commands.c
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commands.c
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	/*
	* Copyright (C) 2009 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 2.1 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	*/

	#include <crm_internal.h>

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

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

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

	#include <crm/stonith-ng.h>
	#include <crm/common/xml.h>
	#include <crm/common/msg.h>
	#include <internal.h>

	#define FE_AGENT_FORK -2
	#define FE_AGENT_ERROR -3

	GHashTable *device_list = NULL;
	static int active_children = 0;

	static void exec_child_done(ProcTrack* proc, int status, int signo, int rc, int waslogged);
	static void exec_child_new(ProcTrack* p) { active_children++; }
	static const char exec_child_name(ProcTrack p) {
	async_command_t *cmd = proctrack_data(p);
	return cmd->client?cmd->client:cmd->remote;
	}

	static ProcTrack_ops StonithdProcessTrackOps = {
	exec_child_done,
	exec_child_new,
	exec_child_name,
	};


	static async_command_t create_async_command(xmlNode msg, const char *action)
	{
	async_command_t *cmd = NULL;
	CRM_CHECK(action != NULL, crm_log_xml_warn(msg, "NoAction"); return NULL);

	crm_malloc0(cmd, sizeof(async_command_t));
	crm_element_value_int(msg, F_STONITH_CALLID, &cmd->id);
	crm_element_value_int(msg, F_STONITH_CALLOPTS, &cmd->options);

	cmd->origin = crm_element_value_copy(msg, F_ORIG);
	cmd->remote = crm_element_value_copy(msg, F_STONITH_REMOTE);
	cmd->client = crm_element_value_copy(msg, F_STONITH_CLIENTID);
	cmd->op = crm_element_value_copy(msg, F_STONITH_OPERATION);
	cmd->action = crm_strdup(action);
	cmd->port = crm_element_value_copy(msg, F_STONITH_TARGET);

	CRM_CHECK(cmd->op != NULL, crm_log_xml_warn(msg, "NoOp"); return NULL);
	CRM_CHECK(cmd->client != NULL \|\| cmd->remote != NULL, crm_log_xml_warn(msg, "NoClient"));

	return cmd;
	}

	static void free_async_command(async_command_t *cmd)
	{
	crm_free(cmd->action);
	crm_free(cmd->port);
	crm_free(cmd->remote);
	crm_free(cmd->client);
	crm_free(cmd->origin);
	crm_free(cmd->op);
	crm_free(cmd);
	}

	static void append_arg(
	gpointer key, gpointer value, gpointer user_data)
	{
	int len = 3; /* =, \n, \0 */
	int last = 0;
	char **args = user_data;

	CRM_CHECK(key != NULL, return);
	CRM_CHECK(value != NULL, return);

	len += strlen(key);
	len += strlen(value);
	if(*args != NULL) {
	last = strlen(*args);
	}

	crm_realloc(*args, last+len);

	sprintf((args)+last, "%s=%s\n", (char )key, (char *)value);
	}

	static void append_const_arg(const char key, const char value, char **arg_list)
	{
	char *glib_sucks_key = crm_strdup(key);
	char *glib_sucks_value = crm_strdup(value);

	append_arg(glib_sucks_key, glib_sucks_value, arg_list);

	crm_free(glib_sucks_value);
	crm_free(glib_sucks_key);
	}


	static char make_args(GHashTable args, const char action, const char port)
	{
	char *arg_list = NULL;
	CRM_CHECK(action != NULL, return NULL);

	g_hash_table_foreach(args, append_arg, &arg_list);
	append_const_arg("option", action, &arg_list);
	if(port) {
	append_const_arg("port", port, &arg_list);
	}
	crm_debug_3("Calculated: %s", arg_list);
	return arg_list;
	}

	/* Borrowed from libfence */
	static int run_agent(
	char agent, GHashTable arg_hash, const char action, const char port,
	int agent_result, char output, async_command_t track)
	{
	char *args = make_args(arg_hash, action, port);
	int pid, status, len, rc = -1;
	int pr_fd, pw_fd; /* parent read/write file descriptors */
	int cr_fd, cw_fd; /* child read/write file descriptors */
	int fd1[2];
	int fd2[2];

	cr_fd = cw_fd = pr_fd = pw_fd = -1;

	if (args == NULL \|\| agent == NULL)
	goto fail;
	len = strlen(args);

	if (pipe(fd1))
	goto fail;
	pr_fd = fd1[0];
	cw_fd = fd1[1];

	if (pipe(fd2))
	goto fail;
	cr_fd = fd2[0];
	pw_fd = fd2[1];

	pid = fork();
	if (pid < 0) {
	*agent_result = FE_AGENT_FORK;
	goto fail;
	}

	if (pid) {
	/* parent */
	int ret;

	fcntl(pr_fd, F_SETFL, fcntl(pr_fd, F_GETFL, 0) \| O_NONBLOCK);

	do {
	ret = write(pw_fd, args, len);

	} while (ret < 0 && errno == EINTR);

	if (ret != len) {
	if(rc >= 0) {
	rc = st_err_generic;
	}
	goto fail;
	}

	close(pw_fd);

	if(track) {
	NewTrackedProc(pid, 0, PT_LOGNORMAL, track, &StonithdProcessTrackOps);

	#if 0
	ProcTrackKillInfo *info = NULL;
	crm_malloc0(info, sizeof(ProcTrackKillInfo) * 3);

	killseq[0].mstimeout = timeout; /* after timeout send TERM */
	killseq[0].signalno = SIGTERM;
	killseq[1].mstimeout = 5000; /* after 5 secs remove it */
	killseq[1].signalno = SIGKILL;
	killseq[2].mstimeout = 5000; /* if it's still there after 5, complain */
	killseq[2].signalno = 0;
	SetTrackedProcTimeouts(pid,killseq);
	#endif
	track->stdout = pr_fd;

	crm_free(args);
	close(cw_fd);
	close(cr_fd);
	close(pw_fd);
	return pid;

	} else {
	waitpid(pid, &status, 0);

	if(output != NULL) {
	len = 0;
	do {
	char buf[500];
	ret = read(pr_fd, buf, 500);
	if(ret > 0) {
	buf[ret] = 0;
	crm_realloc(*output, len + ret + 1);
	sprintf((*output)+len, "%s", buf);
	len += ret;
	}

	} while (ret == 500 \|\| (ret < 0 && errno == EINTR));
	}

	*agent_result = FE_AGENT_ERROR;
	if (WIFEXITED(status)) {
	*agent_result = -WEXITSTATUS(status);
	rc = 0;
	}
	}

	} else {
	/* child */

	close(1);
	if (dup(cw_fd) < 0)
	goto fail;
	close(2);
	if (dup(cw_fd) < 0)
	goto fail;
	close(0);
	if (dup(cr_fd) < 0)
	goto fail;
	/* keep cw_fd open so parent can report all errors. */
	close(pr_fd);
	close(cr_fd);
	close(pw_fd);

	execlp(agent, agent, NULL);
	exit(EXIT_FAILURE);
	}

	fail:
	crm_free(args);
	close(pr_fd);
	close(cw_fd);
	close(cr_fd);
	close(pw_fd);
	return rc;
	}

	static void free_device(gpointer data)
	{
	stonith_device_t *device = data;

	g_hash_table_destroy(device->params);
	slist_destroy(char, item, device->targets, crm_free(item));
	crm_free(device->namespace);
	crm_free(device->agent);
	crm_free(device->id);
	crm_free(device);
	}

	static void build_port_aliases(stonith_device_t *device)
	{
	char *name = NULL;
	char *value = NULL;
	int last = 0, lpc = 0, max = 0;

	const char *portmap = g_hash_table_lookup(device->params, "pcmk-portmap");
	if(portmap == NULL) {
	return;
	}

	max = strlen(portmap);
	for(; lpc < max; lpc++) {
	if(portmap[lpc] == 0) {
	break;

	} else if(isalpha(portmap[lpc])) {
	/* keep going */

	} else if(portmap[lpc] == '=') {
	crm_malloc0(name, 1 + lpc - last);
	strncpy(name, portmap + last, lpc - last);
	last = lpc + 1;

	} else if(name && isspace(portmap[lpc])) {
	crm_malloc0(value, 1 + lpc - last);
	strncpy(value, portmap + last, lpc - last);
	last = lpc + 1;

	crm_info("Adding alias '%s'='%s' for %s", name, value, device->id);
	g_hash_table_replace(device->aliases, name, value);
	value=NULL;
	name=NULL;

	} else if(isspace(portmap[lpc])) {
	last = lpc;
	}
	}
	}

	static stonith_device_t build_device_from_xml(xmlNode msg)
	{
	xmlNode *dev = get_xpath_object("//"F_STONITH_DEVICE, msg, LOG_ERR);
	stonith_device_t *device = NULL;

	crm_malloc0(device, sizeof(stonith_device_t));
	device->id = crm_element_value_copy(dev, XML_ATTR_ID);
	device->agent = crm_element_value_copy(dev, "agent");
	device->namespace = crm_element_value_copy(dev, "namespace");
	device->params = xml2list(dev);
	device->aliases = g_hash_table_new_full(g_str_hash, g_str_equal, g_hash_destroy_str, g_hash_destroy_str);
	return device;
	}

	static int stonith_device_register(xmlNode *msg)
	{
	stonith_device_t *device = build_device_from_xml(msg);

	build_port_aliases(device);
	g_hash_table_replace(device_list, device->id, device);

	crm_info("Added '%s' to the device list (%d active devices)", device->id, g_hash_table_size(device_list));
	return stonith_ok;
	}

	static int stonith_device_remove(xmlNode *msg)
	{
	xmlNode *dev = get_xpath_object("//"F_STONITH_DEVICE, msg, LOG_ERR);
	const char *id = crm_element_value(dev, XML_ATTR_ID);
	if(g_hash_table_remove(device_list, id)) {
	crm_info("Removed '%s' from the device list (%d active devices)",
	id, g_hash_table_size(device_list));
	} else {
	crm_info("Device '%s' not found (%d active devices)",
	id, g_hash_table_size(device_list));
	}

	return stonith_ok;
	}

	static GListPtr parse_host_list(const char *hosts)
	{
	int lpc = 0;
	int max = 0;
	int last = 0;
	GListPtr output = NULL;

	if(hosts) {
	max = strlen(hosts);
	}

	for(lpc = 0; lpc < max; lpc++) {
	if(isspace(hosts[lpc]) \|\| hosts[lpc] == ',') {
	int rc = 0;
	char *entry = NULL;
	crm_malloc0(entry, 1 + lpc - last);
	rc = sscanf(hosts+last, "%[a-zA-Z0-9_-]", entry);
	if(rc == 1) {
	crm_debug("Adding '%s'", entry);
	output = g_list_append(output, entry);
	entry = NULL;
	}

	crm_free(entry);
	last = lpc + 1;
	}
	}

	return output;
	}

	static gboolean string_in_list(GListPtr list, const char *item)
	{
	int lpc = 0;
	int max = g_list_length(list);
	for(lpc = 0; lpc < max; lpc ++) {
	const char *value = g_list_nth_data(list, lpc);
	if(safe_str_eq(item, value)) {
	return TRUE;
	}
	}
	return FALSE;
	}

	static const char get_device_port(stonith_device_t dev, const char *host)
	{
	time_t now;
	char *alias = NULL;

	if(host == NULL) {
	return NULL;
	}

	now = time(NULL);
	alias = g_hash_table_lookup(dev->aliases, host);

	if(dev->targets == NULL \|\| dev->targets_age + 300 < now) {
	char *output = NULL;
	int rc = stonith_ok;
	int exec_rc = stonith_ok;

	slist_destroy(char, item, dev->targets, crm_free(item));
	dev->targets = NULL;

	exec_rc = run_agent(dev->agent, dev->params, "list", NULL, &rc, &output, NULL);
	if(exec_rc < 0 \|\| rc != 0) {
	crm_info("Disabling port list queries for %s", dev->id);
	dev->targets_age = -1;

	} else {
	crm_info("Refreshing port list for %s", dev->id);
	dev->targets = parse_host_list(output);
	dev->targets_age = now;
	}

	crm_free(output);
	}

	/* See if portmap is defined and look up the translated name */
	if(alias && dev->targets == NULL) {
	return alias;

	} else if(alias && string_in_list(dev->targets, alias)) {
	return alias;

	} else if(dev->targets && string_in_list(dev->targets, host)) {
	return host;
	}

	return NULL;
	}

	static int stonith_device_action(xmlNode msg, char *output)
	{
	int rc = stonith_ok;
	xmlNode *dev = get_xpath_object("//"F_STONITH_DEVICE, msg, LOG_ERR);
	const char *id = crm_element_value(dev, F_STONITH_DEVICE);
	const char *action = crm_element_value(dev, F_STONITH_ACTION);

	async_command_t *cmd = NULL;
	stonith_device_t *device = NULL;

	if(id) {
	crm_info("Looking for '%s'", id);
	device = g_hash_table_lookup(device_list, id);

	cmd = create_async_command(msg, action);
	if(cmd == NULL) {
	return st_err_internal;
	}

	} else {
	/* TODO: Check its a metadata op */
	/* TODO: Perform asyncrnously like everything else (can't get child output yet) */
	device = build_device_from_xml(msg);
	device->id = crm_strdup("_transient_");
	}

	if(device) {
	int exec_rc = 0;
	const char *device_port = NULL;

	if(cmd) {
	device_port = get_device_port(device, cmd->port);
	if(cmd->port && device_port == NULL) {
	crm_err("Unknown or unhandled port '%s' for device '%s'", cmd->port, device->id);
	free_async_command(cmd);
	return st_err_missing;
	}
	cmd->device = device->id;
	}

	crm_info("Calling '%s' with action '%s'%s%s",
	device->id, action, device_port?" on port ":"", device_port?device_port:"");

	exec_rc = run_agent(
	device->agent, device->params, action, device_port, &rc, output, cmd);
	if(exec_rc < 0 \|\| rc != 0) {
	crm_warn("Operation %s on %s failed (%d/%d): %.100s",
	action, device->id, exec_rc, rc, *output);

	} else if(exec_rc > 0) {
	crm_info("Operation %s on %s active with pid: %d", action, device->id, exec_rc);

	} else {
	crm_info("Operation %s on %s passed: %.100s", action, device->id, *output);
	}

	} else {
	crm_notice("Device %s not found", id);
	rc = st_err_missing;
	}

	if(id == NULL) {
	free_device(device);
	}
	return rc;
	}

	struct device_search_s
	{
	const char *host;
	GListPtr capable;
	};

	static void search_devices(
	gpointer key, gpointer value, gpointer user_data)
	{
	stonith_device_t *dev = value;
	struct device_search_s *search = user_data;
	if(search->host == NULL \|\| get_device_port(dev, search->host)) {
	search->capable = g_list_append(search->capable, value);
	}
	}

	static int stonith_query(xmlNode msg, xmlNode *list)
	{
	struct device_search_s search;
	xmlNode *dev = get_xpath_object("//@"F_STONITH_TARGET, msg, LOG_ERR);

	search.host = NULL;
	search.capable = NULL;

	if(dev) {
	search.host = crm_element_value(dev, F_STONITH_TARGET);
	}

	crm_log_xml_info(msg, "Query");

	g_hash_table_foreach(device_list, search_devices, &search);
	crm_info("Found %d matching devices for '%s'", g_list_length(search.capable), search.host);

	/* Pack the results into data */
	if(list) {
	*list = create_xml_node(NULL, __FUNCTION__);
	crm_xml_add_int(*list, "st-available-devices", g_list_length(search.capable));
	slist_iter(device, stonith_device_t, search.capable, lpc,
	dev = create_xml_node(*list, F_STONITH_DEVICE);
	crm_xml_add(dev, XML_ATTR_ID, device->id);
	crm_xml_add(dev, "namespace", device->namespace);
	crm_xml_add(dev, "agent", device->agent);
	);
	}

	return g_list_length(search.capable);
	}

	static void log_operation(async_command_t cmd, int rc, int pid, const char next)
	{
	if(rc == 0) {
	next = NULL;
	}

	if(cmd->port != NULL) {
	do_crm_log(rc==0?LOG_INFO:LOG_ERR,
	"Operation '%s' [%d] for host '%s' with device '%s' returned: %d%s%s",
	cmd->action, pid, cmd->port, cmd->device, rc, next?". Trying: ":"", next?next:"");
	} else {
	do_crm_log(rc==0?LOG_INFO:LOG_NOTICE,
	"Operation '%s' [%d] for device '%s' returned: %d%s%s",
	cmd->action, pid, cmd->device, rc, next?". Trying: ":"", next?next:"");
	}
	}

	static void
	exec_child_done(ProcTrack* proc, int status, int signum, int rc, int waslogged)
	{
	int len = 0;
	int more = 0;

	char *output = NULL;
	xmlNode *reply = NULL;

	int pid = proctrack_pid(proc);
	async_command_t *cmd = proctrack_data(proc);

	CRM_CHECK(cmd != NULL, return);
	active_children--;

	if( signum ) {
	rc = st_err_signal;
	if( proctrack_timedout(proc) ) {
	crm_warn("Child '%d' performing action '%s' with '%s' timed out",
	pid, cmd->action, cmd->device);
	rc = st_err_timeout;
	}
	}

	do {
	char buffer[500];
	errno = 0;
	more = read(cmd->stdout, buffer, 500);

	if(more > 0) {
	buffer[more] = 0;
	crm_realloc(output, len + more + 1);
	sprintf(output+len, "%s", buffer);
	crm_debug("Output: %s", output+len);
	len += more;
	}

	} while (more == 500 \|\| (more < 0 && errno == EINTR));

	while(rc != 0 && cmd->device_next) {
	int exec_rc = 0;
	stonith_device_t *dev = cmd->device_next->data;
	const char *port = get_device_port(dev, cmd->port);

	log_operation(cmd, rc, pid, dev->id);

	cmd->device = dev->id;
	cmd->device_next = cmd->device_next->next;

	exec_rc = run_agent(dev->agent, dev->params, cmd->action, port, &rc, NULL, cmd);
	if(exec_rc > 0) {
	goto done;
	}
	pid = exec_rc;
	}

	log_operation(cmd, rc, pid, NULL);
	reply = stonith_construct_async_reply(cmd, NULL, NULL, rc);

	if(cmd->origin) {
	send_cluster_message(cmd->origin, crm_msg_stonith_ng, reply, FALSE);

	} else {
	do_local_reply(reply, cmd->client, cmd->options & stonith_sync_call, FALSE);
	}

	free_async_command(cmd);
	done:
	reset_proctrack_data(proc);
	crm_free(output);
	free_xml(reply);
	}

	static int stonith_fence(xmlNode msg, const char action)
	{
	int rc = 0;
	struct device_search_s search;
	stonith_device_t *device = NULL;
	async_command_t *cmd = create_async_command(msg, crm_element_value(msg, F_STONITH_ACTION));
	xmlNode *dev = get_xpath_object("//@"F_STONITH_TARGET, msg, LOG_ERR);

	if(cmd == NULL) {
	return st_err_internal;
	}

	search.capable = NULL;
	search.host = crm_element_value(dev, F_STONITH_TARGET);

	crm_log_xml_info(msg, "Exec");

	g_hash_table_foreach(device_list, search_devices, &search);
	crm_info("Found %d matching devices for '%s'", g_list_length(search.capable), search.host);

	if(g_list_length(search.capable) == 0) {
	return st_err_missing;
	}

	device = search.capable->data;
	cmd->device = device->id;

	if(g_list_length(search.capable) > 1) {
	/* TODO: Order based on priority */
	cmd->device_list = search.capable;
	}

	return run_agent(device->agent, device->params, cmd->action, cmd->port, &rc, NULL, cmd);
	}

	xmlNode stonith_construct_reply(xmlNode request, char output, xmlNode data, int rc)
	{
	int lpc = 0;
	xmlNode *reply = NULL;

	const char *name = NULL;
	const char *value = NULL;
	const char *names[] = {
	F_STONITH_OPERATION,
	F_STONITH_CALLID,
	F_STONITH_CLIENTID,
	F_STONITH_REMOTE,
	F_STONITH_CALLOPTS
	};

	crm_debug_4("Creating a basic reply");
	reply = create_xml_node(NULL, T_STONITH_REPLY);
	crm_xml_add(reply, F_TYPE, T_STONITH_NG);

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

	crm_xml_add_int(reply, F_STONITH_RC, rc);
	crm_xml_add(reply, "st_output", output);

	if(data != NULL) {
	crm_debug_4("Attaching reply output");
	add_message_xml(reply, F_STONITH_CALLDATA, data);
	}
	return reply;
	}

	xmlNode stonith_construct_async_reply(async_command_t cmd, char output, xmlNode data, int rc)
	{
	xmlNode *reply = NULL;

	crm_debug_4("Creating a basic reply");
	reply = create_xml_node(NULL, T_STONITH_REPLY);
	crm_xml_add(reply, F_TYPE, T_STONITH_NG);

	crm_xml_add(reply, F_STONITH_OPERATION, cmd->op);
	crm_xml_add(reply, F_STONITH_REMOTE, cmd->remote);
	crm_xml_add(reply, F_STONITH_CLIENTID, cmd->client);
	crm_xml_add_int(reply, F_STONITH_CALLID, cmd->id);
	crm_xml_add_int(reply, F_STONITH_CALLOPTS, cmd->options);

	crm_xml_add_int(reply, F_STONITH_RC, rc);
	crm_xml_add(reply, "st_output", output);

	if(data != NULL) {
	crm_debug_4("Attaching reply output");
	add_message_xml(reply, F_STONITH_CALLDATA, data);
	}
	return reply;
	}

	void
	stonith_command(stonith_client_t client, xmlNode request, const char *remote)
	{
	int rc = stonith_ok;
	int call_options = 0;

	gboolean is_reply = FALSE;

	xmlNode *reply = NULL;
	xmlNode *data = NULL;

	char *output = NULL;
	const char *op = crm_element_value(request, F_STONITH_OPERATION);
	const char *client_id = crm_element_value(request, F_STONITH_CLIENTID);

	crm_element_value_int(request, F_STONITH_CALLOPTS, &call_options);
	if(get_xpath_object("//"T_STONITH_REPLY, request, LOG_DEBUG_3)) {
	is_reply = TRUE;
	}

	if(device_list == NULL) {
	device_list = g_hash_table_new_full(
	g_str_hash, g_str_equal, NULL, free_device);
	}

	crm_debug("Processing %s%s from %s", op, is_reply?" reply":"",
	client?client->name:remote);

	if(crm_str_eq(op, CRM_OP_REGISTER, TRUE)) {
	return;

	} else if(crm_str_eq(op, T_STONITH_NOTIFY, TRUE)) {
	const char *flag_name = NULL;

	flag_name = crm_element_value(request, F_STONITH_NOTIFY_ACTIVATE);
	if(flag_name) {
	crm_debug("Setting %s callbacks for %s (%s): ON",
	flag_name, client->name, client->id);
	client->flags \|= get_stonith_flag(flag_name);
	}

	flag_name = crm_element_value(request, F_STONITH_NOTIFY_DEACTIVATE);
	if(flag_name) {
	crm_debug("Setting %s callbacks for %s (%s): off",
	flag_name, client->name, client->id);
	client->flags \|= get_stonith_flag(flag_name);
	}
	return;

	} else if(crm_str_eq(op, STONITH_OP_DEVICE_ADD, TRUE)) {
	rc = stonith_device_register(request);
	do_stonith_notify(call_options, op, rc, request, NULL);

	} else if(crm_str_eq(op, STONITH_OP_DEVICE_DEL, TRUE)) {
	rc = stonith_device_remove(request);
	do_stonith_notify(call_options, op, rc, request, NULL);


	} else if(crm_str_eq(op, STONITH_OP_EXEC, TRUE)) {
	rc = stonith_device_action(request, &output);

	} else if(crm_str_eq(op, STONITH_OP_FENCE, TRUE)) {
	if(is_reply) {
	process_remote_stonith_exec(request);
	return;

	} else {
	xmlNode *cmd = get_xpath_object("//@"F_STONITH_TARGET, request, LOG_ERR);
	const char *action = crm_element_value(cmd, F_STONITH_ACTION);
	if(remote) {
	rc = stonith_fence(request, action);

	} else {
	crm_log_xml_info(request, "Escalate");
	initiate_remote_stonith_op(client, request, action);
	return;
	}
	}

	} else if(crm_str_eq(op, STONITH_OP_QUERY, TRUE)) {
	if(is_reply) {
	process_remote_stonith_query(request);

	} else {
	rc = stonith_query(request, &data);
	}
	}

	crm_debug("Processing %s%s from %s: rc=%d", op, is_reply?" reply":"",
	client?client->name:remote, rc);

	if(is_reply) {

	} else if(remote) {
	reply = stonith_construct_reply(request, output, data, rc);
	send_cluster_message(remote, crm_msg_stonith_ng, reply, FALSE);

	} else if(rc <= 0) {
	reply = stonith_construct_reply(request, output, data, rc);
	do_local_reply(reply, client_id, call_options & stonith_sync_call, remote!=NULL);
	free_xml(reply);
	}

	crm_free(output);
	free_xml(data);
	}

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