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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,134 @@ | ||
| #pragma once | ||
| #ifndef TEST_FUZZ_COMMON_H | ||
| #define TEST_FUZZ_COMMON_H | ||
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||
| #ifdef RYML_SINGLE_HEADER | ||
| #include <ryml_all.hpp> | ||
| #else | ||
| #include <c4/yml/std/std.hpp> | ||
| #include <c4/yml/parse.hpp> | ||
| #include <c4/yml/emit.hpp> | ||
| #include <c4/yml/event_handler_tree.hpp> | ||
| #include <c4/yml/parse_engine.def.hpp> | ||
| #endif | ||
| #include <test_suite/test_suite_events.hpp> | ||
| #include <test_suite/test_suite_event_handler.hpp> | ||
| #include <cstdio> | ||
|
|
||
| #ifdef C4_EXCEPTIONS | ||
| #include <stdexcept> | ||
| #else | ||
| #include <csetjmp> | ||
| std::jmp_buf jmp_env = {}; | ||
| c4::csubstr jmp_msg = {}; | ||
| #endif | ||
|
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||
|
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| #ifdef RYML_DBG | ||
| #define _if_dbg(...) __VA_ARGS__ | ||
| bool report_errors = true; | ||
| #else | ||
| #define _if_dbg(...) | ||
| bool report_errors = false; | ||
| #endif | ||
|
|
||
| inline void report_error(const char* msg, size_t length, c4::yml::Location loc, FILE *f) | ||
| { | ||
| if(!report_errors) | ||
| return; | ||
| if(!loc.name.empty()) | ||
| { | ||
| fwrite(loc.name.str, 1, loc.name.len, f); | ||
| fputc(':', f); | ||
| } | ||
| fprintf(f, "%zu:", loc.line); | ||
| if(loc.col) | ||
| fprintf(f, "%zu:", loc.col); | ||
| if(loc.offset) | ||
| fprintf(f, " (%zuB):", loc.offset); | ||
| fputc(' ', f); | ||
| fprintf(f, "%.*s\n", static_cast<int>(length), msg); | ||
| fflush(f); | ||
| } | ||
|
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| inline C4_NORETURN void errcallback(const char *msg, size_t msg_len, c4::yml::Location location, void *) | ||
| { | ||
| report_error(msg, msg_len, location, stderr); | ||
| C4_IF_EXCEPTIONS( | ||
| throw std::runtime_error({msg, msg_len}); | ||
| , | ||
| jmp_msg.assign(msg, msg_len); | ||
| std::longjmp(jmp_env, 1); | ||
| ); | ||
| }; | ||
|
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||
| inline c4::yml::Callbacks create_custom_callbacks() | ||
| { | ||
| c4::set_error_flags(c4::ON_ERROR_CALLBACK); | ||
| c4::set_error_callback([](const char *msg, size_t msg_len){ | ||
| errcallback(msg, msg_len, {}, nullptr); | ||
| }); | ||
| c4::yml::Callbacks callbacks = {}; | ||
| callbacks.m_error = errcallback; | ||
| return callbacks; | ||
| } | ||
|
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| namespace c4 { | ||
| namespace yml { | ||
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| inline int fuzztest_parse_emit(uint32_t case_number, csubstr src) | ||
| { | ||
| C4_UNUSED(case_number); | ||
| set_callbacks(create_custom_callbacks()); | ||
| Tree tree(create_custom_callbacks()); | ||
| bool parse_success = false; | ||
| C4_IF_EXCEPTIONS_(try, if(setjmp(jmp_env) == 0)) | ||
| { | ||
| RYML_ASSERT(tree.empty()); | ||
| _if_dbg(_dbg_printf("in[{}]: [{}]~~~\n{}\n~~~\n", case_number, src.len, src); fflush(NULL)); | ||
| parse_in_arena(src, &tree); | ||
| parse_success = true; | ||
| _if_dbg(print_tree("parsed tree", tree)); | ||
| _if_dbg(_dbg_printf("in[{}]: [{}]~~~\n{}\n~~~\n", case_number, src.len, src); fflush(NULL)); | ||
| std::string dst = emitrs_yaml<std::string>(tree); | ||
| _if_dbg(_dbg_printf("emitted[{}]: [{}]~~~\n{}\n~~~\n", case_number, dst.size(), to_csubstr(dst)); fflush(NULL)); | ||
| C4_DONT_OPTIMIZE(dst); | ||
| C4_DONT_OPTIMIZE(parse_success); | ||
| } | ||
| C4_IF_EXCEPTIONS_(catch(std::exception const&), else) | ||
| { | ||
| // if an exception leaks from here, it is likely because of a greedy noexcept | ||
| _if_dbg(if(parse_success) print_tree("parsed tree", tree)); | ||
| return 1; | ||
| } | ||
| return 0; | ||
| } | ||
|
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| inline int fuzztest_yaml_events(uint32_t case_number, csubstr src) | ||
| { | ||
| C4_UNUSED(case_number); | ||
| set_callbacks(create_custom_callbacks()); | ||
| EventHandlerYamlStd::EventSink sink = {}; | ||
| EventHandlerYamlStd handler(&sink, create_custom_callbacks()); | ||
| ParseEngine<EventHandlerYamlStd> parser(&handler); | ||
| std::string str(src.begin(), src.end()); | ||
| C4_IF_EXCEPTIONS_(try, if(setjmp(jmp_env) == 0)) | ||
| { | ||
| _if_dbg(_dbg_printf("in[{}]: [{}]~~~\n{}\n~~~\n", case_number, src.len, src); fflush(NULL)); | ||
| parser.parse_in_place_ev("input", c4::to_substr(str)); | ||
| _if_dbg(_dbg_printf("evts[{}]: ~~~\n{}\n~~~\n", case_number, sink.result.c_str()); fflush(NULL)); | ||
| C4_DONT_OPTIMIZE(sink.result); | ||
| } | ||
| C4_IF_EXCEPTIONS_(catch(std::exception const&), else) | ||
| { | ||
| // if an exception leaks from here, it is likely because of a greedy noexcept | ||
| _if_dbg(fprintf(stdout, "err\n"); fflush(NULL)); | ||
| return 1; | ||
| } | ||
| return 0; | ||
| } | ||
|
|
||
| } // namespace yml | ||
| } // namespace c4 | ||
|
|
||
| #endif /* TEST_FUZZ_COMMON_H */ |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,9 @@ | ||
| #include "./test_fuzz_common.hpp" | ||
| #include <atomic> | ||
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| extern "C" int LLVMFuzzerTestOneInput(const uint8_t *str, size_t len) | ||
| { | ||
| static std::atomic_uint32_t case_number{0}; | ||
| c4::csubstr src = {reinterpret_cast<const char*>(str), len}; | ||
| return c4::yml::fuzztest_yaml_events(case_number++, src); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,16 @@ | ||
| #include <stdio.h> | ||
| #include <c4/fs/fs.hpp> | ||
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| extern "C" int LLVMFuzzerTestOneInput(const uint8_t *str, size_t len); | ||
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| int main(int argc, const char *argv[]) | ||
| { | ||
| if(argc < 2) | ||
| return 1; | ||
| const char *filename = argv[1]; | ||
| if(!c4::fs::file_exists(filename)) | ||
| return 1; | ||
| std::string file = c4::fs::file_get_contents<std::string>(filename); | ||
| (void)LLVMFuzzerTestOneInput(reinterpret_cast<const uint8_t*>(&file[0]), file.size()); | ||
| return 0; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,9 @@ | ||
| #include "./test_fuzz_common.hpp" | ||
| #include <atomic> | ||
|
|
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| extern "C" int LLVMFuzzerTestOneInput(const uint8_t *str, size_t len) | ||
| { | ||
| static std::atomic_uint32_t case_number{0}; | ||
| c4::csubstr src = {reinterpret_cast<const char*>(str), len}; | ||
| return c4::yml::fuzztest_parse_emit(case_number++, src); | ||
| } |
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