void
send_file(void)
{
const char *file;
FILE *f;
char buf[BUFSIZ], *expanded;
size_t len;
file = get_input("Local file?");
if (file == NULL || *file == '\0')
return;
expanded = tilde_expand(file);
f = fopen(expanded, "r");
if (f == NULL) {
cu_warn("%s", file);
return;
}
while (!feof(f) && !ferror(f)) {
len = fread(buf, 1, sizeof(buf), f);
if (len != 0)
bufferevent_write(line_ev, buf, len);
}
fclose(f);
free(expanded);
}
void
set_speed(void)
{
const char *s, *errstr;
int speed;
s = get_input("New speed?");
if (s == NULL || *s == '\0')
return;
speed = strtonum(s, 0, UINT_MAX, &errstr);
if (errstr != NULL) {
cu_warnx("speed is %s: %s", errstr, s);
return;
}
if (set_line(speed) != 0)
cu_warn("tcsetattr");
}
void
xmodem_send(const char *file)
{
FILE *f;
u_char buf[3 + XMODEM_BLOCK + 2], c;
size_t len, pktlen;
uint8_t num;
uint16_t crc;
int crc_mode;
u_int i, total;
struct termios tio;
struct sigaction act, oact;
f = fopen(file, "r");
if (f == NULL) {
cu_warn("%s", file);
return;
}
memset(&act, 0, sizeof(act));
sigemptyset(&act.sa_mask);
act.sa_flags = 0;
act.sa_handler = xmodem_signal;
if (sigaction(SIGINT, &act, &oact) != 0)
cu_err(1, "sigaction");
xmodem_stop = 0;
if (isatty(STDIN_FILENO)) {
memcpy(&tio, &saved_tio, sizeof(tio));
tio.c_lflag &= ~ECHO;
if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &tio) != 0)
cu_err(1, "tcsetattr");
}
tcflush(line_fd, TCIFLUSH);
if (xmodem_read(&c) != 0)
goto fail;
if (c == XMODEM_C)
crc_mode = 1;
else if (c == XMODEM_NAK)
crc_mode = 0;
else {
cu_warnx("%s: unexpected response \%03hho", file, c);
goto fail;
}
num = 1;
total = 1;
pktlen = 3 + XMODEM_BLOCK + (crc_mode ? 2 : 1);
for (;;) {
len = fread(buf + 3, 1, XMODEM_BLOCK, f);
if (len == 0)
break;
memset(buf + 3 + len, XMODEM_SUB, XMODEM_BLOCK - len);
buf[0] = XMODEM_SOH;
buf[1] = num;
buf[2] = 255 - num;
if (crc_mode) {
crc = xmodem_crc16(buf + 3, XMODEM_BLOCK);
buf[3 + XMODEM_BLOCK] = crc >> 8;
buf[3 + XMODEM_BLOCK + 1] = crc & 0xFF;
} else {
buf[3 + XMODEM_BLOCK] = 0;
for (i = 0; i < XMODEM_BLOCK; i++)
buf[3 + XMODEM_BLOCK] += buf[3 + i];
}
for (i = 0; i < XMODEM_RETRIES; i++) {
if (xmodem_stop) {
errno = EINTR;
goto fail;
}
cu_warnx("%s: sending block %u (attempt %u)", file,
total, 1 + i);
if (xmodem_write(buf, pktlen) != 0)
goto fail;
if (xmodem_read(&c) != 0)
goto fail;
if (c == XMODEM_ACK)
break;
if (c != XMODEM_NAK) {
cu_warnx("%s: unexpected response \%03hho",
file, c);
}
}
if (i == XMODEM_RETRIES) {
cu_warnx("%s: too many retries", file);
goto out;
}
if (len < XMODEM_BLOCK)
break;
num++;
total++;
}
