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	diff --git a/cib/callbacks.c b/cib/callbacks.c
	index 73252c99cb..3b149e0fa3 100644
	--- a/cib/callbacks.c
	+++ b/cib/callbacks.c
	@@ -1,1343 +1,1353 @@
	/*
	* Copyright (C) 2004 Andrew Beekhof <andrew@beekhof.net>
	*
	* This program is free software; you can redistribute it and/or
	* modify it under the terms of the GNU General Public
	* License as published by the Free Software Foundation; either
	* version 2 of the License, or (at your option) any later version.
	*
	* This software is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* General Public License for more details.
	*
	* You should have received a copy of the GNU General Public
	* License along with this library; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	*/

	#include <crm_internal.h>

	#include <sys/param.h>
	#include <stdio.h>
	#include <sys/types.h>
	#include <unistd.h>

	#include <stdlib.h>
	#include <errno.h>
	#include <fcntl.h>

	#include <crm/crm.h>
	#include <crm/cib.h>
	#include <crm/msg_xml.h>
	#include <crm/common/ipc.h>
	#include <crm/cluster.h>

	#include <crm/common/xml.h>


	#include <cibio.h>
	#include <callbacks.h>
	#include <cibmessages.h>
	#include <notify.h>
	#include "common.h"

	extern GMainLoop *mainloop;
	extern gboolean cib_shutdown_flag;
	extern gboolean stand_alone;
	extern const char *cib_root;

	qb_ipcs_service_t *ipcs_ro = NULL;
	qb_ipcs_service_t *ipcs_rw = NULL;
	qb_ipcs_service_t *ipcs_shm = NULL;

	#if SUPPORT_HEARTBEAT
	extern ll_cluster_t *hb_conn;
	#endif

	extern enum cib_errors cib_update_counter(xmlNode * xml_obj, const char *field, gboolean reset);

	extern void GHFunc_count_peers(gpointer key, gpointer value, gpointer user_data);

	gint cib_GCompareFunc(gconstpointer a, gconstpointer b);
	gboolean can_write(int flags);
	void send_cib_replace(const xmlNode * sync_request, const char *host);
	void cib_process_request(xmlNode * request, gboolean privileged, gboolean force_synchronous,
	gboolean from_peer, cib_client_t * cib_client);

	extern GHashTable *client_list;

	int next_client_id = 0;
	extern const char *cib_our_uname;
	extern unsigned long cib_num_ops, cib_num_local, cib_num_updates, cib_num_fail;
	extern unsigned long cib_bad_connects, cib_num_timeouts;
	extern enum cib_errors cib_status;

	enum cib_errors cib_process_command(xmlNode * request, xmlNode ** reply,
	xmlNode ** cib_diff, gboolean privileged);

	gboolean cib_common_callback(qb_ipcs_connection_t c, void data, size_t size, gboolean privileged);

	static int32_t
	cib_ipc_accept(qb_ipcs_connection_t *c, uid_t uid, gid_t gid)
	{
	crm_trace("Connecting %p for uid=%d gid=%d pid=%d", c, uid, gid, crm_ipcs_client_pid(c));
	if (cib_shutdown_flag) {
	crm_info("Ignoring new client [%d] during shutdown", crm_ipcs_client_pid(c));
	return -EPERM;
	}
	return 0;
	}

	static void
	cib_ipc_created(qb_ipcs_connection_t *c)
	{
	cib_client_t *new_client = NULL;

	new_client = calloc(1, sizeof(cib_client_t));
	new_client->ipc = c;

	CRM_CHECK(new_client->id == NULL, free(new_client->id));
	new_client->id = crm_generate_uuid();
	crm_trace("%p connected for client %s", c, new_client->id);

	/* make sure we can find ourselves later for sync calls
	* redirected to the master instance
	*/
	g_hash_table_insert(client_list, new_client->id, new_client);

	qb_ipcs_context_set(c, new_client);
	}

	static int32_t
	cib_ipc_dispatch_rw(qb_ipcs_connection_t c, void data, size_t size)
	{
	cib_client_t *cib_client = qb_ipcs_context_get(c);
	crm_trace("%p message from %s", c, cib_client->id);
	return cib_common_callback(c, data, size, TRUE);
	}

	static int32_t
	cib_ipc_dispatch_ro(qb_ipcs_connection_t c, void data, size_t size)
	{
	cib_client_t *cib_client = qb_ipcs_context_get(c);
	crm_trace("%p message from %s", c, cib_client->id);
	return cib_common_callback(c, data, size, FALSE);
	}

	/* Error code means? */
	static int32_t
	cib_ipc_closed(qb_ipcs_connection_t *c)
	{
	cib_client_t *cib_client = qb_ipcs_context_get(c);
	crm_trace("Connection %p closed", c);

	CRM_ASSERT(cib_client != NULL);
	CRM_ASSERT(cib_client->id != NULL);

	if (!g_hash_table_remove(client_list, cib_client->id)) {
	crm_err("Client %s not found in the hashtable", cib_client->name);
	}

	return 0;
	}

	static void
	cib_ipc_destroy(qb_ipcs_connection_t *c)
	{
	cib_client_t *cib_client = qb_ipcs_context_get(c);

	CRM_ASSERT(cib_client != NULL);
	CRM_ASSERT(cib_client->id != NULL);

	/* In case we arrive here without a call to cib_ipc_close() */
	g_hash_table_remove(client_list, cib_client->id);

	crm_trace("Destroying %s (%p)", cib_client->name, c);
	free(cib_client->name);
	free(cib_client->callback_id);
	free(cib_client->id);
	free(cib_client->user);
	free(cib_client);
	crm_trace("Freed the cib client");

	if (cib_shutdown_flag) {
	cib_shutdown(0);
	}
	}

	struct qb_ipcs_service_handlers ipc_ro_callbacks =
	{
	.connection_accept = cib_ipc_accept,
	.connection_created = cib_ipc_created,
	.msg_process = cib_ipc_dispatch_ro,
	.connection_closed = cib_ipc_closed,
	.connection_destroyed = cib_ipc_destroy
	};

	struct qb_ipcs_service_handlers ipc_rw_callbacks =
	{
	.connection_accept = cib_ipc_accept,
	.connection_created = cib_ipc_created,
	.msg_process = cib_ipc_dispatch_rw,
	.connection_closed = cib_ipc_closed,
	.connection_destroyed = cib_ipc_destroy
	};

	void
	cib_common_callback_worker(xmlNode * op_request, cib_client_t * cib_client, gboolean privileged)
	{
	const char *op = crm_element_value(op_request, F_CIB_OPERATION);

	if (crm_str_eq(op, CRM_OP_REGISTER, TRUE)) {
	xmlNode *ack = create_xml_node(NULL, __FUNCTION__);

	crm_xml_add(ack, F_CIB_OPERATION, CRM_OP_REGISTER);
	crm_xml_add(ack, F_CIB_CLIENTID, cib_client->id);
	crm_ipcs_send(cib_client->ipc, ack, FALSE);
	free_xml(ack);
	return;

	} else if (crm_str_eq(op, T_CIB_NOTIFY, TRUE)) {
	/* Update the notify filters for this client */
	int on_off = 0;
	int rc = cib_ok;
	const char *type = crm_element_value(op_request, F_CIB_NOTIFY_TYPE);
	crm_element_value_int(op_request, F_CIB_NOTIFY_ACTIVATE, &on_off);

	crm_debug("Setting %s callbacks for %s (%s): %s",
	type, cib_client->name, cib_client->id, on_off ? "on" : "off");

	if (safe_str_eq(type, T_CIB_POST_NOTIFY)) {
	cib_client->post_notify = on_off;

	} else if (safe_str_eq(type, T_CIB_PRE_NOTIFY)) {
	cib_client->pre_notify = on_off;

	} else if (safe_str_eq(type, T_CIB_UPDATE_CONFIRM)) {
	cib_client->confirmations = on_off;

	} else if (safe_str_eq(type, T_CIB_DIFF_NOTIFY)) {
	cib_client->diffs = on_off;

	} else if (safe_str_eq(type, T_CIB_REPLACE_NOTIFY)) {
	cib_client->replace = on_off;
	} else {
	rc = cib_NOTEXISTS;
	}
	/* Already ack'd */
	return;
	}

	cib_client->num_calls++;
	cib_process_request(op_request, FALSE, privileged, FALSE, cib_client);
	}

	int32_t
	cib_common_callback(qb_ipcs_connection_t c, void data, size_t size, gboolean privileged)
	{
	int call_options = 0;
	+ const char *op = NULL;
	+ const char *call = NULL;
	xmlNode *op_request = crm_ipcs_recv(c, data, size);
	cib_client_t *cib_client = qb_ipcs_context_get(c);

	if(op_request) {
	+ op = crm_element_value(op_request, F_CIB_OPERATION);
	+ call = crm_element_value(op_request, F_CIB_CALLID);
	crm_element_value_int(op_request, F_CIB_CALLOPTS, &call_options);
	}

	- crm_trace("Inbound: %.120s", data);
	+ crm_trace("Inbound: %.200s", data);
	if (op_request == NULL \|\| cib_client == NULL) {
	xmlNode *ack = create_xml_node(NULL, "nack");

	crm_trace("Sending nack to %p", cib_client);
	+ crm_xml_add(ack, F_CIB_CALLID, call);
	+ crm_xml_add(ack, F_CIB_OPERATION, op);
	+ crm_xml_add(ack, XML_ATTR_ORIGIN, __FUNCTION__);
	crm_ipcs_send(c, ack, FALSE);
	free_xml(ack);
	return 0;

	} else if((call_options & cib_sync_call) == 0) {
	xmlNode *ack = create_xml_node(NULL, "ack");

	- crm_trace("Sending a-sync ack");
	+ crm_trace("Sending a-sync ack to %p", cib_client);
	+ crm_xml_add(ack, F_CIB_CALLID, call);
	+ crm_xml_add(ack, F_CIB_OPERATION, op);
	+ crm_xml_add(ack, XML_ATTR_ORIGIN, __FUNCTION__);
	crm_ipcs_send(c, ack, FALSE);
	free_xml(ack);
	}

	if (cib_client->name == NULL) {
	const char *value = crm_element_value(op_request, F_CIB_CLIENTNAME);
	if (value == NULL) {
	cib_client->name = crm_itoa(crm_ipcs_client_pid(c));
	} else {
	cib_client->name = crm_strdup(value);
	}
	}

	if (cib_client->callback_id == NULL) {
	const char *value = crm_element_value(op_request, F_CIB_CALLBACK_TOKEN);
	if (value != NULL) {
	cib_client->callback_id = crm_strdup(value);

	} else {
	cib_client->callback_id = crm_strdup(cib_client->id);
	}
	}

	crm_xml_add(op_request, F_CIB_CLIENTID, cib_client->id);
	crm_xml_add(op_request, F_CIB_CLIENTNAME, cib_client->name);

	#if ENABLE_ACL
	determine_request_user(&cib_client->user, channel, op_request, F_CIB_USER);
	#endif

	crm_log_xml_trace(op_request, "Client[inbound]");

	cib_common_callback_worker(op_request, cib_client, privileged);

	return 0;
	}

	static void
	do_local_notify(xmlNode * notify_src, const char *client_id,
	gboolean sync_reply, gboolean from_peer)
	{
	/* send callback to originating child */
	cib_client_t *client_obj = NULL;
	enum cib_errors local_rc = cib_ok;

	if (client_id != NULL) {
	client_obj = g_hash_table_lookup(client_list, client_id);
	} else {
	crm_trace("No client to sent the response to. F_CIB_CLIENTID not set.");
	}

	if (client_obj == NULL) {
	local_rc = cib_client_gone;

	} else {
	crm_trace("Sending %ssync response to %s %s",
	sync_reply ? "" : "an a-", client_obj->name,
	from_peer ? "(originator of delegated request)" : "");

	if (client_obj->ipc && crm_ipcs_send(client_obj->ipc, notify_src, !sync_reply) < 0) {
	local_rc = cib_reply_failed;

	#ifdef HAVE_GNUTLS_GNUTLS_H
	} else if (client_obj->session) {
	cib_send_remote_msg(client_obj->session, notify_src, client_obj->encrypted);
	#endif
	} else if(client_obj->ipc == NULL) {
	crm_err("Unknown transport for %s", client_obj->name);
	}
	}

	if (local_rc != cib_ok && client_obj != NULL) {
	crm_warn("%sSync reply to %s failed: %s",
	sync_reply ? "" : "A-",
	client_obj ? client_obj->name : "<unknown>", cib_error2string(local_rc));
	}
	}

	static void
	parse_local_options(cib_client_t * cib_client, int call_type, int call_options, const char *host,
	const char op, gboolean local_notify, gboolean * needs_reply,
	gboolean * process, gboolean * needs_forward)
	{
	if (cib_op_modifies(call_type)
	&& !(call_options & cib_inhibit_bcast)) {
	/* we need to send an update anyway */
	*needs_reply = TRUE;
	} else {
	*needs_reply = FALSE;
	}

	if (host == NULL && (call_options & cib_scope_local)) {
	crm_trace("Processing locally scoped %s op from %s", op, cib_client->name);
	*local_notify = TRUE;

	} else if (host == NULL && cib_is_master) {
	crm_trace("Processing master %s op locally from %s", op, cib_client->name);
	*local_notify = TRUE;

	} else if (safe_str_eq(host, cib_our_uname)) {
	crm_trace("Processing locally addressed %s op from %s", op, cib_client->name);
	*local_notify = TRUE;

	} else if (stand_alone) {
	*needs_forward = FALSE;
	*local_notify = TRUE;
	*process = TRUE;

	} else {
	crm_trace("%s op from %s needs to be forwarded to %s",
	op, cib_client->name, host ? host : "the master instance");
	*needs_forward = TRUE;
	*process = FALSE;
	}
	}

	static gboolean
	parse_peer_options(int call_type, xmlNode * request,
	gboolean * local_notify, gboolean * needs_reply, gboolean * process,
	gboolean * needs_forward)
	{
	const char *op = NULL;
	const char *host = NULL;
	const char *delegated = NULL;
	const char *originator = crm_element_value(request, F_ORIG);
	const char *reply_to = crm_element_value(request, F_CIB_ISREPLY);
	const char *update = crm_element_value(request, F_CIB_GLOBAL_UPDATE);

	gboolean is_reply = safe_str_eq(reply_to, cib_our_uname);

	if (crm_is_true(update)) {
	*needs_reply = FALSE;
	if (is_reply) {
	*local_notify = TRUE;
	crm_trace("Processing global/peer update from %s"
	" that originated from us", originator);
	} else {
	crm_trace("Processing global/peer update from %s", originator);
	}
	return TRUE;
	}

	host = crm_element_value(request, F_CIB_HOST);
	if (host != NULL && safe_str_eq(host, cib_our_uname)) {
	crm_trace("Processing request sent to us from %s", originator);
	return TRUE;

	} else if (host == NULL && cib_is_master == TRUE) {
	crm_trace("Processing request sent to master instance from %s", originator);
	return TRUE;
	}

	op = crm_element_value(request, F_CIB_OPERATION);
	if(safe_str_eq(op, "cib_shutdown_req")) {
	/* Always process these */
	*local_notify = FALSE;
	if(reply_to == NULL \|\| is_reply) {
	*process = TRUE;
	}
	if(is_reply) {
	*needs_reply = FALSE;
	}
	return *process;
	}

	if (is_reply) {
	crm_trace("Forward reply sent from %s to local clients", originator);
	*process = FALSE;
	*needs_reply = FALSE;
	*local_notify = TRUE;
	return TRUE;
	}

	delegated = crm_element_value(request, F_CIB_DELEGATED);
	if (delegated != NULL) {
	crm_trace("Ignoring msg for master instance");

	} else if (host != NULL) {
	/* this is for a specific instance and we're not it */
	crm_trace("Ignoring msg for instance on %s", crm_str(host));

	} else if (reply_to == NULL && cib_is_master == FALSE) {
	/* this is for the master instance and we're not it */
	crm_trace("Ignoring reply to %s", crm_str(reply_to));

	} else if (safe_str_eq(op, "cib_shutdown_req")) {
	if (reply_to != NULL) {
	crm_debug("Processing %s from %s", op, host);
	*needs_reply = FALSE;

	} else {
	crm_debug("Processing %s reply from %s", op, host);
	}
	return TRUE;

	} else {
	crm_err("Nothing for us to do?");
	crm_log_xml_err(request, "Peer[inbound]");
	}

	return FALSE;
	}

	static void
	forward_request(xmlNode * request, cib_client_t * cib_client, int call_options)
	{
	const char *op = crm_element_value(request, F_CIB_OPERATION);
	const char *host = crm_element_value(request, F_CIB_HOST);

	crm_xml_add(request, F_CIB_DELEGATED, cib_our_uname);

	if (host != NULL) {
	crm_trace("Forwarding %s op to %s", op, host);
	send_cluster_message(host, crm_msg_cib, request, FALSE);

	} else {
	crm_trace("Forwarding %s op to master instance", op);
	send_cluster_message(NULL, crm_msg_cib, request, FALSE);
	}

	/* Return the request to its original state */
	xml_remove_prop(request, F_CIB_DELEGATED);

	if (call_options & cib_discard_reply) {
	crm_trace("Client not interested in reply");
	}
	}

	static void
	send_peer_reply(xmlNode * msg, xmlNode * result_diff, const char *originator, gboolean broadcast)
	{
	CRM_ASSERT(msg != NULL);

	if (broadcast) {
	/* this (successful) call modified the CIB _and_ the
	* change needs to be broadcast...
	* send via HA to other nodes
	*/
	int diff_add_updates = 0;
	int diff_add_epoch = 0;
	int diff_add_admin_epoch = 0;

	int diff_del_updates = 0;
	int diff_del_epoch = 0;
	int diff_del_admin_epoch = 0;

	char *digest = NULL;

	cib_diff_version_details(result_diff,
	&diff_add_admin_epoch, &diff_add_epoch, &diff_add_updates,
	&diff_del_admin_epoch, &diff_del_epoch, &diff_del_updates);

	crm_trace("Sending update diff %d.%d.%d -> %d.%d.%d",
	diff_del_admin_epoch, diff_del_epoch, diff_del_updates,
	diff_add_admin_epoch, diff_add_epoch, diff_add_updates);

	crm_xml_add(msg, F_CIB_ISREPLY, originator);
	crm_xml_add(msg, F_CIB_GLOBAL_UPDATE, XML_BOOLEAN_TRUE);
	crm_xml_add(msg, F_CIB_OPERATION, CIB_OP_APPLY_DIFF);

	/* Its safe to always use the latest version since the election
	* ensures the software on this node is the oldest node in the cluster
	*/
	digest = calculate_xml_versioned_digest(the_cib, FALSE, TRUE, CRM_FEATURE_SET);
	crm_xml_add(result_diff, XML_ATTR_DIGEST, digest);
	crm_log_xml_trace(the_cib, digest);
	free(digest);

	add_message_xml(msg, F_CIB_UPDATE_DIFF, result_diff);
	crm_log_xml_trace(msg, "copy");
	send_cluster_message(NULL, crm_msg_cib, msg, TRUE);

	} else if (originator != NULL) {
	/* send reply via HA to originating node */
	crm_trace("Sending request result to originator only");
	crm_xml_add(msg, F_CIB_ISREPLY, originator);
	send_cluster_message(originator, crm_msg_cib, msg, FALSE);
	}
	}

	void
	cib_process_request(xmlNode * request, gboolean force_synchronous, gboolean privileged,
	gboolean from_peer, cib_client_t * cib_client)
	{
	int call_type = 0;
	int call_options = 0;

	gboolean process = TRUE;
	gboolean is_update = TRUE;
	gboolean needs_reply = TRUE;
	gboolean local_notify = FALSE;
	gboolean needs_forward = FALSE;
	gboolean global_update = crm_is_true(crm_element_value(request, F_CIB_GLOBAL_UPDATE));

	xmlNode *op_reply = NULL;
	xmlNode *result_diff = NULL;

	enum cib_errors rc = cib_ok;
	const char *op = crm_element_value(request, F_CIB_OPERATION);
	const char *originator = crm_element_value(request, F_ORIG);
	const char *host = crm_element_value(request, F_CIB_HOST);

	crm_trace("%s Processing msg %s", cib_our_uname, crm_element_value(request, F_SEQ));

	cib_num_ops++;
	if (cib_num_ops == 0) {
	cib_num_fail = 0;
	cib_num_local = 0;
	cib_num_updates = 0;
	crm_info("Stats wrapped around");
	}

	if (host != NULL && strlen(host) == 0) {
	host = NULL;
	}

	crm_element_value_int(request, F_CIB_CALLOPTS, &call_options);
	if (force_synchronous) {
	call_options \|= cib_sync_call;
	}

	crm_trace("Processing %s message (%s) for %s...",
	from_peer ? "peer" : "local",
	from_peer ? originator : cib_our_uname, host ? host : "master");

	rc = cib_get_operation_id(op, &call_type);
	if (rc != cib_ok) {
	/* TODO: construct error reply? */
	crm_err("Pre-processing of command failed: %s", cib_error2string(rc));
	return;
	}

	is_update = cib_op_modifies(call_type);
	if (is_update) {
	cib_num_updates++;
	}

	if (from_peer == FALSE) {
	parse_local_options(cib_client, call_type, call_options, host, op,
	&local_notify, &needs_reply, &process, &needs_forward);

	} else if (parse_peer_options(call_type, request, &local_notify,
	&needs_reply, &process, &needs_forward) == FALSE) {
	return;
	}
	crm_trace("Finished determining processing actions");

	if (call_options & cib_discard_reply) {
	needs_reply = is_update;
	local_notify = FALSE;
	}

	if (needs_forward) {
	forward_request(request, cib_client, call_options);
	return;
	}

	if (cib_status != cib_ok) {
	rc = cib_status;
	crm_err("Operation ignored, cluster configuration is invalid."
	" Please repair and restart: %s", cib_error2string(cib_status));
	op_reply = cib_construct_reply(request, the_cib, cib_status);

	} else if (process) {
	int level = LOG_INFO;
	const char *section = crm_element_value(request, F_CIB_SECTION);

	cib_num_local++;
	rc = cib_process_command(request, &op_reply, &result_diff, privileged);

	if (global_update) {
	switch (rc) {
	case cib_ok:
	case cib_old_data:
	case cib_diff_resync:
	case cib_diff_failed:
	level = LOG_DEBUG_2;
	break;
	default:
	level = LOG_ERR;
	}

	} else if (safe_str_eq(op, CIB_OP_QUERY)) {
	level = LOG_DEBUG_2;

	} else if (rc != cib_ok) {
	cib_num_fail++;
	level = LOG_WARNING;

	} else if (safe_str_eq(op, CIB_OP_SLAVE)) {
	level = LOG_DEBUG_2;

	} else if (safe_str_eq(section, XML_CIB_TAG_STATUS)) {
	level = LOG_DEBUG_2;
	}

	if (get_crm_log_level() >= level) {
	/* Avoid all the xml lookups if we're not going to print the results */
	do_crm_log(level,
	"Operation complete: op %s for section %s (origin=%s/%s/%s, version=%s.%s.%s): %s (rc=%d)",
	op, section ? section : "'all'", originator ? originator : "local",
	crm_element_value(request, F_CIB_CLIENTNAME), crm_element_value(request,
	F_CIB_CALLID),
	the_cib ? crm_element_value(the_cib, XML_ATTR_GENERATION_ADMIN) : "0",
	the_cib ? crm_element_value(the_cib, XML_ATTR_GENERATION) : "0",
	the_cib ? crm_element_value(the_cib, XML_ATTR_NUMUPDATES) : "0",
	cib_error2string(rc), rc);
	}

	if (op_reply == NULL && (needs_reply \|\| local_notify)) {
	crm_err("Unexpected NULL reply to message");
	crm_log_xml_err(request, "null reply");
	needs_reply = FALSE;
	local_notify = FALSE;
	}
	}
	crm_trace("processing response cases %.16x %.16x", call_options, cib_sync_call);

	if (local_notify) {
	const char *client_id = crm_element_value(request, F_CIB_CLIENTID);

	if (client_id && process == FALSE) {
	do_local_notify(request, client_id, call_options & cib_sync_call, from_peer);
	} else if (client_id) {
	do_local_notify(op_reply, client_id, call_options & cib_sync_call, from_peer);
	}
	}

	/* from now on we are the server */
	if (needs_reply == FALSE \|\| stand_alone) {
	/* nothing more to do...
	* this was a non-originating slave update
	*/
	crm_trace("Completed slave update");

	} else if (rc == cib_ok && result_diff != NULL && !(call_options & cib_inhibit_bcast)) {
	send_peer_reply(request, result_diff, originator, TRUE);

	} else if (call_options & cib_discard_reply) {
	crm_trace("Caller isn't interested in reply");

	} else if (from_peer) {
	if (is_update == FALSE \|\| result_diff == NULL) {
	crm_trace("Request not broadcast: R/O call");

	} else if (call_options & cib_inhibit_bcast) {
	crm_trace("Request not broadcast: inhibited");

	} else if (rc != cib_ok) {
	crm_trace("Request not broadcast: call failed: %s", cib_error2string(rc));
	} else {
	crm_trace("Directing reply to %s", originator);
	}

	send_peer_reply(op_reply, result_diff, originator, FALSE);
	}

	free_xml(op_reply);
	free_xml(result_diff);

	return;
	}

	xmlNode *
	cib_construct_reply(xmlNode * request, xmlNode * output, int rc)
	{
	int lpc = 0;
	xmlNode *reply = NULL;
	const char *name = NULL;
	const char *value = NULL;

	const char *names[] = {
	F_CIB_OPERATION,
	F_CIB_CALLID,
	F_CIB_CLIENTID,
	F_CIB_CALLOPTS
	};
	static int max = DIMOF(names);

	crm_trace("Creating a basic reply");
	reply = create_xml_node(NULL, "cib-reply");
	crm_xml_add(reply, F_TYPE, T_CIB);

	for (lpc = 0; lpc < max; lpc++) {
	name = names[lpc];
	value = crm_element_value(request, name);
	crm_xml_add(reply, name, value);
	}

	crm_xml_add_int(reply, F_CIB_RC, rc);

	if (output != NULL) {
	crm_trace("Attaching reply output");
	add_message_xml(reply, F_CIB_CALLDATA, output);
	}
	return reply;
	}

	enum cib_errors
	cib_process_command(xmlNode * request, xmlNode reply, xmlNode cib_diff, gboolean privileged)
	{
	xmlNode *input = NULL;
	xmlNode *output = NULL;
	xmlNode *result_cib = NULL;
	xmlNode *current_cib = NULL;

	#if ENABLE_ACL
	xmlNode *filtered_current_cib = NULL;
	#endif

	int call_type = 0;
	int call_options = 0;
	int log_level = LOG_DEBUG_4;

	const char *op = NULL;
	const char *section = NULL;

	enum cib_errors rc = cib_ok;
	enum cib_errors rc2 = cib_ok;

	gboolean send_r_notify = FALSE;
	gboolean global_update = FALSE;
	gboolean config_changed = FALSE;
	gboolean manage_counters = TRUE;

	CRM_ASSERT(cib_status == cib_ok);

	*reply = NULL;
	*cib_diff = NULL;
	current_cib = the_cib;

	/* Start processing the request... */
	op = crm_element_value(request, F_CIB_OPERATION);
	crm_element_value_int(request, F_CIB_CALLOPTS, &call_options);
	rc = cib_get_operation_id(op, &call_type);

	if (rc == cib_ok && privileged == FALSE) {
	rc = cib_op_can_run(call_type, call_options, privileged, global_update);
	}

	rc2 = cib_op_prepare(call_type, request, &input, &section);
	if (rc == cib_ok) {
	rc = rc2;
	}

	if (rc != cib_ok) {
	crm_trace("Call setup failed: %s", cib_error2string(rc));
	goto done;

	} else if (cib_op_modifies(call_type) == FALSE) {
	#if ENABLE_ACL
	if (acl_enabled(config_hash) == FALSE
	\|\| acl_filter_cib(request, current_cib, current_cib, &filtered_current_cib) == FALSE) {
	rc = cib_perform_op(op, call_options, cib_op_func(call_type), TRUE,
	section, request, input, FALSE, &config_changed,
	current_cib, &result_cib, NULL, &output);

	} else if (filtered_current_cib == NULL) {
	crm_debug("Pre-filtered the entire cib");
	rc = cib_permission_denied;

	} else {
	crm_debug("Pre-filtered the queried cib according to the ACLs");
	rc = cib_perform_op(op, call_options, cib_op_func(call_type), TRUE,
	section, request, input, FALSE, &config_changed,
	filtered_current_cib, &result_cib, NULL, &output);
	}
	#else
	rc = cib_perform_op(op, call_options, cib_op_func(call_type), TRUE,
	section, request, input, FALSE, &config_changed,
	current_cib, &result_cib, NULL, &output);

	#endif

	CRM_CHECK(result_cib == NULL, free_xml(result_cib));
	goto done;
	}

	/* Handle a valid write action */
	global_update = crm_is_true(crm_element_value(request, F_CIB_GLOBAL_UPDATE));
	if (global_update) {
	manage_counters = FALSE;
	call_options \|= cib_force_diff;

	CRM_CHECK(call_type == 3 \|\| call_type == 4, crm_err("Call type: %d", call_type);
	crm_log_xml_err(request, "bad op"));
	}
	#ifdef SUPPORT_PRENOTIFY
	if ((call_options & cib_inhibit_notify) == 0) {
	cib_pre_notify(call_options, op, the_cib, input);
	}
	#endif

	if (rc == cib_ok) {
	if (call_options & cib_inhibit_bcast) {
	/* skip */
	crm_trace("Skipping update: inhibit broadcast");
	manage_counters = FALSE;
	}

	rc = cib_perform_op(op, call_options, cib_op_func(call_type), FALSE,
	section, request, input, manage_counters, &config_changed,
	current_cib, &result_cib, cib_diff, &output);

	#if ENABLE_ACL
	if (acl_enabled(config_hash) == TRUE
	&& acl_check_diff(request, current_cib, result_cib, *cib_diff) == FALSE) {
	rc = cib_permission_denied;
	}
	#endif

	if (rc == cib_ok && config_changed) {
	time_t now;
	char *now_str = NULL;
	const char *validation = crm_element_value(result_cib, XML_ATTR_VALIDATION);

	if (validation) {
	int current_version = get_schema_version(validation);
	int support_version = get_schema_version("pacemaker-1.1");

	/* Once the later schemas support the "update-" attributes, change "==" to ">=" -- Changed /
	if (current_version >= support_version) {
	const char *origin = crm_element_value(request, F_ORIG);

	crm_xml_replace(result_cib, XML_ATTR_UPDATE_ORIG,
	origin ? origin : cib_our_uname);
	crm_xml_replace(result_cib, XML_ATTR_UPDATE_CLIENT,
	crm_element_value(request, F_CIB_CLIENTNAME));
	#if ENABLE_ACL
	crm_xml_replace(result_cib, XML_ATTR_UPDATE_USER,
	crm_element_value(request, F_CIB_USER));
	#endif
	}
	}

	now = time(NULL);
	now_str = ctime(&now);
	now_str[24] = EOS; /* replace the newline */
	crm_xml_replace(result_cib, XML_CIB_ATTR_WRITTEN, now_str);
	}

	if (manage_counters == FALSE) {
	config_changed = cib_config_changed(current_cib, result_cib, cib_diff);
	}

	/* Always write to disk for replace ops,
	* this negates the need to detect ordering changes
	*/
	if (config_changed == FALSE && crm_str_eq(CIB_OP_REPLACE, op, TRUE)) {
	config_changed = TRUE;
	}
	}

	if (rc == cib_ok && (call_options & cib_dryrun) == 0) {
	rc = activateCibXml(result_cib, config_changed, op);
	if (rc == cib_ok && cib_internal_config_changed(*cib_diff)) {
	cib_read_config(config_hash, result_cib);
	}

	if (crm_str_eq(CIB_OP_REPLACE, op, TRUE)) {
	if (section == NULL) {
	send_r_notify = TRUE;

	} else if (safe_str_eq(section, XML_TAG_CIB)) {
	send_r_notify = TRUE;

	} else if (safe_str_eq(section, XML_CIB_TAG_NODES)) {
	send_r_notify = TRUE;

	} else if (safe_str_eq(section, XML_CIB_TAG_STATUS)) {
	send_r_notify = TRUE;
	}

	} else if (crm_str_eq(CIB_OP_ERASE, op, TRUE)) {
	send_r_notify = TRUE;
	}

	} else if (rc == cib_dtd_validation) {
	if (output != NULL) {
	crm_log_xml_info(output, "cib:output");
	free_xml(output);
	}
	#if ENABLE_ACL
	{
	xmlNode *filtered_result_cib = NULL;

	if (acl_enabled(config_hash) == FALSE
	\|\| acl_filter_cib(request, current_cib, result_cib,
	&filtered_result_cib) == FALSE) {
	output = result_cib;

	} else {
	crm_debug("Filtered the result cib for output according to the ACLs");
	output = filtered_result_cib;
	if (result_cib != NULL) {
	free_xml(result_cib);
	}
	}
	}
	#else
	output = result_cib;
	#endif

	} else {
	free_xml(result_cib);
	}

	if ((call_options & cib_inhibit_notify) == 0) {
	const char *call_id = crm_element_value(request, F_CIB_CALLID);
	const char *client = crm_element_value(request, F_CIB_CLIENTNAME);

	#ifdef SUPPORT_POSTNOTIFY
	cib_post_notify(call_options, op, input, rc, the_cib);
	#endif
	cib_diff_notify(call_options, client, call_id, op, input, rc, *cib_diff);
	}

	if (send_r_notify) {
	const char *origin = crm_element_value(request, F_ORIG);

	cib_replace_notify(origin, the_cib, rc, *cib_diff);
	}

	if (rc != cib_ok) {
	log_level = LOG_DEBUG_4;
	if (rc == cib_dtd_validation && global_update) {
	log_level = LOG_WARNING;
	crm_log_xml_info(input, "cib:global_update");
	}

	} else if (config_changed) {
	log_level = LOG_DEBUG_3;
	if (cib_is_master) {
	log_level = LOG_INFO;
	}

	} else if (cib_is_master) {
	log_level = LOG_DEBUG_2;
	}

	log_xml_diff(log_level, *cib_diff, "cib:diff");

	done:
	if ((call_options & cib_discard_reply) == 0) {
	*reply = cib_construct_reply(request, output, rc);
	crm_log_xml_trace(*reply, "cib:reply");
	}
	#if ENABLE_ACL
	if (filtered_current_cib != NULL) {
	free_xml(filtered_current_cib);
	}
	#endif

	if (call_type >= 0) {
	cib_op_cleanup(call_type, call_options, &input, &output);
	}
	return rc;
	}

	gint
	cib_GCompareFunc(gconstpointer a, gconstpointer b)
	{
	const xmlNode *a_msg = a;
	const xmlNode *b_msg = b;

	int msg_a_id = 0;
	int msg_b_id = 0;
	const char *value = NULL;

	value = crm_element_value_const(a_msg, F_CIB_CALLID);
	msg_a_id = crm_parse_int(value, NULL);

	value = crm_element_value_const(b_msg, F_CIB_CALLID);
	msg_b_id = crm_parse_int(value, NULL);

	if (msg_a_id == msg_b_id) {
	return 0;
	} else if (msg_a_id < msg_b_id) {
	return -1;
	}
	return 1;
	}

	#if SUPPORT_HEARTBEAT
	void
	cib_ha_peer_callback(HA_Message * msg, void *private_data)
	{
	xmlNode *xml = convert_ha_message(NULL, msg, __FUNCTION__);

	cib_peer_callback(xml, private_data);
	free_xml(xml);
	}
	#endif

	void
	cib_peer_callback(xmlNode * msg, void *private_data)
	{
	const char *reason = NULL;
	const char *originator = crm_element_value(msg, F_ORIG);

	if (originator == NULL \|\| crm_str_eq(originator, cib_our_uname, TRUE)) {
	/* message is from ourselves */
	return;

	} else if (crm_peer_cache == NULL) {
	reason = "membership not established";
	goto bail;
	}

	if (crm_element_value(msg, F_CIB_CLIENTNAME) == NULL) {
	crm_xml_add(msg, F_CIB_CLIENTNAME, originator);
	}

	/* crm_log_xml_trace("Peer[inbound]", msg); */
	cib_process_request(msg, FALSE, TRUE, TRUE, NULL);
	return;

	bail:
	if (reason) {
	const char *seq = crm_element_value(msg, F_SEQ);
	const char *op = crm_element_value(msg, F_CIB_OPERATION);

	crm_warn("Discarding %s message (%s) from %s: %s", op, seq, originator, reason);
	}
	}

	void
	cib_client_status_callback(const char node, const char client, const char status, void private)
	{
	crm_node_t *peer = NULL;

	if (safe_str_eq(client, CRM_SYSTEM_CIB)) {
	crm_info("Status update: Client %s/%s now has status [%s]", node, client, status);

	if (safe_str_eq(status, JOINSTATUS)) {
	status = ONLINESTATUS;

	} else if (safe_str_eq(status, LEAVESTATUS)) {
	status = OFFLINESTATUS;
	}

	peer = crm_get_peer(0, node);
	crm_update_peer_proc(__FUNCTION__, peer, crm_proc_cib, status);
	}
	return;
	}

	#if SUPPORT_HEARTBEAT
	extern oc_ev_t *cib_ev_token;
	static void *ccm_library = NULL;
	int (ccm_api_callback_done) (void cookie) = NULL;
	int (ccm_api_handle_event) (const oc_ev_t token) = NULL;

	int
	cib_ccm_dispatch(gpointer user_data)
	{
	int rc = 0;
	oc_ev_t ccm_token = (oc_ev_t ) user_data;

	crm_trace("received callback");

	if (ccm_api_handle_event == NULL) {
	ccm_api_handle_event =
	find_library_function(&ccm_library, CCM_LIBRARY, "oc_ev_handle_event");
	}

	rc = (*ccm_api_handle_event) (ccm_token);
	if (0 == rc) {
	return 0;
	}

	crm_err("CCM connection appears to have failed: rc=%d.", rc);

	/* eventually it might be nice to recover and reconnect... but until then... */
	crm_err("Exiting to recover from CCM connection failure");
	exit(2);

	return -1;
	}

	int current_instance = 0;
	void
	cib_ccm_msg_callback(oc_ed_t event, void cookie, size_t size, const void data)
	{
	gboolean update_id = FALSE;
	const oc_ev_membership_t *membership = data;

	CRM_ASSERT(membership != NULL);

	crm_info("Processing CCM event=%s (id=%d)", ccm_event_name(event), membership->m_instance);

	if (current_instance > membership->m_instance) {
	crm_err("Membership instance ID went backwards! %d->%d",
	current_instance, membership->m_instance);
	CRM_ASSERT(current_instance <= membership->m_instance);
	}

	switch (event) {
	case OC_EV_MS_NEW_MEMBERSHIP:
	case OC_EV_MS_INVALID:
	update_id = TRUE;
	break;
	case OC_EV_MS_PRIMARY_RESTORED:
	update_id = TRUE;
	break;
	case OC_EV_MS_NOT_PRIMARY:
	crm_trace("Ignoring transitional CCM event: %s", ccm_event_name(event));
	break;
	case OC_EV_MS_EVICTED:
	crm_err("Evicted from CCM: %s", ccm_event_name(event));
	break;
	default:
	crm_err("Unknown CCM event: %d", event);
	}

	if (update_id) {
	unsigned int lpc = 0;

	CRM_CHECK(membership != NULL, return);

	current_instance = membership->m_instance;

	for (lpc = 0; lpc < membership->m_n_out; lpc++) {
	crm_update_ccm_node(membership, lpc + membership->m_out_idx, CRM_NODE_LOST,
	current_instance);
	}

	for (lpc = 0; lpc < membership->m_n_member; lpc++) {
	crm_update_ccm_node(membership, lpc + membership->m_memb_idx, CRM_NODE_ACTIVE,
	current_instance);
	}
	}

	if (ccm_api_callback_done == NULL) {
	ccm_api_callback_done =
	find_library_function(&ccm_library, CCM_LIBRARY, "oc_ev_callback_done");
	}
	(*ccm_api_callback_done) (cookie);
	return;
	}
	#endif

	gboolean
	can_write(int flags)
	{
	return TRUE;
	}

	static gboolean
	cib_force_exit(gpointer data)
	{
	crm_notice("Forcing exit!");
	terminate_cib(__FUNCTION__, TRUE);
	return FALSE;
	}

	static void
	disconnect_remote_client(gpointer key, gpointer value, gpointer user_data)
	{
	cib_client_t *a_client = value;
	crm_err("Disconnecting %s... Not implemented", crm_str(a_client->name));
	}

	void
	cib_shutdown(int nsig)
	{
	struct qb_ipcs_stats srv_stats;
	if (cib_shutdown_flag == FALSE) {
	int disconnects = 0;
	qb_ipcs_connection_t *c = NULL;

	cib_shutdown_flag = TRUE;

	for(c = qb_ipcs_connection_first_get(ipcs_rw); c != NULL; c = qb_ipcs_connection_next_get(ipcs_rw, c)) {
	crm_debug("Disconnecting r/w client %p...", c);
	qb_ipcs_disconnect(c);
	qb_ipcs_connection_unref(c);
	disconnects++;
	}

	for(c = qb_ipcs_connection_first_get(ipcs_ro); c != NULL; c = qb_ipcs_connection_next_get(ipcs_ro, c)) {
	crm_debug("Disconnecting r/o client %p...", c);
	qb_ipcs_disconnect(c);
	qb_ipcs_connection_unref(c);
	disconnects++;
	}

	for(c = qb_ipcs_connection_first_get(ipcs_shm); c != NULL; c = qb_ipcs_connection_next_get(ipcs_shm, c)) {
	crm_debug("Disconnecting non-blocking r/w client %p...", c);
	qb_ipcs_disconnect(c);
	qb_ipcs_connection_unref(c);
	disconnects++;
	}

	disconnects += g_hash_table_size(client_list);

	crm_debug("Disconnecting %d remote clients", g_hash_table_size(client_list));
	g_hash_table_foreach(client_list, disconnect_remote_client, NULL);
	crm_info("Disconnected %d clients", disconnects);
	}

	qb_ipcs_stats_get(ipcs_rw, &srv_stats, QB_FALSE);

	if(g_hash_table_size(client_list) == 0) {
	crm_info("All clients disconnected (%d)", srv_stats.active_connections);
	initiate_exit();

	} else {
	crm_info("Waiting on %d clients to disconnect (%d)", g_hash_table_size(client_list), srv_stats.active_connections);
	}
	}

	void
	initiate_exit(void)
	{
	int active = 0;
	xmlNode *leaving = NULL;

	active = crm_active_peers();
	if (active < 2) {
	terminate_cib(__FUNCTION__, FALSE);
	return;
	}

	crm_info("Sending disconnect notification to %d peers...", active);

	leaving = create_xml_node(NULL, "exit-notification");
	crm_xml_add(leaving, F_TYPE, "cib");
	crm_xml_add(leaving, F_CIB_OPERATION, "cib_shutdown_req");

	send_cluster_message(NULL, crm_msg_cib, leaving, TRUE);
	free_xml(leaving);

	g_timeout_add(crm_get_msec("5s"), cib_force_exit, NULL);
	}

	extern int remote_fd;
	extern int remote_tls_fd;
	extern void terminate_ais_connection(void);

	void
	terminate_cib(const char *caller, gboolean fast)
	{
	if (remote_fd > 0) {
	close(remote_fd);
	}
	if (remote_tls_fd > 0) {
	close(remote_tls_fd);
	}

	if(!fast) {
	if(is_heartbeat_cluster()) {
	#if SUPPORT_HEARTBEAT
	if (hb_conn != NULL) {
	crm_info("%s: Disconnecting heartbeat", caller);
	hb_conn->llc_ops->signoff(hb_conn, FALSE);

	} else {
	crm_err("%s: No heartbeat connection", caller);
	}
	#endif
	} else {
	#if SUPPORT_COROSYNC
	crm_info("%s: Disconnecting corosync", caller);
	terminate_ais_connection();
	#endif
	}
	}

	uninitializeCib();

	crm_info("%s: Exiting%s...", caller, fast?" fast":"");
	qb_log_fini();

	if (fast) {
	exit(LSB_EXIT_GENERIC);

	} else if(mainloop != NULL && g_main_is_running(mainloop)) {
	g_main_quit(mainloop);

	} else {
	exit(LSB_EXIT_OK);
	}
	}
	diff --git a/lib/common/ipc.c b/lib/common/ipc.c
	index cc0eee125f..607a88b7a2 100644
	--- a/lib/common/ipc.c
	+++ b/lib/common/ipc.c
	@@ -1,486 +1,486 @@
	/*
	* Copyright (C) 2004 Andrew Beekhof <andrew@beekhof.net>
	*
	* This library is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Lesser General Public
	* License as published by the Free Software Foundation; either
	* version 2.1 of the License, or (at your option) any later version.
	*
	* This library is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* Lesser General Public License for more details.
	*
	* You should have received a copy of the GNU Lesser General Public
	* License along with this library; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	*/

	#include <crm_internal.h>

	#include <sys/param.h>

	#include <stdio.h>
	#include <sys/types.h>
	#include <sys/stat.h>
	#include <unistd.h>

	#include <errno.h>
	#include <fcntl.h>

	#include <crm/crm.h>
	#include <crm/msg_xml.h>
	#include <crm/common/ipc.h>
	#include <crm/cluster.h>

	xmlNode *
	create_request_adv(const char task, xmlNode msg_data,
	const char host_to, const char sys_to,
	const char sys_from, const char uuid_from, const char *origin)
	{
	char *true_from = NULL;
	xmlNode *request = NULL;
	char *reference = generateReference(task, sys_from);

	if (uuid_from != NULL) {
	true_from = generate_hash_key(sys_from, uuid_from);
	} else if (sys_from != NULL) {
	true_from = crm_strdup(sys_from);
	} else {
	crm_err("No sys from specified");
	}

	/* host_from will get set for us if necessary by CRMd when routed */
	request = create_xml_node(NULL, __FUNCTION__);
	crm_xml_add(request, F_CRM_ORIGIN, origin);
	crm_xml_add(request, F_TYPE, T_CRM);
	crm_xml_add(request, F_CRM_VERSION, CRM_FEATURE_SET);
	crm_xml_add(request, F_CRM_MSG_TYPE, XML_ATTR_REQUEST);
	crm_xml_add(request, XML_ATTR_REFERENCE, reference);
	crm_xml_add(request, F_CRM_TASK, task);
	crm_xml_add(request, F_CRM_SYS_TO, sys_to);
	crm_xml_add(request, F_CRM_SYS_FROM, true_from);

	/* HOSTTO will be ignored if it is to the DC anyway. */
	if (host_to != NULL && strlen(host_to) > 0) {
	crm_xml_add(request, F_CRM_HOST_TO, host_to);
	}

	if (msg_data != NULL) {
	add_message_xml(request, F_CRM_DATA, msg_data);
	}
	free(reference);
	free(true_from);

	return request;
	}

	/*
	* This method adds a copy of xml_response_data
	*/
	xmlNode *
	create_reply_adv(xmlNode * original_request, xmlNode * xml_response_data, const char *origin)
	{
	xmlNode *reply = NULL;

	const char *host_from = crm_element_value(original_request, F_CRM_HOST_FROM);
	const char *sys_from = crm_element_value(original_request, F_CRM_SYS_FROM);
	const char *sys_to = crm_element_value(original_request, F_CRM_SYS_TO);
	const char *type = crm_element_value(original_request, F_CRM_MSG_TYPE);
	const char *operation = crm_element_value(original_request, F_CRM_TASK);
	const char *crm_msg_reference = crm_element_value(original_request, XML_ATTR_REFERENCE);

	if (type == NULL) {
	crm_err("Cannot create new_message," " no message type in original message");
	CRM_ASSERT(type != NULL);
	return NULL;
	#if 0
	} else if (strcasecmp(XML_ATTR_REQUEST, type) != 0) {
	crm_err("Cannot create new_message," " original message was not a request");
	return NULL;
	#endif
	}
	reply = create_xml_node(NULL, __FUNCTION__);
	crm_xml_add(reply, F_CRM_ORIGIN, origin);
	crm_xml_add(reply, F_TYPE, T_CRM);
	crm_xml_add(reply, F_CRM_VERSION, CRM_FEATURE_SET);
	crm_xml_add(reply, F_CRM_MSG_TYPE, XML_ATTR_RESPONSE);
	crm_xml_add(reply, XML_ATTR_REFERENCE, crm_msg_reference);
	crm_xml_add(reply, F_CRM_TASK, operation);

	/* since this is a reply, we reverse the from and to */
	crm_xml_add(reply, F_CRM_SYS_TO, sys_from);
	crm_xml_add(reply, F_CRM_SYS_FROM, sys_to);

	/* HOSTTO will be ignored if it is to the DC anyway. */
	if (host_from != NULL && strlen(host_from) > 0) {
	crm_xml_add(reply, F_CRM_HOST_TO, host_from);
	}

	if (xml_response_data != NULL) {
	add_message_xml(reply, F_CRM_DATA, xml_response_data);
	}

	return reply;
	}


	/* Libqb based IPC */

	/* Server... */

	int
	crm_ipcs_client_pid(qb_ipcs_connection_t *c)
	{
	struct qb_ipcs_connection_stats stats;
	stats.client_pid = 0;
	qb_ipcs_connection_stats_get(c, &stats, 0);
	return stats.client_pid;
	}

	xmlNode *
	crm_ipcs_recv(qb_ipcs_connection_t c, void data, size_t size)
	{
	char text = ((char)data) + sizeof(struct qb_ipc_request_header);
	- crm_trace("Received %.120s", text);
	+ crm_trace("Received %.200s", text);
	return string2xml(text);
	}

	ssize_t
	crm_ipcs_send(qb_ipcs_connection_t c, xmlNode message, enum ipcs_send_flags flags)
	{
	int rc;
	int lpc = 0;
	struct iovec iov[2];
	static uint32_t id = 0;
	const char *type = "Response";
	struct qb_ipc_response_header header;
	char *buffer = dump_xml_unformatted(message);

	iov[0].iov_len = sizeof(struct qb_ipc_response_header);
	iov[0].iov_base = &header;
	iov[1].iov_len = 1 + strlen(buffer);
	iov[1].iov_base = buffer;

	header.id = id++; /* We don't really use it, but doesn't hurt to set one */
	header.error = 0; /* unused */
	header.size = iov[0].iov_len + iov[1].iov_len;

	do {
	if(flags & ipcs_send_event) {
	rc = qb_ipcs_event_sendv(c, iov, 2);
	type = "Event";

	} else {
	rc = qb_ipcs_response_sendv(c, iov, 2);
	}

	if(rc != -EAGAIN) {
	break;
	} else if(lpc > 3 && (flags & ipcs_send_error)) {
	break;
	}

	crm_debug("Attempting resend %d of %s %d (%d bytes) to %p[%d]: %.120s",
	++lpc, type, header.id, header.size, c, crm_ipcs_client_pid(c), buffer);
	sleep(1);

	/* Only retry for important stuff, and even then only a limited amount for ipcs_send_error
	* Unless ipcs_send_info or ipcs_send_error is specified, we block by default
	*/
	} while((flags & ipcs_send_info) == 0);

	if(rc < header.size) {
	do_crm_log((flags & ipcs_send_error)?LOG_ERR:LOG_INFO,
	"%s %d failed, size=%d, to=%p[%d], rc=%d: %.120s",
	type, header.id, header.size, crm_ipcs_client_pid(c), rc, buffer);
	} else {
	crm_trace("%s %d sent, %d bytes to %p: %.120s", type, header.id, rc, c, buffer);
	}
	free(buffer);
	return rc;
	}

	void
	crm_ipcs_send_ack(
	qb_ipcs_connection_t c, const char tag, const char *function, int line)
	{
	xmlNode *ack = create_xml_node(NULL, tag);
	crm_xml_add(ack, "function", function);
	crm_xml_add_int(ack, "line", line);
	crm_ipcs_send(c, ack, FALSE);
	free_xml(ack);
	}

	/* Client... */

	#define MIN_MSG_SIZE 12336 /* sizeof(struct qb_ipc_connection_response) */
	#define MAX_MSG_SIZE 20*1024

	struct crm_ipc_s
	{
	struct pollfd pfd;

	int buf_size;
	int msg_size;
	char *buffer;
	char *name;

	qb_ipcc_connection_t *ipc;

	};

	static int
	pick_ipc_buffer(int max)
	{
	const char *env = getenv("PCMK_ipc_buffer");

	if(env) {
	max = crm_parse_int(env, "0");
	}

	if(max <= 0) {
	max = MAX_MSG_SIZE;
	}

	if(max < MIN_MSG_SIZE) {
	max = MIN_MSG_SIZE;
	}

	crm_trace("Using max message size of %d", max);
	return max;
	}


	crm_ipc_t *
	crm_ipc_new(const char *name, size_t max_size)
	{
	crm_ipc_t *client = NULL;
	client = calloc(1, sizeof(crm_ipc_t));

	client->name = crm_strdup(name);
	client->buf_size = pick_ipc_buffer(max_size);
	client->buffer = malloc(client->buf_size);

	client->pfd.fd = -1;
	client->pfd.events = POLLIN;
	client->pfd.revents = 0;

	return client;
	}

	bool
	crm_ipc_connect(crm_ipc_t *client)
	{
	client->ipc = qb_ipcc_connect(client->name, client->buf_size);

	if (client->ipc == NULL) {
	crm_perror(LOG_INFO, "Could not establish %s connection", client->name);
	return FALSE;
	}

	client->pfd.fd = crm_ipc_get_fd(client);
	if(client->pfd.fd < 0) {
	crm_perror(LOG_INFO, "Could not obtain file descriptor for %s connection", client->name);
	return FALSE;
	}

	qb_ipcc_context_set(client->ipc, client);

	return TRUE;
	}

	void
	crm_ipc_close(crm_ipc_t *client)
	{
	crm_trace("Disconnecting %s IPC connection %p (%p.%d)", client->name, client, client->ipc);
	if(client && client->ipc) {
	qb_ipcc_connection_t *ipc = client->ipc;
	client->ipc = NULL;
	qb_ipcc_disconnect(ipc);
	}
	}

	void
	crm_ipc_destroy(crm_ipc_t *client)
	{
	if(client) {
	if(client->ipc && qb_ipcc_is_connected(client->ipc)) {
	crm_notice("Destroying an active IPC connection to %s", client->name);
	/* The next line is basically unsafe
	*
	* If this connection was attached to mainloop and mainloop is active,
	* the 'disconnected' callback will end up back here and we'll end
	* up free'ing the memory twice - something that can still happen
	* even without this if we destroy a connection and it closes before
	* we call exit
	*/
	/* crm_ipc_close(client); */
	}
	crm_trace("Destroying %s IPC connection %p", client->name, client);
	free(client->buffer);
	free(client->name);
	free(client);
	}
	}

	int
	crm_ipc_get_fd(crm_ipc_t *client)
	{
	int fd = 0;

	CRM_ASSERT(client != NULL);
	if(qb_ipcc_fd_get(client->ipc, &fd) < 0) {
	crm_perror(LOG_ERR, "Could not obtain file IPC descriptor for %s", client->name);
	}
	return fd;
	}

	bool
	crm_ipc_connected(crm_ipc_t *client)
	{
	bool rc = FALSE;

	if(client == NULL) {
	crm_trace("No client");
	return FALSE;

	} else if(client->pfd.fd < 0) {
	crm_trace("Bad descriptor");
	return FALSE;
	}

	rc = qb_ipcc_is_connected(client->ipc);
	if(rc == FALSE) {
	client->pfd.fd = -1;
	}
	return rc;
	}

	int
	crm_ipc_ready(crm_ipc_t *client)
	{
	CRM_ASSERT(client != NULL);

	if(crm_ipc_connected(client) == FALSE) {
	return -ENOTCONN;
	}

	client->pfd.revents = 0;
	return poll(&(client->pfd), 1, 0);
	}

	long
	crm_ipc_read(crm_ipc_t *client)
	{
	CRM_ASSERT(client != NULL);
	CRM_ASSERT(client->buffer != NULL);

	crm_trace("Message recieved on %s IPC connection", client->name);

	client->buffer[0] = 0;
	client->msg_size = qb_ipcc_event_recv(client->ipc, client->buffer, client->buf_size-1, -1);
	if(client->msg_size >= 0) {
	struct qb_ipc_response_header header = (struct qb_ipc_response_header )client->buffer;
	client->buffer[client->msg_size] = 0;

	crm_trace("Recieved response %d, size=%d, rc=%d, text: %.200s", header->id, header->size, client->msg_size, client->buffer+sizeof(struct qb_ipc_response_header));
	}

	if(crm_ipc_connected(client) == FALSE \|\| client->msg_size == -ENOTCONN) {
	crm_err("Connection to %s failed", client->name);
	}

	return client->msg_size;
	}

	const char *
	crm_ipc_buffer(crm_ipc_t *client)
	{
	CRM_ASSERT(client != NULL);
	return client->buffer + sizeof(struct qb_ipc_response_header);
	}

	const char crm_ipc_name(crm_ipc_t client)
	{
	CRM_ASSERT(client != NULL);
	return client->name;
	}

	int
	crm_ipc_send(crm_ipc_t client, xmlNode message, xmlNode **reply, int32_t ms_timeout)
	{
	long rc = 0;
	struct iovec iov[2];
	static uint32_t id = 0;
	struct qb_ipc_request_header header;
	char *buffer = dump_xml_unformatted(message);

	iov[0].iov_len = sizeof(struct qb_ipc_request_header);
	iov[0].iov_base = &header;
	iov[1].iov_len = 1 + strlen(buffer);
	iov[1].iov_base = buffer;

	header.id = id++; /* We don't really use it, but doesn't hurt to set one */
	header.size = iov[0].iov_len + iov[1].iov_len;

	if(ms_timeout == 0) {
	ms_timeout = 5000;
	}

	crm_trace("Waiting for reply to %u bytes: %.200s...", header.size, buffer);
	rc = qb_ipcc_sendv_recv(client->ipc, iov, 2, client->buffer, client->buf_size, ms_timeout);

	if(rc > 0) {
	struct qb_ipc_response_header hdr = (struct qb_ipc_response_header )client->buffer;
	crm_trace("Recieved response %d, size=%d, rc=%d, text: %.200s", hdr->id, hdr->size, rc, crm_ipc_buffer(client));

	if(reply) {
	*reply = string2xml(crm_ipc_buffer(client));
	}

	} else {
	crm_trace("Response not recieved: rc=%d, errno=%d", rc, errno);
	}

	if(crm_ipc_connected(client) == FALSE) {
	crm_notice("Connection to %s closed: %d", client->name, rc);

	} else if(rc <= 0) {
	crm_perror(LOG_ERR, "Request to %s failed: %ld", client->name, rc);
	crm_info("Request was %.120s", buffer);
	}

	free(buffer);
	return rc;
	}

	/* Utils */

	xmlNode *
	create_hello_message(const char *uuid,
	const char client_name, const char major_version, const char *minor_version)
	{
	xmlNode *hello_node = NULL;
	xmlNode *hello = NULL;

	if (uuid == NULL \|\| strlen(uuid) == 0
	\|\| client_name == NULL \|\| strlen(client_name) == 0
	\|\| major_version == NULL \|\| strlen(major_version) == 0
	\|\| minor_version == NULL \|\| strlen(minor_version) == 0) {
	crm_err("Missing fields, Hello message will not be valid.");
	return NULL;
	}

	hello_node = create_xml_node(NULL, XML_TAG_OPTIONS);
	crm_xml_add(hello_node, "major_version", major_version);
	crm_xml_add(hello_node, "minor_version", minor_version);
	crm_xml_add(hello_node, "client_name", client_name);
	crm_xml_add(hello_node, "client_uuid", uuid);

	crm_trace("creating hello message");
	hello = create_request(CRM_OP_HELLO, hello_node, NULL, NULL, client_name, uuid);
	free_xml(hello_node);

	return hello;
	}

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