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_target.h" 24 #include "nfc_hal_nv_ci.h" 25} 26#include "config.h" 27#include "CrcChecksum.h" 28#include <sys/types.h> 29#include <sys/stat.h> 30#include <fcntl.h> 31#include <errno.h> 32#include <string> 33 34 35//directory of HAL's non-volatile storage 36static const char* default_location = "/data/nfc"; 37static const char* filename_prefix = "/halStorage.bin"; 38static const std::string get_storage_location (); 39void delete_hal_non_volatile_store (bool forceDelete); 40void verify_hal_non_volatile_store (); 41 42 43/******************************************************************************* 44** 45** Function nfc_hal_nv_co_read 46** 47** Description This function is called by NFA to read in data from the 48** previously opened file. 49** 50** Parameters p_buf - buffer to read the data into. 51** nbytes - number of bytes to read into the buffer. 52** 53** Returns void 54** 55** Note: Upon completion of the request, nfc_hal_nv_ci_read () is 56** called with the buffer of data, along with the number 57** of bytes read into the buffer, and a status. The 58** call-in function should only be called when ALL requested 59** bytes have been read, the end of file has been detected, 60** or an error has occurred. 61** 62*******************************************************************************/ 63void nfc_hal_nv_co_read (UINT8 *p_buf, UINT16 nbytes, UINT8 block) 64{ 65 std::string fn = get_storage_location(); 66 char filename[256]; 67 68 fn.append (filename_prefix); 69 if (fn.length() > 200) 70 { 71 ALOGE ("%s: filename too long", __FUNCTION__); 72 return; 73 } 74 snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), block); 75 76 ALOGD ("%s: buffer len=%u; file=%s", __FUNCTION__, nbytes, filename); 77 int fileStream = open (filename, O_RDONLY); 78 if (fileStream >= 0) 79 { 80 unsigned short checksum = 0; 81 size_t actualReadCrc = read (fileStream, &checksum, sizeof(checksum)); 82 size_t actualReadData = read (fileStream, p_buf, nbytes); 83 close (fileStream); 84 if (actualReadData > 0) 85 { 86 ALOGD ("%s: data size=%u", __FUNCTION__, actualReadData); 87 nfc_hal_nv_ci_read (actualReadData, NFC_HAL_NV_CO_OK, block); 88 } 89 else 90 { 91 ALOGE ("%s: fail to read", __FUNCTION__); 92 nfc_hal_nv_ci_read (0, NFC_HAL_NV_CO_FAIL, block); 93 } 94 } 95 else 96 { 97 ALOGD ("%s: fail to open", __FUNCTION__); 98 nfc_hal_nv_ci_read (0, NFC_HAL_NV_CO_FAIL, block); 99 } 100} 101 102 103/******************************************************************************* 104** 105** Function nfc_hal_nv_co_write 106** 107** Description This function is called by io to send file data to the 108** phone. 109** 110** Parameters p_buf - buffer to read the data from. 111** nbytes - number of bytes to write out to the file. 112** 113** Returns void 114** 115** Note: Upon completion of the request, nfc_hal_nv_ci_write () is 116** called with the file descriptor and the status. The 117** call-in function should only be called when ALL requested 118** bytes have been written, or an error has been detected, 119** 120*******************************************************************************/ 121void nfc_hal_nv_co_write (const UINT8 *p_buf, UINT16 nbytes, UINT8 block) 122{ 123 std::string fn = get_storage_location(); 124 char filename[256]; 125 int fileStream = 0; 126 127 fn.append (filename_prefix); 128 if (fn.length() > 200) 129 { 130 ALOGE ("%s: filename too long", __FUNCTION__); 131 return; 132 } 133 snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), block); 134 ALOGD ("%s: bytes=%u; file=%s", __FUNCTION__, nbytes, filename); 135 136 fileStream = open (filename, O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR); 137 if (fileStream >= 0) 138 { 139 unsigned short checksum = crcChecksumCompute (p_buf, nbytes); 140 size_t actualWrittenCrc = write (fileStream, &checksum, sizeof(checksum)); 141 size_t actualWrittenData = write (fileStream, p_buf, nbytes); 142 ALOGD ("%s: %d bytes written", __FUNCTION__, actualWrittenData); 143 if ((actualWrittenData == nbytes) && (actualWrittenCrc == sizeof(checksum))) 144 { 145 nfc_hal_nv_ci_write (NFC_HAL_NV_CO_OK); 146 } 147 else 148 { 149 ALOGE ("%s: fail to write", __FUNCTION__); 150 nfc_hal_nv_ci_write (NFC_HAL_NV_CO_FAIL); 151 } 152 close (fileStream); 153 } 154 else 155 { 156 ALOGE ("%s: fail to open, error = %d", __FUNCTION__, errno); 157 nfc_hal_nv_ci_write (NFC_HAL_NV_CO_FAIL); 158 } 159} 160 161 162/******************************************************************************* 163** 164** Function get_storage_location 165** 166** Description Get the absolute directory path of the HAL's storage location. 167** 168** Parameters none 169** 170** Returns Absolute path. 171** 172*******************************************************************************/ 173const std::string get_storage_location () 174{ 175 char buffer [100]; 176 memset (buffer, 0, sizeof(buffer)); 177 if (!GetStrValue (NAME_NFA_STORAGE, buffer, sizeof(buffer))) 178 return default_location; 179 else 180 return std::string (buffer); 181} 182 183 184/******************************************************************************* 185** 186** Function delete_hal_non_volatile_store 187** 188** Description Delete all the content of the HAL's storage location. 189** 190** Parameters forceDelete: unconditionally delete the storage. 191** 192** Returns none 193** 194*******************************************************************************/ 195void delete_hal_non_volatile_store (bool forceDelete) 196{ 197 static bool firstTime = true; 198 std::string fn = get_storage_location(); 199 char filename[256]; 200 int stat = 0; 201 202 if ((firstTime == false) && (forceDelete == false)) 203 return; 204 firstTime = false; 205 206 ALOGD ("%s", __FUNCTION__); 207 208 fn.append (filename_prefix); 209 if (fn.length() > 200) 210 { 211 ALOGE ("%s: filename too long", __FUNCTION__); 212 return; 213 } 214 215 snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), DH_NV_BLOCK); 216 remove (filename); 217 snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), HC_F3_NV_BLOCK); 218 remove (filename); 219 snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), HC_F4_NV_BLOCK); 220 remove (filename); 221 snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), HC_F2_NV_BLOCK); 222 remove (filename); 223 snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), HC_F5_NV_BLOCK); 224 remove (filename); 225} 226 227 228/******************************************************************************* 229** 230** Function verify_hal_non_volatile_store 231** 232** Description Verify the content of all non-volatile store. 233** 234** Parameters none 235** 236** Returns none 237** 238*******************************************************************************/ 239void verify_hal_non_volatile_store () 240{ 241 ALOGD ("%s", __FUNCTION__); 242 std::string fn = get_storage_location(); 243 char filename[256]; 244 bool isValid = false; 245 246 fn.append (filename_prefix); 247 if (fn.length() > 200) 248 { 249 ALOGE ("%s: filename too long", __FUNCTION__); 250 return; 251 } 252 253 snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), DH_NV_BLOCK); 254 if (crcChecksumVerifyIntegrity (filename)) 255 { 256 snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), HC_F3_NV_BLOCK); 257 if (crcChecksumVerifyIntegrity (filename)) 258 { 259 snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), HC_F4_NV_BLOCK); 260 if (crcChecksumVerifyIntegrity (filename)) 261 { 262 snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), HC_F2_NV_BLOCK); 263 if (crcChecksumVerifyIntegrity (filename)) 264 { 265 snprintf (filename, sizeof(filename), "%s%u", fn.c_str(), HC_F5_NV_BLOCK); 266 if (crcChecksumVerifyIntegrity (filename)) 267 isValid = true; 268 } 269 } 270 } 271 } 272 273 if (isValid == false) 274 delete_hal_non_volatile_store (true); 275} 276