source3/winbindd/winbindd_irpc.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    async implementation of commands submitted over IRPC
   4    Copyright (C) Volker Lendecke 2009
   5    Copyright (C) Guenther Deschner 2009
   6    Copyright (C) Andrew Bartlett 2014
   7    Copyright (C) Andrew Tridgell 2009
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 */
  22
  23 #include "includes.h"
  24 #include "winbindd.h"
  25 #include "librpc/gen_ndr/ndr_winbind_c.h"
  26 #include "source4/lib/messaging/irpc.h"
  27 #include "librpc/gen_ndr/ndr_winbind.h"
  28
  29 struct wb_irpc_forward_state {
  30         struct irpc_message *msg;
  31         struct winbind_DsrUpdateReadOnlyServerDnsRecords *req;
  32
  33         const char *opname;
  34         struct dcesrv_call_state *dce_call;
  35 };
  36
  37 /*
  38   called when the forwarded rpc request is finished
  39  */
  40 static void wb_irpc_forward_callback(struct tevent_req *subreq)
  41 {
  42         struct wb_irpc_forward_state *st =
  43                 tevent_req_callback_data(subreq,
  44                 struct wb_irpc_forward_state);
  45         const char *opname = st->opname;
  46         NTSTATUS status;
  47
  48         status = dcerpc_binding_handle_call_recv(subreq);
  49         TALLOC_FREE(subreq);
  50         if (!NT_STATUS_IS_OK(status)) {
  51                 DEBUG(0,("RPC callback failed for %s - %s\n",
  52                          opname, nt_errstr(status)));
  53                 irpc_send_reply(st->msg, status);
  54         }
  55
  56         irpc_send_reply(st->msg, status);
  57 }
  58
  59
  60
  61 /**
  62  * Forward a RPC call using IRPC to another task
  63  */
  64
  65 static NTSTATUS wb_irpc_forward_rpc_call(struct irpc_message *msg, TALLOC_CTX *mem_ctx,
  66                                          struct tevent_context *ev,
  67                                          void *r, uint32_t callid,
  68                                          const char *opname,
  69                                          struct winbindd_domain *domain,
  70                                          uint32_t timeout)
  71 {
  72         struct wb_irpc_forward_state *st;
  73         struct dcerpc_binding_handle *binding_handle;
  74         struct tevent_req *subreq;
  75
  76         st = talloc(mem_ctx, struct wb_irpc_forward_state);
  77         if (st == NULL) {
  78                 return NT_STATUS_NO_MEMORY;
  79         }
  80
  81         st->msg = msg;
  82         st->opname   = opname;
  83
  84         binding_handle =  dom_child_handle(domain);
  85         if (binding_handle == NULL) {
  86                 DEBUG(0,("%s: Failed to forward request to winbind handler for %s\n",
  87                          opname, domain->name));
  88                 return NT_STATUS_UNSUCCESSFUL;
  89         }
  90
  91         /* reset timeout for the handle */
  92         dcerpc_binding_handle_set_timeout(binding_handle, timeout);
  93
  94         /* forward the call */
  95         subreq = dcerpc_binding_handle_call_send(st, ev,
  96                                                  binding_handle,
  97                                                  NULL, &ndr_table_winbind,
  98                                                  callid,
  99                                                  msg, r);
 100         if (subreq == NULL) {
 101                 DEBUG(0,("%s: Failed to forward request to winbind handler for %s\n",
 102                          opname, domain->name));
 103                 return NT_STATUS_UNSUCCESSFUL;
 104         }
 105
 106         /* mark the request as replied async */
 107         msg->defer_reply = true;
 108
 109         /* setup the callback */
 110         tevent_req_set_callback(subreq, wb_irpc_forward_callback, st);
 111         return NT_STATUS_OK;
 112 }
 113
 114 static NTSTATUS wb_irpc_DsrUpdateReadOnlyServerDnsRecords(struct irpc_message *msg,
 115                                                    struct winbind_DsrUpdateReadOnlyServerDnsRecords *req)
 116 {
 117         struct winbindd_domain *domain = find_our_domain();
 118         if (domain == NULL) {
 119                 return NT_STATUS_NO_SUCH_DOMAIN;
 120         }
 121
 122         DEBUG(5, ("wb_irpc_DsrUpdateReadOnlyServerDnsRecords called\n"));
 123
 124         return wb_irpc_forward_rpc_call(msg, msg,
 125                                         winbind_event_context(),
 126                                         req, NDR_WINBIND_DSRUPDATEREADONLYSERVERDNSRECORDS,
 127                                         "winbind_DsrUpdateReadOnlyServerDnsRecords",
 128                                         domain, IRPC_CALL_TIMEOUT);
 129 }
 130
 131 static NTSTATUS wb_irpc_SamLogon(struct irpc_message *msg,
 132                                  struct winbind_SamLogon *req)
 133 {
 134         struct winbindd_domain *domain;
 135         const char *target_domain_name;
 136         if (req->in.logon.network == NULL) {
 137                 return NT_STATUS_REQUEST_NOT_ACCEPTED;
 138         }
 139         target_domain_name = req->in.logon.network->identity_info.domain_name.string;
 140
 141         domain = find_auth_domain(0, target_domain_name);
 142         if (domain == NULL) {
 143                 return NT_STATUS_NO_SUCH_USER;
 144         }
 145
 146         DEBUG(5, ("wb_irpc_SamLogon called\n"));
 147
 148         return wb_irpc_forward_rpc_call(msg, msg,
 149                                         winbind_event_context(),
 150                                         req, NDR_WINBIND_SAMLOGON,
 151                                         "winbind_SamLogon",
 152                                         domain, IRPC_CALL_TIMEOUT);
 153 }
 154
 155 NTSTATUS wb_irpc_register(void)
 156 {
 157         NTSTATUS status;
 158         status = IRPC_REGISTER(winbind_imessaging_context(), winbind, WINBIND_DSRUPDATEREADONLYSERVERDNSRECORDS,
 159                                wb_irpc_DsrUpdateReadOnlyServerDnsRecords, NULL);
 160         if (!NT_STATUS_IS_OK(status)) {
 161                 return status;
 162         }
 163         status = IRPC_REGISTER(winbind_imessaging_context(), winbind, WINBIND_SAMLOGON,
 164                                wb_irpc_SamLogon, NULL);
 165         return status;
 166 }