| /****************************************************************************** |
| * |
| * Copyright 2002-2012 Broadcom Corporation |
| * |
| * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| ******************************************************************************/ |
| |
| /****************************************************************************** |
| * |
| * this file contains the connection interface functions |
| * |
| ******************************************************************************/ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include "bt_common.h" |
| #include "bt_types.h" |
| |
| #include "l2c_api.h" |
| #include "l2cdefs.h" |
| |
| #include "btm_api.h" |
| #include "btm_int.h" |
| #include "btu.h" |
| |
| #include "hiddefs.h" |
| |
| #include "bt_utils.h" |
| #include "hidh_api.h" |
| #include "hidh_int.h" |
| |
| #include "log/log.h" |
| #include "osi/include/osi.h" |
| |
| static uint8_t find_conn_by_cid(uint16_t cid); |
| static void hidh_conn_retry(uint8_t dhandle); |
| |
| /******************************************************************************/ |
| /* L O C A L F U N C T I O N P R O T O T Y P E S */ |
| /******************************************************************************/ |
| static void hidh_l2cif_connect_ind(const RawAddress& bd_addr, |
| uint16_t l2cap_cid, uint16_t psm, |
| uint8_t l2cap_id); |
| static void hidh_l2cif_connect_cfm(uint16_t l2cap_cid, uint16_t result); |
| static void hidh_l2cif_config_ind(uint16_t l2cap_cid, tL2CAP_CFG_INFO* p_cfg); |
| static void hidh_l2cif_config_cfm(uint16_t l2cap_cid, tL2CAP_CFG_INFO* p_cfg); |
| static void hidh_l2cif_disconnect_ind(uint16_t l2cap_cid, bool ack_needed); |
| static void hidh_l2cif_data_ind(uint16_t l2cap_cid, BT_HDR* p_msg); |
| static void hidh_l2cif_disconnect_cfm(uint16_t l2cap_cid, uint16_t result); |
| static void hidh_l2cif_cong_ind(uint16_t l2cap_cid, bool congested); |
| |
| static const tL2CAP_APPL_INFO hst_reg_info = { |
| hidh_l2cif_connect_ind, |
| hidh_l2cif_connect_cfm, |
| NULL, |
| hidh_l2cif_config_ind, |
| hidh_l2cif_config_cfm, |
| hidh_l2cif_disconnect_ind, |
| hidh_l2cif_disconnect_cfm, |
| NULL, |
| hidh_l2cif_data_ind, |
| hidh_l2cif_cong_ind, |
| NULL, /* tL2CA_TX_COMPLETE_CB */ |
| NULL /* tL2CA_CREDITS_RECEIVED_CB */}; |
| |
| /******************************************************************************* |
| * |
| * Function hidh_l2cif_reg |
| * |
| * Description This function initializes the SDP unit. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| tHID_STATUS hidh_conn_reg(void) { |
| int xx; |
| |
| /* Initialize the L2CAP configuration. We only care about MTU and flush */ |
| memset(&hh_cb.l2cap_cfg, 0, sizeof(tL2CAP_CFG_INFO)); |
| |
| hh_cb.l2cap_cfg.mtu_present = true; |
| hh_cb.l2cap_cfg.mtu = HID_HOST_MTU; |
| hh_cb.l2cap_cfg.flush_to_present = true; |
| hh_cb.l2cap_cfg.flush_to = HID_HOST_FLUSH_TO; |
| |
| /* Now, register with L2CAP */ |
| if (!L2CA_Register(HID_PSM_CONTROL, (tL2CAP_APPL_INFO*)&hst_reg_info)) { |
| HIDH_TRACE_ERROR("HID-Host Control Registration failed"); |
| return (HID_ERR_L2CAP_FAILED); |
| } |
| if (!L2CA_Register(HID_PSM_INTERRUPT, (tL2CAP_APPL_INFO*)&hst_reg_info)) { |
| L2CA_Deregister(HID_PSM_CONTROL); |
| HIDH_TRACE_ERROR("HID-Host Interrupt Registration failed"); |
| return (HID_ERR_L2CAP_FAILED); |
| } |
| |
| for (xx = 0; xx < HID_HOST_MAX_DEVICES; xx++) { |
| hh_cb.devices[xx].in_use = false; |
| hh_cb.devices[xx].conn.conn_state = HID_CONN_STATE_UNUSED; |
| } |
| |
| return (HID_SUCCESS); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function hidh_conn_disconnect |
| * |
| * Description This function disconnects a connection. |
| * |
| * Returns true if disconnect started, false if already disconnected |
| * |
| ******************************************************************************/ |
| tHID_STATUS hidh_conn_disconnect(uint8_t dhandle) { |
| tHID_CONN* p_hcon = &hh_cb.devices[dhandle].conn; |
| |
| HIDH_TRACE_EVENT("HID-Host disconnect"); |
| |
| if ((p_hcon->ctrl_cid != 0) || (p_hcon->intr_cid != 0)) { |
| p_hcon->conn_state = HID_CONN_STATE_DISCONNECTING; |
| |
| /* Set l2cap idle timeout to 0 (so ACL link is disconnected |
| * immediately after last channel is closed) */ |
| L2CA_SetIdleTimeoutByBdAddr(hh_cb.devices[dhandle].addr, 0, |
| BT_TRANSPORT_BR_EDR); |
| /* Disconnect both interrupt and control channels */ |
| if (p_hcon->intr_cid) |
| L2CA_DisconnectReq(p_hcon->intr_cid); |
| else if (p_hcon->ctrl_cid) |
| L2CA_DisconnectReq(p_hcon->ctrl_cid); |
| } else { |
| p_hcon->conn_state = HID_CONN_STATE_UNUSED; |
| } |
| |
| return (HID_SUCCESS); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function hidh_sec_check_complete_term |
| * |
| * Description HID security check complete callback function. |
| * |
| * Returns Send L2CA_ConnectRsp OK if secutiry check succeed; otherwise |
| * send security block L2C connection response. |
| * |
| ******************************************************************************/ |
| void hidh_sec_check_complete_term(UNUSED_ATTR const RawAddress* bd_addr, |
| UNUSED_ATTR tBT_TRANSPORT transport, |
| void* p_ref_data, uint8_t res) { |
| tHID_HOST_DEV_CTB* p_dev = (tHID_HOST_DEV_CTB*)p_ref_data; |
| |
| if (res == BTM_SUCCESS && p_dev->conn.conn_state == HID_CONN_STATE_SECURITY) { |
| p_dev->conn.disc_reason = HID_SUCCESS; /* Authentication passed. Reset |
| disc_reason (from |
| HID_ERR_AUTH_FAILED) */ |
| |
| p_dev->conn.conn_state = HID_CONN_STATE_CONNECTING_INTR; |
| |
| /* Send response to the L2CAP layer. */ |
| L2CA_ConnectRsp(p_dev->addr, p_dev->conn.ctrl_id, p_dev->conn.ctrl_cid, |
| L2CAP_CONN_OK, L2CAP_CONN_OK); |
| |
| /* Send a Configuration Request. */ |
| L2CA_ConfigReq(p_dev->conn.ctrl_cid, &hh_cb.l2cap_cfg); |
| |
| } |
| /* security check fail */ |
| else if (res != BTM_SUCCESS) { |
| p_dev->conn.disc_reason = |
| HID_ERR_AUTH_FAILED; /* Save reason for disconnecting */ |
| p_dev->conn.conn_state = HID_CONN_STATE_UNUSED; |
| L2CA_ConnectRsp(p_dev->addr, p_dev->conn.ctrl_id, p_dev->conn.ctrl_cid, |
| L2CAP_CONN_SECURITY_BLOCK, L2CAP_CONN_OK); |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * Function hidh_l2cif_connect_ind |
| * |
| * Description This function handles an inbound connection indication |
| * from L2CAP. This is the case where we are acting as a |
| * server. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| static void hidh_l2cif_connect_ind(const RawAddress& bd_addr, |
| uint16_t l2cap_cid, uint16_t psm, |
| uint8_t l2cap_id) { |
| tHID_CONN* p_hcon; |
| bool bAccept = true; |
| uint8_t i = HID_HOST_MAX_DEVICES; |
| tHID_HOST_DEV_CTB* p_dev; |
| |
| HIDH_TRACE_EVENT("HID-Host Rcvd L2CAP conn ind, PSM: 0x%04x CID 0x%x", psm, |
| l2cap_cid); |
| |
| /* always add incoming connection device into HID database by default */ |
| if (HID_HostAddDev(bd_addr, HID_SEC_REQUIRED, &i) != HID_SUCCESS) { |
| L2CA_ConnectRsp(bd_addr, l2cap_id, l2cap_cid, L2CAP_CONN_SECURITY_BLOCK, 0); |
| return; |
| } |
| |
| p_hcon = &hh_cb.devices[i].conn; |
| p_dev = &hh_cb.devices[i]; |
| |
| /* Check we are in the correct state for this */ |
| if (psm == HID_PSM_INTERRUPT) { |
| if (p_hcon->ctrl_cid == 0) { |
| HIDH_TRACE_WARNING( |
| "HID-Host Rcvd INTR L2CAP conn ind, but no CTL channel"); |
| bAccept = false; |
| } |
| if (p_hcon->conn_state != HID_CONN_STATE_CONNECTING_INTR) { |
| HIDH_TRACE_WARNING("HID-Host Rcvd INTR L2CAP conn ind, wrong state: %d", |
| p_hcon->conn_state); |
| bAccept = false; |
| } |
| } else /* CTRL channel */ |
| { |
| #if (HID_HOST_ACPT_NEW_CONN == TRUE) |
| p_hcon->ctrl_cid = p_hcon->intr_cid = 0; |
| p_hcon->conn_state = HID_CONN_STATE_UNUSED; |
| #else |
| if (p_hcon->conn_state != HID_CONN_STATE_UNUSED) { |
| HIDH_TRACE_WARNING("HID-Host - Rcvd CTL L2CAP conn ind, wrong state: %d", |
| p_hcon->conn_state); |
| bAccept = false; |
| } |
| #endif |
| } |
| |
| if (!bAccept) { |
| L2CA_ConnectRsp(bd_addr, l2cap_id, l2cap_cid, L2CAP_CONN_NO_RESOURCES, 0); |
| return; |
| } |
| |
| if (psm == HID_PSM_CONTROL) { |
| p_hcon->conn_flags = 0; |
| p_hcon->ctrl_cid = l2cap_cid; |
| p_hcon->ctrl_id = l2cap_id; |
| p_hcon->disc_reason = HID_L2CAP_CONN_FAIL; /* In case disconnection occurs |
| before security is completed, |
| then set CLOSE_EVT reason code |
| to 'connection failure' */ |
| |
| p_hcon->conn_state = HID_CONN_STATE_SECURITY; |
| if (btm_sec_mx_access_request( |
| p_dev->addr, HID_PSM_CONTROL, false, BTM_SEC_PROTO_HID, |
| (p_dev->attr_mask & HID_SEC_REQUIRED) ? HID_SEC_CHN : HID_NOSEC_CHN, |
| &hidh_sec_check_complete_term, p_dev) == BTM_CMD_STARTED) { |
| L2CA_ConnectRsp(bd_addr, l2cap_id, l2cap_cid, L2CAP_CONN_PENDING, |
| L2CAP_CONN_OK); |
| } |
| |
| return; |
| } |
| |
| /* Transition to the next appropriate state, configuration */ |
| p_hcon->conn_state = HID_CONN_STATE_CONFIG; |
| p_hcon->intr_cid = l2cap_cid; |
| |
| /* Send response to the L2CAP layer. */ |
| L2CA_ConnectRsp(bd_addr, l2cap_id, l2cap_cid, L2CAP_CONN_OK, L2CAP_CONN_OK); |
| |
| /* Send a Configuration Request. */ |
| L2CA_ConfigReq(l2cap_cid, &hh_cb.l2cap_cfg); |
| |
| HIDH_TRACE_EVENT( |
| "HID-Host Rcvd L2CAP conn ind, sent config req, PSM: 0x%04x CID 0x%x", |
| psm, l2cap_cid); |
| } |
| |
| void hidh_process_repage_timer_timeout(void* data) { |
| uint8_t dhandle = PTR_TO_UINT(data); |
| hidh_try_repage(dhandle); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function hidh_try_repage |
| * |
| * Description This function processes timeout (to page device). |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| void hidh_try_repage(uint8_t dhandle) { |
| tHID_HOST_DEV_CTB* device; |
| |
| hidh_conn_initiate(dhandle); |
| |
| device = &hh_cb.devices[dhandle]; |
| device->conn_tries++; |
| |
| hh_cb.callback(dhandle, device->addr, HID_HDEV_EVT_RETRYING, |
| device->conn_tries, NULL); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function hidh_sec_check_complete_orig |
| * |
| * Description This function checks to see if security procedures are being |
| * carried out or not.. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| void hidh_sec_check_complete_orig(UNUSED_ATTR const RawAddress* bd_addr, |
| UNUSED_ATTR tBT_TRANSPORT transport, |
| void* p_ref_data, uint8_t res) { |
| tHID_HOST_DEV_CTB* p_dev = (tHID_HOST_DEV_CTB*)p_ref_data; |
| uint8_t dhandle; |
| |
| // TODO(armansito): This kind of math to determine a device handle is way |
| // too dirty and unnecessary. Why can't |p_dev| store it's handle? |
| dhandle = (PTR_TO_UINT(p_dev) - PTR_TO_UINT(&(hh_cb.devices[0]))) / |
| sizeof(tHID_HOST_DEV_CTB); |
| if (res == BTM_SUCCESS && p_dev->conn.conn_state == HID_CONN_STATE_SECURITY) { |
| HIDH_TRACE_EVENT("HID-Host Originator security pass."); |
| p_dev->conn.disc_reason = HID_SUCCESS; /* Authentication passed. Reset |
| disc_reason (from |
| HID_ERR_AUTH_FAILED) */ |
| |
| /* Transition to the next appropriate state, configuration */ |
| p_dev->conn.conn_state = HID_CONN_STATE_CONFIG; |
| L2CA_ConfigReq(p_dev->conn.ctrl_cid, &hh_cb.l2cap_cfg); |
| HIDH_TRACE_EVENT("HID-Host Got Control conn cnf, sent cfg req, CID: 0x%x", |
| p_dev->conn.ctrl_cid); |
| } |
| |
| if (res != BTM_SUCCESS && p_dev->conn.conn_state == HID_CONN_STATE_SECURITY) { |
| #if (HID_HOST_MAX_CONN_RETRY > 0) |
| if (res == BTM_DEVICE_TIMEOUT) { |
| if (p_dev->conn_tries <= HID_HOST_MAX_CONN_RETRY) { |
| hidh_conn_retry(dhandle); |
| return; |
| } |
| } |
| #endif |
| p_dev->conn.disc_reason = |
| HID_ERR_AUTH_FAILED; /* Save reason for disconnecting */ |
| hidh_conn_disconnect(dhandle); |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * Function hidh_l2cif_connect_cfm |
| * |
| * Description This function handles the connect confirm events |
| * from L2CAP. This is the case when we are acting as a |
| * client and have sent a connect request. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| static void hidh_l2cif_connect_cfm(uint16_t l2cap_cid, uint16_t result) { |
| uint8_t dhandle; |
| tHID_CONN* p_hcon = NULL; |
| uint32_t reason; |
| tHID_HOST_DEV_CTB* p_dev = NULL; |
| |
| /* Find CCB based on CID, and verify we are in a state to accept this message |
| */ |
| dhandle = find_conn_by_cid(l2cap_cid); |
| if (dhandle < HID_HOST_MAX_DEVICES) { |
| p_dev = &hh_cb.devices[dhandle]; |
| p_hcon = &hh_cb.devices[dhandle].conn; |
| } |
| |
| if ((p_hcon == NULL) || (!(p_hcon->conn_flags & HID_CONN_FLAGS_IS_ORIG)) || |
| ((l2cap_cid == p_hcon->ctrl_cid) && |
| (p_hcon->conn_state != HID_CONN_STATE_CONNECTING_CTRL)) || |
| ((l2cap_cid == p_hcon->intr_cid) && |
| (p_hcon->conn_state != HID_CONN_STATE_CONNECTING_INTR) && |
| (p_hcon->conn_state != HID_CONN_STATE_DISCONNECTING))) { |
| HIDH_TRACE_WARNING("HID-Host Rcvd unexpected conn cnf, CID 0x%x ", |
| l2cap_cid); |
| return; |
| } |
| |
| if (result != L2CAP_CONN_OK) { |
| if (l2cap_cid == p_hcon->ctrl_cid) |
| p_hcon->ctrl_cid = 0; |
| else |
| p_hcon->intr_cid = 0; |
| |
| hidh_conn_disconnect(dhandle); |
| |
| #if (HID_HOST_MAX_CONN_RETRY > 0) |
| if ((hh_cb.devices[dhandle].conn_tries <= HID_HOST_MAX_CONN_RETRY) && |
| (result == HCI_ERR_CONNECTION_TOUT || result == HCI_ERR_UNSPECIFIED || |
| result == HCI_ERR_PAGE_TIMEOUT)) { |
| hidh_conn_retry(dhandle); |
| } else |
| #endif |
| { |
| reason = HID_L2CAP_CONN_FAIL | (uint32_t)result; |
| hh_cb.callback(dhandle, hh_cb.devices[dhandle].addr, HID_HDEV_EVT_CLOSE, |
| reason, NULL); |
| } |
| return; |
| } |
| /* receive Control Channel connect confirmation */ |
| if (l2cap_cid == p_hcon->ctrl_cid) { |
| /* check security requirement */ |
| p_hcon->conn_state = HID_CONN_STATE_SECURITY; |
| p_hcon->disc_reason = HID_L2CAP_CONN_FAIL; /* In case disconnection occurs |
| before security is completed, |
| then set CLOSE_EVT reason code |
| to "connection failure" */ |
| |
| btm_sec_mx_access_request( |
| p_dev->addr, HID_PSM_CONTROL, true, BTM_SEC_PROTO_HID, |
| (p_dev->attr_mask & HID_SEC_REQUIRED) ? HID_SEC_CHN : HID_NOSEC_CHN, |
| &hidh_sec_check_complete_orig, p_dev); |
| } else { |
| p_hcon->conn_state = HID_CONN_STATE_CONFIG; |
| /* Send a Configuration Request. */ |
| L2CA_ConfigReq(l2cap_cid, &hh_cb.l2cap_cfg); |
| HIDH_TRACE_EVENT("HID-Host got Interrupt conn cnf, sent cfg req, CID: 0x%x", |
| l2cap_cid); |
| } |
| |
| return; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function hidh_l2cif_config_ind |
| * |
| * Description This function processes the L2CAP configuration indication |
| * event. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| static void hidh_l2cif_config_ind(uint16_t l2cap_cid, tL2CAP_CFG_INFO* p_cfg) { |
| uint8_t dhandle; |
| tHID_CONN* p_hcon = NULL; |
| uint32_t reason; |
| |
| /* Find CCB based on CID */ |
| dhandle = find_conn_by_cid(l2cap_cid); |
| if (dhandle < HID_HOST_MAX_DEVICES) { |
| p_hcon = &hh_cb.devices[dhandle].conn; |
| } |
| |
| if (p_hcon == NULL) { |
| HIDH_TRACE_WARNING("HID-Host Rcvd L2CAP cfg ind, unknown CID: 0x%x", |
| l2cap_cid); |
| return; |
| } |
| |
| HIDH_TRACE_EVENT("HID-Host Rcvd cfg ind, sent cfg cfm, CID: 0x%x", l2cap_cid); |
| |
| /* Remember the remote MTU size */ |
| if ((!p_cfg->mtu_present) || (p_cfg->mtu > HID_HOST_MTU)) |
| p_hcon->rem_mtu_size = HID_HOST_MTU; |
| else |
| p_hcon->rem_mtu_size = p_cfg->mtu; |
| |
| /* For now, always accept configuration from the other side */ |
| p_cfg->flush_to_present = false; |
| p_cfg->mtu_present = false; |
| p_cfg->result = L2CAP_CFG_OK; |
| |
| L2CA_ConfigRsp(l2cap_cid, p_cfg); |
| |
| if (l2cap_cid == p_hcon->ctrl_cid) { |
| p_hcon->conn_flags |= HID_CONN_FLAGS_HIS_CTRL_CFG_DONE; |
| if ((p_hcon->conn_flags & HID_CONN_FLAGS_IS_ORIG) && |
| (p_hcon->conn_flags & HID_CONN_FLAGS_MY_CTRL_CFG_DONE)) { |
| /* Connect interrupt channel */ |
| p_hcon->disc_reason = HID_L2CAP_CONN_FAIL; /* Reset initial reason for |
| CLOSE_EVT: Connection |
| Attempt was made but failed |
| */ |
| p_hcon->intr_cid = |
| L2CA_ConnectReq(HID_PSM_INTERRUPT, hh_cb.devices[dhandle].addr); |
| if (p_hcon->intr_cid == 0) { |
| HIDH_TRACE_WARNING("HID-Host INTR Originate failed"); |
| reason = HID_L2CAP_REQ_FAIL; |
| p_hcon->conn_state = HID_CONN_STATE_UNUSED; |
| hidh_conn_disconnect(dhandle); |
| hh_cb.callback(dhandle, hh_cb.devices[dhandle].addr, HID_HDEV_EVT_CLOSE, |
| reason, NULL); |
| return; |
| } else { |
| /* Transition to the next appropriate state, waiting for connection |
| * confirm on interrupt channel. */ |
| p_hcon->conn_state = HID_CONN_STATE_CONNECTING_INTR; |
| } |
| } |
| } else |
| p_hcon->conn_flags |= HID_CONN_FLAGS_HIS_INTR_CFG_DONE; |
| |
| /* If all configuration is complete, change state and tell management we are |
| * up */ |
| if (((p_hcon->conn_flags & HID_CONN_FLAGS_ALL_CONFIGURED) == |
| HID_CONN_FLAGS_ALL_CONFIGURED) && |
| (p_hcon->conn_state == HID_CONN_STATE_CONFIG)) { |
| p_hcon->conn_state = HID_CONN_STATE_CONNECTED; |
| /* Reset disconnect reason to success, as connection successful */ |
| p_hcon->disc_reason = HID_SUCCESS; |
| |
| hh_cb.devices[dhandle].state = HID_DEV_CONNECTED; |
| hh_cb.callback(dhandle, hh_cb.devices[dhandle].addr, HID_HDEV_EVT_OPEN, 0, |
| NULL); |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * Function hidh_l2cif_config_cfm |
| * |
| * Description This function processes the L2CAP configuration confirmation |
| * event. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| static void hidh_l2cif_config_cfm(uint16_t l2cap_cid, tL2CAP_CFG_INFO* p_cfg) { |
| uint8_t dhandle; |
| tHID_CONN* p_hcon = NULL; |
| uint32_t reason; |
| |
| HIDH_TRACE_EVENT("HID-Host Rcvd cfg cfm, CID: 0x%x Result: %d", l2cap_cid, |
| p_cfg->result); |
| |
| /* Find CCB based on CID */ |
| dhandle = find_conn_by_cid(l2cap_cid); |
| if (dhandle < HID_HOST_MAX_DEVICES) p_hcon = &hh_cb.devices[dhandle].conn; |
| |
| if (p_hcon == NULL) { |
| HIDH_TRACE_WARNING("HID-Host Rcvd L2CAP cfg ind, unknown CID: 0x%x", |
| l2cap_cid); |
| return; |
| } |
| |
| /* If configuration failed, disconnect the channel(s) */ |
| if (p_cfg->result != L2CAP_CFG_OK) { |
| hidh_conn_disconnect(dhandle); |
| reason = HID_L2CAP_CFG_FAIL | (uint32_t)p_cfg->result; |
| hh_cb.callback(dhandle, hh_cb.devices[dhandle].addr, HID_HDEV_EVT_CLOSE, |
| reason, NULL); |
| return; |
| } |
| |
| if (l2cap_cid == p_hcon->ctrl_cid) { |
| p_hcon->conn_flags |= HID_CONN_FLAGS_MY_CTRL_CFG_DONE; |
| if ((p_hcon->conn_flags & HID_CONN_FLAGS_IS_ORIG) && |
| (p_hcon->conn_flags & HID_CONN_FLAGS_HIS_CTRL_CFG_DONE)) { |
| /* Connect interrupt channel */ |
| p_hcon->disc_reason = HID_L2CAP_CONN_FAIL; /* Reset initial reason for |
| CLOSE_EVT: Connection |
| Attempt was made but failed |
| */ |
| p_hcon->intr_cid = |
| L2CA_ConnectReq(HID_PSM_INTERRUPT, hh_cb.devices[dhandle].addr); |
| if (p_hcon->intr_cid == 0) { |
| HIDH_TRACE_WARNING("HID-Host INTR Originate failed"); |
| reason = HID_L2CAP_REQ_FAIL; |
| p_hcon->conn_state = HID_CONN_STATE_UNUSED; |
| hidh_conn_disconnect(dhandle); |
| hh_cb.callback(dhandle, hh_cb.devices[dhandle].addr, HID_HDEV_EVT_CLOSE, |
| reason, NULL); |
| return; |
| } else { |
| /* Transition to the next appropriate state, waiting for connection |
| * confirm on interrupt channel. */ |
| p_hcon->conn_state = HID_CONN_STATE_CONNECTING_INTR; |
| } |
| } |
| } else |
| p_hcon->conn_flags |= HID_CONN_FLAGS_MY_INTR_CFG_DONE; |
| |
| /* If all configuration is complete, change state and tell management we are |
| * up */ |
| if (((p_hcon->conn_flags & HID_CONN_FLAGS_ALL_CONFIGURED) == |
| HID_CONN_FLAGS_ALL_CONFIGURED) && |
| (p_hcon->conn_state == HID_CONN_STATE_CONFIG)) { |
| p_hcon->conn_state = HID_CONN_STATE_CONNECTED; |
| /* Reset disconnect reason to success, as connection successful */ |
| p_hcon->disc_reason = HID_SUCCESS; |
| |
| hh_cb.devices[dhandle].state = HID_DEV_CONNECTED; |
| hh_cb.callback(dhandle, hh_cb.devices[dhandle].addr, HID_HDEV_EVT_OPEN, 0, |
| NULL); |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * Function hidh_l2cif_disconnect_ind |
| * |
| * Description This function handles a disconnect event from L2CAP. If |
| * requested to, we ack the disconnect before dropping the CCB |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| static void hidh_l2cif_disconnect_ind(uint16_t l2cap_cid, bool ack_needed) { |
| uint8_t dhandle; |
| tHID_CONN* p_hcon = NULL; |
| uint16_t disc_res = HCI_SUCCESS; |
| uint16_t hid_close_evt_reason; |
| |
| /* Find CCB based on CID */ |
| dhandle = find_conn_by_cid(l2cap_cid); |
| if (dhandle < HID_HOST_MAX_DEVICES) p_hcon = &hh_cb.devices[dhandle].conn; |
| |
| if (p_hcon == NULL) { |
| HIDH_TRACE_WARNING("HID-Host Rcvd L2CAP disc, unknown CID: 0x%x", |
| l2cap_cid); |
| return; |
| } |
| |
| if (ack_needed) L2CA_DisconnectRsp(l2cap_cid); |
| |
| HIDH_TRACE_EVENT("HID-Host Rcvd L2CAP disc, CID: 0x%x", l2cap_cid); |
| |
| p_hcon->conn_state = HID_CONN_STATE_DISCONNECTING; |
| |
| if (l2cap_cid == p_hcon->ctrl_cid) |
| p_hcon->ctrl_cid = 0; |
| else |
| p_hcon->intr_cid = 0; |
| |
| if ((p_hcon->ctrl_cid == 0) && (p_hcon->intr_cid == 0)) { |
| hh_cb.devices[dhandle].state = HID_DEV_NO_CONN; |
| p_hcon->conn_state = HID_CONN_STATE_UNUSED; |
| |
| if (!ack_needed) disc_res = btm_get_acl_disc_reason_code(); |
| |
| #if (HID_HOST_MAX_CONN_RETRY > 0) |
| if ((disc_res == HCI_ERR_CONNECTION_TOUT || |
| disc_res == HCI_ERR_UNSPECIFIED) && |
| (!(hh_cb.devices[dhandle].attr_mask & HID_RECONN_INIT)) && |
| (hh_cb.devices[dhandle].attr_mask & HID_NORMALLY_CONNECTABLE)) { |
| hh_cb.devices[dhandle].conn_tries = 0; |
| period_ms_t interval_ms = HID_HOST_REPAGE_WIN * 1000; |
| alarm_set_on_mloop(hh_cb.devices[dhandle].conn.process_repage_timer, |
| interval_ms, hidh_process_repage_timer_timeout, |
| UINT_TO_PTR(dhandle)); |
| hh_cb.callback(dhandle, hh_cb.devices[dhandle].addr, HID_HDEV_EVT_CLOSE, |
| disc_res, NULL); |
| } else |
| #endif |
| { |
| /* Set reason code for HID_HDEV_EVT_CLOSE */ |
| hid_close_evt_reason = p_hcon->disc_reason; |
| |
| /* If we got baseband sent HCI_DISCONNECT_COMPLETE_EVT due to security |
| * failure, then set reason to HID_ERR_AUTH_FAILED */ |
| if ((disc_res == HCI_ERR_AUTH_FAILURE) || |
| (disc_res == HCI_ERR_KEY_MISSING) || |
| (disc_res == HCI_ERR_HOST_REJECT_SECURITY) || |
| (disc_res == HCI_ERR_PAIRING_NOT_ALLOWED) || |
| (disc_res == HCI_ERR_UNIT_KEY_USED) || |
| (disc_res == HCI_ERR_PAIRING_WITH_UNIT_KEY_NOT_SUPPORTED) || |
| (disc_res == HCI_ERR_ENCRY_MODE_NOT_ACCEPTABLE) || |
| (disc_res == HCI_ERR_REPEATED_ATTEMPTS)) { |
| hid_close_evt_reason = HID_ERR_AUTH_FAILED; |
| } |
| |
| hh_cb.callback(dhandle, hh_cb.devices[dhandle].addr, HID_HDEV_EVT_CLOSE, |
| hid_close_evt_reason, NULL); |
| } |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * Function hidh_l2cif_disconnect_cfm |
| * |
| * Description This function handles a disconnect confirm event from L2CAP. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| static void hidh_l2cif_disconnect_cfm(uint16_t l2cap_cid, |
| UNUSED_ATTR uint16_t result) { |
| uint8_t dhandle; |
| tHID_CONN* p_hcon = NULL; |
| |
| /* Find CCB based on CID */ |
| dhandle = find_conn_by_cid(l2cap_cid); |
| if (dhandle < HID_HOST_MAX_DEVICES) p_hcon = &hh_cb.devices[dhandle].conn; |
| |
| if (p_hcon == NULL) { |
| HIDH_TRACE_WARNING("HID-Host Rcvd L2CAP disc cfm, unknown CID: 0x%x", |
| l2cap_cid); |
| return; |
| } |
| |
| HIDH_TRACE_EVENT("HID-Host Rcvd L2CAP disc cfm, CID: 0x%x", l2cap_cid); |
| |
| if (l2cap_cid == p_hcon->ctrl_cid) |
| p_hcon->ctrl_cid = 0; |
| else { |
| p_hcon->intr_cid = 0; |
| if (p_hcon->ctrl_cid) { |
| HIDH_TRACE_EVENT("HID-Host Initiating L2CAP Ctrl disconnection"); |
| L2CA_DisconnectReq(p_hcon->ctrl_cid); |
| } |
| } |
| |
| if ((p_hcon->ctrl_cid == 0) && (p_hcon->intr_cid == 0)) { |
| hh_cb.devices[dhandle].state = HID_DEV_NO_CONN; |
| p_hcon->conn_state = HID_CONN_STATE_UNUSED; |
| hh_cb.callback(dhandle, hh_cb.devices[dhandle].addr, HID_HDEV_EVT_CLOSE, |
| p_hcon->disc_reason, NULL); |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * Function hidh_l2cif_cong_ind |
| * |
| * Description This function handles a congestion status event from L2CAP. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| static void hidh_l2cif_cong_ind(uint16_t l2cap_cid, bool congested) { |
| uint8_t dhandle; |
| tHID_CONN* p_hcon = NULL; |
| |
| /* Find CCB based on CID */ |
| dhandle = find_conn_by_cid(l2cap_cid); |
| if (dhandle < HID_HOST_MAX_DEVICES) p_hcon = &hh_cb.devices[dhandle].conn; |
| |
| if (p_hcon == NULL) { |
| HIDH_TRACE_WARNING( |
| "HID-Host Rcvd L2CAP congestion status, unknown CID: 0x%x", l2cap_cid); |
| return; |
| } |
| |
| HIDH_TRACE_EVENT("HID-Host Rcvd L2CAP congestion status, CID: 0x%x Cong: %d", |
| l2cap_cid, congested); |
| |
| if (congested) |
| p_hcon->conn_flags |= HID_CONN_FLAGS_CONGESTED; |
| else { |
| p_hcon->conn_flags &= ~HID_CONN_FLAGS_CONGESTED; |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * Function hidh_l2cif_data_ind |
| * |
| * Description This function is called when data is received from L2CAP. |
| * if we are the originator of the connection, we are the SDP |
| * client, and the received message is queued up for the |
| * client. |
| * |
| * If we are the destination of the connection, we are the SDP |
| * server, so the message is passed to the server processing |
| * function. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| static void hidh_l2cif_data_ind(uint16_t l2cap_cid, BT_HDR* p_msg) { |
| uint8_t* p_data = (uint8_t*)(p_msg + 1) + p_msg->offset; |
| uint8_t ttype, param, rep_type, evt; |
| uint8_t dhandle; |
| tHID_CONN* p_hcon = NULL; |
| |
| HIDH_TRACE_DEBUG("HID-Host hidh_l2cif_data_ind [l2cap_cid=0x%04x]", |
| l2cap_cid); |
| |
| /* Find CCB based on CID */ |
| dhandle = find_conn_by_cid(l2cap_cid); |
| if (dhandle < HID_HOST_MAX_DEVICES) p_hcon = &hh_cb.devices[dhandle].conn; |
| |
| if (p_hcon == NULL) { |
| HIDH_TRACE_WARNING("HID-Host Rcvd L2CAP data, unknown CID: 0x%x", |
| l2cap_cid); |
| osi_free(p_msg); |
| return; |
| } |
| |
| if (p_msg->len < 1) { |
| HIDH_TRACE_WARNING("Rcvd L2CAP data, invalid length %d, should be >= 1", |
| p_msg->len); |
| osi_free(p_msg); |
| android_errorWriteLog(0x534e4554, "80493272"); |
| return; |
| } |
| |
| ttype = HID_GET_TRANS_FROM_HDR(*p_data); |
| param = HID_GET_PARAM_FROM_HDR(*p_data); |
| rep_type = param & HID_PAR_REP_TYPE_MASK; |
| p_data++; |
| |
| /* Get rid of the data type */ |
| p_msg->len--; |
| p_msg->offset++; |
| |
| switch (ttype) { |
| case HID_TRANS_HANDSHAKE: |
| hh_cb.callback(dhandle, hh_cb.devices[dhandle].addr, |
| HID_HDEV_EVT_HANDSHAKE, param, NULL); |
| osi_free(p_msg); |
| break; |
| |
| case HID_TRANS_CONTROL: |
| switch (param) { |
| case HID_PAR_CONTROL_VIRTUAL_CABLE_UNPLUG: |
| hidh_conn_disconnect(dhandle); |
| /* Device is unplugging from us. Tell USB */ |
| hh_cb.callback(dhandle, hh_cb.devices[dhandle].addr, |
| HID_HDEV_EVT_VC_UNPLUG, 0, NULL); |
| break; |
| |
| default: |
| break; |
| } |
| osi_free(p_msg); |
| break; |
| |
| case HID_TRANS_DATA: |
| evt = (hh_cb.devices[dhandle].conn.intr_cid == l2cap_cid) |
| ? HID_HDEV_EVT_INTR_DATA |
| : HID_HDEV_EVT_CTRL_DATA; |
| hh_cb.callback(dhandle, hh_cb.devices[dhandle].addr, evt, rep_type, |
| p_msg); |
| break; |
| |
| case HID_TRANS_DATAC: |
| evt = (hh_cb.devices[dhandle].conn.intr_cid == l2cap_cid) |
| ? HID_HDEV_EVT_INTR_DATC |
| : HID_HDEV_EVT_CTRL_DATC; |
| hh_cb.callback(dhandle, hh_cb.devices[dhandle].addr, evt, rep_type, |
| p_msg); |
| break; |
| |
| default: |
| osi_free(p_msg); |
| break; |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * Function hidh_conn_snd_data |
| * |
| * Description This function is sends out data. |
| * |
| * Returns tHID_STATUS |
| * |
| ******************************************************************************/ |
| tHID_STATUS hidh_conn_snd_data(uint8_t dhandle, uint8_t trans_type, |
| uint8_t param, uint16_t data, uint8_t report_id, |
| BT_HDR* buf) { |
| tHID_CONN* p_hcon = &hh_cb.devices[dhandle].conn; |
| BT_HDR* p_buf; |
| uint8_t* p_out; |
| uint16_t bytes_copied; |
| bool seg_req = false; |
| uint16_t data_size; |
| uint16_t cid; |
| uint16_t buf_size; |
| uint8_t use_data = 0; |
| bool blank_datc = false; |
| |
| if (!BTM_IsAclConnectionUp(hh_cb.devices[dhandle].addr, |
| BT_TRANSPORT_BR_EDR)) { |
| osi_free(buf); |
| return HID_ERR_NO_CONNECTION; |
| } |
| |
| if (p_hcon->conn_flags & HID_CONN_FLAGS_CONGESTED) { |
| osi_free(buf); |
| return HID_ERR_CONGESTED; |
| } |
| |
| switch (trans_type) { |
| case HID_TRANS_CONTROL: |
| case HID_TRANS_GET_REPORT: |
| case HID_TRANS_SET_REPORT: |
| case HID_TRANS_GET_PROTOCOL: |
| case HID_TRANS_SET_PROTOCOL: |
| case HID_TRANS_GET_IDLE: |
| case HID_TRANS_SET_IDLE: |
| cid = p_hcon->ctrl_cid; |
| buf_size = HID_CONTROL_BUF_SIZE; |
| break; |
| case HID_TRANS_DATA: |
| cid = p_hcon->intr_cid; |
| buf_size = HID_INTERRUPT_BUF_SIZE; |
| break; |
| default: |
| return (HID_ERR_INVALID_PARAM); |
| } |
| |
| if (trans_type == HID_TRANS_SET_IDLE) |
| use_data = 1; |
| else if ((trans_type == HID_TRANS_GET_REPORT) && (param & 0x08)) |
| use_data = 2; |
| |
| do { |
| if (buf == NULL || blank_datc) { |
| p_buf = (BT_HDR*)osi_malloc(buf_size); |
| |
| p_buf->offset = L2CAP_MIN_OFFSET; |
| seg_req = false; |
| data_size = 0; |
| bytes_copied = 0; |
| blank_datc = false; |
| } else if ((buf->len > (p_hcon->rem_mtu_size - 1))) { |
| p_buf = (BT_HDR*)osi_malloc(buf_size); |
| |
| p_buf->offset = L2CAP_MIN_OFFSET; |
| seg_req = true; |
| data_size = buf->len; |
| bytes_copied = p_hcon->rem_mtu_size - 1; |
| } else { |
| p_buf = buf; |
| p_buf->offset -= 1; |
| seg_req = false; |
| data_size = buf->len; |
| bytes_copied = buf->len; |
| } |
| |
| p_out = (uint8_t*)(p_buf + 1) + p_buf->offset; |
| *p_out++ = HID_BUILD_HDR(trans_type, param); |
| |
| /* If report ID required for this device */ |
| if ((trans_type == HID_TRANS_GET_REPORT) && (report_id != 0)) { |
| *p_out = report_id; |
| data_size = bytes_copied = 1; |
| } |
| |
| if (seg_req) { |
| memcpy(p_out, (((uint8_t*)(buf + 1)) + buf->offset), bytes_copied); |
| buf->offset += bytes_copied; |
| buf->len -= bytes_copied; |
| } else if (use_data == 1) { |
| *(p_out + bytes_copied) = data & 0xff; |
| } else if (use_data == 2) { |
| *(p_out + bytes_copied) = data & 0xff; |
| *(p_out + bytes_copied + 1) = (data >> 8) & 0xff; |
| } |
| |
| p_buf->len = bytes_copied + 1 + use_data; |
| data_size -= bytes_copied; |
| |
| /* Send the buffer through L2CAP */ |
| if ((p_hcon->conn_flags & HID_CONN_FLAGS_CONGESTED) || |
| (!L2CA_DataWrite(cid, p_buf))) |
| return (HID_ERR_CONGESTED); |
| |
| if (data_size) |
| trans_type = HID_TRANS_DATAC; |
| else if (bytes_copied == (p_hcon->rem_mtu_size - 1)) { |
| trans_type = HID_TRANS_DATAC; |
| blank_datc = true; |
| } |
| |
| } while ((data_size != 0) || blank_datc); |
| |
| return (HID_SUCCESS); |
| } |
| /******************************************************************************* |
| * |
| * Function hidh_conn_initiate |
| * |
| * Description This function is called by the management to create a |
| * connection. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| tHID_STATUS hidh_conn_initiate(uint8_t dhandle) { |
| uint8_t service_id = BTM_SEC_SERVICE_HIDH_NOSEC_CTRL; |
| uint32_t mx_chan_id = HID_NOSEC_CHN; |
| |
| tHID_HOST_DEV_CTB* p_dev = &hh_cb.devices[dhandle]; |
| |
| if (p_dev->conn.conn_state != HID_CONN_STATE_UNUSED) |
| return (HID_ERR_CONN_IN_PROCESS); |
| |
| p_dev->conn.ctrl_cid = 0; |
| p_dev->conn.intr_cid = 0; |
| p_dev->conn.disc_reason = |
| HID_L2CAP_CONN_FAIL; /* Reset initial reason for CLOSE_EVT: Connection |
| Attempt was made but failed */ |
| |
| /* We are the originator of this connection */ |
| p_dev->conn.conn_flags = HID_CONN_FLAGS_IS_ORIG; |
| |
| if (p_dev->attr_mask & HID_SEC_REQUIRED) { |
| service_id = BTM_SEC_SERVICE_HIDH_SEC_CTRL; |
| mx_chan_id = HID_SEC_CHN; |
| } |
| BTM_SetOutService(p_dev->addr, service_id, mx_chan_id); |
| |
| /* Check if L2CAP started the connection process */ |
| p_dev->conn.ctrl_cid = L2CA_ConnectReq(HID_PSM_CONTROL, p_dev->addr); |
| if (p_dev->conn.ctrl_cid == 0) { |
| HIDH_TRACE_WARNING("HID-Host Originate failed"); |
| hh_cb.callback(dhandle, hh_cb.devices[dhandle].addr, HID_HDEV_EVT_CLOSE, |
| HID_ERR_L2CAP_FAILED, NULL); |
| } else { |
| /* Transition to the next appropriate state, waiting for connection confirm |
| * on control channel. */ |
| p_dev->conn.conn_state = HID_CONN_STATE_CONNECTING_CTRL; |
| } |
| |
| return (HID_SUCCESS); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function find_conn_by_cid |
| * |
| * Description This function finds a connection control block based on CID |
| * |
| * Returns address of control block, or NULL if not found |
| * |
| ******************************************************************************/ |
| static uint8_t find_conn_by_cid(uint16_t cid) { |
| uint8_t xx; |
| |
| for (xx = 0; xx < HID_HOST_MAX_DEVICES; xx++) { |
| if ((hh_cb.devices[xx].in_use) && |
| (hh_cb.devices[xx].conn.conn_state != HID_CONN_STATE_UNUSED) && |
| ((hh_cb.devices[xx].conn.ctrl_cid == cid) || |
| (hh_cb.devices[xx].conn.intr_cid == cid))) |
| break; |
| } |
| |
| return (xx); |
| } |
| |
| void hidh_conn_dereg(void) { |
| L2CA_Deregister(HID_PSM_CONTROL); |
| L2CA_Deregister(HID_PSM_INTERRUPT); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function hidh_conn_retry |
| * |
| * Description This function is called to retry a failed connection. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| static void hidh_conn_retry(uint8_t dhandle) { |
| tHID_HOST_DEV_CTB* p_dev = &hh_cb.devices[dhandle]; |
| |
| p_dev->conn.conn_state = HID_CONN_STATE_UNUSED; |
| #if (HID_HOST_REPAGE_WIN > 0) |
| period_ms_t interval_ms = HID_HOST_REPAGE_WIN * 1000; |
| alarm_set_on_mloop(p_dev->conn.process_repage_timer, interval_ms, |
| hidh_process_repage_timer_timeout, UINT_TO_PTR(dhandle)); |
| #else |
| hidh_try_repage(dhandle); |
| #endif |
| } |
