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