Send patches - preferably formatted by git format-patch - to patches at archlinux32 dot org.
summaryrefslogtreecommitdiff
path: root/lib/libalpm/sync.c
blob: 41a0b918ee768367c401cd638c88a6ff737a7927 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
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
/*
 *  sync.c
 * 
 *  Copyright (c) 2002-2005 by Judd Vinet <jvinet@zeroflux.org>
 * 
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 
 *  USA.
 */

#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <string.h>
#include <libtar.h>
#include <zlib.h>
/* pacman */
#include "log.h"
#include "util.h"
#include "error.h"
#include "list.h"
#include "package.h"
#include "db.h"
#include "cache.h"
#include "deps.h"
#include "trans.h"
#include "sync.h"
#include "rpmvercmp.h"
#include "handle.h"

extern pmhandle_t *handle;

pmsyncpkg_t *sync_new(int type, pmpkg_t *lpkg, pmpkg_t *spkg)
{
	pmsyncpkg_t *sync;

	if((sync = (pmsyncpkg_t *)malloc(sizeof(pmsyncpkg_t))) == NULL) {
		return(NULL);
	}

	sync->type = type;
	sync->lpkg = lpkg;
	sync->spkg = spkg;
	sync->replaces = NULL;
	
	return(sync);
}

void sync_free(pmsyncpkg_t *sync)
{
	if(sync) {
		FREELISTPTR(sync->replaces);
		free(sync);
	}
}

/* Test for existance of a package in a PMList* of pmsyncpkg_t*
 * If found, return a pointer to the respective pmsyncpkg_t*
 */
static pmsyncpkg_t* find_pkginsync(char *needle, PMList *haystack)
{
	PMList *i;
	pmsyncpkg_t *sync = NULL;
	int found = 0;

	for(i = haystack; i && !found; i = i->next) {
		sync = i->data;
		if(sync && !strcmp(sync->spkg->name, needle)) {
			found = 1;
		}
	}
	if(!found) {
		sync = NULL;
	}

	return(sync);
}

/* It returns a PMList of packages extracted from the given archive
 * (the archive must have been generated by gensync)
 */
PMList *sync_load_archive(char *archive)
{
	PMList *lp = NULL;
	DIR *dir = NULL;
	TAR *tar = NULL;
	tartype_t gztype = {
		(openfunc_t)_alpm_gzopen_frontend,
		(closefunc_t)gzclose,
		(readfunc_t)gzread,
		(writefunc_t)gzwrite
	};

	if(tar_open(&tar, archive, &gztype, O_RDONLY, 0, TAR_GNU) == -1) {
		pm_errno = PM_ERR_NOT_A_FILE;
		goto error;
	}

	/* readdir tmp_dir */
	/* for each subdir, parse %s/desc and %s/depends */

	tar_close(tar);

	return(lp);

error:
	if(tar) {
		tar_close(tar);
	}
	if(dir) {
		closedir(dir);
	}
	return(NULL);
}

int sync_sysupgrade(PMList **data)
{
	PMList *i, *j, *k;
	PMList *targets = NULL;

	*data = NULL;

	/* check for "recommended" package replacements */
	for(i = handle->dbs_sync; i; i = i->next) {
		PMList *j;

		for(j = db_get_pkgcache(i->data); j; j = j->next) {
			pmpkg_t *spkg = j->data;

			for(k = spkg->replaces; k; k = k->next) {
				PMList *m;

				for(m = db_get_pkgcache(handle->db_local); m; m = m->next) {
					pmpkg_t *lpkg = m->data;

					if(!strcmp(k->data, lpkg->name)) {
						if(pm_list_is_strin(lpkg->name, handle->ignorepkg)) {
							_alpm_log(PM_LOG_WARNING, "%s-%s: ignoring package upgrade (to be replaced by %s-%s)",
								lpkg->name, lpkg->version, spkg->name, spkg->version);
						} else {
							pmsyncpkg_t *sync = sync_new(PM_SYNC_TYPE_REPLACE, lpkg, spkg);
							if(sync == NULL) {
								pm_errno = PM_ERR_MEMORY;
								goto error;
							}
							_alpm_log(PM_LOG_DEBUG, "%s-%s elected for upgrade (to be replaced by %s-%s)",
							          lpkg->name, lpkg->version, spkg->name, spkg->version);
							targets = pm_list_add(targets, sync);
						}
					}
				}
			}
		}
	}

	/* match installed packages with the sync dbs and compare versions */
	for(i = db_get_pkgcache(handle->db_local); i; i = i->next) {
		int cmp;
		pmpkg_t *local = i->data;
		pmpkg_t *spkg = NULL;
		pmsyncpkg_t *sync;

		for(j = handle->dbs_sync; !spkg && j; j = j->next) {

			for(k = db_get_pkgcache(j->data); !spkg && k; k = k->next) {
				pmpkg_t *sp = k->data;
				if(!strcmp(local->name, sp->name)) {
					spkg = sp;
				}
			}
		}
		if(spkg == NULL) {
			/*fprintf(stderr, "%s: not found in sync db.  skipping.", local->name);*/
			continue;
		}

		/* compare versions and see if we need to upgrade */
		cmp = rpmvercmp(local->version, spkg->version);
		if(cmp > 0 && !spkg->force) {
			/* local version is newer */
			_alpm_log(PM_LOG_FLOW1, "%s-%s: local version is newer",
				local->name, local->version);
		} else if(cmp == 0) {
			/* versions are identical */
		} else if(pm_list_is_strin(i->data, handle->ignorepkg)) {
			/* package should be ignored (IgnorePkg) */
			_alpm_log(PM_LOG_FLOW1, "%s-%s: ignoring package upgrade (%s)",
				local->name, local->version, spkg->version);
		} else {
			sync = sync_new(PM_SYNC_TYPE_UPGRADE, local, spkg);
			if(sync == NULL) {
				pm_errno = PM_ERR_MEMORY;
				goto error;
			}
			_alpm_log(PM_LOG_DEBUG, "%s-%s elected for upgrade (%s => %s)",
				local->name, local->version, local->version, spkg->version);
			targets = pm_list_add(targets, sync);
		}
	}

	*data = targets;

	return(0);

error:
	FREELIST(targets);
	return(-1);
}

int sync_addtarget(pmdb_t *db, PMList *dbs_sync, pmtrans_t *trans, char *name)
{
	char targline[(PKG_NAME_LEN-1)+1+(DB_TREENAME_LEN-1)+1];
	char *targ;
	PMList *j;
	pmpkg_t *local;
	pmpkg_t *spkg = NULL;
	pmsyncpkg_t *sync;
	int cmp;

	ASSERT(db != NULL, RET_ERR(PM_ERR_DB_NULL, -1));
	ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
	ASSERT(name != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));

	if(trans->flags & PM_TRANS_FLAG_SYSUPG) {
		RET_ERR(PM_ERR_XXX, -1);
	}

	strncpy(targline, name, (PKG_NAME_LEN-1)+1+(DB_TREENAME_LEN-1)+1);
	targ = strchr(targline, '/');
	if(targ) {
		*targ = '\0';
		targ++;
		for(j = dbs_sync; j && !spkg; j = j->next) {
			pmdb_t *dbs = j->data;
			if(strcmp(dbs->treename, targline) == 0) {
				spkg = db_get_pkgfromcache(dbs, targ);
				if(spkg == NULL) {
					RET_ERR(PM_ERR_PKG_NOT_FOUND, -1);
				}
			}
		}
	} else {
		targ = targline;
		for(j = dbs_sync; j && !spkg; j = j->next) {
			pmdb_t *dbs = j->data;
			spkg = db_get_pkgfromcache(dbs, targ);
		}
	}
	if(spkg == NULL) {
		RET_ERR(PM_ERR_PKG_NOT_FOUND, -1);
	}

	local = db_get_pkgfromcache(db, name);
	if(local) {
		cmp = alpm_pkg_vercmp(local->version, spkg->version);
		if(cmp > 0) {
			/* local version is newer - get confirmation first */
			/* ORE
			if(!yesno(":: %s-%s: local version is newer.  Upgrade anyway? [Y/n] ", lpkgname, lpkgver)) {
			}*/
			_alpm_log(PM_LOG_WARNING, "%s-%s: local version is newer -- skipping", local->name, local->version);
			return(0);
		} else if(cmp == 0) {
			/* versions are identical */
			/* ORE
			if(!yesno(":: %s-%s: is up to date.  Upgrade anyway? [Y/n] ", lpkgname, lpkgver)) {
			}*/
			_alpm_log(PM_LOG_WARNING, "%s-%s: is up to date -- skipping", local->name, local->version);
			return(0);
		}
	}

	/* add the package to the transaction */
	if(!find_pkginsync(spkg->name, trans->packages)) {
		sync = sync_new(PM_SYNC_TYPE_UPGRADE, local, spkg);
		if(sync == NULL) {
			RET_ERR(PM_ERR_MEMORY, -1);
		}
		trans->packages = pm_list_add(trans->packages, sync);
	}

	return(0);
}

int sync_prepare(pmdb_t *db, pmtrans_t *trans, PMList **data)
{
	PMList *deps = NULL;
	PMList *list = NULL;
	PMList *trail = NULL;
	PMList *i;

	ASSERT(db != NULL, RET_ERR(PM_ERR_DB_NULL, -1));
	ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
	ASSERT(data != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));

	*data = NULL;

	if(trans->packages == NULL) {
		return(0);
	}

	if(!(trans->flags & PM_TRANS_FLAG_NODEPS)) {
		for(i = trans->packages; i; i = i->next) {
			pmsyncpkg_t *sync = i->data;
			list = pm_list_add(list, sync->spkg);
		}
		trail = pm_list_new();

		/* Resolve targets dependencies */
		TRANS_CB(trans, PM_TRANS_EVT_RESOLVEDEPS_START, NULL, NULL);
		_alpm_log(PM_LOG_FLOW1, "resolving targets dependencies");
		for(i = trans->packages; i; i = i->next) {
			pmsyncpkg_t *sync = i->data;
			pmpkg_t *spkg = sync->spkg;
			_alpm_log(PM_LOG_FLOW1, "resolving dependencies for package %s", spkg->name);
			if(resolvedeps(handle->db_local, handle->dbs_sync, spkg, list, trail) == -1) {
				/* pm_errno is set by resolvedeps */
				goto error;
			}
			/* ORE
			if called from makepkg, reason should be set to REASON_DEPEND
			spkg->reason = PM_PKG_REASON_EXPLICIT;*/
		}
		for(i = list; i; i = i->next) {
			pmpkg_t *spkg = i->data;
			if(!find_pkginsync(spkg->name, trans->packages)) {
				pmsyncpkg_t *sync = sync_new(PM_SYNC_TYPE_DEPEND, NULL, spkg);
				trans->packages = pm_list_add(trans->packages, sync);
			}
		}
		TRANS_CB(trans, PM_TRANS_EVT_RESOLVEDEPS_DONE, NULL, NULL);

		/* ORE
		check for inter-conflicts and whatnot */
		TRANS_CB(trans, PM_TRANS_EVT_INTERCONFLICTS_START, NULL, NULL);
		deps = checkdeps(db, PM_TRANS_TYPE_UPGRADE, list);
		if(deps) {
			int errorout = 0;
			_alpm_log(PM_LOG_FLOW1, "looking for unresolvable dependencies");
			for(i = deps; i; i = i->next) {
				pmdepmissing_t *miss = i->data;
				if(miss->type == PM_DEP_TYPE_DEPEND || miss->type == PM_DEP_TYPE_REQUIRED) {
					if(!errorout) {
						errorout = 1;
					}
					if((miss = (pmdepmissing_t *)malloc(sizeof(pmdepmissing_t))) == NULL) {
						FREELIST(deps);
						FREELIST(*data);
						RET_ERR(PM_ERR_MEMORY, -1);
					}
					*miss = *(pmdepmissing_t *)i->data;
					*data = pm_list_add(*data, miss);
				}
			}
			if(errorout) {
				FREELIST(deps);
				RET_ERR(PM_ERR_UNSATISFIED_DEPS, -1);
			}
			/* ORE
			no unresolvable deps, so look for conflicts */
			_alpm_log(PM_LOG_FLOW1, "looking for conflicts");
		}
		TRANS_CB(trans, PM_TRANS_EVT_INTERCONFLICTS_DONE, NULL, NULL);

		FREELISTPTR(list);
		FREELISTPTR(trail);
	}

	/* ORE
	any packages in rmtargs need to be removed from final.
	rather than ripping out nodes from final, we just copy over
	our "good" nodes to a new list and reassign. */

	/* ORE
	Check dependencies of packages in rmtargs and make sure
	we won't be breaking anything by removing them.
	If a broken dep is detected, make sure it's not from a
	package that's in our final (upgrade) list. */
	_alpm_log(PM_LOG_DEBUG, "checking dependencies of packages designated for removal");

	return(0);

error:
	FREELISTPTR(list);
	FREELISTPTR(trail);
	FREELIST(deps);
	return(-1);
}

int sync_commit(pmdb_t *db, pmtrans_t *trans)
{
	PMList *i, *j = NULL;
	PMList *data;
	pmtrans_t *tr;
	char ldir[PATH_MAX];

	ASSERT(db != NULL, RET_ERR(PM_ERR_DB_NULL, -1));
	ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));

	/* ORE
	set CACHEDIR as a library option? */
#define PM_CACHEDIR "var/cache/pacman/pkg"
	snprintf(ldir, PATH_MAX, "%s" PM_CACHEDIR, handle->root);
#undef CACHEDIR

	/* remove any conflicting packages (WITHOUT dep checks) */
	/* ORE - alpm does not handle removal of conflicting pkgs for now */

	/* remove to-be-replaced packages */
	tr = trans_new(PM_TRANS_TYPE_REMOVE, PM_TRANS_FLAG_NODEPS);
	/* ORE */
	if(tr == NULL) {
		goto error;
	}
	for(i = trans->packages; i; i = i->next) {
		pmsyncpkg_t *sync = i->data;
		for(j = sync->replaces; j; j = j->next) {
			pmpkg_t *pkg = j->data;
			if(trans_addtarget(tr, pkg->name)) {
				goto error;
			}
		}
	}
	trans_free(tr);

	/* install targets */
	/* ORE - need for a flag specifying that deps have already been checked */
	tr = trans_new(PM_TRANS_TYPE_UPGRADE, PM_TRANS_FLAG_NODEPS);
	if(tr == NULL) {
		goto error;
	}
	for(i = trans->packages; i; i = i->next) {
		pmsyncpkg_t *sync = i->data;
		pmpkg_t *spkg = sync->spkg;
		char str[PATH_MAX];
		snprintf(str, PATH_MAX, "%s/%s-%s" PM_EXT_PKG, ldir, spkg->name, spkg->version);
		if(trans_addtarget(tr, str) == -1) {
			goto error;
		}
	}
	if(trans_prepare(tr, &data) == -1) {
		goto error;
	}
	if(trans_commit(tr) == -1) {
		goto error;
	}
	trans_free(tr);

	/* propagate replaced packages' requiredby fields to their new owners */
	for(i = trans->packages; i; i = i->next) {
		/*syncpkg_t *sync = (syncpkg_t*)i->data;
		if(sync->replaces) {
			pkginfo_t *new = db_scan(db, sync->pkg->name, INFRQ_DEPENDS);
			for(j = sync->replaces; j; j = j->next) {
				pkginfo_t *old = (pkginfo_t*)j->data;
				// merge lists
				for(k = old->requiredby; k; k = k->next) {
					if(!is_in(k->data, new->requiredby)) {
						// replace old's name with new's name in the requiredby's dependency list
						PMList *m;
						pkginfo_t *depender = db_scan(db, k->data, INFRQ_DEPENDS);
						for(m = depender->depends; m; m = m->next) {
							if(!strcmp(m->data, old->name)) {
								FREE(m->data);
								m->data = strdup(new->name);
							}
						}
						db_write(db, depender, INFRQ_DEPENDS);

						// add the new requiredby
						new->requiredby = list_add(new->requiredby, strdup(k->data));
					}
				}
			}
			db_write(db, new, INFRQ_DEPENDS);
			FREEPKG(new);
		}*/
	}

	/* cache needs to be rebuilt */
	db_free_pkgcache(db);

	return(0);

error:
	return(-1);
}

/* vim: set ts=2 sw=2 noet: */