1/****************************************************************************** 2 * 3 * Copyright (C) 1999-2012 Broadcom Corporation 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ******************************************************************************/ 18#include "OverrideLog.h" 19#define LOG_TAG "NfcNciHal" 20#include "gki.h" 21extern "C" 22{ 23 #include "nfc_hal_nv_co.h" 24} 25#include "nfc_hal_nv_ci.h" 26#include "nfc_hal_int.h" 27#include "config.h" 28#include "CrcChecksum.h" 29#include <sys/types.h> 30#include <sys/stat.h> 31#include <fcntl.h> 32#include <errno.h> 33#include <string> 34 35 36//directory of HAL's non-volatile storage 37static const char* default_location = "/data/nfc"; 38static const char* filename_prefix = "/halStorage.bin"; 39static const std::string get_storage_location (); 40void delete_hal_non_volatile_store (bool forceDelete); 41void verify_hal_non_volatile_store (); 42 43 44/******************************************************************************* 45** 46** Function nfc_hal_nv_co_read 47** 48** Description This function is called by NFA to read in data from the 49** previously opened file. 50** 51** Parameters p_buf - buffer to read the data into. 52** nbytes - number of bytes to read into the buffer. 53** 54** Returns void 55** 56** Note: Upon completion of the request, nfc_hal_nv_ci_read () is 57** called with the buffer of data, along with the number 58** of bytes read into the buffer, and a status. The 59** call-in function should only be called when ALL requested 60** bytes have been read, the end of file has been detected, 61** or an error has occurred. 62** 63*******************************************************************************/ 64void nfc_hal_nv_co_read (UINT8 *p_buf, UINT16 nbytes, UINT8 block) 65{ 66 std::string fn = get_storage_location(); 67 char filename[256]; 68 69 fn.append (filename_prefix); 70 if (fn.length() > 200) 71 { 72 ALOGE ("%s: filename too long", __FUNCTION__); 73 return; 74 } 75 snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), block); 76 77 ALOGD ("%s: buffer len=%u; file=%s", __FUNCTION__, nbytes, filename); 78 int fileStream = open (filename, O_RDONLY); 79 if (fileStream >= 0) 80 { 81 unsigned short checksum = 0; 82 size_t actualReadCrc = read (fileStream, &checksum, sizeof(checksum)); 83 size_t actualReadData = read (fileStream, p_buf, nbytes); 84 close (fileStream); 85 if (actualReadData > 0) 86 { 87 ALOGD ("%s: data size=%u", __FUNCTION__, actualReadData); 88 nfc_hal_nv_ci_read (actualReadData, NFC_HAL_NV_CO_OK, block); 89 } 90 else 91 { 92 ALOGE ("%s: fail to read", __FUNCTION__); 93 nfc_hal_nv_ci_read (0, NFC_HAL_NV_CO_FAIL, block); 94 } 95 } 96 else 97 { 98 ALOGD ("%s: fail to open", __FUNCTION__); 99 nfc_hal_nv_ci_read (0, NFC_HAL_NV_CO_FAIL, block); 100 } 101} 102 103 104/******************************************************************************* 105** 106** Function nfc_hal_nv_co_write 107** 108** Description This function is called by io to send file data to the 109** phone. 110** 111** Parameters p_buf - buffer to read the data from. 112** nbytes - number of bytes to write out to the file. 113** 114** Returns void 115** 116** Note: Upon completion of the request, nfc_hal_nv_ci_write () is 117** called with the file descriptor and the status. The 118** call-in function should only be called when ALL requested 119** bytes have been written, or an error has been detected, 120** 121*******************************************************************************/ 122void nfc_hal_nv_co_write (const UINT8 *p_buf, UINT16 nbytes, UINT8 block) 123{ 124 std::string fn = get_storage_location(); 125 char filename[256]; 126 int fileStream = 0; 127 128 fn.append (filename_prefix); 129 if (fn.length() > 200) 130 { 131 ALOGE ("%s: filename too long", __FUNCTION__); 132 return; 133 } 134 snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), block); 135 ALOGD ("%s: bytes=%u; file=%s", __FUNCTION__, nbytes, filename); 136 137 fileStream = open (filename, O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR); 138 if (fileStream >= 0) 139 { 140 unsigned short checksum = crcChecksumCompute (p_buf, nbytes); 141 size_t actualWrittenCrc = write (fileStream, &checksum, sizeof(checksum)); 142 size_t actualWrittenData = write (fileStream, p_buf, nbytes); 143 ALOGD ("%s: %d bytes written", __FUNCTION__, actualWrittenData); 144 if ((actualWrittenData == nbytes) && (actualWrittenCrc == sizeof(checksum))) 145 { 146 nfc_hal_nv_ci_write (NFC_HAL_NV_CO_OK); 147 } 148 else 149 { 150 ALOGE ("%s: fail to write", __FUNCTION__); 151 nfc_hal_nv_ci_write (NFC_HAL_NV_CO_FAIL); 152 } 153 close (fileStream); 154 } 155 else 156 { 157 ALOGE ("%s: fail to open, error = %d", __FUNCTION__, errno); 158 nfc_hal_nv_ci_write (NFC_HAL_NV_CO_FAIL); 159 } 160} 161 162 163/******************************************************************************* 164** 165** Function get_storage_location 166** 167** Description Get the absolute directory path of the HAL's storage location. 168** 169** Parameters none 170** 171** Returns Absolute path. 172** 173*******************************************************************************/ 174const std::string get_storage_location () 175{ 176 char buffer [100]; 177 memset (buffer, 0, sizeof(buffer)); 178 if (!GetStrValue (NAME_NFA_STORAGE, buffer, sizeof(buffer))) 179 return default_location; 180 else 181 return std::string (buffer); 182} 183 184 185/******************************************************************************* 186** 187** Function delete_hal_non_volatile_store 188** 189** Description Delete all the content of the HAL's storage location. 190** 191** Parameters forceDelete: unconditionally delete the storage. 192** 193** Returns none 194** 195*******************************************************************************/ 196void delete_hal_non_volatile_store (bool forceDelete) 197{ 198 static bool firstTime = true; 199 std::string fn = get_storage_location(); 200 char filename[256]; 201 int stat = 0; 202 203 if ((firstTime == false) && (forceDelete == false)) 204 return; 205 firstTime = false; 206 207 ALOGD ("%s", __FUNCTION__); 208 209 fn.append (filename_prefix); 210 if (fn.length() > 200) 211 { 212 ALOGE ("%s: filename too long", __FUNCTION__); 213 return; 214 } 215 216 snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), DH_NV_BLOCK); 217 remove (filename); 218 snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), HC_F3_NV_BLOCK); 219 remove (filename); 220 snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), HC_F4_NV_BLOCK); 221 remove (filename); 222 snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), HC_F2_NV_BLOCK); 223 remove (filename); 224} 225 226 227/******************************************************************************* 228** 229** Function verify_hal_non_volatile_store 230** 231** Description Verify the content of all non-volatile store. 232** 233** Parameters none 234** 235** Returns none 236** 237*******************************************************************************/ 238void verify_hal_non_volatile_store () 239{ 240 ALOGD ("%s", __FUNCTION__); 241 std::string fn = get_storage_location(); 242 char filename[256]; 243 bool isValid = false; 244 245 fn.append (filename_prefix); 246 if (fn.length() > 200) 247 { 248 ALOGE ("%s: filename too long", __FUNCTION__); 249 return; 250 } 251 252 snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), DH_NV_BLOCK); 253 if (crcChecksumVerifyIntegrity (filename)) 254 { 255 snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), HC_F3_NV_BLOCK); 256 if (crcChecksumVerifyIntegrity (filename)) 257 { 258 snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), HC_F4_NV_BLOCK); 259 if (crcChecksumVerifyIntegrity (filename)) 260 { 261 snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), HC_F2_NV_BLOCK); 262 if (crcChecksumVerifyIntegrity (filename)) 263 isValid = true; 264 } 265 } 266 } 267 268 if (isValid == false) 269 delete_hal_non_volatile_store (true); 270} 271