mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-21 13:58:08 +00:00
70 lines
1.6 KiB
C
70 lines
1.6 KiB
C
/*
|
|
* Copyright (c) Pavol Rusnak, SatoshiLabs
|
|
*
|
|
* Licensed under TREZOR License
|
|
* see LICENSE file for details
|
|
*/
|
|
|
|
#include <arpa/inet.h>
|
|
#include <sys/socket.h>
|
|
#include <fcntl.h>
|
|
#include <assert.h>
|
|
#include <stdlib.h>
|
|
|
|
#define TREZOR_UDP_PORT 21324
|
|
|
|
static int s;
|
|
static struct sockaddr_in si_me, si_other;
|
|
static socklen_t slen = 0;
|
|
|
|
void msg_init(void)
|
|
{
|
|
s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
|
|
assert(s != -1);
|
|
|
|
fcntl(s, F_SETFL, O_NONBLOCK);
|
|
|
|
si_me.sin_family = AF_INET;
|
|
const char *ip = getenv("TREZOR_UDP_IP");
|
|
if (ip) {
|
|
si_me.sin_addr.s_addr = inet_addr(ip);
|
|
} else {
|
|
si_me.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
|
|
}
|
|
const char *port = getenv("TREZOR_UDP_PORT");
|
|
if (port) {
|
|
si_me.sin_port = htons(atoi(port));
|
|
} else {
|
|
si_me.sin_port = htons(TREZOR_UDP_PORT);
|
|
}
|
|
|
|
int b;
|
|
b = bind(s, (struct sockaddr*)&si_me, sizeof(si_me));
|
|
assert(b != -1);
|
|
}
|
|
|
|
ssize_t msg_recv(uint8_t *iface, uint8_t *buf, size_t len)
|
|
{
|
|
struct sockaddr_in si;
|
|
socklen_t sl = sizeof(si);
|
|
memset(buf, 0, len);
|
|
*iface = 0; // TODO: return proper interface
|
|
ssize_t r = recvfrom(s, buf, len, MSG_DONTWAIT, (struct sockaddr *)&si, &sl);
|
|
if (r < 0) {
|
|
return r;
|
|
}
|
|
si_other = si;
|
|
slen = sl;
|
|
return r;
|
|
}
|
|
|
|
ssize_t msg_send(uint8_t iface, const uint8_t *buf, size_t len)
|
|
{
|
|
(void)iface; // TODO: ignore interface for now
|
|
ssize_t r = len;
|
|
if (slen > 0) {
|
|
r = sendto(s, buf, len, MSG_DONTWAIT, (const struct sockaddr *)&si_other, slen);
|
|
}
|
|
return r;
|
|
}
|