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drain backend socket/pipe bufs upon FDEVENT_HUP
[lighttpd.git] / src / mod_webdav.c
blob1b51a71fa40cb209a4756a336ff755c771377230
1 #include "first.h"
2
3 #include "base.h"
4 #include "log.h"
5 #include "buffer.h"
6 #include "response.h"
7 #include "connections.h"
8
9 #include "plugin.h"
10
11 #include "stream.h"
12 #include "stat_cache.h"
13
14 #include "sys-mmap.h"
15
16 #include <sys/types.h>
17 #include <sys/stat.h>
18 #include <ctype.h>
19 #include <stdlib.h>
20 #include <string.h>
21 #include <errno.h>
22 #include <fcntl.h>
23 #include <stdio.h>
24 #include <assert.h>
25
26 #include <unistd.h>
27 #include <dirent.h>
28
29 #if defined(HAVE_LIBXML_H) && defined(HAVE_SQLITE3_H)
30 #define USE_PROPPATCH
31 #include <libxml/tree.h>
32 #include <libxml/parser.h>
33
34 #include <sqlite3.h>
35 #endif
36
37 #if defined(HAVE_LIBXML_H) && defined(HAVE_SQLITE3_H) && defined(HAVE_UUID_UUID_H)
38 #define USE_LOCKS
39 #include <uuid/uuid.h>
40 #endif
41
42 /**
43 * this is a webdav for a lighttpd plugin
44 *
45 * at least a very basic one.
46 * - for now it is read-only and we only support PROPFIND
47 *
48 */
49
50 #define WEBDAV_FILE_MODE S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH
51 #define WEBDAV_DIR_MODE S_IRWXU | S_IRWXG | S_IRWXO
52
53 /* plugin config for all request/connections */
54
55 typedef struct {
56 unsigned short enabled;
57 unsigned short is_readonly;
58 unsigned short log_xml;
59
60 buffer *sqlite_db_name;
61 #ifdef USE_PROPPATCH
62 sqlite3 *sql;
63 sqlite3_stmt *stmt_update_prop;
64 sqlite3_stmt *stmt_delete_prop;
65 sqlite3_stmt *stmt_select_prop;
66 sqlite3_stmt *stmt_select_propnames;
67
68 sqlite3_stmt *stmt_delete_uri;
69 sqlite3_stmt *stmt_move_uri;
70 sqlite3_stmt *stmt_copy_uri;
71
72 sqlite3_stmt *stmt_remove_lock;
73 sqlite3_stmt *stmt_create_lock;
74 sqlite3_stmt *stmt_read_lock;
75 sqlite3_stmt *stmt_read_lock_by_uri;
76 sqlite3_stmt *stmt_refresh_lock;
77 #endif
78 } plugin_config;
79
80 typedef struct {
81 PLUGIN_DATA;
82
83 buffer *tmp_buf;
84 request_uri uri;
85 physical physical;
86
87 plugin_config **config_storage;
88
89 plugin_config conf;
90 } plugin_data;
91
92 /* init the plugin data */
93 INIT_FUNC(mod_webdav_init) {
94 plugin_data *p;
95
96 p = calloc(1, sizeof(*p));
97
98 p->tmp_buf = buffer_init();
99
100 p->uri.scheme = buffer_init();
101 p->uri.path_raw = buffer_init();
102 p->uri.path = buffer_init();
103 p->uri.authority = buffer_init();
104
105 p->physical.path = buffer_init();
106 p->physical.rel_path = buffer_init();
107 p->physical.doc_root = buffer_init();
108 p->physical.basedir = buffer_init();
109
110 return p;
111 }
112
113 /* detroy the plugin data */
114 FREE_FUNC(mod_webdav_free) {
115 plugin_data *p = p_d;
116
117 UNUSED(srv);
118
119 if (!p) return HANDLER_GO_ON;
120
121 if (p->config_storage) {
122 size_t i;
123 for (i = 0; i < srv->config_context->used; i++) {
124 plugin_config *s = p->config_storage[i];
125
126 if (NULL == s) continue;
127
128 buffer_free(s->sqlite_db_name);
129 #ifdef USE_PROPPATCH
130 if (s->sql) {
131 sqlite3_finalize(s->stmt_delete_prop);
132 sqlite3_finalize(s->stmt_delete_uri);
133 sqlite3_finalize(s->stmt_copy_uri);
134 sqlite3_finalize(s->stmt_move_uri);
135 sqlite3_finalize(s->stmt_update_prop);
136 sqlite3_finalize(s->stmt_select_prop);
137 sqlite3_finalize(s->stmt_select_propnames);
138
139 sqlite3_finalize(s->stmt_read_lock);
140 sqlite3_finalize(s->stmt_read_lock_by_uri);
141 sqlite3_finalize(s->stmt_create_lock);
142 sqlite3_finalize(s->stmt_remove_lock);
143 sqlite3_finalize(s->stmt_refresh_lock);
144 sqlite3_close(s->sql);
145 }
146 #endif
147 free(s);
148 }
149 free(p->config_storage);
150 }
151
152 buffer_free(p->uri.scheme);
153 buffer_free(p->uri.path_raw);
154 buffer_free(p->uri.path);
155 buffer_free(p->uri.authority);
156
157 buffer_free(p->physical.path);
158 buffer_free(p->physical.rel_path);
159 buffer_free(p->physical.doc_root);
160 buffer_free(p->physical.basedir);
161
162 buffer_free(p->tmp_buf);
163
164 free(p);
165
166 return HANDLER_GO_ON;
167 }
168
169 /* handle plugin config and check values */
170
171 SETDEFAULTS_FUNC(mod_webdav_set_defaults) {
172 plugin_data *p = p_d;
173 size_t i = 0;
174
175 config_values_t cv[] = {
176 { "webdav.activate", NULL, T_CONFIG_BOOLEAN, T_CONFIG_SCOPE_CONNECTION }, /* 0 */
177 { "webdav.is-readonly", NULL, T_CONFIG_BOOLEAN, T_CONFIG_SCOPE_CONNECTION }, /* 1 */
178 { "webdav.sqlite-db-name", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION }, /* 2 */
179 { "webdav.log-xml", NULL, T_CONFIG_BOOLEAN, T_CONFIG_SCOPE_CONNECTION }, /* 3 */
180 { NULL, NULL, T_CONFIG_UNSET, T_CONFIG_SCOPE_UNSET }
181 };
182
183 if (!p) return HANDLER_ERROR;
184
185 p->config_storage = calloc(1, srv->config_context->used * sizeof(plugin_config *));
186
187 for (i = 0; i < srv->config_context->used; i++) {
188 data_config const* config = (data_config const*)srv->config_context->data[i];
189 plugin_config *s;
190
191 s = calloc(1, sizeof(plugin_config));
192 s->sqlite_db_name = buffer_init();
193
194 cv[0].destination = &(s->enabled);
195 cv[1].destination = &(s->is_readonly);
196 cv[2].destination = s->sqlite_db_name;
197 cv[3].destination = &(s->log_xml);
198
199 p->config_storage[i] = s;
200
201 if (0 != config_insert_values_global(srv, config->value, cv, i == 0 ? T_CONFIG_SCOPE_SERVER : T_CONFIG_SCOPE_CONNECTION)) {
202 return HANDLER_ERROR;
203 }
204
205 if (!buffer_string_is_empty(s->sqlite_db_name)) {
206 #ifdef USE_PROPPATCH
207 const char *next_stmt;
208 char *err;
209
210 if (SQLITE_OK != sqlite3_open(s->sqlite_db_name->ptr, &(s->sql))) {
211 log_error_write(srv, __FILE__, __LINE__, "sbs", "sqlite3_open failed for",
212 s->sqlite_db_name,
213 sqlite3_errmsg(s->sql));
214 return HANDLER_ERROR;
215 }
216
217 if (SQLITE_OK != sqlite3_exec(s->sql,
218 "CREATE TABLE IF NOT EXISTS properties ("
219 " resource TEXT NOT NULL,"
220 " prop TEXT NOT NULL,"
221 " ns TEXT NOT NULL,"
222 " value TEXT NOT NULL,"
223 " PRIMARY KEY(resource, prop, ns))",
224 NULL, NULL, &err)) {
225
226 if (0 != strcmp(err, "table properties already exists")) {
227 log_error_write(srv, __FILE__, __LINE__, "ss", "can't open transaction:", err);
228 sqlite3_free(err);
229
230 return HANDLER_ERROR;
231 }
232 sqlite3_free(err);
233 }
234
235 if (SQLITE_OK != sqlite3_exec(s->sql,
236 "CREATE TABLE IF NOT EXISTS locks ("
237 " locktoken TEXT NOT NULL,"
238 " resource TEXT NOT NULL,"
239 " lockscope TEXT NOT NULL,"
240 " locktype TEXT NOT NULL,"
241 " owner TEXT NOT NULL,"
242 " depth INT NOT NULL,"
243 " timeout TIMESTAMP NOT NULL,"
244 " PRIMARY KEY(locktoken))",
245 NULL, NULL, &err)) {
246
247 if (0 != strcmp(err, "table locks already exists")) {
248 log_error_write(srv, __FILE__, __LINE__, "ss", "can't open transaction:", err);
249 sqlite3_free(err);
250
251 return HANDLER_ERROR;
252 }
253 sqlite3_free(err);
254 }
255
256 if (SQLITE_OK != sqlite3_prepare(s->sql,
257 CONST_STR_LEN("SELECT value FROM properties WHERE resource = ? AND prop = ? AND ns = ?"),
258 &(s->stmt_select_prop), &next_stmt)) {
259 /* prepare failed */
260
261 log_error_write(srv, __FILE__, __LINE__, "ss", "sqlite3_prepare failed:", sqlite3_errmsg(s->sql));
262 return HANDLER_ERROR;
263 }
264
265 if (SQLITE_OK != sqlite3_prepare(s->sql,
266 CONST_STR_LEN("SELECT ns, prop FROM properties WHERE resource = ?"),
267 &(s->stmt_select_propnames), &next_stmt)) {
268 /* prepare failed */
269
270 log_error_write(srv, __FILE__, __LINE__, "ss", "sqlite3_prepare failed:", sqlite3_errmsg(s->sql));
271 return HANDLER_ERROR;
272 }
273
274
275 if (SQLITE_OK != sqlite3_prepare(s->sql,
276 CONST_STR_LEN("REPLACE INTO properties (resource, prop, ns, value) VALUES (?, ?, ?, ?)"),
277 &(s->stmt_update_prop), &next_stmt)) {
278 /* prepare failed */
279
280 log_error_write(srv, __FILE__, __LINE__, "ss", "sqlite3_prepare failed:", sqlite3_errmsg(s->sql));
281 return HANDLER_ERROR;
282 }
283
284 if (SQLITE_OK != sqlite3_prepare(s->sql,
285 CONST_STR_LEN("DELETE FROM properties WHERE resource = ? AND prop = ? AND ns = ?"),
286 &(s->stmt_delete_prop), &next_stmt)) {
287 /* prepare failed */
288 log_error_write(srv, __FILE__, __LINE__, "ss", "sqlite3_prepare failed", sqlite3_errmsg(s->sql));
289
290 return HANDLER_ERROR;
291 }
292
293 if (SQLITE_OK != sqlite3_prepare(s->sql,
294 CONST_STR_LEN("DELETE FROM properties WHERE resource = ?"),
295 &(s->stmt_delete_uri), &next_stmt)) {
296 /* prepare failed */
297 log_error_write(srv, __FILE__, __LINE__, "ss", "sqlite3_prepare failed", sqlite3_errmsg(s->sql));
298
299 return HANDLER_ERROR;
300 }
301
302 if (SQLITE_OK != sqlite3_prepare(s->sql,
303 CONST_STR_LEN("INSERT INTO properties SELECT ?, prop, ns, value FROM properties WHERE resource = ?"),
304 &(s->stmt_copy_uri), &next_stmt)) {
305 /* prepare failed */
306 log_error_write(srv, __FILE__, __LINE__, "ss", "sqlite3_prepare failed", sqlite3_errmsg(s->sql));
307
308 return HANDLER_ERROR;
309 }
310
311 if (SQLITE_OK != sqlite3_prepare(s->sql,
312 CONST_STR_LEN("UPDATE OR REPLACE properties SET resource = ? WHERE resource = ?"),
313 &(s->stmt_move_uri), &next_stmt)) {
314 /* prepare failed */
315 log_error_write(srv, __FILE__, __LINE__, "ss", "sqlite3_prepare failed", sqlite3_errmsg(s->sql));
316
317 return HANDLER_ERROR;
318 }
319
320 /* LOCKS */
321
322 if (SQLITE_OK != sqlite3_prepare(s->sql,
323 CONST_STR_LEN("INSERT INTO locks (locktoken, resource, lockscope, locktype, owner, depth, timeout) VALUES (?,?,?,?,?,?, CURRENT_TIME + 600)"),
324 &(s->stmt_create_lock), &next_stmt)) {
325 /* prepare failed */
326 log_error_write(srv, __FILE__, __LINE__, "ss", "sqlite3_prepare failed", sqlite3_errmsg(s->sql));
327
328 return HANDLER_ERROR;
329 }
330
331 if (SQLITE_OK != sqlite3_prepare(s->sql,
332 CONST_STR_LEN("DELETE FROM locks WHERE locktoken = ?"),
333 &(s->stmt_remove_lock), &next_stmt)) {
334 /* prepare failed */
335 log_error_write(srv, __FILE__, __LINE__, "ss", "sqlite3_prepare failed", sqlite3_errmsg(s->sql));
336
337 return HANDLER_ERROR;
338 }
339
340 if (SQLITE_OK != sqlite3_prepare(s->sql,
341 CONST_STR_LEN("SELECT locktoken, resource, lockscope, locktype, owner, depth, timeout-CURRENT_TIME FROM locks WHERE locktoken = ?"),
342 &(s->stmt_read_lock), &next_stmt)) {
343 /* prepare failed */
344 log_error_write(srv, __FILE__, __LINE__, "ss", "sqlite3_prepare failed", sqlite3_errmsg(s->sql));
345
346 return HANDLER_ERROR;
347 }
348
349 if (SQLITE_OK != sqlite3_prepare(s->sql,
350 CONST_STR_LEN("SELECT locktoken, resource, lockscope, locktype, owner, depth, timeout-CURRENT_TIME FROM locks WHERE resource = ?"),
351 &(s->stmt_read_lock_by_uri), &next_stmt)) {
352 /* prepare failed */
353 log_error_write(srv, __FILE__, __LINE__, "ss", "sqlite3_prepare failed", sqlite3_errmsg(s->sql));
354
355 return HANDLER_ERROR;
356 }
357
358 if (SQLITE_OK != sqlite3_prepare(s->sql,
359 CONST_STR_LEN("UPDATE locks SET timeout = CURRENT_TIME + 600 WHERE locktoken = ?"),
360 &(s->stmt_refresh_lock), &next_stmt)) {
361 /* prepare failed */
362 log_error_write(srv, __FILE__, __LINE__, "ss", "sqlite3_prepare failed", sqlite3_errmsg(s->sql));
363
364 return HANDLER_ERROR;
365 }
366
367
368 #else
369 log_error_write(srv, __FILE__, __LINE__, "s", "Sorry, no sqlite3 and libxml2 support include, compile with --with-webdav-props");
370 return HANDLER_ERROR;
371 #endif
372 }
373 }
374
375 return HANDLER_GO_ON;
376 }
377
378 #define PATCH_OPTION(x) \
379 p->conf.x = s->x;
380 static int mod_webdav_patch_connection(server *srv, connection *con, plugin_data *p) {
381 size_t i, j;
382 plugin_config *s = p->config_storage[0];
383
384 PATCH_OPTION(enabled);
385 PATCH_OPTION(is_readonly);
386 PATCH_OPTION(log_xml);
387
388 #ifdef USE_PROPPATCH
389 PATCH_OPTION(sql);
390 PATCH_OPTION(stmt_update_prop);
391 PATCH_OPTION(stmt_delete_prop);
392 PATCH_OPTION(stmt_select_prop);
393 PATCH_OPTION(stmt_select_propnames);
394
395 PATCH_OPTION(stmt_delete_uri);
396 PATCH_OPTION(stmt_move_uri);
397 PATCH_OPTION(stmt_copy_uri);
398
399 PATCH_OPTION(stmt_remove_lock);
400 PATCH_OPTION(stmt_refresh_lock);
401 PATCH_OPTION(stmt_create_lock);
402 PATCH_OPTION(stmt_read_lock);
403 PATCH_OPTION(stmt_read_lock_by_uri);
404 #endif
405 /* skip the first, the global context */
406 for (i = 1; i < srv->config_context->used; i++) {
407 data_config *dc = (data_config *)srv->config_context->data[i];
408 s = p->config_storage[i];
409
410 /* condition didn't match */
411 if (!config_check_cond(srv, con, dc)) continue;
412
413 /* merge config */
414 for (j = 0; j < dc->value->used; j++) {
415 data_unset *du = dc->value->data[j];
416
417 if (buffer_is_equal_string(du->key, CONST_STR_LEN("webdav.activate"))) {
418 PATCH_OPTION(enabled);
419 } else if (buffer_is_equal_string(du->key, CONST_STR_LEN("webdav.is-readonly"))) {
420 PATCH_OPTION(is_readonly);
421 } else if (buffer_is_equal_string(du->key, CONST_STR_LEN("webdav.log-xml"))) {
422 PATCH_OPTION(log_xml);
423 } else if (buffer_is_equal_string(du->key, CONST_STR_LEN("webdav.sqlite-db-name"))) {
424 #ifdef USE_PROPPATCH
425 PATCH_OPTION(sql);
426 PATCH_OPTION(stmt_update_prop);
427 PATCH_OPTION(stmt_delete_prop);
428 PATCH_OPTION(stmt_select_prop);
429 PATCH_OPTION(stmt_select_propnames);
430
431 PATCH_OPTION(stmt_delete_uri);
432 PATCH_OPTION(stmt_move_uri);
433 PATCH_OPTION(stmt_copy_uri);
434
435 PATCH_OPTION(stmt_remove_lock);
436 PATCH_OPTION(stmt_refresh_lock);
437 PATCH_OPTION(stmt_create_lock);
438 PATCH_OPTION(stmt_read_lock);
439 PATCH_OPTION(stmt_read_lock_by_uri);
440 #endif
441 }
442 }
443 }
444
445 return 0;
446 }
447
448 URIHANDLER_FUNC(mod_webdav_uri_handler) {
449 plugin_data *p = p_d;
450
451 UNUSED(srv);
452
453 if (buffer_is_empty(con->uri.path)) return HANDLER_GO_ON;
454
455 mod_webdav_patch_connection(srv, con, p);
456
457 if (!p->conf.enabled) return HANDLER_GO_ON;
458
459 switch (con->request.http_method) {
460 case HTTP_METHOD_OPTIONS:
461 /* we fake a little bit but it makes MS W2k happy and it let's us mount the volume */
462 response_header_overwrite(srv, con, CONST_STR_LEN("DAV"), CONST_STR_LEN("1,2"));
463 response_header_overwrite(srv, con, CONST_STR_LEN("MS-Author-Via"), CONST_STR_LEN("DAV"));
464
465 if (p->conf.is_readonly) {
466 response_header_insert(srv, con, CONST_STR_LEN("Allow"), CONST_STR_LEN("PROPFIND"));
467 } else {
468 response_header_insert(srv, con, CONST_STR_LEN("Allow"), CONST_STR_LEN("PROPFIND, DELETE, MKCOL, PUT, MOVE, COPY, PROPPATCH, LOCK, UNLOCK"));
469 }
470 break;
471 default:
472 break;
473 }
474
475 /* not found */
476 return HANDLER_GO_ON;
477 }
478 static int webdav_gen_prop_tag(server *srv, connection *con,
479 char *prop_name,
480 char *prop_ns,
481 char *value,
482 buffer *b) {
483
484 UNUSED(srv);
485 UNUSED(con);
486
487 if (value) {
488 buffer_append_string_len(b,CONST_STR_LEN("<"));
489 buffer_append_string(b, prop_name);
490 buffer_append_string_len(b, CONST_STR_LEN(" xmlns=\""));
491 buffer_append_string(b, prop_ns);
492 buffer_append_string_len(b, CONST_STR_LEN("\">"));
493
494 buffer_append_string(b, value);
495
496 buffer_append_string_len(b,CONST_STR_LEN("</"));
497 buffer_append_string(b, prop_name);
498 buffer_append_string_len(b, CONST_STR_LEN(">"));
499 } else {
500 buffer_append_string_len(b,CONST_STR_LEN("<"));
501 buffer_append_string(b, prop_name);
502 buffer_append_string_len(b, CONST_STR_LEN(" xmlns=\""));
503 buffer_append_string(b, prop_ns);
504 buffer_append_string_len(b, CONST_STR_LEN("\"/>"));
505 }
506
507 return 0;
508 }
509
510
511 static int webdav_gen_response_status_tag(server *srv, connection *con, physical *dst, int status, buffer *b) {
512 UNUSED(srv);
513
514 buffer_append_string_len(b,CONST_STR_LEN("<D:response xmlns:ns0=\"urn:uuid:c2f41010-65b3-11d1-a29f-00aa00c14882/\">\n"));
515
516 buffer_append_string_len(b,CONST_STR_LEN("<D:href>\n"));
517 buffer_append_string_buffer(b, dst->rel_path);
518 buffer_append_string_len(b,CONST_STR_LEN("</D:href>\n"));
519 buffer_append_string_len(b,CONST_STR_LEN("<D:status>\n"));
520
521 if (con->request.http_version == HTTP_VERSION_1_1) {
522 buffer_copy_string_len(b, CONST_STR_LEN("HTTP/1.1 "));
523 } else {
524 buffer_copy_string_len(b, CONST_STR_LEN("HTTP/1.0 "));
525 }
526 buffer_append_int(b, status);
527 buffer_append_string_len(b, CONST_STR_LEN(" "));
528 buffer_append_string(b, get_http_status_name(status));
529
530 buffer_append_string_len(b,CONST_STR_LEN("</D:status>\n"));
531 buffer_append_string_len(b,CONST_STR_LEN("</D:response>\n"));
532
533 return 0;
534 }
535
536 static int webdav_delete_file(server *srv, connection *con, plugin_data *p, physical *dst, buffer *b) {
537 int status = 0;
538
539 /* try to unlink it */
540 if (-1 == unlink(dst->path->ptr)) {
541 switch(errno) {
542 case EACCES:
543 case EPERM:
544 /* 403 */
545 status = 403;
546 break;
547 default:
548 status = 501;
549 break;
550 }
551 webdav_gen_response_status_tag(srv, con, dst, status, b);
552 } else {
553 #ifdef USE_PROPPATCH
554 sqlite3_stmt *stmt = p->conf.stmt_delete_uri;
555
556 if (!stmt) {
557 status = 403;
558 webdav_gen_response_status_tag(srv, con, dst, status, b);
559 } else {
560 sqlite3_reset(stmt);
561
562 /* bind the values to the insert */
563
564 sqlite3_bind_text(stmt, 1,
565 CONST_BUF_LEN(dst->rel_path),
566 SQLITE_TRANSIENT);
567
568 if (SQLITE_DONE != sqlite3_step(stmt)) {
569 /* */
570 }
571 }
572 #else
573 UNUSED(p);
574 #endif
575 }
576
577 return (status != 0);
578 }
579
580 static int webdav_delete_dir(server *srv, connection *con, plugin_data *p, physical *dst, buffer *b) {
581 DIR *dir;
582 int have_multi_status = 0;
583 physical d;
584
585 d.path = buffer_init();
586 d.rel_path = buffer_init();
587
588 if (NULL != (dir = opendir(dst->path->ptr))) {
589 struct dirent *de;
590
591 while(NULL != (de = readdir(dir))) {
592 struct stat st;
593 int status = 0;
594
595 if ((de->d_name[0] == '.' && de->d_name[1] == '\0') ||
596 (de->d_name[0] == '.' && de->d_name[1] == '.' && de->d_name[2] == '\0')) {
597 continue;
598 /* ignore the parent dir */
599 }
600
601 buffer_copy_buffer(d.path, dst->path);
602 buffer_append_slash(d.path);
603 buffer_append_string(d.path, de->d_name);
604
605 buffer_copy_buffer(d.rel_path, dst->rel_path);
606 buffer_append_slash(d.rel_path);
607 buffer_append_string(d.rel_path, de->d_name);
608
609 /* stat and unlink afterwards */
610 if (-1 == stat(d.path->ptr, &st)) {
611 /* don't about it yet, rmdir will fail too */
612 } else if (S_ISDIR(st.st_mode)) {
613 have_multi_status = webdav_delete_dir(srv, con, p, &d, b);
614
615 /* try to unlink it */
616 if (-1 == rmdir(d.path->ptr)) {
617 switch(errno) {
618 case EACCES:
619 case EPERM:
620 /* 403 */
621 status = 403;
622 break;
623 default:
624 status = 501;
625 break;
626 }
627 have_multi_status = 1;
628
629 webdav_gen_response_status_tag(srv, con, &d, status, b);
630 } else {
631 #ifdef USE_PROPPATCH
632 sqlite3_stmt *stmt = p->conf.stmt_delete_uri;
633
634 status = 0;
635
636 if (stmt) {
637 sqlite3_reset(stmt);
638
639 /* bind the values to the insert */
640
641 sqlite3_bind_text(stmt, 1,
642 CONST_BUF_LEN(d.rel_path),
643 SQLITE_TRANSIENT);
644
645 if (SQLITE_DONE != sqlite3_step(stmt)) {
646 /* */
647 }
648 }
649 #endif
650 }
651 } else {
652 have_multi_status = webdav_delete_file(srv, con, p, &d, b);
653 }
654 }
655 closedir(dir);
656
657 buffer_free(d.path);
658 buffer_free(d.rel_path);
659 }
660
661 return have_multi_status;
662 }
663
664 /* don't want to block when open()ing a fifo */
665 #if defined(O_NONBLOCK)
666 # define FIFO_NONBLOCK O_NONBLOCK
667 #else
668 # define FIFO_NONBLOCK 0
669 #endif
670
671 #ifndef O_BINARY
672 #define O_BINARY 0
673 #endif
674
675 static int webdav_copy_file(server *srv, connection *con, plugin_data *p, physical *src, physical *dst, int overwrite) {
676 char *data;
677 ssize_t rd, wr, offset;
678 int status = 0, ifd, ofd;
679 UNUSED(srv);
680 UNUSED(con);
681
682 if (-1 == (ifd = open(src->path->ptr, O_RDONLY | O_BINARY | FIFO_NONBLOCK))) {
683 return 403;
684 }
685
686 if (-1 == (ofd = open(dst->path->ptr, O_WRONLY|O_TRUNC|O_CREAT|(overwrite ? 0 : O_EXCL), WEBDAV_FILE_MODE))) {
687 /* opening the destination failed for some reason */
688 switch(errno) {
689 case EEXIST:
690 status = 412;
691 break;
692 case EISDIR:
693 status = 409;
694 break;
695 case ENOENT:
696 /* at least one part in the middle wasn't existing */
697 status = 409;
698 break;
699 default:
700 status = 403;
701 break;
702 }
703 close(ifd);
704 return status;
705 }
706
707 data = malloc(131072);
708 force_assert(data);
709
710 while (0 < (rd = read(ifd, data, 131072))) {
711 offset = 0;
712 do {
713 wr = write(ofd, data+offset, (size_t)(rd-offset));
714 } while (wr >= 0 ? (offset += wr) != rd : (errno == EINTR));
715 if (-1 == wr) {
716 status = (errno == ENOSPC) ? 507 : 403;
717 break;
718 }
719
720 }
721 if (0 != rd && 0 == status) status = 403;
722
723 free(data);
724 close(ifd);
725 if (0 != close(ofd)) {
726 if (0 == status) status = (errno == ENOSPC) ? 507 : 403;
727 log_error_write(srv, __FILE__, __LINE__, "sbss",
728 "close ", dst->path, "failed: ", strerror(errno));
729 }
730
731 #ifdef USE_PROPPATCH
732 if (0 == status) {
733 /* copy worked fine, copy connected properties */
734 sqlite3_stmt *stmt = p->conf.stmt_copy_uri;
735
736 if (stmt) {
737 sqlite3_reset(stmt);
738
739 /* bind the values to the insert */
740 sqlite3_bind_text(stmt, 1,
741 CONST_BUF_LEN(dst->rel_path),
742 SQLITE_TRANSIENT);
743
744 sqlite3_bind_text(stmt, 2,
745 CONST_BUF_LEN(src->rel_path),
746 SQLITE_TRANSIENT);
747
748 if (SQLITE_DONE != sqlite3_step(stmt)) {
749 /* */
750 }
751 }
752 }
753 #else
754 UNUSED(p);
755 #endif
756 return status;
757 }
758
759 static int webdav_copy_dir(server *srv, connection *con, plugin_data *p, physical *src, physical *dst, int overwrite) {
760 DIR *srcdir;
761 int status = 0;
762
763 if (NULL != (srcdir = opendir(src->path->ptr))) {
764 struct dirent *de;
765 physical s, d;
766
767 s.path = buffer_init();
768 s.rel_path = buffer_init();
769
770 d.path = buffer_init();
771 d.rel_path = buffer_init();
772
773 while (NULL != (de = readdir(srcdir))) {
774 struct stat st;
775
776 if ((de->d_name[0] == '.' && de->d_name[1] == '\0')
777 || (de->d_name[0] == '.' && de->d_name[1] == '.' && de->d_name[2] == '\0')) {
778 continue;
779 }
780
781 buffer_copy_buffer(s.path, src->path);
782 buffer_append_slash(s.path);
783 buffer_append_string(s.path, de->d_name);
784
785 buffer_copy_buffer(d.path, dst->path);
786 buffer_append_slash(d.path);
787 buffer_append_string(d.path, de->d_name);
788
789 buffer_copy_buffer(s.rel_path, src->rel_path);
790 buffer_append_slash(s.rel_path);
791 buffer_append_string(s.rel_path, de->d_name);
792
793 buffer_copy_buffer(d.rel_path, dst->rel_path);
794 buffer_append_slash(d.rel_path);
795 buffer_append_string(d.rel_path, de->d_name);
796
797 if (-1 == stat(s.path->ptr, &st)) {
798 /* why ? */
799 } else if (S_ISDIR(st.st_mode)) {
800 /* a directory */
801 if (-1 == mkdir(d.path->ptr, WEBDAV_DIR_MODE) &&
802 errno != EEXIST) {
803 /* WTH ? */
804 } else {
805 #ifdef USE_PROPPATCH
806 sqlite3_stmt *stmt = p->conf.stmt_copy_uri;
807
808 if (0 != (status = webdav_copy_dir(srv, con, p, &s, &d, overwrite))) {
809 break;
810 }
811 /* directory is copied, copy the properties too */
812
813 if (stmt) {
814 sqlite3_reset(stmt);
815
816 /* bind the values to the insert */
817 sqlite3_bind_text(stmt, 1,
818 CONST_BUF_LEN(dst->rel_path),
819 SQLITE_TRANSIENT);
820
821 sqlite3_bind_text(stmt, 2,
822 CONST_BUF_LEN(src->rel_path),
823 SQLITE_TRANSIENT);
824
825 if (SQLITE_DONE != sqlite3_step(stmt)) {
826 /* */
827 }
828 }
829 #endif
830 }
831 } else if (S_ISREG(st.st_mode)) {
832 /* a plain file */
833 if (0 != (status = webdav_copy_file(srv, con, p, &s, &d, overwrite))) {
834 break;
835 }
836 }
837 }
838
839 buffer_free(s.path);
840 buffer_free(s.rel_path);
841 buffer_free(d.path);
842 buffer_free(d.rel_path);
843
844 closedir(srcdir);
845 }
846
847 return status;
848 }
849
850 #ifdef USE_LOCKS
851 static void webdav_activelock(buffer *b,
852 const buffer *locktoken, const char *lockscope, const char *locktype, int depth, int timeout) {
853 buffer_append_string_len(b, CONST_STR_LEN("<D:activelock>\n"));
854
855 buffer_append_string_len(b, CONST_STR_LEN("<D:lockscope>"));
856 buffer_append_string_len(b, CONST_STR_LEN("<D:"));
857 buffer_append_string(b, lockscope);
858 buffer_append_string_len(b, CONST_STR_LEN("/>"));
859 buffer_append_string_len(b, CONST_STR_LEN("</D:lockscope>\n"));
860
861 buffer_append_string_len(b, CONST_STR_LEN("<D:locktype>"));
862 buffer_append_string_len(b, CONST_STR_LEN("<D:"));
863 buffer_append_string(b, locktype);
864 buffer_append_string_len(b, CONST_STR_LEN("/>"));
865 buffer_append_string_len(b, CONST_STR_LEN("</D:locktype>\n"));
866
867 buffer_append_string_len(b, CONST_STR_LEN("<D:depth>"));
868 buffer_append_string(b, depth == 0 ? "0" : "infinity");
869 buffer_append_string_len(b, CONST_STR_LEN("</D:depth>\n"));
870
871 buffer_append_string_len(b, CONST_STR_LEN("<D:timeout>"));
872 buffer_append_string_len(b, CONST_STR_LEN("Second-"));
873 buffer_append_int(b, timeout);
874 buffer_append_string_len(b, CONST_STR_LEN("</D:timeout>\n"));
875
876 buffer_append_string_len(b, CONST_STR_LEN("<D:owner>"));
877 buffer_append_string_len(b, CONST_STR_LEN("</D:owner>\n"));
878
879 buffer_append_string_len(b, CONST_STR_LEN("<D:locktoken>"));
880 buffer_append_string_len(b, CONST_STR_LEN("<D:href>"));
881 buffer_append_string_buffer(b, locktoken);
882 buffer_append_string_len(b, CONST_STR_LEN("</D:href>"));
883 buffer_append_string_len(b, CONST_STR_LEN("</D:locktoken>\n"));
884
885 buffer_append_string_len(b, CONST_STR_LEN("</D:activelock>\n"));
886 }
887
888 static void webdav_get_live_property_lockdiscovery(server *srv, connection *con, plugin_data *p, physical *dst, buffer *b) {
889
890 sqlite3_stmt *stmt = p->conf.stmt_read_lock_by_uri;
891 if (!stmt) { /*(should not happen)*/
892 buffer_append_string_len(b, CONST_STR_LEN("<D:lockdiscovery>\n</D:lockdiscovery>\n"));
893 return;
894 }
895 UNUSED(srv);
896 UNUSED(con);
897
898 /* SELECT locktoken, resource, lockscope, locktype, owner, depth, timeout
899 * FROM locks
900 * WHERE resource = ? */
901
902 sqlite3_reset(stmt);
903
904 sqlite3_bind_text(stmt, 1,
905 CONST_BUF_LEN(dst->rel_path),
906 SQLITE_TRANSIENT);
907
908 buffer_append_string_len(b, CONST_STR_LEN("<D:lockdiscovery>\n"));
909 while (SQLITE_ROW == sqlite3_step(stmt)) {
910 const char *lockscope = (const char *)sqlite3_column_text(stmt, 2);
911 const char *locktype = (const char *)sqlite3_column_text(stmt, 3);
912 const int depth = sqlite3_column_int(stmt, 5);
913 const int timeout = sqlite3_column_int(stmt, 6);
914 buffer locktoken = { NULL, 0, 0 };
915 locktoken.ptr = (char *)sqlite3_column_text(stmt, 0);
916 locktoken.used = sqlite3_column_bytes(stmt, 0);
917 if (locktoken.used) ++locktoken.used;
918 locktoken.size = locktoken.used;
919
920 if (timeout > 0) {
921 webdav_activelock(b, &locktoken, lockscope, locktype, depth, timeout);
922 }
923 }
924 buffer_append_string_len(b, CONST_STR_LEN("</D:lockdiscovery>\n"));
925 }
926 #endif
927
928 static int webdav_get_live_property(server *srv, connection *con, plugin_data *p, physical *dst, char *prop_name, buffer *b) {
929 stat_cache_entry *sce = NULL;
930 int found = 0;
931
932 UNUSED(p);
933
934 if (HANDLER_ERROR != (stat_cache_get_entry(srv, con, dst->path, &sce))) {
935 char ctime_buf[] = "2005-08-18T07:27:16Z";
936 char mtime_buf[] = "Thu, 18 Aug 2005 07:27:16 GMT";
937 size_t k;
938
939 if (0 == strcmp(prop_name, "resourcetype")) {
940 if (S_ISDIR(sce->st.st_mode)) {
941 buffer_append_string_len(b, CONST_STR_LEN("<D:resourcetype><D:collection/></D:resourcetype>"));
942 found = 1;
943 }
944 } else if (0 == strcmp(prop_name, "getcontenttype")) {
945 if (S_ISDIR(sce->st.st_mode)) {
946 buffer_append_string_len(b, CONST_STR_LEN("<D:getcontenttype>httpd/unix-directory</D:getcontenttype>"));
947 found = 1;
948 } else if(S_ISREG(sce->st.st_mode)) {
949 for (k = 0; k < con->conf.mimetypes->used; k++) {
950 data_string *ds = (data_string *)con->conf.mimetypes->data[k];
951
952 if (buffer_is_empty(ds->key)) continue;
953
954 if (buffer_is_equal_right_len(dst->path, ds->key, buffer_string_length(ds->key))) {
955 buffer_append_string_len(b,CONST_STR_LEN("<D:getcontenttype>"));
956 buffer_append_string_buffer(b, ds->value);
957 buffer_append_string_len(b, CONST_STR_LEN("</D:getcontenttype>"));
958 found = 1;
959
960 break;
961 }
962 }
963 }
964 } else if (0 == strcmp(prop_name, "creationdate")) {
965 buffer_append_string_len(b, CONST_STR_LEN("<D:creationdate ns0:dt=\"dateTime.tz\">"));
966 strftime(ctime_buf, sizeof(ctime_buf), "%Y-%m-%dT%H:%M:%SZ", gmtime(&(sce->st.st_ctime)));
967 buffer_append_string(b, ctime_buf);
968 buffer_append_string_len(b, CONST_STR_LEN("</D:creationdate>"));
969 found = 1;
970 } else if (0 == strcmp(prop_name, "getlastmodified")) {
971 buffer_append_string_len(b,CONST_STR_LEN("<D:getlastmodified ns0:dt=\"dateTime.rfc1123\">"));
972 strftime(mtime_buf, sizeof(mtime_buf), "%a, %d %b %Y %H:%M:%S GMT", gmtime(&(sce->st.st_mtime)));
973 buffer_append_string(b, mtime_buf);
974 buffer_append_string_len(b, CONST_STR_LEN("</D:getlastmodified>"));
975 found = 1;
976 } else if (0 == strcmp(prop_name, "getcontentlength")) {
977 buffer_append_string_len(b,CONST_STR_LEN("<D:getcontentlength>"));
978 buffer_append_int(b, sce->st.st_size);
979 buffer_append_string_len(b, CONST_STR_LEN("</D:getcontentlength>"));
980 found = 1;
981 } else if (0 == strcmp(prop_name, "getcontentlanguage")) {
982 buffer_append_string_len(b,CONST_STR_LEN("<D:getcontentlanguage>"));
983 buffer_append_string_len(b, CONST_STR_LEN("en"));
984 buffer_append_string_len(b, CONST_STR_LEN("</D:getcontentlanguage>"));
985 found = 1;
986 } else if (0 == strcmp(prop_name, "getetag")) {
987 etag_create(con->physical.etag, &sce->st, con->etag_flags);
988 buffer_append_string_len(b, CONST_STR_LEN("<D:getetag>"));
989 buffer_append_string_buffer(b, con->physical.etag);
990 buffer_append_string_len(b, CONST_STR_LEN("</D:getetag>"));
991 buffer_reset(con->physical.etag);
992 found = 1;
993 #ifdef USE_LOCKS
994 } else if (0 == strcmp(prop_name, "lockdiscovery")) {
995 webdav_get_live_property_lockdiscovery(srv, con, p, dst, b);
996 found = 1;
997 } else if (0 == strcmp(prop_name, "supportedlock")) {
998 buffer_append_string_len(b,CONST_STR_LEN("<D:supportedlock>"));
999 buffer_append_string_len(b,CONST_STR_LEN("<D:lockentry>"));
1000 buffer_append_string_len(b,CONST_STR_LEN("<D:lockscope><D:exclusive/></D:lockscope>"));
1001 buffer_append_string_len(b,CONST_STR_LEN("<D:locktype><D:write/></D:locktype>"));
1002 buffer_append_string_len(b,CONST_STR_LEN("</D:lockentry>"));
1003 buffer_append_string_len(b, CONST_STR_LEN("</D:supportedlock>"));
1004 found = 1;
1005 #endif
1006 }
1007 }
1008
1009 return found ? 0 : -1;
1010 }
1011
1012 static int webdav_get_property(server *srv, connection *con, plugin_data *p, physical *dst, char *prop_name, char *prop_ns, buffer *b) {
1013 if (0 == strcmp(prop_ns, "DAV:")) {
1014 /* a local 'live' property */
1015 return webdav_get_live_property(srv, con, p, dst, prop_name, b);
1016 } else {
1017 int found = 0;
1018 #ifdef USE_PROPPATCH
1019 sqlite3_stmt *stmt = p->conf.stmt_select_prop;
1020
1021 if (stmt) {
1022 /* perhaps it is in sqlite3 */
1023 sqlite3_reset(stmt);
1024
1025 /* bind the values to the insert */
1026
1027 sqlite3_bind_text(stmt, 1,
1028 CONST_BUF_LEN(dst->rel_path),
1029 SQLITE_TRANSIENT);
1030 sqlite3_bind_text(stmt, 2,
1031 prop_name,
1032 strlen(prop_name),
1033 SQLITE_TRANSIENT);
1034 sqlite3_bind_text(stmt, 3,
1035 prop_ns,
1036 strlen(prop_ns),
1037 SQLITE_TRANSIENT);
1038
1039 /* it is the PK */
1040 while (SQLITE_ROW == sqlite3_step(stmt)) {
1041 /* there is a row for us, we only expect a single col 'value' */
1042 webdav_gen_prop_tag(srv, con, prop_name, prop_ns, (char *)sqlite3_column_text(stmt, 0), b);
1043 found = 1;
1044 }
1045 }
1046 #endif
1047 return found ? 0 : -1;
1048 }
1049
1050 /* not found */
1051 return -1;
1052 }
1053
1054 typedef struct {
1055 char *ns;
1056 char *prop;
1057 } webdav_property;
1058
1059 static webdav_property live_properties[] = {
1060 { "DAV:", "creationdate" },
1061 /*{ "DAV:", "displayname" },*//*(not implemented)*/
1062 { "DAV:", "getcontentlanguage" },
1063 { "DAV:", "getcontentlength" },
1064 { "DAV:", "getcontenttype" },
1065 { "DAV:", "getetag" },
1066 { "DAV:", "getlastmodified" },
1067 { "DAV:", "resourcetype" },
1068 /*{ "DAV:", "source" },*//*(not implemented)*/
1069 #ifdef USE_LOCKS
1070 { "DAV:", "lockdiscovery" },
1071 { "DAV:", "supportedlock" },
1072 #endif
1073
1074 { NULL, NULL }
1075 };
1076
1077 typedef struct {
1078 webdav_property **ptr;
1079
1080 size_t used;
1081 size_t size;
1082 } webdav_properties;
1083
1084 static int webdav_get_props(server *srv, connection *con, plugin_data *p, physical *dst, webdav_properties *props, buffer *b_200, buffer *b_404) {
1085 size_t i;
1086
1087 if (props && props->used) {
1088 for (i = 0; i < props->used; i++) {
1089 webdav_property *prop;
1090
1091 prop = props->ptr[i];
1092
1093 if (0 != webdav_get_property(srv, con, p,
1094 dst, prop->prop, prop->ns, b_200)) {
1095 webdav_gen_prop_tag(srv, con, prop->prop, prop->ns, NULL, b_404);
1096 }
1097 }
1098 } else {
1099 for (i = 0; live_properties[i].prop; i++) {
1100 /* a local 'live' property */
1101 webdav_get_live_property(srv, con, p, dst, live_properties[i].prop, b_200);
1102 }
1103 }
1104
1105 return 0;
1106 }
1107
1108 #ifdef USE_PROPPATCH
1109 static int webdav_parse_chunkqueue(server *srv, connection *con, plugin_data *p, chunkqueue *cq, xmlDoc **ret_xml) {
1110 xmlParserCtxtPtr ctxt;
1111 xmlDoc *xml;
1112 int res;
1113 int err;
1114
1115 chunk *c;
1116
1117 UNUSED(con);
1118
1119 /* read the chunks in to the XML document */
1120 ctxt = xmlCreatePushParserCtxt(NULL, NULL, NULL, 0, NULL);
1121
1122 for (c = cq->first; cq->bytes_out != cq->bytes_in; c = cq->first) {
1123 size_t weWant = cq->bytes_out - cq->bytes_in;
1124 size_t weHave;
1125 int mapped;
1126 void *data;
1127
1128 switch(c->type) {
1129 case FILE_CHUNK:
1130 weHave = c->file.length - c->offset;
1131
1132 if (weHave > weWant) weHave = weWant;
1133
1134 /* xml chunks are always memory, mmap() is our friend */
1135 mapped = (c->file.mmap.start != MAP_FAILED);
1136 if (mapped) {
1137 data = c->file.mmap.start + c->offset;
1138 } else {
1139 if (-1 == c->file.fd && /* open the file if not already open */
1140 -1 == (c->file.fd = open(c->file.name->ptr, O_RDONLY))) {
1141 log_error_write(srv, __FILE__, __LINE__, "ss", "open failed: ", strerror(errno));
1142
1143 return -1;
1144 }
1145
1146 if (MAP_FAILED != (c->file.mmap.start = mmap(0, c->file.length, PROT_READ, MAP_PRIVATE, c->file.fd, 0))) {
1147 /* chunk_reset() or chunk_free() will cleanup for us */
1148 c->file.mmap.length = c->file.length;
1149 data = c->file.mmap.start + c->offset;
1150 mapped = 1;
1151 } else {
1152 ssize_t rd;
1153 if (weHave > 65536) weHave = 65536;
1154 data = malloc(weHave);
1155 force_assert(data);
1156 if (-1 == lseek(c->file.fd, c->file.start + c->offset, SEEK_SET)
1157 || 0 > (rd = read(c->file.fd, data, weHave))) {
1158 log_error_write(srv, __FILE__, __LINE__, "ssbd", "lseek/read failed: ",
1159 strerror(errno), c->file.name, c->file.fd);
1160 free(data);
1161 return -1;
1162 }
1163 weHave = (size_t)rd;
1164 }
1165 }
1166
1167 if (XML_ERR_OK != (err = xmlParseChunk(ctxt, data, weHave, 0))) {
1168 log_error_write(srv, __FILE__, __LINE__, "sodd", "xmlParseChunk failed at:", cq->bytes_out, weHave, err);
1169 }
1170
1171 chunkqueue_mark_written(cq, weHave);
1172
1173 if (!mapped) free(data);
1174 break;
1175 case MEM_CHUNK:
1176 /* append to the buffer */
1177 weHave = buffer_string_length(c->mem) - c->offset;
1178
1179 if (weHave > weWant) weHave = weWant;
1180
1181 if (p->conf.log_xml) {
1182 log_error_write(srv, __FILE__, __LINE__, "ss", "XML-request-body:", c->mem->ptr + c->offset);
1183 }
1184
1185 if (XML_ERR_OK != (err = xmlParseChunk(ctxt, c->mem->ptr + c->offset, weHave, 0))) {
1186 log_error_write(srv, __FILE__, __LINE__, "sodd", "xmlParseChunk failed at:", cq->bytes_out, weHave, err);
1187 }
1188
1189 chunkqueue_mark_written(cq, weHave);
1190
1191 break;
1192 }
1193 }
1194
1195 switch ((err = xmlParseChunk(ctxt, 0, 0, 1))) {
1196 case XML_ERR_DOCUMENT_END:
1197 case XML_ERR_OK:
1198 break;
1199 default:
1200 log_error_write(srv, __FILE__, __LINE__, "sd", "xmlParseChunk failed at final packet:", err);
1201 break;
1202 }
1203
1204 xml = ctxt->myDoc;
1205 res = ctxt->wellFormed;
1206 xmlFreeParserCtxt(ctxt);
1207
1208 if (res == 0) {
1209 xmlFreeDoc(xml);
1210 } else {
1211 *ret_xml = xml;
1212 }
1213
1214 return res;
1215 }
1216 #endif
1217
1218 #ifdef USE_LOCKS
1219 static int webdav_lockdiscovery(server *srv, connection *con,
1220 buffer *locktoken, const char *lockscope, const char *locktype, int depth) {
1221
1222 buffer *b = buffer_init();
1223
1224 response_header_overwrite(srv, con, CONST_STR_LEN("Lock-Token"), CONST_BUF_LEN(locktoken));
1225
1226 response_header_overwrite(srv, con,
1227 CONST_STR_LEN("Content-Type"),
1228 CONST_STR_LEN("text/xml; charset=\"utf-8\""));
1229
1230 buffer_copy_string_len(b, CONST_STR_LEN("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"));
1231
1232 buffer_append_string_len(b,CONST_STR_LEN("<D:prop xmlns:D=\"DAV:\" xmlns:ns0=\"urn:uuid:c2f41010-65b3-11d1-a29f-00aa00c14882/\">\n"));
1233 buffer_append_string_len(b,CONST_STR_LEN("<D:lockdiscovery>\n"));
1234 webdav_activelock(b, locktoken, lockscope, locktype, depth, 600);
1235 buffer_append_string_len(b,CONST_STR_LEN("</D:lockdiscovery>\n"));
1236 buffer_append_string_len(b,CONST_STR_LEN("</D:prop>\n"));
1237
1238 chunkqueue_append_buffer(con->write_queue, b);
1239 buffer_free(b);
1240
1241 return 0;
1242 }
1243 #endif
1244
1245 /**
1246 * check if resource is having the right locks to access to resource
1247 *
1248 *
1249 *
1250 */
1251 static int webdav_has_lock(server *srv, connection *con, plugin_data *p, buffer *uri) {
1252 int has_lock = 1;
1253
1254 #ifdef USE_LOCKS
1255 data_string *ds;
1256 UNUSED(srv);
1257
1258 /**
1259 * This implementation is more fake than real
1260 * we need a parser for the If: header to really handle the full scope
1261 *
1262 * X-Litmus: locks: 11 (owner_modify)
1263 * If: <http://127.0.0.1:1025/dav/litmus/lockme> (<opaquelocktoken:2165478d-0611-49c4-be92-e790d68a38f1>)
1264 * - a tagged check:
1265 * if http://127.0.0.1:1025/dav/litmus/lockme is locked with
1266 * opaquelocktoken:2165478d-0611-49c4-be92-e790d68a38f1, go on
1267 *
1268 * X-Litmus: locks: 16 (fail_cond_put)
1269 * If: (<DAV:no-lock> ["-1622396671"])
1270 * - untagged:
1271 * go on if the resource has the etag [...] and the lock
1272 */
1273 if (NULL != (ds = (data_string *)array_get_element(con->request.headers, "If"))) {
1274 /* Ooh, ooh. A if tag, now the fun begins.
1275 *
1276 * this can only work with a real parser
1277 **/
1278 } else {
1279 /* we didn't provided a lock-token -> */
1280 /* if the resource is locked -> 423 */
1281
1282 sqlite3_stmt *stmt = p->conf.stmt_read_lock_by_uri;
1283
1284 sqlite3_reset(stmt);
1285
1286 sqlite3_bind_text(stmt, 1,
1287 CONST_BUF_LEN(uri),
1288 SQLITE_TRANSIENT);
1289
1290 while (SQLITE_ROW == sqlite3_step(stmt)) {
1291 has_lock = 0;
1292 }
1293 }
1294 #else
1295 UNUSED(srv);
1296 UNUSED(con);
1297 UNUSED(p);
1298 UNUSED(uri);
1299 #endif
1300
1301 return has_lock;
1302 }
1303
1304
1305 SUBREQUEST_FUNC(mod_webdav_subrequest_handler_huge) {
1306 plugin_data *p = p_d;
1307 buffer *b;
1308 DIR *dir;
1309 data_string *ds;
1310 int depth = -1; /* (Depth: infinity) */
1311 struct stat st;
1312 buffer *prop_200;
1313 buffer *prop_404;
1314 webdav_properties *req_props;
1315 stat_cache_entry *sce = NULL;
1316
1317 UNUSED(srv);
1318
1319 if (!p->conf.enabled) return HANDLER_GO_ON;
1320 /* physical path is setup */
1321 if (buffer_is_empty(con->physical.path)) return HANDLER_GO_ON;
1322
1323 /* PROPFIND need them */
1324 if (NULL != (ds = (data_string *)array_get_element(con->request.headers, "Depth")) && 1 == buffer_string_length(ds->value)) {
1325 if ('0' == *ds->value->ptr) {
1326 depth = 0;
1327 } else if ('1' == *ds->value->ptr) {
1328 depth = 1;
1329 }
1330 } /* else treat as Depth: infinity */
1331
1332 switch (con->request.http_method) {
1333 case HTTP_METHOD_PROPFIND:
1334 /* they want to know the properties of the directory */
1335 req_props = NULL;
1336
1337 /* is there a content-body ? */
1338
1339 switch (stat_cache_get_entry(srv, con, con->physical.path, &sce)) {
1340 case HANDLER_ERROR:
1341 if (errno == ENOENT) {
1342 con->http_status = 404;
1343 return HANDLER_FINISHED;
1344 }
1345 break;
1346 default:
1347 break;
1348 }
1349
1350 if (S_ISDIR(sce->st.st_mode) && con->physical.path->ptr[buffer_string_length(con->physical.path)-1] != '/') {
1351 http_response_redirect_to_directory(srv, con);
1352 return HANDLER_FINISHED;
1353 }
1354
1355 #ifdef USE_PROPPATCH
1356 /* any special requests or just allprop ? */
1357 if (con->request.content_length) {
1358 xmlDocPtr xml;
1359
1360 if (con->state == CON_STATE_READ_POST) {
1361 handler_t r = connection_handle_read_post_state(srv, con);
1362 if (r != HANDLER_GO_ON) return r;
1363 }
1364
1365 if (1 == webdav_parse_chunkqueue(srv, con, p, con->request_content_queue, &xml)) {
1366 xmlNode *rootnode = xmlDocGetRootElement(xml);
1367
1368 force_assert(rootnode);
1369
1370 if (0 == xmlStrcmp(rootnode->name, BAD_CAST "propfind")) {
1371 xmlNode *cmd;
1372
1373 req_props = calloc(1, sizeof(*req_props));
1374
1375 for (cmd = rootnode->children; cmd; cmd = cmd->next) {
1376
1377 if (0 == xmlStrcmp(cmd->name, BAD_CAST "prop")) {
1378 /* get prop by name */
1379 xmlNode *prop;
1380
1381 for (prop = cmd->children; prop; prop = prop->next) {
1382 if (prop->type == XML_TEXT_NODE) continue; /* ignore WS */
1383
1384 if (prop->ns &&
1385 (0 == xmlStrcmp(prop->ns->href, BAD_CAST "")) &&
1386 (0 != xmlStrcmp(prop->ns->prefix, BAD_CAST ""))) {
1387 size_t i;
1388 log_error_write(srv, __FILE__, __LINE__, "ss",
1389 "no name space for:",
1390 prop->name);
1391
1392 xmlFreeDoc(xml);
1393
1394 for (i = 0; i < req_props->used; i++) {
1395 free(req_props->ptr[i]->ns);
1396 free(req_props->ptr[i]->prop);
1397 free(req_props->ptr[i]);
1398 }
1399 free(req_props->ptr);
1400 free(req_props);
1401
1402 con->http_status = 400;
1403 return HANDLER_FINISHED;
1404 }
1405
1406 /* add property to requested list */
1407 if (req_props->size == 0) {
1408 req_props->size = 16;
1409 req_props->ptr = malloc(sizeof(*(req_props->ptr)) * req_props->size);
1410 } else if (req_props->used == req_props->size) {
1411 req_props->size += 16;
1412 req_props->ptr = realloc(req_props->ptr, sizeof(*(req_props->ptr)) * req_props->size);
1413 }
1414
1415 req_props->ptr[req_props->used] = malloc(sizeof(webdav_property));
1416 req_props->ptr[req_props->used]->ns = (char *)xmlStrdup(prop->ns ? prop->ns->href : (xmlChar *)"");
1417 req_props->ptr[req_props->used]->prop = (char *)xmlStrdup(prop->name);
1418 req_props->used++;
1419 }
1420 } else if (0 == xmlStrcmp(cmd->name, BAD_CAST "propname")) {
1421 sqlite3_stmt *stmt = p->conf.stmt_select_propnames;
1422
1423 if (stmt) {
1424 /* get all property names (EMPTY) */
1425 sqlite3_reset(stmt);
1426 /* bind the values to the insert */
1427
1428 sqlite3_bind_text(stmt, 1,
1429 CONST_BUF_LEN(con->uri.path),
1430 SQLITE_TRANSIENT);
1431
1432 if (SQLITE_DONE != sqlite3_step(stmt)) {
1433 }
1434 }
1435 } else if (0 == xmlStrcmp(cmd->name, BAD_CAST "allprop")) {
1436 /* get all properties (EMPTY) */
1437 }
1438 }
1439 }
1440
1441 xmlFreeDoc(xml);
1442 } else {
1443 con->http_status = 400;
1444 return HANDLER_FINISHED;
1445 }
1446 }
1447 #endif
1448 con->http_status = 207;
1449
1450 response_header_overwrite(srv, con, CONST_STR_LEN("Content-Type"), CONST_STR_LEN("text/xml; charset=\"utf-8\""));
1451
1452 b = buffer_init();
1453
1454 buffer_copy_string_len(b, CONST_STR_LEN("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"));
1455
1456 buffer_append_string_len(b,CONST_STR_LEN("<D:multistatus xmlns:D=\"DAV:\" xmlns:ns0=\"urn:uuid:c2f41010-65b3-11d1-a29f-00aa00c14882/\">\n"));
1457
1458 /* allprop */
1459
1460 prop_200 = buffer_init();
1461 prop_404 = buffer_init();
1462
1463 {
1464 /* Depth: 0 or Depth: 1 */
1465 webdav_get_props(srv, con, p, &(con->physical), req_props, prop_200, prop_404);
1466
1467 buffer_append_string_len(b,CONST_STR_LEN("<D:response>\n"));
1468 buffer_append_string_len(b,CONST_STR_LEN("<D:href>"));
1469 buffer_append_string_buffer(b, con->uri.scheme);
1470 buffer_append_string_len(b,CONST_STR_LEN("://"));
1471 buffer_append_string_buffer(b, con->uri.authority);
1472 buffer_append_string_encoded(b, CONST_BUF_LEN(con->uri.path), ENCODING_REL_URI);
1473 buffer_append_string_len(b,CONST_STR_LEN("</D:href>\n"));
1474
1475 if (!buffer_string_is_empty(prop_200)) {
1476 buffer_append_string_len(b,CONST_STR_LEN("<D:propstat>\n"));
1477 buffer_append_string_len(b,CONST_STR_LEN("<D:prop>\n"));
1478
1479 buffer_append_string_buffer(b, prop_200);
1480
1481 buffer_append_string_len(b,CONST_STR_LEN("</D:prop>\n"));
1482
1483 buffer_append_string_len(b,CONST_STR_LEN("<D:status>HTTP/1.1 200 OK</D:status>\n"));
1484
1485 buffer_append_string_len(b,CONST_STR_LEN("</D:propstat>\n"));
1486 }
1487 if (!buffer_string_is_empty(prop_404)) {
1488 buffer_append_string_len(b,CONST_STR_LEN("<D:propstat>\n"));
1489 buffer_append_string_len(b,CONST_STR_LEN("<D:prop>\n"));
1490
1491 buffer_append_string_buffer(b, prop_404);
1492
1493 buffer_append_string_len(b,CONST_STR_LEN("</D:prop>\n"));
1494
1495 buffer_append_string_len(b,CONST_STR_LEN("<D:status>HTTP/1.1 404 Not Found</D:status>\n"));
1496
1497 buffer_append_string_len(b,CONST_STR_LEN("</D:propstat>\n"));
1498 }
1499
1500 buffer_append_string_len(b,CONST_STR_LEN("</D:response>\n"));
1501 }
1502
1503 if (depth == 1) {
1504
1505 if (NULL != (dir = opendir(con->physical.path->ptr))) {
1506 struct dirent *de;
1507 physical d;
1508 physical *dst = &(con->physical);
1509
1510 d.path = buffer_init();
1511 d.rel_path = buffer_init();
1512
1513 while(NULL != (de = readdir(dir))) {
1514 if (de->d_name[0] == '.' && (de->d_name[1] == '\0' || (de->d_name[1] == '.' && de->d_name[2] == '\0'))) {
1515 continue;
1516 /* ignore the parent and target dir */
1517 }
1518
1519 buffer_copy_buffer(d.path, dst->path);
1520 buffer_append_slash(d.path);
1521
1522 buffer_copy_buffer(d.rel_path, dst->rel_path);
1523 buffer_append_slash(d.rel_path);
1524
1525 buffer_append_string(d.path, de->d_name);
1526 buffer_append_string(d.rel_path, de->d_name);
1527
1528 buffer_reset(prop_200);
1529 buffer_reset(prop_404);
1530
1531 webdav_get_props(srv, con, p, &d, req_props, prop_200, prop_404);
1532
1533 buffer_append_string_len(b,CONST_STR_LEN("<D:response>\n"));
1534 buffer_append_string_len(b,CONST_STR_LEN("<D:href>"));
1535 buffer_append_string_buffer(b, con->uri.scheme);
1536 buffer_append_string_len(b,CONST_STR_LEN("://"));
1537 buffer_append_string_buffer(b, con->uri.authority);
1538 buffer_append_string_encoded(b, CONST_BUF_LEN(d.rel_path), ENCODING_REL_URI);
1539 if (0 == stat(d.path->ptr, &st) && S_ISDIR(st.st_mode)) {
1540 /* Append a '/' on subdirectories */
1541 buffer_append_string_len(b,CONST_STR_LEN("/"));
1542 }
1543 buffer_append_string_len(b,CONST_STR_LEN("</D:href>\n"));
1544
1545 if (!buffer_string_is_empty(prop_200)) {
1546 buffer_append_string_len(b,CONST_STR_LEN("<D:propstat>\n"));
1547 buffer_append_string_len(b,CONST_STR_LEN("<D:prop>\n"));
1548
1549 buffer_append_string_buffer(b, prop_200);
1550
1551 buffer_append_string_len(b,CONST_STR_LEN("</D:prop>\n"));
1552
1553 buffer_append_string_len(b,CONST_STR_LEN("<D:status>HTTP/1.1 200 OK</D:status>\n"));
1554
1555 buffer_append_string_len(b,CONST_STR_LEN("</D:propstat>\n"));
1556 }
1557 if (!buffer_string_is_empty(prop_404)) {
1558 buffer_append_string_len(b,CONST_STR_LEN("<D:propstat>\n"));
1559 buffer_append_string_len(b,CONST_STR_LEN("<D:prop>\n"));
1560
1561 buffer_append_string_buffer(b, prop_404);
1562
1563 buffer_append_string_len(b,CONST_STR_LEN("</D:prop>\n"));
1564
1565 buffer_append_string_len(b,CONST_STR_LEN("<D:status>HTTP/1.1 404 Not Found</D:status>\n"));
1566
1567 buffer_append_string_len(b,CONST_STR_LEN("</D:propstat>\n"));
1568 }
1569
1570 buffer_append_string_len(b,CONST_STR_LEN("</D:response>\n"));
1571 }
1572 closedir(dir);
1573 buffer_free(d.path);
1574 buffer_free(d.rel_path);
1575 }
1576
1577 }
1578
1579 if (req_props) {
1580 size_t i;
1581 for (i = 0; i < req_props->used; i++) {
1582 free(req_props->ptr[i]->ns);
1583 free(req_props->ptr[i]->prop);
1584 free(req_props->ptr[i]);
1585 }
1586 free(req_props->ptr);
1587 free(req_props);
1588 }
1589
1590 buffer_free(prop_200);
1591 buffer_free(prop_404);
1592
1593 buffer_append_string_len(b,CONST_STR_LEN("</D:multistatus>\n"));
1594
1595 if (p->conf.log_xml) {
1596 log_error_write(srv, __FILE__, __LINE__, "sb", "XML-response-body:", b);
1597 }
1598
1599 chunkqueue_append_buffer(con->write_queue, b);
1600 buffer_free(b);
1601
1602 con->file_finished = 1;
1603
1604 return HANDLER_FINISHED;
1605 case HTTP_METHOD_MKCOL:
1606 if (p->conf.is_readonly) {
1607 con->http_status = 403;
1608 return HANDLER_FINISHED;
1609 }
1610
1611 if (con->request.content_length != 0) {
1612 /* we don't support MKCOL with a body */
1613 con->http_status = 415;
1614
1615 return HANDLER_FINISHED;
1616 }
1617
1618 /* let's create the directory */
1619
1620 if (-1 == mkdir(con->physical.path->ptr, WEBDAV_DIR_MODE)) {
1621 switch(errno) {
1622 case EPERM:
1623 con->http_status = 403;
1624 break;
1625 case ENOENT:
1626 case ENOTDIR:
1627 con->http_status = 409;
1628 break;
1629 case EEXIST:
1630 default:
1631 con->http_status = 405; /* not allowed */
1632 break;
1633 }
1634 } else {
1635 con->http_status = 201;
1636 con->file_finished = 1;
1637 }
1638
1639 return HANDLER_FINISHED;
1640 case HTTP_METHOD_DELETE:
1641 if (p->conf.is_readonly) {
1642 con->http_status = 403;
1643 return HANDLER_FINISHED;
1644 }
1645
1646 /* does the client have a lock for this connection ? */
1647 if (!webdav_has_lock(srv, con, p, con->uri.path)) {
1648 con->http_status = 423;
1649 return HANDLER_FINISHED;
1650 }
1651
1652 /* stat and unlink afterwards */
1653 if (-1 == stat(con->physical.path->ptr, &st)) {
1654 /* don't about it yet, unlink will fail too */
1655 switch(errno) {
1656 case ENOENT:
1657 con->http_status = 404;
1658 break;
1659 default:
1660 con->http_status = 403;
1661 break;
1662 }
1663 } else if (S_ISDIR(st.st_mode)) {
1664 buffer *multi_status_resp;
1665
1666 if (con->physical.path->ptr[buffer_string_length(con->physical.path)-1] != '/') {
1667 http_response_redirect_to_directory(srv, con);
1668 return HANDLER_FINISHED;
1669 }
1670
1671 multi_status_resp = buffer_init();
1672
1673 if (webdav_delete_dir(srv, con, p, &(con->physical), multi_status_resp)) {
1674 /* we got an error somewhere in between, build a 207 */
1675 response_header_overwrite(srv, con, CONST_STR_LEN("Content-Type"), CONST_STR_LEN("text/xml; charset=\"utf-8\""));
1676
1677 b = buffer_init();
1678
1679 buffer_copy_string_len(b, CONST_STR_LEN("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"));
1680
1681 buffer_append_string_len(b,CONST_STR_LEN("<D:multistatus xmlns:D=\"DAV:\">\n"));
1682
1683 buffer_append_string_buffer(b, multi_status_resp);
1684
1685 buffer_append_string_len(b,CONST_STR_LEN("</D:multistatus>\n"));
1686
1687 if (p->conf.log_xml) {
1688 log_error_write(srv, __FILE__, __LINE__, "sb", "XML-response-body:", b);
1689 }
1690
1691 chunkqueue_append_buffer(con->write_queue, b);
1692 buffer_free(b);
1693
1694 con->http_status = 207;
1695 con->file_finished = 1;
1696 } else {
1697 /* everything went fine, remove the directory */
1698
1699 if (-1 == rmdir(con->physical.path->ptr)) {
1700 switch(errno) {
1701 case ENOENT:
1702 con->http_status = 404;
1703 break;
1704 default:
1705 con->http_status = 501;
1706 break;
1707 }
1708 } else {
1709 con->http_status = 204;
1710 }
1711 }
1712
1713 buffer_free(multi_status_resp);
1714 } else if (-1 == unlink(con->physical.path->ptr)) {
1715 switch(errno) {
1716 case EPERM:
1717 con->http_status = 403;
1718 break;
1719 case ENOENT:
1720 con->http_status = 404;
1721 break;
1722 default:
1723 con->http_status = 501;
1724 break;
1725 }
1726 } else {
1727 con->http_status = 204;
1728 }
1729 return HANDLER_FINISHED;
1730 case HTTP_METHOD_PUT: {
1731 int fd;
1732 chunkqueue *cq = con->request_content_queue;
1733 chunk *c;
1734 data_string *ds_range;
1735
1736 if (p->conf.is_readonly) {
1737 con->http_status = 403;
1738 return HANDLER_FINISHED;
1739 }
1740
1741 /* is a exclusive lock set on the source */
1742 /* (check for lock once before potentially reading large input) */
1743 if (0 == cq->bytes_in && !webdav_has_lock(srv, con, p, con->uri.path)) {
1744 con->http_status = 423;
1745 return HANDLER_FINISHED;
1746 }
1747
1748 if (con->state == CON_STATE_READ_POST) {
1749 handler_t r = connection_handle_read_post_state(srv, con);
1750 if (r != HANDLER_GO_ON) return r;
1751 }
1752
1753 /* RFC2616 Section 9.6 PUT requires us to send 501 on all Content-* we don't support
1754 * - most important Content-Range
1755 *
1756 *
1757 * Example: Content-Range: bytes 100-1037/1038 */
1758
1759 if (NULL != (ds_range = (data_string *)array_get_element(con->request.headers, "Content-Range"))) {
1760 const char *num = ds_range->value->ptr;
1761 off_t offset;
1762 char *err = NULL;
1763
1764 if (0 != strncmp(num, "bytes ", 6)) {
1765 con->http_status = 501; /* not implemented */
1766
1767 return HANDLER_FINISHED;
1768 }
1769
1770 /* we only support <num>- ... */
1771
1772 num += 6;
1773
1774 /* skip WS */
1775 while (*num == ' ' || *num == '\t') num++;
1776
1777 if (*num == '\0') {
1778 con->http_status = 501; /* not implemented */
1779
1780 return HANDLER_FINISHED;
1781 }
1782
1783 offset = strtoll(num, &err, 10);
1784
1785 if (*err != '-' || offset < 0) {
1786 con->http_status = 501; /* not implemented */
1787
1788 return HANDLER_FINISHED;
1789 }
1790
1791 if (-1 == (fd = open(con->physical.path->ptr, O_WRONLY, WEBDAV_FILE_MODE))) {
1792 switch (errno) {
1793 case ENOENT:
1794 con->http_status = 404; /* not found */
1795 break;
1796 default:
1797 con->http_status = 403; /* not found */
1798 break;
1799 }
1800 return HANDLER_FINISHED;
1801 }
1802
1803 if (-1 == lseek(fd, offset, SEEK_SET)) {
1804 con->http_status = 501; /* not implemented */
1805
1806 close(fd);
1807
1808 return HANDLER_FINISHED;
1809 }
1810 con->http_status = 200; /* modified */
1811 } else {
1812 /* take what we have in the request-body and write it to a file */
1813
1814 /* if the file doesn't exist, create it */
1815 if (-1 == (fd = open(con->physical.path->ptr, O_WRONLY|O_TRUNC, WEBDAV_FILE_MODE))) {
1816 if (errno != ENOENT ||
1817 -1 == (fd = open(con->physical.path->ptr, O_WRONLY|O_CREAT|O_TRUNC|O_EXCL, WEBDAV_FILE_MODE))) {
1818 /* we can't open the file */
1819 con->http_status = 403;
1820
1821 return HANDLER_FINISHED;
1822 } else {
1823 con->http_status = 201; /* created */
1824 }
1825 } else {
1826 con->http_status = 200; /* modified */
1827 }
1828 }
1829
1830 con->file_finished = 1;
1831
1832 for (c = cq->first; c; c = cq->first) {
1833 int r = 0;
1834 int mapped;
1835 void *data;
1836 size_t dlen;
1837
1838 /* copy all chunks */
1839 switch(c->type) {
1840 case FILE_CHUNK:
1841
1842 mapped = (c->file.mmap.start != MAP_FAILED);
1843 dlen = c->file.length - c->offset;
1844 if (mapped) {
1845 data = c->file.mmap.start + c->offset;
1846 } else {
1847 if (-1 == c->file.fd && /* open the file if not already open */
1848 -1 == (c->file.fd = open(c->file.name->ptr, O_RDONLY))) {
1849 log_error_write(srv, __FILE__, __LINE__, "ss", "open failed: ", strerror(errno));
1850 close(fd);
1851 return HANDLER_ERROR;
1852 }
1853
1854 if (MAP_FAILED != (c->file.mmap.start = mmap(NULL, c->file.length, PROT_READ, MAP_PRIVATE, c->file.fd, 0))) {
1855 /* chunk_reset() or chunk_free() will cleanup for us */
1856 c->file.mmap.length = c->file.length;
1857 data = c->file.mmap.start + c->offset;
1858 mapped = 1;
1859 } else {
1860 ssize_t rd;
1861 if (dlen > 65536) dlen = 65536;
1862 data = malloc(dlen);
1863 force_assert(data);
1864 if (-1 == lseek(c->file.fd, c->file.start + c->offset, SEEK_SET)
1865 || 0 > (rd = read(c->file.fd, data, dlen))) {
1866 log_error_write(srv, __FILE__, __LINE__, "ssbd", "lseek/read failed: ",
1867 strerror(errno), c->file.name, c->file.fd);
1868 free(data);
1869 close(fd);
1870 return HANDLER_ERROR;
1871 }
1872 dlen = (size_t)rd;
1873 }
1874
1875 }
1876
1877 if ((r = write(fd, data, dlen)) < 0) {
1878 switch(errno) {
1879 case ENOSPC:
1880 con->http_status = 507;
1881
1882 break;
1883 default:
1884 con->http_status = 403;
1885 break;
1886 }
1887 }
1888
1889 if (!mapped) free(data);
1890 break;
1891 case MEM_CHUNK:
1892 if ((r = write(fd, c->mem->ptr + c->offset, buffer_string_length(c->mem) - c->offset)) < 0) {
1893 switch(errno) {
1894 case ENOSPC:
1895 con->http_status = 507;
1896
1897 break;
1898 default:
1899 con->http_status = 403;
1900 break;
1901 }
1902 }
1903 break;
1904 }
1905
1906 if (r > 0) {
1907 chunkqueue_mark_written(cq, r);
1908 } else {
1909 break;
1910 }
1911 }
1912 if (0 != close(fd)) {
1913 log_error_write(srv, __FILE__, __LINE__, "sbss",
1914 "close ", con->physical.path, "failed: ", strerror(errno));
1915 return HANDLER_ERROR;
1916 }
1917
1918 return HANDLER_FINISHED;
1919 }
1920 case HTTP_METHOD_MOVE:
1921 case HTTP_METHOD_COPY: {
1922 buffer *destination = NULL;
1923 char *sep, *sep2, *start;
1924 int overwrite = 1;
1925
1926 if (p->conf.is_readonly) {
1927 con->http_status = 403;
1928 return HANDLER_FINISHED;
1929 }
1930
1931 /* is a exclusive lock set on the source */
1932 if (con->request.http_method == HTTP_METHOD_MOVE) {
1933 if (!webdav_has_lock(srv, con, p, con->uri.path)) {
1934 con->http_status = 423;
1935 return HANDLER_FINISHED;
1936 }
1937 }
1938
1939 if (NULL != (ds = (data_string *)array_get_element(con->request.headers, "Destination"))) {
1940 destination = ds->value;
1941 } else {
1942 con->http_status = 400;
1943 return HANDLER_FINISHED;
1944 }
1945
1946 if (NULL != (ds = (data_string *)array_get_element(con->request.headers, "Overwrite"))) {
1947 if (buffer_string_length(ds->value) != 1 ||
1948 (ds->value->ptr[0] != 'F' &&
1949 ds->value->ptr[0] != 'T') ) {
1950 con->http_status = 400;
1951 return HANDLER_FINISHED;
1952 }
1953 overwrite = (ds->value->ptr[0] == 'F' ? 0 : 1);
1954 }
1955 /* let's parse the Destination
1956 *
1957 * http://127.0.0.1:1025/dav/litmus/copydest
1958 *
1959 * - host has to be the same as the Host: header we got
1960 * - we have to stay inside the document root
1961 * - the query string is thrown away
1962 * */
1963
1964 buffer_reset(p->uri.scheme);
1965 buffer_reset(p->uri.path_raw);
1966 buffer_reset(p->uri.authority);
1967
1968 start = destination->ptr;
1969
1970 if (NULL == (sep = strstr(start, "://"))) {
1971 con->http_status = 400;
1972 return HANDLER_FINISHED;
1973 }
1974 buffer_copy_string_len(p->uri.scheme, start, sep - start);
1975
1976 start = sep + 3;
1977
1978 if (NULL == (sep = strchr(start, '/'))) {
1979 con->http_status = 400;
1980 return HANDLER_FINISHED;
1981 }
1982 if (NULL != (sep2 = memchr(start, '@', sep - start))) {
1983 /* skip login information */
1984 start = sep2 + 1;
1985 }
1986 buffer_copy_string_len(p->uri.authority, start, sep - start);
1987
1988 start = sep + 1;
1989
1990 if (NULL == (sep = strchr(start, '?'))) {
1991 /* no query string, good */
1992 buffer_copy_string(p->uri.path_raw, start);
1993 } else {
1994 buffer_copy_string_len(p->uri.path_raw, start, sep - start);
1995 }
1996
1997 if (!buffer_is_equal(p->uri.authority, con->uri.authority)) {
1998 /* not the same host */
1999 con->http_status = 502;
2000 return HANDLER_FINISHED;
2001 }
2002
2003 buffer_copy_buffer(p->tmp_buf, p->uri.path_raw);
2004 buffer_urldecode_path(p->tmp_buf);
2005 buffer_path_simplify(p->uri.path, p->tmp_buf);
2006
2007 /* we now have a URI which is clean. transform it into a physical path */
2008 buffer_copy_buffer(p->physical.doc_root, con->physical.doc_root);
2009 buffer_copy_buffer(p->physical.rel_path, p->uri.path);
2010
2011 if (con->conf.force_lowercase_filenames) {
2012 buffer_to_lower(p->physical.rel_path);
2013 }
2014
2015 /* Destination physical path
2016 * src con->physical.path might have been remapped with mod_alias.
2017 * (but mod_alias does not modify con->physical.rel_path)
2018 * Find matching prefix to support use of mod_alias to remap webdav root.
2019 * Aliasing of paths underneath the webdav root might not work.
2020 * Likewise, mod_rewrite URL rewriting might thwart this comparison.
2021 * Use mod_redirect instead of mod_alias to remap paths *under* webdav root.
2022 * Use mod_redirect instead of mod_rewrite on *any* parts of path to webdav.
2023 * (Related, use mod_auth to protect webdav root, but avoid attempting to
2024 * use mod_auth on paths underneath webdav root, as Destination is not
2025 * validated with mod_auth)
2026 *
2027 * tl;dr: webdav paths and webdav properties are managed by mod_webdav,
2028 * so do not modify paths externally or else undefined behavior
2029 * or corruption may occur
2030 */
2031 {
2032 /* find matching URI prefix
2033 * check if remaining con->physical.rel_path matches suffix
2034 * of con->physical.basedir so that we can use it to
2035 * remap Destination physical path */
2036 size_t i, remain;
2037 sep = con->uri.path->ptr;
2038 sep2 = p->uri.path->ptr;
2039 for (i = 0; sep[i] && sep[i] == sep2[i]; ++i) ;
2040 if (sep[i] == '\0' && (sep2[i] == '\0' || sep2[i] == '/' || (i > 0 && sep[i-1] == '/'))) {
2041 /* src and dst URI match or dst is nested inside src; invalid COPY or MOVE */
2042 con->http_status = 403;
2043 return HANDLER_FINISHED;
2044 }
2045 while (i != 0 && sep[--i] != '/') ; /* find matching directory path */
2046 remain = buffer_string_length(con->uri.path) - i;
2047 if (!con->conf.force_lowercase_filenames
2048 ? buffer_is_equal_right_len(con->physical.path, con->physical.rel_path, remain)
2049 :(buffer_string_length(con->physical.path) >= remain
2050 && 0 == strncasecmp(con->physical.path->ptr+buffer_string_length(con->physical.path)-remain, con->physical.rel_path->ptr+i, remain))) {
2051 /* (at this point, p->physical.rel_path is identical to (or lowercased version of) p->uri.path) */
2052 buffer_copy_string_len(p->physical.path, con->physical.path->ptr, buffer_string_length(con->physical.path)-remain);
2053 buffer_append_string_len(p->physical.path, p->physical.rel_path->ptr+i, buffer_string_length(p->physical.rel_path)-i);
2054
2055 buffer_copy_buffer(p->physical.basedir, con->physical.basedir);
2056 buffer_append_slash(p->physical.basedir);
2057 } else {
2058 /* unable to perform physical path remap here;
2059 * assume doc_root/rel_path and no remapping */
2060 buffer_copy_buffer(p->physical.path, p->physical.doc_root);
2061 buffer_append_slash(p->physical.path);
2062 buffer_copy_buffer(p->physical.basedir, p->physical.path);
2063
2064 /* don't add a second / */
2065 if (p->physical.rel_path->ptr[0] == '/') {
2066 buffer_append_string_len(p->physical.path, p->physical.rel_path->ptr + 1, buffer_string_length(p->physical.rel_path) - 1);
2067 } else {
2068 buffer_append_string_buffer(p->physical.path, p->physical.rel_path);
2069 }
2070 }
2071 }
2072
2073 /* let's see if the source is a directory
2074 * if yes, we fail with 501 */
2075
2076 if (-1 == stat(con->physical.path->ptr, &st)) {
2077 /* don't about it yet, unlink will fail too */
2078 switch(errno) {
2079 case ENOENT:
2080 con->http_status = 404;
2081 break;
2082 default:
2083 con->http_status = 403;
2084 break;
2085 }
2086 } else if (S_ISDIR(st.st_mode)) {
2087 int r;
2088 int created = 0;
2089 /* src is a directory */
2090
2091 if (con->physical.path->ptr[buffer_string_length(con->physical.path)-1] != '/') {
2092 http_response_redirect_to_directory(srv, con);
2093 return HANDLER_FINISHED;
2094 }
2095
2096 if (-1 == stat(p->physical.path->ptr, &st)) {
2097 if (-1 == mkdir(p->physical.path->ptr, WEBDAV_DIR_MODE)) {
2098 con->http_status = 403;
2099 return HANDLER_FINISHED;
2100 }
2101 created = 1;
2102 } else if (!S_ISDIR(st.st_mode)) {
2103 if (overwrite == 0) {
2104 /* copying into a non-dir ? */
2105 con->http_status = 409;
2106 return HANDLER_FINISHED;
2107 } else {
2108 unlink(p->physical.path->ptr);
2109 if (-1 == mkdir(p->physical.path->ptr, WEBDAV_DIR_MODE)) {
2110 con->http_status = 403;
2111 return HANDLER_FINISHED;
2112 }
2113 created = 1;
2114 }
2115 }
2116
2117 /* copy the content of src to dest */
2118 if (0 != (r = webdav_copy_dir(srv, con, p, &(con->physical), &(p->physical), overwrite))) {
2119 con->http_status = r;
2120 return HANDLER_FINISHED;
2121 }
2122 if (con->request.http_method == HTTP_METHOD_MOVE) {
2123 b = buffer_init();
2124 webdav_delete_dir(srv, con, p, &(con->physical), b); /* content */
2125 buffer_free(b);
2126
2127 rmdir(con->physical.path->ptr);
2128 }
2129 con->http_status = created ? 201 : 204;
2130 con->file_finished = 1;
2131 } else {
2132 /* it is just a file, good */
2133 int r;
2134 int destdir = 0;
2135
2136 /* does the client have a lock for this connection ? */
2137 if (!webdav_has_lock(srv, con, p, p->uri.path)) {
2138 con->http_status = 423;
2139 return HANDLER_FINISHED;
2140 }
2141
2142 /* destination exists */
2143 if (0 == (r = stat(p->physical.path->ptr, &st))) {
2144 if (S_ISDIR(st.st_mode)) {
2145 /* file to dir/
2146 * append basename to physical path */
2147 destdir = 1;
2148
2149 if (NULL != (sep = strrchr(con->physical.path->ptr, '/'))) {
2150 buffer_append_string(p->physical.path, sep);
2151 r = stat(p->physical.path->ptr, &st);
2152 }
2153 }
2154 }
2155
2156 if (-1 == r) {
2157 con->http_status = destdir ? 204 : 201; /* we will create a new one */
2158 con->file_finished = 1;
2159
2160 switch(errno) {
2161 case ENOTDIR:
2162 con->http_status = 409;
2163 return HANDLER_FINISHED;
2164 }
2165 } else if (overwrite == 0) {
2166 /* destination exists, but overwrite is not set */
2167 con->http_status = 412;
2168 return HANDLER_FINISHED;
2169 } else {
2170 con->http_status = 204; /* resource already existed */
2171 }
2172
2173 if (con->request.http_method == HTTP_METHOD_MOVE) {
2174 /* try a rename */
2175
2176 if (0 == rename(con->physical.path->ptr, p->physical.path->ptr)) {
2177 #ifdef USE_PROPPATCH
2178 sqlite3_stmt *stmt;
2179
2180 stmt = p->conf.stmt_move_uri;
2181 if (stmt) {
2182
2183 sqlite3_reset(stmt);
2184
2185 /* bind the values to the insert */
2186 sqlite3_bind_text(stmt, 1,
2187 CONST_BUF_LEN(p->uri.path),
2188 SQLITE_TRANSIENT);
2189
2190 sqlite3_bind_text(stmt, 2,
2191 CONST_BUF_LEN(con->uri.path),
2192 SQLITE_TRANSIENT);
2193
2194 if (SQLITE_DONE != sqlite3_step(stmt)) {
2195 log_error_write(srv, __FILE__, __LINE__, "ss", "sql-move failed:", sqlite3_errmsg(p->conf.sql));
2196 }
2197 }
2198 #endif
2199 return HANDLER_FINISHED;
2200 }
2201
2202 /* rename failed, fall back to COPY + DELETE */
2203 }
2204
2205 if (0 != (r = webdav_copy_file(srv, con, p, &(con->physical), &(p->physical), overwrite))) {
2206 con->http_status = r;
2207
2208 return HANDLER_FINISHED;
2209 }
2210
2211 if (con->request.http_method == HTTP_METHOD_MOVE) {
2212 b = buffer_init();
2213 webdav_delete_file(srv, con, p, &(con->physical), b);
2214 buffer_free(b);
2215 }
2216 }
2217
2218 return HANDLER_FINISHED;
2219 }
2220 case HTTP_METHOD_PROPPATCH:
2221 if (p->conf.is_readonly) {
2222 con->http_status = 403;
2223 return HANDLER_FINISHED;
2224 }
2225
2226 if (!webdav_has_lock(srv, con, p, con->uri.path)) {
2227 con->http_status = 423;
2228 return HANDLER_FINISHED;
2229 }
2230
2231 /* check if destination exists */
2232 if (-1 == stat(con->physical.path->ptr, &st)) {
2233 switch(errno) {
2234 case ENOENT:
2235 con->http_status = 404;
2236 break;
2237 }
2238 }
2239
2240 if (S_ISDIR(st.st_mode) && con->physical.path->ptr[buffer_string_length(con->physical.path)-1] != '/') {
2241 http_response_redirect_to_directory(srv, con);
2242 return HANDLER_FINISHED;
2243 }
2244
2245 #ifdef USE_PROPPATCH
2246 if (con->request.content_length) {
2247 xmlDocPtr xml;
2248
2249 if (con->state == CON_STATE_READ_POST) {
2250 handler_t r = connection_handle_read_post_state(srv, con);
2251 if (r != HANDLER_GO_ON) return r;
2252 }
2253
2254 if (1 == webdav_parse_chunkqueue(srv, con, p, con->request_content_queue, &xml)) {
2255 xmlNode *rootnode = xmlDocGetRootElement(xml);
2256
2257 if (0 == xmlStrcmp(rootnode->name, BAD_CAST "propertyupdate")) {
2258 xmlNode *cmd;
2259 char *err = NULL;
2260 int empty_ns = 0; /* send 400 on a empty namespace attribute */
2261
2262 /* start response */
2263
2264 if (SQLITE_OK != sqlite3_exec(p->conf.sql, "BEGIN TRANSACTION", NULL, NULL, &err)) {
2265 log_error_write(srv, __FILE__, __LINE__, "ss", "can't open transaction:", err);
2266 sqlite3_free(err);
2267
2268 goto propmatch_cleanup;
2269 }
2270
2271 /* a UPDATE request, we know 'set' and 'remove' */
2272 for (cmd = rootnode->children; cmd; cmd = cmd->next) {
2273 xmlNode *props;
2274 /* either set or remove */
2275
2276 if ((0 == xmlStrcmp(cmd->name, BAD_CAST "set")) ||
2277 (0 == xmlStrcmp(cmd->name, BAD_CAST "remove"))) {
2278
2279 sqlite3_stmt *stmt;
2280
2281 stmt = (0 == xmlStrcmp(cmd->name, BAD_CAST "remove")) ?
2282 p->conf.stmt_delete_prop : p->conf.stmt_update_prop;
2283
2284 for (props = cmd->children; props; props = props->next) {
2285 if (0 == xmlStrcmp(props->name, BAD_CAST "prop")) {
2286 xmlNode *prop;
2287 char *propval = NULL;
2288 int r;
2289
2290 prop = props->children;
2291
2292 if (prop->ns &&
2293 (0 == xmlStrcmp(prop->ns->href, BAD_CAST "")) &&
2294 (0 != xmlStrcmp(prop->ns->prefix, BAD_CAST ""))) {
2295 log_error_write(srv, __FILE__, __LINE__, "ss",
2296 "no name space for:",
2297 prop->name);
2298
2299 empty_ns = 1;
2300 break;
2301 }
2302
2303 sqlite3_reset(stmt);
2304
2305 /* bind the values to the insert */
2306
2307 sqlite3_bind_text(stmt, 1,
2308 CONST_BUF_LEN(con->uri.path),
2309 SQLITE_TRANSIENT);
2310 sqlite3_bind_text(stmt, 2,
2311 (char *)prop->name,
2312 strlen((char *)prop->name),
2313 SQLITE_TRANSIENT);
2314 if (prop->ns) {
2315 sqlite3_bind_text(stmt, 3,
2316 (char *)prop->ns->href,
2317 strlen((char *)prop->ns->href),
2318 SQLITE_TRANSIENT);
2319 } else {
2320 sqlite3_bind_text(stmt, 3,
2321 "",
2322 0,
2323 SQLITE_TRANSIENT);
2324 }
2325 if (stmt == p->conf.stmt_update_prop) {
2326 propval = prop->children
2327 ? (char *)xmlNodeListGetString(xml, prop->children, 0)
2328 : NULL;
2329
2330 sqlite3_bind_text(stmt, 4,
2331 propval ? propval : "",
2332 propval ? strlen(propval) : 0,
2333 SQLITE_TRANSIENT);
2334 }
2335
2336 if (SQLITE_DONE != (r = sqlite3_step(stmt))) {
2337 log_error_write(srv, __FILE__, __LINE__, "ss",
2338 "sql-set failed:", sqlite3_errmsg(p->conf.sql));
2339 }
2340
2341 if (propval) xmlFree(propval);
2342 }
2343 }
2344 if (empty_ns) break;
2345 }
2346 }
2347
2348 if (empty_ns) {
2349 if (SQLITE_OK != sqlite3_exec(p->conf.sql, "ROLLBACK", NULL, NULL, &err)) {
2350 log_error_write(srv, __FILE__, __LINE__, "ss", "can't rollback transaction:", err);
2351 sqlite3_free(err);
2352
2353 goto propmatch_cleanup;
2354 }
2355
2356 con->http_status = 400;
2357 } else {
2358 if (SQLITE_OK != sqlite3_exec(p->conf.sql, "COMMIT", NULL, NULL, &err)) {
2359 log_error_write(srv, __FILE__, __LINE__, "ss", "can't commit transaction:", err);
2360 sqlite3_free(err);
2361
2362 goto propmatch_cleanup;
2363 }
2364 con->http_status = 200;
2365 }
2366 con->file_finished = 1;
2367
2368 return HANDLER_FINISHED;
2369 }
2370
2371 propmatch_cleanup:
2372
2373 xmlFreeDoc(xml);
2374 } else {
2375 con->http_status = 400;
2376 return HANDLER_FINISHED;
2377 }
2378 }
2379 #endif
2380 con->http_status = 501;
2381 return HANDLER_FINISHED;
2382 case HTTP_METHOD_LOCK:
2383 /**
2384 * a mac wants to write
2385 *
2386 * LOCK /dav/expire.txt HTTP/1.1\r\n
2387 * User-Agent: WebDAVFS/1.3 (01308000) Darwin/8.1.0 (Power Macintosh)\r\n
2388 * Accept: * / *\r\n
2389 * Depth: 0\r\n
2390 * Timeout: Second-600\r\n
2391 * Content-Type: text/xml; charset=\"utf-8\"\r\n
2392 * Content-Length: 229\r\n
2393 * Connection: keep-alive\r\n
2394 * Host: 192.168.178.23:1025\r\n
2395 * \r\n
2396 * <?xml version=\"1.0\" encoding=\"utf-8\"?>\n
2397 * <D:lockinfo xmlns:D=\"DAV:\">\n
2398 * <D:lockscope><D:exclusive/></D:lockscope>\n
2399 * <D:locktype><D:write/></D:locktype>\n
2400 * <D:owner>\n
2401 * <D:href>http://www.apple.com/webdav_fs/</D:href>\n
2402 * </D:owner>\n
2403 * </D:lockinfo>\n
2404 */
2405
2406 if (depth != 0 && depth != -1) {
2407 con->http_status = 400;
2408
2409 return HANDLER_FINISHED;
2410 }
2411
2412 #ifdef USE_LOCKS
2413 if (con->request.content_length) {
2414 xmlDocPtr xml;
2415 buffer *hdr_if = NULL;
2416 int created = 0;
2417
2418 if (con->state == CON_STATE_READ_POST) {
2419 handler_t r = connection_handle_read_post_state(srv, con);
2420 if (r != HANDLER_GO_ON) return r;
2421 }
2422
2423 if (NULL != (ds = (data_string *)array_get_element(con->request.headers, "If"))) {
2424 hdr_if = ds->value;
2425 }
2426
2427 if (0 != stat(con->physical.path->ptr, &st)) {
2428 if (errno == ENOENT) {
2429 int fd = open(con->physical.path->ptr, O_WRONLY|O_CREAT|O_APPEND|O_BINARY|FIFO_NONBLOCK, WEBDAV_FILE_MODE);
2430 if (fd >= 0) {
2431 close(fd);
2432 created = 1;
2433 } else {
2434 log_error_write(srv, __FILE__, __LINE__, "sBss",
2435 "create file", con->physical.path, ":", strerror(errno));
2436 con->http_status = 403; /* Forbidden */
2437
2438 return HANDLER_FINISHED;
2439 }
2440 }
2441 } else if (hdr_if == NULL && depth == -1) {
2442 /* we don't support Depth: Infinity on directories */
2443 if (S_ISDIR(st.st_mode)) {
2444 con->http_status = 409; /* Conflict */
2445
2446 return HANDLER_FINISHED;
2447 }
2448 }
2449
2450 if (1 == webdav_parse_chunkqueue(srv, con, p, con->request_content_queue, &xml)) {
2451 xmlNode *rootnode = xmlDocGetRootElement(xml);
2452
2453 force_assert(rootnode);
2454
2455 if (0 == xmlStrcmp(rootnode->name, BAD_CAST "lockinfo")) {
2456 xmlNode *lockinfo;
2457 const xmlChar *lockscope = NULL, *locktype = NULL; /* TODO: compiler says unused: *owner = NULL; */
2458
2459 for (lockinfo = rootnode->children; lockinfo; lockinfo = lockinfo->next) {
2460 if (0 == xmlStrcmp(lockinfo->name, BAD_CAST "lockscope")) {
2461 xmlNode *value;
2462 for (value = lockinfo->children; value; value = value->next) {
2463 if ((0 == xmlStrcmp(value->name, BAD_CAST "exclusive")) ||
2464 (0 == xmlStrcmp(value->name, BAD_CAST "shared"))) {
2465 lockscope = value->name;
2466 } else {
2467 con->http_status = 400;
2468
2469 xmlFreeDoc(xml);
2470 return HANDLER_FINISHED;
2471 }
2472 }
2473 } else if (0 == xmlStrcmp(lockinfo->name, BAD_CAST "locktype")) {
2474 xmlNode *value;
2475 for (value = lockinfo->children; value; value = value->next) {
2476 if ((0 == xmlStrcmp(value->name, BAD_CAST "write"))) {
2477 locktype = value->name;
2478 } else {
2479 con->http_status = 400;
2480
2481 xmlFreeDoc(xml);
2482 return HANDLER_FINISHED;
2483 }
2484 }
2485
2486 } else if (0 == xmlStrcmp(lockinfo->name, BAD_CAST "owner")) {
2487 }
2488 }
2489
2490 if (lockscope && locktype) {
2491 sqlite3_stmt *stmt = p->conf.stmt_read_lock_by_uri;
2492
2493 /* is this resourse already locked ? */
2494
2495 /* SELECT locktoken, resource, lockscope, locktype, owner, depth, timeout
2496 * FROM locks
2497 * WHERE resource = ? */
2498
2499 if (stmt) {
2500
2501 sqlite3_reset(stmt);
2502
2503 sqlite3_bind_text(stmt, 1,
2504 CONST_BUF_LEN(p->uri.path),
2505 SQLITE_TRANSIENT);
2506
2507 /* it is the PK */
2508 while (SQLITE_ROW == sqlite3_step(stmt)) {
2509 /* we found a lock
2510 * 1. is it compatible ?
2511 * 2. is it ours */
2512 char *sql_lockscope = (char *)sqlite3_column_text(stmt, 2);
2513
2514 if (strcmp(sql_lockscope, "exclusive")) {
2515 con->http_status = 423;
2516 } else if (0 == xmlStrcmp(lockscope, BAD_CAST "exclusive")) {
2517 /* resourse is locked with a shared lock
2518 * client wants exclusive */
2519 con->http_status = 423;
2520 }
2521 }
2522 if (con->http_status == 423) {
2523 xmlFreeDoc(xml);
2524 return HANDLER_FINISHED;
2525 }
2526 }
2527
2528 stmt = p->conf.stmt_create_lock;
2529 if (stmt) {
2530 /* create a lock-token */
2531 uuid_t id;
2532 char uuid[37] /* 36 + \0 */;
2533
2534 uuid_generate(id);
2535 uuid_unparse(id, uuid);
2536
2537 buffer_copy_string_len(p->tmp_buf, CONST_STR_LEN("opaquelocktoken:"));
2538 buffer_append_string(p->tmp_buf, uuid);
2539
2540 /* "CREATE TABLE locks ("
2541 * " locktoken TEXT NOT NULL,"
2542 * " resource TEXT NOT NULL,"
2543 * " lockscope TEXT NOT NULL,"
2544 * " locktype TEXT NOT NULL,"
2545 * " owner TEXT NOT NULL,"
2546 * " depth INT NOT NULL,"
2547 */
2548
2549 sqlite3_reset(stmt);
2550
2551 sqlite3_bind_text(stmt, 1,
2552 CONST_BUF_LEN(p->tmp_buf),
2553 SQLITE_TRANSIENT);
2554
2555 sqlite3_bind_text(stmt, 2,
2556 CONST_BUF_LEN(con->uri.path),
2557 SQLITE_TRANSIENT);
2558
2559 sqlite3_bind_text(stmt, 3,
2560 (const char *)lockscope,
2561 xmlStrlen(lockscope),
2562 SQLITE_TRANSIENT);
2563
2564 sqlite3_bind_text(stmt, 4,
2565 (const char *)locktype,
2566 xmlStrlen(locktype),
2567 SQLITE_TRANSIENT);
2568
2569 /* owner */
2570 sqlite3_bind_text(stmt, 5,
2571 "",
2572 0,
2573 SQLITE_TRANSIENT);
2574
2575 /* depth */
2576 sqlite3_bind_int(stmt, 6,
2577 depth);
2578
2579
2580 if (SQLITE_DONE != sqlite3_step(stmt)) {
2581 log_error_write(srv, __FILE__, __LINE__, "ss",
2582 "create lock:", sqlite3_errmsg(p->conf.sql));
2583 }
2584
2585 /* looks like we survived */
2586 webdav_lockdiscovery(srv, con, p->tmp_buf, (const char *)lockscope, (const char *)locktype, depth);
2587
2588 con->http_status = created ? 201 : 200;
2589 con->file_finished = 1;
2590 }
2591 }
2592 }
2593
2594 xmlFreeDoc(xml);
2595 return HANDLER_FINISHED;
2596 } else {
2597 con->http_status = 400;
2598 return HANDLER_FINISHED;
2599 }
2600 } else {
2601
2602 if (NULL != (ds = (data_string *)array_get_element(con->request.headers, "If"))) {
2603 buffer *locktoken = ds->value;
2604 sqlite3_stmt *stmt = p->conf.stmt_refresh_lock;
2605
2606 /* remove the < > around the token */
2607 if (buffer_string_length(locktoken) < 5) {
2608 con->http_status = 400;
2609
2610 return HANDLER_FINISHED;
2611 }
2612
2613 buffer_copy_string_len(p->tmp_buf, locktoken->ptr + 2, buffer_string_length(locktoken) - 4);
2614
2615 sqlite3_reset(stmt);
2616
2617 sqlite3_bind_text(stmt, 1,
2618 CONST_BUF_LEN(p->tmp_buf),
2619 SQLITE_TRANSIENT);
2620
2621 if (SQLITE_DONE != sqlite3_step(stmt)) {
2622 log_error_write(srv, __FILE__, __LINE__, "ss",
2623 "refresh lock:", sqlite3_errmsg(p->conf.sql));
2624 }
2625
2626 webdav_lockdiscovery(srv, con, p->tmp_buf, "exclusive", "write", 0);
2627
2628 con->http_status = 200;
2629 con->file_finished = 1;
2630 return HANDLER_FINISHED;
2631 } else {
2632 /* we need a lock-token to refresh */
2633 con->http_status = 400;
2634
2635 return HANDLER_FINISHED;
2636 }
2637 }
2638 break;
2639 #else
2640 con->http_status = 501;
2641 return HANDLER_FINISHED;
2642 #endif
2643 case HTTP_METHOD_UNLOCK:
2644 #ifdef USE_LOCKS
2645 if (NULL != (ds = (data_string *)array_get_element(con->request.headers, "Lock-Token"))) {
2646 buffer *locktoken = ds->value;
2647 sqlite3_stmt *stmt = p->conf.stmt_remove_lock;
2648
2649 /* remove the < > around the token */
2650 if (buffer_string_length(locktoken) < 3) {
2651 con->http_status = 400;
2652
2653 return HANDLER_FINISHED;
2654 }
2655
2656 /**
2657 * FIXME:
2658 *
2659 * if the resourse is locked:
2660 * - by us: unlock
2661 * - by someone else: 401
2662 * if the resource is not locked:
2663 * - 412
2664 * */
2665
2666 buffer_copy_string_len(p->tmp_buf, locktoken->ptr + 1, buffer_string_length(locktoken) - 2);
2667
2668 sqlite3_reset(stmt);
2669
2670 sqlite3_bind_text(stmt, 1,
2671 CONST_BUF_LEN(p->tmp_buf),
2672 SQLITE_TRANSIENT);
2673
2674 sqlite3_bind_text(stmt, 2,
2675 CONST_BUF_LEN(con->uri.path),
2676 SQLITE_TRANSIENT);
2677
2678 if (SQLITE_DONE != sqlite3_step(stmt)) {
2679 log_error_write(srv, __FILE__, __LINE__, "ss",
2680 "remove lock:", sqlite3_errmsg(p->conf.sql));
2681 }
2682
2683 if (0 == sqlite3_changes(p->conf.sql)) {
2684 con->http_status = 401;
2685 } else {
2686 con->http_status = 204;
2687 }
2688 return HANDLER_FINISHED;
2689 } else {
2690 /* we need a lock-token to unlock */
2691 con->http_status = 400;
2692
2693 return HANDLER_FINISHED;
2694 }
2695 break;
2696 #else
2697 con->http_status = 501;
2698 return HANDLER_FINISHED;
2699 #endif
2700 default:
2701 break;
2702 }
2703
2704 /* not found */
2705 return HANDLER_GO_ON;
2706 }
2707
2708
2709 SUBREQUEST_FUNC(mod_webdav_subrequest_handler) {
2710 handler_t r;
2711 plugin_data *p = p_d;
2712 if (con->mode != p->id) return HANDLER_GO_ON;
2713
2714 r = mod_webdav_subrequest_handler_huge(srv, con, p_d);
2715 if (con->http_status >= 400) con->mode = DIRECT;
2716 return r;
2717 }
2718
2719
2720 PHYSICALPATH_FUNC(mod_webdav_physical_handler) {
2721 plugin_data *p = p_d;
2722 if (!p->conf.enabled) return HANDLER_GO_ON;
2723
2724 /* physical path is setup */
2725 if (buffer_is_empty(con->physical.path)) return HANDLER_GO_ON;
2726
2727 UNUSED(srv);
2728
2729 switch (con->request.http_method) {
2730 case HTTP_METHOD_PROPFIND:
2731 case HTTP_METHOD_PROPPATCH:
2732 case HTTP_METHOD_PUT:
2733 case HTTP_METHOD_COPY:
2734 case HTTP_METHOD_MOVE:
2735 case HTTP_METHOD_MKCOL:
2736 case HTTP_METHOD_DELETE:
2737 case HTTP_METHOD_LOCK:
2738 case HTTP_METHOD_UNLOCK:
2739 con->conf.stream_request_body = 0;
2740 con->mode = p->id;
2741 break;
2742 default:
2743 break;
2744 }
2745
2746 return HANDLER_GO_ON;
2747 }
2748
2749
2750 /* this function is called at dlopen() time and inits the callbacks */
2751
2752 int mod_webdav_plugin_init(plugin *p);
2753 int mod_webdav_plugin_init(plugin *p) {
2754 p->version = LIGHTTPD_VERSION_ID;
2755 p->name = buffer_init_string("webdav");
2756
2757 p->init = mod_webdav_init;
2758 p->handle_uri_clean = mod_webdav_uri_handler;
2759 p->handle_physical = mod_webdav_physical_handler;
2760 p->handle_subrequest = mod_webdav_subrequest_handler;
2761 p->set_defaults = mod_webdav_set_defaults;
2762 p->cleanup = mod_webdav_free;
2763
2764 p->data = NULL;
2765
2766 return 0;
2767 }
A fast webserver with minimal memory-footprint (lighttpd)