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7939f6d1 RC |
1 | /* |
2 | * Copyright (c) 2001, Robert Collins. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * A copy of the GNU General Public License can be found at | |
10 | * http://www.gnu.org/ | |
11 | * | |
12 | * Written by Robert Collins <rbtcollins@hotmail.com> | |
13 | * | |
14 | */ | |
15 | ||
16 | /* this is the parent class for all package operations. | |
17 | */ | |
18 | ||
19 | #if 0 | |
20 | static const char *cvsid = | |
21 | "\n%%% $Id$\n"; | |
22 | #endif | |
bb849dbd RC |
23 | |
24 | #include "package_version.h" | |
3c196821 RC |
25 | #include "package_db.h" |
26 | #include "package_meta.h" | |
27 | #include "state.h" | |
28 | #include "resource.h" | |
4f591f9d | 29 | #include <algorithm> |
3c196821 | 30 | |
666bf37d RC |
31 | using namespace std; |
32 | ||
3c196821 RC |
33 | /* a default class to avoid special casing empty packageversions */ |
34 | ||
35 | /* TODO place into the class header */ | |
36 | class _defaultversion : public _packageversion | |
bb849dbd | 37 | { |
3c196821 RC |
38 | public: |
39 | _defaultversion() | |
40 | { | |
41 | // never try to free me! | |
42 | ++references; | |
43 | } | |
44 | String const Name(){return String();} | |
45 | String const Vendor_version() {return String();} | |
46 | String const Package_version() {return String();} | |
47 | String const Canonical_version() {return String();} | |
48 | void setCanonicalVersion (String const &) {} | |
49 | package_status_t Status (){return package_notinstalled;} | |
50 | package_type_t Type () {return package_binary;} | |
51 | String const getfirstfile () {return String();} | |
52 | String const getnextfile () {return String();} | |
53 | String const SDesc () {return String();} | |
54 | void set_sdesc (String const &) {} | |
55 | String const LDesc () {return String();} | |
56 | void set_ldesc (String const &) {} | |
57 | void uninstall (){} | |
bb849dbd | 58 | }; |
3c196821 RC |
59 | static _defaultversion defaultversion; |
60 | ||
61 | /* the wrapper class */ | |
62 | packageversion::packageversion() : data (&defaultversion) | |
63 | { | |
64 | ++data->references; | |
65 | } | |
66 | ||
67 | /* Create from an actual package */ | |
68 | packageversion::packageversion (_packageversion *pkg) | |
69 | { | |
70 | if (pkg) | |
71 | data = pkg; | |
72 | else | |
73 | data = &defaultversion; | |
74 | ++data->references; | |
75 | } | |
76 | ||
77 | packageversion::packageversion (packageversion const &existing) : | |
78 | data(existing.data) | |
79 | { | |
80 | ++data->references; | |
81 | } | |
82 | ||
83 | packageversion::~packageversion() | |
84 | { | |
85 | if (--data->references == 0) | |
86 | delete data; | |
87 | } | |
88 | ||
89 | packageversion & | |
90 | packageversion::operator= (packageversion const &rhs) | |
91 | { | |
92 | ++rhs.data->references; | |
93 | if (--data->references == 0) | |
94 | delete data; | |
95 | data = rhs.data; | |
96 | return *this; | |
97 | } | |
98 | ||
99 | bool | |
100 | packageversion::operator ! () const | |
101 | { | |
102 | return !data->Name().size(); | |
103 | } | |
104 | ||
105 | packageversion::operator bool () const | |
106 | { | |
107 | return data->Name().size(); | |
108 | } | |
109 | ||
110 | bool | |
111 | packageversion::operator == (packageversion const &rhs) const | |
112 | { | |
113 | if (this == &rhs || data == rhs.data) | |
114 | return true; | |
115 | else | |
116 | return data->Name () == rhs.data->Name() && data->Canonical_version () == rhs.data->Canonical_version(); | |
117 | } | |
118 | ||
119 | bool | |
120 | packageversion::operator != (packageversion const &rhs) const | |
121 | { | |
122 | return ! (*this == rhs); | |
123 | } | |
124 | ||
125 | bool | |
126 | packageversion::operator < (packageversion const &rhs) const | |
127 | { | |
128 | int t = data->Name ().casecompare (rhs.data->Name()); | |
129 | if (t < 0) | |
130 | return true; | |
131 | else if (t > 0) | |
132 | return false; | |
133 | else if (data->Canonical_version().casecompare (rhs.data->Canonical_version()) < 0) | |
134 | return true; | |
135 | return false; | |
136 | } | |
137 | ||
138 | String const | |
139 | packageversion::Name () const | |
140 | { | |
141 | return data->Name (); | |
142 | } | |
143 | ||
144 | String const | |
145 | packageversion::Canonical_version() const | |
146 | { | |
147 | return data->Canonical_version(); | |
148 | } | |
149 | ||
150 | void | |
151 | packageversion::setCanonicalVersion (String const &ver) | |
152 | { | |
153 | data->setCanonicalVersion (ver); | |
154 | } | |
155 | ||
156 | String const | |
157 | packageversion::getfirstfile () | |
158 | { | |
159 | return data->getfirstfile (); | |
160 | } | |
161 | ||
162 | String const | |
163 | packageversion::getnextfile () | |
164 | { | |
165 | return data->getnextfile (); | |
166 | } | |
167 | ||
168 | String const | |
169 | packageversion::SDesc () const | |
170 | { | |
171 | return data->SDesc (); | |
172 | } | |
173 | ||
174 | void | |
175 | packageversion::set_sdesc (String const &sdesc) | |
176 | { | |
177 | data->set_sdesc (sdesc); | |
178 | } | |
179 | ||
180 | String const | |
181 | packageversion::LDesc () const | |
182 | { | |
183 | return data->LDesc (); | |
184 | } | |
185 | ||
186 | void | |
187 | packageversion::set_ldesc (String const &ldesc) | |
188 | { | |
189 | data->set_ldesc (ldesc); | |
190 | } | |
191 | ||
192 | packageversion | |
193 | packageversion::sourcePackage() | |
194 | { | |
195 | return data->sourcePackage(); | |
196 | } | |
aa1e3b4d RC |
197 | |
198 | PackageSpecification & | |
3c196821 RC |
199 | packageversion::sourcePackageSpecification () |
200 | { | |
201 | return data->sourcePackageSpecification (); | |
202 | } | |
203 | ||
204 | void | |
205 | packageversion::setSourcePackageSpecification (PackageSpecification const &spec) | |
206 | { | |
207 | data->setSourcePackageSpecification(spec); | |
208 | } | |
209 | ||
210 | vector <vector <PackageSpecification *> *> * | |
211 | packageversion::depends() | |
212 | { | |
213 | return &data->depends; | |
214 | } | |
215 | ||
216 | vector <vector <PackageSpecification *> *> * | |
217 | packageversion::predepends() | |
218 | { | |
219 | return &data->predepends; | |
220 | } | |
221 | ||
222 | vector <vector <PackageSpecification *> *> * | |
223 | packageversion::recommends() | |
224 | { | |
225 | return &data->recommends; | |
226 | } | |
227 | ||
228 | vector <vector <PackageSpecification *> *> * | |
229 | packageversion::suggests() | |
230 | { | |
231 | return &data->suggests; | |
232 | } | |
233 | ||
234 | vector <vector <PackageSpecification *> *> * | |
235 | packageversion::replaces() | |
236 | { | |
237 | return &data->replaces; | |
238 | } | |
239 | ||
240 | vector <vector <PackageSpecification *> *> * | |
241 | packageversion::conflicts() | |
242 | { | |
243 | return &data->conflicts; | |
244 | } | |
245 | ||
246 | vector <vector <PackageSpecification *> *> * | |
247 | packageversion::provides() | |
248 | { | |
249 | return &data->provides; | |
250 | } | |
251 | ||
b1ff53ed RC |
252 | vector <vector <PackageSpecification *> *> * |
253 | packageversion::binaries() | |
254 | { | |
255 | return &data->binaries; | |
256 | } | |
3c196821 RC |
257 | |
258 | bool | |
259 | packageversion::picked () const | |
260 | { | |
261 | return data->picked; | |
262 | } | |
263 | ||
264 | void | |
265 | packageversion::pick (bool aBool) | |
266 | { | |
267 | data->picked = aBool; | |
268 | } | |
269 | ||
270 | bool | |
271 | packageversion::changeRequested () const | |
272 | { | |
273 | return data->changeRequested (); | |
274 | } | |
275 | ||
276 | void | |
277 | packageversion::uninstall () | |
278 | { | |
279 | data->uninstall (); | |
280 | } | |
281 | ||
282 | packagesource * | |
283 | packageversion::source () | |
284 | { | |
e5662e0a RC |
285 | if (!data->sources.size()) |
286 | data->sources.push_back (packagesource()); | |
287 | return &data->sources[0]; | |
3c196821 RC |
288 | } |
289 | ||
ec13f13c RC |
290 | vector<packagesource> * |
291 | packageversion::sources () | |
292 | { | |
293 | return &data->sources; | |
294 | } | |
295 | ||
3c196821 RC |
296 | bool |
297 | packageversion::accessible() const | |
298 | { | |
299 | return data->accessible(); | |
300 | } | |
301 | ||
4f591f9d RC |
302 | static bool |
303 | checkForInstalled (PackageSpecification *spec) | |
304 | { | |
305 | packagedb db; | |
306 | packagemeta *required = db.findBinary (*spec); | |
307 | if (!required) | |
308 | return false; | |
309 | if (spec->satisfies (required->installed) | |
310 | && required->desired == required->installed ) | |
311 | /* done, found a satisfactory installed version that will remain | |
312 | installed */ | |
313 | return true; | |
314 | return false; | |
315 | } | |
316 | ||
317 | static bool | |
318 | checkForUpgradeable (PackageSpecification *spec) | |
319 | { | |
320 | packagedb db; | |
321 | packagemeta *required = db.findBinary (*spec); | |
322 | if (!required || !required->installed) | |
323 | return false; | |
324 | for (set <packageversion>::iterator i = required->versions.begin(); | |
325 | i != required->versions.end(); ++i) | |
326 | if (spec->satisfies (*i)) | |
327 | return true; | |
328 | return false; | |
329 | } | |
330 | ||
331 | static bool | |
332 | checkForSatisfiable (PackageSpecification *spec) | |
333 | { | |
334 | packagedb db; | |
335 | packagemeta *required = db.findBinary (*spec); | |
336 | if (!required) | |
337 | return false; | |
338 | for (set <packageversion>::iterator i = required->versions.begin(); | |
339 | i != required->versions.end(); ++i) | |
340 | if (spec->satisfies (*i)) | |
341 | return true; | |
342 | return false; | |
343 | } | |
344 | ||
05c5b8a6 RC |
345 | /* Convenience class for now */ |
346 | class DependencyProcessor { | |
347 | public: | |
348 | DependencyProcessor (trusts const &aTrust, int aDepth=0) : deftrust (aTrust), depth (aDepth) {} | |
349 | trusts const deftrust; | |
350 | size_t depth; | |
351 | }; | |
352 | ||
353 | static int | |
354 | select (DependencyProcessor &processor, packagemeta *required, packageversion const &aVersion) | |
355 | { | |
356 | /* preserve source */ | |
357 | bool sourceticked = required->desired.sourcePackage().picked(); | |
358 | /* install this version */ | |
359 | required->desired = aVersion; | |
360 | required->desired.pick (required->installed != required->desired); | |
361 | required->desired.sourcePackage().pick (sourceticked); | |
362 | /* does this requirement have requirements? */ | |
363 | return required->set_requirements (processor.deftrust, processor.depth + 1); | |
364 | } | |
365 | ||
4f591f9d RC |
366 | static int |
367 | processOneDependency(trusts deftrust, size_t depth, PackageSpecification *spec) | |
368 | { | |
369 | /* TODO: add this to a set of packages to be offered to meet the | |
370 | requirement. For now, simply set the install to the first | |
371 | satisfactory version. The user can step through the list if | |
372 | desired */ | |
373 | packagedb db; | |
374 | packagemeta *required = db.findBinary (*spec); | |
05c5b8a6 RC |
375 | DependencyProcessor processor (deftrust, depth); |
376 | ||
377 | packageversion trusted = required->trustp(deftrust); | |
378 | if (spec->satisfies (trusted)) | |
379 | select (processor,required,trusted); | |
380 | ||
4f591f9d RC |
381 | set <packageversion>::iterator v; |
382 | for (v = required->versions.begin(); | |
383 | v != required->versions.end() && !spec->satisfies (*v); ++v); | |
05c5b8a6 RC |
384 | |
385 | if (v == required->versions.end()) | |
386 | /* assert ?! */ | |
387 | return 0; | |
388 | ||
389 | return select (processor, required, *v); | |
4f591f9d RC |
390 | } |
391 | ||
392 | int | |
666bf37d | 393 | packageversion::set_requirements (trusts deftrust, size_t depth) |
4f591f9d RC |
394 | { |
395 | int changed = 0; | |
396 | vector <vector <PackageSpecification *> *>::iterator dp = depends ()->begin(); | |
397 | /* cheap test for too much recursion */ | |
398 | if (depth > 5) | |
399 | return changed; | |
400 | /* walk through each and clause */ | |
401 | while (dp != depends ()->end()) | |
402 | { | |
403 | /* three step: | |
404 | 1) is a satisfactory or clause installed? | |
405 | 2) is an unsatisfactory version of an or clause which has | |
406 | a satisfactory version available installed? | |
407 | 3) is a satisfactory package available? | |
408 | */ | |
409 | /* check each or clause for an installed match */ | |
410 | vector <PackageSpecification *>::iterator i = | |
411 | find_if ((*dp)->begin(), (*dp)->end(), checkForInstalled); | |
412 | if (i != (*dp)->end()) | |
413 | { | |
414 | /* we found an installed ok package */ | |
415 | /* next and clause */ | |
416 | ++dp; | |
417 | continue; | |
418 | } | |
419 | /* check each or clause for an upgradeable version */ | |
420 | i = find_if ((*dp)->begin(), (*dp)->end(), checkForUpgradeable); | |
421 | if (i != (*dp)->end()) | |
422 | { | |
423 | /* we found a package that can be up/downgraded to meet the | |
424 | requirement. (*i is the packagespec that can be satisfied.) | |
425 | */ | |
426 | ++dp; | |
427 | changed += processOneDependency (deftrust, depth, *i) + 1; | |
428 | continue; | |
429 | } | |
430 | /* check each or clause for an installable version */ | |
431 | i = find_if ((*dp)->begin(), (*dp)->end(), checkForSatisfiable); | |
432 | if (i != (*dp)->end()) | |
433 | { | |
434 | /* we found a package that can be installed to meet the requirement */ | |
435 | ++dp; | |
436 | changed += processOneDependency (deftrust, depth, *i) + 1; | |
437 | continue; | |
438 | } | |
439 | ++dp; | |
440 | } | |
441 | return changed; | |
442 | } | |
443 | ||
3c196821 RC |
444 | /* the parent data class */ |
445 | ||
446 | _packageversion::_packageversion ():picked (false), references (0) | |
447 | { | |
448 | } | |
449 | ||
450 | _packageversion::~_packageversion () | |
451 | { | |
452 | } | |
453 | ||
454 | PackageSpecification & | |
455 | _packageversion::sourcePackageSpecification () | |
aa1e3b4d RC |
456 | { |
457 | return _sourcePackage; | |
458 | } | |
459 | ||
460 | void | |
3c196821 | 461 | _packageversion::setSourcePackageSpecification (PackageSpecification const &spec) |
aa1e3b4d RC |
462 | { |
463 | _sourcePackage = spec; | |
464 | } | |
3c196821 RC |
465 | |
466 | packageversion | |
467 | _packageversion::sourcePackage () | |
468 | { | |
469 | if (!sourceVersion) | |
470 | { | |
471 | packagedb db; | |
472 | packagemeta * pkg; | |
473 | pkg = db.findSource (_sourcePackage); | |
474 | /* no valid source meta available, just return the default | |
475 | (blank) package version | |
476 | */ | |
477 | if (!pkg) | |
478 | return sourceVersion; | |
479 | set<packageversion>::iterator i=pkg->versions.begin(); | |
480 | while (i != pkg->versions.end()) | |
481 | { | |
482 | packageversion const & ver = * i; | |
483 | if (_sourcePackage.satisfies (ver)) | |
484 | sourceVersion = ver; | |
485 | ++i; | |
486 | } | |
487 | } | |
488 | return sourceVersion; | |
489 | } | |
490 | ||
491 | bool | |
492 | _packageversion::accessible() const | |
493 | { | |
e5662e0a RC |
494 | bool cached = true; |
495 | for (vector<packagesource>::const_iterator i = sources.begin(); | |
496 | i!=sources.end(); ++i) | |
497 | if (!i->Cached ()) | |
498 | cached = false; | |
499 | if (cached) | |
500 | return true; | |
501 | if (::source == IDC_SOURCE_CWD) | |
502 | return false; | |
503 | unsigned int retrievable = 0; | |
504 | for (vector<packagesource>::const_iterator i = sources.begin(); | |
505 | i!=sources.end(); ++i) | |
506 | if (i->sites.size() || i->Cached ()) | |
507 | retrievable += 1; | |
508 | return retrievable == sources.size(); | |
3c196821 RC |
509 | } |
510 | ||
511 | bool | |
512 | _packageversion::changeRequested () | |
513 | { | |
514 | return (picked || sourcePackage().picked()); | |
515 | } |