/
mysqlnd_net.c
1249 lines (1110 loc) · 40.8 KB
/
mysqlnd_net.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
/*
+----------------------------------------------------------------------+
| PHP Version 7 |
+----------------------------------------------------------------------+
| Copyright (c) 2006-2016 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andrey Hristov <andrey@php.net> |
| Ulf Wendel <uw@php.net> |
| Georg Richter <georg@php.net> |
+----------------------------------------------------------------------+
*/
#include "php.h"
#include "php_globals.h"
#include "mysqlnd.h"
#include "mysqlnd_priv.h"
#include "mysqlnd_wireprotocol.h"
#include "mysqlnd_statistics.h"
#include "mysqlnd_debug.h"
#include "mysqlnd_ext_plugin.h"
#include "php_network.h"
#include "zend_ini.h"
#ifdef MYSQLND_COMPRESSION_ENABLED
#include <zlib.h>
#endif
#ifndef PHP_WIN32
#include <netinet/tcp.h>
#else
#include <winsock.h>
#endif
/* {{{ mysqlnd_set_sock_no_delay */
static int
mysqlnd_set_sock_no_delay(php_stream * stream)
{
int socketd = ((php_netstream_data_t*)stream->abstract)->socket;
int ret = SUCCESS;
int flag = 1;
int result = setsockopt(socketd, IPPROTO_TCP, TCP_NODELAY, (char *) &flag, sizeof(int));
DBG_ENTER("mysqlnd_set_sock_no_delay");
if (result == -1) {
ret = FAILURE;
}
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_set_sock_keepalive */
static int
mysqlnd_set_sock_keepalive(php_stream * stream)
{
int socketd = ((php_netstream_data_t*)stream->abstract)->socket;
int ret = SUCCESS;
int flag = 1;
int result = setsockopt(socketd, SOL_SOCKET, SO_KEEPALIVE, (char *) &flag, sizeof(int));
DBG_ENTER("mysqlnd_set_sock_keepalive");
if (result == -1) {
ret = FAILURE;
}
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_net::network_read_ex */
static enum_func_status
MYSQLND_METHOD(mysqlnd_net, network_read_ex)(MYSQLND_NET * const net, zend_uchar * const buffer, const size_t count,
MYSQLND_STATS * const stats, MYSQLND_ERROR_INFO * const error_info)
{
enum_func_status return_value = PASS;
php_stream * net_stream = net->data->m.get_stream(net);
size_t old_chunk_size = net_stream->chunk_size;
size_t to_read = count, ret;
zend_uchar * p = buffer;
DBG_ENTER("mysqlnd_net::network_read_ex");
DBG_INF_FMT("count="MYSQLND_SZ_T_SPEC, count);
net_stream->chunk_size = MIN(to_read, net->data->options.net_read_buffer_size);
while (to_read) {
if (!(ret = php_stream_read(net_stream, (char *) p, to_read))) {
DBG_ERR_FMT("Error while reading header from socket");
return_value = FAIL;
break;
}
p += ret;
to_read -= ret;
}
MYSQLND_INC_CONN_STATISTIC_W_VALUE(stats, STAT_BYTES_RECEIVED, count - to_read);
net_stream->chunk_size = old_chunk_size;
DBG_RETURN(return_value);
}
/* }}} */
/* {{{ mysqlnd_net::network_write_ex */
static size_t
MYSQLND_METHOD(mysqlnd_net, network_write_ex)(MYSQLND_NET * const net, const zend_uchar * const buffer, const size_t count,
MYSQLND_STATS * const stats, MYSQLND_ERROR_INFO * const error_info)
{
size_t ret;
DBG_ENTER("mysqlnd_net::network_write_ex");
DBG_INF_FMT("sending %u bytes", count);
ret = php_stream_write(net->data->m.get_stream(net), (char *)buffer, count);
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_net::open_pipe */
static php_stream *
MYSQLND_METHOD(mysqlnd_net, open_pipe)(MYSQLND_NET * const net, const char * const scheme, const size_t scheme_len,
const zend_bool persistent,
MYSQLND_STATS * const conn_stats, MYSQLND_ERROR_INFO * const error_info)
{
#if PHP_API_VERSION < 20100412
unsigned int streams_options = ENFORCE_SAFE_MODE;
#else
unsigned int streams_options = 0;
#endif
dtor_func_t origin_dtor;
php_stream * net_stream = NULL;
DBG_ENTER("mysqlnd_net::open_pipe");
if (persistent) {
streams_options |= STREAM_OPEN_PERSISTENT;
}
streams_options |= IGNORE_URL;
net_stream = php_stream_open_wrapper((char*) scheme + sizeof("pipe://") - 1, "r+", streams_options, NULL);
if (!net_stream) {
SET_CLIENT_ERROR(*error_info, CR_CONNECTION_ERROR, UNKNOWN_SQLSTATE, "Unknown errror while connecting");
DBG_RETURN(NULL);
}
/*
Streams are not meant for C extensions! Thus we need a hack. Every connected stream will
be registered as resource (in EG(regular_list). So far, so good. However, it won't be
unregistered until the script ends. So, we need to take care of that.
*/
origin_dtor = EG(regular_list).pDestructor;
EG(regular_list).pDestructor = NULL;
zend_hash_index_del(&EG(regular_list), net_stream->res->handle); /* ToDO: should it be res->handle, do streams register with addref ?*/
EG(regular_list).pDestructor = origin_dtor;
net_stream->res = NULL;
DBG_RETURN(net_stream);
}
/* }}} */
/* {{{ mysqlnd_net::open_tcp_or_unix */
static php_stream *
MYSQLND_METHOD(mysqlnd_net, open_tcp_or_unix)(MYSQLND_NET * const net, const char * const scheme, const size_t scheme_len,
const zend_bool persistent,
MYSQLND_STATS * const conn_stats, MYSQLND_ERROR_INFO * const error_info)
{
#if PHP_API_VERSION < 20100412
unsigned int streams_options = ENFORCE_SAFE_MODE;
#else
unsigned int streams_options = 0;
#endif
unsigned int streams_flags = STREAM_XPORT_CLIENT | STREAM_XPORT_CONNECT;
char * hashed_details = NULL;
int hashed_details_len = 0;
zend_string *errstr = NULL;
int errcode = 0;
struct timeval tv;
dtor_func_t origin_dtor;
php_stream * net_stream = NULL;
DBG_ENTER("mysqlnd_net::open_tcp_or_unix");
net->data->stream = NULL;
if (persistent) {
hashed_details_len = mnd_sprintf(&hashed_details, 0, "%p", net);
DBG_INF_FMT("hashed_details=%s", hashed_details);
}
if (net->data->options.timeout_connect) {
tv.tv_sec = net->data->options.timeout_connect;
tv.tv_usec = 0;
}
DBG_INF_FMT("calling php_stream_xport_create");
net_stream = php_stream_xport_create(scheme, scheme_len, streams_options, streams_flags,
hashed_details, (net->data->options.timeout_connect) ? &tv : NULL,
NULL /*ctx*/, &errstr, &errcode);
if (errstr || !net_stream) {
DBG_ERR("Error");
if (hashed_details) {
mnd_sprintf_free(hashed_details);
}
errcode = CR_CONNECTION_ERROR;
SET_CLIENT_ERROR(*error_info,
CR_CONNECTION_ERROR,
UNKNOWN_SQLSTATE,
errstr? ZSTR_VAL(errstr):"Unknown error while connecting");
if (errstr) {
zend_string_release(errstr);
}
DBG_RETURN(NULL);
}
if (hashed_details) {
/*
If persistent, the streams register it in EG(persistent_list).
This is unwanted. ext/mysql or ext/mysqli are responsible to clean,
whatever they have to.
*/
zend_resource *le;
if ((le = zend_hash_str_find_ptr(&EG(persistent_list), hashed_details, hashed_details_len))) {
origin_dtor = EG(persistent_list).pDestructor;
/*
in_free will let streams code skip destructing - big HACK,
but STREAMS suck big time regarding persistent streams.
Just not compatible for extensions that need persistency.
*/
EG(persistent_list).pDestructor = NULL;
zend_hash_str_del(&EG(persistent_list), hashed_details, hashed_details_len);
EG(persistent_list).pDestructor = origin_dtor;
pefree(le, 1);
}
#if ZEND_DEBUG
/* Shut-up the streams, they don't know what they are doing */
net_stream->__exposed = 1;
#endif
mnd_sprintf_free(hashed_details);
}
/*
Streams are not meant for C extensions! Thus we need a hack. Every connected stream will
be registered as resource (in EG(regular_list). So far, so good. However, it won't be
unregistered until the script ends. So, we need to take care of that.
*/
origin_dtor = EG(regular_list).pDestructor;
EG(regular_list).pDestructor = NULL;
zend_hash_index_del(&EG(regular_list), net_stream->res->handle); /* ToDO: should it be res->handle, do streams register with addref ?*/
efree(net_stream->res);
net_stream->res = NULL;
EG(regular_list).pDestructor = origin_dtor;
DBG_RETURN(net_stream);
}
/* }}} */
/* {{{ mysqlnd_net::post_connect_set_opt */
static void
MYSQLND_METHOD(mysqlnd_net, post_connect_set_opt)(MYSQLND_NET * const net,
const char * const scheme, const size_t scheme_len,
MYSQLND_STATS * const conn_stats, MYSQLND_ERROR_INFO * const error_info)
{
php_stream * net_stream = net->data->m.get_stream(net);
DBG_ENTER("mysqlnd_net::post_connect_set_opt");
if (net_stream) {
if (net->data->options.timeout_read) {
struct timeval tv;
DBG_INF_FMT("setting %u as PHP_STREAM_OPTION_READ_TIMEOUT", net->data->options.timeout_read);
tv.tv_sec = net->data->options.timeout_read;
tv.tv_usec = 0;
php_stream_set_option(net_stream, PHP_STREAM_OPTION_READ_TIMEOUT, 0, &tv);
}
if (!memcmp(scheme, "tcp://", sizeof("tcp://") - 1)) {
/* TCP -> Set TCP_NODELAY */
mysqlnd_set_sock_no_delay(net_stream);
/* TCP -> Set SO_KEEPALIVE */
mysqlnd_set_sock_keepalive(net_stream);
}
}
DBG_VOID_RETURN;
}
/* }}} */
/* {{{ mysqlnd_net::get_open_stream */
static func_mysqlnd_net__open_stream
MYSQLND_METHOD(mysqlnd_net, get_open_stream)(MYSQLND_NET * const net, const char * const scheme, const size_t scheme_len,
MYSQLND_ERROR_INFO * const error_info)
{
func_mysqlnd_net__open_stream ret = NULL;
DBG_ENTER("mysqlnd_net::get_open_stream");
if (scheme_len > (sizeof("pipe://") - 1) && !memcmp(scheme, "pipe://", sizeof("pipe://") - 1)) {
ret = net->data->m.open_pipe;
} else if ((scheme_len > (sizeof("tcp://") - 1) && !memcmp(scheme, "tcp://", sizeof("tcp://") - 1))
||
(scheme_len > (sizeof("unix://") - 1) && !memcmp(scheme, "unix://", sizeof("unix://") - 1)))
{
ret = net->data->m.open_tcp_or_unix;
}
if (!ret) {
SET_CLIENT_ERROR(*error_info, CR_CONNECTION_ERROR, UNKNOWN_SQLSTATE, "No handler for this scheme");
}
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_net::connect_ex */
static enum_func_status
MYSQLND_METHOD(mysqlnd_net, connect_ex)(MYSQLND_NET * const net, const char * const scheme, const size_t scheme_len,
const zend_bool persistent,
MYSQLND_STATS * const conn_stats, MYSQLND_ERROR_INFO * const error_info)
{
enum_func_status ret = FAIL;
func_mysqlnd_net__open_stream open_stream = NULL;
DBG_ENTER("mysqlnd_net::connect_ex");
net->packet_no = net->compressed_envelope_packet_no = 0;
net->data->m.close_stream(net, conn_stats, error_info);
open_stream = net->data->m.get_open_stream(net, scheme, scheme_len, error_info);
if (open_stream) {
php_stream * net_stream = open_stream(net, scheme, scheme_len, persistent, conn_stats, error_info);
if (net_stream) {
(void) net->data->m.set_stream(net, net_stream);
net->data->m.post_connect_set_opt(net, scheme, scheme_len, conn_stats, error_info);
ret = PASS;
}
}
DBG_RETURN(ret);
}
/* }}} */
/* We assume that MYSQLND_HEADER_SIZE is 4 bytes !! */
#define COPY_HEADER(T,A) do { \
*(((char *)(T))) = *(((char *)(A)));\
*(((char *)(T))+1) = *(((char *)(A))+1);\
*(((char *)(T))+2) = *(((char *)(A))+2);\
*(((char *)(T))+3) = *(((char *)(A))+3); } while (0)
#define STORE_HEADER_SIZE(safe_storage, buffer) COPY_HEADER((safe_storage), (buffer))
#define RESTORE_HEADER_SIZE(buffer, safe_storage) STORE_HEADER_SIZE((safe_storage), (buffer))
/* {{{ mysqlnd_net::send_ex */
/*
IMPORTANT : It's expected that buffer has place in the beginning for MYSQLND_HEADER_SIZE !!!!
This is done for performance reasons in the caller of this function.
Otherwise we will have to do send two TCP packets, or do new alloc and memcpy.
Neither are quick, thus the clients of this function are obligated to do
what they are asked for.
`count` is actually the length of the payload data. Thus :
count + MYSQLND_HEADER_SIZE = sizeof(buffer) (not the pointer but the actual buffer)
*/
static size_t
MYSQLND_METHOD(mysqlnd_net, send_ex)(MYSQLND_NET * const net, zend_uchar * const buffer, const size_t count,
MYSQLND_STATS * const conn_stats, MYSQLND_ERROR_INFO * const error_info)
{
zend_uchar safe_buf[((MYSQLND_HEADER_SIZE) + (sizeof(zend_uchar)) - 1) / (sizeof(zend_uchar))];
zend_uchar * safe_storage = safe_buf;
size_t bytes_sent, packets_sent = 1;
size_t left = count;
zend_uchar * p = (zend_uchar *) buffer;
zend_uchar * compress_buf = NULL;
size_t to_be_sent;
DBG_ENTER("mysqlnd_net::send_ex");
DBG_INF_FMT("count=" MYSQLND_SZ_T_SPEC " compression=%u", count, net->data->compressed);
if (net->data->compressed == TRUE) {
size_t comp_buf_size = MYSQLND_HEADER_SIZE + COMPRESSED_HEADER_SIZE + MYSQLND_HEADER_SIZE + MIN(left, MYSQLND_MAX_PACKET_SIZE);
DBG_INF_FMT("compress_buf_size="MYSQLND_SZ_T_SPEC, comp_buf_size);
compress_buf = mnd_emalloc(comp_buf_size);
}
do {
to_be_sent = MIN(left, MYSQLND_MAX_PACKET_SIZE);
DBG_INF_FMT("to_be_sent=%u", to_be_sent);
DBG_INF_FMT("packets_sent=%u", packets_sent);
DBG_INF_FMT("compressed_envelope_packet_no=%u", net->compressed_envelope_packet_no);
DBG_INF_FMT("packet_no=%u", net->packet_no);
#ifdef MYSQLND_COMPRESSION_ENABLED
if (net->data->compressed == TRUE) {
/* here we need to compress the data and then write it, first comes the compressed header */
size_t tmp_complen = to_be_sent;
size_t payload_size;
zend_uchar * uncompressed_payload = p; /* should include the header */
STORE_HEADER_SIZE(safe_storage, uncompressed_payload);
int3store(uncompressed_payload, to_be_sent);
int1store(uncompressed_payload + 3, net->packet_no);
if (PASS == net->data->m.encode((compress_buf + COMPRESSED_HEADER_SIZE + MYSQLND_HEADER_SIZE), &tmp_complen,
uncompressed_payload, to_be_sent + MYSQLND_HEADER_SIZE))
{
int3store(compress_buf + MYSQLND_HEADER_SIZE, to_be_sent + MYSQLND_HEADER_SIZE);
payload_size = tmp_complen;
} else {
int3store(compress_buf + MYSQLND_HEADER_SIZE, 0);
memcpy(compress_buf + MYSQLND_HEADER_SIZE + COMPRESSED_HEADER_SIZE, uncompressed_payload, to_be_sent + MYSQLND_HEADER_SIZE);
payload_size = to_be_sent + MYSQLND_HEADER_SIZE;
}
RESTORE_HEADER_SIZE(uncompressed_payload, safe_storage);
int3store(compress_buf, payload_size);
int1store(compress_buf + 3, net->packet_no);
DBG_INF_FMT("writing "MYSQLND_SZ_T_SPEC" bytes to the network", payload_size + MYSQLND_HEADER_SIZE + COMPRESSED_HEADER_SIZE);
bytes_sent = net->data->m.network_write_ex(net, compress_buf, payload_size + MYSQLND_HEADER_SIZE + COMPRESSED_HEADER_SIZE,
conn_stats, error_info);
net->compressed_envelope_packet_no++;
#if WHEN_WE_NEED_TO_CHECK_WHETHER_COMPRESSION_WORKS_CORRECTLY
if (res == Z_OK) {
size_t decompressed_size = left + MYSQLND_HEADER_SIZE;
zend_uchar * decompressed_data = mnd_malloc(decompressed_size);
int error = net->data->m.decode(decompressed_data, decompressed_size,
compress_buf + MYSQLND_HEADER_SIZE + COMPRESSED_HEADER_SIZE, payload_size);
if (error == Z_OK) {
int i;
DBG_INF("success decompressing");
for (i = 0 ; i < decompressed_size; i++) {
if (i && (i % 30 == 0)) {
printf("\n\t\t");
}
printf("%.2X ", (int)*((char*)&(decompressed_data[i])));
DBG_INF_FMT("%.2X ", (int)*((char*)&(decompressed_data[i])));
}
} else {
DBG_INF("error decompressing");
}
mnd_free(decompressed_data);
}
#endif /* WHEN_WE_NEED_TO_CHECK_WHETHER_COMPRESSION_WORKS_CORRECTLY */
} else
#endif /* MYSQLND_COMPRESSION_ENABLED */
{
DBG_INF("no compression");
STORE_HEADER_SIZE(safe_storage, p);
int3store(p, to_be_sent);
int1store(p + 3, net->packet_no);
bytes_sent = net->data->m.network_write_ex(net, p, to_be_sent + MYSQLND_HEADER_SIZE, conn_stats, error_info);
RESTORE_HEADER_SIZE(p, safe_storage);
net->compressed_envelope_packet_no++;
}
net->packet_no++;
p += to_be_sent;
left -= to_be_sent;
packets_sent++;
/*
if left is 0 then there is nothing more to send, but if the last packet was exactly
with the size MYSQLND_MAX_PACKET_SIZE we need to send additional packet, which has
empty payload. Thus if left == 0 we check for to_be_sent being the max size. If it is
indeed it then loop once more, then to_be_sent will become 0, left will stay 0. Empty
packet will be sent and this loop will end.
*/
} while (bytes_sent && (left > 0 || to_be_sent == MYSQLND_MAX_PACKET_SIZE));
DBG_INF_FMT("packet_size="MYSQLND_SZ_T_SPEC" packet_no=%u", left, net->packet_no);
MYSQLND_INC_CONN_STATISTIC_W_VALUE3(conn_stats,
STAT_BYTES_SENT, count + packets_sent * MYSQLND_HEADER_SIZE,
STAT_PROTOCOL_OVERHEAD_OUT, packets_sent * MYSQLND_HEADER_SIZE,
STAT_PACKETS_SENT, packets_sent);
if (compress_buf) {
mnd_efree(compress_buf);
}
/* Even for zero size payload we have to send a packet */
if (!bytes_sent) {
DBG_ERR_FMT("Can't %u send bytes", count);
SET_CLIENT_ERROR(*error_info, CR_SERVER_GONE_ERROR, UNKNOWN_SQLSTATE, mysqlnd_server_gone);
}
DBG_RETURN(bytes_sent);
}
/* }}} */
#ifdef MYSQLND_COMPRESSION_ENABLED
/* {{{ php_mysqlnd_read_buffer_is_empty */
static zend_bool
php_mysqlnd_read_buffer_is_empty(MYSQLND_READ_BUFFER * buffer)
{
return buffer->len? FALSE:TRUE;
}
/* }}} */
/* {{{ php_mysqlnd_read_buffer_read */
static void
php_mysqlnd_read_buffer_read(MYSQLND_READ_BUFFER * buffer, size_t count, zend_uchar * dest)
{
if (buffer->len >= count) {
memcpy(dest, buffer->data + buffer->offset, count);
buffer->offset += count;
buffer->len -= count;
}
}
/* }}} */
/* {{{ php_mysqlnd_read_buffer_bytes_left */
static size_t
php_mysqlnd_read_buffer_bytes_left(MYSQLND_READ_BUFFER * buffer)
{
return buffer->len;
}
/* }}} */
/* {{{ php_mysqlnd_read_buffer_free */
static void
php_mysqlnd_read_buffer_free(MYSQLND_READ_BUFFER ** buffer)
{
DBG_ENTER("php_mysqlnd_read_buffer_free");
if (*buffer) {
mnd_efree((*buffer)->data);
mnd_efree(*buffer);
*buffer = NULL;
}
DBG_VOID_RETURN;
}
/* }}} */
/* {{{ php_mysqlnd_create_read_buffer */
static MYSQLND_READ_BUFFER *
mysqlnd_create_read_buffer(size_t count)
{
MYSQLND_READ_BUFFER * ret = mnd_emalloc(sizeof(MYSQLND_READ_BUFFER));
DBG_ENTER("mysqlnd_create_read_buffer");
ret->is_empty = php_mysqlnd_read_buffer_is_empty;
ret->read = php_mysqlnd_read_buffer_read;
ret->bytes_left = php_mysqlnd_read_buffer_bytes_left;
ret->free_buffer = php_mysqlnd_read_buffer_free;
ret->data = mnd_emalloc(count);
ret->size = ret->len = count;
ret->offset = 0;
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_net::read_compressed_packet_from_stream_and_fill_read_buffer */
static enum_func_status
MYSQLND_METHOD(mysqlnd_net, read_compressed_packet_from_stream_and_fill_read_buffer)
(MYSQLND_NET * net, size_t net_payload_size, MYSQLND_STATS * conn_stats, MYSQLND_ERROR_INFO * error_info)
{
size_t decompressed_size;
enum_func_status retval = PASS;
zend_uchar * compressed_data = NULL;
zend_uchar comp_header[COMPRESSED_HEADER_SIZE];
DBG_ENTER("mysqlnd_net::read_compressed_packet_from_stream_and_fill_read_buffer");
/* Read the compressed header */
if (FAIL == net->data->m.network_read_ex(net, comp_header, COMPRESSED_HEADER_SIZE, conn_stats, error_info)) {
DBG_RETURN(FAIL);
}
decompressed_size = uint3korr(comp_header);
/* When decompressed_size is 0, then the data is not compressed, and we have wasted 3 bytes */
/* we need to decompress the data */
if (decompressed_size) {
compressed_data = mnd_emalloc(net_payload_size);
if (FAIL == net->data->m.network_read_ex(net, compressed_data, net_payload_size, conn_stats, error_info)) {
retval = FAIL;
goto end;
}
net->uncompressed_data = mysqlnd_create_read_buffer(decompressed_size);
retval = net->data->m.decode(net->uncompressed_data->data, decompressed_size, compressed_data, net_payload_size);
if (FAIL == retval) {
goto end;
}
} else {
DBG_INF_FMT("The server decided not to compress the data. Our job is easy. Copying %u bytes", net_payload_size);
net->uncompressed_data = mysqlnd_create_read_buffer(net_payload_size);
if (FAIL == net->data->m.network_read_ex(net, net->uncompressed_data->data, net_payload_size, conn_stats, error_info)) {
retval = FAIL;
goto end;
}
}
end:
if (compressed_data) {
mnd_efree(compressed_data);
}
DBG_RETURN(retval);
}
/* }}} */
#endif /* MYSQLND_COMPRESSION_ENABLED */
/* {{{ mysqlnd_net::decode */
static enum_func_status
MYSQLND_METHOD(mysqlnd_net, decode)(zend_uchar * uncompressed_data, const size_t uncompressed_data_len,
const zend_uchar * const compressed_data, const size_t compressed_data_len)
{
#ifdef MYSQLND_COMPRESSION_ENABLED
int error;
uLongf tmp_complen = uncompressed_data_len;
DBG_ENTER("mysqlnd_net::decode");
error = uncompress(uncompressed_data, &tmp_complen, compressed_data, compressed_data_len);
DBG_INF_FMT("compressed data: decomp_len=%lu compressed_size="MYSQLND_SZ_T_SPEC, tmp_complen, compressed_data_len);
if (error != Z_OK) {
DBG_INF_FMT("decompression NOT successful. error=%d Z_OK=%d Z_BUF_ERROR=%d Z_MEM_ERROR=%d", error, Z_OK, Z_BUF_ERROR, Z_MEM_ERROR);
}
DBG_RETURN(error == Z_OK? PASS:FAIL);
#else
DBG_ENTER("mysqlnd_net::decode");
DBG_RETURN(FAIL);
#endif
}
/* }}} */
/* {{{ mysqlnd_net::encode */
static enum_func_status
MYSQLND_METHOD(mysqlnd_net, encode)(zend_uchar * compress_buffer, size_t * compress_buffer_len,
const zend_uchar * const uncompressed_data, const size_t uncompressed_data_len)
{
#ifdef MYSQLND_COMPRESSION_ENABLED
int error;
uLongf tmp_complen = *compress_buffer_len;
DBG_ENTER("mysqlnd_net::encode");
error = compress(compress_buffer, &tmp_complen, uncompressed_data, uncompressed_data_len);
if (error != Z_OK) {
DBG_INF_FMT("compression NOT successful. error=%d Z_OK=%d Z_BUF_ERROR=%d Z_MEM_ERROR=%d", error, Z_OK, Z_BUF_ERROR, Z_MEM_ERROR);
} else {
*compress_buffer_len = tmp_complen;
DBG_INF_FMT("compression successful. compressed size=%lu", tmp_complen);
}
DBG_RETURN(error == Z_OK? PASS:FAIL);
#else
DBG_ENTER("mysqlnd_net::encode");
DBG_RETURN(FAIL);
#endif
}
/* }}} */
/* {{{ mysqlnd_net::receive_ex */
static enum_func_status
MYSQLND_METHOD(mysqlnd_net, receive_ex)(MYSQLND_NET * const net, zend_uchar * const buffer, const size_t count,
MYSQLND_STATS * const conn_stats, MYSQLND_ERROR_INFO * const error_info)
{
size_t to_read = count;
zend_uchar * p = buffer;
DBG_ENTER("mysqlnd_net::receive_ex");
#ifdef MYSQLND_COMPRESSION_ENABLED
if (net->data->compressed) {
if (net->uncompressed_data) {
size_t to_read_from_buffer = MIN(net->uncompressed_data->bytes_left(net->uncompressed_data), to_read);
DBG_INF_FMT("reading "MYSQLND_SZ_T_SPEC" from uncompressed_data buffer", to_read_from_buffer);
if (to_read_from_buffer) {
net->uncompressed_data->read(net->uncompressed_data, to_read_from_buffer, (zend_uchar *) p);
p += to_read_from_buffer;
to_read -= to_read_from_buffer;
}
DBG_INF_FMT("left "MYSQLND_SZ_T_SPEC" to read", to_read);
if (TRUE == net->uncompressed_data->is_empty(net->uncompressed_data)) {
/* Everything was consumed. This should never happen here, but for security */
net->uncompressed_data->free_buffer(&net->uncompressed_data);
}
}
if (to_read) {
zend_uchar net_header[MYSQLND_HEADER_SIZE];
size_t net_payload_size;
zend_uchar packet_no;
if (FAIL == net->data->m.network_read_ex(net, net_header, MYSQLND_HEADER_SIZE, conn_stats, error_info)) {
DBG_RETURN(FAIL);
}
net_payload_size = uint3korr(net_header);
packet_no = uint1korr(net_header + 3);
if (net->compressed_envelope_packet_no != packet_no) {
DBG_ERR_FMT("Transport level: packets out of order. Expected %u received %u. Packet size="MYSQLND_SZ_T_SPEC,
net->compressed_envelope_packet_no, packet_no, net_payload_size);
php_error(E_WARNING, "Packets out of order. Expected %u received %u. Packet size="MYSQLND_SZ_T_SPEC,
net->compressed_envelope_packet_no, packet_no, net_payload_size);
DBG_RETURN(FAIL);
}
net->compressed_envelope_packet_no++;
#ifdef MYSQLND_DUMP_HEADER_N_BODY
DBG_INF_FMT("HEADER: hwd_packet_no=%u size=%3u", packet_no, (zend_ulong) net_payload_size);
#endif
/* Now let's read from the wire, decompress it and fill the read buffer */
net->data->m.read_compressed_packet_from_stream_and_fill_read_buffer(net, net_payload_size, conn_stats, error_info);
/*
Now a bit of recursion - read from the read buffer,
if the data which we have just read from the wire
is not enough, then the recursive call will try to
satisfy it until it is satisfied.
*/
DBG_RETURN(net->data->m.receive_ex(net, p, to_read, conn_stats, error_info));
}
DBG_RETURN(PASS);
}
#endif /* MYSQLND_COMPRESSION_ENABLED */
DBG_RETURN(net->data->m.network_read_ex(net, p, to_read, conn_stats, error_info));
}
/* }}} */
/* {{{ mysqlnd_net::set_client_option */
static enum_func_status
MYSQLND_METHOD(mysqlnd_net, set_client_option)(MYSQLND_NET * const net, enum mysqlnd_option option, const char * const value)
{
DBG_ENTER("mysqlnd_net::set_client_option");
DBG_INF_FMT("option=%u", option);
switch (option) {
case MYSQLND_OPT_NET_CMD_BUFFER_SIZE:
DBG_INF("MYSQLND_OPT_NET_CMD_BUFFER_SIZE");
if (*(unsigned int*) value < MYSQLND_NET_CMD_BUFFER_MIN_SIZE) {
DBG_RETURN(FAIL);
}
net->cmd_buffer.length = *(unsigned int*) value;
DBG_INF_FMT("new_length="MYSQLND_SZ_T_SPEC, net->cmd_buffer.length);
if (!net->cmd_buffer.buffer) {
net->cmd_buffer.buffer = mnd_pemalloc(net->cmd_buffer.length, net->persistent);
} else {
net->cmd_buffer.buffer = mnd_perealloc(net->cmd_buffer.buffer, net->cmd_buffer.length, net->persistent);
}
break;
case MYSQLND_OPT_NET_READ_BUFFER_SIZE:
DBG_INF("MYSQLND_OPT_NET_READ_BUFFER_SIZE");
net->data->options.net_read_buffer_size = *(unsigned int*) value;
DBG_INF_FMT("new_length="MYSQLND_SZ_T_SPEC, net->data->options.net_read_buffer_size);
break;
case MYSQL_OPT_CONNECT_TIMEOUT:
DBG_INF("MYSQL_OPT_CONNECT_TIMEOUT");
net->data->options.timeout_connect = *(unsigned int*) value;
break;
case MYSQLND_OPT_SSL_KEY:
{
zend_bool pers = net->persistent;
if (net->data->options.ssl_key) {
mnd_pefree(net->data->options.ssl_key, pers);
}
net->data->options.ssl_key = value? mnd_pestrdup(value, pers) : NULL;
break;
}
case MYSQLND_OPT_SSL_CERT:
{
zend_bool pers = net->persistent;
if (net->data->options.ssl_cert) {
mnd_pefree(net->data->options.ssl_cert, pers);
}
net->data->options.ssl_cert = value? mnd_pestrdup(value, pers) : NULL;
break;
}
case MYSQLND_OPT_SSL_CA:
{
zend_bool pers = net->persistent;
if (net->data->options.ssl_ca) {
mnd_pefree(net->data->options.ssl_ca, pers);
}
net->data->options.ssl_ca = value? mnd_pestrdup(value, pers) : NULL;
break;
}
case MYSQLND_OPT_SSL_CAPATH:
{
zend_bool pers = net->persistent;
if (net->data->options.ssl_capath) {
mnd_pefree(net->data->options.ssl_capath, pers);
}
net->data->options.ssl_capath = value? mnd_pestrdup(value, pers) : NULL;
break;
}
case MYSQLND_OPT_SSL_CIPHER:
{
zend_bool pers = net->persistent;
if (net->data->options.ssl_cipher) {
mnd_pefree(net->data->options.ssl_cipher, pers);
}
net->data->options.ssl_cipher = value? mnd_pestrdup(value, pers) : NULL;
break;
}
case MYSQLND_OPT_SSL_PASSPHRASE:
{
zend_bool pers = net->persistent;
if (net->data->options.ssl_passphrase) {
mnd_pefree(net->data->options.ssl_passphrase, pers);
}
net->data->options.ssl_passphrase = value? mnd_pestrdup(value, pers) : NULL;
break;
}
case MYSQL_OPT_SSL_VERIFY_SERVER_CERT:
{
enum mysqlnd_ssl_peer val = *((enum mysqlnd_ssl_peer *)value);
switch (val) {
case MYSQLND_SSL_PEER_VERIFY:
DBG_INF("MYSQLND_SSL_PEER_VERIFY");
break;
case MYSQLND_SSL_PEER_DONT_VERIFY:
DBG_INF("MYSQLND_SSL_PEER_DONT_VERIFY");
break;
case MYSQLND_SSL_PEER_DEFAULT:
DBG_INF("MYSQLND_SSL_PEER_DEFAULT");
val = MYSQLND_SSL_PEER_DEFAULT;
break;
default:
DBG_INF("default = MYSQLND_SSL_PEER_DEFAULT_ACTION");
val = MYSQLND_SSL_PEER_DEFAULT;
break;
}
net->data->options.ssl_verify_peer = val;
break;
}
case MYSQL_OPT_READ_TIMEOUT:
net->data->options.timeout_read = *(unsigned int*) value;
break;
#ifdef WHEN_SUPPORTED_BY_MYSQLI
case MYSQL_OPT_WRITE_TIMEOUT:
net->data->options.timeout_write = *(unsigned int*) value;
break;
#endif
case MYSQL_OPT_COMPRESS:
net->data->options.flags |= MYSQLND_NET_FLAG_USE_COMPRESSION;
break;
case MYSQL_SERVER_PUBLIC_KEY:
{
zend_bool pers = net->persistent;
if (net->data->options.sha256_server_public_key) {
mnd_pefree(net->data->options.sha256_server_public_key, pers);
}
net->data->options.sha256_server_public_key = value? mnd_pestrdup(value, pers) : NULL;
break;
}
default:
DBG_RETURN(FAIL);
}
DBG_RETURN(PASS);
}
/* }}} */
/* {{{ mysqlnd_net::consume_uneaten_data */
size_t
MYSQLND_METHOD(mysqlnd_net, consume_uneaten_data)(MYSQLND_NET * const net, enum php_mysqlnd_server_command cmd)
{
#ifdef MYSQLND_DO_WIRE_CHECK_BEFORE_COMMAND
/*
Switch to non-blocking mode and try to consume something from
the line, if possible, then continue. This saves us from looking for
the actual place where out-of-order packets have been sent.
If someone is completely sure that everything is fine, he can switch it
off.
*/
char tmp_buf[256];
size_t skipped_bytes = 0;
int opt = PHP_STREAM_OPTION_BLOCKING;
php_stream * net_stream = net->data->get_stream(net);
int was_blocked = net_stream->ops->set_option(net_stream, opt, 0, NULL);
DBG_ENTER("mysqlnd_net::consume_uneaten_data");
if (PHP_STREAM_OPTION_RETURN_ERR != was_blocked) {
/* Do a read of 1 byte */
int bytes_consumed;
do {
skipped_bytes += (bytes_consumed = php_stream_read(net_stream, tmp_buf, sizeof(tmp_buf)));
} while (bytes_consumed == sizeof(tmp_buf));
if (was_blocked) {
net_stream->ops->set_option(net_stream, opt, 1, NULL);
}
if (bytes_consumed) {
DBG_ERR_FMT("Skipped %u bytes. Last command %s hasn't consumed all the output from the server",
bytes_consumed, mysqlnd_command_to_text[net->last_command]);
php_error_docref(NULL, E_WARNING, "Skipped %u bytes. Last command %s hasn't "
"consumed all the output from the server",
bytes_consumed, mysqlnd_command_to_text[net->last_command]);
}
}
net->last_command = cmd;
DBG_RETURN(skipped_bytes);
#else
return 0;
#endif
}
/* }}} */
/*
in libmyusql, if cert and !key then key=cert
*/
/* {{{ mysqlnd_net::enable_ssl */
static enum_func_status
MYSQLND_METHOD(mysqlnd_net, enable_ssl)(MYSQLND_NET * const net)
{
#ifdef MYSQLND_SSL_SUPPORTED
php_stream_context * context = php_stream_context_alloc();
php_stream * net_stream = net->data->m.get_stream(net);
zend_bool any_flag = FALSE;
DBG_ENTER("mysqlnd_net::enable_ssl");
if (!context) {
DBG_RETURN(FAIL);
}
if (net->data->options.ssl_key) {
zval key_zval;
ZVAL_STRING(&key_zval, net->data->options.ssl_key);
php_stream_context_set_option(context, "ssl", "local_pk", &key_zval);
zval_ptr_dtor(&key_zval);
any_flag = TRUE;
}
if (net->data->options.ssl_cert) {
zval cert_zval;
ZVAL_STRING(&cert_zval, net->data->options.ssl_cert);
php_stream_context_set_option(context, "ssl", "local_cert", &cert_zval);
if (!net->data->options.ssl_key) {
php_stream_context_set_option(context, "ssl", "local_pk", &cert_zval);
}
zval_ptr_dtor(&cert_zval);
any_flag = TRUE;
}
if (net->data->options.ssl_ca) {
zval cafile_zval;
ZVAL_STRING(&cafile_zval, net->data->options.ssl_ca);
php_stream_context_set_option(context, "ssl", "cafile", &cafile_zval);
any_flag = TRUE;
}
if (net->data->options.ssl_capath) {
zval capath_zval;
ZVAL_STRING(&capath_zval, net->data->options.ssl_capath);
php_stream_context_set_option(context, "ssl", "capath", &capath_zval);
zval_ptr_dtor(&capath_zval);
any_flag = TRUE;
}
if (net->data->options.ssl_passphrase) {
zval passphrase_zval;
ZVAL_STRING(&passphrase_zval, net->data->options.ssl_passphrase);
php_stream_context_set_option(context, "ssl", "passphrase", &passphrase_zval);
zval_ptr_dtor(&passphrase_zval);
any_flag = TRUE;
}
if (net->data->options.ssl_cipher) {
zval cipher_zval;
ZVAL_STRING(&cipher_zval, net->data->options.ssl_cipher);
php_stream_context_set_option(context, "ssl", "ciphers", &cipher_zval);
zval_ptr_dtor(&cipher_zval);
any_flag = TRUE;
}
{
zval verify_peer_zval;
zend_bool verify;
if (net->data->options.ssl_verify_peer == MYSQLND_SSL_PEER_DEFAULT) {
net->data->options.ssl_verify_peer = any_flag? MYSQLND_SSL_PEER_DEFAULT_ACTION:MYSQLND_SSL_PEER_DONT_VERIFY;
}
verify = net->data->options.ssl_verify_peer == MYSQLND_SSL_PEER_VERIFY? TRUE:FALSE;
DBG_INF_FMT("VERIFY=%d", verify);
ZVAL_BOOL(&verify_peer_zval, verify);
php_stream_context_set_option(context, "ssl", "verify_peer", &verify_peer_zval);
php_stream_context_set_option(context, "ssl", "verify_peer_name", &verify_peer_zval);
if (net->data->options.ssl_verify_peer == MYSQLND_SSL_PEER_DONT_VERIFY) {
ZVAL_TRUE(&verify_peer_zval);
php_stream_context_set_option(context, "ssl", "allow_self_signed", &verify_peer_zval);
}
}
#if PHP_API_VERSION >= 20131106
php_stream_context_set(net_stream, context);
#else
php_stream_context_set(net_stream, context);
#endif
if (php_stream_xport_crypto_setup(net_stream, STREAM_CRYPTO_METHOD_TLS_CLIENT, NULL) < 0 ||
php_stream_xport_crypto_enable(net_stream, 1) < 0)
{
DBG_ERR("Cannot connect to MySQL by using SSL");
php_error_docref(NULL, E_WARNING, "Cannot connect to MySQL by using SSL");
DBG_RETURN(FAIL);
}
net->data->ssl = TRUE;
/*
get rid of the context. we are persistent and if this is a real pconn used by mysql/mysqli,
then the context would not survive cleaning of EG(regular_list), where it is registered, as a