50fcb4ee77
This change has been motivated by a mail from bde sent in 2015 in which he mentioned inappropriate use of sscanf() in 3 programs in /bin. This change removes the potential mismatch of the types of the return values and the variable width specified in the scan pattern. While there was no issue with the patterns and types used, the new code is simpler and more efficient.
129 lines
3.5 KiB
C
129 lines
3.5 KiB
C
/*-
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* Copyright (c) 1991, 1993, 1994
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* The Regents of the University of California. 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. 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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#if 0
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static char sccsid[] = "@(#)gfmt.c 8.6 (Berkeley) 4/2/94";
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#endif
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#endif /* not lint */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <err.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "stty.h"
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#include "extern.h"
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static void gerr(const char *s) __dead2;
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static void
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gerr(const char *s)
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{
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if (s)
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errx(1, "illegal gfmt1 option -- %s", s);
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else
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errx(1, "illegal gfmt1 option");
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}
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void
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gprint(struct termios *tp, struct winsize *wp __unused, int ldisc __unused)
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{
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struct cchar *cp;
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(void)printf("gfmt1:cflag=%lx:iflag=%lx:lflag=%lx:oflag=%lx:",
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(u_long)tp->c_cflag, (u_long)tp->c_iflag, (u_long)tp->c_lflag,
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(u_long)tp->c_oflag);
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for (cp = cchars1; cp->name; ++cp)
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(void)printf("%s=%x:", cp->name, tp->c_cc[cp->sub]);
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(void)printf("ispeed=%lu:ospeed=%lu\n",
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(u_long)cfgetispeed(tp), (u_long)cfgetospeed(tp));
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}
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void
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gread(struct termios *tp, char *s)
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{
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struct cchar *cp;
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char *ep, *p;
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long tmp;
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if ((s = strchr(s, ':')) == NULL)
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gerr(NULL);
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for (++s; s != NULL;) {
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p = strsep(&s, ":\0");
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if (!p || !*p)
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break;
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if (!(ep = strchr(p, '=')))
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gerr(p);
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*ep++ = '\0';
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tmp = strtoul(ep, NULL, 0x10);
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#define CHK(s) (*p == s[0] && !strcmp(p, s))
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if (CHK("cflag")) {
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tp->c_cflag = tmp;
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continue;
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}
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if (CHK("iflag")) {
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tp->c_iflag = tmp;
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continue;
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}
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if (CHK("ispeed")) {
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tmp = strtoul(ep, NULL, 10);
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tp->c_ispeed = tmp;
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continue;
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}
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if (CHK("lflag")) {
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tp->c_lflag = tmp;
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continue;
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}
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if (CHK("oflag")) {
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tp->c_oflag = tmp;
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continue;
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}
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if (CHK("ospeed")) {
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tmp = strtoul(ep, NULL, 10);
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tp->c_ospeed = tmp;
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continue;
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}
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for (cp = cchars1; cp->name != NULL; ++cp)
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if (CHK(cp->name)) {
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if (cp->sub == VMIN || cp->sub == VTIME)
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tmp = strtoul(ep, NULL, 10);
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tp->c_cc[cp->sub] = tmp;
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break;
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}
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if (cp->name == NULL)
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gerr(p);
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}
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}
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