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# Copyright 2021 Code Intelligence GmbH
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
def java_fuzz_target_test(
name,
target_class = None,
target_method = None,
deps = [],
runtime_deps = [],
hook_jar = None,
data = [],
launcher_variant = "java",
tags = [],
fuzzer_args = [],
srcs = [],
size = None,
timeout = None,
env = None,
env_inherit = None,
verify_crash_input = True,
verify_crash_reproducer = True,
# Superset of the findings the fuzzer is expected to find. Since fuzzing runs are not
# deterministic across OSes, pinpointing the exact set of findings is difficult.
allowed_findings = [],
# By default, expect a crash iff allowed_findings isn't empty.
expect_crash = None,
**kwargs):
if target_class:
fuzzer_args = fuzzer_args + ["--target_class=" + target_class]
if target_method:
fuzzer_args = fuzzer_args + ["--target_method=" + target_method]
if expect_crash == None:
expect_crash = len(allowed_findings) != 0
target_name = name + "_target"
target_deploy_jar = target_name + "_deploy.jar"
# Deps can only be specified on java_binary targets with sources, which
# excludes e.g. Kotlin libraries wrapped into java_binary via runtime_deps.
deps = deps + ["//deploy:jazzer-api"] if srcs else []
native.java_binary(
name = target_name,
srcs = srcs,
create_executable = False,
visibility = ["//visibility:private"],
deps = deps,
runtime_deps = runtime_deps,
testonly = True,
tags = tags,
**kwargs
)
if launcher_variant == "java":
# With the Java driver, we expect fuzz targets to depend on Jazzer
# rather than have the launcher start a JVM with Jazzer on the class
# path.
native.java_import(
name = target_name + "_import",
jars = [target_deploy_jar],
testonly = True,
tags = tags,
)
target_with_driver_name = target_name + "_driver"
native.java_binary(
name = target_with_driver_name,
runtime_deps = [
target_name + "_import",
"//src/main/java/com/code_intelligence/jazzer:jazzer_import",
],
main_class = "com.code_intelligence.jazzer.Jazzer",
testonly = True,
tags = tags,
)
if launcher_variant == "native":
driver = "//launcher:jazzer"
elif launcher_variant == "java":
driver = target_with_driver_name
else:
fail("Invalid launcher variant: " + launcher_variant)
native.java_test(
name = name,
runtime_deps = [
"//bazel/tools/java:fuzz_target_test_wrapper",
],
jvm_flags = [
# Use the same memory settings for reproducers as those suggested by Jazzer when
# encountering an OutOfMemoryError.
"-Xmx1620m",
# Ensure that reproducers can be compiled even if they contain UTF-8 characters.
"-Dfile.encoding=UTF-8",
],
size = size or "enormous",
timeout = timeout or "moderate",
# args are shell tokenized and thus quotes are required in the case where arguments
# are empty.
args = [
"$(rlocationpath %s)" % driver,
"$(rlocationpath //deploy:jazzer-api)",
"$(rlocationpath %s)" % target_deploy_jar,
"$(rlocationpath %s)" % hook_jar if hook_jar else "''",
str(verify_crash_input),
str(verify_crash_reproducer),
str(expect_crash),
str(launcher_variant == "java"),
"'" + ",".join(allowed_findings) + "'",
] + fuzzer_args,
data = [
target_deploy_jar,
"//deploy:jazzer-api",
driver,
] + data + ([hook_jar] if hook_jar else []),
env = env,
env_inherit = env_inherit,
main_class = "com.code_intelligence.jazzer.tools.FuzzTargetTestWrapper",
use_testrunner = False,
tags = tags,
)
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