55 lines
1.1 KiB
C
55 lines
1.1 KiB
C
#include <stdio.h>
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#include <signal.h>
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#include <termio.h>
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extern void setbuf();
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extern FILE *fopen();
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extern int fclose(), fprintf(), findiop();
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extern int kill(), ioctl(), getpid();
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static int intrupt;
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char *
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getpass(prompt)
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char *prompt;
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{
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struct termio ttyb;
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unsigned short flags;
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register char *p;
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register int c;
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FILE *fi;
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static char pbuf[9];
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int (*sig)(), catch();
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if((fi = fopen("/dev/tty", "r")) == NULL)
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return((char*)NULL);
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else
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setbuf(fi, (char*)NULL);
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sig = signal(SIGINT, catch);
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intrupt = 0;
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(void) ioctl(fileno(fi), TCGETA, &ttyb);
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flags = ttyb.c_lflag;
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ttyb.c_lflag &= ~(ECHO | ECHOE | ECHOK | ECHONL);
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(void) ioctl(fileno(fi), TCSETAF, &ttyb);
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(void) fputs(prompt, stderr);
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for(p=pbuf; !intrupt && (c = getc(fi)) != '\n' && c != EOF; ) {
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if(p < &pbuf[8])
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*p++ = c;
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}
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*p = '\0';
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(void) putc('\n', stderr);
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ttyb.c_lflag = flags;
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(void) ioctl(fileno(fi), TCSETA, &ttyb);
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(void) signal(SIGINT, sig);
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if(fi != stdin)
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(void) fclose(fi);
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if(intrupt)
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(void) kill(getpid(), SIGINT);
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return(pbuf);
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}
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static int
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catch()
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{
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++intrupt;
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}
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