mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-17 20:08:12 +00:00
131 lines
3.1 KiB
C
131 lines
3.1 KiB
C
/*
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* Copyright (c) Pavol Rusnak, SatoshiLabs
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*
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* Licensed under TREZOR License
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* see LICENSE file for details
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*/
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#include <arpa/inet.h>
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#include <sys/socket.h>
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#include <sys/poll.h>
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#include <fcntl.h>
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#include <assert.h>
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#include <stdlib.h>
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#include <string.h>
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#include "../../trezorhal/usb.h"
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#include "../../trezorhal/touch.h"
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void __attribute__((noreturn)) __fatal_error(const char *expr, const char *msg, const char *file, int line, const char *func);
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#define ensure(expr, msg) (((expr) == sectrue) ? (void)0 : __fatal_error(#expr, msg, __FILE__, __LINE__, __func__))
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#define TREZOR_UDP_IFACE 0
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#define TREZOR_UDP_PORT 21324
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static int sock;
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static struct sockaddr_in si_me, si_other;
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static socklen_t slen = 0;
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void usb_init(const usb_dev_info_t *dev_info) {
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(void)dev_info;
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sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
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ensure(sectrue * (sock >= 0), NULL);
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fcntl(sock, F_SETFL, O_NONBLOCK);
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si_me.sin_family = AF_INET;
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const char *ip = getenv("TREZOR_UDP_IP");
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if (ip) {
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si_me.sin_addr.s_addr = inet_addr(ip);
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} else {
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si_me.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
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}
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const char *port = getenv("TREZOR_UDP_PORT");
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if (port) {
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si_me.sin_port = htons(atoi(port));
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} else {
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si_me.sin_port = htons(TREZOR_UDP_PORT);
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}
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ensure(sectrue * (0 == bind(sock, (struct sockaddr*)&si_me, sizeof(si_me))), NULL);
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}
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void usb_deinit(void) {
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}
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void usb_start(void) {
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}
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void usb_stop(void) {
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}
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secbool usb_hid_add(const usb_hid_info_t *info) {
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return sectrue;
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}
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secbool usb_vcp_add(const usb_vcp_info_t *info) {
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return sectrue;
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}
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secbool usb_hid_can_read(uint8_t iface_num) {
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if (iface_num != TREZOR_UDP_IFACE) {
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return secfalse;
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}
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struct pollfd fds[] = {
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{ sock, POLLIN, 0 },
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};
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int r = poll(fds, 1, 0);
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return sectrue * (r > 0);
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}
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secbool usb_hid_can_write(uint8_t iface_num) {
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if (iface_num != TREZOR_UDP_IFACE) {
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return secfalse;
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}
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struct pollfd fds[] = {
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{ sock, POLLOUT, 0 },
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};
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int r = poll(fds, 1, 0);
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return sectrue * (r > 0);
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}
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int usb_hid_read(uint8_t iface_num, uint8_t *buf, uint32_t len) {
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if (iface_num != TREZOR_UDP_IFACE) {
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return 0;
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}
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struct sockaddr_in si;
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socklen_t sl = sizeof(si);
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ssize_t r = recvfrom(sock, buf, len, MSG_DONTWAIT, (struct sockaddr *)&si, &sl);
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if (r < 0) {
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return r;
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}
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si_other = si;
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slen = sl;
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static const char *ping_req = "PINGPING";
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static const char *ping_resp = "PONGPONG";
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if (r == strlen(ping_req) && memcmp(ping_req, buf, strlen(ping_req)) == 0) {
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usb_hid_write(0, (const uint8_t *)ping_resp, strlen(ping_resp));
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return 0;
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}
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return r;
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}
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int usb_hid_write(uint8_t iface_num, const uint8_t *buf, uint32_t len) {
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if (iface_num != TREZOR_UDP_IFACE) {
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return 0;
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}
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ssize_t r = len;
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if (slen > 0) {
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r = sendto(sock, buf, len, MSG_DONTWAIT, (const struct sockaddr *)&si_other, slen);
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}
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return r;
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}
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void pendsv_kbd_intr(void) {
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}
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void mp_hal_set_vcp_iface(int iface_num) {
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}
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