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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 | ||
312 | int git_default_config(const char *var, const char *value) | |
313 | { | |
314 | /* This needs a better name */ | |
315 | if (!strcmp(var, "core.filemode")) { | |
316 | trust_executable_bit = git_config_bool(var, value); | |
317 | return 0; | |
318 | } | |
319 | ||
9378c161 JH |
320 | if (!strcmp(var, "core.quotepath")) { |
321 | quote_path_fully = git_config_bool(var, value); | |
322 | return 0; | |
323 | } | |
324 | ||
78a8d641 JS |
325 | if (!strcmp(var, "core.symlinks")) { |
326 | has_symlinks = git_config_bool(var, value); | |
327 | return 0; | |
328 | } | |
329 | ||
7d1864ce JH |
330 | if (!strcmp(var, "core.bare")) { |
331 | is_bare_repository_cfg = git_config_bool(var, value); | |
332 | return 0; | |
333 | } | |
334 | ||
5f73076c JH |
335 | if (!strcmp(var, "core.ignorestat")) { |
336 | assume_unchanged = git_config_bool(var, value); | |
337 | return 0; | |
338 | } | |
339 | ||
e388c738 JH |
340 | if (!strcmp(var, "core.prefersymlinkrefs")) { |
341 | prefer_symlink_refs = git_config_bool(var, value); | |
f8348be3 JS |
342 | return 0; |
343 | } | |
344 | ||
6de08ae6 SP |
345 | if (!strcmp(var, "core.logallrefupdates")) { |
346 | log_all_ref_updates = git_config_bool(var, value); | |
347 | return 0; | |
348 | } | |
349 | ||
2f8acdb3 JH |
350 | if (!strcmp(var, "core.warnambiguousrefs")) { |
351 | warn_ambiguous_refs = git_config_bool(var, value); | |
352 | return 0; | |
353 | } | |
354 | ||
960ccca6 | 355 | if (!strcmp(var, "core.loosecompression")) { |
12f6c308 JBH |
356 | int level = git_config_int(var, value); |
357 | if (level == -1) | |
358 | level = Z_DEFAULT_COMPRESSION; | |
359 | else if (level < 0 || level > Z_BEST_COMPRESSION) | |
360 | die("bad zlib compression level %d", level); | |
361 | zlib_compression_level = level; | |
960ccca6 DH |
362 | zlib_compression_seen = 1; |
363 | return 0; | |
364 | } | |
365 | ||
366 | if (!strcmp(var, "core.compression")) { | |
367 | int level = git_config_int(var, value); | |
368 | if (level == -1) | |
369 | level = Z_DEFAULT_COMPRESSION; | |
370 | else if (level < 0 || level > Z_BEST_COMPRESSION) | |
371 | die("bad zlib compression level %d", level); | |
372 | core_compression_level = level; | |
373 | core_compression_seen = 1; | |
374 | if (!zlib_compression_seen) | |
375 | zlib_compression_level = level; | |
12f6c308 JBH |
376 | return 0; |
377 | } | |
378 | ||
60bb8b14 | 379 | if (!strcmp(var, "core.packedgitwindowsize")) { |
5faaf246 | 380 | int pgsz_x2 = getpagesize() * 2; |
60bb8b14 | 381 | packed_git_window_size = git_config_int(var, value); |
5faaf246 JH |
382 | |
383 | /* This value must be multiple of (pagesize * 2) */ | |
384 | packed_git_window_size /= pgsz_x2; | |
385 | if (packed_git_window_size < 1) | |
386 | packed_git_window_size = 1; | |
387 | packed_git_window_size *= pgsz_x2; | |
60bb8b14 SP |
388 | return 0; |
389 | } | |
390 | ||
77ccc5bb SP |
391 | if (!strcmp(var, "core.packedgitlimit")) { |
392 | packed_git_limit = git_config_int(var, value); | |
393 | return 0; | |
394 | } | |
395 | ||
18bdec11 SP |
396 | if (!strcmp(var, "core.deltabasecachelimit")) { |
397 | delta_base_cache_limit = git_config_int(var, value); | |
398 | return 0; | |
399 | } | |
400 | ||
6c510bee | 401 | if (!strcmp(var, "core.autocrlf")) { |
d7f46334 LT |
402 | if (value && !strcasecmp(value, "input")) { |
403 | auto_crlf = -1; | |
404 | return 0; | |
405 | } | |
6c510bee LT |
406 | auto_crlf = git_config_bool(var, value); |
407 | return 0; | |
408 | } | |
409 | ||
e1b10391 | 410 | if (!strcmp(var, "user.name")) { |
817151e6 | 411 | strlcpy(git_default_name, value, sizeof(git_default_name)); |
e1b10391 LT |
412 | return 0; |
413 | } | |
414 | ||
415 | if (!strcmp(var, "user.email")) { | |
817151e6 | 416 | strlcpy(git_default_email, value, sizeof(git_default_email)); |
e1b10391 LT |
417 | return 0; |
418 | } | |
419 | ||
4e72dcec | 420 | if (!strcmp(var, "i18n.commitencoding")) { |
dbb2b41a | 421 | git_commit_encoding = xstrdup(value); |
4e72dcec JH |
422 | return 0; |
423 | } | |
424 | ||
d2c11a38 | 425 | if (!strcmp(var, "i18n.logoutputencoding")) { |
dbb2b41a | 426 | git_log_output_encoding = xstrdup(value); |
d2c11a38 JH |
427 | return 0; |
428 | } | |
429 | ||
430 | ||
a159ca0c | 431 | if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) { |
aa086eb8 ML |
432 | pager_use_color = git_config_bool(var,value); |
433 | return 0; | |
434 | } | |
435 | ||
54adf370 BG |
436 | if (!strcmp(var, "core.pager")) { |
437 | pager_program = xstrdup(value); | |
438 | return 0; | |
439 | } | |
440 | ||
4d87b9c5 JS |
441 | if (!strcmp(var, "core.editor")) { |
442 | editor_program = xstrdup(value); | |
443 | return 0; | |
444 | } | |
445 | ||
039bc64e JH |
446 | if (!strcmp(var, "core.excludesfile")) { |
447 | if (!value) | |
448 | die("core.excludesfile without value"); | |
449 | excludes_file = xstrdup(value); | |
450 | return 0; | |
451 | } | |
452 | ||
a9cc857a | 453 | if (!strcmp(var, "core.whitespace")) { |
cf1b7869 | 454 | whitespace_rule_cfg = parse_whitespace_rule(value); |
a9cc857a JH |
455 | return 0; |
456 | } | |
457 | ||
1ab661dd | 458 | /* Add other config variables here and to Documentation/config.txt. */ |
17712991 LT |
459 | return 0; |
460 | } | |
461 | ||
4f629539 | 462 | int git_config_from_file(config_fn_t fn, const char *filename) |
17712991 LT |
463 | { |
464 | int ret; | |
4f629539 | 465 | FILE *f = fopen(filename, "r"); |
17712991 LT |
466 | |
467 | ret = -1; | |
468 | if (f) { | |
469 | config_file = f; | |
4f629539 | 470 | config_file_name = filename; |
17712991 | 471 | config_linenr = 1; |
02e5ba4a | 472 | config_file_eof = 0; |
17712991 LT |
473 | ret = git_parse_file(fn); |
474 | fclose(f); | |
4f629539 | 475 | config_file_name = NULL; |
17712991 LT |
476 | } |
477 | return ret; | |
478 | } | |
10bea152 | 479 | |
506b17b1 JS |
480 | const char *git_etc_gitconfig(void) |
481 | { | |
7f0e39fa JS |
482 | static const char *system_wide; |
483 | if (!system_wide) { | |
484 | system_wide = ETC_GITCONFIG; | |
485 | if (!is_absolute_path(system_wide)) { | |
486 | /* interpret path relative to exec-dir */ | |
487 | const char *exec_path = git_exec_path(); | |
488 | system_wide = prefix_path(exec_path, strlen(exec_path), | |
489 | system_wide); | |
490 | } | |
491 | } | |
492 | return system_wide; | |
506b17b1 JS |
493 | } |
494 | ||
4f629539 JH |
495 | int git_config(config_fn_t fn) |
496 | { | |
5f1a63e0 JS |
497 | int ret = 0; |
498 | char *repo_config = NULL; | |
499 | const char *home = NULL, *filename; | |
500 | ||
501 | /* $GIT_CONFIG makes git read _only_ the given config file, | |
502 | * $GIT_CONFIG_LOCAL will make it process it in addition to the | |
503 | * global config file, the same way it would the per-repository | |
504 | * config file otherwise. */ | |
d4ebc36c | 505 | filename = getenv(CONFIG_ENVIRONMENT); |
5f1a63e0 | 506 | if (!filename) { |
506b17b1 JS |
507 | if (!access(git_etc_gitconfig(), R_OK)) |
508 | ret += git_config_from_file(fn, git_etc_gitconfig()); | |
5f1a63e0 | 509 | home = getenv("HOME"); |
d4ebc36c | 510 | filename = getenv(CONFIG_LOCAL_ENVIRONMENT); |
5f1a63e0 | 511 | if (!filename) |
9befac47 | 512 | filename = repo_config = xstrdup(git_path("config")); |
7f29f7a9 | 513 | } |
5f1a63e0 JS |
514 | |
515 | if (home) { | |
9befac47 | 516 | char *user_config = xstrdup(mkpath("%s/.gitconfig", home)); |
e33d0611 | 517 | if (!access(user_config, R_OK)) |
5f1a63e0 JS |
518 | ret = git_config_from_file(fn, user_config); |
519 | free(user_config); | |
520 | } | |
521 | ||
522 | ret += git_config_from_file(fn, filename); | |
4cac42b1 | 523 | free(repo_config); |
5f1a63e0 | 524 | return ret; |
4f629539 JH |
525 | } |
526 | ||
10bea152 JS |
527 | /* |
528 | * Find all the stuff for git_config_set() below. | |
529 | */ | |
4ddba79d JS |
530 | |
531 | #define MAX_MATCHES 512 | |
532 | ||
10bea152 JS |
533 | static struct { |
534 | int baselen; | |
535 | char* key; | |
f98d863d | 536 | int do_not_match; |
10bea152 | 537 | regex_t* value_regex; |
4ddba79d | 538 | int multi_replace; |
dc49cd76 | 539 | size_t offset[MAX_MATCHES]; |
10bea152 JS |
540 | enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state; |
541 | int seen; | |
542 | } store; | |
543 | ||
f98d863d JS |
544 | static int matches(const char* key, const char* value) |
545 | { | |
546 | return !strcmp(key, store.key) && | |
547 | (store.value_regex == NULL || | |
548 | (store.do_not_match ^ | |
549 | !regexec(store.value_regex, value, 0, NULL, 0))); | |
550 | } | |
551 | ||
10bea152 JS |
552 | static int store_aux(const char* key, const char* value) |
553 | { | |
ae9ee41d JH |
554 | const char *ep; |
555 | size_t section_len; | |
556 | ||
10bea152 JS |
557 | switch (store.state) { |
558 | case KEY_SEEN: | |
f98d863d | 559 | if (matches(key, value)) { |
4ddba79d | 560 | if (store.seen == 1 && store.multi_replace == 0) { |
10bea152 JS |
561 | fprintf(stderr, |
562 | "Warning: %s has multiple values\n", | |
563 | key); | |
4ddba79d JS |
564 | } else if (store.seen >= MAX_MATCHES) { |
565 | fprintf(stderr, "Too many matches\n"); | |
566 | return 1; | |
10bea152 | 567 | } |
4ddba79d JS |
568 | |
569 | store.offset[store.seen] = ftell(config_file); | |
10bea152 JS |
570 | store.seen++; |
571 | } | |
572 | break; | |
573 | case SECTION_SEEN: | |
ae9ee41d JH |
574 | /* |
575 | * What we are looking for is in store.key (both | |
576 | * section and var), and its section part is baselen | |
577 | * long. We found key (again, both section and var). | |
578 | * We would want to know if this key is in the same | |
579 | * section as what we are looking for. We already | |
580 | * know we are in the same section as what should | |
581 | * hold store.key. | |
582 | */ | |
583 | ep = strrchr(key, '.'); | |
584 | section_len = ep - key; | |
585 | ||
586 | if ((section_len != store.baselen) || | |
587 | memcmp(key, store.key, section_len+1)) { | |
10bea152 JS |
588 | store.state = SECTION_END_SEEN; |
589 | break; | |
ae9ee41d JH |
590 | } |
591 | ||
592 | /* | |
593 | * Do not increment matches: this is no match, but we | |
594 | * just made sure we are in the desired section. | |
595 | */ | |
596 | store.offset[store.seen] = ftell(config_file); | |
10bea152 JS |
597 | /* fallthru */ |
598 | case SECTION_END_SEEN: | |
599 | case START: | |
f98d863d | 600 | if (matches(key, value)) { |
4ddba79d | 601 | store.offset[store.seen] = ftell(config_file); |
10bea152 JS |
602 | store.state = KEY_SEEN; |
603 | store.seen++; | |
d14f7764 LT |
604 | } else { |
605 | if (strrchr(key, '.') - key == store.baselen && | |
bdf0ef08 | 606 | !strncmp(key, store.key, store.baselen)) { |
93ddef3e | 607 | store.state = SECTION_SEEN; |
bdf0ef08 | 608 | store.offset[store.seen] = ftell(config_file); |
d14f7764 | 609 | } |
bdf0ef08 | 610 | } |
10bea152 JS |
611 | } |
612 | return 0; | |
613 | } | |
614 | ||
b79d18c9 | 615 | static int write_error(void) |
480c9e52 AW |
616 | { |
617 | fprintf(stderr, "Failed to write new configuration file\n"); | |
618 | ||
619 | /* Same error code as "failed to rename". */ | |
620 | return 4; | |
621 | } | |
622 | ||
623 | static int store_write_section(int fd, const char* key) | |
10bea152 | 624 | { |
cb891a59 KH |
625 | const char *dot; |
626 | int i, success; | |
627 | struct strbuf sb; | |
d14f7764 | 628 | |
cb891a59 KH |
629 | strbuf_init(&sb, 0); |
630 | dot = memchr(key, '.', store.baselen); | |
d14f7764 | 631 | if (dot) { |
cb891a59 KH |
632 | strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key); |
633 | for (i = dot - key + 1; i < store.baselen; i++) { | |
634 | if (key[i] == '"') | |
635 | strbuf_addch(&sb, '\\'); | |
636 | strbuf_addch(&sb, key[i]); | |
d14f7764 | 637 | } |
cb891a59 KH |
638 | strbuf_addstr(&sb, "\"]\n"); |
639 | } else { | |
640 | strbuf_addf(&sb, "[%.*s]\n", store.baselen, key); | |
d14f7764 LT |
641 | } |
642 | ||
cb891a59 KH |
643 | success = write_in_full(fd, sb.buf, sb.len) == sb.len; |
644 | strbuf_release(&sb); | |
480c9e52 | 645 | |
cb891a59 | 646 | return success; |
10bea152 JS |
647 | } |
648 | ||
480c9e52 | 649 | static int store_write_pair(int fd, const char* key, const char* value) |
10bea152 | 650 | { |
cb891a59 KH |
651 | int i, success; |
652 | int length = strlen(key + store.baselen + 1); | |
653 | const char *quote = ""; | |
654 | struct strbuf sb; | |
cdd4fb15 | 655 | |
6281f394 JM |
656 | /* |
657 | * Check to see if the value needs to be surrounded with a dq pair. | |
658 | * Note that problematic characters are always backslash-quoted; this | |
659 | * check is about not losing leading or trailing SP and strings that | |
660 | * follow beginning-of-comment characters (i.e. ';' and '#') by the | |
661 | * configuration parser. | |
662 | */ | |
cdd4fb15 | 663 | if (value[0] == ' ') |
cb891a59 | 664 | quote = "\""; |
cdd4fb15 BG |
665 | for (i = 0; value[i]; i++) |
666 | if (value[i] == ';' || value[i] == '#') | |
cb891a59 KH |
667 | quote = "\""; |
668 | if (i && value[i - 1] == ' ') | |
669 | quote = "\""; | |
670 | ||
671 | strbuf_init(&sb, 0); | |
672 | strbuf_addf(&sb, "\t%.*s = %s", | |
673 | length, key + store.baselen + 1, quote); | |
10bea152 | 674 | |
10bea152 JS |
675 | for (i = 0; value[i]; i++) |
676 | switch (value[i]) { | |
480c9e52 | 677 | case '\n': |
cb891a59 | 678 | strbuf_addstr(&sb, "\\n"); |
480c9e52 AW |
679 | break; |
680 | case '\t': | |
cb891a59 | 681 | strbuf_addstr(&sb, "\\t"); |
480c9e52 AW |
682 | break; |
683 | case '"': | |
684 | case '\\': | |
cb891a59 | 685 | strbuf_addch(&sb, '\\'); |
480c9e52 | 686 | default: |
cb891a59 | 687 | strbuf_addch(&sb, value[i]); |
480c9e52 AW |
688 | break; |
689 | } | |
cb891a59 KH |
690 | strbuf_addf(&sb, "%s\n", quote); |
691 | ||
692 | success = write_in_full(fd, sb.buf, sb.len) == sb.len; | |
693 | strbuf_release(&sb); | |
694 | ||
695 | return success; | |
10bea152 JS |
696 | } |
697 | ||
dc49cd76 SP |
698 | static ssize_t find_beginning_of_line(const char* contents, size_t size, |
699 | size_t offset_, int* found_bracket) | |
4ddba79d | 700 | { |
dc49cd76 SP |
701 | size_t equal_offset = size, bracket_offset = size; |
702 | ssize_t offset; | |
4ddba79d | 703 | |
7a31cc0f | 704 | contline: |
a6080a0a | 705 | for (offset = offset_-2; offset > 0 |
4ddba79d JS |
706 | && contents[offset] != '\n'; offset--) |
707 | switch (contents[offset]) { | |
708 | case '=': equal_offset = offset; break; | |
709 | case ']': bracket_offset = offset; break; | |
710 | } | |
7a31cc0f FL |
711 | if (offset > 0 && contents[offset-1] == '\\') { |
712 | offset_ = offset; | |
713 | goto contline; | |
714 | } | |
4ddba79d JS |
715 | if (bracket_offset < equal_offset) { |
716 | *found_bracket = 1; | |
717 | offset = bracket_offset+1; | |
718 | } else | |
719 | offset++; | |
720 | ||
721 | return offset; | |
722 | } | |
723 | ||
10bea152 JS |
724 | int git_config_set(const char* key, const char* value) |
725 | { | |
4ddba79d | 726 | return git_config_set_multivar(key, value, NULL, 0); |
10bea152 JS |
727 | } |
728 | ||
729 | /* | |
730 | * If value==NULL, unset in (remove from) config, | |
731 | * if value_regex!=NULL, disregard key/value pairs where value does not match. | |
4ddba79d JS |
732 | * if multi_replace==0, nothing, or only one matching key/value is replaced, |
733 | * else all matching key/values (regardless how many) are removed, | |
734 | * before the new pair is written. | |
10bea152 JS |
735 | * |
736 | * Returns 0 on success. | |
737 | * | |
738 | * This function does this: | |
739 | * | |
740 | * - it locks the config file by creating ".git/config.lock" | |
741 | * | |
742 | * - it then parses the config using store_aux() as validator to find | |
743 | * the position on the key/value pair to replace. If it is to be unset, | |
744 | * it must be found exactly once. | |
745 | * | |
746 | * - the config file is mmap()ed and the part before the match (if any) is | |
747 | * written to the lock file, then the changed part and the rest. | |
748 | * | |
749 | * - the config file is removed and the lock file rename()d to it. | |
750 | * | |
751 | */ | |
752 | int git_config_set_multivar(const char* key, const char* value, | |
4ddba79d | 753 | const char* value_regex, int multi_replace) |
10bea152 | 754 | { |
d14f7764 | 755 | int i, dot; |
f8ba655e | 756 | int fd = -1, in_fd; |
dafc88b1 | 757 | int ret; |
9c3796fc | 758 | char* config_filename; |
6cbf973c | 759 | struct lock_file *lock = NULL; |
b17e659d | 760 | const char* last_dot = strrchr(key, '.'); |
4ddba79d | 761 | |
d4ebc36c | 762 | config_filename = getenv(CONFIG_ENVIRONMENT); |
9c3796fc | 763 | if (!config_filename) { |
d4ebc36c | 764 | config_filename = getenv(CONFIG_LOCAL_ENVIRONMENT); |
9c3796fc JS |
765 | if (!config_filename) |
766 | config_filename = git_path("config"); | |
767 | } | |
9befac47 | 768 | config_filename = xstrdup(config_filename); |
9c3796fc | 769 | |
10bea152 JS |
770 | /* |
771 | * Since "key" actually contains the section name and the real | |
772 | * key name separated by a dot, we have to know where the dot is. | |
773 | */ | |
b17e659d | 774 | |
dafc88b1 | 775 | if (last_dot == NULL) { |
10bea152 | 776 | fprintf(stderr, "key does not contain a section: %s\n", key); |
dafc88b1 SH |
777 | ret = 2; |
778 | goto out_free; | |
10bea152 | 779 | } |
b17e659d JS |
780 | store.baselen = last_dot - key; |
781 | ||
782 | store.multi_replace = multi_replace; | |
10bea152 JS |
783 | |
784 | /* | |
785 | * Validate the key and while at it, lower case it for matching. | |
786 | */ | |
2d7320d0 | 787 | store.key = xmalloc(strlen(key) + 1); |
d14f7764 LT |
788 | dot = 0; |
789 | for (i = 0; key[i]; i++) { | |
790 | unsigned char c = key[i]; | |
791 | if (c == '.') | |
792 | dot = 1; | |
793 | /* Leave the extended basename untouched.. */ | |
794 | if (!dot || i > store.baselen) { | |
38c5afa8 | 795 | if (!iskeychar(c) || (i == store.baselen+1 && !isalpha(c))) { |
d14f7764 LT |
796 | fprintf(stderr, "invalid key: %s\n", key); |
797 | free(store.key); | |
798 | ret = 1; | |
799 | goto out_free; | |
800 | } | |
801 | c = tolower(c); | |
6f71686e JS |
802 | } else if (c == '\n') { |
803 | fprintf(stderr, "invalid key (newline): %s\n", key); | |
804 | free(store.key); | |
805 | ret = 1; | |
806 | goto out_free; | |
d14f7764 LT |
807 | } |
808 | store.key[i] = c; | |
809 | } | |
3dd94e3b | 810 | store.key[i] = 0; |
10bea152 JS |
811 | |
812 | /* | |
6cbf973c | 813 | * The lock serves a purpose in addition to locking: the new |
10bea152 JS |
814 | * contents of .git/config will be written into it. |
815 | */ | |
6cbf973c BS |
816 | lock = xcalloc(sizeof(struct lock_file), 1); |
817 | fd = hold_lock_file_for_update(lock, config_filename, 0); | |
818 | if (fd < 0) { | |
10bea152 JS |
819 | fprintf(stderr, "could not lock config file\n"); |
820 | free(store.key); | |
dafc88b1 SH |
821 | ret = -1; |
822 | goto out_free; | |
10bea152 JS |
823 | } |
824 | ||
825 | /* | |
826 | * If .git/config does not exist yet, write a minimal version. | |
827 | */ | |
88fb958b AR |
828 | in_fd = open(config_filename, O_RDONLY); |
829 | if ( in_fd < 0 ) { | |
10bea152 JS |
830 | free(store.key); |
831 | ||
88fb958b AR |
832 | if ( ENOENT != errno ) { |
833 | error("opening %s: %s", config_filename, | |
834 | strerror(errno)); | |
dafc88b1 SH |
835 | ret = 3; /* same as "invalid config file" */ |
836 | goto out_free; | |
88fb958b | 837 | } |
10bea152 JS |
838 | /* if nothing to unset, error out */ |
839 | if (value == NULL) { | |
dafc88b1 SH |
840 | ret = 5; |
841 | goto out_free; | |
10bea152 JS |
842 | } |
843 | ||
844 | store.key = (char*)key; | |
480c9e52 | 845 | if (!store_write_section(fd, key) || |
93c1e079 JH |
846 | !store_write_pair(fd, key, value)) |
847 | goto write_err_out; | |
848 | } else { | |
88fb958b | 849 | struct stat st; |
10bea152 | 850 | char* contents; |
dc49cd76 SP |
851 | size_t contents_sz, copy_begin, copy_end; |
852 | int i, new_line = 0; | |
10bea152 JS |
853 | |
854 | if (value_regex == NULL) | |
855 | store.value_regex = NULL; | |
856 | else { | |
f98d863d JS |
857 | if (value_regex[0] == '!') { |
858 | store.do_not_match = 1; | |
859 | value_regex++; | |
860 | } else | |
861 | store.do_not_match = 0; | |
862 | ||
2d7320d0 | 863 | store.value_regex = (regex_t*)xmalloc(sizeof(regex_t)); |
10bea152 JS |
864 | if (regcomp(store.value_regex, value_regex, |
865 | REG_EXTENDED)) { | |
7246ed43 | 866 | fprintf(stderr, "Invalid pattern: %s\n", |
10bea152 JS |
867 | value_regex); |
868 | free(store.value_regex); | |
dafc88b1 SH |
869 | ret = 6; |
870 | goto out_free; | |
10bea152 JS |
871 | } |
872 | } | |
873 | ||
4ddba79d | 874 | store.offset[0] = 0; |
10bea152 JS |
875 | store.state = START; |
876 | store.seen = 0; | |
877 | ||
878 | /* | |
879 | * After this, store.offset will contain the *end* offset | |
880 | * of the last match, or remain at 0 if no match was found. | |
881 | * As a side effect, we make sure to transform only a valid | |
882 | * existing config file. | |
883 | */ | |
9c3796fc | 884 | if (git_config_from_file(store_aux, config_filename)) { |
10bea152 JS |
885 | fprintf(stderr, "invalid config file\n"); |
886 | free(store.key); | |
887 | if (store.value_regex != NULL) { | |
888 | regfree(store.value_regex); | |
889 | free(store.value_regex); | |
890 | } | |
dafc88b1 SH |
891 | ret = 3; |
892 | goto out_free; | |
10bea152 JS |
893 | } |
894 | ||
895 | free(store.key); | |
896 | if (store.value_regex != NULL) { | |
897 | regfree(store.value_regex); | |
898 | free(store.value_regex); | |
899 | } | |
900 | ||
4ddba79d JS |
901 | /* if nothing to unset, or too many matches, error out */ |
902 | if ((store.seen == 0 && value == NULL) || | |
903 | (store.seen > 1 && multi_replace == 0)) { | |
dafc88b1 SH |
904 | ret = 5; |
905 | goto out_free; | |
10bea152 JS |
906 | } |
907 | ||
88fb958b | 908 | fstat(in_fd, &st); |
dc49cd76 SP |
909 | contents_sz = xsize_t(st.st_size); |
910 | contents = xmmap(NULL, contents_sz, PROT_READ, | |
10bea152 JS |
911 | MAP_PRIVATE, in_fd, 0); |
912 | close(in_fd); | |
913 | ||
4ddba79d JS |
914 | if (store.seen == 0) |
915 | store.seen = 1; | |
916 | ||
917 | for (i = 0, copy_begin = 0; i < store.seen; i++) { | |
918 | if (store.offset[i] == 0) { | |
dc49cd76 | 919 | store.offset[i] = copy_end = contents_sz; |
4ddba79d JS |
920 | } else if (store.state != KEY_SEEN) { |
921 | copy_end = store.offset[i]; | |
10bea152 | 922 | } else |
4ddba79d | 923 | copy_end = find_beginning_of_line( |
dc49cd76 | 924 | contents, contents_sz, |
4ddba79d JS |
925 | store.offset[i]-2, &new_line); |
926 | ||
02e5ba4a JK |
927 | if (copy_end > 0 && contents[copy_end-1] != '\n') |
928 | new_line = 1; | |
929 | ||
4ddba79d JS |
930 | /* write the first part of the config */ |
931 | if (copy_end > copy_begin) { | |
93c1e079 JH |
932 | if (write_in_full(fd, contents + copy_begin, |
933 | copy_end - copy_begin) < | |
934 | copy_end - copy_begin) | |
935 | goto write_err_out; | |
936 | if (new_line && | |
937 | write_in_full(fd, "\n", 1) != 1) | |
938 | goto write_err_out; | |
4ddba79d JS |
939 | } |
940 | copy_begin = store.offset[i]; | |
10bea152 JS |
941 | } |
942 | ||
10bea152 JS |
943 | /* write the pair (value == NULL means unset) */ |
944 | if (value != NULL) { | |
93c1e079 JH |
945 | if (store.state == START) { |
946 | if (!store_write_section(fd, key)) | |
947 | goto write_err_out; | |
480c9e52 | 948 | } |
93c1e079 JH |
949 | if (!store_write_pair(fd, key, value)) |
950 | goto write_err_out; | |
10bea152 JS |
951 | } |
952 | ||
953 | /* write the rest of the config */ | |
dc49cd76 | 954 | if (copy_begin < contents_sz) |
93c1e079 | 955 | if (write_in_full(fd, contents + copy_begin, |
dc49cd76 SP |
956 | contents_sz - copy_begin) < |
957 | contents_sz - copy_begin) | |
93c1e079 | 958 | goto write_err_out; |
10bea152 | 959 | |
dc49cd76 | 960 | munmap(contents, contents_sz); |
10bea152 JS |
961 | } |
962 | ||
4ed7cd3a | 963 | if (commit_lock_file(lock) < 0) { |
6cbf973c | 964 | fprintf(stderr, "Cannot commit config file!\n"); |
dafc88b1 SH |
965 | ret = 4; |
966 | goto out_free; | |
10bea152 JS |
967 | } |
968 | ||
6cbf973c BS |
969 | /* |
970 | * lock is committed, so don't try to roll it back below. | |
971 | * NOTE: Since lockfile.c keeps a linked list of all created | |
972 | * lock_file structures, it isn't safe to free(lock). It's | |
973 | * better to just leave it hanging around. | |
974 | */ | |
975 | lock = NULL; | |
dafc88b1 SH |
976 | ret = 0; |
977 | ||
978 | out_free: | |
6cbf973c BS |
979 | if (lock) |
980 | rollback_lock_file(lock); | |
4cac42b1 | 981 | free(config_filename); |
dafc88b1 | 982 | return ret; |
93c1e079 JH |
983 | |
984 | write_err_out: | |
985 | ret = write_error(); | |
986 | goto out_free; | |
987 | ||
10bea152 JS |
988 | } |
989 | ||
118f8b24 PB |
990 | static int section_name_match (const char *buf, const char *name) |
991 | { | |
992 | int i = 0, j = 0, dot = 0; | |
993 | for (; buf[i] && buf[i] != ']'; i++) { | |
994 | if (!dot && isspace(buf[i])) { | |
995 | dot = 1; | |
996 | if (name[j++] != '.') | |
997 | break; | |
998 | for (i++; isspace(buf[i]); i++) | |
999 | ; /* do nothing */ | |
1000 | if (buf[i] != '"') | |
1001 | break; | |
1002 | continue; | |
1003 | } | |
1004 | if (buf[i] == '\\' && dot) | |
1005 | i++; | |
1006 | else if (buf[i] == '"' && dot) { | |
1007 | for (i++; isspace(buf[i]); i++) | |
1008 | ; /* do_nothing */ | |
1009 | break; | |
1010 | } | |
1011 | if (buf[i] != name[j++]) | |
1012 | break; | |
1013 | } | |
1014 | return (buf[i] == ']' && name[j] == 0); | |
1015 | } | |
1016 | ||
1017 | /* if new_name == NULL, the section is removed instead */ | |
0667fcfb JS |
1018 | int git_config_rename_section(const char *old_name, const char *new_name) |
1019 | { | |
118f8b24 | 1020 | int ret = 0, remove = 0; |
fc1905bb | 1021 | char *config_filename; |
0667fcfb JS |
1022 | struct lock_file *lock = xcalloc(sizeof(struct lock_file), 1); |
1023 | int out_fd; | |
1024 | char buf[1024]; | |
1025 | ||
d4ebc36c | 1026 | config_filename = getenv(CONFIG_ENVIRONMENT); |
0667fcfb | 1027 | if (!config_filename) { |
d4ebc36c | 1028 | config_filename = getenv(CONFIG_LOCAL_ENVIRONMENT); |
0667fcfb JS |
1029 | if (!config_filename) |
1030 | config_filename = git_path("config"); | |
1031 | } | |
1032 | config_filename = xstrdup(config_filename); | |
1033 | out_fd = hold_lock_file_for_update(lock, config_filename, 0); | |
fc1905bb JH |
1034 | if (out_fd < 0) { |
1035 | ret = error("Could not lock config file!"); | |
1036 | goto out; | |
1037 | } | |
0667fcfb | 1038 | |
fc1905bb | 1039 | if (!(config_file = fopen(config_filename, "rb"))) { |
01ebb9dc GB |
1040 | /* no config file means nothing to rename, no error */ |
1041 | goto unlock_and_out; | |
fc1905bb | 1042 | } |
0667fcfb JS |
1043 | |
1044 | while (fgets(buf, sizeof(buf), config_file)) { | |
1045 | int i; | |
480c9e52 | 1046 | int length; |
0667fcfb JS |
1047 | for (i = 0; buf[i] && isspace(buf[i]); i++) |
1048 | ; /* do nothing */ | |
1049 | if (buf[i] == '[') { | |
1050 | /* it's a section */ | |
118f8b24 PB |
1051 | if (section_name_match (&buf[i+1], old_name)) { |
1052 | ret++; | |
1053 | if (new_name == NULL) { | |
1054 | remove = 1; | |
0667fcfb JS |
1055 | continue; |
1056 | } | |
0667fcfb | 1057 | store.baselen = strlen(new_name); |
480c9e52 AW |
1058 | if (!store_write_section(out_fd, new_name)) { |
1059 | ret = write_error(); | |
1060 | goto out; | |
1061 | } | |
0667fcfb JS |
1062 | continue; |
1063 | } | |
118f8b24 | 1064 | remove = 0; |
0667fcfb | 1065 | } |
118f8b24 PB |
1066 | if (remove) |
1067 | continue; | |
480c9e52 AW |
1068 | length = strlen(buf); |
1069 | if (write_in_full(out_fd, buf, length) != length) { | |
1070 | ret = write_error(); | |
1071 | goto out; | |
1072 | } | |
0667fcfb | 1073 | } |
fc1905bb | 1074 | fclose(config_file); |
01ebb9dc | 1075 | unlock_and_out: |
4ed7cd3a | 1076 | if (commit_lock_file(lock) < 0) |
480c9e52 | 1077 | ret = error("Cannot commit config file!"); |
fc1905bb JH |
1078 | out: |
1079 | free(config_filename); | |
0667fcfb JS |
1080 | return ret; |
1081 | } |