2 * Copyright (c) 1988, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 #include <stdlib.h> /* for calloc() */
39 #include <unistd.h> /* for ttyname() */
40 #include "h/mh.h" /* for adios() */
42 #define PASSWORD_LEN 128
49 getpass(const char *prompt)
51 struct termios oterm, term;
53 char *p, *ttystring, *buf;
56 if(!(buf = (char *)calloc((size_t)(PASSWORD_LEN+1), sizeof(char))))
57 adios(NULL, "unable to allocate string storage");
59 /* Find if stdin is connect to a terminal. If so, read directly from
60 * the terminal, and turn off echo. Otherwise read from stdin.
63 if((ttystring = (char *)ttyname(fileno(stdin))) == NULL) {
67 else /* Reading directly from terminal here */
69 fout = fin = fopen(ttystring, "w+");
70 (void)tcgetattr(fileno(fin), &oterm);
71 term = oterm; /* Save original info */
72 term.c_lflag &= ~ECHO;
73 (void)fputs(prompt, fout);
74 rewind(fout); /* implied flush */
75 (void)tcsetattr(fileno(fin), TCSANOW, &term);
78 for (p = buf; (ch = getc(fin)) != EOF && ch != '\n';)
79 if (p < buf + PASSWORD_LEN)
83 if(ttystring != NULL) {
84 (void)tcsetattr(fileno(fin), TCSANOW, &oterm);
86 (void)fputc('\n', fout);