator + const int buf_size = chars_required + 1; + + std::vector<URI_CHAR> buf(buf_size, 0); + int written = -1; + + // Reverse the process of uriDissectQueryMallocA. + result = URI_FUNC(ComposeQuery)(buf.data(), query_list, buf_size, &written); + + URI_FUNC(FreeQueryList)(query_list); + return 0; +} diff --git a/fuzz/FreeFuzzer.cpp b/fuzz/FreeFuzzer.cpp new file mode 100644 index 0000000..1eeb94f --- /dev/null +++ b/fuzz/FreeFuzzer.cpp @@ -0,0 +1,30 @@ +// Copyright 2020 Google LLC +// Copyright 2025 Mikhail Khachaiants <mkhachaiants@gmail.com> +// +// 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 "uriparser/Uri.h" +#include "FuzzingUtils.h" +#include <cstddef> +#include <cstdint> + +extern "C" int LLVMFuzzerTestOneInput(const uint8_t * data, size_t size) { + FuzzedDataProvider fdp(data, size); + UriString fuzz_uri = consumeRemainingBytesAsString(fdp); + URI_TYPE(ParserState) state; + URI_TYPE(Uri) uriA; + state.uri = &uriA; + URI_FUNC(ParseUri)(&state, fuzz_uri.c_str()); + URI_FUNC(FreeUriMembers)(&uriA); + return 0; +} diff --git a/fuzz/FuzzingUtils.h b/fuzz/FuzzingUtils.h new file mode 100644 index 0000000..74d27d3 --- /dev/null +++ b/fuzz/FuzzingUtils.h @@ -0,0 +1,44 @@ +// Copyright 2025 Mikhail Khachaiants <mkhachaiants@gmail.com> +// +// 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. + +#ifndef URI_FUZZING_UTILS_H +# define URI_FUZZING_UTILS_H 1 + +# include "uriparser/Uri.h" +# include <fuzzer/FuzzedDataProvider.h> +# include <string> + +using UriString = std::basic_string<URI_CHAR>; + +inline UriString tryConsumeBytesAsString(FuzzedDataProvider & fdp, size_t chars) { + UriString str(chars, 0); + const size_t bytes = fdp.ConsumeData(str.data(), chars * sizeof(URI_CHAR)); + // FuzzedDataProvider may provide less data than requested if the input is + // insufficiently long. We need to adjust the string length accordingly. + str.resize(bytes / sizeof(URI_CHAR)); + return str; +} + +inline UriString consumeRandomLengthString(FuzzedDataProvider & fdp) { + const size_t max_chars = fdp.remaining_bytes() / sizeof(URI_CHAR); + const size_t chars = fdp.ConsumeIntegralInRange<size_t>(0, max_chars); + return tryConsumeBytesAsString(fdp, chars); +} + +inline UriString consumeRemainingBytesAsString(FuzzedDataProvider & fdp) { + const size_t chars = fdp.remaining_bytes() / sizeof(URI_CHAR); + return tryConsumeBytesAsString(fdp, chars); +} + +#endif /* URI_FUZZING_UTILS_H */ diff --git a/fuzz/ParseFuzzer.cpp b/fuzz/ParseFuzzer.cpp new file mode 100644 index 0000000..adb83d7 --- /dev/null +++ b/fuzz/ParseFuzzer.cpp @@ -0,0 +1,125 @@ +// Copyright 2020 Google LLC +// Copyright 2025 Mikhail Khachaiants <mkhachaiants@gmail.com> +// +// 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 "uriparser/Uri.h" +#include "uriparser/UriIp4.h" +#include "FuzzingUtils.h" +#include <cstddef> +#include <cstring> +#include <vector> + +class UriHolder { +public: + UriHolder() { + memset((void *)&uri_, 0, sizeof(uri_)); + } + + ~UriHolder() { + URI_FUNC(FreeUriMembers)(&uri_); + } + + URI_TYPE(Uri) * get() { + return &uri_; + } + +private: + URI_TYPE(Uri) uri_; +}; + +void Escapes(const UriString & uri) { + const URI_CHAR * first = uri.c_str(); + // Up to 6 bytes per character with normalizeBreaks enabled (\n -> %0D%0A) + std::vector<URI_CHAR> buf1(uri.size() * 6 + 1); + // and up to 3 bytes per character otherwise + std::vector<URI_CHAR> buf2(uri.size() * 3 + 1); + + URI_FUNC(Escape)(first, &buf1[0], URI_TRUE, URI_TRUE); + URI_FUNC(Escape)(first, &buf1[0], URI_FALSE, URI_TRUE); + if (buf1.data()) { + URI_FUNC(UnescapeInPlace)(&buf1[0]); + } + + URI_FUNC(Escape)(first, &buf2[0], URI_TRUE, URI_FALSE); + URI_FUNC(Escape)(first, &buf2[0], URI_FALSE, URI_FALSE); + if (buf2.data()) { + URI_FUNC(UnescapeInPlace)(&buf2[0]); + } +} + +void FileNames(const UriString & uri) { + const size_t size = 8 + 3 * uri.size() + 1; + std::vector<URI_CHAR> buf(size); + + URI_FUNC(UnixFilenameToUriString)(uri.c_str(), &buf[0]); + URI_FUNC(WindowsFilenameToUriString)(uri.c_str(), &buf[0]); + URI_FUNC(UriStringToUnixFilename)(uri.c_str(), &buf[0]); + URI_FUNC(UriStringToWindowsFilename)(uri.c_str(), &buf[0]); +} + +void Ipv4(const UriString & s) { + const URI_CHAR * cstr = s.c_str(); + unsigned char result[4] = {}; + URI_FUNC(ParseIpFourAddress)(result, cstr, &cstr[s.size()]); +} + +extern "C" int LLVMFuzzerTestOneInput(const uint8_t * data, size_t size) { + FuzzedDataProvider stream(data, size); + bool domainRelative = stream.ConsumeBool(); + + const UriString uri1 = consumeRandomLengthString(stream); + const UriString uri2 = consumeRemainingBytesAsString(stream); + + Escapes(uri1); + Escapes(uri2); + + FileNames(uri1); + FileNames(uri2); + + Ipv4(uri1); + Ipv4(uri2); + + UriHolder uriHolder1; + URI_TYPE(ParserState) state1; + state1.uri = uriHolder1.get(); + if (URI_FUNC(ParseUri)(&state1, uri1.c_str()) != URI_SUCCESS) { + return 0; + } + + URI_CHAR buf[1024 * 8] = {0}; + int written = 0; + URI_FUNC(ToString)(buf, state1.uri, sizeof(buf) / sizeof(buf[0]), &written); + + UriHolder uriHolder2; + if (URI_FUNC(ParseSingleUri)(uriHolder2.get(), uri2.c_str(), nullptr) + != URI_SUCCESS) { + return 0; + } + + URI_FUNC(EqualsUri)(state1.uri, uriHolder2.get()); + + unsigned int mask = 0; + URI_FUNC(NormalizeSyntaxMaskRequiredEx)(state1.uri, &mask); + URI_FUNC(NormalizeSyntax)(state1.uri); + + URI_TYPE(Uri) absUri; + URI_FUNC(AddBaseUri)(&absUri, state1.uri, uriHolder2.get()); + URI_FUNC(FreeUriMembers)(&absUri); + + URI_TYPE(Uri) relUri; + URI_FUNC(RemoveBaseUri)(&relUri, state1.uri, uriHolder2.get(), domainRelative); + URI_FUNC(FreeUriMembers)(&relUri); + + return 0; +} |