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 tevent_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 tevent_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 tevent_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 tevent_req *req, *subreq;
2525         struct rpc_pipe_bind_state *state;
2526         NTSTATUS status;
2527
2528         req = tevent_req_create(mem_ctx, &state, struct rpc_pipe_bind_state);
2529         if (req == NULL) {
2530                 return NULL;
2531         }
2532
2533         DEBUG(5,("Bind RPC Pipe: %s auth_type %u, auth_level %u\n",
2534                 rpccli_pipe_txt(debug_ctx(), cli),
2535                 (unsigned int)auth->auth_type,
2536                 (unsigned int)auth->auth_level ));
2537
2538         state->ev = ev;
2539         state->cli = cli;
2540         state->rpc_call_id = get_rpc_call_id();
2541
2542         prs_init_empty(&state->rpc_out, state, MARSHALL);
2543         talloc_set_destructor(state, rpc_pipe_bind_state_destructor);
2544
2545         cli->auth = talloc_move(cli, &auth);
2546
2547         /* Marshall the outgoing data. */
2548         status = create_rpc_bind_req(cli, &state->rpc_out,
2549                                      state->rpc_call_id,
2550                                      &cli->abstract_syntax,
2551                                      &cli->transfer_syntax,
2552                                      cli->auth->auth_type,
2553                                      cli->auth->auth_level);
2554
2555         if (!NT_STATUS_IS_OK(status)) {
2556                 goto post_status;
2557         }
2558
2559         subreq = rpc_api_pipe_send(state, ev, cli, &state->rpc_out,
2560                                    RPC_BINDACK);
2561         if (subreq == NULL) {
2562                 goto fail;
2563         }
2564         tevent_req_set_callback(subreq, rpc_pipe_bind_step_one_done, req);
2565         return req;
2566
2567  post_status:
2568         tevent_req_nterror(req, status);
2569         return tevent_req_post(req, ev);
2570  fail:
2571         TALLOC_FREE(req);
2572         return NULL;
2573 }
2574
2575 static void rpc_pipe_bind_step_one_done(struct tevent_req *subreq)
2576 {
2577         struct tevent_req *req = tevent_req_callback_data(
2578                 subreq, struct tevent_req);
2579         struct rpc_pipe_bind_state *state = tevent_req_data(
2580                 req, struct rpc_pipe_bind_state);
2581         prs_struct reply_pdu;
2582         struct rpc_hdr_info hdr;
2583         struct rpc_hdr_ba_info hdr_ba;
2584         NTSTATUS status;
2585
2586         status = rpc_api_pipe_recv(subreq, talloc_tos(), &reply_pdu);
2587         TALLOC_FREE(subreq);
2588         if (!NT_STATUS_IS_OK(status)) {
2589                 DEBUG(3, ("rpc_pipe_bind: %s bind request returned %s\n",
2590                           rpccli_pipe_txt(debug_ctx(), state->cli),
2591                           nt_errstr(status)));
2592                 tevent_req_nterror(req, status);
2593                 return;
2594         }
2595
2596         /* Unmarshall the RPC header */
2597         if (!smb_io_rpc_hdr("hdr", &hdr, &reply_pdu, 0)) {
2598                 DEBUG(0, ("rpc_pipe_bind: failed to unmarshall RPC_HDR.\n"));
2599                 prs_mem_free(&reply_pdu);
2600                 tevent_req_nterror(req, NT_STATUS_BUFFER_TOO_SMALL);
2601                 return;
2602         }
2603
2604         if (!smb_io_rpc_hdr_ba("", &hdr_ba, &reply_pdu, 0)) {
2605                 DEBUG(0, ("rpc_pipe_bind: Failed to unmarshall "
2606                           "RPC_HDR_BA.\n"));
2607                 prs_mem_free(&reply_pdu);
2608                 tevent_req_nterror(req, NT_STATUS_BUFFER_TOO_SMALL);
2609                 return;
2610         }
2611
2612         if (!check_bind_response(&hdr_ba, &state->cli->transfer_syntax)) {
2613                 DEBUG(2, ("rpc_pipe_bind: check_bind_response failed.\n"));
2614                 prs_mem_free(&reply_pdu);
2615                 tevent_req_nterror(req, NT_STATUS_BUFFER_TOO_SMALL);
2616                 return;
2617         }
2618
2619         state->cli->max_xmit_frag = hdr_ba.bba.max_tsize;
2620         state->cli->max_recv_frag = hdr_ba.bba.max_rsize;
2621
2622         /*
2623          * For authenticated binds we may need to do 3 or 4 leg binds.
2624          */
2625
2626         switch(state->cli->auth->auth_type) {
2627
2628         case PIPE_AUTH_TYPE_NONE:
2629         case PIPE_AUTH_TYPE_SCHANNEL:
2630                 /* Bind complete. */
2631                 prs_mem_free(&reply_pdu);
2632                 tevent_req_done(req);
2633                 break;
2634
2635         case PIPE_AUTH_TYPE_NTLMSSP:
2636                 /* Need to send AUTH3 packet - no reply. */
2637                 status = rpc_finish_auth3_bind_send(req, state, &hdr,
2638                                                     &reply_pdu);
2639                 prs_mem_free(&reply_pdu);
2640                 if (!NT_STATUS_IS_OK(status)) {
2641                         tevent_req_nterror(req, status);
2642                 }
2643                 break;
2644
2645         case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
2646                 /* Need to send alter context request and reply. */
2647                 status = rpc_finish_spnego_ntlmssp_bind_send(req, state, &hdr,
2648                                                              &reply_pdu);
2649                 prs_mem_free(&reply_pdu);
2650                 if (!NT_STATUS_IS_OK(status)) {
2651                         tevent_req_nterror(req, status);
2652                 }
2653                 break;
2654
2655         case PIPE_AUTH_TYPE_KRB5:
2656                 /* */
2657
2658         default:
2659                 DEBUG(0,("cli_finish_bind_auth: unknown auth type %u\n",
2660                          (unsigned int)state->cli->auth->auth_type));
2661                 prs_mem_free(&reply_pdu);
2662                 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
2663         }
2664 }
2665
2666 static NTSTATUS rpc_finish_auth3_bind_send(struct tevent_req *req,
2667                                            struct rpc_pipe_bind_state *state,
2668                                            struct rpc_hdr_info *phdr,
2669                                            prs_struct *reply_pdu)
2670 {
2671         DATA_BLOB server_response = data_blob_null;
2672         DATA_BLOB client_reply = data_blob_null;
2673         struct rpc_hdr_auth_info hdr_auth;
2674         struct tevent_req *subreq;
2675         NTSTATUS status;
2676
2677         if ((phdr->auth_len == 0)
2678             || (phdr->frag_len < phdr->auth_len + RPC_HDR_AUTH_LEN)) {
2679                 return NT_STATUS_INVALID_PARAMETER;
2680         }
2681
2682         if (!prs_set_offset(
2683                     reply_pdu,
2684                     phdr->frag_len - phdr->auth_len - RPC_HDR_AUTH_LEN)) {
2685                 return NT_STATUS_INVALID_PARAMETER;
2686         }
2687
2688         if (!smb_io_rpc_hdr_auth("hdr_auth", &hdr_auth, reply_pdu, 0)) {
2689                 return NT_STATUS_INVALID_PARAMETER;
2690         }
2691
2692         /* TODO - check auth_type/auth_level match. */
2693
2694         server_response = data_blob_talloc(talloc_tos(), NULL, phdr->auth_len);
2695         prs_copy_data_out((char *)server_response.data, reply_pdu,
2696                           phdr->auth_len);
2697
2698         status = ntlmssp_update(state->cli->auth->a_u.ntlmssp_state,
2699                                 server_response, &client_reply);
2700
2701         if (!NT_STATUS_IS_OK(status)) {
2702                 DEBUG(0, ("rpc_finish_auth3_bind: NTLMSSP update using server "
2703                           "blob failed: %s.\n", nt_errstr(status)));
2704                 return status;
2705         }
2706
2707         prs_init_empty(&state->rpc_out, talloc_tos(), MARSHALL);
2708
2709         status = create_rpc_bind_auth3(state->cli, state->rpc_call_id,
2710                                        state->cli->auth->auth_type,
2711                                        state->cli->auth->auth_level,
2712                                        &client_reply, &state->rpc_out);
2713         data_blob_free(&client_reply);
2714
2715         if (!NT_STATUS_IS_OK(status)) {
2716                 return status;
2717         }
2718
2719         subreq = rpc_write_send(state, state->ev, state->cli->transport,
2720                                 (uint8_t *)prs_data_p(&state->rpc_out),
2721                                 prs_offset(&state->rpc_out));
2722         if (subreq == NULL) {
2723                 return NT_STATUS_NO_MEMORY;
2724         }
2725         tevent_req_set_callback(subreq, rpc_bind_auth3_write_done, req);
2726         return NT_STATUS_OK;
2727 }
2728
2729 static void rpc_bind_auth3_write_done(struct tevent_req *subreq)
2730 {
2731         struct tevent_req *req = tevent_req_callback_data(
2732                 subreq, struct tevent_req);
2733         NTSTATUS status;
2734
2735         status = rpc_write_recv(subreq);
2736         TALLOC_FREE(subreq);
2737         if (!NT_STATUS_IS_OK(status)) {
2738                 tevent_req_nterror(req, status);
2739                 return;
2740         }
2741         tevent_req_done(req);
2742 }
2743
2744 static NTSTATUS rpc_finish_spnego_ntlmssp_bind_send(struct tevent_req *req,
2745                                                     struct rpc_pipe_bind_state *state,
2746                                                     struct rpc_hdr_info *phdr,
2747                                                     prs_struct *reply_pdu)
2748 {
2749         DATA_BLOB server_spnego_response = data_blob_null;
2750         DATA_BLOB server_ntlm_response = data_blob_null;
2751         DATA_BLOB client_reply = data_blob_null;
2752         DATA_BLOB tmp_blob = data_blob_null;
2753         RPC_HDR_AUTH hdr_auth;
2754         struct tevent_req *subreq;
2755         NTSTATUS status;
2756
2757         if ((phdr->auth_len == 0)
2758             || (phdr->frag_len < phdr->auth_len + RPC_HDR_AUTH_LEN)) {
2759                 return NT_STATUS_INVALID_PARAMETER;
2760         }
2761
2762         /* Process the returned NTLMSSP blob first. */
2763         if (!prs_set_offset(
2764                     reply_pdu,
2765                     phdr->frag_len - phdr->auth_len - RPC_HDR_AUTH_LEN)) {
2766                 return NT_STATUS_INVALID_PARAMETER;
2767         }
2768
2769         if (!smb_io_rpc_hdr_auth("hdr_auth", &hdr_auth, reply_pdu, 0)) {
2770                 return NT_STATUS_INVALID_PARAMETER;
2771         }
2772
2773         server_spnego_response = data_blob(NULL, phdr->auth_len);
2774         prs_copy_data_out((char *)server_spnego_response.data,
2775                           reply_pdu, phdr->auth_len);
2776
2777         /*
2778          * The server might give us back two challenges - tmp_blob is for the
2779          * second.
2780          */
2781         if (!spnego_parse_challenge(server_spnego_response,
2782                                     &server_ntlm_response, &tmp_blob)) {
2783                 data_blob_free(&server_spnego_response);
2784                 data_blob_free(&server_ntlm_response);
2785                 data_blob_free(&tmp_blob);
2786                 return NT_STATUS_INVALID_PARAMETER;
2787         }
2788
2789         /* We're finished with the server spnego response and the tmp_blob. */
2790         data_blob_free(&server_spnego_response);
2791         data_blob_free(&tmp_blob);
2792
2793         status = ntlmssp_update(state->cli->auth->a_u.ntlmssp_state,
2794                                 server_ntlm_response, &client_reply);
2795
2796         /* Finished with the server_ntlm response */
2797         data_blob_free(&server_ntlm_response);
2798
2799         if (!NT_STATUS_IS_OK(status)) {
2800                 DEBUG(0, ("rpc_finish_spnego_ntlmssp_bind: NTLMSSP update "
2801                           "using server blob failed.\n"));
2802                 data_blob_free(&client_reply);
2803                 return status;
2804         }
2805
2806         /* SPNEGO wrap the client reply. */
2807         tmp_blob = spnego_gen_auth(client_reply);
2808         data_blob_free(&client_reply);
2809         client_reply = tmp_blob;
2810         tmp_blob = data_blob_null;
2811
2812         /* Now prepare the alter context pdu. */
2813         prs_init_empty(&state->rpc_out, state, MARSHALL);
2814
2815         status = create_rpc_alter_context(state->rpc_call_id,
2816                                           &state->cli->abstract_syntax,
2817                                           &state->cli->transfer_syntax,
2818                                           state->cli->auth->auth_level,
2819                                           &client_reply,
2820                                           &state->rpc_out);
2821         data_blob_free(&client_reply);
2822
2823         if (!NT_STATUS_IS_OK(status)) {
2824                 return status;
2825         }
2826
2827         subreq = rpc_api_pipe_send(state, state->ev, state->cli,
2828                                    &state->rpc_out, RPC_ALTCONTRESP);
2829         if (subreq == NULL) {
2830                 return NT_STATUS_NO_MEMORY;
2831         }
2832         tevent_req_set_callback(subreq, rpc_bind_ntlmssp_api_done, req);
2833         return NT_STATUS_OK;
2834 }
2835
2836 static void rpc_bind_ntlmssp_api_done(struct tevent_req *subreq)
2837 {
2838         struct tevent_req *req = tevent_req_callback_data(
2839                 subreq, struct tevent_req);
2840         struct rpc_pipe_bind_state *state = tevent_req_data(
2841                 req, struct rpc_pipe_bind_state);
2842         DATA_BLOB server_spnego_response = data_blob_null;
2843         DATA_BLOB tmp_blob = data_blob_null;
2844         prs_struct reply_pdu;
2845         struct rpc_hdr_info hdr;
2846         struct rpc_hdr_auth_info hdr_auth;
2847         NTSTATUS status;
2848
2849         status = rpc_api_pipe_recv(subreq, talloc_tos(), &reply_pdu);
2850         TALLOC_FREE(subreq);
2851         if (!NT_STATUS_IS_OK(status)) {
2852                 tevent_req_nterror(req, status);
2853                 return;
2854         }
2855
2856         /* Get the auth blob from the reply. */
2857         if (!smb_io_rpc_hdr("rpc_hdr   ", &hdr, &reply_pdu, 0)) {
2858                 DEBUG(0, ("rpc_finish_spnego_ntlmssp_bind: Failed to "
2859                           "unmarshall RPC_HDR.\n"));
2860                 tevent_req_nterror(req, NT_STATUS_BUFFER_TOO_SMALL);
2861                 return;
2862         }
2863
2864         if (!prs_set_offset(
2865                     &reply_pdu,
2866                     hdr.frag_len - hdr.auth_len - RPC_HDR_AUTH_LEN)) {
2867                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
2868                 return;
2869         }
2870
2871         if (!smb_io_rpc_hdr_auth("hdr_auth", &hdr_auth, &reply_pdu, 0)) {
2872                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
2873                 return;
2874         }
2875
2876         server_spnego_response = data_blob(NULL, hdr.auth_len);
2877         prs_copy_data_out((char *)server_spnego_response.data, &reply_pdu,
2878                           hdr.auth_len);
2879
2880         /* Check we got a valid auth response. */
2881         if (!spnego_parse_auth_response(server_spnego_response, NT_STATUS_OK,
2882                                         OID_NTLMSSP, &tmp_blob)) {
2883                 data_blob_free(&server_spnego_response);
2884                 data_blob_free(&tmp_blob);
2885                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
2886                 return;
2887         }
2888
2889         data_blob_free(&server_spnego_response);
2890         data_blob_free(&tmp_blob);
2891
2892         DEBUG(5,("rpc_finish_spnego_ntlmssp_bind: alter context request to "
2893                  "%s.\n", rpccli_pipe_txt(debug_ctx(), state->cli)));
2894         tevent_req_done(req);
2895 }
2896
2897 NTSTATUS rpc_pipe_bind_recv(struct tevent_req *req)
2898 {
2899         return tevent_req_simple_recv_ntstatus(req);
2900 }
2901
2902 NTSTATUS rpc_pipe_bind(struct rpc_pipe_client *cli,
2903                        struct cli_pipe_auth_data *auth)
2904 {
2905         TALLOC_CTX *frame = talloc_stackframe();
2906         struct event_context *ev;
2907         struct tevent_req *req;
2908         NTSTATUS status = NT_STATUS_NO_MEMORY;
2909
2910         ev = event_context_init(frame);
2911         if (ev == NULL) {
2912                 goto fail;
2913         }
2914
2915         req = rpc_pipe_bind_send(frame, ev, cli, auth);
2916         if (req == NULL) {
2917                 goto fail;
2918         }
2919
2920         tevent_req_poll(req, ev);
2921
2922         status = rpc_pipe_bind_recv(req);
2923  fail:
2924         TALLOC_FREE(frame);
2925         return status;
2926 }
2927
2928 unsigned int rpccli_set_timeout(struct rpc_pipe_client *rpc_cli,
2929                                 unsigned int timeout)
2930 {
2931         struct cli_state *cli = rpc_pipe_np_smb_conn(rpc_cli);
2932
2933         if (cli == NULL) {
2934                 return 0;
2935         }
2936         return cli_set_timeout(cli, timeout);
2937 }
2938
2939 bool rpccli_get_pwd_hash(struct rpc_pipe_client *rpc_cli, uint8_t nt_hash[16])
2940 {
2941         struct cli_state *cli;
2942
2943         if ((rpc_cli->auth->auth_type == PIPE_AUTH_TYPE_NTLMSSP)
2944             || (rpc_cli->auth->auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP)) {
2945                 memcpy(nt_hash, rpc_cli->auth->a_u.ntlmssp_state->nt_hash, 16);
2946                 return true;
2947         }
2948
2949         cli = rpc_pipe_np_smb_conn(rpc_cli);
2950         if (cli == NULL) {
2951                 return false;
2952         }
2953         E_md4hash(cli->password ? cli->password : "", nt_hash);
2954         return true;
2955 }
2956
2957 NTSTATUS rpccli_anon_bind_data(TALLOC_CTX *mem_ctx,
2958                                struct cli_pipe_auth_data **presult)
2959 {
2960         struct cli_pipe_auth_data *result;
2961
2962         result = talloc(mem_ctx, struct cli_pipe_auth_data);
2963         if (result == NULL) {
2964                 return NT_STATUS_NO_MEMORY;
2965         }
2966
2967         result->auth_type = PIPE_AUTH_TYPE_NONE;
2968         result->auth_level = PIPE_AUTH_LEVEL_NONE;
2969
2970         result->user_name = talloc_strdup(result, "");
2971         result->domain = talloc_strdup(result, "");
2972         if ((result->user_name == NULL) || (result->domain == NULL)) {
2973                 TALLOC_FREE(result);
2974                 return NT_STATUS_NO_MEMORY;
2975         }
2976
2977         *presult = result;
2978         return NT_STATUS_OK;
2979 }
2980
2981 static int cli_auth_ntlmssp_data_destructor(struct cli_pipe_auth_data *auth)
2982 {
2983         ntlmssp_end(&auth->a_u.ntlmssp_state);
2984         return 0;
2985 }
2986
2987 NTSTATUS rpccli_ntlmssp_bind_data(TALLOC_CTX *mem_ctx,
2988                                   enum pipe_auth_type auth_type,
2989                                   enum pipe_auth_level auth_level,
2990                                   const char *domain,
2991                                   const char *username,
2992                                   const char *password,
2993                                   struct cli_pipe_auth_data **presult)
2994 {
2995         struct cli_pipe_auth_data *result;
2996         NTSTATUS status;
2997
2998         result = talloc(mem_ctx, struct cli_pipe_auth_data);
2999         if (result == NULL) {
3000                 return NT_STATUS_NO_MEMORY;
3001         }
3002
3003         result->auth_type = auth_type;
3004         result->auth_level = auth_level;
3005
3006         result->user_name = talloc_strdup(result, username);
3007         result->domain = talloc_strdup(result, domain);
3008         if ((result->user_name == NULL) || (result->domain == NULL)) {
3009                 status = NT_STATUS_NO_MEMORY;
3010                 goto fail;
3011         }
3012
3013         status = ntlmssp_client_start(&result->a_u.ntlmssp_state);
3014         if (!NT_STATUS_IS_OK(status)) {
3015                 goto fail;
3016         }
3017
3018         talloc_set_destructor(result, cli_auth_ntlmssp_data_destructor);
3019
3020         status = ntlmssp_set_username(result->a_u.ntlmssp_state, username);
3021         if (!NT_STATUS_IS_OK(status)) {
3022                 goto fail;
3023         }
3024
3025         status = ntlmssp_set_domain(result->a_u.ntlmssp_state, domain);
3026         if (!NT_STATUS_IS_OK(status)) {
3027                 goto fail;
3028         }
3029
3030         status = ntlmssp_set_password(result->a_u.ntlmssp_state, password);
3031         if (!NT_STATUS_IS_OK(status)) {
3032                 goto fail;
3033         }
3034
3035         /*
3036          * Turn off sign+seal to allow selected auth level to turn it back on.
3037          */
3038         result->a_u.ntlmssp_state->neg_flags &=
3039                 ~(NTLMSSP_NEGOTIATE_SIGN | NTLMSSP_NEGOTIATE_SEAL);
3040
3041         if (auth_level == PIPE_AUTH_LEVEL_INTEGRITY) {
3042                 result->a_u.ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
3043         } else if (auth_level == PIPE_AUTH_LEVEL_PRIVACY) {
3044                 result->a_u.ntlmssp_state->neg_flags
3045                         |= NTLMSSP_NEGOTIATE_SEAL | NTLMSSP_NEGOTIATE_SIGN;
3046         }
3047
3048         *presult = result;
3049         return NT_STATUS_OK;
3050
3051  fail:
3052         TALLOC_FREE(result);
3053         return status;
3054 }
3055
3056 NTSTATUS rpccli_schannel_bind_data(TALLOC_CTX *mem_ctx, const char *domain,
3057                                    enum pipe_auth_level auth_level,
3058                                    const uint8_t sess_key[16],
3059                                    struct cli_pipe_auth_data **presult)
3060 {
3061         struct cli_pipe_auth_data *result;
3062
3063         result = talloc(mem_ctx, struct cli_pipe_auth_data);
3064         if (result == NULL) {
3065                 return NT_STATUS_NO_MEMORY;
3066         }
3067
3068         result->auth_type = PIPE_AUTH_TYPE_SCHANNEL;
3069         result->auth_level = auth_level;
3070
3071         result->user_name = talloc_strdup(result, "");
3072         result->domain = talloc_strdup(result, domain);
3073         if ((result->user_name == NULL) || (result->domain == NULL)) {
3074                 goto fail;
3075         }
3076
3077         result->a_u.schannel_auth = talloc(result,
3078                                            struct schannel_auth_struct);
3079         if (result->a_u.schannel_auth == NULL) {
3080                 goto fail;
3081         }
3082
3083         memcpy(result->a_u.schannel_auth->sess_key, sess_key,
3084                sizeof(result->a_u.schannel_auth->sess_key));
3085         result->a_u.schannel_auth->seq_num = 0;
3086
3087         *presult = result;
3088         return NT_STATUS_OK;
3089
3090  fail:
3091         TALLOC_FREE(result);
3092         return NT_STATUS_NO_MEMORY;
3093 }
3094
3095 #ifdef HAVE_KRB5
3096 static int cli_auth_kerberos_data_destructor(struct kerberos_auth_struct *auth)
3097 {
3098         data_blob_free(&auth->session_key);
3099         return 0;
3100 }
3101 #endif
3102
3103 NTSTATUS rpccli_kerberos_bind_data(TALLOC_CTX *mem_ctx,
3104                                    enum pipe_auth_level auth_level,
3105                                    const char *service_princ,
3106                                    const char *username,
3107                                    const char *password,
3108                                    struct cli_pipe_auth_data **presult)
3109 {
3110 #ifdef HAVE_KRB5
3111         struct cli_pipe_auth_data *result;
3112
3113         if ((username != NULL) && (password != NULL)) {
3114                 int ret = kerberos_kinit_password(username, password, 0, NULL);
3115                 if (ret != 0) {
3116                         return NT_STATUS_ACCESS_DENIED;
3117                 }
3118         }
3119
3120         result = talloc(mem_ctx, struct cli_pipe_auth_data);
3121         if (result == NULL) {
3122                 return NT_STATUS_NO_MEMORY;
3123         }
3124
3125         result->auth_type = PIPE_AUTH_TYPE_KRB5;
3126         result->auth_level = auth_level;
3127
3128         /*
3129          * Username / domain need fixing!
3130          */
3131         result->user_name = talloc_strdup(result, "");
3132         result->domain = talloc_strdup(result, "");
3133         if ((result->user_name == NULL) || (result->domain == NULL)) {
3134                 goto fail;
3135         }
3136
3137         result->a_u.kerberos_auth = TALLOC_ZERO_P(
3138                 result, struct kerberos_auth_struct);
3139         if (result->a_u.kerberos_auth == NULL) {
3140                 goto fail;
3141         }
3142         talloc_set_destructor(result->a_u.kerberos_auth,
3143                               cli_auth_kerberos_data_destructor);
3144
3145         result->a_u.kerberos_auth->service_principal = talloc_strdup(
3146                 result, service_princ);
3147         if (result->a_u.kerberos_auth->service_principal == NULL) {
3148                 goto fail;
3149         }
3150
3151         *presult = result;
3152         return NT_STATUS_OK;
3153
3154  fail:
3155         TALLOC_FREE(result);
3156         return NT_STATUS_NO_MEMORY;
3157 #else
3158         return NT_STATUS_NOT_SUPPORTED;
3159 #endif
3160 }
3161
3162 /**
3163  * Create an rpc pipe client struct, connecting to a tcp port.
3164  */
3165 static NTSTATUS rpc_pipe_open_tcp_port(TALLOC_CTX *mem_ctx, const char *host,
3166                                        uint16_t port,
3167                                        const struct ndr_syntax_id *abstract_syntax,
3168                                        struct rpc_pipe_client **presult)
3169 {
3170         struct rpc_pipe_client *result;
3171         struct sockaddr_storage addr;
3172         NTSTATUS status;
3173         int fd;
3174
3175         result = TALLOC_ZERO_P(mem_ctx, struct rpc_pipe_client);
3176         if (result == NULL) {
3177                 return NT_STATUS_NO_MEMORY;
3178         }
3179
3180         result->abstract_syntax = *abstract_syntax;
3181         result->transfer_syntax = ndr_transfer_syntax;
3182         result->dispatch = cli_do_rpc_ndr;
3183
3184         result->desthost = talloc_strdup(result, host);
3185         result->srv_name_slash = talloc_asprintf_strupper_m(
3186                 result, "\\\\%s", result->desthost);
3187         if ((result->desthost == NULL) || (result->srv_name_slash == NULL)) {
3188                 status = NT_STATUS_NO_MEMORY;
3189                 goto fail;
3190         }
3191
3192         result->max_xmit_frag = RPC_MAX_PDU_FRAG_LEN;
3193         result->max_recv_frag = RPC_MAX_PDU_FRAG_LEN;
3194
3195         if (!resolve_name(host, &addr, 0)) {
3196                 status = NT_STATUS_NOT_FOUND;
3197                 goto fail;
3198         }
3199
3200         status = open_socket_out(&addr, port, 60, &fd);
3201         if (!NT_STATUS_IS_OK(status)) {
3202                 goto fail;
3203         }
3204         set_socket_options(fd, lp_socket_options());
3205
3206         status = rpc_transport_sock_init(result, fd, &result->transport);
3207         if (!NT_STATUS_IS_OK(status)) {
3208                 close(fd);
3209                 goto fail;
3210         }
3211
3212         *presult = result;
3213         return NT_STATUS_OK;
3214
3215  fail:
3216         TALLOC_FREE(result);
3217         return status;
3218 }
3219
3220 /**
3221  * Determine the tcp port on which a dcerpc interface is listening
3222  * for the ncacn_ip_tcp transport via the endpoint mapper of the
3223  * target host.
3224  */
3225 static NTSTATUS rpc_pipe_get_tcp_port(const char *host,
3226                                       const struct ndr_syntax_id *abstract_syntax,
3227                                       uint16_t *pport)
3228 {
3229         NTSTATUS status;
3230         struct rpc_pipe_client *epm_pipe = NULL;
3231         struct cli_pipe_auth_data *auth = NULL;
3232         struct dcerpc_binding *map_binding = NULL;
3233         struct dcerpc_binding *res_binding = NULL;
3234         struct epm_twr_t *map_tower = NULL;
3235         struct epm_twr_t *res_towers = NULL;
3236         struct policy_handle *entry_handle = NULL;
3237         uint32_t num_towers = 0;
3238         uint32_t max_towers = 1;
3239         struct epm_twr_p_t towers;
3240         TALLOC_CTX *tmp_ctx = talloc_stackframe();
3241
3242         if (pport == NULL) {
3243                 status = NT_STATUS_INVALID_PARAMETER;
3244                 goto done;
3245         }
3246
3247         /* open the connection to the endpoint mapper */
3248         status = rpc_pipe_open_tcp_port(tmp_ctx, host, 135,
3249                                         &ndr_table_epmapper.syntax_id,
3250                                         &epm_pipe);
3251
3252         if (!NT_STATUS_IS_OK(status)) {
3253                 goto done;
3254         }
3255
3256         status = rpccli_anon_bind_data(tmp_ctx, &auth);
3257         if (!NT_STATUS_IS_OK(status)) {
3258                 goto done;
3259         }
3260
3261         status = rpc_pipe_bind(epm_pipe, auth);
3262         if (!NT_STATUS_IS_OK(status)) {
3263                 goto done;
3264         }
3265
3266         /* create tower for asking the epmapper */
3267
3268         map_binding = TALLOC_ZERO_P(tmp_ctx, struct dcerpc_binding);
3269         if (map_binding == NULL) {
3270                 status = NT_STATUS_NO_MEMORY;
3271                 goto done;
3272         }
3273
3274         map_binding->transport = NCACN_IP_TCP;
3275         map_binding->object = *abstract_syntax;
3276         map_binding->host = host; /* needed? */
3277         map_binding->endpoint = "0"; /* correct? needed? */
3278
3279         map_tower = TALLOC_ZERO_P(tmp_ctx, struct epm_twr_t);
3280         if (map_tower == NULL) {
3281                 status = NT_STATUS_NO_MEMORY;
3282                 goto done;
3283         }
3284
3285         status = dcerpc_binding_build_tower(tmp_ctx, map_binding,
3286                                             &(map_tower->tower));
3287         if (!NT_STATUS_IS_OK(status)) {
3288                 goto done;
3289         }
3290
3291         /* allocate further parameters for the epm_Map call */
3292
3293         res_towers = TALLOC_ARRAY(tmp_ctx, struct epm_twr_t, max_towers);
3294         if (res_towers == NULL) {
3295                 status = NT_STATUS_NO_MEMORY;
3296                 goto done;
3297         }
3298         towers.twr = res_towers;
3299
3300         entry_handle = TALLOC_ZERO_P(tmp_ctx, struct policy_handle);
3301         if (entry_handle == NULL) {
3302                 status = NT_STATUS_NO_MEMORY;
3303                 goto done;
3304         }
3305
3306         /* ask the endpoint mapper for the port */
3307
3308         status = rpccli_epm_Map(epm_pipe,
3309                                 tmp_ctx,
3310                                 CONST_DISCARD(struct GUID *,
3311                                               &(abstract_syntax->uuid)),
3312                                 map_tower,
3313                                 entry_handle,
3314                                 max_towers,
3315                                 &num_towers,
3316                                 &towers);
3317
3318         if (!NT_STATUS_IS_OK(status)) {
3319                 goto done;
3320         }
3321
3322         if (num_towers != 1) {
3323                 status = NT_STATUS_UNSUCCESSFUL;
3324                 goto done;
3325         }
3326
3327         /* extract the port from the answer */
3328
3329         status = dcerpc_binding_from_tower(tmp_ctx,
3330                                            &(towers.twr->tower),
3331                                            &res_binding);
3332         if (!NT_STATUS_IS_OK(status)) {
3333                 goto done;
3334         }
3335
3336         /* are further checks here necessary? */
3337         if (res_binding->transport != NCACN_IP_TCP) {
3338                 status = NT_STATUS_UNSUCCESSFUL;
3339                 goto done;
3340         }
3341
3342         *pport = (uint16_t)atoi(res_binding->endpoint);
3343
3344 done:
3345         TALLOC_FREE(tmp_ctx);
3346         return status;
3347 }
3348
3349 /**
3350  * Create a rpc pipe client struct, connecting to a host via tcp.
3351  * The port is determined by asking the endpoint mapper on the given
3352  * host.
3353  */
3354 NTSTATUS rpc_pipe_open_tcp(TALLOC_CTX *mem_ctx, const char *host,
3355                            const struct ndr_syntax_id *abstract_syntax,
3356                            struct rpc_pipe_client **presult)
3357 {
3358         NTSTATUS status;
3359         uint16_t port = 0;
3360
3361         *presult = NULL;
3362
3363         status = rpc_pipe_get_tcp_port(host, abstract_syntax, &port);
3364         if (!NT_STATUS_IS_OK(status)) {
3365                 goto done;
3366         }
3367
3368         status = rpc_pipe_open_tcp_port(mem_ctx, host, port,
3369                                         abstract_syntax, presult);
3370
3371 done:
3372         return status;
3373 }
3374
3375 /********************************************************************
3376  Create a rpc pipe client struct, connecting to a unix domain socket
3377  ********************************************************************/
3378 NTSTATUS rpc_pipe_open_ncalrpc(TALLOC_CTX *mem_ctx, const char *socket_path,
3379                                const struct ndr_syntax_id *abstract_syntax,
3380                                struct rpc_pipe_client **presult)
3381 {
3382         struct rpc_pipe_client *result;
3383         struct sockaddr_un addr;
3384         NTSTATUS status;
3385         int fd;
3386
3387         result = talloc_zero(mem_ctx, struct rpc_pipe_client);
3388         if (result == NULL) {
3389                 return NT_STATUS_NO_MEMORY;
3390         }
3391
3392         result->abstract_syntax = *abstract_syntax;
3393         result->transfer_syntax = ndr_transfer_syntax;
3394         result->dispatch = cli_do_rpc_ndr;
3395
3396         result->desthost = get_myname(result);
3397         result->srv_name_slash = talloc_asprintf_strupper_m(
3398                 result, "\\\\%s", result->desthost);
3399         if ((result->desthost == NULL) || (result->srv_name_slash == NULL)) {
3400                 status = NT_STATUS_NO_MEMORY;
3401                 goto fail;
3402         }
3403
3404         result->max_xmit_frag = RPC_MAX_PDU_FRAG_LEN;
3405         result->max_recv_frag = RPC_MAX_PDU_FRAG_LEN;
3406
3407         fd = socket(AF_UNIX, SOCK_STREAM, 0);
3408         if (fd == -1) {
3409                 status = map_nt_error_from_unix(errno);
3410                 goto fail;
3411         }
3412
3413         ZERO_STRUCT(addr);
3414         addr.sun_family = AF_UNIX;
3415         strncpy(addr.sun_path, socket_path, sizeof(addr.sun_path));
3416
3417         if (sys_connect(fd, (struct sockaddr *)&addr) == -1) {
3418                 DEBUG(0, ("connect(%s) failed: %s\n", socket_path,
3419                           strerror(errno)));
3420                 close(fd);
3421                 return map_nt_error_from_unix(errno);
3422         }
3423
3424         status = rpc_transport_sock_init(result, fd, &result->transport);
3425         if (!NT_STATUS_IS_OK(status)) {
3426                 close(fd);
3427                 goto fail;
3428         }
3429
3430         *presult = result;
3431         return NT_STATUS_OK;
3432
3433  fail:
3434         TALLOC_FREE(result);
3435         return status;
3436 }
3437
3438 static int rpc_pipe_client_np_destructor(struct rpc_pipe_client *p)
3439 {
3440         struct cli_state *cli;
3441
3442         cli = rpc_pipe_np_smb_conn(p);
3443         if (cli != NULL) {
3444                 DLIST_REMOVE(cli->pipe_list, p);
3445         }
3446         return 0;
3447 }
3448
3449 /****************************************************************************
3450  Open a named pipe over SMB to a remote server.
3451  *
3452  * CAVEAT CALLER OF THIS FUNCTION:
3453  *    The returned rpc_pipe_client saves a copy of the cli_state cli pointer,
3454  *    so be sure that this function is called AFTER any structure (vs pointer)
3455  *    assignment of the cli.  In particular, libsmbclient does structure
3456  *    assignments of cli, which invalidates the data in the returned
3457  *    rpc_pipe_client if this function is called before the structure assignment
3458  *    of cli.
3459  *
3460  ****************************************************************************/
3461
3462 static NTSTATUS rpc_pipe_open_np(struct cli_state *cli,
3463                                  const struct ndr_syntax_id *abstract_syntax,
3464                                  struct rpc_pipe_client **presult)
3465 {
3466         struct rpc_pipe_client *result;
3467         NTSTATUS status;
3468
3469         /* sanity check to protect against crashes */
3470
3471         if ( !cli ) {
3472                 return NT_STATUS_INVALID_HANDLE;
3473         }
3474
3475         result = TALLOC_ZERO_P(NULL, struct rpc_pipe_client);
3476         if (result == NULL) {
3477                 return NT_STATUS_NO_MEMORY;
3478         }
3479
3480         result->abstract_syntax = *abstract_syntax;
3481         result->transfer_syntax = ndr_transfer_syntax;
3482         result->dispatch = cli_do_rpc_ndr;
3483         result->desthost = talloc_strdup(result, cli->desthost);
3484         result->srv_name_slash = talloc_asprintf_strupper_m(
3485                 result, "\\\\%s", result->desthost);
3486
3487         result->max_xmit_frag = RPC_MAX_PDU_FRAG_LEN;
3488         result->max_recv_frag = RPC_MAX_PDU_FRAG_LEN;
3489
3490         if ((result->desthost == NULL) || (result->srv_name_slash == NULL)) {
3491                 TALLOC_FREE(result);
3492                 return NT_STATUS_NO_MEMORY;
3493         }
3494
3495         status = rpc_transport_np_init(result, cli, abstract_syntax,
3496                                        &result->transport);
3497         if (!NT_STATUS_IS_OK(status)) {
3498                 TALLOC_FREE(result);
3499                 return status;
3500         }
3501
3502         DLIST_ADD(cli->pipe_list, result);
3503         talloc_set_destructor(result, rpc_pipe_client_np_destructor);
3504
3505         *presult = result;
3506         return NT_STATUS_OK;
3507 }
3508
3509 NTSTATUS rpc_pipe_open_local(TALLOC_CTX *mem_ctx,
3510                              struct rpc_cli_smbd_conn *conn,
3511                              const struct ndr_syntax_id *syntax,
3512                              struct rpc_pipe_client **presult)
3513 {
3514         struct rpc_pipe_client *result;
3515         struct cli_pipe_auth_data *auth;
3516         NTSTATUS status;
3517
3518         result = talloc(mem_ctx, struct rpc_pipe_client);
3519         if (result == NULL) {
3520                 return NT_STATUS_NO_MEMORY;
3521         }
3522         result->abstract_syntax = *syntax;
3523         result->transfer_syntax = ndr_transfer_syntax;
3524         result->dispatch = cli_do_rpc_ndr;
3525         result->max_xmit_frag = RPC_MAX_PDU_FRAG_LEN;
3526         result->max_recv_frag = RPC_MAX_PDU_FRAG_LEN;
3527
3528         result->desthost = talloc_strdup(result, global_myname());
3529         result->srv_name_slash = talloc_asprintf_strupper_m(
3530                 result, "\\\\%s", global_myname());
3531         if ((result->desthost == NULL) || (result->srv_name_slash == NULL)) {
3532                 TALLOC_FREE(result);
3533                 return NT_STATUS_NO_MEMORY;
3534         }
3535
3536         status = rpc_transport_smbd_init(result, conn, syntax,
3537                                          &result->transport);
3538         if (!NT_STATUS_IS_OK(status)) {
3539                 DEBUG(1, ("rpc_transport_smbd_init failed: %s\n",
3540                           nt_errstr(status)));
3541                 TALLOC_FREE(result);
3542                 return status;
3543         }
3544
3545         status = rpccli_anon_bind_data(result, &auth);
3546         if (!NT_STATUS_IS_OK(status)) {
3547                 DEBUG(1, ("rpccli_anon_bind_data failed: %s\n",
3548                           nt_errstr(status)));
3549                 TALLOC_FREE(result);
3550                 return status;
3551         }
3552
3553         status = rpc_pipe_bind(result, auth);
3554         if (!NT_STATUS_IS_OK(status)) {
3555                 DEBUG(1, ("rpc_pipe_bind failed: %s\n", nt_errstr(status)));
3556                 TALLOC_FREE(result);
3557                 return status;
3558         }
3559
3560         *presult = result;
3561         return NT_STATUS_OK;
3562 }
3563
3564 /****************************************************************************
3565  Open a pipe to a remote server.
3566  ****************************************************************************/
3567
3568 static NTSTATUS cli_rpc_pipe_open(struct cli_state *cli,
3569                                   const struct ndr_syntax_id *interface,
3570                                   struct rpc_pipe_client **presult)
3571 {
3572         if (ndr_syntax_id_equal(interface, &ndr_table_drsuapi.syntax_id)) {
3573                 /*
3574                  * We should have a better way to figure out this drsuapi
3575                  * speciality...
3576                  */
3577                 return rpc_pipe_open_tcp(NULL, cli->desthost, interface,
3578                                          presult);
3579         }
3580
3581         return rpc_pipe_open_np(cli, interface, presult);
3582 }
3583
3584 /****************************************************************************
3585  Open a named pipe to an SMB server and bind anonymously.
3586  ****************************************************************************/
3587
3588 NTSTATUS cli_rpc_pipe_open_noauth(struct cli_state *cli,
3589                                   const struct ndr_syntax_id *interface,
3590                                   struct rpc_pipe_client **presult)
3591 {
3592         struct rpc_pipe_client *result;
3593         struct cli_pipe_auth_data *auth;
3594         NTSTATUS status;
3595
3596         status = cli_rpc_pipe_open(cli, interface, &result);
3597         if (!NT_STATUS_IS_OK(status)) {
3598                 return status;
3599         }
3600
3601         status = rpccli_anon_bind_data(result, &auth);
3602         if (!NT_STATUS_IS_OK(status)) {
3603                 DEBUG(0, ("rpccli_anon_bind_data returned %s\n",
3604                           nt_errstr(status)));
3605                 TALLOC_FREE(result);
3606                 return status;
3607         }
3608
3609         /*
3610          * This is a bit of an abstraction violation due to the fact that an
3611          * anonymous bind on an authenticated SMB inherits the user/domain
3612          * from the enclosing SMB creds
3613          */
3614
3615         TALLOC_FREE(auth->user_name);
3616         TALLOC_FREE(auth->domain);
3617
3618         auth->user_name = talloc_strdup(auth, cli->user_name);
3619         auth->domain = talloc_strdup(auth, cli->domain);
3620         auth->user_session_key = data_blob_talloc(auth,
3621                 cli->user_session_key.data,
3622                 cli->user_session_key.length);
3623
3624         if ((auth->user_name == NULL) || (auth->domain == NULL)) {
3625                 TALLOC_FREE(result);
3626                 return NT_STATUS_NO_MEMORY;
3627         }
3628
3629         status = rpc_pipe_bind(result, auth);
3630         if (!NT_STATUS_IS_OK(status)) {
3631                 int lvl = 0;
3632                 if (ndr_syntax_id_equal(interface,
3633                                         &ndr_table_dssetup.syntax_id)) {
3634                         /* non AD domains just don't have this pipe, avoid
3635                          * level 0 statement in that case - gd */
3636                         lvl = 3;
3637                 }
3638                 DEBUG(lvl, ("cli_rpc_pipe_open_noauth: rpc_pipe_bind for pipe "
3639                             "%s failed with error %s\n",
3640                             get_pipe_name_from_iface(interface),
3641                             nt_errstr(status) ));
3642                 TALLOC_FREE(result);
3643                 return status;
3644         }
3645
3646         DEBUG(10,("cli_rpc_pipe_open_noauth: opened pipe %s to machine "
3647                   "%s and bound anonymously.\n",
3648                   get_pipe_name_from_iface(interface), cli->desthost));
3649
3650         *presult = result;
3651         return NT_STATUS_OK;
3652 }
3653
3654 /****************************************************************************
3655  Open a named pipe to an SMB server and bind using NTLMSSP or SPNEGO NTLMSSP
3656  ****************************************************************************/
3657
3658 static NTSTATUS cli_rpc_pipe_open_ntlmssp_internal(struct cli_state *cli,
3659                                                    const struct ndr_syntax_id *interface,
3660                                                    enum pipe_auth_type auth_type,
3661                                                    enum pipe_auth_level auth_level,
3662                                                    const char *domain,
3663                                                    const char *username,
3664                                                    const char *password,
3665                                                    struct rpc_pipe_client **presult)
3666 {
3667         struct rpc_pipe_client *result;
3668         struct cli_pipe_auth_data *auth;
3669         NTSTATUS status;
3670
3671         status = cli_rpc_pipe_open(cli, interface, &result);
3672         if (!NT_STATUS_IS_OK(status)) {
3673                 return status;
3674         }
3675
3676         status = rpccli_ntlmssp_bind_data(
3677                 result, auth_type, auth_level, domain, username,
3678                 password, &auth);
3679         if (!NT_STATUS_IS_OK(status)) {
3680                 DEBUG(0, ("rpccli_ntlmssp_bind_data returned %s\n",
3681                           nt_errstr(status)));
3682                 goto err;
3683         }
3684
3685         status = rpc_pipe_bind(result, auth);
3686         if (!NT_STATUS_IS_OK(status)) {
3687                 DEBUG(0, ("cli_rpc_pipe_open_ntlmssp_internal: cli_rpc_pipe_bind failed with error %s\n",
3688                         nt_errstr(status) ));
3689                 goto err;
3690         }
3691
3692         DEBUG(10,("cli_rpc_pipe_open_ntlmssp_internal: opened pipe %s to "
3693                 "machine %s and bound NTLMSSP as user %s\\%s.\n",
3694                   get_pipe_name_from_iface(interface), cli->desthost, domain,
3695                   username ));
3696
3697         *presult = result;
3698         return NT_STATUS_OK;
3699
3700   err:
3701
3702         TALLOC_FREE(result);
3703         return status;
3704 }
3705
3706 /****************************************************************************
3707  External interface.
3708  Open a named pipe to an SMB server and bind using NTLMSSP (bind type 10)
3709  ****************************************************************************/
3710
3711 NTSTATUS cli_rpc_pipe_open_ntlmssp(struct cli_state *cli,
3712                                    const struct ndr_syntax_id *interface,
3713                                    enum pipe_auth_level auth_level,
3714                                    const char *domain,
3715                                    const char *username,
3716                                    const char *password,
3717                                    struct rpc_pipe_client **presult)
3718 {
3719         return cli_rpc_pipe_open_ntlmssp_internal(cli,
3720                                                 interface,
3721                                                 PIPE_AUTH_TYPE_NTLMSSP,
3722                                                 auth_level,
3723                                                 domain,
3724                                                 username,
3725                                                 password,
3726                                                 presult);
3727 }
3728
3729 /****************************************************************************
3730  External interface.
3731  Open a named pipe to an SMB server and bind using spnego NTLMSSP (bind type 9)
3732  ****************************************************************************/
3733
3734 NTSTATUS cli_rpc_pipe_open_spnego_ntlmssp(struct cli_state *cli,
3735                                           const struct ndr_syntax_id *interface,
3736                                           enum pipe_auth_level auth_level,
3737                                           const char *domain,
3738                                           const char *username,
3739                                           const char *password,
3740                                           struct rpc_pipe_client **presult)
3741 {
3742         return cli_rpc_pipe_open_ntlmssp_internal(cli,
3743                                                 interface,
3744                                                 PIPE_AUTH_TYPE_SPNEGO_NTLMSSP,
3745                                                 auth_level,
3746                                                 domain,
3747                                                 username,
3748                                                 password,
3749                                                 presult);
3750 }
3751
3752 /****************************************************************************
3753   Get a the schannel session key out of an already opened netlogon pipe.
3754  ****************************************************************************/
3755 static NTSTATUS get_schannel_session_key_common(struct rpc_pipe_client *netlogon_pipe,
3756                                                 struct cli_state *cli,
3757                                                 const char *domain,
3758                                                 uint32 *pneg_flags)
3759 {
3760         uint32 sec_chan_type = 0;
3761         unsigned char machine_pwd[16];
3762         const char *machine_account;
3763         NTSTATUS status;
3764
3765         /* Get the machine account credentials from secrets.tdb. */
3766         if (!get_trust_pw_hash(domain, machine_pwd, &machine_account,
3767                                &sec_chan_type))
3768         {
3769                 DEBUG(0, ("get_schannel_session_key: could not fetch "
3770                         "trust account password for domain '%s'\n",
3771                         domain));
3772                 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
3773         }
3774
3775         status = rpccli_netlogon_setup_creds(netlogon_pipe,
3776                                         cli->desthost, /* server name */
3777                                         domain,        /* domain */
3778                                         global_myname(), /* client name */
3779                                         machine_account, /* machine account name */
3780                                         machine_pwd,
3781                                         sec_chan_type,
3782                                         pneg_flags);
3783
3784         if (!NT_STATUS_IS_OK(status)) {
3785                 DEBUG(3, ("get_schannel_session_key_common: "
3786                           "rpccli_netlogon_setup_creds failed with result %s "
3787                           "to server %s, domain %s, machine account %s.\n",
3788                           nt_errstr(status), cli->desthost, domain,
3789                           machine_account ));
3790                 return status;
3791         }
3792
3793         if (((*pneg_flags) & NETLOGON_NEG_SCHANNEL) == 0) {
3794                 DEBUG(3, ("get_schannel_session_key: Server %s did not offer schannel\n",
3795                         cli->desthost));
3796                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
3797         }
3798
3799         return NT_STATUS_OK;;
3800 }
3801
3802 /****************************************************************************
3803  Open a netlogon pipe and get the schannel session key.
3804  Now exposed to external callers.
3805  ****************************************************************************/
3806
3807
3808 NTSTATUS get_schannel_session_key(struct cli_state *cli,
3809                                   const char *domain,
3810                                   uint32 *pneg_flags,
3811                                   struct rpc_pipe_client **presult)
3812 {
3813         struct rpc_pipe_client *netlogon_pipe = NULL;
3814         NTSTATUS status;
3815
3816         status = cli_rpc_pipe_open_noauth(cli, &ndr_table_netlogon.syntax_id,
3817                                           &netlogon_pipe);
3818         if (!NT_STATUS_IS_OK(status)) {
3819                 return status;
3820         }
3821
3822         status = get_schannel_session_key_common(netlogon_pipe, cli, domain,
3823                                                  pneg_flags);
3824         if (!NT_STATUS_IS_OK(status)) {
3825                 TALLOC_FREE(netlogon_pipe);
3826                 return status;
3827         }
3828
3829         *presult = netlogon_pipe;
3830         return NT_STATUS_OK;
3831 }
3832
3833 /****************************************************************************
3834  External interface.
3835  Open a named pipe to an SMB server and bind using schannel (bind type 68)
3836  using session_key. sign and seal.
3837  ****************************************************************************/
3838
3839 NTSTATUS cli_rpc_pipe_open_schannel_with_key(struct cli_state *cli,
3840                                              const struct ndr_syntax_id *interface,
3841                                              enum pipe_auth_level auth_level,
3842                                              const char *domain,
3843                                              const struct dcinfo *pdc,
3844                                              struct rpc_pipe_client **presult)
3845 {
3846         struct rpc_pipe_client *result;
3847         struct cli_pipe_auth_data *auth;
3848         NTSTATUS status;
3849
3850         status = cli_rpc_pipe_open(cli, interface, &result);
3851         if (!NT_STATUS_IS_OK(status)) {
3852                 return status;
3853         }
3854
3855         status = rpccli_schannel_bind_data(result, domain, auth_level,
3856                                            pdc->sess_key, &auth);
3857         if (!NT_STATUS_IS_OK(status)) {
3858                 DEBUG(0, ("rpccli_schannel_bind_data returned %s\n",
3859                           nt_errstr(status)));
3860                 TALLOC_FREE(result);
3861                 return status;
3862         }
3863
3864         status = rpc_pipe_bind(result, auth);
3865         if (!NT_STATUS_IS_OK(status)) {
3866                 DEBUG(0, ("cli_rpc_pipe_open_schannel_with_key: "
3867                           "cli_rpc_pipe_bind failed with error %s\n",
3868                           nt_errstr(status) ));
3869                 TALLOC_FREE(result);
3870                 return status;
3871         }
3872
3873         /*
3874          * The credentials on a new netlogon pipe are the ones we are passed
3875          * in - copy them over.
3876          */
3877         result->dc = (struct dcinfo *)talloc_memdup(result, pdc, sizeof(*pdc));
3878         if (result->dc == NULL) {
3879                 DEBUG(0, ("talloc failed\n"));
3880                 TALLOC_FREE(result);
3881                 return NT_STATUS_NO_MEMORY;
3882         }
3883
3884         DEBUG(10,("cli_rpc_pipe_open_schannel_with_key: opened pipe %s to machine %s "
3885                   "for domain %s and bound using schannel.\n",
3886                   get_pipe_name_from_iface(interface),
3887                   cli->desthost, domain ));
3888
3889         *presult = result;
3890         return NT_STATUS_OK;
3891 }
3892
3893 /****************************************************************************
3894  Open a named pipe to an SMB server and bind using schannel (bind type 68).
3895  Fetch the session key ourselves using a temporary netlogon pipe. This
3896  version uses an ntlmssp auth bound netlogon pipe to get the key.
3897  ****************************************************************************/
3898
3899 static NTSTATUS get_schannel_session_key_auth_ntlmssp(struct cli_state *cli,
3900                                                       const char *domain,
3901                                                       const char *username,
3902                                                       const char *password,
3903                                                       uint32 *pneg_flags,
3904                                                       struct rpc_pipe_client **presult)
3905 {
3906         struct rpc_pipe_client *netlogon_pipe = NULL;
3907         NTSTATUS status;
3908
3909         status = cli_rpc_pipe_open_spnego_ntlmssp(
3910                 cli, &ndr_table_netlogon.syntax_id, PIPE_AUTH_LEVEL_PRIVACY,
3911                 domain, username, password, &netlogon_pipe);
3912         if (!NT_STATUS_IS_OK(status)) {
3913                 return status;
3914         }
3915
3916         status = get_schannel_session_key_common(netlogon_pipe, cli, domain,
3917                                                  pneg_flags);
3918         if (!NT_STATUS_IS_OK(status)) {
3919                 TALLOC_FREE(netlogon_pipe);
3920                 return status;
3921         }
3922
3923         *presult = netlogon_pipe;
3924         return NT_STATUS_OK;
3925 }
3926
3927 /****************************************************************************
3928  Open a named pipe to an SMB server and bind using schannel (bind type 68).
3929  Fetch the session key ourselves using a temporary netlogon pipe. This version
3930  uses an ntlmssp bind to get the session key.
3931  ****************************************************************************/
3932
3933 NTSTATUS cli_rpc_pipe_open_ntlmssp_auth_schannel(struct cli_state *cli,
3934                                                  const struct ndr_syntax_id *interface,
3935                                                  enum pipe_auth_level auth_level,
3936                                                  const char *domain,
3937                                                  const char *username,
3938                                                  const char *password,
3939                                                  struct rpc_pipe_client **presult)
3940 {
3941         uint32_t neg_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
3942         struct rpc_pipe_client *netlogon_pipe = NULL;
3943         struct rpc_pipe_client *result = NULL;
3944         NTSTATUS status;
3945
3946         status = get_schannel_session_key_auth_ntlmssp(
3947                 cli, domain, username, password, &neg_flags, &netlogon_pipe);
3948         if (!NT_STATUS_IS_OK(status)) {
3949                 DEBUG(0,("cli_rpc_pipe_open_ntlmssp_auth_schannel: failed to get schannel session "
3950                         "key from server %s for domain %s.\n",
3951                         cli->desthost, domain ));
3952                 return status;
3953         }
3954
3955         status = cli_rpc_pipe_open_schannel_with_key(
3956                 cli, interface, auth_level, domain, netlogon_pipe->dc,
3957                 &result);
3958
3959         /* Now we've bound using the session key we can close the netlog pipe. */
3960         TALLOC_FREE(netlogon_pipe);
3961
3962         if (NT_STATUS_IS_OK(status)) {
3963                 *presult = result;
3964         }
3965         return status;
3966 }
3967
3968 /****************************************************************************
3969  Open a named pipe to an SMB server and bind using schannel (bind type 68).
3970  Fetch the session key ourselves using a temporary netlogon pipe.
3971  ****************************************************************************/
3972
3973 NTSTATUS cli_rpc_pipe_open_schannel(struct cli_state *cli,
3974                                     const struct ndr_syntax_id *interface,
3975                                     enum pipe_auth_level auth_level,
3976                                     const char *domain,
3977                                     struct rpc_pipe_client **presult)
3978 {
3979         uint32_t neg_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
3980         struct rpc_pipe_client *netlogon_pipe = NULL;
3981         struct rpc_pipe_client *result = NULL;
3982         NTSTATUS status;
3983
3984         status = get_schannel_session_key(cli, domain, &neg_flags,
3985                                           &netlogon_pipe);
3986         if (!NT_STATUS_IS_OK(status)) {
3987                 DEBUG(0,("cli_rpc_pipe_open_schannel: failed to get schannel session "
3988                         "key from server %s for domain %s.\n",
3989                         cli->desthost, domain ));
3990                 return status;
3991         }
3992
3993         status = cli_rpc_pipe_open_schannel_with_key(
3994                 cli, interface, auth_level, domain, netlogon_pipe->dc,
3995                 &result);
3996
3997         /* Now we've bound using the session key we can close the netlog pipe. */
3998         TALLOC_FREE(netlogon_pipe);
3999
4000         if (NT_STATUS_IS_OK(status)) {
4001                 *presult = result;
4002         }
4003
4004         return NT_STATUS_OK;
4005 }
4006
4007 /****************************************************************************
4008  Open a named pipe to an SMB server and bind using krb5 (bind type 16).
4009  The idea is this can be called with service_princ, username and password all
4010  NULL so long as the caller has a TGT.
4011  ****************************************************************************/
4012
4013 NTSTATUS cli_rpc_pipe_open_krb5(struct cli_state *cli,
4014                                 const struct ndr_syntax_id *interface,
4015                                 enum pipe_auth_level auth_level,
4016                                 const char *service_princ,
4017                                 const char *username,
4018                                 const char *password,
4019                                 struct rpc_pipe_client **presult)
4020 {
4021 #ifdef HAVE_KRB5
4022         struct rpc_pipe_client *result;
4023         struct cli_pipe_auth_data *auth;
4024         NTSTATUS status;
4025
4026         status = cli_rpc_pipe_open(cli, interface, &result);
4027         if (!NT_STATUS_IS_OK(status)) {
4028                 return status;
4029         }
4030
4031         status = rpccli_kerberos_bind_data(result, auth_level, service_princ,
4032                                            username, password, &auth);
4033         if (!NT_STATUS_IS_OK(status)) {
4034                 DEBUG(0, ("rpccli_kerberos_bind_data returned %s\n",
4035                           nt_errstr(status)));
4036                 TALLOC_FREE(result);
4037                 return status;
4038         }
4039
4040         status = rpc_pipe_bind(result, auth);
4041         if (!NT_STATUS_IS_OK(status)) {
4042                 DEBUG(0, ("cli_rpc_pipe_open_krb5: cli_rpc_pipe_bind failed "
4043                           "with error %s\n", nt_errstr(status)));
4044                 TALLOC_FREE(result);
4045                 return status;
4046         }
4047
4048         *presult = result;
4049         return NT_STATUS_OK;
4050 #else
4051         DEBUG(0,("cli_rpc_pipe_open_krb5: kerberos not found at compile time.\n"));
4052         return NT_STATUS_NOT_IMPLEMENTED;
4053 #endif
4054 }
4055
4056 NTSTATUS cli_get_session_key(TALLOC_CTX *mem_ctx,
4057                              struct rpc_pipe_client *cli,
4058                              DATA_BLOB *session_key)
4059 {
4060         if (!session_key || !cli) {
4061                 return NT_STATUS_INVALID_PARAMETER;
4062         }
4063
4064         if (!cli->auth) {
4065                 return NT_STATUS_INVALID_PARAMETER;
4066         }
4067
4068         switch (cli->auth->auth_type) {
4069                 case PIPE_AUTH_TYPE_SCHANNEL:
4070                         *session_key = data_blob_talloc(mem_ctx,
4071                                 cli->auth->a_u.schannel_auth->sess_key, 16);
4072                         break;
4073                 case PIPE_AUTH_TYPE_NTLMSSP:
4074                 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
4075                         *session_key = data_blob_talloc(mem_ctx,
4076                                 cli->auth->a_u.ntlmssp_state->session_key.data,
4077                                 cli->auth->a_u.ntlmssp_state->session_key.length);
4078                         break;
4079                 case PIPE_AUTH_TYPE_KRB5:
4080                 case PIPE_AUTH_TYPE_SPNEGO_KRB5:
4081                         *session_key = data_blob_talloc(mem_ctx,
4082                                 cli->auth->a_u.kerberos_auth->session_key.data,
4083                                 cli->auth->a_u.kerberos_auth->session_key.length);
4084                         break;
4085                 case PIPE_AUTH_TYPE_NONE:
4086                         *session_key = data_blob_talloc(mem_ctx,
4087                                 cli->auth->user_session_key.data,
4088                                 cli->auth->user_session_key.length);
4089                         break;
4090                 default:
4091                         return NT_STATUS_NO_USER_SESSION_KEY;
4092         }
4093
4094         return NT_STATUS_OK;
4095 }