ref: dfb4b522830edab8f3856289d326d6cf5e930644
dir: /sys/src/ape/lib/v/plan9/getpass.c/
#define _POSIX_SOURCE #define _RESEARCH_SOURCE #include <stdio.h> #include <signal.h> #include <limits.h> #include <libv.h> char * getpass(char *prompt) { int c; char *p; FILE *fi; static char pbuf[PASS_MAX]; void (*sig)(int); if ((fi = fopen("/dev/cons", "r")) == NULL) fi = stdin; else setbuf(fi, NULL); sig = signal(SIGINT, SIG_IGN); tty_echooff(fileno(fi)); fprintf(stderr, "%s", prompt); fflush(stderr); for (p = pbuf; (c = getc(fi)) != '\n' && c != EOF; ) if (c == ('u' & 037)) p = pbuf; else if (c == '\b') { if (p > pbuf) p--; } else if (p < &pbuf[sizeof(pbuf)-1]) *p++ = c; *p = '\0'; fprintf(stderr, "\n"); fflush(stderr); tty_echoon(fileno(fi)); signal(SIGINT, sig); if (fi != stdin) fclose(fi); return(pbuf); }