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vpcd: allow *extended* length APDUs

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- don't predefine any limits on the transceive size
- fixes out of bounds access
This commit is contained in:
Frank Morgner
2018-02-05 21:05:37 +01:00
parent a9482d9f99
commit a63d35d224
7 changed files with 64 additions and 35 deletions
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10
virtualsmartcard/win32/BixVReader/VpcdReader.cpp
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@@ -44,17 +44,13 @@ bool VpcdReader::CheckATR() {
return r;
}
bool VpcdReader::QueryTransmit(BYTE *APDU,int APDUlen,BYTE *Resp,int *Resplen) {
unsigned char *rapdu = NULL;
ssize_t rapdu_len;
bool VpcdReader::QueryTransmit(BYTE *APDU,int APDUlen,BYTE **Resp,int *Resplen) {
bool r = false;
if (APDU && APDUlen && Resp && Resplen) {
rapdu_len = vicc_transmit((struct vicc_ctx *) ctx, APDUlen, APDU, &rapdu);
if (APDU && APDUlen && Resplen) {
ssize_t rapdu_len = vicc_transmit((struct vicc_ctx *) ctx, APDUlen, APDU, Resp);
if (rapdu_len > 0) {
memcpy(Resp, rapdu, rapdu_len);
*Resplen = rapdu_len;
free(rapdu);
r = true;
} else {
signalRemoval();