1 /* 2 * Copyright 2019 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 19 #include <memory> 20 #include <unordered_map> 21 22 #include "hci/acl_manager/classic_acl_connection.h" 23 #include "hci/address.h" 24 #include "l2cap/classic/dynamic_channel_manager.h" 25 #include "l2cap/classic/fixed_channel_manager.h" 26 #include "l2cap/classic/internal/dynamic_channel_service_manager_impl.h" 27 #include "l2cap/classic/internal/fixed_channel_service_manager_impl.h" 28 #include "l2cap/classic/internal/link.h" 29 #include "l2cap/classic/link_security_interface.h" 30 #include "l2cap/internal/parameter_provider.h" 31 #include "l2cap/internal/scheduler.h" 32 #include "os/handler.h" 33 34 namespace bluetooth { 35 namespace l2cap { 36 namespace classic { 37 namespace internal { 38 39 class LinkManager : public hci::acl_manager::ConnectionCallbacks { 40 public: LinkManager(os::Handler * l2cap_handler,hci::AclManager * acl_manager,FixedChannelServiceManagerImpl * fixed_channel_service_manager,DynamicChannelServiceManagerImpl * dynamic_channel_service_manager,l2cap::internal::ParameterProvider * parameter_provider)41 LinkManager(os::Handler* l2cap_handler, hci::AclManager* acl_manager, 42 FixedChannelServiceManagerImpl* fixed_channel_service_manager, 43 DynamicChannelServiceManagerImpl* dynamic_channel_service_manager, 44 l2cap::internal::ParameterProvider* parameter_provider) 45 : l2cap_handler_(l2cap_handler), acl_manager_(acl_manager), 46 fixed_channel_service_manager_(fixed_channel_service_manager), 47 dynamic_channel_service_manager_(dynamic_channel_service_manager), parameter_provider_(parameter_provider) { 48 acl_manager_->RegisterCallbacks(this, l2cap_handler_); 49 } 50 51 struct PendingFixedChannelConnection { 52 os::Handler* handler_; 53 FixedChannelManager::OnConnectionFailureCallback on_fail_callback_; 54 }; 55 56 struct PendingLink { 57 std::vector<PendingFixedChannelConnection> pending_fixed_channel_connections_; 58 }; 59 60 // ACL methods 61 62 Link* GetLink(hci::Address device); 63 void OnConnectSuccess(std::unique_ptr<hci::acl_manager::ClassicAclConnection> acl_connection) override; 64 void OnConnectFail(hci::Address device, hci::ErrorCode reason) override; 65 virtual void OnDisconnect(hci::Address device, hci::ErrorCode status); 66 67 // FixedChannelManager methods 68 69 void ConnectFixedChannelServices(hci::Address device, PendingFixedChannelConnection pending_fixed_channel_connection); 70 71 // DynamicChannelManager methods 72 73 void ConnectDynamicChannelServices( 74 hci::Address device, Link::PendingDynamicChannelConnection pending_connection, Psm psm); 75 76 // For SecurityModule to initiate an ACL link 77 void InitiateConnectionForSecurity(hci::Address remote); 78 79 // LinkManager will handle sending OnLinkConnected() callback and construct a LinkSecurityInterface proxy. 80 void RegisterLinkSecurityInterfaceListener(os::Handler* handler, LinkSecurityInterfaceListener* listener); 81 82 private: 83 // Handles requests from LinkSecurityInterface 84 friend class LinkSecurityInterfaceImpl; 85 void handle_link_security_hold(hci::Address remote); 86 void handle_link_security_release(hci::Address remote); 87 void handle_link_security_disconnect(hci::Address remote); 88 void handle_link_security_ensure_authenticated(hci::Address remote); 89 90 // Dependencies 91 os::Handler* l2cap_handler_; 92 hci::AclManager* acl_manager_; 93 FixedChannelServiceManagerImpl* fixed_channel_service_manager_; 94 DynamicChannelServiceManagerImpl* dynamic_channel_service_manager_; 95 l2cap::internal::ParameterProvider* parameter_provider_; 96 97 // Internal states 98 std::unordered_map<hci::Address, PendingLink> pending_links_; 99 std::unordered_map<hci::Address, Link> links_; 100 std::unordered_map<hci::Address, std::list<Psm>> pending_dynamic_channels_; 101 std::unordered_map<hci::Address, std::list<Link::PendingDynamicChannelConnection>> 102 pending_dynamic_channels_callbacks_; 103 os::Handler* link_security_interface_listener_handler_ = nullptr; 104 LinkSecurityInterfaceListener* link_security_interface_listener_ = nullptr; 105 DISALLOW_COPY_AND_ASSIGN(LinkManager); 106 }; 107 108 } // namespace internal 109 } // namespace classic 110 } // namespace l2cap 111 } // namespace bluetooth 112