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1 | /* -*-c-*- |
2 | * |
9796a787 |
3 | * $Id: sw_info.c,v 1.6 2004/04/08 01:52:19 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 | |
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29 | /*----- Header files ------------------------------------------------------*/ |
30 | |
31 | #include "config.h" |
32 | |
33 | #include <ctype.h> |
34 | #include <errno.h> |
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35 | #include <signal.h> |
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36 | #include <stddef.h> |
37 | #include <stdio.h> |
38 | #include <stdlib.h> |
39 | #include <string.h> |
40 | #include <time.h> |
41 | |
42 | #include <sys/types.h> |
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43 | #include <sys/wait.h> |
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44 | #include <pwd.h> |
45 | #include <unistd.h> |
46 | |
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47 | #ifndef DECL_ENVIRON |
48 | extern char **environ; |
49 | #endif |
50 | |
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51 | #include <mLib/alloc.h> |
52 | #include <mLib/dstr.h> |
53 | #include <mLib/lock.h> |
54 | #include <mLib/quis.h> |
55 | #include <mLib/report.h> |
56 | |
57 | #include "sw_arch.h" |
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58 | #include "sw_env.h" |
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59 | #include "sw_info.h" |
60 | |
61 | /*----- Static variables --------------------------------------------------*/ |
62 | |
63 | static struct swfield { |
64 | char *name; |
65 | size_t off; |
66 | char *desc; |
67 | } swfields[] = { |
68 | { "package", offsetof(swinfo, package), "Package" }, |
69 | { "version", offsetof(swinfo, version), "Version" }, |
70 | { "maintainer", offsetof(swinfo, maintainer), "Maintained by" }, |
71 | { "date", offsetof(swinfo, date), "Last modified" }, |
72 | { "only-arch", offsetof(swinfo, only_arch), "Only build for" }, |
73 | { "arch", offsetof(swinfo, arch), "Successfully built" }, |
74 | { 0, 0 } |
75 | }; |
76 | typedef struct swfield swfield; |
77 | |
78 | #define SWINFO(sw, off) (*(char **)((char *)sw + off)) |
79 | |
80 | /*----- Main code ---------------------------------------------------------*/ |
81 | |
82 | /* --- @swinfo_clear@ --- * |
83 | * |
84 | * Arguments: @swinfo *sw@ = pointe to info block |
85 | * |
86 | * Returns: --- |
87 | * |
88 | * Use: Clears an info block so that it doesn't contain anything. |
89 | * This is mainly useful when building skeletons to apply using |
90 | * @swinfo_update@. |
91 | */ |
92 | |
93 | void swinfo_clear(swinfo *sw) |
94 | { |
95 | swfield *f; |
96 | for (f = swfields; f->name; f++) |
97 | SWINFO(sw, f->off) = 0; |
98 | } |
99 | |
100 | /* --- @swinfo_fetch@ --- * |
101 | * |
102 | * Arguments: @swinfo *sw@ = pointer to info block to fill in |
103 | * |
104 | * Returns: Zero if OK, else nonzero. |
105 | * |
106 | * Use: Fills in the info block if it can. |
107 | */ |
108 | |
109 | int swinfo_fetch(swinfo *sw) |
110 | { |
111 | FILE *fp; |
112 | dstr d = DSTR_INIT; |
113 | swfield *f; |
114 | int line = 0; |
115 | |
116 | /* --- Initialize the various fields --- */ |
117 | |
118 | swinfo_clear(sw); |
119 | |
120 | /* --- Open the data file --- */ |
121 | |
122 | if ((fp = fopen(".sw-info", "r")) == 0) |
123 | return (-1); |
124 | |
125 | /* --- Read the lines from the file --- */ |
126 | |
127 | for (; dstr_putline(&d, fp) != EOF; DRESET(&d)) { |
128 | char *p = d.buf; |
129 | char *key, *value; |
130 | line++; |
131 | |
132 | /* --- Find the field name --- */ |
133 | |
134 | while (isspace((unsigned char)*p)) |
135 | p++; |
136 | if (*p == 0 || *p == '#') |
137 | continue; |
138 | |
139 | /* --- Find the end of the field name --- */ |
140 | |
141 | key = p; |
142 | while (*p && *p != '=' && !isspace((unsigned char)*p)) |
143 | p++; |
144 | |
145 | /* --- Skip an optional `=' sign --- */ |
146 | |
147 | { |
148 | char ch = *p; |
149 | if (ch) |
150 | *p++ = 0; |
151 | while (isspace((unsigned char)*p)) |
152 | p++; |
153 | if (*p == '=' && ch != '=') { |
154 | p++; |
155 | while (isspace((unsigned char)*p)) |
156 | p++; |
157 | } |
158 | } |
159 | |
160 | value = p; |
161 | |
162 | /* --- Look up the key in the table --- */ |
163 | |
164 | for (f = swfields; f->name; f++) { |
165 | if (strcmp(key, f->name) == 0) |
166 | goto found; |
167 | } |
168 | moan("unknown key `%s' at line %i in `.sw-info'", key, line); |
169 | continue; |
170 | |
171 | /* --- Put the value in --- */ |
172 | |
173 | found: |
174 | SWINFO(sw, f->off) = xstrdup(value); |
175 | } |
176 | |
177 | fclose(fp); |
178 | dstr_destroy(&d); |
179 | return (0); |
180 | } |
181 | |
182 | /* --- @swinfo_sanity@ --- * |
183 | * |
184 | * Arguments: @swinfo *sw@ = pointer to an info block |
185 | * |
186 | * Returns: Yes, if the block is OK. |
187 | * |
188 | * Use: Objects if the information in the info block is bad. |
189 | */ |
190 | |
191 | void swinfo_sanity(swinfo *sw) |
192 | { |
193 | if (!sw->package) |
194 | die(1, "unknown package name. Try `%s setup PACKAGE VERSION'.", QUIS); |
195 | if (!sw->version) |
196 | die(1, "unknown package version. Try `%s setup PACKAGE VERSION'.", |
197 | QUIS); |
198 | if (!sw->maintainer) |
199 | die(1, "unknown maintainer. Try `%s setup PACKAGE VERSION'.", QUIS); |
200 | if (!sw->date) |
201 | die(1, "unknown date. Try `%s setup PACKAGE VERSION'.", QUIS); |
202 | } |
203 | |
204 | /* --- @swinfo_put@ --- * |
205 | * |
206 | * Arguments: @swinfo *sw@ = pointer to an info block |
207 | * |
208 | * Returns: Zero if it worked, nonzero if not. |
209 | * |
210 | * Use: Writes an info block to the appropriate file. |
211 | */ |
212 | |
213 | int swinfo_put(swinfo *sw) |
214 | { |
215 | FILE *fp; |
216 | swfield *f; |
217 | int e; |
218 | |
219 | /* --- Quick sanity check --- */ |
220 | |
221 | swinfo_sanity(sw); |
222 | |
223 | /* --- Write the new data out --- */ |
224 | |
225 | if ((fp = fopen(".sw-info.new", "w")) == 0) |
226 | return (-1); |
227 | for (f = swfields; f->name; f++) { |
228 | if (!SWINFO(sw, f->off)) |
229 | continue; |
230 | if (fprintf(fp, "%s = %s\n", f->name, SWINFO(sw, f->off)) == EOF) { |
231 | e = errno; |
232 | fclose(fp); |
233 | goto tidy_0; |
234 | } |
235 | } |
236 | if (fclose(fp) == EOF) { |
237 | e = errno; |
238 | goto tidy_0; |
239 | } |
240 | |
241 | /* --- Carefully! replace the old one --- * |
242 | * |
243 | * Keep an old one around just in case, unless the renames fail because |
244 | * files don't exist. |
245 | */ |
246 | |
247 | remove(".sw-info.older"); /* Don't care if this fails */ |
248 | if (rename(".sw-info.old", ".sw-info.older") && errno != ENOENT) |
249 | { e = errno; goto tidy_0; } |
250 | if (rename(".sw-info", ".sw-info.old") && errno != ENOENT) |
251 | { e = errno; goto tidy_1; } |
252 | if (rename(".sw-info.new", ".sw-info")) |
253 | { e = errno; goto tidy_2; } |
254 | remove(".sw-info.older"); /* Don't care if this fails */ |
255 | return (0); |
256 | |
257 | /* --- Tidy up if anything went tits-up --- */ |
258 | |
259 | tidy_2: |
260 | rename(".sw-info.old", ".sw-info"); |
261 | tidy_1: |
262 | rename(".sw-info.older", ".sw-info.old"); |
263 | tidy_0: |
264 | remove(".sw-info.new"); |
265 | errno = e; |
266 | return (-1); |
267 | } |
268 | |
269 | /* --- @swinfo_destroy@ --- * |
270 | * |
271 | * Arguments: @swinfo *sw@ = pointer to info block |
272 | * |
273 | * Returns: --- |
274 | * |
275 | * Use: Destroys an info block when it's not useful any more. |
276 | */ |
277 | |
278 | void swinfo_destroy(swinfo *sw) |
279 | { |
280 | swfield *f; |
281 | |
282 | for (f = swfields; f->name; f++) { |
283 | if (SWINFO(sw, f->off)) |
284 | free(SWINFO(sw, f->off)); |
285 | } |
286 | } |
287 | |
288 | /* --- @swinfo_update@ --- * |
289 | * |
290 | * Arguments: @swinfo *sw@ = pointer to info block |
291 | * @swinfo *skel@ = pointer to skeleton values |
292 | * |
293 | * Returns: --- |
294 | * |
295 | * Use: Updates the fields in an information block, except for the |
296 | * architecture names stuff. (I'll leave that for later, |
297 | * because it's rather more involved. |
298 | */ |
299 | |
300 | void swinfo_update(swinfo *sw, swinfo *skel) |
301 | { |
302 | char ubuf[20]; |
303 | char dbuf[20]; |
304 | swfield *f; |
305 | |
306 | /* --- Set up a default maintainer --- */ |
307 | |
308 | if (!skel->maintainer && !sw->maintainer) { |
309 | char *u = getenv("USER"); |
310 | |
311 | if (!u) |
312 | u = getenv("LOGNAME"); |
313 | if (!u) { |
314 | struct passwd *pw = getpwuid(getuid()); |
315 | if (!pw) { |
316 | moan("you don't seem to exist"); |
317 | sprintf(ubuf, "uid %i", (int)getuid()); |
318 | u = ubuf; |
319 | } else |
320 | u = pw->pw_name; |
321 | } |
322 | skel->maintainer = u; |
323 | } |
324 | |
325 | /* --- Set up a default date --- */ |
326 | |
327 | { |
328 | time_t t = time(0); |
329 | struct tm *tm = localtime(&t); |
330 | strftime(dbuf, sizeof(dbuf), "%Y-%m-%d", tm); |
331 | skel->date = dbuf; |
332 | } |
333 | |
334 | /* --- Set a default architecture list --- */ |
335 | |
336 | if (!skel->arch && !sw->arch) |
337 | skel->arch = ""; |
338 | |
339 | /* --- Grind through all the fields --- */ |
340 | |
341 | for (f = swfields; f->name; f++) { |
342 | if (!SWINFO(skel, f->off) || strcmp(SWINFO(skel, f->off), "-") == 0) |
343 | continue; |
344 | if (SWINFO(sw, f->off)) |
345 | free(SWINFO(sw, f->off)); |
346 | SWINFO(sw, f->off) = xstrdup(SWINFO(skel, f->off)); |
347 | } |
348 | } |
349 | |
350 | /*----- Subcommands -------------------------------------------------------*/ |
351 | |
352 | /* --- @sw_setup@ --- */ |
353 | |
354 | int sw_setup(int argc, char *argv[]) |
355 | { |
356 | swinfo sw, skel; |
357 | if (argc < 3 || argc > 4) |
358 | die(1, "Usage: setup PACKAGE VERSION [MAINTAINER]"); |
359 | swinfo_fetch(&sw); |
360 | swinfo_clear(&skel); |
361 | skel.package = argv[1]; |
362 | skel.version = argv[2]; |
363 | if (argv[3]) |
364 | skel.maintainer = argv[3]; |
365 | swinfo_update(&sw, &skel); |
366 | swinfo_put(&sw); |
367 | return (0); |
368 | } |
369 | |
370 | /* --- @sw_status@ --- */ |
371 | |
372 | int sw_status(int argc, char *argv[]) |
373 | { |
374 | swinfo sw; |
375 | swfield *f; |
376 | if (swinfo_fetch(&sw)) { |
377 | die(1, "couldn't read build status: %s (try running setup)", |
378 | strerror(errno)); |
379 | } |
380 | for (f = swfields; f->name; f++) { |
381 | if (SWINFO(&sw, f->off)) |
382 | printf("%s: %s\n", f->desc, SWINFO(&sw, f->off)); |
383 | } |
384 | return (0); |
385 | } |
386 | |
387 | /* --- @sw_commit@ --- */ |
388 | |
389 | int sw_commit(int argc, char *argv[]) |
390 | { |
391 | swinfo sw; |
392 | |
393 | if (argc != 1) |
394 | die(1, "Usage: commit"); |
395 | if (swinfo_fetch(&sw)) { |
396 | die(1, "couldn't read build status: %s (try running setup)", |
397 | strerror(errno)); |
398 | } |
399 | |
400 | /* --- Make sure everything has been built properly --- */ |
401 | |
402 | { |
403 | archcons *a, *aa; |
404 | archcons *all = arch_readtab(); |
405 | |
406 | if (sw.arch) { |
407 | for (a = aa = arch_filter(all, sw.arch, 0, 0); a; a = a->cdr) |
408 | a->car->flags |= archFlag_built; |
409 | arch_free(aa); |
410 | } |
411 | |
412 | aa = arch_filter(all, sw.only_arch, archFlag_built, 0); |
413 | if (aa) { |
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414 | const char *sep = ""; |
415 | fprintf(stderr, "%s: not built for ", QUIS); |
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416 | for (a = aa; a; a = a->cdr) { |
417 | fprintf(stderr, "%s%s", sep, a->car->arch); |
418 | sep = ", "; |
419 | } |
420 | fputc('\n', stderr); |
421 | exit(1); |
422 | } |
423 | arch_free(aa); |
424 | } |
425 | |
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426 | /* --- Run the local precommit check script --- */ |
427 | |
428 | { |
429 | pid_t kid; |
430 | struct sigaction sa, sa_int, sa_quit; |
431 | int status; |
432 | |
433 | /* --- Make sure I can trap the child's death --- */ |
434 | |
435 | sa.sa_handler = SIG_IGN; |
436 | sigemptyset(&sa.sa_mask); |
437 | sa.sa_flags = 0; |
438 | if (sigaction(SIGINT, &sa, &sa_int) || sigaction(SIGQUIT, &sa, &sa_quit)) |
439 | die(1, "couldn't set signal dispositions: %s", strerror(errno)); |
440 | |
441 | /* --- Spawn off a child process --- */ |
442 | |
443 | fflush(0); |
444 | kid = fork(); |
445 | if (kid < 0) |
446 | die(1, "error from fork: %s", strerror(errno)); |
447 | if (kid == 0) { |
448 | sym_table t; |
449 | |
450 | /* --- Re-enable signals --- */ |
451 | |
452 | sigaction(SIGINT, &sa_int, 0); |
453 | sigaction(SIGQUIT, &sa_quit, 0); |
454 | |
455 | /* --- Set up the environment --- */ |
456 | |
457 | sym_create(&t); |
458 | env_import(&t, environ); |
459 | env_put(&t, "SW_PACKAGE", sw.package); |
460 | env_put(&t, "SW_VERSION", sw.version); |
461 | env_put(&t, "SW_MAINTAINER", sw.maintainer); |
462 | env_put(&t, "SW_DATE", sw.date); |
463 | env_put(&t, "SW_ARCHLIST", sw.arch); |
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464 | env_put(&t, "SW_PREFIX", PREFIX); |
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465 | environ = env_export(&t); |
466 | |
467 | /* --- Run the commit check script --- */ |
468 | |
469 | execl(PREFIX "/share/sw-precommit", "sw-precommit", |
77bef548 |
470 | sw.package, (char *)0); |
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471 | if (errno == ENOENT) |
472 | _exit(0); |
473 | die(1, "couldn't run " PREFIX "/share/sw-precommit: %s", |
474 | strerror(errno)); |
475 | } |
476 | |
477 | /* --- Wait for the child to finish --- */ |
478 | |
479 | if (waitpid(kid, &status, 0) < 0) |
480 | die(1, "error waiting for child: %s", strerror(errno)); |
481 | if (!(WIFEXITED(status) && WEXITSTATUS(status) == 0)) |
482 | die(1, "sw-precommit failed"); |
483 | sigaction(SIGINT, &sa_int, 0); |
484 | sigaction(SIGQUIT, &sa_quit, 0); |
485 | } |
486 | |
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487 | /* --- Write to the index file --- */ |
488 | |
489 | { |
490 | FILE *fp = fopen(PREFIX "/sw-index", "a"); |
491 | swfield *f; |
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492 | const char *sep = ""; |
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493 | |
494 | if (!fp) |
495 | die(1, "couldn't open index file: %s", strerror(errno)); |
496 | if (lock_file(fileno(fp), LOCK_EXCL)) |
497 | die(1, "couldn't obtain lock on index file: %s", strerror(errno)); |
498 | |
499 | for (f = swfields; f->name; f++) { |
500 | if (SWINFO(&sw, f->off)) { |
501 | fprintf(fp, "%s%s = %s", sep, f->name, SWINFO(&sw, f->off)); |
502 | sep = "; "; |
503 | } |
504 | } |
505 | fputc('\n', fp); |
506 | fclose(fp); |
507 | } |
508 | |
509 | return (0); |
510 | } |
511 | |
512 | /*----- That's all, folks -------------------------------------------------*/ |