4 files changed, 814 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..68e3894
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+valgrind-out.txt
+core
+ircxmpp
+.gdb_history
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..13dfd0d
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,26 @@
+DESTDIR=/
+CC = cc
+cflags = -O0 -Wall -I. -Wextra -pedantic -g $(shell pkg-config --cflags libstrophe)
+SRCFILE = main.c
+ldflags = $(shell pkg-config --libs libstrophe) -lircclient
+BINFILE = ircxmpp
+# cflags and ldflags are used so that users specifying CFLAGS and LDFLAGS do not override my flags
+# += is not used, because gcc usually accepts last option, for example -O0 -O2 will use -O2
+.NOTPARALLEL:
+default:
+	$(CC) $(cflags) $(CFLAGS) $(SRCFILE) $(ldflags) $(LDFLAGS) -o$(BINFILE)
+
+install:
+	mkdir -p $(DESTDIR)/usr/bin/
+	cp $(BINFILE) $(DESTDIR)/usr/bin/
+
+distclean:
+	rm $(BINFILE) tmp -rf
+
+clean:
+	rm $(BINFILE) tmp -rf
+
+valgrind:
+	valgrind --leak-check=full --show-leak-kinds=all --track-origins=yes --verbose --log-file=valgrind-out.txt $(COMMAND)
+
+.PHONY: valgrind clean distclean install default
diff --git a/ircxmpp.h b/ircxmpp.h
new file mode 100644
index 0000000..72557e4
--- /dev/null
+++ b/ircxmpp.h
@@ -0,0 +1,195 @@
+#include <libircclient.h>
+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;
+	struct bridge * next;
+	struct bridge * prev;
+	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 {
+	struct bridge * 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;
+};
+void free_bridge (struct bridge **, const char *);
+void free_bridges (struct bridge **);
+struct bridge ** find_bridge (struct bridge **, const char *, enum side);
+void jid2ircnick (char *);
+void jid2ircuser (char *);
+void bridge_forward (const char *, const char *, struct ircxmpp *, enum side);
+int message_handler (xmpp_conn_t * const, xmpp_stanza_t * const, void * const);
+int presence_handler (xmpp_conn_t * const, xmpp_stanza_t * const, void * const);
+void conn_handler (xmpp_conn_t * const, const xmpp_conn_event_t, const int,
+		xmpp_stream_error_t * const, void * const);
+void conn_handler_bridge (xmpp_conn_t * const, const xmpp_conn_event_t, const int,
+		xmpp_stream_error_t * const, void * const);
+// IRC
+void dump_event (irc_session_t *, const char *, const char *, const char **, unsigned);
+void event_connect (irc_session_t *, const char *, const char *, const char **, unsigned);
+void event_connect_control (irc_session_t *, const char *, const char *, const char **, unsigned);
+void event_privmsg (irc_session_t *, const char *, const char *, const char **, unsigned);
+void event_partquit_control (irc_session_t *, const char *, const char *, const char **, unsigned);
+void event_join_control (irc_session_t *, const char *, const char *, const char **, unsigned);
+void event_channel_control (irc_session_t *, const char *, const char *, const char **, unsigned);
+void event_nick_control(irc_session_t *, const char *, const char *, const char **, unsigned);
+void event_topic_control (irc_session_t *, const char *, const char *, const char **, unsigned);
+void event_numeric (irc_session_t *, unsigned int, const char *, const char **, unsigned);
+void event_numeric_control (irc_session_t *, unsigned int, const char *, const char **, unsigned);
+int irc_run_once (struct bridge *);
+void init_irc (struct bridge *);
+void init_irc_control (struct ircxmpp *);
+// /IRC
+int main (int argc, char ** argv);
diff --git a/main.c b/main.c
new file mode 100644
index 0000000..4f3cbad
--- /dev/null
+++ b/main.c
@@ -0,0 +1,589 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <strophe.h>
+#include <ctype.h>
+#include <time.h>
+#include <sys/select.h>
+#include <errno.h>
+#include <signal.h>
+#include "ircxmpp.h"
+void free_bridge (struct bridge ** bridge, const char * razlog) {
+	if (!bridge || !*bridge)
+		return;
+	fprintf(stderr, "freeing bridge with reason: %s\n", razlog);
+	if ((*bridge)->irc) {
+		irc_cmd_quit((*bridge)->irc, razlog);
+		irc_run_once(*bridge); // verjetno je to potrebno, da pošlje quit
+		irc_destroy_session((*bridge)->irc);
+	}
+	if ((*bridge)->conn)
+		xmpp_conn_release((*bridge)->conn); /* graceful disconnect, what is that? */
+	free((*bridge)->identifier);
+	for (size_t i = 0; i < (*bridge)->messages_length; i++)
+		free((*bridge)->messages[i]);
+	free((*bridge)->messages);
+	if ((*bridge)->next)
+		(*bridge)->next->prev = (*bridge)->prev;
+	struct bridge * tofree = *bridge;
+	if ((*bridge)->prev)
+		(*bridge)->prev->next = (*bridge)->next;
+	else
+		*bridge = (*bridge)->next;
+	free(tofree);
+}
+void free_bridges (struct bridge ** bridges) {
+	while (*bridges) // enkrat bo *bridges NULL, ker ne bo nobenega več notri
+		free_bridge(bridges, "vsi mostovi se podirajo, ker se ircxmpp izklaplja");
+}
+
+struct bridge ** find_bridge (struct bridge ** bridges, const char * identifier, enum side side) {
+s:
+	if (!bridges || !*bridges)
+		return NULL;
+	if ((*bridges)->side == side && !strcmp((*bridges)->identifier, identifier))
+		return bridges;
+	bridges = &((*bridges)->next);
+	goto s;
+}
+
+void jid2ircnick (char * jid) { /* edits a jid into an irc-compatible nick. libera trims nicks. */
+	char * c = strchr(jid, '/');
+	if (c) {
+		c++;
+		memmove(jid, c, strlen(c)+1);
+	}
+	if (*jid && isdigit(*jid))
+		*jid = '_';
+#define VALID_NICK "{}[]_^`|\\"
+	while (*++jid != '\0')
+		if (!(isalnum(*jid) || memchr(VALID_NICK, *jid, strlen(VALID_NICK))))
+			*jid = '_';
+}
+void jid2ircuser (char * jid) {
+	char * c = strchr(jid, '/');
+	if (c) {
+		c++;
+		memmove(jid, c, strlen(c)+1);
+	}
+	if (*jid && isdigit(*jid)) {
+		*jid = '_';
+	}
+#define VALID_USER ""
+	while (*++jid != '\0')
+		if (!(isalnum(*jid) || memchr(VALID_USER, *jid, strlen(VALID_USER))))
+			*jid = 'x';
+}
+void bridge_forward (const char * from, const char * msg, struct ircxmpp * ircxmpp, enum side side) {
+	struct bridge ** bridge_resp = find_bridge(&ircxmpp->bridges, from, !side);
+	if (strstr(from, "ircxmpp_") || (ircxmpp->irchost && strstr(from, ircxmpp->irchost)))
+		return;
+	fprintf(stderr, "sending text from %s to %s: %s\n", from, side == IRC ? "IRC" : "XMPP",
+			msg ? msg : "[join only]");
+	struct bridge * bridge;
+	if (!bridge_resp) {
+		bridge = calloc(1, sizeof(struct bridge));
+		if (ircxmpp->bridges)
+			ircxmpp->bridges->prev = bridge;
+		bridge->next = ircxmpp->bridges;
+		ircxmpp->bridges = bridge;
+		bridge->identifier = strdup(from);
+		bridge->ircxmpp = ircxmpp;
+		bridge->side = !side;
+		if (side == IRC)
+			init_irc(bridge);
+		else {
+			bridge->conn = xmpp_conn_new(bridge->ircxmpp->ctx);
+			xmpp_conn_set_jid(bridge->conn, bridge->ircxmpp->jid);
+			xmpp_conn_set_pass(bridge->conn, bridge->ircxmpp->password);
+			xmpp_connect_client(bridge->conn, NULL, 0, conn_handler_bridge, bridge);
+		}
+	} else
+		bridge = *bridge_resp;
+	if (side == IRC) {
+		irc_cmd_join(bridge->irc, ircxmpp->channel, NULL /* password */); /* da smo gotovo joinani */
+		irc_run_once(bridge);
+		if (msg)
+			irc_cmd_msg(bridge->irc, ircxmpp->channel, msg);
+		irc_run_once(bridge);
+	} else if (msg) {
+			bridge->messages = realloc(bridge->messages, bridge->messages_length+1);
+			bridge->messages[bridge->messages_length++] = strdup(msg);
+		}
+} /* msg can be NULL, in that case we only join. */
+int message_handler (xmpp_conn_t * const conn, xmpp_stanza_t * const stanza, void * const userdata) {
+	if (!conn) /* just to get rid of -Wunused-parameter */
+		return 1;
+	struct ircxmpp * ircxmpp = (struct ircxmpp *) userdata;
+	xmpp_stanza_t * body;
+	const char * type;
+	char * intext;
+	body = xmpp_stanza_get_child_by_name(stanza, "body");
+	if (body == NULL)
+		return 1;
+	type = xmpp_stanza_get_type(stanza);
+	if (type != NULL && strcmp(type, "error") == 0)
+		return 1;
+	if (!strncmp(ircxmpp->jid, xmpp_stanza_get_from(stanza), strlen(ircxmpp->jid)))
+		return 1; // this is our message
+	if (xmpp_stanza_get_child_by_name_and_ns(stanza, "delay", "urn:xmpp:delay"))
+		return 1; // MUC MAM history
+	intext = xmpp_stanza_get_text(body);
+	printf("Incoming message from %s: %s\n", xmpp_stanza_get_from(stanza), intext);
+	bridge_forward(xmpp_stanza_get_from(stanza), intext, ircxmpp, IRC);
+	xmpp_free(ircxmpp->ctx, intext);
+	return 1;
+}
+int presence_handler (xmpp_conn_t * const conn, xmpp_stanza_t * const stanza, void * const ud) {
+	struct ircxmpp * ircxmpp = (struct ircxmpp *) ud;
+	if (!conn || !xmpp_stanza_get_from(stanza) || !strchr(xmpp_stanza_get_from(stanza), '/'))
+		return 1;
+	if (xmpp_stanza_get_type(stanza) && !strcmp("unavailable", xmpp_stanza_get_type(stanza))) {
+		fprintf(stderr, "sogovornik %s je zapustil MUC\n", xmpp_stanza_get_from(stanza));
+		free_bridge(find_bridge(&ircxmpp->bridges, xmpp_stanza_get_from(stanza), XMPP),
+				"ircxmpp: sogovornik je zapustil XMPP MUC sobo");
+	}
+	if (!xmpp_stanza_get_type(stanza)) {
+		fprintf(stderr, "sogovornik %s se je pridružil MUC\n", xmpp_stanza_get_from(stanza));
+		bridge_forward(xmpp_stanza_get_from(stanza), NULL, ircxmpp, IRC);
+	}
+	return 1;
+}
+
+void conn_handler (xmpp_conn_t * const conn, const xmpp_conn_event_t status, const int error,
+		xmpp_stream_error_t * const stream_error, void * const userdata) {
+	struct ircxmpp * ircxmpp = (struct ircxmpp *) userdata;
+	if (stream_error) /* just for -Wunused-parameter */
+		fprintf(stderr, "stream_error in conn_handler, error = %d\n", error);
+	if (status == XMPP_CONN_CONNECT) {
+		xmpp_stanza_t * pres;
+		fprintf(stderr, "DEBUG: connected.\n");
+		xmpp_handler_add(conn, message_handler, NULL, "message", NULL, ircxmpp);
+		xmpp_handler_add(conn, presence_handler, NULL, "presence", NULL, ircxmpp);
+		/* Send initial <presence/> so that we appear online to contacts */
+		// pres = xmpp_presence_new(ctx); // somehow send can only be called once?
+		// xmpp_send(conn, pres);
+		// xmpp_stanza_release(pres);
+		pres = xmpp_presence_new(ircxmpp->ctx);	// joining a MUC
+		char b[512];
+		snprintf(b, 512, "%s/ircxmpp_%x", ircxmpp->muc, rand());
+		xmpp_stanza_set_to(pres, b);
+		xmpp_stanza_t * x = xmpp_stanza_new(ircxmpp->ctx);
+		xmpp_stanza_set_name(x, "x");
+		xmpp_stanza_set_ns(x, "http://jabber.org/protocol/muc");
+		xmpp_stanza_add_child(pres, x);
+		xmpp_stanza_release(x);
+		xmpp_send(conn, pres);
+		xmpp_stanza_release(pres);
+	} else {
+		fprintf(stderr, "DEBUG: disconnected\n");
+		// xmpp_stop(ircxmpp->ctx);
+	}
+}
+void conn_handler_bridge (xmpp_conn_t * const conn, const xmpp_conn_event_t status, const int error,
+		xmpp_stream_error_t * const stream_error, void * const userdata) {
+	struct bridge * bridge = (struct bridge *) userdata;
+	if (stream_error) /* just for -Wunused-parameter */
+		fprintf(stderr, "stream_error in conn_handler, error = %d\n", error);
+	if (!conn) /* just for -Wunused-parameter */
+		return;
+	if (status == XMPP_CONN_CONNECT) {
+		char stanzato[512];
+		snprintf(stanzato, 512, "%s/%s ircxmpp_%x", bridge->ircxmpp->muc,
+				bridge->identifier, rand());
+		fprintf(stderr, "joining muc %s (to)\n", stanzato);
+		xmpp_stanza_t * pres = xmpp_presence_new(bridge->ircxmpp->ctx);	// joining a MUC
+		xmpp_stanza_set_to(pres, stanzato);
+		xmpp_stanza_t * x = xmpp_stanza_new(bridge->ircxmpp->ctx);
+		xmpp_stanza_set_name(x, "x");
+		xmpp_stanza_set_ns(x, "http://jabber.org/protocol/muc");
+		xmpp_stanza_add_child(pres, x);
+		xmpp_stanza_release(x);
+		xmpp_send(bridge->conn, pres);
+		xmpp_stanza_release(pres);
+		/* xmpp_stanza_t * pres;
+		fprintf(stderr, "DEBUG: connected.\n");
+		xmpp_handler_add(conn, message_handler, NULL, "message", NULL, bridge);
+		xmpp_handler_add(conn, presence_handler, NULL, "presence", NULL, bridge);
+		// Send initial <presence/> so that we appear online to contacts
+		// pres = xmpp_presence_new(ctx); // somehow send can only be called once?
+		// xmpp_send(conn, pres);
+		// xmpp_stanza_release(pres);
+		pres = xmpp_presence_new(bridge->ircxmpp->ctx);	// joining a MUC
+		char b[512];
+		bridge->identifier();
+		snprintf(b, 512, "%s/ircxmpp_%x", ircxmpp->muc, rand());
+		xmpp_stanza_set_to(pres, b);
+		xmpp_stanza_t * x = xmpp_stanza_new(ircxmpp->ctx);
+		xmpp_stanza_set_name(x, "x");
+		xmpp_stanza_set_ns(x, "http://jabber.org/protocol/muc");
+		xmpp_stanza_add_child(pres, x);
+		xmpp_stanza_release(x);
+		xmpp_send(conn, pres);
+		xmpp_stanza_release(pres);
+		*/
+	} else {
+		fprintf(stderr, "DEBUG: disconnected\n");
+		// xmpp_stop(ircxmpp->ctx);
+	}
+
+}
+
+/* IRC */
+void dump_event (irc_session_t * s, const char * e, const char * o, const char ** p, unsigned c) {
+	if (!s) /* just for -Wunused-parameter */
+		return;
+	fprintf(stderr, "Event %s, origin %s, params %d [", e, o ? o : "NULL", c);
+	for (unsigned int i = 0; i < c; i++) {
+		if (i)
+			fprintf(stderr, "|");
+		fprintf(stderr, p[i]);
+	}
+	fprintf(stderr, "]\n");
+}
+void event_connect (irc_session_t * s, const char * e, const char * o, const char ** p, unsigned c) {
+	dump_event(s, e, o, p, c);
+	struct bridge * bridge = (struct bridge *) irc_get_ctx(s);
+	irc_cmd_join(s, bridge->ircxmpp->channel, NULL /* password */);
+}
+void event_connect_control (irc_session_t * s, const char * e, const char * o, const char ** p,
+		unsigned c) {
+	dump_event(s, e, o, p, c);
+	struct ircxmpp * ircxmpp = (struct ircxmpp *) irc_get_ctx(s);
+	irc_cmd_join(s, ircxmpp->channel, NULL);
+}
+void event_privmsg (irc_session_t * s, const char * e, const char * o, const char ** p, unsigned c) {
+	dump_event(s, e, o, p, c); /* SAME FOR _control. do NOT use irc_get_ctx here!!! */
+	char nickbuf[512];
+	irc_target_get_nick(o, nickbuf, sizeof(nickbuf));
+	irc_cmd_msg(s, nickbuf, "ircxmpp (še) ne podpira zasebnih sporočil xmpp uporabnikom. ircxmpp se razvija na http://git.sijanec.eu/sijanec/ircxmpp/.");
+}
+void event_partquit_control (irc_session_t * s, const char * e, const char * o, const char ** p,
+		unsigned c) {
+	dump_event(s, e, o, p, c);
+	struct ircxmpp * ircxmpp = (struct ircxmpp *) irc_get_ctx(s);
+	struct bridge ** bridge = find_bridge(&ircxmpp->bridges, o /* indeed n!u@h */, IRC);
+	free_bridge(bridge, "part or quit from irc");
+} /* part and quit events */
+void event_channel_control (irc_session_t * s, const char * e, const char * o, const char ** p,
+		unsigned c) {
+	dump_event(s, e, o, p, c);		/* o je avtor, p[0] je kanal p[1] je besedilo */
+	if (c != 2) /* no message text */
+		return;
+	struct ircxmpp * ircxmpp = (struct ircxmpp *) irc_get_ctx(s);
+	bridge_forward(o /* indeed n!u@h */, p[1], ircxmpp, XMPP);
+}
+void event_join_control (irc_session_t * s, const char * e, const char * o, const char ** p,
+		unsigned c) {
+	dump_event(s, e, o, p, c);
+	struct ircxmpp * ircxmpp = (struct ircxmpp *) irc_get_ctx(s);
+	char buf[512];
+	strncpy(buf, o, 512-1);
+	buf[511] = '\0';
+	if (!strlen(buf))
+		strcpy(buf, "a");
+	char * cp = strchr(buf, '!');
+	if (cp)
+		*cp = '\0';
+	else
+		cp = buf;
+	if (ircxmpp->ircnick && !strcmp(buf, ircxmpp->ircnick)) {
+		cp = strchr(++cp, '@');
+		if (cp) {
+			free(ircxmpp->irchost);
+			ircxmpp->irchost = strdup(++cp);
+			fprintf(stderr, "FOUND OUR HOSTNAME: %s\n", ircxmpp->irchost);
+		}
+	}
+	bridge_forward(o /* indeed n!u@h */, NULL, ircxmpp, XMPP);
+}
+void event_nick_control (irc_session_t * s, const char * e, const char * o, const char ** p,
+		unsigned c) {
+	dump_event(s, e, o, p, c);	/* o je originalen nick, p[0] je nov nick */
+	struct ircxmpp * ircxmpp = (struct ircxmpp *) irc_get_ctx(s);
+	struct bridge ** bridge = find_bridge(&ircxmpp->bridges, o /* indeed n!u@h */, IRC);
+	if (!bridge || !*bridge)
+		return;
+	free_bridge(bridge, "nick change from irc");
+	bridge_forward(o, NULL, ircxmpp, XMPP); /* and now connect */
+}
+void event_topic_control (irc_session_t * s, const char * e, const char * o, const char ** p,
+		unsigned c) {
+	dump_event(s, e, o, p, c);	/* o je avtor, p[0] je kanal, p[1] je nova tema/zadeva */
+} /* TODO */
+void event_numeric (irc_session_t * s, unsigned int e, const char * o, const char ** p, unsigned c) {
+	char b[512];
+	struct bridge * bridge = (struct bridge *) irc_get_ctx(s);
+	sprintf(b, "%d", e);
+	dump_event(s, b, o, p, c);
+	switch (e) {
+		case ERR_NONICKNAMEGIVEN:
+		case ERR_ERRONEUSNICKNAME:
+		case ERR_NICKNAMEINUSE:
+		case ERR_NICKCOLLISION:
+			strncpy(b, bridge->identifier, sizeof(b));
+			b[511] = '\0';
+			jid2ircnick(b);	/* RFC 1495 says that nicks are at least 9 characters */
+			if (strlen(b))
+				sprintf(strlen(b) >= 7 ? b+7 : b+strlen(b), "_%x", rand());
+			else
+				sprintf(b, "xmpp_%x", rand());
+			irc_cmd_nick(s, b);
+			break;
+	}
+}
+void event_numeric_control (irc_session_t * s, unsigned int e, const char * o, const char ** p,
+		unsigned c) {
+	char b[512];
+	struct ircxmpp * ircxmpp = (struct ircxmpp *) irc_get_ctx(s);
+	sprintf(b, "%d", e);
+	dump_event(s, b, o, p, c);
+	switch (e) {
+		case ERR_NONICKNAMEGIVEN:
+		case ERR_ERRONEUSNICKNAME:
+		case ERR_NICKNAMEINUSE:
+		case ERR_NICKCOLLISION:
+			sprintf(b, "ircxmpp%X", rand());
+			free(ircxmpp->ircnick);
+			ircxmpp->ircnick = strdup(b);
+			irc_cmd_nick(s, b);
+			break;
+	}
+}
+int irc_run_once (struct bridge * bridge) { /* returns nonzero if connection failed (dropped brid) */
+	if (!irc_is_connected(bridge->irc)) {
+		char b[512], u[512];
+		strncpy(b, bridge->identifier, sizeof(b)-1);
+		b[511] = '\0';
+		strcpy(u, b);
+		jid2ircnick(b);
+		jid2ircuser(u);
+		if (!strlen(b))
+			sprintf(b, "xmpp_%x", rand());
+		if (!strlen(u))
+			strcpy(u, "ircxmpp");
+		fprintf(stderr, "CONNECTING bridge %s!%s@host\n", b, u);
+		if (irc_connect(bridge->irc, bridge->ircxmpp->hostname, bridge->ircxmpp->port,
+					NULL, b, u, bridge->identifier)) {
+			fprintf(stderr, "could not connect: %s\n",
+					irc_strerror(irc_errno(bridge->irc)));
+			return 1;
+		}
+	}
+	struct timeval tv;
+	fd_set in_set, out_set;
+	int maxfd = 0;
+	tv.tv_usec = 0; /* polling */
+	tv.tv_sec = 0;
+	FD_ZERO(&in_set);
+	FD_ZERO(&out_set);
+	irc_add_select_descriptors(bridge->irc, &in_set, &out_set, &maxfd);
+	if (select(maxfd+1, &in_set, &out_set, NULL, &tv) < 0) {
+		if (errno == EINTR)
+			return 0;
+		fprintf(stderr, "SELECT failed in bridge!\n");
+		return 1;
+	}
+	if (irc_process_select_descriptors(bridge->irc, &in_set, &out_set)) {
+		fprintf(stderr, "PROCESS_SELECT failed in bridge!\n");
+		return 1;
+	}
+	return 0;
+}
+int irc_run_once_control (struct ircxmpp * ircxmpp) { /* returns nonzero if failed (dropped conne) */
+	if (!irc_is_connected(ircxmpp->irc)) {
+		char b[512];
+		sprintf(b, "ircxmpp_%X", rand());
+		fprintf(stderr, "CONNECTING control %s!ircxmpp@host\n", b);
+		free(ircxmpp->ircnick);
+		ircxmpp->ircnick = strdup(b);
+		if (irc_connect(ircxmpp->irc, ircxmpp->hostname, ircxmpp->port,
+					NULL, b, "ircxmpp", "http://git.sijanec.eu/sijanec/ircxmpp")) {
+			fprintf(stderr, "could not connect: %s\n",
+					irc_strerror(irc_errno(ircxmpp->irc)));
+			return 1;
+		}
+	}
+	struct timeval tv;
+	fd_set in_set, out_set;
+	int maxfd = 0;
+	tv.tv_usec = 0; /* polling */
+	tv.tv_sec = 0;
+	FD_ZERO(&in_set);
+	FD_ZERO(&out_set);
+	irc_add_select_descriptors(ircxmpp->irc, &in_set, &out_set, &maxfd);
+	if (select(maxfd+1, &in_set, &out_set, NULL, &tv) < 0) {
+		if (errno == EINTR)
+			return 0;
+		return 1;
+	}
+	if (irc_process_select_descriptors(ircxmpp->irc, &in_set, &out_set))
+		return 1;
+	return 0;
+}
+void init_irc (struct bridge * bridge) {
+	irc_callbacks_t callbacks;
+	irc_session_t * s;
+	memset(&callbacks, 0, sizeof(callbacks));
+	callbacks.event_connect = event_connect;
+	callbacks.event_nick = dump_event;
+	callbacks.event_quit = dump_event;
+	callbacks.event_join = dump_event;
+	callbacks.event_part = dump_event;
+	callbacks.event_mode = dump_event;
+	callbacks.event_umode = dump_event;
+	callbacks.event_topic = dump_event;
+	callbacks.event_kick = dump_event;
+	callbacks.event_channel = dump_event;
+	callbacks.event_privmsg = event_privmsg;
+	callbacks.event_notice = dump_event;
+	callbacks.event_channel_notice = dump_event;
+	callbacks.event_invite = dump_event;
+	callbacks.event_ctcp_req = dump_event;
+	callbacks.event_ctcp_rep = dump_event;
+	callbacks.event_ctcp_action = dump_event;
+	callbacks.event_unknown = dump_event;
+	callbacks.event_numeric = event_numeric;
+	// callbacks.event_dcc_chat_req = dump_event;
+	// callbacks.event_dcc_send_req = dump_event;
+	if (!(s = irc_create_session(&callbacks))) {
+		fprintf(stderr, "could not create IRC session!\n");
+		return;
+	}
+	bridge->irc = s;
+	irc_set_ctx(s, bridge);
+	irc_run_once(bridge);
+	return;
+}
+void init_irc_control (struct ircxmpp * ircxmpp) {
+	irc_callbacks_t callbacks;
+	irc_session_t * s;
+	memset(&callbacks, 0, sizeof(callbacks));
+	callbacks.event_connect = event_connect_control;
+	callbacks.event_nick = event_nick_control;
+	callbacks.event_quit = event_partquit_control;
+	callbacks.event_join = event_join_control;
+	callbacks.event_part = event_partquit_control;
+	callbacks.event_mode = dump_event;
+	callbacks.event_umode = dump_event;
+	callbacks.event_topic = event_topic_control;
+	callbacks.event_kick = dump_event;
+	callbacks.event_channel = event_channel_control;
+	callbacks.event_privmsg = event_privmsg;
+	callbacks.event_notice = dump_event;
+	callbacks.event_channel_notice = dump_event;
+	callbacks.event_invite = dump_event;
+	callbacks.event_ctcp_req = dump_event;
+	callbacks.event_ctcp_rep = dump_event;
+	callbacks.event_ctcp_action = dump_event;
+	callbacks.event_unknown = dump_event;
+	callbacks.event_numeric = event_numeric_control;
+	// callbacks.event_dcc_chat_req = dump_event;
+	// callbacks.event_dcc_send_req = dump_event;
+	if (!(s = irc_create_session(&callbacks))) {
+		fprintf(stderr, "could not create IRC control session!\n");
+		return;
+	}
+	ircxmpp->irc = s;
+	irc_set_ctx(s, ircxmpp);
+	irc_run_once_control(ircxmpp);
+	return;
+}
+/* /IRC */ /* irc_is_connected(irc_session_t * session): 1 ali 0 */ /* TODO: if nick is used */
+int shouldexit = 0;
+void signalhandler (int s) {
+	shouldexit += s+1; /* only for -Wunused-parameter */
+}
+int main (int argc, char ** argv) {
+	srand(time(NULL));
+	struct ircxmpp ircxmpp;
+	memset(&ircxmpp, '\0', sizeof(ircxmpp));
+	xmpp_log_t *log;
+	if (argc != 1+6) {
+		fprintf(stderr, "Usage: ircxmpp <jid> <pass> <hostname> <port> <channel> <muc>\n");
+		return 1;
+	}
+	ircxmpp.jid = argv[1];
+	ircxmpp.password = argv[2];
+	ircxmpp.hostname = argv[3];
+	ircxmpp.port = atoi(argv[4]);
+	ircxmpp.channel = argv[5];
+	ircxmpp.muc = argv[6];
+	xmpp_initialize();
+	log = xmpp_get_default_logger(XMPP_LEVEL_DEBUG);
+	init_irc_control(&ircxmpp);
+c:
+	ircxmpp.ctx = xmpp_ctx_new(NULL, log);
+	ircxmpp.conn = xmpp_conn_new(ircxmpp.ctx);
+	xmpp_conn_set_jid(ircxmpp.conn, ircxmpp.jid);
+	xmpp_conn_set_pass(ircxmpp.conn, ircxmpp.password);
+	xmpp_connect_client(ircxmpp.conn, NULL, 0, conn_handler, &ircxmpp);
+	signal(SIGTERM, signalhandler);
+	signal(SIGINT, signalhandler);
+	// signal(SIGPIPE, SIG_IGN);
+	while (!shouldexit) { /* TEH EVENT LOOP */
+		xmpp_conn_is_disconnected(ircxmpp.conn);
+		xmpp_run_once(ircxmpp.ctx, 1);
+		struct bridge ** bridge = &ircxmpp.bridges;
+		while (*bridge) {
+			struct bridge ** next = &((*bridge)->next);
+			if ((*bridge)->irc && irc_run_once(*bridge)) {
+				free_bridge(bridge, "irc connection dropped");
+				goto cont;
+			}
+			if ((*bridge)->conn)
+				xmpp_run_once(xmpp_conn_get_context((*bridge)->conn), 1);
+			if ((*bridge)->conn && !xmpp_conn_is_connected((*bridge)->conn)
+					&& !xmpp_conn_is_connecting(((*bridge)->conn))) {
+				if ((*bridge)->side == IRC) {
+					fprintf(stderr, "RECONNECTING BRIDGE BECAUSE IT DIED!");
+					xmpp_connect_client((*bridge)->conn, NULL, 0,
+							conn_handler_bridge, *bridge);
+				} else
+					free_bridge(bridge, "xmpp connection dropped");
+				goto cont;
+			}
+			while ((*bridge)->conn && xmpp_conn_is_connected((*bridge)->conn)
+					&& (*bridge)->messages_length
+					&& xmpp_conn_get_bound_jid((*bridge)->conn)) {
+				char id[64];
+				fprintf(stderr, "sending xmpp msg from %s\n", (*bridge)->identifier);
+				sprintf(id, "ircxmpp-%x", rand());
+				xmpp_stanza_t * stan = xmpp_message_new((*bridge)->ircxmpp->ctx,
+						"groupchat", (*bridge)->ircxmpp->muc, id);
+				xmpp_message_set_body(stan,
+						(*bridge)->messages[(*bridge)->messages_length-1]);
+				xmpp_stanza_set_from(stan, xmpp_conn_get_bound_jid((*bridge)->conn));
+				xmpp_send((*bridge)->conn, stan);
+				xmpp_stanza_release(stan);
+				free((*bridge)->messages[--(*bridge)->messages_length]);
+			}
+cont:
+			bridge = next;
+		}
+		if (!xmpp_conn_is_connected(ircxmpp.conn) && !xmpp_conn_is_connecting(ircxmpp.conn)){
+			fprintf(stderr, "XMPP control DISCONNECTED! RECONNECTING!\n");
+			xmpp_conn_release(ircxmpp.conn);
+			xmpp_ctx_free(ircxmpp.ctx);
+			goto c;
+		}
+		if (irc_run_once_control(&ircxmpp)) {
+			fprintf(stderr, "IRC control DISCONNECTED! RECONNECTING!\n");
+			irc_destroy_session(ircxmpp.irc);
+			init_irc_control(&ircxmpp);
+		}
+		struct timespec ts = {
+			.tv_sec = 0,
+			.tv_nsec = 1e8 /* 0.1s per event loop */
+		};
+		nanosleep(&ts, NULL);
+	}
+	fprintf(stderr, "signal received, cleaning up!\n");
+	free_bridges(&ircxmpp.bridges);
+	xmpp_conn_release(ircxmpp.conn);
+	xmpp_ctx_free(ircxmpp.ctx);
+	xmpp_shutdown();
+	free(ircxmpp.ircnick);
+	free(ircxmpp.irchost);
+	return 0;
+}