summaryrefslogblamecommitdiff
path: root/src/commit.c
blob: 2c1d4b57299a8f5142a5deb18ded932abc0f9fc2 (plain) (tree)
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552









































































































                                                                                       
                                                                      

                                                                        
                                          

                                            
                                          
                                 

                                                                              











































                                                                             
                                           


                                                                                             





                                                                                       





























































































































































































































































































































































































                                                                                                             
/* commit.c - Alpine Package Keeper (APK)
 * Apply solver calculated changes to database.
 *
 * Copyright (C) 2008-2013 Timo Teräs <timo.teras@iki.fi>
 * All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published
 * by the Free Software Foundation. See http://www.gnu.org/ for details.
 */

#include <stdint.h>
#include <unistd.h>
#include "apk_defines.h"
#include "apk_database.h"
#include "apk_package.h"
#include "apk_solver.h"

#include "apk_print.h"

static inline int pkg_available(struct apk_database *db, struct apk_package *pkg)
{
	if (pkg->repos & db->available_repos)
		return TRUE;
	return FALSE;
}

static int print_change(struct apk_database *db, struct apk_change *change,
			int cur, int total)
{
	struct apk_name *name;
	struct apk_package *oldpkg = change->old_pkg;
	struct apk_package *newpkg = change->new_pkg;
	const char *msg = NULL;
	char status[32], n[512], *nameptr;
	apk_blob_t *oneversion = NULL;
	int r;

	snprintf(status, sizeof(status), "(%i/%i)", cur+1, total);
	status[sizeof(status) - 1] = 0;

	name = newpkg ? newpkg->name : oldpkg->name;
	if (change->new_repository_tag > 0) {
		snprintf(n, sizeof(n), "%s@" BLOB_FMT,
			 name->name,
			 BLOB_PRINTF(*db->repo_tags[change->new_repository_tag].name));
		n[sizeof(n) - 1] = 0;
		nameptr = n;
	} else {
		nameptr = name->name;
	}

	if (oldpkg == NULL) {
		msg = "Installing";
		oneversion = newpkg->version;
	} else if (newpkg == NULL) {
		msg = "Purging";
		oneversion = oldpkg->version;
	} else if (newpkg == oldpkg) {
		if (change->reinstall) {
			if (pkg_available(db, newpkg))
				msg = "Re-installing";
			else
				msg = "[APK unavailable, skipped] Re-installing";
		} else if (change->old_repository_tag != change->new_repository_tag) {
			msg = "Updating pinning";
		}
		oneversion = newpkg->version;
	} else {
		r = apk_pkg_version_compare(newpkg, oldpkg);
		switch (r) {
		case APK_VERSION_LESS:
			msg = "Downgrading";
			break;
		case APK_VERSION_EQUAL:
			msg = "Replacing";
			break;
		case APK_VERSION_GREATER:
			msg = "Upgrading";
			break;
		}
	}
	if (msg == NULL)
		return FALSE;

	if (oneversion) {
		apk_message("%s %s %s (" BLOB_FMT ")",
			    status, msg, nameptr,
			    BLOB_PRINTF(*oneversion));
	} else {
		apk_message("%s %s %s (" BLOB_FMT " -> " BLOB_FMT ")",
			    status, msg, nameptr,
			    BLOB_PRINTF(*oldpkg->version),
			    BLOB_PRINTF(*newpkg->version));
	}
	return TRUE;
}

struct apk_stats {
	unsigned int changes;
	unsigned int bytes;
	unsigned int packages;
};

static void count_change(struct apk_change *change, struct apk_stats *stats)
{
	if (change->new_pkg != change->old_pkg || change->reinstall) {
		if (change->new_pkg != NULL) {
			stats->bytes += change->new_pkg->installed_size;
			stats->packages++;
		}
		if (change->old_pkg != NULL)
			stats->packages++;
		stats->changes++;
	} else if (change->new_repository_tag != change->old_repository_tag) {
		stats->packages++;
		stats->changes++;
	}
}

static void draw_progress(int percent)
{
	const int bar_width = apk_get_screen_width() - 7;
	int i;

	fprintf(stderr, "\e7%3i%% [", percent);
	for (i = 0; i < bar_width * percent / 100; i++)
		fputc('#', stderr);
	for (; i < bar_width; i++)
		fputc(' ', stderr);
	fputc(']', stderr);
	fflush(stderr);
	fputs("\e8\e[0K", stderr);
}

struct progress {
	struct apk_stats done;
	struct apk_stats total;
	struct apk_package *pkg;
	size_t percent;
	int progress_fd;
};

static void update_progress(struct progress *prog, size_t percent, int force)
{
	if (prog->percent == percent && !force)
		return;
	prog->percent = percent;
	if (apk_flags & APK_PROGRESS)
		draw_progress(percent);
	if (prog->progress_fd != 0) {
		char buf[8];
		size_t n = snprintf(buf, sizeof(buf), "%zu\n", percent);
		write(prog->progress_fd, buf, n);
	}
}

static void progress_cb(void *ctx, size_t pkg_percent)
{
	struct progress *prog = (struct progress *) ctx;
	size_t partial = 0, percent, total;

	if (prog->pkg != NULL)
		partial = muldiv(pkg_percent, prog->pkg->installed_size, APK_PROGRESS_SCALE);
	total = prog->total.bytes + prog->total.packages;
	if (total > 0)
		percent = muldiv(100, prog->done.bytes + prog->done.packages + partial,
				 prog->total.bytes + prog->total.packages);
	else
		percent = 0;
	update_progress(prog, percent, pkg_percent == 0);
}

static int dump_packages(struct apk_changeset *changeset,
			 int (*cmp)(struct apk_change *change),
			 const char *msg)
{
	struct apk_change *change;
	struct apk_name *name;
	struct apk_indent indent = { .indent = 2 };
	int match = 0, i;

	for (i = 0; i < changeset->changes->num; i++) {
		change = &changeset->changes->item[i];
		if (!cmp(change))
			continue;
		if (match == 0)
			printf("%s:\n", msg);
		if (change->new_pkg != NULL)
			name = change->new_pkg->name;
		else
			name = change->old_pkg->name;

		apk_print_indented(&indent, APK_BLOB_STR(name->name));
		match++;
	}
	if (match)
		printf("\n");
	return match;
}

static int cmp_remove(struct apk_change *change)
{
	return change->new_pkg == NULL;
}

static int cmp_new(struct apk_change *change)
{
	return change->old_pkg == NULL;
}

static int cmp_downgrade(struct apk_change *change)
{
	if (change->new_pkg == NULL || change->old_pkg == NULL)
		return 0;
	if (apk_pkg_version_compare(change->new_pkg, change->old_pkg)
	    & APK_VERSION_LESS)
		return 1;
	return 0;
}

static int cmp_upgrade(struct apk_change *change)
{
	if (change->new_pkg == NULL || change->old_pkg == NULL)
		return 0;

	/* Count swapping package as upgrade too - this can happen if
	 * same package version is used after it was rebuilt against
	 * newer libraries. Basically, different (and probably newer)
	 * package, but equal version number. */
	if ((apk_pkg_version_compare(change->new_pkg, change->old_pkg) &
	     (APK_VERSION_GREATER | APK_VERSION_EQUAL)) &&
	    (change->new_pkg != change->old_pkg))
		return 1;

	return 0;
}

static void run_triggers(struct apk_database *db, struct apk_changeset *changeset)
{
	int i;

	if (apk_db_fire_triggers(db) == 0)
		return;

	for (i = 0; i < changeset->changes->num; i++) {
		struct apk_package *pkg = changeset->changes->item[i].new_pkg;
		struct apk_installed_package *ipkg;

		if (pkg == NULL)
			continue;

		ipkg = pkg->ipkg;
		if (ipkg->pending_triggers->num == 0)
			continue;

		*apk_string_array_add(&ipkg->pending_triggers) = NULL;
		apk_ipkg_run_script(ipkg, db, APK_SCRIPT_TRIGGER,
				    ipkg->pending_triggers->item);
		apk_string_array_free(&ipkg->pending_triggers);
	}
}

int apk_solver_commit_changeset(struct apk_database *db,
				struct apk_changeset *changeset,
				struct apk_dependency_array *world)
{
	struct progress prog;
	struct apk_change *change;
	int i, r = 0, size_diff = 0, size_unit;

	if (apk_db_check_world(db, world) != 0) {
		apk_error("Not committing changes due to missing repository tags. Use --force to override.");
		return -1;
	}

	if (changeset->changes == NULL)
		goto all_done;

	/* Count what needs to be done */
	memset(&prog, 0, sizeof(prog));
	prog.progress_fd = db->progress_fd;
	for (i = 0; i < changeset->changes->num; i++) {
		change = &changeset->changes->item[i];
		count_change(change, &prog.total);
		if (change->new_pkg)
			size_diff += change->new_pkg->installed_size;
		if (change->old_pkg)
			size_diff -= change->old_pkg->installed_size;
	}
	size_diff /= 1024;
	size_unit = 'K';
	if (abs(size_diff) > 10000) {
		size_diff /= 1024;
		size_unit = 'M';
	}

	if (apk_verbosity > 1 || (apk_flags & APK_INTERACTIVE)) {
		r = dump_packages(changeset, cmp_remove,
				  "The following packages will be REMOVED");
		r += dump_packages(changeset, cmp_downgrade,
				   "The following packages will be DOWNGRADED");
		if (r || (apk_flags & APK_INTERACTIVE) || apk_verbosity > 2) {
			dump_packages(changeset, cmp_new,
				      "The following NEW packages will be installed");
			dump_packages(changeset, cmp_upgrade,
				      "The following packages will be upgraded");
			printf("After this operation, %d %ciB of %s\n",
				abs(size_diff), size_unit,
				(size_diff < 0) ?
				"disk space will be freed." :
				"additional disk space will be used.");
		}
		if (changeset->changes->num > 0 &&
		    (apk_flags & APK_INTERACTIVE)) {
			printf("Do you want to continue [Y/n]? ");
			fflush(stdout);
			r = fgetc(stdin);
			if (r != 'y' && r != 'Y' && r != '\n')
				return -1;
		}
	}

	/* Go through changes */
	r = 0;
	for (i = 0; i < changeset->changes->num; i++) {
		change = &changeset->changes->item[i];

		if (print_change(db, change, prog.done.changes, prog.total.changes)) {
			prog.pkg = change->new_pkg;
			progress_cb(&prog, 0);

			if (!(apk_flags & APK_SIMULATE)) {
				if (change->old_pkg != change->new_pkg ||
				    (change->reinstall && pkg_available(db, change->new_pkg)))
					r = apk_db_install_pkg(db,
							       change->old_pkg, change->new_pkg,
							       progress_cb, &prog);
				if (r != 0)
					break;
				if (change->new_pkg)
					change->new_pkg->ipkg->repository_tag = change->new_repository_tag;
			}
		}

		count_change(change, &prog.done);
	}
	update_progress(&prog, 100, 1);

	run_triggers(db, changeset);

all_done:
	apk_dependency_array_copy(&db->world, world);
	apk_db_write_config(db);

	if (r == 0 && !db->performing_self_update) {
		if (apk_verbosity > 1) {
			apk_message("OK: %d packages, %d dirs, %d files, %zu MiB",
				    db->installed.stats.packages,
				    db->installed.stats.dirs,
				    db->installed.stats.files,
				    db->installed.stats.bytes / (1024 * 1024));
		} else {
			apk_message("OK: %zu MiB in %d packages",
				    db->installed.stats.bytes / (1024 * 1024),
				    db->installed.stats.packages);
		}
	}

	return r;
}

static void add_name_if_virtual(struct apk_name_array **names, struct apk_name *name)
{
	int i;

	if (name->providers->num == 0)
		return;

	for (i = 0; i < name->providers->num; i++)
		if (name->providers->item[i].pkg->name == name)
			return;

	for (i = 0; i < (*names)->num; i++)
		if ((*names)->item[i] == name)
			return;

	*apk_name_array_add(names) = name;
}

static void print_pinning_errors(struct apk_database *db, char *label,
				 struct apk_package *pkg, unsigned int tag)
{
	int i;

	if (pkg->ipkg != NULL)
		return;
	if (pkg->repos & apk_db_get_pinning_mask_repos(db, APK_DEFAULT_PINNING_MASK | BIT(tag)))
		return;

	printf("  %s: but needs pinning:", label);
	for (i = 0; i < db->num_repo_tags; i++) {
		if (pkg->repos & db->repo_tags[i].allowed_repos)
			printf(" @" BLOB_FMT, BLOB_PRINTF(*db->repo_tags[i].name));
	}
	printf("\n");
}

static void print_dep_errors(struct apk_database *db, char *label,
			     struct apk_dependency_array *deps,
			     struct apk_name_array **names)
{
	int i, print_label = 1;
	char buf[256];
	apk_blob_t p;
	struct apk_indent indent;

	for (i = 0; i < deps->num; i++) {
		struct apk_dependency *dep = &deps->item[i];
		struct apk_package *pkg;

		pkg = (struct apk_package*) (dep->name->state_int & ~1);
		if (apk_dep_is_materialized_or_provided(dep, pkg))
			continue;

		if (pkg == NULL)
			add_name_if_virtual(names, dep->name);

		if (print_label) {
			print_label = 0;
			indent.x = printf("  %s:", label);
			indent.indent = indent.x + 1;
		}
		p = APK_BLOB_BUF(buf);
		apk_blob_push_dep(&p, db, dep);
		p = apk_blob_pushed(APK_BLOB_BUF(buf), p);
		apk_print_indented(&indent, p);
	}
	if (!print_label)
		printf("\n");
}

static void print_provides_errors(struct apk_database *db, char *label,
				  struct apk_package *pkg)
{
	int i;

	for (i = 0; i < pkg->provides->num; i++) {
		struct apk_name *pn = pkg->provides->item[i].name;
		struct apk_provider p = APK_PROVIDER_FROM_PROVIDES(pkg, &pkg->provides->item[i]);
		struct apk_package *pkgC = (struct apk_package *) (pn->state_int & ~1);

		if (pkgC == NULL && p.version == &apk_null_blob)
			continue;

		if ((pkgC == pkg) && (pn->state_int & 1) == 0) {
			pn->state_int |= 1;
			continue;
		}

		printf("  %s provides " PROVIDER_FMT " conflicting with " PKG_VER_FMT "\n",
			label, PROVIDER_PRINTF(pn, &p), PKG_VER_PRINTF(pkgC));
	}
}

void apk_solver_print_errors(struct apk_database *db,
			     struct apk_changeset *changeset,
			     struct apk_dependency_array *world)
{
	struct apk_name_array *names;
	char pkgtext[256];
	int i, j;

	apk_name_array_init(&names);
	/* FIXME: Print more rational error messages. Group failed
	 * dependencies by package name. As in,
	 * pkg-1.2 selected, but:
	 *   world: pkg>2
	 */
	apk_error("unsatisfiable dependencies:");

	for (i = 0; i < changeset->changes->num; i++) {
		struct apk_package *pkg = changeset->changes->item[i].new_pkg;
		if (pkg == NULL)
			continue;
		pkg->state_int = 1;
		pkg->name->state_ptr = pkg;
		for (j = 0; j < pkg->provides->num; j++) {
			if (pkg->provides->item[j].version == &apk_null_blob)
				continue;
			if (pkg->provides->item[j].name->state_ptr == NULL)
				pkg->provides->item[j].name->state_ptr = pkg;
		}
	}

	print_dep_errors(db, "world", world, &names);
	for (i = 0; i < changeset->changes->num; i++) {
		struct apk_change *change = &changeset->changes->item[i];
		struct apk_package *pkg = change->new_pkg;
		if (pkg == NULL)
			continue;
		snprintf(pkgtext, sizeof(pkgtext), PKG_VER_FMT, PKG_VER_PRINTF(pkg));
		print_pinning_errors(db, pkgtext, pkg, change->new_repository_tag);
		print_dep_errors(db, pkgtext, pkg->depends, &names);
		print_provides_errors(db, pkgtext, pkg);
	}

	for (i = 0; i < names->num; i++) {
		struct apk_indent indent;
		struct apk_name *name = names->item[i];

		printf("\n  %s is a virtual package provided by:\n    ", name->name);
		indent.x = 4;
		indent.indent = 4;

		for (j = 0; j < name->providers->num; j++) {
			struct apk_package *pkg = name->providers->item[j].pkg;
			snprintf(pkgtext, sizeof(pkgtext), PKG_VER_FMT, PKG_VER_PRINTF(pkg));
			apk_print_indented(&indent, APK_BLOB_STR(pkgtext));
		}
		printf("\n");
	}
	apk_name_array_free(&names);
}

int apk_solver_commit(struct apk_database *db,
		      unsigned short solver_flags,
		      struct apk_dependency_array *world)
{
	struct apk_changeset changeset = {};
	int r;

	if (apk_db_check_world(db, world) != 0) {
		apk_error("Not committing changes due to missing repository tags. Use --force to override.");
		return -1;
	}

	r = apk_solver_solve(db, solver_flags, world, &changeset);
	if (r < 0)
		return r;

	if (r == 0 || (apk_flags & APK_FORCE)) {
		/* Success -- or forced installation of bad graph */
		r = apk_solver_commit_changeset(db, &changeset, world);
	} else {
		/* Failure -- print errors */
		apk_solver_print_errors(db, &changeset, world);
	}
	apk_change_array_free(&changeset.changes);

	return r;
}