source3/utils/passwd_util.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    passdb editing frontend
   4
   5    Copyright (C) Jeremy Allison  1998
   6    Copyright (C) Andrew Tridgell 1998
   7    Copyright (C) Tim Potter      2000
   8    Copyright (C) Simo Sorce      2000
   9    Copyright (C) Martin Pool     2001
  10    Copyright (C) Gerald Carter   2002
  11    Copyright (C) Andrew Bartlett 2003
  12
  13    This program is free software; you can redistribute it and/or modify
  14    it under the terms of the GNU General Public License as published by
  15    the Free Software Foundation; either version 3 of the License, or
  16    (at your option) any later version.
  17
  18    This program is distributed in the hope that it will be useful,
  19    but WITHOUT ANY WARRANTY; without even the implied warranty of
  20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21    GNU General Public License for more details.
  22
  23    You should have received a copy of the GNU General Public License
  24    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  25 */
  26
  27 #include "includes.h"
  28
  29 /*************************************************************
  30  Utility function to prompt for passwords from stdin. Each
  31  password entered must end with a newline.
  32 *************************************************************/
  33 char *stdin_new_passwd( void)
  34 {
  35         static fstring new_pw;
  36         size_t len;
  37
  38         ZERO_ARRAY(new_pw);
  39
  40         /*
  41          * if no error is reported from fgets() and string at least contains
  42          * the newline that ends the password, then replace the newline with
  43          * a null terminator.
  44          */
  45         if ( fgets(new_pw, sizeof(new_pw), stdin) == NULL) {
  46                 return NULL;
  47         }
  48         if ((len = strlen(new_pw)) > 0) {
  49                 if(new_pw[len-1] == '\n')
  50                         new_pw[len - 1] = 0;
  51         }
  52         return(new_pw);
  53 }
  54
  55 /*************************************************************
  56  Utility function to get passwords via tty or stdin
  57  Used if the '-s' (smbpasswd) or '-t' (pdbedit) option is set
  58  to silently get passwords to enable scripting.
  59 *************************************************************/
  60 char *get_pass( const char *prompt, bool stdin_get)
  61 {
  62         char pwd[256] = {0};
  63         char *p;
  64         int rc;
  65
  66         if (stdin_get) {
  67                 p = stdin_new_passwd();
  68                 if (p == NULL) {
  69                         return NULL;
  70                 }
  71         } else {
  72                 rc = samba_getpass(prompt, pwd, sizeof(pwd), false, false);
  73                 if (rc < 0) {
  74                         return NULL;
  75                 }
  76                 p = pwd;
  77         }
  78         return smb_xstrdup( p);
  79 }