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smart upgrade - now uses NG, added crc for each transfer to verify data integrity before flashing

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This commit is contained in:
iceman1001 2020-10-26 00:38:13 +01:00
commit 57f226c922
3 changed files with 86 additions and 28 deletions
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38
armsrc/appmain.c
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@ -46,6 +46,7 @@
#include "util.h"
#include "ticks.h"
#include "commonutil.h"
#include "crc16.h"
#ifdef WITH_LCD
#include "LCD.h"
@ -1630,13 +1631,44 @@ static void PacketReceived(PacketCommandNG *packet) {
}
case CMD_SMART_UPLOAD: {
// upload file from client
struct p {
uint32_t idx;
uint32_t bytes_in_packet;
uint16_t crc;
uint8_t data[400];
} PACKED;
struct p *payload = (struct p *)packet->data.asBytes;
uint8_t *mem = BigBuf_get_addr();
memcpy(mem + packet->oldarg[0], packet->data.asBytes, PM3_CMD_DATA_SIZE);
reply_mix(CMD_ACK, 1, 0, 0, 0, 0);
memcpy(mem + payload->idx, payload->data, payload->bytes_in_packet);
uint8_t a = 0, b = 0;
compute_crc(CRC_14443_A, mem + payload->idx, payload->bytes_in_packet, &a, &b);
int res = PM3_SUCCESS;
if (payload->crc != (a << 8 | b)) {
DbpString("CRC Failed");
res = PM3_ESOFT;
}
reply_ng(CMD_SMART_UPLOAD, res, NULL, 0);
break;
}
case CMD_SMART_UPGRADE: {
SmartCardUpgrade(packet->oldarg[0]);
struct p {
uint16_t fw_size;
uint16_t crc;
} PACKED;
struct p *payload = (struct p *)packet->data.asBytes;
uint8_t *fwdata = BigBuf_get_addr();
uint8_t a = 0, b = 0;
compute_crc(CRC_14443_A, fwdata, payload->fw_size, &a, &b);
if (payload->crc != (a << 8 | b)) {
Dbprintf("CRC Failed, 0x[%04x] != 0x[%02x%02x]", payload->crc, a, b);
reply_ng(CMD_SMART_UPGRADE, PM3_ESOFT, NULL, 0);
} else {
SmartCardUpgrade(payload->fw_size);
}
fwdata = NULL;
break;
}
#endif