mirror of
https://git.FreeBSD.org/src.git
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161 lines
2.9 KiB
C
161 lines
2.9 KiB
C
/* Getpass.c */
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/* $RCSfile: getpass.c,v $
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* $Revision: 14020.11 $
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* $Date: 93/05/21 05:44:36 $
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*/
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#include "sys.h"
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#include <signal.h>
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#include "util.h"
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#include "cmds.h"
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#include "getpass.h"
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#include "copyright.h"
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#ifndef GETPASS
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#ifndef sun /* ...both unnecessary, and conflicting with <termios.h> */
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#include <sys/ioctl.h>
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#endif
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#ifdef TERMIOS
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# include <termios.h>
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#else
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# ifdef SGTTYB
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# include <sgtty.h>
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# else
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# include <termio.h>
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# endif
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#endif /* !TERMIOS */
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#ifdef STRICT_PROTOS
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int ioctl(int, int, ...);
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#endif
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#endif /* GETPASS */
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void Echo(FILE *fp, int on)
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{
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#ifndef GETPASS /* Otherwise just do nothing which is ok. */
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#ifdef TERMIOS
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static struct termios orig, noecho, *tp;
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#else
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# ifdef SGTTYB
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static struct sgttyb orig, noecho, *tp;
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# else
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static struct termio orig, noecho, *tp;
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# endif
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#endif
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static int state = 0;
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int fd = fileno(fp);
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if (!isatty(fd))
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return;
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if (state == 0) {
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#ifdef TERMIOS
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if (tcgetattr(fd, &orig) < 0)
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PERROR("echo", "tcgetattr");
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noecho = orig;
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noecho.c_lflag &= ~ECHO;
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#else
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# ifdef SGTTYB
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if (ioctl(fd, TIOCGETP, &orig) < 0)
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PERROR("echo", "ioctl");
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noecho = orig;
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noecho.sg_flags &= ~ECHO;
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# else
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if (ioctl(fd, TCGETA, &orig) < 0)
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PERROR("echo", "ioctl");
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noecho = orig;
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noecho.c_lflag &= ~ECHO;
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# endif
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#endif
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state = 1;
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}
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tp = NULL;
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if (on && state == 2) {
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/* Turn echo back on. */
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tp = &orig;
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state = 1;
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} else if (!on && state == 1) {
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/* Turn echo off. */
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tp = &noecho;
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state = 2;
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}
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if (tp != NULL) {
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#ifdef TERMIOS
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if (tcsetattr(fd, TCSANOW, tp) < 0)
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PERROR("echo", "tcsetattr");
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#else
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# ifdef SGTTYB
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if (ioctl(fd, TIOCSETP, tp) < 0)
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PERROR("echo", "ioctl");
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# else
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if (ioctl(fd, TCSETA, tp) < 0)
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PERROR("echo", "ioctl");
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# endif
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#endif /* !TERMIOS */
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}
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#endif /* GETPASS */
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} /* Echo */
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#ifndef GETPASS
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char *Getpass(char *promptstr)
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{
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register int ch;
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register char *p;
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FILE *fp, *outfp;
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Sig_t oldintr;
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static char buf[kMaxPassLen + 1];
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/*
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* read and write to /dev/tty if possible; else read from
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* stdin and write to stderr.
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*/
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#if !defined(BOTCHED_FOPEN_RW)
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if ((outfp = fp = fopen("/dev/tty", "w+")) == NULL) {
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outfp = stderr;
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fp = stdin;
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}
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#else
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/* SCO 32v2 botches "w+" open */
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if ((fp = fopen("/dev/tty", "r")) == NULL)
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fp = stdin;
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if ((outfp = fopen("/dev/tty", "w")) == NULL)
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outfp = stderr;
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#endif
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oldintr = Signal(SIGINT, SIG_IGN);
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Echo(fp, 0); /* Turn echoing off. */
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(void) fputs(promptstr, outfp);
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(void) rewind(outfp); /* implied flush */
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for (p = buf; (ch = getc(fp)) != EOF && ch != '\n';)
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if (p < buf + kMaxPassLen)
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*p++ = ch;
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*p = '\0';
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(void)write(fileno(outfp), "\n", 1);
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Echo(fp, 1);
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(void) Signal(SIGINT, oldintr);
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if (fp != stdin)
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(void)fclose(fp);
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#if defined(BOTCHED_FOPEN_RW)
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if (outfp != stderr)
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(void)fclose(outfp);
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#endif
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return(buf);
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} /* Getpass */
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#endif /* GETPASS */
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/* eof Getpass.c */
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