Commit | Line | Data |
---|---|---|
ea91242c KL |
1 | /** |
2 | * Jexer - Java Text User Interface | |
3 | * | |
4 | * License: LGPLv3 or later | |
5 | * | |
6 | * This module is licensed under the GNU Lesser General Public License | |
7 | * Version 3. Please see the file "COPYING" in this directory for more | |
8 | * information about the GNU Lesser General Public License Version 3. | |
9 | * | |
10 | * Copyright (C) 2015 Kevin Lamonte | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or | |
13 | * modify it under the terms of the GNU Lesser General Public License | |
14 | * as published by the Free Software Foundation; either version 3 of | |
15 | * the License, or (at your option) any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, but | |
18 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
20 | * General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU Lesser General Public | |
23 | * License along with this program; if not, see | |
24 | * http://www.gnu.org/licenses/, or write to the Free Software | |
25 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
26 | * 02110-1301 USA | |
27 | * | |
28 | * @author Kevin Lamonte [kevin.lamonte@gmail.com] | |
29 | * @version 1 | |
30 | */ | |
31 | package jexer.net; | |
32 | ||
33 | import java.io.InputStream; | |
34 | import java.io.IOException; | |
35 | import java.util.Map; | |
36 | import java.util.TreeMap; | |
37 | ||
38 | import jexer.session.SessionInfo; | |
39 | import static jexer.net.TelnetSocket.*; | |
40 | ||
41 | /** | |
42 | * TelnetInputStream works with TelnetSocket to perform the telnet protocol. | |
43 | */ | |
44 | public final class TelnetInputStream extends InputStream implements SessionInfo { | |
45 | ||
46 | /** | |
47 | * The root TelnetSocket that has my telnet protocol state. | |
48 | */ | |
49 | private TelnetSocket master; | |
50 | ||
51 | /** | |
52 | * The raw socket's InputStream. | |
53 | */ | |
54 | private InputStream input; | |
55 | ||
56 | /** | |
57 | * Package private constructor. | |
58 | * | |
59 | * @param master the master TelnetSocket | |
60 | * @param input the underlying socket's InputStream | |
61 | */ | |
62 | TelnetInputStream(TelnetSocket master, InputStream input) { | |
63 | this.master = master; | |
64 | this.input = input; | |
65 | } | |
66 | ||
67 | // SessionInfo interface -------------------------------------------------- | |
68 | ||
69 | /** | |
70 | * User name. | |
71 | */ | |
72 | private String username = ""; | |
73 | ||
74 | /** | |
75 | * Language. | |
76 | */ | |
77 | private String language = "en_US"; | |
78 | ||
79 | /** | |
80 | * Text window width. | |
81 | */ | |
82 | private int windowWidth = 80; | |
83 | ||
84 | /** | |
85 | * Text window height. | |
86 | */ | |
87 | private int windowHeight = 24; | |
88 | ||
89 | /** | |
90 | * Username getter. | |
91 | * | |
92 | * @return the username | |
93 | */ | |
94 | public String getUsername() { | |
95 | return this.username; | |
96 | } | |
97 | ||
98 | /** | |
99 | * Username setter. | |
100 | * | |
101 | * @param username the value | |
102 | */ | |
103 | public void setUsername(final String username) { | |
104 | this.username = username; | |
105 | } | |
106 | ||
107 | /** | |
108 | * Language getter. | |
109 | * | |
110 | * @return the language | |
111 | */ | |
112 | public String getLanguage() { | |
113 | return this.language; | |
114 | } | |
115 | ||
116 | /** | |
117 | * Language setter. | |
118 | * | |
119 | * @param language the value | |
120 | */ | |
121 | public void setLanguage(final String language) { | |
122 | this.language = language; | |
123 | } | |
124 | ||
125 | /** | |
126 | * Text window width getter. | |
127 | * | |
128 | * @return the window width | |
129 | */ | |
130 | public int getWindowWidth() { | |
131 | return windowWidth; | |
132 | } | |
133 | ||
134 | /** | |
135 | * Text window height getter. | |
136 | * | |
137 | * @return the window height | |
138 | */ | |
139 | public int getWindowHeight() { | |
140 | return windowHeight; | |
141 | } | |
142 | ||
143 | /** | |
144 | * Re-query the text window size. | |
145 | */ | |
146 | public void queryWindowSize() { | |
147 | // NOP | |
148 | } | |
149 | ||
150 | // InputStream interface -------------------------------------------------- | |
151 | ||
152 | /** | |
153 | * Returns an estimate of the number of bytes that can be read (or | |
154 | * skipped over) from this input stream without blocking by the next | |
155 | * invocation of a method for this input stream. | |
156 | * | |
157 | */ | |
158 | @Override | |
159 | public int available() throws IOException { | |
160 | // TODO | |
161 | return 0; | |
162 | } | |
163 | ||
164 | /** | |
165 | * Closes this input stream and releases any system resources associated | |
166 | * with the stream. | |
167 | */ | |
168 | @Override | |
169 | public void close() throws IOException { | |
170 | // TODO | |
171 | } | |
172 | ||
173 | /** | |
174 | * Marks the current position in this input stream. | |
175 | */ | |
176 | @Override | |
177 | public void mark(int readlimit) { | |
178 | // TODO | |
179 | } | |
180 | ||
181 | /** | |
182 | * Tests if this input stream supports the mark and reset methods. | |
183 | */ | |
184 | @Override | |
185 | public boolean markSupported() { | |
186 | return false; | |
187 | } | |
188 | ||
189 | /** | |
190 | * Reads the next byte of data from the input stream. | |
191 | */ | |
192 | @Override | |
193 | public int read() throws IOException { | |
194 | // TODO | |
195 | return -1; | |
196 | } | |
197 | ||
198 | /** | |
199 | * Reads some number of bytes from the input stream and stores them into | |
200 | * the buffer array b. | |
201 | */ | |
202 | @Override | |
203 | public int read(byte[] b) throws IOException { | |
204 | // TODO | |
205 | return -1; | |
206 | } | |
207 | ||
208 | /** | |
209 | * Reads up to len bytes of data from the input stream into an array of | |
210 | * bytes. | |
211 | */ | |
212 | @Override | |
213 | public int read(byte[] b, int off, int len) throws IOException { | |
214 | // TODO | |
215 | return -1; | |
216 | } | |
217 | ||
218 | /** | |
219 | * Repositions this stream to the position at the time the mark method | |
220 | * was last called on this input stream. | |
221 | */ | |
222 | @Override | |
223 | public void reset() throws IOException { | |
224 | // TODO | |
225 | } | |
226 | ||
227 | /** | |
228 | * Skips over and discards n bytes of data from this input stream. | |
229 | */ | |
230 | @Override | |
231 | public long skip(long n) throws IOException { | |
232 | // TODO | |
233 | return -1; | |
234 | } | |
235 | ||
236 | ||
237 | // Telnet protocol -------------------------------------------------------- | |
238 | ||
239 | /** | |
240 | * The subnegotiation buffer. | |
241 | */ | |
242 | private byte [] subnegBuffer; | |
243 | ||
244 | /** | |
245 | * For debugging, return a descriptive string for this telnet option. | |
246 | * These are pulled from: http://www.iana.org/assignments/telnet-options | |
247 | * | |
248 | * @return a string describing the telnet option code | |
249 | */ | |
250 | private String optionString(final int option) { | |
251 | switch (option) { | |
252 | case 0: return "Binary Transmission"; | |
253 | case 1: return "Echo"; | |
254 | case 2: return "Reconnection"; | |
255 | case 3: return "Suppress Go Ahead"; | |
256 | case 4: return "Approx Message Size Negotiation"; | |
257 | case 5: return "Status"; | |
258 | case 6: return "Timing Mark"; | |
259 | case 7: return "Remote Controlled Trans and Echo"; | |
260 | case 8: return "Output Line Width"; | |
261 | case 9: return "Output Page Size"; | |
262 | case 10: return "Output Carriage-Return Disposition"; | |
263 | case 11: return "Output Horizontal Tab Stops"; | |
264 | case 12: return "Output Horizontal Tab Disposition"; | |
265 | case 13: return "Output Formfeed Disposition"; | |
266 | case 14: return "Output Vertical Tabstops"; | |
267 | case 15: return "Output Vertical Tab Disposition"; | |
268 | case 16: return "Output Linefeed Disposition"; | |
269 | case 17: return "Extended ASCII"; | |
270 | case 18: return "Logout"; | |
271 | case 19: return "Byte Macro"; | |
272 | case 20: return "Data Entry Terminal"; | |
273 | case 21: return "SUPDUP"; | |
274 | case 22: return "SUPDUP Output"; | |
275 | case 23: return "Send Location"; | |
276 | case 24: return "Terminal Type"; | |
277 | case 25: return "End of Record"; | |
278 | case 26: return "TACACS User Identification"; | |
279 | case 27: return "Output Marking"; | |
280 | case 28: return "Terminal Location Number"; | |
281 | case 29: return "Telnet 3270 Regime"; | |
282 | case 30: return "X.3 PAD"; | |
283 | case 31: return "Negotiate About Window Size"; | |
284 | case 32: return "Terminal Speed"; | |
285 | case 33: return "Remote Flow Control"; | |
286 | case 34: return "Linemode"; | |
287 | case 35: return "X Display Location"; | |
288 | case 36: return "Environment Option"; | |
289 | case 37: return "Authentication Option"; | |
290 | case 38: return "Encryption Option"; | |
291 | case 39: return "New Environment Option"; | |
292 | case 40: return "TN3270E"; | |
293 | case 41: return "XAUTH"; | |
294 | case 42: return "CHARSET"; | |
295 | case 43: return "Telnet Remote Serial Port (RSP)"; | |
296 | case 44: return "Com Port Control Option"; | |
297 | case 45: return "Telnet Suppress Local Echo"; | |
298 | case 46: return "Telnet Start TLS"; | |
299 | case 47: return "KERMIT"; | |
300 | case 48: return "SEND-URL"; | |
301 | case 49: return "FORWARD_X"; | |
302 | case 138: return "TELOPT PRAGMA LOGON"; | |
303 | case 139: return "TELOPT SSPI LOGON"; | |
304 | case 140: return "TELOPT PRAGMA HEARTBEAT"; | |
305 | case 255: return "Extended-Options-List"; | |
306 | default: | |
307 | if ((option >= 50) && (option <= 137)) { | |
308 | return "Unassigned"; | |
309 | } | |
310 | return "UNKNOWN - OTHER"; | |
311 | } | |
312 | } | |
313 | ||
314 | /** | |
315 | * Send a DO/DON'T/WILL/WON'T response to the remote side. | |
316 | * | |
317 | * @param response a TELNET_DO/DONT/WILL/WONT byte | |
318 | * @param option telnet option byte (binary mode, term type, etc.) | |
319 | */ | |
320 | private void respond(final int response, | |
321 | final int option) throws IOException { | |
322 | ||
323 | byte [] buffer = new byte[3]; | |
324 | buffer[0] = (byte)TELNET_IAC; | |
325 | buffer[1] = (byte)response; | |
326 | buffer[2] = (byte)option; | |
327 | ||
328 | master.output.write(buffer); | |
329 | } | |
330 | ||
331 | /** | |
332 | * Tell the remote side we WILL support an option. | |
333 | * | |
334 | * @param option telnet option byte (binary mode, term type, etc.) | |
335 | */ | |
336 | private void WILL(final int option) throws IOException { | |
337 | respond(TELNET_WILL, option); | |
338 | } | |
339 | ||
340 | /** | |
341 | * Tell the remote side we WON'T support an option. | |
342 | * | |
343 | * @param option telnet option byte (binary mode, term type, etc.) | |
344 | */ | |
345 | private void WONT(final int option) throws IOException { | |
346 | respond(TELNET_WONT, option); | |
347 | } | |
348 | ||
349 | /** | |
350 | * Tell the remote side we DO support an option. | |
351 | * | |
352 | * @param option telnet option byte (binary mode, term type, etc.) | |
353 | */ | |
354 | private void DO(final int option) throws IOException { | |
355 | respond(TELNET_DO, option); | |
356 | } | |
357 | ||
358 | /** | |
359 | * Tell the remote side we DON'T support an option. | |
360 | * | |
361 | * @param option telnet option byte (binary mode, term type, etc.) | |
362 | */ | |
363 | private void DONT(final int option) throws IOException { | |
364 | respond(TELNET_DONT, option); | |
365 | } | |
366 | ||
367 | /** | |
368 | * Tell the remote side we WON't or DON'T support an option. | |
369 | * | |
370 | * @param remoteQuery a TELNET_DO/DONT/WILL/WONT byte | |
371 | * @param option telnet option byte (binary mode, term type, etc.) | |
372 | */ | |
373 | private void refuse(final int remoteQuery, | |
374 | final int option) throws IOException { | |
375 | ||
376 | if (remoteQuery == TELNET_DO) { | |
377 | WONT(option); | |
378 | } else { | |
379 | DONT(option); | |
380 | } | |
381 | } | |
382 | ||
383 | /** | |
384 | * Build sub-negotiation packet (RFC 855) | |
385 | * | |
386 | * @param option telnet option | |
387 | * @param response output buffer of response bytes | |
388 | */ | |
389 | private void telnetSendSubnegResponse(final int option, | |
390 | final byte [] response) throws IOException { | |
391 | ||
392 | byte [] buffer = new byte[response.length + 5]; | |
393 | buffer[0] = (byte)TELNET_IAC; | |
394 | buffer[1] = (byte)TELNET_SB; | |
395 | buffer[2] = (byte)option; | |
396 | System.arraycopy(response, 0, buffer, 3, response.length); | |
397 | buffer[response.length + 3] = (byte)TELNET_IAC; | |
398 | buffer[response.length + 4] = (byte)TELNET_SE; | |
399 | master.output.write(buffer); | |
400 | } | |
401 | ||
402 | /** | |
403 | * Telnet option: Terminal Speed (RFC 1079). Client side. | |
404 | */ | |
405 | private void telnetSendTerminalSpeed() throws IOException { | |
406 | byte [] response = {0, '3', '8', '4', '0', '0', ',', | |
407 | '3', '8', '4', '0', '0'}; | |
408 | telnetSendSubnegResponse(32, response); | |
409 | } | |
410 | ||
411 | /** | |
412 | * Telnet option: Terminal Type (RFC 1091). Client side. | |
413 | */ | |
414 | private void telnetSendTerminalType() throws IOException { | |
415 | byte [] response = {0, 'v', 't', '1', '0', '0' }; | |
416 | telnetSendSubnegResponse(24, response); | |
417 | } | |
418 | ||
419 | /** | |
420 | * Telnet option: Terminal Type (RFC 1091). Server side. | |
421 | */ | |
422 | private void requestTerminalType() throws IOException { | |
423 | byte [] response = new byte[1]; | |
424 | response[0] = 1; | |
425 | telnetSendSubnegResponse(24, response); | |
426 | } | |
427 | ||
428 | /** | |
429 | * Telnet option: Terminal Speed (RFC 1079). Server side. | |
430 | */ | |
431 | private void requestTerminalSpeed() throws IOException { | |
432 | byte [] response = new byte[1]; | |
433 | response[0] = 1; | |
434 | telnetSendSubnegResponse(32, response); | |
435 | } | |
436 | ||
437 | /** | |
438 | * Telnet option: New Environment (RFC 1572). Server side. | |
439 | */ | |
440 | private void requestEnvironment() throws IOException { | |
441 | byte [] response = new byte[1]; | |
442 | response[0] = 1; | |
443 | telnetSendSubnegResponse(39, response); | |
444 | } | |
445 | ||
446 | /** | |
447 | * Send the options we want to negotiate on: | |
448 | * Binary Transmission RFC 856 | |
449 | * Suppress Go Ahead RFC 858 | |
450 | * Negotiate About Window Size RFC 1073 | |
451 | * Terminal Type RFC 1091 | |
452 | * Terminal Speed RFC 1079 | |
453 | * New Environment RFC 1572 | |
454 | * | |
455 | * When run as a server: | |
456 | * Echo | |
457 | */ | |
458 | private void telnetSendOptions() throws IOException { | |
459 | if (master.nvt.binaryMode == false) { | |
460 | // Binary Transmission: must ask both do and will | |
461 | DO(0); | |
462 | WILL(0); | |
463 | } | |
464 | ||
465 | if (master.nvt.goAhead == true) { | |
466 | // Suppress Go Ahead | |
467 | DO(3); | |
468 | WILL(3); | |
469 | } | |
470 | ||
471 | // Server only options | |
472 | if (master.nvt.isServer == true) { | |
473 | // Enable Echo - I echo to them, they do not echo back to me. | |
474 | DONT(1); | |
475 | WILL(1); | |
476 | ||
477 | if (master.nvt.doTermType == true) { | |
478 | // Terminal type - request it | |
479 | DO(24); | |
480 | } | |
481 | ||
482 | if (master.nvt.doTermSpeed == true) { | |
483 | // Terminal speed - request it | |
484 | DO(32); | |
485 | } | |
486 | ||
487 | if (master.nvt.doNAWS == true) { | |
488 | // NAWS - request it | |
489 | DO(31); | |
490 | } | |
491 | ||
492 | if (master.nvt.doEnvironment == true) { | |
493 | // Environment - request it | |
494 | DO(39); | |
495 | } | |
496 | ||
497 | } else { | |
498 | ||
499 | if (master.nvt.doTermType == true) { | |
500 | // Terminal type - request it | |
501 | WILL(24); | |
502 | } | |
503 | ||
504 | if (master.nvt.doTermSpeed == true) { | |
505 | // Terminal speed - request it | |
506 | WILL(32); | |
507 | } | |
508 | ||
509 | if (master.nvt.doNAWS == true) { | |
510 | // NAWS - request it | |
511 | WILL(31); | |
512 | } | |
513 | ||
514 | if (master.nvt.doEnvironment == true) { | |
515 | // Environment - request it | |
516 | WILL(39); | |
517 | } | |
518 | ||
519 | } | |
520 | } | |
521 | ||
522 | /** | |
523 | * New Environment parsing state. | |
524 | */ | |
525 | private enum EnvState { | |
526 | INIT, | |
527 | TYPE, | |
528 | NAME, | |
529 | VALUE | |
530 | } | |
531 | ||
532 | /** | |
533 | * Handle the New Environment option. Note that this implementation | |
534 | * fails to handle ESC as defined in RFC 1572. | |
535 | */ | |
536 | private void handleNewEnvironment() { | |
537 | Map<StringBuilder, StringBuilder> newEnv = new TreeMap<StringBuilder, StringBuilder>(); | |
538 | EnvState state = EnvState.INIT; | |
539 | StringBuilder name = new StringBuilder(); | |
540 | StringBuilder value = new StringBuilder(); | |
541 | ||
542 | for (int i = 0; i < subnegBuffer.length; i++) { | |
543 | byte b = subnegBuffer[i]; | |
544 | ||
545 | switch (state) { | |
546 | ||
547 | case INIT: | |
548 | // Looking for "IS" | |
549 | if (b == 0) { | |
550 | state = EnvState.TYPE; | |
551 | } else { | |
552 | // The other side isn't following the rules, see ya. | |
553 | return; | |
554 | } | |
555 | break; | |
556 | ||
557 | case TYPE: | |
558 | // Looking for "VAR" or "USERVAR" | |
559 | if (b == 0) { | |
560 | // VAR | |
561 | state = EnvState.NAME; | |
562 | name = new StringBuilder(); | |
563 | } else if (b == 3) { | |
564 | // USERVAR | |
565 | state = EnvState.NAME; | |
566 | name = new StringBuilder(); | |
567 | } else { | |
568 | // The other side isn't following the rules, see ya | |
569 | return; | |
570 | } | |
571 | break; | |
572 | ||
573 | case NAME: | |
574 | // Looking for "VALUE" or a name byte | |
575 | if (b == 1) { | |
576 | // VALUE | |
577 | state = EnvState.VALUE; | |
578 | value = new StringBuilder(); | |
579 | } else { | |
580 | // Take it as an environment variable name/key byte | |
581 | name.append((char)b); | |
582 | } | |
583 | ||
584 | break; | |
585 | ||
586 | case VALUE: | |
587 | // Looking for "VAR", "USERVAR", or a name byte, or the end | |
588 | if (b == 0) { | |
589 | // VAR | |
590 | state = EnvState.NAME; | |
591 | if (value.length() > 0) { | |
592 | newEnv.put(name, value); | |
593 | } | |
594 | name = new StringBuilder(); | |
595 | } else if (b == 3) { | |
596 | // USERVAR | |
597 | state = EnvState.NAME; | |
598 | if (value.length() > 0) { | |
599 | newEnv.put(name, value); | |
600 | } | |
601 | name = new StringBuilder(); | |
602 | } else { | |
603 | // Take it as an environment variable value byte | |
604 | value.append((char)b); | |
605 | } | |
606 | break; | |
607 | } | |
608 | } | |
609 | ||
610 | if ((name.length() > 0) && (value.length() > 0)) { | |
611 | newEnv.put(name, value); | |
612 | } | |
613 | ||
614 | for (StringBuilder key: newEnv.keySet()) { | |
615 | if (key.equals("LANG")) { | |
616 | language = newEnv.get(key).toString(); | |
617 | } | |
618 | if (key.equals("LOGNAME")) { | |
619 | username = newEnv.get(key).toString(); | |
620 | } | |
621 | if (key.equals("USER")) { | |
622 | username = newEnv.get(key).toString(); | |
623 | } | |
624 | } | |
625 | } | |
626 | ||
627 | /** | |
628 | * Handle an option sub-negotiation. | |
629 | */ | |
630 | private void handleSubneg() throws IOException { | |
631 | byte option; | |
632 | ||
633 | // Sanity check: there must be at least 1 byte in subnegBuffer | |
634 | if (subnegBuffer.length < 1) { | |
635 | // Buffer too small: the other side is a broken telnetd, it did | |
636 | // not send the right sub-negotiation data. Bail out now. | |
637 | return; | |
638 | } | |
639 | option = subnegBuffer[0]; | |
640 | ||
641 | switch (option) { | |
642 | ||
643 | case 24: | |
644 | // Terminal Type | |
645 | if ((subnegBuffer.length > 1) && (subnegBuffer[1] == 1)) { | |
646 | // Server sent "SEND", we say "IS" | |
647 | telnetSendTerminalType(); | |
648 | } | |
649 | if ((subnegBuffer.length > 1) && (subnegBuffer[1] == 0)) { | |
650 | // Client sent "IS", record it | |
651 | StringBuilder terminalString = new StringBuilder(); | |
652 | for (int i = 2; i < subnegBuffer.length; i++) { | |
653 | terminalString.append((char)subnegBuffer[i]); | |
654 | } | |
655 | master.nvt.terminal = terminalString.toString(); | |
656 | } | |
657 | break; | |
658 | ||
659 | case 32: | |
660 | // Terminal Speed | |
661 | if ((subnegBuffer.length > 1) && (subnegBuffer[1] == 1)) { | |
662 | // Server sent "SEND", we say "IS" | |
663 | telnetSendTerminalSpeed(); | |
664 | } | |
665 | if ((subnegBuffer.length > 1) && (subnegBuffer[1] == 0)) { | |
666 | // Client sent "IS", record it | |
667 | StringBuilder speedString = new StringBuilder(); | |
668 | for (int i = 2; i < subnegBuffer.length; i++) { | |
669 | speedString.append((char)subnegBuffer[i]); | |
670 | } | |
671 | String termSpeed = speedString.toString(); | |
672 | } | |
673 | break; | |
674 | ||
675 | case 31: | |
676 | // NAWS | |
677 | if (subnegBuffer.length >= 5) { | |
678 | int i = 0; | |
679 | ||
680 | i++; | |
681 | if (subnegBuffer[i] == TELNET_IAC) { | |
682 | i++; | |
683 | } | |
684 | windowWidth = subnegBuffer[i] * 256; | |
685 | ||
686 | i++; | |
687 | if (subnegBuffer[i] == TELNET_IAC) { | |
688 | i++; | |
689 | } | |
690 | windowWidth += subnegBuffer[i]; | |
691 | ||
692 | i++; | |
693 | if (subnegBuffer[i] == TELNET_IAC) { | |
694 | i++; | |
695 | } | |
696 | windowHeight = subnegBuffer[i] * 256; | |
697 | ||
698 | i++; | |
699 | if (subnegBuffer[i] == TELNET_IAC) { | |
700 | i++; | |
701 | } | |
702 | windowHeight += subnegBuffer[i]; | |
703 | } | |
704 | break; | |
705 | ||
706 | case 39: | |
707 | // Environment | |
708 | handleNewEnvironment(); | |
709 | break; | |
710 | ||
711 | default: | |
712 | // Ignore this one | |
713 | break; | |
714 | } | |
715 | } | |
716 | ||
717 | ||
718 | } |