Commit | Line | Data |
79072805 |
1 | #-*-perl-*- |
2 | # This is a wrapper to the chat2.pl routines that make life easier |
3 | # to do ftp type work. |
4 | # Mostly by Lee McLoughlin <lmjm@doc.ic.ac.uk> |
5 | # based on original version by Alan R. Martello <al@ee.pitt.edu> |
6 | # And by A.Macpherson@bnr.co.uk for multi-homed hosts |
7 | # |
8 | # $Header: /a/swan/home/swan/staff/csg/lmjm/src/perl/mirror/RCS/ftp.pl,v 1.17 1993/04/21 10:06:54 lmjm Exp lmjm $ |
9 | # $Log: ftp.pl,v $ |
10 | # Revision 1.17 1993/04/21 10:06:54 lmjm |
11 | # Send all status reports to STDERR not to STDOUT (to allow use by ftpcat). |
12 | # Allow target file to be '-' meaning STDOUT |
13 | # Added ftp'quote |
14 | # |
15 | # Revision 1.16 1993/01/28 18:59:05 lmjm |
16 | # Allow socket arguemtns to come from main. |
17 | # Minor cleanups - removed old comments. |
18 | # |
19 | # Revision 1.15 1992/11/25 21:09:30 lmjm |
20 | # Added another REST return code. |
21 | # |
22 | # Revision 1.14 1992/08/12 14:33:42 lmjm |
23 | # Fail ftp'write if out of space. |
24 | # |
25 | # Revision 1.13 1992/03/20 21:01:03 lmjm |
26 | # Added in the proxy ftp code from Edwards Reed <err@cinops.xerox.com> |
27 | # Added ftp'delete from Aaron Wohl <aw0g+@andrew.cmu.edu> |
28 | # |
29 | # Revision 1.12 1992/02/06 23:25:56 lmjm |
30 | # Moved code around so can use this as a lib for both mirror and ftpmail. |
31 | # Time out opens. In case Unix doesn't bother to. |
32 | # |
33 | # Revision 1.11 1991/11/27 22:05:57 lmjm |
34 | # Match the response code number at the start of a line allowing |
35 | # for any leading junk. |
36 | # |
37 | # Revision 1.10 1991/10/23 22:42:20 lmjm |
38 | # Added better timeout code. |
39 | # Tried to optimise file transfer |
40 | # Moved open/close code to not leak file handles. |
41 | # Cleaned up the alarm code. |
42 | # Added $fatalerror to show wether the ftp link is really dead. |
43 | # |
44 | # Revision 1.9 1991/10/07 18:30:35 lmjm |
45 | # Made the timeout-read code work. |
46 | # Added restarting file gets. |
47 | # Be more verbose if ever have to call die. |
48 | # |
49 | # Revision 1.8 1991/09/17 22:53:16 lmjm |
50 | # Spot when open_data_socket fails and return a failure rather than dying. |
51 | # |
52 | # Revision 1.7 1991/09/12 22:40:25 lmjm |
53 | # Added Andrew Macpherson's patches for hosts without ip forwarding. |
54 | # |
55 | # Revision 1.6 1991/09/06 19:53:52 lmjm |
56 | # Relaid out the code the way I like it! |
57 | # Changed the debuggin to produce more "appropriate" messages |
58 | # Fixed bugs in the ordering of put and dir listing. |
59 | # Allow for hash printing when getting files (a la ftp). |
60 | # Added the new commands from Al. |
61 | # Don't print passwords in debugging. |
62 | # |
63 | # Revision 1.5 1991/08/29 16:23:49 lmjm |
64 | # Timeout reads from the remote ftp server. |
65 | # No longer call die expect on fatal errors. Just return fail codes. |
66 | # Changed returns so higher up routines can tell whats happening. |
67 | # Get expect/accept in correct order for dir listing. |
68 | # When ftp_show is set then print hashes every 1k transfered (like ftp). |
69 | # Allow for stripping returns out of incoming data. |
70 | # Save last error in a global string. |
71 | # |
72 | # Revision 1.4 1991/08/14 21:04:58 lmjm |
73 | # ftp'get now copes with ungetable files. |
74 | # ftp'expect code changed such that the string_to_print is |
75 | # ignored and the string sent back from the remote system is printed |
76 | # instead. |
77 | # Implemented patches from al. Removed spuiours tracing statements. |
78 | # |
79 | # Revision 1.3 1991/08/09 21:32:18 lmjm |
80 | # Allow for another ok code on cwd's |
81 | # Rejigger the log levels |
82 | # Send \r\n for some odd ftp daemons |
83 | # |
84 | # Revision 1.2 1991/08/09 18:07:37 lmjm |
85 | # Don't print messages unless ftp_show says to. |
86 | # |
87 | # Revision 1.1 1991/08/08 20:31:00 lmjm |
88 | # Initial revision |
89 | # |
90 | |
91 | require 'chat2.pl'; |
c2960299 |
92 | eval "require 'socket.ph'" || eval "require 'sys/socket.ph'" || die "socket.ph missing: $!\n"; |
79072805 |
93 | |
94 | |
95 | package ftp; |
96 | |
97 | if( defined( &main'PF_INET ) ){ |
98 | $pf_inet = &main'PF_INET; |
99 | $sock_stream = &main'SOCK_STREAM; |
100 | local($name, $aliases, $proto) = getprotobyname( 'tcp' ); |
101 | $tcp_proto = $proto; |
102 | } |
103 | else { |
104 | # XXX hardwired $PF_INET, $SOCK_STREAM, 'tcp' |
105 | # but who the heck would change these anyway? (:-) |
106 | $pf_inet = 2; |
107 | $sock_stream = 1; |
108 | $tcp_proto = 6; |
109 | } |
110 | |
111 | # If the remote ftp daemon doesn't respond within this time presume its dead |
112 | # or something. |
113 | $timeout = 30; |
114 | |
115 | # Timeout a read if I don't get data back within this many seconds |
116 | $timeout_read = 20 * $timeout; |
117 | |
118 | # Timeout an open |
119 | $timeout_open = $timeout; |
120 | |
121 | # This is a "global" it contains the last response from the remote ftp server |
122 | # for use in error messages |
123 | $ftp'response = ""; |
124 | # Also ftp'NS is the socket containing the data coming in from the remote ls |
125 | # command. |
126 | |
127 | # The size of block to be read or written when talking to the remote |
128 | # ftp server |
129 | $ftp'ftpbufsize = 4096; |
130 | |
131 | # How often to print a hash out, when debugging |
132 | $ftp'hashevery = 1024; |
133 | # Output a newline after this many hashes to prevent outputing very long lines |
134 | $ftp'hashnl = 70; |
135 | |
136 | # If a proxy connection then who am I really talking to? |
137 | $real_site = ""; |
138 | |
139 | # This is just a tracing aid. |
140 | $ftp_show = 0; |
141 | sub ftp'debug |
142 | { |
143 | $ftp_show = @_[0]; |
144 | # if( $ftp_show ){ |
145 | # print STDERR "ftp debugging on\n"; |
146 | # } |
147 | } |
148 | |
149 | sub ftp'set_timeout |
150 | { |
151 | $timeout = @_[0]; |
152 | $timeout_open = $timeout; |
153 | $timeout_read = 20 * $timeout; |
154 | if( $ftp_show ){ |
155 | print STDERR "ftp timeout set to $timeout\n"; |
156 | } |
157 | } |
158 | |
159 | |
160 | sub ftp'open_alarm |
161 | { |
162 | die "timeout: open"; |
163 | } |
164 | |
165 | sub ftp'timed_open |
166 | { |
167 | local( $site, $ftp_port, $retry_call, $attempts ) = @_; |
168 | local( $connect_site, $connect_port ); |
169 | local( $res ); |
170 | |
171 | alarm( $timeout_open ); |
172 | |
173 | while( $attempts-- ){ |
174 | if( $ftp_show ){ |
175 | print STDERR "proxy connecting via $proxy_gateway [$proxy_ftp_port]\n" if $proxy; |
176 | print STDERR "Connecting to $site"; |
177 | if( $ftp_port != 21 ){ |
178 | print STDERR " [port $ftp_port]"; |
179 | } |
180 | print STDERR "\n"; |
181 | } |
182 | |
183 | if( $proxy ) { |
184 | if( ! $proxy_gateway ) { |
185 | # if not otherwise set |
186 | $proxy_gateway = "internet-gateway"; |
187 | } |
188 | if( $debug ) { |
189 | print STDERR "using proxy services of $proxy_gateway, "; |
190 | print STDERR "at $proxy_ftp_port\n"; |
191 | } |
192 | $connect_site = $proxy_gateway; |
193 | $connect_port = $proxy_ftp_port; |
194 | $real_site = $site; |
195 | } |
196 | else { |
197 | $connect_site = $site; |
198 | $connect_port = $ftp_port; |
199 | } |
200 | if( ! &chat'open_port( $connect_site, $connect_port ) ){ |
201 | if( $retry_call ){ |
202 | print STDERR "Failed to connect\n" if $ftp_show; |
203 | next; |
204 | } |
205 | else { |
206 | print STDERR "proxy connection failed " if $proxy; |
207 | print STDERR "Cannot open ftp to $connect_site\n" if $ftp_show; |
208 | return 0; |
209 | } |
210 | } |
211 | $res = &ftp'expect( $timeout, |
212 | 120, "service unavailable to $site", 0, |
213 | 220, "ready for login to $site", 1, |
214 | 421, "service unavailable to $site, closing connection", 0); |
215 | if( ! $res ){ |
216 | &chat'close(); |
217 | next; |
218 | } |
219 | return 1; |
220 | } |
221 | continue { |
222 | print STDERR "Pausing between retries\n"; |
223 | sleep( $retry_pause ); |
224 | } |
225 | return 0; |
226 | } |
227 | |
228 | sub ftp'open |
229 | { |
230 | local( $site, $ftp_port, $retry_call, $attempts ) = @_; |
231 | |
232 | $SIG{ 'ALRM' } = "ftp\'open_alarm"; |
233 | |
234 | local( $ret ) = eval "&timed_open( '$site', $ftp_port, $retry_call, $attempts )"; |
235 | alarm( 0 ); |
236 | |
237 | if( $@ =~ /^timeout/ ){ |
238 | return -1; |
239 | } |
240 | return $ret; |
241 | } |
242 | |
243 | sub ftp'login |
244 | { |
245 | local( $remote_user, $remote_password ) = @_; |
246 | |
247 | if( $proxy ){ |
248 | &ftp'send( "USER $remote_user@$site" ); |
249 | } |
250 | else { |
251 | &ftp'send( "USER $remote_user" ); |
252 | } |
253 | local( $val ) = |
254 | &ftp'expect($timeout, |
255 | 230, "$remote_user logged in", 1, |
256 | 331, "send password for $remote_user", 2, |
257 | |
258 | 500, "syntax error", 0, |
259 | 501, "syntax error", 0, |
260 | 530, "not logged in", 0, |
261 | 332, "account for login not supported", 0, |
262 | |
263 | 421, "service unavailable, closing connection", 0); |
264 | if( $val == 1 ){ |
265 | return 1; |
266 | } |
267 | if( $val == 2 ){ |
268 | # A password is needed |
269 | &ftp'send( "PASS $remote_password" ); |
270 | |
271 | $val = &ftp'expect( $timeout, |
272 | 230, "$remote_user logged in", 1, |
273 | |
274 | 202, "command not implemented", 0, |
275 | 332, "account for login not supported", 0, |
276 | |
277 | 530, "not logged in", 0, |
278 | 500, "syntax error", 0, |
279 | 501, "syntax error", 0, |
280 | 503, "bad sequence of commands", 0, |
281 | |
282 | 421, "service unavailable, closing connection", 0); |
283 | if( $val == 1){ |
284 | # Logged in |
285 | return 1; |
286 | } |
287 | } |
288 | # If I got here I failed to login |
289 | return 0; |
290 | } |
291 | |
292 | sub ftp'close |
293 | { |
294 | &ftp'quit(); |
295 | &chat'close(); |
296 | } |
297 | |
298 | # Change directory |
299 | # return 1 if successful |
300 | # 0 on a failure |
301 | sub ftp'cwd |
302 | { |
303 | local( $dir ) = @_; |
304 | |
305 | &ftp'send( "CWD $dir" ); |
306 | |
307 | return &ftp'expect( $timeout, |
308 | 200, "working directory = $dir", 1, |
309 | 250, "working directory = $dir", 1, |
310 | |
311 | 500, "syntax error", 0, |
312 | 501, "syntax error", 0, |
313 | 502, "command not implemented", 0, |
314 | 530, "not logged in", 0, |
315 | 550, "cannot change directory", 0, |
316 | 421, "service unavailable, closing connection", 0 ); |
317 | } |
318 | |
319 | # Get a full directory listing: |
320 | # &ftp'dir( remote LIST options ) |
321 | # Start a list goin with the given options. |
322 | # Presuming that the remote deamon uses the ls command to generate the |
323 | # data to send back then then you can send it some extra options (eg: -lRa) |
324 | # return 1 if sucessful and 0 on a failure |
325 | sub ftp'dir_open |
326 | { |
327 | local( $options ) = @_; |
328 | local( $ret ); |
329 | |
330 | if( ! &ftp'open_data_socket() ){ |
331 | return 0; |
332 | } |
333 | |
334 | if( $options ){ |
335 | &ftp'send( "LIST $options" ); |
336 | } |
337 | else { |
338 | &ftp'send( "LIST" ); |
339 | } |
340 | |
341 | $ret = &ftp'expect( $timeout, |
342 | 150, "reading directory", 1, |
343 | |
344 | 125, "data connection already open?", 0, |
345 | |
346 | 450, "file unavailable", 0, |
347 | 500, "syntax error", 0, |
348 | 501, "syntax error", 0, |
349 | 502, "command not implemented", 0, |
350 | 530, "not logged in", 0, |
351 | |
352 | 421, "service unavailable, closing connection", 0 ); |
353 | if( ! $ret ){ |
354 | &ftp'close_data_socket; |
355 | return 0; |
356 | } |
357 | |
358 | # |
359 | # the data should be coming at us now |
360 | # |
361 | |
362 | # now accept |
363 | accept(NS,S) || die "accept failed $!"; |
364 | |
365 | return 1; |
366 | } |
367 | |
368 | |
369 | # Close down reading the result of a remote ls command |
370 | # return 1 if successful and 0 on failure |
371 | sub ftp'dir_close |
372 | { |
373 | local( $ret ); |
374 | |
375 | # read the close |
376 | # |
377 | $ret = &ftp'expect($timeout, |
378 | 226, "", 1, # transfer complete, closing connection |
379 | 250, "", 1, # action completed |
380 | |
381 | 425, "can't open data connection", 0, |
382 | 426, "connection closed, transfer aborted", 0, |
383 | 451, "action aborted, local error", 0, |
384 | 421, "service unavailable, closing connection", 0); |
385 | |
386 | # shut down our end of the socket |
387 | &ftp'close_data_socket; |
388 | |
389 | if( ! $ret ){ |
390 | return 0; |
391 | } |
392 | |
393 | return 1; |
394 | } |
395 | |
396 | # Quit from the remote ftp server |
397 | # return 1 if successful and 0 on failure |
398 | sub ftp'quit |
399 | { |
400 | $site_command_check = 0; |
401 | @site_command_list = (); |
402 | |
403 | &ftp'send("QUIT"); |
404 | |
405 | return &ftp'expect($timeout, |
406 | 221, "Goodbye", 1, # transfer complete, closing connection |
407 | |
408 | 500, "error quitting??", 0); |
409 | } |
410 | |
411 | sub ftp'read_alarm |
412 | { |
413 | die "timeout: read"; |
414 | } |
415 | |
416 | sub ftp'timed_read |
417 | { |
418 | alarm( $timeout_read ); |
419 | return sysread( NS, $buf, $ftpbufsize ); |
420 | } |
421 | |
422 | sub ftp'read |
423 | { |
424 | $SIG{ 'ALRM' } = "ftp\'read_alarm"; |
425 | |
426 | local( $ret ) = eval '&timed_read()'; |
427 | alarm( 0 ); |
428 | |
429 | if( $@ =~ /^timeout/ ){ |
430 | return -1; |
431 | } |
432 | return $ret; |
433 | } |
434 | |
435 | # Get a remote file back into a local file. |
436 | # If no loc_fname passed then uses rem_fname. |
437 | # returns 1 on success and 0 on failure |
438 | sub ftp'get |
439 | { |
440 | local($rem_fname, $loc_fname, $restart ) = @_; |
441 | |
442 | if ($loc_fname eq "") { |
443 | $loc_fname = $rem_fname; |
444 | } |
445 | |
446 | if( ! &ftp'open_data_socket() ){ |
447 | print STDERR "Cannot open data socket\n"; |
448 | return 0; |
449 | } |
450 | |
451 | if( $loc_fname ne '-' ){ |
452 | # Find the size of the target file |
453 | local( $restart_at ) = &ftp'filesize( $loc_fname ); |
454 | if( $restart && $restart_at > 0 && &ftp'restart( $restart_at ) ){ |
455 | $restart = 1; |
456 | # Make sure the file can be updated |
457 | chmod( 0644, $loc_fname ); |
458 | } |
459 | else { |
460 | $restart = 0; |
461 | unlink( $loc_fname ); |
462 | } |
463 | } |
464 | |
465 | &ftp'send( "RETR $rem_fname" ); |
466 | |
467 | local( $ret ) = |
468 | &ftp'expect($timeout, |
469 | 150, "receiving $rem_fname", 1, |
470 | |
471 | 125, "data connection already open?", 0, |
472 | |
473 | 450, "file unavailable", 2, |
474 | 550, "file unavailable", 2, |
475 | |
476 | 500, "syntax error", 0, |
477 | 501, "syntax error", 0, |
478 | 530, "not logged in", 0, |
479 | |
480 | 421, "service unavailable, closing connection", 0); |
481 | if( $ret != 1 ){ |
482 | print STDERR "Failure on RETR command\n"; |
483 | |
484 | # shut down our end of the socket |
485 | &ftp'close_data_socket; |
486 | |
487 | return 0; |
488 | } |
489 | |
490 | # |
491 | # the data should be coming at us now |
492 | # |
493 | |
494 | # now accept |
495 | accept(NS,S) || die "accept failed: $!"; |
496 | |
497 | # |
498 | # open the local fname |
499 | # concatenate on the end if restarting, else just overwrite |
500 | if( !open(FH, ($restart ? '>>' : '>') . $loc_fname) ){ |
501 | print STDERR "Cannot create local file $loc_fname\n"; |
502 | |
503 | # shut down our end of the socket |
504 | &ftp'close_data_socket; |
505 | |
506 | return 0; |
507 | } |
508 | |
509 | # while (<NS>) { |
510 | # print FH ; |
511 | # } |
512 | |
513 | local( $start_time ) = time; |
514 | local( $bytes, $lasthash, $hashes ) = (0, 0, 0); |
515 | while( ($len = &ftp'read()) > 0 ){ |
516 | $bytes += $len; |
517 | if( $strip_cr ){ |
518 | $ftp'buf =~ s/\r//g; |
519 | } |
520 | if( $ftp_show ){ |
521 | while( $bytes > ($lasthash + $ftp'hashevery) ){ |
522 | print STDERR '#'; |
523 | $lasthash += $ftp'hashevery; |
524 | $hashes++; |
525 | if( ($hashes % $ftp'hashnl) == 0 ){ |
526 | print STDERR "\n"; |
527 | } |
528 | } |
529 | } |
530 | if( ! print FH $ftp'buf ){ |
531 | print STDERR "\nfailed to write data"; |
532 | return 0; |
533 | } |
534 | } |
535 | close( FH ); |
536 | |
537 | # shut down our end of the socket |
538 | &ftp'close_data_socket; |
539 | |
540 | if( $len < 0 ){ |
541 | print STDERR "\ntimed out reading data!\n"; |
542 | |
543 | return 0; |
544 | } |
545 | |
546 | if( $ftp_show ){ |
547 | if( $hashes && ($hashes % $ftp'hashnl) != 0 ){ |
548 | print STDERR "\n"; |
549 | } |
550 | local( $secs ) = (time - $start_time); |
551 | if( $secs <= 0 ){ |
552 | $secs = 1; # To avoid a divide by zero; |
553 | } |
554 | |
555 | local( $rate ) = int( $bytes / $secs ); |
556 | print STDERR "Got $bytes bytes ($rate bytes/sec)\n"; |
557 | } |
558 | |
559 | # |
560 | # read the close |
561 | # |
562 | |
563 | $ret = &ftp'expect($timeout, |
564 | 226, "Got file", 1, # transfer complete, closing connection |
565 | 250, "Got file", 1, # action completed |
566 | |
567 | 110, "restart not supported", 0, |
568 | 425, "can't open data connection", 0, |
569 | 426, "connection closed, transfer aborted", 0, |
570 | 451, "action aborted, local error", 0, |
571 | 421, "service unavailable, closing connection", 0); |
572 | |
573 | return $ret; |
574 | } |
575 | |
576 | sub ftp'delete |
577 | { |
578 | local( $rem_fname, $val ) = @_; |
579 | |
580 | &ftp'send("DELE $rem_fname" ); |
581 | $val = &ftp'expect( $timeout, |
582 | 250,"Deleted $rem_fname", 1, |
583 | 550,"Permission denied",0 |
584 | ); |
585 | return $val == 1; |
586 | } |
587 | |
588 | sub ftp'deldir |
589 | { |
590 | local( $fname ) = @_; |
591 | |
592 | # not yet implemented |
593 | # RMD |
594 | } |
595 | |
596 | # UPDATE ME!!!!!! |
597 | # Add in the hash printing and newline conversion |
598 | sub ftp'put |
599 | { |
600 | local( $loc_fname, $rem_fname ) = @_; |
601 | local( $strip_cr ); |
602 | |
603 | if ($loc_fname eq "") { |
604 | $loc_fname = $rem_fname; |
605 | } |
606 | |
607 | if( ! &ftp'open_data_socket() ){ |
608 | return 0; |
609 | } |
610 | |
611 | &ftp'send("STOR $rem_fname"); |
612 | |
613 | # |
614 | # the data should be coming at us now |
615 | # |
616 | |
617 | local( $ret ) = |
618 | &ftp'expect($timeout, |
619 | 150, "sending $loc_fname", 1, |
620 | |
621 | 125, "data connection already open?", 0, |
622 | 450, "file unavailable", 0, |
623 | |
624 | 532, "need account for storing files", 0, |
625 | 452, "insufficient storage on system", 0, |
626 | 553, "file name not allowed", 0, |
627 | |
628 | 500, "syntax error", 0, |
629 | 501, "syntax error", 0, |
630 | 530, "not logged in", 0, |
631 | |
632 | 421, "service unavailable, closing connection", 0); |
633 | |
634 | if( $ret != 1 ){ |
635 | # shut down our end of the socket |
636 | &ftp'close_data_socket; |
637 | |
638 | return 0; |
639 | } |
640 | |
641 | |
642 | # |
643 | # the data should be coming at us now |
644 | # |
645 | |
646 | # now accept |
647 | accept(NS,S) || die "accept failed: $!"; |
648 | |
649 | # |
650 | # open the local fname |
651 | # |
652 | if( !open(FH, "<$loc_fname") ){ |
653 | print STDERR "Cannot open local file $loc_fname\n"; |
654 | |
655 | # shut down our end of the socket |
656 | &ftp'close_data_socket; |
657 | |
658 | return 0; |
659 | } |
660 | |
661 | while (<FH>) { |
662 | print NS ; |
663 | } |
664 | close(FH); |
665 | |
666 | # shut down our end of the socket to signal EOF |
667 | &ftp'close_data_socket; |
668 | |
669 | # |
670 | # read the close |
671 | # |
672 | |
673 | $ret = &ftp'expect($timeout, |
674 | 226, "file put", 1, # transfer complete, closing connection |
675 | 250, "file put", 1, # action completed |
676 | |
677 | 110, "restart not supported", 0, |
678 | 425, "can't open data connection", 0, |
679 | 426, "connection closed, transfer aborted", 0, |
680 | 451, "action aborted, local error", 0, |
681 | 551, "page type unknown", 0, |
682 | 552, "storage allocation exceeded", 0, |
683 | |
684 | 421, "service unavailable, closing connection", 0); |
685 | if( ! $ret ){ |
686 | print STDERR "error putting $loc_fname\n"; |
687 | } |
688 | return $ret; |
689 | } |
690 | |
691 | sub ftp'restart |
692 | { |
693 | local( $restart_point, $ret ) = @_; |
694 | |
695 | &ftp'send("REST $restart_point"); |
696 | |
697 | # |
698 | # see what they say |
699 | |
700 | $ret = &ftp'expect($timeout, |
701 | 350, "restarting at $restart_point", 1, |
702 | |
703 | 500, "syntax error", 0, |
704 | 501, "syntax error", 0, |
705 | 502, "REST not implemented", 2, |
706 | 530, "not logged in", 0, |
707 | 554, "REST not implemented", 2, |
708 | |
709 | 421, "service unavailable, closing connection", 0); |
710 | return $ret; |
711 | } |
712 | |
713 | # Set the file transfer type |
714 | sub ftp'type |
715 | { |
716 | local( $type ) = @_; |
717 | |
718 | &ftp'send("TYPE $type"); |
719 | |
720 | # |
721 | # see what they say |
722 | |
723 | $ret = &ftp'expect($timeout, |
724 | 200, "file type set to $type", 1, |
725 | |
726 | 500, "syntax error", 0, |
727 | 501, "syntax error", 0, |
728 | 504, "Invalid form or byte size for type $type", 0, |
729 | |
730 | 421, "service unavailable, closing connection", 0); |
731 | return $ret; |
732 | } |
733 | |
734 | $site_command_check = 0; |
735 | @site_command_list = (); |
736 | |
737 | # routine to query the remote server for 'SITE' commands supported |
738 | sub ftp'site_commands |
739 | { |
740 | local( $ret ); |
741 | |
742 | # if we havent sent a 'HELP SITE', send it now |
743 | if( !$site_command_check ){ |
744 | |
745 | $site_command_check = 1; |
746 | |
747 | &ftp'send( "HELP SITE" ); |
748 | |
749 | # assume the line in the HELP SITE response with the 'HELP' |
750 | # command is the one for us |
751 | $ret = &ftp'expect( $timeout, |
752 | ".*HELP.*", "", "\$1", |
753 | 214, "", "0", |
754 | 202, "", "0" ); |
755 | |
756 | if( $ret eq "0" ){ |
757 | print STDERR "No response from HELP SITE\n" if( $ftp_show ); |
758 | } |
759 | |
760 | @site_command_list = split(/\s+/, $ret); |
761 | } |
762 | |
763 | return @site_command_list; |
764 | } |
765 | |
766 | # return the pwd, or null if we can't get the pwd |
767 | sub ftp'pwd |
768 | { |
769 | local( $ret, $cwd ); |
770 | |
771 | &ftp'send( "PWD" ); |
772 | |
773 | # |
774 | # see what they say |
775 | |
776 | $ret = &ftp'expect( $timeout, |
777 | 257, "working dir is", 1, |
778 | 500, "syntax error", 0, |
779 | 501, "syntax error", 0, |
780 | 502, "PWD not implemented", 0, |
781 | 550, "file unavailable", 0, |
782 | |
783 | 421, "service unavailable, closing connection", 0 ); |
784 | if( $ret ){ |
785 | if( $ftp'response =~ /^257\s"(.*)"\s.*$/ ){ |
786 | $cwd = $1; |
787 | } |
788 | } |
789 | return $cwd; |
790 | } |
791 | |
792 | # return 1 for success, 0 for failure |
793 | sub ftp'mkdir |
794 | { |
795 | local( $path ) = @_; |
796 | local( $ret ); |
797 | |
798 | &ftp'send( "MKD $path" ); |
799 | |
800 | # |
801 | # see what they say |
802 | |
803 | $ret = &ftp'expect( $timeout, |
804 | 257, "made directory $path", 1, |
805 | |
806 | 500, "syntax error", 0, |
807 | 501, "syntax error", 0, |
808 | 502, "MKD not implemented", 0, |
809 | 530, "not logged in", 0, |
810 | 550, "file unavailable", 0, |
811 | |
812 | 421, "service unavailable, closing connection", 0 ); |
813 | return $ret; |
814 | } |
815 | |
816 | # return 1 for success, 0 for failure |
817 | sub ftp'chmod |
818 | { |
819 | local( $path, $mode ) = @_; |
820 | local( $ret ); |
821 | |
822 | &ftp'send( sprintf( "SITE CHMOD %o $path", $mode ) ); |
823 | |
824 | # |
825 | # see what they say |
826 | |
827 | $ret = &ftp'expect( $timeout, |
828 | 200, "chmod $mode $path succeeded", 1, |
829 | |
830 | 500, "syntax error", 0, |
831 | 501, "syntax error", 0, |
832 | 502, "CHMOD not implemented", 0, |
833 | 530, "not logged in", 0, |
834 | 550, "file unavailable", 0, |
835 | |
836 | 421, "service unavailable, closing connection", 0 ); |
837 | return $ret; |
838 | } |
839 | |
840 | # rename a file |
841 | sub ftp'rename |
842 | { |
843 | local( $old_name, $new_name ) = @_; |
844 | local( $ret ); |
845 | |
846 | &ftp'send( "RNFR $old_name" ); |
847 | |
848 | # |
849 | # see what they say |
850 | |
851 | $ret = &ftp'expect( $timeout, |
852 | 350, "", 1, |
853 | |
854 | 500, "syntax error", 0, |
855 | 501, "syntax error", 0, |
856 | 502, "RNFR not implemented", 0, |
857 | 530, "not logged in", 0, |
858 | 550, "file unavailable", 0, |
859 | 450, "file unavailable", 0, |
860 | |
861 | 421, "service unavailable, closing connection", 0); |
862 | |
863 | |
864 | # check if the "rename from" occurred ok |
865 | if( $ret ) { |
866 | &ftp'send( "RNTO $new_name" ); |
867 | |
868 | # |
869 | # see what they say |
870 | |
871 | $ret = &ftp'expect( $timeout, |
872 | 250, "rename $old_name to $new_name", 1, |
873 | |
874 | 500, "syntax error", 0, |
875 | 501, "syntax error", 0, |
876 | 502, "RNTO not implemented", 0, |
877 | 503, "bad sequence of commands", 0, |
878 | 530, "not logged in", 0, |
879 | 532, "need account for storing files", 0, |
880 | 553, "file name not allowed", 0, |
881 | |
882 | 421, "service unavailable, closing connection", 0); |
883 | } |
884 | |
885 | return $ret; |
886 | } |
887 | |
888 | |
889 | sub ftp'quote |
890 | { |
891 | local( $cmd ) = @_; |
892 | |
893 | &ftp'send( $cmd ); |
894 | |
895 | return &ftp'expect( $timeout, |
896 | 200, "Remote '$cmd' OK", 1, |
897 | 500, "error in remote '$cmd'", 0 ); |
898 | } |
899 | |
900 | # ------------------------------------------------------------------------------ |
901 | # These are the lower level support routines |
902 | |
903 | sub ftp'expectgot |
904 | { |
905 | ($ftp'response, $ftp'fatalerror) = @_; |
906 | if( $ftp_show ){ |
907 | print STDERR "$ftp'response\n"; |
908 | } |
909 | } |
910 | |
911 | # |
912 | # create the list of parameters for chat'expect |
913 | # |
914 | # ftp'expect(time_out, {value, string_to_print, return value}); |
915 | # if the string_to_print is "" then nothing is printed |
916 | # the last response is stored in $ftp'response |
917 | # |
918 | # NOTE: lmjm has changed this code such that the string_to_print is |
919 | # ignored and the string sent back from the remote system is printed |
920 | # instead. |
921 | # |
922 | sub ftp'expect { |
923 | local( $ret ); |
924 | local( $time_out ); |
925 | local( $expect_args ); |
926 | |
927 | $ftp'response = ''; |
928 | $ftp'fatalerror = 0; |
929 | |
930 | @expect_args = (); |
931 | |
932 | $time_out = shift(@_); |
933 | |
934 | while( @_ ){ |
935 | local( $code ) = shift( @_ ); |
936 | local( $pre ) = '^'; |
937 | if( $code =~ /^\d/ ){ |
938 | $pre =~ "[.|\n]*^"; |
939 | } |
940 | push( @expect_args, "$pre(" . $code . " .*)\\015\\n" ); |
941 | shift( @_ ); |
942 | push( @expect_args, |
943 | "&ftp'expectgot( \$1, 0 ); " . shift( @_ ) ); |
944 | } |
945 | |
946 | # Treat all unrecognised lines as continuations |
947 | push( @expect_args, "^(.*)\\015\\n" ); |
948 | push( @expect_args, "&ftp'expectgot( \$1, 0 ); 100" ); |
949 | |
950 | # add patterns TIMEOUT and EOF |
951 | |
952 | push( @expect_args, 'TIMEOUT' ); |
953 | push( @expect_args, "&ftp'expectgot( \"timed out\", 1 ); 0" ); |
954 | |
955 | push( @expect_args, 'EOF' ); |
956 | push( @expect_args, "&ftp'expectgot( \"remote server gone away\", 1 ); 0" ); |
957 | |
958 | if( $ftp_show > 9 ){ |
959 | &printargs( $time_out, @expect_args ); |
960 | } |
961 | |
962 | $ret = &chat'expect( $time_out, @expect_args ); |
963 | if( $ret == 100 ){ |
964 | # we saw a continuation line, wait for the end |
965 | push( @expect_args, "^.*\n" ); |
966 | push( @expect_args, "100" ); |
967 | |
968 | while( $ret == 100 ){ |
969 | $ret = &chat'expect( $time_out, @expect_args ); |
970 | } |
971 | } |
972 | |
973 | return $ret; |
974 | } |
975 | |
976 | # |
977 | # opens NS for io |
978 | # |
979 | sub ftp'open_data_socket |
980 | { |
981 | local( $ret ); |
982 | local( $hostname ); |
983 | local( $sockaddr, $name, $aliases, $proto, $port ); |
984 | local( $type, $len, $thisaddr, $myaddr, $a, $b, $c, $d ); |
985 | local( $mysockaddr, $family, $hi, $lo ); |
986 | |
987 | |
988 | $sockaddr = 'S n a4 x8'; |
989 | chop( $hostname = `hostname` ); |
990 | |
991 | $port = "ftp"; |
992 | |
993 | ($name, $aliases, $proto) = getprotobyname( 'tcp' ); |
994 | ($name, $aliases, $port) = getservbyname( $port, 'tcp' ); |
995 | |
996 | # ($name, $aliases, $type, $len, $thisaddr) = |
997 | # gethostbyname( $hostname ); |
998 | ($a,$b,$c,$d) = unpack( 'C4', $chat'thisaddr ); |
999 | |
1000 | # $this = pack( $sockaddr, &main'AF_INET, 0, $thisaddr ); |
1001 | $this = $chat'thisproc; |
1002 | |
1003 | socket(S, $pf_inet, $sock_stream, $proto ) || die "socket: $!"; |
1004 | bind(S, $this) || die "bind: $!"; |
1005 | |
1006 | # get the port number |
1007 | $mysockaddr = getsockname(S); |
1008 | ($family, $port, $myaddr) = unpack( $sockaddr, $mysockaddr ); |
1009 | |
1010 | $hi = ($port >> 8) & 0x00ff; |
1011 | $lo = $port & 0x00ff; |
1012 | |
1013 | # |
1014 | # we MUST do a listen before sending the port otherwise |
1015 | # the PORT may fail |
1016 | # |
1017 | listen( S, 5 ) || die "listen"; |
1018 | |
1019 | &ftp'send( "PORT $a,$b,$c,$d,$hi,$lo" ); |
1020 | |
1021 | return &ftp'expect($timeout, |
1022 | 200, "PORT command successful", 1, |
1023 | 250, "PORT command successful", 1 , |
1024 | |
1025 | 500, "syntax error", 0, |
1026 | 501, "syntax error", 0, |
1027 | 530, "not logged in", 0, |
1028 | |
1029 | 421, "service unavailable, closing connection", 0); |
1030 | } |
1031 | |
1032 | sub ftp'close_data_socket |
1033 | { |
1034 | close(NS); |
1035 | } |
1036 | |
1037 | sub ftp'send |
1038 | { |
1039 | local($send_cmd) = @_; |
1040 | if( $send_cmd =~ /\n/ ){ |
1041 | print STDERR "ERROR, \\n in send string for $send_cmd\n"; |
1042 | } |
1043 | |
1044 | if( $ftp_show ){ |
1045 | local( $sc ) = $send_cmd; |
1046 | |
1047 | if( $send_cmd =~ /^PASS/){ |
1048 | $sc = "PASS <somestring>"; |
1049 | } |
1050 | print STDERR "---> $sc\n"; |
1051 | } |
1052 | |
1053 | &chat'print( "$send_cmd\r\n" ); |
1054 | } |
1055 | |
1056 | sub ftp'printargs |
1057 | { |
1058 | while( @_ ){ |
1059 | print STDERR shift( @_ ) . "\n"; |
1060 | } |
1061 | } |
1062 | |
1063 | sub ftp'filesize |
1064 | { |
1065 | local( $fname ) = @_; |
1066 | |
1067 | if( ! -f $fname ){ |
1068 | return -1; |
1069 | } |
1070 | |
1071 | return (stat( _ ))[ 7 ]; |
1072 | |
1073 | } |
1074 | |
1075 | # make this package return true |
1076 | 1; |