mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
348 lines
8.2 KiB
C++
348 lines
8.2 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set sw=2 sts=2 ts=2 et tw=80: */
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/* 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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/**
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* This is the principal that has no rights and can't be accessed by
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* anything other than itself and chrome; null principals are not
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* same-origin with anything but themselves.
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*/
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#include "mozilla/ArrayUtils.h"
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#include "nsNullPrincipal.h"
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#include "nsNullPrincipalURI.h"
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#include "nsMemory.h"
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#include "nsIUUIDGenerator.h"
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#include "nsID.h"
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#include "nsNetUtil.h"
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#include "nsIClassInfoImpl.h"
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#include "nsIObjectInputStream.h"
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#include "nsIObjectOutputStream.h"
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#include "nsNetCID.h"
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#include "nsError.h"
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#include "nsIScriptSecurityManager.h"
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#include "nsPrincipal.h"
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#include "nsScriptSecurityManager.h"
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#include "pratom.h"
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using namespace mozilla;
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NS_IMPL_CLASSINFO(nsNullPrincipal, nullptr, nsIClassInfo::MAIN_THREAD_ONLY,
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NS_NULLPRINCIPAL_CID)
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NS_IMPL_QUERY_INTERFACE_CI(nsNullPrincipal,
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nsIPrincipal,
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nsISerializable)
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NS_IMPL_CI_INTERFACE_GETTER(nsNullPrincipal,
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nsIPrincipal,
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nsISerializable)
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NS_IMETHODIMP_(MozExternalRefCountType)
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nsNullPrincipal::AddRef()
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{
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NS_PRECONDITION(int32_t(refcount) >= 0, "illegal refcnt");
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nsrefcnt count = ++refcount;
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NS_LOG_ADDREF(this, count, "nsNullPrincipal", sizeof(*this));
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return count;
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}
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NS_IMETHODIMP_(MozExternalRefCountType)
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nsNullPrincipal::Release()
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{
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NS_PRECONDITION(0 != refcount, "dup release");
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nsrefcnt count = --refcount;
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NS_LOG_RELEASE(this, count, "nsNullPrincipal");
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if (count == 0) {
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delete this;
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}
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return count;
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}
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nsNullPrincipal::nsNullPrincipal()
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{
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}
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nsNullPrincipal::~nsNullPrincipal()
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{
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}
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/* static */ already_AddRefed<nsNullPrincipal>
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nsNullPrincipal::CreateWithInheritedAttributes(nsIPrincipal* aInheritFrom)
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{
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nsRefPtr<nsNullPrincipal> nullPrin = new nsNullPrincipal();
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nsresult rv = nullPrin->Init(aInheritFrom->GetAppId(),
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aInheritFrom->GetIsInBrowserElement());
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return NS_SUCCEEDED(rv) ? nullPrin.forget() : nullptr;
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}
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#define NS_NULLPRINCIPAL_PREFIX NS_NULLPRINCIPAL_SCHEME ":"
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nsresult
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nsNullPrincipal::Init(uint32_t aAppId, bool aInMozBrowser)
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{
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MOZ_ASSERT(aAppId != nsIScriptSecurityManager::UNKNOWN_APP_ID);
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mAppId = aAppId;
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mInMozBrowser = aInMozBrowser;
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nsCString str;
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nsresult rv = GenerateNullPrincipalURI(str);
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NS_ENSURE_SUCCESS(rv, rv);
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mURI = new nsNullPrincipalURI(str);
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return NS_OK;
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}
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void
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nsNullPrincipal::GetScriptLocation(nsACString &aStr)
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{
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mURI->GetSpec(aStr);
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}
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nsresult
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nsNullPrincipal::GenerateNullPrincipalURI(nsACString &aStr)
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{
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// FIXME: bug 327161 -- make sure the uuid generator is reseeding-resistant.
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nsresult rv;
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nsCOMPtr<nsIUUIDGenerator> uuidgen =
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do_GetService("@mozilla.org/uuid-generator;1", &rv);
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NS_ENSURE_SUCCESS(rv, rv);
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nsID id;
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rv = uuidgen->GenerateUUIDInPlace(&id);
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NS_ENSURE_SUCCESS(rv, rv);
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char chars[NSID_LENGTH];
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id.ToProvidedString(chars);
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uint32_t suffixLen = NSID_LENGTH - 1;
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uint32_t prefixLen = ArrayLength(NS_NULLPRINCIPAL_PREFIX) - 1;
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// Use an nsCString so we only do the allocation once here and then share
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// with nsJSPrincipals
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aStr.SetCapacity(prefixLen + suffixLen);
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aStr.Append(NS_NULLPRINCIPAL_PREFIX);
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aStr.Append(chars);
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if (aStr.Length() != prefixLen + suffixLen) {
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NS_WARNING("Out of memory allocating null-principal URI");
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return NS_ERROR_OUT_OF_MEMORY;
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}
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return NS_OK;
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}
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#ifdef DEBUG
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void nsNullPrincipal::dumpImpl()
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{
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nsAutoCString str;
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mURI->GetSpec(str);
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fprintf(stderr, "nsNullPrincipal (%p) = %s\n", this, str.get());
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}
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#endif
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/**
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* nsIPrincipal implementation
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*/
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NS_IMETHODIMP
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nsNullPrincipal::Equals(nsIPrincipal *aOther, bool *aResult)
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{
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// Just equal to ourselves. Note that nsPrincipal::Equals will return false
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// for us since we have a unique domain/origin/etc.
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*aResult = (aOther == this);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsNullPrincipal::EqualsConsideringDomain(nsIPrincipal *aOther, bool *aResult)
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{
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return Equals(aOther, aResult);
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}
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NS_IMETHODIMP
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nsNullPrincipal::GetHashValue(uint32_t *aResult)
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{
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*aResult = (NS_PTR_TO_INT32(this) >> 2);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsNullPrincipal::GetURI(nsIURI** aURI)
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{
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return NS_EnsureSafeToReturn(mURI, aURI);
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}
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NS_IMETHODIMP
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nsNullPrincipal::GetCsp(nsIContentSecurityPolicy** aCsp)
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{
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NS_IF_ADDREF(*aCsp = mCSP);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsNullPrincipal::SetCsp(nsIContentSecurityPolicy* aCsp)
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{
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// If CSP was already set, it should not be destroyed! Instead, it should
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// get set anew when a new principal is created.
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if (mCSP)
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return NS_ERROR_ALREADY_INITIALIZED;
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mCSP = aCsp;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsNullPrincipal::GetDomain(nsIURI** aDomain)
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{
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return NS_EnsureSafeToReturn(mURI, aDomain);
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}
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NS_IMETHODIMP
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nsNullPrincipal::SetDomain(nsIURI* aDomain)
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{
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// I think the right thing to do here is to just throw... Silently failing
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// seems counterproductive.
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return NS_ERROR_NOT_AVAILABLE;
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}
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NS_IMETHODIMP
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nsNullPrincipal::GetOrigin(char** aOrigin)
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{
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*aOrigin = nullptr;
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nsAutoCString str;
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nsresult rv = mURI->GetSpec(str);
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NS_ENSURE_SUCCESS(rv, rv);
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*aOrigin = ToNewCString(str);
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NS_ENSURE_TRUE(*aOrigin, NS_ERROR_OUT_OF_MEMORY);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsNullPrincipal::Subsumes(nsIPrincipal *aOther, bool *aResult)
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{
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// We don't subsume anything except ourselves. Note that nsPrincipal::Equals
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// will return false for us, since we're not about:blank and not Equals to
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// reasonable nsPrincipals.
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*aResult = (aOther == this);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsNullPrincipal::SubsumesConsideringDomain(nsIPrincipal *aOther, bool *aResult)
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{
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return Subsumes(aOther, aResult);
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}
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NS_IMETHODIMP
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nsNullPrincipal::CheckMayLoad(nsIURI* aURI, bool aReport, bool aAllowIfInheritsPrincipal)
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{
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if (aAllowIfInheritsPrincipal) {
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if (nsPrincipal::IsPrincipalInherited(aURI)) {
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return NS_OK;
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}
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}
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// Also allow the load if we are the principal of the URI being checked.
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nsCOMPtr<nsIURIWithPrincipal> uriPrinc = do_QueryInterface(aURI);
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if (uriPrinc) {
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nsCOMPtr<nsIPrincipal> principal;
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uriPrinc->GetPrincipal(getter_AddRefs(principal));
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if (principal == this) {
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return NS_OK;
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}
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}
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if (aReport) {
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nsScriptSecurityManager::ReportError(
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nullptr, NS_LITERAL_STRING("CheckSameOriginError"), mURI, aURI);
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}
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return NS_ERROR_DOM_BAD_URI;
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}
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NS_IMETHODIMP
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nsNullPrincipal::GetJarPrefix(nsACString& aJarPrefix)
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{
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aJarPrefix.Truncate();
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return NS_OK;
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}
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NS_IMETHODIMP
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nsNullPrincipal::GetAppStatus(uint16_t* aAppStatus)
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{
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*aAppStatus = nsScriptSecurityManager::AppStatusForPrincipal(this);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsNullPrincipal::GetAppId(uint32_t* aAppId)
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{
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*aAppId = mAppId;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsNullPrincipal::GetIsInBrowserElement(bool* aIsInBrowserElement)
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{
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*aIsInBrowserElement = mInMozBrowser;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsNullPrincipal::GetUnknownAppId(bool* aUnknownAppId)
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{
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*aUnknownAppId = false;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsNullPrincipal::GetIsNullPrincipal(bool* aIsNullPrincipal)
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{
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*aIsNullPrincipal = true;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsNullPrincipal::GetBaseDomain(nsACString& aBaseDomain)
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{
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// For a null principal, we use our unique uuid as the base domain.
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return mURI->GetPath(aBaseDomain);
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}
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/**
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* nsISerializable implementation
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*/
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NS_IMETHODIMP
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nsNullPrincipal::Read(nsIObjectInputStream* aStream)
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{
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// Note - nsNullPrincipal use NS_GENERIC_FACTORY_CONSTRUCTOR_INIT, which means
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// that the Init() method has already been invoked by the time we deserialize.
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// This is in contrast to nsPrincipal, which uses NS_GENERIC_FACTORY_CONSTRUCTOR,
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// in which case ::Read needs to invoke Init().
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nsresult rv = aStream->Read32(&mAppId);
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NS_ENSURE_SUCCESS(rv, rv);
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rv = aStream->ReadBoolean(&mInMozBrowser);
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NS_ENSURE_SUCCESS(rv, rv);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsNullPrincipal::Write(nsIObjectOutputStream* aStream)
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{
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aStream->Write32(mAppId);
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aStream->WriteBoolean(mInMozBrowser);
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return NS_OK;
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}
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