+/*
+ Unix SMB/CIFS implementation.
+
+ Do a netr_LogonSamLogon to a remote DC
+
+ Copyright (C) Volker Lendecke 2005
+ Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
+ Copyright (C) Stefan Metzmacher 2006
+
+ 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 2 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, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+#include "libcli/composite/composite.h"
+#include "winbind/wb_server.h"
+#include "smbd/service_task.h"
+#include "libcli/auth/credentials.h"
+#include "libcli/auth/libcli_auth.h"
+#include "librpc/gen_ndr/ndr_netlogon.h"
+#include "librpc/gen_ndr/ndr_netlogon_c.h"
+#include "librpc/gen_ndr/winbind.h"
+
+struct wb_sam_logon_state {
+ struct composite_context *ctx;
+
+ struct winbind_SamLogon *req;
+
+ struct creds_CredentialState *creds_state;
+ struct netr_Authenticator auth1, auth2;
+
+ TALLOC_CTX *r_mem_ctx;
+ struct netr_LogonSamLogon r;
+};
+
+static void wb_sam_logon_recv_domain(struct composite_context *ctx);
+static void wb_sam_logon_recv_samlogon(struct rpc_request *req);
+
+/*
+ Find the connection to the DC (or find an existing connection)
+*/
+struct composite_context *wb_sam_logon_send(TALLOC_CTX *mem_ctx,
+ struct wbsrv_service *service,
+ struct winbind_SamLogon *req)
+{
+ struct composite_context *c, *creq;
+ struct wb_sam_logon_state *s;
+
+ c = composite_create(mem_ctx, service->task->event_ctx);
+ if (!c) return NULL;
+
+ s = talloc_zero(c, struct wb_sam_logon_state);
+ if (composite_nomem(s, c)) return c;
+ s->ctx = c;
+ s->req = req;
+
+ c->private_data = s;
+
+ creq = wb_sid2domain_send(s, service, service->primary_sid);
+ composite_continue(c, creq, wb_sam_logon_recv_domain, s);
+ return c;
+}
+
+/*
+ Finish the connection to the DC
+ Send of a SamLogon request to authenticate a user.
+*/
+static void wb_sam_logon_recv_domain(struct composite_context *creq)
+{
+ struct wb_sam_logon_state *s = talloc_get_type(creq->async.private_data,
+ struct wb_sam_logon_state);
+ struct rpc_request *req;
+ struct wbsrv_domain *domain;
+
+ s->ctx->status = wb_sid2domain_recv(creq, &domain);
+ if (!composite_is_ok(s->ctx)) return;
+
+ s->creds_state = cli_credentials_get_netlogon_creds(domain->schannel_creds);
+ creds_client_authenticator(s->creds_state, &s->auth1);
+
+ s->r.in.server_name = talloc_asprintf(s, "\\\\%s",
+ dcerpc_server_name(domain->netlogon_pipe));
+ if (composite_nomem(s->r.in.server_name, s->ctx)) return;
+
+ s->r.in.computer_name = cli_credentials_get_workstation(domain->schannel_creds);
+ s->r.in.credential = &s->auth1;
+ s->r.in.return_authenticator = &s->auth2;
+ s->r.in.logon_level = s->req->in.logon_level;
+ s->r.in.logon = s->req->in.logon;
+ s->r.in.validation_level = s->req->in.validation_level;
+ s->r.out.return_authenticator = NULL;
+
+ /*
+ * use a new talloc context for the LogonSamLogon call
+ * because then we can just to a talloc_steal on this context
+ * in the final _recv() function to give the caller all the content of
+ * the s->r.out.validation
+ */
+ s->r_mem_ctx = talloc_new(s);
+ if (composite_nomem(s->r_mem_ctx, s->ctx)) return;
+
+ req = dcerpc_netr_LogonSamLogon_send(domain->netlogon_pipe, s->r_mem_ctx, &s->r);
+ composite_continue_rpc(s->ctx, req, wb_sam_logon_recv_samlogon, s);
+}
+
+/*
+ NTLM Authentication
+
+ Check the SamLogon reply and decrypt the session keys
+*/
+static void wb_sam_logon_recv_samlogon(struct rpc_request *req)
+{
+ struct wb_sam_logon_state *s = talloc_get_type(req->async.private,
+ struct wb_sam_logon_state);
+
+ s->ctx->status = dcerpc_ndr_request_recv(req);
+ if (!composite_is_ok(s->ctx)) return;
+
+ s->ctx->status = s->r.out.result;
+ if (!composite_is_ok(s->ctx)) return;
+
+ if ((s->r.out.return_authenticator == NULL) ||
+ (!creds_client_check(s->creds_state,
+ &s->r.out.return_authenticator->cred))) {
+ DEBUG(0, ("Credentials check failed!\n"));
+ composite_error(s->ctx, NT_STATUS_ACCESS_DENIED);
+ return;
+ }
+
+ /* Decrypt the session keys before we reform the info3, so the
+ * person on the other end of winbindd pipe doesn't have to.
+ * They won't have the encryption key anyway */
+ creds_decrypt_samlogon(s->creds_state,
+ s->r.in.validation_level,
+ &s->r.out.validation);
+
+ composite_done(s->ctx);
+}
+
+NTSTATUS wb_sam_logon_recv(struct composite_context *c,
+ TALLOC_CTX *mem_ctx,
+ struct winbind_SamLogon *req)
+{
+ struct wb_sam_logon_state *s = talloc_get_type(c->private_data,
+ struct wb_sam_logon_state);
+ NTSTATUS status = composite_wait(c);
+
+ if (NT_STATUS_IS_OK(status)) {
+ talloc_steal(mem_ctx, s->r_mem_ctx);
+ req->out.validation = s->r.out.validation;
+ req->out.authoritative = 1;
+ req->out.flags = 0;
+ }
+
+ talloc_free(s);
+ return status;
+}
git.samba.org / jelmer / samba4-debian.git / commitdiff