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/* $OpenBSD: remote.c,v 1.16 2006/06/06 23:24:52 deraadt Exp $ */
/* $NetBSD: remote.c,v 1.5 1997/04/20 00:02:45 mellon Exp $ */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static const char copyright[] =
"@(#) Copyright (c) 1992, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)remote.c 8.1 (Berkeley) 6/6/93";
#endif
static const char rcsid[] = "$OpenBSD: remote.c,v 1.16 2006/06/06 23:24:52 deraadt Exp $";
#endif /* not lint */
#include <stdio.h>
#include <stdlib.h>
#include "pathnames.h"
#include "tip.h"
/*
* Attributes to be gleened from remote host description
* data base.
*/
static char **caps[] = {
&AT, &DV, &CM, &CU, &EL, &IE, &OE, &PN, &PR, &DI,
&ES, &EX, &FO, &RC, &RE, &PA
};
static char *capstrings[] = {
"at", "dv", "cm", "cu", "el", "ie", "oe", "pn", "pr",
"di", "es", "ex", "fo", "rc", "re", "pa", 0
};
static char *db_array[3] = { _PATH_REMOTE, 0, 0 };
#define cgetflag(f) (cgetcap(bp, f, ':') != NULL)
static void getremcap(char *);
static void
getremcap(char *host)
{
char **p, ***q, *bp, *rempath;
int stat;
rempath = getenv("REMOTE");
if (rempath != NULL) {
if (*rempath != '/')
/* we have an entry */
cgetset(rempath);
else { /* we have a path */
db_array[1] = rempath;
db_array[2] = _PATH_REMOTE;
}
}
if ((stat = cgetent(&bp, db_array, host)) < 0) {
if ((DV != NULL) ||
(host[0] == '/' && access(DV = host, R_OK | W_OK) == 0)) {
CU = DV;
HO = host;
HW = 1;
DU = 0;
if (!BR)
BR = DEFBR;
FS = DEFFS;
return;
}
switch (stat) {
case -1:
fprintf(stderr, "%s: unknown host %s\n", __progname,
host);
break;
case -2:
fprintf(stderr,
"%s: can't open host description file\n",
__progname);
break;
case -3:
fprintf(stderr,
"%s: possible reference loop in host description file\n", __progname);
break;
}
exit(3);
}
for (p = capstrings, q = caps; *p != NULL; p++, q++)
if (**q == NULL)
cgetstr(bp, *p, *q);
if (!BR && (cgetnum(bp, "br", &BR) == -1))
BR = DEFBR;
if (!LD && (cgetnum(bp, "ld", &LD) == -1))
LD = TTYDISC;
if (cgetnum(bp, "fs", &FS) == -1)
FS = DEFFS;
if (DU < 0)
DU = 0;
else
DU = cgetflag("du");
if (DV == NOSTR) {
fprintf(stderr, "%s: missing device spec\n", host);
exit(3);
}
if (DU && CU == NOSTR)
CU = DV;
if (DU && PN == NOSTR) {
fprintf(stderr, "%s: missing phone number\n", host);
exit(3);
}
if (DU && AT == NOSTR) {
fprintf(stderr, "%s: missing acu type\n", host);
exit(3);
}
HD = cgetflag("hd");
/*
* This effectively eliminates the "hw" attribute
* from the description file
*/
if (!HW)
HW = (CU == NOSTR) || (DU && equal(DV, CU));
HO = host;
/*
* see if uppercase mode should be turned on initially
*/
if (cgetflag("ra"))
setboolean(value(RAISE), 1);
if (cgetflag("ec"))
setboolean(value(ECHOCHECK), 1);
if (cgetflag("be"))
setboolean(value(BEAUTIFY), 1);
if (cgetflag("nb"))
setboolean(value(BEAUTIFY), 0);
if (cgetflag("sc"))
setboolean(value(SCRIPT), 1);
if (cgetflag("tb"))
setboolean(value(TABEXPAND), 1);
if (cgetflag("vb"))
setboolean(value(VERBOSE), 1);
if (cgetflag("nv"))
setboolean(value(VERBOSE), 0);
if (cgetflag("ta"))
setboolean(value(TAND), 1);
if (cgetflag("nt"))
setboolean(value(TAND), 0);
if (cgetflag("rw"))
setboolean(value(RAWFTP), 1);
if (cgetflag("hd"))
setboolean(value(HALFDUPLEX), 1);
if (cgetflag("dc"))
setboolean(value(DC), 1);
if (cgetflag("hf"))
setboolean(value(HARDWAREFLOW), 1);
if (RE == NOSTR)
RE = (char *)"tip.record";
if (EX == NOSTR)
EX = (char *)"\t\n\b\f";
if (ES != NOSTR)
vstring("es", ES);
if (FO != NOSTR)
vstring("fo", FO);
if (PR != NOSTR)
vstring("pr", PR);
if (RC != NOSTR)
vstring("rc", RC);
if (cgetnum(bp, "dl", &DL) == -1)
DL = 0;
if (cgetnum(bp, "cl", &CL) == -1)
CL = 0;
if (cgetnum(bp, "et", &ET) == -1)
ET = 10;
}
char *
getremote(char *host)
{
char *cp;
static char *next;
static int lookedup = 0;
if (!lookedup) {
if (host == NOSTR && (host = getenv("HOST")) == NOSTR) {
fprintf(stderr, "%s: no host specified\n", __progname);
exit(3);
}
getremcap(host);
next = DV;
lookedup++;
}
/*
* We return a new device each time we're called (to allow
* a rotary action to be simulated)
*/
if (next == NOSTR)
return (NOSTR);
if ((cp = strchr(next, ',')) == NULL) {
DV = next;
next = NOSTR;
} else {
*cp++ = '\0';
DV = next;
next = cp;
}
return (DV);
}
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