Build structure for OSS-Fuzz integration

configure.py

@@ -439,6 +439,11 @@
  dest='v8_options',
  help='v8 options to pass, see `node --v8-options` for examples.')
 
+parser.add_option('--with-ossfuzz',
+ action='store_true',
+ dest='ossfuzz',
+ help='Enables building of fuzzers. This command should be run in an OSS-Fuzz Docker image.')
+
 parser.add_option('--with-arm-float-abi',
  action='store',
  dest='arm_float_abi',
@@ -1827,6 +1832,9 @@ def make_bin_override():
 configure_static(output)
 configure_inspector(output)
 
+# Forward OSS-Fuzz settings
+output['variables']['ossfuzz'] = b(options.ossfuzz)
+
 # variables should be a root level element,
 # move everything else to target_defaults
 variables = output['variables']

node.gyp

@@ -13,6 +13,7 @@
  'node_use_bundled_v8%': 'true',
  'node_shared%': 'false',
  'force_dynamic_crt%': 0,
+ 'ossfuzz' : 'false',
  'node_module_version%': '',
  'node_shared_brotli%': 'false',
  'node_shared_zlib%': 'false',
@@ -1169,6 +1170,38 @@
  } ],
  ]
  }, # specialize_node_d
+ { # fuzz_url
+ 'target_name': 'fuzz_url',
+ 'type': 'executable',
+ 'dependencies': [
+ '<(node_lib_target_name)',
+ ],
+ 'includes': [
+ 'node.gypi'
+ ],
+ 'include_dirs': [
+ 'src',
+ ],
+ 'defines': [
+ 'NODE_ARCH="<(target_arch)"',
+ 'NODE_PLATFORM="<(OS)"',
+ 'NODE_WANT_INTERNALS=1',
+ ],
+ 'sources': [
+ 'src/node_snapshot_stub.cc',
+ 'src/node_code_cache_stub.cc',
+ 'test/fuzzers/fuzz_url.cc',
+ ],
+ 'conditions': [
+ ['OS=="linux"', {
+ 'ldflags': [ '-fsanitize=fuzzer' ]
+ }],
+ # Ensure that ossfuzz flag has been set and that we are on Linux
+ [ 'OS!="linux" or ossfuzz!="true"', {
+ 'type': 'none',
+ }],
+ ],
+ }, # fuzz_url
  {
  'target_name': 'cctest',
  'type': 'executable',

test/fuzzers/fuzz_url.cc

@@ -0,0 +1,11 @@
+#include <stdlib.h>
+
+#include "node.h"
+#include "node_internals.h"
+#include "node_url.h"
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+ node::url::URL url2(reinterpret_cast<const char*>(data), size);
+
+ return 0;
+}