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android / platform / system / nfc / fe53fef3a8fe2aaedb5306f926e7346caf94caa8 / . / src / nfc / nfc / nfc_ncif.cc
blob: c31978438a0d00e3b400dd4be9904d2699f1e026 [file] [log] [blame]
/******************************************************************************
*
* Copyright (C) 1999-2014 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 functions that interface with the NFC NCI transport.
* On the receive side, it routes events to the appropriate handler
* (callback). On the transmit side, it manages the command transmission.
*
******************************************************************************/
#include <android-base/stringprintf.h>
#include <base/logging.h>
#include <fcntl.h>
#include <log/log.h>
#include <sys/stat.h>
#include "nfc_target.h"
#include "include/debug_nfcsnoop.h"
#include "nci_defs.h"
#include "nci_hmsgs.h"
#include "nfc_api.h"
#include "nfc_int.h"
#include "rw_api.h"
#include "rw_int.h"
#include <statslog.h>
#include "metrics.h"
using android::base::StringPrintf;
#if (NFC_RW_ONLY == FALSE)
static const uint8_t nfc_mpl_code_to_size[] = {64, 128, 192, 254};
#endif /* NFC_RW_ONLY */
#if (APPL_DTA_MODE == TRUE)
// Global Structure varibale for FW Version
static tNFC_FW_VERSION nfc_fw_version;
#endif
#define NFC_PB_ATTRIB_REQ_FIXED_BYTES 1
#define NFC_LB_ATTRIB_REQ_FIXED_BYTES 8
extern unsigned char appl_dta_mode_flag;
extern bool nfc_debug_enabled;
extern std::string nfc_storage_path;
static struct timeval timer_start;
static struct timeval timer_end;
static const off_t NATIVE_CRASH_FILE_SIZE = (1024 * 1024);
void storeNativeCrashLogs(void) {
std::string filename = "/native_crash_logs";
std::string filepath = nfc_storage_path + filename;
int fileStream;
off_t fileSize;
DLOG_IF(INFO, nfc_debug_enabled)
<< StringPrintf("%s: file=%s", __func__, filepath.c_str());
// check file size
struct stat st;
if (stat(filepath.c_str(), &st) == 0) {
fileSize = st.st_size;
} else {
fileSize = 0;
}
if (fileSize >= NATIVE_CRASH_FILE_SIZE) {
fileStream =
open(filepath.c_str(), O_RDWR | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR);
} else {
fileStream =
open(filepath.c_str(), O_RDWR | O_CREAT | O_APPEND, S_IRUSR | S_IWUSR);
}
if (fileStream >= 0) {
debug_nfcsnoop_dump(fileStream);
close(fileStream);
} else {
LOG(ERROR) << StringPrintf("%s: fail to create, error = %d", __func__,
errno);
}
}
/*******************************************************************************
**
** Function nfc_ncif_update_window
**
** Description Update tx cmd window to indicate that NFCC can received
**
** Returns void
**
*******************************************************************************/
void nfc_ncif_update_window(void) {
/* Sanity check - see if we were expecting a update_window */
if (nfc_cb.nci_cmd_window == NCI_MAX_CMD_WINDOW) {
if (nfc_cb.nfc_state != NFC_STATE_W4_HAL_CLOSE) {
LOG(ERROR) << StringPrintf("nfc_ncif_update_window: Unexpected call");
}
return;
}
/* Stop command-pending timer */
nfc_stop_timer(&nfc_cb.nci_wait_rsp_timer);
nfc_cb.p_vsc_cback = nullptr;
nfc_cb.nci_cmd_window++;
/* Check if there were any commands waiting to be sent */
nfc_ncif_check_cmd_queue(nullptr);
}
/*******************************************************************************
**
** Function nfc_ncif_cmd_timeout
**
** Description Handle a command timeout
**
** Returns void
**
*******************************************************************************/
void nfc_ncif_cmd_timeout(void) {
LOG(ERROR) << StringPrintf("nfc_ncif_cmd_timeout");
storeNativeCrashLogs();
/* report an error */
nfc_ncif_event_status(NFC_GEN_ERROR_REVT, NFC_STATUS_HW_TIMEOUT);
nfc_ncif_event_status(NFC_NFCC_TIMEOUT_REVT, NFC_STATUS_HW_TIMEOUT);
/* if enabling NFC, notify upper layer of failure */
if (nfc_cb.nfc_state == NFC_STATE_CORE_INIT) {
nfc_enabled(NFC_STATUS_FAILED, nullptr);
}
/* XXX maco since this failure is unrecoverable, abort the process */
#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
// Do not abort if for fuzz testing -- this may have some undesired
// effect but this is the best we can do.
#else
abort();
#endif
}
/*******************************************************************************
**
** Function nfc_wait_2_deactivate_timeout
**
** Description Handle a command timeout
**
** Returns void
**
*******************************************************************************/
void nfc_wait_2_deactivate_timeout(void) {
LOG(ERROR) << StringPrintf("nfc_wait_2_deactivate_timeout");
nfc_cb.flags &= ~NFC_FL_DEACTIVATING;
nci_snd_deactivate_cmd((uint8_t)nfc_cb.deactivate_timer.param);
}
/*******************************************************************************
**
** Function nfc_ncif_send_data
**
** Description This function is called to add the NCI data header
** and send it to NCIT task for sending it to transport
** as credits are available.
**
** Returns void
**
*******************************************************************************/
uint8_t nfc_ncif_send_data(tNFC_CONN_CB* p_cb, NFC_HDR* p_data) {
uint8_t* pp;
uint8_t* ps;
uint8_t ulen = NCI_MAX_PAYLOAD_SIZE;
NFC_HDR* p;
uint8_t pbf = 1;
uint8_t buffer_size = p_cb->buff_size;
uint8_t hdr0 = p_cb->conn_id;
bool fragmented = false;
DLOG_IF(INFO, nfc_debug_enabled)
<< StringPrintf("nfc_ncif_send_data :%d, num_buff:%d qc:%d",
p_cb->conn_id, p_cb->num_buff, p_cb->tx_q.count);
if (p_cb->id == NFC_RF_CONN_ID) {
if (nfc_cb.nfc_state != NFC_STATE_OPEN) {
if (nfc_cb.nfc_state == NFC_STATE_CLOSING) {
if ((p_data == nullptr) && /* called because credit from NFCC */
(nfc_cb.flags & NFC_FL_DEACTIVATING)) {
if (p_cb->init_credits == p_cb->num_buff) {
/* all the credits are back */
nfc_cb.flags &= ~NFC_FL_DEACTIVATING;
DLOG_IF(INFO, nfc_debug_enabled) << StringPrintf(
"deactivating NFC-DEP init_credits:%d, num_buff:%d",
p_cb->init_credits, p_cb->num_buff);
nfc_stop_timer(&nfc_cb.deactivate_timer);
nci_snd_deactivate_cmd((uint8_t)nfc_cb.deactivate_timer.param);
}
}
}
return NCI_STATUS_FAILED;
}
}
if (p_data) {
/* always enqueue the data to the tx queue */
GKI_enqueue(&p_cb->tx_q, p_data);
}
/* try to send the first data packet in the tx queue */
p_data = (NFC_HDR*)GKI_getfirst(&p_cb->tx_q);
/* post data fragment to NCIT task as credits are available */
while (p_data && (p_cb->num_buff > 0)) {
if (p_data->len <= buffer_size) {
pbf = 0; /* last fragment */
ulen = (uint8_t)(p_data->len);
fragmented = false;
} else {
fragmented = true;
ulen = buffer_size;
}
if (!fragmented) {
/* if data packet is not fragmented, use the original buffer */
p = p_data;
p_data = (NFC_HDR*)GKI_dequeue(&p_cb->tx_q);
} else {
/* the data packet is too big and need to be fragmented
* prepare a new GKI buffer
* (even the last fragment to avoid issues) */
p = NCI_GET_CMD_BUF(ulen);
if (p == nullptr) return (NCI_STATUS_BUFFER_FULL);
p->len = ulen;
p->offset = NCI_MSG_OFFSET_SIZE + NCI_DATA_HDR_SIZE + 1;
if (p->len) {
pp = (uint8_t*)(p + 1) + p->offset;
ps = (uint8_t*)(p_data + 1) + p_data->offset;
memcpy(pp, ps, ulen);
}
/* adjust the NFC_HDR on the old fragment */
p_data->len -= ulen;
p_data->offset += ulen;
}
p->event = BT_EVT_TO_NFC_NCI;
p->layer_specific = pbf;
p->len += NCI_DATA_HDR_SIZE;
p->offset -= NCI_DATA_HDR_SIZE;
pp = (uint8_t*)(p + 1) + p->offset;
/* build NCI Data packet header */
NCI_DATA_PBLD_HDR(pp, pbf, hdr0, ulen);
if (p_cb->num_buff != NFC_CONN_NO_FC) p_cb->num_buff--;
/* send to HAL */
nfcsnoop_capture(p, false);
HAL_WRITE(p);
if (!fragmented) {
/* check if there are more data to send */
p_data = (NFC_HDR*)GKI_getfirst(&p_cb->tx_q);
}
}
// log duration for the first hce data response
if (timer_start.tv_sec != 0 || timer_start.tv_usec != 0) {
gettimeofday(&timer_end, nullptr);
uint32_t delta_time_ms = (timer_end.tv_sec - timer_start.tv_sec) * 1000 +
(timer_end.tv_usec - timer_start.tv_usec) / 1000;
memset(&timer_start, 0, sizeof(timer_start));
memset(&timer_end, 0, sizeof(timer_end));
android::util::stats_write(android::util::NFC_HCE_TRANSACTION_OCCURRED,
(int32_t)delta_time_ms);
}
return (NCI_STATUS_OK);
}
/*******************************************************************************
**
** Function nfc_ncif_check_cmd_queue
**
** Description Send NCI command to the transport
**
** Returns void
**
*******************************************************************************/
void nfc_ncif_check_cmd_queue(NFC_HDR* p_buf) {
uint8_t* ps;
/* If there are commands waiting in the xmit queue, or if the controller
* cannot accept any more commands, */
/* then enqueue this command */
if (p_buf) {
if ((nfc_cb.nci_cmd_xmit_q.count) || (nfc_cb.nci_cmd_window == 0)) {
GKI_enqueue(&nfc_cb.nci_cmd_xmit_q, p_buf);
p_buf = nullptr;
}
}
/* If controller can accept another command, then send the next command */
if (nfc_cb.nci_cmd_window > 0) {
/* If no command was provided, or if older commands were in the queue, then
* get cmd from the queue */
if (!p_buf) p_buf = (NFC_HDR*)GKI_dequeue(&nfc_cb.nci_cmd_xmit_q);
if (p_buf) {
/* save the message header to double check the response */
ps = (uint8_t*)(p_buf + 1) + p_buf->offset;
memcpy(nfc_cb.last_hdr, ps, NFC_SAVED_HDR_SIZE);
memcpy(nfc_cb.last_cmd, ps + NCI_MSG_HDR_SIZE, NFC_SAVED_CMD_SIZE);
if (p_buf->layer_specific == NFC_WAIT_RSP_VSC) {
/* save the callback for NCI VSCs) */
nfc_cb.p_vsc_cback = (void*)((tNFC_NCI_VS_MSG*)p_buf)->p_cback;
} else if (p_buf->layer_specific == NFC_WAIT_RSP_RAW_VS) {
/* save the callback for RAW VS */
nfc_cb.p_vsc_cback = (void*)((tNFC_NCI_VS_MSG*)p_buf)->p_cback;
nfc_cb.rawVsCbflag = true;
}
/* Indicate command is pending */
nfc_cb.nci_cmd_window--;
/* send to HAL */
HAL_WRITE(p_buf);
/* start NFC command-timeout timer */
nfc_start_timer(&nfc_cb.nci_wait_rsp_timer,
(uint16_t)(NFC_TTYPE_NCI_WAIT_RSP),
nfc_cb.nci_wait_rsp_tout);
}
}
if (nfc_cb.nci_cmd_window == NCI_MAX_CMD_WINDOW) {
/* the command queue must be empty now */
if (nfc_cb.flags & NFC_FL_CONTROL_REQUESTED) {
/* HAL requested control or stack needs to handle pre-discover */
nfc_cb.flags &= ~NFC_FL_CONTROL_REQUESTED;
if (nfc_cb.flags & NFC_FL_DISCOVER_PENDING) {
if (nfc_cb.p_hal->prediscover()) {
/* HAL has the command window now */
nfc_cb.flags |= NFC_FL_CONTROL_GRANTED;
nfc_cb.nci_cmd_window = 0;
} else {
/* HAL does not need to send command,
* - restore the command window and issue the discovery command now */
nfc_cb.flags &= ~NFC_FL_DISCOVER_PENDING;
ps = (uint8_t*)nfc_cb.p_disc_pending;
nci_snd_discover_cmd(*ps, (tNFC_DISCOVER_PARAMS*)(ps + 1));
GKI_freebuf(nfc_cb.p_disc_pending);
nfc_cb.p_disc_pending = nullptr;
}
} else if (nfc_cb.flags & NFC_FL_HAL_REQUESTED) {
/* grant the control to HAL */
nfc_cb.flags &= ~NFC_FL_HAL_REQUESTED;
nfc_cb.flags |= NFC_FL_CONTROL_GRANTED;
nfc_cb.nci_cmd_window = 0;
nfc_cb.p_hal->control_granted();
}
}
}
}
#if (APPL_DTA_MODE == TRUE)
/*******************************************************************************
**
** Function nfc_ncif_getFWVersion
**
** Description This function is called to fet the FW Version
**
** Returns tNFC_FW_VERSION
**
*******************************************************************************/
tNFC_FW_VERSION nfc_ncif_getFWVersion() { return nfc_fw_version; }
#endif
/*******************************************************************************
**
** Function nfc_ncif_send_cmd
**
** Description Send NCI command to the NCIT task
**
** Returns void
**
*******************************************************************************/
void nfc_ncif_send_cmd(NFC_HDR* p_buf) {
/* post the p_buf to NCIT task */
p_buf->event = BT_EVT_TO_NFC_NCI;
p_buf->layer_specific = 0;
nfcsnoop_capture(p_buf, false);
nfc_ncif_check_cmd_queue(p_buf);
}
/*******************************************************************************
**
** Function nfc_ncif_process_event
**
** Description This function is called to process the
** data/response/notification from NFCC
**
** Returns TRUE if need to free buffer
**
*******************************************************************************/
bool nfc_ncif_process_event(NFC_HDR* p_msg) {
uint8_t mt, pbf, gid, *p;
bool free = true;
uint8_t oid;
uint16_t len;
uint8_t *p_old, old_gid, old_oid, old_mt;
p = (uint8_t*)(p_msg + 1) + p_msg->offset;
if (p_msg->len < 3) {
// Per NCI spec, every packets should have at least 3 bytes: HDR0, HDR1, and
// LEN field.
LOG(ERROR) << StringPrintf("Invalid NCI packet: p_msg->len: %d",
p_msg->len);
return free;
}
// LEN field contains the size of the payload, not including the 3-byte packet
// header.
len = p[2] + 3;
if (p_msg->len < len) {
// Making sure the packet holds enough data than it claims.
LOG(ERROR) << StringPrintf("Invalid NCI packet: p_msg->len (%d) < len (%d)",
p_msg->len, len);
return free;
}
NCI_MSG_PRS_HDR0(p, mt, pbf, gid);
oid = ((*p) & NCI_OID_MASK);
if (nfc_cb.rawVsCbflag == true &&
nfc_ncif_proc_proprietary_rsp(mt, gid, oid) == true) {
nci_proc_prop_raw_vs_rsp(p_msg);
nfc_cb.rawVsCbflag = false;
return free;
}
nfcsnoop_capture(p_msg, true);
switch (mt) {
case NCI_MT_DATA:
DLOG_IF(INFO, nfc_debug_enabled) << StringPrintf("NFC received data");
nfc_ncif_proc_data(p_msg);
free = false;
break;
case NCI_MT_RSP:
DLOG_IF(INFO, nfc_debug_enabled)
<< StringPrintf("NFC received rsp gid:%d", gid);
oid = ((*p) & NCI_OID_MASK);
p_old = nfc_cb.last_hdr;
NCI_MSG_PRS_HDR0(p_old, old_mt, pbf, old_gid);
old_oid = ((*p_old) & NCI_OID_MASK);
/* make sure this is the RSP we are waiting for before updating the
* command window */
if ((old_gid != gid) || (old_oid != oid)) {
LOG(ERROR) << StringPrintf(
"nfc_ncif_process_event unexpected rsp: gid:0x%x, oid:0x%x", gid,
oid);
return true;
}
switch (gid) {
case NCI_GID_CORE: /* 0000b NCI Core group */
free = nci_proc_core_rsp(p_msg);
break;
case NCI_GID_RF_MANAGE: /* 0001b NCI Discovery group */
nci_proc_rf_management_rsp(p_msg);
break;
#if (NFC_NFCEE_INCLUDED == TRUE)
#if (NFC_RW_ONLY == FALSE)
case NCI_GID_EE_MANAGE: /* 0x02 0010b NFCEE Discovery group */
nci_proc_ee_management_rsp(p_msg);
break;
#endif
#endif
case NCI_GID_PROP: /* 1111b Proprietary */
nci_proc_prop_rsp(p_msg);
break;
default:
LOG(ERROR) << StringPrintf("NFC: Unknown gid:%d", gid);
break;
}
nfc_ncif_update_window();
break;
case NCI_MT_NTF:
DLOG_IF(INFO, nfc_debug_enabled)
<< StringPrintf("NFC received ntf gid:%d", gid);
switch (gid) {
case NCI_GID_CORE: /* 0000b NCI Core group */
nci_proc_core_ntf(p_msg);
break;
case NCI_GID_RF_MANAGE: /* 0001b NCI Discovery group */
nci_proc_rf_management_ntf(p_msg);
break;
#if (NFC_NFCEE_INCLUDED == TRUE)
#if (NFC_RW_ONLY == FALSE)
case NCI_GID_EE_MANAGE: /* 0x02 0010b NFCEE Discovery group */
nci_proc_ee_management_ntf(p_msg);
break;
#endif
#endif
case NCI_GID_PROP: /* 1111b Proprietary */
nci_proc_prop_ntf(p_msg);
break;
default:
LOG(ERROR) << StringPrintf("NFC: Unknown gid:%d", gid);
break;
}
break;
default:
DLOG_IF(INFO, nfc_debug_enabled)
<< StringPrintf("NFC received unknown mt:0x%x, gid:%d", mt, gid);
}
return (free);
}
/*******************************************************************************
**
** Function nfc_ncif_rf_management_status
**
** Description This function is called to report an event
**
** Returns void
**
*******************************************************************************/
void nfc_ncif_rf_management_status(tNFC_DISCOVER_EVT event, uint8_t status) {
tNFC_DISCOVER evt_data;
if (nfc_cb.p_discv_cback) {
evt_data.status = (tNFC_STATUS)status;
(*nfc_cb.p_discv_cback)(event, &evt_data);
}
}
/*******************************************************************************
**
** Function nfc_ncif_set_config_status
**
** Description This function is called to report NFC_SET_CONFIG_REVT
**
** Returns void
**
*******************************************************************************/
void nfc_ncif_set_config_status(uint8_t* p, uint8_t len) {
tNFC_RESPONSE evt_data;
if (nfc_cb.p_resp_cback) {
evt_data.set_config.num_param_id = 0;
if (len == 0) {
LOG(ERROR) << StringPrintf("Insufficient RSP length");
evt_data.set_config.status = NFC_STATUS_SYNTAX_ERROR;
(*nfc_cb.p_resp_cback)(NFC_SET_CONFIG_REVT, &evt_data);
return;
}
evt_data.set_config.status = (tNFC_STATUS)*p++;
if (evt_data.set_config.status != NFC_STATUS_OK && len > 1) {
evt_data.set_config.num_param_id = *p++;
if (evt_data.set_config.num_param_id > NFC_MAX_NUM_IDS) {
android_errorWriteLog(0x534e4554, "114047681");
LOG(ERROR) << StringPrintf("OOB write num_param_id %d",
evt_data.set_config.num_param_id);
evt_data.set_config.num_param_id = 0;
} else if (evt_data.set_config.num_param_id <= len - 2) {
STREAM_TO_ARRAY(evt_data.set_config.param_ids, p,
evt_data.set_config.num_param_id);
} else {
LOG(ERROR) << StringPrintf("Insufficient RSP length %d,num_param_id %d",
len, evt_data.set_config.num_param_id);
evt_data.set_config.num_param_id = 0;
}
}
(*nfc_cb.p_resp_cback)(NFC_SET_CONFIG_REVT, &evt_data);
}
}
/*******************************************************************************
**
** Function nfc_ncif_event_status
**
** Description This function is called to report an event
**
** Returns void
**
*******************************************************************************/
void nfc_ncif_event_status(tNFC_RESPONSE_EVT event, uint8_t status) {
tNFC_RESPONSE evt_data;
if (event == NFC_NFCC_TIMEOUT_REVT && status == NFC_STATUS_HW_TIMEOUT) {
uint32_t cmd_hdr = (nfc_cb.last_hdr[0] << 8) | nfc_cb.last_hdr[1];
android::util::stats_write(android::util::NFC_ERROR_OCCURRED,
(int32_t)NCI_TIMEOUT, (int32_t)cmd_hdr,
(int32_t)status);
}
if (nfc_cb.p_resp_cback) {
evt_data.status = (tNFC_STATUS)status;
(*nfc_cb.p_resp_cback)(event, &evt_data);
}
}
/*******************************************************************************
**
** Function nfc_ncif_error_status
**
** Description This function is called to report an error event to data
** cback
**
** Returns void
**
*******************************************************************************/
void nfc_ncif_error_status(uint8_t conn_id, uint8_t status) {
tNFC_CONN_CB* p_cb = nfc_find_conn_cb_by_conn_id(conn_id);
if (p_cb && p_cb->p_cback) {
tNFC_CONN nfc_conn;
nfc_conn.status = status;
(*p_cb->p_cback)(conn_id, NFC_ERROR_CEVT, &nfc_conn);
}
android::util::stats_write(android::util::NFC_ERROR_OCCURRED,
(int32_t)ERROR_NTF, (int32_t)0, (int32_t)status);
}
/*******************************************************************************
**
** Function nfc_ncif_proc_rf_field_ntf
**
** Description This function is called to process RF field notification
**
** Returns void
**
*******************************************************************************/
#if (NFC_RW_ONLY == FALSE)
void nfc_ncif_proc_rf_field_ntf(uint8_t rf_status) {
tNFC_RESPONSE evt_data;
if (nfc_cb.p_resp_cback) {
evt_data.status = (tNFC_STATUS)NFC_STATUS_OK;
evt_data.rf_field.rf_field = rf_status;
(*nfc_cb.p_resp_cback)(NFC_RF_FIELD_REVT, &evt_data);
}
}
#endif
/*******************************************************************************
**
** Function nfc_ncif_proc_credits
**
** Description This function is called to process data credits
**
** Returns void
**
*******************************************************************************/
void nfc_ncif_proc_credits(uint8_t* p, uint16_t plen) {
uint8_t num, xx;
tNFC_CONN_CB* p_cb;
if (plen != 0) {
num = *p++;
plen--;
if (num * 2 > plen) {
android_errorWriteLog(0x534e4554, "118148142");
return;
}
for (xx = 0; xx < num; xx++) {
p_cb = nfc_find_conn_cb_by_conn_id(*p++);
if (p_cb && p_cb->num_buff != NFC_CONN_NO_FC) {
p_cb->num_buff += (*p);
#if (BT_USE_TRACES == TRUE)
if (p_cb->num_buff > p_cb->init_credits) {
if (nfc_cb.nfc_state == NFC_STATE_OPEN) {
/* if this happens in activated state, it's very likely that our
* NFCC has issues */
/* However, credit may be returned after deactivation */
LOG(ERROR) << StringPrintf("num_buff:0x%x, init_credits:0x%x",
p_cb->num_buff, p_cb->init_credits);
}
p_cb->num_buff = p_cb->init_credits;
}
#endif
/* check if there's nay data in tx q to be sent */
nfc_ncif_send_data(p_cb, nullptr);
}
p++;
}
}
}
/*******************************************************************************
**
** Function nfc_ncif_decode_rf_params
**
** Description This function is called to process the detected technology
** and mode and the associated parameters for DISCOVER_NTF and
** ACTIVATE_NTF
**
** Returns void
**
*******************************************************************************/
uint8_t* nfc_ncif_decode_rf_params(tNFC_RF_TECH_PARAMS* p_param, uint8_t* p) {
tNFC_RF_PA_PARAMS* p_pa;
uint8_t len, *p_start, u8;
tNFC_RF_PB_PARAMS* p_pb;
tNFC_RF_LF_PARAMS* p_lf;
tNFC_RF_PF_PARAMS* p_pf;
tNFC_RF_PISO15693_PARAMS* p_i93;
tNFC_RF_ACM_P_PARAMS* acm_p;
uint8_t mpl_idx = 0;
uint8_t gb_idx = 0, mpl;
uint8_t plen;
plen = len = *p++;
p_start = p;
memset(&p_param->param, 0, sizeof(tNFC_RF_TECH_PARAMU));
if (NCI_DISCOVERY_TYPE_POLL_A == p_param->mode ||
(NCI_DISCOVERY_TYPE_POLL_A_ACTIVE == p_param->mode &&
NFC_GetNCIVersion() != NCI_VERSION_2_0)) {
p_pa = &p_param->param.pa;
/*
SENS_RES Response 2 bytes Defined in [DIGPROT] Available after Technology
Detection
NFCID1 length 1 byte Length of NFCID1 Available after Collision Resolution
NFCID1 4, 7, or 10 bytes Defined in [DIGPROT]Available after Collision
Resolution
SEL_RES Response 1 byte Defined in [DIGPROT]Available after Collision
Resolution
HRx Length 1 Octets Length of HRx Parameters collected from the response to
the T1T RID command.
HRx 0 or 2 Octets If present, the first byte SHALL contain HR0 and the second
byte SHALL contain HR1 as defined in [DIGITAL].
*/
if (plen < 3) {
goto invalid_packet;
}
plen -= 3;
STREAM_TO_ARRAY(p_pa->sens_res, p, 2);
p_pa->nfcid1_len = *p++;
if (p_pa->nfcid1_len > NCI_NFCID1_MAX_LEN)
p_pa->nfcid1_len = NCI_NFCID1_MAX_LEN;
if (plen < p_pa->nfcid1_len + 1) {
goto invalid_packet;
}
plen -= (p_pa->nfcid1_len + 1);
STREAM_TO_ARRAY(p_pa->nfcid1, p, p_pa->nfcid1_len);
u8 = *p++;
if (u8) {
if (plen < 1) {
goto invalid_packet;
}
plen--;
p_pa->sel_rsp = *p++;
}
if (len ==
(7 + p_pa->nfcid1_len + u8)) /* 2(sens_res) + 1(len) +
p_pa->nfcid1_len + 1(len) + u8 + hr
(1:len + 2) */
{
p_pa->hr_len = *p++;
if (p_pa->hr_len == NCI_T1T_HR_LEN) {
p_pa->hr[0] = *p++;
p_pa->hr[1] = *p;
}
}
} else if (NCI_DISCOVERY_TYPE_POLL_B == p_param->mode) {
/*
SENSB_RES Response length (n) 1 byte Length of SENSB_RES Response (Byte 2 -
Byte 12 or 13)Available after Technology Detection
SENSB_RES Response Byte 2 - Byte 12 or 13 11 or 12 bytes Defined in [DIGPROT]
Available after Technology Detection
*/
p_pb = &p_param->param.pb;
if (plen < 1) {
goto invalid_packet;
}
plen--;
p_pb->sensb_res_len = *p++;
if (p_pb->sensb_res_len > NCI_MAX_SENSB_RES_LEN)
p_pb->sensb_res_len = NCI_MAX_SENSB_RES_LEN;
if (plen < p_pb->sensb_res_len) {
goto invalid_packet;
}
plen -= p_pb->sensb_res_len;
STREAM_TO_ARRAY(p_pb->sensb_res, p, p_pb->sensb_res_len);
memcpy(p_pb->nfcid0, p_pb->sensb_res, NFC_NFCID0_MAX_LEN);
} else if (NCI_DISCOVERY_TYPE_POLL_F == p_param->mode ||
(NCI_DISCOVERY_TYPE_POLL_F_ACTIVE == p_param->mode &&
NFC_GetNCIVersion() != NCI_VERSION_2_0)) {
/*
Bit Rate 1 byte 1 212 kbps/2 424 kbps/0 and 3 to 255 RFU
SENSF_RES Response length.(n) 1 byte Length of SENSF_RES (Byte 2 - Byte 17 or
19).Available after Technology Detection
SENSF_RES Response Byte 2 - Byte 17 or 19 n bytes Defined in [DIGPROT]
Available after Technology Detection
*/
p_pf = &p_param->param.pf;
if (plen < 2) {
goto invalid_packet;
}
plen -= 2;
p_pf->bit_rate = *p++;
p_pf->sensf_res_len = *p++;
if (p_pf->sensf_res_len > NCI_MAX_SENSF_RES_LEN)
p_pf->sensf_res_len = NCI_MAX_SENSF_RES_LEN;
if (plen < p_pf->sensf_res_len) {
goto invalid_packet;
}
plen -= p_pf->sensf_res_len;
STREAM_TO_ARRAY(p_pf->sensf_res, p, p_pf->sensf_res_len);
if (p_pf->sensf_res_len < NCI_MRTI_UPDATE_INDEX + 1) {
goto invalid_packet;
}
memcpy(p_pf->nfcid2, p_pf->sensf_res, NCI_NFCID2_LEN);
p_pf->mrti_check = p_pf->sensf_res[NCI_MRTI_CHECK_INDEX];
p_pf->mrti_update = p_pf->sensf_res[NCI_MRTI_UPDATE_INDEX];
} else if (NCI_DISCOVERY_TYPE_LISTEN_F == p_param->mode ||
(NCI_DISCOVERY_TYPE_LISTEN_F_ACTIVE == p_param->mode &&
NFC_GetNCIVersion() != NCI_VERSION_2_0)) {
p_lf = &p_param->param.lf;
if (plen < 1) {
goto invalid_packet;
}
plen--;
u8 = *p++;
if (u8) {
if (plen < NCI_NFCID2_LEN) {
goto invalid_packet;
}
plen -= NCI_NFCID2_LEN;
STREAM_TO_ARRAY(p_lf->nfcid2, p, NCI_NFCID2_LEN);
}
} else if (NCI_DISCOVERY_TYPE_POLL_V == p_param->mode) {
p_i93 = &p_param->param.pi93;
if (plen < 2) {
goto invalid_packet;
}
plen -= 2;
p_i93->flag = *p++;
p_i93->dsfid = *p++;
if (plen < NFC_ISO15693_UID_LEN) {
goto invalid_packet;
}
plen -= NFC_ISO15693_UID_LEN;
STREAM_TO_ARRAY(p_i93->uid, p, NFC_ISO15693_UID_LEN);
} else if (NCI_DISCOVERY_TYPE_POLL_KOVIO == p_param->mode) {
p_param->param.pk.uid_len = len;
if (p_param->param.pk.uid_len > NFC_KOVIO_MAX_LEN) {
LOG(ERROR) << StringPrintf("Kovio UID len:0x%x exceeds max(0x%x)",
p_param->param.pk.uid_len, NFC_KOVIO_MAX_LEN);
p_param->param.pk.uid_len = NFC_KOVIO_MAX_LEN;
}
STREAM_TO_ARRAY(p_param->param.pk.uid, p, p_param->param.pk.uid_len);
} else if (NCI_DISCOVERY_TYPE_POLL_ACTIVE == p_param->mode) {
acm_p = &p_param->param.acm_p;
if (plen < 1) {
goto invalid_packet;
}
plen--;
acm_p->atr_res_len = *p++;
if (acm_p->atr_res_len > 0) {
if (acm_p->atr_res_len > NFC_MAX_ATS_LEN)
acm_p->atr_res_len = NFC_MAX_ATS_LEN;
if (plen < acm_p->atr_res_len) {
goto invalid_packet;
}
plen -= acm_p->atr_res_len;
STREAM_TO_ARRAY(acm_p->atr_res, p, acm_p->atr_res_len);
/* ATR_RES
Byte 3~12 Byte 13 Byte 14 Byte 15 Byte 16 Byte 17 Byte 18~18+n
NFCID3T DIDT BST BRT TO PPT [GT0 ... GTn] */
mpl_idx = 14;
gb_idx = NCI_P_GEN_BYTE_INDEX;
if (acm_p->atr_res_len < mpl_idx + 1) {
goto invalid_packet;
}
acm_p->waiting_time = acm_p->atr_res[NCI_L_NFC_DEP_TO_INDEX] & 0x0F;
mpl = ((acm_p->atr_res[mpl_idx]) >> 4) & 0x03;
acm_p->max_payload_size = nfc_mpl_code_to_size[mpl];
if (acm_p->atr_res_len > gb_idx) {
acm_p->gen_bytes_len = acm_p->atr_res_len - gb_idx;
if (acm_p->gen_bytes_len > NFC_MAX_GEN_BYTES_LEN)
acm_p->gen_bytes_len = NFC_MAX_GEN_BYTES_LEN;
memcpy(acm_p->gen_bytes, &acm_p->atr_res[gb_idx], acm_p->gen_bytes_len);
}
}
} else if (NCI_DISCOVERY_TYPE_LISTEN_ACTIVE == p_param->mode) {
acm_p = &p_param->param.acm_p;
if (plen < 1) {
goto invalid_packet;
}
plen--;
acm_p->atr_res_len = *p++;
if (acm_p->atr_res_len > 0) {
if (acm_p->atr_res_len > NFC_MAX_ATS_LEN)
acm_p->atr_res_len = NFC_MAX_ATS_LEN;
if (plen < acm_p->atr_res_len) {
goto invalid_packet;
}
plen -= acm_p->atr_res_len;
STREAM_TO_ARRAY(acm_p->atr_res, p, acm_p->atr_res_len);
/* ATR_REQ
Byte 3~12 Byte 13 Byte 14 Byte 15 Byte 16 Byte 17~17+n
NFCID3I DIDI BSI BRI PPI [GI0 ... GIn] */
mpl_idx = 13;
gb_idx = NCI_L_GEN_BYTE_INDEX;
if (acm_p->atr_res_len < mpl_idx + 1) {
goto invalid_packet;
}
mpl = ((acm_p->atr_res[mpl_idx]) >> 4) & 0x03;
acm_p->max_payload_size = nfc_mpl_code_to_size[mpl];
if (acm_p->atr_res_len > gb_idx) {
acm_p->gen_bytes_len = acm_p->atr_res_len - gb_idx;
if (acm_p->gen_bytes_len > NFC_MAX_GEN_BYTES_LEN)
acm_p->gen_bytes_len = NFC_MAX_GEN_BYTES_LEN;
memcpy(acm_p->gen_bytes, &acm_p->atr_res[gb_idx], acm_p->gen_bytes_len);
}
}
}
invalid_packet:
return (p_start + len);
}
/*******************************************************************************
**
** Function nfc_ncif_proc_discover_ntf
**
** Description This function is called to process discover notification
**
** Returns void
**
*******************************************************************************/
void nfc_ncif_proc_discover_ntf(uint8_t* p, uint16_t plen) {
tNFC_DISCOVER evt_data;
if (nfc_cb.p_discv_cback) {
// validate packet length should be larger than (NCI header + rf_disc_id +
// protocol + mode + length of rf parameters).
if (plen < NCI_MSG_HDR_SIZE + 4) {
evt_data.status = NCI_STATUS_FAILED;
goto invalid_packet;
}
plen -= (NCI_MSG_HDR_SIZE + 4);
p += NCI_MSG_HDR_SIZE;
evt_data.status = NCI_STATUS_OK;
evt_data.result.rf_disc_id = *p++;
evt_data.result.protocol = *p++;
/* fill in tNFC_RESULT_DEVT */
evt_data.result.rf_tech_param.mode = *p++;
// validate packet length should be larger than (rf_tech_param + ntf_type)
if (plen < *p + 1) {
evt_data.status = NCI_STATUS_FAILED;
goto invalid_packet;
}
plen -= (*p + 1);
p = nfc_ncif_decode_rf_params(&evt_data.result.rf_tech_param, p);
evt_data.result.more = *p++;
invalid_packet:
(*nfc_cb.p_discv_cback)(NFC_RESULT_DEVT, &evt_data);
}
}
/*******************************************************************************
**
** Function nfc_ncif_proc_isodep_nak_presence_check_status
**
** Description This function is called to handle response and notification
** for presence check nak command
**
** Returns void
**
*******************************************************************************/
void nfc_ncif_proc_isodep_nak_presence_check_status(uint8_t status,
bool is_ntf) {
rw_t4t_handle_isodep_nak_rsp(status, is_ntf);
}
/*******************************************************************************
**
** Function nfc_ncif_proc_activate
**
** Description This function is called to process de-activate
** response and notification
**
** Returns void
**
*******************************************************************************/
void nfc_ncif_proc_activate(uint8_t* p, uint8_t len) {
tNFC_DISCOVER evt_data;
tNFC_INTF_PARAMS* p_intf = &evt_data.activate.intf_param;
tNFC_INTF_PA_ISO_DEP* p_pa_iso;
tNFC_INTF_LB_ISO_DEP* p_lb_iso;
tNFC_INTF_PB_ISO_DEP* p_pb_iso;
#if (NFC_RW_ONLY == FALSE)
tNFC_INTF_PA_NFC_DEP* p_pa_nfc;
int mpl_idx = 0;
uint8_t gb_idx = 0, mpl;
#endif
uint8_t t0;
tNCI_DISCOVERY_TYPE mode;
tNFC_CONN_CB* p_cb = &nfc_cb.conn_cb[NFC_RF_CONN_ID];
uint8_t *pp, len_act;
uint8_t buff_size, num_buff;
tNFC_RF_PA_PARAMS* p_pa;
uint8_t plen = len, pplen = 0;
nfc_set_state(NFC_STATE_OPEN);
memset(p_intf, 0, sizeof(tNFC_INTF_PARAMS));
// validate packet length should be larger than (rf_disc_id + type +
// protocol + mode + buff_size + num_buff + length of rf parameters).
if (plen < 7) {
evt_data.status = NCI_STATUS_FAILED;
goto invalid_packet;
}
plen -= 7;
evt_data.activate.rf_disc_id = *p++;
p_intf->type = *p++;
evt_data.activate.protocol = *p++;
if (evt_data.activate.protocol == NCI_PROTOCOL_18092_ACTIVE)
evt_data.activate.protocol = NCI_PROTOCOL_NFC_DEP;
evt_data.activate.rf_tech_param.mode = *p++;
buff_size = *p++;
num_buff = *p++;
/* fill in tNFC_activate_DEVT */
// validate remaining packet length should be larger than (rf_tech_param +
// data_mode + tx_bitrate + rx_bitrte + len_act).
if (plen < *p + 4) {
evt_data.status = NCI_STATUS_FAILED;
goto invalid_packet;
}
plen -= (*p + 4);
p = nfc_ncif_decode_rf_params(&evt_data.activate.rf_tech_param, p);
evt_data.activate.data_mode = *p++;
evt_data.activate.tx_bitrate = *p++;
evt_data.activate.rx_bitrate = *p++;
mode = evt_data.activate.rf_tech_param.mode;
len_act = *p++;
DLOG_IF(INFO, nfc_debug_enabled) << StringPrintf(
"nfc_ncif_proc_activate:%d %d, mode:0x%02x", len, len_act, mode);
/* just in case the interface reports activation parameters not defined in the
* NCI spec */
p_intf->intf_param.frame.param_len = len_act;
if (p_intf->intf_param.frame.param_len > NFC_MAX_RAW_PARAMS)
p_intf->intf_param.frame.param_len = NFC_MAX_RAW_PARAMS;
pp = p;
if (plen < p_intf->intf_param.frame.param_len) {
evt_data.status = NCI_STATUS_FAILED;
goto invalid_packet;
}
STREAM_TO_ARRAY(p_intf->intf_param.frame.param, pp,
p_intf->intf_param.frame.param_len);
if (evt_data.activate.intf_param.type == NCI_INTERFACE_ISO_DEP) {
/* Make max payload of NCI aligned to max payload of ISO-DEP for better
* performance */
if (buff_size > NCI_ISO_DEP_MAX_INFO) buff_size = NCI_ISO_DEP_MAX_INFO;
switch (mode) {
case NCI_DISCOVERY_TYPE_POLL_A:
p_pa_iso = &p_intf->intf_param.pa_iso;
if (plen < 1) {
evt_data.status = NCI_STATUS_FAILED;
goto invalid_packet;
}
plen--;
p_pa_iso->ats_res_len = *p++;
if (p_pa_iso->ats_res_len == 0) break;
if (p_pa_iso->ats_res_len > NFC_MAX_ATS_LEN)
p_pa_iso->ats_res_len = NFC_MAX_ATS_LEN;
if (plen < p_pa_iso->ats_res_len) {
evt_data.status = NCI_STATUS_FAILED;
goto invalid_packet;
}
plen -= p_pa_iso->ats_res_len;
STREAM_TO_ARRAY(p_pa_iso->ats_res, p, p_pa_iso->ats_res_len);
pplen = p_pa_iso->ats_res_len;
pp = &p_pa_iso->ats_res[NCI_ATS_T0_INDEX];
t0 = p_pa_iso->ats_res[NCI_ATS_T0_INDEX];
pp++; /* T0 */
pplen--;
if (t0 & NCI_ATS_TA_MASK) {
if (pplen < 1) {
evt_data.status = NCI_STATUS_FAILED;
goto invalid_packet;
}
pplen--;
pp++; /* TA */
}
if (t0 & NCI_ATS_TB_MASK) {
/* FWI (Frame Waiting time Integer) & SPGI (Start-up Frame Guard time
* Integer) */
if (pplen < 1) {
evt_data.status = NCI_STATUS_FAILED;
goto invalid_packet;
}
pplen--;
p_pa_iso->fwi = (((*pp) >> 4) & 0x0F);
p_pa_iso->sfgi = ((*pp) & 0x0F);
pp++; /* TB */
}
if (t0 & NCI_ATS_TC_MASK) {
if (pplen < 1) {
evt_data.status = NCI_STATUS_FAILED;
goto invalid_packet;
}
pplen--;
p_pa_iso->nad_used = ((*pp) & 0x01);
pp++; /* TC */
}
p_pa_iso->his_byte_len =
(uint8_t)(p_pa_iso->ats_res_len - (pp - p_pa_iso->ats_res));
if (p_pa_iso->his_byte_len > NFC_MAX_HIS_BYTES_LEN)
p_pa_iso->his_byte_len = NFC_MAX_HIS_BYTES_LEN;
if (pplen < p_pa_iso->his_byte_len) {
evt_data.status = NCI_STATUS_FAILED;
goto invalid_packet;
}
memcpy(p_pa_iso->his_byte, pp, p_pa_iso->his_byte_len);
break;
case NCI_DISCOVERY_TYPE_LISTEN_A:
if (plen < 1) {
evt_data.status = NCI_STATUS_FAILED;
goto invalid_packet;
}
plen--;
p_intf->intf_param.la_iso.rats = *p++;
gettimeofday(&timer_start, nullptr);
break;
case NCI_DISCOVERY_TYPE_POLL_B:
/* ATTRIB RSP
Byte 1 Byte 2 ~ 2+n-1
MBLI/DID Higher layer - Response
*/
p_pb_iso = &p_intf->intf_param.pb_iso;
if (plen < 1) {
evt_data.status = NCI_STATUS_FAILED;
goto invalid_packet;
}
plen--;
p_pb_iso->attrib_res_len = *p++;
if (p_pb_iso->attrib_res_len == 0) break;
if (p_pb_iso->attrib_res_len > NFC_MAX_ATTRIB_LEN)
p_pb_iso->attrib_res_len = NFC_MAX_ATTRIB_LEN;
if (plen < p_pb_iso->attrib_res_len) {
evt_data.status = NCI_STATUS_FAILED;
goto invalid_packet;
}
plen -= p_pb_iso->attrib_res_len;
STREAM_TO_ARRAY(p_pb_iso->attrib_res, p, p_pb_iso->attrib_res_len);
p_pb_iso->mbli = (p_pb_iso->attrib_res[0]) >> 4;
if (p_pb_iso->attrib_res_len > NFC_PB_ATTRIB_REQ_FIXED_BYTES) {
p_pb_iso->hi_info_len =
p_pb_iso->attrib_res_len - NFC_PB_ATTRIB_REQ_FIXED_BYTES;
if (p_pb_iso->hi_info_len > NFC_MAX_GEN_BYTES_LEN)
p_pb_iso->hi_info_len = NFC_MAX_GEN_BYTES_LEN;
memcpy(p_pb_iso->hi_info,
&p_pb_iso->attrib_res[NFC_PB_ATTRIB_REQ_FIXED_BYTES],
p_pb_iso->hi_info_len);
}
break;
case NCI_DISCOVERY_TYPE_LISTEN_B:
/* ATTRIB CMD
Byte 2~5 Byte 6 Byte 7 Byte 8 Byte 9 Byte 10 ~ 10+k-1
NFCID0 Param 1 Param 2 Param 3 Param 4 Higher layer - INF
*/
p_lb_iso = &p_intf->intf_param.lb_iso;
if (plen < 1) {
evt_data.status = NCI_STATUS_FAILED;
goto invalid_packet;
}
plen--;
p_lb_iso->attrib_req_len = *p++;
if (p_lb_iso->attrib_req_len == 0) break;
if (p_lb_iso->attrib_req_len > NFC_MAX_ATTRIB_LEN)
p_lb_iso->attrib_req_len = NFC_MAX_ATTRIB_LEN;
if (plen < p_lb_iso->attrib_req_len) {
evt_data.status = NCI_STATUS_FAILED;
goto invalid_packet;
}
plen -= p_lb_iso->attrib_req_len;
STREAM_TO_ARRAY(p_lb_iso->attrib_req, p, p_lb_iso->attrib_req_len);
if (p_lb_iso->attrib_req_len < NFC_NFCID0_MAX_LEN) {
evt_data.status = NCI_STATUS_FAILED;
goto invalid_packet;
}
memcpy(p_lb_iso->nfcid0, p_lb_iso->attrib_req, NFC_NFCID0_MAX_LEN);
if (p_lb_iso->attrib_req_len > NFC_LB_ATTRIB_REQ_FIXED_BYTES) {
p_lb_iso->hi_info_len =
p_lb_iso->attrib_req_len - NFC_LB_ATTRIB_REQ_FIXED_BYTES;
if (p_lb_iso->hi_info_len > NFC_MAX_GEN_BYTES_LEN)
p_lb_iso->hi_info_len = NFC_MAX_GEN_BYTES_LEN;
memcpy(p_lb_iso->hi_info,
&p_lb_iso->attrib_req[NFC_LB_ATTRIB_REQ_FIXED_BYTES],
p_lb_iso->hi_info_len);
}
gettimeofday(&timer_start, nullptr);
break;
}
}
#if (NFC_RW_ONLY == FALSE)
else if (evt_data.activate.intf_param.type == NCI_INTERFACE_NFC_DEP) {
/* Make max payload of NCI aligned to max payload of NFC-DEP for better
* performance */
if (buff_size > NCI_NFC_DEP_MAX_DATA) buff_size = NCI_NFC_DEP_MAX_DATA;
p_pa_nfc = &p_intf->intf_param.pa_nfc;
/* Active mode, no info in activation parameters (NCI 2.0) */
if ((NFC_GetNCIVersion() == NCI_VERSION_2_0) &&
((mode == NCI_DISCOVERY_TYPE_POLL_ACTIVE) ||
(mode == NCI_DISCOVERY_TYPE_LISTEN_ACTIVE))) {
p_pa_nfc->atr_res_len =
evt_data.activate.rf_tech_param.param.acm_p.atr_res_len;
} else {
if (plen < 1) {
evt_data.status = NCI_STATUS_FAILED;
goto invalid_packet;
}
plen--;
p_pa_nfc->atr_res_len = *p++;
}
if (p_pa_nfc->atr_res_len > 0) {
if (p_pa_nfc->atr_res_len > NFC_MAX_ATS_LEN)
p_pa_nfc->atr_res_len = NFC_MAX_ATS_LEN;
if ((NFC_GetNCIVersion() == NCI_VERSION_2_0) &&
((mode == NCI_DISCOVERY_TYPE_POLL_ACTIVE) ||
(mode == NCI_DISCOVERY_TYPE_LISTEN_ACTIVE))) {
/* NCI 2.0 : ATR_RES is included in RF technology parameters in active mode */
memcpy(p_pa_nfc->atr_res,
evt_data.activate.rf_tech_param.param.acm_p.atr_res,
p_pa_nfc->atr_res_len);
} else {
if (plen < p_pa_nfc->atr_res_len) {
evt_data.status = NCI_STATUS_FAILED;
goto invalid_packet;
}
plen -= p_pa_nfc->atr_res_len;
STREAM_TO_ARRAY(p_pa_nfc->atr_res, p, p_pa_nfc->atr_res_len);
}
if ((mode == NCI_DISCOVERY_TYPE_POLL_A) ||
(mode == NCI_DISCOVERY_TYPE_POLL_F) ||
((mode == NCI_DISCOVERY_TYPE_POLL_A_ACTIVE ||
mode == NCI_DISCOVERY_TYPE_POLL_F_ACTIVE) &&
NFC_GetNCIVersion() != NCI_VERSION_2_0) ||
(NFC_GetNCIVersion() == NCI_VERSION_2_0 &&
mode == NCI_DISCOVERY_TYPE_POLL_ACTIVE)) {
/* ATR_RES
Byte 3~12 Byte 13 Byte 14 Byte 15 Byte 16 Byte 17 Byte 18~18+n
NFCID3T DIDT BST BRT TO PPT [GT0 ... GTn] */
mpl_idx = 14;
gb_idx = NCI_P_GEN_BYTE_INDEX;
if (p_pa_nfc->atr_res_len < NCI_L_NFC_DEP_TO_INDEX + 1) {
evt_data.status = NCI_STATUS_FAILED;
goto invalid_packet;
}
p_pa_nfc->waiting_time =
p_pa_nfc->atr_res[NCI_L_NFC_DEP_TO_INDEX] & 0x0F;
} else if ((mode == NCI_DISCOVERY_TYPE_LISTEN_A) ||
(mode == NCI_DISCOVERY_TYPE_LISTEN_F) ||
(NFC_GetNCIVersion() != NCI_VERSION_2_0 &&
(mode == NCI_DISCOVERY_TYPE_LISTEN_A_ACTIVE ||
mode == NCI_DISCOVERY_TYPE_LISTEN_F_ACTIVE)) ||
(NFC_GetNCIVersion() == NCI_VERSION_2_0 &&
mode == NCI_DISCOVERY_TYPE_LISTEN_ACTIVE)) {
/* ATR_REQ
Byte 3~12 Byte 13 Byte 14 Byte 15 Byte 16 Byte 17~17+n
NFCID3I DIDI BSI BRI PPI [GI0 ... GIn] */
mpl_idx = 13;
gb_idx = NCI_L_GEN_BYTE_INDEX;
}
if (p_pa_nfc->atr_res_len < mpl_idx + 1) {
evt_data.status = NCI_STATUS_FAILED;
goto invalid_packet;
}
mpl = ((p_pa_nfc->atr_res[mpl_idx]) >> 4) & 0x03;
p_pa_nfc->max_payload_size = nfc_mpl_code_to_size[mpl];
if (p_pa_nfc->atr_res_len > gb_idx) {
p_pa_nfc->gen_bytes_len = p_pa_nfc->atr_res_len - gb_idx;
if (p_pa_nfc->gen_bytes_len > NFC_MAX_GEN_BYTES_LEN)
p_pa_nfc->gen_bytes_len = NFC_MAX_GEN_BYTES_LEN;
memcpy(p_pa_nfc->gen_bytes, &p_pa_nfc->atr_res[gb_idx],
p_pa_nfc->gen_bytes_len);
}
}
}
#endif
else if ((evt_data.activate.intf_param.type == NCI_INTERFACE_FRAME) &&
(evt_data.activate.protocol == NCI_PROTOCOL_T1T)) {
p_pa = &evt_data.activate.rf_tech_param.param.pa;
if ((len_act == NCI_T1T_HR_LEN) && (p_pa->hr_len == 0)) {
p_pa->hr_len = NCI_T1T_HR_LEN;
if (plen < 2) {
evt_data.status = NCI_STATUS_FAILED;
goto invalid_packet;
}
plen -= 2;
p_pa->hr[0] = *p++;
p_pa->hr[1] = *p++;
}
}
p_cb->act_protocol = evt_data.activate.protocol;
p_cb->act_interface = evt_data.activate.intf_param.type;
p_cb->buff_size = buff_size;
p_cb->num_buff = num_buff;
p_cb->init_credits = num_buff;
invalid_packet:
if (nfc_cb.p_discv_cback) {
(*nfc_cb.p_discv_cback)(NFC_ACTIVATE_DEVT, &evt_data);
}
}
/*******************************************************************************
**
** Function nfc_ncif_proc_deactivate
**
** Description This function is called to process de-activate
** response and notification
**
** Returns void
**
*******************************************************************************/
void nfc_ncif_proc_deactivate(uint8_t status, uint8_t deact_type, bool is_ntf) {
tNFC_DISCOVER evt_data;
tNFC_CONN_CB* p_cb = &nfc_cb.conn_cb[NFC_RF_CONN_ID];
void* p_data;
nfc_set_state(NFC_STATE_IDLE);
evt_data.deactivate.status = status;
evt_data.deactivate.type = deact_type;
evt_data.deactivate.is_ntf = is_ntf;
if (NFC_GetNCIVersion() == NCI_VERSION_2_0) {
evt_data.deactivate.reason = nfc_cb.deact_reason;
}
while ((p_data = GKI_dequeue(&p_cb->rx_q)) != nullptr) {
GKI_freebuf(p_data);
}
while ((p_data = GKI_dequeue(&p_cb->tx_q)) != nullptr) {
GKI_freebuf(p_data);
}
if (p_cb->p_cback) {
tNFC_CONN nfc_conn;
nfc_conn.deactivate = evt_data.deactivate;
(*p_cb->p_cback)(NFC_RF_CONN_ID, NFC_DEACTIVATE_CEVT, &nfc_conn);
}
if (nfc_cb.p_discv_cback) {
(*nfc_cb.p_discv_cback)(NFC_DEACTIVATE_DEVT, &evt_data);
}
// clear previous stored tick count if not comsumed
if (timer_start.tv_sec != 0 || timer_start.tv_usec != 0) {
memset(&timer_start, 0, sizeof(timer_start));
}
}
/*******************************************************************************
**
** Function nfc_ncif_proc_ee_action
**
** Description This function is called to process NFCEE ACTION NTF
**
** Returns void
**
*******************************************************************************/
#if (NFC_NFCEE_INCLUDED == TRUE && NFC_RW_ONLY == FALSE)
void nfc_ncif_proc_ee_action(uint8_t* p, uint16_t plen) {
tNFC_EE_ACTION_REVT evt_data;
tNFC_RESPONSE_CBACK* p_cback = nfc_cb.p_resp_cback;
uint8_t data_len, ulen, tag, *p_data;
uint8_t max_len;
if (p_cback) {
memset(&evt_data.act_data, 0, sizeof(tNFC_ACTION_DATA));
evt_data.status = NFC_STATUS_OK;
evt_data.nfcee_id = *p++;
evt_data.act_data.trigger = *p++;
data_len = *p++;
if (plen >= 3) plen -= 3;
if (data_len > plen) data_len = (uint8_t)plen;
switch (evt_data.act_data.trigger) {
case NCI_EE_TRIG_7816_SELECT:
if (data_len > NFC_MAX_AID_LEN) data_len = NFC_MAX_AID_LEN;
evt_data.act_data.param.aid.len_aid = data_len;
STREAM_TO_ARRAY(evt_data.act_data.param.aid.aid, p, data_len);
break;
case NCI_EE_TRIG_RF_PROTOCOL:
evt_data.act_data.param.protocol = *p++;
break;
case NCI_EE_TRIG_RF_TECHNOLOGY:
evt_data.act_data.param.technology = *p++;
break;
case NCI_EE_TRIG_APP_INIT:
while (data_len > NFC_TL_SIZE) {
data_len -= NFC_TL_SIZE;
tag = *p++;
ulen = *p++;
if (ulen > data_len) ulen = data_len;
p_data = nullptr;
max_len = ulen;
switch (tag) {
case NCI_EE_ACT_TAG_AID: /* AID */
if (max_len > NFC_MAX_AID_LEN) max_len = NFC_MAX_AID_LEN;
evt_data.act_data.param.app_init.len_aid = max_len;
p_data = evt_data.act_data.param.app_init.aid;
break;
case NCI_EE_ACT_TAG_DATA: /* hex data for app */
if (max_len > NFC_MAX_APP_DATA_LEN)
max_len = NFC_MAX_APP_DATA_LEN;
evt_data.act_data.param.app_init.len_data = max_len;
p_data = evt_data.act_data.param.app_init.data;
break;
}
if (p_data) {
STREAM_TO_ARRAY(p_data, p, max_len);
}
data_len -= ulen;
}
break;
}
tNFC_RESPONSE nfc_response;
nfc_response.ee_action = evt_data;
(*p_cback)(NFC_EE_ACTION_REVT, &nfc_response);
}
}
/*******************************************************************************
**
** Function nfc_ncif_proc_ee_discover_req
**
** Description This function is called to process NFCEE DISCOVER REQ NTF
**
** Returns void
**
*******************************************************************************/
void nfc_ncif_proc_ee_discover_req(uint8_t* p, uint16_t plen) {
tNFC_RESPONSE_CBACK* p_cback = nfc_cb.p_resp_cback;
tNFC_EE_DISCOVER_REQ_REVT ee_disc_req;
tNFC_EE_DISCOVER_INFO* p_info;
uint8_t u8;
DLOG_IF(INFO, nfc_debug_enabled)
<< StringPrintf("nfc_ncif_proc_ee_discover_req %d len:%d", *p, plen);
if (*p > NFC_MAX_EE_DISC_ENTRIES) {
android_errorWriteLog(0x534e4554, "122361874");
LOG(ERROR) << __func__ << "Exceed NFC_MAX_EE_DISC_ENTRIES";
return;
}
if (p_cback) {
u8 = *p;
ee_disc_req.status = NFC_STATUS_OK;
ee_disc_req.num_info = *p++;
p_info = ee_disc_req.info;
if (plen) plen--;
while ((u8 > 0) && (plen >= NFC_EE_DISCOVER_ENTRY_LEN)) {
p_info->op = *p++; /* T */
if (*p != NFC_EE_DISCOVER_INFO_LEN) /* L */
{
DLOG_IF(INFO, nfc_debug_enabled)
<< StringPrintf("bad entry len:%d", *p);
return;
}
p++;
/* V */
p_info->nfcee_id = *p++;
p_info->tech_n_mode = *p++;
p_info->protocol = *p++;
u8--;
plen -= NFC_EE_DISCOVER_ENTRY_LEN;
p_info++;
}
tNFC_RESPONSE nfc_response;
nfc_response.ee_discover_req = ee_disc_req;
(*p_cback)(NFC_EE_DISCOVER_REQ_REVT, &nfc_response);
}
}
/*******************************************************************************
**
** Function nfc_ncif_proc_get_routing
**
** Description This function is called to process get routing notification
**
** Returns void
**
*******************************************************************************/
void nfc_ncif_proc_get_routing(uint8_t* p, uint8_t len) {
tNFC_GET_ROUTING_REVT evt_data;
uint8_t more, num_entries, xx, *pn;
tNFC_STATUS status = NFC_STATUS_CONTINUE;
if (len >= 2 && nfc_cb.p_resp_cback) {
more = *p++;
num_entries = *p++;
if (num_entries == 0) return;
len -= 2;
if (len < 2) {
LOG(ERROR) << StringPrintf("Invalid len=%d", len);
return;
}
for (xx = 0; xx < num_entries; xx++) {
if ((more == false) && (xx == (num_entries - 1))) status = NFC_STATUS_OK;
evt_data.status = (tNFC_STATUS)status;
if (len >= 2)
len -= 2;
else
return;
evt_data.qualifier_type = *p++;
evt_data.num_tlvs = 1;
evt_data.tlv_size = *p++;
if (evt_data.tlv_size > NFC_MAX_EE_TLV_SIZE) {
android_errorWriteLog(0x534e4554, "117554809");
LOG(ERROR) << __func__ << "Invalid data format";
return;
}
if (evt_data.tlv_size > len) {
LOG(ERROR) << StringPrintf("Invalid evt_data.tlv_size");
return;
} else
len -= evt_data.tlv_size;
pn = evt_data.param_tlvs;
STREAM_TO_ARRAY(pn, p, evt_data.tlv_size);
tNFC_RESPONSE nfc_response;
nfc_response.get_routing = evt_data;
(*nfc_cb.p_resp_cback)(NFC_GET_ROUTING_REVT, &nfc_response);
}
}
}
#endif
/*******************************************************************************
**
** Function nfc_ncif_proc_conn_create_rsp
**
** Description This function is called to process connection create
** response
**
** Returns void
**
*******************************************************************************/
void nfc_ncif_proc_conn_create_rsp(uint8_t* p,
__attribute__((unused)) uint16_t plen,
uint8_t dest_type) {
tNFC_CONN_CB* p_cb;
tNFC_STATUS status;
tNFC_CONN_CBACK* p_cback;
tNFC_CONN evt_data;
uint8_t conn_id;
/* find the pending connection control block */
p_cb = nfc_find_conn_cb_by_conn_id(NFC_PEND_CONN_ID);
if (p_cb) {
p += NCI_MSG_HDR_SIZE;
status = *p++;
p_cb->buff_size = *p++;
p_cb->num_buff = p_cb->init_credits = *p++;
conn_id = *p++;
if (conn_id > NFC_MAX_CONN_ID) {
status = NCI_STATUS_FAILED;
conn_id = NFC_ILLEGAL_CONN_ID;
}
evt_data.conn_create.status = status;
evt_data.conn_create.dest_type = dest_type;
evt_data.conn_create.id = p_cb->id;
evt_data.conn_create.buff_size = p_cb->buff_size;
evt_data.conn_create.num_buffs = p_cb->num_buff;
p_cback = p_cb->p_cback;
if (status == NCI_STATUS_OK) {
nfc_set_conn_id(p_cb, conn_id);
} else {
nfc_free_conn_cb(p_cb);
}
if (p_cback) (*p_cback)(conn_id, NFC_CONN_CREATE_CEVT, &evt_data);
}
}
/*******************************************************************************
**
** Function nfc_ncif_report_conn_close_evt
**
** Description This function is called to report connection close event
**
** Returns void
**
*******************************************************************************/
void nfc_ncif_report_conn_close_evt(uint8_t conn_id, tNFC_STATUS status) {
tNFC_CONN evt_data;
tNFC_CONN_CBACK* p_cback;
tNFC_CONN_CB* p_cb;
p_cb = nfc_find_conn_cb_by_conn_id(conn_id);
if (p_cb) {
p_cback = p_cb->p_cback;
nfc_free_conn_cb(p_cb);
evt_data.status = status;
if (p_cback) (*p_cback)(conn_id, NFC_CONN_CLOSE_CEVT, &evt_data);
}
}
/*******************************************************************************
**
** Function nfc_ncif_proc_reset_rsp
**
** Description This function is called to process reset
** response/notification
**
** Returns void
**
*******************************************************************************/
void nfc_ncif_proc_reset_rsp(uint8_t* p, bool is_ntf) {
uint8_t* p_len = p - 1;
uint8_t status = NCI_STATUS_FAILED;
uint8_t wait_for_ntf = FALSE;
status = *p_len > 0 ? *p++ : NCI_STATUS_FAILED;
if (*p_len > 2 && is_ntf) {
LOG(ERROR) << StringPrintf("reset notification!!:0x%x ", status);
/* clean up, if the state is OPEN
* FW does not report reset ntf right now */
if (status == NCI2_0_RESET_TRIGGER_TYPE_CORE_RESET_CMD_RECEIVED ||
status == NCI2_0_RESET_TRIGGER_TYPE_POWERED_ON) {
DLOG_IF(INFO, nfc_debug_enabled) << StringPrintf(
"CORE_RESET_NTF Received status nfc_state : 0x%x : 0x%x", status,
nfc_cb.nfc_state);
nfc_stop_timer(&nfc_cb.nci_wait_rsp_timer);
p++;
STREAM_TO_UINT8(nfc_cb.nci_version, p);
DLOG_IF(INFO, nfc_debug_enabled)
<< StringPrintf(" CORE_RESET_NTF nci_version%x", nfc_cb.nci_version);
status = NCI_STATUS_OK;
} else {
/* CORE_RESET_NTF received error case , trigger recovery*/
DLOG_IF(INFO, nfc_debug_enabled) << StringPrintf(
"CORE_RESET_NTF Received status nfc_state : 0x%x : 0x%x", status,
nfc_cb.nfc_state);
nfc_ncif_cmd_timeout();
status = NCI_STATUS_FAILED;
}
if (nfc_cb.nfc_state == NFC_STATE_OPEN) {
/*if any conn_cb is connected, close it.
if any pending outgoing packets are dropped.*/
nfc_reset_all_conn_cbs();
}
} else {
DLOG_IF(INFO, nfc_debug_enabled)
<< StringPrintf("CORE_RESET_RSP len :0x%x ", *p_len);
if ((*p_len) == NCI_CORE_RESET_RSP_LEN(NCI_VERSION_2_0)) {
wait_for_ntf = TRUE;
} else if ((*p_len) == NCI_CORE_RESET_RSP_LEN(NCI_VERSION_1_0)) {
nfc_cb.nci_version = NCI_VERSION_1_0;
}
}
if (nfc_cb.flags & (NFC_FL_RESTARTING | NFC_FL_POWER_CYCLE_NFCC)) {
nfc_reset_all_conn_cbs();
}
if (status == NCI_STATUS_OK) {
if (wait_for_ntf == TRUE) {
/* reset version reported by NFCC is NCI2.0 , start a timer for 2000ms to
* wait for NTF*/
nfc_start_timer(&nfc_cb.nci_wait_rsp_timer,
(uint16_t)(NFC_TTYPE_NCI_WAIT_RSP),
nfc_cb.nci_wait_rsp_tout);
} else {
if (nfc_cb.nci_version == NCI_VERSION_1_0)
nci_snd_core_init(NCI_VERSION_1_0);
else
nci_snd_core_init(NCI_VERSION_2_0);
}
} else {
LOG(ERROR) << StringPrintf("Failed to reset NFCC");
nfc_enabled(status, nullptr);
}
}
/*******************************************************************************
**
** Function nfc_ncif_proc_init_rsp
**
** Description This function is called to process init response
**
** Returns void
**
*******************************************************************************/
void nfc_ncif_proc_init_rsp(NFC_HDR* p_msg) {
uint8_t *p, status;
tNFC_CONN_CB* p_cb = &nfc_cb.conn_cb[NFC_RF_CONN_ID];
p = (uint8_t*)(p_msg + 1) + p_msg->offset;
/* handle init params in nfc_enabled */
status = *(p + NCI_MSG_HDR_SIZE);
if (status == NCI_STATUS_OK) {
if (nfc_cb.nci_version == NCI_VERSION_UNKNOWN) {
nci_snd_core_reset(NCI_RESET_TYPE_RESET_CFG);
} else {
p_cb->id = NFC_RF_CONN_ID;
// check scbr bit as per NCI 2.0 spec
nfc_cb.isScbrSupported = p[5] & NCI_SCBR_MASK;
DLOG_IF(INFO, nfc_debug_enabled)
<< StringPrintf("scbr support: 0x%x", nfc_cb.isScbrSupported);
p_cb->act_protocol = NCI_PROTOCOL_UNKNOWN;
nfc_set_state(NFC_STATE_W4_POST_INIT_CPLT);
nfc_cb.p_nci_init_rsp = p_msg;
nfc_cb.p_hal->core_initialized(p_msg->len, p);
}
} else {
if (nfc_cb.nci_version == NCI_VERSION_UNKNOWN) {
nfc_cb.nci_version = NCI_VERSION_1_0;
nci_snd_core_reset(NCI_RESET_TYPE_RESET_CFG);
} else {
nfc_enabled(status, nullptr);
GKI_freebuf(p_msg);
}
}
}
/*******************************************************************************
**
** Function nfc_ncif_proc_get_config_rsp
**
** Description This function is called to process get config response
**
** Returns void
**
*******************************************************************************/
void nfc_ncif_proc_get_config_rsp(NFC_HDR* p_evt) {
uint8_t* p;
tNFC_RESPONSE_CBACK* p_cback = nfc_cb.p_resp_cback;
tNFC_RESPONSE evt_data;
p_evt->offset += NCI_MSG_HDR_SIZE;
p_evt->len -= NCI_MSG_HDR_SIZE;
if (p_cback) {
p = (uint8_t*)(p_evt + 1) + p_evt->offset;
evt_data.get_config.status = *p++;
evt_data.get_config.tlv_size = p_evt->len;
evt_data.get_config.p_param_tlvs = p;
(*p_cback)(NFC_GET_CONFIG_REVT, &evt_data);
}
}
/*******************************************************************************
**
** Function nfc_ncif_proc_t3t_polling_ntf
**
** Description Handle NCI_MSG_RF_T3T_POLLING NTF
**
** Returns void
**
*******************************************************************************/
void nfc_ncif_proc_t3t_polling_ntf(uint8_t* p, uint16_t plen) {
uint8_t status;
uint8_t num_responses;
if (plen < NFC_TL_SIZE) {
return;
}
/* Pass result to RW_T3T for processing */
STREAM_TO_UINT8(status, p);
STREAM_TO_UINT8(num_responses, p);
plen -= NFC_TL_SIZE;
rw_t3t_handle_nci_poll_ntf(status, num_responses, (uint8_t)plen, p);
}
/*******************************************************************************
**
** Function nfc_data_event
**
** Description Report Data event on the given connection control block
**
** Returns void
**
*******************************************************************************/
void nfc_data_event(tNFC_CONN_CB* p_cb) {
NFC_HDR* p_evt;
tNFC_DATA_CEVT data_cevt;
uint8_t* p;
if (p_cb->p_cback) {
while ((p_evt = (NFC_HDR*)GKI_getfirst(&p_cb->rx_q)) != nullptr) {
if (p_evt->layer_specific & NFC_RAS_FRAGMENTED) {
/* Not the last fragment */
if (!(p_evt->layer_specific & NFC_RAS_TOO_BIG)) {
/* buffer can hold more */
if ((p_cb->conn_id != NFC_RF_CONN_ID) || (nfc_cb.reassembly)) {
/* If not rf connection or If rf connection and reassembly
* requested,
* try to Reassemble next packet */
break;
}
}
}
p_evt = (NFC_HDR*)GKI_dequeue(&p_cb->rx_q);
/* report data event */
p_evt->offset += NCI_MSG_HDR_SIZE;
p_evt->len -= NCI_MSG_HDR_SIZE;
if (p_evt->layer_specific)
data_cevt.status = NFC_STATUS_CONTINUE;
else {
nfc_cb.reassembly = true;
data_cevt.status = NFC_STATUS_OK;
}
data_cevt.p_data = p_evt;
/* adjust payload, if needed */
if (p_cb->conn_id == NFC_RF_CONN_ID) {
/* if NCI_PROTOCOL_T1T/NCI_PROTOCOL_T2T/NCI_PROTOCOL_T3T, the status
* byte needs to be removed
*/
if ((p_cb->act_protocol >= NCI_PROTOCOL_T1T) &&
(p_cb->act_protocol <= NCI_PROTOCOL_T3T)) {
if (p_evt->len) p_evt->len--;
p = (uint8_t*)(p_evt + 1);
data_cevt.status = *(p + p_evt->offset + p_evt->len);
if ((NFC_GetNCIVersion() == NCI_VERSION_2_0) &&
(p_cb->act_protocol == NCI_PROTOCOL_T2T) &&
(p_cb->act_interface == NCI_INTERFACE_FRAME)) {
if ((data_cevt.status != NFC_STATUS_OK) &&
((data_cevt.status >= T2T_STATUS_OK_1_BIT) &&
(data_cevt.status <= T2T_STATUS_OK_7_BIT))) {
DLOG_IF(INFO, nfc_debug_enabled)
<< StringPrintf("%s: T2T tag data xchange", __func__);
data_cevt.status = NFC_STATUS_OK;
}
}
}
if ((NFC_GetNCIVersion() == NCI_VERSION_2_0) &&
(p_cb->act_protocol == NCI_PROTOCOL_T5T)) {
if (p_evt->len) p_evt->len--;
p = (uint8_t*)(p_evt + 1);
data_cevt.status = *(p + p_evt->offset + p_evt->len);
}
}
tNFC_CONN nfc_conn;
nfc_conn.data = data_cevt;
(*p_cb->p_cback)(p_cb->conn_id, NFC_DATA_CEVT, &nfc_conn);
p_evt = nullptr;
}
}
}
/*******************************************************************************
**
** Function nfc_ncif_proc_data
**
** Description Find the connection control block associated with the data
** packet. Assemble the data packet, if needed.
** Report the Data event.
**
** Returns void
**
*******************************************************************************/
void nfc_ncif_proc_data(NFC_HDR* p_msg) {
uint8_t *pp, cid;
tNFC_CONN_CB* p_cb;
uint8_t pbf;
NFC_HDR* p_last;
uint8_t *ps, *pd;
uint16_t size;
NFC_HDR* p_max = nullptr;
uint16_t len;
pp = (uint8_t*)(p_msg + 1) + p_msg->offset;
DLOG_IF(INFO, nfc_debug_enabled)
<< StringPrintf("nfc_ncif_proc_data 0x%02x%02x%02x", pp[0], pp[1], pp[2]);
NCI_DATA_PRS_HDR(pp, pbf, cid, len);
p_cb = nfc_find_conn_cb_by_conn_id(cid);
if (p_cb && (p_msg->len >= NCI_DATA_HDR_SIZE)) {
DLOG_IF(INFO, nfc_debug_enabled)
<< StringPrintf("nfc_ncif_proc_data len:%d", len);
len = p_msg->len - NCI_MSG_HDR_SIZE;
p_msg->layer_specific = 0;
if (pbf) {
NFC_SetReassemblyFlag(true);
p_msg->layer_specific = NFC_RAS_FRAGMENTED;
}
p_last = (NFC_HDR*)GKI_getlast(&p_cb->rx_q);
if (p_last && (p_last->layer_specific & NFC_RAS_FRAGMENTED)) {
/* last data buffer is not last fragment, append this new packet to the
* last */
size = GKI_get_buf_size(p_last);
if (size < (NFC_HDR_SIZE + p_last->len + p_last->offset + len)) {
/* the current size of p_last is not big enough to hold the new
* fragment, p_msg */
if (size != GKI_MAX_BUF_SIZE) {
/* try the biggest GKI pool */
p_max = (NFC_HDR*)GKI_getpoolbuf(GKI_MAX_BUF_SIZE_POOL_ID);
if (p_max) {
/* copy the content of last buffer to the new buffer */
memcpy(p_max, p_last, NFC_HDR_SIZE);
pd = (uint8_t*)(p_max + 1) + p_max->offset;
ps = (uint8_t*)(p_last + 1) + p_last->offset;
memcpy(pd, ps, p_last->len);
/* place the new buffer in the queue instead */
GKI_remove_from_queue(&p_cb->rx_q, p_last);
GKI_freebuf(p_last);
GKI_enqueue(&p_cb->rx_q, p_max);
p_last = p_max;
}
}
if (p_max == nullptr) {
/* Biggest GKI Pool not available (or)
* Biggest available GKI Pool is not big enough to hold the new
* fragment, p_msg */
p_last->layer_specific |= NFC_RAS_TOO_BIG;
}
}
ps = (uint8_t*)(p_msg + 1) + p_msg->offset + NCI_MSG_HDR_SIZE;
if (!(p_last->layer_specific & NFC_RAS_TOO_BIG)) {
pd = (uint8_t*)(p_last + 1) + p_last->offset + p_last->len;
memcpy(pd, ps, len);
p_last->len += len;
/* do not need to update pbf and len in NCI header.
* They are stripped off at NFC_DATA_CEVT and len may exceed 255 */
DLOG_IF(INFO, nfc_debug_enabled)
<< StringPrintf("nfc_ncif_proc_data len:%d", p_last->len);
p_last->layer_specific = p_msg->layer_specific;
GKI_freebuf(p_msg);
nfc_data_event(p_cb);
} else {
/* Not enough memory to add new buffer
* Send data already in queue first with status Continue */
nfc_data_event(p_cb);
/* now enqueue the new buffer to the rx queue */
GKI_enqueue(&p_cb->rx_q, p_msg);
}
} else {
/* if this is the first fragment on RF link */
if ((p_msg->layer_specific & NFC_RAS_FRAGMENTED) &&
(p_cb->conn_id == NFC_RF_CONN_ID) && (p_cb->p_cback)) {
/* Indicate upper layer that local device started receiving data */
(*p_cb->p_cback)(p_cb->conn_id, NFC_DATA_START_CEVT, nullptr);
}
/* enqueue the new buffer to the rx queue */
GKI_enqueue(&p_cb->rx_q, p_msg);
nfc_data_event(p_cb);
}
return;
}
GKI_freebuf(p_msg);
}
/*******************************************************************************
**
** Function nfc_ncif_process_proprietary_rsp
**
** Description Process the response to avoid collision
** while rawVsCbflag is set
**
** Returns true if proprietary response else false
**
*******************************************************************************/
bool nfc_ncif_proc_proprietary_rsp(uint8_t mt, uint8_t gid, uint8_t oid) {
bool stat = FALSE;
DLOG_IF(INFO, nfc_debug_enabled)
<< StringPrintf("%s: mt=%u, gid=%u, oid=%u", __func__, mt, gid, oid);
switch (mt) {
case NCI_MT_DATA:
/* check for Data Response */
if (gid != 0x03 && oid != 0x00) stat = TRUE;
break;
case NCI_MT_NTF:
switch (gid) {
case NCI_GID_CORE:
/* check for CORE_RESET_NTF or CORE_CONN_CREDITS_NTF */
if (oid != 0x00 && oid != 0x06) stat = TRUE;
break;
case NCI_GID_RF_MANAGE:
/* check for CORE_CONN_CREDITS_NTF or NFA_EE_ACTION_NTF or
* NFA_EE_DISCOVERY_REQ_NTF */
if (oid != 0x06 && oid != 0x09 && oid != 0x0A) stat = TRUE;
break;
case NCI_GID_EE_MANAGE:
if (oid != 0x00) stat = TRUE;
break;
default:
stat = TRUE;
break;
}
break;
default:
stat = TRUE;
break;
}
DLOG_IF(INFO, nfc_debug_enabled)
<< StringPrintf("%s: exit status=%u", __func__, stat);
return stat;
}
/*******************************************************************************
** Function nfc_mode_set_ntf_timeout
**
** Description This function is invoked on mode set ntf timeout
**
** Returns void
**
*******************************************************************************/
void nfc_mode_set_ntf_timeout() {
LOG(ERROR) << StringPrintf("%s", __func__);
tNFC_RESPONSE nfc_response;
nfc_response.mode_set.status = NCI_STATUS_FAILED;
nfc_response.mode_set.nfcee_id = *nfc_cb.last_cmd;
nfc_response.mode_set.mode = NCI_NFCEE_MD_DEACTIVATE;
tNFC_RESPONSE_CBACK* p_cback = nfc_cb.p_resp_cback;
tNFC_RESPONSE_EVT event = NFC_NFCEE_MODE_SET_REVT;
if (p_cback) (*p_cback)(event, &nfc_response);
}