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https://github.com/samba-team/samba.git
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c2ea100777
Fix a confusing API: Many places TALLOC_FREE the path where it's not clear you have to do it. Signed-off-by: Volker Lendecke <vl@samba.org> Reviewed-by: Andreas Schneider <asn@samba.org>
1355 lines
34 KiB
C
1355 lines
34 KiB
C
/*
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* Unix SMB/CIFS implementation.
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* SMB parameters and setup
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* Copyright (C) Andrew Tridgell 1992-1998
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* Copyright (C) Simo Sorce 2000-2003
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* Copyright (C) Gerald Carter 2000-2006
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* Copyright (C) Jeremy Allison 2001-2009
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* Copyright (C) Andrew Bartlett 2002
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* Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2005
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*
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* This program is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 3 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "system/filesys.h"
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#include "passdb.h"
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#include "dbwrap/dbwrap.h"
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#include "dbwrap/dbwrap_open.h"
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#include "../libcli/security/security.h"
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#include "util_tdb.h"
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#include "passdb/pdb_tdb.h"
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#if 0 /* when made a module use this */
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static int tdbsam_debug_level = DBGC_ALL;
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#undef DBGC_CLASS
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#define DBGC_CLASS tdbsam_debug_level
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#else
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#undef DBGC_CLASS
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#define DBGC_CLASS DBGC_PASSDB
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#endif
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#define TDBSAM_VERSION 4 /* Most recent TDBSAM version */
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#define TDBSAM_MINOR_VERSION 0 /* Most recent TDBSAM minor version */
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#define TDBSAM_VERSION_STRING "INFO/version"
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#define TDBSAM_MINOR_VERSION_STRING "INFO/minor_version"
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#define PASSDB_FILE_NAME "passdb.tdb"
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#define USERPREFIX "USER_"
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#define USERPREFIX_LEN 5
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#define RIDPREFIX "RID_"
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#define PRIVPREFIX "PRIV_"
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#define NEXT_RID_STRING "NEXT_RID"
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/* GLOBAL TDB SAM CONTEXT */
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static struct db_context *db_sam;
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static char *tdbsam_filename;
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static bool map_builtin;
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struct tdbsam_convert_state {
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int32_t from;
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bool success;
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};
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static int tdbsam_convert_one(struct db_record *rec, void *priv)
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{
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struct tdbsam_convert_state *state =
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(struct tdbsam_convert_state *)priv;
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struct samu *user;
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TDB_DATA data;
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NTSTATUS status;
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bool ret;
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TDB_DATA key;
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TDB_DATA value;
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key = dbwrap_record_get_key(rec);
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if (key.dsize < USERPREFIX_LEN) {
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return 0;
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}
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if (strncmp((char *)key.dptr, USERPREFIX, USERPREFIX_LEN) != 0) {
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return 0;
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}
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user = samu_new(talloc_tos());
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if (user == NULL) {
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DEBUG(0,("tdbsam_convert: samu_new() failed!\n"));
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state->success = false;
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return -1;
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}
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DEBUG(10,("tdbsam_convert: Try unpacking a record with (key:%s) "
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"(version:%d)\n", (char *)key.dptr, state->from));
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value = dbwrap_record_get_value(rec);
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switch (state->from) {
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case 0:
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ret = init_samu_from_buffer(user, SAMU_BUFFER_V0,
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(uint8_t *)value.dptr,
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value.dsize);
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break;
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case 1:
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ret = init_samu_from_buffer(user, SAMU_BUFFER_V1,
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(uint8_t *)value.dptr,
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value.dsize);
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break;
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case 2:
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ret = init_samu_from_buffer(user, SAMU_BUFFER_V2,
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(uint8_t *)value.dptr,
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value.dsize);
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break;
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case 3:
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ret = init_samu_from_buffer(user, SAMU_BUFFER_V3,
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(uint8_t *)value.dptr,
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value.dsize);
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break;
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case 4:
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ret = init_samu_from_buffer(user, SAMU_BUFFER_V4,
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(uint8_t *)value.dptr,
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value.dsize);
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break;
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default:
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/* unknown tdbsam version */
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ret = False;
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}
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if (!ret) {
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DEBUG(0,("tdbsam_convert: Bad struct samu entry returned "
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"from TDB (key:%s) (version:%d)\n", (char *)key.dptr,
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state->from));
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TALLOC_FREE(user);
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state->success = false;
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return -1;
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}
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data.dsize = init_buffer_from_samu(&data.dptr, user, false);
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TALLOC_FREE(user);
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if (data.dsize == -1) {
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DEBUG(0,("tdbsam_convert: cannot pack the struct samu into "
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"the new format\n"));
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state->success = false;
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return -1;
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}
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status = dbwrap_record_store(rec, data, TDB_MODIFY);
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if (!NT_STATUS_IS_OK(status)) {
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DEBUG(0, ("Could not store the new record: %s\n",
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nt_errstr(status)));
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state->success = false;
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return -1;
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}
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return 0;
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}
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/**********************************************************************
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Struct and function to backup an old record.
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*********************************************************************/
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struct tdbsam_backup_state {
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struct db_context *new_db;
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bool success;
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};
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static int backup_copy_fn(struct db_record *orig_rec, void *state)
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{
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struct tdbsam_backup_state *bs = (struct tdbsam_backup_state *)state;
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struct db_record *new_rec;
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NTSTATUS status;
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TDB_DATA key;
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TDB_DATA value;
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key = dbwrap_record_get_key(orig_rec);
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new_rec = dbwrap_fetch_locked(bs->new_db, talloc_tos(), key);
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if (new_rec == NULL) {
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bs->success = false;
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return 1;
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}
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value = dbwrap_record_get_value(orig_rec);
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status = dbwrap_record_store(new_rec, value, TDB_INSERT);
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TALLOC_FREE(new_rec);
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if (!NT_STATUS_IS_OK(status)) {
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bs->success = false;
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return 1;
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}
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return 0;
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}
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/**********************************************************************
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Make a backup of an old passdb and replace the new one with it. We
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have to do this as between 3.0.x and 3.2.x the hash function changed
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by mistake (used unsigned char * instead of char *). This means the
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previous simple update code will fail due to not being able to find
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existing records to replace in the tdbsam_convert_one() function. JRA.
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*********************************************************************/
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static bool tdbsam_convert_backup(const char *dbname, struct db_context **pp_db)
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{
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TALLOC_CTX *frame = talloc_stackframe();
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const char *tmp_fname = NULL;
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struct db_context *tmp_db = NULL;
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struct db_context *orig_db = *pp_db;
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struct tdbsam_backup_state bs;
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NTSTATUS status;
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tmp_fname = talloc_asprintf(frame, "%s.tmp", dbname);
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if (!tmp_fname) {
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TALLOC_FREE(frame);
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return false;
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}
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unlink(tmp_fname);
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/* Remember to open this on the NULL context. We need
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* it to stay around after we return from here. */
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tmp_db = db_open(NULL, tmp_fname, 0,
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TDB_DEFAULT, O_CREAT|O_RDWR, 0600,
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DBWRAP_LOCK_ORDER_1, DBWRAP_FLAG_NONE);
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if (tmp_db == NULL) {
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DEBUG(0, ("tdbsam_convert_backup: Failed to create backup TDB passwd "
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"[%s]\n", tmp_fname));
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TALLOC_FREE(frame);
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return false;
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}
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if (dbwrap_transaction_start(orig_db) != 0) {
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DEBUG(0, ("tdbsam_convert_backup: Could not start transaction (1)\n"));
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unlink(tmp_fname);
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TALLOC_FREE(tmp_db);
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TALLOC_FREE(frame);
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return false;
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}
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if (dbwrap_transaction_start(tmp_db) != 0) {
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DEBUG(0, ("tdbsam_convert_backup: Could not start transaction (2)\n"));
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dbwrap_transaction_cancel(orig_db);
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unlink(tmp_fname);
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TALLOC_FREE(tmp_db);
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TALLOC_FREE(frame);
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return false;
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}
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bs.new_db = tmp_db;
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bs.success = true;
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status = dbwrap_traverse(orig_db, backup_copy_fn, (void *)&bs, NULL);
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if (!NT_STATUS_IS_OK(status)) {
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DEBUG(0, ("tdbsam_convert_backup: traverse failed\n"));
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goto cancel;
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}
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if (!bs.success) {
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DEBUG(0, ("tdbsam_convert_backup: Rewriting records failed\n"));
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goto cancel;
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}
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if (dbwrap_transaction_commit(orig_db) != 0) {
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smb_panic("tdbsam_convert_backup: orig commit failed\n");
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}
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if (dbwrap_transaction_commit(tmp_db) != 0) {
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smb_panic("tdbsam_convert_backup: orig commit failed\n");
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}
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/* be sure to close the DBs _before_ renaming the file */
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TALLOC_FREE(orig_db);
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TALLOC_FREE(tmp_db);
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/* This is safe from other users as we know we're
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* under a mutex here. */
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if (rename(tmp_fname, dbname) == -1) {
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DEBUG(0, ("tdbsam_convert_backup: rename of %s to %s failed %s\n",
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tmp_fname,
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dbname,
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strerror(errno)));
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smb_panic("tdbsam_convert_backup: replace passdb failed\n");
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}
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TALLOC_FREE(frame);
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/* re-open the converted TDB */
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orig_db = db_open(NULL, dbname, 0,
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TDB_DEFAULT, O_CREAT|O_RDWR, 0600,
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DBWRAP_LOCK_ORDER_1, DBWRAP_FLAG_NONE);
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if (orig_db == NULL) {
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DEBUG(0, ("tdbsam_convert_backup: Failed to re-open "
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"converted passdb TDB [%s]\n", dbname));
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return false;
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}
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DEBUG(1, ("tdbsam_convert_backup: updated %s file.\n",
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dbname ));
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/* Replace the global db pointer. */
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*pp_db = orig_db;
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return true;
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cancel:
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if (dbwrap_transaction_cancel(orig_db) != 0) {
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smb_panic("tdbsam_convert: transaction_cancel failed");
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}
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if (dbwrap_transaction_cancel(tmp_db) != 0) {
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smb_panic("tdbsam_convert: transaction_cancel failed");
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}
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unlink(tmp_fname);
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TALLOC_FREE(tmp_db);
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TALLOC_FREE(frame);
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return false;
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}
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static bool tdbsam_upgrade_next_rid(struct db_context *db)
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{
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TDB_CONTEXT *tdb;
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uint32_t rid;
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bool ok = false;
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NTSTATUS status;
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char *db_path;
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status = dbwrap_fetch_uint32_bystring(db, NEXT_RID_STRING, &rid);
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if (NT_STATUS_IS_OK(status)) {
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return true;
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}
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db_path = state_path(talloc_tos(), "winbindd_idmap.tdb");
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if (db_path == NULL) {
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return false;
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}
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tdb = tdb_open_log(db_path, 0,
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TDB_DEFAULT, O_RDONLY, 0644);
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TALLOC_FREE(db_path);
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if (tdb) {
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ok = tdb_fetch_uint32(tdb, "RID_COUNTER", &rid);
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if (!ok) {
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rid = BASE_RID;
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}
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tdb_close(tdb);
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} else {
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rid = BASE_RID;
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}
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status = dbwrap_store_uint32_bystring(db, NEXT_RID_STRING, rid);
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if (!NT_STATUS_IS_OK(status)) {
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return false;
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}
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return true;
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}
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static bool tdbsam_convert(struct db_context **pp_db, const char *name, int32_t from)
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{
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struct tdbsam_convert_state state;
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struct db_context *db = NULL;
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NTSTATUS status;
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/* We only need the update backup for local db's. */
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if (db_is_local(name) && !tdbsam_convert_backup(name, pp_db)) {
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DEBUG(0, ("tdbsam_convert: Could not backup %s\n", name));
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return false;
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}
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db = *pp_db;
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state.from = from;
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state.success = true;
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if (dbwrap_transaction_start(db) != 0) {
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DEBUG(0, ("tdbsam_convert: Could not start transaction\n"));
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return false;
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}
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if (!tdbsam_upgrade_next_rid(db)) {
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DEBUG(0, ("tdbsam_convert: tdbsam_upgrade_next_rid failed\n"));
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goto cancel;
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}
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status = dbwrap_traverse(db, tdbsam_convert_one, &state, NULL);
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if (!NT_STATUS_IS_OK(status)) {
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DEBUG(0, ("tdbsam_convert: traverse failed\n"));
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goto cancel;
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}
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if (!state.success) {
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DEBUG(0, ("tdbsam_convert: Converting records failed\n"));
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goto cancel;
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}
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status = dbwrap_store_int32_bystring(db, TDBSAM_VERSION_STRING,
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TDBSAM_VERSION);
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if (!NT_STATUS_IS_OK(status)) {
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DEBUG(0, ("tdbsam_convert: Could not store tdbsam version: "
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"%s\n", nt_errstr(status)));
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goto cancel;
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}
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status = dbwrap_store_int32_bystring(db, TDBSAM_MINOR_VERSION_STRING,
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TDBSAM_MINOR_VERSION);
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if (!NT_STATUS_IS_OK(status)) {
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DEBUG(0, ("tdbsam_convert: Could not store tdbsam minor "
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"version: %s\n", nt_errstr(status)));
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goto cancel;
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}
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if (dbwrap_transaction_commit(db) != 0) {
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DEBUG(0, ("tdbsam_convert: Could not commit transaction\n"));
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return false;
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}
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return true;
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cancel:
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if (dbwrap_transaction_cancel(db) != 0) {
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smb_panic("tdbsam_convert: transaction_cancel failed");
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}
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return false;
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}
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/*********************************************************************
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Open the tdbsam file based on the absolute path specified.
|
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Uses a reference count to allow multiple open calls.
|
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*********************************************************************/
|
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|
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static bool tdbsam_open( const char *name )
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{
|
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int32_t version;
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int32_t minor_version;
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NTSTATUS status;
|
|
|
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/* check if we are already open */
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|
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if ( db_sam ) {
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return true;
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}
|
|
|
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/* Try to open tdb passwd. Create a new one if necessary */
|
|
|
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db_sam = db_open(NULL, name, 0, TDB_DEFAULT, O_CREAT|O_RDWR, 0600,
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DBWRAP_LOCK_ORDER_1, DBWRAP_FLAG_NONE);
|
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if (db_sam == NULL) {
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DEBUG(0, ("tdbsam_open: Failed to open/create TDB passwd "
|
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"[%s]\n", name));
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return false;
|
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}
|
|
|
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/* Check the version */
|
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status = dbwrap_fetch_int32_bystring(db_sam, TDBSAM_VERSION_STRING,
|
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&version);
|
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if (!NT_STATUS_IS_OK(status)) {
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version = 0; /* Version not found, assume version 0 */
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}
|
|
|
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/* Get the minor version */
|
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status = dbwrap_fetch_int32_bystring(
|
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db_sam, TDBSAM_MINOR_VERSION_STRING, &minor_version);
|
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if (!NT_STATUS_IS_OK(status)) {
|
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minor_version = 0; /* Minor version not found, assume 0 */
|
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}
|
|
|
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/* Compare the version */
|
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if (version > TDBSAM_VERSION) {
|
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/* Version more recent than the latest known */
|
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DEBUG(0, ("tdbsam_open: unknown version => %d\n", version));
|
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TALLOC_FREE(db_sam);
|
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return false;
|
|
}
|
|
|
|
if ( version < TDBSAM_VERSION ||
|
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(version == TDBSAM_VERSION &&
|
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minor_version < TDBSAM_MINOR_VERSION) ) {
|
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/*
|
|
* Ok - we think we're going to have to convert.
|
|
* Due to the backup process we now must do to
|
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* upgrade we have to get a mutex and re-check
|
|
* the version. Someone else may have upgraded
|
|
* whilst we were checking.
|
|
*/
|
|
|
|
struct named_mutex *mtx = grab_named_mutex(NULL,
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"tdbsam_upgrade_mutex",
|
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600);
|
|
|
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if (!mtx) {
|
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DEBUG(0, ("tdbsam_open: failed to grab mutex.\n"));
|
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TALLOC_FREE(db_sam);
|
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return false;
|
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}
|
|
|
|
/* Re-check the version */
|
|
status = dbwrap_fetch_int32_bystring(
|
|
db_sam, TDBSAM_VERSION_STRING, &version);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
version = 0; /* Version not found, assume version 0 */
|
|
}
|
|
|
|
/* Re-check the minor version */
|
|
status = dbwrap_fetch_int32_bystring(
|
|
db_sam, TDBSAM_MINOR_VERSION_STRING, &minor_version);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
minor_version = 0; /* Minor version not found, assume 0 */
|
|
}
|
|
|
|
/* Compare the version */
|
|
if (version > TDBSAM_VERSION) {
|
|
/* Version more recent than the latest known */
|
|
DEBUG(0, ("tdbsam_open: unknown version => %d\n", version));
|
|
TALLOC_FREE(db_sam);
|
|
TALLOC_FREE(mtx);
|
|
return false;
|
|
}
|
|
|
|
if ( version < TDBSAM_VERSION ||
|
|
(version == TDBSAM_VERSION &&
|
|
minor_version < TDBSAM_MINOR_VERSION) ) {
|
|
/*
|
|
* Note that minor versions we read that are greater
|
|
* than the current minor version we have hard coded
|
|
* are assumed to be compatible if they have the same
|
|
* major version. That allows previous versions of the
|
|
* passdb code that don't know about minor versions to
|
|
* still use this database. JRA.
|
|
*/
|
|
|
|
DEBUG(1, ("tdbsam_open: Converting version %d.%d database to "
|
|
"version %d.%d.\n",
|
|
version,
|
|
minor_version,
|
|
TDBSAM_VERSION,
|
|
TDBSAM_MINOR_VERSION));
|
|
|
|
if ( !tdbsam_convert(&db_sam, name, version) ) {
|
|
DEBUG(0, ("tdbsam_open: Error when trying to convert "
|
|
"tdbsam [%s]\n",name));
|
|
TALLOC_FREE(db_sam);
|
|
TALLOC_FREE(mtx);
|
|
return false;
|
|
}
|
|
|
|
DEBUG(3, ("TDBSAM converted successfully.\n"));
|
|
}
|
|
TALLOC_FREE(mtx);
|
|
}
|
|
|
|
DEBUG(4,("tdbsam_open: successfully opened %s\n", name ));
|
|
|
|
return true;
|
|
}
|
|
|
|
/******************************************************************
|
|
Lookup a name in the SAM TDB
|
|
******************************************************************/
|
|
|
|
static NTSTATUS tdbsam_getsampwnam (struct pdb_methods *my_methods,
|
|
struct samu *user, const char *sname)
|
|
{
|
|
TDB_DATA data;
|
|
fstring keystr;
|
|
fstring name;
|
|
NTSTATUS status;
|
|
|
|
if ( !user ) {
|
|
DEBUG(0,("pdb_getsampwnam: struct samu is NULL.\n"));
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
/* Data is stored in all lower-case */
|
|
fstrcpy(name, sname);
|
|
if (!strlower_m(name)) {
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
/* set search key */
|
|
fstr_sprintf(keystr, "%s%s", USERPREFIX, name);
|
|
|
|
/* open the database */
|
|
|
|
if ( !tdbsam_open( tdbsam_filename ) ) {
|
|
DEBUG(0,("tdbsam_getsampwnam: failed to open %s!\n", tdbsam_filename));
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
/* get the record */
|
|
|
|
status = dbwrap_fetch_bystring(db_sam, talloc_tos(), keystr, &data);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(5,("pdb_getsampwnam (TDB): error fetching database.\n"));
|
|
DEBUGADD(5, (" Key: %s\n", keystr));
|
|
return NT_STATUS_NO_SUCH_USER;
|
|
}
|
|
|
|
if (data.dsize == 0) {
|
|
DEBUG(5, ("%s: Got 0-sized record for key %s\n", __func__,
|
|
keystr));
|
|
return NT_STATUS_NO_SUCH_USER;
|
|
}
|
|
|
|
/* unpack the buffer */
|
|
|
|
if (!init_samu_from_buffer(user, SAMU_BUFFER_LATEST, data.dptr, data.dsize)) {
|
|
DEBUG(0,("pdb_getsampwent: Bad struct samu entry returned from TDB!\n"));
|
|
TALLOC_FREE(data.dptr);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
/* success */
|
|
|
|
TALLOC_FREE(data.dptr);
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/***************************************************************************
|
|
Search by rid
|
|
**************************************************************************/
|
|
|
|
static NTSTATUS tdbsam_getsampwrid (struct pdb_methods *my_methods,
|
|
struct samu *user, uint32_t rid)
|
|
{
|
|
NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
|
|
TDB_DATA data;
|
|
fstring keystr;
|
|
fstring name;
|
|
|
|
if ( !user ) {
|
|
DEBUG(0,("pdb_getsampwrid: struct samu is NULL.\n"));
|
|
return nt_status;
|
|
}
|
|
|
|
/* set search key */
|
|
|
|
fstr_sprintf(keystr, "%s%.8x", RIDPREFIX, rid);
|
|
|
|
/* open the database */
|
|
|
|
if ( !tdbsam_open( tdbsam_filename ) ) {
|
|
DEBUG(0,("tdbsam_getsampwrid: failed to open %s!\n", tdbsam_filename));
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
/* get the record */
|
|
|
|
nt_status = dbwrap_fetch_bystring(db_sam, talloc_tos(), keystr, &data);
|
|
if (!NT_STATUS_IS_OK(nt_status)) {
|
|
DEBUG(5,("pdb_getsampwrid (TDB): error looking up RID %d by key %s.\n", rid, keystr));
|
|
return nt_status;
|
|
}
|
|
|
|
fstrcpy(name, (const char *)data.dptr);
|
|
TALLOC_FREE(data.dptr);
|
|
|
|
return tdbsam_getsampwnam (my_methods, user, name);
|
|
}
|
|
|
|
static NTSTATUS tdbsam_getsampwsid(struct pdb_methods *my_methods,
|
|
struct samu * user, const struct dom_sid *sid)
|
|
{
|
|
uint32_t rid;
|
|
|
|
if ( !sid_peek_check_rid(get_global_sam_sid(), sid, &rid) )
|
|
return NT_STATUS_UNSUCCESSFUL;
|
|
|
|
return tdbsam_getsampwrid(my_methods, user, rid);
|
|
}
|
|
|
|
static bool tdb_delete_samacct_only( struct samu *sam_pass )
|
|
{
|
|
fstring keystr;
|
|
fstring name;
|
|
NTSTATUS status;
|
|
|
|
fstrcpy(name, pdb_get_username(sam_pass));
|
|
if (!strlower_m(name)) {
|
|
return false;
|
|
}
|
|
|
|
/* set the search key */
|
|
|
|
fstr_sprintf(keystr, "%s%s", USERPREFIX, name);
|
|
|
|
/* it's outaa here! 8^) */
|
|
if ( !tdbsam_open( tdbsam_filename ) ) {
|
|
DEBUG(0,("tdb_delete_samacct_only: failed to open %s!\n",
|
|
tdbsam_filename));
|
|
return false;
|
|
}
|
|
|
|
status = dbwrap_delete_bystring(db_sam, keystr);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(5, ("Error deleting entry from tdb passwd "
|
|
"database: %s!\n", nt_errstr(status)));
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/***************************************************************************
|
|
Delete a struct samu records for the username and RID key
|
|
****************************************************************************/
|
|
|
|
static NTSTATUS tdbsam_delete_sam_account(struct pdb_methods *my_methods,
|
|
struct samu *sam_pass)
|
|
{
|
|
NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
|
|
fstring keystr;
|
|
uint32_t rid;
|
|
fstring name;
|
|
|
|
/* open the database */
|
|
|
|
if ( !tdbsam_open( tdbsam_filename ) ) {
|
|
DEBUG(0,("tdbsam_delete_sam_account: failed to open %s!\n",
|
|
tdbsam_filename));
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
fstrcpy(name, pdb_get_username(sam_pass));
|
|
if (!strlower_m(name)) {
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
/* set the search key */
|
|
|
|
fstr_sprintf(keystr, "%s%s", USERPREFIX, name);
|
|
|
|
rid = pdb_get_user_rid(sam_pass);
|
|
|
|
/* it's outaa here! 8^) */
|
|
|
|
if (dbwrap_transaction_start(db_sam) != 0) {
|
|
DEBUG(0, ("Could not start transaction\n"));
|
|
return NT_STATUS_UNSUCCESSFUL;
|
|
}
|
|
|
|
nt_status = dbwrap_delete_bystring(db_sam, keystr);
|
|
if (!NT_STATUS_IS_OK(nt_status)) {
|
|
DEBUG(5, ("Error deleting entry from tdb passwd "
|
|
"database: %s!\n", nt_errstr(nt_status)));
|
|
goto cancel;
|
|
}
|
|
|
|
/* set the search key */
|
|
|
|
fstr_sprintf(keystr, "%s%.8x", RIDPREFIX, rid);
|
|
|
|
/* it's outaa here! 8^) */
|
|
|
|
nt_status = dbwrap_delete_bystring(db_sam, keystr);
|
|
if (!NT_STATUS_IS_OK(nt_status)) {
|
|
DEBUG(5, ("Error deleting entry from tdb rid "
|
|
"database: %s!\n", nt_errstr(nt_status)));
|
|
goto cancel;
|
|
}
|
|
|
|
if (dbwrap_transaction_commit(db_sam) != 0) {
|
|
DEBUG(0, ("Could not commit transaction\n"));
|
|
return NT_STATUS_INTERNAL_DB_CORRUPTION;
|
|
}
|
|
|
|
return NT_STATUS_OK;
|
|
|
|
cancel:
|
|
if (dbwrap_transaction_cancel(db_sam) != 0) {
|
|
smb_panic("transaction_cancel failed");
|
|
}
|
|
|
|
return nt_status;
|
|
}
|
|
|
|
|
|
/***************************************************************************
|
|
Update the TDB SAM account record only
|
|
Assumes that the tdbsam is already open
|
|
****************************************************************************/
|
|
static bool tdb_update_samacct_only( struct samu* newpwd, int flag )
|
|
{
|
|
TDB_DATA data;
|
|
uint8_t *buf = NULL;
|
|
fstring keystr;
|
|
fstring name;
|
|
bool ret = false;
|
|
NTSTATUS status;
|
|
|
|
/* copy the struct samu struct into a BYTE buffer for storage */
|
|
|
|
if ( (data.dsize=init_buffer_from_samu(&buf, newpwd, False)) == -1 ) {
|
|
DEBUG(0,("tdb_update_sam: ERROR - Unable to copy struct samu info BYTE buffer!\n"));
|
|
goto done;
|
|
}
|
|
data.dptr = buf;
|
|
|
|
fstrcpy(name, pdb_get_username(newpwd));
|
|
if (!strlower_m(name)) {
|
|
goto done;
|
|
}
|
|
|
|
DEBUG(5, ("Storing %saccount %s with RID %d\n",
|
|
flag == TDB_INSERT ? "(new) " : "", name,
|
|
pdb_get_user_rid(newpwd)));
|
|
|
|
/* setup the USER index key */
|
|
fstr_sprintf(keystr, "%s%s", USERPREFIX, name);
|
|
|
|
/* add the account */
|
|
|
|
status = dbwrap_store_bystring(db_sam, keystr, data, flag);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(0, ("Unable to modify passwd TDB: %s!",
|
|
nt_errstr(status)));
|
|
goto done;
|
|
}
|
|
|
|
ret = true;
|
|
|
|
done:
|
|
/* cleanup */
|
|
SAFE_FREE(buf);
|
|
return ret;
|
|
}
|
|
|
|
/***************************************************************************
|
|
Update the TDB SAM RID record only
|
|
Assumes that the tdbsam is already open
|
|
****************************************************************************/
|
|
static bool tdb_update_ridrec_only( struct samu* newpwd, int flag )
|
|
{
|
|
TDB_DATA data;
|
|
fstring keystr;
|
|
fstring name;
|
|
NTSTATUS status;
|
|
|
|
fstrcpy(name, pdb_get_username(newpwd));
|
|
if (!strlower_m(name)) {
|
|
return false;
|
|
}
|
|
|
|
/* setup RID data */
|
|
data = string_term_tdb_data(name);
|
|
|
|
/* setup the RID index key */
|
|
fstr_sprintf(keystr, "%s%.8x", RIDPREFIX, pdb_get_user_rid(newpwd));
|
|
|
|
/* add the reference */
|
|
status = dbwrap_store_bystring(db_sam, keystr, data, flag);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(0, ("Unable to modify TDB passwd: %s!\n",
|
|
nt_errstr(status)));
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
/***************************************************************************
|
|
Update the TDB SAM
|
|
****************************************************************************/
|
|
|
|
static bool tdb_update_sam(struct pdb_methods *my_methods, struct samu* newpwd,
|
|
int flag)
|
|
{
|
|
uint32_t oldrid;
|
|
uint32_t newrid;
|
|
|
|
if (!(newrid = pdb_get_user_rid(newpwd))) {
|
|
DEBUG(0,("tdb_update_sam: struct samu (%s) with no RID!\n",
|
|
pdb_get_username(newpwd)));
|
|
return False;
|
|
}
|
|
|
|
oldrid = newrid;
|
|
|
|
/* open the database */
|
|
|
|
if ( !tdbsam_open( tdbsam_filename ) ) {
|
|
DEBUG(0,("tdbsam_getsampwnam: failed to open %s!\n", tdbsam_filename));
|
|
return False;
|
|
}
|
|
|
|
if (dbwrap_transaction_start(db_sam) != 0) {
|
|
DEBUG(0, ("Could not start transaction\n"));
|
|
return false;
|
|
}
|
|
|
|
/* If we are updating, we may be changing this users RID. Retrieve the old RID
|
|
so we can check. */
|
|
|
|
if (flag == TDB_MODIFY) {
|
|
struct samu *account = samu_new(talloc_tos());
|
|
if (account == NULL) {
|
|
DEBUG(0,("tdb_update_sam: samu_new() failed\n"));
|
|
goto cancel;
|
|
}
|
|
if (!NT_STATUS_IS_OK(tdbsam_getsampwnam(my_methods, account, pdb_get_username(newpwd)))) {
|
|
DEBUG(0,("tdb_update_sam: tdbsam_getsampwnam() for %s failed\n",
|
|
pdb_get_username(newpwd)));
|
|
TALLOC_FREE(account);
|
|
goto cancel;
|
|
}
|
|
if (!(oldrid = pdb_get_user_rid(account))) {
|
|
DEBUG(0,("tdb_update_sam: pdb_get_user_rid() failed\n"));
|
|
TALLOC_FREE(account);
|
|
goto cancel;
|
|
}
|
|
TALLOC_FREE(account);
|
|
}
|
|
|
|
/* Update the new samu entry. */
|
|
if (!tdb_update_samacct_only(newpwd, flag)) {
|
|
goto cancel;
|
|
}
|
|
|
|
/* Now take care of the case where the RID changed. We need
|
|
* to delete the old RID key and add the new. */
|
|
|
|
if (flag == TDB_MODIFY && newrid != oldrid) {
|
|
fstring keystr;
|
|
|
|
/* Delete old RID key */
|
|
DEBUG(10, ("tdb_update_sam: Deleting key for RID %u\n", oldrid));
|
|
fstr_sprintf(keystr, "%s%.8x", RIDPREFIX, oldrid);
|
|
if (!NT_STATUS_IS_OK(dbwrap_delete_bystring(db_sam, keystr))) {
|
|
DEBUG(0, ("tdb_update_sam: Can't delete %s\n", keystr));
|
|
goto cancel;
|
|
}
|
|
/* Insert new RID key */
|
|
DEBUG(10, ("tdb_update_sam: Inserting key for RID %u\n", newrid));
|
|
if (!tdb_update_ridrec_only(newpwd, TDB_INSERT)) {
|
|
goto cancel;
|
|
}
|
|
} else {
|
|
DEBUG(10, ("tdb_update_sam: %s key for RID %u\n",
|
|
flag == TDB_MODIFY ? "Updating" : "Inserting", newrid));
|
|
if (!tdb_update_ridrec_only(newpwd, flag)) {
|
|
goto cancel;
|
|
}
|
|
}
|
|
|
|
if (dbwrap_transaction_commit(db_sam) != 0) {
|
|
DEBUG(0, ("Could not commit transaction\n"));
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
|
|
cancel:
|
|
if (dbwrap_transaction_cancel(db_sam) != 0) {
|
|
smb_panic("transaction_cancel failed");
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/***************************************************************************
|
|
Modifies an existing struct samu
|
|
****************************************************************************/
|
|
|
|
static NTSTATUS tdbsam_update_sam_account (struct pdb_methods *my_methods, struct samu *newpwd)
|
|
{
|
|
if ( !tdb_update_sam(my_methods, newpwd, TDB_MODIFY) )
|
|
return NT_STATUS_UNSUCCESSFUL;
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/***************************************************************************
|
|
Adds an existing struct samu
|
|
****************************************************************************/
|
|
|
|
static NTSTATUS tdbsam_add_sam_account (struct pdb_methods *my_methods, struct samu *newpwd)
|
|
{
|
|
if ( !tdb_update_sam(my_methods, newpwd, TDB_INSERT) )
|
|
return NT_STATUS_UNSUCCESSFUL;
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/***************************************************************************
|
|
Renames a struct samu
|
|
- check for the posix user/rename user script
|
|
- Add and lock the new user record
|
|
- rename the posix user
|
|
- rewrite the rid->username record
|
|
- delete the old user
|
|
- unlock the new user record
|
|
***************************************************************************/
|
|
static NTSTATUS tdbsam_rename_sam_account(struct pdb_methods *my_methods,
|
|
struct samu *old_acct,
|
|
const char *newname)
|
|
{
|
|
struct samu *new_acct = NULL;
|
|
char *rename_script = NULL;
|
|
int rename_ret;
|
|
fstring oldname_lower;
|
|
fstring newname_lower;
|
|
|
|
/* can't do anything without an external script */
|
|
|
|
if ( !(new_acct = samu_new( talloc_tos() )) ) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
rename_script = lp_rename_user_script(new_acct);
|
|
if (!rename_script) {
|
|
TALLOC_FREE(new_acct);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
if (!*rename_script) {
|
|
TALLOC_FREE(new_acct);
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
if ( !pdb_copy_sam_account(new_acct, old_acct)
|
|
|| !pdb_set_username(new_acct, newname, PDB_CHANGED))
|
|
{
|
|
TALLOC_FREE(new_acct);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
/* open the database */
|
|
if ( !tdbsam_open( tdbsam_filename ) ) {
|
|
DEBUG(0, ("tdbsam_getsampwnam: failed to open %s!\n",
|
|
tdbsam_filename));
|
|
TALLOC_FREE(new_acct);
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
if (dbwrap_transaction_start(db_sam) != 0) {
|
|
DEBUG(0, ("Could not start transaction\n"));
|
|
TALLOC_FREE(new_acct);
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
|
|
}
|
|
|
|
/* add the new account and lock it */
|
|
if ( !tdb_update_samacct_only(new_acct, TDB_INSERT) ) {
|
|
goto cancel;
|
|
}
|
|
|
|
/* Rename the posix user. Follow the semantics of _samr_create_user()
|
|
so that we lower case the posix name but preserve the case in passdb */
|
|
|
|
fstrcpy( oldname_lower, pdb_get_username(old_acct) );
|
|
if (!strlower_m( oldname_lower )) {
|
|
goto cancel;
|
|
}
|
|
|
|
fstrcpy( newname_lower, newname );
|
|
if (!strlower_m( newname_lower )) {
|
|
goto cancel;
|
|
}
|
|
|
|
rename_script = talloc_string_sub2(new_acct,
|
|
rename_script,
|
|
"%unew",
|
|
newname_lower,
|
|
true,
|
|
false,
|
|
true);
|
|
if (!rename_script) {
|
|
goto cancel;
|
|
}
|
|
rename_script = talloc_string_sub2(new_acct,
|
|
rename_script,
|
|
"%uold",
|
|
oldname_lower,
|
|
true,
|
|
false,
|
|
true);
|
|
if (!rename_script) {
|
|
goto cancel;
|
|
}
|
|
rename_ret = smbrun(rename_script, NULL, NULL);
|
|
|
|
DEBUG(rename_ret ? 0 : 3,("Running the command `%s' gave %d\n",
|
|
rename_script, rename_ret));
|
|
|
|
if (rename_ret != 0) {
|
|
goto cancel;
|
|
}
|
|
|
|
smb_nscd_flush_user_cache();
|
|
|
|
/* rewrite the rid->username record */
|
|
|
|
if ( !tdb_update_ridrec_only( new_acct, TDB_MODIFY) ) {
|
|
goto cancel;
|
|
}
|
|
|
|
tdb_delete_samacct_only( old_acct );
|
|
|
|
if (dbwrap_transaction_commit(db_sam) != 0) {
|
|
/*
|
|
* Ok, we're screwed. We've changed the posix account, but
|
|
* could not adapt passdb.tdb. Shall we change the posix
|
|
* account back?
|
|
*/
|
|
DEBUG(0, ("transaction_commit failed\n"));
|
|
TALLOC_FREE(new_acct);
|
|
return NT_STATUS_INTERNAL_DB_CORRUPTION;
|
|
}
|
|
|
|
TALLOC_FREE(new_acct );
|
|
return NT_STATUS_OK;
|
|
|
|
cancel:
|
|
if (dbwrap_transaction_cancel(db_sam) != 0) {
|
|
smb_panic("transaction_cancel failed");
|
|
}
|
|
|
|
TALLOC_FREE(new_acct);
|
|
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
static uint32_t tdbsam_capabilities(struct pdb_methods *methods)
|
|
{
|
|
return PDB_CAP_STORE_RIDS;
|
|
}
|
|
|
|
static bool tdbsam_new_rid(struct pdb_methods *methods, uint32_t *prid)
|
|
{
|
|
uint32_t rid;
|
|
NTSTATUS status;
|
|
|
|
rid = BASE_RID; /* Default if not set */
|
|
|
|
if (!tdbsam_open(tdbsam_filename)) {
|
|
DEBUG(0,("tdbsam_new_rid: failed to open %s!\n",
|
|
tdbsam_filename));
|
|
return false;
|
|
}
|
|
|
|
status = dbwrap_trans_change_uint32_atomic_bystring(
|
|
db_sam, NEXT_RID_STRING, &rid, 1);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(3, ("tdbsam_new_rid: Failed to increase %s: %s\n",
|
|
NEXT_RID_STRING, nt_errstr(status)));
|
|
return false;
|
|
}
|
|
|
|
*prid = rid;
|
|
|
|
return true;
|
|
}
|
|
|
|
struct tdbsam_search_state {
|
|
struct pdb_methods *methods;
|
|
uint32_t acct_flags;
|
|
|
|
uint32_t *rids;
|
|
uint32_t num_rids;
|
|
ssize_t array_size;
|
|
uint32_t current;
|
|
};
|
|
|
|
static int tdbsam_collect_rids(struct db_record *rec, void *private_data)
|
|
{
|
|
struct tdbsam_search_state *state = talloc_get_type_abort(
|
|
private_data, struct tdbsam_search_state);
|
|
size_t prefixlen = strlen(RIDPREFIX);
|
|
uint32_t rid;
|
|
TDB_DATA key;
|
|
|
|
key = dbwrap_record_get_key(rec);
|
|
|
|
if ((key.dsize < prefixlen)
|
|
|| (strncmp((char *)key.dptr, RIDPREFIX, prefixlen))) {
|
|
return 0;
|
|
}
|
|
|
|
rid = strtoul((char *)key.dptr+prefixlen, NULL, 16);
|
|
|
|
ADD_TO_LARGE_ARRAY(state, uint32_t, rid, &state->rids, &state->num_rids,
|
|
&state->array_size);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void tdbsam_search_end(struct pdb_search *search)
|
|
{
|
|
struct tdbsam_search_state *state = talloc_get_type_abort(
|
|
search->private_data, struct tdbsam_search_state);
|
|
TALLOC_FREE(state);
|
|
}
|
|
|
|
static bool tdbsam_search_next_entry(struct pdb_search *search,
|
|
struct samr_displayentry *entry)
|
|
{
|
|
struct tdbsam_search_state *state = talloc_get_type_abort(
|
|
search->private_data, struct tdbsam_search_state);
|
|
struct samu *user = NULL;
|
|
NTSTATUS status;
|
|
uint32_t rid;
|
|
|
|
again:
|
|
TALLOC_FREE(user);
|
|
user = samu_new(talloc_tos());
|
|
if (user == NULL) {
|
|
DEBUG(0, ("samu_new failed\n"));
|
|
return false;
|
|
}
|
|
|
|
if (state->current == state->num_rids) {
|
|
TALLOC_FREE(user);
|
|
return false;
|
|
}
|
|
|
|
rid = state->rids[state->current++];
|
|
|
|
status = tdbsam_getsampwrid(state->methods, user, rid);
|
|
|
|
if (NT_STATUS_EQUAL(status, NT_STATUS_NO_SUCH_USER)) {
|
|
/*
|
|
* Someone has deleted that user since we listed the RIDs
|
|
*/
|
|
goto again;
|
|
}
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(10, ("tdbsam_getsampwrid failed: %s\n",
|
|
nt_errstr(status)));
|
|
TALLOC_FREE(user);
|
|
return false;
|
|
}
|
|
|
|
if ((state->acct_flags != 0) &&
|
|
((state->acct_flags & pdb_get_acct_ctrl(user)) == 0)) {
|
|
goto again;
|
|
}
|
|
|
|
entry->acct_flags = pdb_get_acct_ctrl(user);
|
|
entry->rid = rid;
|
|
entry->account_name = talloc_strdup(search, pdb_get_username(user));
|
|
entry->fullname = talloc_strdup(search, pdb_get_fullname(user));
|
|
entry->description = talloc_strdup(search, pdb_get_acct_desc(user));
|
|
|
|
TALLOC_FREE(user);
|
|
|
|
if ((entry->account_name == NULL) || (entry->fullname == NULL)
|
|
|| (entry->description == NULL)) {
|
|
DEBUG(0, ("talloc_strdup failed\n"));
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool tdbsam_search_users(struct pdb_methods *methods,
|
|
struct pdb_search *search,
|
|
uint32_t acct_flags)
|
|
{
|
|
struct tdbsam_search_state *state;
|
|
|
|
if (!tdbsam_open(tdbsam_filename)) {
|
|
DEBUG(0,("tdbsam_getsampwnam: failed to open %s!\n",
|
|
tdbsam_filename));
|
|
return false;
|
|
}
|
|
|
|
state = talloc_zero(search, struct tdbsam_search_state);
|
|
if (state == NULL) {
|
|
DEBUG(0, ("talloc failed\n"));
|
|
return false;
|
|
}
|
|
state->acct_flags = acct_flags;
|
|
state->methods = methods;
|
|
|
|
dbwrap_traverse_read(db_sam, tdbsam_collect_rids, state, NULL);
|
|
|
|
search->private_data = state;
|
|
search->next_entry = tdbsam_search_next_entry;
|
|
search->search_end = tdbsam_search_end;
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool tdbsam_is_responsible_for_builtin(struct pdb_methods *m)
|
|
{
|
|
return map_builtin;
|
|
}
|
|
|
|
/*********************************************************************
|
|
Initialize the tdb sam backend. Setup the dispath table of methods,
|
|
open the tdb, etc...
|
|
*********************************************************************/
|
|
|
|
static NTSTATUS pdb_init_tdbsam(struct pdb_methods **pdb_method, const char *location)
|
|
{
|
|
NTSTATUS nt_status;
|
|
char *tdbfile = NULL;
|
|
const char *pfile = location;
|
|
|
|
if (!NT_STATUS_IS_OK(nt_status = make_pdb_method( pdb_method ))) {
|
|
return nt_status;
|
|
}
|
|
|
|
(*pdb_method)->name = "tdbsam";
|
|
|
|
(*pdb_method)->getsampwnam = tdbsam_getsampwnam;
|
|
(*pdb_method)->getsampwsid = tdbsam_getsampwsid;
|
|
(*pdb_method)->add_sam_account = tdbsam_add_sam_account;
|
|
(*pdb_method)->update_sam_account = tdbsam_update_sam_account;
|
|
(*pdb_method)->delete_sam_account = tdbsam_delete_sam_account;
|
|
(*pdb_method)->rename_sam_account = tdbsam_rename_sam_account;
|
|
(*pdb_method)->search_users = tdbsam_search_users;
|
|
|
|
(*pdb_method)->capabilities = tdbsam_capabilities;
|
|
(*pdb_method)->new_rid = tdbsam_new_rid;
|
|
|
|
(*pdb_method)->is_responsible_for_builtin =
|
|
tdbsam_is_responsible_for_builtin;
|
|
map_builtin = lp_parm_bool(-1, "tdbsam", "map builtin", true);
|
|
|
|
/* save the path for later */
|
|
|
|
if (!location) {
|
|
if (asprintf(&tdbfile, "%s/%s", lp_private_dir(),
|
|
PASSDB_FILE_NAME) < 0) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
pfile = tdbfile;
|
|
}
|
|
tdbsam_filename = SMB_STRDUP(pfile);
|
|
if (!tdbsam_filename) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
SAFE_FREE(tdbfile);
|
|
|
|
/* no private data */
|
|
|
|
(*pdb_method)->private_data = NULL;
|
|
(*pdb_method)->free_private_data = NULL;
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
NTSTATUS pdb_tdbsam_init(TALLOC_CTX *ctx)
|
|
{
|
|
return smb_register_passdb(PASSDB_INTERFACE_VERSION, "tdbsam", pdb_init_tdbsam);
|
|
}
|