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quote-bot/spammer.c
Bubblegumdrop 60dbee40e3 Initial code commit. 
It doesn't do anything useful.
2021-03-08 16:59:27 -05:00

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/* code adapted from:
* <https://gist.github.com/enile8/2424514>
* <https://www.rosettacode.org/wiki/Write_entire_file#C>
* <https://rosettacode.org/wiki/Read_entire_file#C>
* libircclient-1.10/examples/spammer.c
*
* Copyright (C) 2004-2009 Georgy Yunaev gyunaev@ulduzsoft.com
* Copyright (C) 2021 Bubblegumdrop <Bubblegumdrop@lain.church>
*
* 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.
*
* DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
* Version 2, December 2004
*
* Copyright (C) 2004 Sam Hocevar <sam@hocevar.net>
* Copyright (C) 2021 Bubblegumdrop <Bubblegumdrop@lain.church>
*
* Everyone is permitted to copy and distribute verbatim or modified
* copies of this license document, and changing it is allowed as long
* as the name is changed.
*
* DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
* TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
*
* 0. You just DO WHAT THE FUCK YOU WANT TO.
*
* Quote bot. WIP.
*/
#define _XOPEN_SOURCE 500 /* strdup */
#define _POSIX_C_SOURCE 200809L /* strtok_r, strndup */
#include <string.h>
#include <assert.h> /* assert */
#include <errno.h>
#include <stdio.h> /* size_t */
#include <stdlib.h> /* malloc */
/* TODO: libircclient for basic IRC functionality.
* Perhaps a database backend and a client frontend that's separate. */
#if defined (_WIN32)
#include <windows.h>
#define CREATE_THREAD(id,func,param) (CreateThread(0, 0, func, param, 0, id) == 0)
#define THREAD_FUNCTION(funcname) static DWORD WINAPI funcname (LPVOID arg)
#define thread_id_t DWORD
#define sleep(a) Sleep (a*1000)
#else
#include <unistd.h>
#include <pthread.h>
#define CREATE_THREAD(id,func,param) (pthread_create (id, 0, func, (void *) param) != 0)
#define THREAD_FUNCTION(funcname) static void * funcname (void * arg)
#define thread_id_t pthread_t
#endif
#include "libircclient.h"
#ifndef UNUSED
#define UNUSED(x) (void)(x)
#endif
/*
* We store data in IRC session context.
*/
typedef struct {
char *channel;
char *nick;
} irc_ctx_t;
/*
* Params that we give to our threads.
*/
typedef struct {
irc_session_t *session;
const char *phrase;
const char *channel;
int timer;
} spam_params_t;
#include "db.c"
/* <https://rosettacode.org/wiki/Levenshtein_distance#C>
* TODO: use this for quote duplicate removal */
int dist(const char *s, const char *t, int *d, int ls, int lt, int i, int j) {
int x, y;
if (*(d + i * ls + j) >= 0)
return *(d + i * ls + j);
if (i == ls)
x = lt - j;
else if (j == lt)
x = ls - i;
else if (s[i] == t[j])
x = dist(s, t, d, ls, lt, i + 1, j + 1);
else {
x = dist(s, t, d, ls, lt, i + 1, j + 1);
if ((y = dist(s, t, d, ls, lt, i, j + 1)) < x)
x = y;
if ((y = dist(s, t, d, ls, lt, i + 1, j)) < x)
x = y;
x++;
}
return *(d + i * ls + j) = x;
}
int levenshtein(const char *s, const char *t) {
int i, j, n;
int ls = strnlen(s, 128), lt = strnlen(t, 128);
int *d;
d = malloc(sizeof(int) * ((ls + 1) * (lt + 1)));
for (i = 0; i <= ls; i++)
for (j = 0; j <= lt; j++)
*(d + i * ls + j) = -1;
n = dist(s, t, d, ls, lt, 0, 0);
free(d);
d = NULL;
return n;
}
THREAD_FUNCTION(gen_spam) {
spam_params_t *sp = (spam_params_t *) arg;
while (1) {
if (irc_cmd_msg(sp->session, sp->channel, sp->phrase))
break;
sleep(sp->timer);
}
return 0;
}
void event_join(irc_session_t * session, const char *event, const char *origin, const char **params, unsigned int count) {
irc_ctx_t *ctx;
UNUSED(count);
UNUSED(event);
if (!origin)
return;
ctx = (irc_ctx_t *) irc_get_ctx(session);
/*
* We need to know whether WE are joining the channel, or someone else.
* To do this, we compare the origin with our nick.
* Note that we have set LIBIRC_OPTION_STRIPNICKS to obtain 'parsed' nicks.
*/
if (!strcmp(origin, ctx->nick)) {
static spam_params_t spam1;
static spam_params_t spam2;
static spam_params_t spam3;
thread_id_t tid;
spam1.session = spam2.session = spam3.session = session;
spam1.channel = spam2.channel = spam3.channel = ctx->channel;
spam1.phrase = "HEHE";
spam2.phrase = "HAHA";
spam3.phrase = "HUHU";
spam1.timer = 2;
spam2.timer = 3;
spam3.timer = 4;
printf("We just joined the channel %s; starting the spam threads\n", params[1]);
if (CREATE_THREAD(&tid, gen_spam, &spam1)
|| CREATE_THREAD(&tid, gen_spam, &spam2)
|| CREATE_THREAD(&tid, gen_spam, &spam3))
printf("CREATE_THREAD failed: %s\n", strerror(errno));
else
printf("Spammer thread was started successfully.\n");
} else {
char textbuf[168];
sprintf(textbuf, "Hey, %s, hi!", origin);
irc_cmd_msg(session, params[0], textbuf);
}
}
void event_connect(irc_session_t * session, const char *event, const char *origin, const char **params, unsigned int count) {
irc_ctx_t *ctx;
UNUSED(event);
UNUSED(origin);
UNUSED(params);
UNUSED(count);
ctx = (irc_ctx_t *) irc_get_ctx(session);
irc_cmd_join(session, ctx->channel, 0);
}
void event_numeric(irc_session_t * session, unsigned int event, const char *origin, const char **params, unsigned int count) {
UNUSED(session);
UNUSED(origin);
UNUSED(params);
UNUSED(count);
if (event > 400) {
printf("ERROR %d: %s: %s %s %s %s\n", event, origin ? origin : "unknown", params[0], count > 1 ? params[1] : "", count > 2 ? params[2] : "", count > 3 ? params[3] : "");
}
}
int main(int argc, char **argv) {
char *script_filename;
irc_callbacks_t callbacks;
irc_ctx_t ctx;
irc_session_t *s;
unsigned short port = 6667;
const char *s1 = "rosettacode";
const char *s2 = "raisethysword";
printf("distance between `%s' and `%s': %d\n", s1, s2, levenshtein(s1, s2));
/* TODO: getopt */
if (argc == 2) {
script_filename = argv[1];
return test_db(script_filename);
} else {
if (argc != 4) {
printf("Usage: %s <server> <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_join = event_join;
callbacks.event_numeric = event_numeric;
ctx.channel = argv[3];
ctx.nick = argv[2];
/* And create the IRC session; 0 means error */
s = irc_create_session(&callbacks);
if (!s) {
printf("Could not create IRC session\n");
return 1;
}
irc_set_ctx(s, &ctx);
irc_option_set(s, LIBIRC_OPTION_STRIPNICKS);
/* 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 1;
}
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