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/cli_lsa.h"
  24
  25 /*********************************************************
  26  Change the domain password on the PDC.
  27  Store the password ourselves, but use the supplied password
  28  Caller must have already setup the connection to the NETLOGON pipe
  29 **********************************************************/
  30
  31 NTSTATUS trust_pw_change_and_store_it(struct rpc_pipe_client *cli, TALLOC_CTX *mem_ctx,
  32                                       const char *domain,
  33                                       const char *account_name,
  34                                       unsigned char orig_trust_passwd_hash[16],
  35                                       enum netr_SchannelType sec_channel_type)
  36 {
  37         unsigned char new_trust_passwd_hash[16];
  38         char *new_trust_passwd;
  39         NTSTATUS nt_status;
  40
  41         switch (sec_channel_type) {
  42         case SEC_CHAN_WKSTA:
  43         case SEC_CHAN_DOMAIN:
  44                 break;
  45         default:
  46                 return NT_STATUS_NOT_SUPPORTED;
  47         }
  48
  49         /* Create a random machine account password */
  50         new_trust_passwd = generate_random_str(mem_ctx, DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH);
  51
  52         if (new_trust_passwd == NULL) {
  53                 DEBUG(0, ("talloc_strdup failed\n"));
  54                 return NT_STATUS_NO_MEMORY;
  55         }
  56
  57         E_md4hash(new_trust_passwd, new_trust_passwd_hash);
  58
  59         nt_status = rpccli_netlogon_set_trust_password(cli, mem_ctx,
  60                                                        account_name,
  61                                                        orig_trust_passwd_hash,
  62                                                        new_trust_passwd,
  63                                                        new_trust_passwd_hash,
  64                                                        sec_channel_type);
  65
  66         if (NT_STATUS_IS_OK(nt_status)) {
  67                 DEBUG(3,("%s : trust_pw_change_and_store_it: Changed password.\n",
  68                          current_timestring(talloc_tos(), False)));
  69                 /*
  70                  * Return the result of trying to write the new password
  71                  * back into the trust account file.
  72                  */
  73
  74                 switch (sec_channel_type) {
  75
  76                 case SEC_CHAN_WKSTA:
  77                         if (!secrets_store_machine_password(new_trust_passwd, domain, sec_channel_type)) {
  78                                 nt_status = NT_STATUS_UNSUCCESSFUL;
  79                         }
  80                         break;
  81
  82                 case SEC_CHAN_DOMAIN: {
  83                         char *pwd;
  84                         struct dom_sid sid;
  85                         time_t pass_last_set_time;
  86
  87                         /* we need to get the sid first for the
  88                          * pdb_set_trusteddom_pw call */
  89
  90                         if (!pdb_get_trusteddom_pw(domain, &pwd, &sid, &pass_last_set_time)) {
  91                                 nt_status = NT_STATUS_TRUSTED_RELATIONSHIP_FAILURE;
  92                         }
  93                         if (!pdb_set_trusteddom_pw(domain, new_trust_passwd, &sid)) {
  94                                 nt_status = NT_STATUS_INTERNAL_DB_CORRUPTION;
  95                         }
  96                         break;
  97                 }
  98                 default:
  99                         break;
 100                 }
 101         }
 102
 103         return nt_status;
 104 }
 105
 106 /*********************************************************
 107  Change the domain password on the PDC.
 108  Do most of the legwork ourselfs.  Caller must have
 109  already setup the connection to the NETLOGON pipe
 110 **********************************************************/
 111
 112 NTSTATUS trust_pw_find_change_and_store_it(struct rpc_pipe_client *cli,
 113                                            TALLOC_CTX *mem_ctx,
 114                                            const char *domain)
 115 {
 116         unsigned char old_trust_passwd_hash[16];
 117         enum netr_SchannelType sec_channel_type = SEC_CHAN_NULL;
 118         const char *account_name;
 119
 120         if (!get_trust_pw_hash(domain, old_trust_passwd_hash, &account_name,
 121                                &sec_channel_type)) {
 122                 DEBUG(0, ("could not fetch domain secrets for domain %s!\n", domain));
 123                 return NT_STATUS_UNSUCCESSFUL;
 124         }
 125
 126         return trust_pw_change_and_store_it(cli, mem_ctx, domain,
 127                                             account_name,
 128                                             old_trust_passwd_hash,
 129                                             sec_channel_type);
 130 }
 131
 132 /*********************************************************************
 133  Enumerate the list of trusted domains from a DC
 134 *********************************************************************/
 135
 136 bool enumerate_domain_trusts( TALLOC_CTX *mem_ctx, const char *domain,
 137                                      char ***domain_names, uint32 *num_domains,
 138                                      DOM_SID **sids )
 139 {
 140         struct policy_handle    pol;
 141         NTSTATUS        result = NT_STATUS_UNSUCCESSFUL;
 142         fstring         dc_name;
 143         struct sockaddr_storage dc_ss;
 144         uint32          enum_ctx = 0;
 145         struct cli_state *cli = NULL;
 146         struct rpc_pipe_client *lsa_pipe = NULL;
 147         bool            retry;
 148         struct lsa_DomainList dom_list;
 149         int i;
 150
 151         *domain_names = NULL;
 152         *num_domains = 0;
 153         *sids = NULL;
 154
 155         /* lookup a DC first */
 156
 157         if ( !get_dc_name(domain, NULL, dc_name, &dc_ss) ) {
 158                 DEBUG(3,("enumerate_domain_trusts: can't locate a DC for domain %s\n",
 159                         domain));
 160                 return False;
 161         }
 162
 163         /* setup the anonymous connection */
 164
 165         result = cli_full_connection( &cli, global_myname(), dc_name, &dc_ss, 0, "IPC$", "IPC",
 166                 "", "", "", 0, Undefined, &retry);
 167         if ( !NT_STATUS_IS_OK(result) )
 168                 goto done;
 169
 170         /* open the LSARPC_PIPE */
 171
 172         result = cli_rpc_pipe_open_noauth(cli, &ndr_table_lsarpc.syntax_id,
 173                                           &lsa_pipe);
 174         if (!NT_STATUS_IS_OK(result)) {
 175                 goto done;
 176         }
 177
 178         /* get a handle */
 179
 180         result = rpccli_lsa_open_policy(lsa_pipe, mem_ctx, True,
 181                 LSA_POLICY_VIEW_LOCAL_INFORMATION, &pol);
 182         if ( !NT_STATUS_IS_OK(result) )
 183                 goto done;
 184
 185         /* Lookup list of trusted domains */
 186
 187         result = rpccli_lsa_EnumTrustDom(lsa_pipe, mem_ctx,
 188                                          &pol,
 189                                          &enum_ctx,
 190                                          &dom_list,
 191                                          (uint32_t)-1);
 192         if ( !NT_STATUS_IS_OK(result) )
 193                 goto done;
 194
 195         *num_domains = dom_list.count;
 196
 197         *domain_names = TALLOC_ZERO_ARRAY(mem_ctx, char *, *num_domains);
 198         if (!*domain_names) {
 199                 result = NT_STATUS_NO_MEMORY;
 200                 goto done;
 201         }
 202
 203         *sids = TALLOC_ZERO_ARRAY(mem_ctx, DOM_SID, *num_domains);
 204         if (!*sids) {
 205                 result = NT_STATUS_NO_MEMORY;
 206                 goto done;
 207         }
 208
 209         for (i=0; i< *num_domains; i++) {
 210                 (*domain_names)[i] = CONST_DISCARD(char *, dom_list.domains[i].name.string);
 211                 (*sids)[i] = *dom_list.domains[i].sid;
 212         }
 213
 214 done:
 215         /* cleanup */
 216         if (cli) {
 217                 DEBUG(10,("enumerate_domain_trusts: shutting down connection...\n"));
 218                 cli_shutdown( cli );
 219         }
 220
 221         return NT_STATUS_IS_OK(result);
 222 }