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/* $Id: bot.c 20 2024-08-30 08:30:21Z nishi $ */
#include "ia_bot.h"
#include "ia_util.h"
#include "ia_db.h"
#include "web_html.h"
#include "ircfw.h"
#include <signal.h>
#include <stdbool.h>
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <string.h>
#include <strings.h>
#include <sys/stat.h>
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#define IRCARC_VERSION "1.01"
const char* ircarc_version = IRCARC_VERSION;
int ia_sock;
struct sockaddr_in ia_addr;
bool ia_do_log = false;
void ia_log(const char* txt) {
if(!ia_do_log) return;
fprintf(stderr, "%s\n", txt);
}
extern char* host;
extern char* admin;
extern char* realname;
extern char* nickname;
extern char* username;
extern char* password;
extern char* nickserv;
extern char* webroot;
extern char* channels[];
extern int port;
void ia_close(int sock) { close(sock); }
const char* ia_null(const char* str) {
if(str == NULL) return "(null)";
return str;
}
bool ia_is_number(const char* str) {
int i;
for(i = 0; str[i] != 0; i++) {
if(!('0' <= str[i] && str[i] <= '9')) return false;
}
return true;
}
bool loop = true;
void ia_bot_kill(int sig) {
ia_log("Shutdown");
ircfw_socket_send_cmd(ia_sock, NULL, "QUIT :Shutdown (Signal)");
exit(1);
}
void ia_bot_loop(void) {
if((ia_sock = socket(PF_INET, SOCK_STREAM, 0)) < 0) {
ia_log("Socket creation failure");
return;
}
loop = true;
int yes = 1;
if(setsockopt(ia_sock, IPPROTO_TCP, TCP_NODELAY, (char*)&yes, sizeof(yes)) < 0) {
ia_log("setsockopt failure");
ia_close(ia_sock);
return;
}
bzero((char*)&ia_addr, sizeof(ia_addr));
ia_addr.sin_family = PF_INET;
ia_addr.sin_addr.s_addr = inet_addr(host);
ia_addr.sin_port = htons(port);
if(connect(ia_sock, (struct sockaddr*)&ia_addr, sizeof(ia_addr)) < 0) {
ia_log("Connection failure");
ia_close(ia_sock);
return;
}
signal(SIGINT, ia_bot_kill);
signal(SIGTERM, ia_bot_kill);
char* construct = malloc(1025);
if(password != NULL && strlen(password) > 0) {
sprintf(construct, "PASS :%s", password);
ircfw_socket_send_cmd(ia_sock, NULL, construct);
}
sprintf(construct, "USER %s %s %s :%s", username, username, username, realname);
ircfw_socket_send_cmd(ia_sock, NULL, construct);
sprintf(construct, "NICK :%s", nickname);
ircfw_socket_send_cmd(ia_sock, NULL, construct);
bool is_in = false;
while(loop) {
int st = ircfw_socket_read_cmd(ia_sock);
if(st != 0) {
ia_log("Bad response");
return;
}
if(strlen(ircfw_message.command) == 3 && ia_is_number(ircfw_message.command)) {
int res = atoi(ircfw_message.command);
if(!is_in && 400 <= res && res <= 599) {
ia_log("Bad response");
return;
} else if(400 <= res && res <= 599) {
sprintf(construct, "Ignored error: %d", res);
ia_log(construct);
continue;
}
if(res == 376) {
is_in = true;
ia_log("Login successful");
int i;
for(i = 0; channels[i] != NULL; i++) {
sprintf(construct, "JOIN :%s", channels[i]);
ircfw_socket_send_cmd(ia_sock, NULL, construct);
}
sprintf(construct, "NOTICE %s :IRC-Archiver %s is ready to accept requests", admin, IRCARC_VERSION);
ircfw_socket_send_cmd(ia_sock, NULL, construct);
if(nickserv != NULL) {
sprintf(construct, "PRIVMSG NickServ :%s", nickserv);
ircfw_socket_send_cmd(ia_sock, NULL, construct);
}
}
} else {
if(strcasecmp(ircfw_message.command, "PING") == 0) {
ia_log("Ping request");
sprintf(construct, "PONG :%s", ia_null(ircfw_message.prefix));
ircfw_socket_send_cmd(ia_sock, NULL, construct);
} else if(strcasecmp(ircfw_message.command, "PRIVMSG") == 0) {
char* prefix = ircfw_message.prefix;
char** params = ircfw_message.params;
int i;
int len = 0;
if(params != NULL) {
for(i = 0; params[i] != NULL; i++)
;
len = i;
}
if(prefix != NULL && len == 2) {
char* sentin = params[0];
char* msg = params[1];
char* nick = ia_strdup(prefix);
for(i = 0; nick[i] != 0; i++) {
if(nick[i] == '!') {
nick[i] = 0;
break;
}
}
if(msg[0] == 1 && msg[strlen(msg) - 1] == 1) {
/* CTCP */
if(strcasecmp(msg, "\x01VERSION\x01") == 0) {
sprintf(construct, "NOTICE %s :\x01VERSION IRC-Archiver %s / IRC Frameworks %s: http://nishi.boats/ircarc\x01", nick, IRCARC_VERSION, IRCFW_VERSION);
ircfw_socket_send_cmd(ia_sock, NULL, construct);
}
} else if(sentin[0] == '#') {
/* This was sent in channel ; log it */
ia_db_put(nick, sentin, msg);
} else {
/* Command, I guess */
int i;
char* name = NULL;
char* chn = NULL;
char* frm = NULL;
char* to = NULL;
char* prm = ia_strdup(msg);
int incr = 0;
int t = 0;
for(i = 0;; i++) {
if(prm[i] == ' ' || prm[i] == 0) {
char oldc = prm[i];
prm[i] = 0;
if(strcasecmp(prm, "help") == 0) {
sprintf(construct, "PRIVMSG %s :HELP Show this help", nick);
ircfw_socket_send_cmd(ia_sock, NULL, construct);
sprintf(construct, "PRIVMSG %s :SHUTDOWN Shutdown the bot", nick);
ircfw_socket_send_cmd(ia_sock, NULL, construct);
sprintf(construct, "PRIVMSG %s :ARCHIVE [name] [channel] <yyyy-mm-dd-hh:mm:ss> <yyyy-mm-dd-hh:mm:ss> Archive the log", nick);
ircfw_socket_send_cmd(ia_sock, NULL, construct);
} else if(strcasecmp(prm, "archive") == 0) {
if(strcmp(admin, nick) == 0) {
if(t <= 4 && t != 0) {
char* p = prm + incr;
if(t == 1) {
name = p;
} else if(t == 2) {
chn = p;
} else if(t == 3) {
frm = p;
} else if(t == 4) {
to = p;
}
}
if(oldc == 0) {
if(chn == NULL) {
sprintf(construct, "PRIVMSG %s :Insufficient arguments", nick);
ircfw_socket_send_cmd(ia_sock, NULL, construct);
} else if(strcmp(name, "index") == 0) {
sprintf(construct, "PRIVMSG %s :You cannot use that name", nick);
ircfw_socket_send_cmd(ia_sock, NULL, construct);
} else {
web_range_t range;
struct tm from_tm;
memset(&from_tm, 0, sizeof(from_tm));
struct tm to_tm;
memset(&to_tm, 0, sizeof(to_tm));
time_t tfrom = 0;
time_t tto = 0;
if(frm != NULL) {
if(strptime(frm, "%Y/%m/%d-%H:%M:%S", &from_tm) == NULL) {
sprintf(construct, "PRIVMSG %s :Date parsing failure", nick);
ircfw_socket_send_cmd(ia_sock, NULL, construct);
break;
}
tfrom = mktime(&from_tm);
}
if(to != NULL) {
if(strptime(to, "%Y/%m/%d-%H:%M:%S", &to_tm) == NULL) {
sprintf(construct, "PRIVMSG %s :Date parsing failure", nick);
ircfw_socket_send_cmd(ia_sock, NULL, construct);
break;
}
tto = mktime(&to_tm);
}
char* hpath = ia_strcat4(webroot, "/", name, ".html");
struct stat s;
if(stat(hpath, &s) == 0) {
sprintf(construct, "PRIVMSG %s :Archive which has the same name already exists", nick);
ircfw_socket_send_cmd(ia_sock, NULL, construct);
break;
}
int j;
bool found = false;
for(j = 0; channels[j] != NULL; j++) {
if(strcmp(channels[j], chn) == 0) {
found = true;
break;
}
}
if(!found) {
sprintf(construct, "PRIVMSG %s :I do not know the channel", nick);
ircfw_socket_send_cmd(ia_sock, NULL, construct);
break;
}
range.from = tfrom;
range.to = tto;
range.channel = chn;
web_html_generate(name, range);
}
}
} else {
sprintf(construct, "PRIVMSG %s :You must be an admin to use this", nick);
ircfw_socket_send_cmd(ia_sock, NULL, construct);
break;
}
} else if(strcasecmp(prm, "shutdown") == 0) {
if(strcmp(admin, nick) == 0) {
loop = false;
} else {
sprintf(construct, "PRIVMSG %s :You must be an admin to use this", nick);
ircfw_socket_send_cmd(ia_sock, NULL, construct);
}
break;
} else {
sprintf(construct, "PRIVMSG %s :Unknown command `%s'. See HELP.", nick, prm);
ircfw_socket_send_cmd(ia_sock, NULL, construct);
break;
}
incr = i + 1;
t++;
if(oldc == 0) break;
}
}
free(prm);
}
free(nick);
}
}
}
}
ircfw_socket_send_cmd(ia_sock, NULL, "QUIT :Shutdown");
free(construct);
}