--- /dev/null
+/*
+ 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
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.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;
+
+#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)
+{
+ char **lines;
+ int numlines;
+ BOOL ret;
+
+ lines = file_lines_load(fname, &numlines);
+
+ if (!lines || numlines < 1) {
+ if (lines) file_lines_free(lines);
+ return False;
+ }
+
+ ret = string_to_sid(sid, lines[0]);
+ file_lines_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)
+{
+ int i;
+ uchar raw_sid_data[12];
+
+ memset((char *)sid, '\0', sizeof(*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);
+ for (i = 0; i < 3; i++)
+ sid->sub_auths[sid->num_auths++] = IVAL(raw_sid_data, i*4);
+}
+
+/****************************************************************************
+ Generate the global machine sid.
+****************************************************************************/
+
+static DOM_SID *pdb_generate_sam_sid(void)
+{
+ DOM_SID domain_sid;
+ char *fname = NULL;
+ DOM_SID *sam_sid;
+
+ if(!(sam_sid=SMB_MALLOC_P(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(), sam_sid)) {
+
+ /* We got our sid. If not a pdc/bdc, we're done. */
+ if ( !IS_DC )
+ return sam_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(lp_workgroup(), sam_sid)) {
+ DEBUG(0,("pdb_generate_sam_sid: Can't store domain SID as a pdc/bdc.\n"));
+ SAFE_FREE(sam_sid);
+ return NULL;
+ }
+ return sam_sid;
+ }
+
+ if (!sid_equal(&domain_sid, sam_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_myname(), &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 sam_sid;
+ }
+
+ return sam_sid;
+
+ }
+
+ /* check for an old MACHINE.SID file for backwards compatibility */
+ asprintf(&fname, "%s/MACHINE.SID", lp_private_dir());
+
+ 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(), sam_sid)) {
+ DEBUG(0,("pdb_generate_sam_sid: Failed to store SID from file.\n"));
+ SAFE_FREE(fname);
+ SAFE_FREE(sam_sid);
+ return NULL;
+ }
+ unlink(fname);
+ 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);
+ SAFE_FREE(sam_sid);
+ return NULL;
+ }
+ }
+
+ /* Stored the old sid from MACHINE.SID successfully.*/
+ SAFE_FREE(fname);
+ 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(sam_sid);
+
+ if (!secrets_store_domain_sid(global_myname(), sam_sid)) {
+ DEBUG(0,("pdb_generate_sam_sid: Failed to store generated machine SID.\n"));
+ SAFE_FREE(sam_sid);
+ return NULL;
+ }
+ 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"));
+ SAFE_FREE(sam_sid);
+ return NULL;
+ }
+ }
+
+ return sam_sid;
+}
+
+/* return our global_sam_sid */
+DOM_SID *get_global_sam_sid(void)
+{
+ if (global_sam_sid != NULL)
+ return global_sam_sid;
+
+ /* memory for global_sam_sid is allocated in
+ pdb_generate_sam_sid() as needed */
+
+ if (!(global_sam_sid = pdb_generate_sam_sid())) {
+ smb_panic("Could not generate a machine SID\n");
+ }
+
+ return global_sam_sid;
+}
+
+/**
+ * Force get_global_sam_sid to requery the backends
+ */
+void reset_global_sam_sid(void)
+{
+ SAFE_FREE(global_sam_sid);
+}
projects / samba / blobdiff