From bcc68cca4c77f4556ecfce45c0129868aeaf46b2 Mon Sep 17 00:00:00 2001
From: David Korczynski <david@adalogics.com>
Date: Thu, 21 Dec 2023 04:19:45 -0800
Subject: [PATCH] Add ClusterFuzzLite integration

Signed-off-by: David Korczynski <david@adalogics.com>
---
 .clusterfuzzlite/Dockerfile          |  6 ++++++
 .clusterfuzzlite/README.md           |  3 +++
 .clusterfuzzlite/build.sh            |  5 +++++
 .clusterfuzzlite/fast_obj_fuzzer.cpp | 27 +++++++++++++++++++++++++
 .clusterfuzzlite/project.yaml        |  1 +
 .github/workflows/cflite_pr.yml      | 30 ++++++++++++++++++++++++++++
 6 files changed, 72 insertions(+)
 create mode 100644 .clusterfuzzlite/Dockerfile
 create mode 100644 .clusterfuzzlite/README.md
 create mode 100644 .clusterfuzzlite/build.sh
 create mode 100644 .clusterfuzzlite/fast_obj_fuzzer.cpp
 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..cb89ae7
--- /dev/null
+++ b/.clusterfuzzlite/Dockerfile
@@ -0,0 +1,6 @@
+FROM gcr.io/oss-fuzz-base/base-builder
+RUN apt-get update && apt-get install -y make autoconf automake libtool
+
+COPY . $SRC/fast_obj
+COPY .clusterfuzzlite/build.sh $SRC/build.sh
+WORKDIR $SRC/fast_obj
\ No newline at end of file
diff --git a/.clusterfuzzlite/README.md b/.clusterfuzzlite/README.md
new file mode 100644
index 0000000..6bb7ef1
--- /dev/null
+++ b/.clusterfuzzlite/README.md
@@ -0,0 +1,3 @@
+# ClusterFuzzLite set up
+
+This folder contains a fuzzing set for [ClusterFuzzLite](https://google.github.io/clusterfuzzlite).        
\ No newline at end of file
diff --git a/.clusterfuzzlite/build.sh b/.clusterfuzzlite/build.sh
new file mode 100644
index 0000000..a11ead3
--- /dev/null
+++ b/.clusterfuzzlite/build.sh
@@ -0,0 +1,5 @@
+#!/bin/bash -eu
+$CXX $CFLAGS $LIB_FUZZING_ENGINE \
+  $SRC/fast_obj/.clusterfuzzlite/fast_obj_fuzzer.cpp \
+  -o $OUT/fast_obj_fuzzer \
+  -I$SRC/fast_obj
\ No newline at end of file
diff --git a/.clusterfuzzlite/fast_obj_fuzzer.cpp b/.clusterfuzzlite/fast_obj_fuzzer.cpp
new file mode 100644
index 0000000..a625db1
--- /dev/null
+++ b/.clusterfuzzlite/fast_obj_fuzzer.cpp
@@ -0,0 +1,27 @@
+#define FAST_OBJ_IMPLEMENTATION
+#include "fast_obj.h"
+
+#include <string>
+#include <sys/types.h>
+#include <unistd.h>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+  char filename[256];
+  sprintf(filename, "/tmp/libfuzzer.%d", getpid());
+
+  FILE *fp = fopen(filename, "wb");
+  if (!fp)
+    return 0;
+  fwrite(data, size, 1, fp);
+  fclose(fp);
+
+  fastObjMesh *m = fast_obj_read(filename);
+  if (!m) {
+    unlink(filename);
+    return 0;
+  }
+
+  fast_obj_destroy(m);
+  unlink(filename);
+  return 0;
+}
\ No newline at end of file
diff --git a/.clusterfuzzlite/project.yaml b/.clusterfuzzlite/project.yaml
new file mode 100644
index 0000000..7f563eb
--- /dev/null
+++ b/.clusterfuzzlite/project.yaml
@@ -0,0 +1 @@
+language: c++
\ No newline at end of file
diff --git a/.github/workflows/cflite_pr.yml b/.github/workflows/cflite_pr.yml
new file mode 100644
index 0000000..d0bce9d
--- /dev/null
+++ b/.github/workflows/cflite_pr.yml
@@ -0,0 +1,30 @@
+name: ClusterFuzzLite PR fuzzing
+on:
+  workflow_dispatch:
+  pull_request:
+    branches: [ main ]      
+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 }}
\ No newline at end of file