Merge pull request #4728 from pks-t/pks/fuzzers

Fuzzers
author: Patrick Steinhardt <ps@pks.im> 2018-08-03 11:13:10 +0200
committer: GitHub <noreply@github.com> 2018-08-03 11:13:10 +0200
commit: 64138b70e10b9812af8f944e83747aa51da9a920 (patch)
tree: b1120efb0775e056444011d59570fb11de0c6746
parent: 0cf75467f1386d8b6674d12754ae25be1dbf90e1 (diff)
parent: 835d60432082b87984211b60ab82791c01011b1b (diff)
download: libgit2-64138b70e10b9812af8f944e83747aa51da9a920.tar.gz
325 files changed, 629 insertions, 29 deletions
diff --git a/.gitignore b/.gitignore
index 1ef1ec730..5991a41b9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -31,3 +31,5 @@ msvc/Release/
 .*.swp
 tags
 mkmf.log
+*.profdata
+*.profraw
diff --git a/CMakeLists.txt b/CMakeLists.txt
index fd846666f..b71d90385 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -38,33 +38,36 @@ INCLUDE(EnableWarnings)
 
 # Build options
 #
-OPTION( SONAME				"Set the (SO)VERSION of the target"		ON  )
-OPTION( BUILD_SHARED_LIBS	"Build Shared Library (OFF for Static)"	ON  )
-OPTION( THREADSAFE			"Build libgit2 as threadsafe"			ON )
-OPTION( BUILD_CLAR			"Build Tests using the Clar suite"		ON  )
-OPTION( BUILD_EXAMPLES		"Build library usage example apps"		OFF )
-OPTION( TAGS				"Generate tags"							OFF )
-OPTION( PROFILE				"Generate profiling information"		OFF )
-OPTION( ENABLE_TRACE		"Enables tracing support"				OFF )
-OPTION( LIBGIT2_FILENAME	"Name of the produced binary"			OFF )
-
-SET(SHA1_BACKEND "CollisionDetection" CACHE STRING "Backend to use for SHA1. One of Generic, OpenSSL, Win32, CommonCrypto, mbedTLS, CollisionDetection. ")
-OPTION( USE_SSH				"Link with libssh to enable SSH support" ON )
-OPTION( USE_HTTPS			"Enable HTTPS support. Can be set to a specific backend"	ON )
-OPTION( USE_GSSAPI			"Link with libgssapi for SPNEGO auth"   OFF )
-OPTION( VALGRIND			"Configure build for valgrind"			OFF )
-OPTION( CURL			"Use curl for HTTP if available" ON)
-OPTION( USE_EXT_HTTP_PARSER		"Use system HTTP_Parser if available" ON)
-OPTION( DEBUG_POOL			"Enable debug pool allocator"			OFF )
-OPTION( ENABLE_WERROR			"Enable compilation with -Werror"		OFF )
-OPTION( USE_BUNDLED_ZLIB    "Use the bundled version of zlib"       OFF )
+OPTION(SONAME				"Set the (SO)VERSION of the target"			 ON)
+OPTION(BUILD_SHARED_LIBS		"Build Shared Library (OFF for Static)"			 ON)
+OPTION(THREADSAFE			"Build libgit2 as threadsafe"				 ON)
+OPTION(BUILD_CLAR			"Build Tests using the Clar suite"			 ON)
+OPTION(BUILD_EXAMPLES			"Build library usage example apps"			OFF)
+OPTION(BUILD_FUZZERS			"Build the fuzz targets"				OFF)
+OPTION(TAGS				"Generate tags"						OFF)
+OPTION(PROFILE				"Generate profiling information"			OFF)
+OPTION(ENABLE_TRACE			"Enables tracing support"				OFF)
+OPTION(LIBGIT2_FILENAME			"Name of the produced binary"				OFF)
+
+   SET(SHA1_BACKEND 			"CollisionDetection"			       CACHE STRING
+       "Backend to use for SHA1. One of Generic, OpenSSL, Win32, CommonCrypto, mbedTLS, CollisionDetection.")
+OPTION(USE_SSH				"Link with libssh to enable SSH support"		 ON)
+OPTION(USE_HTTPS			"Enable HTTPS support. Can be set to a specific backend" ON)
+OPTION(USE_GSSAPI			"Link with libgssapi for SPNEGO auth"			OFF)
+OPTION(USE_STANDALONE_FUZZERS		"Enable standalone fuzzers (compatible with gcc)"	OFF)
+OPTION(VALGRIND				"Configure build for valgrind"				OFF)
+OPTION(CURL				"Use curl for HTTP if available"			 ON)
+OPTION(USE_EXT_HTTP_PARSER		"Use system HTTP_Parser if available"			 ON)
+OPTION(DEBUG_POOL			"Enable debug pool allocator"				OFF)
+OPTION(ENABLE_WERROR			"Enable compilation with -Werror"			OFF)
+OPTION(USE_BUNDLED_ZLIB    		"Use the bundled version of zlib"			OFF)
 
 IF (UNIX AND NOT APPLE)
-	OPTION( ENABLE_REPRODUCIBLE_BUILDS	"Enable reproducible builds" 			OFF )
+	OPTION(ENABLE_REPRODUCIBLE_BUILDS "Enable reproducible builds"				OFF)
 ENDIF()
 
 IF (APPLE)
-	OPTION( USE_ICONV			"Link with and use iconv library"		 ON )
+	OPTION(USE_ICONV		"Link with and use iconv library"			 ON)
 ENDIF()
 
 IF(MSVC)
@@ -74,27 +77,27 @@ IF(MSVC)
 	#
 	# If you are writing a CLR program and want to link to libgit2, you'll want
 	# to turn this on by invoking CMake with the "-DSTDCALL=ON" argument.
-	OPTION( STDCALL			"Build libgit2 with the __stdcall convention"	OFF  )
+	OPTION(STDCALL			"Build libgit2 with the __stdcall convention"		OFF)
 
 	# This option must match the settings used in your program, in particular if you
 	# are linking statically
-	OPTION( STATIC_CRT		"Link the static CRT libraries"	ON  )
+	OPTION(STATIC_CRT		"Link the static CRT libraries"		 		 ON)
 
 	# If you want to embed a copy of libssh2 into libgit2, pass a
 	# path to libssh2
-	OPTION( EMBED_SSH_PATH		"Path to libssh2 to embed (Windows)" OFF )
+	OPTION(EMBED_SSH_PATH		"Path to libssh2 to embed (Windows)"			OFF)
 ENDIF()
 
 
 IF(WIN32)
 	# By default, libgit2 is built with WinHTTP.  To use the built-in
 	# HTTP transport, invoke CMake with the "-DWINHTTP=OFF" argument.
-	OPTION(	WINHTTP			"Use Win32 WinHTTP routines"	ON	)
+	OPTION(WINHTTP			"Use Win32 WinHTTP routines"				 ON)
 ENDIF()
 
 IF(MSVC)
 	# Enable MSVC CRTDBG memory leak reporting when in debug mode.
-	OPTION(MSVC_CRTDBG "Enable CRTDBG memory leak reporting" OFF)
+	OPTION(MSVC_CRTDBG 		"Enable CRTDBG memory leak reporting"			OFF)
 ENDIF()
 
 FILE(STRINGS "${libgit2_SOURCE_DIR}/include/git2/version.h" GIT2_HEADER REGEX "^#define LIBGIT2_VERSION \"[^\"]*\"$")
@@ -245,6 +248,14 @@ ELSE()
 	# that uses CMAKE_CONFIGURATION_TYPES and not CMAKE_BUILD_TYPE
 ENDIF()
 
+IF(BUILD_FUZZERS AND NOT USE_STANDALONE_FUZZERS)
+	# The actual sanitizer link target will be added when linking the fuzz
+	# targets.
+	SET(CMAKE_REQUIRED_FLAGS "-fsanitize=fuzzer-no-link")
+	ADD_C_FLAG(-fsanitize=fuzzer-no-link)
+	UNSET(CMAKE_REQUIRED_FLAGS)
+ENDIF ()
+
 ADD_SUBDIRECTORY(src)
 
 # Tests
@@ -282,6 +293,18 @@ IF (BUILD_EXAMPLES)
 	ADD_SUBDIRECTORY(examples)
 ENDIF ()
 
+IF(BUILD_FUZZERS)
+	IF(NOT USE_STANDALONE_FUZZERS)
+		IF(BUILD_EXAMPLES)
+			MESSAGE(FATAL_ERROR "Cannot build the fuzzer targets and the examples together")
+		ENDIF()
+		IF(BUILD_CLAR)
+			MESSAGE(FATAL_ERROR "Cannot build the fuzzer targets and the tests together")
+		ENDIF()
+	ENDIF()
+	ADD_SUBDIRECTORY(fuzzers)
+ENDIF()
+
 IF(CMAKE_VERSION VERSION_GREATER 3)
 	FEATURE_SUMMARY(WHAT ENABLED_FEATURES DESCRIPTION "Enabled features:")
 	FEATURE_SUMMARY(WHAT DISABLED_FEATURES DESCRIPTION "Disabled features:")
diff --git a/ci/build.sh b/ci/build.sh
index a1deab3f2..0dd8f6772 100755
--- a/ci/build.sh
+++ b/ci/build.sh
@@ -29,7 +29,7 @@ echo "## Configuring build environment"
 echo "##############################################################################"
 
 echo cmake ${SOURCE_DIR} -DBUILD_EXAMPLES=ON ${CMAKE_OPTIONS}
-cmake ${SOURCE_DIR} -DBUILD_EXAMPLES=ON ${CMAKE_OPTIONS}
+cmake ${SOURCE_DIR} -DBUILD_EXAMPLES=ON -DBUILD_FUZZERS=ON -DUSE_STANDALONE_FUZZERS=ON ${CMAKE_OPTIONS}
 
 echo ""
 echo "##############################################################################"
diff --git a/ci/test.sh b/ci/test.sh
index 28f76029a..a9a853720 100755
--- a/ci/test.sh
+++ b/ci/test.sh
@@ -184,6 +184,17 @@ if [ -z "$SKIP_SSH_TESTS" ]; then
 	unset GITTEST_REMOTE_SSH_FINGERPRINT
 fi
 
+if [ -z "$SKIP_FUZZERS" ]; then
+	echo ""
+	echo "##############################################################################"
+	echo "## Running fuzzers"
+	echo "##############################################################################"
+
+	for fuzzer in fuzzers/*_fuzzer; do
+		"${fuzzer}" "${SOURCE_DIR}/fuzzers/corpora/$(basename "${fuzzer%_fuzzer}")" || die $?
+	done
+fi
+
 echo "Success."
 cleanup
 exit 0
diff --git a/cmake/Modules/AddCFlagIfSupported.cmake b/cmake/Modules/AddCFlagIfSupported.cmake
index 67fc89510..1d6181cac 100644
--- a/cmake/Modules/AddCFlagIfSupported.cmake
+++ b/cmake/Modules/AddCFlagIfSupported.cmake
@@ -5,9 +5,21 @@
 
 INCLUDE(CheckCCompilerFlag)
 
+MACRO(ADD_C_FLAG _FLAG)
+	STRING(TOUPPER ${_FLAG} UPCASE)
+	STRING(REGEX REPLACE "^-" "" UPCASE_PRETTY ${UPCASE})
+	CHECK_C_COMPILER_FLAG(${_FLAG} IS_${UPCASE_PRETTY}_SUPPORTED)
+
+	IF(IS_${UPCASE_PRETTY}_SUPPORTED)
+		SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${_FLAG}")
+	ELSE()
+		MESSAGE(FATAL_ERROR "Required flag ${_FLAG} is not supported")
+	ENDIF()
+ENDMACRO()
+
 MACRO(ADD_C_FLAG_IF_SUPPORTED _FLAG)
 	STRING(TOUPPER ${_FLAG} UPCASE)
-	STRING(REGEX REPLACE "^-" "" UPCASE_PRETTY ${UPCASE}) 
+	STRING(REGEX REPLACE "^-" "" UPCASE_PRETTY ${UPCASE})
 	CHECK_C_COMPILER_FLAG(${_FLAG} IS_${UPCASE_PRETTY}_SUPPORTED)
 
 	IF(IS_${UPCASE_PRETTY}_SUPPORTED)
diff --git a/docs/fuzzing.md b/docs/fuzzing.md
new file mode 100644
index 000000000..cd825766b
--- /dev/null
+++ b/docs/fuzzing.md
@@ -0,0 +1,71 @@
+# Fuzzing
+
+libgit2 is currently using [libFuzzer](https://libfuzzer.info) to perform
+automated fuzz testing. libFuzzer only works with clang.
+
+## Prerequisites** for building fuzz targets:
+
+1. All the prerequisites for [building libgit2](https://github.com/libgit2/libgit2).
+2. A recent version of clang. 6.0 is preferred. [pre-build Debian/Ubuntu
+   packages](https://github.com/libgit2/libgit2)
+
+## Build
+
+1. Create a build directory beneath the libgit2 source directory, and change
+   into it: `mkdir build && cd build`
+2. Choose one sanitizers to add. The currently supported sanitizers are
+   [`address`](https://clang.llvm.org/docs/AddressSanitizer.html),
+   [`undefined`](https://clang.llvm.org/docs/UndefinedBehaviorSanitizer.html),
+   and [`leak`/`address,leak`](https://clang.llvm.org/docs/LeakSanitizer.html).
+3. Create the cmake build environment and configure the build with the
+   sanitizer chosen: `CC=/usr/bin/clang-6.0 CFLAGS="-fsanitize=address" cmake
+   -DBUILD_CLAR=OFF -DBUILD_FUZZERS=ON -DCMAKE_BUILD_TYPE=RelWithDebInfo ..`.
+   Note that building the fuzzer targets is incompatible with the
+   tests and examples.
+4. Build libgit2: `cmake --build .`
+5. Exit the cmake build environment: `cd ..`
+
+## Run the fuzz targets
+
+1. `ASAN_SYMBOLIZER_PATH=/usr/bin/llvm-symbolize-6.0
+   LSAN_OPTIONS=allocator_may_return_null=1
+   ASAN_OPTIONS=allocator_may_return_null=1 ./build/fuzz/fuzz_packfile_raw
+   fuzz/corpora/fuzz_packfile_raw/`
+
+The `LSAN_OPTIONS` and `ASAN_OPTIONS` are there to allow `malloc(3)` to return
+`NULL`. The `LLVM_PROFILE_FILE` is there to override the path where libFuzzer
+will write the coverage report.
+
+## Get coverage
+
+In order to get coverage information, you need to add the "-fcoverage-mapping"
+and "-fprofile-instr-generate CFLAGS, and then run the fuzz target with
+`-runs=0`. That will produce a file called `default.profraw` (this behavior can
+be overridden by setting the `LLVM_PROFILE_FILE="yourfile.profraw"` environment
+variable).
+
+1. `llvm-profdata-6.0 merge -sparse default.profraw -o
+   fuzz_packfile_raw.profdata` transforms the data from a sparse representation
+   into a format that can be used by the other tools.
+2. `llvm-cov-6.0 report ./build/fuzz/fuzz_packfile_raw
+   -instr-profile=fuzz_packfile_raw.profdata` shows a high-level per-file
+   coverage report.
+3. `llvm-cov-6.0 show ./build/fuzz/fuzz_packfile_raw
+   -instr-profile=fuzz_packfile_raw.profdata [source file]` shows a line-by-line
+   coverage analysis of all the codebase (or a single source file).
+
+## Standalone mode
+
+In order to ensure that there are no regresions, each fuzzer target can be run
+in a standalone mode. This can be done by passing `-DUSE_STANDALONE_FUZZERS=ON`.
+This makes it compatible with gcc. This does not use the fuzzing engine, but
+just invokes every file in the chosen corpus.
+
+In order to get full coverage, though, you might want to also enable one of the
+sanitizers. You might need a recent version of clang to get full support.
+
+## References
+
+* [libFuzzer](https://llvm.org/docs/LibFuzzer.html) documentation.
+* [Source-based Code
+  Coverage](https://clang.llvm.org/docs/SourceBasedCodeCoverage.html).
diff --git a/fuzzers/CMakeLists.txt b/fuzzers/CMakeLists.txt
new file mode 100644
index 000000000..ea0612322
--- /dev/null
+++ b/fuzzers/CMakeLists.txt
@@ -0,0 +1,18 @@
+LINK_DIRECTORIES(${LIBGIT2_LIBDIRS})
+INCLUDE_DIRECTORIES(${LIBGIT2_INCLUDES})
+
+IF(BUILD_FUZZERS AND NOT USE_STANDALONE_FUZZERS)
+	ADD_C_FLAG(-fsanitize=fuzzer)
+ENDIF ()
+
+FILE(GLOB SRC_FUZZ RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *_fuzzer.c)
+FOREACH(fuzz_target_src ${SRC_FUZZ})
+	STRING(REPLACE ".c" "" fuzz_target_name ${fuzz_target_src})
+	SET(${fuzz_target_name}_SOURCES ${fuzz_target_src} ${LIBGIT2_OBJECTS})
+	IF(USE_STANDALONE_FUZZERS)
+		LIST(APPEND ${fuzz_target_name}_SOURCES "standalone_driver.c")
+	ENDIF()
+	ADD_EXECUTABLE(${fuzz_target_name} ${${fuzz_target_name}_SOURCES})
+	SET_TARGET_PROPERTIES(${fuzz_target_name} PROPERTIES C_STANDARD 90)
+	TARGET_LINK_LIBRARIES(${fuzz_target_name} ${LIBGIT2_LIBS})
+ENDFOREACH()
diff --git a/fuzzers/corpora/download_refs/clone.dat b/fuzzers/corpora/download_refs/clone.dat
new file mode 100644
index 000000000..f3e56b06b
--- /dev/null
+++ b/fuzzers/corpora/download_refs/clone.dat
diff --git a/fuzzers/corpora/packfile/004bd06c91c0dc8ab7e963f4b5e87be00292911e b/fuzzers/corpora/packfile/004bd06c91c0dc8ab7e963f4b5e87be00292911e
new file mode 100644
index 000000000..53c964260
--- /dev/null
+++ b/fuzzers/corpora/packfile/004bd06c91c0dc8ab7e963f4b5e87be00292911e
@@ -0,0 +1 @@
+�PACK
+\ No newline at end of file
diff --git a/fuzzers/corpora/packfile/00b67414c7b17916b3bd0a3d02284937fa0c4378 b/fuzzers/corpora/packfile/00b67414c7b17916b3bd0a3d02284937fa0c4378
new file mode 100644
index 000000000..838a00747
--- /dev/null
+++ b/fuzzers/corpora/packfile/00b67414c7b17916b3bd0a3d02284937fa0c4378
diff --git a/fuzzers/corpora/packfile/02eaeb43f0ec7dbfd91bd75e7ddcc7fd590dbc77 b/fuzzers/corpora/packfile/02eaeb43f0ec7dbfd91bd75e7ddcc7fd590dbc77
new file mode 100644
index 000000000..48fe2b3d6
--- /dev/null
+++ b/fuzzers/corpora/packfile/02eaeb43f0ec7dbfd91bd75e7ddcc7fd590dbc77
diff --git a/fuzzers/corpora/packfile/02f4286569be24124d8ab209733b7492f7560310 b/fuzzers/corpora/packfile/02f4286569be24124d8ab209733b7492f7560310
new file mode 100644
index 000000000..3944cd0cb
--- /dev/null
+++ b/fuzzers/corpora/packfile/02f4286569be24124d8ab209733b7492f7560310
diff --git a/fuzzers/corpora/packfile/037ba5f9d6d695aa4739810f8bea6e795c1d7614 b/fuzzers/corpora/packfile/037ba5f9d6d695aa4739810f8bea6e795c1d7614
new file mode 100644
index 000000000..f4ea551b7
--- /dev/null
+++ b/fuzzers/corpora/packfile/037ba5f9d6d695aa4739810f8bea6e795c1d7614
diff --git a/fuzzers/corpora/packfile/038e06289ac876f109fc12ca4b8284497ca26821 b/fuzzers/corpora/packfile/038e06289ac876f109fc12ca4b8284497ca26821
new file mode 100644
index 000000000..24923c4ee
--- /dev/null
+++ b/fuzzers/corpora/packfile/038e06289ac876f109fc12ca4b8284497ca26821
diff --git a/fuzzers/corpora/packfile/042dc4512fa3d391c5170cf3aa61e6a638f84342 b/fuzzers/corpora/packfile/042dc4512fa3d391c5170cf3aa61e6a638f84342
new file mode 100644
index 000000000..597a6db29
--- /dev/null
+++ b/fuzzers/corpora/packfile/042dc4512fa3d391c5170cf3aa61e6a638f84342
@@ -0,0 +1 @@
+i
+\ No newline at end of file
diff --git a/fuzzers/corpora/packfile/044bf19babf3f9cde07adbfa2a45c7508538cbe8 b/fuzzers/corpora/packfile/044bf19babf3f9cde07adbfa2a45c7508538cbe8
new file mode 100644
index 000000000..73a401373
--- /dev/null
+++ b/fuzzers/corpora/packfile/044bf19babf3f9cde07adbfa2a45c7508538cbe8
diff --git a/fuzzers/corpora/packfile/044e12ea43bee3c4befe27ba4687bee98d505fd7 b/fuzzers/corpora/packfile/044e12ea43bee3c4befe27ba4687bee98d505fd7
new file mode 100644
index 000000000..1e129661e
--- /dev/null
+++ b/fuzzers/corpora/packfile/044e12ea43bee3c4befe27ba4687bee98d505fd7
diff --git a/fuzzers/corpora/packfile/061fb208431db793bbd3645b7a16058a1e2a2412 b/fuzzers/corpora/packfile/061fb208431db793bbd3645b7a16058a1e2a2412
new file mode 100644
index 000000000..12183abc9
--- /dev/null
+++ b/fuzzers/corpora/packfile/061fb208431db793bbd3645b7a16058a1e2a2412
@@ -0,0 +1 @@
+�
+\ No newline at end of file
diff --git a/fuzzers/corpora/packfile/06576556d1ad802f247cad11ae748be47b70cd9c b/fuzzers/corpora/packfile/06576556d1ad802f247cad11ae748be47b70cd9c
new file mode 100644
index 000000000..ac044e5e4
--- /dev/null
+++ b/fuzzers/corpora/packfile/06576556d1ad802f247cad11ae748be47b70cd9c
@@ -0,0 +1 @@
+R
+\ No newline at end of file
diff --git a/fuzzers/corpora/packfile/06ceea0c98756d302c302410fffe0dc54a055486 b/fuzzers/corpora/packfile/06ceea0c98756d302c302410fffe0dc54a055486
new file mode 100644
index 000000000..add37f9a3
--- /dev/null
+++ b/fuzzers/corpora/packfile/06ceea0c98756d302c302410fffe0dc54a055486
diff --git a/fuzzers/corpora/packfile/071e65ac0bf08f2424a89a4a499004c1bb9f3f6c b/fuzzers/corpora/packfile/071e65ac0bf08f2424a89a4a499004c1bb9f3f6c
new file mode 100644
index 000000000..748750ce6
--- /dev/null
+++ b/fuzzers/corpora/packfile/071e65ac0bf08f2424a89a4a499004c1bb9f3f6c
diff --git a/fuzzers/corpora/packfile/0739ff2f064568a4d775c8061958e66c419dbea0 b/fuzzers/corpora/packfile/0739ff2f064568a4d775c8061958e66c419dbea0
new file mode 100644
index 000000000..aed5f1686
--- /dev/null
+++ b/fuzzers/corpora/packfile/0739ff2f064568a4d775c8061958e66c419dbea0
diff --git a/fuzzers/corpora/packfile/077760469bf8392342d09329c732b98d24be2c30 b/fuzzers/corpora/packfile/077760469bf8392342d09329c732b98d24be2c30
new file mode 100644
index 000000000..c9553bc99
--- /dev/null
+++ b/fuzzers/corpora/packfile/077760469bf8392342d09329c732b98d24be2c30
diff --git a/fuzzers/corpora/packfile/08534f33c201a45017b502e90a800f1b708ebcb3 b/fuzzers/corpora/packfile/08534f33c201a45017b502e90a800f1b708ebcb3
new file mode 100644
index 000000000..b7d5379f9
--- /dev/null
+++ b/fuzzers/corpora/packfile/08534f33c201a45017b502e90a800f1b708ebcb3
@@ -0,0 +1 @@
+\
+\ No newline at end of file
diff --git a/fuzzers/corpora/packfile/09e9046a7d6125cf2915a326a1504dd75d0543b5 b/fuzzers/corpora/packfile/09e9046a7d6125cf2915a326a1504dd75d0543b5
new file mode 100644
index 000000000..86d7321ad
--- /dev/null
+++ b/fuzzers/corpora/packfile/09e9046a7d6125cf2915a326a1504dd75d0543b5
@@ -0,0 +1 @@
+�
+\ No newline at end of file
diff --git a/fuzzers/corpora/packfile/0ade7c2cf97f75d009975f4d720d1fa6c19f4897 b/fuzzers/corpora/packfile/0ade7c2cf97f75d009975f4d720d1fa6c19f4897
new file mode 100644
index 000000000..f11c82a4c
--- /dev/null
+++ b/fuzzers/corpora/packfile/0ade7c2cf97f75d009975f4d720d1fa6c19f4897
@@ -0,0 +1 @@
+9
+\ No newline at end of file
diff --git a/fuzzers/corpora/packfile/0c316c67c1450aee57ffa3f74c19ea5d32d44622 b/fuzzers/corpora/packfile/0c316c67c1450aee57ffa3f74c19ea5d32d44622
new file mode 100644
index 000000000..08d7351a3
--- /dev/null
+++ b/fuzzers/corpora/packfile/0c316c67c1450aee57ffa3f74c19ea5d32d44622
diff --git a/fuzzers/corpora/packfile/0c395c44e4dd5b67caae8a98a66741e17e8af136 b/fuzzers/corpora/packfile/0c395c44e4dd5b67caae8a98a66741e17e8af136
new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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@@ -0,0 +1 @@
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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+
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new file mode 100644
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new file mode 100644
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new file mode 100644
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@@ -0,0 +1 @@
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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diff --git a/fuzzers/corpora/packfile/c8b839665bd381ff7d006b1b08c35f94f1818556 b/fuzzers/corpora/packfile/c8b839665bd381ff7d006b1b08c35f94f1818556
new file mode 100644
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new file mode 100644
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diff --git a/fuzzers/corpora/packfile/cb46c744c83541a0900e1e61780c18d43031a08b b/fuzzers/corpora/packfile/cb46c744c83541a0900e1e61780c18d43031a08b
new file mode 100644
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--- /dev/null
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@@ -0,0 +1 @@
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new file mode 100644
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new file mode 100644
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new file mode 100644
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diff --git a/fuzzers/corpora/packfile/d07e4bc786c88b8d2304f84c7db2098666f822c0 b/fuzzers/corpora/packfile/d07e4bc786c88b8d2304f84c7db2098666f822c0
new file mode 100644
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@@ -0,0 +1 @@
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new file mode 100644
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diff --git a/fuzzers/corpora/packfile/d1854cae891ec7b29161ccaf79a24b00c274bdaa b/fuzzers/corpora/packfile/d1854cae891ec7b29161ccaf79a24b00c274bdaa
new file mode 100644
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@@ -0,0 +1 @@
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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diff --git a/fuzzers/corpora/packfile/d5e60b9f94126a9ec865fda83feb6835d294b76b b/fuzzers/corpora/packfile/d5e60b9f94126a9ec865fda83feb6835d294b76b
new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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@@ -0,0 +1 @@
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new file mode 100644
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new file mode 100644
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new file mode 100644
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diff --git a/fuzzers/corpora/packfile/dc98359b3ef2ced9c3d07636c89d475a564c39d9 b/fuzzers/corpora/packfile/dc98359b3ef2ced9c3d07636c89d475a564c39d9
new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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@@ -0,0 +1 @@
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new file mode 100644
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new file mode 100644
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new file mode 100644
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@@ -0,0 +1 @@
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new file mode 100644
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new file mode 100644
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diff --git a/fuzzers/corpora/packfile/eb05b6ad73fb1f69ef750d0b9cb6c606ab9d949f b/fuzzers/corpora/packfile/eb05b6ad73fb1f69ef750d0b9cb6c606ab9d949f
new file mode 100644
index 000000000..aaba356e4
--- /dev/null
+++ b/fuzzers/corpora/packfile/eb05b6ad73fb1f69ef750d0b9cb6c606ab9d949f
diff --git a/fuzzers/corpora/packfile/eb0814ae767e5f28b87c998b0f44dcf80814db1b b/fuzzers/corpora/packfile/eb0814ae767e5f28b87c998b0f44dcf80814db1b
new file mode 100644
index 000000000..f834b0bf0
--- /dev/null
+++ b/fuzzers/corpora/packfile/eb0814ae767e5f28b87c998b0f44dcf80814db1b
diff --git a/fuzzers/corpora/packfile/ebbd9763912dd557d08abd1373c867a4b56e6a41 b/fuzzers/corpora/packfile/ebbd9763912dd557d08abd1373c867a4b56e6a41
new file mode 100644
index 000000000..9a5a0eda7
--- /dev/null
+++ b/fuzzers/corpora/packfile/ebbd9763912dd557d08abd1373c867a4b56e6a41
diff --git a/fuzzers/corpora/packfile/ebcdcb7effcc3f06e0d503638ac621de877fc554 b/fuzzers/corpora/packfile/ebcdcb7effcc3f06e0d503638ac621de877fc554
new file mode 100644
index 000000000..ef6080906
--- /dev/null
+++ b/fuzzers/corpora/packfile/ebcdcb7effcc3f06e0d503638ac621de877fc554
@@ -0,0 +1 @@
+�
+\ No newline at end of file
diff --git a/fuzzers/corpora/packfile/eddccafb2716adafb9ad48203f0621bb00ebc73f b/fuzzers/corpora/packfile/eddccafb2716adafb9ad48203f0621bb00ebc73f
new file mode 100644
index 000000000..9b1c9fbb3
--- /dev/null
+++ b/fuzzers/corpora/packfile/eddccafb2716adafb9ad48203f0621bb00ebc73f
diff --git a/fuzzers/corpora/packfile/edfbf20c83d3cec45470105581f7dc8b7e0889da b/fuzzers/corpora/packfile/edfbf20c83d3cec45470105581f7dc8b7e0889da
new file mode 100644
index 000000000..bf9c3901d
--- /dev/null
+++ b/fuzzers/corpora/packfile/edfbf20c83d3cec45470105581f7dc8b7e0889da
diff --git a/fuzzers/corpora/packfile/f03218467b1c74e465cebb3b8092e21a5122f31d b/fuzzers/corpora/packfile/f03218467b1c74e465cebb3b8092e21a5122f31d
new file mode 100644
index 000000000..d7539e4c9
--- /dev/null
+++ b/fuzzers/corpora/packfile/f03218467b1c74e465cebb3b8092e21a5122f31d
diff --git a/fuzzers/corpora/packfile/f28600befd899a94bed8e62853e90655d614f439 b/fuzzers/corpora/packfile/f28600befd899a94bed8e62853e90655d614f439
new file mode 100644
index 000000000..5087f32e8
--- /dev/null
+++ b/fuzzers/corpora/packfile/f28600befd899a94bed8e62853e90655d614f439
diff --git a/fuzzers/corpora/packfile/f3b15185b7a9a10716752d58434fe656d839092e b/fuzzers/corpora/packfile/f3b15185b7a9a10716752d58434fe656d839092e
new file mode 100644
index 000000000..857524445
--- /dev/null
+++ b/fuzzers/corpora/packfile/f3b15185b7a9a10716752d58434fe656d839092e
diff --git a/fuzzers/corpora/packfile/f436ed7933482610e08e18b40e9eec102b63b7d4 b/fuzzers/corpora/packfile/f436ed7933482610e08e18b40e9eec102b63b7d4
new file mode 100644
index 000000000..4a7dcffb4
--- /dev/null
+++ b/fuzzers/corpora/packfile/f436ed7933482610e08e18b40e9eec102b63b7d4
diff --git a/fuzzers/corpora/packfile/f55ea5b7c1cf5400aae56d7faf65a42320d0323a b/fuzzers/corpora/packfile/f55ea5b7c1cf5400aae56d7faf65a42320d0323a
new file mode 100644
index 000000000..c5e313730
--- /dev/null
+++ b/fuzzers/corpora/packfile/f55ea5b7c1cf5400aae56d7faf65a42320d0323a
diff --git a/fuzzers/corpora/packfile/f5eeab2d009aa4984378df6bfdd89366b7ecbb32 b/fuzzers/corpora/packfile/f5eeab2d009aa4984378df6bfdd89366b7ecbb32
new file mode 100644
index 000000000..15828cfa6
--- /dev/null
+++ b/fuzzers/corpora/packfile/f5eeab2d009aa4984378df6bfdd89366b7ecbb32
diff --git a/fuzzers/corpora/packfile/f6250c8b3cc0510e0f8f621100be83f018e2d234 b/fuzzers/corpora/packfile/f6250c8b3cc0510e0f8f621100be83f018e2d234
new file mode 100644
index 000000000..ab03a5e31
--- /dev/null
+++ b/fuzzers/corpora/packfile/f6250c8b3cc0510e0f8f621100be83f018e2d234
diff --git a/fuzzers/corpora/packfile/f7168410c7158ff7331698930937f9cdc54f4d8a b/fuzzers/corpora/packfile/f7168410c7158ff7331698930937f9cdc54f4d8a
new file mode 100644
index 000000000..e42053d0c
--- /dev/null
+++ b/fuzzers/corpora/packfile/f7168410c7158ff7331698930937f9cdc54f4d8a
diff --git a/fuzzers/corpora/packfile/f91847640af285c1b8a6df27f5c50686ed0deb70 b/fuzzers/corpora/packfile/f91847640af285c1b8a6df27f5c50686ed0deb70
new file mode 100644
index 000000000..615255fd6
--- /dev/null
+++ b/fuzzers/corpora/packfile/f91847640af285c1b8a6df27f5c50686ed0deb70
diff --git a/fuzzers/corpora/packfile/fa58a6b2d3286a136a43afeeaac589d2dde0a2a6 b/fuzzers/corpora/packfile/fa58a6b2d3286a136a43afeeaac589d2dde0a2a6
new file mode 100644
index 000000000..860053ee9
--- /dev/null
+++ b/fuzzers/corpora/packfile/fa58a6b2d3286a136a43afeeaac589d2dde0a2a6
diff --git a/fuzzers/corpora/packfile/fe3667be5fd2ffdd553ae04a534a2e9ce5445188 b/fuzzers/corpora/packfile/fe3667be5fd2ffdd553ae04a534a2e9ce5445188
new file mode 100644
index 000000000..d92e5748e
--- /dev/null
+++ b/fuzzers/corpora/packfile/fe3667be5fd2ffdd553ae04a534a2e9ce5445188
diff --git a/fuzzers/corpora/packfile/ff21cad92ddd105224408fa696e91080a8cf98fb b/fuzzers/corpora/packfile/ff21cad92ddd105224408fa696e91080a8cf98fb
new file mode 100644
index 000000000..c1cfc00c2
--- /dev/null
+++ b/fuzzers/corpora/packfile/ff21cad92ddd105224408fa696e91080a8cf98fb
diff --git a/fuzzers/corpora/packfile/ff9804ac04790bd58cdd124526c00b920469b812 b/fuzzers/corpora/packfile/ff9804ac04790bd58cdd124526c00b920469b812
new file mode 100644
index 000000000..4280c829c
--- /dev/null
+++ b/fuzzers/corpora/packfile/ff9804ac04790bd58cdd124526c00b920469b812
diff --git a/fuzzers/corpora/packfile/ffc54ca808e7666f250133ad0ae2185ad688a826 b/fuzzers/corpora/packfile/ffc54ca808e7666f250133ad0ae2185ad688a826
new file mode 100644
index 000000000..4489a6500
--- /dev/null
+++ b/fuzzers/corpora/packfile/ffc54ca808e7666f250133ad0ae2185ad688a826
@@ -0,0 +1 @@
+�
+\ No newline at end of file
diff --git a/fuzzers/download_refs_fuzzer.c b/fuzzers/download_refs_fuzzer.c
new file mode 100644
index 000000000..3807c09b3
--- /dev/null
+++ b/fuzzers/download_refs_fuzzer.c
@@ -0,0 +1,211 @@
+/*
+ * libgit2 raw packfile fuzz target.
+ *
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+
+#include <string.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include "git2.h"
+#include "git2/sys/transport.h"
+
+#define UNUSED(x) (void)(x)
+
+struct fuzzer_buffer {
+	const unsigned char *data;
+	size_t size;
+};
+
+struct fuzzer_stream {
+	git_smart_subtransport_stream base;
+	const unsigned char *readp;
+	const unsigned char *endp;
+};
+
+struct fuzzer_subtransport {
+	git_smart_subtransport base;
+	git_transport *owner;
+	struct fuzzer_buffer data;
+};
+
+static git_repository *repo;
+
+static int fuzzer_stream_read(git_smart_subtransport_stream *stream,
+	char *buffer,
+	size_t buf_size,
+	size_t *bytes_read)
+{
+	struct fuzzer_stream *fs = (struct fuzzer_stream *) stream;
+	size_t avail = fs->endp - fs->readp;
+
+	*bytes_read = (buf_size > avail) ? avail : buf_size;
+	memcpy(buffer, fs->readp, *bytes_read);
+	fs->readp += *bytes_read;
+
+	return 0;
+}
+
+static int fuzzer_stream_write(git_smart_subtransport_stream *stream,
+	  const char *buffer, size_t len)
+{
+	UNUSED(stream);
+	UNUSED(buffer);
+	UNUSED(len);
+	return 0;
+}
+
+static void fuzzer_stream_free(git_smart_subtransport_stream *stream)
+{
+	free(stream);
+}
+
+static int fuzzer_stream_new(
+	struct fuzzer_stream **out,
+	const struct fuzzer_buffer *data)
+{
+	struct fuzzer_stream *stream = malloc(sizeof(*stream));
+	if (!stream)
+		return -1;
+
+	stream->readp = data->data;
+	stream->endp = data->data + data->size;
+	stream->base.read = fuzzer_stream_read;
+	stream->base.write = fuzzer_stream_write;
+	stream->base.free = fuzzer_stream_free;
+
+	*out = stream;
+
+	return 0;
+}
+
+static int fuzzer_subtransport_action(
+	git_smart_subtransport_stream **out,
+	git_smart_subtransport *transport,
+	const char *url,
+	git_smart_service_t action)
+{
+	struct fuzzer_subtransport *ft = (struct fuzzer_subtransport *) transport;
+
+	UNUSED(url);
+	UNUSED(action);
+
+	return fuzzer_stream_new((struct fuzzer_stream **) out, &ft->data);
+}
+
+static int fuzzer_subtransport_close(git_smart_subtransport *transport)
+{
+	UNUSED(transport);
+	return 0;
+}
+
+static void fuzzer_subtransport_free(git_smart_subtransport *transport)
+{
+	free(transport);
+}
+
+static int fuzzer_subtransport_new(
+	struct fuzzer_subtransport **out,
+	git_transport *owner,
+	const struct fuzzer_buffer *data)
+{
+	struct fuzzer_subtransport *sub = malloc(sizeof(*sub));
+	if (!sub)
+		return -1;
+
+	sub->owner = owner;
+	sub->data.data = data->data;
+	sub->data.size = data->size;
+	sub->base.action = fuzzer_subtransport_action;
+	sub->base.close = fuzzer_subtransport_close;
+	sub->base.free = fuzzer_subtransport_free;
+
+	*out = sub;
+
+	return 0;
+}
+
+int fuzzer_subtransport_cb(
+	git_smart_subtransport **out,
+	git_transport *owner,
+	void *payload)
+{
+	struct fuzzer_buffer *buf = (struct fuzzer_buffer *) payload;
+	struct fuzzer_subtransport *sub;
+
+	if (fuzzer_subtransport_new(&sub, owner, buf) < 0)
+		return -1;
+
+	*out = &sub->base;
+	return 0;
+}
+
+int fuzzer_transport_cb(git_transport **out, git_remote *owner, void *param)
+{
+	git_smart_subtransport_definition def = {
+		fuzzer_subtransport_cb,
+		1,
+		param
+	};
+	return git_transport_smart(out, owner, &def);
+}
+
+void fuzzer_git_abort(const char *op)
+{
+	const git_error *err = giterr_last();
+	fprintf(stderr, "unexpected libgit error: %s: %s\n",
+		op, err ? err->message : "<none>");
+	abort();
+}
+
+int LLVMFuzzerInitialize(int *argc, char ***argv)
+{
+	char tmp[] = "/tmp/git2.XXXXXX";
+
+	UNUSED(argc);
+	UNUSED(argv);
+
+	if (git_libgit2_init() < 0)
+		abort();
+
+	if (git_libgit2_opts(GIT_OPT_SET_PACK_MAX_OBJECTS, 10000000) < 0)
+		abort();
+
+	if (mkdtemp(tmp) != tmp)
+		abort();
+
+	if (git_repository_init(&repo, tmp, 1) < 0)
+		fuzzer_git_abort("git_repository_init");
+
+	return 0;
+}
+
+int LLVMFuzzerTestOneInput(const unsigned char *data, size_t size)
+{
+	struct fuzzer_buffer buffer = { data, size };
+	git_remote_callbacks callbacks = GIT_REMOTE_CALLBACKS_INIT;
+	git_remote *remote;
+
+	if (git_remote_create_anonymous(&remote, repo, "fuzzer://remote-url") < 0)
+		fuzzer_git_abort("git_remote_create");
+
+	callbacks.transport = fuzzer_transport_cb;
+	callbacks.payload = &buffer;
+
+	if (git_remote_connect(remote, GIT_DIRECTION_FETCH,
+	    &callbacks, NULL, NULL) < 0)
+		goto out;
+
+	git_remote_download(remote, NULL, NULL);
+
+    out:
+	git_remote_free(remote);
+
+	return 0;
+}
diff --git a/fuzzers/packfile_fuzzer.c b/fuzzers/packfile_fuzzer.c
new file mode 100644
index 000000000..a59d28330
--- /dev/null
+++ b/fuzzers/packfile_fuzzer.c
@@ -0,0 +1,122 @@
+/*
+ * libgit2 packfile fuzzer target.
+ *
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <limits.h>
+#include <unistd.h>
+
+#include "git2.h"
+#include "git2/sys/mempack.h"
+
+#define UNUSED(x) (void)(x)
+
+static git_odb *odb = NULL;
+static git_odb_backend *mempack = NULL;
+
+/* Arbitrary object to seed the ODB. */
+static const unsigned char base_obj[] = { 07, 076 };
+static const unsigned int base_obj_len = 2;
+
+int LLVMFuzzerInitialize(int *argc, char ***argv)
+{
+	UNUSED(argc);
+	UNUSED(argv);
+	if (git_libgit2_init() < 0) {
+		fprintf(stderr, "Failed to initialize libgit2\n");
+		abort();
+	}
+	if (git_libgit2_opts(GIT_OPT_SET_PACK_MAX_OBJECTS, 10000000) < 0) {
+		fprintf(stderr, "Failed to limit maximum pack object count\n");
+		abort();
+	}
+	if (git_odb_new(&odb) < 0) {
+		fprintf(stderr, "Failed to create the odb\n");
+		abort();
+	}
+	if (git_mempack_new(&mempack) < 0) {
+		fprintf(stderr, "Failed to create the mempack\n");
+		abort();
+	}
+	if (git_odb_add_backend(odb, mempack, 999) < 0) {
+		fprintf(stderr, "Failed to add the mempack\n");
+		abort();
+	}
+	return 0;
+}
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
+{
+	git_indexer *indexer = NULL;
+	git_transfer_progress stats = {0, 0};
+	bool append_hash = false;
+	git_oid id;
+	char hash[GIT_OID_HEXSZ + 1] = {0};
+	char path[PATH_MAX];
+
+	if (size == 0)
+		return 0;
+
+	if (!odb || !mempack) {
+		fprintf(stderr, "Global state not initialized\n");
+		abort();
+	}
+	git_mempack_reset(mempack);
+
+	if (git_odb_write(&id, odb, base_obj, base_obj_len, GIT_OBJ_BLOB) < 0) {
+		fprintf(stderr, "Failed to add an object to the odb\n");
+		abort();
+	}
+
+	if (git_indexer_new(&indexer, ".", 0, odb, NULL, NULL) < 0) {
+		fprintf(stderr, "Failed to create the indexer: %s\n",
+			giterr_last()->message);
+		abort();
+	}
+
+	/*
+	 * If the first byte in the stream has the high bit set, append the
+	 * SHA1 hash so that the packfile is somewhat valid.
+	 */
+	append_hash = *data & 0x80;
+	++data;
+	--size;
+
+	if (git_indexer_append(indexer, data, size, &stats) < 0)
+		goto cleanup;
+	if (append_hash) {
+		git_oid oid;
+		if (git_odb_hash(&oid, data, size, GIT_OBJ_BLOB) < 0) {
+			fprintf(stderr, "Failed to compute the SHA1 hash\n");
+			abort();
+		}
+		if (git_indexer_append(indexer, &oid, sizeof(oid), &stats) < 0) {
+			goto cleanup;
+		}
+	}
+	if (git_indexer_commit(indexer, &stats) < 0)
+		goto cleanup;
+
+	/*
+	 * We made it! We managed to produce a valid packfile.
+	 * Let's clean it up.
+	 */
+	git_oid_fmt(hash, git_indexer_hash(indexer));
+	printf("Generated packfile %s\n", hash);
+	snprintf(path, sizeof(path), "pack-%s.idx", hash);
+	unlink(path);
+	snprintf(path, sizeof(path), "pack-%s.pack", hash);
+	unlink(path);
+
+cleanup:
+	git_mempack_reset(mempack);
+	git_indexer_free(indexer);
+	return 0;
+}
diff --git a/fuzzers/standalone_driver.c b/fuzzers/standalone_driver.c
new file mode 100644
index 000000000..fd8453d8b
--- /dev/null
+++ b/fuzzers/standalone_driver.c
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+
+#include <assert.h>
+#include <dirent.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+
+#include "fileops.h"
+#include "path.h"
+
+extern int LLVMFuzzerTestOneInput(const unsigned char *data, size_t size);
+extern int LLVMFuzzerInitialize(int *argc, char ***argv);
+
+static int run_one_file(const char *filename)
+{
+	git_buf buf = GIT_BUF_INIT;
+	int error = 0;
+
+	if (git_futils_readbuffer(&buf, filename) < 0) {
+		fprintf(stderr, "Failed to read %s: %m\n", filename);
+		error = -1;
+		goto exit;
+	}
+
+	LLVMFuzzerTestOneInput((const unsigned char *)buf.ptr, buf.size);
+exit:
+	git_buf_dispose(&buf);
+	return error;
+}
+
+int main(int argc, char **argv)
+{
+	git_vector corpus_files = GIT_VECTOR_INIT;
+	char *filename = NULL;
+	unsigned i = 0;
+	int error = 0;
+
+	if (argc != 2) {
+		fprintf(stderr, "Usage: %s <corpus directory>\n", argv[0]);
+		error = -1;
+		goto exit;
+	}
+
+	fprintf(stderr, "Running %s against %s\n", argv[0], argv[1]);
+	LLVMFuzzerInitialize(&argc, &argv);
+
+	if (git_path_dirload(&corpus_files, argv[1], 0, 0x0) < 0) {
+		fprintf(stderr, "Failed to scan corpus directory: %m\n");
+		error = -1;
+		goto exit;
+	}
+	git_vector_foreach(&corpus_files, i, filename) {
+		fprintf(stderr, "\tRunning %s...\n", filename);
+		if (run_one_file(filename) < 0) {
+			error = -1;
+			goto exit;
+		}
+	}
+	fprintf(stderr, "Done %d runs\n", i);
+
+exit:
+	git_vector_free_deep(&corpus_files);
+	return error;
+}
author	Patrick Steinhardt <ps@pks.im>	2018-08-03 11:13:10 +0200
committer	GitHub <noreply@github.com>	2018-08-03 11:13:10 +0200
commit	64138b70e10b9812af8f944e83747aa51da9a920 (patch)
tree	b1120efb0775e056444011d59570fb11de0c6746
parent	0cf75467f1386d8b6674d12754ae25be1dbf90e1 (diff)
parent	835d60432082b87984211b60ab82791c01011b1b (diff)
download	libgit2-64138b70e10b9812af8f944e83747aa51da9a920.tar.gz