+++ /dev/null
-/* $OpenBSD: readpassphrase.c,v 1.12 2001/12/15 05:41:00 millert Exp $ */
-
-/*
- * Copyright (c) 2000 Todd C. Miller <Todd.Miller@courtesan.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
- * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static const char rcsid[] = "$OpenBSD: readpassphrase.c,v 1.12 2001/12/15 05:41:00 millert Exp $";
-#endif /* LIBC_SCCS and not lint */
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD: src/lib/libc/gen/readpassphrase.c,v 1.6 2002/03/09 03:16:41 green Exp $");
-
-#include "xlocale_private.h"
-
-#include "namespace.h"
-#include <ctype.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <paths.h>
-#include <pwd.h>
-#include <signal.h>
-#include <string.h>
-#include <termios.h>
-#include <unistd.h>
-#include <readpassphrase.h>
-#include "un-namespace.h"
-
-static volatile sig_atomic_t signo;
-
-static void handler(int);
-
-char *
-readpassphrase(const char *prompt, char *buf, size_t bufsiz, int flags)
-{
- ssize_t nr;
- int input, output, save_errno;
- char ch, *p, *end;
- struct termios term, oterm;
- struct sigaction sa, saveint, savehup, savequit, saveterm;
- struct sigaction savetstp, savettin, savettou;
- locale_t loc = __current_locale();
-
- /* I suppose we could alloc on demand in this case (XXX). */
- if (bufsiz == 0) {
- errno = EINVAL;
- return(NULL);
- }
-
-restart:
- /*
- * Read and write to /dev/tty if available. If not, read from
- * stdin and write to stderr unless a tty is required.
- */
- if ((input = output = _open(_PATH_TTY, O_RDWR)) == -1) {
- if (flags & RPP_REQUIRE_TTY) {
- errno = ENOTTY;
- return(NULL);
- }
- input = STDIN_FILENO;
- output = STDERR_FILENO;
- }
-
- /*
- * Catch signals that would otherwise cause the user to end
- * up with echo turned off in the shell. Don't worry about
- * things like SIGALRM and SIGPIPE for now.
- */
- sigemptyset(&sa.sa_mask);
- sa.sa_flags = 0; /* don't restart system calls */
- sa.sa_handler = handler;
- (void)_sigaction(SIGINT, &sa, &saveint);
- (void)_sigaction(SIGHUP, &sa, &savehup);
- (void)_sigaction(SIGQUIT, &sa, &savequit);
- (void)_sigaction(SIGTERM, &sa, &saveterm);
- (void)_sigaction(SIGTSTP, &sa, &savetstp);
- (void)_sigaction(SIGTTIN, &sa, &savettin);
- (void)_sigaction(SIGTTOU, &sa, &savettou);
-
- /* Turn off echo if possible. */
- if (tcgetattr(input, &oterm) == 0) {
- memcpy(&term, &oterm, sizeof(term));
- if (!(flags & RPP_ECHO_ON))
- term.c_lflag &= ~(ECHO | ECHONL);
- if (term.c_cc[VSTATUS] != _POSIX_VDISABLE)
- term.c_cc[VSTATUS] = _POSIX_VDISABLE;
- (void)tcsetattr(input, TCSAFLUSH|TCSASOFT, &term);
- } else {
- memset(&term, 0, sizeof(term));
- memset(&oterm, 0, sizeof(oterm));
- }
-
- (void)_write(output, prompt, strlen(prompt));
- end = buf + bufsiz - 1;
- for (p = buf; (nr = _read(input, &ch, 1)) == 1 && ch != '\n' && ch != '\r';) {
- if (p < end) {
- if ((flags & RPP_SEVENBIT))
- ch &= 0x7f;
- if (isalpha_l(ch, loc)) {
- if ((flags & RPP_FORCELOWER))
- ch = tolower_l(ch, loc);
- if ((flags & RPP_FORCEUPPER))
- ch = toupper_l(ch, loc);
- }
- *p++ = ch;
- }
- }
- *p = '\0';
- save_errno = errno;
- if (!(term.c_lflag & ECHO))
- (void)_write(output, "\n", 1);
-
- /* Restore old terminal settings and signals. */
- if (memcmp(&term, &oterm, sizeof(term)) != 0)
- (void)tcsetattr(input, TCSANOW|TCSASOFT, &oterm);
- (void)_sigaction(SIGINT, &saveint, NULL);
- (void)_sigaction(SIGHUP, &savehup, NULL);
- (void)_sigaction(SIGQUIT, &savequit, NULL);
- (void)_sigaction(SIGTERM, &saveterm, NULL);
- (void)_sigaction(SIGTSTP, &savetstp, NULL);
- (void)_sigaction(SIGTTIN, &savettin, NULL);
- (void)_sigaction(SIGTTOU, &savettou, NULL);
- if (input != STDIN_FILENO)
- (void)_close(input);
-
- /*
- * If we were interrupted by a signal, resend it to ourselves
- * now that we have restored the signal handlers.
- */
- if (signo) {
- kill(getpid(), signo);
- switch (signo) {
- case SIGTSTP:
- case SIGTTIN:
- case SIGTTOU:
- signo = 0;
- goto restart;
- }
- }
-
- errno = save_errno;
- return(nr == -1 ? NULL : buf);
-}
-
-char *
-getpass(const char *prompt)
-{
- static char buf[_PASSWORD_LEN + 1];
-
- if (readpassphrase(prompt, buf, sizeof(buf), RPP_ECHO_OFF) == NULL)
- buf[0] = '\0';
- return(buf);
-}
-
-static void handler(int s)
-{
-
- signo = s;
-}
projects / apple / libc.git / blobdiff