source/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 2 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, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22 #define NO_SYSLOG
  23
  24 #include "includes.h"
  25
  26
  27 static const struct {
  28         int prot;
  29         const char *name;
  30 } prots[] = {
  31         {PROTOCOL_CORE,"PC NETWORK PROGRAM 1.0"},
  32         {PROTOCOL_COREPLUS,"MICROSOFT NETWORKS 1.03"},
  33         {PROTOCOL_LANMAN1,"MICROSOFT NETWORKS 3.0"},
  34         {PROTOCOL_LANMAN1,"LANMAN1.0"},
  35         {PROTOCOL_LANMAN2,"LM1.2X002"},
  36         {PROTOCOL_LANMAN2,"DOS LANMAN2.1"},
  37         {PROTOCOL_LANMAN2,"Samba"},
  38         {PROTOCOL_NT1,"NT LANMAN 1.0"},
  39         {PROTOCOL_NT1,"NT LM 0.12"},
  40         {-1,NULL}
  41 };
  42
  43 /**
  44  * Set the user session key for a connection
  45  * @param cli The cli structure to add it too
  46  * @param session_key The session key used.  (A copy of this is taken for the cli struct)
  47  *
  48  */
  49
  50 static void cli_set_session_key (struct cli_state *cli, const DATA_BLOB session_key)
  51 {
  52         cli->user_session_key = data_blob(session_key.data, session_key.length);
  53 }
  54
  55 /****************************************************************************
  56  Do an old lanman2 style session setup.
  57 ****************************************************************************/
  58
  59 static BOOL cli_session_setup_lanman2(struct cli_state *cli, const char *user,
  60                                       const char *pass, size_t passlen, const char *workgroup)
  61 {
  62         DATA_BLOB session_key = data_blob(NULL, 0);
  63         DATA_BLOB lm_response = data_blob(NULL, 0);
  64         fstring pword;
  65         char *p;
  66
  67         if (passlen > sizeof(pword)-1)
  68                 return False;
  69
  70         /* LANMAN servers predate NT status codes and Unicode and ignore those
  71            smb flags so we must disable the corresponding default capabilities
  72            that would otherwise cause the Unicode and NT Status flags to be
  73            set (and even returned by the server) */
  74
  75         cli->capabilities &= ~(CAP_UNICODE | CAP_STATUS32);
  76
  77         /* if in share level security then don't send a password now */
  78         if (!(cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL))
  79                 passlen = 0;
  80
  81         if (passlen > 0 && (cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && passlen != 24) {
  82                 /* Encrypted mode needed, and non encrypted password supplied. */
  83                 lm_response = data_blob(NULL, 24);
  84                 if (!SMBencrypt(pass, cli->secblob.data,(uchar *)lm_response.data)) {
  85                         DEBUG(1, ("Password is > 14 chars in length, and is therefore incompatible with Lanman authentication\n"));
  86                         return False;
  87                 }
  88         } else if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && passlen == 24) {
  89                 /* Encrypted mode needed, and encrypted password supplied. */
  90                 lm_response = data_blob(pass, passlen);
  91         } else if (passlen > 0) {
  92                 /* Plaintext mode needed, assume plaintext supplied. */
  93                 passlen = clistr_push(cli, pword, pass, sizeof(pword), STR_TERMINATE);
  94                 lm_response = data_blob(pass, passlen);
  95         }
  96
  97         /* send a session setup command */
  98         memset(cli->outbuf,'\0',smb_size);
  99         set_message(cli->outbuf,10, 0, True);
 100         SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
 101         cli_setup_packet(cli);
 102
 103         SCVAL(cli->outbuf,smb_vwv0,0xFF);
 104         SSVAL(cli->outbuf,smb_vwv2,cli->max_xmit);
 105         SSVAL(cli->outbuf,smb_vwv3,2);
 106         SSVAL(cli->outbuf,smb_vwv4,1);
 107         SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
 108         SSVAL(cli->outbuf,smb_vwv7,lm_response.length);
 109
 110         p = smb_buf(cli->outbuf);
 111         memcpy(p,lm_response.data,lm_response.length);
 112         p += lm_response.length;
 113         p += clistr_push(cli, p, user, -1, STR_TERMINATE|STR_UPPER);
 114         p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE|STR_UPPER);
 115         p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
 116         p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
 117         cli_setup_bcc(cli, p);
 118
 119         cli_send_smb(cli);
 120         if (!cli_receive_smb(cli))
 121                 return False;
 122
 123         show_msg(cli->inbuf);
 124
 125         if (cli_is_error(cli))
 126                 return False;
 127
 128         /* use the returned vuid from now on */
 129         cli->vuid = SVAL(cli->inbuf,smb_uid);
 130         fstrcpy(cli->user_name, user);
 131
 132         if (session_key.data) {
 133                 /* Have plaintext orginal */
 134                 cli_set_session_key(cli, session_key);
 135         }
 136
 137         return True;
 138 }
 139
 140 /****************************************************************************
 141  Work out suitable capabilities to offer the server.
 142 ****************************************************************************/
 143
 144 static uint32 cli_session_setup_capabilities(struct cli_state *cli)
 145 {
 146         uint32 capabilities = CAP_NT_SMBS;
 147
 148         if (!cli->force_dos_errors)
 149                 capabilities |= CAP_STATUS32;
 150
 151         if (cli->use_level_II_oplocks)
 152                 capabilities |= CAP_LEVEL_II_OPLOCKS;
 153
 154         capabilities |= (cli->capabilities & (CAP_UNICODE|CAP_LARGE_FILES|CAP_LARGE_READX|CAP_LARGE_WRITEX|CAP_DFS));
 155         return capabilities;
 156 }
 157
 158 /****************************************************************************
 159  Do a NT1 guest session setup.
 160 ****************************************************************************/
 161
 162 static BOOL cli_session_setup_guest(struct cli_state *cli)
 163 {
 164         char *p;
 165         uint32 capabilities = cli_session_setup_capabilities(cli);
 166
 167         set_message(cli->outbuf,13,0,True);
 168         SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
 169         cli_setup_packet(cli);
 170
 171         SCVAL(cli->outbuf,smb_vwv0,0xFF);
 172         SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
 173         SSVAL(cli->outbuf,smb_vwv3,2);
 174         SSVAL(cli->outbuf,smb_vwv4,cli->pid);
 175         SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
 176         SSVAL(cli->outbuf,smb_vwv7,0);
 177         SSVAL(cli->outbuf,smb_vwv8,0);
 178         SIVAL(cli->outbuf,smb_vwv11,capabilities);
 179         p = smb_buf(cli->outbuf);
 180         p += clistr_push(cli, p, "", -1, STR_TERMINATE); /* username */
 181         p += clistr_push(cli, p, "", -1, STR_TERMINATE); /* workgroup */
 182         p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
 183         p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
 184         cli_setup_bcc(cli, p);
 185
 186         cli_send_smb(cli);
 187         if (!cli_receive_smb(cli))
 188               return False;
 189
 190         show_msg(cli->inbuf);
 191
 192         if (cli_is_error(cli))
 193                 return False;
 194
 195         cli->vuid = SVAL(cli->inbuf,smb_uid);
 196
 197         p = smb_buf(cli->inbuf);
 198         p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
 199         p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
 200         p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
 201
 202         fstrcpy(cli->user_name, "");
 203
 204         return True;
 205 }
 206
 207 /****************************************************************************
 208  Do a NT1 plaintext session setup.
 209 ****************************************************************************/
 210
 211 static BOOL cli_session_setup_plaintext(struct cli_state *cli, const char *user,
 212                                         const char *pass, const char *workgroup)
 213 {
 214         uint32 capabilities = cli_session_setup_capabilities(cli);
 215         char *p;
 216         fstring lanman;
 217
 218         fstr_sprintf( lanman, "Samba %s", SAMBA_VERSION_STRING);
 219
 220         set_message(cli->outbuf,13,0,True);
 221         SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
 222         cli_setup_packet(cli);
 223
 224         SCVAL(cli->outbuf,smb_vwv0,0xFF);
 225         SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
 226         SSVAL(cli->outbuf,smb_vwv3,2);
 227         SSVAL(cli->outbuf,smb_vwv4,cli->pid);
 228         SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
 229         SSVAL(cli->outbuf,smb_vwv8,0);
 230         SIVAL(cli->outbuf,smb_vwv11,capabilities);
 231         p = smb_buf(cli->outbuf);
 232
 233         /* check wether to send the ASCII or UNICODE version of the password */
 234
 235         if ( (capabilities & CAP_UNICODE) == 0 ) {
 236                 p += clistr_push(cli, p, pass, -1, STR_TERMINATE); /* password */
 237                 SSVAL(cli->outbuf,smb_vwv7,PTR_DIFF(p, smb_buf(cli->outbuf)));
 238         }
 239         else {
 240                 p += clistr_push(cli, p, pass, -1, STR_UNICODE|STR_TERMINATE); /* unicode password */
 241                 SSVAL(cli->outbuf,smb_vwv8,PTR_DIFF(p, smb_buf(cli->outbuf)));
 242         }
 243
 244         p += clistr_push(cli, p, user, -1, STR_TERMINATE); /* username */
 245         p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE); /* workgroup */
 246         p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
 247         p += clistr_push(cli, p, lanman, -1, STR_TERMINATE);
 248         cli_setup_bcc(cli, p);
 249
 250         cli_send_smb(cli);
 251         if (!cli_receive_smb(cli))
 252               return False;
 253
 254         show_msg(cli->inbuf);
 255
 256         if (cli_is_error(cli))
 257                 return False;
 258
 259         cli->vuid = SVAL(cli->inbuf,smb_uid);
 260         p = smb_buf(cli->inbuf);
 261         p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
 262         p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
 263         p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
 264         fstrcpy(cli->user_name, user);
 265
 266         return True;
 267 }
 268
 269 /****************************************************************************
 270    do a NT1 NTLM/LM encrypted session setup - for when extended security
 271    is not negotiated.
 272    @param cli client state to create do session setup on
 273    @param user username
 274    @param pass *either* cleartext password (passlen !=24) or LM response.
 275    @param ntpass NT response, implies ntpasslen >=24, implies pass is not clear
 276    @param workgroup The user's domain.
 277 ****************************************************************************/
 278
 279 static BOOL cli_session_setup_nt1(struct cli_state *cli, const char *user,
 280                                   const char *pass, size_t passlen,
 281                                   const char *ntpass, size_t ntpasslen,
 282                                   const char *workgroup)
 283 {
 284         uint32 capabilities = cli_session_setup_capabilities(cli);
 285         DATA_BLOB lm_response = data_blob(NULL, 0);
 286         DATA_BLOB nt_response = data_blob(NULL, 0);
 287         DATA_BLOB session_key = data_blob(NULL, 0);
 288         BOOL ret = False;
 289         char *p;
 290
 291         if (passlen == 0) {
 292                 /* do nothing - guest login */
 293         } else if (passlen != 24) {
 294                 if (lp_client_ntlmv2_auth()) {
 295                         DATA_BLOB server_chal;
 296                         DATA_BLOB names_blob;
 297                         server_chal = data_blob(cli->secblob.data, MIN(cli->secblob.length, 8));
 298
 299                         /* note that the 'workgroup' here is a best guess - we don't know
 300                            the server's domain at this point.  The 'server name' is also
 301                            dodgy...
 302                         */
 303                         names_blob = NTLMv2_generate_names_blob(cli->called.name, workgroup);
 304
 305                         if (!SMBNTLMv2encrypt(user, workgroup, pass, &server_chal,
 306                                               &names_blob,
 307                                               &lm_response, &nt_response, &session_key)) {
 308                                 data_blob_free(&names_blob);
 309                                 data_blob_free(&server_chal);
 310                                 return False;
 311                         }
 312                         data_blob_free(&names_blob);
 313                         data_blob_free(&server_chal);
 314
 315                 } else {
 316                         uchar nt_hash[16];
 317                         E_md4hash(pass, nt_hash);
 318
 319 #ifdef LANMAN_ONLY
 320                         nt_response = data_blob(NULL, 0);
 321 #else
 322                         nt_response = data_blob(NULL, 24);
 323                         SMBNTencrypt(pass,cli->secblob.data,nt_response.data);
 324 #endif
 325                         /* non encrypted password supplied. Ignore ntpass. */
 326                         if (lp_client_lanman_auth()) {
 327                                 lm_response = data_blob(NULL, 24);
 328                                 if (!SMBencrypt(pass,cli->secblob.data, lm_response.data)) {
 329                                         /* Oops, the LM response is invalid, just put
 330                                            the NT response there instead */
 331                                         data_blob_free(&lm_response);
 332                                         lm_response = data_blob(nt_response.data, nt_response.length);
 333                                 }
 334                         } else {
 335                                 /* LM disabled, place NT# in LM field instead */
 336                                 lm_response = data_blob(nt_response.data, nt_response.length);
 337                         }
 338
 339                         session_key = data_blob(NULL, 16);
 340 #ifdef LANMAN_ONLY
 341                         E_deshash(pass, session_key.data);
 342                         memset(&session_key.data[8], '\0', 8);
 343 #else
 344                         SMBsesskeygen_ntv1(nt_hash, NULL, session_key.data);
 345 #endif
 346                 }
 347 #ifdef LANMAN_ONLY
 348                 cli_simple_set_signing(cli, session_key, lm_response);
 349 #else
 350                 cli_simple_set_signing(cli, session_key, nt_response);
 351 #endif
 352         } else {
 353                 /* pre-encrypted password supplied.  Only used for
 354                    security=server, can't do
 355                    signing because we don't have original key */
 356
 357                 lm_response = data_blob(pass, passlen);
 358                 nt_response = data_blob(ntpass, ntpasslen);
 359         }
 360
 361         /* send a session setup command */
 362         memset(cli->outbuf,'\0',smb_size);
 363
 364         set_message(cli->outbuf,13,0,True);
 365         SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
 366         cli_setup_packet(cli);
 367
 368         SCVAL(cli->outbuf,smb_vwv0,0xFF);
 369         SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
 370         SSVAL(cli->outbuf,smb_vwv3,2);
 371         SSVAL(cli->outbuf,smb_vwv4,cli->pid);
 372         SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
 373         SSVAL(cli->outbuf,smb_vwv7,lm_response.length);
 374         SSVAL(cli->outbuf,smb_vwv8,nt_response.length);
 375         SIVAL(cli->outbuf,smb_vwv11,capabilities);
 376         p = smb_buf(cli->outbuf);
 377         if (lm_response.length) {
 378                 memcpy(p,lm_response.data, lm_response.length); p += lm_response.length;
 379         }
 380         if (nt_response.length) {
 381                 memcpy(p,nt_response.data, nt_response.length); p += nt_response.length;
 382         }
 383         p += clistr_push(cli, p, user, -1, STR_TERMINATE);
 384
 385         /* Upper case here might help some NTLMv2 implementations */
 386         p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE|STR_UPPER);
 387         p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
 388         p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
 389         cli_setup_bcc(cli, p);
 390
 391         if (!cli_send_smb(cli) || !cli_receive_smb(cli)) {
 392                 ret = False;
 393                 goto end;
 394         }
 395
 396         /* show_msg(cli->inbuf); */
 397
 398         if (cli_is_error(cli)) {
 399                 ret = False;
 400                 goto end;
 401         }
 402
 403         /* use the returned vuid from now on */
 404         cli->vuid = SVAL(cli->inbuf,smb_uid);
 405
 406         p = smb_buf(cli->inbuf);
 407         p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
 408         p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
 409         p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
 410
 411         fstrcpy(cli->user_name, user);
 412
 413         if (session_key.data) {
 414                 /* Have plaintext orginal */
 415                 cli_set_session_key(cli, session_key);
 416         }
 417
 418         ret = True;
 419 end:
 420         data_blob_free(&lm_response);
 421         data_blob_free(&nt_response);
 422         data_blob_free(&session_key);
 423         return ret;
 424 }
 425
 426 /****************************************************************************
 427  Send a extended security session setup blob
 428 ****************************************************************************/
 429
 430 static BOOL cli_session_setup_blob_send(struct cli_state *cli, DATA_BLOB blob)
 431 {
 432         uint32 capabilities = cli_session_setup_capabilities(cli);
 433         char *p;
 434
 435         capabilities |= CAP_EXTENDED_SECURITY;
 436
 437         /* send a session setup command */
 438         memset(cli->outbuf,'\0',smb_size);
 439
 440         set_message(cli->outbuf,12,0,True);
 441         SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
 442
 443         cli_setup_packet(cli);
 444
 445         SCVAL(cli->outbuf,smb_vwv0,0xFF);
 446         SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
 447         SSVAL(cli->outbuf,smb_vwv3,2);
 448         SSVAL(cli->outbuf,smb_vwv4,1);
 449         SIVAL(cli->outbuf,smb_vwv5,0);
 450         SSVAL(cli->outbuf,smb_vwv7,blob.length);
 451         SIVAL(cli->outbuf,smb_vwv10,capabilities);
 452         p = smb_buf(cli->outbuf);
 453         memcpy(p, blob.data, blob.length);
 454         p += blob.length;
 455         p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
 456         p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
 457         cli_setup_bcc(cli, p);
 458         return cli_send_smb(cli);
 459 }
 460
 461 /****************************************************************************
 462  Send a extended security session setup blob, returning a reply blob.
 463 ****************************************************************************/
 464
 465 static DATA_BLOB cli_session_setup_blob_receive(struct cli_state *cli)
 466 {
 467         DATA_BLOB blob2 = data_blob(NULL, 0);
 468         char *p;
 469         size_t len;
 470
 471         if (!cli_receive_smb(cli))
 472                 return blob2;
 473
 474         show_msg(cli->inbuf);
 475
 476         if (cli_is_error(cli) && !NT_STATUS_EQUAL(cli_nt_error(cli),
 477                                                   NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 478                 return blob2;
 479         }
 480
 481         /* use the returned vuid from now on */
 482         cli->vuid = SVAL(cli->inbuf,smb_uid);
 483
 484         p = smb_buf(cli->inbuf);
 485
 486         blob2 = data_blob(p, SVAL(cli->inbuf, smb_vwv3));
 487
 488         p += blob2.length;
 489         p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
 490
 491         /* w2k with kerberos doesn't properly null terminate this field */
 492         len = smb_buflen(cli->inbuf) - PTR_DIFF(p, smb_buf(cli->inbuf));
 493         p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), len, 0);
 494
 495         return blob2;
 496 }
 497
 498 #ifdef HAVE_KRB5
 499
 500 /****************************************************************************
 501  Send a extended security session setup blob, returning a reply blob.
 502 ****************************************************************************/
 503
 504 static DATA_BLOB cli_session_setup_blob(struct cli_state *cli, DATA_BLOB blob)
 505 {
 506         DATA_BLOB blob2 = data_blob(NULL, 0);
 507         if (!cli_session_setup_blob_send(cli, blob)) {
 508                 return blob2;
 509         }
 510
 511         return cli_session_setup_blob_receive(cli);
 512 }
 513
 514 /****************************************************************************
 515  Use in-memory credentials cache
 516 ****************************************************************************/
 517
 518 static void use_in_memory_ccache(void) {
 519         setenv(KRB5_ENV_CCNAME, "MEMORY:cliconnect", 1);
 520 }
 521
 522 /****************************************************************************
 523  Do a spnego/kerberos encrypted session setup.
 524 ****************************************************************************/
 525
 526 static ADS_STATUS cli_session_setup_kerberos(struct cli_state *cli, const char *principal, const char *workgroup)
 527 {
 528         DATA_BLOB blob2, negTokenTarg;
 529         DATA_BLOB session_key_krb5;
 530         DATA_BLOB null_blob = data_blob(NULL, 0);
 531         int rc;
 532
 533         DEBUG(2,("Doing kerberos session setup\n"));
 534
 535         /* generate the encapsulated kerberos5 ticket */
 536         rc = spnego_gen_negTokenTarg(principal, 0, &negTokenTarg, &session_key_krb5);
 537
 538         if (rc) {
 539                 DEBUG(1, ("spnego_gen_negTokenTarg failed: %s\n", error_message(rc)));
 540                 return ADS_ERROR_KRB5(rc);
 541         }
 542
 543 #if 0
 544         file_save("negTokenTarg.dat", negTokenTarg.data, negTokenTarg.length);
 545 #endif
 546
 547         cli_simple_set_signing(cli, session_key_krb5, null_blob);
 548
 549         blob2 = cli_session_setup_blob(cli, negTokenTarg);
 550
 551         /* we don't need this blob for kerberos */
 552         data_blob_free(&blob2);
 553
 554         cli_set_session_key(cli, session_key_krb5);
 555
 556         data_blob_free(&negTokenTarg);
 557         data_blob_free(&session_key_krb5);
 558
 559         if (cli_is_error(cli)) {
 560                 if (NT_STATUS_IS_OK(cli_nt_error(cli))) {
 561                         return ADS_ERROR_NT(NT_STATUS_UNSUCCESSFUL);
 562                 }
 563         }
 564         return ADS_ERROR_NT(cli_nt_error(cli));
 565 }
 566 #endif  /* HAVE_KRB5 */
 567
 568
 569 /****************************************************************************
 570  Do a spnego/NTLMSSP encrypted session setup.
 571 ****************************************************************************/
 572
 573 static NTSTATUS cli_session_setup_ntlmssp(struct cli_state *cli, const char *user,
 574                                           const char *pass, const char *domain)
 575 {
 576         struct ntlmssp_state *ntlmssp_state;
 577         NTSTATUS nt_status;
 578         int turn = 1;
 579         DATA_BLOB msg1;
 580         DATA_BLOB blob = data_blob(NULL, 0);
 581         DATA_BLOB blob_in = data_blob(NULL, 0);
 582         DATA_BLOB blob_out = data_blob(NULL, 0);
 583
 584         cli_temp_set_signing(cli);
 585
 586         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_client_start(&ntlmssp_state))) {
 587                 return nt_status;
 588         }
 589
 590         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_username(ntlmssp_state, user))) {
 591                 return nt_status;
 592         }
 593         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_domain(ntlmssp_state, domain))) {
 594                 return nt_status;
 595         }
 596         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_password(ntlmssp_state, pass))) {
 597                 return nt_status;
 598         }
 599
 600         do {
 601                 nt_status = ntlmssp_update(ntlmssp_state,
 602                                                   blob_in, &blob_out);
 603                 data_blob_free(&blob_in);
 604                 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 605                         if (turn == 1) {
 606                                 /* and wrap it in a SPNEGO wrapper */
 607                                 msg1 = gen_negTokenInit(OID_NTLMSSP, blob_out);
 608                         } else {
 609                                 /* wrap it in SPNEGO */
 610                                 msg1 = spnego_gen_auth(blob_out);
 611                         }
 612
 613                         /* now send that blob on its way */
 614                         if (!cli_session_setup_blob_send(cli, msg1)) {
 615                                 DEBUG(3, ("Failed to send NTLMSSP/SPNEGO blob to server!\n"));
 616                                 nt_status = NT_STATUS_UNSUCCESSFUL;
 617                         } else {
 618                                 data_blob_free(&msg1);
 619
 620                                 blob = cli_session_setup_blob_receive(cli);
 621
 622                                 nt_status = cli_nt_error(cli);
 623                                 if (cli_is_error(cli) && NT_STATUS_IS_OK(nt_status)) {
 624                                         if (cli->smb_rw_error == READ_BAD_SIG) {
 625                                                 nt_status = NT_STATUS_ACCESS_DENIED;
 626                                         } else {
 627                                                 nt_status = NT_STATUS_UNSUCCESSFUL;
 628                                         }
 629                                 }
 630                         }
 631                 }
 632
 633                 if (!blob.length) {
 634                         if (NT_STATUS_IS_OK(nt_status)) {
 635                                 nt_status = NT_STATUS_UNSUCCESSFUL;
 636                         }
 637                 } else if ((turn == 1) &&
 638                            NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 639                         DATA_BLOB tmp_blob = data_blob(NULL, 0);
 640                         /* the server might give us back two challenges */
 641                         if (!spnego_parse_challenge(blob, &blob_in,
 642                                                     &tmp_blob)) {
 643                                 DEBUG(3,("Failed to parse challenges\n"));
 644                                 nt_status = NT_STATUS_INVALID_PARAMETER;
 645                         }
 646                         data_blob_free(&tmp_blob);
 647                 } else {
 648                         if (!spnego_parse_auth_response(blob, nt_status,
 649                                                         &blob_in)) {
 650                                 DEBUG(3,("Failed to parse auth response\n"));
 651                                 if (NT_STATUS_IS_OK(nt_status)
 652                                     || NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED))
 653                                         nt_status = NT_STATUS_INVALID_PARAMETER;
 654                         }
 655                 }
 656                 data_blob_free(&blob);
 657                 data_blob_free(&blob_out);
 658                 turn++;
 659         } while (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED));
 660
 661         if (NT_STATUS_IS_OK(nt_status)) {
 662
 663                 DATA_BLOB key = data_blob(ntlmssp_state->session_key.data,
 664                                           ntlmssp_state->session_key.length);
 665                 DATA_BLOB null_blob = data_blob(NULL, 0);
 666                 BOOL res;
 667
 668                 fstrcpy(cli->server_domain, ntlmssp_state->server_domain);
 669                 cli_set_session_key(cli, ntlmssp_state->session_key);
 670
 671                 res = cli_simple_set_signing(cli, key, null_blob);
 672
 673                 data_blob_free(&key);
 674
 675                 if (res) {
 676
 677                         /* 'resign' the last message, so we get the right sequence numbers
 678                            for checking the first reply from the server */
 679                         cli_calculate_sign_mac(cli);
 680
 681                         if (!cli_check_sign_mac(cli)) {
 682                                 nt_status = NT_STATUS_ACCESS_DENIED;
 683                         }
 684                 }
 685         }
 686
 687         /* we have a reference conter on ntlmssp_state, if we are signing
 688            then the state will be kept by the signing engine */
 689
 690         ntlmssp_end(&ntlmssp_state);
 691
 692         return nt_status;
 693 }
 694
 695 /****************************************************************************
 696  Do a spnego encrypted session setup.
 697 ****************************************************************************/
 698
 699 ADS_STATUS cli_session_setup_spnego(struct cli_state *cli, const char *user,
 700                               const char *pass, const char *domain)
 701 {
 702         char *principal;
 703         char *OIDs[ASN1_MAX_OIDS];
 704         int i;
 705         BOOL got_kerberos_mechanism = False;
 706         DATA_BLOB blob;
 707
 708         DEBUG(3,("Doing spnego session setup (blob length=%lu)\n", (unsigned long)cli->secblob.length));
 709
 710         /* the server might not even do spnego */
 711         if (cli->secblob.length <= 16) {
 712                 DEBUG(3,("server didn't supply a full spnego negprot\n"));
 713                 goto ntlmssp;
 714         }
 715
 716 #if 0
 717         file_save("negprot.dat", cli->secblob.data, cli->secblob.length);
 718 #endif
 719
 720         /* there is 16 bytes of GUID before the real spnego packet starts */
 721         blob = data_blob(cli->secblob.data+16, cli->secblob.length-16);
 722
 723         /* the server sent us the first part of the SPNEGO exchange in the negprot
 724            reply */
 725         if (!spnego_parse_negTokenInit(blob, OIDs, &principal)) {
 726                 data_blob_free(&blob);
 727                 return ADS_ERROR_NT(NT_STATUS_INVALID_PARAMETER);
 728         }
 729         data_blob_free(&blob);
 730
 731         /* make sure the server understands kerberos */
 732         for (i=0;OIDs[i];i++) {
 733                 DEBUG(3,("got OID=%s\n", OIDs[i]));
 734                 if (strcmp(OIDs[i], OID_KERBEROS5_OLD) == 0 ||
 735                     strcmp(OIDs[i], OID_KERBEROS5) == 0) {
 736                         got_kerberos_mechanism = True;
 737                 }
 738                 free(OIDs[i]);
 739         }
 740         DEBUG(3,("got principal=%s\n", principal));
 741
 742         fstrcpy(cli->user_name, user);
 743
 744 #ifdef HAVE_KRB5
 745         /* If password is set we reauthenticate to kerberos server
 746          * and do not store results */
 747
 748         if (got_kerberos_mechanism && cli->use_kerberos) {
 749                 ADS_STATUS rc;
 750
 751                 if (pass && *pass) {
 752                         int ret;
 753
 754                         use_in_memory_ccache();
 755                         ret = kerberos_kinit_password(user, pass, 0 /* no time correction for now */, NULL, NULL);
 756
 757                         if (ret){
 758                                 SAFE_FREE(principal);
 759                                 DEBUG(0, ("Kinit failed: %s\n", error_message(ret)));
 760                                 if (cli->fallback_after_kerberos)
 761                                         goto ntlmssp;
 762                                 return ADS_ERROR_KRB5(ret);
 763                         }
 764                 }
 765
 766                 rc = cli_session_setup_kerberos(cli, principal, domain);
 767                 if (ADS_ERR_OK(rc) || !cli->fallback_after_kerberos) {
 768                         SAFE_FREE(principal);
 769                         return rc;
 770                 }
 771         }
 772 #endif
 773
 774         SAFE_FREE(principal);
 775
 776 ntlmssp:
 777
 778         return ADS_ERROR_NT(cli_session_setup_ntlmssp(cli, user, pass, domain));
 779 }
 780
 781 /****************************************************************************
 782  Send a session setup. The username and workgroup is in UNIX character
 783  format and must be converted to DOS codepage format before sending. If the
 784  password is in plaintext, the same should be done.
 785 ****************************************************************************/
 786
 787 BOOL cli_session_setup(struct cli_state *cli,
 788                        const char *user,
 789                        const char *pass, int passlen,
 790                        const char *ntpass, int ntpasslen,
 791                        const char *workgroup)
 792 {
 793         char *p;
 794         fstring user2;
 795
 796         /* allow for workgroups as part of the username */
 797         fstrcpy(user2, user);
 798         if ((p=strchr_m(user2,'\\')) || (p=strchr_m(user2,'/')) ||
 799             (p=strchr_m(user2,*lp_winbind_separator()))) {
 800                 *p = 0;
 801                 user = p+1;
 802                 workgroup = user2;
 803         }
 804
 805         if (cli->protocol < PROTOCOL_LANMAN1)
 806                 return True;
 807
 808         /* now work out what sort of session setup we are going to
 809            do. I have split this into separate functions to make the
 810            flow a bit easier to understand (tridge) */
 811
 812         /* if its an older server then we have to use the older request format */
 813
 814         if (cli->protocol < PROTOCOL_NT1) {
 815                 if (!lp_client_lanman_auth() && passlen != 24 && (*pass)) {
 816                         DEBUG(1, ("Server requested LM password but 'client lanman auth'"
 817                                   " is disabled\n"));
 818                         return False;
 819                 }
 820
 821                 if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0 &&
 822                     !lp_client_plaintext_auth() && (*pass)) {
 823                         DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
 824                                   " is disabled\n"));
 825                         return False;
 826                 }
 827
 828                 return cli_session_setup_lanman2(cli, user, pass, passlen, workgroup);
 829         }
 830
 831         /* if no user is supplied then we have to do an anonymous connection.
 832            passwords are ignored */
 833
 834         if (!user || !*user)
 835                 return cli_session_setup_guest(cli);
 836
 837         /* if the server is share level then send a plaintext null
 838            password at this point. The password is sent in the tree
 839            connect */
 840
 841         if ((cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) == 0)
 842                 return cli_session_setup_plaintext(cli, user, "", workgroup);
 843
 844         /* if the server doesn't support encryption then we have to use
 845            plaintext. The second password is ignored */
 846
 847         if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0) {
 848                 if (!lp_client_plaintext_auth() && (*pass)) {
 849                         DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
 850                                   " is disabled\n"));
 851                         return False;
 852                 }
 853                 return cli_session_setup_plaintext(cli, user, pass, workgroup);
 854         }
 855
 856         /* if the server supports extended security then use SPNEGO */
 857
 858         if (cli->capabilities & CAP_EXTENDED_SECURITY) {
 859                 ADS_STATUS status = cli_session_setup_spnego(cli, user, pass, workgroup);
 860                 if (!ADS_ERR_OK(status)) {
 861                         DEBUG(3, ("SPNEGO login failed: %s\n", ads_errstr(status)));
 862                         return False;
 863                 }
 864                 return True;
 865         }
 866
 867         /* otherwise do a NT1 style session setup */
 868
 869         return cli_session_setup_nt1(cli, user,
 870                                      pass, passlen, ntpass, ntpasslen,
 871                                      workgroup);
 872 }
 873
 874 /****************************************************************************
 875  Send a uloggoff.
 876 *****************************************************************************/
 877
 878 BOOL cli_ulogoff(struct cli_state *cli)
 879 {
 880         memset(cli->outbuf,'\0',smb_size);
 881         set_message(cli->outbuf,2,0,True);
 882         SCVAL(cli->outbuf,smb_com,SMBulogoffX);
 883         cli_setup_packet(cli);
 884         SSVAL(cli->outbuf,smb_vwv0,0xFF);
 885         SSVAL(cli->outbuf,smb_vwv2,0);  /* no additional info */
 886
 887         cli_send_smb(cli);
 888         if (!cli_receive_smb(cli))
 889                 return False;
 890
 891         return !cli_is_error(cli);
 892 }
 893
 894 /****************************************************************************
 895  Send a tconX.
 896 ****************************************************************************/
 897 BOOL cli_send_tconX(struct cli_state *cli,
 898                     const char *share, const char *dev, const char *pass, int passlen)
 899 {
 900         fstring fullshare, pword;
 901         char *p;
 902         memset(cli->outbuf,'\0',smb_size);
 903         memset(cli->inbuf,'\0',smb_size);
 904
 905         fstrcpy(cli->share, share);
 906
 907         /* in user level security don't send a password now */
 908         if (cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) {
 909                 passlen = 1;
 910                 pass = "";
 911         }
 912
 913         if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && *pass && passlen != 24) {
 914                 if (!lp_client_lanman_auth()) {
 915                         DEBUG(1, ("Server requested LANMAN password (share-level security) but 'client use lanman auth'"
 916                                   " is disabled\n"));
 917                         return False;
 918                 }
 919
 920                 /*
 921                  * Non-encrypted passwords - convert to DOS codepage before encryption.
 922                  */
 923                 passlen = 24;
 924                 SMBencrypt(pass,cli->secblob.data,(uchar *)pword);
 925         } else {
 926                 if((cli->sec_mode & (NEGOTIATE_SECURITY_USER_LEVEL|NEGOTIATE_SECURITY_CHALLENGE_RESPONSE)) == 0) {
 927                         if (!lp_client_plaintext_auth() && (*pass)) {
 928                                 DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
 929                                           " is disabled\n"));
 930                                 return False;
 931                         }
 932
 933                         /*
 934                          * Non-encrypted passwords - convert to DOS codepage before using.
 935                          */
 936                         passlen = clistr_push(cli, pword, pass, sizeof(pword), STR_TERMINATE);
 937
 938                 } else {
 939                         memcpy(pword, pass, passlen);
 940                 }
 941         }
 942
 943         slprintf(fullshare, sizeof(fullshare)-1,
 944                  "\\\\%s\\%s", cli->desthost, share);
 945
 946         set_message(cli->outbuf,4, 0, True);
 947         SCVAL(cli->outbuf,smb_com,SMBtconX);
 948         cli_setup_packet(cli);
 949
 950         SSVAL(cli->outbuf,smb_vwv0,0xFF);
 951         SSVAL(cli->outbuf,smb_vwv3,passlen);
 952
 953         p = smb_buf(cli->outbuf);
 954         memcpy(p,pword,passlen);
 955         p += passlen;
 956         p += clistr_push(cli, p, fullshare, -1, STR_TERMINATE |STR_UPPER);
 957         p += clistr_push(cli, p, dev, -1, STR_TERMINATE |STR_UPPER | STR_ASCII);
 958
 959         cli_setup_bcc(cli, p);
 960
 961         cli_send_smb(cli);
 962         if (!cli_receive_smb(cli))
 963                 return False;
 964
 965         if (cli_is_error(cli))
 966                 return False;
 967
 968         clistr_pull(cli, cli->dev, smb_buf(cli->inbuf), sizeof(fstring), -1, STR_TERMINATE|STR_ASCII);
 969
 970         if (cli->protocol >= PROTOCOL_NT1 &&
 971             smb_buflen(cli->inbuf) == 3) {
 972                 /* almost certainly win95 - enable bug fixes */
 973                 cli->win95 = True;
 974         }
 975
 976         cli->cnum = SVAL(cli->inbuf,smb_tid);
 977         return True;
 978 }
 979
 980 /****************************************************************************
 981  Send a tree disconnect.
 982 ****************************************************************************/
 983
 984 BOOL cli_tdis(struct cli_state *cli)
 985 {
 986         memset(cli->outbuf,'\0',smb_size);
 987         set_message(cli->outbuf,0,0,True);
 988         SCVAL(cli->outbuf,smb_com,SMBtdis);
 989         SSVAL(cli->outbuf,smb_tid,cli->cnum);
 990         cli_setup_packet(cli);
 991
 992         cli_send_smb(cli);
 993         if (!cli_receive_smb(cli))
 994                 return False;
 995
 996         if (cli_is_error(cli)) {
 997                 return False;
 998         }
 999
1000         cli->cnum = -1;
1001         return True;
1002 }
1003
1004 /****************************************************************************
1005  Send a negprot command.
1006 ****************************************************************************/
1007
1008 void cli_negprot_send(struct cli_state *cli)
1009 {
1010         char *p;
1011         int numprots;
1012
1013         if (cli->protocol < PROTOCOL_NT1)
1014                 cli->use_spnego = False;
1015
1016         memset(cli->outbuf,'\0',smb_size);
1017
1018         /* setup the protocol strings */
1019         set_message(cli->outbuf,0,0,True);
1020
1021         p = smb_buf(cli->outbuf);
1022         for (numprots=0;
1023              prots[numprots].name && prots[numprots].prot<=cli->protocol;
1024              numprots++) {
1025                 *p++ = 2;
1026                 p += clistr_push(cli, p, prots[numprots].name, -1, STR_TERMINATE);
1027         }
1028
1029         SCVAL(cli->outbuf,smb_com,SMBnegprot);
1030         cli_setup_bcc(cli, p);
1031         cli_setup_packet(cli);
1032
1033         SCVAL(smb_buf(cli->outbuf),0,2);
1034
1035         cli_send_smb(cli);
1036 }
1037
1038 /****************************************************************************
1039  Send a negprot command.
1040 ****************************************************************************/
1041
1042 BOOL cli_negprot(struct cli_state *cli)
1043 {
1044         char *p;
1045         int numprots;
1046         int plength;
1047
1048         if (cli->protocol < PROTOCOL_NT1)
1049                 cli->use_spnego = False;
1050
1051         memset(cli->outbuf,'\0',smb_size);
1052
1053         /* setup the protocol strings */
1054         for (plength=0,numprots=0;
1055              prots[numprots].name && prots[numprots].prot<=cli->protocol;
1056              numprots++)
1057                 plength += strlen(prots[numprots].name)+2;
1058
1059         set_message(cli->outbuf,0,plength,True);
1060
1061         p = smb_buf(cli->outbuf);
1062         for (numprots=0;
1063              prots[numprots].name && prots[numprots].prot<=cli->protocol;
1064              numprots++) {
1065                 *p++ = 2;
1066                 p += clistr_push(cli, p, prots[numprots].name, -1, STR_TERMINATE);
1067         }
1068
1069         SCVAL(cli->outbuf,smb_com,SMBnegprot);
1070         cli_setup_packet(cli);
1071
1072         SCVAL(smb_buf(cli->outbuf),0,2);
1073
1074         cli_send_smb(cli);
1075         if (!cli_receive_smb(cli))
1076                 return False;
1077
1078         show_msg(cli->inbuf);
1079
1080         if (cli_is_error(cli) ||
1081             ((int)SVAL(cli->inbuf,smb_vwv0) >= numprots)) {
1082                 return(False);
1083         }
1084
1085         cli->protocol = prots[SVAL(cli->inbuf,smb_vwv0)].prot;
1086
1087         if ((cli->protocol < PROTOCOL_NT1) && cli->sign_info.mandatory_signing) {
1088                 DEBUG(0,("cli_negprot: SMB signing is mandatory and the selected protocol level doesn't support it.\n"));
1089                 return False;
1090         }
1091
1092         if (cli->protocol >= PROTOCOL_NT1) {
1093                 /* NT protocol */
1094                 cli->sec_mode = CVAL(cli->inbuf,smb_vwv1);
1095                 cli->max_mux = SVAL(cli->inbuf, smb_vwv1+1);
1096                 cli->max_xmit = IVAL(cli->inbuf,smb_vwv3+1);
1097                 cli->sesskey = IVAL(cli->inbuf,smb_vwv7+1);
1098                 cli->serverzone = SVALS(cli->inbuf,smb_vwv15+1);
1099                 cli->serverzone *= 60;
1100                 /* this time arrives in real GMT */
1101                 cli->servertime = interpret_long_date(cli->inbuf+smb_vwv11+1);
1102                 cli->secblob = data_blob(smb_buf(cli->inbuf),smb_buflen(cli->inbuf));
1103                 cli->capabilities = IVAL(cli->inbuf,smb_vwv9+1);
1104                 if (cli->capabilities & CAP_RAW_MODE) {
1105                         cli->readbraw_supported = True;
1106                         cli->writebraw_supported = True;
1107                 }
1108                 /* work out if they sent us a workgroup */
1109                 if (!(cli->capabilities & CAP_EXTENDED_SECURITY) &&
1110                     smb_buflen(cli->inbuf) > 8) {
1111                         clistr_pull(cli, cli->server_domain,
1112                                     smb_buf(cli->inbuf)+8, sizeof(cli->server_domain),
1113                                     smb_buflen(cli->inbuf)-8, STR_UNICODE|STR_NOALIGN);
1114                 }
1115
1116                 /*
1117                  * As signing is slow we only turn it on if either the client or
1118                  * the server require it. JRA.
1119                  */
1120
1121                 if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_REQUIRED) {
1122                         /* Fail if server says signing is mandatory and we don't want to support it. */
1123                         if (!cli->sign_info.allow_smb_signing) {
1124                                 DEBUG(0,("cli_negprot: SMB signing is mandatory and we have disabled it.\n"));
1125                                 return False;
1126                         }
1127                         cli->sign_info.negotiated_smb_signing = True;
1128                         cli->sign_info.mandatory_signing = True;
1129                 } else if (cli->sign_info.mandatory_signing && cli->sign_info.allow_smb_signing) {
1130                         /* Fail if client says signing is mandatory and the server doesn't support it. */
1131                         if (!(cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED)) {
1132                                 DEBUG(1,("cli_negprot: SMB signing is mandatory and the server doesn't support it.\n"));
1133                                 return False;
1134                         }
1135                         cli->sign_info.negotiated_smb_signing = True;
1136                         cli->sign_info.mandatory_signing = True;
1137                 } else if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED) {
1138                         cli->sign_info.negotiated_smb_signing = True;
1139                 }
1140
1141                 if (cli->capabilities & (CAP_LARGE_READX|CAP_LARGE_WRITEX)) {
1142                         SAFE_FREE(cli->outbuf);
1143                         SAFE_FREE(cli->inbuf);
1144                         cli->outbuf = (char *)SMB_MALLOC(CLI_MAX_LARGE_READX_SIZE+SAFETY_MARGIN);
1145                         cli->inbuf = (char *)SMB_MALLOC(CLI_MAX_LARGE_READX_SIZE+SAFETY_MARGIN);
1146                         cli->bufsize = CLI_MAX_LARGE_READX_SIZE;
1147                 }
1148
1149         } else if (cli->protocol >= PROTOCOL_LANMAN1) {
1150                 cli->use_spnego = False;
1151                 cli->sec_mode = SVAL(cli->inbuf,smb_vwv1);
1152                 cli->max_xmit = SVAL(cli->inbuf,smb_vwv2);
1153                 cli->max_mux = SVAL(cli->inbuf, smb_vwv3);
1154                 cli->sesskey = IVAL(cli->inbuf,smb_vwv6);
1155                 cli->serverzone = SVALS(cli->inbuf,smb_vwv10);
1156                 cli->serverzone *= 60;
1157                 /* this time is converted to GMT by make_unix_date */
1158                 cli->servertime = make_unix_date(cli->inbuf+smb_vwv8);
1159                 cli->readbraw_supported = ((SVAL(cli->inbuf,smb_vwv5) & 0x1) != 0);
1160                 cli->writebraw_supported = ((SVAL(cli->inbuf,smb_vwv5) & 0x2) != 0);
1161                 cli->secblob = data_blob(smb_buf(cli->inbuf),smb_buflen(cli->inbuf));
1162         } else {
1163                 /* the old core protocol */
1164                 cli->use_spnego = False;
1165                 cli->sec_mode = 0;
1166                 cli->serverzone = TimeDiff(time(NULL));
1167         }
1168
1169         cli->max_xmit = MIN(cli->max_xmit, CLI_BUFFER_SIZE);
1170
1171         /* a way to force ascii SMB */
1172         if (getenv("CLI_FORCE_ASCII"))
1173                 cli->capabilities &= ~CAP_UNICODE;
1174
1175         return True;
1176 }
1177
1178 /****************************************************************************
1179  Send a session request. See rfc1002.txt 4.3 and 4.3.2.
1180 ****************************************************************************/
1181
1182 BOOL cli_session_request(struct cli_state *cli,
1183                          struct nmb_name *calling, struct nmb_name *called)
1184 {
1185         char *p;
1186         int len = 4;
1187         extern pstring user_socket_options;
1188
1189         memcpy(&(cli->calling), calling, sizeof(*calling));
1190         memcpy(&(cli->called ), called , sizeof(*called ));
1191
1192         /* put in the destination name */
1193         p = cli->outbuf+len;
1194         name_mangle(cli->called .name, p, cli->called .name_type);
1195         len += name_len(p);
1196
1197         /* and my name */
1198         p = cli->outbuf+len;
1199         name_mangle(cli->calling.name, p, cli->calling.name_type);
1200         len += name_len(p);
1201
1202         /* 445 doesn't have session request */
1203         if (cli->port == 445)
1204                 return True;
1205
1206         /* send a session request (RFC 1002) */
1207         /* setup the packet length
1208          * Remove four bytes from the length count, since the length
1209          * field in the NBT Session Service header counts the number
1210          * of bytes which follow.  The cli_send_smb() function knows
1211          * about this and accounts for those four bytes.
1212          * CRH.
1213          */
1214         len -= 4;
1215         _smb_setlen(cli->outbuf,len);
1216         SCVAL(cli->outbuf,0,0x81);
1217
1218         cli_send_smb(cli);
1219         DEBUG(5,("Sent session request\n"));
1220
1221         if (!cli_receive_smb(cli))
1222                 return False;
1223
1224         if (CVAL(cli->inbuf,0) == 0x84) {
1225                 /* C. Hoch  9/14/95 Start */
1226                 /* For information, here is the response structure.
1227                  * We do the byte-twiddling to for portability.
1228                 struct RetargetResponse{
1229                 unsigned char type;
1230                 unsigned char flags;
1231                 int16 length;
1232                 int32 ip_addr;
1233                 int16 port;
1234                 };
1235                 */
1236                 int port = (CVAL(cli->inbuf,8)<<8)+CVAL(cli->inbuf,9);
1237                 /* SESSION RETARGET */
1238                 putip((char *)&cli->dest_ip,cli->inbuf+4);
1239
1240                 cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ip, port, LONG_CONNECT_TIMEOUT);
1241                 if (cli->fd == -1)
1242                         return False;
1243
1244                 DEBUG(3,("Retargeted\n"));
1245
1246                 set_socket_options(cli->fd,user_socket_options);
1247
1248                 /* Try again */
1249                 {
1250                         static int depth;
1251                         BOOL ret;
1252                         if (depth > 4) {
1253                                 DEBUG(0,("Retarget recursion - failing\n"));
1254                                 return False;
1255                         }
1256                         depth++;
1257                         ret = cli_session_request(cli, calling, called);
1258                         depth--;
1259                         return ret;
1260                 }
1261         } /* C. Hoch 9/14/95 End */
1262
1263         if (CVAL(cli->inbuf,0) != 0x82) {
1264                 /* This is the wrong place to put the error... JRA. */
1265                 cli->rap_error = CVAL(cli->inbuf,4);
1266                 return False;
1267         }
1268         return(True);
1269 }
1270
1271 /****************************************************************************
1272  Open the client sockets.
1273 ****************************************************************************/
1274
1275 BOOL cli_connect(struct cli_state *cli, const char *host, struct in_addr *ip)
1276 {
1277         extern pstring user_socket_options;
1278         int name_type = 0x20;
1279         char *p;
1280
1281         /* reasonable default hostname */
1282         if (!host) host = "*SMBSERVER";
1283
1284         fstrcpy(cli->desthost, host);
1285
1286         /* allow hostnames of the form NAME#xx and do a netbios lookup */
1287         if ((p = strchr(cli->desthost, '#'))) {
1288                 name_type = strtol(p+1, NULL, 16);
1289                 *p = 0;
1290         }
1291
1292         if (!ip || is_zero_ip(*ip)) {
1293                 if (!resolve_name(cli->desthost, &cli->dest_ip, name_type)) {
1294                         return False;
1295                 }
1296                 if (ip) *ip = cli->dest_ip;
1297         } else {
1298                 cli->dest_ip = *ip;
1299         }
1300
1301         if (getenv("LIBSMB_PROG")) {
1302                 cli->fd = sock_exec(getenv("LIBSMB_PROG"));
1303         } else {
1304                 /* try 445 first, then 139 */
1305                 int port = cli->port?cli->port:445;
1306                 cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ip,
1307                                           port, cli->timeout);
1308                 if (cli->fd == -1 && cli->port == 0) {
1309                         port = 139;
1310                         cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ip,
1311                                                   port, cli->timeout);
1312                 }
1313                 if (cli->fd != -1)
1314                         cli->port = port;
1315         }
1316         if (cli->fd == -1) {
1317                 DEBUG(1,("Error connecting to %s (%s)\n",
1318                          ip?inet_ntoa(*ip):host,strerror(errno)));
1319                 return False;
1320         }
1321
1322         set_socket_options(cli->fd,user_socket_options);
1323
1324         return True;
1325 }
1326
1327 /****************************************************************************
1328  Initialise client credentials for authenticated pipe access.
1329 ****************************************************************************/
1330
1331 void init_creds(struct ntuser_creds *creds, const char* username,
1332                        const char* domain, const char* password)
1333 {
1334         ZERO_STRUCTP(creds);
1335
1336         pwd_set_cleartext(&creds->pwd, password);
1337
1338         fstrcpy(creds->user_name, username);
1339         fstrcpy(creds->domain, domain);
1340
1341         if (!*username) {
1342                 creds->pwd.null_pwd = True;
1343         }
1344 }
1345
1346 /**
1347    establishes a connection to after the negprot.
1348    @param output_cli A fully initialised cli structure, non-null only on success
1349    @param dest_host The netbios name of the remote host
1350    @param dest_ip (optional) The the destination IP, NULL for name based lookup
1351    @param port (optional) The destination port (0 for default)
1352    @param retry BOOL. Did this connection fail with a retryable error ?
1353
1354 */
1355 NTSTATUS cli_start_connection(struct cli_state **output_cli,
1356                               const char *my_name,
1357                               const char *dest_host,
1358                               struct in_addr *dest_ip, int port,
1359                               int signing_state, int flags,
1360                               BOOL *retry)
1361 {
1362         NTSTATUS nt_status;
1363         struct nmb_name calling;
1364         struct nmb_name called;
1365         struct cli_state *cli;
1366         struct in_addr ip;
1367
1368         if (retry)
1369                 *retry = False;
1370
1371         if (!my_name)
1372                 my_name = global_myname();
1373
1374         if (!(cli = cli_initialise(NULL)))
1375                 return NT_STATUS_NO_MEMORY;
1376
1377         make_nmb_name(&calling, my_name, 0x0);
1378         make_nmb_name(&called , dest_host, 0x20);
1379
1380         if (cli_set_port(cli, port) != port) {
1381                 cli_shutdown(cli);
1382                 return NT_STATUS_UNSUCCESSFUL;
1383         }
1384
1385         cli_set_timeout(cli, 10000); /* 10 seconds. */
1386
1387         if (dest_ip)
1388                 ip = *dest_ip;
1389         else
1390                 ZERO_STRUCT(ip);
1391
1392 again:
1393
1394         DEBUG(3,("Connecting to host=%s\n", dest_host));
1395
1396         if (!cli_connect(cli, dest_host, &ip)) {
1397                 DEBUG(1,("cli_full_connection: failed to connect to %s (%s)\n",
1398                          nmb_namestr(&called), inet_ntoa(ip)));
1399                 cli_shutdown(cli);
1400                 return NT_STATUS_UNSUCCESSFUL;
1401         }
1402
1403         if (retry)
1404                 *retry = True;
1405
1406         if (!cli_session_request(cli, &calling, &called)) {
1407                 char *p;
1408                 DEBUG(1,("session request to %s failed (%s)\n",
1409                          called.name, cli_errstr(cli)));
1410                 if ((p=strchr(called.name, '.')) && !is_ipaddress(called.name)) {
1411                         *p = 0;
1412                         goto again;
1413                 }
1414                 if (strcmp(called.name, "*SMBSERVER")) {
1415                         make_nmb_name(&called , "*SMBSERVER", 0x20);
1416                         goto again;
1417                 }
1418                 return NT_STATUS_UNSUCCESSFUL;
1419         }
1420
1421         cli_setup_signing_state(cli, signing_state);
1422
1423         if (flags & CLI_FULL_CONNECTION_DONT_SPNEGO)
1424                 cli->use_spnego = False;
1425         else if (flags & CLI_FULL_CONNECTION_USE_KERBEROS)
1426                 cli->use_kerberos = True;
1427
1428         if (!cli_negprot(cli)) {
1429                 DEBUG(1,("failed negprot\n"));
1430                 nt_status = NT_STATUS_UNSUCCESSFUL;
1431                 cli_shutdown(cli);
1432                 return nt_status;
1433         }
1434
1435         *output_cli = cli;
1436         return NT_STATUS_OK;
1437 }
1438
1439
1440 /**
1441    establishes a connection right up to doing tconX, password specified.
1442    @param output_cli A fully initialised cli structure, non-null only on success
1443    @param dest_host The netbios name of the remote host
1444    @param dest_ip (optional) The the destination IP, NULL for name based lookup
1445    @param port (optional) The destination port (0 for default)
1446    @param service (optional) The share to make the connection to.  Should be 'unqualified' in any way.
1447    @param service_type The 'type' of serivice.
1448    @param user Username, unix string
1449    @param domain User's domain
1450    @param password User's password, unencrypted unix string.
1451    @param retry BOOL. Did this connection fail with a retryable error ?
1452 */
1453
1454 NTSTATUS cli_full_connection(struct cli_state **output_cli,
1455                              const char *my_name,
1456                              const char *dest_host,
1457                              struct in_addr *dest_ip, int port,
1458                              const char *service, const char *service_type,
1459                              const char *user, const char *domain,
1460                              const char *password, int flags,
1461                              int signing_state,
1462                              BOOL *retry)
1463 {
1464         struct ntuser_creds creds;
1465         NTSTATUS nt_status;
1466         struct cli_state *cli = NULL;
1467
1468         nt_status = cli_start_connection(&cli, my_name, dest_host,
1469                                          dest_ip, port, signing_state, flags, retry);
1470
1471         if (!NT_STATUS_IS_OK(nt_status)) {
1472                 return nt_status;
1473         }
1474
1475         if (!cli_session_setup(cli, user, password, strlen(password)+1,
1476                                password, strlen(password)+1,
1477                                domain)) {
1478                 if ((flags & CLI_FULL_CONNECTION_ANNONYMOUS_FALLBACK)
1479                     && cli_session_setup(cli, "", "", 0, "", 0, domain)) {
1480                 } else {
1481                         nt_status = cli_nt_error(cli);
1482                         DEBUG(1,("failed session setup with %s\n", nt_errstr(nt_status)));
1483                         cli_shutdown(cli);
1484                         if (NT_STATUS_IS_OK(nt_status))
1485                                 nt_status = NT_STATUS_UNSUCCESSFUL;
1486                         return nt_status;
1487                 }
1488         }
1489
1490         if (service) {
1491                 if (!cli_send_tconX(cli, service, service_type,
1492                                     password, strlen(password)+1)) {
1493                         nt_status = cli_nt_error(cli);
1494                         DEBUG(1,("failed tcon_X with %s\n", nt_errstr(nt_status)));
1495                         cli_shutdown(cli);
1496                         if (NT_STATUS_IS_OK(nt_status)) {
1497                                 nt_status = NT_STATUS_UNSUCCESSFUL;
1498                         }
1499                         return nt_status;
1500                 }
1501         }
1502
1503         init_creds(&creds, user, domain, password);
1504         cli_init_creds(cli, &creds);
1505
1506         *output_cli = cli;
1507         return NT_STATUS_OK;
1508 }
1509
1510 /****************************************************************************
1511  Attempt a NetBIOS session request, falling back to *SMBSERVER if needed.
1512 ****************************************************************************/
1513
1514 BOOL attempt_netbios_session_request(struct cli_state *cli, const char *srchost, const char *desthost,
1515                                      struct in_addr *pdest_ip)
1516 {
1517         struct nmb_name calling, called;
1518
1519         make_nmb_name(&calling, srchost, 0x0);
1520
1521         /*
1522          * If the called name is an IP address
1523          * then use *SMBSERVER immediately.
1524          */
1525
1526         if(is_ipaddress(desthost))
1527                 make_nmb_name(&called, "*SMBSERVER", 0x20);
1528         else
1529                 make_nmb_name(&called, desthost, 0x20);
1530
1531         if (!cli_session_request(cli, &calling, &called)) {
1532                 struct nmb_name smbservername;
1533
1534                 make_nmb_name(&smbservername , "*SMBSERVER", 0x20);
1535
1536                 /*
1537                  * If the name wasn't *SMBSERVER then
1538                  * try with *SMBSERVER if the first name fails.
1539                  */
1540
1541                 if (nmb_name_equal(&called, &smbservername)) {
1542
1543                         /*
1544                          * The name used was *SMBSERVER, don't bother with another name.
1545                          */
1546
1547                         DEBUG(0,("attempt_netbios_session_request: %s rejected the session for name *SMBSERVER \
1548 with error %s.\n", desthost, cli_errstr(cli) ));
1549                         return False;
1550                 }
1551
1552                 /*
1553                  * We need to close the connection here but can't call cli_shutdown as
1554                  * will free an allocated cli struct. cli_close_connection was invented
1555                  * for this purpose. JRA. Based on work by "Kim R. Pedersen" <krp@filanet.dk>.
1556                  */
1557
1558                 cli_close_connection(cli);
1559
1560                 if (!cli_initialise(cli) ||
1561                                 !cli_connect(cli, desthost, pdest_ip) ||
1562                                 !cli_session_request(cli, &calling, &smbservername)) {
1563                         DEBUG(0,("attempt_netbios_session_request: %s rejected the session for \
1564 name *SMBSERVER with error %s\n", desthost, cli_errstr(cli) ));
1565                         return False;
1566                 }
1567         }
1568
1569         return True;
1570 }
1571
1572
1573
1574
1575
1576 /****************************************************************************
1577  Send an old style tcon.
1578 ****************************************************************************/
1579 NTSTATUS cli_raw_tcon(struct cli_state *cli,
1580                       const char *service, const char *pass, const char *dev,
1581                       uint16 *max_xmit, uint16 *tid)
1582 {
1583         char *p;
1584
1585         if (!lp_client_plaintext_auth() && (*pass)) {
1586                 DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
1587                           " is disabled\n"));
1588                 return NT_STATUS_ACCESS_DENIED;
1589         }
1590
1591         memset(cli->outbuf,'\0',smb_size);
1592         memset(cli->inbuf,'\0',smb_size);
1593
1594         set_message(cli->outbuf, 0, 0, True);
1595         SCVAL(cli->outbuf,smb_com,SMBtcon);
1596         cli_setup_packet(cli);
1597
1598         p = smb_buf(cli->outbuf);
1599         *p++ = 4; p += clistr_push(cli, p, service, -1, STR_TERMINATE | STR_NOALIGN);
1600         *p++ = 4; p += clistr_push(cli, p, pass, -1, STR_TERMINATE | STR_NOALIGN);
1601         *p++ = 4; p += clistr_push(cli, p, dev, -1, STR_TERMINATE | STR_NOALIGN);
1602
1603         cli_setup_bcc(cli, p);
1604
1605         cli_send_smb(cli);
1606         if (!cli_receive_smb(cli)) {
1607                 return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
1608         }
1609
1610         if (cli_is_error(cli)) {
1611                 return cli_nt_error(cli);
1612         }
1613
1614         *max_xmit = SVAL(cli->inbuf, smb_vwv0);
1615         *tid = SVAL(cli->inbuf, smb_vwv1);
1616
1617         return NT_STATUS_OK;
1618 }
1619
1620 /* Return a cli_state pointing at the IPC$ share for the given server */
1621
1622 struct cli_state *get_ipc_connect(char *server, struct in_addr *server_ip,
1623                                          struct user_auth_info *user_info)
1624 {
1625         struct cli_state *cli;
1626         pstring myname;
1627         NTSTATUS nt_status;
1628
1629         get_myname(myname);
1630
1631         nt_status = cli_full_connection(&cli, myname, server, server_ip, 0, "IPC$", "IPC",
1632                                         user_info->username, lp_workgroup(), user_info->password,
1633                                         CLI_FULL_CONNECTION_ANNONYMOUS_FALLBACK, Undefined, NULL);
1634
1635         if (NT_STATUS_IS_OK(nt_status)) {
1636                 return cli;
1637         } else if (is_ipaddress(server)) {
1638             /* windows 9* needs a correct NMB name for connections */
1639             fstring remote_name;
1640
1641             if (name_status_find("*", 0, 0, *server_ip, remote_name)) {
1642                 cli = get_ipc_connect(remote_name, server_ip, user_info);
1643                 if (cli)
1644                     return cli;
1645             }
1646         }
1647         return NULL;
1648 }
1649
1650 /*
1651  * Given the IP address of a master browser on the network, return its
1652  * workgroup and connect to it.
1653  *
1654  * This function is provided to allow additional processing beyond what
1655  * get_ipc_connect_master_ip_bcast() does, e.g. to retrieve the list of master
1656  * browsers and obtain each master browsers' list of domains (in case the
1657  * first master browser is recently on the network and has not yet
1658  * synchronized with other master browsers and therefore does not yet have the
1659  * entire network browse list)
1660  */
1661
1662 struct cli_state *get_ipc_connect_master_ip(struct ip_service * mb_ip, pstring workgroup, struct user_auth_info *user_info)
1663 {
1664         static fstring name;
1665         struct cli_state *cli;
1666         struct in_addr server_ip;
1667
1668         DEBUG(99, ("Looking up name of master browser %s\n",
1669                    inet_ntoa(mb_ip->ip)));
1670
1671         /*
1672          * Do a name status query to find out the name of the master browser.
1673          * We use <01><02>__MSBROWSE__<02>#01 if *#00 fails because a domain
1674          * master browser will not respond to a wildcard query (or, at least,
1675          * an NT4 server acting as the domain master browser will not).
1676          *
1677          * We might be able to use ONLY the query on MSBROWSE, but that's not
1678          * yet been tested with all Windows versions, so until it is, leave
1679          * the original wildcard query as the first choice and fall back to
1680          * MSBROWSE if the wildcard query fails.
1681          */
1682         if (!name_status_find("*", 0, 0x1d, mb_ip->ip, name) &&
1683             !name_status_find(MSBROWSE, 1, 0x1d, mb_ip->ip, name)) {
1684
1685                 DEBUG(99, ("Could not retrieve name status for %s\n",
1686                            inet_ntoa(mb_ip->ip)));
1687                 return NULL;
1688         }
1689
1690         if (!find_master_ip(name, &server_ip)) {
1691                 DEBUG(99, ("Could not find master ip for %s\n", name));
1692                 return NULL;
1693         }
1694
1695                 pstrcpy(workgroup, name);
1696
1697                 DEBUG(4, ("found master browser %s, %s\n",
1698                   name, inet_ntoa(mb_ip->ip)));
1699
1700                 cli = get_ipc_connect(inet_ntoa(server_ip), &server_ip, user_info);
1701
1702                 return cli;
1703
1704 }
1705
1706 /*
1707  * Return the IP address and workgroup of a master browser on the network, and
1708  * connect to it.
1709  */
1710
1711 struct cli_state *get_ipc_connect_master_ip_bcast(pstring workgroup, struct user_auth_info *user_info)
1712 {
1713         struct ip_service *ip_list;
1714         struct cli_state *cli;
1715         int i, count;
1716
1717         DEBUG(99, ("Do broadcast lookup for workgroups on local network\n"));
1718
1719         /* Go looking for workgroups by broadcasting on the local network */
1720
1721         if (!name_resolve_bcast(MSBROWSE, 1, &ip_list, &count)) {
1722                 DEBUG(99, ("No master browsers responded\n"));
1723                 return False;
1724         }
1725
1726         for (i = 0; i < count; i++) {
1727             DEBUG(99, ("Found master browser %s\n", inet_ntoa(ip_list[i].ip)));
1728
1729             cli = get_ipc_connect_master_ip(&ip_list[i], workgroup, user_info);
1730             if (cli)
1731                     return(cli);
1732         }
1733
1734         return NULL;
1735 }