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cu.c
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cu.c
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/* cu.c
Call up a remote system.
Copyright (C) 1992, 1993, 1994, 1995, 2002 Ian Lance Taylor
This file is part of the Taylor UUCP package.
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.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
The author of the program may be contacted at [email protected].
*/
#include "uucp.h"
#if USE_RCS_ID
const char cu_rcsid[] = "$Id$";
#endif
#include "cu.h"
#include "uudefs.h"
#include "uuconf.h"
#include "conn.h"
#include "prot.h"
#include "system.h"
#include "sysdep.h"
#include "getopt.h"
#include <stdio.h>
#include <ctype.h>
#include <errno.h>
/* Here are the user settable variables. The user is permitted to
change these while running the program, using ~s. */
/* The escape character used to introduce a special command. The
escape character is the first character of this string. */
const char *zCuvar_escape = "~";
/* Whether to delay for a second before printing the host name after
seeing an escape character. */
boolean fCuvar_delay = TRUE;
/* The input characters which finish a line. The escape character is
only recognized following one of these characters. The default is
carriage return, ^U, ^C, ^O, ^D, ^S, ^Q, ^R, which I got from the
Ultrix /etc/remote file. */
const char *zCuvar_eol = "\r\025\003\017\004\023\021\022";
/* Whether to transfer binary data (nonprintable characters other than
newline and tab) when sending a file. If this is FALSE, then
newline is changed to carriage return. */
boolean fCuvar_binary = FALSE;
/* A prefix string to use before sending a binary character from a
file; this is only used if fCuvar_binary is TRUE. The default is
^V. */
const char *zCuvar_binary_prefix = "\026";
/* Whether to check for echoes of characters sent when sending a file.
This is ignored if fCuvar_binary is TRUE. */
boolean fCuvar_echocheck = FALSE;
/* A character to look for after each newline is sent when sending a
file. The character is the first character in this string, except
that a '\0' means that no echo check is done. */
const char *zCuvar_echonl = "\r";
/* The timeout to use when looking for an character. */
int cCuvar_timeout = 30;
/* The character to use to kill a line if an echo check fails. The
first character in this string is sent. The default is ^U. */
const char *zCuvar_kill = "\025";
/* The number of times to try resending a line if the echo check keeps
failing. */
int cCuvar_resend = 10;
/* The string to send at the end of a file sent with ~>. The default
is ^D. */
const char *zCuvar_eofwrite = "\004";
/* The string to look for to finish a file received with ~<. For tip
this is a collection of single characters, but I don't want to do
that because it means that there are characters which cannot be
received. The default is a guess at a typical shell prompt. */
const char *zCuvar_eofread = "$";
/* Whether to provide verbose information when sending or receiving a
file. */
boolean fCuvar_verbose = TRUE;
/* The table used to give a value to a variable, and to print all the
variable values. */
static const struct uuconf_cmdtab asCuvars[] =
{
{ "escape", UUCONF_CMDTABTYPE_STRING, (pointer) &zCuvar_escape, NULL },
{ "delay", UUCONF_CMDTABTYPE_BOOLEAN, (pointer) &fCuvar_delay, NULL },
{ "eol", UUCONF_CMDTABTYPE_STRING, (pointer) &zCuvar_eol, NULL },
{ "binary", UUCONF_CMDTABTYPE_BOOLEAN, (pointer) &fCuvar_binary, NULL },
{ "binary-prefix", UUCONF_CMDTABTYPE_STRING,
(pointer) &zCuvar_binary_prefix, NULL },
{ "echocheck", UUCONF_CMDTABTYPE_BOOLEAN,
(pointer) &fCuvar_echocheck, NULL },
{ "echonl", UUCONF_CMDTABTYPE_STRING, (pointer) &zCuvar_echonl, NULL },
{ "timeout", UUCONF_CMDTABTYPE_INT, (pointer) &cCuvar_timeout, NULL },
{ "kill", UUCONF_CMDTABTYPE_STRING, (pointer) &zCuvar_kill, NULL },
{ "resend", UUCONF_CMDTABTYPE_INT, (pointer) &cCuvar_resend, NULL },
{ "eofwrite", UUCONF_CMDTABTYPE_STRING, (pointer) &zCuvar_eofwrite, NULL },
{ "eofread", UUCONF_CMDTABTYPE_STRING, (pointer) &zCuvar_eofread, NULL },
{ "verbose", UUCONF_CMDTABTYPE_BOOLEAN, (pointer) &fCuvar_verbose, NULL },
{ NULL, 0, NULL, NULL}
};
/* The string printed at the initial connect. */
#if ANSI_C
#define ZCONNMSG "\aConnected."
#else
#define ZCONNMSG "Connected."
#endif
/* The string printed when disconnecting. */
#if ANSI_C
#define ZDISMSG "\aDisconnected."
#else
#define ZDISMSG "Disconnected."
#endif
/* Local variables. */
/* The string we print when the user is once again connected to the
port after transferring a file or taking some other action. */
static const char abCuconnected[]
#if ANSI_C
= "\a[connected]";
#else
= "[connected]";
#endif
/* Global uuconf pointer. */
static pointer pCuuuconf;
/* Connection. */
static struct sconnection *qCuconn;
/* Whether to close the connection. */
static boolean fCuclose_conn;
/* Dialer used to dial out. */
static struct uuconf_dialer *qCudialer;
/* Whether we need to restore the terminal. */
static boolean fCurestore_terminal;
/* Whether we are doing local echoing. */
static boolean fCulocalecho;
/* Whether we need to call fsysdep_cu_finish. */
static boolean fCustarted;
/* Whether ZCONNMSG has been printed yet. */
static boolean fCuconnprinted = FALSE;
/* A structure used to pass information to icuport_lock. */
struct sconninfo
{
boolean fmatched;
boolean flocked;
boolean fdirect;
struct sconnection *qconn;
const char *zline;
};
/* Local functions. */
static void ucuusage P((void));
static void ucuhelp P((void));
static void ucuabort P((void));
static void uculog_start P((void));
static void uculog_end P((void));
static int icuport_lock P((struct uuconf_port *qport, pointer pinfo));
static boolean fcudo_cmd P((pointer puuconf, struct sconnection *qconn,
int bcmd));
static boolean fcuset_var P((pointer puuconf, char *zline));
static int icuunrecogvar P((pointer puuconf, int argc, char **argv,
pointer pvar, pointer pinfo));
static int icuunrecogfn P((pointer puuconf, int argc, char **argv,
pointer pvar, pointer pinfo));
static void uculist_vars P((void));
static void uculist_fns P((const char *zescape));
static boolean fcudo_subcmd P((pointer puuconf, struct sconnection *qconn,
char *zline));
static boolean fcusend_buf P((struct sconnection *qconn, const char *zbuf,
size_t cbuf));
#define ucuputs(zline) \
do { if (! fsysdep_terminal_puts (zline)) ucuabort (); } while (0)
/* Long getopt options. */
static const struct option asCulongopts[] =
{
{ "phone", required_argument, NULL, 'c' },
{ "escape", required_argument, NULL, 'E' },
{ "parity", required_argument, NULL, 2 },
{ "halfduplex", no_argument, NULL, 'h' },
{ "prompt", no_argument, NULL, 'n' },
{ "line", required_argument, NULL, 'l' },
{ "port", required_argument, NULL, 'p' },
{ "speed", required_argument, NULL, 's' },
{ "baud", required_argument, NULL, 's' },
{ "mapcr", no_argument, NULL, 't' },
{ "nostop", no_argument, NULL, 3 },
{ "system", required_argument, NULL, 'z' },
{ "config", required_argument, NULL, 'I' },
{ "debug", required_argument, NULL, 'x' },
{ "version", no_argument, NULL, 'v' },
{ "help", no_argument, NULL, 1 },
{ NULL, 0, NULL, 0 }
};
int
main (int argc, char **argv)
{
/* -c: phone number. */
char *zphone = NULL;
/* -e: even parity. */
boolean feven = FALSE;
/* -l: line. */
char *zline = NULL;
/* -n: prompt for phone number. */
boolean fprompt = FALSE;
/* -o: odd parity. */
boolean fodd = FALSE;
/* -p: port name. */
const char *zport = NULL;
/* -s: speed. */
long ibaud = 0L;
/* -z: system. */
const char *zsystem = NULL;
/* --nostop: turn off XON/XOFF. */
enum txonxoffsetting txonxoff = XONXOFF_ON;
/* -I: configuration file name. */
const char *zconfig = NULL;
int iopt;
pointer puuconf;
int iuuconf;
const char *zlocalname;
int i;
struct uuconf_system ssys;
const struct uuconf_system *qsys = NULL;
boolean flooped;
struct uuconf_port sport;
struct sconnection sconn;
struct sconninfo sinfo;
long ihighbaud;
struct uuconf_dialer sdialer;
struct uuconf_dialer *qdialer;
char bcmd;
zProgram = argv[0];
/* We want to accept -# as a speed. It's easiest to look through
the arguments, replace -# with -s#, and let getopt handle it. */
for (i = 1; i < argc; i++)
{
if (argv[i][0] == '-'
&& isdigit (BUCHAR (argv[i][1])))
{
size_t clen;
char *z;
clen = strlen (argv[i]);
z = zbufalc (clen + 2);
z[0] = '-';
z[1] = 's';
memcpy (z + 2, argv[i] + 1, clen);
argv[i] = z;
}
}
while ((iopt = getopt_long (argc, argv, "a:c:deE:hnI:l:op:s:tvx:z:",
asCulongopts, (int *) NULL)) != EOF)
{
switch (iopt)
{
case 'c':
/* Phone number. */
zphone = optarg;
break;
case 'd':
/* Set debugging level to maximum. */
#if DEBUG > 1
iDebug = DEBUG_MAX;
#endif
break;
case 'e':
/* Even parity. */
feven = TRUE;
break;
case 'E':
/* Escape character. */
zCuvar_escape = optarg;
break;
case 'h':
/* Local echo. */
fCulocalecho = TRUE;
break;
case 'n':
/* Prompt for phone number. */
fprompt = TRUE;
break;
case 'l':
/* Line name. */
zline = optarg;
break;
case 'o':
/* Odd parity. */
fodd = TRUE;
break;
case 'p':
case 'a':
/* Port name (-a is for compatibility). */
zport = optarg;
break;
case 's':
/* Speed. */
ibaud = strtol (optarg, (char **) NULL, 10);
break;
case 'z':
/* System name. */
zsystem = optarg;
break;
case 'I':
/* Configuration file name. */
if (fsysdep_other_config (optarg))
zconfig = optarg;
break;
case 'x':
#if DEBUG > 1
/* Set debugging level. */
iDebug |= idebug_parse (optarg);
#endif
break;
case 'v':
/* Print version and exit. */
printf ("cu (Taylor UUCP) %s\n", VERSION);
printf ("Copyright (C) 1991, 92, 93, 94, 1995, 2002 Ian Lance Taylor\n");
printf ("This program is free software; you may redistribute it under the terms of\n");
printf ("the GNU General Public LIcense. This program has ABSOLUTELY NO WARRANTY.\n");
exit (EXIT_SUCCESS);
/*NOTREACHED*/
case 2:
/* --parity. */
if (strncmp (optarg, "even", strlen (optarg)) == 0)
feven = TRUE;
else if (strncmp (optarg, "odd", strlen (optarg)) == 0)
fodd = TRUE;
else if (strncmp (optarg, "none", strlen (optarg)) == 0)
{
feven = TRUE;
fodd = TRUE;
}
else
{
fprintf (stderr, "%s: --parity requires even, odd or none\n",
zProgram);
ucuusage ();
}
break;
case 3:
/* --nostop. */
txonxoff = XONXOFF_OFF;
break;
case 1:
/* --help. */
ucuhelp ();
exit (EXIT_SUCCESS);
/*NOTREACHED*/
case 0:
/* Long option found and flag set. */
break;
default:
ucuusage ();
/*NOTREACHED*/
}
}
/* There can be one more argument, which is either a system name, a
phone number, or "dir". We decide which it is based on the first
character. To call a UUCP system whose name begins with a digit,
or one which is named "dir", you must use -z. */
if (optind != argc)
{
if (optind != argc - 1
|| zsystem != NULL
|| zphone != NULL)
{
fprintf (stderr, "%s: too many arguments\n", zProgram);
ucuusage ();
}
if (strcmp (argv[optind], "dir") != 0)
{
if (isdigit (BUCHAR (argv[optind][0])))
zphone = argv[optind];
else
zsystem = argv[optind];
}
}
/* If the user doesn't give a system, port, line or speed, then
there's no basis on which to select a port. */
if (zsystem == NULL
&& zport == NULL
&& zline == NULL
&& ibaud == 0L)
{
fprintf (stderr, "%s: must specify system, line, port or speed\n",
zProgram);
ucuusage ();
}
if (fprompt)
{
size_t cphone;
printf ("Phone number: ");
(void) fflush (stdout);
zphone = NULL;
cphone = 0;
if (getline (&zphone, &cphone, stdin) <= 0
|| *zphone == '\0')
{
fprintf (stderr, "%s: no phone number entered\n", zProgram);
exit (EXIT_FAILURE);
}
}
iuuconf = uuconf_init (&puuconf, "cu", zconfig);
if (iuuconf != UUCONF_SUCCESS)
ulog_uuconf (LOG_FATAL, puuconf, iuuconf);
pCuuuconf = puuconf;
#if DEBUG > 1
{
const char *zdebug;
iuuconf = uuconf_debuglevel (puuconf, &zdebug);
if (iuuconf != UUCONF_SUCCESS)
ulog_uuconf (LOG_FATAL, puuconf, iuuconf);
if (zdebug != NULL)
iDebug |= idebug_parse (zdebug);
}
#endif
usysdep_initialize (puuconf, INIT_NOCHDIR | INIT_SUID);
iuuconf = uuconf_localname (puuconf, &zlocalname);
if (iuuconf == UUCONF_NOT_FOUND)
{
zlocalname = zsysdep_localname ();
if (zlocalname == NULL)
exit (EXIT_FAILURE);
}
else if (iuuconf != UUCONF_SUCCESS)
ulog_uuconf (LOG_FATAL, puuconf, iuuconf);
ulog_fatal_fn (ucuabort);
pfLstart = uculog_start;
pfLend = uculog_end;
#ifdef SIGINT
usysdep_signal (SIGINT);
#endif
#ifdef SIGHUP
usysdep_signal (SIGHUP);
#endif
#ifdef SIGQUIT
usysdep_signal (SIGQUIT);
#endif
#ifdef SIGTERM
usysdep_signal (SIGTERM);
#endif
#ifdef SIGPIPE
usysdep_signal (SIGPIPE);
#endif
if (zsystem != NULL)
{
iuuconf = uuconf_system_info (puuconf, zsystem, &ssys);
if (iuuconf != UUCONF_SUCCESS)
{
if (iuuconf != UUCONF_NOT_FOUND)
ulog_uuconf (LOG_FATAL, puuconf, iuuconf);
ulog (LOG_FATAL, "%s: System not found", zsystem);
}
qsys = &ssys;
}
/* This loop is used if a system is specified. It loops over the
various alternates until it finds one for which the dial
succeeds. This is an ugly spaghetti construction, and it should
be broken up into different functions someday. */
flooped = FALSE;
while (TRUE)
{
enum tparitysetting tparity;
enum tstripsetting tstrip;
long iusebaud;
/* The uuconf_find_port function only selects directly on a port
name and a speed. To select based on the line name, we use a
function. If we can't find any defined port, and the user
specified a line name but did not specify a port name or a
system or a phone number, then we fake a direct port with
that line name (we don't fake a port if a system or phone
number were given because if we fake a port we have no way to
place a call; perhaps we should automatically look up a
particular dialer). This permits users to say cu -lttyd0
without having to put ttyd0 in the ports file, provided they
have read and write access to the port. */
sinfo.fmatched = FALSE;
sinfo.flocked = FALSE;
sinfo.fdirect = qsys == NULL && zphone == NULL;
sinfo.qconn = &sconn;
sinfo.zline = zline;
if (zport != NULL || zline != NULL || ibaud != 0L)
{
iuuconf = uuconf_find_port (puuconf, zport, ibaud, 0L,
icuport_lock, (pointer) &sinfo,
&sport);
if (iuuconf != UUCONF_SUCCESS)
{
if (iuuconf != UUCONF_NOT_FOUND)
{
if (sinfo.flocked)
{
(void) fconn_unlock (&sconn);
uconn_free (&sconn);
}
ulog_uuconf (LOG_FATAL, puuconf, iuuconf);
}
if (zline == NULL
|| zport != NULL
|| zphone != NULL
|| qsys != NULL)
{
if (sinfo.fmatched)
ulog (LOG_FATAL, "All matching ports in use");
else
ulog (LOG_FATAL, "No matching ports");
}
sport.uuconf_zname = zline;
sport.uuconf_ttype = UUCONF_PORTTYPE_DIRECT;
sport.uuconf_zprotocols = NULL;
sport.uuconf_qproto_params = NULL;
sport.uuconf_ireliable = 0;
sport.uuconf_zlockname = NULL;
sport.uuconf_palloc = NULL;
sport.uuconf_u.uuconf_sdirect.uuconf_zdevice = NULL;
sport.uuconf_u.uuconf_sdirect.uuconf_ibaud = ibaud;
if (! fconn_init (&sport, &sconn, UUCONF_PORTTYPE_UNKNOWN))
ucuabort ();
if (! fconn_lock (&sconn, FALSE, TRUE))
ulog (LOG_FATAL, "%s: Line in use", zline);
qCuconn = &sconn;
/* Check user access after locking the port, because on
some systems shared lines affect the ownership and
permissions. In such a case ``Line in use'' is more
clear than ``Permission denied.'' */
if (! fsysdep_port_access (&sport))
ulog (LOG_FATAL, "%s: Permission denied", zline);
}
iusebaud = ibaud;
ihighbaud = 0L;
}
else
{
for (; qsys != NULL; qsys = qsys->uuconf_qalternate)
{
if (! qsys->uuconf_fcall)
continue;
if (qsys->uuconf_qport != NULL)
{
if (fconn_init (qsys->uuconf_qport, &sconn,
UUCONF_PORTTYPE_UNKNOWN))
{
if (fconn_lock (&sconn, FALSE, FALSE))
{
qCuconn = &sconn;
break;
}
uconn_free (&sconn);
}
}
else
{
sinfo.fmatched = FALSE;
sinfo.flocked = FALSE;
sinfo.qconn = &sconn;
iuuconf = uuconf_find_port (puuconf, qsys->uuconf_zport,
qsys->uuconf_ibaud,
qsys->uuconf_ihighbaud,
icuport_lock,
(pointer) &sinfo,
&sport);
if (iuuconf == UUCONF_SUCCESS)
break;
if (iuuconf != UUCONF_NOT_FOUND)
{
if (sinfo.flocked)
{
(void) fconn_unlock (&sconn);
uconn_free (&sconn);
}
ulog_uuconf (LOG_FATAL, puuconf, iuuconf);
}
}
}
if (qsys == NULL)
{
const char *zrem;
if (flooped)
zrem = "remaining ";
else
zrem = "";
if (sinfo.fmatched)
ulog (LOG_FATAL, "%s: All %smatching ports in use",
zsystem, zrem);
else
ulog (LOG_FATAL, "%s: No %smatching ports", zsystem, zrem);
}
iusebaud = qsys->uuconf_ibaud;
ihighbaud = qsys->uuconf_ihighbaud;
}
/* Here we have locked a connection to use. */
if (! fconn_open (&sconn, iusebaud, ihighbaud, FALSE, sinfo.fdirect))
ucuabort ();
fCuclose_conn = TRUE;
if (FGOT_SIGNAL ())
ucuabort ();
/* Set up the connection. */
if (fodd && feven)
{
tparity = PARITYSETTING_NONE;
tstrip = STRIPSETTING_SEVENBITS;
}
else if (fodd)
{
tparity = PARITYSETTING_ODD;
tstrip = STRIPSETTING_SEVENBITS;
}
else if (feven)
{
tparity = PARITYSETTING_EVEN;
tstrip = STRIPSETTING_SEVENBITS;
}
else
{
tparity = PARITYSETTING_DEFAULT;
tstrip = STRIPSETTING_DEFAULT;
}
if (! fconn_set (&sconn, tparity, tstrip, txonxoff))
ucuabort ();
if (qsys != NULL)
zphone = qsys->uuconf_zphone;
if (qsys != NULL || zphone != NULL)
{
enum tdialerfound tdialer;
if (! fconn_dial (&sconn, puuconf, qsys, zphone, &sdialer,
&tdialer))
{
if (zport != NULL
|| zline != NULL
|| ibaud != 0L
|| qsys == NULL)
ucuabort ();
qsys = qsys->uuconf_qalternate;
if (qsys == NULL)
ulog (LOG_FATAL, "%s: No remaining alternates", zsystem);
fCuclose_conn = FALSE;
(void) fconn_close (&sconn, pCuuuconf, qCudialer, FALSE);
qCuconn = NULL;
(void) fconn_unlock (&sconn);
uconn_free (&sconn);
/* Loop around and try another alternate. */
flooped = TRUE;
continue;
}
if (tdialer == DIALERFOUND_FALSE)
qdialer = NULL;
else
qdialer = &sdialer;
}
else
{
/* If no system or phone number was specified, we connect
directly to the modem. We only permit this if the user
has access to the port, since it permits various
shenanigans such as reprogramming the automatic
callbacks. */
if (! fsysdep_port_access (sconn.qport))
ulog (LOG_FATAL, "Access to port denied");
qdialer = NULL;
if (! fconn_carrier (&sconn, FALSE))
ulog (LOG_FATAL, "Can't turn off carrier");
}
break;
}
qCudialer = qdialer;
if (FGOT_SIGNAL ())
ucuabort ();
/* Here we have connected, and can start the main cu protocol. The
program spends most of its time in system dependent code, and
only comes out when a special command is received from the
terminal. */
printf ("%s\n", ZCONNMSG);
fCuconnprinted = TRUE;
if (! fsysdep_terminal_raw (fCulocalecho))
ucuabort ();
fCurestore_terminal = TRUE;
if (! fsysdep_cu_init (&sconn))
ucuabort ();
fCustarted = TRUE;
while (fsysdep_cu (&sconn, &bcmd, zlocalname))
if (! fcudo_cmd (puuconf, &sconn, bcmd))
break;
fCustarted = FALSE;
if (! fsysdep_cu_finish ())
ucuabort ();
fCurestore_terminal = FALSE;
(void) fsysdep_terminal_restore ();
(void) fconn_close (&sconn, puuconf, qdialer, TRUE);
(void) fconn_unlock (&sconn);
uconn_free (&sconn);
if (fCuconnprinted)
printf ("\n%s\n", ZDISMSG);
ulog_close ();
usysdep_exit (TRUE);
/* Avoid errors about not returning a value. */
return 0;
}
/* Print a usage message and die. */
static void
ucuusage (void)
{
fprintf (stderr, "Usage: %s [options] [system or phone-number]\n",
zProgram);
fprintf (stderr, "Use %s --help for help\n", zProgram);
exit (EXIT_FAILURE);
}
/* Print a help message. */
static void
ucuhelp (void)
{
printf ("Taylor UUCP %s, copyright (C) 1991, 92, 93, 94, 1995, 2002 Ian Lance Taylor\n",
VERSION);
printf ("Usage: %s [options] [system or phone-number]\n", zProgram);
printf (" -a,-p,--port port: Use named port\n");
printf (" -l,--line line: Use named device (e.g. tty0)\n");
printf (" -s,--speed,--baud speed, -#: Use given speed\n");
printf (" -c,--phone phone: Phone number to call\n");
printf (" -z,--system system: System to call\n");
printf (" -e: Set even parity\n");
printf (" -o: Set odd parity\n");
printf (" --parity={odd,even}: Set parity\n");
printf (" -E,--escape char: Set escape character\n");
printf (" -h,--halfduplex: Echo locally\n");
printf (" --nostop: Turn off XON/XOFF handling\n");
printf (" -t,--mapcr: Map carriage return to carriage return/linefeed\n");
printf (" -n,--prompt: Prompt for phone number\n");
printf (" -d: Set maximum debugging level\n");
printf (" -x,--debug debug: Set debugging type\n");
#if HAVE_TAYLOR_CONFIG
printf (" -I,--config file: Set configuration file to use\n");
#endif /* HAVE_TAYLOR_CONFIG */
printf (" -v,--version: Print version and exit\n");
printf (" --help: Print help and exit\n");
printf ("Report bugs to [email protected]\n");
}
/* This function is called when a fatal error occurs. */
static void
ucuabort (void)
{
if (fCustarted)
{
fCustarted = FALSE;
(void) fsysdep_cu_finish ();
}
if (fCurestore_terminal)
{
fCurestore_terminal = FALSE;
(void) fsysdep_terminal_restore ();
}
if (qCuconn != NULL)
{
struct sconnection *qconn;
if (fCuclose_conn)
{
fCuclose_conn = FALSE;
(void) fconn_close (qCuconn, pCuuuconf, qCudialer, FALSE);
}
qconn = qCuconn;
qCuconn = NULL;
(void) fconn_unlock (qconn);
uconn_free (qconn);
}
ulog_close ();
if (fCuconnprinted)
printf ("\n%s\n", ZDISMSG);
usysdep_exit (FALSE);
}
/* This variable is just used to communicate between uculog_start and
uculog_end. */
static boolean fCulog_restore;
/* This function is called by ulog before it output anything. We use
it to restore the terminal, if necessary. ulog is only called for
errors or debugging in cu, so it's not too costly to do this. If
we didn't do it, then at least on Unix each line would leave the
cursor in the same column rather than wrapping back to the start,
since CRMOD will not be on. */
static void
uculog_start (void)
{
if (! fCurestore_terminal)
fCulog_restore = FALSE;
else
{
fCulog_restore = TRUE;
fCurestore_terminal = FALSE;
if (! fsysdep_terminal_restore ())
ucuabort ();
}
}
/* This function is called by ulog after everything is output. It
sets the terminal back, if necessary. */
static void
uculog_end (void)
{
if (fCulog_restore)
{
if (! fsysdep_terminal_raw (fCulocalecho))
ucuabort ();
fCurestore_terminal = TRUE;
}
}
/* Check to see if this port has the desired line, to handle the -l
option. If it does, or if no line was specified, set up a
connection and lock it. */
static int
icuport_lock (struct uuconf_port *qport, pointer pinfo)
{
struct sconninfo *q = (struct sconninfo *) pinfo;
if (q->zline != NULL
&& ! fsysdep_port_is_line (qport, q->zline))
return UUCONF_NOT_FOUND;
q->fmatched = TRUE;
if (! fconn_init (qport, q->qconn, UUCONF_PORTTYPE_UNKNOWN))
return UUCONF_NOT_FOUND;
else if (! fconn_lock (q->qconn, FALSE, q->fdirect))
{
uconn_free (q->qconn);
return UUCONF_NOT_FOUND;
}
else
{
qCuconn = q->qconn;
q->flocked = TRUE;
return UUCONF_SUCCESS;
}
}
/* Execute a cu escape command. Return TRUE if the connection should
continue, or FALSE if the connection should be terminated. */
static boolean
fcudo_cmd (pointer puuconf, struct sconnection *qconn, int bcmd)
{
char *zline;
char *z;
char abescape[5];
boolean fret;
size_t clen;
char abbuf[100];
/* Some commands take a string up to the next newline character. */
switch (bcmd)
{
default:
zline = NULL;
break;
case '!':
case '$':
case '|':
case '+':
case '%':
case 'c':
case '>':
case '<':
case 'p':
case 't':
case 's':
{
zline = zsysdep_terminal_line ((const char *) NULL);
if (zline == NULL)
ucuabort ();
zline[strcspn (zline, "\n")] = '\0';
}
break;
}
switch (bcmd)
{