1 |
/* |
2 |
* Hydra, an http server |
3 |
* Copyright (C) 1995 Paul Phillips <paulp@go2net.com> |
4 |
* Some changes Copyright (C) 1996,99 Larry Doolittle <ldoolitt@boa.org> |
5 |
* Some changes Copyright (C) 1996-2002 Jon Nelson <jnelson@boa.org> |
6 |
* Portions Copyright (C) 2002 Nikos Mavroyanopoulos <nmav@gnutls.org> |
7 |
* |
8 |
* This program is free software; you can redistribute it and/or modify |
9 |
* it under the terms of the GNU General Public License as published by |
10 |
* the Free Software Foundation; either version 1, or (at your option) |
11 |
* any later version. |
12 |
* |
13 |
* This program is distributed in the hope that it will be useful, |
14 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16 |
* GNU General Public License for more details. |
17 |
* |
18 |
* You should have received a copy of the GNU General Public License |
19 |
* along with this program; if not, write to the Free Software |
20 |
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
21 |
* |
22 |
*/ |
23 |
|
24 |
/* $Id: get.c,v 1.19 2002/10/01 22:38:24 nmav Exp $*/ |
25 |
|
26 |
#include "boa.h" |
27 |
#include "socket.h" |
28 |
|
29 |
/* local prototypes */ |
30 |
int get_cachedir_file(request * req, struct stat *statbuf); |
31 |
int index_directory(request * req, char *dest_filename); |
32 |
static int check_if_stuff(request * req); |
33 |
|
34 |
/* |
35 |
* Name: init_get |
36 |
* Description: Initializes a non-script GET or HEAD request. |
37 |
* |
38 |
* Return values: |
39 |
* 0: finished or error, request will be freed |
40 |
* 1: successfully initialized, added to ready queue |
41 |
*/ |
42 |
|
43 |
int init_get(server_params * params, request * req) |
44 |
{ |
45 |
int data_fd, saved_errno; |
46 |
struct stat statbuf; |
47 |
volatile int bytes; |
48 |
|
49 |
data_fd = open(req->pathname, O_RDONLY); |
50 |
saved_errno = errno; /* might not get used */ |
51 |
|
52 |
if (data_fd == -1) { |
53 |
log_error_doc(req); |
54 |
errno = saved_errno; |
55 |
perror("document open"); |
56 |
|
57 |
if (saved_errno == ENOENT) |
58 |
send_r_not_found(req); |
59 |
else if (saved_errno == EACCES) |
60 |
send_r_forbidden(req); |
61 |
else |
62 |
send_r_bad_request(req); |
63 |
return 0; |
64 |
} |
65 |
|
66 |
if (fstat(data_fd, &statbuf) == -1) { |
67 |
/* this is quite impossible, since the file |
68 |
* was opened before. |
69 |
*/ |
70 |
close(data_fd); |
71 |
send_r_not_found(req); |
72 |
return 0; |
73 |
} |
74 |
|
75 |
if (S_ISDIR(statbuf.st_mode)) { /* directory */ |
76 |
close(data_fd); /* close dir */ |
77 |
|
78 |
if (req->pathname[strlen(req->pathname) - 1] != '/') { |
79 |
char buffer[3 * MAX_PATH_LENGTH + 128]; |
80 |
|
81 |
create_url(buffer, sizeof(buffer), req->secure, req->hostname, |
82 |
params->server_s[req->secure].port, req->request_uri); |
83 |
|
84 |
send_r_moved_perm(req, buffer); |
85 |
return 0; |
86 |
} |
87 |
data_fd = get_dir(req, &statbuf); /* updates statbuf */ |
88 |
|
89 |
if (data_fd == -1) /* couldn't do it */ |
90 |
return 0; /* errors reported by get_dir */ |
91 |
else if (data_fd <= 1) |
92 |
/* data_fd == 0 -> close it down, 1 -> continue */ |
93 |
return data_fd; |
94 |
/* else, data_fd contains the fd of the file... */ |
95 |
} |
96 |
|
97 |
req->filesize = statbuf.st_size; |
98 |
req->last_modified = statbuf.st_mtime; |
99 |
|
100 |
/* Check the If-Match, If-Modified etc stuff. |
101 |
*/ |
102 |
if (req->if_types) |
103 |
if (check_if_stuff(req) == 0) { |
104 |
close(data_fd); |
105 |
return 0; |
106 |
} |
107 |
/* Move on */ |
108 |
|
109 |
if (req->range_stop == 0) |
110 |
req->range_stop = statbuf.st_size; |
111 |
|
112 |
/* out of range! */ |
113 |
if (req->range_start > statbuf.st_size || |
114 |
req->range_stop > statbuf.st_size || |
115 |
req->range_stop < req->range_start) { |
116 |
send_r_range_unsatisfiable(req); |
117 |
close(data_fd); |
118 |
return 0; |
119 |
} |
120 |
|
121 |
if (req->method == M_HEAD || req->filesize == 0) { |
122 |
send_r_request_ok(req); |
123 |
close(data_fd); |
124 |
return 0; |
125 |
} |
126 |
|
127 |
if (req->range_stop > max_file_size_cache) { |
128 |
|
129 |
if (req->range_start == 0 && req->range_stop == statbuf.st_size) |
130 |
send_r_request_ok(req); /* All's well */ |
131 |
else { |
132 |
/* if ranges were used, then lseek to the start given |
133 |
*/ |
134 |
if (lseek(data_fd, req->range_start, SEEK_SET) == (off_t) - 1) { |
135 |
close(data_fd); |
136 |
send_r_not_found(req); |
137 |
return 0; |
138 |
} |
139 |
send_r_request_partial(req); /* All's well */ |
140 |
} |
141 |
|
142 |
req->status = PIPE_READ; |
143 |
req->cgi_status = CGI_BUFFER; |
144 |
req->data_fd = data_fd; |
145 |
req_flush(req); /* this should *always* complete due to |
146 |
the size of the I/O buffers */ |
147 |
req->header_line = req->header_end = req->buffer; |
148 |
req->pipe_range_stop = req->range_stop; |
149 |
return 1; |
150 |
} |
151 |
|
152 |
if (req->range_stop == 0) { /* done */ |
153 |
send_r_request_ok(req); /* All's well *so far* */ |
154 |
close(data_fd); |
155 |
return 1; |
156 |
} |
157 |
|
158 |
/* NOTE: I (Jon Nelson) tried performing a read(2) |
159 |
* into the output buffer provided the file data would |
160 |
* fit, before mmapping, and if successful, writing that |
161 |
* and stopping there -- all to avoid the cost |
162 |
* of a mmap. Oddly, it was *slower* in benchmarks. |
163 |
*/ |
164 |
if (max_files_cache > 0) { |
165 |
req->mmap_entry_var = find_mmap(data_fd, &statbuf); |
166 |
if (req->mmap_entry_var == NULL) { |
167 |
req->buffer_end = 0; |
168 |
if (errno == ENOENT) |
169 |
send_r_not_found(req); |
170 |
else if (errno == EACCES) |
171 |
send_r_forbidden(req); |
172 |
else |
173 |
send_r_bad_request(req); |
174 |
close(data_fd); |
175 |
return 0; |
176 |
} |
177 |
req->data_mem = req->mmap_entry_var->mmap; |
178 |
} else { /* File caching is disabled. |
179 |
*/ |
180 |
req->data_mem = |
181 |
mmap(0, req->range_stop, PROT_READ, MAP_OPTIONS, data_fd, 0); |
182 |
} |
183 |
|
184 |
close(data_fd); /* close data file */ |
185 |
|
186 |
if (req->data_mem == MAP_FAILED) { |
187 |
boa_perror(req, "mmap"); |
188 |
return 0; |
189 |
} |
190 |
|
191 |
if (req->range_start == 0 && req->range_stop == statbuf.st_size) |
192 |
send_r_request_ok(req); /* All's well */ |
193 |
else |
194 |
send_r_request_partial(req); /* All's well */ |
195 |
|
196 |
bytes = BUFFER_SIZE - req->buffer_end; |
197 |
|
198 |
/* bytes is now how much the buffer can hold |
199 |
* after the headers |
200 |
*/ |
201 |
req->filepos = req->range_start; |
202 |
|
203 |
if (bytes > 0) { |
204 |
if (bytes > req->range_stop - req->range_start) |
205 |
bytes = req->range_stop - req->range_start; |
206 |
|
207 |
if (setjmp(params->env) == 0) { |
208 |
params->handle_sigbus = 1; |
209 |
memcpy(req->buffer + req->buffer_end, |
210 |
&req->data_mem[req->filepos], bytes); |
211 |
params->handle_sigbus = 0; |
212 |
/* OK, SIGBUS **after** this point is very bad! */ |
213 |
} else { |
214 |
char buf[30]; |
215 |
/* sigbus! */ |
216 |
log_error_doc(req); |
217 |
reset_output_buffer(req); |
218 |
send_r_error(req); |
219 |
get_commonlog_time(buf); |
220 |
fprintf(stderr, "%sGot SIGBUS in memcpy!\n", buf); |
221 |
return 0; |
222 |
} |
223 |
req->buffer_end += bytes; |
224 |
req->filepos += bytes; |
225 |
if (req->range_stop == req->filepos) { |
226 |
req_flush(req); |
227 |
req->status = DONE; |
228 |
} |
229 |
} |
230 |
|
231 |
/* We lose statbuf here, so make sure response has been sent */ |
232 |
return 1; |
233 |
} |
234 |
|
235 |
/* Breaks a list of "xxx", "yyy", to a character array, of |
236 |
* MAX_ETAGS size; Note that the given string is modified. |
237 |
*/ |
238 |
#define MAX_COMMA_SEP_ELEMENTS 6 |
239 |
inline |
240 |
static void break_comma_list(char *etag, |
241 |
char *broken_etag[MAX_COMMA_SEP_ELEMENTS], |
242 |
int *elements) |
243 |
{ |
244 |
char *p = etag; |
245 |
|
246 |
*elements = 0; |
247 |
|
248 |
do { |
249 |
broken_etag[*elements] = p; |
250 |
|
251 |
(*elements)++; |
252 |
|
253 |
p = strchr(p, ','); |
254 |
if (p) { |
255 |
*p = 0; |
256 |
p++; /* move to next entry and skip white |
257 |
* space. |
258 |
*/ |
259 |
while (*p == ' ') |
260 |
p++; |
261 |
} |
262 |
} while (p != NULL && *elements < MAX_COMMA_SEP_ELEMENTS); |
263 |
} |
264 |
|
265 |
/* |
266 |
* Name: check_if_stuff |
267 |
* Description: Checks the If-Match, If-None-Match headers |
268 |
* |
269 |
* req->last_modified, and req->filesize MUST have been set |
270 |
* before calling this function. This function should be called |
271 |
* if req->if_types != 0. |
272 |
* |
273 |
* Return values: |
274 |
* 1: Successful, continue sending the file |
275 |
* 0: unsuccessful. We send the appropriate stuff. Close the connection. |
276 |
*/ |
277 |
|
278 |
static int check_if_stuff(request * req) |
279 |
{ |
280 |
int comp = 0; |
281 |
char *broken_etag[MAX_COMMA_SEP_ELEMENTS]; |
282 |
int broken_etag_size, i; |
283 |
char new_etag[MAX_ETAG_LENGTH]; |
284 |
|
285 |
/* Although we allow multiple If-* directives to be used, we |
286 |
* actually use only one. The priority used is shown below. |
287 |
*/ |
288 |
|
289 |
/* First try IF_MODIFIED_SINCE |
290 |
*/ |
291 |
if (req->if_types & IF_MODIFIED_SINCE) { |
292 |
if (!modified_since(req->last_modified, req->if_modified_since)) { |
293 |
send_r_not_modified(req); |
294 |
return 0; |
295 |
} |
296 |
return 1; |
297 |
} |
298 |
|
299 |
|
300 |
/* Then try IF_MATCH |
301 |
*/ |
302 |
if (req->if_types & IF_MATCH) { |
303 |
|
304 |
/* Check for the "*" |
305 |
*/ |
306 |
if (strncmp(req->if_match_etag, "\"*\"", 3) == 0) { |
307 |
comp = 0; /* comparison is always ok */ |
308 |
} else { |
309 |
|
310 |
/* Create the current ETag of the file. |
311 |
*/ |
312 |
create_etag(req->filesize, req->last_modified, new_etag); |
313 |
|
314 |
/* Check if one of the ETags sent, match ours |
315 |
*/ |
316 |
break_comma_list(req->if_match_etag, broken_etag, |
317 |
&broken_etag_size); |
318 |
|
319 |
comp = 1; |
320 |
for (i = 0; i < broken_etag_size; i++) { |
321 |
comp = strcmp(broken_etag[i], new_etag); |
322 |
if (comp == 0) /* matches! */ |
323 |
break; |
324 |
} |
325 |
|
326 |
|
327 |
} |
328 |
|
329 |
if (comp == 0) |
330 |
return 1; |
331 |
send_r_precondition_failed(req); |
332 |
return 0; |
333 |
} |
334 |
|
335 |
/* Then try IF_RANGE |
336 |
*/ |
337 |
if (req->if_types & IF_RANGE) { |
338 |
if (req->if_range_etag[0] == '"') { /* ETag may contain a date, if If-Range |
339 |
* was used. |
340 |
*/ |
341 |
/* Check for the "*" |
342 |
*/ |
343 |
if (strncmp(req->if_range_etag, "\"*\"", 3) == 0) { |
344 |
comp = 0; /* comparison is always ok */ |
345 |
} else { |
346 |
|
347 |
/* Create the current ETag |
348 |
*/ |
349 |
create_etag(req->filesize, req->last_modified, new_etag); |
350 |
|
351 |
/* Check if one of the ETags sent, match ours |
352 |
*/ |
353 |
|
354 |
break_comma_list(req->if_range_etag, broken_etag, |
355 |
&broken_etag_size); |
356 |
|
357 |
comp = 1; |
358 |
for (i = 0; i < broken_etag_size; i++) { |
359 |
comp = strcmp(broken_etag[i], new_etag); |
360 |
if (comp == 0) /* matches! */ |
361 |
break; |
362 |
} |
363 |
|
364 |
|
365 |
} |
366 |
} else { |
367 |
comp = modified_since(req->last_modified, req->if_range_etag); |
368 |
} |
369 |
|
370 |
|
371 |
/* File didn't change */ |
372 |
if (comp == 0) |
373 |
return 1; |
374 |
|
375 |
/* File has been changed, but it is Ok, so send the whole |
376 |
* file. |
377 |
*/ |
378 |
req->range_start = req->range_stop = 0; |
379 |
return 1; |
380 |
} |
381 |
|
382 |
/* Then try IF_NONE_MATCH |
383 |
*/ |
384 |
if (req->if_types & IF_NONE_MATCH) { |
385 |
/* Check for the "*" |
386 |
*/ |
387 |
if (strncmp(req->if_none_match_etag, "\"*\"", 3) == 0) { |
388 |
comp = 0; /* comparison is always ok */ |
389 |
} else { |
390 |
|
391 |
/* Create the current ETag |
392 |
*/ |
393 |
create_etag(req->filesize, req->last_modified, new_etag); |
394 |
|
395 |
/* Check if one of the ETags sent, match ours |
396 |
*/ |
397 |
|
398 |
break_comma_list(req->if_none_match_etag, broken_etag, |
399 |
&broken_etag_size); |
400 |
|
401 |
comp = 1; |
402 |
for (i = 0; i < broken_etag_size; i++) { |
403 |
comp = strcmp(broken_etag[i], new_etag); |
404 |
if (comp == 0) /* matches! */ |
405 |
break; |
406 |
} |
407 |
|
408 |
|
409 |
} |
410 |
|
411 |
if (comp == 0) { |
412 |
send_r_not_modified(req); |
413 |
return 0; |
414 |
} else { /* it was modified */ |
415 |
send_r_precondition_failed(req); |
416 |
return 0; |
417 |
} |
418 |
} |
419 |
|
420 |
/* Unsupported type ? */ |
421 |
|
422 |
return 1; /* do the request */ |
423 |
} |
424 |
|
425 |
/* |
426 |
* Name: process_get |
427 |
* Description: Writes a chunk of data to the socket. |
428 |
* |
429 |
* Return values: |
430 |
* -1: request blocked, move to blocked queue |
431 |
* 0: EOF or error, close it down |
432 |
* 1: successful write, recycle in ready queue |
433 |
*/ |
434 |
|
435 |
int process_get(server_params * params, request * req) |
436 |
{ |
437 |
int bytes_written; |
438 |
volatile int bytes_to_write; |
439 |
|
440 |
bytes_to_write = req->range_stop - req->filepos; |
441 |
if (bytes_to_write > SOCKETBUF_SIZE) |
442 |
bytes_to_write = SOCKETBUF_SIZE; |
443 |
|
444 |
|
445 |
if (setjmp(params->env) == 0) { |
446 |
params->handle_sigbus = 1; |
447 |
|
448 |
bytes_written = |
449 |
socket_send(req, req->data_mem + req->filepos, bytes_to_write); |
450 |
|
451 |
params->handle_sigbus = 0; |
452 |
/* OK, SIGBUS **after** this point is very bad! */ |
453 |
} else { |
454 |
char buf[30]; |
455 |
/* sigbus! */ |
456 |
log_error_doc(req); |
457 |
/* sending an error here is inappropriate |
458 |
* if we are here, the file is mmapped, and thus, |
459 |
* a content-length has been sent. If we send fewer bytes |
460 |
* the client knows there has been a problem. |
461 |
* We run the risk of accidentally sending the right number |
462 |
* of bytes (or a few too many) and the client |
463 |
* won't be the wiser. |
464 |
*/ |
465 |
req->status = DEAD; |
466 |
get_commonlog_time(buf); |
467 |
fprintf(stderr, "%sGot SIGBUS in write(2)!\n", buf); |
468 |
return 0; |
469 |
} |
470 |
|
471 |
if (bytes_written < 0) { |
472 |
if (errno == EWOULDBLOCK || errno == EAGAIN) |
473 |
return -1; |
474 |
/* request blocked at the pipe level, but keep going */ |
475 |
else { |
476 |
if (errno != EPIPE) { |
477 |
log_error_doc(req); |
478 |
/* Can generate lots of log entries, */ |
479 |
perror("write"); |
480 |
/* OK to disable if your logs get too big */ |
481 |
} |
482 |
req->status = DEAD; |
483 |
return 0; |
484 |
} |
485 |
} |
486 |
req->filepos += bytes_written; |
487 |
|
488 |
if (req->filepos == req->range_stop) { /* EOF */ |
489 |
return 0; |
490 |
} else |
491 |
return 1; /* more to do */ |
492 |
} |
493 |
|
494 |
/* |
495 |
* Name: get_dir |
496 |
* Description: Called from process_get if the request is a directory. |
497 |
* statbuf must describe directory on input, since we may need its |
498 |
* device, inode, and mtime. |
499 |
* statbuf is updated, since we may need to check mtimes of a cache. |
500 |
* returns: |
501 |
* -1 error |
502 |
* 0 cgi (either gunzip or auto-generated) |
503 |
* >0 file descriptor of file |
504 |
*/ |
505 |
|
506 |
int get_dir(request * req, struct stat *statbuf) |
507 |
{ |
508 |
|
509 |
char *directory_index; |
510 |
int data_fd; |
511 |
|
512 |
directory_index = |
513 |
find_and_open_directory_index(req->pathname, 0, &data_fd); |
514 |
|
515 |
if (directory_index) { /* look for index.html first?? */ |
516 |
if (data_fd != -1) { /* user's index file */ |
517 |
int ret; |
518 |
|
519 |
/* Check if we can execute the file |
520 |
*/ |
521 |
|
522 |
strcat(req->request_uri, directory_index); |
523 |
|
524 |
ret = is_executable_cgi(req, directory_index); |
525 |
if (ret != 0) { /* it is a CGI */ |
526 |
close(data_fd); /* we don't need it */ |
527 |
if (ret == -1) { |
528 |
send_r_not_found(req); |
529 |
return -1; |
530 |
} |
531 |
return init_cgi(req); |
532 |
} |
533 |
|
534 |
/* Not a cgi */ |
535 |
|
536 |
fstat(data_fd, statbuf); |
537 |
return data_fd; |
538 |
} |
539 |
if (errno == EACCES) { |
540 |
send_r_forbidden(req); |
541 |
return -1; |
542 |
} else if (errno != ENOENT) { |
543 |
/* if there is an error *other* than EACCES or ENOENT */ |
544 |
send_r_not_found(req); |
545 |
return -1; |
546 |
} |
547 |
} |
548 |
|
549 |
/* only here if index.html, index.html.gz don't exist */ |
550 |
if (dirmaker != NULL) { /* don't look for index.html... maybe automake? */ |
551 |
req->response_status = R_REQUEST_OK; |
552 |
SQUASH_KA(req); |
553 |
|
554 |
/* the indexer should take care of all headers */ |
555 |
if (!req->simple) { |
556 |
req_write(req, HTTP_VERSION " 200 OK\r\n"); |
557 |
print_http_headers(req); |
558 |
print_last_modified(req); |
559 |
req_write(req, "Content-Type: " TEXT_HTML CRLF CRLF); |
560 |
req_flush(req); |
561 |
} |
562 |
if (req->method == M_HEAD) |
563 |
return 0; |
564 |
|
565 |
req->is_cgi = INDEXER_CGI; |
566 |
return init_cgi(req); |
567 |
/* in this case, 0 means success */ |
568 |
} else if (cachedir) { |
569 |
return get_cachedir_file(req, statbuf); |
570 |
} else { /* neither index.html nor autogenerate are allowed */ |
571 |
send_r_forbidden(req); |
572 |
return -1; /* nothing worked */ |
573 |
} |
574 |
} |
575 |
|
576 |
int get_cachedir_file(request * req, struct stat *statbuf) |
577 |
{ |
578 |
|
579 |
char pathname_with_index[MAX_PATH_LENGTH]; |
580 |
int data_fd; |
581 |
time_t real_dir_mtime; |
582 |
|
583 |
real_dir_mtime = statbuf->st_mtime; |
584 |
sprintf(pathname_with_index, "%s/dir.%d.%ld", |
585 |
cachedir, (int) statbuf->st_dev, statbuf->st_ino); |
586 |
data_fd = open(pathname_with_index, O_RDONLY); |
587 |
|
588 |
if (data_fd != -1) { /* index cache */ |
589 |
|
590 |
fstat(data_fd, statbuf); |
591 |
if (statbuf->st_mtime > real_dir_mtime) { |
592 |
statbuf->st_mtime = real_dir_mtime; /* lie */ |
593 |
strcpy(req->request_uri, find_default_directory_index()); /* for mimetype */ |
594 |
return data_fd; |
595 |
} |
596 |
close(data_fd); |
597 |
unlink(pathname_with_index); /* cache is stale, delete it */ |
598 |
} |
599 |
if (index_directory(req, pathname_with_index) == -1) |
600 |
return -1; |
601 |
|
602 |
data_fd = open(pathname_with_index, O_RDONLY); /* Last chance */ |
603 |
if (data_fd != -1) { |
604 |
strcpy(req->request_uri, find_default_directory_index()); /* for mimetype */ |
605 |
fstat(data_fd, statbuf); |
606 |
statbuf->st_mtime = real_dir_mtime; /* lie */ |
607 |
return data_fd; |
608 |
} |
609 |
|
610 |
boa_perror(req, "re-opening dircache"); |
611 |
return -1; /* Nothing worked. */ |
612 |
|
613 |
} |
614 |
|
615 |
/* |
616 |
* Name: index_directory |
617 |
* Description: Called from get_cachedir_file if a directory html |
618 |
* has to be generated on the fly |
619 |
* returns -1 for problem, else 0 |
620 |
* This version is the fastest, ugliest, and most accurate yet. |
621 |
* It solves the "stale size or type" problem by not ever giving |
622 |
* the size or type. This also speeds it up since no per-file |
623 |
* stat() is required. |
624 |
*/ |
625 |
|
626 |
int index_directory(request * req, char *dest_filename) |
627 |
{ |
628 |
DIR *request_dir; |
629 |
FILE *fdstream; |
630 |
struct dirent *dirbuf; |
631 |
int bytes = 0; |
632 |
char *escname = NULL; |
633 |
|
634 |
if (chdir(req->pathname) == -1) { |
635 |
if (errno == EACCES || errno == EPERM) { |
636 |
send_r_forbidden(req); |
637 |
} else { |
638 |
log_error_doc(req); |
639 |
perror("chdir"); |
640 |
send_r_bad_request(req); |
641 |
} |
642 |
return -1; |
643 |
} |
644 |
|
645 |
request_dir = opendir("."); |
646 |
if (request_dir == NULL) { |
647 |
int errno_save = errno; |
648 |
send_r_error(req); |
649 |
log_error_time(); |
650 |
fprintf(stderr, "directory \"%s\": ", req->pathname); |
651 |
errno = errno_save; |
652 |
perror("opendir"); |
653 |
return -1; |
654 |
} |
655 |
|
656 |
fdstream = fopen(dest_filename, "w"); |
657 |
if (fdstream == NULL) { |
658 |
boa_perror(req, "dircache fopen"); |
659 |
closedir(request_dir); |
660 |
return -1; |
661 |
} |
662 |
|
663 |
bytes += fprintf(fdstream, |
664 |
"<HTML><HEAD>\n<TITLE>Index of %s</TITLE>\n</HEAD>\n\n", |
665 |
req->request_uri); |
666 |
bytes += |
667 |
fprintf(fdstream, "<BODY>\n\n<H2>Index of %s</H2>\n\n<PRE>\n", |
668 |
req->request_uri); |
669 |
|
670 |
while ((dirbuf = readdir(request_dir))) { |
671 |
if (!strcmp(dirbuf->d_name, ".")) |
672 |
continue; |
673 |
|
674 |
if (!strcmp(dirbuf->d_name, "..")) { |
675 |
bytes += fprintf(fdstream, |
676 |
" [DIR] <A HREF=\"../\">Parent Directory</A>\n"); |
677 |
continue; |
678 |
} |
679 |
|
680 |
if ((escname = escape_string(dirbuf->d_name, NULL)) != NULL) { |
681 |
bytes += fprintf(fdstream, " <A HREF=\"%s\">%s</A>\n", |
682 |
escname, dirbuf->d_name); |
683 |
free(escname); |
684 |
escname = NULL; |
685 |
} |
686 |
} |
687 |
closedir(request_dir); |
688 |
bytes += fprintf(fdstream, "</PRE>\n\n</BODY>\n</HTML>\n"); |
689 |
|
690 |
fclose(fdstream); |
691 |
|
692 |
chdir(server_root); |
693 |
|
694 |
req->filesize = bytes; /* for logging transfer size */ |
695 |
return 0; /* success */ |
696 |
} |