source3/libsmb/trusts_util.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  Routines to operate on various trust relationships
   4  *  Copyright (C) Andrew Bartlett                   2001
   5  *  Copyright (C) Rafal Szczesniak                  2003
   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 3 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, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #include "includes.h"
  22 #include "../libcli/auth/libcli_auth.h"
  23 #include "../librpc/gen_ndr/ndr_lsa_c.h"
  24 #include "rpc_client/cli_lsarpc.h"
  25 #include "rpc_client/cli_netlogon.h"
  26 #include "rpc_client/cli_pipe.h"
  27 #include "../librpc/gen_ndr/ndr_netlogon.h"
  28 #include "secrets.h"
  29 #include "passdb.h"
  30
  31 /*********************************************************
  32  Change the domain password on the PDC.
  33  Store the password ourselves, but use the supplied password
  34  Caller must have already setup the connection to the NETLOGON pipe
  35 **********************************************************/
  36
  37 NTSTATUS trust_pw_change_and_store_it(struct rpc_pipe_client *cli, TALLOC_CTX *mem_ctx,
  38                                       const char *domain,
  39                                       const char *account_name,
  40                                       unsigned char orig_trust_passwd_hash[16],
  41                                       enum netr_SchannelType sec_channel_type)
  42 {
  43         unsigned char new_trust_passwd_hash[16];
  44         char *new_trust_passwd;
  45         NTSTATUS nt_status;
  46
  47         switch (sec_channel_type) {
  48         case SEC_CHAN_WKSTA:
  49         case SEC_CHAN_DOMAIN:
  50                 break;
  51         default:
  52                 return NT_STATUS_NOT_SUPPORTED;
  53         }
  54
  55         /* Create a random machine account password */
  56         new_trust_passwd = generate_random_str(mem_ctx, DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH);
  57
  58         if (new_trust_passwd == NULL) {
  59                 DEBUG(0, ("talloc_strdup failed\n"));
  60                 return NT_STATUS_NO_MEMORY;
  61         }
  62
  63         E_md4hash(new_trust_passwd, new_trust_passwd_hash);
  64
  65         nt_status = rpccli_netlogon_set_trust_password(cli, mem_ctx,
  66                                                        account_name,
  67                                                        orig_trust_passwd_hash,
  68                                                        new_trust_passwd,
  69                                                        new_trust_passwd_hash,
  70                                                        sec_channel_type);
  71
  72         if (NT_STATUS_IS_OK(nt_status)) {
  73                 DEBUG(3,("%s : trust_pw_change_and_store_it: Changed password.\n",
  74                          current_timestring(talloc_tos(), False)));
  75                 /*
  76                  * Return the result of trying to write the new password
  77                  * back into the trust account file.
  78                  */
  79
  80                 switch (sec_channel_type) {
  81
  82                 case SEC_CHAN_WKSTA:
  83                         if (!secrets_store_machine_password(new_trust_passwd, domain, sec_channel_type)) {
  84                                 nt_status = NT_STATUS_UNSUCCESSFUL;
  85                         }
  86                         break;
  87
  88                 case SEC_CHAN_DOMAIN: {
  89                         char *pwd;
  90                         struct dom_sid sid;
  91                         time_t pass_last_set_time;
  92
  93                         /* we need to get the sid first for the
  94                          * pdb_set_trusteddom_pw call */
  95
  96                         if (!pdb_get_trusteddom_pw(domain, &pwd, &sid, &pass_last_set_time)) {
  97                                 nt_status = NT_STATUS_TRUSTED_RELATIONSHIP_FAILURE;
  98                         }
  99                         if (!pdb_set_trusteddom_pw(domain, new_trust_passwd, &sid)) {
 100                                 nt_status = NT_STATUS_INTERNAL_DB_CORRUPTION;
 101                         }
 102                         break;
 103                 }
 104                 default:
 105                         break;
 106                 }
 107         }
 108
 109         return nt_status;
 110 }
 111
 112 /*********************************************************
 113  Change the domain password on the PDC.
 114  Do most of the legwork ourselfs.  Caller must have
 115  already setup the connection to the NETLOGON pipe
 116 **********************************************************/
 117
 118 NTSTATUS trust_pw_find_change_and_store_it(struct rpc_pipe_client *cli,
 119                                            TALLOC_CTX *mem_ctx,
 120                                            const char *domain)
 121 {
 122         unsigned char old_trust_passwd_hash[16];
 123         enum netr_SchannelType sec_channel_type = SEC_CHAN_NULL;
 124         const char *account_name;
 125
 126         if (!get_trust_pw_hash(domain, old_trust_passwd_hash, &account_name,
 127                                &sec_channel_type)) {
 128                 DEBUG(0, ("could not fetch domain secrets for domain %s!\n", domain));
 129                 return NT_STATUS_UNSUCCESSFUL;
 130         }
 131
 132         return trust_pw_change_and_store_it(cli, mem_ctx, domain,
 133                                             account_name,
 134                                             old_trust_passwd_hash,
 135                                             sec_channel_type);
 136 }
 137
 138 /*********************************************************************
 139  Enumerate the list of trusted domains from a DC
 140 *********************************************************************/
 141
 142 bool enumerate_domain_trusts( TALLOC_CTX *mem_ctx, const char *domain,
 143                                      char ***domain_names, uint32 *num_domains,
 144                                      struct dom_sid **sids )
 145 {
 146         struct policy_handle    pol;
 147         NTSTATUS status, result;
 148         fstring         dc_name;
 149         struct sockaddr_storage dc_ss;
 150         uint32          enum_ctx = 0;
 151         struct cli_state *cli = NULL;
 152         struct rpc_pipe_client *lsa_pipe = NULL;
 153         struct lsa_DomainList dom_list;
 154         int i;
 155         struct dcerpc_binding_handle *b = NULL;
 156
 157         *domain_names = NULL;
 158         *num_domains = 0;
 159         *sids = NULL;
 160
 161         /* lookup a DC first */
 162
 163         if ( !get_dc_name(domain, NULL, dc_name, &dc_ss) ) {
 164                 DEBUG(3,("enumerate_domain_trusts: can't locate a DC for domain %s\n",
 165                         domain));
 166                 return False;
 167         }
 168
 169         /* setup the anonymous connection */
 170
 171         status = cli_full_connection( &cli, global_myname(), dc_name, &dc_ss, 0, "IPC$", "IPC",
 172                 "", "", "", 0, Undefined);
 173         if ( !NT_STATUS_IS_OK(status) )
 174                 goto done;
 175
 176         /* open the LSARPC_PIPE */
 177
 178         status = cli_rpc_pipe_open_noauth(cli, &ndr_table_lsarpc.syntax_id,
 179                                           &lsa_pipe);
 180         if (!NT_STATUS_IS_OK(status)) {
 181                 goto done;
 182         }
 183
 184         b = lsa_pipe->binding_handle;
 185
 186         /* get a handle */
 187
 188         status = rpccli_lsa_open_policy(lsa_pipe, mem_ctx, True,
 189                 LSA_POLICY_VIEW_LOCAL_INFORMATION, &pol);
 190         if ( !NT_STATUS_IS_OK(status) )
 191                 goto done;
 192
 193         /* Lookup list of trusted domains */
 194
 195         status = dcerpc_lsa_EnumTrustDom(b, mem_ctx,
 196                                          &pol,
 197                                          &enum_ctx,
 198                                          &dom_list,
 199                                          (uint32_t)-1,
 200                                          &result);
 201         if ( !NT_STATUS_IS_OK(status) )
 202                 goto done;
 203         if (!NT_STATUS_IS_OK(result)) {
 204                 status = result;
 205                 goto done;
 206         }
 207
 208         *num_domains = dom_list.count;
 209
 210         *domain_names = TALLOC_ZERO_ARRAY(mem_ctx, char *, *num_domains);
 211         if (!*domain_names) {
 212                 status = NT_STATUS_NO_MEMORY;
 213                 goto done;
 214         }
 215
 216         *sids = TALLOC_ZERO_ARRAY(mem_ctx, struct dom_sid, *num_domains);
 217         if (!*sids) {
 218                 status = NT_STATUS_NO_MEMORY;
 219                 goto done;
 220         }
 221
 222         for (i=0; i< *num_domains; i++) {
 223                 (*domain_names)[i] = CONST_DISCARD(char *, dom_list.domains[i].name.string);
 224                 (*sids)[i] = *dom_list.domains[i].sid;
 225         }
 226
 227 done:
 228         /* cleanup */
 229         if (cli) {
 230                 DEBUG(10,("enumerate_domain_trusts: shutting down connection...\n"));
 231                 cli_shutdown( cli );
 232         }
 233
 234         return NT_STATUS_IS_OK(status);
 235 }
 236
 237 NTSTATUS change_trust_account_password( const char *domain, const char *remote_machine)
 238 {
 239         NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
 240         struct sockaddr_storage pdc_ss;
 241         fstring dc_name;
 242         struct cli_state *cli = NULL;
 243         struct rpc_pipe_client *netlogon_pipe = NULL;
 244
 245         DEBUG(5,("change_trust_account_password: Attempting to change trust account password in domain %s....\n",
 246                 domain));
 247
 248         if (remote_machine == NULL || !strcmp(remote_machine, "*")) {
 249                 /* Use the PDC *only* for this */
 250
 251                 if ( !get_pdc_ip(domain, &pdc_ss) ) {
 252                         DEBUG(0,("Can't get IP for PDC for domain %s\n", domain));
 253                         goto failed;
 254                 }
 255
 256                 if ( !name_status_find( domain, 0x1b, 0x20, &pdc_ss, dc_name) )
 257                         goto failed;
 258         } else {
 259                 /* supoport old deprecated "smbpasswd -j DOMAIN -r MACHINE" behavior */
 260                 fstrcpy( dc_name, remote_machine );
 261         }
 262
 263         /* if this next call fails, then give up.  We can't do
 264            password changes on BDC's  --jerry */
 265
 266         if (!NT_STATUS_IS_OK(cli_full_connection(&cli, global_myname(), dc_name,
 267                                            NULL, 0,
 268                                            "IPC$", "IPC",
 269                                            "", "",
 270                                            "", 0, Undefined))) {
 271                 DEBUG(0,("modify_trust_password: Connection to %s failed!\n", dc_name));
 272                 nt_status = NT_STATUS_UNSUCCESSFUL;
 273                 goto failed;
 274         }
 275
 276         /*
 277          * Ok - we have an anonymous connection to the IPC$ share.
 278          * Now start the NT Domain stuff :-).
 279          */
 280
 281         /* Shouldn't we open this with schannel ? JRA. */
 282
 283         nt_status = cli_rpc_pipe_open_noauth(
 284                 cli, &ndr_table_netlogon.syntax_id, &netlogon_pipe);
 285         if (!NT_STATUS_IS_OK(nt_status)) {
 286                 DEBUG(0,("modify_trust_password: unable to open the domain client session to machine %s. Error was : %s.\n",
 287                         dc_name, nt_errstr(nt_status)));
 288                 cli_shutdown(cli);
 289                 cli = NULL;
 290                 goto failed;
 291         }
 292
 293         nt_status = trust_pw_find_change_and_store_it(
 294                 netlogon_pipe, netlogon_pipe, domain);
 295
 296         cli_shutdown(cli);
 297         cli = NULL;
 298
 299 failed:
 300         if (!NT_STATUS_IS_OK(nt_status)) {
 301                 DEBUG(0,("%s : change_trust_account_password: Failed to change password for domain %s.\n",
 302                         current_timestring(talloc_tos(), False), domain));
 303         }
 304         else
 305                 DEBUG(5,("change_trust_account_password: sucess!\n"));
 306
 307         return nt_status;
 308 }