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1 | /* -*-c-*- |
2 | * |
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3 | * $Id: sw_info.c,v 1.5 1999/06/24 16:02:12 mdw Exp $ |
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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 $ |
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32 | * Revision 1.5 1999/06/24 16:02:12 mdw |
33 | * Fix call to `execl'. |
34 | * |
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35 | * Revision 1.4 1999/06/24 15:57:07 mdw |
36 | * Stupid bug fix. Code wouldn't even compile. Tut. |
37 | * |
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38 | * Revision 1.3 1999/06/24 15:51:59 mdw |
39 | * Add support for the `sw-precommit' script. |
40 | * |
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41 | * Revision 1.2 1999/06/18 18:58:45 mdw |
42 | * Various tidyings. |
43 | * |
44 | * Revision 1.1.1.1 1999/06/02 16:53:35 mdw |
45 | * Initial import. |
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46 | * |
47 | */ |
48 | |
49 | /*----- Header files ------------------------------------------------------*/ |
50 | |
51 | #include "config.h" |
52 | |
53 | #include <ctype.h> |
54 | #include <errno.h> |
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55 | #include <signal.h> |
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56 | #include <stddef.h> |
57 | #include <stdio.h> |
58 | #include <stdlib.h> |
59 | #include <string.h> |
60 | #include <time.h> |
61 | |
62 | #include <sys/types.h> |
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63 | #include <sys/wait.h> |
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64 | #include <pwd.h> |
65 | #include <unistd.h> |
66 | |
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67 | #ifndef DECL_ENVIRON |
68 | extern char **environ; |
69 | #endif |
70 | |
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71 | #include <mLib/alloc.h> |
72 | #include <mLib/dstr.h> |
73 | #include <mLib/lock.h> |
74 | #include <mLib/quis.h> |
75 | #include <mLib/report.h> |
76 | |
77 | #include "sw_arch.h" |
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78 | #include "sw_env.h" |
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79 | #include "sw_info.h" |
80 | |
81 | /*----- Static variables --------------------------------------------------*/ |
82 | |
83 | static struct swfield { |
84 | char *name; |
85 | size_t off; |
86 | char *desc; |
87 | } swfields[] = { |
88 | { "package", offsetof(swinfo, package), "Package" }, |
89 | { "version", offsetof(swinfo, version), "Version" }, |
90 | { "maintainer", offsetof(swinfo, maintainer), "Maintained by" }, |
91 | { "date", offsetof(swinfo, date), "Last modified" }, |
92 | { "only-arch", offsetof(swinfo, only_arch), "Only build for" }, |
93 | { "arch", offsetof(swinfo, arch), "Successfully built" }, |
94 | { 0, 0 } |
95 | }; |
96 | typedef struct swfield swfield; |
97 | |
98 | #define SWINFO(sw, off) (*(char **)((char *)sw + off)) |
99 | |
100 | /*----- Main code ---------------------------------------------------------*/ |
101 | |
102 | /* --- @swinfo_clear@ --- * |
103 | * |
104 | * Arguments: @swinfo *sw@ = pointe to info block |
105 | * |
106 | * Returns: --- |
107 | * |
108 | * Use: Clears an info block so that it doesn't contain anything. |
109 | * This is mainly useful when building skeletons to apply using |
110 | * @swinfo_update@. |
111 | */ |
112 | |
113 | void swinfo_clear(swinfo *sw) |
114 | { |
115 | swfield *f; |
116 | for (f = swfields; f->name; f++) |
117 | SWINFO(sw, f->off) = 0; |
118 | } |
119 | |
120 | /* --- @swinfo_fetch@ --- * |
121 | * |
122 | * Arguments: @swinfo *sw@ = pointer to info block to fill in |
123 | * |
124 | * Returns: Zero if OK, else nonzero. |
125 | * |
126 | * Use: Fills in the info block if it can. |
127 | */ |
128 | |
129 | int swinfo_fetch(swinfo *sw) |
130 | { |
131 | FILE *fp; |
132 | dstr d = DSTR_INIT; |
133 | swfield *f; |
134 | int line = 0; |
135 | |
136 | /* --- Initialize the various fields --- */ |
137 | |
138 | swinfo_clear(sw); |
139 | |
140 | /* --- Open the data file --- */ |
141 | |
142 | if ((fp = fopen(".sw-info", "r")) == 0) |
143 | return (-1); |
144 | |
145 | /* --- Read the lines from the file --- */ |
146 | |
147 | for (; dstr_putline(&d, fp) != EOF; DRESET(&d)) { |
148 | char *p = d.buf; |
149 | char *key, *value; |
150 | line++; |
151 | |
152 | /* --- Find the field name --- */ |
153 | |
154 | while (isspace((unsigned char)*p)) |
155 | p++; |
156 | if (*p == 0 || *p == '#') |
157 | continue; |
158 | |
159 | /* --- Find the end of the field name --- */ |
160 | |
161 | key = p; |
162 | while (*p && *p != '=' && !isspace((unsigned char)*p)) |
163 | p++; |
164 | |
165 | /* --- Skip an optional `=' sign --- */ |
166 | |
167 | { |
168 | char ch = *p; |
169 | if (ch) |
170 | *p++ = 0; |
171 | while (isspace((unsigned char)*p)) |
172 | p++; |
173 | if (*p == '=' && ch != '=') { |
174 | p++; |
175 | while (isspace((unsigned char)*p)) |
176 | p++; |
177 | } |
178 | } |
179 | |
180 | value = p; |
181 | |
182 | /* --- Look up the key in the table --- */ |
183 | |
184 | for (f = swfields; f->name; f++) { |
185 | if (strcmp(key, f->name) == 0) |
186 | goto found; |
187 | } |
188 | moan("unknown key `%s' at line %i in `.sw-info'", key, line); |
189 | continue; |
190 | |
191 | /* --- Put the value in --- */ |
192 | |
193 | found: |
194 | SWINFO(sw, f->off) = xstrdup(value); |
195 | } |
196 | |
197 | fclose(fp); |
198 | dstr_destroy(&d); |
199 | return (0); |
200 | } |
201 | |
202 | /* --- @swinfo_sanity@ --- * |
203 | * |
204 | * Arguments: @swinfo *sw@ = pointer to an info block |
205 | * |
206 | * Returns: Yes, if the block is OK. |
207 | * |
208 | * Use: Objects if the information in the info block is bad. |
209 | */ |
210 | |
211 | void swinfo_sanity(swinfo *sw) |
212 | { |
213 | if (!sw->package) |
214 | die(1, "unknown package name. Try `%s setup PACKAGE VERSION'.", QUIS); |
215 | if (!sw->version) |
216 | die(1, "unknown package version. Try `%s setup PACKAGE VERSION'.", |
217 | QUIS); |
218 | if (!sw->maintainer) |
219 | die(1, "unknown maintainer. Try `%s setup PACKAGE VERSION'.", QUIS); |
220 | if (!sw->date) |
221 | die(1, "unknown date. Try `%s setup PACKAGE VERSION'.", QUIS); |
222 | } |
223 | |
224 | /* --- @swinfo_put@ --- * |
225 | * |
226 | * Arguments: @swinfo *sw@ = pointer to an info block |
227 | * |
228 | * Returns: Zero if it worked, nonzero if not. |
229 | * |
230 | * Use: Writes an info block to the appropriate file. |
231 | */ |
232 | |
233 | int swinfo_put(swinfo *sw) |
234 | { |
235 | FILE *fp; |
236 | swfield *f; |
237 | int e; |
238 | |
239 | /* --- Quick sanity check --- */ |
240 | |
241 | swinfo_sanity(sw); |
242 | |
243 | /* --- Write the new data out --- */ |
244 | |
245 | if ((fp = fopen(".sw-info.new", "w")) == 0) |
246 | return (-1); |
247 | for (f = swfields; f->name; f++) { |
248 | if (!SWINFO(sw, f->off)) |
249 | continue; |
250 | if (fprintf(fp, "%s = %s\n", f->name, SWINFO(sw, f->off)) == EOF) { |
251 | e = errno; |
252 | fclose(fp); |
253 | goto tidy_0; |
254 | } |
255 | } |
256 | if (fclose(fp) == EOF) { |
257 | e = errno; |
258 | goto tidy_0; |
259 | } |
260 | |
261 | /* --- Carefully! replace the old one --- * |
262 | * |
263 | * Keep an old one around just in case, unless the renames fail because |
264 | * files don't exist. |
265 | */ |
266 | |
267 | remove(".sw-info.older"); /* Don't care if this fails */ |
268 | if (rename(".sw-info.old", ".sw-info.older") && errno != ENOENT) |
269 | { e = errno; goto tidy_0; } |
270 | if (rename(".sw-info", ".sw-info.old") && errno != ENOENT) |
271 | { e = errno; goto tidy_1; } |
272 | if (rename(".sw-info.new", ".sw-info")) |
273 | { e = errno; goto tidy_2; } |
274 | remove(".sw-info.older"); /* Don't care if this fails */ |
275 | return (0); |
276 | |
277 | /* --- Tidy up if anything went tits-up --- */ |
278 | |
279 | tidy_2: |
280 | rename(".sw-info.old", ".sw-info"); |
281 | tidy_1: |
282 | rename(".sw-info.older", ".sw-info.old"); |
283 | tidy_0: |
284 | remove(".sw-info.new"); |
285 | errno = e; |
286 | return (-1); |
287 | } |
288 | |
289 | /* --- @swinfo_destroy@ --- * |
290 | * |
291 | * Arguments: @swinfo *sw@ = pointer to info block |
292 | * |
293 | * Returns: --- |
294 | * |
295 | * Use: Destroys an info block when it's not useful any more. |
296 | */ |
297 | |
298 | void swinfo_destroy(swinfo *sw) |
299 | { |
300 | swfield *f; |
301 | |
302 | for (f = swfields; f->name; f++) { |
303 | if (SWINFO(sw, f->off)) |
304 | free(SWINFO(sw, f->off)); |
305 | } |
306 | } |
307 | |
308 | /* --- @swinfo_update@ --- * |
309 | * |
310 | * Arguments: @swinfo *sw@ = pointer to info block |
311 | * @swinfo *skel@ = pointer to skeleton values |
312 | * |
313 | * Returns: --- |
314 | * |
315 | * Use: Updates the fields in an information block, except for the |
316 | * architecture names stuff. (I'll leave that for later, |
317 | * because it's rather more involved. |
318 | */ |
319 | |
320 | void swinfo_update(swinfo *sw, swinfo *skel) |
321 | { |
322 | char ubuf[20]; |
323 | char dbuf[20]; |
324 | swfield *f; |
325 | |
326 | /* --- Set up a default maintainer --- */ |
327 | |
328 | if (!skel->maintainer && !sw->maintainer) { |
329 | char *u = getenv("USER"); |
330 | |
331 | if (!u) |
332 | u = getenv("LOGNAME"); |
333 | if (!u) { |
334 | struct passwd *pw = getpwuid(getuid()); |
335 | if (!pw) { |
336 | moan("you don't seem to exist"); |
337 | sprintf(ubuf, "uid %i", (int)getuid()); |
338 | u = ubuf; |
339 | } else |
340 | u = pw->pw_name; |
341 | } |
342 | skel->maintainer = u; |
343 | } |
344 | |
345 | /* --- Set up a default date --- */ |
346 | |
347 | { |
348 | time_t t = time(0); |
349 | struct tm *tm = localtime(&t); |
350 | strftime(dbuf, sizeof(dbuf), "%Y-%m-%d", tm); |
351 | skel->date = dbuf; |
352 | } |
353 | |
354 | /* --- Set a default architecture list --- */ |
355 | |
356 | if (!skel->arch && !sw->arch) |
357 | skel->arch = ""; |
358 | |
359 | /* --- Grind through all the fields --- */ |
360 | |
361 | for (f = swfields; f->name; f++) { |
362 | if (!SWINFO(skel, f->off) || strcmp(SWINFO(skel, f->off), "-") == 0) |
363 | continue; |
364 | if (SWINFO(sw, f->off)) |
365 | free(SWINFO(sw, f->off)); |
366 | SWINFO(sw, f->off) = xstrdup(SWINFO(skel, f->off)); |
367 | } |
368 | } |
369 | |
370 | /*----- Subcommands -------------------------------------------------------*/ |
371 | |
372 | /* --- @sw_setup@ --- */ |
373 | |
374 | int sw_setup(int argc, char *argv[]) |
375 | { |
376 | swinfo sw, skel; |
377 | if (argc < 3 || argc > 4) |
378 | die(1, "Usage: setup PACKAGE VERSION [MAINTAINER]"); |
379 | swinfo_fetch(&sw); |
380 | swinfo_clear(&skel); |
381 | skel.package = argv[1]; |
382 | skel.version = argv[2]; |
383 | if (argv[3]) |
384 | skel.maintainer = argv[3]; |
385 | swinfo_update(&sw, &skel); |
386 | swinfo_put(&sw); |
387 | return (0); |
388 | } |
389 | |
390 | /* --- @sw_status@ --- */ |
391 | |
392 | int sw_status(int argc, char *argv[]) |
393 | { |
394 | swinfo sw; |
395 | swfield *f; |
396 | if (swinfo_fetch(&sw)) { |
397 | die(1, "couldn't read build status: %s (try running setup)", |
398 | strerror(errno)); |
399 | } |
400 | for (f = swfields; f->name; f++) { |
401 | if (SWINFO(&sw, f->off)) |
402 | printf("%s: %s\n", f->desc, SWINFO(&sw, f->off)); |
403 | } |
404 | return (0); |
405 | } |
406 | |
407 | /* --- @sw_commit@ --- */ |
408 | |
409 | int sw_commit(int argc, char *argv[]) |
410 | { |
411 | swinfo sw; |
412 | |
413 | if (argc != 1) |
414 | die(1, "Usage: commit"); |
415 | if (swinfo_fetch(&sw)) { |
416 | die(1, "couldn't read build status: %s (try running setup)", |
417 | strerror(errno)); |
418 | } |
419 | |
420 | /* --- Make sure everything has been built properly --- */ |
421 | |
422 | { |
423 | archcons *a, *aa; |
424 | archcons *all = arch_readtab(); |
425 | |
426 | if (sw.arch) { |
427 | for (a = aa = arch_filter(all, sw.arch, 0, 0); a; a = a->cdr) |
428 | a->car->flags |= archFlag_built; |
429 | arch_free(aa); |
430 | } |
431 | |
432 | aa = arch_filter(all, sw.only_arch, archFlag_built, 0); |
433 | if (aa) { |
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434 | const char *sep = ""; |
435 | fprintf(stderr, "%s: not built for ", QUIS); |
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436 | for (a = aa; a; a = a->cdr) { |
437 | fprintf(stderr, "%s%s", sep, a->car->arch); |
438 | sep = ", "; |
439 | } |
440 | fputc('\n', stderr); |
441 | exit(1); |
442 | } |
443 | arch_free(aa); |
444 | } |
445 | |
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446 | /* --- Run the local precommit check script --- */ |
447 | |
448 | { |
449 | pid_t kid; |
450 | struct sigaction sa, sa_int, sa_quit; |
451 | int status; |
452 | |
453 | /* --- Make sure I can trap the child's death --- */ |
454 | |
455 | sa.sa_handler = SIG_IGN; |
456 | sigemptyset(&sa.sa_mask); |
457 | sa.sa_flags = 0; |
458 | if (sigaction(SIGINT, &sa, &sa_int) || sigaction(SIGQUIT, &sa, &sa_quit)) |
459 | die(1, "couldn't set signal dispositions: %s", strerror(errno)); |
460 | |
461 | /* --- Spawn off a child process --- */ |
462 | |
463 | fflush(0); |
464 | kid = fork(); |
465 | if (kid < 0) |
466 | die(1, "error from fork: %s", strerror(errno)); |
467 | if (kid == 0) { |
468 | sym_table t; |
469 | |
470 | /* --- Re-enable signals --- */ |
471 | |
472 | sigaction(SIGINT, &sa_int, 0); |
473 | sigaction(SIGQUIT, &sa_quit, 0); |
474 | |
475 | /* --- Set up the environment --- */ |
476 | |
477 | sym_create(&t); |
478 | env_import(&t, environ); |
479 | env_put(&t, "SW_PACKAGE", sw.package); |
480 | env_put(&t, "SW_VERSION", sw.version); |
481 | env_put(&t, "SW_MAINTAINER", sw.maintainer); |
482 | env_put(&t, "SW_DATE", sw.date); |
483 | env_put(&t, "SW_ARCHLIST", sw.arch); |
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484 | env_put(&t, "SW_PREFIX", PREFIX); |
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485 | environ = env_export(&t); |
486 | |
487 | /* --- Run the commit check script --- */ |
488 | |
489 | execl(PREFIX "/share/sw-precommit", "sw-precommit", |
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490 | sw.package, (char *)0); |
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491 | if (errno == ENOENT) |
492 | _exit(0); |
493 | die(1, "couldn't run " PREFIX "/share/sw-precommit: %s", |
494 | strerror(errno)); |
495 | } |
496 | |
497 | /* --- Wait for the child to finish --- */ |
498 | |
499 | if (waitpid(kid, &status, 0) < 0) |
500 | die(1, "error waiting for child: %s", strerror(errno)); |
501 | if (!(WIFEXITED(status) && WEXITSTATUS(status) == 0)) |
502 | die(1, "sw-precommit failed"); |
503 | sigaction(SIGINT, &sa_int, 0); |
504 | sigaction(SIGQUIT, &sa_quit, 0); |
505 | } |
506 | |
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507 | /* --- Write to the index file --- */ |
508 | |
509 | { |
510 | FILE *fp = fopen(PREFIX "/sw-index", "a"); |
511 | swfield *f; |
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512 | const char *sep = ""; |
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513 | |
514 | if (!fp) |
515 | die(1, "couldn't open index file: %s", strerror(errno)); |
516 | if (lock_file(fileno(fp), LOCK_EXCL)) |
517 | die(1, "couldn't obtain lock on index file: %s", strerror(errno)); |
518 | |
519 | for (f = swfields; f->name; f++) { |
520 | if (SWINFO(&sw, f->off)) { |
521 | fprintf(fp, "%s%s = %s", sep, f->name, SWINFO(&sw, f->off)); |
522 | sep = "; "; |
523 | } |
524 | } |
525 | fputc('\n', fp); |
526 | fclose(fp); |
527 | } |
528 | |
529 | return (0); |
530 | } |
531 | |
532 | /*----- That's all, folks -------------------------------------------------*/ |