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#include <stdio.h>
#include <sys/select.h>
#include <unistd.h>
#include <termios.h>
#include <getopt.h>
#include <errno.h>
#include <setjmp.h>
#include <signal.h>
#include "autoconf.h"
#include "intf.h"
struct tsnif_handle handle;
struct tsnif_term term;
static int killed = 0;
static int type = -1;
static int idx = -1;
static int display_slave = 1;
static int display_master = 0;
static int display_pty(int flags)
{
if ((flags == TSNIF_FLAGS_PTY_SLAVE) &&
!display_slave)
return 0;
if ((flags == TSNIF_FLAGS_PTY_MASTER) &&
!display_master)
return 0;
return 1;
}
static int data_cb(struct tsnif_term* term, struct tsnif_data *data)
{
/* rule out unwanted PTY channel */
if ((term->type == TSNIF_TYPE_PTY) &&
!display_pty(data->flags))
return 0;
fwrite(data->ptr, data->len, 1, stdout);
fflush(NULL);
return 0;
}
static int err_cb(struct tsnif_term *term, int err)
{
return err;
}
static int release_cb(struct tsnif_term *term)
{
return -1;
}
static int notify_cb(struct tsnif_term *term, int action)
{
return 0;
}
struct tsnif_ops ops = {
.cb_data = data_cb,
.cb_err = err_cb,
.cb_release = release_cb,
.cb_notify = notify_cb,
};
static void usage()
{
printf("tsnif -t <terminal type> -i <terminal index>\n");
printf(" where types can be 'tty', 'ttys' or 'pty'\n");
_exit(-1);
}
static void sig_handler(int sig)
{
printf("killed\n");
killed = 1;
}
int set_term(int set_init)
{
struct termios new_settings;
static struct termios init_settings;
if (set_init)
return tcsetattr(0, TCSANOW, &init_settings);
tcgetattr(0, &init_settings);
new_settings = init_settings;
new_settings.c_lflag &= ~ICANON;
new_settings.c_lflag &= ~ECHO;
return tcsetattr(0, TCSANOW, &new_settings);
}
static int get_type(char *optarg)
{
int i;
char *types[TSNIF_TYPE_MAX] = {
"tty", "ttys", "pty",
};
for(i = 0; i < TSNIF_TYPE_MAX; i++)
if (!strcmp(optarg, types[i]))
break;
return i;
}
static int get_args(int argc, char **argv)
{
while (1) {
int c;
int option_index = 0;
static struct option long_options[] = {
{"type", required_argument, 0, 't'},
{"idx", required_argument, 0, 'i'},
{"version", no_argument, 0, 'V'},
{"help", no_argument, 0, 'h'},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "t:i:vh",
long_options, &option_index);
if (c == -1)
break;
switch (c) {
case 't':
type = get_type(optarg);
if (type == TSNIF_TYPE_MAX)
return -1;
break;
case 'i':
errno = 0;
idx = strtol(optarg, (char **) NULL, 10);
if (errno) {
perror("strtol failed");
printf("strtol failed\n");
return -1;
}
break;
case 'v':
printf("tsnif "CONFIG_TSNIF_VER"\n");
break;
case 'h':
usage();
break;
default:
printf("unknown option '%c'", c);
} /* switch(c) */
} /* while(1) */
if ((type == -1) || (idx == -1))
return -1;
return 0;
}
static int process_input(void)
{
int c = getchar();
switch(c) {
case 's':
display_slave = !display_slave;
break;
case 'm':
display_master = !display_master;
break;
case 'q':
return -1;
default:
return 0;
}
printf("\ntsnif display [%s%s]\n",
display_master ? "M" : "",
display_slave ? "S" : "");
return 0;
}
int main(int argc, char **argv)
{
int err, ret;
jmp_buf env;
if (get_args(argc, argv))
usage();
err = tsnif_init(&handle, &ops);
if (err)
return err;
if ((ret = setjmp(env))) {
if (ret > 1) {
tsnif_detach(&term);
set_term(1);
}
tsnif_close(&handle);
printf("done err = %d\n", err);
return err;
}
err = tsnif_term_add(&handle, &term, type, idx);
if (err)
longjmp(env, 1);
err = tsnif_attach(&term);
if (err)
longjmp(env, 1);
set_term(0);
signal(SIGINT, sig_handler);
while(!killed) {
fd_set rfds;
struct timeval tv = { 1, 0};
int ts_fd = tsnif_fd(&handle), ret;
int in_fd = 0;
FD_ZERO(&rfds);
FD_SET(ts_fd, &rfds);
FD_SET(in_fd, &rfds);
ret = select(ts_fd + 1, &rfds, NULL, NULL, &tv);
if (ret == -1) {
perror("select()");
continue;
} else if (!ret)
continue;
if (FD_ISSET(ts_fd, &rfds) &&
tsnif_process(&handle))
longjmp(env, 2);
if (FD_ISSET(in_fd, &rfds) &&
process_input())
longjmp(env, 2);
}
longjmp(env, 2);
}
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