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