| 1 | // -*- mode: cpp; mode: fold -*- |
| 2 | // Description /*{{{*/ |
| 3 | // $Id: acquire-item.cc,v 1.46.2.9 2004/01/16 18:51:11 mdz Exp $ |
| 4 | /* ###################################################################### |
| 5 | |
| 6 | Acquire Item - Item to acquire |
| 7 | |
| 8 | Each item can download to exactly one file at a time. This means you |
| 9 | cannot create an item that fetches two uri's to two files at the same |
| 10 | time. The pkgAcqIndex class creates a second class upon instantiation |
| 11 | to fetch the other index files because of this. |
| 12 | |
| 13 | ##################################################################### */ |
| 14 | /*}}}*/ |
| 15 | // Include Files /*{{{*/ |
| 16 | #include <config.h> |
| 17 | |
| 18 | #include <apt-pkg/acquire-item.h> |
| 19 | #include <apt-pkg/configuration.h> |
| 20 | #include <apt-pkg/aptconfiguration.h> |
| 21 | #include <apt-pkg/sourcelist.h> |
| 22 | #include <apt-pkg/error.h> |
| 23 | #include <apt-pkg/strutl.h> |
| 24 | #include <apt-pkg/fileutl.h> |
| 25 | #include <apt-pkg/tagfile.h> |
| 26 | #include <apt-pkg/metaindex.h> |
| 27 | #include <apt-pkg/acquire.h> |
| 28 | #include <apt-pkg/hashes.h> |
| 29 | #include <apt-pkg/indexfile.h> |
| 30 | #include <apt-pkg/pkgcache.h> |
| 31 | #include <apt-pkg/cacheiterators.h> |
| 32 | #include <apt-pkg/pkgrecords.h> |
| 33 | #include <apt-pkg/gpgv.h> |
| 34 | |
| 35 | #include <algorithm> |
| 36 | #include <stddef.h> |
| 37 | #include <stdlib.h> |
| 38 | #include <string.h> |
| 39 | #include <iostream> |
| 40 | #include <vector> |
| 41 | #include <sys/stat.h> |
| 42 | #include <unistd.h> |
| 43 | #include <errno.h> |
| 44 | #include <string> |
| 45 | #include <stdio.h> |
| 46 | #include <ctime> |
| 47 | #include <sstream> |
| 48 | #include <numeric> |
| 49 | |
| 50 | #include <apti18n.h> |
| 51 | /*}}}*/ |
| 52 | |
| 53 | using namespace std; |
| 54 | |
| 55 | static void printHashSumComparison(std::string const &URI, HashStringList const &Expected, HashStringList const &Actual) /*{{{*/ |
| 56 | { |
| 57 | if (_config->FindB("Debug::Acquire::HashSumMismatch", false) == false) |
| 58 | return; |
| 59 | std::cerr << std::endl << URI << ":" << std::endl << " Expected Hash: " << std::endl; |
| 60 | for (HashStringList::const_iterator hs = Expected.begin(); hs != Expected.end(); ++hs) |
| 61 | std::cerr << "\t- " << hs->toStr() << std::endl; |
| 62 | std::cerr << " Actual Hash: " << std::endl; |
| 63 | for (HashStringList::const_iterator hs = Actual.begin(); hs != Actual.end(); ++hs) |
| 64 | std::cerr << "\t- " << hs->toStr() << std::endl; |
| 65 | } |
| 66 | /*}}}*/ |
| 67 | static std::string GetPartialFileName(std::string const &file) /*{{{*/ |
| 68 | { |
| 69 | std::string DestFile = _config->FindDir("Dir::State::lists") + "partial/"; |
| 70 | DestFile += file; |
| 71 | return DestFile; |
| 72 | } |
| 73 | /*}}}*/ |
| 74 | static std::string GetPartialFileNameFromURI(std::string const &uri) /*{{{*/ |
| 75 | { |
| 76 | return GetPartialFileName(URItoFileName(uri)); |
| 77 | } |
| 78 | /*}}}*/ |
| 79 | static std::string GetFinalFileNameFromURI(std::string const &uri) /*{{{*/ |
| 80 | { |
| 81 | return _config->FindDir("Dir::State::lists") + URItoFileName(uri); |
| 82 | } |
| 83 | /*}}}*/ |
| 84 | static std::string GetKeepCompressedFileName(std::string file, IndexTarget const &Target)/*{{{*/ |
| 85 | { |
| 86 | if (Target.KeepCompressed == false) |
| 87 | return file; |
| 88 | |
| 89 | std::string const KeepCompressedAs = Target.Option(IndexTarget::KEEPCOMPRESSEDAS); |
| 90 | if (KeepCompressedAs.empty() == false) |
| 91 | { |
| 92 | std::string const ext = KeepCompressedAs.substr(0, KeepCompressedAs.find(' ')); |
| 93 | if (ext != "uncompressed") |
| 94 | file.append(".").append(ext); |
| 95 | } |
| 96 | return file; |
| 97 | } |
| 98 | /*}}}*/ |
| 99 | static std::string GetMergeDiffsPatchFileName(std::string const &Final, std::string const &Patch)/*{{{*/ |
| 100 | { |
| 101 | // rred expects the patch as $FinalFile.ed.$patchname.gz |
| 102 | return Final + ".ed." + Patch + ".gz"; |
| 103 | } |
| 104 | /*}}}*/ |
| 105 | static std::string GetDiffsPatchFileName(std::string const &Final) /*{{{*/ |
| 106 | { |
| 107 | // rred expects the patch as $FinalFile.ed |
| 108 | return Final + ".ed"; |
| 109 | } |
| 110 | /*}}}*/ |
| 111 | static std::string GetExistingFilename(std::string const &File) /*{{{*/ |
| 112 | { |
| 113 | if (RealFileExists(File)) |
| 114 | return File; |
| 115 | for (auto const &type : APT::Configuration::getCompressorExtensions()) |
| 116 | { |
| 117 | std::string const Final = File + type; |
| 118 | if (RealFileExists(Final)) |
| 119 | return Final; |
| 120 | } |
| 121 | return ""; |
| 122 | } |
| 123 | /*}}}*/ |
| 124 | static std::string GetDiffIndexFileName(std::string const &Name) /*{{{*/ |
| 125 | { |
| 126 | return Name + ".diff/Index"; |
| 127 | } |
| 128 | /*}}}*/ |
| 129 | static std::string GetDiffIndexURI(IndexTarget const &Target) /*{{{*/ |
| 130 | { |
| 131 | return Target.URI + ".diff/Index"; |
| 132 | } |
| 133 | /*}}}*/ |
| 134 | |
| 135 | static void ReportMirrorFailureToCentral(pkgAcquire::Item const &I, std::string const &FailCode, std::string const &Details)/*{{{*/ |
| 136 | { |
| 137 | // we only act if a mirror was used at all |
| 138 | if(I.UsedMirror.empty()) |
| 139 | return; |
| 140 | #if 0 |
| 141 | std::cerr << "\nReportMirrorFailure: " |
| 142 | << UsedMirror |
| 143 | << " Uri: " << DescURI() |
| 144 | << " FailCode: " |
| 145 | << FailCode << std::endl; |
| 146 | #endif |
| 147 | string const report = _config->Find("Methods::Mirror::ProblemReporting", |
| 148 | "/usr/lib/apt/apt-report-mirror-failure"); |
| 149 | if(!FileExists(report)) |
| 150 | return; |
| 151 | |
| 152 | std::vector<char const*> const Args = { |
| 153 | report.c_str(), |
| 154 | I.UsedMirror.c_str(), |
| 155 | I.DescURI().c_str(), |
| 156 | FailCode.c_str(), |
| 157 | Details.c_str(), |
| 158 | NULL |
| 159 | }; |
| 160 | |
| 161 | pid_t pid = ExecFork(); |
| 162 | if(pid < 0) |
| 163 | { |
| 164 | _error->Error("ReportMirrorFailure Fork failed"); |
| 165 | return; |
| 166 | } |
| 167 | else if(pid == 0) |
| 168 | { |
| 169 | execvp(Args[0], (char**)Args.data()); |
| 170 | std::cerr << "Could not exec " << Args[0] << std::endl; |
| 171 | _exit(100); |
| 172 | } |
| 173 | if(!ExecWait(pid, "report-mirror-failure")) |
| 174 | _error->Warning("Couldn't report problem to '%s'", report.c_str()); |
| 175 | } |
| 176 | /*}}}*/ |
| 177 | |
| 178 | static bool MessageInsecureRepository(bool const isError, std::string const &msg)/*{{{*/ |
| 179 | { |
| 180 | if (isError) |
| 181 | { |
| 182 | _error->Error("%s", msg.c_str()); |
| 183 | _error->Notice("%s", _("Updating from such a repository can't be done securely, and is therefore disabled by default.")); |
| 184 | } |
| 185 | else |
| 186 | { |
| 187 | _error->Warning("%s", msg.c_str()); |
| 188 | _error->Notice("%s", _("Data from such a repository can't be authenticated and is therefore potentially dangerous to use.")); |
| 189 | } |
| 190 | _error->Notice("%s", _("See apt-secure(8) manpage for repository creation and user configuration details.")); |
| 191 | return false; |
| 192 | } |
| 193 | static bool APT_NONNULL(2) MessageInsecureRepository(bool const isError, char const * const msg, std::string const &repo) |
| 194 | { |
| 195 | std::string m; |
| 196 | strprintf(m, msg, repo.c_str()); |
| 197 | return MessageInsecureRepository(isError, m); |
| 198 | } |
| 199 | /*}}}*/ |
| 200 | static bool APT_NONNULL(1, 3, 4, 5) AllowInsecureRepositories(char const * const msg, std::string const &repo,/*{{{*/ |
| 201 | metaIndex const * const MetaIndexParser, pkgAcqMetaClearSig * const TransactionManager, pkgAcquire::Item * const I) |
| 202 | { |
| 203 | if(MetaIndexParser->GetTrusted() == metaIndex::TRI_YES) |
| 204 | return true; |
| 205 | |
| 206 | if (_config->FindB("Acquire::AllowInsecureRepositories") == true) |
| 207 | { |
| 208 | MessageInsecureRepository(false, msg, repo); |
| 209 | return true; |
| 210 | } |
| 211 | |
| 212 | MessageInsecureRepository(true, msg, repo); |
| 213 | TransactionManager->AbortTransaction(); |
| 214 | I->Status = pkgAcquire::Item::StatError; |
| 215 | return false; |
| 216 | } |
| 217 | /*}}}*/ |
| 218 | static HashStringList GetExpectedHashesFromFor(metaIndex * const Parser, std::string const &MetaKey)/*{{{*/ |
| 219 | { |
| 220 | if (Parser == NULL) |
| 221 | return HashStringList(); |
| 222 | metaIndex::checkSum * const R = Parser->Lookup(MetaKey); |
| 223 | if (R == NULL) |
| 224 | return HashStringList(); |
| 225 | return R->Hashes; |
| 226 | } |
| 227 | /*}}}*/ |
| 228 | |
| 229 | // all ::HashesRequired and ::GetExpectedHashes implementations /*{{{*/ |
| 230 | /* ::GetExpectedHashes is abstract and has to be implemented by all subclasses. |
| 231 | It is best to implement it as broadly as possible, while ::HashesRequired defaults |
| 232 | to true and should be as restrictive as possible for false cases. Note that if |
| 233 | a hash is returned by ::GetExpectedHashes it must match. Only if it doesn't |
| 234 | ::HashesRequired is called to evaluate if its okay to have no hashes. */ |
| 235 | APT_CONST bool pkgAcqTransactionItem::HashesRequired() const |
| 236 | { |
| 237 | /* signed repositories obviously have a parser and good hashes. |
| 238 | unsigned repositories, too, as even if we can't trust them for security, |
| 239 | we can at least trust them for integrity of the download itself. |
| 240 | Only repositories without a Release file can (obviously) not have |
| 241 | hashes – and they are very uncommon and strongly discouraged */ |
| 242 | return TransactionManager->MetaIndexParser->GetLoadedSuccessfully() == metaIndex::TRI_YES; |
| 243 | } |
| 244 | HashStringList pkgAcqTransactionItem::GetExpectedHashes() const |
| 245 | { |
| 246 | return GetExpectedHashesFor(GetMetaKey()); |
| 247 | } |
| 248 | |
| 249 | APT_CONST bool pkgAcqMetaBase::HashesRequired() const |
| 250 | { |
| 251 | // Release and co have no hashes 'by design'. |
| 252 | return false; |
| 253 | } |
| 254 | HashStringList pkgAcqMetaBase::GetExpectedHashes() const |
| 255 | { |
| 256 | return HashStringList(); |
| 257 | } |
| 258 | |
| 259 | APT_CONST bool pkgAcqIndexDiffs::HashesRequired() const |
| 260 | { |
| 261 | /* We can't check hashes of rred result as we don't know what the |
| 262 | hash of the file will be. We just know the hash of the patch(es), |
| 263 | the hash of the file they will apply on and the hash of the resulting |
| 264 | file. */ |
| 265 | if (State == StateFetchDiff) |
| 266 | return true; |
| 267 | return false; |
| 268 | } |
| 269 | HashStringList pkgAcqIndexDiffs::GetExpectedHashes() const |
| 270 | { |
| 271 | if (State == StateFetchDiff) |
| 272 | return available_patches[0].download_hashes; |
| 273 | return HashStringList(); |
| 274 | } |
| 275 | |
| 276 | APT_CONST bool pkgAcqIndexMergeDiffs::HashesRequired() const |
| 277 | { |
| 278 | /* @see #pkgAcqIndexDiffs::HashesRequired, with the difference that |
| 279 | we can check the rred result after all patches are applied as |
| 280 | we know the expected result rather than potentially apply more patches */ |
| 281 | if (State == StateFetchDiff) |
| 282 | return true; |
| 283 | return State == StateApplyDiff; |
| 284 | } |
| 285 | HashStringList pkgAcqIndexMergeDiffs::GetExpectedHashes() const |
| 286 | { |
| 287 | if (State == StateFetchDiff) |
| 288 | return patch.download_hashes; |
| 289 | else if (State == StateApplyDiff) |
| 290 | return GetExpectedHashesFor(Target.MetaKey); |
| 291 | return HashStringList(); |
| 292 | } |
| 293 | |
| 294 | APT_CONST bool pkgAcqArchive::HashesRequired() const |
| 295 | { |
| 296 | return LocalSource == false; |
| 297 | } |
| 298 | HashStringList pkgAcqArchive::GetExpectedHashes() const |
| 299 | { |
| 300 | // figured out while parsing the records |
| 301 | return ExpectedHashes; |
| 302 | } |
| 303 | |
| 304 | APT_CONST bool pkgAcqFile::HashesRequired() const |
| 305 | { |
| 306 | // supplied as parameter at creation time, so the caller decides |
| 307 | return ExpectedHashes.usable(); |
| 308 | } |
| 309 | HashStringList pkgAcqFile::GetExpectedHashes() const |
| 310 | { |
| 311 | return ExpectedHashes; |
| 312 | } |
| 313 | /*}}}*/ |
| 314 | // Acquire::Item::QueueURI and specialisations from child classes /*{{{*/ |
| 315 | bool pkgAcquire::Item::QueueURI(pkgAcquire::ItemDesc &Item) |
| 316 | { |
| 317 | Owner->Enqueue(Item); |
| 318 | return true; |
| 319 | } |
| 320 | /* The idea here is that an item isn't queued if it exists on disk and the |
| 321 | transition manager was a hit as this means that the files it contains |
| 322 | the checksums for can't be updated either (or they are and we are asking |
| 323 | for a hashsum mismatch to happen which helps nobody) */ |
| 324 | bool pkgAcqTransactionItem::QueueURI(pkgAcquire::ItemDesc &Item) |
| 325 | { |
| 326 | if (TransactionManager->State != TransactionStarted) |
| 327 | { |
| 328 | if (_config->FindB("Debug::Acquire::Transaction", false)) |
| 329 | std::clog << "Skip " << Target.URI << " as transaction was already dealt with!" << std::endl; |
| 330 | return false; |
| 331 | } |
| 332 | std::string const FinalFile = GetFinalFilename(); |
| 333 | if (TransactionManager->IMSHit == true && FileExists(FinalFile) == true) |
| 334 | { |
| 335 | PartialFile = DestFile = FinalFile; |
| 336 | Status = StatDone; |
| 337 | return false; |
| 338 | } |
| 339 | // If we got the InRelease file via a mirror, pick all indexes directly from this mirror, too |
| 340 | if (TransactionManager->BaseURI.empty() == false && |
| 341 | URI::SiteOnly(Item.URI) != URI::SiteOnly(TransactionManager->BaseURI)) |
| 342 | { |
| 343 | // this ensures we rewrite only once and only the first step |
| 344 | auto const OldBaseURI = Target.Option(IndexTarget::BASE_URI); |
| 345 | if (OldBaseURI.empty() == false && APT::String::Startswith(Item.URI, OldBaseURI)) |
| 346 | { |
| 347 | auto const ExtraPath = Item.URI.substr(OldBaseURI.length()); |
| 348 | Item.URI = flCombine(TransactionManager->BaseURI, ExtraPath); |
| 349 | UsedMirror = TransactionManager->UsedMirror; |
| 350 | if (Item.Description.find(" ") != string::npos) |
| 351 | Item.Description.replace(0, Item.Description.find(" "), UsedMirror); |
| 352 | } |
| 353 | } |
| 354 | return pkgAcquire::Item::QueueURI(Item); |
| 355 | } |
| 356 | /* The transition manager InRelease itself (or its older sisters-in-law |
| 357 | Release & Release.gpg) is always queued as this allows us to rerun gpgv |
| 358 | on it to verify that we aren't stalled with old files */ |
| 359 | bool pkgAcqMetaBase::QueueURI(pkgAcquire::ItemDesc &Item) |
| 360 | { |
| 361 | return pkgAcquire::Item::QueueURI(Item); |
| 362 | } |
| 363 | /* the Diff/Index needs to queue also the up-to-date complete index file |
| 364 | to ensure that the list cleaner isn't eating it */ |
| 365 | bool pkgAcqDiffIndex::QueueURI(pkgAcquire::ItemDesc &Item) |
| 366 | { |
| 367 | if (pkgAcqTransactionItem::QueueURI(Item) == true) |
| 368 | return true; |
| 369 | QueueOnIMSHit(); |
| 370 | return false; |
| 371 | } |
| 372 | /*}}}*/ |
| 373 | // Acquire::Item::GetFinalFilename and specialisations for child classes /*{{{*/ |
| 374 | std::string pkgAcquire::Item::GetFinalFilename() const |
| 375 | { |
| 376 | // Beware: Desc.URI is modified by redirections |
| 377 | return GetFinalFileNameFromURI(Desc.URI); |
| 378 | } |
| 379 | std::string pkgAcqDiffIndex::GetFinalFilename() const |
| 380 | { |
| 381 | return GetFinalFileNameFromURI(GetDiffIndexURI(Target)); |
| 382 | } |
| 383 | std::string pkgAcqIndex::GetFinalFilename() const |
| 384 | { |
| 385 | std::string const FinalFile = GetFinalFileNameFromURI(Target.URI); |
| 386 | return GetKeepCompressedFileName(FinalFile, Target); |
| 387 | } |
| 388 | std::string pkgAcqMetaSig::GetFinalFilename() const |
| 389 | { |
| 390 | return GetFinalFileNameFromURI(Target.URI); |
| 391 | } |
| 392 | std::string pkgAcqBaseIndex::GetFinalFilename() const |
| 393 | { |
| 394 | return GetFinalFileNameFromURI(Target.URI); |
| 395 | } |
| 396 | std::string pkgAcqMetaBase::GetFinalFilename() const |
| 397 | { |
| 398 | return GetFinalFileNameFromURI(Target.URI); |
| 399 | } |
| 400 | std::string pkgAcqArchive::GetFinalFilename() const |
| 401 | { |
| 402 | return _config->FindDir("Dir::Cache::Archives") + flNotDir(StoreFilename); |
| 403 | } |
| 404 | /*}}}*/ |
| 405 | // pkgAcqTransactionItem::GetMetaKey and specialisations for child classes /*{{{*/ |
| 406 | std::string pkgAcqTransactionItem::GetMetaKey() const |
| 407 | { |
| 408 | return Target.MetaKey; |
| 409 | } |
| 410 | std::string pkgAcqIndex::GetMetaKey() const |
| 411 | { |
| 412 | if (Stage == STAGE_DECOMPRESS_AND_VERIFY || CurrentCompressionExtension == "uncompressed") |
| 413 | return Target.MetaKey; |
| 414 | return Target.MetaKey + "." + CurrentCompressionExtension; |
| 415 | } |
| 416 | std::string pkgAcqDiffIndex::GetMetaKey() const |
| 417 | { |
| 418 | return GetDiffIndexFileName(Target.MetaKey); |
| 419 | } |
| 420 | /*}}}*/ |
| 421 | //pkgAcqTransactionItem::TransactionState and specialisations for child classes /*{{{*/ |
| 422 | bool pkgAcqTransactionItem::TransactionState(TransactionStates const state) |
| 423 | { |
| 424 | bool const Debug = _config->FindB("Debug::Acquire::Transaction", false); |
| 425 | switch(state) |
| 426 | { |
| 427 | case TransactionStarted: _error->Fatal("Item %s changed to invalid transaction start state!", Target.URI.c_str()); break; |
| 428 | case TransactionAbort: |
| 429 | if(Debug == true) |
| 430 | std::clog << " Cancel: " << DestFile << std::endl; |
| 431 | if (Status == pkgAcquire::Item::StatIdle) |
| 432 | { |
| 433 | Status = pkgAcquire::Item::StatDone; |
| 434 | Dequeue(); |
| 435 | } |
| 436 | break; |
| 437 | case TransactionCommit: |
| 438 | if(PartialFile.empty() == false) |
| 439 | { |
| 440 | bool sameFile = (PartialFile == DestFile); |
| 441 | // we use symlinks on IMS-Hit to avoid copies |
| 442 | if (RealFileExists(DestFile)) |
| 443 | { |
| 444 | struct stat Buf; |
| 445 | if (lstat(PartialFile.c_str(), &Buf) != -1) |
| 446 | { |
| 447 | if (S_ISLNK(Buf.st_mode) && Buf.st_size > 0) |
| 448 | { |
| 449 | char partial[Buf.st_size + 1]; |
| 450 | ssize_t const sp = readlink(PartialFile.c_str(), partial, Buf.st_size); |
| 451 | if (sp == -1) |
| 452 | _error->Errno("pkgAcqTransactionItem::TransactionState-sp", _("Failed to readlink %s"), PartialFile.c_str()); |
| 453 | else |
| 454 | { |
| 455 | partial[sp] = '\0'; |
| 456 | sameFile = (DestFile == partial); |
| 457 | } |
| 458 | } |
| 459 | } |
| 460 | else |
| 461 | _error->Errno("pkgAcqTransactionItem::TransactionState-stat", _("Failed to stat %s"), PartialFile.c_str()); |
| 462 | } |
| 463 | if (sameFile == false) |
| 464 | { |
| 465 | // ensure that even without lists-cleanup all compressions are nuked |
| 466 | std::string FinalFile = GetFinalFileNameFromURI(Target.URI); |
| 467 | if (FileExists(FinalFile)) |
| 468 | { |
| 469 | if(Debug == true) |
| 470 | std::clog << "rm " << FinalFile << " # " << DescURI() << std::endl; |
| 471 | if (RemoveFile("TransactionStates-Cleanup", FinalFile) == false) |
| 472 | return false; |
| 473 | } |
| 474 | for (auto const &ext: APT::Configuration::getCompressorExtensions()) |
| 475 | { |
| 476 | auto const Final = FinalFile + ext; |
| 477 | if (FileExists(Final)) |
| 478 | { |
| 479 | if(Debug == true) |
| 480 | std::clog << "rm " << Final << " # " << DescURI() << std::endl; |
| 481 | if (RemoveFile("TransactionStates-Cleanup", Final) == false) |
| 482 | return false; |
| 483 | } |
| 484 | } |
| 485 | if(Debug == true) |
| 486 | std::clog << "mv " << PartialFile << " -> "<< DestFile << " # " << DescURI() << std::endl; |
| 487 | if (Rename(PartialFile, DestFile) == false) |
| 488 | return false; |
| 489 | } |
| 490 | else if(Debug == true) |
| 491 | std::clog << "keep " << PartialFile << " # " << DescURI() << std::endl; |
| 492 | |
| 493 | } else { |
| 494 | if(Debug == true) |
| 495 | std::clog << "rm " << DestFile << " # " << DescURI() << std::endl; |
| 496 | if (RemoveFile("TransItem::TransactionCommit", DestFile) == false) |
| 497 | return false; |
| 498 | } |
| 499 | break; |
| 500 | } |
| 501 | return true; |
| 502 | } |
| 503 | bool pkgAcqMetaBase::TransactionState(TransactionStates const state) |
| 504 | { |
| 505 | // Do not remove InRelease on IMSHit of Release.gpg [yes, this is very edgecasey] |
| 506 | if (TransactionManager->IMSHit == false) |
| 507 | return pkgAcqTransactionItem::TransactionState(state); |
| 508 | return true; |
| 509 | } |
| 510 | bool pkgAcqIndex::TransactionState(TransactionStates const state) |
| 511 | { |
| 512 | if (pkgAcqTransactionItem::TransactionState(state) == false) |
| 513 | return false; |
| 514 | |
| 515 | switch (state) |
| 516 | { |
| 517 | case TransactionStarted: _error->Fatal("AcqIndex %s changed to invalid transaction start state!", Target.URI.c_str()); break; |
| 518 | case TransactionAbort: |
| 519 | if (Stage == STAGE_DECOMPRESS_AND_VERIFY) |
| 520 | { |
| 521 | // keep the compressed file, but drop the decompressed |
| 522 | EraseFileName.clear(); |
| 523 | if (PartialFile.empty() == false && flExtension(PartialFile) != CurrentCompressionExtension) |
| 524 | RemoveFile("TransactionAbort", PartialFile); |
| 525 | } |
| 526 | break; |
| 527 | case TransactionCommit: |
| 528 | if (EraseFileName.empty() == false) |
| 529 | RemoveFile("AcqIndex::TransactionCommit", EraseFileName); |
| 530 | break; |
| 531 | } |
| 532 | return true; |
| 533 | } |
| 534 | bool pkgAcqDiffIndex::TransactionState(TransactionStates const state) |
| 535 | { |
| 536 | if (pkgAcqTransactionItem::TransactionState(state) == false) |
| 537 | return false; |
| 538 | |
| 539 | switch (state) |
| 540 | { |
| 541 | case TransactionStarted: _error->Fatal("Item %s changed to invalid transaction start state!", Target.URI.c_str()); break; |
| 542 | case TransactionCommit: |
| 543 | break; |
| 544 | case TransactionAbort: |
| 545 | std::string const Partial = GetPartialFileNameFromURI(Target.URI); |
| 546 | RemoveFile("TransactionAbort", Partial); |
| 547 | break; |
| 548 | } |
| 549 | |
| 550 | return true; |
| 551 | } |
| 552 | /*}}}*/ |
| 553 | |
| 554 | class APT_HIDDEN NoActionItem : public pkgAcquire::Item /*{{{*/ |
| 555 | /* The sole purpose of this class is having an item which does nothing to |
| 556 | reach its done state to prevent cleanup deleting the mentioned file. |
| 557 | Handy in cases in which we know we have the file already, like IMS-Hits. */ |
| 558 | { |
| 559 | IndexTarget const Target; |
| 560 | public: |
| 561 | virtual std::string DescURI() const APT_OVERRIDE {return Target.URI;}; |
| 562 | virtual HashStringList GetExpectedHashes() const APT_OVERRIDE {return HashStringList();}; |
| 563 | |
| 564 | NoActionItem(pkgAcquire * const Owner, IndexTarget const &Target) : |
| 565 | pkgAcquire::Item(Owner), Target(Target) |
| 566 | { |
| 567 | Status = StatDone; |
| 568 | DestFile = GetFinalFileNameFromURI(Target.URI); |
| 569 | } |
| 570 | NoActionItem(pkgAcquire * const Owner, IndexTarget const &Target, std::string const &FinalFile) : |
| 571 | pkgAcquire::Item(Owner), Target(Target) |
| 572 | { |
| 573 | Status = StatDone; |
| 574 | DestFile = FinalFile; |
| 575 | } |
| 576 | }; |
| 577 | /*}}}*/ |
| 578 | class APT_HIDDEN CleanupItem : public pkgAcqTransactionItem /*{{{*/ |
| 579 | /* This class ensures that a file which was configured but isn't downloaded |
| 580 | for various reasons isn't kept in an old version in the lists directory. |
| 581 | In a way its the reverse of NoActionItem as it helps with removing files |
| 582 | even if the lists-cleanup is deactivated. */ |
| 583 | { |
| 584 | public: |
| 585 | virtual std::string DescURI() const APT_OVERRIDE {return Target.URI;}; |
| 586 | virtual HashStringList GetExpectedHashes() const APT_OVERRIDE {return HashStringList();}; |
| 587 | |
| 588 | CleanupItem(pkgAcquire * const Owner, pkgAcqMetaClearSig * const TransactionManager, IndexTarget const &Target) : |
| 589 | pkgAcqTransactionItem(Owner, TransactionManager, Target) |
| 590 | { |
| 591 | Status = StatDone; |
| 592 | DestFile = GetFinalFileNameFromURI(Target.URI); |
| 593 | } |
| 594 | bool TransactionState(TransactionStates const state) APT_OVERRIDE |
| 595 | { |
| 596 | switch (state) |
| 597 | { |
| 598 | case TransactionStarted: |
| 599 | break; |
| 600 | case TransactionAbort: |
| 601 | break; |
| 602 | case TransactionCommit: |
| 603 | if (_config->FindB("Debug::Acquire::Transaction", false) == true) |
| 604 | std::clog << "rm " << DestFile << " # " << DescURI() << std::endl; |
| 605 | if (RemoveFile("TransItem::TransactionCommit", DestFile) == false) |
| 606 | return false; |
| 607 | break; |
| 608 | } |
| 609 | return true; |
| 610 | } |
| 611 | }; |
| 612 | /*}}}*/ |
| 613 | |
| 614 | // Acquire::Item::Item - Constructor /*{{{*/ |
| 615 | APT_IGNORE_DEPRECATED_PUSH |
| 616 | pkgAcquire::Item::Item(pkgAcquire * const owner) : |
| 617 | FileSize(0), PartialSize(0), Mode(0), ID(0), Complete(false), Local(false), |
| 618 | QueueCounter(0), ExpectedAdditionalItems(0), Owner(owner), d(NULL) |
| 619 | { |
| 620 | Owner->Add(this); |
| 621 | Status = StatIdle; |
| 622 | } |
| 623 | APT_IGNORE_DEPRECATED_POP |
| 624 | /*}}}*/ |
| 625 | // Acquire::Item::~Item - Destructor /*{{{*/ |
| 626 | pkgAcquire::Item::~Item() |
| 627 | { |
| 628 | Owner->Remove(this); |
| 629 | } |
| 630 | /*}}}*/ |
| 631 | std::string pkgAcquire::Item::Custom600Headers() const /*{{{*/ |
| 632 | { |
| 633 | return std::string(); |
| 634 | } |
| 635 | /*}}}*/ |
| 636 | std::string pkgAcquire::Item::ShortDesc() const /*{{{*/ |
| 637 | { |
| 638 | return DescURI(); |
| 639 | } |
| 640 | /*}}}*/ |
| 641 | APT_CONST void pkgAcquire::Item::Finished() /*{{{*/ |
| 642 | { |
| 643 | } |
| 644 | /*}}}*/ |
| 645 | APT_PURE pkgAcquire * pkgAcquire::Item::GetOwner() const /*{{{*/ |
| 646 | { |
| 647 | return Owner; |
| 648 | } |
| 649 | /*}}}*/ |
| 650 | APT_CONST pkgAcquire::ItemDesc &pkgAcquire::Item::GetItemDesc() /*{{{*/ |
| 651 | { |
| 652 | return Desc; |
| 653 | } |
| 654 | /*}}}*/ |
| 655 | APT_CONST bool pkgAcquire::Item::IsTrusted() const /*{{{*/ |
| 656 | { |
| 657 | return false; |
| 658 | } |
| 659 | /*}}}*/ |
| 660 | // Acquire::Item::Failed - Item failed to download /*{{{*/ |
| 661 | // --------------------------------------------------------------------- |
| 662 | /* We return to an idle state if there are still other queues that could |
| 663 | fetch this object */ |
| 664 | void pkgAcquire::Item::Failed(string const &Message,pkgAcquire::MethodConfig const * const Cnf) |
| 665 | { |
| 666 | if (QueueCounter <= 1) |
| 667 | { |
| 668 | /* This indicates that the file is not available right now but might |
| 669 | be sometime later. If we do a retry cycle then this should be |
| 670 | retried [CDROMs] */ |
| 671 | if (Cnf != NULL && Cnf->LocalOnly == true && |
| 672 | StringToBool(LookupTag(Message,"Transient-Failure"),false) == true) |
| 673 | { |
| 674 | Status = StatIdle; |
| 675 | Dequeue(); |
| 676 | return; |
| 677 | } |
| 678 | |
| 679 | switch (Status) |
| 680 | { |
| 681 | case StatIdle: |
| 682 | case StatFetching: |
| 683 | case StatDone: |
| 684 | Status = StatError; |
| 685 | break; |
| 686 | case StatAuthError: |
| 687 | case StatError: |
| 688 | case StatTransientNetworkError: |
| 689 | break; |
| 690 | } |
| 691 | Complete = false; |
| 692 | Dequeue(); |
| 693 | } |
| 694 | |
| 695 | string const FailReason = LookupTag(Message, "FailReason"); |
| 696 | enum { MAXIMUM_SIZE_EXCEEDED, HASHSUM_MISMATCH, OTHER } failreason = OTHER; |
| 697 | if ( FailReason == "MaximumSizeExceeded") |
| 698 | failreason = MAXIMUM_SIZE_EXCEEDED; |
| 699 | else if (Status == StatAuthError) |
| 700 | failreason = HASHSUM_MISMATCH; |
| 701 | |
| 702 | if(ErrorText.empty()) |
| 703 | { |
| 704 | if (Status == StatAuthError) |
| 705 | { |
| 706 | std::ostringstream out; |
| 707 | switch (failreason) |
| 708 | { |
| 709 | case HASHSUM_MISMATCH: |
| 710 | out << _("Hash Sum mismatch") << std::endl; |
| 711 | break; |
| 712 | case MAXIMUM_SIZE_EXCEEDED: |
| 713 | case OTHER: |
| 714 | out << LookupTag(Message, "Message") << std::endl; |
| 715 | break; |
| 716 | } |
| 717 | auto const ExpectedHashes = GetExpectedHashes(); |
| 718 | if (ExpectedHashes.empty() == false) |
| 719 | { |
| 720 | out << "Hashes of expected file:" << std::endl; |
| 721 | for (auto const &hs: ExpectedHashes) |
| 722 | out << " - " << hs.toStr() << std::endl; |
| 723 | } |
| 724 | if (failreason == HASHSUM_MISMATCH) |
| 725 | { |
| 726 | out << "Hashes of received file:" << std::endl; |
| 727 | for (char const * const * type = HashString::SupportedHashes(); *type != NULL; ++type) |
| 728 | { |
| 729 | std::string const tagname = std::string(*type) + "-Hash"; |
| 730 | std::string const hashsum = LookupTag(Message, tagname.c_str()); |
| 731 | if (hashsum.empty() == false) |
| 732 | out << " - " << HashString(*type, hashsum).toStr() << std::endl; |
| 733 | } |
| 734 | out << "Last modification reported: " << LookupTag(Message, "Last-Modified", "<none>") << std::endl; |
| 735 | } |
| 736 | ErrorText = out.str(); |
| 737 | } |
| 738 | else |
| 739 | ErrorText = LookupTag(Message,"Message"); |
| 740 | } |
| 741 | |
| 742 | switch (failreason) |
| 743 | { |
| 744 | case MAXIMUM_SIZE_EXCEEDED: RenameOnError(MaximumSizeExceeded); break; |
| 745 | case HASHSUM_MISMATCH: RenameOnError(HashSumMismatch); break; |
| 746 | case OTHER: break; |
| 747 | } |
| 748 | |
| 749 | if (FailReason.empty() == false) |
| 750 | ReportMirrorFailureToCentral(*this, FailReason, ErrorText); |
| 751 | else |
| 752 | ReportMirrorFailureToCentral(*this, ErrorText, ErrorText); |
| 753 | |
| 754 | if (QueueCounter > 1) |
| 755 | Status = StatIdle; |
| 756 | } |
| 757 | /*}}}*/ |
| 758 | // Acquire::Item::Start - Item has begun to download /*{{{*/ |
| 759 | // --------------------------------------------------------------------- |
| 760 | /* Stash status and the file size. Note that setting Complete means |
| 761 | sub-phases of the acquire process such as decompresion are operating */ |
| 762 | void pkgAcquire::Item::Start(string const &/*Message*/, unsigned long long const Size) |
| 763 | { |
| 764 | Status = StatFetching; |
| 765 | ErrorText.clear(); |
| 766 | if (FileSize == 0 && Complete == false) |
| 767 | FileSize = Size; |
| 768 | } |
| 769 | /*}}}*/ |
| 770 | // Acquire::Item::VerifyDone - check if Item was downloaded OK /*{{{*/ |
| 771 | /* Note that hash-verification is 'hardcoded' in acquire-worker and has |
| 772 | * already passed if this method is called. */ |
| 773 | bool pkgAcquire::Item::VerifyDone(std::string const &Message, |
| 774 | pkgAcquire::MethodConfig const * const /*Cnf*/) |
| 775 | { |
| 776 | std::string const FileName = LookupTag(Message,"Filename"); |
| 777 | if (FileName.empty() == true) |
| 778 | { |
| 779 | Status = StatError; |
| 780 | ErrorText = "Method gave a blank filename"; |
| 781 | return false; |
| 782 | } |
| 783 | |
| 784 | return true; |
| 785 | } |
| 786 | /*}}}*/ |
| 787 | // Acquire::Item::Done - Item downloaded OK /*{{{*/ |
| 788 | void pkgAcquire::Item::Done(string const &/*Message*/, HashStringList const &Hashes, |
| 789 | pkgAcquire::MethodConfig const * const /*Cnf*/) |
| 790 | { |
| 791 | // We just downloaded something.. |
| 792 | if (FileSize == 0) |
| 793 | { |
| 794 | unsigned long long const downloadedSize = Hashes.FileSize(); |
| 795 | if (downloadedSize != 0) |
| 796 | { |
| 797 | FileSize = downloadedSize; |
| 798 | } |
| 799 | } |
| 800 | Status = StatDone; |
| 801 | ErrorText = string(); |
| 802 | Owner->Dequeue(this); |
| 803 | } |
| 804 | /*}}}*/ |
| 805 | // Acquire::Item::Rename - Rename a file /*{{{*/ |
| 806 | // --------------------------------------------------------------------- |
| 807 | /* This helper function is used by a lot of item methods as their final |
| 808 | step */ |
| 809 | bool pkgAcquire::Item::Rename(string const &From,string const &To) |
| 810 | { |
| 811 | if (From == To || rename(From.c_str(),To.c_str()) == 0) |
| 812 | return true; |
| 813 | |
| 814 | std::string S; |
| 815 | strprintf(S, _("rename failed, %s (%s -> %s)."), strerror(errno), |
| 816 | From.c_str(),To.c_str()); |
| 817 | Status = StatError; |
| 818 | if (ErrorText.empty()) |
| 819 | ErrorText = S; |
| 820 | else |
| 821 | ErrorText = ErrorText + ": " + S; |
| 822 | return false; |
| 823 | } |
| 824 | /*}}}*/ |
| 825 | void pkgAcquire::Item::Dequeue() /*{{{*/ |
| 826 | { |
| 827 | Owner->Dequeue(this); |
| 828 | } |
| 829 | /*}}}*/ |
| 830 | bool pkgAcquire::Item::RenameOnError(pkgAcquire::Item::RenameOnErrorState const error)/*{{{*/ |
| 831 | { |
| 832 | if (RealFileExists(DestFile)) |
| 833 | Rename(DestFile, DestFile + ".FAILED"); |
| 834 | |
| 835 | std::string errtext; |
| 836 | switch (error) |
| 837 | { |
| 838 | case HashSumMismatch: |
| 839 | errtext = _("Hash Sum mismatch"); |
| 840 | break; |
| 841 | case SizeMismatch: |
| 842 | errtext = _("Size mismatch"); |
| 843 | Status = StatAuthError; |
| 844 | break; |
| 845 | case InvalidFormat: |
| 846 | errtext = _("Invalid file format"); |
| 847 | Status = StatError; |
| 848 | // do not report as usually its not the mirrors fault, but Portal/Proxy |
| 849 | break; |
| 850 | case SignatureError: |
| 851 | errtext = _("Signature error"); |
| 852 | Status = StatError; |
| 853 | break; |
| 854 | case NotClearsigned: |
| 855 | strprintf(errtext, _("Clearsigned file isn't valid, got '%s' (does the network require authentication?)"), "NOSPLIT"); |
| 856 | Status = StatAuthError; |
| 857 | break; |
| 858 | case MaximumSizeExceeded: |
| 859 | // the method is expected to report a good error for this |
| 860 | break; |
| 861 | case PDiffError: |
| 862 | // no handling here, done by callers |
| 863 | break; |
| 864 | } |
| 865 | if (ErrorText.empty()) |
| 866 | ErrorText = errtext; |
| 867 | return false; |
| 868 | } |
| 869 | /*}}}*/ |
| 870 | void pkgAcquire::Item::SetActiveSubprocess(const std::string &subprocess)/*{{{*/ |
| 871 | { |
| 872 | ActiveSubprocess = subprocess; |
| 873 | APT_IGNORE_DEPRECATED(Mode = ActiveSubprocess.c_str();) |
| 874 | } |
| 875 | /*}}}*/ |
| 876 | // Acquire::Item::ReportMirrorFailure /*{{{*/ |
| 877 | void pkgAcquire::Item::ReportMirrorFailure(std::string const &FailCode) |
| 878 | { |
| 879 | ReportMirrorFailureToCentral(*this, FailCode, FailCode); |
| 880 | } |
| 881 | /*}}}*/ |
| 882 | std::string pkgAcquire::Item::HashSum() const /*{{{*/ |
| 883 | { |
| 884 | HashStringList const hashes = GetExpectedHashes(); |
| 885 | HashString const * const hs = hashes.find(NULL); |
| 886 | return hs != NULL ? hs->toStr() : ""; |
| 887 | } |
| 888 | /*}}}*/ |
| 889 | |
| 890 | pkgAcqTransactionItem::pkgAcqTransactionItem(pkgAcquire * const Owner, /*{{{*/ |
| 891 | pkgAcqMetaClearSig * const transactionManager, IndexTarget const &target) : |
| 892 | pkgAcquire::Item(Owner), d(NULL), Target(target), TransactionManager(transactionManager) |
| 893 | { |
| 894 | if (TransactionManager != this) |
| 895 | TransactionManager->Add(this); |
| 896 | } |
| 897 | /*}}}*/ |
| 898 | pkgAcqTransactionItem::~pkgAcqTransactionItem() /*{{{*/ |
| 899 | { |
| 900 | } |
| 901 | /*}}}*/ |
| 902 | HashStringList pkgAcqTransactionItem::GetExpectedHashesFor(std::string const &MetaKey) const /*{{{*/ |
| 903 | { |
| 904 | return GetExpectedHashesFromFor(TransactionManager->MetaIndexParser, MetaKey); |
| 905 | } |
| 906 | /*}}}*/ |
| 907 | |
| 908 | static void LoadLastMetaIndexParser(pkgAcqMetaClearSig * const TransactionManager, std::string const &FinalRelease, std::string const &FinalInRelease)/*{{{*/ |
| 909 | { |
| 910 | if (TransactionManager->IMSHit == true) |
| 911 | return; |
| 912 | if (RealFileExists(FinalInRelease) || RealFileExists(FinalRelease)) |
| 913 | { |
| 914 | TransactionManager->LastMetaIndexParser = TransactionManager->MetaIndexParser->UnloadedClone(); |
| 915 | if (TransactionManager->LastMetaIndexParser != NULL) |
| 916 | { |
| 917 | _error->PushToStack(); |
| 918 | if (RealFileExists(FinalInRelease)) |
| 919 | TransactionManager->LastMetaIndexParser->Load(FinalInRelease, NULL); |
| 920 | else |
| 921 | TransactionManager->LastMetaIndexParser->Load(FinalRelease, NULL); |
| 922 | // its unlikely to happen, but if what we have is bad ignore it |
| 923 | if (_error->PendingError()) |
| 924 | { |
| 925 | delete TransactionManager->LastMetaIndexParser; |
| 926 | TransactionManager->LastMetaIndexParser = NULL; |
| 927 | } |
| 928 | _error->RevertToStack(); |
| 929 | } |
| 930 | } |
| 931 | } |
| 932 | /*}}}*/ |
| 933 | |
| 934 | // AcqMetaBase - Constructor /*{{{*/ |
| 935 | pkgAcqMetaBase::pkgAcqMetaBase(pkgAcquire * const Owner, |
| 936 | pkgAcqMetaClearSig * const TransactionManager, |
| 937 | IndexTarget const &DataTarget) |
| 938 | : pkgAcqTransactionItem(Owner, TransactionManager, DataTarget), d(NULL), |
| 939 | AuthPass(false), IMSHit(false), State(TransactionStarted) |
| 940 | { |
| 941 | } |
| 942 | /*}}}*/ |
| 943 | // AcqMetaBase::Add - Add a item to the current Transaction /*{{{*/ |
| 944 | void pkgAcqMetaBase::Add(pkgAcqTransactionItem * const I) |
| 945 | { |
| 946 | Transaction.push_back(I); |
| 947 | } |
| 948 | /*}}}*/ |
| 949 | // AcqMetaBase::AbortTransaction - Abort the current Transaction /*{{{*/ |
| 950 | void pkgAcqMetaBase::AbortTransaction() |
| 951 | { |
| 952 | if(_config->FindB("Debug::Acquire::Transaction", false) == true) |
| 953 | std::clog << "AbortTransaction: " << TransactionManager << std::endl; |
| 954 | |
| 955 | switch (TransactionManager->State) |
| 956 | { |
| 957 | case TransactionStarted: break; |
| 958 | case TransactionAbort: _error->Fatal("Transaction %s was already aborted and is aborted again", TransactionManager->Target.URI.c_str()); return; |
| 959 | case TransactionCommit: _error->Fatal("Transaction %s was already aborted and is now commited", TransactionManager->Target.URI.c_str()); return; |
| 960 | } |
| 961 | TransactionManager->State = TransactionAbort; |
| 962 | |
| 963 | // ensure the toplevel is in error state too |
| 964 | for (std::vector<pkgAcqTransactionItem*>::iterator I = Transaction.begin(); |
| 965 | I != Transaction.end(); ++I) |
| 966 | { |
| 967 | if ((*I)->Status != pkgAcquire::Item::StatFetching) |
| 968 | Owner->Dequeue(*I); |
| 969 | (*I)->TransactionState(TransactionAbort); |
| 970 | } |
| 971 | Transaction.clear(); |
| 972 | } |
| 973 | /*}}}*/ |
| 974 | // AcqMetaBase::TransactionHasError - Check for errors in Transaction /*{{{*/ |
| 975 | APT_PURE bool pkgAcqMetaBase::TransactionHasError() const |
| 976 | { |
| 977 | for (std::vector<pkgAcqTransactionItem*>::const_iterator I = Transaction.begin(); |
| 978 | I != Transaction.end(); ++I) |
| 979 | { |
| 980 | switch((*I)->Status) { |
| 981 | case StatDone: break; |
| 982 | case StatIdle: break; |
| 983 | case StatAuthError: return true; |
| 984 | case StatError: return true; |
| 985 | case StatTransientNetworkError: return true; |
| 986 | case StatFetching: break; |
| 987 | } |
| 988 | } |
| 989 | return false; |
| 990 | } |
| 991 | /*}}}*/ |
| 992 | // AcqMetaBase::CommitTransaction - Commit a transaction /*{{{*/ |
| 993 | void pkgAcqMetaBase::CommitTransaction() |
| 994 | { |
| 995 | if(_config->FindB("Debug::Acquire::Transaction", false) == true) |
| 996 | std::clog << "CommitTransaction: " << this << std::endl; |
| 997 | |
| 998 | switch (TransactionManager->State) |
| 999 | { |
| 1000 | case TransactionStarted: break; |
| 1001 | case TransactionAbort: _error->Fatal("Transaction %s was already commited and is now aborted", TransactionManager->Target.URI.c_str()); return; |
| 1002 | case TransactionCommit: _error->Fatal("Transaction %s was already commited and is again commited", TransactionManager->Target.URI.c_str()); return; |
| 1003 | } |
| 1004 | TransactionManager->State = TransactionCommit; |
| 1005 | |
| 1006 | // move new files into place *and* remove files that are not |
| 1007 | // part of the transaction but are still on disk |
| 1008 | for (std::vector<pkgAcqTransactionItem*>::iterator I = Transaction.begin(); |
| 1009 | I != Transaction.end(); ++I) |
| 1010 | { |
| 1011 | (*I)->TransactionState(TransactionCommit); |
| 1012 | } |
| 1013 | Transaction.clear(); |
| 1014 | } |
| 1015 | /*}}}*/ |
| 1016 | // AcqMetaBase::TransactionStageCopy - Stage a file for copying /*{{{*/ |
| 1017 | void pkgAcqMetaBase::TransactionStageCopy(pkgAcqTransactionItem * const I, |
| 1018 | const std::string &From, |
| 1019 | const std::string &To) |
| 1020 | { |
| 1021 | I->PartialFile = From; |
| 1022 | I->DestFile = To; |
| 1023 | } |
| 1024 | /*}}}*/ |
| 1025 | // AcqMetaBase::TransactionStageRemoval - Stage a file for removal /*{{{*/ |
| 1026 | void pkgAcqMetaBase::TransactionStageRemoval(pkgAcqTransactionItem * const I, |
| 1027 | const std::string &FinalFile) |
| 1028 | { |
| 1029 | I->PartialFile = ""; |
| 1030 | I->DestFile = FinalFile; |
| 1031 | } |
| 1032 | /*}}}*/ |
| 1033 | // AcqMetaBase::GenerateAuthWarning - Check gpg authentication error /*{{{*/ |
| 1034 | /* This method is called from ::Failed handlers. If it returns true, |
| 1035 | no fallback to other files or modi is performed */ |
| 1036 | bool pkgAcqMetaBase::CheckStopAuthentication(pkgAcquire::Item * const I, const std::string &Message) |
| 1037 | { |
| 1038 | string const Final = I->GetFinalFilename(); |
| 1039 | std::string const GPGError = LookupTag(Message, "Message"); |
| 1040 | if (FileExists(Final)) |
| 1041 | { |
| 1042 | I->Status = StatTransientNetworkError; |
| 1043 | _error->Warning(_("An error occurred during the signature verification. " |
| 1044 | "The repository is not updated and the previous index files will be used. " |
| 1045 | "GPG error: %s: %s"), |
| 1046 | Desc.Description.c_str(), |
| 1047 | GPGError.c_str()); |
| 1048 | RunScripts("APT::Update::Auth-Failure"); |
| 1049 | return true; |
| 1050 | } else if (LookupTag(Message,"Message").find("NODATA") != string::npos) { |
| 1051 | /* Invalid signature file, reject (LP: #346386) (Closes: #627642) */ |
| 1052 | _error->Error(_("GPG error: %s: %s"), |
| 1053 | Desc.Description.c_str(), |
| 1054 | GPGError.c_str()); |
| 1055 | I->Status = StatAuthError; |
| 1056 | return true; |
| 1057 | } else { |
| 1058 | _error->Warning(_("GPG error: %s: %s"), |
| 1059 | Desc.Description.c_str(), |
| 1060 | GPGError.c_str()); |
| 1061 | } |
| 1062 | // gpgv method failed |
| 1063 | ReportMirrorFailureToCentral(*this, "GPGFailure", GPGError); |
| 1064 | return false; |
| 1065 | } |
| 1066 | /*}}}*/ |
| 1067 | // AcqMetaBase::Custom600Headers - Get header for AcqMetaBase /*{{{*/ |
| 1068 | // --------------------------------------------------------------------- |
| 1069 | string pkgAcqMetaBase::Custom600Headers() const |
| 1070 | { |
| 1071 | std::string Header = "\nIndex-File: true"; |
| 1072 | std::string MaximumSize; |
| 1073 | strprintf(MaximumSize, "\nMaximum-Size: %i", |
| 1074 | _config->FindI("Acquire::MaxReleaseFileSize", 10*1000*1000)); |
| 1075 | Header += MaximumSize; |
| 1076 | |
| 1077 | string const FinalFile = GetFinalFilename(); |
| 1078 | struct stat Buf; |
| 1079 | if (stat(FinalFile.c_str(),&Buf) == 0) |
| 1080 | Header += "\nLast-Modified: " + TimeRFC1123(Buf.st_mtime); |
| 1081 | |
| 1082 | return Header; |
| 1083 | } |
| 1084 | /*}}}*/ |
| 1085 | // AcqMetaBase::QueueForSignatureVerify /*{{{*/ |
| 1086 | void pkgAcqMetaBase::QueueForSignatureVerify(pkgAcqTransactionItem * const I, std::string const &File, std::string const &Signature) |
| 1087 | { |
| 1088 | AuthPass = true; |
| 1089 | I->Desc.URI = "gpgv:" + Signature; |
| 1090 | I->DestFile = File; |
| 1091 | QueueURI(I->Desc); |
| 1092 | I->SetActiveSubprocess("gpgv"); |
| 1093 | } |
| 1094 | /*}}}*/ |
| 1095 | // AcqMetaBase::CheckDownloadDone /*{{{*/ |
| 1096 | bool pkgAcqMetaBase::CheckDownloadDone(pkgAcqTransactionItem * const I, const std::string &Message, HashStringList const &Hashes) const |
| 1097 | { |
| 1098 | // We have just finished downloading a Release file (it is not |
| 1099 | // verified yet) |
| 1100 | |
| 1101 | // Save the final base URI we got this Release file from |
| 1102 | if (I->UsedMirror.empty() == false && _config->FindB("Acquire::SameMirrorForAllIndexes", true)) |
| 1103 | { |
| 1104 | if (APT::String::Endswith(I->Desc.URI, "InRelease")) |
| 1105 | TransactionManager->BaseURI = I->Desc.URI.substr(0, I->Desc.URI.length() - strlen("InRelease")); |
| 1106 | else if (APT::String::Endswith(I->Desc.URI, "Release")) |
| 1107 | TransactionManager->BaseURI = I->Desc.URI.substr(0, I->Desc.URI.length() - strlen("Release")); |
| 1108 | } |
| 1109 | |
| 1110 | std::string const FileName = LookupTag(Message,"Filename"); |
| 1111 | if (FileName != I->DestFile && RealFileExists(I->DestFile) == false) |
| 1112 | { |
| 1113 | I->Local = true; |
| 1114 | I->Desc.URI = "copy:" + FileName; |
| 1115 | I->QueueURI(I->Desc); |
| 1116 | return false; |
| 1117 | } |
| 1118 | |
| 1119 | // make sure to verify against the right file on I-M-S hit |
| 1120 | bool IMSHit = StringToBool(LookupTag(Message,"IMS-Hit"), false); |
| 1121 | if (IMSHit == false && Hashes.usable()) |
| 1122 | { |
| 1123 | // detect IMS-Hits servers haven't detected by Hash comparison |
| 1124 | std::string const FinalFile = I->GetFinalFilename(); |
| 1125 | if (RealFileExists(FinalFile) && Hashes.VerifyFile(FinalFile) == true) |
| 1126 | { |
| 1127 | IMSHit = true; |
| 1128 | RemoveFile("CheckDownloadDone", I->DestFile); |
| 1129 | } |
| 1130 | } |
| 1131 | |
| 1132 | if(IMSHit == true) |
| 1133 | { |
| 1134 | // for simplicity, the transaction manager is always InRelease |
| 1135 | // even if it doesn't exist. |
| 1136 | TransactionManager->IMSHit = true; |
| 1137 | I->PartialFile = I->DestFile = I->GetFinalFilename(); |
| 1138 | } |
| 1139 | |
| 1140 | // set Item to complete as the remaining work is all local (verify etc) |
| 1141 | I->Complete = true; |
| 1142 | |
| 1143 | return true; |
| 1144 | } |
| 1145 | /*}}}*/ |
| 1146 | bool pkgAcqMetaBase::CheckAuthDone(string const &Message) /*{{{*/ |
| 1147 | { |
| 1148 | // At this point, the gpgv method has succeeded, so there is a |
| 1149 | // valid signature from a key in the trusted keyring. We |
| 1150 | // perform additional verification of its contents, and use them |
| 1151 | // to verify the indexes we are about to download |
| 1152 | |
| 1153 | if (TransactionManager->IMSHit == false) |
| 1154 | { |
| 1155 | // open the last (In)Release if we have it |
| 1156 | std::string const FinalFile = GetFinalFilename(); |
| 1157 | std::string FinalRelease; |
| 1158 | std::string FinalInRelease; |
| 1159 | if (APT::String::Endswith(FinalFile, "InRelease")) |
| 1160 | { |
| 1161 | FinalInRelease = FinalFile; |
| 1162 | FinalRelease = FinalFile.substr(0, FinalFile.length() - strlen("InRelease")) + "Release"; |
| 1163 | } |
| 1164 | else |
| 1165 | { |
| 1166 | FinalInRelease = FinalFile.substr(0, FinalFile.length() - strlen("Release")) + "InRelease"; |
| 1167 | FinalRelease = FinalFile; |
| 1168 | } |
| 1169 | LoadLastMetaIndexParser(TransactionManager, FinalRelease, FinalInRelease); |
| 1170 | } |
| 1171 | |
| 1172 | if (TransactionManager->MetaIndexParser->Load(DestFile, &ErrorText) == false) |
| 1173 | { |
| 1174 | Status = StatAuthError; |
| 1175 | return false; |
| 1176 | } |
| 1177 | |
| 1178 | if (!VerifyVendor(Message)) |
| 1179 | { |
| 1180 | Status = StatAuthError; |
| 1181 | return false; |
| 1182 | } |
| 1183 | |
| 1184 | if (_config->FindB("Debug::pkgAcquire::Auth", false)) |
| 1185 | std::cerr << "Signature verification succeeded: " |
| 1186 | << DestFile << std::endl; |
| 1187 | |
| 1188 | // Download further indexes with verification |
| 1189 | TransactionManager->QueueIndexes(true); |
| 1190 | |
| 1191 | return true; |
| 1192 | } |
| 1193 | /*}}}*/ |
| 1194 | void pkgAcqMetaClearSig::QueueIndexes(bool const verify) /*{{{*/ |
| 1195 | { |
| 1196 | // at this point the real Items are loaded in the fetcher |
| 1197 | ExpectedAdditionalItems = 0; |
| 1198 | |
| 1199 | std::set<std::string> targetsSeen; |
| 1200 | bool const metaBaseSupportsByHash = TransactionManager->MetaIndexParser->GetSupportsAcquireByHash(); |
| 1201 | for (auto &Target: TransactionManager->MetaIndexParser->GetIndexTargets()) |
| 1202 | { |
| 1203 | // if we have seen a target which is created-by a target this one here is declared a |
| 1204 | // fallback to, we skip acquiring the fallback (but we make sure we clean up) |
| 1205 | if (targetsSeen.find(Target.Option(IndexTarget::FALLBACK_OF)) != targetsSeen.end()) |
| 1206 | { |
| 1207 | targetsSeen.emplace(Target.Option(IndexTarget::CREATED_BY)); |
| 1208 | new CleanupItem(Owner, TransactionManager, Target); |
| 1209 | continue; |
| 1210 | } |
| 1211 | // all is an implementation detail. Users shouldn't use this as arch |
| 1212 | // We need this support trickery here as e.g. Debian has binary-all files already, |
| 1213 | // but arch:all packages are still in the arch:any files, so we would waste precious |
| 1214 | // download time, bandwidth and diskspace for nothing, BUT Debian doesn't feature all |
| 1215 | // in the set of supported architectures, so we can filter based on this property rather |
| 1216 | // than invent an entirely new flag we would need to carry for all of eternity. |
| 1217 | if (Target.Option(IndexTarget::ARCHITECTURE) == "all") |
| 1218 | { |
| 1219 | if (TransactionManager->MetaIndexParser->IsArchitectureSupported("all") == false || |
| 1220 | TransactionManager->MetaIndexParser->IsArchitectureAllSupportedFor(Target) == false) |
| 1221 | { |
| 1222 | new CleanupItem(Owner, TransactionManager, Target); |
| 1223 | continue; |
| 1224 | } |
| 1225 | } |
| 1226 | |
| 1227 | bool trypdiff = Target.OptionBool(IndexTarget::PDIFFS); |
| 1228 | if (verify == true) |
| 1229 | { |
| 1230 | if (TransactionManager->MetaIndexParser->Exists(Target.MetaKey) == false) |
| 1231 | { |
| 1232 | // optional targets that we do not have in the Release file are skipped |
| 1233 | if (Target.IsOptional) |
| 1234 | { |
| 1235 | new CleanupItem(Owner, TransactionManager, Target); |
| 1236 | continue; |
| 1237 | } |
| 1238 | |
| 1239 | std::string const &arch = Target.Option(IndexTarget::ARCHITECTURE); |
| 1240 | if (arch.empty() == false) |
| 1241 | { |
| 1242 | if (TransactionManager->MetaIndexParser->IsArchitectureSupported(arch) == false) |
| 1243 | { |
| 1244 | new CleanupItem(Owner, TransactionManager, Target); |
| 1245 | _error->Notice(_("Skipping acquire of configured file '%s' as repository '%s' doesn't support architecture '%s'"), |
| 1246 | Target.MetaKey.c_str(), TransactionManager->Target.Description.c_str(), arch.c_str()); |
| 1247 | continue; |
| 1248 | } |
| 1249 | // if the architecture is officially supported but currently no packages for it available, |
| 1250 | // ignore silently as this is pretty much the same as just shipping an empty file. |
| 1251 | // if we don't know which architectures are supported, we do NOT ignore it to notify user about this |
| 1252 | if (TransactionManager->MetaIndexParser->IsArchitectureSupported("*undefined*") == false) |
| 1253 | { |
| 1254 | new CleanupItem(Owner, TransactionManager, Target); |
| 1255 | continue; |
| 1256 | } |
| 1257 | } |
| 1258 | |
| 1259 | Status = StatAuthError; |
| 1260 | strprintf(ErrorText, _("Unable to find expected entry '%s' in Release file (Wrong sources.list entry or malformed file)"), Target.MetaKey.c_str()); |
| 1261 | return; |
| 1262 | } |
| 1263 | else |
| 1264 | { |
| 1265 | auto const hashes = GetExpectedHashesFor(Target.MetaKey); |
| 1266 | if (hashes.empty() == false) |
| 1267 | { |
| 1268 | if (hashes.usable() == false) |
| 1269 | { |
| 1270 | new CleanupItem(Owner, TransactionManager, Target); |
| 1271 | _error->Warning(_("Skipping acquire of configured file '%s' as repository '%s' provides only weak security information for it"), |
| 1272 | Target.MetaKey.c_str(), TransactionManager->Target.Description.c_str()); |
| 1273 | continue; |
| 1274 | } |
| 1275 | // empty files are skipped as acquiring the very small compressed files is a waste of time |
| 1276 | else if (hashes.FileSize() == 0) |
| 1277 | { |
| 1278 | new CleanupItem(Owner, TransactionManager, Target); |
| 1279 | targetsSeen.emplace(Target.Option(IndexTarget::CREATED_BY)); |
| 1280 | continue; |
| 1281 | } |
| 1282 | } |
| 1283 | } |
| 1284 | |
| 1285 | // autoselect the compression method |
| 1286 | std::vector<std::string> types = VectorizeString(Target.Option(IndexTarget::COMPRESSIONTYPES), ' '); |
| 1287 | types.erase(std::remove_if(types.begin(), types.end(), [&](std::string const &t) { |
| 1288 | if (t == "uncompressed") |
| 1289 | return TransactionManager->MetaIndexParser->Exists(Target.MetaKey) == false; |
| 1290 | std::string const MetaKey = Target.MetaKey + "." + t; |
| 1291 | return TransactionManager->MetaIndexParser->Exists(MetaKey) == false; |
| 1292 | }), types.end()); |
| 1293 | if (types.empty() == false) |
| 1294 | { |
| 1295 | std::ostringstream os; |
| 1296 | // add the special compressiontype byhash first if supported |
| 1297 | std::string const useByHashConf = Target.Option(IndexTarget::BY_HASH); |
| 1298 | bool useByHash = false; |
| 1299 | if(useByHashConf == "force") |
| 1300 | useByHash = true; |
| 1301 | else |
| 1302 | useByHash = StringToBool(useByHashConf) == true && metaBaseSupportsByHash; |
| 1303 | if (useByHash == true) |
| 1304 | os << "by-hash "; |
| 1305 | std::copy(types.begin(), types.end()-1, std::ostream_iterator<std::string>(os, " ")); |
| 1306 | os << *types.rbegin(); |
| 1307 | Target.Options["COMPRESSIONTYPES"] = os.str(); |
| 1308 | } |
| 1309 | else |
| 1310 | Target.Options["COMPRESSIONTYPES"].clear(); |
| 1311 | |
| 1312 | std::string filename = GetExistingFilename(GetFinalFileNameFromURI(Target.URI)); |
| 1313 | if (filename.empty() == false) |
| 1314 | { |
| 1315 | // if the Release file is a hit and we have an index it must be the current one |
| 1316 | if (TransactionManager->IMSHit == true) |
| 1317 | ; |
| 1318 | else if (TransactionManager->LastMetaIndexParser != NULL) |
| 1319 | { |
| 1320 | // see if the file changed since the last Release file |
| 1321 | // we use the uncompressed files as we might compress differently compared to the server, |
| 1322 | // so the hashes might not match, even if they contain the same data. |
| 1323 | HashStringList const newFile = GetExpectedHashesFromFor(TransactionManager->MetaIndexParser, Target.MetaKey); |
| 1324 | HashStringList const oldFile = GetExpectedHashesFromFor(TransactionManager->LastMetaIndexParser, Target.MetaKey); |
| 1325 | if (newFile != oldFile) |
| 1326 | filename.clear(); |
| 1327 | } |
| 1328 | else |
| 1329 | filename.clear(); |
| 1330 | } |
| 1331 | else |
| 1332 | trypdiff = false; // no file to patch |
| 1333 | |
| 1334 | if (filename.empty() == false) |
| 1335 | { |
| 1336 | new NoActionItem(Owner, Target, filename); |
| 1337 | std::string const idxfilename = GetFinalFileNameFromURI(GetDiffIndexURI(Target)); |
| 1338 | if (FileExists(idxfilename)) |
| 1339 | new NoActionItem(Owner, Target, idxfilename); |
| 1340 | targetsSeen.emplace(Target.Option(IndexTarget::CREATED_BY)); |
| 1341 | continue; |
| 1342 | } |
| 1343 | |
| 1344 | // check if we have patches available |
| 1345 | trypdiff &= TransactionManager->MetaIndexParser->Exists(GetDiffIndexFileName(Target.MetaKey)); |
| 1346 | } |
| 1347 | else |
| 1348 | { |
| 1349 | // if we have no file to patch, no point in trying |
| 1350 | trypdiff &= (GetExistingFilename(GetFinalFileNameFromURI(Target.URI)).empty() == false); |
| 1351 | } |
| 1352 | |
| 1353 | // no point in patching from local sources |
| 1354 | if (trypdiff) |
| 1355 | { |
| 1356 | std::string const proto = Target.URI.substr(0, strlen("file:/")); |
| 1357 | if (proto == "file:/" || proto == "copy:/" || proto == "cdrom:") |
| 1358 | trypdiff = false; |
| 1359 | } |
| 1360 | |
| 1361 | // Queue the Index file (Packages, Sources, Translation-$foo, …) |
| 1362 | targetsSeen.emplace(Target.Option(IndexTarget::CREATED_BY)); |
| 1363 | if (trypdiff) |
| 1364 | new pkgAcqDiffIndex(Owner, TransactionManager, Target); |
| 1365 | else |
| 1366 | new pkgAcqIndex(Owner, TransactionManager, Target); |
| 1367 | } |
| 1368 | } |
| 1369 | /*}}}*/ |
| 1370 | bool pkgAcqMetaBase::VerifyVendor(string const &) /*{{{*/ |
| 1371 | { |
| 1372 | string Transformed = TransactionManager->MetaIndexParser->GetExpectedDist(); |
| 1373 | |
| 1374 | if (Transformed == "../project/experimental") |
| 1375 | { |
| 1376 | Transformed = "experimental"; |
| 1377 | } |
| 1378 | |
| 1379 | auto pos = Transformed.rfind('/'); |
| 1380 | if (pos != string::npos) |
| 1381 | { |
| 1382 | Transformed = Transformed.substr(0, pos); |
| 1383 | } |
| 1384 | |
| 1385 | if (Transformed == ".") |
| 1386 | { |
| 1387 | Transformed = ""; |
| 1388 | } |
| 1389 | |
| 1390 | if (TransactionManager->MetaIndexParser->GetValidUntil() > 0) |
| 1391 | { |
| 1392 | time_t const invalid_since = time(NULL) - TransactionManager->MetaIndexParser->GetValidUntil(); |
| 1393 | if (invalid_since > 0) |
| 1394 | { |
| 1395 | std::string errmsg; |
| 1396 | strprintf(errmsg, |
| 1397 | // TRANSLATOR: The first %s is the URL of the bad Release file, the second is |
| 1398 | // the time since then the file is invalid - formatted in the same way as in |
| 1399 | // the download progress display (e.g. 7d 3h 42min 1s) |
| 1400 | _("Release file for %s is expired (invalid since %s). " |
| 1401 | "Updates for this repository will not be applied."), |
| 1402 | Target.URI.c_str(), TimeToStr(invalid_since).c_str()); |
| 1403 | if (ErrorText.empty()) |
| 1404 | ErrorText = errmsg; |
| 1405 | return _error->Error("%s", errmsg.c_str()); |
| 1406 | } |
| 1407 | } |
| 1408 | |
| 1409 | /* Did we get a file older than what we have? This is a last minute IMS hit and doubles |
| 1410 | as a prevention of downgrading us to older (still valid) files */ |
| 1411 | if (TransactionManager->IMSHit == false && TransactionManager->LastMetaIndexParser != NULL && |
| 1412 | TransactionManager->LastMetaIndexParser->GetDate() > TransactionManager->MetaIndexParser->GetDate()) |
| 1413 | { |
| 1414 | TransactionManager->IMSHit = true; |
| 1415 | RemoveFile("VerifyVendor", DestFile); |
| 1416 | PartialFile = DestFile = GetFinalFilename(); |
| 1417 | // load the 'old' file in the 'new' one instead of flipping pointers as |
| 1418 | // the new one isn't owned by us, while the old one is so cleanup would be confused. |
| 1419 | TransactionManager->MetaIndexParser->swapLoad(TransactionManager->LastMetaIndexParser); |
| 1420 | delete TransactionManager->LastMetaIndexParser; |
| 1421 | TransactionManager->LastMetaIndexParser = NULL; |
| 1422 | } |
| 1423 | |
| 1424 | if (_config->FindB("Debug::pkgAcquire::Auth", false)) |
| 1425 | { |
| 1426 | std::cerr << "Got Codename: " << TransactionManager->MetaIndexParser->GetCodename() << std::endl; |
| 1427 | std::cerr << "Expecting Dist: " << TransactionManager->MetaIndexParser->GetExpectedDist() << std::endl; |
| 1428 | std::cerr << "Transformed Dist: " << Transformed << std::endl; |
| 1429 | } |
| 1430 | |
| 1431 | if (TransactionManager->MetaIndexParser->CheckDist(Transformed) == false) |
| 1432 | { |
| 1433 | // This might become fatal one day |
| 1434 | // Status = StatAuthError; |
| 1435 | // ErrorText = "Conflicting distribution; expected " |
| 1436 | // + MetaIndexParser->GetExpectedDist() + " but got " |
| 1437 | // + MetaIndexParser->GetCodename(); |
| 1438 | // return false; |
| 1439 | if (!Transformed.empty()) |
| 1440 | { |
| 1441 | _error->Warning(_("Conflicting distribution: %s (expected %s but got %s)"), |
| 1442 | Desc.Description.c_str(), |
| 1443 | Transformed.c_str(), |
| 1444 | TransactionManager->MetaIndexParser->GetCodename().c_str()); |
| 1445 | } |
| 1446 | } |
| 1447 | |
| 1448 | return true; |
| 1449 | } |
| 1450 | /*}}}*/ |
| 1451 | pkgAcqMetaBase::~pkgAcqMetaBase() |
| 1452 | { |
| 1453 | } |
| 1454 | |
| 1455 | pkgAcqMetaClearSig::pkgAcqMetaClearSig(pkgAcquire * const Owner, /*{{{*/ |
| 1456 | IndexTarget const &ClearsignedTarget, |
| 1457 | IndexTarget const &DetachedDataTarget, IndexTarget const &DetachedSigTarget, |
| 1458 | metaIndex * const MetaIndexParser) : |
| 1459 | pkgAcqMetaIndex(Owner, this, ClearsignedTarget, DetachedSigTarget), |
| 1460 | d(NULL), ClearsignedTarget(ClearsignedTarget), |
| 1461 | DetachedDataTarget(DetachedDataTarget), |
| 1462 | MetaIndexParser(MetaIndexParser), LastMetaIndexParser(NULL) |
| 1463 | { |
| 1464 | // index targets + (worst case:) Release/Release.gpg |
| 1465 | ExpectedAdditionalItems = std::numeric_limits<decltype(ExpectedAdditionalItems)>::max(); |
| 1466 | TransactionManager->Add(this); |
| 1467 | } |
| 1468 | /*}}}*/ |
| 1469 | pkgAcqMetaClearSig::~pkgAcqMetaClearSig() /*{{{*/ |
| 1470 | { |
| 1471 | if (LastMetaIndexParser != NULL) |
| 1472 | delete LastMetaIndexParser; |
| 1473 | } |
| 1474 | /*}}}*/ |
| 1475 | // pkgAcqMetaClearSig::Custom600Headers - Insert custom request headers /*{{{*/ |
| 1476 | string pkgAcqMetaClearSig::Custom600Headers() const |
| 1477 | { |
| 1478 | string Header = pkgAcqMetaBase::Custom600Headers(); |
| 1479 | Header += "\nFail-Ignore: true"; |
| 1480 | std::string const key = TransactionManager->MetaIndexParser->GetSignedBy(); |
| 1481 | if (key.empty() == false) |
| 1482 | Header += "\nSigned-By: " + key; |
| 1483 | |
| 1484 | return Header; |
| 1485 | } |
| 1486 | /*}}}*/ |
| 1487 | void pkgAcqMetaClearSig::Finished() /*{{{*/ |
| 1488 | { |
| 1489 | if(_config->FindB("Debug::Acquire::Transaction", false) == true) |
| 1490 | std::clog << "Finished: " << DestFile <<std::endl; |
| 1491 | if(TransactionManager->State == TransactionStarted && |
| 1492 | TransactionManager->TransactionHasError() == false) |
| 1493 | TransactionManager->CommitTransaction(); |
| 1494 | } |
| 1495 | /*}}}*/ |
| 1496 | bool pkgAcqMetaClearSig::VerifyDone(std::string const &Message, /*{{{*/ |
| 1497 | pkgAcquire::MethodConfig const * const Cnf) |
| 1498 | { |
| 1499 | Item::VerifyDone(Message, Cnf); |
| 1500 | |
| 1501 | if (FileExists(DestFile) && !StartsWithGPGClearTextSignature(DestFile)) |
| 1502 | return RenameOnError(NotClearsigned); |
| 1503 | |
| 1504 | return true; |
| 1505 | } |
| 1506 | /*}}}*/ |
| 1507 | // pkgAcqMetaClearSig::Done - We got a file /*{{{*/ |
| 1508 | void pkgAcqMetaClearSig::Done(std::string const &Message, |
| 1509 | HashStringList const &Hashes, |
| 1510 | pkgAcquire::MethodConfig const * const Cnf) |
| 1511 | { |
| 1512 | Item::Done(Message, Hashes, Cnf); |
| 1513 | |
| 1514 | if(AuthPass == false) |
| 1515 | { |
| 1516 | if(CheckDownloadDone(this, Message, Hashes) == true) |
| 1517 | QueueForSignatureVerify(this, DestFile, DestFile); |
| 1518 | return; |
| 1519 | } |
| 1520 | else if(CheckAuthDone(Message) == true) |
| 1521 | { |
| 1522 | if (TransactionManager->IMSHit == false) |
| 1523 | TransactionManager->TransactionStageCopy(this, DestFile, GetFinalFilename()); |
| 1524 | else if (RealFileExists(GetFinalFilename()) == false) |
| 1525 | { |
| 1526 | // We got an InRelease file IMSHit, but we haven't one, which means |
| 1527 | // we had a valid Release/Release.gpg combo stepping in, which we have |
| 1528 | // to 'acquire' now to ensure list cleanup isn't removing them |
| 1529 | new NoActionItem(Owner, DetachedDataTarget); |
| 1530 | new NoActionItem(Owner, DetachedSigTarget); |
| 1531 | } |
| 1532 | } |
| 1533 | } |
| 1534 | /*}}}*/ |
| 1535 | void pkgAcqMetaClearSig::Failed(string const &Message,pkgAcquire::MethodConfig const * const Cnf) /*{{{*/ |
| 1536 | { |
| 1537 | Item::Failed(Message, Cnf); |
| 1538 | |
| 1539 | if (AuthPass == false) |
| 1540 | { |
| 1541 | if (Status == StatAuthError || Status == StatTransientNetworkError) |
| 1542 | { |
| 1543 | // if we expected a ClearTextSignature (InRelease) but got a network |
| 1544 | // error or got a file, but it wasn't valid, we end up here (see VerifyDone). |
| 1545 | // As these is usually called by web-portals we do not try Release/Release.gpg |
| 1546 | // as this is gonna fail anyway and instead abort our try (LP#346386) |
| 1547 | TransactionManager->AbortTransaction(); |
| 1548 | return; |
| 1549 | } |
| 1550 | |
| 1551 | // Queue the 'old' InRelease file for removal if we try Release.gpg |
| 1552 | // as otherwise the file will stay around and gives a false-auth |
| 1553 | // impression (CVE-2012-0214) |
| 1554 | TransactionManager->TransactionStageRemoval(this, GetFinalFilename()); |
| 1555 | Status = StatDone; |
| 1556 | |
| 1557 | new pkgAcqMetaIndex(Owner, TransactionManager, DetachedDataTarget, DetachedSigTarget); |
| 1558 | } |
| 1559 | else |
| 1560 | { |
| 1561 | if(CheckStopAuthentication(this, Message)) |
| 1562 | return; |
| 1563 | |
| 1564 | // No Release file was present, or verification failed, so fall |
| 1565 | // back to queueing Packages files without verification |
| 1566 | // only allow going further if the user explicitly wants it |
| 1567 | if(AllowInsecureRepositories(_("The repository '%s' is not signed."), ClearsignedTarget.Description, TransactionManager->MetaIndexParser, TransactionManager, this) == true) |
| 1568 | { |
| 1569 | Status = StatDone; |
| 1570 | |
| 1571 | /* InRelease files become Release files, otherwise |
| 1572 | * they would be considered as trusted later on */ |
| 1573 | string const FinalRelease = GetFinalFileNameFromURI(DetachedDataTarget.URI); |
| 1574 | string const PartialRelease = GetPartialFileNameFromURI(DetachedDataTarget.URI); |
| 1575 | string const FinalReleasegpg = GetFinalFileNameFromURI(DetachedSigTarget.URI); |
| 1576 | string const FinalInRelease = GetFinalFilename(); |
| 1577 | Rename(DestFile, PartialRelease); |
| 1578 | TransactionManager->TransactionStageCopy(this, PartialRelease, FinalRelease); |
| 1579 | LoadLastMetaIndexParser(TransactionManager, FinalRelease, FinalInRelease); |
| 1580 | |
| 1581 | // we parse the indexes here because at this point the user wanted |
| 1582 | // a repository that may potentially harm him |
| 1583 | if (TransactionManager->MetaIndexParser->Load(PartialRelease, &ErrorText) == false || VerifyVendor(Message) == false) |
| 1584 | /* expired Release files are still a problem you need extra force for */; |
| 1585 | else |
| 1586 | TransactionManager->QueueIndexes(true); |
| 1587 | } |
| 1588 | } |
| 1589 | } |
| 1590 | /*}}}*/ |
| 1591 | |
| 1592 | pkgAcqMetaIndex::pkgAcqMetaIndex(pkgAcquire * const Owner, /*{{{*/ |
| 1593 | pkgAcqMetaClearSig * const TransactionManager, |
| 1594 | IndexTarget const &DataTarget, |
| 1595 | IndexTarget const &DetachedSigTarget) : |
| 1596 | pkgAcqMetaBase(Owner, TransactionManager, DataTarget), d(NULL), |
| 1597 | DetachedSigTarget(DetachedSigTarget) |
| 1598 | { |
| 1599 | if(_config->FindB("Debug::Acquire::Transaction", false) == true) |
| 1600 | std::clog << "New pkgAcqMetaIndex with TransactionManager " |
| 1601 | << this->TransactionManager << std::endl; |
| 1602 | |
| 1603 | DestFile = GetPartialFileNameFromURI(DataTarget.URI); |
| 1604 | |
| 1605 | // Create the item |
| 1606 | Desc.Description = DataTarget.Description; |
| 1607 | Desc.Owner = this; |
| 1608 | Desc.ShortDesc = DataTarget.ShortDesc; |
| 1609 | Desc.URI = DataTarget.URI; |
| 1610 | QueueURI(Desc); |
| 1611 | } |
| 1612 | /*}}}*/ |
| 1613 | void pkgAcqMetaIndex::Done(string const &Message, /*{{{*/ |
| 1614 | HashStringList const &Hashes, |
| 1615 | pkgAcquire::MethodConfig const * const Cfg) |
| 1616 | { |
| 1617 | Item::Done(Message,Hashes,Cfg); |
| 1618 | |
| 1619 | if(CheckDownloadDone(this, Message, Hashes)) |
| 1620 | { |
| 1621 | // we have a Release file, now download the Signature, all further |
| 1622 | // verify/queue for additional downloads will be done in the |
| 1623 | // pkgAcqMetaSig::Done() code |
| 1624 | new pkgAcqMetaSig(Owner, TransactionManager, DetachedSigTarget, this); |
| 1625 | } |
| 1626 | } |
| 1627 | /*}}}*/ |
| 1628 | // pkgAcqMetaIndex::Failed - no Release file present /*{{{*/ |
| 1629 | void pkgAcqMetaIndex::Failed(string const &Message, |
| 1630 | pkgAcquire::MethodConfig const * const Cnf) |
| 1631 | { |
| 1632 | pkgAcquire::Item::Failed(Message, Cnf); |
| 1633 | Status = StatDone; |
| 1634 | |
| 1635 | // No Release file was present so fall |
| 1636 | // back to queueing Packages files without verification |
| 1637 | // only allow going further if the user explicitly wants it |
| 1638 | if(AllowInsecureRepositories(_("The repository '%s' does not have a Release file."), Target.Description, TransactionManager->MetaIndexParser, TransactionManager, this) == true) |
| 1639 | { |
| 1640 | // ensure old Release files are removed |
| 1641 | TransactionManager->TransactionStageRemoval(this, GetFinalFilename()); |
| 1642 | |
| 1643 | // queue without any kind of hashsum support |
| 1644 | TransactionManager->QueueIndexes(false); |
| 1645 | } |
| 1646 | } |
| 1647 | /*}}}*/ |
| 1648 | std::string pkgAcqMetaIndex::DescURI() const /*{{{*/ |
| 1649 | { |
| 1650 | return Target.URI; |
| 1651 | } |
| 1652 | /*}}}*/ |
| 1653 | pkgAcqMetaIndex::~pkgAcqMetaIndex() {} |
| 1654 | |
| 1655 | // AcqMetaSig::AcqMetaSig - Constructor /*{{{*/ |
| 1656 | pkgAcqMetaSig::pkgAcqMetaSig(pkgAcquire * const Owner, |
| 1657 | pkgAcqMetaClearSig * const TransactionManager, |
| 1658 | IndexTarget const &Target, |
| 1659 | pkgAcqMetaIndex * const MetaIndex) : |
| 1660 | pkgAcqTransactionItem(Owner, TransactionManager, Target), d(NULL), MetaIndex(MetaIndex) |
| 1661 | { |
| 1662 | DestFile = GetPartialFileNameFromURI(Target.URI); |
| 1663 | |
| 1664 | // remove any partial downloaded sig-file in partial/. |
| 1665 | // it may confuse proxies and is too small to warrant a |
| 1666 | // partial download anyway |
| 1667 | RemoveFile("pkgAcqMetaSig", DestFile); |
| 1668 | |
| 1669 | // set the TransactionManager |
| 1670 | if(_config->FindB("Debug::Acquire::Transaction", false) == true) |
| 1671 | std::clog << "New pkgAcqMetaSig with TransactionManager " |
| 1672 | << TransactionManager << std::endl; |
| 1673 | |
| 1674 | // Create the item |
| 1675 | Desc.Description = Target.Description; |
| 1676 | Desc.Owner = this; |
| 1677 | Desc.ShortDesc = Target.ShortDesc; |
| 1678 | Desc.URI = Target.URI; |
| 1679 | |
| 1680 | // If we got a hit for Release, we will get one for Release.gpg too (or obscure errors), |
| 1681 | // so we skip the download step and go instantly to verification |
| 1682 | if (TransactionManager->IMSHit == true && RealFileExists(GetFinalFilename())) |
| 1683 | { |
| 1684 | Complete = true; |
| 1685 | Status = StatDone; |
| 1686 | PartialFile = DestFile = GetFinalFilename(); |
| 1687 | MetaIndexFileSignature = DestFile; |
| 1688 | MetaIndex->QueueForSignatureVerify(this, MetaIndex->DestFile, DestFile); |
| 1689 | } |
| 1690 | else |
| 1691 | QueueURI(Desc); |
| 1692 | } |
| 1693 | /*}}}*/ |
| 1694 | pkgAcqMetaSig::~pkgAcqMetaSig() /*{{{*/ |
| 1695 | { |
| 1696 | } |
| 1697 | /*}}}*/ |
| 1698 | // pkgAcqMetaSig::Custom600Headers - Insert custom request headers /*{{{*/ |
| 1699 | std::string pkgAcqMetaSig::Custom600Headers() const |
| 1700 | { |
| 1701 | std::string Header = pkgAcqTransactionItem::Custom600Headers(); |
| 1702 | std::string const key = TransactionManager->MetaIndexParser->GetSignedBy(); |
| 1703 | if (key.empty() == false) |
| 1704 | Header += "\nSigned-By: " + key; |
| 1705 | return Header; |
| 1706 | } |
| 1707 | /*}}}*/ |
| 1708 | // AcqMetaSig::Done - The signature was downloaded/verified /*{{{*/ |
| 1709 | void pkgAcqMetaSig::Done(string const &Message, HashStringList const &Hashes, |
| 1710 | pkgAcquire::MethodConfig const * const Cfg) |
| 1711 | { |
| 1712 | if (MetaIndexFileSignature.empty() == false) |
| 1713 | { |
| 1714 | DestFile = MetaIndexFileSignature; |
| 1715 | MetaIndexFileSignature.clear(); |
| 1716 | } |
| 1717 | Item::Done(Message, Hashes, Cfg); |
| 1718 | |
| 1719 | if(MetaIndex->AuthPass == false) |
| 1720 | { |
| 1721 | if(MetaIndex->CheckDownloadDone(this, Message, Hashes) == true) |
| 1722 | { |
| 1723 | // destfile will be modified to point to MetaIndexFile for the |
| 1724 | // gpgv method, so we need to save it here |
| 1725 | MetaIndexFileSignature = DestFile; |
| 1726 | MetaIndex->QueueForSignatureVerify(this, MetaIndex->DestFile, DestFile); |
| 1727 | } |
| 1728 | return; |
| 1729 | } |
| 1730 | else if(MetaIndex->CheckAuthDone(Message) == true) |
| 1731 | { |
| 1732 | if (TransactionManager->IMSHit == false) |
| 1733 | { |
| 1734 | TransactionManager->TransactionStageCopy(this, DestFile, GetFinalFilename()); |
| 1735 | TransactionManager->TransactionStageCopy(MetaIndex, MetaIndex->DestFile, MetaIndex->GetFinalFilename()); |
| 1736 | } |
| 1737 | } |
| 1738 | } |
| 1739 | /*}}}*/ |
| 1740 | void pkgAcqMetaSig::Failed(string const &Message,pkgAcquire::MethodConfig const * const Cnf)/*{{{*/ |
| 1741 | { |
| 1742 | Item::Failed(Message,Cnf); |
| 1743 | |
| 1744 | // check if we need to fail at this point |
| 1745 | if (MetaIndex->AuthPass == true && MetaIndex->CheckStopAuthentication(this, Message)) |
| 1746 | return; |
| 1747 | |
| 1748 | string const FinalRelease = MetaIndex->GetFinalFilename(); |
| 1749 | string const FinalReleasegpg = GetFinalFilename(); |
| 1750 | string const FinalInRelease = TransactionManager->GetFinalFilename(); |
| 1751 | |
| 1752 | if (RealFileExists(FinalReleasegpg) || RealFileExists(FinalInRelease)) |
| 1753 | { |
| 1754 | std::string downgrade_msg; |
| 1755 | strprintf(downgrade_msg, _("The repository '%s' is no longer signed."), |
| 1756 | MetaIndex->Target.Description.c_str()); |
| 1757 | if(_config->FindB("Acquire::AllowDowngradeToInsecureRepositories")) |
| 1758 | { |
| 1759 | // meh, the users wants to take risks (we still mark the packages |
| 1760 | // from this repository as unauthenticated) |
| 1761 | _error->Warning("%s", downgrade_msg.c_str()); |
| 1762 | _error->Warning(_("This is normally not allowed, but the option " |
| 1763 | "Acquire::AllowDowngradeToInsecureRepositories was " |
| 1764 | "given to override it.")); |
| 1765 | Status = StatDone; |
| 1766 | } else { |
| 1767 | MessageInsecureRepository(true, downgrade_msg); |
| 1768 | if (TransactionManager->IMSHit == false) |
| 1769 | Rename(MetaIndex->DestFile, MetaIndex->DestFile + ".FAILED"); |
| 1770 | Item::Failed("Message: " + downgrade_msg, Cnf); |
| 1771 | TransactionManager->AbortTransaction(); |
| 1772 | return; |
| 1773 | } |
| 1774 | } |
| 1775 | |
| 1776 | // ensures that a Release.gpg file in the lists/ is removed by the transaction |
| 1777 | TransactionManager->TransactionStageRemoval(this, DestFile); |
| 1778 | |
| 1779 | // only allow going further if the user explicitly wants it |
| 1780 | if (AllowInsecureRepositories(_("The repository '%s' is not signed."), MetaIndex->Target.Description, TransactionManager->MetaIndexParser, TransactionManager, this) == true) |
| 1781 | { |
| 1782 | LoadLastMetaIndexParser(TransactionManager, FinalRelease, FinalInRelease); |
| 1783 | |
| 1784 | // we parse the indexes here because at this point the user wanted |
| 1785 | // a repository that may potentially harm him |
| 1786 | bool const GoodLoad = TransactionManager->MetaIndexParser->Load(MetaIndex->DestFile, &ErrorText); |
| 1787 | if (MetaIndex->VerifyVendor(Message) == false) |
| 1788 | /* expired Release files are still a problem you need extra force for */; |
| 1789 | else |
| 1790 | TransactionManager->QueueIndexes(GoodLoad); |
| 1791 | |
| 1792 | TransactionManager->TransactionStageCopy(MetaIndex, MetaIndex->DestFile, MetaIndex->GetFinalFilename()); |
| 1793 | } |
| 1794 | |
| 1795 | // FIXME: this is used often (e.g. in pkgAcqIndexTrans) so refactor |
| 1796 | if (Cnf->LocalOnly == true || |
| 1797 | StringToBool(LookupTag(Message,"Transient-Failure"),false) == false) |
| 1798 | { |
| 1799 | // Ignore this |
| 1800 | Status = StatDone; |
| 1801 | } |
| 1802 | } |
| 1803 | /*}}}*/ |
| 1804 | |
| 1805 | |
| 1806 | // AcqBaseIndex - Constructor /*{{{*/ |
| 1807 | pkgAcqBaseIndex::pkgAcqBaseIndex(pkgAcquire * const Owner, |
| 1808 | pkgAcqMetaClearSig * const TransactionManager, |
| 1809 | IndexTarget const &Target) |
| 1810 | : pkgAcqTransactionItem(Owner, TransactionManager, Target), d(NULL) |
| 1811 | { |
| 1812 | } |
| 1813 | /*}}}*/ |
| 1814 | void pkgAcqBaseIndex::Failed(std::string const &Message,pkgAcquire::MethodConfig const * const Cnf)/*{{{*/ |
| 1815 | { |
| 1816 | pkgAcquire::Item::Failed(Message, Cnf); |
| 1817 | if (Status != StatAuthError) |
| 1818 | return; |
| 1819 | |
| 1820 | ErrorText.append("Release file created at: "); |
| 1821 | auto const timespec = TransactionManager->MetaIndexParser->GetDate(); |
| 1822 | if (timespec == 0) |
| 1823 | ErrorText.append("<unknown>"); |
| 1824 | else |
| 1825 | ErrorText.append(TimeRFC1123(timespec)); |
| 1826 | ErrorText.append("\n"); |
| 1827 | } |
| 1828 | /*}}}*/ |
| 1829 | pkgAcqBaseIndex::~pkgAcqBaseIndex() {} |
| 1830 | |
| 1831 | // AcqDiffIndex::AcqDiffIndex - Constructor /*{{{*/ |
| 1832 | // --------------------------------------------------------------------- |
| 1833 | /* Get the DiffIndex file first and see if there are patches available |
| 1834 | * If so, create a pkgAcqIndexDiffs fetcher that will get and apply the |
| 1835 | * patches. If anything goes wrong in that process, it will fall back to |
| 1836 | * the original packages file |
| 1837 | */ |
| 1838 | pkgAcqDiffIndex::pkgAcqDiffIndex(pkgAcquire * const Owner, |
| 1839 | pkgAcqMetaClearSig * const TransactionManager, |
| 1840 | IndexTarget const &Target) |
| 1841 | : pkgAcqBaseIndex(Owner, TransactionManager, Target), d(NULL), diffs(NULL) |
| 1842 | { |
| 1843 | // FIXME: Magic number as an upper bound on pdiffs we will reasonably acquire |
| 1844 | ExpectedAdditionalItems = 40; |
| 1845 | |
| 1846 | Debug = _config->FindB("Debug::pkgAcquire::Diffs",false); |
| 1847 | |
| 1848 | Desc.Owner = this; |
| 1849 | Desc.Description = GetDiffIndexFileName(Target.Description); |
| 1850 | Desc.ShortDesc = Target.ShortDesc; |
| 1851 | Desc.URI = GetDiffIndexURI(Target); |
| 1852 | |
| 1853 | DestFile = GetPartialFileNameFromURI(Desc.URI); |
| 1854 | |
| 1855 | if(Debug) |
| 1856 | std::clog << "pkgAcqDiffIndex: " << Desc.URI << std::endl; |
| 1857 | |
| 1858 | QueueURI(Desc); |
| 1859 | } |
| 1860 | /*}}}*/ |
| 1861 | // AcqIndex::Custom600Headers - Insert custom request headers /*{{{*/ |
| 1862 | // --------------------------------------------------------------------- |
| 1863 | /* The only header we use is the last-modified header. */ |
| 1864 | string pkgAcqDiffIndex::Custom600Headers() const |
| 1865 | { |
| 1866 | if (TransactionManager->LastMetaIndexParser != NULL) |
| 1867 | return "\nIndex-File: true"; |
| 1868 | |
| 1869 | string const Final = GetFinalFilename(); |
| 1870 | |
| 1871 | if(Debug) |
| 1872 | std::clog << "Custom600Header-IMS: " << Final << std::endl; |
| 1873 | |
| 1874 | struct stat Buf; |
| 1875 | if (stat(Final.c_str(),&Buf) != 0) |
| 1876 | return "\nIndex-File: true"; |
| 1877 | |
| 1878 | return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime); |
| 1879 | } |
| 1880 | /*}}}*/ |
| 1881 | void pkgAcqDiffIndex::QueueOnIMSHit() const /*{{{*/ |
| 1882 | { |
| 1883 | // list cleanup needs to know that this file as well as the already |
| 1884 | // present index is ours, so we create an empty diff to save it for us |
| 1885 | new pkgAcqIndexDiffs(Owner, TransactionManager, Target); |
| 1886 | } |
| 1887 | /*}}}*/ |
| 1888 | bool pkgAcqDiffIndex::ParseDiffIndex(string const &IndexDiffFile) /*{{{*/ |
| 1889 | { |
| 1890 | ExpectedAdditionalItems = 0; |
| 1891 | // failing here is fine: our caller will take care of trying to |
| 1892 | // get the complete file if patching fails |
| 1893 | if(Debug) |
| 1894 | std::clog << "pkgAcqDiffIndex::ParseIndexDiff() " << IndexDiffFile |
| 1895 | << std::endl; |
| 1896 | |
| 1897 | FileFd Fd(IndexDiffFile,FileFd::ReadOnly); |
| 1898 | pkgTagFile TF(&Fd); |
| 1899 | if (Fd.IsOpen() == false || Fd.Failed()) |
| 1900 | return false; |
| 1901 | |
| 1902 | pkgTagSection Tags; |
| 1903 | if(unlikely(TF.Step(Tags) == false)) |
| 1904 | return false; |
| 1905 | |
| 1906 | HashStringList ServerHashes; |
| 1907 | unsigned long long ServerSize = 0; |
| 1908 | |
| 1909 | for (char const * const * type = HashString::SupportedHashes(); *type != NULL; ++type) |
| 1910 | { |
| 1911 | std::string tagname = *type; |
| 1912 | tagname.append("-Current"); |
| 1913 | std::string const tmp = Tags.FindS(tagname.c_str()); |
| 1914 | if (tmp.empty() == true) |
| 1915 | continue; |
| 1916 | |
| 1917 | string hash; |
| 1918 | unsigned long long size; |
| 1919 | std::stringstream ss(tmp); |
| 1920 | ss >> hash >> size; |
| 1921 | if (unlikely(hash.empty() == true)) |
| 1922 | continue; |
| 1923 | if (unlikely(ServerSize != 0 && ServerSize != size)) |
| 1924 | continue; |
| 1925 | ServerHashes.push_back(HashString(*type, hash)); |
| 1926 | ServerSize = size; |
| 1927 | } |
| 1928 | |
| 1929 | if (ServerHashes.usable() == false) |
| 1930 | { |
| 1931 | if (Debug == true) |
| 1932 | std::clog << "pkgAcqDiffIndex: " << IndexDiffFile << ": Did not find a good hashsum in the index" << std::endl; |
| 1933 | return false; |
| 1934 | } |
| 1935 | |
| 1936 | std::string const CurrentPackagesFile = GetFinalFileNameFromURI(Target.URI); |
| 1937 | HashStringList const TargetFileHashes = GetExpectedHashesFor(Target.MetaKey); |
| 1938 | if (TargetFileHashes.usable() == false || ServerHashes != TargetFileHashes) |
| 1939 | { |
| 1940 | if (Debug == true) |
| 1941 | { |
| 1942 | std::clog << "pkgAcqDiffIndex: " << IndexDiffFile << ": Index has different hashes than parser, probably older, so fail pdiffing" << std::endl; |
| 1943 | printHashSumComparison(CurrentPackagesFile, ServerHashes, TargetFileHashes); |
| 1944 | } |
| 1945 | return false; |
| 1946 | } |
| 1947 | |
| 1948 | HashStringList LocalHashes; |
| 1949 | // try avoiding calculating the hash here as this is costly |
| 1950 | if (TransactionManager->LastMetaIndexParser != NULL) |
| 1951 | LocalHashes = GetExpectedHashesFromFor(TransactionManager->LastMetaIndexParser, Target.MetaKey); |
| 1952 | if (LocalHashes.usable() == false) |
| 1953 | { |
| 1954 | FileFd fd(CurrentPackagesFile, FileFd::ReadOnly, FileFd::Auto); |
| 1955 | Hashes LocalHashesCalc(ServerHashes); |
| 1956 | LocalHashesCalc.AddFD(fd); |
| 1957 | LocalHashes = LocalHashesCalc.GetHashStringList(); |
| 1958 | } |
| 1959 | |
| 1960 | if (ServerHashes == LocalHashes) |
| 1961 | { |
| 1962 | // we have the same sha1 as the server so we are done here |
| 1963 | if(Debug) |
| 1964 | std::clog << "pkgAcqDiffIndex: Package file " << CurrentPackagesFile << " is up-to-date" << std::endl; |
| 1965 | QueueOnIMSHit(); |
| 1966 | return true; |
| 1967 | } |
| 1968 | |
| 1969 | if(Debug) |
| 1970 | std::clog << "Server-Current: " << ServerHashes.find(NULL)->toStr() << " and we start at " |
| 1971 | << CurrentPackagesFile << " " << LocalHashes.FileSize() << " " << LocalHashes.find(NULL)->toStr() << std::endl; |
| 1972 | |
| 1973 | // historically, older hashes have more info than newer ones, so start |
| 1974 | // collecting with older ones first to avoid implementing complicated |
| 1975 | // information merging techniques… a failure is after all always |
| 1976 | // recoverable with a complete file and hashes aren't changed that often. |
| 1977 | std::vector<char const *> types; |
| 1978 | for (char const * const * type = HashString::SupportedHashes(); *type != NULL; ++type) |
| 1979 | types.push_back(*type); |
| 1980 | |
| 1981 | // parse all of (provided) history |
| 1982 | vector<DiffInfo> available_patches; |
| 1983 | bool firstAcceptedHashes = true; |
| 1984 | for (auto type = types.crbegin(); type != types.crend(); ++type) |
| 1985 | { |
| 1986 | if (LocalHashes.find(*type) == NULL) |
| 1987 | continue; |
| 1988 | |
| 1989 | std::string tagname = *type; |
| 1990 | tagname.append("-History"); |
| 1991 | std::string const tmp = Tags.FindS(tagname.c_str()); |
| 1992 | if (tmp.empty() == true) |
| 1993 | continue; |
| 1994 | |
| 1995 | string hash, filename; |
| 1996 | unsigned long long size; |
| 1997 | std::stringstream ss(tmp); |
| 1998 | |
| 1999 | while (ss >> hash >> size >> filename) |
| 2000 | { |
| 2001 | if (unlikely(hash.empty() == true || filename.empty() == true)) |
| 2002 | continue; |
| 2003 | |
| 2004 | // see if we have a record for this file already |
| 2005 | std::vector<DiffInfo>::iterator cur = available_patches.begin(); |
| 2006 | for (; cur != available_patches.end(); ++cur) |
| 2007 | { |
| 2008 | if (cur->file != filename) |
| 2009 | continue; |
| 2010 | cur->result_hashes.push_back(HashString(*type, hash)); |
| 2011 | break; |
| 2012 | } |
| 2013 | if (cur != available_patches.end()) |
| 2014 | continue; |
| 2015 | if (firstAcceptedHashes == true) |
| 2016 | { |
| 2017 | DiffInfo next; |
| 2018 | next.file = filename; |
| 2019 | next.result_hashes.push_back(HashString(*type, hash)); |
| 2020 | next.result_hashes.FileSize(size); |
| 2021 | available_patches.push_back(next); |
| 2022 | } |
| 2023 | else |
| 2024 | { |
| 2025 | if (Debug == true) |
| 2026 | std::clog << "pkgAcqDiffIndex: " << IndexDiffFile << ": File " << filename |
| 2027 | << " wasn't in the list for the first parsed hash! (history)" << std::endl; |
| 2028 | break; |
| 2029 | } |
| 2030 | } |
| 2031 | firstAcceptedHashes = false; |
| 2032 | } |
| 2033 | |
| 2034 | if (unlikely(available_patches.empty() == true)) |
| 2035 | { |
| 2036 | if (Debug) |
| 2037 | std::clog << "pkgAcqDiffIndex: " << IndexDiffFile << ": " |
| 2038 | << "Couldn't find any patches for the patch series." << std::endl; |
| 2039 | return false; |
| 2040 | } |
| 2041 | |
| 2042 | for (auto type = types.crbegin(); type != types.crend(); ++type) |
| 2043 | { |
| 2044 | if (LocalHashes.find(*type) == NULL) |
| 2045 | continue; |
| 2046 | |
| 2047 | std::string tagname = *type; |
| 2048 | tagname.append("-Patches"); |
| 2049 | std::string const tmp = Tags.FindS(tagname.c_str()); |
| 2050 | if (tmp.empty() == true) |
| 2051 | continue; |
| 2052 | |
| 2053 | string hash, filename; |
| 2054 | unsigned long long size; |
| 2055 | std::stringstream ss(tmp); |
| 2056 | |
| 2057 | while (ss >> hash >> size >> filename) |
| 2058 | { |
| 2059 | if (unlikely(hash.empty() == true || filename.empty() == true)) |
| 2060 | continue; |
| 2061 | |
| 2062 | // see if we have a record for this file already |
| 2063 | std::vector<DiffInfo>::iterator cur = available_patches.begin(); |
| 2064 | for (; cur != available_patches.end(); ++cur) |
| 2065 | { |
| 2066 | if (cur->file != filename) |
| 2067 | continue; |
| 2068 | if (cur->patch_hashes.empty()) |
| 2069 | cur->patch_hashes.FileSize(size); |
| 2070 | cur->patch_hashes.push_back(HashString(*type, hash)); |
| 2071 | break; |
| 2072 | } |
| 2073 | if (cur != available_patches.end()) |
| 2074 | continue; |
| 2075 | if (Debug == true) |
| 2076 | std::clog << "pkgAcqDiffIndex: " << IndexDiffFile << ": File " << filename |
| 2077 | << " wasn't in the list for the first parsed hash! (patches)" << std::endl; |
| 2078 | break; |
| 2079 | } |
| 2080 | } |
| 2081 | |
| 2082 | for (auto type = types.crbegin(); type != types.crend(); ++type) |
| 2083 | { |
| 2084 | std::string tagname = *type; |
| 2085 | tagname.append("-Download"); |
| 2086 | std::string const tmp = Tags.FindS(tagname.c_str()); |
| 2087 | if (tmp.empty() == true) |
| 2088 | continue; |
| 2089 | |
| 2090 | string hash, filename; |
| 2091 | unsigned long long size; |
| 2092 | std::stringstream ss(tmp); |
| 2093 | |
| 2094 | // FIXME: all of pdiff supports only .gz compressed patches |
| 2095 | while (ss >> hash >> size >> filename) |
| 2096 | { |
| 2097 | if (unlikely(hash.empty() == true || filename.empty() == true)) |
| 2098 | continue; |
| 2099 | if (unlikely(APT::String::Endswith(filename, ".gz") == false)) |
| 2100 | continue; |
| 2101 | filename.erase(filename.length() - 3); |
| 2102 | |
| 2103 | // see if we have a record for this file already |
| 2104 | std::vector<DiffInfo>::iterator cur = available_patches.begin(); |
| 2105 | for (; cur != available_patches.end(); ++cur) |
| 2106 | { |
| 2107 | if (cur->file != filename) |
| 2108 | continue; |
| 2109 | if (cur->download_hashes.empty()) |
| 2110 | cur->download_hashes.FileSize(size); |
| 2111 | cur->download_hashes.push_back(HashString(*type, hash)); |
| 2112 | break; |
| 2113 | } |
| 2114 | if (cur != available_patches.end()) |
| 2115 | continue; |
| 2116 | if (Debug == true) |
| 2117 | std::clog << "pkgAcqDiffIndex: " << IndexDiffFile << ": File " << filename |
| 2118 | << " wasn't in the list for the first parsed hash! (download)" << std::endl; |
| 2119 | break; |
| 2120 | } |
| 2121 | } |
| 2122 | |
| 2123 | |
| 2124 | bool foundStart = false; |
| 2125 | for (std::vector<DiffInfo>::iterator cur = available_patches.begin(); |
| 2126 | cur != available_patches.end(); ++cur) |
| 2127 | { |
| 2128 | if (LocalHashes != cur->result_hashes) |
| 2129 | continue; |
| 2130 | |
| 2131 | available_patches.erase(available_patches.begin(), cur); |
| 2132 | foundStart = true; |
| 2133 | break; |
| 2134 | } |
| 2135 | |
| 2136 | if (foundStart == false || unlikely(available_patches.empty() == true)) |
| 2137 | { |
| 2138 | if (Debug) |
| 2139 | std::clog << "pkgAcqDiffIndex: " << IndexDiffFile << ": " |
| 2140 | << "Couldn't find the start of the patch series." << std::endl; |
| 2141 | return false; |
| 2142 | } |
| 2143 | |
| 2144 | for (auto const &patch: available_patches) |
| 2145 | if (patch.result_hashes.usable() == false || |
| 2146 | patch.patch_hashes.usable() == false || |
| 2147 | patch.download_hashes.usable() == false) |
| 2148 | { |
| 2149 | if (Debug) |
| 2150 | std::clog << "pkgAcqDiffIndex: " << IndexDiffFile << ": provides no usable hashes for " << patch.file |
| 2151 | << " so fallback to complete download" << std::endl; |
| 2152 | return false; |
| 2153 | } |
| 2154 | |
| 2155 | // patching with too many files is rather slow compared to a fast download |
| 2156 | unsigned long const fileLimit = _config->FindI("Acquire::PDiffs::FileLimit", 0); |
| 2157 | if (fileLimit != 0 && fileLimit < available_patches.size()) |
| 2158 | { |
| 2159 | if (Debug) |
| 2160 | std::clog << "Need " << available_patches.size() << " diffs (Limit is " << fileLimit |
| 2161 | << ") so fallback to complete download" << std::endl; |
| 2162 | return false; |
| 2163 | } |
| 2164 | |
| 2165 | // calculate the size of all patches we have to get |
| 2166 | unsigned short const sizeLimitPercent = _config->FindI("Acquire::PDiffs::SizeLimit", 100); |
| 2167 | if (sizeLimitPercent > 0) |
| 2168 | { |
| 2169 | unsigned long long downloadSize = std::accumulate(available_patches.begin(), |
| 2170 | available_patches.end(), 0llu, [](unsigned long long const T, DiffInfo const &I) { |
| 2171 | return T + I.download_hashes.FileSize(); |
| 2172 | }); |
| 2173 | if (downloadSize != 0) |
| 2174 | { |
| 2175 | unsigned long long downloadSizeIdx = 0; |
| 2176 | auto const types = VectorizeString(Target.Option(IndexTarget::COMPRESSIONTYPES), ' '); |
| 2177 | for (auto const &t : types) |
| 2178 | { |
| 2179 | std::string MetaKey = Target.MetaKey; |
| 2180 | if (t != "uncompressed") |
| 2181 | MetaKey += '.' + t; |
| 2182 | HashStringList const hsl = GetExpectedHashesFor(MetaKey); |
| 2183 | if (unlikely(hsl.usable() == false)) |
| 2184 | continue; |
| 2185 | downloadSizeIdx = hsl.FileSize(); |
| 2186 | break; |
| 2187 | } |
| 2188 | unsigned long long const sizeLimit = downloadSizeIdx * sizeLimitPercent; |
| 2189 | if ((sizeLimit/100) < downloadSize) |
| 2190 | { |
| 2191 | if (Debug) |
| 2192 | std::clog << "Need " << downloadSize << " compressed bytes (Limit is " << (sizeLimit/100) << ", " |
| 2193 | << "original is " << downloadSizeIdx << ") so fallback to complete download" << std::endl; |
| 2194 | return false; |
| 2195 | } |
| 2196 | } |
| 2197 | } |
| 2198 | |
| 2199 | // we have something, queue the diffs |
| 2200 | string::size_type const last_space = Description.rfind(" "); |
| 2201 | if(last_space != string::npos) |
| 2202 | Description.erase(last_space, Description.size()-last_space); |
| 2203 | |
| 2204 | /* decide if we should download patches one by one or in one go: |
| 2205 | The first is good if the server merges patches, but many don't so client |
| 2206 | based merging can be attempt in which case the second is better. |
| 2207 | "bad things" will happen if patches are merged on the server, |
| 2208 | but client side merging is attempt as well */ |
| 2209 | bool pdiff_merge = _config->FindB("Acquire::PDiffs::Merge", true); |
| 2210 | if (pdiff_merge == true) |
| 2211 | { |
| 2212 | // reprepro adds this flag if it has merged patches on the server |
| 2213 | std::string const precedence = Tags.FindS("X-Patch-Precedence"); |
| 2214 | pdiff_merge = (precedence != "merged"); |
| 2215 | } |
| 2216 | |
| 2217 | // clean the plate |
| 2218 | { |
| 2219 | std::string const Final = GetExistingFilename(CurrentPackagesFile); |
| 2220 | if (unlikely(Final.empty())) // because we wouldn't be called in such a case |
| 2221 | return false; |
| 2222 | std::string const PartialFile = GetPartialFileNameFromURI(Target.URI); |
| 2223 | if (FileExists(PartialFile) && RemoveFile("Bootstrap-linking", PartialFile) == false) |
| 2224 | { |
| 2225 | if (Debug) |
| 2226 | std::clog << "Bootstrap-linking for patching " << CurrentPackagesFile |
| 2227 | << " by removing stale " << PartialFile << " failed!" << std::endl; |
| 2228 | return false; |
| 2229 | } |
| 2230 | for (auto const &ext : APT::Configuration::getCompressorExtensions()) |
| 2231 | { |
| 2232 | std::string const Partial = PartialFile + ext; |
| 2233 | if (FileExists(Partial) && RemoveFile("Bootstrap-linking", Partial) == false) |
| 2234 | { |
| 2235 | if (Debug) |
| 2236 | std::clog << "Bootstrap-linking for patching " << CurrentPackagesFile |
| 2237 | << " by removing stale " << Partial << " failed!" << std::endl; |
| 2238 | return false; |
| 2239 | } |
| 2240 | } |
| 2241 | std::string const Ext = Final.substr(CurrentPackagesFile.length()); |
| 2242 | std::string const Partial = PartialFile + Ext; |
| 2243 | if (symlink(Final.c_str(), Partial.c_str()) != 0) |
| 2244 | { |
| 2245 | if (Debug) |
| 2246 | std::clog << "Bootstrap-linking for patching " << CurrentPackagesFile |
| 2247 | << " by linking " << Final << " to " << Partial << " failed!" << std::endl; |
| 2248 | return false; |
| 2249 | } |
| 2250 | } |
| 2251 | |
| 2252 | if (pdiff_merge == false) |
| 2253 | new pkgAcqIndexDiffs(Owner, TransactionManager, Target, available_patches); |
| 2254 | else |
| 2255 | { |
| 2256 | diffs = new std::vector<pkgAcqIndexMergeDiffs*>(available_patches.size()); |
| 2257 | for(size_t i = 0; i < available_patches.size(); ++i) |
| 2258 | (*diffs)[i] = new pkgAcqIndexMergeDiffs(Owner, TransactionManager, |
| 2259 | Target, |
| 2260 | available_patches[i], |
| 2261 | diffs); |
| 2262 | } |
| 2263 | |
| 2264 | Complete = false; |
| 2265 | Status = StatDone; |
| 2266 | Dequeue(); |
| 2267 | return true; |
| 2268 | } |
| 2269 | /*}}}*/ |
| 2270 | void pkgAcqDiffIndex::Failed(string const &Message,pkgAcquire::MethodConfig const * const Cnf)/*{{{*/ |
| 2271 | { |
| 2272 | pkgAcqBaseIndex::Failed(Message,Cnf); |
| 2273 | Status = StatDone; |
| 2274 | ExpectedAdditionalItems = 0; |
| 2275 | |
| 2276 | if(Debug) |
| 2277 | std::clog << "pkgAcqDiffIndex failed: " << Desc.URI << " with " << Message << std::endl |
| 2278 | << "Falling back to normal index file acquire" << std::endl; |
| 2279 | |
| 2280 | new pkgAcqIndex(Owner, TransactionManager, Target); |
| 2281 | } |
| 2282 | /*}}}*/ |
| 2283 | void pkgAcqDiffIndex::Done(string const &Message,HashStringList const &Hashes, /*{{{*/ |
| 2284 | pkgAcquire::MethodConfig const * const Cnf) |
| 2285 | { |
| 2286 | if(Debug) |
| 2287 | std::clog << "pkgAcqDiffIndex::Done(): " << Desc.URI << std::endl; |
| 2288 | |
| 2289 | Item::Done(Message, Hashes, Cnf); |
| 2290 | |
| 2291 | string const FinalFile = GetFinalFilename(); |
| 2292 | if(StringToBool(LookupTag(Message,"IMS-Hit"),false)) |
| 2293 | DestFile = FinalFile; |
| 2294 | |
| 2295 | if(ParseDiffIndex(DestFile) == false) |
| 2296 | { |
| 2297 | Failed("Message: Couldn't parse pdiff index", Cnf); |
| 2298 | // queue for final move - this should happen even if we fail |
| 2299 | // while parsing (e.g. on sizelimit) and download the complete file. |
| 2300 | TransactionManager->TransactionStageCopy(this, DestFile, FinalFile); |
| 2301 | return; |
| 2302 | } |
| 2303 | |
| 2304 | TransactionManager->TransactionStageCopy(this, DestFile, FinalFile); |
| 2305 | |
| 2306 | Complete = true; |
| 2307 | Status = StatDone; |
| 2308 | Dequeue(); |
| 2309 | |
| 2310 | return; |
| 2311 | } |
| 2312 | /*}}}*/ |
| 2313 | pkgAcqDiffIndex::~pkgAcqDiffIndex() |
| 2314 | { |
| 2315 | if (diffs != NULL) |
| 2316 | delete diffs; |
| 2317 | } |
| 2318 | |
| 2319 | // AcqIndexDiffs::AcqIndexDiffs - Constructor /*{{{*/ |
| 2320 | // --------------------------------------------------------------------- |
| 2321 | /* The package diff is added to the queue. one object is constructed |
| 2322 | * for each diff and the index |
| 2323 | */ |
| 2324 | pkgAcqIndexDiffs::pkgAcqIndexDiffs(pkgAcquire * const Owner, |
| 2325 | pkgAcqMetaClearSig * const TransactionManager, |
| 2326 | IndexTarget const &Target, |
| 2327 | vector<DiffInfo> const &diffs) |
| 2328 | : pkgAcqBaseIndex(Owner, TransactionManager, Target), d(NULL), |
| 2329 | available_patches(diffs) |
| 2330 | { |
| 2331 | DestFile = GetKeepCompressedFileName(GetPartialFileNameFromURI(Target.URI), Target); |
| 2332 | |
| 2333 | Debug = _config->FindB("Debug::pkgAcquire::Diffs",false); |
| 2334 | |
| 2335 | Desc.Owner = this; |
| 2336 | Description = Target.Description; |
| 2337 | Desc.ShortDesc = Target.ShortDesc; |
| 2338 | |
| 2339 | if(available_patches.empty() == true) |
| 2340 | { |
| 2341 | // we are done (yeah!), check hashes against the final file |
| 2342 | DestFile = GetKeepCompressedFileName(GetFinalFileNameFromURI(Target.URI), Target); |
| 2343 | Finish(true); |
| 2344 | } |
| 2345 | else |
| 2346 | { |
| 2347 | State = StateFetchDiff; |
| 2348 | QueueNextDiff(); |
| 2349 | } |
| 2350 | } |
| 2351 | /*}}}*/ |
| 2352 | void pkgAcqIndexDiffs::Failed(string const &Message,pkgAcquire::MethodConfig const * const Cnf)/*{{{*/ |
| 2353 | { |
| 2354 | pkgAcqBaseIndex::Failed(Message,Cnf); |
| 2355 | Status = StatDone; |
| 2356 | |
| 2357 | DestFile = GetKeepCompressedFileName(GetPartialFileNameFromURI(Target.URI), Target); |
| 2358 | if(Debug) |
| 2359 | std::clog << "pkgAcqIndexDiffs failed: " << Desc.URI << " with " << Message << std::endl |
| 2360 | << "Falling back to normal index file acquire " << std::endl; |
| 2361 | RenameOnError(PDiffError); |
| 2362 | std::string const patchname = GetDiffsPatchFileName(DestFile); |
| 2363 | if (RealFileExists(patchname)) |
| 2364 | Rename(patchname, patchname + ".FAILED"); |
| 2365 | std::string const UnpatchedFile = GetExistingFilename(GetPartialFileNameFromURI(Target.URI)); |
| 2366 | if (UnpatchedFile.empty() == false && FileExists(UnpatchedFile)) |
| 2367 | Rename(UnpatchedFile, UnpatchedFile + ".FAILED"); |
| 2368 | new pkgAcqIndex(Owner, TransactionManager, Target); |
| 2369 | Finish(); |
| 2370 | } |
| 2371 | /*}}}*/ |
| 2372 | // Finish - helper that cleans the item out of the fetcher queue /*{{{*/ |
| 2373 | void pkgAcqIndexDiffs::Finish(bool allDone) |
| 2374 | { |
| 2375 | if(Debug) |
| 2376 | std::clog << "pkgAcqIndexDiffs::Finish(): " |
| 2377 | << allDone << " " |
| 2378 | << Desc.URI << std::endl; |
| 2379 | |
| 2380 | // we restore the original name, this is required, otherwise |
| 2381 | // the file will be cleaned |
| 2382 | if(allDone) |
| 2383 | { |
| 2384 | std::string const Final = GetKeepCompressedFileName(GetFinalFilename(), Target); |
| 2385 | TransactionManager->TransactionStageCopy(this, DestFile, Final); |
| 2386 | |
| 2387 | // this is for the "real" finish |
| 2388 | Complete = true; |
| 2389 | Status = StatDone; |
| 2390 | Dequeue(); |
| 2391 | if(Debug) |
| 2392 | std::clog << "\n\nallDone: " << DestFile << "\n" << std::endl; |
| 2393 | return; |
| 2394 | } |
| 2395 | else |
| 2396 | DestFile.clear(); |
| 2397 | |
| 2398 | if(Debug) |
| 2399 | std::clog << "Finishing: " << Desc.URI << std::endl; |
| 2400 | Complete = false; |
| 2401 | Status = StatDone; |
| 2402 | Dequeue(); |
| 2403 | return; |
| 2404 | } |
| 2405 | /*}}}*/ |
| 2406 | bool pkgAcqIndexDiffs::QueueNextDiff() /*{{{*/ |
| 2407 | { |
| 2408 | // calc sha1 of the just patched file |
| 2409 | std::string const PartialFile = GetExistingFilename(GetPartialFileNameFromURI(Target.URI)); |
| 2410 | if(unlikely(PartialFile.empty())) |
| 2411 | { |
| 2412 | Failed("Message: The file " + GetPartialFileNameFromURI(Target.URI) + " isn't available", NULL); |
| 2413 | return false; |
| 2414 | } |
| 2415 | |
| 2416 | FileFd fd(PartialFile, FileFd::ReadOnly, FileFd::Extension); |
| 2417 | Hashes LocalHashesCalc; |
| 2418 | LocalHashesCalc.AddFD(fd); |
| 2419 | HashStringList const LocalHashes = LocalHashesCalc.GetHashStringList(); |
| 2420 | |
| 2421 | if(Debug) |
| 2422 | std::clog << "QueueNextDiff: " << PartialFile << " (" << LocalHashes.find(NULL)->toStr() << ")" << std::endl; |
| 2423 | |
| 2424 | HashStringList const TargetFileHashes = GetExpectedHashesFor(Target.MetaKey); |
| 2425 | if (unlikely(LocalHashes.usable() == false || TargetFileHashes.usable() == false)) |
| 2426 | { |
| 2427 | Failed("Local/Expected hashes are not usable for " + PartialFile, NULL); |
| 2428 | return false; |
| 2429 | } |
| 2430 | |
| 2431 | // final file reached before all patches are applied |
| 2432 | if(LocalHashes == TargetFileHashes) |
| 2433 | { |
| 2434 | Finish(true); |
| 2435 | return true; |
| 2436 | } |
| 2437 | |
| 2438 | // remove all patches until the next matching patch is found |
| 2439 | // this requires the Index file to be ordered |
| 2440 | available_patches.erase(available_patches.begin(), |
| 2441 | std::find_if(available_patches.begin(), available_patches.end(), [&](DiffInfo const &I) { |
| 2442 | return I.result_hashes == LocalHashes; |
| 2443 | })); |
| 2444 | |
| 2445 | // error checking and falling back if no patch was found |
| 2446 | if(available_patches.empty() == true) |
| 2447 | { |
| 2448 | Failed("No patches left to reach target for " + PartialFile, NULL); |
| 2449 | return false; |
| 2450 | } |
| 2451 | |
| 2452 | // queue the right diff |
| 2453 | Desc.URI = Target.URI + ".diff/" + available_patches[0].file + ".gz"; |
| 2454 | Desc.Description = Description + " " + available_patches[0].file + string(".pdiff"); |
| 2455 | DestFile = GetKeepCompressedFileName(GetPartialFileNameFromURI(Target.URI + ".diff/" + available_patches[0].file), Target); |
| 2456 | |
| 2457 | if(Debug) |
| 2458 | std::clog << "pkgAcqIndexDiffs::QueueNextDiff(): " << Desc.URI << std::endl; |
| 2459 | |
| 2460 | QueueURI(Desc); |
| 2461 | |
| 2462 | return true; |
| 2463 | } |
| 2464 | /*}}}*/ |
| 2465 | void pkgAcqIndexDiffs::Done(string const &Message, HashStringList const &Hashes, /*{{{*/ |
| 2466 | pkgAcquire::MethodConfig const * const Cnf) |
| 2467 | { |
| 2468 | if (Debug) |
| 2469 | std::clog << "pkgAcqIndexDiffs::Done(): " << Desc.URI << std::endl; |
| 2470 | |
| 2471 | Item::Done(Message, Hashes, Cnf); |
| 2472 | |
| 2473 | std::string const UncompressedUnpatchedFile = GetPartialFileNameFromURI(Target.URI); |
| 2474 | std::string const UnpatchedFile = GetExistingFilename(UncompressedUnpatchedFile); |
| 2475 | std::string const PatchFile = GetDiffsPatchFileName(UnpatchedFile); |
| 2476 | std::string const PatchedFile = GetKeepCompressedFileName(UncompressedUnpatchedFile, Target); |
| 2477 | |
| 2478 | switch (State) |
| 2479 | { |
| 2480 | // success in downloading a diff, enter ApplyDiff state |
| 2481 | case StateFetchDiff: |
| 2482 | Rename(DestFile, PatchFile); |
| 2483 | DestFile = GetKeepCompressedFileName(UncompressedUnpatchedFile + "-patched", Target); |
| 2484 | if(Debug) |
| 2485 | std::clog << "Sending to rred method: " << UnpatchedFile << std::endl; |
| 2486 | State = StateApplyDiff; |
| 2487 | Local = true; |
| 2488 | Desc.URI = "rred:" + UnpatchedFile; |
| 2489 | QueueURI(Desc); |
| 2490 | SetActiveSubprocess("rred"); |
| 2491 | return; |
| 2492 | // success in download/apply a diff, queue next (if needed) |
| 2493 | case StateApplyDiff: |
| 2494 | // remove the just applied patch and base file |
| 2495 | available_patches.erase(available_patches.begin()); |
| 2496 | RemoveFile("pkgAcqIndexDiffs::Done", PatchFile); |
| 2497 | RemoveFile("pkgAcqIndexDiffs::Done", UnpatchedFile); |
| 2498 | if(Debug) |
| 2499 | std::clog << "Moving patched file in place: " << std::endl |
| 2500 | << DestFile << " -> " << PatchedFile << std::endl; |
| 2501 | Rename(DestFile, PatchedFile); |
| 2502 | |
| 2503 | // see if there is more to download |
| 2504 | if(available_patches.empty() == false) |
| 2505 | { |
| 2506 | new pkgAcqIndexDiffs(Owner, TransactionManager, Target, available_patches); |
| 2507 | Finish(); |
| 2508 | } else { |
| 2509 | DestFile = PatchedFile; |
| 2510 | Finish(true); |
| 2511 | } |
| 2512 | return; |
| 2513 | } |
| 2514 | } |
| 2515 | /*}}}*/ |
| 2516 | std::string pkgAcqIndexDiffs::Custom600Headers() const /*{{{*/ |
| 2517 | { |
| 2518 | if(State != StateApplyDiff) |
| 2519 | return pkgAcqBaseIndex::Custom600Headers(); |
| 2520 | std::ostringstream patchhashes; |
| 2521 | HashStringList const ExpectedHashes = available_patches[0].patch_hashes; |
| 2522 | for (HashStringList::const_iterator hs = ExpectedHashes.begin(); hs != ExpectedHashes.end(); ++hs) |
| 2523 | patchhashes << "\nPatch-0-" << hs->HashType() << "-Hash: " << hs->HashValue(); |
| 2524 | patchhashes << pkgAcqBaseIndex::Custom600Headers(); |
| 2525 | return patchhashes.str(); |
| 2526 | } |
| 2527 | /*}}}*/ |
| 2528 | pkgAcqIndexDiffs::~pkgAcqIndexDiffs() {} |
| 2529 | |
| 2530 | // AcqIndexMergeDiffs::AcqIndexMergeDiffs - Constructor /*{{{*/ |
| 2531 | pkgAcqIndexMergeDiffs::pkgAcqIndexMergeDiffs(pkgAcquire * const Owner, |
| 2532 | pkgAcqMetaClearSig * const TransactionManager, |
| 2533 | IndexTarget const &Target, |
| 2534 | DiffInfo const &patch, |
| 2535 | std::vector<pkgAcqIndexMergeDiffs*> const * const allPatches) |
| 2536 | : pkgAcqBaseIndex(Owner, TransactionManager, Target), d(NULL), |
| 2537 | patch(patch), allPatches(allPatches), State(StateFetchDiff) |
| 2538 | { |
| 2539 | Debug = _config->FindB("Debug::pkgAcquire::Diffs",false); |
| 2540 | |
| 2541 | Desc.Owner = this; |
| 2542 | Description = Target.Description; |
| 2543 | Desc.ShortDesc = Target.ShortDesc; |
| 2544 | Desc.URI = Target.URI + ".diff/" + patch.file + ".gz"; |
| 2545 | Desc.Description = Description + " " + patch.file + ".pdiff"; |
| 2546 | DestFile = GetPartialFileNameFromURI(Desc.URI); |
| 2547 | |
| 2548 | if(Debug) |
| 2549 | std::clog << "pkgAcqIndexMergeDiffs: " << Desc.URI << std::endl; |
| 2550 | |
| 2551 | QueueURI(Desc); |
| 2552 | } |
| 2553 | /*}}}*/ |
| 2554 | void pkgAcqIndexMergeDiffs::Failed(string const &Message,pkgAcquire::MethodConfig const * const Cnf)/*{{{*/ |
| 2555 | { |
| 2556 | if(Debug) |
| 2557 | std::clog << "pkgAcqIndexMergeDiffs failed: " << Desc.URI << " with " << Message << std::endl; |
| 2558 | |
| 2559 | pkgAcqBaseIndex::Failed(Message,Cnf); |
| 2560 | Status = StatDone; |
| 2561 | |
| 2562 | // check if we are the first to fail, otherwise we are done here |
| 2563 | State = StateDoneDiff; |
| 2564 | for (std::vector<pkgAcqIndexMergeDiffs *>::const_iterator I = allPatches->begin(); |
| 2565 | I != allPatches->end(); ++I) |
| 2566 | if ((*I)->State == StateErrorDiff) |
| 2567 | { |
| 2568 | State = StateErrorDiff; |
| 2569 | return; |
| 2570 | } |
| 2571 | |
| 2572 | // first failure means we should fallback |
| 2573 | State = StateErrorDiff; |
| 2574 | if (Debug) |
| 2575 | std::clog << "Falling back to normal index file acquire" << std::endl; |
| 2576 | RenameOnError(PDiffError); |
| 2577 | if (RealFileExists(DestFile)) |
| 2578 | Rename(DestFile, DestFile + ".FAILED"); |
| 2579 | std::string const UnpatchedFile = GetExistingFilename(GetPartialFileNameFromURI(Target.URI)); |
| 2580 | if (UnpatchedFile.empty() == false && FileExists(UnpatchedFile)) |
| 2581 | Rename(UnpatchedFile, UnpatchedFile + ".FAILED"); |
| 2582 | DestFile.clear(); |
| 2583 | new pkgAcqIndex(Owner, TransactionManager, Target); |
| 2584 | } |
| 2585 | /*}}}*/ |
| 2586 | void pkgAcqIndexMergeDiffs::Done(string const &Message, HashStringList const &Hashes, /*{{{*/ |
| 2587 | pkgAcquire::MethodConfig const * const Cnf) |
| 2588 | { |
| 2589 | if(Debug) |
| 2590 | std::clog << "pkgAcqIndexMergeDiffs::Done(): " << Desc.URI << std::endl; |
| 2591 | |
| 2592 | Item::Done(Message, Hashes, Cnf); |
| 2593 | |
| 2594 | if (std::any_of(allPatches->begin(), allPatches->end(), |
| 2595 | [](pkgAcqIndexMergeDiffs const * const P) { return P->State == StateErrorDiff; })) |
| 2596 | { |
| 2597 | if(Debug) |
| 2598 | std::clog << "Another patch failed already, no point in processing this one." << std::endl; |
| 2599 | State = StateErrorDiff; |
| 2600 | return; |
| 2601 | } |
| 2602 | |
| 2603 | std::string const UncompressedUnpatchedFile = GetPartialFileNameFromURI(Target.URI); |
| 2604 | std::string const UnpatchedFile = GetExistingFilename(UncompressedUnpatchedFile); |
| 2605 | if (UnpatchedFile.empty()) |
| 2606 | { |
| 2607 | _error->Fatal("Unpatched file %s doesn't exist (anymore)!", UncompressedUnpatchedFile.c_str()); |
| 2608 | State = StateErrorDiff; |
| 2609 | return; |
| 2610 | } |
| 2611 | std::string const PatchFile = GetMergeDiffsPatchFileName(UnpatchedFile, patch.file); |
| 2612 | std::string const PatchedFile = GetKeepCompressedFileName(UncompressedUnpatchedFile, Target); |
| 2613 | |
| 2614 | switch (State) |
| 2615 | { |
| 2616 | case StateFetchDiff: |
| 2617 | Rename(DestFile, PatchFile); |
| 2618 | |
| 2619 | // check if this is the last completed diff |
| 2620 | State = StateDoneDiff; |
| 2621 | for (std::vector<pkgAcqIndexMergeDiffs *>::const_iterator I = allPatches->begin(); |
| 2622 | I != allPatches->end(); ++I) |
| 2623 | if ((*I)->State != StateDoneDiff) |
| 2624 | { |
| 2625 | if(Debug) |
| 2626 | std::clog << "Not the last done diff in the batch: " << Desc.URI << std::endl; |
| 2627 | return; |
| 2628 | } |
| 2629 | // this is the last completed diff, so we are ready to apply now |
| 2630 | DestFile = GetKeepCompressedFileName(UncompressedUnpatchedFile + "-patched", Target); |
| 2631 | if(Debug) |
| 2632 | std::clog << "Sending to rred method: " << UnpatchedFile << std::endl; |
| 2633 | State = StateApplyDiff; |
| 2634 | Local = true; |
| 2635 | Desc.URI = "rred:" + UnpatchedFile; |
| 2636 | QueueURI(Desc); |
| 2637 | SetActiveSubprocess("rred"); |
| 2638 | return; |
| 2639 | case StateApplyDiff: |
| 2640 | // success in download & apply all diffs, finialize and clean up |
| 2641 | if(Debug) |
| 2642 | std::clog << "Queue patched file in place: " << std::endl |
| 2643 | << DestFile << " -> " << PatchedFile << std::endl; |
| 2644 | |
| 2645 | // queue for copy by the transaction manager |
| 2646 | TransactionManager->TransactionStageCopy(this, DestFile, GetKeepCompressedFileName(GetFinalFilename(), Target)); |
| 2647 | |
| 2648 | // ensure the ed's are gone regardless of list-cleanup |
| 2649 | for (std::vector<pkgAcqIndexMergeDiffs *>::const_iterator I = allPatches->begin(); |
| 2650 | I != allPatches->end(); ++I) |
| 2651 | RemoveFile("pkgAcqIndexMergeDiffs::Done", GetMergeDiffsPatchFileName(UnpatchedFile, (*I)->patch.file)); |
| 2652 | RemoveFile("pkgAcqIndexMergeDiffs::Done", UnpatchedFile); |
| 2653 | |
| 2654 | // all set and done |
| 2655 | Complete = true; |
| 2656 | if(Debug) |
| 2657 | std::clog << "allDone: " << DestFile << "\n" << std::endl; |
| 2658 | return; |
| 2659 | case StateDoneDiff: _error->Fatal("Done called for %s which is in an invalid Done state", PatchFile.c_str()); break; |
| 2660 | case StateErrorDiff: _error->Fatal("Done called for %s which is in an invalid Error state", PatchFile.c_str()); break; |
| 2661 | } |
| 2662 | } |
| 2663 | /*}}}*/ |
| 2664 | std::string pkgAcqIndexMergeDiffs::Custom600Headers() const /*{{{*/ |
| 2665 | { |
| 2666 | if(State != StateApplyDiff) |
| 2667 | return pkgAcqBaseIndex::Custom600Headers(); |
| 2668 | std::ostringstream patchhashes; |
| 2669 | unsigned int seen_patches = 0; |
| 2670 | for (std::vector<pkgAcqIndexMergeDiffs *>::const_iterator I = allPatches->begin(); |
| 2671 | I != allPatches->end(); ++I) |
| 2672 | { |
| 2673 | HashStringList const ExpectedHashes = (*I)->patch.patch_hashes; |
| 2674 | for (HashStringList::const_iterator hs = ExpectedHashes.begin(); hs != ExpectedHashes.end(); ++hs) |
| 2675 | patchhashes << "\nPatch-" << seen_patches << "-" << hs->HashType() << "-Hash: " << hs->HashValue(); |
| 2676 | ++seen_patches; |
| 2677 | } |
| 2678 | patchhashes << pkgAcqBaseIndex::Custom600Headers(); |
| 2679 | return patchhashes.str(); |
| 2680 | } |
| 2681 | /*}}}*/ |
| 2682 | pkgAcqIndexMergeDiffs::~pkgAcqIndexMergeDiffs() {} |
| 2683 | |
| 2684 | // AcqIndex::AcqIndex - Constructor /*{{{*/ |
| 2685 | pkgAcqIndex::pkgAcqIndex(pkgAcquire * const Owner, |
| 2686 | pkgAcqMetaClearSig * const TransactionManager, |
| 2687 | IndexTarget const &Target) |
| 2688 | : pkgAcqBaseIndex(Owner, TransactionManager, Target), d(NULL), Stage(STAGE_DOWNLOAD), |
| 2689 | CompressionExtensions(Target.Option(IndexTarget::COMPRESSIONTYPES)) |
| 2690 | { |
| 2691 | Init(Target.URI, Target.Description, Target.ShortDesc); |
| 2692 | |
| 2693 | if(_config->FindB("Debug::Acquire::Transaction", false) == true) |
| 2694 | std::clog << "New pkgIndex with TransactionManager " |
| 2695 | << TransactionManager << std::endl; |
| 2696 | } |
| 2697 | /*}}}*/ |
| 2698 | // AcqIndex::Init - defered Constructor /*{{{*/ |
| 2699 | static void NextCompressionExtension(std::string &CurrentCompressionExtension, std::string &CompressionExtensions, bool const preview) |
| 2700 | { |
| 2701 | size_t const nextExt = CompressionExtensions.find(' '); |
| 2702 | if (nextExt == std::string::npos) |
| 2703 | { |
| 2704 | CurrentCompressionExtension = CompressionExtensions; |
| 2705 | if (preview == false) |
| 2706 | CompressionExtensions.clear(); |
| 2707 | } |
| 2708 | else |
| 2709 | { |
| 2710 | CurrentCompressionExtension = CompressionExtensions.substr(0, nextExt); |
| 2711 | if (preview == false) |
| 2712 | CompressionExtensions = CompressionExtensions.substr(nextExt+1); |
| 2713 | } |
| 2714 | } |
| 2715 | void pkgAcqIndex::Init(string const &URI, string const &URIDesc, |
| 2716 | string const &ShortDesc) |
| 2717 | { |
| 2718 | Stage = STAGE_DOWNLOAD; |
| 2719 | |
| 2720 | DestFile = GetPartialFileNameFromURI(URI); |
| 2721 | NextCompressionExtension(CurrentCompressionExtension, CompressionExtensions, false); |
| 2722 | |
| 2723 | // store file size of the download to ensure the fetcher gives |
| 2724 | // accurate progress reporting |
| 2725 | FileSize = GetExpectedHashes().FileSize(); |
| 2726 | |
| 2727 | if (CurrentCompressionExtension == "uncompressed") |
| 2728 | { |
| 2729 | Desc.URI = URI; |
| 2730 | } |
| 2731 | else if (CurrentCompressionExtension == "by-hash") |
| 2732 | { |
| 2733 | NextCompressionExtension(CurrentCompressionExtension, CompressionExtensions, true); |
| 2734 | if(unlikely(CurrentCompressionExtension.empty())) |
| 2735 | return; |
| 2736 | if (CurrentCompressionExtension != "uncompressed") |
| 2737 | { |
| 2738 | Desc.URI = URI + '.' + CurrentCompressionExtension; |
| 2739 | DestFile = DestFile + '.' + CurrentCompressionExtension; |
| 2740 | } |
| 2741 | |
| 2742 | HashStringList const Hashes = GetExpectedHashes(); |
| 2743 | HashString const * const TargetHash = Hashes.find(NULL); |
| 2744 | if (unlikely(TargetHash == nullptr)) |
| 2745 | return; |
| 2746 | std::string const ByHash = "/by-hash/" + TargetHash->HashType() + "/" + TargetHash->HashValue(); |
| 2747 | size_t const trailing_slash = Desc.URI.find_last_of("/"); |
| 2748 | if (unlikely(trailing_slash == std::string::npos)) |
| 2749 | return; |
| 2750 | Desc.URI = Desc.URI.replace( |
| 2751 | trailing_slash, |
| 2752 | Desc.URI.substr(trailing_slash+1).size()+1, |
| 2753 | ByHash); |
| 2754 | } |
| 2755 | else if (unlikely(CurrentCompressionExtension.empty())) |
| 2756 | return; |
| 2757 | else |
| 2758 | { |
| 2759 | Desc.URI = URI + '.' + CurrentCompressionExtension; |
| 2760 | DestFile = DestFile + '.' + CurrentCompressionExtension; |
| 2761 | } |
| 2762 | |
| 2763 | |
| 2764 | Desc.Description = URIDesc; |
| 2765 | Desc.Owner = this; |
| 2766 | Desc.ShortDesc = ShortDesc; |
| 2767 | |
| 2768 | QueueURI(Desc); |
| 2769 | } |
| 2770 | /*}}}*/ |
| 2771 | // AcqIndex::Custom600Headers - Insert custom request headers /*{{{*/ |
| 2772 | // --------------------------------------------------------------------- |
| 2773 | /* The only header we use is the last-modified header. */ |
| 2774 | string pkgAcqIndex::Custom600Headers() const |
| 2775 | { |
| 2776 | |
| 2777 | string msg = "\nIndex-File: true"; |
| 2778 | |
| 2779 | if (TransactionManager->LastMetaIndexParser == NULL) |
| 2780 | { |
| 2781 | std::string const Final = GetFinalFilename(); |
| 2782 | |
| 2783 | struct stat Buf; |
| 2784 | if (stat(Final.c_str(),&Buf) == 0) |
| 2785 | msg += "\nLast-Modified: " + TimeRFC1123(Buf.st_mtime); |
| 2786 | } |
| 2787 | |
| 2788 | if(Target.IsOptional) |
| 2789 | msg += "\nFail-Ignore: true"; |
| 2790 | |
| 2791 | return msg; |
| 2792 | } |
| 2793 | /*}}}*/ |
| 2794 | // AcqIndex::Failed - getting the indexfile failed /*{{{*/ |
| 2795 | void pkgAcqIndex::Failed(string const &Message,pkgAcquire::MethodConfig const * const Cnf) |
| 2796 | { |
| 2797 | pkgAcqBaseIndex::Failed(Message,Cnf); |
| 2798 | |
| 2799 | // authorisation matches will not be fixed by other compression types |
| 2800 | if (Status != StatAuthError) |
| 2801 | { |
| 2802 | if (CompressionExtensions.empty() == false) |
| 2803 | { |
| 2804 | Init(Target.URI, Desc.Description, Desc.ShortDesc); |
| 2805 | Status = StatIdle; |
| 2806 | return; |
| 2807 | } |
| 2808 | } |
| 2809 | |
| 2810 | if(Target.IsOptional && GetExpectedHashes().empty() && Stage == STAGE_DOWNLOAD) |
| 2811 | Status = StatDone; |
| 2812 | else |
| 2813 | TransactionManager->AbortTransaction(); |
| 2814 | } |
| 2815 | /*}}}*/ |
| 2816 | // AcqIndex::Done - Finished a fetch /*{{{*/ |
| 2817 | // --------------------------------------------------------------------- |
| 2818 | /* This goes through a number of states.. On the initial fetch the |
| 2819 | method could possibly return an alternate filename which points |
| 2820 | to the uncompressed version of the file. If this is so the file |
| 2821 | is copied into the partial directory. In all other cases the file |
| 2822 | is decompressed with a compressed uri. */ |
| 2823 | void pkgAcqIndex::Done(string const &Message, |
| 2824 | HashStringList const &Hashes, |
| 2825 | pkgAcquire::MethodConfig const * const Cfg) |
| 2826 | { |
| 2827 | Item::Done(Message,Hashes,Cfg); |
| 2828 | |
| 2829 | switch(Stage) |
| 2830 | { |
| 2831 | case STAGE_DOWNLOAD: |
| 2832 | StageDownloadDone(Message); |
| 2833 | break; |
| 2834 | case STAGE_DECOMPRESS_AND_VERIFY: |
| 2835 | StageDecompressDone(); |
| 2836 | break; |
| 2837 | } |
| 2838 | } |
| 2839 | /*}}}*/ |
| 2840 | // AcqIndex::StageDownloadDone - Queue for decompress and verify /*{{{*/ |
| 2841 | void pkgAcqIndex::StageDownloadDone(string const &Message) |
| 2842 | { |
| 2843 | Local = true; |
| 2844 | Complete = true; |
| 2845 | |
| 2846 | std::string const AltFilename = LookupTag(Message,"Alt-Filename"); |
| 2847 | std::string Filename = LookupTag(Message,"Filename"); |
| 2848 | |
| 2849 | // we need to verify the file against the current Release file again |
| 2850 | // on if-modfied-since hit to avoid a stale attack against us |
| 2851 | if(StringToBool(LookupTag(Message,"IMS-Hit"),false) == true) |
| 2852 | { |
| 2853 | // copy FinalFile into partial/ so that we check the hash again |
| 2854 | string const FinalFile = GetExistingFilename(GetFinalFileNameFromURI(Target.URI)); |
| 2855 | if (symlink(FinalFile.c_str(), DestFile.c_str()) != 0) |
| 2856 | _error->WarningE("pkgAcqIndex::StageDownloadDone", "Symlinking final file %s back to %s failed", FinalFile.c_str(), DestFile.c_str()); |
| 2857 | else |
| 2858 | { |
| 2859 | EraseFileName = DestFile; |
| 2860 | Filename = DestFile; |
| 2861 | } |
| 2862 | Stage = STAGE_DECOMPRESS_AND_VERIFY; |
| 2863 | Desc.URI = "store:" + Filename; |
| 2864 | QueueURI(Desc); |
| 2865 | SetActiveSubprocess(::URI(Desc.URI).Access); |
| 2866 | return; |
| 2867 | } |
| 2868 | // methods like file:// give us an alternative (uncompressed) file |
| 2869 | else if (Target.KeepCompressed == false && AltFilename.empty() == false) |
| 2870 | { |
| 2871 | Filename = AltFilename; |
| 2872 | EraseFileName.clear(); |
| 2873 | } |
| 2874 | // Methods like e.g. "file:" will give us a (compressed) FileName that is |
| 2875 | // not the "DestFile" we set, in this case we uncompress from the local file |
| 2876 | else if (Filename != DestFile && RealFileExists(DestFile) == false) |
| 2877 | { |
| 2878 | // symlinking ensures that the filename can be used for compression detection |
| 2879 | // that is e.g. needed for by-hash which has no extension over file |
| 2880 | if (symlink(Filename.c_str(),DestFile.c_str()) != 0) |
| 2881 | _error->WarningE("pkgAcqIndex::StageDownloadDone", "Symlinking file %s to %s failed", Filename.c_str(), DestFile.c_str()); |
| 2882 | else |
| 2883 | { |
| 2884 | EraseFileName = DestFile; |
| 2885 | Filename = DestFile; |
| 2886 | } |
| 2887 | } |
| 2888 | |
| 2889 | Stage = STAGE_DECOMPRESS_AND_VERIFY; |
| 2890 | DestFile = GetKeepCompressedFileName(GetPartialFileNameFromURI(Target.URI), Target); |
| 2891 | if (Filename != DestFile && flExtension(Filename) == flExtension(DestFile)) |
| 2892 | Desc.URI = "copy:" + Filename; |
| 2893 | else |
| 2894 | Desc.URI = "store:" + Filename; |
| 2895 | if (DestFile == Filename) |
| 2896 | { |
| 2897 | if (CurrentCompressionExtension == "uncompressed") |
| 2898 | return StageDecompressDone(); |
| 2899 | DestFile = "/dev/null"; |
| 2900 | } |
| 2901 | |
| 2902 | if (EraseFileName.empty() && Filename != AltFilename) |
| 2903 | EraseFileName = Filename; |
| 2904 | |
| 2905 | // queue uri for the next stage |
| 2906 | QueueURI(Desc); |
| 2907 | SetActiveSubprocess(::URI(Desc.URI).Access); |
| 2908 | } |
| 2909 | /*}}}*/ |
| 2910 | // AcqIndex::StageDecompressDone - Final verification /*{{{*/ |
| 2911 | void pkgAcqIndex::StageDecompressDone() |
| 2912 | { |
| 2913 | if (DestFile == "/dev/null") |
| 2914 | DestFile = GetKeepCompressedFileName(GetPartialFileNameFromURI(Target.URI), Target); |
| 2915 | |
| 2916 | // Done, queue for rename on transaction finished |
| 2917 | TransactionManager->TransactionStageCopy(this, DestFile, GetFinalFilename()); |
| 2918 | } |
| 2919 | /*}}}*/ |
| 2920 | pkgAcqIndex::~pkgAcqIndex() {} |
| 2921 | |
| 2922 | |
| 2923 | // AcqArchive::AcqArchive - Constructor /*{{{*/ |
| 2924 | // --------------------------------------------------------------------- |
| 2925 | /* This just sets up the initial fetch environment and queues the first |
| 2926 | possibilitiy */ |
| 2927 | pkgAcqArchive::pkgAcqArchive(pkgAcquire * const Owner,pkgSourceList * const Sources, |
| 2928 | pkgRecords * const Recs,pkgCache::VerIterator const &Version, |
| 2929 | string &StoreFilename) : |
| 2930 | Item(Owner), d(NULL), LocalSource(false), Version(Version), Sources(Sources), Recs(Recs), |
| 2931 | StoreFilename(StoreFilename), Vf(Version.FileList()), |
| 2932 | Trusted(false) |
| 2933 | { |
| 2934 | Retries = _config->FindI("Acquire::Retries",0); |
| 2935 | |
| 2936 | if (Version.Arch() == 0) |
| 2937 | { |
| 2938 | _error->Error(_("I wasn't able to locate a file for the %s package. " |
| 2939 | "This might mean you need to manually fix this package. " |
| 2940 | "(due to missing arch)"), |
| 2941 | Version.ParentPkg().FullName().c_str()); |
| 2942 | return; |
| 2943 | } |
| 2944 | |
| 2945 | /* We need to find a filename to determine the extension. We make the |
| 2946 | assumption here that all the available sources for this version share |
| 2947 | the same extension.. */ |
| 2948 | // Skip not source sources, they do not have file fields. |
| 2949 | for (; Vf.end() == false; ++Vf) |
| 2950 | { |
| 2951 | if (Vf.File().Flagged(pkgCache::Flag::NotSource)) |
| 2952 | continue; |
| 2953 | break; |
| 2954 | } |
| 2955 | |
| 2956 | // Does not really matter here.. we are going to fail out below |
| 2957 | if (Vf.end() != true) |
| 2958 | { |
| 2959 | // If this fails to get a file name we will bomb out below. |
| 2960 | pkgRecords::Parser &Parse = Recs->Lookup(Vf); |
| 2961 | if (_error->PendingError() == true) |
| 2962 | return; |
| 2963 | |
| 2964 | // Generate the final file name as: package_version_arch.foo |
| 2965 | StoreFilename = QuoteString(Version.ParentPkg().Name(),"_:") + '_' + |
| 2966 | QuoteString(Version.VerStr(),"_:") + '_' + |
| 2967 | QuoteString(Version.Arch(),"_:.") + |
| 2968 | "." + flExtension(Parse.FileName()); |
| 2969 | } |
| 2970 | |
| 2971 | // check if we have one trusted source for the package. if so, switch |
| 2972 | // to "TrustedOnly" mode - but only if not in AllowUnauthenticated mode |
| 2973 | bool const allowUnauth = _config->FindB("APT::Get::AllowUnauthenticated", false); |
| 2974 | bool const debugAuth = _config->FindB("Debug::pkgAcquire::Auth", false); |
| 2975 | bool seenUntrusted = false; |
| 2976 | for (pkgCache::VerFileIterator i = Version.FileList(); i.end() == false; ++i) |
| 2977 | { |
| 2978 | pkgIndexFile *Index; |
| 2979 | if (Sources->FindIndex(i.File(),Index) == false) |
| 2980 | continue; |
| 2981 | |
| 2982 | if (debugAuth == true) |
| 2983 | std::cerr << "Checking index: " << Index->Describe() |
| 2984 | << "(Trusted=" << Index->IsTrusted() << ")" << std::endl; |
| 2985 | |
| 2986 | if (Index->IsTrusted() == true) |
| 2987 | { |
| 2988 | Trusted = true; |
| 2989 | if (allowUnauth == false) |
| 2990 | break; |
| 2991 | } |
| 2992 | else |
| 2993 | seenUntrusted = true; |
| 2994 | } |
| 2995 | |
| 2996 | // "allow-unauthenticated" restores apts old fetching behaviour |
| 2997 | // that means that e.g. unauthenticated file:// uris are higher |
| 2998 | // priority than authenticated http:// uris |
| 2999 | if (allowUnauth == true && seenUntrusted == true) |
| 3000 | Trusted = false; |
| 3001 | |
| 3002 | // Select a source |
| 3003 | if (QueueNext() == false && _error->PendingError() == false) |
| 3004 | _error->Error(_("Can't find a source to download version '%s' of '%s'"), |
| 3005 | Version.VerStr(), Version.ParentPkg().FullName(false).c_str()); |
| 3006 | } |
| 3007 | /*}}}*/ |
| 3008 | // AcqArchive::QueueNext - Queue the next file source /*{{{*/ |
| 3009 | // --------------------------------------------------------------------- |
| 3010 | /* This queues the next available file version for download. It checks if |
| 3011 | the archive is already available in the cache and stashs the MD5 for |
| 3012 | checking later. */ |
| 3013 | bool pkgAcqArchive::QueueNext() |
| 3014 | { |
| 3015 | for (; Vf.end() == false; ++Vf) |
| 3016 | { |
| 3017 | pkgCache::PkgFileIterator const PkgF = Vf.File(); |
| 3018 | // Ignore not source sources |
| 3019 | if (PkgF.Flagged(pkgCache::Flag::NotSource)) |
| 3020 | continue; |
| 3021 | |
| 3022 | // Try to cross match against the source list |
| 3023 | pkgIndexFile *Index; |
| 3024 | if (Sources->FindIndex(PkgF, Index) == false) |
| 3025 | continue; |
| 3026 | LocalSource = PkgF.Flagged(pkgCache::Flag::LocalSource); |
| 3027 | |
| 3028 | // only try to get a trusted package from another source if that source |
| 3029 | // is also trusted |
| 3030 | if(Trusted && !Index->IsTrusted()) |
| 3031 | continue; |
| 3032 | |
| 3033 | // Grab the text package record |
| 3034 | pkgRecords::Parser &Parse = Recs->Lookup(Vf); |
| 3035 | if (_error->PendingError() == true) |
| 3036 | return false; |
| 3037 | |
| 3038 | string PkgFile = Parse.FileName(); |
| 3039 | ExpectedHashes = Parse.Hashes(); |
| 3040 | |
| 3041 | if (PkgFile.empty() == true) |
| 3042 | return _error->Error(_("The package index files are corrupted. No Filename: " |
| 3043 | "field for package %s."), |
| 3044 | Version.ParentPkg().Name()); |
| 3045 | |
| 3046 | Desc.URI = Index->ArchiveURI(PkgFile); |
| 3047 | Desc.Description = Index->ArchiveInfo(Version); |
| 3048 | Desc.Owner = this; |
| 3049 | Desc.ShortDesc = Version.ParentPkg().FullName(true); |
| 3050 | |
| 3051 | // See if we already have the file. (Legacy filenames) |
| 3052 | FileSize = Version->Size; |
| 3053 | string FinalFile = _config->FindDir("Dir::Cache::Archives") + flNotDir(PkgFile); |
| 3054 | struct stat Buf; |
| 3055 | if (stat(FinalFile.c_str(),&Buf) == 0) |
| 3056 | { |
| 3057 | // Make sure the size matches |
| 3058 | if ((unsigned long long)Buf.st_size == Version->Size) |
| 3059 | { |
| 3060 | Complete = true; |
| 3061 | Local = true; |
| 3062 | Status = StatDone; |
| 3063 | StoreFilename = DestFile = FinalFile; |
| 3064 | return true; |
| 3065 | } |
| 3066 | |
| 3067 | /* Hmm, we have a file and its size does not match, this means it is |
| 3068 | an old style mismatched arch */ |
| 3069 | RemoveFile("pkgAcqArchive::QueueNext", FinalFile); |
| 3070 | } |
| 3071 | |
| 3072 | // Check it again using the new style output filenames |
| 3073 | FinalFile = _config->FindDir("Dir::Cache::Archives") + flNotDir(StoreFilename); |
| 3074 | if (stat(FinalFile.c_str(),&Buf) == 0) |
| 3075 | { |
| 3076 | // Make sure the size matches |
| 3077 | if ((unsigned long long)Buf.st_size == Version->Size) |
| 3078 | { |
| 3079 | Complete = true; |
| 3080 | Local = true; |
| 3081 | Status = StatDone; |
| 3082 | StoreFilename = DestFile = FinalFile; |
| 3083 | return true; |
| 3084 | } |
| 3085 | |
| 3086 | /* Hmm, we have a file and its size does not match, this shouldn't |
| 3087 | happen.. */ |
| 3088 | RemoveFile("pkgAcqArchive::QueueNext", FinalFile); |
| 3089 | } |
| 3090 | |
| 3091 | DestFile = _config->FindDir("Dir::Cache::Archives") + "partial/" + flNotDir(StoreFilename); |
| 3092 | |
| 3093 | // Check the destination file |
| 3094 | if (stat(DestFile.c_str(),&Buf) == 0) |
| 3095 | { |
| 3096 | // Hmm, the partial file is too big, erase it |
| 3097 | if ((unsigned long long)Buf.st_size > Version->Size) |
| 3098 | RemoveFile("pkgAcqArchive::QueueNext", DestFile); |
| 3099 | else |
| 3100 | PartialSize = Buf.st_size; |
| 3101 | } |
| 3102 | |
| 3103 | // Disables download of archives - useful if no real installation follows, |
| 3104 | // e.g. if we are just interested in proposed installation order |
| 3105 | if (_config->FindB("Debug::pkgAcqArchive::NoQueue", false) == true) |
| 3106 | { |
| 3107 | Complete = true; |
| 3108 | Local = true; |
| 3109 | Status = StatDone; |
| 3110 | StoreFilename = DestFile = FinalFile; |
| 3111 | return true; |
| 3112 | } |
| 3113 | |
| 3114 | // Create the item |
| 3115 | Local = false; |
| 3116 | QueueURI(Desc); |
| 3117 | |
| 3118 | ++Vf; |
| 3119 | return true; |
| 3120 | } |
| 3121 | return false; |
| 3122 | } |
| 3123 | /*}}}*/ |
| 3124 | // AcqArchive::Done - Finished fetching /*{{{*/ |
| 3125 | // --------------------------------------------------------------------- |
| 3126 | /* */ |
| 3127 | void pkgAcqArchive::Done(string const &Message, HashStringList const &Hashes, |
| 3128 | pkgAcquire::MethodConfig const * const Cfg) |
| 3129 | { |
| 3130 | Item::Done(Message, Hashes, Cfg); |
| 3131 | |
| 3132 | // Grab the output filename |
| 3133 | std::string const FileName = LookupTag(Message,"Filename"); |
| 3134 | if (DestFile != FileName && RealFileExists(DestFile) == false) |
| 3135 | { |
| 3136 | StoreFilename = DestFile = FileName; |
| 3137 | Local = true; |
| 3138 | Complete = true; |
| 3139 | return; |
| 3140 | } |
| 3141 | |
| 3142 | // Done, move it into position |
| 3143 | string const FinalFile = GetFinalFilename(); |
| 3144 | Rename(DestFile,FinalFile); |
| 3145 | StoreFilename = DestFile = FinalFile; |
| 3146 | Complete = true; |
| 3147 | } |
| 3148 | /*}}}*/ |
| 3149 | // AcqArchive::Failed - Failure handler /*{{{*/ |
| 3150 | // --------------------------------------------------------------------- |
| 3151 | /* Here we try other sources */ |
| 3152 | void pkgAcqArchive::Failed(string const &Message,pkgAcquire::MethodConfig const * const Cnf) |
| 3153 | { |
| 3154 | Item::Failed(Message,Cnf); |
| 3155 | |
| 3156 | /* We don't really want to retry on failed media swaps, this prevents |
| 3157 | that. An interesting observation is that permanent failures are not |
| 3158 | recorded. */ |
| 3159 | if (Cnf->Removable == true && |
| 3160 | StringToBool(LookupTag(Message,"Transient-Failure"),false) == true) |
| 3161 | { |
| 3162 | // Vf = Version.FileList(); |
| 3163 | while (Vf.end() == false) ++Vf; |
| 3164 | StoreFilename = string(); |
| 3165 | return; |
| 3166 | } |
| 3167 | |
| 3168 | Status = StatIdle; |
| 3169 | if (QueueNext() == false) |
| 3170 | { |
| 3171 | // This is the retry counter |
| 3172 | if (Retries != 0 && |
| 3173 | Cnf->LocalOnly == false && |
| 3174 | StringToBool(LookupTag(Message,"Transient-Failure"),false) == true) |
| 3175 | { |
| 3176 | Retries--; |
| 3177 | Vf = Version.FileList(); |
| 3178 | if (QueueNext() == true) |
| 3179 | return; |
| 3180 | } |
| 3181 | |
| 3182 | StoreFilename = string(); |
| 3183 | Status = StatError; |
| 3184 | } |
| 3185 | } |
| 3186 | /*}}}*/ |
| 3187 | APT_PURE bool pkgAcqArchive::IsTrusted() const /*{{{*/ |
| 3188 | { |
| 3189 | return Trusted; |
| 3190 | } |
| 3191 | /*}}}*/ |
| 3192 | void pkgAcqArchive::Finished() /*{{{*/ |
| 3193 | { |
| 3194 | if (Status == pkgAcquire::Item::StatDone && |
| 3195 | Complete == true) |
| 3196 | return; |
| 3197 | StoreFilename = string(); |
| 3198 | } |
| 3199 | /*}}}*/ |
| 3200 | std::string pkgAcqArchive::DescURI() const /*{{{*/ |
| 3201 | { |
| 3202 | return Desc.URI; |
| 3203 | } |
| 3204 | /*}}}*/ |
| 3205 | std::string pkgAcqArchive::ShortDesc() const /*{{{*/ |
| 3206 | { |
| 3207 | return Desc.ShortDesc; |
| 3208 | } |
| 3209 | /*}}}*/ |
| 3210 | pkgAcqArchive::~pkgAcqArchive() {} |
| 3211 | |
| 3212 | // AcqChangelog::pkgAcqChangelog - Constructors /*{{{*/ |
| 3213 | class pkgAcqChangelog::Private |
| 3214 | { |
| 3215 | public: |
| 3216 | std::string FinalFile; |
| 3217 | }; |
| 3218 | pkgAcqChangelog::pkgAcqChangelog(pkgAcquire * const Owner, pkgCache::VerIterator const &Ver, |
| 3219 | std::string const &DestDir, std::string const &DestFilename) : |
| 3220 | pkgAcquire::Item(Owner), d(new pkgAcqChangelog::Private()), SrcName(Ver.SourcePkgName()), SrcVersion(Ver.SourceVerStr()) |
| 3221 | { |
| 3222 | Desc.URI = URI(Ver); |
| 3223 | Init(DestDir, DestFilename); |
| 3224 | } |
| 3225 | // some parameters are char* here as they come likely from char* interfaces – which can also return NULL |
| 3226 | pkgAcqChangelog::pkgAcqChangelog(pkgAcquire * const Owner, pkgCache::RlsFileIterator const &RlsFile, |
| 3227 | char const * const Component, char const * const SrcName, char const * const SrcVersion, |
| 3228 | const string &DestDir, const string &DestFilename) : |
| 3229 | pkgAcquire::Item(Owner), d(new pkgAcqChangelog::Private()), SrcName(SrcName), SrcVersion(SrcVersion) |
| 3230 | { |
| 3231 | Desc.URI = URI(RlsFile, Component, SrcName, SrcVersion); |
| 3232 | Init(DestDir, DestFilename); |
| 3233 | } |
| 3234 | pkgAcqChangelog::pkgAcqChangelog(pkgAcquire * const Owner, |
| 3235 | std::string const &URI, char const * const SrcName, char const * const SrcVersion, |
| 3236 | const string &DestDir, const string &DestFilename) : |
| 3237 | pkgAcquire::Item(Owner), d(new pkgAcqChangelog::Private()), SrcName(SrcName), SrcVersion(SrcVersion) |
| 3238 | { |
| 3239 | Desc.URI = URI; |
| 3240 | Init(DestDir, DestFilename); |
| 3241 | } |
| 3242 | void pkgAcqChangelog::Init(std::string const &DestDir, std::string const &DestFilename) |
| 3243 | { |
| 3244 | if (Desc.URI.empty()) |
| 3245 | { |
| 3246 | Status = StatError; |
| 3247 | // TRANSLATOR: %s=%s is sourcename=sourceversion, e.g. apt=1.1 |
| 3248 | strprintf(ErrorText, _("Changelog unavailable for %s=%s"), SrcName.c_str(), SrcVersion.c_str()); |
| 3249 | // Let the error message print something sensible rather than "Failed to fetch /" |
| 3250 | if (DestFilename.empty()) |
| 3251 | DestFile = SrcName + ".changelog"; |
| 3252 | else |
| 3253 | DestFile = DestFilename; |
| 3254 | Desc.URI = "changelog:/" + DestFile; |
| 3255 | return; |
| 3256 | } |
| 3257 | |
| 3258 | std::string DestFileName; |
| 3259 | if (DestFilename.empty()) |
| 3260 | DestFileName = flCombine(DestFile, SrcName + ".changelog"); |
| 3261 | else |
| 3262 | DestFileName = flCombine(DestFile, DestFilename); |
| 3263 | |
| 3264 | std::string const SandboxUser = _config->Find("APT::Sandbox::User"); |
| 3265 | std::string const systemTemp = GetTempDir(SandboxUser); |
| 3266 | char tmpname[1000]; |
| 3267 | snprintf(tmpname, sizeof(tmpname), "%s/apt-changelog-XXXXXX", systemTemp.c_str()); |
| 3268 | if (NULL == mkdtemp(tmpname)) |
| 3269 | { |
| 3270 | _error->Errno("mkdtemp", "mkdtemp failed in changelog acquire of %s %s", SrcName.c_str(), SrcVersion.c_str()); |
| 3271 | Status = StatError; |
| 3272 | return; |
| 3273 | } |
| 3274 | TemporaryDirectory = tmpname; |
| 3275 | |
| 3276 | ChangeOwnerAndPermissionOfFile("Item::QueueURI", TemporaryDirectory.c_str(), |
| 3277 | SandboxUser.c_str(), "root", 0700); |
| 3278 | |
| 3279 | DestFile = flCombine(TemporaryDirectory, DestFileName); |
| 3280 | if (DestDir.empty() == false) |
| 3281 | { |
| 3282 | d->FinalFile = flCombine(DestDir, DestFileName); |
| 3283 | if (RealFileExists(d->FinalFile)) |
| 3284 | { |
| 3285 | FileFd file1, file2; |
| 3286 | if (file1.Open(DestFile, FileFd::WriteOnly | FileFd::Create | FileFd::Exclusive) && |
| 3287 | file2.Open(d->FinalFile, FileFd::ReadOnly) && CopyFile(file2, file1)) |
| 3288 | { |
| 3289 | struct timeval times[2]; |
| 3290 | times[0].tv_sec = times[1].tv_sec = file2.ModificationTime(); |
| 3291 | times[0].tv_usec = times[1].tv_usec = 0; |
| 3292 | utimes(DestFile.c_str(), times); |
| 3293 | } |
| 3294 | } |
| 3295 | } |
| 3296 | |
| 3297 | Desc.ShortDesc = "Changelog"; |
| 3298 | strprintf(Desc.Description, "%s %s %s Changelog", URI::SiteOnly(Desc.URI).c_str(), SrcName.c_str(), SrcVersion.c_str()); |
| 3299 | Desc.Owner = this; |
| 3300 | QueueURI(Desc); |
| 3301 | } |
| 3302 | /*}}}*/ |
| 3303 | std::string pkgAcqChangelog::URI(pkgCache::VerIterator const &Ver) /*{{{*/ |
| 3304 | { |
| 3305 | std::string const confOnline = "Acquire::Changelogs::AlwaysOnline"; |
| 3306 | bool AlwaysOnline = _config->FindB(confOnline, false); |
| 3307 | if (AlwaysOnline == false) |
| 3308 | for (pkgCache::VerFileIterator VF = Ver.FileList(); VF.end() == false; ++VF) |
| 3309 | { |
| 3310 | pkgCache::PkgFileIterator const PF = VF.File(); |
| 3311 | if (PF.Flagged(pkgCache::Flag::NotSource) || PF->Release == 0) |
| 3312 | continue; |
| 3313 | pkgCache::RlsFileIterator const RF = PF.ReleaseFile(); |
| 3314 | if (RF->Origin != 0 && _config->FindB(confOnline + "::Origin::" + RF.Origin(), false)) |
| 3315 | { |
| 3316 | AlwaysOnline = true; |
| 3317 | break; |
| 3318 | } |
| 3319 | } |
| 3320 | if (AlwaysOnline == false) |
| 3321 | { |
| 3322 | pkgCache::PkgIterator const Pkg = Ver.ParentPkg(); |
| 3323 | if (Pkg->CurrentVer != 0 && Pkg.CurrentVer() == Ver) |
| 3324 | { |
| 3325 | std::string const basename = std::string("/usr/share/doc/") + Pkg.Name() + "/changelog"; |
| 3326 | std::string const debianname = basename + ".Debian"; |
| 3327 | if (FileExists(debianname)) |
| 3328 | return "copy://" + debianname; |
| 3329 | else if (FileExists(debianname + ".gz")) |
| 3330 | return "gzip://" + debianname + ".gz"; |
| 3331 | else if (FileExists(basename)) |
| 3332 | return "copy://" + basename; |
| 3333 | else if (FileExists(basename + ".gz")) |
| 3334 | return "gzip://" + basename + ".gz"; |
| 3335 | } |
| 3336 | } |
| 3337 | |
| 3338 | char const * const SrcName = Ver.SourcePkgName(); |
| 3339 | char const * const SrcVersion = Ver.SourceVerStr(); |
| 3340 | // find the first source for this version which promises a changelog |
| 3341 | for (pkgCache::VerFileIterator VF = Ver.FileList(); VF.end() == false; ++VF) |
| 3342 | { |
| 3343 | pkgCache::PkgFileIterator const PF = VF.File(); |
| 3344 | if (PF.Flagged(pkgCache::Flag::NotSource) || PF->Release == 0) |
| 3345 | continue; |
| 3346 | pkgCache::RlsFileIterator const RF = PF.ReleaseFile(); |
| 3347 | std::string const uri = URI(RF, PF.Component(), SrcName, SrcVersion); |
| 3348 | if (uri.empty()) |
| 3349 | continue; |
| 3350 | return uri; |
| 3351 | } |
| 3352 | return ""; |
| 3353 | } |
| 3354 | std::string pkgAcqChangelog::URITemplate(pkgCache::RlsFileIterator const &Rls) |
| 3355 | { |
| 3356 | if (Rls.end() == true || (Rls->Label == 0 && Rls->Origin == 0)) |
| 3357 | return ""; |
| 3358 | std::string const serverConfig = "Acquire::Changelogs::URI"; |
| 3359 | std::string server; |
| 3360 | #define APT_EMPTY_SERVER \ |
| 3361 | if (server.empty() == false) \ |
| 3362 | { \ |
| 3363 | if (server != "no") \ |
| 3364 | return server; \ |
| 3365 | return ""; \ |
| 3366 | } |
| 3367 | #define APT_CHECK_SERVER(X, Y) \ |
| 3368 | if (Rls->X != 0) \ |
| 3369 | { \ |
| 3370 | std::string const specialServerConfig = serverConfig + "::" + Y + #X + "::" + Rls.X(); \ |
| 3371 | server = _config->Find(specialServerConfig); \ |
| 3372 | APT_EMPTY_SERVER \ |
| 3373 | } |
| 3374 | // this way e.g. Debian-Security can fallback to Debian |
| 3375 | APT_CHECK_SERVER(Label, "Override::") |
| 3376 | APT_CHECK_SERVER(Origin, "Override::") |
| 3377 | |
| 3378 | if (RealFileExists(Rls.FileName())) |
| 3379 | { |
| 3380 | _error->PushToStack(); |
| 3381 | FileFd rf; |
| 3382 | /* This can be costly. A caller wanting to get millions of URIs might |
| 3383 | want to do this on its own once and use Override settings. |
| 3384 | We don't do this here as Origin/Label are not as unique as they |
| 3385 | should be so this could produce request order-dependent anomalies */ |
| 3386 | if (OpenMaybeClearSignedFile(Rls.FileName(), rf) == true) |
| 3387 | { |
| 3388 | pkgTagFile TagFile(&rf, rf.Size()); |
| 3389 | pkgTagSection Section; |
| 3390 | if (TagFile.Step(Section) == true) |
| 3391 | server = Section.FindS("Changelogs"); |
| 3392 | } |
| 3393 | _error->RevertToStack(); |
| 3394 | APT_EMPTY_SERVER |
| 3395 | } |
| 3396 | |
| 3397 | APT_CHECK_SERVER(Label, "") |
| 3398 | APT_CHECK_SERVER(Origin, "") |
| 3399 | #undef APT_CHECK_SERVER |
| 3400 | #undef APT_EMPTY_SERVER |
| 3401 | return ""; |
| 3402 | } |
| 3403 | std::string pkgAcqChangelog::URI(pkgCache::RlsFileIterator const &Rls, |
| 3404 | char const * const Component, char const * const SrcName, |
| 3405 | char const * const SrcVersion) |
| 3406 | { |
| 3407 | return URI(URITemplate(Rls), Component, SrcName, SrcVersion); |
| 3408 | } |
| 3409 | std::string pkgAcqChangelog::URI(std::string const &Template, |
| 3410 | char const * const Component, char const * const SrcName, |
| 3411 | char const * const SrcVersion) |
| 3412 | { |
| 3413 | if (Template.find("@CHANGEPATH@") == std::string::npos) |
| 3414 | return ""; |
| 3415 | |
| 3416 | // the path is: COMPONENT/SRC/SRCNAME/SRCNAME_SRCVER, e.g. main/a/apt/1.1 or contrib/liba/libapt/2.0 |
| 3417 | std::string Src = SrcName; |
| 3418 | std::string path = APT::String::Startswith(SrcName, "lib") ? Src.substr(0, 4) : Src.substr(0,1); |
| 3419 | path.append("/").append(Src).append("/"); |
| 3420 | path.append(Src).append("_").append(StripEpoch(SrcVersion)); |
| 3421 | // we omit component for releases without one (= flat-style repositories) |
| 3422 | if (Component != NULL && strlen(Component) != 0) |
| 3423 | path = std::string(Component) + "/" + path; |
| 3424 | |
| 3425 | return SubstVar(Template, "@CHANGEPATH@", path); |
| 3426 | } |
| 3427 | /*}}}*/ |
| 3428 | // AcqChangelog::Failed - Failure handler /*{{{*/ |
| 3429 | void pkgAcqChangelog::Failed(string const &Message, pkgAcquire::MethodConfig const * const Cnf) |
| 3430 | { |
| 3431 | Item::Failed(Message,Cnf); |
| 3432 | |
| 3433 | std::string errText; |
| 3434 | // TRANSLATOR: %s=%s is sourcename=sourceversion, e.g. apt=1.1 |
| 3435 | strprintf(errText, _("Changelog unavailable for %s=%s"), SrcName.c_str(), SrcVersion.c_str()); |
| 3436 | |
| 3437 | // Error is probably something techy like 404 Not Found |
| 3438 | if (ErrorText.empty()) |
| 3439 | ErrorText = errText; |
| 3440 | else |
| 3441 | ErrorText = errText + " (" + ErrorText + ")"; |
| 3442 | } |
| 3443 | /*}}}*/ |
| 3444 | // AcqChangelog::Done - Item downloaded OK /*{{{*/ |
| 3445 | void pkgAcqChangelog::Done(string const &Message,HashStringList const &CalcHashes, |
| 3446 | pkgAcquire::MethodConfig const * const Cnf) |
| 3447 | { |
| 3448 | Item::Done(Message,CalcHashes,Cnf); |
| 3449 | if (d->FinalFile.empty() == false) |
| 3450 | { |
| 3451 | if (RemoveFile("pkgAcqChangelog::Done", d->FinalFile) == false || |
| 3452 | Rename(DestFile, d->FinalFile) == false) |
| 3453 | Status = StatError; |
| 3454 | } |
| 3455 | |
| 3456 | Complete = true; |
| 3457 | } |
| 3458 | /*}}}*/ |
| 3459 | pkgAcqChangelog::~pkgAcqChangelog() /*{{{*/ |
| 3460 | { |
| 3461 | if (TemporaryDirectory.empty() == false) |
| 3462 | { |
| 3463 | RemoveFile("~pkgAcqChangelog", DestFile); |
| 3464 | rmdir(TemporaryDirectory.c_str()); |
| 3465 | } |
| 3466 | delete d; |
| 3467 | } |
| 3468 | /*}}}*/ |
| 3469 | |
| 3470 | // AcqFile::pkgAcqFile - Constructor /*{{{*/ |
| 3471 | pkgAcqFile::pkgAcqFile(pkgAcquire * const Owner,string const &URI, HashStringList const &Hashes, |
| 3472 | unsigned long long const Size,string const &Dsc,string const &ShortDesc, |
| 3473 | const string &DestDir, const string &DestFilename, |
| 3474 | bool const IsIndexFile) : |
| 3475 | Item(Owner), d(NULL), IsIndexFile(IsIndexFile), ExpectedHashes(Hashes) |
| 3476 | { |
| 3477 | Retries = _config->FindI("Acquire::Retries",0); |
| 3478 | |
| 3479 | if(!DestFilename.empty()) |
| 3480 | DestFile = DestFilename; |
| 3481 | else if(!DestDir.empty()) |
| 3482 | DestFile = DestDir + "/" + flNotDir(URI); |
| 3483 | else |
| 3484 | DestFile = flNotDir(URI); |
| 3485 | |
| 3486 | // Create the item |
| 3487 | Desc.URI = URI; |
| 3488 | Desc.Description = Dsc; |
| 3489 | Desc.Owner = this; |
| 3490 | |
| 3491 | // Set the short description to the archive component |
| 3492 | Desc.ShortDesc = ShortDesc; |
| 3493 | |
| 3494 | // Get the transfer sizes |
| 3495 | FileSize = Size; |
| 3496 | struct stat Buf; |
| 3497 | if (stat(DestFile.c_str(),&Buf) == 0) |
| 3498 | { |
| 3499 | // Hmm, the partial file is too big, erase it |
| 3500 | if ((Size > 0) && (unsigned long long)Buf.st_size > Size) |
| 3501 | RemoveFile("pkgAcqFile", DestFile); |
| 3502 | else |
| 3503 | PartialSize = Buf.st_size; |
| 3504 | } |
| 3505 | |
| 3506 | QueueURI(Desc); |
| 3507 | } |
| 3508 | /*}}}*/ |
| 3509 | // AcqFile::Done - Item downloaded OK /*{{{*/ |
| 3510 | void pkgAcqFile::Done(string const &Message,HashStringList const &CalcHashes, |
| 3511 | pkgAcquire::MethodConfig const * const Cnf) |
| 3512 | { |
| 3513 | Item::Done(Message,CalcHashes,Cnf); |
| 3514 | |
| 3515 | std::string const FileName = LookupTag(Message,"Filename"); |
| 3516 | Complete = true; |
| 3517 | |
| 3518 | // The files timestamp matches |
| 3519 | if (StringToBool(LookupTag(Message,"IMS-Hit"),false) == true) |
| 3520 | return; |
| 3521 | |
| 3522 | // We have to copy it into place |
| 3523 | if (RealFileExists(DestFile.c_str()) == false) |
| 3524 | { |
| 3525 | Local = true; |
| 3526 | if (_config->FindB("Acquire::Source-Symlinks",true) == false || |
| 3527 | Cnf->Removable == true) |
| 3528 | { |
| 3529 | Desc.URI = "copy:" + FileName; |
| 3530 | QueueURI(Desc); |
| 3531 | return; |
| 3532 | } |
| 3533 | |
| 3534 | // Erase the file if it is a symlink so we can overwrite it |
| 3535 | struct stat St; |
| 3536 | if (lstat(DestFile.c_str(),&St) == 0) |
| 3537 | { |
| 3538 | if (S_ISLNK(St.st_mode) != 0) |
| 3539 | RemoveFile("pkgAcqFile::Done", DestFile); |
| 3540 | } |
| 3541 | |
| 3542 | // Symlink the file |
| 3543 | if (symlink(FileName.c_str(),DestFile.c_str()) != 0) |
| 3544 | { |
| 3545 | _error->PushToStack(); |
| 3546 | _error->Errno("pkgAcqFile::Done", "Symlinking file %s failed", DestFile.c_str()); |
| 3547 | std::stringstream msg; |
| 3548 | _error->DumpErrors(msg, GlobalError::DEBUG, false); |
| 3549 | _error->RevertToStack(); |
| 3550 | ErrorText = msg.str(); |
| 3551 | Status = StatError; |
| 3552 | Complete = false; |
| 3553 | } |
| 3554 | } |
| 3555 | } |
| 3556 | /*}}}*/ |
| 3557 | // AcqFile::Failed - Failure handler /*{{{*/ |
| 3558 | // --------------------------------------------------------------------- |
| 3559 | /* Here we try other sources */ |
| 3560 | void pkgAcqFile::Failed(string const &Message, pkgAcquire::MethodConfig const * const Cnf) |
| 3561 | { |
| 3562 | Item::Failed(Message,Cnf); |
| 3563 | |
| 3564 | // This is the retry counter |
| 3565 | if (Retries != 0 && |
| 3566 | Cnf->LocalOnly == false && |
| 3567 | StringToBool(LookupTag(Message,"Transient-Failure"),false) == true) |
| 3568 | { |
| 3569 | --Retries; |
| 3570 | QueueURI(Desc); |
| 3571 | Status = StatIdle; |
| 3572 | return; |
| 3573 | } |
| 3574 | |
| 3575 | } |
| 3576 | /*}}}*/ |
| 3577 | string pkgAcqFile::Custom600Headers() const /*{{{*/ |
| 3578 | { |
| 3579 | if (IsIndexFile) |
| 3580 | return "\nIndex-File: true"; |
| 3581 | return ""; |
| 3582 | } |
| 3583 | /*}}}*/ |
| 3584 | pkgAcqFile::~pkgAcqFile() {} |