Calixte Denizet
2bf9cc091a
Register about:pdf as a privileged-about page pointing at the landing page, and add the AboutPDF JSWindowActor pair that bridges the sandboxed content to chrome. The parent validates a dropped/picked file (file scheme, .pdf extension, existence and %PDF- header) before navigating the top browsing context to it, and, on Windows, exposes whether Firefox can be set as the default PDF handler and performs that change. Allow the page to call the RPM helpers it needs and to read/write the promo dismissal pref. Differential Revision: https://phabricator.services.mozilla.com/D303421
368 lines
14 KiB
C++
368 lines
14 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsAboutRedirector.h"
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#include "nsNetUtil.h"
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#include "nsAboutProtocolUtils.h"
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#include "nsBaseChannel.h"
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#include "nsIProtocolHandler.h"
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#include "nsXULAppAPI.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/dom/ContentParent.h"
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#include "mozilla/dom/RemoteType.h"
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#include "mozilla/gfx/GPUProcessManager.h"
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#ifdef MOZ_WIDGET_ANDROID
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# include "mozilla/java/GeckoAppShellWrappers.h"
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#endif
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#define ABOUT_CONFIG_ENABLED_PREF "general.aboutConfig.enable"
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NS_IMPL_ISUPPORTS(nsAboutRedirector, nsIAboutModule)
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struct RedirEntry {
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const char* id;
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const char* url;
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uint32_t flags;
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};
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class CrashChannel final : public nsBaseChannel {
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public:
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explicit CrashChannel(nsIURI* aURI) { SetURI(aURI); }
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nsresult OpenContentStream(bool async, nsIInputStream** stream,
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nsIChannel** channel) override {
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nsAutoCString spec;
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mURI->GetSpec(spec);
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if (spec.EqualsASCII("about:crashparent") && XRE_IsParentProcess()) {
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MOZ_CRASH("Crash via about:crashparent");
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}
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if (spec.EqualsASCII("about:crashgpu") && XRE_IsParentProcess()) {
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if (auto* gpu = mozilla::gfx::GPUProcessManager::Get()) {
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gpu->CrashProcess();
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}
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}
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if (spec.EqualsASCII("about:crashcontent") && XRE_IsContentProcess()) {
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MOZ_CRASH("Crash via about:crashcontent");
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}
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#ifdef MOZ_WIDGET_ANDROID
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if (spec.EqualsASCII("about:crashcontentjava") && XRE_IsContentProcess()) {
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mozilla::java::GeckoAppShell::CrashByUncaughtException();
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}
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#endif
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if (spec.EqualsASCII("about:crashextensions") && XRE_IsParentProcess()) {
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using ContentParent = mozilla::dom::ContentParent;
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nsTArray<RefPtr<ContentParent>> toKill;
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for (auto* cp : ContentParent::AllProcesses(ContentParent::eLive)) {
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if (cp->GetRemoteType() == EXTENSION_REMOTE_TYPE) {
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toKill.AppendElement(cp);
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}
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}
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for (auto& cp : toKill) {
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cp->KillHard("Killed via about:crashextensions");
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}
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}
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NS_WARNING("Unhandled about:crash* URI or wrong process");
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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protected:
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virtual ~CrashChannel() = default;
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};
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/*
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Entries which do not have URI_SAFE_FOR_UNTRUSTED_CONTENT will run with chrome
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privileges. This is potentially dangerous. Please use
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URI_SAFE_FOR_UNTRUSTED_CONTENT in the third argument to each map item below
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unless your about: page really needs chrome privileges. Security review is
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required before adding new map entries without
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URI_SAFE_FOR_UNTRUSTED_CONTENT.
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URI_SAFE_FOR_UNTRUSTED_CONTENT is not enough to let web pages load that page,
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for that you need MAKE_LINKABLE.
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NOTE: changes to this redir map need to be accompanied with changes to
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docshell/build/components.conf
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*/
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static const RedirEntry kRedirMap[] = {
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{"about", "chrome://global/content/aboutAbout.html", 0},
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#ifndef MOZ_WIDGET_ANDROID
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{"addons", "chrome://mozapps/content/extensions/aboutaddons.html",
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nsIAboutModule::ALLOW_SCRIPT | nsIAboutModule::IS_SECURE_CHROME_UI},
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#endif
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{"buildconfig", "chrome://global/content/buildconfig.html",
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nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
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nsIAboutModule::IS_SECURE_CHROME_UI},
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{"checkerboard", "chrome://global/content/aboutCheckerboard.html",
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nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
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nsIAboutModule::ALLOW_SCRIPT},
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#ifndef MOZ_WIDGET_ANDROID
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{"config", "chrome://global/content/aboutconfig/aboutconfig.html",
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nsIAboutModule::IS_SECURE_CHROME_UI},
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#else
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{"config", "chrome://geckoview/content/config.xhtml",
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nsIAboutModule::IS_SECURE_CHROME_UI |
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nsIAboutModule::HIDE_FROM_ABOUTABOUT},
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#endif
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#ifdef MOZ_CRASHREPORTER
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{"crashes", "chrome://global/content/crashes.html",
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nsIAboutModule::IS_SECURE_CHROME_UI},
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#endif
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{"credits", "https://www.mozilla.org/credits/",
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nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
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nsIAboutModule::URI_MUST_LOAD_IN_CHILD},
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{"fingerprintingprotection",
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"chrome://global/content/usercharacteristics/usercharacteristics.html",
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nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
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nsIAboutModule::HIDE_FROM_ABOUTABOUT | nsIAboutModule::ALLOW_SCRIPT |
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nsIAboutModule::URI_MUST_LOAD_IN_CHILD |
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nsIAboutModule::URI_CAN_LOAD_IN_PRIVILEGEDABOUT_PROCESS},
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#ifdef MOZ_WIDGET_ANDROID
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{"home", "about:blank",
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nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
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nsIAboutModule::URI_CAN_LOAD_IN_PRIVILEGEDABOUT_PROCESS |
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nsIAboutModule::URI_MUST_LOAD_IN_CHILD},
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#endif
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{"httpsonlyerror", "chrome://global/content/httpsonlyerror/errorpage.html",
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nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
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nsIAboutModule::URI_CAN_LOAD_IN_CHILD | nsIAboutModule::ALLOW_SCRIPT |
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nsIAboutModule::HIDE_FROM_ABOUTABOUT},
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#if defined(NIGHTLY_BUILD)
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{"inference", "chrome://global/content/aboutInference.html",
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nsIAboutModule::ALLOW_SCRIPT | nsIAboutModule::IS_SECURE_CHROME_UI},
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#endif
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{"license", "chrome://global/content/license.html",
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nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
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nsIAboutModule::IS_SECURE_CHROME_UI},
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{"logging", "chrome://global/content/aboutLogging/aboutLogging.html",
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nsIAboutModule::ALLOW_SCRIPT},
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{"logo", "chrome://branding/content/about.png",
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nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT},
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{"memory", "chrome://global/content/aboutMemory.xhtml",
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nsIAboutModule::ALLOW_SCRIPT},
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{"certificate", "chrome://global/content/certviewer/certviewer.html",
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nsIAboutModule::ALLOW_SCRIPT |
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nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
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nsIAboutModule::URI_MUST_LOAD_IN_CHILD |
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nsIAboutModule::URI_CAN_LOAD_IN_PRIVILEGEDABOUT_PROCESS |
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nsIAboutModule::IS_SECURE_CHROME_UI},
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{"mozilla", "chrome://global/content/mozilla.html",
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nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT},
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#if !defined(ANDROID) && !defined(XP_WIN)
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{"webauthn", "chrome://global/content/aboutWebauthn.html",
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nsIAboutModule::ALLOW_SCRIPT | nsIAboutModule::IS_SECURE_CHROME_UI},
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#endif
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{"neterror", "chrome://global/content/aboutNetError.html",
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nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
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nsIAboutModule::URI_CAN_LOAD_IN_CHILD | nsIAboutModule::ALLOW_SCRIPT |
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nsIAboutModule::HIDE_FROM_ABOUTABOUT},
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{"networking", "chrome://global/content/aboutNetworking.html",
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nsIAboutModule::ALLOW_SCRIPT},
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#ifndef MOZ_WIDGET_ANDROID
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{"pdf", "chrome://global/content/aboutPDF.html",
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nsIAboutModule::ALLOW_SCRIPT |
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nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
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nsIAboutModule::URI_MUST_LOAD_IN_CHILD |
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nsIAboutModule::URI_CAN_LOAD_IN_PRIVILEGEDABOUT_PROCESS |
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nsIAboutModule::IS_SECURE_CHROME_UI},
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#endif
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{"performance", "about:processes",
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nsIAboutModule::ALLOW_SCRIPT | nsIAboutModule::IS_SECURE_CHROME_UI |
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nsIAboutModule::HIDE_FROM_ABOUTABOUT},
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{"processes", "chrome://global/content/aboutProcesses.html",
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nsIAboutModule::ALLOW_SCRIPT | nsIAboutModule::IS_SECURE_CHROME_UI},
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{"restricted",
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"chrome://global/content/aboutRestricted/aboutRestricted.html",
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nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
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nsIAboutModule::URI_CAN_LOAD_IN_CHILD | nsIAboutModule::ALLOW_SCRIPT |
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nsIAboutModule::HIDE_FROM_ABOUTABOUT},
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// about:serviceworkers always wants to load in the parent process because
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// the only place nsIServiceWorkerManager has any data is in the parent
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// process.
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//
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// There is overlap without about:debugging, but about:debugging is not
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// available on mobile at this time, and it's useful to be able to know if
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// a ServiceWorker is registered directly from the mobile browser without
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// having to connect the device to a desktop machine and all that entails.
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{"serviceworkers", "chrome://global/content/aboutServiceWorkers.xhtml",
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nsIAboutModule::ALLOW_SCRIPT},
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#ifndef ANDROID
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{"profiles", "chrome://global/content/aboutProfiles.xhtml",
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nsIAboutModule::ALLOW_SCRIPT | nsIAboutModule::IS_SECURE_CHROME_UI},
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#endif
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// about:srcdoc is unresolvable by specification. It is included here
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// because the security manager would disallow srcdoc iframes otherwise.
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{"srcdoc", "about:blank",
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nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
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nsIAboutModule::HIDE_FROM_ABOUTABOUT |
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// Needs to be linkable so content can touch its own srcdoc frames
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nsIAboutModule::MAKE_LINKABLE | nsIAboutModule::URI_CAN_LOAD_IN_CHILD},
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{"support", "chrome://global/content/aboutSupport.xhtml",
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nsIAboutModule::ALLOW_SCRIPT | nsIAboutModule::IS_SECURE_CHROME_UI},
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#ifdef XP_WIN
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{"third-party", "chrome://global/content/aboutThirdParty.html",
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nsIAboutModule::ALLOW_SCRIPT},
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{"windows-messages", "chrome://global/content/aboutWindowsMessages.html",
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nsIAboutModule::ALLOW_SCRIPT},
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#endif
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#ifndef MOZ_GLEAN_ANDROID
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{"glean", "chrome://global/content/aboutGlean.html",
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# if !defined(NIGHTLY_BUILD) && defined(MOZILLA_OFFICIAL)
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nsIAboutModule::HIDE_FROM_ABOUTABOUT |
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# endif
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nsIAboutModule::ALLOW_SCRIPT},
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#endif
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{"telemetry", "chrome://global/content/aboutTelemetry.xhtml",
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nsIAboutModule::ALLOW_SCRIPT | nsIAboutModule::IS_SECURE_CHROME_UI},
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#ifndef MOZ_WIDGET_ANDROID
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{"translations",
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"chrome://global/content/translations/about-translations.html",
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nsIAboutModule::ALLOW_SCRIPT |
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nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
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nsIAboutModule::URI_MUST_LOAD_IN_CHILD |
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nsIAboutModule::URI_CAN_LOAD_IN_PRIVILEGEDABOUT_PROCESS},
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#endif
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{"url-classifier", "chrome://global/content/aboutUrlClassifier.xhtml",
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nsIAboutModule::ALLOW_SCRIPT},
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{"webrtc", "chrome://global/content/aboutwebrtc/aboutWebrtc.html",
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nsIAboutModule::ALLOW_SCRIPT},
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{"crashparent", "about:blank", nsIAboutModule::HIDE_FROM_ABOUTABOUT},
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{"crashcontent", "about:blank",
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nsIAboutModule::HIDE_FROM_ABOUTABOUT |
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nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
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nsIAboutModule::URI_CAN_LOAD_IN_CHILD |
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nsIAboutModule::URI_MUST_LOAD_IN_CHILD},
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#ifdef MOZ_WIDGET_ANDROID
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{"crashcontentjava", "about:blank",
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nsIAboutModule::HIDE_FROM_ABOUTABOUT |
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nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
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nsIAboutModule::URI_CAN_LOAD_IN_CHILD |
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nsIAboutModule::URI_MUST_LOAD_IN_CHILD},
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#endif
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{"crashgpu", "about:blank", nsIAboutModule::HIDE_FROM_ABOUTABOUT},
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{"crashextensions", "about:blank", nsIAboutModule::HIDE_FROM_ABOUTABOUT}};
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NS_IMETHODIMP
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nsAboutRedirector::NewChannel(nsIURI* aURI, nsILoadInfo* aLoadInfo,
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nsIChannel** aResult) {
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NS_ENSURE_ARG_POINTER(aURI);
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NS_ENSURE_ARG_POINTER(aLoadInfo);
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NS_ASSERTION(aResult, "must not be null");
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nsAutoCString path;
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nsresult rv = NS_GetAboutModuleName(aURI, path);
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NS_ENSURE_SUCCESS(rv, rv);
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nsCOMPtr<nsIIOService> ioService = do_GetIOService(&rv);
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NS_ENSURE_SUCCESS(rv, rv);
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if (path.EqualsASCII("crashparent") || path.EqualsASCII("crashcontent") ||
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path.EqualsASCII("crashgpu") || path.EqualsASCII("crashextensions")
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#ifdef MOZ_WIDGET_ANDROID
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|| path.EqualsASCII("crashcontentjava")
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#endif
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) {
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bool isExternal;
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aLoadInfo->GetLoadTriggeredFromExternal(&isExternal);
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if (isExternal || !aLoadInfo->TriggeringPrincipal() ||
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!aLoadInfo->TriggeringPrincipal()->IsSystemPrincipal()) {
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return NS_ERROR_NOT_AVAILABLE;
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}
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nsCOMPtr<nsIChannel> channel = new CrashChannel(aURI);
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channel->SetLoadInfo(aLoadInfo);
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channel.forget(aResult);
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return NS_OK;
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}
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if (path.EqualsASCII("config") &&
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!mozilla::Preferences::GetBool(ABOUT_CONFIG_ENABLED_PREF, true)) {
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return NS_ERROR_NOT_AVAILABLE;
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}
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for (const auto& redir : kRedirMap) {
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if (!strcmp(path.get(), redir.id)) {
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nsCOMPtr<nsIChannel> tempChannel;
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nsCOMPtr<nsIURI> tempURI;
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rv = NS_NewURI(getter_AddRefs(tempURI), redir.url);
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NS_ENSURE_SUCCESS(rv, rv);
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rv = NS_NewChannelInternal(getter_AddRefs(tempChannel), tempURI,
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aLoadInfo);
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NS_ENSURE_SUCCESS(rv, rv);
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// If tempURI links to an external URI (i.e. something other than
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// chrome:// or resource://) then set result principal URI on the
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// load info which forces the channel principal to reflect the displayed
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// URL rather then being the systemPrincipal.
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bool isUIResource = false;
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rv = NS_URIChainHasFlags(tempURI, nsIProtocolHandler::URI_IS_UI_RESOURCE,
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&isUIResource);
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NS_ENSURE_SUCCESS(rv, rv);
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bool isAboutBlank = NS_IsAboutBlank(tempURI);
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if (!isUIResource && !isAboutBlank) {
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aLoadInfo->SetResultPrincipalURI(tempURI);
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}
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tempChannel->SetOriginalURI(aURI);
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tempChannel.forget(aResult);
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return rv;
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}
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}
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NS_ERROR("nsAboutRedirector called for unknown case");
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return NS_ERROR_ILLEGAL_VALUE;
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}
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NS_IMETHODIMP
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nsAboutRedirector::GetURIFlags(nsIURI* aURI, uint32_t* aResult) {
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NS_ENSURE_ARG_POINTER(aURI);
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nsAutoCString name;
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nsresult rv = NS_GetAboutModuleName(aURI, name);
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NS_ENSURE_SUCCESS(rv, rv);
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for (const auto& redir : kRedirMap) {
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if (name.EqualsASCII(redir.id)) {
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*aResult = redir.flags;
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return NS_OK;
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}
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}
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NS_ERROR("nsAboutRedirector called for unknown case");
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return NS_ERROR_ILLEGAL_VALUE;
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}
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NS_IMETHODIMP
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nsAboutRedirector::GetChromeURI(nsIURI* aURI, nsIURI** chromeURI) {
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NS_ENSURE_ARG_POINTER(aURI);
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nsAutoCString name;
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nsresult rv = NS_GetAboutModuleName(aURI, name);
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NS_ENSURE_SUCCESS(rv, rv);
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for (const auto& redir : kRedirMap) {
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if (name.EqualsASCII(redir.id)) {
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return NS_NewURI(chromeURI, redir.url);
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}
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}
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NS_ERROR("nsAboutRedirector called for unknown case");
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return NS_ERROR_ILLEGAL_VALUE;
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}
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nsresult nsAboutRedirector::Create(REFNSIID aIID, void** aResult) {
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RefPtr about = mozilla::MakeRefPtr<nsAboutRedirector>();
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return about->QueryInterface(aIID, aResult);
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}
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