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 NTSTATUS cli_session_setup_lanman2(struct cli_state *cli,
  59                                           const char *user,
  60                                           const char *pass, size_t passlen,
  61                                           const char *workgroup)
  62 {
  63         DATA_BLOB session_key = data_blob(NULL, 0);
  64         DATA_BLOB lm_response = data_blob(NULL, 0);
  65         fstring pword;
  66         char *p;
  67
  68         if (passlen > sizeof(pword)-1) {
  69                 return NT_STATUS_INVALID_PARAMETER;
  70         }
  71
  72         /* LANMAN servers predate NT status codes and Unicode and ignore those
  73            smb flags so we must disable the corresponding default capabilities
  74            that would otherwise cause the Unicode and NT Status flags to be
  75            set (and even returned by the server) */
  76
  77         cli->capabilities &= ~(CAP_UNICODE | CAP_STATUS32);
  78
  79         /* if in share level security then don't send a password now */
  80         if (!(cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL))
  81                 passlen = 0;
  82
  83         if (passlen > 0 && (cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && passlen != 24) {
  84                 /* Encrypted mode needed, and non encrypted password supplied. */
  85                 lm_response = data_blob(NULL, 24);
  86                 if (!SMBencrypt(pass, cli->secblob.data,(uchar *)lm_response.data)) {
  87                         DEBUG(1, ("Password is > 14 chars in length, and is therefore incompatible with Lanman authentication\n"));
  88                         return NT_STATUS_ACCESS_DENIED;
  89                 }
  90         } else if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && passlen == 24) {
  91                 /* Encrypted mode needed, and encrypted password supplied. */
  92                 lm_response = data_blob(pass, passlen);
  93         } else if (passlen > 0) {
  94                 /* Plaintext mode needed, assume plaintext supplied. */
  95                 passlen = clistr_push(cli, pword, pass, sizeof(pword), STR_TERMINATE);
  96                 lm_response = data_blob(pass, passlen);
  97         }
  98
  99         /* send a session setup command */
 100         memset(cli->outbuf,'\0',smb_size);
 101         set_message(cli->outbuf,10, 0, True);
 102         SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
 103         cli_setup_packet(cli);
 104
 105         SCVAL(cli->outbuf,smb_vwv0,0xFF);
 106         SSVAL(cli->outbuf,smb_vwv2,cli->max_xmit);
 107         SSVAL(cli->outbuf,smb_vwv3,2);
 108         SSVAL(cli->outbuf,smb_vwv4,1);
 109         SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
 110         SSVAL(cli->outbuf,smb_vwv7,lm_response.length);
 111
 112         p = smb_buf(cli->outbuf);
 113         memcpy(p,lm_response.data,lm_response.length);
 114         p += lm_response.length;
 115         p += clistr_push(cli, p, user, -1, STR_TERMINATE|STR_UPPER);
 116         p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE|STR_UPPER);
 117         p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
 118         p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
 119         cli_setup_bcc(cli, p);
 120
 121         if (!cli_send_smb(cli) || !cli_receive_smb(cli)) {
 122                 return cli_nt_error(cli);
 123         }
 124
 125         show_msg(cli->inbuf);
 126
 127         if (cli_is_error(cli)) {
 128                 return cli_nt_error(cli);
 129         }
 130
 131         /* use the returned vuid from now on */
 132         cli->vuid = SVAL(cli->inbuf,smb_uid);
 133         fstrcpy(cli->user_name, user);
 134
 135         if (session_key.data) {
 136                 /* Have plaintext orginal */
 137                 cli_set_session_key(cli, session_key);
 138         }
 139
 140         return NT_STATUS_OK;
 141 }
 142
 143 /****************************************************************************
 144  Work out suitable capabilities to offer the server.
 145 ****************************************************************************/
 146
 147 static uint32 cli_session_setup_capabilities(struct cli_state *cli)
 148 {
 149         uint32 capabilities = CAP_NT_SMBS;
 150
 151         if (!cli->force_dos_errors)
 152                 capabilities |= CAP_STATUS32;
 153
 154         if (cli->use_level_II_oplocks)
 155                 capabilities |= CAP_LEVEL_II_OPLOCKS;
 156
 157         capabilities |= (cli->capabilities & (CAP_UNICODE|CAP_LARGE_FILES|CAP_LARGE_READX|CAP_LARGE_WRITEX|CAP_DFS));
 158         return capabilities;
 159 }
 160
 161 /****************************************************************************
 162  Do a NT1 guest session setup.
 163 ****************************************************************************/
 164
 165 static NTSTATUS cli_session_setup_guest(struct cli_state *cli)
 166 {
 167         char *p;
 168         uint32 capabilities = cli_session_setup_capabilities(cli);
 169
 170         memset(cli->outbuf, '\0', smb_size);
 171         set_message(cli->outbuf,13,0,True);
 172         SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
 173         cli_setup_packet(cli);
 174
 175         SCVAL(cli->outbuf,smb_vwv0,0xFF);
 176         SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
 177         SSVAL(cli->outbuf,smb_vwv3,2);
 178         SSVAL(cli->outbuf,smb_vwv4,cli->pid);
 179         SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
 180         SSVAL(cli->outbuf,smb_vwv7,0);
 181         SSVAL(cli->outbuf,smb_vwv8,0);
 182         SIVAL(cli->outbuf,smb_vwv11,capabilities);
 183         p = smb_buf(cli->outbuf);
 184         p += clistr_push(cli, p, "", -1, STR_TERMINATE); /* username */
 185         p += clistr_push(cli, p, "", -1, STR_TERMINATE); /* workgroup */
 186         p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
 187         p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
 188         cli_setup_bcc(cli, p);
 189
 190         if (!cli_send_smb(cli) || !cli_receive_smb(cli)) {
 191                 return cli_nt_error(cli);
 192         }
 193
 194         show_msg(cli->inbuf);
 195
 196         if (cli_is_error(cli)) {
 197                 return cli_nt_error(cli);
 198         }
 199
 200         cli->vuid = SVAL(cli->inbuf,smb_uid);
 201
 202         p = smb_buf(cli->inbuf);
 203         p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
 204         p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
 205         p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
 206
 207         if (strstr(cli->server_type, "Samba")) {
 208                 cli->is_samba = True;
 209         }
 210
 211         fstrcpy(cli->user_name, "");
 212
 213         return NT_STATUS_OK;
 214 }
 215
 216 /****************************************************************************
 217  Do a NT1 plaintext session setup.
 218 ****************************************************************************/
 219
 220 static NTSTATUS cli_session_setup_plaintext(struct cli_state *cli,
 221                                             const char *user, const char *pass,
 222                                             const char *workgroup)
 223 {
 224         uint32 capabilities = cli_session_setup_capabilities(cli);
 225         char *p;
 226         fstring lanman;
 227
 228         fstr_sprintf( lanman, "Samba %s", SAMBA_VERSION_STRING);
 229
 230         memset(cli->outbuf, '\0', smb_size);
 231         set_message(cli->outbuf,13,0,True);
 232         SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
 233         cli_setup_packet(cli);
 234
 235         SCVAL(cli->outbuf,smb_vwv0,0xFF);
 236         SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
 237         SSVAL(cli->outbuf,smb_vwv3,2);
 238         SSVAL(cli->outbuf,smb_vwv4,cli->pid);
 239         SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
 240         SSVAL(cli->outbuf,smb_vwv8,0);
 241         SIVAL(cli->outbuf,smb_vwv11,capabilities);
 242         p = smb_buf(cli->outbuf);
 243
 244         /* check wether to send the ASCII or UNICODE version of the password */
 245
 246         if ( (capabilities & CAP_UNICODE) == 0 ) {
 247                 p += clistr_push(cli, p, pass, -1, STR_TERMINATE); /* password */
 248                 SSVAL(cli->outbuf,smb_vwv7,PTR_DIFF(p, smb_buf(cli->outbuf)));
 249         }
 250         else {
 251                 p += clistr_push(cli, p, pass, -1, STR_UNICODE|STR_TERMINATE); /* unicode password */
 252                 SSVAL(cli->outbuf,smb_vwv8,PTR_DIFF(p, smb_buf(cli->outbuf)));
 253         }
 254
 255         p += clistr_push(cli, p, user, -1, STR_TERMINATE); /* username */
 256         p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE); /* workgroup */
 257         p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
 258         p += clistr_push(cli, p, lanman, -1, STR_TERMINATE);
 259         cli_setup_bcc(cli, p);
 260
 261         if (!cli_send_smb(cli) || !cli_receive_smb(cli)) {
 262                 return cli_nt_error(cli);
 263         }
 264
 265         show_msg(cli->inbuf);
 266
 267         if (cli_is_error(cli)) {
 268                 return cli_nt_error(cli);
 269         }
 270
 271         cli->vuid = SVAL(cli->inbuf,smb_uid);
 272         p = smb_buf(cli->inbuf);
 273         p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
 274         p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
 275         p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
 276         fstrcpy(cli->user_name, user);
 277
 278         if (strstr(cli->server_type, "Samba")) {
 279                 cli->is_samba = True;
 280         }
 281
 282         return NT_STATUS_OK;
 283 }
 284
 285 /****************************************************************************
 286    do a NT1 NTLM/LM encrypted session setup - for when extended security
 287    is not negotiated.
 288    @param cli client state to create do session setup on
 289    @param user username
 290    @param pass *either* cleartext password (passlen !=24) or LM response.
 291    @param ntpass NT response, implies ntpasslen >=24, implies pass is not clear
 292    @param workgroup The user's domain.
 293 ****************************************************************************/
 294
 295 static NTSTATUS cli_session_setup_nt1(struct cli_state *cli, const char *user,
 296                                       const char *pass, size_t passlen,
 297                                       const char *ntpass, size_t ntpasslen,
 298                                       const char *workgroup)
 299 {
 300         uint32 capabilities = cli_session_setup_capabilities(cli);
 301         DATA_BLOB lm_response = data_blob(NULL, 0);
 302         DATA_BLOB nt_response = data_blob(NULL, 0);
 303         DATA_BLOB session_key = data_blob(NULL, 0);
 304         NTSTATUS result;
 305         char *p;
 306
 307         if (passlen == 0) {
 308                 /* do nothing - guest login */
 309         } else if (passlen != 24) {
 310                 if (lp_client_ntlmv2_auth()) {
 311                         DATA_BLOB server_chal;
 312                         DATA_BLOB names_blob;
 313                         server_chal = data_blob(cli->secblob.data, MIN(cli->secblob.length, 8));
 314
 315                         /* note that the 'workgroup' here is a best guess - we don't know
 316                            the server's domain at this point.  The 'server name' is also
 317                            dodgy...
 318                         */
 319                         names_blob = NTLMv2_generate_names_blob(cli->called.name, workgroup);
 320
 321                         if (!SMBNTLMv2encrypt(user, workgroup, pass, &server_chal,
 322                                               &names_blob,
 323                                               &lm_response, &nt_response, &session_key)) {
 324                                 data_blob_free(&names_blob);
 325                                 data_blob_free(&server_chal);
 326                                 return NT_STATUS_ACCESS_DENIED;
 327                         }
 328                         data_blob_free(&names_blob);
 329                         data_blob_free(&server_chal);
 330
 331                 } else {
 332                         uchar nt_hash[16];
 333                         E_md4hash(pass, nt_hash);
 334
 335 #ifdef LANMAN_ONLY
 336                         nt_response = data_blob(NULL, 0);
 337 #else
 338                         nt_response = data_blob(NULL, 24);
 339                         SMBNTencrypt(pass,cli->secblob.data,nt_response.data);
 340 #endif
 341                         /* non encrypted password supplied. Ignore ntpass. */
 342                         if (lp_client_lanman_auth()) {
 343                                 lm_response = data_blob(NULL, 24);
 344                                 if (!SMBencrypt(pass,cli->secblob.data, lm_response.data)) {
 345                                         /* Oops, the LM response is invalid, just put
 346                                            the NT response there instead */
 347                                         data_blob_free(&lm_response);
 348                                         lm_response = data_blob(nt_response.data, nt_response.length);
 349                                 }
 350                         } else {
 351                                 /* LM disabled, place NT# in LM field instead */
 352                                 lm_response = data_blob(nt_response.data, nt_response.length);
 353                         }
 354
 355                         session_key = data_blob(NULL, 16);
 356 #ifdef LANMAN_ONLY
 357                         E_deshash(pass, session_key.data);
 358                         memset(&session_key.data[8], '\0', 8);
 359 #else
 360                         SMBsesskeygen_ntv1(nt_hash, NULL, session_key.data);
 361 #endif
 362                 }
 363 #ifdef LANMAN_ONLY
 364                 cli_simple_set_signing(cli, session_key, lm_response);
 365 #else
 366                 cli_simple_set_signing(cli, session_key, nt_response);
 367 #endif
 368         } else {
 369                 /* pre-encrypted password supplied.  Only used for
 370                    security=server, can't do
 371                    signing because we don't have original key */
 372
 373                 lm_response = data_blob(pass, passlen);
 374                 nt_response = data_blob(ntpass, ntpasslen);
 375         }
 376
 377         /* send a session setup command */
 378         memset(cli->outbuf,'\0',smb_size);
 379
 380         set_message(cli->outbuf,13,0,True);
 381         SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
 382         cli_setup_packet(cli);
 383
 384         SCVAL(cli->outbuf,smb_vwv0,0xFF);
 385         SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
 386         SSVAL(cli->outbuf,smb_vwv3,2);
 387         SSVAL(cli->outbuf,smb_vwv4,cli->pid);
 388         SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
 389         SSVAL(cli->outbuf,smb_vwv7,lm_response.length);
 390         SSVAL(cli->outbuf,smb_vwv8,nt_response.length);
 391         SIVAL(cli->outbuf,smb_vwv11,capabilities);
 392         p = smb_buf(cli->outbuf);
 393         if (lm_response.length) {
 394                 memcpy(p,lm_response.data, lm_response.length); p += lm_response.length;
 395         }
 396         if (nt_response.length) {
 397                 memcpy(p,nt_response.data, nt_response.length); p += nt_response.length;
 398         }
 399         p += clistr_push(cli, p, user, -1, STR_TERMINATE);
 400
 401         /* Upper case here might help some NTLMv2 implementations */
 402         p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE|STR_UPPER);
 403         p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
 404         p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
 405         cli_setup_bcc(cli, p);
 406
 407         if (!cli_send_smb(cli) || !cli_receive_smb(cli)) {
 408                 result = cli_nt_error(cli);
 409                 goto end;
 410         }
 411
 412         /* show_msg(cli->inbuf); */
 413
 414         if (cli_is_error(cli)) {
 415                 result = cli_nt_error(cli);
 416                 goto end;
 417         }
 418
 419         /* use the returned vuid from now on */
 420         cli->vuid = SVAL(cli->inbuf,smb_uid);
 421
 422         p = smb_buf(cli->inbuf);
 423         p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
 424         p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), -1, STR_TERMINATE);
 425         p += clistr_pull(cli, cli->server_domain, p, sizeof(fstring), -1, STR_TERMINATE);
 426
 427         if (strstr(cli->server_type, "Samba")) {
 428                 cli->is_samba = True;
 429         }
 430
 431         fstrcpy(cli->user_name, user);
 432
 433         if (session_key.data) {
 434                 /* Have plaintext orginal */
 435                 cli_set_session_key(cli, session_key);
 436         }
 437
 438         result = NT_STATUS_OK;
 439 end:
 440         data_blob_free(&lm_response);
 441         data_blob_free(&nt_response);
 442         data_blob_free(&session_key);
 443         return result;
 444 }
 445
 446 /****************************************************************************
 447  Send a extended security session setup blob
 448 ****************************************************************************/
 449
 450 static BOOL cli_session_setup_blob_send(struct cli_state *cli, DATA_BLOB blob)
 451 {
 452         uint32 capabilities = cli_session_setup_capabilities(cli);
 453         char *p;
 454
 455         capabilities |= CAP_EXTENDED_SECURITY;
 456
 457         /* send a session setup command */
 458         memset(cli->outbuf,'\0',smb_size);
 459
 460         set_message(cli->outbuf,12,0,True);
 461         SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
 462
 463         cli_setup_packet(cli);
 464
 465         SCVAL(cli->outbuf,smb_vwv0,0xFF);
 466         SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
 467         SSVAL(cli->outbuf,smb_vwv3,2);
 468         SSVAL(cli->outbuf,smb_vwv4,1);
 469         SIVAL(cli->outbuf,smb_vwv5,0);
 470         SSVAL(cli->outbuf,smb_vwv7,blob.length);
 471         SIVAL(cli->outbuf,smb_vwv10,capabilities);
 472         p = smb_buf(cli->outbuf);
 473         memcpy(p, blob.data, blob.length);
 474         p += blob.length;
 475         p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
 476         p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
 477         cli_setup_bcc(cli, p);
 478         return cli_send_smb(cli);
 479 }
 480
 481 /****************************************************************************
 482  Send a extended security session setup blob, returning a reply blob.
 483 ****************************************************************************/
 484
 485 static DATA_BLOB cli_session_setup_blob_receive(struct cli_state *cli)
 486 {
 487         DATA_BLOB blob2 = data_blob(NULL, 0);
 488         char *p;
 489         size_t len;
 490
 491         if (!cli_receive_smb(cli))
 492                 return blob2;
 493
 494         show_msg(cli->inbuf);
 495
 496         if (cli_is_error(cli) && !NT_STATUS_EQUAL(cli_nt_error(cli),
 497                                                   NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 498                 return blob2;
 499         }
 500
 501         /* use the returned vuid from now on */
 502         cli->vuid = SVAL(cli->inbuf,smb_uid);
 503
 504         p = smb_buf(cli->inbuf);
 505
 506         blob2 = data_blob(p, SVAL(cli->inbuf, smb_vwv3));
 507
 508         p += blob2.length;
 509         p += clistr_pull(cli, cli->server_os, p, sizeof(fstring), -1, STR_TERMINATE);
 510
 511         /* w2k with kerberos doesn't properly null terminate this field */
 512         len = smb_buflen(cli->inbuf) - PTR_DIFF(p, smb_buf(cli->inbuf));
 513         p += clistr_pull(cli, cli->server_type, p, sizeof(fstring), len, 0);
 514
 515         return blob2;
 516 }
 517
 518 #ifdef HAVE_KRB5
 519
 520 /****************************************************************************
 521  Send a extended security session setup blob, returning a reply blob.
 522 ****************************************************************************/
 523
 524 static DATA_BLOB cli_session_setup_blob(struct cli_state *cli, DATA_BLOB blob)
 525 {
 526         DATA_BLOB blob2 = data_blob(NULL, 0);
 527         if (!cli_session_setup_blob_send(cli, blob)) {
 528                 return blob2;
 529         }
 530
 531         return cli_session_setup_blob_receive(cli);
 532 }
 533
 534 /****************************************************************************
 535  Use in-memory credentials cache
 536 ****************************************************************************/
 537
 538 static void use_in_memory_ccache(void) {
 539         setenv(KRB5_ENV_CCNAME, "MEMORY:cliconnect", 1);
 540 }
 541
 542 /****************************************************************************
 543  Do a spnego/kerberos encrypted session setup.
 544 ****************************************************************************/
 545
 546 static ADS_STATUS cli_session_setup_kerberos(struct cli_state *cli, const char *principal, const char *workgroup)
 547 {
 548         DATA_BLOB blob2, negTokenTarg;
 549         DATA_BLOB session_key_krb5;
 550         DATA_BLOB null_blob = data_blob(NULL, 0);
 551         int rc;
 552
 553         DEBUG(2,("Doing kerberos session setup\n"));
 554
 555         /* generate the encapsulated kerberos5 ticket */
 556         rc = spnego_gen_negTokenTarg(principal, 0, &negTokenTarg, &session_key_krb5, 0);
 557
 558         if (rc) {
 559                 DEBUG(1, ("spnego_gen_negTokenTarg failed: %s\n", error_message(rc)));
 560                 return ADS_ERROR_KRB5(rc);
 561         }
 562
 563 #if 0
 564         file_save("negTokenTarg.dat", negTokenTarg.data, negTokenTarg.length);
 565 #endif
 566
 567         cli_simple_set_signing(cli, session_key_krb5, null_blob);
 568
 569         blob2 = cli_session_setup_blob(cli, negTokenTarg);
 570
 571         /* we don't need this blob for kerberos */
 572         data_blob_free(&blob2);
 573
 574         cli_set_session_key(cli, session_key_krb5);
 575
 576         data_blob_free(&negTokenTarg);
 577         data_blob_free(&session_key_krb5);
 578
 579         if (cli_is_error(cli)) {
 580                 if (NT_STATUS_IS_OK(cli_nt_error(cli))) {
 581                         return ADS_ERROR_NT(NT_STATUS_UNSUCCESSFUL);
 582                 }
 583         }
 584         return ADS_ERROR_NT(cli_nt_error(cli));
 585 }
 586 #endif  /* HAVE_KRB5 */
 587
 588
 589 /****************************************************************************
 590  Do a spnego/NTLMSSP encrypted session setup.
 591 ****************************************************************************/
 592
 593 static NTSTATUS cli_session_setup_ntlmssp(struct cli_state *cli, const char *user,
 594                                           const char *pass, const char *domain)
 595 {
 596         struct ntlmssp_state *ntlmssp_state;
 597         NTSTATUS nt_status;
 598         int turn = 1;
 599         DATA_BLOB msg1;
 600         DATA_BLOB blob = data_blob(NULL, 0);
 601         DATA_BLOB blob_in = data_blob(NULL, 0);
 602         DATA_BLOB blob_out = data_blob(NULL, 0);
 603
 604         cli_temp_set_signing(cli);
 605
 606         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_client_start(&ntlmssp_state))) {
 607                 return nt_status;
 608         }
 609         ntlmssp_want_feature(ntlmssp_state, NTLMSSP_FEATURE_SESSION_KEY);
 610
 611         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_username(ntlmssp_state, user))) {
 612                 return nt_status;
 613         }
 614         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_domain(ntlmssp_state, domain))) {
 615                 return nt_status;
 616         }
 617         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_password(ntlmssp_state, pass))) {
 618                 return nt_status;
 619         }
 620
 621         do {
 622                 nt_status = ntlmssp_update(ntlmssp_state,
 623                                                   blob_in, &blob_out);
 624                 data_blob_free(&blob_in);
 625                 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED) || NT_STATUS_IS_OK(nt_status)) {
 626                         if (turn == 1) {
 627                                 /* and wrap it in a SPNEGO wrapper */
 628                                 msg1 = gen_negTokenInit(OID_NTLMSSP, blob_out);
 629                         } else {
 630                                 /* wrap it in SPNEGO */
 631                                 msg1 = spnego_gen_auth(blob_out);
 632                         }
 633
 634                         /* now send that blob on its way */
 635                         if (!cli_session_setup_blob_send(cli, msg1)) {
 636                                 DEBUG(3, ("Failed to send NTLMSSP/SPNEGO blob to server!\n"));
 637                                 nt_status = NT_STATUS_UNSUCCESSFUL;
 638                         } else {
 639                                 data_blob_free(&msg1);
 640
 641                                 blob = cli_session_setup_blob_receive(cli);
 642
 643                                 nt_status = cli_nt_error(cli);
 644                                 if (cli_is_error(cli) && NT_STATUS_IS_OK(nt_status)) {
 645                                         if (cli->smb_rw_error == READ_BAD_SIG) {
 646                                                 nt_status = NT_STATUS_ACCESS_DENIED;
 647                                         } else {
 648                                                 nt_status = NT_STATUS_UNSUCCESSFUL;
 649                                         }
 650                                 }
 651                         }
 652                 }
 653
 654                 if (!blob.length) {
 655                         if (NT_STATUS_IS_OK(nt_status)) {
 656                                 nt_status = NT_STATUS_UNSUCCESSFUL;
 657                         }
 658                 } else if ((turn == 1) &&
 659                            NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 660                         DATA_BLOB tmp_blob = data_blob(NULL, 0);
 661                         /* the server might give us back two challenges */
 662                         if (!spnego_parse_challenge(blob, &blob_in,
 663                                                     &tmp_blob)) {
 664                                 DEBUG(3,("Failed to parse challenges\n"));
 665                                 nt_status = NT_STATUS_INVALID_PARAMETER;
 666                         }
 667                         data_blob_free(&tmp_blob);
 668                 } else {
 669                         if (!spnego_parse_auth_response(blob, nt_status,
 670                                                         &blob_in)) {
 671                                 DEBUG(3,("Failed to parse auth response\n"));
 672                                 if (NT_STATUS_IS_OK(nt_status)
 673                                     || NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED))
 674                                         nt_status = NT_STATUS_INVALID_PARAMETER;
 675                         }
 676                 }
 677                 data_blob_free(&blob);
 678                 data_blob_free(&blob_out);
 679                 turn++;
 680         } while (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED));
 681
 682         if (NT_STATUS_IS_OK(nt_status)) {
 683
 684                 DATA_BLOB key = data_blob(ntlmssp_state->session_key.data,
 685                                           ntlmssp_state->session_key.length);
 686                 DATA_BLOB null_blob = data_blob(NULL, 0);
 687                 BOOL res;
 688
 689                 fstrcpy(cli->server_domain, ntlmssp_state->server_domain);
 690                 cli_set_session_key(cli, ntlmssp_state->session_key);
 691
 692                 res = cli_simple_set_signing(cli, key, null_blob);
 693
 694                 data_blob_free(&key);
 695
 696                 if (res) {
 697
 698                         /* 'resign' the last message, so we get the right sequence numbers
 699                            for checking the first reply from the server */
 700                         cli_calculate_sign_mac(cli);
 701
 702                         if (!cli_check_sign_mac(cli)) {
 703                                 nt_status = NT_STATUS_ACCESS_DENIED;
 704                         }
 705                 }
 706         }
 707
 708         /* we have a reference conter on ntlmssp_state, if we are signing
 709            then the state will be kept by the signing engine */
 710
 711         ntlmssp_end(&ntlmssp_state);
 712
 713         return nt_status;
 714 }
 715
 716 /****************************************************************************
 717  Do a spnego encrypted session setup.
 718 ****************************************************************************/
 719
 720 ADS_STATUS cli_session_setup_spnego(struct cli_state *cli, const char *user,
 721                               const char *pass, const char *domain)
 722 {
 723         char *principal;
 724         char *OIDs[ASN1_MAX_OIDS];
 725         int i;
 726 #ifdef HAVE_KRB5
 727         BOOL got_kerberos_mechanism = False;
 728 #endif
 729         DATA_BLOB blob;
 730
 731         DEBUG(3,("Doing spnego session setup (blob length=%lu)\n", (unsigned long)cli->secblob.length));
 732
 733         /* the server might not even do spnego */
 734         if (cli->secblob.length <= 16) {
 735                 DEBUG(3,("server didn't supply a full spnego negprot\n"));
 736                 goto ntlmssp;
 737         }
 738
 739 #if 0
 740         file_save("negprot.dat", cli->secblob.data, cli->secblob.length);
 741 #endif
 742
 743         /* there is 16 bytes of GUID before the real spnego packet starts */
 744         blob = data_blob(cli->secblob.data+16, cli->secblob.length-16);
 745
 746         /* the server sent us the first part of the SPNEGO exchange in the negprot
 747            reply */
 748         if (!spnego_parse_negTokenInit(blob, OIDs, &principal)) {
 749                 data_blob_free(&blob);
 750                 return ADS_ERROR_NT(NT_STATUS_INVALID_PARAMETER);
 751         }
 752         data_blob_free(&blob);
 753
 754         /* make sure the server understands kerberos */
 755         for (i=0;OIDs[i];i++) {
 756                 DEBUG(3,("got OID=%s\n", OIDs[i]));
 757 #ifdef HAVE_KRB5
 758                 if (strcmp(OIDs[i], OID_KERBEROS5_OLD) == 0 ||
 759                     strcmp(OIDs[i], OID_KERBEROS5) == 0) {
 760                         got_kerberos_mechanism = True;
 761                 }
 762 #endif
 763                 free(OIDs[i]);
 764         }
 765         DEBUG(3,("got principal=%s\n", principal));
 766
 767         fstrcpy(cli->user_name, user);
 768
 769 #ifdef HAVE_KRB5
 770         /* If password is set we reauthenticate to kerberos server
 771          * and do not store results */
 772
 773         if (got_kerberos_mechanism && cli->use_kerberos) {
 774                 ADS_STATUS rc;
 775
 776                 if (pass && *pass) {
 777                         int ret;
 778
 779                         use_in_memory_ccache();
 780                         ret = kerberos_kinit_password(user, pass, 0 /* no time correction for now */, NULL);
 781
 782                         if (ret){
 783                                 SAFE_FREE(principal);
 784                                 DEBUG(0, ("Kinit failed: %s\n", error_message(ret)));
 785                                 if (cli->fallback_after_kerberos)
 786                                         goto ntlmssp;
 787                                 return ADS_ERROR_KRB5(ret);
 788                         }
 789                 }
 790
 791                 rc = cli_session_setup_kerberos(cli, principal, domain);
 792                 if (ADS_ERR_OK(rc) || !cli->fallback_after_kerberos) {
 793                         SAFE_FREE(principal);
 794                         return rc;
 795                 }
 796         }
 797 #endif
 798
 799         SAFE_FREE(principal);
 800
 801 ntlmssp:
 802
 803         return ADS_ERROR_NT(cli_session_setup_ntlmssp(cli, user, pass, domain));
 804 }
 805
 806 /****************************************************************************
 807  Send a session setup. The username and workgroup is in UNIX character
 808  format and must be converted to DOS codepage format before sending. If the
 809  password is in plaintext, the same should be done.
 810 ****************************************************************************/
 811
 812 NTSTATUS cli_session_setup(struct cli_state *cli,
 813                            const char *user,
 814                            const char *pass, int passlen,
 815                            const char *ntpass, int ntpasslen,
 816                            const char *workgroup)
 817 {
 818         char *p;
 819         fstring user2;
 820
 821         /* allow for workgroups as part of the username */
 822         fstrcpy(user2, user);
 823         if ((p=strchr_m(user2,'\\')) || (p=strchr_m(user2,'/')) ||
 824             (p=strchr_m(user2,*lp_winbind_separator()))) {
 825                 *p = 0;
 826                 user = p+1;
 827                 workgroup = user2;
 828         }
 829
 830         if (cli->protocol < PROTOCOL_LANMAN1) {
 831                 return NT_STATUS_OK;
 832         }
 833
 834         /* now work out what sort of session setup we are going to
 835            do. I have split this into separate functions to make the
 836            flow a bit easier to understand (tridge) */
 837
 838         /* if its an older server then we have to use the older request format */
 839
 840         if (cli->protocol < PROTOCOL_NT1) {
 841                 if (!lp_client_lanman_auth() && passlen != 24 && (*pass)) {
 842                         DEBUG(1, ("Server requested LM password but 'client lanman auth'"
 843                                   " is disabled\n"));
 844                         return NT_STATUS_ACCESS_DENIED;
 845                 }
 846
 847                 if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0 &&
 848                     !lp_client_plaintext_auth() && (*pass)) {
 849                         DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
 850                                   " is disabled\n"));
 851                         return NT_STATUS_ACCESS_DENIED;
 852                 }
 853
 854                 return cli_session_setup_lanman2(cli, user, pass, passlen,
 855                                                  workgroup);
 856         }
 857
 858         /* if no user is supplied then we have to do an anonymous connection.
 859            passwords are ignored */
 860
 861         if (!user || !*user)
 862                 return cli_session_setup_guest(cli);
 863
 864         /* if the server is share level then send a plaintext null
 865            password at this point. The password is sent in the tree
 866            connect */
 867
 868         if ((cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) == 0)
 869                 return cli_session_setup_plaintext(cli, user, "", workgroup);
 870
 871         /* if the server doesn't support encryption then we have to use
 872            plaintext. The second password is ignored */
 873
 874         if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0) {
 875                 if (!lp_client_plaintext_auth() && (*pass)) {
 876                         DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
 877                                   " is disabled\n"));
 878                         return NT_STATUS_ACCESS_DENIED;
 879                 }
 880                 return cli_session_setup_plaintext(cli, user, pass, workgroup);
 881         }
 882
 883         /* if the server supports extended security then use SPNEGO */
 884
 885         if (cli->capabilities & CAP_EXTENDED_SECURITY) {
 886                 ADS_STATUS status = cli_session_setup_spnego(cli, user, pass, workgroup);
 887                 if (!ADS_ERR_OK(status)) {
 888                         DEBUG(3, ("SPNEGO login failed: %s\n", ads_errstr(status)));
 889                         return ads_ntstatus(status);
 890                 }
 891         } else {
 892                 NTSTATUS status;
 893
 894                 /* otherwise do a NT1 style session setup */
 895                 status = cli_session_setup_nt1(cli, user, pass, passlen,
 896                                                ntpass, ntpasslen, workgroup);
 897                 if (!NT_STATUS_IS_OK(status)) {
 898                         DEBUG(3,("cli_session_setup: NT1 session setup "
 899                                  "failed: %s\n", nt_errstr(status)));
 900                         return status;
 901                 }
 902         }
 903
 904         if (strstr(cli->server_type, "Samba")) {
 905                 cli->is_samba = True;
 906         }
 907
 908         return NT_STATUS_OK;
 909
 910 }
 911
 912 /****************************************************************************
 913  Send a uloggoff.
 914 *****************************************************************************/
 915
 916 BOOL cli_ulogoff(struct cli_state *cli)
 917 {
 918         memset(cli->outbuf,'\0',smb_size);
 919         set_message(cli->outbuf,2,0,True);
 920         SCVAL(cli->outbuf,smb_com,SMBulogoffX);
 921         cli_setup_packet(cli);
 922         SSVAL(cli->outbuf,smb_vwv0,0xFF);
 923         SSVAL(cli->outbuf,smb_vwv2,0);  /* no additional info */
 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
 933         cli->cnum = -1;
 934         return True;
 935 }
 936
 937 /****************************************************************************
 938  Send a tconX.
 939 ****************************************************************************/
 940
 941 BOOL cli_send_tconX(struct cli_state *cli,
 942                     const char *share, const char *dev, const char *pass, int passlen)
 943 {
 944         fstring fullshare, pword;
 945         char *p;
 946         memset(cli->outbuf,'\0',smb_size);
 947         memset(cli->inbuf,'\0',smb_size);
 948
 949         fstrcpy(cli->share, share);
 950
 951         /* in user level security don't send a password now */
 952         if (cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) {
 953                 passlen = 1;
 954                 pass = "";
 955         } else if (!pass) {
 956                 DEBUG(1, ("Server not using user level security and no password supplied.\n"));
 957                 return False;
 958         }
 959
 960         if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) &&
 961             *pass && passlen != 24) {
 962                 if (!lp_client_lanman_auth()) {
 963                         DEBUG(1, ("Server requested LANMAN password (share-level security) but 'client use lanman auth'"
 964                                   " is disabled\n"));
 965                         return False;
 966                 }
 967
 968                 /*
 969                  * Non-encrypted passwords - convert to DOS codepage before encryption.
 970                  */
 971                 passlen = 24;
 972                 SMBencrypt(pass,cli->secblob.data,(uchar *)pword);
 973         } else {
 974                 if((cli->sec_mode & (NEGOTIATE_SECURITY_USER_LEVEL|NEGOTIATE_SECURITY_CHALLENGE_RESPONSE)) == 0) {
 975                         if (!lp_client_plaintext_auth() && (*pass)) {
 976                                 DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
 977                                           " is disabled\n"));
 978                                 return False;
 979                         }
 980
 981                         /*
 982                          * Non-encrypted passwords - convert to DOS codepage before using.
 983                          */
 984                         passlen = clistr_push(cli, pword, pass, sizeof(pword), STR_TERMINATE);
 985
 986                 } else {
 987                         if (passlen) {
 988                                 memcpy(pword, pass, passlen);
 989                         }
 990                 }
 991         }
 992
 993         slprintf(fullshare, sizeof(fullshare)-1,
 994                  "\\\\%s\\%s", cli->desthost, share);
 995
 996         set_message(cli->outbuf,4, 0, True);
 997         SCVAL(cli->outbuf,smb_com,SMBtconX);
 998         cli_setup_packet(cli);
 999
1000         SSVAL(cli->outbuf,smb_vwv0,0xFF);
1001         SSVAL(cli->outbuf,smb_vwv3,passlen);
1002
1003         p = smb_buf(cli->outbuf);
1004         if (passlen) {
1005                 memcpy(p,pword,passlen);
1006         }
1007         p += passlen;
1008         p += clistr_push(cli, p, fullshare, -1, STR_TERMINATE |STR_UPPER);
1009         p += clistr_push(cli, p, dev, -1, STR_TERMINATE |STR_UPPER | STR_ASCII);
1010
1011         cli_setup_bcc(cli, p);
1012
1013         cli_send_smb(cli);
1014         if (!cli_receive_smb(cli))
1015                 return False;
1016
1017         if (cli_is_error(cli))
1018                 return False;
1019
1020         clistr_pull(cli, cli->dev, smb_buf(cli->inbuf), sizeof(fstring), -1, STR_TERMINATE|STR_ASCII);
1021
1022         if (cli->protocol >= PROTOCOL_NT1 &&
1023             smb_buflen(cli->inbuf) == 3) {
1024                 /* almost certainly win95 - enable bug fixes */
1025                 cli->win95 = True;
1026         }
1027
1028         /* Make sure that we have the optional support 16-bit field.  WCT > 2 */
1029         /* Avoids issues when connecting to Win9x boxes sharing files */
1030
1031         cli->dfsroot = False;
1032         if ( (CVAL(cli->inbuf, smb_wct))>2 && cli->protocol >= PROTOCOL_LANMAN2 )
1033                 cli->dfsroot = (SVAL( cli->inbuf, smb_vwv2 ) & SMB_SHARE_IN_DFS) ? True : False;
1034
1035         cli->cnum = SVAL(cli->inbuf,smb_tid);
1036         return True;
1037 }
1038
1039 /****************************************************************************
1040  Send a tree disconnect.
1041 ****************************************************************************/
1042
1043 BOOL cli_tdis(struct cli_state *cli)
1044 {
1045         memset(cli->outbuf,'\0',smb_size);
1046         set_message(cli->outbuf,0,0,True);
1047         SCVAL(cli->outbuf,smb_com,SMBtdis);
1048         SSVAL(cli->outbuf,smb_tid,cli->cnum);
1049         cli_setup_packet(cli);
1050
1051         cli_send_smb(cli);
1052         if (!cli_receive_smb(cli))
1053                 return False;
1054
1055         if (cli_is_error(cli)) {
1056                 return False;
1057         }
1058
1059         cli->cnum = -1;
1060         return True;
1061 }
1062
1063 /****************************************************************************
1064  Send a negprot command.
1065 ****************************************************************************/
1066
1067 void cli_negprot_send(struct cli_state *cli)
1068 {
1069         char *p;
1070         int numprots;
1071
1072         if (cli->protocol < PROTOCOL_NT1)
1073                 cli->use_spnego = False;
1074
1075         memset(cli->outbuf,'\0',smb_size);
1076
1077         /* setup the protocol strings */
1078         set_message(cli->outbuf,0,0,True);
1079
1080         p = smb_buf(cli->outbuf);
1081         for (numprots=0;
1082              prots[numprots].name && prots[numprots].prot<=cli->protocol;
1083              numprots++) {
1084                 *p++ = 2;
1085                 p += clistr_push(cli, p, prots[numprots].name, -1, STR_TERMINATE);
1086         }
1087
1088         SCVAL(cli->outbuf,smb_com,SMBnegprot);
1089         cli_setup_bcc(cli, p);
1090         cli_setup_packet(cli);
1091
1092         SCVAL(smb_buf(cli->outbuf),0,2);
1093
1094         cli_send_smb(cli);
1095 }
1096
1097 /****************************************************************************
1098  Send a negprot command.
1099 ****************************************************************************/
1100
1101 BOOL cli_negprot(struct cli_state *cli)
1102 {
1103         char *p;
1104         int numprots;
1105         int plength;
1106
1107         if (cli->protocol < PROTOCOL_NT1)
1108                 cli->use_spnego = False;
1109
1110         memset(cli->outbuf,'\0',smb_size);
1111
1112         /* setup the protocol strings */
1113         for (plength=0,numprots=0;
1114              prots[numprots].name && prots[numprots].prot<=cli->protocol;
1115              numprots++)
1116                 plength += strlen(prots[numprots].name)+2;
1117
1118         set_message(cli->outbuf,0,plength,True);
1119
1120         p = smb_buf(cli->outbuf);
1121         for (numprots=0;
1122              prots[numprots].name && prots[numprots].prot<=cli->protocol;
1123              numprots++) {
1124                 *p++ = 2;
1125                 p += clistr_push(cli, p, prots[numprots].name, -1, STR_TERMINATE);
1126         }
1127
1128         SCVAL(cli->outbuf,smb_com,SMBnegprot);
1129         cli_setup_packet(cli);
1130
1131         SCVAL(smb_buf(cli->outbuf),0,2);
1132
1133         cli_send_smb(cli);
1134         if (!cli_receive_smb(cli))
1135                 return False;
1136
1137         show_msg(cli->inbuf);
1138
1139         if (cli_is_error(cli) ||
1140             ((int)SVAL(cli->inbuf,smb_vwv0) >= numprots)) {
1141                 return(False);
1142         }
1143
1144         cli->protocol = prots[SVAL(cli->inbuf,smb_vwv0)].prot;
1145
1146         if ((cli->protocol < PROTOCOL_NT1) && cli->sign_info.mandatory_signing) {
1147                 DEBUG(0,("cli_negprot: SMB signing is mandatory and the selected protocol level doesn't support it.\n"));
1148                 return False;
1149         }
1150
1151         if (cli->protocol >= PROTOCOL_NT1) {
1152                 /* NT protocol */
1153                 cli->sec_mode = CVAL(cli->inbuf,smb_vwv1);
1154                 cli->max_mux = SVAL(cli->inbuf, smb_vwv1+1);
1155                 cli->max_xmit = IVAL(cli->inbuf,smb_vwv3+1);
1156                 cli->sesskey = IVAL(cli->inbuf,smb_vwv7+1);
1157                 cli->serverzone = SVALS(cli->inbuf,smb_vwv15+1);
1158                 cli->serverzone *= 60;
1159                 /* this time arrives in real GMT */
1160                 cli->servertime = interpret_long_date(cli->inbuf+smb_vwv11+1);
1161                 cli->secblob = data_blob(smb_buf(cli->inbuf),smb_buflen(cli->inbuf));
1162                 cli->capabilities = IVAL(cli->inbuf,smb_vwv9+1);
1163                 if (cli->capabilities & CAP_RAW_MODE) {
1164                         cli->readbraw_supported = True;
1165                         cli->writebraw_supported = True;
1166                 }
1167                 /* work out if they sent us a workgroup */
1168                 if (!(cli->capabilities & CAP_EXTENDED_SECURITY) &&
1169                     smb_buflen(cli->inbuf) > 8) {
1170                         clistr_pull(cli, cli->server_domain,
1171                                     smb_buf(cli->inbuf)+8, sizeof(cli->server_domain),
1172                                     smb_buflen(cli->inbuf)-8, STR_UNICODE|STR_NOALIGN);
1173                 }
1174
1175                 /*
1176                  * As signing is slow we only turn it on if either the client or
1177                  * the server require it. JRA.
1178                  */
1179
1180                 if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_REQUIRED) {
1181                         /* Fail if server says signing is mandatory and we don't want to support it. */
1182                         if (!cli->sign_info.allow_smb_signing) {
1183                                 DEBUG(0,("cli_negprot: SMB signing is mandatory and we have disabled it.\n"));
1184                                 return False;
1185                         }
1186                         cli->sign_info.negotiated_smb_signing = True;
1187                         cli->sign_info.mandatory_signing = True;
1188                 } else if (cli->sign_info.mandatory_signing && cli->sign_info.allow_smb_signing) {
1189                         /* Fail if client says signing is mandatory and the server doesn't support it. */
1190                         if (!(cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED)) {
1191                                 DEBUG(1,("cli_negprot: SMB signing is mandatory and the server doesn't support it.\n"));
1192                                 return False;
1193                         }
1194                         cli->sign_info.negotiated_smb_signing = True;
1195                         cli->sign_info.mandatory_signing = True;
1196                 } else if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED) {
1197                         cli->sign_info.negotiated_smb_signing = True;
1198                 }
1199
1200                 if (cli->capabilities & (CAP_LARGE_READX|CAP_LARGE_WRITEX)) {
1201                         SAFE_FREE(cli->outbuf);
1202                         SAFE_FREE(cli->inbuf);
1203                         cli->outbuf = (char *)SMB_MALLOC(CLI_SAMBA_MAX_LARGE_READX_SIZE+SAFETY_MARGIN);
1204                         cli->inbuf = (char *)SMB_MALLOC(CLI_SAMBA_MAX_LARGE_READX_SIZE+SAFETY_MARGIN);
1205                         cli->bufsize = CLI_SAMBA_MAX_LARGE_READX_SIZE;
1206                 }
1207
1208         } else if (cli->protocol >= PROTOCOL_LANMAN1) {
1209                 cli->use_spnego = False;
1210                 cli->sec_mode = SVAL(cli->inbuf,smb_vwv1);
1211                 cli->max_xmit = SVAL(cli->inbuf,smb_vwv2);
1212                 cli->max_mux = SVAL(cli->inbuf, smb_vwv3);
1213                 cli->sesskey = IVAL(cli->inbuf,smb_vwv6);
1214                 cli->serverzone = SVALS(cli->inbuf,smb_vwv10);
1215                 cli->serverzone *= 60;
1216                 /* this time is converted to GMT by make_unix_date */
1217                 cli->servertime = cli_make_unix_date(cli,cli->inbuf+smb_vwv8);
1218                 cli->readbraw_supported = ((SVAL(cli->inbuf,smb_vwv5) & 0x1) != 0);
1219                 cli->writebraw_supported = ((SVAL(cli->inbuf,smb_vwv5) & 0x2) != 0);
1220                 cli->secblob = data_blob(smb_buf(cli->inbuf),smb_buflen(cli->inbuf));
1221         } else {
1222                 /* the old core protocol */
1223                 cli->use_spnego = False;
1224                 cli->sec_mode = 0;
1225                 cli->serverzone = get_time_zone(time(NULL));
1226         }
1227
1228         cli->max_xmit = MIN(cli->max_xmit, CLI_BUFFER_SIZE);
1229
1230         /* a way to force ascii SMB */
1231         if (getenv("CLI_FORCE_ASCII"))
1232                 cli->capabilities &= ~CAP_UNICODE;
1233
1234         return True;
1235 }
1236
1237 /****************************************************************************
1238  Send a session request. See rfc1002.txt 4.3 and 4.3.2.
1239 ****************************************************************************/
1240
1241 BOOL cli_session_request(struct cli_state *cli,
1242                          struct nmb_name *calling, struct nmb_name *called)
1243 {
1244         char *p;
1245         int len = 4;
1246
1247         memcpy(&(cli->calling), calling, sizeof(*calling));
1248         memcpy(&(cli->called ), called , sizeof(*called ));
1249
1250         /* put in the destination name */
1251         p = cli->outbuf+len;
1252         name_mangle(cli->called .name, p, cli->called .name_type);
1253         len += name_len(p);
1254
1255         /* and my name */
1256         p = cli->outbuf+len;
1257         name_mangle(cli->calling.name, p, cli->calling.name_type);
1258         len += name_len(p);
1259
1260         /* 445 doesn't have session request */
1261         if (cli->port == 445)
1262                 return True;
1263
1264         /* send a session request (RFC 1002) */
1265         /* setup the packet length
1266          * Remove four bytes from the length count, since the length
1267          * field in the NBT Session Service header counts the number
1268          * of bytes which follow.  The cli_send_smb() function knows
1269          * about this and accounts for those four bytes.
1270          * CRH.
1271          */
1272         len -= 4;
1273         _smb_setlen(cli->outbuf,len);
1274         SCVAL(cli->outbuf,0,0x81);
1275
1276         cli_send_smb(cli);
1277         DEBUG(5,("Sent session request\n"));
1278
1279         if (!cli_receive_smb(cli))
1280                 return False;
1281
1282         if (CVAL(cli->inbuf,0) == 0x84) {
1283                 /* C. Hoch  9/14/95 Start */
1284                 /* For information, here is the response structure.
1285                  * We do the byte-twiddling to for portability.
1286                 struct RetargetResponse{
1287                 unsigned char type;
1288                 unsigned char flags;
1289                 int16 length;
1290                 int32 ip_addr;
1291                 int16 port;
1292                 };
1293                 */
1294                 int port = (CVAL(cli->inbuf,8)<<8)+CVAL(cli->inbuf,9);
1295                 /* SESSION RETARGET */
1296                 putip((char *)&cli->dest_ip,cli->inbuf+4);
1297
1298                 cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ip, port, LONG_CONNECT_TIMEOUT);
1299                 if (cli->fd == -1)
1300                         return False;
1301
1302                 DEBUG(3,("Retargeted\n"));
1303
1304                 set_socket_options(cli->fd,user_socket_options);
1305
1306                 /* Try again */
1307                 {
1308                         static int depth;
1309                         BOOL ret;
1310                         if (depth > 4) {
1311                                 DEBUG(0,("Retarget recursion - failing\n"));
1312                                 return False;
1313                         }
1314                         depth++;
1315                         ret = cli_session_request(cli, calling, called);
1316                         depth--;
1317                         return ret;
1318                 }
1319         } /* C. Hoch 9/14/95 End */
1320
1321         if (CVAL(cli->inbuf,0) != 0x82) {
1322                 /* This is the wrong place to put the error... JRA. */
1323                 cli->rap_error = CVAL(cli->inbuf,4);
1324                 return False;
1325         }
1326         return(True);
1327 }
1328
1329 /****************************************************************************
1330  Open the client sockets.
1331 ****************************************************************************/
1332
1333 BOOL cli_connect(struct cli_state *cli, const char *host, struct in_addr *ip)
1334 {
1335         int name_type = 0x20;
1336         char *p;
1337
1338         /* reasonable default hostname */
1339         if (!host) host = "*SMBSERVER";
1340
1341         fstrcpy(cli->desthost, host);
1342
1343         /* allow hostnames of the form NAME#xx and do a netbios lookup */
1344         if ((p = strchr(cli->desthost, '#'))) {
1345                 name_type = strtol(p+1, NULL, 16);
1346                 *p = 0;
1347         }
1348
1349         if (!ip || is_zero_ip(*ip)) {
1350                 if (!resolve_name(cli->desthost, &cli->dest_ip, name_type)) {
1351                         return False;
1352                 }
1353                 if (ip) *ip = cli->dest_ip;
1354         } else {
1355                 cli->dest_ip = *ip;
1356         }
1357
1358         if (getenv("LIBSMB_PROG")) {
1359                 cli->fd = sock_exec(getenv("LIBSMB_PROG"));
1360         } else {
1361                 /* try 445 first, then 139 */
1362                 int port = cli->port?cli->port:445;
1363                 cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ip,
1364                                           port, cli->timeout);
1365                 if (cli->fd == -1 && cli->port == 0) {
1366                         port = 139;
1367                         cli->fd = open_socket_out(SOCK_STREAM, &cli->dest_ip,
1368                                                   port, cli->timeout);
1369                 }
1370                 if (cli->fd != -1)
1371                         cli->port = port;
1372         }
1373         if (cli->fd == -1) {
1374                 DEBUG(1,("Error connecting to %s (%s)\n",
1375                          ip?inet_ntoa(*ip):host,strerror(errno)));
1376                 return False;
1377         }
1378
1379         set_socket_options(cli->fd,user_socket_options);
1380
1381         return True;
1382 }
1383
1384 /**
1385    establishes a connection to after the negprot.
1386    @param output_cli A fully initialised cli structure, non-null only on success
1387    @param dest_host The netbios name of the remote host
1388    @param dest_ip (optional) The the destination IP, NULL for name based lookup
1389    @param port (optional) The destination port (0 for default)
1390    @param retry BOOL. Did this connection fail with a retryable error ?
1391
1392 */
1393 NTSTATUS cli_start_connection(struct cli_state **output_cli,
1394                               const char *my_name,
1395                               const char *dest_host,
1396                               struct in_addr *dest_ip, int port,
1397                               int signing_state, int flags,
1398                               BOOL *retry)
1399 {
1400         NTSTATUS nt_status;
1401         struct nmb_name calling;
1402         struct nmb_name called;
1403         struct cli_state *cli;
1404         struct in_addr ip;
1405
1406         if (retry)
1407                 *retry = False;
1408
1409         if (!my_name)
1410                 my_name = global_myname();
1411
1412         if (!(cli = cli_initialise())) {
1413                 return NT_STATUS_NO_MEMORY;
1414         }
1415
1416         make_nmb_name(&calling, my_name, 0x0);
1417         make_nmb_name(&called , dest_host, 0x20);
1418
1419         if (cli_set_port(cli, port) != port) {
1420                 cli_shutdown(cli);
1421                 return NT_STATUS_UNSUCCESSFUL;
1422         }
1423
1424         cli_set_timeout(cli, 10000); /* 10 seconds. */
1425
1426         if (dest_ip)
1427                 ip = *dest_ip;
1428         else
1429                 ZERO_STRUCT(ip);
1430
1431 again:
1432
1433         DEBUG(3,("Connecting to host=%s\n", dest_host));
1434
1435         if (!cli_connect(cli, dest_host, &ip)) {
1436                 DEBUG(1,("cli_start_connection: failed to connect to %s (%s)\n",
1437                          nmb_namestr(&called), inet_ntoa(ip)));
1438                 cli_shutdown(cli);
1439                 if (is_zero_ip(ip)) {
1440                         return NT_STATUS_BAD_NETWORK_NAME;
1441                 } else {
1442                         return NT_STATUS_CONNECTION_REFUSED;
1443                 }
1444         }
1445
1446         if (retry)
1447                 *retry = True;
1448
1449         if (!cli_session_request(cli, &calling, &called)) {
1450                 char *p;
1451                 DEBUG(1,("session request to %s failed (%s)\n",
1452                          called.name, cli_errstr(cli)));
1453                 if ((p=strchr(called.name, '.')) && !is_ipaddress(called.name)) {
1454                         *p = 0;
1455                         goto again;
1456                 }
1457                 if (strcmp(called.name, "*SMBSERVER")) {
1458                         make_nmb_name(&called , "*SMBSERVER", 0x20);
1459                         goto again;
1460                 }
1461                 return NT_STATUS_BAD_NETWORK_NAME;
1462         }
1463
1464         cli_setup_signing_state(cli, signing_state);
1465
1466         if (flags & CLI_FULL_CONNECTION_DONT_SPNEGO)
1467                 cli->use_spnego = False;
1468         else if (flags & CLI_FULL_CONNECTION_USE_KERBEROS)
1469                 cli->use_kerberos = True;
1470
1471         if (!cli_negprot(cli)) {
1472                 DEBUG(1,("failed negprot\n"));
1473                 nt_status = cli_nt_error(cli);
1474                 if (NT_STATUS_IS_OK(nt_status)) {
1475                         nt_status = NT_STATUS_UNSUCCESSFUL;
1476                 }
1477                 cli_shutdown(cli);
1478                 return nt_status;
1479         }
1480
1481         *output_cli = cli;
1482         return NT_STATUS_OK;
1483 }
1484
1485
1486 /**
1487    establishes a connection right up to doing tconX, password specified.
1488    @param output_cli A fully initialised cli structure, non-null only on success
1489    @param dest_host The netbios name of the remote host
1490    @param dest_ip (optional) The the destination IP, NULL for name based lookup
1491    @param port (optional) The destination port (0 for default)
1492    @param service (optional) The share to make the connection to.  Should be 'unqualified' in any way.
1493    @param service_type The 'type' of serivice.
1494    @param user Username, unix string
1495    @param domain User's domain
1496    @param password User's password, unencrypted unix string.
1497    @param retry BOOL. Did this connection fail with a retryable error ?
1498 */
1499
1500 NTSTATUS cli_full_connection(struct cli_state **output_cli,
1501                              const char *my_name,
1502                              const char *dest_host,
1503                              struct in_addr *dest_ip, int port,
1504                              const char *service, const char *service_type,
1505                              const char *user, const char *domain,
1506                              const char *password, int flags,
1507                              int signing_state,
1508                              BOOL *retry)
1509 {
1510         NTSTATUS nt_status;
1511         struct cli_state *cli = NULL;
1512         int pw_len = password ? strlen(password)+1 : 0;
1513
1514         *output_cli = NULL;
1515
1516         if (password == NULL) {
1517                 password = "";
1518         }
1519
1520         nt_status = cli_start_connection(&cli, my_name, dest_host,
1521                                          dest_ip, port, signing_state, flags, retry);
1522
1523         if (!NT_STATUS_IS_OK(nt_status)) {
1524                 return nt_status;
1525         }
1526
1527         nt_status = cli_session_setup(cli, user, password, pw_len, password,
1528                                       pw_len, domain);
1529         if (!NT_STATUS_IS_OK(nt_status)) {
1530
1531                 if (!(flags & CLI_FULL_CONNECTION_ANNONYMOUS_FALLBACK)) {
1532                         DEBUG(1,("failed session setup with %s\n",
1533                                  nt_errstr(nt_status)));
1534                         cli_shutdown(cli);
1535                         return nt_status;
1536                 }
1537
1538                 nt_status = cli_session_setup(cli, "", "", 0, "", 0, domain);
1539                 if (!NT_STATUS_IS_OK(nt_status)) {
1540                         DEBUG(1,("anonymous failed session setup with %s\n",
1541                                  nt_errstr(nt_status)));
1542                         cli_shutdown(cli);
1543                         return nt_status;
1544                 }
1545         }
1546
1547         if (service) {
1548                 if (!cli_send_tconX(cli, service, service_type, password, pw_len)) {
1549                         nt_status = cli_nt_error(cli);
1550                         DEBUG(1,("failed tcon_X with %s\n", nt_errstr(nt_status)));
1551                         cli_shutdown(cli);
1552                         if (NT_STATUS_IS_OK(nt_status)) {
1553                                 nt_status = NT_STATUS_UNSUCCESSFUL;
1554                         }
1555                         return nt_status;
1556                 }
1557         }
1558
1559         cli_init_creds(cli, user, domain, password);
1560
1561         *output_cli = cli;
1562         return NT_STATUS_OK;
1563 }
1564
1565 /****************************************************************************
1566  Attempt a NetBIOS session request, falling back to *SMBSERVER if needed.
1567 ****************************************************************************/
1568
1569 BOOL attempt_netbios_session_request(struct cli_state **ppcli, const char *srchost, const char *desthost,
1570                                      struct in_addr *pdest_ip)
1571 {
1572         struct nmb_name calling, called;
1573
1574         make_nmb_name(&calling, srchost, 0x0);
1575
1576         /*
1577          * If the called name is an IP address
1578          * then use *SMBSERVER immediately.
1579          */
1580
1581         if(is_ipaddress(desthost)) {
1582                 make_nmb_name(&called, "*SMBSERVER", 0x20);
1583         } else {
1584                 make_nmb_name(&called, desthost, 0x20);
1585         }
1586
1587         if (!cli_session_request(*ppcli, &calling, &called)) {
1588                 struct nmb_name smbservername;
1589
1590                 make_nmb_name(&smbservername , "*SMBSERVER", 0x20);
1591
1592                 /*
1593                  * If the name wasn't *SMBSERVER then
1594                  * try with *SMBSERVER if the first name fails.
1595                  */
1596
1597                 if (nmb_name_equal(&called, &smbservername)) {
1598
1599                         /*
1600                          * The name used was *SMBSERVER, don't bother with another name.
1601                          */
1602
1603                         DEBUG(0,("attempt_netbios_session_request: %s rejected the session for name *SMBSERVER \
1604 with error %s.\n", desthost, cli_errstr(*ppcli) ));
1605                         return False;
1606                 }
1607
1608                 /* Try again... */
1609                 cli_shutdown(*ppcli);
1610
1611                 *ppcli = cli_initialise();
1612                 if (!*ppcli) {
1613                         /* Out of memory... */
1614                         return False;
1615                 }
1616
1617                 if (!cli_connect(*ppcli, desthost, pdest_ip) ||
1618                                 !cli_session_request(*ppcli, &calling, &smbservername)) {
1619                         DEBUG(0,("attempt_netbios_session_request: %s rejected the session for \
1620 name *SMBSERVER with error %s\n", desthost, cli_errstr(*ppcli) ));
1621                         return False;
1622                 }
1623         }
1624
1625         return True;
1626 }
1627
1628
1629
1630
1631
1632 /****************************************************************************
1633  Send an old style tcon.
1634 ****************************************************************************/
1635 NTSTATUS cli_raw_tcon(struct cli_state *cli,
1636                       const char *service, const char *pass, const char *dev,
1637                       uint16 *max_xmit, uint16 *tid)
1638 {
1639         char *p;
1640
1641         if (!lp_client_plaintext_auth() && (*pass)) {
1642                 DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
1643                           " is disabled\n"));
1644                 return NT_STATUS_ACCESS_DENIED;
1645         }
1646
1647         memset(cli->outbuf,'\0',smb_size);
1648         memset(cli->inbuf,'\0',smb_size);
1649
1650         set_message(cli->outbuf, 0, 0, True);
1651         SCVAL(cli->outbuf,smb_com,SMBtcon);
1652         cli_setup_packet(cli);
1653
1654         p = smb_buf(cli->outbuf);
1655         *p++ = 4; p += clistr_push(cli, p, service, -1, STR_TERMINATE | STR_NOALIGN);
1656         *p++ = 4; p += clistr_push(cli, p, pass, -1, STR_TERMINATE | STR_NOALIGN);
1657         *p++ = 4; p += clistr_push(cli, p, dev, -1, STR_TERMINATE | STR_NOALIGN);
1658
1659         cli_setup_bcc(cli, p);
1660
1661         cli_send_smb(cli);
1662         if (!cli_receive_smb(cli)) {
1663                 return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
1664         }
1665
1666         if (cli_is_error(cli)) {
1667                 return cli_nt_error(cli);
1668         }
1669
1670         *max_xmit = SVAL(cli->inbuf, smb_vwv0);
1671         *tid = SVAL(cli->inbuf, smb_vwv1);
1672
1673         return NT_STATUS_OK;
1674 }
1675
1676 /* Return a cli_state pointing at the IPC$ share for the given server */
1677
1678 struct cli_state *get_ipc_connect(char *server, struct in_addr *server_ip,
1679                                          struct user_auth_info *user_info)
1680 {
1681         struct cli_state *cli;
1682         pstring myname;
1683         NTSTATUS nt_status;
1684
1685         get_myname(myname);
1686
1687         nt_status = cli_full_connection(&cli, myname, server, server_ip, 0, "IPC$", "IPC",
1688                                         user_info->username, lp_workgroup(), user_info->password,
1689                                         CLI_FULL_CONNECTION_ANNONYMOUS_FALLBACK, Undefined, NULL);
1690
1691         if (NT_STATUS_IS_OK(nt_status)) {
1692                 return cli;
1693         } else if (is_ipaddress(server)) {
1694             /* windows 9* needs a correct NMB name for connections */
1695             fstring remote_name;
1696
1697             if (name_status_find("*", 0, 0, *server_ip, remote_name)) {
1698                 cli = get_ipc_connect(remote_name, server_ip, user_info);
1699                 if (cli)
1700                     return cli;
1701             }
1702         }
1703         return NULL;
1704 }
1705
1706 /*
1707  * Given the IP address of a master browser on the network, return its
1708  * workgroup and connect to it.
1709  *
1710  * This function is provided to allow additional processing beyond what
1711  * get_ipc_connect_master_ip_bcast() does, e.g. to retrieve the list of master
1712  * browsers and obtain each master browsers' list of domains (in case the
1713  * first master browser is recently on the network and has not yet
1714  * synchronized with other master browsers and therefore does not yet have the
1715  * entire network browse list)
1716  */
1717
1718 struct cli_state *get_ipc_connect_master_ip(struct ip_service * mb_ip, pstring workgroup, struct user_auth_info *user_info)
1719 {
1720         static fstring name;
1721         struct cli_state *cli;
1722         struct in_addr server_ip;
1723
1724         DEBUG(99, ("Looking up name of master browser %s\n",
1725                    inet_ntoa(mb_ip->ip)));
1726
1727         /*
1728          * Do a name status query to find out the name of the master browser.
1729          * We use <01><02>__MSBROWSE__<02>#01 if *#00 fails because a domain
1730          * master browser will not respond to a wildcard query (or, at least,
1731          * an NT4 server acting as the domain master browser will not).
1732          *
1733          * We might be able to use ONLY the query on MSBROWSE, but that's not
1734          * yet been tested with all Windows versions, so until it is, leave
1735          * the original wildcard query as the first choice and fall back to
1736          * MSBROWSE if the wildcard query fails.
1737          */
1738         if (!name_status_find("*", 0, 0x1d, mb_ip->ip, name) &&
1739             !name_status_find(MSBROWSE, 1, 0x1d, mb_ip->ip, name)) {
1740
1741                 DEBUG(99, ("Could not retrieve name status for %s\n",
1742                            inet_ntoa(mb_ip->ip)));
1743                 return NULL;
1744         }
1745
1746         if (!find_master_ip(name, &server_ip)) {
1747                 DEBUG(99, ("Could not find master ip for %s\n", name));
1748                 return NULL;
1749         }
1750
1751                 pstrcpy(workgroup, name);
1752
1753                 DEBUG(4, ("found master browser %s, %s\n",
1754                   name, inet_ntoa(mb_ip->ip)));
1755
1756                 cli = get_ipc_connect(inet_ntoa(server_ip), &server_ip, user_info);
1757
1758                 return cli;
1759
1760 }
1761
1762 /*
1763  * Return the IP address and workgroup of a master browser on the network, and
1764  * connect to it.
1765  */
1766
1767 struct cli_state *get_ipc_connect_master_ip_bcast(pstring workgroup, struct user_auth_info *user_info)
1768 {
1769         struct ip_service *ip_list;
1770         struct cli_state *cli;
1771         int i, count;
1772
1773         DEBUG(99, ("Do broadcast lookup for workgroups on local network\n"));
1774
1775         /* Go looking for workgroups by broadcasting on the local network */
1776
1777         if (!name_resolve_bcast(MSBROWSE, 1, &ip_list, &count)) {
1778                 DEBUG(99, ("No master browsers responded\n"));
1779                 return False;
1780         }
1781
1782         for (i = 0; i < count; i++) {
1783             DEBUG(99, ("Found master browser %s\n", inet_ntoa(ip_list[i].ip)));
1784
1785             cli = get_ipc_connect_master_ip(&ip_list[i], workgroup, user_info);
1786             if (cli)
1787                     return(cli);
1788         }
1789
1790         return NULL;
1791 }