From 85303b8c22cfd64fac9d09214a77ddb0d30fc454 Mon Sep 17 00:00:00 2001
From: David Korczynski <david@adalogics.com>
Date: Sat, 11 May 2024 07:14:18 -0700
Subject: [PATCH] Add ClusterFuzzLite integration

Signed-off-by: David Korczynski <david@adalogics.com>
---
 .clusterfuzzlite/Dockerfile     |  8 +++++++
 .clusterfuzzlite/build.sh       | 10 +++++++++
 .clusterfuzzlite/fuzzer.c       | 39 +++++++++++++++++++++++++++++++++
 .clusterfuzzlite/project.yaml   |  1 +
 .github/workflows/cflite_pr.yml | 30 +++++++++++++++++++++++++
 5 files changed, 88 insertions(+)
 create mode 100644 .clusterfuzzlite/Dockerfile
 create mode 100644 .clusterfuzzlite/build.sh
 create mode 100644 .clusterfuzzlite/fuzzer.c
 create mode 100644 .clusterfuzzlite/project.yaml
 create mode 100644 .github/workflows/cflite_pr.yml

diff --git a/.clusterfuzzlite/Dockerfile b/.clusterfuzzlite/Dockerfile
new file mode 100644
index 0000000..96f891f
--- /dev/null
+++ b/.clusterfuzzlite/Dockerfile
@@ -0,0 +1,8 @@
+FROM gcr.io/oss-fuzz-base/base-builder
+RUN apt-get update && apt-get install -y make autoconf automake libtool cmake \
+                      pkg-config curl check
+COPY . $SRC/parson
+COPY .clusterfuzzlite/build.sh $SRC/build.sh
+COPY .clusterfuzzlite/*.cpp $SRC/
+COPY .clusterfuzzlite/*.c $SRC/
+WORKDIR parson
diff --git a/.clusterfuzzlite/build.sh b/.clusterfuzzlite/build.sh
new file mode 100644
index 0000000..bd8932a
--- /dev/null
+++ b/.clusterfuzzlite/build.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+for file in "parson.c"; do
+  $CC $CFLAGS -c ${file}
+done
+
+rm -f ./test*.o
+llvm-ar rcs libfuzz.a *.o
+
+
+$CC $CFLAGS $LIB_FUZZING_ENGINE $SRC/fuzzer.c -Wl,--whole-archive $SRC/parson/libfuzz.a -Wl,--allow-multiple-definition -I$SRC/parson/  -o $OUT/fuzzer
\ No newline at end of file
diff --git a/.clusterfuzzlite/fuzzer.c b/.clusterfuzzlite/fuzzer.c
new file mode 100644
index 0000000..71c1592
--- /dev/null
+++ b/.clusterfuzzlite/fuzzer.c
@@ -0,0 +1,39 @@
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "parson.h"
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+    if (size < 1) {
+        return 0;
+    }
+
+    // Creating a fake JSON string from input data
+    char *json_str = (char*)malloc(size + 1);
+    if (json_str == NULL) {
+        return 0;
+    }
+    memcpy(json_str, data, size);
+    json_str[size] = '\0';
+
+    // Creating a fake JSON_Value from the JSON string
+    JSON_Value *json_val = json_parse_string(json_str);
+    if (json_val == NULL) {
+        free(json_str);
+        return 0;
+    }
+
+    // Fake file name
+    const char *file_name = "output.json";
+
+    // Calling the target function with the fake JSON_Value and file name
+    json_serialize_to_file_pretty(json_val, file_name);
+
+    // Cleanup
+    json_value_free(json_val);
+    free(json_str);
+
+    return 0;
+}
diff --git a/.clusterfuzzlite/project.yaml b/.clusterfuzzlite/project.yaml
new file mode 100644
index 0000000..b455aa3
--- /dev/null
+++ b/.clusterfuzzlite/project.yaml
@@ -0,0 +1 @@
+language: c
diff --git a/.github/workflows/cflite_pr.yml b/.github/workflows/cflite_pr.yml
new file mode 100644
index 0000000..a6ddd01
--- /dev/null
+++ b/.github/workflows/cflite_pr.yml
@@ -0,0 +1,30 @@
+name: ClusterFuzzLite PR fuzzing
+on:
+  workflow_dispatch:
+  pull_request:
+    branches: [ master ]
+permissions: read-all
+jobs:
+  PR:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        sanitizer: [address]
+    steps:
+    - name: Build Fuzzers (${{ matrix.sanitizer }})
+      id: build
+      uses: google/clusterfuzzlite/actions/build_fuzzers@v1
+      with:
+        sanitizer: ${{ matrix.sanitizer }}
+        language: c++
+        bad-build-check: false
+    - name: Run Fuzzers (${{ matrix.sanitizer }})
+      id: run
+      uses: google/clusterfuzzlite/actions/run_fuzzers@v1
+      with:
+        github-token: ${{ secrets.GITHUB_TOKEN }}
+        fuzz-seconds: 100
+        mode: 'code-change'
+        report-unreproducible-crashes: false
+        sanitizer: ${{ matrix.sanitizer }}