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Lagom: Various fixes to make Lagom run on OSS-Fuzz (#4176)

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DavidKorczynski 2020-11-27 22:57:02 +00:00 • committed by GitHub
parent 83f6b8bc9a
commit ff8ac60184
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3 changed files with 72 additions and 52 deletions
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3
AK/Random.h
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@ -47,6 +47,9 @@ inline void fill_with_random(void* buffer, size_t length)
{ {
#if defined(__serenity__) #if defined(__serenity__)
arc4random_buf(buffer, length); arc4random_buf(buffer, length);
#elif defined(OSS_FUZZ)
(void)buffer;
(void)length;
#elif defined(__unix__) or defined(__APPLE__) #elif defined(__unix__) or defined(__APPLE__)
int rc = getentropy(buffer, length); int rc = getentropy(buffer, length);
(void)rc; (void)rc;

13
Meta/Lagom/CMakeLists.txt
View file

@ -1,7 +1,12 @@
cmake_minimum_required (VERSION 3.0) cmake_minimum_required (VERSION 3.0)
project (Lagom) project (Lagom)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-unknown-warning-option -O2 -Wall -Wextra -Werror -std=c++2a -fPIC -g -Wno-deprecated-copy") if (NOT ENABLE_OSS_FUZZ)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-unknown-warning-option -O2 -Wall -Wextra -Werror -std=c++2a -fPIC -g -Wno-deprecated-copy")
else()
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++2a -fPIC -g -Wno-deprecated-copy")
endif()
if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang") if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wconsumed -Wno-overloaded-virtual") set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wconsumed -Wno-overloaded-virtual")
@ -68,9 +73,12 @@ include_directories (../../)
include_directories (../../Libraries/) include_directories (../../Libraries/)
add_library(LagomCore ${LAGOM_CORE_SOURCES}) add_library(LagomCore ${LAGOM_CORE_SOURCES})
if (BUILD_LAGOM) if (BUILD_LAGOM)
add_library(Lagom $<TARGET_OBJECTS:LagomCore> ${LAGOM_MORE_SOURCES}) add_library(Lagom $<TARGET_OBJECTS:LagomCore> ${LAGOM_MORE_SOURCES})
if (NOT ENABLE_OSS_FUZZ)
add_executable(TestApp TestApp.cpp) add_executable(TestApp TestApp.cpp)
target_link_libraries(TestApp Lagom) target_link_libraries(TestApp Lagom)
target_link_libraries(TestApp stdc++) target_link_libraries(TestApp stdc++)
@ -127,8 +135,9 @@ if (BUILD_LAGOM)
WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
) )
endforeach() endforeach()
endif()
endif() endif()
if (ENABLE_FUZZER_SANITIZER) if (ENABLE_FUZZER_SANITIZER OR ENABLE_OSS_FUZZ)
add_subdirectory(Fuzzers) add_subdirectory(Fuzzers)
endif() endif()

8
Meta/Lagom/Fuzzers/CMakeLists.txt
View file

@ -1,5 +1,10 @@
function(add_simple_fuzzer name) function(add_simple_fuzzer name)
add_executable(${name} "${name}.cpp") add_executable(${name} "${name}.cpp")
if (ENABLE_OSS_FUZZ)
target_link_libraries(${name}
PUBLIC Lagom)
else()
target_compile_options(${name} target_compile_options(${name}
PRIVATE $<$<C_COMPILER_ID:Clang>:-g -O1 -fsanitize=fuzzer> PRIVATE $<$<C_COMPILER_ID:Clang>:-g -O1 -fsanitize=fuzzer>
) )
@ -7,6 +12,7 @@ function(add_simple_fuzzer name)
PUBLIC Lagom PUBLIC Lagom
PRIVATE $<$<C_COMPILER_ID:Clang>:-fsanitize=fuzzer> PRIVATE $<$<C_COMPILER_ID:Clang>:-fsanitize=fuzzer>
) )
endif()
endfunction() endfunction()
add_simple_fuzzer(FuzzBMPLoader) add_simple_fuzzer(FuzzBMPLoader)
@ -22,6 +28,7 @@ add_simple_fuzzer(FuzzPPMLoader)
add_simple_fuzzer(FuzzJs) add_simple_fuzzer(FuzzJs)
add_simple_fuzzer(FuzzMarkdown) add_simple_fuzzer(FuzzMarkdown)
if (NOT ENABLE_OSS_FUZZ)
add_executable(FuzzilliJs FuzzilliJs.cpp) add_executable(FuzzilliJs FuzzilliJs.cpp)
target_compile_options(FuzzilliJs target_compile_options(FuzzilliJs
PRIVATE $<$<C_COMPILER_ID:Clang>:-g -O1 -fsanitize-coverage=trace-pc-guard> PRIVATE $<$<C_COMPILER_ID:Clang>:-g -O1 -fsanitize-coverage=trace-pc-guard>
@ -30,3 +37,4 @@ target_link_libraries(FuzzilliJs
PUBLIC Lagom PUBLIC Lagom
PRIVATE $<$<C_COMPILER_ID:Clang>:-fsanitize-coverage=trace-pc-guard> PRIVATE $<$<C_COMPILER_ID:Clang>:-fsanitize-coverage=trace-pc-guard>
) )
endif()