forked from ClusterLabs/pacemaker
-
Notifications
You must be signed in to change notification settings - Fork 1
/
xml.c
4963 lines (4043 loc) · 140 KB
/
xml.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) 2004 Andrew Beekhof <andrew@beekhof.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <crm_internal.h>
#include <sys/param.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <time.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <ctype.h>
#include <crm/crm.h>
#include <crm/msg_xml.h>
#include <crm/common/xml.h>
#include <libxml/xmlreader.h>
#if HAVE_BZLIB_H
# include <bzlib.h>
#endif
#if HAVE_LIBXML2
# include <libxml/parser.h>
# include <libxml/tree.h>
# include <libxml/relaxng.h>
#endif
#if HAVE_LIBXSLT
# include <libxslt/xslt.h>
# include <libxslt/transform.h>
#endif
#define XML_BUFFER_SIZE 4096
#define XML_PARSER_DEBUG 0
#define BEST_EFFORT_STATUS 0
void
xml_log(int priority, const char *fmt, ...)
G_GNUC_PRINTF(2, 3);
static inline int
__get_prefix(const char *prefix, xmlNode *xml, char *buffer, int offset);
void
xml_log(int priority, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
qb_log_from_external_source_va(__FUNCTION__, __FILE__, fmt, priority, __LINE__, 0, ap);
va_end(ap);
}
typedef struct {
xmlRelaxNGPtr rng;
xmlRelaxNGValidCtxtPtr valid;
xmlRelaxNGParserCtxtPtr parser;
} relaxng_ctx_cache_t;
struct schema_s {
int type;
const char *name;
const char *location;
const char *transform;
int after_transform;
void *cache;
};
typedef struct {
int found;
const char *string;
} filter_t;
enum xml_private_flags {
xpf_none = 0x000,
xpf_dirty = 0x001,
xpf_deleted = 0x002,
xpf_created = 0x004,
xpf_tracking = 0x010,
xpf_processed = 0x020,
xpf_skip = 0x040,
xpf_moved = 0x080,
};
typedef struct xml_private_s
{
long check;
uint32_t flags;
GListPtr deleted_paths;
} xml_private_t;
/* *INDENT-OFF* */
struct schema_s known_schemas[] = {
/* 0 */ { 0, NULL, NULL, NULL, 1 },
/* 1 */ { 1, "pacemaker-0.6", "crm.dtd", "upgrade06.xsl", 4, NULL },
/* 2 */ { 1, "transitional-0.6", "crm-transitional.dtd", "upgrade06.xsl", 4, NULL },
/* 3 */ { 2, "pacemaker-0.7", "pacemaker-1.0.rng", NULL, 0, NULL },
/* 4 */ { 2, "pacemaker-1.0", "pacemaker-1.0.rng", NULL, 6, NULL },
/* 5 */ { 2, "pacemaker-1.1", "pacemaker-1.1.rng", NULL, 6, NULL },
/* 6 */ { 2, "pacemaker-1.2", "pacemaker-1.2.rng", NULL, 0, NULL },
/* 7 */ { 0, "none", NULL, NULL, 0, NULL },
};
static filter_t filter[] = {
{ 0, XML_ATTR_ORIGIN },
{ 0, XML_CIB_ATTR_WRITTEN },
{ 0, XML_ATTR_UPDATE_ORIG },
{ 0, XML_ATTR_UPDATE_CLIENT },
{ 0, XML_ATTR_UPDATE_USER },
};
/* *INDENT-ON* */
static int all_schemas = DIMOF(known_schemas);
static int max_schemas = DIMOF(known_schemas) - 2; /* skip back past 'none' */
static xmlNode *subtract_xml_comment(xmlNode * parent, xmlNode * left, xmlNode * right, gboolean * changed);
static xmlNode *find_xml_comment(xmlNode * root, xmlNode * search_comment);
static int add_xml_comment(xmlNode * parent, xmlNode * target, xmlNode * update);
#define CHUNK_SIZE 1024
#define TRACKING_CHANGES(xml) xml->doc?is_set(((xml_private_t *)xml->doc->_private)->flags, xpf_tracking):FALSE
#define buffer_print(buffer, max, offset, fmt, args...) do { \
int rc = (max); \
if(buffer) { \
rc = snprintf((buffer) + (offset), (max) - (offset), fmt, ##args); \
} \
if(rc < 0) { \
crm_perror(LOG_ERR, "snprintf failed"); \
(buffer)[(offset)] = 0; \
return; \
} else if(rc >= ((max) - (offset))) { \
(max) = QB_MAX(CHUNK_SIZE, (max) * 2); \
(buffer) = realloc((buffer), (max) + 1); \
} else { \
offset += rc; \
break; \
} \
} while(1);
static void
insert_prefix(int options, char **buffer, int *offset, int *max, int depth)
{
if (options & xml_log_option_formatted) {
size_t spaces = 2 * depth;
if ((*buffer) == NULL || spaces >= ((*max) - (*offset))) {
(*max) = QB_MAX(CHUNK_SIZE, (*max) * 2);
(*buffer) = realloc((*buffer), (*max) + 1);
}
memset((*buffer) + (*offset), ' ', spaces);
(*offset) += spaces;
}
}
static char *
get_schema_path(const char *file)
{
static const char *base = NULL;
if (base == NULL) {
base = getenv("PCMK_schema_directory");
}
if (base == NULL || strlen(base) == 0) {
base = CRM_DTD_DIRECTORY;
}
return crm_concat(base, file, '/');
}
static void
set_parent_flag(xmlNode *xml, long flag)
{
for(; xml; xml = xml->parent) {
xml_private_t *p = xml->_private;
if(p == NULL) {
/* During calls to xmlDocCopyNode(), _private will be unset for parent nodes */
} else {
p->flags |= flag;
/* crm_trace("Setting flag %x due to %s[@id=%s]", flag, xml->name, ID(xml)); */
}
}
}
static void
set_doc_flag(xmlNode *xml, long flag)
{
if(xml && xml->doc && xml->doc->_private){
/* During calls to xmlDocCopyNode(), xml->doc may be unset */
xml_private_t *p = xml->doc->_private;
p->flags |= flag;
/* crm_trace("Setting flag %x due to %s[@id=%s]", flag, xml->name, ID(xml)); */
}
}
static void
crm_node_dirty(xmlNode *xml)
{
set_doc_flag(xml, xpf_dirty);
set_parent_flag(xml, xpf_dirty);
}
static void
crm_node_created(xmlNode *xml)
{
xmlNode *cIter = NULL;
xml_private_t *p = xml->_private;
if(p && TRACKING_CHANGES(xml)) {
if(is_not_set(p->flags, xpf_created)) {
p->flags |= xpf_created;
crm_node_dirty(xml);
}
for (cIter = __xml_first_child(xml); cIter != NULL; cIter = __xml_next(cIter)) {
crm_node_created(cIter);
}
}
}
static void
crm_attr_dirty(xmlAttr *a)
{
xmlNode *parent = a->parent;
xml_private_t *p = NULL;
p = a->_private;
p->flags |= xpf_dirty;
p->flags = (p->flags & ~xpf_deleted);
/* crm_trace("Setting flag %x due to %s[@id=%s, @%s=%s]", */
/* xpf_dirty, parent?parent->name:NULL, ID(parent), a->name, a->children->content); */
crm_node_dirty(parent);
}
int get_tag_name(const char *input, size_t offset, size_t max);
int get_attr_name(const char *input, size_t offset, size_t max);
int get_attr_value(const char *input, size_t offset, size_t max);
gboolean can_prune_leaf(xmlNode * xml_node);
void diff_filter_context(int context, int upper_bound, int lower_bound,
xmlNode * xml_node, xmlNode * parent);
int in_upper_context(int depth, int context, xmlNode * xml_node);
int add_xml_object(xmlNode * parent, xmlNode * target, xmlNode * update, gboolean as_diff);
static inline const char *
crm_attr_value(xmlAttr * attr)
{
if (attr == NULL || attr->children == NULL) {
return NULL;
}
return (const char *)attr->children->content;
}
static inline xmlAttr *
crm_first_attr(xmlNode * xml)
{
if (xml == NULL) {
return NULL;
}
return xml->properties;
}
static void
pcmkRegisterNode(xmlNodePtr node)
{
xml_private_t *p = NULL;
switch(node->type) {
case XML_ELEMENT_NODE:
case XML_DOCUMENT_NODE:
case XML_ATTRIBUTE_NODE:
case XML_COMMENT_NODE:
p = calloc(1, sizeof(xml_private_t));
p->check = (long) 0x81726354;
/* Flags will be reset if necessary when tracking is enabled */
p->flags |= (xpf_dirty|xpf_created);
node->_private = p;
break;
case XML_TEXT_NODE:
break;
default:
/* Ignore */
crm_trace("Ignoring %p %d", node, node->type);
break;
}
if(p && TRACKING_CHANGES(node)) {
/* XML_ELEMENT_NODE doesn't get picked up here, node->doc is
* not hooked up at the point we are called
*/
set_doc_flag(node, xpf_dirty);
crm_node_dirty(node);
}
}
static void
pcmkDeregisterNode(xmlNodePtr node)
{
xml_private_t *p = node->_private;
if(p) {
CRM_ASSERT(node->_private != NULL);
CRM_ASSERT(p->check == (long) 0x81726354);
if(p->deleted_paths) {
g_list_free_full(p->deleted_paths, free);
}
free(node->_private);
}
}
void
xml_track_changes(xmlNode * xml)
{
xml_accept_changes(xml);
crm_trace("Tracking changes to %p", xml);
set_doc_flag(xml, xpf_tracking);
}
bool xml_tracking_changes(xmlNode * xml)
{
if(xml == NULL) {
return FALSE;
} else if(is_set(((xml_private_t *)xml->doc->_private)->flags, xpf_tracking)) {
return TRUE;
}
return FALSE;
}
bool xml_document_dirty(xmlNode *xml)
{
if(xml != NULL && xml->doc && xml->doc->_private) {
xml_private_t *doc = xml->doc->_private;
return is_set(doc->flags, xpf_dirty);
}
return FALSE;
}
/*
<diff format="2.0">
<version>
<source admin_epoch="1" epoch="2" num_updates="3"/>
<target admin_epoch="1" epoch="3" num_updates="0"/>
</version>
<change operation="add" xpath="/cib/configuration/nodes">
<node id="node2" uname="node2" description="foo"/>
</change>
<change operation="add" xpath="/cib/configuration/nodes/node[node2]">
<instance_attributes id="nodes-node"><!-- NOTE: can be a full tree -->
<nvpair id="nodes-node2-ram" name="ram" value="1024M"/>
</instance_attributes>
</change>
<change operation="update" xpath="/cib/configuration/nodes[@id='node2']">
<change-list>
<change-attr operation="set" name="type" value="member"/>
<change-attr operation="unset" name="description"/>
</change-list>
<change-result>
<node id="node2" uname="node2" type="member"/><!-- NOTE: not recursive -->
</change-result>
</change>
<change operation="delete" xpath="/cib/configuration/nodes/node[@id='node3'] /">
<change operation="update" xpath="/cib/configuration/resources/group[@id='g1']">
<change-list>
<change-attr operation="set" name="description" value="some grabage here"/>
</change-list>
<change-result>
<group id="g1" description="some grabage here"/><!-- NOTE: not recursive -->
</change-result>
</change>
<change operation="update" xpath="/cib/status/node_state[@id='node2]/lrm[@id='node2']/lrm_resources/lrm_resource[@id='Fence']">
<change-list>
<change-attr operation="set" name="oper" value="member"/>
<change-attr operation="set" name="operation_key" value="Fence_start_0"/>
<change-attr operation="set" name="operation" value="start"/>
<change-attr operation="set" name="transition-key" value="2:-1:0:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"/>
<change-attr operation="set" name="transition-magic" value="0:0;2:-1:0:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"/>
<change-attr operation="set" name="call-id" value="2"/>
<change-attr operation="set" name="rc-code" value="0"/>
</change-list>
<change-result>
<lrm_rsc_op id="Fence_last_0" operation_key="Fence_start_0" operation="start" crm-debug-origin="crm_simulate" transition-key="2:-1:0:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" transition-magic="0:0;2:-1:0:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" call-id="2" rc-code="0" op-status="0" interval="0" exec-time="0" queue-time="0" op-digest="f2317cad3d54cec5d7d7aa7d0bf35cf8"/>
</change-result>
</change>
</diff>
*/
static int __xml_offset(xmlNode *xml)
{
int position = 0;
xmlNode *cIter = NULL;
for(cIter = xml; cIter->prev; cIter = cIter->prev) {
xml_private_t *p = cIter->_private;
if(is_not_set(p->flags, xpf_skip)) {
position++;
}
}
return position;
}
static void
__xml_build_changes(xmlNode * xml, xmlNode *patchset)
{
xmlNode *cIter = NULL;
xmlAttr *pIter = NULL;
xmlNode *change = NULL;
xml_private_t *p = xml->_private;
if(patchset && is_set(p->flags, xpf_created)) {
int offset = 0;
char buffer[XML_BUFFER_SIZE];
if(__get_prefix(NULL, xml->parent, buffer, offset) > 0) {
int position = __xml_offset(xml);
change = create_xml_node(patchset, XML_DIFF_CHANGE);
crm_xml_add(change, XML_DIFF_OP, "create");
crm_xml_add(change, XML_DIFF_PATH, buffer);
crm_xml_add_int(change, XML_DIFF_POSITION, position);
add_node_copy(change, xml);
}
return;
}
for (pIter = crm_first_attr(xml); pIter != NULL; pIter = pIter->next) {
xmlNode *attr = NULL;
p = pIter->_private;
if(is_not_set(p->flags, xpf_deleted) && is_not_set(p->flags, xpf_dirty)) {
continue;
}
if(change == NULL) {
int offset = 0;
char buffer[XML_BUFFER_SIZE];
if(__get_prefix(NULL, xml, buffer, offset) > 0) {
change = create_xml_node(patchset, XML_DIFF_CHANGE);
crm_xml_add(change, XML_DIFF_OP, "modify");
crm_xml_add(change, XML_DIFF_PATH, buffer);
change = create_xml_node(change, XML_DIFF_LIST);
}
}
attr = create_xml_node(change, XML_DIFF_ATTR);
crm_xml_add(attr, XML_NVPAIR_ATTR_NAME, (const char *)pIter->name);
if(p->flags & xpf_deleted) {
crm_xml_add(attr, XML_DIFF_OP, "unset");
} else {
const char *value = crm_element_value(xml, (const char *)pIter->name);
crm_xml_add(attr, XML_DIFF_OP, "set");
crm_xml_add(attr, XML_NVPAIR_ATTR_VALUE, value);
}
}
if(change) {
xmlNode *result = NULL;
change = create_xml_node(change->parent, XML_DIFF_RESULT);
result = create_xml_node(change, (const char *)xml->name);
for (pIter = crm_first_attr(xml); pIter != NULL; pIter = pIter->next) {
const char *value = crm_element_value(xml, (const char *)pIter->name);
crm_xml_add(result, (const char *)pIter->name, value);
}
}
for (cIter = __xml_first_child(xml); cIter != NULL; cIter = __xml_next(cIter)) {
__xml_build_changes(cIter, patchset);
}
p = xml->_private;
if(patchset && is_set(p->flags, xpf_moved)) {
int offset = 0;
char buffer[XML_BUFFER_SIZE];
crm_trace("%s.%s moved to position %d", xml->name, ID(xml), __xml_offset(xml));
if(__get_prefix(NULL, xml, buffer, offset) > 0) {
change = create_xml_node(patchset, XML_DIFF_CHANGE);
crm_xml_add(change, XML_DIFF_OP, "move");
crm_xml_add(change, XML_DIFF_PATH, buffer);
crm_xml_add_int(change, XML_DIFF_POSITION, __xml_offset(xml));
}
}
}
static void
__xml_accept_changes(xmlNode * xml)
{
xmlNode *cIter = NULL;
xmlAttr *pIter = NULL;
xml_private_t *p = xml->_private;
p->flags = xpf_none;
pIter = crm_first_attr(xml);
while (pIter != NULL) {
const xmlChar *name = pIter->name;
p = pIter->_private;
pIter = pIter->next;
if(p->flags & xpf_deleted) {
xml_remove_prop(xml, (const char *)name);
} else {
p->flags = xpf_none;
}
}
for (cIter = __xml_first_child(xml); cIter != NULL; cIter = __xml_next(cIter)) {
__xml_accept_changes(cIter);
}
}
static bool
is_config_change(xmlNode *xml)
{
GListPtr gIter = NULL;
xml_private_t *p = NULL;
xmlNode *config = first_named_child(xml, XML_CIB_TAG_CONFIGURATION);
if(config) {
p = config->_private;
}
if(p && is_set(p->flags, xpf_dirty)) {
return TRUE;
}
if(xml->doc && xml->doc->_private) {
p = xml->doc->_private;
for(gIter = p->deleted_paths; gIter; gIter = gIter->next) {
char *path = gIter->data;
if(strstr(path, "/"XML_TAG_CIB"/"XML_CIB_TAG_CONFIGURATION) != NULL) {
return TRUE;
}
}
}
return FALSE;
}
static void
xml_repair_v1_diff(xmlNode * last, xmlNode * next, xmlNode * local_diff, gboolean changed)
{
int lpc = 0;
xmlNode *cib = NULL;
xmlNode *diff_child = NULL;
const char *tag = NULL;
const char *vfields[] = {
XML_ATTR_GENERATION_ADMIN,
XML_ATTR_GENERATION,
XML_ATTR_NUMUPDATES,
};
if (local_diff == NULL) {
crm_trace("Nothing to do");
return;
}
tag = "diff-removed";
diff_child = find_xml_node(local_diff, tag, FALSE);
if (diff_child == NULL) {
diff_child = create_xml_node(local_diff, tag);
}
tag = XML_TAG_CIB;
cib = find_xml_node(diff_child, tag, FALSE);
if (cib == NULL) {
cib = create_xml_node(diff_child, tag);
}
for(lpc = 0; last && lpc < DIMOF(vfields); lpc++){
const char *value = crm_element_value(last, vfields[lpc]);
crm_xml_add(diff_child, vfields[lpc], value);
if(changed || lpc == 2) {
crm_xml_add(cib, vfields[lpc], value);
}
}
tag = "diff-added";
diff_child = find_xml_node(local_diff, tag, FALSE);
if (diff_child == NULL) {
diff_child = create_xml_node(local_diff, tag);
}
tag = XML_TAG_CIB;
cib = find_xml_node(diff_child, tag, FALSE);
if (cib == NULL) {
cib = create_xml_node(diff_child, tag);
}
for(lpc = 0; next && lpc < DIMOF(vfields); lpc++){
const char *value = crm_element_value(next, vfields[lpc]);
crm_xml_add(diff_child, vfields[lpc], value);
}
if (next) {
xmlAttrPtr xIter = NULL;
for (xIter = next->properties; xIter; xIter = xIter->next) {
const char *p_name = (const char *)xIter->name;
const char *p_value = crm_element_value(next, p_name);
xmlSetProp(cib, (const xmlChar *)p_name, (const xmlChar *)p_value);
}
}
crm_log_xml_explicit(local_diff, "Repaired-diff");
}
static xmlNode *
xml_create_patchset_v1(xmlNode *source, xmlNode *target, bool config)
{
xmlNode *patchset = diff_xml_object(source, target, TRUE);
if(patchset) {
CRM_LOG_ASSERT(xml_document_dirty(target));
xml_repair_v1_diff(source, target, patchset, config);
crm_xml_add(patchset, "format", "1");
}
return patchset;
}
static xmlNode *
xml_create_patchset_v2(xmlNode *source, xmlNode *target)
{
int lpc = 0;
GListPtr gIter = NULL;
xml_private_t *doc = NULL;
xmlNode *v = NULL;
xmlNode *version = NULL;
xmlNode *patchset = NULL;
const char *vfields[] = {
XML_ATTR_GENERATION_ADMIN,
XML_ATTR_GENERATION,
XML_ATTR_NUMUPDATES,
};
CRM_ASSERT(target);
if(xml_document_dirty(target) == FALSE) {
return NULL;
}
CRM_ASSERT(target->doc);
doc = target->doc->_private;
patchset = create_xml_node(NULL, XML_TAG_DIFF);
crm_xml_add_int(patchset, "format", 2);
version = create_xml_node(patchset, XML_DIFF_VERSION);
v = create_xml_node(version, XML_DIFF_VSOURCE);
for(lpc = 0; lpc < DIMOF(vfields); lpc++){
const char *value = crm_element_value(source, vfields[lpc]);
if(value == NULL) {
value = "1";
}
crm_xml_add(v, vfields[lpc], value);
}
v = create_xml_node(version, XML_DIFF_VTARGET);
for(lpc = 0; lpc < DIMOF(vfields); lpc++){
const char *value = crm_element_value(target, vfields[lpc]);
if(value == NULL) {
value = "1";
}
crm_xml_add(v, vfields[lpc], value);
}
for(gIter = doc->deleted_paths; gIter; gIter = gIter->next) {
xmlNode *change = create_xml_node(patchset, XML_DIFF_CHANGE);
crm_xml_add(change, XML_DIFF_OP, "delete");
crm_xml_add(change, XML_DIFF_PATH, gIter->data);
}
__xml_build_changes(target, patchset);
return patchset;
}
static gboolean patch_legacy_mode(void)
{
static gboolean init = TRUE;
static gboolean legacy = FALSE;
if(init) {
init = FALSE;
legacy = daemon_option_enabled("legacy", "cib");
if(legacy) {
crm_notice("Enabled legacy mode");
}
}
return legacy;
}
xmlNode *
xml_create_patchset(int format, xmlNode *source, xmlNode *target, bool *config_changed, bool manage_version, bool with_digest)
{
int counter = 0;
bool config = FALSE;
xmlNode *patch = NULL;
const char *version = crm_element_value(source, XML_ATTR_CRM_VERSION);
if(xml_document_dirty(target) == FALSE) {
crm_trace("No change %d", format);
return NULL; /* No change */
}
config = is_config_change(target);
if(config_changed) {
*config_changed = config;
}
if(manage_version && config) {
crm_trace("Config changed %d", format);
crm_xml_add(target, XML_ATTR_NUMUPDATES, "0");
crm_element_value_int(target, XML_ATTR_GENERATION, &counter);
crm_xml_add_int(target, XML_ATTR_GENERATION, counter+1);
} else if(manage_version) {
crm_trace("Status changed %d", format);
crm_element_value_int(target, XML_ATTR_NUMUPDATES, &counter);
crm_xml_add_int(target, XML_ATTR_NUMUPDATES, counter+1);
}
if(format == 0) {
if(patch_legacy_mode()) {
format = 1;
} else if(compare_version("3.0.8", version) < 0) {
format = 2;
} else {
format = 1;
}
crm_trace("Using patch format %d for version: %s", format, version);
}
switch(format) {
case 1:
patch = xml_create_patchset_v1(source, target, config);
with_digest = TRUE;
break;
case 2:
patch = xml_create_patchset_v2(source, target);
break;
default:
crm_err("Unknown patch format: %d", format);
return NULL;
}
if(patch && with_digest) {
char *digest = calculate_xml_versioned_digest(target, FALSE, TRUE, version);
crm_xml_add(patch, XML_ATTR_DIGEST, digest);
free(digest);
}
return patch;
}
void
xml_log_patchset(uint8_t log_level, const char *function, xmlNode * patchset)
{
int format = 1;
xmlNode *child = NULL;
xmlNode *added = NULL;
xmlNode *removed = NULL;
gboolean is_first = TRUE;
int add[] = { 0, 0, 0 };
int del[] = { 0, 0, 0 };
const char *fmt = NULL;
const char *digest = NULL;
int options = xml_log_option_formatted;
static struct qb_log_callsite *patchset_cs = NULL;
if (patchset_cs == NULL) {
patchset_cs = qb_log_callsite_get(function, __FILE__, "xml-patchset", log_level, __LINE__, 0);
}
if (patchset == NULL) {
crm_trace("Empty patch");
return;
} else if (crm_is_callsite_active(patchset_cs, log_level, 0) == FALSE) {
return;
}
xml_patch_versions(patchset, add, del);
fmt = crm_element_value(patchset, "format");
digest = crm_element_value(patchset, XML_ATTR_DIGEST);
if (add[2] != del[2] || add[1] != del[1] || add[0] != del[0]) {
do_crm_log_alias(log_level, __FILE__, function, __LINE__,
"Diff: --- %d.%d.%d %s", del[0], del[1], del[2], fmt);
do_crm_log_alias(log_level, __FILE__, function, __LINE__,
"Diff: +++ %d.%d.%d %s", add[0], add[1], add[2], digest);
} else if (patchset != NULL && (add[0] || add[1] || add[2])) {
do_crm_log(log_level,
"%s: Local-only Change: %d.%d.%d", function ? function : "",
add[0], add[1], add[2]);
}
crm_element_value_int(patchset, "format", &format);
if(format == 2) {
xml_log_changes(log_level, function, patchset);
return;
}
if (log_level < LOG_DEBUG || function == NULL) {
options |= xml_log_option_diff_short;
}
removed = find_xml_node(patchset, "diff-removed", FALSE);
for (child = __xml_first_child(removed); child != NULL; child = __xml_next(child)) {
log_data_element(log_level, __FILE__, function, __LINE__, "- ", child, 0,
options | xml_log_option_diff_minus);
if (is_first) {
is_first = FALSE;
} else {
do_crm_log(log_level, " --- ");
}
}
is_first = TRUE;
added = find_xml_node(patchset, "diff-added", FALSE);
for (child = __xml_first_child(added); child != NULL; child = __xml_next(child)) {
log_data_element(log_level, __FILE__, function, __LINE__, "+ ", child, 0,
options | xml_log_option_diff_plus);
if (is_first) {
is_first = FALSE;
} else {
do_crm_log(log_level, " +++ ");
}
}
}
void
xml_log_changes(uint8_t log_level, const char *function, xmlNode * xml)
{
GListPtr gIter = NULL;
xml_private_t *doc = NULL;
CRM_ASSERT(xml);
CRM_ASSERT(xml->doc);
doc = xml->doc->_private;
if(is_not_set(doc->flags, xpf_dirty)) {
return;
}
for(gIter = doc->deleted_paths; gIter; gIter = gIter->next) {
do_crm_log(log_level, "-- %s", gIter->data);
}
log_data_element(log_level, __FILE__, function, __LINE__, "- ", xml, 0,
xml_log_option_formatted|xml_log_option_dirty_del);
log_data_element(log_level, __FILE__, function, __LINE__, "+ ", xml, 0,
xml_log_option_formatted|xml_log_option_dirty_add);
}
void
xml_accept_changes(xmlNode * xml)
{
xmlNode *top = NULL;
xml_private_t *doc = NULL;
if(xml == NULL) {
return;
}
crm_trace("Accepting changes to %p", xml);
doc = xml->doc->_private;
top = xmlDocGetRootElement(xml->doc);
doc->flags = (doc->flags & ~xpf_tracking);
if(is_not_set(doc->flags, xpf_dirty)) {
return;
}
__xml_accept_changes(top);
doc->flags = (doc->flags & ~xpf_dirty);
g_list_free_full(doc->deleted_paths, free);
doc->deleted_paths = NULL;
}
/* Simplified version for applying v1-style XML patches */
static void
__subtract_xml_object(xmlNode * target, xmlNode * patch)
{
xmlNode *patch_child = NULL;
xmlNode *target_child = NULL;
xmlAttrPtr xIter = NULL;
char *id = NULL;
const char *name = NULL;
const char *value = NULL;
if (target == NULL || patch == NULL) {
return;
}
if (target->type == XML_COMMENT_NODE) {
gboolean dummy;
subtract_xml_comment(target->parent, target, patch, &dummy);
}
name = crm_element_name(target);
CRM_CHECK(name != NULL, return);
CRM_CHECK(safe_str_eq(crm_element_name(target), crm_element_name(patch)), return);
CRM_CHECK(safe_str_eq(ID(target), ID(patch)), return);
/* check for XML_DIFF_MARKER in a child */
id = crm_element_value_copy(target, XML_ATTR_ID);
value = crm_element_value(patch, XML_DIFF_MARKER);
if (value != NULL && strcmp(value, "removed:top") == 0) {
crm_trace("We are the root of the deletion: %s.id=%s", name, id);
free_xml(target);
free(id);
return;
}
for (xIter = crm_first_attr(patch); xIter != NULL; xIter = xIter->next) {
const char *p_name = (const char *)xIter->name;
xml_remove_prop(target, p_name);
}
/* Restore the id field, it is never allowed to change */
crm_xml_add(target, XML_ATTR_ID, id);
/* changes to child objects */
for (target_child = __xml_first_child(target); target_child != NULL;
target_child = __xml_next(target_child)) {
if (target_child->type == XML_COMMENT_NODE) {
patch_child = find_xml_comment(patch, target_child);
} else {
patch_child = find_entity(patch, crm_element_name(target_child), ID(target_child));
}
__subtract_xml_object(target_child, patch_child);
}
free(id);
}