summaryrefslogtreecommitdiff
path: root/configmgr/source/readdconflayer.cxx
blob: 62e6a65912a6991be5af10329a3070199ddeb8c6 (plain)
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
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */

#include <sal/config.h>

#include <cassert>
#include <cstddef>
#include <cstring>
#include <limits>
#include <type_traits>

#include <dconf/dconf.h>

#include <com/sun/star/uno/Sequence.hxx>

#include <data.hxx>
#include <groupnode.hxx>
#include <localizedpropertynode.hxx>
#include <localizedvaluenode.hxx>
#include <nodemap.hxx>
#include <propertynode.hxx>
#include <readdconflayer.hxx>
#include <setnode.hxx>

// component-data is encoded in dconf as follows:
//
// * The node hierarchy (starting at component nodes with names like
//   "org.openoffice.Setup") maps to dconf paths underneath
//   "/org/libreoffice/registry/".
//
// * Component, group, set, and localized property nodes map to dconf dirs
//   (except for removal of set elements, see below), while property and
//   localized value nodes map to dconf keys.
//
// * The names of nodes that are not set elements are used directly as dconf
//   path segments.  (The syntax for node names is any non-empty sequences of
//   any Unicode scalar values except U+0000--0008, U+000B--000C, U+000E--001F,
//   U+002F SOLIDUS, and U+FFFE--FFFF.  TODO: "<aruiz> sberg, in general I think
//   it'd be nice if you used path separators instead of dots though, they have
//   meaning in dconf/gvdb world :-)"?)
//
// * Set element "fuse" and "replace" operations are encoded as dconf path
//   segments as concatenations
//
//     N ; T ; O
//
//   where ";" represents U+003B SEMICOLON; N is an encoding of the node name,
//   where each occurrence of U+003B SEMICOLON is replaced by the three
//   characters "\3B" and each ocurrence of U+005C REVERSE SOLIDUS is replaced
//   by the three characters "\5C"; T is an encoding of the full template name,
//   where each occurrence of U+002F SOLIDUS is replaced by the three characters
//   "\2F", each occurrence of U+003B SEMICOLON is replaced by the three
//   characters "\3B", and each ocurrence of U+005C REVERSE SOLIDUS is replaced
//   by the three characters "\5C"; and O is "fuse" or "replace", respectively.
//
// * Set element and property "remove" operations are encoded as dconf key path
//   segments directly using the node name, and the associated value being a
//   GVariant of empty tuple type.
//
// * Property and localized property value "fuse" operations map to GVariant
//   instances as follows:
//
// ** Non-nillable boolean values map to GVariant boolean instances.
//
// ** Non-nillable short values map to GVariant int16 instances.
//
// ** Non-nillable int values map to GVariant int32 instances.
//
// ** Non-nillable long values map to GVariant int64 instances.
//
// ** Non-nillable double values map to GVariant double instances.
//
// ** Non-nillable string values map to GVariant string instances, with the
//    following encoding: each occurrence of U+0000 NULL is replace by the three
//    characters "\00" and each occurrence of U+005C REVERSE SOLIDUS is replaced
//    by the three characters "\5C".
//
// ** Non-nillable hexbinary values map to GVariant byte array instances.
//
// ** Non-nillable list values recursively map to GVariant array instances.
//
// ** Nillable values recursively map to GVariant maybe instances.
//
// TODO: support "finalized", "mandatory", and "external"?

namespace configmgr {

namespace {

template<typename T> class GObjectHolder {
public:
    explicit GObjectHolder(T * object): object_(object) {}

    ~GObjectHolder() {
        if (object_ != nullptr) {
            g_object_unref(object_);
        }
    }

    T * get() const { return object_; }

private:
    GObjectHolder(GObjectHolder &) = delete;
    void operator =(GObjectHolder) = delete;

    T * object_;
};

class GVariantHolder {
public:
    explicit GVariantHolder(GVariant * variant): variant_(variant) {}

    ~GVariantHolder() { unref(); }

    void reset(GVariant * variant) {
        unref();
        variant_ = variant;
    }

    GVariant * get() const { return variant_; }

private:
    GVariantHolder(GVariantHolder &) = delete;
    void operator =(GVariantHolder) = delete;

    void unref() {
        if (variant_ != nullptr) {
            g_variant_unref(variant_);
        }
    }

    GVariant * variant_;
};

class StringArrayHolder {
public:
    explicit StringArrayHolder(gchar ** array): array_(array) {}

    ~StringArrayHolder() { g_strfreev(array_); }

    gchar ** get() const { return array_; }

private:
    StringArrayHolder(StringArrayHolder &) = delete;
    void operator =(StringArrayHolder) = delete;

    gchar ** array_;
};

bool decode(OUString * string, bool nul, bool slash, bool semicolon) {
    for (sal_Int32 i = 0;; ++i) {
        i = string->indexOf('\\', i);
        if (i == -1) {
            return true;
        }
        if (nul && string->match("00", i + 1)) {
            *string = string->replaceAt(i, 3, OUString(sal_Unicode(0)));
        } else if (slash && string->match("2F", i + 1)) {
            *string = string->replaceAt(i, 3, "/");
        } else if (semicolon && string->match("3B", i + 1)) {
            *string = string->replaceAt(i, 3, ";");
        } else if (string->match("5C", i + 1)) {
            *string = string->replaceAt(i + 1, 2, "");
        } else {
            SAL_WARN("configmgr.dconf", "bad escape in " << *string);
            return false;
        }
    }
}

bool getBoolean(
    OString const & key, GVariantHolder const & variant, css::uno::Any * value)
{
    assert(value != nullptr);
    if (!g_variant_is_of_type(variant.get(), G_VARIANT_TYPE_BOOLEAN)) {
        SAL_WARN(
            "configmgr.dconf",
            "bad key " << key << " does not match boolean property");
        return false;
    }
    *value <<= bool(g_variant_get_boolean(variant.get()));
    return true;
}

bool getShort(
    OString const & key, GVariantHolder const & variant, css::uno::Any * value)
{
    assert(value != nullptr);
    if (!g_variant_is_of_type(variant.get(), G_VARIANT_TYPE_INT16)) {
        SAL_WARN(
            "configmgr.dconf",
            "bad key " << key << " does not match short property");
        return false;
    }
    *value <<= sal_Int16(g_variant_get_int16(variant.get()));
    return true;
}

bool getInt(
    OString const & key, GVariantHolder const & variant, css::uno::Any * value)
{
    assert(value != nullptr);
    if (!g_variant_is_of_type(variant.get(), G_VARIANT_TYPE_INT32)) {
        SAL_WARN(
            "configmgr.dconf",
            "bad key " << key << " does not match int property");
        return false;
    }
    *value <<= sal_Int32(g_variant_get_int32(variant.get()));
    return true;
}

bool getLong(
    OString const & key, GVariantHolder const & variant, css::uno::Any * value)
{
    assert(value != nullptr);
    if (!g_variant_is_of_type(variant.get(), G_VARIANT_TYPE_INT64)) {
        SAL_WARN(
            "configmgr.dconf",
            "bad key " << key << " does not match long property");
        return false;
    }
    *value <<= sal_Int64(g_variant_get_int64(variant.get()));
    return true;
}

bool getDouble(
    OString const & key, GVariantHolder const & variant, css::uno::Any * value)
{
    assert(value != nullptr);
    if (!g_variant_is_of_type(variant.get(), G_VARIANT_TYPE_DOUBLE)) {
        SAL_WARN(
            "configmgr.dconf",
            "bad key " << key << " does not match double property");
        return false;
    }
    *value <<= double(g_variant_get_double(variant.get()));
    return true;
}

bool getStringValue(
    OString const & key, GVariantHolder const & variant, OUString * value)
{
    assert(value != nullptr);
    if (!g_variant_is_of_type(variant.get(), G_VARIANT_TYPE_STRING)) {
        SAL_WARN(
            "configmgr.dconf",
            "bad key " << key << " does not match string property");
        return false;
    }
    gsize n;
    char const * p = g_variant_get_string(variant.get(), &n);
    if (n > static_cast<typename std::make_unsigned<sal_Int32>::type>(
            std::numeric_limits<sal_Int32>::max()))
    {
        SAL_WARN("configmgr.dconf", "too long string value for key " << key);
        return false;
    }
    if (!rtl_convertStringToUString(
            &value->pData, p, static_cast<sal_Int32>(n), RTL_TEXTENCODING_UTF8,
            (RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_ERROR
             | RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_ERROR
             | RTL_TEXTTOUNICODE_FLAGS_INVALID_ERROR)))
    {
        SAL_WARN("configmgr.dconf", "non--UTF-8 string value for key " << key);
        return false;
    }
    return decode(value, true, false, false);
}

bool getString(
    OString const & key, GVariantHolder const & variant, css::uno::Any * value)
{
    assert(value != nullptr);
    OUString v;
    if (!getStringValue(key, variant, &v)) {
        return false;
    }
    *value <<= v;
    return true;
}

bool getHexbinaryValue(
    OString const & key, GVariantHolder const & variant,
    css::uno::Sequence<sal_Int8> * value)
{
    assert(value != nullptr);
    if (std::strcmp(g_variant_get_type_string(variant.get()), "ay") != 0) {
        SAL_WARN(
            "configmgr.dconf",
            "bad key " << key << " does not match hexbinary property");
        return false;
    }
    gsize n;
    gconstpointer p = g_variant_get_fixed_array(
        variant.get(), &n, sizeof (guchar));
    if (n > static_cast<typename std::make_unsigned<sal_Int32>::type>(
            std::numeric_limits<sal_Int32>::max()))
    {
        SAL_WARN("configmgr.dconf", "too long hexbinary value for key " << key);
        return false;
    }
    value->realloc(static_cast<sal_Int32>(n));
    static_assert(sizeof (sal_Int8) == sizeof (guchar), "size mismatch");
    std::memcpy(value->getArray(), p, n * sizeof (guchar));
        // assuming that n * sizeof (guchar) is small enough for std::size_t
    return true;
}

bool getHexbinary(
    OString const & key, GVariantHolder const & variant, css::uno::Any * value)
{
    assert(value != nullptr);
    css::uno::Sequence<sal_Int8> v;
    if (!getHexbinaryValue(key, variant, &v)) {
        return false;
    }
    *value <<= v;
    return true;
}

bool getBooleanList(
    OString const & key, GVariantHolder const & variant, css::uno::Any * value)
{
    assert(value != nullptr);
    if (std::strcmp(g_variant_get_type_string(variant.get()), "ab") != 0) {
        SAL_WARN(
            "configmgr.dconf",
            "bad key " << key << " does not match boolean list property");
        return false;
    }
    gsize n;
    gconstpointer p = g_variant_get_fixed_array(
        variant.get(), &n, sizeof (guchar));
    if (n > static_cast<typename std::make_unsigned<sal_Int32>::type>(
            std::numeric_limits<sal_Int32>::max()))
    {
        SAL_WARN("configmgr.dconf", "too long boolean list for key " << key);
        return false;
    }
    css::uno::Sequence<sal_Bool> v(static_cast<sal_Int32>(n));
    static_assert(sizeof (sal_Bool) == sizeof (guchar), "size mismatch");
    std::memcpy(v.getArray(), p, n * sizeof (guchar));
        // assuming that n * sizeof (guchar) is small enough for std::size_t
    *value <<= v;
    return true;
}

bool getShortList(
    OString const & key, GVariantHolder const & variant, css::uno::Any * value)
{
    assert(value != nullptr);
    if (std::strcmp(g_variant_get_type_string(variant.get()), "an") != 0) {
        SAL_WARN(
            "configmgr.dconf",
            "bad key " << key << " does not match short list property");
        return false;
    }
    gsize n;
    gconstpointer p = g_variant_get_fixed_array(
        variant.get(), &n, sizeof (gint16));
    if (n > static_cast<typename std::make_unsigned<sal_Int32>::type>(
            std::numeric_limits<sal_Int32>::max()))
    {
        SAL_WARN("configmgr.dconf", "too long short list for key " << key);
        return false;
    }
    css::uno::Sequence<sal_Int16> v(static_cast<sal_Int32>(n));
    static_assert(sizeof (sal_Int16) == sizeof (gint16), "size mismatch");
    std::memcpy(v.getArray(), p, n * sizeof (gint16));
        // assuming that n * sizeof (gint16) is small enough for std::size_t
    *value <<= v;
    return true;
}

bool getIntList(
    OString const & key, GVariantHolder const & variant, css::uno::Any * value)
{
    assert(value != nullptr);
    if (std::strcmp(g_variant_get_type_string(variant.get()), "ai") != 0) {
        SAL_WARN(
            "configmgr.dconf",
            "bad key " << key << " does not match int list property");
        return false;
    }
    gsize n;
    gconstpointer p = g_variant_get_fixed_array(
        variant.get(), &n, sizeof (gint32));
    if (n > static_cast<typename std::make_unsigned<sal_Int32>::type>(
            std::numeric_limits<sal_Int32>::max()))
    {
        SAL_WARN("configmgr.dconf", "too long int list for key " << key);
        return false;
    }
    css::uno::Sequence<sal_Int32> v(static_cast<sal_Int32>(n));
    static_assert(sizeof (sal_Int32) == sizeof (gint32), "size mismatch");
    std::memcpy(v.getArray(), p, n * sizeof (gint32));
        // assuming that n * sizeof (gint32) is small enough for std::size_t
    *value <<= v;
    return true;
}

bool getLongList(
    OString const & key, GVariantHolder const & variant, css::uno::Any * value)
{
    assert(value != nullptr);
    if (std::strcmp(g_variant_get_type_string(variant.get()), "ax") != 0) {
        SAL_WARN(
            "configmgr.dconf",
            "bad key " << key << " does not match long list property");
        return false;
    }
    gsize n;
    gconstpointer p = g_variant_get_fixed_array(
        variant.get(), &n, sizeof (gint64));
    if (n > static_cast<typename std::make_unsigned<sal_Int32>::type>(
            std::numeric_limits<sal_Int32>::max()))
    {
        SAL_WARN("configmgr.dconf", "too long long list for key " << key);
        return false;
    }
    css::uno::Sequence<sal_Int64> v(static_cast<sal_Int32>(n));
    static_assert(sizeof (sal_Int64) == sizeof (gint64), "size mismatch");
    std::memcpy(v.getArray(), p, n * sizeof (gint64));
        // assuming that n * sizeof (gint64) is small enough for std::size_t
    *value <<= v;
    return true;
}

bool getDoubleList(
    OString const & key, GVariantHolder const & variant, css::uno::Any * value)
{
    assert(value != nullptr);
    if (std::strcmp(g_variant_get_type_string(variant.get()), "ad") != 0) {
        SAL_WARN(
            "configmgr.dconf",
            "bad key " << key << " does not match double list property");
        return false;
    }
    gsize n;
    gconstpointer p = g_variant_get_fixed_array(
        variant.get(), &n, sizeof (gdouble));
    if (n > static_cast<typename std::make_unsigned<sal_Int32>::type>(
            std::numeric_limits<sal_Int32>::max()))
    {
        SAL_WARN("configmgr.dconf", "too long double list for key " << key);
        return false;
    }
    css::uno::Sequence<double> v(static_cast<sal_Int32>(n));
    static_assert(std::is_same<double, gdouble>::value, "type mismatch");
    std::memcpy(v.getArray(), p, n * sizeof (gdouble));
        // assuming that n * sizeof (gdouble) is small enough for std::size_t
    *value <<= v;
    return true;
}

bool getStringList(
    OString const & key, GVariantHolder const & variant, css::uno::Any * value)
{
    assert(value != nullptr);
    if (std::strcmp(g_variant_get_type_string(variant.get()), "as") != 0) {
        SAL_WARN(
            "configmgr.dconf",
            "bad key " << key << " does not match string list property");
        return false;
    }
    gsize n = g_variant_n_children(variant.get());
    if (n > static_cast<typename std::make_unsigned<sal_Int32>::type>(
            std::numeric_limits<sal_Int32>::max()))
    {
        SAL_WARN("configmgr.dconf", "too long string list for key " << key);
        return false;
    }
    css::uno::Sequence<OUString> v(static_cast<sal_Int32>(n));
    for (gsize i = 0; i != n; ++i) {
        GVariantHolder c(g_variant_get_child_value(variant.get(), i));
        if (!getStringValue(key, c, v.getArray() + i)) {
            return false;
        }
    }
    *value <<= v;
    return true;
}

bool getHexbinaryList(
    OString const & key, GVariantHolder const & variant, css::uno::Any * value)
{
    assert(value != nullptr);
    if (std::strcmp(g_variant_get_type_string(variant.get()), "aay") != 0) {
        SAL_WARN(
            "configmgr.dconf",
            "bad key " << key << " does not match hexbinary list property");
        return false;
    }
    gsize n = g_variant_n_children(variant.get());
    if (n > static_cast<typename std::make_unsigned<sal_Int32>::type>(
            std::numeric_limits<sal_Int32>::max()))
    {
        SAL_WARN("configmgr.dconf", "too long hexbinary list for key " << key);
        return false;
    }
    css::uno::Sequence<css::uno::Sequence<sal_Int8>> v(
        static_cast<sal_Int32>(n));
    for (gsize i = 0; i != n; ++i) {
        GVariantHolder c(g_variant_get_child_value(variant.get(), i));
        if (!getHexbinaryValue(key, c, v.getArray() + i)) {
            return false;
        }
    }
    *value <<= v;
    return true;
}

bool getAny(
    OString const & key, GVariantHolder const & variant, css::uno::Any * value)
{
    char const * t = g_variant_get_type_string(variant.get());
    if (std::strcmp(t, "b") == 0) {
        return getBoolean(key, variant, value);
    }
    if (std::strcmp(t, "n") == 0) {
        return getShort(key, variant, value);
    }
    if (std::strcmp(t, "i") == 0) {
        return getInt(key, variant, value);
    }
    if (std::strcmp(t, "x") == 0) {
        return getLong(key, variant, value);
    }
    if (std::strcmp(t, "d") == 0) {
        return getDouble(key, variant, value);
    }
    if (std::strcmp(t, "s") == 0) {
        return getString(key, variant, value);
    }
    if (std::strcmp(t, "ay") == 0) {
        return getHexbinary(key, variant, value);
    }
    if (std::strcmp(t, "ab") == 0) {
        return getBooleanList(key, variant, value);
    }
    if (std::strcmp(t, "an") == 0) {
        return getShortList(key, variant, value);
    }
    if (std::strcmp(t, "ai") == 0) {
        return getIntList(key, variant, value);
    }
    if (std::strcmp(t, "ax") == 0) {
        return getLongList(key, variant, value);
    }
    if (std::strcmp(t, "ad") == 0) {
        return getDoubleList(key, variant, value);
    }
    if (std::strcmp(t, "as") == 0) {
        return getStringList(key, variant, value);
    }
    if (std::strcmp(t, "aay") == 0) {
        return getHexbinaryList(key, variant, value);
    }
    SAL_WARN(
        "configmgr.dconf", "bad key " << key << " does not match any property");
    return false;
}

enum class ReadValue { Error, Value, Remove };

ReadValue readValue(
    GObjectHolder<DConfClient> const & client, OString const & path, Type type,
    bool nillable, bool removable, css::uno::Any * value)
{
    assert(value != nullptr);
    assert(!value->hasValue());
    assert(!path.endsWith("/"));
    GVariantHolder v(dconf_client_read(client.get(), path.getStr()));
    if (v.get() == nullptr) {
        SAL_WARN("configmgr.dconf", "cannot read key " << path);
        return ReadValue::Error;
    }
    if (removable && std::strcmp(g_variant_get_type_string(v.get()), "()") == 0)
    {
        return ReadValue::Remove;
    }
    bool nil;
    if (nillable) {
        if (g_variant_classify(v.get()) != G_VARIANT_CLASS_MAYBE) {
            SAL_WARN(
                "configmgr.dconf",
                "bad key " << path << " does not match nillable property");
        }
        v.reset(g_variant_get_maybe(v.get()));
        nil = v.get() == nullptr;
    } else {
        nil = false;
    }
    if (!nil) {
        switch (type) {
        case TYPE_ANY:
            if (!getAny(path, v, value)) {
                return ReadValue::Error;
            }
            break;
        case TYPE_BOOLEAN:
            if (!getBoolean(path, v, value)) {
                return ReadValue::Error;
            }
            break;
        case TYPE_SHORT:
            if (!getShort(path, v, value)) {
                return ReadValue::Error;
            }
            break;
        case TYPE_INT:
            if (!getInt(path, v, value)) {
                return ReadValue::Error;
            }
            break;
        case TYPE_LONG:
            if (!getLong(path, v, value)) {
                return ReadValue::Error;
            }
            break;
        case TYPE_DOUBLE:
            if (!getDouble(path, v, value)) {
                return ReadValue::Error;
            }
            break;
        case TYPE_STRING:
            if (!getString(path, v, value)) {
                return ReadValue::Error;
            }
            break;
        case TYPE_HEXBINARY:
            if (!getHexbinary(path, v, value)) {
                return ReadValue::Error;
            }
            break;
        case TYPE_BOOLEAN_LIST:
            if (!getBooleanList(path, v, value)) {
                return ReadValue::Error;
            }
            break;
        case TYPE_SHORT_LIST:
            if (!getShortList(path, v, value)) {
                return ReadValue::Error;
            }
            break;
        case TYPE_INT_LIST:
            if (!getIntList(path, v, value)) {
                return ReadValue::Error;
            }
            break;
        case TYPE_LONG_LIST:
            if (!getLongList(path, v, value)) {
                return ReadValue::Error;
            }
            break;
        case TYPE_DOUBLE_LIST:
            if (!getDoubleList(path, v, value)) {
                return ReadValue::Error;
            }
            break;
        case TYPE_STRING_LIST:
            if (!getStringList(path, v, value)) {
                return ReadValue::Error;
            }
            break;
        case TYPE_HEXBINARY_LIST:
            if (!getHexbinaryList(path, v, value)) {
                return ReadValue::Error;
            }
            break;
        default:
            assert(false); // cannot happen
        }
    }
    return ReadValue::Value;
}

void readDir(
    Data & data, int layer, rtl::Reference<Node> const & node,
    NodeMap & members, GObjectHolder<DConfClient> const & client,
    OString const & dir)
{
    StringArrayHolder a(dconf_client_list(client.get(), dir.getStr(), nullptr));
    for (char const * const * p = a.get(); *p != nullptr; ++p) {
        std::size_t n = std::strlen(*p);
        if (n > static_cast<typename std::make_unsigned<sal_Int32>::type>(
                std::numeric_limits<sal_Int32>::max()))
        {
            SAL_WARN("configmgr.dconf", "too long dir/key in dir " << dir);
            continue;
        }
        OString s(*p, static_cast<sal_Int32>(n));
        OString path(dir + s);
        OUString seg;
        if (!rtl_convertStringToUString(
                &seg.pData, s.getStr(), s.getLength(), RTL_TEXTENCODING_UTF8,
                (RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_ERROR
                 | RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_ERROR
                 | RTL_TEXTTOUNICODE_FLAGS_INVALID_ERROR)))
        {
            SAL_WARN("configmgr.dconf", "non--UTF-8 dir/key in dir " << dir);
            continue;
        }
        bool isDir = seg.endsWith("/", &seg);
        bool remove;
        OUString name;
        OUString templ;
        bool replace;
        if (node.is() && node->kind() == Node::KIND_SET) {
            if (isDir) {
                remove = false;
                sal_Int32 i1 = seg.indexOf(';');
                if (i1 == -1) {
                    SAL_WARN(
                        "configmgr.dconf", "bad set element syntax " << path);
                    continue;
                }
                name = seg.copy(0, i1);
                if (!decode(&name, false, false, true)) {
                    continue;
                }
                ++i1;
                sal_Int32 i2 = seg.indexOf(';', i1);
                if (i2 == -1) {
                    SAL_WARN(
                        "configmgr.dconf", "bad set element syntax " << path);
                    continue;
                }
                templ = seg.copy(i1, i2 - i1);
                if (!decode(&templ, false, true, true)) {
                    continue;
                }
                ++i2;
                if (rtl_ustr_asciil_reverseCompare_WithLength(
                        seg.getStr() + i2, seg.getLength() - i2, "fuse",
                        std::strlen("fuse"))
                    == 0)
                {
                    replace = false;
                } else if (rtl_ustr_asciil_reverseCompare_WithLength(
                               seg.getStr() + i2, seg.getLength() - i2,
                               "replace", std::strlen("replace"))
                           == 0)
                {
                    replace = true;
                } else {
                    SAL_WARN(
                        "configmgr.dconf", "bad set element syntax " << path);
                    continue;
                }
                rtl::Reference<SetNode> set(static_cast<SetNode *>(node.get()));
                if (!set->isValidTemplate(templ)) {
                    SAL_WARN(
                        "configmgr.dconf",
                        "bad " << path
                            << " denotes unsupported set element template");
                    continue;
                }
            } else {
                remove = true;
                name = seg;
                replace = false;
                assert(!path.endsWith("/"));
                GVariantHolder v(
                    dconf_client_read(client.get(), path.getStr()));
                if (v.get() == nullptr) {
                    SAL_WARN("configmgr.dconf", "cannot read key " << path);
                    continue;
                }
                if (std::strcmp(g_variant_get_type_string(v.get()), "()") != 0)
                {
                    SAL_WARN(
                        "configmgr.dconf",
                        "bad " << path
                            << " does not denote set element removal");
                    continue;
                }
            }
        } else {
            remove = false;
            name = seg;
            replace = false;
        }
        rtl::Reference<Node> member(members.findNode(layer, name));
        bool insert = !member.is();
        if (!remove && (replace || insert)) {
            if (!node.is()) {
                SAL_WARN("configmgr.dconf", "bad unmatched " << path);
                continue;
            }
            switch (node->kind()) {
            case Node::KIND_LOCALIZED_PROPERTY:
                member.set(new LocalizedValueNode(layer));
                break;
            case Node::KIND_GROUP:
                if (!static_cast<GroupNode *>(node.get())->isExtensible()) {
                    SAL_WARN("configmgr.dconf", "bad unmatched " << path);
                    continue;
                }
                member.set(
                    new PropertyNode(
                        layer, TYPE_ANY, true, css::uno::Any(), true));
                break;
            case Node::KIND_SET:
                assert(!templ.isEmpty());
                member = data.getTemplate(layer, templ);
                if (!member.is()) {
                    SAL_WARN(
                        "configmgr.dconf",
                        "bad " << path << " denoting undefined template "
                            << templ);
                    continue;
                }
                break;
            default:
                assert(false); // cannot happen
            }
        } else if (!(templ.isEmpty()
                     || (node.is() && templ == node->getTemplateName())))
        {
            SAL_WARN(
                "configmgr.dconf",
                "bad " << path
                    << " denoting set element of non-matching template "
                    << node->getTemplateName());
            continue;
        }
        if (member->getFinalized() < layer) {
            continue;
        }
        switch (member->kind()) {
        case Node::KIND_PROPERTY:
            {
                if (isDir) {
                    SAL_WARN(
                        "configmgr.dconf",
                        "bad dir " << path << " does not match property");
                    continue;
                }
                rtl::Reference<PropertyNode> prop(
                    static_cast<PropertyNode *>(member.get()));
                css::uno::Any value;
                switch (readValue(
                            client, path, prop->getStaticType(),
                            prop->isNillable(), prop->isExtension(), &value))
                {
                case ReadValue::Error:
                    continue;
                case ReadValue::Value:
                    prop->setValue(layer, value);
                    break;
                case ReadValue::Remove:
                    remove = true;
                    break;
                }
                break;
            }
        case Node::KIND_LOCALIZED_VALUE:
            {
                if (isDir) {
                    SAL_WARN(
                        "configmgr.dconf",
                        "bad dir " << path
                            << " does not match localized value");
                    continue;
                }
                assert(
                    node.is() && node->kind() == Node::KIND_LOCALIZED_PROPERTY);
                rtl::Reference<LocalizedPropertyNode> locProp(
                    static_cast<LocalizedPropertyNode *>(node.get()));
                css::uno::Any value;
                if (readValue(
                        client, path, locProp->getStaticType(),
                        locProp->isNillable(), false, &value)
                    == ReadValue::Error)
                {
                    continue;
                }
                static_cast<LocalizedValueNode *>(member.get())->setValue(
                    layer, value);
                break;
            }
        case Node::KIND_LOCALIZED_PROPERTY:
        case Node::KIND_GROUP:
        case Node::KIND_SET:
            if (!isDir) {
                SAL_WARN(
                    "configmgr.dconf",
                    "bad key " << path
                        << " does not match localized property, group, or set,"
                        " respectively");
                continue;
            }
            assert(path.endsWith("/"));
            readDir(data, layer, member, member->getMembers(), client, path);
            break;
        default:
            assert(false); // cannot happen
        }
        if (remove) {
            if (!member->getMandatory()) {
                members.erase(name);
            }
        } else if (replace) {
            members.erase(name);
            members.insert(NodeMap::value_type(name, member));
        } else if (insert) {
            members.insert(NodeMap::value_type(name, member));
        }
    }
}

}

void readDconfLayer(Data & data, int layer) {
    GObjectHolder<DConfClient> client(dconf_client_new());
    readDir(
        data, layer, rtl::Reference<Node>(), data.getComponents(), client,
        "/org/libreoffice/registry/");
}

}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */