diff options
Diffstat (limited to 'lib/libtelnet/read_password.c')
| -rw-r--r-- | lib/libtelnet/read_password.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/lib/libtelnet/read_password.c b/lib/libtelnet/read_password.c new file mode 100644 index 0000000..b8ab104 --- /dev/null +++ b/lib/libtelnet/read_password.c @@ -0,0 +1,153 @@ +/*- + * Copyright (c) 1992, 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 <sys/cdefs.h> + +#ifdef __FBSDID +__FBSDID("$FreeBSD: src/crypto/telnet/libtelnet/read_password.c,v 1.1.1.1.8.2 2002/04/13 10:59:07 markm Exp $"); +#endif + +#ifndef lint +#if 0 +static char sccsid[] = "@(#)read_password.c 8.3 (Berkeley) 5/30/95"; +#endif +#endif /* not lint */ + +/* + * $Source: /Users/Shared/libtelnet/libtelnet/read_password.c,v $ + * $Author: nicolai $ + * + * Copyright 1985, 1986, 1987, 1988 by the Massachusetts Institute + * of Technology. + * + * For copying and distribution information, please see the file + * <mit-copyright.h>. + * + * This routine prints the supplied string to standard + * output as a prompt, and reads a password string without + * echoing. + */ + +#if defined(RSA_ENCPWD) || defined(KRB4_ENCPWD) + +#include <stdio.h> +#include <strings.h> +#include <sys/ioctl.h> +#include <signal.h> +#include <setjmp.h> + +static jmp_buf env; + +/*** Routines ****************************************************** */ +/* + * This version just returns the string, doesn't map to key. + * + * Returns 0 on success, non-zero on failure. + */ + +int +local_des_read_pw_string(s,max,prompt,verify) + char *s; + int max; + char *prompt; + int verify; +{ + int ok = 0; + char *ptr; + + jmp_buf old_env; + struct sgttyb tty_state; + char key_string[BUFSIZ]; + + if (max > BUFSIZ) { + return -1; + } + + /* XXX assume jmp_buf is typedef'ed to an array */ + memmove((char *)env, (char *)old_env, sizeof(env)); + if (setjmp(env)) + goto lose; + + /* save terminal state*/ + if (ioctl(0,TIOCGETP,(char *)&tty_state) == -1) + return -1; +/* + push_signals(); +*/ + /* Turn off echo */ + tty_state.sg_flags &= ~ECHO; + if (ioctl(0,TIOCSETP,(char *)&tty_state) == -1) + return -1; + while (!ok) { + (void) printf("%s", prompt); + (void) fflush(stdout); + while (!fgets(s, max, stdin)); + + if ((ptr = strchr(s, '\n'))) + *ptr = '\0'; + if (verify) { + printf("\nVerifying, please re-enter %s",prompt); + (void) fflush(stdout); + if (!fgets(key_string, sizeof(key_string), stdin)) { + clearerr(stdin); + continue; + } + if ((ptr = strchr(key_string, '\n'))) + *ptr = '\0'; + if (strcmp(s,key_string)) { + printf("\n\07\07Mismatch - try again\n"); + (void) fflush(stdout); + continue; + } + } + ok = 1; + } + +lose: + if (!ok) + memset(s, 0, max); + printf("\n"); + /* turn echo back on */ + tty_state.sg_flags |= ECHO; + if (ioctl(0,TIOCSETP,(char *)&tty_state)) + ok = 0; +/* + pop_signals(); +*/ + memmove((char *)old_env, (char *)env, sizeof(env)); + if (verify) + memset(key_string, 0, sizeof (key_string)); + s[max-1] = 0; /* force termination */ + return !ok; /* return nonzero if not okay */ +} +#endif /* defined(RSA_ENCPWD) || defined(KRB4_ENCPWD) */ |