diff options
Diffstat (limited to 'docshell/base/nsAboutRedirector.cpp')
-rw-r--r-- | docshell/base/nsAboutRedirector.cpp | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/docshell/base/nsAboutRedirector.cpp b/docshell/base/nsAboutRedirector.cpp new file mode 100644 index 000000000..f300e0ce2 --- /dev/null +++ b/docshell/base/nsAboutRedirector.cpp @@ -0,0 +1,224 @@ +/* -*- 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 "nsAboutRedirector.h" +#include "nsNetUtil.h" +#include "nsAboutProtocolUtils.h" +#include "mozilla/ArrayUtils.h" +#include "nsIProtocolHandler.h" + +NS_IMPL_ISUPPORTS(nsAboutRedirector, nsIAboutModule) + +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. Also note, however, that adding + URI_SAFE_FOR_UNTRUSTED_CONTENT will allow random web sites to link to that + URI. Perhaps we should separate the two concepts out... + */ +static RedirEntry kRedirMap[] = { + { + "", "chrome://global/content/about.xhtml", + nsIAboutModule::ALLOW_SCRIPT + }, + { "about", "chrome://global/content/aboutAbout.xhtml", 0 }, + { + "addons", "chrome://mozapps/content/extensions/extensions.xul", + nsIAboutModule::ALLOW_SCRIPT + }, + { + "buildconfig", "chrome://global/content/buildconfig.html", + nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT + }, + { + "checkerboard", "chrome://global/content/aboutCheckerboard.xhtml", + nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT | + nsIAboutModule::ALLOW_SCRIPT + }, + { "config", "chrome://global/content/config.xul", 0 }, +#ifdef MOZ_CRASHREPORTER + { "crashes", "chrome://global/content/crashes.xhtml", 0 }, +#endif + { + "credits", "https://www.mozilla.org/credits/", + nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT + }, +#ifdef MOZ_DEVTOOLS_ALL + { + "debugging", "chrome://devtools/content/aboutdebugging/aboutdebugging.xhtml", + nsIAboutModule::ALLOW_SCRIPT + }, +#endif + { + "license", "chrome://global/content/license.html", + nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT | + nsIAboutModule::MAKE_LINKABLE + }, + { + "logo", "chrome://branding/content/about.png", + nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT | + // Linkable for testing reasons. + nsIAboutModule::MAKE_LINKABLE + }, + { + "memory", "chrome://global/content/aboutMemory.xhtml", + nsIAboutModule::ALLOW_SCRIPT + }, + { + "mozilla", "chrome://global/content/mozilla.xhtml", + nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT + }, + { + "neterror", "chrome://global/content/netError.xhtml", + nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT | + nsIAboutModule::URI_CAN_LOAD_IN_CHILD | + nsIAboutModule::ALLOW_SCRIPT | + nsIAboutModule::HIDE_FROM_ABOUTABOUT + }, + { + "networking", "chrome://global/content/aboutNetworking.xhtml", + nsIAboutModule::ALLOW_SCRIPT + }, + { + "newaddon", "chrome://mozapps/content/extensions/newaddon.xul", + nsIAboutModule::ALLOW_SCRIPT | + nsIAboutModule::HIDE_FROM_ABOUTABOUT + }, + { + "performance", "chrome://global/content/aboutPerformance.xhtml", + nsIAboutModule::ALLOW_SCRIPT + }, + { + "plugins", "chrome://global/content/plugins.html", + nsIAboutModule::URI_MUST_LOAD_IN_CHILD + }, + { + "serviceworkers", "chrome://global/content/aboutServiceWorkers.xhtml", + nsIAboutModule::URI_CAN_LOAD_IN_CHILD | + nsIAboutModule::URI_MUST_LOAD_IN_CHILD | + nsIAboutModule::ALLOW_SCRIPT + }, +#ifndef ANDROID + { + "profiles", "chrome://global/content/aboutProfiles.xhtml", + nsIAboutModule::ALLOW_SCRIPT + }, +#endif + // about:srcdoc is unresolvable by specification. It is included here + // because the security manager would disallow srcdoc iframes otherwise. + { + "srcdoc", "about:blank", + nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT | + nsIAboutModule::HIDE_FROM_ABOUTABOUT | + // Needs to be linkable so content can touch its own srcdoc frames + nsIAboutModule::MAKE_LINKABLE | + nsIAboutModule::URI_CAN_LOAD_IN_CHILD + }, + { + "support", "chrome://global/content/aboutSupport.xhtml", + nsIAboutModule::ALLOW_SCRIPT + }, + { + "telemetry", "chrome://global/content/aboutTelemetry.xhtml", + nsIAboutModule::ALLOW_SCRIPT + }, + { + "webrtc", "chrome://global/content/aboutwebrtc/aboutWebrtc.html", + nsIAboutModule::ALLOW_SCRIPT + } +}; +static const int kRedirTotal = mozilla::ArrayLength(kRedirMap); + +NS_IMETHODIMP +nsAboutRedirector::NewChannel(nsIURI* aURI, + nsILoadInfo* aLoadInfo, + nsIChannel** aResult) +{ + NS_ENSURE_ARG_POINTER(aURI); + NS_ASSERTION(aResult, "must not be null"); + + nsAutoCString path; + nsresult rv = NS_GetAboutModuleName(aURI, path); + NS_ENSURE_SUCCESS(rv, rv); + + nsCOMPtr<nsIIOService> ioService = do_GetIOService(&rv); + NS_ENSURE_SUCCESS(rv, rv); + + for (int i = 0; i < kRedirTotal; i++) { + if (!strcmp(path.get(), kRedirMap[i].id)) { + nsCOMPtr<nsIChannel> tempChannel; + nsCOMPtr<nsIURI> tempURI; + rv = NS_NewURI(getter_AddRefs(tempURI), kRedirMap[i].url); + NS_ENSURE_SUCCESS(rv, rv); + + // If tempURI links to an external URI (i.e. something other than + // chrome:// or resource://) then set the LOAD_REPLACE flag on the + // channel which forces the channel owner 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); + + nsLoadFlags loadFlags = + isUIResource ? static_cast<nsLoadFlags>(nsIChannel::LOAD_NORMAL) + : static_cast<nsLoadFlags>(nsIChannel::LOAD_REPLACE); + + rv = NS_NewChannelInternal(getter_AddRefs(tempChannel), + tempURI, + aLoadInfo, + nullptr, // aLoadGroup + nullptr, // aCallbacks + loadFlags); + NS_ENSURE_SUCCESS(rv, rv); + + tempChannel->SetOriginalURI(aURI); + + tempChannel.forget(aResult); + return rv; + } + } + + NS_ERROR("nsAboutRedirector called for unknown case"); + return NS_ERROR_ILLEGAL_VALUE; +} + +NS_IMETHODIMP +nsAboutRedirector::GetURIFlags(nsIURI* aURI, uint32_t* aResult) +{ + NS_ENSURE_ARG_POINTER(aURI); + + nsAutoCString name; + nsresult rv = NS_GetAboutModuleName(aURI, name); + NS_ENSURE_SUCCESS(rv, rv); + + for (int i = 0; i < kRedirTotal; i++) { + if (name.EqualsASCII(kRedirMap[i].id)) { + *aResult = kRedirMap[i].flags; + return NS_OK; + } + } + + NS_ERROR("nsAboutRedirector called for unknown case"); + return NS_ERROR_ILLEGAL_VALUE; +} + +nsresult +nsAboutRedirector::Create(nsISupports* aOuter, REFNSIID aIID, void** aResult) +{ + RefPtr<nsAboutRedirector> about = new nsAboutRedirector(); + return about->QueryInterface(aIID, aResult); +} |