# Variables
[env]
FUZZER_NAME='libpng_harness'
FUZZER_NAME_CRASHING='libpng_harness_crashing'
PROJECT_DIR = { script = ["pwd"] }
CROSS_CC = "arm-linux-gnueabi-gcc"

[tasks.unsupported]
script_runner="@shell"
script='''
echo "Qemu fuzzer not supported on windows/mac"
'''

#zlib
[tasks.zlib]
linux_alias = "zlib_unix"
mac_alias = "unsupported"
windows_alias = "unsupported"

[tasks.zlib_unix_wget]
condition = { files_not_exist = [ "./zlib-1.2.12" ] }
script_runner="@shell"
# NOTE: There's no specific reason we're using an old version of zlib,
# but newer versions get moved to fossils/ after a while.
script='''
wget https://zlib.net/fossils/zlib-1.2.12.tar.gz
tar -xvf zlib-1.2.12.tar.gz
'''

[tasks.zlib_unix]
condition = { files_not_exist = [ "./zlib-1.2.12/zlib/lib/libz.a" ] }
script_runner="@shell"
script='''
cd zlib-1.2.12 && CC=$CROSS_CC ./configure --prefix=./zlib
make install
'''
dependencies = [ "zlib_unix_wget" ]

# libpng
[tasks.libpng]
linux_alias = "libpng_unix"
mac_alias = "unsupported"
windows_alias = "unsupported"

[tasks.libpng_unix_wget]
condition = { files_not_exist = [ "./libpng-1.6.37" ] }
script_runner="@shell"
script='''
wget https://deac-fra.dl.sourceforge.net/project/libpng/libpng16/1.6.37/libpng-1.6.37.tar.xz
tar -xvf libpng-1.6.37.tar.xz
'''

[tasks.libpng_unix]
condition = { files_not_exist = [ "./libpng-1.6.37/.libs/libpng16.a" ] }
script_runner="@shell"
script='''
cd libpng-1.6.37 && CC=$CROSS_CC CFLAGS=-I../zlib-1.2.12/zlib/lib LDFLAGS=-L../zlib-1.2.12/zlib/lib ./configure --enable-shared=no --with-pic=yes --enable-hardware-optimizations=yes --host=arm
make
'''
dependencies = [ "zlib", "libpng_unix_wget" ]

# fuzzer
[tasks.fuzzer]
linux_alias = "fuzzer_unix"
mac_alias = "fuzzer_unix"
windows_alias = "unsupported"

[tasks.fuzzer_unix]
command = "cargo"
args = ["build", "--release"]

# Harness
[tasks.harness]
linux_alias = "harness_unix"
mac_alias = "unsupported"
windows_alias = "unsupported"

[tasks.harness_unix]
script_runner="@shell"
script='''
# Build the libpng harness
arm-linux-gnueabi-g++ \
    ./harness.cc \
    ./libpng-1.6.37/.libs/libpng16.a \
	./zlib-1.2.12/zlib/lib/libz.a \
    -I./libpng-1.6.37/ \
	-I../zlib-1.2.12/zlib/lib \
	-L../zlib-1.2.12/zlib/lib \
    -o ${FUZZER_NAME} \
    -lm \
	-static
'''
dependencies = [ "libpng" ]

# Run the fuzzer
[tasks.run]
linux_alias = "run_unix"
mac_alias = "run_unix"
windows_alias = "unsupported"

[tasks.run_unix]
command = "cargo"
args = ["run", "--release", "./${FUZZER_NAME}"]
dependencies = [ "harness", "fuzzer" ]

# Harness with an artifical crash
[tasks.harness_crashing]
linux_alias = "harness_unix_crashing"
mac_alias = "unsupported"
windows_alias = "unsupported"

[tasks.harness_unix_crashing]
script_runner="@shell"
script='''
# Build the libpng harness
arm-linux-gnueabi-g++ \
    ./harness.cc \
    ./libpng-1.6.37/.libs/libpng16.a \
	./zlib-1.2.12/zlib/lib/libz.a \
    -I./libpng-1.6.37/ \
	-I../zlib-1.2.12/zlib/lib \
	-L../zlib-1.2.12/zlib/lib \
    -o ${FUZZER_NAME_CRASHING} \
    -lm \
	-DHAS_DUMMY_CRASH \
	-static
'''
dependencies = [ "libpng" ]

# Run the fuzzer with an artificial crash
[tasks.run_crashing]
linux_alias = "run_unix_crashing"
mac_alias = "unsupported"
windows_alias = "unsupported"

[tasks.run_unix_crashing]
command = "cargo"
args = ["run", "--release", "./${FUZZER_NAME_CRASHING}"]
dependencies = [ "harness_crashing", "fuzzer" ]

# Run the fuzzer
[tasks.test]
linux_alias = "test_unix"
mac_alias = "test_unix"
windows_alias = "unsupported"

# Short test
[tasks.test_unix]
script_runner = "@shell"
script='''
rm -rf libafl_unix_shmem_server || true
timeout 11s cargo run --release ./${FUZZER_NAME} 2>/dev/null &
'''
dependencies = [ "harness", "fuzzer" ]

# Clean up
[tasks.clean]
linux_alias = "clean_unix"
mac_alias = "clean_unix"
windows_alias = "unsupported"

[tasks.clean_unix]
# Disable default `clean` definition
clear = true
script_runner="@shell"
script='''
rm -f ./${FUZZER_NAME}
rm -f ./${FUZZER_NAME_CRASHING}
rm -rf zlib-*
rm -rf libpng-*
cargo clean
'''