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158 lines
6.4 KiB
158 lines
6.4 KiB
4 months ago
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/*
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* Copyright 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <memory>
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#include <unordered_map>
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#include "hci/acl_manager/classic_acl_connection.h"
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#include "hci/address.h"
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#include "hci/class_of_device.h"
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#include "l2cap/classic/dynamic_channel_manager.h"
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#include "l2cap/classic/fixed_channel_manager.h"
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#include "l2cap/classic/internal/dynamic_channel_service_manager_impl.h"
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#include "l2cap/classic/internal/fixed_channel_service_manager_impl.h"
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#include "l2cap/classic/internal/link.h"
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#include "l2cap/classic/link_property_listener.h"
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#include "l2cap/classic/link_security_interface.h"
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#include "l2cap/internal/parameter_provider.h"
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#include "l2cap/internal/scheduler.h"
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#include "os/handler.h"
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namespace bluetooth {
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namespace l2cap {
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namespace classic {
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namespace internal {
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class DumpsysHelper;
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class LinkManager : public hci::acl_manager::ConnectionCallbacks {
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public:
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LinkManager(os::Handler* l2cap_handler, hci::AclManager* acl_manager,
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FixedChannelServiceManagerImpl* fixed_channel_service_manager,
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DynamicChannelServiceManagerImpl* dynamic_channel_service_manager,
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l2cap::internal::ParameterProvider* parameter_provider)
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: l2cap_handler_(l2cap_handler), acl_manager_(acl_manager),
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fixed_channel_service_manager_(fixed_channel_service_manager),
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dynamic_channel_service_manager_(dynamic_channel_service_manager), parameter_provider_(parameter_provider) {
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acl_manager_->RegisterCallbacks(this, l2cap_handler_);
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}
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struct PendingFixedChannelConnection {
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os::Handler* handler_;
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FixedChannelManager::OnConnectionFailureCallback on_fail_callback_;
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};
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struct PendingLink {
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std::vector<PendingFixedChannelConnection> pending_fixed_channel_connections_;
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};
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// ACL methods
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Link* GetLink(hci::Address device);
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void OnConnectSuccess(std::unique_ptr<hci::acl_manager::ClassicAclConnection> acl_connection) override;
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void OnConnectFail(hci::Address device, hci::ErrorCode reason) override;
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void HACK_OnEscoConnectRequest(hci::Address, hci::ClassOfDevice) override;
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void HACK_OnScoConnectRequest(hci::Address, hci::ClassOfDevice) override;
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virtual void OnDisconnect(hci::Address device, hci::ErrorCode status);
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void OnAuthenticationComplete(hci::ErrorCode hci_status, hci::Address device);
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void OnEncryptionChange(hci::Address device, hci::EncryptionEnabled enabled);
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void OnReadRemoteVersionInformation(
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hci::ErrorCode hci_status,
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hci::Address device,
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uint8_t lmp_version,
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uint16_t manufacturer_name,
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uint16_t sub_version);
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void OnReadRemoteSupportedFeatures(hci::Address device, uint64_t features);
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void OnReadRemoteExtendedFeatures(
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hci::Address device, uint8_t page_number, uint8_t max_page_number, uint64_t features);
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void OnRoleChange(hci::ErrorCode hci_status, hci::Address remote, hci::Role role);
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void OnReadClockOffset(hci::Address remote, uint16_t clock_offset);
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void OnModeChange(hci::ErrorCode hci_status, hci::Address remote, hci::Mode mode, uint16_t interval);
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void OnSniffSubrating(
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hci::ErrorCode hci_status,
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hci::Address remote,
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uint16_t max_tx_lat,
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uint16_t max_rx_lat,
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uint16_t min_remote_timeout,
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uint16_t min_local_timeout);
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// FixedChannelManager methods
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void ConnectFixedChannelServices(hci::Address device, PendingFixedChannelConnection pending_fixed_channel_connection);
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// DynamicChannelManager methods
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void ConnectDynamicChannelServices(
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hci::Address device, Link::PendingDynamicChannelConnection pending_connection, Psm psm);
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// For SecurityModule to initiate an ACL link
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void InitiateConnectionForSecurity(hci::Address remote);
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// LinkManager will handle sending OnLinkConnected() callback and construct a LinkSecurityInterface proxy.
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void RegisterLinkSecurityInterfaceListener(os::Handler* handler, LinkSecurityInterfaceListener* listener);
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// For the link to get LinkSecurityInterfaceListener
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LinkSecurityInterfaceListener* GetLinkSecurityInterfaceListener();
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// Registerlink callbacks
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void RegisterLinkPropertyListener(os::Handler* handler, LinkPropertyListener* listener);
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// Reported by link to indicate how many pending packets are remaining to be set.
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// If there is anything outstanding, don't delete link
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void OnPendingPacketChange(hci::Address remote, int num_packets);
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private:
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// Handles requests from LinkSecurityInterface
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friend class LinkSecurityInterfaceImpl;
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friend class DumpsysHelper;
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void handle_link_security_hold(hci::Address remote);
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void handle_link_security_release(hci::Address remote);
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void handle_link_security_disconnect(hci::Address remote);
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void handle_link_security_ensure_authenticated(hci::Address remote);
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void handle_link_security_ensure_encrypted(hci::Address remote);
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// Dependencies
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os::Handler* l2cap_handler_;
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hci::AclManager* acl_manager_;
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FixedChannelServiceManagerImpl* fixed_channel_service_manager_;
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DynamicChannelServiceManagerImpl* dynamic_channel_service_manager_;
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l2cap::internal::ParameterProvider* parameter_provider_;
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// Internal states
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std::unordered_map<hci::Address, PendingLink> pending_links_;
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std::unordered_map<hci::Address, Link> links_;
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std::unordered_map<hci::Address, std::list<Psm>> pending_dynamic_channels_;
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std::unordered_map<hci::Address, std::list<Link::PendingDynamicChannelConnection>>
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pending_dynamic_channels_callbacks_;
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os::Handler* link_security_interface_listener_handler_ = nullptr;
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LinkSecurityInterfaceListener* link_security_interface_listener_ = nullptr;
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LinkPropertyListener* link_property_listener_ = nullptr;
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os::Handler* link_property_callback_handler_ = nullptr;
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std::unordered_set<hci::Address> disconnected_links_;
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std::unordered_set<hci::Address> links_with_pending_packets_;
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DISALLOW_COPY_AND_ASSIGN(LinkManager);
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};
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} // namespace internal
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} // namespace classic
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} // namespace l2cap
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} // namespace bluetooth
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