source3/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, ("[%5lu]: lookupsid %s\n", (unsigned long)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, ("[%5lu]: lookupname %s%s%s\n", (unsigned long)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         uint32 flags = 0x0;
 126
 127         /* Ensure null termination */
 128         state->request.data.sid[sizeof(state->request.data.sid)-1]='\0';
 129
 130         DEBUG(3, ("[%5lu]: sid to uid %s\n", (unsigned long)state->pid,
 131                   state->request.data.sid));
 132
 133         /* Split sid into domain sid and user rid */
 134         if (!string_to_sid(&sid, state->request.data.sid)) {
 135                 DEBUG(1, ("Could not get convert sid %s from string\n", state->request.data.sid));
 136                 return WINBINDD_ERROR;
 137         }
 138
 139         if ( state->request.flags & WBFLAG_QUERY_ONLY )
 140                 flags = ID_QUERY_ONLY;
 141
 142         /* Find uid for this sid and return it */
 143         if ( !NT_STATUS_IS_OK(idmap_sid_to_uid(&sid, &(state->response.data.uid), flags)) ) {
 144                 DEBUG(1, ("Could not get uid for sid %s\n", state->request.data.sid));
 145                 return WINBINDD_ERROR;
 146         }
 147
 148         return WINBINDD_OK;
 149 }
 150
 151 /* Convert a sid to a gid.  We assume we only have one rid attached to the
 152    sid.*/
 153
 154 enum winbindd_result winbindd_sid_to_gid(struct winbindd_cli_state *state)
 155 {
 156         DOM_SID sid;
 157         uint32 flags = 0x0;
 158
 159         /* Ensure null termination */
 160         state->request.data.sid[sizeof(state->request.data.sid)-1]='\0';
 161
 162         DEBUG(3, ("[%5lu]: sid to gid %s\n", (unsigned long)state->pid,
 163                   state->request.data.sid));
 164
 165         if (!string_to_sid(&sid, state->request.data.sid)) {
 166                 DEBUG(1, ("Could not cvt string to sid %s\n", state->request.data.sid));
 167                 return WINBINDD_ERROR;
 168         }
 169
 170         if ( state->request.flags & WBFLAG_QUERY_ONLY )
 171                 flags = ID_QUERY_ONLY;
 172
 173         /* Find gid for this sid and return it */
 174         if ( !NT_STATUS_IS_OK(idmap_sid_to_gid(&sid, &(state->response.data.gid), flags)) ) {
 175                 DEBUG(1, ("Could not get gid for sid %s\n", state->request.data.sid));
 176                 return WINBINDD_ERROR;
 177         }
 178
 179         return WINBINDD_OK;
 180 }
 181
 182 /* Convert a uid to a sid */
 183
 184 enum winbindd_result winbindd_uid_to_sid(struct winbindd_cli_state *state)
 185 {
 186         DOM_SID sid;
 187
 188 #if 0   /* JERRY */
 189         /* we cannot do this check this anymore since a domain member of
 190            a Samba domain may share unix accounts via NIS or LDAP.  In this
 191            case the uid/gid will be out of winbindd's range but still might
 192            be resolved to a SID via an ldap idmap backend */
 193
 194         if ((state->request.data.uid < server_state.uid_low ) ||
 195             (state->request.data.uid > server_state.uid_high)) {
 196                 return WINBINDD_ERROR;
 197         }
 198 #endif
 199
 200         DEBUG(3, ("[%5lu]: uid to sid %lu\n", (unsigned long)state->pid,
 201                   (unsigned long)state->request.data.uid));
 202
 203         /* Lookup rid for this uid */
 204         if (!NT_STATUS_IS_OK(idmap_uid_to_sid(&sid, state->request.data.uid))) {
 205                 DEBUG(1, ("Could not convert uid %lu to rid\n",
 206                           (unsigned long)state->request.data.uid));
 207                 return WINBINDD_ERROR;
 208         }
 209
 210         sid_to_string(state->response.data.sid.sid, &sid);
 211         state->response.data.sid.type = SID_NAME_USER;
 212
 213         return WINBINDD_OK;
 214 }
 215
 216 /* Convert a gid to a sid */
 217
 218 enum winbindd_result winbindd_gid_to_sid(struct winbindd_cli_state *state)
 219 {
 220         DOM_SID sid;
 221
 222 #if 0   /* JERRY */
 223         /* we cannot do this check this anymore since a domain member of
 224            a Samba domain may share unix accounts via NIS or LDAP.  In this
 225            case the uid/gid will be out of winbindd's range but still might
 226            be resolved to a SID via an ldap idmap backend */
 227
 228         if ((state->request.data.gid < server_state.gid_low) ||
 229             (state->request.data.gid > server_state.gid_high)) {
 230                 return WINBINDD_ERROR;
 231         }
 232 #endif
 233
 234         DEBUG(3, ("[%5lu]: gid to sid %lu\n", (unsigned long)state->pid,
 235                   (unsigned long)state->request.data.gid));
 236
 237         /* Lookup sid for this uid */
 238         if (!NT_STATUS_IS_OK(idmap_gid_to_sid(&sid, state->request.data.gid))) {
 239                 DEBUG(1, ("Could not convert gid %lu to sid\n",
 240                           (unsigned long)state->request.data.gid));
 241                 return WINBINDD_ERROR;
 242         }
 243
 244         /* Construct sid and return it */
 245         sid_to_string(state->response.data.sid.sid, &sid);
 246         state->response.data.sid.type = SID_NAME_DOM_GRP;
 247
 248         return WINBINDD_OK;
 249 }