mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-17 05:03:07 +00:00
105 lines
2.6 KiB
C
105 lines
2.6 KiB
C
/*
|
|
* This file is part of the Trezor project, https://trezor.io/
|
|
*
|
|
* Copyright (c) SatoshiLabs
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "hidapi.h"
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
#include <arpa/inet.h>
|
|
|
|
int hid_init(void) {
|
|
return 0;
|
|
}
|
|
|
|
int hid_exit(void) {
|
|
return 0;
|
|
}
|
|
|
|
hid_device *hid_open_path(const char *path) {
|
|
|
|
int fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
|
|
if (fd < 0) {
|
|
fprintf(stderr, "Failed to create socket\n");
|
|
return NULL;
|
|
}
|
|
|
|
hid_device *d = malloc(sizeof(hid_device));
|
|
memset(d, 0, sizeof(hid_device));
|
|
d->fd = fd;
|
|
|
|
d->other.sin_family = AF_INET;
|
|
d->other.sin_port = htons(atoi(path));
|
|
d->other.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
|
|
d->slen = sizeof(d->other);
|
|
|
|
return d;
|
|
}
|
|
|
|
void hid_close(hid_device *device) {
|
|
if (device && device->fd) {
|
|
close(device->fd);
|
|
}
|
|
if (device) {
|
|
free(device);
|
|
}
|
|
}
|
|
|
|
int hid_write(hid_device *device, const unsigned char *data, size_t length) {
|
|
if (!device) {
|
|
fprintf(stderr, "Device can't be NULL\n");
|
|
return -1;
|
|
}
|
|
if (length != 65) {
|
|
fprintf(stderr, "Invalid packet size\n");
|
|
return -1;
|
|
}
|
|
ssize_t n = sendto(device->fd, data + 1, length - 1, 0, (const struct sockaddr *)&(device->other), device->slen);
|
|
if (n < 0 || ((size_t)n) != length - 1) {
|
|
fprintf(stderr, "Failed to write socket\n");
|
|
return -1;
|
|
}
|
|
usleep(1500);
|
|
return length;
|
|
}
|
|
|
|
int hid_read_timeout(hid_device *device, unsigned char *data, size_t length, int milliseconds) {
|
|
if (!device) {
|
|
fprintf(stderr, "Device can't be NULL\n");
|
|
return -1;
|
|
}
|
|
for (int i = 0; i < milliseconds; i++) {
|
|
usleep(1500);
|
|
ssize_t n = recvfrom(device->fd, data, length, MSG_DONTWAIT, (struct sockaddr *)&(device->other), &(device->slen));
|
|
if (n < 0) {
|
|
if (errno == EAGAIN && errno == EWOULDBLOCK) { // timeout tick
|
|
continue;
|
|
} else {
|
|
fprintf(stderr, "Failed to read socket\n");
|
|
return -1;
|
|
}
|
|
} else {
|
|
return n;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|