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<Gregor> tar xf egobot.tar.xz
author HackBot
date Sun, 09 Dec 2012 19:30:08 +0000
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995:6883f5911eb7 996:859f9b4339e6
1 /*
2 * Copyright (c) 2005 Gregor Richards
3 *
4 * This file is part of Glass.
5 *
6 * Glass is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * Glass is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with Glass; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include <iostream>
22 using namespace std;
23
24 #include <signal.h>
25 #include <stdio.h>
26 #include <stdlib.h>
27 #include <string.h>
28 #include <sys/stat.h>
29 #include <sys/types.h>
30 #include <sys/wait.h>
31 #include <unistd.h>
32
33 #include "builtins.h"
34 #include "func.h"
35 #include "glass.h"
36 #include "klass.h"
37 #include "klassi.h"
38 #include "parseq.h"
39 #include "variable.h"
40
41 map<string,Variable *> globalVars;
42
43 vector<KlassI *> globalInstant;
44
45 deque<Variable *> mainStack;
46
47 #ifdef IRC
48 string IRC_o, chan;
49 unsigned int progTimer;
50 #define MAXTIME 10000000
51 void keepalivePing(int ignore);
52 #define PINGRATE (60*5)
53 #endif
54
55 bool parseI(char *inp, int &i, ParseQ *pq);
56 void stringParse(string &toparse);
57 void cacheIt(const char *cachef);
58 void runIt();
59 void clearM();
60
61 int main(int argc, char **argv, char **envp)
62 {
63 char *input, *bins;
64 FILE *fin;
65 int fini;
66 struct stat sbuf;
67 int i = 0, j;
68 ParseQ *master;
69 string eval;
70 map<string,Variable *>::iterator svari;
71
72 // first read in builtins
73 bins = strdup(builtinDefinitions);
74 if (bins) {
75 master = new ParseQ();
76 i = 0;
77 while (parseI(bins, i, master));
78 master->parseKlasses();
79 delete master;
80 free(bins);
81 }
82
83 #ifndef IRC
84 if (argc < 2) {
85 fprintf(stderr, "Use: glass [cache] <input>\n");
86 return 1;
87 }
88
89 // non-IRC gets environment variables
90 for (i = 0; envp[i]; i++) {
91 for (j = 0; envp[i][j] && envp[i][j] != '='; j++);
92 if (!envp[i][j]) continue;
93 eval = envp[i];
94 globalVars["Env" + eval.substr(0, j)] = new Variable(VAR_STRING, eval.substr(j + 1));
95 }
96
97 #else
98 if (argc < 5) {
99 cout << "Use: glass <cachefile> <username> <master> <channel>" << endl;
100 return 1;
101 }
102 #endif
103
104 for (j = 1; argv[j]; j++) {
105 // open the file ...
106 fin = fopen(argv[j], "r");
107 if (!fin) continue;
108
109 // get the size ...
110 fini = fileno(fin);
111 if (fstat(fini, &sbuf) == -1) continue;
112
113 // allocate
114 input = (char *) malloc(sbuf.st_size + 2);
115 input[sbuf.st_size] = '\0';
116
117 // read
118 if (fread(input, 1, sbuf.st_size, fin) < 0) continue;
119
120 // parse
121 master = new ParseQ();
122 i = 0;
123 while (parseI(input, i, master));
124 master->parseKlasses();
125 delete master;
126
127 // free
128 free(input);
129
130 // if this is our cache file, ignore the M
131 if (j == 1 && argv[2]) {
132 clearM();
133 }
134 }
135
136 #ifndef IRC
137 // cache if necessary
138 if (argv[2]) cacheIt(argv[1]);
139
140 // if we're not in IRC mode, this is the file to run
141 runIt();
142 #else
143 // IRC
144
145 char line[32257];
146 string sline;
147 line[32256] = '\0';
148 int mode = 0;
149 chan = argv[4];
150
151 // schedule keepalive pings
152 signal(14, keepalivePing);
153 alarm(PINGRATE);
154
155 // fix our cache (which will probably have a faulty M in it)
156 clearM();
157
158 while (true) {
159 line[0] = '\0';
160 while (!fgets(line, 1024, stdin)) {
161 // we can't use sleep() directly due to alarm()
162 int pid = fork();
163 if (pid == 0) {
164 sleep(1);
165 exit(0);
166 } else if (pid > 0) {
167 wait(NULL);
168 }
169 }
170 sline = line;
171 cout << sline << endl;
172
173 if (sline.substr(0, 5) == "PING ") {
174 cerr << "PONG :localhost\r\n";
175 continue;
176 }
177
178 switch (mode) {
179 case 0:
180 // tell it our nick
181 cerr << "USER " << argv[2] << " localhost localhost :GlassBot\r\n";
182 cerr << "NICK " << argv[2] << "\r\n";
183 mode++;
184 break;
185
186 case 1:
187 // join the channel
188 cerr << "JOIN #" << chan << "\r\n";
189 mode++;
190 break;
191
192 case 2:
193 // the real heavy lifting
194 if (sline[0] == ':') {
195 unsigned int ui;
196 unsigned int gloc = 0;
197 string sender, retsend;
198
199 // parse for the !
200 for (ui = 0; ui < sline.length() && sline[ui] != '!' && sline[ui] != ' '; ui++);
201 if (ui == sline.length()) continue;
202 // get the sender
203 sender = sline.substr(1, ui - 1);
204
205 // parse for the space
206 for (; ui < sline.length() && sline[ui] != ' '; ui++);
207 if (ui == sline.length()) continue;
208 sline = sline.substr(ui + 1);
209
210 // it should be "PRIVMSG <something> :G!..."
211 if (sline.substr(0, 8) == "PRIVMSG " &&
212 (gloc = sline.find(":G!", 0)) != string::npos) {
213 // where should we return it to?
214 retsend = sline.substr(8, gloc - 9);
215 if (retsend[0] != '#') {
216 // send it to the sender
217 retsend = sender;
218 }
219
220 // we only need what's after G!
221 sline = sline.substr(gloc + 3);
222 strcpy(line, sline.c_str());
223
224 // maybe it's a URL
225 if (sline[0] == 'U') {
226 sline = sline.substr(1);
227 strcpy(line, sline.c_str());
228
229 // make sure the URL is good
230 for (ui = 0; line[ui]; ui++) {
231 switch (line[ui]) {
232 case '\r':
233 case '\n':
234 case '?':
235 line[ui] = '\0';
236 break;
237 }
238 }
239 if (strncmp(line, "http://", 7)) {
240 line[0] = '\0';
241 }
242
243 // fork off a pid to do lynx --dump
244 int urli[2], pid;
245 pipe(urli);
246 pid = fork();
247 if (pid == 0) {
248 dup2(urli[1], 1);
249 dup2(urli[1], 2);
250 execlp("lynx", "lynx", "--dump", line,
251 "-connect_timeout", "15", NULL);
252 exit(0);
253 } else if (pid >= 0) {
254 read(urli[0], line, 32256);
255 wait(NULL);
256 }
257 close(urli[0]);
258 close(urli[1]);
259 }
260
261 // we now have our input, parse!
262 master = new ParseQ();
263 i = 0;
264 while (parseI(line, i, master));
265 master->parseKlasses();
266 delete master;
267
268 // reset any destroyed builtins
269 bins = strdup(builtinDefinitions);
270 if (bins) {
271 master = new ParseQ();
272 i = 0;
273 while (parseI(bins, i, master));
274 master->parseKlasses();
275 delete master;
276 free(bins);
277 }
278
279 cacheIt(argv[1]);
280 runIt();
281
282 // display the output
283 if (IRC_o != "") {
284 // get rid of possible injections
285 for (ui = 0; ui < IRC_o.length(); ui++) {
286 switch (IRC_o[ui]) {
287 case '\n':
288 case '\r':
289 IRC_o[ui] = ' ';
290 break;
291 }
292 }
293 alarm(0);
294 // allow our master to do raw sending
295 if (sender == argv[3] && IRC_o[0] == '^') {
296 cerr << IRC_o.substr(1) << "\r\n";
297 } else {
298 // max of 400 chars (about)
299 if (IRC_o.length() > 400) {
300 IRC_o = IRC_o.substr(0, 393) + " Flood!";
301 }
302 cerr << "PRIVMSG " << retsend << " :" << IRC_o << "\r\n";
303 }
304 alarm(PINGRATE);
305 }
306
307 // then garbage collection
308 for (ui = 0; ui < globalInstant.size(); ui++) {
309 delete globalInstant[ui];
310 }
311 globalInstant.clear();
312 for (ui = 0; ui < mainStack.size(); ui++) {
313 delete mainStack[ui];
314 }
315 mainStack.clear();
316 clearM();
317 /* we have to keep a vector of strings to properly erase globalVars,
318 * otherwise we'll end up messing up the iterator mid-loop */
319 vector<string> todel;
320 for (svari = globalVars.begin(); svari != globalVars.end(); svari++) {
321 if (svari->second->type != VAR_KLASS) {
322 // any user global variables are deleted
323 delete svari->second;
324 todel.push_back(svari->first);
325 }
326 }
327 for (ui = 0; ui < todel.size(); ui++) {
328 globalVars.erase(todel[ui]);
329 }
330 todel.clear();
331 }
332 }
333 break;
334 }
335 }
336 #endif
337
338 return 0;
339 }
340
341 bool parseI(char *inp, int &i, ParseQ *pq)
342 {
343 int j;
344
345 // this function stops iterating at inp[i] == '\0'
346 if (!inp[i]) return false;
347
348 if (inp[i] >= 'A' && inp[i] <= 'Z') {
349 pq->add(new ParseQElement(PQT_GLOBAL, inp[i]));
350 } else if (inp[i] >= 'a' && inp[i] <= 'z') {
351 pq->add(new ParseQElement(PQT_CLASSWIDE, inp[i]));
352 } else if (inp[i] >= '0' && inp[i] <= '9') {
353 pq->add(new ParseQElement(PQT_STACK, inp[i]));
354 } else if (inp[i] == '(') {
355 i++;
356 for (j = i; inp[j] && inp[j] != ')'; j++);
357 if (!inp[j]) {
358 // ERROR
359 return false;
360 }
361
362 // now we're at the )
363 inp[j] = '\0';
364 // now some sub-parsing
365 if (inp[i] >= 'A' && inp[i] <= 'Z') {
366 pq->add(new ParseQElement(PQT_GLOBAL, inp + i));
367 } else if (inp[i] >= 'a' && inp[i] <= 'z') {
368 pq->add(new ParseQElement(PQT_CLASSWIDE, inp + i));
369 } else if (inp[i] >= '0' && inp[i] <= '9') {
370 pq->add(new ParseQElement(PQT_STACK, inp + i));
371 } else if (inp[i] == '_') {
372 pq->add(new ParseQElement(PQT_LOCAL, inp + i));
373 }
374 i = j;
375 } else if (inp[i] == '"') {
376 // push a string
377 i++;
378 for (j = i; inp[j] && inp[j] != '"'; j++);
379 if (!inp[j]) {
380 // ERROR
381 return false;
382 }
383
384 // now we're on the ending "
385 inp[j] = '\0';
386 string tomk = inp + i;
387
388 stringParse(tomk);
389
390 pq->add(new ParseQElement(PQT_STRING, tomk));
391 i = j;
392 } else if (inp[i] == '<') {
393 // push a number
394 i++;
395 for (j = i; inp[j] && inp[j] != '>'; j++);
396 if (!inp[j]) {
397 // ERROR
398 return false;
399 }
400
401 // now we're on the >
402 inp[j] = '\0';
403 pq->add(new ParseQElement(PQT_NUMBER, inp + i));
404 i = j;
405 } else if (inp[i] == '~') {
406 // special, builtin
407 i++;
408 for (j = i; inp[j] && inp[j] != '~'; j++);
409 if (!inp[j]) {
410 // ERROR
411 return false;
412 }
413
414 // now we're on the ending "
415 inp[j] = '\0';
416 pq->add(new ParseQElement(PQT_BUILTIN, inp + i));
417 i = j;
418 } else if (inp[i] == '\'') {
419 // comment
420 i++;
421 for (; inp[i] && inp[i] != '\''; i++);
422 if (!inp[i]) {
423 // ERROR
424 return false;
425 }
426 } else if (inp[i] != ' ' && inp[i] != '\t' &&
427 inp[i] != '\n' && inp[i] != '\r') {
428 // the rest are all commands (or ignorable non-commands)
429 pq->add(new ParseQElement(PQT_COMMAND, inp[i]));
430 }
431 i++;
432 return true;
433 }
434
435 void stringParse(string &toparse)
436 {
437 unsigned int i;
438
439 for (i = 0; i < toparse.length(); i++) {
440 if (toparse[i] == '\\') {
441 switch (toparse[i+1]) {
442 case 'n':
443 toparse.replace(i, 2, string("\n"));
444 break;
445
446 default:
447 toparse.replace(i, 2, toparse.substr(i + 1, 1));
448 }
449 }
450 }
451 }
452
453 Variable *getVar(KlassI *klass, map<string,Variable *> *locals, string name)
454 {
455 // what type of var?
456 char fchar = name[0];
457 if (fchar >= 'A' && fchar <= 'Z') {
458 // global
459 if (globalVars.find(name) == globalVars.end()) {
460 globalVars[name] = new Variable();
461 }
462 return globalVars[name];
463 } else if (fchar >= 'a' && fchar <= 'z') {
464 // classwide
465 if (klass->vars.find(name) == klass->vars.end()) {
466 klass->vars[name] = new Variable();
467 // check if it's a function that hasn't been allocated in the klassi due to lazy allocation
468 if (klass->of->functions.find(name) != klass->of->functions.end()) {
469 klass->vars[name]->type = VAR_FUNC;
470 klass->vars[name]->fval = klass->of->functions[name];
471 }
472 }
473 return klass->vars[name];
474 } else if (fchar == '_') {
475 // local
476 if (locals->find(name) == locals->end()) {
477 (*locals)[name] = new Variable();
478 }
479 return (*locals)[name];
480 } else {
481 // ERROR
482 exit(2);
483 }
484 }
485
486 #ifdef IRC
487 void keepalivePing(int ignore)
488 {
489 cerr << "PING :localhost\r\n";
490 alarm(PINGRATE);
491 }
492 #endif
493
494
495 void cacheIt(const char *cachef)
496 {
497 FILE *fin;
498 map<string,Variable *>::iterator svari;
499
500 // cache it
501 fin = fopen(cachef, "w");
502 if (fin) {
503 Klass *curklass;
504 map<string,Func *>::iterator fvari;
505 for (svari = globalVars.begin(); svari != globalVars.end(); svari++) {
506 // for each klass ...
507 if (svari->second->type == VAR_KLASS) {
508 // write the name ...
509 fputs("{(", fin);
510 fputs(svari->first.c_str(), fin);
511 fputs(")", fin);
512 curklass = svari->second->kval;
513 // for each function ...
514 for (fvari = curklass->functions.begin(); fvari !=
515 curklass->functions.end(); fvari++) {
516 string cont;
517 // write the name ...
518 fputs("[(", fin);
519 fputs(fvari->second->name.c_str(), fin);
520 fputs(")", fin);
521 // and the content
522 cont = fvari->second->contents->dump();
523 fputs(cont.c_str(), fin);
524 // and close it
525 fputs("]", fin);
526 }
527 // close it
528 fputs("}", fin);
529 }
530 }
531 fclose(fin);
532 }
533 }
534
535 void runIt()
536 {
537 // now run M.m
538 Variable *Mvar;
539 Klass *M;
540 KlassI *MI;
541 if (globalVars.find("M") == globalVars.end()) {
542 #ifndef IRC
543 cout << "OK" << endl;
544 return;
545 #else
546 IRC_o = "";
547 cerr << "PRIVMSG #" << chan << " :OK\r\n" << endl;
548 return;
549 #endif
550 }
551 Mvar = globalVars["M"];
552
553 if (Mvar->type != VAR_KLASS) {
554 #ifndef IRC
555 cout << "OK" << endl;
556 return;
557 #else
558 IRC_o = "";
559 cerr << "PRIVMSG #" << chan << " :OK\r\n" << endl;
560 return;
561 #endif
562 }
563
564 M = Mvar->kval;
565 MI = new KlassI();
566 globalVars["MI"] = new Variable(VAR_KLASSI, MI);
567 MI->of = M;
568
569 // now make sure M.m exists
570 if (M->functions.find("m") == M->functions.end()) {
571 cout << "NO M.m!" << endl;
572 return;
573 }
574
575 // and run it
576 #ifdef IRC
577 IRC_o = "";
578 progTimer = MAXTIME;
579 #endif
580 M->functions["m"]->contents->runFunc(MI, M->functions["m"]);
581 }
582
583 void clearM()
584 {
585 if (globalVars.find("MI") != globalVars.end()) {
586 if (globalVars["MI"]->type == VAR_KLASSI) {
587 delete globalVars["MI"]->kival;
588 delete globalVars["MI"];
589 globalVars.erase("MI");
590 }
591 }
592
593 if (globalVars.find("M") != globalVars.end()) {
594 if (globalVars["M"]->type == VAR_KLASS) {
595 delete globalVars["M"]->kval;
596 delete globalVars["M"];
597 globalVars.erase("M");
598 }
599 }
600 }