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