1 files changed, 41 insertions, 0 deletions
diff --git a/dom/security/fuzztest/csp_fuzzer.cpp b/dom/security/fuzztest/csp_fuzzer.cpp
new file mode 100644
index 0000000000..24f938cb1f
--- /dev/null
+++ b/dom/security/fuzztest/csp_fuzzer.cpp
@@ -0,0 +1,41 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+#include "FuzzingInterface.h"
+#include "mozilla/BasePrincipal.h"
+#include "nsComponentManagerUtils.h"
+#include "nsCSPContext.h"
+#include "nsNetUtil.h"
+#include "nsStringFwd.h"
+
+static int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+  nsresult ret;
+  nsCOMPtr<nsIURI> selfURI;
+  ret = NS_NewURI(getter_AddRefs(selfURI), "http://selfuri.com");
+  if (ret != NS_OK) return 0;
+
+  mozilla::OriginAttributes attrs;
+  nsCOMPtr<nsIPrincipal> selfURIPrincipal =
+      mozilla::BasePrincipal::CreateContentPrincipal(selfURI, attrs);
+  if (!selfURIPrincipal) return 0;
+
+  nsCOMPtr<nsIContentSecurityPolicy> csp =
+      do_CreateInstance(NS_CSPCONTEXT_CONTRACTID, &ret);
+  if (ret != NS_OK) return 0;
+
+  ret =
+      csp->SetRequestContextWithPrincipal(selfURIPrincipal, selfURI, u""_ns, 0);
+  if (ret != NS_OK) return 0;
+
+  NS_ConvertASCIItoUTF16 policy(reinterpret_cast<const char*>(data), size);
+  if (!policy.get()) return 0;
+  csp->AppendPolicy(policy, false, false);
+
+  return 0;
+}
+
+MOZ_FUZZING_INTERFACE_RAW(nullptr, LLVMFuzzerTestOneInput,
+                          ContentSecurityPolicyParser);