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https://github.com/samba-team/samba.git
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64fec465c1
Signed-off-by: Michael Adam <obnox@samba.org>
931 lines
23 KiB
C
931 lines
23 KiB
C
/*
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* idmap_autorid: static map between Active Directory/NT RIDs
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* and RFC 2307 accounts
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*
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* based on the idmap_rid module, but this module defines the ranges
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* for the domains by automatically allocating a range for each domain
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*
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* Copyright (C) Christian Ambach, 2010-2012
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "includes.h"
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#include "system/filesys.h"
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#include "winbindd.h"
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#include "dbwrap/dbwrap.h"
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#include "dbwrap/dbwrap_open.h"
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#include "idmap.h"
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#include "idmap_rw.h"
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#include "../libcli/security/dom_sid.h"
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#include "util_tdb.h"
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#include "winbindd/idmap_tdb_common.h"
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#undef DBGC_CLASS
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#define DBGC_CLASS DBGC_IDMAP
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#define HWM "NEXT RANGE"
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#define ALLOC_HWM_UID "NEXT ALLOC UID"
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#define ALLOC_HWM_GID "NEXT ALLOC GID"
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#define ALLOC_RANGE "ALLOC"
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#define CONFIGKEY "CONFIG"
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struct autorid_global_config {
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uint32_t minvalue;
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uint32_t rangesize;
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uint32_t maxranges;
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bool ignore_builtin;
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};
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struct autorid_domain_config {
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fstring sid;
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uint32_t domainnum;
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struct autorid_global_config *globalcfg;
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};
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/* handle to the tdb storing domain <-> range assignments */
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static struct db_context *autorid_db;
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static NTSTATUS idmap_autorid_get_domainrange_action(struct db_context *db,
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void *private_data)
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{
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NTSTATUS ret;
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uint32_t domainnum, hwm;
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char *numstr;
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struct autorid_domain_config *cfg;
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cfg = (struct autorid_domain_config *)private_data;
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ret = dbwrap_fetch_uint32_bystring(db, cfg->sid, &(cfg->domainnum));
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if (NT_STATUS_IS_OK(ret)) {
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/* entry is already present*/
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return ret;
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}
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DEBUG(10, ("Acquiring new range for domain %s\n", cfg->sid));
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/* fetch the current HWM */
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ret = dbwrap_fetch_uint32_bystring(db, HWM, &hwm);
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if (!NT_STATUS_IS_OK(ret)) {
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DEBUG(1, ("Fatal error while fetching current "
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"HWM value: %s\n", nt_errstr(ret)));
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ret = NT_STATUS_INTERNAL_ERROR;
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goto error;
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}
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/* do we have a range left? */
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if (hwm >= cfg->globalcfg->maxranges) {
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DEBUG(1, ("No more domain ranges available!\n"));
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ret = NT_STATUS_NO_MEMORY;
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goto error;
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}
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/* increase the HWM */
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ret = dbwrap_change_uint32_atomic_bystring(db, HWM, &domainnum, 1);
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if (!NT_STATUS_IS_OK(ret)) {
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DEBUG(1, ("Fatal error while fetching a new "
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"domain range value!\n"));
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goto error;
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}
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/* store away the new mapping in both directions */
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ret = dbwrap_store_uint32_bystring(db, cfg->sid, domainnum);
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if (!NT_STATUS_IS_OK(ret)) {
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DEBUG(1, ("Fatal error while storing new "
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"domain->range assignment!\n"));
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goto error;
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}
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numstr = talloc_asprintf(db, "%u", domainnum);
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if (!numstr) {
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ret = NT_STATUS_NO_MEMORY;
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goto error;
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}
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ret = dbwrap_store_bystring(db, numstr,
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string_term_tdb_data(cfg->sid), TDB_INSERT);
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talloc_free(numstr);
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if (!NT_STATUS_IS_OK(ret)) {
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DEBUG(1, ("Fatal error while storing "
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"new domain->range assignment!\n"));
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goto error;
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}
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DEBUG(5, ("Acquired new range #%d for domain %s\n",
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domainnum, cfg->sid));
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cfg->domainnum = domainnum;
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return NT_STATUS_OK;
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error:
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return ret;
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}
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static NTSTATUS idmap_autorid_get_domainrange(struct autorid_domain_config *dom,
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bool read_only)
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{
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NTSTATUS ret;
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/*
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* try to find mapping without locking the database,
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* if it is not found create a mapping in a transaction unless
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* read-only mode has been set
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*/
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ret = dbwrap_fetch_uint32_bystring(autorid_db, dom->sid,
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&(dom->domainnum));
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if (!NT_STATUS_IS_OK(ret)) {
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if (read_only) {
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return NT_STATUS_NOT_FOUND;
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}
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ret = dbwrap_trans_do(autorid_db,
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idmap_autorid_get_domainrange_action, dom);
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}
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DEBUG(10, ("Using range #%d for domain %s\n", dom->domainnum,
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dom->sid));
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return ret;
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}
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static NTSTATUS idmap_autorid_allocate_id(struct idmap_domain *dom,
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struct unixid *xid) {
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NTSTATUS ret;
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struct idmap_tdb_common_context *commoncfg;
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struct autorid_global_config *globalcfg;
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struct autorid_domain_config domaincfg;
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commoncfg =
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talloc_get_type_abort(dom->private_data,
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struct idmap_tdb_common_context);
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globalcfg = talloc_get_type(commoncfg->private_data,
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struct autorid_global_config);
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if (dom->read_only) {
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DEBUG(3, ("Backend is read-only, refusing "
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"new allocation request\n"));
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return NT_STATUS_UNSUCCESSFUL;
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}
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/* fetch the range for the allocation pool */
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ZERO_STRUCT(domaincfg);
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domaincfg.globalcfg = globalcfg;
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fstrcpy(domaincfg.sid, ALLOC_RANGE);
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ret = idmap_autorid_get_domainrange(&domaincfg, dom->read_only);
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if (!NT_STATUS_IS_OK(ret)) {
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DEBUG(3, ("Could not determine range for allocation pool, "
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"check previous messages for reason\n"));
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return ret;
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}
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ret = idmap_tdb_common_get_new_id(dom, xid);
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if (!NT_STATUS_IS_OK(ret)) {
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DEBUG(1, ("Fatal error while allocating new ID!\n"));
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return ret;
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}
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xid->id = globalcfg->minvalue +
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globalcfg->rangesize * domaincfg.domainnum +
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xid->id;
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DEBUG(10, ("Returned new %s %d from allocation range\n",
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(xid->type==ID_TYPE_UID)?"uid":"gid", xid->id));
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return ret;
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}
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/*
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* map a SID to xid using the idmap_tdb like pool
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*/
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static NTSTATUS idmap_autorid_map_id_to_sid(struct idmap_domain *dom,
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struct id_map *map)
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{
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NTSTATUS ret;
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/* look out for the mapping */
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ret = idmap_tdb_common_unixid_to_sid(dom, map);
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if (NT_STATUS_IS_OK(ret)) {
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map->status = ID_MAPPED;
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return ret;
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}
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map->status = ID_UNKNOWN;
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DEBUG(10, ("no ID->SID mapping for %d could be found\n", map->xid.id));
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return ret;
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}
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static NTSTATUS idmap_autorid_id_to_sid(struct autorid_global_config *cfg,
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struct idmap_domain *dom,
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struct id_map *map)
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{
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uint32_t range;
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TDB_DATA data;
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char *keystr;
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struct dom_sid sid;
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NTSTATUS status;
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/* can this be one of our ids? */
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if (map->xid.id < cfg->minvalue) {
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DEBUG(10, ("id %d is lower than minimum value, "
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"ignoring mapping request\n", map->xid.id));
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map->status = ID_UNKNOWN;
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return NT_STATUS_OK;
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}
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if (map->xid.id > (cfg->minvalue + cfg->rangesize * cfg->maxranges)) {
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DEBUG(10, ("id %d is outside of maximum id value, "
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"ignoring mapping request\n", map->xid.id));
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map->status = ID_UNKNOWN;
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return NT_STATUS_OK;
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}
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/* determine the range of this uid */
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range = ((map->xid.id - cfg->minvalue) / cfg->rangesize);
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keystr = talloc_asprintf(talloc_tos(), "%u", range);
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if (!keystr) {
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return NT_STATUS_NO_MEMORY;
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}
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status = dbwrap_fetch_bystring(autorid_db, talloc_tos(), keystr, &data);
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TALLOC_FREE(keystr);
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if (!NT_STATUS_IS_OK(status)) {
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DEBUG(4, ("id %d belongs to range %d which does not have "
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"domain mapping, ignoring mapping request\n",
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map->xid.id, range));
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TALLOC_FREE(data.dptr);
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map->status = ID_UNKNOWN;
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return NT_STATUS_OK;
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}
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if (strncmp((const char *)data.dptr,
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ALLOC_RANGE,
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strlen(ALLOC_RANGE)) == 0) {
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/*
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* this is from the alloc range, check if there is a mapping
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*/
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DEBUG(5, ("id %d belongs to allocation range, "
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"checking for mapping\n",
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map->xid.id));
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TALLOC_FREE(data.dptr);
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return idmap_autorid_map_id_to_sid(dom, map);
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}
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string_to_sid(&sid, (const char *)data.dptr);
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TALLOC_FREE(data.dptr);
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sid_compose(map->sid, &sid,
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(map->xid.id - cfg->minvalue -
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range * cfg->rangesize));
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/* We **really** should have some way of validating
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the SID exists and is the correct type here. But
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that is a deficiency in the idmap_rid design. */
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map->status = ID_MAPPED;
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return NT_STATUS_OK;
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}
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/**********************************
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Single sid to id lookup function.
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**********************************/
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static NTSTATUS idmap_autorid_sid_to_id(struct autorid_global_config *global,
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struct autorid_domain_config *domain,
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struct id_map *map)
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{
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uint32_t rid;
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sid_peek_rid(map->sid, &rid);
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/* if the rid is higher than the size of the range, we cannot map it */
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if (rid >= global->rangesize) {
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map->status = ID_UNKNOWN;
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DEBUG(2, ("RID %d is larger then size of range (%d), "
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"user cannot be mapped\n", rid, global->rangesize));
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return NT_STATUS_UNSUCCESSFUL;
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}
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map->xid.id = global->minvalue +
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(global->rangesize * domain->domainnum)+rid;
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|
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/* We **really** should have some way of validating
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the SID exists and is the correct type here. But
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that is a deficiency in the idmap_rid design. */
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map->status = ID_MAPPED;
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return NT_STATUS_OK;
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}
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/**********************************
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lookup a set of unix ids.
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**********************************/
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static NTSTATUS idmap_autorid_unixids_to_sids(struct idmap_domain *dom,
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struct id_map **ids)
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{
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struct idmap_tdb_common_context *commoncfg;
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struct autorid_global_config *globalcfg;
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NTSTATUS ret;
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int i;
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int num_tomap = 0;
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int num_mapped = 0;
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|
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/* initialize the status to avoid surprise */
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for (i = 0; ids[i]; i++) {
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ids[i]->status = ID_UNKNOWN;
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num_tomap++;
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}
|
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commoncfg =
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talloc_get_type_abort(dom->private_data,
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struct idmap_tdb_common_context);
|
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|
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globalcfg = talloc_get_type(commoncfg->private_data,
|
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struct autorid_global_config);
|
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|
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for (i = 0; ids[i]; i++) {
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ret = idmap_autorid_id_to_sid(globalcfg, dom, ids[i]);
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|
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if ((!NT_STATUS_IS_OK(ret)) &&
|
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(!NT_STATUS_EQUAL(ret, NT_STATUS_NONE_MAPPED))) {
|
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/* some fatal error occurred, log it */
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DEBUG(3, ("Unexpected error resolving an ID "
|
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" (%d)\n", ids[i]->xid.id));
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goto failure;
|
|
}
|
|
|
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if (NT_STATUS_IS_OK(ret) && ids[i]->status == ID_MAPPED) {
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num_mapped++;
|
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}
|
|
|
|
}
|
|
|
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if (num_tomap == num_mapped) {
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return NT_STATUS_OK;
|
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} else if (num_mapped == 0) {
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return NT_STATUS_NONE_MAPPED;
|
|
}
|
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|
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return STATUS_SOME_UNMAPPED;
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|
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failure:
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return ret;
|
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}
|
|
|
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/*
|
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* map a SID to xid using the idmap_tdb like pool
|
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*/
|
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static NTSTATUS idmap_autorid_map_sid_to_id(struct idmap_domain *dom,
|
|
struct id_map *map,
|
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struct idmap_tdb_common_context *ctx)
|
|
{
|
|
NTSTATUS ret;
|
|
int res;
|
|
|
|
/* see if we already have a mapping */
|
|
ret = idmap_tdb_common_sid_to_unixid(dom, map);
|
|
|
|
if (NT_STATUS_IS_OK(ret)) {
|
|
map->status = ID_MAPPED;
|
|
return ret;
|
|
}
|
|
|
|
/* bad things happened */
|
|
if (!NT_STATUS_EQUAL(ret, NT_STATUS_NONE_MAPPED)) {
|
|
DEBUG(1, ("Looking up SID->ID mapping for %s failed\n",
|
|
sid_string_dbg(map->sid)));
|
|
return ret;
|
|
}
|
|
|
|
if (dom->read_only) {
|
|
DEBUG(3, ("Not allocating new mapping for %s, because backend "
|
|
"is read-only\n", sid_string_dbg(map->sid)));
|
|
return NT_STATUS_NONE_MAPPED;
|
|
}
|
|
|
|
DEBUG(10, ("Creating new mapping in pool for %s\n",
|
|
sid_string_dbg(map->sid)));
|
|
|
|
/* create new mapping */
|
|
res = dbwrap_transaction_start(ctx->db);
|
|
if (res != 0) {
|
|
DEBUG(2, ("transaction_start failed\n"));
|
|
return NT_STATUS_INTERNAL_DB_CORRUPTION;
|
|
}
|
|
|
|
ret = idmap_tdb_common_new_mapping(dom, map);
|
|
|
|
map->status = (NT_STATUS_IS_OK(ret))?ID_MAPPED:ID_UNMAPPED;
|
|
|
|
if (!NT_STATUS_IS_OK(ret)) {
|
|
if (dbwrap_transaction_cancel(ctx->db) != 0) {
|
|
smb_panic("Cancelling transaction failed");
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
res = dbwrap_transaction_commit(ctx->db);
|
|
if (res == 0) {
|
|
return ret;
|
|
}
|
|
|
|
DEBUG(2, ("transaction_commit failed\n"));
|
|
return NT_STATUS_INTERNAL_DB_CORRUPTION;
|
|
|
|
}
|
|
|
|
/**********************************
|
|
lookup a set of sids.
|
|
**********************************/
|
|
|
|
static NTSTATUS idmap_autorid_sids_to_unixids(struct idmap_domain *dom,
|
|
struct id_map **ids)
|
|
{
|
|
struct idmap_tdb_common_context *commoncfg;
|
|
struct autorid_global_config *global;
|
|
NTSTATUS ret;
|
|
int i;
|
|
int num_tomap = 0;
|
|
int num_mapped = 0;
|
|
|
|
/* initialize the status to avoid surprise */
|
|
for (i = 0; ids[i]; i++) {
|
|
ids[i]->status = ID_UNKNOWN;
|
|
num_tomap++;
|
|
}
|
|
|
|
commoncfg =
|
|
talloc_get_type_abort(dom->private_data,
|
|
struct idmap_tdb_common_context);
|
|
|
|
global = talloc_get_type(commoncfg->private_data,
|
|
struct autorid_global_config);
|
|
|
|
for (i = 0; ids[i]; i++) {
|
|
struct winbindd_tdc_domain *domain;
|
|
struct autorid_domain_config domaincfg;
|
|
uint32_t rid;
|
|
struct dom_sid domainsid;
|
|
|
|
ZERO_STRUCT(domaincfg);
|
|
|
|
DEBUG(10, ("Trying to map %s\n", sid_string_dbg(ids[i]->sid)));
|
|
|
|
sid_copy(&domainsid, ids[i]->sid);
|
|
if (!sid_split_rid(&domainsid, &rid)) {
|
|
DEBUG(4, ("Could not determine domain SID from %s, "
|
|
"ignoring mapping request\n",
|
|
sid_string_dbg(ids[i]->sid)));
|
|
continue;
|
|
}
|
|
|
|
/* is this a well-known SID? */
|
|
|
|
if (sid_check_is_wellknown_domain(&domainsid, NULL)) {
|
|
|
|
DEBUG(10, ("SID %s is well-known, using pool\n",
|
|
sid_string_dbg(ids[i]->sid)));
|
|
|
|
ret = idmap_autorid_map_sid_to_id(dom, ids[i],
|
|
commoncfg);
|
|
|
|
if (!NT_STATUS_IS_OK(ret) &&
|
|
!NT_STATUS_EQUAL(ret, NT_STATUS_NONE_MAPPED)) {
|
|
DEBUG(3, ("Unexpected error resolving "
|
|
"SID (%s)\n",
|
|
sid_string_dbg(ids[i]->sid)));
|
|
goto failure;
|
|
}
|
|
|
|
if (ids[i]->status == ID_MAPPED) {
|
|
num_mapped++;
|
|
}
|
|
|
|
continue;
|
|
}
|
|
|
|
/* BUILTIN is passdb's job */
|
|
if (dom_sid_equal(&domainsid, &global_sid_Builtin) &&
|
|
global->ignore_builtin) {
|
|
DEBUG(10, ("Ignoring request for BUILTIN domain\n"));
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Check if the domain is around
|
|
*/
|
|
domain = wcache_tdc_fetch_domainbysid(talloc_tos(),
|
|
&domainsid);
|
|
if (domain == NULL) {
|
|
DEBUG(10, ("Ignoring unknown domain sid %s\n",
|
|
sid_string_dbg(&domainsid)));
|
|
continue;
|
|
}
|
|
TALLOC_FREE(domain);
|
|
|
|
domaincfg.globalcfg = global;
|
|
sid_to_fstring(domaincfg.sid, &domainsid);
|
|
|
|
ret = idmap_autorid_get_domainrange(&domaincfg, dom->read_only);
|
|
|
|
/* read-only mode and a new domain range would be required? */
|
|
if (NT_STATUS_EQUAL(ret, NT_STATUS_NOT_FOUND) &&
|
|
dom->read_only) {
|
|
DEBUG(10, ("read-only is enabled, did not allocate "
|
|
"new range for domain %s\n",
|
|
sid_string_dbg(&domainsid)));
|
|
continue;
|
|
}
|
|
|
|
if (!NT_STATUS_IS_OK(ret)) {
|
|
DEBUG(3, ("Could not determine range for domain, "
|
|
"check previous messages for reason\n"));
|
|
goto failure;
|
|
}
|
|
|
|
ret = idmap_autorid_sid_to_id(global, &domaincfg, ids[i]);
|
|
|
|
if ((!NT_STATUS_IS_OK(ret)) &&
|
|
(!NT_STATUS_EQUAL(ret, NT_STATUS_NONE_MAPPED))) {
|
|
/* some fatal error occurred, log it */
|
|
DEBUG(3, ("Unexpected error resolving a SID (%s)\n",
|
|
sid_string_dbg(ids[i]->sid)));
|
|
goto failure;
|
|
}
|
|
|
|
if (NT_STATUS_IS_OK(ret)) {
|
|
num_mapped++;
|
|
}
|
|
}
|
|
|
|
if (num_tomap == num_mapped) {
|
|
return NT_STATUS_OK;
|
|
} else if (num_mapped == 0) {
|
|
return NT_STATUS_NONE_MAPPED;
|
|
}
|
|
|
|
return STATUS_SOME_UNMAPPED;
|
|
|
|
failure:
|
|
return ret;
|
|
|
|
}
|
|
|
|
/* initialize the given HWM to 0 if it does not exist yet */
|
|
static NTSTATUS idmap_autorid_init_hwm(const char *hwm) {
|
|
|
|
NTSTATUS status;
|
|
uint32_t hwmval;
|
|
|
|
status = dbwrap_fetch_uint32_bystring(autorid_db, hwm, &hwmval);
|
|
if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
|
|
status = dbwrap_trans_store_int32_bystring(autorid_db, hwm, 0);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(0,
|
|
("Unable to initialise HWM (%s) in autorid "
|
|
"database: %s\n", hwm, nt_errstr(status)));
|
|
return NT_STATUS_INTERNAL_DB_ERROR;
|
|
}
|
|
} else if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(0, ("unable to fetch HWM (%s) from autorid "
|
|
"database: %s\n", hwm, nt_errstr(status)));
|
|
return status;
|
|
}
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/*
|
|
* open and initialize the database which stores the ranges for the domains
|
|
*/
|
|
static NTSTATUS idmap_autorid_db_init(void)
|
|
{
|
|
NTSTATUS status;
|
|
|
|
if (autorid_db) {
|
|
/* its already open */
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/* Open idmap repository */
|
|
autorid_db = db_open(NULL, state_path("autorid.tdb"), 0,
|
|
TDB_DEFAULT, O_RDWR | O_CREAT, 0644,
|
|
DBWRAP_LOCK_ORDER_1);
|
|
|
|
if (!autorid_db) {
|
|
DEBUG(0, ("Unable to open idmap_autorid database '%s'\n",
|
|
state_path("autorid.tdb")));
|
|
return NT_STATUS_UNSUCCESSFUL;
|
|
}
|
|
|
|
/* Initialize high water mark for the currently used range to 0 */
|
|
|
|
status = idmap_autorid_init_hwm(HWM);
|
|
NT_STATUS_NOT_OK_RETURN(status);
|
|
|
|
status = idmap_autorid_init_hwm(ALLOC_HWM_UID);
|
|
NT_STATUS_NOT_OK_RETURN(status);
|
|
|
|
status = idmap_autorid_init_hwm(ALLOC_HWM_GID);
|
|
|
|
return status;
|
|
}
|
|
|
|
static struct autorid_global_config *idmap_autorid_loadconfig(TALLOC_CTX * ctx)
|
|
{
|
|
|
|
TDB_DATA data;
|
|
struct autorid_global_config *cfg;
|
|
unsigned long minvalue, rangesize, maxranges;
|
|
NTSTATUS status;
|
|
|
|
status = dbwrap_fetch_bystring(autorid_db, ctx, CONFIGKEY, &data);
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(10, ("No saved config found\n"));
|
|
return NULL;
|
|
}
|
|
|
|
cfg = talloc_zero(ctx, struct autorid_global_config);
|
|
if (!cfg) {
|
|
return NULL;
|
|
}
|
|
|
|
if (sscanf((char *)data.dptr,
|
|
"minvalue:%lu rangesize:%lu maxranges:%lu",
|
|
&minvalue, &rangesize, &maxranges) != 3) {
|
|
DEBUG(1,
|
|
("Found invalid configuration data"
|
|
"creating new config\n"));
|
|
return NULL;
|
|
}
|
|
|
|
cfg->minvalue = minvalue;
|
|
cfg->rangesize = rangesize;
|
|
cfg->maxranges = maxranges;
|
|
|
|
DEBUG(10, ("Loaded previously stored configuration "
|
|
"minvalue:%d rangesize:%d\n",
|
|
cfg->minvalue, cfg->rangesize));
|
|
|
|
return cfg;
|
|
|
|
}
|
|
|
|
static NTSTATUS idmap_autorid_saveconfig(struct autorid_global_config *cfg)
|
|
{
|
|
|
|
NTSTATUS status;
|
|
TDB_DATA data;
|
|
char *cfgstr;
|
|
|
|
cfgstr =
|
|
talloc_asprintf(talloc_tos(),
|
|
"minvalue:%u rangesize:%u maxranges:%u",
|
|
cfg->minvalue, cfg->rangesize, cfg->maxranges);
|
|
|
|
if (!cfgstr) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
data = string_tdb_data(cfgstr);
|
|
|
|
status = dbwrap_trans_store_bystring(autorid_db, CONFIGKEY,
|
|
data, TDB_REPLACE);
|
|
|
|
talloc_free(cfgstr);
|
|
|
|
return status;
|
|
}
|
|
|
|
static NTSTATUS idmap_autorid_preallocate_wellknown(struct idmap_domain *dom)
|
|
{
|
|
const char *groups[] = { "S-1-1-0", "S-1-2-0", "S-1-2-1",
|
|
"S-1-3-0", "S-1-3-1", "S-1-3-2", "S-1-3-3", "S-1-3-4",
|
|
"S-1-5-1", "S-1-5-2", "S-1-5-3", "S-1-5-4", "S-1-5-6",
|
|
"S-1-5-7", "S-1-5-8", "S-1-5-9", "S-1-5-10", "S-1-5-11",
|
|
"S-1-5-12", "S-1-5-13", "S-1-5-14", "S-1-5-15",
|
|
"S-1-5-17", "S-1-5-18", "S-1-5-19", "S-1-5-20"
|
|
};
|
|
|
|
struct id_map **maps;
|
|
int i, num;
|
|
NTSTATUS status;
|
|
|
|
if (dom->read_only) {
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
num = sizeof(groups)/sizeof(char*);
|
|
|
|
maps = talloc_zero_array(talloc_tos(), struct id_map*, num+1);
|
|
if (!maps) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
for (i = 0; i < num; i++) {
|
|
maps[i] = talloc(maps, struct id_map);
|
|
maps[i]->xid.type = ID_TYPE_GID;
|
|
maps[i]->sid = dom_sid_parse_talloc(maps, groups[i]);
|
|
}
|
|
|
|
maps[num] = NULL;
|
|
|
|
status = idmap_autorid_sids_to_unixids(dom, maps);
|
|
|
|
DEBUG(10,("Preallocation run finished with status %s\n",
|
|
nt_errstr(status)));
|
|
|
|
talloc_free(maps);
|
|
|
|
return NT_STATUS_IS_OK(status)?NT_STATUS_OK:NT_STATUS_UNSUCCESSFUL;
|
|
}
|
|
|
|
static NTSTATUS idmap_autorid_initialize(struct idmap_domain *dom)
|
|
{
|
|
struct idmap_tdb_common_context *commonconfig;
|
|
struct autorid_global_config *config;
|
|
struct autorid_global_config *storedconfig = NULL;
|
|
NTSTATUS status;
|
|
uint32_t hwm;
|
|
|
|
if (!strequal(dom->name, "*")) {
|
|
DEBUG(0, ("idmap_autorid_initialize: Error: autorid configured "
|
|
"for domain '%s'. But autorid can only be used for "
|
|
"the default idmap configuration.\n", dom->name));
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
commonconfig = talloc_zero(dom, struct idmap_tdb_common_context);
|
|
if (!commonconfig) {
|
|
DEBUG(0, ("Out of memory!\n"));
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
commonconfig->rw_ops = talloc_zero(commonconfig, struct idmap_rw_ops);
|
|
if (commonconfig->rw_ops == NULL) {
|
|
DEBUG(0, ("Out of memory!\n"));
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
config = talloc_zero(commonconfig, struct autorid_global_config);
|
|
if (!config) {
|
|
DEBUG(0, ("Out of memory!\n"));
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
status = idmap_autorid_db_init();
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto error;
|
|
}
|
|
|
|
config->minvalue = dom->low_id;
|
|
config->rangesize = lp_parm_int(-1, "idmap config *",
|
|
"rangesize", 100000);
|
|
|
|
if (config->rangesize < 2000) {
|
|
DEBUG(1, ("autorid rangesize must be at least 2000\n"));
|
|
status = NT_STATUS_INVALID_PARAMETER;
|
|
goto error;
|
|
}
|
|
|
|
config->maxranges = (dom->high_id - dom->low_id + 1) /
|
|
config->rangesize;
|
|
|
|
if (config->maxranges == 0) {
|
|
DEBUG(1, ("allowed uid range is smaller then rangesize, "
|
|
"increase uid range or decrease rangesize\n"));
|
|
status = NT_STATUS_INVALID_PARAMETER;
|
|
goto error;
|
|
}
|
|
|
|
/* check if the high-low limit is a multiple of the rangesize */
|
|
if ((dom->high_id - dom->low_id + 1) % config->rangesize != 0) {
|
|
DEBUG(5, ("High uid-low uid difference of %d "
|
|
"is not a multiple of the rangesize %d, "
|
|
"limiting ranges to lower boundary number of %d\n",
|
|
(dom->high_id - dom->low_id + 1), config->rangesize,
|
|
config->maxranges));
|
|
}
|
|
|
|
DEBUG(10, ("Current configuration in config is "
|
|
"minvalue:%d rangesize:%d maxranges:%d\n",
|
|
config->minvalue, config->rangesize, config->maxranges));
|
|
|
|
/* read previously stored config and current HWM */
|
|
storedconfig = idmap_autorid_loadconfig(talloc_tos());
|
|
|
|
status = dbwrap_fetch_uint32_bystring(autorid_db, HWM, &hwm);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(1, ("Fatal error while fetching current "
|
|
"HWM value: %s\n", nt_errstr(status)));
|
|
status = NT_STATUS_INTERNAL_ERROR;
|
|
goto error;
|
|
}
|
|
|
|
/* did the minimum value or rangesize change? */
|
|
if (storedconfig &&
|
|
((storedconfig->minvalue != config->minvalue) ||
|
|
(storedconfig->rangesize != config->rangesize))) {
|
|
DEBUG(1, ("New configuration values for rangesize or "
|
|
"minimum uid value conflict with previously "
|
|
"used values! Aborting initialization\n"));
|
|
status = NT_STATUS_INVALID_PARAMETER;
|
|
goto error;
|
|
}
|
|
|
|
/*
|
|
* has the highest uid value been reduced to setting that is not
|
|
* sufficient any more for already existing ranges?
|
|
*/
|
|
if (hwm > config->maxranges) {
|
|
DEBUG(1, ("New upper uid limit is too low to cover "
|
|
"existing mappings! Aborting initialization\n"));
|
|
status = NT_STATUS_INVALID_PARAMETER;
|
|
goto error;
|
|
}
|
|
|
|
status = idmap_autorid_saveconfig(config);
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(1, ("Failed to store configuration data!\n"));
|
|
goto error;
|
|
}
|
|
|
|
DEBUG(5, ("%d domain ranges with a size of %d are available\n",
|
|
config->maxranges, config->rangesize));
|
|
|
|
config->ignore_builtin = lp_parm_bool(-1, "idmap config *",
|
|
"ignore builtin", false);
|
|
|
|
/* fill the TDB common configuration */
|
|
commonconfig->private_data = config;
|
|
|
|
commonconfig->db = autorid_db;
|
|
commonconfig->max_id = config->rangesize -1;
|
|
commonconfig->hwmkey_uid = ALLOC_HWM_UID;
|
|
commonconfig->hwmkey_gid = ALLOC_HWM_GID;
|
|
commonconfig->rw_ops->get_new_id = idmap_autorid_allocate_id;
|
|
commonconfig->rw_ops->set_mapping = idmap_tdb_common_set_mapping;
|
|
|
|
dom->private_data = commonconfig;
|
|
|
|
/* preallocate well-known SIDs in the pool */
|
|
status = idmap_autorid_preallocate_wellknown(dom);
|
|
|
|
goto done;
|
|
|
|
error:
|
|
talloc_free(config);
|
|
|
|
done:
|
|
talloc_free(storedconfig);
|
|
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
Close the idmap tdb instance
|
|
*/
|
|
static struct idmap_methods autorid_methods = {
|
|
.init = idmap_autorid_initialize,
|
|
.unixids_to_sids = idmap_autorid_unixids_to_sids,
|
|
.sids_to_unixids = idmap_autorid_sids_to_unixids,
|
|
.allocate_id = idmap_autorid_allocate_id
|
|
};
|
|
|
|
NTSTATUS samba_init_module(void)
|
|
{
|
|
return smb_register_idmap(SMB_IDMAP_INTERFACE_VERSION,
|
|
"autorid", &autorid_methods);
|
|
}
|