DeforaNetworks/deepstate
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new way to specify which test

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This commit is contained in:
Alex Groce 2018-07-30 22:05:56 -07:00
parent 121a748f7e
commit 656ffa1b6d
3 changed files with 9 additions and 17 deletions
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4
README.md
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@ -99,10 +99,6 @@ directory shows how this can be done. The libFuzzer executable works
like any other libFuzzer executable, and the tests produced can be run
using the normal DeepState executable.
Because libFuzzer controls `main`, you need a different executable for
each test when using libFuzzer, which can be done as shown in the compilation for the
`IntegerOverflow` example.
## Fuzzing with AFL
DeepState can also be used with a file-based fuzzer (e.g. AFL). There

6
examples/CMakeLists.txt
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@ -71,12 +71,6 @@ if (BUILD_LIBFUZZER)
target_link_libraries(IntegerOverflow_LF deepstate_LF)
target_link_libraries (IntegerOverflow_LF "-fsanitize=fuzzer")
set_target_properties(IntegerOverflow_LF PROPERTIES COMPILE_DEFINITIONS "LIBFUZZER")
add_executable(IntegerOverflow_Addition_LF IntegerOverflow.cpp)
target_link_libraries(IntegerOverflow_Addition_LF deepstate_LF)
target_link_libraries (IntegerOverflow_Addition_LF "-fsanitize=fuzzer")
set_target_properties(IntegerOverflow_Addition_LF PROPERTIES COMPILE_DEFINITIONS
"LIBFUZZER;LIBFUZZER_WHICH_TEST=\"SignedInteger_AdditionOverflow\"")
endif()
add_executable(IntegerArithmetic IntegerArithmetic.cpp)

16
src/lib/DeepState.c
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@ -558,15 +558,17 @@ extern int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
void *mem = malloc(sizeof(struct DeepState_TestRunInfo));
DeepState_CurrentTestRun = (struct DeepState_TestRunInfo *) mem;
#ifdef LIBFUZZER_WHICH_TEST
for (test = DeepState_FirstTest(); test != NULL; test = test->prev) {
if (strncmp(LIBFUZZER_WHICH_TEST, test->test_name, strlen(FLAGS_input_which_test)) == 0) {
break;
const char* which_test = getenv("LIBFUZZER_WHICH_TEST");
if (!(strnlen(which_test, 1024) == 0)) {
for (test = DeepState_FirstTest(); test != NULL; test = test->prev) {
if (strncmp(which_test, test->test_name, strnlen(which_test, 1024)) == 0) {
break;
}
}
} else
test = DeepState_FirstTest();
}
#else
test = DeepState_FirstTest();
#endif
memset((void *) DeepState_Input, 0, sizeof(DeepState_Input));
DeepState_InputIndex = 0;