github/proxmark3
1
0
Fork 0
mirror of https://github.com/Proxmark/proxmark3.git synced 2025-08-21 22:03:19 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions

refactoring: process response format 1 from GPO

Browse source
This commit is contained in:
merlokk 2018-10-08 20:12:11 +03:00
commit c9e51701a8
1 changed files with 32 additions and 27 deletions
Download patch file Download diff file Expand all files Collapse all files

59
client/emv/cmdemv.c
View file

@ -598,6 +598,36 @@ void InitTransactionParameters(struct tlvdb *tlvRoot, bool paramLoadJSON, enum T
}
}
void ProcessGPOResponseFormat1(struct tlvdb *tlvRoot, uint8_t *buf, size_t len, bool decodeTLV) {
if (buf[0] == 0x80) {
if (decodeTLV){
PrintAndLog("GPO response format1:");
TLVPrintFromBuffer(buf, len);
}
if (len < 4 || (len - 4) % 4) {
PrintAndLog("ERROR: GPO response format1 parsing error. length=%d", len);
} else {
// AIP
struct tlvdb * f1AIP = tlvdb_fixed(0x82, 2, buf + 2);
tlvdb_add(tlvRoot, f1AIP);
if (decodeTLV){
PrintAndLog("\n* * Decode response format 1 (0x80) AIP and AFL:");
TLVPrintFromTLV(f1AIP);
}
// AFL
struct tlvdb * f1AFL = tlvdb_fixed(0x94, len - 4, buf + 2 + 2);
tlvdb_add(tlvRoot, f1AFL);
if (decodeTLV)
TLVPrintFromTLV(f1AFL);
}
} else {
if (decodeTLV)
TLVPrintFromBuffer(buf, len);
}
}
int CmdHFEMVExec(const char *cmd) {
uint8_t buf[APDU_RES_LEN] = {0};
size_t len = 0;
@ -740,33 +770,7 @@ int CmdHFEMVExec(const char *cmd) {
}
// process response template format 1 [id:80 2b AIP + x4b AFL] and format 2 [id:77 TLV]
if (buf[0] == 0x80) {
if (decodeTLV){
PrintAndLog("GPO response format1:");
TLVPrintFromBuffer(buf, len);
}
if (len < 4 || (len - 4) % 4) {
PrintAndLog("ERROR: GPO response format1 parsing error. length=%d", len);
} else {
// AIP
struct tlvdb * f1AIP = tlvdb_fixed(0x82, 2, buf + 2);
tlvdb_add(tlvRoot, f1AIP);
if (decodeTLV){
PrintAndLog("\n* * Decode response format 1 (0x80) AIP and AFL:");
TLVPrintFromTLV(f1AIP);
}
// AFL
struct tlvdb * f1AFL = tlvdb_fixed(0x94, len - 4, buf + 2 + 2);
tlvdb_add(tlvRoot, f1AFL);
if (decodeTLV)
TLVPrintFromTLV(f1AFL);
}
} else {
if (decodeTLV)
TLVPrintFromBuffer(buf, len);
}
ProcessGPOResponseFormat1(tlvRoot, buf, len, decodeTLV);
// extract PAN from track2
{
@ -1266,6 +1270,7 @@ int CmdHFEMVScan(const char *cmd) {
PrintAndLog("GPO error(%d): %4x. Exit...", res, sw);
return 7;
}
ProcessGPOResponseFormat1(tlvRoot, buf, len, decodeTLV);
struct tlvdb *gpofci = tlvdb_parse_multi(buf, len);
if (extractTLVElements)