michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
michael@0: /* vim:set ts=4 sw=4 sts=4 et cindent: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "nsAboutRedirector.h"
michael@0: #include "nsNetUtil.h"
michael@0: #include "nsAboutProtocolUtils.h"
michael@0: #include "mozilla/ArrayUtils.h"
michael@0: 
michael@0: NS_IMPL_ISUPPORTS(nsAboutRedirector, nsIAboutModule)
michael@0: 
michael@0: struct RedirEntry {
michael@0:     const char* id;
michael@0:     const char* url;
michael@0:     uint32_t flags;
michael@0: };
michael@0: 
michael@0: /*
michael@0:   Entries which do not have URI_SAFE_FOR_UNTRUSTED_CONTENT will run with chrome
michael@0:   privileges. This is potentially dangerous. Please use
michael@0:   URI_SAFE_FOR_UNTRUSTED_CONTENT in the third argument to each map item below
michael@0:   unless your about: page really needs chrome privileges. Security review is
michael@0:   required before adding new map entries without
michael@0:   URI_SAFE_FOR_UNTRUSTED_CONTENT.  Also note, however, that adding
michael@0:   URI_SAFE_FOR_UNTRUSTED_CONTENT will allow random web sites to link to that
michael@0:   URI.  Perhaps we should separate the two concepts out...
michael@0:  */
michael@0: static RedirEntry kRedirMap[] = {
michael@0:     { "", "chrome://global/content/about.xhtml",
michael@0:       nsIAboutModule::ALLOW_SCRIPT },
michael@0:     { "about", "chrome://global/content/aboutAbout.xhtml", 0 },
michael@0:     { "credits", "http://www.mozilla.org/credits/",
michael@0:       nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT },
michael@0:     { "mozilla", "chrome://global/content/mozilla.xhtml",
michael@0:       nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT },
michael@0:     { "plugins", "chrome://global/content/plugins.html", 0 },
michael@0:     { "config", "chrome://global/content/config.xul", 0 },
michael@0: #ifdef MOZ_CRASHREPORTER
michael@0:     { "crashes", "chrome://global/content/crashes.xhtml", 0 },
michael@0: #endif
michael@0:     { "logo", "chrome://branding/content/about.png",
michael@0:       nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT},
michael@0:     { "buildconfig", "chrome://global/content/buildconfig.html",
michael@0:       nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT },
michael@0:     { "license", "chrome://global/content/license.html",
michael@0:       nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT },
michael@0:     { "neterror", "chrome://global/content/netError.xhtml",
michael@0:       nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
michael@0:       nsIAboutModule::ALLOW_SCRIPT |
michael@0:       nsIAboutModule::HIDE_FROM_ABOUTABOUT },
michael@0:     { "compartments", "chrome://global/content/aboutCompartments.xhtml",
michael@0:       nsIAboutModule::ALLOW_SCRIPT |
michael@0:       nsIAboutModule::HIDE_FROM_ABOUTABOUT },
michael@0:     { "memory", "chrome://global/content/aboutMemory.xhtml",
michael@0:       nsIAboutModule::ALLOW_SCRIPT },
michael@0:     { "addons", "chrome://mozapps/content/extensions/extensions.xul",
michael@0:       nsIAboutModule::ALLOW_SCRIPT },
michael@0:     { "newaddon", "chrome://mozapps/content/extensions/newaddon.xul",
michael@0:       nsIAboutModule::ALLOW_SCRIPT |
michael@0:       nsIAboutModule::HIDE_FROM_ABOUTABOUT },
michael@0:     { "support", "chrome://global/content/aboutSupport.xhtml",
michael@0:       nsIAboutModule::ALLOW_SCRIPT },
michael@0:     { "telemetry", "chrome://global/content/aboutTelemetry.xhtml",
michael@0:       nsIAboutModule::ALLOW_SCRIPT },
michael@0:     { "networking", "chrome://global/content/aboutNetworking.xhtml",
michael@0:        nsIAboutModule::ALLOW_SCRIPT },
michael@0:     { "webrtc", "chrome://global/content/aboutWebrtc.xhtml",
michael@0:        nsIAboutModule::ALLOW_SCRIPT },
michael@0:     // about:srcdoc is unresolvable by specification.  It is included here
michael@0:     // because the security manager would disallow srcdoc iframes otherwise.
michael@0:     { "srcdoc", "about:blank",
michael@0:       nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
michael@0:       nsIAboutModule::HIDE_FROM_ABOUTABOUT }
michael@0: };
michael@0: static const int kRedirTotal = mozilla::ArrayLength(kRedirMap);
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsAboutRedirector::NewChannel(nsIURI *aURI, nsIChannel **result)
michael@0: {
michael@0:     NS_ENSURE_ARG_POINTER(aURI);
michael@0:     NS_ASSERTION(result, "must not be null");
michael@0: 
michael@0:     nsresult rv;
michael@0: 
michael@0:     nsAutoCString path;
michael@0:     rv = NS_GetAboutModuleName(aURI, path);
michael@0:     if (NS_FAILED(rv))
michael@0:         return rv;
michael@0: 
michael@0:     nsCOMPtr<nsIIOService> ioService = do_GetIOService(&rv);
michael@0:     if (NS_FAILED(rv))
michael@0:         return rv;
michael@0: 
michael@0:     for (int i=0; i<kRedirTotal; i++) 
michael@0:     {
michael@0:         if (!strcmp(path.get(), kRedirMap[i].id))
michael@0:         {
michael@0:             nsCOMPtr<nsIChannel> tempChannel;
michael@0:             rv = ioService->NewChannel(nsDependentCString(kRedirMap[i].url),
michael@0:                                        nullptr, nullptr, getter_AddRefs(tempChannel));
michael@0:             if (NS_FAILED(rv))
michael@0:                 return rv;
michael@0: 
michael@0:             tempChannel->SetOriginalURI(aURI);
michael@0: 
michael@0:             NS_ADDREF(*result = tempChannel);
michael@0:             return rv;
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     NS_ERROR("nsAboutRedirector called for unknown case");
michael@0:     return NS_ERROR_ILLEGAL_VALUE;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsAboutRedirector::GetURIFlags(nsIURI *aURI, uint32_t *result)
michael@0: {
michael@0:     NS_ENSURE_ARG_POINTER(aURI);
michael@0: 
michael@0:     nsAutoCString name;
michael@0:     nsresult rv = NS_GetAboutModuleName(aURI, name);
michael@0:     NS_ENSURE_SUCCESS(rv, rv);
michael@0: 
michael@0:     for (int i=0; i < kRedirTotal; i++) 
michael@0:     {
michael@0:         if (name.EqualsASCII(kRedirMap[i].id))
michael@0:         {
michael@0:             *result = kRedirMap[i].flags;
michael@0:             return NS_OK;
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     NS_ERROR("nsAboutRedirector called for unknown case");
michael@0:     return NS_ERROR_ILLEGAL_VALUE;
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: nsAboutRedirector::Create(nsISupports *aOuter, REFNSIID aIID, void **aResult)
michael@0: {
michael@0:     nsAboutRedirector* about = new nsAboutRedirector();
michael@0:     if (about == nullptr)
michael@0:         return NS_ERROR_OUT_OF_MEMORY;
michael@0:     NS_ADDREF(about);
michael@0:     nsresult rv = about->QueryInterface(aIID, aResult);
michael@0:     NS_RELEASE(about);
michael@0:     return rv;
michael@0: }