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/*
* lib/des425/read_passwd.c
*
* Copyright 1985,1986,1987,1988,1991 by the Massachusetts Institute
* of Technology.
* All Rights Reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original M.I.T. software.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
*
* This routine prints the supplied string to standard
* output as a prompt, and reads a password string without
* echoing.
*/
#if !defined(_WIN32)
#include "des_int.h"
#include "des.h"
#include <stdio.h>
#include <errno.h>
#include <krb5.h>
/* This is re-declared here because des.h might not declare it. */
int KRB5_CALLCONV des_read_pw_string(char *, int, char *, int);
static int des_rd_pwstr_2prompt(char *, int, char *, char *);
/*** Routines ****************************************************** */
static int
des_rd_pwstr_2prompt(return_pwd, bufsize_in, prompt, prompt2)
char *return_pwd;
int bufsize_in;
char *prompt;
char *prompt2;
{
krb5_data reply_data;
krb5_prompt k5prompt;
krb5_error_code retval;
reply_data.length = bufsize_in;
reply_data.data = return_pwd;
k5prompt.prompt = prompt;
k5prompt.hidden = 1;
k5prompt.reply = &reply_data;
retval = krb5_prompter_posix(NULL,
NULL, NULL, NULL, 1, &k5prompt);
if ((retval==0) && prompt2) {
krb5_data verify_data;
verify_data.data = malloc(bufsize_in);
verify_data.length = bufsize_in;
k5prompt.prompt = prompt2;
k5prompt.reply = &verify_data;
if (!verify_data.data)
return ENOMEM;
retval = krb5_prompter_posix(NULL,
NULL,NULL, NULL, 1, &k5prompt);
if (retval) {
free(verify_data.data);
} else {
/* compare */
if (strncmp(return_pwd, (char *)verify_data.data, bufsize_in)) {
retval = KRB5_LIBOS_BADPWDMATCH;
free(verify_data.data);
}
}
}
return retval;
}
int KRB5_CALLCONV
des_read_password(k,prompt,verify)
mit_des_cblock *k;
char *prompt;
int verify;
{
int ok;
char key_string[BUFSIZ];
ok = des_read_pw_string(key_string, sizeof(key_string), prompt, verify);
if (ok == 0)
des_string_to_key(key_string, *k);
memset(key_string, 0, sizeof (key_string));
return ok;
}
/* Note: this function is exported on KfM. Do not change its ABI. */
int KRB5_CALLCONV
des_read_pw_string(s, max, prompt, verify)
char *s;
int max;
char *prompt;
int verify;
{
int ok;
char prompt2[BUFSIZ];
if (verify) {
strcpy(prompt2, "Verifying, please re-enter ");
strncat(prompt2, prompt, sizeof(prompt2)-(strlen(prompt2)+1));
prompt2[sizeof(prompt2)-1] = '\0';
}
ok = des_rd_pwstr_2prompt(s, max, prompt, verify ? prompt2 : 0);
return ok;
}
#else /* !unix */
/*
* These are all just dummy functions to make the rest of the library happy...
*/
#endif /* _WINDOWS */
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