diff options
Diffstat (limited to 'libdes/read_password.c')
| -rw-r--r-- | libdes/read_password.c | 249 |
1 files changed, 0 insertions, 249 deletions
diff --git a/libdes/read_password.c b/libdes/read_password.c deleted file mode 100644 index 59ce622..0000000 --- a/libdes/read_password.c +++ /dev/null @@ -1,249 +0,0 @@ -/* - * $Source$ - * $Author$ - * - * Copyright 1985, 1986, 1987, 1988 by the Massachusetts Institute - * of Technology. - * - * For copying and distribution information, please see the file - * <mit-copyright.h>. - * - * This routine prints the supplied string to standard - * output as a prompt, and reads a password string without - * echoing. - */ - -#ifndef lint -static char rcsid_read_password_c[] = - "$Id$"; -#endif - -#include <mit-copyright.h> -#include <des.h> - -#include <stdio.h> -#include <string.h> -#include <signal.h> -#include <setjmp.h> - -#ifdef POSIX -#include <termios.h> -#else -#include <sys/ioctl.h> -#endif - -#ifdef POSIX -typedef void sigtype; -static sigjmp_buf env; -#else -typedef int sigtype; -static jmp_buf env; -#endif - -static sigtype sig_restore(); -static push_signals(), pop_signals(); -int des_read_pw_string(); - -/*** Routines ****************************************************** */ -int -des_read_password(k,prompt,verify) - des_cblock *k; - char *prompt; - int verify; -{ - int ok; - char key_string[BUFSIZ]; - -#ifdef POSIX - if (sigsetjmp(env, 1)) { - ok = -1; - goto lose; - } -#else - if (setjmp(env)) { - ok = -1; - goto lose; - } -#endif - - ok = des_read_pw_string(key_string, BUFSIZ, prompt, verify); - if (ok == 0) - des_string_to_key(key_string, k); - -lose: - memset(key_string, 0, sizeof (key_string)); - return ok; -} - -/* - * This version just returns the string, doesn't map to key. - * - * Returns 0 on success, non-zero on failure. - */ - -int -des_read_pw_string(s,max,prompt,verify) - char *s; - int max; - char *prompt; - int verify; -{ - int ok = 0; - char *ptr; - char key_string[BUFSIZ]; -#ifdef POSIX - sigjmp_buf old_env; - struct termios tty_state; -#else - jmp_buf old_env; - struct sgttyb tty_state; -#endif - - if (max > BUFSIZ) { - return -1; - } - -#ifdef POSIX - /* save terminal state */ - if (tcgetattr(0, &tty_state) == -1) - return -1; - /* Turn off echo */ - tty_state.c_lflag &= ~ECHO; - if (tcsetattr(0, TCSANOW, &tty_state) == -1) - return -1; - - memcpy((char *)env, (char *)old_env, sizeof(env)); - if (sigsetjmp(env, 1)) - goto lose; -#else - /* save terminal state*/ - if (ioctl(0,TIOCGETP,(char *)&tty_state) == -1) - return -1; - /* Turn off echo */ - tty_state.sg_flags &= ~ECHO; - if (ioctl(0,TIOCSETP,(char *)&tty_state) == -1) - return -1; - memcpy((char *)env, (char *)old_env, sizeof(env)); - if (setjmp(env)) - goto lose; -#endif - push_signals(); - - while (!ok) { - (void) printf(prompt); - (void) fflush(stdout); -#ifdef CROSSMSDOS - h19line(s,sizeof(s),0); - if (!strlen(s)) - continue; -#else - if (!fgets(s, max, stdin)) { - clearerr(stdin); - continue; - } - if ((ptr = strchr(s, '\n'))) - *ptr = '\0'; -#endif - if (verify) { - printf("\nVerifying, please re-enter %s",prompt); - (void) fflush(stdout); -#ifdef CROSSMSDOS - h19line(key_string,sizeof(key_string),0); - if (!strlen(key_string)) - continue; -#else - if (!fgets(key_string, sizeof(key_string), stdin)) { - clearerr(stdin); - continue; - } - if ((ptr = strchr(key_string, '\n'))) - *ptr = '\0'; -#endif - if (strcmp(s,key_string)) { - printf("\n\07\07Mismatch - try again\n"); - (void) fflush(stdout); - continue; - } - } - ok = 1; - } - -lose: - if (!ok) - memset(s, 0, max); - printf("\n"); -#ifdef POSIX - /* turn echo back on */ - tty_state.c_lflag |= ECHO; - if (tcsetattr(0, TCSANOW, &tty_state)) - ok = 0; -#else - /* turn echo back on */ - tty_state.sg_flags |= ECHO; - if (ioctl(0,TIOCSETP,(char *)&tty_state)) - ok = 0; -#endif - pop_signals(); - memcpy((char *)old_env, (char *)env, sizeof(env)); - - if (verify) - memset(key_string, 0, sizeof (key_string)); - s[max-1] = 0; /* force termination */ - return !ok; /* return nonzero if not okay */ -} - -#ifdef POSIX -/* This can be static since we should never have more than one set saved... */ -static struct sigaction osa[NSIG]; - -static push_signals() -{ - register int i; - struct sigaction nsa; - - sigemptyset(&nsa.sa_mask); - nsa.sa_flags = 0; - nsa.sa_handler = sig_restore; - - for (i=0; i<NSIG; i++) - sigaction(i, &nsa, &osa[i]); -} - -static pop_signals() -{ - register int i; - for (i=0; i<NSIG; i++) - sigaction(i, &osa[i], (struct sigaction *)0); -} - -static sigtype sig_restore() -{ - siglongjmp(env, 1); -} - -#else /* !POSIX */ - -/* This can be static since we should never have more than one set saved... */ -static sigtype (*old_sigfunc[NSIG])(); - -static push_signals() -{ - register int i; - for (i = 0; i < NSIG; i++) - old_sigfunc[i] = signal(i,sig_restore); -} - -static pop_signals() -{ - register int i; - for (i = 0; i < NSIG; i++) - (void) signal(i,old_sigfunc[i]); -} - -static sigtype -sig_restore() -{ - longjmp(env,1); -} - -#endif /* POSIX */ |