From 8daa83a594a2e98f39d764422bfbdbc62c9efd44 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Fri, 19 Apr 2024 19:20:00 +0200
Subject: Adding upstream version 2:4.20.0+dfsg.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 source4/dsdb/samdb/samdb_privilege.c | 134 +++++++++++++++++++++++++++++++++++
 1 file changed, 134 insertions(+)
 create mode 100644 source4/dsdb/samdb/samdb_privilege.c

(limited to 'source4/dsdb/samdb/samdb_privilege.c')

diff --git a/source4/dsdb/samdb/samdb_privilege.c b/source4/dsdb/samdb/samdb_privilege.c
new file mode 100644
index 0000000..c50243c
--- /dev/null
+++ b/source4/dsdb/samdb/samdb_privilege.c
@@ -0,0 +1,134 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   manipulate privilege records in samdb
+
+   Copyright (C) Andrew Tridgell 2004
+   
+   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 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "libcli/ldap/ldap_ndr.h"
+#include "dsdb/samdb/samdb.h"
+#include "auth/auth.h"
+#include "libcli/security/security.h"
+#include "../lib/util/util_ldb.h"
+#include "param/param.h"
+#include "ldb_wrap.h"
+
+/* connect to the privilege database */
+struct ldb_context *privilege_connect(TALLOC_CTX *mem_ctx, 
+				      struct loadparm_context *lp_ctx)
+{
+	return ldb_wrap_connect(mem_ctx, NULL, lp_ctx, "privilege.ldb",
+				NULL, NULL, 0);
+}
+
+/*
+  add privilege bits for one sid to a security_token
+*/
+static NTSTATUS samdb_privilege_setup_sid(struct ldb_context *pdb, TALLOC_CTX *mem_ctx,
+					  struct security_token *token,
+					  const struct dom_sid *sid)
+{
+	const char * const attrs[] = { "privilege", NULL };
+	struct ldb_message **res = NULL;
+	struct ldb_message_element *el;
+	unsigned int i;
+	int ret;
+	char *sidstr;
+
+	sidstr = ldap_encode_ndr_dom_sid(mem_ctx, sid);
+	NT_STATUS_HAVE_NO_MEMORY(sidstr);
+
+	ret = gendb_search(pdb, mem_ctx, NULL, &res, attrs, "objectSid=%s", sidstr);
+	talloc_free(sidstr);
+	if (ret != 1) {
+		/* not an error to not match */
+		return NT_STATUS_OK;
+	}
+
+	el = ldb_msg_find_element(res[0], "privilege");
+	if (el == NULL) {
+		return NT_STATUS_OK;
+	}
+
+	for (i=0;i<el->num_values;i++) {
+		const char *priv_str = (const char *)el->values[i].data;
+		enum sec_privilege privilege = sec_privilege_id(priv_str);
+		if (privilege == SEC_PRIV_INVALID) {
+			uint32_t right_bit = sec_right_bit(priv_str);
+			security_token_set_right_bit(token, right_bit);
+			if (right_bit == 0) {
+				DEBUG(1,("Unknown privilege '%s' in samdb\n",
+					 priv_str));
+			}
+			continue;
+		}
+		security_token_set_privilege(token, privilege);
+	}
+
+	return NT_STATUS_OK;
+}
+
+/*
+  setup the privilege mask for this security token based on our
+  local SAM
+*/
+NTSTATUS samdb_privilege_setup(struct loadparm_context *lp_ctx, struct security_token *token)
+{
+	struct ldb_context *pdb;
+	TALLOC_CTX *mem_ctx;
+	unsigned int i;
+	NTSTATUS status;
+
+	/* Shortcuts to prevent recursion and avoid lookups */
+	if (token->sids == NULL) {
+		token->privilege_mask = 0;
+		return NT_STATUS_OK;
+	}
+
+	if (security_token_is_system(token)) {
+		token->privilege_mask = ~0;
+		return NT_STATUS_OK;
+	}
+
+	if (security_token_is_anonymous(token)) {
+		token->privilege_mask = 0;
+		return NT_STATUS_OK;
+	}
+
+	mem_ctx = talloc_new(token);
+	pdb = privilege_connect(mem_ctx, lp_ctx);
+	if (pdb == NULL) {
+		talloc_free(mem_ctx);
+		return NT_STATUS_INTERNAL_DB_CORRUPTION;
+	}
+
+	token->privilege_mask = 0;
+	
+	for (i=0;i<token->num_sids;i++) {
+		status = samdb_privilege_setup_sid(pdb, mem_ctx,
+						   token, &token->sids[i]);
+		if (!NT_STATUS_IS_OK(status)) {
+			talloc_free(mem_ctx);
+			return status;
+		}
+	}
+
+	talloc_free(mem_ctx);
+
+	return NT_STATUS_OK;	
+}
-- 
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