source/nsswitch/winbindd_sid.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 2.0
   4
   5    Winbind daemon - sid related functions
   6
   7    Copyright (C) Tim Potter 2000
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 2 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22 */
  23
  24 #include "winbindd.h"
  25 #include "sids.h"
  26
  27 /* Convert a string  */
  28
  29 enum winbindd_result winbindd_lookupsid(struct winbindd_cli_state *state)
  30 {
  31         extern DOM_SID global_sid_Builtin;
  32         enum SID_NAME_USE type;
  33         DOM_SID sid, tmp_sid;
  34         uint32 rid;
  35         fstring name;
  36
  37         DEBUG(3, ("[%5d]: lookupsid %s\n", state->pid,
  38                   state->request.data.sid));
  39
  40         /* Lookup sid from PDC using lsa_lookup_sids() */
  41
  42         string_to_sid(&sid, state->request.data.sid);
  43
  44         /* Don't look up BUILTIN sids */
  45
  46         sid_copy(&tmp_sid, &sid);
  47         sid_split_rid(&tmp_sid, &rid);
  48
  49         if (sid_equal(&tmp_sid, &global_sid_Builtin)) {
  50                 return WINBINDD_ERROR;
  51         }
  52
  53         /* Lookup the sid */
  54
  55         if (!winbindd_lookup_name_by_sid(&sid, name, &type)) {
  56                 return WINBINDD_ERROR;
  57         }
  58
  59         string_sub(name, "\\", lp_winbind_separator(), sizeof(fstring));
  60         fstrcpy(state->response.data.name.name, name);
  61         state->response.data.name.type = type;
  62
  63         return WINBINDD_OK;
  64 }
  65
  66 /* Convert a sid to a string */
  67
  68 enum winbindd_result winbindd_lookupname(struct winbindd_cli_state *state)
  69 {
  70         enum SID_NAME_USE type;
  71         fstring sid_str, name_domain, name_user, name;
  72         DOM_SID sid;
  73
  74         DEBUG(3, ("[%5d]: lookupname %s\n", state->pid,
  75                   state->request.data.name));
  76
  77         parse_domain_user(state->request.data.name, name_domain, name_user);
  78
  79         snprintf(name, sizeof(name), "%s\\%s", name_domain, name_user);
  80
  81         /* Lookup name from PDC using lsa_lookup_names() */
  82
  83         if (!winbindd_lookup_sid_by_name(name, &sid, &type)) {
  84                 return WINBINDD_ERROR;
  85         }
  86
  87         sid_to_string(sid_str, &sid);
  88         fstrcpy(state->response.data.sid.sid, sid_str);
  89         state->response.data.sid.type = type;
  90
  91         return WINBINDD_OK;
  92 }
  93
  94 /* Convert a sid to a uid.  We assume we only have one rid attached to the
  95    sid. */
  96
  97 enum winbindd_result winbindd_sid_to_uid(struct winbindd_cli_state *state)
  98 {
  99         DOM_SID sid;
 100         uint32 user_rid;
 101         struct winbindd_domain *domain;
 102
 103         DEBUG(3, ("[%5d]: sid to uid %s\n", state->pid,
 104                   state->request.data.sid));
 105
 106         /* Split sid into domain sid and user rid */
 107
 108         string_to_sid(&sid, state->request.data.sid);
 109         sid_split_rid(&sid, &user_rid);
 110
 111         /* Find domain this sid belongs to */
 112
 113         if ((domain = find_domain_from_sid(&sid)) == NULL) {
 114                 fstring sid_str;
 115
 116                 sid_to_string(sid_str, &sid);
 117                 DEBUG(1, ("Could not find domain for sid %s\n", sid_str));
 118                 return WINBINDD_ERROR;
 119         }
 120
 121         /* Find uid for this sid and return it */
 122
 123         if (!winbindd_idmap_get_uid_from_rid(domain->name, user_rid,
 124                                              &state->response.data.uid)) {
 125                 DEBUG(1, ("Could not get uid for sid %s\n",
 126                           state->request.data.sid));
 127                 return WINBINDD_ERROR;
 128         }
 129
 130         return WINBINDD_OK;
 131 }
 132
 133 /* Convert a sid to a gid.  We assume we only have one rid attached to the
 134    sid.*/
 135
 136 enum winbindd_result winbindd_sid_to_gid(struct winbindd_cli_state *state)
 137 {
 138         DOM_SID sid;
 139         uint32 group_rid;
 140         struct winbindd_domain *domain;
 141
 142         DEBUG(3, ("[%5d]: sid to gid %s\n", state->pid,
 143                   state->request.data.sid));
 144
 145         /* Split sid into domain sid and user rid */
 146
 147         string_to_sid(&sid, state->request.data.sid);
 148         sid_split_rid(&sid, &group_rid);
 149
 150         /* Find domain this sid belongs to */
 151
 152         if ((domain = find_domain_from_sid(&sid)) == NULL) {
 153                 fstring sid_str;
 154
 155                 sid_to_string(sid_str, &sid);
 156                 DEBUG(1, ("Could not find domain for sid %s\n", sid_str));
 157                 return WINBINDD_ERROR;
 158         }
 159
 160         /* Find uid for this sid and return it */
 161
 162         if (!winbindd_idmap_get_gid_from_rid(domain->name, group_rid,
 163                                              &state->response.data.gid)) {
 164                 DEBUG(1, ("Could not get gid for sid %s\n",
 165                           state->request.data.sid));
 166                 return WINBINDD_ERROR;
 167         }
 168
 169         return WINBINDD_OK;
 170 }
 171
 172 /* Convert a uid to a sid */
 173
 174 enum winbindd_result winbindd_uid_to_sid(struct winbindd_cli_state *state)
 175 {
 176         struct winbindd_domain *domain;
 177         uint32 user_rid;
 178         DOM_SID sid;
 179
 180         /* Bug out if the uid isn't in the winbind range */
 181
 182         if ((state->request.data.uid < server_state.uid_low ) ||
 183             (state->request.data.uid > server_state.uid_high)) {
 184                 return WINBINDD_ERROR;
 185         }
 186
 187         DEBUG(3, ("[%5d]: uid to sid %d\n", state->pid,
 188                   state->request.data.uid));
 189
 190         /* Lookup rid for this uid */
 191
 192         if (!winbindd_idmap_get_rid_from_uid(state->request.data.uid,
 193                                              &user_rid, &domain)) {
 194                 DEBUG(1, ("Could not convert uid %d to rid\n",
 195                           state->request.data.uid));
 196                 return WINBINDD_ERROR;
 197         }
 198
 199         /* Construct sid and return it */
 200
 201         sid_copy(&sid, &domain->sid);
 202         sid_append_rid(&sid, user_rid);
 203         sid_to_string(state->response.data.sid.sid, &sid);
 204         state->response.data.sid.type = SID_NAME_USER;
 205
 206         return WINBINDD_OK;
 207 }
 208
 209 /* Convert a gid to a sid */
 210
 211 enum winbindd_result winbindd_gid_to_sid(struct winbindd_cli_state *state)
 212 {
 213         struct winbindd_domain *domain;
 214         uint32 group_rid;
 215         DOM_SID sid;
 216
 217         /* Bug out if the gid isn't in the winbind range */
 218
 219         if ((state->request.data.gid < server_state.gid_low) ||
 220             (state->request.data.gid > server_state.gid_high)) {
 221                 return WINBINDD_ERROR;
 222         }
 223
 224         DEBUG(3, ("[%5d]: gid to sid %d\n", state->pid,
 225                   state->request.data.gid));
 226
 227         /* Lookup rid for this uid */
 228
 229         if (!winbindd_idmap_get_rid_from_gid(state->request.data.gid,
 230                                              &group_rid, &domain)) {
 231                 DEBUG(1, ("Could not convert gid %d to rid\n",
 232                           state->request.data.gid));
 233                 return WINBINDD_ERROR;
 234         }
 235
 236         /* Construct sid and return it */
 237
 238         sid_copy(&sid, &domain->sid);
 239         sid_append_rid(&sid, group_rid);
 240         sid_to_string(state->response.data.sid.sid, &sid);
 241         state->response.data.sid.type = SID_NAME_DOM_GRP;
 242
 243         return WINBINDD_OK;
 244 }