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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [unix/] [getpass.c] - Rev 307
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#ifndef _NO_GETPASS /* * Copyright (c) 1988 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. * 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. */ #if defined(LIBC_SCCS) && !defined(lint) static char sccsid[] = "@(#)getpass.c 5.9 (Berkeley) 5/6/91"; #endif /* LIBC_SCCS and not lint */ #include <stdio.h> #include <unistd.h> #include <pwd.h> #include <sys/termios.h> #include <sys/signal.h> #include <_syslist.h> #ifndef _PATH_PASSWD #define _PATH_PASSWD "/etc/passwd" #endif #ifndef _PASSWORD_LEN #define _PASSWORD_LEN 128 /* max length, not counting NULL */ #endif char * getpass (prompt) const char *prompt; { struct termios term; register int ch; register char *p; FILE *fp, *outfp; long omask; int echo; static char buf[_PASSWORD_LEN + 1]; /* * read and write to /dev/tty if possible; else read from * stdin and write to stderr. */ if ((outfp = fp = fopen ("/dev/tty", "w+")) == NULL) { outfp = stderr; fp = stdin; } /* * note - blocking signals isn't necessarily the * right thing, but we leave it for now. */ omask = sigblock (sigmask (SIGINT) | sigmask (SIGTSTP)); (void) tcgetattr (fileno (fp), &term); echo = (term.c_lflag & ECHO); if (echo) { term.c_lflag &= ~ECHO; (void) tcsetattr (fileno (fp), TCSAFLUSH, &term); } (void) fputs (prompt, outfp); rewind (outfp); /* implied flush */ for (p = buf; (ch = getc (fp)) != EOF && ch != '\n';) if (p < buf + _PASSWORD_LEN) *p++ = ch; *p = '\0'; (void) write (fileno (outfp), "\n", 1); if (echo) { term.c_lflag |= ECHO; tcsetattr (fileno (fp), TCSAFLUSH, &term); } (void) sigsetmask (omask); if (fp != stdin) (void) fclose (fp); return buf; } #endif /* !_NO_GETPASS */
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