Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 315 insertions, 0 deletions

diff --git a/source3/auth/auth_sam.c b/source3/auth/auth_sam.c
new file mode 100644
index 0000000..a2ce101
--- /dev/null
+++ b/source3/auth/auth_sam.c
@@ -0,0 +1,315 @@
+/* 
+   Unix SMB/CIFS implementation.
+   Password and authentication handling
+   Copyright (C) Andrew Tridgell              1992-2000
+   Copyright (C) Luke Kenneth Casson Leighton 1996-2000
+   Copyright (C) Andrew Bartlett              2001-2003
+   Copyright (C) Gerald Carter                2003
+
+   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 "auth.h"
+#include "passdb.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_AUTH
+
+static NTSTATUS auth_sam_ignoredomain_auth(const struct auth_context *auth_context,
+					   void *my_private_data,
+					   TALLOC_CTX *mem_ctx,
+					   const struct auth_usersupplied_info *user_info,
+					   struct auth_serversupplied_info **server_info)
+{
+	if (!user_info || !auth_context) {
+		return NT_STATUS_UNSUCCESSFUL;
+	}
+
+	if (user_info->mapped.account_name == NULL ||
+	    user_info->mapped.account_name[0] == '\0')
+	{
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+
+	DBG_DEBUG("Check auth for: [%s]\\[%s]\n",
+		  user_info->mapped.domain_name,
+		  user_info->mapped.account_name);
+
+	return check_sam_security(&auth_context->challenge, mem_ctx,
+				  user_info, server_info);
+}
+
+/* module initialisation */
+static NTSTATUS auth_init_sam_ignoredomain(
+	struct auth_context *auth_context,
+	const char *param,
+	struct auth_methods **auth_method)
+{
+	struct auth_methods *result;
+
+	result = talloc_zero(auth_context, struct auth_methods);
+	if (result == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	result->auth = auth_sam_ignoredomain_auth;
+	result->name = "sam_ignoredomain";
+
+        *auth_method = result;
+	return NT_STATUS_OK;
+}
+
+
+/****************************************************************************
+Check SAM security (above) but with a few extra checks.
+****************************************************************************/
+
+static NTSTATUS auth_samstrict_auth(const struct auth_context *auth_context,
+				    void *my_private_data,
+				    TALLOC_CTX *mem_ctx,
+				    const struct auth_usersupplied_info *user_info,
+				    struct auth_serversupplied_info **server_info)
+{
+	const char *effective_domain = NULL;
+	bool is_local_name, is_my_domain;
+
+	if (!user_info || !auth_context) {
+		return NT_STATUS_LOGON_FAILURE;
+	}
+	effective_domain = user_info->mapped.domain_name;
+
+	if (user_info->mapped.account_name == NULL ||
+	    user_info->mapped.account_name[0] == '\0')
+	{
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+
+	if (lp_server_role() == ROLE_DOMAIN_MEMBER) {
+		const char *p = NULL;
+
+		p = strchr_m(user_info->mapped.account_name, '@');
+		if (p != NULL) {
+			/*
+			 * This needs to go to the DC,
+			 * even if @ is the last character
+			 */
+			return NT_STATUS_NOT_IMPLEMENTED;
+		}
+	}
+
+	if (effective_domain == NULL) {
+		effective_domain = "";
+	}
+
+	DBG_DEBUG("Check auth for: [%s]\\[%s]\n",
+		  effective_domain,
+		  user_info->mapped.account_name);
+
+
+	if (strequal(effective_domain, "") || strequal(effective_domain, ".")) {
+		/*
+		 * An empty domain name or '.' should be handled
+		 * as the local SAM name.
+		 */
+		effective_domain = lp_netbios_name();
+	}
+
+	is_local_name = is_myname(effective_domain);
+	is_my_domain  = strequal(effective_domain, lp_workgroup());
+
+	/* check whether or not we service this domain/workgroup name */
+
+	switch ( lp_server_role() ) {
+		case ROLE_STANDALONE:
+		case ROLE_DOMAIN_MEMBER:
+			if ( !is_local_name ) {
+				DEBUG(6,("check_samstrict_security: %s is not one of my local names (%s)\n",
+					effective_domain, (lp_server_role() == ROLE_DOMAIN_MEMBER
+					? "ROLE_DOMAIN_MEMBER" : "ROLE_STANDALONE") ));
+				return NT_STATUS_NOT_IMPLEMENTED;
+			}
+
+			break;
+		case ROLE_DOMAIN_PDC:
+		case ROLE_DOMAIN_BDC:
+		case ROLE_IPA_DC:
+			if (!is_local_name && !is_my_domain) {
+			       /* If we are running on a DC that has PASSDB module with domain
+				* information, check if DNS forest name is matching the domain
+				* name. This is the case of IPA domain controller when
+				* trusted AD DCs attempt to authenticate IPA users using
+				* the forest root domain (which is the only domain in IPA).
+				*/
+				struct pdb_domain_info *dom_info = NULL;
+
+				dom_info = pdb_get_domain_info(mem_ctx);
+				if ((dom_info != NULL) && (dom_info->dns_forest != NULL)) {
+					is_my_domain = strequal(user_info->mapped.domain_name,
+								dom_info->dns_forest);
+				}
+
+				TALLOC_FREE(dom_info);
+				if (!is_my_domain) {
+					DEBUG(6,("check_samstrict_security: %s is not one "
+						 "of my local names or domain name (DC)\n",
+						 effective_domain));
+					return NT_STATUS_NOT_IMPLEMENTED;
+				}
+			}
+
+			break;
+		default: /* name is ok */
+			break;
+	}
+
+	return check_sam_security(&auth_context->challenge, mem_ctx,
+				  user_info, server_info);
+}
+
+/* module initialisation */
+static NTSTATUS auth_init_sam(
+	struct auth_context *auth_context,
+	const char *param,
+	struct auth_methods **auth_method)
+{
+	struct auth_methods *result;
+
+	if (lp_server_role() == ROLE_ACTIVE_DIRECTORY_DC
+	    && !lp_parm_bool(-1, "server role check", "inhibit", false)) {
+		DEBUG(0, ("server role = 'active directory domain controller' not compatible with running the auth_sam module. \n"));
+		DEBUGADD(0, ("You should not set 'auth methods' when running the AD DC.\n"));
+		exit(1);
+	}
+
+	result = talloc_zero(auth_context, struct auth_methods);
+	if (result == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	result->auth = auth_samstrict_auth;
+	result->name = "sam";
+	*auth_method = result;
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS auth_sam_netlogon3_auth(const struct auth_context *auth_context,
+					void *my_private_data,
+					TALLOC_CTX *mem_ctx,
+					const struct auth_usersupplied_info *user_info,
+					struct auth_serversupplied_info **server_info)
+{
+	const char *effective_domain = NULL;
+	bool is_my_domain;
+
+	if (!user_info || !auth_context) {
+		return NT_STATUS_LOGON_FAILURE;
+	}
+	effective_domain = user_info->mapped.domain_name;
+
+	if (user_info->mapped.account_name == NULL ||
+	    user_info->mapped.account_name[0] == '\0')
+	{
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+
+	if (effective_domain == NULL) {
+		effective_domain = "";
+	}
+
+	DBG_DEBUG("Check auth for: [%s]\\[%s]\n",
+		  effective_domain,
+		  user_info->mapped.account_name);
+
+	/* check whether or not we service this domain/workgroup name */
+
+	switch (lp_server_role()) {
+	case ROLE_DOMAIN_PDC:
+	case ROLE_DOMAIN_BDC:
+	case ROLE_IPA_DC:
+		break;
+	default:
+		DBG_ERR("Invalid server role\n");
+		return NT_STATUS_INVALID_SERVER_STATE;
+	}
+
+	if (strequal(effective_domain, "") || strequal(effective_domain, ".")) {
+		/*
+		 * An empty domain name or '.' should be handled
+		 * as the local SAM name.
+		 */
+		effective_domain = lp_workgroup();
+	}
+
+	is_my_domain = strequal(user_info->mapped.domain_name, lp_workgroup());
+	if (!is_my_domain) {
+	       /* If we are running on a DC that has PASSDB module with domain
+		* information, check if DNS forest name is matching the domain
+		* name. This is the case of IPA domain controller when
+		* trusted AD DCs attempt to authenticate IPA users using
+		* the forest root domain (which is the only domain in IPA).
+		*/
+		struct pdb_domain_info *dom_info = NULL;
+		dom_info = pdb_get_domain_info(mem_ctx);
+
+		if ((dom_info != NULL) && (dom_info->dns_forest != NULL)) {
+			is_my_domain = strequal(user_info->mapped.domain_name,
+						dom_info->dns_forest);
+		}
+
+		TALLOC_FREE(dom_info);
+	}
+
+	if (!is_my_domain) {
+		DBG_INFO("%s is not our domain name (DC for %s)\n",
+			 effective_domain, lp_workgroup());
+		return NT_STATUS_NOT_IMPLEMENTED;
+	}
+
+	return check_sam_security(&auth_context->challenge, mem_ctx,
+				  user_info, server_info);
+}
+
+/* module initialisation */
+static NTSTATUS auth_init_sam_netlogon3(
+	struct auth_context *auth_context,
+	const char *param,
+	struct auth_methods **auth_method)
+{
+	struct auth_methods *result;
+
+	if (lp_server_role() == ROLE_ACTIVE_DIRECTORY_DC
+	    && !lp_parm_bool(-1, "server role check", "inhibit", false)) {
+		DEBUG(0, ("server role = 'active directory domain controller' "
+			  "not compatible with running the auth_sam module.\n"));
+		DEBUGADD(0, ("You should not set 'auth methods' when "
+			     "running the AD DC.\n"));
+		exit(1);
+	}
+
+	result = talloc_zero(auth_context, struct auth_methods);
+	if (result == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	result->auth = auth_sam_netlogon3_auth;
+	result->name = "sam_netlogon3";
+	*auth_method = result;
+	return NT_STATUS_OK;
+}
+
+NTSTATUS auth_sam_init(TALLOC_CTX *mem_ctx)
+{
+	smb_register_auth(AUTH_INTERFACE_VERSION, "sam", auth_init_sam);
+	smb_register_auth(AUTH_INTERFACE_VERSION, "sam_ignoredomain", auth_init_sam_ignoredomain);
+	smb_register_auth(AUTH_INTERFACE_VERSION, "sam_netlogon3", auth_init_sam_netlogon3);
+	return NT_STATUS_OK;
+}