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gecko/dom/indexedDB/IDBFactory.cpp

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Indexed Database.
*
* The Initial Developer of the Original Code is
* The Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Ben Turner <bent.mozilla@gmail.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "IDBFactory.h"
#include "nsILocalFile.h"
#include "nsIScriptContext.h"
#include "mozilla/storage.h"
#include "nsAppDirectoryServiceDefs.h"
#include "nsComponentManagerUtils.h"
#include "nsContentUtils.h"
#include "nsDirectoryServiceUtils.h"
#include "nsDOMClassInfo.h"
#include "nsEscape.h"
#include "nsHashKeys.h"
#include "nsPIDOMWindow.h"
#include "nsServiceManagerUtils.h"
#include "nsThreadUtils.h"
#include "nsXPCOMCID.h"
#include "AsyncConnectionHelper.h"
#include "CheckPermissionsHelper.h"
#include "DatabaseInfo.h"
#include "IDBDatabase.h"
#include "IDBKeyRange.h"
#include "IndexedDatabaseManager.h"
#include "LazyIdleThread.h"
#define PREF_INDEXEDDB_QUOTA "dom.indexedDB.warningQuota"
// megabytes
#define DEFAULT_QUOTA 50
#define BAD_TLS_INDEX (PRUintn)-1
#define DB_SCHEMA_VERSION 3
USING_INDEXEDDB_NAMESPACE
namespace {
PRUintn gCurrentDatabaseIndex = BAD_TLS_INDEX;
PRInt32 gIndexedDBQuota = DEFAULT_QUOTA;
class QuotaCallback : public mozIStorageQuotaCallback
{
public:
NS_DECL_ISUPPORTS
NS_IMETHOD
QuotaExceeded(const nsACString& aFilename,
PRInt64 aCurrentSizeLimit,
PRInt64 aCurrentTotalSize,
nsISupports* aUserData,
PRInt64* _retval)
{
NS_ASSERTION(gCurrentDatabaseIndex != BAD_TLS_INDEX,
"This should be impossible!");
IDBDatabase* database =
static_cast<IDBDatabase*>(PR_GetThreadPrivate(gCurrentDatabaseIndex));
if (database && database->IsQuotaDisabled()) {
*_retval = 0;
return NS_OK;
}
return NS_ERROR_FAILURE;
}
};
NS_IMPL_THREADSAFE_ISUPPORTS1(QuotaCallback, mozIStorageQuotaCallback)
const PRUint32 kDefaultThreadTimeoutMS = 30000;
struct ObjectStoreInfoMap
{
ObjectStoreInfoMap()
: id(LL_MININT), info(nsnull) { }
PRInt64 id;
ObjectStoreInfo* info;
};
class OpenDatabaseHelper : public AsyncConnectionHelper
{
public:
OpenDatabaseHelper(IDBRequest* aRequest,
const nsAString& aName,
const nsACString& aASCIIOrigin)
: AsyncConnectionHelper(static_cast<IDBDatabase*>(nsnull), aRequest),
mName(aName), mASCIIOrigin(aASCIIOrigin), mDatabaseId(0),
mLastObjectStoreId(0), mLastIndexId(0)
{ }
nsresult DoDatabaseWork(mozIStorageConnection* aConnection);
nsresult GetSuccessResult(nsIWritableVariant* aResult);
private:
// In-params.
nsString mName;
nsCString mASCIIOrigin;
// Out-params.
nsTArray<nsAutoPtr<ObjectStoreInfo> > mObjectStores;
nsString mVersion;
nsString mDatabaseFilePath;
PRUint32 mDatabaseId;
PRInt64 mLastObjectStoreId;
PRInt64 mLastIndexId;
};
nsresult
CreateTables(mozIStorageConnection* aDBConn)
{
NS_PRECONDITION(!NS_IsMainThread(),
"Creating tables on the main thread!");
NS_PRECONDITION(aDBConn, "Passing a null database connection!");
// Table `database`
nsresult rv = aDBConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
"CREATE TABLE database ("
"name TEXT NOT NULL, "
"version TEXT DEFAULT NULL"
");"
));
NS_ENSURE_SUCCESS(rv, rv);
// Table `object_store`
rv = aDBConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
"CREATE TABLE object_store ("
"id INTEGER, "
"name TEXT NOT NULL, "
"key_path TEXT NOT NULL, "
"auto_increment INTEGER NOT NULL DEFAULT 0, "
"PRIMARY KEY (id), "
"UNIQUE (name)"
");"
));
NS_ENSURE_SUCCESS(rv, rv);
// Table `object_data`
rv = aDBConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
"CREATE TABLE object_data ("
"id INTEGER, "
"object_store_id INTEGER NOT NULL, "
"data TEXT NOT NULL, "
"key_value DEFAULT NULL, " // NONE affinity
"PRIMARY KEY (id), "
"FOREIGN KEY (object_store_id) REFERENCES object_store(id) ON DELETE "
"CASCADE"
");"
));
NS_ENSURE_SUCCESS(rv, rv);
rv = aDBConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
"CREATE UNIQUE INDEX key_index "
"ON object_data (key_value, object_store_id);"
));
NS_ENSURE_SUCCESS(rv, rv);
// Table `ai_object_data`
rv = aDBConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
"CREATE TABLE ai_object_data ("
"id INTEGER PRIMARY KEY AUTOINCREMENT, "
"object_store_id INTEGER NOT NULL, "
"data TEXT NOT NULL, "
"FOREIGN KEY (object_store_id) REFERENCES object_store(id) ON DELETE "
"CASCADE"
");"
));
NS_ENSURE_SUCCESS(rv, rv);
rv = aDBConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
"CREATE UNIQUE INDEX ai_key_index "
"ON ai_object_data (id, object_store_id);"
));
NS_ENSURE_SUCCESS(rv, rv);
// Table `index`
rv = aDBConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
"CREATE TABLE object_store_index ("
"id INTEGER, "
"object_store_id INTEGER NOT NULL, "
"name TEXT NOT NULL, "
"key_path TEXT NOT NULL, "
"unique_index INTEGER NOT NULL, "
"object_store_autoincrement INTERGER NOT NULL, "
"PRIMARY KEY (id), "
"UNIQUE (object_store_id, name), "
"FOREIGN KEY (object_store_id) REFERENCES object_store(id) ON DELETE "
"CASCADE"
");"
));
NS_ENSURE_SUCCESS(rv, rv);
// Table `index_data`
rv = aDBConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
"CREATE TABLE index_data ("
"id INTEGER, "
"index_id INTEGER NOT NULL, "
"object_data_id INTEGER NOT NULL, "
"object_data_key NOT NULL, " // NONE affinity
"value NOT NULL, "
"PRIMARY KEY (id), "
"FOREIGN KEY (index_id) REFERENCES object_store_index(id) ON DELETE "
"CASCADE, "
"FOREIGN KEY (object_data_id) REFERENCES object_data(id) ON DELETE "
"CASCADE"
");"
));
NS_ENSURE_SUCCESS(rv, rv);
rv = aDBConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
"CREATE INDEX value_index "
"ON index_data (index_id, value);"
));
NS_ENSURE_SUCCESS(rv, rv);
// Table `unique_index_data`
rv = aDBConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
"CREATE TABLE unique_index_data ("
"id INTEGER, "
"index_id INTEGER NOT NULL, "
"object_data_id INTEGER NOT NULL, "
"object_data_key NOT NULL, " // NONE affinity
"value NOT NULL, "
"PRIMARY KEY (id), "
"UNIQUE (index_id, value), "
"FOREIGN KEY (index_id) REFERENCES object_store_index(id) ON DELETE "
"CASCADE "
"FOREIGN KEY (object_data_id) REFERENCES object_data(id) ON DELETE "
"CASCADE"
");"
));
NS_ENSURE_SUCCESS(rv, rv);
// Table `ai_index_data`
rv = aDBConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
"CREATE TABLE ai_index_data ("
"id INTEGER, "
"index_id INTEGER NOT NULL, "
"ai_object_data_id INTEGER NOT NULL, "
"value NOT NULL, "
"PRIMARY KEY (id), "
"FOREIGN KEY (index_id) REFERENCES object_store_index(id) ON DELETE "
"CASCADE, "
"FOREIGN KEY (ai_object_data_id) REFERENCES ai_object_data(id) ON DELETE "
"CASCADE"
");"
));
NS_ENSURE_SUCCESS(rv, rv);
rv = aDBConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
"CREATE INDEX ai_value_index "
"ON ai_index_data (index_id, value);"
));
NS_ENSURE_SUCCESS(rv, rv);
// Table `ai_unique_index_data`
rv = aDBConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
"CREATE TABLE ai_unique_index_data ("
"id INTEGER, "
"index_id INTEGER NOT NULL, "
"ai_object_data_id INTEGER NOT NULL, "
"value NOT NULL, "
"PRIMARY KEY (id), "
"UNIQUE (index_id, value), "
"FOREIGN KEY (index_id) REFERENCES object_store_index(id) ON DELETE "
"CASCADE, "
"FOREIGN KEY (ai_object_data_id) REFERENCES ai_object_data(id) ON DELETE "
"CASCADE"
");"
));
NS_ENSURE_SUCCESS(rv, rv);
rv = aDBConn->SetSchemaVersion(DB_SCHEMA_VERSION);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
nsresult
CreateMetaData(mozIStorageConnection* aConnection,
const nsAString& aName)
{
NS_PRECONDITION(!NS_IsMainThread(), "Wrong thread!");
NS_PRECONDITION(aConnection, "Null database!");
nsCOMPtr<mozIStorageStatement> stmt;
nsresult rv = aConnection->CreateStatement(NS_LITERAL_CSTRING(
"INSERT OR REPLACE INTO database (name) "
"VALUES (:name)"
), getter_AddRefs(stmt));
NS_ENSURE_SUCCESS(rv, rv);
rv = stmt->BindStringByName(NS_LITERAL_CSTRING("name"), aName);
NS_ENSURE_SUCCESS(rv, rv);
return stmt->Execute();
}
nsresult
CreateDatabaseConnection(const nsACString& aASCIIOrigin,
const nsAString& aName,
nsAString& aDatabaseFilePath,
mozIStorageConnection** aConnection)
{
NS_ASSERTION(!NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(!aASCIIOrigin.IsEmpty() && !aName.IsEmpty(), "Bad arguments!");
aDatabaseFilePath.Truncate();
nsCOMPtr<nsIFile> dbDirectory;
nsresult rv = NS_GetSpecialDirectory(NS_APP_USER_PROFILE_50_DIR,
getter_AddRefs(dbDirectory));
NS_ENSURE_SUCCESS(rv, rv);
rv = dbDirectory->Append(NS_LITERAL_STRING("indexedDB"));
NS_ENSURE_SUCCESS(rv, rv);
PRBool exists;
rv = dbDirectory->Exists(&exists);
NS_ENSURE_SUCCESS(rv, rv);
if (exists) {
PRBool isDirectory;
rv = dbDirectory->IsDirectory(&isDirectory);
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(isDirectory, NS_ERROR_UNEXPECTED);
}
else {
rv = dbDirectory->Create(nsIFile::DIRECTORY_TYPE, 0755);
NS_ENSURE_SUCCESS(rv, rv);
}
NS_ConvertASCIItoUTF16 originSanitized(aASCIIOrigin);
originSanitized.ReplaceChar(":/", '+');
rv = dbDirectory->Append(originSanitized);
NS_ENSURE_SUCCESS(rv, rv);
rv = dbDirectory->Exists(&exists);
NS_ENSURE_SUCCESS(rv, rv);
if (exists) {
PRBool isDirectory;
rv = dbDirectory->IsDirectory(&isDirectory);
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(isDirectory, NS_ERROR_UNEXPECTED);
}
else {
rv = dbDirectory->Create(nsIFile::DIRECTORY_TYPE, 0755);
NS_ENSURE_SUCCESS(rv, rv);
}
nsCOMPtr<nsIFile> dbFile;
rv = dbDirectory->Clone(getter_AddRefs(dbFile));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<mozIStorageServiceQuotaManagement> ss =
do_GetService(MOZ_STORAGE_SERVICE_CONTRACTID);
NS_ENSURE_TRUE(ss, NS_ERROR_FAILURE);
rv = dbDirectory->Append(NS_LITERAL_STRING("*"));
NS_ENSURE_SUCCESS(rv, rv);
nsCString pattern;
rv = dbDirectory->GetNativePath(pattern);
NS_ENSURE_SUCCESS(rv, rv);
if (gIndexedDBQuota > 0) {
PRUint64 quota = PRUint64(gIndexedDBQuota) * 1024 * 1024;
nsRefPtr<QuotaCallback> callback(new QuotaCallback());
rv = ss->SetQuotaForFilenamePattern(pattern, quota, callback, nsnull);
NS_ENSURE_SUCCESS(rv, rv);
}
nsAutoString filename;
filename.AppendInt(HashString(aName));
nsCString escapedName;
if (!NS_Escape(NS_ConvertUTF16toUTF8(aName), escapedName, url_XPAlphas)) {
NS_WARNING("Can't escape database name!");
return NS_ERROR_UNEXPECTED;
}
const char* forwardIter = escapedName.BeginReading();
const char* backwardIter = escapedName.EndReading() - 1;
nsCString substring;
while (forwardIter <= backwardIter && substring.Length() < 21) {
if (substring.Length() % 2) {
substring.Append(*backwardIter--);
}
else {
substring.Append(*forwardIter++);
}
}
filename.Append(NS_ConvertASCIItoUTF16(substring));
filename.AppendLiteral(".sqlite");
rv = dbFile->Append(filename);
NS_ENSURE_SUCCESS(rv, rv);
rv = dbFile->Exists(&exists);
NS_ENSURE_SUCCESS(rv, rv);
NS_NAMED_LITERAL_CSTRING(quota, "quota");
nsCOMPtr<mozIStorageConnection> connection;
rv = ss->OpenDatabaseWithVFS(dbFile, quota, getter_AddRefs(connection));
if (rv == NS_ERROR_FILE_CORRUPTED) {
// Nuke the database file. The web services can recreate their data.
rv = dbFile->Remove(PR_FALSE);
NS_ENSURE_SUCCESS(rv, rv);
exists = PR_FALSE;
rv = ss->OpenDatabaseWithVFS(dbFile, quota, getter_AddRefs(connection));
}
NS_ENSURE_SUCCESS(rv, rv);
// Check to make sure that the database schema is correct.
PRInt32 schemaVersion;
rv = connection->GetSchemaVersion(&schemaVersion);
NS_ENSURE_SUCCESS(rv, rv);
if (schemaVersion != DB_SCHEMA_VERSION) {
if (exists) {
// If the connection is not at the right schema version, nuke it.
rv = dbFile->Remove(PR_FALSE);
NS_ENSURE_SUCCESS(rv, rv);
rv = ss->OpenDatabaseWithVFS(dbFile, quota, getter_AddRefs(connection));
NS_ENSURE_SUCCESS(rv, rv);
}
rv = CreateTables(connection);
NS_ENSURE_SUCCESS(rv, rv);
rv = CreateMetaData(connection, aName);
NS_ENSURE_SUCCESS(rv, rv);
}
// Check to make sure that the database schema is correct again.
NS_ASSERTION(NS_SUCCEEDED(connection->GetSchemaVersion(&schemaVersion)) &&
schemaVersion == DB_SCHEMA_VERSION,
"CreateTables failed!");
// Turn on foreign key constraints in debug builds to catch bugs!
rv = connection->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
"PRAGMA foreign_keys = ON;"
));
NS_ENSURE_SUCCESS(rv, rv);
rv = dbFile->GetPath(aDatabaseFilePath);
NS_ENSURE_SUCCESS(rv, rv);
connection.forget(aConnection);
return NS_OK;
}
} // anonyomous namespace
// static
already_AddRefed<nsIIDBFactory>
IDBFactory::Create()
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
nsCOMPtr<nsIIDBFactory> request(new IDBFactory());
return request.forget();
}
// static
already_AddRefed<mozIStorageConnection>
IDBFactory::GetConnection(const nsAString& aDatabaseFilePath)
{
NS_ASSERTION(StringEndsWith(aDatabaseFilePath, NS_LITERAL_STRING(".sqlite")),
"Bad file path!");
nsCOMPtr<nsILocalFile> dbFile(do_CreateInstance(NS_LOCAL_FILE_CONTRACTID));
NS_ENSURE_TRUE(dbFile, nsnull);
nsresult rv = dbFile->InitWithPath(aDatabaseFilePath);
NS_ENSURE_SUCCESS(rv, nsnull);
PRBool exists;
rv = dbFile->Exists(&exists);
NS_ENSURE_SUCCESS(rv, nsnull);
NS_ENSURE_TRUE(exists, nsnull);
nsCOMPtr<mozIStorageServiceQuotaManagement> ss =
do_GetService(MOZ_STORAGE_SERVICE_CONTRACTID);
NS_ENSURE_TRUE(ss, nsnull);
nsCOMPtr<mozIStorageConnection> connection;
rv = ss->OpenDatabaseWithVFS(dbFile, NS_LITERAL_CSTRING("quota"),
getter_AddRefs(connection));
NS_ENSURE_SUCCESS(rv, nsnull);
#ifdef DEBUG
{
// Check to make sure that the database schema is correct again.
PRInt32 schemaVersion;
NS_ASSERTION(NS_SUCCEEDED(connection->GetSchemaVersion(&schemaVersion)) &&
schemaVersion == DB_SCHEMA_VERSION,
"Wrong schema!");
}
#endif
// Turn on foreign key constraints in debug builds to catch bugs!
rv = connection->ExecuteSimpleSQL(NS_LITERAL_CSTRING(
"PRAGMA foreign_keys = ON;"
));
NS_ENSURE_SUCCESS(rv, nsnull);
return connection.forget();
}
// static
bool
IDBFactory::SetCurrentDatabase(IDBDatabase* aDatabase)
{
NS_ASSERTION(gCurrentDatabaseIndex != BAD_TLS_INDEX,
"This should have been set already!");
#ifdef DEBUG
if (aDatabase) {
NS_ASSERTION(!PR_GetThreadPrivate(gCurrentDatabaseIndex),
"Someone forgot to unset gCurrentDatabaseIndex!");
}
else {
NS_ASSERTION(PR_GetThreadPrivate(gCurrentDatabaseIndex),
"Someone forgot to set gCurrentDatabaseIndex!");
}
#endif
if (PR_SetThreadPrivate(gCurrentDatabaseIndex, aDatabase) != PR_SUCCESS) {
NS_WARNING("Failed to set gCurrentDatabaseIndex!");
return false;
}
return true;
}
// static
PRUint32
IDBFactory::GetIndexedDBQuota()
{
return PRUint32(PR_MAX(gIndexedDBQuota, 0));
}
// static
nsresult
IDBFactory::GetDirectoryForOrigin(const nsACString& aASCIIOrigin,
nsIFile** aDirectory)
{
nsCOMPtr<nsIFile> directory;
nsresult rv = NS_GetSpecialDirectory(NS_APP_USER_PROFILE_50_DIR,
getter_AddRefs(directory));
NS_ENSURE_SUCCESS(rv, rv);
rv = directory->Append(NS_LITERAL_STRING("indexedDB"));
NS_ENSURE_SUCCESS(rv, rv);
NS_ConvertASCIItoUTF16 originSanitized(aASCIIOrigin);
originSanitized.ReplaceChar(":/", '+');
rv = directory->Append(originSanitized);
NS_ENSURE_SUCCESS(rv, rv);
directory.forget(aDirectory);
return NS_OK;
}
// static
nsresult
IDBFactory::LoadDatabaseInformation(mozIStorageConnection* aConnection,
PRUint32 aDatabaseId,
nsAString& aVersion,
ObjectStoreInfoArray& aObjectStores)
{
NS_ASSERTION(!NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aConnection, "Null pointer!");
aVersion.Truncate();
aObjectStores.Clear();
// Load object store names and ids.
nsCOMPtr<mozIStorageStatement> stmt;
nsresult rv = aConnection->CreateStatement(NS_LITERAL_CSTRING(
"SELECT name, id, key_path, auto_increment "
"FROM object_store"
), getter_AddRefs(stmt));
NS_ENSURE_SUCCESS(rv, rv);
nsAutoTArray<ObjectStoreInfoMap, 20> infoMap;
PRBool hasResult;
while (NS_SUCCEEDED((rv = stmt->ExecuteStep(&hasResult))) && hasResult) {
nsAutoPtr<ObjectStoreInfo>* element =
aObjectStores.AppendElement(new ObjectStoreInfo());
NS_ENSURE_TRUE(element, NS_ERROR_OUT_OF_MEMORY);
ObjectStoreInfo* info = element->get();
rv = stmt->GetString(0, info->name);
NS_ENSURE_SUCCESS(rv, rv);
info->id = stmt->AsInt64(1);
rv = stmt->GetString(2, info->keyPath);
NS_ENSURE_SUCCESS(rv, rv);
info->autoIncrement = !!stmt->AsInt32(3);
info->databaseId = aDatabaseId;
ObjectStoreInfoMap* mapEntry = infoMap.AppendElement();
NS_ENSURE_TRUE(mapEntry, NS_ERROR_OUT_OF_MEMORY);
mapEntry->id = info->id;
mapEntry->info = info;
}
NS_ENSURE_SUCCESS(rv, rv);
// Load index information
rv = aConnection->CreateStatement(NS_LITERAL_CSTRING(
"SELECT object_store_id, id, name, key_path, unique_index, "
"object_store_autoincrement "
"FROM object_store_index"
), getter_AddRefs(stmt));
NS_ENSURE_SUCCESS(rv, rv);
while (NS_SUCCEEDED((rv = stmt->ExecuteStep(&hasResult))) && hasResult) {
PRInt64 objectStoreId = stmt->AsInt64(0);
ObjectStoreInfo* objectStoreInfo = nsnull;
for (PRUint32 index = 0; index < infoMap.Length(); index++) {
if (infoMap[index].id == objectStoreId) {
objectStoreInfo = infoMap[index].info;
break;
}
}
if (!objectStoreInfo) {
NS_ERROR("Index for nonexistant object store!");
return NS_ERROR_UNEXPECTED;
}
IndexInfo* indexInfo = objectStoreInfo->indexes.AppendElement();
NS_ENSURE_TRUE(indexInfo, NS_ERROR_OUT_OF_MEMORY);
indexInfo->id = stmt->AsInt64(1);
rv = stmt->GetString(2, indexInfo->name);
NS_ENSURE_SUCCESS(rv, rv);
rv = stmt->GetString(3, indexInfo->keyPath);
NS_ENSURE_SUCCESS(rv, rv);
indexInfo->unique = !!stmt->AsInt32(4);
indexInfo->autoIncrement = !!stmt->AsInt32(5);
}
NS_ENSURE_SUCCESS(rv, rv);
// Load version information.
rv = aConnection->CreateStatement(NS_LITERAL_CSTRING(
"SELECT version "
"FROM database"
), getter_AddRefs(stmt));
NS_ENSURE_SUCCESS(rv, rv);
rv = stmt->ExecuteStep(&hasResult);
NS_ENSURE_SUCCESS(rv, rv);
if (!hasResult) {
NS_ERROR("Database has no version!");
return NS_ERROR_UNEXPECTED;
}
nsString version;
rv = stmt->GetString(0, version);
NS_ENSURE_SUCCESS(rv, rv);
if (version.IsVoid()) {
version.SetIsVoid(PR_FALSE);
}
aVersion = version;
return NS_OK;
}
// static
nsresult
IDBFactory::UpdateDatabaseMetadata(DatabaseInfo* aDatabaseInfo,
const nsAString& aVersion,
ObjectStoreInfoArray& aObjectStores)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aDatabaseInfo, "Null pointer!");
ObjectStoreInfoArray objectStores;
if (!objectStores.SwapElements(aObjectStores)) {
NS_WARNING("Out of memory!");
return NS_ERROR_OUT_OF_MEMORY;
}
nsAutoTArray<nsString, 10> existingNames;
if (!aDatabaseInfo->GetObjectStoreNames(existingNames)) {
NS_WARNING("Out of memory!");
return NS_ERROR_OUT_OF_MEMORY;
}
// Remove all the old ones.
for (PRUint32 index = 0; index < existingNames.Length(); index++) {
ObjectStoreInfo::Remove(aDatabaseInfo->id, existingNames[index]);
}
aDatabaseInfo->version = aVersion;
for (PRUint32 index = 0; index < objectStores.Length(); index++) {
nsAutoPtr<ObjectStoreInfo>& info = objectStores[index];
NS_ASSERTION(info->databaseId == aDatabaseInfo->id, "Huh?!");
if (!ObjectStoreInfo::Put(info)) {
NS_WARNING("Out of memory!");
return NS_ERROR_OUT_OF_MEMORY;
}
info.forget();
}
return NS_OK;
}
NS_IMPL_ADDREF(IDBFactory)
NS_IMPL_RELEASE(IDBFactory)
NS_INTERFACE_MAP_BEGIN(IDBFactory)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_ENTRY(nsIIDBFactory)
NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(IDBFactory)
NS_INTERFACE_MAP_END
DOMCI_DATA(IDBFactory, IDBFactory)
NS_IMETHODIMP
IDBFactory::Open(const nsAString& aName,
JSContext* aCx,
nsIIDBRequest** _retval)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
nsresult rv;
if (gCurrentDatabaseIndex == BAD_TLS_INDEX) {
// First time we're creating a database.
if (PR_NewThreadPrivateIndex(&gCurrentDatabaseIndex, NULL) != PR_SUCCESS) {
NS_ERROR("PR_NewThreadPrivateIndex failed!");
gCurrentDatabaseIndex = BAD_TLS_INDEX;
return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
}
nsContentUtils::AddIntPrefVarCache(PREF_INDEXEDDB_QUOTA, &gIndexedDBQuota,
DEFAULT_QUOTA);
}
if (aName.IsEmpty()) {
return NS_ERROR_DOM_INDEXEDDB_NON_TRANSIENT_ERR;
}
nsCOMPtr<nsIPrincipal> principal;
rv = nsContentUtils::GetSecurityManager()->
GetSubjectPrincipal(getter_AddRefs(principal));
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
nsCString origin;
if (nsContentUtils::IsSystemPrincipal(principal)) {
origin.AssignLiteral("chrome");
}
else {
rv = nsContentUtils::GetASCIIOrigin(principal, origin);
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
if (origin.EqualsLiteral("null")) {
NS_WARNING("IndexedDB databases not allowed for this principal!");
return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
}
}
nsIScriptContext* context = GetScriptContextFromJSContext(aCx);
NS_ENSURE_TRUE(context, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
nsCOMPtr<nsPIDOMWindow> innerWindow;
nsCOMPtr<nsPIDOMWindow> window =
do_QueryInterface(context->GetGlobalObject());
if (window) {
innerWindow = window->GetCurrentInnerWindow();
}
NS_ENSURE_TRUE(innerWindow, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
nsRefPtr<IDBRequest> request = IDBRequest::Create(this, context, innerWindow,
nsnull);
NS_ENSURE_TRUE(request, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
nsRefPtr<OpenDatabaseHelper> openHelper =
new OpenDatabaseHelper(request, aName, origin);
nsRefPtr<CheckPermissionsHelper> permissionHelper =
new CheckPermissionsHelper(openHelper, innerWindow, aName, origin);
nsRefPtr<IndexedDatabaseManager> mgr = IndexedDatabaseManager::GetOrCreate();
NS_ENSURE_TRUE(mgr, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
rv = mgr->WaitForOpenAllowed(aName, origin, permissionHelper);
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
request.forget(_retval);
return NS_OK;
}
nsresult
OpenDatabaseHelper::DoDatabaseWork(mozIStorageConnection* aConnection)
{
#ifdef DEBUG
{
PRBool correctThread;
NS_ASSERTION(NS_SUCCEEDED(IndexedDatabaseManager::Get()->IOThread()->
IsOnCurrentThread(&correctThread)) &&
correctThread,
"Running on the wrong thread!");
}
#endif
NS_ASSERTION(!aConnection, "Huh?!");
if (IndexedDatabaseManager::IsShuttingDown()) {
return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
}
nsCOMPtr<mozIStorageConnection> connection;
nsresult rv = CreateDatabaseConnection(mASCIIOrigin, mName, mDatabaseFilePath,
getter_AddRefs(connection));
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
mDatabaseId = HashString(mDatabaseFilePath);
NS_ASSERTION(mDatabaseId, "HashString gave us 0?!");
rv = IDBFactory::LoadDatabaseInformation(connection, mDatabaseId, mVersion,
mObjectStores);
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
for (PRUint32 i = 0; i < mObjectStores.Length(); i++) {
nsAutoPtr<ObjectStoreInfo>& objectStoreInfo = mObjectStores[i];
for (PRUint32 j = 0; j < objectStoreInfo->indexes.Length(); j++) {
IndexInfo& indexInfo = objectStoreInfo->indexes[j];
mLastIndexId = PR_MAX(indexInfo.id, mLastIndexId);
}
mLastObjectStoreId = PR_MAX(objectStoreInfo->id, mLastObjectStoreId);
}
return NS_OK;
}
nsresult
OpenDatabaseHelper::GetSuccessResult(nsIWritableVariant* aResult)
{
DatabaseInfo* dbInfo;
if (DatabaseInfo::Get(mDatabaseId, &dbInfo)) {
NS_ASSERTION(dbInfo->referenceCount, "Bad reference count!");
++dbInfo->referenceCount;
#ifdef DEBUG
{
NS_ASSERTION(dbInfo->name == mName &&
dbInfo->version == mVersion &&
dbInfo->id == mDatabaseId &&
dbInfo->filePath == mDatabaseFilePath,
"Metadata mismatch!");
PRUint32 objectStoreCount = mObjectStores.Length();
for (PRUint32 index = 0; index < objectStoreCount; index++) {
nsAutoPtr<ObjectStoreInfo>& info = mObjectStores[index];
NS_ASSERTION(info->databaseId == mDatabaseId, "Huh?!");
ObjectStoreInfo* otherInfo;
NS_ASSERTION(ObjectStoreInfo::Get(mDatabaseId, info->name, &otherInfo),
"ObjectStore not known!");
NS_ASSERTION(info->name == otherInfo->name &&
info->id == otherInfo->id &&
info->keyPath == otherInfo->keyPath &&
info->autoIncrement == otherInfo->autoIncrement &&
info->databaseId == otherInfo->databaseId,
"Metadata mismatch!");
NS_ASSERTION(dbInfo->ContainsStoreName(info->name),
"Object store names out of date!");
NS_ASSERTION(info->indexes.Length() == otherInfo->indexes.Length(),
"Bad index length!");
PRUint32 indexCount = info->indexes.Length();
for (PRUint32 indexIndex = 0; indexIndex < indexCount; indexIndex++) {
const IndexInfo& indexInfo = info->indexes[indexIndex];
const IndexInfo& otherIndexInfo = otherInfo->indexes[indexIndex];
NS_ASSERTION(indexInfo.id == otherIndexInfo.id,
"Bad index id!");
NS_ASSERTION(indexInfo.name == otherIndexInfo.name,
"Bad index name!");
NS_ASSERTION(indexInfo.keyPath == otherIndexInfo.keyPath,
"Bad index keyPath!");
NS_ASSERTION(indexInfo.unique == otherIndexInfo.unique,
"Bad index unique value!");
NS_ASSERTION(indexInfo.autoIncrement == otherIndexInfo.autoIncrement,
"Bad index autoIncrement value!");
}
}
}
#endif
}
else {
nsAutoPtr<DatabaseInfo> newInfo(new DatabaseInfo());
newInfo->name = mName;
newInfo->id = mDatabaseId;
newInfo->filePath = mDatabaseFilePath;
newInfo->referenceCount = 1;
if (!DatabaseInfo::Put(newInfo)) {
NS_ERROR("Failed to add to hash!");
return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
}
dbInfo = newInfo.forget();
nsresult rv = IDBFactory::UpdateDatabaseMetadata(dbInfo, mVersion,
mObjectStores);
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
NS_ASSERTION(mObjectStores.IsEmpty(), "Should have swapped!");
}
dbInfo->nextObjectStoreId = mLastObjectStoreId + 1;
dbInfo->nextIndexId = mLastIndexId + 1;
nsRefPtr<IDBDatabase> db =
IDBDatabase::Create(mRequest->ScriptContext(), mRequest->Owner(), dbInfo,
mASCIIOrigin);
if (!db) {
return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
}
aResult->SetAsISupports(static_cast<nsPIDOMEventTarget*>(db));
return NS_OK;
}
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