45 lines
909 B
C
45 lines
909 B
C
/*
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* getpass - ask for a password
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*/
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/* $Id$ */
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#include <signal.h>
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#include <string.h>
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#include <sgtty.h>
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#define O_RDONLY 0
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int _open(const char *path, int flags);
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int _write(int d, const char *buf, int nbytes);
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int _read(int d, char *buf, int nbytes);
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int _close(int d);
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int _stty(int, struct sgttyb *);
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int _gtty(int, struct sgttyb *);
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char *
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getpass(const char *prompt)
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{
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int i = 0;
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struct sgttyb tty, ttysave;
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static char pwdbuf[9];
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int fd;
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void (*savesig)(int);
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if ((fd = _open("/dev/tty", O_RDONLY)) < 0) fd = 0;
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savesig = signal(SIGINT, SIG_IGN);
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_write(2, prompt, strlen(prompt));
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_gtty(fd, &tty);
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ttysave = tty;
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tty.sg_flags &= ~ECHO;
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_stty(fd, &tty);
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i = _read(fd, pwdbuf, 9);
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while (pwdbuf[i - 1] != '\n')
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_read(fd, &pwdbuf[i - 1], 1);
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pwdbuf[i - 1] = '\0';
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_stty(fd, &ttysave);
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_write(2, "\n", 1);
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if (fd != 0) _close(fd);
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signal(SIGINT, savesig);
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return(pwdbuf);
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}
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