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/*
Unix SMB/CIFS implementation.
Convert a server info struct into the form for PAC and NETLOGON replies
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004
Copyright (C) Stefan Metzmacher <metze@samba.org> 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 "auth/auth.h"
#include "libcli/security/security.h"
#include "auth/auth_sam_reply.h"
NTSTATUS auth_convert_server_info_sambaseinfo(TALLOC_CTX *mem_ctx,
struct auth_serversupplied_info *server_info,
struct netr_SamBaseInfo **_sam)
{
NTSTATUS status;
struct netr_SamBaseInfo *sam = talloc_zero(mem_ctx, struct netr_SamBaseInfo);
NT_STATUS_HAVE_NO_MEMORY(sam);
if (server_info->num_sids > PRIMARY_USER_SID_INDEX) {
status = dom_sid_split_rid(sam, &server_info->sids[PRIMARY_USER_SID_INDEX],
&sam->domain_sid, &sam->rid);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
} else {
return NT_STATUS_INVALID_PARAMETER;
}
if (server_info->num_sids > PRIMARY_GROUP_SID_INDEX) {
status = dom_sid_split_rid(NULL, &server_info->sids[PRIMARY_GROUP_SID_INDEX],
NULL, &sam->primary_gid);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
} else {
/* if we have to encode something like SYSTEM (with no
* second SID in the token) then this is the only
* choice */
sam->primary_gid = sam->rid;
}
sam->last_logon = server_info->last_logon;
sam->last_logoff = server_info->last_logoff;
sam->acct_expiry = server_info->acct_expiry;
sam->last_password_change = server_info->last_password_change;
sam->allow_password_change = server_info->allow_password_change;
sam->force_password_change = server_info->force_password_change;
sam->account_name.string = server_info->account_name;
sam->full_name.string = server_info->full_name;
sam->logon_script.string = server_info->logon_script;
sam->profile_path.string = server_info->profile_path;
sam->home_directory.string = server_info->home_directory;
sam->home_drive.string = server_info->home_drive;
sam->logon_count = server_info->logon_count;
sam->bad_password_count = sam->bad_password_count;
sam->groups.count = 0;
sam->groups.rids = NULL;
if (server_info->num_sids > 2) {
size_t i;
sam->groups.rids = talloc_array(sam, struct samr_RidWithAttribute,
server_info->num_sids);
if (sam->groups.rids == NULL)
return NT_STATUS_NO_MEMORY;
for (i=2; i<server_info->num_sids; i++) {
struct dom_sid *group_sid = &server_info->sids[i];
if (!dom_sid_in_domain(sam->domain_sid, group_sid)) {
/* We handle this elsewhere */
continue;
}
sam->groups.rids[sam->groups.count].rid =
group_sid->sub_auths[group_sid->num_auths-1];
sam->groups.rids[sam->groups.count].attributes =
SE_GROUP_MANDATORY | SE_GROUP_ENABLED_BY_DEFAULT | SE_GROUP_ENABLED;
sam->groups.count += 1;
}
}
sam->user_flags = 0; /* w2k3 uses NETLOGON_EXTRA_SIDS | NETLOGON_NTLMV2_ENABLED */
sam->acct_flags = server_info->acct_flags;
sam->logon_server.string = server_info->logon_server;
sam->domain.string = server_info->domain_name;
ZERO_STRUCT(sam->unknown);
ZERO_STRUCT(sam->key);
if (server_info->user_session_key.length == sizeof(sam->key.key)) {
memcpy(sam->key.key, server_info->user_session_key.data, sizeof(sam->key.key));
}
ZERO_STRUCT(sam->LMSessKey);
if (server_info->lm_session_key.length == sizeof(sam->LMSessKey.key)) {
memcpy(sam->LMSessKey.key, server_info->lm_session_key.data,
sizeof(sam->LMSessKey.key));
}
*_sam = sam;
return NT_STATUS_OK;
}
/* Note that the validity of the _sam3 structure is only as long as
* the server_info it was generated from */
NTSTATUS auth_convert_server_info_saminfo3(TALLOC_CTX *mem_ctx,
struct auth_serversupplied_info *server_info,
struct netr_SamInfo3 **_sam3)
{
struct netr_SamBaseInfo *sam;
struct netr_SamInfo3 *sam3 = talloc_zero(mem_ctx, struct netr_SamInfo3);
NTSTATUS status;
size_t i;
NT_STATUS_HAVE_NO_MEMORY(sam3);
status = auth_convert_server_info_sambaseinfo(sam3, server_info, &sam);
if (!NT_STATUS_IS_OK(status)) {
talloc_free(sam3);
return status;
}
sam3->base = *sam;
sam3->sidcount = 0;
sam3->sids = NULL;
sam3->sids = talloc_array(sam, struct netr_SidAttr,
server_info->num_sids);
NT_STATUS_HAVE_NO_MEMORY_AND_FREE(sam3->sids, sam3);
/* We don't put the user and group SIDs in there */
for (i=2; i<server_info->num_sids; i++) {
if (dom_sid_in_domain(sam->domain_sid, &server_info->sids[i])) {
continue;
}
sam3->sids[sam3->sidcount].sid = dom_sid_dup(sam3->sids, &server_info->sids[i]);
NT_STATUS_HAVE_NO_MEMORY_AND_FREE(sam3->sids[sam3->sidcount].sid, sam3);
sam3->sids[sam3->sidcount].attributes =
SE_GROUP_MANDATORY | SE_GROUP_ENABLED_BY_DEFAULT | SE_GROUP_ENABLED;
sam3->sidcount += 1;
}
if (sam3->sidcount) {
sam3->base.user_flags |= NETLOGON_EXTRA_SIDS;
} else {
sam3->sids = NULL;
}
*_sam3 = sam3;
return NT_STATUS_OK;
}
/**
* Make a server_info struct from the info3 returned by a domain logon
*/
NTSTATUS make_server_info_netlogon_validation(TALLOC_CTX *mem_ctx,
const char *account_name,
uint16_t validation_level,
union netr_Validation *validation,
struct auth_serversupplied_info **_server_info)
{
struct auth_serversupplied_info *server_info;
struct netr_SamBaseInfo *base = NULL;
uint32_t i;
switch (validation_level) {
case 2:
if (!validation || !validation->sam2) {
return NT_STATUS_INVALID_PARAMETER;
}
base = &validation->sam2->base;
break;
case 3:
if (!validation || !validation->sam3) {
return NT_STATUS_INVALID_PARAMETER;
}
base = &validation->sam3->base;
break;
case 6:
if (!validation || !validation->sam6) {
return NT_STATUS_INVALID_PARAMETER;
}
base = &validation->sam6->base;
break;
default:
return NT_STATUS_INVALID_LEVEL;
}
server_info = talloc(mem_ctx, struct auth_serversupplied_info);
NT_STATUS_HAVE_NO_MEMORY(server_info);
/*
Here is where we should check the list of
trusted domains, and verify that the SID
matches.
*/
if (!base->domain_sid) {
DEBUG(0, ("Cannot operate on a Netlogon Validation without a domain SID"));
return NT_STATUS_INVALID_PARAMETER;
}
/* The IDL layer would be a better place to check this, but to
* guard the integer addition below, we double-check */
if (base->groups.count > 65535) {
return NT_STATUS_INVALID_PARAMETER;
}
server_info->num_sids = 2;
server_info->sids = talloc_array(server_info, struct dom_sid, server_info->num_sids + base->groups.count);
NT_STATUS_HAVE_NO_MEMORY(server_info->sids);
server_info->sids[PRIMARY_USER_SID_INDEX] = *base->domain_sid;
if (!sid_append_rid(&server_info->sids[PRIMARY_USER_SID_INDEX], base->rid)) {
return NT_STATUS_INVALID_PARAMETER;
}
server_info->sids[PRIMARY_GROUP_SID_INDEX] = *base->domain_sid;
if (!sid_append_rid(&server_info->sids[PRIMARY_GROUP_SID_INDEX], base->primary_gid)) {
return NT_STATUS_INVALID_PARAMETER;
}
for (i = 0; i < base->groups.count; i++) {
server_info->sids[server_info->num_sids] = *base->domain_sid;
if (!sid_append_rid(&server_info->sids[server_info->num_sids], base->groups.rids[i].rid)) {
return NT_STATUS_INVALID_PARAMETER;
}
server_info->num_sids++;
}
/* Copy 'other' sids. We need to do sid filtering here to
prevent possible elevation of privileges. See:
http://www.microsoft.com/windows2000/techinfo/administration/security/sidfilter.asp
*/
if (validation_level == 3) {
struct dom_sid *dgrps = server_info->sids;
size_t sidcount;
/* The IDL layer would be a better place to check this, but to
* guard the integer addition below, we double-check */
if (validation->sam3->sidcount > 65535) {
return NT_STATUS_INVALID_PARAMETER;
}
sidcount = server_info->num_sids + validation->sam3->sidcount;
if (validation->sam3->sidcount > 0) {
dgrps = talloc_realloc(server_info, dgrps, struct dom_sid, sidcount);
NT_STATUS_HAVE_NO_MEMORY(dgrps);
for (i = 0; i < validation->sam3->sidcount; i++) {
if (validation->sam3->sids[i].sid) {
dgrps[server_info->num_sids] = *validation->sam3->sids[i].sid;
server_info->num_sids++;
}
}
}
server_info->sids = dgrps;
/* Where are the 'global' sids?... */
}
if (base->account_name.string) {
server_info->account_name = talloc_reference(server_info, base->account_name.string);
} else {
server_info->account_name = talloc_strdup(server_info, account_name);
NT_STATUS_HAVE_NO_MEMORY(server_info->account_name);
}
server_info->domain_name = talloc_reference(server_info, base->domain.string);
server_info->full_name = talloc_reference(server_info, base->full_name.string);
server_info->logon_script = talloc_reference(server_info, base->logon_script.string);
server_info->profile_path = talloc_reference(server_info, base->profile_path.string);
server_info->home_directory = talloc_reference(server_info, base->home_directory.string);
server_info->home_drive = talloc_reference(server_info, base->home_drive.string);
server_info->logon_server = talloc_reference(server_info, base->logon_server.string);
server_info->last_logon = base->last_logon;
server_info->last_logoff = base->last_logoff;
server_info->acct_expiry = base->acct_expiry;
server_info->last_password_change = base->last_password_change;
server_info->allow_password_change = base->allow_password_change;
server_info->force_password_change = base->force_password_change;
server_info->logon_count = base->logon_count;
server_info->bad_password_count = base->bad_password_count;
server_info->acct_flags = base->acct_flags;
server_info->authenticated = true;
/* ensure we are never given NULL session keys */
if (all_zero(base->key.key, sizeof(base->key.key))) {
server_info->user_session_key = data_blob(NULL, 0);
} else {
server_info->user_session_key = data_blob_talloc(server_info, base->key.key, sizeof(base->key.key));
NT_STATUS_HAVE_NO_MEMORY(server_info->user_session_key.data);
}
if (all_zero(base->LMSessKey.key, sizeof(base->LMSessKey.key))) {
server_info->lm_session_key = data_blob(NULL, 0);
} else {
server_info->lm_session_key = data_blob_talloc(server_info, base->LMSessKey.key, sizeof(base->LMSessKey.key));
NT_STATUS_HAVE_NO_MEMORY(server_info->lm_session_key.data);
}
ZERO_STRUCT(server_info->pac_srv_sig);
ZERO_STRUCT(server_info->pac_kdc_sig);
*_server_info = server_info;
return NT_STATUS_OK;
}
/**
* Make a server_info struct from the PAC_LOGON_INFO supplied in the krb5 logon
*/
NTSTATUS make_server_info_pac(TALLOC_CTX *mem_ctx,
struct PAC_LOGON_INFO *pac_logon_info,
struct auth_serversupplied_info **_server_info)
{
uint32_t i;
NTSTATUS nt_status;
union netr_Validation validation;
struct auth_serversupplied_info *server_info;
validation.sam3 = &pac_logon_info->info3;
nt_status = make_server_info_netlogon_validation(mem_ctx, "", 3, &validation, &server_info);
if (!NT_STATUS_IS_OK(nt_status)) {
return nt_status;
}
if (pac_logon_info->res_groups.count > 0) {
size_t sidcount;
/* The IDL layer would be a better place to check this, but to
* guard the integer addition below, we double-check */
if (pac_logon_info->res_groups.count > 65535) {
talloc_free(server_info);
return NT_STATUS_INVALID_PARAMETER;
}
/*
Here is where we should check the list of
trusted domains, and verify that the SID
matches.
*/
if (!pac_logon_info->res_group_dom_sid) {
DEBUG(0, ("Cannot operate on a PAC without a resource domain SID"));
return NT_STATUS_INVALID_PARAMETER;
}
sidcount = server_info->num_sids + pac_logon_info->res_groups.count;
server_info->sids
= talloc_realloc(server_info, server_info->sids, struct dom_sid, sidcount);
NT_STATUS_HAVE_NO_MEMORY_AND_FREE(server_info->sids, server_info);
for (i = 0; pac_logon_info->res_group_dom_sid && i < pac_logon_info->res_groups.count; i++) {
server_info->sids[server_info->num_sids] = *pac_logon_info->res_group_dom_sid;
if (!sid_append_rid(&server_info->sids[server_info->num_sids],
pac_logon_info->res_groups.rids[i].rid)) {
return NT_STATUS_INVALID_PARAMETER;
}
server_info->num_sids++;
}
}
*_server_info = server_info;
return NT_STATUS_OK;
}
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