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 "rpc_client/cli_pipe.h"
  25 #include "../librpc/gen_ndr/ndr_lsa.h"
  26 #include "rpc_client/cli_lsarpc.h"
  27 #include "libsmb/libsmb.h"
  28
  29 /********************************************************
  30  Connection cachine struct. Goes away when ctx destroyed.
  31 ********************************************************/
  32
  33 struct con_struct {
  34         bool failed_connect;
  35         NTSTATUS err;
  36         struct cli_state *cli;
  37         struct rpc_pipe_client *lsapipe;
  38         struct policy_handle pol;
  39 };
  40
  41 static struct con_struct *cs;
  42
  43 /********************************************************
  44  Close connection on context destruction.
  45 ********************************************************/
  46
  47 static int cs_destructor(struct con_struct *p)
  48 {
  49         if (cs->cli) {
  50                 cli_shutdown(cs->cli);
  51         }
  52         cs = NULL;
  53         return 0;
  54 }
  55
  56 /********************************************************
  57  Create the connection to localhost.
  58 ********************************************************/
  59
  60 static struct con_struct *create_cs(struct net_context *c,
  61                                     TALLOC_CTX *ctx, NTSTATUS *perr)
  62 {
  63         NTSTATUS nt_status;
  64         struct sockaddr_storage loopback_ss;
  65
  66         *perr = NT_STATUS_OK;
  67
  68         if (!interpret_string_addr(&loopback_ss, "127.0.0.1", AI_NUMERICHOST)) {
  69                 *perr = NT_STATUS_INVALID_PARAMETER;
  70                 return NULL;
  71         }
  72
  73         if (cs) {
  74                 if (cs->failed_connect) {
  75                         *perr = cs->err;
  76                         return NULL;
  77                 }
  78                 return cs;
  79         }
  80
  81         cs = talloc(ctx, struct con_struct);
  82         if (!cs) {
  83                 *perr = NT_STATUS_NO_MEMORY;
  84                 return NULL;
  85         }
  86
  87         ZERO_STRUCTP(cs);
  88         talloc_set_destructor(cs, cs_destructor);
  89
  90         /* Connect to localhost with given username/password. */
  91         /* JRA. Pretty sure we can just do this anonymously.... */
  92 #if 0
  93         if (!opt_password && !opt_machine_pass) {
  94                 char *pass = getpass("Password:");
  95                 if (pass) {
  96                         opt_password = SMB_STRDUP(pass);
  97                 }
  98         }
  99 #endif
 100
 101         nt_status = cli_full_connection(&cs->cli, lp_netbios_name(), lp_netbios_name(),
 102                                         &loopback_ss, 0,
 103                                         "IPC$", "IPC",
 104 #if 0
 105                                         c->opt_user_name,
 106                                         c->opt_workgroup,
 107                                         c->opt_password,
 108 #else
 109                                         "",
 110                                         c->opt_workgroup,
 111                                         "",
 112 #endif
 113                                         0,
 114                                         SMB_SIGNING_DEFAULT);
 115
 116         if (!NT_STATUS_IS_OK(nt_status)) {
 117                 DEBUG(2,("create_cs: Connect failed. Error was %s\n", nt_errstr(nt_status)));
 118                 cs->failed_connect = true;
 119                 cs->err = nt_status;
 120                 *perr = nt_status;
 121                 return NULL;
 122         }
 123
 124         nt_status = cli_rpc_pipe_open_noauth(cs->cli,
 125                                         &ndr_table_lsarpc,
 126                                         &cs->lsapipe);
 127
 128         if (!NT_STATUS_IS_OK(nt_status)) {
 129                 DEBUG(2,("create_cs: open LSA pipe failed. Error was %s\n", nt_errstr(nt_status)));
 130                 cs->failed_connect = true;
 131                 cs->err = nt_status;
 132                 *perr = nt_status;
 133                 return NULL;
 134         }
 135
 136         nt_status = rpccli_lsa_open_policy(cs->lsapipe, ctx, true,
 137                                 SEC_FLAG_MAXIMUM_ALLOWED,
 138                                 &cs->pol);
 139
 140         if (!NT_STATUS_IS_OK(nt_status)) {
 141                 DEBUG(2,("create_cs: rpccli_lsa_open_policy failed. Error was %s\n", nt_errstr(nt_status)));
 142                 cs->failed_connect = true;
 143                 cs->err = nt_status;
 144                 *perr = nt_status;
 145                 return NULL;
 146         }
 147
 148         return cs;
 149 }
 150
 151 /********************************************************
 152  Do a lookup_sids call to localhost.
 153  Check if the local machine is authoritative for this sid. We can't
 154  check if this is our SID as that's stored in the root-read-only
 155  secrets.tdb.
 156  The local smbd will also ask winbindd for us, so we don't have to.
 157 ********************************************************/
 158
 159 NTSTATUS net_lookup_name_from_sid(struct net_context *c,
 160                                 TALLOC_CTX *ctx,
 161                                 struct dom_sid *psid,
 162                                 const char **ppdomain,
 163                                 const char **ppname)
 164 {
 165         NTSTATUS nt_status;
 166         struct con_struct *csp = NULL;
 167         char **domains;
 168         char **names;
 169         enum lsa_SidType *types;
 170
 171         *ppdomain = NULL;
 172         *ppname = NULL;
 173
 174         csp = create_cs(c, ctx, &nt_status);
 175         if (csp == NULL) {
 176                 return nt_status;
 177         }
 178
 179         nt_status = rpccli_lsa_lookup_sids(csp->lsapipe, ctx,
 180                                                 &csp->pol,
 181                                                 1, psid,
 182                                                 &domains,
 183                                                 &names,
 184                                                 &types);
 185
 186         if (!NT_STATUS_IS_OK(nt_status)) {
 187                 return nt_status;
 188         }
 189
 190         *ppdomain = domains[0];
 191         *ppname = names[0];
 192         /* Don't care about type here. */
 193
 194         /* Converted OK */
 195         return NT_STATUS_OK;
 196 }
 197
 198 /********************************************************
 199  Do a lookup_names call to localhost.
 200 ********************************************************/
 201
 202 NTSTATUS net_lookup_sid_from_name(struct net_context *c, TALLOC_CTX *ctx,
 203                                   const char *full_name, struct dom_sid *pret_sid)
 204 {
 205         NTSTATUS nt_status;
 206         struct con_struct *csp = NULL;
 207         struct dom_sid *sids = NULL;
 208         enum lsa_SidType *types = NULL;
 209
 210         csp = create_cs(c, ctx, &nt_status);
 211         if (csp == NULL) {
 212                 return nt_status;
 213         }
 214
 215         nt_status = rpccli_lsa_lookup_names(csp->lsapipe, ctx,
 216                                                 &csp->pol,
 217                                                 1,
 218                                                 &full_name,
 219                                                 NULL, 1,
 220                                                 &sids, &types);
 221
 222         if (!NT_STATUS_IS_OK(nt_status)) {
 223                 return nt_status;
 224         }
 225
 226         *pret_sid = sids[0];
 227
 228         /* Converted OK */
 229         return NT_STATUS_OK;
 230 }