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/******************************************************************
** File: microcom.c
** Description: the main file for microcom project
**
** Copyright (C)1999 Anca and Lucian Jurubita <ljurubita@hotmail.com>.
** All rights reserved.
****************************************************************************
** 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 (at your option) 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 at www.gnu.org
****************************************************************************
** Rev. 1.0 - Feb. 2000
** Rev. 1.01 - March 2000
** Rev. 1.02 - June 2000
****************************************************************************/
#define _GNU_SOURCE
#include "microcom.h"
#include <unistd.h>
#include <getopt.h>
#include <sys/socket.h>
#include <string.h>
#include <stdint.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "config.h"
static struct termios sots; /* old stdout/in termios settings to restore */
struct ios_ops *ios;
int debug;
void init_terminal(void)
{
struct termios sts;
memcpy(&sts, &sots, sizeof (sots)); /* to be used upon exit */
/* again, some arbitrary things */
sts.c_iflag &= ~(IGNCR | INLCR | ICRNL);
sts.c_iflag |= IGNBRK;
sts.c_lflag &= ~ISIG;
sts.c_cc[VMIN] = 1;
sts.c_cc[VTIME] = 0;
sts.c_lflag &= ~ICANON;
/* no local echo: allow the other end to do the echoing */
sts.c_lflag &= ~(ECHO | ECHOCTL | ECHONL);
tcsetattr(STDIN_FILENO, TCSANOW, &sts);
}
void restore_terminal(void)
{
tcsetattr(STDIN_FILENO, TCSANOW, &sots);
}
void microcom_exit(int signal)
{
printf("exiting\n");
ios->exit(ios);
tcsetattr(STDIN_FILENO, TCSANOW, &sots);
exit(0);
}
/********************************************************************
Main functions
********************************************************************
static void help_usage(int exitcode, char *error, char *addl)
help with running the program
- exitcode - to be returned when the program is ended
- error - error string to be printed
- addl - another error string to be printed
static void cleanup_termios(int signal)
signal handler to restore terminal set befor exit
int main(int argc, char *argv[]) -
main program function
********************************************************************/
void main_usage(int exitcode, char *str, char *dev)
{
fprintf(stderr, "Usage: microcom [options]\n"
" [options] include:\n"
" -p, --port=<devfile> use the specified serial port device (%s);\n"
" -s, --speed=<speed> use specified baudrate (%d)\n"
" -t, --telnet=<host:port> work in telnet (rfc2217) mode\n"
" -c, --can=<interface:rx_id:tx_id> work in CAN mode\n"
" default: (%s:%x:%x)\n"
" -f, --force ignore existing lock file\n"
" -d, --debug output debugging info\n"
" -l, --logfile=<logfile> log output to <logfile>\n"
" -o, --listenonly Do not modify local terminal, do not send input\n"
" from stdin\n"
" -a, --answerback=<str> specify the answerback string sent as response to\n"
" an ENQ (ASCII 0x05) Character\n"
" -v, --version print version string\n"
" -h, --help This help\n",
DEFAULT_DEVICE, DEFAULT_BAUDRATE,
DEFAULT_CAN_INTERFACE, DEFAULT_CAN_ID, DEFAULT_CAN_ID);
fprintf(stderr, "Exitcode %d - %s %s\n\n", exitcode, str, dev);
exit(exitcode);
}
int opt_force = 0;
unsigned long current_speed = DEFAULT_BAUDRATE;
int current_flow = FLOW_NONE;
int listenonly = 0;
int main(int argc, char *argv[])
{
struct sigaction sact; /* used to initialize the signal handler */
int opt, ret;
char *hostport = NULL;
int telnet = 0, can = 0;
char *interfaceid = NULL;
char *device = DEFAULT_DEVICE;
char *logfile = NULL;
struct option long_options[] = {
{ "help", no_argument, NULL, 'h' },
{ "port", required_argument, NULL, 'p'},
{ "speed", required_argument, NULL, 's'},
{ "telnet", required_argument, NULL, 't'},
{ "can", required_argument, NULL, 'c'},
{ "debug", no_argument, NULL, 'd' },
{ "force", no_argument, NULL, 'f' },
{ "logfile", required_argument, NULL, 'l'},
{ "listenonly", no_argument, NULL, 'o'},
{ "answerback", required_argument, NULL, 'a'},
{ "version", no_argument, NULL, 'v' },
{ },
};
while ((opt = getopt_long(argc, argv, "hp:s:t:c:dfl:oi:a:v", long_options, NULL)) != -1) {
switch (opt) {
case '?':
main_usage(1, "", "");
break;
case 'h':
main_usage(0, "", "");
break;
case 'v':
printf("%s\n", PACKAGE_VERSION);
exit(EXIT_SUCCESS);
break;
case 'p':
device = optarg;
break;
case 's':
current_speed = strtoul(optarg, NULL, 0);
break;
case 't':
telnet = 1;
hostport = optarg;
break;
case 'c':
can = 1;
interfaceid = optarg;
break;
case 'f':
opt_force = 1;
break;
case 'd':
debug = 1;
break;
case 'l':
logfile = optarg;
break;
case 'o':
listenonly = 1;
break;
case 'a':
answerback = optarg;
break;
}
}
if (answerback) {
ret = asprintf(&answerback, "%s\n", answerback);
if (ret < 0)
exit (1);
}
commands_init();
commands_fsl_imx_init();
if (telnet && can)
main_usage(1, "", "");
if (telnet)
ios = telnet_init(hostport);
else if (can) {
#ifdef USE_CAN
ios = can_init(interfaceid);
#else
fprintf(stderr, "CAN mode not supported\n");
exit(EXIT_FAILURE);
#endif
} else
ios = serial_init(device);
if (!ios)
exit(1);
if (logfile) {
ret = logfile_open(logfile);
if (ret < 0)
exit(1);
}
ret = ios->set_speed(ios, current_speed);
if (ret)
goto cleanup_ios;
current_flow = FLOW_NONE;
ios->set_flow(ios, current_flow);
if (!listenonly) {
printf("Escape character: Ctrl-\\\n");
printf("Type the escape character to get to the prompt.\n");
/* Now deal with the local terminal side */
tcgetattr(STDIN_FILENO, &sots);
init_terminal();
/* set the signal handler to restore the old
* termios handler */
sact.sa_handler = µcom_exit;
sigaction(SIGHUP, &sact, NULL);
sigaction(SIGINT, &sact, NULL);
sigaction(SIGPIPE, &sact, NULL);
sigaction(SIGTERM, &sact, NULL);
sigaction(SIGQUIT, &sact, NULL);
}
/* run the main program loop */
ret = mux_loop(ios);
if (!listenonly)
tcsetattr(STDIN_FILENO, TCSANOW, &sots);
cleanup_ios:
ios->exit(ios);
exit(ret ? 1 : 0);
}
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