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/* -*- 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 |
nsIAboutModule::MAKE_LINKABLE
},
{
"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);
}
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