/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* 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/. */ // See also: docshell/base/nsAboutRedirector.cpp #include "AboutRedirector.h" #include "nsNetUtil.h" #include "nsIAboutNewTabService.h" #include "nsIChannel.h" #include "nsIURI.h" #include "nsIScriptSecurityManager.h" #include "nsIProtocolHandler.h" #include "mozilla/ArrayUtils.h" #include "mozilla/Preferences.h" #include "nsServiceManagerUtils.h" namespace mozilla { namespace browser { NS_IMPL_ISUPPORTS(AboutRedirector, nsIAboutModule) bool AboutRedirector::sActivityStreamEnabled = false; bool AboutRedirector::sActivityStreamAboutHomeEnabled = false; struct RedirEntry { const char* id; const char* url; uint32_t flags; }; /* Entries which do not have URI_SAFE_FOR_UNTRUSTED_CONTENT will run with chrome privileges. This is potentially dangerous. Please use URI_SAFE_FOR_UNTRUSTED_CONTENT in the third argument to each map item below unless your about: page really needs chrome privileges. Security review is required before adding new map entries without URI_SAFE_FOR_UNTRUSTED_CONTENT. */ static const RedirEntry kRedirMap[] = { { "blocked", "chrome://browser/content/blockedSite.xhtml", nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT | nsIAboutModule::URI_CAN_LOAD_IN_CHILD | nsIAboutModule::ALLOW_SCRIPT | nsIAboutModule::HIDE_FROM_ABOUTABOUT }, { "certerror", "chrome://browser/content/aboutNetError.xhtml", nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT | nsIAboutModule::URI_CAN_LOAD_IN_CHILD | nsIAboutModule::ALLOW_SCRIPT | nsIAboutModule::HIDE_FROM_ABOUTABOUT }, { "tabcrashed", "chrome://browser/content/aboutTabCrashed.xhtml", nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT | nsIAboutModule::ALLOW_SCRIPT | nsIAboutModule::HIDE_FROM_ABOUTABOUT }, { "feeds", "chrome://browser/content/feeds/subscribe.xhtml", nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT | nsIAboutModule::ALLOW_SCRIPT | nsIAboutModule::HIDE_FROM_ABOUTABOUT }, { "privatebrowsing", "chrome://browser/content/aboutPrivateBrowsing.xhtml", nsIAboutModule::URI_MUST_LOAD_IN_CHILD | nsIAboutModule::ALLOW_SCRIPT }, { "rights", "chrome://global/content/aboutRights.xhtml", nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT | nsIAboutModule::MAKE_LINKABLE | nsIAboutModule::ALLOW_SCRIPT }, { "robots", "chrome://browser/content/aboutRobots.xhtml", nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT | nsIAboutModule::ALLOW_SCRIPT }, { "searchreset", "chrome://browser/content/search/searchReset.xhtml", nsIAboutModule::ALLOW_SCRIPT | nsIAboutModule::HIDE_FROM_ABOUTABOUT }, { "sessionrestore", "chrome://browser/content/aboutSessionRestore.xhtml", nsIAboutModule::ALLOW_SCRIPT | nsIAboutModule::HIDE_FROM_ABOUTABOUT }, { "welcomeback", "chrome://browser/content/aboutWelcomeBack.xhtml", nsIAboutModule::ALLOW_SCRIPT | nsIAboutModule::HIDE_FROM_ABOUTABOUT }, // Linkable because of indexeddb use (bug 1228118) { "home", "chrome://browser/content/abouthome/aboutHome.xhtml", nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT | nsIAboutModule::URI_MUST_LOAD_IN_CHILD | nsIAboutModule::ALLOW_SCRIPT | nsIAboutModule::MAKE_LINKABLE | nsIAboutModule::ENABLE_INDEXED_DB }, // the newtab's actual URL will be determined when the channel is created { "newtab", "about:blank", nsIAboutModule::ALLOW_SCRIPT }, { "preferences", "chrome://browser/content/preferences/in-content/preferences.xul", nsIAboutModule::ALLOW_SCRIPT }, { "downloads", "chrome://browser/content/downloads/contentAreaDownloadsView.xul", nsIAboutModule::ALLOW_SCRIPT }, { "reader", "chrome://global/content/reader/aboutReader.html", nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT | nsIAboutModule::ALLOW_SCRIPT | nsIAboutModule::URI_MUST_LOAD_IN_CHILD | nsIAboutModule::HIDE_FROM_ABOUTABOUT }, }; static nsAutoCString GetAboutModuleName(nsIURI *aURI) { nsAutoCString path; aURI->GetPathQueryRef(path); int32_t f = path.FindChar('#'); if (f >= 0) path.SetLength(f); f = path.FindChar('?'); if (f >= 0) path.SetLength(f); ToLowerCase(path); return path; } void AboutRedirector::LoadActivityStreamPrefs() { static bool sASEnabledCacheInited = false; if (!sASEnabledCacheInited) { Preferences::AddBoolVarCache(&AboutRedirector::sActivityStreamEnabled, "browser.newtabpage.activity-stream.enabled"); Preferences::AddBoolVarCache(&AboutRedirector::sActivityStreamAboutHomeEnabled, "browser.newtabpage.activity-stream.aboutHome.enabled"); sASEnabledCacheInited = true; } } NS_IMETHODIMP AboutRedirector::NewChannel(nsIURI* aURI, nsILoadInfo* aLoadInfo, nsIChannel** result) { NS_ENSURE_ARG_POINTER(aURI); NS_ENSURE_ARG_POINTER(aLoadInfo); NS_ASSERTION(result, "must not be null"); nsAutoCString path = GetAboutModuleName(aURI); nsresult rv; nsCOMPtr ioService = do_GetIOService(&rv); NS_ENSURE_SUCCESS(rv, rv); LoadActivityStreamPrefs(); for (auto & redir : kRedirMap) { if (!strcmp(path.get(), redir.id)) { nsAutoCString url; if (path.EqualsLiteral("newtab") || (path.EqualsLiteral("home") && sActivityStreamEnabled && sActivityStreamAboutHomeEnabled)) { // let the aboutNewTabService decide where to redirect nsCOMPtr aboutNewTabService = do_GetService("@mozilla.org/browser/aboutnewtab-service;1", &rv); NS_ENSURE_SUCCESS(rv, rv); rv = aboutNewTabService->GetDefaultURL(url); NS_ENSURE_SUCCESS(rv, rv); } // fall back to the specified url in the map if (url.IsEmpty()) { url.AssignASCII(redir.url); } nsCOMPtr tempChannel; nsCOMPtr tempURI; rv = NS_NewURI(getter_AddRefs(tempURI), url); NS_ENSURE_SUCCESS(rv, rv); // If tempURI links to an external URI (i.e. something other than // chrome:// or resource://) then set the result principal URI on the // load info which forces the channel prncipal to reflect the displayed // URL rather then being the systemPrincipal. bool isUIResource = false; rv = NS_URIChainHasFlags(tempURI, nsIProtocolHandler::URI_IS_UI_RESOURCE, &isUIResource); NS_ENSURE_SUCCESS(rv, rv); rv = NS_NewChannelInternal(getter_AddRefs(tempChannel), tempURI, aLoadInfo); NS_ENSURE_SUCCESS(rv, rv); if (!isUIResource) { aLoadInfo->SetResultPrincipalURI(tempURI); } tempChannel->SetOriginalURI(aURI); NS_ADDREF(*result = tempChannel); return rv; } } return NS_ERROR_ILLEGAL_VALUE; } NS_IMETHODIMP AboutRedirector::GetURIFlags(nsIURI *aURI, uint32_t *result) { NS_ENSURE_ARG_POINTER(aURI); nsAutoCString name = GetAboutModuleName(aURI); LoadActivityStreamPrefs(); for (auto & redir : kRedirMap) { if (name.Equals(redir.id)) { // Once ActivityStream is fully rolled out and we've removed Tiles, // this special case can go away and the flag can just become part // of the normal about:newtab entry in kRedirMap. if (name.EqualsLiteral("newtab") || (name.EqualsLiteral("home") && sActivityStreamAboutHomeEnabled)) { if (sActivityStreamEnabled) { *result = redir.flags | nsIAboutModule::URI_MUST_LOAD_IN_CHILD | nsIAboutModule::ENABLE_INDEXED_DB | nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT; return NS_OK; } } *result = redir.flags; return NS_OK; } } return NS_ERROR_ILLEGAL_VALUE; } nsresult AboutRedirector::Create(nsISupports *aOuter, REFNSIID aIID, void **result) { AboutRedirector* about = new AboutRedirector(); if (about == nullptr) return NS_ERROR_OUT_OF_MEMORY; NS_ADDREF(about); nsresult rv = about->QueryInterface(aIID, result); NS_RELEASE(about); return rv; } } // namespace browser } // namespace mozilla