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-rw-r--r--source3/auth/auth_sam.c315
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;
+}
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