-/*
+/*
Unix SMB/CIFS implementation.
Password and authentication handling
Copyright (C) Jeremy Allison 1996-2002
Copyright (C) Andrew Tridgell 2002
Copyright (C) Gerald (Jerry) Carter 2000
Copyright (C) Stefan (metze) Metzmacher 2002
-
+
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
-
+
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
-
+
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
+#include "passdb/machine_sid.h"
+#include "secrets.h"
+#include "dbwrap/dbwrap.h"
+#include "../libcli/security/security.h"
/* NOTE! the global_sam_sid is the SID of our local SAM. This is only
equal to the domain SID when we are a DC, otherwise its our
workstation SID */
-static DOM_SID *global_sam_sid=NULL;
+static struct dom_sid *global_sam_sid=NULL;
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_PASSDB
Read a SID from a file. This is for compatibility with the old MACHINE.SID
style of SID storage
****************************************************************************/
-static BOOL read_sid_from_file(const char *fname, DOM_SID *sid)
+
+static bool read_sid_from_file(const char *fname, struct dom_sid *sid)
{
char **lines;
int numlines;
- BOOL ret;
+ bool ret;
+
+ lines = file_lines_load(fname, &numlines,0, NULL);
- lines = file_lines_load(fname, &numlines);
-
if (!lines || numlines < 1) {
- if (lines) file_lines_free(lines);
+ TALLOC_FREE(lines);
return False;
}
-
+
ret = string_to_sid(sid, lines[0]);
- file_lines_free(lines);
+ TALLOC_FREE(lines);
return ret;
}
/*
generate a random sid - used to build our own sid if we don't have one
*/
-static void generate_random_sid(DOM_SID *sid)
+static void generate_random_sid(struct dom_sid *sid)
{
int i;
uchar raw_sid_data[12];
- memset((char *)sid, '\0', sizeof(*sid));
+ ZERO_STRUCTP(sid);
+
sid->sid_rev_num = 1;
sid->id_auth[5] = 5;
sid->num_auths = 0;
sid->sub_auths[sid->num_auths++] = 21;
- generate_random_buffer(raw_sid_data, 12, True);
+ generate_random_buffer(raw_sid_data, 12);
for (i = 0; i < 3; i++)
sid->sub_auths[sid->num_auths++] = IVAL(raw_sid_data, i*4);
}
Generate the global machine sid.
****************************************************************************/
-static BOOL pdb_generate_sam_sid(void)
+static struct dom_sid *pdb_generate_sam_sid(void)
{
+ struct dom_sid domain_sid;
char *fname = NULL;
- extern pstring global_myname;
- extern fstring global_myworkgroup;
- BOOL is_dc = False;
-
- if(global_sam_sid==NULL)
- if(!(global_sam_sid=(DOM_SID *)malloc(sizeof(DOM_SID))))
- return False;
-
- generate_wellknown_sids();
-
- switch (lp_server_role()) {
- case ROLE_DOMAIN_PDC:
- case ROLE_DOMAIN_BDC:
- is_dc = True;
- break;
- default:
- is_dc = False;
- break;
+ struct dom_sid *sam_sid;
+
+ if(!(sam_sid=SMB_MALLOC_P(struct dom_sid)))
+ return NULL;
+
+ if ( IS_DC ) {
+ if (secrets_fetch_domain_sid(lp_workgroup(), &domain_sid)) {
+ sid_copy(sam_sid, &domain_sid);
+ return sam_sid;
+ }
}
- if (secrets_fetch_domain_sid(global_myname, global_sam_sid)) {
- DOM_SID domain_sid;
+ if (secrets_fetch_domain_sid(lp_netbios_name(), sam_sid)) {
/* We got our sid. If not a pdc/bdc, we're done. */
- if (!is_dc)
- return True;
+ if ( !IS_DC )
+ return sam_sid;
- if (!secrets_fetch_domain_sid(global_myworkgroup, &domain_sid)) {
+ if (!secrets_fetch_domain_sid(lp_workgroup(), &domain_sid)) {
/* No domain sid and we're a pdc/bdc. Store it */
- if (!secrets_store_domain_sid(global_myworkgroup, global_sam_sid)) {
+ if (!secrets_store_domain_sid(lp_workgroup(), sam_sid)) {
DEBUG(0,("pdb_generate_sam_sid: Can't store domain SID as a pdc/bdc.\n"));
- return False;
+ SAFE_FREE(sam_sid);
+ return NULL;
}
- return True;
+ return sam_sid;
}
- if (!sid_equal(&domain_sid, global_sam_sid)) {
+ if (!dom_sid_equal(&domain_sid, sam_sid)) {
- /* Domain name sid doesn't match global sam sid. Re-store global sam sid as domain sid. */
+ /* Domain name sid doesn't match global sam sid. Re-store domain sid as 'local' sid. */
DEBUG(0,("pdb_generate_sam_sid: Mismatched SIDs as a pdc/bdc.\n"));
- if (!secrets_store_domain_sid(global_myworkgroup, global_sam_sid)) {
- DEBUG(0,("pdb_generate_sam_sid: Can't re-store domain SID as a pdc/bdc.\n"));
- return False;
+ if (!secrets_store_domain_sid(lp_netbios_name(), &domain_sid)) {
+ DEBUG(0,("pdb_generate_sam_sid: Can't re-store domain SID for local sid as PDC/BDC.\n"));
+ SAFE_FREE(sam_sid);
+ return NULL;
}
- return True;
+ return sam_sid;
}
- return True;
-
+ return sam_sid;
}
/* check for an old MACHINE.SID file for backwards compatibility */
- asprintf(&fname, "%s/MACHINE.SID", lp_private_dir());
+ if (asprintf(&fname, "%s/MACHINE.SID", lp_private_dir()) == -1) {
+ SAFE_FREE(sam_sid);
+ return NULL;
+ }
- if (read_sid_from_file(fname, global_sam_sid)) {
+ if (read_sid_from_file(fname, sam_sid)) {
/* remember it for future reference and unlink the old MACHINE.SID */
- if (!secrets_store_domain_sid(global_myname, global_sam_sid)) {
+ if (!secrets_store_domain_sid(lp_netbios_name(), sam_sid)) {
DEBUG(0,("pdb_generate_sam_sid: Failed to store SID from file.\n"));
SAFE_FREE(fname);
- return False;
+ SAFE_FREE(sam_sid);
+ return NULL;
}
unlink(fname);
- if (is_dc) {
- if (!secrets_store_domain_sid(global_myworkgroup, global_sam_sid)) {
+ if ( !IS_DC ) {
+ if (!secrets_store_domain_sid(lp_workgroup(), sam_sid)) {
DEBUG(0,("pdb_generate_sam_sid: Failed to store domain SID from file.\n"));
SAFE_FREE(fname);
- return False;
+ SAFE_FREE(sam_sid);
+ return NULL;
}
}
/* Stored the old sid from MACHINE.SID successfully.*/
SAFE_FREE(fname);
- return True;
+ return sam_sid;
}
SAFE_FREE(fname);
/* we don't have the SID in secrets.tdb, we will need to
generate one and save it */
- generate_random_sid(global_sam_sid);
+ generate_random_sid(sam_sid);
- if (!secrets_store_domain_sid(global_myname, global_sam_sid)) {
+ if (!secrets_store_domain_sid(lp_netbios_name(), sam_sid)) {
DEBUG(0,("pdb_generate_sam_sid: Failed to store generated machine SID.\n"));
- return False;
+ SAFE_FREE(sam_sid);
+ return NULL;
}
- if (is_dc) {
- if (!secrets_store_domain_sid(global_myworkgroup, global_sam_sid)) {
+ if ( IS_DC ) {
+ if (!secrets_store_domain_sid(lp_workgroup(), sam_sid)) {
DEBUG(0,("pdb_generate_sam_sid: Failed to store generated domain SID.\n"));
- return False;
+ SAFE_FREE(sam_sid);
+ return NULL;
}
}
- return True;
-}
+ return sam_sid;
+}
/* return our global_sam_sid */
-DOM_SID *get_global_sam_sid(void)
+struct dom_sid *get_global_sam_sid(void)
{
+ struct db_context *db;
+
if (global_sam_sid != NULL)
return global_sam_sid;
-
- /* memory for global_sam_sid is allocated in
- pdb_generate_sam_sid() is needed*/
- if (!pdb_generate_sam_sid())
- global_sam_sid=NULL;
-
+ /*
+ * memory for global_sam_sid is allocated in
+ * pdb_generate_sam_sid() as needed
+ *
+ * Note: this is guarded by a transaction
+ * to prevent races on startup which
+ * can happen with some dbwrap backends
+ */
+
+ db = secrets_db_ctx();
+ if (!db) {
+ smb_panic("could not open secrets db");
+ }
+
+ if (dbwrap_transaction_start(db) != 0) {
+ smb_panic("could not start transaction on secrets db");
+ }
+
+ if (!(global_sam_sid = pdb_generate_sam_sid())) {
+ dbwrap_transaction_cancel(db);
+ smb_panic("could not generate a machine SID");
+ }
+
+ if (dbwrap_transaction_commit(db) != 0) {
+ smb_panic("could not start commit secrets db");
+ }
+
return global_sam_sid;
}
+/**
+ * Force get_global_sam_sid to requery the backends
+ */
+void reset_global_sam_sid(void)
+{
+ SAFE_FREE(global_sam_sid);
+}
+
+/*****************************************************************
+ Check if the SID is our sam SID (S-1-5-21-x-y-z).
+*****************************************************************/
+
+bool sid_check_is_our_sam(const struct dom_sid *sid)
+{
+ return dom_sid_equal(sid, get_global_sam_sid());
+}
+
+/*****************************************************************
+ Check if the SID is our domain SID (S-1-5-21-x-y-z).
+*****************************************************************/
+
+bool sid_check_is_in_our_sam(const struct dom_sid *sid)
+{
+ struct dom_sid dom_sid;
+
+ sid_copy(&dom_sid, sid);
+ sid_split_rid(&dom_sid, NULL);
+ return sid_check_is_our_sam(&dom_sid);
+}
git.samba.org / bbaumbach / samba-autobuild / .git / blobdiff