diff options
Diffstat (limited to 'crypto/openssh/readpass.c')
| -rw-r--r-- | crypto/openssh/readpass.c | 119 |
1 files changed, 0 insertions, 119 deletions
diff --git a/crypto/openssh/readpass.c b/crypto/openssh/readpass.c deleted file mode 100644 index 85d88f804610f..0000000000000 --- a/crypto/openssh/readpass.c +++ /dev/null @@ -1,119 +0,0 @@ -/* - * Copyright (c) 1988, 1993 - * The Regents of the University of California. 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. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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. - */ - -#include "includes.h" -RCSID("$Id: readpass.c,v 1.10 2000/04/14 10:30:32 markus Exp $"); - -#include "xmalloc.h" -#include "ssh.h" - -volatile int intr; - -void -intcatch() -{ - intr = 1; -} - -/* - * Reads a passphrase from /dev/tty with echo turned off. Returns the - * passphrase (allocated with xmalloc), being very careful to ensure that - * no other userland buffer is storing the password. - */ -char * -read_passphrase(const char *prompt, int from_stdin) -{ - char buf[1024], *p, ch; - struct termios tio, saved_tio; - sigset_t oset, nset; - struct sigaction sa, osa; - int input, output, echo = 0; - - if (from_stdin) { - input = STDIN_FILENO; - output = STDERR_FILENO; - } else - input = output = open("/dev/tty", O_RDWR); - - if (input == -1) - fatal("You have no controlling tty. Cannot read passphrase.\n"); - - /* block signals, get terminal modes and turn off echo */ - sigemptyset(&nset); - sigaddset(&nset, SIGTSTP); - (void) sigprocmask(SIG_BLOCK, &nset, &oset); - memset(&sa, 0, sizeof(sa)); - sa.sa_handler = intcatch; - (void) sigaction(SIGINT, &sa, &osa); - - intr = 0; - - if (tcgetattr(input, &saved_tio) == 0 && (saved_tio.c_lflag & ECHO)) { - echo = 1; - tio = saved_tio; - tio.c_lflag &= ~(ECHO | ECHOE | ECHOK | ECHONL); - (void) tcsetattr(input, TCSANOW, &tio); - } - - fflush(stdout); - - (void)write(output, prompt, strlen(prompt)); - for (p = buf; read(input, &ch, 1) == 1 && ch != '\n';) { - if (intr) - break; - if (p < buf + sizeof(buf) - 1) - *p++ = ch; - } - *p = '\0'; - if (!intr) - (void)write(output, "\n", 1); - - /* restore terminal modes and allow signals */ - if (echo) - tcsetattr(input, TCSANOW, &saved_tio); - (void) sigprocmask(SIG_SETMASK, &oset, NULL); - (void) sigaction(SIGINT, &osa, NULL); - - if (intr) { - kill(getpid(), SIGINT); - sigemptyset(&nset); - /* XXX tty has not neccessarily drained by now? */ - sigsuspend(&nset); - } - - if (!from_stdin) - (void)close(input); - p = xstrdup(buf); - memset(buf, 0, sizeof(buf)); - return (p); -} |