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	diff --git a/src/pacemaker.c b/src/pacemaker.c
	index 7ee14ee..d986747 100644
	--- a/src/pacemaker.c
	+++ b/src/pacemaker.c
	@@ -1,337 +1,329 @@
	/*
	* Copyright (C) 2011 Jiaju Zhang <jjzhang@suse.de>
	* Copyright (C) 2013-2014 Philipp Marek <philipp.marek@linbit.com>
	*
	* 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 <stdio.h>
	#include <stdlib.h>
	#include <errno.h>
	#include <inttypes.h>
	#include <sys/types.h>
	#include <sys/wait.h>
	#include "log.h"
	#include "pacemaker.h"
	#include "inline-fn.h"


	enum atomic_ticket_supported {
	YES=0,
	NO,
	FILENOTFOUND, /* Ie. UNKNOWN */
	UNKNOWN = FILENOTFOUND,
	};
	/* http://thedailywtf.com/Articles/What_Is_Truth_0x3f_.aspx */


	enum atomic_ticket_supported atomicity = UNKNOWN;



	#define COMMAND_MAX 1024


	/** Determines whether the installed crm_ticket can do atomic ticket grants,
	* _including_ multiple attribute changes.
	*
	* See
	* https://bugzilla.novell.com/show_bug.cgi?id=855099
	*
	* Run "crm_ticket" without "--force";
	* - the old version asks for "Y/N" via STDIN, and returns 0
	* when reading "no";
	* - the new version just reports an error without asking.
	*/
	static void test_atomicity(void)
	{
	int rv;

	if (atomicity != UNKNOWN)
	return;

	rv = system("echo n \| crm_ticket -g -t any-ticket-name > /dev/null 2> /dev/null");
	if (rv == -1) {
	log_error("Cannot run \"crm_ticket\"!");
	/* BIG problem. Abort. */
	exit(1);
	}

	if (WIFSIGNALED(rv)) {
	log_error("\"crm_ticket\" terminated by a signal!");
	/* Problem. Abort. */
	exit(1);
	}

	switch (WEXITSTATUS(rv)) {
	case 0:
	atomicity = NO;
	log_info("Old \"crm_ticket\" found, using non-atomic ticket updates.");
	break;

	case 1:
	atomicity = YES;
	log_info("New \"crm_ticket\" found, using atomic ticket updates.");
	break;

	default:
	log_error("Unexpected return value from \"crm_ticket\" (%d), "
	"falling back to non-atomic ticket updates.",
	rv);
	atomicity = NO;
	}

	assert(atomicity == YES \|\| atomicity == NO);
	}


	const char * interpret_rv(int rv)
	{
	static char text[64];
	int p;


	if (rv == 0)
	return "0";

	p = sprintf(text, "rv %d", WEXITSTATUS(rv));

	if (WIFSIGNALED(rv))
	sprintf(text + p, " signal %d", WTERMSIG(rv));

	return text;
	}


	static int pcmk_write_ticket_atomic(struct ticket_config *tk, int grant)
	{
	char cmd[COMMAND_MAX];
	int rv;


	/* The values are appended to "-v", so that NO_ONE
	* (which is -1) isn't seen as another option. */
	snprintf(cmd, COMMAND_MAX,
	"crm_ticket -t '%s' "
	"%s --force "
	"-S owner -v%" PRIi32 " "
	"-S expires -v%" PRIi64 " "
	"-S term -v%" PRIi64,
	tk->name,
	(grant > 0 ? "-g" :
	grant < 0 ? "-r" :
	""),
	(int32_t)get_node_id(tk->leader),
	(int64_t)tk->term_expires,
	(int64_t)tk->current_term);

	rv = system(cmd);
	log_info("command: '%s' was executed", cmd);
	if (rv != 0)
	log_error("error: \"%s\" failed, %s", cmd, interpret_rv(rv));

	return rv;
	}


	static int pcmk_store_ticket_nonatomic(struct ticket_config *tk);

	static int pcmk_grant_ticket(struct ticket_config *tk)
	{
	char cmd[COMMAND_MAX];
	int rv;


	test_atomicity();
	if (atomicity == YES)
	return pcmk_write_ticket_atomic(tk, +1);


	rv = pcmk_store_ticket_nonatomic(tk);
	if (rv)
	return rv;

	snprintf(cmd, COMMAND_MAX, "crm_ticket -t %s -g --force",
	tk->name);
	log_info("command: '%s' was executed", cmd);
	rv = system(cmd);
	if (rv != 0)
	log_error("error: \"%s\" failed, %s", cmd, interpret_rv(rv));
	return rv;
	}


	static int pcmk_revoke_ticket(struct ticket_config *tk)
	{
	char cmd[COMMAND_MAX];
	int rv;


	test_atomicity();
	if (atomicity == YES)
	return pcmk_write_ticket_atomic(tk, -1);


	rv = pcmk_store_ticket_nonatomic(tk);
	if (rv)
	return rv;

	snprintf(cmd, COMMAND_MAX, "crm_ticket -t %s -r --force",
	tk->name);
	log_info("command: '%s' was executed", cmd);
	rv = system(cmd);
	if (rv != 0)
	log_error("error: \"%s\" failed, %s", cmd, interpret_rv(rv));
	return rv;
	}


	static int crm_ticket_set(const struct ticket_config tk, const char attr, int64_t val)
	{
	char cmd[COMMAND_MAX];
	int i, rv;


	snprintf(cmd, COMMAND_MAX,
	"crm_ticket -t '%s' -S '%s' -v %" PRIi64,
	tk->name, attr, val);
	/* If there are errors, there's not much we can do but retry ... */
	for (i=0; i<3 &&
	(rv = system(cmd));
	i++) ;

	log_debug("'%s' gave result %s", cmd, interpret_rv(rv));

	return rv;
	}


	static int pcmk_store_ticket_nonatomic(struct ticket_config *tk)
	{
	int rv;

	/* Always try to store each attribute, even if there's an error
	* for one of them. */
	rv = crm_ticket_set(tk, "owner", (int32_t)get_node_id(tk->leader));
	rv = crm_ticket_set(tk, "expires", tk->term_expires) \|\| rv;
	rv = crm_ticket_set(tk, "term", tk->current_term) \|\| rv;

	if (rv)
	log_error("setting crm_ticket attributes failed; %s",
	interpret_rv(rv));
	else
	log_info("setting crm_ticket attributes successful");

	return rv;
	}


	static int crm_ticket_get(struct ticket_config *tk,
	const char attr, int64_t data)
	{
	char cmd[COMMAND_MAX];
	char line[256];
	int rv;
	int64_t v;
	FILE *p;


	*data = -1;
	v = 0;
	snprintf(cmd, COMMAND_MAX,
	"crm_ticket -t '%s' -G '%s' --quiet",
	tk->name, attr);

	p = popen(cmd, "r");
	if (p == NULL) {
	rv = errno;
	log_error("popen error %d (%s) for \"%s\"",
	rv, strerror(rv), cmd);
	return rv \|\| -EINVAL;
	}
	if (fgets(line, sizeof(line) - 1, p) == NULL) {
	rv = ENODATA;
	goto out;
	}

	rv = EINVAL;
	if (!strncmp(line, "false", 5)) {
	v = 0;
	rv = 0;
	} else if (!strncmp(line, "true", 4)) {
	v = 1;
	rv = 0;
	} else if (sscanf(line, "%" PRIi64, &v) == 1) {
	rv = 0;
	}

	*data = v;

	out:
	rv = pclose(p);
	log_debug("command \"%s\" returned %s, value %" PRIi64, cmd, interpret_rv(rv), v);
	return rv;
	}


	static int pcmk_load_ticket(struct ticket_config *tk)
	{
	int rv;
	int64_t v;


	/* This here gets run during startup; testing that here means that
	* normal operation won't be interrupted with that test. */
	test_atomicity();


	rv = crm_ticket_get(tk, "expires", &v);
	if (!rv) {
	tk->term_expires = v;
	}

	rv = crm_ticket_get(tk, "term", &v);
	if (!rv) {
	tk->current_term = v;
	}

	rv = crm_ticket_get(tk, "owner", &v);
	if (!rv) {
	/* No check, node could have been deconfigured. */
	find_site_by_id(v, &tk->leader);
	}

	rv = crm_ticket_get(tk, "granted", &v);
	if (!rv) {
	tk->is_granted = v;
	}

	- if (disown_if_expired(tk))
	- pcmk_revoke_ticket(tk);
	-
	-// tk->proposal_acknowledges = local->bitmask;
	-
	- /* We load only when the state is completely unknown. */
	- tk->state = ST_INIT;
	-
	return rv;
	}


	struct ticket_handler pcmk_handler = {
	.grant_ticket = pcmk_grant_ticket,
	.revoke_ticket = pcmk_revoke_ticket,
	.load_ticket = pcmk_load_ticket,
	};
	diff --git a/src/ticket.c b/src/ticket.c
	index 903a04e..61bf2af 100644
	--- a/src/ticket.c
	+++ b/src/ticket.c
	@@ -1,674 +1,683 @@
	/*
	* Copyright (C) 2011 Jiaju Zhang <jjzhang@suse.de>
	* Copyright (C) 2013-2014 Philipp Marek <philipp.marek@linbit.com>
	*
	* 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 <stdlib.h>
	#include <string.h>
	#include <errno.h>
	#include <arpa/inet.h>
	#include <inttypes.h>
	#include <stdio.h>
	#include <assert.h>
	#include <time.h>
	#include "ticket.h"
	#include "config.h"
	#include "pacemaker.h"
	#include "inline-fn.h"
	#include "log.h"
	#include "booth.h"
	#include "raft.h"
	#include "handler.h"

	#define TK_LINE 256


	/* Untrusted input, must fit (incl. \0) in a buffer of max chars. */
	int check_max_len_valid(const char *s, int max)
	{
	int i;
	for(i=0; i<max; i++)
	if (s[i] == 0)
	return 1;
	return 0;
	}

	int find_ticket_by_name(const char ticket, struct ticket_config *found)
	{
	int i;

	if (found)
	*found = NULL;

	for (i = 0; i < booth_conf->ticket_count; i++) {
	if (!strcmp(booth_conf->ticket[i].name, ticket)) {
	if (found)
	*found = booth_conf->ticket + i;
	return 1;
	}
	}

	return 0;
	}


	int check_ticket(char ticket, struct ticket_config *found)
	{
	if (found)
	*found = NULL;
	if (!booth_conf)
	return 0;

	if (!check_max_len_valid(ticket, sizeof(booth_conf->ticket[0].name)))
	return 0;
	return find_ticket_by_name(ticket, found);
	}

	int check_site(char site, int is_local)
	{
	struct booth_site *node;

	if (!check_max_len_valid(site, sizeof(node->addr_string)))
	return 0;

	if (find_site_by_name(site, &node, 0)) {
	*is_local = node->local;
	return 1;
	}

	return 0;
	}


	#if 0
	/** Find out what others think about this ticket.
	*
	* If we're a SITE, we can ask (and have to tell) Pacemaker.
	* An ARBITRATOR can only ask others. */
	static int ticket_send_catchup(struct ticket_config *tk)
	{
	int i, rv = 0;
	struct booth_site *site;
	struct boothc_ticket_msg msg;

	foreach_node(i, site) {
	if (!site->local) {
	init_ticket_msg(&msg, CMD_CATCHUP, RLT_SUCCESS, tk);

	log_debug("attempting catchup from %s", site->addr_string);

	rv = booth_udp_send(site, &msg, sizeof(msg));
	}
	}

	ticket_activate_timeout(tk);

	return rv;
	}
	#endif


	int ticket_write(struct ticket_config *tk)
	{
	if (local->type != SITE)
	return -EINVAL;

	disown_if_expired(tk);

	if (tk->leader == local) {
	pcmk_handler.grant_ticket(tk);
	} else {
	pcmk_handler.revoke_ticket(tk);
	}

	return 0;
	}


	/* Ask an external program whether getting the ticket
	* makes sense.
	* Eg. if the services have a failcount of INFINITY,
	* we can't serve here anyway. */
	int get_ticket_locally_if_allowed(struct ticket_config *tk)
	{
	int rv;

	if (!tk->ext_verifier)
	goto get_it;

	rv = run_handler(tk, tk->ext_verifier, 1);
	if (rv) {
	log_error("May not acquire ticket.");

	/* Give it to somebody else.
	* Just send a commit message, as the
	* others couldn't help anyway. */
	if (leader_and_valid(tk)) {
	disown_ticket(tk);
	#if 0
	tk->proposed_owner = NULL;

	/* Just go one further - others may easily override. */
	tk->new_ballot++;

	ticket_broadcast_proposed_state(tk, OP_COMMITTED);
	tk->state = ST_STABLE;
	#endif
	ticket_broadcast(tk, OP_VOTE_FOR, RLT_SUCCESS);
	}

	return rv;
	} else {
	log_info("May get/keep ticket.");
	}

	get_it:
	if (leader_and_valid(tk)) {
	return send_heartbeat(tk);
	} else {
	/* Ticket should now become active locally, wasn't before. */
	rv = new_election(tk, local, 1);
	return rv;
	}
	}


	/** Try to get the ticket for the local site.
	* */
	int do_grant_ticket(struct ticket_config *tk)
	{
	int rv;

	if (tk->leader == local)
	return RLT_SUCCESS;
	if (is_owned(tk))
	return RLT_OVERGRANT;

	rv = get_ticket_locally_if_allowed(tk);
	return rv;
	}


	/** Ticket revoke.
	* Only to be started from the leader. */
	int do_revoke_ticket(struct ticket_config *tk)
	{
	log_info("revoke ticket %s", tk->name);

	disown_ticket(tk);
	tk->voted_for = no_leader;
	ticket_write(tk); // only when majority wants that? or, if tk->leader was == local, in every case, because the ticket shouldn't be here anymore?
	/* 1) lose ticket
	* 2) if majority is available, "none" gets it
	* 3) if majority not available, they might have voted for somebody else in the meantime anyway
	*/

	tk->state = ST_FOLLOWER;
	/* Start a new vote round, with a new term number, to let
	* everybody know that the ticket got revoked */
	tk->current_term++;
	return ticket_broadcast(tk, OP_REQ_VOTE, RLT_SUCCESS);
	}


	int list_ticket(char *pdata, unsigned int len)
	{
	struct ticket_config *tk;
	char timeout_str[64];
	char data, cp;
	int i, alloc;

	*pdata = NULL;
	*len = 0;

	alloc = 256 +
	booth_conf->ticket_count * (BOOTH_NAME_LEN * 2 + 128);
	data = malloc(alloc);
	if (!data)
	return -ENOMEM;

	cp = data;
	foreach_ticket(i, tk) {
	if (tk->term_expires != 0)
	strftime(timeout_str, sizeof(timeout_str), "%F %T",
	localtime(&tk->term_expires));
	else
	strcpy(timeout_str, "INF");


	cp += sprintf(cp,
	"ticket: %s, leader: %s, expires: %s, commit: %d\n",
	tk->name,
	ticket_leader_string(tk),
	timeout_str,
	tk->commit_index);

	*len = cp - data;
	assert(*len < alloc);
	}

	*pdata = data;

	return 0;
	}

	+void reset_ticket(struct ticket_config *tk)
	+{
	+ disown_ticket(tk);
	+ tk->current_term = 0;
	+ tk->commit_index = 0;
	+ tk->state = ST_INIT;
	+}
	+

	int setup_ticket(void)
	{
	struct ticket_config *tk;
	int i;

	foreach_ticket(i, tk) {
	- tk->leader = NULL;
	- tk->term_expires = 0;
	- tk->state = ST_INIT;
	-
	- // abort_proposal(tk);
	+ reset_ticket(tk);

	if (local->type == SITE) {
	pcmk_handler.load_ticket(tk);
	+ if (time(NULL) >= tk->term_expires) {
	+ reset_ticket(tk);
	+ ticket_write(tk);
	+ }
	}

	+
	/* we'll start election if the ticket seems to be
	* uptodate
	*/
	if (tk->is_granted && tk->leader == local) {
	tk->state = ST_FOLLOWER;
	} else {
	/* otherwise, query status */
	ticket_broadcast(tk, OP_STATUS, RLT_SUCCESS);
	}
	}

	return 0;
	}


	int ticket_answer_list(int fd, struct boothc_ticket_msg *msg)
	{
	char *data;
	int olen, rv;
	struct boothc_header hdr;

	rv = list_ticket(&data, &olen);
	if (rv < 0)
	return rv;

	init_header(&hdr, CMR_LIST, RLT_SUCCESS, sizeof(hdr) + olen);

	return send_header_plus(fd, &hdr, data, olen);
	}


	int ticket_answer_grant(int fd, struct boothc_ticket_msg *msg)
	{
	int rv;
	struct ticket_config *tk;


	if (!check_ticket(msg->ticket.id, &tk)) {
	log_error("Client asked to grant unknown ticket");
	rv = RLT_INVALID_ARG;
	goto reply;
	}

	if (is_owned(tk)) {
	log_error("client wants to get an (already granted!) ticket \"%s\"",
	msg->ticket.id);
	rv = RLT_OVERGRANT;
	goto reply;
	}

	rv = do_grant_ticket(tk);

	reply:
	init_header(&msg->header, CMR_GRANT, rv ?: RLT_ASYNC, sizeof(*msg));
	return send_ticket_msg(fd, msg);
	}


	int ticket_answer_revoke(int fd, struct boothc_ticket_msg *msg)
	{
	int rv;
	struct ticket_config *tk;

	if (!check_ticket(msg->ticket.id, &tk)) {
	log_error("Client wants to revoke an unknown ticket %s",
	msg->ticket.id);
	rv = RLT_INVALID_ARG;
	goto reply;
	}

	if (!is_owned(tk)) {
	log_info("client wants to revoke a free ticket \"%s\"",
	msg->ticket.id);
	/* Return a different result code? */
	rv = RLT_SUCCESS;
	goto reply;
	}

	if (tk->leader != local) {
	log_info("we do not own the ticket \"%s\", "
	"redirect to leader %s",
	msg->ticket.id, ticket_leader_string(tk));
	/* Return a different result code? */
	rv = RLT_REDIRECT;
	goto reply;
	}

	rv = do_revoke_ticket(tk);
	if (rv == 0)
	rv = RLT_ASYNC;

	reply:
	init_ticket_msg(msg, CMR_REVOKE, rv, tk);
	return send_ticket_msg(fd, msg);
	}


	int ticket_broadcast(struct ticket_config *tk, cmd_request_t cmd, cmd_result_t res)
	{
	struct boothc_ticket_msg msg;

	init_ticket_msg(&msg, cmd, res, tk);
	log_debug("broadcasting '%s' for ticket \"%s\" (term=%d, valid=%d)",
	state_to_string(cmd), tk->name,
	ntohl(msg.ticket.term),
	ntohl(msg.ticket.term_valid_for));

	return transport()->broadcast(&msg, sizeof(msg));
	}


	static void ticket_cron(struct ticket_config *tk)
	{
	time_t now;
	int rv;
	int vote_cnt;
	struct booth_site *new_leader;

	now = time(NULL);


	R(tk);
	/* Has an owner, has an expiry date, and expiry date in the past?
	* Losing the ticket must happen in _every_ state. */
	if (tk->term_expires &&
	is_owned(tk) &&
	now >= tk->term_expires) {
	log_info("LOST ticket: \"%s\" no longer at %s",
	tk->name,
	ticket_leader_string(tk));

	/* Couldn't renew in time - ticket lost. */
	disown_ticket(tk);

	/* New vote round; §5.2 */
	if (local->type == SITE) {
	new_election(tk, NULL, 1);
	}

	ticket_write(tk);

	/* May not try to re-acquire now, need to find out
	* what others think. */
	return;
	}

	R(tk);

	switch(tk->state) {
	case ST_INIT:
	/* init state, nothing to do */
	break;

	case ST_FOLLOWER:
	/* in case we got restarted and this ticket belongs to
	* us */
	if (tk->is_granted && tk->leader == local) {
	get_ticket_locally_if_allowed(tk);
	}
	break;

	case ST_CANDIDATE:
	/* §5.2 */
	/* not everybody answered, but if we have majority... */
	new_leader = majority_votes(tk);
	if (new_leader) {
	leader_elected(tk, new_leader);
	set_ticket_wakeup(tk);
	} else if (now > tk->election_end) {
	/* This is previous election timed out */
	new_election(tk, NULL, 0);
	}
	break;

	case ST_LEADER:
	/* we get here after we broadcasted a heartbeat;
	* by this time all sites should've acked the heartbeat
	*/
	/* if (tk->hb_sent_at + tk->timeout <= now) { */
	vote_cnt = count_bits(tk->hb_received) - 1;
	if ((vote_cnt+1) < booth_conf->site_count) {
	if (!majority_of_bits(tk, tk->hb_received)) {
	tk->retry_number ++;
	if (!vote_cnt) {
	log_warn("no answers to heartbeat for ticket %s on try #%d, "
	"we are most probably alone!",
	tk->name,
	tk->retry_number);
	} else {
	log_warn("not enough answers to heartbeat for ticket %s on try #%d: "
	"only got %d answers (mask 0x%" PRIx64 ")!",
	tk->name,
	tk->retry_number,
	vote_cnt,
	tk->hb_received);
	}
	/* Don't give up, though - there's still some time until leadership is lost. */
	}
	}

	rv = run_handler(tk, tk->ext_verifier, 1);
	if (rv) {
	tk->state = ST_FOLLOWER;
	disown_ticket(tk);
	// resp. no owner anymore, new takers?
	ticket_broadcast(tk, OP_REQ_VOTE, RLT_SUCCESS);
	ticket_write(tk);
	} else {
	send_heartbeat(tk);
	ticket_activate_timeout(tk);
	}
	break;

	default:
	break;
	}
	R(tk);
	}


	void process_tickets(void)
	{
	struct ticket_config *tk;
	int i;
	struct timeval now;
	float sec_until;

	gettimeofday(&now, NULL);

	foreach_ticket(i, tk) {
	sec_until = timeval_to_float(tk->next_cron) - timeval_to_float(now);
	if (0)
	log_debug("ticket %s next cron %" PRIx64 ".%03d, "
	"now %" PRIx64 "%03d, in %f",
	tk->name,
	(uint64_t)tk->next_cron.tv_sec, timeval_msec(tk->next_cron),
	(uint64_t)now.tv_sec, timeval_msec(now),
	sec_until);
	if (sec_until > 0.0)
	continue;

	log_debug("ticket cron: doing %s", tk->name);


	/* Set next value, handler may override.
	* This should already be handled via the state logic;
	* but to be on the safe side the renew repetition is
	* duplicated here, too. */
	set_ticket_wakeup(tk);

	ticket_cron(tk);
	}
	}



	void tickets_log_info(void)
	{
	struct ticket_config *tk;
	int i;

	foreach_ticket(i, tk) {
	log_info("Ticket %s: state '%s' "
	"commit index %d "
	"leader \"%s\" "
	"expires %-24.24s",
	tk->name,
	state_to_string(tk->state),
	tk->commit_index,
	ticket_leader_string(tk),
	ctime(&tk->term_expires));
	}
	}


	/* UDP message receiver. */
	int message_recv(struct boothc_ticket_msg *msg, int msglen)
	{
	uint32_t from;
	struct booth_site *source;
	struct ticket_config *tk;
	struct booth_site *leader;
	uint32_t leader_u;


	if (check_boothc_header(&msg->header, sizeof(*msg)) < 0 \|\|
	msglen != sizeof(*msg)) {
	log_error("message receive error");
	return -1;
	}

	from = ntohl(msg->header.from);
	if (!find_site_by_id(from, &source) \|\| !source) {
	log_error("unknown sender: %08x", from);
	return -1;
	}

	if (!check_ticket(msg->ticket.id, &tk)) {
	log_error("got invalid ticket name \"%s\" from %s",
	msg->ticket.id, source->addr_string);
	return -EINVAL;
	}


	leader_u = ntohl(msg->ticket.leader);
	if (!find_site_by_id(leader_u, &leader)) {
	log_error("Message with unknown owner %x received", leader_u);
	return -EINVAL;
	}


	return raft_answer(tk, source, leader, msg);
	}


	void set_ticket_wakeup(struct ticket_config *tk)
	{
	struct timeval tv, now;

	/* At least every hour, perhaps sooner. */
	ticket_next_cron_in(tk, 3600);

	switch (tk->state) {
	case ST_LEADER:
	assert(tk->leader == local);
	gettimeofday(&now, NULL);

	tv = now;
	tv.tv_sec = next_vote_starts_at(tk);

	/* If timestamp is in the past, look again in one second. */
	if (timeval_compare(tv, now) <= 0)
	tv.tv_sec = now.tv_sec + 1;

	ticket_next_cron_at(tk, tv);
	break;

	case ST_CANDIDATE:
	assert(tk->election_end);
	ticket_next_cron_at_coarse(tk, tk->election_end);
	break;

	case ST_INIT:
	case ST_FOLLOWER:
	/* If there is (or should be) some owner, check on it later on.
	* If no one is interested - don't care. */
	if (is_owned(tk) &&
	(local->type == SITE))
	ticket_next_cron_at_coarse(tk,
	tk->term_expires + tk->acquire_after);
	break;

	default:
	log_error("unknown ticket state: %d", tk->state);
	}
	}



	/* Given a state (in host byte order), return a human-readable (char*).
	* An array is used so that multiple states can be printed in a single printf(). */
	char *state_to_string(uint32_t state_ho)
	{
	union mu { cmd_request_t s; char c[5]; };
	static union mu cache[6] = { { 0 } }, *cur;
	static int current = 0;

	current ++;
	if (current >= sizeof(cache)/sizeof(cache[0]))
	current = 0;

	cur = cache + current;

	cur->s = htonl(state_ho);
	/* Shouldn't be necessary, union array is initialized with zeroes, and
	* these bytes never get written. */
	cur->c[4] = 0;
	return cur->c;
	}


	int send_reject(struct booth_site dest, struct ticket_config tk, cmd_result_t code)
	{
	struct boothc_ticket_msg msg;


	init_ticket_msg(&msg, OP_REJECTED, code, tk);
	return booth_udp_send(dest, &msg, sizeof(msg));
	}
	diff --git a/src/ticket.h b/src/ticket.h
	index 6d128f0..64c32ec 100644
	--- a/src/ticket.h
	+++ b/src/ticket.h
	@@ -1,102 +1,103 @@
	/*
	* Copyright (C) 2011 Jiaju Zhang <jjzhang@suse.de>
	* Copyright (C) 2013-2014 Philipp Marek <philipp.marek@linbit.com>
	*
	* 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
	*/

	#ifndef _TICKET_H
	#define _TICKET_H

	#include <time.h>
	#include <sys/time.h>
	#include <math.h>

	#include "config.h"

	#define DEFAULT_TICKET_EXPIRY 600
	#define DEFAULT_TICKET_TIMEOUT 5
	#define DEFAULT_RETRIES 10


	#define foreach_ticket(i_,t_) for(i=0; (t_=booth_conf->ticket+i, i<booth_conf->ticket_count); i++)
	#define foreach_node(i_,n_) for(i=0; (n_=booth_conf->site+i, i<booth_conf->site_count); i++)


	int check_ticket(char ticket, struct ticket_config *tc);
	int check_site(char site, int local);
	int do_grant_ticket(struct ticket_config *ticket);
	int revoke_ticket(struct ticket_config *ticket);
	int list_ticket(char *pdata, unsigned int len);

	int message_recv(struct boothc_ticket_msg *msg, int msglen);
	+void reset_ticket(struct ticket_config *tk);
	int setup_ticket(void);
	int check_max_len_valid(const char *s, int max);

	int do_grant_ticket(struct ticket_config *tk);
	int do_revoke_ticket(struct ticket_config *tk);

	int find_ticket_by_name(const char ticket, struct ticket_config *found);

	void set_ticket_wakeup(struct ticket_config *tk);

	int get_ticket_locally_if_allowed(struct ticket_config *tk);

	int ticket_answer_list(int fd, struct boothc_ticket_msg *msg);
	int ticket_answer_grant(int fd, struct boothc_ticket_msg *msg);
	int ticket_answer_revoke(int fd, struct boothc_ticket_msg *msg);

	int ticket_broadcast_proposed_state(struct ticket_config *tk, cmd_request_t state);

	int ticket_write(struct ticket_config *tk);

	void process_tickets(void);
	void tickets_log_info(void);
	char *state_to_string(uint32_t state_ho);
	int send_reject(struct booth_site dest, struct ticket_config tk, cmd_result_t code);
	int ticket_broadcast(struct ticket_config *tk, cmd_request_t cmd, cmd_result_t res);


	static inline void ticket_next_cron_at(struct ticket_config *tk, struct timeval when)
	{
	tk->next_cron = when;
	}

	static inline void ticket_next_cron_at_coarse(struct ticket_config *tk, time_t when)
	{
	tk->next_cron.tv_sec = when;
	tk->next_cron.tv_usec = 0;
	}

	static inline void ticket_next_cron_in(struct ticket_config *tk, float seconds)
	{
	struct timeval tv;

	gettimeofday(&tv, NULL);
	tv.tv_sec += trunc(seconds);
	tv.tv_usec += (seconds - trunc(seconds)) * 1e6;

	ticket_next_cron_at(tk, tv);
	}


	static inline void ticket_activate_timeout(struct ticket_config *tk)
	{
	/* TODO: increase timeout when no answers */
	ticket_next_cron_in(tk, tk->timeout);
	}


	#endif /* _TICKET_H */

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