refactoring
This commit is contained in:
merlokk
Conor Patrick
parent
972760eb78
commit
dfb124dc8b
@ -520,13 +520,251 @@ int select_applet(uint8_t * aid, int len)
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return APP_NOTHING;
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}
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void nfc_process_iblock(uint8_t * buf, int len)
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void apdu_process(uint8_t buf0, uint8_t *apduptr, APDU_STRUCT *apdu)
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{
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int selected;
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CTAP_RESPONSE ctap_resp;
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int status;
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uint16_t reslen;
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// check CLA
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if (apdu->cla != 0x00 && apdu->cla != 0x80) {
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printf1(TAG_NFC, "Unknown CLA %02x\r\n", apdu->cla);
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nfc_write_response(buf0, SW_CLA_INVALID);
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return;
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}
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// TODO this needs to be organized better
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switch(apdu->ins)
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{
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// ISO 7816. 7.1 GET RESPONSE command
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case APDU_GET_RESPONSE:
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if (apdu->p1 != 0x00 || apdu->p2 != 0x00)
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{
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nfc_write_response(buf0, SW_INCORRECT_P1P2);
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printf1(TAG_NFC, "P1 or P2 error\r\n");
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return;
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}
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// too many bytes needs. 0x00 and 0x100 - any length
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if (apdu->le != 0 && apdu->le != 0x100 && apdu->le > chain_buffer_len)
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{
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uint16_t wlresp = SW_WRONG_LENGTH; // here can be 6700, 6C00, 6FXX. but the most standard way - 67XX or 6700
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if (chain_buffer_len <= 0xff)
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wlresp += chain_buffer_len & 0xff;
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nfc_write_response(buf0, wlresp);
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printf1(TAG_NFC, "buffer length less than requesteds\r\n");
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return;
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}
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// create temporary packet
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uint8_t pck[255] = {0};
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size_t pcklen = 253;
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if (apdu->le)
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pcklen = apdu->le;
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if (pcklen > chain_buffer_len)
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pcklen = chain_buffer_len;
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printf1(TAG_NFC, "GET RESPONSE. pck len: %d buffer len: %d\r\n", pcklen, chain_buffer_len);
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// create packet and add 61XX there if we have another portion(s) of data
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memmove(pck, chain_buffer, pcklen);
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size_t dlen = 0;
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if (chain_buffer_len - pcklen)
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{
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append_get_response(&pck[pcklen], chain_buffer_len - pcklen);
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dlen = 2;
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}
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// send
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nfc_write_response_chaining_plain(buf0, pck, pcklen + dlen); // dlen for 61XX
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// shift the buffer
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chain_buffer_len -= pcklen;
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memmove(chain_buffer, &chain_buffer[pcklen], chain_buffer_len);
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break;
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case APDU_INS_SELECT:
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// if (apdu->p1 == 0 && apdu->p2 == 0x0c)
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// {
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// printf1(TAG_NFC,"Select NDEF\r\n");
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//
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// NFC_STATE.selected_applet = APP_NDEF_TAG;
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// // Select NDEF file!
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// res[0] = NFC_CMD_IBLOCK | (buf[0] & 1);
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// res[1] = SW_SUCCESS>>8;
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// res[2] = SW_SUCCESS & 0xff;
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// nfc_write_frame(res, 3);
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// printf1(TAG_NFC,"<< "); dump_hex1(TAG_NFC,res, 3);
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// }
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// else
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{
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selected = select_applet(apdu->data, apdu->lc);
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if (selected == APP_FIDO)
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{
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nfc_write_response_ex(buf0, (uint8_t *)"U2F_V2", 6, SW_SUCCESS);
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printf1(TAG_NFC, "FIDO applet selected.\r\n");
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}
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else if (selected != APP_NOTHING)
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{
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nfc_write_response(buf0, SW_SUCCESS);
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printf1(TAG_NFC, "SELECTED %d\r\n", selected);
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}
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else
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{
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nfc_write_response(buf0, SW_FILE_NOT_FOUND);
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printf1(TAG_NFC, "NOT selected "); dump_hex1(TAG_NFC, apdu->data, apdu->lc);
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}
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}
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break;
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case APDU_FIDO_U2F_VERSION:
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if (NFC_STATE.selected_applet != APP_FIDO) {
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nfc_write_response(buf0, SW_INS_INVALID);
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break;
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}
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printf1(TAG_NFC, "U2F GetVersion command.\r\n");
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u2f_request_nfc(apduptr, apdu->data, apdu->lc, &ctap_resp);
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nfc_write_response_chaining(buf0, ctap_resp.data, ctap_resp.length, apdu->extended_apdu);
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break;
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case APDU_FIDO_U2F_REGISTER:
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if (NFC_STATE.selected_applet != APP_FIDO) {
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nfc_write_response(buf0, SW_INS_INVALID);
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break;
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}
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printf1(TAG_NFC, "U2F Register command.\r\n");
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if (apdu->lc != 64)
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{
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printf1(TAG_NFC, "U2F Register request length error. len=%d.\r\n", apdu->lc);
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nfc_write_response(buf0, SW_WRONG_LENGTH);
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return;
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}
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timestamp();
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// WTX_on(WTX_TIME_DEFAULT);
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// SystemClock_Config_LF32();
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// delay(300);
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if (device_is_nfc() == NFC_IS_ACTIVE) device_set_clock_rate(DEVICE_LOW_POWER_FAST);
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u2f_request_nfc(apduptr, apdu->data, apdu->lc, &ctap_resp);
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if (device_is_nfc() == NFC_IS_ACTIVE) device_set_clock_rate(DEVICE_LOW_POWER_IDLE);
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// if (!WTX_off())
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// return;
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printf1(TAG_NFC, "U2F resp len: %d\r\n", ctap_resp.length);
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printf1(TAG_NFC,"U2F Register P2 took %d\r\n", timestamp());
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nfc_write_response_chaining(buf0, ctap_resp.data, ctap_resp.length, apdu->extended_apdu);
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printf1(TAG_NFC,"U2F Register answered %d (took %d)\r\n", millis(), timestamp());
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break;
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case APDU_FIDO_U2F_AUTHENTICATE:
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if (NFC_STATE.selected_applet != APP_FIDO) {
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nfc_write_response(buf0, SW_INS_INVALID);
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break;
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}
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printf1(TAG_NFC, "U2F Authenticate command.\r\n");
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if (apdu->lc != 64 + 1 + apdu->data[64])
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{
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delay(5);
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printf1(TAG_NFC, "U2F Authenticate request length error. len=%d keyhlen=%d.\r\n", apdu->lc, apdu->data[64]);
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nfc_write_response(buf0, SW_WRONG_LENGTH);
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return;
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}
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timestamp();
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// WTX_on(WTX_TIME_DEFAULT);
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u2f_request_nfc(apduptr, apdu->data, apdu->lc, &ctap_resp);
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// if (!WTX_off())
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// return;
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printf1(TAG_NFC, "U2F resp len: %d\r\n", ctap_resp.length);
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printf1(TAG_NFC,"U2F Authenticate processing %d (took %d)\r\n", millis(), timestamp());
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nfc_write_response_chaining(buf0, ctap_resp.data, ctap_resp.length, apdu->extended_apdu);
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printf1(TAG_NFC,"U2F Authenticate answered %d (took %d)\r\n", millis(), timestamp);
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break;
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case APDU_FIDO_NFCCTAP_MSG:
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if (NFC_STATE.selected_applet != APP_FIDO) {
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nfc_write_response(buf0, SW_INS_INVALID);
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return;
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}
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printf1(TAG_NFC, "FIDO2 CTAP message. %d\r\n", timestamp());
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// WTX_on(WTX_TIME_DEFAULT);
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request_from_nfc(true);
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ctap_response_init(&ctap_resp);
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delay(1);
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printf1(TAG_NFC,"[%d] ", apdu->lc);
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dump_hex1(TAG_NFC, apdu->data, apdu->lc);
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status = ctap_request(apdu->data, apdu->lc, &ctap_resp);
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request_from_nfc(false);
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// if (!WTX_off())
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// return;
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printf1(TAG_NFC, "CTAP resp: 0x%02x len: %d\r\n", status, ctap_resp.length);
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if (status == CTAP1_ERR_SUCCESS)
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{
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memmove(&ctap_resp.data[1], &ctap_resp.data[0], ctap_resp.length);
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ctap_resp.length += 3;
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} else {
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ctap_resp.length = 3;
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}
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ctap_resp.data[0] = status;
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ctap_resp.data[ctap_resp.length - 2] = SW_SUCCESS >> 8;
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ctap_resp.data[ctap_resp.length - 1] = SW_SUCCESS & 0xff;
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printf1(TAG_NFC,"CTAP processing %d (took %d)\r\n", millis(), timestamp());
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nfc_write_response_chaining(buf0, ctap_resp.data, ctap_resp.length, apdu->extended_apdu);
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printf1(TAG_NFC,"CTAP answered %d (took %d)\r\n", millis(), timestamp());
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break;
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case APDU_INS_READ_BINARY:
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// response length
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reslen = apdu->le & 0xffff;
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switch(NFC_STATE.selected_applet)
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{
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case APP_CAPABILITY_CONTAINER:
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printf1(TAG_NFC,"APP_CAPABILITY_CONTAINER\r\n");
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if (reslen == 0 || reslen > sizeof(NFC_CC))
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reslen = sizeof(NFC_CC);
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nfc_write_response_ex(buf0, (uint8_t *)&NFC_CC, reslen, SW_SUCCESS);
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ams_wait_for_tx(10);
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break;
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case APP_NDEF_TAG:
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printf1(TAG_NFC,"APP_NDEF_TAG\r\n");
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if (reslen == 0 || reslen > sizeof(NDEF_SAMPLE) - 1)
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reslen = sizeof(NDEF_SAMPLE) - 1;
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nfc_write_response_ex(buf0, NDEF_SAMPLE, reslen, SW_SUCCESS);
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ams_wait_for_tx(10);
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break;
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default:
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nfc_write_response(buf0, SW_FILE_NOT_FOUND);
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printf1(TAG_ERR, "No binary applet selected!\r\n");
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return;
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break;
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}
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break;
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default:
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printf1(TAG_NFC, "Unknown INS %02x\r\n", apdu->ins);
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nfc_write_response(buf0, SW_INS_INVALID);
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break;
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}
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}
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void nfc_process_iblock(uint8_t * buf, int len)
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{
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uint8_t block_offset = p14443_block_offset(buf[0]);
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// clear tx chain buffer if we have some other command than GET RESPONSE
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@ -569,240 +807,8 @@ void nfc_process_iblock(uint8_t * buf, int len)
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printf1(TAG_NFC, "APDU chaining merge. %d/%d\r\n", chain_buffer_len, apdu.lc);
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}
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// check CLA
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if (apdu.cla != 0x00 && apdu.cla != 0x80) {
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printf1(TAG_NFC, "Unknown CLA %02x\r\n", apdu.cla);
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nfc_write_response(buf[0], SW_CLA_INVALID);
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return;
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}
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// TODO this needs to be organized better
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switch(apdu.ins)
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{
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// ISO 7816. 7.1 GET RESPONSE command
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case APDU_GET_RESPONSE:
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if (apdu.p1 != 0x00 || apdu.p2 != 0x00)
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{
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nfc_write_response(buf[0], SW_INCORRECT_P1P2);
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printf1(TAG_NFC, "P1 or P2 error\r\n");
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return;
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}
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// too many bytes needs. 0x00 and 0x100 - any length
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if (apdu.le != 0 && apdu.le != 0x100 && apdu.le > chain_buffer_len)
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{
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uint16_t wlresp = SW_WRONG_LENGTH; // here can be 6700, 6C00, 6FXX. but the most standard way - 67XX or 6700
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if (chain_buffer_len <= 0xff)
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wlresp += chain_buffer_len & 0xff;
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nfc_write_response(buf[0], wlresp);
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printf1(TAG_NFC, "buffer length less than requesteds\r\n");
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return;
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}
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// create temporary packet
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uint8_t pck[255] = {0};
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size_t pcklen = 253;
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if (apdu.le)
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pcklen = apdu.le;
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if (pcklen > chain_buffer_len)
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pcklen = chain_buffer_len;
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printf1(TAG_NFC, "GET RESPONSE. pck len: %d buffer len: %d\r\n", pcklen, chain_buffer_len);
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// create packet and add 61XX there if we have another portion(s) of data
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memmove(pck, chain_buffer, pcklen);
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size_t dlen = 0;
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if (chain_buffer_len - pcklen)
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{
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append_get_response(&pck[pcklen], chain_buffer_len - pcklen);
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dlen = 2;
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}
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// send
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nfc_write_response_chaining_plain(buf[0], pck, pcklen + dlen); // dlen for 61XX
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// shift the buffer
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chain_buffer_len -= pcklen;
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memmove(chain_buffer, &chain_buffer[pcklen], chain_buffer_len);
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break;
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case APDU_INS_SELECT:
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// if (apdu->p1 == 0 && apdu->p2 == 0x0c)
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// {
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// printf1(TAG_NFC,"Select NDEF\r\n");
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//
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// NFC_STATE.selected_applet = APP_NDEF_TAG;
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// // Select NDEF file!
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// res[0] = NFC_CMD_IBLOCK | (buf[0] & 1);
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// res[1] = SW_SUCCESS>>8;
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// res[2] = SW_SUCCESS & 0xff;
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// nfc_write_frame(res, 3);
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// printf1(TAG_NFC,"<< "); dump_hex1(TAG_NFC,res, 3);
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// }
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// else
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{
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selected = select_applet(apdu.data, apdu.lc);
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if (selected == APP_FIDO)
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{
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nfc_write_response_ex(buf[0], (uint8_t *)"U2F_V2", 6, SW_SUCCESS);
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printf1(TAG_NFC, "FIDO applet selected.\r\n");
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}
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else if (selected != APP_NOTHING)
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{
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nfc_write_response(buf[0], SW_SUCCESS);
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printf1(TAG_NFC, "SELECTED %d\r\n", selected);
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}
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else
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{
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nfc_write_response(buf[0], SW_FILE_NOT_FOUND);
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printf1(TAG_NFC, "NOT selected "); dump_hex1(TAG_NFC, apdu.data, apdu.lc);
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}
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}
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break;
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case APDU_FIDO_U2F_VERSION:
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if (NFC_STATE.selected_applet != APP_FIDO) {
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nfc_write_response(buf[0], SW_INS_INVALID);
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break;
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}
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printf1(TAG_NFC, "U2F GetVersion command.\r\n");
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u2f_request_nfc(&buf[block_offset], apdu.data, apdu.lc, &ctap_resp);
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nfc_write_response_chaining(buf[0], ctap_resp.data, ctap_resp.length, apdu.extended_apdu);
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break;
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case APDU_FIDO_U2F_REGISTER:
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if (NFC_STATE.selected_applet != APP_FIDO) {
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nfc_write_response(buf[0], SW_INS_INVALID);
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break;
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}
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printf1(TAG_NFC, "U2F Register command.\r\n");
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if (apdu.lc != 64)
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{
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printf1(TAG_NFC, "U2F Register request length error. len=%d.\r\n", apdu.lc);
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nfc_write_response(buf[0], SW_WRONG_LENGTH);
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return;
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}
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timestamp();
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// WTX_on(WTX_TIME_DEFAULT);
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// SystemClock_Config_LF32();
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// delay(300);
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if (device_is_nfc() == NFC_IS_ACTIVE) device_set_clock_rate(DEVICE_LOW_POWER_FAST);
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u2f_request_nfc(&buf[block_offset], apdu.data, apdu.lc, &ctap_resp);
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if (device_is_nfc() == NFC_IS_ACTIVE) device_set_clock_rate(DEVICE_LOW_POWER_IDLE);
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// if (!WTX_off())
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// return;
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printf1(TAG_NFC, "U2F resp len: %d\r\n", ctap_resp.length);
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printf1(TAG_NFC,"U2F Register P2 took %d\r\n", timestamp());
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nfc_write_response_chaining(buf[0], ctap_resp.data, ctap_resp.length, apdu.extended_apdu);
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printf1(TAG_NFC,"U2F Register answered %d (took %d)\r\n", millis(), timestamp());
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break;
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case APDU_FIDO_U2F_AUTHENTICATE:
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if (NFC_STATE.selected_applet != APP_FIDO) {
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nfc_write_response(buf[0], SW_INS_INVALID);
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break;
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}
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printf1(TAG_NFC, "U2F Authenticate command.\r\n");
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if (apdu.lc != 64 + 1 + apdu.data[64])
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{
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delay(5);
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printf1(TAG_NFC, "U2F Authenticate request length error. len=%d keyhlen=%d.\r\n", apdu.lc, apdu.data[64]);
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nfc_write_response(buf[0], SW_WRONG_LENGTH);
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return;
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}
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timestamp();
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// WTX_on(WTX_TIME_DEFAULT);
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u2f_request_nfc(&buf[block_offset], apdu.data, apdu.lc, &ctap_resp);
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// if (!WTX_off())
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// return;
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|
||||
printf1(TAG_NFC, "U2F resp len: %d\r\n", ctap_resp.length);
|
||||
printf1(TAG_NFC,"U2F Authenticate processing %d (took %d)\r\n", millis(), timestamp());
|
||||
nfc_write_response_chaining(buf[0], ctap_resp.data, ctap_resp.length, apdu.extended_apdu);
|
||||
printf1(TAG_NFC,"U2F Authenticate answered %d (took %d)\r\n", millis(), timestamp);
|
||||
break;
|
||||
|
||||
case APDU_FIDO_NFCCTAP_MSG:
|
||||
if (NFC_STATE.selected_applet != APP_FIDO) {
|
||||
nfc_write_response(buf[0], SW_INS_INVALID);
|
||||
return;
|
||||
}
|
||||
|
||||
printf1(TAG_NFC, "FIDO2 CTAP message. %d\r\n", timestamp());
|
||||
|
||||
// WTX_on(WTX_TIME_DEFAULT);
|
||||
request_from_nfc(true);
|
||||
ctap_response_init(&ctap_resp);
|
||||
delay(1);
|
||||
printf1(TAG_NFC,"[%d] ", apdu.lc);
|
||||
dump_hex1(TAG_NFC,apdu.data, apdu.lc);
|
||||
status = ctap_request(apdu.data, apdu.lc, &ctap_resp);
|
||||
request_from_nfc(false);
|
||||
// if (!WTX_off())
|
||||
// return;
|
||||
|
||||
printf1(TAG_NFC, "CTAP resp: 0x%02x len: %d\r\n", status, ctap_resp.length);
|
||||
|
||||
if (status == CTAP1_ERR_SUCCESS)
|
||||
{
|
||||
memmove(&ctap_resp.data[1], &ctap_resp.data[0], ctap_resp.length);
|
||||
ctap_resp.length += 3;
|
||||
} else {
|
||||
ctap_resp.length = 3;
|
||||
}
|
||||
ctap_resp.data[0] = status;
|
||||
ctap_resp.data[ctap_resp.length - 2] = SW_SUCCESS >> 8;
|
||||
ctap_resp.data[ctap_resp.length - 1] = SW_SUCCESS & 0xff;
|
||||
|
||||
printf1(TAG_NFC,"CTAP processing %d (took %d)\r\n", millis(), timestamp());
|
||||
nfc_write_response_chaining(buf[0], ctap_resp.data, ctap_resp.length, apdu.extended_apdu);
|
||||
printf1(TAG_NFC,"CTAP answered %d (took %d)\r\n", millis(), timestamp());
|
||||
break;
|
||||
|
||||
case APDU_INS_READ_BINARY:
|
||||
// response length
|
||||
reslen = apdu.le & 0xffff;
|
||||
switch(NFC_STATE.selected_applet)
|
||||
{
|
||||
case APP_CAPABILITY_CONTAINER:
|
||||
printf1(TAG_NFC,"APP_CAPABILITY_CONTAINER\r\n");
|
||||
if (reslen == 0 || reslen > sizeof(NFC_CC))
|
||||
reslen = sizeof(NFC_CC);
|
||||
nfc_write_response_ex(buf[0], (uint8_t *)&NFC_CC, reslen, SW_SUCCESS);
|
||||
ams_wait_for_tx(10);
|
||||
break;
|
||||
case APP_NDEF_TAG:
|
||||
printf1(TAG_NFC,"APP_NDEF_TAG\r\n");
|
||||
if (reslen == 0 || reslen > sizeof(NDEF_SAMPLE) - 1)
|
||||
reslen = sizeof(NDEF_SAMPLE) - 1;
|
||||
nfc_write_response_ex(buf[0], NDEF_SAMPLE, reslen, SW_SUCCESS);
|
||||
ams_wait_for_tx(10);
|
||||
break;
|
||||
default:
|
||||
nfc_write_response(buf[0], SW_FILE_NOT_FOUND);
|
||||
printf1(TAG_ERR, "No binary applet selected!\r\n");
|
||||
return;
|
||||
break;
|
||||
}
|
||||
break;
|
||||
|
||||
default:
|
||||
printf1(TAG_NFC, "Unknown INS %02x\r\n", apdu.ins);
|
||||
nfc_write_response(buf[0], SW_INS_INVALID);
|
||||
break;
|
||||
}
|
||||
apdu_process(buf[0], &buf[block_offset], &apdu);
|
||||
|
||||
printf1(TAG_NFC,"prev.Iblock: ");
|
||||
dump_hex1(TAG_NFC, buf, len);
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user