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         if (cli->capabilities & CAP_UNICODE)
 155                 capabilities |= CAP_UNICODE;
 156
 157         if (cli->capabilities & CAP_LARGE_FILES)
 158                 capabilities |= CAP_LARGE_FILES;
 159
 160         return capabilities;
 161 }
 162
 163 /****************************************************************************
 164  Do a NT1 guest session setup.
 165 ****************************************************************************/
 166
 167 static BOOL cli_session_setup_guest(struct cli_state *cli)
 168 {
 169         char *p;
 170         uint32 capabilities = cli_session_setup_capabilities(cli);
 171
 172         set_message(cli->outbuf,13,0,True);
 173         SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
 174         cli_setup_packet(cli);
 175
 176         SCVAL(cli->outbuf,smb_vwv0,0xFF);
 177         SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
 178         SSVAL(cli->outbuf,smb_vwv3,2);
 179         SSVAL(cli->outbuf,smb_vwv4,cli->pid);
 180         SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
 181         SSVAL(cli->outbuf,smb_vwv7,0);
 182         SSVAL(cli->outbuf,smb_vwv8,0);
 183         SIVAL(cli->outbuf,smb_vwv11,capabilities);
 184         p = smb_buf(cli->outbuf);
 185         p += clistr_push(cli, p, "", -1, STR_TERMINATE); /* username */
 186         p += clistr_push(cli, p, "", -1, STR_TERMINATE); /* workgroup */
 187         p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
 188         p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
 189         cli_setup_bcc(cli, p);
 190
 191         cli_send_smb(cli);
 192         if (!cli_receive_smb(cli))
 193               return False;
 194
 195         show_msg(cli->inbuf);
 196
 197         if (cli_is_error(cli))
 198                 return False;
 199
 200         cli->vuid = SVAL(cli->inbuf,smb_uid);
 201
 202         p = smb_buf(cli->inbuf);
 203         p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
 204         p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
 205         p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
 206
 207         fstrcpy(cli->user_name, "");
 208
 209         return True;
 210 }
 211
 212 /****************************************************************************
 213  Do a NT1 plaintext session setup.
 214 ****************************************************************************/
 215
 216 static BOOL cli_session_setup_plaintext(struct cli_state *cli, const char *user,
 217                                         const char *pass, const char *workgroup)
 218 {
 219         uint32 capabilities = cli_session_setup_capabilities(cli);
 220         char *p;
 221         fstring lanman;
 222
 223         fstr_sprintf( lanman, "Samba %s", SAMBA_VERSION_STRING);
 224
 225         set_message(cli->outbuf,13,0,True);
 226         SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
 227         cli_setup_packet(cli);
 228
 229         SCVAL(cli->outbuf,smb_vwv0,0xFF);
 230         SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
 231         SSVAL(cli->outbuf,smb_vwv3,2);
 232         SSVAL(cli->outbuf,smb_vwv4,cli->pid);
 233         SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
 234         SSVAL(cli->outbuf,smb_vwv8,0);
 235         SIVAL(cli->outbuf,smb_vwv11,capabilities);
 236         p = smb_buf(cli->outbuf);
 237
 238         /* check wether to send the ASCII or UNICODE version of the password */
 239
 240         if ( (capabilities & CAP_UNICODE) == 0 ) {
 241                 p += clistr_push(cli, p, pass, -1, STR_TERMINATE); /* password */
 242                 SSVAL(cli->outbuf,smb_vwv7,PTR_DIFF(p, smb_buf(cli->outbuf)));
 243         }
 244         else {
 245                 p += clistr_push(cli, p, pass, -1, STR_UNICODE|STR_TERMINATE); /* unicode password */
 246                 SSVAL(cli->outbuf,smb_vwv8,PTR_DIFF(p, smb_buf(cli->outbuf)));
 247         }
 248
 249         p += clistr_push(cli, p, user, -1, STR_TERMINATE); /* username */
 250         p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE); /* workgroup */
 251         p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
 252         p += clistr_push(cli, p, lanman, -1, STR_TERMINATE);
 253         cli_setup_bcc(cli, p);
 254
 255         cli_send_smb(cli);
 256         if (!cli_receive_smb(cli))
 257               return False;
 258
 259         show_msg(cli->inbuf);
 260
 261         if (cli_is_error(cli))
 262                 return False;
 263
 264         cli->vuid = SVAL(cli->inbuf,smb_uid);
 265         p = smb_buf(cli->inbuf);
 266         p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
 267         p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
 268         p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
 269         fstrcpy(cli->user_name, user);
 270
 271         return True;
 272 }
 273
 274 /****************************************************************************
 275    do a NT1 NTLM/LM encrypted session setup - for when extended security
 276    is not negotiated.
 277    @param cli client state to create do session setup on
 278    @param user username
 279    @param pass *either* cleartext password (passlen !=24) or LM response.
 280    @param ntpass NT response, implies ntpasslen >=24, implies pass is not clear
 281    @param workgroup The user's domain.
 282 ****************************************************************************/
 283
 284 static BOOL cli_session_setup_nt1(struct cli_state *cli, const char *user,
 285                                   const char *pass, size_t passlen,
 286                                   const char *ntpass, size_t ntpasslen,
 287                                   const char *workgroup)
 288 {
 289         uint32 capabilities = cli_session_setup_capabilities(cli);
 290         DATA_BLOB lm_response = data_blob(NULL, 0);
 291         DATA_BLOB nt_response = data_blob(NULL, 0);
 292         DATA_BLOB session_key = data_blob(NULL, 0);
 293         BOOL ret = False;
 294         char *p;
 295
 296         if (passlen == 0) {
 297                 /* do nothing - guest login */
 298         } else if (passlen != 24) {
 299                 if (lp_client_ntlmv2_auth()) {
 300                         DATA_BLOB server_chal;
 301                         DATA_BLOB names_blob;
 302                         server_chal = data_blob(cli->secblob.data, MIN(cli->secblob.length, 8));
 303
 304                         /* note that the 'workgroup' here is a best guess - we don't know
 305                            the server's domain at this point.  The 'server name' is also
 306                            dodgy...
 307                         */
 308                         names_blob = NTLMv2_generate_names_blob(cli->called.name, workgroup);
 309
 310                         if (!SMBNTLMv2encrypt(user, workgroup, pass, &server_chal,
 311                                               &names_blob,
 312                                               &lm_response, &nt_response, &session_key)) {
 313                                 data_blob_free(&names_blob);
 314                                 data_blob_free(&server_chal);
 315                                 return False;
 316                         }
 317                         data_blob_free(&names_blob);
 318                         data_blob_free(&server_chal);
 319
 320                 } else {
 321                         uchar nt_hash[16];
 322                         E_md4hash(pass, nt_hash);
 323
 324 #ifdef LANMAN_ONLY
 325                         nt_response = data_blob(NULL, 0);
 326 #else
 327                         nt_response = data_blob(NULL, 24);
 328                         SMBNTencrypt(pass,cli->secblob.data,nt_response.data);
 329 #endif
 330                         /* non encrypted password supplied. Ignore ntpass. */
 331                         if (lp_client_lanman_auth()) {
 332                                 lm_response = data_blob(NULL, 24);
 333                                 if (!SMBencrypt(pass,cli->secblob.data, lm_response.data)) {
 334                                         /* Oops, the LM response is invalid, just put
 335                                            the NT response there instead */
 336                                         data_blob_free(&lm_response);
 337                                         lm_response = data_blob(nt_response.data, nt_response.length);
 338                                 }
 339                         } else {
 340                                 /* LM disabled, place NT# in LM field instead */
 341                                 lm_response = data_blob(nt_response.data, nt_response.length);
 342                         }
 343
 344                         session_key = data_blob(NULL, 16);
 345 #ifdef LANMAN_ONLY
 346                         E_deshash(pass, session_key.data);
 347                         memset(&session_key.data[8], '\0', 8);
 348 #else
 349                         SMBsesskeygen_ntv1(nt_hash, NULL, session_key.data);
 350 #endif
 351                 }
 352 #ifdef LANMAN_ONLY
 353                 cli_simple_set_signing(cli, session_key, lm_response);
 354 #else
 355                 cli_simple_set_signing(cli, session_key, nt_response);
 356 #endif
 357         } else {
 358                 /* pre-encrypted password supplied.  Only used for
 359                    security=server, can't do
 360                    signing because we don't have original key */
 361
 362                 lm_response = data_blob(pass, passlen);
 363                 nt_response = data_blob(ntpass, ntpasslen);
 364         }
 365
 366         /* send a session setup command */
 367         memset(cli->outbuf,'\0',smb_size);
 368
 369         set_message(cli->outbuf,13,0,True);
 370         SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
 371         cli_setup_packet(cli);
 372
 373         SCVAL(cli->outbuf,smb_vwv0,0xFF);
 374         SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
 375         SSVAL(cli->outbuf,smb_vwv3,2);
 376         SSVAL(cli->outbuf,smb_vwv4,cli->pid);
 377         SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
 378         SSVAL(cli->outbuf,smb_vwv7,lm_response.length);
 379         SSVAL(cli->outbuf,smb_vwv8,nt_response.length);
 380         SIVAL(cli->outbuf,smb_vwv11,capabilities);
 381         p = smb_buf(cli->outbuf);
 382         if (lm_response.length) {
 383                 memcpy(p,lm_response.data, lm_response.length); p += lm_response.length;
 384         }
 385         if (nt_response.length) {
 386                 memcpy(p,nt_response.data, nt_response.length); p += nt_response.length;
 387         }
 388         p += clistr_push(cli, p, user, -1, STR_TERMINATE);
 389
 390         /* Upper case here might help some NTLMv2 implementations */
 391         p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE|STR_UPPER);
 392         p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
 393         p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
 394         cli_setup_bcc(cli, p);
 395
 396         if (!cli_send_smb(cli) || !cli_receive_smb(cli)) {
 397                 ret = False;
 398                 goto end;
 399         }
 400
 401         /* show_msg(cli->inbuf); */
 402
 403         if (cli_is_error(cli)) {
 404                 ret = False;
 405                 goto end;
 406         }
 407
 408         /* use the returned vuid from now on */
 409         cli->vuid = SVAL(cli->inbuf,smb_uid);
 410
 411         p = smb_buf(cli->inbuf);
 412         p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
 413         p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
 414         p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
 415
 416         fstrcpy(cli->user_name, user);
 417
 418         if (session_key.data) {
 419                 /* Have plaintext orginal */
 420                 cli_set_session_key(cli, session_key);
 421         }
 422
 423         ret = True;
 424 end:
 425         data_blob_free(&lm_response);
 426         data_blob_free(&nt_response);
 427         data_blob_free(&session_key);
 428         return ret;
 429 }
 430
 431 /****************************************************************************
 432  Send a extended security session setup blob
 433 ****************************************************************************/
 434
 435 static BOOL cli_session_setup_blob_send(struct cli_state *cli, DATA_BLOB blob)
 436 {
 437         uint32 capabilities = cli_session_setup_capabilities(cli);
 438         char *p;
 439
 440         capabilities |= CAP_EXTENDED_SECURITY;
 441
 442         /* send a session setup command */
 443         memset(cli->outbuf,'\0',smb_size);
 444
 445         set_message(cli->outbuf,12,0,True);
 446         SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
 447
 448         cli_setup_packet(cli);
 449
 450         SCVAL(cli->outbuf,smb_vwv0,0xFF);
 451         SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
 452         SSVAL(cli->outbuf,smb_vwv3,2);
 453         SSVAL(cli->outbuf,smb_vwv4,1);
 454         SIVAL(cli->outbuf,smb_vwv5,0);
 455         SSVAL(cli->outbuf,smb_vwv7,blob.length);
 456         SIVAL(cli->outbuf,smb_vwv10,capabilities);
 457         p = smb_buf(cli->outbuf);
 458         memcpy(p, blob.data, blob.length);
 459         p += blob.length;
 460         p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
 461         p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
 462         cli_setup_bcc(cli, p);
 463         return cli_send_smb(cli);
 464 }
 465
 466 /****************************************************************************
 467  Send a extended security session setup blob, returning a reply blob.
 468 ****************************************************************************/
 469
 470 static DATA_BLOB cli_session_setup_blob_receive(struct cli_state *cli)
 471 {
 472         DATA_BLOB blob2 = data_blob(NULL, 0);
 473         char *p;
 474         size_t len;
 475
 476         if (!cli_receive_smb(cli))
 477                 return blob2;
 478
 479         show_msg(cli->inbuf);
 480
 481         if (cli_is_error(cli) && !NT_STATUS_EQUAL(cli_nt_error(cli),
 482                                                   NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 483                 return blob2;
 484         }
 485
 486         /* use the returned vuid from now on */
 487         cli->vuid = SVAL(cli->inbuf,smb_uid);
 488
 489         p = smb_buf(cli->inbuf);
 490
 491         blob2 = data_blob(p, SVAL(cli->inbuf, smb_vwv3));
 492
 493         p += blob2.length;
 494         p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
 495
 496         /* w2k with kerberos doesn't properly null terminate this field */
 497         len = smb_buflen(cli->inbuf) - PTR_DIFF(p, smb_buf(cli->inbuf));
 498         p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), len, 0);
 499
 500         return blob2;
 501 }
 502
 503 #ifdef HAVE_KRB5
 504
 505 /****************************************************************************
 506  Send a extended security session setup blob, returning a reply blob.
 507 ****************************************************************************/
 508
 509 static DATA_BLOB cli_session_setup_blob(struct cli_state *cli, DATA_BLOB blob)
 510 {
 511         DATA_BLOB blob2 = data_blob(NULL, 0);
 512         if (!cli_session_setup_blob_send(cli, blob)) {
 513                 return blob2;
 514         }
 515
 516         return cli_session_setup_blob_receive(cli);
 517 }
 518
 519 /****************************************************************************
 520  Use in-memory credentials cache
 521 ****************************************************************************/
 522
 523 static void use_in_memory_ccache(void) {
 524         setenv(KRB5_ENV_CCNAME, "MEMORY:cliconnect", 1);
 525 }
 526
 527 /****************************************************************************
 528  Do a spnego/kerberos encrypted session setup.
 529 ****************************************************************************/
 530
 531 static ADS_STATUS cli_session_setup_kerberos(struct cli_state *cli, const char *principal, const char *workgroup)
 532 {
 533         DATA_BLOB blob2, negTokenTarg;
 534         DATA_BLOB session_key_krb5;
 535         DATA_BLOB null_blob = data_blob(NULL, 0);
 536         int rc;
 537
 538         DEBUG(2,("Doing kerberos session setup\n"));
 539
 540         /* generate the encapsulated kerberos5 ticket */
 541         rc = spnego_gen_negTokenTarg(principal, 0, &negTokenTarg, &session_key_krb5);
 542
 543         if (rc) {
 544                 DEBUG(1, ("spnego_gen_negTokenTarg failed: %s\n", error_message(rc)));
 545                 return ADS_ERROR_KRB5(rc);
 546         }
 547
 548 #if 0
 549         file_save("negTokenTarg.dat", negTokenTarg.data, negTokenTarg.length);
 550 #endif
 551
 552         cli_simple_set_signing(cli, session_key_krb5, null_blob);
 553
 554         blob2 = cli_session_setup_blob(cli, negTokenTarg);
 555
 556         /* we don't need this blob for kerberos */
 557         data_blob_free(&blob2);
 558
 559         cli_set_session_key(cli, session_key_krb5);
 560
 561         data_blob_free(&negTokenTarg);
 562         data_blob_free(&session_key_krb5);
 563
 564         if (cli_is_error(cli)) {
 565                 if (NT_STATUS_IS_OK(cli_nt_error(cli))) {
 566                         return ADS_ERROR_NT(NT_STATUS_UNSUCCESSFUL);
 567                 }
 568         }
 569         return ADS_ERROR_NT(cli_nt_error(cli));
 570 }
 571 #endif  /* HAVE_KRB5 */
 572
 573
 574 /****************************************************************************
 575  Do a spnego/NTLMSSP encrypted session setup.
 576 ****************************************************************************/
 577
 578 static NTSTATUS cli_session_setup_ntlmssp(struct cli_state *cli, const char *user,
 579                                           const char *pass, const char *domain)
 580 {
 581         struct ntlmssp_state *ntlmssp_state;
 582         NTSTATUS nt_status;
 583         int turn = 1;
 584         DATA_BLOB msg1;
 585         DATA_BLOB blob = data_blob(NULL, 0);
 586         DATA_BLOB blob_in = data_blob(NULL, 0);
 587         DATA_BLOB blob_out = data_blob(NULL, 0);
 588
 589         cli_temp_set_signing(cli);
 590
 591         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_client_start(&ntlmssp_state))) {
 592                 return nt_status;
 593         }
 594
 595         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_username(ntlmssp_state, user))) {
 596                 return nt_status;
 597         }
 598         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_domain(ntlmssp_state, domain))) {
 599                 return nt_status;
 600         }
 601         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_password(ntlmssp_state, pass))) {
 602                 return nt_status;
 603         }
 604
 605         do {
 606                 nt_status = ntlmssp_update(ntlmssp_state,
 607                                                   blob_in, &blob_out);
 608                 data_blob_free(&blob_in);
 609                 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 610                         if (turn == 1) {
 611                                 /* and wrap it in a SPNEGO wrapper */
 612                                 msg1 = gen_negTokenInit(OID_NTLMSSP, blob_out);
 613                         } else {
 614                                 /* wrap it in SPNEGO */
 615                                 msg1 = spnego_gen_auth(blob_out);
 616                         }
 617
 618                         /* now send that blob on its way */
 619                         if (!cli_session_setup_blob_send(cli, msg1)) {
 620                                 DEBUG(3, ("Failed to send NTLMSSP/SPNEGO blob to server!\n"));
 621                                 nt_status = NT_STATUS_UNSUCCESSFUL;
 622                         } else {
 623                                 data_blob_free(&msg1);
 624
 625                                 blob = cli_session_setup_blob_receive(cli);
 626
 627                                 nt_status = cli_nt_error(cli);
 628                                 if (cli_is_error(cli) && NT_STATUS_IS_OK(nt_status)) {
 629                                         if (cli->smb_rw_error == READ_BAD_SIG) {
 630                                                 nt_status = NT_STATUS_ACCESS_DENIED;
 631                                         } else {
 632                                                 nt_status = NT_STATUS_UNSUCCESSFUL;
 633                                         }
 634                                 }
 635                         }
 636                 }
 637
 638                 if (!blob.length) {
 639                         if (NT_STATUS_IS_OK(nt_status)) {
 640                                 nt_status = NT_STATUS_UNSUCCESSFUL;
 641                         }
 642                 } else if ((turn == 1) &&
 643                            NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 644                         DATA_BLOB tmp_blob = data_blob(NULL, 0);
 645                         /* the server might give us back two challenges */
 646                         if (!spnego_parse_challenge(blob, &blob_in,
 647                                                     &tmp_blob)) {
 648                                 DEBUG(3,("Failed to parse challenges\n"));
 649                                 nt_status = NT_STATUS_INVALID_PARAMETER;
 650                         }
 651                         data_blob_free(&tmp_blob);
 652                 } else {
 653                         if (!spnego_parse_auth_response(blob, nt_status,
 654                                                         &blob_in)) {
 655                                 DEBUG(3,("Failed to parse auth response\n"));
 656                                 if (NT_STATUS_IS_OK(nt_status)
 657                                     || NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED))
 658                                         nt_status = NT_STATUS_INVALID_PARAMETER;
 659                         }
 660                 }
 661                 data_blob_free(&blob);
 662                 data_blob_free(&blob_out);
 663                 turn++;
 664         } while (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED));
 665
 666         if (NT_STATUS_IS_OK(nt_status)) {
 667
 668                 DATA_BLOB key = data_blob(ntlmssp_state->session_key.data,
 669                                           ntlmssp_state->session_key.length);
 670                 DATA_BLOB null_blob = data_blob(NULL, 0);
 671
 672                 fstrcpy(cli->server_domain, ntlmssp_state->server_domain);
 673                 cli_set_session_key(cli, ntlmssp_state->session_key);
 674
 675                 if (cli_simple_set_signing(cli, key, null_blob)) {
 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);
 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         } else if (cli->protocol >= PROTOCOL_LANMAN1) {
1133                 cli->use_spnego = False;
1134                 cli->sec_mode = SVAL(cli->inbuf,smb_vwv1);
1135                 cli->max_xmit = SVAL(cli->inbuf,smb_vwv2);
1136                 cli->sesskey = IVAL(cli->inbuf,smb_vwv6);
1137                 cli->serverzone = SVALS(cli->inbuf,smb_vwv10);
1138                 cli->serverzone *= 60;
1139                 /* this time is converted to GMT by make_unix_date */
1140                 cli->servertime = make_unix_date(cli->inbuf+smb_vwv8);
1141                 cli->readbraw_supported = ((SVAL(cli->inbuf,smb_vwv5) & 0x1) != 0);
1142                 cli->writebraw_supported = ((SVAL(cli->inbuf,smb_vwv5) & 0x2) != 0);
1143                 cli->secblob = data_blob(smb_buf(cli->inbuf),smb_buflen(cli->inbuf));
1144         } else {
1145                 /* the old core protocol */
1146                 cli->use_spnego = False;
1147                 cli->sec_mode = 0;
1148                 cli->serverzone = TimeDiff(time(NULL));
1149         }
1150
1151         cli->max_xmit = MIN(cli->max_xmit, CLI_BUFFER_SIZE);
1152
1153         /* a way to force ascii SMB */
1154         if (getenv("CLI_FORCE_ASCII"))
1155                 cli->capabilities &= ~CAP_UNICODE;
1156
1157         return True;
1158 }
1159
1160 /****************************************************************************
1161  Send a session request. See rfc1002.txt 4.3 and 4.3.2.
1162 ****************************************************************************/
1163
1164 BOOL cli_session_request(struct cli_state *cli,
1165                          struct nmb_name *calling, struct nmb_name *called)
1166 {
1167         char *p;
1168         int len = 4;
1169         extern pstring user_socket_options;
1170
1171         memcpy(&(cli->calling), calling, sizeof(*calling));
1172         memcpy(&(cli->called ), called , sizeof(*called ));
1173
1174         /* put in the destination name */
1175         p = cli->outbuf+len;
1176         name_mangle(cli->called .name, p, cli->called .name_type);
1177         len += name_len(p);
1178
1179         /* and my name */
1180         p = cli->outbuf+len;
1181         name_mangle(cli->calling.name, p, cli->calling.name_type);
1182         len += name_len(p);
1183
1184         /* 445 doesn't have session request */
1185         if (cli->port == 445)
1186                 return True;
1187
1188         /* send a session request (RFC 1002) */
1189         /* setup the packet length
1190          * Remove four bytes from the length count, since the length
1191          * field in the NBT Session Service header counts the number
1192          * of bytes which follow.  The cli_send_smb() function knows
1193          * about this and accounts for those four bytes.
1194          * CRH.
1195          */
1196         len -= 4;
1197         _smb_setlen(cli->outbuf,len);
1198         SCVAL(cli->outbuf,0,0x81);
1199
1200         cli_send_smb(cli);
1201         DEBUG(5,("Sent session request\n"));
1202
1203         if (!cli_receive_smb(cli))
1204                 return False;
1205
1206         if (CVAL(cli->inbuf,0) == 0x84) {
1207                 /* C. Hoch  9/14/95 Start */
1208                 /* For information, here is the response structure.
1209                  * We do the byte-twiddling to for portability.
1210                 struct RetargetResponse{
1211                 unsigned char type;
1212                 unsigned char flags;
1213                 int16 length;
1214                 int32 ip_addr;
1215                 int16 port;
1216                 };
1217                 */
1218                 int port = (CVAL(cli->inbuf,8)<<8)+CVAL(cli->inbuf,9);
1219                 /* SESSION RETARGET */
1220                 putip((char *)&cli->dest_ip,cli->inbuf+4);
1221
1222                 cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ip, port, LONG_CONNECT_TIMEOUT);
1223                 if (cli->fd == -1)
1224                         return False;
1225
1226                 DEBUG(3,("Retargeted\n"));
1227
1228                 set_socket_options(cli->fd,user_socket_options);
1229
1230                 /* Try again */
1231                 {
1232                         static int depth;
1233                         BOOL ret;
1234                         if (depth > 4) {
1235                                 DEBUG(0,("Retarget recursion - failing\n"));
1236                                 return False;
1237                         }
1238                         depth++;
1239                         ret = cli_session_request(cli, calling, called);
1240                         depth--;
1241                         return ret;
1242                 }
1243         } /* C. Hoch 9/14/95 End */
1244
1245         if (CVAL(cli->inbuf,0) != 0x82) {
1246                 /* This is the wrong place to put the error... JRA. */
1247                 cli->rap_error = CVAL(cli->inbuf,4);
1248                 return False;
1249         }
1250         return(True);
1251 }
1252
1253 /****************************************************************************
1254  Open the client sockets.
1255 ****************************************************************************/
1256
1257 BOOL cli_connect(struct cli_state *cli, const char *host, struct in_addr *ip)
1258 {
1259         extern pstring user_socket_options;
1260         int name_type = 0x20;
1261         char *p;
1262
1263         /* reasonable default hostname */
1264         if (!host) host = "*SMBSERVER";
1265
1266         fstrcpy(cli->desthost, host);
1267
1268         /* allow hostnames of the form NAME#xx and do a netbios lookup */
1269         if ((p = strchr(cli->desthost, '#'))) {
1270                 name_type = strtol(p+1, NULL, 16);
1271                 *p = 0;
1272         }
1273
1274         if (!ip || is_zero_ip(*ip)) {
1275                 if (!resolve_name(cli->desthost, &cli->dest_ip, name_type)) {
1276                         return False;
1277                 }
1278                 if (ip) *ip = cli->dest_ip;
1279         } else {
1280                 cli->dest_ip = *ip;
1281         }
1282
1283         if (getenv("LIBSMB_PROG")) {
1284                 cli->fd = sock_exec(getenv("LIBSMB_PROG"));
1285         } else {
1286                 /* try 445 first, then 139 */
1287                 int port = cli->port?cli->port:445;
1288                 cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ip,
1289                                           port, cli->timeout);
1290                 if (cli->fd == -1 && cli->port == 0) {
1291                         port = 139;
1292                         cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ip,
1293                                                   port, cli->timeout);
1294                 }
1295                 if (cli->fd != -1)
1296                         cli->port = port;
1297         }
1298         if (cli->fd == -1) {
1299                 DEBUG(1,("Error connecting to %s (%s)\n",
1300                          ip?inet_ntoa(*ip):host,strerror(errno)));
1301                 return False;
1302         }
1303
1304         set_socket_options(cli->fd,user_socket_options);
1305
1306         return True;
1307 }
1308
1309 /****************************************************************************
1310  Initialise client credentials for authenticated pipe access.
1311 ****************************************************************************/
1312
1313 void init_creds(struct ntuser_creds *creds, const char* username,
1314                        const char* domain, const char* password)
1315 {
1316         ZERO_STRUCTP(creds);
1317
1318         pwd_set_cleartext(&creds->pwd, password);
1319
1320         fstrcpy(creds->user_name, username);
1321         fstrcpy(creds->domain, domain);
1322
1323         if (!*username) {
1324                 creds->pwd.null_pwd = True;
1325         }
1326 }
1327
1328 /**
1329    establishes a connection to after the negprot.
1330    @param output_cli A fully initialised cli structure, non-null only on success
1331    @param dest_host The netbios name of the remote host
1332    @param dest_ip (optional) The the destination IP, NULL for name based lookup
1333    @param port (optional) The destination port (0 for default)
1334    @param retry BOOL. Did this connection fail with a retryable error ?
1335
1336 */
1337 NTSTATUS cli_start_connection(struct cli_state **output_cli,
1338                               const char *my_name,
1339                               const char *dest_host,
1340                               struct in_addr *dest_ip, int port,
1341                               int signing_state, int flags,
1342                               BOOL *retry)
1343 {
1344         NTSTATUS nt_status;
1345         struct nmb_name calling;
1346         struct nmb_name called;
1347         struct cli_state *cli;
1348         struct in_addr ip;
1349
1350         if (retry)
1351                 *retry = False;
1352
1353         if (!my_name)
1354                 my_name = global_myname();
1355
1356         if (!(cli = cli_initialise(NULL)))
1357                 return NT_STATUS_NO_MEMORY;
1358
1359         make_nmb_name(&calling, my_name, 0x0);
1360         make_nmb_name(&called , dest_host, 0x20);
1361
1362         if (cli_set_port(cli, port) != port) {
1363                 cli_shutdown(cli);
1364                 return NT_STATUS_UNSUCCESSFUL;
1365         }
1366
1367         cli_set_timeout(cli, 10000); /* 10 seconds. */
1368
1369         if (dest_ip)
1370                 ip = *dest_ip;
1371         else
1372                 ZERO_STRUCT(ip);
1373
1374 again:
1375
1376         DEBUG(3,("Connecting to host=%s\n", dest_host));
1377
1378         if (!cli_connect(cli, dest_host, &ip)) {
1379                 DEBUG(1,("cli_full_connection: failed to connect to %s (%s)\n",
1380                          nmb_namestr(&called), inet_ntoa(ip)));
1381                 cli_shutdown(cli);
1382                 return NT_STATUS_UNSUCCESSFUL;
1383         }
1384
1385         if (retry)
1386                 *retry = True;
1387
1388         if (!cli_session_request(cli, &calling, &called)) {
1389                 char *p;
1390                 DEBUG(1,("session request to %s failed (%s)\n",
1391                          called.name, cli_errstr(cli)));
1392                 if ((p=strchr(called.name, '.')) && !is_ipaddress(called.name)) {
1393                         *p = 0;
1394                         goto again;
1395                 }
1396                 if (strcmp(called.name, "*SMBSERVER")) {
1397                         make_nmb_name(&called , "*SMBSERVER", 0x20);
1398                         goto again;
1399                 }
1400                 return NT_STATUS_UNSUCCESSFUL;
1401         }
1402
1403         cli_setup_signing_state(cli, signing_state);
1404
1405         if (flags & CLI_FULL_CONNECTION_DONT_SPNEGO)
1406                 cli->use_spnego = False;
1407         else if (flags & CLI_FULL_CONNECTION_USE_KERBEROS)
1408                 cli->use_kerberos = True;
1409
1410         if (!cli_negprot(cli)) {
1411                 DEBUG(1,("failed negprot\n"));
1412                 nt_status = NT_STATUS_UNSUCCESSFUL;
1413                 cli_shutdown(cli);
1414                 return nt_status;
1415         }
1416
1417         *output_cli = cli;
1418         return NT_STATUS_OK;
1419 }
1420
1421
1422 /**
1423    establishes a connection right up to doing tconX, password specified.
1424    @param output_cli A fully initialised cli structure, non-null only on success
1425    @param dest_host The netbios name of the remote host
1426    @param dest_ip (optional) The the destination IP, NULL for name based lookup
1427    @param port (optional) The destination port (0 for default)
1428    @param service (optional) The share to make the connection to.  Should be 'unqualified' in any way.
1429    @param service_type The 'type' of serivice.
1430    @param user Username, unix string
1431    @param domain User's domain
1432    @param password User's password, unencrypted unix string.
1433    @param retry BOOL. Did this connection fail with a retryable error ?
1434 */
1435
1436 NTSTATUS cli_full_connection(struct cli_state **output_cli,
1437                              const char *my_name,
1438                              const char *dest_host,
1439                              struct in_addr *dest_ip, int port,
1440                              const char *service, const char *service_type,
1441                              const char *user, const char *domain,
1442                              const char *password, int flags,
1443                              int signing_state,
1444                              BOOL *retry)
1445 {
1446         struct ntuser_creds creds;
1447         NTSTATUS nt_status;
1448         struct cli_state *cli = NULL;
1449
1450         nt_status = cli_start_connection(&cli, my_name, dest_host,
1451                                          dest_ip, port, signing_state, flags, retry);
1452
1453         if (!NT_STATUS_IS_OK(nt_status)) {
1454                 return nt_status;
1455         }
1456
1457         if (!cli_session_setup(cli, user, password, strlen(password)+1,
1458                                password, strlen(password)+1,
1459                                domain)) {
1460                 if ((flags & CLI_FULL_CONNECTION_ANNONYMOUS_FALLBACK)
1461                     && cli_session_setup(cli, "", "", 0, "", 0, domain)) {
1462                 } else {
1463                         nt_status = cli_nt_error(cli);
1464                         DEBUG(1,("failed session setup with %s\n", nt_errstr(nt_status)));
1465                         cli_shutdown(cli);
1466                         if (NT_STATUS_IS_OK(nt_status))
1467                                 nt_status = NT_STATUS_UNSUCCESSFUL;
1468                         return nt_status;
1469                 }
1470         }
1471
1472         if (service) {
1473                 if (!cli_send_tconX(cli, service, service_type,
1474                                     password, strlen(password)+1)) {
1475                         nt_status = cli_nt_error(cli);
1476                         DEBUG(1,("failed tcon_X with %s\n", nt_errstr(nt_status)));
1477                         cli_shutdown(cli);
1478                         if (NT_STATUS_IS_OK(nt_status)) {
1479                                 nt_status = NT_STATUS_UNSUCCESSFUL;
1480                         }
1481                         return nt_status;
1482                 }
1483         }
1484
1485         init_creds(&creds, user, domain, password);
1486         cli_init_creds(cli, &creds);
1487
1488         *output_cli = cli;
1489         return NT_STATUS_OK;
1490 }
1491
1492 /****************************************************************************
1493  Attempt a NetBIOS session request, falling back to *SMBSERVER if needed.
1494 ****************************************************************************/
1495
1496 BOOL attempt_netbios_session_request(struct cli_state *cli, const char *srchost, const char *desthost,
1497                                      struct in_addr *pdest_ip)
1498 {
1499         struct nmb_name calling, called;
1500
1501         make_nmb_name(&calling, srchost, 0x0);
1502
1503         /*
1504          * If the called name is an IP address
1505          * then use *SMBSERVER immediately.
1506          */
1507
1508         if(is_ipaddress(desthost))
1509                 make_nmb_name(&called, "*SMBSERVER", 0x20);
1510         else
1511                 make_nmb_name(&called, desthost, 0x20);
1512
1513         if (!cli_session_request(cli, &calling, &called)) {
1514                 struct nmb_name smbservername;
1515
1516                 make_nmb_name(&smbservername , "*SMBSERVER", 0x20);
1517
1518                 /*
1519                  * If the name wasn't *SMBSERVER then
1520                  * try with *SMBSERVER if the first name fails.
1521                  */
1522
1523                 if (nmb_name_equal(&called, &smbservername)) {
1524
1525                         /*
1526                          * The name used was *SMBSERVER, don't bother with another name.
1527                          */
1528
1529                         DEBUG(0,("attempt_netbios_session_request: %s rejected the session for name *SMBSERVER \
1530 with error %s.\n", desthost, cli_errstr(cli) ));
1531                         return False;
1532                 }
1533
1534                 /*
1535                  * We need to close the connection here but can't call cli_shutdown as
1536                  * will free an allocated cli struct. cli_close_connection was invented
1537                  * for this purpose. JRA. Based on work by "Kim R. Pedersen" <krp@filanet.dk>.
1538                  */
1539
1540                 cli_close_connection(cli);
1541
1542                 if (!cli_initialise(cli) ||
1543                                 !cli_connect(cli, desthost, pdest_ip) ||
1544                                 !cli_session_request(cli, &calling, &smbservername)) {
1545                         DEBUG(0,("attempt_netbios_session_request: %s rejected the session for \
1546 name *SMBSERVER with error %s\n", desthost, cli_errstr(cli) ));
1547                         return False;
1548                 }
1549         }
1550
1551         return True;
1552 }
1553
1554
1555
1556
1557
1558 /****************************************************************************
1559  Send an old style tcon.
1560 ****************************************************************************/
1561 NTSTATUS cli_raw_tcon(struct cli_state *cli,
1562                       const char *service, const char *pass, const char *dev,
1563                       uint16 *max_xmit, uint16 *tid)
1564 {
1565         char *p;
1566
1567         if (!lp_client_plaintext_auth() && (*pass)) {
1568                 DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
1569                           " is disabled\n"));
1570                 return NT_STATUS_ACCESS_DENIED;
1571         }
1572
1573         memset(cli->outbuf,'\0',smb_size);
1574         memset(cli->inbuf,'\0',smb_size);
1575
1576         set_message(cli->outbuf, 0, 0, True);
1577         SCVAL(cli->outbuf,smb_com,SMBtcon);
1578         cli_setup_packet(cli);
1579
1580         p = smb_buf(cli->outbuf);
1581         *p++ = 4; p += clistr_push(cli, p, service, -1, STR_TERMINATE | STR_NOALIGN);
1582         *p++ = 4; p += clistr_push(cli, p, pass, -1, STR_TERMINATE | STR_NOALIGN);
1583         *p++ = 4; p += clistr_push(cli, p, dev, -1, STR_TERMINATE | STR_NOALIGN);
1584
1585         cli_setup_bcc(cli, p);
1586
1587         cli_send_smb(cli);
1588         if (!cli_receive_smb(cli)) {
1589                 return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
1590         }
1591
1592         if (cli_is_error(cli)) {
1593                 return cli_nt_error(cli);
1594         }
1595
1596         *max_xmit = SVAL(cli->inbuf, smb_vwv0);
1597         *tid = SVAL(cli->inbuf, smb_vwv1);
1598
1599         return NT_STATUS_OK;
1600 }
1601
1602 /* Return a cli_state pointing at the IPC$ share for the given server */
1603
1604 struct cli_state *get_ipc_connect(char *server, struct in_addr *server_ip,
1605                                          struct user_auth_info *user_info)
1606 {
1607         struct cli_state *cli;
1608         pstring myname;
1609         NTSTATUS nt_status;
1610
1611         get_myname(myname);
1612
1613         nt_status = cli_full_connection(&cli, myname, server, server_ip, 0, "IPC$", "IPC",
1614                                         user_info->username, lp_workgroup(), user_info->password,
1615                                         CLI_FULL_CONNECTION_ANNONYMOUS_FALLBACK, Undefined, NULL);
1616
1617         if (NT_STATUS_IS_OK(nt_status)) {
1618                 return cli;
1619         } else if (is_ipaddress(server)) {
1620             /* windows 9* needs a correct NMB name for connections */
1621             fstring remote_name;
1622
1623             if (name_status_find("*", 0, 0, *server_ip, remote_name)) {
1624                 cli = get_ipc_connect(remote_name, server_ip, user_info);
1625                 if (cli)
1626                     return cli;
1627             }
1628         }
1629         return NULL;
1630 }
1631
1632 /*
1633  * Given the IP address of a master browser on the network, return its
1634  * workgroup and connect to it.
1635  *
1636  * This function is provided to allow additional processing beyond what
1637  * get_ipc_connect_master_ip_bcast() does, e.g. to retrieve the list of master
1638  * browsers and obtain each master browsers' list of domains (in case the
1639  * first master browser is recently on the network and has not yet
1640  * synchronized with other master browsers and therefore does not yet have the
1641  * entire network browse list)
1642  */
1643
1644 struct cli_state *get_ipc_connect_master_ip(struct ip_service * mb_ip, pstring workgroup, struct user_auth_info *user_info)
1645 {
1646         static fstring name;
1647         struct cli_state *cli;
1648         struct in_addr server_ip;
1649
1650         DEBUG(99, ("Looking up name of master browser %s\n",
1651                    inet_ntoa(mb_ip->ip)));
1652
1653         /*
1654          * Do a name status query to find out the name of the master browser.
1655          * We use <01><02>__MSBROWSE__<02>#01 if *#00 fails because a domain
1656          * master browser will not respond to a wildcard query (or, at least,
1657          * an NT4 server acting as the domain master browser will not).
1658          *
1659          * We might be able to use ONLY the query on MSBROWSE, but that's not
1660          * yet been tested with all Windows versions, so until it is, leave
1661          * the original wildcard query as the first choice and fall back to
1662          * MSBROWSE if the wildcard query fails.
1663          */
1664         if (!name_status_find("*", 0, 0x1d, mb_ip->ip, name) &&
1665             !name_status_find(MSBROWSE, 1, 0x1d, mb_ip->ip, name)) {
1666
1667                 DEBUG(99, ("Could not retrieve name status for %s\n",
1668                            inet_ntoa(mb_ip->ip)));
1669                 return NULL;
1670         }
1671
1672         if (!find_master_ip(name, &server_ip)) {
1673                 DEBUG(99, ("Could not find master ip for %s\n", name));
1674                 return NULL;
1675         }
1676
1677                 pstrcpy(workgroup, name);
1678
1679                 DEBUG(4, ("found master browser %s, %s\n",
1680                   name, inet_ntoa(mb_ip->ip)));
1681
1682                 cli = get_ipc_connect(inet_ntoa(server_ip), &server_ip, user_info);
1683
1684                 return cli;
1685
1686 }
1687
1688 /*
1689  * Return the IP address and workgroup of a master browser on the network, and
1690  * connect to it.
1691  */
1692
1693 struct cli_state *get_ipc_connect_master_ip_bcast(pstring workgroup, struct user_auth_info *user_info)
1694 {
1695         struct ip_service *ip_list;
1696         struct cli_state *cli;
1697         int i, count;
1698
1699         DEBUG(99, ("Do broadcast lookup for workgroups on local network\n"));
1700
1701         /* Go looking for workgroups by broadcasting on the local network */
1702
1703         if (!name_resolve_bcast(MSBROWSE, 1, &ip_list, &count)) {
1704                 DEBUG(99, ("No master browsers responded\n"));
1705                 return False;
1706         }
1707
1708         for (i = 0; i < count; i++) {
1709             DEBUG(99, ("Found master browser %s\n", inet_ntoa(ip_list[i].ip)));
1710
1711             cli = get_ipc_connect_master_ip(&ip_list[i], workgroup, user_info);
1712             if (cli)
1713                     return(cli);
1714         }
1715
1716         return NULL;
1717 }