lib/cib/cib_remote.c

/* */
This source file includes following definitions.
cib_remote_perform_op
cib_remote_callback_dispatch
cib_remote_command_dispatch
cib_tls_close
cib_remote_connection_destroy
cib_tls_signon
cib_remote_signon
cib_remote_signoff
cib_remote_free
cib_remote_inputfd
cib_remote_register_notification
cib_remote_set_connection_dnotify
cib_remote_client_id
cib_remote_new
cib__set_output
   1 /*
   2  * Copyright 2008-2024 the Pacemaker project contributors
   3  *
   4  * The version control history for this file may have further details.
   5  *
   6  * This source code is licensed under the GNU Lesser General Public License
   7  * version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
   8  */
   9 
  10 #include <crm_internal.h>
  11 
  12 #include <unistd.h>
  13 #include <stdlib.h>
  14 #include <stdio.h>
  15 #include <stdarg.h>
  16 #include <string.h>
  17 #include <netdb.h>
  18 #include <termios.h>
  19 #include <sys/socket.h>
  20 
  21 #include <glib.h>
  22 
  23 #include <crm/crm.h>
  24 #include <crm/cib/internal.h>
  25 #include <crm/common/ipc_internal.h>
  26 #include <crm/common/mainloop.h>
  27 #include <crm/common/xml.h>
  28 #include <crm/common/remote_internal.h>
  29 #include <crm/common/output_internal.h>
  30 
  31 #ifdef HAVE_GNUTLS_GNUTLS_H
  32 
  33 #  include <gnutls/gnutls.h>
  34 
  35 // GnuTLS handshake timeout in seconds
  36 #define TLS_HANDSHAKE_TIMEOUT 5
  37 
  38 static gnutls_anon_client_credentials_t anon_cred_c;
  39 static gboolean remote_gnutls_credentials_init = FALSE;
  40 
  41 #endif // HAVE_GNUTLS_GNUTLS_H
  42 
  43 #include <arpa/inet.h>
  44 
  45 typedef struct cib_remote_opaque_s {
  46     int port;
  47     char *server;
  48     char *user;
  49     char *passwd;
  50     gboolean encrypted;
  51     pcmk__remote_t command;
  52     pcmk__remote_t callback;
  53     pcmk__output_t *out;
  54     time_t start_time;
  55     int timeout_sec;
  56 } cib_remote_opaque_t;
  57 
  58 static int
  59 cib_remote_perform_op(cib_t *cib, const char *op, const char *host,
     /*  */
  60                       const char *section, xmlNode *data,
  61                       xmlNode **output_data, int call_options,
  62                       const char *user_name)
  63 {
  64     int rc;
  65     int remaining_time = 0;
  66     time_t start_time;
  67 
  68     xmlNode *op_msg = NULL;
  69     xmlNode *op_reply = NULL;
  70 
  71     cib_remote_opaque_t *private = cib->variant_opaque;
  72 
  73     if (cib->state == cib_disconnected) {
  74         return -ENOTCONN;
  75     }
  76 
  77     if (output_data != NULL) {
  78         *output_data = NULL;
  79     }
  80 
  81     if (op == NULL) {
  82         crm_err("No operation specified");
  83         return -EINVAL;
  84     }
  85 
  86     rc = cib__create_op(cib, op, host, section, data, call_options, user_name,
  87                         NULL, &op_msg);
  88     if (rc != pcmk_ok) {
  89         return rc;
  90     }
  91 
  92     if (pcmk_is_set(call_options, cib_transaction)) {
  93         rc = cib__extend_transaction(cib, op_msg);
  94         free_xml(op_msg);
  95         return rc;
  96     }
  97 
  98     crm_trace("Sending %s message to the CIB manager", op);
  99     if (!(call_options & cib_sync_call)) {
 100         pcmk__remote_send_xml(&private->callback, op_msg);
 101     } else {
 102         pcmk__remote_send_xml(&private->command, op_msg);
 103     }
 104     free_xml(op_msg);
 105 
 106     if ((call_options & cib_discard_reply)) {
 107         crm_trace("Discarding reply");
 108         return pcmk_ok;
 109 
 110     } else if (!(call_options & cib_sync_call)) {
 111         return cib->call_id;
 112     }
 113 
 114     crm_trace("Waiting for a synchronous reply");
 115 
 116     start_time = time(NULL);
 117     remaining_time = cib->call_timeout ? cib->call_timeout : 60;
 118 
 119     rc = pcmk_rc_ok;
 120     while (remaining_time > 0 && (rc != ENOTCONN)) {
 121         int reply_id = -1;
 122         int msg_id = cib->call_id;
 123 
 124         rc = pcmk__read_remote_message(&private->command,
 125                                        remaining_time * 1000);
 126         op_reply = pcmk__remote_message_xml(&private->command);
 127 
 128         if (!op_reply) {
 129             break;
 130         }
 131 
 132         crm_element_value_int(op_reply, PCMK__XA_CIB_CALLID, &reply_id);
 133 
 134         if (reply_id == msg_id) {
 135             break;
 136 
 137         } else if (reply_id < msg_id) {
 138             crm_debug("Received old reply: %d (wanted %d)", reply_id, msg_id);
 139             crm_log_xml_trace(op_reply, "Old reply");
 140 
 141         } else if ((reply_id - 10000) > msg_id) {
 142             /* wrap-around case */
 143             crm_debug("Received old reply: %d (wanted %d)", reply_id, msg_id);
 144             crm_log_xml_trace(op_reply, "Old reply");
 145         } else {
 146             crm_err("Received a __future__ reply:" " %d (wanted %d)", reply_id, msg_id);
 147         }
 148 
 149         free_xml(op_reply);
 150         op_reply = NULL;
 151 
 152         /* wasn't the right reply, try and read some more */
 153         remaining_time = time(NULL) - start_time;
 154     }
 155 
 156     if (rc == ENOTCONN) {
 157         crm_err("Disconnected while waiting for reply.");
 158         return -ENOTCONN;
 159     } else if (op_reply == NULL) {
 160         crm_err("No reply message - empty");
 161         return -ENOMSG;
 162     }
 163 
 164     crm_trace("Synchronous reply received");
 165 
 166     /* Start processing the reply... */
 167     if (crm_element_value_int(op_reply, PCMK__XA_CIB_RC, &rc) != 0) {
 168         rc = -EPROTO;
 169     }
 170 
 171     if (rc == -pcmk_err_diff_resync) {
 172         /* This is an internal value that clients do not and should not care about */
 173         rc = pcmk_ok;
 174     }
 175 
 176     if (rc == pcmk_ok || rc == -EPERM) {
 177         crm_log_xml_debug(op_reply, "passed");
 178 
 179     } else {
 180         crm_err("Call failed: %s", pcmk_strerror(rc));
 181         crm_log_xml_warn(op_reply, "failed");
 182     }
 183 
 184     if (output_data == NULL) {
 185         /* do nothing more */
 186 
 187     } else if (!(call_options & cib_discard_reply)) {
 188         xmlNode *wrapper = pcmk__xe_first_child(op_reply, PCMK__XE_CIB_CALLDATA,
 189                                                 NULL, NULL);
 190         xmlNode *tmp = pcmk__xe_first_child(wrapper, NULL, NULL, NULL);
 191 
 192         if (tmp == NULL) {
 193             crm_trace("No output in reply to \"%s\" command %d", op, cib->call_id - 1);
 194         } else {
 195             *output_data = pcmk__xml_copy(NULL, tmp);
 196         }
 197     }
 198 
 199     free_xml(op_reply);
 200 
 201     return rc;
 202 }
 203 
 204 static int
 205 cib_remote_callback_dispatch(gpointer user_data)
     /*  */
 206 {
 207     int rc;
 208     cib_t *cib = user_data;
 209     cib_remote_opaque_t *private = cib->variant_opaque;
 210 
 211     xmlNode *msg = NULL;
 212     const char *type = NULL;
 213 
 214     /* If start time is 0, we've previously handled a complete message and this
 215      * connection is being reused for a new message.  Reset the start_time,
 216      * giving this new message timeout_sec from now to complete.
 217      */
 218     if (private->start_time == 0) {
 219         private->start_time = time(NULL);
 220     }
 221 
 222     rc = pcmk__read_available_remote_data(&private->callback);
 223     switch (rc) {
 224         case pcmk_rc_ok:
 225             /* We have the whole message so process it */
 226             break;
 227 
 228         case EAGAIN:
 229             /* Have we timed out? */
 230             if (time(NULL) >= private->start_time + private->timeout_sec) {
 231                 crm_info("Error reading from CIB manager connection: %s",
 232                          pcmk_rc_str(ETIME));
 233                 return -1;
 234             }
 235 
 236             /* We haven't read the whole message yet */
 237             return 0;
 238 
 239         default:
 240             /* Error */
 241             crm_info("Error reading from CIB manager connection: %s",
 242                      pcmk_rc_str(rc));
 243             return -1;
 244     }
 245 
 246     msg = pcmk__remote_message_xml(&private->callback);
 247     if (msg == NULL) {
 248         private->start_time = 0;
 249         return 0;
 250     }
 251 
 252     type = crm_element_value(msg, PCMK__XA_T);
 253 
 254     crm_trace("Activating %s callbacks...", type);
 255 
 256     if (pcmk__str_eq(type, PCMK__VALUE_CIB, pcmk__str_none)) {
 257         cib_native_callback(cib, msg, 0, 0);
 258     } else if (pcmk__str_eq(type, PCMK__VALUE_CIB_NOTIFY, pcmk__str_none)) {
 259         g_list_foreach(cib->notify_list, cib_native_notify, msg);
 260     } else {
 261         crm_err("Unknown message type: %s", type);
 262     }
 263 
 264     free_xml(msg);
 265     private->start_time = 0;
 266     return 0;
 267 }
 268 
 269 static int
 270 cib_remote_command_dispatch(gpointer user_data)
     /*  */
 271 {
 272     int rc;
 273     cib_t *cib = user_data;
 274     cib_remote_opaque_t *private = cib->variant_opaque;
 275 
 276     /* See cib_remote_callback_dispatch */
 277     if (private->start_time == 0) {
 278         private->start_time = time(NULL);
 279     }
 280 
 281     rc = pcmk__read_available_remote_data(&private->command);
 282     if (rc == EAGAIN) {
 283         /* Have we timed out? */
 284         if (time(NULL) >= private->start_time + private->timeout_sec) {
 285             crm_info("Error reading from CIB manager connection: %s",
 286                      pcmk_rc_str(ETIME));
 287             return -1;
 288         }
 289 
 290         /* We haven't read the whole message yet */
 291         return 0;
 292     }
 293 
 294     free(private->command.buffer);
 295     private->command.buffer = NULL;
 296     crm_err("received late reply for remote cib connection, discarding");
 297 
 298     if (rc != pcmk_rc_ok) {
 299         crm_info("Error reading from CIB manager connection: %s",
 300                  pcmk_rc_str(rc));
 301         return -1;
 302     }
 303 
 304     private->start_time = 0;
 305     return 0;
 306 }
 307 
 308 static int
 309 cib_tls_close(cib_t *cib)
     /*  */
 310 {
 311     cib_remote_opaque_t *private = cib->variant_opaque;
 312 
 313 #ifdef HAVE_GNUTLS_GNUTLS_H
 314     if (private->encrypted) {
 315         if (private->command.tls_session) {
 316             gnutls_bye(*(private->command.tls_session), GNUTLS_SHUT_RDWR);
 317             gnutls_deinit(*(private->command.tls_session));
 318             gnutls_free(private->command.tls_session);
 319         }
 320 
 321         if (private->callback.tls_session) {
 322             gnutls_bye(*(private->callback.tls_session), GNUTLS_SHUT_RDWR);
 323             gnutls_deinit(*(private->callback.tls_session));
 324             gnutls_free(private->callback.tls_session);
 325         }
 326         private->command.tls_session = NULL;
 327         private->callback.tls_session = NULL;
 328         if (remote_gnutls_credentials_init) {
 329             gnutls_anon_free_client_credentials(anon_cred_c);
 330             gnutls_global_deinit();
 331             remote_gnutls_credentials_init = FALSE;
 332         }
 333     }
 334 #endif
 335 
 336     if (private->command.tcp_socket) {
 337         shutdown(private->command.tcp_socket, SHUT_RDWR);       /* no more receptions */
 338         close(private->command.tcp_socket);
 339     }
 340     if (private->callback.tcp_socket) {
 341         shutdown(private->callback.tcp_socket, SHUT_RDWR);      /* no more receptions */
 342         close(private->callback.tcp_socket);
 343     }
 344     private->command.tcp_socket = 0;
 345     private->callback.tcp_socket = 0;
 346 
 347     free(private->command.buffer);
 348     free(private->callback.buffer);
 349     private->command.buffer = NULL;
 350     private->callback.buffer = NULL;
 351 
 352     return 0;
 353 }
 354 
 355 static void
 356 cib_remote_connection_destroy(gpointer user_data)
     /*  */
 357 {
 358     crm_err("Connection destroyed");
 359 #ifdef HAVE_GNUTLS_GNUTLS_H
 360     cib_tls_close(user_data);
 361 #endif
 362 }
 363 
 364 static int
 365 cib_tls_signon(cib_t *cib, pcmk__remote_t *connection, gboolean event_channel)
     /*  */
 366 {
 367     cib_remote_opaque_t *private = cib->variant_opaque;
 368     int rc;
 369 
 370     xmlNode *answer = NULL;
 371     xmlNode *login = NULL;
 372 
 373     static struct mainloop_fd_callbacks cib_fd_callbacks = { 0, };
 374 
 375     cib_fd_callbacks.dispatch =
 376         event_channel ? cib_remote_callback_dispatch : cib_remote_command_dispatch;
 377     cib_fd_callbacks.destroy = cib_remote_connection_destroy;
 378 
 379     connection->tcp_socket = -1;
 380 #ifdef HAVE_GNUTLS_GNUTLS_H
 381     connection->tls_session = NULL;
 382 #endif
 383     rc = pcmk__connect_remote(private->server, private->port, 0, NULL,
 384                               &(connection->tcp_socket), NULL, NULL);
 385     if (rc != pcmk_rc_ok) {
 386         crm_info("Remote connection to %s:%d failed: %s " CRM_XS " rc=%d",
 387                  private->server, private->port, pcmk_rc_str(rc), rc);
 388         return -ENOTCONN;
 389     }
 390 
 391     if (private->encrypted) {
 392         int tls_rc = GNUTLS_E_SUCCESS;
 393 
 394         /* initialize GnuTls lib */
 395 #ifdef HAVE_GNUTLS_GNUTLS_H
 396         if (remote_gnutls_credentials_init == FALSE) {
 397             crm_gnutls_global_init();
 398             gnutls_anon_allocate_client_credentials(&anon_cred_c);
 399             remote_gnutls_credentials_init = TRUE;
 400         }
 401 
 402         /* bind the socket to GnuTls lib */
 403         connection->tls_session = pcmk__new_tls_session(connection->tcp_socket,
 404                                                         GNUTLS_CLIENT,
 405                                                         GNUTLS_CRD_ANON,
 406                                                         anon_cred_c);
 407         if (connection->tls_session == NULL) {
 408             cib_tls_close(cib);
 409             return -1;
 410         }
 411 
 412         rc = pcmk__tls_client_handshake(connection, TLS_HANDSHAKE_TIMEOUT,
 413                                         &tls_rc);
 414         if (rc != pcmk_rc_ok) {
 415             crm_err("Remote CIB session creation for %s:%d failed: %s",
 416                     private->server, private->port,
 417                     (rc == EPROTO)? gnutls_strerror(tls_rc) : pcmk_rc_str(rc));
 418             gnutls_deinit(*connection->tls_session);
 419             gnutls_free(connection->tls_session);
 420             connection->tls_session = NULL;
 421             cib_tls_close(cib);
 422             return -1;
 423         }
 424 #else
 425         return -EPROTONOSUPPORT;
 426 #endif
 427     }
 428 
 429     /* login to server */
 430     login = pcmk__xe_create(NULL, PCMK__XE_CIB_COMMAND);
 431     crm_xml_add(login, PCMK_XA_OP, "authenticate");
 432     crm_xml_add(login, PCMK_XA_USER, private->user);
 433     crm_xml_add(login, PCMK__XA_PASSWORD, private->passwd);
 434     crm_xml_add(login, PCMK__XA_HIDDEN, PCMK__VALUE_PASSWORD);
 435 
 436     pcmk__remote_send_xml(connection, login);
 437     free_xml(login);
 438 
 439     rc = pcmk_ok;
 440     if (pcmk__read_remote_message(connection, -1) == ENOTCONN) {
 441         rc = -ENOTCONN;
 442     }
 443 
 444     answer = pcmk__remote_message_xml(connection);
 445 
 446     crm_log_xml_trace(answer, "Reply");
 447     if (answer == NULL) {
 448         rc = -EPROTO;
 449 
 450     } else {
 451         /* grab the token */
 452         const char *msg_type = crm_element_value(answer, PCMK__XA_CIB_OP);
 453         const char *tmp_ticket = crm_element_value(answer,
 454                                                    PCMK__XA_CIB_CLIENTID);
 455 
 456         if (!pcmk__str_eq(msg_type, CRM_OP_REGISTER, pcmk__str_casei)) {
 457             crm_err("Invalid registration message: %s", msg_type);
 458             rc = -EPROTO;
 459 
 460         } else if (tmp_ticket == NULL) {
 461             rc = -EPROTO;
 462 
 463         } else {
 464             connection->token = strdup(tmp_ticket);
 465         }
 466     }
 467     free_xml(answer);
 468     answer = NULL;
 469 
 470     if (rc != 0) {
 471         cib_tls_close(cib);
 472         return rc;
 473     }
 474 
 475     crm_trace("remote client connection established");
 476     private->timeout_sec = 60;
 477     connection->source = mainloop_add_fd("cib-remote", G_PRIORITY_HIGH,
 478                                          connection->tcp_socket, cib,
 479                                          &cib_fd_callbacks);
 480     return rc;
 481 }
 482 
 483 static int
 484 cib_remote_signon(cib_t *cib, const char *name, enum cib_conn_type type)
     /*  */
 485 {
 486     int rc = pcmk_ok;
 487     cib_remote_opaque_t *private = cib->variant_opaque;
 488     xmlNode *hello = NULL;
 489 
 490     if (private->passwd == NULL) {
 491         if (private->out == NULL) {
 492             /* If no pcmk__output_t is set, just assume that a text prompt
 493              * is good enough.
 494              */
 495             pcmk__text_prompt("Password", false, &(private->passwd));
 496         } else {
 497             private->out->prompt("Password", false, &(private->passwd));
 498         }
 499     }
 500 
 501     if (private->server == NULL || private->user == NULL) {
 502         rc = -EINVAL;
 503     }
 504 
 505     if (rc == pcmk_ok) {
 506         rc = cib_tls_signon(cib, &(private->command), FALSE);
 507     }
 508 
 509     if (rc == pcmk_ok) {
 510         rc = cib_tls_signon(cib, &(private->callback), TRUE);
 511     }
 512 
 513     if (rc == pcmk_ok) {
 514         rc = cib__create_op(cib, CRM_OP_REGISTER, NULL, NULL, NULL, cib_none,
 515                             NULL, name, &hello);
 516     }
 517 
 518     if (rc == pcmk_ok) {
 519         rc = pcmk__remote_send_xml(&private->command, hello);
 520         rc = pcmk_rc2legacy(rc);
 521         free_xml(hello);
 522     }
 523 
 524     if (rc == pcmk_ok) {
 525         crm_info("Opened connection to %s:%d for %s",
 526                  private->server, private->port, name);
 527         cib->state = cib_connected_command;
 528         cib->type = cib_command;
 529 
 530     } else {
 531         crm_info("Connection to %s:%d for %s failed: %s\n",
 532                  private->server, private->port, name, pcmk_strerror(rc));
 533     }
 534 
 535     return rc;
 536 }
 537 
 538 static int
 539 cib_remote_signoff(cib_t *cib)
     /*  */
 540 {
 541     int rc = pcmk_ok;
 542 
 543     crm_debug("Disconnecting from the CIB manager");
 544 #ifdef HAVE_GNUTLS_GNUTLS_H
 545     cib_tls_close(cib);
 546 #endif
 547 
 548     cib->cmds->end_transaction(cib, false, cib_none);
 549     cib->state = cib_disconnected;
 550     cib->type = cib_no_connection;
 551 
 552     return rc;
 553 }
 554 
 555 static int
 556 cib_remote_free(cib_t *cib)
     /*  */
 557 {
 558     int rc = pcmk_ok;
 559 
 560     crm_warn("Freeing CIB");
 561     if (cib->state != cib_disconnected) {
 562         rc = cib_remote_signoff(cib);
 563         if (rc == pcmk_ok) {
 564             cib_remote_opaque_t *private = cib->variant_opaque;
 565 
 566             free(private->server);
 567             free(private->user);
 568             free(private->passwd);
 569             free(cib->cmds);
 570             free(cib->user);
 571             free(private);
 572             free(cib);
 573         }
 574     }
 575 
 576     return rc;
 577 }
 578 
 579 static int
 580 cib_remote_inputfd(cib_t * cib)
     /*  */
 581 {
 582     cib_remote_opaque_t *private = cib->variant_opaque;
 583 
 584     return private->callback.tcp_socket;
 585 }
 586 
 587 static int
 588 cib_remote_register_notification(cib_t * cib, const char *callback, int enabled)
     /*  */
 589 {
 590     xmlNode *notify_msg = pcmk__xe_create(NULL, PCMK__XE_CIB_COMMAND);
 591     cib_remote_opaque_t *private = cib->variant_opaque;
 592 
 593     crm_xml_add(notify_msg, PCMK__XA_CIB_OP, PCMK__VALUE_CIB_NOTIFY);
 594     crm_xml_add(notify_msg, PCMK__XA_CIB_NOTIFY_TYPE, callback);
 595     crm_xml_add_int(notify_msg, PCMK__XA_CIB_NOTIFY_ACTIVATE, enabled);
 596     pcmk__remote_send_xml(&private->callback, notify_msg);
 597     free_xml(notify_msg);
 598     return pcmk_ok;
 599 }
 600 
 601 static int
 602 cib_remote_set_connection_dnotify(cib_t * cib, void (*dnotify) (gpointer user_data))
     /*  */
 603 {
 604     return -EPROTONOSUPPORT;
 605 }
 606 
 607 /*!
 608  * \internal
 609  * \brief Get the given CIB connection's unique client identifiers
 610  *
 611  * These can be used to check whether this client requested the action that
 612  * triggered a CIB notification.
 613  *
 614  * \param[in]  cib       CIB connection
 615  * \param[out] async_id  If not \p NULL, where to store asynchronous client ID
 616  * \param[out] sync_id   If not \p NULL, where to store synchronous client ID
 617  *
 618  * \return Legacy Pacemaker return code (specifically, \p pcmk_ok)
 619  *
 620  * \note This is the \p cib_remote variant implementation of
 621  *       \p cib_api_operations_t:client_id().
 622  * \note The client IDs are assigned during CIB sign-on.
 623  */
 624 static int
 625 cib_remote_client_id(const cib_t *cib, const char **async_id,
     /*  */
 626                      const char **sync_id)
 627 {
 628     cib_remote_opaque_t *private = cib->variant_opaque;
 629 
 630     if (async_id != NULL) {
 631         // private->callback is the channel for async requests
 632         *async_id = private->callback.token;
 633     }
 634     if (sync_id != NULL) {
 635         // private->command is the channel for sync requests
 636         *sync_id = private->command.token;
 637     }
 638     return pcmk_ok;
 639 }
 640 
 641 cib_t *
 642 cib_remote_new(const char *server, const char *user, const char *passwd, int port,
     /*  */
 643                gboolean encrypted)
 644 {
 645     cib_remote_opaque_t *private = NULL;
 646     cib_t *cib = cib_new_variant();
 647 
 648     if (cib == NULL) {
 649         return NULL;
 650     }
 651 
 652     private = calloc(1, sizeof(cib_remote_opaque_t));
 653 
 654     if (private == NULL) {
 655         free(cib);
 656         return NULL;
 657     }
 658 
 659     cib->variant = cib_remote;
 660     cib->variant_opaque = private;
 661 
 662     private->server = pcmk__str_copy(server);
 663     private->user = pcmk__str_copy(user);
 664     private->passwd = pcmk__str_copy(passwd);
 665     private->port = port;
 666     private->encrypted = encrypted;
 667 
 668     /* assign variant specific ops */
 669     cib->delegate_fn = cib_remote_perform_op;
 670     cib->cmds->signon = cib_remote_signon;
 671     cib->cmds->signoff = cib_remote_signoff;
 672     cib->cmds->free = cib_remote_free;
 673     cib->cmds->inputfd = cib_remote_inputfd; // Deprecated method
 674 
 675     cib->cmds->register_notification = cib_remote_register_notification;
 676     cib->cmds->set_connection_dnotify = cib_remote_set_connection_dnotify;
 677 
 678     cib->cmds->client_id = cib_remote_client_id;
 679 
 680     return cib;
 681 }
 682 
 683 void
 684 cib__set_output(cib_t *cib, pcmk__output_t *out)
     /*  */
 685 {
 686     cib_remote_opaque_t *private;
 687 
 688     if (cib->variant != cib_remote) {
 689         return;
 690     }
 691 
 692     private = cib->variant_opaque;
 693     private->out = out;
 694 }
/* */
root/lib/cib/cib_remote.c

DEFINITIONS
