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Merge pull request #1396 from merlokk/desf_tx_chaining

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Desfire tx chaining
This commit is contained in:
Oleg Moiseenko 2021-07-28 23:07:09 +03:00 • committed by GitHub
commit 417acff358
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 62 additions and 12 deletions
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4
client/src/cmdhfmfdes.c
View file

@ -6394,7 +6394,7 @@ static int CmdHF14ADesReadData(const char *Cmd) {
}
if (resplen > 0) {
PrintAndLogEx(SUCCESS, "Read %u bytes from file 0x%02x offset %u", resplen, fnum, offset);
PrintAndLogEx(SUCCESS, "Read %zu bytes from file 0x%02x offset %u", resplen, fnum, offset);
print_buffer_with_offset(resp, resplen, offset, true);
} else {
PrintAndLogEx(SUCCESS, "Read operation returned no data from file %d", fnum);
@ -6444,7 +6444,7 @@ static int CmdHF14ADesReadData(const char *Cmd) {
PrintAndLogEx(SUCCESS, "Lastest record at the bottom.");
for (int i = 0; i < reccount; i++) {
if (i != 0)
PrintAndLogEx(SUCCESS, "Record %d", reccount - (i + offset + 1));
PrintAndLogEx(SUCCESS, "Record %zu", reccount - (i + offset + 1));
print_buffer_with_offset(&resp[i * reclen], reclen, offset, (i == 0));
}
} else {

54
client/src/mifare/desfirecore.c
View file

@ -381,19 +381,46 @@ static int DesfireExchangeNative(bool activate_field, DesfireContext *ctx, uint8
uint32_t i = 1;
uint8_t rcode = 0xff;
uint8_t cdata[255] = {0};
uint8_t cdata[1024] = {0};
uint32_t cdatalen = 0;
cdata[0] = cmd;
memcpy(&cdata[1], data, datalen);
cdatalen = datalen + 1;
int res = DESFIRESendRaw(activate_field, cdata, cdatalen, buf, sizeof(buf), &buflen, &rcode);
int res = 0;
size_t len = 0;
// tx chaining
size_t sentdatalen = 0;
while(cdatalen >= sentdatalen) {
if (cdatalen - sentdatalen > DESFIRE_TX_FRAME_MAX_LEN)
len = DESFIRE_TX_FRAME_MAX_LEN;
else
len = cdatalen - sentdatalen;
size_t sendindx = sentdatalen;
size_t sendlen = len;
if (sentdatalen > 0) {
sendindx--;
sendlen++;
cdata[sendindx] = MFDES_ADDITIONAL_FRAME;
}
res = DESFIRESendRaw(activate_field, &cdata[sendindx], sendlen, buf, sizeof(buf), &buflen, &rcode);
if (res != PM3_SUCCESS) {
uint16_t ssw = DESFIRE_GET_ISO_STATUS(rcode);
PrintAndLogEx(DEBUG, "error DESFIRESendRaw %s", DesfireGetErrorString(res, &ssw));
return res;
}
sentdatalen += len;
if (rcode != MFDES_ADDITIONAL_FRAME || buflen > 0) {
if (sentdatalen != cdatalen)
PrintAndLogEx(WARNING, "Tx chaining error. Needs to send: %d but sent: %d", cdatalen, sentdatalen);
break;
}
}
// rx
if (resp) {
if (splitbysize) {
resp[0] = buflen;
@ -468,12 +495,33 @@ static int DesfireExchangeISO(bool activate_field, DesfireContext *ctx, uint8_t
apdu.P2 = 0;
apdu.data = data;
int res = DESFIRESendApdu(activate_field, apdu, buf, sizeof(buf), &buflen, &sw);
int res = 0;
// tx chaining
size_t sentdatalen = 0;
while(datalen >= sentdatalen) {
if (datalen - sentdatalen > DESFIRE_TX_FRAME_MAX_LEN)
apdu.Lc = DESFIRE_TX_FRAME_MAX_LEN;
else
apdu.Lc = datalen - sentdatalen;
apdu.data = &data[sentdatalen];
if (sentdatalen > 0)
apdu.INS = MFDES_ADDITIONAL_FRAME;
res = DESFIRESendApdu(activate_field, apdu, buf, sizeof(buf), &buflen, &sw);
if (res != PM3_SUCCESS) {
PrintAndLogEx(DEBUG, "error DESFIRESendApdu %s", DesfireGetErrorString(res, &sw));
return res;
}
sentdatalen += apdu.Lc;
if (sw != DESFIRE_GET_ISO_STATUS(MFDES_ADDITIONAL_FRAME) || buflen > 0) {
if (sentdatalen != datalen)
PrintAndLogEx(WARNING, "Tx chaining error. Needs to send: %d but sent: %d", datalen, sentdatalen);
break;
}
}
if (respcode != NULL && ((sw & 0xff00) == 0x9100))
*respcode = sw & 0xff;

2
client/src/mifare/desfirecore.h
View file

@ -19,6 +19,8 @@
#include "mifare/desfire_crypto.h"
#include "mifare/mifare4.h"
#define DESFIRE_TX_FRAME_MAX_LEN 54
typedef struct {
const uint8_t id;
const char *text;