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winbindd_sid.c

/* 
   Unix SMB/CIFS implementation.

   Winbind daemon - sid related functions

   Copyright (C) Tim Potter 2000
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include "winbindd.h"
#include "sids.h"

/* Convert a string  */

enum winbindd_result winbindd_lookupsid(struct winbindd_cli_state *state)
{
      extern DOM_SID global_sid_Builtin;
      enum SID_NAME_USE type;
      DOM_SID sid, tmp_sid;
      uint32 rid;
      fstring name;
      fstring dom_name;

      DEBUG(3, ("[%5d]: lookupsid %s\n", state->pid, 
              state->request.data.sid));

      /* Lookup sid from PDC using lsa_lookup_sids() */

      if (!string_to_sid(&sid, state->request.data.sid)) {
            DEBUG(5, ("%s not a SID\n", state->request.data.sid));
            return WINBINDD_ERROR;
      }

      /* Don't look up BUILTIN sids */

      sid_copy(&tmp_sid, &sid);
      sid_split_rid(&tmp_sid, &rid);

      if (sid_equal(&tmp_sid, &global_sid_Builtin)) {
            return WINBINDD_ERROR;
      }

      /* Lookup the sid */

      if (!winbindd_lookup_name_by_sid(&sid, dom_name, name, &type)) {
            return WINBINDD_ERROR;
      }

      fstrcpy(state->response.data.name.dom_name, dom_name);
      dos_to_unix(state->response.data.name.name, name);

      state->response.data.name.type = type;

      return WINBINDD_OK;
}

/* Convert a sid to a string */

enum winbindd_result winbindd_lookupname(struct winbindd_cli_state *state)
{
      enum SID_NAME_USE type;
      fstring sid_str;
      char *name_domain, *name_user;
      DOM_SID sid;
      struct winbindd_domain *domain;

      DEBUG(3, ("[%5d]: lookupname %s%s%s\n", state->pid,
              state->request.data.name.dom_name, 
              lp_winbind_separator(),
              state->request.data.name.name));

      name_domain = state->request.data.name.dom_name;
      name_user = state->request.data.name.name;

      if ((domain = find_domain_from_name(name_domain)) == NULL) {
            DEBUG(0, ("could not find domain entry for domain %s\n", 
                    name_domain));
            return WINBINDD_ERROR;
      }

      /* Lookup name from PDC using lsa_lookup_names() */
      if (!winbindd_lookup_sid_by_name(domain, name_user, &sid, &type)) {
            return WINBINDD_ERROR;
      }

      sid_to_string(sid_str, &sid);
      fstrcpy(state->response.data.sid.sid, sid_str);
      state->response.data.sid.type = type;

      return WINBINDD_OK;
}

/* Convert a sid to a uid.  We assume we only have one rid attached to the
   sid. */

enum winbindd_result winbindd_sid_to_uid(struct winbindd_cli_state *state)
{
      DOM_SID sid;

      DEBUG(3, ("[%5d]: sid to uid %s\n", state->pid,
              state->request.data.sid));

      /* Split sid into domain sid and user rid */
      if (!string_to_sid(&sid, state->request.data.sid)) {
            DEBUG(1, ("Could not get convert sid %s from string\n",
                    state->request.data.sid));
            return WINBINDD_ERROR;
      }

      /* Find uid for this sid and return it */
      if (!winbindd_idmap_get_uid_from_sid(&sid, &state->response.data.uid)) {
            DEBUG(1, ("Could not get uid for sid %s\n",
                    state->request.data.sid));
            return WINBINDD_ERROR;
      }

      return WINBINDD_OK;
}

/* Convert a sid to a gid.  We assume we only have one rid attached to the
   sid.*/

enum winbindd_result winbindd_sid_to_gid(struct winbindd_cli_state *state)
{
      DOM_SID sid;

      DEBUG(3, ("[%5d]: sid to gid %s\n", state->pid, 
              state->request.data.sid));

      if (!string_to_sid(&sid, state->request.data.sid)) {
            DEBUG(1, ("Could not cvt string to sid %s\n",
                    state->request.data.sid));
            return WINBINDD_ERROR;
      }

      /* Find gid for this sid and return it */
      if (!winbindd_idmap_get_gid_from_sid(&sid, &state->response.data.gid)) {
            DEBUG(1, ("Could not get gid for sid %s\n",
                    state->request.data.sid));
            return WINBINDD_ERROR;
      }

      return WINBINDD_OK;
}

/* Convert a uid to a sid */

enum winbindd_result winbindd_uid_to_sid(struct winbindd_cli_state *state)
{
      DOM_SID sid;

      /* Bug out if the uid isn't in the winbind range */

      if ((state->request.data.uid < server_state.uid_low ) ||
          (state->request.data.uid > server_state.uid_high)) {
            return WINBINDD_ERROR;
      }

      DEBUG(3, ("[%5d]: uid to sid %d\n", state->pid, 
              state->request.data.uid));

      /* Lookup rid for this uid */
      if (!winbindd_idmap_get_sid_from_uid(state->request.data.uid, &sid)) {
            DEBUG(1, ("Could not convert uid %d to rid\n",
                    state->request.data.uid));
            return WINBINDD_ERROR;
      }

      sid_to_string(state->response.data.sid.sid, &sid);
      state->response.data.sid.type = SID_NAME_USER;

      return WINBINDD_OK;
}

/* Convert a gid to a sid */

enum winbindd_result winbindd_gid_to_sid(struct winbindd_cli_state *state)
{
      DOM_SID sid;

      /* Bug out if the gid isn't in the winbind range */

      if ((state->request.data.gid < server_state.gid_low) ||
          (state->request.data.gid > server_state.gid_high)) {
            return WINBINDD_ERROR;
      }

      DEBUG(3, ("[%5d]: gid to sid %d\n", state->pid,
              state->request.data.gid));

      /* Lookup sid for this uid */
      if (!winbindd_idmap_get_sid_from_gid(state->request.data.gid, &sid)) {
            DEBUG(1, ("Could not convert gid %d to sid\n",
                    state->request.data.gid));
            return WINBINDD_ERROR;
      }

      /* Construct sid and return it */
      sid_to_string(state->response.data.sid.sid, &sid);
      state->response.data.sid.type = SID_NAME_DOM_GRP;

      return WINBINDD_OK;
}

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