utils.c
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utils.c
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	/*
	* 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 <dlfcn.h>

	#ifndef _GNU_SOURCE
	# define _GNU_SOURCE
	#endif

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

	#include <stdio.h>
	#include <unistd.h>
	#include <string.h>
	#include <stdlib.h>
	#include <limits.h>
	#include <ctype.h>
	#include <pwd.h>
	#include <time.h>
	#include <libgen.h>
	#include <signal.h>

	#include <qb/qbdefs.h>

	#include <crm/crm.h>
	#include <crm/lrmd.h>
	#include <crm/services.h>
	#include <crm/msg_xml.h>
	#include <crm/cib/internal.h>
	#include <crm/common/xml.h>
	#include <crm/common/util.h>
	#include <crm/common/ipc.h>
	#include <crm/common/iso8601.h>
	#include <crm/common/mainloop.h>
	#include <crm/attrd.h>
	#include <libxml2/libxml/relaxng.h>

	#ifndef MAXLINE
	# define MAXLINE 512
	#endif

	#ifdef HAVE_GETOPT_H
	# include <getopt.h>
	#endif

	#ifndef PW_BUFFER_LEN
	# define PW_BUFFER_LEN 500
	#endif

	CRM_TRACE_INIT_DATA(common);

	gboolean crm_config_error = FALSE;
	gboolean crm_config_warning = FALSE;
	char *crm_system_name = NULL;

	int node_score_red = 0;
	int node_score_green = 0;
	int node_score_yellow = 0;
	int node_score_infinity = INFINITY;

	static struct crm_option *crm_long_options = NULL;
	static const char *crm_app_description = NULL;
	static char *crm_short_options = NULL;
	static const char *crm_app_usage = NULL;

	int
	crm_exit(int rc)
	{
	mainloop_cleanup();

	#if HAVE_LIBXML2
	crm_trace("cleaning up libxml");
	crm_xml_cleanup();
	#endif

	crm_trace("exit %d", rc);
	qb_log_fini();

	free(crm_short_options);
	free(crm_system_name);

	exit(ABS(rc)); /* Always exit with a positive value so that it can be passed to crm_error
	*
	* Otherwise the system wraps it around and people
	* have to jump through hoops figuring out what the
	* error was
	*/
	return rc; /* Can never happen, but allows return crm_exit(rc)
	* where "return rc" was used previously - which
	* keeps compilers happy.
	*/
	}

	gboolean
	check_time(const char *value)
	{
	if (crm_get_msec(value) < 5000) {
	return FALSE;
	}
	return TRUE;
	}

	gboolean
	check_timer(const char *value)
	{
	if (crm_get_msec(value) < 0) {
	return FALSE;
	}
	return TRUE;
	}

	gboolean
	check_sbd_timeout(const char *value)
	{
	const char *env_value = getenv("SBD_WATCHDOG_TIMEOUT");

	long sbd_timeout = crm_get_msec(env_value);
	long st_timeout = crm_get_msec(value);

	if(value == NULL \|\| st_timeout <= 0) {
	crm_notice("Watchdog may be enabled but stonith-watchdog-timeout is disabled: %s", value);

	} else if(pcmk_locate_sbd() == 0) {
	do_crm_log_always(LOG_EMERG, "Shutting down: stonith-watchdog-timeout is configured (%ldms) but SBD is not active", st_timeout);
	crm_exit(DAEMON_RESPAWN_STOP);
	return FALSE;

	} else if(st_timeout < sbd_timeout) {
	do_crm_log_always(LOG_EMERG, "Shutting down: stonith-watchdog-timeout (%ldms) is too short (must be greater than %ldms)",
	st_timeout, sbd_timeout);
	crm_exit(DAEMON_RESPAWN_STOP);
	return FALSE;
	}

	crm_info("Watchdog functionality is consistent: %s delay exceeds timeout of %s", value, env_value);
	return TRUE;
	}


	gboolean
	check_boolean(const char *value)
	{
	int tmp = FALSE;

	if (crm_str_to_boolean(value, &tmp) != 1) {
	return FALSE;
	}
	return TRUE;
	}

	gboolean
	check_number(const char *value)
	{
	errno = 0;
	if (value == NULL) {
	return FALSE;

	} else if (safe_str_eq(value, MINUS_INFINITY_S)) {

	} else if (safe_str_eq(value, INFINITY_S)) {

	} else {
	crm_int_helper(value, NULL);
	}

	if (errno != 0) {
	return FALSE;
	}
	return TRUE;
	}

	gboolean
	check_quorum(const char *value)
	{
	if (safe_str_eq(value, "stop")) {
	return TRUE;

	} else if (safe_str_eq(value, "freeze")) {
	return TRUE;

	} else if (safe_str_eq(value, "ignore")) {
	return TRUE;

	} else if (safe_str_eq(value, "suicide")) {
	return TRUE;
	}
	return FALSE;
	}

	gboolean
	check_script(const char *value)
	{
	struct stat st;

	if(safe_str_eq(value, "/dev/null")) {
	return TRUE;
	}

	if(stat(value, &st) != 0) {
	crm_err("Script %s does not exist", value);
	return FALSE;
	}

	if(S_ISREG(st.st_mode) == 0) {
	crm_err("Script %s is not a regular file", value);
	return FALSE;
	}

	if( (st.st_mode & (S_IXUSR \| S_IXGRP )) == 0) {
	crm_err("Script %s is not executable", value);
	return FALSE;
	}

	return TRUE;
	}

	gboolean
	check_utilization(const char *value)
	{
	char *end = NULL;
	long number = strtol(value, &end, 10);

	if(end && end[0] != '%') {
	return FALSE;
	} else if(number < 0) {
	return FALSE;
	}

	return TRUE;
	}

	int
	char2score(const char *score)
	{
	int score_f = 0;

	if (score == NULL) {

	} else if (safe_str_eq(score, MINUS_INFINITY_S)) {
	score_f = -node_score_infinity;

	} else if (safe_str_eq(score, INFINITY_S)) {
	score_f = node_score_infinity;

	} else if (safe_str_eq(score, "+" INFINITY_S)) {
	score_f = node_score_infinity;

	} else if (safe_str_eq(score, "red")) {
	score_f = node_score_red;

	} else if (safe_str_eq(score, "yellow")) {
	score_f = node_score_yellow;

	} else if (safe_str_eq(score, "green")) {
	score_f = node_score_green;

	} else {
	score_f = crm_parse_int(score, NULL);
	if (score_f > 0 && score_f > node_score_infinity) {
	score_f = node_score_infinity;

	} else if (score_f < 0 && score_f < -node_score_infinity) {
	score_f = -node_score_infinity;
	}
	}

	return score_f;
	}

	char *
	score2char_stack(int score, char *buf, size_t len)
	{
	if (score >= node_score_infinity) {
	strncpy(buf, INFINITY_S, 9);
	} else if (score <= -node_score_infinity) {
	strncpy(buf, MINUS_INFINITY_S , 10);
	} else {
	return crm_itoa_stack(score, buf, len);
	}

	return buf;
	}

	char *
	score2char(int score)
	{
	if (score >= node_score_infinity) {
	return strdup(INFINITY_S);

	} else if (score <= -node_score_infinity) {
	return strdup("-" INFINITY_S);
	}
	return crm_itoa(score);
	}

	const char *
	cluster_option(GHashTable * options, gboolean(validate) (const char ),
	const char name, const char old_name, const char *def_value)
	{
	const char *value = NULL;

	CRM_ASSERT(name != NULL);

	if (options != NULL) {
	value = g_hash_table_lookup(options, name);
	}

	if (value == NULL && old_name && options != NULL) {
	value = g_hash_table_lookup(options, old_name);
	if (value != NULL) {
	crm_config_warn("Using deprecated name '%s' for"
	" cluster option '%s'", old_name, name);
	g_hash_table_insert(options, strdup(name), strdup(value));
	value = g_hash_table_lookup(options, old_name);
	}
	}

	if (value == NULL) {
	crm_trace("Using default value '%s' for cluster option '%s'", def_value, name);

	if (options == NULL) {
	return def_value;

	} else if(def_value == NULL) {
	return def_value;
	}

	g_hash_table_insert(options, strdup(name), strdup(def_value));
	value = g_hash_table_lookup(options, name);
	}

	if (validate && validate(value) == FALSE) {
	crm_config_err("Value '%s' for cluster option '%s' is invalid."
	" Defaulting to %s", value, name, def_value);
	g_hash_table_replace(options, strdup(name), strdup(def_value));
	value = g_hash_table_lookup(options, name);
	}

	return value;
	}

	const char *
	get_cluster_pref(GHashTable * options, pe_cluster_option * option_list, int len, const char *name)
	{
	int lpc = 0;
	const char *value = NULL;
	gboolean found = FALSE;

	for (lpc = 0; lpc < len; lpc++) {
	if (safe_str_eq(name, option_list[lpc].name)) {
	found = TRUE;
	value = cluster_option(options,
	option_list[lpc].is_valid,
	option_list[lpc].name,
	option_list[lpc].alt_name, option_list[lpc].default_value);
	}
	}
	CRM_CHECK(found, crm_err("No option named: %s", name));
	return value;
	}

	void
	config_metadata(const char name, const char version, const char *desc_short,
	const char desc_long, pe_cluster_option option_list, int len)
	{
	int lpc = 0;

	fprintf(stdout, "<?xml version=\"1.0\"?>"
	"<!DOCTYPE resource-agent SYSTEM \"ra-api-1.dtd\">\n"
	"<resource-agent name=\"%s\">\n"
	" <version>%s</version>\n"
	" <longdesc lang=\"en\">%s</longdesc>\n"
	" <shortdesc lang=\"en\">%s</shortdesc>\n"
	" <parameters>\n", name, version, desc_long, desc_short);

	for (lpc = 0; lpc < len; lpc++) {
	if (option_list[lpc].description_long == NULL && option_list[lpc].description_short == NULL) {
	continue;
	}
	fprintf(stdout, " <parameter name=\"%s\" unique=\"0\">\n"
	" <shortdesc lang=\"en\">%s</shortdesc>\n"
	" <content type=\"%s\" default=\"%s\"/>\n"
	" <longdesc lang=\"en\">%s%s%s</longdesc>\n"
	" </parameter>\n",
	option_list[lpc].name,
	option_list[lpc].description_short,
	option_list[lpc].type,
	option_list[lpc].default_value,
	option_list[lpc].description_long ? option_list[lpc].
	description_long : option_list[lpc].description_short,
	option_list[lpc].values ? " Allowed values: " : "",
	option_list[lpc].values ? option_list[lpc].values : "");
	}
	fprintf(stdout, " </parameters>\n</resource-agent>\n");
	}

	void
	verify_all_options(GHashTable * options, pe_cluster_option * option_list, int len)
	{
	int lpc = 0;

	for (lpc = 0; lpc < len; lpc++) {
	cluster_option(options,
	option_list[lpc].is_valid,
	option_list[lpc].name,
	option_list[lpc].alt_name, option_list[lpc].default_value);
	}
	}

	char *
	generate_hash_key(const char crm_msg_reference, const char sys)
	{
	char *hash_key = crm_concat(sys ? sys : "none", crm_msg_reference, '_');

	crm_trace("created hash key: (%s)", hash_key);
	return hash_key;
	}


	int
	crm_user_lookup(const char name, uid_t uid, gid_t * gid)
	{
	int rc = -1;
	char *buffer = NULL;
	struct passwd pwd;
	struct passwd *pwentry = NULL;

	buffer = calloc(1, PW_BUFFER_LEN);
	getpwnam_r(name, &pwd, buffer, PW_BUFFER_LEN, &pwentry);
	if (pwentry) {
	rc = 0;
	if (uid) {
	*uid = pwentry->pw_uid;
	}
	if (gid) {
	*gid = pwentry->pw_gid;
	}
	crm_trace("Cluster user %s has uid=%d gid=%d", name, pwentry->pw_uid, pwentry->pw_gid);

	} else {
	crm_err("Cluster user %s does not exist", name);
	}

	free(buffer);
	return rc;
	}

	static int
	crm_version_helper(const char text, char *end_text)
	{
	int atoi_result = -1;

	CRM_ASSERT(end_text != NULL);

	errno = 0;

	if (text != NULL && text[0] != 0) {
	atoi_result = (int)strtol(text, end_text, 10);

	if (errno == EINVAL) {
	crm_err("Conversion of '%s' %c failed", text, text[0]);
	atoi_result = -1;
	}
	}
	return atoi_result;
	}

	/*
	* version1 < version2 : -1
	* version1 = version2 : 0
	* version1 > version2 : 1
	*/
	int
	compare_version(const char version1, const char version2)
	{
	int rc = 0;
	int lpc = 0;
	char ver1_copy = NULL, ver2_copy = NULL;
	char rest1 = NULL, rest2 = NULL;

	if (version1 == NULL && version2 == NULL) {
	return 0;
	} else if (version1 == NULL) {
	return -1;
	} else if (version2 == NULL) {
	return 1;
	}

	ver1_copy = strdup(version1);
	ver2_copy = strdup(version2);
	rest1 = ver1_copy;
	rest2 = ver2_copy;

	while (1) {
	int digit1 = 0;
	int digit2 = 0;

	lpc++;

	if (rest1 == rest2) {
	break;
	}

	if (rest1 != NULL) {
	digit1 = crm_version_helper(rest1, &rest1);
	}

	if (rest2 != NULL) {
	digit2 = crm_version_helper(rest2, &rest2);
	}

	if (digit1 < digit2) {
	rc = -1;
	break;

	} else if (digit1 > digit2) {
	rc = 1;
	break;
	}

	if (rest1 != NULL && rest1[0] == '.') {
	rest1++;
	}
	if (rest1 != NULL && rest1[0] == 0) {
	rest1 = NULL;
	}

	if (rest2 != NULL && rest2[0] == '.') {
	rest2++;
	}
	if (rest2 != NULL && rest2[0] == 0) {
	rest2 = NULL;
	}
	}

	free(ver1_copy);
	free(ver2_copy);

	if (rc == 0) {
	crm_trace("%s == %s (%d)", version1, version2, lpc);
	} else if (rc < 0) {
	crm_trace("%s < %s (%d)", version1, version2, lpc);
	} else if (rc > 0) {
	crm_trace("%s > %s (%d)", version1, version2, lpc);
	}

	return rc;
	}

	gboolean do_stderr = FALSE;

	#ifndef NUMCHARS
	# define NUMCHARS "0123456789."
	#endif

	#ifndef WHITESPACE
	# define WHITESPACE " \t\n\r\f"
	#endif

	unsigned long long
	crm_get_interval(const char *input)
	{
	unsigned long long msec = 0;

	if (input == NULL) {
	return msec;

	} else if (input[0] != 'P') {
	long long tmp = crm_get_msec(input);

	if(tmp > 0) {
	msec = tmp;
	}

	} else {
	crm_time_t *interval = crm_time_parse_duration(input);

	msec = 1000 * crm_time_get_seconds(interval);
	crm_time_free(interval);
	}

	return msec;
	}

	long long
	crm_get_msec(const char *input)
	{
	const char *cp = input;
	const char *units;
	long long multiplier = 1000;
	long long divisor = 1;
	long long msec = -1;
	char *end_text = NULL;

	/* double dret; */

	if (input == NULL) {
	return msec;
	}

	cp += strspn(cp, WHITESPACE);
	units = cp + strspn(cp, NUMCHARS);
	units += strspn(units, WHITESPACE);

	if (strchr(NUMCHARS, *cp) == NULL) {
	return msec;
	}

	if (strncasecmp(units, "ms", 2) == 0 \|\| strncasecmp(units, "msec", 4) == 0) {
	multiplier = 1;
	divisor = 1;
	} else if (strncasecmp(units, "us", 2) == 0 \|\| strncasecmp(units, "usec", 4) == 0) {
	multiplier = 1;
	divisor = 1000;
	} else if (strncasecmp(units, "s", 1) == 0 \|\| strncasecmp(units, "sec", 3) == 0) {
	multiplier = 1000;
	divisor = 1;
	} else if (strncasecmp(units, "m", 1) == 0 \|\| strncasecmp(units, "min", 3) == 0) {
	multiplier = 60 * 1000;
	divisor = 1;
	} else if (strncasecmp(units, "h", 1) == 0 \|\| strncasecmp(units, "hr", 2) == 0) {
	multiplier = 60 * 60 * 1000;
	divisor = 1;
	} else if (units != EOS && units != '\n' && *units != '\r') {
	return msec;
	}

	msec = crm_int_helper(cp, &end_text);
	if (msec > LLONG_MAX/multiplier) {
	/* arithmetics overflow while multiplier/divisor mutually exclusive */
	return LLONG_MAX;
	}
	msec *= multiplier;
	msec /= divisor;
	/* dret += 0.5; */
	/* msec = (long long)dret; */
	return msec;
	}

	char *
	generate_op_key(const char rsc_id, const char op_type, int interval)
	{
	int len = 35;
	char *op_id = NULL;

	CRM_CHECK(rsc_id != NULL, return NULL);
	CRM_CHECK(op_type != NULL, return NULL);

	len += strlen(op_type);
	len += strlen(rsc_id);
	op_id = malloc(len);
	CRM_CHECK(op_id != NULL, return NULL);
	sprintf(op_id, "%s_%s_%d", rsc_id, op_type, interval);
	return op_id;
	}

	gboolean
	parse_op_key(const char key, char rsc_id, char op_type, int interval)
	{
	char *notify = NULL;
	char *mutable_key = NULL;
	char *mutable_key_ptr = NULL;
	int len = 0, offset = 0, ch = 0;

	CRM_CHECK(key != NULL, return FALSE);

	*interval = 0;
	len = strlen(key);
	offset = len - 1;

	crm_trace("Source: %s", key);

	while (offset > 0 && isdigit(key[offset])) {
	int digits = len - offset;

	ch = key[offset] - '0';
	CRM_CHECK(ch < 10, return FALSE);
	CRM_CHECK(ch >= 0, return FALSE);
	while (digits > 1) {
	digits--;
	ch = ch * 10;
	}
	*interval += ch;
	offset--;
	}

	crm_trace(" Interval: %d", *interval);
	CRM_CHECK(key[offset] == '_', return FALSE);

	mutable_key = strdup(key);
	mutable_key[offset] = 0;
	offset--;

	while (offset > 0 && key[offset] != '_') {
	offset--;
	}

	CRM_CHECK(key[offset] == '_', free(mutable_key);
	return FALSE);

	mutable_key_ptr = mutable_key + offset + 1;

	crm_trace(" Action: %s", mutable_key_ptr);

	*op_type = strdup(mutable_key_ptr);

	mutable_key[offset] = 0;
	offset--;

	CRM_CHECK(mutable_key != mutable_key_ptr, free(mutable_key);
	return FALSE);

	notify = strstr(mutable_key, "_post_notify");
	if (notify && safe_str_eq(notify, "_post_notify")) {
	notify[0] = 0;
	}

	notify = strstr(mutable_key, "_pre_notify");
	if (notify && safe_str_eq(notify, "_pre_notify")) {
	notify[0] = 0;
	}

	crm_trace(" Resource: %s", mutable_key);
	*rsc_id = mutable_key;

	return TRUE;
	}

	char *
	generate_notify_key(const char rsc_id, const char notify_type, const char *op_type)
	{
	int len = 12;
	char *op_id = NULL;

	CRM_CHECK(rsc_id != NULL, return NULL);
	CRM_CHECK(op_type != NULL, return NULL);
	CRM_CHECK(notify_type != NULL, return NULL);

	len += strlen(op_type);
	len += strlen(rsc_id);
	len += strlen(notify_type);
	if(len > 0) {
	op_id = malloc(len);
	}
	if (op_id != NULL) {
	sprintf(op_id, "%s_%s_notify_%s_0", rsc_id, notify_type, op_type);
	}
	return op_id;
	}

	char *
	generate_transition_magic_v202(const char *transition_key, int op_status)
	{
	int len = 80;
	char *fail_state = NULL;

	CRM_CHECK(transition_key != NULL, return NULL);

	len += strlen(transition_key);

	fail_state = malloc(len);
	if (fail_state != NULL) {
	snprintf(fail_state, len, "%d:%s", op_status, transition_key);
	}
	return fail_state;
	}

	char *
	generate_transition_magic(const char *transition_key, int op_status, int op_rc)
	{
	int len = 80;
	char *fail_state = NULL;

	CRM_CHECK(transition_key != NULL, return NULL);

	len += strlen(transition_key);

	fail_state = malloc(len);
	if (fail_state != NULL) {
	snprintf(fail_state, len, "%d:%d;%s", op_status, op_rc, transition_key);
	}
	return fail_state;
	}

	gboolean
	decode_transition_magic(const char magic, char uuid, int transition_id, int *action_id,
	int op_status, int op_rc, int *target_rc)
	{
	int res = 0;
	char *key = NULL;
	gboolean result = TRUE;

	CRM_CHECK(magic != NULL, return FALSE);
	CRM_CHECK(op_rc != NULL, return FALSE);
	CRM_CHECK(op_status != NULL, return FALSE);

	key = calloc(1, strlen(magic) + 1);
	res = sscanf(magic, "%d:%d;%s", op_status, op_rc, key);
	if (res != 3) {
	crm_warn("Only found %d items in: '%s'", res, magic);
	free(key);
	return FALSE;
	}

	CRM_CHECK(decode_transition_key(key, uuid, transition_id, action_id, target_rc), result = FALSE);

	free(key);
	return result;
	}

	char *
	generate_transition_key(int transition_id, int action_id, int target_rc, const char *node)
	{
	int len = 40;
	char *fail_state = NULL;

	CRM_CHECK(node != NULL, return NULL);

	len += strlen(node);

	fail_state = malloc(len);
	if (fail_state != NULL) {
	snprintf(fail_state, len, "%d:%d:%d:%-*s", action_id, transition_id, target_rc, 36, node);
	}
	return fail_state;
	}

	gboolean
	decode_transition_key(const char key, char uuid, int transition_id, int *action_id,
	int *target_rc)
	{
	int res = 0;
	gboolean done = FALSE;

	CRM_CHECK(uuid != NULL, return FALSE);
	CRM_CHECK(target_rc != NULL, return FALSE);
	CRM_CHECK(action_id != NULL, return FALSE);
	CRM_CHECK(transition_id != NULL, return FALSE);

	*uuid = calloc(1, 37);
	res = sscanf(key, "%d:%d:%d:%36s", action_id, transition_id, target_rc, *uuid);
	switch (res) {
	case 4:
	/* Post Pacemaker 0.6 */
	done = TRUE;
	break;
	case 3:
	case 2:
	/* this can be tricky - the UUID might start with an integer */

	/* Until Pacemaker 0.6 */
	done = TRUE;
	*target_rc = -1;
	res = sscanf(key, "%d:%d:%36s", action_id, transition_id, *uuid);
	if (res == 2) {
	*action_id = -1;
	res = sscanf(key, "%d:%36s", transition_id, *uuid);
	CRM_CHECK(res == 2, done = FALSE);

	} else if (res != 3) {
	CRM_CHECK(res == 3, done = FALSE);
	}
	break;

	case 1:
	/* Prior to Heartbeat 2.0.8 */
	done = TRUE;
	*action_id = -1;
	*target_rc = -1;
	res = sscanf(key, "%d:%36s", transition_id, *uuid);
	CRM_CHECK(res == 2, done = FALSE);
	break;
	default:
	crm_crit("Unhandled sscanf result (%d) for %s", res, key);
	}

	if (strlen(*uuid) != 36) {
	crm_warn("Bad UUID (%s) in sscanf result (%d) for %s", *uuid, res, key);
	}

	if (done == FALSE) {
	crm_err("Cannot decode '%s' rc=%d", key, res);

	free(*uuid);
	*uuid = NULL;
	*target_rc = -1;
	*action_id = -1;
	*transition_id = -1;
	}

	return done;
	}

	void
	filter_action_parameters(xmlNode * param_set, const char *version)
	{
	char *key = NULL;
	char *timeout = NULL;
	char *interval = NULL;

	const char *attr_filter[] = {
	XML_ATTR_ID,
	XML_ATTR_CRM_VERSION,
	XML_LRM_ATTR_OP_DIGEST,
	};

	gboolean do_delete = FALSE;
	int lpc = 0;
	static int meta_len = 0;

	if (meta_len == 0) {
	meta_len = strlen(CRM_META);
	}

	if (param_set == NULL) {
	return;
	}

	for (lpc = 0; lpc < DIMOF(attr_filter); lpc++) {
	xml_remove_prop(param_set, attr_filter[lpc]);
	}

	key = crm_meta_name(XML_LRM_ATTR_INTERVAL);
	interval = crm_element_value_copy(param_set, key);
	free(key);

	key = crm_meta_name(XML_ATTR_TIMEOUT);
	timeout = crm_element_value_copy(param_set, key);

	if (param_set) {
	xmlAttrPtr xIter = param_set->properties;

	while (xIter) {
	const char prop_name = (const char )xIter->name;

	xIter = xIter->next;
	do_delete = FALSE;
	if (strncasecmp(prop_name, CRM_META, meta_len) == 0) {
	do_delete = TRUE;
	}

	if (do_delete) {
	xml_remove_prop(param_set, prop_name);
	}
	}
	}

	if (crm_get_msec(interval) > 0 && compare_version(version, "1.0.8") > 0) {
	/* Re-instate the operation's timeout value */
	if (timeout != NULL) {
	crm_xml_add(param_set, key, timeout);
	}
	}

	free(interval);
	free(timeout);
	free(key);
	}

	extern bool crm_is_daemon;

	/* coverity[+kill] */
	void
	crm_abort(const char file, const char function, int line,
	const char *assert_condition, gboolean do_core, gboolean do_fork)
	{
	int rc = 0;
	int pid = 0;
	int status = 0;

	/* Implied by the parent's error logging below */
	/* crm_write_blackbox(0); */

	if(crm_is_daemon == FALSE) {
	/* This is a command line tool - do not fork */

	/* crm_add_logfile(NULL); * Record it to a file? */
	crm_enable_stderr(TRUE); /* Make sure stderr is enabled so we can tell the caller */
	do_fork = FALSE; /* Just crash if needed */
	}

	if (do_core == FALSE) {
	crm_err("%s: Triggered assert at %s:%d : %s", function, file, line, assert_condition);
	return;

	} else if (do_fork) {
	pid = fork();

	} else {
	crm_err("%s: Triggered fatal assert at %s:%d : %s", function, file, line, assert_condition);
	}

	if (pid == -1) {
	crm_crit("%s: Cannot create core for non-fatal assert at %s:%d : %s",
	function, file, line, assert_condition);
	return;

	} else if(pid == 0) {
	/* Child process */
	abort();
	return;
	}

	/* Parent process */
	crm_err("%s: Forked child %d to record non-fatal assert at %s:%d : %s",
	function, pid, file, line, assert_condition);
	crm_write_blackbox(SIGTRAP, NULL);

	do {
	rc = waitpid(pid, &status, 0);
	if(rc == pid) {
	return; /* Job done */
	}

	} while(errno == EINTR);

	if (errno == ECHILD) {
	/* crm_mon does this */
	crm_trace("Cannot wait on forked child %d - SIGCHLD is probably set to SIG_IGN", pid);
	return;
	}
	crm_perror(LOG_ERR, "Cannot wait on forked child %d", pid);
	}

	int
	crm_pid_active(long pid, const char *daemon)
	{
	static int have_proc_pid = 0;

	if(have_proc_pid == 0) {
	char proc_path[PATH_MAX], exe_path[PATH_MAX];

	/* check to make sure pid hasn't been reused by another process */
	snprintf(proc_path, sizeof(proc_path), "/proc/%lu/exe", (long unsigned int)getpid());

	have_proc_pid = 1;
	if(readlink(proc_path, exe_path, PATH_MAX - 1) < 0) {
	have_proc_pid = -1;
	}
	}

	if (pid <= 0) {
	return -1;

	} else if (kill(pid, 0) < 0 && errno == ESRCH) {
	return 0;

	} else if(daemon == NULL \|\| have_proc_pid == -1) {
	return 1;

	} else {
	int rc = 0;
	char proc_path[PATH_MAX], exe_path[PATH_MAX], myexe_path[PATH_MAX];

	/* check to make sure pid hasn't been reused by another process */
	snprintf(proc_path, sizeof(proc_path), "/proc/%lu/exe", pid);

	rc = readlink(proc_path, exe_path, PATH_MAX - 1);
	if (rc < 0 && errno == EACCES) {
	crm_perror(LOG_INFO, "Could not read from %s", proc_path);
	return 1;
	} else if (rc < 0) {
	crm_perror(LOG_ERR, "Could not read from %s", proc_path);
	return 0;
	}


	exe_path[rc] = 0;

	if(daemon[0] != '/') {
	rc = snprintf(myexe_path, sizeof(proc_path), CRM_DAEMON_DIR"/%s", daemon);
	myexe_path[rc] = 0;
	} else {
	rc = snprintf(myexe_path, sizeof(proc_path), "%s", daemon);
	myexe_path[rc] = 0;
	}

	if (strcmp(exe_path, myexe_path) == 0) {
	return 1;
	}
	}

	return 0;
	}

	#define LOCKSTRLEN 11

	long
	crm_read_pidfile(const char *filename)
	{
	int fd;
	struct stat sbuf;
	long pid = -ENOENT;
	char buf[LOCKSTRLEN + 1];

	if ((fd = open(filename, O_RDONLY)) < 0) {
	goto bail;
	}

	if (fstat(fd, &sbuf) >= 0 && sbuf.st_size < LOCKSTRLEN) {
	sleep(2); /* if someone was about to create one,
	* give'm a sec to do so
	*/
	}

	if (read(fd, buf, sizeof(buf)) < 1) {
	goto bail;
	}

	if (sscanf(buf, "%lu", &pid) > 0) {
	if (pid <= 0) {
	pid = -ESRCH;
	} else {
	crm_trace("Got pid %lu from %s\n", pid, filename);
	}
	}

	bail:
	if (fd >= 0) {
	close(fd);
	}
	return pid;
	}

	long
	crm_pidfile_inuse(const char filename, long mypid, const char daemon)
	{
	long pid = crm_read_pidfile(filename);

	if (pid < 2) {
	/* Invalid pid */
	pid = -ENOENT;
	unlink(filename);

	} else if (mypid && pid == mypid) {
	/* In use by us */
	pid = pcmk_ok;

	} else if (crm_pid_active(pid, daemon) == FALSE) {
	/* Contains a stale value */
	unlink(filename);
	pid = -ENOENT;

	} else if (mypid && pid != mypid) {
	/* locked by existing process - give up */
	pid = -EEXIST;
	}

	return pid;
	}

	static int
	crm_lock_pidfile(const char filename, const char name)
	{
	long mypid = 0;
	int fd = 0, rc = 0;
	char buf[LOCKSTRLEN + 1];

	mypid = (unsigned long)getpid();

	rc = crm_pidfile_inuse(filename, 0, name);
	if (rc == -ENOENT) {
	/* exists but the process is not active */

	} else if (rc != pcmk_ok) {
	/* locked by existing process - give up */
	return rc;
	}

	if ((fd = open(filename, O_CREAT \| O_WRONLY \| O_EXCL, 0644)) < 0) {
	/* Hmmh, why did we fail? Anyway, nothing we can do about it */
	return -errno;
	}

	snprintf(buf, sizeof(buf), "%*lu\n", LOCKSTRLEN - 1, mypid);
	rc = write(fd, buf, LOCKSTRLEN);
	close(fd);

	if (rc != LOCKSTRLEN) {
	crm_perror(LOG_ERR, "Incomplete write to %s", filename);
	return -errno;
	}

	return crm_pidfile_inuse(filename, mypid, name);
	}

	void
	crm_make_daemon(const char name, gboolean daemonize, const char pidfile)
	{
	int rc;
	long pid;
	const char *devnull = "/dev/null";

	if (daemonize == FALSE) {
	return;
	}

	/* Check before we even try... */
	rc = crm_pidfile_inuse(pidfile, 1, name);
	if(rc < pcmk_ok && rc != -ENOENT) {
	pid = crm_read_pidfile(pidfile);
	crm_err("%s: already running [pid %ld in %s]", name, pid, pidfile);
	printf("%s: already running [pid %ld in %s]\n", name, pid, pidfile);
	crm_exit(rc);
	}

	pid = fork();
	if (pid < 0) {
	fprintf(stderr, "%s: could not start daemon\n", name);
	crm_perror(LOG_ERR, "fork");
	crm_exit(EINVAL);

	} else if (pid > 0) {
	crm_exit(pcmk_ok);
	}

	rc = crm_lock_pidfile(pidfile, name);
	if(rc < pcmk_ok) {
	crm_err("Could not lock '%s' for %s: %s (%d)", pidfile, name, pcmk_strerror(rc), rc);
	printf("Could not lock '%s' for %s: %s (%d)\n", pidfile, name, pcmk_strerror(rc), rc);
	crm_exit(rc);
	}

	umask(S_IWGRP \| S_IWOTH \| S_IROTH);

	close(STDIN_FILENO);
	(void)open(devnull, O_RDONLY); /* Stdin: fd 0 */
	close(STDOUT_FILENO);
	(void)open(devnull, O_WRONLY); /* Stdout: fd 1 */
	close(STDERR_FILENO);
	(void)open(devnull, O_WRONLY); /* Stderr: fd 2 */
	}

	char *
	crm_meta_name(const char *field)
	{
	int lpc = 0;
	int max = 0;
	char *crm_name = NULL;

	CRM_CHECK(field != NULL, return NULL);
	crm_name = crm_concat(CRM_META, field, '_');

	/* Massage the names so they can be used as shell variables */
	max = strlen(crm_name);
	for (; lpc < max; lpc++) {
	switch (crm_name[lpc]) {
	case '-':
	crm_name[lpc] = '_';
	break;
	}
	}
	return crm_name;
	}

	const char *
	crm_meta_value(GHashTable * hash, const char *field)
	{
	char *key = NULL;
	const char *value = NULL;

	key = crm_meta_name(field);
	if (key) {
	value = g_hash_table_lookup(hash, key);
	free(key);
	}

	return value;
	}

	static struct option *
	crm_create_long_opts(struct crm_option *long_options)
	{
	struct option *long_opts = NULL;

	#ifdef HAVE_GETOPT_H
	int index = 0, lpc = 0;

	/*
	* A previous, possibly poor, choice of '?' as the short form of --help
	* means that getopt_long() returns '?' for both --help and for "unknown option"
	*
	* This dummy entry allows us to differentiate between the two in crm_get_option()
	* and exit with the correct error code
	*/
	long_opts = realloc_safe(long_opts, (index + 1) * sizeof(struct option));
	long_opts[index].name = "__dummmy__";
	long_opts[index].has_arg = 0;
	long_opts[index].flag = 0;
	long_opts[index].val = '_';
	index++;

	for (lpc = 0; long_options[lpc].name != NULL; lpc++) {
	if (long_options[lpc].name[0] == '-') {
	continue;
	}

	long_opts = realloc_safe(long_opts, (index + 1) * sizeof(struct option));
	/*fprintf(stderr, "Creating %d %s = %c\n", index,
	* long_options[lpc].name, long_options[lpc].val); */
	long_opts[index].name = long_options[lpc].name;
	long_opts[index].has_arg = long_options[lpc].has_arg;
	long_opts[index].flag = long_options[lpc].flag;
	long_opts[index].val = long_options[lpc].val;
	index++;
	}

	/* Now create the list terminator */
	long_opts = realloc_safe(long_opts, (index + 1) * sizeof(struct option));
	long_opts[index].name = NULL;
	long_opts[index].has_arg = 0;
	long_opts[index].flag = 0;
	long_opts[index].val = 0;
	#endif

	return long_opts;
	}

	void
	crm_set_options(const char short_options, const char app_usage, struct crm_option *long_options,
	const char *app_desc)
	{
	if (short_options) {
	crm_short_options = strdup(short_options);

	} else if (long_options) {
	int lpc = 0;
	int opt_string_len = 0;
	char *local_short_options = NULL;

	for (lpc = 0; long_options[lpc].name != NULL; lpc++) {
	if (long_options[lpc].val && long_options[lpc].val != '-' && long_options[lpc].val < UCHAR_MAX) {
	local_short_options = realloc_safe(local_short_options, opt_string_len + 4);
	local_short_options[opt_string_len++] = long_options[lpc].val;
	/* getopt(3) says: Two colons mean an option takes an optional arg; */
	if (long_options[lpc].has_arg == optional_argument) {
	local_short_options[opt_string_len++] = ':';
	}
	if (long_options[lpc].has_arg >= required_argument) {
	local_short_options[opt_string_len++] = ':';
	}
	local_short_options[opt_string_len] = 0;
	}
	}
	crm_short_options = local_short_options;
	crm_trace("Generated short option string: '%s'", local_short_options);
	}

	if (long_options) {
	crm_long_options = long_options;
	}
	if (app_desc) {
	crm_app_description = app_desc;
	}
	if (app_usage) {
	crm_app_usage = app_usage;
	}
	}

	int
	crm_get_option(int argc, char *argv, int index)
	{
	return crm_get_option_long(argc, argv, index, NULL);
	}

	int
	crm_get_option_long(int argc, char *argv, int index, const char **longname)
	{
	#ifdef HAVE_GETOPT_H
	static struct option *long_opts = NULL;

	if (long_opts == NULL && crm_long_options) {
	long_opts = crm_create_long_opts(crm_long_options);
	}

	*index = 0;
	if (long_opts) {
	int flag = getopt_long(argc, argv, crm_short_options, long_opts, index);

	switch (flag) {
	case 0:
	if (long_opts[*index].val) {
	return long_opts[*index].val;
	} else if (longname) {
	longname = long_opts[index].name;
	} else {
	crm_notice("Unhandled option --%s", long_opts[*index].name);
	return flag;
	}
	case -1: /* End of option processing */
	break;
	case ':':
	crm_trace("Missing argument");
	crm_help('?', 1);
	break;
	case '?':
	crm_help('?', *index ? 0 : 1);
	break;
	}
	return flag;
	}
	#endif

	if (crm_short_options) {
	return getopt(argc, argv, crm_short_options);
	}

	return -1;
	}

	int
	crm_help(char cmd, int exit_code)
	{
	int i = 0;
	FILE *stream = (exit_code ? stderr : stdout);

	if (cmd == 'v' \|\| cmd == '$') {
	fprintf(stream, "Pacemaker %s\n", PACEMAKER_VERSION);
	fprintf(stream, "Written by Andrew Beekhof\n");
	goto out;
	}

	if (cmd == '!') {
	fprintf(stream, "Pacemaker %s (Build: %s): %s\n", PACEMAKER_VERSION, BUILD_VERSION, CRM_FEATURES);
	goto out;
	}

	fprintf(stream, "%s - %s\n", crm_system_name, crm_app_description);

	if (crm_app_usage) {
	fprintf(stream, "Usage: %s %s\n", crm_system_name, crm_app_usage);
	}

	if (crm_long_options) {
	fprintf(stream, "Options:\n");
	for (i = 0; crm_long_options[i].name != NULL; i++) {
	if (crm_long_options[i].flags & pcmk_option_hidden) {

	} else if (crm_long_options[i].flags & pcmk_option_paragraph) {
	fprintf(stream, "%s\n\n", crm_long_options[i].desc);

	} else if (crm_long_options[i].flags & pcmk_option_example) {
	fprintf(stream, "\t#%s\n\n", crm_long_options[i].desc);

	} else if (crm_long_options[i].val == '-' && crm_long_options[i].desc) {
	fprintf(stream, "%s\n", crm_long_options[i].desc);

	} else {
	/* is val printable as char ? */
	if (crm_long_options[i].val && crm_long_options[i].val <= UCHAR_MAX) {
	fprintf(stream, " -%c,", crm_long_options[i].val);
	} else {
	fputs(" ", stream);
	}
	fprintf(stream, " --%s%s\t%s\n", crm_long_options[i].name,
	crm_long_options[i].has_arg == optional_argument ? "[=value]" :
	crm_long_options[i].has_arg == required_argument ? "=value" : "",
	crm_long_options[i].desc ? crm_long_options[i].desc : "");
	}
	}

	} else if (crm_short_options) {
	fprintf(stream, "Usage: %s - %s\n", crm_system_name, crm_app_description);
	for (i = 0; crm_short_options[i] != 0; i++) {
	int has_arg = no_argument /* 0 */;

	if (crm_short_options[i + 1] == ':') {
	if (crm_short_options[i + 2] == ':')
	has_arg = optional_argument /* 2 */;
	else
	has_arg = required_argument /* 1 */;
	}

	fprintf(stream, " -%c %s\n", crm_short_options[i],
	has_arg == optional_argument ? "[value]" :
	has_arg == required_argument ? "{value}" : "");
	i += has_arg;
	}
	}

	fprintf(stream, "\nReport bugs to %s\n", PACKAGE_BUGREPORT);

	out:
	return crm_exit(exit_code);
	}

	void cib_ipc_servers_init(qb_ipcs_service_t **ipcs_ro,
	qb_ipcs_service_t **ipcs_rw,
	qb_ipcs_service_t **ipcs_shm,
	struct qb_ipcs_service_handlers *ro_cb,
	struct qb_ipcs_service_handlers *rw_cb)
	{
	*ipcs_ro = mainloop_add_ipc_server(cib_channel_ro, QB_IPC_NATIVE, ro_cb);
	*ipcs_rw = mainloop_add_ipc_server(cib_channel_rw, QB_IPC_NATIVE, rw_cb);
	*ipcs_shm = mainloop_add_ipc_server(cib_channel_shm, QB_IPC_SHM, rw_cb);

	if (ipcs_ro == NULL \|\| ipcs_rw == NULL \|\| *ipcs_shm == NULL) {
	crm_err("Failed to create cib servers: exiting and inhibiting respawn.");
	crm_warn("Verify pacemaker and pacemaker_remote are not both enabled.");
	crm_exit(DAEMON_RESPAWN_STOP);
	}
	}

	void cib_ipc_servers_destroy(qb_ipcs_service_t *ipcs_ro,
	qb_ipcs_service_t *ipcs_rw,
	qb_ipcs_service_t *ipcs_shm)
	{
	qb_ipcs_destroy(ipcs_ro);
	qb_ipcs_destroy(ipcs_rw);
	qb_ipcs_destroy(ipcs_shm);
	}

	qb_ipcs_service_t *
	crmd_ipc_server_init(struct qb_ipcs_service_handlers *cb)
	{
	return mainloop_add_ipc_server(CRM_SYSTEM_CRMD, QB_IPC_NATIVE, cb);
	}

	void
	attrd_ipc_server_init(qb_ipcs_service_t *ipcs, struct qb_ipcs_service_handlers cb)
	{
	*ipcs = mainloop_add_ipc_server(T_ATTRD, QB_IPC_NATIVE, cb);

	if (*ipcs == NULL) {
	crm_err("Failed to create attrd servers: exiting and inhibiting respawn.");
	crm_warn("Verify pacemaker and pacemaker_remote are not both enabled.");
	crm_exit(DAEMON_RESPAWN_STOP);
	}
	}

	void
	stonith_ipc_server_init(qb_ipcs_service_t *ipcs, struct qb_ipcs_service_handlers cb)
	{
	*ipcs = mainloop_add_ipc_server("stonith-ng", QB_IPC_NATIVE, cb);

	if (*ipcs == NULL) {
	crm_err("Failed to create stonith-ng servers: exiting and inhibiting respawn.");
	crm_warn("Verify pacemaker and pacemaker_remote are not both enabled.");
	crm_exit(DAEMON_RESPAWN_STOP);
	}
	}

	int
	attrd_update_delegate(crm_ipc_t * ipc, char command, const char host, const char name,
	const char value, const char section, const char set, const char dampen,
	const char *user_name, int options)
	{
	int rc = -ENOTCONN;
	int max = 5;
	const char *task = NULL;
	const char *name_as = NULL;
	const char *display_host = (host ? host : "localhost");
	const char display_command = NULL; / for commands without name/value */
	xmlNode *update = create_xml_node(NULL, __FUNCTION__);

	static gboolean connected = TRUE;
	static crm_ipc_t *local_ipc = NULL;
	static enum crm_ipc_flags flags = crm_ipc_flags_none;

	if (ipc == NULL && local_ipc == NULL) {
	local_ipc = crm_ipc_new(T_ATTRD, 0);
	flags \|= crm_ipc_client_response;
	connected = FALSE;
	}

	if (ipc == NULL) {
	ipc = local_ipc;
	}

	/* remap common aliases */
	if (safe_str_eq(section, "reboot")) {
	section = XML_CIB_TAG_STATUS;

	} else if (safe_str_eq(section, "forever")) {
	section = XML_CIB_TAG_NODES;
	}

	crm_xml_add(update, F_TYPE, T_ATTRD);
	crm_xml_add(update, F_ORIG, crm_system_name?crm_system_name:"unknown");

	if (name == NULL && command == 'U') {
	command = 'R';
	}

	switch (command) {
	case 'u':
	task = ATTRD_OP_UPDATE;
	name_as = F_ATTRD_REGEX;
	break;
	case 'D':
	case 'U':
	case 'v':
	task = ATTRD_OP_UPDATE;
	name_as = F_ATTRD_ATTRIBUTE;
	break;
	case 'R':
	task = ATTRD_OP_REFRESH;
	display_command = "refresh";
	break;
	case 'B':
	task = ATTRD_OP_UPDATE_BOTH;
	name_as = F_ATTRD_ATTRIBUTE;
	break;
	case 'Y':
	task = ATTRD_OP_UPDATE_DELAY;
	name_as = F_ATTRD_ATTRIBUTE;
	break;
	case 'Q':
	task = ATTRD_OP_QUERY;
	name_as = F_ATTRD_ATTRIBUTE;
	break;
	case 'C':
	task = ATTRD_OP_PEER_REMOVE;
	display_command = "purge";
	break;
	}

	if (name_as != NULL) {
	if (name == NULL) {
	rc = -EINVAL;
	goto done;
	}
	crm_xml_add(update, name_as, name);
	}

	crm_xml_add(update, F_ATTRD_TASK, task);
	crm_xml_add(update, F_ATTRD_VALUE, value);
	crm_xml_add(update, F_ATTRD_DAMPEN, dampen);
	crm_xml_add(update, F_ATTRD_SECTION, section);
	crm_xml_add(update, F_ATTRD_HOST, host);
	crm_xml_add(update, F_ATTRD_SET, set);
	crm_xml_add_int(update, F_ATTRD_IS_REMOTE, is_set(options, attrd_opt_remote));
	crm_xml_add_int(update, F_ATTRD_IS_PRIVATE, is_set(options, attrd_opt_private));
	#if ENABLE_ACL
	if (user_name) {
	crm_xml_add(update, F_ATTRD_USER, user_name);
	}
	#endif

	while (max > 0) {
	if (connected == FALSE) {
	crm_info("Connecting to cluster... %d retries remaining", max);
	connected = crm_ipc_connect(ipc);
	}

	if (connected) {
	rc = crm_ipc_send(ipc, update, flags, 0, NULL);
	} else {
	crm_perror(LOG_INFO, "Connection to cluster attribute manager failed");
	}

	if (ipc != local_ipc) {
	break;

	} else if (rc > 0) {
	break;

	} else if (rc == -EAGAIN \|\| rc == -EALREADY) {
	sleep(5 - max);
	max--;

	} else {
	crm_ipc_close(ipc);
	connected = FALSE;
	sleep(5 - max);
	max--;
	}
	}

	done:
	free_xml(update);
	if (rc > 0) {
	rc = pcmk_ok;
	}

	if (display_command) {
	crm_debug("Asked attrd to %s %s: %s (%d)",
	display_command, display_host, pcmk_strerror(rc), rc);
	} else {
	crm_debug("Asked attrd to update %s=%s for %s: %s (%d)",
	name, value, display_host, pcmk_strerror(rc), rc);
	}
	return rc;
	}

	#define FAKE_TE_ID "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
	static void
	append_digest(lrmd_event_data_t * op, xmlNode * update, const char version, const char magic,
	int level)
	{
	/* this will enable us to later determine that the
	* resource's parameters have changed and we should force
	* a restart
	*/
	char *digest = NULL;
	xmlNode *args_xml = NULL;

	if (op->params == NULL) {
	return;
	}

	args_xml = create_xml_node(NULL, XML_TAG_PARAMS);
	g_hash_table_foreach(op->params, hash2field, args_xml);
	filter_action_parameters(args_xml, version);
	crm_summarize_versioned_params(args_xml, op->versioned_params);
	digest = calculate_operation_digest(args_xml, version);

	#if 0
	if (level < get_crm_log_level()
	&& op->interval == 0 && crm_str_eq(op->op_type, CRMD_ACTION_START, TRUE)) {
	char *digest_source = dump_xml_unformatted(args_xml);

	do_crm_log(level, "Calculated digest %s for %s (%s). Source: %s\n",
	digest, ID(update), magic, digest_source);
	free(digest_source);
	}
	#endif
	crm_xml_add(update, XML_LRM_ATTR_OP_DIGEST, digest);

	free_xml(args_xml);
	free(digest);
	}

	int
	rsc_op_expected_rc(lrmd_event_data_t * op)
	{
	int rc = 0;

	if (op && op->user_data) {
	int dummy = 0;
	char *uuid = NULL;

	decode_transition_key(op->user_data, &uuid, &dummy, &dummy, &rc);
	free(uuid);
	}
	return rc;
	}

	gboolean
	did_rsc_op_fail(lrmd_event_data_t * op, int target_rc)
	{
	switch (op->op_status) {
	case PCMK_LRM_OP_CANCELLED:
	case PCMK_LRM_OP_PENDING:
	return FALSE;
	break;

	case PCMK_LRM_OP_NOTSUPPORTED:
	case PCMK_LRM_OP_TIMEOUT:
	case PCMK_LRM_OP_ERROR:
	return TRUE;
	break;

	default:
	if (target_rc != op->rc) {
	return TRUE;
	}
	}

	return FALSE;
	}

	xmlNode *
	create_operation_update(xmlNode * parent, lrmd_event_data_t * op, const char * caller_version,
	int target_rc, const char * node, const char * origin, int level)
	{
	char *key = NULL;
	char *magic = NULL;
	char *op_id = NULL;
	char *op_id_additional = NULL;
	char *local_user_data = NULL;
	const char *exit_reason = NULL;

	xmlNode *xml_op = NULL;
	const char *task = NULL;
	gboolean dc_munges_migrate_ops = (compare_version(caller_version, "3.0.3") < 0);
	gboolean dc_needs_unique_ops = (compare_version(caller_version, "3.0.6") < 0);

	CRM_CHECK(op != NULL, return NULL);
	do_crm_log(level, "%s: Updating resource %s after %s op %s (interval=%d)",
	origin, op->rsc_id, op->op_type, services_lrm_status_str(op->op_status),
	op->interval);

	crm_trace("DC version: %s", caller_version);

	task = op->op_type;
	/* remap the task name under various scenarios
	* this makes life easier for the PE when trying determine the current state
	*/
	if (crm_str_eq(task, "reload", TRUE)) {
	if (op->op_status == PCMK_LRM_OP_DONE) {
	task = CRMD_ACTION_START;
	} else {
	task = CRMD_ACTION_STATUS;
	}

	} else if (dc_munges_migrate_ops && crm_str_eq(task, CRMD_ACTION_MIGRATE, TRUE)) {
	/* if the migrate_from fails it will have enough info to do the right thing */
	if (op->op_status == PCMK_LRM_OP_DONE) {
	task = CRMD_ACTION_STOP;
	} else {
	task = CRMD_ACTION_STATUS;
	}

	} else if (dc_munges_migrate_ops
	&& op->op_status == PCMK_LRM_OP_DONE
	&& crm_str_eq(task, CRMD_ACTION_MIGRATED, TRUE)) {
	task = CRMD_ACTION_START;
	}

	key = generate_op_key(op->rsc_id, task, op->interval);
	if (dc_needs_unique_ops && op->interval > 0) {
	op_id = strdup(key);

	} else if (crm_str_eq(task, CRMD_ACTION_NOTIFY, TRUE)) {
	const char *n_type = crm_meta_value(op->params, "notify_type");
	const char *n_task = crm_meta_value(op->params, "notify_operation");

	CRM_LOG_ASSERT(n_type != NULL);
	CRM_LOG_ASSERT(n_task != NULL);
	op_id = generate_notify_key(op->rsc_id, n_type, n_task);

	/* these are not yet allowed to fail */
	op->op_status = PCMK_LRM_OP_DONE;
	op->rc = 0;

	} else if (did_rsc_op_fail(op, target_rc)) {
	op_id = generate_op_key(op->rsc_id, "last_failure", 0);
	if (op->interval == 0) {
	/* Ensure 'last' gets updated too in case recording-pending="true" */
	op_id_additional = generate_op_key(op->rsc_id, "last", 0);
	}
	exit_reason = op->exit_reason;

	} else if (op->interval > 0) {
	op_id = strdup(key);

	} else {
	op_id = generate_op_key(op->rsc_id, "last", 0);
	}

	again:
	xml_op = find_entity(parent, XML_LRM_TAG_RSC_OP, op_id);
	if (xml_op == NULL) {
	xml_op = create_xml_node(parent, XML_LRM_TAG_RSC_OP);
	}

	if (op->user_data == NULL) {
	crm_debug("Generating fake transition key for:"
	" %s_%s_%d %d from %s",
	op->rsc_id, op->op_type, op->interval, op->call_id, origin);
	local_user_data = generate_transition_key(-1, op->call_id, target_rc, FAKE_TE_ID);
	op->user_data = local_user_data;
	}

	if(magic == NULL) {
	magic = generate_transition_magic(op->user_data, op->op_status, op->rc);
	}

	crm_xml_add(xml_op, XML_ATTR_ID, op_id);
	crm_xml_add(xml_op, XML_LRM_ATTR_TASK_KEY, key);
	crm_xml_add(xml_op, XML_LRM_ATTR_TASK, task);
	crm_xml_add(xml_op, XML_ATTR_ORIGIN, origin);
	crm_xml_add(xml_op, XML_ATTR_CRM_VERSION, caller_version);
	crm_xml_add(xml_op, XML_ATTR_TRANSITION_KEY, op->user_data);
	crm_xml_add(xml_op, XML_ATTR_TRANSITION_MAGIC, magic);
	crm_xml_add(xml_op, XML_LRM_ATTR_EXIT_REASON, exit_reason);
	crm_xml_add(xml_op, XML_LRM_ATTR_TARGET, node); /* For context during triage */

	crm_xml_add_int(xml_op, XML_LRM_ATTR_CALLID, op->call_id);
	crm_xml_add_int(xml_op, XML_LRM_ATTR_RC, op->rc);
	crm_xml_add_int(xml_op, XML_LRM_ATTR_OPSTATUS, op->op_status);
	crm_xml_add_int(xml_op, XML_LRM_ATTR_INTERVAL, op->interval);

	if (compare_version("2.1", caller_version) <= 0) {
	if (op->t_run \|\| op->t_rcchange \|\| op->exec_time \|\| op->queue_time) {
	crm_trace("Timing data (%s_%s_%d): last=%u change=%u exec=%u queue=%u",
	op->rsc_id, op->op_type, op->interval,
	op->t_run, op->t_rcchange, op->exec_time, op->queue_time);

	if (op->interval == 0) {
	/* The values are the same for non-recurring ops */
	crm_xml_add_int(xml_op, XML_RSC_OP_LAST_RUN, op->t_run);
	crm_xml_add_int(xml_op, XML_RSC_OP_LAST_CHANGE, op->t_run);

	} else if(op->t_rcchange) {
	/* last-run is not accurate for recurring ops */
	crm_xml_add_int(xml_op, XML_RSC_OP_LAST_CHANGE, op->t_rcchange);

	} else {
	/* ...but is better than nothing otherwise */
	crm_xml_add_int(xml_op, XML_RSC_OP_LAST_CHANGE, op->t_run);
	}

	crm_xml_add_int(xml_op, XML_RSC_OP_T_EXEC, op->exec_time);
	crm_xml_add_int(xml_op, XML_RSC_OP_T_QUEUE, op->queue_time);
	}
	}

	if (crm_str_eq(op->op_type, CRMD_ACTION_MIGRATE, TRUE)
	\|\| crm_str_eq(op->op_type, CRMD_ACTION_MIGRATED, TRUE)) {
	/*
	* Record migrate_source and migrate_target always for migrate ops.
	*/
	const char *name = XML_LRM_ATTR_MIGRATE_SOURCE;

	crm_xml_add(xml_op, name, crm_meta_value(op->params, name));

	name = XML_LRM_ATTR_MIGRATE_TARGET;
	crm_xml_add(xml_op, name, crm_meta_value(op->params, name));
	}

	append_digest(op, xml_op, caller_version, magic, LOG_DEBUG);

	if (op_id_additional) {
	free(op_id);
	op_id = op_id_additional;
	op_id_additional = NULL;
	goto again;
	}

	if (local_user_data) {
	free(local_user_data);
	op->user_data = NULL;
	}
	free(magic);
	free(op_id);
	free(key);
	return xml_op;
	}

	bool
	pcmk_acl_required(const char *user)
	{
	#if ENABLE_ACL
	if(user == NULL \|\| strlen(user) == 0) {
	crm_trace("no user set");
	return FALSE;

	} else if (strcmp(user, CRM_DAEMON_USER) == 0) {
	return FALSE;

	} else if (strcmp(user, "root") == 0) {
	return FALSE;
	}
	crm_trace("acls required for %s", user);
	return TRUE;
	#else
	crm_trace("acls not supported");
	return FALSE;
	#endif
	}

	#if ENABLE_ACL
	char *
	uid2username(uid_t uid)
	{
	struct passwd *pwent = getpwuid(uid);

	if (pwent == NULL) {
	crm_perror(LOG_ERR, "Cannot get password entry of uid: %d", uid);
	return NULL;

	} else {
	return strdup(pwent->pw_name);
	}
	}

	const char *
	crm_acl_get_set_user(xmlNode * request, const char field, const char peer_user)
	{
	/* field is only checked for backwards compatibility */
	static const char *effective_user = NULL;
	const char *requested_user = NULL;
	const char *user = NULL;

	if(effective_user == NULL) {
	effective_user = uid2username(geteuid());
	}

	requested_user = crm_element_value(request, XML_ACL_TAG_USER);
	if(requested_user == NULL) {
	requested_user = crm_element_value(request, field);
	}

	if (is_privileged(effective_user) == FALSE) {
	/* We're not running as a privileged user, set or overwrite any existing value for $XML_ACL_TAG_USER */
	user = effective_user;

	} else if(peer_user == NULL && requested_user == NULL) {
	/* No user known or requested, use 'effective_user' and make sure one is set for the request */
	user = effective_user;

	} else if(peer_user == NULL) {
	/* No user known, trusting 'requested_user' */
	user = requested_user;

	} else if (is_privileged(peer_user) == FALSE) {
	/* The peer is not a privileged user, set or overwrite any existing value for $XML_ACL_TAG_USER */
	user = peer_user;

	} else if (requested_user == NULL) {
	/* Even if we're privileged, make sure there is always a value set */
	user = peer_user;

	} else {
	/* Legal delegation to 'requested_user' */
	user = requested_user;
	}

	/* Yes, pointer comparision */
	if(user != crm_element_value(request, XML_ACL_TAG_USER)) {
	crm_xml_add(request, XML_ACL_TAG_USER, user);
	}

	if(field != NULL && user != crm_element_value(request, field)) {
	crm_xml_add(request, field, user);
	}

	return requested_user;
	}

	void
	determine_request_user(const char user, xmlNode request, const char *field)
	{
	/* Get our internal validation out of the way first */
	CRM_CHECK(user != NULL && request != NULL && field != NULL, return);

	/* If our peer is a privileged user, we might be doing something on behalf of someone else */
	if (is_privileged(user) == FALSE) {
	/* We're not a privileged user, set or overwrite any existing value for $field */
	crm_xml_replace(request, field, user);

	} else if (crm_element_value(request, field) == NULL) {
	/* Even if we're privileged, make sure there is always a value set */
	crm_xml_replace(request, field, user);

	/* } else { Legal delegation */
	}

	crm_trace("Processing msg as user '%s'", crm_element_value(request, field));
	}
	#endif

	void *
	find_library_function(void *handle, const char lib, const char *fn, gboolean fatal)
	{
	char *error;
	void *a_function;

	if (*handle == NULL) {
	*handle = dlopen(lib, RTLD_LAZY);
	}

	if (!(*handle)) {
	crm_err("%sCould not open %s: %s", fatal ? "Fatal: " : "", lib, dlerror());
	if (fatal) {
	crm_exit(DAEMON_RESPAWN_STOP);
	}
	return NULL;
	}

	a_function = dlsym(*handle, fn);
	if (a_function == NULL) {
	error = dlerror();
	crm_err("%sCould not find %s in %s: %s", fatal ? "Fatal: " : "", fn, lib, error);
	if (fatal) {
	crm_exit(DAEMON_RESPAWN_STOP);
	}
	}

	return a_function;
	}

	void *
	convert_const_pointer(const void *ptr)
	{
	/* Worst function ever */
	return (void *)ptr;
	}

	#ifdef HAVE_UUID_UUID_H
	# include <uuid/uuid.h>
	#endif

	char *
	crm_generate_uuid(void)
	{
	unsigned char uuid[16];
	char buffer = malloc(37); / Including NUL byte */

	uuid_generate(uuid);
	uuid_unparse(uuid, buffer);
	return buffer;
	}

	#include <md5.h>

	char *
	crm_md5sum(const char *buffer)
	{
	int lpc = 0, len = 0;
	char *digest = NULL;
	unsigned char raw_digest[MD5_DIGEST_SIZE];

	if (buffer == NULL) {
	buffer = "";
	}
	len = strlen(buffer);

	crm_trace("Beginning digest of %d bytes", len);
	digest = malloc(2 * MD5_DIGEST_SIZE + 1);
	if(digest) {
	md5_buffer(buffer, len, raw_digest);
	for (lpc = 0; lpc < MD5_DIGEST_SIZE; lpc++) {
	sprintf(digest + (2 * lpc), "%02x", raw_digest[lpc]);
	}
	digest[(2 * MD5_DIGEST_SIZE)] = 0;
	crm_trace("Digest %s.", digest);

	} else {
	crm_err("Could not create digest");
	}
	return digest;
	}

	#ifdef HAVE_GNUTLS_GNUTLS_H
	void
	crm_gnutls_global_init(void)
	{
	signal(SIGPIPE, SIG_IGN);
	gnutls_global_init();
	}
	#endif

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