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