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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" | |
bd4e91a7 | 27 | #include "LogSingleton.h" |
3c196821 RC |
28 | #include "state.h" |
29 | #include "resource.h" | |
4f591f9d | 30 | #include <algorithm> |
3c196821 | 31 | |
666bf37d RC |
32 | using namespace std; |
33 | ||
3c196821 RC |
34 | /* a default class to avoid special casing empty packageversions */ |
35 | ||
36 | /* TODO place into the class header */ | |
37 | class _defaultversion : public _packageversion | |
bb849dbd | 38 | { |
3c196821 RC |
39 | public: |
40 | _defaultversion() | |
41 | { | |
42 | // never try to free me! | |
43 | ++references; | |
44 | } | |
45 | String const Name(){return String();} | |
46 | String const Vendor_version() {return String();} | |
47 | String const Package_version() {return String();} | |
48 | String const Canonical_version() {return String();} | |
49 | void setCanonicalVersion (String const &) {} | |
50 | package_status_t Status (){return package_notinstalled;} | |
51 | package_type_t Type () {return package_binary;} | |
52 | String const getfirstfile () {return String();} | |
53 | String const getnextfile () {return String();} | |
54 | String const SDesc () {return String();} | |
55 | void set_sdesc (String const &) {} | |
56 | String const LDesc () {return String();} | |
57 | void set_ldesc (String const &) {} | |
58 | void uninstall (){} | |
6e754226 | 59 | void pick(bool const &newValue){/* Ignore attempts to pick this!. Throw an exception here if you want to detect such attemtps instead */} |
ad646f43 RC |
60 | virtual void addScript(Script const &) {} |
61 | virtual std::vector <Script> &scripts() { scripts_.clear(); return scripts_;} | |
62 | private: | |
63 | std::vector <Script> scripts_; | |
bb849dbd | 64 | }; |
3c196821 RC |
65 | static _defaultversion defaultversion; |
66 | ||
67 | /* the wrapper class */ | |
68 | packageversion::packageversion() : data (&defaultversion) | |
69 | { | |
70 | ++data->references; | |
71 | } | |
72 | ||
73 | /* Create from an actual package */ | |
74 | packageversion::packageversion (_packageversion *pkg) | |
75 | { | |
76 | if (pkg) | |
77 | data = pkg; | |
78 | else | |
79 | data = &defaultversion; | |
80 | ++data->references; | |
81 | } | |
82 | ||
83 | packageversion::packageversion (packageversion const &existing) : | |
84 | data(existing.data) | |
85 | { | |
86 | ++data->references; | |
87 | } | |
88 | ||
89 | packageversion::~packageversion() | |
90 | { | |
91 | if (--data->references == 0) | |
92 | delete data; | |
93 | } | |
94 | ||
95 | packageversion & | |
96 | packageversion::operator= (packageversion const &rhs) | |
97 | { | |
98 | ++rhs.data->references; | |
99 | if (--data->references == 0) | |
100 | delete data; | |
101 | data = rhs.data; | |
102 | return *this; | |
103 | } | |
104 | ||
105 | bool | |
106 | packageversion::operator ! () const | |
107 | { | |
108 | return !data->Name().size(); | |
109 | } | |
110 | ||
111 | packageversion::operator bool () const | |
112 | { | |
113 | return data->Name().size(); | |
114 | } | |
115 | ||
116 | bool | |
117 | packageversion::operator == (packageversion const &rhs) const | |
118 | { | |
119 | if (this == &rhs || data == rhs.data) | |
120 | return true; | |
121 | else | |
122 | return data->Name () == rhs.data->Name() && data->Canonical_version () == rhs.data->Canonical_version(); | |
123 | } | |
124 | ||
125 | bool | |
126 | packageversion::operator != (packageversion const &rhs) const | |
127 | { | |
128 | return ! (*this == rhs); | |
129 | } | |
130 | ||
131 | bool | |
132 | packageversion::operator < (packageversion const &rhs) const | |
133 | { | |
134 | int t = data->Name ().casecompare (rhs.data->Name()); | |
135 | if (t < 0) | |
136 | return true; | |
137 | else if (t > 0) | |
138 | return false; | |
139 | else if (data->Canonical_version().casecompare (rhs.data->Canonical_version()) < 0) | |
140 | return true; | |
141 | return false; | |
142 | } | |
143 | ||
144 | String const | |
145 | packageversion::Name () const | |
146 | { | |
147 | return data->Name (); | |
148 | } | |
149 | ||
150 | String const | |
151 | packageversion::Canonical_version() const | |
152 | { | |
153 | return data->Canonical_version(); | |
154 | } | |
155 | ||
156 | void | |
157 | packageversion::setCanonicalVersion (String const &ver) | |
158 | { | |
159 | data->setCanonicalVersion (ver); | |
160 | } | |
161 | ||
162 | String const | |
163 | packageversion::getfirstfile () | |
164 | { | |
165 | return data->getfirstfile (); | |
166 | } | |
167 | ||
168 | String const | |
169 | packageversion::getnextfile () | |
170 | { | |
171 | return data->getnextfile (); | |
172 | } | |
173 | ||
174 | String const | |
175 | packageversion::SDesc () const | |
176 | { | |
177 | return data->SDesc (); | |
178 | } | |
179 | ||
180 | void | |
181 | packageversion::set_sdesc (String const &sdesc) | |
182 | { | |
183 | data->set_sdesc (sdesc); | |
184 | } | |
185 | ||
186 | String const | |
187 | packageversion::LDesc () const | |
188 | { | |
189 | return data->LDesc (); | |
190 | } | |
191 | ||
192 | void | |
193 | packageversion::set_ldesc (String const &ldesc) | |
194 | { | |
195 | data->set_ldesc (ldesc); | |
196 | } | |
197 | ||
198 | packageversion | |
199 | packageversion::sourcePackage() | |
200 | { | |
201 | return data->sourcePackage(); | |
202 | } | |
aa1e3b4d RC |
203 | |
204 | PackageSpecification & | |
3c196821 RC |
205 | packageversion::sourcePackageSpecification () |
206 | { | |
207 | return data->sourcePackageSpecification (); | |
208 | } | |
209 | ||
210 | void | |
211 | packageversion::setSourcePackageSpecification (PackageSpecification const &spec) | |
212 | { | |
213 | data->setSourcePackageSpecification(spec); | |
214 | } | |
215 | ||
216 | vector <vector <PackageSpecification *> *> * | |
217 | packageversion::depends() | |
218 | { | |
219 | return &data->depends; | |
220 | } | |
221 | ||
222 | vector <vector <PackageSpecification *> *> * | |
223 | packageversion::predepends() | |
224 | { | |
225 | return &data->predepends; | |
226 | } | |
227 | ||
228 | vector <vector <PackageSpecification *> *> * | |
229 | packageversion::recommends() | |
230 | { | |
231 | return &data->recommends; | |
232 | } | |
233 | ||
234 | vector <vector <PackageSpecification *> *> * | |
235 | packageversion::suggests() | |
236 | { | |
237 | return &data->suggests; | |
238 | } | |
239 | ||
240 | vector <vector <PackageSpecification *> *> * | |
241 | packageversion::replaces() | |
242 | { | |
243 | return &data->replaces; | |
244 | } | |
245 | ||
246 | vector <vector <PackageSpecification *> *> * | |
247 | packageversion::conflicts() | |
248 | { | |
249 | return &data->conflicts; | |
250 | } | |
251 | ||
252 | vector <vector <PackageSpecification *> *> * | |
253 | packageversion::provides() | |
254 | { | |
255 | return &data->provides; | |
256 | } | |
257 | ||
b1ff53ed RC |
258 | vector <vector <PackageSpecification *> *> * |
259 | packageversion::binaries() | |
260 | { | |
261 | return &data->binaries; | |
262 | } | |
3c196821 RC |
263 | |
264 | bool | |
265 | packageversion::picked () const | |
266 | { | |
267 | return data->picked; | |
268 | } | |
269 | ||
270 | void | |
271 | packageversion::pick (bool aBool) | |
272 | { | |
6e754226 | 273 | data->pick(aBool); |
3c196821 RC |
274 | } |
275 | ||
276 | bool | |
277 | packageversion::changeRequested () const | |
278 | { | |
279 | return data->changeRequested (); | |
280 | } | |
281 | ||
282 | void | |
283 | packageversion::uninstall () | |
284 | { | |
285 | data->uninstall (); | |
286 | } | |
287 | ||
288 | packagesource * | |
289 | packageversion::source () | |
290 | { | |
e5662e0a RC |
291 | if (!data->sources.size()) |
292 | data->sources.push_back (packagesource()); | |
293 | return &data->sources[0]; | |
3c196821 RC |
294 | } |
295 | ||
ec13f13c RC |
296 | vector<packagesource> * |
297 | packageversion::sources () | |
298 | { | |
299 | return &data->sources; | |
300 | } | |
301 | ||
3c196821 RC |
302 | bool |
303 | packageversion::accessible() const | |
304 | { | |
305 | return data->accessible(); | |
306 | } | |
307 | ||
4f591f9d RC |
308 | static bool |
309 | checkForInstalled (PackageSpecification *spec) | |
310 | { | |
311 | packagedb db; | |
312 | packagemeta *required = db.findBinary (*spec); | |
313 | if (!required) | |
314 | return false; | |
315 | if (spec->satisfies (required->installed) | |
316 | && required->desired == required->installed ) | |
317 | /* done, found a satisfactory installed version that will remain | |
318 | installed */ | |
319 | return true; | |
320 | return false; | |
321 | } | |
322 | ||
323 | static bool | |
324 | checkForUpgradeable (PackageSpecification *spec) | |
325 | { | |
326 | packagedb db; | |
327 | packagemeta *required = db.findBinary (*spec); | |
328 | if (!required || !required->installed) | |
329 | return false; | |
330 | for (set <packageversion>::iterator i = required->versions.begin(); | |
331 | i != required->versions.end(); ++i) | |
332 | if (spec->satisfies (*i)) | |
333 | return true; | |
334 | return false; | |
335 | } | |
336 | ||
337 | static bool | |
338 | checkForSatisfiable (PackageSpecification *spec) | |
339 | { | |
340 | packagedb db; | |
341 | packagemeta *required = db.findBinary (*spec); | |
342 | if (!required) | |
343 | return false; | |
344 | for (set <packageversion>::iterator i = required->versions.begin(); | |
345 | i != required->versions.end(); ++i) | |
346 | if (spec->satisfies (*i)) | |
347 | return true; | |
348 | return false; | |
349 | } | |
350 | ||
05c5b8a6 RC |
351 | /* Convenience class for now */ |
352 | class DependencyProcessor { | |
353 | public: | |
354 | DependencyProcessor (trusts const &aTrust, int aDepth=0) : deftrust (aTrust), depth (aDepth) {} | |
355 | trusts const deftrust; | |
356 | size_t depth; | |
357 | }; | |
358 | ||
359 | static int | |
360 | select (DependencyProcessor &processor, packagemeta *required, packageversion const &aVersion) | |
361 | { | |
362 | /* preserve source */ | |
363 | bool sourceticked = required->desired.sourcePackage().picked(); | |
364 | /* install this version */ | |
365 | required->desired = aVersion; | |
366 | required->desired.pick (required->installed != required->desired); | |
367 | required->desired.sourcePackage().pick (sourceticked); | |
368 | /* does this requirement have requirements? */ | |
369 | return required->set_requirements (processor.deftrust, processor.depth + 1); | |
370 | } | |
371 | ||
4f591f9d RC |
372 | static int |
373 | processOneDependency(trusts deftrust, size_t depth, PackageSpecification *spec) | |
374 | { | |
375 | /* TODO: add this to a set of packages to be offered to meet the | |
376 | requirement. For now, simply set the install to the first | |
377 | satisfactory version. The user can step through the list if | |
378 | desired */ | |
379 | packagedb db; | |
380 | packagemeta *required = db.findBinary (*spec); | |
05c5b8a6 RC |
381 | DependencyProcessor processor (deftrust, depth); |
382 | ||
383 | packageversion trusted = required->trustp(deftrust); | |
bd4e91a7 RC |
384 | if (spec->satisfies (trusted)) { |
385 | return select (processor,required,trusted); | |
386 | } | |
387 | ||
388 | log (LOG_TIMESTAMP) << "Warning, the default trust level for package " | |
c4e25cde MB |
389 | << trusted.Name() << " does not meet this specification " << *spec |
390 | << endLog; | |
05c5b8a6 | 391 | |
4f591f9d RC |
392 | set <packageversion>::iterator v; |
393 | for (v = required->versions.begin(); | |
394 | v != required->versions.end() && !spec->satisfies (*v); ++v); | |
05c5b8a6 RC |
395 | |
396 | if (v == required->versions.end()) | |
397 | /* assert ?! */ | |
398 | return 0; | |
399 | ||
400 | return select (processor, required, *v); | |
4f591f9d RC |
401 | } |
402 | ||
403 | int | |
666bf37d | 404 | packageversion::set_requirements (trusts deftrust, size_t depth) |
4f591f9d RC |
405 | { |
406 | int changed = 0; | |
407 | vector <vector <PackageSpecification *> *>::iterator dp = depends ()->begin(); | |
408 | /* cheap test for too much recursion */ | |
409 | if (depth > 5) | |
410 | return changed; | |
411 | /* walk through each and clause */ | |
412 | while (dp != depends ()->end()) | |
413 | { | |
414 | /* three step: | |
415 | 1) is a satisfactory or clause installed? | |
416 | 2) is an unsatisfactory version of an or clause which has | |
417 | a satisfactory version available installed? | |
418 | 3) is a satisfactory package available? | |
419 | */ | |
420 | /* check each or clause for an installed match */ | |
421 | vector <PackageSpecification *>::iterator i = | |
422 | find_if ((*dp)->begin(), (*dp)->end(), checkForInstalled); | |
423 | if (i != (*dp)->end()) | |
424 | { | |
425 | /* we found an installed ok package */ | |
426 | /* next and clause */ | |
427 | ++dp; | |
428 | continue; | |
429 | } | |
430 | /* check each or clause for an upgradeable version */ | |
431 | i = find_if ((*dp)->begin(), (*dp)->end(), checkForUpgradeable); | |
432 | if (i != (*dp)->end()) | |
433 | { | |
434 | /* we found a package that can be up/downgraded to meet the | |
435 | requirement. (*i is the packagespec that can be satisfied.) | |
436 | */ | |
437 | ++dp; | |
438 | changed += processOneDependency (deftrust, depth, *i) + 1; | |
439 | continue; | |
440 | } | |
441 | /* check each or clause for an installable version */ | |
442 | i = find_if ((*dp)->begin(), (*dp)->end(), checkForSatisfiable); | |
443 | if (i != (*dp)->end()) | |
444 | { | |
445 | /* we found a package that can be installed to meet the requirement */ | |
446 | ++dp; | |
447 | changed += processOneDependency (deftrust, depth, *i) + 1; | |
448 | continue; | |
449 | } | |
450 | ++dp; | |
451 | } | |
452 | return changed; | |
453 | } | |
454 | ||
ad646f43 RC |
455 | void |
456 | packageversion::addScript(Script const &aScript) | |
457 | { | |
458 | return data->addScript (aScript); | |
459 | } | |
460 | ||
461 | std::vector <Script> & | |
462 | packageversion::scripts() | |
463 | { | |
464 | return data->scripts(); | |
465 | } | |
466 | ||
3c196821 RC |
467 | /* the parent data class */ |
468 | ||
469 | _packageversion::_packageversion ():picked (false), references (0) | |
470 | { | |
471 | } | |
472 | ||
473 | _packageversion::~_packageversion () | |
474 | { | |
475 | } | |
476 | ||
477 | PackageSpecification & | |
478 | _packageversion::sourcePackageSpecification () | |
aa1e3b4d RC |
479 | { |
480 | return _sourcePackage; | |
481 | } | |
482 | ||
483 | void | |
3c196821 | 484 | _packageversion::setSourcePackageSpecification (PackageSpecification const &spec) |
aa1e3b4d RC |
485 | { |
486 | _sourcePackage = spec; | |
487 | } | |
3c196821 RC |
488 | |
489 | packageversion | |
490 | _packageversion::sourcePackage () | |
491 | { | |
492 | if (!sourceVersion) | |
493 | { | |
494 | packagedb db; | |
495 | packagemeta * pkg; | |
496 | pkg = db.findSource (_sourcePackage); | |
497 | /* no valid source meta available, just return the default | |
498 | (blank) package version | |
499 | */ | |
500 | if (!pkg) | |
501 | return sourceVersion; | |
502 | set<packageversion>::iterator i=pkg->versions.begin(); | |
503 | while (i != pkg->versions.end()) | |
504 | { | |
505 | packageversion const & ver = * i; | |
506 | if (_sourcePackage.satisfies (ver)) | |
507 | sourceVersion = ver; | |
508 | ++i; | |
509 | } | |
510 | } | |
511 | return sourceVersion; | |
512 | } | |
513 | ||
514 | bool | |
515 | _packageversion::accessible() const | |
516 | { | |
e5662e0a RC |
517 | bool cached = true; |
518 | for (vector<packagesource>::const_iterator i = sources.begin(); | |
519 | i!=sources.end(); ++i) | |
520 | if (!i->Cached ()) | |
521 | cached = false; | |
522 | if (cached) | |
523 | return true; | |
524 | if (::source == IDC_SOURCE_CWD) | |
525 | return false; | |
526 | unsigned int retrievable = 0; | |
527 | for (vector<packagesource>::const_iterator i = sources.begin(); | |
528 | i!=sources.end(); ++i) | |
529 | if (i->sites.size() || i->Cached ()) | |
530 | retrievable += 1; | |
531 | return retrievable == sources.size(); | |
3c196821 RC |
532 | } |
533 | ||
534 | bool | |
535 | _packageversion::changeRequested () | |
536 | { | |
537 | return (picked || sourcePackage().picked()); | |
538 | } | |
ad646f43 RC |
539 | |
540 | void | |
541 | _packageversion::addScript(Script const &aScript) | |
542 | { | |
543 | scripts().push_back(aScript); | |
544 | } | |
545 | ||
546 | std::vector <Script> & | |
547 | _packageversion::scripts() | |
548 | { | |
549 | return scripts_; | |
550 | } |