source/kdc/kpasswdd.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    kpasswd Server implementation
   5
   6    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
   7    Copyright (C) Andrew Tridgell        2005
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 */
  22
  23 #include "includes.h"
  24 #include "smbd/service_task.h"
  25 #include "lib/events/events.h"
  26 #include "lib/socket/socket.h"
  27 #include "kdc/kdc.h"
  28 #include "system/network.h"
  29 #include "lib/util/dlinklist.h"
  30 #include "lib/ldb/include/ldb.h"
  31 #include "heimdal/lib/krb5/krb5_locl.h"
  32 #include "heimdal/lib/krb5/krb5-private.h"
  33 #include "auth/gensec/gensec.h"
  34 #include "auth/credentials/credentials.h"
  35 #include "auth/credentials/credentials_krb5.h"
  36 #include "auth/auth.h"
  37 #include "dsdb/samdb/samdb.h"
  38 #include "rpc_server/dcerpc_server.h"
  39 #include "rpc_server/samr/proto.h"
  40 #include "libcli/security/security.h"
  41
  42 /* hold information about one kdc socket */
  43 struct kpasswd_socket {
  44         struct socket_context *sock;
  45         struct kdc_server *kdc;
  46         struct fd_event *fde;
  47
  48         /* a queue of outgoing replies that have been deferred */
  49         struct kdc_reply *send_queue;
  50 };
  51
  52 /* Return true if there is a valid error packet formed in the error_blob */
  53 static BOOL kpasswdd_make_error_reply(struct kdc_server *kdc,
  54                                      TALLOC_CTX *mem_ctx,
  55                                      uint16_t result_code,
  56                                      const char *error_string,
  57                                      DATA_BLOB *error_blob)
  58 {
  59         char *error_string_utf8;
  60         ssize_t len;
  61
  62         DEBUG(result_code ? 3 : 10, ("kpasswdd: %s\n", error_string));
  63
  64         len = push_utf8_talloc(mem_ctx, &error_string_utf8, error_string);
  65         if (len == -1) {
  66                 return False;
  67         }
  68
  69         *error_blob = data_blob_talloc(mem_ctx, NULL, 2 + len + 1);
  70         if (!error_blob->data) {
  71                 return False;
  72         }
  73         RSSVAL(error_blob->data, 0, result_code);
  74         memcpy(error_blob->data + 2, error_string_utf8, len + 1);
  75         return True;
  76 }
  77
  78 /* Return true if there is a valid error packet formed in the error_blob */
  79 static BOOL kpasswdd_make_unauth_error_reply(struct kdc_server *kdc,
  80                                             TALLOC_CTX *mem_ctx,
  81                                             uint16_t result_code,
  82                                             const char *error_string,
  83                                             DATA_BLOB *error_blob)
  84 {
  85         BOOL ret;
  86         int kret;
  87         DATA_BLOB error_bytes;
  88         krb5_data k5_error_bytes, k5_error_blob;
  89         ret = kpasswdd_make_error_reply(kdc, mem_ctx, result_code, error_string,
  90                                        &error_bytes);
  91         if (!ret) {
  92                 return False;
  93         }
  94         k5_error_bytes.data = error_bytes.data;
  95         k5_error_bytes.length = error_bytes.length;
  96         kret = krb5_mk_error(kdc->smb_krb5_context->krb5_context,
  97                              result_code, NULL, &k5_error_bytes,
  98                              NULL, NULL, NULL, NULL, &k5_error_blob);
  99         if (kret) {
 100                 return False;
 101         }
 102         *error_blob = data_blob_talloc(mem_ctx, k5_error_blob.data, k5_error_blob.length);
 103         krb5_data_free(&k5_error_blob);
 104         if (!error_blob->data) {
 105                 return False;
 106         }
 107         return True;
 108 }
 109
 110 static BOOL kpasswd_make_pwchange_reply(struct kdc_server *kdc,
 111                                         TALLOC_CTX *mem_ctx,
 112                                         NTSTATUS status,
 113                                         enum samr_RejectReason reject_reason,
 114                                         struct samr_DomInfo1 *dominfo,
 115                                         DATA_BLOB *error_blob)
 116 {
 117         if (NT_STATUS_EQUAL(status, NT_STATUS_NO_SUCH_USER)) {
 118                 return kpasswdd_make_error_reply(kdc, mem_ctx,
 119                                                 KRB5_KPASSWD_ACCESSDENIED,
 120                                                 "No such user when changing password",
 121                                                 error_blob);
 122         }
 123         if (NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED)) {
 124                 return kpasswdd_make_error_reply(kdc, mem_ctx,
 125                                                 KRB5_KPASSWD_ACCESSDENIED,
 126                                                 "Not permitted to change password",
 127                                                 error_blob);
 128         }
 129         if (dominfo && NT_STATUS_EQUAL(status, NT_STATUS_PASSWORD_RESTRICTION)) {
 130                 const char *reject_string;
 131                 switch (reject_reason) {
 132                 case SAMR_REJECT_TOO_SHORT:
 133                         reject_string = talloc_asprintf(mem_ctx, "Password too short, password must be at least %d characters long",
 134                                                         dominfo->min_password_length);
 135                         break;
 136                 case SAMR_REJECT_COMPLEXITY:
 137                         reject_string = "Password does not meet complexity requirements";
 138                         break;
 139                 case SAMR_REJECT_IN_HISTORY:
 140                         reject_string = "Password is already in password history";
 141                         break;
 142                 case SAMR_REJECT_OTHER:
 143                 default:
 144                         reject_string = talloc_asprintf(mem_ctx, "Password must be at least %d characters long, and cannot match any of your %d previous passwords",
 145                                                         dominfo->min_password_length, dominfo->password_history_length);
 146                         break;
 147                 }
 148                 return kpasswdd_make_error_reply(kdc, mem_ctx,
 149                                                 KRB5_KPASSWD_SOFTERROR,
 150                                                 reject_string,
 151                                                 error_blob);
 152         }
 153         if (!NT_STATUS_IS_OK(status)) {
 154                 return kpasswdd_make_error_reply(kdc, mem_ctx,
 155                                                  KRB5_KPASSWD_HARDERROR,
 156                                                  talloc_asprintf(mem_ctx, "failed to set password: %s", nt_errstr(status)),
 157                                                  error_blob);
 158
 159         }
 160         return kpasswdd_make_error_reply(kdc, mem_ctx, KRB5_KPASSWD_SUCCESS,
 161                                         "Password changed",
 162                                         error_blob);
 163 }
 164
 165 /*
 166    A user password change
 167
 168    Return true if there is a valid error packet (or sucess) formed in
 169    the error_blob
 170 */
 171 static BOOL kpasswdd_change_password(struct kdc_server *kdc,
 172                                      TALLOC_CTX *mem_ctx,
 173                                      struct auth_session_info *session_info,
 174                                      const char *password,
 175                                      DATA_BLOB *reply)
 176 {
 177         NTSTATUS status;
 178         enum samr_RejectReason reject_reason;
 179         struct samr_DomInfo1 *dominfo;
 180         struct ldb_context *samdb;
 181
 182         samdb = samdb_connect(mem_ctx, system_session(mem_ctx));
 183         if (!samdb) {
 184                 return kpasswdd_make_error_reply(kdc, mem_ctx,
 185                                                 KRB5_KPASSWD_HARDERROR,
 186                                                 "Failed to open samdb",
 187                                                 reply);
 188         }
 189
 190         DEBUG(3, ("Changing password of %s\\%s (%s)\n",
 191                   session_info->server_info->domain_name,
 192                   session_info->server_info->account_name,
 193                   dom_sid_string(mem_ctx, session_info->security_token->user_sid)));
 194
 195         /* User password change */
 196         status = samdb_set_password_sid(samdb, mem_ctx,
 197                                         session_info->security_token->user_sid,
 198                                         password, NULL, NULL,
 199                                         True, /* this is a user password change */
 200                                         &reject_reason,
 201                                         &dominfo);
 202         return kpasswd_make_pwchange_reply(kdc, mem_ctx,
 203                                            status,
 204                                            reject_reason,
 205                                            dominfo,
 206                                            reply);
 207
 208 }
 209
 210 static BOOL kpasswd_process_request(struct kdc_server *kdc,
 211                                     TALLOC_CTX *mem_ctx,
 212                                     struct gensec_security *gensec_security,
 213                                     uint16_t version,
 214                                     DATA_BLOB *input,
 215                                     DATA_BLOB *reply)
 216 {
 217         struct auth_session_info *session_info;
 218         if (!NT_STATUS_IS_OK(gensec_session_info(gensec_security,
 219                                                  &session_info))) {
 220                 return kpasswdd_make_error_reply(kdc, mem_ctx,
 221                                                 KRB5_KPASSWD_HARDERROR,
 222                                                 "gensec_session_info failed!",
 223                                                 reply);
 224         }
 225
 226         switch (version) {
 227         case KRB5_KPASSWD_VERS_CHANGEPW:
 228         {
 229                 char *password = talloc_strndup(mem_ctx, (const char *)input->data, input->length);
 230                 if (!password) {
 231                         return False;
 232                 }
 233                 return kpasswdd_change_password(kdc, mem_ctx, session_info,
 234                                                 password, reply);
 235                 break;
 236         }
 237         case KRB5_KPASSWD_VERS_SETPW:
 238         {
 239                 NTSTATUS status;
 240                 enum samr_RejectReason reject_reason = SAMR_REJECT_OTHER;
 241                 struct samr_DomInfo1 *dominfo = NULL;
 242                 struct ldb_context *samdb;
 243                 struct ldb_message *msg;
 244                 krb5_context context = kdc->smb_krb5_context->krb5_context;
 245
 246                 ChangePasswdDataMS chpw;
 247                 char *password;
 248
 249                 krb5_principal principal;
 250                 char *set_password_on_princ;
 251                 struct ldb_dn *set_password_on_dn;
 252
 253                 size_t len;
 254                 int ret;
 255
 256                 msg = ldb_msg_new(mem_ctx);
 257                 if (!msg) {
 258                         return False;
 259                 }
 260
 261                 ret = decode_ChangePasswdDataMS(input->data, input->length,
 262                                                 &chpw, &len);
 263                 if (ret) {
 264                         return kpasswdd_make_error_reply(kdc, mem_ctx,
 265                                                         KRB5_KPASSWD_MALFORMED,
 266                                                         "failed to decode password change structure",
 267                                                         reply);
 268                 }
 269
 270                 password = talloc_strndup(mem_ctx, chpw.newpasswd.data,
 271                                           chpw.newpasswd.length);
 272                 if (!password) {
 273                         free_ChangePasswdDataMS(&chpw);
 274                         return False;
 275                 }
 276                 if ((chpw.targname && !chpw.targrealm)
 277                     || (!chpw.targname && chpw.targrealm)) {
 278                         return kpasswdd_make_error_reply(kdc, mem_ctx,
 279                                                         KRB5_KPASSWD_MALFORMED,
 280                                                         "Realm and principal must be both present, or neither present",
 281                                                         reply);
 282                 }
 283                 if (chpw.targname && chpw.targrealm) {
 284                         if (_krb5_principalname2krb5_principal(kdc->smb_krb5_context->krb5_context,
 285                                                                &principal, *chpw.targname,
 286                                                                *chpw.targrealm) != 0) {
 287                                 free_ChangePasswdDataMS(&chpw);
 288                                 return kpasswdd_make_error_reply(kdc, mem_ctx,
 289                                                                 KRB5_KPASSWD_MALFORMED,
 290                                                                 "failed to extract principal to set",
 291                                                                 reply);
 292
 293                         }
 294                 } else {
 295                         free_ChangePasswdDataMS(&chpw);
 296                         return kpasswdd_change_password(kdc, mem_ctx, session_info,
 297                                                         password, reply);
 298                 }
 299                 free_ChangePasswdDataMS(&chpw);
 300
 301                 if (krb5_unparse_name(context, principal, &set_password_on_princ) != 0) {
 302                         krb5_free_principal(context, principal);
 303                         return kpasswdd_make_error_reply(kdc, mem_ctx,
 304                                                         KRB5_KPASSWD_MALFORMED,
 305                                                         "krb5_unparse_name failed!",
 306                                                         reply);
 307                 }
 308
 309                 krb5_free_principal(context, principal);
 310
 311                 samdb = samdb_connect(mem_ctx, session_info);
 312                 if (!samdb) {
 313                         return kpasswdd_make_error_reply(kdc, mem_ctx,
 314                                                          KRB5_KPASSWD_HARDERROR,
 315                                                          "Unable to open database!",
 316                                                          reply);
 317                 }
 318
 319                 DEBUG(3, ("%s\\%s (%s) is changing password of %s\n",
 320                           session_info->server_info->domain_name,
 321                           session_info->server_info->account_name,
 322                           dom_sid_string(mem_ctx, session_info->security_token->user_sid),
 323                           set_password_on_princ));
 324                 ret = ldb_transaction_start(samdb);
 325                 if (ret) {
 326                         status = NT_STATUS_TRANSACTION_ABORTED;
 327                         return kpasswd_make_pwchange_reply(kdc, mem_ctx,
 328                                                            status,
 329                                                            SAMR_REJECT_OTHER,
 330                                                            NULL,
 331                                                            reply);
 332                 }
 333
 334                 status = crack_user_principal_name(samdb, mem_ctx,
 335                                                    set_password_on_princ,
 336                                                    &set_password_on_dn, NULL);
 337                 free(set_password_on_princ);
 338                 if (!NT_STATUS_IS_OK(status)) {
 339                         ldb_transaction_cancel(samdb);
 340                         return kpasswd_make_pwchange_reply(kdc, mem_ctx,
 341                                                            status,
 342                                                            SAMR_REJECT_OTHER,
 343                                                            NULL,
 344                                                            reply);
 345                 }
 346
 347                 msg = ldb_msg_new(mem_ctx);
 348                 if (msg == NULL) {
 349                         ldb_transaction_cancel(samdb);
 350                         status = NT_STATUS_NO_MEMORY;
 351                 } else {
 352                         msg->dn = ldb_dn_copy(msg, set_password_on_dn);
 353                         if (!msg->dn) {
 354                                 status = NT_STATUS_NO_MEMORY;
 355                         }
 356                 }
 357
 358                 if (NT_STATUS_IS_OK(status)) {
 359                         /* Admin password set */
 360                         status = samdb_set_password(samdb, mem_ctx,
 361                                                     set_password_on_dn, NULL,
 362                                                     msg, password, NULL, NULL,
 363                                                     False, /* this is not a user password change */
 364                                                     &reject_reason, &dominfo);
 365                 }
 366
 367                 if (NT_STATUS_IS_OK(status)) {
 368                         /* modify the samdb record */
 369                         ret = samdb_replace(samdb, mem_ctx, msg);
 370                         if (ret != 0) {
 371                                 DEBUG(2,("Failed to modify record to set password on %s: %s\n",
 372                                          ldb_dn_get_linearized(msg->dn),
 373                                          ldb_errstring(samdb)));
 374                                 status = NT_STATUS_ACCESS_DENIED;
 375                         }
 376                 }
 377                 if (NT_STATUS_IS_OK(status)) {
 378                         ret = ldb_transaction_commit(samdb);
 379                         if (ret != 0) {
 380                                 DEBUG(1,("Failed to commit transaction to set password on %s: %s\n",
 381                                          ldb_dn_get_linearized(msg->dn),
 382                                          ldb_errstring(samdb)));
 383                                 status = NT_STATUS_TRANSACTION_ABORTED;
 384                         }
 385                 } else {
 386                         ldb_transaction_cancel(samdb);
 387                 }
 388                 return kpasswd_make_pwchange_reply(kdc, mem_ctx,
 389                                                    status,
 390                                                    reject_reason,
 391                                                    dominfo,
 392                                                    reply);
 393         }
 394         default:
 395                 return kpasswdd_make_error_reply(kdc, mem_ctx,
 396                                                  KRB5_KPASSWD_BAD_VERSION,
 397                                                  talloc_asprintf(mem_ctx,
 398                                                                  "Protocol version %u not supported",
 399                                                                  version),
 400                                                  reply);
 401         }
 402         return True;
 403 }
 404
 405 BOOL kpasswdd_process(struct kdc_server *kdc,
 406                       TALLOC_CTX *mem_ctx,
 407                       DATA_BLOB *input,
 408                       DATA_BLOB *reply,
 409                       struct socket_address *peer_addr,
 410                       struct socket_address *my_addr,
 411                       int datagram_reply)
 412 {
 413         BOOL ret;
 414         const uint16_t header_len = 6;
 415         uint16_t len;
 416         uint16_t ap_req_len;
 417         uint16_t krb_priv_len;
 418         uint16_t version;
 419         NTSTATUS nt_status;
 420         DATA_BLOB ap_req, krb_priv_req;
 421         DATA_BLOB krb_priv_rep = data_blob(NULL, 0);
 422         DATA_BLOB ap_rep = data_blob(NULL, 0);
 423         DATA_BLOB kpasswd_req, kpasswd_rep;
 424         struct cli_credentials *server_credentials;
 425         struct gensec_security *gensec_security;
 426         TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
 427
 428         if (!tmp_ctx) {
 429                 return False;
 430         }
 431
 432         /* Be parinoid.  We need to ensure we don't just let the
 433          * caller lead us into a buffer overflow */
 434         if (input->length <= header_len) {
 435                 talloc_free(tmp_ctx);
 436                 return False;
 437         }
 438
 439         len = RSVAL(input->data, 0);
 440         if (input->length != len) {
 441                 talloc_free(tmp_ctx);
 442                 return False;
 443         }
 444
 445         /* There are two different versions of this protocol so far,
 446          * plus others in the standards pipe.  Fortunetly they all
 447          * take a very similar framing */
 448         version = RSVAL(input->data, 2);
 449         ap_req_len = RSVAL(input->data, 4);
 450         if ((ap_req_len >= len) || (ap_req_len + header_len) >= len) {
 451                 talloc_free(tmp_ctx);
 452                 return False;
 453         }
 454
 455         krb_priv_len = len - ap_req_len;
 456         ap_req = data_blob_const(&input->data[header_len], ap_req_len);
 457         krb_priv_req = data_blob_const(&input->data[header_len + ap_req_len], krb_priv_len);
 458
 459         nt_status = gensec_server_start(tmp_ctx, kdc->task->event_ctx, kdc->task->msg_ctx, &gensec_security);
 460         if (!NT_STATUS_IS_OK(nt_status)) {
 461                 talloc_free(tmp_ctx);
 462                 return False;
 463         }
 464
 465         server_credentials = cli_credentials_init(tmp_ctx);
 466         if (!server_credentials) {
 467                 DEBUG(1, ("Failed to init server credentials\n"));
 468                 return False;
 469         }
 470
 471         /* We want the credentials subsystem to use the krb5 context
 472          * we already have, rather than a new context */
 473         cli_credentials_set_krb5_context(server_credentials, kdc->smb_krb5_context);
 474         cli_credentials_set_conf(server_credentials);
 475         nt_status = cli_credentials_set_stored_principal(server_credentials, "kadmin/changepw");
 476         if (!NT_STATUS_IS_OK(nt_status)) {
 477                 ret = kpasswdd_make_unauth_error_reply(kdc, mem_ctx,
 478                                                        KRB5_KPASSWD_HARDERROR,
 479                                                        talloc_asprintf(mem_ctx,
 480                                                                        "Failed to obtain server credentials for kadmin/changepw: %s\n",
 481                                                                        nt_errstr(nt_status)),
 482                                                        &krb_priv_rep);
 483                 ap_rep.length = 0;
 484                 if (ret) {
 485                         goto reply;
 486                 }
 487                 talloc_free(tmp_ctx);
 488                 return ret;
 489         }
 490
 491         nt_status = gensec_set_credentials(gensec_security, server_credentials);
 492         if (!NT_STATUS_IS_OK(nt_status)) {
 493                 talloc_free(tmp_ctx);
 494                 return False;
 495         }
 496
 497         /* The kerberos PRIV packets include these addresses.  MIT
 498          * clients check that they are present */
 499         nt_status = gensec_set_peer_addr(gensec_security, peer_addr);
 500         if (!NT_STATUS_IS_OK(nt_status)) {
 501                 talloc_free(tmp_ctx);
 502                 return False;
 503         }
 504         nt_status = gensec_set_my_addr(gensec_security, my_addr);
 505         if (!NT_STATUS_IS_OK(nt_status)) {
 506                 talloc_free(tmp_ctx);
 507                 return False;
 508         }
 509
 510         /* We want the GENSEC wrap calls to generate PRIV tokens */
 511         gensec_want_feature(gensec_security, GENSEC_FEATURE_SEAL);
 512
 513         nt_status = gensec_start_mech_by_name(gensec_security, "krb5");
 514         if (!NT_STATUS_IS_OK(nt_status)) {
 515                 talloc_free(tmp_ctx);
 516                 return False;
 517         }
 518
 519         /* Accept the AP-REQ and generate teh AP-REP we need for the reply */
 520         nt_status = gensec_update(gensec_security, tmp_ctx, ap_req, &ap_rep);
 521         if (!NT_STATUS_IS_OK(nt_status) && !NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 522
 523                 ret = kpasswdd_make_unauth_error_reply(kdc, mem_ctx,
 524                                                        KRB5_KPASSWD_HARDERROR,
 525                                                        talloc_asprintf(mem_ctx,
 526                                                                        "gensec_update failed: %s",
 527                                                                        nt_errstr(nt_status)),
 528                                                        &krb_priv_rep);
 529                 ap_rep.length = 0;
 530                 if (ret) {
 531                         goto reply;
 532                 }
 533                 talloc_free(tmp_ctx);
 534                 return ret;
 535         }
 536
 537         /* Extract the data from the KRB-PRIV half of the message */
 538         nt_status = gensec_unwrap(gensec_security, tmp_ctx, &krb_priv_req, &kpasswd_req);
 539         if (!NT_STATUS_IS_OK(nt_status)) {
 540                 ret = kpasswdd_make_unauth_error_reply(kdc, mem_ctx,
 541                                                        KRB5_KPASSWD_HARDERROR,
 542                                                        talloc_asprintf(mem_ctx,
 543                                                                        "gensec_unwrap failed: %s",
 544                                                                        nt_errstr(nt_status)),
 545                                                        &krb_priv_rep);
 546                 ap_rep.length = 0;
 547                 if (ret) {
 548                         goto reply;
 549                 }
 550                 talloc_free(tmp_ctx);
 551                 return ret;
 552         }
 553
 554         /* Figure out something to do with it (probably changing a password...) */
 555         ret = kpasswd_process_request(kdc, tmp_ctx,
 556                                       gensec_security,
 557                                       version,
 558                                       &kpasswd_req, &kpasswd_rep);
 559         if (!ret) {
 560                 /* Argh! */
 561                 return False;
 562         }
 563
 564         /* And wrap up the reply: This ensures that the error message
 565          * or success can be verified by the client */
 566         nt_status = gensec_wrap(gensec_security, tmp_ctx,
 567                                 &kpasswd_rep, &krb_priv_rep);
 568         if (!NT_STATUS_IS_OK(nt_status)) {
 569                 ret = kpasswdd_make_unauth_error_reply(kdc, mem_ctx,
 570                                                        KRB5_KPASSWD_HARDERROR,
 571                                                        talloc_asprintf(mem_ctx,
 572                                                                        "gensec_wrap failed: %s",
 573                                                                        nt_errstr(nt_status)),
 574                                                        &krb_priv_rep);
 575                 ap_rep.length = 0;
 576                 if (ret) {
 577                         goto reply;
 578                 }
 579                 talloc_free(tmp_ctx);
 580                 return ret;
 581         }
 582
 583 reply:
 584         *reply = data_blob_talloc(mem_ctx, NULL, krb_priv_rep.length + ap_rep.length + header_len);
 585         if (!reply->data) {
 586                 return False;
 587         }
 588
 589         RSSVAL(reply->data, 0, reply->length);
 590         RSSVAL(reply->data, 2, 1); /* This is a version 1 reply, MS change/set or otherwise */
 591         RSSVAL(reply->data, 4, ap_rep.length);
 592         memcpy(reply->data + header_len,
 593                ap_rep.data,
 594                ap_rep.length);
 595         memcpy(reply->data + header_len + ap_rep.length,
 596                krb_priv_rep.data,
 597                krb_priv_rep.length);
 598
 599         talloc_free(tmp_ctx);
 600         return ret;
 601 }
 602