ii

commit 2fec6ab70dfe1108ed1d0c20465922e237c38f2f
Author: garbeam@wmii.de <unknown>
Date:   Mon, 19 Dec 2005 15:39:54 +0200

added initial files

Diffstat:
A
FAQ
 | 
19
+++++++++++++++++++
A
LICENSE
 | 
22
++++++++++++++++++++++
A
Makefile
 | 
48
++++++++++++++++++++++++++++++++++++++++++++++++
A
README
 | 
46
++++++++++++++++++++++++++++++++++++++++++++++
A
config.mk
 | 
18
++++++++++++++++++
A
ii.1
 | 
95
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
A
ii.c
 | 
484
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

7 files changed, 732 insertions(+), 0 deletions(-)
diff --git a/FAQ b/FAQ
@@ -0,0 +1,19 @@
+FAQ
+
+Where is IRC command xy (ignore etc.)?
+--------------------------------------
+ii is for advanced users, please use standard tools like awk, sed and grep for
+this. This can be done easily and will not bloat the code.
+
+Where is a graphical interface? 
+-------------------------------
+Basically ii follows the UNIX philosophie so it is only file based. But it
+should be easy to build different interface because they only have to handle
+the FIFOs and output files. Feel free to implement or wait until we have done
+this.
+
+Which commands are supported?
+ -----------------------------
+j (join), t (topic), a (away), m (msg), n (nick), l (leave). The missing are
+obsolete or can be easily used by typing the IRC commands itself (i.e. /WHO
+instead of /who).
diff --git a/LICENSE b/LICENSE
@@ -0,0 +1,22 @@
+MIT/X Consortium License
+
+(C)opyright MMV Anselm R. Garbe <garbeam@wmii.de>
+(C)opyright MMV Nico Golde <nico at ngolde dot de>
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
diff --git a/Makefile b/Makefile
@@ -0,0 +1,48 @@
+# ii - irc it - simple but flexible IRC client
+#   (C)opyright MMV Anselm R. Garbe, Nico Golde
+
+include config.mk
+
+SRC      = ii.c
+OBJ      = ${SRC:.c=.o}
+
+all: options ii
+	@echo built ii
+
+options:
+	@echo ii build options:
+	@echo "LIBS     = ${LIBS}"
+	@echo "INCLUDES = ${INCLUDES}"
+	@echo "CFLAGS   = ${CFLAGS}"
+	@echo "LDFLAGS  = ${LDFLAGS}"
+	@echo "CC       = ${CC}"
+
+.c.o:
+	@echo CC $<
+	@${CC} -c ${CFLAGS} $<
+
+dist: clean
+	@mkdir -p ii-${VERSION}
+	@cp -R Makefile README FAQ LICENSE config.mk ii.c ii.1 ii-${VERSION}
+	@tar -cf ii-${VERSION}.tar ii-${VERSION}
+	@gzip ii-${VERSION}.tar
+	@rm -rf ii-${VERSION}
+	@echo created distribution ii-${VERSION}.tar.gz
+
+ii: ${OBJ}
+	@echo LD $@
+	@${CC} -o $@ ${OBJ} ${LDFLAGS}
+
+install: all
+	@cp ii ${DESTDIR}${PREFIX}/bin
+	@chmod 775 ${DESTDIR}${PREFIX}/bin/ii
+	@cp ii.1 ${DESTDIR}${MANPREFIX}/man1
+	@chmod 444 ${DESTDIR}${MANPREFIX}/man1/ii.1
+	@echo "installed ii"
+
+uninstall: all
+	rm -f ${DESTDIR}${MANPREFIX}/man1/ii.1
+	rm -f ${DESTDIR}${PREFIX}/bin/ii
+
+clean:
+	rm -f ii *~ *.o *core
diff --git a/README b/README
@@ -0,0 +1,46 @@
+Abstract
+--------
+ii is a minimalistic FIFO and filesystem based IRC client.
+It creates an irc directory tree with server, channel and
+nick name directories.
+In every directory a FIFO file (in) and and normal file (out)
+is placed.
+The in file is used to communicate with the servers and the out
+files includes the server messages. For every channel and every nick
+name there will be new in and out files.
+The basic idea of this is to be able to communicate with an IRC
+server with basic command line tools.
+For example if you will join a channel just do echo "/j #channel" > in
+and ii creates a new channel directory with in and out file.
+
+Installation
+------------
+Edit config.mk to match your local setup. ii is installed into
+/usr/local by default.
+
+Afterwards enter the following command to build and install ii (if
+necessary as root):
+
+    $ make clean install
+
+Running ii
+------------
+Simply invoke the 'ii' command with required arguments
+
+To make ii a bit more comfortable use it in combination with the multitail
+program and for example with vim. Run vim in the server directory and use
+key mapping like:
+map w1 :.w >> \#ii/in<cr>
+map w2 :.w >> \#wmii/in<cr>
+to post to channels. Thanks to Matthias Kopfermann for this hint.
+
+Configuration
+-------------
+No configuration is needed.
+
+Contact
+-------
+If you want to contact the developers just write a mail to
+ii (at) modprobe (dot) de
+
+--Nico Golde, Anselm R. Garbe
diff --git a/config.mk b/config.mk
@@ -0,0 +1,18 @@
+# Customize to fit your system
+
+# paths
+PREFIX      = /usr/local
+MANPREFIX   = ${PREFIX}/share/man
+
+INCDIR      = ${PREFIX}/include
+LIBDIR      = ${PREFIX}/lib
+VERSION     = 1-rc1
+
+# includes and libs
+INCLUDES    = -I. -I${INCDIR} -I/usr/include
+LIBS        = -L${LIBDIR} -L/usr/lib -lc
+
+# compiler
+CC          = cc
+CFLAGS      = -g -O0 -W -Wall ${INCLUDES} -DVERSION=\"${VERSION}\"
+LDFLAGS     = ${LIBS}
diff --git a/ii.1 b/ii.1
@@ -0,0 +1,95 @@
+.de FN
+\fI\|\\$1\|\fP\\$2
+..
+.TH ii 1
+.SH NAME
+ii \- irc it or irc improved
+
+.SH DESCRIPTION
+.B ii
+is a minimalistic FIFO and filesystem based IRC client.
+It creates an irc directory tree with server, channel and
+nick name directories.
+In every directory a FIFO file (in) and and normal file (out)
+is placed. This will be for example ~/irc/irc.freenode.net/.
+The in file is used to communicate with the servers and the out
+files includes the server messages. For every channel and every nick
+name there will be new in and out files.
+The basic idea of this is to be able to communicate with an IRC
+server with basic command line tools.
+For example if you will join a channel just do echo "/j #channel" > in
+and ii creates a new channel directory with in and out file.
+.SH SYNOPSIS
+.B ii
+.RB [ \-s
+.IR servername ]
+.RB [ \-p
+.IR port ]
+.RB [ \-k
+.IR password ]
+.RB [ \-i
+.IR prefix ]
+.RB [ \-n
+.IR nickname ]
+.RB [ \-f
+.IR realname ]
+.RB \-v
+
+.SH OPTIONS
+.TP
+.BI \-s " servername"
+lets you override the default servername (irc.freenode.net)
+.TP
+.BI \-p " port"
+lets you override the default port (6667)
+.TP
+.BI \-k " password"
+lets you use a password to authentifacte your nick on the server
+.TP
+.BI \-i " prefix"
+lets you override the default irc path (~/irc)
+.TP
+.BI \-n " nickname"
+lets you override the default nick ($USER)
+.TP
+.BI \-f " realname"
+lets you specify your real name associated with your nick
+
+.SH DIRECTORIES
+.TP
+.FN ~/irc
+In this directory the irc tree will be created. In this directory you
+will find a directory for your server (default: irc.freenode.net) in
+which the FIFO and the output file will be stored.
+If you join a channel a new directory with the name of the channel
+will be created in the ~/irc/$servername/ directory.
+
+.SH COMMANDS
+.TP
+.FN /j " #channel"
+join a channel
+.TP
+.FN /l " #channel"
+leave a channel
+.TP
+.FN /m " user msg"
+write a private message to #user
+.TP
+.FN /n " nick"
+change the nick name
+.TP
+.FN /t " topic"
+set the topic of a channel
+.TP
+Everything which is not a command will simply be posted into the channel or to the server.
+.TP
+.FH out file usage
+Write wrappers, pagers or use your tools of choice to display the out file contents (loco, multitail, etc.). 
+.SH CONTACT
+.TP
+Write to ii (at) modprobe (dot) de for suggestions, fixes, 7|-|>< ;) etc.
+.SH AUTHORS
+Copyright \(co 2005 by Anselm R. Garbe <garbeam (at) gmail (dot) com> and Nico Golde <nico (at) ngolde (dot) de>
+.SH SEE ALSO
+.BR echo (1),
+.BR tail (1),
diff --git a/ii.c b/ii.c
@@ -0,0 +1,484 @@
+/*
+ * (C)opyright MMV Anselm R. Garbe <garbeam at gmail dot com>
+ *                 Nico Golde <nico at ngolde dot de>
+ * See LICENSE file for license details.
+ */
+
+#include <errno.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <fcntl.h>
+#include <string.h>
+#include <pwd.h>
+#include <signal.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <time.h>
+#include <unistd.h>
+
+#ifndef nil
+#define nil NULL /* for those who don't understand, nil is used in Plan9 */
+#endif
+
+enum { TOK_NICKSRV = 0, TOK_USER, TOK_CMD, TOK_CHAN, TOK_ARG, TOK_TEXT, TOK_LAST };
+
+static int irc;
+static char *fifo[256];
+static char *server = "irc.freenode.net";
+static char nick[32];			/* might change while running */
+static char path[_POSIX_PATH_MAX];
+static char buf[PIPE_BUF]; /* buffers used for communication */
+static char _buf[PIPE_BUF]; /* help buffer */
+
+static int add_channel(char *channel);
+
+static void usage()
+{
+	fprintf(stderr, "%s",
+			"ii - irc it - " VERSION "\n"
+			"  (C)opyright MMV Anselm R. Garbe, Nico Golde\n"
+			"usage: ii [-i <irc dir>] [-s <server>] [-p <port>]\n"
+			"          [-n <nick>] [-k <password>] [-f <fullname>]\n");
+	exit(EXIT_SUCCESS);
+}
+
+static void login(char *key, char *fullname)
+{
+	if(key)
+		snprintf(buf, PIPE_BUF,
+				 "PASS %s\r\nNICK %s\r\nUSER %s localhost %s :%s\r\n", key,
+				 nick, nick, server, fullname ? fullname : nick);
+	else
+		snprintf(buf, PIPE_BUF, "NICK %s\r\nUSER %s localhost %s :%s\r\n",
+				 nick, nick, server, fullname ? fullname : nick);
+	write(irc, buf, strlen(buf));	/* login */
+}
+
+static int tcpopen(unsigned short port)
+{
+	int fd;
+	struct sockaddr_in sin;
+	struct hostent *hp = gethostbyname(server);
+
+	memset(&sin, 0, sizeof(struct sockaddr_in));
+	if(hp == nil) {
+		perror("ii: cannot retrieve host information");
+		exit(EXIT_FAILURE);
+	}
+	sin.sin_family = AF_INET;
+	bcopy(hp->h_addr, (char *) &sin.sin_addr, hp->h_length);
+	sin.sin_port = htons(port);
+	if((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
+		perror("ii: cannot create socket");
+		exit(EXIT_FAILURE);
+	}
+	if(connect(fd, (const struct sockaddr *) &sin, sizeof(sin)) < 0) {
+		perror("ii: cannot connect to server");
+		exit(EXIT_FAILURE);
+	}
+	return fd;
+}
+
+static size_t tokenize(char **result, size_t reslen, char *str, char delim)
+{
+	char *p, *n;
+	size_t i;
+
+	if(!str)
+		return 0;
+	for(n = str; *n == ' '; n++);
+	p = n;
+	for(i = 0; *n != 0;) {
+		if(i == reslen)
+			return 0;
+		if(*n == delim) {
+			*n = 0;
+			result[i++] = p;
+			p = ++n;
+		} else
+			n++;
+	}
+	result[i++] = p;
+	return i + 2;				/* number of tokens */
+}
+
+/* creates directories top-down, if necessary */
+static void _mkdir(const char *dir)
+{
+	char tmp[256];
+	char *p;
+	size_t len;
+
+	snprintf(tmp, sizeof(tmp),"%s",dir);
+	len = strlen(tmp);
+	if(tmp[len - 1] == '/')
+		tmp[len - 1] = 0;
+	for(p = tmp + 1; *p; p++)
+		if(*p == '/') {
+			*p = 0;
+			if(access(tmp, F_OK))
+				mkdir(tmp, S_IRWXU);
+			*p = '/';
+		}
+	if(access(tmp, F_OK))
+		mkdir(tmp, S_IRWXU);
+}
+
+static int _create_filepath(char *filepath, size_t len, char *channel,
+							char *file)
+{
+	if(channel) {
+		if(!snprintf(filepath, len, "%s/%s", path, channel))
+			return 0;
+		_mkdir(filepath);
+		return snprintf(filepath, len, "%s/%s/%s", path, channel, file);
+	}
+	return snprintf(filepath, len, "%s/%s", path, file);
+}
+
+static void create_filepath(char *filepath, size_t len, char *channel,
+							char *suffix)
+{
+	if(!_create_filepath(filepath, len, channel, suffix)) {
+		fprintf(stderr, "%s", "ii: path to irc directory too long\n");
+		exit(EXIT_FAILURE);
+	}
+}
+
+static void print_out(char *channel, char *buffer)
+{
+	static char outfile[256];
+	FILE *out;
+	static char buft[8];
+	time_t t = time(0);
+
+	create_filepath(outfile, sizeof(outfile), channel, "out");
+	out = fopen(outfile, "a");
+	strftime(buft, sizeof(buft), "%R", localtime(&t));
+	fprintf(out, "%s %s\n", buft, buffer);
+	fclose(out);
+}
+
+static void proc_fifo_privmsg(char *channel, char *buffer)
+{
+	snprintf(buf, PIPE_BUF, "<%s> %s", nick, buffer);
+	print_out(channel, buf);
+	snprintf(buf, PIPE_BUF, "PRIVMSG %s :%s\r\n", channel, buffer);
+	write(irc, buf, strlen(buf));
+}
+
+static void proc_fifo_input(int fd, char *buffer)
+{
+	static char infile[256];
+	char *p;
+	/*int ret = 1; */
+	if(buffer[0] != '/') {
+		if(fifo[fd][0] != 0)
+			proc_fifo_privmsg(fifo[fd], buffer);
+		return;
+	}
+	switch (buffer[1]) {
+	case 'j':
+		p = strchr(&buffer[3], ' ');
+		if(p)
+			*p = 0;
+		snprintf(buf, PIPE_BUF, "JOIN %s\r\n", &buffer[3]);
+		add_channel(&buffer[3]);
+		break;
+	case 't':
+		snprintf(buf, PIPE_BUF, "TOPIC %s :%s\r\n", fifo[fd], &buffer[3]);
+		break;
+	case 'a':
+		snprintf(buf, PIPE_BUF, "-!- %s is away \"%s\"", nick, &buffer[3]);
+		print_out(fifo[fd], buf);
+		snprintf(buf, PIPE_BUF, "AWAY :%s\r\n", &buffer[3]);
+		break;
+	case 'm':
+		p = strchr(&buffer[3], ' ');
+		if(p) {
+			*p = 0;
+			add_channel(&buffer[3]);
+			proc_fifo_privmsg(&buffer[3], p + 1);
+		}
+		return;
+		break;
+	case 'n':
+		snprintf(nick, sizeof(nick),"%s", buffer);
+		snprintf(buf, PIPE_BUF, "NICK %s\r\n", &buffer[3]);
+		break;
+	case 'l':
+		if(fifo[fd][0] == 0)
+			return;
+		if(buffer[2] == ' ')
+			snprintf(buf, PIPE_BUF, "PART %s :%s\r\n", fifo[fd],
+					 &buffer[3]);
+		else
+			snprintf(buf, PIPE_BUF,
+					 "PART %s :ii - 500SLOC are too much\r\n", fifo[fd]);
+		write(irc, buf, strlen(buf));
+		close(fd);
+		create_filepath(infile, sizeof(infile), fifo[fd], "in");
+		unlink(infile);
+		free(fifo[fd]);
+		fifo[fd] = 0;
+		return;
+		break;
+	default:
+		snprintf(buf, PIPE_BUF, "%s\r\n", &buffer[1]);
+		break;
+	}
+	write(irc, buf, strlen(buf));
+}
+
+static void proc_server_cmd(char *buffer)
+{
+	char *argv[TOK_LAST], *cmd, *p;
+	int i;
+	if(!buffer)
+		return;
+
+	for(i = 0; i < TOK_LAST; i++)
+		argv[i] = nil;
+
+	/*
+	   <message>  ::= [':' <prefix> <SPACE> ] <command> <params> <crlf>
+	   <prefix>   ::= <servername> | <nick> [ '!' <user> ] [ '@' <host> ]
+	   <command>  ::= <letter> { <letter> } | <number> <number> <number>
+	   <SPACE>    ::= ' ' { ' ' }
+	   <params>   ::= <SPACE> [ ':' <trailing> | <middle> <params> ]
+	   <middle>   ::= <Any *non-empty* sequence of octets not including SPACE
+	   or NUL or CR or LF, the first of which may not be ':'>
+	   <trailing> ::= <Any, possibly *empty*, sequence of octets not including NUL or CR or LF>
+	   <crlf>     ::= CR LF
+	 */
+	if(buffer[0] == ':') {		/* check prefix */
+		p = strchr(buffer, ' ');
+		*p = 0;
+		for(++p; *p == ' '; p++);
+		cmd = p;
+		argv[TOK_NICKSRV] = &buffer[1];
+		if((p = strchr(buffer, '!'))) {
+			*p = 0;
+			argv[TOK_USER] = ++p;
+		}
+	} else
+		cmd = buffer;
+
+	/* remove CRLFs */
+	for(p = cmd; p && *p != 0; p++)
+		if(*p == '\r' || *p == '\n')
+			*p = 0;
+
+	if((p = strchr(cmd, ':'))) {
+		*p = 0;
+		argv[TOK_TEXT] = ++p;
+	}
+	tokenize(&argv[TOK_CMD], TOK_LAST - TOK_CMD + 1, cmd, ' ');
+
+	if(!strncmp("PING", argv[TOK_CMD], 5)) {
+		snprintf(buf, PIPE_BUF, "PONG %s\r\n", argv[TOK_TEXT]);
+		write(irc, buf, strlen(buf));
+		return;
+	} else if(!argv[TOK_NICKSRV] || !argv[TOK_USER]) {	/* server command */
+		snprintf(buf, PIPE_BUF, "%s", argv[TOK_TEXT] ? argv[TOK_TEXT] : "");
+		print_out(0, buf);
+		return;
+	} else if(!strncmp("ERROR", argv[TOK_CMD], 6))
+		snprintf(buf, PIPE_BUF, "-!- error %s", argv[TOK_TEXT] ? argv[TOK_TEXT] : "unknown");
+	else if(!strncmp("JOIN", argv[TOK_CMD], 5)) {
+		if(argv[TOK_TEXT]!=nil){
+			p = strchr(argv[TOK_TEXT], ' ');
+		if(p)
+			*p = 0;
+		}
+		argv[TOK_CHAN] = argv[TOK_TEXT];
+		snprintf(buf, PIPE_BUF, "-!- %s(%s) has joined %s", argv[TOK_NICKSRV], argv[TOK_USER], argv[TOK_TEXT]);
+	} else if(!strncmp("PART", argv[TOK_CMD], 5)) {
+		snprintf(buf, PIPE_BUF, "-!- %s(%s) has left %s", argv[TOK_NICKSRV], argv[TOK_USER], argv[TOK_CHAN]);
+	} else if(!strncmp("MODE", argv[TOK_CMD], 5))
+		snprintf(buf, PIPE_BUF, "-!- %s changed mode/%s -> %s %s", argv[TOK_NICKSRV], argv[TOK_CMD + 1], argv[TOK_CMD + 2], argv[TOK_CMD + 3]);
+	else if(!strncmp("QUIT", argv[TOK_CMD], 5))
+		snprintf(buf, PIPE_BUF, "-!- %s(%s) has quit %s \"%s\"", argv[TOK_NICKSRV], argv[TOK_USER], argv[TOK_CHAN], argv[TOK_TEXT] ? argv[TOK_TEXT] : "");
+	else if(!strncmp("NICK", argv[TOK_CMD], 5))
+		snprintf(buf, PIPE_BUF, "-!- %s changed nick to %s", argv[TOK_NICKSRV], argv[TOK_TEXT]);
+	else if(!strncmp("TOPIC", argv[TOK_CMD], 6))
+		snprintf(buf, PIPE_BUF, "-!- %s changed topic to \"%s\"", argv[TOK_NICKSRV], argv[TOK_TEXT] ? argv[TOK_TEXT] : "");
+	else if(!strncmp("KICK", argv[TOK_CMD], 5))
+		snprintf(buf, PIPE_BUF, "-!- %s kicked %s (\"%s\")", argv[TOK_NICKSRV], argv[TOK_ARG], argv[TOK_TEXT] ? argv[TOK_TEXT] : "");
+	else if(!strncmp("NOTICE", argv[TOK_CMD], 7))
+		snprintf(buf, PIPE_BUF, "-!- \"%s\")", argv[TOK_TEXT] ? argv[TOK_TEXT] : "");
+	else if(!strncmp("PRIVMSG", argv[TOK_CMD], 8))
+		snprintf(buf, PIPE_BUF, "<%s> %s", argv[TOK_NICKSRV], argv[TOK_TEXT] ? argv[TOK_TEXT] : "");
+	if(!argv[TOK_CHAN] || !strncmp(argv[TOK_CHAN], nick, strlen(nick)))
+		print_out(argv[TOK_NICKSRV], buf);
+	else
+		print_out(argv[TOK_CHAN], buf);
+}
+
+static int open_fifo(char *channel)
+{
+	static char infile[256];
+	create_filepath(infile, sizeof(infile), channel, "in");
+	if(access(infile, F_OK) == -1)
+		mkfifo(infile, S_IRWXU);
+	return open(infile, O_RDONLY | O_NONBLOCK, 0);
+}
+
+static int add_channel(char *channel)
+{
+	int i;
+	char *new;
+
+	if(channel && channel[0] != 0) {
+		for(i = 0; i < 256; i++)
+			if(fifo[i] && !strncmp(channel, fifo[i], strlen(channel)))
+				return 1;
+	}
+	new = strdup(channel);
+	if((i = open_fifo(new)) >= 0)
+		fifo[i] = new;
+	else {
+		perror("ii: cannot create in fifo");
+		return 0;
+	}
+	return 1;
+}
+
+static int readl_fd(int fd)
+{
+	int i = 0;
+	char c;
+	do {
+		if(read(fd, &c, sizeof(char)) != sizeof(char))
+			return 0;
+		_buf[i++] = c;
+	}
+	while(c != '\n' && i<PIPE_BUF);
+	_buf[i - 1] = 0;			/* eliminates '\n' */
+	return 1;
+}
+
+static void handle_fifo_input(int fd)
+{
+	if(!readl_fd(fd)) {
+		int i;
+		if((i = open_fifo(fifo[fd]))) {
+			fifo[i] = fifo[fd];
+			fifo[fd] = 0;
+		}
+		return;
+	}
+	proc_fifo_input(fd, _buf);
+}
+
+static void handle_server_output()
+{
+	if(!readl_fd(irc)) {
+		perror("ii: remote host closed connection");
+		exit(EXIT_FAILURE);
+	}
+	proc_server_cmd(_buf);
+}
+
+static void run()
+{
+	int i, r, maxfd;
+	fd_set rd;
+
+	for(;;) {
+		/* prepare */
+		FD_ZERO(&rd);
+		maxfd = irc;
+		FD_SET(irc, &rd);
+		for(i = 0; i < 256; i++) {
+			if(fifo[i]) {
+				if(maxfd < i)
+					maxfd = i;
+				FD_SET(i, &rd);
+			}
+		}
+
+		r = select(maxfd + 1, &rd, 0, 0, 0);
+		if(r == -1 && errno == EINTR)
+			continue;
+		if(r < 0) {
+			perror("ii: error on select()");
+			exit(EXIT_FAILURE);
+		} else if(r > 0) {
+			for(i = 0; i < 256; i++) {
+				if(FD_ISSET(i, &rd)) {
+					if(i == irc)
+						handle_server_output();
+					else
+						handle_fifo_input(i);
+				}
+			}
+		}
+	}
+}
+
+int main(int argc, char *argv[])
+{
+	int i;
+	unsigned short port = 6667;
+	struct passwd *spw = getpwuid(getuid());
+	char *key = nil;
+	char prefix[_POSIX_PATH_MAX];
+	char *fullname = nil;
+
+	if(!spw) {
+		fprintf(stderr,"ii: getpwuid() failed\n"); 
+		exit(EXIT_FAILURE);
+	}
+	snprintf(nick, sizeof(nick), "%s", spw->pw_name);
+	snprintf(prefix, sizeof(prefix),"%s", spw->pw_dir);
+
+	if(argc == 2 && argv[1][0] == '-' && argv[1][1] == 'h')
+		usage();
+
+	for(i = 1; (i + 1 < argc) && (argv[i][0] == '-'); i++) {
+		switch (argv[i][1]) {
+		case 'i':
+			snprintf(prefix,sizeof(prefix),"%s", argv[++i]);
+			break;
+		case 's':
+			server = argv[++i];
+			break;
+		case 'p':
+			port = atoi(argv[++i]);
+			break;
+		case 'n':
+			snprintf(nick,sizeof(nick),"%s", argv[++i]);
+			break;
+		case 'k':
+			key = argv[++i];
+			break;
+		case 'f':
+			fullname = argv[++i];
+			break;
+		default:
+			usage();
+			break;
+		}
+	}
+	irc = tcpopen(port);
+	if(!snprintf(path, sizeof(path), "%s/irc/%s", prefix, server)) {
+		fprintf(stderr, "%s", "ii: path to irc directory too long\n");
+		exit(EXIT_FAILURE);
+	}
+	_mkdir(path);
+
+	for(i = 0; i < 256; i++)
+		fifo[i] = 0;
+
+	if(!add_channel(""))
+		exit(EXIT_FAILURE);
+	login(key, fullname);
+	run();
+
+	return 0;
+}