source3/rpc_client/cli_pipe.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  RPC Pipe client / server routines
   4  *  Largely rewritten by Jeremy Allison             2005.
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include "includes.h"
  21 #include "librpc/gen_ndr/cli_epmapper.h"
  22
  23 #undef DBGC_CLASS
  24 #define DBGC_CLASS DBGC_RPC_CLI
  25
  26 /*******************************************************************
  27 interface/version dce/rpc pipe identification
  28 ********************************************************************/
  29
  30 #define PIPE_SRVSVC   "\\PIPE\\srvsvc"
  31 #define PIPE_SAMR     "\\PIPE\\samr"
  32 #define PIPE_WINREG   "\\PIPE\\winreg"
  33 #define PIPE_WKSSVC   "\\PIPE\\wkssvc"
  34 #define PIPE_NETLOGON "\\PIPE\\NETLOGON"
  35 #define PIPE_NTLSA    "\\PIPE\\ntlsa"
  36 #define PIPE_NTSVCS   "\\PIPE\\ntsvcs"
  37 #define PIPE_LSASS    "\\PIPE\\lsass"
  38 #define PIPE_LSARPC   "\\PIPE\\lsarpc"
  39 #define PIPE_SPOOLSS  "\\PIPE\\spoolss"
  40 #define PIPE_NETDFS   "\\PIPE\\netdfs"
  41 #define PIPE_ECHO     "\\PIPE\\rpcecho"
  42 #define PIPE_SHUTDOWN "\\PIPE\\initshutdown"
  43 #define PIPE_EPM      "\\PIPE\\epmapper"
  44 #define PIPE_SVCCTL   "\\PIPE\\svcctl"
  45 #define PIPE_EVENTLOG "\\PIPE\\eventlog"
  46 #define PIPE_EPMAPPER "\\PIPE\\epmapper"
  47 #define PIPE_DRSUAPI  "\\PIPE\\drsuapi"
  48
  49 /*
  50  * IMPORTANT!!  If you update this structure, make sure to
  51  * update the index #defines in smb.h.
  52  */
  53
  54 static const struct pipe_id_info {
  55         /* the names appear not to matter: the syntaxes _do_ matter */
  56
  57         const char *client_pipe;
  58         const RPC_IFACE *abstr_syntax; /* this one is the abstract syntax id */
  59 } pipe_names [] =
  60 {
  61         { PIPE_LSARPC,          &ndr_table_lsarpc.syntax_id },
  62         { PIPE_LSARPC,          &ndr_table_dssetup.syntax_id },
  63         { PIPE_SAMR,            &ndr_table_samr.syntax_id },
  64         { PIPE_NETLOGON,        &ndr_table_netlogon.syntax_id },
  65         { PIPE_SRVSVC,          &ndr_table_srvsvc.syntax_id },
  66         { PIPE_WKSSVC,          &ndr_table_wkssvc.syntax_id },
  67         { PIPE_WINREG,          &ndr_table_winreg.syntax_id },
  68         { PIPE_SPOOLSS,         &ndr_table_spoolss.syntax_id },
  69         { PIPE_NETDFS,          &ndr_table_netdfs.syntax_id },
  70         { PIPE_ECHO,            &ndr_table_rpcecho.syntax_id },
  71         { PIPE_SHUTDOWN,        &ndr_table_initshutdown.syntax_id },
  72         { PIPE_SVCCTL,          &ndr_table_svcctl.syntax_id },
  73         { PIPE_EVENTLOG,        &ndr_table_eventlog.syntax_id },
  74         { PIPE_NTSVCS,          &ndr_table_ntsvcs.syntax_id },
  75         { PIPE_EPMAPPER,        &ndr_table_epmapper.syntax_id },
  76         { PIPE_DRSUAPI,         &ndr_table_drsuapi.syntax_id },
  77         { NULL, NULL }
  78 };
  79
  80 /****************************************************************************
  81  Return the pipe name from the interface.
  82  ****************************************************************************/
  83
  84 const char *get_pipe_name_from_iface(const struct ndr_syntax_id *interface)
  85 {
  86         char *guid_str;
  87         const char *result;
  88         int i;
  89         for (i = 0; pipe_names[i].client_pipe; i++) {
  90                 if (ndr_syntax_id_equal(pipe_names[i].abstr_syntax,
  91                                         interface)) {
  92                         return &pipe_names[i].client_pipe[5];
  93                 }
  94         }
  95
  96         /*
  97          * Here we should ask \\epmapper, but for now our code is only
  98          * interested in the known pipes mentioned in pipe_names[]
  99          */
 100
 101         guid_str = GUID_string(talloc_tos(), &interface->uuid);
 102         if (guid_str == NULL) {
 103                 return NULL;
 104         }
 105         result = talloc_asprintf(talloc_tos(), "Interface %s.%d", guid_str,
 106                                  (int)interface->if_version);
 107         TALLOC_FREE(guid_str);
 108
 109         if (result == NULL) {
 110                 return "PIPE";
 111         }
 112         return result;
 113 }
 114
 115 /********************************************************************
 116  Map internal value to wire value.
 117  ********************************************************************/
 118
 119 static int map_pipe_auth_type_to_rpc_auth_type(enum pipe_auth_type auth_type)
 120 {
 121         switch (auth_type) {
 122
 123         case PIPE_AUTH_TYPE_NONE:
 124                 return RPC_ANONYMOUS_AUTH_TYPE;
 125
 126         case PIPE_AUTH_TYPE_NTLMSSP:
 127                 return RPC_NTLMSSP_AUTH_TYPE;
 128
 129         case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
 130         case PIPE_AUTH_TYPE_SPNEGO_KRB5:
 131                 return RPC_SPNEGO_AUTH_TYPE;
 132
 133         case PIPE_AUTH_TYPE_SCHANNEL:
 134                 return RPC_SCHANNEL_AUTH_TYPE;
 135
 136         case PIPE_AUTH_TYPE_KRB5:
 137                 return RPC_KRB5_AUTH_TYPE;
 138
 139         default:
 140                 DEBUG(0,("map_pipe_auth_type_to_rpc_type: unknown pipe "
 141                         "auth type %u\n",
 142                         (unsigned int)auth_type ));
 143                 break;
 144         }
 145         return -1;
 146 }
 147
 148 /********************************************************************
 149  Pipe description for a DEBUG
 150  ********************************************************************/
 151 static const char *rpccli_pipe_txt(TALLOC_CTX *mem_ctx,
 152                                    struct rpc_pipe_client *cli)
 153 {
 154         char *result = talloc_asprintf(mem_ctx, "host %s", cli->desthost);
 155         if (result == NULL) {
 156                 return "pipe";
 157         }
 158         return result;
 159 }
 160
 161 /********************************************************************
 162  Rpc pipe call id.
 163  ********************************************************************/
 164
 165 static uint32 get_rpc_call_id(void)
 166 {
 167         static uint32 call_id = 0;
 168         return ++call_id;
 169 }
 170
 171 /*
 172  * Realloc pdu to have a least "size" bytes
 173  */
 174
 175 static bool rpc_grow_buffer(prs_struct *pdu, size_t size)
 176 {
 177         size_t extra_size;
 178
 179         if (prs_data_size(pdu) >= size) {
 180                 return true;
 181         }
 182
 183         extra_size = size - prs_data_size(pdu);
 184
 185         if (!prs_force_grow(pdu, extra_size)) {
 186                 DEBUG(0, ("rpc_grow_buffer: Failed to grow parse struct by "
 187                           "%d bytes.\n", (int)extra_size));
 188                 return false;
 189         }
 190
 191         DEBUG(5, ("rpc_grow_buffer: grew buffer by %d bytes to %u\n",
 192                   (int)extra_size, prs_data_size(pdu)));
 193         return true;
 194 }
 195
 196
 197 /*******************************************************************
 198  Use SMBreadX to get rest of one fragment's worth of rpc data.
 199  Reads the whole size or give an error message
 200  ********************************************************************/
 201
 202 struct rpc_read_state {
 203         struct event_context *ev;
 204         struct rpc_cli_transport *transport;
 205         uint8_t *data;
 206         size_t size;
 207         size_t num_read;
 208 };
 209
 210 static void rpc_read_done(struct tevent_req *subreq);
 211
 212 static struct tevent_req *rpc_read_send(TALLOC_CTX *mem_ctx,
 213                                         struct event_context *ev,
 214                                         struct rpc_cli_transport *transport,
 215                                         uint8_t *data, size_t size)
 216 {
 217         struct tevent_req *req, *subreq;
 218         struct rpc_read_state *state;
 219
 220         req = tevent_req_create(mem_ctx, &state, struct rpc_read_state);
 221         if (req == NULL) {
 222                 return NULL;
 223         }
 224         state->ev = ev;
 225         state->transport = transport;
 226         state->data = data;
 227         state->size = size;
 228         state->num_read = 0;
 229
 230         DEBUG(5, ("rpc_read_send: data_to_read: %u\n", (unsigned int)size));
 231
 232         subreq = transport->read_send(state, ev, (uint8_t *)data, size,
 233                                       transport->priv);
 234         if (subreq == NULL) {
 235                 goto fail;
 236         }
 237         tevent_req_set_callback(subreq, rpc_read_done, req);
 238         return req;
 239
 240  fail:
 241         TALLOC_FREE(req);
 242         return NULL;
 243 }
 244
 245 static void rpc_read_done(struct tevent_req *subreq)
 246 {
 247         struct tevent_req *req = tevent_req_callback_data(
 248                 subreq, struct tevent_req);
 249         struct rpc_read_state *state = tevent_req_data(
 250                 req, struct rpc_read_state);
 251         NTSTATUS status;
 252         ssize_t received;
 253
 254         status = state->transport->read_recv(subreq, &received);
 255         TALLOC_FREE(subreq);
 256         if (!NT_STATUS_IS_OK(status)) {
 257                 tevent_req_nterror(req, status);
 258                 return;
 259         }
 260
 261         state->num_read += received;
 262         if (state->num_read == state->size) {
 263                 tevent_req_done(req);
 264                 return;
 265         }
 266
 267         subreq = state->transport->read_send(state, state->ev,
 268                                              state->data + state->num_read,
 269                                              state->size - state->num_read,
 270                                              state->transport->priv);
 271         if (tevent_req_nomem(subreq, req)) {
 272                 return;
 273         }
 274         tevent_req_set_callback(subreq, rpc_read_done, req);
 275 }
 276
 277 static NTSTATUS rpc_read_recv(struct tevent_req *req)
 278 {
 279         return tevent_req_simple_recv_ntstatus(req);
 280 }
 281
 282 struct rpc_write_state {
 283         struct event_context *ev;
 284         struct rpc_cli_transport *transport;
 285         const uint8_t *data;
 286         size_t size;
 287         size_t num_written;
 288 };
 289
 290 static void rpc_write_done(struct tevent_req *subreq);
 291
 292 static struct tevent_req *rpc_write_send(TALLOC_CTX *mem_ctx,
 293                                          struct event_context *ev,
 294                                          struct rpc_cli_transport *transport,
 295                                          const uint8_t *data, size_t size)
 296 {
 297         struct tevent_req *req, *subreq;
 298         struct rpc_write_state *state;
 299
 300         req = tevent_req_create(mem_ctx, &state, struct rpc_write_state);
 301         if (req == NULL) {
 302                 return NULL;
 303         }
 304         state->ev = ev;
 305         state->transport = transport;
 306         state->data = data;
 307         state->size = size;
 308         state->num_written = 0;
 309
 310         DEBUG(5, ("rpc_write_send: data_to_write: %u\n", (unsigned int)size));
 311
 312         subreq = transport->write_send(state, ev, data, size, transport->priv);
 313         if (subreq == NULL) {
 314                 goto fail;
 315         }
 316         tevent_req_set_callback(subreq, rpc_write_done, req);
 317         return req;
 318  fail:
 319         TALLOC_FREE(req);
 320         return NULL;
 321 }
 322
 323 static void rpc_write_done(struct tevent_req *subreq)
 324 {
 325         struct tevent_req *req = tevent_req_callback_data(
 326                 subreq, struct tevent_req);
 327         struct rpc_write_state *state = tevent_req_data(
 328                 req, struct rpc_write_state);
 329         NTSTATUS status;
 330         ssize_t written;
 331
 332         status = state->transport->write_recv(subreq, &written);
 333         TALLOC_FREE(subreq);
 334         if (!NT_STATUS_IS_OK(status)) {
 335                 tevent_req_nterror(req, status);
 336                 return;
 337         }
 338
 339         state->num_written += written;
 340
 341         if (state->num_written == state->size) {
 342                 tevent_req_done(req);
 343                 return;
 344         }
 345
 346         subreq = state->transport->write_send(state, state->ev,
 347                                               state->data + state->num_written,
 348                                               state->size - state->num_written,
 349                                               state->transport->priv);
 350         if (tevent_req_nomem(subreq, req)) {
 351                 return;
 352         }
 353         tevent_req_set_callback(subreq, rpc_write_done, req);
 354 }
 355
 356 static NTSTATUS rpc_write_recv(struct tevent_req *req)
 357 {
 358         return tevent_req_simple_recv_ntstatus(req);
 359 }
 360
 361
 362 static NTSTATUS parse_rpc_header(struct rpc_pipe_client *cli,
 363                                  struct rpc_hdr_info *prhdr,
 364                                  prs_struct *pdu)
 365 {
 366         /*
 367          * This next call sets the endian bit correctly in current_pdu. We
 368          * will propagate this to rbuf later.
 369          */
 370
 371         if(!smb_io_rpc_hdr("rpc_hdr   ", prhdr, pdu, 0)) {
 372                 DEBUG(0, ("get_current_pdu: Failed to unmarshall RPC_HDR.\n"));
 373                 return NT_STATUS_BUFFER_TOO_SMALL;
 374         }
 375
 376         if (prhdr->frag_len > cli->max_recv_frag) {
 377                 DEBUG(0, ("cli_pipe_get_current_pdu: Server sent fraglen %d,"
 378                           " we only allow %d\n", (int)prhdr->frag_len,
 379                           (int)cli->max_recv_frag));
 380                 return NT_STATUS_BUFFER_TOO_SMALL;
 381         }
 382
 383         return NT_STATUS_OK;
 384 }
 385
 386 /****************************************************************************
 387  Try and get a PDU's worth of data from current_pdu. If not, then read more
 388  from the wire.
 389  ****************************************************************************/
 390
 391 struct get_complete_frag_state {
 392         struct event_context *ev;
 393         struct rpc_pipe_client *cli;
 394         struct rpc_hdr_info *prhdr;
 395         prs_struct *pdu;
 396 };
 397
 398 static void get_complete_frag_got_header(struct tevent_req *subreq);
 399 static void get_complete_frag_got_rest(struct tevent_req *subreq);
 400
 401 static struct tevent_req *get_complete_frag_send(TALLOC_CTX *mem_ctx,
 402                                                  struct event_context *ev,
 403                                                  struct rpc_pipe_client *cli,
 404                                                  struct rpc_hdr_info *prhdr,
 405                                                  prs_struct *pdu)
 406 {
 407         struct tevent_req *req, *subreq;
 408         struct get_complete_frag_state *state;
 409         uint32_t pdu_len;
 410         NTSTATUS status;
 411
 412         req = tevent_req_create(mem_ctx, &state,
 413                                 struct get_complete_frag_state);
 414         if (req == NULL) {
 415                 return NULL;
 416         }
 417         state->ev = ev;
 418         state->cli = cli;
 419         state->prhdr = prhdr;
 420         state->pdu = pdu;
 421
 422         pdu_len = prs_data_size(pdu);
 423         if (pdu_len < RPC_HEADER_LEN) {
 424                 if (!rpc_grow_buffer(pdu, RPC_HEADER_LEN)) {
 425                         status = NT_STATUS_NO_MEMORY;
 426                         goto post_status;
 427                 }
 428                 subreq = rpc_read_send(
 429                         state, state->ev,
 430                         state->cli->transport,
 431                         (uint8_t *)(prs_data_p(state->pdu) + pdu_len),
 432                         RPC_HEADER_LEN - pdu_len);
 433                 if (subreq == NULL) {
 434                         status = NT_STATUS_NO_MEMORY;
 435                         goto post_status;
 436                 }
 437                 tevent_req_set_callback(subreq, get_complete_frag_got_header,
 438                                         req);
 439                 return req;
 440         }
 441
 442         status = parse_rpc_header(cli, prhdr, pdu);
 443         if (!NT_STATUS_IS_OK(status)) {
 444                 goto post_status;
 445         }
 446
 447         /*
 448          * Ensure we have frag_len bytes of data.
 449          */
 450         if (pdu_len < prhdr->frag_len) {
 451                 if (!rpc_grow_buffer(pdu, prhdr->frag_len)) {
 452                         status = NT_STATUS_NO_MEMORY;
 453                         goto post_status;
 454                 }
 455                 subreq = rpc_read_send(state, state->ev,
 456                                        state->cli->transport,
 457                                        (uint8_t *)(prs_data_p(pdu) + pdu_len),
 458                                        prhdr->frag_len - pdu_len);
 459                 if (subreq == NULL) {
 460                         status = NT_STATUS_NO_MEMORY;
 461                         goto post_status;
 462                 }
 463                 tevent_req_set_callback(subreq, get_complete_frag_got_rest,
 464                                         req);
 465                 return req;
 466         }
 467
 468         status = NT_STATUS_OK;
 469  post_status:
 470         if (NT_STATUS_IS_OK(status)) {
 471                 tevent_req_done(req);
 472         } else {
 473                 tevent_req_nterror(req, status);
 474         }
 475         return tevent_req_post(req, ev);
 476 }
 477
 478 static void get_complete_frag_got_header(struct tevent_req *subreq)
 479 {
 480         struct tevent_req *req = tevent_req_callback_data(
 481                 subreq, struct tevent_req);
 482         struct get_complete_frag_state *state = tevent_req_data(
 483                 req, struct get_complete_frag_state);
 484         NTSTATUS status;
 485
 486         status = rpc_read_recv(subreq);
 487         TALLOC_FREE(subreq);
 488         if (!NT_STATUS_IS_OK(status)) {
 489                 tevent_req_nterror(req, status);
 490                 return;
 491         }
 492
 493         status = parse_rpc_header(state->cli, state->prhdr, state->pdu);
 494         if (!NT_STATUS_IS_OK(status)) {
 495                 tevent_req_nterror(req, status);
 496                 return;
 497         }
 498
 499         if (!rpc_grow_buffer(state->pdu, state->prhdr->frag_len)) {
 500                 tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
 501                 return;
 502         }
 503
 504         /*
 505          * We're here in this piece of code because we've read exactly
 506          * RPC_HEADER_LEN bytes into state->pdu.
 507          */
 508
 509         subreq = rpc_read_send(
 510                 state, state->ev, state->cli->transport,
 511                 (uint8_t *)(prs_data_p(state->pdu) + RPC_HEADER_LEN),
 512                 state->prhdr->frag_len - RPC_HEADER_LEN);
 513         if (tevent_req_nomem(subreq, req)) {
 514                 return;
 515         }
 516         tevent_req_set_callback(subreq, get_complete_frag_got_rest, req);
 517 }
 518
 519 static void get_complete_frag_got_rest(struct tevent_req *subreq)
 520 {
 521         struct tevent_req *req = tevent_req_callback_data(
 522                 subreq, struct tevent_req);
 523         NTSTATUS status;
 524
 525         status = rpc_read_recv(subreq);
 526         TALLOC_FREE(subreq);
 527         if (!NT_STATUS_IS_OK(status)) {
 528                 tevent_req_nterror(req, status);
 529                 return;
 530         }
 531         tevent_req_done(req);
 532 }
 533
 534 static NTSTATUS get_complete_frag_recv(struct tevent_req *req)
 535 {
 536         return tevent_req_simple_recv_ntstatus(req);
 537 }
 538
 539 /****************************************************************************
 540  NTLMSSP specific sign/seal.
 541  Virtually identical to rpc_server/srv_pipe.c:api_pipe_ntlmssp_auth_process.
 542  In fact I should probably abstract these into identical pieces of code... JRA.
 543  ****************************************************************************/
 544
 545 static NTSTATUS cli_pipe_verify_ntlmssp(struct rpc_pipe_client *cli, RPC_HDR *prhdr,
 546                                 prs_struct *current_pdu,
 547                                 uint8 *p_ss_padding_len)
 548 {
 549         RPC_HDR_AUTH auth_info;
 550         uint32 save_offset = prs_offset(current_pdu);
 551         uint32 auth_len = prhdr->auth_len;
 552         NTLMSSP_STATE *ntlmssp_state = cli->auth->a_u.ntlmssp_state;
 553         unsigned char *data = NULL;
 554         size_t data_len;
 555         unsigned char *full_packet_data = NULL;
 556         size_t full_packet_data_len;
 557         DATA_BLOB auth_blob;
 558         NTSTATUS status;
 559
 560         if (cli->auth->auth_level == PIPE_AUTH_LEVEL_NONE
 561             || cli->auth->auth_level == PIPE_AUTH_LEVEL_CONNECT) {
 562                 return NT_STATUS_OK;
 563         }
 564
 565         if (!ntlmssp_state) {
 566                 return NT_STATUS_INVALID_PARAMETER;
 567         }
 568
 569         /* Ensure there's enough data for an authenticated response. */
 570         if ((auth_len > RPC_MAX_SIGN_SIZE) ||
 571                         (RPC_HEADER_LEN + RPC_HDR_RESP_LEN + RPC_HDR_AUTH_LEN + auth_len > prhdr->frag_len)) {
 572                 DEBUG(0,("cli_pipe_verify_ntlmssp: auth_len %u is too large.\n",
 573                         (unsigned int)auth_len ));
 574                 return NT_STATUS_BUFFER_TOO_SMALL;
 575         }
 576
 577         /*
 578          * We need the full packet data + length (minus auth stuff) as well as the packet data + length
 579          * after the RPC header.
 580          * We need to pass in the full packet (minus auth len) to the NTLMSSP sign and check seal
 581          * functions as NTLMv2 checks the rpc headers also.
 582          */
 583
 584         data = (unsigned char *)(prs_data_p(current_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN);
 585         data_len = (size_t)(prhdr->frag_len - RPC_HEADER_LEN - RPC_HDR_RESP_LEN - RPC_HDR_AUTH_LEN - auth_len);
 586
 587         full_packet_data = (unsigned char *)prs_data_p(current_pdu);
 588         full_packet_data_len = prhdr->frag_len - auth_len;
 589
 590         /* Pull the auth header and the following data into a blob. */
 591         if(!prs_set_offset(current_pdu, RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len)) {
 592                 DEBUG(0,("cli_pipe_verify_ntlmssp: cannot move offset to %u.\n",
 593                         (unsigned int)RPC_HEADER_LEN + (unsigned int)RPC_HDR_RESP_LEN + (unsigned int)data_len ));
 594                 return NT_STATUS_BUFFER_TOO_SMALL;
 595         }
 596
 597         if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, current_pdu, 0)) {
 598                 DEBUG(0,("cli_pipe_verify_ntlmssp: failed to unmarshall RPC_HDR_AUTH.\n"));
 599                 return NT_STATUS_BUFFER_TOO_SMALL;
 600         }
 601
 602         auth_blob.data = (unsigned char *)prs_data_p(current_pdu) + prs_offset(current_pdu);
 603         auth_blob.length = auth_len;
 604
 605         switch (cli->auth->auth_level) {
 606                 case PIPE_AUTH_LEVEL_PRIVACY:
 607                         /* Data is encrypted. */
 608                         status = ntlmssp_unseal_packet(ntlmssp_state,
 609                                                         data, data_len,
 610                                                         full_packet_data,
 611                                                         full_packet_data_len,
 612                                                         &auth_blob);
 613                         if (!NT_STATUS_IS_OK(status)) {
 614                                 DEBUG(0,("cli_pipe_verify_ntlmssp: failed to unseal "
 615                                         "packet from %s. Error was %s.\n",
 616                                         rpccli_pipe_txt(debug_ctx(), cli),
 617                                         nt_errstr(status) ));
 618                                 return status;
 619                         }
 620                         break;
 621                 case PIPE_AUTH_LEVEL_INTEGRITY:
 622                         /* Data is signed. */
 623                         status = ntlmssp_check_packet(ntlmssp_state,
 624                                                         data, data_len,
 625                                                         full_packet_data,
 626                                                         full_packet_data_len,
 627                                                         &auth_blob);
 628                         if (!NT_STATUS_IS_OK(status)) {
 629                                 DEBUG(0,("cli_pipe_verify_ntlmssp: check signing failed on "
 630                                         "packet from %s. Error was %s.\n",
 631                                         rpccli_pipe_txt(debug_ctx(), cli),
 632                                         nt_errstr(status) ));
 633                                 return status;
 634                         }
 635                         break;
 636                 default:
 637                         DEBUG(0, ("cli_pipe_verify_ntlmssp: unknown internal "
 638                                   "auth level %d\n", cli->auth->auth_level));
 639                         return NT_STATUS_INVALID_INFO_CLASS;
 640         }
 641
 642         /*
 643          * Return the current pointer to the data offset.
 644          */
 645
 646         if(!prs_set_offset(current_pdu, save_offset)) {
 647                 DEBUG(0,("api_pipe_auth_process: failed to set offset back to %u\n",
 648                         (unsigned int)save_offset ));
 649                 return NT_STATUS_BUFFER_TOO_SMALL;
 650         }
 651
 652         /*
 653          * Remember the padding length. We must remove it from the real data
 654          * stream once the sign/seal is done.
 655          */
 656
 657         *p_ss_padding_len = auth_info.auth_pad_len;
 658
 659         return NT_STATUS_OK;
 660 }
 661
 662 /****************************************************************************
 663  schannel specific sign/seal.
 664  ****************************************************************************/
 665
 666 static NTSTATUS cli_pipe_verify_schannel(struct rpc_pipe_client *cli, RPC_HDR *prhdr,
 667                                 prs_struct *current_pdu,
 668                                 uint8 *p_ss_padding_len)
 669 {
 670         RPC_HDR_AUTH auth_info;
 671         RPC_AUTH_SCHANNEL_CHK schannel_chk;
 672         uint32 auth_len = prhdr->auth_len;
 673         uint32 save_offset = prs_offset(current_pdu);
 674         struct schannel_auth_struct *schannel_auth =
 675                 cli->auth->a_u.schannel_auth;
 676         uint32 data_len;
 677
 678         if (cli->auth->auth_level == PIPE_AUTH_LEVEL_NONE
 679             || cli->auth->auth_level == PIPE_AUTH_LEVEL_CONNECT) {
 680                 return NT_STATUS_OK;
 681         }
 682
 683         if (auth_len != RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN) {
 684                 DEBUG(0,("cli_pipe_verify_schannel: auth_len %u.\n", (unsigned int)auth_len ));
 685                 return NT_STATUS_INVALID_PARAMETER;
 686         }
 687
 688         if (!schannel_auth) {
 689                 return NT_STATUS_INVALID_PARAMETER;
 690         }
 691
 692         /* Ensure there's enough data for an authenticated response. */
 693         if ((auth_len > RPC_MAX_SIGN_SIZE) ||
 694                         (RPC_HEADER_LEN + RPC_HDR_RESP_LEN + RPC_HDR_AUTH_LEN + auth_len > prhdr->frag_len)) {
 695                 DEBUG(0,("cli_pipe_verify_schannel: auth_len %u is too large.\n",
 696                         (unsigned int)auth_len ));
 697                 return NT_STATUS_INVALID_PARAMETER;
 698         }
 699
 700         data_len = prhdr->frag_len - RPC_HEADER_LEN - RPC_HDR_RESP_LEN - RPC_HDR_AUTH_LEN - auth_len;
 701
 702         if(!prs_set_offset(current_pdu, RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len)) {
 703                 DEBUG(0,("cli_pipe_verify_schannel: cannot move offset to %u.\n",
 704                         (unsigned int)RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len ));
 705                 return NT_STATUS_BUFFER_TOO_SMALL;
 706         }
 707
 708         if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, current_pdu, 0)) {
 709                 DEBUG(0,("cli_pipe_verify_schannel: failed to unmarshall RPC_HDR_AUTH.\n"));
 710                 return NT_STATUS_BUFFER_TOO_SMALL;
 711         }
 712
 713         if (auth_info.auth_type != RPC_SCHANNEL_AUTH_TYPE) {
 714                 DEBUG(0,("cli_pipe_verify_schannel: Invalid auth info %d on schannel\n",
 715                         auth_info.auth_type));
 716                 return NT_STATUS_BUFFER_TOO_SMALL;
 717         }
 718
 719         if(!smb_io_rpc_auth_schannel_chk("", RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN,
 720                                 &schannel_chk, current_pdu, 0)) {
 721                 DEBUG(0,("cli_pipe_verify_schannel: failed to unmarshal RPC_AUTH_SCHANNEL_CHK.\n"));
 722                 return NT_STATUS_BUFFER_TOO_SMALL;
 723         }
 724
 725         if (!schannel_decode(schannel_auth,
 726                         cli->auth->auth_level,
 727                         SENDER_IS_ACCEPTOR,
 728                         &schannel_chk,
 729                         prs_data_p(current_pdu)+RPC_HEADER_LEN+RPC_HDR_RESP_LEN,
 730                         data_len)) {
 731                 DEBUG(3,("cli_pipe_verify_schannel: failed to decode PDU "
 732                                 "Connection to %s.\n",
 733                                 rpccli_pipe_txt(debug_ctx(), cli)));
 734                 return NT_STATUS_INVALID_PARAMETER;
 735         }
 736
 737         /* The sequence number gets incremented on both send and receive. */
 738         schannel_auth->seq_num++;
 739
 740         /*
 741          * Return the current pointer to the data offset.
 742          */
 743
 744         if(!prs_set_offset(current_pdu, save_offset)) {
 745                 DEBUG(0,("api_pipe_auth_process: failed to set offset back to %u\n",
 746                         (unsigned int)save_offset ));
 747                 return NT_STATUS_BUFFER_TOO_SMALL;
 748         }
 749
 750         /*
 751          * Remember the padding length. We must remove it from the real data
 752          * stream once the sign/seal is done.
 753          */
 754
 755         *p_ss_padding_len = auth_info.auth_pad_len;
 756
 757         return NT_STATUS_OK;
 758 }
 759
 760 /****************************************************************************
 761  Do the authentication checks on an incoming pdu. Check sign and unseal etc.
 762  ****************************************************************************/
 763
 764 static NTSTATUS cli_pipe_validate_rpc_response(struct rpc_pipe_client *cli, RPC_HDR *prhdr,
 765                                 prs_struct *current_pdu,
 766                                 uint8 *p_ss_padding_len)
 767 {
 768         NTSTATUS ret = NT_STATUS_OK;
 769
 770         /* Paranioa checks for auth_len. */
 771         if (prhdr->auth_len) {
 772                 if (prhdr->auth_len > prhdr->frag_len) {
 773                         return NT_STATUS_INVALID_PARAMETER;
 774                 }
 775
 776                 if (prhdr->auth_len + (unsigned int)RPC_HDR_AUTH_LEN < prhdr->auth_len ||
 777                                 prhdr->auth_len + (unsigned int)RPC_HDR_AUTH_LEN < (unsigned int)RPC_HDR_AUTH_LEN) {
 778                         /* Integer wrap attempt. */
 779                         return NT_STATUS_INVALID_PARAMETER;
 780                 }
 781         }
 782
 783         /*
 784          * Now we have a complete RPC request PDU fragment, try and verify any auth data.
 785          */
 786
 787         switch(cli->auth->auth_type) {
 788                 case PIPE_AUTH_TYPE_NONE:
 789                         if (prhdr->auth_len) {
 790                                 DEBUG(3, ("cli_pipe_validate_rpc_response: "
 791                                           "Connection to %s - got non-zero "
 792                                           "auth len %u.\n",
 793                                         rpccli_pipe_txt(debug_ctx(), cli),
 794                                         (unsigned int)prhdr->auth_len ));
 795                                 return NT_STATUS_INVALID_PARAMETER;
 796                         }
 797                         break;
 798
 799                 case PIPE_AUTH_TYPE_NTLMSSP:
 800                 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
 801                         ret = cli_pipe_verify_ntlmssp(cli, prhdr, current_pdu, p_ss_padding_len);
 802                         if (!NT_STATUS_IS_OK(ret)) {
 803                                 return ret;
 804                         }
 805                         break;
 806
 807                 case PIPE_AUTH_TYPE_SCHANNEL:
 808                         ret = cli_pipe_verify_schannel(cli, prhdr, current_pdu, p_ss_padding_len);
 809                         if (!NT_STATUS_IS_OK(ret)) {
 810                                 return ret;
 811                         }
 812                         break;
 813
 814                 case PIPE_AUTH_TYPE_KRB5:
 815                 case PIPE_AUTH_TYPE_SPNEGO_KRB5:
 816                 default:
 817                         DEBUG(3, ("cli_pipe_validate_rpc_response: Connection "
 818                                   "to %s - unknown internal auth type %u.\n",
 819                                   rpccli_pipe_txt(debug_ctx(), cli),
 820                                   cli->auth->auth_type ));
 821                         return NT_STATUS_INVALID_INFO_CLASS;
 822         }
 823
 824         return NT_STATUS_OK;
 825 }
 826
 827 /****************************************************************************
 828  Do basic authentication checks on an incoming pdu.
 829  ****************************************************************************/
 830
 831 static NTSTATUS cli_pipe_validate_current_pdu(struct rpc_pipe_client *cli, RPC_HDR *prhdr,
 832                         prs_struct *current_pdu,
 833                         uint8 expected_pkt_type,
 834                         char **ppdata,
 835                         uint32 *pdata_len,
 836                         prs_struct *return_data)
 837 {
 838
 839         NTSTATUS ret = NT_STATUS_OK;
 840         uint32 current_pdu_len = prs_data_size(current_pdu);
 841
 842         if (current_pdu_len != prhdr->frag_len) {
 843                 DEBUG(5,("cli_pipe_validate_current_pdu: incorrect pdu length %u, expected %u\n",
 844                         (unsigned int)current_pdu_len, (unsigned int)prhdr->frag_len ));
 845                 return NT_STATUS_INVALID_PARAMETER;
 846         }
 847
 848         /*
 849          * Point the return values at the real data including the RPC
 850          * header. Just in case the caller wants it.
 851          */
 852         *ppdata = prs_data_p(current_pdu);
 853         *pdata_len = current_pdu_len;
 854
 855         /* Ensure we have the correct type. */
 856         switch (prhdr->pkt_type) {
 857                 case RPC_ALTCONTRESP:
 858                 case RPC_BINDACK:
 859
 860                         /* Alter context and bind ack share the same packet definitions. */
 861                         break;
 862
 863
 864                 case RPC_RESPONSE:
 865                 {
 866                         RPC_HDR_RESP rhdr_resp;
 867                         uint8 ss_padding_len = 0;
 868
 869                         if(!smb_io_rpc_hdr_resp("rpc_hdr_resp", &rhdr_resp, current_pdu, 0)) {
 870                                 DEBUG(5,("cli_pipe_validate_current_pdu: failed to unmarshal RPC_HDR_RESP.\n"));
 871                                 return NT_STATUS_BUFFER_TOO_SMALL;
 872                         }
 873
 874                         /* Here's where we deal with incoming sign/seal. */
 875                         ret = cli_pipe_validate_rpc_response(cli, prhdr,
 876                                         current_pdu, &ss_padding_len);
 877                         if (!NT_STATUS_IS_OK(ret)) {
 878                                 return ret;
 879                         }
 880
 881                         /* Point the return values at the NDR data. Remember to remove any ss padding. */
 882                         *ppdata = prs_data_p(current_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN;
 883
 884                         if (current_pdu_len < RPC_HEADER_LEN + RPC_HDR_RESP_LEN + ss_padding_len) {
 885                                 return NT_STATUS_BUFFER_TOO_SMALL;
 886                         }
 887
 888                         *pdata_len = current_pdu_len - RPC_HEADER_LEN - RPC_HDR_RESP_LEN - ss_padding_len;
 889
 890                         /* Remember to remove the auth footer. */
 891                         if (prhdr->auth_len) {
 892                                 /* We've already done integer wrap tests on auth_len in
 893                                         cli_pipe_validate_rpc_response(). */
 894                                 if (*pdata_len < RPC_HDR_AUTH_LEN + prhdr->auth_len) {
 895                                         return NT_STATUS_BUFFER_TOO_SMALL;
 896                                 }
 897                                 *pdata_len -= (RPC_HDR_AUTH_LEN + prhdr->auth_len);
 898                         }
 899
 900                         DEBUG(10,("cli_pipe_validate_current_pdu: got pdu len %u, data_len %u, ss_len %u\n",
 901                                 current_pdu_len, *pdata_len, ss_padding_len ));
 902
 903                         /*
 904                          * If this is the first reply, and the allocation hint is reasonably, try and
 905                          * set up the return_data parse_struct to the correct size.
 906                          */
 907
 908                         if ((prs_data_size(return_data) == 0) && rhdr_resp.alloc_hint && (rhdr_resp.alloc_hint < 15*1024*1024)) {
 909                                 if (!prs_set_buffer_size(return_data, rhdr_resp.alloc_hint)) {
 910                                         DEBUG(0,("cli_pipe_validate_current_pdu: reply alloc hint %u "
 911                                                 "too large to allocate\n",
 912                                                 (unsigned int)rhdr_resp.alloc_hint ));
 913                                         return NT_STATUS_NO_MEMORY;
 914                                 }
 915                         }
 916
 917                         break;
 918                 }
 919
 920                 case RPC_BINDNACK:
 921                         DEBUG(1, ("cli_pipe_validate_current_pdu: Bind NACK "
 922                                   "received from %s!\n",
 923                                   rpccli_pipe_txt(debug_ctx(), cli)));
 924                         /* Use this for now... */
 925                         return NT_STATUS_NETWORK_ACCESS_DENIED;
 926
 927                 case RPC_FAULT:
 928                 {
 929                         RPC_HDR_RESP rhdr_resp;
 930                         RPC_HDR_FAULT fault_resp;
 931
 932                         if(!smb_io_rpc_hdr_resp("rpc_hdr_resp", &rhdr_resp, current_pdu, 0)) {
 933                                 DEBUG(5,("cli_pipe_validate_current_pdu: failed to unmarshal RPC_HDR_RESP.\n"));
 934                                 return NT_STATUS_BUFFER_TOO_SMALL;
 935                         }
 936
 937                         if(!smb_io_rpc_hdr_fault("fault", &fault_resp, current_pdu, 0)) {
 938                                 DEBUG(5,("cli_pipe_validate_current_pdu: failed to unmarshal RPC_HDR_FAULT.\n"));
 939                                 return NT_STATUS_BUFFER_TOO_SMALL;
 940                         }
 941
 942                         DEBUG(1, ("cli_pipe_validate_current_pdu: RPC fault "
 943                                   "code %s received from %s!\n",
 944                                 dcerpc_errstr(debug_ctx(), NT_STATUS_V(fault_resp.status)),
 945                                 rpccli_pipe_txt(debug_ctx(), cli)));
 946                         if (NT_STATUS_IS_OK(fault_resp.status)) {
 947                                 return NT_STATUS_UNSUCCESSFUL;
 948                         } else {
 949                                 return fault_resp.status;
 950                         }
 951                 }
 952
 953                 default:
 954                         DEBUG(0, ("cli_pipe_validate_current_pdu: unknown packet type %u received "
 955                                 "from %s!\n",
 956                                 (unsigned int)prhdr->pkt_type,
 957                                 rpccli_pipe_txt(debug_ctx(), cli)));
 958                         return NT_STATUS_INVALID_INFO_CLASS;
 959         }
 960
 961         if (prhdr->pkt_type != expected_pkt_type) {
 962                 DEBUG(3, ("cli_pipe_validate_current_pdu: Connection to %s "
 963                           "got an unexpected RPC packet type - %u, not %u\n",
 964                         rpccli_pipe_txt(debug_ctx(), cli),
 965                         prhdr->pkt_type,
 966                         expected_pkt_type));
 967                 return NT_STATUS_INVALID_INFO_CLASS;
 968         }
 969
 970         /* Do this just before return - we don't want to modify any rpc header
 971            data before now as we may have needed to do cryptographic actions on
 972            it before. */
 973
 974         if ((prhdr->pkt_type == RPC_BINDACK) && !(prhdr->flags & RPC_FLG_LAST)) {
 975                 DEBUG(5,("cli_pipe_validate_current_pdu: bug in server (AS/U?), "
 976                         "setting fragment first/last ON.\n"));
 977                 prhdr->flags |= RPC_FLG_FIRST|RPC_FLG_LAST;
 978         }
 979
 980         return NT_STATUS_OK;
 981 }
 982
 983 /****************************************************************************
 984  Ensure we eat the just processed pdu from the current_pdu prs_struct.
 985  Normally the frag_len and buffer size will match, but on the first trans
 986  reply there is a theoretical chance that buffer size > frag_len, so we must
 987  deal with that.
 988  ****************************************************************************/
 989
 990 static NTSTATUS cli_pipe_reset_current_pdu(struct rpc_pipe_client *cli, RPC_HDR *prhdr, prs_struct *current_pdu)
 991 {
 992         uint32 current_pdu_len = prs_data_size(current_pdu);
 993
 994         if (current_pdu_len < prhdr->frag_len) {
 995                 return NT_STATUS_BUFFER_TOO_SMALL;
 996         }
 997
 998         /* Common case. */
 999         if (current_pdu_len == (uint32)prhdr->frag_len) {
1000                 prs_mem_free(current_pdu);
1001                 prs_init_empty(current_pdu, prs_get_mem_context(current_pdu), UNMARSHALL);
1002                 /* Make current_pdu dynamic with no memory. */
1003                 prs_give_memory(current_pdu, 0, 0, True);
1004                 return NT_STATUS_OK;
1005         }
1006
1007         /*
1008          * Oh no ! More data in buffer than we processed in current pdu.
1009          * Cheat. Move the data down and shrink the buffer.
1010          */
1011
1012         memcpy(prs_data_p(current_pdu), prs_data_p(current_pdu) + prhdr->frag_len,
1013                         current_pdu_len - prhdr->frag_len);
1014
1015         /* Remember to set the read offset back to zero. */
1016         prs_set_offset(current_pdu, 0);
1017
1018         /* Shrink the buffer. */
1019         if (!prs_set_buffer_size(current_pdu, current_pdu_len - prhdr->frag_len)) {
1020                 return NT_STATUS_BUFFER_TOO_SMALL;
1021         }
1022
1023         return NT_STATUS_OK;
1024 }
1025
1026 /****************************************************************************
1027  Call a remote api on an arbitrary pipe.  takes param, data and setup buffers.
1028 ****************************************************************************/
1029
1030 struct cli_api_pipe_state {
1031         struct event_context *ev;
1032         struct rpc_cli_transport *transport;
1033         uint8_t *rdata;
1034         uint32_t rdata_len;
1035 };
1036
1037 static void cli_api_pipe_trans_done(struct tevent_req *subreq);
1038 static void cli_api_pipe_write_done(struct tevent_req *subreq);
1039 static void cli_api_pipe_read_done(struct tevent_req *subreq);
1040
1041 static struct tevent_req *cli_api_pipe_send(TALLOC_CTX *mem_ctx,
1042                                             struct event_context *ev,
1043                                             struct rpc_cli_transport *transport,
1044                                             uint8_t *data, size_t data_len,
1045                                             uint32_t max_rdata_len)
1046 {
1047         struct tevent_req *req, *subreq;
1048         struct cli_api_pipe_state *state;
1049         NTSTATUS status;
1050
1051         req = tevent_req_create(mem_ctx, &state, struct cli_api_pipe_state);
1052         if (req == NULL) {
1053                 return NULL;
1054         }
1055         state->ev = ev;
1056         state->transport = transport;
1057
1058         if (max_rdata_len < RPC_HEADER_LEN) {
1059                 /*
1060                  * For a RPC reply we always need at least RPC_HEADER_LEN
1061                  * bytes. We check this here because we will receive
1062                  * RPC_HEADER_LEN bytes in cli_trans_sock_send_done.
1063                  */
1064                 status = NT_STATUS_INVALID_PARAMETER;
1065                 goto post_status;
1066         }
1067
1068         if (transport->trans_send != NULL) {
1069                 subreq = transport->trans_send(state, ev, data, data_len,
1070                                                max_rdata_len, transport->priv);
1071                 if (subreq == NULL) {
1072                         goto fail;
1073                 }
1074                 tevent_req_set_callback(subreq, cli_api_pipe_trans_done, req);
1075                 return req;
1076         }
1077
1078         /*
1079          * If the transport does not provide a "trans" routine, i.e. for
1080          * example the ncacn_ip_tcp transport, do the write/read step here.
1081          */
1082
1083         subreq = rpc_write_send(state, ev, transport, data, data_len);
1084         if (subreq == NULL) {
1085                 goto fail;
1086         }
1087         tevent_req_set_callback(subreq, cli_api_pipe_write_done, req);
1088         return req;
1089
1090         status = NT_STATUS_INVALID_PARAMETER;
1091
1092  post_status:
1093         tevent_req_nterror(req, status);
1094         return tevent_req_post(req, ev);
1095  fail:
1096         TALLOC_FREE(req);
1097         return NULL;
1098 }
1099
1100 static void cli_api_pipe_trans_done(struct tevent_req *subreq)
1101 {
1102         struct tevent_req *req = tevent_req_callback_data(
1103                 subreq, struct tevent_req);
1104         struct cli_api_pipe_state *state = tevent_req_data(
1105                 req, struct cli_api_pipe_state);
1106         NTSTATUS status;
1107
1108         status = state->transport->trans_recv(subreq, state, &state->rdata,
1109                                               &state->rdata_len);
1110         TALLOC_FREE(subreq);
1111         if (!NT_STATUS_IS_OK(status)) {
1112                 tevent_req_nterror(req, status);
1113                 return;
1114         }
1115         tevent_req_done(req);
1116 }
1117
1118 static void cli_api_pipe_write_done(struct tevent_req *subreq)
1119 {
1120         struct tevent_req *req = tevent_req_callback_data(
1121                 subreq, struct tevent_req);
1122         struct cli_api_pipe_state *state = tevent_req_data(
1123                 req, struct cli_api_pipe_state);
1124         NTSTATUS status;
1125
1126         status = rpc_write_recv(subreq);
1127         TALLOC_FREE(subreq);
1128         if (!NT_STATUS_IS_OK(status)) {
1129                 tevent_req_nterror(req, status);
1130                 return;
1131         }
1132
1133         state->rdata = TALLOC_ARRAY(state, uint8_t, RPC_HEADER_LEN);
1134         if (tevent_req_nomem(state->rdata, req)) {
1135                 return;
1136         }
1137
1138         /*
1139          * We don't need to use rpc_read_send here, the upper layer will cope
1140          * with a short read, transport->trans_send could also return less
1141          * than state->max_rdata_len.
1142          */
1143         subreq = state->transport->read_send(state, state->ev, state->rdata,
1144                                              RPC_HEADER_LEN,
1145                                              state->transport->priv);
1146         if (tevent_req_nomem(subreq, req)) {
1147                 return;
1148         }
1149         tevent_req_set_callback(subreq, cli_api_pipe_read_done, req);
1150 }
1151
1152 static void cli_api_pipe_read_done(struct tevent_req *subreq)
1153 {
1154         struct tevent_req *req = tevent_req_callback_data(
1155                 subreq, struct tevent_req);
1156         struct cli_api_pipe_state *state = tevent_req_data(
1157                 req, struct cli_api_pipe_state);
1158         NTSTATUS status;
1159         ssize_t received;
1160
1161         status = state->transport->read_recv(subreq, &received);
1162         TALLOC_FREE(subreq);
1163         if (!NT_STATUS_IS_OK(status)) {
1164                 tevent_req_nterror(req, status);
1165                 return;
1166         }
1167         state->rdata_len = received;
1168         tevent_req_done(req);
1169 }
1170
1171 static NTSTATUS cli_api_pipe_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
1172                                   uint8_t **prdata, uint32_t *prdata_len)
1173 {
1174         struct cli_api_pipe_state *state = tevent_req_data(
1175                 req, struct cli_api_pipe_state);
1176         NTSTATUS status;
1177
1178         if (tevent_req_is_nterror(req, &status)) {
1179                 return status;
1180         }
1181
1182         *prdata = talloc_move(mem_ctx, &state->rdata);
1183         *prdata_len = state->rdata_len;
1184         return NT_STATUS_OK;
1185 }
1186
1187 /****************************************************************************
1188  Send data on an rpc pipe via trans. The prs_struct data must be the last
1189  pdu fragment of an NDR data stream.
1190
1191  Receive response data from an rpc pipe, which may be large...
1192
1193  Read the first fragment: unfortunately have to use SMBtrans for the first
1194  bit, then SMBreadX for subsequent bits.
1195
1196  If first fragment received also wasn't the last fragment, continue
1197  getting fragments until we _do_ receive the last fragment.
1198
1199  Request/Response PDU's look like the following...
1200
1201  |<------------------PDU len----------------------------------------------->|
1202  |<-HDR_LEN-->|<--REQ LEN------>|.............|<-AUTH_HDRLEN->|<-AUTH_LEN-->|
1203
1204  +------------+-----------------+-------------+---------------+-------------+
1205  | RPC HEADER | REQ/RESP HEADER | DATA ...... | AUTH_HDR      | AUTH DATA   |
1206  +------------+-----------------+-------------+---------------+-------------+
1207
1208  Where the presence of the AUTH_HDR and AUTH DATA are dependent on the
1209  signing & sealing being negotiated.
1210
1211  ****************************************************************************/
1212
1213 struct rpc_api_pipe_state {
1214         struct event_context *ev;
1215         struct rpc_pipe_client *cli;
1216         uint8_t expected_pkt_type;
1217
1218         prs_struct incoming_frag;
1219         struct rpc_hdr_info rhdr;
1220
1221         prs_struct incoming_pdu;        /* Incoming reply */
1222         uint32_t incoming_pdu_offset;
1223 };
1224
1225 static int rpc_api_pipe_state_destructor(struct rpc_api_pipe_state *state)
1226 {
1227         prs_mem_free(&state->incoming_frag);
1228         prs_mem_free(&state->incoming_pdu);
1229         return 0;
1230 }
1231
1232 static void rpc_api_pipe_trans_done(struct tevent_req *subreq);
1233 static void rpc_api_pipe_got_pdu(struct tevent_req *subreq);
1234
1235 static struct tevent_req *rpc_api_pipe_send(TALLOC_CTX *mem_ctx,
1236                                             struct event_context *ev,
1237                                             struct rpc_pipe_client *cli,
1238                                             prs_struct *data, /* Outgoing PDU */
1239                                             uint8_t expected_pkt_type)
1240 {
1241         struct tevent_req *req, *subreq;
1242         struct rpc_api_pipe_state *state;
1243         uint16_t max_recv_frag;
1244         NTSTATUS status;
1245
1246         req = tevent_req_create(mem_ctx, &state, struct rpc_api_pipe_state);
1247         if (req == NULL) {
1248                 return NULL;
1249         }
1250         state->ev = ev;
1251         state->cli = cli;
1252         state->expected_pkt_type = expected_pkt_type;
1253         state->incoming_pdu_offset = 0;
1254
1255         prs_init_empty(&state->incoming_frag, state, UNMARSHALL);
1256
1257         prs_init_empty(&state->incoming_pdu, state, UNMARSHALL);
1258         /* Make incoming_pdu dynamic with no memory. */
1259         prs_give_memory(&state->incoming_pdu, NULL, 0, true);
1260
1261         talloc_set_destructor(state, rpc_api_pipe_state_destructor);
1262
1263         /*
1264          * Ensure we're not sending too much.
1265          */
1266         if (prs_offset(data) > cli->max_xmit_frag) {
1267                 status = NT_STATUS_INVALID_PARAMETER;
1268                 goto post_status;
1269         }
1270
1271         DEBUG(5,("rpc_api_pipe: %s\n", rpccli_pipe_txt(debug_ctx(), cli)));
1272
1273         max_recv_frag = cli->max_recv_frag;
1274
1275 #ifdef DEVELOPER
1276         max_recv_frag = RPC_HEADER_LEN + 10 + (sys_random() % 32);
1277 #endif
1278
1279         subreq = cli_api_pipe_send(state, ev, cli->transport,
1280                                    (uint8_t *)prs_data_p(data),
1281                                    prs_offset(data), max_recv_frag);
1282         if (subreq == NULL) {
1283                 goto fail;
1284         }
1285         tevent_req_set_callback(subreq, rpc_api_pipe_trans_done, req);
1286         return req;
1287
1288  post_status:
1289         tevent_req_nterror(req, status);
1290         return tevent_req_post(req, ev);
1291  fail:
1292         TALLOC_FREE(req);
1293         return NULL;
1294 }
1295
1296 static void rpc_api_pipe_trans_done(struct tevent_req *subreq)
1297 {
1298         struct tevent_req *req = tevent_req_callback_data(
1299                 subreq, struct tevent_req);
1300         struct rpc_api_pipe_state *state = tevent_req_data(
1301                 req, struct rpc_api_pipe_state);
1302         NTSTATUS status;
1303         uint8_t *rdata = NULL;
1304         uint32_t rdata_len = 0;
1305         char *rdata_copy;
1306
1307         status = cli_api_pipe_recv(subreq, state, &rdata, &rdata_len);
1308         TALLOC_FREE(subreq);
1309         if (!NT_STATUS_IS_OK(status)) {
1310                 DEBUG(5, ("cli_api_pipe failed: %s\n", nt_errstr(status)));
1311                 tevent_req_nterror(req, status);
1312                 return;
1313         }
1314
1315         if (rdata == NULL) {
1316                 DEBUG(3,("rpc_api_pipe: %s failed to return data.\n",
1317                          rpccli_pipe_txt(debug_ctx(), state->cli)));
1318                 tevent_req_done(req);
1319                 return;
1320         }
1321
1322         /*
1323          * Give the memory received from cli_trans as dynamic to the current
1324          * pdu. Duplicating it sucks, but prs_struct doesn't know about talloc
1325          * :-(
1326          */
1327         rdata_copy = (char *)memdup(rdata, rdata_len);
1328         TALLOC_FREE(rdata);
1329         if (tevent_req_nomem(rdata_copy, req)) {
1330                 return;
1331         }
1332         prs_give_memory(&state->incoming_frag, rdata_copy, rdata_len, true);
1333
1334         /* Ensure we have enough data for a pdu. */
1335         subreq = get_complete_frag_send(state, state->ev, state->cli,
1336                                         &state->rhdr, &state->incoming_frag);
1337         if (tevent_req_nomem(subreq, req)) {
1338                 return;
1339         }
1340         tevent_req_set_callback(subreq, rpc_api_pipe_got_pdu, req);
1341 }
1342
1343 static void rpc_api_pipe_got_pdu(struct tevent_req *subreq)
1344 {
1345         struct tevent_req *req = tevent_req_callback_data(
1346                 subreq, struct tevent_req);
1347         struct rpc_api_pipe_state *state = tevent_req_data(
1348                 req, struct rpc_api_pipe_state);
1349         NTSTATUS status;
1350         char *rdata = NULL;
1351         uint32_t rdata_len = 0;
1352
1353         status = get_complete_frag_recv(subreq);
1354         TALLOC_FREE(subreq);
1355         if (!NT_STATUS_IS_OK(status)) {
1356                 DEBUG(5, ("get_complete_frag failed: %s\n",
1357                           nt_errstr(status)));
1358                 tevent_req_nterror(req, status);
1359                 return;
1360         }
1361
1362         status = cli_pipe_validate_current_pdu(
1363                 state->cli, &state->rhdr, &state->incoming_frag,
1364                 state->expected_pkt_type, &rdata, &rdata_len,
1365                 &state->incoming_pdu);
1366
1367         DEBUG(10,("rpc_api_pipe: got frag len of %u at offset %u: %s\n",
1368                   (unsigned)prs_data_size(&state->incoming_frag),
1369                   (unsigned)state->incoming_pdu_offset,
1370                   nt_errstr(status)));
1371
1372         if (!NT_STATUS_IS_OK(status)) {
1373                 tevent_req_nterror(req, status);
1374                 return;
1375         }
1376
1377         if ((state->rhdr.flags & RPC_FLG_FIRST)
1378             && (state->rhdr.pack_type[0] == 0)) {
1379                 /*
1380                  * Set the data type correctly for big-endian data on the
1381                  * first packet.
1382                  */
1383                 DEBUG(10,("rpc_api_pipe: On %s PDU data format is "
1384                           "big-endian.\n",
1385                           rpccli_pipe_txt(debug_ctx(), state->cli)));
1386                 prs_set_endian_data(&state->incoming_pdu, RPC_BIG_ENDIAN);
1387         }
1388         /*
1389          * Check endianness on subsequent packets.
1390          */
1391         if (state->incoming_frag.bigendian_data
1392             != state->incoming_pdu.bigendian_data) {
1393                 DEBUG(0,("rpc_api_pipe: Error : Endianness changed from %s to "
1394                          "%s\n",
1395                          state->incoming_pdu.bigendian_data?"big":"little",
1396                          state->incoming_frag.bigendian_data?"big":"little"));
1397                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
1398                 return;
1399         }
1400
1401         /* Now copy the data portion out of the pdu into rbuf. */
1402         if (!prs_force_grow(&state->incoming_pdu, rdata_len)) {
1403                 tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
1404                 return;
1405         }
1406
1407         memcpy(prs_data_p(&state->incoming_pdu) + state->incoming_pdu_offset,
1408                rdata, (size_t)rdata_len);
1409         state->incoming_pdu_offset += rdata_len;
1410
1411         status = cli_pipe_reset_current_pdu(state->cli, &state->rhdr,
1412                                             &state->incoming_frag);
1413         if (!NT_STATUS_IS_OK(status)) {
1414                 tevent_req_nterror(req, status);
1415                 return;
1416         }
1417
1418         if (state->rhdr.flags & RPC_FLG_LAST) {
1419                 DEBUG(10,("rpc_api_pipe: %s returned %u bytes.\n",
1420                           rpccli_pipe_txt(debug_ctx(), state->cli),
1421                           (unsigned)prs_data_size(&state->incoming_pdu)));
1422                 tevent_req_done(req);
1423                 return;
1424         }
1425
1426         subreq = get_complete_frag_send(state, state->ev, state->cli,
1427                                         &state->rhdr, &state->incoming_frag);
1428         if (tevent_req_nomem(subreq, req)) {
1429                 return;
1430         }
1431         tevent_req_set_callback(subreq, rpc_api_pipe_got_pdu, req);
1432 }
1433
1434 static NTSTATUS rpc_api_pipe_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
1435                                   prs_struct *reply_pdu)
1436 {
1437         struct rpc_api_pipe_state *state = tevent_req_data(
1438                 req, struct rpc_api_pipe_state);
1439         NTSTATUS status;
1440
1441         if (tevent_req_is_nterror(req, &status)) {
1442                 return status;
1443         }
1444
1445         *reply_pdu = state->incoming_pdu;
1446         reply_pdu->mem_ctx = mem_ctx;
1447
1448         /*
1449          * Prevent state->incoming_pdu from being freed in
1450          * rpc_api_pipe_state_destructor()
1451          */
1452         prs_init_empty(&state->incoming_pdu, state, UNMARSHALL);
1453
1454         return NT_STATUS_OK;
1455 }
1456
1457 /*******************************************************************
1458  Creates krb5 auth bind.
1459  ********************************************************************/
1460
1461 static NTSTATUS create_krb5_auth_bind_req( struct rpc_pipe_client *cli,
1462                                                 enum pipe_auth_level auth_level,
1463                                                 RPC_HDR_AUTH *pauth_out,
1464                                                 prs_struct *auth_data)
1465 {
1466 #ifdef HAVE_KRB5
1467         int ret;
1468         struct kerberos_auth_struct *a = cli->auth->a_u.kerberos_auth;
1469         DATA_BLOB tkt = data_blob_null;
1470         DATA_BLOB tkt_wrapped = data_blob_null;
1471
1472         /* We may change the pad length before marshalling. */
1473         init_rpc_hdr_auth(pauth_out, RPC_KRB5_AUTH_TYPE, (int)auth_level, 0, 1);
1474
1475         DEBUG(5, ("create_krb5_auth_bind_req: creating a service ticket for principal %s\n",
1476                 a->service_principal ));
1477
1478         /* Create the ticket for the service principal and return it in a gss-api wrapped blob. */
1479
1480         ret = cli_krb5_get_ticket(a->service_principal, 0, &tkt,
1481                         &a->session_key, (uint32)AP_OPTS_MUTUAL_REQUIRED, NULL, NULL);
1482
1483         if (ret) {
1484                 DEBUG(1,("create_krb5_auth_bind_req: cli_krb5_get_ticket for principal %s "
1485                         "failed with %s\n",
1486                         a->service_principal,
1487                         error_message(ret) ));
1488
1489                 data_blob_free(&tkt);
1490                 prs_mem_free(auth_data);
1491                 return NT_STATUS_INVALID_PARAMETER;
1492         }
1493
1494         /* wrap that up in a nice GSS-API wrapping */
1495         tkt_wrapped = spnego_gen_krb5_wrap(tkt, TOK_ID_KRB_AP_REQ);
1496
1497         data_blob_free(&tkt);
1498
1499         /* Auth len in the rpc header doesn't include auth_header. */
1500         if (!prs_copy_data_in(auth_data, (char *)tkt_wrapped.data, tkt_wrapped.length)) {
1501                 data_blob_free(&tkt_wrapped);
1502                 prs_mem_free(auth_data);
1503                 return NT_STATUS_NO_MEMORY;
1504         }
1505
1506         DEBUG(5, ("create_krb5_auth_bind_req: Created krb5 GSS blob :\n"));
1507         dump_data(5, tkt_wrapped.data, tkt_wrapped.length);
1508
1509         data_blob_free(&tkt_wrapped);
1510         return NT_STATUS_OK;
1511 #else
1512         return NT_STATUS_INVALID_PARAMETER;
1513 #endif
1514 }
1515
1516 /*******************************************************************
1517  Creates SPNEGO NTLMSSP auth bind.
1518  ********************************************************************/
1519
1520 static NTSTATUS create_spnego_ntlmssp_auth_rpc_bind_req( struct rpc_pipe_client *cli,
1521                                                 enum pipe_auth_level auth_level,
1522                                                 RPC_HDR_AUTH *pauth_out,
1523                                                 prs_struct *auth_data)
1524 {
1525         NTSTATUS nt_status;
1526         DATA_BLOB null_blob = data_blob_null;
1527         DATA_BLOB request = data_blob_null;
1528         DATA_BLOB spnego_msg = data_blob_null;
1529
1530         /* We may change the pad length before marshalling. */
1531         init_rpc_hdr_auth(pauth_out, RPC_SPNEGO_AUTH_TYPE, (int)auth_level, 0, 1);
1532
1533         DEBUG(5, ("create_spnego_ntlmssp_auth_rpc_bind_req: Processing NTLMSSP Negotiate\n"));
1534         nt_status = ntlmssp_update(cli->auth->a_u.ntlmssp_state,
1535                                         null_blob,
1536                                         &request);
1537
1538         if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1539                 data_blob_free(&request);
1540                 prs_mem_free(auth_data);
1541                 return nt_status;
1542         }
1543
1544         /* Wrap this in SPNEGO. */
1545         spnego_msg = gen_negTokenInit(OID_NTLMSSP, request);
1546
1547         data_blob_free(&request);
1548
1549         /* Auth len in the rpc header doesn't include auth_header. */
1550         if (!prs_copy_data_in(auth_data, (char *)spnego_msg.data, spnego_msg.length)) {
1551                 data_blob_free(&spnego_msg);
1552                 prs_mem_free(auth_data);
1553                 return NT_STATUS_NO_MEMORY;
1554         }
1555
1556         DEBUG(5, ("create_spnego_ntlmssp_auth_rpc_bind_req: NTLMSSP Negotiate:\n"));
1557         dump_data(5, spnego_msg.data, spnego_msg.length);
1558
1559         data_blob_free(&spnego_msg);
1560         return NT_STATUS_OK;
1561 }
1562
1563 /*******************************************************************
1564  Creates NTLMSSP auth bind.
1565  ********************************************************************/
1566
1567 static NTSTATUS create_ntlmssp_auth_rpc_bind_req( struct rpc_pipe_client *cli,
1568                                                 enum pipe_auth_level auth_level,
1569                                                 RPC_HDR_AUTH *pauth_out,
1570                                                 prs_struct *auth_data)
1571 {
1572         NTSTATUS nt_status;
1573         DATA_BLOB null_blob = data_blob_null;
1574         DATA_BLOB request = data_blob_null;
1575
1576         /* We may change the pad length before marshalling. */
1577         init_rpc_hdr_auth(pauth_out, RPC_NTLMSSP_AUTH_TYPE, (int)auth_level, 0, 1);
1578
1579         DEBUG(5, ("create_ntlmssp_auth_rpc_bind_req: Processing NTLMSSP Negotiate\n"));
1580         nt_status = ntlmssp_update(cli->auth->a_u.ntlmssp_state,
1581                                         null_blob,
1582                                         &request);
1583
1584         if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1585                 data_blob_free(&request);
1586                 prs_mem_free(auth_data);
1587                 return nt_status;
1588         }
1589
1590         /* Auth len in the rpc header doesn't include auth_header. */
1591         if (!prs_copy_data_in(auth_data, (char *)request.data, request.length)) {
1592                 data_blob_free(&request);
1593                 prs_mem_free(auth_data);
1594                 return NT_STATUS_NO_MEMORY;
1595         }
1596
1597         DEBUG(5, ("create_ntlmssp_auth_rpc_bind_req: NTLMSSP Negotiate:\n"));
1598         dump_data(5, request.data, request.length);
1599
1600         data_blob_free(&request);
1601         return NT_STATUS_OK;
1602 }
1603
1604 /*******************************************************************
1605  Creates schannel auth bind.
1606  ********************************************************************/
1607
1608 static NTSTATUS create_schannel_auth_rpc_bind_req( struct rpc_pipe_client *cli,
1609                                                 enum pipe_auth_level auth_level,
1610                                                 RPC_HDR_AUTH *pauth_out,
1611                                                 prs_struct *auth_data)
1612 {
1613         RPC_AUTH_SCHANNEL_NEG schannel_neg;
1614
1615         /* We may change the pad length before marshalling. */
1616         init_rpc_hdr_auth(pauth_out, RPC_SCHANNEL_AUTH_TYPE, (int)auth_level, 0, 1);
1617
1618         /* Use lp_workgroup() if domain not specified */
1619
1620         if (!cli->auth->domain || !cli->auth->domain[0]) {
1621                 cli->auth->domain = talloc_strdup(cli, lp_workgroup());
1622                 if (cli->auth->domain == NULL) {
1623                         return NT_STATUS_NO_MEMORY;
1624                 }
1625         }
1626
1627         init_rpc_auth_schannel_neg(&schannel_neg, cli->auth->domain,
1628                                    global_myname());
1629
1630         /*
1631          * Now marshall the data into the auth parse_struct.
1632          */
1633
1634         if(!smb_io_rpc_auth_schannel_neg("schannel_neg",
1635                                        &schannel_neg, auth_data, 0)) {
1636                 DEBUG(0,("Failed to marshall RPC_AUTH_SCHANNEL_NEG.\n"));
1637                 prs_mem_free(auth_data);
1638                 return NT_STATUS_NO_MEMORY;
1639         }
1640
1641         return NT_STATUS_OK;
1642 }
1643
1644 /*******************************************************************
1645  Creates the internals of a DCE/RPC bind request or alter context PDU.
1646  ********************************************************************/
1647
1648 static NTSTATUS create_bind_or_alt_ctx_internal(enum RPC_PKT_TYPE pkt_type,
1649                                                 prs_struct *rpc_out,
1650                                                 uint32 rpc_call_id,
1651                                                 const RPC_IFACE *abstract,
1652                                                 const RPC_IFACE *transfer,
1653                                                 RPC_HDR_AUTH *phdr_auth,
1654                                                 prs_struct *pauth_info)
1655 {
1656         RPC_HDR hdr;
1657         RPC_HDR_RB hdr_rb;
1658         RPC_CONTEXT rpc_ctx;
1659         uint16 auth_len = prs_offset(pauth_info);
1660         uint8 ss_padding_len = 0;
1661         uint16 frag_len = 0;
1662
1663         /* create the RPC context. */
1664         init_rpc_context(&rpc_ctx, 0 /* context id */, abstract, transfer);
1665
1666         /* create the bind request RPC_HDR_RB */
1667         init_rpc_hdr_rb(&hdr_rb, RPC_MAX_PDU_FRAG_LEN, RPC_MAX_PDU_FRAG_LEN, 0x0, &rpc_ctx);
1668
1669         /* Start building the frag length. */
1670         frag_len = RPC_HEADER_LEN + RPC_HDR_RB_LEN(&hdr_rb);
1671
1672         /* Do we need to pad ? */
1673         if (auth_len) {
1674                 uint16 data_len = RPC_HEADER_LEN + RPC_HDR_RB_LEN(&hdr_rb);
1675                 if (data_len % 8) {
1676                         ss_padding_len = 8 - (data_len % 8);
1677                         phdr_auth->auth_pad_len = ss_padding_len;
1678                 }
1679                 frag_len += RPC_HDR_AUTH_LEN + auth_len + ss_padding_len;
1680         }
1681
1682         /* Create the request RPC_HDR */
1683         init_rpc_hdr(&hdr, pkt_type, RPC_FLG_FIRST|RPC_FLG_LAST, rpc_call_id, frag_len, auth_len);
1684
1685         /* Marshall the RPC header */
1686         if(!smb_io_rpc_hdr("hdr"   , &hdr, rpc_out, 0)) {
1687                 DEBUG(0,("create_bind_or_alt_ctx_internal: failed to marshall RPC_HDR.\n"));
1688                 return NT_STATUS_NO_MEMORY;
1689         }
1690
1691         /* Marshall the bind request data */
1692         if(!smb_io_rpc_hdr_rb("", &hdr_rb, rpc_out, 0)) {
1693                 DEBUG(0,("create_bind_or_alt_ctx_internal: failed to marshall RPC_HDR_RB.\n"));
1694                 return NT_STATUS_NO_MEMORY;
1695         }
1696
1697         /*
1698          * Grow the outgoing buffer to store any auth info.
1699          */
1700
1701         if(auth_len != 0) {
1702                 if (ss_padding_len) {
1703                         char pad[8];
1704                         memset(pad, '\0', 8);
1705                         if (!prs_copy_data_in(rpc_out, pad, ss_padding_len)) {
1706                                 DEBUG(0,("create_bind_or_alt_ctx_internal: failed to marshall padding.\n"));
1707                                 return NT_STATUS_NO_MEMORY;
1708                         }
1709                 }
1710
1711                 if(!smb_io_rpc_hdr_auth("hdr_auth", phdr_auth, rpc_out, 0)) {
1712                         DEBUG(0,("create_bind_or_alt_ctx_internal: failed to marshall RPC_HDR_AUTH.\n"));
1713                         return NT_STATUS_NO_MEMORY;
1714                 }
1715
1716
1717                 if(!prs_append_prs_data( rpc_out, pauth_info)) {
1718                         DEBUG(0,("create_bind_or_alt_ctx_internal: failed to grow parse struct to add auth.\n"));
1719                         return NT_STATUS_NO_MEMORY;
1720                 }
1721         }
1722
1723         return NT_STATUS_OK;
1724 }
1725
1726 /*******************************************************************
1727  Creates a DCE/RPC bind request.
1728  ********************************************************************/
1729
1730 static NTSTATUS create_rpc_bind_req(struct rpc_pipe_client *cli,
1731                                 prs_struct *rpc_out,
1732                                 uint32 rpc_call_id,
1733                                 const RPC_IFACE *abstract,
1734                                 const RPC_IFACE *transfer,
1735                                 enum pipe_auth_type auth_type,
1736                                 enum pipe_auth_level auth_level)
1737 {
1738         RPC_HDR_AUTH hdr_auth;
1739         prs_struct auth_info;
1740         NTSTATUS ret = NT_STATUS_OK;
1741
1742         ZERO_STRUCT(hdr_auth);
1743         if (!prs_init(&auth_info, RPC_HDR_AUTH_LEN, prs_get_mem_context(rpc_out), MARSHALL))
1744                 return NT_STATUS_NO_MEMORY;
1745
1746         switch (auth_type) {
1747                 case PIPE_AUTH_TYPE_SCHANNEL:
1748                         ret = create_schannel_auth_rpc_bind_req(cli, auth_level, &hdr_auth, &auth_info);
1749                         if (!NT_STATUS_IS_OK(ret)) {
1750                                 prs_mem_free(&auth_info);
1751                                 return ret;
1752                         }
1753                         break;
1754
1755                 case PIPE_AUTH_TYPE_NTLMSSP:
1756                         ret = create_ntlmssp_auth_rpc_bind_req(cli, auth_level, &hdr_auth, &auth_info);
1757                         if (!NT_STATUS_IS_OK(ret)) {
1758                                 prs_mem_free(&auth_info);
1759                                 return ret;
1760                         }
1761                         break;
1762
1763                 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
1764                         ret = create_spnego_ntlmssp_auth_rpc_bind_req(cli, auth_level, &hdr_auth, &auth_info);
1765                         if (!NT_STATUS_IS_OK(ret)) {
1766                                 prs_mem_free(&auth_info);
1767                                 return ret;
1768                         }
1769                         break;
1770
1771                 case PIPE_AUTH_TYPE_KRB5:
1772                         ret = create_krb5_auth_bind_req(cli, auth_level, &hdr_auth, &auth_info);
1773                         if (!NT_STATUS_IS_OK(ret)) {
1774                                 prs_mem_free(&auth_info);
1775                                 return ret;
1776                         }
1777                         break;
1778
1779                 case PIPE_AUTH_TYPE_NONE:
1780                         break;
1781
1782                 default:
1783                         /* "Can't" happen. */
1784                         return NT_STATUS_INVALID_INFO_CLASS;
1785         }
1786
1787         ret = create_bind_or_alt_ctx_internal(RPC_BIND,
1788                                                 rpc_out,
1789                                                 rpc_call_id,
1790                                                 abstract,
1791                                                 transfer,
1792                                                 &hdr_auth,
1793                                                 &auth_info);
1794
1795         prs_mem_free(&auth_info);
1796         return ret;
1797 }
1798
1799 /*******************************************************************
1800  Create and add the NTLMSSP sign/seal auth header and data.
1801  ********************************************************************/
1802
1803 static NTSTATUS add_ntlmssp_auth_footer(struct rpc_pipe_client *cli,
1804                                         RPC_HDR *phdr,
1805                                         uint32 ss_padding_len,
1806                                         prs_struct *outgoing_pdu)
1807 {
1808         RPC_HDR_AUTH auth_info;
1809         NTSTATUS status;
1810         DATA_BLOB auth_blob = data_blob_null;
1811         uint16 data_and_pad_len = prs_offset(outgoing_pdu) - RPC_HEADER_LEN - RPC_HDR_RESP_LEN;
1812
1813         if (!cli->auth->a_u.ntlmssp_state) {
1814                 return NT_STATUS_INVALID_PARAMETER;
1815         }
1816
1817         /* Init and marshall the auth header. */
1818         init_rpc_hdr_auth(&auth_info,
1819                         map_pipe_auth_type_to_rpc_auth_type(
1820                                 cli->auth->auth_type),
1821                         cli->auth->auth_level,
1822                         ss_padding_len,
1823                         1 /* context id. */);
1824
1825         if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, outgoing_pdu, 0)) {
1826                 DEBUG(0,("add_ntlmssp_auth_footer: failed to marshall RPC_HDR_AUTH.\n"));
1827                 data_blob_free(&auth_blob);
1828                 return NT_STATUS_NO_MEMORY;
1829         }
1830
1831         switch (cli->auth->auth_level) {
1832                 case PIPE_AUTH_LEVEL_PRIVACY:
1833                         /* Data portion is encrypted. */
1834                         status = ntlmssp_seal_packet(cli->auth->a_u.ntlmssp_state,
1835                                         (unsigned char *)prs_data_p(outgoing_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN,
1836                                         data_and_pad_len,
1837                                         (unsigned char *)prs_data_p(outgoing_pdu),
1838                                         (size_t)prs_offset(outgoing_pdu),
1839                                         &auth_blob);
1840                         if (!NT_STATUS_IS_OK(status)) {
1841                                 data_blob_free(&auth_blob);
1842                                 return status;
1843                         }
1844                         break;
1845
1846                 case PIPE_AUTH_LEVEL_INTEGRITY:
1847                         /* Data is signed. */
1848                         status = ntlmssp_sign_packet(cli->auth->a_u.ntlmssp_state,
1849                                         (unsigned char *)prs_data_p(outgoing_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN,
1850                                         data_and_pad_len,
1851                                         (unsigned char *)prs_data_p(outgoing_pdu),
1852                                         (size_t)prs_offset(outgoing_pdu),
1853                                         &auth_blob);
1854                         if (!NT_STATUS_IS_OK(status)) {
1855                                 data_blob_free(&auth_blob);
1856                                 return status;
1857                         }
1858                         break;
1859
1860                 default:
1861                         /* Can't happen. */
1862                         smb_panic("bad auth level");
1863                         /* Notreached. */
1864                         return NT_STATUS_INVALID_PARAMETER;
1865         }
1866
1867         /* Finally marshall the blob. */
1868
1869         if (!prs_copy_data_in(outgoing_pdu, (const char *)auth_blob.data, NTLMSSP_SIG_SIZE)) {
1870                 DEBUG(0,("add_ntlmssp_auth_footer: failed to add %u bytes auth blob.\n",
1871                         (unsigned int)NTLMSSP_SIG_SIZE));
1872                 data_blob_free(&auth_blob);
1873                 return NT_STATUS_NO_MEMORY;
1874         }
1875
1876         data_blob_free(&auth_blob);
1877         return NT_STATUS_OK;
1878 }
1879
1880 /*******************************************************************
1881  Create and add the schannel sign/seal auth header and data.
1882  ********************************************************************/
1883
1884 static NTSTATUS add_schannel_auth_footer(struct rpc_pipe_client *cli,
1885                                         RPC_HDR *phdr,
1886                                         uint32 ss_padding_len,
1887                                         prs_struct *outgoing_pdu)
1888 {
1889         RPC_HDR_AUTH auth_info;
1890         RPC_AUTH_SCHANNEL_CHK verf;
1891         struct schannel_auth_struct *sas = cli->auth->a_u.schannel_auth;
1892         char *data_p = prs_data_p(outgoing_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN;
1893         size_t data_and_pad_len = prs_offset(outgoing_pdu) - RPC_HEADER_LEN - RPC_HDR_RESP_LEN;
1894
1895         if (!sas) {
1896                 return NT_STATUS_INVALID_PARAMETER;
1897         }
1898
1899         /* Init and marshall the auth header. */
1900         init_rpc_hdr_auth(&auth_info,
1901                         map_pipe_auth_type_to_rpc_auth_type(cli->auth->auth_type),
1902                         cli->auth->auth_level,
1903                         ss_padding_len,
1904                         1 /* context id. */);
1905
1906         if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, outgoing_pdu, 0)) {
1907                 DEBUG(0,("add_schannel_auth_footer: failed to marshall RPC_HDR_AUTH.\n"));
1908                 return NT_STATUS_NO_MEMORY;
1909         }
1910
1911         switch (cli->auth->auth_level) {
1912                 case PIPE_AUTH_LEVEL_PRIVACY:
1913                 case PIPE_AUTH_LEVEL_INTEGRITY:
1914                         DEBUG(10,("add_schannel_auth_footer: SCHANNEL seq_num=%d\n",
1915                                 sas->seq_num));
1916
1917                         schannel_encode(sas,
1918                                         cli->auth->auth_level,
1919                                         SENDER_IS_INITIATOR,
1920                                         &verf,
1921                                         data_p,
1922                                         data_and_pad_len);
1923
1924                         sas->seq_num++;
1925                         break;
1926
1927                 default:
1928                         /* Can't happen. */
1929                         smb_panic("bad auth level");
1930                         /* Notreached. */
1931                         return NT_STATUS_INVALID_PARAMETER;
1932         }
1933
1934         /* Finally marshall the blob. */
1935         smb_io_rpc_auth_schannel_chk("",
1936                         RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN,
1937                         &verf,
1938                         outgoing_pdu,
1939                         0);
1940
1941         return NT_STATUS_OK;
1942 }
1943
1944 /*******************************************************************
1945  Calculate how much data we're going to send in this packet, also
1946  work out any sign/seal padding length.
1947  ********************************************************************/
1948
1949 static uint32 calculate_data_len_tosend(struct rpc_pipe_client *cli,
1950                                         uint32 data_left,
1951                                         uint16 *p_frag_len,
1952                                         uint16 *p_auth_len,
1953                                         uint32 *p_ss_padding)
1954 {
1955         uint32 data_space, data_len;
1956
1957 #ifdef DEVELOPER
1958         if ((data_left > 0) && (sys_random() % 2)) {
1959                 data_left = MAX(data_left/2, 1);
1960         }
1961 #endif
1962
1963         switch (cli->auth->auth_level) {
1964                 case PIPE_AUTH_LEVEL_NONE:
1965                 case PIPE_AUTH_LEVEL_CONNECT:
1966                         data_space = cli->max_xmit_frag - RPC_HEADER_LEN - RPC_HDR_REQ_LEN;
1967                         data_len = MIN(data_space, data_left);
1968                         *p_ss_padding = 0;
1969                         *p_auth_len = 0;
1970                         *p_frag_len = RPC_HEADER_LEN + RPC_HDR_REQ_LEN + data_len;
1971                         return data_len;
1972
1973                 case PIPE_AUTH_LEVEL_INTEGRITY:
1974                 case PIPE_AUTH_LEVEL_PRIVACY:
1975                         /* Treat the same for all authenticated rpc requests. */
1976                         switch(cli->auth->auth_type) {
1977                                 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
1978                                 case PIPE_AUTH_TYPE_NTLMSSP:
1979                                         *p_auth_len = NTLMSSP_SIG_SIZE;
1980                                         break;
1981                                 case PIPE_AUTH_TYPE_SCHANNEL:
1982                                         *p_auth_len = RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN;
1983                                         break;
1984                                 default:
1985                                         smb_panic("bad auth type");
1986                                         break;
1987                         }
1988
1989                         data_space = cli->max_xmit_frag - RPC_HEADER_LEN - RPC_HDR_REQ_LEN -
1990                                                 RPC_HDR_AUTH_LEN - *p_auth_len;
1991
1992                         data_len = MIN(data_space, data_left);
1993                         *p_ss_padding = 0;
1994                         if (data_len % 8) {
1995                                 *p_ss_padding = 8 - (data_len % 8);
1996                         }
1997                         *p_frag_len = RPC_HEADER_LEN + RPC_HDR_REQ_LEN +                /* Normal headers. */
1998                                         data_len + *p_ss_padding +              /* data plus padding. */
1999                                         RPC_HDR_AUTH_LEN + *p_auth_len;         /* Auth header and auth data. */
2000                         return data_len;
2001
2002                 default:
2003                         smb_panic("bad auth level");
2004                         /* Notreached. */
2005                         return 0;
2006         }
2007 }
2008
2009 /*******************************************************************
2010  External interface.
2011  Does an rpc request on a pipe. Incoming data is NDR encoded in in_data.
2012  Reply is NDR encoded in out_data. Splits the data stream into RPC PDU's
2013  and deals with signing/sealing details.
2014  ********************************************************************/
2015
2016 struct rpc_api_pipe_req_state {
2017         struct event_context *ev;
2018         struct rpc_pipe_client *cli;
2019         uint8_t op_num;
2020         uint32_t call_id;
2021         prs_struct *req_data;
2022         uint32_t req_data_sent;
2023         prs_struct outgoing_frag;
2024         prs_struct reply_pdu;
2025 };
2026
2027 static int rpc_api_pipe_req_state_destructor(struct rpc_api_pipe_req_state *s)
2028 {
2029         prs_mem_free(&s->outgoing_frag);
2030         prs_mem_free(&s->reply_pdu);
2031         return 0;
2032 }
2033
2034 static void rpc_api_pipe_req_write_done(struct tevent_req *subreq);
2035 static void rpc_api_pipe_req_done(struct tevent_req *subreq);
2036 static NTSTATUS prepare_next_frag(struct rpc_api_pipe_req_state *state,
2037                                   bool *is_last_frag);
2038
2039 struct tevent_req *rpc_api_pipe_req_send(TALLOC_CTX *mem_ctx,
2040                                          struct event_context *ev,
2041                                          struct rpc_pipe_client *cli,
2042                                          uint8_t op_num,
2043                                          prs_struct *req_data)
2044 {
2045         struct tevent_req *req, *subreq;
2046         struct rpc_api_pipe_req_state *state;
2047         NTSTATUS status;
2048         bool is_last_frag;
2049
2050         req = tevent_req_create(mem_ctx, &state,
2051                                 struct rpc_api_pipe_req_state);
2052         if (req == NULL) {
2053                 return NULL;
2054         }
2055         state->ev = ev;
2056         state->cli = cli;
2057         state->op_num = op_num;
2058         state->req_data = req_data;
2059         state->req_data_sent = 0;
2060         state->call_id = get_rpc_call_id();
2061
2062         if (cli->max_xmit_frag
2063             < RPC_HEADER_LEN + RPC_HDR_REQ_LEN + RPC_MAX_SIGN_SIZE) {
2064                 /* Server is screwed up ! */
2065                 status = NT_STATUS_INVALID_PARAMETER;
2066                 goto post_status;
2067         }
2068
2069         prs_init_empty(&state->reply_pdu, state, UNMARSHALL);
2070
2071         if (!prs_init(&state->outgoing_frag, cli->max_xmit_frag,
2072                       state, MARSHALL)) {
2073                 goto fail;
2074         }
2075
2076         talloc_set_destructor(state, rpc_api_pipe_req_state_destructor);
2077
2078         status = prepare_next_frag(state, &is_last_frag);
2079         if (!NT_STATUS_IS_OK(status)) {
2080                 goto post_status;
2081         }
2082
2083         if (is_last_frag) {
2084                 subreq = rpc_api_pipe_send(state, ev, state->cli,
2085                                            &state->outgoing_frag,
2086                                            RPC_RESPONSE);
2087                 if (subreq == NULL) {
2088                         goto fail;
2089                 }
2090                 tevent_req_set_callback(subreq, rpc_api_pipe_req_done, req);
2091         } else {
2092                 subreq = rpc_write_send(
2093                         state, ev, cli->transport,
2094                         (uint8_t *)prs_data_p(&state->outgoing_frag),
2095                         prs_offset(&state->outgoing_frag));
2096                 if (subreq == NULL) {
2097                         goto fail;
2098                 }
2099                 tevent_req_set_callback(subreq, rpc_api_pipe_req_write_done,
2100                                         req);
2101         }
2102         return req;
2103
2104  post_status:
2105         tevent_req_nterror(req, status);
2106         return tevent_req_post(req, ev);
2107  fail:
2108         TALLOC_FREE(req);
2109         return NULL;
2110 }
2111
2112 static NTSTATUS prepare_next_frag(struct rpc_api_pipe_req_state *state,
2113                                   bool *is_last_frag)
2114 {
2115         RPC_HDR hdr;
2116         RPC_HDR_REQ hdr_req;
2117         uint32_t data_sent_thistime;
2118         uint16_t auth_len;
2119         uint16_t frag_len;
2120         uint8_t flags = 0;
2121         uint32_t ss_padding;
2122         uint32_t data_left;
2123         char pad[8] = { 0, };
2124         NTSTATUS status;
2125
2126         data_left = prs_offset(state->req_data) - state->req_data_sent;
2127
2128         data_sent_thistime = calculate_data_len_tosend(
2129                 state->cli, data_left, &frag_len, &auth_len, &ss_padding);
2130
2131         if (state->req_data_sent == 0) {
2132                 flags = RPC_FLG_FIRST;
2133         }
2134
2135         if (data_sent_thistime == data_left) {
2136                 flags |= RPC_FLG_LAST;
2137         }
2138
2139         if (!prs_set_offset(&state->outgoing_frag, 0)) {
2140                 return NT_STATUS_NO_MEMORY;
2141         }
2142
2143         /* Create and marshall the header and request header. */
2144         init_rpc_hdr(&hdr, RPC_REQUEST, flags, state->call_id, frag_len,
2145                      auth_len);
2146
2147         if (!smb_io_rpc_hdr("hdr    ", &hdr, &state->outgoing_frag, 0)) {
2148                 return NT_STATUS_NO_MEMORY;
2149         }
2150
2151         /* Create the rpc request RPC_HDR_REQ */
2152         init_rpc_hdr_req(&hdr_req, prs_offset(state->req_data),
2153                          state->op_num);
2154
2155         if (!smb_io_rpc_hdr_req("hdr_req", &hdr_req,
2156                                 &state->outgoing_frag, 0)) {
2157                 return NT_STATUS_NO_MEMORY;
2158         }
2159
2160         /* Copy in the data, plus any ss padding. */
2161         if (!prs_append_some_prs_data(&state->outgoing_frag,
2162                                       state->req_data, state->req_data_sent,
2163                                       data_sent_thistime)) {
2164                 return NT_STATUS_NO_MEMORY;
2165         }
2166
2167         /* Copy the sign/seal padding data. */
2168         if (!prs_copy_data_in(&state->outgoing_frag, pad, ss_padding)) {
2169                 return NT_STATUS_NO_MEMORY;
2170         }
2171
2172         /* Generate any auth sign/seal and add the auth footer. */
2173         switch (state->cli->auth->auth_type) {
2174         case PIPE_AUTH_TYPE_NONE:
2175                 status = NT_STATUS_OK;
2176                 break;
2177         case PIPE_AUTH_TYPE_NTLMSSP:
2178         case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
2179                 status = add_ntlmssp_auth_footer(state->cli, &hdr, ss_padding,
2180                                                  &state->outgoing_frag);
2181                 break;
2182         case PIPE_AUTH_TYPE_SCHANNEL:
2183                 status = add_schannel_auth_footer(state->cli, &hdr, ss_padding,
2184                                                   &state->outgoing_frag);
2185                 break;
2186         default:
2187                 status = NT_STATUS_INVALID_PARAMETER;
2188                 break;
2189         }
2190
2191         state->req_data_sent += data_sent_thistime;
2192         *is_last_frag = ((flags & RPC_FLG_LAST) != 0);
2193
2194         return status;
2195 }
2196
2197 static void rpc_api_pipe_req_write_done(struct tevent_req *subreq)
2198 {
2199         struct tevent_req *req = tevent_req_callback_data(
2200                 subreq, struct tevent_req);
2201         struct rpc_api_pipe_req_state *state = tevent_req_data(
2202                 req, struct rpc_api_pipe_req_state);
2203         NTSTATUS status;
2204         bool is_last_frag;
2205
2206         status = rpc_write_recv(subreq);
2207         TALLOC_FREE(subreq);
2208         if (!NT_STATUS_IS_OK(status)) {
2209                 tevent_req_nterror(req, status);
2210                 return;
2211         }
2212
2213         status = prepare_next_frag(state, &is_last_frag);
2214         if (!NT_STATUS_IS_OK(status)) {
2215                 tevent_req_nterror(req, status);
2216                 return;
2217         }
2218
2219         if (is_last_frag) {
2220                 subreq = rpc_api_pipe_send(state, state->ev, state->cli,
2221                                            &state->outgoing_frag,
2222                                            RPC_RESPONSE);
2223                 if (tevent_req_nomem(subreq, req)) {
2224                         return;
2225                 }
2226                 tevent_req_set_callback(subreq, rpc_api_pipe_req_done, req);
2227         } else {
2228                 subreq = rpc_write_send(
2229                         state, state->ev,
2230                         state->cli->transport,
2231                         (uint8_t *)prs_data_p(&state->outgoing_frag),
2232                         prs_offset(&state->outgoing_frag));
2233                 if (tevent_req_nomem(subreq, req)) {
2234                         return;
2235                 }
2236                 tevent_req_set_callback(subreq, rpc_api_pipe_req_write_done,
2237                                         req);
2238         }
2239 }
2240
2241 static void rpc_api_pipe_req_done(struct tevent_req *subreq)
2242 {
2243         struct tevent_req *req = tevent_req_callback_data(
2244                 subreq, struct tevent_req);
2245         struct rpc_api_pipe_req_state *state = tevent_req_data(
2246                 req, struct rpc_api_pipe_req_state);
2247         NTSTATUS status;
2248
2249         status = rpc_api_pipe_recv(subreq, state, &state->reply_pdu);
2250         TALLOC_FREE(subreq);
2251         if (!NT_STATUS_IS_OK(status)) {
2252                 tevent_req_nterror(req, status);
2253                 return;
2254         }
2255         tevent_req_done(req);
2256 }
2257
2258 NTSTATUS rpc_api_pipe_req_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
2259                                prs_struct *reply_pdu)
2260 {
2261         struct rpc_api_pipe_req_state *state = tevent_req_data(
2262                 req, struct rpc_api_pipe_req_state);
2263         NTSTATUS status;
2264
2265         if (tevent_req_is_nterror(req, &status)) {
2266                 /*
2267                  * We always have to initialize to reply pdu, even if there is
2268                  * none. The rpccli_* caller routines expect this.
2269                  */
2270                 prs_init_empty(reply_pdu, mem_ctx, UNMARSHALL);
2271                 return status;
2272         }
2273
2274         *reply_pdu = state->reply_pdu;
2275         reply_pdu->mem_ctx = mem_ctx;
2276
2277         /*
2278          * Prevent state->req_pdu from being freed in
2279          * rpc_api_pipe_req_state_destructor()
2280          */
2281         prs_init_empty(&state->reply_pdu, state, UNMARSHALL);
2282
2283         return NT_STATUS_OK;
2284 }
2285
2286 NTSTATUS rpc_api_pipe_req(TALLOC_CTX *mem_ctx, struct rpc_pipe_client *cli,
2287                         uint8 op_num,
2288                         prs_struct *in_data,
2289                         prs_struct *out_data)
2290 {
2291         TALLOC_CTX *frame = talloc_stackframe();
2292         struct event_context *ev;
2293         struct tevent_req *req;
2294         NTSTATUS status = NT_STATUS_NO_MEMORY;
2295
2296         ev = event_context_init(frame);
2297         if (ev == NULL) {
2298                 goto fail;
2299         }
2300
2301         req = rpc_api_pipe_req_send(frame, ev, cli, op_num, in_data);
2302         if (req == NULL) {
2303                 goto fail;
2304         }
2305
2306         tevent_req_poll(req, ev);
2307
2308         status = rpc_api_pipe_req_recv(req, mem_ctx, out_data);
2309  fail:
2310         TALLOC_FREE(frame);
2311         return status;
2312 }
2313
2314 #if 0
2315 /****************************************************************************
2316  Set the handle state.
2317 ****************************************************************************/
2318
2319 static bool rpc_pipe_set_hnd_state(struct rpc_pipe_client *cli,
2320                                    const char *pipe_name, uint16 device_state)
2321 {
2322         bool state_set = False;
2323         char param[2];
2324         uint16 setup[2]; /* only need 2 uint16 setup parameters */
2325         char *rparam = NULL;
2326         char *rdata = NULL;
2327         uint32 rparam_len, rdata_len;
2328
2329         if (pipe_name == NULL)
2330                 return False;
2331
2332         DEBUG(5,("Set Handle state Pipe[%x]: %s - device state:%x\n",
2333                  cli->fnum, pipe_name, device_state));
2334
2335         /* create parameters: device state */
2336         SSVAL(param, 0, device_state);
2337
2338         /* create setup parameters. */
2339         setup[0] = 0x0001;
2340         setup[1] = cli->fnum; /* pipe file handle.  got this from an SMBOpenX. */
2341
2342         /* send the data on \PIPE\ */
2343         if (cli_api_pipe(cli->cli, "\\PIPE\\",
2344                     setup, 2, 0,                /* setup, length, max */
2345                     param, 2, 0,                /* param, length, max */
2346                     NULL, 0, 1024,              /* data, length, max */
2347                     &rparam, &rparam_len,        /* return param, length */
2348                     &rdata, &rdata_len))         /* return data, length */
2349         {
2350                 DEBUG(5, ("Set Handle state: return OK\n"));
2351                 state_set = True;
2352         }
2353
2354         SAFE_FREE(rparam);
2355         SAFE_FREE(rdata);
2356
2357         return state_set;
2358 }
2359 #endif
2360
2361 /****************************************************************************
2362  Check the rpc bind acknowledge response.
2363 ****************************************************************************/
2364
2365 static bool check_bind_response(RPC_HDR_BA *hdr_ba, const RPC_IFACE *transfer)
2366 {
2367         if ( hdr_ba->addr.len == 0) {
2368                 DEBUG(4,("Ignoring length check -- ASU bug (server didn't fill in the pipe name correctly)"));
2369         }
2370
2371         /* check the transfer syntax */
2372         if ((hdr_ba->transfer.if_version != transfer->if_version) ||
2373              (memcmp(&hdr_ba->transfer.uuid, &transfer->uuid, sizeof(transfer->uuid)) !=0)) {
2374                 DEBUG(2,("bind_rpc_pipe: transfer syntax differs\n"));
2375                 return False;
2376         }
2377
2378         if (hdr_ba->res.num_results != 0x1 || hdr_ba->res.result != 0) {
2379                 DEBUG(2,("bind_rpc_pipe: bind denied results: %d reason: %x\n",
2380                           hdr_ba->res.num_results, hdr_ba->res.reason));
2381         }
2382
2383         DEBUG(5,("check_bind_response: accepted!\n"));
2384         return True;
2385 }
2386
2387 /*******************************************************************
2388  Creates a DCE/RPC bind authentication response.
2389  This is the packet that is sent back to the server once we
2390  have received a BIND-ACK, to finish the third leg of
2391  the authentication handshake.
2392  ********************************************************************/
2393
2394 static NTSTATUS create_rpc_bind_auth3(struct rpc_pipe_client *cli,
2395                                 uint32 rpc_call_id,
2396                                 enum pipe_auth_type auth_type,
2397                                 enum pipe_auth_level auth_level,
2398                                 DATA_BLOB *pauth_blob,
2399                                 prs_struct *rpc_out)
2400 {
2401         RPC_HDR hdr;
2402         RPC_HDR_AUTH hdr_auth;
2403         uint32 pad = 0;
2404
2405         /* Create the request RPC_HDR */
2406         init_rpc_hdr(&hdr, RPC_AUTH3, RPC_FLG_FIRST|RPC_FLG_LAST, rpc_call_id,
2407                      RPC_HEADER_LEN + 4 /* pad */ + RPC_HDR_AUTH_LEN + pauth_blob->length,
2408                      pauth_blob->length );
2409
2410         /* Marshall it. */
2411         if(!smb_io_rpc_hdr("hdr", &hdr, rpc_out, 0)) {
2412                 DEBUG(0,("create_rpc_bind_auth3: failed to marshall RPC_HDR.\n"));
2413                 return NT_STATUS_NO_MEMORY;
2414         }
2415
2416         /*
2417                 I'm puzzled about this - seems to violate the DCE RPC auth rules,
2418                 about padding - shouldn't this pad to length 8 ? JRA.
2419         */
2420
2421         /* 4 bytes padding. */
2422         if (!prs_uint32("pad", rpc_out, 0, &pad)) {
2423                 DEBUG(0,("create_rpc_bind_auth3: failed to marshall 4 byte pad.\n"));
2424                 return NT_STATUS_NO_MEMORY;
2425         }
2426
2427         /* Create the request RPC_HDR_AUTHA */
2428         init_rpc_hdr_auth(&hdr_auth,
2429                         map_pipe_auth_type_to_rpc_auth_type(auth_type),
2430                         auth_level, 0, 1);
2431
2432         if(!smb_io_rpc_hdr_auth("hdr_auth", &hdr_auth, rpc_out, 0)) {
2433                 DEBUG(0,("create_rpc_bind_auth3: failed to marshall RPC_HDR_AUTHA.\n"));
2434                 return NT_STATUS_NO_MEMORY;
2435         }
2436
2437         /*
2438          * Append the auth data to the outgoing buffer.
2439          */
2440
2441         if(!prs_copy_data_in(rpc_out, (char *)pauth_blob->data, pauth_blob->length)) {
2442                 DEBUG(0,("create_rpc_bind_auth3: failed to marshall auth blob.\n"));
2443                 return NT_STATUS_NO_MEMORY;
2444         }
2445
2446         return NT_STATUS_OK;
2447 }
2448
2449 /*******************************************************************
2450  Creates a DCE/RPC bind alter context authentication request which
2451  may contain a spnego auth blobl
2452  ********************************************************************/
2453
2454 static NTSTATUS create_rpc_alter_context(uint32 rpc_call_id,
2455                                         const RPC_IFACE *abstract,
2456                                         const RPC_IFACE *transfer,
2457                                         enum pipe_auth_level auth_level,
2458                                         const DATA_BLOB *pauth_blob, /* spnego auth blob already created. */
2459                                         prs_struct *rpc_out)
2460 {
2461         RPC_HDR_AUTH hdr_auth;
2462         prs_struct auth_info;
2463         NTSTATUS ret = NT_STATUS_OK;
2464
2465         ZERO_STRUCT(hdr_auth);
2466         if (!prs_init(&auth_info, RPC_HDR_AUTH_LEN, prs_get_mem_context(rpc_out), MARSHALL))
2467                 return NT_STATUS_NO_MEMORY;
2468
2469         /* We may change the pad length before marshalling. */
2470         init_rpc_hdr_auth(&hdr_auth, RPC_SPNEGO_AUTH_TYPE, (int)auth_level, 0, 1);
2471
2472         if (pauth_blob->length) {
2473                 if (!prs_copy_data_in(&auth_info, (const char *)pauth_blob->data, pauth_blob->length)) {
2474                         prs_mem_free(&auth_info);
2475                         return NT_STATUS_NO_MEMORY;
2476                 }
2477         }
2478
2479         ret = create_bind_or_alt_ctx_internal(RPC_ALTCONT,
2480                                                 rpc_out,
2481                                                 rpc_call_id,
2482                                                 abstract,
2483                                                 transfer,
2484                                                 &hdr_auth,
2485                                                 &auth_info);
2486         prs_mem_free(&auth_info);
2487         return ret;
2488 }
2489
2490 /****************************************************************************
2491  Do an rpc bind.
2492 ****************************************************************************/
2493
2494 struct rpc_pipe_bind_state {
2495         struct event_context *ev;
2496         struct rpc_pipe_client *cli;
2497         prs_struct rpc_out;
2498         uint32_t rpc_call_id;
2499 };
2500
2501 static int rpc_pipe_bind_state_destructor(struct rpc_pipe_bind_state *state)
2502 {
2503         prs_mem_free(&state->rpc_out);
2504         return 0;
2505 }
2506
2507 static void rpc_pipe_bind_step_one_done(struct tevent_req *subreq);
2508 static NTSTATUS rpc_finish_auth3_bind_send(struct async_req *req,
2509                                            struct rpc_pipe_bind_state *state,
2510                                            struct rpc_hdr_info *phdr,
2511                                            prs_struct *reply_pdu);
2512 static void rpc_bind_auth3_write_done(struct tevent_req *subreq);
2513 static NTSTATUS rpc_finish_spnego_ntlmssp_bind_send(struct async_req *req,
2514                                                     struct rpc_pipe_bind_state *state,
2515                                                     struct rpc_hdr_info *phdr,
2516                                                     prs_struct *reply_pdu);
2517 static void rpc_bind_ntlmssp_api_done(struct tevent_req *subreq);
2518
2519 struct async_req *rpc_pipe_bind_send(TALLOC_CTX *mem_ctx,
2520                                      struct event_context *ev,
2521                                      struct rpc_pipe_client *cli,
2522                                      struct cli_pipe_auth_data *auth)
2523 {
2524         struct async_req *result;
2525         struct tevent_req *subreq;
2526         struct rpc_pipe_bind_state *state;
2527         NTSTATUS status;
2528
2529         if (!async_req_setup(mem_ctx, &result, &state,
2530                              struct rpc_pipe_bind_state)) {
2531                 return NULL;
2532         }
2533
2534         DEBUG(5,("Bind RPC Pipe: %s auth_type %u, auth_level %u\n",
2535                 rpccli_pipe_txt(debug_ctx(), cli),
2536                 (unsigned int)auth->auth_type,
2537                 (unsigned int)auth->auth_level ));
2538
2539         state->ev = ev;
2540         state->cli = cli;
2541         state->rpc_call_id = get_rpc_call_id();
2542
2543         prs_init_empty(&state->rpc_out, state, MARSHALL);
2544         talloc_set_destructor(state, rpc_pipe_bind_state_destructor);
2545
2546         cli->auth = talloc_move(cli, &auth);
2547
2548         /* Marshall the outgoing data. */
2549         status = create_rpc_bind_req(cli, &state->rpc_out,
2550                                      state->rpc_call_id,
2551                                      &cli->abstract_syntax,
2552                                      &cli->transfer_syntax,
2553                                      cli->auth->auth_type,
2554                                      cli->auth->auth_level);
2555
2556         if (!NT_STATUS_IS_OK(status)) {
2557                 goto post_status;
2558         }
2559
2560         subreq = rpc_api_pipe_send(state, ev, cli, &state->rpc_out,
2561                                    RPC_BINDACK);
2562         if (subreq == NULL) {
2563                 goto fail;
2564         }
2565         tevent_req_set_callback(subreq, rpc_pipe_bind_step_one_done, result);
2566         return result;
2567
2568  post_status:
2569         if (async_post_ntstatus(result, ev, status)) {
2570                 return result;
2571         }
2572  fail:
2573         TALLOC_FREE(result);
2574         return NULL;
2575 }
2576
2577 static void rpc_pipe_bind_step_one_done(struct tevent_req *subreq)
2578 {
2579         struct async_req *req = tevent_req_callback_data(
2580                 subreq, struct async_req);
2581         struct rpc_pipe_bind_state *state = talloc_get_type_abort(
2582                 req->private_data, struct rpc_pipe_bind_state);
2583         prs_struct reply_pdu;
2584         struct rpc_hdr_info hdr;
2585         struct rpc_hdr_ba_info hdr_ba;
2586         NTSTATUS status;
2587
2588         status = rpc_api_pipe_recv(subreq, talloc_tos(), &reply_pdu);
2589         TALLOC_FREE(subreq);
2590         if (!NT_STATUS_IS_OK(status)) {
2591                 DEBUG(3, ("rpc_pipe_bind: %s bind request returned %s\n",
2592                           rpccli_pipe_txt(debug_ctx(), state->cli),
2593                           nt_errstr(status)));
2594                 async_req_nterror(req, status);
2595                 return;
2596         }
2597
2598         /* Unmarshall the RPC header */
2599         if (!smb_io_rpc_hdr("hdr", &hdr, &reply_pdu, 0)) {
2600                 DEBUG(0, ("rpc_pipe_bind: failed to unmarshall RPC_HDR.\n"));
2601                 prs_mem_free(&reply_pdu);
2602                 async_req_nterror(req, NT_STATUS_BUFFER_TOO_SMALL);
2603                 return;
2604         }
2605
2606         if (!smb_io_rpc_hdr_ba("", &hdr_ba, &reply_pdu, 0)) {
2607                 DEBUG(0, ("rpc_pipe_bind: Failed to unmarshall "
2608                           "RPC_HDR_BA.\n"));
2609                 prs_mem_free(&reply_pdu);
2610                 async_req_nterror(req, NT_STATUS_BUFFER_TOO_SMALL);
2611                 return;
2612         }
2613
2614         if (!check_bind_response(&hdr_ba, &state->cli->transfer_syntax)) {
2615                 DEBUG(2, ("rpc_pipe_bind: check_bind_response failed.\n"));
2616                 prs_mem_free(&reply_pdu);
2617                 async_req_nterror(req, NT_STATUS_BUFFER_TOO_SMALL);
2618                 return;
2619         }
2620
2621         state->cli->max_xmit_frag = hdr_ba.bba.max_tsize;
2622         state->cli->max_recv_frag = hdr_ba.bba.max_rsize;
2623
2624         /*
2625          * For authenticated binds we may need to do 3 or 4 leg binds.
2626          */
2627
2628         switch(state->cli->auth->auth_type) {
2629
2630         case PIPE_AUTH_TYPE_NONE:
2631         case PIPE_AUTH_TYPE_SCHANNEL:
2632                 /* Bind complete. */
2633                 prs_mem_free(&reply_pdu);
2634                 async_req_done(req);
2635                 break;
2636
2637         case PIPE_AUTH_TYPE_NTLMSSP:
2638                 /* Need to send AUTH3 packet - no reply. */
2639                 status = rpc_finish_auth3_bind_send(req, state, &hdr,
2640                                                     &reply_pdu);
2641                 prs_mem_free(&reply_pdu);
2642                 if (!NT_STATUS_IS_OK(status)) {
2643                         async_req_nterror(req, status);
2644                 }
2645                 break;
2646
2647         case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
2648                 /* Need to send alter context request and reply. */
2649                 status = rpc_finish_spnego_ntlmssp_bind_send(req, state, &hdr,
2650                                                              &reply_pdu);
2651                 prs_mem_free(&reply_pdu);
2652                 if (!NT_STATUS_IS_OK(status)) {
2653                         async_req_nterror(req, status);
2654                 }
2655                 break;
2656
2657         case PIPE_AUTH_TYPE_KRB5:
2658                 /* */
2659
2660         default:
2661                 DEBUG(0,("cli_finish_bind_auth: unknown auth type %u\n",
2662                          (unsigned int)state->cli->auth->auth_type));
2663                 prs_mem_free(&reply_pdu);
2664                 async_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
2665         }
2666 }
2667
2668 static NTSTATUS rpc_finish_auth3_bind_send(struct async_req *req,
2669                                            struct rpc_pipe_bind_state *state,
2670                                            struct rpc_hdr_info *phdr,
2671                                            prs_struct *reply_pdu)
2672 {
2673         DATA_BLOB server_response = data_blob_null;
2674         DATA_BLOB client_reply = data_blob_null;
2675         struct rpc_hdr_auth_info hdr_auth;
2676         struct tevent_req *subreq;
2677         NTSTATUS status;
2678
2679         if ((phdr->auth_len == 0)
2680             || (phdr->frag_len < phdr->auth_len + RPC_HDR_AUTH_LEN)) {
2681                 return NT_STATUS_INVALID_PARAMETER;
2682         }
2683
2684         if (!prs_set_offset(
2685                     reply_pdu,
2686                     phdr->frag_len - phdr->auth_len - RPC_HDR_AUTH_LEN)) {
2687                 return NT_STATUS_INVALID_PARAMETER;
2688         }
2689
2690         if (!smb_io_rpc_hdr_auth("hdr_auth", &hdr_auth, reply_pdu, 0)) {
2691                 return NT_STATUS_INVALID_PARAMETER;
2692         }
2693
2694         /* TODO - check auth_type/auth_level match. */
2695
2696         server_response = data_blob_talloc(talloc_tos(), NULL, phdr->auth_len);
2697         prs_copy_data_out((char *)server_response.data, reply_pdu,
2698                           phdr->auth_len);
2699
2700         status = ntlmssp_update(state->cli->auth->a_u.ntlmssp_state,
2701                                 server_response, &client_reply);
2702
2703         if (!NT_STATUS_IS_OK(status)) {
2704                 DEBUG(0, ("rpc_finish_auth3_bind: NTLMSSP update using server "
2705                           "blob failed: %s.\n", nt_errstr(status)));
2706                 return status;
2707         }
2708
2709         prs_init_empty(&state->rpc_out, talloc_tos(), MARSHALL);
2710
2711         status = create_rpc_bind_auth3(state->cli, state->rpc_call_id,
2712                                        state->cli->auth->auth_type,
2713                                        state->cli->auth->auth_level,
2714                                        &client_reply, &state->rpc_out);
2715         data_blob_free(&client_reply);
2716
2717         if (!NT_STATUS_IS_OK(status)) {
2718                 return status;
2719         }
2720
2721         subreq = rpc_write_send(state, state->ev, state->cli->transport,
2722                                 (uint8_t *)prs_data_p(&state->rpc_out),
2723                                 prs_offset(&state->rpc_out));
2724         if (subreq == NULL) {
2725                 return NT_STATUS_NO_MEMORY;
2726         }
2727         tevent_req_set_callback(subreq, rpc_bind_auth3_write_done, req);
2728         return NT_STATUS_OK;
2729 }
2730
2731 static void rpc_bind_auth3_write_done(struct tevent_req *subreq)
2732 {
2733         struct async_req *req = tevent_req_callback_data(
2734                 subreq, struct async_req);
2735         NTSTATUS status;
2736
2737         status = rpc_write_recv(subreq);
2738         TALLOC_FREE(subreq);
2739         if (!NT_STATUS_IS_OK(status)) {
2740                 async_req_nterror(req, status);
2741                 return;
2742         }
2743         async_req_done(req);
2744 }
2745
2746 static NTSTATUS rpc_finish_spnego_ntlmssp_bind_send(struct async_req *req,
2747                                                     struct rpc_pipe_bind_state *state,
2748                                                     struct rpc_hdr_info *phdr,
2749                                                     prs_struct *reply_pdu)
2750 {
2751         DATA_BLOB server_spnego_response = data_blob_null;
2752         DATA_BLOB server_ntlm_response = data_blob_null;
2753         DATA_BLOB client_reply = data_blob_null;
2754         DATA_BLOB tmp_blob = data_blob_null;
2755         RPC_HDR_AUTH hdr_auth;
2756         struct tevent_req *subreq;
2757         NTSTATUS status;
2758
2759         if ((phdr->auth_len == 0)
2760             || (phdr->frag_len < phdr->auth_len + RPC_HDR_AUTH_LEN)) {
2761                 return NT_STATUS_INVALID_PARAMETER;
2762         }
2763
2764         /* Process the returned NTLMSSP blob first. */
2765         if (!prs_set_offset(
2766                     reply_pdu,
2767                     phdr->frag_len - phdr->auth_len - RPC_HDR_AUTH_LEN)) {
2768                 return NT_STATUS_INVALID_PARAMETER;
2769         }
2770
2771         if (!smb_io_rpc_hdr_auth("hdr_auth", &hdr_auth, reply_pdu, 0)) {
2772                 return NT_STATUS_INVALID_PARAMETER;
2773         }
2774
2775         server_spnego_response = data_blob(NULL, phdr->auth_len);
2776         prs_copy_data_out((char *)server_spnego_response.data,
2777                           reply_pdu, phdr->auth_len);
2778
2779         /*
2780          * The server might give us back two challenges - tmp_blob is for the
2781          * second.
2782          */
2783         if (!spnego_parse_challenge(server_spnego_response,
2784                                     &server_ntlm_response, &tmp_blob)) {
2785                 data_blob_free(&server_spnego_response);
2786                 data_blob_free(&server_ntlm_response);
2787                 data_blob_free(&tmp_blob);
2788                 return NT_STATUS_INVALID_PARAMETER;
2789         }
2790
2791         /* We're finished with the server spnego response and the tmp_blob. */
2792         data_blob_free(&server_spnego_response);
2793         data_blob_free(&tmp_blob);
2794
2795         status = ntlmssp_update(state->cli->auth->a_u.ntlmssp_state,
2796                                 server_ntlm_response, &client_reply);
2797
2798         /* Finished with the server_ntlm response */
2799         data_blob_free(&server_ntlm_response);
2800
2801         if (!NT_STATUS_IS_OK(status)) {
2802                 DEBUG(0, ("rpc_finish_spnego_ntlmssp_bind: NTLMSSP update "
2803                           "using server blob failed.\n"));
2804                 data_blob_free(&client_reply);
2805                 return status;
2806         }
2807
2808         /* SPNEGO wrap the client reply. */
2809         tmp_blob = spnego_gen_auth(client_reply);
2810         data_blob_free(&client_reply);
2811         client_reply = tmp_blob;
2812         tmp_blob = data_blob_null;
2813
2814         /* Now prepare the alter context pdu. */
2815         prs_init_empty(&state->rpc_out, state, MARSHALL);
2816
2817         status = create_rpc_alter_context(state->rpc_call_id,
2818                                           &state->cli->abstract_syntax,
2819                                           &state->cli->transfer_syntax,
2820                                           state->cli->auth->auth_level,
2821                                           &client_reply,
2822                                           &state->rpc_out);
2823         data_blob_free(&client_reply);
2824
2825         if (!NT_STATUS_IS_OK(status)) {
2826                 return status;
2827         }
2828
2829         subreq = rpc_api_pipe_send(state, state->ev, state->cli,
2830                                    &state->rpc_out, RPC_ALTCONTRESP);
2831         if (subreq == NULL) {
2832                 return NT_STATUS_NO_MEMORY;
2833         }
2834         tevent_req_set_callback(subreq, rpc_bind_ntlmssp_api_done, req);
2835         return NT_STATUS_OK;
2836 }
2837
2838 static void rpc_bind_ntlmssp_api_done(struct tevent_req *subreq)
2839 {
2840         struct async_req *req = tevent_req_callback_data(
2841                 subreq, struct async_req);
2842         struct rpc_pipe_bind_state *state = talloc_get_type_abort(
2843                 req->private_data, struct rpc_pipe_bind_state);
2844         DATA_BLOB server_spnego_response = data_blob_null;
2845         DATA_BLOB tmp_blob = data_blob_null;
2846         prs_struct reply_pdu;
2847         struct rpc_hdr_info hdr;
2848         struct rpc_hdr_auth_info hdr_auth;
2849         NTSTATUS status;
2850
2851         status = rpc_api_pipe_recv(subreq, talloc_tos(), &reply_pdu);
2852         TALLOC_FREE(subreq);
2853         if (!NT_STATUS_IS_OK(status)) {
2854                 async_req_nterror(req, status);
2855                 return;
2856         }
2857
2858         /* Get the auth blob from the reply. */
2859         if (!smb_io_rpc_hdr("rpc_hdr   ", &hdr, &reply_pdu, 0)) {
2860                 DEBUG(0, ("rpc_finish_spnego_ntlmssp_bind: Failed to "
2861                           "unmarshall RPC_HDR.\n"));
2862                 async_req_nterror(req, NT_STATUS_BUFFER_TOO_SMALL);
2863                 return;
2864         }
2865
2866         if (!prs_set_offset(
2867                     &reply_pdu,
2868                     hdr.frag_len - hdr.auth_len - RPC_HDR_AUTH_LEN)) {
2869                 async_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
2870                 return;
2871         }
2872
2873         if (!smb_io_rpc_hdr_auth("hdr_auth", &hdr_auth, &reply_pdu, 0)) {
2874                 async_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
2875                 return;
2876         }
2877
2878         server_spnego_response = data_blob(NULL, hdr.auth_len);
2879         prs_copy_data_out((char *)server_spnego_response.data, &reply_pdu,
2880                           hdr.auth_len);
2881
2882         /* Check we got a valid auth response. */
2883         if (!spnego_parse_auth_response(server_spnego_response, NT_STATUS_OK,
2884                                         OID_NTLMSSP, &tmp_blob)) {
2885                 data_blob_free(&server_spnego_response);
2886                 data_blob_free(&tmp_blob);
2887                 async_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
2888                 return;
2889         }
2890
2891         data_blob_free(&server_spnego_response);
2892         data_blob_free(&tmp_blob);
2893
2894         DEBUG(5,("rpc_finish_spnego_ntlmssp_bind: alter context request to "
2895                  "%s.\n", rpccli_pipe_txt(debug_ctx(), state->cli)));
2896         async_req_done(req);
2897 }
2898
2899 NTSTATUS rpc_pipe_bind_recv(struct async_req *req)
2900 {
2901         return async_req_simple_recv_ntstatus(req);
2902 }
2903
2904 NTSTATUS rpc_pipe_bind(struct rpc_pipe_client *cli,
2905                        struct cli_pipe_auth_data *auth)
2906 {
2907         TALLOC_CTX *frame = talloc_stackframe();
2908         struct event_context *ev;
2909         struct async_req *req;
2910         NTSTATUS status = NT_STATUS_NO_MEMORY;
2911
2912         ev = event_context_init(frame);
2913         if (ev == NULL) {
2914                 goto fail;
2915         }
2916
2917         req = rpc_pipe_bind_send(frame, ev, cli, auth);
2918         if (req == NULL) {
2919                 goto fail;
2920         }
2921
2922         while (req->state < ASYNC_REQ_DONE) {
2923                 event_loop_once(ev);
2924         }
2925
2926         status = rpc_pipe_bind_recv(req);
2927  fail:
2928         TALLOC_FREE(frame);
2929         return status;
2930 }
2931
2932 unsigned int rpccli_set_timeout(struct rpc_pipe_client *rpc_cli,
2933                                 unsigned int timeout)
2934 {
2935         struct cli_state *cli = rpc_pipe_np_smb_conn(rpc_cli);
2936
2937         if (cli == NULL) {
2938                 return 0;
2939         }
2940         return cli_set_timeout(cli, timeout);
2941 }
2942
2943 bool rpccli_get_pwd_hash(struct rpc_pipe_client *rpc_cli, uint8_t nt_hash[16])
2944 {
2945         struct cli_state *cli;
2946
2947         if ((rpc_cli->auth->auth_type == PIPE_AUTH_TYPE_NTLMSSP)
2948             || (rpc_cli->auth->auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP)) {
2949                 memcpy(nt_hash, rpc_cli->auth->a_u.ntlmssp_state->nt_hash, 16);
2950                 return true;
2951         }
2952
2953         cli = rpc_pipe_np_smb_conn(rpc_cli);
2954         if (cli == NULL) {
2955                 return false;
2956         }
2957         E_md4hash(cli->password ? cli->password : "", nt_hash);
2958         return true;
2959 }
2960
2961 NTSTATUS rpccli_anon_bind_data(TALLOC_CTX *mem_ctx,
2962                                struct cli_pipe_auth_data **presult)
2963 {
2964         struct cli_pipe_auth_data *result;
2965
2966         result = talloc(mem_ctx, struct cli_pipe_auth_data);
2967         if (result == NULL) {
2968                 return NT_STATUS_NO_MEMORY;
2969         }
2970
2971         result->auth_type = PIPE_AUTH_TYPE_NONE;
2972         result->auth_level = PIPE_AUTH_LEVEL_NONE;
2973
2974         result->user_name = talloc_strdup(result, "");
2975         result->domain = talloc_strdup(result, "");
2976         if ((result->user_name == NULL) || (result->domain == NULL)) {
2977                 TALLOC_FREE(result);
2978                 return NT_STATUS_NO_MEMORY;
2979         }
2980
2981         *presult = result;
2982         return NT_STATUS_OK;
2983 }
2984
2985 static int cli_auth_ntlmssp_data_destructor(struct cli_pipe_auth_data *auth)
2986 {
2987         ntlmssp_end(&auth->a_u.ntlmssp_state);
2988         return 0;
2989 }
2990
2991 NTSTATUS rpccli_ntlmssp_bind_data(TALLOC_CTX *mem_ctx,
2992                                   enum pipe_auth_type auth_type,
2993                                   enum pipe_auth_level auth_level,
2994                                   const char *domain,
2995                                   const char *username,
2996                                   const char *password,
2997                                   struct cli_pipe_auth_data **presult)
2998 {
2999         struct cli_pipe_auth_data *result;
3000         NTSTATUS status;
3001
3002         result = talloc(mem_ctx, struct cli_pipe_auth_data);
3003         if (result == NULL) {
3004                 return NT_STATUS_NO_MEMORY;
3005         }
3006
3007         result->auth_type = auth_type;
3008         result->auth_level = auth_level;
3009
3010         result->user_name = talloc_strdup(result, username);
3011         result->domain = talloc_strdup(result, domain);
3012         if ((result->user_name == NULL) || (result->domain == NULL)) {
3013                 status = NT_STATUS_NO_MEMORY;
3014                 goto fail;
3015         }
3016
3017         status = ntlmssp_client_start(&result->a_u.ntlmssp_state);
3018         if (!NT_STATUS_IS_OK(status)) {
3019                 goto fail;
3020         }
3021
3022         talloc_set_destructor(result, cli_auth_ntlmssp_data_destructor);
3023
3024         status = ntlmssp_set_username(result->a_u.ntlmssp_state, username);
3025         if (!NT_STATUS_IS_OK(status)) {
3026                 goto fail;
3027         }
3028
3029         status = ntlmssp_set_domain(result->a_u.ntlmssp_state, domain);
3030         if (!NT_STATUS_IS_OK(status)) {
3031                 goto fail;
3032         }
3033
3034         status = ntlmssp_set_password(result->a_u.ntlmssp_state, password);
3035         if (!NT_STATUS_IS_OK(status)) {
3036                 goto fail;
3037         }
3038
3039         /*
3040          * Turn off sign+seal to allow selected auth level to turn it back on.
3041          */
3042         result->a_u.ntlmssp_state->neg_flags &=
3043                 ~(NTLMSSP_NEGOTIATE_SIGN | NTLMSSP_NEGOTIATE_SEAL);
3044
3045         if (auth_level == PIPE_AUTH_LEVEL_INTEGRITY) {
3046                 result->a_u.ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
3047         } else if (auth_level == PIPE_AUTH_LEVEL_PRIVACY) {
3048                 result->a_u.ntlmssp_state->neg_flags
3049                         |= NTLMSSP_NEGOTIATE_SEAL | NTLMSSP_NEGOTIATE_SIGN;
3050         }
3051
3052         *presult = result;
3053         return NT_STATUS_OK;
3054
3055  fail:
3056         TALLOC_FREE(result);
3057         return status;
3058 }
3059
3060 NTSTATUS rpccli_schannel_bind_data(TALLOC_CTX *mem_ctx, const char *domain,
3061                                    enum pipe_auth_level auth_level,
3062                                    const uint8_t sess_key[16],
3063                                    struct cli_pipe_auth_data **presult)
3064 {
3065         struct cli_pipe_auth_data *result;
3066
3067         result = talloc(mem_ctx, struct cli_pipe_auth_data);
3068         if (result == NULL) {
3069                 return NT_STATUS_NO_MEMORY;
3070         }
3071
3072         result->auth_type = PIPE_AUTH_TYPE_SCHANNEL;
3073         result->auth_level = auth_level;
3074
3075         result->user_name = talloc_strdup(result, "");
3076         result->domain = talloc_strdup(result, domain);
3077         if ((result->user_name == NULL) || (result->domain == NULL)) {
3078                 goto fail;
3079         }
3080
3081         result->a_u.schannel_auth = talloc(result,
3082                                            struct schannel_auth_struct);
3083         if (result->a_u.schannel_auth == NULL) {
3084                 goto fail;
3085         }
3086
3087         memcpy(result->a_u.schannel_auth->sess_key, sess_key,
3088                sizeof(result->a_u.schannel_auth->sess_key));
3089         result->a_u.schannel_auth->seq_num = 0;
3090
3091         *presult = result;
3092         return NT_STATUS_OK;
3093
3094  fail:
3095         TALLOC_FREE(result);
3096         return NT_STATUS_NO_MEMORY;
3097 }
3098
3099 #ifdef HAVE_KRB5
3100 static int cli_auth_kerberos_data_destructor(struct kerberos_auth_struct *auth)
3101 {
3102         data_blob_free(&auth->session_key);
3103         return 0;
3104 }
3105 #endif
3106
3107 NTSTATUS rpccli_kerberos_bind_data(TALLOC_CTX *mem_ctx,
3108                                    enum pipe_auth_level auth_level,
3109                                    const char *service_princ,
3110                                    const char *username,
3111                                    const char *password,
3112                                    struct cli_pipe_auth_data **presult)
3113 {
3114 #ifdef HAVE_KRB5
3115         struct cli_pipe_auth_data *result;
3116
3117         if ((username != NULL) && (password != NULL)) {
3118                 int ret = kerberos_kinit_password(username, password, 0, NULL);
3119                 if (ret != 0) {
3120                         return NT_STATUS_ACCESS_DENIED;
3121                 }
3122         }
3123
3124         result = talloc(mem_ctx, struct cli_pipe_auth_data);
3125         if (result == NULL) {
3126                 return NT_STATUS_NO_MEMORY;
3127         }
3128
3129         result->auth_type = PIPE_AUTH_TYPE_KRB5;
3130         result->auth_level = auth_level;
3131
3132         /*
3133          * Username / domain need fixing!
3134          */
3135         result->user_name = talloc_strdup(result, "");
3136         result->domain = talloc_strdup(result, "");
3137         if ((result->user_name == NULL) || (result->domain == NULL)) {
3138                 goto fail;
3139         }
3140
3141         result->a_u.kerberos_auth = TALLOC_ZERO_P(
3142                 result, struct kerberos_auth_struct);
3143         if (result->a_u.kerberos_auth == NULL) {
3144                 goto fail;
3145         }
3146         talloc_set_destructor(result->a_u.kerberos_auth,
3147                               cli_auth_kerberos_data_destructor);
3148
3149         result->a_u.kerberos_auth->service_principal = talloc_strdup(
3150                 result, service_princ);
3151         if (result->a_u.kerberos_auth->service_principal == NULL) {
3152                 goto fail;
3153         }
3154
3155         *presult = result;
3156         return NT_STATUS_OK;
3157
3158  fail:
3159         TALLOC_FREE(result);
3160         return NT_STATUS_NO_MEMORY;
3161 #else
3162         return NT_STATUS_NOT_SUPPORTED;
3163 #endif
3164 }
3165
3166 /**
3167  * Create an rpc pipe client struct, connecting to a tcp port.
3168  */
3169 static NTSTATUS rpc_pipe_open_tcp_port(TALLOC_CTX *mem_ctx, const char *host,
3170                                        uint16_t port,
3171                                        const struct ndr_syntax_id *abstract_syntax,
3172                                        struct rpc_pipe_client **presult)
3173 {
3174         struct rpc_pipe_client *result;
3175         struct sockaddr_storage addr;
3176         NTSTATUS status;
3177         int fd;
3178
3179         result = TALLOC_ZERO_P(mem_ctx, struct rpc_pipe_client);
3180         if (result == NULL) {
3181                 return NT_STATUS_NO_MEMORY;
3182         }
3183
3184         result->abstract_syntax = *abstract_syntax;
3185         result->transfer_syntax = ndr_transfer_syntax;
3186         result->dispatch = cli_do_rpc_ndr;
3187
3188         result->desthost = talloc_strdup(result, host);
3189         result->srv_name_slash = talloc_asprintf_strupper_m(
3190                 result, "\\\\%s", result->desthost);
3191         if ((result->desthost == NULL) || (result->srv_name_slash == NULL)) {
3192                 status = NT_STATUS_NO_MEMORY;
3193                 goto fail;
3194         }
3195
3196         result->max_xmit_frag = RPC_MAX_PDU_FRAG_LEN;
3197         result->max_recv_frag = RPC_MAX_PDU_FRAG_LEN;
3198
3199         if (!resolve_name(host, &addr, 0)) {
3200                 status = NT_STATUS_NOT_FOUND;
3201                 goto fail;
3202         }
3203
3204         status = open_socket_out(&addr, port, 60, &fd);
3205         if (!NT_STATUS_IS_OK(status)) {
3206                 goto fail;
3207         }
3208         set_socket_options(fd, lp_socket_options());
3209
3210         status = rpc_transport_sock_init(result, fd, &result->transport);
3211         if (!NT_STATUS_IS_OK(status)) {
3212                 close(fd);
3213                 goto fail;
3214         }
3215
3216         *presult = result;
3217         return NT_STATUS_OK;
3218
3219  fail:
3220         TALLOC_FREE(result);
3221         return status;
3222 }
3223
3224 /**
3225  * Determine the tcp port on which a dcerpc interface is listening
3226  * for the ncacn_ip_tcp transport via the endpoint mapper of the
3227  * target host.
3228  */
3229 static NTSTATUS rpc_pipe_get_tcp_port(const char *host,
3230                                       const struct ndr_syntax_id *abstract_syntax,
3231                                       uint16_t *pport)
3232 {
3233         NTSTATUS status;
3234         struct rpc_pipe_client *epm_pipe = NULL;
3235         struct cli_pipe_auth_data *auth = NULL;
3236         struct dcerpc_binding *map_binding = NULL;
3237         struct dcerpc_binding *res_binding = NULL;
3238         struct epm_twr_t *map_tower = NULL;
3239         struct epm_twr_t *res_towers = NULL;
3240         struct policy_handle *entry_handle = NULL;
3241         uint32_t num_towers = 0;
3242         uint32_t max_towers = 1;
3243         struct epm_twr_p_t towers;
3244         TALLOC_CTX *tmp_ctx = talloc_stackframe();
3245
3246         if (pport == NULL) {
3247                 status = NT_STATUS_INVALID_PARAMETER;
3248                 goto done;
3249         }
3250
3251         /* open the connection to the endpoint mapper */
3252         status = rpc_pipe_open_tcp_port(tmp_ctx, host, 135,
3253                                         &ndr_table_epmapper.syntax_id,
3254                                         &epm_pipe);
3255
3256         if (!NT_STATUS_IS_OK(status)) {
3257                 goto done;
3258         }
3259
3260         status = rpccli_anon_bind_data(tmp_ctx, &auth);
3261         if (!NT_STATUS_IS_OK(status)) {
3262                 goto done;
3263         }
3264
3265         status = rpc_pipe_bind(epm_pipe, auth);
3266         if (!NT_STATUS_IS_OK(status)) {
3267                 goto done;
3268         }
3269
3270         /* create tower for asking the epmapper */
3271
3272         map_binding = TALLOC_ZERO_P(tmp_ctx, struct dcerpc_binding);
3273         if (map_binding == NULL) {
3274                 status = NT_STATUS_NO_MEMORY;
3275                 goto done;
3276         }
3277
3278         map_binding->transport = NCACN_IP_TCP;
3279         map_binding->object = *abstract_syntax;
3280         map_binding->host = host; /* needed? */
3281         map_binding->endpoint = "0"; /* correct? needed? */
3282
3283         map_tower = TALLOC_ZERO_P(tmp_ctx, struct epm_twr_t);
3284         if (map_tower == NULL) {
3285                 status = NT_STATUS_NO_MEMORY;
3286                 goto done;
3287         }
3288
3289         status = dcerpc_binding_build_tower(tmp_ctx, map_binding,
3290                                             &(map_tower->tower));
3291         if (!NT_STATUS_IS_OK(status)) {
3292                 goto done;
3293         }
3294
3295         /* allocate further parameters for the epm_Map call */
3296
3297         res_towers = TALLOC_ARRAY(tmp_ctx, struct epm_twr_t, max_towers);
3298         if (res_towers == NULL) {
3299                 status = NT_STATUS_NO_MEMORY;
3300                 goto done;
3301         }
3302         towers.twr = res_towers;
3303
3304         entry_handle = TALLOC_ZERO_P(tmp_ctx, struct policy_handle);
3305         if (entry_handle == NULL) {
3306                 status = NT_STATUS_NO_MEMORY;
3307                 goto done;
3308         }
3309
3310         /* ask the endpoint mapper for the port */
3311
3312         status = rpccli_epm_Map(epm_pipe,
3313                                 tmp_ctx,
3314                                 CONST_DISCARD(struct GUID *,
3315                                               &(abstract_syntax->uuid)),
3316                                 map_tower,
3317                                 entry_handle,
3318                                 max_towers,
3319                                 &num_towers,
3320                                 &towers);
3321
3322         if (!NT_STATUS_IS_OK(status)) {
3323                 goto done;
3324         }
3325
3326         if (num_towers != 1) {
3327                 status = NT_STATUS_UNSUCCESSFUL;
3328                 goto done;
3329         }
3330
3331         /* extract the port from the answer */
3332
3333         status = dcerpc_binding_from_tower(tmp_ctx,
3334                                            &(towers.twr->tower),
3335                                            &res_binding);
3336         if (!NT_STATUS_IS_OK(status)) {
3337                 goto done;
3338         }
3339
3340         /* are further checks here necessary? */
3341         if (res_binding->transport != NCACN_IP_TCP) {
3342                 status = NT_STATUS_UNSUCCESSFUL;
3343                 goto done;
3344         }
3345
3346         *pport = (uint16_t)atoi(res_binding->endpoint);
3347
3348 done:
3349         TALLOC_FREE(tmp_ctx);
3350         return status;
3351 }
3352
3353 /**
3354  * Create a rpc pipe client struct, connecting to a host via tcp.
3355  * The port is determined by asking the endpoint mapper on the given
3356  * host.
3357  */
3358 NTSTATUS rpc_pipe_open_tcp(TALLOC_CTX *mem_ctx, const char *host,
3359                            const struct ndr_syntax_id *abstract_syntax,
3360                            struct rpc_pipe_client **presult)
3361 {
3362         NTSTATUS status;
3363         uint16_t port = 0;
3364
3365         *presult = NULL;
3366
3367         status = rpc_pipe_get_tcp_port(host, abstract_syntax, &port);
3368         if (!NT_STATUS_IS_OK(status)) {
3369                 goto done;
3370         }
3371
3372         status = rpc_pipe_open_tcp_port(mem_ctx, host, port,
3373                                         abstract_syntax, presult);
3374
3375 done:
3376         return status;
3377 }
3378
3379 /********************************************************************
3380  Create a rpc pipe client struct, connecting to a unix domain socket
3381  ********************************************************************/
3382 NTSTATUS rpc_pipe_open_ncalrpc(TALLOC_CTX *mem_ctx, const char *socket_path,
3383                                const struct ndr_syntax_id *abstract_syntax,
3384                                struct rpc_pipe_client **presult)
3385 {
3386         struct rpc_pipe_client *result;
3387         struct sockaddr_un addr;
3388         NTSTATUS status;
3389         int fd;
3390
3391         result = talloc_zero(mem_ctx, struct rpc_pipe_client);
3392         if (result == NULL) {
3393                 return NT_STATUS_NO_MEMORY;
3394         }
3395
3396         result->abstract_syntax = *abstract_syntax;
3397         result->transfer_syntax = ndr_transfer_syntax;
3398         result->dispatch = cli_do_rpc_ndr;
3399
3400         result->desthost = get_myname(result);
3401         result->srv_name_slash = talloc_asprintf_strupper_m(
3402                 result, "\\\\%s", result->desthost);
3403         if ((result->desthost == NULL) || (result->srv_name_slash == NULL)) {
3404                 status = NT_STATUS_NO_MEMORY;
3405                 goto fail;
3406         }
3407
3408         result->max_xmit_frag = RPC_MAX_PDU_FRAG_LEN;
3409         result->max_recv_frag = RPC_MAX_PDU_FRAG_LEN;
3410
3411         fd = socket(AF_UNIX, SOCK_STREAM, 0);
3412         if (fd == -1) {
3413                 status = map_nt_error_from_unix(errno);
3414                 goto fail;
3415         }
3416
3417         ZERO_STRUCT(addr);
3418         addr.sun_family = AF_UNIX;
3419         strncpy(addr.sun_path, socket_path, sizeof(addr.sun_path));
3420
3421         if (sys_connect(fd, (struct sockaddr *)&addr) == -1) {
3422                 DEBUG(0, ("connect(%s) failed: %s\n", socket_path,
3423                           strerror(errno)));
3424                 close(fd);
3425                 return map_nt_error_from_unix(errno);
3426         }
3427
3428         status = rpc_transport_sock_init(result, fd, &result->transport);
3429         if (!NT_STATUS_IS_OK(status)) {
3430                 close(fd);
3431                 goto fail;
3432         }
3433
3434         *presult = result;
3435         return NT_STATUS_OK;
3436
3437  fail:
3438         TALLOC_FREE(result);
3439         return status;
3440 }
3441
3442 static int rpc_pipe_client_np_destructor(struct rpc_pipe_client *p)
3443 {
3444         struct cli_state *cli;
3445
3446         cli = rpc_pipe_np_smb_conn(p);
3447         if (cli != NULL) {
3448                 DLIST_REMOVE(cli->pipe_list, p);
3449         }
3450         return 0;
3451 }
3452
3453 /****************************************************************************
3454  Open a named pipe over SMB to a remote server.
3455  *
3456  * CAVEAT CALLER OF THIS FUNCTION:
3457  *    The returned rpc_pipe_client saves a copy of the cli_state cli pointer,
3458  *    so be sure that this function is called AFTER any structure (vs pointer)
3459  *    assignment of the cli.  In particular, libsmbclient does structure
3460  *    assignments of cli, which invalidates the data in the returned
3461  *    rpc_pipe_client if this function is called before the structure assignment
3462  *    of cli.
3463  *
3464  ****************************************************************************/
3465
3466 static NTSTATUS rpc_pipe_open_np(struct cli_state *cli,
3467                                  const struct ndr_syntax_id *abstract_syntax,
3468                                  struct rpc_pipe_client **presult)
3469 {
3470         struct rpc_pipe_client *result;
3471         NTSTATUS status;
3472
3473         /* sanity check to protect against crashes */
3474
3475         if ( !cli ) {
3476                 return NT_STATUS_INVALID_HANDLE;
3477         }
3478
3479         result = TALLOC_ZERO_P(NULL, struct rpc_pipe_client);
3480         if (result == NULL) {
3481                 return NT_STATUS_NO_MEMORY;
3482         }
3483
3484         result->abstract_syntax = *abstract_syntax;
3485         result->transfer_syntax = ndr_transfer_syntax;
3486         result->dispatch = cli_do_rpc_ndr;
3487         result->desthost = talloc_strdup(result, cli->desthost);
3488         result->srv_name_slash = talloc_asprintf_strupper_m(
3489                 result, "\\\\%s", result->desthost);
3490
3491         result->max_xmit_frag = RPC_MAX_PDU_FRAG_LEN;
3492         result->max_recv_frag = RPC_MAX_PDU_FRAG_LEN;
3493
3494         if ((result->desthost == NULL) || (result->srv_name_slash == NULL)) {
3495                 TALLOC_FREE(result);
3496                 return NT_STATUS_NO_MEMORY;
3497         }
3498
3499         status = rpc_transport_np_init(result, cli, abstract_syntax,
3500                                        &result->transport);
3501         if (!NT_STATUS_IS_OK(status)) {
3502                 TALLOC_FREE(result);
3503                 return status;
3504         }
3505
3506         DLIST_ADD(cli->pipe_list, result);
3507         talloc_set_destructor(result, rpc_pipe_client_np_destructor);
3508
3509         *presult = result;
3510         return NT_STATUS_OK;
3511 }
3512
3513 NTSTATUS rpc_pipe_open_local(TALLOC_CTX *mem_ctx,
3514                              struct rpc_cli_smbd_conn *conn,
3515                              const struct ndr_syntax_id *syntax,
3516                              struct rpc_pipe_client **presult)
3517 {
3518         struct rpc_pipe_client *result;
3519         struct cli_pipe_auth_data *auth;
3520         NTSTATUS status;
3521
3522         result = talloc(mem_ctx, struct rpc_pipe_client);
3523         if (result == NULL) {
3524                 return NT_STATUS_NO_MEMORY;
3525         }
3526         result->abstract_syntax = *syntax;
3527         result->transfer_syntax = ndr_transfer_syntax;
3528         result->dispatch = cli_do_rpc_ndr;
3529         result->max_xmit_frag = RPC_MAX_PDU_FRAG_LEN;
3530         result->max_recv_frag = RPC_MAX_PDU_FRAG_LEN;
3531
3532         result->desthost = talloc_strdup(result, global_myname());
3533         result->srv_name_slash = talloc_asprintf_strupper_m(
3534                 result, "\\\\%s", global_myname());
3535         if ((result->desthost == NULL) || (result->srv_name_slash == NULL)) {
3536                 TALLOC_FREE(result);
3537                 return NT_STATUS_NO_MEMORY;
3538         }
3539
3540         status = rpc_transport_smbd_init(result, conn, syntax,
3541                                          &result->transport);
3542         if (!NT_STATUS_IS_OK(status)) {
3543                 DEBUG(1, ("rpc_transport_smbd_init failed: %s\n",
3544                           nt_errstr(status)));
3545                 TALLOC_FREE(result);
3546                 return status;
3547         }
3548
3549         status = rpccli_anon_bind_data(result, &auth);
3550         if (!NT_STATUS_IS_OK(status)) {
3551                 DEBUG(1, ("rpccli_anon_bind_data failed: %s\n",
3552                           nt_errstr(status)));
3553                 TALLOC_FREE(result);
3554                 return status;
3555         }
3556
3557         status = rpc_pipe_bind(result, auth);
3558         if (!NT_STATUS_IS_OK(status)) {
3559                 DEBUG(1, ("rpc_pipe_bind failed: %s\n", nt_errstr(status)));
3560                 TALLOC_FREE(result);
3561                 return status;
3562         }
3563
3564         *presult = result;
3565         return NT_STATUS_OK;
3566 }
3567
3568 /****************************************************************************
3569  Open a pipe to a remote server.
3570  ****************************************************************************/
3571
3572 static NTSTATUS cli_rpc_pipe_open(struct cli_state *cli,
3573                                   const struct ndr_syntax_id *interface,
3574                                   struct rpc_pipe_client **presult)
3575 {
3576         if (ndr_syntax_id_equal(interface, &ndr_table_drsuapi.syntax_id)) {
3577                 /*
3578                  * We should have a better way to figure out this drsuapi
3579                  * speciality...
3580                  */
3581                 return rpc_pipe_open_tcp(NULL, cli->desthost, interface,
3582                                          presult);
3583         }
3584
3585         return rpc_pipe_open_np(cli, interface, presult);
3586 }
3587
3588 /****************************************************************************
3589  Open a named pipe to an SMB server and bind anonymously.
3590  ****************************************************************************/
3591
3592 NTSTATUS cli_rpc_pipe_open_noauth(struct cli_state *cli,
3593                                   const struct ndr_syntax_id *interface,
3594                                   struct rpc_pipe_client **presult)
3595 {
3596         struct rpc_pipe_client *result;
3597         struct cli_pipe_auth_data *auth;
3598         NTSTATUS status;
3599
3600         status = cli_rpc_pipe_open(cli, interface, &result);
3601         if (!NT_STATUS_IS_OK(status)) {
3602                 return status;
3603         }
3604
3605         status = rpccli_anon_bind_data(result, &auth);
3606         if (!NT_STATUS_IS_OK(status)) {
3607                 DEBUG(0, ("rpccli_anon_bind_data returned %s\n",
3608                           nt_errstr(status)));
3609                 TALLOC_FREE(result);
3610                 return status;
3611         }
3612
3613         /*
3614          * This is a bit of an abstraction violation due to the fact that an
3615          * anonymous bind on an authenticated SMB inherits the user/domain
3616          * from the enclosing SMB creds
3617          */
3618
3619         TALLOC_FREE(auth->user_name);
3620         TALLOC_FREE(auth->domain);
3621
3622         auth->user_name = talloc_strdup(auth, cli->user_name);
3623         auth->domain = talloc_strdup(auth, cli->domain);
3624         auth->user_session_key = data_blob_talloc(auth,
3625                 cli->user_session_key.data,
3626                 cli->user_session_key.length);
3627
3628         if ((auth->user_name == NULL) || (auth->domain == NULL)) {
3629                 TALLOC_FREE(result);
3630                 return NT_STATUS_NO_MEMORY;
3631         }
3632
3633         status = rpc_pipe_bind(result, auth);
3634         if (!NT_STATUS_IS_OK(status)) {
3635                 int lvl = 0;
3636                 if (ndr_syntax_id_equal(interface,
3637                                         &ndr_table_dssetup.syntax_id)) {
3638                         /* non AD domains just don't have this pipe, avoid
3639                          * level 0 statement in that case - gd */
3640                         lvl = 3;
3641                 }
3642                 DEBUG(lvl, ("cli_rpc_pipe_open_noauth: rpc_pipe_bind for pipe "
3643                             "%s failed with error %s\n",
3644                             get_pipe_name_from_iface(interface),
3645                             nt_errstr(status) ));
3646                 TALLOC_FREE(result);
3647                 return status;
3648         }
3649
3650         DEBUG(10,("cli_rpc_pipe_open_noauth: opened pipe %s to machine "
3651                   "%s and bound anonymously.\n",
3652                   get_pipe_name_from_iface(interface), cli->desthost));
3653
3654         *presult = result;
3655         return NT_STATUS_OK;
3656 }
3657
3658 /****************************************************************************
3659  Open a named pipe to an SMB server and bind using NTLMSSP or SPNEGO NTLMSSP
3660  ****************************************************************************/
3661
3662 static NTSTATUS cli_rpc_pipe_open_ntlmssp_internal(struct cli_state *cli,
3663                                                    const struct ndr_syntax_id *interface,
3664                                                    enum pipe_auth_type auth_type,
3665                                                    enum pipe_auth_level auth_level,
3666                                                    const char *domain,
3667                                                    const char *username,
3668                                                    const char *password,
3669                                                    struct rpc_pipe_client **presult)
3670 {
3671         struct rpc_pipe_client *result;
3672         struct cli_pipe_auth_data *auth;
3673         NTSTATUS status;
3674
3675         status = cli_rpc_pipe_open(cli, interface, &result);
3676         if (!NT_STATUS_IS_OK(status)) {
3677                 return status;
3678         }
3679
3680         status = rpccli_ntlmssp_bind_data(
3681                 result, auth_type, auth_level, domain, username,
3682                 password, &auth);
3683         if (!NT_STATUS_IS_OK(status)) {
3684                 DEBUG(0, ("rpccli_ntlmssp_bind_data returned %s\n",
3685                           nt_errstr(status)));
3686                 goto err;
3687         }
3688
3689         status = rpc_pipe_bind(result, auth);
3690         if (!NT_STATUS_IS_OK(status)) {
3691                 DEBUG(0, ("cli_rpc_pipe_open_ntlmssp_internal: cli_rpc_pipe_bind failed with error %s\n",
3692                         nt_errstr(status) ));
3693                 goto err;
3694         }
3695
3696         DEBUG(10,("cli_rpc_pipe_open_ntlmssp_internal: opened pipe %s to "
3697                 "machine %s and bound NTLMSSP as user %s\\%s.\n",
3698                   get_pipe_name_from_iface(interface), cli->desthost, domain,
3699                   username ));
3700
3701         *presult = result;
3702         return NT_STATUS_OK;
3703
3704   err:
3705
3706         TALLOC_FREE(result);
3707         return status;
3708 }
3709
3710 /****************************************************************************
3711  External interface.
3712  Open a named pipe to an SMB server and bind using NTLMSSP (bind type 10)
3713  ****************************************************************************/
3714
3715 NTSTATUS cli_rpc_pipe_open_ntlmssp(struct cli_state *cli,
3716                                    const struct ndr_syntax_id *interface,
3717                                    enum pipe_auth_level auth_level,
3718                                    const char *domain,
3719                                    const char *username,
3720                                    const char *password,
3721                                    struct rpc_pipe_client **presult)
3722 {
3723         return cli_rpc_pipe_open_ntlmssp_internal(cli,
3724                                                 interface,
3725                                                 PIPE_AUTH_TYPE_NTLMSSP,
3726                                                 auth_level,
3727                                                 domain,
3728                                                 username,
3729                                                 password,
3730                                                 presult);
3731 }
3732
3733 /****************************************************************************
3734  External interface.
3735  Open a named pipe to an SMB server and bind using spnego NTLMSSP (bind type 9)
3736  ****************************************************************************/
3737
3738 NTSTATUS cli_rpc_pipe_open_spnego_ntlmssp(struct cli_state *cli,
3739                                           const struct ndr_syntax_id *interface,
3740                                           enum pipe_auth_level auth_level,
3741                                           const char *domain,
3742                                           const char *username,
3743                                           const char *password,
3744                                           struct rpc_pipe_client **presult)
3745 {
3746         return cli_rpc_pipe_open_ntlmssp_internal(cli,
3747                                                 interface,
3748                                                 PIPE_AUTH_TYPE_SPNEGO_NTLMSSP,
3749                                                 auth_level,
3750                                                 domain,
3751                                                 username,
3752                                                 password,
3753                                                 presult);
3754 }
3755
3756 /****************************************************************************
3757   Get a the schannel session key out of an already opened netlogon pipe.
3758  ****************************************************************************/
3759 static NTSTATUS get_schannel_session_key_common(struct rpc_pipe_client *netlogon_pipe,
3760                                                 struct cli_state *cli,
3761                                                 const char *domain,
3762                                                 uint32 *pneg_flags)
3763 {
3764         uint32 sec_chan_type = 0;
3765         unsigned char machine_pwd[16];
3766         const char *machine_account;
3767         NTSTATUS status;
3768
3769         /* Get the machine account credentials from secrets.tdb. */
3770         if (!get_trust_pw_hash(domain, machine_pwd, &machine_account,
3771                                &sec_chan_type))
3772         {
3773                 DEBUG(0, ("get_schannel_session_key: could not fetch "
3774                         "trust account password for domain '%s'\n",
3775                         domain));
3776                 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
3777         }
3778
3779         status = rpccli_netlogon_setup_creds(netlogon_pipe,
3780                                         cli->desthost, /* server name */
3781                                         domain,        /* domain */
3782                                         global_myname(), /* client name */
3783                                         machine_account, /* machine account name */
3784                                         machine_pwd,
3785                                         sec_chan_type,
3786                                         pneg_flags);
3787
3788         if (!NT_STATUS_IS_OK(status)) {
3789                 DEBUG(3, ("get_schannel_session_key_common: "
3790                           "rpccli_netlogon_setup_creds failed with result %s "
3791                           "to server %s, domain %s, machine account %s.\n",
3792                           nt_errstr(status), cli->desthost, domain,
3793                           machine_account ));
3794                 return status;
3795         }
3796
3797         if (((*pneg_flags) & NETLOGON_NEG_SCHANNEL) == 0) {
3798                 DEBUG(3, ("get_schannel_session_key: Server %s did not offer schannel\n",
3799                         cli->desthost));
3800                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
3801         }
3802
3803         return NT_STATUS_OK;;
3804 }
3805
3806 /****************************************************************************
3807  Open a netlogon pipe and get the schannel session key.
3808  Now exposed to external callers.
3809  ****************************************************************************/
3810
3811
3812 NTSTATUS get_schannel_session_key(struct cli_state *cli,
3813                                   const char *domain,
3814                                   uint32 *pneg_flags,
3815                                   struct rpc_pipe_client **presult)
3816 {
3817         struct rpc_pipe_client *netlogon_pipe = NULL;
3818         NTSTATUS status;
3819
3820         status = cli_rpc_pipe_open_noauth(cli, &ndr_table_netlogon.syntax_id,
3821                                           &netlogon_pipe);
3822         if (!NT_STATUS_IS_OK(status)) {
3823                 return status;
3824         }
3825
3826         status = get_schannel_session_key_common(netlogon_pipe, cli, domain,
3827                                                  pneg_flags);
3828         if (!NT_STATUS_IS_OK(status)) {
3829                 TALLOC_FREE(netlogon_pipe);
3830                 return status;
3831         }
3832
3833         *presult = netlogon_pipe;
3834         return NT_STATUS_OK;
3835 }
3836
3837 /****************************************************************************
3838  External interface.
3839  Open a named pipe to an SMB server and bind using schannel (bind type 68)
3840  using session_key. sign and seal.
3841  ****************************************************************************/
3842
3843 NTSTATUS cli_rpc_pipe_open_schannel_with_key(struct cli_state *cli,
3844                                              const struct ndr_syntax_id *interface,
3845                                              enum pipe_auth_level auth_level,
3846                                              const char *domain,
3847                                              const struct dcinfo *pdc,
3848                                              struct rpc_pipe_client **presult)
3849 {
3850         struct rpc_pipe_client *result;
3851         struct cli_pipe_auth_data *auth;
3852         NTSTATUS status;
3853
3854         status = cli_rpc_pipe_open(cli, interface, &result);
3855         if (!NT_STATUS_IS_OK(status)) {
3856                 return status;
3857         }
3858
3859         status = rpccli_schannel_bind_data(result, domain, auth_level,
3860                                            pdc->sess_key, &auth);
3861         if (!NT_STATUS_IS_OK(status)) {
3862                 DEBUG(0, ("rpccli_schannel_bind_data returned %s\n",
3863                           nt_errstr(status)));
3864                 TALLOC_FREE(result);
3865                 return status;
3866         }
3867
3868         status = rpc_pipe_bind(result, auth);
3869         if (!NT_STATUS_IS_OK(status)) {
3870                 DEBUG(0, ("cli_rpc_pipe_open_schannel_with_key: "
3871                           "cli_rpc_pipe_bind failed with error %s\n",
3872                           nt_errstr(status) ));
3873                 TALLOC_FREE(result);
3874                 return status;
3875         }
3876
3877         /*
3878          * The credentials on a new netlogon pipe are the ones we are passed
3879          * in - copy them over.
3880          */
3881         result->dc = (struct dcinfo *)talloc_memdup(result, pdc, sizeof(*pdc));
3882         if (result->dc == NULL) {
3883                 DEBUG(0, ("talloc failed\n"));
3884                 TALLOC_FREE(result);
3885                 return NT_STATUS_NO_MEMORY;
3886         }
3887
3888         DEBUG(10,("cli_rpc_pipe_open_schannel_with_key: opened pipe %s to machine %s "
3889                   "for domain %s and bound using schannel.\n",
3890                   get_pipe_name_from_iface(interface),
3891                   cli->desthost, domain ));
3892
3893         *presult = result;
3894         return NT_STATUS_OK;
3895 }
3896
3897 /****************************************************************************
3898  Open a named pipe to an SMB server and bind using schannel (bind type 68).
3899  Fetch the session key ourselves using a temporary netlogon pipe. This
3900  version uses an ntlmssp auth bound netlogon pipe to get the key.
3901  ****************************************************************************/
3902
3903 static NTSTATUS get_schannel_session_key_auth_ntlmssp(struct cli_state *cli,
3904                                                       const char *domain,
3905                                                       const char *username,
3906                                                       const char *password,
3907                                                       uint32 *pneg_flags,
3908                                                       struct rpc_pipe_client **presult)
3909 {
3910         struct rpc_pipe_client *netlogon_pipe = NULL;
3911         NTSTATUS status;
3912
3913         status = cli_rpc_pipe_open_spnego_ntlmssp(
3914                 cli, &ndr_table_netlogon.syntax_id, PIPE_AUTH_LEVEL_PRIVACY,
3915                 domain, username, password, &netlogon_pipe);
3916         if (!NT_STATUS_IS_OK(status)) {
3917                 return status;
3918         }
3919
3920         status = get_schannel_session_key_common(netlogon_pipe, cli, domain,
3921                                                  pneg_flags);
3922         if (!NT_STATUS_IS_OK(status)) {
3923                 TALLOC_FREE(netlogon_pipe);
3924                 return status;
3925         }
3926
3927         *presult = netlogon_pipe;
3928         return NT_STATUS_OK;
3929 }
3930
3931 /****************************************************************************
3932  Open a named pipe to an SMB server and bind using schannel (bind type 68).
3933  Fetch the session key ourselves using a temporary netlogon pipe. This version
3934  uses an ntlmssp bind to get the session key.
3935  ****************************************************************************/
3936
3937 NTSTATUS cli_rpc_pipe_open_ntlmssp_auth_schannel(struct cli_state *cli,
3938                                                  const struct ndr_syntax_id *interface,
3939                                                  enum pipe_auth_level auth_level,
3940                                                  const char *domain,
3941                                                  const char *username,
3942                                                  const char *password,
3943                                                  struct rpc_pipe_client **presult)
3944 {
3945         uint32_t neg_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
3946         struct rpc_pipe_client *netlogon_pipe = NULL;
3947         struct rpc_pipe_client *result = NULL;
3948         NTSTATUS status;
3949
3950         status = get_schannel_session_key_auth_ntlmssp(
3951                 cli, domain, username, password, &neg_flags, &netlogon_pipe);
3952         if (!NT_STATUS_IS_OK(status)) {
3953                 DEBUG(0,("cli_rpc_pipe_open_ntlmssp_auth_schannel: failed to get schannel session "
3954                         "key from server %s for domain %s.\n",
3955                         cli->desthost, domain ));
3956                 return status;
3957         }
3958
3959         status = cli_rpc_pipe_open_schannel_with_key(
3960                 cli, interface, auth_level, domain, netlogon_pipe->dc,
3961                 &result);
3962
3963         /* Now we've bound using the session key we can close the netlog pipe. */
3964         TALLOC_FREE(netlogon_pipe);
3965
3966         if (NT_STATUS_IS_OK(status)) {
3967                 *presult = result;
3968         }
3969         return status;
3970 }
3971
3972 /****************************************************************************
3973  Open a named pipe to an SMB server and bind using schannel (bind type 68).
3974  Fetch the session key ourselves using a temporary netlogon pipe.
3975  ****************************************************************************/
3976
3977 NTSTATUS cli_rpc_pipe_open_schannel(struct cli_state *cli,
3978                                     const struct ndr_syntax_id *interface,
3979                                     enum pipe_auth_level auth_level,
3980                                     const char *domain,
3981                                     struct rpc_pipe_client **presult)
3982 {
3983         uint32_t neg_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
3984         struct rpc_pipe_client *netlogon_pipe = NULL;
3985         struct rpc_pipe_client *result = NULL;
3986         NTSTATUS status;
3987
3988         status = get_schannel_session_key(cli, domain, &neg_flags,
3989                                           &netlogon_pipe);
3990         if (!NT_STATUS_IS_OK(status)) {
3991                 DEBUG(0,("cli_rpc_pipe_open_schannel: failed to get schannel session "
3992                         "key from server %s for domain %s.\n",
3993                         cli->desthost, domain ));
3994                 return status;
3995         }
3996
3997         status = cli_rpc_pipe_open_schannel_with_key(
3998                 cli, interface, auth_level, domain, netlogon_pipe->dc,
3999                 &result);
4000
4001         /* Now we've bound using the session key we can close the netlog pipe. */
4002         TALLOC_FREE(netlogon_pipe);
4003
4004         if (NT_STATUS_IS_OK(status)) {
4005                 *presult = result;
4006         }
4007
4008         return NT_STATUS_OK;
4009 }
4010
4011 /****************************************************************************
4012  Open a named pipe to an SMB server and bind using krb5 (bind type 16).
4013  The idea is this can be called with service_princ, username and password all
4014  NULL so long as the caller has a TGT.
4015  ****************************************************************************/
4016
4017 NTSTATUS cli_rpc_pipe_open_krb5(struct cli_state *cli,
4018                                 const struct ndr_syntax_id *interface,
4019                                 enum pipe_auth_level auth_level,
4020                                 const char *service_princ,
4021                                 const char *username,
4022                                 const char *password,
4023                                 struct rpc_pipe_client **presult)
4024 {
4025 #ifdef HAVE_KRB5
4026         struct rpc_pipe_client *result;
4027         struct cli_pipe_auth_data *auth;
4028         NTSTATUS status;
4029
4030         status = cli_rpc_pipe_open(cli, interface, &result);
4031         if (!NT_STATUS_IS_OK(status)) {
4032                 return status;
4033         }
4034
4035         status = rpccli_kerberos_bind_data(result, auth_level, service_princ,
4036                                            username, password, &auth);
4037         if (!NT_STATUS_IS_OK(status)) {
4038                 DEBUG(0, ("rpccli_kerberos_bind_data returned %s\n",
4039                           nt_errstr(status)));
4040                 TALLOC_FREE(result);
4041                 return status;
4042         }
4043
4044         status = rpc_pipe_bind(result, auth);
4045         if (!NT_STATUS_IS_OK(status)) {
4046                 DEBUG(0, ("cli_rpc_pipe_open_krb5: cli_rpc_pipe_bind failed "
4047                           "with error %s\n", nt_errstr(status)));
4048                 TALLOC_FREE(result);
4049                 return status;
4050         }
4051
4052         *presult = result;
4053         return NT_STATUS_OK;
4054 #else
4055         DEBUG(0,("cli_rpc_pipe_open_krb5: kerberos not found at compile time.\n"));
4056         return NT_STATUS_NOT_IMPLEMENTED;
4057 #endif
4058 }
4059
4060 NTSTATUS cli_get_session_key(TALLOC_CTX *mem_ctx,
4061                              struct rpc_pipe_client *cli,
4062                              DATA_BLOB *session_key)
4063 {
4064         if (!session_key || !cli) {
4065                 return NT_STATUS_INVALID_PARAMETER;
4066         }
4067
4068         if (!cli->auth) {
4069                 return NT_STATUS_INVALID_PARAMETER;
4070         }
4071
4072         switch (cli->auth->auth_type) {
4073                 case PIPE_AUTH_TYPE_SCHANNEL:
4074                         *session_key = data_blob_talloc(mem_ctx,
4075                                 cli->auth->a_u.schannel_auth->sess_key, 16);
4076                         break;
4077                 case PIPE_AUTH_TYPE_NTLMSSP:
4078                 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
4079                         *session_key = data_blob_talloc(mem_ctx,
4080                                 cli->auth->a_u.ntlmssp_state->session_key.data,
4081                                 cli->auth->a_u.ntlmssp_state->session_key.length);
4082                         break;
4083                 case PIPE_AUTH_TYPE_KRB5:
4084                 case PIPE_AUTH_TYPE_SPNEGO_KRB5:
4085                         *session_key = data_blob_talloc(mem_ctx,
4086                                 cli->auth->a_u.kerberos_auth->session_key.data,
4087                                 cli->auth->a_u.kerberos_auth->session_key.length);
4088                         break;
4089                 case PIPE_AUTH_TYPE_NONE:
4090                         *session_key = data_blob_talloc(mem_ctx,
4091                                 cli->auth->user_session_key.data,
4092                                 cli->auth->user_session_key.length);
4093                         break;
4094                 default:
4095                         return NT_STATUS_NO_USER_SESSION_KEY;
4096         }
4097
4098         return NT_STATUS_OK;
4099 }