Commit | Line | Data |
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f644bb55 | 1 | /* |
882508af | 2 | * Copyright (c) 1985, 1988 Regents of the University of California. |
e2071415 KB |
3 | * All rights reserved. |
4 | * | |
5 | * Redistribution and use in source and binary forms are permitted | |
b8c620d6 KB |
6 | * provided that the above copyright notice and this paragraph are |
7 | * duplicated in all such forms and that any documentation, | |
8 | * advertising materials, and other materials related to such | |
9 | * distribution and use acknowledge that the software was developed | |
10 | * by the University of California, Berkeley. The name of the | |
11 | * University may not be used to endorse or promote products derived | |
12 | * from this software without specific prior written permission. | |
13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
fdb56acd | 15 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
b8c620d6 | 16 | * |
8ba00015 | 17 | * @(#)ftpcmd.y 5.20.1.1 (Berkeley) %G% |
f644bb55 DF |
18 | */ |
19 | ||
25d264e2 SL |
20 | /* |
21 | * Grammar for FTP commands. | |
fdb56acd | 22 | * See RFC 959. |
25d264e2 SL |
23 | */ |
24 | ||
25 | %{ | |
26 | ||
27 | #ifndef lint | |
8ba00015 | 28 | static char sccsid[] = "@(#)ftpcmd.y 5.20.1.1 (Berkeley) %G%"; |
e2071415 | 29 | #endif /* not lint */ |
25d264e2 | 30 | |
4d340163 | 31 | #include <sys/param.h> |
25d264e2 SL |
32 | #include <sys/socket.h> |
33 | ||
34 | #include <netinet/in.h> | |
35 | ||
23eeaca6 SL |
36 | #include <arpa/ftp.h> |
37 | ||
25d264e2 | 38 | #include <stdio.h> |
5ac6fc46 | 39 | #include <signal.h> |
25d264e2 SL |
40 | #include <ctype.h> |
41 | #include <pwd.h> | |
42 | #include <setjmp.h> | |
df2f99b4 | 43 | #include <syslog.h> |
fdb56acd MK |
44 | #include <sys/stat.h> |
45 | #include <time.h> | |
25d264e2 SL |
46 | |
47 | extern struct sockaddr_in data_dest; | |
48 | extern int logged_in; | |
49 | extern struct passwd *pw; | |
50 | extern int guest; | |
51 | extern int logging; | |
52 | extern int type; | |
53 | extern int form; | |
54 | extern int debug; | |
5ac6fc46 | 55 | extern int timeout; |
fdb56acd | 56 | extern int maxtimeout; |
07fffe50 | 57 | extern int pdata; |
843d1a1c | 58 | extern char hostname[], remotehost[]; |
fdb56acd | 59 | extern char proctitle[]; |
25d264e2 | 60 | extern char *globerr; |
1d92d63d | 61 | extern int usedefault; |
07fffe50 GM |
62 | extern int transflag; |
63 | extern char tmpline[]; | |
25d264e2 SL |
64 | char **glob(); |
65 | ||
66 | static int cmd_type; | |
67 | static int cmd_form; | |
68 | static int cmd_bytesz; | |
882508af MK |
69 | char cbuf[512]; |
70 | char *fromname; | |
25d264e2 | 71 | |
25d264e2 SL |
72 | char *index(); |
73 | %} | |
74 | ||
75 | %token | |
76 | A B C E F I | |
77 | L N P R S T | |
78 | ||
79 | SP CRLF COMMA STRING NUMBER | |
80 | ||
81 | USER PASS ACCT REIN QUIT PORT | |
82 | PASV TYPE STRU MODE RETR STOR | |
83 | APPE MLFL MAIL MSND MSOM MSAM | |
84 | MRSQ MRCP ALLO REST RNFR RNTO | |
85 | ABOR DELE CWD LIST NLST SITE | |
843d1a1c | 86 | STAT HELP NOOP MKD RMD PWD |
fdb56acd MK |
87 | CDUP STOU SMNT SYST SIZE MDTM |
88 | ||
89 | UMASK IDLE CHMOD | |
25d264e2 SL |
90 | |
91 | LEXERR | |
92 | ||
93 | %start cmd_list | |
94 | ||
95 | %% | |
96 | ||
97 | cmd_list: /* empty */ | |
98 | | cmd_list cmd | |
ec67a549 SJ |
99 | = { |
100 | fromname = (char *) 0; | |
101 | } | |
102 | | cmd_list rcmd | |
25d264e2 SL |
103 | ; |
104 | ||
105 | cmd: USER SP username CRLF | |
106 | = { | |
882508af | 107 | user((char *) $3); |
df2f99b4 | 108 | free((char *) $3); |
25d264e2 SL |
109 | } |
110 | | PASS SP password CRLF | |
111 | = { | |
df2f99b4 GM |
112 | pass((char *) $3); |
113 | free((char *) $3); | |
25d264e2 SL |
114 | } |
115 | | PORT SP host_port CRLF | |
116 | = { | |
1d92d63d | 117 | usedefault = 0; |
882508af | 118 | if (pdata >= 0) { |
07fffe50 | 119 | (void) close(pdata); |
882508af | 120 | pdata = -1; |
07fffe50 | 121 | } |
7ccaf1e3 | 122 | reply(200, "PORT command successful."); |
25d264e2 | 123 | } |
07fffe50 GM |
124 | | PASV CRLF |
125 | = { | |
126 | passive(); | |
127 | } | |
25d264e2 SL |
128 | | TYPE SP type_code CRLF |
129 | = { | |
130 | switch (cmd_type) { | |
131 | ||
132 | case TYPE_A: | |
133 | if (cmd_form == FORM_N) { | |
134 | reply(200, "Type set to A."); | |
135 | type = cmd_type; | |
136 | form = cmd_form; | |
137 | } else | |
138 | reply(504, "Form must be N."); | |
139 | break; | |
140 | ||
141 | case TYPE_E: | |
142 | reply(504, "Type E not implemented."); | |
143 | break; | |
144 | ||
145 | case TYPE_I: | |
146 | reply(200, "Type set to I."); | |
147 | type = cmd_type; | |
148 | break; | |
149 | ||
150 | case TYPE_L: | |
fdb56acd MK |
151 | #if NBBY == 8 |
152 | if (cmd_bytesz == 8) { | |
25d264e2 | 153 | reply(200, |
fdb56acd | 154 | "Type set to L (byte size 8)."); |
25d264e2 SL |
155 | type = cmd_type; |
156 | } else | |
fdb56acd MK |
157 | reply(504, "Byte size must be 8."); |
158 | #else /* NBBY == 8 */ | |
159 | UNIMPLEMENTED for NBBY != 8 | |
160 | #endif /* NBBY == 8 */ | |
25d264e2 SL |
161 | } |
162 | } | |
163 | | STRU SP struct_code CRLF | |
164 | = { | |
165 | switch ($3) { | |
166 | ||
167 | case STRU_F: | |
168 | reply(200, "STRU F ok."); | |
169 | break; | |
170 | ||
171 | default: | |
7ccaf1e3 | 172 | reply(504, "Unimplemented STRU type."); |
25d264e2 SL |
173 | } |
174 | } | |
175 | | MODE SP mode_code CRLF | |
176 | = { | |
177 | switch ($3) { | |
178 | ||
179 | case MODE_S: | |
180 | reply(200, "MODE S ok."); | |
181 | break; | |
182 | ||
183 | default: | |
184 | reply(502, "Unimplemented MODE type."); | |
185 | } | |
186 | } | |
187 | | ALLO SP NUMBER CRLF | |
188 | = { | |
7ccaf1e3 | 189 | reply(202, "ALLO command ignored."); |
25d264e2 | 190 | } |
fdb56acd MK |
191 | | ALLO SP NUMBER SP R SP NUMBER CRLF |
192 | = { | |
193 | reply(202, "ALLO command ignored."); | |
194 | } | |
25d264e2 SL |
195 | | RETR check_login SP pathname CRLF |
196 | = { | |
8365e2f7 | 197 | if ($2 && $4 != NULL) |
fdb56acd | 198 | retrieve((char *) 0, (char *) $4); |
8365e2f7 | 199 | if ($4 != NULL) |
df2f99b4 | 200 | free((char *) $4); |
25d264e2 SL |
201 | } |
202 | | STOR check_login SP pathname CRLF | |
203 | = { | |
8365e2f7 | 204 | if ($2 && $4 != NULL) |
882508af | 205 | store((char *) $4, "w", 0); |
8365e2f7 | 206 | if ($4 != NULL) |
df2f99b4 | 207 | free((char *) $4); |
25d264e2 SL |
208 | } |
209 | | APPE check_login SP pathname CRLF | |
210 | = { | |
8365e2f7 | 211 | if ($2 && $4 != NULL) |
882508af | 212 | store((char *) $4, "a", 0); |
8365e2f7 | 213 | if ($4 != NULL) |
df2f99b4 | 214 | free((char *) $4); |
25d264e2 SL |
215 | } |
216 | | NLST check_login CRLF | |
217 | = { | |
218 | if ($2) | |
843d1a1c | 219 | send_file_list("."); |
25d264e2 | 220 | } |
843d1a1c | 221 | | NLST check_login SP STRING CRLF |
25d264e2 | 222 | = { |
843d1a1c RA |
223 | if ($2 && $4 != NULL) |
224 | send_file_list((char *) $4); | |
8365e2f7 | 225 | if ($4 != NULL) |
df2f99b4 | 226 | free((char *) $4); |
25d264e2 SL |
227 | } |
228 | | LIST check_login CRLF | |
229 | = { | |
230 | if ($2) | |
843d1a1c | 231 | retrieve("/bin/ls -lgA", ""); |
25d264e2 SL |
232 | } |
233 | | LIST check_login SP pathname CRLF | |
234 | = { | |
8365e2f7 | 235 | if ($2 && $4 != NULL) |
843d1a1c | 236 | retrieve("/bin/ls -lgA %s", (char *) $4); |
8365e2f7 | 237 | if ($4 != NULL) |
df2f99b4 | 238 | free((char *) $4); |
25d264e2 | 239 | } |
fdb56acd MK |
240 | | STAT check_login SP pathname CRLF |
241 | = { | |
242 | if ($2 && $4 != NULL) | |
243 | statfilecmd((char *) $4); | |
244 | if ($4 != NULL) | |
245 | free((char *) $4); | |
246 | } | |
247 | | STAT CRLF | |
248 | = { | |
249 | statcmd(); | |
250 | } | |
25d264e2 SL |
251 | | DELE check_login SP pathname CRLF |
252 | = { | |
8365e2f7 | 253 | if ($2 && $4 != NULL) |
df2f99b4 | 254 | delete((char *) $4); |
8365e2f7 | 255 | if ($4 != NULL) |
df2f99b4 | 256 | free((char *) $4); |
25d264e2 | 257 | } |
ec67a549 SJ |
258 | | RNTO SP pathname CRLF |
259 | = { | |
260 | if (fromname) { | |
261 | renamecmd(fromname, (char *) $3); | |
262 | free(fromname); | |
263 | fromname = (char *) 0; | |
264 | } else { | |
265 | reply(503, "Bad sequence of commands."); | |
266 | } | |
267 | free((char *) $3); | |
268 | } | |
07fffe50 GM |
269 | | ABOR CRLF |
270 | = { | |
7ccaf1e3 | 271 | reply(225, "ABOR command successful."); |
07fffe50 | 272 | } |
25d264e2 SL |
273 | | CWD check_login CRLF |
274 | = { | |
275 | if ($2) | |
276 | cwd(pw->pw_dir); | |
277 | } | |
278 | | CWD check_login SP pathname CRLF | |
279 | = { | |
8365e2f7 | 280 | if ($2 && $4 != NULL) |
df2f99b4 | 281 | cwd((char *) $4); |
8365e2f7 | 282 | if ($4 != NULL) |
df2f99b4 | 283 | free((char *) $4); |
25d264e2 | 284 | } |
25d264e2 SL |
285 | | HELP CRLF |
286 | = { | |
fdb56acd | 287 | help(cmdtab, (char *) 0); |
25d264e2 SL |
288 | } |
289 | | HELP SP STRING CRLF | |
290 | = { | |
fdb56acd MK |
291 | register char *cp = (char *)$3; |
292 | ||
293 | if (strncasecmp(cp, "SITE", 4) == 0) { | |
294 | cp = (char *)$3 + 4; | |
295 | if (*cp == ' ') | |
296 | cp++; | |
297 | if (*cp) | |
298 | help(sitetab, cp); | |
299 | else | |
300 | help(sitetab, (char *) 0); | |
301 | } else | |
302 | help(cmdtab, (char *) $3); | |
25d264e2 SL |
303 | } |
304 | | NOOP CRLF | |
305 | = { | |
7ccaf1e3 | 306 | reply(200, "NOOP command successful."); |
25d264e2 | 307 | } |
843d1a1c | 308 | | MKD check_login SP pathname CRLF |
25d264e2 | 309 | = { |
8365e2f7 | 310 | if ($2 && $4 != NULL) |
df2f99b4 | 311 | makedir((char *) $4); |
8365e2f7 | 312 | if ($4 != NULL) |
df2f99b4 | 313 | free((char *) $4); |
25d264e2 | 314 | } |
843d1a1c | 315 | | RMD check_login SP pathname CRLF |
25d264e2 | 316 | = { |
8365e2f7 | 317 | if ($2 && $4 != NULL) |
df2f99b4 | 318 | removedir((char *) $4); |
8365e2f7 | 319 | if ($4 != NULL) |
df2f99b4 | 320 | free((char *) $4); |
25d264e2 | 321 | } |
843d1a1c | 322 | | PWD check_login CRLF |
25d264e2 SL |
323 | = { |
324 | if ($2) | |
8365e2f7 | 325 | pwd(); |
25d264e2 | 326 | } |
843d1a1c | 327 | | CDUP check_login CRLF |
25d264e2 SL |
328 | = { |
329 | if ($2) | |
330 | cwd(".."); | |
331 | } | |
fdb56acd MK |
332 | | SITE SP HELP CRLF |
333 | = { | |
334 | help(sitetab, (char *) 0); | |
335 | } | |
336 | | SITE SP HELP SP STRING CRLF | |
337 | = { | |
338 | help(sitetab, (char *) $5); | |
339 | } | |
340 | | SITE SP UMASK check_login CRLF | |
341 | = { | |
342 | int oldmask; | |
343 | ||
344 | if ($4) { | |
345 | oldmask = umask(0); | |
346 | (void) umask(oldmask); | |
347 | reply(200, "Current UMASK is %03o", oldmask); | |
348 | } | |
349 | } | |
350 | | SITE SP UMASK check_login SP octal_number CRLF | |
351 | = { | |
352 | int oldmask; | |
353 | ||
354 | if ($4) { | |
355 | if (($6 == -1) || ($6 > 0777)) { | |
356 | reply(501, "Bad UMASK value"); | |
357 | } else { | |
358 | oldmask = umask($6); | |
359 | reply(200, | |
360 | "UMASK set to %03o (was %03o)", | |
361 | $6, oldmask); | |
362 | } | |
363 | } | |
364 | } | |
365 | | SITE SP CHMOD check_login SP octal_number SP pathname CRLF | |
366 | = { | |
367 | if ($4 && ($8 != NULL)) { | |
368 | if ($6 > 0777) | |
369 | reply(501, | |
370 | "CHMOD: Mode value must be between 0 and 0777"); | |
371 | else if (chmod((char *) $8, $6) < 0) | |
372 | perror_reply(550, (char *) $8); | |
373 | else | |
374 | reply(200, "CHMOD command successful."); | |
375 | } | |
376 | if ($8 != NULL) | |
377 | free((char *) $8); | |
378 | } | |
379 | | SITE SP IDLE CRLF | |
380 | = { | |
381 | reply(200, | |
382 | "Current IDLE time limit is %d seconds; max %d", | |
383 | timeout, maxtimeout); | |
384 | } | |
385 | | SITE SP IDLE SP NUMBER CRLF | |
386 | = { | |
387 | if ($5 < 30 || $5 > maxtimeout) { | |
388 | reply(501, | |
389 | "Maximum IDLE time must be between 30 and %d seconds", | |
390 | maxtimeout); | |
391 | } else { | |
392 | timeout = $5; | |
393 | (void) alarm((unsigned) timeout); | |
394 | reply(200, | |
395 | "Maximum IDLE time set to %d seconds", | |
396 | timeout); | |
397 | } | |
398 | } | |
07fffe50 GM |
399 | | STOU check_login SP pathname CRLF |
400 | = { | |
882508af MK |
401 | if ($2 && $4 != NULL) |
402 | store((char *) $4, "w", 1); | |
07fffe50 | 403 | if ($4 != NULL) |
df2f99b4 | 404 | free((char *) $4); |
07fffe50 | 405 | } |
4d340163 KB |
406 | | SYST CRLF |
407 | = { | |
ff8adb76 | 408 | #ifdef unix |
fdb56acd | 409 | #ifdef BSD |
4d340163 KB |
410 | reply(215, "UNIX Type: L%d Version: BSD-%d", |
411 | NBBY, BSD); | |
fdb56acd MK |
412 | #else /* BSD */ |
413 | reply(215, "UNIX Type: L%d", NBBY); | |
414 | #endif /* BSD */ | |
415 | #else /* unix */ | |
416 | reply(215, "UNKNOWN Type: L%d", NBBY); | |
417 | #endif /* unix */ | |
418 | } | |
419 | ||
420 | /* | |
421 | * SIZE is not in RFC959, but Postel has blessed it and | |
422 | * it will be in the updated RFC. | |
423 | * | |
424 | * Return size of file in a format suitable for | |
425 | * using with RESTART (we just count bytes). | |
426 | */ | |
427 | | SIZE check_login SP pathname CRLF | |
428 | = { | |
429 | if ($2 && $4 != NULL) | |
430 | sizecmd((char *) $4); | |
431 | if ($4 != NULL) | |
432 | free((char *) $4); | |
433 | } | |
434 | ||
435 | /* | |
436 | * MDTM is not in RFC959, but Postel has blessed it and | |
437 | * it will be in the updated RFC. | |
438 | * | |
439 | * Return modification time of file as an ISO 3307 | |
440 | * style time. E.g. YYYYMMDDHHMMSS or YYYYMMDDHHMMSS.xxx | |
441 | * where xxx is the fractional second (of any precision, | |
442 | * not necessarily 3 digits) | |
443 | */ | |
444 | | MDTM check_login SP pathname CRLF | |
445 | = { | |
446 | if ($2 && $4 != NULL) { | |
447 | struct stat stbuf; | |
448 | if (stat((char *) $4, &stbuf) < 0) | |
449 | perror_reply(550, "%s", (char *) $4); | |
450 | else if ((stbuf.st_mode&S_IFMT) != S_IFREG) { | |
451 | reply(550, "%s: not a plain file.", | |
452 | (char *) $4); | |
453 | } else { | |
454 | register struct tm *t; | |
455 | struct tm *gmtime(); | |
456 | t = gmtime(&stbuf.st_mtime); | |
457 | reply(213, | |
458 | "19%02d%02d%02d%02d%02d%02d", | |
459 | t->tm_year, t->tm_mon+1, t->tm_mday, | |
460 | t->tm_hour, t->tm_min, t->tm_sec); | |
461 | } | |
462 | } | |
463 | if ($4 != NULL) | |
464 | free((char *) $4); | |
4d340163 | 465 | } |
25d264e2 SL |
466 | | QUIT CRLF |
467 | = { | |
468 | reply(221, "Goodbye."); | |
bb16805b | 469 | dologout(0); |
25d264e2 SL |
470 | } |
471 | | error CRLF | |
472 | = { | |
473 | yyerrok; | |
474 | } | |
475 | ; | |
ec67a549 SJ |
476 | rcmd: RNFR check_login SP pathname CRLF |
477 | = { | |
478 | char *renamefrom(); | |
479 | ||
480 | if ($2 && $4) { | |
481 | fromname = renamefrom((char *) $4); | |
482 | if (fromname == (char *) 0 && $4) { | |
483 | free((char *) $4); | |
484 | } | |
485 | } | |
486 | } | |
487 | ; | |
488 | ||
25d264e2 SL |
489 | username: STRING |
490 | ; | |
491 | ||
882508af MK |
492 | password: /* empty */ |
493 | = { | |
fdb56acd | 494 | *(char **)&($$) = ""; |
882508af MK |
495 | } |
496 | | STRING | |
25d264e2 SL |
497 | ; |
498 | ||
499 | byte_size: NUMBER | |
500 | ; | |
501 | ||
502 | host_port: NUMBER COMMA NUMBER COMMA NUMBER COMMA NUMBER COMMA | |
503 | NUMBER COMMA NUMBER | |
504 | = { | |
505 | register char *a, *p; | |
506 | ||
507 | a = (char *)&data_dest.sin_addr; | |
508 | a[0] = $1; a[1] = $3; a[2] = $5; a[3] = $7; | |
509 | p = (char *)&data_dest.sin_port; | |
510 | p[0] = $9; p[1] = $11; | |
5914191e | 511 | data_dest.sin_family = AF_INET; |
25d264e2 SL |
512 | } |
513 | ; | |
514 | ||
515 | form_code: N | |
516 | = { | |
517 | $$ = FORM_N; | |
518 | } | |
519 | | T | |
520 | = { | |
521 | $$ = FORM_T; | |
522 | } | |
523 | | C | |
524 | = { | |
525 | $$ = FORM_C; | |
526 | } | |
527 | ; | |
528 | ||
529 | type_code: A | |
530 | = { | |
531 | cmd_type = TYPE_A; | |
532 | cmd_form = FORM_N; | |
533 | } | |
534 | | A SP form_code | |
535 | = { | |
536 | cmd_type = TYPE_A; | |
537 | cmd_form = $3; | |
538 | } | |
539 | | E | |
540 | = { | |
541 | cmd_type = TYPE_E; | |
542 | cmd_form = FORM_N; | |
543 | } | |
544 | | E SP form_code | |
545 | = { | |
546 | cmd_type = TYPE_E; | |
547 | cmd_form = $3; | |
548 | } | |
549 | | I | |
550 | = { | |
551 | cmd_type = TYPE_I; | |
552 | } | |
553 | | L | |
554 | = { | |
555 | cmd_type = TYPE_L; | |
4d340163 | 556 | cmd_bytesz = NBBY; |
25d264e2 SL |
557 | } |
558 | | L SP byte_size | |
559 | = { | |
560 | cmd_type = TYPE_L; | |
561 | cmd_bytesz = $3; | |
562 | } | |
563 | /* this is for a bug in the BBN ftp */ | |
564 | | L byte_size | |
565 | = { | |
566 | cmd_type = TYPE_L; | |
567 | cmd_bytesz = $2; | |
568 | } | |
569 | ; | |
570 | ||
571 | struct_code: F | |
572 | = { | |
573 | $$ = STRU_F; | |
574 | } | |
575 | | R | |
576 | = { | |
577 | $$ = STRU_R; | |
578 | } | |
579 | | P | |
580 | = { | |
581 | $$ = STRU_P; | |
582 | } | |
583 | ; | |
584 | ||
585 | mode_code: S | |
586 | = { | |
587 | $$ = MODE_S; | |
588 | } | |
589 | | B | |
590 | = { | |
591 | $$ = MODE_B; | |
592 | } | |
593 | | C | |
594 | = { | |
595 | $$ = MODE_C; | |
596 | } | |
597 | ; | |
598 | ||
599 | pathname: pathstring | |
600 | = { | |
7ccaf1e3 KM |
601 | /* |
602 | * Problem: this production is used for all pathname | |
603 | * processing, but only gives a 550 error reply. | |
604 | * This is a valid reply in some cases but not in others. | |
605 | */ | |
882508af | 606 | if (logged_in && $1 && strncmp((char *) $1, "~", 1) == 0) { |
fdb56acd | 607 | *(char **)&($$) = *glob((char *) $1); |
8365e2f7 | 608 | if (globerr != NULL) { |
25d264e2 | 609 | reply(550, globerr); |
8365e2f7 SL |
610 | $$ = NULL; |
611 | } | |
df2f99b4 | 612 | free((char *) $1); |
25d264e2 SL |
613 | } else |
614 | $$ = $1; | |
615 | } | |
616 | ; | |
617 | ||
618 | pathstring: STRING | |
619 | ; | |
620 | ||
fdb56acd MK |
621 | octal_number: NUMBER |
622 | = { | |
623 | register int ret, dec, multby, digit; | |
624 | ||
625 | /* | |
626 | * Convert a number that was read as decimal number | |
627 | * to what it would be if it had been read as octal. | |
628 | */ | |
629 | dec = $1; | |
630 | multby = 1; | |
631 | ret = 0; | |
632 | while (dec) { | |
633 | digit = dec%10; | |
634 | if (digit > 7) { | |
635 | ret = -1; | |
636 | break; | |
637 | } | |
638 | ret += digit * multby; | |
639 | multby *= 8; | |
640 | dec /= 10; | |
641 | } | |
642 | $$ = ret; | |
643 | } | |
644 | ; | |
645 | ||
25d264e2 SL |
646 | check_login: /* empty */ |
647 | = { | |
648 | if (logged_in) | |
649 | $$ = 1; | |
650 | else { | |
651 | reply(530, "Please login with USER and PASS."); | |
652 | $$ = 0; | |
653 | } | |
654 | } | |
655 | ; | |
656 | ||
657 | %% | |
658 | ||
659 | extern jmp_buf errcatch; | |
660 | ||
661 | #define CMD 0 /* beginning of command */ | |
662 | #define ARGS 1 /* expect miscellaneous arguments */ | |
663 | #define STR1 2 /* expect SP followed by STRING */ | |
664 | #define STR2 3 /* expect STRING */ | |
882508af MK |
665 | #define OSTR 4 /* optional SP then STRING */ |
666 | #define ZSTR1 5 /* SP then optional STRING */ | |
667 | #define ZSTR2 6 /* optional STRING after SP */ | |
fdb56acd MK |
668 | #define SITECMD 7 /* SITE command */ |
669 | #define NSTR 8 /* Number followed by a string */ | |
25d264e2 SL |
670 | |
671 | struct tab { | |
672 | char *name; | |
673 | short token; | |
674 | short state; | |
675 | short implemented; /* 1 if command is implemented */ | |
676 | char *help; | |
677 | }; | |
678 | ||
679 | struct tab cmdtab[] = { /* In order defined in RFC 765 */ | |
680 | { "USER", USER, STR1, 1, "<sp> username" }, | |
882508af | 681 | { "PASS", PASS, ZSTR1, 1, "<sp> password" }, |
25d264e2 | 682 | { "ACCT", ACCT, STR1, 0, "(specify account)" }, |
fdb56acd | 683 | { "SMNT", SMNT, ARGS, 0, "(structure mount)" }, |
25d264e2 SL |
684 | { "REIN", REIN, ARGS, 0, "(reinitialize server state)" }, |
685 | { "QUIT", QUIT, ARGS, 1, "(terminate service)", }, | |
686 | { "PORT", PORT, ARGS, 1, "<sp> b0, b1, b2, b3, b4" }, | |
07fffe50 | 687 | { "PASV", PASV, ARGS, 1, "(set server in passive mode)" }, |
25d264e2 SL |
688 | { "TYPE", TYPE, ARGS, 1, "<sp> [ A | E | I | L ]" }, |
689 | { "STRU", STRU, ARGS, 1, "(specify file structure)" }, | |
690 | { "MODE", MODE, ARGS, 1, "(specify transfer mode)" }, | |
691 | { "RETR", RETR, STR1, 1, "<sp> file-name" }, | |
692 | { "STOR", STOR, STR1, 1, "<sp> file-name" }, | |
693 | { "APPE", APPE, STR1, 1, "<sp> file-name" }, | |
694 | { "MLFL", MLFL, OSTR, 0, "(mail file)" }, | |
695 | { "MAIL", MAIL, OSTR, 0, "(mail to user)" }, | |
696 | { "MSND", MSND, OSTR, 0, "(mail send to terminal)" }, | |
697 | { "MSOM", MSOM, OSTR, 0, "(mail send to terminal or mailbox)" }, | |
698 | { "MSAM", MSAM, OSTR, 0, "(mail send to terminal and mailbox)" }, | |
699 | { "MRSQ", MRSQ, OSTR, 0, "(mail recipient scheme question)" }, | |
700 | { "MRCP", MRCP, STR1, 0, "(mail recipient)" }, | |
701 | { "ALLO", ALLO, ARGS, 1, "allocate storage (vacuously)" }, | |
8ba00015 | 702 | { "REST", REST, ARGS, 0, "(restart command)" }, |
25d264e2 SL |
703 | { "RNFR", RNFR, STR1, 1, "<sp> file-name" }, |
704 | { "RNTO", RNTO, STR1, 1, "<sp> file-name" }, | |
07fffe50 | 705 | { "ABOR", ABOR, ARGS, 1, "(abort operation)" }, |
25d264e2 | 706 | { "DELE", DELE, STR1, 1, "<sp> file-name" }, |
882508af | 707 | { "CWD", CWD, OSTR, 1, "[ <sp> directory-name ]" }, |
25d264e2 SL |
708 | { "XCWD", CWD, OSTR, 1, "[ <sp> directory-name ]" }, |
709 | { "LIST", LIST, OSTR, 1, "[ <sp> path-name ]" }, | |
710 | { "NLST", NLST, OSTR, 1, "[ <sp> path-name ]" }, | |
fdb56acd | 711 | { "SITE", SITE, SITECMD, 1, "site-cmd [ <sp> arguments ]" }, |
4d340163 | 712 | { "SYST", SYST, ARGS, 1, "(get type of operating system)" }, |
fdb56acd | 713 | { "STAT", STAT, OSTR, 1, "[ <sp> path-name ]" }, |
25d264e2 SL |
714 | { "HELP", HELP, OSTR, 1, "[ <sp> <string> ]" }, |
715 | { "NOOP", NOOP, ARGS, 1, "" }, | |
843d1a1c RA |
716 | { "MKD", MKD, STR1, 1, "<sp> path-name" }, |
717 | { "XMKD", MKD, STR1, 1, "<sp> path-name" }, | |
718 | { "RMD", RMD, STR1, 1, "<sp> path-name" }, | |
719 | { "XRMD", RMD, STR1, 1, "<sp> path-name" }, | |
720 | { "PWD", PWD, ARGS, 1, "(return current directory)" }, | |
721 | { "XPWD", PWD, ARGS, 1, "(return current directory)" }, | |
722 | { "CDUP", CDUP, ARGS, 1, "(change to parent directory)" }, | |
723 | { "XCUP", CDUP, ARGS, 1, "(change to parent directory)" }, | |
07fffe50 | 724 | { "STOU", STOU, STR1, 1, "<sp> file-name" }, |
fdb56acd MK |
725 | { "SIZE", SIZE, OSTR, 1, "<sp> path-name" }, |
726 | { "MDTM", MDTM, OSTR, 1, "<sp> path-name" }, | |
727 | { NULL, 0, 0, 0, 0 } | |
728 | }; | |
729 | ||
730 | struct tab sitetab[] = { | |
731 | { "UMASK", UMASK, ARGS, 1, "[ <sp> umask ]" }, | |
732 | { "IDLE", IDLE, ARGS, 1, "[ <sp> maximum-idle-time ]" }, | |
733 | { "CHMOD", CHMOD, NSTR, 1, "<sp> mode <sp> file-name" }, | |
734 | { "HELP", HELP, OSTR, 1, "[ <sp> <string> ]" }, | |
25d264e2 SL |
735 | { NULL, 0, 0, 0, 0 } |
736 | }; | |
737 | ||
738 | struct tab * | |
fdb56acd MK |
739 | lookup(p, cmd) |
740 | register struct tab *p; | |
25d264e2 SL |
741 | char *cmd; |
742 | { | |
25d264e2 | 743 | |
fdb56acd | 744 | for (; p->name != NULL; p++) |
25d264e2 SL |
745 | if (strcmp(cmd, p->name) == 0) |
746 | return (p); | |
747 | return (0); | |
748 | } | |
749 | ||
23eeaca6 | 750 | #include <arpa/telnet.h> |
25d264e2 SL |
751 | |
752 | /* | |
753 | * getline - a hacked up version of fgets to ignore TELNET escape codes. | |
754 | */ | |
755 | char * | |
756 | getline(s, n, iop) | |
757 | char *s; | |
758 | register FILE *iop; | |
759 | { | |
760 | register c; | |
df2f99b4 | 761 | register char *cs; |
25d264e2 SL |
762 | |
763 | cs = s; | |
b7cc6a20 | 764 | /* tmpline may contain saved command from urgent mode interruption */ |
07fffe50 GM |
765 | for (c = 0; tmpline[c] != '\0' && --n > 0; ++c) { |
766 | *cs++ = tmpline[c]; | |
767 | if (tmpline[c] == '\n') { | |
768 | *cs++ = '\0'; | |
882508af MK |
769 | if (debug) |
770 | syslog(LOG_DEBUG, "command: %s", s); | |
07fffe50 GM |
771 | tmpline[0] = '\0'; |
772 | return(s); | |
773 | } | |
882508af | 774 | if (c == 0) |
07fffe50 | 775 | tmpline[0] = '\0'; |
07fffe50 | 776 | } |
882508af MK |
777 | while ((c = getc(iop)) != EOF) { |
778 | c &= 0377; | |
779 | if (c == IAC) { | |
780 | if ((c = getc(iop)) != EOF) { | |
781 | c &= 0377; | |
782 | switch (c) { | |
b7cc6a20 GM |
783 | case WILL: |
784 | case WONT: | |
5256bbac | 785 | c = getc(iop); |
882508af | 786 | printf("%c%c%c", IAC, DONT, 0377&c); |
b7cc6a20 | 787 | (void) fflush(stdout); |
882508af | 788 | continue; |
b7cc6a20 GM |
789 | case DO: |
790 | case DONT: | |
5256bbac | 791 | c = getc(iop); |
882508af | 792 | printf("%c%c%c", IAC, WONT, 0377&c); |
b7cc6a20 | 793 | (void) fflush(stdout); |
882508af MK |
794 | continue; |
795 | case IAC: | |
b7cc6a20 GM |
796 | break; |
797 | default: | |
882508af | 798 | continue; /* ignore command */ |
b7cc6a20 | 799 | } |
882508af | 800 | } |
25d264e2 | 801 | } |
882508af MK |
802 | *cs++ = c; |
803 | if (--n <= 0 || c == '\n') | |
25d264e2 SL |
804 | break; |
805 | } | |
b7cc6a20 | 806 | if (c == EOF && cs == s) |
418345d1 | 807 | return (NULL); |
25d264e2 | 808 | *cs++ = '\0'; |
882508af MK |
809 | if (debug) |
810 | syslog(LOG_DEBUG, "command: %s", s); | |
25d264e2 SL |
811 | return (s); |
812 | } | |
813 | ||
5ac6fc46 SL |
814 | static int |
815 | toolong() | |
816 | { | |
df2f99b4 | 817 | time_t now; |
5ac6fc46 | 818 | extern char *ctime(); |
df2f99b4 | 819 | extern time_t time(); |
5ac6fc46 SL |
820 | |
821 | reply(421, | |
822 | "Timeout (%d seconds): closing control connection.", timeout); | |
df2f99b4 | 823 | (void) time(&now); |
5ac6fc46 | 824 | if (logging) { |
df2f99b4 | 825 | syslog(LOG_INFO, |
882508af | 826 | "User %s timed out after %d seconds at %s", |
5ac6fc46 | 827 | (pw ? pw -> pw_name : "unknown"), timeout, ctime(&now)); |
5ac6fc46 | 828 | } |
bb16805b | 829 | dologout(1); |
5ac6fc46 SL |
830 | } |
831 | ||
25d264e2 SL |
832 | yylex() |
833 | { | |
25d264e2 | 834 | static int cpos, state; |
fdb56acd | 835 | register char *cp, *cp2; |
25d264e2 SL |
836 | register struct tab *p; |
837 | int n; | |
5256bbac | 838 | char c, *strpbrk(); |
fdb56acd | 839 | char *copy(); |
25d264e2 SL |
840 | |
841 | for (;;) { | |
842 | switch (state) { | |
843 | ||
844 | case CMD: | |
df2f99b4 GM |
845 | (void) signal(SIGALRM, toolong); |
846 | (void) alarm((unsigned) timeout); | |
25d264e2 SL |
847 | if (getline(cbuf, sizeof(cbuf)-1, stdin) == NULL) { |
848 | reply(221, "You could at least say goodbye."); | |
bb16805b | 849 | dologout(0); |
25d264e2 | 850 | } |
df2f99b4 | 851 | (void) alarm(0); |
843d1a1c | 852 | #ifdef SETPROCTITLE |
fdb56acd MK |
853 | if (strncasecmp(cbuf, "PASS", 4) != NULL) |
854 | setproctitle("%s: %s", proctitle, cbuf); | |
843d1a1c | 855 | #endif /* SETPROCTITLE */ |
02b12178 KB |
856 | if ((cp = index(cbuf, '\r'))) { |
857 | *cp++ = '\n'; | |
858 | *cp = '\0'; | |
859 | } | |
5256bbac KB |
860 | if ((cp = strpbrk(cbuf, " \n"))) |
861 | cpos = cp - cbuf; | |
882508af | 862 | if (cpos == 0) |
25d264e2 SL |
863 | cpos = 4; |
864 | c = cbuf[cpos]; | |
865 | cbuf[cpos] = '\0'; | |
866 | upper(cbuf); | |
fdb56acd | 867 | p = lookup(cmdtab, cbuf); |
25d264e2 SL |
868 | cbuf[cpos] = c; |
869 | if (p != 0) { | |
870 | if (p->implemented == 0) { | |
871 | nack(p->name); | |
df2f99b4 | 872 | longjmp(errcatch,0); |
25d264e2 SL |
873 | /* NOTREACHED */ |
874 | } | |
875 | state = p->state; | |
fdb56acd | 876 | *(char **)&yylval = p->name; |
25d264e2 SL |
877 | return (p->token); |
878 | } | |
879 | break; | |
880 | ||
fdb56acd MK |
881 | case SITECMD: |
882 | if (cbuf[cpos] == ' ') { | |
883 | cpos++; | |
884 | return (SP); | |
885 | } | |
886 | cp = &cbuf[cpos]; | |
887 | if ((cp2 = strpbrk(cp, " \n"))) | |
888 | cpos = cp2 - cbuf; | |
889 | c = cbuf[cpos]; | |
890 | cbuf[cpos] = '\0'; | |
891 | upper(cp); | |
892 | p = lookup(sitetab, cp); | |
893 | cbuf[cpos] = c; | |
894 | if (p != 0) { | |
895 | if (p->implemented == 0) { | |
896 | state = CMD; | |
897 | nack(p->name); | |
898 | longjmp(errcatch,0); | |
899 | /* NOTREACHED */ | |
900 | } | |
901 | state = p->state; | |
902 | *(char **)&yylval = p->name; | |
903 | return (p->token); | |
904 | } | |
905 | state = CMD; | |
906 | break; | |
907 | ||
25d264e2 SL |
908 | case OSTR: |
909 | if (cbuf[cpos] == '\n') { | |
910 | state = CMD; | |
911 | return (CRLF); | |
912 | } | |
9103ec12 | 913 | /* FALLTHROUGH */ |
25d264e2 SL |
914 | |
915 | case STR1: | |
882508af | 916 | case ZSTR1: |
fdb56acd | 917 | dostr1: |
25d264e2 SL |
918 | if (cbuf[cpos] == ' ') { |
919 | cpos++; | |
9103ec12 | 920 | state = state == OSTR ? STR2 : ++state; |
25d264e2 SL |
921 | return (SP); |
922 | } | |
923 | break; | |
924 | ||
882508af MK |
925 | case ZSTR2: |
926 | if (cbuf[cpos] == '\n') { | |
927 | state = CMD; | |
928 | return (CRLF); | |
929 | } | |
fdb56acd | 930 | /* FALLTHROUGH */ |
882508af | 931 | |
25d264e2 SL |
932 | case STR2: |
933 | cp = &cbuf[cpos]; | |
934 | n = strlen(cp); | |
935 | cpos += n - 1; | |
936 | /* | |
937 | * Make sure the string is nonempty and \n terminated. | |
938 | */ | |
939 | if (n > 1 && cbuf[cpos] == '\n') { | |
940 | cbuf[cpos] = '\0'; | |
fdb56acd | 941 | *(char **)&yylval = copy(cp); |
25d264e2 SL |
942 | cbuf[cpos] = '\n'; |
943 | state = ARGS; | |
944 | return (STRING); | |
945 | } | |
946 | break; | |
947 | ||
fdb56acd MK |
948 | case NSTR: |
949 | if (cbuf[cpos] == ' ') { | |
950 | cpos++; | |
951 | return (SP); | |
952 | } | |
953 | if (isdigit(cbuf[cpos])) { | |
954 | cp = &cbuf[cpos]; | |
955 | while (isdigit(cbuf[++cpos])) | |
956 | ; | |
957 | c = cbuf[cpos]; | |
958 | cbuf[cpos] = '\0'; | |
959 | yylval = atoi(cp); | |
960 | cbuf[cpos] = c; | |
961 | state = STR1; | |
962 | return (NUMBER); | |
963 | } | |
964 | state = STR1; | |
965 | goto dostr1; | |
966 | ||
25d264e2 SL |
967 | case ARGS: |
968 | if (isdigit(cbuf[cpos])) { | |
969 | cp = &cbuf[cpos]; | |
970 | while (isdigit(cbuf[++cpos])) | |
971 | ; | |
972 | c = cbuf[cpos]; | |
973 | cbuf[cpos] = '\0'; | |
974 | yylval = atoi(cp); | |
975 | cbuf[cpos] = c; | |
976 | return (NUMBER); | |
977 | } | |
978 | switch (cbuf[cpos++]) { | |
979 | ||
980 | case '\n': | |
981 | state = CMD; | |
982 | return (CRLF); | |
983 | ||
984 | case ' ': | |
985 | return (SP); | |
986 | ||
987 | case ',': | |
988 | return (COMMA); | |
989 | ||
990 | case 'A': | |
991 | case 'a': | |
992 | return (A); | |
993 | ||
994 | case 'B': | |
995 | case 'b': | |
996 | return (B); | |
997 | ||
998 | case 'C': | |
999 | case 'c': | |
1000 | return (C); | |
1001 | ||
1002 | case 'E': | |
1003 | case 'e': | |
1004 | return (E); | |
1005 | ||
1006 | case 'F': | |
1007 | case 'f': | |
1008 | return (F); | |
1009 | ||
1010 | case 'I': | |
1011 | case 'i': | |
1012 | return (I); | |
1013 | ||
1014 | case 'L': | |
1015 | case 'l': | |
1016 | return (L); | |
1017 | ||
1018 | case 'N': | |
1019 | case 'n': | |
1020 | return (N); | |
1021 | ||
1022 | case 'P': | |
1023 | case 'p': | |
1024 | return (P); | |
1025 | ||
1026 | case 'R': | |
1027 | case 'r': | |
1028 | return (R); | |
1029 | ||
1030 | case 'S': | |
1031 | case 's': | |
1032 | return (S); | |
1033 | ||
1034 | case 'T': | |
1035 | case 't': | |
1036 | return (T); | |
1037 | ||
1038 | } | |
1039 | break; | |
1040 | ||
1041 | default: | |
1042 | fatal("Unknown state in scanner."); | |
1043 | } | |
df2f99b4 | 1044 | yyerror((char *) 0); |
25d264e2 | 1045 | state = CMD; |
df2f99b4 | 1046 | longjmp(errcatch,0); |
25d264e2 SL |
1047 | } |
1048 | } | |
1049 | ||
1050 | upper(s) | |
5256bbac | 1051 | register char *s; |
25d264e2 SL |
1052 | { |
1053 | while (*s != '\0') { | |
1054 | if (islower(*s)) | |
1055 | *s = toupper(*s); | |
1056 | s++; | |
1057 | } | |
1058 | } | |
1059 | ||
fdb56acd | 1060 | char * |
25d264e2 SL |
1061 | copy(s) |
1062 | char *s; | |
1063 | { | |
1064 | char *p; | |
df2f99b4 | 1065 | extern char *malloc(), *strcpy(); |
25d264e2 | 1066 | |
df2f99b4 | 1067 | p = malloc((unsigned) strlen(s) + 1); |
25d264e2 SL |
1068 | if (p == NULL) |
1069 | fatal("Ran out of memory."); | |
df2f99b4 | 1070 | (void) strcpy(p, s); |
fdb56acd | 1071 | return (p); |
25d264e2 SL |
1072 | } |
1073 | ||
fdb56acd MK |
1074 | help(ctab, s) |
1075 | struct tab *ctab; | |
25d264e2 SL |
1076 | char *s; |
1077 | { | |
1078 | register struct tab *c; | |
1079 | register int width, NCMDS; | |
fdb56acd | 1080 | char *type; |
25d264e2 | 1081 | |
fdb56acd MK |
1082 | if (ctab == sitetab) |
1083 | type = "SITE "; | |
1084 | else | |
1085 | type = ""; | |
25d264e2 | 1086 | width = 0, NCMDS = 0; |
fdb56acd MK |
1087 | for (c = ctab; c->name != NULL; c++) { |
1088 | int len = strlen(c->name); | |
25d264e2 | 1089 | |
25d264e2 SL |
1090 | if (len > width) |
1091 | width = len; | |
1092 | NCMDS++; | |
1093 | } | |
1094 | width = (width + 8) &~ 7; | |
1095 | if (s == 0) { | |
1096 | register int i, j, w; | |
1097 | int columns, lines; | |
1098 | ||
fdb56acd MK |
1099 | lreply(214, "The following %scommands are recognized %s.", |
1100 | type, "(* =>'s unimplemented)"); | |
25d264e2 SL |
1101 | columns = 76 / width; |
1102 | if (columns == 0) | |
1103 | columns = 1; | |
1104 | lines = (NCMDS + columns - 1) / columns; | |
1105 | for (i = 0; i < lines; i++) { | |
7ccaf1e3 | 1106 | printf(" "); |
25d264e2 | 1107 | for (j = 0; j < columns; j++) { |
fdb56acd | 1108 | c = ctab + j * lines + i; |
25d264e2 SL |
1109 | printf("%s%c", c->name, |
1110 | c->implemented ? ' ' : '*'); | |
fdb56acd | 1111 | if (c + lines >= &ctab[NCMDS]) |
25d264e2 | 1112 | break; |
30ed6738 | 1113 | w = strlen(c->name) + 1; |
25d264e2 SL |
1114 | while (w < width) { |
1115 | putchar(' '); | |
1116 | w++; | |
1117 | } | |
1118 | } | |
1119 | printf("\r\n"); | |
1120 | } | |
df2f99b4 | 1121 | (void) fflush(stdout); |
25d264e2 SL |
1122 | reply(214, "Direct comments to ftp-bugs@%s.", hostname); |
1123 | return; | |
1124 | } | |
1125 | upper(s); | |
fdb56acd | 1126 | c = lookup(ctab, s); |
25d264e2 | 1127 | if (c == (struct tab *)0) { |
7ccaf1e3 | 1128 | reply(502, "Unknown command %s.", s); |
25d264e2 SL |
1129 | return; |
1130 | } | |
1131 | if (c->implemented) | |
fdb56acd | 1132 | reply(214, "Syntax: %s%s %s", type, c->name, c->help); |
25d264e2 | 1133 | else |
fdb56acd MK |
1134 | reply(214, "%s%-*s\t%s; unimplemented.", type, width, |
1135 | c->name, c->help); | |
1136 | } | |
1137 | ||
1138 | sizecmd(filename) | |
1139 | char *filename; | |
1140 | { | |
1141 | switch (type) { | |
1142 | case TYPE_L: | |
1143 | case TYPE_I: { | |
1144 | struct stat stbuf; | |
1145 | if (stat(filename, &stbuf) < 0 || | |
1146 | (stbuf.st_mode&S_IFMT) != S_IFREG) | |
1147 | reply(550, "%s: not a plain file.", filename); | |
1148 | else | |
1149 | reply(213, "%lu", stbuf.st_size); | |
1150 | break;} | |
1151 | case TYPE_A: { | |
1152 | FILE *fin; | |
1153 | register int c, count; | |
1154 | struct stat stbuf; | |
1155 | fin = fopen(filename, "r"); | |
1156 | if (fin == NULL) { | |
1157 | perror_reply(550, filename); | |
1158 | return; | |
1159 | } | |
1160 | if (fstat(fileno(fin), &stbuf) < 0 || | |
1161 | (stbuf.st_mode&S_IFMT) != S_IFREG) { | |
1162 | reply(550, "%s: not a plain file.", filename); | |
1163 | (void) fclose(fin); | |
1164 | return; | |
1165 | } | |
1166 | ||
1167 | count = 0; | |
1168 | while((c=getc(fin)) != EOF) { | |
1169 | if (c == '\n') /* will get expanded to \r\n */ | |
1170 | count++; | |
1171 | count++; | |
1172 | } | |
1173 | (void) fclose(fin); | |
1174 | ||
1175 | reply(213, "%ld", count); | |
1176 | break;} | |
1177 | default: | |
1178 | reply(504, "SIZE not implemented for Type %c.", "?AEIL"[type]); | |
1179 | } | |
25d264e2 | 1180 | } |