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gecko-dev/caps/BasePrincipal.cpp

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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 "nsDocShell.h"
#include "ExpandedPrincipal.h"
#include "nsNetUtil.h"
#include "nsContentUtils.h"
#include "nsIURIWithSpecialOrigin.h"
#include "nsScriptSecurityManager.h"
#include "nsServiceManagerUtils.h"
#include "nsAboutProtocolUtils.h"
#include "ThirdPartyUtil.h"
#include "mozilla/ContentPrincipal.h"
#include "mozilla/NullPrincipal.h"
#include "mozilla/dom/BlobURLProtocolHandler.h"
#include "mozilla/dom/ChromeUtils.h"
#include "mozilla/dom/ToJSValue.h"
#include "mozilla/dom/nsMixedContentBlocker.h"
#include "mozilla/Components.h"
#include "nsIURIFixup.h"
#include "json/json.h"
#include "nsSerializationHelper.h"
namespace mozilla {
BasePrincipal::BasePrincipal(PrincipalKind aKind)
: mKind(aKind), mHasExplicitDomain(false), mInitialized(false) {}
BasePrincipal::~BasePrincipal() {}
NS_IMETHODIMP
BasePrincipal::GetOrigin(nsACString& aOrigin) {
MOZ_ASSERT(mInitialized);
nsresult rv = GetOriginNoSuffix(aOrigin);
NS_ENSURE_SUCCESS(rv, rv);
nsAutoCString suffix;
rv = GetOriginSuffix(suffix);
NS_ENSURE_SUCCESS(rv, rv);
aOrigin.Append(suffix);
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::GetAsciiOrigin(nsACString& aOrigin) {
aOrigin.Truncate();
nsCOMPtr<nsIURI> prinURI;
nsresult rv = GetURI(getter_AddRefs(prinURI));
if (NS_FAILED(rv) || !prinURI) {
return NS_ERROR_NOT_AVAILABLE;
}
return nsContentUtils::GetASCIIOrigin(prinURI, aOrigin);
}
NS_IMETHODIMP
BasePrincipal::GetOriginNoSuffix(nsACString& aOrigin) {
MOZ_ASSERT(mInitialized);
mOriginNoSuffix->ToUTF8String(aOrigin);
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::GetSiteOrigin(nsACString& aSiteOrigin) {
MOZ_ASSERT(mInitialized);
return GetOrigin(aSiteOrigin);
}
// Returns the inner Json::value of the serialized principal
// Example input and return values:
// Null principal:
// {"0":{"0":"moz-nullprincipal:{56cac540-864d-47e7-8e25-1614eab5155e}"}} ->
// {"0":"moz-nullprincipal:{56cac540-864d-47e7-8e25-1614eab5155e}"}
//
// Content principal:
// {"1":{"0":"https://mozilla.com"}} -> {"0":"https://mozilla.com"}
//
// Expanded principal:
// {"2":{"0":"<base64principal1>,<base64principal2>"}} ->
// {"0":"<base64principal1>,<base64principal2>"}
//
// System principal:
// {"3":{}} -> {}
// The aKey passed in also returns the corresponding PrincipalKind enum
//
// Warning: The Json::Value* pointer is into the aRoot object
static const Json::Value* GetPrincipalObject(const Json::Value& aRoot,
int& aOutPrincipalKind) {
const Json::Value::Members members = aRoot.getMemberNames();
// We only support one top level key in the object
if (members.size() != 1) {
return nullptr;
}
// members[0] here is the "0", "1", "2", "3" principalKind
// that is the top level of the serialized JSON principal
const std::string stringPrincipalKind = members[0];
// Next we take the string value from the JSON
// and convert it into the int for the BasePrincipal::PrincipalKind enum
// Verify that the key is within the valid range
int principalKind = std::stoi(stringPrincipalKind);
MOZ_ASSERT(BasePrincipal::eNullPrincipal == 0,
"We need to rely on 0 being a bounds check for the first "
"principal kind.");
if (principalKind < 0 || principalKind > BasePrincipal::eKindMax) {
return nullptr;
}
MOZ_ASSERT(principalKind == BasePrincipal::eNullPrincipal ||
principalKind == BasePrincipal::eContentPrincipal ||
principalKind == BasePrincipal::eExpandedPrincipal ||
principalKind == BasePrincipal::eSystemPrincipal);
aOutPrincipalKind = principalKind;
if (!aRoot[stringPrincipalKind].isObject()) {
return nullptr;
}
// Return the inner value of the principal object
return &aRoot[stringPrincipalKind];
}
// Accepts the JSON inner object without the wrapping principalKind
// (See GetPrincipalObject for the inner object response examples)
// Creates an array of KeyVal objects that are all defined on the principal
// Each principal type (null, content, expanded) has a KeyVal that stores the
// fields of the JSON
//
// This simplifies deserializing elsewhere as we do the checking for presence
// and string values here for the complete set of serializable keys that the
// corresponding principal supports.
//
// The KeyVal object has the following fields:
// - valueWasSerialized: is true if the deserialized JSON contained a string
// value
// - value: The string that was serialized for this key
// - key: an SerializableKeys enum value specific to the principal.
// For example content principal is an enum of: eURI, eDomain,
// eSuffix, eCSP
//
//
// Given an inner content principal:
// {"0": "https://mozilla.com", "2": "^privateBrowsingId=1"}
// | | | |
// ----------------------------- |
// | | |
// Key ----------------------
// |
// Value
//
// They Key "0" corresponds to ContentPrincipal::eURI
// They Key "1" corresponds to ContentPrincipal::eSuffix
template <typename T>
static nsTArray<typename T::KeyVal> GetJSONKeys(const Json::Value* aInput) {
int size = T::eMax + 1;
nsTArray<typename T::KeyVal> fields;
for (int i = 0; i != size; i++) {
typename T::KeyVal* field = fields.AppendElement();
// field->valueWasSerialized returns if the field was found in the
// deserialized code. This simplifies the consumers from having to check
// length.
field->valueWasSerialized = false;
field->key = static_cast<typename T::SerializableKeys>(i);
const std::string key = std::to_string(field->key);
if (aInput->isMember(key)) {
const Json::Value& val = (*aInput)[key];
if (val.isString()) {
field->value.Append(nsDependentCString(val.asCString()));
field->valueWasSerialized = true;
}
}
}
return fields;
}
// Takes a JSON string and parses it turning it into a principal of the
// corresponding type
//
// Given a content principal:
//
// inner JSON object
// |
// ---------------------------------------------------------
// | |
// {"1": {"0": "https://mozilla.com", "2": "^privateBrowsingId=1"}}
// | | | | |
// | ----------------------------- |
// | | | |
// PrincipalKind | | |
// | ----------------------------
// SerializableKeys |
// Value
//
// The string is first deserialized with jsoncpp to get the Json::Value of the
// object. The inner JSON object is parsed with GetPrincipalObject which returns
// a KeyVal array of the inner object's fields. PrincipalKind is returned by
// GetPrincipalObject which is then used to decide which principal
// implementation of FromProperties to call. The corresponding FromProperties
// call takes the KeyVal fields and turns it into a principal.
already_AddRefed<BasePrincipal> BasePrincipal::FromJSON(
const nsACString& aJSON) {
Json::Value root;
Json::CharReaderBuilder builder;
std::unique_ptr<Json::CharReader> const reader(builder.newCharReader());
bool parseSuccess =
reader->parse(aJSON.BeginReading(), aJSON.EndReading(), &root, nullptr);
if (!parseSuccess) {
MOZ_ASSERT(false,
"Unable to parse string as JSON to deserialize as a principal");
return nullptr;
}
int principalKind = -1;
const Json::Value* value = GetPrincipalObject(root, principalKind);
if (!value) {
#ifdef DEBUG
fprintf(stderr, "Unexpected JSON principal %s\n",
root.toStyledString().c_str());
#endif
MOZ_ASSERT(false, "Unexpected JSON to deserialize as a principal");
return nullptr;
}
MOZ_ASSERT(principalKind != -1,
"PrincipalKind should always be >=0 by this point");
if (principalKind == eSystemPrincipal) {
RefPtr<BasePrincipal> principal =
BasePrincipal::Cast(nsContentUtils::GetSystemPrincipal());
return principal.forget();
}
if (principalKind == eNullPrincipal) {
nsTArray<NullPrincipal::KeyVal> res = GetJSONKeys<NullPrincipal>(value);
return NullPrincipal::FromProperties(res);
}
if (principalKind == eContentPrincipal) {
nsTArray<ContentPrincipal::KeyVal> res =
GetJSONKeys<ContentPrincipal>(value);
return ContentPrincipal::FromProperties(res);
}
if (principalKind == eExpandedPrincipal) {
nsTArray<ExpandedPrincipal::KeyVal> res =
GetJSONKeys<ExpandedPrincipal>(value);
return ExpandedPrincipal::FromProperties(res);
}
MOZ_RELEASE_ASSERT(false, "Unexpected enum to deserialize as a principal");
}
nsresult BasePrincipal::PopulateJSONObject(Json::Value& aObject) {
return NS_OK;
}
// Returns a JSON representation of the principal.
// Calling BasePrincipal::FromJSON will deserialize the JSON into
// the corresponding principal type.
nsresult BasePrincipal::ToJSON(nsACString& aResult) {
MOZ_ASSERT(aResult.IsEmpty(), "ToJSON only supports an empty result input");
aResult.Truncate();
Json::StreamWriterBuilder builder;
builder["indentation"] = "";
Json::Value innerJSONObject = Json::objectValue;
nsresult rv = PopulateJSONObject(innerJSONObject);
NS_ENSURE_SUCCESS(rv, rv);
Json::Value root = Json::objectValue;
std::string key = std::to_string(Kind());
root[key] = innerJSONObject;
std::string result = Json::writeString(builder, root);
aResult.Append(result);
if (aResult.Length() == 0) {
MOZ_ASSERT(false, "JSON writer failed to output a principal serialization");
return NS_ERROR_UNEXPECTED;
}
return NS_OK;
}
bool BasePrincipal::Subsumes(nsIPrincipal* aOther,
DocumentDomainConsideration aConsideration) {
MOZ_ASSERT(aOther);
MOZ_ASSERT_IF(Kind() == eContentPrincipal, mOriginSuffix);
// Expanded principals handle origin attributes for each of their
// sub-principals individually, null principals do only simple checks for
// pointer equality, and system principals are immune to origin attributes
// checks, so only do this check for content principals.
if (Kind() == eContentPrincipal &&
mOriginSuffix != Cast(aOther)->mOriginSuffix) {
return false;
}
return SubsumesInternal(aOther, aConsideration);
}
NS_IMETHODIMP
BasePrincipal::Equals(nsIPrincipal* aOther, bool* aResult) {
NS_ENSURE_ARG_POINTER(aOther);
*aResult = FastEquals(aOther);
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::EqualsConsideringDomain(nsIPrincipal* aOther, bool* aResult) {
NS_ENSURE_ARG_POINTER(aOther);
*aResult = FastEqualsConsideringDomain(aOther);
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::EqualsURI(nsIURI* aOtherURI, bool* aResult) {
*aResult = false;
nsCOMPtr<nsIURI> prinURI;
nsresult rv = GetURI(getter_AddRefs(prinURI));
if (NS_FAILED(rv) || !prinURI) {
return NS_OK;
}
return prinURI->EqualsExceptRef(aOtherURI, aResult);
}
NS_IMETHODIMP
BasePrincipal::Subsumes(nsIPrincipal* aOther, bool* aResult) {
NS_ENSURE_ARG_POINTER(aOther);
*aResult = FastSubsumes(aOther);
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::SubsumesConsideringDomain(nsIPrincipal* aOther, bool* aResult) {
NS_ENSURE_ARG_POINTER(aOther);
*aResult = FastSubsumesConsideringDomain(aOther);
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::SubsumesConsideringDomainIgnoringFPD(nsIPrincipal* aOther,
bool* aResult) {
NS_ENSURE_ARG_POINTER(aOther);
*aResult = FastSubsumesConsideringDomainIgnoringFPD(aOther);
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::CheckMayLoad(nsIURI* aURI, bool aAllowIfInheritsPrincipal) {
return CheckMayLoadHelper(aURI, aAllowIfInheritsPrincipal, false, 0);
}
NS_IMETHODIMP
BasePrincipal::CheckMayLoadWithReporting(nsIURI* aURI,
bool aAllowIfInheritsPrincipal,
uint64_t aInnerWindowID) {
return CheckMayLoadHelper(aURI, aAllowIfInheritsPrincipal, true,
aInnerWindowID);
}
nsresult BasePrincipal::CheckMayLoadHelper(nsIURI* aURI,
bool aAllowIfInheritsPrincipal,
bool aReport,
uint64_t aInnerWindowID) {
NS_ENSURE_ARG_POINTER(aURI);
MOZ_ASSERT(
aReport || aInnerWindowID == 0,
"Why do we have an inner window id if we're not supposed to report?");
// Check the internal method first, which allows us to quickly approve loads
// for the System Principal.
if (MayLoadInternal(aURI)) {
return NS_OK;
}
nsresult rv;
if (aAllowIfInheritsPrincipal) {
// If the caller specified to allow loads of URIs that inherit
// our principal, allow the load if this URI inherits its principal.
bool doesInheritSecurityContext;
rv = NS_URIChainHasFlags(aURI,
nsIProtocolHandler::URI_INHERITS_SECURITY_CONTEXT,
&doesInheritSecurityContext);
if (NS_SUCCEEDED(rv) && doesInheritSecurityContext) {
return NS_OK;
}
}
bool fetchableByAnyone;
rv = NS_URIChainHasFlags(aURI, nsIProtocolHandler::URI_FETCHABLE_BY_ANYONE,
&fetchableByAnyone);
if (NS_SUCCEEDED(rv) && fetchableByAnyone) {
return NS_OK;
}
if (aReport) {
nsCOMPtr<nsIURI> prinURI;
rv = GetURI(getter_AddRefs(prinURI));
if (NS_SUCCEEDED(rv) && prinURI) {
nsScriptSecurityManager::ReportError(
"CheckSameOriginError", prinURI, aURI,
mOriginAttributes.mPrivateBrowsingId > 0, aInnerWindowID);
}
}
return NS_ERROR_DOM_BAD_URI;
}
NS_IMETHODIMP
BasePrincipal::IsThirdPartyURI(nsIURI* aURI, bool* aRes) {
*aRes = true;
// If we do not have a URI its always 3rd party.
nsCOMPtr<nsIURI> prinURI;
nsresult rv = GetURI(getter_AddRefs(prinURI));
if (NS_FAILED(rv) || !prinURI) {
return NS_OK;
}
ThirdPartyUtil* thirdPartyUtil = ThirdPartyUtil::GetInstance();
return thirdPartyUtil->IsThirdPartyURI(prinURI, aURI, aRes);
}
NS_IMETHODIMP
BasePrincipal::IsThirdPartyPrincipal(nsIPrincipal* aPrin, bool* aRes) {
*aRes = true;
nsCOMPtr<nsIURI> prinURI;
nsresult rv = GetURI(getter_AddRefs(prinURI));
if (NS_FAILED(rv) || !prinURI) {
return NS_OK;
}
return aPrin->IsThirdPartyURI(prinURI, aRes);
}
NS_IMETHODIMP
BasePrincipal::IsSameOrigin(nsIURI* aURI, bool aIsPrivateWin, bool* aRes) {
*aRes = false;
nsCOMPtr<nsIURI> prinURI;
nsresult rv = GetURI(getter_AddRefs(prinURI));
if (NS_FAILED(rv) || !prinURI) {
return NS_OK;
}
nsIScriptSecurityManager* ssm = nsContentUtils::GetSecurityManager();
if (!ssm) {
return NS_ERROR_UNEXPECTED;
;
}
*aRes = NS_SUCCEEDED(
ssm->CheckSameOriginURI(prinURI, aURI, false, aIsPrivateWin));
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::GetIsNullPrincipal(bool* aResult) {
*aResult = Kind() == eNullPrincipal;
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::GetIsContentPrincipal(bool* aResult) {
*aResult = Kind() == eContentPrincipal;
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::GetIsExpandedPrincipal(bool* aResult) {
*aResult = Kind() == eExpandedPrincipal;
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::GetAsciiSpec(nsACString& aSpec) {
aSpec.Truncate();
nsCOMPtr<nsIURI> prinURI;
nsresult rv = GetURI(getter_AddRefs(prinURI));
if (NS_FAILED(rv) || !prinURI) {
return NS_OK;
}
return prinURI->GetAsciiSpec(aSpec);
}
NS_IMETHODIMP
BasePrincipal::GetExposablePrePath(nsACString& aPrepath) {
aPrepath.Truncate();
nsCOMPtr<nsIURI> prinURI;
nsresult rv = GetURI(getter_AddRefs(prinURI));
if (NS_FAILED(rv) || !prinURI) {
return NS_OK;
}
nsCOMPtr<nsIURIFixup> fixup(components::URIFixup::Service());
nsCOMPtr<nsIURIFixup> urifixup = services::GetURIFixup();
if (NS_WARN_IF(!urifixup)) {
return NS_OK;
}
nsCOMPtr<nsIURI> fixedURI;
rv = fixup->CreateExposableURI(prinURI, getter_AddRefs(fixedURI));
if (NS_FAILED(rv) || NS_WARN_IF(!fixedURI)) {
return NS_OK;
}
return fixedURI->GetDisplayPrePath(aPrepath);
}
NS_IMETHODIMP
BasePrincipal::GetIsSystemPrincipal(bool* aResult) {
*aResult = IsSystemPrincipal();
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::GetIsAddonOrExpandedAddonPrincipal(bool* aResult) {
*aResult = AddonPolicy() || ContentScriptAddonPolicy();
return NS_OK;
}
NS_IMETHODIMP BasePrincipal::GetIsOnion(bool* aIsOnion) {
*aIsOnion = false;
nsCOMPtr<nsIURI> prinURI;
nsresult rv = GetURI(getter_AddRefs(prinURI));
if (NS_FAILED(rv) || !prinURI) {
return NS_OK;
}
nsAutoCString host;
rv = prinURI->GetHost(host);
if (NS_FAILED(rv)) {
return NS_OK;
}
*aIsOnion = StringEndsWith(host, NS_LITERAL_CSTRING(".onion"));
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::SchemeIs(const char* aScheme, bool* aResult) {
*aResult = false;
nsCOMPtr<nsIURI> prinURI;
nsresult rv = GetURI(getter_AddRefs(prinURI));
if (NS_FAILED(rv) || !prinURI) {
return NS_OK;
}
*aResult = prinURI->SchemeIs(aScheme);
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::IsURIInPrefList(const char* aPref, bool* aResult) {
*aResult = false;
nsCOMPtr<nsIURI> prinURI;
nsresult rv = GetURI(getter_AddRefs(prinURI));
if (NS_FAILED(rv) || !prinURI) {
return NS_OK;
}
*aResult = nsContentUtils::IsURIInPrefList(prinURI, aPref);
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::GetIsOriginPotentiallyTrustworthy(bool* aResult) {
MOZ_ASSERT(NS_IsMainThread());
*aResult = false;
nsCOMPtr<nsIURI> uri;
nsresult rv = GetURI(getter_AddRefs(uri));
if (NS_FAILED(rv) || !uri) {
return NS_OK;
}
*aResult = nsMixedContentBlocker::IsPotentiallyTrustworthyOrigin(uri);
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::GetAboutModuleFlags(uint32_t* flags) {
*flags = 0;
nsCOMPtr<nsIURI> prinURI;
nsresult rv = GetURI(getter_AddRefs(prinURI));
if (NS_FAILED(rv) || !prinURI) {
return NS_ERROR_NOT_AVAILABLE;
}
if (!prinURI->SchemeIs("about")) {
return NS_OK;
}
nsCOMPtr<nsIAboutModule> aboutModule;
rv = NS_GetAboutModule(prinURI, getter_AddRefs(aboutModule));
if (NS_FAILED(rv) || !aboutModule) {
return rv;
}
return aboutModule->GetURIFlags(prinURI, flags);
}
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) {
MOZ_ASSERT(mOriginSuffix);
mOriginSuffix->ToUTF8String(aOriginAttributes);
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::GetUserContextId(uint32_t* aUserContextId) {
*aUserContextId = UserContextId();
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::GetPrivateBrowsingId(uint32_t* aPrivateBrowsingId) {
*aPrivateBrowsingId = PrivateBrowsingId();
return NS_OK;
}
NS_IMETHODIMP
BasePrincipal::GetIsInIsolatedMozBrowserElement(
bool* aIsInIsolatedMozBrowserElement) {
*aIsInIsolatedMozBrowserElement = IsInIsolatedMozBrowserElement();
return NS_OK;
}
nsresult BasePrincipal::GetAddonPolicy(nsISupports** aResult) {
RefPtr<extensions::WebExtensionPolicy> policy(AddonPolicy());
policy.forget(aResult);
return NS_OK;
}
extensions::WebExtensionPolicy* BasePrincipal::AddonPolicy() {
if (Is<ContentPrincipal>()) {
return As<ContentPrincipal>()->AddonPolicy();
}
return nullptr;
}
bool BasePrincipal::AddonHasPermission(const nsAtom* aPerm) {
if (auto policy = AddonPolicy()) {
return policy->HasPermission(aPerm);
}
return false;
}
nsIPrincipal* BasePrincipal::PrincipalToInherit(nsIURI* aRequestedURI) {
if (Is<ExpandedPrincipal>()) {
return As<ExpandedPrincipal>()->PrincipalToInherit(aRequestedURI);
}
return this;
}
already_AddRefed<BasePrincipal> BasePrincipal::CreateContentPrincipal(
nsIURI* aURI, const OriginAttributes& aAttrs) {
MOZ_ASSERT(aURI);
nsAutoCString originNoSuffix;
nsresult rv =
ContentPrincipal::GenerateOriginNoSuffixFromURI(aURI, originNoSuffix);
if (NS_FAILED(rv)) {
// If the generation of the origin fails, we still want to have a valid
// principal. Better to return a null principal here.
return NullPrincipal::Create(aAttrs);
}
return CreateContentPrincipal(aURI, aAttrs, originNoSuffix);
}
already_AddRefed<BasePrincipal> BasePrincipal::CreateContentPrincipal(
nsIURI* aURI, const OriginAttributes& aAttrs,
const nsACString& aOriginNoSuffix) {
MOZ_ASSERT(aURI);
MOZ_ASSERT(!aOriginNoSuffix.IsEmpty());
// If the URI is supposed to inherit the security context of whoever loads it,
// we shouldn't make a content principal for it.
bool inheritsPrincipal;
nsresult rv = NS_URIChainHasFlags(
aURI, nsIProtocolHandler::URI_INHERITS_SECURITY_CONTEXT,
&inheritsPrincipal);
if (NS_FAILED(rv) || inheritsPrincipal) {
return NullPrincipal::Create(aAttrs);
}
// Check whether the URI knows what its principal is supposed to be.
#if defined(MOZ_THUNDERBIRD) || defined(MOZ_SUITE)
nsCOMPtr<nsIURIWithSpecialOrigin> uriWithSpecialOrigin =
do_QueryInterface(aURI);
if (uriWithSpecialOrigin) {
nsCOMPtr<nsIURI> origin;
rv = uriWithSpecialOrigin->GetOrigin(getter_AddRefs(origin));
if (NS_WARN_IF(NS_FAILED(rv))) {
return nullptr;
}
MOZ_ASSERT(origin);
OriginAttributes attrs;
RefPtr<BasePrincipal> principal = CreateContentPrincipal(origin, attrs);
return principal.forget();
}
#endif
nsCOMPtr<nsIPrincipal> blobPrincipal;
if (dom::BlobURLProtocolHandler::GetBlobURLPrincipal(
aURI, getter_AddRefs(blobPrincipal))) {
MOZ_ASSERT(blobPrincipal);
RefPtr<BasePrincipal> principal = Cast(blobPrincipal);
return principal.forget();
}
// Mint a content principal.
RefPtr<ContentPrincipal> principal = new ContentPrincipal();
rv = principal->Init(aURI, aAttrs, aOriginNoSuffix);
NS_ENSURE_SUCCESS(rv, nullptr);
return principal.forget();
}
already_AddRefed<BasePrincipal> BasePrincipal::CreateContentPrincipal(
const nsACString& aOrigin) {
MOZ_ASSERT(!StringBeginsWith(aOrigin, NS_LITERAL_CSTRING("[")),
"CreateContentPrincipal does not support System and Expanded "
"principals");
MOZ_ASSERT(!StringBeginsWith(aOrigin,
NS_LITERAL_CSTRING(NS_NULLPRINCIPAL_SCHEME ":")),
"CreateContentPrincipal does not support NullPrincipal");
nsAutoCString originNoSuffix;
OriginAttributes attrs;
if (!attrs.PopulateFromOrigin(aOrigin, originNoSuffix)) {
return nullptr;
}
nsCOMPtr<nsIURI> uri;
nsresult rv = NS_NewURI(getter_AddRefs(uri), originNoSuffix);
NS_ENSURE_SUCCESS(rv, nullptr);
return BasePrincipal::CreateContentPrincipal(uri, attrs);
}
already_AddRefed<BasePrincipal> BasePrincipal::CloneForcingOriginAttributes(
const OriginAttributes& aOriginAttributes) {
if (NS_WARN_IF(!IsContentPrincipal())) {
return nullptr;
}
nsAutoCString originNoSuffix;
nsresult rv = GetOriginNoSuffix(originNoSuffix);
NS_ENSURE_SUCCESS(rv, nullptr);
nsIURI* uri = static_cast<ContentPrincipal*>(this)->mURI;
RefPtr<ContentPrincipal> copy = new ContentPrincipal();
rv = copy->Init(uri, aOriginAttributes, originNoSuffix);
NS_ENSURE_SUCCESS(rv, nullptr);
return copy.forget();
}
extensions::WebExtensionPolicy* BasePrincipal::ContentScriptAddonPolicy() {
if (!Is<ExpandedPrincipal>()) {
return nullptr;
}
auto expanded = As<ExpandedPrincipal>();
for (auto& prin : expanded->AllowList()) {
if (auto policy = BasePrincipal::Cast(prin)->AddonPolicy()) {
return policy;
}
}
return nullptr;
}
bool BasePrincipal::AddonAllowsLoad(nsIURI* aURI,
bool aExplicit /* = false */) {
if (Is<ExpandedPrincipal>()) {
return As<ExpandedPrincipal>()->AddonAllowsLoad(aURI, aExplicit);
}
if (auto policy = AddonPolicy()) {
return policy->CanAccessURI(aURI, aExplicit);
}
return false;
}
void BasePrincipal::FinishInit(const nsACString& aOriginNoSuffix,
const OriginAttributes& aOriginAttributes) {
mInitialized = true;
mOriginAttributes = aOriginAttributes;
// First compute the origin suffix since it's infallible.
nsAutoCString originSuffix;
mOriginAttributes.CreateSuffix(originSuffix);
mOriginSuffix = NS_Atomize(originSuffix);
MOZ_ASSERT(!aOriginNoSuffix.IsEmpty());
mOriginNoSuffix = NS_Atomize(aOriginNoSuffix);
}
void BasePrincipal::FinishInit(BasePrincipal* aOther,
const OriginAttributes& aOriginAttributes) {
mInitialized = true;
mOriginAttributes = aOriginAttributes;
// First compute the origin suffix since it's infallible.
nsAutoCString originSuffix;
mOriginAttributes.CreateSuffix(originSuffix);
mOriginSuffix = NS_Atomize(originSuffix);
mOriginNoSuffix = aOther->mOriginNoSuffix;
mHasExplicitDomain = aOther->mHasExplicitDomain;
}
bool SiteIdentifier::Equals(const SiteIdentifier& aOther) const {
MOZ_ASSERT(IsInitialized());
MOZ_ASSERT(aOther.IsInitialized());
return mPrincipal->FastEquals(aOther.mPrincipal);
}
} // namespace mozilla
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