/******************************************************************************
*
* Copyright (C) 1999-2012 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.
*
******************************************************************************/
#include "OverrideLog.h"
#define LOG_TAG "NfcNciHal"
#include "gki.h"
extern "C"
{
#include "nfc_hal_target.h"
#include "nfc_hal_nv_ci.h"
}
#include "config.h"
#include "CrcChecksum.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <string>
//directory of HAL's non-volatile storage
static const char* default_location = "/data/nfc";
static const char* filename_prefix = "/halStorage.bin";
static const std::string get_storage_location ();
void delete_hal_non_volatile_store (bool forceDelete);
void verify_hal_non_volatile_store ();
/*******************************************************************************
**
** Function nfc_hal_nv_co_read
**
** Description This function is called by NFA to read in data from the
** previously opened file.
**
** Parameters p_buf - buffer to read the data into.
** nbytes - number of bytes to read into the buffer.
**
** Returns void
**
** Note: Upon completion of the request, nfc_hal_nv_ci_read () is
** called with the buffer of data, along with the number
** of bytes read into the buffer, and a status. The
** call-in function should only be called when ALL requested
** bytes have been read, the end of file has been detected,
** or an error has occurred.
**
*******************************************************************************/
void nfc_hal_nv_co_read (UINT8 *p_buf, UINT16 nbytes, UINT8 block)
{
std::string fn = get_storage_location();
char filename[256];
fn.append (filename_prefix);
if (fn.length() > 200)
{
ALOGE ("%s: filename too long", __FUNCTION__);
return;
}
snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), block);
ALOGD ("%s: buffer len=%u; file=%s", __FUNCTION__, nbytes, filename);
int fileStream = open (filename, O_RDONLY);
if (fileStream >= 0)
{
unsigned short checksum = 0;
size_t actualReadCrc = read (fileStream, &checksum, sizeof(checksum));
size_t actualReadData = read (fileStream, p_buf, nbytes);
close (fileStream);
if (actualReadData > 0)
{
ALOGD ("%s: data size=%u", __FUNCTION__, actualReadData);
nfc_hal_nv_ci_read (actualReadData, NFC_HAL_NV_CO_OK, block);
}
else
{
ALOGE ("%s: fail to read", __FUNCTION__);
nfc_hal_nv_ci_read (0, NFC_HAL_NV_CO_FAIL, block);
}
}
else
{
ALOGD ("%s: fail to open", __FUNCTION__);
nfc_hal_nv_ci_read (0, NFC_HAL_NV_CO_FAIL, block);
}
}
/*******************************************************************************
**
** Function nfc_hal_nv_co_write
**
** Description This function is called by io to send file data to the
** phone.
**
** Parameters p_buf - buffer to read the data from.
** nbytes - number of bytes to write out to the file.
**
** Returns void
**
** Note: Upon completion of the request, nfc_hal_nv_ci_write () is
** called with the file descriptor and the status. The
** call-in function should only be called when ALL requested
** bytes have been written, or an error has been detected,
**
*******************************************************************************/
void nfc_hal_nv_co_write (const UINT8 *p_buf, UINT16 nbytes, UINT8 block)
{
std::string fn = get_storage_location();
char filename[256];
int fileStream = 0;
fn.append (filename_prefix);
if (fn.length() > 200)
{
ALOGE ("%s: filename too long", __FUNCTION__);
return;
}
snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), block);
ALOGD ("%s: bytes=%u; file=%s", __FUNCTION__, nbytes, filename);
fileStream = open (filename, O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR);
if (fileStream >= 0)
{
unsigned short checksum = crcChecksumCompute (p_buf, nbytes);
size_t actualWrittenCrc = write (fileStream, &checksum, sizeof(checksum));
size_t actualWrittenData = write (fileStream, p_buf, nbytes);
ALOGD ("%s: %d bytes written", __FUNCTION__, actualWrittenData);
if ((actualWrittenData == nbytes) && (actualWrittenCrc == sizeof(checksum)))
{
nfc_hal_nv_ci_write (NFC_HAL_NV_CO_OK);
}
else
{
ALOGE ("%s: fail to write", __FUNCTION__);
nfc_hal_nv_ci_write (NFC_HAL_NV_CO_FAIL);
}
close (fileStream);
}
else
{
ALOGE ("%s: fail to open, error = %d", __FUNCTION__, errno);
nfc_hal_nv_ci_write (NFC_HAL_NV_CO_FAIL);
}
}
/*******************************************************************************
**
** Function get_storage_location
**
** Description Get the absolute directory path of the HAL's storage location.
**
** Parameters none
**
** Returns Absolute path.
**
*******************************************************************************/
const std::string get_storage_location ()
{
char buffer [100];
memset (buffer, 0, sizeof(buffer));
if (!GetStrValue (NAME_NFA_STORAGE, buffer, sizeof(buffer)))
return default_location;
else
return std::string (buffer);
}
/*******************************************************************************
**
** Function delete_hal_non_volatile_store
**
** Description Delete all the content of the HAL's storage location.
**
** Parameters forceDelete: unconditionally delete the storage.
**
** Returns none
**
*******************************************************************************/
void delete_hal_non_volatile_store (bool forceDelete)
{
static bool firstTime = true;
std::string fn = get_storage_location();
char filename[256];
int stat = 0;
if ((firstTime == false) && (forceDelete == false))
return;
firstTime = false;
ALOGD ("%s", __FUNCTION__);
fn.append (filename_prefix);
if (fn.length() > 200)
{
ALOGE ("%s: filename too long", __FUNCTION__);
return;
}
snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), DH_NV_BLOCK);
remove (filename);
snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), HC_F3_NV_BLOCK);
remove (filename);
snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), HC_F4_NV_BLOCK);
remove (filename);
snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), HC_F2_NV_BLOCK);
remove (filename);
snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), HC_F5_NV_BLOCK);
remove (filename);
}
/*******************************************************************************
**
** Function verify_hal_non_volatile_store
**
** Description Verify the content of all non-volatile store.
**
** Parameters none
**
** Returns none
**
*******************************************************************************/
void verify_hal_non_volatile_store ()
{
ALOGD ("%s", __FUNCTION__);
std::string fn = get_storage_location();
char filename[256];
bool isValid = false;
fn.append (filename_prefix);
if (fn.length() > 200)
{
ALOGE ("%s: filename too long", __FUNCTION__);
return;
}
snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), DH_NV_BLOCK);
if (crcChecksumVerifyIntegrity (filename))
{
snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), HC_F3_NV_BLOCK);
if (crcChecksumVerifyIntegrity (filename))
{
snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), HC_F4_NV_BLOCK);
if (crcChecksumVerifyIntegrity (filename))
{
snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), HC_F2_NV_BLOCK);
if (crcChecksumVerifyIntegrity (filename))
{
snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), HC_F5_NV_BLOCK);
if (crcChecksumVerifyIntegrity (filename))
isValid = true;
}
}
}
}
if (isValid == false)
delete_hal_non_volatile_store (true);
}