The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
Evan Chu | e9629ba | 2014-01-31 11:18:47 -0500 | [diff] [blame] | 3 | * Copyright (C) 2010-2014 Broadcom Corporation |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 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 | |
| 19 | /****************************************************************************** |
| 20 | * |
| 21 | * This file contains the implementation for Type 2 tag NDEF operation in |
| 22 | * Reader/Writer mode. |
| 23 | * |
| 24 | ******************************************************************************/ |
| 25 | #include <string.h> |
| 26 | #include "nfc_target.h" |
| 27 | |
| 28 | #if (NFC_INCLUDED == TRUE) |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 29 | #include "gki.h" |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 30 | #include "nci_hmsgs.h" |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 31 | #include "nfc_api.h" |
| 32 | #include "nfc_int.h" |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 33 | #include "rw_api.h" |
| 34 | #include "rw_int.h" |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 35 | |
Ruchi Kandoi | 303fec1 | 2016-12-14 13:22:38 -0800 | [diff] [blame] | 36 | #if (RW_NDEF_INCLUDED == TRUE) |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 37 | |
| 38 | /* Local static functions */ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 39 | static void rw_t2t_handle_cc_read_rsp(void); |
| 40 | static void rw_t2t_handle_lock_read_rsp(uint8_t* p_data); |
| 41 | static void rw_t2t_handle_tlv_detect_rsp(uint8_t* p_data); |
| 42 | static void rw_t2t_handle_ndef_read_rsp(uint8_t* p_data); |
| 43 | static void rw_t2t_handle_ndef_write_rsp(uint8_t* p_data); |
| 44 | static void rw_t2t_handle_format_tag_rsp(uint8_t* p_data); |
| 45 | static void rw_t2t_handle_config_tag_readonly(uint8_t* p_data); |
| 46 | static uint8_t rw_t2t_get_tag_size(uint8_t* p_data); |
| 47 | static void rw_t2t_extract_default_locks_info(void); |
| 48 | static void rw_t2t_update_cb(uint16_t block, uint8_t* p_write_block, |
| 49 | bool b_update_len); |
| 50 | static uint8_t rw_t2t_get_ndef_flags(void); |
| 51 | static uint16_t rw_t2t_get_ndef_max_size(void); |
| 52 | static tNFC_STATUS rw_t2t_read_locks(void); |
| 53 | static tNFC_STATUS rw_t2t_read_ndef_last_block(void); |
| 54 | static void rw_t2t_update_attributes(void); |
| 55 | static void rw_t2t_update_lock_attributes(void); |
| 56 | static bool rw_t2t_is_lock_res_byte(uint16_t index); |
| 57 | static bool rw_t2t_is_read_only_byte(uint16_t index); |
| 58 | static tNFC_STATUS rw_t2t_write_ndef_first_block(uint16_t msg_len, |
| 59 | bool b_update_len); |
| 60 | static tNFC_STATUS rw_t2t_write_ndef_next_block(uint16_t block, |
| 61 | uint16_t msg_len, |
| 62 | bool b_update_len); |
| 63 | static tNFC_STATUS rw_t2t_read_ndef_next_block(uint16_t block); |
| 64 | static tNFC_STATUS rw_t2t_add_terminator_tlv(void); |
| 65 | static bool rw_t2t_is_read_before_write_block(uint16_t block, |
| 66 | uint16_t* p_block_to_read); |
| 67 | static tNFC_STATUS rw_t2t_set_cc(uint8_t tms); |
| 68 | static tNFC_STATUS rw_t2t_set_lock_tlv(uint16_t addr, uint8_t num_dyn_lock_bits, |
| 69 | uint16_t locked_area_size); |
| 70 | static tNFC_STATUS rw_t2t_format_tag(void); |
| 71 | static tNFC_STATUS rw_t2t_soft_lock_tag(void); |
| 72 | static tNFC_STATUS rw_t2t_set_dynamic_lock_bits(uint8_t* p_data); |
| 73 | static void rw_t2t_ntf_tlv_detect_complete(tNFC_STATUS status); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 74 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 75 | const uint8_t rw_t2t_mask_bits[8] = {0x01, 0x02, 0x04, 0x08, |
| 76 | 0x10, 0x20, 0x40, 0x80}; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 77 | |
| 78 | /******************************************************************************* |
| 79 | ** |
| 80 | ** Function rw_t2t_handle_rsp |
| 81 | ** |
| 82 | ** Description This function handles response to command sent during |
| 83 | ** NDEF and other tlv operation |
| 84 | ** |
| 85 | ** Returns None |
| 86 | ** |
| 87 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 88 | void rw_t2t_handle_rsp(uint8_t* p_data) { |
| 89 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 90 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 91 | if (p_t2t->substate == RW_T2T_SUBSTATE_WAIT_READ_CC) { |
| 92 | p_t2t->b_read_hdr = true; |
| 93 | memcpy(p_t2t->tag_hdr, p_data, T2T_READ_DATA_LEN); |
| 94 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 95 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 96 | switch (p_t2t->state) { |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 97 | case RW_T2T_STATE_DETECT_TLV: |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 98 | if (p_t2t->tlv_detect == TAG_LOCK_CTRL_TLV) { |
| 99 | if (p_t2t->substate == RW_T2T_SUBSTATE_WAIT_READ_CC) { |
| 100 | rw_t2t_handle_cc_read_rsp(); |
| 101 | } else if (p_t2t->substate == RW_T2T_SUBSTATE_WAIT_READ_LOCKS) { |
| 102 | rw_t2t_handle_lock_read_rsp(p_data); |
| 103 | } else { |
| 104 | rw_t2t_handle_tlv_detect_rsp(p_data); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 105 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 106 | } else if (p_t2t->tlv_detect == TAG_NDEF_TLV) { |
| 107 | if (p_t2t->substate == RW_T2T_SUBSTATE_WAIT_READ_CC) { |
| 108 | if (p_t2t->tag_hdr[T2T_CC0_NMN_BYTE] == T2T_CC0_NMN) { |
| 109 | rw_t2t_handle_cc_read_rsp(); |
| 110 | } else { |
| 111 | RW_TRACE_WARNING3( |
| 112 | "NDEF Detection failed!, CC[0]: 0x%02x, CC[1]: 0x%02x, CC[3]: " |
| 113 | "0x%02x", |
| 114 | p_t2t->tag_hdr[T2T_CC0_NMN_BYTE], |
| 115 | p_t2t->tag_hdr[T2T_CC1_VNO_BYTE], |
| 116 | p_t2t->tag_hdr[T2T_CC3_RWA_BYTE]); |
| 117 | rw_t2t_ntf_tlv_detect_complete(NFC_STATUS_FAILED); |
| 118 | } |
| 119 | } else if (p_t2t->substate == RW_T2T_SUBSTATE_WAIT_READ_LOCKS) { |
| 120 | rw_t2t_handle_lock_read_rsp(p_data); |
| 121 | } else { |
| 122 | rw_t2t_handle_tlv_detect_rsp(p_data); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 123 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 124 | } else { |
| 125 | if (p_t2t->substate == RW_T2T_SUBSTATE_WAIT_READ_CC) { |
| 126 | rw_t2t_handle_cc_read_rsp(); |
| 127 | } else { |
| 128 | rw_t2t_handle_tlv_detect_rsp(p_data); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 129 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 130 | } |
| 131 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 132 | |
| 133 | case RW_T2T_STATE_SET_TAG_RO: |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 134 | rw_t2t_handle_config_tag_readonly(p_data); |
| 135 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 136 | |
| 137 | case RW_T2T_STATE_FORMAT_TAG: |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 138 | rw_t2t_handle_format_tag_rsp(p_data); |
| 139 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 140 | |
| 141 | case RW_T2T_STATE_READ_NDEF: |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 142 | rw_t2t_handle_ndef_read_rsp(p_data); |
| 143 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 144 | |
| 145 | case RW_T2T_STATE_WRITE_NDEF: |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 146 | rw_t2t_handle_ndef_write_rsp(p_data); |
| 147 | break; |
| 148 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 149 | } |
| 150 | |
| 151 | /******************************************************************************* |
| 152 | ** |
| 153 | ** Function rw_t2t_info_to_event |
| 154 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame] | 155 | ** Description This function returns RW event code based on the current |
| 156 | ** state |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 157 | ** |
| 158 | ** Returns RW event code |
| 159 | ** |
| 160 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 161 | tRW_EVENT rw_t2t_info_to_event(const tT2T_CMD_RSP_INFO* p_info) { |
| 162 | tRW_EVENT rw_event; |
| 163 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 164 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 165 | switch (p_t2t->state) { |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 166 | case RW_T2T_STATE_DETECT_TLV: |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 167 | if (p_t2t->tlv_detect == TAG_NDEF_TLV) |
| 168 | rw_event = RW_T2T_NDEF_DETECT_EVT; |
| 169 | else |
| 170 | rw_event = RW_T2T_TLV_DETECT_EVT; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 171 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 172 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 173 | |
| 174 | case RW_T2T_STATE_READ_NDEF: |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 175 | rw_event = RW_T2T_NDEF_READ_EVT; |
| 176 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 177 | |
| 178 | case RW_T2T_STATE_WRITE_NDEF: |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 179 | rw_event = RW_T2T_NDEF_WRITE_EVT; |
| 180 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 181 | |
| 182 | case RW_T2T_STATE_SET_TAG_RO: |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 183 | rw_event = RW_T2T_SET_TAG_RO_EVT; |
| 184 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 185 | |
| 186 | case RW_T2T_STATE_CHECK_PRESENCE: |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 187 | rw_event = RW_T2T_PRESENCE_CHECK_EVT; |
| 188 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 189 | |
| 190 | case RW_T2T_STATE_FORMAT_TAG: |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 191 | rw_event = RW_T2T_FORMAT_CPLT_EVT; |
| 192 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 193 | |
| 194 | default: |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 195 | rw_event = t2t_info_to_evt(p_info); |
| 196 | break; |
| 197 | } |
| 198 | return rw_event; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 199 | } |
| 200 | |
| 201 | /******************************************************************************* |
| 202 | ** |
| 203 | ** Function rw_t2t_handle_cc_read_rsp |
| 204 | ** |
| 205 | ** Description Handle read cc bytes |
| 206 | ** |
| 207 | ** Returns none |
| 208 | ** |
| 209 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 210 | static void rw_t2t_handle_cc_read_rsp(void) { |
| 211 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 212 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 213 | if (((p_t2t->tag_hdr[T2T_CC3_RWA_BYTE] != T2T_CC3_RWA_RW) && |
| 214 | (p_t2t->tag_hdr[T2T_CC3_RWA_BYTE] != T2T_CC3_RWA_RO)) || |
| 215 | ((p_t2t->tag_hdr[T2T_CC1_VNO_BYTE] != T2T_CC1_LEGACY_VNO) && |
| 216 | (p_t2t->tag_hdr[T2T_CC1_VNO_BYTE] != T2T_CC1_VNO) && |
| 217 | (p_t2t->tag_hdr[T2T_CC1_VNO_BYTE] != T2T_CC1_NEW_VNO))) { |
| 218 | /* Invalid Version number or RWA byte */ |
| 219 | rw_t2t_ntf_tlv_detect_complete(NFC_STATUS_FAILED); |
| 220 | return; |
| 221 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 222 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 223 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_TLV_DETECT; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 224 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 225 | if (rw_t2t_read((uint16_t)T2T_FIRST_DATA_BLOCK) != NFC_STATUS_OK) { |
| 226 | rw_t2t_ntf_tlv_detect_complete(NFC_STATUS_FAILED); |
| 227 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 228 | } |
| 229 | |
| 230 | /******************************************************************************* |
| 231 | ** |
| 232 | ** Function rw_t2t_ntf_tlv_detect_complete |
| 233 | ** |
| 234 | ** Description Notify TLV detection complete to upper layer |
| 235 | ** |
| 236 | ** Returns none |
| 237 | ** |
| 238 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 239 | static void rw_t2t_ntf_tlv_detect_complete(tNFC_STATUS status) { |
| 240 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 241 | tRW_DETECT_NDEF_DATA ndef_data = { |
| 242 | 0, |
| 243 | }; |
| 244 | tRW_DETECT_TLV_DATA tlv_data; |
| 245 | tRW_T2T_DETECT evt_data; |
| 246 | uint8_t xx; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 247 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 248 | if (p_t2t->tlv_detect == TAG_NDEF_TLV) { |
| 249 | /* Notify upper layer the result of NDEF detect op */ |
| 250 | ndef_data.status = status; |
| 251 | ndef_data.protocol = NFC_PROTOCOL_T2T; |
| 252 | ndef_data.flags = rw_t2t_get_ndef_flags(); |
| 253 | ndef_data.cur_size = p_t2t->ndef_msg_len; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 254 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 255 | if (status == NFC_STATUS_OK) ndef_data.flags |= RW_NDEF_FL_FORMATED; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 256 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 257 | if (p_t2t->tag_hdr[T2T_CC3_RWA_BYTE] == T2T_CC3_RWA_RW) |
| 258 | ndef_data.max_size = (uint32_t)rw_t2t_get_ndef_max_size(); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 259 | else |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 260 | ndef_data.max_size = ndef_data.cur_size; |
| 261 | |
| 262 | if (ndef_data.max_size < ndef_data.cur_size) { |
| 263 | ndef_data.flags |= RW_NDEF_FL_READ_ONLY; |
| 264 | ndef_data.max_size = ndef_data.cur_size; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 265 | } |
| 266 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 267 | if (!(ndef_data.flags & RW_NDEF_FL_READ_ONLY)) { |
| 268 | ndef_data.flags |= RW_NDEF_FL_SOFT_LOCKABLE; |
| 269 | if (status == NFC_STATUS_OK) ndef_data.flags |= RW_NDEF_FL_HARD_LOCKABLE; |
| 270 | } |
| 271 | |
| 272 | rw_t2t_handle_op_complete(); |
| 273 | (*rw_cb.p_cback)(RW_T2T_NDEF_DETECT_EVT, (tRW_DATA*)&ndef_data); |
| 274 | } else if (p_t2t->tlv_detect == TAG_PROPRIETARY_TLV) { |
| 275 | evt_data.msg_len = p_t2t->prop_msg_len; |
| 276 | evt_data.status = status; |
| 277 | rw_t2t_handle_op_complete(); |
| 278 | (*rw_cb.p_cback)(RW_T2T_TLV_DETECT_EVT, (tRW_DATA*)&evt_data); |
| 279 | } else { |
| 280 | /* Notify upper layer the result of Lock/Mem TLV detect op */ |
| 281 | tlv_data.protocol = NFC_PROTOCOL_T2T; |
| 282 | if (p_t2t->tlv_detect == TAG_LOCK_CTRL_TLV) { |
| 283 | tlv_data.num_bytes = p_t2t->num_lockbytes; |
| 284 | } else { |
| 285 | tlv_data.num_bytes = 0; |
| 286 | for (xx = 0; xx < p_t2t->num_mem_tlvs; xx++) { |
| 287 | tlv_data.num_bytes += p_t2t->mem_tlv[p_t2t->num_mem_tlvs].num_bytes; |
| 288 | } |
| 289 | } |
| 290 | tlv_data.status = status; |
| 291 | rw_t2t_handle_op_complete(); |
| 292 | (*rw_cb.p_cback)(RW_T2T_TLV_DETECT_EVT, (tRW_DATA*)&tlv_data); |
| 293 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 294 | } |
| 295 | |
| 296 | /******************************************************************************* |
| 297 | ** |
| 298 | ** Function rw_t2t_handle_lock_read_rsp |
| 299 | ** |
| 300 | ** Description Handle response to reading lock bytes |
| 301 | ** |
| 302 | ** Returns none |
| 303 | ** |
| 304 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 305 | static void rw_t2t_handle_lock_read_rsp(uint8_t* p_data) { |
| 306 | uint8_t updated_lock_byte; |
| 307 | uint8_t num_locks; |
| 308 | uint8_t offset = 0; |
| 309 | uint16_t lock_offset; |
| 310 | uint16_t base_lock_offset = 0; |
| 311 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 312 | uint16_t block; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 313 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 314 | /* Prepare NDEF/TLV attributes (based on current op) for sending response to |
| 315 | * upper layer */ |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 316 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 317 | num_locks = 0; |
| 318 | updated_lock_byte = 0; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 319 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 320 | /* Extract all lock bytes present in the read 16 bytes |
| 321 | * but atleast one lock byte (base lock) should be present in the read 16 |
| 322 | * bytes */ |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 323 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 324 | while (num_locks < p_t2t->num_lockbytes) { |
| 325 | if (p_t2t->lockbyte[num_locks].b_lock_read == false) { |
| 326 | lock_offset = |
| 327 | p_t2t->lock_tlv[p_t2t->lockbyte[num_locks].tlv_index].offset + |
| 328 | p_t2t->lockbyte[num_locks].byte_index; |
| 329 | if (updated_lock_byte == 0) { |
| 330 | /* The offset of the first lock byte present in the 16 bytes read using |
| 331 | * READ command */ |
| 332 | base_lock_offset = lock_offset; |
| 333 | /* Block number used to read may not be the block where lock offset is |
| 334 | * present */ |
| 335 | offset = (uint8_t)(lock_offset - (p_t2t->block_read * T2T_BLOCK_SIZE)); |
| 336 | /* Update the lock byte value in the control block */ |
| 337 | p_t2t->lockbyte[num_locks].lock_byte = p_data[offset]; |
| 338 | p_t2t->lockbyte[num_locks].b_lock_read = true; |
| 339 | updated_lock_byte++; |
| 340 | } else if (lock_offset > base_lock_offset) { |
| 341 | /* Atleast one lock byte will get updated in the control block */ |
| 342 | if ((lock_offset - base_lock_offset + offset) < T2T_READ_DATA_LEN) { |
| 343 | /* And this lock byte is also present in the read data */ |
| 344 | p_t2t->lockbyte[num_locks].lock_byte = |
| 345 | p_data[lock_offset - base_lock_offset + offset]; |
| 346 | p_t2t->lockbyte[num_locks].b_lock_read = true; |
| 347 | updated_lock_byte++; |
| 348 | } else { |
| 349 | /* This lock byte is not present in the read data */ |
| 350 | block = (uint16_t)(lock_offset / T2T_BLOCK_LEN); |
| 351 | block -= block % T2T_READ_BLOCKS; |
| 352 | /* send READ command to read this lock byte */ |
| 353 | if (NFC_STATUS_OK != rw_t2t_read((uint16_t)block)) { |
| 354 | /* Unable to send Read command, notify failure status to upper layer |
| 355 | */ |
| 356 | rw_t2t_ntf_tlv_detect_complete(NFC_STATUS_FAILED); |
| 357 | } |
| 358 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 359 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 360 | } else { |
| 361 | /* This Lock byte is not present in the read 16 bytes |
| 362 | * send READ command to read the lock byte */ |
| 363 | if (NFC_STATUS_OK != |
| 364 | rw_t2t_read((uint16_t)(lock_offset / T2T_BLOCK_LEN))) { |
| 365 | /* Unable to send Read command, notify failure status to upper layer |
| 366 | */ |
| 367 | rw_t2t_ntf_tlv_detect_complete(NFC_STATUS_FAILED); |
| 368 | } |
| 369 | break; |
| 370 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 371 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 372 | num_locks++; |
| 373 | } |
| 374 | if (num_locks == p_t2t->num_lockbytes) { |
| 375 | /* All locks are read, notify upper layer */ |
| 376 | rw_t2t_update_lock_attributes(); |
| 377 | rw_t2t_ntf_tlv_detect_complete(NFC_STATUS_OK); |
| 378 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 379 | } |
| 380 | |
| 381 | /******************************************************************************* |
| 382 | ** |
| 383 | ** Function rw_t2t_handle_tlv_detect_rsp |
| 384 | ** |
| 385 | ** Description Handle TLV detection. |
| 386 | ** |
| 387 | ** Returns none |
| 388 | ** |
| 389 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 390 | static void rw_t2t_handle_tlv_detect_rsp(uint8_t* p_data) { |
| 391 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 392 | uint16_t offset; |
| 393 | uint16_t len = 0; |
| 394 | bool failed = false; |
| 395 | bool found = false; |
| 396 | tRW_EVENT event; |
| 397 | uint8_t index; |
| 398 | uint8_t count = 0; |
| 399 | uint8_t xx; |
| 400 | tNFC_STATUS status; |
| 401 | tT2T_CMD_RSP_INFO* p_cmd_rsp_info = |
| 402 | (tT2T_CMD_RSP_INFO*)rw_cb.tcb.t2t.p_cmd_rsp_info; |
| 403 | uint8_t tlvtype = p_t2t->tlv_detect; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 404 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 405 | if (p_t2t->work_offset == 0) { |
| 406 | /* Skip UID,Static Lock block,CC*/ |
| 407 | p_t2t->work_offset = T2T_FIRST_DATA_BLOCK * T2T_BLOCK_LEN; |
| 408 | p_t2t->b_read_data = true; |
| 409 | memcpy(p_t2t->tag_data, p_data, T2T_READ_DATA_LEN); |
| 410 | } |
| 411 | |
| 412 | p_t2t->segment = 0; |
| 413 | |
| 414 | for (offset = 0; offset < T2T_READ_DATA_LEN && !failed && !found;) { |
| 415 | if (rw_t2t_is_lock_res_byte((uint16_t)(p_t2t->work_offset + offset)) == |
| 416 | true) { |
| 417 | /* Skip locks, reserved bytes while searching for TLV */ |
| 418 | offset++; |
| 419 | continue; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 420 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 421 | switch (p_t2t->substate) { |
| 422 | case RW_T2T_SUBSTATE_WAIT_TLV_DETECT: |
| 423 | /* Search for the tlv */ |
| 424 | p_t2t->found_tlv = p_data[offset++]; |
| 425 | switch (p_t2t->found_tlv) { |
| 426 | case TAG_NULL_TLV: /* May be used for padding. SHALL ignore this */ |
| 427 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 428 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 429 | case TAG_NDEF_TLV: |
| 430 | if (tlvtype == TAG_NDEF_TLV) { |
| 431 | /* NDEF Detected, now collect NDEF Attributes including NDEF |
| 432 | * Length */ |
| 433 | index = (offset % T2T_BLOCK_SIZE); |
| 434 | /* Backup ndef first block */ |
| 435 | memcpy(p_t2t->ndef_first_block, &p_data[offset - index], index); |
| 436 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_FIND_LEN_FIELD_LEN; |
| 437 | } else if (tlvtype == TAG_PROPRIETARY_TLV) { |
| 438 | /* Proprietary TLV can exist after NDEF Tlv so we continue |
| 439 | * searching */ |
| 440 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_FIND_LEN_FIELD_LEN; |
| 441 | } else if (((tlvtype == TAG_LOCK_CTRL_TLV) && |
| 442 | (p_t2t->num_lockbytes > 0)) || |
| 443 | ((tlvtype == TAG_MEM_CTRL_TLV) && |
| 444 | (p_t2t->num_mem_tlvs > 0))) { |
| 445 | /* Lock / Memory control tlv cannot exist after NDEF TLV |
| 446 | * So when NDEF is found, we stop searching for Lock and Memory |
| 447 | * control tlv */ |
| 448 | found = true; |
| 449 | } else { |
| 450 | /* While searching for Lock / Memory control tlv, if NDEF TLV is |
| 451 | * found |
| 452 | * first then our search for Lock /Memory control tlv failed and |
| 453 | * we stop here */ |
| 454 | failed = true; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 455 | } |
| 456 | break; |
| 457 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 458 | case TAG_LOCK_CTRL_TLV: |
| 459 | case TAG_MEM_CTRL_TLV: |
| 460 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_READ_TLV_LEN0; |
| 461 | break; |
| 462 | |
| 463 | case TAG_PROPRIETARY_TLV: |
| 464 | if (tlvtype == TAG_PROPRIETARY_TLV) { |
| 465 | index = (offset % T2T_BLOCK_SIZE); |
| 466 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_FIND_LEN_FIELD_LEN; |
| 467 | } else { |
| 468 | /* NDEF/LOCK/MEM TLV can exist after Proprietary Tlv so we |
| 469 | * continue searching, skiping proprietary tlv */ |
| 470 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_FIND_LEN_FIELD_LEN; |
| 471 | } |
| 472 | break; |
| 473 | |
| 474 | case TAG_TERMINATOR_TLV: /* Last TLV block in the data area. Must be |
| 475 | no NDEF nessage */ |
| 476 | if (((tlvtype == TAG_LOCK_CTRL_TLV) && |
| 477 | (p_t2t->num_lockbytes > 0)) || |
| 478 | ((tlvtype == TAG_MEM_CTRL_TLV) && (p_t2t->num_mem_tlvs > 0))) { |
| 479 | /* No more Lock/Memory TLV control tlv in the tag, so stop |
| 480 | * searching */ |
| 481 | found = true; |
| 482 | } else { |
| 483 | /* NDEF/Lock/Memory/Proprietary TLV cannot exist after Terminator |
| 484 | * Tlv */ |
| 485 | failed = true; |
| 486 | } |
| 487 | break; |
| 488 | default: |
| 489 | failed = true; |
| 490 | } |
| 491 | break; |
| 492 | |
| 493 | case RW_T2T_SUBSTATE_WAIT_FIND_LEN_FIELD_LEN: |
| 494 | len = p_data[offset]; |
| 495 | switch (p_t2t->found_tlv) { |
| 496 | case TAG_NDEF_TLV: |
| 497 | p_t2t->ndef_header_offset = offset + p_t2t->work_offset; |
| 498 | if (len == TAG_LONG_NDEF_LEN_FIELD_BYTE0) { |
| 499 | /* The next two bytes constitute length bytes */ |
| 500 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_READ_TLV_LEN0; |
| 501 | } else { |
| 502 | /* one byte length field */ |
| 503 | p_t2t->ndef_msg_len = len; |
| 504 | p_t2t->bytes_count = p_t2t->ndef_msg_len; |
| 505 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_READ_TLV_VALUE; |
| 506 | } |
| 507 | break; |
| 508 | |
| 509 | case TAG_PROPRIETARY_TLV: |
| 510 | if (len == T2T_LONG_NDEF_LEN_FIELD_BYTE0) { |
| 511 | /* The next two bytes constitute length bytes */ |
| 512 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_READ_TLV_LEN0; |
| 513 | } else { |
| 514 | /* one byte length field */ |
| 515 | p_t2t->prop_msg_len = len; |
| 516 | p_t2t->bytes_count = p_t2t->prop_msg_len; |
| 517 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_READ_TLV_VALUE; |
| 518 | } |
| 519 | break; |
| 520 | } |
| 521 | offset++; |
| 522 | break; |
| 523 | |
| 524 | case RW_T2T_SUBSTATE_WAIT_READ_TLV_LEN0: |
| 525 | switch (p_t2t->found_tlv) { |
| 526 | case TAG_LOCK_CTRL_TLV: |
| 527 | case TAG_MEM_CTRL_TLV: |
| 528 | |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 529 | len = p_data[offset]; |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 530 | if (len == TAG_DEFAULT_TLV_LEN) { |
| 531 | /* Valid Lock control TLV */ |
| 532 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_READ_TLV_VALUE; |
| 533 | p_t2t->bytes_count = TAG_DEFAULT_TLV_LEN; |
| 534 | } else if (((tlvtype == TAG_LOCK_CTRL_TLV) && |
| 535 | (p_t2t->num_lockbytes > 0)) || |
| 536 | ((tlvtype == TAG_MEM_CTRL_TLV) && |
| 537 | (p_t2t->num_mem_tlvs > 0))) { |
| 538 | /* Stop searching for Lock/ Memory control tlv */ |
| 539 | found = true; |
| 540 | } else { |
| 541 | failed = true; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 542 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 543 | break; |
| 544 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 545 | case TAG_NDEF_TLV: |
| 546 | case TAG_PROPRIETARY_TLV: |
| 547 | /* The first length byte */ |
| 548 | p_t2t->bytes_count = (uint8_t)p_data[offset]; |
| 549 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_READ_TLV_LEN1; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 550 | break; |
| 551 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 552 | offset++; |
| 553 | break; |
| 554 | |
| 555 | case RW_T2T_SUBSTATE_WAIT_READ_TLV_LEN1: |
| 556 | /* Prepare NDEF Message length */ |
| 557 | p_t2t->bytes_count = (p_t2t->bytes_count << 8) + p_data[offset]; |
| 558 | if (p_t2t->found_tlv == TAG_NDEF_TLV) { |
| 559 | p_t2t->ndef_msg_len = p_t2t->bytes_count; |
| 560 | } else if (p_t2t->found_tlv == TAG_PROPRIETARY_TLV) { |
| 561 | p_t2t->prop_msg_len = p_t2t->bytes_count; |
| 562 | } |
| 563 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_READ_TLV_VALUE; |
| 564 | offset++; |
| 565 | break; |
| 566 | |
| 567 | case RW_T2T_SUBSTATE_WAIT_READ_TLV_VALUE: |
| 568 | switch (p_t2t->found_tlv) { |
| 569 | case TAG_NDEF_TLV: |
| 570 | if ((p_t2t->bytes_count == p_t2t->ndef_msg_len) && |
| 571 | (tlvtype == TAG_NDEF_TLV)) { |
| 572 | /* The first byte offset after length field */ |
| 573 | p_t2t->ndef_msg_offset = offset + p_t2t->work_offset; |
| 574 | } |
| 575 | /* Reduce number of NDEF bytes remaining to pass over NDEF TLV */ |
| 576 | if (p_t2t->bytes_count > 0) p_t2t->bytes_count--; |
| 577 | |
| 578 | if (tlvtype == TAG_NDEF_TLV) { |
| 579 | found = true; |
| 580 | p_t2t->ndef_status = T2T_NDEF_DETECTED; |
| 581 | } else if (p_t2t->bytes_count == 0) { |
| 582 | /* Next byte could be a different TLV */ |
| 583 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_TLV_DETECT; |
| 584 | } |
| 585 | break; |
| 586 | |
| 587 | case TAG_LOCK_CTRL_TLV: |
| 588 | p_t2t->bytes_count--; |
| 589 | if ((tlvtype == TAG_LOCK_CTRL_TLV) || (tlvtype == TAG_NDEF_TLV)) { |
| 590 | /* Collect Lock TLV */ |
| 591 | p_t2t->tlv_value[2 - p_t2t->bytes_count] = p_data[offset]; |
| 592 | if (p_t2t->bytes_count == 0) { |
| 593 | /* Lock TLV is collected and buffered in tlv_value, now decode |
| 594 | * it */ |
| 595 | p_t2t->lock_tlv[p_t2t->num_lock_tlvs].offset = |
| 596 | (p_t2t->tlv_value[0] >> 4) & 0x0F; |
| 597 | p_t2t->lock_tlv[p_t2t->num_lock_tlvs].offset *= |
| 598 | (uint8_t)tags_pow(2, p_t2t->tlv_value[2] & 0x0F); |
| 599 | p_t2t->lock_tlv[p_t2t->num_lock_tlvs].offset += |
| 600 | p_t2t->tlv_value[0] & 0x0F; |
| 601 | p_t2t->lock_tlv[p_t2t->num_lock_tlvs].bytes_locked_per_bit = |
| 602 | (uint8_t)tags_pow(2, ((p_t2t->tlv_value[2] & 0xF0) >> 4)); |
| 603 | p_t2t->lock_tlv[p_t2t->num_lock_tlvs].num_bits = |
| 604 | p_t2t->tlv_value[1]; |
| 605 | count = p_t2t->tlv_value[1] / 8 + |
| 606 | ((p_t2t->tlv_value[1] % 8 != 0) ? 1 : 0); |
| 607 | |
| 608 | /* Extract lockbytes info addressed by this Lock TLV */ |
| 609 | xx = 0; |
| 610 | while (xx < count) { |
| 611 | p_t2t->lockbyte[p_t2t->num_lockbytes].tlv_index = |
| 612 | p_t2t->num_lock_tlvs; |
| 613 | p_t2t->lockbyte[p_t2t->num_lockbytes].byte_index = xx; |
| 614 | p_t2t->lockbyte[p_t2t->num_lockbytes].b_lock_read = false; |
| 615 | xx++; |
| 616 | p_t2t->num_lockbytes++; |
| 617 | } |
| 618 | p_t2t->num_lock_tlvs++; |
| 619 | rw_t2t_update_attributes(); |
| 620 | /* Next byte could be a different TLV */ |
| 621 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_TLV_DETECT; |
| 622 | } |
| 623 | } else { |
| 624 | /* If not looking for lock/ndef tlv, just skip this Lock TLV */ |
| 625 | if (p_t2t->bytes_count == 0) { |
| 626 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_TLV_DETECT; |
| 627 | } |
| 628 | } |
| 629 | break; |
| 630 | |
| 631 | case TAG_MEM_CTRL_TLV: |
| 632 | p_t2t->bytes_count--; |
| 633 | if ((tlvtype == TAG_MEM_CTRL_TLV) || (tlvtype == TAG_NDEF_TLV)) { |
| 634 | p_t2t->tlv_value[2 - p_t2t->bytes_count] = p_data[offset]; |
| 635 | if (p_t2t->bytes_count == 0) { |
| 636 | if (p_t2t->num_mem_tlvs >= RW_T2T_MAX_MEM_TLVS) { |
| 637 | RW_TRACE_ERROR0( |
| 638 | "rw_t2t_handle_tlv_detect_rsp - Maximum buffer allocated " |
| 639 | "for Memory tlv has reached"); |
| 640 | failed = true; |
| 641 | } else { |
| 642 | /* Extract memory control tlv */ |
| 643 | p_t2t->mem_tlv[p_t2t->num_mem_tlvs].offset = |
| 644 | (p_t2t->tlv_value[0] >> 4) & 0x0F; |
| 645 | p_t2t->mem_tlv[p_t2t->num_mem_tlvs].offset *= |
| 646 | (uint8_t)tags_pow(2, p_t2t->tlv_value[2] & 0x0F); |
| 647 | p_t2t->mem_tlv[p_t2t->num_mem_tlvs].offset += |
| 648 | p_t2t->tlv_value[0] & 0x0F; |
| 649 | p_t2t->mem_tlv[p_t2t->num_mem_tlvs].num_bytes = |
| 650 | p_t2t->tlv_value[1]; |
| 651 | p_t2t->num_mem_tlvs++; |
| 652 | rw_t2t_update_attributes(); |
| 653 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_TLV_DETECT; |
| 654 | } |
| 655 | } |
| 656 | } else { |
| 657 | if (p_t2t->bytes_count == 0) { |
| 658 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_TLV_DETECT; |
| 659 | } |
| 660 | } |
| 661 | break; |
| 662 | |
| 663 | case TAG_PROPRIETARY_TLV: |
| 664 | p_t2t->bytes_count--; |
| 665 | if (tlvtype == TAG_PROPRIETARY_TLV) { |
| 666 | found = true; |
| 667 | p_t2t->prop_msg_len = len; |
| 668 | } else { |
| 669 | if (p_t2t->bytes_count == 0) { |
| 670 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_TLV_DETECT; |
| 671 | } |
| 672 | } |
| 673 | break; |
| 674 | } |
| 675 | offset++; |
| 676 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 677 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 678 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 679 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 680 | p_t2t->work_offset += T2T_READ_DATA_LEN; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 681 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 682 | event = rw_t2t_info_to_event(p_cmd_rsp_info); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 683 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 684 | /* If not found and not failed, read next block and search tlv */ |
| 685 | if (!found && !failed) { |
| 686 | if (p_t2t->work_offset >= |
| 687 | (p_t2t->tag_hdr[T2T_CC2_TMS_BYTE] * T2T_TMS_TAG_FACTOR)) { |
| 688 | if (((tlvtype == TAG_LOCK_CTRL_TLV) && (p_t2t->num_lockbytes > 0)) || |
| 689 | ((tlvtype == TAG_MEM_CTRL_TLV) && (p_t2t->num_mem_tlvs > 0))) { |
| 690 | found = true; |
| 691 | } else { |
| 692 | failed = true; |
| 693 | } |
| 694 | } else { |
| 695 | if (rw_t2t_read((uint16_t)((p_t2t->work_offset / T2T_BLOCK_LEN) + |
| 696 | T2T_FIRST_DATA_BLOCK)) != NFC_STATUS_OK) |
| 697 | failed = true; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 698 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 699 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 700 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 701 | if (failed || found) { |
| 702 | if (tlvtype == TAG_LOCK_CTRL_TLV) { |
| 703 | /* Incase no Lock control tlv is present then look for default dynamic |
| 704 | * lock bytes */ |
| 705 | rw_t2t_extract_default_locks_info(); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 706 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 707 | /* Send command to read the dynamic lock bytes */ |
| 708 | status = rw_t2t_read_locks(); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 709 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 710 | if (status != NFC_STATUS_CONTINUE) { |
| 711 | /* If unable to read a lock/all locks read, notify upper layer */ |
| 712 | rw_t2t_update_lock_attributes(); |
| 713 | rw_t2t_ntf_tlv_detect_complete(status); |
| 714 | } |
| 715 | } else if (tlvtype == TAG_NDEF_TLV) { |
| 716 | rw_t2t_extract_default_locks_info(); |
| 717 | |
| 718 | if (failed) { |
| 719 | rw_t2t_ntf_tlv_detect_complete(NFC_STATUS_FAILED); |
| 720 | } else { |
| 721 | /* NDEF present,Send command to read the dynamic lock bytes */ |
| 722 | status = rw_t2t_read_locks(); |
| 723 | if (status != NFC_STATUS_CONTINUE) { |
| 724 | /* If unable to read a lock/all locks read, notify upper layer */ |
| 725 | rw_t2t_update_lock_attributes(); |
| 726 | rw_t2t_ntf_tlv_detect_complete(status); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 727 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 728 | } |
| 729 | } else { |
| 730 | /* Notify Memory/ Proprietary tlv detect result */ |
| 731 | status = failed ? NFC_STATUS_FAILED : NFC_STATUS_OK; |
| 732 | rw_t2t_ntf_tlv_detect_complete(status); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 733 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 734 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 735 | } |
| 736 | |
| 737 | /******************************************************************************* |
| 738 | ** |
| 739 | ** Function rw_t2t_read_locks |
| 740 | ** |
| 741 | ** Description This function will send command to read next unread locks |
| 742 | ** |
| 743 | ** Returns NFC_STATUS_OK, if all locks are read successfully |
| 744 | ** NFC_STATUS_FAILED, if reading locks failed |
| 745 | ** NFC_STATUS_CONTINUE, if reading locks is in progress |
| 746 | ** |
| 747 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 748 | tNFC_STATUS rw_t2t_read_locks(void) { |
| 749 | uint8_t num_locks = 0; |
| 750 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 751 | tNFC_STATUS status = NFC_STATUS_CONTINUE; |
| 752 | uint16_t offset; |
| 753 | uint16_t block; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 754 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 755 | if ((p_t2t->tag_hdr[T2T_CC3_RWA_BYTE] != T2T_CC3_RWA_RW) || |
| 756 | (p_t2t->skip_dyn_locks)) { |
| 757 | /* Skip reading dynamic lock bytes if CC is set as Read only or layer above |
| 758 | * instructs to skip */ |
| 759 | while (num_locks < p_t2t->num_lockbytes) { |
| 760 | p_t2t->lockbyte[num_locks].lock_byte = 0x00; |
| 761 | p_t2t->lockbyte[num_locks].b_lock_read = true; |
| 762 | num_locks++; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 763 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 764 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 765 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 766 | while (num_locks < p_t2t->num_lockbytes) { |
| 767 | if (p_t2t->lockbyte[num_locks].b_lock_read == false) { |
| 768 | /* Send Read command to read the first un read locks */ |
| 769 | offset = p_t2t->lock_tlv[p_t2t->lockbyte[num_locks].tlv_index].offset + |
| 770 | p_t2t->lockbyte[num_locks].byte_index; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 771 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 772 | /* Read 16 bytes where this lock byte is present */ |
| 773 | block = (uint16_t)(offset / T2T_BLOCK_LEN); |
| 774 | block -= block % T2T_READ_BLOCKS; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 775 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 776 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_READ_LOCKS; |
| 777 | /* send READ8 command */ |
| 778 | if ((status = rw_t2t_read((uint16_t)block)) == NFC_STATUS_OK) { |
| 779 | /* Reading Locks */ |
| 780 | status = NFC_STATUS_CONTINUE; |
| 781 | } else { |
| 782 | status = NFC_STATUS_FAILED; |
| 783 | } |
| 784 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 785 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 786 | num_locks++; |
| 787 | } |
| 788 | if (num_locks == p_t2t->num_lockbytes) { |
| 789 | /* All locks are read */ |
| 790 | status = NFC_STATUS_OK; |
| 791 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 792 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 793 | return status; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 794 | } |
| 795 | |
| 796 | /******************************************************************************* |
| 797 | ** |
| 798 | ** Function rw_t2t_extract_default_locks_info |
| 799 | ** |
| 800 | ** Description This function will prepare lockbytes information for default |
| 801 | ** locks present in the tag in the absence of lock control tlv. |
| 802 | ** Adding a virtual lock control tlv for these lock bytes for |
| 803 | ** easier manipulation. |
| 804 | ** |
| 805 | ** Returns None |
| 806 | ** |
| 807 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 808 | void rw_t2t_extract_default_locks_info(void) { |
| 809 | uint8_t num_dynamic_lock_bits; |
| 810 | uint8_t num_dynamic_lock_bytes; |
| 811 | uint8_t xx; |
| 812 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 813 | const tT2T_INIT_TAG* p_ret; |
| 814 | uint8_t bytes_locked_per_lock_bit = T2T_DEFAULT_LOCK_BLPB; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 815 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 816 | if ((p_t2t->num_lock_tlvs == 0) && |
| 817 | (p_t2t->tag_hdr[T2T_CC2_TMS_BYTE] > T2T_CC2_TMS_STATIC)) { |
| 818 | /* No Lock control tlv is detected. Indicates lock bytes are present in |
| 819 | * default location */ |
| 820 | /* Add a virtual Lock tlv to map this default lock location */ |
| 821 | if ((p_ret = t2t_tag_init_data(p_t2t->tag_hdr[0], false, 0)) != NULL) |
| 822 | bytes_locked_per_lock_bit = p_ret->default_lock_blpb; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 823 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 824 | num_dynamic_lock_bits = |
| 825 | ((p_t2t->tag_hdr[T2T_CC2_TMS_BYTE] * T2T_TMS_TAG_FACTOR) - |
| 826 | (T2T_STATIC_SIZE - T2T_HEADER_SIZE)) / |
| 827 | bytes_locked_per_lock_bit; |
| 828 | num_dynamic_lock_bytes = num_dynamic_lock_bits / 8; |
| 829 | num_dynamic_lock_bytes += (num_dynamic_lock_bits % 8 == 0) ? 0 : 1; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 830 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 831 | p_t2t->lock_tlv[p_t2t->num_lock_tlvs].offset = |
| 832 | (p_t2t->tag_hdr[T2T_CC2_TMS_BYTE] * T2T_TMS_TAG_FACTOR) + |
| 833 | (T2T_FIRST_DATA_BLOCK * T2T_BLOCK_LEN); |
| 834 | p_t2t->lock_tlv[p_t2t->num_lock_tlvs].bytes_locked_per_bit = |
| 835 | bytes_locked_per_lock_bit; |
| 836 | p_t2t->lock_tlv[p_t2t->num_lock_tlvs].num_bits = num_dynamic_lock_bits; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 837 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 838 | /* Based on tag data size the number of locks present in the default |
| 839 | * location changes */ |
| 840 | for (xx = 0; xx < num_dynamic_lock_bytes; xx++) { |
| 841 | p_t2t->lockbyte[xx].tlv_index = p_t2t->num_lock_tlvs; |
| 842 | p_t2t->lockbyte[xx].byte_index = xx; |
| 843 | p_t2t->lockbyte[xx].b_lock_read = false; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 844 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 845 | p_t2t->num_lockbytes = num_dynamic_lock_bytes; |
| 846 | p_t2t->num_lock_tlvs = 1; |
| 847 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 848 | } |
| 849 | |
| 850 | /******************************************************************************* |
| 851 | ** |
| 852 | ** Function rw_t2t_read_ndef_last_block |
| 853 | ** |
| 854 | ** Description This function will locate and read the last ndef block. |
| 855 | ** The last ndef block refers to the tag block where last byte |
| 856 | ** of new ndef message will reside. Also this function will |
| 857 | ** locate the offset of Terminator TLV based on the size of |
| 858 | ** new NDEF Message |
| 859 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame] | 860 | ** Returns NCI_STATUS_OK, if able to locate last ndef block & read |
| 861 | ** started. Otherwise, error status. |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 862 | ** |
| 863 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 864 | tNFC_STATUS rw_t2t_read_ndef_last_block(void) { |
| 865 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 866 | uint16_t header_len = (p_t2t->new_ndef_msg_len >= T2T_LONG_NDEF_MIN_LEN) |
| 867 | ? T2T_LONG_NDEF_LEN_FIELD_LEN |
| 868 | : T2T_SHORT_NDEF_LEN_FIELD_LEN; |
| 869 | uint16_t num_ndef_bytes; |
| 870 | uint16_t total_ndef_bytes; |
| 871 | uint16_t last_ndef_byte_offset; |
| 872 | uint16_t terminator_tlv_byte_index; |
| 873 | tNFC_STATUS status; |
| 874 | uint16_t block; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 875 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 876 | total_ndef_bytes = header_len + p_t2t->new_ndef_msg_len; |
| 877 | num_ndef_bytes = 0; |
| 878 | last_ndef_byte_offset = p_t2t->ndef_header_offset; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 879 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 880 | /* Locate NDEF final block based on the size of new NDEF Message */ |
| 881 | while (num_ndef_bytes < total_ndef_bytes) { |
| 882 | if (rw_t2t_is_lock_res_byte((uint16_t)(last_ndef_byte_offset)) == false) |
| 883 | num_ndef_bytes++; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 884 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 885 | last_ndef_byte_offset++; |
| 886 | } |
| 887 | p_t2t->ndef_last_block_num = |
| 888 | (uint16_t)((last_ndef_byte_offset - 1) / T2T_BLOCK_SIZE); |
| 889 | block = p_t2t->ndef_last_block_num; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 890 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 891 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_READ_NDEF_LAST_BLOCK; |
| 892 | /* Read NDEF last block before updating */ |
| 893 | if ((status = rw_t2t_read(block)) == NFC_STATUS_OK) { |
| 894 | if ((p_t2t->new_ndef_msg_len + 1) <= p_t2t->max_ndef_msg_len) { |
| 895 | /* Locate Terminator TLV Block */ |
| 896 | total_ndef_bytes++; |
| 897 | terminator_tlv_byte_index = last_ndef_byte_offset; |
| 898 | |
| 899 | while (num_ndef_bytes < total_ndef_bytes) { |
| 900 | if (rw_t2t_is_lock_res_byte((uint16_t)terminator_tlv_byte_index) == |
| 901 | false) |
| 902 | num_ndef_bytes++; |
| 903 | |
| 904 | terminator_tlv_byte_index++; |
| 905 | } |
| 906 | |
| 907 | p_t2t->terminator_byte_index = terminator_tlv_byte_index - 1; |
| 908 | } else { |
| 909 | /* No space for Terminator TLV */ |
| 910 | p_t2t->terminator_byte_index = 0x00; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 911 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 912 | } |
| 913 | return status; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 914 | } |
| 915 | |
| 916 | /******************************************************************************* |
| 917 | ** |
| 918 | ** Function rw_t2t_read_terminator_tlv_block |
| 919 | ** |
| 920 | ** Description This function will read the block where terminator tlv will |
| 921 | ** be added later |
| 922 | ** |
| 923 | ** Returns NCI_STATUS_OK, if read was started. Otherwise, error status. |
| 924 | ** |
| 925 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 926 | tNFC_STATUS rw_t2t_read_terminator_tlv_block(void) { |
| 927 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 928 | tNFC_STATUS status; |
| 929 | uint16_t block; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 930 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 931 | /* Send read command to read base block (Block % 4==0) where this block is |
| 932 | * also read as part of 16 bytes */ |
| 933 | block = p_t2t->terminator_byte_index / T2T_BLOCK_SIZE; |
| 934 | block -= block % T2T_READ_BLOCKS; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 935 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 936 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_READ_TERM_TLV_BLOCK; |
| 937 | /* Read the block where Terminator TLV may be added later during NDEF Write |
| 938 | * operation */ |
| 939 | status = rw_t2t_read(block); |
| 940 | return status; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 941 | } |
| 942 | |
| 943 | /******************************************************************************* |
| 944 | ** |
| 945 | ** Function rw_t2t_read_ndef_next_block |
| 946 | ** |
| 947 | ** Description This function will read the tag block passed as argument |
| 948 | ** |
| 949 | ** Returns NCI_STATUS_OK, if read was started. Otherwise, error status. |
| 950 | ** |
| 951 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 952 | tNFC_STATUS rw_t2t_read_ndef_next_block(uint16_t block) { |
| 953 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 954 | tNFC_STATUS status; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 955 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 956 | /* Send read command to read base block (Block % 4==0) where this block is |
| 957 | * also read as part of 16 bytes */ |
| 958 | block -= block % T2T_READ_BLOCKS; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 959 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 960 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_READ_NDEF_NEXT_BLOCK; |
| 961 | /* Read the block */ |
| 962 | status = rw_t2t_read(block); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 963 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 964 | return status; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 965 | } |
| 966 | |
| 967 | /******************************************************************************* |
| 968 | ** |
| 969 | ** Function rw_t2t_is_read_before_write_block |
| 970 | ** |
| 971 | ** Description This function will check if the block has to be read before |
| 972 | ** writting to avoid over writting in to lock/reserved bytes |
| 973 | ** present in the block. |
| 974 | ** If no bytes in the block can be overwritten it moves in to |
| 975 | ** next block and check. Finally it finds a block where part of |
| 976 | ** ndef bytes can exist and check if the whole block can be |
| 977 | ** updated or only part of block can be modified. |
| 978 | ** |
| 979 | ** Returns TRUE, if the block returned should be read before writting |
| 980 | ** FALSE, if the block need not be read as it was already |
| 981 | ** read or during NDEF write we may completely overwrite |
| 982 | ** the block and there is no reserved or locked bytes in |
| 983 | ** that block |
| 984 | ** |
| 985 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 986 | static bool rw_t2t_is_read_before_write_block(uint16_t block, |
| 987 | uint16_t* p_block_to_read) { |
| 988 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 989 | uint8_t* p_cc = &p_t2t->tag_hdr[T2T_CC0_NMN_BYTE]; |
| 990 | uint8_t count; |
| 991 | uint8_t index; |
| 992 | uint16_t tag_size = p_cc[2] * 2 + T2T_FIRST_DATA_BLOCK; |
| 993 | bool read_before_write = true; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 994 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 995 | if (block == p_t2t->ndef_header_offset / T2T_BLOCK_SIZE) { |
| 996 | /* First NDEF block is already read */ |
| 997 | read_before_write = false; |
| 998 | memcpy(p_t2t->ndef_read_block, p_t2t->ndef_first_block, T2T_BLOCK_SIZE); |
| 999 | } else if (block == p_t2t->ndef_last_block_num) { |
| 1000 | /* Last NDEF block is already read */ |
| 1001 | read_before_write = false; |
| 1002 | memcpy(p_t2t->ndef_read_block, p_t2t->ndef_last_block, T2T_BLOCK_SIZE); |
| 1003 | } else if (block == p_t2t->terminator_byte_index / T2T_BLOCK_SIZE) { |
| 1004 | /* Terminator tlv block is already read */ |
| 1005 | read_before_write = false; |
| 1006 | memcpy(p_t2t->ndef_read_block, p_t2t->terminator_tlv_block, T2T_BLOCK_SIZE); |
| 1007 | } else { |
| 1008 | count = 0; |
| 1009 | while (block < tag_size) { |
| 1010 | index = 0; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1011 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1012 | while (index < T2T_BLOCK_SIZE) { |
| 1013 | /* check if it is a reserved or locked byte */ |
| 1014 | if (rw_t2t_is_lock_res_byte( |
| 1015 | (uint16_t)((block * T2T_BLOCK_SIZE) + index)) == false) { |
| 1016 | count++; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1017 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1018 | index++; |
| 1019 | } |
| 1020 | if (count == T2T_BLOCK_SIZE) { |
| 1021 | /* All the bytes in the block are free to NDEF write */ |
| 1022 | read_before_write = false; |
| 1023 | break; |
| 1024 | } else if (count == 0) { |
| 1025 | /* The complete block is not free for NDEF write */ |
| 1026 | index = 0; |
| 1027 | block++; |
| 1028 | } else { |
| 1029 | /* The block has reseved byte (s) or locked byte (s) or both */ |
| 1030 | read_before_write = true; |
| 1031 | break; |
| 1032 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1033 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1034 | } |
| 1035 | /* Return the block to read next before NDEF write */ |
| 1036 | *p_block_to_read = block; |
| 1037 | return read_before_write; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1038 | } |
| 1039 | |
| 1040 | /******************************************************************************* |
| 1041 | ** |
| 1042 | ** Function rw_t2t_write_ndef_first_block |
| 1043 | ** |
| 1044 | ** Description This function will write the first NDEF block with Length |
| 1045 | ** field reset to zero. |
| 1046 | ** Also after writting NDEF this function may be called to |
| 1047 | ** update new NDEF length |
| 1048 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame] | 1049 | ** Returns NCI_STATUS_OK, if write was started. |
| 1050 | ** Otherwise, error status. |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1051 | ** |
| 1052 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1053 | tNFC_STATUS rw_t2t_write_ndef_first_block(uint16_t msg_len, bool b_update_len) { |
| 1054 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 1055 | uint8_t new_lengthfield_len; |
| 1056 | uint8_t write_block[4]; |
| 1057 | uint8_t block; |
| 1058 | uint8_t* p_cc = &p_t2t->tag_hdr[T2T_CC0_NMN_BYTE]; |
| 1059 | uint16_t total_blocks = p_cc[2] * 2 + T2T_FIRST_DATA_BLOCK; |
| 1060 | tNFC_STATUS status; |
| 1061 | uint8_t length_field[3]; |
| 1062 | uint8_t index; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1063 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1064 | p_t2t->work_offset = 0; |
| 1065 | new_lengthfield_len = p_t2t->new_ndef_msg_len >= T2T_LONG_NDEF_MIN_LEN |
| 1066 | ? T2T_LONG_NDEF_LEN_FIELD_LEN |
| 1067 | : T2T_SHORT_NDEF_LEN_FIELD_LEN; |
| 1068 | if (new_lengthfield_len == 3) { |
| 1069 | /* New NDEF is Long NDEF */ |
| 1070 | if (msg_len == 0) { |
| 1071 | /* Clear NDEF length field */ |
| 1072 | length_field[0] = 0x00; |
| 1073 | length_field[1] = 0x00; |
| 1074 | length_field[2] = 0x00; |
| 1075 | } else { |
| 1076 | /* Update NDEF length field with new NDEF Msg len */ |
| 1077 | length_field[0] = T2T_LONG_NDEF_LEN_FIELD_BYTE0; |
| 1078 | length_field[1] = (uint8_t)(msg_len >> 8); |
| 1079 | length_field[2] = (uint8_t)(msg_len); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1080 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1081 | } else { |
| 1082 | /* New NDEF is Short NDEF */ |
| 1083 | length_field[0] = (uint8_t)(msg_len); |
| 1084 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1085 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1086 | /* updating ndef_first_block with new ndef message */ |
| 1087 | memcpy(write_block, p_t2t->ndef_first_block, T2T_BLOCK_SIZE); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1088 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1089 | index = p_t2t->ndef_header_offset % T2T_BLOCK_SIZE; |
| 1090 | block = (uint8_t)(p_t2t->ndef_header_offset / T2T_BLOCK_SIZE); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1091 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1092 | while (p_t2t->work_offset == 0 && block < total_blocks) { |
| 1093 | /* update length field */ |
| 1094 | while (index < T2T_BLOCK_SIZE && |
| 1095 | p_t2t->work_offset < p_t2t->new_ndef_msg_len) { |
| 1096 | if (rw_t2t_is_lock_res_byte( |
| 1097 | (uint16_t)((block * T2T_BLOCK_SIZE) + index)) == false) { |
| 1098 | write_block[index] = length_field[p_t2t->work_offset]; |
| 1099 | p_t2t->work_offset++; |
| 1100 | } |
| 1101 | index++; |
| 1102 | if (p_t2t->work_offset == new_lengthfield_len) { |
| 1103 | break; |
| 1104 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1105 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1106 | /* If more space in this block then add ndef message */ |
| 1107 | while (index < T2T_BLOCK_SIZE && |
| 1108 | p_t2t->work_offset < |
| 1109 | (p_t2t->new_ndef_msg_len + new_lengthfield_len)) { |
| 1110 | if (rw_t2t_is_lock_res_byte( |
| 1111 | (uint16_t)((block * T2T_BLOCK_SIZE) + index)) == false) { |
| 1112 | write_block[index] = |
| 1113 | p_t2t->p_new_ndef_buffer[p_t2t->work_offset - new_lengthfield_len]; |
| 1114 | p_t2t->work_offset++; |
| 1115 | } |
| 1116 | index++; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1117 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1118 | if (p_t2t->work_offset == 0) { |
| 1119 | /* If no bytes are written move to next block */ |
| 1120 | index = 0; |
| 1121 | block++; |
| 1122 | if (block == p_t2t->ndef_last_block_num) { |
| 1123 | memcpy(write_block, p_t2t->ndef_last_block, T2T_BLOCK_SIZE); |
| 1124 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1125 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1126 | } |
| 1127 | if (p_t2t->work_offset == 0) { |
| 1128 | status = NFC_STATUS_FAILED; |
| 1129 | } else { |
| 1130 | rw_t2t_update_cb(block, write_block, b_update_len); |
| 1131 | /* Update the identified block with newly prepared data */ |
| 1132 | if ((status = rw_t2t_write(block, write_block)) == NFC_STATUS_OK) { |
| 1133 | p_t2t->b_read_data = false; |
| 1134 | } |
| 1135 | } |
| 1136 | return status; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1137 | } |
| 1138 | |
| 1139 | /******************************************************************************* |
| 1140 | ** |
| 1141 | ** Function rw_t2t_write_ndef_next_block |
| 1142 | ** |
| 1143 | ** Description This function can be called to write an NDEF message block |
| 1144 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame] | 1145 | ** Returns NCI_STATUS_OK, if write was started. |
| 1146 | ** Otherwise, error status. |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1147 | ** |
| 1148 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1149 | tNFC_STATUS rw_t2t_write_ndef_next_block(uint16_t block, uint16_t msg_len, |
| 1150 | bool b_update_len) { |
| 1151 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 1152 | uint8_t new_lengthfield_len; |
| 1153 | uint8_t write_block[4]; |
| 1154 | uint8_t* p_cc = &p_t2t->tag_hdr[T2T_CC0_NMN_BYTE]; |
| 1155 | uint16_t total_blocks = p_cc[2] * 2 + T2T_FIRST_DATA_BLOCK; |
| 1156 | uint16_t initial_offset; |
| 1157 | uint8_t length_field[3]; |
| 1158 | uint8_t index; |
| 1159 | tNFC_STATUS status; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1160 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1161 | /* Write NDEF Message */ |
| 1162 | new_lengthfield_len = p_t2t->new_ndef_msg_len >= T2T_LONG_NDEF_MIN_LEN |
| 1163 | ? T2T_LONG_NDEF_LEN_FIELD_LEN |
| 1164 | : T2T_SHORT_NDEF_LEN_FIELD_LEN; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1165 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1166 | index = 0; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1167 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1168 | memcpy(write_block, p_t2t->ndef_read_block, T2T_BLOCK_SIZE); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1169 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1170 | if (p_t2t->work_offset >= new_lengthfield_len) { |
| 1171 | /* Length field is updated, write ndef message field */ |
| 1172 | initial_offset = p_t2t->work_offset; |
| 1173 | while (p_t2t->work_offset == initial_offset && block < total_blocks) { |
| 1174 | while (index < T2T_BLOCK_SIZE && |
| 1175 | p_t2t->work_offset < |
| 1176 | (p_t2t->new_ndef_msg_len + new_lengthfield_len)) { |
| 1177 | if (rw_t2t_is_lock_res_byte( |
| 1178 | (uint16_t)((block * T2T_BLOCK_SIZE) + index)) == false) { |
| 1179 | write_block[index] = |
| 1180 | p_t2t |
| 1181 | ->p_new_ndef_buffer[p_t2t->work_offset - new_lengthfield_len]; |
| 1182 | p_t2t->work_offset++; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1183 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1184 | index++; |
| 1185 | } |
| 1186 | if (p_t2t->work_offset == initial_offset) { |
| 1187 | index = 0; |
| 1188 | block++; |
| 1189 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1190 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1191 | } else { |
| 1192 | /* Complete writting Length field and then write ndef message */ |
| 1193 | new_lengthfield_len = p_t2t->new_ndef_msg_len >= T2T_LONG_NDEF_MIN_LEN |
| 1194 | ? T2T_LONG_NDEF_LEN_FIELD_LEN |
| 1195 | : T2T_SHORT_NDEF_LEN_FIELD_LEN; |
| 1196 | if (new_lengthfield_len == 3) { |
| 1197 | /* New NDEF is Long NDEF */ |
| 1198 | if (msg_len == 0) { |
| 1199 | length_field[0] = 0x00; |
| 1200 | length_field[1] = 0x00; |
| 1201 | length_field[2] = 0x00; |
| 1202 | } else { |
| 1203 | length_field[0] = T2T_LONG_NDEF_LEN_FIELD_BYTE0; |
| 1204 | length_field[1] = (uint8_t)(msg_len >> 8); |
| 1205 | length_field[2] = (uint8_t)(msg_len); |
| 1206 | } |
| 1207 | } else { |
| 1208 | /* New NDEF is short NDEF */ |
| 1209 | length_field[0] = (uint8_t)(msg_len); |
| 1210 | } |
| 1211 | initial_offset = p_t2t->work_offset; |
| 1212 | while (p_t2t->work_offset == initial_offset && block < total_blocks) { |
| 1213 | /* Update length field */ |
| 1214 | while (index < T2T_BLOCK_SIZE && |
| 1215 | p_t2t->work_offset < p_t2t->new_ndef_msg_len) { |
| 1216 | if (rw_t2t_is_lock_res_byte( |
| 1217 | (uint16_t)((block * T2T_BLOCK_SIZE) + index)) == false) { |
| 1218 | write_block[index] = length_field[p_t2t->work_offset]; |
| 1219 | p_t2t->work_offset++; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1220 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1221 | index++; |
| 1222 | if (p_t2t->work_offset == new_lengthfield_len) { |
| 1223 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1224 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1225 | } |
| 1226 | /* Update ndef message field */ |
| 1227 | while (index < T2T_BLOCK_SIZE && |
| 1228 | p_t2t->work_offset < |
| 1229 | (p_t2t->new_ndef_msg_len + new_lengthfield_len)) { |
| 1230 | if (rw_t2t_is_lock_res_byte( |
| 1231 | (uint16_t)((block * T2T_BLOCK_SIZE) + index)) == false) { |
| 1232 | write_block[index] = |
| 1233 | p_t2t |
| 1234 | ->p_new_ndef_buffer[p_t2t->work_offset - new_lengthfield_len]; |
| 1235 | p_t2t->work_offset++; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1236 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1237 | index++; |
| 1238 | } |
| 1239 | if (p_t2t->work_offset == initial_offset) { |
| 1240 | index = 0; |
| 1241 | block++; |
| 1242 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1243 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1244 | } |
| 1245 | if (p_t2t->work_offset == initial_offset) { |
| 1246 | status = NFC_STATUS_FAILED; |
| 1247 | } else { |
| 1248 | rw_t2t_update_cb(block, write_block, b_update_len); |
| 1249 | /* Write the NDEF Block */ |
| 1250 | status = rw_t2t_write(block, write_block); |
| 1251 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1252 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1253 | return status; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1254 | } |
| 1255 | |
| 1256 | /******************************************************************************* |
| 1257 | ** |
| 1258 | ** Function rw_t2t_update_cb |
| 1259 | ** |
| 1260 | ** Description This function can be called to write an NDEF message block |
| 1261 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame] | 1262 | ** Returns NCI_STATUS_OK, if write was started. |
| 1263 | ** Otherwise, error status. |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1264 | ** |
| 1265 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1266 | static void rw_t2t_update_cb(uint16_t block, uint8_t* p_write_block, |
| 1267 | bool b_update_len) { |
| 1268 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 1269 | uint8_t new_lengthfield_len; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1270 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1271 | /* Write NDEF Message */ |
| 1272 | new_lengthfield_len = p_t2t->new_ndef_msg_len >= T2T_LONG_NDEF_MIN_LEN |
| 1273 | ? T2T_LONG_NDEF_LEN_FIELD_LEN |
| 1274 | : T2T_SHORT_NDEF_LEN_FIELD_LEN; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1275 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1276 | if (block == p_t2t->ndef_header_offset / T2T_BLOCK_SIZE) { |
| 1277 | /* Update ndef first block if the 'block' points to ndef first block */ |
| 1278 | memcpy(p_t2t->ndef_first_block, p_write_block, T2T_BLOCK_SIZE); |
| 1279 | } |
| 1280 | if (p_t2t->terminator_byte_index / T2T_BLOCK_SIZE == block) { |
| 1281 | /* Update terminator block if the 'block' points to terminator tlv block */ |
| 1282 | memcpy(p_t2t->terminator_tlv_block, p_write_block, T2T_BLOCK_LEN); |
| 1283 | } |
| 1284 | if (b_update_len == false) { |
| 1285 | if (block == p_t2t->ndef_last_block_num) { |
| 1286 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_WRITE_NDEF_LAST_BLOCK; |
| 1287 | p_t2t->work_offset = 0; |
| 1288 | /* Update ndef final block if the 'block' points to ndef final block */ |
| 1289 | memcpy(p_t2t->ndef_last_block, p_write_block, T2T_BLOCK_SIZE); |
| 1290 | } else { |
| 1291 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_WRITE_NDEF_NEXT_BLOCK; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1292 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1293 | } else { |
| 1294 | if (block == p_t2t->ndef_last_block_num) { |
| 1295 | /* Update the backup of Ndef final block TLV block */ |
| 1296 | memcpy(p_t2t->ndef_last_block, p_write_block, T2T_BLOCK_SIZE); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1297 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1298 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1299 | if (p_t2t->work_offset >= new_lengthfield_len) { |
| 1300 | if (p_t2t->terminator_byte_index != 0) { |
| 1301 | /* Add Terminator TLV as part of NDEF Write operation */ |
| 1302 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_WRITE_NDEF_LEN_BLOCK; |
| 1303 | } else { |
| 1304 | /* Skip adding Terminator TLV */ |
| 1305 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_WRITE_TERM_TLV_CMPLT; |
| 1306 | } |
| 1307 | } else { |
| 1308 | /* Part of NDEF Message Len should be added in the next block */ |
| 1309 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_WRITE_NDEF_LEN_NEXT_BLOCK; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1310 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1311 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1312 | } |
| 1313 | |
| 1314 | /******************************************************************************* |
| 1315 | ** |
| 1316 | ** Function rw_t2t_get_ndef_flags |
| 1317 | ** |
| 1318 | ** Description Prepare NDEF Flags |
| 1319 | ** |
| 1320 | ** Returns NDEF Flag value |
| 1321 | ** |
| 1322 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1323 | static uint8_t rw_t2t_get_ndef_flags(void) { |
| 1324 | uint8_t flags = 0; |
| 1325 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 1326 | const tT2T_INIT_TAG* p_ret; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1327 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1328 | flags |= RW_NDEF_FL_SUPPORTED; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1329 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1330 | if ((p_t2t->tag_hdr[T2T_CC2_TMS_BYTE] == T2T_CC2_TMS_STATIC) || |
| 1331 | (p_t2t->tag_hdr[T2T_CC2_TMS_BYTE] == 0)) |
| 1332 | flags |= RW_NDEF_FL_FORMATABLE; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1333 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1334 | if ((p_t2t->tag_hdr[T2T_CC3_RWA_BYTE] & T2T_CC3_RWA_RO) == T2T_CC3_RWA_RO) |
| 1335 | flags |= RW_NDEF_FL_READ_ONLY; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1336 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1337 | if (((p_ret = t2t_tag_init_data(p_t2t->tag_hdr[0], false, 0)) != NULL) && |
| 1338 | (p_ret->b_otp)) { |
| 1339 | /* Set otp flag */ |
| 1340 | flags |= RW_NDEF_FL_OTP; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1341 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1342 | /* Set Read only flag if otp tag already has NDEF Message */ |
| 1343 | if (p_t2t->ndef_msg_len) flags |= RW_NDEF_FL_READ_ONLY; |
| 1344 | } |
| 1345 | return flags; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1346 | } |
| 1347 | |
| 1348 | /******************************************************************************* |
| 1349 | ** |
| 1350 | ** Function rw_t2t_get_ndef_max_size |
| 1351 | ** |
| 1352 | ** Description Calculate maximum size of NDEF message that can be written |
| 1353 | ** on to the tag |
| 1354 | ** |
| 1355 | ** Returns Maximum size of NDEF Message |
| 1356 | ** |
| 1357 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1358 | static uint16_t rw_t2t_get_ndef_max_size(void) { |
| 1359 | uint16_t offset; |
| 1360 | uint8_t xx; |
| 1361 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 1362 | uint16_t tag_size = (p_t2t->tag_hdr[T2T_CC2_TMS_BYTE] * T2T_TMS_TAG_FACTOR) + |
| 1363 | (T2T_FIRST_DATA_BLOCK * T2T_BLOCK_LEN) + |
| 1364 | p_t2t->num_lockbytes; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1365 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1366 | for (xx = 0; xx < p_t2t->num_mem_tlvs; xx++) |
| 1367 | tag_size += p_t2t->mem_tlv[xx].num_bytes; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1368 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1369 | offset = p_t2t->ndef_msg_offset; |
| 1370 | p_t2t->max_ndef_msg_len = 0; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1371 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1372 | if ((tag_size < T2T_STATIC_SIZE) || |
| 1373 | (tag_size > (T2T_SECTOR_SIZE * T2T_MAX_SECTOR)) || |
| 1374 | ((p_t2t->tag_hdr[T2T_CC0_NMN_BYTE] != T2T_CC0_NMN) && |
| 1375 | (p_t2t->tag_hdr[T2T_CC0_NMN_BYTE] != 0))) { |
| 1376 | /* Tag not formated, assume static tag */ |
| 1377 | p_t2t->max_ndef_msg_len = T2T_STATIC_SIZE - T2T_HEADER_SIZE - |
| 1378 | T2T_TLV_TYPE_LEN - T2T_SHORT_NDEF_LEN_FIELD_LEN; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1379 | return p_t2t->max_ndef_msg_len; |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1380 | } |
| 1381 | |
| 1382 | /* Starting from NDEF Message offset find the first locked data byte */ |
| 1383 | while (offset < tag_size) { |
| 1384 | if (rw_t2t_is_lock_res_byte((uint16_t)offset) == false) { |
| 1385 | if (rw_t2t_is_read_only_byte((uint16_t)offset) == true) break; |
| 1386 | p_t2t->max_ndef_msg_len++; |
| 1387 | } |
| 1388 | offset++; |
| 1389 | } |
| 1390 | /* NDEF Length field length changes based on NDEF size */ |
| 1391 | if ((p_t2t->max_ndef_msg_len >= T2T_LONG_NDEF_LEN_FIELD_BYTE0) && |
| 1392 | ((p_t2t->ndef_msg_offset - p_t2t->ndef_header_offset) == |
| 1393 | T2T_SHORT_NDEF_LEN_FIELD_LEN)) { |
| 1394 | p_t2t->max_ndef_msg_len -= |
| 1395 | (p_t2t->max_ndef_msg_len == T2T_LONG_NDEF_LEN_FIELD_BYTE0) |
| 1396 | ? 1 |
| 1397 | : (T2T_LONG_NDEF_LEN_FIELD_LEN - T2T_SHORT_NDEF_LEN_FIELD_LEN); |
| 1398 | } |
| 1399 | return p_t2t->max_ndef_msg_len; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1400 | } |
| 1401 | |
| 1402 | /******************************************************************************* |
| 1403 | ** |
| 1404 | ** Function rw_t2t_add_terminator_tlv |
| 1405 | ** |
| 1406 | ** Description This function will add terminator TLV after NDEF Message |
| 1407 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame] | 1408 | ** Returns NCI_STATUS_OK, if write was started. |
| 1409 | ** Otherwise, error status. |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1410 | ** |
| 1411 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1412 | tNFC_STATUS rw_t2t_add_terminator_tlv(void) { |
| 1413 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 1414 | tNFC_STATUS status; |
| 1415 | uint16_t block; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1416 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1417 | /* Add Terminator TLV after NDEF Message */ |
| 1418 | p_t2t->terminator_tlv_block[p_t2t->terminator_byte_index % T2T_BLOCK_LEN] = |
| 1419 | TAG_TERMINATOR_TLV; |
| 1420 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_WRITE_TERM_TLV_CMPLT; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1421 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1422 | block = p_t2t->terminator_byte_index / T2T_BLOCK_LEN; |
| 1423 | status = rw_t2t_write(block, p_t2t->terminator_tlv_block); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1424 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1425 | return status; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1426 | } |
| 1427 | |
| 1428 | /******************************************************************************* |
| 1429 | ** |
| 1430 | ** Function rw_t2t_handle_ndef_read_rsp |
| 1431 | ** |
| 1432 | ** Description This function handles reading an NDEF message. |
| 1433 | ** |
| 1434 | ** Returns none |
| 1435 | ** |
| 1436 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1437 | static void rw_t2t_handle_ndef_read_rsp(uint8_t* p_data) { |
| 1438 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 1439 | tRW_READ_DATA evt_data; |
| 1440 | uint16_t len; |
| 1441 | uint16_t offset; |
| 1442 | bool failed = false; |
| 1443 | bool done = false; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1444 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1445 | /* On the first read, adjust for any partial block offset */ |
| 1446 | offset = 0; |
| 1447 | len = T2T_READ_DATA_LEN; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1448 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1449 | if (p_t2t->work_offset == 0) { |
| 1450 | /* The Ndef Message offset may be present in the read 16 bytes */ |
| 1451 | offset = (p_t2t->ndef_msg_offset - (p_t2t->block_read * T2T_BLOCK_SIZE)); |
| 1452 | } |
| 1453 | |
| 1454 | /* Skip all reserved and lock bytes */ |
| 1455 | while ((offset < len) && (p_t2t->work_offset < p_t2t->ndef_msg_len)) |
| 1456 | |
| 1457 | { |
| 1458 | if (rw_t2t_is_lock_res_byte( |
| 1459 | (uint16_t)(offset + p_t2t->block_read * T2T_BLOCK_LEN)) == false) { |
| 1460 | /* Collect the NDEF Message */ |
| 1461 | p_t2t->p_ndef_buffer[p_t2t->work_offset] = p_data[offset]; |
| 1462 | p_t2t->work_offset++; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1463 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1464 | offset++; |
| 1465 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1466 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1467 | if (p_t2t->work_offset >= p_t2t->ndef_msg_len) { |
| 1468 | done = true; |
| 1469 | p_t2t->ndef_status = T2T_NDEF_READ; |
| 1470 | } else { |
| 1471 | /* Read next 4 blocks */ |
| 1472 | if (rw_t2t_read((uint16_t)(p_t2t->block_read + T2T_READ_BLOCKS)) != |
| 1473 | NFC_STATUS_OK) |
| 1474 | failed = true; |
| 1475 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1476 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1477 | if (failed || done) { |
| 1478 | evt_data.status = failed ? NFC_STATUS_FAILED : NFC_STATUS_OK; |
| 1479 | evt_data.p_data = NULL; |
| 1480 | rw_t2t_handle_op_complete(); |
| 1481 | (*rw_cb.p_cback)(RW_T2T_NDEF_READ_EVT, (tRW_DATA*)&evt_data); |
| 1482 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1483 | } |
| 1484 | |
| 1485 | /******************************************************************************* |
| 1486 | ** |
| 1487 | ** Function rw_t2t_handle_ndef_write_rsp |
| 1488 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame] | 1489 | ** Description Handle response received to reading (or part of) NDEF |
| 1490 | ** message. |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1491 | ** |
| 1492 | ** Returns none |
| 1493 | ** |
| 1494 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1495 | static void rw_t2t_handle_ndef_write_rsp(uint8_t* p_data) { |
| 1496 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 1497 | tRW_READ_DATA evt_data; |
| 1498 | bool failed = false; |
| 1499 | bool done = false; |
| 1500 | uint16_t block; |
| 1501 | uint8_t offset; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1502 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1503 | switch (p_t2t->substate) { |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1504 | case RW_T2T_SUBSTATE_WAIT_READ_NDEF_FIRST_BLOCK: |
| 1505 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1506 | /* Backup the read NDEF first block */ |
| 1507 | memcpy(p_t2t->ndef_first_block, p_data, T2T_BLOCK_LEN); |
| 1508 | /* Read ndef final block */ |
| 1509 | if (rw_t2t_read_ndef_last_block() != NFC_STATUS_OK) failed = true; |
| 1510 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1511 | |
| 1512 | case RW_T2T_SUBSTATE_WAIT_READ_NDEF_LAST_BLOCK: |
| 1513 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1514 | offset = (uint8_t)(p_t2t->ndef_last_block_num - p_t2t->block_read) * |
| 1515 | T2T_BLOCK_SIZE; |
| 1516 | /* Backup the read NDEF final block */ |
| 1517 | memcpy(p_t2t->ndef_last_block, &p_data[offset], T2T_BLOCK_LEN); |
| 1518 | if ((p_t2t->terminator_byte_index / T2T_BLOCK_SIZE) == |
| 1519 | p_t2t->ndef_last_block_num) { |
| 1520 | /* If Terminator TLV will reside on the NDEF Final block */ |
| 1521 | memcpy(p_t2t->terminator_tlv_block, p_t2t->ndef_last_block, |
| 1522 | T2T_BLOCK_LEN); |
| 1523 | if (rw_t2t_write_ndef_first_block(0x0000, false) != NFC_STATUS_OK) |
| 1524 | failed = true; |
| 1525 | } else if (p_t2t->terminator_byte_index != 0) { |
| 1526 | /* If there is space for Terminator TLV and if it will reside outside |
| 1527 | * NDEF Final block */ |
| 1528 | if (rw_t2t_read_terminator_tlv_block() != NFC_STATUS_OK) failed = true; |
| 1529 | } else { |
| 1530 | if (rw_t2t_write_ndef_first_block(0x0000, false) != NFC_STATUS_OK) |
| 1531 | failed = true; |
| 1532 | } |
| 1533 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1534 | |
| 1535 | case RW_T2T_SUBSTATE_WAIT_READ_TERM_TLV_BLOCK: |
| 1536 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1537 | offset = (uint8_t)(((p_t2t->terminator_byte_index / T2T_BLOCK_SIZE) - |
| 1538 | p_t2t->block_read) * |
| 1539 | T2T_BLOCK_SIZE); |
| 1540 | /* Backup the read Terminator TLV block */ |
| 1541 | memcpy(p_t2t->terminator_tlv_block, &p_data[offset], T2T_BLOCK_LEN); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1542 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1543 | /* Write the first block for new NDEF Message */ |
| 1544 | if (rw_t2t_write_ndef_first_block(0x0000, false) != NFC_STATUS_OK) |
| 1545 | failed = true; |
| 1546 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1547 | |
| 1548 | case RW_T2T_SUBSTATE_WAIT_READ_NDEF_NEXT_BLOCK: |
| 1549 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1550 | offset = (uint8_t)(p_t2t->ndef_read_block_num - p_t2t->block_read) * |
| 1551 | T2T_BLOCK_SIZE; |
| 1552 | /* Backup read block */ |
| 1553 | memcpy(p_t2t->ndef_read_block, &p_data[offset], T2T_BLOCK_LEN); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1554 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1555 | /* Update the block with new NDEF Message */ |
| 1556 | if (rw_t2t_write_ndef_next_block(p_t2t->ndef_read_block_num, 0x0000, |
| 1557 | false) != NFC_STATUS_OK) |
| 1558 | failed = true; |
| 1559 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1560 | |
| 1561 | case RW_T2T_SUBSTATE_WAIT_WRITE_NDEF_NEXT_BLOCK: |
| 1562 | case RW_T2T_SUBSTATE_WAIT_WRITE_NDEF_LEN_NEXT_BLOCK: |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1563 | if (rw_t2t_is_read_before_write_block( |
| 1564 | (uint16_t)(p_t2t->block_written + 1), &block) == true) { |
| 1565 | p_t2t->ndef_read_block_num = block; |
| 1566 | /* If only part of the block is going to be updated read the block to |
| 1567 | retain previous data for |
| 1568 | unchanged part of the block */ |
| 1569 | if (rw_t2t_read_ndef_next_block(block) != NFC_STATUS_OK) failed = true; |
| 1570 | } else { |
| 1571 | if (p_t2t->substate == RW_T2T_SUBSTATE_WAIT_WRITE_NDEF_LEN_NEXT_BLOCK) { |
| 1572 | /* Directly write the block with new NDEF contents as whole block is |
| 1573 | * going to be updated */ |
| 1574 | if (rw_t2t_write_ndef_next_block(block, p_t2t->new_ndef_msg_len, |
| 1575 | true) != NFC_STATUS_OK) |
| 1576 | failed = true; |
| 1577 | } else { |
| 1578 | /* Directly write the block with new NDEF contents as whole block is |
| 1579 | * going to be updated */ |
| 1580 | if (rw_t2t_write_ndef_next_block(block, 0x0000, false) != |
| 1581 | NFC_STATUS_OK) |
| 1582 | failed = true; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1583 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1584 | } |
| 1585 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1586 | |
| 1587 | case RW_T2T_SUBSTATE_WAIT_WRITE_NDEF_LAST_BLOCK: |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1588 | /* Write the next block for new NDEF Message */ |
| 1589 | p_t2t->ndef_write_block = p_t2t->ndef_header_offset / T2T_BLOCK_SIZE; |
| 1590 | if (rw_t2t_is_read_before_write_block((uint16_t)(p_t2t->ndef_write_block), |
| 1591 | &block) == true) { |
| 1592 | /* If only part of the block is going to be updated read the block to |
| 1593 | retain previous data for |
| 1594 | part of the block thats not going to be changed */ |
| 1595 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_READ_NDEF_LEN_BLOCK; |
| 1596 | if (rw_t2t_read(block) != NFC_STATUS_OK) failed = true; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1597 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1598 | } else { |
| 1599 | /* Update NDEF Message Length in the Tag */ |
| 1600 | if (rw_t2t_write_ndef_first_block(p_t2t->new_ndef_msg_len, true) != |
| 1601 | NFC_STATUS_OK) |
| 1602 | failed = true; |
| 1603 | } |
| 1604 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1605 | |
| 1606 | case RW_T2T_SUBSTATE_WAIT_READ_NDEF_LEN_BLOCK: |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1607 | /* Backup read block */ |
| 1608 | memcpy(p_t2t->ndef_read_block, p_data, T2T_BLOCK_LEN); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1609 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1610 | /* Update the block with new NDEF Message */ |
| 1611 | if (rw_t2t_write_ndef_next_block(p_t2t->block_read, |
| 1612 | p_t2t->new_ndef_msg_len, |
| 1613 | true) == NFC_STATUS_OK) |
| 1614 | p_t2t->ndef_write_block = p_t2t->block_read + 1; |
| 1615 | else |
| 1616 | failed = true; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1617 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1618 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1619 | |
| 1620 | case RW_T2T_SUBSTATE_WAIT_WRITE_NDEF_LEN_BLOCK: |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1621 | if (rw_t2t_add_terminator_tlv() != NFC_STATUS_OK) failed = true; |
| 1622 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1623 | |
| 1624 | case RW_T2T_SUBSTATE_WAIT_WRITE_TERM_TLV_CMPLT: |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1625 | done = true; |
| 1626 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1627 | |
| 1628 | default: |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1629 | break; |
| 1630 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1631 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1632 | if (failed || done) { |
| 1633 | evt_data.p_data = NULL; |
| 1634 | /* NDEF WRITE Operation is done, inform up the stack */ |
| 1635 | evt_data.status = failed ? NFC_STATUS_FAILED : NFC_STATUS_OK; |
| 1636 | if (done) { |
| 1637 | if ((p_t2t->ndef_msg_len >= 0x00FF) && |
| 1638 | (p_t2t->new_ndef_msg_len < 0x00FF)) { |
| 1639 | p_t2t->ndef_msg_offset -= 2; |
| 1640 | } else if ((p_t2t->new_ndef_msg_len >= 0x00FF) && |
| 1641 | (p_t2t->ndef_msg_len < 0x00FF)) { |
| 1642 | p_t2t->ndef_msg_offset += 2; |
| 1643 | } |
| 1644 | p_t2t->ndef_msg_len = p_t2t->new_ndef_msg_len; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1645 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1646 | rw_t2t_handle_op_complete(); |
| 1647 | (*rw_cb.p_cback)(RW_T2T_NDEF_WRITE_EVT, (tRW_DATA*)&evt_data); |
| 1648 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1649 | } |
| 1650 | |
| 1651 | /******************************************************************************* |
| 1652 | ** |
| 1653 | ** Function rw_t2t_get_tag_size |
| 1654 | ** |
| 1655 | ** Description This function calculates tag data area size from data read |
| 1656 | ** from block with version number |
| 1657 | ** |
| 1658 | ** Returns TMS of the tag |
| 1659 | ** |
| 1660 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1661 | static uint8_t rw_t2t_get_tag_size(uint8_t* p_data) { |
| 1662 | uint16_t LchunkSize = 0; |
| 1663 | uint16_t Num_LChuncks = 0; |
| 1664 | uint16_t tms = 0; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1665 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1666 | LchunkSize = (uint16_t)p_data[2] << 8 | p_data[3]; |
| 1667 | Num_LChuncks = (uint16_t)p_data[4] << 8 | p_data[5]; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1668 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1669 | tms = (uint16_t)(LchunkSize * Num_LChuncks); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1670 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1671 | tms += (T2T_STATIC_SIZE - T2T_HEADER_SIZE); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1672 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1673 | tms /= 0x08; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1674 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1675 | return (uint8_t)tms; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1676 | } |
| 1677 | |
| 1678 | /******************************************************************************* |
| 1679 | ** |
| 1680 | ** Function rw_t2t_handle_config_tag_readonly |
| 1681 | ** |
| 1682 | ** Description This function handles configure type 2 tag as read only |
| 1683 | ** |
| 1684 | ** Returns none |
| 1685 | ** |
| 1686 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1687 | static void rw_t2t_handle_config_tag_readonly(uint8_t* p_data) { |
| 1688 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 1689 | tNFC_STATUS status = NFC_STATUS_FAILED; |
| 1690 | bool b_notify = false; |
| 1691 | uint8_t write_block[T2T_BLOCK_SIZE]; |
| 1692 | tRW_DATA evt; |
| 1693 | bool b_pending = false; |
| 1694 | uint8_t read_lock = 0; |
| 1695 | uint8_t num_locks = 0; |
| 1696 | uint16_t offset; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1697 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1698 | switch (p_t2t->substate) { |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1699 | case RW_T2T_SUBSTATE_WAIT_READ_CC: |
| 1700 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1701 | /* First soft lock the tag */ |
| 1702 | rw_t2t_soft_lock_tag(); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1703 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1704 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1705 | |
| 1706 | case RW_T2T_SUBSTATE_WAIT_SET_CC_RO: |
| 1707 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1708 | /* Successfully soft locked! Update Tag header for future reference */ |
| 1709 | p_t2t->tag_hdr[T2T_CC3_RWA_BYTE] = T2T_CC3_RWA_RO; |
| 1710 | if (!p_t2t->b_hard_lock) { |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1711 | /* Tag configuration complete */ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1712 | status = NFC_STATUS_OK; |
Ruchi Kandoi | 4a17964 | 2017-01-04 10:04:48 -0800 | [diff] [blame] | 1713 | b_notify = true; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1714 | break; |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1715 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1716 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1717 | /* Coverity: [FALSE-POSITIVE error] intended fall through */ |
| 1718 | /* Missing break statement between cases in switch statement */ |
| 1719 | /* fall through */ |
| 1720 | case RW_T2T_SUBSTATE_WAIT_SET_DYN_LOCK_BITS: |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1721 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1722 | num_locks = 0; |
| 1723 | |
| 1724 | while (num_locks < p_t2t->num_lockbytes) { |
| 1725 | if (p_t2t->lockbyte[num_locks].lock_status == |
| 1726 | RW_T2T_LOCK_UPDATE_INITIATED) { |
| 1727 | /* Update control block as one or more dynamic lock byte (s) are set |
| 1728 | */ |
| 1729 | p_t2t->lockbyte[num_locks].lock_status = RW_T2T_LOCK_UPDATED; |
| 1730 | } |
| 1731 | if (!b_pending && |
| 1732 | p_t2t->lockbyte[num_locks].lock_status == RW_T2T_LOCK_NOT_UPDATED) { |
| 1733 | /* One or more dynamic lock bits are not set */ |
| 1734 | b_pending = true; |
| 1735 | read_lock = num_locks; |
| 1736 | } |
| 1737 | num_locks++; |
| 1738 | } |
| 1739 | |
| 1740 | if (b_pending) { |
| 1741 | /* Read the block where dynamic lock bits are present to avoid writing |
| 1742 | * to NDEF bytes in the same block */ |
| 1743 | offset = p_t2t->lock_tlv[p_t2t->lockbyte[read_lock].tlv_index].offset + |
| 1744 | p_t2t->lockbyte[read_lock].byte_index; |
| 1745 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_READ_DYN_LOCK_BYTE_BLOCK; |
| 1746 | status = rw_t2t_read((uint16_t)(offset / T2T_BLOCK_LEN)); |
| 1747 | } else { |
| 1748 | /* Now set Static lock bits as no more dynamic lock bits to set */ |
| 1749 | |
| 1750 | /* Copy the internal bytes */ |
| 1751 | memcpy(write_block, |
| 1752 | &p_t2t->tag_hdr[T2T_STATIC_LOCK0 - T2T_INTERNAL_BYTES_LEN], |
| 1753 | T2T_INTERNAL_BYTES_LEN); |
| 1754 | /* Set all Static lock bits */ |
| 1755 | write_block[T2T_STATIC_LOCK0 % T2T_BLOCK_SIZE] = 0xFF; |
| 1756 | write_block[T2T_STATIC_LOCK1 % T2T_BLOCK_SIZE] = 0xFF; |
| 1757 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_SET_ST_LOCK_BITS; |
| 1758 | status = rw_t2t_write((T2T_STATIC_LOCK0 / T2T_BLOCK_SIZE), write_block); |
| 1759 | } |
| 1760 | break; |
| 1761 | |
| 1762 | case RW_T2T_SUBSTATE_WAIT_READ_DYN_LOCK_BYTE_BLOCK: |
| 1763 | /* Now set the dynamic lock bits present in the block read now */ |
| 1764 | status = rw_t2t_set_dynamic_lock_bits(p_data); |
| 1765 | break; |
| 1766 | |
| 1767 | case RW_T2T_SUBSTATE_WAIT_SET_ST_LOCK_BITS: |
| 1768 | /* Tag configuration complete */ |
| 1769 | status = NFC_STATUS_OK; |
| 1770 | b_notify = true; |
| 1771 | break; |
| 1772 | } |
| 1773 | |
| 1774 | if (status != NFC_STATUS_OK || b_notify) { |
| 1775 | /* Notify upper layer the result of Configuring Tag as Read only */ |
| 1776 | evt.status = status; |
| 1777 | rw_t2t_handle_op_complete(); |
| 1778 | (*rw_cb.p_cback)(RW_T2T_SET_TAG_RO_EVT, (tRW_DATA*)&evt); |
| 1779 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1780 | } |
| 1781 | |
| 1782 | /******************************************************************************* |
| 1783 | ** |
| 1784 | ** Function rw_t2t_handle_format_tag_rsp |
| 1785 | ** |
| 1786 | ** Description This function handles formating a type 2 tag |
| 1787 | ** |
| 1788 | ** Returns none |
| 1789 | ** |
| 1790 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1791 | static void rw_t2t_handle_format_tag_rsp(uint8_t* p_data) { |
| 1792 | tRW_DATA evt; |
| 1793 | uint8_t* p; |
| 1794 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 1795 | tNFC_STATUS status = NFC_STATUS_FAILED; |
| 1796 | uint16_t version_no; |
| 1797 | const tT2T_INIT_TAG* p_ret; |
| 1798 | uint8_t tms; |
| 1799 | uint8_t next_block = T2T_FIRST_DATA_BLOCK + 1; |
| 1800 | uint16_t addr, locked_area; |
| 1801 | bool b_notify = false; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1802 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1803 | p = p_t2t->ndef_final_block; |
| 1804 | UINT8_TO_BE_STREAM(p, p_t2t->tlv_value[2]); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1805 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1806 | switch (p_t2t->substate) { |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1807 | case RW_T2T_SUBSTATE_WAIT_READ_CC: |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1808 | /* Start format operation */ |
| 1809 | status = rw_t2t_format_tag(); |
| 1810 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1811 | |
| 1812 | case RW_T2T_SUBSTATE_WAIT_READ_VERSION_INFO: |
| 1813 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1814 | memcpy(p_t2t->tag_data, p_data, T2T_READ_DATA_LEN); |
| 1815 | p_t2t->b_read_data = true; |
| 1816 | version_no = (uint16_t)p_data[0] << 8 | p_data[1]; |
| 1817 | if ((p_ret = t2t_tag_init_data(p_t2t->tag_hdr[0], true, version_no)) != |
| 1818 | NULL) { |
| 1819 | /* Valid Version Number */ |
| 1820 | if (p_ret->b_calc_cc) /* Calculate tag size from Version Information */ |
| 1821 | tms = rw_t2t_get_tag_size(p_data); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1822 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1823 | else |
| 1824 | /* Tag size from Look up table */ |
| 1825 | tms = p_ret->tms; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1826 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1827 | /* Set CC with the Tag size from look up table or from calculated value |
| 1828 | */ |
| 1829 | status = rw_t2t_set_cc(tms); |
| 1830 | } |
| 1831 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1832 | |
| 1833 | case RW_T2T_SUBSTATE_WAIT_SET_CC: |
| 1834 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1835 | version_no = (uint16_t)p_t2t->tag_data[0] << 8 | p_t2t->tag_data[1]; |
| 1836 | if ((version_no == 0) || |
| 1837 | ((p_ret = t2t_tag_init_data(p_t2t->tag_hdr[0], true, version_no)) == |
| 1838 | NULL) || |
| 1839 | (!p_ret->b_multi_version) || (!p_ret->b_calc_cc)) { |
| 1840 | /* Currently Formating a non blank tag or a blank tag with manufacturer |
| 1841 | * has only one variant of tag. Set Null NDEF TLV and complete Format |
| 1842 | * Operation */ |
| 1843 | next_block = T2T_FIRST_DATA_BLOCK; |
| 1844 | p = p_t2t->ndef_final_block; |
| 1845 | } else { |
| 1846 | addr = (uint16_t)( |
| 1847 | ((uint16_t)p_t2t->tag_data[2] << 8 | p_t2t->tag_data[3]) * |
| 1848 | ((uint16_t)p_t2t->tag_data[4] << 8 | p_t2t->tag_data[5]) + |
| 1849 | T2T_STATIC_SIZE); |
| 1850 | locked_area = ((uint16_t)p_t2t->tag_data[2] << 8 | p_t2t->tag_data[3]) * |
| 1851 | ((uint16_t)p_t2t->tag_data[6]); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1852 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1853 | if ((status = |
| 1854 | rw_t2t_set_lock_tlv(addr, p_t2t->tag_data[7], locked_area)) == |
| 1855 | NFC_STATUS_REJECTED) { |
| 1856 | /* Cannot calculate Lock TLV. Set Null NDEF TLV and complete Format |
| 1857 | * Operation */ |
| 1858 | next_block = T2T_FIRST_DATA_BLOCK; |
| 1859 | p = p_t2t->ndef_final_block; |
| 1860 | } else |
| 1861 | break; |
| 1862 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1863 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1864 | /* falls through */ |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1865 | case RW_T2T_SUBSTATE_WAIT_SET_LOCK_TLV: |
| 1866 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1867 | /* Prepare NULL NDEF TLV, TERMINATOR_TLV */ |
| 1868 | UINT8_TO_BE_STREAM(p, TAG_NDEF_TLV); |
| 1869 | UINT8_TO_BE_STREAM(p, 0); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1870 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1871 | if (((p_ret = t2t_tag_init_data(p_t2t->tag_hdr[0], false, 0)) != NULL) && |
| 1872 | (!p_ret->b_otp)) { |
| 1873 | UINT8_TO_BE_STREAM(p, TAG_TERMINATOR_TLV); |
| 1874 | } else |
| 1875 | UINT8_TO_BE_STREAM(p, 0); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1876 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1877 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_SET_NULL_NDEF; |
| 1878 | /* send WRITE-E8 command */ |
| 1879 | if ((status = rw_t2t_write(next_block, p_t2t->ndef_final_block)) == |
| 1880 | NFC_STATUS_OK) |
| 1881 | p_t2t->b_read_data = false; |
| 1882 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1883 | |
| 1884 | case RW_T2T_SUBSTATE_WAIT_SET_NULL_NDEF: |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1885 | /* Tag Formated successfully */ |
| 1886 | status = NFC_STATUS_OK; |
| 1887 | b_notify = true; |
| 1888 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1889 | |
| 1890 | default: |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1891 | break; |
| 1892 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1893 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1894 | if (status != NFC_STATUS_OK || b_notify) { |
| 1895 | /* Notify upper layer the result of Format op */ |
| 1896 | evt.status = status; |
| 1897 | rw_t2t_handle_op_complete(); |
| 1898 | (*rw_cb.p_cback)(RW_T2T_FORMAT_CPLT_EVT, (tRW_DATA*)&evt); |
| 1899 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1900 | } |
| 1901 | |
| 1902 | /******************************************************************************* |
| 1903 | ** |
| 1904 | ** Function rw_t2t_update_attributes |
| 1905 | ** |
| 1906 | ** Description This function will update attribute for the current segment |
| 1907 | ** based on lock and reserved bytes |
| 1908 | ** |
| 1909 | ** Returns None |
| 1910 | ** |
| 1911 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1912 | static void rw_t2t_update_attributes(void) { |
| 1913 | uint8_t count = 0; |
| 1914 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 1915 | uint16_t lower_offset; |
| 1916 | uint16_t upper_offset; |
| 1917 | uint16_t offset; |
| 1918 | uint8_t num_bytes; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1919 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1920 | /* Prepare attr for the current segment */ |
| 1921 | memset(p_t2t->attr, 0, RW_T2T_SEGMENT_SIZE * sizeof(uint8_t)); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1922 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1923 | /* calculate offset where the current segment starts in the tag */ |
| 1924 | lower_offset = p_t2t->segment * RW_T2T_SEGMENT_BYTES; |
| 1925 | /* calculate offset where the current segment ends in the tag */ |
| 1926 | upper_offset = (p_t2t->segment + 1) * RW_T2T_SEGMENT_BYTES; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1927 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1928 | /* check offset of lock bytes in the tag and update p_t2t->attr |
| 1929 | * for every lock byte that is present in the current segment */ |
| 1930 | count = 0; |
| 1931 | while (count < p_t2t->num_lockbytes) { |
| 1932 | offset = p_t2t->lock_tlv[p_t2t->lockbyte[count].tlv_index].offset + |
| 1933 | p_t2t->lockbyte[count].byte_index; |
| 1934 | if (offset >= lower_offset && offset < upper_offset) { |
| 1935 | /* Calculate offset in the current segment as p_t2t->attr is prepared for |
| 1936 | * one segment only */ |
| 1937 | offset %= RW_T2T_SEGMENT_BYTES; |
| 1938 | /* Every bit in p_t2t->attr indicates one byte of the tag is either a |
| 1939 | * lock/reserved byte or not |
| 1940 | * So, each array element in p_t2t->attr covers two blocks in the tag as |
| 1941 | * T2 block size is 4 and array element size is 8 |
| 1942 | * Set the corresponding bit in attr to indicate - reserved byte */ |
| 1943 | p_t2t->attr[offset / TAG_BITS_PER_BYTE] |= |
| 1944 | rw_t2t_mask_bits[offset % TAG_BITS_PER_BYTE]; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1945 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1946 | count++; |
| 1947 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1948 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1949 | /* Search reserved bytes identified by all memory tlvs present in the tag */ |
| 1950 | count = 0; |
| 1951 | while (count < p_t2t->num_mem_tlvs) { |
| 1952 | /* check the offset of reserved bytes in the tag and update p_t2t->attr |
| 1953 | * for every reserved byte that is present in the current segment */ |
| 1954 | num_bytes = 0; |
| 1955 | while (num_bytes < p_t2t->mem_tlv[count].num_bytes) { |
| 1956 | offset = p_t2t->mem_tlv[count].offset + num_bytes; |
| 1957 | if (offset >= lower_offset && offset < upper_offset) { |
| 1958 | /* Let offset represents offset in the current segment as p_t2t->attr is |
| 1959 | * prepared for one segment only */ |
| 1960 | offset %= RW_T2T_SEGMENT_BYTES; |
| 1961 | /* Every bit in p_t2t->attr indicates one byte of the tag is either a |
| 1962 | * lock/reserved byte or not |
| 1963 | * So, each array element in p_t2t->attr covers two blocks in the tag as |
| 1964 | * T2 block size is 4 and array element size is 8 |
| 1965 | * Set the corresponding bit in attr to indicate - reserved byte */ |
| 1966 | p_t2t->attr[offset / TAG_BITS_PER_BYTE] |= |
| 1967 | rw_t2t_mask_bits[offset % TAG_BITS_PER_BYTE]; |
| 1968 | } |
| 1969 | num_bytes++; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1970 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1971 | count++; |
| 1972 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1973 | } |
| 1974 | |
| 1975 | /******************************************************************************* |
| 1976 | ** |
| 1977 | ** Function rw_t2t_get_lock_bits_for_segment |
| 1978 | ** |
| 1979 | ** Description This function returns the offset of lock bits associated for |
| 1980 | ** the specified segment |
| 1981 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame] | 1982 | ** Parameters: segment: The segment number to which lock bits are |
| 1983 | ** associated |
| 1984 | ** p_start_byte: The offset of lock byte that contains the |
| 1985 | ** first lock bit for the segment |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 1986 | ** p_start_bit: The offset of the lock bit in the lock byte |
| 1987 | ** |
| 1988 | ** p_end_byte: The offset of the last bit associcated to the |
| 1989 | ** segment |
| 1990 | ** |
| 1991 | ** Returns Total number of lock bits assigned to the specified segment |
| 1992 | ** |
| 1993 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 1994 | static uint8_t rw_t2t_get_lock_bits_for_segment(uint8_t segment, |
| 1995 | uint8_t* p_start_byte, |
| 1996 | uint8_t* p_start_bit, |
| 1997 | uint8_t* p_end_byte) { |
| 1998 | uint8_t total_bits = 0; |
| 1999 | uint16_t byte_count = 0; |
| 2000 | uint16_t lower_offset, upper_offset; |
| 2001 | uint8_t num_dynamic_locks = 0; |
| 2002 | uint8_t bit_count = 0; |
| 2003 | uint8_t bytes_locked_per_bit; |
| 2004 | uint8_t num_bits; |
| 2005 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 2006 | bool b_all_bits_are_locks = true; |
| 2007 | uint16_t tag_size; |
| 2008 | uint8_t xx; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2009 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2010 | tag_size = (p_t2t->tag_hdr[T2T_CC2_TMS_BYTE] * T2T_TMS_TAG_FACTOR) + |
| 2011 | (T2T_FIRST_DATA_BLOCK * T2T_BLOCK_SIZE) + p_t2t->num_lockbytes; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2012 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2013 | for (xx = 0; xx < p_t2t->num_mem_tlvs; xx++) |
| 2014 | tag_size += p_t2t->mem_tlv[xx].num_bytes; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2015 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2016 | lower_offset = segment * RW_T2T_SEGMENT_BYTES; |
| 2017 | if (segment == 0) { |
| 2018 | lower_offset += T2T_STATIC_SIZE; |
| 2019 | } |
| 2020 | upper_offset = (segment + 1) * RW_T2T_SEGMENT_BYTES; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2021 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2022 | byte_count = T2T_STATIC_SIZE; |
| 2023 | if (tag_size < upper_offset) { |
| 2024 | upper_offset = tag_size; |
| 2025 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2026 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2027 | *p_start_byte = num_dynamic_locks; |
| 2028 | *p_start_bit = 0; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2029 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2030 | while ((byte_count <= lower_offset) && |
| 2031 | (num_dynamic_locks < p_t2t->num_lockbytes)) { |
| 2032 | bytes_locked_per_bit = |
| 2033 | p_t2t->lock_tlv[p_t2t->lockbyte[num_dynamic_locks].tlv_index] |
| 2034 | .bytes_locked_per_bit; |
| 2035 | /* Number of bits in the current lock byte */ |
| 2036 | b_all_bits_are_locks = |
| 2037 | ((p_t2t->lockbyte[num_dynamic_locks].byte_index + 1) * |
| 2038 | TAG_BITS_PER_BYTE <= |
| 2039 | p_t2t->lock_tlv[p_t2t->lockbyte[num_dynamic_locks].tlv_index] |
| 2040 | .num_bits); |
| 2041 | num_bits = |
| 2042 | b_all_bits_are_locks |
| 2043 | ? TAG_BITS_PER_BYTE |
| 2044 | : p_t2t->lock_tlv[p_t2t->lockbyte[num_dynamic_locks].tlv_index] |
| 2045 | .num_bits % |
| 2046 | TAG_BITS_PER_BYTE; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2047 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2048 | if (((bytes_locked_per_bit * num_bits) + byte_count) <= lower_offset) { |
| 2049 | /* Skip this lock byte as it covers different segment */ |
| 2050 | byte_count += bytes_locked_per_bit * num_bits; |
| 2051 | num_dynamic_locks++; |
| 2052 | } else { |
| 2053 | bit_count = 0; |
| 2054 | while (bit_count < num_bits) { |
| 2055 | byte_count += bytes_locked_per_bit; |
| 2056 | if (byte_count > lower_offset) { |
| 2057 | /* First lock bit that is used to lock this segment */ |
| 2058 | *p_start_byte = num_dynamic_locks; |
| 2059 | *p_end_byte = num_dynamic_locks; |
| 2060 | *p_start_bit = bit_count; |
| 2061 | bit_count++; |
| 2062 | total_bits = 1; |
| 2063 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2064 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2065 | bit_count++; |
| 2066 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2067 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2068 | } |
| 2069 | if (num_dynamic_locks == p_t2t->num_lockbytes) { |
| 2070 | return 0; |
| 2071 | } |
| 2072 | while ((byte_count < upper_offset) && |
| 2073 | (num_dynamic_locks < p_t2t->num_lockbytes)) { |
| 2074 | bytes_locked_per_bit = |
| 2075 | p_t2t->lock_tlv[p_t2t->lockbyte[num_dynamic_locks].tlv_index] |
| 2076 | .bytes_locked_per_bit; |
| 2077 | /* Number of bits in the current lock byte */ |
| 2078 | b_all_bits_are_locks = |
| 2079 | ((p_t2t->lockbyte[num_dynamic_locks].byte_index + 1) * |
| 2080 | TAG_BITS_PER_BYTE <= |
| 2081 | p_t2t->lock_tlv[p_t2t->lockbyte[num_dynamic_locks].tlv_index] |
| 2082 | .num_bits); |
| 2083 | num_bits = |
| 2084 | b_all_bits_are_locks |
| 2085 | ? TAG_BITS_PER_BYTE |
| 2086 | : p_t2t->lock_tlv[p_t2t->lockbyte[num_dynamic_locks].tlv_index] |
| 2087 | .num_bits % |
| 2088 | TAG_BITS_PER_BYTE; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2089 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2090 | if ((bytes_locked_per_bit * (num_bits - bit_count)) + byte_count < |
| 2091 | upper_offset) { |
| 2092 | /* Collect all lock bits that covers the current segment */ |
| 2093 | byte_count += bytes_locked_per_bit * (num_bits - bit_count); |
| 2094 | total_bits += num_bits - bit_count; |
| 2095 | bit_count = 0; |
| 2096 | *p_end_byte = num_dynamic_locks; |
| 2097 | num_dynamic_locks++; |
| 2098 | } else { |
| 2099 | /* The last lock byte that covers the current segment */ |
| 2100 | bit_count = 0; |
| 2101 | while (bit_count < num_bits) { |
| 2102 | /* The last lock bit that is used to lock this segment */ |
| 2103 | byte_count += bytes_locked_per_bit; |
| 2104 | if (byte_count >= upper_offset) { |
| 2105 | *p_end_byte = num_dynamic_locks; |
| 2106 | total_bits += (bit_count + 1); |
| 2107 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2108 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2109 | bit_count++; |
| 2110 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2111 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2112 | } |
| 2113 | return total_bits; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2114 | } |
| 2115 | |
| 2116 | /******************************************************************************* |
| 2117 | ** |
| 2118 | ** Function rw_t2t_update_lock_attributes |
| 2119 | ** |
| 2120 | ** Description This function will check if the tag index passed as |
| 2121 | ** argument is a locked byte and return TRUE or FALSE |
| 2122 | ** |
| 2123 | ** Parameters: index, the index of the byte in the tag |
| 2124 | ** |
| 2125 | ** |
| 2126 | ** Returns TRUE, if the specified index in the tag is a locked or |
| 2127 | ** reserved or otp byte |
| 2128 | ** FALSE, otherwise |
| 2129 | ** |
| 2130 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2131 | static void rw_t2t_update_lock_attributes(void) { |
| 2132 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 2133 | uint8_t xx = 0; |
| 2134 | uint8_t num_static_lock_bytes = 0; |
| 2135 | uint8_t num_dyn_lock_bytes = 0; |
| 2136 | uint8_t bits_covered = 0; |
| 2137 | uint8_t bytes_covered = 0; |
| 2138 | uint8_t block_count = 0; |
| 2139 | bool b_all_bits_are_locks = true; |
| 2140 | uint8_t bytes_locked_per_lock_bit; |
| 2141 | uint8_t start_lock_byte; |
| 2142 | uint8_t start_lock_bit; |
| 2143 | uint8_t end_lock_byte; |
| 2144 | uint8_t num_lock_bits; |
| 2145 | uint8_t total_bits; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2146 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2147 | /* Prepare lock_attr for the current segment */ |
| 2148 | memset(p_t2t->lock_attr, 0, RW_T2T_SEGMENT_SIZE * sizeof(uint8_t)); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2149 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2150 | block_count = 0; |
| 2151 | if (p_t2t->segment == 0) { |
| 2152 | /* Update lock_attributes based on static lock bytes */ |
| 2153 | xx = 0; |
| 2154 | num_static_lock_bytes = 0; |
| 2155 | block_count = 0; |
| 2156 | num_lock_bits = |
| 2157 | TAG_BITS_PER_BYTE - 1; /* the inner while loop increases xx by 2. need |
| 2158 | (-1) to avoid coverity overrun error */ |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2159 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2160 | while (num_static_lock_bytes < T2T_NUM_STATIC_LOCK_BYTES) { |
| 2161 | /* Update lock attribute based on 2 static locks */ |
| 2162 | while (xx < num_lock_bits) { |
| 2163 | p_t2t->lock_attr[block_count] = 0x00; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2164 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2165 | if (p_t2t->tag_hdr[T2T_STATIC_LOCK0 + num_static_lock_bytes] & |
| 2166 | rw_t2t_mask_bits[xx++]) { |
| 2167 | /* If the bit is set then 1 block is locked */ |
| 2168 | p_t2t->lock_attr[block_count] = 0x0F; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2169 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2170 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2171 | if (p_t2t->tag_hdr[T2T_STATIC_LOCK0 + num_static_lock_bytes] & |
| 2172 | rw_t2t_mask_bits[xx++]) { |
| 2173 | /* If the bit is set then 1 block is locked */ |
| 2174 | p_t2t->lock_attr[block_count] |= 0xF0; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2175 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2176 | block_count++; |
| 2177 | } |
| 2178 | num_static_lock_bytes++; |
| 2179 | xx = 0; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2180 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2181 | /* UID is always locked, irrespective of the lock value */ |
| 2182 | p_t2t->lock_attr[0x00] = 0xFF; |
| 2183 | } |
| 2184 | |
| 2185 | /* Get lock bits applicable for the current segment */ |
| 2186 | if ((total_bits = rw_t2t_get_lock_bits_for_segment( |
| 2187 | p_t2t->segment, &start_lock_byte, &start_lock_bit, |
| 2188 | &end_lock_byte)) != 0) { |
| 2189 | /* update lock_attributes based on current segment using dynamic lock bytes |
| 2190 | */ |
| 2191 | xx = start_lock_bit; |
| 2192 | num_dyn_lock_bytes = start_lock_byte; |
| 2193 | bits_covered = 0; |
| 2194 | bytes_covered = 0; |
| 2195 | num_lock_bits = TAG_BITS_PER_BYTE; |
| 2196 | p_t2t->lock_attr[block_count] = 0; |
| 2197 | |
| 2198 | while (num_dyn_lock_bytes <= end_lock_byte) { |
| 2199 | bytes_locked_per_lock_bit = |
| 2200 | p_t2t->lock_tlv[p_t2t->lockbyte[num_dyn_lock_bytes].tlv_index] |
| 2201 | .bytes_locked_per_bit; |
| 2202 | /* Find number of bits in the byte are lock bits */ |
| 2203 | b_all_bits_are_locks = |
| 2204 | ((p_t2t->lockbyte[num_dyn_lock_bytes].byte_index + 1) * |
| 2205 | TAG_BITS_PER_BYTE <= |
| 2206 | p_t2t->lock_tlv[p_t2t->lockbyte[num_dyn_lock_bytes].tlv_index] |
| 2207 | .num_bits); |
| 2208 | num_lock_bits = |
| 2209 | b_all_bits_are_locks |
| 2210 | ? TAG_BITS_PER_BYTE |
| 2211 | : p_t2t->lock_tlv[p_t2t->lockbyte[num_dyn_lock_bytes].tlv_index] |
| 2212 | .num_bits % |
| 2213 | TAG_BITS_PER_BYTE; |
| 2214 | |
| 2215 | while (xx < num_lock_bits) { |
| 2216 | bytes_covered = 0; |
| 2217 | while (bytes_covered < bytes_locked_per_lock_bit) { |
| 2218 | if (p_t2t->lockbyte[num_dyn_lock_bytes].lock_byte & |
| 2219 | rw_t2t_mask_bits[xx]) { |
| 2220 | /* If the bit is set then it is locked */ |
| 2221 | p_t2t->lock_attr[block_count] |= 0x01 << bits_covered; |
| 2222 | } |
| 2223 | bytes_covered++; |
| 2224 | bits_covered++; |
| 2225 | if (bits_covered == TAG_BITS_PER_BYTE) { |
| 2226 | /* Move to next 8 bytes */ |
| 2227 | bits_covered = 0; |
| 2228 | block_count++; |
| 2229 | /* Assume unlocked before updating using locks */ |
| 2230 | if (block_count < RW_T2T_SEGMENT_SIZE) |
| 2231 | p_t2t->lock_attr[block_count] = 0; |
| 2232 | } |
| 2233 | } |
| 2234 | xx++; |
| 2235 | } |
| 2236 | num_dyn_lock_bytes++; |
| 2237 | xx = 0; |
| 2238 | } |
| 2239 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2240 | } |
| 2241 | |
| 2242 | /******************************************************************************* |
| 2243 | ** |
| 2244 | ** Function rw_t2t_is_lock_res_byte |
| 2245 | ** |
| 2246 | ** Description This function will check if the tag index passed as |
| 2247 | ** argument is a lock or reserved or otp byte and return |
| 2248 | ** TRUE or FALSE |
| 2249 | ** |
| 2250 | ** Parameters: index, the index of the byte in the tag |
| 2251 | ** |
| 2252 | ** |
| 2253 | ** Returns TRUE, if the specified index in the tag is a locked or |
| 2254 | ** reserved or otp byte |
| 2255 | ** FALSE, otherwise |
| 2256 | ** |
| 2257 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2258 | static bool rw_t2t_is_lock_res_byte(uint16_t index) { |
| 2259 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2260 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2261 | p_t2t->segment = (uint8_t)(index / RW_T2T_SEGMENT_BYTES); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2262 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2263 | if (p_t2t->attr_seg != p_t2t->segment) { |
| 2264 | /* Update attributes for the current segment */ |
| 2265 | rw_t2t_update_attributes(); |
| 2266 | p_t2t->attr_seg = p_t2t->segment; |
| 2267 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2268 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2269 | index = index % RW_T2T_SEGMENT_BYTES; |
| 2270 | /* Every bit in p_t2t->attr indicates one specific byte of the tag is either a |
| 2271 | * lock/reserved byte or not |
| 2272 | * So, each array element in p_t2t->attr covers two blocks in the tag as T2 |
| 2273 | * block size is 4 and array element size is 8 |
| 2274 | * Find the block and offset for the index (passed as argument) and Check if |
| 2275 | * the offset bit in the |
| 2276 | * p_t2t->attr[block/2] is set or not. If the bit is set then it is a |
| 2277 | * lock/reserved byte, otherwise not */ |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2278 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2279 | return ((p_t2t->attr[index / 8] & rw_t2t_mask_bits[index % 8]) == 0) ? false |
| 2280 | : true; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2281 | } |
| 2282 | |
| 2283 | /******************************************************************************* |
| 2284 | ** |
| 2285 | ** Function rw_t2t_is_read_only_byte |
| 2286 | ** |
| 2287 | ** Description This function will check if the tag index passed as |
| 2288 | ** argument is a locked and return |
| 2289 | ** TRUE or FALSE |
| 2290 | ** |
| 2291 | ** Parameters: index, the index of the byte in the tag |
| 2292 | ** |
| 2293 | ** |
| 2294 | ** Returns TRUE, if the specified index in the tag is a locked or |
| 2295 | ** reserved or otp byte |
| 2296 | ** FALSE, otherwise |
| 2297 | ** |
| 2298 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2299 | static bool rw_t2t_is_read_only_byte(uint16_t index) { |
| 2300 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2301 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2302 | p_t2t->segment = (uint8_t)(index / RW_T2T_SEGMENT_BYTES); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2303 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2304 | if (p_t2t->lock_attr_seg != p_t2t->segment) { |
| 2305 | /* Update lock attributes for the current segment */ |
| 2306 | rw_t2t_update_lock_attributes(); |
| 2307 | p_t2t->lock_attr_seg = p_t2t->segment; |
| 2308 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2309 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2310 | index = index % RW_T2T_SEGMENT_BYTES; |
| 2311 | /* Every bit in p_t2t->lock_attr indicates one specific byte of the tag is a |
| 2312 | * read only byte or read write byte |
| 2313 | * So, each array element in p_t2t->lock_attr covers two blocks of the tag as |
| 2314 | * T2 block size is 4 and array element size is 8 |
| 2315 | * Find the block and offset for the index (passed as argument) and Check if |
| 2316 | * the offset bit in |
| 2317 | * p_t2t->lock_attr[block/2] is set or not. If the bit is set then it is a |
| 2318 | * read only byte, otherwise read write byte */ |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2319 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2320 | return ((p_t2t->lock_attr[index / 8] & rw_t2t_mask_bits[index % 8]) == 0) |
| 2321 | ? false |
| 2322 | : true; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2323 | } |
| 2324 | |
| 2325 | /******************************************************************************* |
| 2326 | ** |
| 2327 | ** Function rw_t2t_set_dynamic_lock_bits |
| 2328 | ** |
| 2329 | ** Description This function will set dynamic lock bits as part of |
| 2330 | ** configuring tag as read only |
| 2331 | ** |
| 2332 | ** Returns |
| 2333 | ** NFC_STATUS_OK, Command sent to set dynamic lock bits |
| 2334 | ** NFC_STATUS_FAILED: otherwise |
| 2335 | ** |
| 2336 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2337 | tNFC_STATUS rw_t2t_set_dynamic_lock_bits(uint8_t* p_data) { |
| 2338 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 2339 | uint8_t write_block[T2T_BLOCK_SIZE]; |
| 2340 | uint16_t offset; |
| 2341 | uint16_t next_offset; |
| 2342 | uint8_t num_bits; |
| 2343 | uint8_t next_num_bits; |
| 2344 | tNFC_STATUS status = NFC_STATUS_FAILED; |
| 2345 | uint8_t num_locks; |
| 2346 | uint8_t lock_count; |
| 2347 | bool b_all_bits_are_locks = true; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2348 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2349 | num_locks = 0; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2350 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2351 | memcpy(write_block, p_data, T2T_BLOCK_SIZE); |
| 2352 | while (num_locks < p_t2t->num_lockbytes) { |
| 2353 | if (p_t2t->lockbyte[num_locks].lock_status == RW_T2T_LOCK_NOT_UPDATED) { |
| 2354 | offset = p_t2t->lock_tlv[p_t2t->lockbyte[num_locks].tlv_index].offset + |
| 2355 | p_t2t->lockbyte[num_locks].byte_index; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2356 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2357 | /* Check if all bits are lock bits in the byte */ |
| 2358 | b_all_bits_are_locks = |
| 2359 | ((p_t2t->lockbyte[num_locks].byte_index + 1) * TAG_BITS_PER_BYTE <= |
| 2360 | p_t2t->lock_tlv[p_t2t->lockbyte[num_locks].tlv_index].num_bits); |
| 2361 | num_bits = |
| 2362 | b_all_bits_are_locks |
| 2363 | ? TAG_BITS_PER_BYTE |
| 2364 | : p_t2t->lock_tlv[p_t2t->lockbyte[num_locks].tlv_index].num_bits % |
| 2365 | TAG_BITS_PER_BYTE; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2366 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2367 | write_block[(uint8_t)(offset % T2T_BLOCK_SIZE)] |= |
| 2368 | tags_pow(2, num_bits) - 1; |
| 2369 | lock_count = num_locks + 1; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2370 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2371 | /* Set all the lock bits in the block using a sing block write command */ |
| 2372 | while (lock_count < p_t2t->num_lockbytes) { |
| 2373 | next_offset = |
| 2374 | p_t2t->lock_tlv[p_t2t->lockbyte[lock_count].tlv_index].offset + |
| 2375 | p_t2t->lockbyte[lock_count].byte_index; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2376 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2377 | /* Check if all bits are lock bits in the byte */ |
| 2378 | b_all_bits_are_locks = |
| 2379 | ((p_t2t->lockbyte[lock_count].byte_index + 1) * TAG_BITS_PER_BYTE <= |
| 2380 | p_t2t->lock_tlv[p_t2t->lockbyte[lock_count].tlv_index].num_bits); |
| 2381 | next_num_bits = |
| 2382 | b_all_bits_are_locks |
| 2383 | ? TAG_BITS_PER_BYTE |
| 2384 | : p_t2t->lock_tlv[p_t2t->lockbyte[lock_count].tlv_index] |
| 2385 | .num_bits % |
| 2386 | TAG_BITS_PER_BYTE; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2387 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2388 | if (next_offset / T2T_BLOCK_SIZE == offset / T2T_BLOCK_SIZE) { |
| 2389 | write_block[(uint8_t)(next_offset % T2T_BLOCK_SIZE)] |= |
| 2390 | tags_pow(2, next_num_bits) - 1; |
| 2391 | } else |
| 2392 | break; |
| 2393 | lock_count++; |
| 2394 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2395 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2396 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_SET_DYN_LOCK_BITS; |
| 2397 | /* send WRITE command to set dynamic lock bits */ |
| 2398 | if ((status = rw_t2t_write((uint16_t)(offset / T2T_BLOCK_SIZE), |
| 2399 | write_block)) == NFC_STATUS_OK) { |
| 2400 | while (lock_count > num_locks) { |
| 2401 | /* Set update initiated flag to indicate a write command is sent to |
| 2402 | * set dynamic lock bits of the block */ |
| 2403 | p_t2t->lockbyte[lock_count - 1].lock_status = |
| 2404 | RW_T2T_LOCK_UPDATE_INITIATED; |
| 2405 | lock_count--; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2406 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2407 | } else |
| 2408 | status = NFC_STATUS_FAILED; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2409 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2410 | break; |
| 2411 | } |
| 2412 | num_locks++; |
| 2413 | } |
| 2414 | |
| 2415 | return status; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2416 | } |
| 2417 | |
| 2418 | /******************************************************************************* |
| 2419 | ** |
| 2420 | ** Function rw_t2t_set_lock_tlv |
| 2421 | ** |
| 2422 | ** Description This function will set lock control tlv on the blank |
| 2423 | ** activated type 2 tag based on values read from version block |
| 2424 | ** |
| 2425 | ** Parameters: TAG data memory size |
| 2426 | ** |
| 2427 | ** Returns |
| 2428 | ** NFC_STATUS_OK, Command sent to set Lock TLV |
| 2429 | ** NFC_STATUS_FAILED: otherwise |
| 2430 | ** |
| 2431 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2432 | tNFC_STATUS rw_t2t_set_lock_tlv(uint16_t addr, uint8_t num_dyn_lock_bits, |
| 2433 | uint16_t locked_area_size) { |
| 2434 | tNFC_STATUS status = NFC_STATUS_FAILED; |
| 2435 | int8_t PageAddr = 0; |
| 2436 | int8_t BytePerPage = 0; |
| 2437 | int8_t ByteOffset = 0; |
| 2438 | uint8_t a; |
| 2439 | uint8_t data_block[T2T_BLOCK_SIZE]; |
| 2440 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 2441 | uint8_t* p; |
| 2442 | uint8_t xx; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2443 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2444 | for (xx = 15; xx > 0; xx--) { |
| 2445 | a = (uint8_t)(addr / xx); |
| 2446 | a += (addr % xx) ? 1 : 0; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2447 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2448 | BytePerPage = (int8_t)tags_log2(a); |
| 2449 | ByteOffset = (int8_t)(addr - xx * tags_pow(2, BytePerPage)); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2450 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2451 | if (ByteOffset < 16) { |
| 2452 | PageAddr = xx; |
| 2453 | break; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2454 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2455 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2456 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2457 | if ((ByteOffset < 16) && (BytePerPage < 16) && (PageAddr < 16)) { |
| 2458 | memset(data_block, 0, T2T_BLOCK_SIZE); |
| 2459 | p = data_block; |
| 2460 | UINT8_TO_BE_STREAM(p, T2T_TLV_TYPE_LOCK_CTRL); |
| 2461 | UINT8_TO_BE_STREAM(p, T2T_TLEN_LOCK_CTRL_TLV); |
| 2462 | UINT8_TO_BE_STREAM(p, (PageAddr << 4 | ByteOffset)); |
| 2463 | UINT8_TO_BE_STREAM(p, num_dyn_lock_bits); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2464 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2465 | p_t2t->tlv_value[0] = PageAddr << 4 | ByteOffset; |
| 2466 | p_t2t->tlv_value[1] = num_dyn_lock_bits; |
| 2467 | p_t2t->tlv_value[2] = |
| 2468 | (uint8_t)(BytePerPage << 4 | tags_log2(locked_area_size)); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2469 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2470 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_SET_LOCK_TLV; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2471 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2472 | /* send WRITE-E8 command */ |
| 2473 | if ((status = rw_t2t_write(T2T_FIRST_DATA_BLOCK, data_block)) == |
| 2474 | NFC_STATUS_OK) { |
| 2475 | p_t2t->b_read_data = false; |
| 2476 | } else |
| 2477 | p_t2t->substate = RW_T2T_SUBSTATE_NONE; |
| 2478 | } else |
| 2479 | status = NFC_STATUS_REJECTED; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2480 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2481 | return status; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2482 | } |
| 2483 | |
| 2484 | /******************************************************************************* |
| 2485 | ** |
| 2486 | ** Function rw_t2t_set_cc |
| 2487 | ** |
| 2488 | ** Description This function will set Capability Container on the activated |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame] | 2489 | ** type 2 tag with default values of CC0, CC1, CC4 and |
| 2490 | ** specified CC3 value |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2491 | ** |
| 2492 | ** Parameters: CC3 value of the tag |
| 2493 | ** |
| 2494 | ** Returns |
| 2495 | ** NFC_STATUS_OK, Command sent to set CC |
| 2496 | ** NFC_STATUS_FAILED: otherwise |
| 2497 | ** |
| 2498 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2499 | tNFC_STATUS rw_t2t_set_cc(uint8_t tms) { |
| 2500 | uint8_t cc_block[T2T_BLOCK_SIZE]; |
| 2501 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 2502 | tNFC_STATUS status = NFC_STATUS_FAILED; |
| 2503 | uint8_t* p; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2504 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2505 | memset(cc_block, 0, T2T_BLOCK_SIZE); |
| 2506 | memset(p_t2t->ndef_final_block, 0, T2T_BLOCK_SIZE); |
| 2507 | p = cc_block; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2508 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2509 | /* Prepare Capability Container */ |
| 2510 | UINT8_TO_BE_STREAM(p, T2T_CC0_NMN); |
| 2511 | UINT8_TO_BE_STREAM(p, T2T_CC1_VNO); |
| 2512 | UINT8_TO_BE_STREAM(p, tms); |
| 2513 | UINT8_TO_BE_STREAM(p, T2T_CC3_RWA_RW); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2514 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2515 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_SET_CC; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2516 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2517 | /* send WRITE-E8 command */ |
| 2518 | if ((status = rw_t2t_write(T2T_CC_BLOCK, cc_block)) == NFC_STATUS_OK) { |
| 2519 | p_t2t->state = RW_T2T_STATE_FORMAT_TAG; |
| 2520 | p_t2t->b_read_hdr = false; |
| 2521 | } else |
| 2522 | p_t2t->substate = RW_T2T_SUBSTATE_NONE; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2523 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2524 | return status; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2525 | } |
| 2526 | |
| 2527 | /******************************************************************************* |
| 2528 | ** |
| 2529 | ** Function rw_t2t_format_tag |
| 2530 | ** |
| 2531 | ** Description This function will format tag based on Manufacturer ID |
| 2532 | ** |
| 2533 | ** Returns |
| 2534 | ** NFC_STATUS_OK, Command sent to format Tag |
| 2535 | ** NFC_STATUS_FAILED: otherwise |
| 2536 | ** |
| 2537 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2538 | tNFC_STATUS rw_t2t_format_tag(void) { |
| 2539 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 2540 | const tT2T_INIT_TAG* p_ret; |
| 2541 | uint8_t tms; |
| 2542 | tNFC_STATUS status = NFC_STATUS_FAILED; |
| 2543 | bool b_blank_tag = true; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2544 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2545 | if ((p_ret = t2t_tag_init_data(p_t2t->tag_hdr[0], false, 0)) == NULL) { |
| 2546 | RW_TRACE_WARNING1( |
| 2547 | "rw_t2t_format_tag - Unknown Manufacturer ID: %u, Cannot Format the " |
| 2548 | "tag!", |
| 2549 | p_t2t->tag_hdr[0]); |
| 2550 | return (NFC_STATUS_FAILED); |
| 2551 | } |
| 2552 | |
| 2553 | if (p_t2t->tag_hdr[T2T_CC2_TMS_BYTE] != 0) { |
| 2554 | /* If OTP tag has valid NDEF Message, cannot format the tag */ |
| 2555 | if ((p_t2t->ndef_msg_len > 0) && (p_ret->b_otp)) { |
| 2556 | RW_TRACE_WARNING0( |
| 2557 | "rw_t2t_format_tag - Cannot Format a OTP tag with NDEF Message!"); |
| 2558 | return (NFC_STATUS_FAILED); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2559 | } |
| 2560 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2561 | if (((p_t2t->tag_hdr[T2T_CC0_NMN_BYTE] != 0) && |
| 2562 | (p_t2t->tag_hdr[T2T_CC0_NMN_BYTE] != T2T_CC0_NMN)) || |
| 2563 | ((p_t2t->tag_hdr[T2T_CC1_VNO_BYTE] != 0) && |
| 2564 | (p_t2t->tag_hdr[T2T_CC1_VNO_BYTE] != T2T_CC1_LEGACY_VNO) && |
| 2565 | (p_t2t->tag_hdr[T2T_CC1_VNO_BYTE] != T2T_CC1_VNO) && |
| 2566 | (p_t2t->tag_hdr[T2T_CC1_VNO_BYTE] != T2T_CC1_NEW_VNO))) { |
| 2567 | RW_TRACE_WARNING0("rw_t2t_format_tag - Tag not blank to Format!"); |
| 2568 | return (NFC_STATUS_FAILED); |
| 2569 | } else { |
| 2570 | tms = p_t2t->tag_hdr[T2T_CC2_TMS_BYTE]; |
| 2571 | b_blank_tag = false; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2572 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2573 | } else |
| 2574 | tms = p_ret->tms; |
| 2575 | |
| 2576 | memset(p_t2t->tag_data, 0, T2T_READ_DATA_LEN); |
| 2577 | |
| 2578 | if (!b_blank_tag || !p_ret->b_multi_version) { |
| 2579 | status = rw_t2t_set_cc(tms); |
| 2580 | } else if (p_ret->version_block != 0) { |
| 2581 | /* If Version number is not read, READ it now */ |
| 2582 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_READ_VERSION_INFO; |
| 2583 | |
| 2584 | if ((status = rw_t2t_read(p_ret->version_block)) == NFC_STATUS_OK) |
| 2585 | p_t2t->state = RW_T2T_STATE_FORMAT_TAG; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2586 | else |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2587 | p_t2t->substate = RW_T2T_SUBSTATE_NONE; |
| 2588 | } else { |
| 2589 | /* UID block is the version block */ |
| 2590 | p_t2t->state = RW_T2T_STATE_FORMAT_TAG; |
| 2591 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_READ_VERSION_INFO; |
| 2592 | rw_t2t_handle_format_tag_rsp(p_t2t->tag_hdr); |
| 2593 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2594 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2595 | return status; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2596 | } |
| 2597 | |
| 2598 | /******************************************************************************* |
| 2599 | ** |
| 2600 | ** Function rw_t2t_soft_lock_tag |
| 2601 | ** |
| 2602 | ** Description This function will soft lock the tag after validating CC. |
| 2603 | ** |
| 2604 | ** Returns |
| 2605 | ** NFC_STATUS_OK, Command sent to soft lock the tag |
| 2606 | ** NFC_STATUS_FAILED: otherwise |
| 2607 | ** |
| 2608 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2609 | tNFC_STATUS rw_t2t_soft_lock_tag(void) { |
| 2610 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 2611 | tNFC_STATUS status = NFC_STATUS_FAILED; |
| 2612 | uint8_t write_block[T2T_BLOCK_SIZE]; |
| 2613 | uint8_t num_locks; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2614 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2615 | /* If CC block is read and cc3 is soft locked, reject the command */ |
| 2616 | if ((p_t2t->tag_hdr[T2T_CC3_RWA_BYTE] & T2T_CC3_RWA_RO) == T2T_CC3_RWA_RO) { |
| 2617 | RW_TRACE_ERROR1( |
| 2618 | "rw_t2t_soft_lock_tag: Error: Type 2 tag is in Read only state, CC3: " |
| 2619 | "%u", |
| 2620 | p_t2t->tag_hdr[T2T_CC3_RWA_BYTE]); |
| 2621 | return (NFC_STATUS_FAILED); |
| 2622 | } |
| 2623 | |
| 2624 | if (p_t2t->b_hard_lock) { |
| 2625 | /* Should have performed NDEF Detection on dynamic memory structure tag, |
| 2626 | * before permanently converting to Read only |
| 2627 | * Even when no lock control tlv is present, default lock bytes should be |
| 2628 | * present */ |
| 2629 | |
| 2630 | if ((p_t2t->tag_hdr[T2T_CC2_TMS_BYTE] != T2T_CC2_TMS_STATIC) && |
| 2631 | (p_t2t->num_lockbytes == 0)) { |
| 2632 | RW_TRACE_ERROR0( |
| 2633 | "rw_t2t_soft_lock_tag: Error: Lock TLV not detected! Cannot hard " |
| 2634 | "lock the tag"); |
| 2635 | return (NFC_STATUS_FAILED); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2636 | } |
| 2637 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2638 | /* On dynamic memory structure tag, reset all lock bytes status to 'Not |
| 2639 | * Updated' if not in Updated status */ |
| 2640 | num_locks = 0; |
| 2641 | while (num_locks < p_t2t->num_lockbytes) { |
| 2642 | if (p_t2t->lockbyte[num_locks].lock_status != RW_T2T_LOCK_UPDATED) |
| 2643 | p_t2t->lockbyte[num_locks].lock_status = RW_T2T_LOCK_NOT_UPDATED; |
| 2644 | num_locks++; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2645 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2646 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2647 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2648 | memcpy(write_block, &p_t2t->tag_hdr[T2T_CC0_NMN_BYTE], T2T_BLOCK_SIZE); |
| 2649 | write_block[(T2T_CC3_RWA_BYTE % T2T_BLOCK_SIZE)] = T2T_CC3_RWA_RO; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2650 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2651 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_SET_CC_RO; |
| 2652 | /* First Soft lock the tag */ |
| 2653 | if ((status = rw_t2t_write(T2T_CC_BLOCK, write_block)) == NFC_STATUS_OK) { |
| 2654 | p_t2t->state = RW_T2T_STATE_SET_TAG_RO; |
| 2655 | p_t2t->b_read_hdr = false; |
| 2656 | } else { |
| 2657 | p_t2t->substate = RW_T2T_SUBSTATE_NONE; |
| 2658 | } |
| 2659 | return status; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2660 | } |
| 2661 | |
| 2662 | /***************************************************************************** |
| 2663 | ** |
| 2664 | ** Function RW_T2tFormatNDef |
| 2665 | ** |
| 2666 | ** Description |
| 2667 | ** Format Tag content |
| 2668 | ** |
| 2669 | ** Returns |
| 2670 | ** NFC_STATUS_OK, Command sent to format Tag |
| 2671 | ** NFC_STATUS_FAILED: otherwise |
| 2672 | ** |
| 2673 | *****************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2674 | tNFC_STATUS RW_T2tFormatNDef(void) { |
| 2675 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 2676 | tNFC_STATUS status = NFC_STATUS_FAILED; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2677 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2678 | if (p_t2t->state != RW_T2T_STATE_IDLE) { |
| 2679 | RW_TRACE_WARNING1("RW_T2tFormatNDef - Tag not initialized/ Busy! State: %u", |
| 2680 | p_t2t->state); |
| 2681 | return (NFC_STATUS_FAILED); |
| 2682 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2683 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2684 | if (!p_t2t->b_read_hdr) { |
| 2685 | /* If UID is not read, READ it now */ |
| 2686 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_READ_CC; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2687 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2688 | if ((status = rw_t2t_read(0)) == NFC_STATUS_OK) |
| 2689 | p_t2t->state = RW_T2T_STATE_FORMAT_TAG; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2690 | else |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2691 | p_t2t->substate = RW_T2T_SUBSTATE_NONE; |
| 2692 | } else { |
| 2693 | if ((status = rw_t2t_format_tag()) != NFC_STATUS_OK) |
| 2694 | p_t2t->b_read_hdr = false; |
| 2695 | } |
| 2696 | return status; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2697 | } |
| 2698 | |
| 2699 | /******************************************************************************* |
| 2700 | ** |
| 2701 | ** Function RW_T2tLocateTlv |
| 2702 | ** |
| 2703 | ** Description This function is used to perform TLV detection on a Type 2 |
| 2704 | ** tag, and retrieve the tag's TLV attribute information. |
| 2705 | ** |
| 2706 | ** Before using this API, the application must call |
| 2707 | ** RW_SelectTagType to indicate that a Type 2 tag has been |
| 2708 | ** activated. |
| 2709 | ** |
| 2710 | ** Parameters: tlv_type : TLV to detect |
| 2711 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame] | 2712 | ** Returns NCI_STATUS_OK, if detection was started. Otherwise, error |
| 2713 | ** status. |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2714 | ** |
| 2715 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2716 | tNFC_STATUS RW_T2tLocateTlv(uint8_t tlv_type) { |
| 2717 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 2718 | tNFC_STATUS status; |
| 2719 | uint16_t block; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2720 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2721 | if (p_t2t->state != RW_T2T_STATE_IDLE) { |
| 2722 | RW_TRACE_ERROR1("Error: Type 2 tag not activated or Busy - State: %u", |
| 2723 | p_t2t->state); |
| 2724 | return (NFC_STATUS_BUSY); |
| 2725 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2726 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2727 | if ((tlv_type != TAG_LOCK_CTRL_TLV) && (tlv_type != TAG_MEM_CTRL_TLV) && |
| 2728 | (tlv_type != TAG_NDEF_TLV) && (tlv_type != TAG_PROPRIETARY_TLV)) { |
| 2729 | RW_TRACE_API1("RW_T2tLocateTlv - Cannot search TLV: 0x%02x", tlv_type); |
| 2730 | return (NFC_STATUS_FAILED); |
| 2731 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2732 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2733 | if ((tlv_type == TAG_LOCK_CTRL_TLV) && (p_t2t->b_read_hdr) && |
| 2734 | (p_t2t->tag_hdr[T2T_CC2_TMS_BYTE] == T2T_CC2_TMS_STATIC)) { |
| 2735 | p_t2t->b_read_hdr = false; |
| 2736 | RW_TRACE_API1( |
| 2737 | "RW_T2tLocateTlv - No Lock tlv in static structure tag, CC[0]: 0x%02x", |
| 2738 | p_t2t->tag_hdr[T2T_CC2_TMS_BYTE]); |
| 2739 | return (NFC_STATUS_FAILED); |
| 2740 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2741 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2742 | if ((tlv_type == TAG_NDEF_TLV) && (p_t2t->b_read_hdr) && |
| 2743 | (p_t2t->tag_hdr[T2T_CC0_NMN_BYTE] != T2T_CC0_NMN)) { |
| 2744 | p_t2t->b_read_hdr = false; |
| 2745 | RW_TRACE_WARNING3( |
| 2746 | "RW_T2tLocateTlv - Invalid NDEF Magic Number!, CC[0]: 0x%02x, CC[1]: " |
| 2747 | "0x%02x, CC[3]: 0x%02x", |
| 2748 | p_t2t->tag_hdr[T2T_CC0_NMN_BYTE], p_t2t->tag_hdr[T2T_CC1_VNO_BYTE], |
| 2749 | p_t2t->tag_hdr[T2T_CC3_RWA_BYTE]); |
| 2750 | return (NFC_STATUS_FAILED); |
| 2751 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2752 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2753 | p_t2t->work_offset = 0; |
| 2754 | p_t2t->tlv_detect = tlv_type; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2755 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2756 | /* Reset control block variables based on type of tlv to detect */ |
| 2757 | if (tlv_type == TAG_LOCK_CTRL_TLV) { |
| 2758 | p_t2t->num_lockbytes = 0; |
| 2759 | p_t2t->num_lock_tlvs = 0; |
| 2760 | } else if (tlv_type == TAG_MEM_CTRL_TLV) { |
| 2761 | p_t2t->num_mem_tlvs = 0; |
| 2762 | } else if (tlv_type == TAG_NDEF_TLV) { |
| 2763 | p_t2t->ndef_msg_offset = 0; |
| 2764 | p_t2t->num_lockbytes = 0; |
| 2765 | p_t2t->num_lock_tlvs = 0; |
| 2766 | p_t2t->num_mem_tlvs = 0; |
| 2767 | p_t2t->ndef_msg_len = 0; |
| 2768 | p_t2t->ndef_status = T2T_NDEF_NOT_DETECTED; |
| 2769 | } else { |
| 2770 | p_t2t->prop_msg_len = 0; |
| 2771 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2772 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2773 | if (!p_t2t->b_read_hdr) { |
| 2774 | /* First read CC block */ |
| 2775 | block = 0; |
| 2776 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_READ_CC; |
| 2777 | } else { |
| 2778 | /* Read first data block */ |
| 2779 | block = T2T_FIRST_DATA_BLOCK; |
| 2780 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_TLV_DETECT; |
| 2781 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2782 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2783 | /* Start reading tag, looking for the specified TLV */ |
| 2784 | if ((status = rw_t2t_read((uint16_t)block)) == NFC_STATUS_OK) { |
| 2785 | p_t2t->state = RW_T2T_STATE_DETECT_TLV; |
| 2786 | } else { |
| 2787 | p_t2t->substate = RW_T2T_SUBSTATE_NONE; |
| 2788 | } |
| 2789 | return (status); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2790 | } |
| 2791 | |
| 2792 | /******************************************************************************* |
| 2793 | ** |
| 2794 | ** Function RW_T2tDetectNDef |
| 2795 | ** |
| 2796 | ** Description This function is used to perform NDEF detection on a Type 2 |
| 2797 | ** tag, and retrieve the tag's NDEF attribute information. |
| 2798 | ** |
| 2799 | ** Before using this API, the application must call |
| 2800 | ** RW_SelectTagType to indicate that a Type 2 tag has been |
| 2801 | ** activated. |
| 2802 | ** |
| 2803 | ** Parameters: none |
| 2804 | ** |
| 2805 | ** Returns NCI_STATUS_OK,if detect op started.Otherwise,error status. |
| 2806 | ** |
| 2807 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2808 | tNFC_STATUS RW_T2tDetectNDef(bool skip_dyn_locks) { |
| 2809 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
Evan Chu | c95c79c | 2013-04-12 17:38:09 -0400 | [diff] [blame] | 2810 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2811 | p_t2t->skip_dyn_locks = skip_dyn_locks; |
Evan Chu | c95c79c | 2013-04-12 17:38:09 -0400 | [diff] [blame] | 2812 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2813 | return RW_T2tLocateTlv(TAG_NDEF_TLV); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2814 | } |
| 2815 | |
| 2816 | /******************************************************************************* |
| 2817 | ** |
| 2818 | ** Function RW_T2tReadNDef |
| 2819 | ** |
| 2820 | ** Description Retrieve NDEF contents from a Type2 tag. |
| 2821 | ** |
| 2822 | ** The RW_T2T_NDEF_READ_EVT event is used to notify the |
| 2823 | ** application after reading the NDEF message. |
| 2824 | ** |
| 2825 | ** Before using this API, the RW_T2tDetectNDef function must |
| 2826 | ** be called to verify that the tag contains NDEF data, and to |
| 2827 | ** retrieve the NDEF attributes. |
| 2828 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame] | 2829 | ** Internally, this command will be separated into multiple |
| 2830 | ** Tag2 Read commands (if necessary) - depending on the NDEF |
| 2831 | ** Msg size |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2832 | ** |
| 2833 | ** Parameters: p_buffer: The buffer into which to read the NDEF message |
| 2834 | ** buf_len: The length of the buffer |
| 2835 | ** |
| 2836 | ** Returns NCI_STATUS_OK, if read was started. Otherwise, error status. |
| 2837 | ** |
| 2838 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2839 | tNFC_STATUS RW_T2tReadNDef(uint8_t* p_buffer, uint16_t buf_len) { |
| 2840 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 2841 | tNFC_STATUS status = NFC_STATUS_OK; |
| 2842 | uint16_t block; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2843 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2844 | if (p_t2t->state != RW_T2T_STATE_IDLE) { |
| 2845 | RW_TRACE_ERROR1("Error: Type 2 tag not activated or Busy - State: %u", |
| 2846 | p_t2t->state); |
| 2847 | return (NFC_STATUS_FAILED); |
| 2848 | } |
| 2849 | |
| 2850 | if (p_t2t->ndef_status == T2T_NDEF_NOT_DETECTED) { |
| 2851 | RW_TRACE_ERROR0("RW_T2tReadNDef - Error: NDEF detection not performed yet"); |
| 2852 | return (NFC_STATUS_FAILED); |
| 2853 | } |
| 2854 | |
| 2855 | if (buf_len < p_t2t->ndef_msg_len) { |
| 2856 | RW_TRACE_WARNING2( |
| 2857 | "RW_T2tReadNDef - buffer size: %u less than NDEF msg sise: %u", |
| 2858 | buf_len, p_t2t->ndef_msg_len); |
| 2859 | return (NFC_STATUS_FAILED); |
| 2860 | } |
| 2861 | |
| 2862 | if (!p_t2t->ndef_msg_len) { |
| 2863 | RW_TRACE_WARNING1("RW_T2tReadNDef - NDEF Message length is zero ", |
| 2864 | p_t2t->ndef_msg_len); |
| 2865 | return (NFC_STATUS_NOT_INITIALIZED); |
| 2866 | } |
| 2867 | |
| 2868 | p_t2t->p_ndef_buffer = p_buffer; |
| 2869 | p_t2t->work_offset = 0; |
| 2870 | |
| 2871 | block = (uint16_t)(p_t2t->ndef_msg_offset / T2T_BLOCK_LEN); |
| 2872 | block -= block % T2T_READ_BLOCKS; |
| 2873 | |
| 2874 | p_t2t->substate = RW_T2T_SUBSTATE_NONE; |
| 2875 | |
| 2876 | if ((block == T2T_FIRST_DATA_BLOCK) && (p_t2t->b_read_data)) { |
| 2877 | p_t2t->state = RW_T2T_STATE_READ_NDEF; |
| 2878 | p_t2t->block_read = T2T_FIRST_DATA_BLOCK; |
| 2879 | rw_t2t_handle_ndef_read_rsp(p_t2t->tag_data); |
| 2880 | } else { |
| 2881 | /* Start reading NDEF Message */ |
| 2882 | if ((status = rw_t2t_read(block)) == NFC_STATUS_OK) { |
| 2883 | p_t2t->state = RW_T2T_STATE_READ_NDEF; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2884 | } |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2885 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2886 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2887 | return (status); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2888 | } |
| 2889 | |
| 2890 | /******************************************************************************* |
| 2891 | ** |
| 2892 | ** Function RW_T2tWriteNDef |
| 2893 | ** |
| 2894 | ** Description Write NDEF contents to a Type2 tag. |
| 2895 | ** |
| 2896 | ** Before using this API, the RW_T2tDetectNDef |
| 2897 | ** function must be called to verify that the tag contains |
| 2898 | ** NDEF data, and to retrieve the NDEF attributes. |
| 2899 | ** |
| 2900 | ** The RW_T2T_NDEF_WRITE_EVT callback event will be used to |
| 2901 | ** notify the application of the response. |
| 2902 | ** |
Ruchi Kandoi | 552f2b7 | 2017-01-28 16:22:55 -0800 | [diff] [blame] | 2903 | ** Internally, this command will be separated into multiple |
| 2904 | ** Tag2 Write commands (if necessary) - depending on the NDEF |
| 2905 | ** Msg size |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2906 | ** |
| 2907 | ** Parameters: msg_len: The length of the buffer |
| 2908 | ** p_msg: The NDEF message to write |
| 2909 | ** |
| 2910 | ** Returns NCI_STATUS_OK,if write was started. Otherwise, error status |
| 2911 | ** |
| 2912 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2913 | tNFC_STATUS RW_T2tWriteNDef(uint16_t msg_len, uint8_t* p_msg) { |
| 2914 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
| 2915 | uint16_t block; |
| 2916 | const tT2T_INIT_TAG* p_ret; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2917 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2918 | tNFC_STATUS status = NFC_STATUS_OK; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2919 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2920 | if (p_t2t->state != RW_T2T_STATE_IDLE) { |
| 2921 | RW_TRACE_ERROR1("Error: Type 2 tag not activated or Busy - State: %u", |
| 2922 | p_t2t->state); |
| 2923 | return (NFC_STATUS_FAILED); |
| 2924 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2925 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2926 | if (p_t2t->ndef_status == T2T_NDEF_NOT_DETECTED) { |
| 2927 | RW_TRACE_ERROR0("RW_T2tWriteNDef - Error: NDEF detection not performed!"); |
| 2928 | return (NFC_STATUS_FAILED); |
| 2929 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2930 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2931 | if (p_t2t->tag_hdr[T2T_CC3_RWA_BYTE] != T2T_CC3_RWA_RW) { |
| 2932 | RW_TRACE_ERROR1("RW_T2tWriteNDef - Write access not granted - CC3: %u", |
| 2933 | p_t2t->tag_hdr[T2T_CC3_RWA_BYTE]); |
| 2934 | return (NFC_STATUS_REFUSED); |
| 2935 | } |
Martijn Coenen | 5c65c3a | 2013-03-27 13:23:36 -0700 | [diff] [blame] | 2936 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2937 | /* Check if there is enough memory on the tag */ |
| 2938 | if (msg_len > p_t2t->max_ndef_msg_len) { |
| 2939 | RW_TRACE_ERROR1( |
| 2940 | "RW_T2tWriteNDef - Cannot write NDEF of size greater than %u bytes", |
| 2941 | p_t2t->max_ndef_msg_len); |
| 2942 | return (NFC_STATUS_FAILED); |
| 2943 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2944 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2945 | /* If OTP tag and tag has valid NDEF Message, stop writting new NDEF Message |
| 2946 | * as it may corrupt the tag */ |
| 2947 | if ((p_t2t->ndef_msg_len > 0) && |
| 2948 | ((p_ret = t2t_tag_init_data(p_t2t->tag_hdr[0], false, 0)) != NULL) && |
| 2949 | (p_ret->b_otp)) { |
| 2950 | RW_TRACE_WARNING0( |
| 2951 | "RW_T2tWriteNDef - Cannot Overwrite NDEF Message on a OTP tag!"); |
| 2952 | return (NFC_STATUS_FAILED); |
| 2953 | } |
| 2954 | p_t2t->p_new_ndef_buffer = p_msg; |
| 2955 | p_t2t->new_ndef_msg_len = msg_len; |
| 2956 | p_t2t->work_offset = 0; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2957 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2958 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_READ_NDEF_FIRST_BLOCK; |
| 2959 | /* Read first NDEF Block before updating NDEF */ |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2960 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2961 | block = (uint16_t)(p_t2t->ndef_header_offset / T2T_BLOCK_LEN); |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2962 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2963 | if ((block < (T2T_FIRST_DATA_BLOCK + T2T_READ_BLOCKS)) && |
| 2964 | (p_t2t->b_read_data)) { |
| 2965 | p_t2t->state = RW_T2T_STATE_WRITE_NDEF; |
| 2966 | p_t2t->block_read = block; |
| 2967 | rw_t2t_handle_ndef_write_rsp( |
| 2968 | &p_t2t->tag_data[(block - T2T_FIRST_DATA_BLOCK) * T2T_BLOCK_LEN]); |
| 2969 | } else { |
| 2970 | if ((status = rw_t2t_read(block)) == NFC_STATUS_OK) |
| 2971 | p_t2t->state = RW_T2T_STATE_WRITE_NDEF; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2972 | else |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2973 | p_t2t->substate = RW_T2T_SUBSTATE_NONE; |
| 2974 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2975 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2976 | return status; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2977 | } |
| 2978 | |
| 2979 | /******************************************************************************* |
| 2980 | ** |
| 2981 | ** Function RW_T2tSetTagReadOnly |
| 2982 | ** |
| 2983 | ** Description This function can be called to set T2 tag as read only. |
| 2984 | ** |
| 2985 | ** Parameters: b_hard_lock: To indicate hard lock the tag or not |
| 2986 | ** |
| 2987 | ** Returns NCI_STATUS_OK, if setting tag as read only was started. |
| 2988 | ** Otherwise, error status. |
| 2989 | ** |
| 2990 | *******************************************************************************/ |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2991 | tNFC_STATUS RW_T2tSetTagReadOnly(bool b_hard_lock) { |
| 2992 | tNFC_STATUS status = NFC_STATUS_FAILED; |
| 2993 | tRW_T2T_CB* p_t2t = &rw_cb.tcb.t2t; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 2994 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 2995 | if (p_t2t->state != RW_T2T_STATE_IDLE) { |
| 2996 | RW_TRACE_ERROR1( |
| 2997 | "RW_T2tSetTagReadOnly: Error: Type 2 tag not activated or Busy - " |
| 2998 | "State: %u", |
| 2999 | p_t2t->state); |
| 3000 | return (NFC_STATUS_FAILED); |
| 3001 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 3002 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 3003 | p_t2t->b_hard_lock = b_hard_lock; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 3004 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 3005 | if (!p_t2t->b_read_hdr) { |
| 3006 | /* Read CC block before configuring tag as Read only */ |
| 3007 | p_t2t->substate = RW_T2T_SUBSTATE_WAIT_READ_CC; |
| 3008 | if ((status = rw_t2t_read((uint16_t)0)) == NFC_STATUS_OK) { |
| 3009 | p_t2t->state = RW_T2T_STATE_SET_TAG_RO; |
| 3010 | } else |
| 3011 | p_t2t->substate = RW_T2T_SUBSTATE_NONE; |
| 3012 | } else { |
| 3013 | if ((status = rw_t2t_soft_lock_tag()) != NFC_STATUS_OK) |
| 3014 | p_t2t->b_read_hdr = false; |
| 3015 | } |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 3016 | |
Ruchi Kandoi | 6fca02d | 2017-01-30 14:28:16 -0800 | [diff] [blame^] | 3017 | return status; |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 3018 | } |
| 3019 | |
Ruchi Kandoi | 303fec1 | 2016-12-14 13:22:38 -0800 | [diff] [blame] | 3020 | #endif /* (RW_NDEF_INCLUDED == TRUE) */ |
The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame] | 3021 | |
| 3022 | #endif /* (NFC_INCLUDED == TRUE) */ |