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