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 3 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, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "includes.h"
  22
  23 static const struct {
  24         int prot;
  25         const char name[24];
  26 } prots[10] = {
  27         {PROTOCOL_CORE,         "PC NETWORK PROGRAM 1.0"},
  28         {PROTOCOL_COREPLUS,     "MICROSOFT NETWORKS 1.03"},
  29         {PROTOCOL_LANMAN1,      "MICROSOFT NETWORKS 3.0"},
  30         {PROTOCOL_LANMAN1,      "LANMAN1.0"},
  31         {PROTOCOL_LANMAN2,      "LM1.2X002"},
  32         {PROTOCOL_LANMAN2,      "DOS LANMAN2.1"},
  33         {PROTOCOL_LANMAN2,      "LANMAN2.1"},
  34         {PROTOCOL_LANMAN2,      "Samba"},
  35         {PROTOCOL_NT1,          "NT LANMAN 1.0"},
  36         {PROTOCOL_NT1,          "NT LM 0.12"},
  37 };
  38
  39 #define STAR_SMBSERVER "*SMBSERVER"
  40
  41 /**
  42  * Set the user session key for a connection
  43  * @param cli The cli structure to add it too
  44  * @param session_key The session key used.  (A copy of this is taken for the cli struct)
  45  *
  46  */
  47
  48 static void cli_set_session_key (struct cli_state *cli, const DATA_BLOB session_key)
  49 {
  50         cli->user_session_key = data_blob(session_key.data, session_key.length);
  51 }
  52
  53 /****************************************************************************
  54  Do an old lanman2 style session setup.
  55 ****************************************************************************/
  56
  57 static NTSTATUS cli_session_setup_lanman2(struct cli_state *cli,
  58                                           const char *user,
  59                                           const char *pass, size_t passlen,
  60                                           const char *workgroup)
  61 {
  62         DATA_BLOB session_key = data_blob_null;
  63         DATA_BLOB lm_response = data_blob_null;
  64         fstring pword;
  65         char *p;
  66
  67         if (passlen > sizeof(pword)-1) {
  68                 return NT_STATUS_INVALID_PARAMETER;
  69         }
  70
  71         /* LANMAN servers predate NT status codes and Unicode and ignore those
  72            smb flags so we must disable the corresponding default capabilities
  73            that would otherwise cause the Unicode and NT Status flags to be
  74            set (and even returned by the server) */
  75
  76         cli->capabilities &= ~(CAP_UNICODE | CAP_STATUS32);
  77
  78         /* if in share level security then don't send a password now */
  79         if (!(cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL))
  80                 passlen = 0;
  81
  82         if (passlen > 0 && (cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && passlen != 24) {
  83                 /* Encrypted mode needed, and non encrypted password supplied. */
  84                 lm_response = data_blob(NULL, 24);
  85                 if (!SMBencrypt(pass, cli->secblob.data,(uchar *)lm_response.data)) {
  86                         DEBUG(1, ("Password is > 14 chars in length, and is therefore incompatible with Lanman authentication\n"));
  87                         return NT_STATUS_ACCESS_DENIED;
  88                 }
  89         } else if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && passlen == 24) {
  90                 /* Encrypted mode needed, and encrypted password supplied. */
  91                 lm_response = data_blob(pass, passlen);
  92         } else if (passlen > 0) {
  93                 /* Plaintext mode needed, assume plaintext supplied. */
  94                 passlen = clistr_push(cli, pword, pass, sizeof(pword), STR_TERMINATE);
  95                 lm_response = data_blob(pass, passlen);
  96         }
  97
  98         /* send a session setup command */
  99         memset(cli->outbuf,'\0',smb_size);
 100         cli_set_message(cli->outbuf,10, 0, True);
 101         SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
 102         cli_setup_packet(cli);
 103
 104         SCVAL(cli->outbuf,smb_vwv0,0xFF);
 105         SSVAL(cli->outbuf,smb_vwv2,cli->max_xmit);
 106         SSVAL(cli->outbuf,smb_vwv3,2);
 107         SSVAL(cli->outbuf,smb_vwv4,1);
 108         SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
 109         SSVAL(cli->outbuf,smb_vwv7,lm_response.length);
 110
 111         p = smb_buf(cli->outbuf);
 112         memcpy(p,lm_response.data,lm_response.length);
 113         p += lm_response.length;
 114         p += clistr_push(cli, p, user, -1, STR_TERMINATE|STR_UPPER);
 115         p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE|STR_UPPER);
 116         p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
 117         p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
 118         cli_setup_bcc(cli, p);
 119
 120         if (!cli_send_smb(cli) || !cli_receive_smb(cli)) {
 121                 return cli_nt_error(cli);
 122         }
 123
 124         show_msg(cli->inbuf);
 125
 126         if (cli_is_error(cli)) {
 127                 return cli_nt_error(cli);
 128         }
 129
 130         /* use the returned vuid from now on */
 131         cli->vuid = SVAL(cli->inbuf,smb_uid);
 132         fstrcpy(cli->user_name, user);
 133
 134         if (session_key.data) {
 135                 /* Have plaintext orginal */
 136                 cli_set_session_key(cli, session_key);
 137         }
 138
 139         return NT_STATUS_OK;
 140 }
 141
 142 /****************************************************************************
 143  Work out suitable capabilities to offer the server.
 144 ****************************************************************************/
 145
 146 static uint32 cli_session_setup_capabilities(struct cli_state *cli)
 147 {
 148         uint32 capabilities = CAP_NT_SMBS;
 149
 150         if (!cli->force_dos_errors)
 151                 capabilities |= CAP_STATUS32;
 152
 153         if (cli->use_level_II_oplocks)
 154                 capabilities |= CAP_LEVEL_II_OPLOCKS;
 155
 156         capabilities |= (cli->capabilities & (CAP_UNICODE|CAP_LARGE_FILES|CAP_LARGE_READX|CAP_LARGE_WRITEX|CAP_DFS));
 157         return capabilities;
 158 }
 159
 160 /****************************************************************************
 161  Do a NT1 guest session setup.
 162 ****************************************************************************/
 163
 164 static NTSTATUS cli_session_setup_guest(struct cli_state *cli)
 165 {
 166         char *p;
 167         uint32 capabilities = cli_session_setup_capabilities(cli);
 168
 169         memset(cli->outbuf, '\0', smb_size);
 170         cli_set_message(cli->outbuf,13,0,True);
 171         SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
 172         cli_setup_packet(cli);
 173
 174         SCVAL(cli->outbuf,smb_vwv0,0xFF);
 175         SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
 176         SSVAL(cli->outbuf,smb_vwv3,2);
 177         SSVAL(cli->outbuf,smb_vwv4,cli->pid);
 178         SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
 179         SSVAL(cli->outbuf,smb_vwv7,0);
 180         SSVAL(cli->outbuf,smb_vwv8,0);
 181         SIVAL(cli->outbuf,smb_vwv11,capabilities);
 182         p = smb_buf(cli->outbuf);
 183         p += clistr_push(cli, p, "", -1, STR_TERMINATE); /* username */
 184         p += clistr_push(cli, p, "", -1, STR_TERMINATE); /* workgroup */
 185         p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
 186         p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
 187         cli_setup_bcc(cli, p);
 188
 189         if (!cli_send_smb(cli) || !cli_receive_smb(cli)) {
 190                 return cli_nt_error(cli);
 191         }
 192
 193         show_msg(cli->inbuf);
 194
 195         if (cli_is_error(cli)) {
 196                 return cli_nt_error(cli);
 197         }
 198
 199         cli->vuid = SVAL(cli->inbuf,smb_uid);
 200
 201         p = smb_buf(cli->inbuf);
 202         p += clistr_pull(cli->inbuf, cli->server_os, p, sizeof(fstring),
 203                          -1, STR_TERMINATE);
 204         p += clistr_pull(cli->inbuf, cli->server_type, p, sizeof(fstring),
 205                          -1, STR_TERMINATE);
 206         p += clistr_pull(cli->inbuf, cli->server_domain, p, sizeof(fstring),
 207                          -1, STR_TERMINATE);
 208
 209         if (strstr(cli->server_type, "Samba")) {
 210                 cli->is_samba = True;
 211         }
 212
 213         fstrcpy(cli->user_name, "");
 214
 215         return NT_STATUS_OK;
 216 }
 217
 218 /****************************************************************************
 219  Do a NT1 plaintext session setup.
 220 ****************************************************************************/
 221
 222 static NTSTATUS cli_session_setup_plaintext(struct cli_state *cli,
 223                                             const char *user, const char *pass,
 224                                             const char *workgroup)
 225 {
 226         uint32 capabilities = cli_session_setup_capabilities(cli);
 227         char *p;
 228         fstring lanman;
 229
 230         fstr_sprintf( lanman, "Samba %s", samba_version_string());
 231
 232         memset(cli->outbuf, '\0', smb_size);
 233         cli_set_message(cli->outbuf,13,0,True);
 234         SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
 235         cli_setup_packet(cli);
 236
 237         SCVAL(cli->outbuf,smb_vwv0,0xFF);
 238         SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
 239         SSVAL(cli->outbuf,smb_vwv3,2);
 240         SSVAL(cli->outbuf,smb_vwv4,cli->pid);
 241         SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
 242         SSVAL(cli->outbuf,smb_vwv8,0);
 243         SIVAL(cli->outbuf,smb_vwv11,capabilities);
 244         p = smb_buf(cli->outbuf);
 245
 246         /* check wether to send the ASCII or UNICODE version of the password */
 247
 248         if ( (capabilities & CAP_UNICODE) == 0 ) {
 249                 p += clistr_push(cli, p, pass, -1, STR_TERMINATE); /* password */
 250                 SSVAL(cli->outbuf,smb_vwv7,PTR_DIFF(p, smb_buf(cli->outbuf)));
 251         }
 252         else {
 253                 /* For ucs2 passwords clistr_push calls ucs2_align, which causes
 254                  * the space taken by the unicode password to be one byte too
 255                  * long (as we're on an odd byte boundary here). Reduce the
 256                  * count by 1 to cope with this. Fixes smbclient against NetApp
 257                  * servers which can't cope. Fix from
 258                  * bryan.kolodziej@allenlund.com in bug #3840.
 259                  */
 260                 p += clistr_push(cli, p, pass, -1, STR_UNICODE|STR_TERMINATE); /* unicode password */
 261                 SSVAL(cli->outbuf,smb_vwv8,PTR_DIFF(p, smb_buf(cli->outbuf))-1);
 262         }
 263
 264         p += clistr_push(cli, p, user, -1, STR_TERMINATE); /* username */
 265         p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE); /* workgroup */
 266         p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
 267         p += clistr_push(cli, p, lanman, -1, STR_TERMINATE);
 268         cli_setup_bcc(cli, p);
 269
 270         if (!cli_send_smb(cli) || !cli_receive_smb(cli)) {
 271                 return cli_nt_error(cli);
 272         }
 273
 274         show_msg(cli->inbuf);
 275
 276         if (cli_is_error(cli)) {
 277                 return cli_nt_error(cli);
 278         }
 279
 280         cli->vuid = SVAL(cli->inbuf,smb_uid);
 281         p = smb_buf(cli->inbuf);
 282         p += clistr_pull(cli->inbuf, cli->server_os, p, sizeof(fstring),
 283                          -1, STR_TERMINATE);
 284         p += clistr_pull(cli->inbuf, cli->server_type, p, sizeof(fstring),
 285                          -1, STR_TERMINATE);
 286         p += clistr_pull(cli->inbuf, cli->server_domain, p, sizeof(fstring),
 287                          -1, STR_TERMINATE);
 288         fstrcpy(cli->user_name, user);
 289
 290         if (strstr(cli->server_type, "Samba")) {
 291                 cli->is_samba = True;
 292         }
 293
 294         return NT_STATUS_OK;
 295 }
 296
 297 /****************************************************************************
 298    do a NT1 NTLM/LM encrypted session setup - for when extended security
 299    is not negotiated.
 300    @param cli client state to create do session setup on
 301    @param user username
 302    @param pass *either* cleartext password (passlen !=24) or LM response.
 303    @param ntpass NT response, implies ntpasslen >=24, implies pass is not clear
 304    @param workgroup The user's domain.
 305 ****************************************************************************/
 306
 307 static NTSTATUS cli_session_setup_nt1(struct cli_state *cli, const char *user,
 308                                       const char *pass, size_t passlen,
 309                                       const char *ntpass, size_t ntpasslen,
 310                                       const char *workgroup)
 311 {
 312         uint32 capabilities = cli_session_setup_capabilities(cli);
 313         DATA_BLOB lm_response = data_blob_null;
 314         DATA_BLOB nt_response = data_blob_null;
 315         DATA_BLOB session_key = data_blob_null;
 316         NTSTATUS result;
 317         char *p;
 318
 319         if (passlen == 0) {
 320                 /* do nothing - guest login */
 321         } else if (passlen != 24) {
 322                 if (lp_client_ntlmv2_auth()) {
 323                         DATA_BLOB server_chal;
 324                         DATA_BLOB names_blob;
 325                         server_chal = data_blob(cli->secblob.data, MIN(cli->secblob.length, 8));
 326
 327                         /* note that the 'workgroup' here is a best guess - we don't know
 328                            the server's domain at this point.  The 'server name' is also
 329                            dodgy...
 330                         */
 331                         names_blob = NTLMv2_generate_names_blob(cli->called.name, workgroup);
 332
 333                         if (!SMBNTLMv2encrypt(user, workgroup, pass, &server_chal,
 334                                               &names_blob,
 335                                               &lm_response, &nt_response, &session_key)) {
 336                                 data_blob_free(&names_blob);
 337                                 data_blob_free(&server_chal);
 338                                 return NT_STATUS_ACCESS_DENIED;
 339                         }
 340                         data_blob_free(&names_blob);
 341                         data_blob_free(&server_chal);
 342
 343                 } else {
 344                         uchar nt_hash[16];
 345                         E_md4hash(pass, nt_hash);
 346
 347 #ifdef LANMAN_ONLY
 348                         nt_response = data_blob_null;
 349 #else
 350                         nt_response = data_blob(NULL, 24);
 351                         SMBNTencrypt(pass,cli->secblob.data,nt_response.data);
 352 #endif
 353                         /* non encrypted password supplied. Ignore ntpass. */
 354                         if (lp_client_lanman_auth()) {
 355                                 lm_response = data_blob(NULL, 24);
 356                                 if (!SMBencrypt(pass,cli->secblob.data, lm_response.data)) {
 357                                         /* Oops, the LM response is invalid, just put
 358                                            the NT response there instead */
 359                                         data_blob_free(&lm_response);
 360                                         lm_response = data_blob(nt_response.data, nt_response.length);
 361                                 }
 362                         } else {
 363                                 /* LM disabled, place NT# in LM field instead */
 364                                 lm_response = data_blob(nt_response.data, nt_response.length);
 365                         }
 366
 367                         session_key = data_blob(NULL, 16);
 368 #ifdef LANMAN_ONLY
 369                         E_deshash(pass, session_key.data);
 370                         memset(&session_key.data[8], '\0', 8);
 371 #else
 372                         SMBsesskeygen_ntv1(nt_hash, NULL, session_key.data);
 373 #endif
 374                 }
 375 #ifdef LANMAN_ONLY
 376                 cli_simple_set_signing(cli, session_key, lm_response);
 377 #else
 378                 cli_simple_set_signing(cli, session_key, nt_response);
 379 #endif
 380         } else {
 381                 /* pre-encrypted password supplied.  Only used for
 382                    security=server, can't do
 383                    signing because we don't have original key */
 384
 385                 lm_response = data_blob(pass, passlen);
 386                 nt_response = data_blob(ntpass, ntpasslen);
 387         }
 388
 389         /* send a session setup command */
 390         memset(cli->outbuf,'\0',smb_size);
 391
 392         cli_set_message(cli->outbuf,13,0,True);
 393         SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
 394         cli_setup_packet(cli);
 395
 396         SCVAL(cli->outbuf,smb_vwv0,0xFF);
 397         SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
 398         SSVAL(cli->outbuf,smb_vwv3,2);
 399         SSVAL(cli->outbuf,smb_vwv4,cli->pid);
 400         SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
 401         SSVAL(cli->outbuf,smb_vwv7,lm_response.length);
 402         SSVAL(cli->outbuf,smb_vwv8,nt_response.length);
 403         SIVAL(cli->outbuf,smb_vwv11,capabilities);
 404         p = smb_buf(cli->outbuf);
 405         if (lm_response.length) {
 406                 memcpy(p,lm_response.data, lm_response.length); p += lm_response.length;
 407         }
 408         if (nt_response.length) {
 409                 memcpy(p,nt_response.data, nt_response.length); p += nt_response.length;
 410         }
 411         p += clistr_push(cli, p, user, -1, STR_TERMINATE);
 412
 413         /* Upper case here might help some NTLMv2 implementations */
 414         p += clistr_push(cli, p, workgroup, -1, STR_TERMINATE|STR_UPPER);
 415         p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
 416         p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
 417         cli_setup_bcc(cli, p);
 418
 419         if (!cli_send_smb(cli) || !cli_receive_smb(cli)) {
 420                 result = cli_nt_error(cli);
 421                 goto end;
 422         }
 423
 424         /* show_msg(cli->inbuf); */
 425
 426         if (cli_is_error(cli)) {
 427                 result = cli_nt_error(cli);
 428                 goto end;
 429         }
 430
 431         /* use the returned vuid from now on */
 432         cli->vuid = SVAL(cli->inbuf,smb_uid);
 433
 434         p = smb_buf(cli->inbuf);
 435         p += clistr_pull(cli->inbuf, cli->server_os, p, sizeof(fstring),
 436                          -1, STR_TERMINATE);
 437         p += clistr_pull(cli->inbuf, cli->server_type, p, sizeof(fstring),
 438                          -1, STR_TERMINATE);
 439         p += clistr_pull(cli->inbuf, cli->server_domain, p, sizeof(fstring),
 440                          -1, STR_TERMINATE);
 441
 442         if (strstr(cli->server_type, "Samba")) {
 443                 cli->is_samba = True;
 444         }
 445
 446         fstrcpy(cli->user_name, user);
 447
 448         if (session_key.data) {
 449                 /* Have plaintext orginal */
 450                 cli_set_session_key(cli, session_key);
 451         }
 452
 453         result = NT_STATUS_OK;
 454 end:
 455         data_blob_free(&lm_response);
 456         data_blob_free(&nt_response);
 457         data_blob_free(&session_key);
 458         return result;
 459 }
 460
 461 /****************************************************************************
 462  Send a extended security session setup blob
 463 ****************************************************************************/
 464
 465 static bool cli_session_setup_blob_send(struct cli_state *cli, DATA_BLOB blob)
 466 {
 467         uint32 capabilities = cli_session_setup_capabilities(cli);
 468         char *p;
 469
 470         capabilities |= CAP_EXTENDED_SECURITY;
 471
 472         /* send a session setup command */
 473         memset(cli->outbuf,'\0',smb_size);
 474
 475         cli_set_message(cli->outbuf,12,0,True);
 476         SCVAL(cli->outbuf,smb_com,SMBsesssetupX);
 477
 478         cli_setup_packet(cli);
 479
 480         SCVAL(cli->outbuf,smb_vwv0,0xFF);
 481         SSVAL(cli->outbuf,smb_vwv2,CLI_BUFFER_SIZE);
 482         SSVAL(cli->outbuf,smb_vwv3,2);
 483         SSVAL(cli->outbuf,smb_vwv4,1);
 484         SIVAL(cli->outbuf,smb_vwv5,0);
 485         SSVAL(cli->outbuf,smb_vwv7,blob.length);
 486         SIVAL(cli->outbuf,smb_vwv10,capabilities);
 487         p = smb_buf(cli->outbuf);
 488         memcpy(p, blob.data, blob.length);
 489         p += blob.length;
 490         p += clistr_push(cli, p, "Unix", -1, STR_TERMINATE);
 491         p += clistr_push(cli, p, "Samba", -1, STR_TERMINATE);
 492         cli_setup_bcc(cli, p);
 493         return cli_send_smb(cli);
 494 }
 495
 496 /****************************************************************************
 497  Send a extended security session setup blob, returning a reply blob.
 498 ****************************************************************************/
 499
 500 static DATA_BLOB cli_session_setup_blob_receive(struct cli_state *cli)
 501 {
 502         DATA_BLOB blob2 = data_blob_null;
 503         char *p;
 504         size_t len;
 505
 506         if (!cli_receive_smb(cli))
 507                 return blob2;
 508
 509         show_msg(cli->inbuf);
 510
 511         if (cli_is_error(cli) && !NT_STATUS_EQUAL(cli_nt_error(cli),
 512                                                   NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 513                 return blob2;
 514         }
 515
 516         /* use the returned vuid from now on */
 517         cli->vuid = SVAL(cli->inbuf,smb_uid);
 518
 519         p = smb_buf(cli->inbuf);
 520
 521         blob2 = data_blob(p, SVAL(cli->inbuf, smb_vwv3));
 522
 523         p += blob2.length;
 524         p += clistr_pull(cli->inbuf, cli->server_os, p, sizeof(fstring),
 525                          -1, STR_TERMINATE);
 526
 527         /* w2k with kerberos doesn't properly null terminate this field */
 528         len = smb_bufrem(cli->inbuf, p);
 529         p += clistr_pull(cli->inbuf, cli->server_type, p, sizeof(fstring),
 530                          len, 0);
 531
 532         return blob2;
 533 }
 534
 535 #ifdef HAVE_KRB5
 536 /****************************************************************************
 537  Send a extended security session setup blob, returning a reply blob.
 538 ****************************************************************************/
 539
 540 /* The following is calculated from :
 541  * (smb_size-4) = 35
 542  * (smb_wcnt * 2) = 24 (smb_wcnt == 12 in cli_session_setup_blob_send() )
 543  * (strlen("Unix") + 1 + strlen("Samba") + 1) * 2 = 22 (unicode strings at
 544  * end of packet.
 545  */
 546
 547 #define BASE_SESSSETUP_BLOB_PACKET_SIZE (35 + 24 + 22)
 548
 549 static bool cli_session_setup_blob(struct cli_state *cli, DATA_BLOB blob)
 550 {
 551         int32 remaining = blob.length;
 552         int32 cur = 0;
 553         DATA_BLOB send_blob = data_blob_null;
 554         int32 max_blob_size = 0;
 555         DATA_BLOB receive_blob = data_blob_null;
 556
 557         if (cli->max_xmit < BASE_SESSSETUP_BLOB_PACKET_SIZE + 1) {
 558                 DEBUG(0,("cli_session_setup_blob: cli->max_xmit too small "
 559                         "(was %u, need minimum %u)\n",
 560                         (unsigned int)cli->max_xmit,
 561                         BASE_SESSSETUP_BLOB_PACKET_SIZE));
 562                 cli_set_nt_error(cli, NT_STATUS_INVALID_PARAMETER);
 563                 return False;
 564         }
 565
 566         max_blob_size = cli->max_xmit - BASE_SESSSETUP_BLOB_PACKET_SIZE;
 567
 568         while ( remaining > 0) {
 569                 if (remaining >= max_blob_size) {
 570                         send_blob.length = max_blob_size;
 571                         remaining -= max_blob_size;
 572                 } else {
 573                         send_blob.length = remaining;
 574                         remaining = 0;
 575                 }
 576
 577                 send_blob.data =  &blob.data[cur];
 578                 cur += send_blob.length;
 579
 580                 DEBUG(10, ("cli_session_setup_blob: Remaining (%u) sending (%u) current (%u)\n",
 581                         (unsigned int)remaining,
 582                         (unsigned int)send_blob.length,
 583                         (unsigned int)cur ));
 584
 585                 if (!cli_session_setup_blob_send(cli, send_blob)) {
 586                         DEBUG(0, ("cli_session_setup_blob: send failed\n"));
 587                         return False;
 588                 }
 589
 590                 receive_blob = cli_session_setup_blob_receive(cli);
 591                 data_blob_free(&receive_blob);
 592
 593                 if (cli_is_error(cli) &&
 594                                 !NT_STATUS_EQUAL( cli_get_nt_error(cli),
 595                                         NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 596                         DEBUG(0, ("cli_session_setup_blob: receive failed "
 597                                   "(%s)\n", nt_errstr(cli_get_nt_error(cli))));
 598                         cli->vuid = 0;
 599                         return False;
 600                 }
 601         }
 602
 603         return True;
 604 }
 605
 606 /****************************************************************************
 607  Use in-memory credentials cache
 608 ****************************************************************************/
 609
 610 static void use_in_memory_ccache(void) {
 611         setenv(KRB5_ENV_CCNAME, "MEMORY:cliconnect", 1);
 612 }
 613
 614 /****************************************************************************
 615  Do a spnego/kerberos encrypted session setup.
 616 ****************************************************************************/
 617
 618 static ADS_STATUS cli_session_setup_kerberos(struct cli_state *cli, const char *principal, const char *workgroup)
 619 {
 620         DATA_BLOB negTokenTarg;
 621         DATA_BLOB session_key_krb5;
 622         NTSTATUS nt_status;
 623         int rc;
 624
 625         cli_temp_set_signing(cli);
 626
 627         DEBUG(2,("Doing kerberos session setup\n"));
 628
 629         /* generate the encapsulated kerberos5 ticket */
 630         rc = spnego_gen_negTokenTarg(principal, 0, &negTokenTarg, &session_key_krb5, 0, NULL);
 631
 632         if (rc) {
 633                 DEBUG(1, ("cli_session_setup_kerberos: spnego_gen_negTokenTarg failed: %s\n",
 634                         error_message(rc)));
 635                 return ADS_ERROR_KRB5(rc);
 636         }
 637
 638 #if 0
 639         file_save("negTokenTarg.dat", negTokenTarg.data, negTokenTarg.length);
 640 #endif
 641
 642         if (!cli_session_setup_blob(cli, negTokenTarg)) {
 643                 nt_status = cli_nt_error(cli);
 644                 goto nt_error;
 645         }
 646
 647         if (cli_is_error(cli)) {
 648                 nt_status = cli_nt_error(cli);
 649                 if (NT_STATUS_IS_OK(nt_status)) {
 650                         nt_status = NT_STATUS_UNSUCCESSFUL;
 651                 }
 652                 goto nt_error;
 653         }
 654
 655         cli_set_session_key(cli, session_key_krb5);
 656
 657         if (cli_simple_set_signing(
 658                     cli, session_key_krb5, data_blob_null)) {
 659
 660                 /* 'resign' the last message, so we get the right sequence numbers
 661                    for checking the first reply from the server */
 662                 cli_calculate_sign_mac(cli, cli->outbuf);
 663
 664                 if (!cli_check_sign_mac(cli, cli->inbuf)) {
 665                         nt_status = NT_STATUS_ACCESS_DENIED;
 666                         goto nt_error;
 667                 }
 668         }
 669
 670         data_blob_free(&negTokenTarg);
 671         data_blob_free(&session_key_krb5);
 672
 673         return ADS_ERROR_NT(NT_STATUS_OK);
 674
 675 nt_error:
 676         data_blob_free(&negTokenTarg);
 677         data_blob_free(&session_key_krb5);
 678         cli->vuid = 0;
 679         return ADS_ERROR_NT(nt_status);
 680 }
 681 #endif  /* HAVE_KRB5 */
 682
 683
 684 /****************************************************************************
 685  Do a spnego/NTLMSSP encrypted session setup.
 686 ****************************************************************************/
 687
 688 static NTSTATUS cli_session_setup_ntlmssp(struct cli_state *cli, const char *user,
 689                                           const char *pass, const char *domain)
 690 {
 691         struct ntlmssp_state *ntlmssp_state;
 692         NTSTATUS nt_status;
 693         int turn = 1;
 694         DATA_BLOB msg1;
 695         DATA_BLOB blob = data_blob_null;
 696         DATA_BLOB blob_in = data_blob_null;
 697         DATA_BLOB blob_out = data_blob_null;
 698
 699         cli_temp_set_signing(cli);
 700
 701         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_client_start(&ntlmssp_state))) {
 702                 return nt_status;
 703         }
 704         ntlmssp_want_feature(ntlmssp_state, NTLMSSP_FEATURE_SESSION_KEY);
 705
 706         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_username(ntlmssp_state, user))) {
 707                 return nt_status;
 708         }
 709         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_domain(ntlmssp_state, domain))) {
 710                 return nt_status;
 711         }
 712         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_password(ntlmssp_state, pass))) {
 713                 return nt_status;
 714         }
 715
 716         do {
 717                 nt_status = ntlmssp_update(ntlmssp_state,
 718                                                   blob_in, &blob_out);
 719                 data_blob_free(&blob_in);
 720                 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED) || NT_STATUS_IS_OK(nt_status)) {
 721                         if (turn == 1) {
 722                                 /* and wrap it in a SPNEGO wrapper */
 723                                 msg1 = gen_negTokenInit(OID_NTLMSSP, blob_out);
 724                         } else {
 725                                 /* wrap it in SPNEGO */
 726                                 msg1 = spnego_gen_auth(blob_out);
 727                         }
 728
 729                         /* now send that blob on its way */
 730                         if (!cli_session_setup_blob_send(cli, msg1)) {
 731                                 DEBUG(3, ("Failed to send NTLMSSP/SPNEGO blob to server!\n"));
 732                                 nt_status = NT_STATUS_UNSUCCESSFUL;
 733                         } else {
 734                                 blob = cli_session_setup_blob_receive(cli);
 735
 736                                 nt_status = cli_nt_error(cli);
 737                                 if (cli_is_error(cli) && NT_STATUS_IS_OK(nt_status)) {
 738                                         if (cli->smb_rw_error == SMB_READ_BAD_SIG) {
 739                                                 nt_status = NT_STATUS_ACCESS_DENIED;
 740                                         } else {
 741                                                 nt_status = NT_STATUS_UNSUCCESSFUL;
 742                                         }
 743                                 }
 744                         }
 745                         data_blob_free(&msg1);
 746                 }
 747
 748                 if (!blob.length) {
 749                         if (NT_STATUS_IS_OK(nt_status)) {
 750                                 nt_status = NT_STATUS_UNSUCCESSFUL;
 751                         }
 752                 } else if ((turn == 1) &&
 753                            NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 754                         DATA_BLOB tmp_blob = data_blob_null;
 755                         /* the server might give us back two challenges */
 756                         if (!spnego_parse_challenge(blob, &blob_in,
 757                                                     &tmp_blob)) {
 758                                 DEBUG(3,("Failed to parse challenges\n"));
 759                                 nt_status = NT_STATUS_INVALID_PARAMETER;
 760                         }
 761                         data_blob_free(&tmp_blob);
 762                 } else {
 763                         if (!spnego_parse_auth_response(blob, nt_status, OID_NTLMSSP,
 764                                                         &blob_in)) {
 765                                 DEBUG(3,("Failed to parse auth response\n"));
 766                                 if (NT_STATUS_IS_OK(nt_status)
 767                                     || NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED))
 768                                         nt_status = NT_STATUS_INVALID_PARAMETER;
 769                         }
 770                 }
 771                 data_blob_free(&blob);
 772                 data_blob_free(&blob_out);
 773                 turn++;
 774         } while (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED));
 775
 776         data_blob_free(&blob_in);
 777
 778         if (NT_STATUS_IS_OK(nt_status)) {
 779
 780                 fstrcpy(cli->server_domain, ntlmssp_state->server_domain);
 781                 cli_set_session_key(cli, ntlmssp_state->session_key);
 782
 783                 if (cli_simple_set_signing(
 784                             cli, ntlmssp_state->session_key, data_blob_null)) {
 785
 786                         /* 'resign' the last message, so we get the right sequence numbers
 787                            for checking the first reply from the server */
 788                         cli_calculate_sign_mac(cli, cli->outbuf);
 789
 790                         if (!cli_check_sign_mac(cli, cli->inbuf)) {
 791                                 nt_status = NT_STATUS_ACCESS_DENIED;
 792                         }
 793                 }
 794         }
 795
 796         /* we have a reference conter on ntlmssp_state, if we are signing
 797            then the state will be kept by the signing engine */
 798
 799         ntlmssp_end(&ntlmssp_state);
 800
 801         if (!NT_STATUS_IS_OK(nt_status)) {
 802                 cli->vuid = 0;
 803         }
 804         return nt_status;
 805 }
 806
 807 /****************************************************************************
 808  Do a spnego encrypted session setup.
 809
 810  user_domain: The shortname of the domain the user/machine is a member of.
 811  dest_realm: The realm we're connecting to, if NULL we use our default realm.
 812 ****************************************************************************/
 813
 814 ADS_STATUS cli_session_setup_spnego(struct cli_state *cli, const char *user,
 815                               const char *pass, const char *user_domain,
 816                               const char * dest_realm)
 817 {
 818         char *principal = NULL;
 819         char *OIDs[ASN1_MAX_OIDS];
 820         int i;
 821         DATA_BLOB blob;
 822         const char *p = NULL;
 823         char *account = NULL;
 824
 825         DEBUG(3,("Doing spnego session setup (blob length=%lu)\n", (unsigned long)cli->secblob.length));
 826
 827         /* the server might not even do spnego */
 828         if (cli->secblob.length <= 16) {
 829                 DEBUG(3,("server didn't supply a full spnego negprot\n"));
 830                 goto ntlmssp;
 831         }
 832
 833 #if 0
 834         file_save("negprot.dat", cli->secblob.data, cli->secblob.length);
 835 #endif
 836
 837         /* there is 16 bytes of GUID before the real spnego packet starts */
 838         blob = data_blob(cli->secblob.data+16, cli->secblob.length-16);
 839
 840         /* The server sent us the first part of the SPNEGO exchange in the
 841          * negprot reply. It is WRONG to depend on the principal sent in the
 842          * negprot reply, but right now we do it. If we don't receive one,
 843          * we try to best guess, then fall back to NTLM.  */
 844         if (!spnego_parse_negTokenInit(blob, OIDs, &principal)) {
 845                 data_blob_free(&blob);
 846                 return ADS_ERROR_NT(NT_STATUS_INVALID_PARAMETER);
 847         }
 848         data_blob_free(&blob);
 849
 850         /* make sure the server understands kerberos */
 851         for (i=0;OIDs[i];i++) {
 852                 DEBUG(3,("got OID=%s\n", OIDs[i]));
 853                 if (strcmp(OIDs[i], OID_KERBEROS5_OLD) == 0 ||
 854                     strcmp(OIDs[i], OID_KERBEROS5) == 0) {
 855                         cli->got_kerberos_mechanism = True;
 856                 }
 857                 talloc_free(OIDs[i]);
 858         }
 859
 860         DEBUG(3,("got principal=%s\n", principal ? principal : "<null>"));
 861
 862         fstrcpy(cli->user_name, user);
 863
 864 #ifdef HAVE_KRB5
 865         /* If password is set we reauthenticate to kerberos server
 866          * and do not store results */
 867
 868         if (cli->got_kerberos_mechanism && cli->use_kerberos) {
 869                 ADS_STATUS rc;
 870
 871                 if (pass && *pass) {
 872                         int ret;
 873
 874                         use_in_memory_ccache();
 875                         ret = kerberos_kinit_password(user, pass, 0 /* no time correction for now */, NULL);
 876
 877                         if (ret){
 878                                 TALLOC_FREE(principal);
 879                                 DEBUG(0, ("Kinit failed: %s\n", error_message(ret)));
 880                                 if (cli->fallback_after_kerberos)
 881                                         goto ntlmssp;
 882                                 return ADS_ERROR_KRB5(ret);
 883                         }
 884                 }
 885
 886                 /* If we get a bad principal, try to guess it if
 887                    we have a valid host NetBIOS name.
 888                  */
 889                 if (strequal(principal, ADS_IGNORE_PRINCIPAL)) {
 890                         TALLOC_FREE(principal);
 891                 }
 892
 893                 if (principal == NULL &&
 894                         !is_ipaddress(cli->desthost) &&
 895                         !strequal(STAR_SMBSERVER,
 896                                 cli->desthost)) {
 897                         char *realm = NULL;
 898                         char *machine = NULL;
 899                         char *host = NULL;
 900                         DEBUG(3,("cli_session_setup_spnego: got a "
 901                                 "bad server principal, trying to guess ...\n"));
 902
 903                         host = strchr_m(cli->desthost, '.');
 904                         if (host) {
 905                                 machine = SMB_STRNDUP(cli->desthost,
 906                                         host - cli->desthost);
 907                         } else {
 908                                 machine = SMB_STRDUP(cli->desthost);
 909                         }
 910                         if (machine == NULL) {
 911                                 return ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
 912                         }
 913
 914                         if (dest_realm) {
 915                                 realm = SMB_STRDUP(dest_realm);
 916                                 strupper_m(realm);
 917                         } else {
 918                                 realm = kerberos_get_default_realm_from_ccache();
 919                         }
 920                         if (realm && *realm) {
 921                                 principal = talloc_asprintf(NULL, "%s$@%s",
 922                                                         machine, realm);
 923                                 if (!principal) {
 924                                         SAFE_FREE(machine);
 925                                         SAFE_FREE(realm);
 926                                         return ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
 927                                 }
 928                                 DEBUG(3,("cli_session_setup_spnego: guessed "
 929                                         "server principal=%s\n",
 930                                         principal ? principal : "<null>"));
 931                         }
 932                         SAFE_FREE(machine);
 933                         SAFE_FREE(realm);
 934                 }
 935
 936                 if (principal) {
 937                         rc = cli_session_setup_kerberos(cli, principal,
 938                                 dest_realm);
 939                         if (ADS_ERR_OK(rc) || !cli->fallback_after_kerberos) {
 940                                 TALLOC_FREE(principal);
 941                                 return rc;
 942                         }
 943                 }
 944         }
 945 #endif
 946
 947         TALLOC_FREE(principal);
 948
 949 ntlmssp:
 950
 951         account = talloc_strdup(talloc_tos(), user);
 952         if (!account) {
 953                 return ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
 954         }
 955
 956         /* when falling back to ntlmssp while authenticating with a machine
 957          * account strip off the realm - gd */
 958
 959         if ((p = strchr_m(user, '@')) != NULL) {
 960                 account[PTR_DIFF(p,user)] = '\0';
 961         }
 962
 963         return ADS_ERROR_NT(cli_session_setup_ntlmssp(cli, account, pass, user_domain));
 964 }
 965
 966 /****************************************************************************
 967  Send a session setup. The username and workgroup is in UNIX character
 968  format and must be converted to DOS codepage format before sending. If the
 969  password is in plaintext, the same should be done.
 970 ****************************************************************************/
 971
 972 NTSTATUS cli_session_setup(struct cli_state *cli,
 973                            const char *user,
 974                            const char *pass, int passlen,
 975                            const char *ntpass, int ntpasslen,
 976                            const char *workgroup)
 977 {
 978         char *p;
 979         fstring user2;
 980
 981         if (user) {
 982                 fstrcpy(user2, user);
 983         } else {
 984                 user2[0] ='\0';
 985         }
 986
 987         if (!workgroup) {
 988                 workgroup = "";
 989         }
 990
 991         /* allow for workgroups as part of the username */
 992         if ((p=strchr_m(user2,'\\')) || (p=strchr_m(user2,'/')) ||
 993             (p=strchr_m(user2,*lp_winbind_separator()))) {
 994                 *p = 0;
 995                 user = p+1;
 996                 workgroup = user2;
 997         }
 998
 999         if (cli->protocol < PROTOCOL_LANMAN1) {
1000                 return NT_STATUS_OK;
1001         }
1002
1003         /* now work out what sort of session setup we are going to
1004            do. I have split this into separate functions to make the
1005            flow a bit easier to understand (tridge) */
1006
1007         /* if its an older server then we have to use the older request format */
1008
1009         if (cli->protocol < PROTOCOL_NT1) {
1010                 if (!lp_client_lanman_auth() && passlen != 24 && (*pass)) {
1011                         DEBUG(1, ("Server requested LM password but 'client lanman auth'"
1012                                   " is disabled\n"));
1013                         return NT_STATUS_ACCESS_DENIED;
1014                 }
1015
1016                 if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0 &&
1017                     !lp_client_plaintext_auth() && (*pass)) {
1018                         DEBUG(1, ("Server requested plaintext password but "
1019                                   "'client plaintext auth' is disabled\n"));
1020                         return NT_STATUS_ACCESS_DENIED;
1021                 }
1022
1023                 return cli_session_setup_lanman2(cli, user, pass, passlen,
1024                                                  workgroup);
1025         }
1026
1027         /* if no user is supplied then we have to do an anonymous connection.
1028            passwords are ignored */
1029
1030         if (!user || !*user)
1031                 return cli_session_setup_guest(cli);
1032
1033         /* if the server is share level then send a plaintext null
1034            password at this point. The password is sent in the tree
1035            connect */
1036
1037         if ((cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) == 0)
1038                 return cli_session_setup_plaintext(cli, user, "", workgroup);
1039
1040         /* if the server doesn't support encryption then we have to use
1041            plaintext. The second password is ignored */
1042
1043         if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0) {
1044                 if (!lp_client_plaintext_auth() && (*pass)) {
1045                         DEBUG(1, ("Server requested plaintext password but "
1046                                   "'client plaintext auth' is disabled\n"));
1047                         return NT_STATUS_ACCESS_DENIED;
1048                 }
1049                 return cli_session_setup_plaintext(cli, user, pass, workgroup);
1050         }
1051
1052         /* if the server supports extended security then use SPNEGO */
1053
1054         if (cli->capabilities & CAP_EXTENDED_SECURITY) {
1055                 ADS_STATUS status = cli_session_setup_spnego(cli, user, pass,
1056                                                              workgroup, NULL);
1057                 if (!ADS_ERR_OK(status)) {
1058                         DEBUG(3, ("SPNEGO login failed: %s\n", ads_errstr(status)));
1059                         return ads_ntstatus(status);
1060                 }
1061         } else {
1062                 NTSTATUS status;
1063
1064                 /* otherwise do a NT1 style session setup */
1065                 status = cli_session_setup_nt1(cli, user, pass, passlen,
1066                                                ntpass, ntpasslen, workgroup);
1067                 if (!NT_STATUS_IS_OK(status)) {
1068                         DEBUG(3,("cli_session_setup: NT1 session setup "
1069                                  "failed: %s\n", nt_errstr(status)));
1070                         return status;
1071                 }
1072         }
1073
1074         if (strstr(cli->server_type, "Samba")) {
1075                 cli->is_samba = True;
1076         }
1077
1078         return NT_STATUS_OK;
1079 }
1080
1081 /****************************************************************************
1082  Send a uloggoff.
1083 *****************************************************************************/
1084
1085 bool cli_ulogoff(struct cli_state *cli)
1086 {
1087         memset(cli->outbuf,'\0',smb_size);
1088         cli_set_message(cli->outbuf,2,0,True);
1089         SCVAL(cli->outbuf,smb_com,SMBulogoffX);
1090         cli_setup_packet(cli);
1091         SSVAL(cli->outbuf,smb_vwv0,0xFF);
1092         SSVAL(cli->outbuf,smb_vwv2,0);  /* no additional info */
1093
1094         cli_send_smb(cli);
1095         if (!cli_receive_smb(cli))
1096                 return False;
1097
1098         if (cli_is_error(cli)) {
1099                 return False;
1100         }
1101
1102         cli->cnum = -1;
1103         return True;
1104 }
1105
1106 /****************************************************************************
1107  Send a tconX.
1108 ****************************************************************************/
1109
1110 bool cli_send_tconX(struct cli_state *cli,
1111                     const char *share, const char *dev, const char *pass, int passlen)
1112 {
1113         fstring fullshare, pword;
1114         char *p;
1115         memset(cli->outbuf,'\0',smb_size);
1116         memset(cli->inbuf,'\0',smb_size);
1117
1118         fstrcpy(cli->share, share);
1119
1120         /* in user level security don't send a password now */
1121         if (cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) {
1122                 passlen = 1;
1123                 pass = "";
1124         } else if (!pass) {
1125                 DEBUG(1, ("Server not using user level security and no password supplied.\n"));
1126                 return False;
1127         }
1128
1129         if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) &&
1130             *pass && passlen != 24) {
1131                 if (!lp_client_lanman_auth()) {
1132                         DEBUG(1, ("Server requested LANMAN password "
1133                                   "(share-level security) but "
1134                                   "'client lanman auth' is disabled\n"));
1135                         return False;
1136                 }
1137
1138                 /*
1139                  * Non-encrypted passwords - convert to DOS codepage before encryption.
1140                  */
1141                 passlen = 24;
1142                 SMBencrypt(pass,cli->secblob.data,(uchar *)pword);
1143         } else {
1144                 if((cli->sec_mode & (NEGOTIATE_SECURITY_USER_LEVEL|NEGOTIATE_SECURITY_CHALLENGE_RESPONSE)) == 0) {
1145                         if (!lp_client_plaintext_auth() && (*pass)) {
1146                                 DEBUG(1, ("Server requested plaintext "
1147                                           "password but 'client plaintext "
1148                                           "auth' is disabled\n"));
1149                                 return False;
1150                         }
1151
1152                         /*
1153                          * Non-encrypted passwords - convert to DOS codepage before using.
1154                          */
1155                         passlen = clistr_push(cli, pword, pass, sizeof(pword), STR_TERMINATE);
1156
1157                 } else {
1158                         if (passlen) {
1159                                 memcpy(pword, pass, passlen);
1160                         }
1161                 }
1162         }
1163
1164         slprintf(fullshare, sizeof(fullshare)-1,
1165                  "\\\\%s\\%s", cli->desthost, share);
1166
1167         cli_set_message(cli->outbuf,4, 0, True);
1168         SCVAL(cli->outbuf,smb_com,SMBtconX);
1169         cli_setup_packet(cli);
1170
1171         SSVAL(cli->outbuf,smb_vwv0,0xFF);
1172         SSVAL(cli->outbuf,smb_vwv2,TCONX_FLAG_EXTENDED_RESPONSE);
1173         SSVAL(cli->outbuf,smb_vwv3,passlen);
1174
1175         p = smb_buf(cli->outbuf);
1176         if (passlen) {
1177                 memcpy(p,pword,passlen);
1178         }
1179         p += passlen;
1180         p += clistr_push(cli, p, fullshare, -1, STR_TERMINATE |STR_UPPER);
1181         p += clistr_push(cli, p, dev, -1, STR_TERMINATE |STR_UPPER | STR_ASCII);
1182
1183         cli_setup_bcc(cli, p);
1184
1185         cli_send_smb(cli);
1186         if (!cli_receive_smb(cli))
1187                 return False;
1188
1189         if (cli_is_error(cli))
1190                 return False;
1191
1192         clistr_pull(cli->inbuf, cli->dev, smb_buf(cli->inbuf), sizeof(fstring),
1193                     -1, STR_TERMINATE|STR_ASCII);
1194
1195         if (cli->protocol >= PROTOCOL_NT1 &&
1196             smb_buflen(cli->inbuf) == 3) {
1197                 /* almost certainly win95 - enable bug fixes */
1198                 cli->win95 = True;
1199         }
1200
1201         /* Make sure that we have the optional support 16-bit field.  WCT > 2 */
1202         /* Avoids issues when connecting to Win9x boxes sharing files */
1203
1204         cli->dfsroot = False;
1205         if ( (CVAL(cli->inbuf, smb_wct))>2 && cli->protocol >= PROTOCOL_LANMAN2 )
1206                 cli->dfsroot = (SVAL( cli->inbuf, smb_vwv2 ) & SMB_SHARE_IN_DFS) ? True : False;
1207
1208         cli->cnum = SVAL(cli->inbuf,smb_tid);
1209         return True;
1210 }
1211
1212 /****************************************************************************
1213  Send a tree disconnect.
1214 ****************************************************************************/
1215
1216 bool cli_tdis(struct cli_state *cli)
1217 {
1218         memset(cli->outbuf,'\0',smb_size);
1219         cli_set_message(cli->outbuf,0,0,True);
1220         SCVAL(cli->outbuf,smb_com,SMBtdis);
1221         SSVAL(cli->outbuf,smb_tid,cli->cnum);
1222         cli_setup_packet(cli);
1223
1224         cli_send_smb(cli);
1225         if (!cli_receive_smb(cli))
1226                 return False;
1227
1228         if (cli_is_error(cli)) {
1229                 return False;
1230         }
1231
1232         cli->cnum = -1;
1233         return True;
1234 }
1235
1236 /****************************************************************************
1237  Send a negprot command.
1238 ****************************************************************************/
1239
1240 void cli_negprot_sendsync(struct cli_state *cli)
1241 {
1242         char *p;
1243         int numprots;
1244
1245         if (cli->protocol < PROTOCOL_NT1)
1246                 cli->use_spnego = False;
1247
1248         memset(cli->outbuf,'\0',smb_size);
1249
1250         /* setup the protocol strings */
1251         cli_set_message(cli->outbuf,0,0,True);
1252
1253         p = smb_buf(cli->outbuf);
1254         for (numprots=0; numprots < ARRAY_SIZE(prots); numprots++) {
1255                 if (prots[numprots].prot > cli->protocol) {
1256                         break;
1257                 }
1258                 *p++ = 2;
1259                 p += clistr_push(cli, p, prots[numprots].name, -1, STR_TERMINATE);
1260         }
1261
1262         SCVAL(cli->outbuf,smb_com,SMBnegprot);
1263         cli_setup_bcc(cli, p);
1264         cli_setup_packet(cli);
1265
1266         SCVAL(smb_buf(cli->outbuf),0,2);
1267
1268         cli_send_smb(cli);
1269 }
1270
1271 /****************************************************************************
1272  Send a negprot command.
1273 ****************************************************************************/
1274
1275 struct async_req *cli_negprot_send(TALLOC_CTX *mem_ctx,
1276                                    struct event_context *ev,
1277                                    struct cli_state *cli)
1278 {
1279         struct async_req *result;
1280         uint8_t *bytes = NULL;
1281         int numprots;
1282
1283         if (cli->protocol < PROTOCOL_NT1)
1284                 cli->use_spnego = False;
1285
1286         /* setup the protocol strings */
1287         for (numprots=0; numprots < ARRAY_SIZE(prots); numprots++) {
1288                 uint8_t c = 2;
1289                 if (prots[numprots].prot > cli->protocol) {
1290                         break;
1291                 }
1292                 bytes = (uint8_t *)talloc_append_blob(
1293                         talloc_tos(), bytes, data_blob_const(&c, sizeof(c)));
1294                 if (bytes == NULL) {
1295                         return NULL;
1296                 }
1297                 bytes = smb_bytes_push_str(bytes, false,
1298                                            prots[numprots].name,
1299                                            strlen(prots[numprots].name)+1,
1300                                            NULL);
1301                 if (bytes == NULL) {
1302                         return NULL;
1303                 }
1304         }
1305
1306         result = cli_request_send(mem_ctx, ev, cli, SMBnegprot, 0, 0, NULL, 0,
1307                                   talloc_get_size(bytes), bytes);
1308         TALLOC_FREE(bytes);
1309         return result;
1310 }
1311
1312 NTSTATUS cli_negprot_recv(struct async_req *req)
1313 {
1314         struct cli_request *cli_req = talloc_get_type_abort(
1315                 req->private_data, struct cli_request);
1316         struct cli_state *cli = cli_req->cli;
1317         uint8_t wct;
1318         uint16_t *vwv;
1319         uint16_t num_bytes;
1320         uint8_t *bytes;
1321         NTSTATUS status;
1322         uint16_t protnum;
1323
1324         if (async_req_is_error(req, &status)) {
1325                 return status;
1326         }
1327
1328         status = cli_pull_reply(req, &wct, &vwv, &num_bytes, &bytes);
1329         if (!NT_STATUS_IS_OK(status)) {
1330                 return status;
1331         }
1332
1333         protnum = SVAL(vwv, 0);
1334
1335         if ((protnum >= ARRAY_SIZE(prots))
1336             || (prots[protnum].prot > cli_req->cli->protocol)) {
1337                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1338         }
1339
1340         cli->protocol = prots[protnum].prot;
1341
1342         if ((cli->protocol < PROTOCOL_NT1) && cli->sign_info.mandatory_signing) {
1343                 DEBUG(0,("cli_negprot: SMB signing is mandatory and the selected protocol level doesn't support it.\n"));
1344                 return NT_STATUS_ACCESS_DENIED;
1345         }
1346
1347         if (cli->protocol >= PROTOCOL_NT1) {
1348                 struct timespec ts;
1349                 /* NT protocol */
1350                 cli->sec_mode = CVAL(vwv + 1, 0);
1351                 cli->max_mux = SVAL(vwv + 1, 1);
1352                 cli->max_xmit = IVAL(vwv + 3, 1);
1353                 cli->sesskey = IVAL(vwv + 7, 1);
1354                 cli->serverzone = SVALS(vwv + 15, 1);
1355                 cli->serverzone *= 60;
1356                 /* this time arrives in real GMT */
1357                 ts = interpret_long_date(((char *)(vwv+11))+1);
1358                 cli->servertime = ts.tv_sec;
1359                 cli->secblob = data_blob(bytes, num_bytes);
1360                 cli->capabilities = IVAL(vwv + 9, 1);
1361                 if (cli->capabilities & CAP_RAW_MODE) {
1362                         cli->readbraw_supported = True;
1363                         cli->writebraw_supported = True;
1364                 }
1365                 /* work out if they sent us a workgroup */
1366                 if (!(cli->capabilities & CAP_EXTENDED_SECURITY) &&
1367                     smb_buflen(cli->inbuf) > 8) {
1368                         clistr_pull(cli->inbuf, cli->server_domain,
1369                                     bytes+8, sizeof(cli->server_domain),
1370                                     num_bytes-8,
1371                                     STR_UNICODE|STR_NOALIGN);
1372                 }
1373
1374                 /*
1375                  * As signing is slow we only turn it on if either the client or
1376                  * the server require it. JRA.
1377                  */
1378
1379                 if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_REQUIRED) {
1380                         /* Fail if server says signing is mandatory and we don't want to support it. */
1381                         if (!cli->sign_info.allow_smb_signing) {
1382                                 DEBUG(0,("cli_negprot: SMB signing is mandatory and we have disabled it.\n"));
1383                                 return NT_STATUS_ACCESS_DENIED;
1384                         }
1385                         cli->sign_info.negotiated_smb_signing = True;
1386                         cli->sign_info.mandatory_signing = True;
1387                 } else if (cli->sign_info.mandatory_signing && cli->sign_info.allow_smb_signing) {
1388                         /* Fail if client says signing is mandatory and the server doesn't support it. */
1389                         if (!(cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED)) {
1390                                 DEBUG(1,("cli_negprot: SMB signing is mandatory and the server doesn't support it.\n"));
1391                                 return NT_STATUS_ACCESS_DENIED;
1392                         }
1393                         cli->sign_info.negotiated_smb_signing = True;
1394                         cli->sign_info.mandatory_signing = True;
1395                 } else if (cli->sec_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED) {
1396                         cli->sign_info.negotiated_smb_signing = True;
1397                 }
1398
1399                 if (cli->capabilities & (CAP_LARGE_READX|CAP_LARGE_WRITEX)) {
1400                         SAFE_FREE(cli->outbuf);
1401                         SAFE_FREE(cli->inbuf);
1402                         cli->outbuf = (char *)SMB_MALLOC(CLI_SAMBA_MAX_LARGE_READX_SIZE+LARGE_WRITEX_HDR_SIZE+SAFETY_MARGIN);
1403                         cli->inbuf = (char *)SMB_MALLOC(CLI_SAMBA_MAX_LARGE_READX_SIZE+LARGE_WRITEX_HDR_SIZE+SAFETY_MARGIN);
1404                         cli->bufsize = CLI_SAMBA_MAX_LARGE_READX_SIZE + LARGE_WRITEX_HDR_SIZE;
1405                 }
1406
1407         } else if (cli->protocol >= PROTOCOL_LANMAN1) {
1408                 cli->use_spnego = False;
1409                 cli->sec_mode = SVAL(vwv + 1, 0);
1410                 cli->max_xmit = SVAL(vwv + 2, 0);
1411                 cli->max_mux = SVAL(vwv + 3, 0);
1412                 cli->sesskey = IVAL(vwv + 6, 0);
1413                 cli->serverzone = SVALS(vwv + 10, 0);
1414                 cli->serverzone *= 60;
1415                 /* this time is converted to GMT by make_unix_date */
1416                 cli->servertime = cli_make_unix_date(
1417                         cli, (char *)(vwv + 8));
1418                 cli->readbraw_supported = ((SVAL(vwv + 5, 0) & 0x1) != 0);
1419                 cli->writebraw_supported = ((SVAL(vwv + 5, 0) & 0x2) != 0);
1420                 cli->secblob = data_blob(bytes, num_bytes);
1421         } else {
1422                 /* the old core protocol */
1423                 cli->use_spnego = False;
1424                 cli->sec_mode = 0;
1425                 cli->serverzone = get_time_zone(time(NULL));
1426         }
1427
1428         cli->max_xmit = MIN(cli->max_xmit, CLI_BUFFER_SIZE);
1429
1430         /* a way to force ascii SMB */
1431         if (getenv("CLI_FORCE_ASCII"))
1432                 cli->capabilities &= ~CAP_UNICODE;
1433
1434         return NT_STATUS_OK;
1435 }
1436
1437 NTSTATUS cli_negprot(struct cli_state *cli)
1438 {
1439         TALLOC_CTX *frame = talloc_stackframe();
1440         struct event_context *ev;
1441         struct async_req *req;
1442         NTSTATUS status = NT_STATUS_NO_MEMORY;
1443
1444         if (cli->fd_event != NULL) {
1445                 /*
1446                  * Can't use sync call while an async call is in flight
1447                  */
1448                 cli_set_error(cli, NT_STATUS_INVALID_PARAMETER);
1449                 goto fail;
1450         }
1451
1452         ev = event_context_init(frame);
1453         if (ev == NULL) {
1454                 goto fail;
1455         }
1456
1457         req = cli_negprot_send(frame, ev, cli);
1458         if (req == NULL) {
1459                 goto fail;
1460         }
1461
1462         while (req->state < ASYNC_REQ_DONE) {
1463                 event_loop_once(ev);
1464         }
1465
1466         status = cli_negprot_recv(req);
1467  fail:
1468         TALLOC_FREE(frame);
1469         return status;
1470 }
1471
1472 /****************************************************************************
1473  Send a session request. See rfc1002.txt 4.3 and 4.3.2.
1474 ****************************************************************************/
1475
1476 bool cli_session_request(struct cli_state *cli,
1477                          struct nmb_name *calling, struct nmb_name *called)
1478 {
1479         char *p;
1480         int len = 4;
1481
1482         /* 445 doesn't have session request */
1483         if (cli->port == 445)
1484                 return True;
1485
1486         memcpy(&(cli->calling), calling, sizeof(*calling));
1487         memcpy(&(cli->called ), called , sizeof(*called ));
1488
1489         /* put in the destination name */
1490         p = cli->outbuf+len;
1491         name_mangle(cli->called .name, p, cli->called .name_type);
1492         len += name_len(p);
1493
1494         /* and my name */
1495         p = cli->outbuf+len;
1496         name_mangle(cli->calling.name, p, cli->calling.name_type);
1497         len += name_len(p);
1498
1499         /* send a session request (RFC 1002) */
1500         /* setup the packet length
1501          * Remove four bytes from the length count, since the length
1502          * field in the NBT Session Service header counts the number
1503          * of bytes which follow.  The cli_send_smb() function knows
1504          * about this and accounts for those four bytes.
1505          * CRH.
1506          */
1507         len -= 4;
1508         _smb_setlen(cli->outbuf,len);
1509         SCVAL(cli->outbuf,0,0x81);
1510
1511         cli_send_smb(cli);
1512         DEBUG(5,("Sent session request\n"));
1513
1514         if (!cli_receive_smb(cli))
1515                 return False;
1516
1517         if (CVAL(cli->inbuf,0) == 0x84) {
1518                 /* C. Hoch  9/14/95 Start */
1519                 /* For information, here is the response structure.
1520                  * We do the byte-twiddling to for portability.
1521                 struct RetargetResponse{
1522                 unsigned char type;
1523                 unsigned char flags;
1524                 int16 length;
1525                 int32 ip_addr;
1526                 int16 port;
1527                 };
1528                 */
1529                 uint16_t port = (CVAL(cli->inbuf,8)<<8)+CVAL(cli->inbuf,9);
1530                 struct in_addr dest_ip;
1531                 NTSTATUS status;
1532
1533                 /* SESSION RETARGET */
1534                 putip((char *)&dest_ip,cli->inbuf+4);
1535                 in_addr_to_sockaddr_storage(&cli->dest_ss, dest_ip);
1536
1537                 status = open_socket_out(&cli->dest_ss, port,
1538                                          LONG_CONNECT_TIMEOUT, &cli->fd);
1539                 if (!NT_STATUS_IS_OK(status)) {
1540                         return False;
1541                 }
1542
1543                 DEBUG(3,("Retargeted\n"));
1544
1545                 set_socket_options(cli->fd, lp_socket_options());
1546
1547                 /* Try again */
1548                 {
1549                         static int depth;
1550                         bool ret;
1551                         if (depth > 4) {
1552                                 DEBUG(0,("Retarget recursion - failing\n"));
1553                                 return False;
1554                         }
1555                         depth++;
1556                         ret = cli_session_request(cli, calling, called);
1557                         depth--;
1558                         return ret;
1559                 }
1560         } /* C. Hoch 9/14/95 End */
1561
1562         if (CVAL(cli->inbuf,0) != 0x82) {
1563                 /* This is the wrong place to put the error... JRA. */
1564                 cli->rap_error = CVAL(cli->inbuf,4);
1565                 return False;
1566         }
1567         return(True);
1568 }
1569
1570 static void smb_sock_connected(struct async_req *req)
1571 {
1572         int *pfd = (int *)req->async.priv;
1573         int fd;
1574         NTSTATUS status;
1575
1576         status = open_socket_out_defer_recv(req, &fd);
1577         if (NT_STATUS_IS_OK(status)) {
1578                 *pfd = fd;
1579         }
1580 }
1581
1582 static NTSTATUS open_smb_socket(const struct sockaddr_storage *pss,
1583                                 uint16_t *port, int timeout, int *pfd)
1584 {
1585         struct event_context *ev;
1586         struct async_req *r139, *r445;
1587         int fd139 = -1;
1588         int fd445 = -1;
1589         NTSTATUS status;
1590
1591         if (*port != 0) {
1592                 return open_socket_out(pss, *port, timeout, pfd);
1593         }
1594
1595         ev = event_context_init(talloc_tos());
1596         if (ev == NULL) {
1597                 return NT_STATUS_NO_MEMORY;
1598         }
1599
1600         r445 = open_socket_out_defer_send(ev, ev, timeval_set(0, 0),
1601                                           pss, 445, timeout);
1602         r139 = open_socket_out_defer_send(ev, ev, timeval_set(0, 3000),
1603                                           pss, 139, timeout);
1604         if ((r445 == NULL) || (r139 == NULL)) {
1605                 status = NT_STATUS_NO_MEMORY;
1606                 goto done;
1607         }
1608         r445->async.fn = smb_sock_connected;
1609         r445->async.priv = &fd445;
1610         r139->async.fn = smb_sock_connected;
1611         r139->async.priv = &fd139;
1612
1613         while ((fd139 == -1) && (r139->state < ASYNC_REQ_DONE)
1614                && (fd445 == -1) && (r445->state < ASYNC_REQ_DONE)) {
1615                 event_loop_once(ev);
1616         }
1617
1618         if ((fd139 != -1) && (fd445 != -1)) {
1619                 close(fd139);
1620                 fd139 = -1;
1621         }
1622
1623         if (fd445 != -1) {
1624                 *port = 445;
1625                 *pfd = fd445;
1626                 status = NT_STATUS_OK;
1627                 goto done;
1628         }
1629         if (fd139 != -1) {
1630                 *port = 139;
1631                 *pfd = fd139;
1632                 status = NT_STATUS_OK;
1633                 goto done;
1634         }
1635
1636         status = open_socket_out_defer_recv(r445, &fd445);
1637  done:
1638         TALLOC_FREE(ev);
1639         return status;
1640 }
1641
1642 /****************************************************************************
1643  Open the client sockets.
1644 ****************************************************************************/
1645
1646 NTSTATUS cli_connect(struct cli_state *cli,
1647                 const char *host,
1648                 struct sockaddr_storage *dest_ss)
1649
1650 {
1651         int name_type = 0x20;
1652         TALLOC_CTX *frame = talloc_stackframe();
1653         unsigned int num_addrs = 0;
1654         unsigned int i = 0;
1655         struct sockaddr_storage *ss_arr = NULL;
1656         char *p = NULL;
1657
1658         /* reasonable default hostname */
1659         if (!host) {
1660                 host = STAR_SMBSERVER;
1661         }
1662
1663         fstrcpy(cli->desthost, host);
1664
1665         /* allow hostnames of the form NAME#xx and do a netbios lookup */
1666         if ((p = strchr(cli->desthost, '#'))) {
1667                 name_type = strtol(p+1, NULL, 16);
1668                 *p = 0;
1669         }
1670
1671         if (!dest_ss || is_zero_addr((struct sockaddr *)dest_ss)) {
1672                 NTSTATUS status =resolve_name_list(frame,
1673                                         cli->desthost,
1674                                         name_type,
1675                                         &ss_arr,
1676                                         &num_addrs);
1677                 if (!NT_STATUS_IS_OK(status)) {
1678                         TALLOC_FREE(frame);
1679                         return NT_STATUS_BAD_NETWORK_NAME;
1680                 }
1681         } else {
1682                 num_addrs = 1;
1683                 ss_arr = TALLOC_P(frame, struct sockaddr_storage);
1684                 if (!ss_arr) {
1685                         TALLOC_FREE(frame);
1686                         return NT_STATUS_NO_MEMORY;
1687                 }
1688                 *ss_arr = *dest_ss;
1689         }
1690
1691         for (i = 0; i < num_addrs; i++) {
1692                 cli->dest_ss = ss_arr[i];
1693                 if (getenv("LIBSMB_PROG")) {
1694                         cli->fd = sock_exec(getenv("LIBSMB_PROG"));
1695                 } else {
1696                         uint16_t port = cli->port;
1697                         NTSTATUS status;
1698                         status = open_smb_socket(&cli->dest_ss, &port,
1699                                                  cli->timeout, &cli->fd);
1700                         if (NT_STATUS_IS_OK(status)) {
1701                                 cli->port = port;
1702                         }
1703                 }
1704                 if (cli->fd == -1) {
1705                         char addr[INET6_ADDRSTRLEN];
1706                         print_sockaddr(addr, sizeof(addr), &ss_arr[i]);
1707                         DEBUG(2,("Error connecting to %s (%s)\n",
1708                                  dest_ss?addr:host,strerror(errno)));
1709                 } else {
1710                         /* Exit from loop on first connection. */
1711                         break;
1712                 }
1713         }
1714
1715         if (cli->fd == -1) {
1716                 TALLOC_FREE(frame);
1717                 return map_nt_error_from_unix(errno);
1718         }
1719
1720         if (dest_ss) {
1721                 *dest_ss = cli->dest_ss;
1722         }
1723
1724         set_socket_options(cli->fd, lp_socket_options());
1725
1726         TALLOC_FREE(frame);
1727         return NT_STATUS_OK;
1728 }
1729
1730 /**
1731    establishes a connection to after the negprot.
1732    @param output_cli A fully initialised cli structure, non-null only on success
1733    @param dest_host The netbios name of the remote host
1734    @param dest_ss (optional) The the destination IP, NULL for name based lookup
1735    @param port (optional) The destination port (0 for default)
1736    @param retry bool. Did this connection fail with a retryable error ?
1737
1738 */
1739 NTSTATUS cli_start_connection(struct cli_state **output_cli,
1740                               const char *my_name,
1741                               const char *dest_host,
1742                               struct sockaddr_storage *dest_ss, int port,
1743                               int signing_state, int flags,
1744                               bool *retry)
1745 {
1746         NTSTATUS nt_status;
1747         struct nmb_name calling;
1748         struct nmb_name called;
1749         struct cli_state *cli;
1750         struct sockaddr_storage ss;
1751
1752         if (retry)
1753                 *retry = False;
1754
1755         if (!my_name)
1756                 my_name = global_myname();
1757
1758         if (!(cli = cli_initialise())) {
1759                 return NT_STATUS_NO_MEMORY;
1760         }
1761
1762         make_nmb_name(&calling, my_name, 0x0);
1763         make_nmb_name(&called , dest_host, 0x20);
1764
1765         cli_set_port(cli, port);
1766         cli_set_timeout(cli, 10000); /* 10 seconds. */
1767
1768         if (dest_ss) {
1769                 ss = *dest_ss;
1770         } else {
1771                 zero_sockaddr(&ss);
1772         }
1773
1774 again:
1775
1776         DEBUG(3,("Connecting to host=%s\n", dest_host));
1777
1778         nt_status = cli_connect(cli, dest_host, &ss);
1779         if (!NT_STATUS_IS_OK(nt_status)) {
1780                 char addr[INET6_ADDRSTRLEN];
1781                 print_sockaddr(addr, sizeof(addr), &ss);
1782                 DEBUG(1,("cli_start_connection: failed to connect to %s (%s). Error %s\n",
1783                          nmb_namestr(&called), addr, nt_errstr(nt_status) ));
1784                 cli_shutdown(cli);
1785                 return nt_status;
1786         }
1787
1788         if (retry)
1789                 *retry = True;
1790
1791         if (!cli_session_request(cli, &calling, &called)) {
1792                 char *p;
1793                 DEBUG(1,("session request to %s failed (%s)\n",
1794                          called.name, cli_errstr(cli)));
1795                 if ((p=strchr(called.name, '.')) && !is_ipaddress(called.name)) {
1796                         *p = 0;
1797                         goto again;
1798                 }
1799                 if (strcmp(called.name, STAR_SMBSERVER)) {
1800                         make_nmb_name(&called , STAR_SMBSERVER, 0x20);
1801                         goto again;
1802                 }
1803                 return NT_STATUS_BAD_NETWORK_NAME;
1804         }
1805
1806         cli_setup_signing_state(cli, signing_state);
1807
1808         if (flags & CLI_FULL_CONNECTION_DONT_SPNEGO)
1809                 cli->use_spnego = False;
1810         else if (flags & CLI_FULL_CONNECTION_USE_KERBEROS)
1811                 cli->use_kerberos = True;
1812
1813         if ((flags & CLI_FULL_CONNECTION_FALLBACK_AFTER_KERBEROS) &&
1814              cli->use_kerberos) {
1815                 cli->fallback_after_kerberos = true;
1816         }
1817
1818         nt_status = cli_negprot(cli);
1819         if (!NT_STATUS_IS_OK(nt_status)) {
1820                 DEBUG(1, ("failed negprot: %s\n", nt_errstr(nt_status)));
1821                 cli_shutdown(cli);
1822                 return nt_status;
1823         }
1824
1825         *output_cli = cli;
1826         return NT_STATUS_OK;
1827 }
1828
1829
1830 /**
1831    establishes a connection right up to doing tconX, password specified.
1832    @param output_cli A fully initialised cli structure, non-null only on success
1833    @param dest_host The netbios name of the remote host
1834    @param dest_ip (optional) The the destination IP, NULL for name based lookup
1835    @param port (optional) The destination port (0 for default)
1836    @param service (optional) The share to make the connection to.  Should be 'unqualified' in any way.
1837    @param service_type The 'type' of serivice.
1838    @param user Username, unix string
1839    @param domain User's domain
1840    @param password User's password, unencrypted unix string.
1841    @param retry bool. Did this connection fail with a retryable error ?
1842 */
1843
1844 NTSTATUS cli_full_connection(struct cli_state **output_cli,
1845                              const char *my_name,
1846                              const char *dest_host,
1847                              struct sockaddr_storage *dest_ss, int port,
1848                              const char *service, const char *service_type,
1849                              const char *user, const char *domain,
1850                              const char *password, int flags,
1851                              int signing_state,
1852                              bool *retry)
1853 {
1854         NTSTATUS nt_status;
1855         struct cli_state *cli = NULL;
1856         int pw_len = password ? strlen(password)+1 : 0;
1857
1858         *output_cli = NULL;
1859
1860         if (password == NULL) {
1861                 password = "";
1862         }
1863
1864         nt_status = cli_start_connection(&cli, my_name, dest_host,
1865                                          dest_ss, port, signing_state,
1866                                          flags, retry);
1867
1868         if (!NT_STATUS_IS_OK(nt_status)) {
1869                 return nt_status;
1870         }
1871
1872         nt_status = cli_session_setup(cli, user, password, pw_len, password,
1873                                       pw_len, domain);
1874         if (!NT_STATUS_IS_OK(nt_status)) {
1875
1876                 if (!(flags & CLI_FULL_CONNECTION_ANONYMOUS_FALLBACK)) {
1877                         DEBUG(1,("failed session setup with %s\n",
1878                                  nt_errstr(nt_status)));
1879                         cli_shutdown(cli);
1880                         return nt_status;
1881                 }
1882
1883                 nt_status = cli_session_setup(cli, "", "", 0, "", 0, domain);
1884                 if (!NT_STATUS_IS_OK(nt_status)) {
1885                         DEBUG(1,("anonymous failed session setup with %s\n",
1886                                  nt_errstr(nt_status)));
1887                         cli_shutdown(cli);
1888                         return nt_status;
1889                 }
1890         }
1891
1892         if (service) {
1893                 if (!cli_send_tconX(cli, service, service_type, password, pw_len)) {
1894                         nt_status = cli_nt_error(cli);
1895                         DEBUG(1,("failed tcon_X with %s\n", nt_errstr(nt_status)));
1896                         cli_shutdown(cli);
1897                         if (NT_STATUS_IS_OK(nt_status)) {
1898                                 nt_status = NT_STATUS_UNSUCCESSFUL;
1899                         }
1900                         return nt_status;
1901                 }
1902         }
1903
1904         cli_init_creds(cli, user, domain, password);
1905
1906         *output_cli = cli;
1907         return NT_STATUS_OK;
1908 }
1909
1910 /****************************************************************************
1911  Attempt a NetBIOS session request, falling back to *SMBSERVER if needed.
1912 ****************************************************************************/
1913
1914 bool attempt_netbios_session_request(struct cli_state **ppcli, const char *srchost, const char *desthost,
1915                                      struct sockaddr_storage *pdest_ss)
1916 {
1917         struct nmb_name calling, called;
1918
1919         make_nmb_name(&calling, srchost, 0x0);
1920
1921         /*
1922          * If the called name is an IP address
1923          * then use *SMBSERVER immediately.
1924          */
1925
1926         if(is_ipaddress(desthost)) {
1927                 make_nmb_name(&called, STAR_SMBSERVER, 0x20);
1928         } else {
1929                 make_nmb_name(&called, desthost, 0x20);
1930         }
1931
1932         if (!cli_session_request(*ppcli, &calling, &called)) {
1933                 NTSTATUS status;
1934                 struct nmb_name smbservername;
1935
1936                 make_nmb_name(&smbservername, STAR_SMBSERVER, 0x20);
1937
1938                 /*
1939                  * If the name wasn't *SMBSERVER then
1940                  * try with *SMBSERVER if the first name fails.
1941                  */
1942
1943                 if (nmb_name_equal(&called, &smbservername)) {
1944
1945                         /*
1946                          * The name used was *SMBSERVER, don't bother with another name.
1947                          */
1948
1949                         DEBUG(0,("attempt_netbios_session_request: %s rejected the session for name *SMBSERVER \
1950 with error %s.\n", desthost, cli_errstr(*ppcli) ));
1951                         return False;
1952                 }
1953
1954                 /* Try again... */
1955                 cli_shutdown(*ppcli);
1956
1957                 *ppcli = cli_initialise();
1958                 if (!*ppcli) {
1959                         /* Out of memory... */
1960                         return False;
1961                 }
1962
1963                 status = cli_connect(*ppcli, desthost, pdest_ss);
1964                 if (!NT_STATUS_IS_OK(status) ||
1965                                 !cli_session_request(*ppcli, &calling, &smbservername)) {
1966                         DEBUG(0,("attempt_netbios_session_request: %s rejected the session for \
1967 name *SMBSERVER with error %s\n", desthost, cli_errstr(*ppcli) ));
1968                         return False;
1969                 }
1970         }
1971
1972         return True;
1973 }
1974
1975 /****************************************************************************
1976  Send an old style tcon.
1977 ****************************************************************************/
1978 NTSTATUS cli_raw_tcon(struct cli_state *cli,
1979                       const char *service, const char *pass, const char *dev,
1980                       uint16 *max_xmit, uint16 *tid)
1981 {
1982         char *p;
1983
1984         if (!lp_client_plaintext_auth() && (*pass)) {
1985                 DEBUG(1, ("Server requested plaintext password but 'client "
1986                           "plaintext auth' is disabled\n"));
1987                 return NT_STATUS_ACCESS_DENIED;
1988         }
1989
1990         memset(cli->outbuf,'\0',smb_size);
1991         memset(cli->inbuf,'\0',smb_size);
1992
1993         cli_set_message(cli->outbuf, 0, 0, True);
1994         SCVAL(cli->outbuf,smb_com,SMBtcon);
1995         cli_setup_packet(cli);
1996
1997         p = smb_buf(cli->outbuf);
1998         *p++ = 4; p += clistr_push(cli, p, service, -1, STR_TERMINATE | STR_NOALIGN);
1999         *p++ = 4; p += clistr_push(cli, p, pass, -1, STR_TERMINATE | STR_NOALIGN);
2000         *p++ = 4; p += clistr_push(cli, p, dev, -1, STR_TERMINATE | STR_NOALIGN);
2001
2002         cli_setup_bcc(cli, p);
2003
2004         cli_send_smb(cli);
2005         if (!cli_receive_smb(cli)) {
2006                 return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
2007         }
2008
2009         if (cli_is_error(cli)) {
2010                 return cli_nt_error(cli);
2011         }
2012
2013         *max_xmit = SVAL(cli->inbuf, smb_vwv0);
2014         *tid = SVAL(cli->inbuf, smb_vwv1);
2015
2016         return NT_STATUS_OK;
2017 }
2018
2019 /* Return a cli_state pointing at the IPC$ share for the given server */
2020
2021 struct cli_state *get_ipc_connect(char *server,
2022                                 struct sockaddr_storage *server_ss,
2023                                 const struct user_auth_info *user_info)
2024 {
2025         struct cli_state *cli;
2026         NTSTATUS nt_status;
2027         uint32_t flags = CLI_FULL_CONNECTION_ANONYMOUS_FALLBACK;
2028
2029         if (user_info->use_kerberos) {
2030                 flags |= CLI_FULL_CONNECTION_USE_KERBEROS;
2031         }
2032
2033         nt_status = cli_full_connection(&cli, NULL, server, server_ss, 0, "IPC$", "IPC",
2034                                         user_info->username ? user_info->username : "",
2035                                         lp_workgroup(),
2036                                         user_info->password ? user_info->password : "",
2037                                         flags,
2038                                         Undefined, NULL);
2039
2040         if (NT_STATUS_IS_OK(nt_status)) {
2041                 return cli;
2042         } else if (is_ipaddress(server)) {
2043             /* windows 9* needs a correct NMB name for connections */
2044             fstring remote_name;
2045
2046             if (name_status_find("*", 0, 0, server_ss, remote_name)) {
2047                 cli = get_ipc_connect(remote_name, server_ss, user_info);
2048                 if (cli)
2049                     return cli;
2050             }
2051         }
2052         return NULL;
2053 }
2054
2055 /*
2056  * Given the IP address of a master browser on the network, return its
2057  * workgroup and connect to it.
2058  *
2059  * This function is provided to allow additional processing beyond what
2060  * get_ipc_connect_master_ip_bcast() does, e.g. to retrieve the list of master
2061  * browsers and obtain each master browsers' list of domains (in case the
2062  * first master browser is recently on the network and has not yet
2063  * synchronized with other master browsers and therefore does not yet have the
2064  * entire network browse list)
2065  */
2066
2067 struct cli_state *get_ipc_connect_master_ip(TALLOC_CTX *ctx,
2068                                 struct ip_service *mb_ip,
2069                                 const struct user_auth_info *user_info,
2070                                 char **pp_workgroup_out)
2071 {
2072         char addr[INET6_ADDRSTRLEN];
2073         fstring name;
2074         struct cli_state *cli;
2075         struct sockaddr_storage server_ss;
2076
2077         *pp_workgroup_out = NULL;
2078
2079         print_sockaddr(addr, sizeof(addr), &mb_ip->ss);
2080         DEBUG(99, ("Looking up name of master browser %s\n",
2081                    addr));
2082
2083         /*
2084          * Do a name status query to find out the name of the master browser.
2085          * We use <01><02>__MSBROWSE__<02>#01 if *#00 fails because a domain
2086          * master browser will not respond to a wildcard query (or, at least,
2087          * an NT4 server acting as the domain master browser will not).
2088          *
2089          * We might be able to use ONLY the query on MSBROWSE, but that's not
2090          * yet been tested with all Windows versions, so until it is, leave
2091          * the original wildcard query as the first choice and fall back to
2092          * MSBROWSE if the wildcard query fails.
2093          */
2094         if (!name_status_find("*", 0, 0x1d, &mb_ip->ss, name) &&
2095             !name_status_find(MSBROWSE, 1, 0x1d, &mb_ip->ss, name)) {
2096
2097                 DEBUG(99, ("Could not retrieve name status for %s\n",
2098                            addr));
2099                 return NULL;
2100         }
2101
2102         if (!find_master_ip(name, &server_ss)) {
2103                 DEBUG(99, ("Could not find master ip for %s\n", name));
2104                 return NULL;
2105         }
2106
2107         *pp_workgroup_out = talloc_strdup(ctx, name);
2108
2109         DEBUG(4, ("found master browser %s, %s\n", name, addr));
2110
2111         print_sockaddr(addr, sizeof(addr), &server_ss);
2112         cli = get_ipc_connect(addr, &server_ss, user_info);
2113
2114         return cli;
2115 }
2116
2117 /*
2118  * Return the IP address and workgroup of a master browser on the network, and
2119  * connect to it.
2120  */
2121
2122 struct cli_state *get_ipc_connect_master_ip_bcast(TALLOC_CTX *ctx,
2123                                         const struct user_auth_info *user_info,
2124                                         char **pp_workgroup_out)
2125 {
2126         struct ip_service *ip_list;
2127         struct cli_state *cli;
2128         int i, count;
2129
2130         *pp_workgroup_out = NULL;
2131
2132         DEBUG(99, ("Do broadcast lookup for workgroups on local network\n"));
2133
2134         /* Go looking for workgroups by broadcasting on the local network */
2135
2136         if (!NT_STATUS_IS_OK(name_resolve_bcast(MSBROWSE, 1, &ip_list,
2137                                                 &count))) {
2138                 DEBUG(99, ("No master browsers responded\n"));
2139                 return False;
2140         }
2141
2142         for (i = 0; i < count; i++) {
2143                 char addr[INET6_ADDRSTRLEN];
2144                 print_sockaddr(addr, sizeof(addr), &ip_list[i].ss);
2145                 DEBUG(99, ("Found master browser %s\n", addr));
2146
2147                 cli = get_ipc_connect_master_ip(ctx, &ip_list[i],
2148                                 user_info, pp_workgroup_out);
2149                 if (cli)
2150                         return(cli);
2151         }
2152
2153         return NULL;
2154 }