3315e8b3 |
1 | /* -*-c-*- |
2 | * |
9662b11b |
3 | * $Id: sw_info.c,v 1.3 1999/06/24 15:51:59 mdw Exp $ |
3315e8b3 |
4 | * |
5 | * Maintenance of `.sw-info' files |
6 | * |
7 | * (c) 1999 EBI |
8 | */ |
9 | |
10 | /*----- Licensing notice --------------------------------------------------* |
11 | * |
12 | * This file is part of sw-tools. |
13 | * |
14 | * sw-tools is free software; you can redistribute it and/or modify |
15 | * it under the terms of the GNU General Public License as published by |
16 | * the Free Software Foundation; either version 2 of the License, or |
17 | * (at your option) any later version. |
18 | * |
19 | * sw-tools is distributed in the hope that it will be useful, |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
22 | * GNU General Public License for more details. |
23 | * |
24 | * You should have received a copy of the GNU General Public License |
25 | * along with sw-tools; if not, write to the Free Software Foundation, |
26 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
27 | */ |
28 | |
29 | /*----- Revision history --------------------------------------------------* |
30 | * |
31 | * $Log: sw_info.c,v $ |
9662b11b |
32 | * Revision 1.3 1999/06/24 15:51:59 mdw |
33 | * Add support for the `sw-precommit' script. |
34 | * |
e0465a2b |
35 | * Revision 1.2 1999/06/18 18:58:45 mdw |
36 | * Various tidyings. |
37 | * |
38 | * Revision 1.1.1.1 1999/06/02 16:53:35 mdw |
39 | * Initial import. |
3315e8b3 |
40 | * |
41 | */ |
42 | |
43 | /*----- Header files ------------------------------------------------------*/ |
44 | |
45 | #include "config.h" |
46 | |
47 | #include <ctype.h> |
48 | #include <errno.h> |
9662b11b |
49 | #include <signal.h> |
3315e8b3 |
50 | #include <stddef.h> |
51 | #include <stdio.h> |
52 | #include <stdlib.h> |
53 | #include <string.h> |
54 | #include <time.h> |
55 | |
56 | #include <sys/types.h> |
9662b11b |
57 | #include <sys/wait.h> |
3315e8b3 |
58 | #include <pwd.h> |
59 | #include <unistd.h> |
60 | |
9662b11b |
61 | #ifndef DECL_ENVIRON |
62 | extern char **environ; |
63 | #endif |
64 | |
3315e8b3 |
65 | #include <mLib/alloc.h> |
66 | #include <mLib/dstr.h> |
67 | #include <mLib/lock.h> |
68 | #include <mLib/quis.h> |
69 | #include <mLib/report.h> |
70 | |
71 | #include "sw_arch.h" |
9662b11b |
72 | #include "sw_env.h" |
3315e8b3 |
73 | #include "sw_info.h" |
74 | |
75 | /*----- Static variables --------------------------------------------------*/ |
76 | |
77 | static struct swfield { |
78 | char *name; |
79 | size_t off; |
80 | char *desc; |
81 | } swfields[] = { |
82 | { "package", offsetof(swinfo, package), "Package" }, |
83 | { "version", offsetof(swinfo, version), "Version" }, |
84 | { "maintainer", offsetof(swinfo, maintainer), "Maintained by" }, |
85 | { "date", offsetof(swinfo, date), "Last modified" }, |
86 | { "only-arch", offsetof(swinfo, only_arch), "Only build for" }, |
87 | { "arch", offsetof(swinfo, arch), "Successfully built" }, |
88 | { 0, 0 } |
89 | }; |
90 | typedef struct swfield swfield; |
91 | |
92 | #define SWINFO(sw, off) (*(char **)((char *)sw + off)) |
93 | |
94 | /*----- Main code ---------------------------------------------------------*/ |
95 | |
96 | /* --- @swinfo_clear@ --- * |
97 | * |
98 | * Arguments: @swinfo *sw@ = pointe to info block |
99 | * |
100 | * Returns: --- |
101 | * |
102 | * Use: Clears an info block so that it doesn't contain anything. |
103 | * This is mainly useful when building skeletons to apply using |
104 | * @swinfo_update@. |
105 | */ |
106 | |
107 | void swinfo_clear(swinfo *sw) |
108 | { |
109 | swfield *f; |
110 | for (f = swfields; f->name; f++) |
111 | SWINFO(sw, f->off) = 0; |
112 | } |
113 | |
114 | /* --- @swinfo_fetch@ --- * |
115 | * |
116 | * Arguments: @swinfo *sw@ = pointer to info block to fill in |
117 | * |
118 | * Returns: Zero if OK, else nonzero. |
119 | * |
120 | * Use: Fills in the info block if it can. |
121 | */ |
122 | |
123 | int swinfo_fetch(swinfo *sw) |
124 | { |
125 | FILE *fp; |
126 | dstr d = DSTR_INIT; |
127 | swfield *f; |
128 | int line = 0; |
129 | |
130 | /* --- Initialize the various fields --- */ |
131 | |
132 | swinfo_clear(sw); |
133 | |
134 | /* --- Open the data file --- */ |
135 | |
136 | if ((fp = fopen(".sw-info", "r")) == 0) |
137 | return (-1); |
138 | |
139 | /* --- Read the lines from the file --- */ |
140 | |
141 | for (; dstr_putline(&d, fp) != EOF; DRESET(&d)) { |
142 | char *p = d.buf; |
143 | char *key, *value; |
144 | line++; |
145 | |
146 | /* --- Find the field name --- */ |
147 | |
148 | while (isspace((unsigned char)*p)) |
149 | p++; |
150 | if (*p == 0 || *p == '#') |
151 | continue; |
152 | |
153 | /* --- Find the end of the field name --- */ |
154 | |
155 | key = p; |
156 | while (*p && *p != '=' && !isspace((unsigned char)*p)) |
157 | p++; |
158 | |
159 | /* --- Skip an optional `=' sign --- */ |
160 | |
161 | { |
162 | char ch = *p; |
163 | if (ch) |
164 | *p++ = 0; |
165 | while (isspace((unsigned char)*p)) |
166 | p++; |
167 | if (*p == '=' && ch != '=') { |
168 | p++; |
169 | while (isspace((unsigned char)*p)) |
170 | p++; |
171 | } |
172 | } |
173 | |
174 | value = p; |
175 | |
176 | /* --- Look up the key in the table --- */ |
177 | |
178 | for (f = swfields; f->name; f++) { |
179 | if (strcmp(key, f->name) == 0) |
180 | goto found; |
181 | } |
182 | moan("unknown key `%s' at line %i in `.sw-info'", key, line); |
183 | continue; |
184 | |
185 | /* --- Put the value in --- */ |
186 | |
187 | found: |
188 | SWINFO(sw, f->off) = xstrdup(value); |
189 | } |
190 | |
191 | fclose(fp); |
192 | dstr_destroy(&d); |
193 | return (0); |
194 | } |
195 | |
196 | /* --- @swinfo_sanity@ --- * |
197 | * |
198 | * Arguments: @swinfo *sw@ = pointer to an info block |
199 | * |
200 | * Returns: Yes, if the block is OK. |
201 | * |
202 | * Use: Objects if the information in the info block is bad. |
203 | */ |
204 | |
205 | void swinfo_sanity(swinfo *sw) |
206 | { |
207 | if (!sw->package) |
208 | die(1, "unknown package name. Try `%s setup PACKAGE VERSION'.", QUIS); |
209 | if (!sw->version) |
210 | die(1, "unknown package version. Try `%s setup PACKAGE VERSION'.", |
211 | QUIS); |
212 | if (!sw->maintainer) |
213 | die(1, "unknown maintainer. Try `%s setup PACKAGE VERSION'.", QUIS); |
214 | if (!sw->date) |
215 | die(1, "unknown date. Try `%s setup PACKAGE VERSION'.", QUIS); |
216 | } |
217 | |
218 | /* --- @swinfo_put@ --- * |
219 | * |
220 | * Arguments: @swinfo *sw@ = pointer to an info block |
221 | * |
222 | * Returns: Zero if it worked, nonzero if not. |
223 | * |
224 | * Use: Writes an info block to the appropriate file. |
225 | */ |
226 | |
227 | int swinfo_put(swinfo *sw) |
228 | { |
229 | FILE *fp; |
230 | swfield *f; |
231 | int e; |
232 | |
233 | /* --- Quick sanity check --- */ |
234 | |
235 | swinfo_sanity(sw); |
236 | |
237 | /* --- Write the new data out --- */ |
238 | |
239 | if ((fp = fopen(".sw-info.new", "w")) == 0) |
240 | return (-1); |
241 | for (f = swfields; f->name; f++) { |
242 | if (!SWINFO(sw, f->off)) |
243 | continue; |
244 | if (fprintf(fp, "%s = %s\n", f->name, SWINFO(sw, f->off)) == EOF) { |
245 | e = errno; |
246 | fclose(fp); |
247 | goto tidy_0; |
248 | } |
249 | } |
250 | if (fclose(fp) == EOF) { |
251 | e = errno; |
252 | goto tidy_0; |
253 | } |
254 | |
255 | /* --- Carefully! replace the old one --- * |
256 | * |
257 | * Keep an old one around just in case, unless the renames fail because |
258 | * files don't exist. |
259 | */ |
260 | |
261 | remove(".sw-info.older"); /* Don't care if this fails */ |
262 | if (rename(".sw-info.old", ".sw-info.older") && errno != ENOENT) |
263 | { e = errno; goto tidy_0; } |
264 | if (rename(".sw-info", ".sw-info.old") && errno != ENOENT) |
265 | { e = errno; goto tidy_1; } |
266 | if (rename(".sw-info.new", ".sw-info")) |
267 | { e = errno; goto tidy_2; } |
268 | remove(".sw-info.older"); /* Don't care if this fails */ |
269 | return (0); |
270 | |
271 | /* --- Tidy up if anything went tits-up --- */ |
272 | |
273 | tidy_2: |
274 | rename(".sw-info.old", ".sw-info"); |
275 | tidy_1: |
276 | rename(".sw-info.older", ".sw-info.old"); |
277 | tidy_0: |
278 | remove(".sw-info.new"); |
279 | errno = e; |
280 | return (-1); |
281 | } |
282 | |
283 | /* --- @swinfo_destroy@ --- * |
284 | * |
285 | * Arguments: @swinfo *sw@ = pointer to info block |
286 | * |
287 | * Returns: --- |
288 | * |
289 | * Use: Destroys an info block when it's not useful any more. |
290 | */ |
291 | |
292 | void swinfo_destroy(swinfo *sw) |
293 | { |
294 | swfield *f; |
295 | |
296 | for (f = swfields; f->name; f++) { |
297 | if (SWINFO(sw, f->off)) |
298 | free(SWINFO(sw, f->off)); |
299 | } |
300 | } |
301 | |
302 | /* --- @swinfo_update@ --- * |
303 | * |
304 | * Arguments: @swinfo *sw@ = pointer to info block |
305 | * @swinfo *skel@ = pointer to skeleton values |
306 | * |
307 | * Returns: --- |
308 | * |
309 | * Use: Updates the fields in an information block, except for the |
310 | * architecture names stuff. (I'll leave that for later, |
311 | * because it's rather more involved. |
312 | */ |
313 | |
314 | void swinfo_update(swinfo *sw, swinfo *skel) |
315 | { |
316 | char ubuf[20]; |
317 | char dbuf[20]; |
318 | swfield *f; |
319 | |
320 | /* --- Set up a default maintainer --- */ |
321 | |
322 | if (!skel->maintainer && !sw->maintainer) { |
323 | char *u = getenv("USER"); |
324 | |
325 | if (!u) |
326 | u = getenv("LOGNAME"); |
327 | if (!u) { |
328 | struct passwd *pw = getpwuid(getuid()); |
329 | if (!pw) { |
330 | moan("you don't seem to exist"); |
331 | sprintf(ubuf, "uid %i", (int)getuid()); |
332 | u = ubuf; |
333 | } else |
334 | u = pw->pw_name; |
335 | } |
336 | skel->maintainer = u; |
337 | } |
338 | |
339 | /* --- Set up a default date --- */ |
340 | |
341 | { |
342 | time_t t = time(0); |
343 | struct tm *tm = localtime(&t); |
344 | strftime(dbuf, sizeof(dbuf), "%Y-%m-%d", tm); |
345 | skel->date = dbuf; |
346 | } |
347 | |
348 | /* --- Set a default architecture list --- */ |
349 | |
350 | if (!skel->arch && !sw->arch) |
351 | skel->arch = ""; |
352 | |
353 | /* --- Grind through all the fields --- */ |
354 | |
355 | for (f = swfields; f->name; f++) { |
356 | if (!SWINFO(skel, f->off) || strcmp(SWINFO(skel, f->off), "-") == 0) |
357 | continue; |
358 | if (SWINFO(sw, f->off)) |
359 | free(SWINFO(sw, f->off)); |
360 | SWINFO(sw, f->off) = xstrdup(SWINFO(skel, f->off)); |
361 | } |
362 | } |
363 | |
364 | /*----- Subcommands -------------------------------------------------------*/ |
365 | |
366 | /* --- @sw_setup@ --- */ |
367 | |
368 | int sw_setup(int argc, char *argv[]) |
369 | { |
370 | swinfo sw, skel; |
371 | if (argc < 3 || argc > 4) |
372 | die(1, "Usage: setup PACKAGE VERSION [MAINTAINER]"); |
373 | swinfo_fetch(&sw); |
374 | swinfo_clear(&skel); |
375 | skel.package = argv[1]; |
376 | skel.version = argv[2]; |
377 | if (argv[3]) |
378 | skel.maintainer = argv[3]; |
379 | swinfo_update(&sw, &skel); |
380 | swinfo_put(&sw); |
381 | return (0); |
382 | } |
383 | |
384 | /* --- @sw_status@ --- */ |
385 | |
386 | int sw_status(int argc, char *argv[]) |
387 | { |
388 | swinfo sw; |
389 | swfield *f; |
390 | if (swinfo_fetch(&sw)) { |
391 | die(1, "couldn't read build status: %s (try running setup)", |
392 | strerror(errno)); |
393 | } |
394 | for (f = swfields; f->name; f++) { |
395 | if (SWINFO(&sw, f->off)) |
396 | printf("%s: %s\n", f->desc, SWINFO(&sw, f->off)); |
397 | } |
398 | return (0); |
399 | } |
400 | |
401 | /* --- @sw_commit@ --- */ |
402 | |
403 | int sw_commit(int argc, char *argv[]) |
404 | { |
405 | swinfo sw; |
406 | |
407 | if (argc != 1) |
408 | die(1, "Usage: commit"); |
409 | if (swinfo_fetch(&sw)) { |
410 | die(1, "couldn't read build status: %s (try running setup)", |
411 | strerror(errno)); |
412 | } |
413 | |
414 | /* --- Make sure everything has been built properly --- */ |
415 | |
416 | { |
417 | archcons *a, *aa; |
418 | archcons *all = arch_readtab(); |
419 | |
420 | if (sw.arch) { |
421 | for (a = aa = arch_filter(all, sw.arch, 0, 0); a; a = a->cdr) |
422 | a->car->flags |= archFlag_built; |
423 | arch_free(aa); |
424 | } |
425 | |
426 | aa = arch_filter(all, sw.only_arch, archFlag_built, 0); |
427 | if (aa) { |
e0465a2b |
428 | const char *sep = ""; |
429 | fprintf(stderr, "%s: not built for ", QUIS); |
3315e8b3 |
430 | for (a = aa; a; a = a->cdr) { |
431 | fprintf(stderr, "%s%s", sep, a->car->arch); |
432 | sep = ", "; |
433 | } |
434 | fputc('\n', stderr); |
435 | exit(1); |
436 | } |
437 | arch_free(aa); |
438 | } |
439 | |
9662b11b |
440 | /* --- Run the local precommit check script --- */ |
441 | |
442 | { |
443 | pid_t kid; |
444 | struct sigaction sa, sa_int, sa_quit; |
445 | int status; |
446 | |
447 | /* --- Make sure I can trap the child's death --- */ |
448 | |
449 | sa.sa_handler = SIG_IGN; |
450 | sigemptyset(&sa.sa_mask); |
451 | sa.sa_flags = 0; |
452 | if (sigaction(SIGINT, &sa, &sa_int) || sigaction(SIGQUIT, &sa, &sa_quit)) |
453 | die(1, "couldn't set signal dispositions: %s", strerror(errno)); |
454 | |
455 | /* --- Spawn off a child process --- */ |
456 | |
457 | fflush(0); |
458 | kid = fork(); |
459 | if (kid < 0) |
460 | die(1, "error from fork: %s", strerror(errno)); |
461 | if (kid == 0) { |
462 | sym_table t; |
463 | |
464 | /* --- Re-enable signals --- */ |
465 | |
466 | sigaction(SIGINT, &sa_int, 0); |
467 | sigaction(SIGQUIT, &sa_quit, 0); |
468 | |
469 | /* --- Set up the environment --- */ |
470 | |
471 | sym_create(&t); |
472 | env_import(&t, environ); |
473 | env_put(&t, "SW_PACKAGE", sw.package); |
474 | env_put(&t, "SW_VERSION", sw.version); |
475 | env_put(&t, "SW_MAINTAINER", sw.maintainer); |
476 | env_put(&t, "SW_DATE", sw.date); |
477 | env_put(&t, "SW_ARCHLIST", sw.arch); |
478 | env_put(&t, "SW_PREFIX", sw.prefix); |
479 | environ = env_export(&t); |
480 | |
481 | /* --- Run the commit check script --- */ |
482 | |
483 | execl(PREFIX "/share/sw-precommit", "sw-precommit", |
484 | sw.package, (void *)0); |
485 | if (errno == ENOENT) |
486 | _exit(0); |
487 | die(1, "couldn't run " PREFIX "/share/sw-precommit: %s", |
488 | strerror(errno)); |
489 | } |
490 | |
491 | /* --- Wait for the child to finish --- */ |
492 | |
493 | if (waitpid(kid, &status, 0) < 0) |
494 | die(1, "error waiting for child: %s", strerror(errno)); |
495 | if (!(WIFEXITED(status) && WEXITSTATUS(status) == 0)) |
496 | die(1, "sw-precommit failed"); |
497 | sigaction(SIGINT, &sa_int, 0); |
498 | sigaction(SIGQUIT, &sa_quit, 0); |
499 | } |
500 | |
3315e8b3 |
501 | /* --- Write to the index file --- */ |
502 | |
503 | { |
504 | FILE *fp = fopen(PREFIX "/sw-index", "a"); |
505 | swfield *f; |
e0465a2b |
506 | const char *sep = ""; |
3315e8b3 |
507 | |
508 | if (!fp) |
509 | die(1, "couldn't open index file: %s", strerror(errno)); |
510 | if (lock_file(fileno(fp), LOCK_EXCL)) |
511 | die(1, "couldn't obtain lock on index file: %s", strerror(errno)); |
512 | |
513 | for (f = swfields; f->name; f++) { |
514 | if (SWINFO(&sw, f->off)) { |
515 | fprintf(fp, "%s%s = %s", sep, f->name, SWINFO(&sw, f->off)); |
516 | sep = "; "; |
517 | } |
518 | } |
519 | fputc('\n', fp); |
520 | fclose(fp); |
521 | } |
522 | |
523 | return (0); |
524 | } |
525 | |
526 | /*----- That's all, folks -------------------------------------------------*/ |