flipperzero-firmware/lib/ST25RFAL002/source/rfal_picopass.c
Eric Betts 8e9043003f
Picopass write (#1658)
* [picopass] Prevent false success with non-standard key
* UI for writing
* worker function for write
* Update write command value
* Show card read failure message

Co-authored-by: あく <alleteam@gmail.com>
2022-08-30 22:59:34 +09:00

185 lines
4.9 KiB
C

#include "rfal_picopass.h"
#include "utils.h"
#define TAG "RFAL_PICOPASS"
typedef struct {
uint8_t CMD;
uint8_t CSN[RFAL_PICOPASS_UID_LEN];
} rfalPicoPassSelectReq;
typedef struct {
uint8_t CMD;
uint8_t null[4];
uint8_t mac[4];
} rfalPicoPassCheckReq;
ReturnCode rfalPicoPassPollerInitialize(void) {
ReturnCode ret;
EXIT_ON_ERR(ret, rfalSetMode(RFAL_MODE_POLL_PICOPASS, RFAL_BR_26p48, RFAL_BR_26p48));
rfalSetErrorHandling(RFAL_ERRORHANDLING_NFC);
rfalSetGT(RFAL_GT_PICOPASS);
rfalSetFDTListen(RFAL_FDT_LISTEN_PICOPASS_POLLER);
rfalSetFDTPoll(RFAL_FDT_POLL_PICOPASS_POLLER);
return ERR_NONE;
}
ReturnCode rfalPicoPassPollerCheckPresence(void) {
ReturnCode ret;
uint8_t txBuf[1] = {RFAL_PICOPASS_CMD_ACTALL};
uint8_t rxBuf[32] = {0};
uint16_t recvLen = 0;
uint32_t flags = RFAL_PICOPASS_TXRX_FLAGS;
uint32_t fwt = rfalConvMsTo1fc(20);
ret = rfalTransceiveBlockingTxRx(txBuf, 1, rxBuf, 32, &recvLen, flags, fwt);
return ret;
}
ReturnCode rfalPicoPassPollerIdentify(rfalPicoPassIdentifyRes* idRes) {
ReturnCode ret;
uint8_t txBuf[1] = {RFAL_PICOPASS_CMD_IDENTIFY};
uint16_t recvLen = 0;
uint32_t flags = RFAL_PICOPASS_TXRX_FLAGS;
uint32_t fwt = rfalConvMsTo1fc(20);
ret = rfalTransceiveBlockingTxRx(
txBuf,
sizeof(txBuf),
(uint8_t*)idRes,
sizeof(rfalPicoPassIdentifyRes),
&recvLen,
flags,
fwt);
// printf("identify rx: %d %s\n", recvLen, hex2Str(idRes->CSN, RFAL_PICOPASS_UID_LEN));
return ret;
}
ReturnCode rfalPicoPassPollerSelect(uint8_t* csn, rfalPicoPassSelectRes* selRes) {
ReturnCode ret;
rfalPicoPassSelectReq selReq;
selReq.CMD = RFAL_PICOPASS_CMD_SELECT;
ST_MEMCPY(selReq.CSN, csn, RFAL_PICOPASS_UID_LEN);
uint16_t recvLen = 0;
uint32_t flags = RFAL_PICOPASS_TXRX_FLAGS;
uint32_t fwt = rfalConvMsTo1fc(20);
ret = rfalTransceiveBlockingTxRx(
(uint8_t*)&selReq,
sizeof(rfalPicoPassSelectReq),
(uint8_t*)selRes,
sizeof(rfalPicoPassSelectRes),
&recvLen,
flags,
fwt);
// printf("select rx: %d %s\n", recvLen, hex2Str(selRes->CSN, RFAL_PICOPASS_UID_LEN));
if(ret == ERR_TIMEOUT) {
return ERR_NONE;
}
return ret;
}
ReturnCode rfalPicoPassPollerReadCheck(rfalPicoPassReadCheckRes* rcRes) {
ReturnCode ret;
uint8_t txBuf[2] = {RFAL_PICOPASS_CMD_READCHECK, 0x02};
uint16_t recvLen = 0;
uint32_t flags = RFAL_PICOPASS_TXRX_FLAGS;
uint32_t fwt = rfalConvMsTo1fc(20);
ret = rfalTransceiveBlockingTxRx(
txBuf,
sizeof(txBuf),
(uint8_t*)rcRes,
sizeof(rfalPicoPassReadCheckRes),
&recvLen,
flags,
fwt);
// printf("readcheck rx: %d %s\n", recvLen, hex2Str(rcRes->CCNR, 8));
if(ret == ERR_CRC) {
return ERR_NONE;
}
return ret;
}
ReturnCode rfalPicoPassPollerCheck(uint8_t* mac, rfalPicoPassCheckRes* chkRes) {
ReturnCode ret;
rfalPicoPassCheckReq chkReq;
chkReq.CMD = RFAL_PICOPASS_CMD_CHECK;
ST_MEMCPY(chkReq.mac, mac, 4);
ST_MEMSET(chkReq.null, 0, 4);
uint16_t recvLen = 0;
uint32_t flags = RFAL_PICOPASS_TXRX_FLAGS;
uint32_t fwt = rfalConvMsTo1fc(20);
// printf("check tx: %s\n", hex2Str((uint8_t *)&chkReq, sizeof(rfalPicoPassCheckReq)));
ret = rfalTransceiveBlockingTxRx(
(uint8_t*)&chkReq,
sizeof(rfalPicoPassCheckReq),
(uint8_t*)chkRes,
sizeof(rfalPicoPassCheckRes),
&recvLen,
flags,
fwt);
// printf("check rx: %d %s\n", recvLen, hex2Str(chkRes->mac, 4));
if(ret == ERR_CRC) {
return ERR_NONE;
}
return ret;
}
ReturnCode rfalPicoPassPollerReadBlock(uint8_t blockNum, rfalPicoPassReadBlockRes* readRes) {
ReturnCode ret;
uint8_t txBuf[4] = {RFAL_PICOPASS_CMD_READ, 0, 0, 0};
txBuf[1] = blockNum;
uint16_t crc = rfalCrcCalculateCcitt(0xE012, txBuf + 1, 1);
memcpy(txBuf + 2, &crc, sizeof(uint16_t));
uint16_t recvLen = 0;
uint32_t flags = RFAL_PICOPASS_TXRX_FLAGS;
uint32_t fwt = rfalConvMsTo1fc(20);
ret = rfalTransceiveBlockingTxRx(
txBuf,
sizeof(txBuf),
(uint8_t*)readRes,
sizeof(rfalPicoPassReadBlockRes),
&recvLen,
flags,
fwt);
return ret;
}
ReturnCode rfalPicoPassPollerWriteBlock(uint8_t blockNum, uint8_t data[8], uint8_t mac[4]) {
ReturnCode ret;
uint8_t txBuf[14] = {RFAL_PICOPASS_CMD_WRITE, blockNum, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
memcpy(txBuf + 2, data, RFAL_PICOPASS_MAX_BLOCK_LEN);
memcpy(txBuf + 10, mac, 4);
uint16_t recvLen = 0;
uint32_t flags = RFAL_PICOPASS_TXRX_FLAGS;
uint32_t fwt = rfalConvMsTo1fc(20);
rfalPicoPassReadBlockRes block;
ret = rfalTransceiveBlockingTxRx(
txBuf, sizeof(txBuf), (uint8_t*)&block, sizeof(block), &recvLen, flags, fwt);
if(ret == ERR_NONE) {
// TODO: compare response
}
return ret;
}