librpc/rpc/rpc_common.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Copyright (C) Stefan Metzmacher 2010-2011
   5    Copyright (C) Andrew Tridgell 2010-2011
   6    Copyright (C) Simo Sorce 2010
   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 __DEFAULT_LIBRPC_RPCCOMMON_H__
  23 #define __DEFAULT_LIBRPC_RPCCOMMON_H__
  24
  25 #include "gen_ndr/dcerpc.h"
  26 #include "lib/util/attr.h"
  27
  28 struct dcerpc_binding_handle;
  29 struct dcerpc_pipe_handle;
  30 struct dcerpc_pipe_handle_connection;
  31 struct GUID;
  32 struct ndr_interface_table;
  33 struct ndr_interface_call;
  34 struct ndr_push;
  35 struct ndr_pull;
  36 struct ncacn_packet;
  37 struct epm_floor;
  38 struct epm_tower;
  39 struct tevent_context;
  40 struct tstream_context;
  41 struct gensec_security;
  42
  43 enum dcerpc_transport_t {
  44         NCA_UNKNOWN, NCACN_NP, NCACN_IP_TCP, NCACN_IP_UDP, NCACN_VNS_IPC,
  45         NCACN_VNS_SPP, NCACN_AT_DSP, NCADG_AT_DDP, NCALRPC, NCACN_UNIX_STREAM,
  46         NCADG_UNIX_DGRAM, NCACN_HTTP, NCADG_IPX, NCACN_SPX, NCACN_INTERNAL };
  47
  48 /** this describes a binding to a particular transport/pipe */
  49 struct dcerpc_binding;
  50
  51 /* dcerpc pipe flags */
  52 #define DCERPC_DEBUG_PRINT_IN          (1<<0)
  53 #define DCERPC_DEBUG_PRINT_OUT         (1<<1)
  54 #define DCERPC_DEBUG_PRINT_BOTH (DCERPC_DEBUG_PRINT_IN | DCERPC_DEBUG_PRINT_OUT)
  55
  56 #define DCERPC_DEBUG_VALIDATE_IN       (1<<2)
  57 #define DCERPC_DEBUG_VALIDATE_OUT      (1<<3)
  58 #define DCERPC_DEBUG_VALIDATE_BOTH (DCERPC_DEBUG_VALIDATE_IN | DCERPC_DEBUG_VALIDATE_OUT)
  59
  60 #define DCERPC_CONNECT                 (1<<4)
  61 #define DCERPC_SIGN                    (1<<5)
  62 #define DCERPC_SEAL                    (1<<6)
  63
  64 #define DCERPC_PUSH_BIGENDIAN          (1<<7)
  65 #define DCERPC_PULL_BIGENDIAN          (1<<8)
  66
  67 #define DCERPC_SCHANNEL                (1<<9)
  68
  69 #define DCERPC_ANON_FALLBACK           (1<<10)
  70
  71 /* use a 128 bit session key */
  72 #define DCERPC_SCHANNEL_128            (1<<12)
  73
  74 /* check incoming pad bytes */
  75 #define DCERPC_DEBUG_PAD_CHECK         (1<<13)
  76
  77 /* set LIBNDR_FLAG_REF_ALLOC flag when decoding NDR */
  78 #define DCERPC_NDR_REF_ALLOC           (1<<14)
  79
  80 #define DCERPC_AUTH_OPTIONS    (DCERPC_SEAL|DCERPC_SIGN|DCERPC_SCHANNEL|DCERPC_AUTH_SPNEGO|DCERPC_AUTH_KRB5|DCERPC_AUTH_NTLM)
  81
  82 /* select spnego auth */
  83 #define DCERPC_AUTH_SPNEGO             (1<<15)
  84
  85 /* select krb5 auth */
  86 #define DCERPC_AUTH_KRB5               (1<<16)
  87
  88 #define DCERPC_SMB2                    (1<<17)
  89
  90 /* select NTLM auth */
  91 #define DCERPC_AUTH_NTLM               (1<<18)
  92
  93 /* this triggers the DCERPC_PFC_FLAG_CONC_MPX flag in the bind request */
  94 #define DCERPC_CONCURRENT_MULTIPLEX     (1<<19)
  95
  96 /* this indicates DCERPC_PFC_FLAG_SUPPORT_HEADER_SIGN flag was negotiated */
  97 #define DCERPC_HEADER_SIGNING          (1<<20)
  98
  99 /* use NDR64 transport */
 100 #define DCERPC_NDR64                   (1<<21)
 101
 102 /* handle upgrades or downgrades automatically */
 103 #define DCERPC_SCHANNEL_AUTO           (1<<23)
 104
 105 /* use aes schannel with hmac-sh256 session key */
 106 #define DCERPC_SCHANNEL_AES            (1<<24)
 107
 108 /* this triggers the DCERPC_PFC_FLAG_SUPPORT_HEADER_SIGN flag in the bind request */
 109 #define DCERPC_PROPOSE_HEADER_SIGNING          (1<<25)
 110
 111 #define DCERPC_PACKET                   (1<<26)
 112
 113 #define DCERPC_SMB1                    (1<<27)
 114
 115 /* The following definitions come from ../librpc/rpc/dcerpc_error.c  */
 116
 117 const char *dcerpc_errstr(TALLOC_CTX *mem_ctx, uint32_t fault_code);
 118 NTSTATUS dcerpc_fault_to_nt_status(uint32_t fault_code);
 119 uint32_t dcerpc_fault_from_nt_status(NTSTATUS nt_status);
 120
 121 /* The following definitions come from ../librpc/rpc/binding.c  */
 122
 123 const char *epm_floor_string(TALLOC_CTX *mem_ctx, struct epm_floor *epm_floor);
 124 char *dcerpc_floor_get_rhs_data(TALLOC_CTX *mem_ctx, struct epm_floor *epm_floor);
 125 enum dcerpc_transport_t dcerpc_transport_by_endpoint_protocol(int prot);
 126 struct dcerpc_binding *dcerpc_binding_dup(TALLOC_CTX *mem_ctx,
 127                                           const struct dcerpc_binding *b);
 128 NTSTATUS dcerpc_binding_build_tower(TALLOC_CTX *mem_ctx,
 129                                     const struct dcerpc_binding *binding,
 130                                     struct epm_tower *tower);
 131 NTSTATUS dcerpc_binding_from_tower(TALLOC_CTX *mem_ctx,
 132                                    struct epm_tower *tower,
 133                                    struct dcerpc_binding **b_out);
 134 NTSTATUS dcerpc_parse_binding(TALLOC_CTX *mem_ctx, const char *s, struct dcerpc_binding **b_out);
 135 char *dcerpc_binding_string(TALLOC_CTX *mem_ctx, const struct dcerpc_binding *b);
 136 struct GUID dcerpc_binding_get_object(const struct dcerpc_binding *b);
 137 NTSTATUS dcerpc_binding_set_object(struct dcerpc_binding *b,
 138                                    struct GUID object);
 139 enum dcerpc_transport_t dcerpc_binding_get_transport(const struct dcerpc_binding *b);
 140 NTSTATUS dcerpc_binding_set_transport(struct dcerpc_binding *b,
 141                                       enum dcerpc_transport_t transport);
 142 void dcerpc_binding_get_auth_info(const struct dcerpc_binding *b,
 143                                   enum dcerpc_AuthType *_auth_type,
 144                                   enum dcerpc_AuthLevel *_auth_level);
 145 uint32_t dcerpc_binding_get_assoc_group_id(const struct dcerpc_binding *b);
 146 NTSTATUS dcerpc_binding_set_assoc_group_id(struct dcerpc_binding *b,
 147                                            uint32_t assoc_group_id);
 148 struct ndr_syntax_id dcerpc_binding_get_abstract_syntax(const struct dcerpc_binding *b);
 149 NTSTATUS dcerpc_binding_set_abstract_syntax(struct dcerpc_binding *b,
 150                                             const struct ndr_syntax_id *syntax);
 151 const char *dcerpc_binding_get_string_option(const struct dcerpc_binding *b,
 152                                              const char *name);
 153 char *dcerpc_binding_copy_string_option(TALLOC_CTX *mem_ctx,
 154                                         const struct dcerpc_binding *b,
 155                                         const char *name);
 156 NTSTATUS dcerpc_binding_set_string_option(struct dcerpc_binding *b,
 157                                           const char *name,
 158                                           const char *value);
 159 void *_dcerpc_binding_get_pointer_option(const struct dcerpc_binding *b,
 160                                          const char *name,
 161                                          const char *type);
 162 #define dcerpc_binding_get_pointer_option(b, name, type) \
 163         talloc_get_type(_dcerpc_binding_get_pointer_option(b, name, #type), type)
 164 NTSTATUS _dcerpc_binding_set_pointer_option(struct dcerpc_binding *b,
 165                                             const char *name,
 166                                             const char *type,
 167                                             const void *vp);
 168 #define dcerpc_binding_set_pointer_option(b, name, type, vp) \
 169         _dcerpc_binding_set_pointer_option(b, name, #type, vp)
 170 uint32_t dcerpc_binding_get_flags(const struct dcerpc_binding *b);
 171 NTSTATUS dcerpc_binding_set_flags(struct dcerpc_binding *b,
 172                                   uint32_t additional,
 173                                   uint32_t clear);
 174 NTSTATUS dcerpc_floor_get_lhs_data(const struct epm_floor *epm_floor, struct ndr_syntax_id *syntax);
 175 const char *derpc_transport_string_by_transport(enum dcerpc_transport_t t);
 176 enum dcerpc_transport_t dcerpc_transport_by_name(const char *name);
 177 enum dcerpc_transport_t dcerpc_transport_by_tower(const struct epm_tower *tower);
 178
 179 /* The following definitions come from ../librpc/rpc/dcerpc_util.c  */
 180
 181 void dcerpc_set_frag_length(DATA_BLOB *blob, uint16_t v);
 182 uint16_t dcerpc_get_frag_length(const DATA_BLOB *blob);
 183 void dcerpc_set_auth_length(DATA_BLOB *blob, uint16_t v);
 184 uint16_t dcerpc_get_auth_length(const DATA_BLOB *blob);
 185 uint8_t dcerpc_get_endian_flag(DATA_BLOB *blob);
 186 uint8_t dcerpc_get_auth_type(const DATA_BLOB *blob);
 187 uint8_t dcerpc_get_auth_level(const DATA_BLOB *blob);
 188 uint32_t dcerpc_get_auth_context_id(const DATA_BLOB *blob);
 189 const char *dcerpc_default_transport_endpoint(TALLOC_CTX *mem_ctx,
 190                                               enum dcerpc_transport_t transport,
 191                                               const struct ndr_interface_table *table);
 192
 193 NTSTATUS dcerpc_pull_ncacn_packet(TALLOC_CTX *mem_ctx,
 194                                   const DATA_BLOB *blob,
 195                                   struct ncacn_packet *r);
 196
 197 /**
 198 * @brief        Pull a dcerpc_auth structure, taking account of any auth
 199 *               padding in the blob. For request/response packets we pass
 200 *               the whole data blob, so auth_data_only must be set to false
 201 *               as the blob contains data+pad+auth and no just pad+auth.
 202 *
 203 * @param pkt            - The ncacn_packet strcuture
 204 * @param mem_ctx        - The mem_ctx used to allocate dcerpc_auth elements
 205 * @param pkt_trailer    - The packet trailer data, usually the trailing
 206 *                         auth_info blob, but in the request/response case
 207 *                         this is the stub_and_verifier blob.
 208 * @param auth           - A preallocated dcerpc_auth *empty* structure
 209 * @param auth_length    - The length of the auth trail, sum of auth header
 210 *                         lenght and pkt->auth_length
 211 * @param auth_data_only - Whether the pkt_trailer includes only the auth_blob
 212 *                         (+ padding) or also other data.
 213 *
 214 * @return               - A NTSTATUS error code.
 215 */
 216 NTSTATUS dcerpc_pull_auth_trailer(const struct ncacn_packet *pkt,
 217                                   TALLOC_CTX *mem_ctx,
 218                                   const DATA_BLOB *pkt_trailer,
 219                                   struct dcerpc_auth *auth,
 220                                   uint32_t *auth_length,
 221                                   bool auth_data_only);
 222 NTSTATUS dcerpc_verify_ncacn_packet_header(const struct ncacn_packet *pkt,
 223                                            enum dcerpc_pkt_type ptype,
 224                                            size_t max_auth_info,
 225                                            uint8_t required_flags,
 226                                            uint8_t optional_flags);
 227 NTSTATUS dcerpc_ncacn_pull_pkt_auth(const struct dcerpc_auth *auth_state,
 228                                     struct gensec_security *gensec,
 229                                     TALLOC_CTX *mem_ctx,
 230                                     enum dcerpc_pkt_type ptype,
 231                                     uint8_t required_flags,
 232                                     uint8_t optional_flags,
 233                                     uint8_t payload_offset,
 234                                     DATA_BLOB *payload_and_verifier,
 235                                     DATA_BLOB *raw_packet,
 236                                     const struct ncacn_packet *pkt);
 237 NTSTATUS dcerpc_ncacn_push_pkt_auth(const struct dcerpc_auth *auth_state,
 238                                     struct gensec_security *gensec,
 239                                     TALLOC_CTX *mem_ctx,
 240                                     DATA_BLOB *raw_packet,
 241                                     size_t sig_size,
 242                                     uint8_t payload_offset,
 243                                     const DATA_BLOB *payload,
 244                                     const struct ncacn_packet *pkt);
 245 struct tevent_req *dcerpc_read_ncacn_packet_send(TALLOC_CTX *mem_ctx,
 246                                                  struct tevent_context *ev,
 247                                                  struct tstream_context *stream);
 248 NTSTATUS dcerpc_read_ncacn_packet_recv(struct tevent_req *req,
 249                                        TALLOC_CTX *mem_ctx,
 250                                        struct ncacn_packet **pkt,
 251                                        DATA_BLOB *buffer);
 252
 253 /* The following definitions come from ../librpc/rpc/binding_handle.c  */
 254
 255 struct dcerpc_binding_handle_ops {
 256         const char *name;
 257
 258         bool (*is_connected)(struct dcerpc_binding_handle *h);
 259         uint32_t (*set_timeout)(struct dcerpc_binding_handle *h,
 260                                 uint32_t timeout);
 261
 262         void (*auth_info)(struct dcerpc_binding_handle *h,
 263                           enum dcerpc_AuthType *auth_type,
 264                           enum dcerpc_AuthLevel *auth_level);
 265
 266         struct tevent_req *(*raw_call_send)(TALLOC_CTX *mem_ctx,
 267                                             struct tevent_context *ev,
 268                                             struct dcerpc_binding_handle *h,
 269                                             const struct GUID *object,
 270                                             uint32_t opnum,
 271                                             uint32_t in_flags,
 272                                             const uint8_t *in_data,
 273                                             size_t in_length);
 274         NTSTATUS (*raw_call_recv)(struct tevent_req *req,
 275                                   TALLOC_CTX *mem_ctx,
 276                                   uint8_t **out_data,
 277                                   size_t *out_length,
 278                                   uint32_t *out_flags);
 279
 280         struct tevent_req *(*disconnect_send)(TALLOC_CTX *mem_ctx,
 281                                               struct tevent_context *ev,
 282                                               struct dcerpc_binding_handle *h);
 283         NTSTATUS (*disconnect_recv)(struct tevent_req *req);
 284
 285         /* TODO: remove the following functions */
 286         bool (*push_bigendian)(struct dcerpc_binding_handle *h);
 287         bool (*ref_alloc)(struct dcerpc_binding_handle *h);
 288         bool (*use_ndr64)(struct dcerpc_binding_handle *h);
 289         void (*do_ndr_print)(struct dcerpc_binding_handle *h,
 290                              int ndr_flags,
 291                              const void *struct_ptr,
 292                              const struct ndr_interface_call *call);
 293         void (*ndr_push_failed)(struct dcerpc_binding_handle *h,
 294                                 NTSTATUS error,
 295                                 const void *struct_ptr,
 296                                 const struct ndr_interface_call *call);
 297         void (*ndr_pull_failed)(struct dcerpc_binding_handle *h,
 298                                 NTSTATUS error,
 299                                 const DATA_BLOB *blob,
 300                                 const struct ndr_interface_call *call);
 301         NTSTATUS (*ndr_validate_in)(struct dcerpc_binding_handle *h,
 302                                     TALLOC_CTX *mem_ctx,
 303                                     const DATA_BLOB *blob,
 304                                     const struct ndr_interface_call *call);
 305         NTSTATUS (*ndr_validate_out)(struct dcerpc_binding_handle *h,
 306                                      struct ndr_pull *pull_in,
 307                                      const void *struct_ptr,
 308                                      const struct ndr_interface_call *call);
 309 };
 310
 311 struct dcerpc_binding_handle *_dcerpc_binding_handle_create(TALLOC_CTX *mem_ctx,
 312                                         const struct dcerpc_binding_handle_ops *ops,
 313                                         const struct GUID *object,
 314                                         const struct ndr_interface_table *table,
 315                                         void *pstate,
 316                                         size_t psize,
 317                                         const char *type,
 318                                         const char *location);
 319 #define dcerpc_binding_handle_create(mem_ctx, ops, object, table, \
 320                                 state, type, location) \
 321         _dcerpc_binding_handle_create(mem_ctx, ops, object, table, \
 322                                 state, sizeof(type), #type, location)
 323
 324 void *_dcerpc_binding_handle_data(struct dcerpc_binding_handle *h);
 325 #define dcerpc_binding_handle_data(_h, _type) \
 326         talloc_get_type_abort(_dcerpc_binding_handle_data(_h), _type)
 327
 328 _DEPRECATED_ void dcerpc_binding_handle_set_sync_ev(struct dcerpc_binding_handle *h,
 329                                                     struct tevent_context *ev);
 330
 331 bool dcerpc_binding_handle_is_connected(struct dcerpc_binding_handle *h);
 332
 333 uint32_t dcerpc_binding_handle_set_timeout(struct dcerpc_binding_handle *h,
 334                                            uint32_t timeout);
 335
 336 void dcerpc_binding_handle_auth_info(struct dcerpc_binding_handle *h,
 337                                      enum dcerpc_AuthType *auth_type,
 338                                      enum dcerpc_AuthLevel *auth_level);
 339
 340 struct tevent_req *dcerpc_binding_handle_raw_call_send(TALLOC_CTX *mem_ctx,
 341                                                 struct tevent_context *ev,
 342                                                 struct dcerpc_binding_handle *h,
 343                                                 const struct GUID *object,
 344                                                 uint32_t opnum,
 345                                                 uint32_t in_flags,
 346                                                 const uint8_t *in_data,
 347                                                 size_t in_length);
 348 NTSTATUS dcerpc_binding_handle_raw_call_recv(struct tevent_req *req,
 349                                              TALLOC_CTX *mem_ctx,
 350                                              uint8_t **out_data,
 351                                              size_t *out_length,
 352                                              uint32_t *out_flags);
 353 NTSTATUS dcerpc_binding_handle_raw_call(struct dcerpc_binding_handle *h,
 354                                         const struct GUID *object,
 355                                         uint32_t opnum,
 356                                         uint32_t in_flags,
 357                                         const uint8_t *in_data,
 358                                         size_t in_length,
 359                                         TALLOC_CTX *mem_ctx,
 360                                         uint8_t **out_data,
 361                                         size_t *out_length,
 362                                         uint32_t *out_flags);
 363
 364 struct tevent_req *dcerpc_binding_handle_disconnect_send(TALLOC_CTX *mem_ctx,
 365                                                 struct tevent_context *ev,
 366                                                 struct dcerpc_binding_handle *h);
 367 NTSTATUS dcerpc_binding_handle_disconnect_recv(struct tevent_req *req);
 368
 369 struct tevent_req *dcerpc_binding_handle_call_send(TALLOC_CTX *mem_ctx,
 370                                         struct tevent_context *ev,
 371                                         struct dcerpc_binding_handle *h,
 372                                         const struct GUID *object,
 373                                         const struct ndr_interface_table *table,
 374                                         uint32_t opnum,
 375                                         TALLOC_CTX *r_mem,
 376                                         void *r_ptr);
 377 NTSTATUS dcerpc_binding_handle_call_recv(struct tevent_req *req);
 378 NTSTATUS dcerpc_binding_handle_call(struct dcerpc_binding_handle *h,
 379                                     const struct GUID *object,
 380                                     const struct ndr_interface_table *table,
 381                                     uint32_t opnum,
 382                                     TALLOC_CTX *r_mem,
 383                                     void *r_ptr);
 384
 385 /**
 386  * Extract header information from a ncacn_packet
 387  * as a dcerpc_sec_vt_header2 as used by the security verification trailer.
 388  *
 389  * @param[in] pkt a packet
 390  *
 391  * @return a dcerpc_sec_vt_header2
 392  */
 393 struct dcerpc_sec_vt_header2 dcerpc_sec_vt_header2_from_ncacn_packet(const struct ncacn_packet *pkt);
 394
 395
 396 /**
 397  * Test if two dcerpc_sec_vt_header2 structures are equal
 398  * without consideration of reserved fields.
 399  *
 400  * @param v1 a pointer to a dcerpc_sec_vt_header2 structure
 401  * @param v2 a pointer to a dcerpc_sec_vt_header2 structure
 402  *
 403  * @retval true if *v1 equals *v2
 404  */
 405 bool dcerpc_sec_vt_header2_equal(const struct dcerpc_sec_vt_header2 *v1,
 406                                  const struct dcerpc_sec_vt_header2 *v2);
 407
 408 /**
 409  * Check for consistency of the security verification trailer with the PDU header.
 410  * See <a href="http://msdn.microsoft.com/en-us/library/cc243559.aspx">MS-RPCE 2.2.2.13</a>.
 411  * A check with an empty trailer succeeds.
 412  *
 413  * @param[in] vt a pointer to the security verification trailer.
 414  * @param[in] bitmask1 which flags were negotiated on the connection.
 415  * @param[in] pcontext the syntaxes negotiatied for the presentation context.
 416  * @param[in] header2 some fields from the PDU header.
 417  *
 418  * @retval true on success.
 419  */
 420 bool dcerpc_sec_verification_trailer_check(
 421                 const struct dcerpc_sec_verification_trailer *vt,
 422                 const uint32_t *bitmask1,
 423                 const struct dcerpc_sec_vt_pcontext *pcontext,
 424                 const struct dcerpc_sec_vt_header2 *header2);
 425
 426 /**
 427  * @brief check and optionally extract the Bind Time Features from
 428  * the given ndr_syntax_id.
 429  *
 430  * <a href="http://msdn.microsoft.com/en-us/library/cc243715.aspx">MS-RPCE 3.3.1.5.3 Bind Time Feature Negotiation</a>.
 431  *
 432  * @param[in]  s the syntax that should be checked.
 433  *
 434  * @param[out] features This is optional, it will be filled with the extracted
 435  *                      features the on success, otherwise it's filled with 0.
 436  *
 437  * @return true if the syntax matches the 6CB71C2C-9812-4540 prefix with version 1, false otherwise.
 438  *
 439  * @see dcerpc_construct_bind_time_features
 440  */
 441 bool dcerpc_extract_bind_time_features(struct ndr_syntax_id syntax, uint64_t *features);
 442
 443 /**
 444  * @brief Construct a ndr_syntax_id used for Bind Time Features Negotiation.
 445  *
 446  * <a href="http://msdn.microsoft.com/en-us/library/cc243715.aspx">MS-RPCE 3.3.1.5.3 Bind Time Feature Negotiation</a>.
 447  *
 448  * @param[in] features The supported features.
 449  *
 450  * @return The ndr_syntax_id with the given features.
 451  *
 452  * @see dcerpc_extract_bind_time_features
 453  */
 454 struct ndr_syntax_id dcerpc_construct_bind_time_features(uint64_t features);
 455
 456 #define DCERPC_AUTH_PAD_LENGTH(stub_length) (\
 457         (((stub_length) % DCERPC_AUTH_PAD_ALIGNMENT) > 0)?\
 458         (DCERPC_AUTH_PAD_ALIGNMENT - (stub_length) % DCERPC_AUTH_PAD_ALIGNMENT):\
 459         0)
 460
 461 struct dcerpc_pipe_handle_connection *dcerpc_pipe_handle_connection_create(
 462                                         TALLOC_CTX *mem_ctx,
 463                                         const char *chunk_struct_name,
 464                                         size_t chunk_struct_size);
 465 bool _dcerpc_pipe_handle_connection_connect(
 466                                 struct dcerpc_pipe_handle_connection *pc,
 467                                 const char *chunk_struct_name,
 468                                 size_t chunk_struct_size,
 469                                 struct dcerpc_pipe_handle *p,
 470                                 bool push);
 471 #define dcerpc_pipe_handle_connection_push_connect(pc, csn, css, p) \
 472         _dcerpc_pipe_handle_connection_connect(pc, csn, css, p, true)
 473 #define dcerpc_pipe_handle_connection_pull_connect(pc, csn, css, p) \
 474         _dcerpc_pipe_handle_connection_connect(pc, csn, css, p, false)
 475 void dcerpc_pipe_handle_connection_disconnect(
 476                                 struct dcerpc_pipe_handle_connection *pc);
 477
 478 struct dcerpc_pipe_handle_ops {
 479         const char *name;
 480
 481         struct tevent_req *(*chunk_push_send)(TALLOC_CTX *mem_ctx,
 482                                             struct tevent_context *ev,
 483                                             struct dcerpc_pipe_handle *p,
 484                                             const void *chunk_ptr);
 485         NTSTATUS (*chunk_push_recv)(struct tevent_req *req);
 486
 487         struct tevent_req *(*chunk_pull_send)(TALLOC_CTX *mem_ctx,
 488                                             struct tevent_context *ev,
 489                                             struct dcerpc_pipe_handle *p,
 490                                             void *chunk_mem,
 491                                             void *chunk_ptr);
 492         NTSTATUS (*chunk_pull_recv)(struct tevent_req *req);
 493 };
 494
 495 struct dcerpc_pipe_handle *_dcerpc_pipe_handle_create(
 496                                         TALLOC_CTX *mem_ctx,
 497                                         const struct dcerpc_pipe_handle_ops *ops,
 498                                         void *pstate,
 499                                         size_t psize,
 500                                         const char *type,
 501                                         const char *location);
 502 #define dcerpc_pipe_handle_create(mem_ctx, ops, \
 503                                   state, type) \
 504         _dcerpc_pipe_handle_create(mem_ctx, ops, \
 505                                 state, sizeof(type), #type, __location__)
 506
 507 void *_dcerpc_pipe_handle_data(struct dcerpc_pipe_handle *p);
 508 #define dcerpc_pipe_handle_data(_p, _type) \
 509         talloc_get_type_abort(_dcerpc_pipe_handle_data(_p), _type)
 510
 511 struct tevent_req *dcerpc_pipe_handle_push_send(TALLOC_CTX *mem_ctx,
 512                                         struct tevent_context *ev,
 513                                         struct dcerpc_pipe_handle_connection *pc,
 514                                         const void *chunk_ptr);
 515 NTSTATUS dcerpc_pipe_handle_push_recv(struct tevent_req *req);
 516
 517 struct tevent_req *dcerpc_pipe_handle_pull_send(TALLOC_CTX *mem_ctx,
 518                                         struct tevent_context *ev,
 519                                         struct dcerpc_pipe_handle_connection *pc,
 520                                         void *chunk_mem,
 521                                         void *chunk_ptr);
 522 NTSTATUS dcerpc_pipe_handle_pull_recv(struct tevent_req *req);
 523
 524 #endif /* __DEFAULT_LIBRPC_RPCCOMMON_H__ */