summaryrefslogtreecommitdiffstats
path: root/src/appl/telnet/libtelnet/gettytab.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/appl/telnet/libtelnet/gettytab.c')
-rw-r--r--src/appl/telnet/libtelnet/gettytab.c307
1 files changed, 0 insertions, 307 deletions
diff --git a/src/appl/telnet/libtelnet/gettytab.c b/src/appl/telnet/libtelnet/gettytab.c
deleted file mode 100644
index d50f8797eb..0000000000
--- a/src/appl/telnet/libtelnet/gettytab.c
+++ /dev/null
@@ -1,307 +0,0 @@
-/*
- * Copyright (c) 1980 Regents of the University of California.
- * All rights reserved. The Berkeley software License Agreement
- * specifies the terms and conditions for redistribution.
- */
-
-/* based on @(#)gettytab.c 5.1 (Berkeley) 4/29/85 */
-
-#include <ctype.h>
-
-#define TABBUFSIZ 512
-
-static char *tbuf;
-int hopcount; /* detect infinite loops in termcap, init 0 */
-char *skip();
-char *getstr();
-char *decode();
-
-/*
- * Get an entry for terminal name in buffer bp,
- * from the termcap file. Parse is very rudimentary;
- * we just notice escaped newlines.
- */
-getent(bp, name)
- char *bp, *name;
-{
- register char *cp;
- register int c;
- register int i = 0, cnt = 0;
- char ibuf[TABBUFSIZ];
- char *cp2;
- int tf;
-
- tbuf = bp;
- tf = open("/etc/gettytab", 0);
- if (tf < 0)
- return (-1);
- for (;;) {
- cp = bp;
- for (;;) {
- if (i == cnt) {
- cnt = read(tf, ibuf, TABBUFSIZ);
- if (cnt <= 0) {
- close(tf);
- return (0);
- }
- i = 0;
- }
- c = ibuf[i++];
- if (c == '\n') {
- if (cp > bp && cp[-1] == '\\'){
- cp--;
- continue;
- }
- break;
- }
- if (cp >= bp+TABBUFSIZ) {
- write(2,"Gettytab entry too long\n", 24);
- break;
- } else
- *cp++ = c;
- }
- *cp = 0;
-
- /*
- * The real work for the match.
- */
- if (namatch(name)) {
- close(tf);
- return(nchktc());
- }
- }
-}
-
-/*
- * tnchktc: check the last entry, see if it's tc=xxx. If so,
- * recursively find xxx and append that entry (minus the names)
- * to take the place of the tc=xxx entry. This allows termcap
- * entries to say "like an HP2621 but doesn't turn on the labels".
- * Note that this works because of the left to right scan.
- */
-#define MAXHOP 32
-nchktc()
-{
- register char *p, *q;
- char tcname[16]; /* name of similar terminal */
- char tcbuf[TABBUFSIZ];
- char *holdtbuf = tbuf;
- int l;
-
- p = tbuf + strlen(tbuf) - 2; /* before the last colon */
- while (*--p != ':')
- if (p<tbuf) {
- write(2, "Bad gettytab entry\n", 19);
- return (0);
- }
- p++;
- /* p now points to beginning of last field */
- if (p[0] != 't' || p[1] != 'c')
- return(1);
- strncpy(tcname, p + 3, sizeof(tcname) - 1);
- tcname[sizeof(tcname) - 1] = '\0';
- q = tcname;
- while (*q && *q != ':')
- q++;
- *q = 0;
- if (++hopcount > MAXHOP) {
- write(2, "Getty: infinite tc= loop\n", 25);
- return (0);
- }
- if (getent(tcbuf, tcname) != 1)
- return(0);
- for (q=tcbuf; *q != ':'; q++)
- ;
- l = p - holdtbuf + strlen(q);
- if (l > TABBUFSIZ) {
- write(2, "Gettytab entry too long\n", 24);
- q[TABBUFSIZ - (p-tbuf)] = 0;
- }
- strlcpy(p, q+1, TABBUFSIZ - (p-tbuf));
- tbuf = holdtbuf;
- return(1);
-}
-
-/*
- * Tnamatch deals with name matching. The first field of the termcap
- * entry is a sequence of names separated by |'s, so we compare
- * against each such name. The normal : terminator after the last
- * name (before the first field) stops us.
- */
-namatch(np)
- char *np;
-{
- register char *Np, *Bp;
-
- Bp = tbuf;
- if (*Bp == '#')
- return(0);
- for (;;) {
- for (Np = np; *Np && *Bp == *Np; Bp++, Np++)
- continue;
- if (*Np == 0 && (*Bp == '|' || *Bp == ':' || *Bp == 0))
- return (1);
- while (*Bp && *Bp != ':' && *Bp != '|')
- Bp++;
- if (*Bp == 0 || *Bp == ':')
- return (0);
- Bp++;
- }
-}
-
-/*
- * Skip to the next field. Notice that this is very dumb, not
- * knowing about \: escapes or any such. If necessary, :'s can be put
- * into the termcap file in octal.
- */
-static char *
-skip(bp)
- register char *bp;
-{
-
- while (*bp && *bp != ':')
- bp++;
- if (*bp == ':')
- bp++;
- return (bp);
-}
-
-/*
- * Return the (numeric) option id.
- * Numeric options look like
- * li#80
- * i.e. the option string is separated from the numeric value by
- * a # character. If the option is not found we return -1.
- * Note that we handle octal numbers beginning with 0.
- */
-long
-getnum(id)
- char *id;
-{
- register long i, base;
- register char *bp = tbuf;
-
- for (;;) {
- bp = skip(bp);
- if (*bp == 0)
- return (-1);
- if (*bp++ != id[0] || *bp == 0 || *bp++ != id[1])
- continue;
- if (*bp == '@')
- return(-1);
- if (*bp != '#')
- continue;
- bp++;
- base = 10;
- if (*bp == '0')
- base = 8;
- i = 0;
- while (isdigit(*bp))
- i *= base, i += *bp++ - '0';
- return (i);
- }
-}
-
-/*
- * Handle a flag option.
- * Flag options are given "naked", i.e. followed by a : or the end
- * of the buffer. Return 1 if we find the option, or 0 if it is
- * not given.
- */
-getflag(id)
- char *id;
-{
- register char *bp = tbuf;
-
- for (;;) {
- bp = skip(bp);
- if (!*bp)
- return (-1);
- if (*bp++ == id[0] && *bp != 0 && *bp++ == id[1]) {
- if (!*bp || *bp == ':')
- return (1);
- else if (*bp == '!')
- return (0);
- else if (*bp == '@')
- return(-1);
- }
- }
-}
-
-/*
- * Get a string valued option.
- * These are given as
- * cl=^Z
- * Much decoding is done on the strings, and the strings are
- * placed in area, which is a ref parameter which is updated.
- * No checking on area overflow.
- */
-char *
-getstr(id, area)
- char *id, **area;
-{
- register char *bp = tbuf;
-
- for (;;) {
- bp = skip(bp);
- if (!*bp)
- return (0);
- if (*bp++ != id[0] || *bp == 0 || *bp++ != id[1])
- continue;
- if (*bp == '@')
- return(0);
- if (*bp != '=')
- continue;
- bp++;
- return (decode(bp, area));
- }
-}
-
-/*
- * Tdecode does the grung work to decode the
- * string capability escapes.
- */
-static char *
-decode(str, area)
- register char *str;
- char **area;
-{
- register char *cp;
- register int c;
- register char *dp;
- int i;
-
- cp = *area;
- while ((c = *str++) && c != ':') {
- switch (c) {
-
- case '^':
- c = *str++ & 037;
- break;
-
- case '\\':
- dp = "E\033^^\\\\::n\nr\rt\tb\bf\f";
- c = *str++;
-nextc:
- if (*dp++ == c) {
- c = *dp++;
- break;
- }
- dp++;
- if (*dp)
- goto nextc;
- if (isdigit(c)) {
- c -= '0', i = 2;
- do
- c <<= 3, c |= *str++ - '0';
- while (--i && isdigit(*str));
- }
- break;
- }
- *cp++ = c;
- }
- *cp++ = 0;
- str = *area;
- *area = cp;
- return (str);
-}