source3/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 #include "../librpc/gen_ndr/ndr_lsa.h"
  25 #include "rpc_client/cli_lsarpc.h"
  26
  27 /********************************************************
  28  Connection cachine struct. Goes away when ctx destroyed.
  29 ********************************************************/
  30
  31 struct con_struct {
  32         bool failed_connect;
  33         NTSTATUS err;
  34         struct cli_state *cli;
  35         struct rpc_pipe_client *lsapipe;
  36         struct policy_handle pol;
  37 };
  38
  39 static struct con_struct *cs;
  40
  41 /********************************************************
  42  Close connection on context destruction.
  43 ********************************************************/
  44
  45 static int cs_destructor(struct con_struct *p)
  46 {
  47         if (cs->cli) {
  48                 cli_shutdown(cs->cli);
  49         }
  50         cs = NULL;
  51         return 0;
  52 }
  53
  54 /********************************************************
  55  Create the connection to localhost.
  56 ********************************************************/
  57
  58 static struct con_struct *create_cs(struct net_context *c,
  59                                     TALLOC_CTX *ctx, NTSTATUS *perr)
  60 {
  61         NTSTATUS nt_status;
  62         struct sockaddr_storage loopback_ss;
  63
  64         *perr = NT_STATUS_OK;
  65
  66         if (!interpret_string_addr(&loopback_ss, "127.0.0.1", AI_NUMERICHOST)) {
  67                 *perr = NT_STATUS_INVALID_PARAMETER;
  68                 return NULL;
  69         }
  70
  71         if (cs) {
  72                 if (cs->failed_connect) {
  73                         *perr = cs->err;
  74                         return NULL;
  75                 }
  76                 return cs;
  77         }
  78
  79         cs = TALLOC_P(ctx, struct con_struct);
  80         if (!cs) {
  81                 *perr = NT_STATUS_NO_MEMORY;
  82                 return NULL;
  83         }
  84
  85         ZERO_STRUCTP(cs);
  86         talloc_set_destructor(cs, cs_destructor);
  87
  88         /* Connect to localhost with given username/password. */
  89         /* JRA. Pretty sure we can just do this anonymously.... */
  90 #if 0
  91         if (!opt_password && !opt_machine_pass) {
  92                 char *pass = getpass("Password:");
  93                 if (pass) {
  94                         opt_password = SMB_STRDUP(pass);
  95                 }
  96         }
  97 #endif
  98
  99         nt_status = cli_full_connection(&cs->cli, global_myname(), global_myname(),
 100                                         &loopback_ss, 0,
 101                                         "IPC$", "IPC",
 102 #if 0
 103                                         c->opt_user_name,
 104                                         c->opt_workgroup,
 105                                         c->opt_password,
 106 #else
 107                                         "",
 108                                         c->opt_workgroup,
 109                                         "",
 110 #endif
 111                                         0,
 112                                         Undefined,
 113                                         NULL);
 114
 115         if (!NT_STATUS_IS_OK(nt_status)) {
 116                 DEBUG(2,("create_cs: Connect failed. Error was %s\n", nt_errstr(nt_status)));
 117                 cs->failed_connect = true;
 118                 cs->err = nt_status;
 119                 *perr = nt_status;
 120                 return NULL;
 121         }
 122
 123         nt_status = cli_rpc_pipe_open_noauth(cs->cli,
 124                                         &ndr_table_lsarpc.syntax_id,
 125                                         &cs->lsapipe);
 126
 127         if (!NT_STATUS_IS_OK(nt_status)) {
 128                 DEBUG(2,("create_cs: open LSA pipe failed. Error was %s\n", nt_errstr(nt_status)));
 129                 cs->failed_connect = true;
 130                 cs->err = nt_status;
 131                 *perr = nt_status;
 132                 return NULL;
 133         }
 134
 135         nt_status = rpccli_lsa_open_policy(cs->lsapipe, ctx, true,
 136                                 SEC_FLAG_MAXIMUM_ALLOWED,
 137                                 &cs->pol);
 138
 139         if (!NT_STATUS_IS_OK(nt_status)) {
 140                 DEBUG(2,("create_cs: rpccli_lsa_open_policy failed. Error was %s\n", nt_errstr(nt_status)));
 141                 cs->failed_connect = true;
 142                 cs->err = nt_status;
 143                 *perr = nt_status;
 144                 return NULL;
 145         }
 146
 147         return cs;
 148 }
 149
 150 /********************************************************
 151  Do a lookup_sids call to localhost.
 152  Check if the local machine is authoritative for this sid. We can't
 153  check if this is our SID as that's stored in the root-read-only
 154  secrets.tdb.
 155  The local smbd will also ask winbindd for us, so we don't have to.
 156 ********************************************************/
 157
 158 NTSTATUS net_lookup_name_from_sid(struct net_context *c,
 159                                 TALLOC_CTX *ctx,
 160                                 struct dom_sid *psid,
 161                                 const char **ppdomain,
 162                                 const char **ppname)
 163 {
 164         NTSTATUS nt_status;
 165         struct con_struct *csp = NULL;
 166         char **domains;
 167         char **names;
 168         enum lsa_SidType *types;
 169
 170         *ppdomain = NULL;
 171         *ppname = NULL;
 172
 173         csp = create_cs(c, ctx, &nt_status);
 174         if (csp == NULL) {
 175                 return nt_status;
 176         }
 177
 178         nt_status = rpccli_lsa_lookup_sids(csp->lsapipe, ctx,
 179                                                 &csp->pol,
 180                                                 1, psid,
 181                                                 &domains,
 182                                                 &names,
 183                                                 &types);
 184
 185         if (!NT_STATUS_IS_OK(nt_status)) {
 186                 return nt_status;
 187         }
 188
 189         *ppdomain = domains[0];
 190         *ppname = names[0];
 191         /* Don't care about type here. */
 192
 193         /* Converted OK */
 194         return NT_STATUS_OK;
 195 }
 196
 197 /********************************************************
 198  Do a lookup_names call to localhost.
 199 ********************************************************/
 200
 201 NTSTATUS net_lookup_sid_from_name(struct net_context *c, TALLOC_CTX *ctx,
 202                                   const char *full_name, struct dom_sid *pret_sid)
 203 {
 204         NTSTATUS nt_status;
 205         struct con_struct *csp = NULL;
 206         struct dom_sid *sids = NULL;
 207         enum lsa_SidType *types = NULL;
 208
 209         csp = create_cs(c, ctx, &nt_status);
 210         if (csp == NULL) {
 211                 return nt_status;
 212         }
 213
 214         nt_status = rpccli_lsa_lookup_names(csp->lsapipe, ctx,
 215                                                 &csp->pol,
 216                                                 1,
 217                                                 &full_name,
 218                                                 NULL, 1,
 219                                                 &sids, &types);
 220
 221         if (!NT_STATUS_IS_OK(nt_status)) {
 222                 return nt_status;
 223         }
 224
 225         *pret_sid = sids[0];
 226
 227         /* Converted OK */
 228         return NT_STATUS_OK;
 229 }