view contrib/fuzz/Makefile @ 47072:4c041c71ec01

revlog: introduce an explicit tracking of what the revlog is about

Since the dawn of time, people have been forced to rely to lossy introspection
of the index filename to determine what the purpose and role of the revlog they
encounter is. This is hacky, error prone, inflexible, abstraction-leaky,
<insert-your-own-complaints-here>.

In f63299ee7e4d Raphaël introduced a new attribute to track this information:
`revlog_kind`. However it is initialized in an odd place and various instances
end up not having it set. In addition is only tracking some of the information
we end up having to introspect in various pieces of code.

So we add a new attribute that holds more data and is more strictly enforced.
This work is done in collaboration with Raphaël.

The `revlog_kind` one will be removed/adapted in the next changeset. We expect
to be able to clean up various existing piece of code and to simplify coming
work around the newer revlog format.

Differential Revision: https://phab.mercurial-scm.org/D10352

CC ?= clang
CXX ?= clang++

# By default, use our own standalone_fuzz_target_runner.
# This runner does no fuzzing, but simply executes the inputs
# provided via parameters.
# Run e.g. "make all LIB_FUZZING_ENGINE=/path/to/libFuzzer.a"
# to link the fuzzer(s) against a real fuzzing engine.
#
# OSS-Fuzz will define its own value for LIB_FUZZING_ENGINE.
LIB_FUZZING_ENGINE ?= standalone_fuzz_target_runner.o

# Default to Python 3.
#
# Windows ships Python 3 as `python.exe`, which may not be on PATH.  py.exe is.
ifeq ($(OS),Windows_NT)
PYTHON?=py -3
else
PYTHON?=python3
endif

PYTHON_CONFIG ?= $$OUT/sanpy/bin/python-config
PYTHON_CONFIG_FLAGS ?= --ldflags --embed

CXXFLAGS += -Wno-deprecated-register

all: standalone_fuzz_target_runner.o oss-fuzz

standalone_fuzz_target_runner.o: standalone_fuzz_target_runner.cc

$$OUT/%_fuzzer_seed_corpus.zip: %_corpus.py
	$(PYTHON) $< $@

pyutil.o: pyutil.cc pyutil.h
	$(CXX) $(CXXFLAGS) -g -O1 \
	  `$(PYTHON_CONFIG) --cflags` \
	  -I../../mercurial -c -o pyutil.o pyutil.cc

bdiff-oss-fuzz.o: ../../mercurial/bdiff.c
	$(CC) $(CFLAGS) -c -o bdiff-oss-fuzz.o ../../mercurial/bdiff.c

bdiff_fuzzer: bdiff.cc bdiff-oss-fuzz.o
	$(CXX) $(CXXFLAGS) -std=c++17 -I../../mercurial bdiff.cc \
	  bdiff-oss-fuzz.o $(LIB_FUZZING_ENGINE) -o \
	  $$OUT/bdiff_fuzzer

mpatch.o: ../../mercurial/mpatch.c
	$(CC) -g -O1 -fsanitize=fuzzer-no-link,address -c -o mpatch.o \
	  ../../mercurial/mpatch.c

mpatch-oss-fuzz.o: ../../mercurial/mpatch.c
	$(CC) $(CFLAGS) -c -o mpatch-oss-fuzz.o ../../mercurial/mpatch.c

mpatch_fuzzer: mpatch.cc mpatch-oss-fuzz.o $$OUT/mpatch_fuzzer_seed_corpus.zip
	$(CXX) $(CXXFLAGS) -std=c++17 -I../../mercurial mpatch.cc \
	  mpatch-oss-fuzz.o $(LIB_FUZZING_ENGINE) -o \
	  $$OUT/mpatch_fuzzer

fuzz-x%.o: ../../mercurial/thirdparty/xdiff/x%.c ../../mercurial/thirdparty/xdiff/*.h
	$(CC) $(CFLAGS) -c \
	  -o $@ \
	  $<

xdiff_fuzzer: xdiff.cc fuzz-xdiffi.o fuzz-xprepare.o fuzz-xutils.o 
	$(CXX) $(CXXFLAGS) -std=c++17 -I../../mercurial xdiff.cc \
	  fuzz-xdiffi.o fuzz-xprepare.o fuzz-xutils.o \
	  $(LIB_FUZZING_ENGINE) -o $$OUT/xdiff_fuzzer

parsers-%.o: ../../mercurial/cext/%.c
	$(CC) -I../../mercurial `$(PYTHON_CONFIG) --cflags` $(CFLAGS) -c \
	  -o $@ $<

PARSERS_OBJS=parsers-manifest.o parsers-charencode.o parsers-parsers.o parsers-dirs.o parsers-pathencode.o parsers-revlog.o

dirs_fuzzer: dirs.cc pyutil.o $(PARSERS_OBJS) $$OUT/dirs_fuzzer_seed_corpus.zip
	$(CXX) $(CXXFLAGS) `$(PYTHON_CONFIG) --cflags` \
	  -Wno-register -Wno-macro-redefined \
	  -I../../mercurial dirs.cc \
	  pyutil.o $(PARSERS_OBJS) \
	  $(LIB_FUZZING_ENGINE) `$(PYTHON_CONFIG) $(PYTHON_CONFIG_FLAGS)` \
	  -o $$OUT/dirs_fuzzer

fncache_fuzzer: fncache.cc 
	$(CXX) $(CXXFLAGS) `$(PYTHON_CONFIG) --cflags` \
	  -Wno-register -Wno-macro-redefined \
	  -I../../mercurial fncache.cc \
	  pyutil.o $(PARSERS_OBJS) \
	  $(LIB_FUZZING_ENGINE) `$(PYTHON_CONFIG) $(PYTHON_CONFIG_FLAGS)` \
	  -o $$OUT/fncache_fuzzer

jsonescapeu8fast_fuzzer: jsonescapeu8fast.cc pyutil.o $(PARSERS_OBJS)
	$(CXX) $(CXXFLAGS) `$(PYTHON_CONFIG) --cflags` \
	  -Wno-register -Wno-macro-redefined \
	  -I../../mercurial jsonescapeu8fast.cc \
	  pyutil.o $(PARSERS_OBJS) \
	  $(LIB_FUZZING_ENGINE) `$(PYTHON_CONFIG) $(PYTHON_CONFIG_FLAGS)` \
	  -o $$OUT/jsonescapeu8fast_fuzzer

manifest_fuzzer: manifest.cc pyutil.o $(PARSERS_OBJS) $$OUT/manifest_fuzzer_seed_corpus.zip
	$(CXX) $(CXXFLAGS) `$(PYTHON_CONFIG) --cflags` \
	  -Wno-register -Wno-macro-redefined \
	  -I../../mercurial manifest.cc \
	  pyutil.o $(PARSERS_OBJS) \
	  $(LIB_FUZZING_ENGINE) `$(PYTHON_CONFIG) $(PYTHON_CONFIG_FLAGS)` \
	  -o $$OUT/manifest_fuzzer

revlog_fuzzer: revlog.cc pyutil.o $(PARSERS_OBJS) $$OUT/revlog_fuzzer_seed_corpus.zip
	$(CXX) $(CXXFLAGS) `$(PYTHON_CONFIG) --cflags` \
	  -Wno-register -Wno-macro-redefined \
	  -I../../mercurial revlog.cc \
	  pyutil.o $(PARSERS_OBJS) \
	  $(LIB_FUZZING_ENGINE) `$(PYTHON_CONFIG) $(PYTHON_CONFIG_FLAGS)` \
	  -o $$OUT/revlog_fuzzer

dirstate_fuzzer: dirstate.cc pyutil.o $(PARSERS_OBJS) $$OUT/dirstate_fuzzer_seed_corpus.zip
	$(CXX) $(CXXFLAGS) `$(PYTHON_CONFIG) --cflags` \
	  -Wno-register -Wno-macro-redefined \
	  -I../../mercurial dirstate.cc \
	  pyutil.o $(PARSERS_OBJS) \
	  $(LIB_FUZZING_ENGINE) `$(PYTHON_CONFIG) $(PYTHON_CONFIG_FLAGS)` \
	  -o $$OUT/dirstate_fuzzer

fm1readmarkers_fuzzer: fm1readmarkers.cc pyutil.o $(PARSERS_OBJS) $$OUT/fm1readmarkers_fuzzer_seed_corpus.zip
	$(CXX) $(CXXFLAGS) `$(PYTHON_CONFIG) --cflags` \
	  -Wno-register -Wno-macro-redefined \
	  -I../../mercurial fm1readmarkers.cc \
	  pyutil.o $(PARSERS_OBJS) \
	  $(LIB_FUZZING_ENGINE) `$(PYTHON_CONFIG) $(PYTHON_CONFIG_FLAGS)` \
	  -o $$OUT/fm1readmarkers_fuzzer

clean:
	$(RM) *.o *_fuzzer \
	  bdiff \
	  mpatch \
	  xdiff

oss-fuzz: bdiff_fuzzer mpatch_fuzzer xdiff_fuzzer dirs_fuzzer fncache_fuzzer jsonescapeu8fast_fuzzer manifest_fuzzer revlog_fuzzer dirstate_fuzzer fm1readmarkers_fuzzer

.PHONY: all clean oss-fuzz