rpc_message.c 61.2 KB
Newer Older
1 2 3
/*
 * RPC messages
 *
4
 * Copyright 2001-2002 Ove Kåven, TransGaming Technologies
5
 * Copyright 2004 Filip Navara
6
 * Copyright 2006 CodeWeavers
7 8 9 10 11 12 13 14 15 16 17 18 19
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
20
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
21 22
 */

23
#include <stdarg.h>
24 25 26 27 28 29
#include <stdio.h>
#include <string.h>

#include "windef.h"
#include "winbase.h"
#include "winerror.h"
30
#include "winuser.h"
31 32

#include "rpc.h"
33
#include "rpcndr.h"
34 35 36 37 38 39
#include "rpcdcep.h"

#include "wine/debug.h"

#include "rpc_binding.h"
#include "rpc_defs.h"
40
#include "rpc_message.h"
41
#include "ncastatus.h"
42

43
WINE_DEFAULT_DEBUG_CHANNEL(rpc);
44

45 46 47 48 49 50 51
/* note: the DCE/RPC spec says the alignment amount should be 4, but
 * MS/RPC servers seem to always use 16 */
#define AUTH_ALIGNMENT 16

/* gets the amount needed to round a value up to the specified alignment */
#define ROUND_UP_AMOUNT(value, alignment) \
    (((alignment) - (((value) % (alignment)))) % (alignment))
52
#define ROUND_UP(value, alignment) (((value) + ((alignment) - 1)) & ~((alignment)-1))
53

54 55
static RPC_STATUS I_RpcReAllocateBuffer(PRPC_MESSAGE pMsg);

56
DWORD RPCRT4_GetHeaderSize(const RpcPktHdr *Header)
57 58 59 60 61
{
  static const DWORD header_sizes[] = {
    sizeof(Header->request), 0, sizeof(Header->response),
    sizeof(Header->fault), 0, 0, 0, 0, 0, 0, 0, sizeof(Header->bind),
    sizeof(Header->bind_ack), sizeof(Header->bind_nack),
62
    0, 0, sizeof(Header->auth3), 0, 0, 0, sizeof(Header->http)
63 64 65 66 67 68
  };
  ULONG ret = 0;
  
  if (Header->common.ptype < sizeof(header_sizes) / sizeof(header_sizes[0])) {
    ret = header_sizes[Header->common.ptype];
    if (ret == 0)
69
      FIXME("unhandled packet type %u\n", Header->common.ptype);
70 71 72
    if (Header->common.flags & RPC_FLG_OBJECT_UUID)
      ret += sizeof(UUID);
  } else {
73
    WARN("invalid packet type %u\n", Header->common.ptype);
74 75 76 77 78
  }

  return ret;
}

79
static BOOL packet_has_body(const RpcPktHdr *Header)
80 81 82 83 84 85
{
    return (Header->common.ptype == PKT_FAULT) ||
           (Header->common.ptype == PKT_REQUEST) ||
           (Header->common.ptype == PKT_RESPONSE);
}

86
static BOOL packet_has_auth_verifier(const RpcPktHdr *Header)
87 88 89 90 91
{
    return !(Header->common.ptype == PKT_BIND_NACK) &&
           !(Header->common.ptype == PKT_SHUTDOWN);
}

92
static BOOL packet_does_auth_negotiation(const RpcPktHdr *Header)
93 94 95 96 97 98 99 100 101 102 103 104 105 106
{
    switch (Header->common.ptype)
    {
    case PKT_BIND:
    case PKT_BIND_ACK:
    case PKT_AUTH3:
    case PKT_ALTER_CONTEXT:
    case PKT_ALTER_CONTEXT_RESP:
        return TRUE;
    default:
        return FALSE;
    }
}

107
static VOID RPCRT4_BuildCommonHeader(RpcPktHdr *Header, unsigned char PacketType,
108
                                     ULONG DataRepresentation)
109 110 111 112 113 114 115 116 117 118 119 120 121 122
{
  Header->common.rpc_ver = RPC_VER_MAJOR;
  Header->common.rpc_ver_minor = RPC_VER_MINOR;
  Header->common.ptype = PacketType;
  Header->common.drep[0] = LOBYTE(LOWORD(DataRepresentation));
  Header->common.drep[1] = HIBYTE(LOWORD(DataRepresentation));
  Header->common.drep[2] = LOBYTE(HIWORD(DataRepresentation));
  Header->common.drep[3] = HIBYTE(HIWORD(DataRepresentation));
  Header->common.auth_len = 0;
  Header->common.call_id = 1;
  Header->common.flags = 0;
  /* Flags and fragment length are computed in RPCRT4_Send. */
}                              

123 124
static RpcPktHdr *RPCRT4_BuildRequestHeader(ULONG DataRepresentation,
                                     ULONG BufferLength,
125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152
                                     unsigned short ProcNum,
                                     UUID *ObjectUuid)
{
  RpcPktHdr *header;
  BOOL has_object;
  RPC_STATUS status;

  has_object = (ObjectUuid != NULL && !UuidIsNil(ObjectUuid, &status));
  header = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
                     sizeof(header->request) + (has_object ? sizeof(UUID) : 0));
  if (header == NULL) {
    return NULL;
  }

  RPCRT4_BuildCommonHeader(header, PKT_REQUEST, DataRepresentation);
  header->common.frag_len = sizeof(header->request);
  header->request.alloc_hint = BufferLength;
  header->request.context_id = 0;
  header->request.opnum = ProcNum;
  if (has_object) {
    header->common.flags |= RPC_FLG_OBJECT_UUID;
    header->common.frag_len += sizeof(UUID);
    memcpy(&header->request + 1, ObjectUuid, sizeof(UUID));
  }

  return header;
}

153
RpcPktHdr *RPCRT4_BuildResponseHeader(ULONG DataRepresentation, ULONG BufferLength)
154 155 156 157 158 159 160 161 162 163 164 165 166 167 168
{
  RpcPktHdr *header;

  header = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(header->response));
  if (header == NULL) {
    return NULL;
  }

  RPCRT4_BuildCommonHeader(header, PKT_RESPONSE, DataRepresentation);
  header->common.frag_len = sizeof(header->response);
  header->response.alloc_hint = BufferLength;

  return header;
}

169
RpcPktHdr *RPCRT4_BuildFaultHeader(ULONG DataRepresentation, RPC_STATUS Status)
170 171 172 173 174 175 176 177 178 179 180 181 182 183 184
{
  RpcPktHdr *header;

  header = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(header->fault));
  if (header == NULL) {
    return NULL;
  }

  RPCRT4_BuildCommonHeader(header, PKT_FAULT, DataRepresentation);
  header->common.frag_len = sizeof(header->fault);
  header->fault.status = Status;

  return header;
}

185
RpcPktHdr *RPCRT4_BuildBindHeader(ULONG DataRepresentation,
186 187
                                  unsigned short MaxTransmissionSize,
                                  unsigned short MaxReceiveSize,
188
                                  ULONG  AssocGroupId,
189 190
                                  const RPC_SYNTAX_IDENTIFIER *AbstractId,
                                  const RPC_SYNTAX_IDENTIFIER *TransferId)
191 192
{
  RpcPktHdr *header;
193
  RpcContextElement *ctxt_elem;
194

195 196
  header = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
                     sizeof(header->bind) + FIELD_OFFSET(RpcContextElement, transfer_syntaxes[1]));
197 198 199
  if (header == NULL) {
    return NULL;
  }
200
  ctxt_elem = (RpcContextElement *)(&header->bind + 1);
201 202

  RPCRT4_BuildCommonHeader(header, PKT_BIND, DataRepresentation);
203
  header->common.frag_len = sizeof(header->bind) + FIELD_OFFSET(RpcContextElement, transfer_syntaxes[1]);
204 205
  header->bind.max_tsize = MaxTransmissionSize;
  header->bind.max_rsize = MaxReceiveSize;
206
  header->bind.assoc_gid = AssocGroupId;
207
  header->bind.num_elements = 1;
208 209 210
  ctxt_elem->num_syntaxes = 1;
  ctxt_elem->abstract_syntax = *AbstractId;
  ctxt_elem->transfer_syntaxes[0] = *TransferId;
211 212 213 214

  return header;
}

215
static RpcPktHdr *RPCRT4_BuildAuthHeader(ULONG DataRepresentation)
216 217 218 219
{
  RpcPktHdr *header;

  header = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
220
                     sizeof(header->auth3));
221 222 223 224
  if (header == NULL)
    return NULL;

  RPCRT4_BuildCommonHeader(header, PKT_AUTH3, DataRepresentation);
225
  header->common.frag_len = sizeof(header->auth3);
226 227 228 229

  return header;
}

230
RpcPktHdr *RPCRT4_BuildBindNackHeader(ULONG DataRepresentation,
231
                                      unsigned char RpcVersion,
232 233
                                      unsigned char RpcVersionMinor,
                                      unsigned short RejectReason)
234 235 236
{
  RpcPktHdr *header;

237
  header = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, FIELD_OFFSET(RpcPktHdr, bind_nack.protocols[1]));
238 239 240 241 242
  if (header == NULL) {
    return NULL;
  }

  RPCRT4_BuildCommonHeader(header, PKT_BIND_NACK, DataRepresentation);
243
  header->common.frag_len = FIELD_OFFSET(RpcPktHdr, bind_nack.protocols[1]);
244
  header->bind_nack.reject_reason = RejectReason;
245 246 247 248 249 250 251
  header->bind_nack.protocols_count = 1;
  header->bind_nack.protocols[0].rpc_ver = RpcVersion;
  header->bind_nack.protocols[0].rpc_ver_minor = RpcVersionMinor;

  return header;
}

252
RpcPktHdr *RPCRT4_BuildBindAckHeader(ULONG DataRepresentation,
253 254
                                     unsigned short MaxTransmissionSize,
                                     unsigned short MaxReceiveSize,
255
                                     ULONG AssocGroupId,
256
                                     LPCSTR ServerAddress,
257 258
                                     unsigned char ResultCount,
                                     const RpcResult *Results)
259 260
{
  RpcPktHdr *header;
261
  ULONG header_size;
262
  RpcAddressString *server_address;
263
  RpcResultList *results;
264

265 266
  header_size = sizeof(header->bind_ack) +
                ROUND_UP(FIELD_OFFSET(RpcAddressString, string[strlen(ServerAddress) + 1]), 4) +
267
                FIELD_OFFSET(RpcResultList, results[ResultCount]);
268 269 270 271 272 273 274 275 276 277

  header = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, header_size);
  if (header == NULL) {
    return NULL;
  }

  RPCRT4_BuildCommonHeader(header, PKT_BIND_ACK, DataRepresentation);
  header->common.frag_len = header_size;
  header->bind_ack.max_tsize = MaxTransmissionSize;
  header->bind_ack.max_rsize = MaxReceiveSize;
278
  header->bind_ack.assoc_gid = AssocGroupId;
279 280 281
  server_address = (RpcAddressString*)(&header->bind_ack + 1);
  server_address->length = strlen(ServerAddress) + 1;
  strcpy(server_address->string, ServerAddress);
282
  /* results is 4-byte aligned */
283 284 285
  results = (RpcResultList*)((ULONG_PTR)server_address + ROUND_UP(FIELD_OFFSET(RpcAddressString, string[server_address->length]), 4));
  results->num_results = ResultCount;
  memcpy(&results->results[0], Results, ResultCount * sizeof(*Results));
286 287 288 289

  return header;
}

290
RpcPktHdr *RPCRT4_BuildHttpHeader(ULONG DataRepresentation,
291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342
                                  unsigned short flags,
                                  unsigned short num_data_items,
                                  unsigned int payload_size)
{
  RpcPktHdr *header;

  header = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(header->http) + payload_size);
  if (header == NULL) {
      ERR("failed to allocate memory\n");
    return NULL;
  }

  RPCRT4_BuildCommonHeader(header, PKT_HTTP, DataRepresentation);
  /* since the packet isn't current sent using RPCRT4_Send, set the flags
   * manually here */
  header->common.flags = RPC_FLG_FIRST|RPC_FLG_LAST;
  header->common.call_id = 0;
  header->common.frag_len = sizeof(header->http) + payload_size;
  header->http.flags = flags;
  header->http.num_data_items = num_data_items;

  return header;
}

#define WRITE_HTTP_PAYLOAD_FIELD_UINT32(payload, type, value) \
    do { \
        *(unsigned int *)(payload) = (type); \
        (payload) += 4; \
        *(unsigned int *)(payload) = (value); \
        (payload) += 4; \
    } while (0)

#define WRITE_HTTP_PAYLOAD_FIELD_UUID(payload, type, uuid) \
    do { \
        *(unsigned int *)(payload) = (type); \
        (payload) += 4; \
        *(UUID *)(payload) = (uuid); \
        (payload) += sizeof(UUID); \
    } while (0)

#define WRITE_HTTP_PAYLOAD_FIELD_FLOW_CONTROL(payload, bytes_transmitted, flow_control_increment, uuid) \
    do { \
        *(unsigned int *)(payload) = 0x00000001; \
        (payload) += 4; \
        *(unsigned int *)(payload) = (bytes_transmitted); \
        (payload) += 4; \
        *(unsigned int *)(payload) = (flow_control_increment); \
        (payload) += 4; \
        *(UUID *)(payload) = (uuid); \
        (payload) += sizeof(UUID); \
    } while (0)

343
RpcPktHdr *RPCRT4_BuildHttpConnectHeader(int out_pipe,
344 345 346 347 348 349 350 351 352 353 354 355
                                         const UUID *connection_uuid,
                                         const UUID *pipe_uuid,
                                         const UUID *association_uuid)
{
  RpcPktHdr *header;
  unsigned int size;
  char *payload;

  size = 8 + 4 + sizeof(UUID) + 4 + sizeof(UUID) + 8;
  if (!out_pipe)
    size += 8 + 4 + sizeof(UUID);

356
  header = RPCRT4_BuildHttpHeader(NDR_LOCAL_DATA_REPRESENTATION, 0,
357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401
                                  out_pipe ? 4 : 6, size);
  if (!header) return NULL;
  payload = (char *)(&header->http+1);

  /* FIXME: what does this part of the payload do? */
  WRITE_HTTP_PAYLOAD_FIELD_UINT32(payload, 0x00000006, 0x00000001);

  WRITE_HTTP_PAYLOAD_FIELD_UUID(payload, 0x00000003, *connection_uuid);
  WRITE_HTTP_PAYLOAD_FIELD_UUID(payload, 0x00000003, *pipe_uuid);

  if (out_pipe)
    /* FIXME: what does this part of the payload do? */
    WRITE_HTTP_PAYLOAD_FIELD_UINT32(payload, 0x00000000, 0x00010000);
  else
  {
    /* FIXME: what does this part of the payload do? */
    WRITE_HTTP_PAYLOAD_FIELD_UINT32(payload, 0x00000004, 0x40000000);
    /* FIXME: what does this part of the payload do? */
    WRITE_HTTP_PAYLOAD_FIELD_UINT32(payload, 0x00000005, 0x000493e0);

    WRITE_HTTP_PAYLOAD_FIELD_UUID(payload, 0x0000000c, *association_uuid);
  }

  return header;
}

RpcPktHdr *RPCRT4_BuildHttpFlowControlHeader(BOOL server, ULONG bytes_transmitted,
                                             ULONG flow_control_increment,
                                             const UUID *pipe_uuid)
{
  RpcPktHdr *header;
  char *payload;

  header = RPCRT4_BuildHttpHeader(NDR_LOCAL_DATA_REPRESENTATION, 0x2, 2,
                                  5 * sizeof(ULONG) + sizeof(UUID));
  if (!header) return NULL;
  payload = (char *)(&header->http+1);

  WRITE_HTTP_PAYLOAD_FIELD_UINT32(payload, 0x0000000d, (server ? 0x0 : 0x3));

  WRITE_HTTP_PAYLOAD_FIELD_FLOW_CONTROL(payload, bytes_transmitted,
                                        flow_control_increment, *pipe_uuid);
  return header;
}

402 403 404 405 406
VOID RPCRT4_FreeHeader(RpcPktHdr *Header)
{
  HeapFree(GetProcessHeap(), 0, Header);
}

407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423
NCA_STATUS RPC2NCA_STATUS(RPC_STATUS status)
{
    switch (status)
    {
    case ERROR_INVALID_HANDLE:              return NCA_S_FAULT_CONTEXT_MISMATCH;
    case ERROR_OUTOFMEMORY:                 return NCA_S_FAULT_REMOTE_NO_MEMORY;
    case RPC_S_NOT_LISTENING:               return NCA_S_SERVER_TOO_BUSY;
    case RPC_S_UNKNOWN_IF:                  return NCA_S_UNK_IF;
    case RPC_S_SERVER_TOO_BUSY:             return NCA_S_SERVER_TOO_BUSY;
    case RPC_S_CALL_FAILED:                 return NCA_S_FAULT_UNSPEC;
    case RPC_S_CALL_FAILED_DNE:             return NCA_S_MANAGER_NOT_ENTERED;
    case RPC_S_PROTOCOL_ERROR:              return NCA_S_PROTO_ERROR;
    case RPC_S_UNSUPPORTED_TYPE:            return NCA_S_UNSUPPORTED_TYPE;
    case RPC_S_INVALID_TAG:                 return NCA_S_FAULT_INVALID_TAG;
    case RPC_S_INVALID_BOUND:               return NCA_S_FAULT_INVALID_BOUND;
    case RPC_S_PROCNUM_OUT_OF_RANGE:        return NCA_S_OP_RNG_ERROR;
    case RPC_X_SS_HANDLES_MISMATCH:         return NCA_S_FAULT_CONTEXT_MISMATCH;
424 425 426 427 428 429
    case RPC_S_CALL_CANCELLED:              return NCA_S_FAULT_CANCEL;
    case RPC_S_COMM_FAILURE:                return NCA_S_COMM_FAILURE;
    case RPC_X_WRONG_PIPE_ORDER:            return NCA_S_FAULT_PIPE_ORDER;
    case RPC_X_PIPE_CLOSED:                 return NCA_S_FAULT_PIPE_CLOSED;
    case RPC_X_PIPE_DISCIPLINE_ERROR:       return NCA_S_FAULT_PIPE_DISCIPLINE;
    case RPC_X_PIPE_EMPTY:                  return NCA_S_FAULT_PIPE_EMPTY;
430 431 432 433 434 435 436 437 438 439
    case STATUS_FLOAT_DIVIDE_BY_ZERO:       return NCA_S_FAULT_FP_DIV_ZERO;
    case STATUS_FLOAT_INVALID_OPERATION:    return NCA_S_FAULT_FP_ERROR;
    case STATUS_FLOAT_OVERFLOW:             return NCA_S_FAULT_FP_OVERFLOW;
    case STATUS_FLOAT_UNDERFLOW:            return NCA_S_FAULT_FP_UNDERFLOW;
    case STATUS_INTEGER_DIVIDE_BY_ZERO:     return NCA_S_FAULT_INT_DIV_BY_ZERO;
    case STATUS_INTEGER_OVERFLOW:           return NCA_S_FAULT_INT_OVERFLOW;
    default:                                return status;
    }
}

440
static RPC_STATUS NCA2RPC_STATUS(NCA_STATUS status)
441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480
{
    switch (status)
    {
    case NCA_S_COMM_FAILURE:            return RPC_S_COMM_FAILURE;
    case NCA_S_OP_RNG_ERROR:            return RPC_S_PROCNUM_OUT_OF_RANGE;
    case NCA_S_UNK_IF:                  return RPC_S_UNKNOWN_IF;
    case NCA_S_YOU_CRASHED:             return RPC_S_CALL_FAILED;
    case NCA_S_PROTO_ERROR:             return RPC_S_PROTOCOL_ERROR;
    case NCA_S_OUT_ARGS_TOO_BIG:        return ERROR_NOT_ENOUGH_SERVER_MEMORY;
    case NCA_S_SERVER_TOO_BUSY:         return RPC_S_SERVER_TOO_BUSY;
    case NCA_S_UNSUPPORTED_TYPE:        return RPC_S_UNSUPPORTED_TYPE;
    case NCA_S_FAULT_INT_DIV_BY_ZERO:   return RPC_S_ZERO_DIVIDE;
    case NCA_S_FAULT_ADDR_ERROR:        return RPC_S_ADDRESS_ERROR;
    case NCA_S_FAULT_FP_DIV_ZERO:       return RPC_S_FP_DIV_ZERO;
    case NCA_S_FAULT_FP_UNDERFLOW:      return RPC_S_FP_UNDERFLOW;
    case NCA_S_FAULT_FP_OVERFLOW:       return RPC_S_FP_OVERFLOW;
    case NCA_S_FAULT_INVALID_TAG:       return RPC_S_INVALID_TAG;
    case NCA_S_FAULT_INVALID_BOUND:     return RPC_S_INVALID_BOUND;
    case NCA_S_RPC_VERSION_MISMATCH:    return RPC_S_PROTOCOL_ERROR;
    case NCA_S_UNSPEC_REJECT:           return RPC_S_CALL_FAILED_DNE;
    case NCA_S_BAD_ACTID:               return RPC_S_CALL_FAILED_DNE;
    case NCA_S_WHO_ARE_YOU_FAILED:      return RPC_S_CALL_FAILED;
    case NCA_S_MANAGER_NOT_ENTERED:     return RPC_S_CALL_FAILED_DNE;
    case NCA_S_FAULT_CANCEL:            return RPC_S_CALL_CANCELLED;
    case NCA_S_FAULT_ILL_INST:          return RPC_S_ADDRESS_ERROR;
    case NCA_S_FAULT_FP_ERROR:          return RPC_S_FP_OVERFLOW;
    case NCA_S_FAULT_INT_OVERFLOW:      return RPC_S_ADDRESS_ERROR;
    case NCA_S_FAULT_UNSPEC:            return RPC_S_CALL_FAILED;
    case NCA_S_FAULT_PIPE_EMPTY:        return RPC_X_PIPE_EMPTY;
    case NCA_S_FAULT_PIPE_CLOSED:       return RPC_X_PIPE_CLOSED;
    case NCA_S_FAULT_PIPE_ORDER:        return RPC_X_WRONG_PIPE_ORDER;
    case NCA_S_FAULT_PIPE_DISCIPLINE:   return RPC_X_PIPE_DISCIPLINE_ERROR;
    case NCA_S_FAULT_PIPE_COMM_ERROR:   return RPC_S_COMM_FAILURE;
    case NCA_S_FAULT_PIPE_MEMORY:       return ERROR_OUTOFMEMORY;
    case NCA_S_FAULT_CONTEXT_MISMATCH:  return ERROR_INVALID_HANDLE;
    case NCA_S_FAULT_REMOTE_NO_MEMORY:  return ERROR_NOT_ENOUGH_SERVER_MEMORY;
    default:                            return status;
    }
}

481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533
/* assumes the common header fields have already been validated */
BOOL RPCRT4_IsValidHttpPacket(RpcPktHdr *hdr, unsigned char *data,
                              unsigned short data_len)
{
  unsigned short i;
  BYTE *p = data;

  for (i = 0; i < hdr->http.num_data_items; i++)
  {
    ULONG type;

    if (data_len < sizeof(ULONG))
      return FALSE;

    type = *(ULONG *)p;
    p += sizeof(ULONG);
    data_len -= sizeof(ULONG);

    switch (type)
    {
      case 0x3:
      case 0xc:
        if (data_len < sizeof(GUID))
          return FALSE;
        p += sizeof(GUID);
        data_len -= sizeof(GUID);
        break;
      case 0x0:
      case 0x2:
      case 0x4:
      case 0x5:
      case 0x6:
      case 0xd:
        if (data_len < sizeof(ULONG))
          return FALSE;
        p += sizeof(ULONG);
        data_len -= sizeof(ULONG);
        break;
      case 0x1:
        if (data_len < 24)
          return FALSE;
        p += 24;
        data_len -= 24;
        break;
      default:
        FIXME("unimplemented type 0x%x\n", type);
        break;
    }
  }
  return TRUE;
}

/* assumes the HTTP packet has been validated */
534
static unsigned char *RPCRT4_NextHttpHeaderField(unsigned char *data)
535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680
{
  ULONG type;

  type = *(ULONG *)data;
  data += sizeof(ULONG);

  switch (type)
  {
    case 0x3:
    case 0xc:
      return data + sizeof(GUID);
    case 0x0:
    case 0x2:
    case 0x4:
    case 0x5:
    case 0x6:
    case 0xd:
      return data + sizeof(ULONG);
    case 0x1:
      return data + 24;
    default:
      FIXME("unimplemented type 0x%x\n", type);
      return data;
  }
}

#define READ_HTTP_PAYLOAD_FIELD_TYPE(data) *(ULONG *)(data)
#define GET_HTTP_PAYLOAD_FIELD_DATA(data) ((data) + sizeof(ULONG))

/* assumes the HTTP packet has been validated */
RPC_STATUS RPCRT4_ParseHttpPrepareHeader1(RpcPktHdr *header,
                                          unsigned char *data, ULONG *field1)
{
  ULONG type;
  if (header->http.flags != 0x0)
  {
    ERR("invalid flags 0x%x\n", header->http.flags);
    return RPC_S_PROTOCOL_ERROR;
  }
  if (header->http.num_data_items != 1)
  {
    ERR("invalid number of data items %d\n", header->http.num_data_items);
    return RPC_S_PROTOCOL_ERROR;
  }
  type = READ_HTTP_PAYLOAD_FIELD_TYPE(data);
  if (type != 0x00000002)
  {
    ERR("invalid type 0x%08x\n", type);
    return RPC_S_PROTOCOL_ERROR;
  }
  *field1 = *(ULONG *)GET_HTTP_PAYLOAD_FIELD_DATA(data);
  return RPC_S_OK;
}

/* assumes the HTTP packet has been validated */
RPC_STATUS RPCRT4_ParseHttpPrepareHeader2(RpcPktHdr *header,
                                          unsigned char *data, ULONG *field1,
                                          ULONG *bytes_until_next_packet,
                                          ULONG *field3)
{
  ULONG type;
  if (header->http.flags != 0x0)
  {
    ERR("invalid flags 0x%x\n", header->http.flags);
    return RPC_S_PROTOCOL_ERROR;
  }
  if (header->http.num_data_items != 3)
  {
    ERR("invalid number of data items %d\n", header->http.num_data_items);
    return RPC_S_PROTOCOL_ERROR;
  }

  type = READ_HTTP_PAYLOAD_FIELD_TYPE(data);
  if (type != 0x00000006)
  {
    ERR("invalid type for field 1: 0x%08x\n", type);
    return RPC_S_PROTOCOL_ERROR;
  }
  *field1 = *(ULONG *)GET_HTTP_PAYLOAD_FIELD_DATA(data);
  data = RPCRT4_NextHttpHeaderField(data);

  type = READ_HTTP_PAYLOAD_FIELD_TYPE(data);
  if (type != 0x00000000)
  {
    ERR("invalid type for field 2: 0x%08x\n", type);
    return RPC_S_PROTOCOL_ERROR;
  }
  *bytes_until_next_packet = *(ULONG *)GET_HTTP_PAYLOAD_FIELD_DATA(data);
  data = RPCRT4_NextHttpHeaderField(data);

  type = READ_HTTP_PAYLOAD_FIELD_TYPE(data);
  if (type != 0x00000002)
  {
    ERR("invalid type for field 3: 0x%08x\n", type);
    return RPC_S_PROTOCOL_ERROR;
  }
  *field3 = *(ULONG *)GET_HTTP_PAYLOAD_FIELD_DATA(data);

  return RPC_S_OK;
}

RPC_STATUS RPCRT4_ParseHttpFlowControlHeader(RpcPktHdr *header,
                                             unsigned char *data, BOOL server,
                                             ULONG *bytes_transmitted,
                                             ULONG *flow_control_increment,
                                             UUID *pipe_uuid)
{
  ULONG type;
  if (header->http.flags != 0x2)
  {
    ERR("invalid flags 0x%x\n", header->http.flags);
    return RPC_S_PROTOCOL_ERROR;
  }
  if (header->http.num_data_items != 2)
  {
    ERR("invalid number of data items %d\n", header->http.num_data_items);
    return RPC_S_PROTOCOL_ERROR;
  }

  type = READ_HTTP_PAYLOAD_FIELD_TYPE(data);
  if (type != 0x0000000d)
  {
    ERR("invalid type for field 1: 0x%08x\n", type);
    return RPC_S_PROTOCOL_ERROR;
  }
  if (*(ULONG *)GET_HTTP_PAYLOAD_FIELD_DATA(data) != (server ? 0x3 : 0x0))
  {
    ERR("invalid type for 0xd field data: 0x%08x\n", *(ULONG *)GET_HTTP_PAYLOAD_FIELD_DATA(data));
    return RPC_S_PROTOCOL_ERROR;
  }
  data = RPCRT4_NextHttpHeaderField(data);

  type = READ_HTTP_PAYLOAD_FIELD_TYPE(data);
  if (type != 0x00000001)
  {
    ERR("invalid type for field 2: 0x%08x\n", type);
    return RPC_S_PROTOCOL_ERROR;
  }
  *bytes_transmitted = *(ULONG *)GET_HTTP_PAYLOAD_FIELD_DATA(data);
  *flow_control_increment = *(ULONG *)(GET_HTTP_PAYLOAD_FIELD_DATA(data) + 4);
  *pipe_uuid = *(UUID *)(GET_HTTP_PAYLOAD_FIELD_DATA(data) + 8);

  return RPC_S_OK;
}


681
RPC_STATUS RPCRT4_default_secure_packet(RpcConnection *Connection,
682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736
    enum secure_packet_direction dir,
    RpcPktHdr *hdr, unsigned int hdr_size,
    unsigned char *stub_data, unsigned int stub_data_size,
    RpcAuthVerifier *auth_hdr,
    unsigned char *auth_value, unsigned int auth_value_size)
{
    SecBufferDesc message;
    SecBuffer buffers[4];
    SECURITY_STATUS sec_status;

    message.ulVersion = SECBUFFER_VERSION;
    message.cBuffers = sizeof(buffers)/sizeof(buffers[0]);
    message.pBuffers = buffers;

    buffers[0].cbBuffer = hdr_size;
    buffers[0].BufferType = SECBUFFER_DATA|SECBUFFER_READONLY_WITH_CHECKSUM;
    buffers[0].pvBuffer = hdr;
    buffers[1].cbBuffer = stub_data_size;
    buffers[1].BufferType = SECBUFFER_DATA;
    buffers[1].pvBuffer = stub_data;
    buffers[2].cbBuffer = sizeof(*auth_hdr);
    buffers[2].BufferType = SECBUFFER_DATA|SECBUFFER_READONLY_WITH_CHECKSUM;
    buffers[2].pvBuffer = auth_hdr;
    buffers[3].cbBuffer = auth_value_size;
    buffers[3].BufferType = SECBUFFER_TOKEN;
    buffers[3].pvBuffer = auth_value;

    if (dir == SECURE_PACKET_SEND)
    {
        if ((auth_hdr->auth_level == RPC_C_AUTHN_LEVEL_PKT_PRIVACY) && packet_has_body(hdr))
        {
            sec_status = EncryptMessage(&Connection->ctx, 0, &message, 0 /* FIXME */);
            if (sec_status != SEC_E_OK)
            {
                ERR("EncryptMessage failed with 0x%08x\n", sec_status);
                return RPC_S_SEC_PKG_ERROR;
            }
        }
        else if (auth_hdr->auth_level != RPC_C_AUTHN_LEVEL_NONE)
        {
            sec_status = MakeSignature(&Connection->ctx, 0, &message, 0 /* FIXME */);
            if (sec_status != SEC_E_OK)
            {
                ERR("MakeSignature failed with 0x%08x\n", sec_status);
                return RPC_S_SEC_PKG_ERROR;
            }
        }
    }
    else if (dir == SECURE_PACKET_RECEIVE)
    {
        if ((auth_hdr->auth_level == RPC_C_AUTHN_LEVEL_PKT_PRIVACY) && packet_has_body(hdr))
        {
            sec_status = DecryptMessage(&Connection->ctx, &message, 0 /* FIXME */, 0);
            if (sec_status != SEC_E_OK)
            {
737
                ERR("DecryptMessage failed with 0x%08x\n", sec_status);
738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754
                return RPC_S_SEC_PKG_ERROR;
            }
        }
        else if (auth_hdr->auth_level != RPC_C_AUTHN_LEVEL_NONE)
        {
            sec_status = VerifySignature(&Connection->ctx, &message, 0 /* FIXME */, NULL);
            if (sec_status != SEC_E_OK)
            {
                ERR("VerifySignature failed with 0x%08x\n", sec_status);
                return RPC_S_SEC_PKG_ERROR;
            }
        }
    }

    return RPC_S_OK;
}
         
755
/***********************************************************************
756
 *           RPCRT4_SendWithAuth (internal)
757
 * 
758
 * Transmit a packet with authorization data over connection in acceptable fragments.
759
 */
760 761 762
RPC_STATUS RPCRT4_SendWithAuth(RpcConnection *Connection, RpcPktHdr *Header,
                               void *Buffer, unsigned int BufferLength,
                               const void *Auth, unsigned int AuthLength)
763 764
{
  PUCHAR buffer_pos;
765 766
  DWORD hdr_size;
  LONG count;
767
  unsigned char *pkt;
768 769
  LONG alen;
  RPC_STATUS status;
770

771 772
  RPCRT4_SetThreadCurrentConnection(Connection);

773 774 775
  buffer_pos = Buffer;
  /* The packet building functions save the packet header size, so we can use it. */
  hdr_size = Header->common.frag_len;
776 777 778
  if (AuthLength)
    Header->common.auth_len = AuthLength;
  else if (Connection->AuthInfo && packet_has_auth_verifier(Header))
779 780 781
  {
    if ((Connection->AuthInfo->AuthnLevel == RPC_C_AUTHN_LEVEL_PKT_PRIVACY) && packet_has_body(Header))
      Header->common.auth_len = Connection->encryption_auth_len;
782 783
    else
      Header->common.auth_len = Connection->signature_auth_len;
784
  }
785 786
  else
    Header->common.auth_len = 0;
787 788
  Header->common.flags |= RPC_FLG_FIRST;
  Header->common.flags &= ~RPC_FLG_LAST;
789 790 791

  alen = RPC_AUTH_VERIFIER_LEN(&Header->common);

792
  while (!(Header->common.flags & RPC_FLG_LAST)) {
793
    unsigned char auth_pad_len = Header->common.auth_len ? ROUND_UP_AMOUNT(BufferLength, AUTH_ALIGNMENT) : 0;
794
    unsigned int pkt_size = BufferLength + hdr_size + alen + auth_pad_len;
795

796
    /* decide if we need to split the packet into fragments */
797 798 799
   if (pkt_size <= Connection->MaxTransmissionSize) {
     Header->common.flags |= RPC_FLG_LAST;
     Header->common.frag_len = pkt_size;
800
    } else {
801 802 803 804 805
      auth_pad_len = 0;
      /* make sure packet payload will be a multiple of 16 */
      Header->common.frag_len =
        ((Connection->MaxTransmissionSize - hdr_size - alen) & ~(AUTH_ALIGNMENT-1)) +
        hdr_size + alen;
806 807
    }

808 809 810
    pkt = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, Header->common.frag_len);

    memcpy(pkt, Header, hdr_size);
811 812

    /* fragment consisted of header only and is the last one */
813 814 815
    if (hdr_size == Header->common.frag_len)
      goto write;

816
    memcpy(pkt + hdr_size, buffer_pos, Header->common.frag_len - hdr_size - auth_pad_len - alen);
817 818

    /* add the authorization info */
819
    if (Header->common.auth_len)
820
    {
821
      RpcAuthVerifier *auth_hdr = (RpcAuthVerifier *)&pkt[Header->common.frag_len - alen];
822

823 824 825 826
      auth_hdr->auth_type = Connection->AuthInfo->AuthnSvc;
      auth_hdr->auth_level = Connection->AuthInfo->AuthnLevel;
      auth_hdr->auth_pad_length = auth_pad_len;
      auth_hdr->auth_reserved = 0;
827
      /* a unique number... */
828
      auth_hdr->auth_context_id = Connection->auth_context_id;
829

830 831 832 833
      if (AuthLength)
        memcpy(auth_hdr + 1, Auth, AuthLength);
      else
      {
834
        status = rpcrt4_conn_secure_packet(Connection, SECURE_PACKET_SEND,
835 836 837 838 839 840 841
            (RpcPktHdr *)pkt, hdr_size,
            pkt + hdr_size, Header->common.frag_len - hdr_size - alen,
            auth_hdr,
            (unsigned char *)(auth_hdr + 1), Header->common.auth_len);
        if (status != RPC_S_OK)
        {
          HeapFree(GetProcessHeap(), 0, pkt);
842
          RPCRT4_SetThreadCurrentConnection(NULL);
843 844 845
          return status;
        }
      }
846 847
    }

848 849 850
write:
    count = rpcrt4_conn_write(Connection, pkt, Header->common.frag_len);
    HeapFree(GetProcessHeap(), 0, pkt);
851
    if (count<0) {
852
      WARN("rpcrt4_conn_write failed (auth)\n");
853
      RPCRT4_SetThreadCurrentConnection(NULL);
854
      return RPC_S_CALL_FAILED;
855 856
    }

857 858
    buffer_pos += Header->common.frag_len - hdr_size - alen - auth_pad_len;
    BufferLength -= Header->common.frag_len - hdr_size - alen - auth_pad_len;
859 860 861
    Header->common.flags &= ~RPC_FLG_FIRST;
  }

862
  RPCRT4_SetThreadCurrentConnection(NULL);
863 864 865
  return RPC_S_OK;
}

866
/***********************************************************************
867
 *           RPCRT4_default_authorize (internal)
868
 *
869
 * Authorize a client connection.
870
 */
871 872 873 874 875
RPC_STATUS RPCRT4_default_authorize(RpcConnection *conn, BOOL first_time,
                                    unsigned char *in_buffer,
                                    unsigned int in_size,
                                    unsigned char *out_buffer,
                                    unsigned int *out_size)
876 877 878
{
  SECURITY_STATUS r;
  SecBufferDesc out_desc;
879
  SecBufferDesc inp_desc;
880 881
  SecPkgContext_Sizes secctx_sizes;
  BOOL continue_needed;
882
  ULONG context_req;
883 884 885 886 887 888 889
  SecBuffer in, out;

  if (!out_buffer)
  {
    *out_size = conn->AuthInfo->cbMaxToken;
    return RPC_S_OK;
  }
890

891 892 893 894 895 896 897
  in.BufferType = SECBUFFER_TOKEN;
  in.pvBuffer = in_buffer;
  in.cbBuffer = in_size;

  out.BufferType = SECBUFFER_TOKEN;
  out.pvBuffer = out_buffer;
  out.cbBuffer = *out_size;
898 899 900

  out_desc.ulVersion = 0;
  out_desc.cBuffers = 1;
901
  out_desc.pBuffers = &out;
902

903
  inp_desc.ulVersion = 0;
904 905
  inp_desc.cBuffers = 1;
  inp_desc.pBuffers = &in;
906

907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924
  if (conn->server)
  {
      context_req = ASC_REQ_CONNECTION | ASC_REQ_USE_DCE_STYLE |
                    ASC_REQ_DELEGATE;

      if (conn->AuthInfo->AuthnLevel == RPC_C_AUTHN_LEVEL_PKT_INTEGRITY)
          context_req |= ASC_REQ_INTEGRITY;
      else if (conn->AuthInfo->AuthnLevel == RPC_C_AUTHN_LEVEL_PKT_PRIVACY)
          context_req |= ASC_REQ_CONFIDENTIALITY | ASC_REQ_INTEGRITY;

      r = AcceptSecurityContext(&conn->AuthInfo->cred,
                                first_time ? NULL : &conn->ctx,
                                &inp_desc, context_req, SECURITY_NETWORK_DREP,
                                &conn->ctx,
                                &out_desc, &conn->attr, &conn->exp);
      if (r == SEC_E_OK || r == SEC_I_COMPLETE_NEEDED)
      {
          /* authorisation done, so nothing more to send */
925
          out.cbBuffer = 0;
926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941
      }
  }
  else
  {
      context_req = ISC_REQ_CONNECTION | ISC_REQ_USE_DCE_STYLE |
                    ISC_REQ_MUTUAL_AUTH | ISC_REQ_DELEGATE;

      if (conn->AuthInfo->AuthnLevel == RPC_C_AUTHN_LEVEL_PKT_INTEGRITY)
          context_req |= ISC_REQ_INTEGRITY;
      else if (conn->AuthInfo->AuthnLevel == RPC_C_AUTHN_LEVEL_PKT_PRIVACY)
          context_req |= ISC_REQ_CONFIDENTIALITY | ISC_REQ_INTEGRITY;

      r = InitializeSecurityContextW(&conn->AuthInfo->cred,
                                     first_time ? NULL: &conn->ctx,
                                     first_time ? conn->AuthInfo->server_principal_name : NULL,
                                     context_req, 0, SECURITY_NETWORK_DREP,
942
                                     first_time ? NULL : &inp_desc, 0, &conn->ctx,
943 944
                                     &out_desc, &conn->attr, &conn->exp);
  }
945 946 947
  if (FAILED(r))
  {
      WARN("InitializeSecurityContext failed with error 0x%08x\n", r);
948
      goto failed;
949
  }
950

951
  TRACE("r = 0x%08x, attr = 0x%08x\n", r, conn->attr);
952 953
  continue_needed = ((r == SEC_I_CONTINUE_NEEDED) ||
                     (r == SEC_I_COMPLETE_AND_CONTINUE));
954 955 956 957 958 959 960 961

  if ((r == SEC_I_COMPLETE_NEEDED) || (r == SEC_I_COMPLETE_AND_CONTINUE))
  {
      TRACE("complete needed\n");
      r = CompleteAuthToken(&conn->ctx, &out_desc);
      if (FAILED(r))
      {
          WARN("CompleteAuthToken failed with error 0x%08x\n", r);
962
          goto failed;
963 964 965
      }
  }

966
  TRACE("cbBuffer = %d\n", out.cbBuffer);
967

968 969 970 971 972 973 974 975 976 977 978 979
  if (!continue_needed)
  {
      r = QueryContextAttributesA(&conn->ctx, SECPKG_ATTR_SIZES, &secctx_sizes);
      if (FAILED(r))
      {
          WARN("QueryContextAttributes failed with error 0x%08x\n", r);
          goto failed;
      }
      conn->signature_auth_len = secctx_sizes.cbMaxSignature;
      conn->encryption_auth_len = secctx_sizes.cbSecurityTrailer;
  }

980
  *out_size = out.cbBuffer;
981
  return RPC_S_OK;
982 983

failed:
984
  *out_size = 0;
985
  return ERROR_ACCESS_DENIED; /* FIXME: is this correct? */
986 987 988
}

/***********************************************************************
989
 *           RPCRT4_ClientConnectionAuth (internal)
990
 */
991 992
RPC_STATUS RPCRT4_ClientConnectionAuth(RpcConnection* conn, BYTE *challenge,
                                       ULONG count)
993 994 995
{
  RpcPktHdr *resp_hdr;
  RPC_STATUS status;
996 997
  unsigned char *out_buffer;
  unsigned int out_len = 0;
998

999
  TRACE("challenge %s, %d bytes\n", challenge, count);
1000

1001 1002 1003 1004 1005
  status = rpcrt4_conn_authorize(conn, FALSE, challenge, count, NULL, &out_len);
  if (status) return status;
  out_buffer = HeapAlloc(GetProcessHeap(), 0, out_len);
  if (!out_buffer) return RPC_S_OUT_OF_RESOURCES;
  status = rpcrt4_conn_authorize(conn, FALSE, challenge, count, out_buffer, &out_len);
1006
  if (status) return status;
1007 1008 1009

  resp_hdr = RPCRT4_BuildAuthHeader(NDR_LOCAL_DATA_REPRESENTATION);

1010 1011 1012 1013
  if (resp_hdr)
    status = RPCRT4_SendWithAuth(conn, resp_hdr, NULL, 0, out_buffer, out_len);
  else
    status = RPC_S_OUT_OF_RESOURCES;
1014

1015
  HeapFree(GetProcessHeap(), 0, out_buffer);
1016 1017 1018 1019 1020
  RPCRT4_FreeHeader(resp_hdr);

  return status;
}

1021 1022 1023 1024 1025 1026 1027 1028 1029 1030
/***********************************************************************
 *           RPCRT4_ServerConnectionAuth (internal)
 */
RPC_STATUS RPCRT4_ServerConnectionAuth(RpcConnection* conn,
                                       BOOL start,
                                       RpcAuthVerifier *auth_data_in,
                                       ULONG auth_length_in,
                                       unsigned char **auth_data_out,
                                       ULONG *auth_length_out)
{
1031 1032
    unsigned char *out_buffer;
    unsigned int out_size;
1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079
    RPC_STATUS status;

    if (start)
    {
        /* remove any existing authentication information */
        if (conn->AuthInfo)
        {
            RpcAuthInfo_Release(conn->AuthInfo);
            conn->AuthInfo = NULL;
        }
        if (SecIsValidHandle(&conn->ctx))
        {
            DeleteSecurityContext(&conn->ctx);
            SecInvalidateHandle(&conn->ctx);
        }
        if (auth_length_in >= sizeof(RpcAuthVerifier))
        {
            CredHandle cred;
            TimeStamp exp;
            ULONG max_token;

            status = RPCRT4_ServerGetRegisteredAuthInfo(
                auth_data_in->auth_type, &cred, &exp, &max_token);
            if (status != RPC_S_OK)
            {
                ERR("unknown authentication service %u\n", auth_data_in->auth_type);
                return status;
            }

            status = RpcAuthInfo_Create(auth_data_in->auth_level,
                                        auth_data_in->auth_type, cred, exp,
                                        max_token, NULL, &conn->AuthInfo);
            if (status != RPC_S_OK)
                return status;

            /* FIXME: should auth_data_in->auth_context_id be checked in the !start case? */
            conn->auth_context_id = auth_data_in->auth_context_id;
        }
    }

    if (auth_length_in < sizeof(RpcAuthVerifier))
        return RPC_S_OK;

    if (!conn->AuthInfo)
        /* should have filled in authentication info by now */
        return RPC_S_PROTOCOL_ERROR;

1080 1081 1082
    status = rpcrt4_conn_authorize(
        conn, start, (unsigned char *)(auth_data_in + 1),
        auth_length_in - sizeof(RpcAuthVerifier), NULL, &out_size);
1083 1084
    if (status) return status;

1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097
    out_buffer = HeapAlloc(GetProcessHeap(), 0, out_size);
    if (!out_buffer) return RPC_S_OUT_OF_RESOURCES;

    status = rpcrt4_conn_authorize(
        conn, start, (unsigned char *)(auth_data_in + 1),
        auth_length_in - sizeof(RpcAuthVerifier), out_buffer, &out_size);
    if (status != RPC_S_OK)
    {
        HeapFree(GetProcessHeap(), 0, out_buffer);
        return status;
    }

    if (out_size && !auth_length_out)
1098 1099
    {
        ERR("expected authentication to be complete but SSP returned data of "
1100 1101
            "%u bytes to be sent back to client\n", out_size);
        HeapFree(GetProcessHeap(), 0, out_buffer);
1102 1103 1104 1105
        return RPC_S_SEC_PKG_ERROR;
    }
    else
    {
1106 1107
        *auth_data_out = out_buffer;
        *auth_length_out = out_size;
1108 1109 1110 1111 1112
    }

    return status;
}

1113 1114 1115 1116 1117 1118 1119 1120 1121 1122
/***********************************************************************
 *           RPCRT4_default_is_authorized (internal)
 *
 * Has a connection started the process of authorizing with the server?
 */
BOOL RPCRT4_default_is_authorized(RpcConnection *Connection)
{
    return Connection->AuthInfo && SecIsValidHandle(&Connection->ctx);
}

1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178
/***********************************************************************
 *           RPCRT4_default_impersonate_client (internal)
 *
 */
RPC_STATUS RPCRT4_default_impersonate_client(RpcConnection *conn)
{
    SECURITY_STATUS sec_status;

    TRACE("(%p)\n", conn);

    if (!conn->AuthInfo || !SecIsValidHandle(&conn->ctx))
        return RPC_S_NO_CONTEXT_AVAILABLE;
    sec_status = ImpersonateSecurityContext(&conn->ctx);
    if (sec_status != SEC_E_OK)
        WARN("ImpersonateSecurityContext returned 0x%08x\n", sec_status);
    switch (sec_status)
    {
    case SEC_E_UNSUPPORTED_FUNCTION:
        return RPC_S_CANNOT_SUPPORT;
    case SEC_E_NO_IMPERSONATION:
        return RPC_S_NO_CONTEXT_AVAILABLE;
    case SEC_E_OK:
        return RPC_S_OK;
    default:
        return RPC_S_SEC_PKG_ERROR;
    }
}

/***********************************************************************
 *           RPCRT4_default_revert_to_self (internal)
 *
 */
RPC_STATUS RPCRT4_default_revert_to_self(RpcConnection *conn)
{
    SECURITY_STATUS sec_status;

    TRACE("(%p)\n", conn);

    if (!conn->AuthInfo || !SecIsValidHandle(&conn->ctx))
        return RPC_S_NO_CONTEXT_AVAILABLE;
    sec_status = RevertSecurityContext(&conn->ctx);
    if (sec_status != SEC_E_OK)
        WARN("RevertSecurityContext returned 0x%08x\n", sec_status);
    switch (sec_status)
    {
    case SEC_E_UNSUPPORTED_FUNCTION:
        return RPC_S_CANNOT_SUPPORT;
    case SEC_E_NO_IMPERSONATION:
        return RPC_S_NO_CONTEXT_AVAILABLE;
    case SEC_E_OK:
        return RPC_S_OK;
    default:
        return RPC_S_SEC_PKG_ERROR;
    }
}

1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213
/***********************************************************************
 *           RPCRT4_default_inquire_auth_client (internal)
 *
 * Default function to retrieve the authentication details that the client
 * is using to call the server.
 */
RPC_STATUS RPCRT4_default_inquire_auth_client(
    RpcConnection *conn, RPC_AUTHZ_HANDLE *privs, RPC_WSTR *server_princ_name,
    ULONG *authn_level, ULONG *authn_svc, ULONG *authz_svc, ULONG flags)
{
    if (!conn->AuthInfo) return RPC_S_BINDING_HAS_NO_AUTH;

    if (privs)
    {
        FIXME("privs not implemented\n");
        *privs = NULL;
    }
    if (server_princ_name)
    {
        *server_princ_name = RPCRT4_strdupW(conn->AuthInfo->server_principal_name);
        if (!*server_princ_name) return ERROR_OUTOFMEMORY;
    }
    if (authn_level) *authn_level = conn->AuthInfo->AuthnLevel;
    if (authn_svc) *authn_svc = conn->AuthInfo->AuthnSvc;
    if (authz_svc)
    {
        FIXME("authorization service not implemented\n");
        *authz_svc = RPC_C_AUTHZ_NONE;
    }
    if (flags)
        FIXME("flags 0x%x not implemented\n", flags);

    return RPC_S_OK;
}

1214 1215 1216 1217 1218 1219 1220 1221
/***********************************************************************
 *           RPCRT4_Send (internal)
 * 
 * Transmit a packet over connection in acceptable fragments.
 */
RPC_STATUS RPCRT4_Send(RpcConnection *Connection, RpcPktHdr *Header,
                       void *Buffer, unsigned int BufferLength)
{
1222 1223
  RPC_STATUS r;

1224
  if (packet_does_auth_negotiation(Header) &&
1225 1226
      Connection->AuthInfo &&
      !rpcrt4_conn_is_authorized(Connection))
1227
  {
1228 1229 1230 1231 1232 1233 1234 1235 1236
      unsigned int out_size = 0;
      unsigned char *out_buffer;

      r = rpcrt4_conn_authorize(Connection, TRUE, NULL, 0, NULL, &out_size);
      if (r != RPC_S_OK) return r;

      out_buffer = HeapAlloc(GetProcessHeap(), 0, out_size);
      if (!out_buffer) return RPC_S_OUT_OF_RESOURCES;

1237
      /* tack on a negotiate packet */
1238
      r = rpcrt4_conn_authorize(Connection, TRUE, NULL, 0, out_buffer, &out_size);
1239
      if (r == RPC_S_OK)
1240 1241 1242
          r = RPCRT4_SendWithAuth(Connection, Header, Buffer, BufferLength, out_buffer, out_size);

      HeapFree(GetProcessHeap(), 0, out_buffer);
1243
  }
1244 1245
  else
    r = RPCRT4_SendWithAuth(Connection, Header, Buffer, BufferLength, NULL, 0);
1246 1247

  return r;
1248 1249
}

1250
/* validates version and frag_len fields */
1251
RPC_STATUS RPCRT4_ValidateCommonHeader(const RpcPktCommonHdr *hdr)
1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278
{
  DWORD hdr_length;

  /* verify if the header really makes sense */
  if (hdr->rpc_ver != RPC_VER_MAJOR ||
      hdr->rpc_ver_minor != RPC_VER_MINOR)
  {
    WARN("unhandled packet version\n");
    return RPC_S_PROTOCOL_ERROR;
  }

  hdr_length = RPCRT4_GetHeaderSize((const RpcPktHdr*)hdr);
  if (hdr_length == 0)
  {
    WARN("header length == 0\n");
    return RPC_S_PROTOCOL_ERROR;
  }

  if (hdr->frag_len < hdr_length)
  {
    WARN("bad frag length %d\n", hdr->frag_len);
    return RPC_S_PROTOCOL_ERROR;
  }

  return RPC_S_OK;
}

1279
/***********************************************************************
1280
 *           RPCRT4_default_receive_fragment (internal)
1281
 * 
1282
 * Receive a fragment from a connection.
1283
 */
1284
static RPC_STATUS RPCRT4_default_receive_fragment(RpcConnection *Connection, RpcPktHdr **Header, void **Payload)
1285 1286
{
  RPC_STATUS status;
1287 1288
  DWORD hdr_length;
  LONG dwRead;
1289 1290 1291
  RpcPktCommonHdr common_hdr;

  *Header = NULL;
1292
  *Payload = NULL;
1293

1294
  TRACE("(%p, %p, %p)\n", Connection, Header, Payload);
1295

1296
  /* read packet common header */
1297
  dwRead = rpcrt4_conn_read(Connection, &common_hdr, sizeof(common_hdr));
1298
  if (dwRead != sizeof(common_hdr)) {
1299
    WARN("Short read of header, %d bytes\n", dwRead);
1300
    status = RPC_S_CALL_FAILED;
1301 1302 1303
    goto fail;
  }

1304 1305
  status = RPCRT4_ValidateCommonHeader(&common_hdr);
  if (status != RPC_S_OK) goto fail;
1306 1307 1308

  hdr_length = RPCRT4_GetHeaderSize((RpcPktHdr*)&common_hdr);
  if (hdr_length == 0) {
1309
    WARN("header length == 0\n");
1310 1311 1312 1313 1314 1315 1316 1317
    status = RPC_S_PROTOCOL_ERROR;
    goto fail;
  }

  *Header = HeapAlloc(GetProcessHeap(), 0, hdr_length);
  memcpy(*Header, &common_hdr, sizeof(common_hdr));

  /* read the rest of packet header */
1318
  dwRead = rpcrt4_conn_read(Connection, &(*Header)->common + 1, hdr_length - sizeof(common_hdr));
1319
  if (dwRead != hdr_length - sizeof(common_hdr)) {
1320
    WARN("bad header length, %d bytes, hdr_length %d\n", dwRead, hdr_length);
1321
    status = RPC_S_CALL_FAILED;
1322 1323 1324
    goto fail;
  }

1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357
  if (common_hdr.frag_len - hdr_length)
  {
    *Payload = HeapAlloc(GetProcessHeap(), 0, common_hdr.frag_len - hdr_length);
    if (!*Payload)
    {
      status = RPC_S_OUT_OF_RESOURCES;
      goto fail;
    }

    dwRead = rpcrt4_conn_read(Connection, *Payload, common_hdr.frag_len - hdr_length);
    if (dwRead != common_hdr.frag_len - hdr_length)
    {
      WARN("bad data length, %d/%d\n", dwRead, common_hdr.frag_len - hdr_length);
      status = RPC_S_CALL_FAILED;
      goto fail;
    }
  }
  else
    *Payload = NULL;

  /* success */
  status = RPC_S_OK;

fail:
  if (status != RPC_S_OK) {
    RPCRT4_FreeHeader(*Header);
    *Header = NULL;
    HeapFree(GetProcessHeap(), 0, *Payload);
    *Payload = NULL;
  }
  return status;
}

1358 1359 1360 1361 1362 1363 1364 1365
static RPC_STATUS RPCRT4_receive_fragment(RpcConnection *Connection, RpcPktHdr **Header, void **Payload)
{
    if (Connection->ops->receive_fragment)
        return Connection->ops->receive_fragment(Connection, Header, Payload);
    else
        return RPCRT4_default_receive_fragment(Connection, Header, Payload);
}

1366
/***********************************************************************
1367
 *           RPCRT4_ReceiveWithAuth (internal)
1368
 *
1369 1370
 * Receive a packet from connection, merge the fragments and return the auth
 * data.
1371
 */
1372 1373 1374
RPC_STATUS RPCRT4_ReceiveWithAuth(RpcConnection *Connection, RpcPktHdr **Header,
                                  PRPC_MESSAGE pMsg,
                                  unsigned char **auth_data_out,
1375
                                  ULONG *auth_length_out)
1376 1377 1378 1379
{
  RPC_STATUS status;
  DWORD hdr_length;
  unsigned short first_flag;
1380 1381 1382
  ULONG data_length;
  ULONG buffer_length;
  ULONG auth_length = 0;
1383
  unsigned char *auth_data = NULL;
1384
  RpcPktHdr *CurrentHeader = NULL;
1385 1386 1387
  void *payload = NULL;

  *Header = NULL;
1388
  pMsg->Buffer = NULL;
1389 1390
  if (auth_data_out) *auth_data_out = NULL;
  if (auth_length_out) *auth_length_out = 0;
1391

1392
  TRACE("(%p, %p, %p, %p)\n", Connection, Header, pMsg, auth_data_out);
1393 1394 1395 1396 1397 1398 1399 1400

  RPCRT4_SetThreadCurrentConnection(Connection);

  status = RPCRT4_receive_fragment(Connection, Header, &payload);
  if (status != RPC_S_OK) goto fail;

  hdr_length = RPCRT4_GetHeaderSize(*Header);

1401
  /* read packet body */
1402
  switch ((*Header)->common.ptype) {
1403 1404 1405 1406 1407 1408 1409
  case PKT_RESPONSE:
    pMsg->BufferLength = (*Header)->response.alloc_hint;
    break;
  case PKT_REQUEST:
    pMsg->BufferLength = (*Header)->request.alloc_hint;
    break;
  default:
1410
    pMsg->BufferLength = (*Header)->common.frag_len - hdr_length - RPC_AUTH_VERIFIER_LEN(&(*Header)->common);
1411
  }
1412 1413 1414

  TRACE("buffer length = %u\n", pMsg->BufferLength);

1415 1416 1417 1418 1419 1420
  pMsg->Buffer = I_RpcAllocate(pMsg->BufferLength);
  if (!pMsg->Buffer)
  {
    status = ERROR_OUTOFMEMORY;
    goto fail;
  }
1421 1422

  first_flag = RPC_FLG_FIRST;
1423
  auth_length = (*Header)->common.auth_len;
1424
  if (auth_length) {
1425
    auth_data = HeapAlloc(GetProcessHeap(), 0, RPC_AUTH_VERIFIER_LEN(&(*Header)->common));
1426
    if (!auth_data) {
1427
      status = RPC_S_OUT_OF_RESOURCES;
1428 1429 1430
      goto fail;
    }
  }
1431
  CurrentHeader = *Header;
1432
  buffer_length = 0;
1433
  while (TRUE)
1434
  {
1435
    unsigned int header_auth_len = RPC_AUTH_VERIFIER_LEN(&CurrentHeader->common);
1436 1437 1438

    /* verify header fields */

1439 1440
    if ((CurrentHeader->common.frag_len < hdr_length) ||
        (CurrentHeader->common.frag_len - hdr_length < header_auth_len)) {
1441
      WARN("frag_len %d too small for hdr_length %d and auth_len %d\n",
1442
        CurrentHeader->common.frag_len, hdr_length, CurrentHeader->common.auth_len);
1443 1444 1445 1446
      status = RPC_S_PROTOCOL_ERROR;
      goto fail;
    }

1447
    if (CurrentHeader->common.auth_len != auth_length) {
1448
      WARN("auth_len header field changed from %d to %d\n",
1449
        auth_length, CurrentHeader->common.auth_len);
1450 1451 1452 1453
      status = RPC_S_PROTOCOL_ERROR;
      goto fail;
    }

1454
    if ((CurrentHeader->common.flags & RPC_FLG_FIRST) != first_flag) {
1455
      TRACE("invalid packet flags\n");
1456 1457 1458 1459
      status = RPC_S_PROTOCOL_ERROR;
      goto fail;
    }

1460
    data_length = CurrentHeader->common.frag_len - hdr_length - header_auth_len;
1461
    if (data_length + buffer_length > pMsg->BufferLength) {
1462
      TRACE("allocation hint exceeded, new buffer length = %d\n",
1463 1464 1465 1466 1467 1468
        data_length + buffer_length);
      pMsg->BufferLength = data_length + buffer_length;
      status = I_RpcReAllocateBuffer(pMsg);
      if (status != RPC_S_OK) goto fail;
    }

1469
    memcpy((unsigned char *)pMsg->Buffer + buffer_length, payload, data_length);
1470

1471
    if (header_auth_len) {
1472 1473
      if (header_auth_len < sizeof(RpcAuthVerifier) ||
          header_auth_len > RPC_AUTH_VERIFIER_LEN(&(*Header)->common)) {
1474 1475 1476 1477 1478
        WARN("bad auth verifier length %d\n", header_auth_len);
        status = RPC_S_PROTOCOL_ERROR;
        goto fail;
      }

1479 1480 1481 1482 1483
      /* FIXME: we should accumulate authentication data for the bind,
       * bind_ack, alter_context and alter_context_response if necessary.
       * however, the details of how this is done is very sketchy in the
       * DCE/RPC spec. for all other packet types that have authentication
       * verifier data then it is just duplicated in all the fragments */
1484
      memcpy(auth_data, (unsigned char *)payload + data_length, header_auth_len);
1485 1486 1487

      /* these packets are handled specially, not by the generic SecurePacket
       * function */
1488
      if (!packet_does_auth_negotiation(*Header) && rpcrt4_conn_is_authorized(Connection))
1489
      {
1490
        status = rpcrt4_conn_secure_packet(Connection, SECURE_PACKET_RECEIVE,
1491
            CurrentHeader, hdr_length,
1492 1493
            (unsigned char *)pMsg->Buffer + buffer_length, data_length,
            (RpcAuthVerifier *)auth_data,
1494
            auth_data + sizeof(RpcAuthVerifier),
1495
            header_auth_len - sizeof(RpcAuthVerifier));
1496 1497
        if (status != RPC_S_OK) goto fail;
      }
1498 1499
    }

1500
    buffer_length += data_length;
1501
    if (!(CurrentHeader->common.flags & RPC_FLG_LAST)) {
1502 1503
      TRACE("next header\n");

1504 1505 1506 1507
      if (*Header != CurrentHeader)
      {
          RPCRT4_FreeHeader(CurrentHeader);
          CurrentHeader = NULL;
1508
      }
1509 1510 1511 1512 1513
      HeapFree(GetProcessHeap(), 0, payload);
      payload = NULL;

      status = RPCRT4_receive_fragment(Connection, &CurrentHeader, &payload);
      if (status != RPC_S_OK) goto fail;
1514 1515

      first_flag = 0;
1516 1517
    } else {
      break;
1518 1519
    }
  }
1520
  pMsg->BufferLength = buffer_length;
1521 1522 1523 1524 1525

  /* success */
  status = RPC_S_OK;

fail:
1526
  RPCRT4_SetThreadCurrentConnection(NULL);
1527 1528
  if (CurrentHeader != *Header)
    RPCRT4_FreeHeader(CurrentHeader);
1529
  if (status != RPC_S_OK) {
1530 1531
    I_RpcFree(pMsg->Buffer);
    pMsg->Buffer = NULL;
1532 1533 1534
    RPCRT4_FreeHeader(*Header);
    *Header = NULL;
  }
1535 1536 1537 1538 1539 1540
  if (auth_data_out && status == RPC_S_OK) {
    *auth_length_out = auth_length;
    *auth_data_out = auth_data;
  }
  else
    HeapFree(GetProcessHeap(), 0, auth_data);
1541
  HeapFree(GetProcessHeap(), 0, payload);
1542 1543 1544
  return status;
}

1545 1546 1547 1548 1549
/***********************************************************************
 *           RPCRT4_Receive (internal)
 *
 * Receive a packet from connection and merge the fragments.
 */
1550 1551
static RPC_STATUS RPCRT4_Receive(RpcConnection *Connection, RpcPktHdr **Header,
                                 PRPC_MESSAGE pMsg)
1552 1553 1554 1555
{
    return RPCRT4_ReceiveWithAuth(Connection, Header, pMsg, NULL, NULL);
}

1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571
/***********************************************************************
 *           I_RpcNegotiateTransferSyntax [RPCRT4.@]
 *
 * Negotiates the transfer syntax used by a client connection by connecting
 * to the server.
 *
 * PARAMS
 *  pMsg   [I] RPC Message structure.
 *  pAsync [I] Asynchronous state to set.
 *
 * RETURNS
 *  Success: RPC_S_OK.
 *  Failure: Any error code.
 */
RPC_STATUS WINAPI I_RpcNegotiateTransferSyntax(PRPC_MESSAGE pMsg)
{
1572
  RpcBinding* bind = pMsg->Handle;
1573 1574 1575 1576 1577 1578
  RpcConnection* conn;
  RPC_STATUS status = RPC_S_OK;

  TRACE("(%p)\n", pMsg);

  if (!bind || bind->server)
1579 1580
  {
    ERR("no binding\n");
1581
    return RPC_S_INVALID_BINDING;
1582
  }
1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600

  /* if we already have a connection, we don't need to negotiate again */
  if (!pMsg->ReservedForRuntime)
  {
    RPC_CLIENT_INTERFACE *cif = pMsg->RpcInterfaceInformation;
    if (!cif) return RPC_S_INTERFACE_NOT_FOUND;

    if (!bind->Endpoint || !bind->Endpoint[0])
    {
      TRACE("automatically resolving partially bound binding\n");
      status = RpcEpResolveBinding(bind, cif);
      if (status != RPC_S_OK) return status;
    }

    status = RPCRT4_OpenBinding(bind, &conn, &cif->TransferSyntax,
                                &cif->InterfaceId);

    if (status == RPC_S_OK)
1601
    {
1602
      pMsg->ReservedForRuntime = conn;
1603 1604
      RPCRT4_AddRefBinding(bind);
    }
1605 1606 1607 1608 1609
  }

  return status;
}

1610 1611
/***********************************************************************
 *           I_RpcGetBuffer [RPCRT4.@]
1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632
 *
 * Allocates a buffer for use by I_RpcSend or I_RpcSendReceive and binds to the
 * server interface.
 *
 * PARAMS
 *  pMsg [I/O] RPC message information.
 *
 * RETURNS
 *  Success: RPC_S_OK.
 *  Failure: RPC_S_INVALID_BINDING if pMsg->Handle is invalid.
 *           RPC_S_SERVER_UNAVAILABLE if unable to connect to server.
 *           ERROR_OUTOFMEMORY if buffer allocation failed.
 *
 * NOTES
 *  The pMsg->BufferLength field determines the size of the buffer to allocate,
 *  in bytes.
 *
 *  Use I_RpcFreeBuffer() to unbind from the server and free the message buffer.
 *
 * SEE ALSO
 *  I_RpcFreeBuffer(), I_RpcSend(), I_RpcReceive(), I_RpcSendReceive().
1633 1634 1635
 */
RPC_STATUS WINAPI I_RpcGetBuffer(PRPC_MESSAGE pMsg)
{
1636
  RPC_STATUS status;
1637
  RpcBinding* bind = pMsg->Handle;
1638

1639
  TRACE("(%p): BufferLength=%d\n", pMsg, pMsg->BufferLength);
1640

1641
  if (!bind)
1642 1643
  {
    ERR("no binding\n");
1644
    return RPC_S_INVALID_BINDING;
1645
  }
1646 1647

  pMsg->Buffer = I_RpcAllocate(pMsg->BufferLength);
1648
  TRACE("Buffer=%p\n", pMsg->Buffer);
1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662

  if (!pMsg->Buffer)
    return ERROR_OUTOFMEMORY;

  if (!bind->server)
  {
    status = I_RpcNegotiateTransferSyntax(pMsg);
    if (status != RPC_S_OK)
      I_RpcFree(pMsg->Buffer);
  }
  else
    status = RPC_S_OK;

  return status;
1663 1664
}

1665 1666 1667 1668 1669 1670 1671 1672 1673
/***********************************************************************
 *           I_RpcReAllocateBuffer (internal)
 */
static RPC_STATUS I_RpcReAllocateBuffer(PRPC_MESSAGE pMsg)
{
  TRACE("(%p): BufferLength=%d\n", pMsg, pMsg->BufferLength);
  pMsg->Buffer = HeapReAlloc(GetProcessHeap(), 0, pMsg->Buffer, pMsg->BufferLength);

  TRACE("Buffer=%p\n", pMsg->Buffer);
1674
  return pMsg->Buffer ? RPC_S_OK : ERROR_OUTOFMEMORY;
1675 1676
}

1677 1678
/***********************************************************************
 *           I_RpcFreeBuffer [RPCRT4.@]
1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690
 *
 * Frees a buffer allocated by I_RpcGetBuffer or I_RpcReceive and unbinds from
 * the server interface.
 *
 * PARAMS
 *  pMsg [I/O] RPC message information.
 *
 * RETURNS
 *  RPC_S_OK.
 *
 * SEE ALSO
 *  I_RpcGetBuffer(), I_RpcReceive().
1691 1692 1693
 */
RPC_STATUS WINAPI I_RpcFreeBuffer(PRPC_MESSAGE pMsg)
{
1694
  RpcBinding* bind = pMsg->Handle;
1695

1696
  TRACE("(%p) Buffer=%p\n", pMsg, pMsg->Buffer);
1697

1698 1699 1700 1701 1702
  if (!bind)
  {
    ERR("no binding\n");
    return RPC_S_INVALID_BINDING;
  }
1703 1704 1705 1706 1707

  if (pMsg->ReservedForRuntime)
  {
    RpcConnection *conn = pMsg->ReservedForRuntime;
    RPCRT4_CloseBinding(bind, conn);
1708
    RPCRT4_ReleaseBinding(bind);
1709 1710 1711
    pMsg->ReservedForRuntime = NULL;
  }
  I_RpcFree(pMsg->Buffer);
1712
  return RPC_S_OK;
1713 1714
}

1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725
static void CALLBACK async_apc_notifier_proc(ULONG_PTR ulParam)
{
    RPC_ASYNC_STATE *state = (RPC_ASYNC_STATE *)ulParam;
    state->u.APC.NotificationRoutine(state, NULL, state->Event);
}

static DWORD WINAPI async_notifier_proc(LPVOID p)
{
    RpcConnection *conn = p;
    RPC_ASYNC_STATE *state = conn->async_state;

1726
    if (state && conn->ops->wait_for_incoming_data(conn) != -1)
1727 1728 1729 1730 1731
    {
        state->Event = RpcCallComplete;
        switch (state->NotificationType)
        {
        case RpcNotificationTypeEvent:
1732
            TRACE("RpcNotificationTypeEvent %p\n", state->u.hEvent);
1733 1734 1735
            SetEvent(state->u.hEvent);
            break;
        case RpcNotificationTypeApc:
1736
            TRACE("RpcNotificationTypeApc %p\n", state->u.APC.hThread);
1737 1738 1739
            QueueUserAPC(async_apc_notifier_proc, state->u.APC.hThread, (ULONG_PTR)state);
            break;
        case RpcNotificationTypeIoc:
1740 1741 1742
            TRACE("RpcNotificationTypeIoc %p, 0x%x, 0x%lx, %p\n",
                state->u.IOC.hIOPort, state->u.IOC.dwNumberOfBytesTransferred,
                state->u.IOC.dwCompletionKey, state->u.IOC.lpOverlapped);
1743 1744 1745 1746 1747 1748
            PostQueuedCompletionStatus(state->u.IOC.hIOPort,
                state->u.IOC.dwNumberOfBytesTransferred,
                state->u.IOC.dwCompletionKey,
                state->u.IOC.lpOverlapped);
            break;
        case RpcNotificationTypeHwnd:
1749 1750
            TRACE("RpcNotificationTypeHwnd %p 0x%x\n", state->u.HWND.hWnd,
                state->u.HWND.Msg);
1751 1752 1753
            PostMessageW(state->u.HWND.hWnd, state->u.HWND.Msg, 0, 0);
            break;
        case RpcNotificationTypeCallback:
1754
            TRACE("RpcNotificationTypeCallback %p\n", state->u.NotificationRoutine);
1755 1756 1757
            state->u.NotificationRoutine(state, NULL, state->Event);
            break;
        case RpcNotificationTypeNone:
1758 1759
            TRACE("RpcNotificationTypeNone\n");
            break;
1760
        default:
1761
            FIXME("unknown NotificationType: %d/0x%x\n", state->NotificationType, state->NotificationType);
1762 1763 1764 1765 1766 1767 1768
            break;
        }
    }

    return 0;
}

1769 1770
/***********************************************************************
 *           I_RpcSend [RPCRT4.@]
1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784
 *
 * Sends a message to the server.
 *
 * PARAMS
 *  pMsg [I/O] RPC message information.
 *
 * RETURNS
 *  Unknown.
 *
 * NOTES
 *  The buffer must have been allocated with I_RpcGetBuffer().
 *
 * SEE ALSO
 *  I_RpcGetBuffer(), I_RpcReceive(), I_RpcSendReceive().
1785 1786 1787
 */
RPC_STATUS WINAPI I_RpcSend(PRPC_MESSAGE pMsg)
{
1788
  RpcBinding* bind = pMsg->Handle;
1789
  RpcConnection* conn;
1790
  RPC_STATUS status;
1791
  RpcPktHdr *hdr;
1792 1793

  TRACE("(%p)\n", pMsg);
1794
  if (!bind || bind->server || !pMsg->ReservedForRuntime) return RPC_S_INVALID_BINDING;
1795

1796
  conn = pMsg->ReservedForRuntime;
1797

1798
  hdr = RPCRT4_BuildRequestHeader(pMsg->DataRepresentation,
1799 1800
                                  pMsg->BufferLength,
                                  pMsg->ProcNum & ~RPC_FLAGS_VALID_BIT,
1801 1802 1803 1804
                                  &bind->ObjectUuid);
  if (!hdr)
    return ERROR_OUTOFMEMORY;
  hdr->common.call_id = conn->NextCallId++;
1805

1806 1807 1808 1809
  status = RPCRT4_Send(conn, hdr, pMsg->Buffer, pMsg->BufferLength);

  RPCRT4_FreeHeader(hdr);

1810 1811 1812 1813 1814 1815
  if (status == RPC_S_OK && pMsg->RpcFlags & RPC_BUFFER_ASYNC)
  {
    if (!QueueUserWorkItem(async_notifier_proc, conn, WT_EXECUTEDEFAULT | WT_EXECUTELONGFUNCTION))
        status = RPC_S_OUT_OF_RESOURCES;
  }

1816
  return status;
1817 1818
}

1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829
/* is this status something that the server can't recover from? */
static inline BOOL is_hard_error(RPC_STATUS status)
{
    switch (status)
    {
    case 0: /* user-defined fault */
    case ERROR_ACCESS_DENIED:
    case ERROR_INVALID_PARAMETER:
    case RPC_S_PROTOCOL_ERROR:
    case RPC_S_CALL_FAILED:
    case RPC_S_CALL_FAILED_DNE:
1830
    case RPC_S_SEC_PKG_ERROR:
1831 1832 1833 1834 1835 1836
        return TRUE;
    default:
        return FALSE;
    }
}

1837 1838 1839 1840 1841
/***********************************************************************
 *           I_RpcReceive [RPCRT4.@]
 */
RPC_STATUS WINAPI I_RpcReceive(PRPC_MESSAGE pMsg)
{
1842
  RpcBinding* bind = pMsg->Handle;
1843
  RPC_STATUS status;
1844
  RpcPktHdr *hdr = NULL;
1845
  RpcConnection *conn;
1846 1847

  TRACE("(%p)\n", pMsg);
1848
  if (!bind || bind->server || !pMsg->ReservedForRuntime) return RPC_S_INVALID_BINDING;
1849

1850
  conn = pMsg->ReservedForRuntime;
1851 1852
  status = RPCRT4_Receive(conn, &hdr, pMsg);
  if (status != RPC_S_OK) {
1853
    WARN("receive failed with error %x\n", status);
1854 1855
    goto fail;
  }
1856

1857 1858
  switch (hdr->common.ptype) {
  case PKT_RESPONSE:
1859
    break;
1860
  case PKT_FAULT:
1861
    ERR ("we got fault packet with status 0x%x\n", hdr->fault.status);
1862
    status = NCA2RPC_STATUS(hdr->fault.status);
1863 1864 1865
    if (is_hard_error(status))
        goto fail;
    break;
1866
  default:
1867
    WARN("bad packet type %d\n", hdr->common.ptype);
1868
    status = RPC_S_PROTOCOL_ERROR;
1869
    goto fail;
1870
  }
1871 1872

  /* success */
1873 1874
  RPCRT4_FreeHeader(hdr);
  return status;
1875

1876
fail:
1877
  RPCRT4_FreeHeader(hdr);
1878
  RPCRT4_ReleaseConnection(conn);
1879
  pMsg->ReservedForRuntime = NULL;
1880
  return status;
1881 1882 1883 1884
}

/***********************************************************************
 *           I_RpcSendReceive [RPCRT4.@]
1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899
 *
 * Sends a message to the server and receives the response.
 *
 * PARAMS
 *  pMsg [I/O] RPC message information.
 *
 * RETURNS
 *  Success: RPC_S_OK.
 *  Failure: Any error code.
 *
 * NOTES
 *  The buffer must have been allocated with I_RpcGetBuffer().
 *
 * SEE ALSO
 *  I_RpcGetBuffer(), I_RpcSend(), I_RpcReceive().
1900 1901 1902 1903
 */
RPC_STATUS WINAPI I_RpcSendReceive(PRPC_MESSAGE pMsg)
{
  RPC_STATUS status;
1904
  void *original_buffer;
1905 1906

  TRACE("(%p)\n", pMsg);
1907

1908
  original_buffer = pMsg->Buffer;
1909 1910 1911
  status = I_RpcSend(pMsg);
  if (status == RPC_S_OK)
    status = I_RpcReceive(pMsg);
1912 1913
  /* free the buffer replaced by a new buffer in I_RpcReceive */
  if (status == RPC_S_OK)
1914
    I_RpcFree(original_buffer);
1915 1916
  return status;
}
1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933

/***********************************************************************
 *           I_RpcAsyncSetHandle [RPCRT4.@]
 *
 * Sets the asynchronous state of the handle contained in the RPC message
 * structure.
 *
 * PARAMS
 *  pMsg   [I] RPC Message structure.
 *  pAsync [I] Asynchronous state to set.
 *
 * RETURNS
 *  Success: RPC_S_OK.
 *  Failure: Any error code.
 */
RPC_STATUS WINAPI I_RpcAsyncSetHandle(PRPC_MESSAGE pMsg, PRPC_ASYNC_STATE pAsync)
{
1934
    RpcBinding* bind = pMsg->Handle;
1935 1936 1937 1938 1939 1940 1941 1942 1943 1944
    RpcConnection *conn;

    TRACE("(%p, %p)\n", pMsg, pAsync);

    if (!bind || bind->server || !pMsg->ReservedForRuntime) return RPC_S_INVALID_BINDING;

    conn = pMsg->ReservedForRuntime;
    conn->async_state = pAsync;

    return RPC_S_OK;
1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964
}

/***********************************************************************
 *           I_RpcAsyncAbortCall [RPCRT4.@]
 *
 * Aborts an asynchronous call.
 *
 * PARAMS
 *  pAsync        [I] Asynchronous state.
 *  ExceptionCode [I] Exception code.
 *
 * RETURNS
 *  Success: RPC_S_OK.
 *  Failure: Any error code.
 */
RPC_STATUS WINAPI I_RpcAsyncAbortCall(PRPC_ASYNC_STATE pAsync, ULONG ExceptionCode)
{
    FIXME("(%p, %d): stub\n", pAsync, ExceptionCode);
    return RPC_S_INVALID_ASYNC_HANDLE;
}