2 * Copyright (c) 2018 Yubico AB. All rights reserved.
3 * Use of this source code is governed by a BSD-style
4 * license that can be found in the LICENSE file.
10 iso7816_new(uint8_t cla, uint8_t ins, uint8_t p1, uint16_t payload_len)
15 alloc_len = sizeof(iso7816_apdu_t) + payload_len + 2; /* le1 le2 */
16 if ((apdu = calloc(1, alloc_len)) == NULL)
18 apdu->alloc_len = alloc_len;
19 apdu->payload_len = payload_len;
20 apdu->payload_ptr = apdu->payload;
21 apdu->header.cla = cla;
22 apdu->header.ins = ins;
24 apdu->header.lc2 = (uint8_t)((payload_len >> 8) & 0xff);
25 apdu->header.lc3 = (uint8_t)(payload_len & 0xff);
31 iso7816_free(iso7816_apdu_t **apdu_p)
35 if (apdu_p == NULL || (apdu = *apdu_p) == NULL)
37 freezero(apdu, apdu->alloc_len);
42 iso7816_add(iso7816_apdu_t *apdu, const void *buf, size_t cnt)
44 if (cnt > apdu->payload_len || cnt > UINT16_MAX)
46 memcpy(apdu->payload_ptr, buf, cnt);
47 apdu->payload_ptr += cnt;
48 apdu->payload_len = (uint16_t)(apdu->payload_len - cnt);
54 iso7816_ptr(const iso7816_apdu_t *apdu)
56 return (const unsigned char *)&apdu->header;
60 iso7816_len(const iso7816_apdu_t *apdu)
62 return apdu->alloc_len - offsetof(iso7816_apdu_t, header) -
63 (sizeof(iso7816_apdu_t) - offsetof(iso7816_apdu_t, payload));