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
  23 /*********************************************************
  24  Change the domain password on the PDC.
  25  Store the password ourselves, but use the supplied password
  26  Caller must have already setup the connection to the NETLOGON pipe
  27 **********************************************************/
  28
  29 NTSTATUS trust_pw_change_and_store_it(struct rpc_pipe_client *cli, TALLOC_CTX *mem_ctx,
  30                                       const char *domain,
  31                                       unsigned char orig_trust_passwd_hash[16],
  32                                       uint32 sec_channel_type)
  33 {
  34         unsigned char new_trust_passwd_hash[16];
  35         char *new_trust_passwd;
  36         NTSTATUS nt_status;
  37
  38         /* Create a random machine account password */
  39         new_trust_passwd = generate_random_str(mem_ctx, DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH);
  40
  41         if (new_trust_passwd == NULL) {
  42                 DEBUG(0, ("talloc_strdup failed\n"));
  43                 return NT_STATUS_NO_MEMORY;
  44         }
  45
  46         E_md4hash(new_trust_passwd, new_trust_passwd_hash);
  47
  48         nt_status = rpccli_netlogon_set_trust_password(cli, mem_ctx,
  49                                                        orig_trust_passwd_hash,
  50                                                        new_trust_passwd,
  51                                                        new_trust_passwd_hash,
  52                                                        sec_channel_type);
  53
  54         if (NT_STATUS_IS_OK(nt_status)) {
  55                 DEBUG(3,("%s : trust_pw_change_and_store_it: Changed password.\n",
  56                          current_timestring(debug_ctx(), False)));
  57                 /*
  58                  * Return the result of trying to write the new password
  59                  * back into the trust account file.
  60                  */
  61                 if (!secrets_store_machine_password(new_trust_passwd, domain, sec_channel_type)) {
  62                         nt_status = NT_STATUS_UNSUCCESSFUL;
  63                 }
  64         }
  65
  66         return nt_status;
  67 }
  68
  69 /*********************************************************
  70  Change the domain password on the PDC.
  71  Do most of the legwork ourselfs.  Caller must have
  72  already setup the connection to the NETLOGON pipe
  73 **********************************************************/
  74
  75 NTSTATUS trust_pw_find_change_and_store_it(struct rpc_pipe_client *cli,
  76                                            TALLOC_CTX *mem_ctx,
  77                                            const char *domain)
  78 {
  79         unsigned char old_trust_passwd_hash[16];
  80         uint32 sec_channel_type = 0;
  81
  82         if (!secrets_fetch_trust_account_password(domain,
  83                                                   old_trust_passwd_hash,
  84                                                   NULL, &sec_channel_type)) {
  85                 DEBUG(0, ("could not fetch domain secrets for domain %s!\n", domain));
  86                 return NT_STATUS_UNSUCCESSFUL;
  87         }
  88
  89         return trust_pw_change_and_store_it(cli, mem_ctx, domain,
  90                                             old_trust_passwd_hash,
  91                                             sec_channel_type);
  92 }
  93
  94 /*********************************************************************
  95  Enumerate the list of trusted domains from a DC
  96 *********************************************************************/
  97
  98 bool enumerate_domain_trusts( TALLOC_CTX *mem_ctx, const char *domain,
  99                                      char ***domain_names, uint32 *num_domains,
 100                                      DOM_SID **sids )
 101 {
 102         struct policy_handle    pol;
 103         NTSTATUS        result = NT_STATUS_UNSUCCESSFUL;
 104         fstring         dc_name;
 105         struct sockaddr_storage dc_ss;
 106         uint32          enum_ctx = 0;
 107         struct cli_state *cli = NULL;
 108         struct rpc_pipe_client *lsa_pipe;
 109         bool            retry;
 110         struct lsa_DomainList dom_list;
 111         int i;
 112
 113         *domain_names = NULL;
 114         *num_domains = 0;
 115         *sids = NULL;
 116
 117         /* lookup a DC first */
 118
 119         if ( !get_dc_name(domain, NULL, dc_name, &dc_ss) ) {
 120                 DEBUG(3,("enumerate_domain_trusts: can't locate a DC for domain %s\n",
 121                         domain));
 122                 return False;
 123         }
 124
 125         /* setup the anonymous connection */
 126
 127         result = cli_full_connection( &cli, global_myname(), dc_name, &dc_ss, 0, "IPC$", "IPC",
 128                 "", "", "", 0, Undefined, &retry);
 129         if ( !NT_STATUS_IS_OK(result) )
 130                 goto done;
 131
 132         /* open the LSARPC_PIPE */
 133
 134         result = cli_rpc_pipe_open_noauth(cli, &ndr_table_lsarpc.syntax_id,
 135                                           &lsa_pipe);
 136         if (!NT_STATUS_IS_OK(result)) {
 137                 goto done;
 138         }
 139
 140         /* get a handle */
 141
 142         result = rpccli_lsa_open_policy(lsa_pipe, mem_ctx, True,
 143                 LSA_POLICY_VIEW_LOCAL_INFORMATION, &pol);
 144         if ( !NT_STATUS_IS_OK(result) )
 145                 goto done;
 146
 147         /* Lookup list of trusted domains */
 148
 149         result = rpccli_lsa_EnumTrustDom(lsa_pipe, mem_ctx,
 150                                          &pol,
 151                                          &enum_ctx,
 152                                          &dom_list,
 153                                          (uint32_t)-1);
 154         if ( !NT_STATUS_IS_OK(result) )
 155                 goto done;
 156
 157         *num_domains = dom_list.count;
 158
 159         *domain_names = TALLOC_ZERO_ARRAY(mem_ctx, char *, *num_domains);
 160         if (!*domain_names) {
 161                 result = NT_STATUS_NO_MEMORY;
 162                 goto done;
 163         }
 164
 165         *sids = TALLOC_ZERO_ARRAY(mem_ctx, DOM_SID, *num_domains);
 166         if (!*sids) {
 167                 result = NT_STATUS_NO_MEMORY;
 168                 goto done;
 169         }
 170
 171         for (i=0; i< *num_domains; i++) {
 172                 (*domain_names)[i] = CONST_DISCARD(char *, dom_list.domains[i].name.string);
 173                 (*sids)[i] = *dom_list.domains[i].sid;
 174         }
 175
 176 done:
 177         /* cleanup */
 178         if (cli) {
 179                 DEBUG(10,("enumerate_domain_trusts: shutting down connection...\n"));
 180                 cli_shutdown( cli );
 181         }
 182
 183         return NT_STATUS_IS_OK(result);
 184 }