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libircclient/examples/censor.cpp

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2023-08-07 04:58:04 -04:00
/*
* Copyright (C) 2004-2009 Georgy Yunaev gyunaev@ulduzsoft.com
*
* This example is free, and not covered by LGPL license. There is no
* restriction applied to their modification, redistribution, using and so on.
* You can study them, modify them, use them in your own program - either
* completely or partially. By using it you may give me some credits in your
* program, but you don't have to.
*
*
* This example 'guards' the channel against using abusive language. When
* someone says a bad word, it takes some action against him/her, taking
* in account the number of times the person uses it. The first time, it just
* warns the person through a private message, the second time it warns him
* publically in channel, and after the second time it will kicks the insolent
* out of the channel.
*
* To keep it simple, this example reacts only on 'fuck' word, however
* is is easy to add more.
*
* Features used:
* - nickname parsing;
* - handling 'channel' event to track the messages;
* - handling 'nick' event to track nickname changes;
* - generating channel and private messages, and kicking.
*/
#include <map>
#include <string>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#if !defined (_WIN32)
#include <unistd.h>
#endif
#include "libircclient.h"
/*
* We store data in IRC session context.
*/
typedef struct
{
char * channel;
char * nick;
std::map <std::string, unsigned int> insolents;
} irc_ctx_t;
void event_connect (irc_session_t * session, const char * event, const char * origin, const char ** params, unsigned int count)
{
irc_ctx_t * ctx = (irc_ctx_t *) irc_get_ctx (session);
irc_cmd_join (session, ctx->channel, 0);
}
void event_nick (irc_session_t * session, const char * event, const char * origin, const char ** params, unsigned int count)
{
char nickbuf[128];
irc_ctx_t * ctx = (irc_ctx_t *) irc_get_ctx (session);
if ( !origin || count != 1 )
return;
irc_target_get_nick (origin, nickbuf, sizeof(nickbuf));
if ( ctx->insolents.find(nickbuf) != ctx->insolents.end() )
{
printf ("%s has changed its nick to %s to prevent penalties - no way!\n",
nickbuf, params[0]);
ctx->insolents[params[0]] = ctx->insolents[nickbuf];
ctx->insolents.erase (nickbuf);
}
}
void event_channel (irc_session_t * session, const char * event, const char * origin, const char ** params, unsigned int count)
{
irc_ctx_t * ctx = (irc_ctx_t *) irc_get_ctx (session);
if ( !origin || count != 2 )
return;
if ( strstr (params[1], "fuck") == 0 )
return;
char nickbuf[128], text[256];
irc_target_get_nick (origin, nickbuf, sizeof(nickbuf));
if ( ctx->insolents.find(nickbuf) == ctx->insolents.end() )
ctx->insolents[nickbuf] = 0;
ctx->insolents[nickbuf]++;
printf ("'%s' swears in the channel '%s' %d times\n",
nickbuf,
params[1],
ctx->insolents[nickbuf]);
switch (ctx->insolents[nickbuf])
{
case 1:
// Send a private message
sprintf (text, "%s, please do not swear in this channel.", nickbuf);
irc_cmd_msg (session, nickbuf, text);
break;
case 2:
// Send a channel message
sprintf (text, "%s, do not swear in this channel, or you'll leave it.", nickbuf);
irc_cmd_msg (session, params[0], text);
break;
default:
// Send a channel notice, and kick the insolent
sprintf (text, "kicked %s from %s for swearing.", nickbuf, params[0]);
irc_cmd_me (session, params[0], text);
irc_cmd_kick (session, nickbuf, params[0], "swearing");
break;
}
}
void event_numeric (irc_session_t * session, unsigned int event, const char * origin, const char ** params, unsigned int count)
{
if ( event > 400 )
{
std::string fulltext;
for ( unsigned int i = 0; i < count; i++ )
{
if ( i > 0 )
fulltext += " ";
fulltext += params[i];
}
printf ("ERROR %d: %s: %s\n", event, origin ? origin : "?", fulltext.c_str());
}
}
int main (int argc, char **argv)
{
irc_callbacks_t callbacks;
irc_ctx_t ctx;
unsigned short port = 6667;
if ( argc != 4 )
{
printf ("Usage: %s <[#]server[:port]> <nick> <channel>\n", argv[0]);
return 1;
}
// Initialize the callbacks
memset (&callbacks, 0, sizeof(callbacks));
// Set up the callbacks we will use
callbacks.event_connect = event_connect;
callbacks.event_channel = event_channel;
callbacks.event_nick = event_nick;
callbacks.event_numeric = event_numeric;
// And create the IRC session; 0 means error
irc_session_t * s = irc_create_session (&callbacks);
if ( !s )
{
printf ("Could not create IRC session\n");
return 1;
}
ctx.channel = argv[3];
ctx.nick = argv[2];
irc_set_ctx (s, &ctx);
// If the port number is specified in the server string, use the port 0 so it gets parsed
if ( strchr( argv[1], ':' ) != 0 )
port = 0;
// To handle the "SSL certificate verify failed" from command line we allow passing ## in front
// of the server name, and in this case tell libircclient not to verify the cert
if ( argv[1][0] == '#' && argv[1][1] == '#' )
{
// Skip the first character as libircclient needs only one # for SSL support, i.e. #irc.freenode.net
argv[1]++;
irc_option_set( s, LIBIRC_OPTION_SSL_NO_VERIFY );
}
// Initiate the IRC server connection
if ( irc_connect (s, argv[1], port, 0, argv[2], 0, 0) )
{
printf ("Could not connect: %s\n", irc_strerror (irc_errno(s)));
return 1;
}
// and run into forever loop, generating events
if ( irc_run (s) )
{
printf ("Could not connect or I/O error: %s\n", irc_strerror (irc_errno(s)));
return 1;
}
return 0;
}