1 files changed, 141 insertions, 0 deletions
diff --git a/netwerk/protocol/viewsource/nsViewSourceHandler.cpp b/netwerk/protocol/viewsource/nsViewSourceHandler.cpp
new file mode 100644
index 0000000000..f7b440d4d7
--- /dev/null
+++ b/netwerk/protocol/viewsource/nsViewSourceHandler.cpp
@@ -0,0 +1,141 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=4 sw=2 sts=2 et: */
+/* 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 http://mozilla.org/MPL/2.0/. */
+
+#include "nsViewSourceHandler.h"
+#include "nsViewSourceChannel.h"
+#include "nsNetUtil.h"
+#include "nsSimpleNestedURI.h"
+
+#define VIEW_SOURCE "view-source"
+
+#define DEFAULT_FLAGS \
+  (URI_NORELATIVE | URI_NOAUTH | URI_DANGEROUS_TO_LOAD | URI_NON_PERSISTABLE)
+
+namespace mozilla {
+namespace net {
+
+////////////////////////////////////////////////////////////////////////////////
+
+NS_IMPL_ISUPPORTS(nsViewSourceHandler, nsIProtocolHandler,
+                  nsIProtocolHandlerWithDynamicFlags)
+
+////////////////////////////////////////////////////////////////////////////////
+// nsIProtocolHandler methods:
+
+NS_IMETHODIMP
+nsViewSourceHandler::GetScheme(nsACString& result) {
+  result.AssignLiteral(VIEW_SOURCE);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsViewSourceHandler::GetFlagsForURI(nsIURI* aURI, uint32_t* result) {
+  *result = DEFAULT_FLAGS;
+  nsCOMPtr<nsINestedURI> nestedURI(do_QueryInterface(aURI));
+  if (!nestedURI) {
+    return NS_OK;
+  }
+
+  nsCOMPtr<nsIURI> innerURI;
+  nestedURI->GetInnerURI(getter_AddRefs(innerURI));
+  nsCOMPtr<nsINetUtil> netUtil = do_GetNetUtil();
+  bool isLoadable = false;
+  nsresult rv =
+      netUtil->ProtocolHasFlags(innerURI, URI_LOADABLE_BY_ANYONE, &isLoadable);
+  NS_ENSURE_SUCCESS(rv, rv);
+  if (isLoadable) {
+    *result |= URI_LOADABLE_BY_EXTENSIONS;
+  }
+  return NS_OK;
+}
+
+// static
+nsresult nsViewSourceHandler::CreateNewURI(const nsACString& aSpec,
+                                           const char* aCharset,
+                                           nsIURI* aBaseURI, nsIURI** aResult) {
+  *aResult = nullptr;
+
+  // Extract inner URL and normalize to ASCII.  This is done to properly
+  // support IDN in cases like "view-source:http://www.szalagavató.hu/"
+
+  int32_t colon = aSpec.FindChar(':');
+  if (colon == kNotFound) return NS_ERROR_MALFORMED_URI;
+
+  nsCOMPtr<nsIURI> innerURI;
+  nsresult rv = NS_NewURI(getter_AddRefs(innerURI), Substring(aSpec, colon + 1),
+                          aCharset, aBaseURI);
+  if (NS_FAILED(rv)) return rv;
+
+  nsAutoCString asciiSpec;
+  rv = innerURI->GetAsciiSpec(asciiSpec);
+  if (NS_FAILED(rv)) return rv;
+
+  // put back our scheme and construct a simple-uri wrapper
+
+  asciiSpec.Insert(VIEW_SOURCE ":", 0);
+
+  nsCOMPtr<nsIURI> uri;
+  rv = NS_MutateURI(new nsSimpleNestedURI::Mutator())
+           .Apply(&nsINestedURIMutator::Init, innerURI)
+           .SetSpec(asciiSpec)
+           .Finalize(uri);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  uri.swap(*aResult);
+  return rv;
+}
+
+NS_IMETHODIMP
+nsViewSourceHandler::NewChannel(nsIURI* uri, nsILoadInfo* aLoadInfo,
+                                nsIChannel** result) {
+  NS_ENSURE_ARG_POINTER(uri);
+  RefPtr<nsViewSourceChannel> channel = new nsViewSourceChannel();
+
+  nsresult rv = channel->Init(uri, aLoadInfo);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  *result = channel.forget().downcast<nsIViewSourceChannel>().take();
+  return NS_OK;
+}
+
+nsresult nsViewSourceHandler::NewSrcdocChannel(nsIURI* aURI, nsIURI* aBaseURI,
+                                               const nsAString& aSrcdoc,
+                                               nsILoadInfo* aLoadInfo,
+                                               nsIChannel** outChannel) {
+  NS_ENSURE_ARG_POINTER(aURI);
+  RefPtr<nsViewSourceChannel> channel = new nsViewSourceChannel();
+
+  nsresult rv = channel->InitSrcdoc(aURI, aBaseURI, aSrcdoc, aLoadInfo);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  *outChannel = static_cast<nsIViewSourceChannel*>(channel.forget().take());
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsViewSourceHandler::AllowPort(int32_t port, const char* scheme,
+                               bool* _retval) {
+  // don't override anything.
+  *_retval = false;
+  return NS_OK;
+}
+
+nsViewSourceHandler::nsViewSourceHandler() { gInstance = this; }
+
+nsViewSourceHandler::~nsViewSourceHandler() { gInstance = nullptr; }
+
+nsViewSourceHandler* nsViewSourceHandler::gInstance = nullptr;
+
+nsViewSourceHandler* nsViewSourceHandler::GetInstance() { return gInstance; }
+
+}  // namespace net
+}  // namespace mozilla