520 lines
9.6 KiB
C
520 lines
9.6 KiB
C
/*
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* Copyright (c) 1983 The Regents of the University of California.
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* All rights reserved.
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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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* PATCHES MAGIC LEVEL PATCH THAT GOT US HERE
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* -------------------- ----- ----------------------
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* CURRENT PATCH LEVEL: 1 00150
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* -------------------- ----- ----------------------
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*
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* 22 Apr 93 Rodney W. Grimes support for 57600 and 115200 baud
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*
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*/
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#ifndef lint
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static char sccsid[] = "@(#)subr.c 5.10 (Berkeley) 2/26/91";
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#endif /* not lint */
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/*
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* Melbourne getty.
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*/
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#include <sys/param.h>
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#define USE_OLD_TTY
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#include <sgtty.h>
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#include <unistd.h>
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#include <string.h>
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#include "gettytab.h"
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extern struct sgttyb tmode;
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extern struct tchars tc;
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extern struct ltchars ltc;
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/*
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* Get a table entry.
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*/
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gettable(name, buf, area)
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char *name, *buf, *area;
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{
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register struct gettystrs *sp;
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register struct gettynums *np;
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register struct gettyflags *fp;
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register n;
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hopcount = 0; /* new lookup, start fresh */
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if (getent(buf, name) != 1)
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return;
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for (sp = gettystrs; sp->field; sp++)
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sp->value = getstr(sp->field, &area);
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for (np = gettynums; np->field; np++) {
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n = getnum(np->field);
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if (n == -1)
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np->set = 0;
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else {
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np->set = 1;
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np->value = n;
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}
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}
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for (fp = gettyflags; fp->field; fp++) {
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n = getflag(fp->field);
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if (n == -1)
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fp->set = 0;
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else {
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fp->set = 1;
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fp->value = n ^ fp->invrt;
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}
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}
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}
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gendefaults()
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{
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register struct gettystrs *sp;
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register struct gettynums *np;
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register struct gettyflags *fp;
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for (sp = gettystrs; sp->field; sp++)
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if (sp->value)
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sp->defalt = sp->value;
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for (np = gettynums; np->field; np++)
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if (np->set)
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np->defalt = np->value;
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for (fp = gettyflags; fp->field; fp++)
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if (fp->set)
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fp->defalt = fp->value;
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else
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fp->defalt = fp->invrt;
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}
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setdefaults()
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{
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register struct gettystrs *sp;
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register struct gettynums *np;
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register struct gettyflags *fp;
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for (sp = gettystrs; sp->field; sp++)
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if (!sp->value)
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sp->value = sp->defalt;
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for (np = gettynums; np->field; np++)
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if (!np->set)
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np->value = np->defalt;
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for (fp = gettyflags; fp->field; fp++)
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if (!fp->set)
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fp->value = fp->defalt;
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}
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static char **
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charnames[] = {
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&ER, &KL, &IN, &QU, &XN, &XF, &ET, &BK,
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&SU, &DS, &RP, &FL, &WE, &LN, 0
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};
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static char *
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charvars[] = {
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&tmode.sg_erase, &tmode.sg_kill, &tc.t_intrc,
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&tc.t_quitc, &tc.t_startc, &tc.t_stopc,
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&tc.t_eofc, &tc.t_brkc, <c.t_suspc,
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<c.t_dsuspc, <c.t_rprntc, <c.t_flushc,
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<c.t_werasc, <c.t_lnextc, 0
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};
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setchars()
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{
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register int i;
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register char *p;
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for (i = 0; charnames[i]; i++) {
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p = *charnames[i];
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if (p && *p)
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*charvars[i] = *p;
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else
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*charvars[i] = '\377';
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}
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}
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long
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setflags(n)
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{
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register long f;
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switch (n) {
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case 0:
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if (F0set)
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return(F0);
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break;
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case 1:
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if (F1set)
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return(F1);
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break;
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default:
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if (F2set)
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return(F2);
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break;
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}
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f = 0;
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if (AP)
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f |= ANYP;
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else if (OP)
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f |= ODDP;
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else if (EP)
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f |= EVENP;
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if (NP)
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f |= PASS8;
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if (UC)
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f |= LCASE;
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if (NL)
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f |= CRMOD;
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f |= delaybits();
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if (n == 1) { /* read mode flags */
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if (RW)
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f |= RAW;
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else
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f |= CBREAK;
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return (f);
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}
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if (!HT)
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f |= XTABS;
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if (n == 0)
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return (f);
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if (CB)
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f |= CRTBS;
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if (CE)
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f |= CRTERA;
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if (CK)
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f |= CRTKIL;
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if (PE)
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f |= PRTERA;
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if (EC)
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f |= ECHO;
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if (XC)
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f |= CTLECH;
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if (DX)
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f |= DECCTQ;
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return (f);
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}
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struct delayval {
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unsigned delay; /* delay in ms */
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int bits;
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};
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/*
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* below are random guesses, I can't be bothered checking
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*/
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struct delayval crdelay[] = {
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1, CR1,
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2, CR2,
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3, CR3,
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83, CR1,
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166, CR2,
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0, CR3,
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};
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struct delayval nldelay[] = {
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1, NL1, /* special, calculated */
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2, NL2,
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3, NL3,
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100, NL2,
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0, NL3,
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};
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struct delayval bsdelay[] = {
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1, BS1,
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0, 0,
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};
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struct delayval ffdelay[] = {
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1, FF1,
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1750, FF1,
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0, FF1,
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};
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struct delayval tbdelay[] = {
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1, TAB1,
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2, TAB2,
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3, XTABS, /* this is expand tabs */
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100, TAB1,
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0, TAB2,
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};
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delaybits()
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{
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register f;
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f = adelay(CD, crdelay);
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f |= adelay(ND, nldelay);
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f |= adelay(FD, ffdelay);
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f |= adelay(TD, tbdelay);
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f |= adelay(BD, bsdelay);
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return (f);
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}
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adelay(ms, dp)
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register ms;
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register struct delayval *dp;
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{
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if (ms == 0)
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return (0);
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while (dp->delay && ms > dp->delay)
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dp++;
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return (dp->bits);
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}
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char editedhost[MAXHOSTNAMELEN];
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edithost(pat)
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register char *pat;
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{
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register char *host = HN;
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register char *res = editedhost;
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if (!pat)
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pat = "";
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while (*pat) {
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switch (*pat) {
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case '#':
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if (*host)
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host++;
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break;
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case '@':
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if (*host)
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*res++ = *host++;
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break;
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default:
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*res++ = *pat;
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break;
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}
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if (res == &editedhost[sizeof editedhost - 1]) {
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*res = '\0';
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return;
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}
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pat++;
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}
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if (*host)
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strncpy(res, host, sizeof editedhost - (res - editedhost) - 1);
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else
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*res = '\0';
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editedhost[sizeof editedhost - 1] = '\0';
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}
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struct speedtab {
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int speed;
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int uxname;
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} speedtab[] = {
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50, B50,
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75, B75,
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110, B110,
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134, B134,
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150, B150,
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200, B200,
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300, B300,
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600, B600,
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1200, B1200,
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1800, B1800,
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2400, B2400,
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4800, B4800,
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9600, B9600,
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19200, EXTA,
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19, EXTA, /* for people who say 19.2K */
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38400, EXTB,
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38, EXTB,
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7200, EXTB, /* alternative */
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57600, B57600,
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115200, B115200,
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0
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};
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speed(val)
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{
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register struct speedtab *sp;
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if (val <= 15)
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return (val);
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for (sp = speedtab; sp->speed; sp++)
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if (sp->speed == val)
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return (sp->uxname);
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return (B300); /* default in impossible cases */
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}
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makeenv(env)
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char *env[];
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{
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static char termbuf[128] = "TERM=";
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register char *p, *q;
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register char **ep;
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char *index();
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ep = env;
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if (TT && *TT) {
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strcat(termbuf, TT);
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*ep++ = termbuf;
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}
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if (p = EV) {
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q = p;
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while (q = index(q, ',')) {
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*q++ = '\0';
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*ep++ = p;
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p = q;
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}
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if (*p)
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*ep++ = p;
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}
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*ep = (char *)0;
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}
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/*
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* This speed select mechanism is written for the Develcon DATASWITCH.
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* The Develcon sends a string of the form "B{speed}\n" at a predefined
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* baud rate. This string indicates the user's actual speed.
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* The routine below returns the terminal type mapped from derived speed.
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*/
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struct portselect {
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char *ps_baud;
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char *ps_type;
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} portspeeds[] = {
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{ "B110", "std.110" },
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{ "B134", "std.134" },
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{ "B150", "std.150" },
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{ "B300", "std.300" },
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{ "B600", "std.600" },
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{ "B1200", "std.1200" },
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{ "B2400", "std.2400" },
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{ "B4800", "std.4800" },
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{ "B9600", "std.9600" },
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{ "B19200", "std.19200" },
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{ 0 }
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};
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char *
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portselector()
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{
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char c, baud[20], *type = "default";
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register struct portselect *ps;
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int len;
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alarm(5*60);
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for (len = 0; len < sizeof (baud) - 1; len++) {
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if (read(STDIN_FILENO, &c, 1) <= 0)
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break;
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c &= 0177;
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if (c == '\n' || c == '\r')
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break;
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if (c == 'B')
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len = 0; /* in case of leading garbage */
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baud[len] = c;
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}
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baud[len] = '\0';
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for (ps = portspeeds; ps->ps_baud; ps++)
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if (strcmp(ps->ps_baud, baud) == 0) {
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type = ps->ps_type;
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break;
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}
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sleep(2); /* wait for connection to complete */
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return (type);
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}
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/*
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* This auto-baud speed select mechanism is written for the Micom 600
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* portselector. Selection is done by looking at how the character '\r'
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* is garbled at the different speeds.
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*/
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#include <sys/time.h>
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char *
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autobaud()
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{
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int rfds;
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struct timeval timeout;
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char c, *type = "9600-baud";
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int null = 0;
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ioctl(0, TIOCFLUSH, &null);
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rfds = 1 << 0;
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timeout.tv_sec = 5;
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timeout.tv_usec = 0;
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if (select(32, (fd_set *)&rfds, (fd_set *)NULL,
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(fd_set *)NULL, &timeout) <= 0)
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return (type);
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if (read(STDIN_FILENO, &c, sizeof(char)) != sizeof(char))
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return (type);
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timeout.tv_sec = 0;
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timeout.tv_usec = 20;
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(void) select(32, (fd_set *)NULL, (fd_set *)NULL,
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(fd_set *)NULL, &timeout);
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ioctl(0, TIOCFLUSH, &null);
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switch (c & 0377) {
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case 0200: /* 300-baud */
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type = "300-baud";
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break;
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case 0346: /* 1200-baud */
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type = "1200-baud";
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break;
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case 015: /* 2400-baud */
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case 0215:
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type = "2400-baud";
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break;
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default: /* 4800-baud */
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type = "4800-baud";
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break;
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case 0377: /* 9600-baud */
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type = "9600-baud";
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break;
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}
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return (type);
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}
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