auth/auth_log.c

   1 /*
   2
   3    Authentication and authorization logging
   4
   5    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2017
   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 /*
  22  * Debug log levels for authentication logging (these both map to
  23  * LOG_NOTICE in syslog)
  24  */
  25 #define AUTH_FAILURE_LEVEL 2
  26 #define AUTH_SUCCESS_LEVEL 3
  27 #define AUTHZ_SUCCESS_LEVEL 4
  28
  29 /* 5 is used for both authentication and authorization */
  30 #define AUTH_ANONYMOUS_LEVEL 5
  31 #define AUTHZ_ANONYMOUS_LEVEL 5
  32
  33 #define AUTHZ_JSON_TYPE "Authorization"
  34 #define AUTH_JSON_TYPE  "Authentication"
  35
  36 /*
  37  * JSON message version numbers
  38  *
  39  * If adding a field increment the minor version
  40  * If removing or changing the format/meaning of a field
  41  * increment the major version.
  42  */
  43 #define AUTH_MAJOR 1
  44 #define AUTH_MINOR 1
  45 #define AUTHZ_MAJOR 1
  46 #define AUTHZ_MINOR 1
  47
  48 #include "includes.h"
  49 #include "../lib/tsocket/tsocket.h"
  50 #include "common_auth.h"
  51 #include "lib/util/util_str_escape.h"
  52 #include "libcli/security/dom_sid.h"
  53 #include "libcli/security/security_token.h"
  54 #include "librpc/gen_ndr/server_id.h"
  55 #include "source4/lib/messaging/messaging.h"
  56 #include "source4/lib/messaging/irpc.h"
  57 #include "lib/util/server_id_db.h"
  58 #include "lib/param/param.h"
  59 #include "librpc/ndr/libndr.h"
  60 #include "librpc/gen_ndr/windows_event_ids.h"
  61 #include "lib/audit_logging/audit_logging.h"
  62
  63 /*
  64  * Determine the type of the password supplied for the
  65  * authorisation attempt.
  66  *
  67  */
  68 static const char* get_password_type(const struct auth_usersupplied_info *ui);
  69
  70 #ifdef HAVE_JANSSON
  71
  72 #include <jansson.h>
  73 #include "system/time.h"
  74
  75 /*
  76  * Write the json object to the debug logs.
  77  *
  78  */
  79 static void log_json(struct imessaging_context *msg_ctx,
  80                      struct loadparm_context *lp_ctx,
  81                      struct json_object *object,
  82                      int debug_class,
  83                      int debug_level)
  84 {
  85         audit_log_json(object, debug_class, debug_level);
  86         if (msg_ctx && lp_ctx && lpcfg_auth_event_notification(lp_ctx)) {
  87                 audit_message_send(msg_ctx,
  88                                    AUTH_EVENT_NAME,
  89                                    MSG_AUTH_LOG,
  90                                    object);
  91         }
  92 }
  93
  94 /*
  95  * Determine the Windows logon type for the current authorisation attempt.
  96  *
  97  * Currently Samba only supports
  98  *
  99  * 2 Interactive      A user logged on to this computer.
 100  * 3 Network          A user or computer logged on to this computer from
 101  *                    the network.
 102  * 8 NetworkCleartext A user logged on to this computer from the network.
 103  *                    The user's password was passed to the authentication
 104  *                    package in its unhashed form.
 105  *
 106  */
 107 static enum event_logon_type get_logon_type(
 108         const struct auth_usersupplied_info *ui)
 109 {
 110         if ((ui->logon_parameters & MSV1_0_CLEARTEXT_PASSWORD_SUPPLIED)
 111            || (ui->password_state == AUTH_PASSWORD_PLAIN)) {
 112                 return EVT_LOGON_NETWORK_CLEAR_TEXT;
 113         } else if (ui->flags & USER_INFO_INTERACTIVE_LOGON) {
 114                 return EVT_LOGON_INTERACTIVE;
 115         }
 116         return EVT_LOGON_NETWORK;
 117 }
 118
 119 /*
 120  * Write a machine parsable json formatted authentication log entry.
 121  *
 122  * IF removing or changing the format/meaning of a field please update the
 123  *    major version number AUTH_MAJOR
 124  *
 125  * IF adding a new field please update the minor version number AUTH_MINOR
 126  *
 127  *  To process the resulting log lines from the commend line use jq to
 128  *  parse the json.
 129  *
 130  *  grep "^  {" log file |
 131  *  jq -rc '"\(.timestamp)\t\(.Authentication.status)\t
 132  *           \(.Authentication.clientDomain)\t
 133  *           \(.Authentication.clientAccount)
 134  *           \t\(.Authentication.workstation)
 135  *           \t\(.Authentication.remoteAddress)
 136  *           \t\(.Authentication.localAddress)"'
 137  */
 138 static void log_authentication_event_json(
 139         struct imessaging_context *msg_ctx,
 140         struct loadparm_context *lp_ctx,
 141         const struct timeval *start_time,
 142         const struct auth_usersupplied_info *ui,
 143         NTSTATUS status,
 144         const char *domain_name,
 145         const char *account_name,
 146         const char *unix_username,
 147         struct dom_sid *sid,
 148         enum event_id_type event_id,
 149         int debug_level)
 150 {
 151         struct json_object wrapper = json_empty_object;
 152         struct json_object authentication = json_empty_object;
 153         char negotiate_flags[11];
 154         int rc = 0;
 155
 156         authentication = json_new_object();
 157         if (json_is_invalid(&authentication)) {
 158                 goto failure;
 159         }
 160         rc = json_add_version(&authentication, AUTH_MAJOR, AUTH_MINOR);
 161         if (rc != 0) {
 162                 goto failure;
 163         }
 164         rc = json_add_int(&authentication,
 165                           "eventId",
 166                           event_id);
 167         if (rc != 0) {
 168                 goto failure;
 169         }
 170         rc = json_add_int(&authentication, "logonType", get_logon_type(ui));
 171         if (rc != 0) {
 172                 goto failure;
 173         }
 174         rc = json_add_string(&authentication, "status", nt_errstr(status));
 175         if (rc != 0) {
 176                 goto failure;
 177         }
 178         rc = json_add_address(&authentication, "localAddress", ui->local_host);
 179         if (rc != 0) {
 180                 goto failure;
 181         }
 182         rc =
 183             json_add_address(&authentication, "remoteAddress", ui->remote_host);
 184         if (rc != 0) {
 185                 goto failure;
 186         }
 187         rc = json_add_string(
 188             &authentication, "serviceDescription", ui->service_description);
 189         if (rc != 0) {
 190                 goto failure;
 191         }
 192         rc = json_add_string(
 193             &authentication, "authDescription", ui->auth_description);
 194         if (rc != 0) {
 195                 goto failure;
 196         }
 197         rc = json_add_string(
 198             &authentication, "clientDomain", ui->client.domain_name);
 199         if (rc != 0) {
 200                 goto failure;
 201         }
 202         rc = json_add_string(
 203             &authentication, "clientAccount", ui->client.account_name);
 204         if (rc != 0) {
 205                 goto failure;
 206         }
 207         rc = json_add_string(
 208             &authentication, "workstation", ui->workstation_name);
 209         if (rc != 0) {
 210                 goto failure;
 211         }
 212         rc = json_add_string(&authentication, "becameAccount", account_name);
 213         if (rc != 0) {
 214                 goto failure;
 215         }
 216         rc = json_add_string(&authentication, "becameDomain", domain_name);
 217         if (rc != 0) {
 218                 goto failure;
 219         }
 220         rc = json_add_sid(&authentication, "becameSid", sid);
 221         if (rc != 0) {
 222                 goto failure;
 223         }
 224         rc = json_add_string(
 225             &authentication, "mappedAccount", ui->mapped.account_name);
 226         if (rc != 0) {
 227                 goto failure;
 228         }
 229         rc = json_add_string(
 230             &authentication, "mappedDomain", ui->mapped.domain_name);
 231         if (rc != 0) {
 232                 goto failure;
 233         }
 234         rc = json_add_string(&authentication,
 235                              "netlogonComputer",
 236                              ui->netlogon_trust_account.computer_name);
 237         if (rc != 0) {
 238                 goto failure;
 239         }
 240         rc = json_add_string(&authentication,
 241                              "netlogonTrustAccount",
 242                              ui->netlogon_trust_account.account_name);
 243         if (rc != 0) {
 244                 goto failure;
 245         }
 246         snprintf(negotiate_flags,
 247                  sizeof( negotiate_flags),
 248                  "0x%08X",
 249                  ui->netlogon_trust_account.negotiate_flags);
 250         rc = json_add_string(
 251             &authentication, "netlogonNegotiateFlags", negotiate_flags);
 252         if (rc != 0) {
 253                 goto failure;
 254         }
 255         rc = json_add_int(&authentication,
 256                           "netlogonSecureChannelType",
 257                           ui->netlogon_trust_account.secure_channel_type);
 258         if (rc != 0) {
 259                 goto failure;
 260         }
 261         rc = json_add_sid(&authentication,
 262                           "netlogonTrustAccountSid",
 263                           ui->netlogon_trust_account.sid);
 264         if (rc != 0) {
 265                 goto failure;
 266         }
 267         rc = json_add_string(
 268             &authentication, "passwordType", get_password_type(ui));
 269         if (rc != 0) {
 270                 goto failure;
 271         }
 272
 273         wrapper = json_new_object();
 274         if (json_is_invalid(&wrapper)) {
 275                 goto failure;
 276         }
 277         rc = json_add_timestamp(&wrapper);
 278         if (rc != 0) {
 279                 goto failure;
 280         }
 281         rc = json_add_string(&wrapper, "type", AUTH_JSON_TYPE);
 282         if (rc != 0) {
 283                 goto failure;
 284         }
 285         rc = json_add_object(&wrapper, AUTH_JSON_TYPE, &authentication);
 286         if (rc != 0) {
 287                 goto failure;
 288         }
 289
 290         /*
 291          * While not a general-purpose profiling solution this will
 292          * assist some to determine how long NTLM and KDC
 293          * authentication takes once this process can handle it.  This
 294          * covers transactions elsewhere but not (eg) the delay while
 295          * this is waiting unread on the input socket.
 296          */
 297         if (start_time != NULL) {
 298                 struct timeval current_time = timeval_current();
 299                 uint64_t duration =  usec_time_diff(&current_time,
 300                                                     start_time);
 301                 rc = json_add_int(&authentication, "duration", duration);
 302                 if (rc != 0) {
 303                         goto failure;
 304                 }
 305         }
 306
 307         log_json(msg_ctx,
 308                  lp_ctx,
 309                  &wrapper,
 310                  DBGC_AUTH_AUDIT_JSON,
 311                  debug_level);
 312         json_free(&wrapper);
 313         return;
 314 failure:
 315         /*
 316          * On a failure authentication will not have been added to wrapper so it
 317          * needs to be freed to avoid a leak.
 318          *
 319          */
 320         json_free(&authentication);
 321         json_free(&wrapper);
 322         DBG_ERR("Failed to write authentication event JSON log message\n");
 323 }
 324
 325 /*
 326  * Log details of a successful authorization to a service,
 327  * in a machine parsable json format
 328  *
 329  * IF removing or changing the format/meaning of a field please update the
 330  *    major version number AUTHZ_MAJOR
 331  *
 332  * IF adding a new field please update the minor version number AUTHZ_MINOR
 333  *
 334  *  To process the resulting log lines from the commend line use jq to
 335  *  parse the json.
 336  *
 337  *  grep "^  {" log_file |\
 338  *  jq -rc '"\(.timestamp)\t
 339  *           \(.Authorization.domain)\t
 340  *           \(.Authorization.account)\t
 341  *           \(.Authorization.remoteAddress)"'
 342  *
 343  */
 344 static void log_successful_authz_event_json(
 345         struct imessaging_context *msg_ctx,
 346         struct loadparm_context *lp_ctx,
 347         const struct tsocket_address *remote,
 348         const struct tsocket_address *local,
 349         const char *service_description,
 350         const char *auth_type,
 351         const char *transport_protection,
 352         struct auth_session_info *session_info,
 353         int debug_level)
 354 {
 355         struct json_object wrapper = json_empty_object;
 356         struct json_object authorization = json_empty_object;
 357         char account_flags[11];
 358         int rc = 0;
 359
 360         authorization = json_new_object();
 361         if (json_is_invalid(&authorization)) {
 362                 goto failure;
 363         }
 364         rc = json_add_version(&authorization, AUTHZ_MAJOR, AUTHZ_MINOR);
 365         if (rc != 0) {
 366                 goto failure;
 367         }
 368         rc = json_add_address(&authorization, "localAddress", local);
 369         if (rc != 0) {
 370                 goto failure;
 371         }
 372         rc = json_add_address(&authorization, "remoteAddress", remote);
 373         if (rc != 0) {
 374                 goto failure;
 375         }
 376         rc = json_add_string(
 377             &authorization, "serviceDescription", service_description);
 378         if (rc != 0) {
 379                 goto failure;
 380         }
 381         rc = json_add_string(&authorization, "authType", auth_type);
 382         if (rc != 0) {
 383                 goto failure;
 384         }
 385         rc = json_add_string(
 386             &authorization, "domain", session_info->info->domain_name);
 387         if (rc != 0) {
 388                 goto failure;
 389         }
 390         rc = json_add_string(
 391             &authorization, "account", session_info->info->account_name);
 392         if (rc != 0) {
 393                 goto failure;
 394         }
 395         rc = json_add_sid(
 396             &authorization, "sid", &session_info->security_token->sids[0]);
 397         if (rc != 0) {
 398                 goto failure;
 399         }
 400         rc = json_add_guid(
 401             &authorization, "sessionId", &session_info->unique_session_token);
 402         if (rc != 0) {
 403                 goto failure;
 404         }
 405         rc = json_add_string(
 406             &authorization, "logonServer", session_info->info->logon_server);
 407         if (rc != 0) {
 408                 goto failure;
 409         }
 410         rc = json_add_string(
 411             &authorization, "transportProtection", transport_protection);
 412         if (rc != 0) {
 413                 goto failure;
 414         }
 415
 416         snprintf(account_flags,
 417                  sizeof(account_flags),
 418                  "0x%08X",
 419                  session_info->info->acct_flags);
 420         rc = json_add_string(&authorization, "accountFlags", account_flags);
 421         if (rc != 0) {
 422                 goto failure;
 423         }
 424
 425         wrapper = json_new_object();
 426         if (json_is_invalid(&wrapper)) {
 427                 goto failure;
 428         }
 429         rc = json_add_timestamp(&wrapper);
 430         if (rc != 0) {
 431                 goto failure;
 432         }
 433         rc = json_add_string(&wrapper, "type", AUTHZ_JSON_TYPE);
 434         if (rc != 0) {
 435                 goto failure;
 436         }
 437         rc = json_add_object(&wrapper, AUTHZ_JSON_TYPE, &authorization);
 438         if (rc != 0) {
 439                 goto failure;
 440         }
 441
 442         log_json(msg_ctx,
 443                  lp_ctx,
 444                  &wrapper,
 445                  DBGC_AUTH_AUDIT_JSON,
 446                  debug_level);
 447         json_free(&wrapper);
 448         return;
 449 failure:
 450         /*
 451          * On a failure authorization will not have been added to wrapper so it
 452          * needs to be freed to avoid a leak.
 453          *
 454          */
 455         json_free(&authorization);
 456         json_free(&wrapper);
 457         DBG_ERR("Unable to log Authentication event JSON audit message\n");
 458 }
 459
 460 #else
 461
 462 static void log_no_json(struct imessaging_context *msg_ctx,
 463                         struct loadparm_context *lp_ctx)
 464 {
 465         if (msg_ctx && lp_ctx && lpcfg_auth_event_notification(lp_ctx)) {
 466                 static bool auth_event_logged = false;
 467                 if (auth_event_logged == false) {
 468                         auth_event_logged = true;
 469                         DBG_ERR("auth event notification = true but Samba was "
 470                                 "not compiled with jansson\n");
 471                 }
 472         } else {
 473                 static bool json_logged = false;
 474                 if (json_logged == false) {
 475                         json_logged = true;
 476                         DBG_NOTICE("JSON auth logs not available unless "
 477                                    "compiled with jansson\n");
 478                 }
 479         }
 480
 481         return;
 482 }
 483
 484 static void log_authentication_event_json(
 485         struct imessaging_context *msg_ctx,
 486         struct loadparm_context *lp_ctx,
 487         const struct timeval *start_time,
 488         const struct auth_usersupplied_info *ui,
 489         NTSTATUS status,
 490         const char *domain_name,
 491         const char *account_name,
 492         const char *unix_username,
 493         struct dom_sid *sid,
 494         enum event_id_type event_id,
 495         int debug_level)
 496 {
 497         log_no_json(msg_ctx, lp_ctx);
 498         return;
 499 }
 500
 501 static void log_successful_authz_event_json(
 502         struct imessaging_context *msg_ctx,
 503         struct loadparm_context *lp_ctx,
 504         const struct tsocket_address *remote,
 505         const struct tsocket_address *local,
 506         const char *service_description,
 507         const char *auth_type,
 508         const char *transport_protection,
 509         struct auth_session_info *session_info,
 510         int debug_level)
 511 {
 512         log_no_json(msg_ctx, lp_ctx);
 513         return;
 514 }
 515
 516 #endif
 517
 518 /*
 519  * Determine the type of the password supplied for the
 520  * authorisation attempt.
 521  *
 522  */
 523 static const char* get_password_type(const struct auth_usersupplied_info *ui)
 524 {
 525
 526         const char *password_type = NULL;
 527
 528         if (ui->password_type != NULL) {
 529                 password_type = ui->password_type;
 530         } else if (ui->auth_description != NULL &&
 531                    strncmp("ServerAuthenticate", ui->auth_description, 18) == 0)
 532         {
 533                 if (ui->netlogon_trust_account.negotiate_flags
 534                     & NETLOGON_NEG_SUPPORTS_AES) {
 535                         password_type = "HMAC-SHA256";
 536                 } else if (ui->netlogon_trust_account.negotiate_flags
 537                            & NETLOGON_NEG_STRONG_KEYS) {
 538                         password_type = "HMAC-MD5";
 539                 } else {
 540                         password_type = "DES";
 541                 }
 542         } else if (ui->password_state == AUTH_PASSWORD_RESPONSE &&
 543                    (ui->logon_parameters & MSV1_0_ALLOW_MSVCHAPV2) &&
 544                    ui->password.response.nt.length == 24) {
 545                 password_type = "MSCHAPv2";
 546         } else if ((ui->logon_parameters & MSV1_0_CLEARTEXT_PASSWORD_SUPPLIED)
 547                    || (ui->password_state == AUTH_PASSWORD_PLAIN)) {
 548                 password_type = "Plaintext";
 549         } else if (ui->password_state == AUTH_PASSWORD_HASH) {
 550                 password_type = "Supplied-NT-Hash";
 551         } else if (ui->password_state == AUTH_PASSWORD_RESPONSE
 552                    && ui->password.response.nt.length > 24) {
 553                 password_type = "NTLMv2";
 554         } else if (ui->password_state == AUTH_PASSWORD_RESPONSE
 555                    && ui->password.response.nt.length == 24) {
 556                 password_type = "NTLMv1";
 557         } else if (ui->password_state == AUTH_PASSWORD_RESPONSE
 558                    && ui->password.response.lanman.length == 24) {
 559                 password_type = "LANMan";
 560         } else if (ui->password_state == AUTH_PASSWORD_RESPONSE
 561                    && ui->password.response.nt.length == 0
 562                    && ui->password.response.lanman.length == 0) {
 563                 password_type = "No-Password";
 564         }
 565         return password_type;
 566 }
 567
 568 /*
 569  * Write a human readable authentication log entry.
 570  *
 571  */
 572 static void log_authentication_event_human_readable(
 573         const struct auth_usersupplied_info *ui,
 574         NTSTATUS status,
 575         const char *domain_name,
 576         const char *account_name,
 577         const char *unix_username,
 578         struct dom_sid *sid,
 579         int debug_level)
 580 {
 581         TALLOC_CTX *frame = NULL;
 582
 583         const char *ts = NULL;             /* formatted current time      */
 584         char *remote = NULL;               /* formatted remote host       */
 585         char *local = NULL;                /* formatted local host        */
 586         char *nl = NULL;                   /* NETLOGON details if present */
 587         char *trust_computer_name = NULL;
 588         char *trust_account_name = NULL;
 589         char *logon_line = NULL;
 590         const char *password_type = NULL;
 591
 592         frame = talloc_stackframe();
 593
 594         password_type = get_password_type(ui);
 595         /* Get the current time */
 596         ts = audit_get_timestamp(frame);
 597
 598         /* Only log the NETLOGON details if they are present */
 599         if (ui->netlogon_trust_account.computer_name ||
 600             ui->netlogon_trust_account.account_name) {
 601                 trust_computer_name = log_escape(frame,
 602                         ui->netlogon_trust_account.computer_name);
 603                 trust_account_name  = log_escape(frame,
 604                         ui->netlogon_trust_account.account_name);
 605                 nl = talloc_asprintf(frame,
 606                         " NETLOGON computer [%s] trust account [%s]",
 607                         trust_computer_name, trust_account_name);
 608         }
 609
 610         remote = tsocket_address_string(ui->remote_host, frame);
 611         local = tsocket_address_string(ui->local_host, frame);
 612
 613         if (NT_STATUS_IS_OK(status)) {
 614                 struct dom_sid_buf sid_buf;
 615
 616                 logon_line = talloc_asprintf(frame,
 617                                              " became [%s]\\[%s] [%s].",
 618                                              log_escape(frame, domain_name),
 619                                              log_escape(frame, account_name),
 620                                              dom_sid_str_buf(sid, &sid_buf));
 621         } else {
 622                 logon_line = talloc_asprintf(
 623                                 frame,
 624                                 " mapped to [%s]\\[%s].",
 625                                 log_escape(frame, ui->mapped.domain_name),
 626                                 log_escape(frame, ui->mapped.account_name));
 627         }
 628
 629         DEBUGC(DBGC_AUTH_AUDIT, debug_level,
 630                ("Auth: [%s,%s] user [%s]\\[%s]"
 631                 " at [%s] with [%s] status [%s]"
 632                 " workstation [%s] remote host [%s]"
 633                 "%s local host [%s]"
 634                 " %s\n",
 635                 ui->service_description,
 636                 ui->auth_description,
 637                 log_escape(frame, ui->client.domain_name),
 638                 log_escape(frame, ui->client.account_name),
 639                 ts,
 640                 password_type,
 641                 nt_errstr(status),
 642                 log_escape(frame, ui->workstation_name),
 643                 remote,
 644                 logon_line,
 645                 local,
 646                 nl ? nl : ""
 647         ));
 648
 649         talloc_free(frame);
 650 }
 651
 652 /*
 653  * Log details of an authentication attempt.
 654  * Successful and unsuccessful attempts are logged.
 655  *
 656  * NOTE: msg_ctx and lp_ctx is optional, but when supplied allows streaming the
 657  * authentication events over the message bus.
 658  */
 659 void log_authentication_event(
 660         struct imessaging_context *msg_ctx,
 661         struct loadparm_context *lp_ctx,
 662         const struct timeval *start_time,
 663         const struct auth_usersupplied_info *ui,
 664         NTSTATUS status,
 665         const char *domain_name,
 666         const char *account_name,
 667         const char *unix_username,
 668         struct dom_sid *sid)
 669 {
 670         /* set the log level */
 671         int debug_level = AUTH_FAILURE_LEVEL;
 672         enum event_id_type event_id = EVT_ID_UNSUCCESSFUL_LOGON;
 673
 674         if (NT_STATUS_IS_OK(status)) {
 675                 debug_level = AUTH_SUCCESS_LEVEL;
 676                 event_id = EVT_ID_SUCCESSFUL_LOGON;
 677                 if (dom_sid_equal(sid, &global_sid_Anonymous)) {
 678                         debug_level = AUTH_ANONYMOUS_LEVEL;
 679                 }
 680         }
 681
 682         if (CHECK_DEBUGLVLC(DBGC_AUTH_AUDIT, debug_level)) {
 683                 log_authentication_event_human_readable(ui,
 684                                                         status,
 685                                                         domain_name,
 686                                                         account_name,
 687                                                         unix_username,
 688                                                         sid,
 689                                                         debug_level);
 690         }
 691         if (CHECK_DEBUGLVLC(DBGC_AUTH_AUDIT_JSON, debug_level) ||
 692             (msg_ctx && lp_ctx && lpcfg_auth_event_notification(lp_ctx))) {
 693                 log_authentication_event_json(msg_ctx,
 694                                               lp_ctx,
 695                                               start_time,
 696                                               ui,
 697                                               status,
 698                                               domain_name,
 699                                               account_name,
 700                                               unix_username,
 701                                               sid,
 702                                               event_id,
 703                                               debug_level);
 704         }
 705 }
 706
 707
 708
 709 /*
 710  * Log details of a successful authorization to a service,
 711  * in a human readable format.
 712  *
 713  */
 714 static void log_successful_authz_event_human_readable(
 715         const struct tsocket_address *remote,
 716         const struct tsocket_address *local,
 717         const char *service_description,
 718         const char *auth_type,
 719         const char *transport_protection,
 720         struct auth_session_info *session_info,
 721         int debug_level)
 722 {
 723         TALLOC_CTX *frame = NULL;
 724
 725         const char *ts = NULL;       /* formatted current time      */
 726         char *remote_str = NULL;     /* formatted remote host       */
 727         char *local_str = NULL;      /* formatted local host        */
 728         struct dom_sid_buf sid_buf;
 729
 730         frame = talloc_stackframe();
 731
 732         /* Get the current time */
 733         ts = audit_get_timestamp(frame);
 734
 735         remote_str = tsocket_address_string(remote, frame);
 736         local_str = tsocket_address_string(local, frame);
 737
 738         DEBUGC(DBGC_AUTH_AUDIT, debug_level,
 739                ("Successful AuthZ: [%s,%s] user [%s]\\[%s] [%s]"
 740                 " at [%s]"
 741                 " Remote host [%s]"
 742                 " local host [%s]\n",
 743                 service_description,
 744                 auth_type,
 745                 log_escape(frame, session_info->info->domain_name),
 746                 log_escape(frame, session_info->info->account_name),
 747                 dom_sid_str_buf(&session_info->security_token->sids[0],
 748                                 &sid_buf),
 749                 ts,
 750                 remote_str,
 751                 local_str));
 752
 753         talloc_free(frame);
 754 }
 755
 756 /*
 757  * Log details of a successful authorization to a service.
 758  *
 759  * Only successful authorizations are logged.  For clarity:
 760  * - NTLM bad passwords will be recorded by log_authentication_event
 761  * - Kerberos decrypt failures need to be logged in gensec_gssapi et al
 762  *
 763  * The service may later refuse authorization due to an ACL.
 764  *
 765  * NOTE: msg_ctx and lp_ctx is optional, but when supplied allows streaming the
 766  * authentication events over the message bus.
 767  */
 768 void log_successful_authz_event(
 769         struct imessaging_context *msg_ctx,
 770         struct loadparm_context *lp_ctx,
 771         const struct tsocket_address *remote,
 772         const struct tsocket_address *local,
 773         const char *service_description,
 774         const char *auth_type,
 775         const char *transport_protection,
 776         struct auth_session_info *session_info)
 777 {
 778         int debug_level = AUTHZ_SUCCESS_LEVEL;
 779
 780         /* set the log level */
 781         if (security_token_is_anonymous(session_info->security_token)) {
 782                 debug_level = AUTH_ANONYMOUS_LEVEL;
 783         }
 784
 785         if (CHECK_DEBUGLVLC(DBGC_AUTH_AUDIT, debug_level)) {
 786                 log_successful_authz_event_human_readable(remote,
 787                                                           local,
 788                                                           service_description,
 789                                                           auth_type,
 790                                                           transport_protection,
 791                                                           session_info,
 792                                                           debug_level);
 793         }
 794         if (CHECK_DEBUGLVLC(DBGC_AUTH_AUDIT_JSON, debug_level) ||
 795             (msg_ctx && lp_ctx && lpcfg_auth_event_notification(lp_ctx))) {
 796                 log_successful_authz_event_json(msg_ctx, lp_ctx,
 797                                                 remote,
 798                                                 local,
 799                                                 service_description,
 800                                                 auth_type,
 801                                                 transport_protection,
 802                                                 session_info,
 803                                                 debug_level);
 804         }
 805 }