diff options
Diffstat (limited to 'lib/getpass.c')
| -rw-r--r-- | lib/getpass.c | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/lib/getpass.c b/lib/getpass.c new file mode 100644 index 000000000..c0c7bf97b --- /dev/null +++ b/lib/getpass.c @@ -0,0 +1,185 @@ +/* ============================================================================ + * Copyright (C) 1998 Angus Mackay. All rights reserved; + * + * Redistribution and use are freely permitted provided that: + * + * 1) This header remain in tact. + * 2) The prototype for getpass is not changed from: + * char *getpass(const char *prompt) + * 3) This source code is not used outside of this(getpass.c) file. + * 3) Any changes to this(getpass.c) source code are made publicly available. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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. + * ============================================================================ + * + * $Id$ + * + * The spirit of this license is to allow use of this source code in any + * project be it open or closed but still encourage the use of the open, + * library based equivilents. + * + * Author(s): + * Angus Mackay <amackay@gus.ml.org> + * + * Contributor(s): + * Daniel Stenberg <Daniel.Stenberg@haxx.nu> + */ + +#ifndef WIN32 +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + +#ifdef HAVE_TERMIOS_H +# if !defined(HAVE_TCGETATTR) && !defined(HAVE_TCSETATTR) +# undef HAVE_TERMIOS_H +# endif +#endif + +#define INPUT_BUFFER 128 + +#ifndef RETSIGTYPE +# define RETSIGTYPE void +#endif + +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif +#include <stdio.h> +#include <signal.h> +#ifdef HAVE_TERMIOS_H +# include <termios.h> +#else +# ifdef HAVE_TERMIO_H +# include <termio.h> +# else +# endif +#endif + +/* no perror? make an fprintf! */ +#ifndef HAVE_PERROR +# define perror(x) fprintf(stderr, "Error in: %s\n", x) +#endif + +char *getpass(const char *prompt) +{ + FILE *infp; + FILE *outfp; + static char buf[INPUT_BUFFER]; + RETSIGTYPE (*sigint)(); + RETSIGTYPE (*sigtstp)(); + size_t bytes_read; + int infd; + int outfd; +#ifdef HAVE_TERMIOS_H + struct termios orig; + struct termios noecho; +#else +# ifdef HAVE_TERMIO_H + struct termio orig; + struct termio noecho; +# else +# endif +#endif + + sigint = signal(SIGINT, SIG_IGN); + sigtstp = signal(SIGTSTP, SIG_IGN); + + if( (infp=fopen("/dev/tty", "r")) == NULL ) + { + infp = stdin; + } + if( (outfp=fopen("/dev/tty", "w")) == NULL ) + { + outfp = stderr; + } + infd = fileno(infp); + outfd = fileno(outfp); + + /* dissable echo */ +#ifdef HAVE_TERMIOS_H + if(tcgetattr(outfd, &orig) != 0) + { + perror("tcgetattr"); + } + noecho = orig; + noecho.c_lflag &= ~ECHO; + if(tcsetattr(outfd, TCSANOW, &noecho) != 0) + { + perror("tcgetattr"); + } +#else +# ifdef HAVE_TERMIO_H + if(ioctl(outfd, TCGETA, &orig) != 0) + { + perror("ioctl"); + } + noecho = orig; + noecho.c_lflag &= ~ECHO; + if(ioctl(outfd, TCSETA, &noecho) != 0) + { + perror("ioctl"); + } +# else +# endif +#endif + + fputs(prompt, outfp); + fflush(outfp); + + bytes_read=read(infd, buf, INPUT_BUFFER); + buf[bytes_read > 0 ? (bytes_read -1) : 0] = '\0'; + + /* print a new line if needed */ +#ifdef HAVE_TERMIOS_H + fputs("\n", outfp); +#else +# ifdef HAVE_TERMIO_H + fputs("\n", outfp); +# else +# endif +#endif + + /* + * reset term charectaristics, use TCSAFLUSH incase the + * user types more than INPUT_BUFFER + */ +#ifdef HAVE_TERMIOS_H + if(tcsetattr(outfd, TCSAFLUSH, &orig) != 0) + { + perror("tcgetattr"); + } +#else +# ifdef HAVE_TERMIO_H + if(ioctl(outfd, TCSETA, &orig) != 0) + { + perror("ioctl"); + } +# else +# endif +#endif + + signal(SIGINT, sigint); + signal(SIGTSTP, sigtstp); + + return(buf); +} +#else +#include <stdio.h> +char *getpass(const char *prompt) +{ + static char password[80]; + printf(prompt); + gets(password); + return password; +} +#endif /* don't do anything if WIN32 */ |