From 1e0815083881f509893d320c87d0d470cad35d2d Mon Sep 17 00:00:00 2001
From: Chris Wolfe <chriswwolfe@gmail.com>
Date: Mon, 5 Feb 2018 19:24:51 -0600
Subject: [PATCH] pull in fuzzers, add CI scripts later

---
 ChangeLog                         |  3 +++
 fuzz/README.md                    |  6 ++++++
 fuzz/build.sh                     | 30 ++++++++++++++++++++++++++++++
 fuzz/tokener_parse_ex_fuzzer.cc   | 13 +++++++++++++
 fuzz/tokener_parse_ex_fuzzer.dict | 18 ++++++++++++++++++
 5 files changed, 70 insertions(+)
 create mode 100644 fuzz/README.md
 create mode 100755 fuzz/build.sh
 create mode 100644 fuzz/tokener_parse_ex_fuzzer.cc
 create mode 100644 fuzz/tokener_parse_ex_fuzzer.dict

diff --git a/ChangeLog b/ChangeLog
index 5dd29ab..8f8aa8d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -9,6 +9,9 @@ Deprecated and removed features:
 * lh_table_lookup() has been removed, use lh_table_lookup_ex() instead.
 * Remove TRUE and FALSE defines, use 1 and 0 instead.
 
+Build changes:
+--------------
+* Add a top level fuzz directory for fuzzers run by OSS-Fuzz
 
 0.13 (up to commit 5dae561, 2017/11/29)
 =================================
diff --git a/fuzz/README.md b/fuzz/README.md
new file mode 100644
index 0000000..237c1da
--- /dev/null
+++ b/fuzz/README.md
@@ -0,0 +1,6 @@
+# Fuzzers
+
+This directory contains fuzzers that
+target [llvm's LibFuzzer](https://llvm.org/docs/LibFuzzer.html). They are built
+and run automatically by
+Google's [OSS-Fuzz](https://github.com/google/oss-fuzz/) infrastructure.
diff --git a/fuzz/build.sh b/fuzz/build.sh
new file mode 100755
index 0000000..30c3f77
--- /dev/null
+++ b/fuzz/build.sh
@@ -0,0 +1,30 @@
+#!/bin/bash -eu
+# Copyright 2018 Google Inc.
+#
+# 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.
+#
+################################################################################
+
+./autogen.sh
+./configure --enable-static --disable-shared
+make -j$(nproc) all
+ar rc json_c.a *.o
+
+cp $SRC/*.dict $OUT/
+
+for f in $SRC/*_fuzzer.cc; do
+    fuzzer=$(basename "$f" _fuzzer.cc)
+    $CXX $CXXFLAGS -std=c++11 -I$SRC/json-c \
+         $SRC/${fuzzer}_fuzzer.cc -o $OUT/${fuzzer}_fuzzer \
+         -lFuzzingEngine $SRC/json-c/json_c.a
+done
diff --git a/fuzz/tokener_parse_ex_fuzzer.cc b/fuzz/tokener_parse_ex_fuzzer.cc
new file mode 100644
index 0000000..c0a1c3d
--- /dev/null
+++ b/fuzz/tokener_parse_ex_fuzzer.cc
@@ -0,0 +1,13 @@
+#include <stdint.h>
+
+#include <json.h>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+  const char *data1 = reinterpret_cast<const char *>(data);
+  json_tokener *tok = json_tokener_new();
+  json_object *obj = json_tokener_parse_ex(tok, data1, size);
+
+  json_object_put(obj);
+  json_tokener_free(tok);
+  return 0;
+}
diff --git a/fuzz/tokener_parse_ex_fuzzer.dict b/fuzz/tokener_parse_ex_fuzzer.dict
new file mode 100644
index 0000000..23c6fa2
--- /dev/null
+++ b/fuzz/tokener_parse_ex_fuzzer.dict
@@ -0,0 +1,18 @@
+"{"
+"}"
+","
+"["
+"]"
+","
+":"
+"e"
+"e+"
+"e-"
+"E"
+"E+"
+"E-"
+"\""
+"null"
+"1"
+"1.234"
+"3e4"
-- 
2.50.0