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6cf29b3e4f
This makes the structure much more like NT_USER_TOKEN in the source3/ code. (The remaining changes are that privilages still need to be merged) Andrew Bartlett
538 lines
17 KiB
C
538 lines
17 KiB
C
/*
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Unix SMB/CIFS implementation.
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Authentication utility functions
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Copyright (C) Andrew Tridgell 1992-1998
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Copyright (C) Andrew Bartlett 2001-2010
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Copyright (C) Jeremy Allison 2000-2001
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Copyright (C) Rafal Szczesniak 2002
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Copyright (C) Stefan Metzmacher 2005
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "libcli/security/security.h"
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#include "auth/credentials/credentials.h"
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#include "param/param.h"
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#include "auth/auth.h" /* for auth_serversupplied_info */
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#include "auth/session.h"
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#include "auth/system_session_proto.h"
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/**
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* Create the SID list for this user.
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*
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* @note Specialised version for system sessions that doesn't use the SAM.
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*/
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static NTSTATUS create_token(TALLOC_CTX *mem_ctx,
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struct dom_sid *user_sid,
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struct dom_sid *group_sid,
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unsigned int n_groupSIDs,
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struct dom_sid **groupSIDs,
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bool is_authenticated,
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struct security_token **token)
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{
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struct security_token *ptoken;
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unsigned int i;
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ptoken = security_token_initialise(mem_ctx);
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NT_STATUS_HAVE_NO_MEMORY(ptoken);
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ptoken->sids = talloc_array(ptoken, struct dom_sid, n_groupSIDs + 5);
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NT_STATUS_HAVE_NO_MEMORY(ptoken->sids);
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ptoken->sids[PRIMARY_USER_SID_INDEX] = *user_sid;
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ptoken->sids[PRIMARY_GROUP_SID_INDEX] = *group_sid;
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ptoken->privilege_mask = 0;
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/*
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* Finally add the "standard" SIDs.
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* The only difference between guest and "anonymous"
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* is the addition of Authenticated_Users.
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*/
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if (!dom_sid_parse(SID_WORLD, &ptoken->sids[2])) {
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return NT_STATUS_INTERNAL_ERROR;
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}
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if (!dom_sid_parse(SID_NT_NETWORK, &ptoken->sids[3])) {
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return NT_STATUS_INTERNAL_ERROR;
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}
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ptoken->num_sids = 4;
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if (is_authenticated) {
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if (!dom_sid_parse(SID_NT_AUTHENTICATED_USERS, &ptoken->sids[4])) {
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return NT_STATUS_INTERNAL_ERROR;
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}
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ptoken->num_sids++;
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}
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for (i = 0; i < n_groupSIDs; i++) {
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size_t check_sid_idx;
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for (check_sid_idx = 1;
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check_sid_idx < ptoken->num_sids;
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check_sid_idx++) {
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if (dom_sid_equal(&ptoken->sids[check_sid_idx], groupSIDs[i])) {
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break;
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}
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}
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if (check_sid_idx == ptoken->num_sids) {
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ptoken->sids[ptoken->num_sids++] = *groupSIDs[i];
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}
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}
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*token = ptoken;
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/* Shortcuts to prevent recursion and avoid lookups */
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if (ptoken->sids == NULL) {
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ptoken->privilege_mask = 0;
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return NT_STATUS_OK;
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}
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if (security_token_is_system(ptoken)) {
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ptoken->privilege_mask = ~0;
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} else if (security_token_is_anonymous(ptoken)) {
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ptoken->privilege_mask = 0;
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} else if (security_token_has_builtin_administrators(ptoken)) {
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ptoken->privilege_mask = ~0;
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} else {
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/* All other 'users' get a empty priv set so far */
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ptoken->privilege_mask = 0;
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}
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return NT_STATUS_OK;
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}
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NTSTATUS auth_generate_simple_session_info(TALLOC_CTX *mem_ctx,
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struct auth_serversupplied_info *server_info,
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struct auth_session_info **_session_info)
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{
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struct auth_session_info *session_info;
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NTSTATUS nt_status;
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session_info = talloc(mem_ctx, struct auth_session_info);
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NT_STATUS_HAVE_NO_MEMORY(session_info);
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session_info->server_info = talloc_reference(session_info, server_info);
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/* unless set otherwise, the session key is the user session
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* key from the auth subsystem */
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session_info->session_key = server_info->user_session_key;
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nt_status = create_token(session_info,
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server_info->account_sid,
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server_info->primary_group_sid,
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server_info->n_domain_groups,
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server_info->domain_groups,
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server_info->authenticated,
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&session_info->security_token);
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NT_STATUS_NOT_OK_RETURN(nt_status);
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session_info->credentials = NULL;
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*_session_info = session_info;
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return NT_STATUS_OK;
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}
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/*
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prevent the static system session being freed
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*/
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static int system_session_destructor(struct auth_session_info *info)
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{
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return -1;
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}
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/* Create a security token for a session SYSTEM (the most
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* trusted/prvilaged account), including the local machine account as
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* the off-host credentials
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*/
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_PUBLIC_ struct auth_session_info *system_session(struct loadparm_context *lp_ctx)
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{
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static struct auth_session_info *static_session;
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NTSTATUS nt_status;
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if (static_session) {
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return static_session;
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}
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nt_status = auth_system_session_info(talloc_autofree_context(),
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lp_ctx,
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&static_session);
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if (!NT_STATUS_IS_OK(nt_status)) {
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talloc_free(static_session);
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static_session = NULL;
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return NULL;
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}
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talloc_set_destructor(static_session, system_session_destructor);
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return static_session;
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}
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NTSTATUS auth_system_session_info(TALLOC_CTX *parent_ctx,
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struct loadparm_context *lp_ctx,
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struct auth_session_info **_session_info)
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{
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NTSTATUS nt_status;
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struct auth_serversupplied_info *server_info = NULL;
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struct auth_session_info *session_info = NULL;
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TALLOC_CTX *mem_ctx = talloc_new(parent_ctx);
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nt_status = auth_system_server_info(mem_ctx, lpcfg_netbios_name(lp_ctx),
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&server_info);
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if (!NT_STATUS_IS_OK(nt_status)) {
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talloc_free(mem_ctx);
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return nt_status;
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}
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/* references the server_info into the session_info */
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nt_status = auth_generate_session_info(parent_ctx, NULL, server_info, 0, &session_info);
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talloc_free(mem_ctx);
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NT_STATUS_NOT_OK_RETURN(nt_status);
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session_info->credentials = cli_credentials_init(session_info);
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if (!session_info->credentials) {
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return NT_STATUS_NO_MEMORY;
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}
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cli_credentials_set_conf(session_info->credentials, lp_ctx);
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cli_credentials_set_machine_account_pending(session_info->credentials, lp_ctx);
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*_session_info = session_info;
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return NT_STATUS_OK;
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}
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NTSTATUS auth_system_server_info(TALLOC_CTX *mem_ctx, const char *netbios_name,
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struct auth_serversupplied_info **_server_info)
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{
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struct auth_serversupplied_info *server_info;
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server_info = talloc(mem_ctx, struct auth_serversupplied_info);
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NT_STATUS_HAVE_NO_MEMORY(server_info);
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server_info->account_sid = dom_sid_parse_talloc(server_info, SID_NT_SYSTEM);
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NT_STATUS_HAVE_NO_MEMORY(server_info->account_sid);
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/* is this correct? */
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server_info->primary_group_sid = dom_sid_parse_talloc(server_info, SID_BUILTIN_ADMINISTRATORS);
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NT_STATUS_HAVE_NO_MEMORY(server_info->primary_group_sid);
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server_info->n_domain_groups = 0;
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server_info->domain_groups = NULL;
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/* annoying, but the Anonymous really does have a session key,
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and it is all zeros! */
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server_info->user_session_key = data_blob_talloc(server_info, NULL, 16);
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NT_STATUS_HAVE_NO_MEMORY(server_info->user_session_key.data);
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server_info->lm_session_key = data_blob_talloc(server_info, NULL, 16);
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NT_STATUS_HAVE_NO_MEMORY(server_info->lm_session_key.data);
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data_blob_clear(&server_info->user_session_key);
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data_blob_clear(&server_info->lm_session_key);
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server_info->account_name = talloc_strdup(server_info, "SYSTEM");
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NT_STATUS_HAVE_NO_MEMORY(server_info->account_name);
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server_info->domain_name = talloc_strdup(server_info, "NT AUTHORITY");
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NT_STATUS_HAVE_NO_MEMORY(server_info->domain_name);
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server_info->full_name = talloc_strdup(server_info, "System");
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NT_STATUS_HAVE_NO_MEMORY(server_info->full_name);
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server_info->logon_script = talloc_strdup(server_info, "");
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NT_STATUS_HAVE_NO_MEMORY(server_info->logon_script);
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server_info->profile_path = talloc_strdup(server_info, "");
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NT_STATUS_HAVE_NO_MEMORY(server_info->profile_path);
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server_info->home_directory = talloc_strdup(server_info, "");
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NT_STATUS_HAVE_NO_MEMORY(server_info->home_directory);
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server_info->home_drive = talloc_strdup(server_info, "");
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NT_STATUS_HAVE_NO_MEMORY(server_info->home_drive);
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server_info->logon_server = talloc_strdup(server_info, netbios_name);
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NT_STATUS_HAVE_NO_MEMORY(server_info->logon_server);
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server_info->last_logon = 0;
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server_info->last_logoff = 0;
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server_info->acct_expiry = 0;
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server_info->last_password_change = 0;
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server_info->allow_password_change = 0;
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server_info->force_password_change = 0;
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server_info->logon_count = 0;
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server_info->bad_password_count = 0;
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server_info->acct_flags = ACB_NORMAL;
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server_info->authenticated = true;
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*_server_info = server_info;
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return NT_STATUS_OK;
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}
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static NTSTATUS auth_domain_admin_server_info(TALLOC_CTX *mem_ctx,
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const char *netbios_name,
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const char *domain_name,
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struct dom_sid *domain_sid,
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struct auth_serversupplied_info **_server_info)
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{
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struct auth_serversupplied_info *server_info;
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server_info = talloc(mem_ctx, struct auth_serversupplied_info);
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NT_STATUS_HAVE_NO_MEMORY(server_info);
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server_info->account_sid = dom_sid_add_rid(server_info, domain_sid, DOMAIN_RID_ADMINISTRATOR);
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NT_STATUS_HAVE_NO_MEMORY(server_info->account_sid);
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server_info->primary_group_sid = dom_sid_add_rid(server_info, domain_sid, DOMAIN_RID_USERS);
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NT_STATUS_HAVE_NO_MEMORY(server_info->primary_group_sid);
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server_info->n_domain_groups = 6;
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server_info->domain_groups = talloc_array(server_info, struct dom_sid *, server_info->n_domain_groups);
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server_info->domain_groups[0] = dom_sid_parse_talloc(server_info, SID_BUILTIN_ADMINISTRATORS);
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server_info->domain_groups[1] = dom_sid_add_rid(server_info, domain_sid, DOMAIN_RID_ADMINS);
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server_info->domain_groups[2] = dom_sid_add_rid(server_info, domain_sid, DOMAIN_RID_USERS);
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server_info->domain_groups[3] = dom_sid_add_rid(server_info, domain_sid, DOMAIN_RID_ENTERPRISE_ADMINS);
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server_info->domain_groups[4] = dom_sid_add_rid(server_info, domain_sid, DOMAIN_RID_POLICY_ADMINS);
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server_info->domain_groups[5] = dom_sid_add_rid(server_info, domain_sid, DOMAIN_RID_SCHEMA_ADMINS);
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/* What should the session key be?*/
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server_info->user_session_key = data_blob_talloc(server_info, NULL, 16);
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NT_STATUS_HAVE_NO_MEMORY(server_info->user_session_key.data);
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server_info->lm_session_key = data_blob_talloc(server_info, NULL, 16);
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NT_STATUS_HAVE_NO_MEMORY(server_info->lm_session_key.data);
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data_blob_clear(&server_info->user_session_key);
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data_blob_clear(&server_info->lm_session_key);
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server_info->account_name = talloc_strdup(server_info, "Administrator");
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NT_STATUS_HAVE_NO_MEMORY(server_info->account_name);
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server_info->domain_name = talloc_strdup(server_info, domain_name);
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NT_STATUS_HAVE_NO_MEMORY(server_info->domain_name);
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server_info->full_name = talloc_strdup(server_info, "Administrator");
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NT_STATUS_HAVE_NO_MEMORY(server_info->full_name);
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server_info->logon_script = talloc_strdup(server_info, "");
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NT_STATUS_HAVE_NO_MEMORY(server_info->logon_script);
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server_info->profile_path = talloc_strdup(server_info, "");
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NT_STATUS_HAVE_NO_MEMORY(server_info->profile_path);
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server_info->home_directory = talloc_strdup(server_info, "");
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NT_STATUS_HAVE_NO_MEMORY(server_info->home_directory);
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server_info->home_drive = talloc_strdup(server_info, "");
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NT_STATUS_HAVE_NO_MEMORY(server_info->home_drive);
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server_info->logon_server = talloc_strdup(server_info, netbios_name);
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NT_STATUS_HAVE_NO_MEMORY(server_info->logon_server);
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server_info->last_logon = 0;
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server_info->last_logoff = 0;
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server_info->acct_expiry = 0;
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server_info->last_password_change = 0;
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server_info->allow_password_change = 0;
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server_info->force_password_change = 0;
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server_info->logon_count = 0;
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server_info->bad_password_count = 0;
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server_info->acct_flags = ACB_NORMAL;
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server_info->authenticated = true;
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*_server_info = server_info;
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return NT_STATUS_OK;
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}
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static NTSTATUS auth_domain_admin_session_info(TALLOC_CTX *parent_ctx,
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struct loadparm_context *lp_ctx,
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struct dom_sid *domain_sid,
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struct auth_session_info **_session_info)
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{
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NTSTATUS nt_status;
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struct auth_serversupplied_info *server_info = NULL;
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struct auth_session_info *session_info = NULL;
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TALLOC_CTX *mem_ctx = talloc_new(parent_ctx);
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nt_status = auth_domain_admin_server_info(mem_ctx, lpcfg_netbios_name(lp_ctx),
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lpcfg_workgroup(lp_ctx), domain_sid,
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&server_info);
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if (!NT_STATUS_IS_OK(nt_status)) {
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talloc_free(mem_ctx);
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return nt_status;
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}
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session_info = talloc(mem_ctx, struct auth_session_info);
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NT_STATUS_HAVE_NO_MEMORY(session_info);
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session_info->server_info = talloc_reference(session_info, server_info);
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/* unless set otherwise, the session key is the user session
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* key from the auth subsystem */
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session_info->session_key = server_info->user_session_key;
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nt_status = create_token(session_info,
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server_info->account_sid,
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server_info->primary_group_sid,
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server_info->n_domain_groups,
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server_info->domain_groups,
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true,
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&session_info->security_token);
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NT_STATUS_NOT_OK_RETURN(nt_status);
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session_info->credentials = cli_credentials_init(session_info);
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if (!session_info->credentials) {
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return NT_STATUS_NO_MEMORY;
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}
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cli_credentials_set_conf(session_info->credentials, lp_ctx);
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*_session_info = session_info;
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return NT_STATUS_OK;
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}
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_PUBLIC_ struct auth_session_info *admin_session(TALLOC_CTX *mem_ctx, struct loadparm_context *lp_ctx, struct dom_sid *domain_sid)
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{
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NTSTATUS nt_status;
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struct auth_session_info *session_info = NULL;
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nt_status = auth_domain_admin_session_info(mem_ctx,
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lp_ctx,
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domain_sid,
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&session_info);
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if (!NT_STATUS_IS_OK(nt_status)) {
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return NULL;
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}
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return session_info;
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}
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_PUBLIC_ NTSTATUS auth_anonymous_session_info(TALLOC_CTX *parent_ctx,
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struct loadparm_context *lp_ctx,
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struct auth_session_info **_session_info)
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{
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NTSTATUS nt_status;
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struct auth_serversupplied_info *server_info = NULL;
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struct auth_session_info *session_info = NULL;
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TALLOC_CTX *mem_ctx = talloc_new(parent_ctx);
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nt_status = auth_anonymous_server_info(mem_ctx,
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lpcfg_netbios_name(lp_ctx),
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&server_info);
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if (!NT_STATUS_IS_OK(nt_status)) {
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talloc_free(mem_ctx);
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return nt_status;
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}
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/* references the server_info into the session_info */
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nt_status = auth_generate_session_info(parent_ctx, NULL, server_info, 0, &session_info);
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talloc_free(mem_ctx);
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NT_STATUS_NOT_OK_RETURN(nt_status);
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session_info->credentials = cli_credentials_init(session_info);
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if (!session_info->credentials) {
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return NT_STATUS_NO_MEMORY;
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}
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cli_credentials_set_conf(session_info->credentials, lp_ctx);
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cli_credentials_set_anonymous(session_info->credentials);
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*_session_info = session_info;
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return NT_STATUS_OK;
|
|
}
|
|
|
|
_PUBLIC_ NTSTATUS auth_anonymous_server_info(TALLOC_CTX *mem_ctx,
|
|
const char *netbios_name,
|
|
struct auth_serversupplied_info **_server_info)
|
|
{
|
|
struct auth_serversupplied_info *server_info;
|
|
server_info = talloc(mem_ctx, struct auth_serversupplied_info);
|
|
NT_STATUS_HAVE_NO_MEMORY(server_info);
|
|
|
|
server_info->account_sid = dom_sid_parse_talloc(server_info, SID_NT_ANONYMOUS);
|
|
NT_STATUS_HAVE_NO_MEMORY(server_info->account_sid);
|
|
|
|
/* The anonymous user has only one SID in it's token, but we need to fill something in here */
|
|
server_info->primary_group_sid = dom_sid_parse_talloc(server_info, SID_NT_ANONYMOUS);
|
|
NT_STATUS_HAVE_NO_MEMORY(server_info->primary_group_sid);
|
|
|
|
server_info->n_domain_groups = 0;
|
|
server_info->domain_groups = NULL;
|
|
|
|
/* annoying, but the Anonymous really does have a session key... */
|
|
server_info->user_session_key = data_blob_talloc(server_info, NULL, 16);
|
|
NT_STATUS_HAVE_NO_MEMORY(server_info->user_session_key.data);
|
|
|
|
server_info->lm_session_key = data_blob_talloc(server_info, NULL, 16);
|
|
NT_STATUS_HAVE_NO_MEMORY(server_info->lm_session_key.data);
|
|
|
|
/* and it is all zeros! */
|
|
data_blob_clear(&server_info->user_session_key);
|
|
data_blob_clear(&server_info->lm_session_key);
|
|
|
|
server_info->account_name = talloc_strdup(server_info, "ANONYMOUS LOGON");
|
|
NT_STATUS_HAVE_NO_MEMORY(server_info->account_name);
|
|
|
|
server_info->domain_name = talloc_strdup(server_info, "NT AUTHORITY");
|
|
NT_STATUS_HAVE_NO_MEMORY(server_info->domain_name);
|
|
|
|
server_info->full_name = talloc_strdup(server_info, "Anonymous Logon");
|
|
NT_STATUS_HAVE_NO_MEMORY(server_info->full_name);
|
|
|
|
server_info->logon_script = talloc_strdup(server_info, "");
|
|
NT_STATUS_HAVE_NO_MEMORY(server_info->logon_script);
|
|
|
|
server_info->profile_path = talloc_strdup(server_info, "");
|
|
NT_STATUS_HAVE_NO_MEMORY(server_info->profile_path);
|
|
|
|
server_info->home_directory = talloc_strdup(server_info, "");
|
|
NT_STATUS_HAVE_NO_MEMORY(server_info->home_directory);
|
|
|
|
server_info->home_drive = talloc_strdup(server_info, "");
|
|
NT_STATUS_HAVE_NO_MEMORY(server_info->home_drive);
|
|
|
|
server_info->logon_server = talloc_strdup(server_info, netbios_name);
|
|
NT_STATUS_HAVE_NO_MEMORY(server_info->logon_server);
|
|
|
|
server_info->last_logon = 0;
|
|
server_info->last_logoff = 0;
|
|
server_info->acct_expiry = 0;
|
|
server_info->last_password_change = 0;
|
|
server_info->allow_password_change = 0;
|
|
server_info->force_password_change = 0;
|
|
|
|
server_info->logon_count = 0;
|
|
server_info->bad_password_count = 0;
|
|
|
|
server_info->acct_flags = ACB_NORMAL;
|
|
|
|
server_info->authenticated = false;
|
|
|
|
*_server_info = server_info;
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|