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/******************************************************************************
(c) 2002-2008 Christine Caulfield christine.caulfield@googlemail.com
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 2 of the License, or
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.
*******************************************************************************/
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <signal.h>
#include <stdlib.h>
#include <ctype.h>
#include <termios.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/fcntl.h>
#include <netdnet/dn.h>
#include <netdnet/dnetdb.h>
#include "dn_endian.h"
#include "dnlogin.h"
/* The global state */
int termfd = -1;
int exit_char = 035; /* Default to ^] */
int finished = 0; /* terminate mainloop */
int debug = 0;
int char_timeout = 0;
int timeout_valid = 0;
static int mainloop(void)
{
while (!finished)
{
char inbuf[1024];
struct timeval tv;
int res;
int sockfd = found_getsockfd();
fd_set in_set;
tv.tv_usec = 0;
tv.tv_sec = char_timeout;
FD_ZERO(&in_set);
FD_SET(termfd, &in_set);
FD_SET(sockfd, &in_set);
if ( (res=select(FD_SETSIZE, &in_set, NULL, NULL, timeout_valid?&tv:NULL)) < 0)
{
break;
}
if (res == 0 && timeout_valid && tv.tv_sec == 0 && tv.tv_usec == 0)
{
tty_timeout();
}
timeout_valid = 0;
/* Read from keyboard */
if (FD_ISSET(termfd, &in_set))
{
int len;
if ( (len=read(termfd, inbuf, sizeof(inbuf))) <= 0)
{
perror("read tty");
break;
}
tty_process_terminal(inbuf, len);
}
if (FD_ISSET(sockfd, &in_set))
if (found_read() == -1)
break;
}
write(termfd, "\n", 1);
return 0;
}
static void set_exit_char(char *string)
{
int newchar = 0;
if (string[0] == '^')
{
newchar = toupper(string[1]) - '@';
}
else
newchar = strtol(string, NULL, 0); // Just a number
// Make sure it's resaonable
if (newchar > 0 && newchar < 256)
exit_char = newchar;
}
static void usage(char *prog, FILE * f)
{
fprintf(f, "\nUsage: %s [OPTIONS] node\n\n", prog);
fprintf(f, "\nOptions:\n");
fprintf(f, " -? -h display this help message\n");
fprintf(f, " -V show version number\n");
fprintf(f, " -e <char> set exit char\n");
fprintf(f, " -T <secs> connect timeout (default 60 seconds)\n");
fprintf(f, " -d <mask> debug information\n");
fprintf(f, "\n");
}
int main(int argc, char *argv[])
{
int opt;
int connect_timeout = 60;
// Deal with command-line arguments.
opterr = 0;
optind = 0;
while ((opt = getopt(argc, argv, "?Vhd:te:T:")) != EOF)
{
switch (opt)
{
case 'h':
usage(argv[0], stdout);
exit(0);
case '?':
usage(argv[0], stderr);
exit(0);
case 'V':
printf("\ndnlogin from dnprogs version %s\n\n", VERSION);
exit(1);
break;
case 'e':
set_exit_char(optarg);
break;
case 'T':
connect_timeout = atoi(optarg);
break;
case 'd':
debug = atoi(optarg);
break;
}
}
if (optind >= argc)
{
usage(argv[0], stderr);
exit(2);
}
send_input = cterm_send_input;
send_oob = cterm_send_oob;
rahead_change = cterm_rahead_change;
if (found_setup_link(argv[optind], DNOBJECT_CTERM, cterm_process_network, connect_timeout) == 0)
{
if (tty_setup("/dev/fd/0", 1) == -1)
if (tty_setup("/proc/self/fd/0", 1)) {
perror("cannot connect to stdin\n");
}
mainloop();
tty_setup(NULL, 0);
}
else
{
return 2;
}
return 0;
}
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