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clear works

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This commit is contained in:
merlokk 2021-07-26 17:12:48 +03:00
parent bdb067dd4c
commit 414ad304cd
1 changed files with 51 additions and 2 deletions
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53
client/src/cmdhfmfdes.c
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@ -6504,7 +6504,6 @@ static int CmdHF14ADesDeleteFile(const char *Cmd) {
return PM3_SUCCESS;
}
// {"value", CmdHF14ADesValueOperations, IfPm3Iso14443a, "[new]Operations with value file (get/credit/limited credit/debit/clear)"},
static int CmdHF14ADesValueOperations(const char *Cmd) {
CLIParserContext *ctx;
CLIParserInit(&ctx, "hf mfdes value",
@ -6607,7 +6606,7 @@ static int CmdHF14ADesValueOperations(const char *Cmd) {
DropField();
return PM3_ESOFT;
}
PrintAndLogEx(SUCCESS, "Value changed " _GREEN_("successfully"));
}
} else {
@ -6620,6 +6619,56 @@ static int CmdHF14ADesValueOperations(const char *Cmd) {
if (verbose)
PrintAndLogEx(INFO, "current value: 0x%08x", value);
uint8_t buf[250] = {0};
size_t buflen = 0;
res = DesfireGetFileSettings(&dctx, fileid, buf, &buflen);
if (res != PM3_SUCCESS) {
PrintAndLogEx(ERR, "Desfire GetFileSettings command " _RED_("error") ". Result: %d", res);
DropField();
return PM3_ESOFT;
}
if (verbose)
PrintAndLogEx(INFO, "file settings[%d]: %s", buflen, sprint_hex(buf, buflen));
if (buflen < 8 || buf[0] != 0x02) {
PrintAndLogEx(ERR, "Desfire GetFileSettings command returns " _RED_("wrong") " data");
DropField();
return PM3_ESOFT;
}
uint32_t minvalue = MemLeToUint4byte(&buf[4]);
uint32_t delta = (value > minvalue) ? value - minvalue : 0;
if (verbose) {
PrintAndLogEx(INFO, "minimum value: 0x%08x", minvalue);
PrintAndLogEx(INFO, "delta value : 0x%08x", delta);
}
if (delta > 0) {
res = DesfireValueFileOperations(&dctx, fileid, MFDES_DEBIT, &delta);
if (res != PM3_SUCCESS) {
PrintAndLogEx(ERR, "Desfire Debit operation " _RED_("error") ". Result: %d", res);
DropField();
return PM3_ESOFT;
}
if (verbose)
PrintAndLogEx(INFO, "Value debited");
DesfireCommitTrqansaction(&dctx, false, 0);
if (res != PM3_SUCCESS) {
PrintAndLogEx(ERR, "Desfire CommitTrqansaction command " _RED_("error") ". Result: %d", res);
DropField();
return PM3_ESOFT;
}
if (verbose)
PrintAndLogEx(INFO, "Transaction commited");
} else {
if (verbose)
PrintAndLogEx(INFO, "Nothing to clear. Vallue allready in the minimum level.");
}
PrintAndLogEx(SUCCESS, "Value cleared " _GREEN_("successfully"));
}