Initial revision

diff --git a/tgetpass.c b/tgetpass.c
new file mode 100644 (file)
index 0000000..1c114d9
--- /dev/null
+++ b/tgetpass.c
@@ -0,0 +1,149 @@
+#include "config.h"
+#include "pathnames.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <strings.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <signal.h>
+#include <fcntl.h>
+#ifdef HAVE_TERMIOS_H
+#include <termios.h>
+#else
+#ifdef HAVE_TERMIO_H
+#include <termio.h>
+#else
+#include <sgtty.h>
+#include <sys/ioctl.h>
+#endif /* HAVE_TERMIO_H */
+#endif /* HAVE_TERMIOS_H */
+
+#ifndef _PASSWD_LEN
+#define        _PASSWD_LEN     8
+#endif /* _PASSWD_LEN */
+
+
+char * tgetpass(prompt, timeout)
+    const char *prompt;
+    int timeout;
+{
+#ifdef HAVE_TERMIOS_H
+    struct termios term;
+#else
+#ifdef HAVE_TERMIO_H
+    struct termio term;
+#else
+    struct sgttyb ttyb;
+#endif /* HAVE_TERMIO_H */
+#endif /* HAVE_TERMIOS_H */
+    FILE *input, *output;
+    static char buf[_PASSWD_LEN + 1];
+    int oldmask;
+    fd_set readfds;
+    struct timeval tv;
+#ifdef HAVE_TERMIO_H
+    tcflag_t svflagval;
+#else
+    int svflagval;
+#endif
+    int i;
+    char c;
+
+    /*
+     * mask out SIGINT
+     */
+    oldmask = sigblock(sigmask(SIGINT));
+
+    /*
+     * open /dev/tty for reading/writing if possible or use
+     * stdin and stderr instead.
+     */
+    input = fopen(_PATH_TTY, "r+");
+    if (!input) {
+       input = stdin;
+       output = stderr;
+    } else {
+       output = input;
+    }
+
+    /*
+     * turn off echo
+     */
+#ifdef HAVE_TERMIOS_H
+    (void) tcgetattr(fileno(input), &term);
+    svflagval = term.c_lflag;
+    term.c_lflag &= ~ECHO;
+    (void) tcsetattr(fileno(input), TCSAFLUSH, &term);
+#else
+#ifdef HAVE_TERMIO_H
+    (void) ioctl(fileno(input), TCGETA, &term);
+    svflagval = term.c_lflag;
+    term.c_lflag &= ~ECHO;
+    (void) ioctl(fileno(input), TCSETA, &term);
+#else
+    (void) ioctl(fileno(input), TIOCGETP, &ttyb);
+    svflagval = ttyb.sg_flags;
+    ttyb.sg_flags &= ~ECHO;
+    (void) ioctl(fileno(input), TIOCSETP, &ttyb);
+#endif /* HAVE_TERMIO_H */
+#endif /* HAVE_TERMIOS_H */
+
+    /* print the prompt & rewind */
+    (void) fputs(prompt, output);
+    (void) fflush(output);
+    (void) rewind(output);
+
+    /* setup for select(2) */
+    FD_ZERO(&readfds);
+
+    /* get the password */
+    buf[0] = NULL;
+#if 0
+    fgets(buf, sizeof(buf), input);
+    buf[sizeof(buf) -1 ] = '\0';
+#else
+    for (i=0; i < _PASSWD_LEN; i++) {
+       /* do select */
+       FD_SET(fileno(input), &readfds);
+       tv.tv_sec = timeout;
+       tv.tv_usec = 0;
+       if (select(getdtablesize(), &readfds, NULL, NULL, &tv) <= 0) {
+           i = 0;
+           break;
+       }
+       c = fgetc(input);
+       if (c == EOF || c == '\n')
+           break;
+       buf[i] = c;
+    }
+    buf[i] = '\0';
+#endif
+
+     /* turn on echo */
+#ifdef HAVE_TERMIOS_H
+    term.c_lflag = svflagval;
+    tcsetattr(fileno(input), TCSAFLUSH, &term);
+#else
+#ifdef HAVE_TERMIO_H
+    term.c_lflag = svflagval;
+    (void) ioctl(fileno(fp), TCSETA, &term);
+#else
+    ttyb.sg_flags = svflagval;
+    (void) ioctl(fileno(fp), TIOCSETP, &ttyb);
+#endif /* HAVE_TERMIO_H */
+#endif /* HAVE_TERMIOS_H */
+
+    /* restore old signal mask */
+    (void) sigsetmask(oldmask);
+
+    /* close /dev/tty if that's what we opened */
+    if (input != stdin)
+       (void) fclose(input);
+
+    if (buf[0])
+       return(buf);
+    else
+       /* XXX - set errno? */
+       return(NULL);
+}