source3/libcli/nbt/libnbt.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    a raw async NBT 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 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 __LIBNBT_H__
  23 #define __LIBNBT_H__
  24
  25 #include "librpc/gen_ndr/nbt.h"
  26 #include "librpc/ndr/libndr.h"
  27
  28 /*
  29   possible states for pending requests
  30 */
  31 enum nbt_request_state {NBT_REQUEST_SEND,
  32                         NBT_REQUEST_WAIT,
  33                         NBT_REQUEST_DONE,
  34                         NBT_REQUEST_TIMEOUT,
  35                         NBT_REQUEST_ERROR};
  36
  37 /*
  38   a nbt name request
  39 */
  40 struct nbt_name_request {
  41         struct nbt_name_request *next, *prev;
  42
  43         enum nbt_request_state state;
  44
  45         NTSTATUS status;
  46
  47         /* the socket this was on */
  48         struct nbt_name_socket *nbtsock;
  49
  50         /* where to send the request */
  51         struct socket_address *dest;
  52
  53         /* timeout between retries */
  54         int timeout;
  55
  56         /* how many retries to send on timeout */
  57         int num_retries;
  58
  59         /* whether we have received a WACK */
  60         bool received_wack;
  61
  62         /* the timeout event */
  63         struct timed_event *te;
  64
  65         /* the name transaction id */
  66         uint16_t name_trn_id;
  67
  68         /* is it a reply? */
  69         bool is_reply;
  70
  71         /* the encoded request */
  72         DATA_BLOB encoded;
  73
  74         /* shall we allow multiple replies? */
  75         bool allow_multiple_replies;
  76
  77         unsigned int num_replies;
  78         struct nbt_name_reply {
  79                 struct nbt_name_packet *packet;
  80                 struct socket_address *dest;
  81         } *replies;
  82
  83         /* information on what to do on completion */
  84         struct {
  85                 void (*fn)(struct nbt_name_request *);
  86                 void *_private;
  87         } async;
  88 };
  89
  90
  91
  92 /*
  93   context structure for operations on name queries
  94 */
  95 struct nbt_name_socket {
  96         struct socket_context *sock;
  97         struct event_context *event_ctx;
  98 /*
  99         struct smb_iconv_convenience *iconv_convenience;
 100 */
 101         /* a queue of requests pending to be sent */
 102         struct nbt_name_request *send_queue;
 103
 104         /* the fd event */
 105         struct fd_event *fde;
 106
 107         /* mapping from name_trn_id to pending event */
 108         struct idr_context *idr;
 109
 110         /* how many requests are waiting for a reply */
 111         uint16_t num_pending;
 112
 113         /* what to do with incoming request packets */
 114         struct {
 115                 void (*handler)(struct nbt_name_socket *, struct nbt_name_packet *,
 116                                 struct socket_address *);
 117                 void *_private;
 118         } incoming;
 119
 120         /* what to do with unexpected replies */
 121         struct {
 122                 void (*handler)(struct nbt_name_socket *, struct nbt_name_packet *,
 123                                 struct socket_address *);
 124                 void *_private;
 125         } unexpected;
 126 };
 127
 128
 129 /* a simple name query */
 130 struct nbt_name_query {
 131         struct {
 132                 struct nbt_name name;
 133                 const char *dest_addr;
 134                 uint16_t dest_port;
 135                 bool broadcast;
 136                 bool wins_lookup;
 137                 int timeout; /* in seconds */
 138                 int retries;
 139         } in;
 140         struct {
 141                 const char *reply_from;
 142                 struct nbt_name name;
 143                 int16_t num_addrs;
 144                 const char **reply_addrs;
 145         } out;
 146 };
 147
 148 /* a simple name status query */
 149 struct nbt_name_status {
 150         struct {
 151                 struct nbt_name name;
 152                 const char *dest_addr;
 153                 uint16_t dest_port;
 154                 int timeout; /* in seconds */
 155                 int retries;
 156         } in;
 157         struct {
 158                 const char *reply_from;
 159                 struct nbt_name name;
 160                 struct nbt_rdata_status status;
 161         } out;
 162 };
 163
 164 /* a name registration request */
 165 struct nbt_name_register {
 166         struct {
 167                 struct nbt_name name;
 168                 const char *dest_addr;
 169                 uint16_t dest_port;
 170                 const char *address;
 171                 uint16_t nb_flags;
 172                 bool register_demand;
 173                 bool broadcast;
 174                 bool multi_homed;
 175                 uint32_t ttl;
 176                 int timeout; /* in seconds */
 177                 int retries;
 178         } in;
 179         struct {
 180                 const char *reply_from;
 181                 struct nbt_name name;
 182                 const char *reply_addr;
 183                 uint8_t rcode;
 184         } out;
 185 };
 186
 187 /* a send 3 times then demand name broadcast name registration */
 188 struct nbt_name_register_bcast {
 189         struct {
 190                 struct nbt_name name;
 191                 const char *dest_addr;
 192                 uint16_t dest_port;
 193                 const char *address;
 194                 uint16_t nb_flags;
 195                 uint32_t ttl;
 196         } in;
 197 };
 198
 199
 200 /* wins name register with multiple wins servers to try and multiple
 201    addresses to register */
 202 struct nbt_name_register_wins {
 203         struct {
 204                 struct nbt_name name;
 205                 const char **wins_servers;
 206                 uint16_t wins_port;
 207                 const char **addresses;
 208                 uint16_t nb_flags;
 209                 uint32_t ttl;
 210         } in;
 211         struct {
 212                 const char *wins_server;
 213                 uint8_t rcode;
 214         } out;
 215 };
 216
 217
 218
 219 /* a name refresh request */
 220 struct nbt_name_refresh {
 221         struct {
 222                 struct nbt_name name;
 223                 const char *dest_addr;
 224                 uint16_t dest_port;
 225                 const char *address;
 226                 uint16_t nb_flags;
 227                 bool broadcast;
 228                 uint32_t ttl;
 229                 int timeout; /* in seconds */
 230                 int retries;
 231         } in;
 232         struct {
 233                 const char *reply_from;
 234                 struct nbt_name name;
 235                 const char *reply_addr;
 236                 uint8_t rcode;
 237         } out;
 238 };
 239
 240 /* wins name refresh with multiple wins servers to try and multiple
 241    addresses to register */
 242 struct nbt_name_refresh_wins {
 243         struct {
 244                 struct nbt_name name;
 245                 const char **wins_servers;
 246                 uint16_t wins_port;
 247                 const char **addresses;
 248                 uint16_t nb_flags;
 249                 uint32_t ttl;
 250         } in;
 251         struct {
 252                 const char *wins_server;
 253                 uint8_t rcode;
 254         } out;
 255 };
 256
 257
 258 /* a name release request */
 259 struct nbt_name_release {
 260         struct {
 261                 struct nbt_name name;
 262                 const char *dest_addr;
 263                 uint16_t dest_port;
 264                 const char *address;
 265                 uint16_t nb_flags;
 266                 bool broadcast;
 267                 int timeout; /* in seconds */
 268                 int retries;
 269         } in;
 270         struct {
 271                 const char *reply_from;
 272                 struct nbt_name name;
 273                 const char *reply_addr;
 274                 uint8_t rcode;
 275         } out;
 276 };
 277
 278 struct nbt_name_socket *nbt_name_socket_init(TALLOC_CTX *mem_ctx,
 279                                              struct event_context *event_ctx);
 280                                              /*,
 281                                              struct smb_iconv_convenience *iconv_convenience);*/
 282 struct nbt_name_request *nbt_name_query_send(struct nbt_name_socket *nbtsock,
 283                                              struct nbt_name_query *io);
 284 NTSTATUS nbt_name_query_recv(struct nbt_name_request *req,
 285                              TALLOC_CTX *mem_ctx, struct nbt_name_query *io);
 286 NTSTATUS nbt_name_query(struct nbt_name_socket *nbtsock,
 287                         TALLOC_CTX *mem_ctx, struct nbt_name_query *io);
 288 struct nbt_name_request *nbt_name_status_send(struct nbt_name_socket *nbtsock,
 289                                               struct nbt_name_status *io);
 290 NTSTATUS nbt_name_status_recv(struct nbt_name_request *req,
 291                              TALLOC_CTX *mem_ctx, struct nbt_name_status *io);
 292 NTSTATUS nbt_name_status(struct nbt_name_socket *nbtsock,
 293                         TALLOC_CTX *mem_ctx, struct nbt_name_status *io);
 294
 295 NTSTATUS nbt_name_dup(TALLOC_CTX *mem_ctx, struct nbt_name *name, struct nbt_name *newname);
 296 NTSTATUS nbt_name_to_blob(TALLOC_CTX *mem_ctx, DATA_BLOB *blob, struct nbt_name *name);
 297 NTSTATUS nbt_name_from_blob(TALLOC_CTX *mem_ctx, const DATA_BLOB *blob, struct nbt_name *name);
 298 void nbt_choose_called_name(TALLOC_CTX *mem_ctx, struct nbt_name *n, const char *name, int type);
 299 char *nbt_name_string(TALLOC_CTX *mem_ctx, const struct nbt_name *name);
 300 NTSTATUS nbt_name_register(struct nbt_name_socket *nbtsock,
 301                            TALLOC_CTX *mem_ctx, struct nbt_name_register *io);
 302 NTSTATUS nbt_name_refresh(struct nbt_name_socket *nbtsock,
 303                            TALLOC_CTX *mem_ctx, struct nbt_name_refresh *io);
 304 NTSTATUS nbt_name_release(struct nbt_name_socket *nbtsock,
 305                            TALLOC_CTX *mem_ctx, struct nbt_name_release *io);
 306 NTSTATUS nbt_name_register_wins(struct nbt_name_socket *nbtsock,
 307                                 TALLOC_CTX *mem_ctx,
 308                                 struct nbt_name_register_wins *io);
 309 NTSTATUS nbt_name_refresh_wins(struct nbt_name_socket *nbtsock,
 310                                 TALLOC_CTX *mem_ctx,
 311                                 struct nbt_name_refresh_wins *io);
 312 NTSTATUS nbt_name_register_recv(struct nbt_name_request *req,
 313                                 TALLOC_CTX *mem_ctx, struct nbt_name_register *io);
 314 struct nbt_name_request *nbt_name_register_send(struct nbt_name_socket *nbtsock,
 315                                                 struct nbt_name_register *io);
 316 NTSTATUS nbt_name_release_recv(struct nbt_name_request *req,
 317                                TALLOC_CTX *mem_ctx, struct nbt_name_release *io);
 318
 319 struct nbt_name_request *nbt_name_release_send(struct nbt_name_socket *nbtsock,
 320                                                struct nbt_name_release *io);
 321
 322 NTSTATUS nbt_name_refresh_recv(struct nbt_name_request *req,
 323                                TALLOC_CTX *mem_ctx, struct nbt_name_refresh *io);
 324
 325 NTSTATUS nbt_set_incoming_handler(struct nbt_name_socket *nbtsock,
 326                                   void (*handler)(struct nbt_name_socket *, struct nbt_name_packet *,
 327                                                   struct socket_address *),
 328                                   void *_private);
 329 NTSTATUS nbt_name_reply_send(struct nbt_name_socket *nbtsock,
 330                              struct socket_address *dest,
 331                              struct nbt_name_packet *request);
 332
 333
 334 NDR_SCALAR_PROTO(wrepl_nbt_name, const struct nbt_name *);
 335 NDR_SCALAR_PROTO(nbt_string, const char *);
 336 NDR_BUFFER_PROTO(nbt_name, struct nbt_name);
 337 NTSTATUS nbt_rcode_to_ntstatus(uint8_t rcode);
 338
 339 struct composite_context;
 340 struct composite_context *nbt_name_register_bcast_send(struct nbt_name_socket *nbtsock,
 341                                                        struct nbt_name_register_bcast *io);
 342 NTSTATUS nbt_name_register_bcast_recv(struct composite_context *c);
 343 struct composite_context *nbt_name_register_wins_send(struct nbt_name_socket *nbtsock,
 344                                                       struct nbt_name_register_wins *io);
 345 NTSTATUS nbt_name_refresh_wins_recv(struct composite_context *c, TALLOC_CTX *mem_ctx,
 346                                      struct nbt_name_refresh_wins *io);
 347 struct composite_context *nbt_name_refresh_wins_send(struct nbt_name_socket *nbtsock,
 348                                                       struct nbt_name_refresh_wins *io);
 349 NTSTATUS nbt_name_register_wins_recv(struct composite_context *c, TALLOC_CTX *mem_ctx,
 350                                      struct nbt_name_register_wins *io);
 351
 352
 353 #endif /* __LIBNBT_H__ */