Mirror of roytam1's Pale Moon fork just in case Moonchild and Tobin decide to go after him https://github.com/roytam1/palemoon27
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 sw=2 et 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 "mozilla/BasePrincipal.h"
#include "nsIAddonPolicyService.h"
#include "nsIContentSecurityPolicy.h"
#include "nsIObjectInputStream.h"
#include "nsIObjectOutputStream.h"
#include "nsPrincipal.h"
#include "nsNetUtil.h"
#include "nsIURIWithPrincipal.h"
#include "nsNullPrincipal.h"
#include "nsScriptSecurityManager.h"
#include "nsServiceManagerUtils.h"
#include "mozilla/dom/CSPDictionariesBinding.h"
#include "mozilla/dom/ToJSValue.h"
#include "mozilla/dom/URLSearchParams.h"
namespace mozilla {
using dom::URLParams;
void
OriginAttributes::CreateSuffix(nsACString& aStr) const
{
MOZ_RELEASE_ASSERT(mAppId != nsIScriptSecurityManager::UNKNOWN_APP_ID);
UniquePtr<URLParams> params(new URLParams());
nsAutoString value;
if (mAppId != nsIScriptSecurityManager::NO_APP_ID) {
value.AppendInt(mAppId);
params->Set(NS_LITERAL_STRING("appId"), value);
}
if (mInBrowser) {
params->Set(NS_LITERAL_STRING("inBrowser"), NS_LITERAL_STRING("1"));
}
if (!mAddonId.IsEmpty()) {
params->Set(NS_LITERAL_STRING("addonId"), mAddonId);
}
aStr.Truncate();
params->Serialize(value);
if (!value.IsEmpty()) {
aStr.AppendLiteral("!");
aStr.Append(NS_ConvertUTF16toUTF8(value));
}
}
namespace {
class MOZ_STACK_CLASS PopulateFromSuffixIterator final
: public URLParams::ForEachIterator
{
public:
explicit PopulateFromSuffixIterator(OriginAttributes* aOriginAttributes)
: mOriginAttributes(aOriginAttributes)
{
MOZ_ASSERT(aOriginAttributes);
}
bool URLParamsIterator(const nsString& aName,
const nsString& aValue) override
{
if (aName.EqualsLiteral("appId")) {
nsresult rv;
mOriginAttributes->mAppId = aValue.ToInteger(&rv);
if (NS_WARN_IF(NS_FAILED(rv))) {
return false;
}
if (mOriginAttributes->mAppId == nsIScriptSecurityManager::UNKNOWN_APP_ID) {
return false;
}
return true;
}
if (aName.EqualsLiteral("inBrowser")) {
if (!aValue.EqualsLiteral("1")) {
return false;
}
mOriginAttributes->mInBrowser = true;
return true;
}
if (aName.EqualsLiteral("addonId")) {
MOZ_RELEASE_ASSERT(mOriginAttributes->mAddonId.IsEmpty());
mOriginAttributes->mAddonId.Assign(aValue);
return true;
}
// No other attributes are supported.
return false;
}
private:
OriginAttributes* mOriginAttributes;
};
} // anonymous namespace
bool
OriginAttributes::PopulateFromSuffix(const nsACString& aStr)
{
if (aStr.IsEmpty()) {
return true;
}
if (aStr[0] != '!') {
return false;
}
UniquePtr<URLParams> params(new URLParams());
params->ParseInput(Substring(aStr, 1, aStr.Length() - 1));
PopulateFromSuffixIterator iterator(this);
return params->ForEach(iterator);
}
bool
OriginAttributes::PopulateFromOrigin(const nsACString& aOrigin,
nsACString& aOriginNoSuffix)
{
// RFindChar is only available on nsCString.
nsCString origin(aOrigin);
int32_t pos = origin.RFindChar('!');
if (pos == kNotFound) {
aOriginNoSuffix = origin;
return true;
}
aOriginNoSuffix = Substring(origin, 0, pos);
return PopulateFromSuffix(Substring(origin, pos));
}
BasePrincipal::BasePrincipal()
{}
BasePrincipal::~BasePrincipal()
{}
NS_IMETHODIMP
BasePrincipal::GetOrigin(nsACString& aOrigin)
{
return GetOriginInternal(aOrigin);
}
bool
BasePrincipal::Subsumes(nsIPrincipal* aOther, DocumentDomainConsideration aConsideration)
{
MOZ_ASSERT(aOther);
return SubsumesInternal(aOther, aConsideration);
}
NS_IMETHODIMP
BasePrincipal::Equals(nsIPrincipal *aOther, bool *aResult)
{
NS_ENSURE_TRUE(aOther, NS_ERROR_INVALID_ARG);
*aResult = Subsumes(aOther, DontConsiderDocumentDomain) &&
Cast(aOther)->Subsumes(this, DontConsiderDocumentDomain);
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::EqualsConsideringDomain(nsIPrincipal *aOther, bool *aResult)
{
NS_ENSURE_TRUE(aOther, NS_ERROR_INVALID_ARG);
*aResult = Subsumes(aOther, ConsiderDocumentDomain) &&
Cast(aOther)->Subsumes(this, ConsiderDocumentDomain);
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::Subsumes(nsIPrincipal *aOther, bool *aResult)
{
NS_ENSURE_TRUE(aOther, NS_ERROR_INVALID_ARG);
*aResult = Subsumes(aOther, DontConsiderDocumentDomain);
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::SubsumesConsideringDomain(nsIPrincipal *aOther, bool *aResult)
{
NS_ENSURE_TRUE(aOther, NS_ERROR_INVALID_ARG);
*aResult = Subsumes(aOther, ConsiderDocumentDomain);
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::GetCsp(nsIContentSecurityPolicy** aCsp)
{
NS_IF_ADDREF(*aCsp = mCSP);
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::SetCsp(nsIContentSecurityPolicy* aCsp)
{
// If CSP was already set, it should not be destroyed! Instead, it should
// get set anew when a new principal is created.
if (mCSP)
return NS_ERROR_ALREADY_INITIALIZED;
mCSP = aCsp;
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::GetCspJSON(nsAString& outCSPinJSON)
{
outCSPinJSON.Truncate();
dom::CSPPolicies jsonPolicies;
if (!mCSP) {
jsonPolicies.ToJSON(outCSPinJSON);
return NS_OK;
}
return mCSP->ToJSON(outCSPinJSON);
}
NS_IMETHODIMP
BasePrincipal::GetIsNullPrincipal(bool* aIsNullPrincipal)
{
*aIsNullPrincipal = false;
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::GetJarPrefix(nsACString& aJarPrefix)
{
MOZ_ASSERT(AppId() != nsIScriptSecurityManager::UNKNOWN_APP_ID);
mozilla::GetJarPrefix(mOriginAttributes.mAppId, mOriginAttributes.mInBrowser, aJarPrefix);
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::GetOriginAttributes(JSContext* aCx, JS::MutableHandle<JS::Value> aVal)
{
if (NS_WARN_IF(!ToJSValue(aCx, mOriginAttributes, aVal))) {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::GetOriginSuffix(nsACString& aOriginAttributes)
{
mOriginAttributes.CreateSuffix(aOriginAttributes);
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::GetAppStatus(uint16_t* aAppStatus)
{
if (AppId() == nsIScriptSecurityManager::UNKNOWN_APP_ID) {
NS_WARNING("Asking for app status on a principal with an unknown app id");
*aAppStatus = nsIPrincipal::APP_STATUS_NOT_INSTALLED;
return NS_OK;
}
*aAppStatus = nsScriptSecurityManager::AppStatusForPrincipal(this);
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::GetAppId(uint32_t* aAppId)
{
if (AppId() == nsIScriptSecurityManager::UNKNOWN_APP_ID) {
MOZ_ASSERT(false);
*aAppId = nsIScriptSecurityManager::NO_APP_ID;
return NS_OK;
}
*aAppId = AppId();
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::GetIsInBrowserElement(bool* aIsInBrowserElement)
{
*aIsInBrowserElement = IsInBrowserElement();
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::GetUnknownAppId(bool* aUnknownAppId)
{
*aUnknownAppId = AppId() == nsIScriptSecurityManager::UNKNOWN_APP_ID;
return NS_OK;
}
already_AddRefed<BasePrincipal>
BasePrincipal::CreateCodebasePrincipal(nsIURI* aURI, OriginAttributes& aAttrs)
{
// If the URI is supposed to inherit the security context of whoever loads it,
// we shouldn't make a codebase principal for it.
bool inheritsPrincipal;
nsresult rv = NS_URIChainHasFlags(aURI, nsIProtocolHandler::URI_INHERITS_SECURITY_CONTEXT,
&inheritsPrincipal);
nsCOMPtr<nsIPrincipal> principal;
if (NS_FAILED(rv) || inheritsPrincipal) {
return nsNullPrincipal::Create();
}
// Check whether the URI knows what its principal is supposed to be.
nsCOMPtr<nsIURIWithPrincipal> uriPrinc = do_QueryInterface(aURI);
if (uriPrinc) {
nsCOMPtr<nsIPrincipal> principal;
uriPrinc->GetPrincipal(getter_AddRefs(principal));
if (!principal) {
return nsNullPrincipal::Create();
}
nsRefPtr<BasePrincipal> concrete = Cast(principal);
return concrete.forget();
}
// Mint a codebase principal.
nsRefPtr<nsPrincipal> codebase = new nsPrincipal();
rv = codebase->Init(aURI, aAttrs);
NS_ENSURE_SUCCESS(rv, nullptr);
return codebase.forget();
}
bool
BasePrincipal::AddonAllowsLoad(nsIURI* aURI)
{
if (mOriginAttributes.mAddonId.IsEmpty()) {
return false;
}
nsCOMPtr<nsIAddonPolicyService> aps = do_GetService("@mozilla.org/addons/policy-service;1");
NS_ENSURE_TRUE(aps, false);
bool allowed = false;
nsresult rv = aps->AddonMayLoadURI(mOriginAttributes.mAddonId, aURI, &allowed);
return NS_SUCCEEDED(rv) && allowed;
}
} // namespace mozilla