source4/auth/credentials/credentials.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    User credentials handling
   5
   6    Copyright (C) Jelmer Vernooij 2005
   7    Copyright (C) Tim Potter 2001
   8    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 3 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22 */
  23
  24 #include "includes.h"
  25 #include "librpc/gen_ndr/samr.h" /* for struct samrPassword */
  26 #include "auth/credentials/credentials.h"
  27 #include "auth/credentials/credentials_krb5.h"
  28 #include "libcli/auth/libcli_auth.h"
  29 #include "lib/events/events.h"
  30 #include "param/param.h"
  31
  32 /**
  33  * Create a new credentials structure
  34  * @param mem_ctx TALLOC_CTX parent for credentials structure
  35  */
  36 struct cli_credentials *cli_credentials_init(TALLOC_CTX *mem_ctx)
  37 {
  38         struct cli_credentials *cred = talloc(mem_ctx, struct cli_credentials);
  39         if (!cred) {
  40                 return cred;
  41         }
  42
  43         cred->netlogon_creds = NULL;
  44         cred->machine_account_pending = False;
  45         cred->workstation_obtained = CRED_UNINITIALISED;
  46         cred->username_obtained = CRED_UNINITIALISED;
  47         cred->password_obtained = CRED_UNINITIALISED;
  48         cred->domain_obtained = CRED_UNINITIALISED;
  49         cred->realm_obtained = CRED_UNINITIALISED;
  50         cred->ccache_obtained = CRED_UNINITIALISED;
  51         cred->client_gss_creds_obtained = CRED_UNINITIALISED;
  52         cred->server_gss_creds_obtained = CRED_UNINITIALISED;
  53         cred->keytab_obtained = CRED_UNINITIALISED;
  54         cred->principal_obtained = CRED_UNINITIALISED;
  55
  56         cred->ccache_threshold = CRED_UNINITIALISED;
  57         cred->client_gss_creds_threshold = CRED_UNINITIALISED;
  58
  59         cred->old_password = NULL;
  60         cred->smb_krb5_context = NULL;
  61         cred->salt_principal = NULL;
  62         cred->machine_account = False;
  63
  64         cred->bind_dn = NULL;
  65
  66         cred->tries = 3;
  67         cred->callback_running = False;
  68         cred->ev = NULL;
  69
  70         cli_credentials_set_kerberos_state(cred, CRED_AUTO_USE_KERBEROS);
  71         cli_credentials_set_gensec_features(cred, 0);
  72
  73         return cred;
  74 }
  75
  76 /**
  77  * Create a new anonymous credential
  78  * @param mem_ctx TALLOC_CTX parent for credentials structure
  79  */
  80 struct cli_credentials *cli_credentials_init_anon(TALLOC_CTX *mem_ctx)
  81 {
  82         struct cli_credentials *anon_credentials;
  83
  84         anon_credentials = cli_credentials_init(mem_ctx);
  85         cli_credentials_set_conf(anon_credentials, global_loadparm);
  86         cli_credentials_set_anonymous(anon_credentials);
  87
  88         return anon_credentials;
  89 }
  90
  91 void cli_credentials_set_kerberos_state(struct cli_credentials *creds,
  92                                         enum credentials_use_kerberos use_kerberos)
  93 {
  94         creds->use_kerberos = use_kerberos;
  95 }
  96
  97 enum credentials_use_kerberos cli_credentials_get_kerberos_state(struct cli_credentials *creds)
  98 {
  99         return creds->use_kerberos;
 100 }
 101
 102 void cli_credentials_set_gensec_features(struct cli_credentials *creds, uint32_t gensec_features)
 103 {
 104         creds->gensec_features = gensec_features;
 105 }
 106
 107 uint32_t cli_credentials_get_gensec_features(struct cli_credentials *creds)
 108 {
 109         return creds->gensec_features;
 110 }
 111
 112
 113 /**
 114  * Obtain the username for this credentials context.
 115  * @param cred credentials context
 116  * @retval The username set on this context.
 117  * @note Return value will never be NULL except by programmer error.
 118  */
 119 const char *cli_credentials_get_username(struct cli_credentials *cred)
 120 {
 121         if (cred->machine_account_pending) {
 122                 cli_credentials_set_machine_account(cred);
 123         }
 124
 125         if (cred->username_obtained == CRED_CALLBACK &&
 126             !cred->callback_running) {
 127                 cred->callback_running = True;
 128                 cred->username = cred->username_cb(cred);
 129                 cred->callback_running = False;
 130                 cred->username_obtained = CRED_SPECIFIED;
 131                 cli_credentials_invalidate_ccache(cred, cred->username_obtained);
 132         }
 133
 134         return cred->username;
 135 }
 136
 137 BOOL cli_credentials_set_username(struct cli_credentials *cred,
 138                                   const char *val, enum credentials_obtained obtained)
 139 {
 140         if (obtained >= cred->username_obtained) {
 141                 cred->username = talloc_strdup(cred, val);
 142                 cred->username_obtained = obtained;
 143                 cli_credentials_invalidate_ccache(cred, cred->username_obtained);
 144                 return True;
 145         }
 146
 147         return False;
 148 }
 149
 150 BOOL cli_credentials_set_username_callback(struct cli_credentials *cred,
 151                                   const char *(*username_cb) (struct cli_credentials *))
 152 {
 153         if (cred->username_obtained < CRED_CALLBACK) {
 154                 cred->username_cb = username_cb;
 155                 cred->username_obtained = CRED_CALLBACK;
 156                 return True;
 157         }
 158
 159         return False;
 160 }
 161
 162 BOOL cli_credentials_set_bind_dn(struct cli_credentials *cred,
 163                                  const char *bind_dn)
 164 {
 165         cred->bind_dn = talloc_strdup(cred, bind_dn);
 166         return True;
 167 }
 168
 169 /**
 170  * Obtain the BIND DN for this credentials context.
 171  * @param cred credentials context
 172  * @retval The username set on this context.
 173  * @note Return value will be NULL if not specified explictly
 174  */
 175 const char *cli_credentials_get_bind_dn(struct cli_credentials *cred)
 176 {
 177         return cred->bind_dn;
 178 }
 179
 180
 181 /**
 182  * Obtain the client principal for this credentials context.
 183  * @param cred credentials context
 184  * @retval The username set on this context.
 185  * @note Return value will never be NULL except by programmer error.
 186  */
 187 const char *cli_credentials_get_principal(struct cli_credentials *cred, TALLOC_CTX *mem_ctx)
 188 {
 189         if (cred->machine_account_pending) {
 190                 cli_credentials_set_machine_account(cred);
 191         }
 192
 193         if (cred->principal_obtained == CRED_CALLBACK &&
 194             !cred->callback_running) {
 195                 cred->callback_running = True;
 196                 cred->principal = cred->principal_cb(cred);
 197                 cred->callback_running = False;
 198                 cred->principal_obtained = CRED_SPECIFIED;
 199                 cli_credentials_invalidate_ccache(cred, cred->principal_obtained);
 200         }
 201
 202         if (cred->principal_obtained < cred->username_obtained) {
 203                 if (cred->domain_obtained > cred->realm_obtained) {
 204                         return talloc_asprintf(mem_ctx, "%s@%s",
 205                                                cli_credentials_get_username(cred),
 206                                                cli_credentials_get_domain(cred));
 207                 } else {
 208                         return talloc_asprintf(mem_ctx, "%s@%s",
 209                                                cli_credentials_get_username(cred),
 210                                                cli_credentials_get_realm(cred));
 211                 }
 212         }
 213         return talloc_reference(mem_ctx, cred->principal);
 214 }
 215
 216 BOOL cli_credentials_set_principal(struct cli_credentials *cred,
 217                                    const char *val,
 218                                    enum credentials_obtained obtained)
 219 {
 220         if (obtained >= cred->principal_obtained) {
 221                 cred->principal = talloc_strdup(cred, val);
 222                 cred->principal_obtained = obtained;
 223                 cli_credentials_invalidate_ccache(cred, cred->principal_obtained);
 224                 return True;
 225         }
 226
 227         return False;
 228 }
 229
 230 /* Set a callback to get the principal.  This could be a popup dialog,
 231  * a terminal prompt or similar.  */
 232
 233 BOOL cli_credentials_set_principal_callback(struct cli_credentials *cred,
 234                                   const char *(*principal_cb) (struct cli_credentials *))
 235 {
 236         if (cred->principal_obtained < CRED_CALLBACK) {
 237                 cred->principal_cb = principal_cb;
 238                 cred->principal_obtained = CRED_CALLBACK;
 239                 return True;
 240         }
 241
 242         return False;
 243 }
 244
 245 /* Some of our tools are 'anonymous by default'.  This is a single
 246  * function to determine if authentication has been explicitly
 247  * requested */
 248
 249 BOOL cli_credentials_authentication_requested(struct cli_credentials *cred)
 250 {
 251         if (cred->bind_dn) {
 252                 return True;
 253         }
 254
 255         if (cli_credentials_is_anonymous(cred)){
 256                 return False;
 257         }
 258
 259         if (cred->principal_obtained >= CRED_SPECIFIED) {
 260                 return True;
 261         }
 262         if (cred->username_obtained >= CRED_SPECIFIED) {
 263                 return True;
 264         }
 265
 266         if (cli_credentials_get_kerberos_state(cred) == CRED_MUST_USE_KERBEROS) {
 267                 return True;
 268         }
 269
 270         return False;
 271 }
 272
 273 /**
 274  * Obtain the password for this credentials context.
 275  * @param cred credentials context
 276  * @retval If set, the cleartext password, otherwise NULL
 277  */
 278 const char *cli_credentials_get_password(struct cli_credentials *cred)
 279 {
 280         if (cred->machine_account_pending) {
 281                 cli_credentials_set_machine_account(cred);
 282         }
 283
 284         if (cred->password_obtained == CRED_CALLBACK &&
 285             !cred->callback_running) {
 286                 cred->callback_running = True;
 287                 cred->password = cred->password_cb(cred);
 288                 cred->callback_running = False;
 289                 cred->password_obtained = CRED_CALLBACK_RESULT;
 290                 cli_credentials_invalidate_ccache(cred, cred->password_obtained);
 291         }
 292
 293         return cred->password;
 294 }
 295
 296 /* Set a password on the credentials context, including an indication
 297  * of 'how' the password was obtained */
 298
 299 BOOL cli_credentials_set_password(struct cli_credentials *cred,
 300                                   const char *val,
 301                                   enum credentials_obtained obtained)
 302 {
 303         if (obtained >= cred->password_obtained) {
 304                 cred->password = talloc_strdup(cred, val);
 305                 cred->password_obtained = obtained;
 306                 cli_credentials_invalidate_ccache(cred, cred->password_obtained);
 307
 308                 cred->nt_hash = NULL;
 309                 return True;
 310         }
 311
 312         return False;
 313 }
 314
 315 BOOL cli_credentials_set_password_callback(struct cli_credentials *cred,
 316                                            const char *(*password_cb) (struct cli_credentials *))
 317 {
 318         if (cred->password_obtained < CRED_CALLBACK) {
 319                 cred->password_cb = password_cb;
 320                 cred->password_obtained = CRED_CALLBACK;
 321                 cli_credentials_invalidate_ccache(cred, cred->password_obtained);
 322                 return True;
 323         }
 324
 325         return False;
 326 }
 327
 328 /**
 329  * Obtain the 'old' password for this credentials context (used for join accounts).
 330  * @param cred credentials context
 331  * @retval If set, the cleartext password, otherwise NULL
 332  */
 333 const char *cli_credentials_get_old_password(struct cli_credentials *cred)
 334 {
 335         if (cred->machine_account_pending) {
 336                 cli_credentials_set_machine_account(cred);
 337         }
 338
 339         return cred->old_password;
 340 }
 341
 342 BOOL cli_credentials_set_old_password(struct cli_credentials *cred,
 343                                       const char *val,
 344                                       enum credentials_obtained obtained)
 345 {
 346         cred->old_password = talloc_strdup(cred, val);
 347         return True;
 348 }
 349
 350 /**
 351  * Obtain the password, in the form MD4(unicode(password)) for this credentials context.
 352  *
 353  * Sometimes we only have this much of the password, while the rest of
 354  * the time this call avoids calling E_md4hash themselves.
 355  *
 356  * @param cred credentials context
 357  * @retval If set, the cleartext password, otherwise NULL
 358  */
 359 const struct samr_Password *cli_credentials_get_nt_hash(struct cli_credentials *cred,
 360                                                         TALLOC_CTX *mem_ctx)
 361 {
 362         const char *password = cli_credentials_get_password(cred);
 363
 364         if (password) {
 365                 struct samr_Password *nt_hash = talloc(mem_ctx, struct samr_Password);
 366                 if (!nt_hash) {
 367                         return NULL;
 368                 }
 369
 370                 E_md4hash(password, nt_hash->hash);
 371
 372                 return nt_hash;
 373         } else {
 374                 return cred->nt_hash;
 375         }
 376 }
 377
 378 BOOL cli_credentials_set_nt_hash(struct cli_credentials *cred,
 379                                  const struct samr_Password *nt_hash,
 380                                  enum credentials_obtained obtained)
 381 {
 382         if (obtained >= cred->password_obtained) {
 383                 cli_credentials_set_password(cred, NULL, obtained);
 384                 if (nt_hash) {
 385                         cred->nt_hash = talloc(cred, struct samr_Password);
 386                         *cred->nt_hash = *nt_hash;
 387                 } else {
 388                         cred->nt_hash = NULL;
 389                 }
 390                 return True;
 391         }
 392
 393         return False;
 394 }
 395
 396 /**
 397  * Obtain the 'short' or 'NetBIOS' domain for this credentials context.
 398  * @param cred credentials context
 399  * @retval The domain set on this context.
 400  * @note Return value will never be NULL except by programmer error.
 401  */
 402 const char *cli_credentials_get_domain(struct cli_credentials *cred)
 403 {
 404         if (cred->machine_account_pending) {
 405                 cli_credentials_set_machine_account(cred);
 406         }
 407
 408         if (cred->domain_obtained == CRED_CALLBACK &&
 409             !cred->callback_running) {
 410                 cred->callback_running = True;
 411                 cred->domain = cred->domain_cb(cred);
 412                 cred->callback_running = False;
 413                 cred->domain_obtained = CRED_SPECIFIED;
 414                 cli_credentials_invalidate_ccache(cred, cred->domain_obtained);
 415         }
 416
 417         return cred->domain;
 418 }
 419
 420
 421 BOOL cli_credentials_set_domain(struct cli_credentials *cred,
 422                                 const char *val,
 423                                 enum credentials_obtained obtained)
 424 {
 425         if (obtained >= cred->domain_obtained) {
 426                 /* it is important that the domain be in upper case,
 427                  * particularly for the sensitive NTLMv2
 428                  * calculations */
 429                 cred->domain = strupper_talloc(cred, val);
 430                 cred->domain_obtained = obtained;
 431                 cli_credentials_invalidate_ccache(cred, cred->domain_obtained);
 432                 return True;
 433         }
 434
 435         return False;
 436 }
 437
 438 BOOL cli_credentials_set_domain_callback(struct cli_credentials *cred,
 439                                          const char *(*domain_cb) (struct cli_credentials *))
 440 {
 441         if (cred->domain_obtained < CRED_CALLBACK) {
 442                 cred->domain_cb = domain_cb;
 443                 cred->domain_obtained = CRED_CALLBACK;
 444                 return True;
 445         }
 446
 447         return False;
 448 }
 449
 450 /**
 451  * Obtain the Kerberos realm for this credentials context.
 452  * @param cred credentials context
 453  * @retval The realm set on this context.
 454  * @note Return value will never be NULL except by programmer error.
 455  */
 456 const char *cli_credentials_get_realm(struct cli_credentials *cred)
 457 {
 458         if (cred->machine_account_pending) {
 459                 cli_credentials_set_machine_account(cred);
 460         }
 461
 462         if (cred->realm_obtained == CRED_CALLBACK &&
 463             !cred->callback_running) {
 464                 cred->callback_running = True;
 465                 cred->realm = cred->realm_cb(cred);
 466                 cred->callback_running = False;
 467                 cred->realm_obtained = CRED_SPECIFIED;
 468                 cli_credentials_invalidate_ccache(cred, cred->realm_obtained);
 469         }
 470
 471         return cred->realm;
 472 }
 473
 474 /**
 475  * Set the realm for this credentials context, and force it to
 476  * uppercase for the sainity of our local kerberos libraries
 477  */
 478 BOOL cli_credentials_set_realm(struct cli_credentials *cred,
 479                                const char *val,
 480                                enum credentials_obtained obtained)
 481 {
 482         if (obtained >= cred->realm_obtained) {
 483                 cred->realm = strupper_talloc(cred, val);
 484                 cred->realm_obtained = obtained;
 485                 cli_credentials_invalidate_ccache(cred, cred->realm_obtained);
 486                 return True;
 487         }
 488
 489         return False;
 490 }
 491
 492 BOOL cli_credentials_set_realm_callback(struct cli_credentials *cred,
 493                                         const char *(*realm_cb) (struct cli_credentials *))
 494 {
 495         if (cred->realm_obtained < CRED_CALLBACK) {
 496                 cred->realm_cb = realm_cb;
 497                 cred->realm_obtained = CRED_CALLBACK;
 498                 return True;
 499         }
 500
 501         return False;
 502 }
 503
 504 /**
 505  * Obtain the 'short' or 'NetBIOS' workstation name for this credentials context.
 506  *
 507  * @param cred credentials context
 508  * @retval The workstation name set on this context.
 509  * @note Return value will never be NULL except by programmer error.
 510  */
 511 const char *cli_credentials_get_workstation(struct cli_credentials *cred)
 512 {
 513         if (cred->workstation_obtained == CRED_CALLBACK &&
 514             !cred->callback_running) {
 515                 cred->callback_running = True;
 516                 cred->workstation = cred->workstation_cb(cred);
 517                 cred->callback_running = False;
 518                 cred->workstation_obtained = CRED_SPECIFIED;
 519         }
 520
 521         return cred->workstation;
 522 }
 523
 524 BOOL cli_credentials_set_workstation(struct cli_credentials *cred,
 525                                      const char *val,
 526                                      enum credentials_obtained obtained)
 527 {
 528         if (obtained >= cred->workstation_obtained) {
 529                 cred->workstation = talloc_strdup(cred, val);
 530                 cred->workstation_obtained = obtained;
 531                 return True;
 532         }
 533
 534         return False;
 535 }
 536
 537 BOOL cli_credentials_set_workstation_callback(struct cli_credentials *cred,
 538                                               const char *(*workstation_cb) (struct cli_credentials *))
 539 {
 540         if (cred->workstation_obtained < CRED_CALLBACK) {
 541                 cred->workstation_cb = workstation_cb;
 542                 cred->workstation_obtained = CRED_CALLBACK;
 543                 return True;
 544         }
 545
 546         return False;
 547 }
 548
 549 /**
 550  * Given a string, typically obtained from a -U argument, parse it into domain, username, realm and password fields
 551  *
 552  * The format accepted is [domain\\]user[%password] or user[@realm][%password]
 553  *
 554  * @param credentials Credentials structure on which to set the password
 555  * @param data the string containing the username, password etc
 556  * @param obtained This enum describes how 'specified' this password is
 557  */
 558
 559 void cli_credentials_parse_string(struct cli_credentials *credentials, const char *data, enum credentials_obtained obtained)
 560 {
 561         char *uname, *p;
 562
 563         if (strcmp("%",data) == 0) {
 564                 cli_credentials_set_anonymous(credentials);
 565                 return;
 566         }
 567
 568         uname = talloc_strdup(credentials, data);
 569         if ((p = strchr_m(uname,'%'))) {
 570                 *p = 0;
 571                 cli_credentials_set_password(credentials, p+1, obtained);
 572         }
 573
 574         if ((p = strchr_m(uname,'@'))) {
 575                 cli_credentials_set_principal(credentials, uname, obtained);
 576                 *p = 0;
 577                 cli_credentials_set_realm(credentials, p+1, obtained);
 578                 return;
 579         } else if ((p = strchr_m(uname,'\\')) || (p = strchr_m(uname, '/'))) {
 580                 *p = 0;
 581                 cli_credentials_set_domain(credentials, uname, obtained);
 582                 uname = p+1;
 583         }
 584         cli_credentials_set_username(credentials, uname, obtained);
 585 }
 586
 587 /**
 588  * Given a a credentials structure, print it as a string
 589  *
 590  * The format output is [domain\\]user[%password] or user[@realm][%password]
 591  *
 592  * @param credentials Credentials structure on which to set the password
 593  * @param mem_ctx The memory context to place the result on
 594  */
 595
 596 const char *cli_credentials_get_unparsed_name(struct cli_credentials *credentials, TALLOC_CTX *mem_ctx)
 597 {
 598         const char *bind_dn = cli_credentials_get_bind_dn(credentials);
 599         const char *domain;
 600         const char *username;
 601         const char *name;
 602
 603         if (bind_dn) {
 604                 name = talloc_reference(mem_ctx, bind_dn);
 605         } else {
 606                 cli_credentials_get_ntlm_username_domain(credentials, mem_ctx, &username, &domain);
 607                 if (domain && domain[0]) {
 608                         name = talloc_asprintf(mem_ctx, "%s\\%s",
 609                                                domain, username);
 610                 } else {
 611                         name = talloc_asprintf(mem_ctx, "%s",
 612                                                username);
 613                 }
 614         }
 615         return name;
 616 }
 617
 618 /**
 619  * Specifies default values for domain, workstation and realm
 620  * from the smb.conf configuration file
 621  *
 622  * @param cred Credentials structure to fill in
 623  */
 624 void cli_credentials_set_conf(struct cli_credentials *cred,
 625                               struct loadparm_context *lp_ctx)
 626 {
 627         cli_credentials_set_username(cred, "", CRED_UNINITIALISED);
 628         cli_credentials_set_domain(cred, lp_workgroup(lp_ctx), CRED_UNINITIALISED);
 629         cli_credentials_set_workstation(cred, lp_netbios_name(lp_ctx), CRED_UNINITIALISED);
 630         cli_credentials_set_realm(cred, lp_realm(lp_ctx), CRED_UNINITIALISED);
 631 }
 632
 633 /**
 634  * Guess defaults for credentials from environment variables,
 635  * and from the configuration file
 636  *
 637  * @param cred Credentials structure to fill in
 638  */
 639 void cli_credentials_guess(struct cli_credentials *cred)
 640 {
 641         char *p;
 642
 643         cli_credentials_set_conf(cred, global_loadparm);
 644
 645         if (getenv("LOGNAME")) {
 646                 cli_credentials_set_username(cred, getenv("LOGNAME"), CRED_GUESS_ENV);
 647         }
 648
 649         if (getenv("USER")) {
 650                 cli_credentials_parse_string(cred, getenv("USER"), CRED_GUESS_ENV);
 651                 if ((p = strchr_m(getenv("USER"),'%'))) {
 652                         memset(p,0,strlen(cred->password));
 653                 }
 654         }
 655
 656         if (getenv("PASSWD")) {
 657                 cli_credentials_set_password(cred, getenv("PASSWD"), CRED_GUESS_ENV);
 658         }
 659
 660         if (getenv("PASSWD_FD")) {
 661                 cli_credentials_parse_password_fd(cred, atoi(getenv("PASSWD_FD")),
 662                                                   CRED_GUESS_FILE);
 663         }
 664
 665         p = getenv("PASSWD_FILE");
 666         if (p && p[0]) {
 667                 cli_credentials_parse_password_file(cred, p, CRED_GUESS_FILE);
 668         }
 669
 670         if (cli_credentials_get_kerberos_state(cred) != CRED_DONT_USE_KERBEROS) {
 671                 cli_credentials_set_ccache(cred, NULL, CRED_GUESS_FILE);
 672         }
 673 }
 674
 675 /**
 676  * Attach NETLOGON credentials for use with SCHANNEL
 677  */
 678
 679 void cli_credentials_set_netlogon_creds(struct cli_credentials *cred,
 680                                         struct creds_CredentialState *netlogon_creds)
 681 {
 682         cred->netlogon_creds = talloc_reference(cred, netlogon_creds);
 683 }
 684
 685 /**
 686  * Return attached NETLOGON credentials
 687  */
 688
 689 struct creds_CredentialState *cli_credentials_get_netlogon_creds(struct cli_credentials *cred)
 690 {
 691         return cred->netlogon_creds;
 692 }
 693
 694 /**
 695  * Set NETLOGON secure channel type
 696  */
 697
 698 void cli_credentials_set_secure_channel_type(struct cli_credentials *cred,
 699                                              enum netr_SchannelType secure_channel_type)
 700 {
 701         cred->secure_channel_type = secure_channel_type;
 702 }
 703
 704 /**
 705  * Return NETLOGON secure chanel type
 706  */
 707
 708 enum netr_SchannelType cli_credentials_get_secure_channel_type(struct cli_credentials *cred)
 709 {
 710         return cred->secure_channel_type;
 711 }
 712
 713 /**
 714  * Fill in a credentials structure as the anonymous user
 715  */
 716 void cli_credentials_set_anonymous(struct cli_credentials *cred)
 717 {
 718         cli_credentials_set_username(cred, "", CRED_SPECIFIED);
 719         cli_credentials_set_domain(cred, "", CRED_SPECIFIED);
 720         cli_credentials_set_password(cred, NULL, CRED_SPECIFIED);
 721 }
 722
 723 /**
 724  * Describe a credentials context as anonymous or authenticated
 725  * @retval True if anonymous, False if a username is specified
 726  */
 727
 728 BOOL cli_credentials_is_anonymous(struct cli_credentials *cred)
 729 {
 730         const char *username;
 731
 732         if (cred->machine_account_pending) {
 733                 cli_credentials_set_machine_account(cred);
 734         }
 735
 736         username = cli_credentials_get_username(cred);
 737
 738         /* Yes, it is deliberate that we die if we have a NULL pointer
 739          * here - anonymous is "", not NULL, which is 'never specified,
 740          * never guessed', ie programmer bug */
 741         if (!username[0]) {
 742                 return True;
 743         }
 744
 745         return False;
 746 }
 747
 748 /**
 749  * Mark the current password for a credentials struct as wrong. This will
 750  * cause the password to be prompted again (if a callback is set).
 751  *
 752  * This will decrement the number of times the password can be tried.
 753  *
 754  * @retval whether the credentials struct is finished
 755  */
 756 BOOL cli_credentials_wrong_password(struct cli_credentials *cred)
 757 {
 758         if (cred->password_obtained != CRED_CALLBACK_RESULT) {
 759                 return False;
 760         }
 761
 762         cred->password_obtained = CRED_CALLBACK;
 763
 764         cred->tries--;
 765
 766         return (cred->tries > 0);
 767 }
 768
 769 /*
 770   set the common event context for this set of credentials
 771  */
 772 void cli_credentials_set_event_context(struct cli_credentials *cred, struct event_context *ev)
 773 {
 774         cred->ev = ev;
 775 }
 776
 777 /*
 778   set the common event context for this set of credentials
 779  */
 780 struct event_context *cli_credentials_get_event_context(struct cli_credentials *cred)
 781 {
 782         if (cred->ev == NULL) {
 783                 cred->ev = event_context_find(cred);
 784         }
 785         return cred->ev;
 786 }