-
Notifications
You must be signed in to change notification settings - Fork 9
/
Copy pathpdownload.c
1207 lines (1158 loc) · 44.6 KB
/
pdownload.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/* Copyright (c) 2013 Anton Titov.
* Copyright (c) 2013 pCloud Ltd.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of pCloud Ltd nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL pCloud Ltd BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "pdownload.h"
#include "pstatus.h"
#include "ptimer.h"
#include "plibs.h"
#include "ptasks.h"
#include "pstatus.h"
#include "pssl.h"
#include "psettings.h"
#include "pnetlibs.h"
#include "pcallbacks.h"
#include "pfolder.h"
#include "psyncer.h"
#include "papi.h"
#include "pp2p.h"
#include "plist.h"
#include "plocalscan.h"
#include "pupload.h"
typedef struct {
psync_list list;
psync_fileid_t fileid;
psync_syncid_t syncid;
int stop;
unsigned char hash[PSYNC_HASH_DIGEST_HEXLEN];
} download_list_t;
typedef struct {
uint64_t taskid;
download_list_t dwllist;
psync_folderid_t localfolderid;
char filename[];
} download_task_t;
static pthread_mutex_t download_mutex=PTHREAD_MUTEX_INITIALIZER;
static pthread_cond_t download_cond=PTHREAD_COND_INITIALIZER;
static psync_uint_t download_wakes=0;
static const uint32_t requiredstatuses[]={
PSTATUS_COMBINE(PSTATUS_TYPE_AUTH, PSTATUS_AUTH_PROVIDED),
PSTATUS_COMBINE(PSTATUS_TYPE_RUN, PSTATUS_RUN_RUN),
PSTATUS_COMBINE(PSTATUS_TYPE_ONLINE, PSTATUS_ONLINE_ONLINE)
};
static psync_uint_t started_downloads=0;
static psync_uint_t starting_downloads=0;
static psync_uint_t current_downloads_waiters=0;
static pthread_mutex_t current_downloads_mutex=PTHREAD_MUTEX_INITIALIZER;
static pthread_cond_t current_downloads_cond=PTHREAD_COND_INITIALIZER;
static psync_list downloads=PSYNC_LIST_STATIC_INIT(downloads);
static void task_wait_no_downloads(){
pthread_mutex_lock(¤t_downloads_mutex);
while (starting_downloads || started_downloads){
current_downloads_waiters++;
pthread_cond_wait(¤t_downloads_cond, ¤t_downloads_mutex);
current_downloads_waiters--;
}
pthread_mutex_unlock(¤t_downloads_mutex);
}
static int task_mkdir(const char *path){
int err;
while (1){
if (likely(!psync_mkdir(path))){ // don't change to likely_log, as it may overwrite psync_fs_err;
psync_set_local_full(0);
return 0;
}
err=psync_fs_err();
debug(D_WARNING, "mkdir of %s failed, errno=%d", path, (int)err);
if (err==P_NOSPC || err==P_DQUOT){
psync_set_local_full(1);
psync_milisleep(PSYNC_SLEEP_ON_DISK_FULL);
}
else {
psync_set_local_full(0);
if (err==P_NOENT)
return 0; // do we have a choice? the user deleted the directory
else if (err==P_EXIST){
psync_stat_t st;
if (psync_stat(path, &st)){
debug(D_BUG, "mkdir failed with EEXIST, but stat returned error. race?");
return -1;
}
if (psync_stat_isfolder(&st))
return 0;
if (psync_rename_conflicted_file(path))
return -1;
}
else
return -1;
}
psync_wait_statuses_array(requiredstatuses, ARRAY_SIZE(requiredstatuses));
}
}
static int task_rmdir(const char *path){
task_wait_no_downloads();
if (likely_log(!psync_rmdir_with_trashes(path)))
return 0;
if (psync_fs_err()==P_BUSY || psync_fs_err()==P_ROFS)
return -1;
psync_wake_localscan();
return 0;
// if (psync_fs_err()==P_NOENT || psync_fs_err()==P_NOTDIR || psync_fs_err()==P_NOTEMPTY || psync_fs_err()==P_EXIST)
// return 0;
}
/*static int task_rmdir_rec(const char *path){
task_wait_no_downloads();
if (likely_log(!psync_rmdir_recursive(path)))
return 0;
if (psync_fs_err()==P_BUSY || psync_fs_err()==P_ROFS)
return -1;
return 0;
}*/
static void do_move(void *ptr, psync_pstat *st){
const char **arr;
char *oldpath, *newpath;
arr=(const char **)ptr;
oldpath=psync_strcat(arr[0], st->name, NULL);
newpath=psync_strcat(arr[1], st->name, NULL);
if (psync_stat_isfolder(&st->stat))
psync_rendir(oldpath, newpath);
else
psync_file_rename(oldpath, newpath);
psync_free(newpath);
psync_free(oldpath);
}
static int move_folder_contents(const char *oldpath, const char *newpath){
const char *arr[2];
arr[0]=oldpath;
arr[1]=newpath;
psync_list_dir(oldpath, do_move, (void *)arr);
return psync_rmdir_with_trashes(oldpath);
}
static int task_renamedir(const char *oldpath, const char *newpath){
while (1){
if (likely_log(!psync_rendir(oldpath, newpath))){
psync_set_local_full(0);
return 0;
}
if (psync_fs_err()==P_NOSPC || psync_fs_err()==P_DQUOT){
psync_set_local_full(1);
psync_milisleep(PSYNC_SLEEP_ON_DISK_FULL);
}
else {
psync_set_local_full(0);
if (psync_fs_err()==P_BUSY || psync_fs_err()==P_ROFS)
return -1;
if (psync_fs_err()==P_NOENT)
return 0;
else if (psync_fs_err()==P_EXIST || psync_fs_err()==P_NOTEMPTY || psync_fs_err()==P_NOTDIR){
psync_stat_t st;
if (psync_stat(newpath, &st)){
debug(D_BUG, "rename failed with EEXIST, but stat returned error. race?");
return -1;
}
if (psync_stat_isfolder(&st))
return move_folder_contents(oldpath, newpath);
if (psync_rename_conflicted_file(newpath))
return -1;
}
else
return -1;
}
psync_wait_statuses_array(requiredstatuses, ARRAY_SIZE(requiredstatuses));
}
}
static void update_local_folder_mtime(const char *localpath, psync_folderid_t localfolderid){
psync_stat_t st;
psync_sql_res *res;
if (psync_stat(localpath, &st)){
debug(D_ERROR, "stat failed for %s", localpath);
return;
}
res=psync_sql_prep_statement("UPDATE localfolder SET inode=?, deviceid=?, mtime=?, mtimenative=? WHERE id=?");
psync_sql_bind_uint(res, 1, psync_stat_inode(&st));
psync_sql_bind_uint(res, 2, psync_stat_device(&st));
psync_sql_bind_uint(res, 3, psync_stat_mtime(&st));
psync_sql_bind_uint(res, 4, psync_stat_mtime_native(&st));
psync_sql_bind_uint(res, 5, localfolderid);
psync_sql_run_free(res);
}
static int call_func_for_folder(psync_folderid_t localfolderid, psync_folderid_t folderid, psync_syncid_t syncid, psync_eventtype_t event,
int (*func)(const char *), int updatemtime, const char *debug){
char *localpath;
int res;
localpath=psync_local_path_for_local_folder(localfolderid, syncid, NULL);
if (likely(localpath)){
res=func(localpath);
if (!res){
psync_send_event_by_id(event, syncid, localpath, folderid);
if (updatemtime)
update_local_folder_mtime(localpath, localfolderid);
psync_decrease_local_folder_taskcnt(localfolderid);
debug(D_NOTICE, "%s %s", debug, localpath);
}
psync_free(localpath);
}
else{
debug(D_ERROR, "could not get path for local folder id %lu, syncid %u", (long unsigned)localfolderid, (unsigned)syncid);
res=0;
}
return res;
}
static int call_func_for_folder_name(psync_folderid_t localfolderid, psync_folderid_t folderid, const char *name, psync_syncid_t syncid, psync_eventtype_t event,
int (*func)(const char *), int updatemtime, const char *debug){
char *localpath;
int res;
localpath=psync_local_path_for_local_folder(localfolderid, syncid, NULL);
if (likely(localpath)){
res=func(localpath);
if (!res){
psync_send_event_by_path(event, syncid, localpath, folderid, name);
if (updatemtime)
update_local_folder_mtime(localpath, localfolderid);
psync_decrease_local_folder_taskcnt(localfolderid);
debug(D_NOTICE, "%s %s", debug, localpath);
}
psync_free(localpath);
}
else{
debug(D_ERROR, "could not get path for local folder id %lu, syncid %u", (long unsigned)localfolderid, (unsigned)syncid);
res=0;
}
return res;
}
static void delete_local_folder_from_db(psync_folderid_t localfolderid){
psync_sql_res *res;
psync_uint_row row;
if (likely(localfolderid)){
res=psync_sql_query("SELECT id FROM localfolder WHERE localparentfolderid=?");
psync_sql_bind_uint(res, 1, localfolderid);
while ((row=psync_sql_fetch_rowint(res)))
delete_local_folder_from_db(row[0]);
psync_sql_free_result(res);
res=psync_sql_query("SELECT id FROM localfile WHERE localparentfolderid=?");
psync_sql_bind_uint(res, 1, localfolderid);
while ((row=psync_sql_fetch_rowint(res)))
psync_delete_upload_tasks_for_file(row[0]);
psync_sql_free_result(res);
res=psync_sql_prep_statement("DELETE FROM localfile WHERE localparentfolderid=?");
psync_sql_bind_uint(res, 1, localfolderid);
psync_sql_run_free(res);
res=psync_sql_prep_statement("DELETE FROM localfolder WHERE id=?");
psync_sql_bind_uint(res, 1, localfolderid);
psync_sql_run_free(res);
}
}
static int task_renamefolder(psync_syncid_t newsyncid, psync_folderid_t folderid, psync_folderid_t localfolderid,
psync_folderid_t newlocalparentfolderid, const char *newname){
psync_sql_res *res;
psync_variant_row row;
char *oldpath, *newpath;
psync_syncid_t oldsyncid;
int ret;
assert(newname!=NULL);
task_wait_no_downloads();
res=psync_sql_query("SELECT syncid, localparentfolderid, name FROM localfolder WHERE id=?");
psync_sql_bind_uint(res, 1, localfolderid);
row=psync_sql_fetch_row(res);
if (unlikely(!row)){
psync_sql_free_result(res);
debug(D_ERROR, "could not find local folder id %lu", (unsigned long)localfolderid);
return 0;
}
oldsyncid=psync_get_number(row[0]);
if (oldsyncid==newsyncid && psync_get_number(row[1])==newlocalparentfolderid && !psync_filename_cmp(psync_get_string(row[2]), newname)){
psync_sql_free_result(res);
debug(D_NOTICE, "folder %s already renamed locally, probably update initiated from this client", newname);
return 0;
}
psync_sql_free_result(res);
oldpath=psync_local_path_for_local_folder(localfolderid, oldsyncid, NULL);
if (unlikely(!oldpath)){
debug(D_ERROR, "could not get local path for folder id %lu", (unsigned long)localfolderid);
return 0;
}
psync_sql_start_transaction();
psync_restart_localscan();
res=psync_sql_prep_statement("UPDATE localfolder SET syncid=?, localparentfolderid=?, name=? WHERE id=?");
psync_sql_bind_uint(res, 1, newsyncid);
psync_sql_bind_uint(res, 2, newlocalparentfolderid);
psync_sql_bind_string(res, 3, newname);
psync_sql_bind_uint(res, 4, localfolderid);
psync_sql_run_free(res);
newpath=psync_local_path_for_local_folder(localfolderid, newsyncid, NULL);
if (unlikely(!newpath)){
psync_sql_rollback_transaction();
psync_free(oldpath);
debug(D_ERROR, "could not get local path for folder id %lu", (unsigned long)localfolderid);
return 0;
}
ret=task_renamedir(oldpath, newpath);
if (ret)
psync_sql_rollback_transaction();
else{
psync_decrease_local_folder_taskcnt(localfolderid);
psync_sql_commit_transaction();
psync_send_event_by_id(PEVENT_LOCAL_FOLDER_RENAMED, newsyncid, newpath, folderid);
debug(D_NOTICE, "local folder renamed from %s to %s", oldpath, newpath);
}
psync_free(newpath);
psync_free(oldpath);
return ret;
}
static void create_conflicted(const char *name, psync_folderid_t localfolderid, psync_syncid_t syncid, const char *filename){
psync_sql_res *res;
res=psync_sql_prep_statement("DELETE FROM localfile WHERE syncid=? AND localparentfolderid=? AND name=?");
psync_sql_bind_uint(res, 1, syncid);
psync_sql_bind_uint(res, 2, localfolderid);
psync_sql_bind_string(res, 3, filename);
psync_restart_localscan();
psync_rename_conflicted_file(name);
psync_sql_run_free(res);
psync_wake_localscan();
}
static int rename_if_notex(const char *oldname, const char *newname, psync_fileid_t fileid, psync_folderid_t localfolderid,
psync_syncid_t syncid, const char *filename){
uint64_t filesize;
int ret, isrev;
unsigned char localhashhex[PSYNC_HASH_DIGEST_HEXLEN];
debug(D_NOTICE, "renaming %s to %s", oldname, newname);
if (psync_get_local_file_checksum(newname, localhashhex, &filesize)==PSYNC_NET_OK){
debug(D_NOTICE, "file %s already exists", newname);
ret=psync_is_revision_of_file(localhashhex, filesize, fileid, &isrev);
if (ret==PSYNC_NET_TEMPFAIL)
return -1;
if (ret==PSYNC_NET_OK && !isrev)
create_conflicted(newname, localfolderid, syncid, filename);
else if (ret==PSYNC_NET_OK && isrev)
debug(D_NOTICE, "file %s is found to be old revision of fileid %lu, overwriting", newname, (unsigned long)fileid);
}
return psync_file_rename_overwrite(oldname, newname);
}
static int stat_and_create_local(psync_syncid_t syncid, psync_fileid_t fileid, psync_folderid_t localfolderid, const char *filename,
const char *name, unsigned char *checksum, uint64_t serversize, uint64_t hash){
psync_sql_res *sql;
psync_stat_t st;
psync_uint_row row;
psync_fileid_t localfileid;
if (unlikely_log(psync_stat(name, &st)) || unlikely_log(psync_stat_size(&st)!=serversize))
return -1;
localfileid=0;
psync_sql_start_transaction();
sql=psync_sql_query("SELECT id FROM localfile WHERE syncid=? AND localparentfolderid=? AND name=?");
psync_sql_bind_uint(sql, 1, syncid);
psync_sql_bind_uint(sql, 2, localfolderid);
psync_sql_bind_string(sql, 3, filename);
if ((row=psync_sql_fetch_rowint(sql)))
localfileid=row[0];
psync_sql_free_result(sql);
if (localfileid){
sql=psync_sql_prep_statement("UPDATE localfile SET localparentfolderid=?, fileid=?, hash=?, syncid=?, size=?, inode=?, mtime=?, mtimenative=?, "
"name=?, checksum=? WHERE id=?");
psync_sql_bind_uint(sql, 1, localfolderid);
psync_sql_bind_uint(sql, 2, fileid);
psync_sql_bind_uint(sql, 3, hash);
psync_sql_bind_uint(sql, 4, syncid);
psync_sql_bind_uint(sql, 5, psync_stat_size(&st));
psync_sql_bind_uint(sql, 6, psync_stat_inode(&st));
psync_sql_bind_uint(sql, 7, psync_stat_mtime(&st));
psync_sql_bind_uint(sql, 8, psync_stat_mtime_native(&st));
psync_sql_bind_string(sql, 9, filename);
psync_sql_bind_lstring(sql, 10, (char *)checksum, PSYNC_HASH_DIGEST_HEXLEN);
psync_sql_bind_uint(sql, 11, localfileid);
psync_sql_run_free(sql);
}
else{
sql=psync_sql_prep_statement("REPLACE INTO localfile (localparentfolderid, fileid, hash, syncid, size, inode, mtime, mtimenative, name, checksum)"
" VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)");
psync_sql_bind_uint(sql, 1, localfolderid);
psync_sql_bind_uint(sql, 2, fileid);
psync_sql_bind_uint(sql, 3, hash);
psync_sql_bind_uint(sql, 4, syncid);
psync_sql_bind_uint(sql, 5, psync_stat_size(&st));
psync_sql_bind_uint(sql, 6, psync_stat_inode(&st));
psync_sql_bind_uint(sql, 7, psync_stat_mtime(&st));
psync_sql_bind_uint(sql, 8, psync_stat_mtime_native(&st));
psync_sql_bind_string(sql, 9, filename);
psync_sql_bind_lstring(sql, 10, (char *)checksum, PSYNC_HASH_DIGEST_HEXLEN);
psync_sql_run_free(sql);
}
psync_sql_commit_transaction();
return 0;
}
static void task_dec_counter(psync_uint_t *cnt, uint64_t filesize, uint64_t downloadedsize, int downloading){
pthread_mutex_lock(¤t_downloads_mutex);
if (cnt)
(*cnt)--;
psync_status.bytestodownloadcurrent-=filesize;
psync_status.bytesdownloaded-=downloadedsize;
if (current_downloads_waiters && cnt)
pthread_cond_signal(¤t_downloads_cond);
if (downloading){
psync_status.filesdownloading--;
if (!psync_status.filesdownloading){
psync_status.bytesdownloaded=0;
psync_status.bytestodownloadcurrent=0;
}
}
pthread_mutex_unlock(¤t_downloads_mutex);
psync_status_send_update();
}
static int task_download_file(psync_syncid_t syncid, psync_fileid_t fileid, psync_folderid_t localfolderid, const char *filename, download_list_t *dwl){
binparam params[]={P_STR("auth", psync_my_auth), P_NUM("fileid", fileid)};
psync_stat_t st;
psync_list ranges;
psync_range_list_t *range;
psync_socket *api;
binresult *res;
psync_sql_res *sql;
const binresult *hosts;
char *localpath, *tmpname, *name, *tmpold;
char *oldfiles[2];
uint32_t oldcnt;
const char *requestpath;
void *buff;
psync_http_socket *http;
psync_uint_t *current_counter;
uint64_t result, serversize, localsize, downloadedsize, addedsize, hash;
int64_t freespace;
psync_uint_row row;
psync_file_lock_t *lock;
psync_hash_ctx hashctx;
unsigned char serverhashhex[PSYNC_HASH_DIGEST_HEXLEN],
localhashhex[PSYNC_HASH_DIGEST_HEXLEN],
localhashbin[PSYNC_HASH_DIGEST_LEN];
uint32_t i;
psync_file_t fd, ifd;
int rd, rt, downloadingcounted;
downloadedsize=0;
addedsize=0;
downloadingcounted=0;
current_counter=NULL;
psync_list_init(&ranges);
tmpold=NULL;
localpath=psync_local_path_for_local_folder(localfolderid, syncid, NULL);
if (unlikely_log(!localpath))
return 0;
name=psync_strcat(localpath, PSYNC_DIRECTORY_SEPARATOR, filename, NULL);
lock=psync_lock_file(name);
if (!lock){
debug(D_NOTICE, "file %s is currently locked, skipping for now", name);
psync_free(name);
psync_free(localpath);
psync_milisleep(PSYNC_SLEEP_ON_LOCKED_FILE);
return -1;
}
rt=psync_get_remote_file_checksum(fileid, serverhashhex, &serversize, &hash);
if (unlikely_log(rt!=PSYNC_NET_OK)){
if (rt==PSYNC_NET_TEMPFAIL)
goto err_sl_ex;
else
goto ret0;
}
memcpy(dwl->hash, serverhashhex, PSYNC_HASH_DIGEST_HEXLEN);
pthread_mutex_lock(¤t_downloads_mutex);
while (starting_downloads || started_downloads>=PSYNC_MAX_PARALLEL_DOWNLOADS ||
psync_status.bytestodownloadcurrent-psync_status.bytesdownloaded>PSYNC_START_NEW_DOWNLOADS_TRESHOLD){
current_downloads_waiters++;
pthread_cond_wait(¤t_downloads_cond, ¤t_downloads_mutex);
current_downloads_waiters--;
}
starting_downloads++;
psync_status.filesdownloading++;
pthread_mutex_unlock(¤t_downloads_mutex);
current_counter=&starting_downloads;
downloadingcounted=1;
result=psync_setting_get_uint(_PS(minlocalfreespace));
if (result){
freespace=psync_get_free_space_by_path(localpath);
debug(D_NOTICE, "free space is %llu, needed %llu+%llu", (unsigned long long)freespace, (unsigned long long)result, (unsigned long long)serversize);
if (likely_log(freespace!=-1)){
if (freespace>=result+serversize)
psync_set_local_full(0);
else{
psync_set_local_full(1);
psync_free(localpath);
psync_free(name);
psync_unlock_file(lock);
task_dec_counter(current_counter, addedsize, downloadedsize, downloadingcounted);
psync_milisleep(PSYNC_SLEEP_ON_DISK_FULL);
return -1;
}
}
}
sql=psync_sql_query("SELECT fileid, id, hash FROM localfile WHERE size=? AND checksum=? AND localparentfolderid=? AND syncid=? AND name=?");
psync_sql_bind_uint(sql, 1, serversize);
psync_sql_bind_lstring(sql, 2, (char *)serverhashhex, PSYNC_HASH_DIGEST_HEXLEN);
psync_sql_bind_uint(sql, 3, localfolderid);
psync_sql_bind_uint(sql, 4, syncid);
psync_sql_bind_string(sql, 5, filename);
if ((row=psync_sql_fetch_rowint(sql))){
rt=row[0]!=fileid || row[2]!=hash;
result=row[1];
psync_sql_free_result(sql);
if (rt){
sql=psync_sql_prep_statement("UPDATE localfile SET fileid=?, hash=? WHERE id=?");
psync_sql_bind_uint(sql, 1, fileid);
psync_sql_bind_uint(sql, 2, hash);
psync_sql_bind_uint(sql, 3, result);
psync_sql_run_free(sql);
}
goto ret0;
}
psync_sql_free_result(sql);
if (psync_get_local_file_checksum(name, localhashhex, &localsize)==PSYNC_NET_OK){
if (localsize==serversize && !memcmp(localhashhex, serverhashhex, PSYNC_HASH_DIGEST_HEXLEN)){
if (unlikely_log(stat_and_create_local(syncid, fileid, localfolderid, filename, name, serverhashhex, serversize, hash)))
goto err_sl_ex;
else{
debug(D_NOTICE, "file already exists %s, not downloading", name);
goto ret0;
}
}
}
else
localsize=0;
sql=psync_sql_query("SELECT id FROM localfile WHERE size=? AND checksum=?");
psync_sql_bind_uint(sql, 1, serversize);
psync_sql_bind_lstring(sql, 2, (char *)serverhashhex, PSYNC_HASH_DIGEST_HEXLEN);
while ((row=psync_sql_fetch_rowint(sql))){
tmpname=psync_local_path_for_local_file(row[0], NULL);
if (unlikely_log(!tmpname))
continue;
rt=psync_copy_local_file_if_checksum_matches(tmpname, name, serverhashhex, serversize);
if (likely(rt==PSYNC_NET_OK)){
if (unlikely_log(stat_and_create_local(syncid, fileid, localfolderid, filename, name, serverhashhex, serversize, hash)))
rt=PSYNC_NET_TEMPFAIL;
else
debug(D_NOTICE, "file %s copied from %s", name, tmpname);
}
else
debug(D_WARNING, "failed to copy %s from %s", name, tmpname);
psync_free(tmpname);
if (likely_log(rt==PSYNC_NET_OK)){
psync_sql_free_result(sql);
goto ret0;
}
}
psync_sql_free_result(sql);
if (dwl->stop)
goto ret0;
psync_send_event_by_id(PEVENT_FILE_DOWNLOAD_STARTED, syncid, name, fileid);
pthread_mutex_lock(¤t_downloads_mutex);
psync_status.bytestodownloadcurrent+=serversize;
starting_downloads--;
started_downloads++;
if (current_downloads_waiters)
pthread_cond_signal(¤t_downloads_cond);
pthread_mutex_unlock(¤t_downloads_mutex);
addedsize=serversize;
current_counter=&started_downloads;
psync_status_send_update();
tmpname=psync_strcat(localpath, PSYNC_DIRECTORY_SEPARATOR, filename, PSYNC_APPEND_PARTIAL_FILES, NULL);
if (serversize>=PSYNC_MIN_SIZE_FOR_P2P){
rt=psync_p2p_check_download(fileid, serverhashhex, serversize, tmpname);
if (rt==PSYNC_NET_OK){
psync_stop_localscan();
if (unlikely_log(rename_if_notex(tmpname, name, fileid, localfolderid, syncid, filename)) ||
unlikely_log(stat_and_create_local(syncid, fileid, localfolderid, filename, name, localhashhex, serversize, hash))){
psync_resume_localscan();
psync_free(tmpname);
goto err_sl_ex;
}
psync_resume_localscan();
psync_free(tmpname);
goto ret0;
}
else if (rt==PSYNC_NET_TEMPFAIL){
psync_free(tmpname);
goto err_sl_ex;
}
}
api=psync_apipool_get();
if (unlikely_log(!api)){
psync_free(tmpname);
goto err_sl_ex;
}
res=send_command(api, "getfilelink", params);
if (unlikely_log(!res)){
psync_apipool_release_bad(api);
psync_free(tmpname);
goto err_sl_ex;
}
psync_apipool_release(api);
result=psync_find_result(res, "result", PARAM_NUM)->num;
if (unlikely(result)){
debug(D_WARNING, "got error %lu from getfilelink", (long unsigned)result);
psync_process_api_error(result);
if (psync_handle_api_result(result)==PSYNC_NET_TEMPFAIL)
goto err0;
else{
psync_free(res);
psync_free(tmpname);
goto ret0;
}
}
oldcnt=0;
if (serversize>=PSYNC_MIN_SIZE_FOR_CHECKSUMS){
if (!psync_stat(tmpname, &st) && psync_stat_size(&st)>=PSYNC_MIN_SIZE_FOR_CHECKSUMS){
tmpold=psync_strcat(localpath, PSYNC_DIRECTORY_SEPARATOR, filename, "-old", PSYNC_APPEND_PARTIAL_FILES, NULL);
if (psync_file_rename_overwrite(tmpname, tmpold)){
psync_free(tmpold);
tmpold=NULL;
}
else
oldfiles[oldcnt++]=tmpold;
}
if (localsize>=PSYNC_MIN_SIZE_FOR_CHECKSUMS)
oldfiles[oldcnt++]=name;
}
fd=psync_file_open(tmpname, P_O_WRONLY, P_O_CREAT|P_O_TRUNC);
if (unlikely_log(fd==INVALID_HANDLE_VALUE))
goto err0;
rt=psync_net_download_ranges(&ranges, fileid, hash, serversize, oldfiles, oldcnt);
if (rt==PSYNC_NET_TEMPFAIL)
goto err1;
hosts=psync_find_result(res, "hosts", PARAM_ARRAY);
requestpath=psync_find_result(res, "path", PARAM_STR)->str;
buff=psync_malloc(PSYNC_COPY_BUFFER_SIZE);
http=NULL;
psync_hash_init(&hashctx);
psync_list_for_each_element(range, &ranges, psync_range_list_t, list){
if (range->type==PSYNC_RANGE_TRANSFER){
debug(D_NOTICE, "downloading %lu bytes from offset %lu", (unsigned long)range->len, (unsigned long)range->off);
for (i=0; i<hosts->length; i++)
if ((http=psync_http_connect(hosts->array[i]->str, requestpath, range->off, (range->len==serversize&&range->off==0)?0:(range->len+range->off-1))))
break;
if (unlikely_log(!http))
goto err2;
rd=0;
while (!dwl->stop){
rd=psync_http_readall(http, buff, PSYNC_COPY_BUFFER_SIZE);
if (rd==0)
break;
if (unlikely_log(rd<0) ||
unlikely_log(psync_file_writeall_checkoverquota(fd, buff, rd)))
goto err2;
psync_hash_update(&hashctx, buff, rd);
pthread_mutex_lock(¤t_downloads_mutex);
psync_status.bytesdownloaded+=rd;
if (current_downloads_waiters && psync_status.bytestodownloadcurrent-psync_status.bytesdownloaded<=PSYNC_START_NEW_DOWNLOADS_TRESHOLD)
pthread_cond_signal(¤t_downloads_cond);
pthread_mutex_unlock(¤t_downloads_mutex);
psync_send_status_update();
downloadedsize+=rd;
if (unlikely(!psync_statuses_ok_array(requiredstatuses, ARRAY_SIZE(requiredstatuses))))
goto err2;
}
psync_http_close(http);
http=NULL;
}
else{
debug(D_NOTICE, "copying %lu bytes from %s offset %lu", (unsigned long)range->len, range->filename, (unsigned long)range->off);
ifd=psync_file_open(range->filename, P_O_RDONLY, 0);
if (unlikely_log(ifd==INVALID_HANDLE_VALUE))
goto err2;
if (unlikely_log(psync_file_seek(ifd, range->off, P_SEEK_SET)==-1)){
psync_file_close(ifd);
goto err2;
}
result=range->len;
while (!dwl->stop && result){
if (result>PSYNC_COPY_BUFFER_SIZE)
rd=PSYNC_COPY_BUFFER_SIZE;
else
rd=result;
rd=psync_file_read(ifd, buff, rd);
if (unlikely_log(rd<=0) || unlikely_log(psync_file_writeall_checkoverquota(fd, buff, rd)) ||
unlikely(!psync_statuses_ok_array(requiredstatuses, ARRAY_SIZE(requiredstatuses)))){
psync_file_close(ifd);
goto err2;
}
result-=rd;
psync_hash_update(&hashctx, buff, rd);
pthread_mutex_lock(¤t_downloads_mutex);
psync_status.bytesdownloaded+=rd;
if (current_downloads_waiters && psync_status.bytestodownloadcurrent-psync_status.bytesdownloaded<=PSYNC_START_NEW_DOWNLOADS_TRESHOLD)
pthread_cond_signal(¤t_downloads_cond);
pthread_mutex_unlock(¤t_downloads_mutex);
psync_send_status_update();
downloadedsize+=rd;
}
psync_file_close(ifd);
}
if (dwl->stop)
break;
}
if (unlikely(dwl->stop)){
psync_free(buff);
psync_file_close(fd);
psync_hash_final(localhashbin, &hashctx);
psync_file_delete(tmpname);
goto err0;
}
if (unlikely_log(psync_file_sync(fd)))
goto err2;
psync_free(buff);
psync_hash_final(localhashbin, &hashctx);
if (unlikely_log(psync_file_close(fd)))
goto err0;
psync_binhex(localhashhex, localhashbin, PSYNC_HASH_DIGEST_LEN);
if (unlikely_log(memcmp(localhashhex, serverhashhex, PSYNC_HASH_DIGEST_HEXLEN))){
debug(D_WARNING, "got wrong file checksum for file %s", filename);
goto err0;
}
psync_stop_localscan();
if (unlikely_log(rename_if_notex(tmpname, name, fileid, localfolderid, syncid, filename)) ||
unlikely_log(stat_and_create_local(syncid, fileid, localfolderid, filename, name, localhashhex, serversize, hash))){
psync_resume_localscan();
goto err0;
}
psync_resume_localscan();
psync_send_event_by_id(PEVENT_FILE_DOWNLOAD_FINISHED, syncid, name, fileid);
debug(D_NOTICE, "file downloaded %s", name);
task_dec_counter(current_counter, addedsize, downloadedsize, downloadingcounted);
psync_list_for_each_element_call(&ranges, psync_range_list_t, list, psync_free);
psync_unlock_file(lock);
psync_free(name);
if (tmpold){
psync_file_delete(tmpold);
psync_free(tmpold);
}
psync_free(tmpname);
psync_free(localpath);
psync_free(res);
return 0;
err2:
psync_hash_final(localhashbin, &hashctx); /* just in case */
psync_free(buff);
if (http)
psync_http_close(http);
err1:
psync_file_close(fd);
psync_send_event_by_id(PEVENT_FILE_DOWNLOAD_FAILED, syncid, name, fileid);
err0:
task_dec_counter(current_counter, addedsize, downloadedsize, downloadingcounted);
psync_list_for_each_element_call(&ranges, psync_range_list_t, list, psync_free);
if (tmpold){
psync_file_delete(tmpold);
psync_free(tmpold);
}
psync_free(tmpname);
psync_free(localpath);
psync_unlock_file(lock);
psync_free(name);
psync_free(res);
return -1;
err_sl_ex:
task_dec_counter(current_counter, addedsize, downloadedsize, downloadingcounted);
psync_free(localpath);
psync_unlock_file(lock);
psync_free(name);
psync_timer_notify_exception();
psync_milisleep(PSYNC_SOCK_TIMEOUT_ON_EXCEPTION*1000);
return -1;
ret0:
task_dec_counter(current_counter, addedsize, downloadedsize, downloadingcounted);
psync_free(localpath);
psync_unlock_file(lock);
psync_free(name);
return 0;
}
static int task_delete_file(psync_syncid_t syncid, psync_fileid_t fileid, const char *remotepath){
psync_sql_res *res, *stmt;
psync_uint_row row;
char *name;
int ret;
ret=0;
task_wait_no_downloads();
if (syncid){
res=psync_sql_query("SELECT id, syncid FROM localfile WHERE fileid=? AND syncid=?");
psync_sql_bind_uint(res, 2, syncid);
}
else
res=psync_sql_query("SELECT id, syncid FROM localfile WHERE fileid=?");
psync_sql_bind_uint(res, 1, fileid);
psync_restart_localscan();
while ((row=psync_sql_fetch_rowint(res))){
name=psync_local_path_for_local_file(row[0], NULL);
if (likely_log(name)){
if (unlikely(psync_file_delete(name))){
debug(D_WARNING, "error deleting local file %s error %d", name, (int)psync_fs_err());
if (psync_fs_err()==P_BUSY || psync_fs_err()==P_ROFS){
ret=-1;
psync_free(name);
continue;
}
}
else
debug(D_NOTICE, "local file %s deleted", name);
psync_send_event_by_path(PEVENT_LOCAL_FILE_DELETED, row[1], name, fileid, remotepath);
psync_free(name);
}
stmt=psync_sql_prep_statement("DELETE FROM localfile WHERE id=?");
psync_sql_bind_uint(stmt, 1, row[0]);
psync_sql_run_free(stmt);
}
psync_sql_free_result(res);
return ret;
}
static int task_rename_file(psync_syncid_t oldsyncid, psync_syncid_t newsyncid, psync_fileid_t fileid, psync_folderid_t oldlocalfolderid,
psync_folderid_t newlocalfolderid, const char *newname){
char *oldpath, *newfolder, *newpath;
psync_sql_res *res;
psync_variant_row row;
psync_fileid_t lfileid;
psync_stat_t st;
psync_syncid_t syncid;
int ret;
task_wait_no_downloads();
res=psync_sql_query("SELECT id, localparentfolderid, syncid, name FROM localfile WHERE fileid=?");
psync_sql_bind_uint(res, 1, fileid);
lfileid=0;
while ((row=psync_sql_fetch_row(res))){
syncid=psync_get_number(row[2]);
if (psync_get_number(row[1])==newlocalfolderid && syncid==newsyncid && !psync_filename_cmp(psync_get_string(row[3]), newname)){
debug(D_NOTICE, "file %s already renamed locally, probably update initiated from this client", newname);
psync_sql_free_result(res);
return 0;
}
else if (syncid==oldsyncid){
lfileid=psync_get_number(row[0]);
break;
}
}
psync_sql_free_result(res);
if (unlikely_log(!lfileid)){
psync_task_download_file(newsyncid, fileid, newlocalfolderid, newname);
return 0;
}
newfolder=psync_local_path_for_local_folder(newlocalfolderid, newsyncid, NULL);
if (unlikely_log(!newfolder))
return 0;
oldpath=psync_local_path_for_local_file(lfileid, NULL);
if (unlikely_log(!oldpath)){
psync_free(newfolder);
return 0;
}
newpath=psync_strcat(newfolder, PSYNC_DIRECTORY_SEPARATOR, newname, NULL);
ret=0;
psync_stop_localscan();
if (psync_file_rename_overwrite(oldpath, newpath)){
psync_resume_localscan();
if (psync_fs_err()==P_NOENT){
debug(D_WARNING, "renamed from %s to %s failed, downloading", oldpath, newpath);
psync_task_download_file(newsyncid, fileid, newlocalfolderid, newname);
}
else
ret=-1;
}
else{
if (likely_log(!psync_stat(newpath, &st))){
res=psync_sql_prep_statement("UPDATE localfile SET localparentfolderid=?, syncid=?, name=?, inode=?, mtime=?, mtimenative=? WHERE id=?");
psync_sql_bind_uint(res, 1, newlocalfolderid);
psync_sql_bind_uint(res, 2, newsyncid);
psync_sql_bind_string(res, 3, newname);
psync_sql_bind_uint(res, 4, psync_stat_inode(&st));
psync_sql_bind_uint(res, 5, psync_stat_mtime(&st));
psync_sql_bind_uint(res, 6, psync_stat_mtime_native(&st));
psync_sql_bind_uint(res, 7, lfileid);
psync_sql_run_free(res);
debug(D_NOTICE, "renamed %s to %s", oldpath, newpath);
}
psync_resume_localscan();
}
psync_free(newpath);
psync_free(oldpath);
psync_free(newfolder);
return ret;
}
static void task_run_download_file_thread(void *ptr){
download_task_t *dt;
psync_sql_res *res;
dt=(download_task_t *)ptr;
if (task_download_file(dt->dwllist.syncid, dt->dwllist.fileid, dt->localfolderid, dt->filename, &dt->dwllist)){
psync_milisleep(PSYNC_SLEEP_ON_FAILED_DOWNLOAD);
res=psync_sql_prep_statement("UPDATE task SET inprogress=0 WHERE id=?");
psync_sql_bind_uint(res, 1, dt->taskid);
psync_sql_run_free(res);
psync_wake_download();
}
else{
res=psync_sql_prep_statement("DELETE FROM task WHERE id=?");
psync_sql_bind_uint(res, 1, dt->taskid);
psync_sql_run_free(res);
psync_status_recalc_to_download();
psync_send_status_update();
}
pthread_mutex_lock(¤t_downloads_mutex);
psync_list_del(&dt->dwllist.list);
pthread_mutex_unlock(¤t_downloads_mutex);
psync_free(dt);
}
static int task_run_download_file(uint64_t taskid, psync_syncid_t syncid, psync_fileid_t fileid, psync_folderid_t localfolderid, const char *filename){
psync_sql_res *res;
download_task_t *dt;
size_t len;
res=psync_sql_prep_statement("UPDATE task SET inprogress=1 WHERE id=?");
psync_sql_bind_uint(res, 1, taskid);
psync_sql_run_free(res);
len=strlen(filename);
dt=(download_task_t *)psync_malloc(offsetof(download_task_t, filename)+len+1);
dt->taskid=taskid;
dt->dwllist.fileid=fileid;
dt->dwllist.syncid=syncid;
dt->dwllist.stop=0;
dt->dwllist.hash[0]=0;
dt->localfolderid=localfolderid;
memcpy(dt->filename, filename, len+1);
pthread_mutex_lock(¤t_downloads_mutex);
psync_list_add_tail(&downloads, &dt->dwllist.list);
while (!dt->dwllist.stop && (starting_downloads || started_downloads>=PSYNC_MAX_PARALLEL_DOWNLOADS ||
psync_status.bytestodownloadcurrent-psync_status.bytesdownloaded>PSYNC_START_NEW_DOWNLOADS_TRESHOLD)){
current_downloads_waiters++;
pthread_cond_wait(¤t_downloads_cond, ¤t_downloads_mutex);
current_downloads_waiters--;
}
if (unlikely(dt->dwllist.stop))
psync_list_del(&dt->dwllist.list);
pthread_mutex_unlock(¤t_downloads_mutex);
if (unlikely(dt->dwllist.stop)){
psync_free(dt);
res=psync_sql_prep_statement("UPDATE task SET inprogress=0 WHERE id=?");
psync_sql_bind_uint(res, 1, taskid);
psync_sql_run_free(res);
}
else
psync_run_thread1("download file", task_run_download_file_thread, dt);
return -1;
}
static void task_del_folder_rec_do(const char *localpath, psync_folderid_t localfolderid, psync_syncid_t syncid){
psync_sql_res *res;
psync_variant_row vrow;
char *nm;
res=psync_sql_query("SELECT id, name FROM localfile WHERE localparentfolderid=? AND syncid=?");
psync_sql_bind_uint(res, 1, localfolderid);
psync_sql_bind_uint(res, 2, syncid);
while ((vrow=psync_sql_fetch_row(res))){
psync_delete_upload_tasks_for_file(psync_get_number(vrow[0]));
nm=psync_strcat(localpath, PSYNC_DIRECTORY_SEPARATOR, psync_get_string(vrow[1]), NULL);
debug(D_NOTICE, "deleting %s", nm);
psync_file_delete(nm);
psync_free(nm);
}