vfs/samba/libsmb/pwd_cache.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 1.9.
   4    Password cacheing.  obfuscation is planned
   5    Copyright (C) Luke Kenneth Casson Leighton 1996-1998
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  20 */
  21
  22 #include "includes.h"
  23
  24 extern int DEBUGLEVEL;
  25
  26
  27 /****************************************************************************
  28 initialises a password structure
  29 ****************************************************************************/
  30 void pwd_init(struct pwd_info *pwd)
  31 {
  32         memset((char *)pwd->password  , '\0', sizeof(pwd->password  ));
  33         memset((char *)pwd->smb_lm_pwd, '\0', sizeof(pwd->smb_lm_pwd));
  34         memset((char *)pwd->smb_nt_pwd, '\0', sizeof(pwd->smb_nt_pwd));
  35         memset((char *)pwd->smb_lm_owf, '\0', sizeof(pwd->smb_lm_owf));
  36         memset((char *)pwd->smb_nt_owf, '\0', sizeof(pwd->smb_nt_owf));
  37
  38         pwd->null_pwd  = True; /* safest option... */
  39         pwd->cleartext = False;
  40         pwd->crypted   = False;
  41 }
  42
  43 /****************************************************************************
  44 de-obfuscates a password
  45 ****************************************************************************/
  46 static void pwd_deobfuscate(struct pwd_info *pwd)
  47 {
  48     (void) pwd;
  49 }
  50
  51 /****************************************************************************
  52 obfuscates a password
  53 ****************************************************************************/
  54 static void pwd_obfuscate(struct pwd_info *pwd)
  55 {
  56     (void) pwd;
  57 }
  58
  59 /****************************************************************************
  60 sets the obfuscation key info
  61 ****************************************************************************/
  62 void pwd_obfuscate_key(struct pwd_info *pwd, uint32 int_key, char *str_key)
  63 {
  64     (void) pwd;
  65     (void) int_key;
  66     (void) str_key;
  67 }
  68
  69 #if 0
  70 /****************************************************************************
  71 reads a password
  72 ****************************************************************************/
  73 void pwd_read(struct pwd_info *pwd, char *passwd_report, BOOL do_encrypt)
  74 {
  75         /* grab a password */
  76         char *user_pass;
  77
  78         pwd_init(pwd);
  79
  80         user_pass = (char*)getpass(passwd_report);
  81
  82         if (user_pass == NULL || user_pass[0] == 0)
  83         {
  84                 pwd_set_nullpwd(pwd);
  85         }
  86         else if (do_encrypt)
  87         {
  88                 pwd_make_lm_nt_16(pwd, user_pass);
  89         }
  90         else
  91         {
  92                 pwd_set_cleartext(pwd, user_pass);
  93         }
  94 }
  95 #endif
  96
  97 /****************************************************************************
  98  stores a cleartext password
  99  ****************************************************************************/
 100 void pwd_set_nullpwd(struct pwd_info *pwd)
 101 {
 102         pwd_init(pwd);
 103
 104         pwd->cleartext = False;
 105         pwd->null_pwd  = True;
 106         pwd->crypted   = False;
 107 }
 108
 109 /****************************************************************************
 110  stores a cleartext password
 111  ****************************************************************************/
 112 void pwd_set_cleartext(struct pwd_info *pwd, char *clr)
 113 {
 114         pwd_init(pwd);
 115         fstrcpy(pwd->password, clr);
 116         pwd->cleartext = True;
 117         pwd->null_pwd  = False;
 118         pwd->crypted   = False;
 119
 120         pwd_obfuscate(pwd);
 121 }
 122
 123 /****************************************************************************
 124  gets a cleartext password
 125  ****************************************************************************/
 126 void pwd_get_cleartext(struct pwd_info *pwd, char *clr)
 127 {
 128         pwd_deobfuscate(pwd);
 129         if (pwd->cleartext)
 130         {
 131                 fstrcpy(clr, pwd->password);
 132         }
 133         else
 134         {
 135                 clr[0] = 0;
 136         }
 137         pwd_obfuscate(pwd);
 138 }
 139
 140 /****************************************************************************
 141  stores lm and nt hashed passwords
 142  ****************************************************************************/
 143 void pwd_set_lm_nt_16(struct pwd_info *pwd, uchar lm_pwd[16], uchar nt_pwd[16])
 144 {
 145         pwd_init(pwd);
 146
 147         if (lm_pwd)
 148         {
 149                 memcpy(pwd->smb_lm_pwd, lm_pwd, 16);
 150         }
 151         else
 152         {
 153                 memset((char *)pwd->smb_lm_pwd, '\0', 16);
 154         }
 155
 156         if (nt_pwd)
 157         {
 158                 memcpy(pwd->smb_nt_pwd, nt_pwd, 16);
 159         }
 160         else
 161         {
 162                 memset((char *)pwd->smb_nt_pwd, '\0', 16);
 163         }
 164
 165         pwd->null_pwd  = False;
 166         pwd->cleartext = False;
 167         pwd->crypted   = False;
 168
 169         pwd_obfuscate(pwd);
 170 }
 171
 172 /****************************************************************************
 173  gets lm and nt hashed passwords
 174  ****************************************************************************/
 175 void pwd_get_lm_nt_16(struct pwd_info *pwd, uchar lm_pwd[16], uchar nt_pwd[16])
 176 {
 177         pwd_deobfuscate(pwd);
 178         if (lm_pwd != NULL)
 179         {
 180                 memcpy(lm_pwd, pwd->smb_lm_pwd, 16);
 181         }
 182         if (nt_pwd != NULL)
 183         {
 184                 memcpy(nt_pwd, pwd->smb_nt_pwd, 16);
 185         }
 186         pwd_obfuscate(pwd);
 187 }
 188
 189 /****************************************************************************
 190  makes lm and nt hashed passwords
 191  ****************************************************************************/
 192 void pwd_make_lm_nt_16(struct pwd_info *pwd, char *clr)
 193 {
 194         pwd_init(pwd);
 195
 196         nt_lm_owf_gen(clr, pwd->smb_nt_pwd, pwd->smb_lm_pwd);
 197         pwd->null_pwd  = False;
 198         pwd->cleartext = False;
 199         pwd->crypted = False;
 200
 201         pwd_obfuscate(pwd);
 202 }
 203
 204 /****************************************************************************
 205  makes lm and nt OWF crypts
 206  ****************************************************************************/
 207 void pwd_make_lm_nt_owf(struct pwd_info *pwd, uchar cryptkey[8])
 208 {
 209         pwd_deobfuscate(pwd);
 210
 211 #ifdef DEBUG_PASSWORD
 212         DEBUG(100,("client cryptkey: "));
 213         dump_data(100, (char *)cryptkey, 8);
 214 #endif
 215
 216         SMBOWFencrypt(pwd->smb_nt_pwd, cryptkey, pwd->smb_nt_owf);
 217
 218 #ifdef DEBUG_PASSWORD
 219         DEBUG(100,("nt_owf_passwd: "));
 220         dump_data(100, (char *)pwd->smb_nt_owf, sizeof(pwd->smb_nt_owf));
 221         DEBUG(100,("nt_sess_pwd: "));
 222         dump_data(100, (char *)pwd->smb_nt_pwd, sizeof(pwd->smb_nt_pwd));
 223 #endif
 224
 225         SMBOWFencrypt(pwd->smb_lm_pwd, cryptkey, pwd->smb_lm_owf);
 226
 227 #ifdef DEBUG_PASSWORD
 228         DEBUG(100,("lm_owf_passwd: "));
 229         dump_data(100, (char *)pwd->smb_lm_owf, sizeof(pwd->smb_lm_owf));
 230         DEBUG(100,("lm_sess_pwd: "));
 231         dump_data(100, (char *)pwd->smb_lm_pwd, sizeof(pwd->smb_lm_pwd));
 232 #endif
 233
 234         pwd->crypted = True;
 235
 236         pwd_obfuscate(pwd);
 237 }
 238
 239 /****************************************************************************
 240  gets lm and nt crypts
 241  ****************************************************************************/
 242 void pwd_get_lm_nt_owf(struct pwd_info *pwd, uchar lm_owf[24], uchar nt_owf[24])
 243 {
 244         pwd_deobfuscate(pwd);
 245         if (lm_owf != NULL)
 246         {
 247                 memcpy(lm_owf, pwd->smb_lm_owf, 24);
 248         }
 249         if (nt_owf != NULL)
 250         {
 251                 memcpy(nt_owf, pwd->smb_nt_owf, 24);
 252         }
 253         pwd_obfuscate(pwd);
 254 }