| /* |
| * Copyright (C) 2020 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #import "config.h" |
| #import "LaunchServicesDatabaseObserver.h" |
| |
| #import "LaunchServicesDatabaseXPCConstants.h" |
| #import <pal/spi/cocoa/LaunchServicesSPI.h> |
| #import <wtf/cocoa/Entitlements.h> |
| #import <wtf/spi/cocoa/SecuritySPI.h> |
| |
| namespace WebKit { |
| |
| #if HAVE(LSDATABASECONTEXT) |
| static LSDatabaseContext *databaseContext() |
| { |
| static dispatch_once_t once; |
| static LSDatabaseContext *context = nullptr; |
| dispatch_once(&once, ^{ |
| context = [NSClassFromString(@"LSDatabaseContext") sharedDatabaseContext]; |
| }); |
| return context; |
| } |
| #endif |
| |
| LaunchServicesDatabaseObserver::LaunchServicesDatabaseObserver(NetworkProcess&) |
| { |
| #if HAVE(LSDATABASECONTEXT) |
| if (![databaseContext() respondsToSelector:@selector(addDatabaseChangeObserver4WebKit:)]) |
| return; |
| |
| m_observer = [databaseContext() addDatabaseChangeObserver4WebKit:^(xpc_object_t change) { |
| auto message = adoptOSObject(xpc_dictionary_create(nullptr, nullptr, 0)); |
| xpc_dictionary_set_string(message.get(), XPCEndpoint::xpcMessageNameKey, LaunchServicesDatabaseXPCConstants::xpcUpdateLaunchServicesDatabaseMessageName); |
| xpc_dictionary_set_value(message.get(), LaunchServicesDatabaseXPCConstants::xpcLaunchServicesDatabaseKey, change); |
| |
| Locker locker { m_connectionsLock }; |
| for (auto& connection : m_connections) { |
| RELEASE_ASSERT(xpc_get_type(connection.get()) == XPC_TYPE_CONNECTION); |
| xpc_connection_send_message(connection.get(), message.get()); |
| } |
| }]; |
| #endif |
| } |
| |
| const char* LaunchServicesDatabaseObserver::supplementName() |
| { |
| return "LaunchServicesDatabaseObserverSupplement"; |
| } |
| |
| void LaunchServicesDatabaseObserver::startObserving(OSObjectPtr<xpc_connection_t> connection) |
| { |
| { |
| Locker locker { m_connectionsLock }; |
| m_connections.append(connection); |
| } |
| |
| #if HAVE(LSDATABASECONTEXT) |
| if (![databaseContext() respondsToSelector:@selector(addDatabaseChangeObserver4WebKit:)]) { |
| auto message = adoptOSObject(xpc_dictionary_create(nullptr, nullptr, 0)); |
| xpc_dictionary_set_string(message.get(), XPCEndpoint::xpcMessageNameKey, LaunchServicesDatabaseXPCConstants::xpcUpdateLaunchServicesDatabaseMessageName); |
| xpc_connection_send_message(connection.get(), message.get()); |
| return; |
| } |
| |
| RetainPtr<id> observer = [databaseContext() addDatabaseChangeObserver4WebKit:^(xpc_object_t change) { |
| auto message = adoptOSObject(xpc_dictionary_create(nullptr, nullptr, 0)); |
| xpc_dictionary_set_string(message.get(), XPCEndpoint::xpcMessageNameKey, LaunchServicesDatabaseXPCConstants::xpcUpdateLaunchServicesDatabaseMessageName); |
| xpc_dictionary_set_value(message.get(), LaunchServicesDatabaseXPCConstants::xpcLaunchServicesDatabaseKey, change); |
| |
| xpc_connection_send_message(connection.get(), message.get()); |
| }]; |
| |
| [databaseContext() removeDatabaseChangeObserver4WebKit:observer.get()]; |
| #else |
| auto message = adoptOSObject(xpc_dictionary_create(nullptr, nullptr, 0)); |
| xpc_dictionary_set_string(message.get(), XPCEndpoint::xpcMessageNameKey, LaunchServicesDatabaseXPCConstants::xpcUpdateLaunchServicesDatabaseMessageName); |
| xpc_connection_send_message(connection.get(), message.get()); |
| #endif |
| } |
| |
| LaunchServicesDatabaseObserver::~LaunchServicesDatabaseObserver() |
| { |
| #if HAVE(LSDATABASECONTEXT) |
| if (![databaseContext() respondsToSelector:@selector(removeDatabaseChangeObserver4WebKit:)]) |
| return; |
| |
| [databaseContext() removeDatabaseChangeObserver4WebKit:m_observer.get()]; |
| #endif |
| } |
| |
| const char* LaunchServicesDatabaseObserver::xpcEndpointMessageNameKey() const |
| { |
| return xpcMessageNameKey; |
| } |
| |
| const char* LaunchServicesDatabaseObserver::xpcEndpointMessageName() const |
| { |
| return LaunchServicesDatabaseXPCConstants::xpcLaunchServicesDatabaseXPCEndpointMessageName; |
| } |
| |
| const char* LaunchServicesDatabaseObserver::xpcEndpointNameKey() const |
| { |
| return LaunchServicesDatabaseXPCConstants::xpcLaunchServicesDatabaseXPCEndpointNameKey; |
| } |
| |
| void LaunchServicesDatabaseObserver::handleEvent(xpc_connection_t connection, xpc_object_t event) |
| { |
| if (xpc_get_type(event) == XPC_TYPE_ERROR) { |
| if (event != XPC_ERROR_CONNECTION_INVALID && event != XPC_ERROR_TERMINATION_IMMINENT) |
| return; |
| |
| Locker locker { m_connectionsLock }; |
| for (size_t i = 0; i < m_connections.size(); i++) { |
| if (m_connections[i].get() == connection) { |
| m_connections.remove(i); |
| break; |
| } |
| } |
| return; |
| } |
| if (xpc_get_type(event) == XPC_TYPE_DICTIONARY) { |
| String messageName = xpc_dictionary_get_string(event, xpcMessageNameKey); |
| if (messageName != LaunchServicesDatabaseXPCConstants::xpcRequestLaunchServicesDatabaseUpdateMessageName) |
| return; |
| startObserving(connection); |
| } |
| } |
| |
| void LaunchServicesDatabaseObserver::initializeConnection(IPC::Connection* connection) |
| { |
| sendEndpointToConnection(connection->xpcConnection()); |
| } |
| |
| } |