1 files changed, 263 insertions, 0 deletions
diff --git a/uriloader/exthandler/ContentHandlerService.cpp b/uriloader/exthandler/ContentHandlerService.cpp
new file mode 100644
index 0000000000..599185bcd0
--- /dev/null
+++ b/uriloader/exthandler/ContentHandlerService.cpp
@@ -0,0 +1,263 @@
+/* -*- 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 http://mozilla.org/MPL/2.0/. */
+
+#include "ContentHandlerService.h"
+#include "HandlerServiceChild.h"
+#include "ContentChild.h"
+#include "nsIMutableArray.h"
+#include "nsIMIMEInfo.h"
+#include "nsIStringEnumerator.h"
+#include "nsReadableUtils.h"
+#include "nsMIMEInfoImpl.h"
+#include "nsMIMEInfoChild.h"
+
+using mozilla::dom::ContentChild;
+using mozilla::dom::HandlerInfo;
+using mozilla::dom::PHandlerServiceChild;
+
+namespace mozilla {
+namespace dom {
+
+NS_IMPL_ISUPPORTS(ContentHandlerService, nsIHandlerService)
+
+ContentHandlerService::ContentHandlerService() {}
+
+/* static */ already_AddRefed<nsIHandlerService>
+ContentHandlerService::Create() {
+  if (XRE_IsContentProcess()) {
+    RefPtr service = new ContentHandlerService();
+    if (NS_SUCCEEDED(service->Init())) {
+      return service.forget();
+    }
+    return nullptr;
+  }
+
+  nsCOMPtr<nsIHandlerService> service =
+      do_GetService("@mozilla.org/uriloader/handler-service-parent;1");
+  return service.forget();
+}
+
+nsresult ContentHandlerService::Init() {
+  if (!XRE_IsContentProcess()) {
+    return NS_ERROR_FAILURE;
+  }
+  ContentChild* cpc = ContentChild::GetSingleton();
+
+  mHandlerServiceChild = new HandlerServiceChild();
+  if (!cpc->SendPHandlerServiceConstructor(mHandlerServiceChild)) {
+    mHandlerServiceChild = nullptr;
+    return NS_ERROR_UNEXPECTED;
+  }
+  return NS_OK;
+}
+
+void ContentHandlerService::nsIHandlerInfoToHandlerInfo(
+    nsIHandlerInfo* aInfo, HandlerInfo* aHandlerInfo) {
+  nsCString type;
+  aInfo->GetType(type);
+  nsCOMPtr<nsIMIMEInfo> mimeInfo = do_QueryInterface(aInfo);
+  bool isMIMEInfo = !!mimeInfo;
+  nsString description;
+  aInfo->GetDescription(description);
+  bool alwaysAskBeforeHandling;
+  aInfo->GetAlwaysAskBeforeHandling(&alwaysAskBeforeHandling);
+  nsCOMPtr<nsIHandlerApp> app;
+  aInfo->GetPreferredApplicationHandler(getter_AddRefs(app));
+  nsString name;
+  nsString detailedDescription;
+  if (app) {
+    app->GetName(name);
+    app->GetDetailedDescription(detailedDescription);
+  }
+  HandlerApp happ(name, detailedDescription);
+  nsTArray<HandlerApp> happs;
+  nsCOMPtr<nsIMutableArray> apps;
+  aInfo->GetPossibleApplicationHandlers(getter_AddRefs(apps));
+  if (apps) {
+    unsigned int length;
+    apps->GetLength(&length);
+    for (unsigned int i = 0; i < length; i++) {
+      apps->QueryElementAt(i, NS_GET_IID(nsIHandlerApp), getter_AddRefs(app));
+      app->GetName(name);
+      app->GetDetailedDescription(detailedDescription);
+      happs.AppendElement(HandlerApp(name, detailedDescription));
+    }
+  }
+
+  nsTArray<nsCString> extensions;
+
+  if (isMIMEInfo) {
+    nsCOMPtr<nsIUTF8StringEnumerator> extensionsIter;
+    mimeInfo->GetFileExtensions(getter_AddRefs(extensionsIter));
+    if (extensionsIter) {
+      bool hasMore = false;
+      while (NS_SUCCEEDED(extensionsIter->HasMore(&hasMore)) && hasMore) {
+        nsAutoCString extension;
+        if (NS_SUCCEEDED(extensionsIter->GetNext(extension))) {
+          extensions.AppendElement(std::move(extension));
+        }
+      }
+    }
+  }
+
+  nsHandlerInfoAction action;
+  aInfo->GetPreferredAction(&action);
+  HandlerInfo info(type, isMIMEInfo, description, alwaysAskBeforeHandling,
+                   std::move(extensions), happ, happs, action);
+  *aHandlerInfo = info;
+}
+
+NS_IMETHODIMP RemoteHandlerApp::GetName(nsAString& aName) {
+  aName.Assign(mAppChild.name());
+  return NS_OK;
+}
+
+NS_IMETHODIMP RemoteHandlerApp::SetName(const nsAString& aName) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP RemoteHandlerApp::GetDetailedDescription(
+    nsAString& aDetailedDescription) {
+  aDetailedDescription.Assign(mAppChild.detailedDescription());
+  return NS_OK;
+}
+
+NS_IMETHODIMP RemoteHandlerApp::SetDetailedDescription(
+    const nsAString& aDetailedDescription) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP RemoteHandlerApp::Equals(nsIHandlerApp* aHandlerApp,
+                                       bool* _retval) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP RemoteHandlerApp::LaunchWithURI(
+    nsIURI* aURI, BrowsingContext* aBrowsingContext) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMPL_ISUPPORTS(RemoteHandlerApp, nsIHandlerApp)
+
+static inline void CopyHandlerInfoTonsIHandlerInfo(
+    const HandlerInfo& info, nsIHandlerInfo* aHandlerInfo) {
+  HandlerApp preferredApplicationHandler = info.preferredApplicationHandler();
+  nsCOMPtr<nsIHandlerApp> preferredApp(
+      new RemoteHandlerApp(preferredApplicationHandler));
+  aHandlerInfo->SetPreferredApplicationHandler(preferredApp);
+  nsCOMPtr<nsIMutableArray> possibleHandlers;
+  aHandlerInfo->GetPossibleApplicationHandlers(
+      getter_AddRefs(possibleHandlers));
+  possibleHandlers->AppendElement(preferredApp);
+
+  aHandlerInfo->SetPreferredAction(info.preferredAction());
+  aHandlerInfo->SetAlwaysAskBeforeHandling(info.alwaysAskBeforeHandling());
+
+  if (info.isMIMEInfo()) {
+    nsCOMPtr<nsIMIMEInfo> mimeInfo(do_QueryInterface(aHandlerInfo));
+    MOZ_ASSERT(mimeInfo,
+               "parent and child don't agree on whether this is a MIME info");
+    mimeInfo->SetFileExtensions(StringJoin(","_ns, info.extensions()));
+  }
+}
+
+ContentHandlerService::~ContentHandlerService() {}
+
+NS_IMETHODIMP ContentHandlerService::AsyncInit() {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP ContentHandlerService::Enumerate(nsISimpleEnumerator** _retval) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP ContentHandlerService::FillHandlerInfo(
+    nsIHandlerInfo* aHandlerInfo, const nsACString& aOverrideType) {
+  HandlerInfo info, returnedInfo;
+  nsIHandlerInfoToHandlerInfo(aHandlerInfo, &info);
+  mHandlerServiceChild->SendFillHandlerInfo(info, aOverrideType, &returnedInfo);
+  CopyHandlerInfoTonsIHandlerInfo(returnedInfo, aHandlerInfo);
+  return NS_OK;
+}
+
+NS_IMETHODIMP ContentHandlerService::GetMIMEInfoFromOS(
+    const nsACString& aMIMEType, const nsACString& aFileExt, bool* aFound,
+    nsIMIMEInfo** aMIMEInfo) {
+  nsresult rv = NS_ERROR_FAILURE;
+  HandlerInfo returnedInfo;
+  if (!mHandlerServiceChild->SendGetMIMEInfoFromOS(aMIMEType, aFileExt, &rv,
+                                                   &returnedInfo, aFound)) {
+    return NS_ERROR_FAILURE;
+  }
+
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  RefPtr<nsChildProcessMIMEInfo> mimeInfo =
+      new nsChildProcessMIMEInfo(returnedInfo.type());
+  CopyHandlerInfoTonsIHandlerInfo(returnedInfo, mimeInfo);
+  mimeInfo.forget(aMIMEInfo);
+  return NS_OK;
+}
+
+NS_IMETHODIMP ContentHandlerService::Store(nsIHandlerInfo* aHandlerInfo) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP ContentHandlerService::Exists(nsIHandlerInfo* aHandlerInfo,
+                                            bool* _retval) {
+  HandlerInfo info;
+  nsIHandlerInfoToHandlerInfo(aHandlerInfo, &info);
+  mHandlerServiceChild->SendExists(info, _retval);
+  return NS_OK;
+}
+
+NS_IMETHODIMP ContentHandlerService::Remove(nsIHandlerInfo* aHandlerInfo) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+ContentHandlerService::ExistsForProtocolOS(const nsACString& aProtocolScheme,
+                                           bool* aRetval) {
+  if (!mHandlerServiceChild->SendExistsForProtocolOS(aProtocolScheme,
+                                                     aRetval)) {
+    return NS_ERROR_FAILURE;
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+ContentHandlerService::ExistsForProtocol(const nsACString& aProtocolScheme,
+                                         bool* aRetval) {
+  if (!mHandlerServiceChild->SendExistsForProtocol(aProtocolScheme, aRetval)) {
+    return NS_ERROR_FAILURE;
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP ContentHandlerService::GetTypeFromExtension(
+    const nsACString& aFileExtension, nsACString& _retval) {
+  _retval.Assign(*mExtToTypeMap.LookupOrInsertWith(aFileExtension, [&] {
+    nsCString type;
+    mHandlerServiceChild->SendGetTypeFromExtension(aFileExtension, &type);
+    return MakeUnique<nsCString>(type);
+  }));
+  return NS_OK;
+}
+
+NS_IMETHODIMP ContentHandlerService::GetApplicationDescription(
+    const nsACString& aProtocolScheme, nsAString& aRetVal) {
+  nsresult rv = NS_ERROR_FAILURE;
+  nsAutoCString scheme(aProtocolScheme);
+  nsAutoString desc;
+  mHandlerServiceChild->SendGetApplicationDescription(scheme, &rv, &desc);
+  aRetVal.Assign(desc);
+  return rv;
+}
+
+}  // namespace dom
+}  // namespace mozilla