source3/rpc_client/cli_samr.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    RPC pipe client
   4    Copyright (C) Tim Potter                        2000-2001,
   5    Copyright (C) Andrew Tridgell              1992-1997,2000,
   6    Copyright (C) Rafal Szczesniak                       2002.
   7    Copyright (C) Jeremy Allison                         2005.
   8    Copyright (C) Guenther Deschner                      2008.
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 3 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22 */
  23
  24 #include "includes.h"
  25 #include "../libcli/auth/libcli_auth.h"
  26 #include "../librpc/gen_ndr/cli_samr.h"
  27 #include "rpc_client/cli_samr.h"
  28 #include "../lib/crypto/arcfour.h"
  29 #include "rpc_client/init_lsa.h"
  30
  31 /* User change password */
  32
  33 NTSTATUS rpccli_samr_chgpasswd_user(struct rpc_pipe_client *cli,
  34                                     TALLOC_CTX *mem_ctx,
  35                                     struct policy_handle *user_handle,
  36                                     const char *newpassword,
  37                                     const char *oldpassword)
  38 {
  39         NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
  40         struct samr_Password hash1, hash2, hash3, hash4, hash5, hash6;
  41
  42         uchar old_nt_hash[16];
  43         uchar old_lm_hash[16];
  44         uchar new_nt_hash[16];
  45         uchar new_lm_hash[16];
  46
  47         ZERO_STRUCT(old_nt_hash);
  48         ZERO_STRUCT(old_lm_hash);
  49         ZERO_STRUCT(new_nt_hash);
  50         ZERO_STRUCT(new_lm_hash);
  51
  52         DEBUG(10,("rpccli_samr_chgpasswd_user\n"));
  53
  54         E_md4hash(oldpassword, old_nt_hash);
  55         E_md4hash(newpassword, new_nt_hash);
  56
  57         E_deshash(oldpassword, old_lm_hash);
  58         E_deshash(newpassword, new_lm_hash);
  59
  60         E_old_pw_hash(new_lm_hash, old_lm_hash, hash1.hash);
  61         E_old_pw_hash(old_lm_hash, new_lm_hash, hash2.hash);
  62         E_old_pw_hash(new_nt_hash, old_nt_hash, hash3.hash);
  63         E_old_pw_hash(old_nt_hash, new_nt_hash, hash4.hash);
  64         E_old_pw_hash(old_lm_hash, new_nt_hash, hash5.hash);
  65         E_old_pw_hash(old_nt_hash, new_lm_hash, hash6.hash);
  66
  67         result = rpccli_samr_ChangePasswordUser(cli, mem_ctx,
  68                                                 user_handle,
  69                                                 true,
  70                                                 &hash1,
  71                                                 &hash2,
  72                                                 true,
  73                                                 &hash3,
  74                                                 &hash4,
  75                                                 true,
  76                                                 &hash5,
  77                                                 true,
  78                                                 &hash6);
  79
  80         return result;
  81 }
  82
  83
  84 /* User change password */
  85
  86 NTSTATUS rpccli_samr_chgpasswd_user2(struct rpc_pipe_client *cli,
  87                                      TALLOC_CTX *mem_ctx,
  88                                      const char *username,
  89                                      const char *newpassword,
  90                                      const char *oldpassword)
  91 {
  92         NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
  93         struct samr_CryptPassword new_nt_password;
  94         struct samr_CryptPassword new_lm_password;
  95         struct samr_Password old_nt_hash_enc;
  96         struct samr_Password old_lanman_hash_enc;
  97
  98         uchar old_nt_hash[16];
  99         uchar old_lanman_hash[16];
 100         uchar new_nt_hash[16];
 101         uchar new_lanman_hash[16];
 102         struct lsa_String server, account;
 103
 104         DEBUG(10,("rpccli_samr_chgpasswd_user2\n"));
 105
 106         init_lsa_String(&server, cli->srv_name_slash);
 107         init_lsa_String(&account, username);
 108
 109         /* Calculate the MD4 hash (NT compatible) of the password */
 110         E_md4hash(oldpassword, old_nt_hash);
 111         E_md4hash(newpassword, new_nt_hash);
 112
 113         if (lp_client_lanman_auth() &&
 114             E_deshash(newpassword, new_lanman_hash) &&
 115             E_deshash(oldpassword, old_lanman_hash)) {
 116                 /* E_deshash returns false for 'long' passwords (> 14
 117                    DOS chars).  This allows us to match Win2k, which
 118                    does not store a LM hash for these passwords (which
 119                    would reduce the effective password length to 14) */
 120
 121                 encode_pw_buffer(new_lm_password.data, newpassword, STR_UNICODE);
 122
 123                 arcfour_crypt(new_lm_password.data, old_nt_hash, 516);
 124                 E_old_pw_hash(new_nt_hash, old_lanman_hash, old_lanman_hash_enc.hash);
 125         } else {
 126                 ZERO_STRUCT(new_lm_password);
 127                 ZERO_STRUCT(old_lanman_hash_enc);
 128         }
 129
 130         encode_pw_buffer(new_nt_password.data, newpassword, STR_UNICODE);
 131
 132         arcfour_crypt(new_nt_password.data, old_nt_hash, 516);
 133         E_old_pw_hash(new_nt_hash, old_nt_hash, old_nt_hash_enc.hash);
 134
 135         result = rpccli_samr_ChangePasswordUser2(cli, mem_ctx,
 136                                                  &server,
 137                                                  &account,
 138                                                  &new_nt_password,
 139                                                  &old_nt_hash_enc,
 140                                                  true,
 141                                                  &new_lm_password,
 142                                                  &old_lanman_hash_enc);
 143
 144         return result;
 145 }
 146
 147 /* User change password given blobs */
 148
 149 NTSTATUS rpccli_samr_chng_pswd_auth_crap(struct rpc_pipe_client *cli,
 150                                          TALLOC_CTX *mem_ctx,
 151                                          const char *username,
 152                                          DATA_BLOB new_nt_password_blob,
 153                                          DATA_BLOB old_nt_hash_enc_blob,
 154                                          DATA_BLOB new_lm_password_blob,
 155                                          DATA_BLOB old_lm_hash_enc_blob)
 156 {
 157         NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
 158         struct samr_CryptPassword new_nt_password;
 159         struct samr_CryptPassword new_lm_password;
 160         struct samr_Password old_nt_hash_enc;
 161         struct samr_Password old_lm_hash_enc;
 162         struct lsa_String server, account;
 163
 164         DEBUG(10,("rpccli_samr_chng_pswd_auth_crap\n"));
 165
 166         init_lsa_String(&server, cli->srv_name_slash);
 167         init_lsa_String(&account, username);
 168
 169         if (new_nt_password_blob.length > 0) {
 170                 memcpy(&new_nt_password.data, new_nt_password_blob.data, 516);
 171         } else {
 172                 ZERO_STRUCT(new_nt_password_blob);
 173         }
 174
 175         if (new_lm_password_blob.length > 0) {
 176                 memcpy(&new_lm_password.data, new_lm_password_blob.data, 516);
 177         } else {
 178                 ZERO_STRUCT(new_lm_password);
 179         }
 180
 181         if (old_nt_hash_enc_blob.length > 0) {
 182                 memcpy(&old_nt_hash_enc.hash, old_nt_hash_enc_blob.data, 16);
 183         } else {
 184                 ZERO_STRUCT(old_nt_hash_enc);
 185         }
 186
 187         if (old_lm_hash_enc_blob.length > 0) {
 188                 memcpy(&old_lm_hash_enc.hash, old_lm_hash_enc_blob.data, 16);
 189         } else {
 190                 ZERO_STRUCT(old_lm_hash_enc);
 191         }
 192
 193         result = rpccli_samr_ChangePasswordUser2(cli, mem_ctx,
 194                                                  &server,
 195                                                  &account,
 196                                                  &new_nt_password,
 197                                                  &old_nt_hash_enc,
 198                                                  true,
 199                                                  &new_lm_password,
 200                                                  &old_lm_hash_enc);
 201         return result;
 202 }
 203
 204
 205 /* change password 3 */
 206
 207 NTSTATUS rpccli_samr_chgpasswd_user3(struct rpc_pipe_client *cli,
 208                                      TALLOC_CTX *mem_ctx,
 209                                      const char *username,
 210                                      const char *newpassword,
 211                                      const char *oldpassword,
 212                                      struct samr_DomInfo1 **dominfo1,
 213                                      struct userPwdChangeFailureInformation **reject)
 214 {
 215         NTSTATUS status;
 216
 217         struct samr_CryptPassword new_nt_password;
 218         struct samr_CryptPassword new_lm_password;
 219         struct samr_Password old_nt_hash_enc;
 220         struct samr_Password old_lanman_hash_enc;
 221
 222         uchar old_nt_hash[16];
 223         uchar old_lanman_hash[16];
 224         uchar new_nt_hash[16];
 225         uchar new_lanman_hash[16];
 226
 227         struct lsa_String server, account;
 228
 229         DEBUG(10,("rpccli_samr_chgpasswd_user3\n"));
 230
 231         init_lsa_String(&server, cli->srv_name_slash);
 232         init_lsa_String(&account, username);
 233
 234         /* Calculate the MD4 hash (NT compatible) of the password */
 235         E_md4hash(oldpassword, old_nt_hash);
 236         E_md4hash(newpassword, new_nt_hash);
 237
 238         if (lp_client_lanman_auth() &&
 239             E_deshash(newpassword, new_lanman_hash) &&
 240             E_deshash(oldpassword, old_lanman_hash)) {
 241                 /* E_deshash returns false for 'long' passwords (> 14
 242                    DOS chars).  This allows us to match Win2k, which
 243                    does not store a LM hash for these passwords (which
 244                    would reduce the effective password length to 14) */
 245
 246                 encode_pw_buffer(new_lm_password.data, newpassword, STR_UNICODE);
 247
 248                 arcfour_crypt(new_lm_password.data, old_nt_hash, 516);
 249                 E_old_pw_hash(new_nt_hash, old_lanman_hash, old_lanman_hash_enc.hash);
 250         } else {
 251                 ZERO_STRUCT(new_lm_password);
 252                 ZERO_STRUCT(old_lanman_hash_enc);
 253         }
 254
 255         encode_pw_buffer(new_nt_password.data, newpassword, STR_UNICODE);
 256
 257         arcfour_crypt(new_nt_password.data, old_nt_hash, 516);
 258         E_old_pw_hash(new_nt_hash, old_nt_hash, old_nt_hash_enc.hash);
 259
 260         status = rpccli_samr_ChangePasswordUser3(cli, mem_ctx,
 261                                                  &server,
 262                                                  &account,
 263                                                  &new_nt_password,
 264                                                  &old_nt_hash_enc,
 265                                                  true,
 266                                                  &new_lm_password,
 267                                                  &old_lanman_hash_enc,
 268                                                  NULL,
 269                                                  dominfo1,
 270                                                  reject);
 271         return status;
 272 }
 273
 274 /* This function returns the bizzare set of (max_entries, max_size) required
 275    for the QueryDisplayInfo RPC to actually work against a domain controller
 276    with large (10k and higher) numbers of users.  These values were
 277    obtained by inspection using ethereal and NT4 running User Manager. */
 278
 279 void get_query_dispinfo_params(int loop_count, uint32 *max_entries,
 280                                uint32 *max_size)
 281 {
 282         switch(loop_count) {
 283         case 0:
 284                 *max_entries = 512;
 285                 *max_size = 16383;
 286                 break;
 287         case 1:
 288                 *max_entries = 1024;
 289                 *max_size = 32766;
 290                 break;
 291         case 2:
 292                 *max_entries = 2048;
 293                 *max_size = 65532;
 294                 break;
 295         case 3:
 296                 *max_entries = 4096;
 297                 *max_size = 131064;
 298                 break;
 299         default:              /* loop_count >= 4 */
 300                 *max_entries = 4096;
 301                 *max_size = 131071;
 302                 break;
 303         }
 304 }
 305
 306 NTSTATUS rpccli_try_samr_connects(struct rpc_pipe_client *cli,
 307                                   TALLOC_CTX *mem_ctx,
 308                                   uint32_t access_mask,
 309                                   struct policy_handle *connect_pol)
 310 {
 311         NTSTATUS status;
 312         union samr_ConnectInfo info_in, info_out;
 313         struct samr_ConnectInfo1 info1;
 314         uint32_t lvl_out = 0;
 315
 316         ZERO_STRUCT(info1);
 317
 318         info1.client_version = SAMR_CONNECT_W2K;
 319         info_in.info1 = info1;
 320
 321         status = rpccli_samr_Connect5(cli, mem_ctx,
 322                                       cli->srv_name_slash,
 323                                       access_mask,
 324                                       1,
 325                                       &info_in,
 326                                       &lvl_out,
 327                                       &info_out,
 328                                       connect_pol);
 329         if (NT_STATUS_IS_OK(status)) {
 330                 return status;
 331         }
 332
 333         status = rpccli_samr_Connect4(cli, mem_ctx,
 334                                       cli->srv_name_slash,
 335                                       SAMR_CONNECT_W2K,
 336                                       access_mask,
 337                                       connect_pol);
 338         if (NT_STATUS_IS_OK(status)) {
 339                 return status;
 340         }
 341
 342         status = rpccli_samr_Connect2(cli, mem_ctx,
 343                                       cli->srv_name_slash,
 344                                       access_mask,
 345                                       connect_pol);
 346         return status;
 347 }
 348