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Commit | Line | Data |
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10bea152 JS |
1 | /* |
2 | * GIT - The information manager from hell | |
3 | * | |
4 | * Copyright (C) Linus Torvalds, 2005 | |
5 | * Copyright (C) Johannes Schindelin, 2005 | |
6 | * | |
7 | */ | |
17712991 | 8 | #include "cache.h" |
7f0e39fa | 9 | #include "exec_cmd.h" |
17712991 LT |
10 | |
11 | #define MAXNAME (256) | |
12 | ||
13 | static FILE *config_file; | |
0dccc7dc | 14 | static const char *config_file_name; |
17712991 | 15 | static int config_linenr; |
02e5ba4a | 16 | static int config_file_eof; |
960ccca6 DH |
17 | static int zlib_compression_seen; |
18 | ||
17712991 LT |
19 | static int get_next_char(void) |
20 | { | |
21 | int c; | |
22 | FILE *f; | |
23 | ||
24 | c = '\n'; | |
25 | if ((f = config_file) != NULL) { | |
26 | c = fgetc(f); | |
db2c075d JH |
27 | if (c == '\r') { |
28 | /* DOS like systems */ | |
29 | c = fgetc(f); | |
30 | if (c != '\n') { | |
31 | ungetc(c, f); | |
32 | c = '\r'; | |
33 | } | |
34 | } | |
17712991 LT |
35 | if (c == '\n') |
36 | config_linenr++; | |
37 | if (c == EOF) { | |
02e5ba4a | 38 | config_file_eof = 1; |
17712991 LT |
39 | c = '\n'; |
40 | } | |
41 | } | |
42 | return c; | |
43 | } | |
44 | ||
45 | static char *parse_value(void) | |
46 | { | |
47 | static char value[1024]; | |
48 | int quote = 0, comment = 0, len = 0, space = 0; | |
49 | ||
50 | for (;;) { | |
51 | int c = get_next_char(); | |
52 | if (len >= sizeof(value)) | |
53 | return NULL; | |
54 | if (c == '\n') { | |
55 | if (quote) | |
56 | return NULL; | |
57 | value[len] = 0; | |
58 | return value; | |
59 | } | |
60 | if (comment) | |
61 | continue; | |
62 | if (isspace(c) && !quote) { | |
63 | space = 1; | |
64 | continue; | |
65 | } | |
7ebdba61 JS |
66 | if (!quote) { |
67 | if (c == ';' || c == '#') { | |
68 | comment = 1; | |
69 | continue; | |
70 | } | |
71 | } | |
17712991 LT |
72 | if (space) { |
73 | if (len) | |
74 | value[len++] = ' '; | |
75 | space = 0; | |
76 | } | |
77 | if (c == '\\') { | |
78 | c = get_next_char(); | |
79 | switch (c) { | |
80 | case '\n': | |
81 | continue; | |
82 | case 't': | |
83 | c = '\t'; | |
84 | break; | |
85 | case 'b': | |
86 | c = '\b'; | |
87 | break; | |
88 | case 'n': | |
89 | c = '\n'; | |
90 | break; | |
5cbb401d LT |
91 | /* Some characters escape as themselves */ |
92 | case '\\': case '"': | |
93 | break; | |
94 | /* Reject unknown escape sequences */ | |
95 | default: | |
96 | return NULL; | |
17712991 LT |
97 | } |
98 | value[len++] = c; | |
99 | continue; | |
100 | } | |
101 | if (c == '"') { | |
102 | quote = 1-quote; | |
103 | continue; | |
104 | } | |
17712991 LT |
105 | value[len++] = c; |
106 | } | |
107 | } | |
108 | ||
38c5afa8 LT |
109 | static inline int iskeychar(int c) |
110 | { | |
111 | return isalnum(c) || c == '-'; | |
112 | } | |
113 | ||
17712991 LT |
114 | static int get_value(config_fn_t fn, char *name, unsigned int len) |
115 | { | |
116 | int c; | |
117 | char *value; | |
118 | ||
119 | /* Get the full name */ | |
120 | for (;;) { | |
121 | c = get_next_char(); | |
02e5ba4a | 122 | if (config_file_eof) |
17712991 | 123 | break; |
38c5afa8 | 124 | if (!iskeychar(c)) |
17712991 LT |
125 | break; |
126 | name[len++] = tolower(c); | |
127 | if (len >= MAXNAME) | |
128 | return -1; | |
129 | } | |
130 | name[len] = 0; | |
131 | while (c == ' ' || c == '\t') | |
132 | c = get_next_char(); | |
133 | ||
134 | value = NULL; | |
135 | if (c != '\n') { | |
136 | if (c != '=') | |
137 | return -1; | |
138 | value = parse_value(); | |
139 | if (!value) | |
140 | return -1; | |
141 | } | |
142 | return fn(name, value); | |
143 | } | |
144 | ||
d14f7764 LT |
145 | static int get_extended_base_var(char *name, int baselen, int c) |
146 | { | |
147 | do { | |
148 | if (c == '\n') | |
149 | return -1; | |
150 | c = get_next_char(); | |
151 | } while (isspace(c)); | |
152 | ||
153 | /* We require the format to be '[base "extension"]' */ | |
154 | if (c != '"') | |
155 | return -1; | |
156 | name[baselen++] = '.'; | |
157 | ||
158 | for (;;) { | |
159 | int c = get_next_char(); | |
160 | if (c == '\n') | |
161 | return -1; | |
162 | if (c == '"') | |
163 | break; | |
164 | if (c == '\\') { | |
165 | c = get_next_char(); | |
166 | if (c == '\n') | |
167 | return -1; | |
168 | } | |
169 | name[baselen++] = c; | |
170 | if (baselen > MAXNAME / 2) | |
171 | return -1; | |
172 | } | |
173 | ||
174 | /* Final ']' */ | |
175 | if (get_next_char() != ']') | |
176 | return -1; | |
177 | return baselen; | |
178 | } | |
179 | ||
17712991 LT |
180 | static int get_base_var(char *name) |
181 | { | |
182 | int baselen = 0; | |
183 | ||
184 | for (;;) { | |
185 | int c = get_next_char(); | |
02e5ba4a | 186 | if (config_file_eof) |
17712991 LT |
187 | return -1; |
188 | if (c == ']') | |
189 | return baselen; | |
d14f7764 LT |
190 | if (isspace(c)) |
191 | return get_extended_base_var(name, baselen, c); | |
38c5afa8 | 192 | if (!iskeychar(c) && c != '.') |
17712991 LT |
193 | return -1; |
194 | if (baselen > MAXNAME / 2) | |
195 | return -1; | |
196 | name[baselen++] = tolower(c); | |
197 | } | |
198 | } | |
199 | ||
200 | static int git_parse_file(config_fn_t fn) | |
201 | { | |
202 | int comment = 0; | |
203 | int baselen = 0; | |
204 | static char var[MAXNAME]; | |
205 | ||
206 | for (;;) { | |
207 | int c = get_next_char(); | |
208 | if (c == '\n') { | |
02e5ba4a | 209 | if (config_file_eof) |
17712991 LT |
210 | return 0; |
211 | comment = 0; | |
212 | continue; | |
213 | } | |
214 | if (comment || isspace(c)) | |
215 | continue; | |
216 | if (c == '#' || c == ';') { | |
217 | comment = 1; | |
218 | continue; | |
219 | } | |
220 | if (c == '[') { | |
221 | baselen = get_base_var(var); | |
222 | if (baselen <= 0) | |
223 | break; | |
224 | var[baselen++] = '.'; | |
225 | var[baselen] = 0; | |
226 | continue; | |
227 | } | |
228 | if (!isalpha(c)) | |
229 | break; | |
128af9d1 | 230 | var[baselen] = tolower(c); |
17712991 LT |
231 | if (get_value(fn, var, baselen+1) < 0) |
232 | break; | |
233 | } | |
4f629539 | 234 | die("bad config file line %d in %s", config_linenr, config_file_name); |
17712991 LT |
235 | } |
236 | ||
c8deb5a1 | 237 | static int parse_unit_factor(const char *end, unsigned long *val) |
0b87b6e0 BD |
238 | { |
239 | if (!*end) | |
240 | return 1; | |
c8deb5a1 SP |
241 | else if (!strcasecmp(end, "k")) { |
242 | *val *= 1024; | |
243 | return 1; | |
244 | } | |
245 | else if (!strcasecmp(end, "m")) { | |
246 | *val *= 1024 * 1024; | |
247 | return 1; | |
248 | } | |
249 | else if (!strcasecmp(end, "g")) { | |
250 | *val *= 1024 * 1024 * 1024; | |
251 | return 1; | |
252 | } | |
253 | return 0; | |
0b87b6e0 BD |
254 | } |
255 | ||
256 | int git_parse_long(const char *value, long *ret) | |
257 | { | |
258 | if (value && *value) { | |
259 | char *end; | |
260 | long val = strtol(value, &end, 0); | |
c8deb5a1 SP |
261 | unsigned long factor = 1; |
262 | if (!parse_unit_factor(end, &factor)) | |
263 | return 0; | |
264 | *ret = val * factor; | |
0b87b6e0 BD |
265 | return 1; |
266 | } | |
267 | return 0; | |
268 | } | |
269 | ||
270 | int git_parse_ulong(const char *value, unsigned long *ret) | |
17712991 LT |
271 | { |
272 | if (value && *value) { | |
273 | char *end; | |
0b87b6e0 | 274 | unsigned long val = strtoul(value, &end, 0); |
c8deb5a1 SP |
275 | if (!parse_unit_factor(end, &val)) |
276 | return 0; | |
277 | *ret = val; | |
0b87b6e0 | 278 | return 1; |
17712991 | 279 | } |
0b87b6e0 BD |
280 | return 0; |
281 | } | |
282 | ||
283 | int git_config_int(const char *name, const char *value) | |
284 | { | |
285 | long ret; | |
286 | if (!git_parse_long(value, &ret)) | |
287 | die("bad config value for '%s' in %s", name, config_file_name); | |
288 | return ret; | |
289 | } | |
290 | ||
291 | unsigned long git_config_ulong(const char *name, const char *value) | |
292 | { | |
293 | unsigned long ret; | |
294 | if (!git_parse_ulong(value, &ret)) | |
295 | die("bad config value for '%s' in %s", name, config_file_name); | |
296 | return ret; | |
17712991 LT |
297 | } |
298 | ||
299 | int git_config_bool(const char *name, const char *value) | |
300 | { | |
301 | if (!value) | |
302 | return 1; | |
303 | if (!*value) | |
304 | return 0; | |
624314fd | 305 | if (!strcasecmp(value, "true") || !strcasecmp(value, "yes")) |
17712991 | 306 | return 1; |
624314fd | 307 | if (!strcasecmp(value, "false") || !strcasecmp(value, "no")) |
17712991 LT |
308 | return 0; |
309 | return git_config_int(name, value) != 0; | |
310 | } | |
311 | ||
ea5105a5 CC |
312 | int git_config_string(const char **dest, const char *var, const char *value) |
313 | { | |
314 | if (!value) | |
315 | return config_error_nonbool(var); | |
316 | *dest = xstrdup(value); | |
317 | return 0; | |
318 | } | |
319 | ||
17712991 LT |
320 | int git_default_config(const char *var, const char *value) |
321 | { | |
322 | /* This needs a better name */ | |
323 | if (!strcmp(var, "core.filemode")) { | |
324 | trust_executable_bit = git_config_bool(var, value); | |
325 | return 0; | |
326 | } | |
327 | ||
9378c161 JH |
328 | if (!strcmp(var, "core.quotepath")) { |
329 | quote_path_fully = git_config_bool(var, value); | |
330 | return 0; | |
331 | } | |
332 | ||
78a8d641 JS |
333 | if (!strcmp(var, "core.symlinks")) { |
334 | has_symlinks = git_config_bool(var, value); | |
335 | return 0; | |
336 | } | |
337 | ||
7d1864ce JH |
338 | if (!strcmp(var, "core.bare")) { |
339 | is_bare_repository_cfg = git_config_bool(var, value); | |
340 | return 0; | |
341 | } | |
342 | ||
5f73076c JH |
343 | if (!strcmp(var, "core.ignorestat")) { |
344 | assume_unchanged = git_config_bool(var, value); | |
345 | return 0; | |
346 | } | |
347 | ||
e388c738 JH |
348 | if (!strcmp(var, "core.prefersymlinkrefs")) { |
349 | prefer_symlink_refs = git_config_bool(var, value); | |
f8348be3 JS |
350 | return 0; |
351 | } | |
352 | ||
6de08ae6 SP |
353 | if (!strcmp(var, "core.logallrefupdates")) { |
354 | log_all_ref_updates = git_config_bool(var, value); | |
355 | return 0; | |
356 | } | |
357 | ||
2f8acdb3 JH |
358 | if (!strcmp(var, "core.warnambiguousrefs")) { |
359 | warn_ambiguous_refs = git_config_bool(var, value); | |
360 | return 0; | |
361 | } | |
362 | ||
960ccca6 | 363 | if (!strcmp(var, "core.loosecompression")) { |
12f6c308 JBH |
364 | int level = git_config_int(var, value); |
365 | if (level == -1) | |
366 | level = Z_DEFAULT_COMPRESSION; | |
367 | else if (level < 0 || level > Z_BEST_COMPRESSION) | |
368 | die("bad zlib compression level %d", level); | |
369 | zlib_compression_level = level; | |
960ccca6 DH |
370 | zlib_compression_seen = 1; |
371 | return 0; | |
372 | } | |
373 | ||
374 | if (!strcmp(var, "core.compression")) { | |
375 | int level = git_config_int(var, value); | |
376 | if (level == -1) | |
377 | level = Z_DEFAULT_COMPRESSION; | |
378 | else if (level < 0 || level > Z_BEST_COMPRESSION) | |
379 | die("bad zlib compression level %d", level); | |
380 | core_compression_level = level; | |
381 | core_compression_seen = 1; | |
382 | if (!zlib_compression_seen) | |
383 | zlib_compression_level = level; | |
12f6c308 JBH |
384 | return 0; |
385 | } | |
386 | ||
60bb8b14 | 387 | if (!strcmp(var, "core.packedgitwindowsize")) { |
5faaf246 | 388 | int pgsz_x2 = getpagesize() * 2; |
60bb8b14 | 389 | packed_git_window_size = git_config_int(var, value); |
5faaf246 JH |
390 | |
391 | /* This value must be multiple of (pagesize * 2) */ | |
392 | packed_git_window_size /= pgsz_x2; | |
393 | if (packed_git_window_size < 1) | |
394 | packed_git_window_size = 1; | |
395 | packed_git_window_size *= pgsz_x2; | |
60bb8b14 SP |
396 | return 0; |
397 | } | |
398 | ||
77ccc5bb SP |
399 | if (!strcmp(var, "core.packedgitlimit")) { |
400 | packed_git_limit = git_config_int(var, value); | |
401 | return 0; | |
402 | } | |
403 | ||
18bdec11 SP |
404 | if (!strcmp(var, "core.deltabasecachelimit")) { |
405 | delta_base_cache_limit = git_config_int(var, value); | |
406 | return 0; | |
407 | } | |
408 | ||
6c510bee | 409 | if (!strcmp(var, "core.autocrlf")) { |
d7f46334 LT |
410 | if (value && !strcasecmp(value, "input")) { |
411 | auto_crlf = -1; | |
412 | return 0; | |
413 | } | |
6c510bee LT |
414 | auto_crlf = git_config_bool(var, value); |
415 | return 0; | |
416 | } | |
417 | ||
e1b10391 | 418 | if (!strcmp(var, "user.name")) { |
6c47d0e8 JH |
419 | if (!value) |
420 | return config_error_nonbool(var); | |
817151e6 | 421 | strlcpy(git_default_name, value, sizeof(git_default_name)); |
e1b10391 LT |
422 | return 0; |
423 | } | |
424 | ||
425 | if (!strcmp(var, "user.email")) { | |
6c47d0e8 JH |
426 | if (!value) |
427 | return config_error_nonbool(var); | |
817151e6 | 428 | strlcpy(git_default_email, value, sizeof(git_default_email)); |
e1b10391 LT |
429 | return 0; |
430 | } | |
431 | ||
ea5105a5 CC |
432 | if (!strcmp(var, "i18n.commitencoding")) |
433 | return git_config_string(&git_commit_encoding, var, value); | |
d2c11a38 | 434 | |
ea5105a5 CC |
435 | if (!strcmp(var, "i18n.logoutputencoding")) |
436 | return git_config_string(&git_log_output_encoding, var, value); | |
d2c11a38 | 437 | |
a159ca0c | 438 | if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) { |
aa086eb8 ML |
439 | pager_use_color = git_config_bool(var,value); |
440 | return 0; | |
441 | } | |
442 | ||
872da32d CC |
443 | if (!strcmp(var, "core.pager")) |
444 | return git_config_string(&pager_program, var, value); | |
54adf370 | 445 | |
ee9601e6 CC |
446 | if (!strcmp(var, "core.editor")) |
447 | return git_config_string(&editor_program, var, value); | |
4d87b9c5 | 448 | |
dfb068be CC |
449 | if (!strcmp(var, "core.excludesfile")) |
450 | return git_config_string(&excludes_file, var, value); | |
039bc64e | 451 | |
a9cc857a | 452 | if (!strcmp(var, "core.whitespace")) { |
6c47d0e8 JH |
453 | if (!value) |
454 | return config_error_nonbool(var); | |
cf1b7869 | 455 | whitespace_rule_cfg = parse_whitespace_rule(value); |
a9cc857a JH |
456 | return 0; |
457 | } | |
458 | ||
1ab661dd | 459 | /* Add other config variables here and to Documentation/config.txt. */ |
17712991 LT |
460 | return 0; |
461 | } | |
462 | ||
4f629539 | 463 | int git_config_from_file(config_fn_t fn, const char *filename) |
17712991 LT |
464 | { |
465 | int ret; | |
4f629539 | 466 | FILE *f = fopen(filename, "r"); |
17712991 LT |
467 | |
468 | ret = -1; | |
469 | if (f) { | |
470 | config_file = f; | |
4f629539 | 471 | config_file_name = filename; |
17712991 | 472 | config_linenr = 1; |
02e5ba4a | 473 | config_file_eof = 0; |
17712991 LT |
474 | ret = git_parse_file(fn); |
475 | fclose(f); | |
4f629539 | 476 | config_file_name = NULL; |
17712991 LT |
477 | } |
478 | return ret; | |
479 | } | |
10bea152 | 480 | |
506b17b1 JS |
481 | const char *git_etc_gitconfig(void) |
482 | { | |
7f0e39fa JS |
483 | static const char *system_wide; |
484 | if (!system_wide) { | |
485 | system_wide = ETC_GITCONFIG; | |
486 | if (!is_absolute_path(system_wide)) { | |
487 | /* interpret path relative to exec-dir */ | |
488 | const char *exec_path = git_exec_path(); | |
489 | system_wide = prefix_path(exec_path, strlen(exec_path), | |
490 | system_wide); | |
491 | } | |
492 | } | |
493 | return system_wide; | |
506b17b1 JS |
494 | } |
495 | ||
4f629539 JH |
496 | int git_config(config_fn_t fn) |
497 | { | |
5f1a63e0 JS |
498 | int ret = 0; |
499 | char *repo_config = NULL; | |
500 | const char *home = NULL, *filename; | |
501 | ||
502 | /* $GIT_CONFIG makes git read _only_ the given config file, | |
503 | * $GIT_CONFIG_LOCAL will make it process it in addition to the | |
504 | * global config file, the same way it would the per-repository | |
505 | * config file otherwise. */ | |
d4ebc36c | 506 | filename = getenv(CONFIG_ENVIRONMENT); |
5f1a63e0 | 507 | if (!filename) { |
506b17b1 JS |
508 | if (!access(git_etc_gitconfig(), R_OK)) |
509 | ret += git_config_from_file(fn, git_etc_gitconfig()); | |
5f1a63e0 | 510 | home = getenv("HOME"); |
d4ebc36c | 511 | filename = getenv(CONFIG_LOCAL_ENVIRONMENT); |
5f1a63e0 | 512 | if (!filename) |
9befac47 | 513 | filename = repo_config = xstrdup(git_path("config")); |
7f29f7a9 | 514 | } |
5f1a63e0 JS |
515 | |
516 | if (home) { | |
9befac47 | 517 | char *user_config = xstrdup(mkpath("%s/.gitconfig", home)); |
e33d0611 | 518 | if (!access(user_config, R_OK)) |
5f1a63e0 JS |
519 | ret = git_config_from_file(fn, user_config); |
520 | free(user_config); | |
521 | } | |
522 | ||
523 | ret += git_config_from_file(fn, filename); | |
4cac42b1 | 524 | free(repo_config); |
5f1a63e0 | 525 | return ret; |
4f629539 JH |
526 | } |
527 | ||
10bea152 JS |
528 | /* |
529 | * Find all the stuff for git_config_set() below. | |
530 | */ | |
4ddba79d JS |
531 | |
532 | #define MAX_MATCHES 512 | |
533 | ||
10bea152 JS |
534 | static struct { |
535 | int baselen; | |
536 | char* key; | |
f98d863d | 537 | int do_not_match; |
10bea152 | 538 | regex_t* value_regex; |
4ddba79d | 539 | int multi_replace; |
dc49cd76 | 540 | size_t offset[MAX_MATCHES]; |
10bea152 JS |
541 | enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state; |
542 | int seen; | |
543 | } store; | |
544 | ||
f98d863d JS |
545 | static int matches(const char* key, const char* value) |
546 | { | |
547 | return !strcmp(key, store.key) && | |
548 | (store.value_regex == NULL || | |
549 | (store.do_not_match ^ | |
550 | !regexec(store.value_regex, value, 0, NULL, 0))); | |
551 | } | |
552 | ||
10bea152 JS |
553 | static int store_aux(const char* key, const char* value) |
554 | { | |
ae9ee41d JH |
555 | const char *ep; |
556 | size_t section_len; | |
557 | ||
10bea152 JS |
558 | switch (store.state) { |
559 | case KEY_SEEN: | |
f98d863d | 560 | if (matches(key, value)) { |
4ddba79d | 561 | if (store.seen == 1 && store.multi_replace == 0) { |
10bea152 JS |
562 | fprintf(stderr, |
563 | "Warning: %s has multiple values\n", | |
564 | key); | |
4ddba79d JS |
565 | } else if (store.seen >= MAX_MATCHES) { |
566 | fprintf(stderr, "Too many matches\n"); | |
567 | return 1; | |
10bea152 | 568 | } |
4ddba79d JS |
569 | |
570 | store.offset[store.seen] = ftell(config_file); | |
10bea152 JS |
571 | store.seen++; |
572 | } | |
573 | break; | |
574 | case SECTION_SEEN: | |
ae9ee41d JH |
575 | /* |
576 | * What we are looking for is in store.key (both | |
577 | * section and var), and its section part is baselen | |
578 | * long. We found key (again, both section and var). | |
579 | * We would want to know if this key is in the same | |
580 | * section as what we are looking for. We already | |
581 | * know we are in the same section as what should | |
582 | * hold store.key. | |
583 | */ | |
584 | ep = strrchr(key, '.'); | |
585 | section_len = ep - key; | |
586 | ||
587 | if ((section_len != store.baselen) || | |
588 | memcmp(key, store.key, section_len+1)) { | |
10bea152 JS |
589 | store.state = SECTION_END_SEEN; |
590 | break; | |
ae9ee41d JH |
591 | } |
592 | ||
593 | /* | |
594 | * Do not increment matches: this is no match, but we | |
595 | * just made sure we are in the desired section. | |
596 | */ | |
597 | store.offset[store.seen] = ftell(config_file); | |
10bea152 JS |
598 | /* fallthru */ |
599 | case SECTION_END_SEEN: | |
600 | case START: | |
f98d863d | 601 | if (matches(key, value)) { |
4ddba79d | 602 | store.offset[store.seen] = ftell(config_file); |
10bea152 JS |
603 | store.state = KEY_SEEN; |
604 | store.seen++; | |
d14f7764 LT |
605 | } else { |
606 | if (strrchr(key, '.') - key == store.baselen && | |
bdf0ef08 | 607 | !strncmp(key, store.key, store.baselen)) { |
93ddef3e | 608 | store.state = SECTION_SEEN; |
bdf0ef08 | 609 | store.offset[store.seen] = ftell(config_file); |
d14f7764 | 610 | } |
bdf0ef08 | 611 | } |
10bea152 JS |
612 | } |
613 | return 0; | |
614 | } | |
615 | ||
b79d18c9 | 616 | static int write_error(void) |
480c9e52 AW |
617 | { |
618 | fprintf(stderr, "Failed to write new configuration file\n"); | |
619 | ||
620 | /* Same error code as "failed to rename". */ | |
621 | return 4; | |
622 | } | |
623 | ||
624 | static int store_write_section(int fd, const char* key) | |
10bea152 | 625 | { |
cb891a59 KH |
626 | const char *dot; |
627 | int i, success; | |
628 | struct strbuf sb; | |
d14f7764 | 629 | |
cb891a59 KH |
630 | strbuf_init(&sb, 0); |
631 | dot = memchr(key, '.', store.baselen); | |
d14f7764 | 632 | if (dot) { |
cb891a59 KH |
633 | strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key); |
634 | for (i = dot - key + 1; i < store.baselen; i++) { | |
635 | if (key[i] == '"') | |
636 | strbuf_addch(&sb, '\\'); | |
637 | strbuf_addch(&sb, key[i]); | |
d14f7764 | 638 | } |
cb891a59 KH |
639 | strbuf_addstr(&sb, "\"]\n"); |
640 | } else { | |
641 | strbuf_addf(&sb, "[%.*s]\n", store.baselen, key); | |
d14f7764 LT |
642 | } |
643 | ||
cb891a59 KH |
644 | success = write_in_full(fd, sb.buf, sb.len) == sb.len; |
645 | strbuf_release(&sb); | |
480c9e52 | 646 | |
cb891a59 | 647 | return success; |
10bea152 JS |
648 | } |
649 | ||
480c9e52 | 650 | static int store_write_pair(int fd, const char* key, const char* value) |
10bea152 | 651 | { |
cb891a59 KH |
652 | int i, success; |
653 | int length = strlen(key + store.baselen + 1); | |
654 | const char *quote = ""; | |
655 | struct strbuf sb; | |
cdd4fb15 | 656 | |
6281f394 JM |
657 | /* |
658 | * Check to see if the value needs to be surrounded with a dq pair. | |
659 | * Note that problematic characters are always backslash-quoted; this | |
660 | * check is about not losing leading or trailing SP and strings that | |
661 | * follow beginning-of-comment characters (i.e. ';' and '#') by the | |
662 | * configuration parser. | |
663 | */ | |
cdd4fb15 | 664 | if (value[0] == ' ') |
cb891a59 | 665 | quote = "\""; |
cdd4fb15 BG |
666 | for (i = 0; value[i]; i++) |
667 | if (value[i] == ';' || value[i] == '#') | |
cb891a59 KH |
668 | quote = "\""; |
669 | if (i && value[i - 1] == ' ') | |
670 | quote = "\""; | |
671 | ||
672 | strbuf_init(&sb, 0); | |
673 | strbuf_addf(&sb, "\t%.*s = %s", | |
674 | length, key + store.baselen + 1, quote); | |
10bea152 | 675 | |
10bea152 JS |
676 | for (i = 0; value[i]; i++) |
677 | switch (value[i]) { | |
480c9e52 | 678 | case '\n': |
cb891a59 | 679 | strbuf_addstr(&sb, "\\n"); |
480c9e52 AW |
680 | break; |
681 | case '\t': | |
cb891a59 | 682 | strbuf_addstr(&sb, "\\t"); |
480c9e52 AW |
683 | break; |
684 | case '"': | |
685 | case '\\': | |
cb891a59 | 686 | strbuf_addch(&sb, '\\'); |
480c9e52 | 687 | default: |
cb891a59 | 688 | strbuf_addch(&sb, value[i]); |
480c9e52 AW |
689 | break; |
690 | } | |
cb891a59 KH |
691 | strbuf_addf(&sb, "%s\n", quote); |
692 | ||
693 | success = write_in_full(fd, sb.buf, sb.len) == sb.len; | |
694 | strbuf_release(&sb); | |
695 | ||
696 | return success; | |
10bea152 JS |
697 | } |
698 | ||
dc49cd76 SP |
699 | static ssize_t find_beginning_of_line(const char* contents, size_t size, |
700 | size_t offset_, int* found_bracket) | |
4ddba79d | 701 | { |
dc49cd76 SP |
702 | size_t equal_offset = size, bracket_offset = size; |
703 | ssize_t offset; | |
4ddba79d | 704 | |
7a31cc0f | 705 | contline: |
a6080a0a | 706 | for (offset = offset_-2; offset > 0 |
4ddba79d JS |
707 | && contents[offset] != '\n'; offset--) |
708 | switch (contents[offset]) { | |
709 | case '=': equal_offset = offset; break; | |
710 | case ']': bracket_offset = offset; break; | |
711 | } | |
7a31cc0f FL |
712 | if (offset > 0 && contents[offset-1] == '\\') { |
713 | offset_ = offset; | |
714 | goto contline; | |
715 | } | |
4ddba79d JS |
716 | if (bracket_offset < equal_offset) { |
717 | *found_bracket = 1; | |
718 | offset = bracket_offset+1; | |
719 | } else | |
720 | offset++; | |
721 | ||
722 | return offset; | |
723 | } | |
724 | ||
10bea152 JS |
725 | int git_config_set(const char* key, const char* value) |
726 | { | |
4ddba79d | 727 | return git_config_set_multivar(key, value, NULL, 0); |
10bea152 JS |
728 | } |
729 | ||
730 | /* | |
731 | * If value==NULL, unset in (remove from) config, | |
732 | * if value_regex!=NULL, disregard key/value pairs where value does not match. | |
4ddba79d JS |
733 | * if multi_replace==0, nothing, or only one matching key/value is replaced, |
734 | * else all matching key/values (regardless how many) are removed, | |
735 | * before the new pair is written. | |
10bea152 JS |
736 | * |
737 | * Returns 0 on success. | |
738 | * | |
739 | * This function does this: | |
740 | * | |
741 | * - it locks the config file by creating ".git/config.lock" | |
742 | * | |
743 | * - it then parses the config using store_aux() as validator to find | |
744 | * the position on the key/value pair to replace. If it is to be unset, | |
745 | * it must be found exactly once. | |
746 | * | |
747 | * - the config file is mmap()ed and the part before the match (if any) is | |
748 | * written to the lock file, then the changed part and the rest. | |
749 | * | |
750 | * - the config file is removed and the lock file rename()d to it. | |
751 | * | |
752 | */ | |
753 | int git_config_set_multivar(const char* key, const char* value, | |
4ddba79d | 754 | const char* value_regex, int multi_replace) |
10bea152 | 755 | { |
d14f7764 | 756 | int i, dot; |
f8ba655e | 757 | int fd = -1, in_fd; |
dafc88b1 | 758 | int ret; |
9c3796fc | 759 | char* config_filename; |
6cbf973c | 760 | struct lock_file *lock = NULL; |
b17e659d | 761 | const char* last_dot = strrchr(key, '.'); |
4ddba79d | 762 | |
d4ebc36c | 763 | config_filename = getenv(CONFIG_ENVIRONMENT); |
9c3796fc | 764 | if (!config_filename) { |
d4ebc36c | 765 | config_filename = getenv(CONFIG_LOCAL_ENVIRONMENT); |
9c3796fc JS |
766 | if (!config_filename) |
767 | config_filename = git_path("config"); | |
768 | } | |
9befac47 | 769 | config_filename = xstrdup(config_filename); |
9c3796fc | 770 | |
10bea152 JS |
771 | /* |
772 | * Since "key" actually contains the section name and the real | |
773 | * key name separated by a dot, we have to know where the dot is. | |
774 | */ | |
b17e659d | 775 | |
dafc88b1 | 776 | if (last_dot == NULL) { |
10bea152 | 777 | fprintf(stderr, "key does not contain a section: %s\n", key); |
dafc88b1 SH |
778 | ret = 2; |
779 | goto out_free; | |
10bea152 | 780 | } |
b17e659d JS |
781 | store.baselen = last_dot - key; |
782 | ||
783 | store.multi_replace = multi_replace; | |
10bea152 JS |
784 | |
785 | /* | |
786 | * Validate the key and while at it, lower case it for matching. | |
787 | */ | |
2d7320d0 | 788 | store.key = xmalloc(strlen(key) + 1); |
d14f7764 LT |
789 | dot = 0; |
790 | for (i = 0; key[i]; i++) { | |
791 | unsigned char c = key[i]; | |
792 | if (c == '.') | |
793 | dot = 1; | |
794 | /* Leave the extended basename untouched.. */ | |
795 | if (!dot || i > store.baselen) { | |
38c5afa8 | 796 | if (!iskeychar(c) || (i == store.baselen+1 && !isalpha(c))) { |
d14f7764 LT |
797 | fprintf(stderr, "invalid key: %s\n", key); |
798 | free(store.key); | |
799 | ret = 1; | |
800 | goto out_free; | |
801 | } | |
802 | c = tolower(c); | |
6f71686e JS |
803 | } else if (c == '\n') { |
804 | fprintf(stderr, "invalid key (newline): %s\n", key); | |
805 | free(store.key); | |
806 | ret = 1; | |
807 | goto out_free; | |
d14f7764 LT |
808 | } |
809 | store.key[i] = c; | |
810 | } | |
3dd94e3b | 811 | store.key[i] = 0; |
10bea152 JS |
812 | |
813 | /* | |
6cbf973c | 814 | * The lock serves a purpose in addition to locking: the new |
10bea152 JS |
815 | * contents of .git/config will be written into it. |
816 | */ | |
6cbf973c BS |
817 | lock = xcalloc(sizeof(struct lock_file), 1); |
818 | fd = hold_lock_file_for_update(lock, config_filename, 0); | |
819 | if (fd < 0) { | |
10bea152 JS |
820 | fprintf(stderr, "could not lock config file\n"); |
821 | free(store.key); | |
dafc88b1 SH |
822 | ret = -1; |
823 | goto out_free; | |
10bea152 JS |
824 | } |
825 | ||
826 | /* | |
827 | * If .git/config does not exist yet, write a minimal version. | |
828 | */ | |
88fb958b AR |
829 | in_fd = open(config_filename, O_RDONLY); |
830 | if ( in_fd < 0 ) { | |
10bea152 JS |
831 | free(store.key); |
832 | ||
88fb958b AR |
833 | if ( ENOENT != errno ) { |
834 | error("opening %s: %s", config_filename, | |
835 | strerror(errno)); | |
dafc88b1 SH |
836 | ret = 3; /* same as "invalid config file" */ |
837 | goto out_free; | |
88fb958b | 838 | } |
10bea152 JS |
839 | /* if nothing to unset, error out */ |
840 | if (value == NULL) { | |
dafc88b1 SH |
841 | ret = 5; |
842 | goto out_free; | |
10bea152 JS |
843 | } |
844 | ||
845 | store.key = (char*)key; | |
480c9e52 | 846 | if (!store_write_section(fd, key) || |
93c1e079 JH |
847 | !store_write_pair(fd, key, value)) |
848 | goto write_err_out; | |
849 | } else { | |
88fb958b | 850 | struct stat st; |
10bea152 | 851 | char* contents; |
dc49cd76 SP |
852 | size_t contents_sz, copy_begin, copy_end; |
853 | int i, new_line = 0; | |
10bea152 JS |
854 | |
855 | if (value_regex == NULL) | |
856 | store.value_regex = NULL; | |
857 | else { | |
f98d863d JS |
858 | if (value_regex[0] == '!') { |
859 | store.do_not_match = 1; | |
860 | value_regex++; | |
861 | } else | |
862 | store.do_not_match = 0; | |
863 | ||
2d7320d0 | 864 | store.value_regex = (regex_t*)xmalloc(sizeof(regex_t)); |
10bea152 JS |
865 | if (regcomp(store.value_regex, value_regex, |
866 | REG_EXTENDED)) { | |
7246ed43 | 867 | fprintf(stderr, "Invalid pattern: %s\n", |
10bea152 JS |
868 | value_regex); |
869 | free(store.value_regex); | |
dafc88b1 SH |
870 | ret = 6; |
871 | goto out_free; | |
10bea152 JS |
872 | } |
873 | } | |
874 | ||
4ddba79d | 875 | store.offset[0] = 0; |
10bea152 JS |
876 | store.state = START; |
877 | store.seen = 0; | |
878 | ||
879 | /* | |
880 | * After this, store.offset will contain the *end* offset | |
881 | * of the last match, or remain at 0 if no match was found. | |
882 | * As a side effect, we make sure to transform only a valid | |
883 | * existing config file. | |
884 | */ | |
9c3796fc | 885 | if (git_config_from_file(store_aux, config_filename)) { |
10bea152 JS |
886 | fprintf(stderr, "invalid config file\n"); |
887 | free(store.key); | |
888 | if (store.value_regex != NULL) { | |
889 | regfree(store.value_regex); | |
890 | free(store.value_regex); | |
891 | } | |
dafc88b1 SH |
892 | ret = 3; |
893 | goto out_free; | |
10bea152 JS |
894 | } |
895 | ||
896 | free(store.key); | |
897 | if (store.value_regex != NULL) { | |
898 | regfree(store.value_regex); | |
899 | free(store.value_regex); | |
900 | } | |
901 | ||
4ddba79d JS |
902 | /* if nothing to unset, or too many matches, error out */ |
903 | if ((store.seen == 0 && value == NULL) || | |
904 | (store.seen > 1 && multi_replace == 0)) { | |
dafc88b1 SH |
905 | ret = 5; |
906 | goto out_free; | |
10bea152 JS |
907 | } |
908 | ||
88fb958b | 909 | fstat(in_fd, &st); |
dc49cd76 SP |
910 | contents_sz = xsize_t(st.st_size); |
911 | contents = xmmap(NULL, contents_sz, PROT_READ, | |
10bea152 JS |
912 | MAP_PRIVATE, in_fd, 0); |
913 | close(in_fd); | |
914 | ||
4ddba79d JS |
915 | if (store.seen == 0) |
916 | store.seen = 1; | |
917 | ||
918 | for (i = 0, copy_begin = 0; i < store.seen; i++) { | |
919 | if (store.offset[i] == 0) { | |
dc49cd76 | 920 | store.offset[i] = copy_end = contents_sz; |
4ddba79d JS |
921 | } else if (store.state != KEY_SEEN) { |
922 | copy_end = store.offset[i]; | |
10bea152 | 923 | } else |
4ddba79d | 924 | copy_end = find_beginning_of_line( |
dc49cd76 | 925 | contents, contents_sz, |
4ddba79d JS |
926 | store.offset[i]-2, &new_line); |
927 | ||
02e5ba4a JK |
928 | if (copy_end > 0 && contents[copy_end-1] != '\n') |
929 | new_line = 1; | |
930 | ||
4ddba79d JS |
931 | /* write the first part of the config */ |
932 | if (copy_end > copy_begin) { | |
93c1e079 JH |
933 | if (write_in_full(fd, contents + copy_begin, |
934 | copy_end - copy_begin) < | |
935 | copy_end - copy_begin) | |
936 | goto write_err_out; | |
937 | if (new_line && | |
938 | write_in_full(fd, "\n", 1) != 1) | |
939 | goto write_err_out; | |
4ddba79d JS |
940 | } |
941 | copy_begin = store.offset[i]; | |
10bea152 JS |
942 | } |
943 | ||
10bea152 JS |
944 | /* write the pair (value == NULL means unset) */ |
945 | if (value != NULL) { | |
93c1e079 JH |
946 | if (store.state == START) { |
947 | if (!store_write_section(fd, key)) | |
948 | goto write_err_out; | |
480c9e52 | 949 | } |
93c1e079 JH |
950 | if (!store_write_pair(fd, key, value)) |
951 | goto write_err_out; | |
10bea152 JS |
952 | } |
953 | ||
954 | /* write the rest of the config */ | |
dc49cd76 | 955 | if (copy_begin < contents_sz) |
93c1e079 | 956 | if (write_in_full(fd, contents + copy_begin, |
dc49cd76 SP |
957 | contents_sz - copy_begin) < |
958 | contents_sz - copy_begin) | |
93c1e079 | 959 | goto write_err_out; |
10bea152 | 960 | |
dc49cd76 | 961 | munmap(contents, contents_sz); |
10bea152 JS |
962 | } |
963 | ||
4ed7cd3a | 964 | if (commit_lock_file(lock) < 0) { |
6cbf973c | 965 | fprintf(stderr, "Cannot commit config file!\n"); |
dafc88b1 SH |
966 | ret = 4; |
967 | goto out_free; | |
10bea152 JS |
968 | } |
969 | ||
6cbf973c BS |
970 | /* |
971 | * lock is committed, so don't try to roll it back below. | |
972 | * NOTE: Since lockfile.c keeps a linked list of all created | |
973 | * lock_file structures, it isn't safe to free(lock). It's | |
974 | * better to just leave it hanging around. | |
975 | */ | |
976 | lock = NULL; | |
dafc88b1 SH |
977 | ret = 0; |
978 | ||
979 | out_free: | |
6cbf973c BS |
980 | if (lock) |
981 | rollback_lock_file(lock); | |
4cac42b1 | 982 | free(config_filename); |
dafc88b1 | 983 | return ret; |
93c1e079 JH |
984 | |
985 | write_err_out: | |
986 | ret = write_error(); | |
987 | goto out_free; | |
988 | ||
10bea152 JS |
989 | } |
990 | ||
118f8b24 PB |
991 | static int section_name_match (const char *buf, const char *name) |
992 | { | |
993 | int i = 0, j = 0, dot = 0; | |
994 | for (; buf[i] && buf[i] != ']'; i++) { | |
995 | if (!dot && isspace(buf[i])) { | |
996 | dot = 1; | |
997 | if (name[j++] != '.') | |
998 | break; | |
999 | for (i++; isspace(buf[i]); i++) | |
1000 | ; /* do nothing */ | |
1001 | if (buf[i] != '"') | |
1002 | break; | |
1003 | continue; | |
1004 | } | |
1005 | if (buf[i] == '\\' && dot) | |
1006 | i++; | |
1007 | else if (buf[i] == '"' && dot) { | |
1008 | for (i++; isspace(buf[i]); i++) | |
1009 | ; /* do_nothing */ | |
1010 | break; | |
1011 | } | |
1012 | if (buf[i] != name[j++]) | |
1013 | break; | |
1014 | } | |
1015 | return (buf[i] == ']' && name[j] == 0); | |
1016 | } | |
1017 | ||
1018 | /* if new_name == NULL, the section is removed instead */ | |
0667fcfb JS |
1019 | int git_config_rename_section(const char *old_name, const char *new_name) |
1020 | { | |
118f8b24 | 1021 | int ret = 0, remove = 0; |
fc1905bb | 1022 | char *config_filename; |
0667fcfb JS |
1023 | struct lock_file *lock = xcalloc(sizeof(struct lock_file), 1); |
1024 | int out_fd; | |
1025 | char buf[1024]; | |
1026 | ||
d4ebc36c | 1027 | config_filename = getenv(CONFIG_ENVIRONMENT); |
0667fcfb | 1028 | if (!config_filename) { |
d4ebc36c | 1029 | config_filename = getenv(CONFIG_LOCAL_ENVIRONMENT); |
0667fcfb JS |
1030 | if (!config_filename) |
1031 | config_filename = git_path("config"); | |
1032 | } | |
1033 | config_filename = xstrdup(config_filename); | |
1034 | out_fd = hold_lock_file_for_update(lock, config_filename, 0); | |
fc1905bb JH |
1035 | if (out_fd < 0) { |
1036 | ret = error("Could not lock config file!"); | |
1037 | goto out; | |
1038 | } | |
0667fcfb | 1039 | |
fc1905bb | 1040 | if (!(config_file = fopen(config_filename, "rb"))) { |
01ebb9dc GB |
1041 | /* no config file means nothing to rename, no error */ |
1042 | goto unlock_and_out; | |
fc1905bb | 1043 | } |
0667fcfb JS |
1044 | |
1045 | while (fgets(buf, sizeof(buf), config_file)) { | |
1046 | int i; | |
480c9e52 | 1047 | int length; |
0667fcfb JS |
1048 | for (i = 0; buf[i] && isspace(buf[i]); i++) |
1049 | ; /* do nothing */ | |
1050 | if (buf[i] == '[') { | |
1051 | /* it's a section */ | |
118f8b24 PB |
1052 | if (section_name_match (&buf[i+1], old_name)) { |
1053 | ret++; | |
1054 | if (new_name == NULL) { | |
1055 | remove = 1; | |
0667fcfb JS |
1056 | continue; |
1057 | } | |
0667fcfb | 1058 | store.baselen = strlen(new_name); |
480c9e52 AW |
1059 | if (!store_write_section(out_fd, new_name)) { |
1060 | ret = write_error(); | |
1061 | goto out; | |
1062 | } | |
0667fcfb JS |
1063 | continue; |
1064 | } | |
118f8b24 | 1065 | remove = 0; |
0667fcfb | 1066 | } |
118f8b24 PB |
1067 | if (remove) |
1068 | continue; | |
480c9e52 AW |
1069 | length = strlen(buf); |
1070 | if (write_in_full(out_fd, buf, length) != length) { | |
1071 | ret = write_error(); | |
1072 | goto out; | |
1073 | } | |
0667fcfb | 1074 | } |
fc1905bb | 1075 | fclose(config_file); |
01ebb9dc | 1076 | unlock_and_out: |
4ed7cd3a | 1077 | if (commit_lock_file(lock) < 0) |
480c9e52 | 1078 | ret = error("Cannot commit config file!"); |
fc1905bb JH |
1079 | out: |
1080 | free(config_filename); | |
0667fcfb JS |
1081 | return ret; |
1082 | } | |
40ea4ed9 JH |
1083 | |
1084 | /* | |
1085 | * Call this to report error for your variable that should not | |
1086 | * get a boolean value (i.e. "[my] var" means "true"). | |
1087 | */ | |
1088 | int config_error_nonbool(const char *var) | |
1089 | { | |
1090 | return error("Missing value for '%s'", var); | |
1091 | } |