source4/lib/messaging/irpc.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Samba internal rpc code - header
   5
   6    Copyright (C) Andrew Tridgell 2005
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #ifndef IRPC_H
  23 #define IRPC_H
  24
  25 #include "librpc/gen_ndr/irpc.h"
  26
  27 /*
  28   an incoming irpc message
  29 */
  30 struct irpc_message {
  31         struct server_id from;
  32         void *private;
  33         struct irpc_header header;
  34         struct ndr_pull *ndr;
  35         bool defer_reply;
  36         struct messaging_context *msg_ctx;
  37         struct irpc_list *irpc;
  38         void *data;
  39         struct event_context *ev;
  40 };
  41
  42 /* don't allow calls to take too long */
  43 #define IRPC_CALL_TIMEOUT 10
  44
  45
  46 /* the server function type */
  47 typedef NTSTATUS (*irpc_function_t)(struct irpc_message *, void *r);
  48
  49 /* register a server function with the irpc messaging system */
  50 #define IRPC_REGISTER(msg_ctx, pipename, funcname, function, private) \
  51    irpc_register(msg_ctx, &ndr_table_ ## pipename, \
  52                           NDR_ ## funcname, \
  53                           (irpc_function_t)function, private)
  54
  55 /* make a irpc call */
  56 #define IRPC_CALL(msg_ctx, server_id, pipename, funcname, ptr, ctx) \
  57    irpc_call(msg_ctx, server_id, &ndr_table_ ## pipename, NDR_ ## funcname, ptr, ctx)
  58
  59 #define IRPC_CALL_SEND(msg_ctx, server_id, pipename, funcname, ptr, ctx) \
  60    irpc_call_send(msg_ctx, server_id, &ndr_table_ ## pipename, NDR_ ## funcname, ptr, ctx)
  61
  62
  63 /*
  64   a pending irpc call
  65 */
  66 struct irpc_request {
  67         struct messaging_context *msg_ctx;
  68         const struct ndr_interface_table *table;
  69         int callnum;
  70         int callid;
  71         void *r;
  72         NTSTATUS status;
  73         bool done;
  74         bool reject_free;
  75         TALLOC_CTX *mem_ctx;
  76         struct {
  77                 void (*fn)(struct irpc_request *);
  78                 void *private;
  79         } async;
  80 };
  81
  82 struct loadparm_context;
  83
  84 typedef void (*msg_callback_t)(struct messaging_context *msg, void *private,
  85                                uint32_t msg_type,
  86                                struct server_id server_id, DATA_BLOB *data);
  87
  88 NTSTATUS messaging_send(struct messaging_context *msg, struct server_id server,
  89                         uint32_t msg_type, DATA_BLOB *data);
  90 NTSTATUS messaging_register(struct messaging_context *msg, void *private,
  91                             uint32_t msg_type,
  92                             msg_callback_t fn);
  93 NTSTATUS messaging_register_tmp(struct messaging_context *msg, void *private,
  94                                 msg_callback_t fn, uint32_t *msg_type);
  95 struct messaging_context *messaging_init(TALLOC_CTX *mem_ctx,
  96                                          const char *dir,
  97                                          struct server_id server_id,
  98                                          struct smb_iconv_convenience *iconv_convenience,
  99                                          struct event_context *ev);
 100 struct messaging_context *messaging_client_init(TALLOC_CTX *mem_ctx,
 101                                          const char *dir,
 102                                          struct smb_iconv_convenience *iconv_convenience,
 103                                          struct event_context *ev);
 104 NTSTATUS messaging_send_ptr(struct messaging_context *msg, struct server_id server,
 105                             uint32_t msg_type, void *ptr);
 106 void messaging_deregister(struct messaging_context *msg, uint32_t msg_type, void *private);
 107
 108
 109
 110
 111 NTSTATUS irpc_register(struct messaging_context *msg_ctx,
 112                        const struct ndr_interface_table *table,
 113                        int call, irpc_function_t fn, void *private);
 114 struct irpc_request *irpc_call_send(struct messaging_context *msg_ctx,
 115                                     struct server_id server_id,
 116                                     const struct ndr_interface_table *table,
 117                                     int callnum, void *r, TALLOC_CTX *ctx);
 118 NTSTATUS irpc_call_recv(struct irpc_request *irpc);
 119 NTSTATUS irpc_call(struct messaging_context *msg_ctx,
 120                    struct server_id server_id,
 121                    const struct ndr_interface_table *table,
 122                    int callnum, void *r, TALLOC_CTX *ctx);
 123
 124 NTSTATUS irpc_add_name(struct messaging_context *msg_ctx, const char *name);
 125 struct server_id *irpc_servers_byname(struct messaging_context *msg_ctx, TALLOC_CTX *mem_ctx, const char *name);
 126 void irpc_remove_name(struct messaging_context *msg_ctx, const char *name);
 127 NTSTATUS irpc_send_reply(struct irpc_message *m, NTSTATUS status);
 128 struct server_id messaging_get_server_id(struct messaging_context *msg_ctx);
 129
 130 #endif
 131