git.oblomov.eu Git - wine/blob - dlls/rpcrt4/rpc_message.c

   1 /*
   2  * RPC messages
   3  *
   4  * Copyright 2001-2002 Ove Kåven, TransGaming Technologies
   5  * Copyright 2004 Filip Navara
   6  * Copyright 2006 CodeWeavers
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library 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 GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * 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 #include <stdio.h>
  25 #include <string.h>
  26
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "winerror.h"
  30 #include "winuser.h"
  31
  32 #include "rpc.h"
  33 #include "rpcndr.h"
  34 #include "rpcdcep.h"
  35
  36 #include "wine/debug.h"
  37
  38 #include "rpc_binding.h"
  39 #include "rpc_defs.h"
  40 #include "rpc_message.h"
  41 #include "ncastatus.h"
  42
  43 WINE_DEFAULT_DEBUG_CHANNEL(rpc);
  44
  45 /* note: the DCE/RPC spec says the alignment amount should be 4, but
  46  * MS/RPC servers seem to always use 16 */
  47 #define AUTH_ALIGNMENT 16
  48
  49 /* gets the amount needed to round a value up to the specified alignment */
  50 #define ROUND_UP_AMOUNT(value, alignment) \
  51     (((alignment) - (((value) % (alignment)))) % (alignment))
  52 #define ROUND_UP(value, alignment) (((value) + ((alignment) - 1)) & ~((alignment)-1))
  53
  54 static RPC_STATUS I_RpcReAllocateBuffer(PRPC_MESSAGE pMsg);
  55
  56 DWORD RPCRT4_GetHeaderSize(const RpcPktHdr *Header)
  57 {
  58   static const DWORD header_sizes[] = {
  59     sizeof(Header->request), 0, sizeof(Header->response),
  60     sizeof(Header->fault), 0, 0, 0, 0, 0, 0, 0, sizeof(Header->bind),
  61     sizeof(Header->bind_ack), sizeof(Header->bind_nack),
  62     0, 0, sizeof(Header->auth3), 0, 0, 0, sizeof(Header->http)
  63   };
  64   ULONG ret = 0;
  65
  66   if (Header->common.ptype < sizeof(header_sizes) / sizeof(header_sizes[0])) {
  67     ret = header_sizes[Header->common.ptype];
  68     if (ret == 0)
  69       FIXME("unhandled packet type %u\n", Header->common.ptype);
  70     if (Header->common.flags & RPC_FLG_OBJECT_UUID)
  71       ret += sizeof(UUID);
  72   } else {
  73     WARN("invalid packet type %u\n", Header->common.ptype);
  74   }
  75
  76   return ret;
  77 }
  78
  79 static int packet_has_body(const RpcPktHdr *Header)
  80 {
  81     return (Header->common.ptype == PKT_FAULT) ||
  82            (Header->common.ptype == PKT_REQUEST) ||
  83            (Header->common.ptype == PKT_RESPONSE);
  84 }
  85
  86 static int packet_has_auth_verifier(const RpcPktHdr *Header)
  87 {
  88     return !(Header->common.ptype == PKT_BIND_NACK) &&
  89            !(Header->common.ptype == PKT_SHUTDOWN);
  90 }
  91
  92 static int packet_does_auth_negotiation(const RpcPktHdr *Header)
  93 {
  94     switch (Header->common.ptype)
  95     {
  96     case PKT_BIND:
  97     case PKT_BIND_ACK:
  98     case PKT_AUTH3:
  99     case PKT_ALTER_CONTEXT:
 100     case PKT_ALTER_CONTEXT_RESP:
 101         return TRUE;
 102     default:
 103         return FALSE;
 104     }
 105 }
 106
 107 static VOID RPCRT4_BuildCommonHeader(RpcPktHdr *Header, unsigned char PacketType,
 108                                      ULONG DataRepresentation)
 109 {
 110   Header->common.rpc_ver = RPC_VER_MAJOR;
 111   Header->common.rpc_ver_minor = RPC_VER_MINOR;
 112   Header->common.ptype = PacketType;
 113   Header->common.drep[0] = LOBYTE(LOWORD(DataRepresentation));
 114   Header->common.drep[1] = HIBYTE(LOWORD(DataRepresentation));
 115   Header->common.drep[2] = LOBYTE(HIWORD(DataRepresentation));
 116   Header->common.drep[3] = HIBYTE(HIWORD(DataRepresentation));
 117   Header->common.auth_len = 0;
 118   Header->common.call_id = 1;
 119   Header->common.flags = 0;
 120   /* Flags and fragment length are computed in RPCRT4_Send. */
 121 }
 122
 123 static RpcPktHdr *RPCRT4_BuildRequestHeader(ULONG DataRepresentation,
 124                                      ULONG BufferLength,
 125                                      unsigned short ProcNum,
 126                                      UUID *ObjectUuid)
 127 {
 128   RpcPktHdr *header;
 129   BOOL has_object;
 130   RPC_STATUS status;
 131
 132   has_object = (ObjectUuid != NULL && !UuidIsNil(ObjectUuid, &status));
 133   header = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
 134                      sizeof(header->request) + (has_object ? sizeof(UUID) : 0));
 135   if (header == NULL) {
 136     return NULL;
 137   }
 138
 139   RPCRT4_BuildCommonHeader(header, PKT_REQUEST, DataRepresentation);
 140   header->common.frag_len = sizeof(header->request);
 141   header->request.alloc_hint = BufferLength;
 142   header->request.context_id = 0;
 143   header->request.opnum = ProcNum;
 144   if (has_object) {
 145     header->common.flags |= RPC_FLG_OBJECT_UUID;
 146     header->common.frag_len += sizeof(UUID);
 147     memcpy(&header->request + 1, ObjectUuid, sizeof(UUID));
 148   }
 149
 150   return header;
 151 }
 152
 153 RpcPktHdr *RPCRT4_BuildResponseHeader(ULONG DataRepresentation, ULONG BufferLength)
 154 {
 155   RpcPktHdr *header;
 156
 157   header = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(header->response));
 158   if (header == NULL) {
 159     return NULL;
 160   }
 161
 162   RPCRT4_BuildCommonHeader(header, PKT_RESPONSE, DataRepresentation);
 163   header->common.frag_len = sizeof(header->response);
 164   header->response.alloc_hint = BufferLength;
 165
 166   return header;
 167 }
 168
 169 RpcPktHdr *RPCRT4_BuildFaultHeader(ULONG DataRepresentation, RPC_STATUS Status)
 170 {
 171   RpcPktHdr *header;
 172
 173   header = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(header->fault));
 174   if (header == NULL) {
 175     return NULL;
 176   }
 177
 178   RPCRT4_BuildCommonHeader(header, PKT_FAULT, DataRepresentation);
 179   header->common.frag_len = sizeof(header->fault);
 180   header->fault.status = Status;
 181
 182   return header;
 183 }
 184
 185 RpcPktHdr *RPCRT4_BuildBindHeader(ULONG DataRepresentation,
 186                                   unsigned short MaxTransmissionSize,
 187                                   unsigned short MaxReceiveSize,
 188                                   ULONG  AssocGroupId,
 189                                   const RPC_SYNTAX_IDENTIFIER *AbstractId,
 190                                   const RPC_SYNTAX_IDENTIFIER *TransferId)
 191 {
 192   RpcPktHdr *header;
 193   RpcContextElement *ctxt_elem;
 194
 195   header = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
 196                      sizeof(header->bind) + FIELD_OFFSET(RpcContextElement, transfer_syntaxes[1]));
 197   if (header == NULL) {
 198     return NULL;
 199   }
 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   header->bind.max_tsize = MaxTransmissionSize;
 205   header->bind.max_rsize = MaxReceiveSize;
 206   header->bind.assoc_gid = AssocGroupId;
 207   header->bind.num_elements = 1;
 208   ctxt_elem->num_syntaxes = 1;
 209   ctxt_elem->abstract_syntax = *AbstractId;
 210   ctxt_elem->transfer_syntaxes[0] = *TransferId;
 211
 212   return header;
 213 }
 214
 215 static RpcPktHdr *RPCRT4_BuildAuthHeader(ULONG DataRepresentation)
 216 {
 217   RpcPktHdr *header;
 218
 219   header = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
 220                      sizeof(header->auth3));
 221   if (header == NULL)
 222     return NULL;
 223
 224   RPCRT4_BuildCommonHeader(header, PKT_AUTH3, DataRepresentation);
 225   header->common.frag_len = sizeof(header->auth3);
 226
 227   return header;
 228 }
 229
 230 RpcPktHdr *RPCRT4_BuildBindNackHeader(ULONG DataRepresentation,
 231                                       unsigned char RpcVersion,
 232                                       unsigned char RpcVersionMinor,
 233                                       unsigned short RejectReason)
 234 {
 235   RpcPktHdr *header;
 236
 237   header = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, FIELD_OFFSET(RpcPktHdr, bind_nack.protocols[1]));
 238   if (header == NULL) {
 239     return NULL;
 240   }
 241
 242   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   header->bind_nack.protocols_count = 1;
 246   header->bind_nack.protocols[0].rpc_ver = RpcVersion;
 247   header->bind_nack.protocols[0].rpc_ver_minor = RpcVersionMinor;
 248
 249   return header;
 250 }
 251
 252 RpcPktHdr *RPCRT4_BuildBindAckHeader(ULONG DataRepresentation,
 253                                      unsigned short MaxTransmissionSize,
 254                                      unsigned short MaxReceiveSize,
 255                                      ULONG AssocGroupId,
 256                                      LPCSTR ServerAddress,
 257                                      unsigned char ResultCount,
 258                                      const RpcResult *Results)
 259 {
 260   RpcPktHdr *header;
 261   ULONG header_size;
 262   RpcAddressString *server_address;
 263   RpcResultList *results;
 264
 265   header_size = sizeof(header->bind_ack) +
 266                 ROUND_UP(FIELD_OFFSET(RpcAddressString, string[strlen(ServerAddress) + 1]), 4) +
 267                 FIELD_OFFSET(RpcResultList, results[ResultCount]);
 268
 269   header = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, header_size);
 270   if (header == NULL) {
 271     return NULL;
 272   }
 273
 274   RPCRT4_BuildCommonHeader(header, PKT_BIND_ACK, DataRepresentation);
 275   header->common.frag_len = header_size;
 276   header->bind_ack.max_tsize = MaxTransmissionSize;
 277   header->bind_ack.max_rsize = MaxReceiveSize;
 278   header->bind_ack.assoc_gid = AssocGroupId;
 279   server_address = (RpcAddressString*)(&header->bind_ack + 1);
 280   server_address->length = strlen(ServerAddress) + 1;
 281   strcpy(server_address->string, ServerAddress);
 282   /* results is 4-byte aligned */
 283   results = (RpcResultList*)((ULONG_PTR)server_address + ROUND_UP(FIELD_OFFSET(RpcAddressString, string[server_address->length]), 4));
 284   results->num_results = ResultCount;
 285   memcpy(&results->results[0], Results, ResultCount * sizeof(*Results));
 286
 287   return header;
 288 }
 289
 290 RpcPktHdr *RPCRT4_BuildHttpHeader(ULONG DataRepresentation,
 291                                   unsigned short flags,
 292                                   unsigned short num_data_items,
 293                                   unsigned int payload_size)
 294 {
 295   RpcPktHdr *header;
 296
 297   header = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(header->http) + payload_size);
 298   if (header == NULL) {
 299       ERR("failed to allocate memory\n");
 300     return NULL;
 301   }
 302
 303   RPCRT4_BuildCommonHeader(header, PKT_HTTP, DataRepresentation);
 304   /* since the packet isn't current sent using RPCRT4_Send, set the flags
 305    * manually here */
 306   header->common.flags = RPC_FLG_FIRST|RPC_FLG_LAST;
 307   header->common.call_id = 0;
 308   header->common.frag_len = sizeof(header->http) + payload_size;
 309   header->http.flags = flags;
 310   header->http.num_data_items = num_data_items;
 311
 312   return header;
 313 }
 314
 315 #define WRITE_HTTP_PAYLOAD_FIELD_UINT32(payload, type, value) \
 316     do { \
 317         *(unsigned int *)(payload) = (type); \
 318         (payload) += 4; \
 319         *(unsigned int *)(payload) = (value); \
 320         (payload) += 4; \
 321     } while (0)
 322
 323 #define WRITE_HTTP_PAYLOAD_FIELD_UUID(payload, type, uuid) \
 324     do { \
 325         *(unsigned int *)(payload) = (type); \
 326         (payload) += 4; \
 327         *(UUID *)(payload) = (uuid); \
 328         (payload) += sizeof(UUID); \
 329     } while (0)
 330
 331 #define WRITE_HTTP_PAYLOAD_FIELD_FLOW_CONTROL(payload, bytes_transmitted, flow_control_increment, uuid) \
 332     do { \
 333         *(unsigned int *)(payload) = 0x00000001; \
 334         (payload) += 4; \
 335         *(unsigned int *)(payload) = (bytes_transmitted); \
 336         (payload) += 4; \
 337         *(unsigned int *)(payload) = (flow_control_increment); \
 338         (payload) += 4; \
 339         *(UUID *)(payload) = (uuid); \
 340         (payload) += sizeof(UUID); \
 341     } while (0)
 342
 343 RpcPktHdr *RPCRT4_BuildHttpConnectHeader(unsigned short flags, int out_pipe,
 344                                          const UUID *connection_uuid,
 345                                          const UUID *pipe_uuid,
 346                                          const UUID *association_uuid)
 347 {
 348   RpcPktHdr *header;
 349   unsigned int size;
 350   char *payload;
 351
 352   size = 8 + 4 + sizeof(UUID) + 4 + sizeof(UUID) + 8;
 353   if (!out_pipe)
 354     size += 8 + 4 + sizeof(UUID);
 355
 356   header = RPCRT4_BuildHttpHeader(NDR_LOCAL_DATA_REPRESENTATION, flags,
 357                                   out_pipe ? 4 : 6, size);
 358   if (!header) return NULL;
 359   payload = (char *)(&header->http+1);
 360
 361   /* FIXME: what does this part of the payload do? */
 362   WRITE_HTTP_PAYLOAD_FIELD_UINT32(payload, 0x00000006, 0x00000001);
 363
 364   WRITE_HTTP_PAYLOAD_FIELD_UUID(payload, 0x00000003, *connection_uuid);
 365   WRITE_HTTP_PAYLOAD_FIELD_UUID(payload, 0x00000003, *pipe_uuid);
 366
 367   if (out_pipe)
 368     /* FIXME: what does this part of the payload do? */
 369     WRITE_HTTP_PAYLOAD_FIELD_UINT32(payload, 0x00000000, 0x00010000);
 370   else
 371   {
 372     /* FIXME: what does this part of the payload do? */
 373     WRITE_HTTP_PAYLOAD_FIELD_UINT32(payload, 0x00000004, 0x40000000);
 374     /* FIXME: what does this part of the payload do? */
 375     WRITE_HTTP_PAYLOAD_FIELD_UINT32(payload, 0x00000005, 0x000493e0);
 376
 377     WRITE_HTTP_PAYLOAD_FIELD_UUID(payload, 0x0000000c, *association_uuid);
 378   }
 379
 380   return header;
 381 }
 382
 383 RpcPktHdr *RPCRT4_BuildHttpFlowControlHeader(BOOL server, ULONG bytes_transmitted,
 384                                              ULONG flow_control_increment,
 385                                              const UUID *pipe_uuid)
 386 {
 387   RpcPktHdr *header;
 388   char *payload;
 389
 390   header = RPCRT4_BuildHttpHeader(NDR_LOCAL_DATA_REPRESENTATION, 0x2, 2,
 391                                   5 * sizeof(ULONG) + sizeof(UUID));
 392   if (!header) return NULL;
 393   payload = (char *)(&header->http+1);
 394
 395   WRITE_HTTP_PAYLOAD_FIELD_UINT32(payload, 0x0000000d, (server ? 0x0 : 0x3));
 396
 397   WRITE_HTTP_PAYLOAD_FIELD_FLOW_CONTROL(payload, bytes_transmitted,
 398                                         flow_control_increment, *pipe_uuid);
 399   return header;
 400 }
 401
 402 VOID RPCRT4_FreeHeader(RpcPktHdr *Header)
 403 {
 404   HeapFree(GetProcessHeap(), 0, Header);
 405 }
 406
 407 NCA_STATUS RPC2NCA_STATUS(RPC_STATUS status)
 408 {
 409     switch (status)
 410     {
 411     case ERROR_INVALID_HANDLE:              return NCA_S_FAULT_CONTEXT_MISMATCH;
 412     case ERROR_OUTOFMEMORY:                 return NCA_S_FAULT_REMOTE_NO_MEMORY;
 413     case RPC_S_NOT_LISTENING:               return NCA_S_SERVER_TOO_BUSY;
 414     case RPC_S_UNKNOWN_IF:                  return NCA_S_UNK_IF;
 415     case RPC_S_SERVER_TOO_BUSY:             return NCA_S_SERVER_TOO_BUSY;
 416     case RPC_S_CALL_FAILED:                 return NCA_S_FAULT_UNSPEC;
 417     case RPC_S_CALL_FAILED_DNE:             return NCA_S_MANAGER_NOT_ENTERED;
 418     case RPC_S_PROTOCOL_ERROR:              return NCA_S_PROTO_ERROR;
 419     case RPC_S_UNSUPPORTED_TYPE:            return NCA_S_UNSUPPORTED_TYPE;
 420     case RPC_S_INVALID_TAG:                 return NCA_S_FAULT_INVALID_TAG;
 421     case RPC_S_INVALID_BOUND:               return NCA_S_FAULT_INVALID_BOUND;
 422     case RPC_S_PROCNUM_OUT_OF_RANGE:        return NCA_S_OP_RNG_ERROR;
 423     case RPC_X_SS_HANDLES_MISMATCH:         return NCA_S_FAULT_CONTEXT_MISMATCH;
 424     case RPC_S_CALL_CANCELLED:              return NCA_S_FAULT_CANCEL;
 425     case RPC_S_COMM_FAILURE:                return NCA_S_COMM_FAILURE;
 426     case RPC_X_WRONG_PIPE_ORDER:            return NCA_S_FAULT_PIPE_ORDER;
 427     case RPC_X_PIPE_CLOSED:                 return NCA_S_FAULT_PIPE_CLOSED;
 428     case RPC_X_PIPE_DISCIPLINE_ERROR:       return NCA_S_FAULT_PIPE_DISCIPLINE;
 429     case RPC_X_PIPE_EMPTY:                  return NCA_S_FAULT_PIPE_EMPTY;
 430     case STATUS_FLOAT_DIVIDE_BY_ZERO:       return NCA_S_FAULT_FP_DIV_ZERO;
 431     case STATUS_FLOAT_INVALID_OPERATION:    return NCA_S_FAULT_FP_ERROR;
 432     case STATUS_FLOAT_OVERFLOW:             return NCA_S_FAULT_FP_OVERFLOW;
 433     case STATUS_FLOAT_UNDERFLOW:            return NCA_S_FAULT_FP_UNDERFLOW;
 434     case STATUS_INTEGER_DIVIDE_BY_ZERO:     return NCA_S_FAULT_INT_DIV_BY_ZERO;
 435     case STATUS_INTEGER_OVERFLOW:           return NCA_S_FAULT_INT_OVERFLOW;
 436     default:                                return status;
 437     }
 438 }
 439
 440 static RPC_STATUS NCA2RPC_STATUS(NCA_STATUS status)
 441 {
 442     switch (status)
 443     {
 444     case NCA_S_COMM_FAILURE:            return RPC_S_COMM_FAILURE;
 445     case NCA_S_OP_RNG_ERROR:            return RPC_S_PROCNUM_OUT_OF_RANGE;
 446     case NCA_S_UNK_IF:                  return RPC_S_UNKNOWN_IF;
 447     case NCA_S_YOU_CRASHED:             return RPC_S_CALL_FAILED;
 448     case NCA_S_PROTO_ERROR:             return RPC_S_PROTOCOL_ERROR;
 449     case NCA_S_OUT_ARGS_TOO_BIG:        return ERROR_NOT_ENOUGH_SERVER_MEMORY;
 450     case NCA_S_SERVER_TOO_BUSY:         return RPC_S_SERVER_TOO_BUSY;
 451     case NCA_S_UNSUPPORTED_TYPE:        return RPC_S_UNSUPPORTED_TYPE;
 452     case NCA_S_FAULT_INT_DIV_BY_ZERO:   return RPC_S_ZERO_DIVIDE;
 453     case NCA_S_FAULT_ADDR_ERROR:        return RPC_S_ADDRESS_ERROR;
 454     case NCA_S_FAULT_FP_DIV_ZERO:       return RPC_S_FP_DIV_ZERO;
 455     case NCA_S_FAULT_FP_UNDERFLOW:      return RPC_S_FP_UNDERFLOW;
 456     case NCA_S_FAULT_FP_OVERFLOW:       return RPC_S_FP_OVERFLOW;
 457     case NCA_S_FAULT_INVALID_TAG:       return RPC_S_INVALID_TAG;
 458     case NCA_S_FAULT_INVALID_BOUND:     return RPC_S_INVALID_BOUND;
 459     case NCA_S_RPC_VERSION_MISMATCH:    return RPC_S_PROTOCOL_ERROR;
 460     case NCA_S_UNSPEC_REJECT:           return RPC_S_CALL_FAILED_DNE;
 461     case NCA_S_BAD_ACTID:               return RPC_S_CALL_FAILED_DNE;
 462     case NCA_S_WHO_ARE_YOU_FAILED:      return RPC_S_CALL_FAILED;
 463     case NCA_S_MANAGER_NOT_ENTERED:     return RPC_S_CALL_FAILED_DNE;
 464     case NCA_S_FAULT_CANCEL:            return RPC_S_CALL_CANCELLED;
 465     case NCA_S_FAULT_ILL_INST:          return RPC_S_ADDRESS_ERROR;
 466     case NCA_S_FAULT_FP_ERROR:          return RPC_S_FP_OVERFLOW;
 467     case NCA_S_FAULT_INT_OVERFLOW:      return RPC_S_ADDRESS_ERROR;
 468     case NCA_S_FAULT_UNSPEC:            return RPC_S_CALL_FAILED;
 469     case NCA_S_FAULT_PIPE_EMPTY:        return RPC_X_PIPE_EMPTY;
 470     case NCA_S_FAULT_PIPE_CLOSED:       return RPC_X_PIPE_CLOSED;
 471     case NCA_S_FAULT_PIPE_ORDER:        return RPC_X_WRONG_PIPE_ORDER;
 472     case NCA_S_FAULT_PIPE_DISCIPLINE:   return RPC_X_PIPE_DISCIPLINE_ERROR;
 473     case NCA_S_FAULT_PIPE_COMM_ERROR:   return RPC_S_COMM_FAILURE;
 474     case NCA_S_FAULT_PIPE_MEMORY:       return ERROR_OUTOFMEMORY;
 475     case NCA_S_FAULT_CONTEXT_MISMATCH:  return ERROR_INVALID_HANDLE;
 476     case NCA_S_FAULT_REMOTE_NO_MEMORY:  return ERROR_NOT_ENOUGH_SERVER_MEMORY;
 477     default:                            return status;
 478     }
 479 }
 480
 481 /* assumes the common header fields have already been validated */
 482 BOOL RPCRT4_IsValidHttpPacket(RpcPktHdr *hdr, unsigned char *data,
 483                               unsigned short data_len)
 484 {
 485   unsigned short i;
 486   BYTE *p = data;
 487
 488   for (i = 0; i < hdr->http.num_data_items; i++)
 489   {
 490     ULONG type;
 491
 492     if (data_len < sizeof(ULONG))
 493       return FALSE;
 494
 495     type = *(ULONG *)p;
 496     p += sizeof(ULONG);
 497     data_len -= sizeof(ULONG);
 498
 499     switch (type)
 500     {
 501       case 0x3:
 502       case 0xc:
 503         if (data_len < sizeof(GUID))
 504           return FALSE;
 505         p += sizeof(GUID);
 506         data_len -= sizeof(GUID);
 507         break;
 508       case 0x0:
 509       case 0x2:
 510       case 0x4:
 511       case 0x5:
 512       case 0x6:
 513       case 0xd:
 514         if (data_len < sizeof(ULONG))
 515           return FALSE;
 516         p += sizeof(ULONG);
 517         data_len -= sizeof(ULONG);
 518         break;
 519       case 0x1:
 520         if (data_len < 24)
 521           return FALSE;
 522         p += 24;
 523         data_len -= 24;
 524         break;
 525       default:
 526         FIXME("unimplemented type 0x%x\n", type);
 527         break;
 528     }
 529   }
 530   return TRUE;
 531 }
 532
 533 /* assumes the HTTP packet has been validated */
 534 static unsigned char *RPCRT4_NextHttpHeaderField(unsigned char *data)
 535 {
 536   ULONG type;
 537
 538   type = *(ULONG *)data;
 539   data += sizeof(ULONG);
 540
 541   switch (type)
 542   {
 543     case 0x3:
 544     case 0xc:
 545       return data + sizeof(GUID);
 546     case 0x0:
 547     case 0x2:
 548     case 0x4:
 549     case 0x5:
 550     case 0x6:
 551     case 0xd:
 552       return data + sizeof(ULONG);
 553     case 0x1:
 554       return data + 24;
 555     default:
 556       FIXME("unimplemented type 0x%x\n", type);
 557       return data;
 558   }
 559 }
 560
 561 #define READ_HTTP_PAYLOAD_FIELD_TYPE(data) *(ULONG *)(data)
 562 #define GET_HTTP_PAYLOAD_FIELD_DATA(data) ((data) + sizeof(ULONG))
 563
 564 /* assumes the HTTP packet has been validated */
 565 RPC_STATUS RPCRT4_ParseHttpPrepareHeader1(RpcPktHdr *header,
 566                                           unsigned char *data, ULONG *field1)
 567 {
 568   ULONG type;
 569   if (header->http.flags != 0x0)
 570   {
 571     ERR("invalid flags 0x%x\n", header->http.flags);
 572     return RPC_S_PROTOCOL_ERROR;
 573   }
 574   if (header->http.num_data_items != 1)
 575   {
 576     ERR("invalid number of data items %d\n", header->http.num_data_items);
 577     return RPC_S_PROTOCOL_ERROR;
 578   }
 579   type = READ_HTTP_PAYLOAD_FIELD_TYPE(data);
 580   if (type != 0x00000002)
 581   {
 582     ERR("invalid type 0x%08x\n", type);
 583     return RPC_S_PROTOCOL_ERROR;
 584   }
 585   *field1 = *(ULONG *)GET_HTTP_PAYLOAD_FIELD_DATA(data);
 586   return RPC_S_OK;
 587 }
 588
 589 /* assumes the HTTP packet has been validated */
 590 RPC_STATUS RPCRT4_ParseHttpPrepareHeader2(RpcPktHdr *header,
 591                                           unsigned char *data, ULONG *field1,
 592                                           ULONG *bytes_until_next_packet,
 593                                           ULONG *field3)
 594 {
 595   ULONG type;
 596   if (header->http.flags != 0x0)
 597   {
 598     ERR("invalid flags 0x%x\n", header->http.flags);
 599     return RPC_S_PROTOCOL_ERROR;
 600   }
 601   if (header->http.num_data_items != 3)
 602   {
 603     ERR("invalid number of data items %d\n", header->http.num_data_items);
 604     return RPC_S_PROTOCOL_ERROR;
 605   }
 606
 607   type = READ_HTTP_PAYLOAD_FIELD_TYPE(data);
 608   if (type != 0x00000006)
 609   {
 610     ERR("invalid type for field 1: 0x%08x\n", type);
 611     return RPC_S_PROTOCOL_ERROR;
 612   }
 613   *field1 = *(ULONG *)GET_HTTP_PAYLOAD_FIELD_DATA(data);
 614   data = RPCRT4_NextHttpHeaderField(data);
 615
 616   type = READ_HTTP_PAYLOAD_FIELD_TYPE(data);
 617   if (type != 0x00000000)
 618   {
 619     ERR("invalid type for field 2: 0x%08x\n", type);
 620     return RPC_S_PROTOCOL_ERROR;
 621   }
 622   *bytes_until_next_packet = *(ULONG *)GET_HTTP_PAYLOAD_FIELD_DATA(data);
 623   data = RPCRT4_NextHttpHeaderField(data);
 624
 625   type = READ_HTTP_PAYLOAD_FIELD_TYPE(data);
 626   if (type != 0x00000002)
 627   {
 628     ERR("invalid type for field 3: 0x%08x\n", type);
 629     return RPC_S_PROTOCOL_ERROR;
 630   }
 631   *field3 = *(ULONG *)GET_HTTP_PAYLOAD_FIELD_DATA(data);
 632
 633   return RPC_S_OK;
 634 }
 635
 636 RPC_STATUS RPCRT4_ParseHttpFlowControlHeader(RpcPktHdr *header,
 637                                              unsigned char *data, BOOL server,
 638                                              ULONG *bytes_transmitted,
 639                                              ULONG *flow_control_increment,
 640                                              UUID *pipe_uuid)
 641 {
 642   ULONG type;
 643   if (header->http.flags != 0x2)
 644   {
 645     ERR("invalid flags 0x%x\n", header->http.flags);
 646     return RPC_S_PROTOCOL_ERROR;
 647   }
 648   if (header->http.num_data_items != 2)
 649   {
 650     ERR("invalid number of data items %d\n", header->http.num_data_items);
 651     return RPC_S_PROTOCOL_ERROR;
 652   }
 653
 654   type = READ_HTTP_PAYLOAD_FIELD_TYPE(data);
 655   if (type != 0x0000000d)
 656   {
 657     ERR("invalid type for field 1: 0x%08x\n", type);
 658     return RPC_S_PROTOCOL_ERROR;
 659   }
 660   if (*(ULONG *)GET_HTTP_PAYLOAD_FIELD_DATA(data) != (server ? 0x3 : 0x0))
 661   {
 662     ERR("invalid type for 0xd field data: 0x%08x\n", *(ULONG *)GET_HTTP_PAYLOAD_FIELD_DATA(data));
 663     return RPC_S_PROTOCOL_ERROR;
 664   }
 665   data = RPCRT4_NextHttpHeaderField(data);
 666
 667   type = READ_HTTP_PAYLOAD_FIELD_TYPE(data);
 668   if (type != 0x00000001)
 669   {
 670     ERR("invalid type for field 2: 0x%08x\n", type);
 671     return RPC_S_PROTOCOL_ERROR;
 672   }
 673   *bytes_transmitted = *(ULONG *)GET_HTTP_PAYLOAD_FIELD_DATA(data);
 674   *flow_control_increment = *(ULONG *)(GET_HTTP_PAYLOAD_FIELD_DATA(data) + 4);
 675   *pipe_uuid = *(UUID *)(GET_HTTP_PAYLOAD_FIELD_DATA(data) + 8);
 676
 677   return RPC_S_OK;
 678 }
 679
 680
 681 RPC_STATUS RPCRT4_default_secure_packet(RpcConnection *Connection,
 682     enum secure_packet_direction dir,
 683     RpcPktHdr *hdr, unsigned int hdr_size,
 684     unsigned char *stub_data, unsigned int stub_data_size,
 685     RpcAuthVerifier *auth_hdr,
 686     unsigned char *auth_value, unsigned int auth_value_size)
 687 {
 688     SecBufferDesc message;
 689     SecBuffer buffers[4];
 690     SECURITY_STATUS sec_status;
 691
 692     message.ulVersion = SECBUFFER_VERSION;
 693     message.cBuffers = sizeof(buffers)/sizeof(buffers[0]);
 694     message.pBuffers = buffers;
 695
 696     buffers[0].cbBuffer = hdr_size;
 697     buffers[0].BufferType = SECBUFFER_DATA|SECBUFFER_READONLY_WITH_CHECKSUM;
 698     buffers[0].pvBuffer = hdr;
 699     buffers[1].cbBuffer = stub_data_size;
 700     buffers[1].BufferType = SECBUFFER_DATA;
 701     buffers[1].pvBuffer = stub_data;
 702     buffers[2].cbBuffer = sizeof(*auth_hdr);
 703     buffers[2].BufferType = SECBUFFER_DATA|SECBUFFER_READONLY_WITH_CHECKSUM;
 704     buffers[2].pvBuffer = auth_hdr;
 705     buffers[3].cbBuffer = auth_value_size;
 706     buffers[3].BufferType = SECBUFFER_TOKEN;
 707     buffers[3].pvBuffer = auth_value;
 708
 709     if (dir == SECURE_PACKET_SEND)
 710     {
 711         if ((auth_hdr->auth_level == RPC_C_AUTHN_LEVEL_PKT_PRIVACY) && packet_has_body(hdr))
 712         {
 713             sec_status = EncryptMessage(&Connection->ctx, 0, &message, 0 /* FIXME */);
 714             if (sec_status != SEC_E_OK)
 715             {
 716                 ERR("EncryptMessage failed with 0x%08x\n", sec_status);
 717                 return RPC_S_SEC_PKG_ERROR;
 718             }
 719         }
 720         else if (auth_hdr->auth_level != RPC_C_AUTHN_LEVEL_NONE)
 721         {
 722             sec_status = MakeSignature(&Connection->ctx, 0, &message, 0 /* FIXME */);
 723             if (sec_status != SEC_E_OK)
 724             {
 725                 ERR("MakeSignature failed with 0x%08x\n", sec_status);
 726                 return RPC_S_SEC_PKG_ERROR;
 727             }
 728         }
 729     }
 730     else if (dir == SECURE_PACKET_RECEIVE)
 731     {
 732         if ((auth_hdr->auth_level == RPC_C_AUTHN_LEVEL_PKT_PRIVACY) && packet_has_body(hdr))
 733         {
 734             sec_status = DecryptMessage(&Connection->ctx, &message, 0 /* FIXME */, 0);
 735             if (sec_status != SEC_E_OK)
 736             {
 737                 ERR("DecryptMessage failed with 0x%08x\n", sec_status);
 738                 return RPC_S_SEC_PKG_ERROR;
 739             }
 740         }
 741         else if (auth_hdr->auth_level != RPC_C_AUTHN_LEVEL_NONE)
 742         {
 743             sec_status = VerifySignature(&Connection->ctx, &message, 0 /* FIXME */, NULL);
 744             if (sec_status != SEC_E_OK)
 745             {
 746                 ERR("VerifySignature failed with 0x%08x\n", sec_status);
 747                 return RPC_S_SEC_PKG_ERROR;
 748             }
 749         }
 750     }
 751
 752     return RPC_S_OK;
 753 }
 754
 755 /***********************************************************************
 756  *           RPCRT4_SendWithAuth (internal)
 757  *
 758  * Transmit a packet with authorization data over connection in acceptable fragments.
 759  */
 760 RPC_STATUS RPCRT4_SendWithAuth(RpcConnection *Connection, RpcPktHdr *Header,
 761                                void *Buffer, unsigned int BufferLength,
 762                                const void *Auth, unsigned int AuthLength)
 763 {
 764   PUCHAR buffer_pos;
 765   DWORD hdr_size;
 766   LONG count;
 767   unsigned char *pkt;
 768   LONG alen;
 769   RPC_STATUS status;
 770
 771   RPCRT4_SetThreadCurrentConnection(Connection);
 772
 773   buffer_pos = Buffer;
 774   /* The packet building functions save the packet header size, so we can use it. */
 775   hdr_size = Header->common.frag_len;
 776   if (AuthLength)
 777     Header->common.auth_len = AuthLength;
 778   else if (Connection->AuthInfo && packet_has_auth_verifier(Header))
 779   {
 780     if ((Connection->AuthInfo->AuthnLevel == RPC_C_AUTHN_LEVEL_PKT_PRIVACY) && packet_has_body(Header))
 781       Header->common.auth_len = Connection->encryption_auth_len;
 782     else
 783       Header->common.auth_len = Connection->signature_auth_len;
 784   }
 785   else
 786     Header->common.auth_len = 0;
 787   Header->common.flags |= RPC_FLG_FIRST;
 788   Header->common.flags &= ~RPC_FLG_LAST;
 789
 790   alen = RPC_AUTH_VERIFIER_LEN(&Header->common);
 791
 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    if (pkt_size <= Connection->MaxTransmissionSize) {
 798      Header->common.flags |= RPC_FLG_LAST;
 799      Header->common.frag_len = pkt_size;
 800     } else {
 801       auth_pad_len = 0;
 802       /* make sure packet payload will be a multiple of 16 */
 803       Header->common.frag_len =
 804         ((Connection->MaxTransmissionSize - hdr_size - alen) & ~(AUTH_ALIGNMENT-1)) +
 805         hdr_size + alen;
 806     }
 807
 808     pkt = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, Header->common.frag_len);
 809
 810     memcpy(pkt, Header, hdr_size);
 811
 812     /* fragment consisted of header only and is the last one */
 813     if (hdr_size == Header->common.frag_len)
 814       goto write;
 815
 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       auth_hdr->auth_type = Connection->AuthInfo->AuthnSvc;
 824       auth_hdr->auth_level = Connection->AuthInfo->AuthnLevel;
 825       auth_hdr->auth_pad_length = auth_pad_len;
 826       auth_hdr->auth_reserved = 0;
 827       /* a unique number... */
 828       auth_hdr->auth_context_id = Connection->auth_context_id;
 829
 830       if (AuthLength)
 831         memcpy(auth_hdr + 1, Auth, AuthLength);
 832       else
 833       {
 834         status = rpcrt4_conn_secure_packet(Connection, SECURE_PACKET_SEND,
 835             (RpcPktHdr *)pkt, hdr_size,
 836             pkt + hdr_size, Header->common.frag_len - hdr_size - alen,
 837             auth_hdr,
 838             (unsigned char *)(auth_hdr + 1), Header->common.auth_len);
 839         if (status != RPC_S_OK)
 840         {
 841           HeapFree(GetProcessHeap(), 0, pkt);
 842           RPCRT4_SetThreadCurrentConnection(NULL);
 843           return status;
 844         }
 845       }
 846     }
 847
 848 write:
 849     count = rpcrt4_conn_write(Connection, pkt, Header->common.frag_len);
 850     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     buffer_pos += Header->common.frag_len - hdr_size - alen - auth_pad_len;
 858     BufferLength -= Header->common.frag_len - hdr_size - alen - auth_pad_len;
 859     Header->common.flags &= ~RPC_FLG_FIRST;
 860   }
 861
 862   RPCRT4_SetThreadCurrentConnection(NULL);
 863   return RPC_S_OK;
 864 }
 865
 866 /***********************************************************************
 867  *           RPCRT4_default_authorize (internal)
 868  *
 869  * Authorize a client connection.
 870  */
 871 RPC_STATUS RPCRT4_default_authorize(RpcConnection *conn, BOOL first_time,
 872                                     unsigned char *in_buffer,
 873                                     unsigned int in_size,
 874                                     unsigned char *out_buffer,
 875                                     unsigned int *out_size)
 876 {
 877   SECURITY_STATUS r;
 878   SecBufferDesc out_desc;
 879   SecBufferDesc inp_desc;
 880   SecPkgContext_Sizes secctx_sizes;
 881   BOOL continue_needed;
 882   ULONG context_req;
 883   SecBuffer in, out;
 884
 885   if (!out_buffer)
 886   {
 887     *out_size = conn->AuthInfo->cbMaxToken;
 888     return RPC_S_OK;
 889   }
 890
 891   in.BufferType = SECBUFFER_TOKEN;
 892   in.pvBuffer = in_buffer;
 893   in.cbBuffer = in_size;
 894
 895   out.BufferType = SECBUFFER_TOKEN;
 896   out.pvBuffer = out_buffer;
 897   out.cbBuffer = *out_size;
 898
 899   out_desc.ulVersion = 0;
 900   out_desc.cBuffers = 1;
 901   out_desc.pBuffers = &out;
 902
 903   inp_desc.ulVersion = 0;
 904   inp_desc.cBuffers = 1;
 905   inp_desc.pBuffers = &in;
 906
 907   if (conn->server)
 908   {
 909       context_req = ASC_REQ_CONNECTION | ASC_REQ_USE_DCE_STYLE |
 910                     ASC_REQ_DELEGATE;
 911
 912       if (conn->AuthInfo->AuthnLevel == RPC_C_AUTHN_LEVEL_PKT_INTEGRITY)
 913           context_req |= ASC_REQ_INTEGRITY;
 914       else if (conn->AuthInfo->AuthnLevel == RPC_C_AUTHN_LEVEL_PKT_PRIVACY)
 915           context_req |= ASC_REQ_CONFIDENTIALITY | ASC_REQ_INTEGRITY;
 916
 917       r = AcceptSecurityContext(&conn->AuthInfo->cred,
 918                                 first_time ? NULL : &conn->ctx,
 919                                 &inp_desc, context_req, SECURITY_NETWORK_DREP,
 920                                 &conn->ctx,
 921                                 &out_desc, &conn->attr, &conn->exp);
 922       if (r == SEC_E_OK || r == SEC_I_COMPLETE_NEEDED)
 923       {
 924           /* authorisation done, so nothing more to send */
 925           out.cbBuffer = 0;
 926       }
 927   }
 928   else
 929   {
 930       context_req = ISC_REQ_CONNECTION | ISC_REQ_USE_DCE_STYLE |
 931                     ISC_REQ_MUTUAL_AUTH | ISC_REQ_DELEGATE;
 932
 933       if (conn->AuthInfo->AuthnLevel == RPC_C_AUTHN_LEVEL_PKT_INTEGRITY)
 934           context_req |= ISC_REQ_INTEGRITY;
 935       else if (conn->AuthInfo->AuthnLevel == RPC_C_AUTHN_LEVEL_PKT_PRIVACY)
 936           context_req |= ISC_REQ_CONFIDENTIALITY | ISC_REQ_INTEGRITY;
 937
 938       r = InitializeSecurityContextW(&conn->AuthInfo->cred,
 939                                      first_time ? NULL: &conn->ctx,
 940                                      first_time ? conn->AuthInfo->server_principal_name : NULL,
 941                                      context_req, 0, SECURITY_NETWORK_DREP,
 942                                      first_time ? NULL : &inp_desc, 0, &conn->ctx,
 943                                      &out_desc, &conn->attr, &conn->exp);
 944   }
 945   if (FAILED(r))
 946   {
 947       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   continue_needed = ((r == SEC_I_CONTINUE_NEEDED) ||
 953                      (r == SEC_I_COMPLETE_AND_CONTINUE));
 954
 955   if ((r == SEC_I_COMPLETE_NEEDED) || (r == SEC_I_COMPLETE_AND_CONTINUE))
 956   {
 957       TRACE("complete needed\n");
 958       r = CompleteAuthToken(&conn->ctx, &out_desc);
 959       if (FAILED(r))
 960       {
 961           WARN("CompleteAuthToken failed with error 0x%08x\n", r);
 962           goto failed;
 963       }
 964   }
 965
 966   TRACE("cbBuffer = %d\n", out.cbBuffer);
 967
 968   if (!continue_needed)
 969   {
 970       r = QueryContextAttributesA(&conn->ctx, SECPKG_ATTR_SIZES, &secctx_sizes);
 971       if (FAILED(r))
 972       {
 973           WARN("QueryContextAttributes failed with error 0x%08x\n", r);
 974           goto failed;
 975       }
 976       conn->signature_auth_len = secctx_sizes.cbMaxSignature;
 977       conn->encryption_auth_len = secctx_sizes.cbSecurityTrailer;
 978   }
 979
 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 RPC_STATUS RPCRT4_ClientConnectionAuth(RpcConnection* conn, BYTE *challenge,
 992                                        ULONG count)
 993 {
 994   RpcPktHdr *resp_hdr;
 995   RPC_STATUS status;
 996   unsigned char *out_buffer;
 997   unsigned int out_len = 0;
 998
 999   TRACE("challenge %s, %d bytes\n", challenge, count);
1000
1001   status = rpcrt4_conn_authorize(conn, FALSE, challenge, count, NULL, &out_len);
1002   if (status) return status;
1003   out_buffer = HeapAlloc(GetProcessHeap(), 0, out_len);
1004   if (!out_buffer) return RPC_S_OUT_OF_RESOURCES;
1005   status = rpcrt4_conn_authorize(conn, FALSE, challenge, count, out_buffer, &out_len);
1006   if (status) return status;
1007
1008   resp_hdr = RPCRT4_BuildAuthHeader(NDR_LOCAL_DATA_REPRESENTATION);
1009
1010   if (resp_hdr)
1011     status = RPCRT4_SendWithAuth(conn, resp_hdr, NULL, 0, out_buffer, out_len);
1012   else
1013     status = RPC_S_OUT_OF_RESOURCES;
1014
1015   HeapFree(GetProcessHeap(), 0, out_buffer);
1016   RPCRT4_FreeHeader(resp_hdr);
1017
1018   return status;
1019 }
1020
1021 /***********************************************************************
1022  *           RPCRT4_ServerConnectionAuth (internal)
1023  */
1024 RPC_STATUS RPCRT4_ServerConnectionAuth(RpcConnection* conn,
1025                                        BOOL start,
1026                                        RpcAuthVerifier *auth_data_in,
1027                                        ULONG auth_length_in,
1028                                        unsigned char **auth_data_out,
1029                                        ULONG *auth_length_out)
1030 {
1031     unsigned char *out_buffer;
1032     unsigned int out_size;
1033     RPC_STATUS status;
1034
1035     if (start)
1036     {
1037         /* remove any existing authentication information */
1038         if (conn->AuthInfo)
1039         {
1040             RpcAuthInfo_Release(conn->AuthInfo);
1041             conn->AuthInfo = NULL;
1042         }
1043         if (SecIsValidHandle(&conn->ctx))
1044         {
1045             DeleteSecurityContext(&conn->ctx);
1046             SecInvalidateHandle(&conn->ctx);
1047         }
1048         if (auth_length_in >= sizeof(RpcAuthVerifier))
1049         {
1050             CredHandle cred;
1051             TimeStamp exp;
1052             ULONG max_token;
1053
1054             status = RPCRT4_ServerGetRegisteredAuthInfo(
1055                 auth_data_in->auth_type, &cred, &exp, &max_token);
1056             if (status != RPC_S_OK)
1057             {
1058                 ERR("unknown authentication service %u\n", auth_data_in->auth_type);
1059                 return status;
1060             }
1061
1062             status = RpcAuthInfo_Create(auth_data_in->auth_level,
1063                                         auth_data_in->auth_type, cred, exp,
1064                                         max_token, NULL, &conn->AuthInfo);
1065             if (status != RPC_S_OK)
1066                 return status;
1067
1068             /* FIXME: should auth_data_in->auth_context_id be checked in the !start case? */
1069             conn->auth_context_id = auth_data_in->auth_context_id;
1070         }
1071     }
1072
1073     if (auth_length_in < sizeof(RpcAuthVerifier))
1074         return RPC_S_OK;
1075
1076     if (!conn->AuthInfo)
1077         /* should have filled in authentication info by now */
1078         return RPC_S_PROTOCOL_ERROR;
1079
1080     status = rpcrt4_conn_authorize(
1081         conn, start, (unsigned char *)(auth_data_in + 1),
1082         auth_length_in - sizeof(RpcAuthVerifier), NULL, &out_size);
1083     if (status) return status;
1084
1085     out_buffer = HeapAlloc(GetProcessHeap(), 0, out_size);
1086     if (!out_buffer) return RPC_S_OUT_OF_RESOURCES;
1087
1088     status = rpcrt4_conn_authorize(
1089         conn, start, (unsigned char *)(auth_data_in + 1),
1090         auth_length_in - sizeof(RpcAuthVerifier), out_buffer, &out_size);
1091     if (status != RPC_S_OK)
1092     {
1093         HeapFree(GetProcessHeap(), 0, out_buffer);
1094         return status;
1095     }
1096
1097     if (out_size && !auth_length_out)
1098     {
1099         ERR("expected authentication to be complete but SSP returned data of "
1100             "%u bytes to be sent back to client\n", out_size);
1101         HeapFree(GetProcessHeap(), 0, out_buffer);
1102         return RPC_S_SEC_PKG_ERROR;
1103     }
1104     else
1105     {
1106         *auth_data_out = out_buffer;
1107         *auth_length_out = out_size;
1108     }
1109
1110     return status;
1111 }
1112
1113 /***********************************************************************
1114  *           RPCRT4_default_is_authorized (internal)
1115  *
1116  * Has a connection started the process of authorizing with the server?
1117  */
1118 BOOL RPCRT4_default_is_authorized(RpcConnection *Connection)
1119 {
1120     return Connection->AuthInfo && SecIsValidHandle(&Connection->ctx);
1121 }
1122
1123 /***********************************************************************
1124  *           RPCRT4_default_impersonate_client (internal)
1125  *
1126  */
1127 RPC_STATUS RPCRT4_default_impersonate_client(RpcConnection *conn)
1128 {
1129     SECURITY_STATUS sec_status;
1130
1131     TRACE("(%p)\n", conn);
1132
1133     if (!conn->AuthInfo || !SecIsValidHandle(&conn->ctx))
1134         return RPC_S_NO_CONTEXT_AVAILABLE;
1135     sec_status = ImpersonateSecurityContext(&conn->ctx);
1136     if (sec_status != SEC_E_OK)
1137         WARN("ImpersonateSecurityContext returned 0x%08x\n", sec_status);
1138     switch (sec_status)
1139     {
1140     case SEC_E_UNSUPPORTED_FUNCTION:
1141         return RPC_S_CANNOT_SUPPORT;
1142     case SEC_E_NO_IMPERSONATION:
1143         return RPC_S_NO_CONTEXT_AVAILABLE;
1144     case SEC_E_OK:
1145         return RPC_S_OK;
1146     default:
1147         return RPC_S_SEC_PKG_ERROR;
1148     }
1149 }
1150
1151 /***********************************************************************
1152  *           RPCRT4_default_revert_to_self (internal)
1153  *
1154  */
1155 RPC_STATUS RPCRT4_default_revert_to_self(RpcConnection *conn)
1156 {
1157     SECURITY_STATUS sec_status;
1158
1159     TRACE("(%p)\n", conn);
1160
1161     if (!conn->AuthInfo || !SecIsValidHandle(&conn->ctx))
1162         return RPC_S_NO_CONTEXT_AVAILABLE;
1163     sec_status = RevertSecurityContext(&conn->ctx);
1164     if (sec_status != SEC_E_OK)
1165         WARN("RevertSecurityContext returned 0x%08x\n", sec_status);
1166     switch (sec_status)
1167     {
1168     case SEC_E_UNSUPPORTED_FUNCTION:
1169         return RPC_S_CANNOT_SUPPORT;
1170     case SEC_E_NO_IMPERSONATION:
1171         return RPC_S_NO_CONTEXT_AVAILABLE;
1172     case SEC_E_OK:
1173         return RPC_S_OK;
1174     default:
1175         return RPC_S_SEC_PKG_ERROR;
1176     }
1177 }
1178
1179 /***********************************************************************
1180  *           RPCRT4_default_inquire_auth_client (internal)
1181  *
1182  * Default function to retrieve the authentication details that the client
1183  * is using to call the server.
1184  */
1185 RPC_STATUS RPCRT4_default_inquire_auth_client(
1186     RpcConnection *conn, RPC_AUTHZ_HANDLE *privs, RPC_WSTR *server_princ_name,
1187     ULONG *authn_level, ULONG *authn_svc, ULONG *authz_svc, ULONG flags)
1188 {
1189     if (!conn->AuthInfo) return RPC_S_BINDING_HAS_NO_AUTH;
1190
1191     if (privs)
1192     {
1193         FIXME("privs not implemented\n");
1194         *privs = NULL;
1195     }
1196     if (server_princ_name)
1197     {
1198         *server_princ_name = RPCRT4_strdupW(conn->AuthInfo->server_principal_name);
1199         if (!*server_princ_name) return ERROR_OUTOFMEMORY;
1200     }
1201     if (authn_level) *authn_level = conn->AuthInfo->AuthnLevel;
1202     if (authn_svc) *authn_svc = conn->AuthInfo->AuthnSvc;
1203     if (authz_svc)
1204     {
1205         FIXME("authorization service not implemented\n");
1206         *authz_svc = RPC_C_AUTHZ_NONE;
1207     }
1208     if (flags)
1209         FIXME("flags 0x%x not implemented\n", flags);
1210
1211     return RPC_S_OK;
1212 }
1213
1214 /***********************************************************************
1215  *           RPCRT4_Send (internal)
1216  *
1217  * Transmit a packet over connection in acceptable fragments.
1218  */
1219 RPC_STATUS RPCRT4_Send(RpcConnection *Connection, RpcPktHdr *Header,
1220                        void *Buffer, unsigned int BufferLength)
1221 {
1222   RPC_STATUS r;
1223
1224   if (packet_does_auth_negotiation(Header) &&
1225       Connection->AuthInfo &&
1226       !rpcrt4_conn_is_authorized(Connection))
1227   {
1228       unsigned int out_size = 0;
1229       unsigned char *out_buffer;
1230
1231       r = rpcrt4_conn_authorize(Connection, TRUE, NULL, 0, NULL, &out_size);
1232       if (r != RPC_S_OK) return r;
1233
1234       out_buffer = HeapAlloc(GetProcessHeap(), 0, out_size);
1235       if (!out_buffer) return RPC_S_OUT_OF_RESOURCES;
1236
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           r = RPCRT4_SendWithAuth(Connection, Header, Buffer, BufferLength, out_buffer, out_size);
1241
1242       HeapFree(GetProcessHeap(), 0, out_buffer);
1243   }
1244   else
1245     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   DWORD hdr_length;
1254
1255   /* verify if the header really makes sense */
1256   if (hdr->rpc_ver != RPC_VER_MAJOR ||
1257       hdr->rpc_ver_minor != RPC_VER_MINOR)
1258   {
1259     WARN("unhandled packet version\n");
1260     return RPC_S_PROTOCOL_ERROR;
1261   }
1262
1263   hdr_length = RPCRT4_GetHeaderSize((const RpcPktHdr*)hdr);
1264   if (hdr_length == 0)
1265   {
1266     WARN("header length == 0\n");
1267     return RPC_S_PROTOCOL_ERROR;
1268   }
1269
1270   if (hdr->frag_len < hdr_length)
1271   {
1272     WARN("bad frag length %d\n", hdr->frag_len);
1273     return RPC_S_PROTOCOL_ERROR;
1274   }
1275
1276   return RPC_S_OK;
1277 }
1278
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   DWORD hdr_length;
1288   LONG dwRead;
1289   RpcPktCommonHdr common_hdr;
1290
1291   *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     goto fail;
1302   }
1303
1304   status = RPCRT4_ValidateCommonHeader(&common_hdr);
1305   if (status != RPC_S_OK) goto fail;
1306
1307   hdr_length = RPCRT4_GetHeaderSize((RpcPktHdr*)&common_hdr);
1308   if (hdr_length == 0) {
1309     WARN("header length == 0\n");
1310     status = RPC_S_PROTOCOL_ERROR;
1311     goto fail;
1312   }
1313
1314   *Header = HeapAlloc(GetProcessHeap(), 0, hdr_length);
1315   memcpy(*Header, &common_hdr, sizeof(common_hdr));
1316
1317   /* 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     goto fail;
1323   }
1324
1325   if (common_hdr.frag_len - hdr_length)
1326   {
1327     *Payload = HeapAlloc(GetProcessHeap(), 0, common_hdr.frag_len - hdr_length);
1328     if (!*Payload)
1329     {
1330       status = RPC_S_OUT_OF_RESOURCES;
1331       goto fail;
1332     }
1333
1334     dwRead = rpcrt4_conn_read(Connection, *Payload, common_hdr.frag_len - hdr_length);
1335     if (dwRead != common_hdr.frag_len - hdr_length)
1336     {
1337       WARN("bad data length, %d/%d\n", dwRead, common_hdr.frag_len - hdr_length);
1338       status = RPC_S_CALL_FAILED;
1339       goto fail;
1340     }
1341   }
1342   else
1343     *Payload = NULL;
1344
1345   /* success */
1346   status = RPC_S_OK;
1347
1348 fail:
1349   if (status != RPC_S_OK) {
1350     RPCRT4_FreeHeader(*Header);
1351     *Header = NULL;
1352     HeapFree(GetProcessHeap(), 0, *Payload);
1353     *Payload = NULL;
1354   }
1355   return status;
1356 }
1357
1358 static RPC_STATUS RPCRT4_receive_fragment(RpcConnection *Connection, RpcPktHdr **Header, void **Payload)
1359 {
1360     if (Connection->ops->receive_fragment)
1361         return Connection->ops->receive_fragment(Connection, Header, Payload);
1362     else
1363         return RPCRT4_default_receive_fragment(Connection, Header, Payload);
1364 }
1365
1366 /***********************************************************************
1367  *           RPCRT4_ReceiveWithAuth (internal)
1368  *
1369  * Receive a packet from connection, merge the fragments and return the auth
1370  * data.
1371  */
1372 RPC_STATUS RPCRT4_ReceiveWithAuth(RpcConnection *Connection, RpcPktHdr **Header,
1373                                   PRPC_MESSAGE pMsg,
1374                                   unsigned char **auth_data_out,
1375                                   ULONG *auth_length_out)
1376 {
1377   RPC_STATUS status;
1378   DWORD hdr_length;
1379   unsigned short first_flag;
1380   ULONG data_length;
1381   ULONG buffer_length;
1382   ULONG auth_length = 0;
1383   unsigned char *auth_data = NULL;
1384   RpcPktHdr *CurrentHeader = NULL;
1385   void *payload = NULL;
1386
1387   *Header = NULL;
1388   pMsg->Buffer = NULL;
1389   if (auth_data_out) *auth_data_out = NULL;
1390   if (auth_length_out) *auth_length_out = 0;
1391
1392   TRACE("(%p, %p, %p, %p)\n", Connection, Header, pMsg, auth_data_out);
1393
1394   RPCRT4_SetThreadCurrentConnection(Connection);
1395
1396   status = RPCRT4_receive_fragment(Connection, Header, &payload);
1397   if (status != RPC_S_OK) goto fail;
1398
1399   hdr_length = RPCRT4_GetHeaderSize(*Header);
1400
1401   /* read packet body */
1402   switch ((*Header)->common.ptype) {
1403   case PKT_RESPONSE:
1404     pMsg->BufferLength = (*Header)->response.alloc_hint;
1405     break;
1406   case PKT_REQUEST:
1407     pMsg->BufferLength = (*Header)->request.alloc_hint;
1408     break;
1409   default:
1410     pMsg->BufferLength = (*Header)->common.frag_len - hdr_length - RPC_AUTH_VERIFIER_LEN(&(*Header)->common);
1411   }
1412
1413   TRACE("buffer length = %u\n", pMsg->BufferLength);
1414
1415   pMsg->Buffer = I_RpcAllocate(pMsg->BufferLength);
1416   if (!pMsg->Buffer)
1417   {
1418     status = ERROR_OUTOFMEMORY;
1419     goto fail;
1420   }
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       goto fail;
1429     }
1430   }
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     /* verify header fields */
1438
1439     if ((CurrentHeader->common.frag_len < hdr_length) ||
1440         (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       status = RPC_S_PROTOCOL_ERROR;
1444       goto fail;
1445     }
1446
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       status = RPC_S_PROTOCOL_ERROR;
1451       goto fail;
1452     }
1453
1454     if ((CurrentHeader->common.flags & RPC_FLG_FIRST) != first_flag) {
1455       TRACE("invalid packet flags\n");
1456       status = RPC_S_PROTOCOL_ERROR;
1457       goto fail;
1458     }
1459
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         data_length + buffer_length);
1464       pMsg->BufferLength = data_length + buffer_length;
1465       status = I_RpcReAllocateBuffer(pMsg);
1466       if (status != RPC_S_OK) goto fail;
1467     }
1468
1469     memcpy((unsigned char *)pMsg->Buffer + buffer_length, payload, data_length);
1470
1471     if (header_auth_len) {
1472       if (header_auth_len < sizeof(RpcAuthVerifier) ||
1473           header_auth_len > RPC_AUTH_VERIFIER_LEN(&(*Header)->common)) {
1474         WARN("bad auth verifier length %d\n", header_auth_len);
1475         status = RPC_S_PROTOCOL_ERROR;
1476         goto fail;
1477       }
1478
1479       /* FIXME: we should accumulate authentication data for the bind,
1480        * bind_ack, alter_context and alter_context_response if necessary.
1481        * however, the details of how this is done is very sketchy in the
1482        * DCE/RPC spec. for all other packet types that have authentication
1483        * 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       /* these packets are handled specially, not by the generic SecurePacket
1487        * 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             (unsigned char *)pMsg->Buffer + buffer_length, data_length,
1493             (RpcAuthVerifier *)auth_data,
1494             auth_data + sizeof(RpcAuthVerifier),
1495             header_auth_len - sizeof(RpcAuthVerifier));
1496         if (status != RPC_S_OK) goto fail;
1497       }
1498     }
1499
1500     buffer_length += data_length;
1501     if (!(CurrentHeader->common.flags & RPC_FLG_LAST)) {
1502       TRACE("next header\n");
1503
1504       if (*Header != CurrentHeader)
1505       {
1506           RPCRT4_FreeHeader(CurrentHeader);
1507           CurrentHeader = NULL;
1508       }
1509       HeapFree(GetProcessHeap(), 0, payload);
1510       payload = NULL;
1511
1512       status = RPCRT4_receive_fragment(Connection, &CurrentHeader, &payload);
1513       if (status != RPC_S_OK) goto fail;
1514
1515       first_flag = 0;
1516     } else {
1517       break;
1518     }
1519   }
1520   pMsg->BufferLength = buffer_length;
1521
1522   /* success */
1523   status = RPC_S_OK;
1524
1525 fail:
1526   RPCRT4_SetThreadCurrentConnection(NULL);
1527   if (CurrentHeader != *Header)
1528     RPCRT4_FreeHeader(CurrentHeader);
1529   if (status != RPC_S_OK) {
1530     I_RpcFree(pMsg->Buffer);
1531     pMsg->Buffer = NULL;
1532     RPCRT4_FreeHeader(*Header);
1533     *Header = NULL;
1534   }
1535   if (auth_data_out && status == RPC_S_OK) {
1536     *auth_length_out = auth_length;
1537     *auth_data_out = auth_data;
1538   }
1539   else
1540     HeapFree(GetProcessHeap(), 0, auth_data);
1541   HeapFree(GetProcessHeap(), 0, payload);
1542   return status;
1543 }
1544
1545 /***********************************************************************
1546  *           RPCRT4_Receive (internal)
1547  *
1548  * Receive a packet from connection and merge the fragments.
1549  */
1550 static RPC_STATUS RPCRT4_Receive(RpcConnection *Connection, RpcPktHdr **Header,
1551                                  PRPC_MESSAGE pMsg)
1552 {
1553     return RPCRT4_ReceiveWithAuth(Connection, Header, pMsg, NULL, NULL);
1554 }
1555
1556 /***********************************************************************
1557  *           I_RpcNegotiateTransferSyntax [RPCRT4.@]
1558  *
1559  * Negotiates the transfer syntax used by a client connection by connecting
1560  * to the server.
1561  *
1562  * PARAMS
1563  *  pMsg   [I] RPC Message structure.
1564  *  pAsync [I] Asynchronous state to set.
1565  *
1566  * RETURNS
1567  *  Success: RPC_S_OK.
1568  *  Failure: Any error code.
1569  */
1570 RPC_STATUS WINAPI I_RpcNegotiateTransferSyntax(PRPC_MESSAGE pMsg)
1571 {
1572   RpcBinding* bind = pMsg->Handle;
1573   RpcConnection* conn;
1574   RPC_STATUS status = RPC_S_OK;
1575
1576   TRACE("(%p)\n", pMsg);
1577
1578   if (!bind || bind->server)
1579   {
1580     ERR("no binding\n");
1581     return RPC_S_INVALID_BINDING;
1582   }
1583
1584   /* if we already have a connection, we don't need to negotiate again */
1585   if (!pMsg->ReservedForRuntime)
1586   {
1587     RPC_CLIENT_INTERFACE *cif = pMsg->RpcInterfaceInformation;
1588     if (!cif) return RPC_S_INTERFACE_NOT_FOUND;
1589
1590     if (!bind->Endpoint || !bind->Endpoint[0])
1591     {
1592       TRACE("automatically resolving partially bound binding\n");
1593       status = RpcEpResolveBinding(bind, cif);
1594       if (status != RPC_S_OK) return status;
1595     }
1596
1597     status = RPCRT4_OpenBinding(bind, &conn, &cif->TransferSyntax,
1598                                 &cif->InterfaceId);
1599
1600     if (status == RPC_S_OK)
1601     {
1602       pMsg->ReservedForRuntime = conn;
1603       RPCRT4_AddRefBinding(bind);
1604     }
1605   }
1606
1607   return status;
1608 }
1609
1610 /***********************************************************************
1611  *           I_RpcGetBuffer [RPCRT4.@]
1612  *
1613  * Allocates a buffer for use by I_RpcSend or I_RpcSendReceive and binds to the
1614  * server interface.
1615  *
1616  * PARAMS
1617  *  pMsg [I/O] RPC message information.
1618  *
1619  * RETURNS
1620  *  Success: RPC_S_OK.
1621  *  Failure: RPC_S_INVALID_BINDING if pMsg->Handle is invalid.
1622  *           RPC_S_SERVER_UNAVAILABLE if unable to connect to server.
1623  *           ERROR_OUTOFMEMORY if buffer allocation failed.
1624  *
1625  * NOTES
1626  *  The pMsg->BufferLength field determines the size of the buffer to allocate,
1627  *  in bytes.
1628  *
1629  *  Use I_RpcFreeBuffer() to unbind from the server and free the message buffer.
1630  *
1631  * SEE ALSO
1632  *  I_RpcFreeBuffer(), I_RpcSend(), I_RpcReceive(), I_RpcSendReceive().
1633  */
1634 RPC_STATUS WINAPI I_RpcGetBuffer(PRPC_MESSAGE pMsg)
1635 {
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   if (!pMsg->Buffer)
1651     return ERROR_OUTOFMEMORY;
1652
1653   if (!bind->server)
1654   {
1655     status = I_RpcNegotiateTransferSyntax(pMsg);
1656     if (status != RPC_S_OK)
1657       I_RpcFree(pMsg->Buffer);
1658   }
1659   else
1660     status = RPC_S_OK;
1661
1662   return status;
1663 }
1664
1665 /***********************************************************************
1666  *           I_RpcReAllocateBuffer (internal)
1667  */
1668 static RPC_STATUS I_RpcReAllocateBuffer(PRPC_MESSAGE pMsg)
1669 {
1670   TRACE("(%p): BufferLength=%d\n", pMsg, pMsg->BufferLength);
1671   pMsg->Buffer = HeapReAlloc(GetProcessHeap(), 0, pMsg->Buffer, pMsg->BufferLength);
1672
1673   TRACE("Buffer=%p\n", pMsg->Buffer);
1674   return pMsg->Buffer ? RPC_S_OK : ERROR_OUTOFMEMORY;
1675 }
1676
1677 /***********************************************************************
1678  *           I_RpcFreeBuffer [RPCRT4.@]
1679  *
1680  * Frees a buffer allocated by I_RpcGetBuffer or I_RpcReceive and unbinds from
1681  * the server interface.
1682  *
1683  * PARAMS
1684  *  pMsg [I/O] RPC message information.
1685  *
1686  * RETURNS
1687  *  RPC_S_OK.
1688  *
1689  * SEE ALSO
1690  *  I_RpcGetBuffer(), I_RpcReceive().
1691  */
1692 RPC_STATUS WINAPI I_RpcFreeBuffer(PRPC_MESSAGE pMsg)
1693 {
1694   RpcBinding* bind = pMsg->Handle;
1695
1696   TRACE("(%p) Buffer=%p\n", pMsg, pMsg->Buffer);
1697
1698   if (!bind)
1699   {
1700     ERR("no binding\n");
1701     return RPC_S_INVALID_BINDING;
1702   }
1703
1704   if (pMsg->ReservedForRuntime)
1705   {
1706     RpcConnection *conn = pMsg->ReservedForRuntime;
1707     RPCRT4_CloseBinding(bind, conn);
1708     RPCRT4_ReleaseBinding(bind);
1709     pMsg->ReservedForRuntime = NULL;
1710   }
1711   I_RpcFree(pMsg->Buffer);
1712   return RPC_S_OK;
1713 }
1714
1715 static void CALLBACK async_apc_notifier_proc(ULONG_PTR ulParam)
1716 {
1717     RPC_ASYNC_STATE *state = (RPC_ASYNC_STATE *)ulParam;
1718     state->u.APC.NotificationRoutine(state, NULL, state->Event);
1719 }
1720
1721 static DWORD WINAPI async_notifier_proc(LPVOID p)
1722 {
1723     RpcConnection *conn = p;
1724     RPC_ASYNC_STATE *state = conn->async_state;
1725
1726     if (state && conn->ops->wait_for_incoming_data(conn) != -1)
1727     {
1728         state->Event = RpcCallComplete;
1729         switch (state->NotificationType)
1730         {
1731         case RpcNotificationTypeEvent:
1732             TRACE("RpcNotificationTypeEvent %p\n", state->u.hEvent);
1733             SetEvent(state->u.hEvent);
1734             break;
1735         case RpcNotificationTypeApc:
1736             TRACE("RpcNotificationTypeApc %p\n", state->u.APC.hThread);
1737             QueueUserAPC(async_apc_notifier_proc, state->u.APC.hThread, (ULONG_PTR)state);
1738             break;
1739         case RpcNotificationTypeIoc:
1740             TRACE("RpcNotificationTypeIoc %p, 0x%x, 0x%lx, %p\n",
1741                 state->u.IOC.hIOPort, state->u.IOC.dwNumberOfBytesTransferred,
1742                 state->u.IOC.dwCompletionKey, state->u.IOC.lpOverlapped);
1743             PostQueuedCompletionStatus(state->u.IOC.hIOPort,
1744                 state->u.IOC.dwNumberOfBytesTransferred,
1745                 state->u.IOC.dwCompletionKey,
1746                 state->u.IOC.lpOverlapped);
1747             break;
1748         case RpcNotificationTypeHwnd:
1749             TRACE("RpcNotificationTypeHwnd %p 0x%x\n", state->u.HWND.hWnd,
1750                 state->u.HWND.Msg);
1751             PostMessageW(state->u.HWND.hWnd, state->u.HWND.Msg, 0, 0);
1752             break;
1753         case RpcNotificationTypeCallback:
1754             TRACE("RpcNotificationTypeCallback %p\n", state->u.NotificationRoutine);
1755             state->u.NotificationRoutine(state, NULL, state->Event);
1756             break;
1757         case RpcNotificationTypeNone:
1758             TRACE("RpcNotificationTypeNone\n");
1759             break;
1760         default:
1761             FIXME("unknown NotificationType: %d/0x%x\n", state->NotificationType, state->NotificationType);
1762             break;
1763         }
1764     }
1765
1766     return 0;
1767 }
1768
1769 /***********************************************************************
1770  *           I_RpcSend [RPCRT4.@]
1771  *
1772  * Sends a message to the server.
1773  *
1774  * PARAMS
1775  *  pMsg [I/O] RPC message information.
1776  *
1777  * RETURNS
1778  *  Unknown.
1779  *
1780  * NOTES
1781  *  The buffer must have been allocated with I_RpcGetBuffer().
1782  *
1783  * SEE ALSO
1784  *  I_RpcGetBuffer(), I_RpcReceive(), I_RpcSendReceive().
1785  */
1786 RPC_STATUS WINAPI I_RpcSend(PRPC_MESSAGE pMsg)
1787 {
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                                   pMsg->BufferLength,
1800                                   pMsg->ProcNum & ~RPC_FLAGS_VALID_BIT,
1801                                   &bind->ObjectUuid);
1802   if (!hdr)
1803     return ERROR_OUTOFMEMORY;
1804   hdr->common.call_id = conn->NextCallId++;
1805
1806   status = RPCRT4_Send(conn, hdr, pMsg->Buffer, pMsg->BufferLength);
1807
1808   RPCRT4_FreeHeader(hdr);
1809
1810   if (status == RPC_S_OK && pMsg->RpcFlags & RPC_BUFFER_ASYNC)
1811   {
1812     if (!QueueUserWorkItem(async_notifier_proc, conn, WT_EXECUTEDEFAULT | WT_EXECUTELONGFUNCTION))
1813         status = RPC_S_OUT_OF_RESOURCES;
1814   }
1815
1816   return status;
1817 }
1818
1819 /* is this status something that the server can't recover from? */
1820 static inline BOOL is_hard_error(RPC_STATUS status)
1821 {
1822     switch (status)
1823     {
1824     case 0: /* user-defined fault */
1825     case ERROR_ACCESS_DENIED:
1826     case ERROR_INVALID_PARAMETER:
1827     case RPC_S_PROTOCOL_ERROR:
1828     case RPC_S_CALL_FAILED:
1829     case RPC_S_CALL_FAILED_DNE:
1830     case RPC_S_SEC_PKG_ERROR:
1831         return TRUE;
1832     default:
1833         return FALSE;
1834     }
1835 }
1836
1837 /***********************************************************************
1838  *           I_RpcReceive [RPCRT4.@]
1839  */
1840 RPC_STATUS WINAPI I_RpcReceive(PRPC_MESSAGE pMsg)
1841 {
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   status = RPCRT4_Receive(conn, &hdr, pMsg);
1852   if (status != RPC_S_OK) {
1853     WARN("receive failed with error %x\n", status);
1854     goto fail;
1855   }
1856
1857   switch (hdr->common.ptype) {
1858   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     if (is_hard_error(status))
1864         goto fail;
1865     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   RPCRT4_FreeHeader(hdr);
1874   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  * Sends a message to the server and receives the response.
1887  *
1888  * PARAMS
1889  *  pMsg [I/O] RPC message information.
1890  *
1891  * RETURNS
1892  *  Success: RPC_S_OK.
1893  *  Failure: Any error code.
1894  *
1895  * NOTES
1896  *  The buffer must have been allocated with I_RpcGetBuffer().
1897  *
1898  * SEE ALSO
1899  *  I_RpcGetBuffer(), I_RpcSend(), I_RpcReceive().
1900  */
1901 RPC_STATUS WINAPI I_RpcSendReceive(PRPC_MESSAGE pMsg)
1902 {
1903   RPC_STATUS status;
1904   void *original_buffer;
1905
1906   TRACE("(%p)\n", pMsg);
1907
1908   original_buffer = pMsg->Buffer;
1909   status = I_RpcSend(pMsg);
1910   if (status == RPC_S_OK)
1911     status = I_RpcReceive(pMsg);
1912   /* free the buffer replaced by a new buffer in I_RpcReceive */
1913   if (status == RPC_S_OK)
1914     I_RpcFree(original_buffer);
1915   return status;
1916 }
1917
1918 /***********************************************************************
1919  *           I_RpcAsyncSetHandle [RPCRT4.@]
1920  *
1921  * Sets the asynchronous state of the handle contained in the RPC message
1922  * structure.
1923  *
1924  * PARAMS
1925  *  pMsg   [I] RPC Message structure.
1926  *  pAsync [I] Asynchronous state to set.
1927  *
1928  * RETURNS
1929  *  Success: RPC_S_OK.
1930  *  Failure: Any error code.
1931  */
1932 RPC_STATUS WINAPI I_RpcAsyncSetHandle(PRPC_MESSAGE pMsg, PRPC_ASYNC_STATE pAsync)
1933 {
1934     RpcBinding* bind = pMsg->Handle;
1935     RpcConnection *conn;
1936
1937     TRACE("(%p, %p)\n", pMsg, pAsync);
1938
1939     if (!bind || bind->server || !pMsg->ReservedForRuntime) return RPC_S_INVALID_BINDING;
1940
1941     conn = pMsg->ReservedForRuntime;
1942     conn->async_state = pAsync;
1943
1944     return RPC_S_OK;
1945 }
1946
1947 /***********************************************************************
1948  *           I_RpcAsyncAbortCall [RPCRT4.@]
1949  *
1950  * Aborts an asynchronous call.
1951  *
1952  * PARAMS
1953  *  pAsync        [I] Asynchronous state.
1954  *  ExceptionCode [I] Exception code.
1955  *
1956  * RETURNS
1957  *  Success: RPC_S_OK.
1958  *  Failure: Any error code.
1959  */
1960 RPC_STATUS WINAPI I_RpcAsyncAbortCall(PRPC_ASYNC_STATE pAsync, ULONG ExceptionCode)
1961 {
1962     FIXME("(%p, %d): stub\n", pAsync, ExceptionCode);
1963     return RPC_S_INVALID_ASYNC_HANDLE;
1964 }