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));
 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                                 return ADS_ERROR_KRB5(ret);
 761                         }
 762                 }
 763
 764                 rc = cli_session_setup_kerberos(cli, principal, domain);
 765                 SAFE_FREE(principal);
 766                 return rc;
 767         }
 768 #endif
 769
 770         SAFE_FREE(principal);
 771
 772 ntlmssp:
 773
 774         return ADS_ERROR_NT(cli_session_setup_ntlmssp(cli, user, pass, domain));
 775 }
 776
 777 /****************************************************************************
 778  Send a session setup. The username and workgroup is in UNIX character
 779  format and must be converted to DOS codepage format before sending. If the
 780  password is in plaintext, the same should be done.
 781 ****************************************************************************/
 782
 783 BOOL cli_session_setup(struct cli_state *cli,
 784                        const char *user,
 785                        const char *pass, int passlen,
 786                        const char *ntpass, int ntpasslen,
 787                        const char *workgroup)
 788 {
 789         char *p;
 790         fstring user2;
 791
 792         /* allow for workgroups as part of the username */
 793         fstrcpy(user2, user);
 794         if ((p=strchr_m(user2,'\\')) || (p=strchr_m(user2,'/')) ||
 795             (p=strchr_m(user2,*lp_winbind_separator()))) {
 796                 *p = 0;
 797                 user = p+1;
 798                 workgroup = user2;
 799         }
 800
 801         if (cli->protocol < PROTOCOL_LANMAN1)
 802                 return True;
 803
 804         /* now work out what sort of session setup we are going to
 805            do. I have split this into separate functions to make the
 806            flow a bit easier to understand (tridge) */
 807
 808         /* if its an older server then we have to use the older request format */
 809
 810         if (cli->protocol < PROTOCOL_NT1) {
 811                 if (!lp_client_lanman_auth() && passlen != 24 && (*pass)) {
 812                         DEBUG(1, ("Server requested LM password but 'client lanman auth'"
 813                                   " is disabled\n"));
 814                         return False;
 815                 }
 816
 817                 if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0 &&
 818                     !lp_client_plaintext_auth() && (*pass)) {
 819                         DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
 820                                   " is disabled\n"));
 821                         return False;
 822                 }
 823
 824                 return cli_session_setup_lanman2(cli, user, pass, passlen, workgroup);
 825         }
 826
 827         /* if no user is supplied then we have to do an anonymous connection.
 828            passwords are ignored */
 829
 830         if (!user || !*user)
 831                 return cli_session_setup_guest(cli);
 832
 833         /* if the server is share level then send a plaintext null
 834            password at this point. The password is sent in the tree
 835            connect */
 836
 837         if ((cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) == 0)
 838                 return cli_session_setup_plaintext(cli, user, "", workgroup);
 839
 840         /* if the server doesn't support encryption then we have to use
 841            plaintext. The second password is ignored */
 842
 843         if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0) {
 844                 if (!lp_client_plaintext_auth() && (*pass)) {
 845                         DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
 846                                   " is disabled\n"));
 847                         return False;
 848                 }
 849                 return cli_session_setup_plaintext(cli, user, pass, workgroup);
 850         }
 851
 852         /* if the server supports extended security then use SPNEGO */
 853
 854         if (cli->capabilities & CAP_EXTENDED_SECURITY) {
 855                 ADS_STATUS status = cli_session_setup_spnego(cli, user, pass, workgroup);
 856                 if (!ADS_ERR_OK(status)) {
 857                         DEBUG(3, ("SPNEGO login failed: %s\n", ads_errstr(status)));
 858                         return False;
 859                 }
 860                 return True;
 861         }
 862
 863         /* otherwise do a NT1 style session setup */
 864
 865         return cli_session_setup_nt1(cli, user,
 866                                      pass, passlen, ntpass, ntpasslen,
 867                                      workgroup);
 868 }
 869
 870 /****************************************************************************
 871  Send a uloggoff.
 872 *****************************************************************************/
 873
 874 BOOL cli_ulogoff(struct cli_state *cli)
 875 {
 876         memset(cli->outbuf,'\0',smb_size);
 877         set_message(cli->outbuf,2,0,True);
 878         SCVAL(cli->outbuf,smb_com,SMBulogoffX);
 879         cli_setup_packet(cli);
 880         SSVAL(cli->outbuf,smb_vwv0,0xFF);
 881         SSVAL(cli->outbuf,smb_vwv2,0);  /* no additional info */
 882
 883         cli_send_smb(cli);
 884         if (!cli_receive_smb(cli))
 885                 return False;
 886
 887         return !cli_is_error(cli);
 888 }
 889
 890 /****************************************************************************
 891  Send a tconX.
 892 ****************************************************************************/
 893 BOOL cli_send_tconX(struct cli_state *cli,
 894                     const char *share, const char *dev, const char *pass, int passlen)
 895 {
 896         fstring fullshare, pword;
 897         char *p;
 898         memset(cli->outbuf,'\0',smb_size);
 899         memset(cli->inbuf,'\0',smb_size);
 900
 901         fstrcpy(cli->share, share);
 902
 903         /* in user level security don't send a password now */
 904         if (cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) {
 905                 passlen = 1;
 906                 pass = "";
 907         }
 908
 909         if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && *pass && passlen != 24) {
 910                 if (!lp_client_lanman_auth()) {
 911                         DEBUG(1, ("Server requested LANMAN password (share-level security) but 'client use lanman auth'"
 912                                   " is disabled\n"));
 913                         return False;
 914                 }
 915
 916                 /*
 917                  * Non-encrypted passwords - convert to DOS codepage before encryption.
 918                  */
 919                 passlen = 24;
 920                 SMBencrypt(pass,cli->secblob.data,(uchar *)pword);
 921         } else {
 922                 if((cli->sec_mode & (NEGOTIATE_SECURITY_USER_LEVEL|NEGOTIATE_SECURITY_CHALLENGE_RESPONSE)) == 0) {
 923                         if (!lp_client_plaintext_auth() && (*pass)) {
 924                                 DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
 925                                           " is disabled\n"));
 926                                 return False;
 927                         }
 928
 929                         /*
 930                          * Non-encrypted passwords - convert to DOS codepage before using.
 931                          */
 932                         passlen = clistr_push(cli, pword, pass, sizeof(pword), STR_TERMINATE);
 933
 934                 } else {
 935                         memcpy(pword, pass, passlen);
 936                 }
 937         }
 938
 939         slprintf(fullshare, sizeof(fullshare)-1,
 940                  "\\\\%s\\%s", cli->desthost, share);
 941
 942         set_message(cli->outbuf,4, 0, True);
 943         SCVAL(cli->outbuf,smb_com,SMBtconX);
 944         cli_setup_packet(cli);
 945
 946         SSVAL(cli->outbuf,smb_vwv0,0xFF);
 947         SSVAL(cli->outbuf,smb_vwv3,passlen);
 948
 949         p = smb_buf(cli->outbuf);
 950         memcpy(p,pword,passlen);
 951         p += passlen;
 952         p += clistr_push(cli, p, fullshare, -1, STR_TERMINATE |STR_UPPER);
 953         p += clistr_push(cli, p, dev, -1, STR_TERMINATE |STR_UPPER | STR_ASCII);
 954
 955         cli_setup_bcc(cli, p);
 956
 957         cli_send_smb(cli);
 958         if (!cli_receive_smb(cli))
 959                 return False;
 960
 961         if (cli_is_error(cli))
 962                 return False;
 963
 964         clistr_pull(cli, cli->dev, smb_buf(cli->inbuf), sizeof(fstring), -1, STR_TERMINATE|STR_ASCII);
 965
 966         if (cli->protocol >= PROTOCOL_NT1 &&
 967             smb_buflen(cli->inbuf) == 3) {
 968                 /* almost certainly win95 - enable bug fixes */
 969                 cli->win95 = True;
 970         }
 971
 972         cli->cnum = SVAL(cli->inbuf,smb_tid);
 973         return True;
 974 }
 975
 976 /****************************************************************************
 977  Send a tree disconnect.
 978 ****************************************************************************/
 979
 980 BOOL cli_tdis(struct cli_state *cli)
 981 {
 982         memset(cli->outbuf,'\0',smb_size);
 983         set_message(cli->outbuf,0,0,True);
 984         SCVAL(cli->outbuf,smb_com,SMBtdis);
 985         SSVAL(cli->outbuf,smb_tid,cli->cnum);
 986         cli_setup_packet(cli);
 987
 988         cli_send_smb(cli);
 989         if (!cli_receive_smb(cli))
 990                 return False;
 991
 992         return !cli_is_error(cli);
 993 }
 994
 995 /****************************************************************************
 996  Send a negprot command.
 997 ****************************************************************************/
 998
 999 void cli_negprot_send(struct cli_state *cli)
1000 {
1001         char *p;
1002         int numprots;
1003
1004         if (cli->protocol < PROTOCOL_NT1)
1005                 cli->use_spnego = False;
1006
1007         memset(cli->outbuf,'\0',smb_size);
1008
1009         /* setup the protocol strings */
1010         set_message(cli->outbuf,0,0,True);
1011
1012         p = smb_buf(cli->outbuf);
1013         for (numprots=0;
1014              prots[numprots].name && prots[numprots].prot<=cli->protocol;
1015              numprots++) {
1016                 *p++ = 2;
1017                 p += clistr_push(cli, p, prots[numprots].name, -1, STR_TERMINATE);
1018         }
1019
1020         SCVAL(cli->outbuf,smb_com,SMBnegprot);
1021         cli_setup_bcc(cli, p);
1022         cli_setup_packet(cli);
1023
1024         SCVAL(smb_buf(cli->outbuf),0,2);
1025
1026         cli_send_smb(cli);
1027 }
1028
1029 /****************************************************************************
1030  Send a negprot command.
1031 ****************************************************************************/
1032
1033 BOOL cli_negprot(struct cli_state *cli)
1034 {
1035         char *p;
1036         int numprots;
1037         int plength;
1038
1039         if (cli->protocol < PROTOCOL_NT1)
1040                 cli->use_spnego = False;
1041
1042         memset(cli->outbuf,'\0',smb_size);
1043
1044         /* setup the protocol strings */
1045         for (plength=0,numprots=0;
1046              prots[numprots].name && prots[numprots].prot<=cli->protocol;
1047              numprots++)
1048                 plength += strlen(prots[numprots].name)+2;
1049
1050         set_message(cli->outbuf,0,plength,True);
1051
1052         p = smb_buf(cli->outbuf);
1053         for (numprots=0;
1054              prots[numprots].name && prots[numprots].prot<=cli->protocol;
1055              numprots++) {
1056                 *p++ = 2;
1057                 p += clistr_push(cli, p, prots[numprots].name, -1, STR_TERMINATE);
1058         }
1059
1060         SCVAL(cli->outbuf,smb_com,SMBnegprot);
1061         cli_setup_packet(cli);
1062
1063         SCVAL(smb_buf(cli->outbuf),0,2);
1064
1065         cli_send_smb(cli);
1066         if (!cli_receive_smb(cli))
1067                 return False;
1068
1069         show_msg(cli->inbuf);
1070
1071         if (cli_is_error(cli) ||
1072             ((int)SVAL(cli->inbuf,smb_vwv0) >= numprots)) {
1073                 return(False);
1074         }
1075
1076         cli->protocol = prots[SVAL(cli->inbuf,smb_vwv0)].prot;
1077
1078         if ((cli->protocol < PROTOCOL_NT1) && cli->sign_info.mandatory_signing) {
1079                 DEBUG(0,("cli_negprot: SMB signing is mandatory and the selected protocol level doesn't support it.\n"));
1080                 return False;
1081         }
1082
1083         if (cli->protocol >= PROTOCOL_NT1) {
1084                 /* NT protocol */
1085                 cli->sec_mode = CVAL(cli->inbuf,smb_vwv1);
1086                 cli->max_mux = SVAL(cli->inbuf, smb_vwv1+1);
1087                 cli->max_xmit = IVAL(cli->inbuf,smb_vwv3+1);
1088                 cli->sesskey = IVAL(cli->inbuf,smb_vwv7+1);
1089                 cli->serverzone = SVALS(cli->inbuf,smb_vwv15+1);
1090                 cli->serverzone *= 60;
1091                 /* this time arrives in real GMT */
1092                 cli->servertime = interpret_long_date(cli->inbuf+smb_vwv11+1);
1093                 cli->secblob = data_blob(smb_buf(cli->inbuf),smb_buflen(cli->inbuf));
1094                 cli->capabilities = IVAL(cli->inbuf,smb_vwv9+1);
1095                 if (cli->capabilities & CAP_RAW_MODE) {
1096                         cli->readbraw_supported = True;
1097                         cli->writebraw_supported = True;
1098                 }
1099                 /* work out if they sent us a workgroup */
1100                 if (!(cli->capabilities & CAP_EXTENDED_SECURITY) &&
1101                     smb_buflen(cli->inbuf) > 8) {
1102                         clistr_pull(cli, cli->server_domain,
1103                                     smb_buf(cli->inbuf)+8, sizeof(cli->server_domain),
1104                                     smb_buflen(cli->inbuf)-8, STR_UNICODE|STR_NOALIGN);
1105                 }
1106
1107                 /*
1108                  * As signing is slow we only turn it on if either the client or
1109                  * the server require it. JRA.
1110                  */
1111
1112                 if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_REQUIRED) {
1113                         /* Fail if server says signing is mandatory and we don't want to support it. */
1114                         if (!cli->sign_info.allow_smb_signing) {
1115                                 DEBUG(0,("cli_negprot: SMB signing is mandatory and we have disabled it.\n"));
1116                                 return False;
1117                         }
1118                         cli->sign_info.negotiated_smb_signing = True;
1119                         cli->sign_info.mandatory_signing = True;
1120                 } else if (cli->sign_info.mandatory_signing && cli->sign_info.allow_smb_signing) {
1121                         /* Fail if client says signing is mandatory and the server doesn't support it. */
1122                         if (!(cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED)) {
1123                                 DEBUG(1,("cli_negprot: SMB signing is mandatory and the server doesn't support it.\n"));
1124                                 return False;
1125                         }
1126                         cli->sign_info.negotiated_smb_signing = True;
1127                         cli->sign_info.mandatory_signing = True;
1128                 } else if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED) {
1129                         cli->sign_info.negotiated_smb_signing = True;
1130                 }
1131
1132                 if (cli->capabilities & (CAP_LARGE_READX|CAP_LARGE_WRITEX)) {
1133                         SAFE_FREE(cli->outbuf);
1134                         SAFE_FREE(cli->inbuf);
1135                         cli->outbuf = (char *)SMB_MALLOC(CLI_MAX_LARGE_READX_SIZE+SAFETY_MARGIN);
1136                         cli->inbuf = (char *)SMB_MALLOC(CLI_MAX_LARGE_READX_SIZE+SAFETY_MARGIN);
1137                         cli->bufsize = CLI_MAX_LARGE_READX_SIZE;
1138                 }
1139
1140         } else if (cli->protocol >= PROTOCOL_LANMAN1) {
1141                 cli->use_spnego = False;
1142                 cli->sec_mode = SVAL(cli->inbuf,smb_vwv1);
1143                 cli->max_xmit = SVAL(cli->inbuf,smb_vwv2);
1144                 cli->max_mux = SVAL(cli->inbuf, smb_vwv3);
1145                 cli->sesskey = IVAL(cli->inbuf,smb_vwv6);
1146                 cli->serverzone = SVALS(cli->inbuf,smb_vwv10);
1147                 cli->serverzone *= 60;
1148                 /* this time is converted to GMT by make_unix_date */
1149                 cli->servertime = make_unix_date(cli->inbuf+smb_vwv8);
1150                 cli->readbraw_supported = ((SVAL(cli->inbuf,smb_vwv5) & 0x1) != 0);
1151                 cli->writebraw_supported = ((SVAL(cli->inbuf,smb_vwv5) & 0x2) != 0);
1152                 cli->secblob = data_blob(smb_buf(cli->inbuf),smb_buflen(cli->inbuf));
1153         } else {
1154                 /* the old core protocol */
1155                 cli->use_spnego = False;
1156                 cli->sec_mode = 0;
1157                 cli->serverzone = TimeDiff(time(NULL));
1158         }
1159
1160         cli->max_xmit = MIN(cli->max_xmit, CLI_BUFFER_SIZE);
1161
1162         /* a way to force ascii SMB */
1163         if (getenv("CLI_FORCE_ASCII"))
1164                 cli->capabilities &= ~CAP_UNICODE;
1165
1166         return True;
1167 }
1168
1169 /****************************************************************************
1170  Send a session request. See rfc1002.txt 4.3 and 4.3.2.
1171 ****************************************************************************/
1172
1173 BOOL cli_session_request(struct cli_state *cli,
1174                          struct nmb_name *calling, struct nmb_name *called)
1175 {
1176         char *p;
1177         int len = 4;
1178         extern pstring user_socket_options;
1179
1180         memcpy(&(cli->calling), calling, sizeof(*calling));
1181         memcpy(&(cli->called ), called , sizeof(*called ));
1182
1183         /* put in the destination name */
1184         p = cli->outbuf+len;
1185         name_mangle(cli->called .name, p, cli->called .name_type);
1186         len += name_len(p);
1187
1188         /* and my name */
1189         p = cli->outbuf+len;
1190         name_mangle(cli->calling.name, p, cli->calling.name_type);
1191         len += name_len(p);
1192
1193         /* 445 doesn't have session request */
1194         if (cli->port == 445)
1195                 return True;
1196
1197         /* send a session request (RFC 1002) */
1198         /* setup the packet length
1199          * Remove four bytes from the length count, since the length
1200          * field in the NBT Session Service header counts the number
1201          * of bytes which follow.  The cli_send_smb() function knows
1202          * about this and accounts for those four bytes.
1203          * CRH.
1204          */
1205         len -= 4;
1206         _smb_setlen(cli->outbuf,len);
1207         SCVAL(cli->outbuf,0,0x81);
1208
1209         cli_send_smb(cli);
1210         DEBUG(5,("Sent session request\n"));
1211
1212         if (!cli_receive_smb(cli))
1213                 return False;
1214
1215         if (CVAL(cli->inbuf,0) == 0x84) {
1216                 /* C. Hoch  9/14/95 Start */
1217                 /* For information, here is the response structure.
1218                  * We do the byte-twiddling to for portability.
1219                 struct RetargetResponse{
1220                 unsigned char type;
1221                 unsigned char flags;
1222                 int16 length;
1223                 int32 ip_addr;
1224                 int16 port;
1225                 };
1226                 */
1227                 int port = (CVAL(cli->inbuf,8)<<8)+CVAL(cli->inbuf,9);
1228                 /* SESSION RETARGET */
1229                 putip((char *)&cli->dest_ip,cli->inbuf+4);
1230
1231                 cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ip, port, LONG_CONNECT_TIMEOUT);
1232                 if (cli->fd == -1)
1233                         return False;
1234
1235                 DEBUG(3,("Retargeted\n"));
1236
1237                 set_socket_options(cli->fd,user_socket_options);
1238
1239                 /* Try again */
1240                 {
1241                         static int depth;
1242                         BOOL ret;
1243                         if (depth > 4) {
1244                                 DEBUG(0,("Retarget recursion - failing\n"));
1245                                 return False;
1246                         }
1247                         depth++;
1248                         ret = cli_session_request(cli, calling, called);
1249                         depth--;
1250                         return ret;
1251                 }
1252         } /* C. Hoch 9/14/95 End */
1253
1254         if (CVAL(cli->inbuf,0) != 0x82) {
1255                 /* This is the wrong place to put the error... JRA. */
1256                 cli->rap_error = CVAL(cli->inbuf,4);
1257                 return False;
1258         }
1259         return(True);
1260 }
1261
1262 /****************************************************************************
1263  Open the client sockets.
1264 ****************************************************************************/
1265
1266 BOOL cli_connect(struct cli_state *cli, const char *host, struct in_addr *ip)
1267 {
1268         extern pstring user_socket_options;
1269         int name_type = 0x20;
1270         char *p;
1271
1272         /* reasonable default hostname */
1273         if (!host) host = "*SMBSERVER";
1274
1275         fstrcpy(cli->desthost, host);
1276
1277         /* allow hostnames of the form NAME#xx and do a netbios lookup */
1278         if ((p = strchr(cli->desthost, '#'))) {
1279                 name_type = strtol(p+1, NULL, 16);
1280                 *p = 0;
1281         }
1282
1283         if (!ip || is_zero_ip(*ip)) {
1284                 if (!resolve_name(cli->desthost, &cli->dest_ip, name_type)) {
1285                         return False;
1286                 }
1287                 if (ip) *ip = cli->dest_ip;
1288         } else {
1289                 cli->dest_ip = *ip;
1290         }
1291
1292         if (getenv("LIBSMB_PROG")) {
1293                 cli->fd = sock_exec(getenv("LIBSMB_PROG"));
1294         } else {
1295                 /* try 445 first, then 139 */
1296                 int port = cli->port?cli->port:445;
1297                 cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ip,
1298                                           port, cli->timeout);
1299                 if (cli->fd == -1 && cli->port == 0) {
1300                         port = 139;
1301                         cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ip,
1302                                                   port, cli->timeout);
1303                 }
1304                 if (cli->fd != -1)
1305                         cli->port = port;
1306         }
1307         if (cli->fd == -1) {
1308                 DEBUG(1,("Error connecting to %s (%s)\n",
1309                          ip?inet_ntoa(*ip):host,strerror(errno)));
1310                 return False;
1311         }
1312
1313         set_socket_options(cli->fd,user_socket_options);
1314
1315         return True;
1316 }
1317
1318 /****************************************************************************
1319  Initialise client credentials for authenticated pipe access.
1320 ****************************************************************************/
1321
1322 void init_creds(struct ntuser_creds *creds, const char* username,
1323                        const char* domain, const char* password)
1324 {
1325         ZERO_STRUCTP(creds);
1326
1327         pwd_set_cleartext(&creds->pwd, password);
1328
1329         fstrcpy(creds->user_name, username);
1330         fstrcpy(creds->domain, domain);
1331
1332         if (!*username) {
1333                 creds->pwd.null_pwd = True;
1334         }
1335 }
1336
1337 /**
1338    establishes a connection to after the negprot.
1339    @param output_cli A fully initialised cli structure, non-null only on success
1340    @param dest_host The netbios name of the remote host
1341    @param dest_ip (optional) The the destination IP, NULL for name based lookup
1342    @param port (optional) The destination port (0 for default)
1343    @param retry BOOL. Did this connection fail with a retryable error ?
1344
1345 */
1346 NTSTATUS cli_start_connection(struct cli_state **output_cli,
1347                               const char *my_name,
1348                               const char *dest_host,
1349                               struct in_addr *dest_ip, int port,
1350                               int signing_state, int flags,
1351                               BOOL *retry)
1352 {
1353         NTSTATUS nt_status;
1354         struct nmb_name calling;
1355         struct nmb_name called;
1356         struct cli_state *cli;
1357         struct in_addr ip;
1358
1359         if (retry)
1360                 *retry = False;
1361
1362         if (!my_name)
1363                 my_name = global_myname();
1364
1365         if (!(cli = cli_initialise(NULL)))
1366                 return NT_STATUS_NO_MEMORY;
1367
1368         make_nmb_name(&calling, my_name, 0x0);
1369         make_nmb_name(&called , dest_host, 0x20);
1370
1371         if (cli_set_port(cli, port) != port) {
1372                 cli_shutdown(cli);
1373                 return NT_STATUS_UNSUCCESSFUL;
1374         }
1375
1376         cli_set_timeout(cli, 10000); /* 10 seconds. */
1377
1378         if (dest_ip)
1379                 ip = *dest_ip;
1380         else
1381                 ZERO_STRUCT(ip);
1382
1383 again:
1384
1385         DEBUG(3,("Connecting to host=%s\n", dest_host));
1386
1387         if (!cli_connect(cli, dest_host, &ip)) {
1388                 DEBUG(1,("cli_full_connection: failed to connect to %s (%s)\n",
1389                          nmb_namestr(&called), inet_ntoa(ip)));
1390                 cli_shutdown(cli);
1391                 return NT_STATUS_UNSUCCESSFUL;
1392         }
1393
1394         if (retry)
1395                 *retry = True;
1396
1397         if (!cli_session_request(cli, &calling, &called)) {
1398                 char *p;
1399                 DEBUG(1,("session request to %s failed (%s)\n",
1400                          called.name, cli_errstr(cli)));
1401                 if ((p=strchr(called.name, '.')) && !is_ipaddress(called.name)) {
1402                         *p = 0;
1403                         goto again;
1404                 }
1405                 if (strcmp(called.name, "*SMBSERVER")) {
1406                         make_nmb_name(&called , "*SMBSERVER", 0x20);
1407                         goto again;
1408                 }
1409                 return NT_STATUS_UNSUCCESSFUL;
1410         }
1411
1412         cli_setup_signing_state(cli, signing_state);
1413
1414         if (flags & CLI_FULL_CONNECTION_DONT_SPNEGO)
1415                 cli->use_spnego = False;
1416         else if (flags & CLI_FULL_CONNECTION_USE_KERBEROS)
1417                 cli->use_kerberos = True;
1418
1419         if (!cli_negprot(cli)) {
1420                 DEBUG(1,("failed negprot\n"));
1421                 nt_status = NT_STATUS_UNSUCCESSFUL;
1422                 cli_shutdown(cli);
1423                 return nt_status;
1424         }
1425
1426         *output_cli = cli;
1427         return NT_STATUS_OK;
1428 }
1429
1430
1431 /**
1432    establishes a connection right up to doing tconX, password specified.
1433    @param output_cli A fully initialised cli structure, non-null only on success
1434    @param dest_host The netbios name of the remote host
1435    @param dest_ip (optional) The the destination IP, NULL for name based lookup
1436    @param port (optional) The destination port (0 for default)
1437    @param service (optional) The share to make the connection to.  Should be 'unqualified' in any way.
1438    @param service_type The 'type' of serivice.
1439    @param user Username, unix string
1440    @param domain User's domain
1441    @param password User's password, unencrypted unix string.
1442    @param retry BOOL. Did this connection fail with a retryable error ?
1443 */
1444
1445 NTSTATUS cli_full_connection(struct cli_state **output_cli,
1446                              const char *my_name,
1447                              const char *dest_host,
1448                              struct in_addr *dest_ip, int port,
1449                              const char *service, const char *service_type,
1450                              const char *user, const char *domain,
1451                              const char *password, int flags,
1452                              int signing_state,
1453                              BOOL *retry)
1454 {
1455         struct ntuser_creds creds;
1456         NTSTATUS nt_status;
1457         struct cli_state *cli = NULL;
1458
1459         nt_status = cli_start_connection(&cli, my_name, dest_host,
1460                                          dest_ip, port, signing_state, flags, retry);
1461
1462         if (!NT_STATUS_IS_OK(nt_status)) {
1463                 return nt_status;
1464         }
1465
1466         if (!cli_session_setup(cli, user, password, strlen(password)+1,
1467                                password, strlen(password)+1,
1468                                domain)) {
1469                 if ((flags & CLI_FULL_CONNECTION_ANNONYMOUS_FALLBACK)
1470                     && cli_session_setup(cli, "", "", 0, "", 0, domain)) {
1471                 } else {
1472                         nt_status = cli_nt_error(cli);
1473                         DEBUG(1,("failed session setup with %s\n", nt_errstr(nt_status)));
1474                         cli_shutdown(cli);
1475                         if (NT_STATUS_IS_OK(nt_status))
1476                                 nt_status = NT_STATUS_UNSUCCESSFUL;
1477                         return nt_status;
1478                 }
1479         }
1480
1481         if (service) {
1482                 if (!cli_send_tconX(cli, service, service_type,
1483                                     password, strlen(password)+1)) {
1484                         nt_status = cli_nt_error(cli);
1485                         DEBUG(1,("failed tcon_X with %s\n", nt_errstr(nt_status)));
1486                         cli_shutdown(cli);
1487                         if (NT_STATUS_IS_OK(nt_status)) {
1488                                 nt_status = NT_STATUS_UNSUCCESSFUL;
1489                         }
1490                         return nt_status;
1491                 }
1492         }
1493
1494         init_creds(&creds, user, domain, password);
1495         cli_init_creds(cli, &creds);
1496
1497         *output_cli = cli;
1498         return NT_STATUS_OK;
1499 }
1500
1501 /****************************************************************************
1502  Attempt a NetBIOS session request, falling back to *SMBSERVER if needed.
1503 ****************************************************************************/
1504
1505 BOOL attempt_netbios_session_request(struct cli_state *cli, const char *srchost, const char *desthost,
1506                                      struct in_addr *pdest_ip)
1507 {
1508         struct nmb_name calling, called;
1509
1510         make_nmb_name(&calling, srchost, 0x0);
1511
1512         /*
1513          * If the called name is an IP address
1514          * then use *SMBSERVER immediately.
1515          */
1516
1517         if(is_ipaddress(desthost))
1518                 make_nmb_name(&called, "*SMBSERVER", 0x20);
1519         else
1520                 make_nmb_name(&called, desthost, 0x20);
1521
1522         if (!cli_session_request(cli, &calling, &called)) {
1523                 struct nmb_name smbservername;
1524
1525                 make_nmb_name(&smbservername , "*SMBSERVER", 0x20);
1526
1527                 /*
1528                  * If the name wasn't *SMBSERVER then
1529                  * try with *SMBSERVER if the first name fails.
1530                  */
1531
1532                 if (nmb_name_equal(&called, &smbservername)) {
1533
1534                         /*
1535                          * The name used was *SMBSERVER, don't bother with another name.
1536                          */
1537
1538                         DEBUG(0,("attempt_netbios_session_request: %s rejected the session for name *SMBSERVER \
1539 with error %s.\n", desthost, cli_errstr(cli) ));
1540                         return False;
1541                 }
1542
1543                 /*
1544                  * We need to close the connection here but can't call cli_shutdown as
1545                  * will free an allocated cli struct. cli_close_connection was invented
1546                  * for this purpose. JRA. Based on work by "Kim R. Pedersen" <krp@filanet.dk>.
1547                  */
1548
1549                 cli_close_connection(cli);
1550
1551                 if (!cli_initialise(cli) ||
1552                                 !cli_connect(cli, desthost, pdest_ip) ||
1553                                 !cli_session_request(cli, &calling, &smbservername)) {
1554                         DEBUG(0,("attempt_netbios_session_request: %s rejected the session for \
1555 name *SMBSERVER with error %s\n", desthost, cli_errstr(cli) ));
1556                         return False;
1557                 }
1558         }
1559
1560         return True;
1561 }
1562
1563
1564
1565
1566
1567 /****************************************************************************
1568  Send an old style tcon.
1569 ****************************************************************************/
1570 NTSTATUS cli_raw_tcon(struct cli_state *cli,
1571                       const char *service, const char *pass, const char *dev,
1572                       uint16 *max_xmit, uint16 *tid)
1573 {
1574         char *p;
1575
1576         if (!lp_client_plaintext_auth() && (*pass)) {
1577                 DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
1578                           " is disabled\n"));
1579                 return NT_STATUS_ACCESS_DENIED;
1580         }
1581
1582         memset(cli->outbuf,'\0',smb_size);
1583         memset(cli->inbuf,'\0',smb_size);
1584
1585         set_message(cli->outbuf, 0, 0, True);
1586         SCVAL(cli->outbuf,smb_com,SMBtcon);
1587         cli_setup_packet(cli);
1588
1589         p = smb_buf(cli->outbuf);
1590         *p++ = 4; p += clistr_push(cli, p, service, -1, STR_TERMINATE | STR_NOALIGN);
1591         *p++ = 4; p += clistr_push(cli, p, pass, -1, STR_TERMINATE | STR_NOALIGN);
1592         *p++ = 4; p += clistr_push(cli, p, dev, -1, STR_TERMINATE | STR_NOALIGN);
1593
1594         cli_setup_bcc(cli, p);
1595
1596         cli_send_smb(cli);
1597         if (!cli_receive_smb(cli)) {
1598                 return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
1599         }
1600
1601         if (cli_is_error(cli)) {
1602                 return cli_nt_error(cli);
1603         }
1604
1605         *max_xmit = SVAL(cli->inbuf, smb_vwv0);
1606         *tid = SVAL(cli->inbuf, smb_vwv1);
1607
1608         return NT_STATUS_OK;
1609 }
1610
1611 /* Return a cli_state pointing at the IPC$ share for the given server */
1612
1613 struct cli_state *get_ipc_connect(char *server, struct in_addr *server_ip,
1614                                          struct user_auth_info *user_info)
1615 {
1616         struct cli_state *cli;
1617         pstring myname;
1618         NTSTATUS nt_status;
1619
1620         get_myname(myname);
1621
1622         nt_status = cli_full_connection(&cli, myname, server, server_ip, 0, "IPC$", "IPC",
1623                                         user_info->username, lp_workgroup(), user_info->password,
1624                                         CLI_FULL_CONNECTION_ANNONYMOUS_FALLBACK, Undefined, NULL);
1625
1626         if (NT_STATUS_IS_OK(nt_status)) {
1627                 return cli;
1628         } else if (is_ipaddress(server)) {
1629             /* windows 9* needs a correct NMB name for connections */
1630             fstring remote_name;
1631
1632             if (name_status_find("*", 0, 0, *server_ip, remote_name)) {
1633                 cli = get_ipc_connect(remote_name, server_ip, user_info);
1634                 if (cli)
1635                     return cli;
1636             }
1637         }
1638         return NULL;
1639 }
1640
1641 /*
1642  * Given the IP address of a master browser on the network, return its
1643  * workgroup and connect to it.
1644  *
1645  * This function is provided to allow additional processing beyond what
1646  * get_ipc_connect_master_ip_bcast() does, e.g. to retrieve the list of master
1647  * browsers and obtain each master browsers' list of domains (in case the
1648  * first master browser is recently on the network and has not yet
1649  * synchronized with other master browsers and therefore does not yet have the
1650  * entire network browse list)
1651  */
1652
1653 struct cli_state *get_ipc_connect_master_ip(struct ip_service * mb_ip, pstring workgroup, struct user_auth_info *user_info)
1654 {
1655         static fstring name;
1656         struct cli_state *cli;
1657         struct in_addr server_ip;
1658
1659         DEBUG(99, ("Looking up name of master browser %s\n",
1660                    inet_ntoa(mb_ip->ip)));
1661
1662         /*
1663          * Do a name status query to find out the name of the master browser.
1664          * We use <01><02>__MSBROWSE__<02>#01 if *#00 fails because a domain
1665          * master browser will not respond to a wildcard query (or, at least,
1666          * an NT4 server acting as the domain master browser will not).
1667          *
1668          * We might be able to use ONLY the query on MSBROWSE, but that's not
1669          * yet been tested with all Windows versions, so until it is, leave
1670          * the original wildcard query as the first choice and fall back to
1671          * MSBROWSE if the wildcard query fails.
1672          */
1673         if (!name_status_find("*", 0, 0x1d, mb_ip->ip, name) &&
1674             !name_status_find(MSBROWSE, 1, 0x1d, mb_ip->ip, name)) {
1675
1676                 DEBUG(99, ("Could not retrieve name status for %s\n",
1677                            inet_ntoa(mb_ip->ip)));
1678                 return NULL;
1679         }
1680
1681         if (!find_master_ip(name, &server_ip)) {
1682                 DEBUG(99, ("Could not find master ip for %s\n", name));
1683                 return NULL;
1684         }
1685
1686                 pstrcpy(workgroup, name);
1687
1688                 DEBUG(4, ("found master browser %s, %s\n",
1689                   name, inet_ntoa(mb_ip->ip)));
1690
1691                 cli = get_ipc_connect(inet_ntoa(server_ip), &server_ip, user_info);
1692
1693                 return cli;
1694
1695 }
1696
1697 /*
1698  * Return the IP address and workgroup of a master browser on the network, and
1699  * connect to it.
1700  */
1701
1702 struct cli_state *get_ipc_connect_master_ip_bcast(pstring workgroup, struct user_auth_info *user_info)
1703 {
1704         struct ip_service *ip_list;
1705         struct cli_state *cli;
1706         int i, count;
1707
1708         DEBUG(99, ("Do broadcast lookup for workgroups on local network\n"));
1709
1710         /* Go looking for workgroups by broadcasting on the local network */
1711
1712         if (!name_resolve_bcast(MSBROWSE, 1, &ip_list, &count)) {
1713                 DEBUG(99, ("No master browsers responded\n"));
1714                 return False;
1715         }
1716
1717         for (i = 0; i < count; i++) {
1718             DEBUG(99, ("Found master browser %s\n", inet_ntoa(ip_list[i].ip)));
1719
1720             cli = get_ipc_connect_master_ip(&ip_list[i], workgroup, user_info);
1721             if (cli)
1722                     return(cli);
1723         }
1724
1725         return NULL;
1726 }