source3/libsmb/cliconnect.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    client connect/disconnect routines
   4    Copyright (C) Andrew Tridgell 1994-1998
   5    Copyright (C) Andrew Bartlett 2001-2003
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 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 #include "includes.h"
  23
  24 extern pstring user_socket_options;
  25
  26 static const struct {
  27         int prot;
  28         const char *name;
  29 } prots[] = {
  30         {PROTOCOL_CORE,"PC NETWORK PROGRAM 1.0"},
  31         {PROTOCOL_COREPLUS,"MICROSOFT NETWORKS 1.03"},
  32         {PROTOCOL_LANMAN1,"MICROSOFT NETWORKS 3.0"},
  33         {PROTOCOL_LANMAN1,"LANMAN1.0"},
  34         {PROTOCOL_LANMAN2,"LM1.2X002"},
  35         {PROTOCOL_LANMAN2,"DOS LANMAN2.1"},
  36         {PROTOCOL_LANMAN2,"Samba"},
  37         {PROTOCOL_NT1,"NT LANMAN 1.0"},
  38         {PROTOCOL_NT1,"NT LM 0.12"},
  39         {-1,NULL}
  40 };
  41
  42 /**
  43  * Set the user session key for a connection
  44  * @param cli The cli structure to add it too
  45  * @param session_key The session key used.  (A copy of this is taken for the cli struct)
  46  *
  47  */
  48
  49 static void cli_set_session_key (struct cli_state *cli, const DATA_BLOB session_key)
  50 {
  51         cli->user_session_key = data_blob(session_key.data, session_key.length);
  52 }
  53
  54 /****************************************************************************
  55  Do an old lanman2 style session setup.
  56 ****************************************************************************/
  57
  58 static BOOL cli_session_setup_lanman2(struct cli_state *cli, const char *user,
  59                                       const char *pass, size_t passlen, const char *workgroup)
  60 {
  61         DATA_BLOB session_key = data_blob(NULL, 0);
  62         DATA_BLOB lm_response = data_blob(NULL, 0);
  63         fstring pword;
  64         char *p;
  65
  66         if (passlen > sizeof(pword)-1)
  67                 return False;
  68
  69         /* LANMAN servers predate NT status codes and Unicode and ignore those
  70            smb flags so we must disable the corresponding default capabilities
  71            that would otherwise cause the Unicode and NT Status flags to be
  72            set (and even returned by the server) */
  73
  74         cli->capabilities &= ~(CAP_UNICODE | CAP_STATUS32);
  75
  76         /* if in share level security then don't send a password now */
  77         if (!(cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL))
  78                 passlen = 0;
  79
  80         if (passlen > 0 && (cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && passlen != 24) {
  81                 /* Encrypted mode needed, and non encrypted password supplied. */
  82                 lm_response = data_blob(NULL, 24);
  83                 if (!SMBencrypt(pass, cli->secblob.data,(uchar *)lm_response.data)) {
  84                         DEBUG(1, ("Password is > 14 chars in length, and is therefore incompatible with Lanman authentication\n"));
  85                         return False;
  86                 }
  87         } else if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && passlen == 24) {
  88                 /* Encrypted mode needed, and encrypted password supplied. */
  89                 lm_response = data_blob(pass, passlen);
  90         } else if (passlen > 0) {
  91                 /* Plaintext mode needed, assume plaintext supplied. */
  92                 passlen = clistr_push(cli, pword, pass, sizeof(pword), STR_TERMINATE);
  93                 lm_response = data_blob(pass, passlen);
  94         }
  95
  96         /* send a session setup command */
  97         memset(cli->outbuf,'\0',smb_size);
  98         set_message(cli->outbuf,10, 0, True);
  99         SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
 100         cli_setup_packet(cli);
 101
 102         SCVAL(cli->outbuf,smb_vwv0,0xFF);
 103         SSVAL(cli->outbuf,smb_vwv2,cli->max_xmit);
 104         SSVAL(cli->outbuf,smb_vwv3,2);
 105         SSVAL(cli->outbuf,smb_vwv4,1);
 106         SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
 107         SSVAL(cli->outbuf,smb_vwv7,lm_response.length);
 108
 109         p = smb_buf(cli->outbuf);
 110         memcpy(p,lm_response.data,lm_response.length);
 111         p += lm_response.length;
 112         p += clistr_push(cli, p, user, -1, STR_TERMINATE|STR_UPPER);
 113         p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE|STR_UPPER);
 114         p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
 115         p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
 116         cli_setup_bcc(cli, p);
 117
 118         cli_send_smb(cli);
 119         if (!cli_receive_smb(cli))
 120                 return False;
 121
 122         show_msg(cli->inbuf);
 123
 124         if (cli_is_error(cli))
 125                 return False;
 126
 127         /* use the returned vuid from now on */
 128         cli->vuid = SVAL(cli->inbuf,smb_uid);
 129         fstrcpy(cli->user_name, user);
 130
 131         if (session_key.data) {
 132                 /* Have plaintext orginal */
 133                 cli_set_session_key(cli, session_key);
 134         }
 135
 136         return True;
 137 }
 138
 139 /****************************************************************************
 140  Work out suitable capabilities to offer the server.
 141 ****************************************************************************/
 142
 143 static uint32 cli_session_setup_capabilities(struct cli_state *cli)
 144 {
 145         uint32 capabilities = CAP_NT_SMBS;
 146
 147         if (!cli->force_dos_errors)
 148                 capabilities |= CAP_STATUS32;
 149
 150         if (cli->use_level_II_oplocks)
 151                 capabilities |= CAP_LEVEL_II_OPLOCKS;
 152
 153         capabilities |= (cli->capabilities & (CAP_UNICODE|CAP_LARGE_FILES|CAP_LARGE_READX|CAP_LARGE_WRITEX|CAP_DFS));
 154         return capabilities;
 155 }
 156
 157 /****************************************************************************
 158  Do a NT1 guest session setup.
 159 ****************************************************************************/
 160
 161 static BOOL cli_session_setup_guest(struct cli_state *cli)
 162 {
 163         char *p;
 164         uint32 capabilities = cli_session_setup_capabilities(cli);
 165
 166         set_message(cli->outbuf,13,0,True);
 167         SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
 168         cli_setup_packet(cli);
 169
 170         SCVAL(cli->outbuf,smb_vwv0,0xFF);
 171         SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
 172         SSVAL(cli->outbuf,smb_vwv3,2);
 173         SSVAL(cli->outbuf,smb_vwv4,cli->pid);
 174         SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
 175         SSVAL(cli->outbuf,smb_vwv7,0);
 176         SSVAL(cli->outbuf,smb_vwv8,0);
 177         SIVAL(cli->outbuf,smb_vwv11,capabilities);
 178         p = smb_buf(cli->outbuf);
 179         p += clistr_push(cli, p, "", -1, STR_TERMINATE); /* username */
 180         p += clistr_push(cli, p, "", -1, STR_TERMINATE); /* workgroup */
 181         p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
 182         p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
 183         cli_setup_bcc(cli, p);
 184
 185         cli_send_smb(cli);
 186         if (!cli_receive_smb(cli))
 187               return False;
 188
 189         show_msg(cli->inbuf);
 190
 191         if (cli_is_error(cli))
 192                 return False;
 193
 194         cli->vuid = SVAL(cli->inbuf,smb_uid);
 195
 196         p = smb_buf(cli->inbuf);
 197         p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
 198         p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
 199         p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
 200
 201         fstrcpy(cli->user_name, "");
 202
 203         return True;
 204 }
 205
 206 /****************************************************************************
 207  Do a NT1 plaintext session setup.
 208 ****************************************************************************/
 209
 210 static BOOL cli_session_setup_plaintext(struct cli_state *cli, const char *user,
 211                                         const char *pass, const char *workgroup)
 212 {
 213         uint32 capabilities = cli_session_setup_capabilities(cli);
 214         char *p;
 215         fstring lanman;
 216
 217         fstr_sprintf( lanman, "Samba %s", SAMBA_VERSION_STRING);
 218
 219         set_message(cli->outbuf,13,0,True);
 220         SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
 221         cli_setup_packet(cli);
 222
 223         SCVAL(cli->outbuf,smb_vwv0,0xFF);
 224         SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
 225         SSVAL(cli->outbuf,smb_vwv3,2);
 226         SSVAL(cli->outbuf,smb_vwv4,cli->pid);
 227         SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
 228         SSVAL(cli->outbuf,smb_vwv8,0);
 229         SIVAL(cli->outbuf,smb_vwv11,capabilities);
 230         p = smb_buf(cli->outbuf);
 231
 232         /* check wether to send the ASCII or UNICODE version of the password */
 233
 234         if ( (capabilities & CAP_UNICODE) == 0 ) {
 235                 p += clistr_push(cli, p, pass, -1, STR_TERMINATE); /* password */
 236                 SSVAL(cli->outbuf,smb_vwv7,PTR_DIFF(p, smb_buf(cli->outbuf)));
 237         }
 238         else {
 239                 p += clistr_push(cli, p, pass, -1, STR_UNICODE|STR_TERMINATE); /* unicode password */
 240                 SSVAL(cli->outbuf,smb_vwv8,PTR_DIFF(p, smb_buf(cli->outbuf)));
 241         }
 242
 243         p += clistr_push(cli, p, user, -1, STR_TERMINATE); /* username */
 244         p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE); /* workgroup */
 245         p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
 246         p += clistr_push(cli, p, lanman, -1, STR_TERMINATE);
 247         cli_setup_bcc(cli, p);
 248
 249         cli_send_smb(cli);
 250         if (!cli_receive_smb(cli))
 251               return False;
 252
 253         show_msg(cli->inbuf);
 254
 255         if (cli_is_error(cli))
 256                 return False;
 257
 258         cli->vuid = SVAL(cli->inbuf,smb_uid);
 259         p = smb_buf(cli->inbuf);
 260         p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
 261         p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
 262         p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
 263         fstrcpy(cli->user_name, user);
 264
 265         return True;
 266 }
 267
 268 /****************************************************************************
 269    do a NT1 NTLM/LM encrypted session setup - for when extended security
 270    is not negotiated.
 271    @param cli client state to create do session setup on
 272    @param user username
 273    @param pass *either* cleartext password (passlen !=24) or LM response.
 274    @param ntpass NT response, implies ntpasslen >=24, implies pass is not clear
 275    @param workgroup The user's domain.
 276 ****************************************************************************/
 277
 278 static BOOL cli_session_setup_nt1(struct cli_state *cli, const char *user,
 279                                   const char *pass, size_t passlen,
 280                                   const char *ntpass, size_t ntpasslen,
 281                                   const char *workgroup)
 282 {
 283         uint32 capabilities = cli_session_setup_capabilities(cli);
 284         DATA_BLOB lm_response = data_blob(NULL, 0);
 285         DATA_BLOB nt_response = data_blob(NULL, 0);
 286         DATA_BLOB session_key = data_blob(NULL, 0);
 287         BOOL ret = False;
 288         char *p;
 289
 290         if (passlen == 0) {
 291                 /* do nothing - guest login */
 292         } else if (passlen != 24) {
 293                 if (lp_client_ntlmv2_auth()) {
 294                         DATA_BLOB server_chal;
 295                         DATA_BLOB names_blob;
 296                         server_chal = data_blob(cli->secblob.data, MIN(cli->secblob.length, 8));
 297
 298                         /* note that the 'workgroup' here is a best guess - we don't know
 299                            the server's domain at this point.  The 'server name' is also
 300                            dodgy...
 301                         */
 302                         names_blob = NTLMv2_generate_names_blob(cli->called.name, workgroup);
 303
 304                         if (!SMBNTLMv2encrypt(user, workgroup, pass, &server_chal,
 305                                               &names_blob,
 306                                               &lm_response, &nt_response, &session_key)) {
 307                                 data_blob_free(&names_blob);
 308                                 data_blob_free(&server_chal);
 309                                 return False;
 310                         }
 311                         data_blob_free(&names_blob);
 312                         data_blob_free(&server_chal);
 313
 314                 } else {
 315                         uchar nt_hash[16];
 316                         E_md4hash(pass, nt_hash);
 317
 318 #ifdef LANMAN_ONLY
 319                         nt_response = data_blob(NULL, 0);
 320 #else
 321                         nt_response = data_blob(NULL, 24);
 322                         SMBNTencrypt(pass,cli->secblob.data,nt_response.data);
 323 #endif
 324                         /* non encrypted password supplied. Ignore ntpass. */
 325                         if (lp_client_lanman_auth()) {
 326                                 lm_response = data_blob(NULL, 24);
 327                                 if (!SMBencrypt(pass,cli->secblob.data, lm_response.data)) {
 328                                         /* Oops, the LM response is invalid, just put
 329                                            the NT response there instead */
 330                                         data_blob_free(&lm_response);
 331                                         lm_response = data_blob(nt_response.data, nt_response.length);
 332                                 }
 333                         } else {
 334                                 /* LM disabled, place NT# in LM field instead */
 335                                 lm_response = data_blob(nt_response.data, nt_response.length);
 336                         }
 337
 338                         session_key = data_blob(NULL, 16);
 339 #ifdef LANMAN_ONLY
 340                         E_deshash(pass, session_key.data);
 341                         memset(&session_key.data[8], '\0', 8);
 342 #else
 343                         SMBsesskeygen_ntv1(nt_hash, NULL, session_key.data);
 344 #endif
 345                 }
 346 #ifdef LANMAN_ONLY
 347                 cli_simple_set_signing(cli, session_key, lm_response);
 348 #else
 349                 cli_simple_set_signing(cli, session_key, nt_response);
 350 #endif
 351         } else {
 352                 /* pre-encrypted password supplied.  Only used for
 353                    security=server, can't do
 354                    signing because we don't have original key */
 355
 356                 lm_response = data_blob(pass, passlen);
 357                 nt_response = data_blob(ntpass, ntpasslen);
 358         }
 359
 360         /* send a session setup command */
 361         memset(cli->outbuf,'\0',smb_size);
 362
 363         set_message(cli->outbuf,13,0,True);
 364         SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
 365         cli_setup_packet(cli);
 366
 367         SCVAL(cli->outbuf,smb_vwv0,0xFF);
 368         SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
 369         SSVAL(cli->outbuf,smb_vwv3,2);
 370         SSVAL(cli->outbuf,smb_vwv4,cli->pid);
 371         SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
 372         SSVAL(cli->outbuf,smb_vwv7,lm_response.length);
 373         SSVAL(cli->outbuf,smb_vwv8,nt_response.length);
 374         SIVAL(cli->outbuf,smb_vwv11,capabilities);
 375         p = smb_buf(cli->outbuf);
 376         if (lm_response.length) {
 377                 memcpy(p,lm_response.data, lm_response.length); p += lm_response.length;
 378         }
 379         if (nt_response.length) {
 380                 memcpy(p,nt_response.data, nt_response.length); p += nt_response.length;
 381         }
 382         p += clistr_push(cli, p, user, -1, STR_TERMINATE);
 383
 384         /* Upper case here might help some NTLMv2 implementations */
 385         p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE|STR_UPPER);
 386         p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
 387         p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
 388         cli_setup_bcc(cli, p);
 389
 390         if (!cli_send_smb(cli) || !cli_receive_smb(cli)) {
 391                 ret = False;
 392                 goto end;
 393         }
 394
 395         /* show_msg(cli->inbuf); */
 396
 397         if (cli_is_error(cli)) {
 398                 ret = False;
 399                 goto end;
 400         }
 401
 402         /* use the returned vuid from now on */
 403         cli->vuid = SVAL(cli->inbuf,smb_uid);
 404
 405         p = smb_buf(cli->inbuf);
 406         p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
 407         p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
 408         p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
 409
 410         fstrcpy(cli->user_name, user);
 411
 412         if (session_key.data) {
 413                 /* Have plaintext orginal */
 414                 cli_set_session_key(cli, session_key);
 415         }
 416
 417         ret = True;
 418 end:
 419         data_blob_free(&lm_response);
 420         data_blob_free(&nt_response);
 421         data_blob_free(&session_key);
 422         return ret;
 423 }
 424
 425 /****************************************************************************
 426  Send a extended security session setup blob
 427 ****************************************************************************/
 428
 429 static BOOL cli_session_setup_blob_send(struct cli_state *cli, DATA_BLOB blob)
 430 {
 431         uint32 capabilities = cli_session_setup_capabilities(cli);
 432         char *p;
 433
 434         capabilities |= CAP_EXTENDED_SECURITY;
 435
 436         /* send a session setup command */
 437         memset(cli->outbuf,'\0',smb_size);
 438
 439         set_message(cli->outbuf,12,0,True);
 440         SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
 441
 442         cli_setup_packet(cli);
 443
 444         SCVAL(cli->outbuf,smb_vwv0,0xFF);
 445         SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
 446         SSVAL(cli->outbuf,smb_vwv3,2);
 447         SSVAL(cli->outbuf,smb_vwv4,1);
 448         SIVAL(cli->outbuf,smb_vwv5,0);
 449         SSVAL(cli->outbuf,smb_vwv7,blob.length);
 450         SIVAL(cli->outbuf,smb_vwv10,capabilities);
 451         p = smb_buf(cli->outbuf);
 452         memcpy(p, blob.data, blob.length);
 453         p += blob.length;
 454         p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
 455         p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
 456         cli_setup_bcc(cli, p);
 457         return cli_send_smb(cli);
 458 }
 459
 460 /****************************************************************************
 461  Send a extended security session setup blob, returning a reply blob.
 462 ****************************************************************************/
 463
 464 static DATA_BLOB cli_session_setup_blob_receive(struct cli_state *cli)
 465 {
 466         DATA_BLOB blob2 = data_blob(NULL, 0);
 467         char *p;
 468         size_t len;
 469
 470         if (!cli_receive_smb(cli))
 471                 return blob2;
 472
 473         show_msg(cli->inbuf);
 474
 475         if (cli_is_error(cli) && !NT_STATUS_EQUAL(cli_nt_error(cli),
 476                                                   NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 477                 return blob2;
 478         }
 479
 480         /* use the returned vuid from now on */
 481         cli->vuid = SVAL(cli->inbuf,smb_uid);
 482
 483         p = smb_buf(cli->inbuf);
 484
 485         blob2 = data_blob(p, SVAL(cli->inbuf, smb_vwv3));
 486
 487         p += blob2.length;
 488         p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
 489
 490         /* w2k with kerberos doesn't properly null terminate this field */
 491         len = smb_buflen(cli->inbuf) - PTR_DIFF(p, smb_buf(cli->inbuf));
 492         p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), len, 0);
 493
 494         return blob2;
 495 }
 496
 497 #ifdef HAVE_KRB5
 498
 499 /****************************************************************************
 500  Send a extended security session setup blob, returning a reply blob.
 501 ****************************************************************************/
 502
 503 static DATA_BLOB cli_session_setup_blob(struct cli_state *cli, DATA_BLOB blob)
 504 {
 505         DATA_BLOB blob2 = data_blob(NULL, 0);
 506         if (!cli_session_setup_blob_send(cli, blob)) {
 507                 return blob2;
 508         }
 509
 510         return cli_session_setup_blob_receive(cli);
 511 }
 512
 513 /****************************************************************************
 514  Use in-memory credentials cache
 515 ****************************************************************************/
 516
 517 static void use_in_memory_ccache(void) {
 518         setenv(KRB5_ENV_CCNAME, "MEMORY:cliconnect", 1);
 519 }
 520
 521 /****************************************************************************
 522  Do a spnego/kerberos encrypted session setup.
 523 ****************************************************************************/
 524
 525 static ADS_STATUS cli_session_setup_kerberos(struct cli_state *cli, const char *principal, const char *workgroup)
 526 {
 527         DATA_BLOB blob2, negTokenTarg;
 528         DATA_BLOB session_key_krb5;
 529         DATA_BLOB null_blob = data_blob(NULL, 0);
 530         int rc;
 531
 532         DEBUG(2,("Doing kerberos session setup\n"));
 533
 534         /* generate the encapsulated kerberos5 ticket */
 535         rc = spnego_gen_negTokenTarg(principal, 0, &negTokenTarg, &session_key_krb5, 0);
 536
 537         if (rc) {
 538                 DEBUG(1, ("spnego_gen_negTokenTarg failed: %s\n", error_message(rc)));
 539                 return ADS_ERROR_KRB5(rc);
 540         }
 541
 542 #if 0
 543         file_save("negTokenTarg.dat", negTokenTarg.data, negTokenTarg.length);
 544 #endif
 545
 546         cli_simple_set_signing(cli, session_key_krb5, null_blob);
 547
 548         blob2 = cli_session_setup_blob(cli, negTokenTarg);
 549
 550         /* we don't need this blob for kerberos */
 551         data_blob_free(&blob2);
 552
 553         cli_set_session_key(cli, session_key_krb5);
 554
 555         data_blob_free(&negTokenTarg);
 556         data_blob_free(&session_key_krb5);
 557
 558         if (cli_is_error(cli)) {
 559                 if (NT_STATUS_IS_OK(cli_nt_error(cli))) {
 560                         return ADS_ERROR_NT(NT_STATUS_UNSUCCESSFUL);
 561                 }
 562         }
 563         return ADS_ERROR_NT(cli_nt_error(cli));
 564 }
 565 #endif  /* HAVE_KRB5 */
 566
 567
 568 /****************************************************************************
 569  Do a spnego/NTLMSSP encrypted session setup.
 570 ****************************************************************************/
 571
 572 static NTSTATUS cli_session_setup_ntlmssp(struct cli_state *cli, const char *user,
 573                                           const char *pass, const char *domain)
 574 {
 575         struct ntlmssp_state *ntlmssp_state;
 576         NTSTATUS nt_status;
 577         int turn = 1;
 578         DATA_BLOB msg1;
 579         DATA_BLOB blob = data_blob(NULL, 0);
 580         DATA_BLOB blob_in = data_blob(NULL, 0);
 581         DATA_BLOB blob_out = data_blob(NULL, 0);
 582
 583         cli_temp_set_signing(cli);
 584
 585         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_client_start(&ntlmssp_state))) {
 586                 return nt_status;
 587         }
 588
 589         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_username(ntlmssp_state, user))) {
 590                 return nt_status;
 591         }
 592         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_domain(ntlmssp_state, domain))) {
 593                 return nt_status;
 594         }
 595         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_password(ntlmssp_state, pass))) {
 596                 return nt_status;
 597         }
 598
 599         do {
 600                 nt_status = ntlmssp_update(ntlmssp_state,
 601                                                   blob_in, &blob_out);
 602                 data_blob_free(&blob_in);
 603                 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED) || NT_STATUS_IS_OK(nt_status)) {
 604                         if (turn == 1) {
 605                                 /* and wrap it in a SPNEGO wrapper */
 606                                 msg1 = gen_negTokenInit(OID_NTLMSSP, blob_out);
 607                         } else {
 608                                 /* wrap it in SPNEGO */
 609                                 msg1 = spnego_gen_auth(blob_out);
 610                         }
 611
 612                         /* now send that blob on its way */
 613                         if (!cli_session_setup_blob_send(cli, msg1)) {
 614                                 DEBUG(3, ("Failed to send NTLMSSP/SPNEGO blob to server!\n"));
 615                                 nt_status = NT_STATUS_UNSUCCESSFUL;
 616                         } else {
 617                                 data_blob_free(&msg1);
 618
 619                                 blob = cli_session_setup_blob_receive(cli);
 620
 621                                 nt_status = cli_nt_error(cli);
 622                                 if (cli_is_error(cli) && NT_STATUS_IS_OK(nt_status)) {
 623                                         if (cli->smb_rw_error == READ_BAD_SIG) {
 624                                                 nt_status = NT_STATUS_ACCESS_DENIED;
 625                                         } else {
 626                                                 nt_status = NT_STATUS_UNSUCCESSFUL;
 627                                         }
 628                                 }
 629                         }
 630                 }
 631
 632                 if (!blob.length) {
 633                         if (NT_STATUS_IS_OK(nt_status)) {
 634                                 nt_status = NT_STATUS_UNSUCCESSFUL;
 635                         }
 636                 } else if ((turn == 1) &&
 637                            NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 638                         DATA_BLOB tmp_blob = data_blob(NULL, 0);
 639                         /* the server might give us back two challenges */
 640                         if (!spnego_parse_challenge(blob, &blob_in,
 641                                                     &tmp_blob)) {
 642                                 DEBUG(3,("Failed to parse challenges\n"));
 643                                 nt_status = NT_STATUS_INVALID_PARAMETER;
 644                         }
 645                         data_blob_free(&tmp_blob);
 646                 } else {
 647                         if (!spnego_parse_auth_response(blob, nt_status,
 648                                                         &blob_in)) {
 649                                 DEBUG(3,("Failed to parse auth response\n"));
 650                                 if (NT_STATUS_IS_OK(nt_status)
 651                                     || NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED))
 652                                         nt_status = NT_STATUS_INVALID_PARAMETER;
 653                         }
 654                 }
 655                 data_blob_free(&blob);
 656                 data_blob_free(&blob_out);
 657                 turn++;
 658         } while (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED));
 659
 660         if (NT_STATUS_IS_OK(nt_status)) {
 661
 662                 DATA_BLOB key = data_blob(ntlmssp_state->session_key.data,
 663                                           ntlmssp_state->session_key.length);
 664                 DATA_BLOB null_blob = data_blob(NULL, 0);
 665                 BOOL res;
 666
 667                 fstrcpy(cli->server_domain, ntlmssp_state->server_domain);
 668                 cli_set_session_key(cli, ntlmssp_state->session_key);
 669
 670                 res = cli_simple_set_signing(cli, key, null_blob);
 671
 672                 data_blob_free(&key);
 673
 674                 if (res) {
 675
 676                         /* 'resign' the last message, so we get the right sequence numbers
 677                            for checking the first reply from the server */
 678                         cli_calculate_sign_mac(cli);
 679
 680                         if (!cli_check_sign_mac(cli)) {
 681                                 nt_status = NT_STATUS_ACCESS_DENIED;
 682                         }
 683                 }
 684         }
 685
 686         /* we have a reference conter on ntlmssp_state, if we are signing
 687            then the state will be kept by the signing engine */
 688
 689         ntlmssp_end(&ntlmssp_state);
 690
 691         return nt_status;
 692 }
 693
 694 /****************************************************************************
 695  Do a spnego encrypted session setup.
 696 ****************************************************************************/
 697
 698 ADS_STATUS cli_session_setup_spnego(struct cli_state *cli, const char *user,
 699                               const char *pass, const char *domain)
 700 {
 701         char *principal;
 702         char *OIDs[ASN1_MAX_OIDS];
 703         int i;
 704 #ifdef HAVE_KRB5
 705         BOOL got_kerberos_mechanism = False;
 706 #endif
 707         DATA_BLOB blob;
 708
 709         DEBUG(3,("Doing spnego session setup (blob length=%lu)\n", (unsigned long)cli->secblob.length));
 710
 711         /* the server might not even do spnego */
 712         if (cli->secblob.length <= 16) {
 713                 DEBUG(3,("server didn't supply a full spnego negprot\n"));
 714                 goto ntlmssp;
 715         }
 716
 717 #if 0
 718         file_save("negprot.dat", cli->secblob.data, cli->secblob.length);
 719 #endif
 720
 721         /* there is 16 bytes of GUID before the real spnego packet starts */
 722         blob = data_blob(cli->secblob.data+16, cli->secblob.length-16);
 723
 724         /* the server sent us the first part of the SPNEGO exchange in the negprot
 725            reply */
 726         if (!spnego_parse_negTokenInit(blob, OIDs, &principal)) {
 727                 data_blob_free(&blob);
 728                 return ADS_ERROR_NT(NT_STATUS_INVALID_PARAMETER);
 729         }
 730         data_blob_free(&blob);
 731
 732         /* make sure the server understands kerberos */
 733         for (i=0;OIDs[i];i++) {
 734                 DEBUG(3,("got OID=%s\n", OIDs[i]));
 735 #ifdef HAVE_KRB5
 736                 if (strcmp(OIDs[i], OID_KERBEROS5_OLD) == 0 ||
 737                     strcmp(OIDs[i], OID_KERBEROS5) == 0) {
 738                         got_kerberos_mechanism = True;
 739                 }
 740 #endif
 741                 free(OIDs[i]);
 742         }
 743         DEBUG(3,("got principal=%s\n", principal));
 744
 745         fstrcpy(cli->user_name, user);
 746
 747 #ifdef HAVE_KRB5
 748         /* If password is set we reauthenticate to kerberos server
 749          * and do not store results */
 750
 751         if (got_kerberos_mechanism && cli->use_kerberos) {
 752                 ADS_STATUS rc;
 753
 754                 if (pass && *pass) {
 755                         int ret;
 756
 757                         use_in_memory_ccache();
 758                         ret = kerberos_kinit_password(user, pass, 0 /* no time correction for now */, NULL, NULL);
 759
 760                         if (ret){
 761                                 SAFE_FREE(principal);
 762                                 DEBUG(0, ("Kinit failed: %s\n", error_message(ret)));
 763                                 if (cli->fallback_after_kerberos)
 764                                         goto ntlmssp;
 765                                 return ADS_ERROR_KRB5(ret);
 766                         }
 767                 }
 768
 769                 rc = cli_session_setup_kerberos(cli, principal, domain);
 770                 if (ADS_ERR_OK(rc) || !cli->fallback_after_kerberos) {
 771                         SAFE_FREE(principal);
 772                         return rc;
 773                 }
 774         }
 775 #endif
 776
 777         SAFE_FREE(principal);
 778
 779 ntlmssp:
 780
 781         return ADS_ERROR_NT(cli_session_setup_ntlmssp(cli, user, pass, domain));
 782 }
 783
 784 /****************************************************************************
 785  Send a session setup. The username and workgroup is in UNIX character
 786  format and must be converted to DOS codepage format before sending. If the
 787  password is in plaintext, the same should be done.
 788 ****************************************************************************/
 789
 790 BOOL cli_session_setup(struct cli_state *cli,
 791                        const char *user,
 792                        const char *pass, int passlen,
 793                        const char *ntpass, int ntpasslen,
 794                        const char *workgroup)
 795 {
 796         char *p;
 797         fstring user2;
 798
 799         /* allow for workgroups as part of the username */
 800         fstrcpy(user2, user);
 801         if ((p=strchr_m(user2,'\\')) || (p=strchr_m(user2,'/')) ||
 802             (p=strchr_m(user2,*lp_winbind_separator()))) {
 803                 *p = 0;
 804                 user = p+1;
 805                 workgroup = user2;
 806         }
 807
 808         if (cli->protocol < PROTOCOL_LANMAN1)
 809                 return True;
 810
 811         /* now work out what sort of session setup we are going to
 812            do. I have split this into separate functions to make the
 813            flow a bit easier to understand (tridge) */
 814
 815         /* if its an older server then we have to use the older request format */
 816
 817         if (cli->protocol < PROTOCOL_NT1) {
 818                 if (!lp_client_lanman_auth() && passlen != 24 && (*pass)) {
 819                         DEBUG(1, ("Server requested LM password but 'client lanman auth'"
 820                                   " is disabled\n"));
 821                         return False;
 822                 }
 823
 824                 if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0 &&
 825                     !lp_client_plaintext_auth() && (*pass)) {
 826                         DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
 827                                   " is disabled\n"));
 828                         return False;
 829                 }
 830
 831                 return cli_session_setup_lanman2(cli, user, pass, passlen, workgroup);
 832         }
 833
 834         /* if no user is supplied then we have to do an anonymous connection.
 835            passwords are ignored */
 836
 837         if (!user || !*user)
 838                 return cli_session_setup_guest(cli);
 839
 840         /* if the server is share level then send a plaintext null
 841            password at this point. The password is sent in the tree
 842            connect */
 843
 844         if ((cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) == 0)
 845                 return cli_session_setup_plaintext(cli, user, "", workgroup);
 846
 847         /* if the server doesn't support encryption then we have to use
 848            plaintext. The second password is ignored */
 849
 850         if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0) {
 851                 if (!lp_client_plaintext_auth() && (*pass)) {
 852                         DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
 853                                   " is disabled\n"));
 854                         return False;
 855                 }
 856                 return cli_session_setup_plaintext(cli, user, pass, workgroup);
 857         }
 858
 859         /* if the server supports extended security then use SPNEGO */
 860
 861         if (cli->capabilities & CAP_EXTENDED_SECURITY) {
 862                 ADS_STATUS status = cli_session_setup_spnego(cli, user, pass, workgroup);
 863                 if (!ADS_ERR_OK(status)) {
 864                         DEBUG(3, ("SPNEGO login failed: %s\n", ads_errstr(status)));
 865                         return False;
 866                 }
 867                 return True;
 868         }
 869
 870         /* otherwise do a NT1 style session setup */
 871
 872         return cli_session_setup_nt1(cli, user,
 873                                      pass, passlen, ntpass, ntpasslen,
 874                                      workgroup);
 875 }
 876
 877 /****************************************************************************
 878  Send a uloggoff.
 879 *****************************************************************************/
 880
 881 BOOL cli_ulogoff(struct cli_state *cli)
 882 {
 883         memset(cli->outbuf,'\0',smb_size);
 884         set_message(cli->outbuf,2,0,True);
 885         SCVAL(cli->outbuf,smb_com,SMBulogoffX);
 886         cli_setup_packet(cli);
 887         SSVAL(cli->outbuf,smb_vwv0,0xFF);
 888         SSVAL(cli->outbuf,smb_vwv2,0);  /* no additional info */
 889
 890         cli_send_smb(cli);
 891         if (!cli_receive_smb(cli))
 892                 return False;
 893
 894         if (cli_is_error(cli)) {
 895                 return False;
 896         }
 897
 898         cli->cnum = -1;
 899         return True;
 900 }
 901
 902 /****************************************************************************
 903  Send a tconX.
 904 ****************************************************************************/
 905 BOOL cli_send_tconX(struct cli_state *cli,
 906                     const char *share, const char *dev, const char *pass, int passlen)
 907 {
 908         fstring fullshare, pword;
 909         char *p;
 910         memset(cli->outbuf,'\0',smb_size);
 911         memset(cli->inbuf,'\0',smb_size);
 912
 913         fstrcpy(cli->share, share);
 914
 915         /* in user level security don't send a password now */
 916         if (cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) {
 917                 passlen = 1;
 918                 pass = "";
 919         }
 920
 921         if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && *pass && passlen != 24) {
 922                 if (!lp_client_lanman_auth()) {
 923                         DEBUG(1, ("Server requested LANMAN password (share-level security) but 'client use lanman auth'"
 924                                   " is disabled\n"));
 925                         return False;
 926                 }
 927
 928                 /*
 929                  * Non-encrypted passwords - convert to DOS codepage before encryption.
 930                  */
 931                 passlen = 24;
 932                 SMBencrypt(pass,cli->secblob.data,(uchar *)pword);
 933         } else {
 934                 if((cli->sec_mode & (NEGOTIATE_SECURITY_USER_LEVEL|NEGOTIATE_SECURITY_CHALLENGE_RESPONSE)) == 0) {
 935                         if (!lp_client_plaintext_auth() && (*pass)) {
 936                                 DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
 937                                           " is disabled\n"));
 938                                 return False;
 939                         }
 940
 941                         /*
 942                          * Non-encrypted passwords - convert to DOS codepage before using.
 943                          */
 944                         passlen = clistr_push(cli, pword, pass, sizeof(pword), STR_TERMINATE);
 945
 946                 } else {
 947                         memcpy(pword, pass, passlen);
 948                 }
 949         }
 950
 951         slprintf(fullshare, sizeof(fullshare)-1,
 952                  "\\\\%s\\%s", cli->desthost, share);
 953
 954         set_message(cli->outbuf,4, 0, True);
 955         SCVAL(cli->outbuf,smb_com,SMBtconX);
 956         cli_setup_packet(cli);
 957
 958         SSVAL(cli->outbuf,smb_vwv0,0xFF);
 959         SSVAL(cli->outbuf,smb_vwv3,passlen);
 960
 961         p = smb_buf(cli->outbuf);
 962         memcpy(p,pword,passlen);
 963         p += passlen;
 964         p += clistr_push(cli, p, fullshare, -1, STR_TERMINATE |STR_UPPER);
 965         p += clistr_push(cli, p, dev, -1, STR_TERMINATE |STR_UPPER | STR_ASCII);
 966
 967         cli_setup_bcc(cli, p);
 968
 969         cli_send_smb(cli);
 970         if (!cli_receive_smb(cli))
 971                 return False;
 972
 973         if (cli_is_error(cli))
 974                 return False;
 975
 976         clistr_pull(cli, cli->dev, smb_buf(cli->inbuf), sizeof(fstring), -1, STR_TERMINATE|STR_ASCII);
 977
 978         if (cli->protocol >= PROTOCOL_NT1 &&
 979             smb_buflen(cli->inbuf) == 3) {
 980                 /* almost certainly win95 - enable bug fixes */
 981                 cli->win95 = True;
 982         }
 983
 984         /* Make sure that we have the optional support 16-bit field.  WCT > 2 */
 985         /* Avoids issues when connecting to Win9x boxes sharing files */
 986
 987         cli->dfsroot = False;
 988         if ( (CVAL(cli->inbuf, smb_wct))>2 && cli->protocol >= PROTOCOL_LANMAN2 )
 989                 cli->dfsroot = (SVAL( cli->inbuf, smb_vwv2 ) & SMB_SHARE_IN_DFS) ? True : False;
 990
 991         cli->cnum = SVAL(cli->inbuf,smb_tid);
 992         return True;
 993 }
 994
 995 /****************************************************************************
 996  Send a tree disconnect.
 997 ****************************************************************************/
 998
 999 BOOL cli_tdis(struct cli_state *cli)
1000 {
1001         memset(cli->outbuf,'\0',smb_size);
1002         set_message(cli->outbuf,0,0,True);
1003         SCVAL(cli->outbuf,smb_com,SMBtdis);
1004         SSVAL(cli->outbuf,smb_tid,cli->cnum);
1005         cli_setup_packet(cli);
1006
1007         cli_send_smb(cli);
1008         if (!cli_receive_smb(cli))
1009                 return False;
1010
1011         if (cli_is_error(cli)) {
1012                 return False;
1013         }
1014
1015         cli->cnum = -1;
1016         return True;
1017 }
1018
1019 /****************************************************************************
1020  Send a negprot command.
1021 ****************************************************************************/
1022
1023 void cli_negprot_send(struct cli_state *cli)
1024 {
1025         char *p;
1026         int numprots;
1027
1028         if (cli->protocol < PROTOCOL_NT1)
1029                 cli->use_spnego = False;
1030
1031         memset(cli->outbuf,'\0',smb_size);
1032
1033         /* setup the protocol strings */
1034         set_message(cli->outbuf,0,0,True);
1035
1036         p = smb_buf(cli->outbuf);
1037         for (numprots=0;
1038              prots[numprots].name && prots[numprots].prot<=cli->protocol;
1039              numprots++) {
1040                 *p++ = 2;
1041                 p += clistr_push(cli, p, prots[numprots].name, -1, STR_TERMINATE);
1042         }
1043
1044         SCVAL(cli->outbuf,smb_com,SMBnegprot);
1045         cli_setup_bcc(cli, p);
1046         cli_setup_packet(cli);
1047
1048         SCVAL(smb_buf(cli->outbuf),0,2);
1049
1050         cli_send_smb(cli);
1051 }
1052
1053 /****************************************************************************
1054  Send a negprot command.
1055 ****************************************************************************/
1056
1057 BOOL cli_negprot(struct cli_state *cli)
1058 {
1059         char *p;
1060         int numprots;
1061         int plength;
1062
1063         if (cli->protocol < PROTOCOL_NT1)
1064                 cli->use_spnego = False;
1065
1066         memset(cli->outbuf,'\0',smb_size);
1067
1068         /* setup the protocol strings */
1069         for (plength=0,numprots=0;
1070              prots[numprots].name && prots[numprots].prot<=cli->protocol;
1071              numprots++)
1072                 plength += strlen(prots[numprots].name)+2;
1073
1074         set_message(cli->outbuf,0,plength,True);
1075
1076         p = smb_buf(cli->outbuf);
1077         for (numprots=0;
1078              prots[numprots].name && prots[numprots].prot<=cli->protocol;
1079              numprots++) {
1080                 *p++ = 2;
1081                 p += clistr_push(cli, p, prots[numprots].name, -1, STR_TERMINATE);
1082         }
1083
1084         SCVAL(cli->outbuf,smb_com,SMBnegprot);
1085         cli_setup_packet(cli);
1086
1087         SCVAL(smb_buf(cli->outbuf),0,2);
1088
1089         cli_send_smb(cli);
1090         if (!cli_receive_smb(cli))
1091                 return False;
1092
1093         show_msg(cli->inbuf);
1094
1095         if (cli_is_error(cli) ||
1096             ((int)SVAL(cli->inbuf,smb_vwv0) >= numprots)) {
1097                 return(False);
1098         }
1099
1100         cli->protocol = prots[SVAL(cli->inbuf,smb_vwv0)].prot;
1101
1102         if ((cli->protocol < PROTOCOL_NT1) && cli->sign_info.mandatory_signing) {
1103                 DEBUG(0,("cli_negprot: SMB signing is mandatory and the selected protocol level doesn't support it.\n"));
1104                 return False;
1105         }
1106
1107         if (cli->protocol >= PROTOCOL_NT1) {
1108                 /* NT protocol */
1109                 cli->sec_mode = CVAL(cli->inbuf,smb_vwv1);
1110                 cli->max_mux = SVAL(cli->inbuf, smb_vwv1+1);
1111                 cli->max_xmit = IVAL(cli->inbuf,smb_vwv3+1);
1112                 cli->sesskey = IVAL(cli->inbuf,smb_vwv7+1);
1113                 cli->serverzone = SVALS(cli->inbuf,smb_vwv15+1);
1114                 cli->serverzone *= 60;
1115                 /* this time arrives in real GMT */
1116                 cli->servertime = interpret_long_date(cli->inbuf+smb_vwv11+1);
1117                 cli->secblob = data_blob(smb_buf(cli->inbuf),smb_buflen(cli->inbuf));
1118                 cli->capabilities = IVAL(cli->inbuf,smb_vwv9+1);
1119                 if (cli->capabilities & CAP_RAW_MODE) {
1120                         cli->readbraw_supported = True;
1121                         cli->writebraw_supported = True;
1122                 }
1123                 /* work out if they sent us a workgroup */
1124                 if (!(cli->capabilities & CAP_EXTENDED_SECURITY) &&
1125                     smb_buflen(cli->inbuf) > 8) {
1126                         clistr_pull(cli, cli->server_domain,
1127                                     smb_buf(cli->inbuf)+8, sizeof(cli->server_domain),
1128                                     smb_buflen(cli->inbuf)-8, STR_UNICODE|STR_NOALIGN);
1129                 }
1130
1131                 /*
1132                  * As signing is slow we only turn it on if either the client or
1133                  * the server require it. JRA.
1134                  */
1135
1136                 if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_REQUIRED) {
1137                         /* Fail if server says signing is mandatory and we don't want to support it. */
1138                         if (!cli->sign_info.allow_smb_signing) {
1139                                 DEBUG(0,("cli_negprot: SMB signing is mandatory and we have disabled it.\n"));
1140                                 return False;
1141                         }
1142                         cli->sign_info.negotiated_smb_signing = True;
1143                         cli->sign_info.mandatory_signing = True;
1144                 } else if (cli->sign_info.mandatory_signing && cli->sign_info.allow_smb_signing) {
1145                         /* Fail if client says signing is mandatory and the server doesn't support it. */
1146                         if (!(cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED)) {
1147                                 DEBUG(1,("cli_negprot: SMB signing is mandatory and the server doesn't support it.\n"));
1148                                 return False;
1149                         }
1150                         cli->sign_info.negotiated_smb_signing = True;
1151                         cli->sign_info.mandatory_signing = True;
1152                 } else if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED) {
1153                         cli->sign_info.negotiated_smb_signing = True;
1154                 }
1155
1156                 if (cli->capabilities & (CAP_LARGE_READX|CAP_LARGE_WRITEX)) {
1157                         SAFE_FREE(cli->outbuf);
1158                         SAFE_FREE(cli->inbuf);
1159                         cli->outbuf = (char *)SMB_MALLOC(CLI_MAX_LARGE_READX_SIZE+SAFETY_MARGIN);
1160                         cli->inbuf = (char *)SMB_MALLOC(CLI_MAX_LARGE_READX_SIZE+SAFETY_MARGIN);
1161                         cli->bufsize = CLI_MAX_LARGE_READX_SIZE;
1162                 }
1163
1164         } else if (cli->protocol >= PROTOCOL_LANMAN1) {
1165                 cli->use_spnego = False;
1166                 cli->sec_mode = SVAL(cli->inbuf,smb_vwv1);
1167                 cli->max_xmit = SVAL(cli->inbuf,smb_vwv2);
1168                 cli->max_mux = SVAL(cli->inbuf, smb_vwv3);
1169                 cli->sesskey = IVAL(cli->inbuf,smb_vwv6);
1170                 cli->serverzone = SVALS(cli->inbuf,smb_vwv10);
1171                 cli->serverzone *= 60;
1172                 /* this time is converted to GMT by make_unix_date */
1173                 cli->servertime = make_unix_date(cli->inbuf+smb_vwv8);
1174                 cli->readbraw_supported = ((SVAL(cli->inbuf,smb_vwv5) & 0x1) != 0);
1175                 cli->writebraw_supported = ((SVAL(cli->inbuf,smb_vwv5) & 0x2) != 0);
1176                 cli->secblob = data_blob(smb_buf(cli->inbuf),smb_buflen(cli->inbuf));
1177         } else {
1178                 /* the old core protocol */
1179                 cli->use_spnego = False;
1180                 cli->sec_mode = 0;
1181                 cli->serverzone = TimeDiff(time(NULL));
1182         }
1183
1184         cli->max_xmit = MIN(cli->max_xmit, CLI_BUFFER_SIZE);
1185
1186         /* a way to force ascii SMB */
1187         if (getenv("CLI_FORCE_ASCII"))
1188                 cli->capabilities &= ~CAP_UNICODE;
1189
1190         return True;
1191 }
1192
1193 /****************************************************************************
1194  Send a session request. See rfc1002.txt 4.3 and 4.3.2.
1195 ****************************************************************************/
1196
1197 BOOL cli_session_request(struct cli_state *cli,
1198                          struct nmb_name *calling, struct nmb_name *called)
1199 {
1200         char *p;
1201         int len = 4;
1202
1203         memcpy(&(cli->calling), calling, sizeof(*calling));
1204         memcpy(&(cli->called ), called , sizeof(*called ));
1205
1206         /* put in the destination name */
1207         p = cli->outbuf+len;
1208         name_mangle(cli->called .name, p, cli->called .name_type);
1209         len += name_len(p);
1210
1211         /* and my name */
1212         p = cli->outbuf+len;
1213         name_mangle(cli->calling.name, p, cli->calling.name_type);
1214         len += name_len(p);
1215
1216         /* 445 doesn't have session request */
1217         if (cli->port == 445)
1218                 return True;
1219
1220         /* send a session request (RFC 1002) */
1221         /* setup the packet length
1222          * Remove four bytes from the length count, since the length
1223          * field in the NBT Session Service header counts the number
1224          * of bytes which follow.  The cli_send_smb() function knows
1225          * about this and accounts for those four bytes.
1226          * CRH.
1227          */
1228         len -= 4;
1229         _smb_setlen(cli->outbuf,len);
1230         SCVAL(cli->outbuf,0,0x81);
1231
1232         cli_send_smb(cli);
1233         DEBUG(5,("Sent session request\n"));
1234
1235         if (!cli_receive_smb(cli))
1236                 return False;
1237
1238         if (CVAL(cli->inbuf,0) == 0x84) {
1239                 /* C. Hoch  9/14/95 Start */
1240                 /* For information, here is the response structure.
1241                  * We do the byte-twiddling to for portability.
1242                 struct RetargetResponse{
1243                 unsigned char type;
1244                 unsigned char flags;
1245                 int16 length;
1246                 int32 ip_addr;
1247                 int16 port;
1248                 };
1249                 */
1250                 int port = (CVAL(cli->inbuf,8)<<8)+CVAL(cli->inbuf,9);
1251                 /* SESSION RETARGET */
1252                 putip((char *)&cli->dest_ip,cli->inbuf+4);
1253
1254                 cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ip, port, LONG_CONNECT_TIMEOUT);
1255                 if (cli->fd == -1)
1256                         return False;
1257
1258                 DEBUG(3,("Retargeted\n"));
1259
1260                 set_socket_options(cli->fd,user_socket_options);
1261
1262                 /* Try again */
1263                 {
1264                         static int depth;
1265                         BOOL ret;
1266                         if (depth > 4) {
1267                                 DEBUG(0,("Retarget recursion - failing\n"));
1268                                 return False;
1269                         }
1270                         depth++;
1271                         ret = cli_session_request(cli, calling, called);
1272                         depth--;
1273                         return ret;
1274                 }
1275         } /* C. Hoch 9/14/95 End */
1276
1277         if (CVAL(cli->inbuf,0) != 0x82) {
1278                 /* This is the wrong place to put the error... JRA. */
1279                 cli->rap_error = CVAL(cli->inbuf,4);
1280                 return False;
1281         }
1282         return(True);
1283 }
1284
1285 /****************************************************************************
1286  Open the client sockets.
1287 ****************************************************************************/
1288
1289 BOOL cli_connect(struct cli_state *cli, const char *host, struct in_addr *ip)
1290 {
1291         int name_type = 0x20;
1292         char *p;
1293
1294         /* reasonable default hostname */
1295         if (!host) host = "*SMBSERVER";
1296
1297         fstrcpy(cli->desthost, host);
1298
1299         /* allow hostnames of the form NAME#xx and do a netbios lookup */
1300         if ((p = strchr(cli->desthost, '#'))) {
1301                 name_type = strtol(p+1, NULL, 16);
1302                 *p = 0;
1303         }
1304
1305         if (!ip || is_zero_ip(*ip)) {
1306                 if (!resolve_name(cli->desthost, &cli->dest_ip, name_type)) {
1307                         return False;
1308                 }
1309                 if (ip) *ip = cli->dest_ip;
1310         } else {
1311                 cli->dest_ip = *ip;
1312         }
1313
1314         if (getenv("LIBSMB_PROG")) {
1315                 cli->fd = sock_exec(getenv("LIBSMB_PROG"));
1316         } else {
1317                 /* try 445 first, then 139 */
1318                 int port = cli->port?cli->port:445;
1319                 cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ip,
1320                                           port, cli->timeout);
1321                 if (cli->fd == -1 && cli->port == 0) {
1322                         port = 139;
1323                         cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ip,
1324                                                   port, cli->timeout);
1325                 }
1326                 if (cli->fd != -1)
1327                         cli->port = port;
1328         }
1329         if (cli->fd == -1) {
1330                 DEBUG(1,("Error connecting to %s (%s)\n",
1331                          ip?inet_ntoa(*ip):host,strerror(errno)));
1332                 return False;
1333         }
1334
1335         set_socket_options(cli->fd,user_socket_options);
1336
1337         return True;
1338 }
1339
1340 /**
1341    establishes a connection to after the negprot.
1342    @param output_cli A fully initialised cli structure, non-null only on success
1343    @param dest_host The netbios name of the remote host
1344    @param dest_ip (optional) The the destination IP, NULL for name based lookup
1345    @param port (optional) The destination port (0 for default)
1346    @param retry BOOL. Did this connection fail with a retryable error ?
1347
1348 */
1349 NTSTATUS cli_start_connection(struct cli_state **output_cli,
1350                               const char *my_name,
1351                               const char *dest_host,
1352                               struct in_addr *dest_ip, int port,
1353                               int signing_state, int flags,
1354                               BOOL *retry)
1355 {
1356         NTSTATUS nt_status;
1357         struct nmb_name calling;
1358         struct nmb_name called;
1359         struct cli_state *cli;
1360         struct in_addr ip;
1361
1362         if (retry)
1363                 *retry = False;
1364
1365         if (!my_name)
1366                 my_name = global_myname();
1367
1368         if (!(cli = cli_initialise(NULL)))
1369                 return NT_STATUS_NO_MEMORY;
1370
1371         make_nmb_name(&calling, my_name, 0x0);
1372         make_nmb_name(&called , dest_host, 0x20);
1373
1374         if (cli_set_port(cli, port) != port) {
1375                 cli_shutdown(cli);
1376                 return NT_STATUS_UNSUCCESSFUL;
1377         }
1378
1379         cli_set_timeout(cli, 10000); /* 10 seconds. */
1380
1381         if (dest_ip)
1382                 ip = *dest_ip;
1383         else
1384                 ZERO_STRUCT(ip);
1385
1386 again:
1387
1388         DEBUG(3,("Connecting to host=%s\n", dest_host));
1389
1390         if (!cli_connect(cli, dest_host, &ip)) {
1391                 DEBUG(1,("cli_full_connection: failed to connect to %s (%s)\n",
1392                          nmb_namestr(&called), inet_ntoa(ip)));
1393                 cli_shutdown(cli);
1394                 return NT_STATUS_UNSUCCESSFUL;
1395         }
1396
1397         if (retry)
1398                 *retry = True;
1399
1400         if (!cli_session_request(cli, &calling, &called)) {
1401                 char *p;
1402                 DEBUG(1,("session request to %s failed (%s)\n",
1403                          called.name, cli_errstr(cli)));
1404                 if ((p=strchr(called.name, '.')) && !is_ipaddress(called.name)) {
1405                         *p = 0;
1406                         goto again;
1407                 }
1408                 if (strcmp(called.name, "*SMBSERVER")) {
1409                         make_nmb_name(&called , "*SMBSERVER", 0x20);
1410                         goto again;
1411                 }
1412                 return NT_STATUS_UNSUCCESSFUL;
1413         }
1414
1415         cli_setup_signing_state(cli, signing_state);
1416
1417         if (flags & CLI_FULL_CONNECTION_DONT_SPNEGO)
1418                 cli->use_spnego = False;
1419         else if (flags & CLI_FULL_CONNECTION_USE_KERBEROS)
1420                 cli->use_kerberos = True;
1421
1422         if (!cli_negprot(cli)) {
1423                 DEBUG(1,("failed negprot\n"));
1424                 nt_status = NT_STATUS_UNSUCCESSFUL;
1425                 cli_shutdown(cli);
1426                 return nt_status;
1427         }
1428
1429         *output_cli = cli;
1430         return NT_STATUS_OK;
1431 }
1432
1433
1434 /**
1435    establishes a connection right up to doing tconX, password specified.
1436    @param output_cli A fully initialised cli structure, non-null only on success
1437    @param dest_host The netbios name of the remote host
1438    @param dest_ip (optional) The the destination IP, NULL for name based lookup
1439    @param port (optional) The destination port (0 for default)
1440    @param service (optional) The share to make the connection to.  Should be 'unqualified' in any way.
1441    @param service_type The 'type' of serivice.
1442    @param user Username, unix string
1443    @param domain User's domain
1444    @param password User's password, unencrypted unix string.
1445    @param retry BOOL. Did this connection fail with a retryable error ?
1446 */
1447
1448 NTSTATUS cli_full_connection(struct cli_state **output_cli,
1449                              const char *my_name,
1450                              const char *dest_host,
1451                              struct in_addr *dest_ip, int port,
1452                              const char *service, const char *service_type,
1453                              const char *user, const char *domain,
1454                              const char *password, int flags,
1455                              int signing_state,
1456                              BOOL *retry)
1457 {
1458         NTSTATUS nt_status;
1459         struct cli_state *cli = NULL;
1460
1461         nt_status = cli_start_connection(&cli, my_name, dest_host,
1462                                          dest_ip, port, signing_state, flags, retry);
1463
1464         if (!NT_STATUS_IS_OK(nt_status)) {
1465                 return nt_status;
1466         }
1467
1468         if (!cli_session_setup(cli, user, password, strlen(password)+1,
1469                                password, strlen(password)+1,
1470                                domain)) {
1471                 if ((flags & CLI_FULL_CONNECTION_ANNONYMOUS_FALLBACK)
1472                     && cli_session_setup(cli, "", "", 0, "", 0, domain)) {
1473                 } else {
1474                         nt_status = cli_nt_error(cli);
1475                         DEBUG(1,("failed session setup with %s\n", nt_errstr(nt_status)));
1476                         cli_shutdown(cli);
1477                         if (NT_STATUS_IS_OK(nt_status))
1478                                 nt_status = NT_STATUS_UNSUCCESSFUL;
1479                         return nt_status;
1480                 }
1481         }
1482
1483         if (service) {
1484                 if (!cli_send_tconX(cli, service, service_type,
1485                                     password, strlen(password)+1)) {
1486                         nt_status = cli_nt_error(cli);
1487                         DEBUG(1,("failed tcon_X with %s\n", nt_errstr(nt_status)));
1488                         cli_shutdown(cli);
1489                         if (NT_STATUS_IS_OK(nt_status)) {
1490                                 nt_status = NT_STATUS_UNSUCCESSFUL;
1491                         }
1492                         return nt_status;
1493                 }
1494         }
1495
1496         cli_init_creds(cli, user, domain, password);
1497
1498         *output_cli = cli;
1499         return NT_STATUS_OK;
1500 }
1501
1502 /****************************************************************************
1503  Attempt a NetBIOS session request, falling back to *SMBSERVER if needed.
1504 ****************************************************************************/
1505
1506 BOOL attempt_netbios_session_request(struct cli_state *cli, const char *srchost, const char *desthost,
1507                                      struct in_addr *pdest_ip)
1508 {
1509         struct nmb_name calling, called;
1510
1511         make_nmb_name(&calling, srchost, 0x0);
1512
1513         /*
1514          * If the called name is an IP address
1515          * then use *SMBSERVER immediately.
1516          */
1517
1518         if(is_ipaddress(desthost))
1519                 make_nmb_name(&called, "*SMBSERVER", 0x20);
1520         else
1521                 make_nmb_name(&called, desthost, 0x20);
1522
1523         if (!cli_session_request(cli, &calling, &called)) {
1524                 struct nmb_name smbservername;
1525
1526                 make_nmb_name(&smbservername , "*SMBSERVER", 0x20);
1527
1528                 /*
1529                  * If the name wasn't *SMBSERVER then
1530                  * try with *SMBSERVER if the first name fails.
1531                  */
1532
1533                 if (nmb_name_equal(&called, &smbservername)) {
1534
1535                         /*
1536                          * The name used was *SMBSERVER, don't bother with another name.
1537                          */
1538
1539                         DEBUG(0,("attempt_netbios_session_request: %s rejected the session for name *SMBSERVER \
1540 with error %s.\n", desthost, cli_errstr(cli) ));
1541                         return False;
1542                 }
1543
1544                 /*
1545                  * We need to close the connection here but can't call cli_shutdown as
1546                  * will free an allocated cli struct. cli_close_connection was invented
1547                  * for this purpose. JRA. Based on work by "Kim R. Pedersen" <krp@filanet.dk>.
1548                  */
1549
1550                 cli_close_connection(cli);
1551
1552                 if (!cli_initialise(cli) ||
1553                                 !cli_connect(cli, desthost, pdest_ip) ||
1554                                 !cli_session_request(cli, &calling, &smbservername)) {
1555                         DEBUG(0,("attempt_netbios_session_request: %s rejected the session for \
1556 name *SMBSERVER with error %s\n", desthost, cli_errstr(cli) ));
1557                         return False;
1558                 }
1559         }
1560
1561         return True;
1562 }
1563
1564
1565
1566
1567
1568 /****************************************************************************
1569  Send an old style tcon.
1570 ****************************************************************************/
1571 NTSTATUS cli_raw_tcon(struct cli_state *cli,
1572                       const char *service, const char *pass, const char *dev,
1573                       uint16 *max_xmit, uint16 *tid)
1574 {
1575         char *p;
1576
1577         if (!lp_client_plaintext_auth() && (*pass)) {
1578                 DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
1579                           " is disabled\n"));
1580                 return NT_STATUS_ACCESS_DENIED;
1581         }
1582
1583         memset(cli->outbuf,'\0',smb_size);
1584         memset(cli->inbuf,'\0',smb_size);
1585
1586         set_message(cli->outbuf, 0, 0, True);
1587         SCVAL(cli->outbuf,smb_com,SMBtcon);
1588         cli_setup_packet(cli);
1589
1590         p = smb_buf(cli->outbuf);
1591         *p++ = 4; p += clistr_push(cli, p, service, -1, STR_TERMINATE | STR_NOALIGN);
1592         *p++ = 4; p += clistr_push(cli, p, pass, -1, STR_TERMINATE | STR_NOALIGN);
1593         *p++ = 4; p += clistr_push(cli, p, dev, -1, STR_TERMINATE | STR_NOALIGN);
1594
1595         cli_setup_bcc(cli, p);
1596
1597         cli_send_smb(cli);
1598         if (!cli_receive_smb(cli)) {
1599                 return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
1600         }
1601
1602         if (cli_is_error(cli)) {
1603                 return cli_nt_error(cli);
1604         }
1605
1606         *max_xmit = SVAL(cli->inbuf, smb_vwv0);
1607         *tid = SVAL(cli->inbuf, smb_vwv1);
1608
1609         return NT_STATUS_OK;
1610 }
1611
1612 /* Return a cli_state pointing at the IPC$ share for the given server */
1613
1614 struct cli_state *get_ipc_connect(char *server, struct in_addr *server_ip,
1615                                          struct user_auth_info *user_info)
1616 {
1617         struct cli_state *cli;
1618         pstring myname;
1619         NTSTATUS nt_status;
1620
1621         get_myname(myname);
1622
1623         nt_status = cli_full_connection(&cli, myname, server, server_ip, 0, "IPC$", "IPC",
1624                                         user_info->username, lp_workgroup(), user_info->password,
1625                                         CLI_FULL_CONNECTION_ANNONYMOUS_FALLBACK, Undefined, NULL);
1626
1627         if (NT_STATUS_IS_OK(nt_status)) {
1628                 return cli;
1629         } else if (is_ipaddress(server)) {
1630             /* windows 9* needs a correct NMB name for connections */
1631             fstring remote_name;
1632
1633             if (name_status_find("*", 0, 0, *server_ip, remote_name)) {
1634                 cli = get_ipc_connect(remote_name, server_ip, user_info);
1635                 if (cli)
1636                     return cli;
1637             }
1638         }
1639         return NULL;
1640 }
1641
1642 /*
1643  * Given the IP address of a master browser on the network, return its
1644  * workgroup and connect to it.
1645  *
1646  * This function is provided to allow additional processing beyond what
1647  * get_ipc_connect_master_ip_bcast() does, e.g. to retrieve the list of master
1648  * browsers and obtain each master browsers' list of domains (in case the
1649  * first master browser is recently on the network and has not yet
1650  * synchronized with other master browsers and therefore does not yet have the
1651  * entire network browse list)
1652  */
1653
1654 struct cli_state *get_ipc_connect_master_ip(struct ip_service * mb_ip, pstring workgroup, struct user_auth_info *user_info)
1655 {
1656         static fstring name;
1657         struct cli_state *cli;
1658         struct in_addr server_ip;
1659
1660         DEBUG(99, ("Looking up name of master browser %s\n",
1661                    inet_ntoa(mb_ip->ip)));
1662
1663         /*
1664          * Do a name status query to find out the name of the master browser.
1665          * We use <01><02>__MSBROWSE__<02>#01 if *#00 fails because a domain
1666          * master browser will not respond to a wildcard query (or, at least,
1667          * an NT4 server acting as the domain master browser will not).
1668          *
1669          * We might be able to use ONLY the query on MSBROWSE, but that's not
1670          * yet been tested with all Windows versions, so until it is, leave
1671          * the original wildcard query as the first choice and fall back to
1672          * MSBROWSE if the wildcard query fails.
1673          */
1674         if (!name_status_find("*", 0, 0x1d, mb_ip->ip, name) &&
1675             !name_status_find(MSBROWSE, 1, 0x1d, mb_ip->ip, name)) {
1676
1677                 DEBUG(99, ("Could not retrieve name status for %s\n",
1678                            inet_ntoa(mb_ip->ip)));
1679                 return NULL;
1680         }
1681
1682         if (!find_master_ip(name, &server_ip)) {
1683                 DEBUG(99, ("Could not find master ip for %s\n", name));
1684                 return NULL;
1685         }
1686
1687                 pstrcpy(workgroup, name);
1688
1689                 DEBUG(4, ("found master browser %s, %s\n",
1690                   name, inet_ntoa(mb_ip->ip)));
1691
1692                 cli = get_ipc_connect(inet_ntoa(server_ip), &server_ip, user_info);
1693
1694                 return cli;
1695
1696 }
1697
1698 /*
1699  * Return the IP address and workgroup of a master browser on the network, and
1700  * connect to it.
1701  */
1702
1703 struct cli_state *get_ipc_connect_master_ip_bcast(pstring workgroup, struct user_auth_info *user_info)
1704 {
1705         struct ip_service *ip_list;
1706         struct cli_state *cli;
1707         int i, count;
1708
1709         DEBUG(99, ("Do broadcast lookup for workgroups on local network\n"));
1710
1711         /* Go looking for workgroups by broadcasting on the local network */
1712
1713         if (!name_resolve_bcast(MSBROWSE, 1, &ip_list, &count)) {
1714                 DEBUG(99, ("No master browsers responded\n"));
1715                 return False;
1716         }
1717
1718         for (i = 0; i < count; i++) {
1719             DEBUG(99, ("Found master browser %s\n", inet_ntoa(ip_list[i].ip)));
1720
1721             cli = get_ipc_connect_master_ip(&ip_list[i], workgroup, user_info);
1722             if (cli)
1723                     return(cli);
1724         }
1725
1726         return NULL;
1727 }