34 tx_pkt(fido_dev_t *d, const void *pkt, size_t len, int *ms)
40 		return (-1);
42 	n = d->io.write(d->io_handle, pkt, len);
45 		return (-1);
51 tx_empty(fido_dev_t *d, uint8_t cmd, int *ms)  in tx_empty()  argument
54 	unsigned char	 pkt[sizeof(*fp) + 1];  in tx_empty()
55 	const size_t	 len = d->tx_len + 1;  in tx_empty()
59 	fp = (struct frame *)(pkt + 1);  in tx_empty()
60 	fp->cid = d->cid;  in tx_empty()
63 	if (len > sizeof(pkt) || (n = tx_pkt(d, pkt, len, ms)) < 0 ||  in tx_empty()
65 		return (-1);  in tx_empty()
71 tx_preamble(fido_dev_t *d, uint8_t cmd, const void *buf, size_t count, int *ms)  in tx_preamble()  argument
74 	unsigned char	 pkt[sizeof(*fp) + 1];  in tx_preamble()
75 	const size_t	 len = d->tx_len + 1;  in tx_preamble()
78 	if (d->tx_len - CTAP_INIT_HEADER_LEN > sizeof(fp->body.init.data))  in tx_preamble()
82 	fp = (struct frame *)(pkt + 1);  in tx_preamble()
83 	fp->cid = d->cid;  in tx_preamble()
87 	count = MIN(count, d->tx_len - CTAP_INIT_HEADER_LEN);  in tx_preamble()
90 	if (len > sizeof(pkt) || (n = tx_pkt(d, pkt, len, ms)) < 0 ||  in tx_preamble()
98 tx_frame(fido_dev_t *d, uint8_t seq, const void *buf, size_t count, int *ms)  in tx_frame()  argument
101 	unsigned char	 pkt[sizeof(*fp) + 1];  in tx_frame()
102 	const size_t	 len = d->tx_len + 1;  in tx_frame()
105 	if (d->tx_len - CTAP_CONT_HEADER_LEN > sizeof(fp->body.cont.data))  in tx_frame()
109 	fp = (struct frame *)(pkt + 1);  in tx_frame()
110 	fp->cid = d->cid;  in tx_frame()
112 	count = MIN(count, d->tx_len - CTAP_CONT_HEADER_LEN);  in tx_frame()
115 	if (len > sizeof(pkt) || (n = tx_pkt(d, pkt, len, ms)) < 0 ||  in tx_frame()
123 tx(fido_dev_t *d, uint8_t cmd, const unsigned char *buf, size_t count, int *ms)  in tx()  argument
127 	if ((sent = tx_preamble(d, cmd, buf, count, ms)) == 0) {  in tx()
129 		return (-1);  in tx()
135 			return (-1);  in tx()
137 		if ((n = tx_frame(d, seq++, buf + sent, count - sent,  in tx()
140 			return (-1);  in tx()
148 transport_tx(fido_dev_t *d, uint8_t cmd, const void *buf, size_t count, int *ms)  in transport_tx()  argument
154 		return (-1);  in transport_tx()
156 	n = d->transport.tx(d, cmd, buf, count);  in transport_tx()
159 		return (-1);  in transport_tx()
165 fido_tx(fido_dev_t *d, uint8_t cmd, const void *buf, size_t count, int *ms)  in fido_tx()  argument
167 	fido_log_debug("%s: dev=%p, cmd=0x%02x", __func__, (void *)d, cmd);  in fido_tx()
170 	if (d->transport.tx != NULL)  in fido_tx()
171 		return (transport_tx(d, cmd, buf, count, ms));  in fido_tx()
172 	if (d->io_handle == NULL || d->io.write == NULL || count > UINT16_MAX) {  in fido_tx()
174 		return (-1);  in fido_tx()
177 	return (count == 0 ? tx_empty(d, cmd, ms) : tx(d, cmd, buf, count, ms));  in fido_tx()
181 rx_frame(fido_dev_t *d, struct frame *fp, int *ms)  in rx_frame()  argument
189 		return (-1);  in rx_frame()
191 	if (d->rx_len > sizeof(*fp) || (n = d->io.read(d->io_handle,  in rx_frame()
192 	    (unsigned char *)fp, d->rx_len, *ms)) < 0 || (size_t)n != d->rx_len)  in rx_frame()
193 		return (-1);  in rx_frame()
199 rx_preamble(fido_dev_t *d, uint8_t cmd, struct frame *fp, int *ms)  in rx_preamble()  argument
202 		if (rx_frame(d, fp, ms) < 0)  in rx_preamble()
203 			return (-1);  in rx_preamble()
205 		fp->cid = d->cid;  in rx_preamble()
207 	} while (fp->cid != d->cid || (fp->cid == d->cid &&  in rx_preamble()
210 	if (d->rx_len > sizeof(*fp))  in rx_preamble()
211 		return (-1);  in rx_preamble()
213 	fido_log_xxd(fp, d->rx_len, "%s", __func__);  in rx_preamble()
218 	if (fp->cid != d->cid || fp->body.init.cmd != (CTAP_FRAME_INIT | cmd)) {  in rx_preamble()
220 		    __func__, fp->cid, d->cid, fp->body.init.cmd, cmd);  in rx_preamble()
221 		return (-1);  in rx_preamble()
228 rx(fido_dev_t *d, uint8_t cmd, unsigned char *buf, size_t count, int *ms)  in rx()  argument
233 	if (d->rx_len <= CTAP_INIT_HEADER_LEN ||  in rx()
234 	    d->rx_len <= CTAP_CONT_HEADER_LEN)  in rx()
235 		return (-1);  in rx()
237 	init_data_len = d->rx_len - CTAP_INIT_HEADER_LEN;  in rx()
238 	cont_data_len = d->rx_len - CTAP_CONT_HEADER_LEN;  in rx()
242 		return (-1);  in rx()
244 	if (rx_preamble(d, cmd, &f, ms) < 0) {  in rx()
246 		return (-1);  in rx()
254 		return (-1);  in rx()
266 		if (rx_frame(d, &f, ms) < 0) {  in rx()
268 			return (-1);  in rx()
271 		fido_log_xxd(&f, d->rx_len, "%s", __func__);  in rx()
273 		f.cid = d->cid;  in rx()
277 		if (f.cid != d->cid || f.body.cont.seq != seq) {  in rx()
278 			fido_log_debug("%s: cid (0x%x, 0x%x), seq (%d, %d)",  in rx()
279 			    __func__, f.cid, d->cid, f.body.cont.seq, seq);  in rx()
280 			return (-1);  in rx()
296 transport_rx(fido_dev_t *d, uint8_t cmd, void *buf, size_t count, int *ms)  in transport_rx()  argument
302 		return (-1);  in transport_rx()
304 	n = d->transport.rx(d, cmd, buf, count, *ms);  in transport_rx()
307 		return (-1);  in transport_rx()
313 fido_rx(fido_dev_t *d, uint8_t cmd, void *buf, size_t count, int *ms)  in fido_rx()  argument
317 	fido_log_debug("%s: dev=%p, cmd=0x%02x, ms=%d", __func__, (void *)d,  in fido_rx()
320 	if (d->transport.rx != NULL)  in fido_rx()
321 		return (transport_rx(d, cmd, buf, count, ms));  in fido_rx()
322 	if (d->io_handle == NULL || d->io.read == NULL || count > UINT16_MAX) {  in fido_rx()
324 		return (-1);  in fido_rx()
326 	if ((n = rx(d, cmd, buf, count, ms)) >= 0)  in fido_rx()
333 fido_rx_cbor_status(fido_dev_t *d, int *ms)  in fido_rx_cbor_status()  argument
344 	if ((msglen = fido_rx(d, CTAP_CMD_CBOR, msg, FIDO_MAXMSG, ms)) < 0 ||  in fido_rx_cbor_status()
345 	    (size_t)msglen < 1) {  in fido_rx_cbor_status()