source3/libsmb/cliconnect.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    client connect/disconnect routines
   4    Copyright (C) Andrew Tridgell 1994-1998
   5    Copyright (C) Andrew Bartlett 2001-2003
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "includes.h"
  22
  23 static const struct {
  24         int prot;
  25         const char name[24];
  26 } prots[10] = {
  27         {PROTOCOL_CORE,         "PC NETWORK PROGRAM 1.0"},
  28         {PROTOCOL_COREPLUS,     "MICROSOFT NETWORKS 1.03"},
  29         {PROTOCOL_LANMAN1,      "MICROSOFT NETWORKS 3.0"},
  30         {PROTOCOL_LANMAN1,      "LANMAN1.0"},
  31         {PROTOCOL_LANMAN2,      "LM1.2X002"},
  32         {PROTOCOL_LANMAN2,      "DOS LANMAN2.1"},
  33         {PROTOCOL_LANMAN2,      "LANMAN2.1"},
  34         {PROTOCOL_LANMAN2,      "Samba"},
  35         {PROTOCOL_NT1,          "NT LANMAN 1.0"},
  36         {PROTOCOL_NT1,          "NT LM 0.12"},
  37 };
  38
  39 #define STAR_SMBSERVER "*SMBSERVER"
  40
  41 /**
  42  * Set the user session key for a connection
  43  * @param cli The cli structure to add it too
  44  * @param session_key The session key used.  (A copy of this is taken for the cli struct)
  45  *
  46  */
  47
  48 static void cli_set_session_key (struct cli_state *cli, const DATA_BLOB session_key)
  49 {
  50         cli->user_session_key = data_blob(session_key.data, session_key.length);
  51 }
  52
  53 /****************************************************************************
  54  Do an old lanman2 style session setup.
  55 ****************************************************************************/
  56
  57 static NTSTATUS cli_session_setup_lanman2(struct cli_state *cli,
  58                                           const char *user,
  59                                           const char *pass, size_t passlen,
  60                                           const char *workgroup)
  61 {
  62         DATA_BLOB session_key = data_blob_null;
  63         DATA_BLOB lm_response = data_blob_null;
  64         fstring pword;
  65         char *p;
  66
  67         if (passlen > sizeof(pword)-1) {
  68                 return NT_STATUS_INVALID_PARAMETER;
  69         }
  70
  71         /* LANMAN servers predate NT status codes and Unicode and ignore those
  72            smb flags so we must disable the corresponding default capabilities
  73            that would otherwise cause the Unicode and NT Status flags to be
  74            set (and even returned by the server) */
  75
  76         cli->capabilities &= ~(CAP_UNICODE | CAP_STATUS32);
  77
  78         /* if in share level security then don't send a password now */
  79         if (!(cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL))
  80                 passlen = 0;
  81
  82         if (passlen > 0 && (cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && passlen != 24) {
  83                 /* Encrypted mode needed, and non encrypted password supplied. */
  84                 lm_response = data_blob(NULL, 24);
  85                 if (!SMBencrypt(pass, cli->secblob.data,(uchar *)lm_response.data)) {
  86                         DEBUG(1, ("Password is > 14 chars in length, and is therefore incompatible with Lanman authentication\n"));
  87                         return NT_STATUS_ACCESS_DENIED;
  88                 }
  89         } else if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && passlen == 24) {
  90                 /* Encrypted mode needed, and encrypted password supplied. */
  91                 lm_response = data_blob(pass, passlen);
  92         } else if (passlen > 0) {
  93                 /* Plaintext mode needed, assume plaintext supplied. */
  94                 passlen = clistr_push(cli, pword, pass, sizeof(pword), STR_TERMINATE);
  95                 lm_response = data_blob(pass, passlen);
  96         }
  97
  98         /* send a session setup command */
  99         memset(cli->outbuf,'\0',smb_size);
 100         cli_set_message(cli->outbuf,10, 0, True);
 101         SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
 102         cli_setup_packet(cli);
 103
 104         SCVAL(cli->outbuf,smb_vwv0,0xFF);
 105         SSVAL(cli->outbuf,smb_vwv2,cli->max_xmit);
 106         SSVAL(cli->outbuf,smb_vwv3,2);
 107         SSVAL(cli->outbuf,smb_vwv4,1);
 108         SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
 109         SSVAL(cli->outbuf,smb_vwv7,lm_response.length);
 110
 111         p = smb_buf(cli->outbuf);
 112         memcpy(p,lm_response.data,lm_response.length);
 113         p += lm_response.length;
 114         p += clistr_push(cli, p, user, -1, STR_TERMINATE|STR_UPPER);
 115         p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE|STR_UPPER);
 116         p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
 117         p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
 118         cli_setup_bcc(cli, p);
 119
 120         if (!cli_send_smb(cli) || !cli_receive_smb(cli)) {
 121                 return cli_nt_error(cli);
 122         }
 123
 124         show_msg(cli->inbuf);
 125
 126         if (cli_is_error(cli)) {
 127                 return cli_nt_error(cli);
 128         }
 129
 130         /* use the returned vuid from now on */
 131         cli->vuid = SVAL(cli->inbuf,smb_uid);
 132         fstrcpy(cli->user_name, user);
 133
 134         if (session_key.data) {
 135                 /* Have plaintext orginal */
 136                 cli_set_session_key(cli, session_key);
 137         }
 138
 139         return NT_STATUS_OK;
 140 }
 141
 142 /****************************************************************************
 143  Work out suitable capabilities to offer the server.
 144 ****************************************************************************/
 145
 146 static uint32 cli_session_setup_capabilities(struct cli_state *cli)
 147 {
 148         uint32 capabilities = CAP_NT_SMBS;
 149
 150         if (!cli->force_dos_errors)
 151                 capabilities |= CAP_STATUS32;
 152
 153         if (cli->use_level_II_oplocks)
 154                 capabilities |= CAP_LEVEL_II_OPLOCKS;
 155
 156         capabilities |= (cli->capabilities & (CAP_UNICODE|CAP_LARGE_FILES|CAP_LARGE_READX|CAP_LARGE_WRITEX|CAP_DFS));
 157         return capabilities;
 158 }
 159
 160 /****************************************************************************
 161  Do a NT1 guest session setup.
 162 ****************************************************************************/
 163
 164 struct async_req *cli_session_setup_guest_send(TALLOC_CTX *mem_ctx,
 165                                                struct event_context *ev,
 166                                                struct cli_state *cli)
 167 {
 168         struct async_req *result;
 169         uint16_t vwv[13];
 170         uint8_t *bytes;
 171
 172         SCVAL(vwv+0, 0, 0xFF);
 173         SCVAL(vwv+0, 1, 0);
 174         SSVAL(vwv+1, 0, 0);
 175         SSVAL(vwv+2, 0, CLI_BUFFER_SIZE);
 176         SSVAL(vwv+3, 0, 2);
 177         SSVAL(vwv+4, 0, cli->pid);
 178         SIVAL(vwv+5, 0, cli->sesskey);
 179         SSVAL(vwv+7, 0, 0);
 180         SSVAL(vwv+8, 0, 0);
 181         SSVAL(vwv+9, 0, 0);
 182         SSVAL(vwv+10, 0, 0);
 183         SIVAL(vwv+11, 0, cli_session_setup_capabilities(cli));
 184
 185         bytes = talloc_array(talloc_tos(), uint8_t, 0);
 186
 187         bytes = smb_bytes_push_str(bytes, cli_ucs2(cli), "",  1, /* username */
 188                                    NULL);
 189         bytes = smb_bytes_push_str(bytes, cli_ucs2(cli), "", 1, /* workgroup */
 190                                    NULL);
 191         bytes = smb_bytes_push_str(bytes, cli_ucs2(cli), "Unix", 5, NULL);
 192         bytes = smb_bytes_push_str(bytes, cli_ucs2(cli), "Samba", 6, NULL);
 193
 194         if (bytes == NULL) {
 195                 return NULL;
 196         }
 197
 198         result = cli_request_send(mem_ctx, ev, cli, SMBsesssetupX, 0,
 199                                   13, vwv, 0, talloc_get_size(bytes), bytes);
 200         TALLOC_FREE(bytes);
 201         return result;
 202 }
 203
 204 NTSTATUS cli_session_setup_guest_recv(struct async_req *req)
 205 {
 206         struct cli_request *cli_req = talloc_get_type_abort(
 207                 req->private_data, struct cli_request);
 208         struct cli_state *cli = cli_req->cli;
 209         uint8_t wct;
 210         uint16_t *vwv;
 211         uint16_t num_bytes;
 212         uint8_t *bytes;
 213         uint8_t *p;
 214         NTSTATUS status;
 215
 216         if (async_req_is_nterror(req, &status)) {
 217                 return status;
 218         }
 219
 220         status = cli_pull_reply(req, &wct, &vwv, &num_bytes, &bytes);
 221         if (!NT_STATUS_IS_OK(status)) {
 222                 return status;
 223         }
 224
 225         p = bytes;
 226
 227         cli->vuid = SVAL(cli_req->inbuf, smb_uid);
 228
 229         p += clistr_pull(cli_req->inbuf, cli->server_os, (char *)p,
 230                          sizeof(fstring), bytes+num_bytes-p, STR_TERMINATE);
 231         p += clistr_pull(cli_req->inbuf, cli->server_type, (char *)p,
 232                          sizeof(fstring), bytes+num_bytes-p, STR_TERMINATE);
 233         p += clistr_pull(cli_req->inbuf, cli->server_domain, (char *)p,
 234                          sizeof(fstring), bytes+num_bytes-p, STR_TERMINATE);
 235
 236         if (strstr(cli->server_type, "Samba")) {
 237                 cli->is_samba = True;
 238         }
 239
 240         fstrcpy(cli->user_name, "");
 241
 242         return NT_STATUS_OK;
 243 }
 244
 245 static NTSTATUS cli_session_setup_guest(struct cli_state *cli)
 246 {
 247         TALLOC_CTX *frame = talloc_stackframe();
 248         struct event_context *ev;
 249         struct async_req *req;
 250         NTSTATUS status;
 251
 252         if (cli->fd_event != NULL) {
 253                 /*
 254                  * Can't use sync call while an async call is in flight
 255                  */
 256                 status = NT_STATUS_INVALID_PARAMETER;
 257                 goto fail;
 258         }
 259
 260         ev = event_context_init(frame);
 261         if (ev == NULL) {
 262                 status = NT_STATUS_NO_MEMORY;
 263                 goto fail;
 264         }
 265
 266         req = cli_session_setup_guest_send(frame, ev, cli);
 267         if (req == NULL) {
 268                 status = NT_STATUS_NO_MEMORY;
 269                 goto fail;
 270         }
 271
 272         while (req->state < ASYNC_REQ_DONE) {
 273                 event_loop_once(ev);
 274         }
 275
 276         status = cli_session_setup_guest_recv(req);
 277  fail:
 278         TALLOC_FREE(frame);
 279         return status;
 280 }
 281
 282 /****************************************************************************
 283  Do a NT1 plaintext session setup.
 284 ****************************************************************************/
 285
 286 static NTSTATUS cli_session_setup_plaintext(struct cli_state *cli,
 287                                             const char *user, const char *pass,
 288                                             const char *workgroup)
 289 {
 290         uint32 capabilities = cli_session_setup_capabilities(cli);
 291         char *p;
 292         fstring lanman;
 293
 294         fstr_sprintf( lanman, "Samba %s", samba_version_string());
 295
 296         memset(cli->outbuf, '\0', smb_size);
 297         cli_set_message(cli->outbuf,13,0,True);
 298         SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
 299         cli_setup_packet(cli);
 300
 301         SCVAL(cli->outbuf,smb_vwv0,0xFF);
 302         SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
 303         SSVAL(cli->outbuf,smb_vwv3,2);
 304         SSVAL(cli->outbuf,smb_vwv4,cli->pid);
 305         SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
 306         SSVAL(cli->outbuf,smb_vwv8,0);
 307         SIVAL(cli->outbuf,smb_vwv11,capabilities);
 308         p = smb_buf(cli->outbuf);
 309
 310         /* check wether to send the ASCII or UNICODE version of the password */
 311
 312         if ( (capabilities & CAP_UNICODE) == 0 ) {
 313                 p += clistr_push(cli, p, pass, -1, STR_TERMINATE); /* password */
 314                 SSVAL(cli->outbuf,smb_vwv7,PTR_DIFF(p, smb_buf(cli->outbuf)));
 315         }
 316         else {
 317                 /* For ucs2 passwords clistr_push calls ucs2_align, which causes
 318                  * the space taken by the unicode password to be one byte too
 319                  * long (as we're on an odd byte boundary here). Reduce the
 320                  * count by 1 to cope with this. Fixes smbclient against NetApp
 321                  * servers which can't cope. Fix from
 322                  * bryan.kolodziej@allenlund.com in bug #3840.
 323                  */
 324                 p += clistr_push(cli, p, pass, -1, STR_UNICODE|STR_TERMINATE); /* unicode password */
 325                 SSVAL(cli->outbuf,smb_vwv8,PTR_DIFF(p, smb_buf(cli->outbuf))-1);
 326         }
 327
 328         p += clistr_push(cli, p, user, -1, STR_TERMINATE); /* username */
 329         p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE); /* workgroup */
 330         p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
 331         p += clistr_push(cli, p, lanman, -1, STR_TERMINATE);
 332         cli_setup_bcc(cli, p);
 333
 334         if (!cli_send_smb(cli) || !cli_receive_smb(cli)) {
 335                 return cli_nt_error(cli);
 336         }
 337
 338         show_msg(cli->inbuf);
 339
 340         if (cli_is_error(cli)) {
 341                 return cli_nt_error(cli);
 342         }
 343
 344         cli->vuid = SVAL(cli->inbuf,smb_uid);
 345         p = smb_buf(cli->inbuf);
 346         p += clistr_pull(cli->inbuf, cli->server_os, p, sizeof(fstring),
 347                          -1, STR_TERMINATE);
 348         p += clistr_pull(cli->inbuf, cli->server_type, p, sizeof(fstring),
 349                          -1, STR_TERMINATE);
 350         p += clistr_pull(cli->inbuf, cli->server_domain, p, sizeof(fstring),
 351                          -1, STR_TERMINATE);
 352         fstrcpy(cli->user_name, user);
 353
 354         if (strstr(cli->server_type, "Samba")) {
 355                 cli->is_samba = True;
 356         }
 357
 358         return NT_STATUS_OK;
 359 }
 360
 361 /****************************************************************************
 362    do a NT1 NTLM/LM encrypted session setup - for when extended security
 363    is not negotiated.
 364    @param cli client state to create do session setup on
 365    @param user username
 366    @param pass *either* cleartext password (passlen !=24) or LM response.
 367    @param ntpass NT response, implies ntpasslen >=24, implies pass is not clear
 368    @param workgroup The user's domain.
 369 ****************************************************************************/
 370
 371 static NTSTATUS cli_session_setup_nt1(struct cli_state *cli, const char *user,
 372                                       const char *pass, size_t passlen,
 373                                       const char *ntpass, size_t ntpasslen,
 374                                       const char *workgroup)
 375 {
 376         uint32 capabilities = cli_session_setup_capabilities(cli);
 377         DATA_BLOB lm_response = data_blob_null;
 378         DATA_BLOB nt_response = data_blob_null;
 379         DATA_BLOB session_key = data_blob_null;
 380         NTSTATUS result;
 381         char *p;
 382         bool ok;
 383
 384         if (passlen == 0) {
 385                 /* do nothing - guest login */
 386         } else if (passlen != 24) {
 387                 if (lp_client_ntlmv2_auth()) {
 388                         DATA_BLOB server_chal;
 389                         DATA_BLOB names_blob;
 390                         server_chal = data_blob(cli->secblob.data, MIN(cli->secblob.length, 8));
 391
 392                         /* note that the 'workgroup' here is a best guess - we don't know
 393                            the server's domain at this point.  The 'server name' is also
 394                            dodgy...
 395                         */
 396                         names_blob = NTLMv2_generate_names_blob(cli->called.name, workgroup);
 397
 398                         if (!SMBNTLMv2encrypt(user, workgroup, pass, &server_chal,
 399                                               &names_blob,
 400                                               &lm_response, &nt_response, &session_key)) {
 401                                 data_blob_free(&names_blob);
 402                                 data_blob_free(&server_chal);
 403                                 return NT_STATUS_ACCESS_DENIED;
 404                         }
 405                         data_blob_free(&names_blob);
 406                         data_blob_free(&server_chal);
 407
 408                 } else {
 409                         uchar nt_hash[16];
 410                         E_md4hash(pass, nt_hash);
 411
 412 #ifdef LANMAN_ONLY
 413                         nt_response = data_blob_null;
 414 #else
 415                         nt_response = data_blob(NULL, 24);
 416                         SMBNTencrypt(pass,cli->secblob.data,nt_response.data);
 417 #endif
 418                         /* non encrypted password supplied. Ignore ntpass. */
 419                         if (lp_client_lanman_auth()) {
 420                                 lm_response = data_blob(NULL, 24);
 421                                 if (!SMBencrypt(pass,cli->secblob.data, lm_response.data)) {
 422                                         /* Oops, the LM response is invalid, just put
 423                                            the NT response there instead */
 424                                         data_blob_free(&lm_response);
 425                                         lm_response = data_blob(nt_response.data, nt_response.length);
 426                                 }
 427                         } else {
 428                                 /* LM disabled, place NT# in LM field instead */
 429                                 lm_response = data_blob(nt_response.data, nt_response.length);
 430                         }
 431
 432                         session_key = data_blob(NULL, 16);
 433 #ifdef LANMAN_ONLY
 434                         E_deshash(pass, session_key.data);
 435                         memset(&session_key.data[8], '\0', 8);
 436 #else
 437                         SMBsesskeygen_ntv1(nt_hash, NULL, session_key.data);
 438 #endif
 439                 }
 440                 cli_temp_set_signing(cli);
 441         } else {
 442                 /* pre-encrypted password supplied.  Only used for
 443                    security=server, can't do
 444                    signing because we don't have original key */
 445
 446                 lm_response = data_blob(pass, passlen);
 447                 nt_response = data_blob(ntpass, ntpasslen);
 448         }
 449
 450         /* send a session setup command */
 451         memset(cli->outbuf,'\0',smb_size);
 452
 453         cli_set_message(cli->outbuf,13,0,True);
 454         SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
 455         cli_setup_packet(cli);
 456
 457         SCVAL(cli->outbuf,smb_vwv0,0xFF);
 458         SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
 459         SSVAL(cli->outbuf,smb_vwv3,2);
 460         SSVAL(cli->outbuf,smb_vwv4,cli->pid);
 461         SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
 462         SSVAL(cli->outbuf,smb_vwv7,lm_response.length);
 463         SSVAL(cli->outbuf,smb_vwv8,nt_response.length);
 464         SIVAL(cli->outbuf,smb_vwv11,capabilities);
 465         p = smb_buf(cli->outbuf);
 466         if (lm_response.length) {
 467                 memcpy(p,lm_response.data, lm_response.length); p += lm_response.length;
 468         }
 469         if (nt_response.length) {
 470                 memcpy(p,nt_response.data, nt_response.length); p += nt_response.length;
 471         }
 472         p += clistr_push(cli, p, user, -1, STR_TERMINATE);
 473
 474         /* Upper case here might help some NTLMv2 implementations */
 475         p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE|STR_UPPER);
 476         p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
 477         p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
 478         cli_setup_bcc(cli, p);
 479
 480         if (!cli_send_smb(cli) || !cli_receive_smb(cli)) {
 481                 result = cli_nt_error(cli);
 482                 goto end;
 483         }
 484
 485         /* show_msg(cli->inbuf); */
 486
 487         if (cli_is_error(cli)) {
 488                 result = cli_nt_error(cli);
 489                 goto end;
 490         }
 491
 492 #ifdef LANMAN_ONLY
 493         ok = cli_simple_set_signing(cli, session_key, lm_response);
 494 #else
 495         ok = cli_simple_set_signing(cli, session_key, nt_response);
 496 #endif
 497         if (ok) {
 498                 /* 'resign' the last message, so we get the right sequence numbers
 499                    for checking the first reply from the server */
 500                 cli_calculate_sign_mac(cli, cli->outbuf);
 501
 502                 if (!cli_check_sign_mac(cli, cli->inbuf)) {
 503                         result = NT_STATUS_ACCESS_DENIED;
 504                         goto end;
 505                 }
 506         }
 507
 508         /* use the returned vuid from now on */
 509         cli->vuid = SVAL(cli->inbuf,smb_uid);
 510
 511         p = smb_buf(cli->inbuf);
 512         p += clistr_pull(cli->inbuf, cli->server_os, p, sizeof(fstring),
 513                          -1, STR_TERMINATE);
 514         p += clistr_pull(cli->inbuf, cli->server_type, p, sizeof(fstring),
 515                          -1, STR_TERMINATE);
 516         p += clistr_pull(cli->inbuf, cli->server_domain, p, sizeof(fstring),
 517                          -1, STR_TERMINATE);
 518
 519         if (strstr(cli->server_type, "Samba")) {
 520                 cli->is_samba = True;
 521         }
 522
 523         fstrcpy(cli->user_name, user);
 524
 525         if (session_key.data) {
 526                 /* Have plaintext orginal */
 527                 cli_set_session_key(cli, session_key);
 528         }
 529
 530         result = NT_STATUS_OK;
 531 end:
 532         data_blob_free(&lm_response);
 533         data_blob_free(&nt_response);
 534         data_blob_free(&session_key);
 535         return result;
 536 }
 537
 538 /****************************************************************************
 539  Send a extended security session setup blob
 540 ****************************************************************************/
 541
 542 static bool cli_session_setup_blob_send(struct cli_state *cli, DATA_BLOB blob)
 543 {
 544         uint32 capabilities = cli_session_setup_capabilities(cli);
 545         char *p;
 546
 547         capabilities |= CAP_EXTENDED_SECURITY;
 548
 549         /* send a session setup command */
 550         memset(cli->outbuf,'\0',smb_size);
 551
 552         cli_set_message(cli->outbuf,12,0,True);
 553         SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
 554
 555         cli_setup_packet(cli);
 556
 557         SCVAL(cli->outbuf,smb_vwv0,0xFF);
 558         SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
 559         SSVAL(cli->outbuf,smb_vwv3,2);
 560         SSVAL(cli->outbuf,smb_vwv4,1);
 561         SIVAL(cli->outbuf,smb_vwv5,0);
 562         SSVAL(cli->outbuf,smb_vwv7,blob.length);
 563         SIVAL(cli->outbuf,smb_vwv10,capabilities);
 564         p = smb_buf(cli->outbuf);
 565         memcpy(p, blob.data, blob.length);
 566         p += blob.length;
 567         p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
 568         p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
 569         cli_setup_bcc(cli, p);
 570         return cli_send_smb(cli);
 571 }
 572
 573 /****************************************************************************
 574  Send a extended security session setup blob, returning a reply blob.
 575 ****************************************************************************/
 576
 577 static DATA_BLOB cli_session_setup_blob_receive(struct cli_state *cli)
 578 {
 579         DATA_BLOB blob2 = data_blob_null;
 580         char *p;
 581         size_t len;
 582
 583         if (!cli_receive_smb(cli))
 584                 return blob2;
 585
 586         show_msg(cli->inbuf);
 587
 588         if (cli_is_error(cli) && !NT_STATUS_EQUAL(cli_nt_error(cli),
 589                                                   NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 590                 return blob2;
 591         }
 592
 593         /* use the returned vuid from now on */
 594         cli->vuid = SVAL(cli->inbuf,smb_uid);
 595
 596         p = smb_buf(cli->inbuf);
 597
 598         blob2 = data_blob(p, SVAL(cli->inbuf, smb_vwv3));
 599
 600         p += blob2.length;
 601         p += clistr_pull(cli->inbuf, cli->server_os, p, sizeof(fstring),
 602                          -1, STR_TERMINATE);
 603
 604         /* w2k with kerberos doesn't properly null terminate this field */
 605         len = smb_bufrem(cli->inbuf, p);
 606         p += clistr_pull(cli->inbuf, cli->server_type, p, sizeof(fstring),
 607                          len, 0);
 608
 609         return blob2;
 610 }
 611
 612 #ifdef HAVE_KRB5
 613 /****************************************************************************
 614  Send a extended security session setup blob, returning a reply blob.
 615 ****************************************************************************/
 616
 617 /* The following is calculated from :
 618  * (smb_size-4) = 35
 619  * (smb_wcnt * 2) = 24 (smb_wcnt == 12 in cli_session_setup_blob_send() )
 620  * (strlen("Unix") + 1 + strlen("Samba") + 1) * 2 = 22 (unicode strings at
 621  * end of packet.
 622  */
 623
 624 #define BASE_SESSSETUP_BLOB_PACKET_SIZE (35 + 24 + 22)
 625
 626 static bool cli_session_setup_blob(struct cli_state *cli, DATA_BLOB blob)
 627 {
 628         int32 remaining = blob.length;
 629         int32 cur = 0;
 630         DATA_BLOB send_blob = data_blob_null;
 631         int32 max_blob_size = 0;
 632         DATA_BLOB receive_blob = data_blob_null;
 633
 634         if (cli->max_xmit < BASE_SESSSETUP_BLOB_PACKET_SIZE + 1) {
 635                 DEBUG(0,("cli_session_setup_blob: cli->max_xmit too small "
 636                         "(was %u, need minimum %u)\n",
 637                         (unsigned int)cli->max_xmit,
 638                         BASE_SESSSETUP_BLOB_PACKET_SIZE));
 639                 cli_set_nt_error(cli, NT_STATUS_INVALID_PARAMETER);
 640                 return False;
 641         }
 642
 643         max_blob_size = cli->max_xmit - BASE_SESSSETUP_BLOB_PACKET_SIZE;
 644
 645         while ( remaining > 0) {
 646                 if (remaining >= max_blob_size) {
 647                         send_blob.length = max_blob_size;
 648                         remaining -= max_blob_size;
 649                 } else {
 650                         send_blob.length = remaining;
 651                         remaining = 0;
 652                 }
 653
 654                 send_blob.data =  &blob.data[cur];
 655                 cur += send_blob.length;
 656
 657                 DEBUG(10, ("cli_session_setup_blob: Remaining (%u) sending (%u) current (%u)\n",
 658                         (unsigned int)remaining,
 659                         (unsigned int)send_blob.length,
 660                         (unsigned int)cur ));
 661
 662                 if (!cli_session_setup_blob_send(cli, send_blob)) {
 663                         DEBUG(0, ("cli_session_setup_blob: send failed\n"));
 664                         return False;
 665                 }
 666
 667                 receive_blob = cli_session_setup_blob_receive(cli);
 668                 data_blob_free(&receive_blob);
 669
 670                 if (cli_is_error(cli) &&
 671                                 !NT_STATUS_EQUAL( cli_get_nt_error(cli),
 672                                         NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 673                         DEBUG(0, ("cli_session_setup_blob: receive failed "
 674                                   "(%s)\n", nt_errstr(cli_get_nt_error(cli))));
 675                         cli->vuid = 0;
 676                         return False;
 677                 }
 678         }
 679
 680         return True;
 681 }
 682
 683 /****************************************************************************
 684  Use in-memory credentials cache
 685 ****************************************************************************/
 686
 687 static void use_in_memory_ccache(void) {
 688         setenv(KRB5_ENV_CCNAME, "MEMORY:cliconnect", 1);
 689 }
 690
 691 /****************************************************************************
 692  Do a spnego/kerberos encrypted session setup.
 693 ****************************************************************************/
 694
 695 static ADS_STATUS cli_session_setup_kerberos(struct cli_state *cli, const char *principal, const char *workgroup)
 696 {
 697         DATA_BLOB negTokenTarg;
 698         DATA_BLOB session_key_krb5;
 699         NTSTATUS nt_status;
 700         int rc;
 701
 702         cli_temp_set_signing(cli);
 703
 704         DEBUG(2,("Doing kerberos session setup\n"));
 705
 706         /* generate the encapsulated kerberos5 ticket */
 707         rc = spnego_gen_negTokenTarg(principal, 0, &negTokenTarg, &session_key_krb5, 0, NULL);
 708
 709         if (rc) {
 710                 DEBUG(1, ("cli_session_setup_kerberos: spnego_gen_negTokenTarg failed: %s\n",
 711                         error_message(rc)));
 712                 return ADS_ERROR_KRB5(rc);
 713         }
 714
 715 #if 0
 716         file_save("negTokenTarg.dat", negTokenTarg.data, negTokenTarg.length);
 717 #endif
 718
 719         if (!cli_session_setup_blob(cli, negTokenTarg)) {
 720                 nt_status = cli_nt_error(cli);
 721                 goto nt_error;
 722         }
 723
 724         if (cli_is_error(cli)) {
 725                 nt_status = cli_nt_error(cli);
 726                 if (NT_STATUS_IS_OK(nt_status)) {
 727                         nt_status = NT_STATUS_UNSUCCESSFUL;
 728                 }
 729                 goto nt_error;
 730         }
 731
 732         cli_set_session_key(cli, session_key_krb5);
 733
 734         if (cli_simple_set_signing(
 735                     cli, session_key_krb5, data_blob_null)) {
 736
 737                 /* 'resign' the last message, so we get the right sequence numbers
 738                    for checking the first reply from the server */
 739                 cli_calculate_sign_mac(cli, cli->outbuf);
 740
 741                 if (!cli_check_sign_mac(cli, cli->inbuf)) {
 742                         nt_status = NT_STATUS_ACCESS_DENIED;
 743                         goto nt_error;
 744                 }
 745         }
 746
 747         data_blob_free(&negTokenTarg);
 748         data_blob_free(&session_key_krb5);
 749
 750         return ADS_ERROR_NT(NT_STATUS_OK);
 751
 752 nt_error:
 753         data_blob_free(&negTokenTarg);
 754         data_blob_free(&session_key_krb5);
 755         cli->vuid = 0;
 756         return ADS_ERROR_NT(nt_status);
 757 }
 758 #endif  /* HAVE_KRB5 */
 759
 760
 761 /****************************************************************************
 762  Do a spnego/NTLMSSP encrypted session setup.
 763 ****************************************************************************/
 764
 765 static NTSTATUS cli_session_setup_ntlmssp(struct cli_state *cli, const char *user,
 766                                           const char *pass, const char *domain)
 767 {
 768         struct ntlmssp_state *ntlmssp_state;
 769         NTSTATUS nt_status;
 770         int turn = 1;
 771         DATA_BLOB msg1;
 772         DATA_BLOB blob = data_blob_null;
 773         DATA_BLOB blob_in = data_blob_null;
 774         DATA_BLOB blob_out = data_blob_null;
 775
 776         cli_temp_set_signing(cli);
 777
 778         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_client_start(&ntlmssp_state))) {
 779                 return nt_status;
 780         }
 781         ntlmssp_want_feature(ntlmssp_state, NTLMSSP_FEATURE_SESSION_KEY);
 782
 783         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_username(ntlmssp_state, user))) {
 784                 return nt_status;
 785         }
 786         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_domain(ntlmssp_state, domain))) {
 787                 return nt_status;
 788         }
 789         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_password(ntlmssp_state, pass))) {
 790                 return nt_status;
 791         }
 792
 793         do {
 794                 nt_status = ntlmssp_update(ntlmssp_state,
 795                                                   blob_in, &blob_out);
 796                 data_blob_free(&blob_in);
 797                 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED) || NT_STATUS_IS_OK(nt_status)) {
 798                         if (turn == 1) {
 799                                 /* and wrap it in a SPNEGO wrapper */
 800                                 msg1 = gen_negTokenInit(OID_NTLMSSP, blob_out);
 801                         } else {
 802                                 /* wrap it in SPNEGO */
 803                                 msg1 = spnego_gen_auth(blob_out);
 804                         }
 805
 806                         /* now send that blob on its way */
 807                         if (!cli_session_setup_blob_send(cli, msg1)) {
 808                                 DEBUG(3, ("Failed to send NTLMSSP/SPNEGO blob to server!\n"));
 809                                 nt_status = NT_STATUS_UNSUCCESSFUL;
 810                         } else {
 811                                 blob = cli_session_setup_blob_receive(cli);
 812
 813                                 nt_status = cli_nt_error(cli);
 814                                 if (cli_is_error(cli) && NT_STATUS_IS_OK(nt_status)) {
 815                                         if (cli->smb_rw_error == SMB_READ_BAD_SIG) {
 816                                                 nt_status = NT_STATUS_ACCESS_DENIED;
 817                                         } else {
 818                                                 nt_status = NT_STATUS_UNSUCCESSFUL;
 819                                         }
 820                                 }
 821                         }
 822                         data_blob_free(&msg1);
 823                 }
 824
 825                 if (!blob.length) {
 826                         if (NT_STATUS_IS_OK(nt_status)) {
 827                                 nt_status = NT_STATUS_UNSUCCESSFUL;
 828                         }
 829                 } else if ((turn == 1) &&
 830                            NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 831                         DATA_BLOB tmp_blob = data_blob_null;
 832                         /* the server might give us back two challenges */
 833                         if (!spnego_parse_challenge(blob, &blob_in,
 834                                                     &tmp_blob)) {
 835                                 DEBUG(3,("Failed to parse challenges\n"));
 836                                 nt_status = NT_STATUS_INVALID_PARAMETER;
 837                         }
 838                         data_blob_free(&tmp_blob);
 839                 } else {
 840                         if (!spnego_parse_auth_response(blob, nt_status, OID_NTLMSSP,
 841                                                         &blob_in)) {
 842                                 DEBUG(3,("Failed to parse auth response\n"));
 843                                 if (NT_STATUS_IS_OK(nt_status)
 844                                     || NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED))
 845                                         nt_status = NT_STATUS_INVALID_PARAMETER;
 846                         }
 847                 }
 848                 data_blob_free(&blob);
 849                 data_blob_free(&blob_out);
 850                 turn++;
 851         } while (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED));
 852
 853         data_blob_free(&blob_in);
 854
 855         if (NT_STATUS_IS_OK(nt_status)) {
 856
 857                 fstrcpy(cli->server_domain, ntlmssp_state->server_domain);
 858                 cli_set_session_key(cli, ntlmssp_state->session_key);
 859
 860                 if (cli_simple_set_signing(
 861                             cli, ntlmssp_state->session_key, data_blob_null)) {
 862
 863                         /* 'resign' the last message, so we get the right sequence numbers
 864                            for checking the first reply from the server */
 865                         cli_calculate_sign_mac(cli, cli->outbuf);
 866
 867                         if (!cli_check_sign_mac(cli, cli->inbuf)) {
 868                                 nt_status = NT_STATUS_ACCESS_DENIED;
 869                         }
 870                 }
 871         }
 872
 873         /* we have a reference conter on ntlmssp_state, if we are signing
 874            then the state will be kept by the signing engine */
 875
 876         ntlmssp_end(&ntlmssp_state);
 877
 878         if (!NT_STATUS_IS_OK(nt_status)) {
 879                 cli->vuid = 0;
 880         }
 881         return nt_status;
 882 }
 883
 884 /****************************************************************************
 885  Do a spnego encrypted session setup.
 886
 887  user_domain: The shortname of the domain the user/machine is a member of.
 888  dest_realm: The realm we're connecting to, if NULL we use our default realm.
 889 ****************************************************************************/
 890
 891 ADS_STATUS cli_session_setup_spnego(struct cli_state *cli, const char *user,
 892                               const char *pass, const char *user_domain,
 893                               const char * dest_realm)
 894 {
 895         char *principal = NULL;
 896         char *OIDs[ASN1_MAX_OIDS];
 897         int i;
 898         DATA_BLOB blob;
 899         const char *p = NULL;
 900         char *account = NULL;
 901
 902         DEBUG(3,("Doing spnego session setup (blob length=%lu)\n", (unsigned long)cli->secblob.length));
 903
 904         /* the server might not even do spnego */
 905         if (cli->secblob.length <= 16) {
 906                 DEBUG(3,("server didn't supply a full spnego negprot\n"));
 907                 goto ntlmssp;
 908         }
 909
 910 #if 0
 911         file_save("negprot.dat", cli->secblob.data, cli->secblob.length);
 912 #endif
 913
 914         /* there is 16 bytes of GUID before the real spnego packet starts */
 915         blob = data_blob(cli->secblob.data+16, cli->secblob.length-16);
 916
 917         /* The server sent us the first part of the SPNEGO exchange in the
 918          * negprot reply. It is WRONG to depend on the principal sent in the
 919          * negprot reply, but right now we do it. If we don't receive one,
 920          * we try to best guess, then fall back to NTLM.  */
 921         if (!spnego_parse_negTokenInit(blob, OIDs, &principal)) {
 922                 data_blob_free(&blob);
 923                 return ADS_ERROR_NT(NT_STATUS_INVALID_PARAMETER);
 924         }
 925         data_blob_free(&blob);
 926
 927         /* make sure the server understands kerberos */
 928         for (i=0;OIDs[i];i++) {
 929                 DEBUG(3,("got OID=%s\n", OIDs[i]));
 930                 if (strcmp(OIDs[i], OID_KERBEROS5_OLD) == 0 ||
 931                     strcmp(OIDs[i], OID_KERBEROS5) == 0) {
 932                         cli->got_kerberos_mechanism = True;
 933                 }
 934                 talloc_free(OIDs[i]);
 935         }
 936
 937         DEBUG(3,("got principal=%s\n", principal ? principal : "<null>"));
 938
 939         fstrcpy(cli->user_name, user);
 940
 941 #ifdef HAVE_KRB5
 942         /* If password is set we reauthenticate to kerberos server
 943          * and do not store results */
 944
 945         if (cli->got_kerberos_mechanism && cli->use_kerberos) {
 946                 ADS_STATUS rc;
 947
 948                 if (pass && *pass) {
 949                         int ret;
 950
 951                         use_in_memory_ccache();
 952                         ret = kerberos_kinit_password(user, pass, 0 /* no time correction for now */, NULL);
 953
 954                         if (ret){
 955                                 TALLOC_FREE(principal);
 956                                 DEBUG(0, ("Kinit failed: %s\n", error_message(ret)));
 957                                 if (cli->fallback_after_kerberos)
 958                                         goto ntlmssp;
 959                                 return ADS_ERROR_KRB5(ret);
 960                         }
 961                 }
 962
 963                 /* If we get a bad principal, try to guess it if
 964                    we have a valid host NetBIOS name.
 965                  */
 966                 if (strequal(principal, ADS_IGNORE_PRINCIPAL)) {
 967                         TALLOC_FREE(principal);
 968                 }
 969
 970                 if (principal == NULL &&
 971                         !is_ipaddress(cli->desthost) &&
 972                         !strequal(STAR_SMBSERVER,
 973                                 cli->desthost)) {
 974                         char *realm = NULL;
 975                         char *machine = NULL;
 976                         char *host = NULL;
 977                         DEBUG(3,("cli_session_setup_spnego: got a "
 978                                 "bad server principal, trying to guess ...\n"));
 979
 980                         host = strchr_m(cli->desthost, '.');
 981                         if (host) {
 982                                 machine = SMB_STRNDUP(cli->desthost,
 983                                         host - cli->desthost);
 984                         } else {
 985                                 machine = SMB_STRDUP(cli->desthost);
 986                         }
 987                         if (machine == NULL) {
 988                                 return ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
 989                         }
 990
 991                         if (dest_realm) {
 992                                 realm = SMB_STRDUP(dest_realm);
 993                                 strupper_m(realm);
 994                         } else {
 995                                 realm = kerberos_get_default_realm_from_ccache();
 996                         }
 997                         if (realm && *realm) {
 998                                 principal = talloc_asprintf(NULL, "%s$@%s",
 999                                                         machine, realm);
1000                                 if (!principal) {
1001                                         SAFE_FREE(machine);
1002                                         SAFE_FREE(realm);
1003                                         return ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
1004                                 }
1005                                 DEBUG(3,("cli_session_setup_spnego: guessed "
1006                                         "server principal=%s\n",
1007                                         principal ? principal : "<null>"));
1008                         }
1009                         SAFE_FREE(machine);
1010                         SAFE_FREE(realm);
1011                 }
1012
1013                 if (principal) {
1014                         rc = cli_session_setup_kerberos(cli, principal,
1015                                 dest_realm);
1016                         if (ADS_ERR_OK(rc) || !cli->fallback_after_kerberos) {
1017                                 TALLOC_FREE(principal);
1018                                 return rc;
1019                         }
1020                 }
1021         }
1022 #endif
1023
1024         TALLOC_FREE(principal);
1025
1026 ntlmssp:
1027
1028         account = talloc_strdup(talloc_tos(), user);
1029         if (!account) {
1030                 return ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
1031         }
1032
1033         /* when falling back to ntlmssp while authenticating with a machine
1034          * account strip off the realm - gd */
1035
1036         if ((p = strchr_m(user, '@')) != NULL) {
1037                 account[PTR_DIFF(p,user)] = '\0';
1038         }
1039
1040         return ADS_ERROR_NT(cli_session_setup_ntlmssp(cli, account, pass, user_domain));
1041 }
1042
1043 /****************************************************************************
1044  Send a session setup. The username and workgroup is in UNIX character
1045  format and must be converted to DOS codepage format before sending. If the
1046  password is in plaintext, the same should be done.
1047 ****************************************************************************/
1048
1049 NTSTATUS cli_session_setup(struct cli_state *cli,
1050                            const char *user,
1051                            const char *pass, int passlen,
1052                            const char *ntpass, int ntpasslen,
1053                            const char *workgroup)
1054 {
1055         char *p;
1056         fstring user2;
1057
1058         if (user) {
1059                 fstrcpy(user2, user);
1060         } else {
1061                 user2[0] ='\0';
1062         }
1063
1064         if (!workgroup) {
1065                 workgroup = "";
1066         }
1067
1068         /* allow for workgroups as part of the username */
1069         if ((p=strchr_m(user2,'\\')) || (p=strchr_m(user2,'/')) ||
1070             (p=strchr_m(user2,*lp_winbind_separator()))) {
1071                 *p = 0;
1072                 user = p+1;
1073                 workgroup = user2;
1074         }
1075
1076         if (cli->protocol < PROTOCOL_LANMAN1) {
1077                 return NT_STATUS_OK;
1078         }
1079
1080         /* now work out what sort of session setup we are going to
1081            do. I have split this into separate functions to make the
1082            flow a bit easier to understand (tridge) */
1083
1084         /* if its an older server then we have to use the older request format */
1085
1086         if (cli->protocol < PROTOCOL_NT1) {
1087                 if (!lp_client_lanman_auth() && passlen != 24 && (*pass)) {
1088                         DEBUG(1, ("Server requested LM password but 'client lanman auth'"
1089                                   " is disabled\n"));
1090                         return NT_STATUS_ACCESS_DENIED;
1091                 }
1092
1093                 if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0 &&
1094                     !lp_client_plaintext_auth() && (*pass)) {
1095                         DEBUG(1, ("Server requested plaintext password but "
1096                                   "'client plaintext auth' is disabled\n"));
1097                         return NT_STATUS_ACCESS_DENIED;
1098                 }
1099
1100                 return cli_session_setup_lanman2(cli, user, pass, passlen,
1101                                                  workgroup);
1102         }
1103
1104         /* if no user is supplied then we have to do an anonymous connection.
1105            passwords are ignored */
1106
1107         if (!user || !*user)
1108                 return cli_session_setup_guest(cli);
1109
1110         /* if the server is share level then send a plaintext null
1111            password at this point. The password is sent in the tree
1112            connect */
1113
1114         if ((cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) == 0)
1115                 return cli_session_setup_plaintext(cli, user, "", workgroup);
1116
1117         /* if the server doesn't support encryption then we have to use
1118            plaintext. The second password is ignored */
1119
1120         if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0) {
1121                 if (!lp_client_plaintext_auth() && (*pass)) {
1122                         DEBUG(1, ("Server requested plaintext password but "
1123                                   "'client plaintext auth' is disabled\n"));
1124                         return NT_STATUS_ACCESS_DENIED;
1125                 }
1126                 return cli_session_setup_plaintext(cli, user, pass, workgroup);
1127         }
1128
1129         /* if the server supports extended security then use SPNEGO */
1130
1131         if (cli->capabilities & CAP_EXTENDED_SECURITY) {
1132                 ADS_STATUS status = cli_session_setup_spnego(cli, user, pass,
1133                                                              workgroup, NULL);
1134                 if (!ADS_ERR_OK(status)) {
1135                         DEBUG(3, ("SPNEGO login failed: %s\n", ads_errstr(status)));
1136                         return ads_ntstatus(status);
1137                 }
1138         } else {
1139                 NTSTATUS status;
1140
1141                 /* otherwise do a NT1 style session setup */
1142                 status = cli_session_setup_nt1(cli, user, pass, passlen,
1143                                                ntpass, ntpasslen, workgroup);
1144                 if (!NT_STATUS_IS_OK(status)) {
1145                         DEBUG(3,("cli_session_setup: NT1 session setup "
1146                                  "failed: %s\n", nt_errstr(status)));
1147                         return status;
1148                 }
1149         }
1150
1151         if (strstr(cli->server_type, "Samba")) {
1152                 cli->is_samba = True;
1153         }
1154
1155         return NT_STATUS_OK;
1156 }
1157
1158 /****************************************************************************
1159  Send a uloggoff.
1160 *****************************************************************************/
1161
1162 bool cli_ulogoff(struct cli_state *cli)
1163 {
1164         memset(cli->outbuf,'\0',smb_size);
1165         cli_set_message(cli->outbuf,2,0,True);
1166         SCVAL(cli->outbuf,smb_com,SMBulogoffX);
1167         cli_setup_packet(cli);
1168         SSVAL(cli->outbuf,smb_vwv0,0xFF);
1169         SSVAL(cli->outbuf,smb_vwv2,0);  /* no additional info */
1170
1171         cli_send_smb(cli);
1172         if (!cli_receive_smb(cli))
1173                 return False;
1174
1175         if (cli_is_error(cli)) {
1176                 return False;
1177         }
1178
1179         cli->cnum = -1;
1180         return True;
1181 }
1182
1183 /****************************************************************************
1184  Send a tconX.
1185 ****************************************************************************/
1186
1187 struct async_req *cli_tcon_andx_send(TALLOC_CTX *mem_ctx,
1188                                      struct event_context *ev,
1189                                      struct cli_state *cli,
1190                                      const char *share, const char *dev,
1191                                      const char *pass, int passlen)
1192 {
1193         fstring pword;
1194         char *tmp = NULL;
1195         struct async_req *result;
1196         uint16_t vwv[4];
1197         uint8_t *bytes;
1198
1199         fstrcpy(cli->share, share);
1200
1201         /* in user level security don't send a password now */
1202         if (cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) {
1203                 passlen = 1;
1204                 pass = "";
1205         } else if (pass == NULL) {
1206                 DEBUG(1, ("Server not using user level security and no "
1207                           "password supplied.\n"));
1208                 goto access_denied;
1209         }
1210
1211         if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) &&
1212             *pass && passlen != 24) {
1213                 if (!lp_client_lanman_auth()) {
1214                         DEBUG(1, ("Server requested LANMAN password "
1215                                   "(share-level security) but "
1216                                   "'client lanman auth' is disabled\n"));
1217                         goto access_denied;
1218                 }
1219
1220                 /*
1221                  * Non-encrypted passwords - convert to DOS codepage before
1222                  * encryption.
1223                  */
1224                 passlen = 24;
1225                 SMBencrypt(pass, cli->secblob.data, (uchar *)pword);
1226         } else {
1227                 if((cli->sec_mode & (NEGOTIATE_SECURITY_USER_LEVEL
1228                                      |NEGOTIATE_SECURITY_CHALLENGE_RESPONSE))
1229                    == 0) {
1230                         if (!lp_client_plaintext_auth() && (*pass)) {
1231                                 DEBUG(1, ("Server requested plaintext "
1232                                           "password but 'client plaintext "
1233                                           "auth' is disabled\n"));
1234                                 goto access_denied;
1235                         }
1236
1237                         /*
1238                          * Non-encrypted passwords - convert to DOS codepage
1239                          * before using.
1240                          */
1241                         passlen = clistr_push(cli, pword, pass, sizeof(pword),
1242                                               STR_TERMINATE);
1243                         if (passlen == -1) {
1244                                 DEBUG(1, ("clistr_push(pword) failed\n"));
1245                                 goto access_denied;
1246                         }
1247                 } else {
1248                         if (passlen) {
1249                                 memcpy(pword, pass, passlen);
1250                         }
1251                 }
1252         }
1253
1254         SCVAL(vwv+0, 0, 0xFF);
1255         SCVAL(vwv+0, 1, 0);
1256         SSVAL(vwv+1, 0, 0);
1257         SSVAL(vwv+2, 0, TCONX_FLAG_EXTENDED_RESPONSE);
1258         SSVAL(vwv+3, 0, passlen);
1259
1260         if (passlen) {
1261                 bytes = (uint8_t *)talloc_memdup(talloc_tos(), pword, passlen);
1262         } else {
1263                 bytes = talloc_array(talloc_tos(), uint8_t, 0);
1264         }
1265
1266         /*
1267          * Add the sharename
1268          */
1269         tmp = talloc_asprintf_strupper_m(talloc_tos(), "\\\\%s\\%s",
1270                                          cli->desthost, share);
1271         if (tmp == NULL) {
1272                 TALLOC_FREE(bytes);
1273                 return NULL;
1274         }
1275         bytes = smb_bytes_push_str(bytes, cli_ucs2(cli), tmp, strlen(tmp)+1,
1276                                    NULL);
1277         TALLOC_FREE(tmp);
1278
1279         /*
1280          * Add the devicetype
1281          */
1282         tmp = talloc_strdup_upper(talloc_tos(), dev);
1283         if (tmp == NULL) {
1284                 TALLOC_FREE(bytes);
1285                 return NULL;
1286         }
1287         bytes = smb_bytes_push_str(bytes, false, tmp, strlen(tmp)+1, NULL);
1288         TALLOC_FREE(tmp);
1289
1290         if (bytes == NULL) {
1291                 return NULL;
1292         }
1293
1294         result = cli_request_send(mem_ctx, ev, cli, SMBtconX, 0,
1295                                   4, vwv, 0, talloc_get_size(bytes), bytes);
1296         TALLOC_FREE(bytes);
1297         return result;
1298
1299  access_denied:
1300         {
1301                 struct cli_request *state;
1302                 if (!async_req_setup(mem_ctx, &result, &state,
1303                                      struct cli_request)) {
1304                         goto fail;
1305                 }
1306                 if (async_post_ntstatus(result, ev, NT_STATUS_ACCESS_DENIED)) {
1307                         return result;
1308                 }
1309         }
1310  fail:
1311         TALLOC_FREE(result);
1312         return NULL;
1313 }
1314
1315 NTSTATUS cli_tcon_andx_recv(struct async_req *req)
1316 {
1317         struct cli_request *cli_req = talloc_get_type_abort(
1318                 req->private_data, struct cli_request);
1319         struct cli_state *cli = cli_req->cli;
1320         uint8_t wct;
1321         uint16_t *vwv;
1322         uint16_t num_bytes;
1323         uint8_t *bytes;
1324         NTSTATUS status;
1325
1326         if (async_req_is_nterror(req, &status)) {
1327                 return status;
1328         }
1329
1330         status = cli_pull_reply(req, &wct, &vwv, &num_bytes, &bytes);
1331         if (!NT_STATUS_IS_OK(status)) {
1332                 return status;
1333         }
1334
1335         clistr_pull(cli_req->inbuf, cli->dev, bytes, sizeof(fstring),
1336                     num_bytes, STR_TERMINATE|STR_ASCII);
1337
1338         if ((cli->protocol >= PROTOCOL_NT1) && (num_bytes == 3)) {
1339                 /* almost certainly win95 - enable bug fixes */
1340                 cli->win95 = True;
1341         }
1342
1343         /*
1344          * Make sure that we have the optional support 16-bit field. WCT > 2.
1345          * Avoids issues when connecting to Win9x boxes sharing files
1346          */
1347
1348         cli->dfsroot = false;
1349
1350         if ((wct > 2) && (cli->protocol >= PROTOCOL_LANMAN2)) {
1351                 cli->dfsroot = ((SVAL(vwv+2, 0) & SMB_SHARE_IN_DFS) != 0);
1352         }
1353
1354         cli->cnum = SVAL(cli_req->inbuf,smb_tid);
1355         return NT_STATUS_OK;
1356 }
1357
1358 NTSTATUS cli_tcon_andx(struct cli_state *cli, const char *share,
1359                        const char *dev, const char *pass, int passlen)
1360 {
1361         TALLOC_CTX *frame = talloc_stackframe();
1362         struct event_context *ev;
1363         struct async_req *req;
1364         NTSTATUS status;
1365
1366         if (cli->fd_event != NULL) {
1367                 /*
1368                  * Can't use sync call while an async call is in flight
1369                  */
1370                 status = NT_STATUS_INVALID_PARAMETER;
1371                 goto fail;
1372         }
1373
1374         ev = event_context_init(frame);
1375         if (ev == NULL) {
1376                 status = NT_STATUS_NO_MEMORY;
1377                 goto fail;
1378         }
1379
1380         req = cli_tcon_andx_send(frame, ev, cli, share, dev, pass, passlen);
1381         if (req == NULL) {
1382                 status = NT_STATUS_NO_MEMORY;
1383                 goto fail;
1384         }
1385
1386         while (req->state < ASYNC_REQ_DONE) {
1387                 event_loop_once(ev);
1388         }
1389
1390         status = cli_tcon_andx_recv(req);
1391  fail:
1392         TALLOC_FREE(frame);
1393         return status;
1394 }
1395
1396 /****************************************************************************
1397  Send a tree disconnect.
1398 ****************************************************************************/
1399
1400 bool cli_tdis(struct cli_state *cli)
1401 {
1402         memset(cli->outbuf,'\0',smb_size);
1403         cli_set_message(cli->outbuf,0,0,True);
1404         SCVAL(cli->outbuf,smb_com,SMBtdis);
1405         SSVAL(cli->outbuf,smb_tid,cli->cnum);
1406         cli_setup_packet(cli);
1407
1408         cli_send_smb(cli);
1409         if (!cli_receive_smb(cli))
1410                 return False;
1411
1412         if (cli_is_error(cli)) {
1413                 return False;
1414         }
1415
1416         cli->cnum = -1;
1417         return True;
1418 }
1419
1420 /****************************************************************************
1421  Send a negprot command.
1422 ****************************************************************************/
1423
1424 void cli_negprot_sendsync(struct cli_state *cli)
1425 {
1426         char *p;
1427         int numprots;
1428
1429         if (cli->protocol < PROTOCOL_NT1)
1430                 cli->use_spnego = False;
1431
1432         memset(cli->outbuf,'\0',smb_size);
1433
1434         /* setup the protocol strings */
1435         cli_set_message(cli->outbuf,0,0,True);
1436
1437         p = smb_buf(cli->outbuf);
1438         for (numprots=0; numprots < ARRAY_SIZE(prots); numprots++) {
1439                 if (prots[numprots].prot > cli->protocol) {
1440                         break;
1441                 }
1442                 *p++ = 2;
1443                 p += clistr_push(cli, p, prots[numprots].name, -1, STR_TERMINATE);
1444         }
1445
1446         SCVAL(cli->outbuf,smb_com,SMBnegprot);
1447         cli_setup_bcc(cli, p);
1448         cli_setup_packet(cli);
1449
1450         SCVAL(smb_buf(cli->outbuf),0,2);
1451
1452         cli_send_smb(cli);
1453 }
1454
1455 /****************************************************************************
1456  Send a negprot command.
1457 ****************************************************************************/
1458
1459 struct async_req *cli_negprot_send(TALLOC_CTX *mem_ctx,
1460                                    struct event_context *ev,
1461                                    struct cli_state *cli)
1462 {
1463         struct async_req *result;
1464         uint8_t *bytes = NULL;
1465         int numprots;
1466
1467         if (cli->protocol < PROTOCOL_NT1)
1468                 cli->use_spnego = False;
1469
1470         /* setup the protocol strings */
1471         for (numprots=0; numprots < ARRAY_SIZE(prots); numprots++) {
1472                 uint8_t c = 2;
1473                 if (prots[numprots].prot > cli->protocol) {
1474                         break;
1475                 }
1476                 bytes = (uint8_t *)talloc_append_blob(
1477                         talloc_tos(), bytes, data_blob_const(&c, sizeof(c)));
1478                 if (bytes == NULL) {
1479                         return NULL;
1480                 }
1481                 bytes = smb_bytes_push_str(bytes, false,
1482                                            prots[numprots].name,
1483                                            strlen(prots[numprots].name)+1,
1484                                            NULL);
1485                 if (bytes == NULL) {
1486                         return NULL;
1487                 }
1488         }
1489
1490         result = cli_request_send(mem_ctx, ev, cli, SMBnegprot, 0, 0, NULL, 0,
1491                                   talloc_get_size(bytes), bytes);
1492         TALLOC_FREE(bytes);
1493         return result;
1494 }
1495
1496 NTSTATUS cli_negprot_recv(struct async_req *req)
1497 {
1498         struct cli_request *cli_req = talloc_get_type_abort(
1499                 req->private_data, struct cli_request);
1500         struct cli_state *cli = cli_req->cli;
1501         uint8_t wct;
1502         uint16_t *vwv;
1503         uint16_t num_bytes;
1504         uint8_t *bytes;
1505         NTSTATUS status;
1506         uint16_t protnum;
1507
1508         if (async_req_is_nterror(req, &status)) {
1509                 return status;
1510         }
1511
1512         status = cli_pull_reply(req, &wct, &vwv, &num_bytes, &bytes);
1513         if (!NT_STATUS_IS_OK(status)) {
1514                 return status;
1515         }
1516
1517         protnum = SVAL(vwv, 0);
1518
1519         if ((protnum >= ARRAY_SIZE(prots))
1520             || (prots[protnum].prot > cli_req->cli->protocol)) {
1521                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1522         }
1523
1524         cli->protocol = prots[protnum].prot;
1525
1526         if ((cli->protocol < PROTOCOL_NT1) && cli->sign_info.mandatory_signing) {
1527                 DEBUG(0,("cli_negprot: SMB signing is mandatory and the selected protocol level doesn't support it.\n"));
1528                 return NT_STATUS_ACCESS_DENIED;
1529         }
1530
1531         if (cli->protocol >= PROTOCOL_NT1) {
1532                 struct timespec ts;
1533                 /* NT protocol */
1534                 cli->sec_mode = CVAL(vwv + 1, 0);
1535                 cli->max_mux = SVAL(vwv + 1, 1);
1536                 cli->max_xmit = IVAL(vwv + 3, 1);
1537                 cli->sesskey = IVAL(vwv + 7, 1);
1538                 cli->serverzone = SVALS(vwv + 15, 1);
1539                 cli->serverzone *= 60;
1540                 /* this time arrives in real GMT */
1541                 ts = interpret_long_date(((char *)(vwv+11))+1);
1542                 cli->servertime = ts.tv_sec;
1543                 cli->secblob = data_blob(bytes, num_bytes);
1544                 cli->capabilities = IVAL(vwv + 9, 1);
1545                 if (cli->capabilities & CAP_RAW_MODE) {
1546                         cli->readbraw_supported = True;
1547                         cli->writebraw_supported = True;
1548                 }
1549                 /* work out if they sent us a workgroup */
1550                 if (!(cli->capabilities & CAP_EXTENDED_SECURITY) &&
1551                     smb_buflen(cli->inbuf) > 8) {
1552                         clistr_pull(cli->inbuf, cli->server_domain,
1553                                     bytes+8, sizeof(cli->server_domain),
1554                                     num_bytes-8,
1555                                     STR_UNICODE|STR_NOALIGN);
1556                 }
1557
1558                 /*
1559                  * As signing is slow we only turn it on if either the client or
1560                  * the server require it. JRA.
1561                  */
1562
1563                 if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_REQUIRED) {
1564                         /* Fail if server says signing is mandatory and we don't want to support it. */
1565                         if (!cli->sign_info.allow_smb_signing) {
1566                                 DEBUG(0,("cli_negprot: SMB signing is mandatory and we have disabled it.\n"));
1567                                 return NT_STATUS_ACCESS_DENIED;
1568                         }
1569                         cli->sign_info.negotiated_smb_signing = True;
1570                         cli->sign_info.mandatory_signing = True;
1571                 } else if (cli->sign_info.mandatory_signing && cli->sign_info.allow_smb_signing) {
1572                         /* Fail if client says signing is mandatory and the server doesn't support it. */
1573                         if (!(cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED)) {
1574                                 DEBUG(1,("cli_negprot: SMB signing is mandatory and the server doesn't support it.\n"));
1575                                 return NT_STATUS_ACCESS_DENIED;
1576                         }
1577                         cli->sign_info.negotiated_smb_signing = True;
1578                         cli->sign_info.mandatory_signing = True;
1579                 } else if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED) {
1580                         cli->sign_info.negotiated_smb_signing = True;
1581                 }
1582
1583                 if (cli->capabilities & (CAP_LARGE_READX|CAP_LARGE_WRITEX)) {
1584                         SAFE_FREE(cli->outbuf);
1585                         SAFE_FREE(cli->inbuf);
1586                         cli->outbuf = (char *)SMB_MALLOC(CLI_SAMBA_MAX_LARGE_READX_SIZE+LARGE_WRITEX_HDR_SIZE+SAFETY_MARGIN);
1587                         cli->inbuf = (char *)SMB_MALLOC(CLI_SAMBA_MAX_LARGE_READX_SIZE+LARGE_WRITEX_HDR_SIZE+SAFETY_MARGIN);
1588                         cli->bufsize = CLI_SAMBA_MAX_LARGE_READX_SIZE + LARGE_WRITEX_HDR_SIZE;
1589                 }
1590
1591         } else if (cli->protocol >= PROTOCOL_LANMAN1) {
1592                 cli->use_spnego = False;
1593                 cli->sec_mode = SVAL(vwv + 1, 0);
1594                 cli->max_xmit = SVAL(vwv + 2, 0);
1595                 cli->max_mux = SVAL(vwv + 3, 0);
1596                 cli->sesskey = IVAL(vwv + 6, 0);
1597                 cli->serverzone = SVALS(vwv + 10, 0);
1598                 cli->serverzone *= 60;
1599                 /* this time is converted to GMT by make_unix_date */
1600                 cli->servertime = cli_make_unix_date(
1601                         cli, (char *)(vwv + 8));
1602                 cli->readbraw_supported = ((SVAL(vwv + 5, 0) & 0x1) != 0);
1603                 cli->writebraw_supported = ((SVAL(vwv + 5, 0) & 0x2) != 0);
1604                 cli->secblob = data_blob(bytes, num_bytes);
1605         } else {
1606                 /* the old core protocol */
1607                 cli->use_spnego = False;
1608                 cli->sec_mode = 0;
1609                 cli->serverzone = get_time_zone(time(NULL));
1610         }
1611
1612         cli->max_xmit = MIN(cli->max_xmit, CLI_BUFFER_SIZE);
1613
1614         /* a way to force ascii SMB */
1615         if (getenv("CLI_FORCE_ASCII"))
1616                 cli->capabilities &= ~CAP_UNICODE;
1617
1618         return NT_STATUS_OK;
1619 }
1620
1621 NTSTATUS cli_negprot(struct cli_state *cli)
1622 {
1623         TALLOC_CTX *frame = talloc_stackframe();
1624         struct event_context *ev;
1625         struct async_req *req;
1626         NTSTATUS status = NT_STATUS_NO_MEMORY;
1627
1628         if (cli->fd_event != NULL) {
1629                 /*
1630                  * Can't use sync call while an async call is in flight
1631                  */
1632                 cli_set_error(cli, NT_STATUS_INVALID_PARAMETER);
1633                 goto fail;
1634         }
1635
1636         ev = event_context_init(frame);
1637         if (ev == NULL) {
1638                 goto fail;
1639         }
1640
1641         req = cli_negprot_send(frame, ev, cli);
1642         if (req == NULL) {
1643                 goto fail;
1644         }
1645
1646         while (req->state < ASYNC_REQ_DONE) {
1647                 event_loop_once(ev);
1648         }
1649
1650         status = cli_negprot_recv(req);
1651  fail:
1652         TALLOC_FREE(frame);
1653         return status;
1654 }
1655
1656 /****************************************************************************
1657  Send a session request. See rfc1002.txt 4.3 and 4.3.2.
1658 ****************************************************************************/
1659
1660 bool cli_session_request(struct cli_state *cli,
1661                          struct nmb_name *calling, struct nmb_name *called)
1662 {
1663         char *p;
1664         int len = 4;
1665         char *tmp;
1666
1667         /* 445 doesn't have session request */
1668         if (cli->port == 445)
1669                 return True;
1670
1671         memcpy(&(cli->calling), calling, sizeof(*calling));
1672         memcpy(&(cli->called ), called , sizeof(*called ));
1673
1674         /* put in the destination name */
1675
1676         tmp = name_mangle(talloc_tos(), cli->called.name,
1677                           cli->called.name_type);
1678         if (tmp == NULL) {
1679                 return false;
1680         }
1681
1682         p = cli->outbuf+len;
1683         memcpy(p, tmp, name_len(tmp));
1684         len += name_len(tmp);
1685         TALLOC_FREE(tmp);
1686
1687         /* and my name */
1688
1689         tmp = name_mangle(talloc_tos(), cli->calling.name,
1690                           cli->calling.name_type);
1691         if (tmp == NULL) {
1692                 return false;
1693         }
1694
1695         p = cli->outbuf+len;
1696         memcpy(p, tmp, name_len(tmp));
1697         len += name_len(tmp);
1698         TALLOC_FREE(tmp);
1699
1700         /* send a session request (RFC 1002) */
1701         /* setup the packet length
1702          * Remove four bytes from the length count, since the length
1703          * field in the NBT Session Service header counts the number
1704          * of bytes which follow.  The cli_send_smb() function knows
1705          * about this and accounts for those four bytes.
1706          * CRH.
1707          */
1708         len -= 4;
1709         _smb_setlen(cli->outbuf,len);
1710         SCVAL(cli->outbuf,0,0x81);
1711
1712         cli_send_smb(cli);
1713         DEBUG(5,("Sent session request\n"));
1714
1715         if (!cli_receive_smb(cli))
1716                 return False;
1717
1718         if (CVAL(cli->inbuf,0) == 0x84) {
1719                 /* C. Hoch  9/14/95 Start */
1720                 /* For information, here is the response structure.
1721                  * We do the byte-twiddling to for portability.
1722                 struct RetargetResponse{
1723                 unsigned char type;
1724                 unsigned char flags;
1725                 int16 length;
1726                 int32 ip_addr;
1727                 int16 port;
1728                 };
1729                 */
1730                 uint16_t port = (CVAL(cli->inbuf,8)<<8)+CVAL(cli->inbuf,9);
1731                 struct in_addr dest_ip;
1732                 NTSTATUS status;
1733
1734                 /* SESSION RETARGET */
1735                 putip((char *)&dest_ip,cli->inbuf+4);
1736                 in_addr_to_sockaddr_storage(&cli->dest_ss, dest_ip);
1737
1738                 status = open_socket_out(&cli->dest_ss, port,
1739                                          LONG_CONNECT_TIMEOUT, &cli->fd);
1740                 if (!NT_STATUS_IS_OK(status)) {
1741                         return False;
1742                 }
1743
1744                 DEBUG(3,("Retargeted\n"));
1745
1746                 set_socket_options(cli->fd, lp_socket_options());
1747
1748                 /* Try again */
1749                 {
1750                         static int depth;
1751                         bool ret;
1752                         if (depth > 4) {
1753                                 DEBUG(0,("Retarget recursion - failing\n"));
1754                                 return False;
1755                         }
1756                         depth++;
1757                         ret = cli_session_request(cli, calling, called);
1758                         depth--;
1759                         return ret;
1760                 }
1761         } /* C. Hoch 9/14/95 End */
1762
1763         if (CVAL(cli->inbuf,0) != 0x82) {
1764                 /* This is the wrong place to put the error... JRA. */
1765                 cli->rap_error = CVAL(cli->inbuf,4);
1766                 return False;
1767         }
1768         return(True);
1769 }
1770
1771 static void smb_sock_connected(struct async_req *req)
1772 {
1773         int *pfd = (int *)req->async.priv;
1774         int fd;
1775         NTSTATUS status;
1776
1777         status = open_socket_out_defer_recv(req, &fd);
1778         if (NT_STATUS_IS_OK(status)) {
1779                 *pfd = fd;
1780         }
1781 }
1782
1783 static NTSTATUS open_smb_socket(const struct sockaddr_storage *pss,
1784                                 uint16_t *port, int timeout, int *pfd)
1785 {
1786         struct event_context *ev;
1787         struct async_req *r139, *r445;
1788         int fd139 = -1;
1789         int fd445 = -1;
1790         NTSTATUS status;
1791
1792         if (*port != 0) {
1793                 return open_socket_out(pss, *port, timeout, pfd);
1794         }
1795
1796         ev = event_context_init(talloc_tos());
1797         if (ev == NULL) {
1798                 return NT_STATUS_NO_MEMORY;
1799         }
1800
1801         r445 = open_socket_out_defer_send(ev, ev, timeval_set(0, 0),
1802                                           pss, 445, timeout);
1803         r139 = open_socket_out_defer_send(ev, ev, timeval_set(0, 3000),
1804                                           pss, 139, timeout);
1805         if ((r445 == NULL) || (r139 == NULL)) {
1806                 status = NT_STATUS_NO_MEMORY;
1807                 goto done;
1808         }
1809         r445->async.fn = smb_sock_connected;
1810         r445->async.priv = &fd445;
1811         r139->async.fn = smb_sock_connected;
1812         r139->async.priv = &fd139;
1813
1814         while ((fd139 == -1) && (r139->state < ASYNC_REQ_DONE)
1815                && (fd445 == -1) && (r445->state < ASYNC_REQ_DONE)) {
1816                 event_loop_once(ev);
1817         }
1818
1819         if ((fd139 != -1) && (fd445 != -1)) {
1820                 close(fd139);
1821                 fd139 = -1;
1822         }
1823
1824         if (fd445 != -1) {
1825                 *port = 445;
1826                 *pfd = fd445;
1827                 status = NT_STATUS_OK;
1828                 goto done;
1829         }
1830         if (fd139 != -1) {
1831                 *port = 139;
1832                 *pfd = fd139;
1833                 status = NT_STATUS_OK;
1834                 goto done;
1835         }
1836
1837         status = open_socket_out_defer_recv(r445, &fd445);
1838  done:
1839         TALLOC_FREE(ev);
1840         return status;
1841 }
1842
1843 /****************************************************************************
1844  Open the client sockets.
1845 ****************************************************************************/
1846
1847 NTSTATUS cli_connect(struct cli_state *cli,
1848                 const char *host,
1849                 struct sockaddr_storage *dest_ss)
1850
1851 {
1852         int name_type = 0x20;
1853         TALLOC_CTX *frame = talloc_stackframe();
1854         unsigned int num_addrs = 0;
1855         unsigned int i = 0;
1856         struct sockaddr_storage *ss_arr = NULL;
1857         char *p = NULL;
1858
1859         /* reasonable default hostname */
1860         if (!host) {
1861                 host = STAR_SMBSERVER;
1862         }
1863
1864         fstrcpy(cli->desthost, host);
1865
1866         /* allow hostnames of the form NAME#xx and do a netbios lookup */
1867         if ((p = strchr(cli->desthost, '#'))) {
1868                 name_type = strtol(p+1, NULL, 16);
1869                 *p = 0;
1870         }
1871
1872         if (!dest_ss || is_zero_addr((struct sockaddr *)dest_ss)) {
1873                 NTSTATUS status =resolve_name_list(frame,
1874                                         cli->desthost,
1875                                         name_type,
1876                                         &ss_arr,
1877                                         &num_addrs);
1878                 if (!NT_STATUS_IS_OK(status)) {
1879                         TALLOC_FREE(frame);
1880                         return NT_STATUS_BAD_NETWORK_NAME;
1881                 }
1882         } else {
1883                 num_addrs = 1;
1884                 ss_arr = TALLOC_P(frame, struct sockaddr_storage);
1885                 if (!ss_arr) {
1886                         TALLOC_FREE(frame);
1887                         return NT_STATUS_NO_MEMORY;
1888                 }
1889                 *ss_arr = *dest_ss;
1890         }
1891
1892         for (i = 0; i < num_addrs; i++) {
1893                 cli->dest_ss = ss_arr[i];
1894                 if (getenv("LIBSMB_PROG")) {
1895                         cli->fd = sock_exec(getenv("LIBSMB_PROG"));
1896                 } else {
1897                         uint16_t port = cli->port;
1898                         NTSTATUS status;
1899                         status = open_smb_socket(&cli->dest_ss, &port,
1900                                                  cli->timeout, &cli->fd);
1901                         if (NT_STATUS_IS_OK(status)) {
1902                                 cli->port = port;
1903                         }
1904                 }
1905                 if (cli->fd == -1) {
1906                         char addr[INET6_ADDRSTRLEN];
1907                         print_sockaddr(addr, sizeof(addr), &ss_arr[i]);
1908                         DEBUG(2,("Error connecting to %s (%s)\n",
1909                                  dest_ss?addr:host,strerror(errno)));
1910                 } else {
1911                         /* Exit from loop on first connection. */
1912                         break;
1913                 }
1914         }
1915
1916         if (cli->fd == -1) {
1917                 TALLOC_FREE(frame);
1918                 return map_nt_error_from_unix(errno);
1919         }
1920
1921         if (dest_ss) {
1922                 *dest_ss = cli->dest_ss;
1923         }
1924
1925         set_socket_options(cli->fd, lp_socket_options());
1926
1927         TALLOC_FREE(frame);
1928         return NT_STATUS_OK;
1929 }
1930
1931 /**
1932    establishes a connection to after the negprot.
1933    @param output_cli A fully initialised cli structure, non-null only on success
1934    @param dest_host The netbios name of the remote host
1935    @param dest_ss (optional) The the destination IP, NULL for name based lookup
1936    @param port (optional) The destination port (0 for default)
1937    @param retry bool. Did this connection fail with a retryable error ?
1938
1939 */
1940 NTSTATUS cli_start_connection(struct cli_state **output_cli,
1941                               const char *my_name,
1942                               const char *dest_host,
1943                               struct sockaddr_storage *dest_ss, int port,
1944                               int signing_state, int flags,
1945                               bool *retry)
1946 {
1947         NTSTATUS nt_status;
1948         struct nmb_name calling;
1949         struct nmb_name called;
1950         struct cli_state *cli;
1951         struct sockaddr_storage ss;
1952
1953         if (retry)
1954                 *retry = False;
1955
1956         if (!my_name)
1957                 my_name = global_myname();
1958
1959         if (!(cli = cli_initialise_ex(signing_state))) {
1960                 return NT_STATUS_NO_MEMORY;
1961         }
1962
1963         make_nmb_name(&calling, my_name, 0x0);
1964         make_nmb_name(&called , dest_host, 0x20);
1965
1966         cli_set_port(cli, port);
1967         cli_set_timeout(cli, 10000); /* 10 seconds. */
1968
1969         if (dest_ss) {
1970                 ss = *dest_ss;
1971         } else {
1972                 zero_sockaddr(&ss);
1973         }
1974
1975 again:
1976
1977         DEBUG(3,("Connecting to host=%s\n", dest_host));
1978
1979         nt_status = cli_connect(cli, dest_host, &ss);
1980         if (!NT_STATUS_IS_OK(nt_status)) {
1981                 char addr[INET6_ADDRSTRLEN];
1982                 print_sockaddr(addr, sizeof(addr), &ss);
1983                 DEBUG(1,("cli_start_connection: failed to connect to %s (%s). Error %s\n",
1984                          nmb_namestr(&called), addr, nt_errstr(nt_status) ));
1985                 cli_shutdown(cli);
1986                 return nt_status;
1987         }
1988
1989         if (retry)
1990                 *retry = True;
1991
1992         if (!cli_session_request(cli, &calling, &called)) {
1993                 char *p;
1994                 DEBUG(1,("session request to %s failed (%s)\n",
1995                          called.name, cli_errstr(cli)));
1996                 if ((p=strchr(called.name, '.')) && !is_ipaddress(called.name)) {
1997                         *p = 0;
1998                         goto again;
1999                 }
2000                 if (strcmp(called.name, STAR_SMBSERVER)) {
2001                         make_nmb_name(&called , STAR_SMBSERVER, 0x20);
2002                         goto again;
2003                 }
2004                 return NT_STATUS_BAD_NETWORK_NAME;
2005         }
2006
2007         if (flags & CLI_FULL_CONNECTION_DONT_SPNEGO)
2008                 cli->use_spnego = False;
2009         else if (flags & CLI_FULL_CONNECTION_USE_KERBEROS)
2010                 cli->use_kerberos = True;
2011
2012         if ((flags & CLI_FULL_CONNECTION_FALLBACK_AFTER_KERBEROS) &&
2013              cli->use_kerberos) {
2014                 cli->fallback_after_kerberos = true;
2015         }
2016
2017         nt_status = cli_negprot(cli);
2018         if (!NT_STATUS_IS_OK(nt_status)) {
2019                 DEBUG(1, ("failed negprot: %s\n", nt_errstr(nt_status)));
2020                 cli_shutdown(cli);
2021                 return nt_status;
2022         }
2023
2024         *output_cli = cli;
2025         return NT_STATUS_OK;
2026 }
2027
2028
2029 /**
2030    establishes a connection right up to doing tconX, password specified.
2031    @param output_cli A fully initialised cli structure, non-null only on success
2032    @param dest_host The netbios name of the remote host
2033    @param dest_ip (optional) The the destination IP, NULL for name based lookup
2034    @param port (optional) The destination port (0 for default)
2035    @param service (optional) The share to make the connection to.  Should be 'unqualified' in any way.
2036    @param service_type The 'type' of serivice.
2037    @param user Username, unix string
2038    @param domain User's domain
2039    @param password User's password, unencrypted unix string.
2040    @param retry bool. Did this connection fail with a retryable error ?
2041 */
2042
2043 NTSTATUS cli_full_connection(struct cli_state **output_cli,
2044                              const char *my_name,
2045                              const char *dest_host,
2046                              struct sockaddr_storage *dest_ss, int port,
2047                              const char *service, const char *service_type,
2048                              const char *user, const char *domain,
2049                              const char *password, int flags,
2050                              int signing_state,
2051                              bool *retry)
2052 {
2053         NTSTATUS nt_status;
2054         struct cli_state *cli = NULL;
2055         int pw_len = password ? strlen(password)+1 : 0;
2056
2057         *output_cli = NULL;
2058
2059         if (password == NULL) {
2060                 password = "";
2061         }
2062
2063         nt_status = cli_start_connection(&cli, my_name, dest_host,
2064                                          dest_ss, port, signing_state,
2065                                          flags, retry);
2066
2067         if (!NT_STATUS_IS_OK(nt_status)) {
2068                 return nt_status;
2069         }
2070
2071         nt_status = cli_session_setup(cli, user, password, pw_len, password,
2072                                       pw_len, domain);
2073         if (!NT_STATUS_IS_OK(nt_status)) {
2074
2075                 if (!(flags & CLI_FULL_CONNECTION_ANONYMOUS_FALLBACK)) {
2076                         DEBUG(1,("failed session setup with %s\n",
2077                                  nt_errstr(nt_status)));
2078                         cli_shutdown(cli);
2079                         return nt_status;
2080                 }
2081
2082                 nt_status = cli_session_setup(cli, "", "", 0, "", 0, domain);
2083                 if (!NT_STATUS_IS_OK(nt_status)) {
2084                         DEBUG(1,("anonymous failed session setup with %s\n",
2085                                  nt_errstr(nt_status)));
2086                         cli_shutdown(cli);
2087                         return nt_status;
2088                 }
2089         }
2090
2091         if (service) {
2092                 nt_status = cli_tcon_andx(cli, service, service_type, password,
2093                                           pw_len);
2094                 if (!NT_STATUS_IS_OK(nt_status)) {
2095                         DEBUG(1,("failed tcon_X with %s\n", nt_errstr(nt_status)));
2096                         cli_shutdown(cli);
2097                         if (NT_STATUS_IS_OK(nt_status)) {
2098                                 nt_status = NT_STATUS_UNSUCCESSFUL;
2099                         }
2100                         return nt_status;
2101                 }
2102         }
2103
2104         cli_init_creds(cli, user, domain, password);
2105
2106         *output_cli = cli;
2107         return NT_STATUS_OK;
2108 }
2109
2110 /****************************************************************************
2111  Attempt a NetBIOS session request, falling back to *SMBSERVER if needed.
2112 ****************************************************************************/
2113
2114 bool attempt_netbios_session_request(struct cli_state **ppcli, const char *srchost, const char *desthost,
2115                                      struct sockaddr_storage *pdest_ss)
2116 {
2117         struct nmb_name calling, called;
2118
2119         make_nmb_name(&calling, srchost, 0x0);
2120
2121         /*
2122          * If the called name is an IP address
2123          * then use *SMBSERVER immediately.
2124          */
2125
2126         if(is_ipaddress(desthost)) {
2127                 make_nmb_name(&called, STAR_SMBSERVER, 0x20);
2128         } else {
2129                 make_nmb_name(&called, desthost, 0x20);
2130         }
2131
2132         if (!cli_session_request(*ppcli, &calling, &called)) {
2133                 NTSTATUS status;
2134                 struct nmb_name smbservername;
2135
2136                 make_nmb_name(&smbservername, STAR_SMBSERVER, 0x20);
2137
2138                 /*
2139                  * If the name wasn't *SMBSERVER then
2140                  * try with *SMBSERVER if the first name fails.
2141                  */
2142
2143                 if (nmb_name_equal(&called, &smbservername)) {
2144
2145                         /*
2146                          * The name used was *SMBSERVER, don't bother with another name.
2147                          */
2148
2149                         DEBUG(0,("attempt_netbios_session_request: %s rejected the session for name *SMBSERVER \
2150 with error %s.\n", desthost, cli_errstr(*ppcli) ));
2151                         return False;
2152                 }
2153
2154                 /* Try again... */
2155                 cli_shutdown(*ppcli);
2156
2157                 *ppcli = cli_initialise();
2158                 if (!*ppcli) {
2159                         /* Out of memory... */
2160                         return False;
2161                 }
2162
2163                 status = cli_connect(*ppcli, desthost, pdest_ss);
2164                 if (!NT_STATUS_IS_OK(status) ||
2165                                 !cli_session_request(*ppcli, &calling, &smbservername)) {
2166                         DEBUG(0,("attempt_netbios_session_request: %s rejected the session for \
2167 name *SMBSERVER with error %s\n", desthost, cli_errstr(*ppcli) ));
2168                         return False;
2169                 }
2170         }
2171
2172         return True;
2173 }
2174
2175 /****************************************************************************
2176  Send an old style tcon.
2177 ****************************************************************************/
2178 NTSTATUS cli_raw_tcon(struct cli_state *cli,
2179                       const char *service, const char *pass, const char *dev,
2180                       uint16 *max_xmit, uint16 *tid)
2181 {
2182         char *p;
2183
2184         if (!lp_client_plaintext_auth() && (*pass)) {
2185                 DEBUG(1, ("Server requested plaintext password but 'client "
2186                           "plaintext auth' is disabled\n"));
2187                 return NT_STATUS_ACCESS_DENIED;
2188         }
2189
2190         memset(cli->outbuf,'\0',smb_size);
2191         memset(cli->inbuf,'\0',smb_size);
2192
2193         cli_set_message(cli->outbuf, 0, 0, True);
2194         SCVAL(cli->outbuf,smb_com,SMBtcon);
2195         cli_setup_packet(cli);
2196
2197         p = smb_buf(cli->outbuf);
2198         *p++ = 4; p += clistr_push(cli, p, service, -1, STR_TERMINATE | STR_NOALIGN);
2199         *p++ = 4; p += clistr_push(cli, p, pass, -1, STR_TERMINATE | STR_NOALIGN);
2200         *p++ = 4; p += clistr_push(cli, p, dev, -1, STR_TERMINATE | STR_NOALIGN);
2201
2202         cli_setup_bcc(cli, p);
2203
2204         cli_send_smb(cli);
2205         if (!cli_receive_smb(cli)) {
2206                 return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
2207         }
2208
2209         if (cli_is_error(cli)) {
2210                 return cli_nt_error(cli);
2211         }
2212
2213         *max_xmit = SVAL(cli->inbuf, smb_vwv0);
2214         *tid = SVAL(cli->inbuf, smb_vwv1);
2215
2216         return NT_STATUS_OK;
2217 }
2218
2219 /* Return a cli_state pointing at the IPC$ share for the given server */
2220
2221 struct cli_state *get_ipc_connect(char *server,
2222                                 struct sockaddr_storage *server_ss,
2223                                 const struct user_auth_info *user_info)
2224 {
2225         struct cli_state *cli;
2226         NTSTATUS nt_status;
2227         uint32_t flags = CLI_FULL_CONNECTION_ANONYMOUS_FALLBACK;
2228
2229         if (user_info->use_kerberos) {
2230                 flags |= CLI_FULL_CONNECTION_USE_KERBEROS;
2231         }
2232
2233         nt_status = cli_full_connection(&cli, NULL, server, server_ss, 0, "IPC$", "IPC",
2234                                         user_info->username ? user_info->username : "",
2235                                         lp_workgroup(),
2236                                         user_info->password ? user_info->password : "",
2237                                         flags,
2238                                         Undefined, NULL);
2239
2240         if (NT_STATUS_IS_OK(nt_status)) {
2241                 return cli;
2242         } else if (is_ipaddress(server)) {
2243             /* windows 9* needs a correct NMB name for connections */
2244             fstring remote_name;
2245
2246             if (name_status_find("*", 0, 0, server_ss, remote_name)) {
2247                 cli = get_ipc_connect(remote_name, server_ss, user_info);
2248                 if (cli)
2249                     return cli;
2250             }
2251         }
2252         return NULL;
2253 }
2254
2255 /*
2256  * Given the IP address of a master browser on the network, return its
2257  * workgroup and connect to it.
2258  *
2259  * This function is provided to allow additional processing beyond what
2260  * get_ipc_connect_master_ip_bcast() does, e.g. to retrieve the list of master
2261  * browsers and obtain each master browsers' list of domains (in case the
2262  * first master browser is recently on the network and has not yet
2263  * synchronized with other master browsers and therefore does not yet have the
2264  * entire network browse list)
2265  */
2266
2267 struct cli_state *get_ipc_connect_master_ip(TALLOC_CTX *ctx,
2268                                 struct ip_service *mb_ip,
2269                                 const struct user_auth_info *user_info,
2270                                 char **pp_workgroup_out)
2271 {
2272         char addr[INET6_ADDRSTRLEN];
2273         fstring name;
2274         struct cli_state *cli;
2275         struct sockaddr_storage server_ss;
2276
2277         *pp_workgroup_out = NULL;
2278
2279         print_sockaddr(addr, sizeof(addr), &mb_ip->ss);
2280         DEBUG(99, ("Looking up name of master browser %s\n",
2281                    addr));
2282
2283         /*
2284          * Do a name status query to find out the name of the master browser.
2285          * We use <01><02>__MSBROWSE__<02>#01 if *#00 fails because a domain
2286          * master browser will not respond to a wildcard query (or, at least,
2287          * an NT4 server acting as the domain master browser will not).
2288          *
2289          * We might be able to use ONLY the query on MSBROWSE, but that's not
2290          * yet been tested with all Windows versions, so until it is, leave
2291          * the original wildcard query as the first choice and fall back to
2292          * MSBROWSE if the wildcard query fails.
2293          */
2294         if (!name_status_find("*", 0, 0x1d, &mb_ip->ss, name) &&
2295             !name_status_find(MSBROWSE, 1, 0x1d, &mb_ip->ss, name)) {
2296
2297                 DEBUG(99, ("Could not retrieve name status for %s\n",
2298                            addr));
2299                 return NULL;
2300         }
2301
2302         if (!find_master_ip(name, &server_ss)) {
2303                 DEBUG(99, ("Could not find master ip for %s\n", name));
2304                 return NULL;
2305         }
2306
2307         *pp_workgroup_out = talloc_strdup(ctx, name);
2308
2309         DEBUG(4, ("found master browser %s, %s\n", name, addr));
2310
2311         print_sockaddr(addr, sizeof(addr), &server_ss);
2312         cli = get_ipc_connect(addr, &server_ss, user_info);
2313
2314         return cli;
2315 }
2316
2317 /*
2318  * Return the IP address and workgroup of a master browser on the network, and
2319  * connect to it.
2320  */
2321
2322 struct cli_state *get_ipc_connect_master_ip_bcast(TALLOC_CTX *ctx,
2323                                         const struct user_auth_info *user_info,
2324                                         char **pp_workgroup_out)
2325 {
2326         struct ip_service *ip_list;
2327         struct cli_state *cli;
2328         int i, count;
2329
2330         *pp_workgroup_out = NULL;
2331
2332         DEBUG(99, ("Do broadcast lookup for workgroups on local network\n"));
2333
2334         /* Go looking for workgroups by broadcasting on the local network */
2335
2336         if (!NT_STATUS_IS_OK(name_resolve_bcast(MSBROWSE, 1, &ip_list,
2337                                                 &count))) {
2338                 DEBUG(99, ("No master browsers responded\n"));
2339                 return False;
2340         }
2341
2342         for (i = 0; i < count; i++) {
2343                 char addr[INET6_ADDRSTRLEN];
2344                 print_sockaddr(addr, sizeof(addr), &ip_list[i].ss);
2345                 DEBUG(99, ("Found master browser %s\n", addr));
2346
2347                 cli = get_ipc_connect_master_ip(ctx, &ip_list[i],
2348                                 user_info, pp_workgroup_out);
2349                 if (cli)
2350                         return(cli);
2351         }
2352
2353         return NULL;
2354 }