30fe4a067c
Set adminstrative domain for the process when looking up user's
password or group info and when preparing for execve().
Include strings.h even if string.h exists since they may define
different things. Fixes warnings on AIX and others.
155 lines
3.4 KiB
C
155 lines
3.4 KiB
C
/*
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* Copyright (c) 2010 Todd C. Miller <Todd.Miller@courtesan.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <config.h>
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#include <sys/types.h>
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#include <sys/param.h>
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#include <stdio.h>
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#ifdef STDC_HEADERS
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# include <stdlib.h>
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# include <stddef.h>
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#else
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# ifdef HAVE_STDLIB_H
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# include <stdlib.h>
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# endif
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#endif /* STDC_HEADERS */
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#ifdef HAVE_STRING_H
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# if defined(HAVE_MEMORY_H) && !defined(STDC_HEADERS)
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# include <memory.h>
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# endif
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# include <string.h>
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#endif /* HAVE_STRING_H */
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif /* HAVE_STRINGS_H */
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#include <termios.h>
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#include <compat.h>
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#ifndef TCSASOFT
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# define TCSASOFT 0
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#endif
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#ifndef ECHONL
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# define ECHONL 0
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#endif
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#ifndef IEXTEN
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# define IEXTEN 0
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#endif
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#ifndef IUCLC
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# define IUCLC 0
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#endif
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#ifndef _POSIX_VDISABLE
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# ifdef VDISABLE
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# define _POSIX_VDISABLE VDISABLE
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# else
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# define _POSIX_VDISABLE 0
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# endif
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#endif
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static struct termios term, oterm;
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static int changed;
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int term_erase;
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int term_kill;
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int
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term_restore(int fd, int flush)
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{
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if (changed) {
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int flags = TCSASOFT;
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flags |= flush ? TCSAFLUSH : TCSADRAIN;
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if (tcsetattr(fd, flags, &oterm) != 0)
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return(0);
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changed = 0;
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}
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return(1);
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}
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int
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term_noecho(int fd)
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{
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if (!changed && tcgetattr(fd, &oterm) != 0)
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return(0);
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(void) memcpy(&term, &oterm, sizeof(term));
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CLR(term.c_lflag, ECHO|ECHONL);
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#ifdef VSTATUS
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term.c_cc[VSTATUS] = _POSIX_VDISABLE;
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#endif
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if (tcsetattr(fd, TCSADRAIN|TCSASOFT, &term) == 0) {
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changed = 1;
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return(1);
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}
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return(0);
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}
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int
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term_raw(int fd, int isig)
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{
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struct termios term;
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if (!changed && tcgetattr(fd, &oterm) != 0)
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return(0);
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(void) memcpy(&term, &oterm, sizeof(term));
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/* Set terminal to raw mode */
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term.c_cc[VMIN] = 1;
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term.c_cc[VTIME] = 0;
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CLR(term.c_lflag, ECHO | ECHONL | ICANON | ISIG | IEXTEN);
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if (isig)
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SET(term.c_lflag, ISIG);
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CLR(term.c_iflag, ICRNL | IGNCR | INLCR | IUCLC | IXON);
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if (tcsetattr(fd, TCSADRAIN|TCSASOFT, &term) == 0) {
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changed = 1;
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return(1);
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}
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return(0);
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}
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int
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term_cbreak(int fd)
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{
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if (!changed && tcgetattr(fd, &oterm) != 0)
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return(0);
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(void) memcpy(&term, &oterm, sizeof(term));
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/* Set terminal to half-cooked mode */
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term.c_cc[VMIN] = 1;
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term.c_cc[VTIME] = 0;
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CLR(term.c_lflag, ECHO | ECHONL | ICANON | IEXTEN);
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SET(term.c_lflag, ISIG);
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#ifdef VSTATUS
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term.c_cc[VSTATUS] = _POSIX_VDISABLE;
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#endif
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if (tcsetattr(fd, TCSADRAIN|TCSASOFT, &term) == 0) {
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term_erase = term.c_cc[VERASE];
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term_kill = term.c_cc[VKILL];
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changed = 1;
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return(1);
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}
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return(0);
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}
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int
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term_copy(int src, int dst)
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{
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struct termios tt;
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if (tcgetattr(src, &tt) != 0)
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return(0);
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if (tcsetattr(dst, TCSANOW|TCSASOFT, &tt) != 0)
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return(0);
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return(1);
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}
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