source4/nsswitch/winbindd_sid.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Winbind daemon - sid related functions
   5
   6    Copyright (C) Tim Potter 2000
   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 2 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, write to the Free Software
  20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21 */
  22
  23 #include "winbindd.h"
  24
  25 #undef DBGC_CLASS
  26 #define DBGC_CLASS DBGC_WINBIND
  27
  28 /* Convert a string  */
  29
  30 enum winbindd_result winbindd_lookupsid(struct winbindd_cli_state *state)
  31 {
  32         extern DOM_SID global_sid_Builtin;
  33         enum SID_NAME_USE type;
  34         DOM_SID sid, tmp_sid;
  35         uint32 rid;
  36         fstring name;
  37         fstring dom_name;
  38
  39         /* Ensure null termination */
  40         state->request.data.sid[sizeof(state->request.data.sid)-1]='\0';
  41
  42         DEBUG(3, ("[%5d]: lookupsid %s\n", state->pid,
  43                   state->request.data.sid));
  44
  45         /* Lookup sid from PDC using lsa_lookup_sids() */
  46
  47         if (!string_to_sid(&sid, state->request.data.sid)) {
  48                 DEBUG(5, ("%s not a SID\n", state->request.data.sid));
  49                 return WINBINDD_ERROR;
  50         }
  51
  52         /* Don't look up BUILTIN sids */
  53
  54         sid_copy(&tmp_sid, &sid);
  55         sid_split_rid(&tmp_sid, &rid);
  56
  57         if (sid_equal(&tmp_sid, &global_sid_Builtin)) {
  58                 return WINBINDD_ERROR;
  59         }
  60
  61         /* Lookup the sid */
  62
  63         if (!winbindd_lookup_name_by_sid(&sid, dom_name, name, &type)) {
  64                 return WINBINDD_ERROR;
  65         }
  66
  67         fstrcpy(state->response.data.name.dom_name, dom_name);
  68         fstrcpy(state->response.data.name.name, name);
  69
  70         state->response.data.name.type = type;
  71
  72         return WINBINDD_OK;
  73 }
  74
  75
  76 /**
  77  * Look up the SID for a qualified name.
  78  **/
  79 enum winbindd_result winbindd_lookupname(struct winbindd_cli_state *state)
  80 {
  81         enum SID_NAME_USE type;
  82         fstring sid_str;
  83         char *name_domain, *name_user;
  84         DOM_SID sid;
  85         struct winbindd_domain *domain;
  86
  87         /* Ensure null termination */
  88         state->request.data.sid[sizeof(state->request.data.name.dom_name)-1]='\0';
  89
  90         /* Ensure null termination */
  91         state->request.data.sid[sizeof(state->request.data.name.name)-1]='\0';
  92
  93         DEBUG(3, ("[%5d]: lookupname %s%s%s\n", state->pid,
  94                   state->request.data.name.dom_name,
  95                   lp_winbind_separator(),
  96                   state->request.data.name.name));
  97
  98         name_domain = state->request.data.name.dom_name;
  99         name_user = state->request.data.name.name;
 100
 101         if ((domain = find_domain_from_name(name_domain)) == NULL) {
 102                 DEBUG(0, ("could not find domain entry for domain %s\n",
 103                           name_domain));
 104                 return WINBINDD_ERROR;
 105         }
 106
 107         /* Lookup name from PDC using lsa_lookup_names() */
 108         if (!winbindd_lookup_sid_by_name(domain, name_user, &sid, &type)) {
 109                 return WINBINDD_ERROR;
 110         }
 111
 112         sid_to_string(sid_str, &sid);
 113         fstrcpy(state->response.data.sid.sid, sid_str);
 114         state->response.data.sid.type = type;
 115
 116         return WINBINDD_OK;
 117 }
 118
 119 /* Convert a sid to a uid.  We assume we only have one rid attached to the
 120    sid. */
 121
 122 enum winbindd_result winbindd_sid_to_uid(struct winbindd_cli_state *state)
 123 {
 124         DOM_SID sid;
 125
 126         /* Ensure null termination */
 127         state->request.data.sid[sizeof(state->request.data.sid)-1]='\0';
 128
 129         DEBUG(3, ("[%5d]: sid to uid %s\n", state->pid,
 130                   state->request.data.sid));
 131
 132         /* Split sid into domain sid and user rid */
 133         if (!string_to_sid(&sid, state->request.data.sid)) {
 134                 DEBUG(1, ("Could not get convert sid %s from string\n",
 135                           state->request.data.sid));
 136                 return WINBINDD_ERROR;
 137         }
 138
 139         /* Find uid for this sid and return it */
 140         if (!winbindd_idmap_get_uid_from_sid(&sid, &state->response.data.uid)) {
 141                 DEBUG(1, ("Could not get uid for sid %s\n",
 142                           state->request.data.sid));
 143                 return WINBINDD_ERROR;
 144         }
 145
 146         return WINBINDD_OK;
 147 }
 148
 149 /* Convert a sid to a gid.  We assume we only have one rid attached to the
 150    sid.*/
 151
 152 enum winbindd_result winbindd_sid_to_gid(struct winbindd_cli_state *state)
 153 {
 154         DOM_SID sid;
 155
 156         /* Ensure null termination */
 157         state->request.data.sid[sizeof(state->request.data.sid)-1]='\0';
 158
 159         DEBUG(3, ("[%5d]: sid to gid %s\n", state->pid,
 160                   state->request.data.sid));
 161
 162         if (!string_to_sid(&sid, state->request.data.sid)) {
 163                 DEBUG(1, ("Could not cvt string to sid %s\n",
 164                           state->request.data.sid));
 165                 return WINBINDD_ERROR;
 166         }
 167
 168         /* Find gid for this sid and return it */
 169         if (!winbindd_idmap_get_gid_from_sid(&sid, &state->response.data.gid)) {
 170                 DEBUG(1, ("Could not get gid for sid %s\n",
 171                           state->request.data.sid));
 172                 return WINBINDD_ERROR;
 173         }
 174
 175         return WINBINDD_OK;
 176 }
 177
 178 /* Convert a uid to a sid */
 179
 180 enum winbindd_result winbindd_uid_to_sid(struct winbindd_cli_state *state)
 181 {
 182         DOM_SID sid;
 183
 184         /* Bug out if the uid isn't in the winbind range */
 185
 186         if ((state->request.data.uid < server_state.uid_low ) ||
 187             (state->request.data.uid > server_state.uid_high)) {
 188                 return WINBINDD_ERROR;
 189         }
 190
 191         DEBUG(3, ("[%5d]: uid to sid %d\n", state->pid,
 192                   state->request.data.uid));
 193
 194         /* Lookup rid for this uid */
 195         if (!winbindd_idmap_get_sid_from_uid(state->request.data.uid, &sid)) {
 196                 DEBUG(1, ("Could not convert uid %d to rid\n",
 197                           state->request.data.uid));
 198                 return WINBINDD_ERROR;
 199         }
 200
 201         sid_to_string(state->response.data.sid.sid, &sid);
 202         state->response.data.sid.type = SID_NAME_USER;
 203
 204         return WINBINDD_OK;
 205 }
 206
 207 /* Convert a gid to a sid */
 208
 209 enum winbindd_result winbindd_gid_to_sid(struct winbindd_cli_state *state)
 210 {
 211         DOM_SID sid;
 212
 213         /* Bug out if the gid isn't in the winbind range */
 214
 215         if ((state->request.data.gid < server_state.gid_low) ||
 216             (state->request.data.gid > server_state.gid_high)) {
 217                 return WINBINDD_ERROR;
 218         }
 219
 220         DEBUG(3, ("[%5d]: gid to sid %d\n", state->pid,
 221                   state->request.data.gid));
 222
 223         /* Lookup sid for this uid */
 224         if (!winbindd_idmap_get_sid_from_gid(state->request.data.gid, &sid)) {
 225                 DEBUG(1, ("Could not convert gid %d to sid\n",
 226                           state->request.data.gid));
 227                 return WINBINDD_ERROR;
 228         }
 229
 230         /* Construct sid and return it */
 231         sid_to_string(state->response.data.sid.sid, &sid);
 232         state->response.data.sid.type = SID_NAME_DOM_GRP;
 233
 234         return WINBINDD_OK;
 235 }