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4 nishi 1 
/* $Id: bot.c 19 2024-08-30 08:29:36Z nishi $ */
2 
 
3 
#include "ia_bot.h"
4 
 
5 nishi 5 
#include "ia_util.h"
8 nishi 6 
#include "ia_db.h"
5 nishi 7 
 
11 nishi 8 
#include "web_html.h"
9 
 
5 nishi 10 
#include "ircfw.h"
11 
 
12 
#include <signal.h>
4 nishi 13 
#include <stdbool.h>
5 nishi 14 
#include <stdlib.h>
4 nishi 15 
#include <stdio.h>
11 nishi 16 
#include <time.h>
4 nishi 17 
#include <string.h>
17 nishi 18 
#include <strings.h>
5 nishi 19 
#include <unistd.h>
4 nishi 20 
 
21 
#include <sys/socket.h>
22 
#include <netinet/tcp.h>
23 
#include <arpa/inet.h>
24 
 
19 nishi 25 
#define IRCARC_VERSION "1.01"
6 nishi 26 
 
13 nishi 27 
const char* ircarc_version = IRCARC_VERSION;
28 
 
4 nishi 29 
int ia_sock;
5 nishi 30 
struct sockaddr_in ia_addr;
4 nishi 31 
 
32 
bool ia_do_log = false;
33 
 
34 
void ia_log(const char* txt) {
35 
	if(!ia_do_log) return;
36 
	fprintf(stderr, "%s\n", txt);
37 
}
38 
 
39 
extern char* host;
6 nishi 40 
extern char* admin;
5 nishi 41 
extern char* realname;
42 
extern char* nickname;
43 
extern char* username;
44 
extern char* password;
8 nishi 45 
extern char* nickserv;
5 nishi 46 
extern char* channels[];
4 nishi 47 
extern int port;
48 
 
5 nishi 49 
void ia_close(int sock) { close(sock); }
50 
 
51 
const char* ia_null(const char* str) {
52 
	if(str == NULL) return "(null)";
53 
	return str;
54 
}
55 
 
56 
bool ia_is_number(const char* str) {
57 
	int i;
58 
	for(i = 0; str[i] != 0; i++) {
59 
		if(!('0' <= str[i] && str[i] <= '9')) return false;
60 
	}
61 
	return true;
62 
}
63 
 
64 
bool loop = true;
65 
 
66 
void ia_bot_kill(int sig) {
67 
	ia_log("Shutdown");
68 
	ircfw_socket_send_cmd(ia_sock, NULL, "QUIT :Shutdown (Signal)");
69 
	exit(1);
70 
}
71 
 
4 nishi 72 
void ia_bot_loop(void) {
73 
	if((ia_sock = socket(PF_INET, SOCK_STREAM, 0)) < 0) {
74 
		ia_log("Socket creation failure");
75 
		return;
76 
	}
77 
 
5 nishi 78 
	loop = true;
79 
 
4 nishi 80 
	int yes = 1;
81 
 
82 
	if(setsockopt(ia_sock, IPPROTO_TCP, TCP_NODELAY, (char*)&yes, sizeof(yes)) < 0) {
83 
		ia_log("setsockopt failure");
5 nishi 84 
		ia_close(ia_sock);
4 nishi 85 
		return;
86 
	}
87 
 
5 nishi 88 
	bzero((char*)&ia_addr, sizeof(ia_addr));
89 
	ia_addr.sin_family = PF_INET;
90 
	ia_addr.sin_addr.s_addr = inet_addr(host);
91 
	ia_addr.sin_port = htons(port);
4 nishi 92 
 
93 
	if(connect(ia_sock, (struct sockaddr*)&ia_addr, sizeof(ia_addr)) < 0) {
94 
		ia_log("Connection failure");
5 nishi 95 
		ia_close(ia_sock);
96 
		return;
4 nishi 97 
	}
98 
 
5 nishi 99 
	signal(SIGINT, ia_bot_kill);
100 
	signal(SIGTERM, ia_bot_kill);
101 
 
102 
	char* construct = malloc(1025);
103 
 
104 
	if(password != NULL && strlen(password) > 0) {
105 
		sprintf(construct, "PASS :%s", password);
106 
		ircfw_socket_send_cmd(ia_sock, NULL, construct);
107 
	}
108 
 
109 
	sprintf(construct, "USER %s %s %s :%s", username, username, username, realname);
110 
	ircfw_socket_send_cmd(ia_sock, NULL, construct);
111 
 
112 
	sprintf(construct, "NICK :%s", nickname);
113 
	ircfw_socket_send_cmd(ia_sock, NULL, construct);
114 
 
115 
	bool is_in = false;
116 
 
7 nishi 117 
	while(loop) {
5 nishi 118 
		int st = ircfw_socket_read_cmd(ia_sock);
119 
		if(st != 0) {
120 
			ia_log("Bad response");
121 
			return;
122 
		}
123 
		if(strlen(ircfw_message.command) == 3 && ia_is_number(ircfw_message.command)) {
124 
			int res = atoi(ircfw_message.command);
125 
			if(!is_in && 400 <= res && res <= 599) {
126 
				ia_log("Bad response");
127 
				return;
128 
			} else if(400 <= res && res <= 599) {
129 
				sprintf(construct, "Ignored error: %d", res);
130 
				ia_log(construct);
131 
				continue;
132 
			}
133 
			if(res == 376) {
134 
				is_in = true;
135 
				ia_log("Login successful");
136 
				int i;
137 
				for(i = 0; channels[i] != NULL; i++) {
138 
					sprintf(construct, "JOIN :%s", channels[i]);
139 
					ircfw_socket_send_cmd(ia_sock, NULL, construct);
140 
				}
6 nishi 141 
				sprintf(construct, "NOTICE %s :IRC-Archiver %s is ready to accept requests", admin, IRCARC_VERSION);
142 
				ircfw_socket_send_cmd(ia_sock, NULL, construct);
8 nishi 143 
				if(nickserv != NULL) {
144 
					sprintf(construct, "PRIVMSG NickServ :%s", nickserv);
145 
					ircfw_socket_send_cmd(ia_sock, NULL, construct);
146 
				}
5 nishi 147 
			}
148 
		} else {
149 
			if(strcasecmp(ircfw_message.command, "PING") == 0) {
150 
				ia_log("Ping request");
151 
				sprintf(construct, "PONG :%s", ia_null(ircfw_message.prefix));
152 
				ircfw_socket_send_cmd(ia_sock, NULL, construct);
153 
			} else if(strcasecmp(ircfw_message.command, "PRIVMSG") == 0) {
154 
				char* prefix = ircfw_message.prefix;
155 
				char** params = ircfw_message.params;
6 nishi 156 
				int i;
157 
				int len = 0;
158 
				if(params != NULL) {
159 
					for(i = 0; params[i] != NULL; i++)
160 
						;
161 
					len = i;
162 
				}
163 
				if(prefix != NULL && len == 2) {
164 
					char* sentin = params[0];
165 
					char* msg = params[1];
5 nishi 166 
					char* nick = ia_strdup(prefix);
167 
					for(i = 0; nick[i] != 0; i++) {
168 
						if(nick[i] == '!') {
169 
							nick[i] = 0;
170 
							break;
171 
						}
172 
					}
173 
 
6 nishi 174 
					if(msg[0] == 1 && msg[strlen(msg) - 1] == 1) {
175 
						/* CTCP */
176 
						if(strcasecmp(msg, "\x01VERSION\x01") == 0) {
15 nishi 177 
							sprintf(construct, "NOTICE %s :\x01VERSION IRC-Archiver %s / IRC Frameworks %s: http://nishi.boats/ircarc\x01", nick, IRCARC_VERSION, IRCFW_VERSION);
6 nishi 178 
							ircfw_socket_send_cmd(ia_sock, NULL, construct);
179 
						}
180 
					} else if(sentin[0] == '#') {
181 
						/* This was sent in channel ; log it */
8 nishi 182 
						ia_db_put(nick, sentin, msg);
6 nishi 183 
					} else {
184 
						/* Command, I guess */
7 nishi 185 
						int i;
11 nishi 186 
 
187 
						char* name = NULL;
188 
						char* chn = NULL;
189 
						char* frm = NULL;
190 
						char* to = NULL;
191 
 
7 nishi 192 
						char* prm = ia_strdup(msg);
193 
						int incr = 0;
11 nishi 194 
						int t = 0;
7 nishi 195 
						for(i = 0;; i++) {
196 
							if(prm[i] == ' ' || prm[i] == 0) {
197 
								char oldc = prm[i];
198 
								prm[i] = 0;
199 
 
200 
								if(strcasecmp(prm, "help") == 0) {
11 nishi 201 
									sprintf(construct, "PRIVMSG %s :HELP   Show this help", nick);
7 nishi 202 
									ircfw_socket_send_cmd(ia_sock, NULL, construct);
203 
									sprintf(construct, "PRIVMSG %s :SHUTDOWN   Shutdown the bot", nick);
204 
									ircfw_socket_send_cmd(ia_sock, NULL, construct);
11 nishi 205 
									sprintf(construct, "PRIVMSG %s :ARCHIVE [name] [channel] <yyyy-mm-dd-hh:mm:ss> <yyyy-mm-dd-hh:mm:ss>   Archive the log", nick);
206 
									ircfw_socket_send_cmd(ia_sock, NULL, construct);
207 
								} else if(strcasecmp(prm, "archive") == 0) {
208 
									if(strcmp(admin, nick) == 0) {
209 
										if(t <= 4 && t != 0) {
210 
											char* p = prm + incr;
211 
											if(t == 1) {
212 
												name = p;
213 
											} else if(t == 2) {
214 
												chn = p;
215 
											} else if(t == 3) {
216 
												frm = p;
217 
											} else if(t == 4) {
218 
												to = p;
219 
											}
220 
										}
221 
										if(oldc == 0) {
222 
											if(chn == NULL) {
223 
												sprintf(construct, "PRIVMSG %s :Insufficient arguments", nick);
224 
												ircfw_socket_send_cmd(ia_sock, NULL, construct);
18 nishi 225 
											} else if(strcmp(name, "index") == 0) {
226 
												sprintf(construct, "PRIVMSG %s :You cannot use that name", nick);
227 
												ircfw_socket_send_cmd(ia_sock, NULL, construct);
11 nishi 228 
											} else {
229 
												web_range_t range;
230 
												struct tm from_tm;
231 
												memset(&from_tm, 0, sizeof(from_tm));
232 
												struct tm to_tm;
233 
												memset(&to_tm, 0, sizeof(to_tm));
234 
												time_t tfrom = 0;
235 
												time_t tto = 0;
236 
												if(frm != NULL) {
13 nishi 237 
													if(strptime(frm, "%Y/%m/%d-%H:%M:%S", &from_tm) == NULL) {
11 nishi 238 
														sprintf(construct, "PRIVMSG %s :Date parsing failure", nick);
239 
														ircfw_socket_send_cmd(ia_sock, NULL, construct);
240 
														break;
241 
													}
242 
													tfrom = mktime(&from_tm);
243 
												}
244 
												if(to != NULL) {
13 nishi 245 
													if(strptime(to, "%Y/%m/%d-%H:%M:%S", &to_tm) == NULL) {
11 nishi 246 
														sprintf(construct, "PRIVMSG %s :Date parsing failure", nick);
247 
														ircfw_socket_send_cmd(ia_sock, NULL, construct);
248 
														break;
249 
													}
250 
													tto = mktime(&to_tm);
251 
												}
18 nishi 252 
 
253 
												char* hpath = ia_strcat4(webroot, "/", name, ".html");
254 
												struct stat s;
255 
												if(stat(hpath, &s) == 0) {
256 
													sprintf(construct, "PRIVMSG %s :Archive which has the same name already exists", nick);
257 
													ircfw_socket_send_cmd(ia_sock, NULL, construct);
258 
													break;
259 
												}
260 
 
11 nishi 261 
												int j;
262 
												bool found = false;
263 
												for(j = 0; channels[j] != NULL; j++) {
264 
													if(strcmp(channels[j], chn) == 0) {
265 
														found = true;
266 
														break;
267 
													}
268 
												}
269 
												if(!found) {
270 
													sprintf(construct, "PRIVMSG %s :I do not know the channel", nick);
271 
													ircfw_socket_send_cmd(ia_sock, NULL, construct);
272 
													break;
273 
												}
274 
												range.from = tfrom;
275 
												range.to = tto;
276 
												range.channel = chn;
277 
												web_html_generate(name, range);
278 
											}
279 
										}
280 
									} else {
281 
										sprintf(construct, "PRIVMSG %s :You must be an admin to use this", nick);
282 
										ircfw_socket_send_cmd(ia_sock, NULL, construct);
283 
										break;
284 
									}
7 nishi 285 
								} else if(strcasecmp(prm, "shutdown") == 0) {
286 
									if(strcmp(admin, nick) == 0) {
287 
										loop = false;
288 
									} else {
289 
										sprintf(construct, "PRIVMSG %s :You must be an admin to use this", nick);
290 
										ircfw_socket_send_cmd(ia_sock, NULL, construct);
291 
									}
292 
									break;
293 
								} else {
294 
									sprintf(construct, "PRIVMSG %s :Unknown command `%s'. See HELP.", nick, prm);
295 
									ircfw_socket_send_cmd(ia_sock, NULL, construct);
296 
									break;
297 
								}
298 
 
299 
								incr = i + 1;
11 nishi 300 
								t++;
7 nishi 301 
								if(oldc == 0) break;
302 
							}
303 
						}
304 
						free(prm);
6 nishi 305 
					}
306 
 
5 nishi 307 
					free(nick);
308 
				}
309 
			}
310 
		}
4 nishi 311 
	}
5 nishi 312 
 
313 
	ircfw_socket_send_cmd(ia_sock, NULL, "QUIT :Shutdown");
314 
 
315 
	free(construct);
4 nishi 316 
}