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13 changed files with 392 additions and 473 deletions

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@ -1,21 +0,0 @@
root = true
[*]
indent_style = space
indent_size = 4
end_of_line = lf
charset = utf-8
trim_trailing_whitespace = true
insert_final_newline = true
[{*.c,*.h}]
indent_style = tab
indent_size = 4
[*.md]
trim_trailing_whitespace = false
indent_style = tab
[Makefile]
indent_style = tab
indent_size = 4

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.hgtags Normal file
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de32c537aaf66554894712563ffba8d9bc4c2714 0.1
56350a01f27753cfbdbb3dbc25f2a53dd4c2ac45 0.2
d77f00af559258679a0fad5d264685d663e6975a 0.3
a3549fb4c72ff0edb816c8c29be7ff289db5b003 0.4
70d49a37b35695f2f771bddaf309f05ea60af8bc 0.5
d7923d9e717c1c6f1ed3b17ec90bfdd7e7bfcca0 0.6
643a6e8b8634b70d2459637fcfff6eca776fc919 0.7

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@ -1,10 +1,7 @@
MIT/X Consortium License
© 2022 Alexander Popov <iiiypuk@fastmail.fm>
© 2005-2017 Anselm R Garbe <anselm@garbe.us>
© 2008-2009 Jeroen Schot <schot@a-eskwadraat.nl>
© 2007-2009 Kris Maglione <maglione.k@gmail.com>
© 2005 Nico Golde <nico at ngolde dot de>
(C)opyright MMV-MMVI Anselm R. Garbe <garbeam@gmail.com>
(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"),

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@ -1,59 +1,57 @@
.POSIX:
# sic - simple irc client
# (C)opyright MMVI Anselm R. Garbe
NAME = sic
VERSION = 1.3
include config.mk
# paths
PREFIX = /usr/local
MANPREFIX = ${PREFIX}/share/man
# use system flags.
SIC_CFLAGS = ${CFLAGS}
SIC_LDFLAGS = ${LDFLAGS}
SIC_CPPFLAGS = ${LDFLAGS} -DVERSION=\"${VERSION}\" -D_GNU_SOURCE
BIN = sic
SRC = ${BIN:=.c}
SRC = sic.c
OBJ = ${SRC:.c=.o}
MAN1 = ${BIN:=.1}
all: ${BIN}
all: options sic
${BIN}: ${@:=.o}
${OBJ}: config.h strlcpy.c util.c
.o:
${CC} -o $@ $< ${SIC_LDFLAGS}
options:
@echo sic build options:
@echo "CFLAGS = ${CFLAGS}"
@echo "LDFLAGS = ${LDFLAGS}"
@echo "CC = ${CC}"
@echo "LD = ${LD}"
.c.o:
${CC} -c ${SIC_CFLAGS} ${SIC_CPPFLAGS} -o $@ -c $<
@echo CC $<
@${CC} -c ${CFLAGS} $<
config.h:
cp config.def.h $@
${OBJ}: config.mk
sic: ${OBJ}
@echo LD $@
@${LD} -o $@ ${OBJ} ${LDFLAGS}
@strip $@
clean:
rm -f ${BIN} ${OBJ} "${NAME}-${VERSION}.tar.gz"
@echo cleaning
@rm -f sic ${OBJ} sic-${VERSION}.tar.gz
dist:
mkdir -p "${NAME}-${VERSION}"
cp -fR LICENSE Makefile README arg.h config.def.h \
${MAN1} ${SRC} util.c strlcpy.c "${NAME}-${VERSION}"
tar -cf - "${NAME}-${VERSION}" | \
gzip -c > "${NAME}-${VERSION}.tar.gz"
rm -rf "${NAME}-${VERSION}"
dist: clean
@echo creating dist tarball
@mkdir -p sic-${VERSION}
@cp -R LICENSE Makefile README config.mk sic.1 ${SRC} sic-${VERSION}
@tar -cf sic-${VERSION}.tar sic-${VERSION}
@gzip sic-${VERSION}.tar
@rm -rf sic-${VERSION}
install: all
mkdir -p ${DESTDIR}${PREFIX}/bin
cp -f ${BIN} "${DESTDIR}${PREFIX}/bin"
chmod 755 "${DESTDIR}${PREFIX}/bin/${BIN}"
mkdir -p "${DESTDIR}${MANPREFIX}/man1"
sed "s/VERSION/${VERSION}/g" < ${MAN1} > "${DESTDIR}${MANPREFIX}/man1/${MAN1}"
chmod 644 "${DESTDIR}${MANPREFIX}/man1/${MAN1}"
@echo installing executable file to ${DESTDIR}${PREFIX}/bin
@mkdir -p ${DESTDIR}${PREFIX}/bin
@cp -f sic ${DESTDIR}${PREFIX}/bin
@chmod 755 ${DESTDIR}${PREFIX}/bin/sic
@echo installing manual page to ${DESTDIR}${MANPREFIX}/man1
@mkdir -p ${DESTDIR}${MANPREFIX}/man1
@sed 's/VERSION/${VERSION}/g' < sic.1 > ${DESTDIR}${MANPREFIX}/man1/sic.1
@chmod 644 ${DESTDIR}${MANPREFIX}/man1/sic.1
uninstall:
rm -f \
"${DESTDIR}${PREFIX}/bin/${BIN}"\
"${DESTDIR}${MANPREFIX}/man1/${MAN1}"
@echo removing executable file from ${DESTDIR}${PREFIX}/bin
@rm -f ${DESTDIR}${PREFIX}/bin/sic
@echo removing manual page from ${DESTDIR}${MANPREFIX}/man1
@rm -f ${DESTDIR}${MANPREFIX}/man1/sic.1
.PHONY: all clean dist install uninstall
.PHONY: all options clean dist install uninstall

22
README Normal file
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sic - simple irc client
=======================
sic is an extremly fast, small and simple irc client. It reads commands from
standard input and prints all server output to standard output. It multiplexes
also all channel traffic into one output, that you don't have to switch
different channel buffers, that's actually a feature.
Installation
------------
Edit config.mk to match your local setup. sic is installed into
/usr/local by default.
Afterwards enter the following command to build and install sic
(if necessary as root):
$ make clean install
Running sic
-----------
Simply invoke the 'sic' command with the required arguments.

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@ -1,23 +0,0 @@
sic - simple irc client
=======================
sic is an extremely fast, small and simple irc client. It reads commands from
standard input and prints all server output to standard output. It multiplexes
also all channel traffic into one output so that you don't have to switch
different channel buffers: that's actually a feature.
Installation
------------
Edit the Makefile or override the flags to match your local setup. sic is
installed into /usr/local by default.
Afterwards enter the following command to build and install sic
(if necessary as root):
$ make
# make install
Running sic
-----------
Simply invoke the `sic` command with the required arguments.

63
arg.h
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@ -1,63 +0,0 @@
/*
* Copy me if you can.
* by 20h
*/
#ifndef ARG_H__
#define ARG_H__
extern char *argv0;
/* use main(int argc, char *argv[]) */
#define ARGBEGIN for (argv0 = *argv, argv++, argc--;\
argv[0] && argv[0][1]\
&& argv[0][0] == '-';\
argc--, argv++) {\
char argc_;\
char **argv_;\
int brk_;\
if (argv[0][1] == '-' && argv[0][2] == '\0') {\
argv++;\
argc--;\
break;\
}\
for (brk_ = 0, argv[0]++, argv_ = argv;\
argv[0][0] && !brk_;\
argv[0]++) {\
if (argv_ != argv)\
break;\
argc_ = argv[0][0];\
switch (argc_)
/* Handles obsolete -NUM syntax */
#define ARGNUM case '0':\
case '1':\
case '2':\
case '3':\
case '4':\
case '5':\
case '6':\
case '7':\
case '8':\
case '9'
#define ARGEND }\
}
#define ARGC() argc_
#define ARGNUMF(base) (brk_ = 1, estrtol(argv[0], (base)))
#define EARGF(x) ((argv[0][1] == '\0' && argv[1] == NULL)?\
((x), abort(), (char *)0) :\
(brk_ = 1, (argv[0][1] != '\0')?\
(&argv[0][1]) :\
(argc--, argv++, argv[0])))
#define ARGF() ((argv[0][1] == '\0' && argv[1] == NULL)?\
(char *)0 :\
(brk_ = 1, (argv[0][1] != '\0')?\
(&argv[0][1]) :\
(argc--, argv++, argv[0])))
#endif

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/* Host used when "-h" is not given */
#define DEFAULT_HOST "iiiypuk.me"
/* Port used when "-p" is not given */
#define DEFAULT_PORT "6667"
/* Timestamp format; see strftime(3). */
#define TIMESTAMP_FORMAT "%Y-%m-%d %R"
/* Command prefix character. In most IRC clients this is '/'. */
#define COMMAND_PREFIX_CHARACTER ':'
/* Parting message used when none is specified with ":l ..." command. */
#define DEFAULT_PARTING_MESSAGE "sic - 250 LOC are too much!"

22
config.mk Normal file
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# sic version
VERSION = 0.8
# Customize below to fit your system
# paths
PREFIX = /usr/local
MANPREFIX = ${PREFIX}/share/man
# includes and libs
INCS = -I. -I/usr/include
LIBS = -L/usr/lib -lc
# flags
CFLAGS = -Os ${INCS} -DVERSION=\"${VERSION}\"
LDFLAGS = ${LIBS}
#CFLAGS = -g -Wall -O2 ${INCS} -DVERSION=\"${VERSION}\"
#LDFLAGS = -g ${LIBS}
# compiler and linker
CC = cc
LD = ${CC}

61
sic.1
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@ -3,52 +3,53 @@
sic \- simple irc client
.SH SYNOPSIS
.B sic
.RB [ \-h
.IR host ]
.RB [ \-p
.IR port ]
.RB [ \-n
.IR nick ]
.RB [ \-k
.IR pass ]
.RB [ \-s " <server>"]
.RB [ \-p " <port>"]
.RB [ \-n " <nick>"]
.RB [ \-k " <keyword>"]
.RB [ \-f " <fullname>"]
.RB [ \-v ]
.SH DESCRIPTION
.B sic
is an extremely fast, small and simple irc client. It reads commands from
standard input and prints all server output to standard output. It also
multiplexes all channel traffic into one output. That way you don't have to
switch different channel buffers. So that's actually a feature.
is an extremly fast, small and simple irc client. It reads commands from
standard input and prints all server output to standard output. It multiplexes
also all channel traffic into one output, that you don't have to switch
different channel buffers, that's actually a feature.
.SH OPTIONS
.TP
.BI \-h " host"
Overrides the default host (irc.oftc.net)
.B \-s <server>
Overrides the default server (irc.oftc.net)
.TP
.BI \-p " port"
.B \-p <port>
Overrides the default port (6667)
.TP
.BI \-n " nick"
.B \-n <nickname>
Override the default nick ($USER)
.TP
.BI \-k " pass"
Specifies the PASS connection password
.B \-k <keyword>
Specifies the keyword to authenticate your nick on the server
.TP
.B \-v
Prints version information to stderr, then exits
.B \-f <fullname>
Specify the real name (default is $USER)
.TP
.BI \-v
Prints version information to standard output, then exits.
.SH COMMANDS
.TP
.BI :j " #channel"
.B /j #channel
Join a channel
.TP
.BI :l " #channel"
.B /l #channel
Leave a channel
.TP
.BI :m " #channel/user message"
Send a message to channel or user
.B /m #channel/user msg
Write a message to #channel/user
.TP
.BI :s " #channel/user"
Set default channel or user
.B /s #channel/user
Set default channel/user
.TP
.BI : command
Any line beginning with
.B :
is sent as a command
.B /t topic
Set the channel topic
.TP
Everything which is not a command will simply be posted into the channel or to
the server.

429
sic.c
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@ -1,222 +1,327 @@
/* See LICENSE file for license details. */
#include <sys/select.h>
#include <ctype.h>
/* (C)opyright MMV-MMVI Anselm R. Garbe <garbeam at gmail dot com>
* (C)opyright MMV-MMVI Nico Golde <nico at ngolde dot de>
* See LICENSE file for license details.
*/
#include <errno.h>
#include <stdarg.h>
#include <netdb.h>
#include <netinet/in.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <sys/socket.h>
#include <sys/time.h>
#include "arg.h"
#include "config.h"
#define PINGTIMEOUT 300
#define MAXMSG 4096
char *argv0;
static char *host = DEFAULT_HOST;
static char *port = DEFAULT_PORT;
static char *password;
static char nick[32];
static char bufin[4096];
static char bufout[4096];
enum { Tnick, Tuser, Tcmd, Tchan, Targ, Ttext, Tlast };
static char *server = "irc.oftc.net";
static unsigned short port = 6667;
static char *nick = NULL;
static char *fullname = NULL;
static char *password = NULL;
static char bufin[MAXMSG], bufout[MAXMSG];
static char channel[256];
static int srv;
static time_t trespond;
static FILE *srv;
#undef strlcpy
#include "strlcpy.c"
#include "util.c"
static int
getline(int fd, unsigned int len, char *buf) {
unsigned int i = 0;
char c;
static void
pout(char *channel, char *fmt, ...) {
static char timestr[80];
time_t t;
va_list ap;
va_start(ap, fmt);
vsnprintf(bufout, sizeof bufout, fmt, ap);
va_end(ap);
t = time(NULL);
strftime(timestr, sizeof timestr, TIMESTAMP_FORMAT, localtime(&t));
fprintf(stdout, "%-12s: %s %s\n", channel, timestr, bufout);
do {
if(read(fd, &c, sizeof(char)) != sizeof(char))
return -1;
buf[i++] = c;
}
while(c != '\n' && i < len);
buf[i - 1] = 0;
return 0;
}
static void
sout(char *fmt, ...) {
va_list ap;
pout(char *channel, char *msg) {
static char timestr[18];
time_t t = time(0);
va_start(ap, fmt);
vsnprintf(bufout, sizeof bufout, fmt, ap);
va_end(ap);
fprintf(srv, "%s\r\n", bufout);
strftime(timestr, sizeof timestr, "%F %R", localtime(&t));
fprintf(stdout, "%-8.8s: %s %s\n", channel, timestr, msg);
}
static void
privmsg(char *channel, char *msg) {
if(channel[0] == '\0') {
pout("", "No channel to send to");
return;
}
pout(channel, "<%s> %s", nick, msg);
sout("PRIVMSG %s :%s", channel, msg);
snprintf(bufout, sizeof bufout, "<%s> %s", nick, msg);
pout(channel, bufout);
snprintf(bufout, sizeof bufout, "PRIVMSG %s :%s\r\n", channel, msg);
write(srv, bufout, strlen(bufout));
}
static void
parsein(char *s) {
char c, *p;
parsein(char *msg) {
char *p;
if(s[0] == '\0')
if(msg[0] == 0)
return;
skip(s, '\n');
if(s[0] != COMMAND_PREFIX_CHARACTER) {
privmsg(channel, s);
if(msg[0] != '/') {
privmsg(channel, msg);
return;
}
c = *++s;
if(c != '\0' && isspace((unsigned char)s[1])) {
p = s + 2;
switch(c) {
case 'j':
sout("JOIN %s", p);
if(channel[0] == '\0')
strlcpy(channel, p, sizeof channel);
return;
case 'l':
s = eat(p, isspace, 1);
p = eat(s, isspace, 0);
if(!*s)
s = channel;
if(*p)
*p++ = '\0';
if(!*p)
p = DEFAULT_PARTING_MESSAGE;
sout("PART %s :%s", s, p);
return;
case 'm':
s = eat(p, isspace, 1);
p = eat(s, isspace, 0);
if(*p)
*p++ = '\0';
privmsg(s, p);
return;
case 's':
strlcpy(channel, p, sizeof channel);
if(!strncmp(msg + 1, "j ", 2) && (msg[3] == '#'))
snprintf(bufout, sizeof bufout, "JOIN %s\r\n", &msg[3]);
else if(!strncmp(msg + 1, "l ", 2))
snprintf(bufout, sizeof bufout, "PART %s :sic\r\n", &msg[3]);
else if(!strncmp(msg + 1, "m ", 2)) {
if((p = strchr(&msg[3], ' ')))
*(p++) = 0;
privmsg(&msg[3], p);
return;
}
else if(!strncmp(msg + 1, "s ", 2)) {
strncpy(channel, &msg[3], sizeof channel);
return;
}
else if(!strncmp(msg + 1, "t ", 2)) {
if((p = strchr(&msg[3], ' ')))
*(p++) = 0;
snprintf(bufout, sizeof bufout, "TOPIC %s :%s\r\n", &msg[3], p);
}
else
snprintf(bufout, sizeof bufout, "%s\r\n", &msg[1]);
write(srv, bufout, strlen(bufout));
}
static unsigned int
tokenize(char **result, unsigned int reslen, char *str, char delim) {
char *p, *n;
unsigned int i = 0;
if(!str)
return 0;
for(n = str; *n == delim; n++);
p = n;
for(i = 0; *n != 0;) {
if(i == reslen)
return i;
if(*n == delim) {
*n = 0;
if(strlen(p))
result[i++] = p;
p = ++n;
} else
n++;
}
if((i < reslen) && (p < n) && strlen(p))
result[i++] = p;
return i; /* number of tokens */
}
static void
parsesrv(char *msg) {
char *argv[Tlast], *cmd, *p;
int i;
if(!msg || !(*msg))
return;
for(i = 0; i < Tlast; i++)
argv[i] = NULL;
/* <bufout> ::= [':' <prefix> <SPACE> ] <command> <params> <crlf>
* <prefix> ::= <servername> | <nick> [ '!' <user> ] [ '@' <server> ]
* <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(msg[0] == ':') { /* check prefix */
if (!(p = strchr(msg, ' ')))
return;
*p = 0;
for(++p; *p == ' '; p++);
cmd = p;
argv[Tnick] = &msg[1];
if((p = strchr(msg, '!'))) {
*p = 0;
argv[Tuser] = ++p;
}
} else
cmd = msg;
/* remove CRLFs */
for(p = cmd; p && *p != 0; p++)
if(*p == '\r' || *p == '\n')
*p = 0;
if((p = strchr(cmd, ':'))) {
*p = 0;
argv[Ttext] = ++p;
}
sout("%s", s);
}
static void
parsesrv(char *cmd) {
char *usr, *par, *txt;
usr = host;
if(!cmd || !*cmd)
tokenize(&argv[Tcmd], Tlast - Tcmd, cmd, ' ');
if(!argv[Tcmd] || !strncmp("PONG", argv[Tcmd], 5))
return;
if(cmd[0] == ':') {
usr = cmd + 1;
cmd = skip(usr, ' ');
if(cmd[0] == '\0')
return;
skip(usr, '!');
}
skip(cmd, '\r');
par = skip(cmd, ' ');
txt = skip(par, ':');
trim(par);
if(!strcmp("PONG", cmd))
else if(!strncmp("PING", argv[Tcmd], 5)) {
snprintf(bufout, sizeof bufout, "PONG %s\r\n", argv[Ttext]);
write(srv, bufout, strlen(bufout));
return;
if(!strcmp("PRIVMSG", cmd))
pout(par, "<%s> %s", usr, txt);
else if(!strcmp("PING", cmd))
sout("PONG %s", txt);
else {
pout(usr, ">< %s (%s): %s", cmd, par, txt);
if(!strcmp("NICK", cmd) && !strcmp(usr, nick))
strlcpy(nick, txt, sizeof nick);
}
}
static void
usage(void) {
eprint("usage: sic [-h host] [-p port] [-n nick] [-k keyword] [-v]\n", argv0);
else if(!argv[Tnick] || !argv[Tuser]) { /* server command */
snprintf(bufout, sizeof bufout, "%s", argv[Ttext] ? argv[Ttext] : "");
pout(server, bufout);
return;
}
else if(!strncmp("ERROR", argv[Tcmd], 6))
snprintf(bufout, sizeof bufout, "-!- error %s",
argv[Ttext] ? argv[Ttext] : "unknown");
else if(!strncmp("JOIN", argv[Tcmd], 5)) {
if(argv[Ttext]!=NULL){
p = strchr(argv[Ttext], ' ');
if(p)
*p = 0;
}
argv[Tchan] = argv[Ttext];
snprintf(bufout, sizeof bufout, "-!- %s(%s) has joined %s",
argv[Tnick], argv[Tuser], argv[Ttext]);
}
else if(!strncmp("PART", argv[Tcmd], 5)) {
snprintf(bufout, sizeof bufout, "-!- %s(%s) has left %s",
argv[Tnick], argv[Tuser], argv[Tchan]);
}
else if(!strncmp("MODE", argv[Tcmd], 5))
snprintf(bufout, sizeof bufout, "-!- %s changed mode/%s -> %s %s",
argv[Tnick], argv[Tcmd + 1] ? argv[Tcmd + 1] : "",
argv[Tcmd + 2] ? argv[Tcmd + 2] : "",
argv[Tcmd + 3] ? argv[Tcmd + 3] : "");
else if(!strncmp("QUIT", argv[Tcmd], 5))
snprintf(bufout, sizeof bufout, "-!- %s(%s) has quit \"%s\"",
argv[Tnick], argv[Tuser],
argv[Ttext] ? argv[Ttext] : "");
else if(!strncmp("NICK", argv[Tcmd], 5))
snprintf(bufout, sizeof bufout, "-!- %s changed nick to %s",
argv[Tnick], argv[Ttext]);
else if(!strncmp("TOPIC", argv[Tcmd], 6))
snprintf(bufout, sizeof bufout, "-!- %s changed topic to \"%s\"",
argv[Tnick], argv[Ttext] ? argv[Ttext] : "");
else if(!strncmp("KICK", argv[Tcmd], 5))
snprintf(bufout, sizeof bufout, "-!- %s kicked %s (\"%s\")",
argv[Tnick], argv[Targ],
argv[Ttext] ? argv[Ttext] : "");
else if(!strncmp("NOTICE", argv[Tcmd], 7))
snprintf(bufout, sizeof bufout, "-!- \"%s\")",
argv[Ttext] ? argv[Ttext] : "");
else if(!strncmp("PRIVMSG", argv[Tcmd], 8))
snprintf(bufout, sizeof bufout, "<%s> %s",
argv[Tnick], argv[Ttext] ? argv[Ttext] : "");
if(!argv[Tchan] || !strncmp(argv[Tchan], nick, strlen(nick)))
pout(argv[Tnick], bufout);
else
pout(argv[Tchan], bufout);
}
int
main(int argc, char *argv[]) {
int i;
struct timeval tv;
const char *user = getenv("USER");
int n;
struct hostent *hp;
static struct sockaddr_in addr; /* initially filled with 0's */
char ping[256];
fd_set rd;
strlcpy(nick, user ? user : "unknown", sizeof nick);
ARGBEGIN {
case 'h':
host = EARGF(usage());
break;
case 'p':
port = EARGF(usage());
break;
case 'n':
strlcpy(nick, EARGF(usage()), sizeof nick);
break;
case 'k':
password = EARGF(usage());
break;
case 'v':
eprint("sic-"VERSION", © 2005-2017 Anselm R Garbe, Jeroen Schot, Kris Maglione, Nico Golde\n");
break;
default:
usage();
} ARGEND;
nick = fullname = getenv("USER");
for(i = 1; i < argc; i++)
if(!strncmp(argv[i], "-s", 3)) {
if(++i < argc) server = argv[i];
}
else if(!strncmp(argv[i], "-p", 3)) {
if(++i < argc) port = (unsigned short)atoi(argv[i]);
}
else if(!strncmp(argv[i], "-n", 3)) {
if(++i < argc) nick = argv[i];
}
else if(!strncmp(argv[i], "-k", 3)) {
if(++i < argc) password = argv[i];
}
else if(!strncmp(argv[i], "-f", 3)) {
if(++i < argc) fullname = argv[i];
}
else if(!strncmp(argv[i], "-v", 3)) {
fputs("sic-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
exit(EXIT_SUCCESS);
}
else {
fputs("usage: sic [-s server] [-p port] [-n nick]"
" [-k keyword] [-f fullname] [-v]\n", stderr);
exit(EXIT_FAILURE);
}
/* init */
srv = fdopen(dial(host, port), "r+");
if (!srv)
eprint("fdopen:");
if((srv = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
fprintf(stderr, "sic: cannot connect server '%s'\n", server);
exit(EXIT_FAILURE);
}
if (NULL == (hp = gethostbyname(server))) {
fprintf(stderr, "sic: cannot resolve hostname '%s'\n", server);
exit(EXIT_FAILURE);
}
addr.sin_family = AF_INET;
addr.sin_port = htons(port);
memcpy(&addr.sin_addr, hp->h_addr, hp->h_length);
if(connect(srv, (struct sockaddr *) &addr, sizeof(struct sockaddr_in))) {
close(srv);
fprintf(stderr, "sic: cannot connect server '%s'\n", server);
exit(EXIT_FAILURE);
}
/* login */
if(password)
sout("PASS %s", password);
sout("NICK %s", nick);
sout("USER %s localhost %s :%s", nick, host, nick);
fflush(srv);
setbuf(stdout, NULL);
setbuf(srv, NULL);
setbuf(stdin, NULL);
#ifdef __OpenBSD__
if (pledge("stdio", NULL) == -1)
eprint("error: pledge:");
#endif
snprintf(bufout, sizeof bufout,
"PASS %s\r\nNICK %s\r\nUSER %s localhost %s :%s\r\n",
password, nick, nick, server, fullname);
else
snprintf(bufout, sizeof bufout, "NICK %s\r\nUSER %s localhost %s :%s\r\n",
nick, nick, server, fullname);
write(srv, bufout, strlen(bufout));
snprintf(ping, sizeof ping, "PING %s\r\n", server);
channel[0] = 0;
setbuf(stdout, NULL); /* unbuffered stdout */
for(;;) { /* main loop */
FD_ZERO(&rd);
FD_SET(0, &rd);
FD_SET(fileno(srv), &rd);
FD_SET(srv, &rd);
tv.tv_sec = 120;
tv.tv_usec = 0;
n = select(fileno(srv) + 1, &rd, 0, 0, &tv);
if(n < 0) {
i = select(srv + 1, &rd, 0, 0, &tv);
if(i < 0) {
if(errno == EINTR)
continue;
eprint("sic: error on select():");
}
else if(n == 0) {
if(time(NULL) - trespond >= 300)
eprint("sic shutting down: parse timeout\n");
sout("PING %s", host);
perror("sic: error on select()");
exit(EXIT_FAILURE);
} else if(i == 0) {
if(time(NULL) - trespond >= PINGTIMEOUT) {
pout(server, "-!- sic shutting down: parse timeout");
exit(EXIT_FAILURE);
}
write(srv, ping, strlen(ping));
continue;
}
if(FD_ISSET(fileno(srv), &rd)) {
if(fgets(bufin, sizeof bufin, srv) == NULL)
eprint("sic: remote host closed connection\n");
if(FD_ISSET(srv, &rd)) {
if(getline(srv, sizeof bufin, bufin) == -1) {
perror("sic: remote server closed connection");
exit(EXIT_FAILURE);
}
parsesrv(bufin);
trespond = time(NULL);
}
if(FD_ISSET(0, &rd)) {
if(fgets(bufin, sizeof bufin, stdin) == NULL)
eprint("sic: broken pipe\n");
if(getline(0, sizeof bufin, bufin) == -1) {
perror("sic: broken pipe");
exit(EXIT_FAILURE);
}
parsein(bufin);
}
}

View File

@ -1,46 +0,0 @@
/*
* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <string.h>
#include <sys/types.h>
/*
* Copy src to string dst of size siz. At most siz-1 characters
* will be copied. Always NUL terminates (unless siz == 0).
* Returns strlen(src); if retval >= siz, truncation occurred.
*/
size_t
strlcpy(char *dst, const char *src, size_t siz)
{
char *d = dst;
const char *s = src;
size_t n = siz;
/* Copy as many bytes as will fit */
if (n != 0) {
while (--n != 0) {
if ((*d++ = *s++) == '\0')
break;
}
}
/* Not enough room in dst, add NUL and traverse rest of src */
if (n == 0) {
if (siz != 0)
*d = '\0'; /* NUL-terminate dst */
while (*s++)
;
}
return(s - src - 1); /* count does not include NUL */
}

66
util.c
View File

@ -1,66 +0,0 @@
/* See LICENSE file for license details. */
#include <netdb.h>
#include <netinet/in.h>
#include <sys/socket.h>
static void
eprint(const char *fmt, ...) {
va_list ap;
va_start(ap, fmt);
vsnprintf(bufout, sizeof bufout, fmt, ap);
va_end(ap);
fprintf(stderr, "%s", bufout);
if(fmt[0] && fmt[strlen(fmt) - 1] == ':')
fprintf(stderr, " %s\n", strerror(errno));
exit(1);
}
static int
dial(char *host, char *port) {
struct addrinfo hints;
struct addrinfo *res, *r;
int fd;
memset(&hints, 0, sizeof hints);
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
if(getaddrinfo(host, port, &hints, &res) != 0)
eprint("error: cannot resolve hostname '%s':", host);
for(r = res; r; r = r->ai_next) {
if((fd = socket(r->ai_family, r->ai_socktype, r->ai_protocol)) == -1)
continue;
if(connect(fd, r->ai_addr, r->ai_addrlen) == 0)
break;
close(fd);
}
freeaddrinfo(res);
if(!r)
eprint("error: cannot connect to host '%s'\n", host);
return fd;
}
static char *
eat(char *s, int (*p)(int), int r) {
while(*s != '\0' && p((unsigned char)*s) == r)
s++;
return s;
}
static char*
skip(char *s, char c) {
while(*s != c && *s != '\0')
s++;
if(*s != '\0')
*s++ = '\0';
return s;
}
static void
trim(char *s) {
char *e;
for (e = s + strlen(s); e > s && isspace((unsigned char)*(e - 1)); e--)
;
*e = '\0';
}