From aa118642aaf1612598f6dfe4bbb484803cc96929 Mon Sep 17 00:00:00 2001
From: Brian Gianforcaro <bgianf@serenityos.org>
Date: Sat, 18 Sep 2021 10:02:52 -0700
Subject: [PATCH] Lagom/Fuzzers: Add fuzzer for the LibCrypto PEM parser

---
 Meta/Lagom/Fuzzers/CMakeLists.txt |  1 +
 Meta/Lagom/Fuzzers/FuzzPEM.cpp    | 15 +++++++++++++++
 2 files changed, 16 insertions(+)
 create mode 100644 Meta/Lagom/Fuzzers/FuzzPEM.cpp

diff --git a/Meta/Lagom/Fuzzers/CMakeLists.txt b/Meta/Lagom/Fuzzers/CMakeLists.txt
index d84f741529a..ffd286a893a 100644
--- a/Meta/Lagom/Fuzzers/CMakeLists.txt
+++ b/Meta/Lagom/Fuzzers/CMakeLists.txt
@@ -28,6 +28,7 @@ add_simple_fuzzer(FuzzGzipDecompression LagomCompress)
 add_simple_fuzzer(FuzzICOLoader LagomGfx)
 add_simple_fuzzer(FuzzJPGLoader LagomGfx)
 add_simple_fuzzer(FuzzMD5 LagomCrypto)
+add_simple_fuzzer(FuzzPEM LagomCrypto)
 add_simple_fuzzer(FuzzPNGLoader LagomGfx)
 add_simple_fuzzer(FuzzPBMLoader LagomGfx)
 add_simple_fuzzer(FuzzPGMLoader LagomGfx)
diff --git a/Meta/Lagom/Fuzzers/FuzzPEM.cpp b/Meta/Lagom/Fuzzers/FuzzPEM.cpp
new file mode 100644
index 00000000000..cf950ebda0a
--- /dev/null
+++ b/Meta/Lagom/Fuzzers/FuzzPEM.cpp
@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) 2021, Brian Gianforcaro <bgianf@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibCrypto/ASN1/PEM.h>
+#include <stddef.h>
+#include <stdint.h>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
+{
+    (void)Crypto::decode_pem({ data, size });
+    return 0;
+}