No OneTemporary
Actions

Size

59 KB

Referenced Files

None

Subscribers

None

View Options

	diff --git a/src/attr.c b/src/attr.c
	index 741b74d..8a64246 100644
	--- a/src/attr.c
	+++ b/src/attr.c
	@@ -1,461 +1,462 @@
	/*
	* Copyright (C) 2015 Dejan Muhamedagic <dejan@hello-penguin.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 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 program; if not, write to the Free Software Foundation, Inc.,
	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	*/

	#include <stdio.h>
	#include "attr.h"
	#include "ticket.h"
	#include "pacemaker.h"

	void print_geostore_usage(void)
	{
	printf(
	"Usage:\n"
	" geostore {list\|set\|get\|delete} [-t ticket] [options] attr [value]\n"
	"\n"
	" list: List all attributes\n"
	" set: Set attribute to a value\n"
	" get: Get attribute's value\n"
	" delete: Delete attribute\n"
	"\n"
	" -t <ticket> Ticket where attribute resides\n"
	" (required, if more than one ticket is configured)\n"
	"\n"
	"Options:\n"
	" -c FILE Specify config file [default " BOOTH_DEFAULT_CONF "]\n"
	" Can be a path or just a name without \".conf\" suffix\n"
	" -s <site> Connect to a different site\n"
	" -h Print this help\n"
	"\n"
	"Examples:\n"
	"\n"
	" # geostore list -t ticket-A -s 10.121.8.183\n"
	" # geostore set -s 10.121.8.183 sr_status ACTIVE\n"
	" # geostore get -t ticket-A -s 10.121.8.183 sr_status\n"
	" # geostore delete -s 10.121.8.183 sr_status\n"
	"\n"
	"See the geostore(8) man page for more details.\n"
	);
	}

	/*
	* the client side
	*/

	/* cl has all the input parameters:
	* ticket, attr name, attr value
	*/

	int test_attr_reply(cmd_result_t reply_code, cmd_request_t cmd)
	{
	int rv = 0;
	const char *op_str = "";

	if (cmd == ATTR_SET)
	op_str = "set";
	else if (cmd == ATTR_GET)
	op_str = "get";
	else if (cmd == ATTR_LIST)
	op_str = "list";
	else if (cmd == ATTR_DEL)
	op_str = "delete";
	else {
	log_error("internal error reading reply result!");
	return -1;
	}

	switch (reply_code) {
	case RLT_ASYNC:
	log_info("%s command sent, result will be returned "
	"asynchronously.", op_str);
	rv = 0;
	break;

	case RLT_SYNC_SUCC:
	case RLT_SUCCESS:
	if (cmd == ATTR_SET)
	log_info("%s succeeded!", op_str);
	rv = 0;
	break;

	case RLT_SYNC_FAIL:
	log_info("%s failed!", op_str);
	rv = -1;
	break;

	case RLT_INVALID_ARG:
	log_error("ticket \"%s\" does not exist",
	cl.attr_msg.attr.tkt_id);
	rv = 1;
	break;

	case RLT_NO_SUCH_ATTR:
	log_error("attribute \"%s\" not set",
	cl.attr_msg.attr.name);
	rv = 1;
	break;

	case RLT_AUTH:
	log_error("authentication error");
	rv = -1;
	break;

	default:
	log_error("got an error code: %x", rv);
	rv = -1;
	}
	return rv;
	}

	/* read the server's reply
	* need to first get the header which contains the length of the
	* reply
	* return codes:
	* -2: header not received
	* -1: header received, but message too short
	* >=0: success
	*/
	static int read_server_reply(
	struct booth_transport const tpt, struct booth_site site,
	char *msg)
	{
	struct boothc_header *header;
	int rv;
	int len;

	header = (struct boothc_header *)msg;
	rv = tpt->recv(site, header, sizeof(*header));
	if (rv < 0) {
	return -2;
	}
	len = ntohl(header->length);
	rv = tpt->recv(site, msg+len, len-sizeof(*header));
	if (rv < 0) {
	return -1;
	}
	return rv;
	}

	int do_attr_command(cmd_request_t cmd)
	{
	struct booth_site *site = NULL;
	struct boothc_header *header;
	struct booth_transport const *tpt;
	int len, rv = -1;
	char *msg = NULL;

	if (!*cl.site)
	site = local;
	else {
	if (!find_site_by_name(cl.site, &site, 1)) {
	log_error("Site \"%s\" not configured.", cl.site);
	goto out_close;
	}
	}

	if (site->type == ARBITRATOR) {
	if (site == local) {
	log_error("We're just an arbitrator, no attributes here.");
	} else {
	log_error("%s is just an arbitrator, no attributes there.", cl.site);
	}
	goto out_close;
	}

	tpt = booth_transport + TCP;

	init_header(&cl.attr_msg.header, cmd, 0, cl.options, 0, 0,
	sizeof(cl.attr_msg));

	rv = tpt->open(site);
	if (rv < 0)
	goto out_close;

	rv = tpt->send(site, &cl.attr_msg, sendmsglen(&cl.attr_msg));
	if (rv < 0)
	goto out_close;

	msg = malloc(MAX_MSG_LEN);
	if (!msg) {
	log_error("out of memory");
	rv = -1;
	goto out_close;
	}

	rv = read_server_reply(tpt, site, msg);
	header = (struct boothc_header *)msg;
	if (rv < 0) {
	if (rv == -1)
	(void)test_attr_reply(ntohl(header->result), cmd);
	goto out_close;
	}
	len = ntohl(header->length);

	if (check_boothc_header(header, len) < 0) {
	log_error("message from %s receive error", site_string(site));
	rv = -1;
	goto out_close;
	}

	if (check_auth(site, msg, len)) {
	log_error("%s failed to authenticate", site_string(site));
	rv = -1;
	goto out_close;
	}
	rv = test_attr_reply(ntohl(header->result), cmd);

	out_close:
	if (site)
	tpt->close(site);
	if (msg)
	free(msg);
	return rv;
	}

	/*
	* the server side
	*/

	/* need to invert gboolean, our success is 0
	*/
	#define gbool2rlt(i) (i ? RLT_SUCCESS : RLT_SYNC_FAIL)

	static void free_geo_attr(gpointer data)
	{
	struct geo_attr a = (struct geo_attr )data;

	if (!a)
	return;
	g_free(a->val);
	g_free(a);
	}

	-int store_geo_attr(struct ticket_config tk, const char name, char *val, int notime)
	+int store_geo_attr(struct ticket_config tk, const char name,
	+ const char *val, int notime)
	{
	struct geo_attr *a;
	GDestroyNotify free_geo_attr_notify = free_geo_attr;

	if (!tk)
	return -1;
	/*
	* allocate new, if attr doesn't already exist
	* copy the attribute value
	* send status
	*/
	if (!tk->attr)
	tk->attr = g_hash_table_new_full(g_str_hash, g_str_equal,
	free_geo_attr_notify, g_free);
	if (!tk->attr) {
	log_error("out of memory");
	return -1;
	}

	a = (struct geo_attr *)calloc(1, sizeof(struct geo_attr));
	if (!a) {
	log_error("out of memory");
	return -1;
	}

	a->val = g_strdup(val);
	if (!notime)
	get_time(&a->update_ts);

	g_hash_table_insert(tk->attr,
	g_strndup(name, BOOTH_NAME_LEN), a);

	return 0;
	}

	static cmd_result_t attr_set(struct ticket_config tk, struct boothc_attr_msg msg)
	{
	int rc;

	rc = store_geo_attr(tk, msg->attr.name, msg->attr.val, 0);
	if (rc) {
	return RLT_SYNC_FAIL;
	}
	(void)pcmk_handler.set_attr(tk, msg->attr.name, msg->attr.val);
	return RLT_SUCCESS;
	}

	static cmd_result_t attr_del(struct ticket_config tk, struct boothc_attr_msg msg)
	{
	gboolean rv;
	gpointer orig_key, value;

	/*
	* lookup attr
	* deallocate, if found
	* send status
	*/
	if (!tk->attr)
	return RLT_NO_SUCH_ATTR;

	rv = g_hash_table_lookup_extended(tk->attr, msg->attr.name,
	&orig_key, &value);
	if (!rv)
	return RLT_NO_SUCH_ATTR;

	rv = g_hash_table_remove(tk->attr, msg->attr.name);

	(void)pcmk_handler.del_attr(tk, msg->attr.name);

	return gbool2rlt(rv);
	}

	static void
	append_attr(gpointer key, gpointer value, gpointer user_data)
	{
	char attr_name = (char )key;
	struct geo_attr a = (struct geo_attr )value;
	GString data = (GString )user_data;
	char time_str[64];
	time_t ts;

	if (is_time_set(&a->update_ts)) {
	ts = wall_ts(&a->update_ts);
	strftime(time_str, sizeof(time_str), "%F %T",
	localtime(&ts));
	}
	g_string_append_printf(data, "%s %s %s\n",
	attr_name, a->val, time_str);
	}


	static cmd_result_t attr_get(struct ticket_config tk, int fd, struct boothc_attr_msg msg)
	{
	cmd_result_t rv = RLT_SUCCESS;
	struct boothc_hdr_msg hdr;
	struct geo_attr *a;
	GString *attr_val;

	/*
	* lookup attr
	* send value
	*/

	a = (struct geo_attr *)g_hash_table_lookup(tk->attr, msg->attr.name);
	if (!a)
	return RLT_NO_SUCH_ATTR;
	attr_val = g_string_new(NULL);
	if (!attr_val) {
	log_error("out of memory");
	return RLT_SYNC_FAIL;
	}
	g_string_printf(attr_val, "%s\n", a->val);
	init_header(&hdr.header, ATTR_GET, 0, 0, RLT_SUCCESS, 0,
	sizeof(hdr) + attr_val->len);
	if (send_header_plus(fd, &hdr, attr_val->str, attr_val->len))
	rv = RLT_SYNC_FAIL;
	if (attr_val)
	g_string_free(attr_val, FALSE);
	return rv;
	}

	static cmd_result_t attr_list(struct ticket_config tk, int fd, struct boothc_attr_msg msg)
	{
	GString *data;
	cmd_result_t rv;
	struct boothc_hdr_msg hdr;

	/*
	* list all attributes for the ticket
	* send the list
	*/
	data = g_string_sized_new(512);
	if (!data) {
	log_error("out of memory");
	return RLT_SYNC_FAIL;
	}
	g_hash_table_foreach(tk->attr, append_attr, data);

	init_header(&hdr.header, ATTR_LIST, 0, 0, RLT_SUCCESS, 0,
	sizeof(hdr) + data->len);
	rv = send_header_plus(fd, &hdr, data->str, data->len);

	if (data)
	g_string_free(data, FALSE);
	return rv;
	}

	int process_attr_request(struct client req_client, void buf)
	{
	cmd_result_t rv = RLT_SYNC_FAIL;
	struct ticket_config *tk;
	int cmd;
	struct boothc_attr_msg *msg;
	struct boothc_hdr_msg hdr;

	msg = (struct boothc_attr_msg *)buf;
	cmd = ntohl(msg->header.cmd);
	if (!check_ticket(msg->attr.tkt_id, &tk)) {
	log_warn("client referenced unknown ticket %s",
	msg->attr.tkt_id);
	rv = RLT_INVALID_ARG;
	goto reply_now;
	}

	switch (cmd) {
	case ATTR_LIST:
	rv = attr_list(tk, req_client->fd, msg);
	if (rv)
	goto reply_now;
	return 1;
	case ATTR_GET:
	rv = attr_get(tk, req_client->fd, msg);
	if (rv)
	goto reply_now;
	return 1;
	case ATTR_SET:
	rv = attr_set(tk, msg);
	break;
	case ATTR_DEL:
	rv = attr_del(tk, msg);
	break;
	}

	reply_now:
	init_header(&hdr.header, CL_RESULT, 0, 0, rv, 0, sizeof(hdr));
	send_header_plus(req_client->fd, &hdr, NULL, 0);
	return 1;
	}

	/* read attr message from another site */

	/* this is a NOOP and it should never be invoked
	* only clients retrieve/manage attributes and they connect
	* directly to the target site
	*/
	int attr_recv(void buf, struct booth_site source)
	{
	struct boothc_attr_msg *msg;
	struct ticket_config *tk;

	msg = (struct boothc_attr_msg *)buf;

	log_warn("unexpected attribute message from %s",
	site_string(source));

	if (!check_ticket(msg->attr.tkt_id, &tk)) {
	log_warn("got invalid ticket name %s from %s",
	msg->attr.tkt_id, site_string(source));
	source->invalid_cnt++;
	return 1;
	}

	return 0;
	}
	diff --git a/src/attr.h b/src/attr.h
	index a59e5e7..1c680bd 100644
	--- a/src/attr.h
	+++ b/src/attr.h
	@@ -1,39 +1,39 @@
	/*
	* Copyright (C) 2015 Dejan Muhamedagic <dejan@hello-penguin.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 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 program; if not, write to the Free Software Foundation, Inc.,
	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	*/

	#ifndef _ATTR_H
	#define _ATTR_H

	#define ATTR_PROG "geostore"

	#include "b_config.h"
	#include "log.h"
	#include <stdlib.h>
	#include <sys/types.h>
	#include "booth.h"
	#include "timer.h"
	#include <glib.h>

	void print_geostore_usage(void);
	int test_attr_reply(cmd_result_t reply_code, cmd_request_t cmd);
	int do_attr_command(cmd_request_t cmd);
	int process_attr_request(struct client req_client, void buf);
	int attr_recv(void buf, struct booth_site source);
	-int store_geo_attr(struct ticket_config tk, const char name, char *val, int notime);
	+int store_geo_attr(struct ticket_config tk, const char name, const char *val, int notime);

	#endif /* _ATTR_H */
	diff --git a/src/main.c b/src/main.c
	index ccf8c7a..fb0681e 100644
	--- a/src/main.c
	+++ b/src/main.c
	@@ -1,1588 +1,1588 @@
	/*
	* 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 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 program; if not, write to the Free Software Foundation, Inc.,
	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	*/

	#include <stdio.h>
	#include <unistd.h>
	#include <stdlib.h>
	#include <sched.h>
	#include <errno.h>
	#include <limits.h>
	#include <sys/file.h>
	#include <sys/types.h>
	#include <sys/stat.h>
	#include <sys/mman.h>
	#include <sys/time.h>
	#include <sys/resource.h>
	#include <sys/socket.h>
	#include <sys/un.h>
	#include <sys/poll.h>
	#include <sys/wait.h>
	#include <pacemaker/crm/services.h>
	#include <clplumbing/setproctitle.h>
	#include <sys/prctl.h>
	#include <clplumbing/coredumps.h>
	#include <fcntl.h>
	#include <string.h>
	#include <ctype.h>
	#include <assert.h>
	#include <error.h>
	#include <sys/ioctl.h>
	#include <termios.h>
	#include <signal.h>
	#include <netdb.h>
	#include <arpa/inet.h>
	#include <sys/types.h>
	#include "b_config.h"
	#include "log.h"
	#include "booth.h"
	#include "config.h"
	#include "transport.h"
	#include "inline-fn.h"
	#include "pacemaker.h"
	#include "ticket.h"
	#include "request.h"
	#include "attr.h"
	#include "handler.h"

	#define RELEASE_VERSION "1.0"
	#define RELEASE_STR RELEASE_VERSION " (build " BOOTH_BUILD_VERSION ")"

	#define CLIENT_NALLOC 32

	int daemonize = 0;
	int enable_stderr = 0;
	timetype start_time;


	/** Structure for "clients".
	* Filehandles with incoming data get registered here (and in pollfds),
	* along with their callbacks.
	* Because these can be reallocated with every new fd, addressing
	* happens _only_ by their numeric index. */
	struct client *clients = NULL;
	struct pollfd *pollfds = NULL;
	static int client_maxi;
	static int client_size = 0;


	static const struct booth_site _no_leader = {
	.addr_string = "none",
	.site_id = NO_ONE,
	};
	struct booth_site no_leader = (struct booth_site)& _no_leader;

	typedef enum
	{
	BOOTHD_STARTED=0,
	BOOTHD_STARTING
	} BOOTH_DAEMON_STATE;

	int poll_timeout;



	struct booth_config *booth_conf;
	struct command_line cl;

	static void client_alloc(void)
	{
	int i;

	if (!clients) {
	clients = malloc(CLIENT_NALLOC * sizeof(struct client));
	pollfds = malloc(CLIENT_NALLOC * sizeof(struct pollfd));
	} else {
	clients = realloc(clients, (client_size + CLIENT_NALLOC) *
	sizeof(struct client));
	pollfds = realloc(pollfds, (client_size + CLIENT_NALLOC) *
	sizeof(struct pollfd));
	}
	if (!clients \|\| !pollfds) {
	log_error("can't alloc for client array");
	exit(1);
	}

	for (i = client_size; i < client_size + CLIENT_NALLOC; i++) {
	clients[i].workfn = NULL;
	clients[i].deadfn = NULL;
	clients[i].fd = -1;
	pollfds[i].fd = -1;
	pollfds[i].revents = 0;
	}
	client_size += CLIENT_NALLOC;
	}

	static void client_dead(int ci)
	{
	struct client *c = clients + ci;

	if (c->fd != -1) {
	log_debug("removing client %d", c->fd);
	close(c->fd);
	}

	c->fd = -1;
	c->workfn = NULL;

	if (c->msg) {
	free(c->msg);
	c->msg = NULL;
	c->offset = 0;
	}

	pollfds[ci].fd = -1;
	}

	int client_add(int fd, const struct booth_transport *tpt,
	void (*workfn)(int ci),
	void (*deadfn)(int ci))
	{
	int i;
	struct client *c;


	if (client_size - 1 <= client_maxi ) {
	client_alloc();
	}

	for (i = 0; i < client_size; i++) {
	c = clients + i;
	if (c->fd != -1)
	continue;

	c->workfn = workfn;
	if (deadfn)
	c->deadfn = deadfn;
	else
	c->deadfn = client_dead;

	c->transport = tpt;
	c->fd = fd;
	c->msg = NULL;
	c->offset = 0;

	pollfds[i].fd = fd;
	pollfds[i].events = POLLIN;
	if (i > client_maxi)
	client_maxi = i;

	return i;
	}

	assert(!"no client");
	}

	int find_client_by_fd(int fd)
	{
	int i;

	if (fd < 0)
	return -1;

	for (i = 0; i <= client_maxi; i++) {
	if (clients[i].fd == fd)
	return i;
	}
	return -1;
	}

	static int format_peers(char *pdata, unsigned int len)
	{
	struct booth_site *s;
	char data, cp;
	char time_str[64];
	int i, alloc;

	*pdata = NULL;
	*len = 0;

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

	cp = data;
	foreach_node(i, s) {
	if (s == local)
	continue;
	strftime(time_str, sizeof(time_str), "%F %T",
	localtime(&s->last_recv));
	cp += snprintf(cp,
	alloc - (cp - data),
	"%-12s %s, last recv: %s\n",
	type_to_string(s->type),
	s->addr_string,
	time_str);
	cp += snprintf(cp,
	alloc - (cp - data),
	"\tSent pkts:%u error:%u resends:%u\n",
	s->sent_cnt,
	s->sent_err_cnt,
	s->resend_cnt);
	cp += snprintf(cp,
	alloc - (cp - data),
	"\tRecv pkts:%u error:%u authfail:%u invalid:%u\n\n",
	s->recv_cnt,
	s->recv_err_cnt,
	s->sec_cnt,
	s->invalid_cnt);
	if (alloc - (cp - data) <= 0)
	return -ENOMEM;
	}

	*pdata = data;
	*len = cp - data;

	return 0;
	}


	void list_peers(int fd)
	{
	char *data;
	unsigned int olen;
	struct boothc_hdr_msg hdr;

	if (format_peers(&data, &olen) < 0)
	goto out;

	init_header(&hdr.header, CL_LIST, 0, 0, RLT_SUCCESS, 0, sizeof(hdr) + olen);
	(void)send_header_plus(fd, &hdr, data, olen);

	out:
	if (data)
	free(data);
	}

	/* trim trailing spaces if the key is ascii
	*/
	static void trim_key()
	{
	unsigned char *p;
	int i;

	for (i=0, p=booth_conf->authkey; i < booth_conf->authkey_len; i++, p++)
	if (!isascii(*p))
	return;

	p = booth_conf->authkey;
	while (booth_conf->authkey_len > 0 && isspace(*p)) {
	p++;
	booth_conf->authkey_len--;
	}
	memmove(booth_conf->authkey, p, booth_conf->authkey_len);

	p = booth_conf->authkey + booth_conf->authkey_len - 1;
	while (booth_conf->authkey_len > 0 && isspace(*p)) {
	booth_conf->authkey_len--;
	p--;
	}
	}

	static int read_authkey()
	{
	int fd;

	booth_conf->authkey[0] = '\0';
	if (stat(booth_conf->authfile, &booth_conf->authstat) < 0) {
	log_error("cannot stat authentication file %s: %s",
	booth_conf->authfile, strerror(errno));
	return -1;
	}
	if (booth_conf->authstat.st_mode & (S_IRGRP \| S_IROTH)) {
	log_error("%s: file can be readable only for the owner", booth_conf->authfile);
	return -1;
	}
	fd = open(booth_conf->authfile, O_RDONLY);
	if (fd < 0) {
	log_error("cannot open %s: %s",
	booth_conf->authfile, strerror(errno));
	return -1;
	}
	booth_conf->authkey_len = read(fd, booth_conf->authkey, BOOTH_MAX_KEY_LEN);
	close(fd);
	trim_key();
	log_debug("read key of size %d in authfile %s",
	booth_conf->authkey_len, booth_conf->authfile);
	/* make sure that the key is of minimum length */
	return (booth_conf->authkey_len >= BOOTH_MIN_KEY_LEN) ? 0 : -1;
	}

	int update_authkey()
	{
	struct stat statbuf;

	if (stat(booth_conf->authfile, &statbuf) < 0) {
	log_error("cannot stat authentication file %s: %s",
	booth_conf->authfile, strerror(errno));
	return -1;
	}
	if (statbuf.st_mtime > booth_conf->authstat.st_mtime) {
	return read_authkey();
	}
	return 0;
	}

	static int setup_config(int type)
	{
	int rv;

	rv = read_config(cl.configfile, type);
	if (rv < 0)
	goto out;

	if (booth_conf->authfile[0] != '\0') {
	rv = read_authkey();
	if (rv < 0)
	goto out;
	}

	/* Set "local" pointer, ignoring errors. */
	if (cl.type == DAEMON && cl.site[0]) {
	if (!find_site_by_name(cl.site, &local, 1)) {
	log_error("Cannot find \"%s\" in the configuration.",
	cl.site);
	return -EINVAL;
	}
	local->local = 1;
	} else
	find_myself(NULL, type == CLIENT \|\| type == GEOSTORE);


	rv = check_config(type);
	if (rv < 0)
	goto out;


	/* Per default the PID file name is derived from the
	* configuration name. */
	if (!cl.lockfile[0]) {
	snprintf(cl.lockfile, sizeof(cl.lockfile)-1,
	"%s/%s.pid", BOOTH_RUN_DIR, booth_conf->name);
	}

	out:
	return rv;
	}

	static int setup_transport(void)
	{
	int rv;

	rv = transport()->init(message_recv);
	if (rv < 0) {
	log_error("failed to init booth_transport %s", transport()->name);
	goto out;
	}

	rv = booth_transport[TCP].init(NULL);
	if (rv < 0) {
	log_error("failed to init booth_transport[TCP]");
	goto out;
	}

	out:
	return rv;
	}


	static int write_daemon_state(int fd, int state)
	{
	char buffer[1024];
	int rv, size;

	size = sizeof(buffer) - 1;
	rv = snprintf(buffer, size,
	"booth_pid=%d "
	"booth_state=%s "
	"booth_type=%s "
	"booth_cfg_name='%s' "
	"booth_id=%d "
	"booth_addr_string='%s' "
	"booth_port=%d\n",
	getpid(),
	( state == BOOTHD_STARTED ? "started" :
	state == BOOTHD_STARTING ? "starting" :
	"invalid"),
	type_to_string(local->type),
	booth_conf->name,
	local->site_id,
	local->addr_string,
	booth_conf->port);

	if (rv < 0 \|\| rv == size) {
	log_error("Buffer filled up in write_daemon_state().");
	return -1;
	}
	size = rv;


	rv = ftruncate(fd, 0);
	if (rv < 0) {
	log_error("lockfile %s truncate error %d: %s",
	cl.lockfile, errno, strerror(errno));
	return rv;
	}


	rv = lseek(fd, 0, SEEK_SET);
	if (rv < 0) {
	log_error("lseek set fd(%d) offset to 0 error, return(%d), message(%s)",
	fd, rv, strerror(errno));
	rv = -1;
	return rv;
	}


	rv = write(fd, buffer, size);

	if (rv != size) {
	log_error("write to fd(%d, %d) returned %d, errno %d, message(%s)",
	fd, size,
	rv, errno, strerror(errno));
	return -1;
	}

	return 0;
	}

	static int loop(int fd)
	{
	void (*workfn) (int ci);
	void (*deadfn) (int ci);
	int rv, i;

	rv = setup_transport();
	if (rv < 0)
	goto fail;

	rv = setup_ticket();
	if (rv < 0)
	goto fail;

	rv = write_daemon_state(fd, BOOTHD_STARTED);
	if (rv != 0) {
	log_error("write daemon state %d to lockfile error %s: %s",
	BOOTHD_STARTED, cl.lockfile, strerror(errno));
	goto fail;
	}

	log_info("BOOTH %s daemon started, node id is 0x%08X (%d).",
	type_to_string(local->type),
	local->site_id, local->site_id);

	while (1) {
	rv = poll(pollfds, client_maxi + 1, poll_timeout);
	if (rv == -1 && errno == EINTR)
	continue;
	if (rv < 0) {
	log_error("poll failed: %s (%d)", strerror(errno), errno);
	goto fail;
	}

	for (i = 0; i <= client_maxi; i++) {
	if (clients[i].fd < 0)
	continue;

	if (pollfds[i].revents & POLLIN) {
	workfn = clients[i].workfn;
	if (workfn)
	workfn(i);
	}
	if (pollfds[i].revents &
	(POLLERR \| POLLHUP \| POLLNVAL)) {
	deadfn = clients[i].deadfn;
	if (deadfn)
	deadfn(i);
	}
	}

	process_tickets();
	}

	return 0;

	fail:
	return -1;
	}


	static int test_reply(cmd_result_t reply_code, cmd_request_t cmd)
	{
	int rv = 0;
	const char *op_str = "";

	if (cmd == CMD_GRANT)
	op_str = "grant";
	else if (cmd == CMD_REVOKE)
	op_str = "revoke";
	else if (cmd == CMD_LIST)
	op_str = "list";
	else if (cmd == CMD_PEERS)
	op_str = "peers";
	else {
	log_error("internal error reading reply result!");
	return -1;
	}

	switch (reply_code) {
	case RLT_OVERGRANT:
	log_info("You're granting a granted ticket. "
	"If you wanted to migrate a ticket, "
	"use revoke first, then use grant.");
	rv = -1;
	break;

	case RLT_TICKET_IDLE:
	log_info("ticket is not owned");
	rv = 0;
	break;

	case RLT_ASYNC:
	log_info("%s command sent, result will be returned "
	"asynchronously. Please use \"booth list\" to "
	"see the outcome.", op_str);
	rv = 0;
	break;

	case RLT_CIB_PENDING:
	log_info("%s succeeded (CIB commit pending)", op_str);
	/* wait for the CIB commit? */
	rv = (cl.options & OPT_WAIT_COMMIT) ? 3 : 0;
	break;

	case RLT_MORE:
	rv = 2;
	break;

	case RLT_SYNC_SUCC:
	case RLT_SUCCESS:
	if (cmd != CMD_LIST && cmd != CMD_PEERS)
	log_info("%s succeeded!", op_str);
	rv = 0;
	break;

	case RLT_SYNC_FAIL:
	log_info("%s failed!", op_str);
	rv = -1;
	break;

	case RLT_INVALID_ARG:
	log_error("ticket \"%s\" does not exist",
	cl.msg.ticket.id);
	rv = -1;
	break;

	case RLT_AUTH:
	log_error("authentication error");
	rv = -1;
	break;

	case RLT_EXT_FAILED:
	log_error("before-acquire-handler for ticket \"%s\" failed, grant denied",
	cl.msg.ticket.id);
	rv = -1;
	break;

	case RLT_ATTR_PREREQ:
	log_error("attr-prereq for ticket \"%s\" failed, grant denied",
	cl.msg.ticket.id);
	rv = -1;
	break;

	case RLT_REDIRECT:
	/* talk to another site */
	rv = 1;
	break;

	default:
	log_error("got an error code: %x", rv);
	rv = -1;
	}
	return rv;
	}

	static int query_get_string_answer(cmd_request_t cmd)
	{
	struct booth_site *site;
	struct boothc_hdr_msg reply;
	struct boothc_header *header;
	char *data;
	int data_len;
	int rv;
	struct booth_transport const *tpt;
	int (*test_reply_f) (cmd_result_t reply_code, cmd_request_t cmd);
	size_t msg_size;
	void *request;

	if (cl.type == GEOSTORE) {
	test_reply_f = test_attr_reply;
	msg_size = sizeof(cl.attr_msg);
	request = &cl.attr_msg;
	} else {
	test_reply_f = test_reply;
	msg_size = sizeof(cl.msg);
	request = &cl.msg;
	}
	header = (struct boothc_header *)request;
	data = NULL;

	init_header(header, cmd, 0, cl.options, 0, 0, msg_size);

	if (!*cl.site)
	site = local;
	else if (!find_site_by_name(cl.site, &site, 1)) {
	log_error("cannot find site \"%s\"", cl.site);
	rv = ENOENT;
	goto out;
	}

	tpt = booth_transport + TCP;
	rv = tpt->open(site);
	if (rv < 0)
	goto out_close;

	rv = tpt->send(site, request, msg_size);
	if (rv < 0)
	goto out_close;

	rv = tpt->recv_auth(site, &reply, sizeof(reply));
	if (rv < 0)
	goto out_close;

	data_len = ntohl(reply.header.length) - rv;

	/* no attribute, or no ticket found */
	if (!data_len) {
	goto out_test_reply;
	}

	data = malloc(data_len+1);
	if (!data) {
	rv = -ENOMEM;
	goto out_close;
	}
	rv = tpt->recv(site, data, data_len);
	if (rv < 0)
	goto out_close;
	*(data+data_len) = '\0';

	*(data + data_len) = '\0';
	(void)fputs(data, stdout);
	fflush(stdout);
	rv = 0;

	out_test_reply:
	rv = test_reply_f(ntohl(reply.header.result), cmd);
	out_close:
	tpt->close(site);
	out:
	if (data)
	free(data);
	return rv;
	}


	static int do_command(cmd_request_t cmd)
	{
	struct booth_site *site;
	struct boothc_ticket_msg reply;
	struct booth_transport const *tpt;
	uint32_t leader_id;
	int rv;
	int reply_cnt = 0, msg_logged = 0;
	const char *op_str = "";

	if (cmd == CMD_GRANT)
	op_str = "grant";
	else if (cmd == CMD_REVOKE)
	op_str = "revoke";

	rv = 0;
	site = NULL;

	/* Always use TCP for client - at least for now. */
	tpt = booth_transport + TCP;

	if (!*cl.site)
	site = local;
	else {
	if (!find_site_by_name(cl.site, &site, 1)) {
	log_error("Site \"%s\" not configured.", cl.site);
	goto out_close;
	}
	}

	if (site->type == ARBITRATOR) {
	if (site == local) {
	log_error("We're just an arbitrator, cannot grant/revoke tickets here.");
	} else {
	log_error("%s is just an arbitrator, cannot grant/revoke tickets there.", cl.site);
	}
	goto out_close;
	}

	assert(site->type == SITE);

	/* We don't check for existence of ticket, so that asking can be
	* done without local configuration, too.
	* Although, that means that the UDP port has to be specified, too. */
	if (!cl.msg.ticket.id[0]) {
	/* If the loaded configuration has only a single ticket defined, use that. */
	if (booth_conf->ticket_count == 1) {
	strcpy(cl.msg.ticket.id, booth_conf->ticket[0].name);
	} else {
	log_error("No ticket given.");
	goto out_close;
	}
	}

	redirect:
	init_header(&cl.msg.header, cmd, 0, cl.options, 0, 0, sizeof(cl.msg));

	rv = tpt->open(site);
	if (rv < 0)
	goto out_close;

	rv = tpt->send(site, &cl.msg, sendmsglen(&cl.msg));
	if (rv < 0)
	goto out_close;

	read_more:
	rv = tpt->recv_auth(site, &reply, sizeof(reply));
	if (rv < 0) {
	/* print any errors depending on the code sent by the
	* server */
	(void)test_reply(ntohl(reply.header.result), cmd);
	goto out_close;
	}

	rv = test_reply(ntohl(reply.header.result), cmd);
	if (rv == 1) {
	tpt->close(site);
	leader_id = ntohl(reply.ticket.leader);
	if (!find_site_by_id(leader_id, &site)) {
	log_error("Message with unknown redirect site %x received", leader_id);
	rv = -1;
	goto out_close;
	}
	goto redirect;
	} else if (rv == 2 \|\| rv == 3) {
	/* the server has more to say */
	/* don't wait too long */
	if (reply_cnt > 1 && !(cl.options & OPT_WAIT)) {
	rv = 0;
	log_info("Giving up on waiting for the definite result. "
	"Please use \"booth list\" later to "
	"see the outcome.");
	goto out_close;
	}
	if (reply_cnt == 0) {
	log_info("%s request sent, "
	"waiting for the result ...", op_str);
	msg_logged++;
	} else if (rv == 3 && msg_logged < 2) {
	log_info("waiting for the CIB commit ...");
	msg_logged++;
	}
	reply_cnt++;
	goto read_more;
	}

	out_close:
	if (site)
	tpt->close(site);
	return rv;
	}



	static int _lockfile(int mode, int fdp, pid_t locked_by)
	{
	struct flock lock;
	int fd, rv;


	/* After reboot the directory may not yet exist.
	* Try to create it, but ignore errors. */
	if (strncmp(cl.lockfile, BOOTH_RUN_DIR,
	strlen(BOOTH_RUN_DIR)) == 0)
	mkdir(BOOTH_RUN_DIR, 0775);


	if (locked_by)
	*locked_by = 0;

	*fdp = -1;
	fd = open(cl.lockfile, mode, 0664);
	if (fd < 0)
	return errno;

	*fdp = fd;

	lock.l_type = F_WRLCK;
	lock.l_start = 0;
	lock.l_whence = SEEK_SET;
	lock.l_len = 0;
	lock.l_pid = 0;


	if (fcntl(fd, F_SETLK, &lock) == 0)
	return 0;

	rv = errno;

	if (locked_by)
	if (fcntl(fd, F_GETLK, &lock) == 0)
	*locked_by = lock.l_pid;

	return rv;
	}


	static inline int is_root(void)
	{
	return geteuid() == 0;
	}


	static int create_lockfile(void)
	{
	int rv, fd;

	fd = -1;
	rv = _lockfile(O_CREAT \| O_WRONLY, &fd, NULL);

	if (fd == -1) {
	log_error("lockfile %s open error %d: %s",
	cl.lockfile, rv, strerror(rv));
	return -1;
	}

	if (rv < 0) {
	log_error("lockfile %s setlk error %d: %s",
	cl.lockfile, rv, strerror(rv));
	goto fail;
	}

	rv = write_daemon_state(fd, BOOTHD_STARTING);
	if (rv != 0) {
	log_error("write daemon state %d to lockfile error %s: %s",
	BOOTHD_STARTING, cl.lockfile, strerror(errno));
	goto fail;
	}

	if (is_root()) {
	if (fchown(fd, booth_conf->uid, booth_conf->gid) < 0)
	log_error("fchown() on lockfile said %d: %s",
	errno, strerror(errno));
	}

	return fd;

	fail:
	close(fd);
	return -1;
	}

	static void unlink_lockfile(int fd)
	{
	unlink(cl.lockfile);
	close(fd);
	}

	static void print_usage(void)
	{
	printf(
	"Usage:\n"
	" booth list [options]\n"
	" booth {grant\|revoke} [options] <ticket>\n"
	" booth status [options]\n"
	"\n"
	" list: List all tickets\n"
	" grant: Grant ticket to site\n"
	" revoke: Revoke ticket\n"
	"\n"
	"Options:\n"
	" -c FILE Specify config file [default " BOOTH_DEFAULT_CONF "]\n"
	" Can be a path or just a name without \".conf\" suffix\n"
	" -s <site> Connect/grant to a different site\n"
	" -F Try to grant the ticket immediately\n"
	" even if not all sites are reachable\n"
	" -w Wait forever for the outcome of the request\n"
	" -C Wait until the ticket is committed to the CIB (grant only)\n"
	" -h Print this help\n"
	"\n"
	"Examples:\n"
	"\n"
	" # booth list (list tickets)\n"
	" # booth grant ticket-A (grant ticket here)\n"
	" # booth grant -s 10.121.8.183 ticket-A (grant ticket to site 10.121.8.183)\n"
	" # booth revoke ticket-A (revoke ticket)\n"
	"\n"
	"See the booth(8) man page for more details.\n"
	);
	}

	#define OPTION_STRING "c:Dl:t:s:FhSwC"
	#define ATTR_OPTION_STRING "c:Dt:s:h"

	void safe_copy(char dest, char value, size_t buflen, const char *description) {
	int content_len = buflen - 1;

	if (strlen(value) >= content_len) {
	fprintf(stderr, "'%s' exceeds maximum %s length of %d\n",
	value, description, content_len);
	exit(EXIT_FAILURE);
	}
	strncpy(dest, value, content_len);
	dest[content_len] = 0;
	}

	static int host_convert(char hostname, char ip_str, size_t ip_size)
	{
	struct addrinfo *result = NULL, hints = {0};
	int re = -1;

	memset(&hints, 0, sizeof(hints));
	hints.ai_family = AF_INET;
	hints.ai_socktype = SOCK_DGRAM;

	re = getaddrinfo(hostname, NULL, &hints, &result);

	if (re == 0) {
	struct in_addr addr = ((struct sockaddr_in *)result->ai_addr)->sin_addr;
	const char *re_ntop = inet_ntop(AF_INET, &addr, ip_str, ip_size);
	if (re_ntop == NULL) {
	re = -1;
	}
	}

	freeaddrinfo(result);
	return re;
	}

	#define cparg(dest, descr) do { \
	if (optind >= argc) \
	goto missingarg; \
	safe_copy(dest, argv[optind], sizeof(dest), descr); \
	optind++; \
	} while(0)

	static int read_arguments(int argc, char **argv)
	{
	int optchar;
	char *arg1 = argv[1];
	char *op = NULL;
	char *cp;
	const char *opt_string = OPTION_STRING;
	char site_arg[INET_ADDRSTRLEN] = {0};
	int left;

	cl.type = 0;
	if ((cp = strstr(argv[0], ATTR_PROG)) &&
	!strcmp(cp, ATTR_PROG)) {
	cl.type = GEOSTORE;
	op = argv[1];
	optind = 2;
	opt_string = ATTR_OPTION_STRING;
	} else if (argc > 1 && (strcmp(arg1, "arbitrator") == 0 \|\|
	strcmp(arg1, "site") == 0 \|\|
	strcmp(arg1, "start") == 0 \|\|
	strcmp(arg1, "daemon") == 0)) {
	cl.type = DAEMON;
	optind = 2;
	} else if (argc > 1 && (strcmp(arg1, "status") == 0)) {
	cl.type = STATUS;
	optind = 2;
	} else if (argc > 1 && (strcmp(arg1, "client") == 0)) {
	cl.type = CLIENT;
	if (argc < 3) {
	print_usage();
	exit(EXIT_FAILURE);
	}
	op = argv[2];
	optind = 3;
	}
	if (!cl.type) {
	cl.type = CLIENT;
	op = argv[1];
	optind = 2;
	}

	if (argc < 2 \|\| !strcmp(arg1, "help") \|\| !strcmp(arg1, "--help") \|\|
	!strcmp(arg1, "-h")) {
	if (cl.type == GEOSTORE)
	print_geostore_usage();
	else
	print_usage();
	exit(EXIT_SUCCESS);
	}

	if (!strcmp(arg1, "version") \|\| !strcmp(arg1, "--version") \|\|
	!strcmp(arg1, "-V")) {
	printf("%s %s\n", argv[0], RELEASE_STR);
	exit(EXIT_SUCCESS);
	}

	if (cl.type == CLIENT) {
	if (!strcmp(op, "list"))
	cl.op = CMD_LIST;
	else if (!strcmp(op, "grant"))
	cl.op = CMD_GRANT;
	else if (!strcmp(op, "revoke"))
	cl.op = CMD_REVOKE;
	else if (!strcmp(op, "peers"))
	cl.op = CMD_PEERS;
	else {
	fprintf(stderr, "client operation \"%s\" is unknown\n",
	op);
	exit(EXIT_FAILURE);
	}
	} else if (cl.type == GEOSTORE) {
	if (!strcmp(op, "list"))
	cl.op = ATTR_LIST;
	else if (!strcmp(op, "set"))
	cl.op = ATTR_SET;
	else if (!strcmp(op, "get"))
	cl.op = ATTR_GET;
	else if (!strcmp(op, "delete"))
	cl.op = ATTR_DEL;
	else {
	fprintf(stderr, "attribute operation \"%s\" is unknown\n",
	op);
	exit(EXIT_FAILURE);
	}
	}

	while (optind < argc) {
	optchar = getopt(argc, argv, opt_string);

	switch (optchar) {
	case 'c':
	if (strchr(optarg, '/')) {
	safe_copy(cl.configfile, optarg,
	sizeof(cl.configfile), "config file");
	} else {
	/* If no "/" in there, use with default directory. */
	strcpy(cl.configfile, BOOTH_DEFAULT_CONF_DIR);
	cp = cl.configfile + strlen(BOOTH_DEFAULT_CONF_DIR);
	assert(cp > cl.configfile);
	assert(*(cp-1) == '/');

	/* Write at the \0, ie. after the "/" */
	safe_copy(cp, optarg,
	(sizeof(cl.configfile) -
	(cp - cl.configfile) -
	strlen(BOOTH_DEFAULT_CONF_EXT)),
	"config name");

	/* If no extension, append ".conf".
	* Space is available, see -strlen() above. */
	if (!strchr(cp, '.'))
	strcat(cp, BOOTH_DEFAULT_CONF_EXT);
	}
	break;
	case 'D':
	debug_level++;
	enable_stderr = 1;
	/* Fall through */
	case 'S':
	daemonize = 1;
	break;

	case 'l':
	safe_copy(cl.lockfile, optarg, sizeof(cl.lockfile), "lock file");
	break;
	case 't':
	if (cl.op == CMD_GRANT \|\| cl.op == CMD_REVOKE) {
	safe_copy(cl.msg.ticket.id, optarg,
	sizeof(cl.msg.ticket.id), "ticket name");
	} else if (cl.type == GEOSTORE) {
	safe_copy(cl.attr_msg.attr.tkt_id, optarg,
	sizeof(cl.attr_msg.attr.tkt_id), "ticket name");
	} else {
	print_usage();
	exit(EXIT_FAILURE);
	}
	break;

	case 's':
	/* For testing and debugging: allow "-s site" also for
	* daemon start, so that the address that should be used
	* can be set manually.
	* This makes it easier to start multiple processes
	* on one machine. */
	if (cl.type == CLIENT \|\| cl.type == GEOSTORE \|\|
	(cl.type == DAEMON && debug_level)) {
	if (strcmp(optarg, OTHER_SITE) &&
	host_convert(optarg, site_arg, INET_ADDRSTRLEN) == 0) {
	safe_copy(cl.site, site_arg, sizeof(cl.site), "site name");
	} else {
	safe_copy(cl.site, optarg, sizeof(cl.site), "site name");
	}
	} else {
	log_error("\"-s\" not allowed in daemon mode.");
	exit(EXIT_FAILURE);
	}
	break;

	case 'F':
	if (cl.type != CLIENT \|\| cl.op != CMD_GRANT) {
	log_error("use \"-F\" only for client grant");
	exit(EXIT_FAILURE);
	}
	cl.options \|= OPT_IMMEDIATE;
	break;

	case 'w':
	if (cl.type != CLIENT \|\|
	(cl.op != CMD_GRANT && cl.op != CMD_REVOKE)) {
	log_error("use \"-w\" only for grant and revoke");
	exit(EXIT_FAILURE);
	}
	cl.options \|= OPT_WAIT;
	break;

	case 'C':
	if (cl.type != CLIENT \|\| cl.op != CMD_GRANT) {
	log_error("use \"-C\" only for grant");
	exit(EXIT_FAILURE);
	}
	cl.options \|= OPT_WAIT \| OPT_WAIT_COMMIT;
	break;

	case 'h':
	if (cl.type == GEOSTORE)
	print_geostore_usage();
	else
	print_usage();
	exit(EXIT_SUCCESS);
	break;

	case ':':
	case '?':
	fprintf(stderr, "Please use '-h' for usage.\n");
	exit(EXIT_FAILURE);
	break;

	case -1:
	/* No more parameters on cmdline, only arguments. */
	goto extra_args;

	default:
	goto unknown;
	};
	}

	return 0;

	extra_args:
	if (cl.type == CLIENT && !cl.msg.ticket.id[0]) {
	cparg(cl.msg.ticket.id, "ticket name");
	} else if (cl.type == GEOSTORE) {
	if (cl.op != ATTR_LIST) {
	cparg(cl.attr_msg.attr.name, "attribute name");
	}
	if (cl.op == ATTR_SET) {
	cparg(cl.attr_msg.attr.val, "attribute value");
	}
	}

	if (optind == argc)
	return 0;


	left = argc - optind;
	fprintf(stderr, "Superfluous argument%s: %s%s\n",
	left == 1 ? "" : "s",
	argv[optind],
	left == 1 ? "" : "...");
	exit(EXIT_FAILURE);

	unknown:
	fprintf(stderr, "unknown option: %s\n", argv[optind]);
	exit(EXIT_FAILURE);

	missingarg:
	fprintf(stderr, "not enough arguments\n");
	exit(EXIT_FAILURE);
	}


	static void set_scheduler(void)
	{
	struct sched_param sched_param;
	struct rlimit rlimit;
	int rv;

	rlimit.rlim_cur = RLIM_INFINITY;
	rlimit.rlim_max = RLIM_INFINITY;
	setrlimit(RLIMIT_MEMLOCK, &rlimit);
	rv = mlockall(MCL_CURRENT \| MCL_FUTURE);
	if (rv < 0) {
	log_error("mlockall failed");
	}

	rv = sched_get_priority_max(SCHED_RR);
	if (rv != -1) {
	sched_param.sched_priority = rv;
	rv = sched_setscheduler(0, SCHED_RR, &sched_param);
	if (rv == -1)
	log_error("could not set SCHED_RR priority %d: %s (%d)",
	sched_param.sched_priority,
	strerror(errno), errno);
	} else {
	log_error("could not get maximum scheduler priority err %d",
	errno);
	}
	}

	static int set_procfs_val(const char path, const char val)
	{
	int rc = -1;
	FILE *fp = fopen(path, "w");

	if (fp) {
	if (fprintf(fp, "%s", val) > 0)
	rc = 0;
	fclose(fp);
	}
	return rc;
	}

	static int do_status(int type)
	{
	pid_t pid;
	int rv, lock_fd, ret;
	const char *reason = NULL;
	char lockfile_data[1024], *cp;


	ret = PCMK_OCF_NOT_RUNNING;

	rv = setup_config(type);
	if (rv) {
	reason = "Error reading configuration.";
	ret = PCMK_OCF_UNKNOWN_ERROR;
	goto quit;
	}


	if (!local) {
	reason = "No Service IP active here.";
	goto quit;
	}


	rv = _lockfile(O_RDWR, &lock_fd, &pid);
	if (rv == 0) {
	reason = "PID file not locked.";
	goto quit;
	}
	if (lock_fd == -1) {
	reason = "No PID file.";
	goto quit;
	}

	if (pid) {
	fprintf(stdout, "booth_lockpid=%d ", pid);
	fflush(stdout);
	}


	rv = read(lock_fd, lockfile_data, sizeof(lockfile_data) - 1);
	if (rv < 4) {
	reason = "Cannot read lockfile data.";
	ret = PCMK_LSB_UNKNOWN_ERROR;
	goto quit;

	}
	lockfile_data[rv] = 0;

	if (lock_fd != -1)
	close(lock_fd);


	/* Make sure it's only a single line */
	cp = strchr(lockfile_data, '\r');
	if (cp)
	*cp = 0;
	cp = strchr(lockfile_data, '\n');
	if (cp)
	*cp = 0;



	rv = setup_tcp_listener(1);
	if (rv == 0) {
	reason = "TCP port not in use.";
	goto quit;
	}


	fprintf(stdout, "booth_lockfile='%s' %s\n",
	cl.lockfile, lockfile_data);
	if (daemonize)
	fprintf(stderr, "Booth at %s port %d seems to be running.\n",
	local->addr_string, booth_conf->port);
	return 0;


	quit:
	log_debug("not running: %s", reason);
	/* Ie. "DEBUG" */
	if (daemonize)
	fprintf(stderr, "not running: %s\n", reason);
	return ret;
	}


	static int limit_this_process(void)
	{
	int rv;
	if (!is_root())
	return 0;

	if (setregid(booth_conf->gid, booth_conf->gid) < 0) {
	rv = errno;
	log_error("setregid() didn't work: %s", strerror(rv));
	return rv;
	}

	if (setreuid(booth_conf->uid, booth_conf->uid) < 0) {
	rv = errno;
	log_error("setreuid() didn't work: %s", strerror(rv));
	return rv;
	}

	return 0;
	}

	static int lock_fd = -1;

	static void server_exit(void)
	{
	int rv;

	if (lock_fd >= 0) {
	/* We might not be able to delete it, but at least
	* make it empty. */
	rv = ftruncate(lock_fd, 0);
	(void)rv;
	unlink_lockfile(lock_fd);
	}
	log_info("exiting");
	}

	static void sig_exit_handler(int sig)
	{
	log_info("caught signal %d", sig);
	exit(0);
	}

	static int do_server(int type)
	{
	int rv = -1;
	static char log_ent[128] = DAEMON_NAME "-";

	rv = setup_config(type);
	if (rv < 0)
	return rv;

	if (!local) {
	log_error("Cannot find myself in the configuration.");
	exit(EXIT_FAILURE);
	}

	if (!daemonize) {
	if (daemon(0, 0) < 0) {
	perror("daemon error");
	exit(EXIT_FAILURE);
	}
	}

	/* The lockfile must be written to _after_ the call to daemon(), so
	* that the lockfile contains the pid of the daemon, not the parent. */
	lock_fd = create_lockfile();
	if (lock_fd < 0)
	return lock_fd;

	atexit(server_exit);

	strcat(log_ent, type_to_string(local->type));
	cl_log_set_entity(log_ent);
	cl_log_enable_stderr(enable_stderr ? TRUE : FALSE);
	cl_log_set_facility(HA_LOG_FACILITY);
	cl_inherit_logging_environment(0);

	log_info("BOOTH %s %s daemon is starting",
	type_to_string(local->type), RELEASE_STR);

	signal(SIGUSR1, (__sighandler_t)tickets_log_info);
	signal(SIGTERM, (__sighandler_t)sig_exit_handler);
	signal(SIGINT, (__sighandler_t)sig_exit_handler);
	/* we'll handle errors there and then */
	signal(SIGPIPE, SIG_IGN);

	set_scheduler();
	/* we don't want to be killed by the OOM-killer */
	if (set_procfs_val("/proc/self/oom_score_adj", "-999"))
	(void)set_procfs_val("/proc/self/oom_adj", "-16");
	set_proc_title("%s %s %s for [%s]:%d",
	DAEMON_NAME,
	cl.configfile,
	type_to_string(local->type),
	local->addr_string,
	booth_conf->port);

	rv = limit_this_process();
	if (rv)
	return rv;

	if (cl_enable_coredumps(TRUE) < 0){
	log_error("enabling core dump failed");
	}
	cl_cdtocoredir();
	prctl(PR_SET_DUMPABLE, (unsigned long)TRUE, 0UL, 0UL, 0UL);

	signal(SIGCHLD, (__sighandler_t)wait_child);
	rv = loop(lock_fd);

	return rv;
	}

	static int do_client(void)
	{
	int rv;

	rv = setup_config(CLIENT);
	if (rv < 0) {
	log_error("cannot read config");
	goto out;
	}

	switch (cl.op) {
	case CMD_LIST:
	case CMD_PEERS:
	rv = query_get_string_answer(cl.op);
	break;

	case CMD_GRANT:
	case CMD_REVOKE:
	rv = do_command(cl.op);
	break;
	}

	out:
	return rv;
	}

	static int do_attr(void)
	{
	int rv = -1;

	rv = setup_config(GEOSTORE);
	if (rv < 0) {
	log_error("cannot read config");
	goto out;
	}

	/* We don't check for existence of ticket, so that asking can be
	* done without local configuration, too.
	* Although, that means that the UDP port has to be specified, too. */
	if (!cl.attr_msg.attr.tkt_id[0]) {
	/* If the loaded configuration has only a single ticket defined, use that. */
	if (booth_conf->ticket_count == 1) {
	strcpy(cl.attr_msg.attr.tkt_id, booth_conf->ticket[0].name);
	} else {
	rv = 1;
	log_error("No ticket given.");
	goto out;
	}
	}

	switch (cl.op) {
	case ATTR_LIST:
	case ATTR_GET:
	rv = query_get_string_answer(cl.op);
	break;

	case ATTR_SET:
	case ATTR_DEL:
	rv = do_attr_command(cl.op);
	break;
	}

	out:
	return rv;
	}

	int main(int argc, char argv[], char envp[])
	{
	int rv;
	- char *cp;
	+ const char *cp;

	init_set_proc_title(argc, argv, envp);
	get_time(&start_time);

	memset(&cl, 0, sizeof(cl));
	strncpy(cl.configfile,
	BOOTH_DEFAULT_CONF, BOOTH_PATH_LEN - 1);
	cl.lockfile[0] = 0;
	debug_level = 0;

	cl_log_set_entity(
	(cp = strstr(argv[0], ATTR_PROG)) && !strcmp(cp, ATTR_PROG)
	? ATTR_PROG
	: "booth"
	);
	cl_log_enable_stderr(TRUE);
	cl_log_set_facility(0);


	rv = read_arguments(argc, argv);
	if (rv < 0)
	goto out;


	switch (cl.type) {
	case STATUS:
	rv = do_status(cl.type);
	break;

	case ARBITRATOR:
	case DAEMON:
	case SITE:
	rv = do_server(cl.type);
	break;

	case CLIENT:
	rv = do_client();
	break;

	case GEOSTORE:
	rv = do_attr();
	break;
	}

	out:
	/* Normalize values. 0x100 would be seen as "OK" by waitpid(). */
	return (rv >= 0 && rv < 0x70) ? rv : 1;
	}
	diff --git a/src/pacemaker.c b/src/pacemaker.c
	index c5c386e..914f146 100644
	--- a/src/pacemaker.c
	+++ b/src/pacemaker.c
	@@ -1,530 +1,539 @@
	/*
	* 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 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 program; if not, write to the Free Software Foundation, Inc.,
	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	*/

	#include <stdio.h>
	#include <stdlib.h>
	#include <errno.h>
	#include <inttypes.h>
	#include <unistd.h>
	#include <sys/types.h>
	#include <sys/wait.h>
	#include <libxml/parser.h>
	#include <libxml/tree.h>
	#include "ticket.h"
	#include "log.h"
	#include "attr.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];

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

	if (WIFSIGNALED(rv))
	sprintf(text, "got signal %d", WTERMSIG(rv));
	else
	sprintf(text, "exit code %d", WEXITSTATUS(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)wall_ts(&tk->term_expires),
	(int64_t)tk->current_term);

	rv = system(cmd);
	log_debug("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_debug("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_debug("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 _run_crm_ticket(char *cmd)
	{
	int i, rv;

	/* 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 crm_ticket_set_int(const struct ticket_config tk, const char attr, int64_t val)
	{
	char cmd[COMMAND_MAX];

	snprintf(cmd, COMMAND_MAX,
	"crm_ticket -t '%s' -S '%s' -v %" PRIi64,
	tk->name, attr, val);
	return _run_crm_ticket(cmd);
	}

	static int pcmk_set_attr(struct ticket_config tk, const char attr, const char *val)
	{
	char cmd[COMMAND_MAX];

	snprintf(cmd, COMMAND_MAX,
	"crm_ticket -t '%s' -S '%s' -v '%s'",
	tk->name, attr, val);
	return _run_crm_ticket(cmd);
	}

	static int pcmk_del_attr(struct ticket_config tk, const char attr)
	{
	char cmd[COMMAND_MAX];

	snprintf(cmd, COMMAND_MAX,
	"crm_ticket -t '%s' -D '%s'",
	tk->name, attr);
	return _run_crm_ticket(cmd);
	}


	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_int(tk, "owner", (int32_t)get_node_id(tk->leader));
	rv = crm_ticket_set_int(tk, "expires", wall_ts(&tk->term_expires)) \|\| rv;
	rv = crm_ticket_set_int(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;
	}

	-typedef int (attr_f)(struct ticket_config tk, const char name, char val);
	+typedef int (attr_f)(struct ticket_config tk, const char *name,
	+ const char *val);

	struct attr_tab
	{
	const char *name;
	attr_f handling_f;
	};

	-static int save_expires(struct ticket_config tk, const char name, char *val)
	+static int save_expires(struct ticket_config tk, const char name,
	+ const char *val)
	{
	secs2tv(unwall_ts(atol(val)), &tk->term_expires);
	return 0;
	}

	-static int save_term(struct ticket_config tk, const char name, char *val)
	+static int save_term(struct ticket_config tk, const char name,
	+ const char *val)
	{
	tk->current_term = atol(val);
	return 0;
	}

	-static int parse_boolean(char *val)
	+static int parse_boolean(const char *val)
	{
	long v;

	if (!strncmp(val, "false", 5)) {
	v = 0;
	} else if (!strncmp(val, "true", 4)) {
	v = 1;
	} else {
	v = atol(val);
	}
	return v;
	}

	-static int save_granted(struct ticket_config tk, const char name, char *val)
	+static int save_granted(struct ticket_config tk, const char name,
	+ const char *val)
	{
	tk->is_granted = parse_boolean(val);
	return 0;
	}

	-static int save_owner(struct ticket_config tk, const char name, char *val)
	+static int save_owner(struct ticket_config tk, const char name,
	+ const char *val)
	{
	/* No check, node could have been deconfigured. */
	tk->leader = NULL;
	return !find_site_by_id(atol(val), &tk->leader);
	}

	-static int ignore_attr(struct ticket_config tk, const char name, char *val)
	+static int ignore_attr(struct ticket_config tk, const char name,
	+ const char *val)
	{
	return 0;
	}

	-static int save_attr(struct ticket_config tk, const char name, char *val)
	+static int save_attr(struct ticket_config tk, const char name,
	+ const char *val)
	{
	/* tell store_geo_attr not to store time, we don't have that
	* information available
	*/
	return store_geo_attr(tk, name, val, 1);
	}

	struct attr_tab attr_handlers[] = {
	{ "expires", save_expires},
	{ "term", save_term},
	{ "granted", save_granted},
	{ "owner", save_owner},
	{ "id", ignore_attr},
	{ "last-granted", ignore_attr},
	{ NULL, 0},
	};


	/* get_attr is currently not used and has not been tested
	*/
	static int pcmk_get_attr(struct ticket_config tk, const char attr, const char **vp)
	{
	char cmd[COMMAND_MAX];
	char line[BOOTH_ATTRVAL_LEN+1];
	int rv = 0;
	FILE *p;


	*vp = NULL;
	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, BOOTH_ATTRVAL_LEN, p) == NULL) {
	rv = ENODATA;
	goto out;
	}

	*vp = g_strdup(line);

	out:
	rv = pclose(p);
	if (!rv) {
	log_debug("command \"%s\"", cmd);
	} else if (WEXITSTATUS(rv) == 6) {
	log_info("command \"%s\", ticket not found", cmd);
	} else {
	log_error("command \"%s\" %s", cmd, interpret_rv(rv));
	}
	return rv;
	}

	static int save_attributes(struct ticket_config *tk, xmlDocPtr doc)
	{
	int rv = 0, rc;
	xmlNodePtr n;
	xmlAttrPtr attr;
	xmlChar *v;
	struct attr_tab *atp;

	n = xmlDocGetRootElement(doc);
	if (n == NULL) {
	tk_log_error("crm_ticket xml output empty");
	return -EINVAL;
	}
	if (xmlStrcmp(n->name, (const xmlChar *)"ticket_state")) {
	tk_log_error("crm_ticket xml root element not ticket_state");
	return -EINVAL;
	}
	for (attr = n->properties; attr; attr = attr->next) {
	v = xmlGetProp(n, attr->name);
	for (atp = attr_handlers; atp->name; atp++) {
	- if (!strcmp(atp->name, attr->name)) {
	- rc = atp->handling_f(tk, attr->name, v);
	+ if (!strcmp(atp->name, (const char *) attr->name)) {
	+ rc = atp->handling_f(tk, (const char *) attr->name,
	+ (const char *) v);
	break;
	}
	}
	if (!atp->name) {
	- rc = save_attr(tk, attr->name, v);
	+ rc = save_attr(tk, (const char *) attr->name,
	+ (const char *) v);
	}
	if (rc) {
	tk_log_error("error storing attribute %s", attr->name);
	rv \|= rc;
	}
	xmlFree(v);
	}
	return rv;
	}


	#define CHUNK_SIZE 256

	static int parse_ticket_state(struct ticket_config tk, FILE p)
	{
	int rv = 0;
	GString *input = NULL;
	char line[CHUNK_SIZE];
	xmlDocPtr doc = NULL;
	xmlErrorPtr errptr;
	int opts = XML_PARSE_COMPACT \| XML_PARSE_NONET;

	/* skip first two lines of output */
	if (fgets(line, CHUNK_SIZE-1, p) == NULL \|\| fgets(line, CHUNK_SIZE-1, p) == NULL) {
	tk_log_error("crm_ticket xml output empty");
	rv = ENODATA;
	goto out;
	}
	input = g_string_sized_new(CHUNK_SIZE);
	if (!input) {
	log_error("out of memory");
	rv = -1;
	goto out;
	}
	while (fgets(line, CHUNK_SIZE-1, p) != NULL) {
	if (!g_string_append(input, line)) {
	log_error("out of memory");
	rv = -1;
	goto out;
	}
	}

	- doc = xmlReadDoc(input->str, NULL, NULL, opts);
	+ doc = xmlReadDoc((const xmlChar *) input->str, NULL, NULL, opts);
	if (doc == NULL) {
	errptr = xmlGetLastError();
	if (errptr) {
	tk_log_error("crm_ticket xml parse failed (domain=%d, level=%d, code=%d): %s",
	errptr->domain, errptr->level,
	errptr->code, errptr->message);
	} else {
	tk_log_error("crm_ticket xml parse failed");
	}
	rv = -EINVAL;
	goto out;
	}
	rv = save_attributes(tk, doc);

	out:
	if (doc)
	xmlFreeDoc(doc);
	if (input)
	g_string_free(input, TRUE);
	return rv;
	}

	static int pcmk_load_ticket(struct ticket_config *tk)
	{
	char cmd[COMMAND_MAX];
	int rv = 0, pipe_rv;
	FILE *p;

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

	snprintf(cmd, COMMAND_MAX,
	"crm_ticket -t '%s' -q",
	tk->name);

	p = popen(cmd, "r");
	if (p == NULL) {
	pipe_rv = errno;
	log_error("popen error %d (%s) for \"%s\"",
	pipe_rv, strerror(pipe_rv), cmd);
	return pipe_rv \|\| -EINVAL;
	}

	rv = parse_ticket_state(tk, p);

	if (!tk->leader) {
	/* Hmm, no site found for the ticket we have in the
	* CIB!?
	* Assume that the ticket belonged to us if it was
	* granted here!
	*/
	log_warn("%s: no site matches; site got reconfigured?",
	tk->name);
	if (tk->is_granted) {
	log_warn("%s: granted here, assume it belonged to us",
	tk->name);
	tk->leader = local;
	}
	}

	pipe_rv = pclose(p);
	if (!pipe_rv) {
	log_debug("command \"%s\"", cmd);
	} else if (WEXITSTATUS(pipe_rv) == 6) {
	log_info("command \"%s\", ticket not found", cmd);
	} else {
	log_error("command \"%s\" %s", cmd, interpret_rv(pipe_rv));
	}
	return rv \| pipe_rv;
	}


	struct ticket_handler pcmk_handler = {
	.grant_ticket = pcmk_grant_ticket,
	.revoke_ticket = pcmk_revoke_ticket,
	.load_ticket = pcmk_load_ticket,
	.set_attr = pcmk_set_attr,
	.get_attr = pcmk_get_attr,
	.del_attr = pcmk_del_attr,
	};

File Metadata

Mime Type: text/x-diff
Expires: Sat, Jan 25, 6:26 AM (1 d, 1 h)
Storage Engine: blob
Storage Format: Raw Data
Storage Handle: 1318281
Default Alt Text: (59 KB)

No OneTemporaryActions

View Options

File Metadata

Event Timeline

No OneTemporary
Actions