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gecko-dev/extensions/cookie/nsPermissionManager.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/Attributes.h"
#include "mozilla/DebugOnly.h"
#include "mozilla/dom/ContentParent.h"
#include "mozilla/dom/ContentChild.h"
#include "mozilla/unused.h"
#include "nsPermissionManager.h"
#include "nsPermission.h"
#include "nsCRT.h"
#include "nsNetUtil.h"
#include "nsCOMArray.h"
#include "nsArrayEnumerator.h"
#include "nsTArray.h"
#include "nsReadableUtils.h"
#include "nsILineInputStream.h"
#include "nsIIDNService.h"
#include "nsAppDirectoryServiceDefs.h"
#include "prprf.h"
#include "mozilla/storage.h"
#include "mozilla/Attributes.h"
#include "nsXULAppAPI.h"
#include "nsIPrincipal.h"
#include "nsContentUtils.h"
#include "nsIScriptSecurityManager.h"
#include "nsIAppsService.h"
#include "mozIApplication.h"
#include "nsIEffectiveTLDService.h"
#include "nsPIDOMWindow.h"
#include "nsIDocument.h"
#include "mozilla/net/NeckoMessageUtils.h"
static nsPermissionManager *gPermissionManager = nullptr;
using mozilla::dom::ContentParent;
using mozilla::dom::ContentChild;
using mozilla::unused; // ha!
static bool
IsChildProcess()
{
return XRE_GetProcessType() == GeckoProcessType_Content;
}
/**
* @returns The child process object, or if we are not in the child
* process, nullptr.
*/
static ContentChild*
ChildProcess()
{
if (IsChildProcess()) {
ContentChild* cpc = ContentChild::GetSingleton();
if (!cpc)
NS_RUNTIMEABORT("Content Process is nullptr!");
return cpc;
}
return nullptr;
}
#define ENSURE_NOT_CHILD_PROCESS_(onError) \
PR_BEGIN_MACRO \
if (IsChildProcess()) { \
NS_ERROR("Cannot perform action in content process!"); \
onError \
} \
PR_END_MACRO
#define ENSURE_NOT_CHILD_PROCESS \
ENSURE_NOT_CHILD_PROCESS_({ return NS_ERROR_NOT_AVAILABLE; })
#define ENSURE_NOT_CHILD_PROCESS_NORET \
ENSURE_NOT_CHILD_PROCESS_(;)
////////////////////////////////////////////////////////////////////////////////
namespace {
nsresult
GetPrincipal(const nsACString& aHost, uint32_t aAppId, bool aIsInBrowserElement,
nsIPrincipal** aPrincipal)
{
nsIScriptSecurityManager* secMan = nsContentUtils::GetSecurityManager();
NS_ENSURE_TRUE(secMan, NS_ERROR_FAILURE);
nsCOMPtr<nsIURI> uri;
nsresult rv = NS_NewURI(getter_AddRefs(uri), aHost);
if (NS_FAILED(rv)) {
// NOTE: most callers will end up here because we don't append "http://" for
// hosts. It's fine to arbitrary use "http://" because, for those entries,
// we will actually just use the host. If we end up here, but the host looks
// like an email address, we use mailto: instead.
nsCString scheme;
if (aHost.FindChar('@') == -1)
scheme = NS_LITERAL_CSTRING("http://");
else
scheme = NS_LITERAL_CSTRING("mailto:");
rv = NS_NewURI(getter_AddRefs(uri), scheme + aHost);
NS_ENSURE_SUCCESS(rv, rv);
}
return secMan->GetAppCodebasePrincipal(uri, aAppId, aIsInBrowserElement, aPrincipal);
}
nsresult
GetPrincipal(nsIURI* aURI, nsIPrincipal** aPrincipal)
{
nsIScriptSecurityManager* secMan = nsContentUtils::GetSecurityManager();
NS_ENSURE_TRUE(secMan, NS_ERROR_FAILURE);
return secMan->GetNoAppCodebasePrincipal(aURI, aPrincipal);
}
nsresult
GetPrincipal(const nsACString& aHost, nsIPrincipal** aPrincipal)
{
return GetPrincipal(aHost, nsIScriptSecurityManager::NO_APP_ID, false, aPrincipal);
}
nsresult
GetHostForPrincipal(nsIPrincipal* aPrincipal, nsACString& aHost)
{
nsCOMPtr<nsIURI> uri;
nsresult rv = aPrincipal->GetURI(getter_AddRefs(uri));
NS_ENSURE_SUCCESS(rv, rv);
uri = NS_GetInnermostURI(uri);
NS_ENSURE_TRUE(uri, NS_ERROR_FAILURE);
rv = uri->GetAsciiHost(aHost);
if (NS_SUCCEEDED(rv) && !aHost.IsEmpty()) {
return NS_OK;
}
// For the mailto scheme, we use the path of the URI. We have to chop off the
// query part if one exists, so we eliminate everything after a ?.
bool isMailTo = false;
if (NS_SUCCEEDED(uri->SchemeIs("mailto", &isMailTo)) && isMailTo) {
rv = uri->GetPath(aHost);
NS_ENSURE_SUCCESS(rv, rv);
int32_t spart = aHost.FindChar('?', 0);
if (spart >= 0) {
aHost.Cut(spart, aHost.Length() - spart);
}
return NS_OK;
}
// Some entries like "file://" uses the origin.
rv = aPrincipal->GetOrigin(getter_Copies(aHost));
if (NS_SUCCEEDED(rv) && !aHost.IsEmpty()) {
return NS_OK;
}
return NS_ERROR_UNEXPECTED;
}
nsCString
GetNextSubDomainForHost(const nsACString& aHost)
{
nsCOMPtr<nsIEffectiveTLDService> tldService =
do_GetService(NS_EFFECTIVETLDSERVICE_CONTRACTID);
if (!tldService) {
NS_ERROR("Should have a tld service!");
return EmptyCString();
}
nsCString subDomain;
nsresult rv = tldService->GetNextSubDomain(aHost, subDomain);
// We can fail if there is no more subdomain or if the host can't have a
// subdomain.
if (NS_FAILED(rv)) {
return EmptyCString();
}
return subDomain;
}
class AppClearDataObserver MOZ_FINAL : public nsIObserver {
~AppClearDataObserver() {}
public:
NS_DECL_ISUPPORTS
// nsIObserver implementation.
NS_IMETHODIMP
Observe(nsISupports *aSubject, const char *aTopic, const char16_t *data)
{
MOZ_ASSERT(!nsCRT::strcmp(aTopic, "webapps-clear-data"));
nsCOMPtr<mozIApplicationClearPrivateDataParams> params =
do_QueryInterface(aSubject);
if (!params) {
NS_ERROR("'webapps-clear-data' notification's subject should be a mozIApplicationClearPrivateDataParams");
return NS_ERROR_UNEXPECTED;
}
uint32_t appId;
nsresult rv = params->GetAppId(&appId);
NS_ENSURE_SUCCESS(rv, rv);
bool browserOnly;
rv = params->GetBrowserOnly(&browserOnly);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIPermissionManager> permManager = do_GetService("@mozilla.org/permissionmanager;1");
return permManager->RemovePermissionsForApp(appId, browserOnly);
}
};
NS_IMPL_ISUPPORTS(AppClearDataObserver, nsIObserver)
static bool
IsExpandedPrincipal(nsIPrincipal* aPrincipal)
{
nsCOMPtr<nsIExpandedPrincipal> ep = do_QueryInterface(aPrincipal);
return !!ep;
}
} // anonymous namespace
////////////////////////////////////////////////////////////////////////////////
nsPermissionManager::PermissionKey::PermissionKey(nsIPrincipal* aPrincipal)
{
MOZ_ALWAYS_TRUE(NS_SUCCEEDED(GetHostForPrincipal(aPrincipal, mHost)));
MOZ_ALWAYS_TRUE(NS_SUCCEEDED(aPrincipal->GetAppId(&mAppId)));
MOZ_ALWAYS_TRUE(NS_SUCCEEDED(aPrincipal->GetIsInBrowserElement(&mIsInBrowserElement)));
}
/**
* Simple callback used by |AsyncClose| to trigger a treatment once
* the database is closed.
*
* Note: Beware that, if you hold onto a |CloseDatabaseListener| from a
* |nsPermissionManager|, this will create a cycle.
*
* Note: Once the callback has been called this DeleteFromMozHostListener cannot
* be reused.
*/
class CloseDatabaseListener MOZ_FINAL : public mozIStorageCompletionCallback
{
~CloseDatabaseListener() {}
public:
NS_DECL_ISUPPORTS
NS_DECL_MOZISTORAGECOMPLETIONCALLBACK
/**
* @param aManager The owning manager.
* @param aRebuildOnSuccess If |true|, reinitialize the database once
* it has been closed. Otherwise, do nothing such.
*/
CloseDatabaseListener(nsPermissionManager* aManager,
bool aRebuildOnSuccess);
protected:
nsRefPtr<nsPermissionManager> mManager;
bool mRebuildOnSuccess;
};
NS_IMPL_ISUPPORTS(CloseDatabaseListener, mozIStorageCompletionCallback)
CloseDatabaseListener::CloseDatabaseListener(nsPermissionManager* aManager,
bool aRebuildOnSuccess)
: mManager(aManager)
, mRebuildOnSuccess(aRebuildOnSuccess)
{
}
NS_IMETHODIMP
CloseDatabaseListener::Complete(nsresult, nsISupports*)
{
// Help breaking cycles
nsRefPtr<nsPermissionManager> manager = mManager.forget();
if (mRebuildOnSuccess && !manager->mIsShuttingDown) {
return manager->InitDB(true);
}
return NS_OK;
}
/**
* Simple callback used by |RemoveAllInternal| to trigger closing
* the database and reinitializing it.
*
* Note: Beware that, if you hold onto a |DeleteFromMozHostListener| from a
* |nsPermissionManager|, this will create a cycle.
*
* Note: Once the callback has been called this DeleteFromMozHostListener cannot
* be reused.
*/
class DeleteFromMozHostListener MOZ_FINAL : public mozIStorageStatementCallback
{
~DeleteFromMozHostListener() {}
public:
NS_DECL_ISUPPORTS
NS_DECL_MOZISTORAGESTATEMENTCALLBACK
/**
* @param aManager The owning manager.
*/
DeleteFromMozHostListener(nsPermissionManager* aManager);
protected:
nsRefPtr<nsPermissionManager> mManager;
};
NS_IMPL_ISUPPORTS(DeleteFromMozHostListener, mozIStorageStatementCallback)
DeleteFromMozHostListener::
DeleteFromMozHostListener(nsPermissionManager* aManager)
: mManager(aManager)
{
}
NS_IMETHODIMP DeleteFromMozHostListener::HandleResult(mozIStorageResultSet *)
{
MOZ_CRASH("Should not get any results");
}
NS_IMETHODIMP DeleteFromMozHostListener::HandleError(mozIStorageError *)
{
// Errors are handled in |HandleCompletion|
return NS_OK;
}
NS_IMETHODIMP DeleteFromMozHostListener::HandleCompletion(uint16_t aReason)
{
// Help breaking cycles
nsRefPtr<nsPermissionManager> manager = mManager.forget();
if (aReason == REASON_ERROR) {
manager->CloseDB(true);
}
return NS_OK;
}
/* static */ void
nsPermissionManager::AppClearDataObserverInit()
{
nsCOMPtr<nsIObserverService> observerService = do_GetService("@mozilla.org/observer-service;1");
observerService->AddObserver(new AppClearDataObserver(), "webapps-clear-data", /* holdsWeak= */ false);
}
////////////////////////////////////////////////////////////////////////////////
// nsPermissionManager Implementation
static const char kPermissionsFileName[] = "permissions.sqlite";
#define HOSTS_SCHEMA_VERSION 3
static const char kHostpermFileName[] = "hostperm.1";
static const char kPermissionChangeNotification[] = PERM_CHANGE_NOTIFICATION;
NS_IMPL_ISUPPORTS(nsPermissionManager, nsIPermissionManager, nsIObserver, nsISupportsWeakReference)
nsPermissionManager::nsPermissionManager()
: mLargestID(0)
, mIsShuttingDown(false)
{
}
nsPermissionManager::~nsPermissionManager()
{
RemoveAllFromMemory();
gPermissionManager = nullptr;
}
// static
nsIPermissionManager*
nsPermissionManager::GetXPCOMSingleton()
{
if (gPermissionManager) {
NS_ADDREF(gPermissionManager);
return gPermissionManager;
}
// Create a new singleton nsPermissionManager.
// We AddRef only once since XPCOM has rules about the ordering of module
// teardowns - by the time our module destructor is called, it's too late to
// Release our members, since GC cycles have already been completed and
// would result in serious leaks.
// See bug 209571.
gPermissionManager = new nsPermissionManager();
if (gPermissionManager) {
NS_ADDREF(gPermissionManager);
if (NS_FAILED(gPermissionManager->Init())) {
NS_RELEASE(gPermissionManager);
}
}
return gPermissionManager;
}
nsresult
nsPermissionManager::Init()
{
nsresult rv;
mObserverService = do_GetService("@mozilla.org/observer-service;1", &rv);
if (NS_SUCCEEDED(rv)) {
mObserverService->AddObserver(this, "profile-before-change", true);
mObserverService->AddObserver(this, "profile-do-change", true);
}
if (IsChildProcess()) {
// Get the permissions from the parent process
InfallibleTArray<IPC::Permission> perms;
ChildProcess()->SendReadPermissions(&perms);
for (uint32_t i = 0; i < perms.Length(); i++) {
const IPC::Permission &perm = perms[i];
nsCOMPtr<nsIPrincipal> principal;
rv = GetPrincipal(perm.host, perm.appId, perm.isInBrowserElement, getter_AddRefs(principal));
NS_ENSURE_SUCCESS(rv, rv);
AddInternal(principal, perm.type, perm.capability, 0, perm.expireType,
perm.expireTime, eNotify, eNoDBOperation);
}
// Stop here; we don't need the DB in the child process
return NS_OK;
}
// ignore failure here, since it's non-fatal (we can run fine without
// persistent storage - e.g. if there's no profile).
// XXX should we tell the user about this?
InitDB(false);
return NS_OK;
}
nsresult
nsPermissionManager::InitDB(bool aRemoveFile)
{
nsCOMPtr<nsIFile> permissionsFile;
nsresult rv = NS_GetSpecialDirectory(NS_APP_PERMISSION_PARENT_DIR, getter_AddRefs(permissionsFile));
if (NS_FAILED(rv)) {
rv = NS_GetSpecialDirectory(NS_APP_USER_PROFILE_50_DIR, getter_AddRefs(permissionsFile));
}
NS_ENSURE_SUCCESS(rv, NS_ERROR_UNEXPECTED);
rv = permissionsFile->AppendNative(NS_LITERAL_CSTRING(kPermissionsFileName));
NS_ENSURE_SUCCESS(rv, rv);
if (aRemoveFile) {
bool exists = false;
rv = permissionsFile->Exists(&exists);
NS_ENSURE_SUCCESS(rv, rv);
if (exists) {
rv = permissionsFile->Remove(false);
NS_ENSURE_SUCCESS(rv, rv);
}
}
nsCOMPtr<mozIStorageService> storage = do_GetService(MOZ_STORAGE_SERVICE_CONTRACTID);
if (!storage)
return NS_ERROR_UNEXPECTED;
// cache a connection to the hosts database
rv = storage->OpenDatabase(permissionsFile, getter_AddRefs(mDBConn));
NS_ENSURE_SUCCESS(rv, rv);
bool ready;
mDBConn->GetConnectionReady(&ready);
if (!ready) {
// delete and try again
rv = permissionsFile->Remove(false);
NS_ENSURE_SUCCESS(rv, rv);
rv = storage->OpenDatabase(permissionsFile, getter_AddRefs(mDBConn));
NS_ENSURE_SUCCESS(rv, rv);
mDBConn->GetConnectionReady(&ready);
if (!ready)
return NS_ERROR_UNEXPECTED;
}
bool tableExists = false;
mDBConn->TableExists(NS_LITERAL_CSTRING("moz_hosts"), &tableExists);
if (!tableExists) {
rv = CreateTable();
NS_ENSURE_SUCCESS(rv, rv);
} else {
// table already exists; check the schema version before reading
int32_t dbSchemaVersion;
rv = mDBConn->GetSchemaVersion(&dbSchemaVersion);
NS_ENSURE_SUCCESS(rv, rv);
switch (dbSchemaVersion) {
// upgrading.
// every time you increment the database schema, you need to implement
// the upgrading code from the previous version to the new one.
// fall through to current version
case 1:
{
// previous non-expiry version of database. Upgrade it by adding the
// expiration columns
rv = mDBConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
"ALTER TABLE moz_hosts ADD expireType INTEGER"));
NS_ENSURE_SUCCESS(rv, rv);
rv = mDBConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
"ALTER TABLE moz_hosts ADD expireTime INTEGER"));
NS_ENSURE_SUCCESS(rv, rv);
}
// fall through to the next upgrade
// TODO: we want to make default version as version 2 in order to fix bug 784875.
case 0:
case 2:
{
// Add appId/isInBrowserElement fields.
rv = mDBConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
"ALTER TABLE moz_hosts ADD appId INTEGER"));
NS_ENSURE_SUCCESS(rv, rv);
rv = mDBConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
"ALTER TABLE moz_hosts ADD isInBrowserElement INTEGER"));
NS_ENSURE_SUCCESS(rv, rv);
rv = mDBConn->SetSchemaVersion(HOSTS_SCHEMA_VERSION);
NS_ENSURE_SUCCESS(rv, rv);
}
// fall through to the next upgrade
// current version.
case HOSTS_SCHEMA_VERSION:
break;
// downgrading.
// if columns have been added to the table, we can still use the ones we
// understand safely. if columns have been deleted or altered, just
// blow away the table and start from scratch! if you change the way
// a column is interpreted, make sure you also change its name so this
// check will catch it.
default:
{
// check if all the expected columns exist
nsCOMPtr<mozIStorageStatement> stmt;
rv = mDBConn->CreateStatement(NS_LITERAL_CSTRING(
"SELECT host, type, permission, expireType, expireTime, appId, isInBrowserElement FROM moz_hosts"),
getter_AddRefs(stmt));
if (NS_SUCCEEDED(rv))
break;
// our columns aren't there - drop the table!
rv = mDBConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING("DROP TABLE moz_hosts"));
NS_ENSURE_SUCCESS(rv, rv);
rv = CreateTable();
NS_ENSURE_SUCCESS(rv, rv);
}
break;
}
}
// make operations on the table asynchronous, for performance
mDBConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING("PRAGMA synchronous = OFF"));
// cache frequently used statements (for insertion, deletion, and updating)
rv = mDBConn->CreateAsyncStatement(NS_LITERAL_CSTRING(
"INSERT INTO moz_hosts "
"(id, host, type, permission, expireType, expireTime, appId, isInBrowserElement) "
"VALUES (?1, ?2, ?3, ?4, ?5, ?6, ?7, ?8)"), getter_AddRefs(mStmtInsert));
NS_ENSURE_SUCCESS(rv, rv);
rv = mDBConn->CreateAsyncStatement(NS_LITERAL_CSTRING(
"DELETE FROM moz_hosts "
"WHERE id = ?1"), getter_AddRefs(mStmtDelete));
NS_ENSURE_SUCCESS(rv, rv);
rv = mDBConn->CreateAsyncStatement(NS_LITERAL_CSTRING(
"UPDATE moz_hosts "
"SET permission = ?2, expireType= ?3, expireTime = ?4 WHERE id = ?1"),
getter_AddRefs(mStmtUpdate));
NS_ENSURE_SUCCESS(rv, rv);
// check whether to import or just read in the db
if (tableExists)
return Read();
return Import();
}
// sets the schema version and creates the moz_hosts table.
nsresult
nsPermissionManager::CreateTable()
{
// set the schema version, before creating the table
nsresult rv = mDBConn->SetSchemaVersion(HOSTS_SCHEMA_VERSION);
if (NS_FAILED(rv)) return rv;
// create the table
// SQL also lives in automation.py.in. If you change this SQL change that
// one too.
return mDBConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
"CREATE TABLE moz_hosts ("
" id INTEGER PRIMARY KEY"
",host TEXT"
",type TEXT"
",permission INTEGER"
",expireType INTEGER"
",expireTime INTEGER"
",appId INTEGER"
",isInBrowserElement INTEGER"
")"));
}
NS_IMETHODIMP
nsPermissionManager::Add(nsIURI *aURI,
const char *aType,
uint32_t aPermission,
uint32_t aExpireType,
int64_t aExpireTime)
{
NS_ENSURE_ARG_POINTER(aURI);
nsCOMPtr<nsIPrincipal> principal;
nsresult rv = GetPrincipal(aURI, getter_AddRefs(principal));
NS_ENSURE_SUCCESS(rv, rv);
return AddFromPrincipal(principal, aType, aPermission, aExpireType, aExpireTime);
}
NS_IMETHODIMP
nsPermissionManager::AddFromPrincipal(nsIPrincipal* aPrincipal,
const char* aType, uint32_t aPermission,
uint32_t aExpireType, int64_t aExpireTime)
{
ENSURE_NOT_CHILD_PROCESS;
NS_ENSURE_ARG_POINTER(aPrincipal);
NS_ENSURE_ARG_POINTER(aType);
NS_ENSURE_TRUE(aExpireType == nsIPermissionManager::EXPIRE_NEVER ||
aExpireType == nsIPermissionManager::EXPIRE_TIME ||
aExpireType == nsIPermissionManager::EXPIRE_SESSION,
NS_ERROR_INVALID_ARG);
// Skip addition if the permission is already expired. Note that EXPIRE_SESSION only
// honors expireTime if it is nonzero.
if ((aExpireType == nsIPermissionManager::EXPIRE_TIME ||
(aExpireType == nsIPermissionManager::EXPIRE_SESSION && aExpireTime != 0)) &&
aExpireTime <= (PR_Now() / 1000)) {
return NS_OK;
}
// We don't add the system principal because it actually has no URI and we
// always allow action for them.
if (nsContentUtils::IsSystemPrincipal(aPrincipal)) {
return NS_OK;
}
// Permissions may not be added to expanded principals.
if (IsExpandedPrincipal(aPrincipal)) {
return NS_ERROR_INVALID_ARG;
}
return AddInternal(aPrincipal, nsDependentCString(aType), aPermission, 0,
aExpireType, aExpireTime, eNotify, eWriteToDB);
}
nsresult
nsPermissionManager::AddInternal(nsIPrincipal* aPrincipal,
const nsAFlatCString &aType,
uint32_t aPermission,
int64_t aID,
uint32_t aExpireType,
int64_t aExpireTime,
NotifyOperationType aNotifyOperation,
DBOperationType aDBOperation)
{
nsAutoCString host;
nsresult rv = GetHostForPrincipal(aPrincipal, host);
NS_ENSURE_SUCCESS(rv, rv);
if (!IsChildProcess()) {
uint32_t appId;
rv = aPrincipal->GetAppId(&appId);
NS_ENSURE_SUCCESS(rv, rv);
bool isInBrowserElement;
rv = aPrincipal->GetIsInBrowserElement(&isInBrowserElement);
NS_ENSURE_SUCCESS(rv, rv);
IPC::Permission permission(host, appId, isInBrowserElement, aType,
aPermission, aExpireType, aExpireTime);
nsTArray<ContentParent*> cplist;
ContentParent::GetAll(cplist);
for (uint32_t i = 0; i < cplist.Length(); ++i) {
ContentParent* cp = cplist[i];
if (cp->NeedsPermissionsUpdate())
unused << cp->SendAddPermission(permission);
}
}
// look up the type index
int32_t typeIndex = GetTypeIndex(aType.get(), true);
NS_ENSURE_TRUE(typeIndex != -1, NS_ERROR_OUT_OF_MEMORY);
// When an entry already exists, PutEntry will return that, instead
// of adding a new one
nsRefPtr<PermissionKey> key = new PermissionKey(aPrincipal);
PermissionHashKey* entry = mPermissionTable.PutEntry(key);
if (!entry) return NS_ERROR_FAILURE;
if (!entry->GetKey()) {
mPermissionTable.RawRemoveEntry(entry);
return NS_ERROR_OUT_OF_MEMORY;
}
// figure out the transaction type, and get any existing permission value
OperationType op;
int32_t index = entry->GetPermissionIndex(typeIndex);
if (index == -1) {
if (aPermission == nsIPermissionManager::UNKNOWN_ACTION)
op = eOperationNone;
else
op = eOperationAdding;
} else {
PermissionEntry oldPermissionEntry = entry->GetPermissions()[index];
// remove the permission if the permission is UNKNOWN, update the
// permission if its value or expire type have changed OR if the time has
// changed and the expire type is time, otherwise, don't modify. There's
// no need to modify a permission that doesn't expire with time when the
// only thing changed is the expire time.
if (aPermission == oldPermissionEntry.mPermission &&
aExpireType == oldPermissionEntry.mExpireType &&
(aExpireType == nsIPermissionManager::EXPIRE_NEVER ||
aExpireTime == oldPermissionEntry.mExpireTime))
op = eOperationNone;
else if (aPermission == nsIPermissionManager::UNKNOWN_ACTION)
op = eOperationRemoving;
else
op = eOperationChanging;
}
// do the work for adding, deleting, or changing a permission:
// update the in-memory list, write to the db, and notify consumers.
int64_t id;
switch (op) {
case eOperationNone:
{
// nothing to do
return NS_OK;
}
case eOperationAdding:
{
if (aDBOperation == eWriteToDB) {
// we'll be writing to the database - generate a known unique id
id = ++mLargestID;
} else {
// we're reading from the database - use the id already assigned
id = aID;
}
entry->GetPermissions().AppendElement(PermissionEntry(id, typeIndex, aPermission, aExpireType, aExpireTime));
if (aDBOperation == eWriteToDB && aExpireType != nsIPermissionManager::EXPIRE_SESSION) {
uint32_t appId;
rv = aPrincipal->GetAppId(&appId);
NS_ENSURE_SUCCESS(rv, rv);
bool isInBrowserElement;
rv = aPrincipal->GetIsInBrowserElement(&isInBrowserElement);
NS_ENSURE_SUCCESS(rv, rv);
UpdateDB(op, mStmtInsert, id, host, aType, aPermission, aExpireType, aExpireTime, appId, isInBrowserElement);
}
if (aNotifyOperation == eNotify) {
NotifyObserversWithPermission(host,
entry->GetKey()->mAppId,
entry->GetKey()->mIsInBrowserElement,
mTypeArray[typeIndex],
aPermission,
aExpireType,
aExpireTime,
MOZ_UTF16("added"));
}
break;
}
case eOperationRemoving:
{
PermissionEntry oldPermissionEntry = entry->GetPermissions()[index];
id = oldPermissionEntry.mID;
entry->GetPermissions().RemoveElementAt(index);
if (aDBOperation == eWriteToDB)
// We care only about the id here so we pass dummy values for all other
// parameters.
UpdateDB(op, mStmtDelete, id, EmptyCString(), EmptyCString(), 0,
nsIPermissionManager::EXPIRE_NEVER, 0, 0, false);
if (aNotifyOperation == eNotify) {
NotifyObserversWithPermission(host,
entry->GetKey()->mAppId,
entry->GetKey()->mIsInBrowserElement,
mTypeArray[typeIndex],
oldPermissionEntry.mPermission,
oldPermissionEntry.mExpireType,
oldPermissionEntry.mExpireTime,
MOZ_UTF16("deleted"));
}
// If there are no more permissions stored for that entry, clear it.
if (entry->GetPermissions().IsEmpty()) {
mPermissionTable.RawRemoveEntry(entry);
}
break;
}
case eOperationChanging:
{
id = entry->GetPermissions()[index].mID;
// If the new expireType is EXPIRE_SESSION, then we have to keep a
// copy of the previous permission/expireType values. This cached value will be
// used when restoring the permissions of an app.
if (entry->GetPermissions()[index].mExpireType != nsIPermissionManager::EXPIRE_SESSION &&
aExpireType == nsIPermissionManager::EXPIRE_SESSION) {
entry->GetPermissions()[index].mNonSessionPermission = entry->GetPermissions()[index].mPermission;
entry->GetPermissions()[index].mNonSessionExpireType = entry->GetPermissions()[index].mExpireType;
entry->GetPermissions()[index].mNonSessionExpireTime = entry->GetPermissions()[index].mExpireTime;
} else if (aExpireType != nsIPermissionManager::EXPIRE_SESSION) {
entry->GetPermissions()[index].mNonSessionPermission = aPermission;
entry->GetPermissions()[index].mNonSessionExpireType = aExpireType;
entry->GetPermissions()[index].mNonSessionExpireTime = aExpireTime;
}
entry->GetPermissions()[index].mPermission = aPermission;
entry->GetPermissions()[index].mExpireType = aExpireType;
entry->GetPermissions()[index].mExpireTime = aExpireTime;
if (aDBOperation == eWriteToDB && aExpireType != nsIPermissionManager::EXPIRE_SESSION)
// We care only about the id, the permission and expireType/expireTime here.
// We pass dummy values for all other parameters.
UpdateDB(op, mStmtUpdate, id, EmptyCString(), EmptyCString(),
aPermission, aExpireType, aExpireTime, 0, false);
if (aNotifyOperation == eNotify) {
NotifyObserversWithPermission(host,
entry->GetKey()->mAppId,
entry->GetKey()->mIsInBrowserElement,
mTypeArray[typeIndex],
aPermission,
aExpireType,
aExpireTime,
MOZ_UTF16("changed"));
}
break;
}
}
return NS_OK;
}
NS_IMETHODIMP
nsPermissionManager::Remove(const nsACString &aHost,
const char *aType)
{
nsCOMPtr<nsIPrincipal> principal;
nsresult rv = GetPrincipal(aHost, getter_AddRefs(principal));
NS_ENSURE_SUCCESS(rv, rv);
return RemoveFromPrincipal(principal, aType);
}
NS_IMETHODIMP
nsPermissionManager::RemoveFromPrincipal(nsIPrincipal* aPrincipal,
const char* aType)
{
ENSURE_NOT_CHILD_PROCESS;
NS_ENSURE_ARG_POINTER(aPrincipal);
NS_ENSURE_ARG_POINTER(aType);
// System principals are never added to the database, no need to remove them.
if (nsContentUtils::IsSystemPrincipal(aPrincipal)) {
return NS_OK;
}
// Permissions may not be added to expanded principals.
if (IsExpandedPrincipal(aPrincipal)) {
return NS_ERROR_INVALID_ARG;
}
// AddInternal() handles removal, just let it do the work
return AddInternal(aPrincipal,
nsDependentCString(aType),
nsIPermissionManager::UNKNOWN_ACTION,
0,
nsIPermissionManager::EXPIRE_NEVER,
0,
eNotify,
eWriteToDB);
}
NS_IMETHODIMP
nsPermissionManager::RemoveAll()
{
ENSURE_NOT_CHILD_PROCESS;
return RemoveAllInternal(true);
}
void
nsPermissionManager::CloseDB(bool aRebuildOnSuccess)
{
// Null the statements, this will finalize them.
mStmtInsert = nullptr;
mStmtDelete = nullptr;
mStmtUpdate = nullptr;
if (mDBConn) {
mozIStorageCompletionCallback* cb = new CloseDatabaseListener(this,
aRebuildOnSuccess);
mozilla::DebugOnly<nsresult> rv = mDBConn->AsyncClose(cb);
MOZ_ASSERT(NS_SUCCEEDED(rv));
mDBConn = nullptr; // Avoid race conditions
}
}
nsresult
nsPermissionManager::RemoveAllInternal(bool aNotifyObservers)
{
// Remove from memory and notify immediately. Since the in-memory
// database is authoritative, we do not need confirmation from the
// on-disk database to notify observers.
RemoveAllFromMemory();
if (aNotifyObservers) {
NotifyObservers(nullptr, MOZ_UTF16("cleared"));
}
// clear the db
if (mDBConn) {
nsCOMPtr<mozIStorageAsyncStatement> removeStmt;
nsresult rv = mDBConn->
CreateAsyncStatement(NS_LITERAL_CSTRING(
"DELETE FROM moz_hosts"
), getter_AddRefs(removeStmt));
MOZ_ASSERT(NS_SUCCEEDED(rv));
if (!removeStmt) {
return NS_ERROR_UNEXPECTED;
}
nsCOMPtr<mozIStoragePendingStatement> pending;
mozIStorageStatementCallback* cb = new DeleteFromMozHostListener(this);
rv = removeStmt->ExecuteAsync(cb, getter_AddRefs(pending));
MOZ_ASSERT(NS_SUCCEEDED(rv));
return rv;
}
return NS_OK;
}
NS_IMETHODIMP
nsPermissionManager::TestExactPermission(nsIURI *aURI,
const char *aType,
uint32_t *aPermission)
{
nsCOMPtr<nsIPrincipal> principal;
nsresult rv = GetPrincipal(aURI, getter_AddRefs(principal));
NS_ENSURE_SUCCESS(rv, rv);
return TestExactPermissionFromPrincipal(principal, aType, aPermission);
}
NS_IMETHODIMP
nsPermissionManager::TestExactPermissionFromPrincipal(nsIPrincipal* aPrincipal,
const char* aType,
uint32_t* aPermission)
{
return CommonTestPermission(aPrincipal, aType, aPermission, true, true);
}
NS_IMETHODIMP
nsPermissionManager::TestExactPermanentPermission(nsIPrincipal* aPrincipal,
const char* aType,
uint32_t* aPermission)
{
return CommonTestPermission(aPrincipal, aType, aPermission, true, false);
}
NS_IMETHODIMP
nsPermissionManager::TestPermission(nsIURI *aURI,
const char *aType,
uint32_t *aPermission)
{
nsCOMPtr<nsIPrincipal> principal;
nsresult rv = GetPrincipal(aURI, getter_AddRefs(principal));
NS_ENSURE_SUCCESS(rv, rv);
return TestPermissionFromPrincipal(principal, aType, aPermission);
}
NS_IMETHODIMP
nsPermissionManager::TestPermissionFromWindow(nsIDOMWindow* aWindow,
const char* aType,
uint32_t* aPermission)
{
nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(aWindow);
NS_ENSURE_TRUE(window, NS_NOINTERFACE);
nsPIDOMWindow* innerWindow = window->IsInnerWindow() ?
window.get() :
window->GetCurrentInnerWindow();
// Get the document for security check
nsCOMPtr<nsIDocument> document = innerWindow->GetExtantDoc();
NS_ENSURE_TRUE(document, NS_NOINTERFACE);
nsCOMPtr<nsIPrincipal> principal = document->NodePrincipal();
return TestPermissionFromPrincipal(principal, aType, aPermission);
}
NS_IMETHODIMP
nsPermissionManager::TestPermissionFromPrincipal(nsIPrincipal* aPrincipal,
const char* aType,
uint32_t* aPermission)
{
return CommonTestPermission(aPrincipal, aType, aPermission, false, true);
}
NS_IMETHODIMP
nsPermissionManager::GetPermissionObject(nsIPrincipal* aPrincipal,
const char* aType,
bool aExactHostMatch,
nsIPermission** aResult)
{
NS_ENSURE_ARG_POINTER(aPrincipal);
NS_ENSURE_ARG_POINTER(aType);
*aResult = nullptr;
if (nsContentUtils::IsSystemPrincipal(aPrincipal)) {
return NS_OK;
}
// Querying the permission object of an nsEP is non-sensical.
if (IsExpandedPrincipal(aPrincipal)) {
return NS_ERROR_INVALID_ARG;
}
nsAutoCString host;
nsresult rv = GetHostForPrincipal(aPrincipal, host);
NS_ENSURE_SUCCESS(rv, rv);
int32_t typeIndex = GetTypeIndex(aType, false);
// If type == -1, the type isn't known,
// so just return NS_OK
if (typeIndex == -1) return NS_OK;
uint32_t appId;
rv = aPrincipal->GetAppId(&appId);
NS_ENSURE_SUCCESS(rv, rv);
bool isInBrowserElement;
rv = aPrincipal->GetIsInBrowserElement(&isInBrowserElement);
NS_ENSURE_SUCCESS(rv, rv);
PermissionHashKey* entry = GetPermissionHashKey(host, appId, isInBrowserElement,
typeIndex, aExactHostMatch);
if (!entry) {
return NS_OK;
}
// We don't call GetPermission(typeIndex) because that returns a fake
// UNKNOWN_ACTION entry if there is no match.
int32_t idx = entry->GetPermissionIndex(typeIndex);
if (-1 == idx) {
return NS_OK;
}
PermissionEntry& perm = entry->GetPermissions()[idx];
nsCOMPtr<nsIPermission> r = new nsPermission(entry->GetKey()->mHost,
entry->GetKey()->mAppId,
entry->GetKey()->mIsInBrowserElement,
mTypeArray.ElementAt(perm.mType),
perm.mPermission,
perm.mExpireType,
perm.mExpireTime);
r.forget(aResult);
return NS_OK;
}
nsresult
nsPermissionManager::CommonTestPermission(nsIPrincipal* aPrincipal,
const char *aType,
uint32_t *aPermission,
bool aExactHostMatch,
bool aIncludingSession)
{
NS_ENSURE_ARG_POINTER(aPrincipal);
NS_ENSURE_ARG_POINTER(aType);
if (nsContentUtils::IsSystemPrincipal(aPrincipal)) {
*aPermission = nsIPermissionManager::ALLOW_ACTION;
return NS_OK;
}
// Set the default.
*aPermission = nsIPermissionManager::UNKNOWN_ACTION;
// For expanded principals, we want to iterate over the whitelist and see
// if the permission is granted for any of them.
nsCOMPtr<nsIExpandedPrincipal> ep = do_QueryInterface(aPrincipal);
if (ep) {
nsTArray<nsCOMPtr<nsIPrincipal>>* whitelist;
nsresult rv = ep->GetWhiteList(&whitelist);
NS_ENSURE_SUCCESS(rv, rv);
for (size_t i = 0; i < whitelist->Length(); ++i) {
uint32_t perm;
rv = CommonTestPermission(whitelist->ElementAt(i), aType, &perm, aExactHostMatch,
aIncludingSession);
NS_ENSURE_SUCCESS(rv, rv);
if (perm == nsIPermissionManager::ALLOW_ACTION) {
*aPermission = perm;
return NS_OK;
} else if (perm == nsIPermissionManager::PROMPT_ACTION) {
// Store it, but keep going to see if we can do better.
*aPermission = perm;
}
}
return NS_OK;
}
nsAutoCString host;
nsresult rv = GetHostForPrincipal(aPrincipal, host);
NS_ENSURE_SUCCESS(rv, rv);
int32_t typeIndex = GetTypeIndex(aType, false);
// If type == -1, the type isn't known,
// so just return NS_OK
if (typeIndex == -1) return NS_OK;
uint32_t appId;
rv = aPrincipal->GetAppId(&appId);
NS_ENSURE_SUCCESS(rv, rv);
bool isInBrowserElement;
rv = aPrincipal->GetIsInBrowserElement(&isInBrowserElement);
NS_ENSURE_SUCCESS(rv, rv);
PermissionHashKey* entry = GetPermissionHashKey(host, appId, isInBrowserElement,
typeIndex, aExactHostMatch);
if (!entry ||
(!aIncludingSession &&
entry->GetPermission(typeIndex).mNonSessionExpireType ==
nsIPermissionManager::EXPIRE_SESSION)) {
return NS_OK;
}
*aPermission = aIncludingSession
? entry->GetPermission(typeIndex).mPermission
: entry->GetPermission(typeIndex).mNonSessionPermission;
return NS_OK;
}
// Returns PermissionHashKey for a given { host, appId, isInBrowserElement } tuple.
// This is not simply using PermissionKey because we will walk-up domains in
// case of |host| contains sub-domains.
// Returns null if nothing found.
// Also accepts host on the format "<foo>". This will perform an exact match
// lookup as the string doesn't contain any dots.
nsPermissionManager::PermissionHashKey*
nsPermissionManager::GetPermissionHashKey(const nsACString& aHost,
uint32_t aAppId,
bool aIsInBrowserElement,
uint32_t aType,
bool aExactHostMatch)
{
PermissionHashKey* entry = nullptr;
nsRefPtr<PermissionKey> key = new PermissionKey(aHost, aAppId, aIsInBrowserElement);
entry = mPermissionTable.GetEntry(key);
if (entry) {
PermissionEntry permEntry = entry->GetPermission(aType);
// if the entry is expired, remove and keep looking for others.
// Note that EXPIRE_SESSION only honors expireTime if it is nonzero.
if ((permEntry.mExpireType == nsIPermissionManager::EXPIRE_TIME ||
(permEntry.mExpireType == nsIPermissionManager::EXPIRE_SESSION &&
permEntry.mExpireTime != 0)) &&
permEntry.mExpireTime <= (PR_Now() / 1000)) {
nsCOMPtr<nsIPrincipal> principal;
if (NS_FAILED(GetPrincipal(aHost, aAppId, aIsInBrowserElement, getter_AddRefs(principal)))) {
return nullptr;
}
entry = nullptr;
RemoveFromPrincipal(principal, mTypeArray[aType].get());
} else if (permEntry.mPermission == nsIPermissionManager::UNKNOWN_ACTION) {
entry = nullptr;
}
}
if (entry) {
return entry;
}
// If we haven't found an entry, depending on the host, we could try a bit
// harder.
// If this is a file:// URI, we can check for the presence of the magic entry
// <file> which gives permission to all file://. This hack might disappear,
// see bug 817007. Note that we don't require aExactHostMatch to be true for
// that to keep retro-compatibility.
// If this is not a file:// URI, and that aExactHostMatch wasn't true, we can
// check if the base domain has a permission entry.
if (StringBeginsWith(aHost, NS_LITERAL_CSTRING("file://"))) {
return GetPermissionHashKey(NS_LITERAL_CSTRING("<file>"), aAppId, aIsInBrowserElement, aType, true);
}
if (!aExactHostMatch) {
nsCString domain = GetNextSubDomainForHost(aHost);
if (!domain.IsEmpty()) {
return GetPermissionHashKey(domain, aAppId, aIsInBrowserElement, aType, aExactHostMatch);
}
}
// No entry, really...
return nullptr;
}
// helper struct for passing arguments into hash enumeration callback.
struct nsGetEnumeratorData
{
nsGetEnumeratorData(nsCOMArray<nsIPermission> *aArray, const nsTArray<nsCString> *aTypes)
: array(aArray)
, types(aTypes) {}
nsCOMArray<nsIPermission> *array;
const nsTArray<nsCString> *types;
};
static PLDHashOperator
AddPermissionsToList(nsPermissionManager::PermissionHashKey* entry, void *arg)
{
nsGetEnumeratorData *data = static_cast<nsGetEnumeratorData *>(arg);
for (uint32_t i = 0; i < entry->GetPermissions().Length(); ++i) {
nsPermissionManager::PermissionEntry& permEntry = entry->GetPermissions()[i];
nsPermission *perm = new nsPermission(entry->GetKey()->mHost,
entry->GetKey()->mAppId,
entry->GetKey()->mIsInBrowserElement,
data->types->ElementAt(permEntry.mType),
permEntry.mPermission,
permEntry.mExpireType,
permEntry.mExpireTime);
data->array->AppendObject(perm);
}
return PL_DHASH_NEXT;
}
NS_IMETHODIMP nsPermissionManager::GetEnumerator(nsISimpleEnumerator **aEnum)
{
// roll an nsCOMArray of all our permissions, then hand out an enumerator
nsCOMArray<nsIPermission> array;
nsGetEnumeratorData data(&array, &mTypeArray);
mPermissionTable.EnumerateEntries(AddPermissionsToList, &data);
return NS_NewArrayEnumerator(aEnum, array);
}
NS_IMETHODIMP nsPermissionManager::Observe(nsISupports *aSubject, const char *aTopic, const char16_t *someData)
{
ENSURE_NOT_CHILD_PROCESS;
if (!nsCRT::strcmp(aTopic, "profile-before-change")) {
// The profile is about to change,
// or is going away because the application is shutting down.
mIsShuttingDown = true;
if (!nsCRT::strcmp(someData, MOZ_UTF16("shutdown-cleanse"))) {
// Clear the permissions file and close the db asynchronously
RemoveAllInternal(false);
} else {
RemoveAllFromMemory();
CloseDB(false);
}
}
else if (!nsCRT::strcmp(aTopic, "profile-do-change")) {
// the profile has already changed; init the db from the new location
InitDB(false);
}
return NS_OK;
}
PLDHashOperator
nsPermissionManager::GetPermissionsForApp(nsPermissionManager::PermissionHashKey* entry, void* arg)
{
GetPermissionsForAppStruct* data = static_cast<GetPermissionsForAppStruct*>(arg);
for (uint32_t i = 0; i < entry->GetPermissions().Length(); ++i) {
nsPermissionManager::PermissionEntry& permEntry = entry->GetPermissions()[i];
if (entry->GetKey()->mAppId != data->appId ||
(data->browserOnly && !entry->GetKey()->mIsInBrowserElement)) {
continue;
}
data->permissions.AppendObject(new nsPermission(entry->GetKey()->mHost,
entry->GetKey()->mAppId,
entry->GetKey()->mIsInBrowserElement,
gPermissionManager->mTypeArray.ElementAt(permEntry.mType),
permEntry.mPermission,
permEntry.mExpireType,
permEntry.mExpireTime));
}
return PL_DHASH_NEXT;
}
NS_IMETHODIMP
nsPermissionManager::RemovePermissionsForApp(uint32_t aAppId, bool aBrowserOnly)
{
ENSURE_NOT_CHILD_PROCESS;
NS_ENSURE_ARG(aAppId != nsIScriptSecurityManager::NO_APP_ID);
// We begin by removing all the permissions from the DB.
// After clearing the DB, we call AddInternal() to make sure that all
// processes are aware of this change and the representation of the DB in
// memory is updated.
// We have to get all permissions associated with an application and then
// remove those because doing so in EnumerateEntries() would fail because
// we might happen to actually delete entries from the list.
nsAutoCString sql;
sql.AppendLiteral("DELETE FROM moz_hosts WHERE appId=");
sql.AppendInt(aAppId);
if (aBrowserOnly) {
sql.AppendLiteral(" AND isInBrowserElement=1");
}
nsCOMPtr<mozIStorageAsyncStatement> removeStmt;
nsresult rv = mDBConn->CreateAsyncStatement(sql, getter_AddRefs(removeStmt));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<mozIStoragePendingStatement> pending;
rv = removeStmt->ExecuteAsync(nullptr, getter_AddRefs(pending));
NS_ENSURE_SUCCESS(rv, rv);
GetPermissionsForAppStruct data(aAppId, aBrowserOnly);
mPermissionTable.EnumerateEntries(GetPermissionsForApp, &data);
for (int32_t i=0; i<data.permissions.Count(); ++i) {
nsAutoCString host;
bool isInBrowserElement;
nsAutoCString type;
data.permissions[i]->GetHost(host);
data.permissions[i]->GetIsInBrowserElement(&isInBrowserElement);
data.permissions[i]->GetType(type);
nsCOMPtr<nsIPrincipal> principal;
if (NS_FAILED(GetPrincipal(host, aAppId, isInBrowserElement,
getter_AddRefs(principal)))) {
NS_ERROR("GetPrincipal() failed!");
continue;
}
AddInternal(principal,
type,
nsIPermissionManager::UNKNOWN_ACTION,
0,
nsIPermissionManager::EXPIRE_NEVER,
0,
nsPermissionManager::eNotify,
nsPermissionManager::eNoDBOperation);
}
return NS_OK;
}
PLDHashOperator
nsPermissionManager::RemoveExpiredPermissionsForAppEnumerator(
nsPermissionManager::PermissionHashKey* entry, void* arg)
{
uint32_t* appId = static_cast<uint32_t*>(arg);
for (uint32_t i = 0; i < entry->GetPermissions().Length(); ++i) {
if (entry->GetKey()->mAppId != *appId) {
continue;
}
nsPermissionManager::PermissionEntry& permEntry = entry->GetPermissions()[i];
if (permEntry.mExpireType != nsIPermissionManager::EXPIRE_SESSION) {
continue;
}
if (permEntry.mNonSessionExpireType == nsIPermissionManager::EXPIRE_SESSION) {
PermissionEntry oldPermissionEntry = entry->GetPermissions()[i];
entry->GetPermissions().RemoveElementAt(i);
gPermissionManager->NotifyObserversWithPermission(entry->GetKey()->mHost,
entry->GetKey()->mAppId,
entry->GetKey()->mIsInBrowserElement,
gPermissionManager->mTypeArray.ElementAt(oldPermissionEntry.mType),
oldPermissionEntry.mPermission,
oldPermissionEntry.mExpireType,
oldPermissionEntry.mExpireTime,
MOZ_UTF16("deleted"));
--i;
continue;
}
permEntry.mPermission = permEntry.mNonSessionPermission;
permEntry.mExpireType = permEntry.mNonSessionExpireType;
permEntry.mExpireTime = permEntry.mNonSessionExpireTime;
gPermissionManager->NotifyObserversWithPermission(entry->GetKey()->mHost,
entry->GetKey()->mAppId,
entry->GetKey()->mIsInBrowserElement,
gPermissionManager->mTypeArray.ElementAt(permEntry.mType),
permEntry.mPermission,
permEntry.mExpireType,
permEntry.mExpireTime,
MOZ_UTF16("changed"));
}
return PL_DHASH_NEXT;
}
nsresult
nsPermissionManager::RemoveExpiredPermissionsForApp(uint32_t aAppId)
{
ENSURE_NOT_CHILD_PROCESS;
if (aAppId != nsIScriptSecurityManager::NO_APP_ID) {
mPermissionTable.EnumerateEntries(RemoveExpiredPermissionsForAppEnumerator, &aAppId);
}
return NS_OK;
}
//*****************************************************************************
//*** nsPermissionManager private methods
//*****************************************************************************
nsresult
nsPermissionManager::RemoveAllFromMemory()
{
mLargestID = 0;
mTypeArray.Clear();
mPermissionTable.Clear();
return NS_OK;
}
// Returns -1 on failure
int32_t
nsPermissionManager::GetTypeIndex(const char *aType,
bool aAdd)
{
for (uint32_t i = 0; i < mTypeArray.Length(); ++i)
if (mTypeArray[i].Equals(aType))
return i;
if (!aAdd) {
// Not found, but that is ok - we were just looking.
return -1;
}
// This type was not registered before.
// append it to the array, without copy-constructing the string
nsCString *elem = mTypeArray.AppendElement();
if (!elem)
return -1;
elem->Assign(aType);
return mTypeArray.Length() - 1;
}
// wrapper function for mangling (host,type,perm,expireType,expireTime)
// set into an nsIPermission.
void
nsPermissionManager::NotifyObserversWithPermission(const nsACString &aHost,
uint32_t aAppId,
bool aIsInBrowserElement,
const nsCString &aType,
uint32_t aPermission,
uint32_t aExpireType,
int64_t aExpireTime,
const char16_t *aData)
{
nsCOMPtr<nsIPermission> permission =
new nsPermission(aHost, aAppId, aIsInBrowserElement, aType, aPermission,
aExpireType, aExpireTime);
if (permission)
NotifyObservers(permission, aData);
}
// notify observers that the permission list changed. there are four possible
// values for aData:
// "deleted" means a permission was deleted. aPermission is the deleted permission.
// "added" means a permission was added. aPermission is the added permission.
// "changed" means a permission was altered. aPermission is the new permission.
// "cleared" means the entire permission list was cleared. aPermission is null.
void
nsPermissionManager::NotifyObservers(nsIPermission *aPermission,
const char16_t *aData)
{
if (mObserverService)
mObserverService->NotifyObservers(aPermission,
kPermissionChangeNotification,
aData);
}
nsresult
nsPermissionManager::Read()
{
ENSURE_NOT_CHILD_PROCESS;
nsresult rv;
// delete expired permissions before we read in the db
{
// this deletion has its own scope so the write lock is released when done.
nsCOMPtr<mozIStorageStatement> stmtDeleteExpired;
rv = mDBConn->CreateStatement(NS_LITERAL_CSTRING(
"DELETE FROM moz_hosts WHERE expireType = ?1 AND expireTime <= ?2"),
getter_AddRefs(stmtDeleteExpired));
NS_ENSURE_SUCCESS(rv, rv);
rv = stmtDeleteExpired->BindInt32ByIndex(0, nsIPermissionManager::EXPIRE_TIME);
NS_ENSURE_SUCCESS(rv, rv);
rv = stmtDeleteExpired->BindInt64ByIndex(1, PR_Now() / 1000);
NS_ENSURE_SUCCESS(rv, rv);
bool hasResult;
rv = stmtDeleteExpired->ExecuteStep(&hasResult);
NS_ENSURE_SUCCESS(rv, rv);
}
nsCOMPtr<mozIStorageStatement> stmt;
rv = mDBConn->CreateStatement(NS_LITERAL_CSTRING(
"SELECT id, host, type, permission, expireType, expireTime, appId, isInBrowserElement "
"FROM moz_hosts"), getter_AddRefs(stmt));
NS_ENSURE_SUCCESS(rv, rv);
int64_t id;
nsAutoCString host, type;
uint32_t permission;
uint32_t expireType;
int64_t expireTime;
uint32_t appId;
bool isInBrowserElement;
bool hasResult;
bool readError = false;
while (NS_SUCCEEDED(stmt->ExecuteStep(&hasResult)) && hasResult) {
// explicitly set our entry id counter for use in AddInternal(),
// and keep track of the largest id so we know where to pick up.
id = stmt->AsInt64(0);
if (id > mLargestID)
mLargestID = id;
rv = stmt->GetUTF8String(1, host);
if (NS_FAILED(rv)) {
readError = true;
continue;
}
rv = stmt->GetUTF8String(2, type);
if (NS_FAILED(rv)) {
readError = true;
continue;
}
permission = stmt->AsInt32(3);
expireType = stmt->AsInt32(4);
// convert into int64_t value (milliseconds)
expireTime = stmt->AsInt64(5);
if (stmt->AsInt64(6) < 0) {
readError = true;
continue;
}
appId = static_cast<uint32_t>(stmt->AsInt64(6));
isInBrowserElement = static_cast<bool>(stmt->AsInt32(7));
nsCOMPtr<nsIPrincipal> principal;
nsresult rv = GetPrincipal(host, appId, isInBrowserElement, getter_AddRefs(principal));
if (NS_FAILED(rv)) {
readError = true;
continue;
}
rv = AddInternal(principal, type, permission, id, expireType, expireTime,
eDontNotify, eNoDBOperation);
if (NS_FAILED(rv)) {
readError = true;
continue;
}
}
if (readError) {
NS_ERROR("Error occured while reading the permissions database!");
return NS_ERROR_FAILURE;
}
return NS_OK;
}
static const char kMatchTypeHost[] = "host";
nsresult
nsPermissionManager::Import()
{
ENSURE_NOT_CHILD_PROCESS;
nsresult rv;
nsCOMPtr<nsIFile> permissionsFile;
rv = NS_GetSpecialDirectory(NS_APP_USER_PROFILE_50_DIR, getter_AddRefs(permissionsFile));
if (NS_FAILED(rv)) return rv;
rv = permissionsFile->AppendNative(NS_LITERAL_CSTRING(kHostpermFileName));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIInputStream> fileInputStream;
rv = NS_NewLocalFileInputStream(getter_AddRefs(fileInputStream),
permissionsFile);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsILineInputStream> lineInputStream = do_QueryInterface(fileInputStream, &rv);
NS_ENSURE_SUCCESS(rv, rv);
// start a transaction on the storage db, to optimize insertions.
// transaction will automically commit on completion
mozStorageTransaction transaction(mDBConn, true);
/* format is:
* matchtype \t type \t permission \t host
* Only "host" is supported for matchtype
* type is a string that identifies the type of permission (e.g. "cookie")
* permission is an integer between 1 and 15
*/
nsAutoCString buffer;
bool isMore = true;
while (isMore && NS_SUCCEEDED(lineInputStream->ReadLine(buffer, &isMore))) {
if (buffer.IsEmpty() || buffer.First() == '#') {
continue;
}
nsTArray<nsCString> lineArray;
// Split the line at tabs
ParseString(buffer, '\t', lineArray);
if (lineArray[0].EqualsLiteral(kMatchTypeHost) &&
lineArray.Length() == 4) {
nsresult error;
uint32_t permission = lineArray[2].ToInteger(&error);
if (NS_FAILED(error))
continue;
// hosts might be encoded in UTF8; switch them to ACE to be consistent
if (!IsASCII(lineArray[3])) {
rv = NormalizeToACE(lineArray[3]);
if (NS_FAILED(rv))
continue;
}
nsCOMPtr<nsIPrincipal> principal;
nsresult rv = GetPrincipal(lineArray[3], getter_AddRefs(principal));
NS_ENSURE_SUCCESS(rv, rv);
rv = AddInternal(principal, lineArray[1], permission, 0,
nsIPermissionManager::EXPIRE_NEVER, 0, eDontNotify, eWriteToDB);
NS_ENSURE_SUCCESS(rv, rv);
}
}
// we're done importing - delete the old file
permissionsFile->Remove(false);
return NS_OK;
}
nsresult
nsPermissionManager::NormalizeToACE(nsCString &aHost)
{
// lazily init the IDN service
if (!mIDNService) {
nsresult rv;
mIDNService = do_GetService(NS_IDNSERVICE_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
}
return mIDNService->ConvertUTF8toACE(aHost, aHost);
}
void
nsPermissionManager::UpdateDB(OperationType aOp,
mozIStorageAsyncStatement* aStmt,
int64_t aID,
const nsACString &aHost,
const nsACString &aType,
uint32_t aPermission,
uint32_t aExpireType,
int64_t aExpireTime,
uint32_t aAppId,
bool aIsInBrowserElement)
{
ENSURE_NOT_CHILD_PROCESS_NORET;
nsresult rv;
// no statement is ok - just means we don't have a profile
if (!aStmt)
return;
switch (aOp) {
case eOperationAdding:
{
rv = aStmt->BindInt64ByIndex(0, aID);
if (NS_FAILED(rv)) break;
rv = aStmt->BindUTF8StringByIndex(1, aHost);
if (NS_FAILED(rv)) break;
rv = aStmt->BindUTF8StringByIndex(2, aType);
if (NS_FAILED(rv)) break;
rv = aStmt->BindInt32ByIndex(3, aPermission);
if (NS_FAILED(rv)) break;
rv = aStmt->BindInt32ByIndex(4, aExpireType);
if (NS_FAILED(rv)) break;
rv = aStmt->BindInt64ByIndex(5, aExpireTime);
if (NS_FAILED(rv)) break;
rv = aStmt->BindInt64ByIndex(6, aAppId);
if (NS_FAILED(rv)) break;
rv = aStmt->BindInt64ByIndex(7, aIsInBrowserElement);
break;
}
case eOperationRemoving:
{
rv = aStmt->BindInt64ByIndex(0, aID);
break;
}
case eOperationChanging:
{
rv = aStmt->BindInt64ByIndex(0, aID);
if (NS_FAILED(rv)) break;
rv = aStmt->BindInt32ByIndex(1, aPermission);
if (NS_FAILED(rv)) break;
rv = aStmt->BindInt32ByIndex(2, aExpireType);
if (NS_FAILED(rv)) break;
rv = aStmt->BindInt64ByIndex(3, aExpireTime);
break;
}
default:
{
NS_NOTREACHED("need a valid operation in UpdateDB()!");
rv = NS_ERROR_UNEXPECTED;
break;
}
}
if (NS_FAILED(rv)) {
NS_WARNING("db change failed!");
return;
}
nsCOMPtr<mozIStoragePendingStatement> pending;
rv = aStmt->ExecuteAsync(nullptr, getter_AddRefs(pending));
MOZ_ASSERT(NS_SUCCEEDED(rv));
}
NS_IMETHODIMP
nsPermissionManager::AddrefAppId(uint32_t aAppId)
{
if (aAppId == nsIScriptSecurityManager::NO_APP_ID) {
return NS_OK;
}
bool found = false;
for (uint32_t i = 0; i < mAppIdRefcounts.Length(); ++i) {
if (mAppIdRefcounts[i].mAppId == aAppId) {
++mAppIdRefcounts[i].mCounter;
found = true;
break;
}
}
if (!found) {
ApplicationCounter app = { aAppId, 1 };
mAppIdRefcounts.AppendElement(app);
}
return NS_OK;
}
NS_IMETHODIMP
nsPermissionManager::ReleaseAppId(uint32_t aAppId)
{
// An app has been released, maybe we have to reset its session.
if (aAppId == nsIScriptSecurityManager::NO_APP_ID) {
return NS_OK;
}
for (uint32_t i = 0; i < mAppIdRefcounts.Length(); ++i) {
if (mAppIdRefcounts[i].mAppId == aAppId) {
--mAppIdRefcounts[i].mCounter;
if (!mAppIdRefcounts[i].mCounter) {
mAppIdRefcounts.RemoveElementAt(i);
return RemoveExpiredPermissionsForApp(aAppId);
}
break;
}
}
return NS_OK;
}
NS_IMETHODIMP
nsPermissionManager::UpdateExpireTime(nsIPrincipal* aPrincipal,
const char* aType,
bool aExactHostMatch,
uint64_t aSessionExpireTime,
uint64_t aPersistentExpireTime)
{
NS_ENSURE_ARG_POINTER(aPrincipal);
NS_ENSURE_ARG_POINTER(aType);
uint64_t nowms = PR_Now() / 1000;
if (aSessionExpireTime < nowms || aPersistentExpireTime < nowms) {
return NS_ERROR_INVALID_ARG;
}
if (nsContentUtils::IsSystemPrincipal(aPrincipal)) {
return NS_OK;
}
// Setting the expire time of an nsEP is non-sensical.
if (IsExpandedPrincipal(aPrincipal)) {
return NS_ERROR_INVALID_ARG;
}
nsAutoCString host;
nsresult rv = GetHostForPrincipal(aPrincipal, host);
NS_ENSURE_SUCCESS(rv, rv);
int32_t typeIndex = GetTypeIndex(aType, false);
// If type == -1, the type isn't known,
// so just return NS_OK
if (typeIndex == -1) return NS_OK;
uint32_t appId;
rv = aPrincipal->GetAppId(&appId);
NS_ENSURE_SUCCESS(rv, rv);
bool isInBrowserElement;
rv = aPrincipal->GetIsInBrowserElement(&isInBrowserElement);
NS_ENSURE_SUCCESS(rv, rv);
PermissionHashKey* entry = GetPermissionHashKey(host, appId, isInBrowserElement,
typeIndex, aExactHostMatch);
if (!entry) {
return NS_OK;
}
int32_t idx = entry->GetPermissionIndex(typeIndex);
if (-1 == idx) {
return NS_OK;
}
PermissionEntry& perm = entry->GetPermissions()[idx];
if (perm.mExpireType == EXPIRE_TIME) {
perm.mExpireTime = aPersistentExpireTime;
} else if (perm.mExpireType == EXPIRE_SESSION && perm.mExpireTime != 0) {
perm.mExpireTime = aSessionExpireTime;
}
return NS_OK;
}
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