source/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., 675 Mass Ave, Cambridge, MA 02139, 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         bzero(pwd->password  , sizeof(pwd->password  ));
  33         bzero(pwd->smb_lm_pwd, sizeof(pwd->smb_lm_pwd));
  34         bzero(pwd->smb_nt_pwd, sizeof(pwd->smb_nt_pwd));
  35         bzero(pwd->smb_lm_owf, sizeof(pwd->smb_lm_owf));
  36         bzero(pwd->smb_nt_owf, sizeof(pwd->smb_nt_owf));
  37         pwd->nt_owf_len = 0;
  38
  39         pwd->null_pwd  = True; /* safest option... */
  40         pwd->cleartext = False;
  41         pwd->crypted   = False;
  42 }
  43
  44 /****************************************************************************
  45 de-obfuscates a password
  46 ****************************************************************************/
  47 static void pwd_deobfuscate(struct pwd_info *pwd)
  48 {
  49 }
  50
  51 /****************************************************************************
  52 obfuscates a password
  53 ****************************************************************************/
  54 static void pwd_obfuscate(struct pwd_info *pwd)
  55 {
  56 }
  57
  58 /****************************************************************************
  59 sets the obfuscation key info
  60 ****************************************************************************/
  61 void pwd_obfuscate_key(struct pwd_info *pwd, uint32 int_key, char *str_key)
  62 {
  63 }
  64
  65 /****************************************************************************
  66 reads a password
  67 ****************************************************************************/
  68 void pwd_read(struct pwd_info *pwd, char *passwd_report, BOOL do_encrypt)
  69 {
  70         /* grab a password */
  71         char *user_pass;
  72
  73         pwd_init(pwd);
  74
  75         user_pass = (char*)getpass(passwd_report);
  76
  77         if (user_pass == NULL || user_pass[0] == 0)
  78         {
  79                 pwd_set_nullpwd(pwd);
  80         }
  81         else if (do_encrypt)
  82         {
  83                 pwd_make_lm_nt_16(pwd, user_pass);
  84         }
  85         else
  86         {
  87                 pwd_set_cleartext(pwd, user_pass);
  88         }
  89 }
  90
  91 /****************************************************************************
  92  stores a cleartext password
  93  ****************************************************************************/
  94 void pwd_set_nullpwd(struct pwd_info *pwd)
  95 {
  96         pwd_init(pwd);
  97
  98         pwd->cleartext = False;
  99         pwd->null_pwd  = True;
 100         pwd->crypted   = False;
 101 }
 102
 103 /****************************************************************************
 104  stores a cleartext password
 105  ****************************************************************************/
 106 void pwd_set_cleartext(struct pwd_info *pwd, char *clr)
 107 {
 108         pwd_init(pwd);
 109         fstrcpy(pwd->password, clr);
 110         pwd->cleartext = True;
 111         pwd->null_pwd  = False;
 112         pwd->crypted   = False;
 113
 114         pwd_obfuscate(pwd);
 115 }
 116
 117 /****************************************************************************
 118  gets a cleartext password
 119  ****************************************************************************/
 120 void pwd_get_cleartext(struct pwd_info *pwd, char *clr)
 121 {
 122         pwd_deobfuscate(pwd);
 123         if (pwd->cleartext)
 124         {
 125                 fstrcpy(clr, pwd->password);
 126         }
 127         else
 128         {
 129                 clr[0] = 0;
 130         }
 131         pwd_obfuscate(pwd);
 132 }
 133
 134 /****************************************************************************
 135  stores lm and nt hashed passwords
 136  ****************************************************************************/
 137 void pwd_set_lm_nt_16(struct pwd_info *pwd, uchar lm_pwd[16], uchar nt_pwd[16])
 138 {
 139         pwd_init(pwd);
 140
 141         if (lm_pwd)
 142         {
 143                 memcpy(pwd->smb_lm_pwd, lm_pwd, 16);
 144         }
 145         else
 146         {
 147                 bzero(pwd->smb_lm_pwd, 16);
 148         }
 149
 150         if (nt_pwd)
 151         {
 152                 memcpy(pwd->smb_nt_pwd, nt_pwd, 16);
 153         }
 154         else
 155         {
 156                 bzero(pwd->smb_nt_pwd, 16);
 157         }
 158
 159         pwd->null_pwd  = False;
 160         pwd->cleartext = False;
 161         pwd->crypted   = False;
 162
 163         pwd_obfuscate(pwd);
 164 }
 165
 166 /****************************************************************************
 167  gets lm and nt hashed passwords
 168  ****************************************************************************/
 169 void pwd_get_lm_nt_16(struct pwd_info *pwd, uchar lm_pwd[16], uchar nt_pwd[16])
 170 {
 171         pwd_deobfuscate(pwd);
 172         if (lm_pwd != NULL)
 173         {
 174                 memcpy(lm_pwd, pwd->smb_lm_pwd, 16);
 175         }
 176         if (nt_pwd != NULL)
 177         {
 178                 memcpy(nt_pwd, pwd->smb_nt_pwd, 16);
 179         }
 180         pwd_obfuscate(pwd);
 181 }
 182
 183 /****************************************************************************
 184  makes lm and nt hashed passwords
 185  ****************************************************************************/
 186 void pwd_make_lm_nt_16(struct pwd_info *pwd, char *clr)
 187 {
 188         pwd_init(pwd);
 189
 190         nt_lm_owf_gen(clr, pwd->smb_nt_pwd, pwd->smb_lm_pwd);
 191         pwd->null_pwd  = False;
 192         pwd->cleartext = False;
 193         pwd->crypted = False;
 194
 195         pwd_obfuscate(pwd);
 196 }
 197
 198 /****************************************************************************
 199  makes lm and nt OWF crypts
 200  ****************************************************************************/
 201 void pwd_make_lm_nt_owf2(struct pwd_info *pwd, const uchar srv_key[8],
 202                 const char *user, const char *server, const char *domain)
 203 {
 204         uchar kr[16];
 205
 206         DEBUG(10,("pwd_make_lm_nt_owf2: user %s, srv %s, dom %s\n",
 207                 user, server, domain));
 208
 209         pwd_deobfuscate(pwd);
 210
 211         SMBgenclientchals(pwd->lm_cli_chal,
 212                           pwd->nt_cli_chal,
 213                           &pwd->nt_cli_chal_len,
 214                           server, domain);
 215
 216         ntv2_owf_gen(pwd->smb_nt_pwd, user, domain, kr);
 217
 218         /* lm # */
 219         SMBOWFencrypt_ntv2(kr,
 220                            srv_key, 8,
 221                            pwd->lm_cli_chal, 8,
 222                            pwd->smb_lm_owf);
 223         memcpy(&pwd->smb_lm_owf[16], pwd->lm_cli_chal, 8);
 224
 225         /* nt # */
 226         SMBOWFencrypt_ntv2(kr,
 227                        srv_key, 8,
 228                        pwd->nt_cli_chal, pwd->nt_cli_chal_len,
 229                        pwd->smb_nt_owf);
 230         memcpy(&pwd->smb_nt_owf[16], pwd->nt_cli_chal, pwd->nt_cli_chal_len);
 231         pwd->nt_owf_len = pwd->nt_cli_chal_len + 16;
 232
 233 #ifdef DEBUG_PASSWORD
 234         DEBUG(100,("server cryptkey: "));
 235         dump_data(100, srv_key, 8);
 236
 237         DEBUG(100,("client lmv2 cryptkey: "));
 238         dump_data(100, pwd->lm_cli_chal, 8);
 239
 240         DEBUG(100,("client ntv2 cryptkey: "));
 241         dump_data(100, pwd->nt_cli_chal, pwd->nt_cli_chal_len);
 242
 243         DEBUG(100,("ntv2_owf_passwd: "));
 244         dump_data(100, pwd->smb_nt_owf, pwd->nt_owf_len);
 245         DEBUG(100,("nt_sess_pwd: "));
 246         dump_data(100, pwd->smb_nt_pwd, sizeof(pwd->smb_nt_pwd));
 247
 248         DEBUG(100,("lmv2_owf_passwd: "));
 249         dump_data(100, pwd->smb_lm_owf, sizeof(pwd->smb_lm_owf));
 250         DEBUG(100,("lm_sess_pwd: "));
 251         dump_data(100, pwd->smb_lm_pwd, sizeof(pwd->smb_lm_pwd));
 252 #endif
 253         pwd->crypted = True;
 254
 255         pwd_obfuscate(pwd);
 256 }
 257
 258 /****************************************************************************
 259  makes lm and nt OWF crypts
 260  ****************************************************************************/
 261 void pwd_make_lm_nt_owf(struct pwd_info *pwd, uchar cryptkey[8])
 262 {
 263         if (pwd->null_pwd)
 264         {
 265 #ifdef DEBUG_PASSWORD
 266                 DEBUG(100,("pwd_make_lm_nt_owf: NULL password\n"));
 267 #endif
 268                 pwd->nt_owf_len = 0;
 269                 return;
 270         }
 271         pwd_deobfuscate(pwd);
 272
 273         SMBOWFencrypt(pwd->smb_lm_pwd, cryptkey, pwd->smb_lm_owf);
 274         SMBOWFencrypt(pwd->smb_nt_pwd, cryptkey, pwd->smb_nt_owf);
 275         pwd->nt_owf_len = 24;
 276
 277 #ifdef DEBUG_PASSWORD
 278         DEBUG(100,("client cryptkey: "));
 279         dump_data(100, cryptkey, 8);
 280
 281         DEBUG(100,("nt_owf_passwd: "));
 282         dump_data(100, pwd->smb_nt_owf, pwd->nt_owf_len);
 283         DEBUG(100,("nt_sess_pwd: "));
 284         dump_data(100, pwd->smb_nt_pwd, sizeof(pwd->smb_nt_pwd));
 285
 286         DEBUG(100,("lm_owf_passwd: "));
 287         dump_data(100, pwd->smb_lm_owf, sizeof(pwd->smb_lm_owf));
 288         DEBUG(100,("lm_sess_pwd: "));
 289         dump_data(100, pwd->smb_lm_pwd, sizeof(pwd->smb_lm_pwd));
 290 #endif
 291
 292         pwd->crypted = True;
 293
 294         pwd_obfuscate(pwd);
 295 }
 296
 297 /****************************************************************************
 298  gets lm and nt crypts
 299  ****************************************************************************/
 300 void pwd_get_lm_nt_owf(struct pwd_info *pwd, uchar lm_owf[24],
 301                                 uchar *nt_owf, size_t *nt_owf_len)
 302 {
 303         if (pwd->null_pwd)
 304         {
 305 #ifdef DEBUG_PASSWORD
 306                 DEBUG(100,("pwd_get_lm_nt_owf: NULL password\n"));
 307 #endif
 308                 if (nt_owf_len != NULL)
 309                 {
 310                         *nt_owf_len = 0;
 311                 }
 312                 return;
 313         }
 314
 315         pwd_deobfuscate(pwd);
 316         if (lm_owf != NULL)
 317         {
 318                 memcpy(lm_owf, pwd->smb_lm_owf, 24);
 319         }
 320         if (nt_owf != NULL)
 321         {
 322                 memcpy(nt_owf, pwd->smb_nt_owf, pwd->nt_owf_len);
 323         }
 324         if (nt_owf_len != NULL)
 325         {
 326                 *nt_owf_len = pwd->nt_owf_len;
 327         }
 328         pwd_obfuscate(pwd);
 329 }
 330