#define IX_S0(x) (x ? x : "")
enum ircxmpp_loglevel {
	IRCXMPP_DEBUG,
	IRCXMPP_INFO,
	IRCXMPP_WARN,
	IRCXMPP_ERROR
};
typedef void (* ircxmpp_logger)
	(void * const, const enum ircxmpp_loglevel, const char * const, const char * const);
typedef void (* ircxmpp_domain_setter) (void *, const char *);
#ifdef IX_LIB /* do not use functions until #endif in programs that use libircxmpp. */
#include <libircclient.h>	/* do not use members of struct ircxmpp, use opaque ircxmpp type! */
#include <strophe.h>
#include <math.h>
#define ISA(type, name) type * name; size_t name##_sizeof; size_t name##_length
#define ALLOC_CHUNK 1	// \\ note: this ISA is array of type not array of type *
#define REALLOC_K 1.5
#define BIGGER_ARRAY(name) do { \
		name = realloc(name, sizeof(name[0])*ceil(name##_sizeof*REALLOC_K)); \
		for (int BA = name##_sizeof; BA < ceil(name##_sizeof*REALLOC_K); BA++) \
			name[BA] = NULL; \
		name##_sizeof = ceil(name##_sizeof*REALLOC_K); \
	} while (0)
#define MR(n) if (n##_sizeof <= n##_length) /* make room */ \
	BIGGER_ARRAY(n)
enum irc_numeric { /* numerics from rfc 1459 */
	ERR_NOSUCHNICK = 401,
	ERR_NOSUCHSERVER,
	ERR_NOSUCHCHANNEL,
	ERR_CANNOTSENDTOCHAN,
	ERR_TOOMANYCHANNELS,
	ERR_WASNOSUCHNICK,
	ERR_TOOMANYTARGETS,
	ERR_NOORIGIN = 409,
	ERR_NORECIPIENT = 411,
	ERR_NOTEXTTOSEND,
	ERR_NOTOPLEVEL,
	ERR_WILDTOPLEVEL,
	ERR_UNKNOWNCOMMAND = 421,
	ERR_NOMOTD,
	ERR_NOADMININFO,
	ERR_FILEERROR,
	ERR_NONICKNAMEGIVEN = 431,
	ERR_ERRONEUSNICKNAME,
	ERR_NICKNAMEINUSE,
	ERR_NICKCOLLISION = 436,
	ERR_USERNOTINCHANNEL = 441,
	ERR_NOTONCHANNEL,
	ERR_USERONCHANNEL,
	ERR_NOLOGIN,
	ERR_SUMMONDISABLED,
	ERR_USERDISABLED,
	ERR_NOTREGISTERED = 451,
	ERR_NEEDMOREPARAMS = 461,
	ERR_ALREADYREGISTERED,
	ERR_NOPERMFORHOST,
	ERR_PASSWDMISMATCH,
	ERR_YOUREBANNEDCREEP,
	ERR_KEYSET = 467,
	ERR_CHANNELISFULL = 471,
	ERR_UNKNOWNMODE,
	ERR_INVITEONLYCHAN,
	ERR_BANNEDFROMCHAN,
	ERR_BADCHANNELKEY,
	ERR_NOPRIVILEGES = 481,
	ERR_CHANOPRIVSNEEDED,
	ERR_CANTKILLSERVER,
	ERR_NOOPERHOST = 491,
	ERR_UMODEUNKNOWNFLAG = 501,
	ERR_USERSDONTMATCH,
	RPL_NONE = 300,
	RPL_AWAY,
	RPL_USERHOST,
	RPL_ISON,
	RPL_UNAWAY,
	RPL_NOWAWAY,
	RPL_WHOISUSER = 311,
	RPL_WHOISSERVER,
	RPL_WHOISOPERATOR,
	RPL_WHOISIDLE = 317,
	RPL_ENDOFWHOIS,
	RPL_WHOISCHANNELS,
	RPL_WHOWASUSER = 314,
	RPL_ENDOFWHOWAS = 369,
	RPL_LISTSTART = 321,
	RPL_LIST,
	RPL_LISTEND,
	RPL_CHANNELMODEIS,
	RPL_NOTOPIC = 331,
	RPL_TOPIC,
	RPL_INVITING = 341,
	RPL_SUMMONING = 342,
	RPL_VERSION = 351,
	RPL_WHOREPLY = 352,
	RPL_ENDOFWHO = 315,
	RPL_NAMREPLY = 353,
	RPL_ENDOFNAMES = 366,
	RPL_LINKS = 364,
	RPL_ENDOFLINKS,
	RPL_BANLIST = 367,
	RPL_ENDOFBANLIST,
	RPL_INFO = 371,
	RPL_ENDOFINFO = 374,
	RPL_MOTDSTART,
	RPL_MOTD = 372,
	RPL_ENDOFMOTD = 376,
	RPL_YOUREOPER = 381,
	RPL_REHASHING = 382,
	RPL_TIME = 391,
	RPL_USERSSTART,
	RPL_USERS,
	RPL_ENDOFUSERS,
	RPL_NOUSERS,
	RPL_TRACELINK = 200,
	RPL_TRACECONNECTING,
	RPL_TRACEHANDSHAKE,
	RPL_TRACEUNKNOWN,
	RPL_TRACEOPERATOR,
	RPL_TRACEUSER,
	RPL_TRACESERVER,
	RPL_TRACENEWTYPE = 208,
	RPL_TRACELOG = 261,
	RPL_STATSLINKINFO = 211,
	RPL_STATSCOMMANDS,
	RPL_STATSCLINE,
	RPL_STATSNLINE,
	RPL_STATSILINE,
	RPL_STATSKLINE,
	RPL_STATSYLINE = 218,
	RPL_ENDOFSTATS,
	RPL_STATSLLINE = 241,
	RPL_STATSUPTIME,
	RPL_STATSOLINE,
	RPL_STATSHLINE,
	RPL_UMODEIS = 221,
	RPL_LUSERCLIENT = 251,
	RPL_LUSEROP,
	RPL_LUSERUNKNOWN,
	RPL_LUSERCHANNELS,
	RPL_LUSERME,
	RPL_ADMINME,
	RPL_ADMINLOC1,
	RPL_ADMINLOC2,
	RPL_ADMINEMAIL,
	RPL_TRACECLASS = 209,
	RPL_SERVICEINFO = 231,
	RPL_SERVICE = 233,
	RPL_SERVLISTEND = 235,
	RPL_WHOISCHANOP = 316,
	RPL_CLOSING = 362,
	RPL_INFOSTART = 373,
	ERR_YOUWILLBEBANNED = 466,
	ERR_NOSERVICEHOST = 492,
	RPL_STATSQLINE = 217,
	RPL_ENDOFSERVICES = 232,
	RPL_SERVLIST = 234,
	RPL_KILLDONE = 361,
	RPL_CLOSEEND = 363,
	RPL_MYPORTIS = 384,
	ERR_BADCHANMASK = 476
};
enum side {
	IRC,
	XMPP
};
struct bridge {	// xmpp connection is the same for every user, only IRC connection differs
	struct ircxmpp * ircxmpp;
	char * identifier; /* jid if side is XMPP or nickname if side is IRC */
	irc_session_t * irc;
	xmpp_conn_t * conn; /* isti xmpp_ctx_t ima lahko več connov */
	enum side side; /* which side is the real user */
	size_t messages_length;
	char ** messages;
};
struct ircxmpp {
	void * bridges;
	irc_session_t * irc;
	char * ircnick;
	char * irchost;
	xmpp_ctx_t * ctx;
	xmpp_conn_t * conn;
	char * jid;
	char * password;
	char * hostname;
	int port;
	char * channel;
	char * muc;
	char * channel_password;
	void * log_userdata;
	ircxmpp_logger log_handler;
	xmpp_log_t xmpp_logger;
	ircxmpp_domain_setter domain_setter;
	void * domain_setter_userdata;
	char * domain;
	ISA(struct bridge *, to_free_bridges);
	ISA(char *, to_free_reasons); // static reason strings, do not free them
};
static void send_xmpp_logs_to_me (
		void * const, const xmpp_log_level_t, const char * const, const char * const);
static void logwrite (struct ircxmpp *, enum ircxmpp_loglevel, const char *, int,
		const char *, const char *, ...);
static int bridge_compare (const void *, const void *);
static void free_bridge (struct bridge *, const char *);
static void free_bridges (void **);
static void free_bridge_from_tdestroy (void *);
static struct bridge * find_bridge (void **, const char *, enum side);
static void jid2ircnick (char *);
static void jid2ircuser (char *);
static void bridge_forward (const char *, const char *, struct ircxmpp *, enum side);
static int message_handler (xmpp_conn_t * const, xmpp_stanza_t * const, void * const);
static int presence_handler (xmpp_conn_t * const, xmpp_stanza_t * const, void * const);
static void conn_handler (xmpp_conn_t * const, const xmpp_conn_event_t, const int,
		xmpp_stream_error_t * const, void * const);
static void conn_handler_bridge (xmpp_conn_t * const, const xmpp_conn_event_t, const int,
		xmpp_stream_error_t * const, void * const);
// IRC
static void dump_event_control (
		irc_session_t *, const char *, const char *, const char **, unsigned);
static void dump_event (irc_session_t *, const char *, const char *, const char **, unsigned);
static void event_connect (irc_session_t *, const char *, const char *, const char **, unsigned);
static void event_connect_control (
		irc_session_t *, const char *, const char *, const char **, unsigned);
static void event_privmsg (irc_session_t *, const char *, const char *, const char **, unsigned);
static void event_partquit_control (
		irc_session_t *, const char *, const char *, const char **, unsigned);
static void event_join_control (
		irc_session_t *, const char *, const char *, const char **, unsigned);
static void event_channel_control (
		irc_session_t *, const char *, const char *, const char **, unsigned);
static void event_nick_control(irc_session_t *, const char *, const char *, const char **, unsigned);
static void event_topic_control (
		irc_session_t *, const char *, const char *, const char **, unsigned);
static void event_numeric (
		irc_session_t *, unsigned int, const char *, const char **, unsigned);
static void event_numeric_control (
		irc_session_t *, unsigned int, const char *, const char **, unsigned);
static int irc_run_once (struct bridge *);
static void init_irc (struct bridge *);
static void init_irc_control (struct ircxmpp *);
// /IRC
static void obdelaj_bridge (const void *, VISIT, int);
static void default_log_handler (
		void * const, const enum ircxmpp_loglevel, const char * const, const char * const);
static void default_domain_setter (void *, const char *);
#endif // IX_LIB
// ZUNANJE
typedef struct ircxmpp ircxmpp; /* opaque handle */
ircxmpp * ircxmpp_init (void);
void ircxmpp_set_log_handler (ircxmpp *, ircxmpp_logger);
void ircxmpp_set_log_userdata (ircxmpp *, void *);
void ircxmpp_set_jid (ircxmpp *, const char *);
void ircxmpp_set_password (ircxmpp *, const char *);
void ircxmpp_set_hostname (ircxmpp *, const char *);
void ircxmpp_set_port (ircxmpp *, unsigned short int);
void ircxmpp_set_channel (ircxmpp *, const char *);
void ircxmpp_set_muc (ircxmpp *, const char *);
void ircxmpp_set_channel_password (ircxmpp *, const char *);
void ircxmpp_set_domain_setter (ircxmpp *, ircxmpp_domain_setter);
void ircxmpp_set_domain_setter_userdata (ircxmpp *, void *);
void ircxmpp_set_domain (ircxmpp *, const char *);
void ircxmpp_run_once (ircxmpp *);
void ircxmpp_free (ircxmpp *);
// /ZUNANJE