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Unix SMB/CIFS implementation.
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Authentication utility functions
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Copyright (C) Volker Lendecke 2010
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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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#include "../lib/crypto/arcfour.h"
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#include "../librpc/gen_ndr/netlogon.h"
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#include "../libcli/security/security.h"
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#include "rpc_client/util_netlogon.h"
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#include "nsswitch/libwbclient/wbclient.h"
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#define DBGC_CLASS DBGC_AUTH
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/* FIXME: do we really still need this ? */
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static int server_info_dtor(struct auth_serversupplied_info *server_info)
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TALLOC_FREE(server_info->info3);
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ZERO_STRUCTP(server_info);
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/***************************************************************************
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Make a server_info struct. Free with TALLOC_FREE().
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***************************************************************************/
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struct auth_serversupplied_info *make_server_info(TALLOC_CTX *mem_ctx)
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struct auth_serversupplied_info *result;
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result = TALLOC_ZERO_P(mem_ctx, struct auth_serversupplied_info);
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DEBUG(0, ("talloc failed\n"));
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talloc_set_destructor(result, server_info_dtor);
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/* Initialise the uid and gid values to something non-zero
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which may save us from giving away root access if there
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is a bug in allocating these fields. */
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result->utok.uid = -1;
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result->utok.gid = -1;
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/****************************************************************************
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inits a netr_SamInfo2 structure from an auth_serversupplied_info. sam2 must
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already be initialized and is used as the talloc parent for its members.
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*****************************************************************************/
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NTSTATUS serverinfo_to_SamInfo2(struct auth_serversupplied_info *server_info,
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uint8_t *pipe_session_key,
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size_t pipe_session_key_len,
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struct netr_SamInfo2 *sam2)
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struct netr_SamInfo3 *info3;
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info3 = copy_netr_SamInfo3(sam2, server_info->info3);
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return NT_STATUS_NO_MEMORY;
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if (server_info->user_session_key.length) {
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memcpy(info3->base.key.key,
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server_info->user_session_key.data,
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MIN(sizeof(info3->base.key.key),
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server_info->user_session_key.length));
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if (pipe_session_key) {
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arcfour_crypt(info3->base.key.key,
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pipe_session_key, 16);
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if (server_info->lm_session_key.length) {
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memcpy(info3->base.LMSessKey.key,
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server_info->lm_session_key.data,
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MIN(sizeof(info3->base.LMSessKey.key),
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server_info->lm_session_key.length));
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if (pipe_session_key) {
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arcfour_crypt(info3->base.LMSessKey.key,
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pipe_session_key, 8);
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sam2->base = info3->base;
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/****************************************************************************
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inits a netr_SamInfo3 structure from an auth_serversupplied_info. sam3 must
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already be initialized and is used as the talloc parent for its members.
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*****************************************************************************/
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NTSTATUS serverinfo_to_SamInfo3(const struct auth_serversupplied_info *server_info,
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uint8_t *pipe_session_key,
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size_t pipe_session_key_len,
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struct netr_SamInfo3 *sam3)
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struct netr_SamInfo3 *info3;
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info3 = copy_netr_SamInfo3(sam3, server_info->info3);
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return NT_STATUS_NO_MEMORY;
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if (server_info->user_session_key.length) {
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memcpy(info3->base.key.key,
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server_info->user_session_key.data,
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MIN(sizeof(info3->base.key.key),
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server_info->user_session_key.length));
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if (pipe_session_key) {
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arcfour_crypt(info3->base.key.key,
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pipe_session_key, 16);
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if (server_info->lm_session_key.length) {
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memcpy(info3->base.LMSessKey.key,
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server_info->lm_session_key.data,
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MIN(sizeof(info3->base.LMSessKey.key),
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server_info->lm_session_key.length));
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if (pipe_session_key) {
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arcfour_crypt(info3->base.LMSessKey.key,
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pipe_session_key, 8);
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sam3->base = info3->base;
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/****************************************************************************
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inits a netr_SamInfo6 structure from an auth_serversupplied_info. sam6 must
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already be initialized and is used as the talloc parent for its members.
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*****************************************************************************/
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NTSTATUS serverinfo_to_SamInfo6(struct auth_serversupplied_info *server_info,
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uint8_t *pipe_session_key,
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size_t pipe_session_key_len,
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struct netr_SamInfo6 *sam6)
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struct pdb_domain_info *dominfo;
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struct netr_SamInfo3 *info3;
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if ((pdb_capabilities() & PDB_CAP_ADS) == 0) {
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DEBUG(10,("Not adding validation info level 6 "
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"without ADS passdb backend\n"));
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return NT_STATUS_INVALID_INFO_CLASS;
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dominfo = pdb_get_domain_info(sam6);
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if (dominfo == NULL) {
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return NT_STATUS_NO_MEMORY;
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info3 = copy_netr_SamInfo3(sam6, server_info->info3);
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return NT_STATUS_NO_MEMORY;
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if (server_info->user_session_key.length) {
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memcpy(info3->base.key.key,
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server_info->user_session_key.data,
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MIN(sizeof(info3->base.key.key),
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server_info->user_session_key.length));
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if (pipe_session_key) {
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arcfour_crypt(info3->base.key.key,
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pipe_session_key, 16);
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if (server_info->lm_session_key.length) {
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memcpy(info3->base.LMSessKey.key,
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server_info->lm_session_key.data,
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MIN(sizeof(info3->base.LMSessKey.key),
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server_info->lm_session_key.length));
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if (pipe_session_key) {
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arcfour_crypt(info3->base.LMSessKey.key,
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pipe_session_key, 8);
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sam6->base = info3->base;
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sam6->dns_domainname.string = talloc_strdup(sam6, dominfo->dns_domain);
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if (sam6->dns_domainname.string == NULL) {
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return NT_STATUS_NO_MEMORY;
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sam6->principle.string = talloc_asprintf(sam6, "%s@%s",
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sam6->base.account_name.string,
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sam6->dns_domainname.string);
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if (sam6->principle.string == NULL) {
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return NT_STATUS_NO_MEMORY;
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static NTSTATUS append_netr_SidAttr(TALLOC_CTX *mem_ctx,
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struct netr_SidAttr **sids,
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const struct dom_sid2 *asid,
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*sids = talloc_realloc(mem_ctx, *sids, struct netr_SidAttr, t + 1);
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return NT_STATUS_NO_MEMORY;
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(*sids)[t].sid = dom_sid_dup(*sids, asid);
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if ((*sids)[t].sid == NULL) {
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return NT_STATUS_NO_MEMORY;
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(*sids)[t].attributes = attributes;
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/* Fills the samr_RidWithAttributeArray with the provided sids.
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* If it happens that we have additional groups that do not belong
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* to the domain, add their sids as extra sids */
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static NTSTATUS group_sids_to_info3(struct netr_SamInfo3 *info3,
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const struct dom_sid *sids,
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uint32_t attributes = SE_GROUP_MANDATORY |
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SE_GROUP_ENABLED_BY_DEFAULT |
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struct samr_RidWithAttributeArray *groups;
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struct dom_sid *domain_sid;
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domain_sid = info3->base.domain_sid;
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groups = &info3->base.groups;
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groups->rids = talloc_array(info3,
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struct samr_RidWithAttribute, num_sids);
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return NT_STATUS_NO_MEMORY;
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for (i = 0; i < num_sids; i++) {
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ok = sid_peek_check_rid(domain_sid, &sids[i], &rid);
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/* if it is the primary gid, skip it, we
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* obviously already have it */
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if (info3->base.primary_gid == rid) continue;
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/* store domain group rid */
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groups->rids[groups->count].rid = rid;
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groups->rids[groups->count].attributes = attributes;
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/* if this wasn't a domain sid, add it as extra sid */
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status = append_netr_SidAttr(info3, &info3->sids,
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&sids[i], attributes);
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if (!NT_STATUS_IS_OK(status)) {
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#define RET_NOMEM(ptr) do { \
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TALLOC_FREE(info3); \
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return NT_STATUS_NO_MEMORY; \
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NTSTATUS samu_to_SamInfo3(TALLOC_CTX *mem_ctx,
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const char *login_server,
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struct netr_SamInfo3 **_info3,
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struct extra_auth_info *extra)
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struct netr_SamInfo3 *info3;
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const struct dom_sid *user_sid;
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const struct dom_sid *group_sid;
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struct dom_sid domain_sid;
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struct dom_sid *group_sids;
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uint32_t num_group_sids = 0;
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user_sid = pdb_get_user_sid(samu);
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group_sid = pdb_get_group_sid(samu);
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if (!user_sid || !group_sid) {
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DEBUG(1, ("Sam account is missing sids!\n"));
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return NT_STATUS_UNSUCCESSFUL;
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info3 = talloc_zero(mem_ctx, struct netr_SamInfo3);
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return NT_STATUS_NO_MEMORY;
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ZERO_STRUCT(domain_sid);
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/* check if this is a "Unix Users" domain user,
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* we need to handle it in a special way if that's the case */
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if (sid_check_is_in_unix_users(user_sid)) {
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/* in info3 you can only set rids for the user and the
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* primary group, and the domain sid must be that of
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* Store a completely bogus value here.
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* The real SID is stored in the extra sids.
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* Other code will know to look there if (-1) is found
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info3->base.rid = (uint32_t)(-1);
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sid_copy(&extra->user_sid, user_sid);
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DEBUG(10, ("Unix User found in struct samu. Rid marked as "
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"special and sid (%s) saved as extra sid\n",
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sid_string_dbg(user_sid)));
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sid_copy(&domain_sid, user_sid);
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sid_split_rid(&domain_sid, &info3->base.rid);
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if (is_null_sid(&domain_sid)) {
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sid_copy(&domain_sid, get_global_sam_sid());
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/* check if this is a "Unix Groups" domain group,
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* if so we need special handling */
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if (sid_check_is_in_unix_groups(group_sid)) {
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/* in info3 you can only set rids for the user and the
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* primary group, and the domain sid must be that of
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* Store a completely bogus value here.
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* The real SID is stored in the extra sids.
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* Other code will know to look there if (-1) is found
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info3->base.primary_gid = (uint32_t)(-1);
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sid_copy(&extra->pgid_sid, group_sid);
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DEBUG(10, ("Unix Group found in struct samu. Rid marked as "
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"special and sid (%s) saved as extra sid\n",
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sid_string_dbg(group_sid)));
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ok = sid_peek_check_rid(&domain_sid, group_sid,
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&info3->base.primary_gid);
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DEBUG(1, ("The primary group domain sid(%s) does not "
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"match the domain sid(%s) for %s(%s)\n",
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sid_string_dbg(group_sid),
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sid_string_dbg(&domain_sid),
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pdb_get_username(samu),
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sid_string_dbg(user_sid)));
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return NT_STATUS_UNSUCCESSFUL;
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unix_to_nt_time(&info3->base.last_logon, pdb_get_logon_time(samu));
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unix_to_nt_time(&info3->base.last_logoff, get_time_t_max());
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unix_to_nt_time(&info3->base.acct_expiry, get_time_t_max());
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unix_to_nt_time(&info3->base.last_password_change,
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pdb_get_pass_last_set_time(samu));
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unix_to_nt_time(&info3->base.allow_password_change,
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pdb_get_pass_can_change_time(samu));
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unix_to_nt_time(&info3->base.force_password_change,
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pdb_get_pass_must_change_time(samu));
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tmp = pdb_get_username(samu);
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info3->base.account_name.string = talloc_strdup(info3, tmp);
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RET_NOMEM(info3->base.account_name.string);
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tmp = pdb_get_fullname(samu);
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info3->base.full_name.string = talloc_strdup(info3, tmp);
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RET_NOMEM(info3->base.full_name.string);
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tmp = pdb_get_logon_script(samu);
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info3->base.logon_script.string = talloc_strdup(info3, tmp);
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RET_NOMEM(info3->base.logon_script.string);
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tmp = pdb_get_profile_path(samu);
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info3->base.profile_path.string = talloc_strdup(info3, tmp);
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RET_NOMEM(info3->base.profile_path.string);
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tmp = pdb_get_homedir(samu);
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info3->base.home_directory.string = talloc_strdup(info3, tmp);
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RET_NOMEM(info3->base.home_directory.string);
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tmp = pdb_get_dir_drive(samu);
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info3->base.home_drive.string = talloc_strdup(info3, tmp);
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RET_NOMEM(info3->base.home_drive.string);
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info3->base.logon_count = pdb_get_logon_count(samu);
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info3->base.bad_password_count = pdb_get_bad_password_count(samu);
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info3->base.domain.string = talloc_strdup(info3,
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pdb_get_domain(samu));
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RET_NOMEM(info3->base.domain.string);
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info3->base.domain_sid = dom_sid_dup(info3, &domain_sid);
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RET_NOMEM(info3->base.domain_sid);
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status = pdb_enum_group_memberships(mem_ctx, samu,
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if (!NT_STATUS_IS_OK(status)) {
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DEBUG(1, ("Failed to get groups from sam account.\n"));
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if (num_group_sids) {
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status = group_sids_to_info3(info3, group_sids, num_group_sids);
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if (!NT_STATUS_IS_OK(status)) {
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/* We don't need sids and gids after the conversion */
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TALLOC_FREE(group_sids);
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/* FIXME: should we add other flags ? */
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info3->base.user_flags = NETLOGON_EXTRA_SIDS;
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info3->base.logon_server.string = talloc_strdup(info3, login_server);
475
RET_NOMEM(info3->base.logon_server.string);
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info3->base.acct_flags = pdb_get_acct_ctrl(samu);
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#define RET_NOMEM(ptr) do { \
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TALLOC_FREE(info3); \
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struct netr_SamInfo3 *copy_netr_SamInfo3(TALLOC_CTX *mem_ctx,
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struct netr_SamInfo3 *orig)
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struct netr_SamInfo3 *info3;
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info3 = talloc_zero(mem_ctx, struct netr_SamInfo3);
500
if (!info3) return NULL;
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status = copy_netr_SamBaseInfo(info3, &orig->base, &info3->base);
503
if (!NT_STATUS_IS_OK(status)) {
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if (orig->sidcount) {
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info3->sidcount = orig->sidcount;
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info3->sids = talloc_array(info3, struct netr_SidAttr,
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RET_NOMEM(info3->sids);
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for (i = 0; i < orig->sidcount; i++) {
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info3->sids[i].sid = dom_sid_dup(info3->sids,
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RET_NOMEM(info3->sids[i].sid);
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info3->sids[i].attributes =
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orig->sids[i].attributes;
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static NTSTATUS wbcsids_to_samr_RidWithAttributeArray(
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struct samr_RidWithAttributeArray *groups,
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const struct dom_sid *domain_sid,
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const struct wbcSidWithAttr *sids,
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groups->rids = talloc_array(mem_ctx,
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struct samr_RidWithAttribute, num_sids);
538
return NT_STATUS_NO_MEMORY;
541
/* a wbcDomainSid is the same as a dom_sid */
542
for (i = 0; i < num_sids; i++) {
543
ok = sid_peek_check_rid(domain_sid,
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(const struct dom_sid *)&sids[i].sid,
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&groups->rids[i].rid);
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groups->rids[i].attributes = SE_GROUP_MANDATORY |
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SE_GROUP_ENABLED_BY_DEFAULT |
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struct netr_SamInfo3 *wbcAuthUserInfo_to_netr_SamInfo3(TALLOC_CTX *mem_ctx,
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const struct wbcAuthUserInfo *info)
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struct netr_SamInfo3 *info3;
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struct dom_sid user_sid;
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struct dom_sid group_sid;
563
struct dom_sid domain_sid;
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memcpy(&user_sid, &info->sids[0].sid, sizeof(user_sid));
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memcpy(&group_sid, &info->sids[1].sid, sizeof(group_sid));
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info3 = talloc_zero(mem_ctx, struct netr_SamInfo3);
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if (!info3) return NULL;
573
info3->base.last_logon = info->logon_time;
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info3->base.last_logoff = info->logoff_time;
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info3->base.acct_expiry = info->kickoff_time;
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unix_to_nt_time(&info3->base.last_password_change, info->pass_last_set_time);
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unix_to_nt_time(&info3->base.allow_password_change,
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info->pass_can_change_time);
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unix_to_nt_time(&info3->base.force_password_change,
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info->pass_must_change_time);
582
if (info->account_name) {
583
info3->base.account_name.string =
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talloc_strdup(info3, info->account_name);
585
RET_NOMEM(info3->base.account_name.string);
587
if (info->full_name) {
588
info3->base.full_name.string =
589
talloc_strdup(info3, info->full_name);
590
RET_NOMEM(info3->base.full_name.string);
592
if (info->logon_script) {
593
info3->base.logon_script.string =
594
talloc_strdup(info3, info->logon_script);
595
RET_NOMEM(info3->base.logon_script.string);
597
if (info->profile_path) {
598
info3->base.profile_path.string =
599
talloc_strdup(info3, info->profile_path);
600
RET_NOMEM(info3->base.profile_path.string);
602
if (info->home_directory) {
603
info3->base.home_directory.string =
604
talloc_strdup(info3, info->home_directory);
605
RET_NOMEM(info3->base.home_directory.string);
607
if (info->home_drive) {
608
info3->base.home_drive.string =
609
talloc_strdup(info3, info->home_drive);
610
RET_NOMEM(info3->base.home_drive.string);
613
info3->base.logon_count = info->logon_count;
614
info3->base.bad_password_count = info->bad_password_count;
616
sid_copy(&domain_sid, &user_sid);
617
sid_split_rid(&domain_sid, &info3->base.rid);
619
ok = sid_peek_check_rid(&domain_sid, &group_sid,
620
&info3->base.primary_gid);
622
DEBUG(1, ("The primary group sid domain does not"
623
"match user sid domain for user: %s\n",
624
info->account_name));
629
status = wbcsids_to_samr_RidWithAttributeArray(info3,
634
if (!NT_STATUS_IS_OK(status)) {
639
info3->base.user_flags = info->user_flags;
640
memcpy(info3->base.key.key, info->user_session_key, 16);
642
if (info->logon_server) {
643
info3->base.logon_server.string =
644
talloc_strdup(info3, info->logon_server);
645
RET_NOMEM(info3->base.logon_server.string);
647
if (info->domain_name) {
648
info3->base.domain.string =
649
talloc_strdup(info3, info->domain_name);
650
RET_NOMEM(info3->base.domain.string);
653
info3->base.domain_sid = dom_sid_dup(info3, &domain_sid);
654
RET_NOMEM(info3->base.domain_sid);
656
memcpy(info3->base.LMSessKey.key, info->lm_session_key, 8);
657
info3->base.acct_flags = info->acct_flags;