wmi-1.3.16 from opsview.com
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/*
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Unix SMB/CIFS implementation.
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Do a netr_LogonSamLogon to a remote DC
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Copyright (C) Volker Lendecke 2005
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Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
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Copyright (C) Stefan Metzmacher 2006
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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 2 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, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "includes.h"
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#include "libcli/composite/composite.h"
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#include "winbind/wb_server.h"
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#include "smbd/service_task.h"
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#include "auth/credentials/credentials.h"
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#include "libcli/auth/libcli_auth.h"
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#include "librpc/gen_ndr/ndr_netlogon.h"
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#include "librpc/gen_ndr/ndr_netlogon_c.h"
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#include "librpc/gen_ndr/winbind.h"
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struct wb_sam_logon_state {
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struct composite_context *ctx;
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struct winbind_SamLogon *req;
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struct creds_CredentialState *creds_state;
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struct netr_Authenticator auth1, auth2;
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TALLOC_CTX *r_mem_ctx;
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struct netr_LogonSamLogon r;
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};
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static void wb_sam_logon_recv_domain(struct composite_context *ctx);
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static void wb_sam_logon_recv_samlogon(struct rpc_request *req);
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/*
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Find the connection to the DC (or find an existing connection)
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*/
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struct composite_context *wb_sam_logon_send(TALLOC_CTX *mem_ctx,
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struct wbsrv_service *service,
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struct winbind_SamLogon *req)
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{
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struct composite_context *c, *creq;
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struct wb_sam_logon_state *s;
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c = composite_create(mem_ctx, service->task->event_ctx);
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if (!c) return NULL;
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s = talloc_zero(c, struct wb_sam_logon_state);
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if (composite_nomem(s, c)) return c;
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s->ctx = c;
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s->req = req;
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c->private_data = s;
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creq = wb_sid2domain_send(s, service, service->primary_sid);
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composite_continue(c, creq, wb_sam_logon_recv_domain, s);
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return c;
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}
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/*
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Finish the connection to the DC
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Send of a SamLogon request to authenticate a user.
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*/
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static void wb_sam_logon_recv_domain(struct composite_context *creq)
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{
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struct wb_sam_logon_state *s = talloc_get_type(creq->async.private_data,
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struct wb_sam_logon_state);
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struct rpc_request *req;
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struct wbsrv_domain *domain;
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s->ctx->status = wb_sid2domain_recv(creq, &domain);
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if (!composite_is_ok(s->ctx)) return;
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s->creds_state = cli_credentials_get_netlogon_creds(domain->schannel_creds);
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creds_client_authenticator(s->creds_state, &s->auth1);
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s->r.in.server_name = talloc_asprintf(s, "\\\\%s",
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dcerpc_server_name(domain->netlogon_pipe));
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if (composite_nomem(s->r.in.server_name, s->ctx)) return;
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s->r.in.computer_name = cli_credentials_get_workstation(domain->schannel_creds);
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s->r.in.credential = &s->auth1;
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s->r.in.return_authenticator = &s->auth2;
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s->r.in.logon_level = s->req->in.logon_level;
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s->r.in.logon = s->req->in.logon;
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s->r.in.validation_level = s->req->in.validation_level;
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s->r.out.return_authenticator = NULL;
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/*
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* use a new talloc context for the LogonSamLogon call
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* because then we can just to a talloc_steal on this context
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* in the final _recv() function to give the caller all the content of
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* the s->r.out.validation
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*/
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s->r_mem_ctx = talloc_new(s);
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if (composite_nomem(s->r_mem_ctx, s->ctx)) return;
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req = dcerpc_netr_LogonSamLogon_send(domain->netlogon_pipe, s->r_mem_ctx, &s->r);
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composite_continue_rpc(s->ctx, req, wb_sam_logon_recv_samlogon, s);
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}
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/*
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NTLM Authentication
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Check the SamLogon reply and decrypt the session keys
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*/
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static void wb_sam_logon_recv_samlogon(struct rpc_request *req)
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{
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struct wb_sam_logon_state *s = talloc_get_type(req->async.private,
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struct wb_sam_logon_state);
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s->ctx->status = dcerpc_ndr_request_recv(req);
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if (!composite_is_ok(s->ctx)) return;
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s->ctx->status = s->r.out.result;
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if (!composite_is_ok(s->ctx)) return;
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if ((s->r.out.return_authenticator == NULL) ||
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(!creds_client_check(s->creds_state,
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&s->r.out.return_authenticator->cred))) {
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DEBUG(0, ("Credentials check failed!\n"));
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composite_error(s->ctx, NT_STATUS_ACCESS_DENIED);
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return;
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}
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/* Decrypt the session keys before we reform the info3, so the
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* person on the other end of winbindd pipe doesn't have to.
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* They won't have the encryption key anyway */
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creds_decrypt_samlogon(s->creds_state,
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s->r.in.validation_level,
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&s->r.out.validation);
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composite_done(s->ctx);
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}
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NTSTATUS wb_sam_logon_recv(struct composite_context *c,
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TALLOC_CTX *mem_ctx,
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struct winbind_SamLogon *req)
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{
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struct wb_sam_logon_state *s = talloc_get_type(c->private_data,
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struct wb_sam_logon_state);
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NTSTATUS status = composite_wait(c);
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if (NT_STATUS_IS_OK(status)) {
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talloc_steal(mem_ctx, s->r_mem_ctx);
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req->out.validation = s->r.out.validation;
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req->out.authoritative = 1;
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req->out.flags = 0;
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}
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talloc_free(s);
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return status;
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}
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