1 files changed, 432 insertions, 0 deletions

diff --git a/source4/auth/system_session.c b/source4/auth/system_session.c
new file mode 100644
index 0000000..17cfc4b
--- /dev/null
+++ b/source4/auth/system_session.c
@@ -0,0 +1,432 @@
+/* 
+   Unix SMB/CIFS implementation.
+   Authentication utility functions
+   Copyright (C) Andrew Tridgell 1992-1998
+   Copyright (C) Andrew Bartlett 2001-2010
+   Copyright (C) Jeremy Allison 2000-2001
+   Copyright (C) Rafal Szczesniak 2002
+   Copyright (C) Stefan Metzmacher 2005
+
+   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/security/security.h"
+#include "auth/credentials/credentials.h"
+#include "param/param.h"
+#include "auth/auth.h" /* for auth_user_info_dc */
+#include "auth/session.h"
+#include "auth/system_session_proto.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_AUTH
+
+/*
+  prevent the static system session being freed
+ */
+static int system_session_destructor(struct auth_session_info *info)
+{
+	return -1;
+}
+
+/* Create a security token for a session SYSTEM (the most
+ * trusted/privileged account), including the local machine account as
+ * the off-host credentials
+ */ 
+_PUBLIC_ struct auth_session_info *system_session(struct loadparm_context *lp_ctx)
+{
+	static struct auth_session_info *static_session;
+	NTSTATUS nt_status;
+
+	if (static_session) {
+		return static_session;
+	}
+
+	/*
+	 * Use NULL here, not the autofree context for this
+	 * static pointer. The destructor prevents freeing this
+	 * memory anyway.
+	 */
+	nt_status = auth_system_session_info(NULL,
+					     lp_ctx,
+					     &static_session);
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		TALLOC_FREE(static_session);
+		return NULL;
+	}
+	talloc_set_destructor(static_session, system_session_destructor);
+	return static_session;
+}
+
+NTSTATUS auth_system_session_info(TALLOC_CTX *parent_ctx, 
+				  struct loadparm_context *lp_ctx,
+				  struct auth_session_info **_session_info) 
+{
+	NTSTATUS nt_status;
+	struct auth_user_info_dc *user_info_dc = NULL;
+	struct auth_session_info *session_info = NULL;
+	TALLOC_CTX *mem_ctx = NULL;
+	bool ok;
+
+	mem_ctx = talloc_new(parent_ctx);
+	if (mem_ctx == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	
+	nt_status = auth_system_user_info_dc(mem_ctx, lpcfg_netbios_name(lp_ctx),
+					    &user_info_dc);
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		talloc_free(mem_ctx);
+		return nt_status;
+	}
+
+	/* references the user_info_dc into the session_info */
+	nt_status = auth_generate_session_info(parent_ctx, NULL, NULL, user_info_dc, AUTH_SESSION_INFO_SIMPLE_PRIVILEGES, &session_info);
+	talloc_free(mem_ctx);
+
+	NT_STATUS_NOT_OK_RETURN(nt_status);
+
+	session_info->credentials = cli_credentials_init(session_info);
+	if (!session_info->credentials) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	ok = cli_credentials_set_conf(session_info->credentials, lp_ctx);
+	if (!ok) {
+		return NT_STATUS_INTERNAL_ERROR;
+	}
+
+	cli_credentials_set_machine_account_pending(session_info->credentials, lp_ctx);
+	*_session_info = session_info;
+
+	return NT_STATUS_OK;
+}
+
+NTSTATUS auth_system_user_info_dc(TALLOC_CTX *mem_ctx, const char *netbios_name,
+				 struct auth_user_info_dc **_user_info_dc)
+{
+	struct auth_user_info_dc *user_info_dc;
+	struct auth_user_info *info;
+
+	user_info_dc = talloc_zero(mem_ctx, struct auth_user_info_dc);
+	NT_STATUS_HAVE_NO_MEMORY(user_info_dc);
+
+	/* This returns a pointer to a struct dom_sid, which is the
+	 * same as a 1 element list of struct dom_sid */
+	user_info_dc->num_sids = 1;
+	user_info_dc->sids = dom_sid_dup(user_info_dc, &global_sid_System);
+	NT_STATUS_HAVE_NO_MEMORY(user_info_dc->sids);
+
+	/* annoying, but the Anonymous really does have a session key, 
+	   and it is all zeros! */
+	user_info_dc->user_session_key = data_blob_talloc(user_info_dc, NULL, 16);
+	NT_STATUS_HAVE_NO_MEMORY(user_info_dc->user_session_key.data);
+
+	user_info_dc->lm_session_key = data_blob_talloc(user_info_dc, NULL, 16);
+	NT_STATUS_HAVE_NO_MEMORY(user_info_dc->lm_session_key.data);
+
+	data_blob_clear(&user_info_dc->user_session_key);
+	data_blob_clear(&user_info_dc->lm_session_key);
+
+	user_info_dc->info = info = talloc_zero(user_info_dc, struct auth_user_info);
+	NT_STATUS_HAVE_NO_MEMORY(user_info_dc->info);
+
+	info->account_name = talloc_strdup(info, "SYSTEM");
+	NT_STATUS_HAVE_NO_MEMORY(info->account_name);
+
+	info->domain_name = talloc_strdup(info, "NT AUTHORITY");
+	NT_STATUS_HAVE_NO_MEMORY(info->domain_name);
+
+	info->full_name = talloc_strdup(info, "System");
+	NT_STATUS_HAVE_NO_MEMORY(info->full_name);
+
+	info->logon_script = talloc_strdup(info, "");
+	NT_STATUS_HAVE_NO_MEMORY(info->logon_script);
+
+	info->profile_path = talloc_strdup(info, "");
+	NT_STATUS_HAVE_NO_MEMORY(info->profile_path);
+
+	info->home_directory = talloc_strdup(info, "");
+	NT_STATUS_HAVE_NO_MEMORY(info->home_directory);
+
+	info->home_drive = talloc_strdup(info, "");
+	NT_STATUS_HAVE_NO_MEMORY(info->home_drive);
+
+	info->logon_server = talloc_strdup(info, netbios_name);
+	NT_STATUS_HAVE_NO_MEMORY(info->logon_server);
+
+	info->last_logon = 0;
+	info->last_logoff = 0;
+	info->acct_expiry = 0;
+	info->last_password_change = 0;
+	info->allow_password_change = 0;
+	info->force_password_change = 0;
+
+	info->logon_count = 0;
+	info->bad_password_count = 0;
+
+	info->acct_flags = ACB_NORMAL;
+
+	info->authenticated = true;
+
+	*_user_info_dc = user_info_dc;
+
+	return NT_STATUS_OK;
+}
+
+
+static NTSTATUS auth_domain_admin_user_info_dc(TALLOC_CTX *mem_ctx,
+					      const char *netbios_name,
+					      const char *domain_name,
+					      struct dom_sid *domain_sid,
+					      struct auth_user_info_dc **_user_info_dc)
+{
+	struct auth_user_info_dc *user_info_dc;
+	struct auth_user_info *info;
+
+	user_info_dc = talloc_zero(mem_ctx, struct auth_user_info_dc);
+	NT_STATUS_HAVE_NO_MEMORY(user_info_dc);
+
+	user_info_dc->num_sids = 7;
+	user_info_dc->sids = talloc_array(user_info_dc, struct dom_sid, user_info_dc->num_sids);
+
+	user_info_dc->sids[PRIMARY_USER_SID_INDEX] = *domain_sid;
+	sid_append_rid(&user_info_dc->sids[PRIMARY_USER_SID_INDEX], DOMAIN_RID_ADMINISTRATOR);
+
+	user_info_dc->sids[PRIMARY_GROUP_SID_INDEX] = *domain_sid;
+	sid_append_rid(&user_info_dc->sids[PRIMARY_GROUP_SID_INDEX], DOMAIN_RID_USERS);
+
+	user_info_dc->sids[2] = global_sid_Builtin_Administrators;
+
+	user_info_dc->sids[3] = *domain_sid;
+	sid_append_rid(&user_info_dc->sids[3], DOMAIN_RID_ADMINS);
+	user_info_dc->sids[4] = *domain_sid;
+	sid_append_rid(&user_info_dc->sids[4], DOMAIN_RID_ENTERPRISE_ADMINS);
+	user_info_dc->sids[5] = *domain_sid;
+	sid_append_rid(&user_info_dc->sids[5], DOMAIN_RID_POLICY_ADMINS);
+	user_info_dc->sids[6] = *domain_sid;
+	sid_append_rid(&user_info_dc->sids[6], DOMAIN_RID_SCHEMA_ADMINS);
+
+	/* What should the session key be?*/
+	user_info_dc->user_session_key = data_blob_talloc(user_info_dc, NULL, 16);
+	NT_STATUS_HAVE_NO_MEMORY(user_info_dc->user_session_key.data);
+
+	user_info_dc->lm_session_key = data_blob_talloc(user_info_dc, NULL, 16);
+	NT_STATUS_HAVE_NO_MEMORY(user_info_dc->lm_session_key.data);
+
+	data_blob_clear(&user_info_dc->user_session_key);
+	data_blob_clear(&user_info_dc->lm_session_key);
+
+	user_info_dc->info = info = talloc_zero(user_info_dc, struct auth_user_info);
+	NT_STATUS_HAVE_NO_MEMORY(user_info_dc->info);
+
+	info->account_name = talloc_strdup(info, "Administrator");
+	NT_STATUS_HAVE_NO_MEMORY(info->account_name);
+
+	info->domain_name = talloc_strdup(info, domain_name);
+	NT_STATUS_HAVE_NO_MEMORY(info->domain_name);
+
+	info->full_name = talloc_strdup(info, "Administrator");
+	NT_STATUS_HAVE_NO_MEMORY(info->full_name);
+
+	info->logon_script = talloc_strdup(info, "");
+	NT_STATUS_HAVE_NO_MEMORY(info->logon_script);
+
+	info->profile_path = talloc_strdup(info, "");
+	NT_STATUS_HAVE_NO_MEMORY(info->profile_path);
+
+	info->home_directory = talloc_strdup(info, "");
+	NT_STATUS_HAVE_NO_MEMORY(info->home_directory);
+
+	info->home_drive = talloc_strdup(info, "");
+	NT_STATUS_HAVE_NO_MEMORY(info->home_drive);
+
+	info->logon_server = talloc_strdup(info, netbios_name);
+	NT_STATUS_HAVE_NO_MEMORY(info->logon_server);
+
+	info->last_logon = 0;
+	info->last_logoff = 0;
+	info->acct_expiry = 0;
+	info->last_password_change = 0;
+	info->allow_password_change = 0;
+	info->force_password_change = 0;
+
+	info->logon_count = 0;
+	info->bad_password_count = 0;
+
+	info->acct_flags = ACB_NORMAL;
+
+	info->authenticated = true;
+
+	*_user_info_dc = user_info_dc;
+
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS auth_domain_admin_session_info(TALLOC_CTX *parent_ctx,
+					       struct loadparm_context *lp_ctx,
+					       struct dom_sid *domain_sid,
+					       struct auth_session_info **session_info)
+{
+	NTSTATUS nt_status;
+	struct auth_user_info_dc *user_info_dc = NULL;
+	TALLOC_CTX *mem_ctx = talloc_new(parent_ctx);
+
+	NT_STATUS_HAVE_NO_MEMORY(mem_ctx);
+
+	nt_status = auth_domain_admin_user_info_dc(mem_ctx, lpcfg_netbios_name(lp_ctx),
+						  lpcfg_workgroup(lp_ctx), domain_sid,
+						  &user_info_dc);
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		talloc_free(mem_ctx);
+		return nt_status;
+	}
+
+	nt_status = auth_generate_session_info(mem_ctx, NULL, NULL, user_info_dc,
+					       AUTH_SESSION_INFO_SIMPLE_PRIVILEGES|AUTH_SESSION_INFO_AUTHENTICATED|AUTH_SESSION_INFO_DEFAULT_GROUPS,
+					       session_info);
+	/* There is already a reference between the sesion_info and user_info_dc */
+	if (NT_STATUS_IS_OK(nt_status)) {
+		talloc_steal(parent_ctx, *session_info);
+	}
+	talloc_free(mem_ctx);
+	return nt_status;
+}
+
+_PUBLIC_ struct auth_session_info *admin_session(TALLOC_CTX *mem_ctx, struct loadparm_context *lp_ctx, struct dom_sid *domain_sid)
+{
+	NTSTATUS nt_status;
+	struct auth_session_info *session_info = NULL;
+	nt_status = auth_domain_admin_session_info(mem_ctx,
+						   lp_ctx,
+						   domain_sid,
+						   &session_info);
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		return NULL;
+	}
+	return session_info;
+}
+
+_PUBLIC_ NTSTATUS auth_anonymous_session_info(TALLOC_CTX *parent_ctx, 
+					      struct loadparm_context *lp_ctx,
+					      struct auth_session_info **_session_info) 
+{
+	NTSTATUS nt_status;
+	struct auth_user_info_dc *user_info_dc = NULL;
+	struct auth_session_info *session_info = NULL;
+	TALLOC_CTX *mem_ctx = talloc_new(parent_ctx);
+	bool ok;
+	
+	nt_status = auth_anonymous_user_info_dc(mem_ctx,
+					       lpcfg_netbios_name(lp_ctx),
+					       &user_info_dc);
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		talloc_free(mem_ctx);
+		return nt_status;
+	}
+
+	/* references the user_info_dc into the session_info */
+	nt_status = auth_generate_session_info(parent_ctx, NULL, NULL, user_info_dc, AUTH_SESSION_INFO_SIMPLE_PRIVILEGES, &session_info);
+	talloc_free(mem_ctx);
+
+	NT_STATUS_NOT_OK_RETURN(nt_status);
+
+	session_info->credentials = cli_credentials_init(session_info);
+	if (!session_info->credentials) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	ok = cli_credentials_set_conf(session_info->credentials, lp_ctx);
+	if (!ok) {
+		return NT_STATUS_INTERNAL_ERROR;
+	}
+	cli_credentials_set_anonymous(session_info->credentials);
+	
+	*_session_info = session_info;
+
+	return NT_STATUS_OK;
+}
+
+_PUBLIC_ NTSTATUS auth_anonymous_user_info_dc(TALLOC_CTX *mem_ctx,
+				    const char *netbios_name,
+				    struct auth_user_info_dc **_user_info_dc)
+{
+	struct auth_user_info_dc *user_info_dc;
+	struct auth_user_info *info;
+	user_info_dc = talloc_zero(mem_ctx, struct auth_user_info_dc);
+	NT_STATUS_HAVE_NO_MEMORY(user_info_dc);
+
+	/* This returns a pointer to a struct dom_sid, which is the
+	 * same as a 1 element list of struct dom_sid */
+	user_info_dc->num_sids = 1;
+	user_info_dc->sids = dom_sid_dup(user_info_dc, &global_sid_Anonymous);
+	NT_STATUS_HAVE_NO_MEMORY(user_info_dc->sids);
+
+	/* annoying, but the Anonymous really does have a session key... */
+	user_info_dc->user_session_key = data_blob_talloc(user_info_dc, NULL, 16);
+	NT_STATUS_HAVE_NO_MEMORY(user_info_dc->user_session_key.data);
+
+	user_info_dc->lm_session_key = data_blob_talloc(user_info_dc, NULL, 16);
+	NT_STATUS_HAVE_NO_MEMORY(user_info_dc->lm_session_key.data);
+
+	/*  and it is all zeros! */
+	data_blob_clear(&user_info_dc->user_session_key);
+	data_blob_clear(&user_info_dc->lm_session_key);
+
+	user_info_dc->info = info = talloc_zero(user_info_dc, struct auth_user_info);
+	NT_STATUS_HAVE_NO_MEMORY(user_info_dc->info);
+
+	info->account_name = talloc_strdup(info, "ANONYMOUS LOGON");
+	NT_STATUS_HAVE_NO_MEMORY(info->account_name);
+
+	info->domain_name = talloc_strdup(info, "NT AUTHORITY");
+	NT_STATUS_HAVE_NO_MEMORY(info->domain_name);
+
+	info->full_name = talloc_strdup(info, "Anonymous Logon");
+	NT_STATUS_HAVE_NO_MEMORY(info->full_name);
+
+	info->logon_script = talloc_strdup(info, "");
+	NT_STATUS_HAVE_NO_MEMORY(info->logon_script);
+
+	info->profile_path = talloc_strdup(info, "");
+	NT_STATUS_HAVE_NO_MEMORY(info->profile_path);
+
+	info->home_directory = talloc_strdup(info, "");
+	NT_STATUS_HAVE_NO_MEMORY(info->home_directory);
+
+	info->home_drive = talloc_strdup(info, "");
+	NT_STATUS_HAVE_NO_MEMORY(info->home_drive);
+
+	info->logon_server = talloc_strdup(info, netbios_name);
+	NT_STATUS_HAVE_NO_MEMORY(info->logon_server);
+
+	info->last_logon = 0;
+	info->last_logoff = 0;
+	info->acct_expiry = 0;
+	info->last_password_change = 0;
+	info->allow_password_change = 0;
+	info->force_password_change = 0;
+
+	info->logon_count = 0;
+	info->bad_password_count = 0;
+
+	info->acct_flags = ACB_NORMAL;
+
+	info->authenticated = false;
+
+	*_user_info_dc = user_info_dc;
+
+	return NT_STATUS_OK;
+}
+