{{ message }}
Repository navigation
Expand file tree
/
Copy pathconfig.c
More file actions
892 lines (695 loc) · 18 KB
/
Copy pathconfig.c
File metadata and controls
892 lines (695 loc) · 18 KB
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
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "common.h"
#include "fileops.h"
#include "config.h"
#include "git2/config.h"
#include "git2/sys/config.h"
#include "vector.h"
#include "buf_text.h"
#include "config_file.h"
#if GIT_WIN32
# include <windows.h>
#endif
#include <ctype.h>
typedef struct {
git_refcount rc;
git_config_backend *file;
git_config_level_t level;
} file_internal;
static void file_internal_free(file_internal *internal)
{
git_config_backend *file;
file = internal->file;
file->free(file);
git__free(internal);
}
static void config_free(git_config *cfg)
{
size_t i;
file_internal *internal;
for (i = 0; i < cfg->files.length; ++i) {
internal = git_vector_get(&cfg->files, i);
GIT_REFCOUNT_DEC(internal, file_internal_free);
}
git_vector_free(&cfg->files);
git__memzero(cfg, sizeof(*cfg));
git__free(cfg);
}
void git_config_free(git_config *cfg)
{
if (cfg == NULL)
return;
GIT_REFCOUNT_DEC(cfg, config_free);
}
static int config_backend_cmp(const void *a, const void *b)
{
const file_internal *bk_a = (const file_internal *)(a);
const file_internal *bk_b = (const file_internal *)(b);
return bk_b->level - bk_a->level;
}
int git_config_new(git_config **out)
{
git_config *cfg;
cfg = git__malloc(sizeof(git_config));
GITERR_CHECK_ALLOC(cfg);
memset(cfg, 0x0, sizeof(git_config));
if (git_vector_init(&cfg->files, 3, config_backend_cmp) < 0) {
git__free(cfg);
return -1;
}
*out = cfg;
GIT_REFCOUNT_INC(cfg);
return 0;
}
int git_config_add_file_ondisk(
git_config *cfg,
const char *path,
git_config_level_t level,
int force)
{
git_config_backend *file = NULL;
struct stat st;
int res;
assert(cfg && path);
res = p_stat(path, &st);
if (res < 0 && errno != ENOENT) {
giterr_set(GITERR_CONFIG, "Error stat'ing config file '%s'", path);
return -1;
}
if (git_config_file__ondisk(&file, path) < 0)
return -1;
if ((res = git_config_add_backend(cfg, file, level, force)) < 0) {
/*
* free manually; the file is not owned by the config
* instance yet and will not be freed on cleanup
*/
file->free(file);
return res;
}
return 0;
}
int git_config_open_ondisk(git_config **out, const char *path)
{
int error;
git_config *config;
*out = NULL;
if (git_config_new(&config) < 0)
return -1;
if ((error = git_config_add_file_ondisk(config, path, GIT_CONFIG_LEVEL_LOCAL, 0)) < 0)
git_config_free(config);
else
*out = config;
return error;
}
static int find_internal_file_by_level(
file_internal **internal_out,
const git_config *cfg,
git_config_level_t level)
{
int pos = -1;
file_internal *internal;
size_t i;
/* when passing GIT_CONFIG_HIGHEST_LEVEL, the idea is to get the config file
* which has the highest level. As config files are stored in a vector
* sorted by decreasing order of level, getting the file at position 0
* will do the job.
*/
if (level == GIT_CONFIG_HIGHEST_LEVEL) {
pos = 0;
} else {
git_vector_foreach(&cfg->files, i, internal) {
if (internal->level == level)
pos = (int)i;
}
}
if (pos == -1) {
giterr_set(GITERR_CONFIG,
"No config file exists for the given level '%i'", (int)level);
return GIT_ENOTFOUND;
}
*internal_out = git_vector_get(&cfg->files, pos);
return 0;
}
static int duplicate_level(void **old_raw, void *new_raw)
{
file_internal **old = (file_internal **)old_raw;
GIT_UNUSED(new_raw);
giterr_set(GITERR_CONFIG, "A file with the same level (%i) has already been added to the config", (int)(*old)->level);
return GIT_EEXISTS;
}
static void try_remove_existing_file_internal(
git_config *cfg,
git_config_level_t level)
{
int pos = -1;
file_internal *internal;
size_t i;
git_vector_foreach(&cfg->files, i, internal) {
if (internal->level == level)
pos = (int)i;
}
if (pos == -1)
return;
internal = git_vector_get(&cfg->files, pos);
if (git_vector_remove(&cfg->files, pos) < 0)
return;
GIT_REFCOUNT_DEC(internal, file_internal_free);
}
static int git_config__add_internal(
git_config *cfg,
file_internal *internal,
git_config_level_t level,
int force)
{
int result;
/* delete existing config file for level if it exists */
if (force)
try_remove_existing_file_internal(cfg, level);
if ((result = git_vector_insert_sorted(&cfg->files,
internal, &duplicate_level)) < 0)
return result;
git_vector_sort(&cfg->files);
internal->file->cfg = cfg;
GIT_REFCOUNT_INC(internal);
return 0;
}
int git_config_open_global(git_config **cfg_out, git_config *cfg)
{
if (!git_config_open_level(cfg_out, cfg, GIT_CONFIG_LEVEL_XDG))
return 0;
return git_config_open_level(cfg_out, cfg, GIT_CONFIG_LEVEL_GLOBAL);
}
int git_config_open_level(
git_config **cfg_out,
const git_config *cfg_parent,
git_config_level_t level)
{
git_config *cfg;
file_internal *internal;
int res;
if ((res = find_internal_file_by_level(&internal, cfg_parent, level)) < 0)
return res;
if ((res = git_config_new(&cfg)) < 0)
return res;
if ((res = git_config__add_internal(cfg, internal, level, true)) < 0) {
git_config_free(cfg);
return res;
}
*cfg_out = cfg;
return 0;
}
int git_config_add_backend(
git_config *cfg,
git_config_backend *file,
git_config_level_t level,
int force)
{
file_internal *internal;
int result;
assert(cfg && file);
GITERR_CHECK_VERSION(file, GIT_CONFIG_BACKEND_VERSION, "git_config_backend");
if ((result = file->open(file, level)) < 0)
return result;
internal = git__malloc(sizeof(file_internal));
GITERR_CHECK_ALLOC(internal);
memset(internal, 0x0, sizeof(file_internal));
internal->file = file;
internal->level = level;
if ((result = git_config__add_internal(cfg, internal, level, force)) < 0) {
git__free(internal);
return result;
}
return 0;
}
int git_config_refresh(git_config *cfg)
{
int error = 0;
size_t i;
for (i = 0; i < cfg->files.length && !error; ++i) {
file_internal *internal = git_vector_get(&cfg->files, i);
git_config_backend *file = internal->file;
error = file->refresh(file);
}
if (!error && GIT_REFCOUNT_OWNER(cfg) != NULL)
git_repository__cvar_cache_clear(GIT_REFCOUNT_OWNER(cfg));
return error;
}
/*
* Loop over all the variables
*/
int git_config_foreach(
const git_config *cfg, git_config_foreach_cb cb, void *payload)
{
return git_config_foreach_match(cfg, NULL, cb, payload);
}
int git_config_foreach_match(
const git_config *cfg,
const char *regexp,
git_config_foreach_cb cb,
void *payload)
{
int ret = 0;
size_t i;
file_internal *internal;
git_config_backend *file;
for (i = 0; i < cfg->files.length && ret == 0; ++i) {
internal = git_vector_get(&cfg->files, i);
file = internal->file;
ret = file->foreach(file, regexp, cb, payload);
}
return ret;
}
/**************
* Setters
**************/
static int config_error_nofiles(const char *name)
{
giterr_set(GITERR_CONFIG,
"Cannot set value for '%s' when no config files exist", name);
return GIT_ENOTFOUND;
}
int git_config_delete_entry(git_config *cfg, const char *name)
{
git_config_backend *file;
file_internal *internal;
internal = git_vector_get(&cfg->files, 0);
if (!internal || !internal->file)
return config_error_nofiles(name);
file = internal->file;
return file->del(file, name);
}
int git_config_set_int64(git_config *cfg, const char *name, int64_t value)
{
char str_value[32]; /* All numbers should fit in here */
p_snprintf(str_value, sizeof(str_value), "%" PRId64, value);
return git_config_set_string(cfg, name, str_value);
}
int git_config_set_int32(git_config *cfg, const char *name, int32_t value)
{
return git_config_set_int64(cfg, name, (int64_t)value);
}
int git_config_set_bool(git_config *cfg, const char *name, int value)
{
return git_config_set_string(cfg, name, value ? "true" : "false");
}
int git_config_set_string(git_config *cfg, const char *name, const char *value)
{
int error;
git_config_backend *file;
file_internal *internal;
if (!value) {
giterr_set(GITERR_CONFIG, "The value to set cannot be NULL");
return -1;
}
internal = git_vector_get(&cfg->files, 0);
if (!internal || !internal->file)
return config_error_nofiles(name);
file = internal->file;
error = file->set(file, name, value);
if (!error && GIT_REFCOUNT_OWNER(cfg) != NULL)
git_repository__cvar_cache_clear(GIT_REFCOUNT_OWNER(cfg));
return error;
}
/***********
* Getters
***********/
int git_config_get_mapped(
int *out,
const git_config *cfg,
const char *name,
const git_cvar_map *maps,
size_t map_n)
{
const char *value;
int ret;
if ((ret = git_config_get_string(&value, cfg, name)) < 0)
return ret;
return git_config_lookup_map_value(out, maps, map_n, value);
}
int git_config_get_int64(int64_t *out, const git_config *cfg, const char *name)
{
const char *value;
int ret;
if ((ret = git_config_get_string(&value, cfg, name)) < 0)
return ret;
return git_config_parse_int64(out, value);
}
int git_config_get_int32(int32_t *out, const git_config *cfg, const char *name)
{
const char *value;
int ret;
if ((ret = git_config_get_string(&value, cfg, name)) < 0)
return ret;
return git_config_parse_int32(out, value);
}
static int get_string_at_file(const char **out, const git_config_backend *file, const char *name)
{
const git_config_entry *entry;
int res;
res = file->get(file, name, &entry);
if (!res)
*out = entry->value;
return res;
}
static int config_error_notfound(const char *name)
{
giterr_set(GITERR_CONFIG, "Config value '%s' was not found", name);
return GIT_ENOTFOUND;
}
static int get_string(const char **out, const git_config *cfg, const char *name)
{
file_internal *internal;
unsigned int i;
int res;
git_vector_foreach(&cfg->files, i, internal) {
if (!internal || !internal->file)
continue;
res = get_string_at_file(out, internal->file, name);
if (res != GIT_ENOTFOUND)
return res;
}
return config_error_notfound(name);
}
int git_config_get_bool(int *out, const git_config *cfg, const char *name)
{
const char *value = NULL;
int ret;
if ((ret = get_string(&value, cfg, name)) < 0)
return ret;
return git_config_parse_bool(out, value);
}
int git_config_get_string(const char **out, const git_config *cfg, const char *name)
{
int ret;
const char *str = NULL;
if ((ret = get_string(&str, cfg, name)) < 0)
return ret;
*out = str == NULL ? "" : str;
return 0;
}
int git_config_get_entry(const git_config_entry **out, const git_config *cfg, const char *name)
{
file_internal *internal;
unsigned int i;
git_config_backend *file;
int ret;
*out = NULL;
git_vector_foreach(&cfg->files, i, internal) {
if (!internal || !internal->file)
continue;
file = internal->file;
ret = file->get(file, name, out);
if (ret != GIT_ENOTFOUND)
return ret;
}
return config_error_notfound(name);
}
int git_config_get_multivar(
const git_config *cfg, const char *name, const char *regexp,
git_config_foreach_cb cb, void *payload)
{
file_internal *internal;
git_config_backend *file;
int ret = GIT_ENOTFOUND;
size_t i;
/*
* This loop runs the "wrong" way 'round because we need to
* look at every value from the most general to most specific
*/
for (i = cfg->files.length; i > 0; --i) {
internal = git_vector_get(&cfg->files, i - 1);
if (!internal || !internal->file)
continue;
file = internal->file;
ret = file->get_multivar(file, name, regexp, cb, payload);
if (ret < 0 && ret != GIT_ENOTFOUND)
return ret;
}
return (ret == GIT_ENOTFOUND) ? config_error_notfound(name) : 0;
}
int git_config_set_multivar(git_config *cfg, const char *name, const char *regexp, const char *value)
{
git_config_backend *file;
file_internal *internal;
internal = git_vector_get(&cfg->files, 0);
if (!internal || !internal->file)
return config_error_nofiles(name);
file = internal->file;
return file->set_multivar(file, name, regexp, value);
}
static int git_config__find_file_to_path(
char *out, size_t outlen, int (*find)(git_buf *buf))
{
int error = 0;
git_buf path = GIT_BUF_INIT;
if ((error = find(&path)) < 0)
goto done;
if (path.size >= outlen) {
giterr_set(GITERR_NOMEMORY, "Buffer is too short for the path");
error = GIT_EBUFS;
goto done;
}
git_buf_copy_cstr(out, outlen, &path);
done:
git_buf_free(&path);
return error;
}
int git_config_find_global_r(git_buf *path)
{
return git_futils_find_global_file(path, GIT_CONFIG_FILENAME_GLOBAL);
}
int git_config_find_global(char *global_config_path, size_t length)
{
return git_config__find_file_to_path(
global_config_path, length, git_config_find_global_r);
}
int git_config_find_xdg_r(git_buf *path)
{
return git_futils_find_xdg_file(path, GIT_CONFIG_FILENAME_XDG);
}
int git_config_find_xdg(char *xdg_config_path, size_t length)
{
return git_config__find_file_to_path(
xdg_config_path, length, git_config_find_xdg_r);
}
int git_config_find_system_r(git_buf *path)
{
return git_futils_find_system_file(path, GIT_CONFIG_FILENAME_SYSTEM);
}
int git_config_find_system(char *system_config_path, size_t length)
{
return git_config__find_file_to_path(
system_config_path, length, git_config_find_system_r);
}
int git_config__global_location(git_buf *buf)
{
const git_buf *paths;
const char *sep, *start;
size_t len;
if (git_futils_dirs_get(&paths, GIT_FUTILS_DIR_GLOBAL) < 0)
return -1;
/* no paths, so give up */
if (git_buf_len(paths) == 0)
return -1;
start = git_buf_cstr(paths);
sep = strchr(start, GIT_PATH_LIST_SEPARATOR);
if (sep)
len = sep - start;
else
len = paths->size;
if (git_buf_set(buf, start, len) < 0)
return -1;
return git_buf_joinpath(buf, buf->ptr, GIT_CONFIG_FILENAME_GLOBAL);
}
int git_config_open_default(git_config **out)
{
int error;
git_config *cfg = NULL;
git_buf buf = GIT_BUF_INIT;
if ((error = git_config_new(&cfg)) < 0)
return error;
if (!git_config_find_global_r(&buf) || !git_config__global_location(&buf)) {
error = git_config_add_file_ondisk(cfg, buf.ptr,
GIT_CONFIG_LEVEL_GLOBAL, 0);
}
if (!error && !git_config_find_xdg_r(&buf))
error = git_config_add_file_ondisk(cfg, buf.ptr,
GIT_CONFIG_LEVEL_XDG, 0);
if (!error && !git_config_find_system_r(&buf))
error = git_config_add_file_ondisk(cfg, buf.ptr,
GIT_CONFIG_LEVEL_SYSTEM, 0);
git_buf_free(&buf);
if (error) {
git_config_free(cfg);
cfg = NULL;
}
*out = cfg;
return error;
}
/***********
* Parsers
***********/
int git_config_lookup_map_value(
int *out,
const git_cvar_map *maps,
size_t map_n,
const char *value)
{
size_t i;
if (!value)
goto fail_parse;
for (i = 0; i < map_n; ++i) {
const git_cvar_map *m = maps + i;
switch (m->cvar_type) {
case GIT_CVAR_FALSE:
case GIT_CVAR_TRUE: {
int bool_val;
if (git__parse_bool(&bool_val, value) == 0 &&
bool_val == (int)m->cvar_type) {
*out = m->map_value;
return 0;
}
break;
}
case GIT_CVAR_INT32:
if (git_config_parse_int32(out, value) == 0)
return 0;
break;
case GIT_CVAR_STRING:
if (strcasecmp(value, m->str_match) == 0) {
*out = m->map_value;
return 0;
}
break;
}
}
fail_parse:
giterr_set(GITERR_CONFIG, "Failed to map '%s'", value);
return -1;
}
int git_config_parse_bool(int *out, const char *value)
{
if (git__parse_bool(out, value) == 0)
return 0;
if (git_config_parse_int32(out, value) == 0) {
*out = !!(*out);
return 0;
}
giterr_set(GITERR_CONFIG, "Failed to parse '%s' as a boolean value", value);
return -1;
}
int git_config_parse_int64(int64_t *out, const char *value)
{
const char *num_end;
int64_t num;
if (git__strtol64(&num, value, &num_end, 0) < 0)
goto fail_parse;
switch (*num_end) {
case 'g':
case 'G':
num *= 1024;
/* fallthrough */
case 'm':
case 'M':
num *= 1024;
/* fallthrough */
case 'k':
case 'K':
num *= 1024;
/* check that that there are no more characters after the
* given modifier suffix */
if (num_end[1] != '\0')
return -1;
/* fallthrough */
case '\0':
*out = num;
return 0;
default:
goto fail_parse;
}
fail_parse:
giterr_set(GITERR_CONFIG, "Failed to parse '%s' as an integer", value);
return -1;
}
int git_config_parse_int32(int32_t *out, const char *value)
{
int64_t tmp;
int32_t truncate;
if (git_config_parse_int64(&tmp, value) < 0)
goto fail_parse;
truncate = tmp & 0xFFFFFFFF;
if (truncate != tmp)
goto fail_parse;
*out = truncate;
return 0;
fail_parse:
giterr_set(GITERR_CONFIG, "Failed to parse '%s' as a 32-bit integer", value);
return -1;
}
struct rename_data {
git_config *config;
git_buf *name;
size_t old_len;
int actual_error;
};
static int rename_config_entries_cb(
const git_config_entry *entry,
void *payload)
{
int error = 0;
struct rename_data *data = (struct rename_data *)payload;
size_t base_len = git_buf_len(data->name);
if (base_len > 0 &&
!(error = git_buf_puts(data->name, entry->name + data->old_len)))
{
error = git_config_set_string(
data->config, git_buf_cstr(data->name), entry->value);
git_buf_truncate(data->name, base_len);
}
if (!error)
error = git_config_delete_entry(data->config, entry->name);
data->actual_error = error; /* preserve actual error code */
return error;
}
int git_config_rename_section(
git_repository *repo,
const char *old_section_name,
const char *new_section_name)
{
git_config *config;
git_buf pattern = GIT_BUF_INIT, replace = GIT_BUF_INIT;
int error = 0;
struct rename_data data;
git_buf_text_puts_escape_regex(&pattern, old_section_name);
if ((error = git_buf_puts(&pattern, "\\..+")) < 0)
goto cleanup;
if ((error = git_repository_config__weakptr(&config, repo)) < 0)
goto cleanup;
data.config = config;
data.name = &replace;
data.old_len = strlen(old_section_name) + 1;
data.actual_error = 0;
if ((error = git_buf_join(&replace, '.', new_section_name, "")) < 0)
goto cleanup;
if (new_section_name != NULL &&
(error = git_config_file_normalize_section(
replace.ptr, strchr(replace.ptr, '.'))) < 0)
{
giterr_set(
GITERR_CONFIG, "Invalid config section '%s'", new_section_name);
goto cleanup;
}
error = git_config_foreach_match(
config, git_buf_cstr(&pattern), rename_config_entries_cb, &data);
if (error == GIT_EUSER)
error = data.actual_error;
cleanup:
git_buf_free(&pattern);
git_buf_free(&replace);
return error;
}
You can’t perform that action at this time.