source/utils/netlookup.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Name lookup.
   5
   6    Copyright (C) Jeremy Allison 2005
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "includes.h"
  23 #include "utils/net.h"
  24
  25 /********************************************************
  26  Connection cachine struct. Goes away when ctx destroyed.
  27 ********************************************************/
  28
  29 struct con_struct {
  30         bool failed_connect;
  31         NTSTATUS err;
  32         struct cli_state *cli;
  33         struct rpc_pipe_client *lsapipe;
  34         POLICY_HND pol;
  35 };
  36
  37 static struct con_struct *cs;
  38
  39 /********************************************************
  40  Close connection on context destruction.
  41 ********************************************************/
  42
  43 static int cs_destructor(struct con_struct *p)
  44 {
  45         if (cs->cli) {
  46                 cli_shutdown(cs->cli);
  47         }
  48         cs = NULL;
  49         return 0;
  50 }
  51
  52 /********************************************************
  53  Create the connection to localhost.
  54 ********************************************************/
  55
  56 static struct con_struct *create_cs(struct net_context *c,
  57                                     TALLOC_CTX *ctx, NTSTATUS *perr)
  58 {
  59         NTSTATUS nt_status;
  60         struct sockaddr_storage loopback_ss;
  61
  62         *perr = NT_STATUS_OK;
  63
  64         if (!interpret_string_addr(&loopback_ss, "127.0.0.1", AI_NUMERICHOST)) {
  65                 *perr = NT_STATUS_INVALID_PARAMETER;
  66                 return NULL;
  67         }
  68
  69         if (cs) {
  70                 if (cs->failed_connect) {
  71                         *perr = cs->err;
  72                         return NULL;
  73                 }
  74                 return cs;
  75         }
  76
  77         cs = TALLOC_P(ctx, struct con_struct);
  78         if (!cs) {
  79                 *perr = NT_STATUS_NO_MEMORY;
  80                 return NULL;
  81         }
  82
  83         ZERO_STRUCTP(cs);
  84         talloc_set_destructor(cs, cs_destructor);
  85
  86         /* Connect to localhost with given username/password. */
  87         /* JRA. Pretty sure we can just do this anonymously.... */
  88 #if 0
  89         if (!opt_password && !opt_machine_pass) {
  90                 char *pass = getpass("Password:");
  91                 if (pass) {
  92                         opt_password = SMB_STRDUP(pass);
  93                 }
  94         }
  95 #endif
  96
  97         nt_status = cli_full_connection(&cs->cli, global_myname(), global_myname(),
  98                                         &loopback_ss, 0,
  99                                         "IPC$", "IPC",
 100 #if 0
 101                                         c->opt_user_name,
 102                                         c->opt_workgroup,
 103                                         c->opt_password,
 104 #else
 105                                         "",
 106                                         c->opt_workgroup,
 107                                         "",
 108 #endif
 109                                         0,
 110                                         Undefined,
 111                                         NULL);
 112
 113         if (!NT_STATUS_IS_OK(nt_status)) {
 114                 DEBUG(2,("create_cs: Connect failed. Error was %s\n", nt_errstr(nt_status)));
 115                 cs->failed_connect = true;
 116                 cs->err = nt_status;
 117                 *perr = nt_status;
 118                 return NULL;
 119         }
 120
 121         nt_status = cli_rpc_pipe_open_noauth(cs->cli,
 122                                         &ndr_table_lsarpc.syntax_id,
 123                                         &cs->lsapipe);
 124
 125         if (!NT_STATUS_IS_OK(nt_status)) {
 126                 DEBUG(2,("create_cs: open LSA pipe failed. Error was %s\n", nt_errstr(nt_status)));
 127                 cs->failed_connect = true;
 128                 cs->err = nt_status;
 129                 *perr = nt_status;
 130                 return NULL;
 131         }
 132
 133         nt_status = rpccli_lsa_open_policy(cs->lsapipe, ctx, true,
 134                                 SEC_RIGHTS_MAXIMUM_ALLOWED,
 135                                 &cs->pol);
 136
 137         if (!NT_STATUS_IS_OK(nt_status)) {
 138                 DEBUG(2,("create_cs: rpccli_lsa_open_policy failed. Error was %s\n", nt_errstr(nt_status)));
 139                 cs->failed_connect = true;
 140                 cs->err = nt_status;
 141                 *perr = nt_status;
 142                 return NULL;
 143         }
 144
 145         return cs;
 146 }
 147
 148 /********************************************************
 149  Do a lookup_sids call to localhost.
 150  Check if the local machine is authoritative for this sid. We can't
 151  check if this is our SID as that's stored in the root-read-only
 152  secrets.tdb.
 153  The local smbd will also ask winbindd for us, so we don't have to.
 154 ********************************************************/
 155
 156 NTSTATUS net_lookup_name_from_sid(struct net_context *c,
 157                                 TALLOC_CTX *ctx,
 158                                 DOM_SID *psid,
 159                                 const char **ppdomain,
 160                                 const char **ppname)
 161 {
 162         NTSTATUS nt_status;
 163         struct con_struct *csp = NULL;
 164         char **domains;
 165         char **names;
 166         enum lsa_SidType *types;
 167
 168         *ppdomain = NULL;
 169         *ppname = NULL;
 170
 171         csp = create_cs(c, ctx, &nt_status);
 172         if (csp == NULL) {
 173                 return nt_status;
 174         }
 175
 176         nt_status = rpccli_lsa_lookup_sids(csp->lsapipe, ctx,
 177                                                 &csp->pol,
 178                                                 1, psid,
 179                                                 &domains,
 180                                                 &names,
 181                                                 &types);
 182
 183         if (!NT_STATUS_IS_OK(nt_status)) {
 184                 return nt_status;
 185         }
 186
 187         *ppdomain = domains[0];
 188         *ppname = names[0];
 189         /* Don't care about type here. */
 190
 191         /* Converted OK */
 192         return NT_STATUS_OK;
 193 }
 194
 195 /********************************************************
 196  Do a lookup_names call to localhost.
 197 ********************************************************/
 198
 199 NTSTATUS net_lookup_sid_from_name(struct net_context *c, TALLOC_CTX *ctx,
 200                                   const char *full_name, DOM_SID *pret_sid)
 201 {
 202         NTSTATUS nt_status;
 203         struct con_struct *csp = NULL;
 204         DOM_SID *sids = NULL;
 205         enum lsa_SidType *types = NULL;
 206
 207         csp = create_cs(c, ctx, &nt_status);
 208         if (csp == NULL) {
 209                 return nt_status;
 210         }
 211
 212         nt_status = rpccli_lsa_lookup_names(csp->lsapipe, ctx,
 213                                                 &csp->pol,
 214                                                 1,
 215                                                 &full_name,
 216                                                 NULL, 1,
 217                                                 &sids, &types);
 218
 219         if (!NT_STATUS_IS_OK(nt_status)) {
 220                 return nt_status;
 221         }
 222
 223         *pret_sid = sids[0];
 224
 225         /* Converted OK */
 226         return NT_STATUS_OK;
 227 }