source/libcli/dgram/libdgram.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    a raw async NBT DGRAM library
   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 2 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, write to the Free Software
  20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21 */
  22
  23 #include "librpc/gen_ndr/ndr_nbt.h"
  24
  25 /*
  26   a datagram name request
  27 */
  28 struct nbt_dgram_request {
  29         struct nbt_dgram_request *next, *prev;
  30
  31         /* where to send the request */
  32         struct socket_address *dest;
  33
  34         /* the encoded request */
  35         DATA_BLOB encoded;
  36 };
  37
  38 /*
  39   context structure for operations on dgram packets
  40 */
  41 struct nbt_dgram_socket {
  42         struct socket_context *sock;
  43         struct event_context *event_ctx;
  44
  45         /* the fd event */
  46         struct fd_event *fde;
  47
  48         /* a queue of outgoing requests */
  49         struct nbt_dgram_request *send_queue;
  50
  51         /* a list of mailslot handlers */
  52         struct dgram_mailslot_handler *mailslot_handlers;
  53
  54         /* what to do with incoming request packets */
  55         struct {
  56                 void (*handler)(struct nbt_dgram_socket *, struct nbt_dgram_packet *,
  57                                 struct socket_address *src);
  58                 void *private;
  59         } incoming;
  60 };
  61
  62
  63 /*
  64   the mailslot code keeps a list of mailslot handlers. A mailslot
  65   handler is a function that receives incoming packets for a specific
  66   mailslot name. When a caller needs to send a mailslot and wants to
  67   get a reply then it needs to register itself as listening for
  68   incoming packets on the reply mailslot
  69 */
  70
  71 typedef void (*dgram_mailslot_handler_t)(struct dgram_mailslot_handler *,
  72                                          struct nbt_dgram_packet *,
  73                                          struct socket_address *src);
  74
  75 struct dgram_mailslot_handler {
  76         struct dgram_mailslot_handler *next, *prev;
  77
  78         struct nbt_dgram_socket *dgmsock;
  79         const char *mailslot_name;
  80
  81         dgram_mailslot_handler_t handler;
  82         void *private;
  83 };
  84
  85
  86 /* prototypes */
  87 NTSTATUS nbt_dgram_send(struct nbt_dgram_socket *dgmsock,
  88                         struct nbt_dgram_packet *packet,
  89                         struct socket_address *dest);
  90 NTSTATUS dgram_set_incoming_handler(struct nbt_dgram_socket *dgmsock,
  91                                     void (*handler)(struct nbt_dgram_socket *,
  92                                                     struct nbt_dgram_packet *,
  93                                                     struct socket_address *),
  94                                     void *private);
  95 struct nbt_dgram_socket *nbt_dgram_socket_init(TALLOC_CTX *mem_ctx,
  96                                                struct event_context *event_ctx);
  97
  98 const char *dgram_mailslot_name(struct nbt_dgram_packet *packet);
  99 struct dgram_mailslot_handler *dgram_mailslot_find(struct nbt_dgram_socket *dgmsock,
 100                                                    const char *mailslot_name);
 101 struct dgram_mailslot_handler *dgram_mailslot_listen(struct nbt_dgram_socket *dgmsock,
 102                                                      const char *mailslot_name,
 103                                                      dgram_mailslot_handler_t handler,
 104                                                      void *private);
 105 struct dgram_mailslot_handler *dgram_mailslot_temp(struct nbt_dgram_socket *dgmsock,
 106                                                    const char *mailslot_name,
 107                                                    dgram_mailslot_handler_t handler,
 108                                                    void *private);
 109 DATA_BLOB dgram_mailslot_data(struct nbt_dgram_packet *dgram);
 110
 111
 112 NTSTATUS dgram_mailslot_send(struct nbt_dgram_socket *dgmsock,
 113                              enum dgram_msg_type msg_type,
 114                              const char *mailslot_name,
 115                              struct nbt_name *dest_name,
 116                              struct socket_address *dest,
 117                              struct nbt_name *src_name,
 118                              DATA_BLOB *request);
 119
 120 NTSTATUS dgram_mailslot_netlogon_send(struct nbt_dgram_socket *dgmsock,
 121                                       struct nbt_name *dest_name,
 122                                       struct socket_address *dest,
 123                                       struct nbt_name *src_name,
 124                                       struct nbt_netlogon_packet *request);
 125 NTSTATUS dgram_mailslot_netlogon_reply(struct nbt_dgram_socket *dgmsock,
 126                                        struct nbt_dgram_packet *request,
 127                                        const char *mailslot_name,
 128                                        struct nbt_netlogon_packet *reply);
 129 NTSTATUS dgram_mailslot_netlogon_parse(struct dgram_mailslot_handler *dgmslot,
 130                                        TALLOC_CTX *mem_ctx,
 131                                        struct nbt_dgram_packet *dgram,
 132                                        struct nbt_netlogon_packet *netlogon);
 133
 134 NTSTATUS dgram_mailslot_ntlogon_send(struct nbt_dgram_socket *dgmsock,
 135                                      enum dgram_msg_type msg_type,
 136                                      struct nbt_name *dest_name,
 137                                      struct socket_address *dest,
 138                                      struct nbt_name *src_name,
 139                                      struct nbt_ntlogon_packet *request);
 140 NTSTATUS dgram_mailslot_ntlogon_reply(struct nbt_dgram_socket *dgmsock,
 141                                        struct nbt_dgram_packet *request,
 142                                        const char *mailslot_name,
 143                                        struct nbt_ntlogon_packet *reply);
 144 NTSTATUS dgram_mailslot_ntlogon_parse(struct dgram_mailslot_handler *dgmslot,
 145                                        TALLOC_CTX *mem_ctx,
 146                                        struct nbt_dgram_packet *dgram,
 147                                        struct nbt_ntlogon_packet *ntlogon);