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Annotation of 43BSDReno/kerberosIV/des/read_password.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * $Source: /usr/src/kerberosIV/des/RCS/read_password.c,v $
        !             3:  * $Author: kfall $
        !             4:  *
        !             5:  * Copyright 1985, 1986, 1987, 1988 by the Massachusetts Institute
        !             6:  * of Technology.
        !             7:  *
        !             8:  * For copying and distribution information, please see the file
        !             9:  * <mit-copyright.h>.
        !            10:  *
        !            11:  * This routine prints the supplied string to standard
        !            12:  * output as a prompt, and reads a password string without
        !            13:  * echoing.
        !            14:  */
        !            15: 
        !            16: #ifndef        lint
        !            17: static char rcsid_read_password_c[] =
        !            18: "$Header: /usr/src/kerberosIV/des/RCS/read_password.c,v 4.13 90/06/23 03:09:35 kfall Exp $";
        !            19: #endif lint
        !            20: 
        !            21: #include <sys/param.h>
        !            22: #include <stdio.h>
        !            23: #include <string.h>
        !            24: #include <setjmp.h>
        !            25: #include <pwd.h>
        !            26: #include <mit-copyright.h>
        !            27: #include <des.h>
        !            28: #include "conf.h"
        !            29: 
        !            30: extern char    *getpass();
        !            31: 
        !            32: #ifdef BSDUNIX
        !            33: static jmp_buf env;
        !            34: #endif
        !            35: 
        !            36: int
        !            37: des_read_password(k, prompt, verify)
        !            38:        des_cblock *k;
        !            39:        char *prompt;
        !            40:        int verify;
        !            41: {
        !            42:        int ok;
        !            43:        char key_string[_PASSWORD_LEN];
        !            44: 
        !            45: #ifdef BSDUNIX
        !            46:        if (setjmp(env)) {
        !            47:                ok = -1;
        !            48:                goto lose;
        !            49:        }
        !            50: #endif
        !            51: 
        !            52:        ok = des_read_pw_string(key_string, _PASSWORD_LEN, prompt, verify);
        !            53:        if (ok == 0)
        !            54:                des_string_to_key(key_string, k);
        !            55: 
        !            56: lose:
        !            57:        bzero(key_string, sizeof (key_string));
        !            58:        return ok;
        !            59: }
        !            60: 
        !            61: /*
        !            62:  * This version just returns the string, doesn't map to key.
        !            63:  *
        !            64:  * Returns 0 on success, non-zero on failure.
        !            65:  */
        !            66: 
        !            67: int
        !            68: des_read_pw_string(s, max, prompt, verify)
        !            69:        char *s;
        !            70:        int max;
        !            71:        char *prompt;
        !            72:        int verify;
        !            73: {
        !            74:        register int len = MIN(_PASSWORD_LEN, max);
        !            75:        char    *ptr = getpass(prompt);
        !            76: 
        !            77:        (void)strncpy(s, ptr, len);
        !            78:        if (verify) {
        !            79:                while (strncmp(getpass(prompt), s, len) != 0) {
        !            80:                        printf("\n\07\07Mismatch - try again\n");
        !            81:                        (void)fflush(stdout);
        !            82:                        continue;
        !            83:                }
        !            84:        }
        !            85:        s[len-1] = '\0';        /* just in case */
        !            86:        return 0;
        !            87: }

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