initial commit
This commit is contained in:
Anselm R. Garbe
commit
759063908d
22
LICENSE
Normal file
22
LICENSE
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@ -0,0 +1,22 @@
|
||||
MIT/X Consortium License
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(C)opyright MMV-MMVI Anselm R. Garbe <garbeam@gmail.com>
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(C)opyright MMV Nico Golde <nico at ngolde dot de>
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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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:
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||||
The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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||||
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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53
Makefile
Normal file
53
Makefile
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@ -0,0 +1,53 @@
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# ii - irc it - simple but flexible IRC client
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# (C)opyright MMV Anselm R. Garbe, Nico Golde
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include config.mk
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SRC = sic.c
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OBJ = ${SRC:.c=.o}
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MAN1 = sic.1
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BIN = sic
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all: options sic
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@echo built sic
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options:
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@echo ii build options:
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@echo "LIBS = ${LIBS}"
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@echo "CFLAGS = ${CFLAGS}"
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@echo "LDFLAGS = ${LDFLAGS}"
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@echo "CC = ${CC}"
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.c.o:
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@echo CC $<
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@${CC} -c ${CFLAGS} $<
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clean:
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rm -f sic *.o core sic-${VERSION}.tar.gz
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dist: clean
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@mkdir -p sic-${VERSION}
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@cp -R Makefile README LICENSE config.mk sic.c sic.1 sic-${VERSION}
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@tar -cf sic-${VERSION}.tar sic-${VERSION}
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@gzip sic-${VERSION}.tar
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@rm -rf sic-${VERSION}
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sic: ${OBJ}
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@echo LD $@
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@${CC} -o $@ ${OBJ} ${LDFLAGS}
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install: all
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@mkdir -p ${DESTDIR}${PREFIX}/bin
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@cp -f ${BIN} ${DESTDIR}${PREFIX}/bin
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@echo installed executable files to ${DESTDIR}${PREFIX}/bin
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@mkdir -p ${DESTDIR}${MANPREFIX}/man1
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@cp -f ${MAN1} ${DESTDIR}${MANPREFIX}/man1
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@echo installed manual pages to ${DESTDIR}${MANPREFIX}/man1
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uninstall:
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for i in ${BIN}; do \
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rm -f ${DESTDIR}${PREFIX}/bin/`basename $$i`; \
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done
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for i in ${MAN1}; do \
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rm -f ${DESTDIR}${MANPREFIX}/man1/`basename $$i`; \
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done
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26
README
Normal file
26
README
Normal file
@ -0,0 +1,26 @@
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sic - simple irc client
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-----------------------
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sic is an extremly fast, small and simple irc client. It reads commands from
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standard input and prints all server output to standard output. It multiplexes
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also all channel traffic into one output, that you don't have to switch
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different channel buffers, that's actually a feature.
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Installation
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------------
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Edit config.mk to match your local setup. sic is installed into
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/usr/local by default.
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Afterwards enter the following command to build and install sic
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(if necessary as root):
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$ make clean install
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Running sic
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-----------
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Simply invoke the 'sic' command with the required arguments.
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Configuration
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-------------
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No configuration is needed.
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15
config.mk
Normal file
15
config.mk
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# Customize to fit your system
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# paths
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PREFIX = /usr/local
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MANPREFIX = ${PREFIX}/share/man
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VERSION = 0.0
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# includes and libs
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LIBS = -L${PREFIX}/lib -L/usr/lib -lc
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# compiler
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CFLAGS = -g -Wall -O2 -I${PREFIX}/include -I/usr/include \
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-DVERSION=\"${VERSION}\"
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LDFLAGS = -g ${LIBS}
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57
sic.1
Normal file
57
sic.1
Normal file
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.TH SIC 1 sic-0.0
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.SH NAME
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sic \- simple irc client
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.SH SYNOPSIS
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.B sic
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.RB \-a
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.IR address
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.RB [ \-n
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.IR nick ]
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.RB [ \-f
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.IR fullname ]
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.RB [ \-p
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.IR password ]
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.RB [ \-v ]
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.SH DESCRIPTION
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.B sic
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is an extremly fast, small and simple irc client. It reads commands from
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standard input and prints all server output to standard output. It multiplexes
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also all channel traffic into one output, that you don't have to switch
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different channel buffers, that's actually a feature.
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.SH OPTIONS
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.TP
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.BI \-a " address "
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Lets you specify the address which
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.B sic
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uses to listen for connections. The syntax for
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.I address
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is taken (along with many other profound ideas) from the Plan 9 operating
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system and has the form
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.B tcp!hostname!port
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for tcp sockets.
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.BI \-p " password"
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Specifies the password to authenticate the nick on the server.
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.TP
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.BI \-n " nick "
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Specifies the nick name (default: $USER).
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.TP
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.BI \-f " fullname "
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Specifies the full name.
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.BI \-v
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Prints version information to standard output, then exits.
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.SH COMMANDS
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.TP
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.FN /j " #channel/user "
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join/query a channel/user
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.TP
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.FN /l " #channel "
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leave a channel/query
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.TP
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.FN /m " #channel/user msg "
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write a message to #channel/user
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.FN /t " topic"
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set the channel topic
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.TP
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Everything which is not a command will simply be posted into the channel or to
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the server.
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.TP
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387
sic.c
Normal file
387
sic.c
Normal file
@ -0,0 +1,387 @@
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/*
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* (C)opyright MMV-MMVI Anselm R. Garbe <garbeam at gmail dot com>
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* (C)opyright MMV-MMVI Nico Golde <nico at ngolde dot de>
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* See LICENSE file for license details.
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*/
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#include <errno.h>
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#include <netdb.h>
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#include <sys/types.h>
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#include <netinet/in.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <limits.h>
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#include <fcntl.h>
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#include <string.h>
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#include <pwd.h>
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#include <signal.h>
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#include <sys/stat.h>
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#include <sys/socket.h>
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#include <ctype.h>
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#include <time.h>
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#include <unistd.h>
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#define PING_TIMEOUT 300
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#define MAXMSG 4096
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enum { TOK_NICKSRV = 0, TOK_USER, TOK_CMD, TOK_CHAN, TOK_ARG, TOK_TEXT, TOK_LAST };
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static int irc;
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static time_t last_response;
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static char nick[32]; /* might change while running */
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static char message[MAXMSG]; /* message buf used for communication */
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static char *host = NULL;
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static int
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tcpopen(char *address)
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{
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int fd = 0;
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char *port;
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struct sockaddr_in addr = { 0 };
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struct hostent *hp;
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unsigned int prt;
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if((host = strchr(address, '!')))
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*(host++) = 0;
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if(!(port = strrchr(host, '!')))
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return -1;
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*port = 0;
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port++;
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if(sscanf(port, "%d", &prt) != 1)
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return -1;
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/* init */
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if((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
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return -1;
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hp = gethostbyname(host);
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addr.sin_family = AF_INET;
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addr.sin_port = htons(prt);
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bcopy(hp->h_addr, &addr.sin_addr, hp->h_length);
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if(connect(fd, (struct sockaddr *) &addr,
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sizeof(struct sockaddr_in))) {
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close(fd);
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return -1;
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}
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return fd;
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}
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unsigned int
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tokenize(char **result, unsigned int reslen, char *str, char delim)
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{
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char *p, *n;
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unsigned int i = 0;
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if(!str)
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return 0;
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for(n = str; *n == delim; n++);
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p = n;
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for(i = 0; *n != 0;) {
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if(i == reslen)
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return i;
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if(*n == delim) {
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*n = 0;
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if(strlen(p))
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result[i++] = p;
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p = ++n;
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} else
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n++;
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}
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if((i < reslen) && (p < n) && strlen(p))
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result[i++] = p;
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return i; /* number of tokens */
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}
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static void
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print_out(char *channel, char *buf)
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{
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static char buft[18];
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time_t t = time(0);
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strftime(buft, sizeof(buft), "%F %R", localtime(&t));
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fprintf(stdout, "%s: %s %s\n", channel, buft, buf);
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}
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static void
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proc_channels_privmsg(char *channel, char *buf)
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{
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snprintf(message, MAXMSG, "<%s> %s", nick, buf);
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print_out(channel, message);
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snprintf(message, MAXMSG, "PRIVMSG %s :%s\r\n", channel, buf);
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write(irc, message, strlen(message));
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}
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static void
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proc_channels_input(char *buf)
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{
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char *p;
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if((p = strchr(buf, ' ')))
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*(p++) = 0;
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if(buf[0] != '/' && buf[0] != 0) {
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proc_channels_privmsg(buf, p);
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return;
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}
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if((p = strchr(&buf[3], ' ')))
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*(p++) = 0;
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switch (buf[1]) {
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case 'j':
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if(buf[3] == '#')
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snprintf(message, MAXMSG, "JOIN %s\r\n", &buf[3]);
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else if(p) {
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proc_channels_privmsg(&buf[3], p + 1);
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return;
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}
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break;
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case 't':
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snprintf(message, MAXMSG, "TOPIC %s :%s\r\n", &buf[3], p);
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break;
|
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case 'l':
|
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if(p)
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snprintf(message, MAXMSG, "PART %s :%s\r\n", &buf[3], p);
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else
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snprintf(message, MAXMSG, "PART %s :sic - 300 SLOC are too much\r\n", &buf[3]);
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write(irc, message, strlen(message));
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return;
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break;
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default:
|
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snprintf(message, MAXMSG, "%s\r\n", &buf[1]);
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break;
|
||||
}
|
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write(irc, message, strlen(message));
|
||||
}
|
||||
|
||||
static void
|
||||
proc_server_cmd(char *buf)
|
||||
{
|
||||
char *argv[TOK_LAST], *cmd, *p;
|
||||
int i;
|
||||
if(!buf || *buf=='\0')
|
||||
return;
|
||||
|
||||
for(i = 0; i < TOK_LAST; i++)
|
||||
argv[i] = NULL;
|
||||
|
||||
/*
|
||||
<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(buf[0] == ':') { /* check prefix */
|
||||
p = strchr(buf, ' ');
|
||||
*p = 0;
|
||||
for(++p; *p == ' '; p++);
|
||||
cmd = p;
|
||||
argv[TOK_NICKSRV] = &buf[1];
|
||||
if((p = strchr(buf, '!'))) {
|
||||
*p = 0;
|
||||
argv[TOK_USER] = ++p;
|
||||
}
|
||||
} else
|
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cmd = buf;
|
||||
|
||||
/* 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, cmd, ' ');
|
||||
|
||||
if(!strncmp("PONG", argv[TOK_CMD], 5)) {
|
||||
return;
|
||||
} else if(!strncmp("PING", argv[TOK_CMD], 5)) {
|
||||
snprintf(message, MAXMSG, "PONG %s\r\n", argv[TOK_TEXT]);
|
||||
write(irc, message, strlen(message));
|
||||
return;
|
||||
} else if(!argv[TOK_NICKSRV] || !argv[TOK_USER]) { /* server command */
|
||||
snprintf(message, MAXMSG, "%s", argv[TOK_TEXT] ? argv[TOK_TEXT] : "");
|
||||
print_out(0, message);
|
||||
return;
|
||||
} else if(!strncmp("ERROR", argv[TOK_CMD], 6))
|
||||
snprintf(message, MAXMSG, "-!- error %s",
|
||||
argv[TOK_TEXT] ? argv[TOK_TEXT] : "unknown");
|
||||
else if(!strncmp("JOIN", argv[TOK_CMD], 5)) {
|
||||
if(argv[TOK_TEXT]!=NULL){
|
||||
p = strchr(argv[TOK_TEXT], ' ');
|
||||
if(p)
|
||||
*p = 0;
|
||||
}
|
||||
argv[TOK_CHAN] = argv[TOK_TEXT];
|
||||
snprintf(message, MAXMSG, "-!- %s(%s) has joined %s",
|
||||
argv[TOK_NICKSRV], argv[TOK_USER], argv[TOK_TEXT]);
|
||||
} else if(!strncmp("PART", argv[TOK_CMD], 5)) {
|
||||
snprintf(message, MAXMSG, "-!- %s(%s) has left %s",
|
||||
argv[TOK_NICKSRV], argv[TOK_USER], argv[TOK_CHAN]);
|
||||
} else if(!strncmp("MODE", argv[TOK_CMD], 5))
|
||||
snprintf(message, MAXMSG, "-!- %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(message, MAXMSG, "-!- %s(%s) has quit \"%s\"",
|
||||
argv[TOK_NICKSRV], argv[TOK_USER],
|
||||
argv[TOK_TEXT] ? argv[TOK_TEXT] : "");
|
||||
else if(!strncmp("NICK", argv[TOK_CMD], 5))
|
||||
snprintf(message, MAXMSG, "-!- %s changed nick to %s",
|
||||
argv[TOK_NICKSRV], argv[TOK_TEXT]);
|
||||
else if(!strncmp("TOPIC", argv[TOK_CMD], 6))
|
||||
snprintf(message, MAXMSG, "-!- %s changed topic to \"%s\"",
|
||||
argv[TOK_NICKSRV], argv[TOK_TEXT] ? argv[TOK_TEXT] : "");
|
||||
else if(!strncmp("KICK", argv[TOK_CMD], 5))
|
||||
snprintf(message, MAXMSG, "-!- %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(message, MAXMSG, "-!- \"%s\")",
|
||||
argv[TOK_TEXT] ? argv[TOK_TEXT] : "");
|
||||
else if(!strncmp("PRIVMSG", argv[TOK_CMD], 8))
|
||||
snprintf(message, MAXMSG, "<%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], message);
|
||||
else
|
||||
print_out(argv[TOK_CHAN], message);
|
||||
}
|
||||
|
||||
static int
|
||||
read_line(int fd, unsigned int res_len, char *buf)
|
||||
{
|
||||
unsigned int i = 0;
|
||||
char c;
|
||||
do {
|
||||
if(read(fd, &c, sizeof(char)) != sizeof(char))
|
||||
return -1;
|
||||
buf[i++] = c;
|
||||
}
|
||||
while(c != '\n' && i < res_len);
|
||||
buf[i - 1] = 0; /* eliminates '\n' */
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
handle_server_output()
|
||||
{
|
||||
static char buf[MAXMSG];
|
||||
if(read_line(irc, MAXMSG, buf) == -1) {
|
||||
perror("sic: remote host closed connection");
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
proc_server_cmd(buf);
|
||||
}
|
||||
|
||||
int
|
||||
main(int argc, char *argv[])
|
||||
{
|
||||
char address[256];
|
||||
char *password = NULL;
|
||||
char *fullname = NULL;
|
||||
char ping_msg[512], buf[MAXMSG];
|
||||
int i, n, r, maxfd;
|
||||
struct passwd *spw = getpwuid(getuid());
|
||||
struct timeval tv;
|
||||
fd_set rd;
|
||||
|
||||
if(!spw) {
|
||||
fprintf(stderr,"sic: getpwuid() failed\n");
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
snprintf(nick, sizeof(nick), "%s", spw->pw_name);
|
||||
|
||||
if(argc == 2 && argv[1][0] == '-' && argv[1][1] == 'h')
|
||||
goto Usage;
|
||||
|
||||
address[0] = 0;
|
||||
for(i = 1; (i + 1 < argc) && (argv[i][0] == '-'); i++) {
|
||||
switch (argv[i][1]) {
|
||||
default:
|
||||
Usage:
|
||||
fputs("usage: sic -a address [-n nick] [-f fullname] [-p password] [-v]\n",
|
||||
stdout);
|
||||
exit(EXIT_FAILURE);
|
||||
break;
|
||||
case 'a':
|
||||
strncpy(address, argv[++i], sizeof(address));
|
||||
break;
|
||||
case 'n':
|
||||
snprintf(nick, sizeof(nick), "%s", argv[++i]);
|
||||
break;
|
||||
case 'p':
|
||||
password = argv[++i];
|
||||
break;
|
||||
case 'f':
|
||||
fullname = argv[++i];
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if(!address[0])
|
||||
goto Usage;
|
||||
|
||||
if((irc = tcpopen(address)) == -1) {
|
||||
fprintf(stderr, "sic: cannot connect server '%s'\n", address);
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
/* login */
|
||||
if(password)
|
||||
snprintf(message, MAXMSG,
|
||||
"PASS %s\r\nNICK %s\r\nUSER %s localhost %s :%s\r\n",
|
||||
password, nick, nick, host, fullname ? fullname : nick);
|
||||
else
|
||||
snprintf(message, MAXMSG, "NICK %s\r\nUSER %s localhost %s :%s\r\n",
|
||||
nick, nick, host, fullname ? fullname : nick);
|
||||
write(irc, message, strlen(message));
|
||||
|
||||
snprintf(ping_msg, sizeof(ping_msg), "PING %s\r\n", host);
|
||||
for(;;) {
|
||||
FD_ZERO(&rd);
|
||||
maxfd = irc;
|
||||
FD_SET(0, &rd);
|
||||
FD_SET(irc, &rd);
|
||||
tv.tv_sec = 120;
|
||||
tv.tv_usec = 0;
|
||||
r = select(maxfd + 1, &rd, 0, 0, &tv);
|
||||
if(r < 0) {
|
||||
if(errno == EINTR)
|
||||
continue;
|
||||
perror("sic: error on select()");
|
||||
exit(EXIT_FAILURE);
|
||||
} else if(r == 0) {
|
||||
if(time(NULL) - last_response >= PING_TIMEOUT) {
|
||||
print_out(NULL, "-!- sic shutting down: ping timeout");
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
write(irc, ping_msg, strlen(ping_msg));
|
||||
continue;
|
||||
}
|
||||
if(FD_ISSET(irc, &rd)) {
|
||||
handle_server_output();
|
||||
last_response = time(NULL);
|
||||
}
|
||||
if(FD_ISSET(0, &rd)) {
|
||||
i = n = 0;
|
||||
for(;;) {
|
||||
if((i = getchar()) == EOF) {
|
||||
perror("sic: broken pipe");
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
if(i == '\n' || n >= sizeof(buf) - 1)
|
||||
break;
|
||||
buf[n++] = i;
|
||||
}
|
||||
buf[n] = 0;
|
||||
proc_channels_input(buf);
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user