X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/7be8c02360bdb9bd7f59b087da874f88af2a7206..15847d263c371cadcb8664021b8eb2444dd70998:/apt-pkg/acquire-item.cc diff --git a/apt-pkg/acquire-item.cc b/apt-pkg/acquire-item.cc index b46489f87..04505b35a 100644 --- a/apt-pkg/acquire-item.cc +++ b/apt-pkg/acquire-item.cc @@ -25,6 +25,8 @@ #include #include #include +#include +#include #include #include @@ -141,6 +143,32 @@ void pkgAcquire::Item::Rename(string From,string To) } } /*}}}*/ +bool pkgAcquire::Item::RenameOnError(pkgAcquire::Item::RenameOnErrorState const error)/*{{{*/ +{ + if(FileExists(DestFile)) + Rename(DestFile, DestFile + ".FAILED"); + + switch (error) + { + case HashSumMismatch: + ErrorText = _("Hash Sum mismatch"); + Status = StatAuthError; + ReportMirrorFailure("HashChecksumFailure"); + break; + case SizeMismatch: + ErrorText = _("Size mismatch"); + Status = StatAuthError; + ReportMirrorFailure("SizeFailure"); + break; + case InvalidFormat: + ErrorText = _("Invalid file format"); + Status = StatError; + // do not report as usually its not the mirrors fault, but Portal/Proxy + break; + } + return false; +} + /*}}}*/ // Acquire::Item::ReportMirrorFailure /*{{{*/ // --------------------------------------------------------------------- void pkgAcquire::Item::ReportMirrorFailure(string FailCode) @@ -187,14 +215,14 @@ void pkgAcquire::Item::ReportMirrorFailure(string FailCode) /*}}}*/ // AcqSubIndex::AcqSubIndex - Constructor /*{{{*/ // --------------------------------------------------------------------- -/* Get the Index file first and see if there are languages available - * If so, create a pkgAcqIndexTrans for the found language(s). - */ +/* Get a sub-index file based on checksums from a 'master' file and + possibly query additional files */ pkgAcqSubIndex::pkgAcqSubIndex(pkgAcquire *Owner, string const &URI, string const &URIDesc, string const &ShortDesc, HashString const &ExpectedHash) : Item(Owner), ExpectedHash(ExpectedHash) { + /* XXX: Beware: Currently this class does nothing (of value) anymore ! */ Debug = _config->FindB("Debug::pkgAcquire::SubIndex",false); DestFile = _config->FindDir("Dir::State::lists") + "partial/"; @@ -234,17 +262,7 @@ void pkgAcqSubIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf) /*{{{* Status = StatDone; Dequeue(); - // No good Index is provided, so try guessing - std::vector langs = APT::Configuration::getLanguages(true); - for (std::vector::const_iterator l = langs.begin(); - l != langs.end(); ++l) - { - if (*l == "none") continue; - string const file = "Translation-" + *l; - new pkgAcqIndexTrans(Owner, Desc.URI.substr(0, Desc.URI.rfind('/')+1).append(file), - Desc.Description.erase(Desc.Description.rfind(' ')+1).append(file), - file); - } + // No good Index is provided } /*}}}*/ void pkgAcqSubIndex::Done(string Message,unsigned long long Size,string Md5Hash, /*{{{*/ @@ -303,38 +321,7 @@ bool pkgAcqSubIndex::ParseIndex(string const &IndexFile) /*{{{*/ indexRecords SubIndexParser; if (FileExists(IndexFile) == false || SubIndexParser.Load(IndexFile) == false) return false; - - std::vector lang = APT::Configuration::getLanguages(true); - for (std::vector::const_iterator l = lang.begin(); - l != lang.end(); ++l) - { - if (*l == "none") - continue; - - string file = "Translation-" + *l; - indexRecords::checkSum const *Record = SubIndexParser.Lookup(file); - HashString expected; - if (Record == NULL) - { - // FIXME: the Index file provided by debian currently only includes bz2 records - Record = SubIndexParser.Lookup(file + ".bz2"); - if (Record == NULL) - continue; - } - else - { - expected = Record->Hash; - if (expected.empty() == true) - continue; - } - - IndexTarget target; - target.Description = Desc.Description.erase(Desc.Description.rfind(' ')+1).append(file); - target.MetaKey = file; - target.ShortDesc = file; - target.URI = Desc.URI.substr(0, Desc.URI.rfind('/')+1).append(file); - new pkgAcqIndexTrans(Owner, &target, expected, &SubIndexParser); - } + // so something with the downloaded index return true; } /*}}}*/ @@ -436,7 +423,7 @@ bool pkgAcqDiffIndex::ParseDiffIndex(string IndexDiffFile) /*{{{*/ FileFd fd(CurrentPackagesFile, FileFd::ReadOnly); SHA1Summation SHA1; - SHA1.AddFD(fd.Fd(), fd.Size()); + SHA1.AddFD(fd); string const local_sha1 = SHA1.Result(); if(local_sha1 == ServerSha1) @@ -599,7 +586,7 @@ pkgAcqIndexDiffs::pkgAcqIndexDiffs(pkgAcquire *Owner, Desc.Owner = this; Desc.ShortDesc = ShortDesc; - if(available_patches.size() == 0) + if(available_patches.empty() == true) { // we are done (yeah!) Finish(true); @@ -634,9 +621,7 @@ void pkgAcqIndexDiffs::Finish(bool allDone) if(!ExpectedHash.empty() && !ExpectedHash.VerifyFile(DestFile)) { - Status = StatAuthError; - ErrorText = _("MD5Sum mismatch"); - Rename(DestFile,DestFile + ".FAILED"); + RenameOnError(HashSumMismatch); Dequeue(); return; } @@ -667,7 +652,7 @@ bool pkgAcqIndexDiffs::QueueNextDiff() /*{{{*/ FileFd fd(FinalFile, FileFd::ReadOnly); SHA1Summation SHA1; - SHA1.AddFD(fd.Fd(), fd.Size()); + SHA1.AddFD(fd); string local_sha1 = string(SHA1.Result()); if(Debug) std::clog << "QueueNextDiff: " @@ -905,10 +890,7 @@ void pkgAcqIndex::Done(string Message,unsigned long long Size,string Hash, if (!ExpectedHash.empty() && ExpectedHash.toStr() != Hash) { - Status = StatAuthError; - ErrorText = _("Hash Sum mismatch"); - Rename(DestFile,DestFile + ".FAILED"); - ReportMirrorFailure("HashChecksumFailure"); + RenameOnError(HashSumMismatch); return; } @@ -917,22 +899,18 @@ void pkgAcqIndex::Done(string Message,unsigned long long Size,string Hash, if (Verify == true) { FileFd fd(DestFile, FileFd::ReadOnly); - pkgTagSection sec; - pkgTagFile tag(&fd); - - // Only test for correctness if the file is not empty (empty is ok) - if (fd.Size() > 0) { - if (_error->PendingError() || !tag.Step(sec)) { - Status = StatError; - _error->DumpErrors(); - Rename(DestFile,DestFile + ".FAILED"); - return; - } else if (!sec.Exists("Package")) { - Status = StatError; - ErrorText = ("Encountered a section with no Package: header"); - Rename(DestFile,DestFile + ".FAILED"); - return; - } + // Only test for correctness if the file is not empty (empty is ok) + if (fd.FileSize() > 0) + { + pkgTagSection sec; + pkgTagFile tag(&fd); + + // all our current indexes have a field 'Package' in each section + if (_error->PendingError() == true || tag.Step(sec) == false || sec.Exists("Package") == false) + { + RenameOnError(InvalidFormat); + return; + } } } @@ -1023,6 +1001,8 @@ void pkgAcqIndex::Done(string Message,unsigned long long Size,string Hash, DestFile += ".decomp"; Desc.URI = decompProg + ":" + FileName; QueueURI(Desc); + + // FIXME: this points to a c++ string that goes out of scope Mode = decompProg.c_str(); } /*}}}*/ @@ -1106,8 +1086,7 @@ pkgAcqMetaSig::pkgAcqMetaSig(pkgAcquire *Owner, /*{{{*/ string Final = _config->FindDir("Dir::State::lists"); Final += URItoFileName(RealURI); - struct stat Buf; - if (stat(Final.c_str(),&Buf) == 0) + if (RealFileExists(Final) == true) { // File was already in place. It needs to be re-downloaded/verified // because Release might have changed, we do give it a differnt @@ -1119,6 +1098,19 @@ pkgAcqMetaSig::pkgAcqMetaSig(pkgAcquire *Owner, /*{{{*/ } QueueURI(Desc); +} + /*}}}*/ +pkgAcqMetaSig::~pkgAcqMetaSig() /*{{{*/ +{ + // if the file was never queued undo file-changes done in the constructor + if (QueueCounter == 1 && Status == StatIdle && FileSize == 0 && Complete == false && + LastGoodSig.empty() == false) + { + string const Final = _config->FindDir("Dir::State::lists") + URItoFileName(RealURI); + if (RealFileExists(Final) == false && RealFileExists(LastGoodSig) == true) + Rename(LastGoodSig, Final); + } + } /*}}}*/ // pkgAcqMetaSig::Custom600Headers - Insert custom request headers /*{{{*/ @@ -1328,7 +1320,14 @@ void pkgAcqMetaIndex::RetrievalDone(string Message) /*{{{*/ string FinalFile = _config->FindDir("Dir::State::lists"); FinalFile += URItoFileName(RealURI); if (SigFile == DestFile) + { SigFile = FinalFile; + // constructor of pkgAcqMetaClearSig moved it out of the way, + // now move it back in on IMS hit for the 'old' file + string const OldClearSig = DestFile + ".reverify"; + if (RealFileExists(OldClearSig) == true) + Rename(OldClearSig, FinalFile); + } DestFile = FinalFile; } Complete = true; @@ -1383,15 +1382,38 @@ void pkgAcqMetaIndex::QueueIndexes(bool verify) /*{{{*/ return; } #endif + bool transInRelease = false; + { + std::vector const keys = MetaIndexParser->MetaKeys(); + for (std::vector::const_iterator k = keys.begin(); k != keys.end(); ++k) + // FIXME: Feels wrong to check for hardcoded string here, but what should we do else… + if (k->find("Translation-") != std::string::npos) + { + transInRelease = true; + break; + } + } + for (vector ::const_iterator Target = IndexTargets->begin(); Target != IndexTargets->end(); ++Target) { HashString ExpectedIndexHash; const indexRecords::checkSum *Record = MetaIndexParser->Lookup((*Target)->MetaKey); + bool compressedAvailable = false; if (Record == NULL) { - if (verify == true && (*Target)->IsOptional() == false) + if ((*Target)->IsOptional() == true) + { + std::vector types = APT::Configuration::getCompressionTypes(); + for (std::vector::const_iterator t = types.begin(); t != types.end(); ++t) + if (MetaIndexParser->Exists(string((*Target)->MetaKey).append(".").append(*t)) == true) + { + compressedAvailable = true; + break; + } + } + else if (verify == true) { Status = StatAuthError; strprintf(ErrorText, _("Unable to find expected entry '%s' in Release file (Wrong sources.list entry or malformed file)"), (*Target)->MetaKey.c_str()); @@ -1420,8 +1442,15 @@ void pkgAcqMetaIndex::QueueIndexes(bool verify) /*{{{*/ if ((*Target)->IsSubIndex() == true) new pkgAcqSubIndex(Owner, (*Target)->URI, (*Target)->Description, (*Target)->ShortDesc, ExpectedIndexHash); - else - new pkgAcqIndexTrans(Owner, *Target, ExpectedIndexHash, MetaIndexParser); + else if (transInRelease == false || Record != NULL || compressedAvailable == true) + { + if (_config->FindB("Acquire::PDiffs",true) == true && transInRelease == true && + MetaIndexParser->Exists(string((*Target)->MetaKey).append(".diff/Index")) == true) + new pkgAcqDiffIndex(Owner, (*Target)->URI, (*Target)->Description, + (*Target)->ShortDesc, ExpectedIndexHash); + else + new pkgAcqIndexTrans(Owner, *Target, ExpectedIndexHash, MetaIndexParser); + } continue; } @@ -1523,22 +1552,19 @@ void pkgAcqMetaIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf) if (AuthPass == true) { // gpgv method failed, if we have a good signature - string LastGoodSigFile = _config->FindDir("Dir::State::lists"); - if (DestFile == SigFile) - LastGoodSigFile.append(URItoFileName(RealURI)); - else - LastGoodSigFile.append("partial/").append(URItoFileName(RealURI)).append(".gpg.reverify"); + string LastGoodSigFile = _config->FindDir("Dir::State::lists").append("partial/").append(URItoFileName(RealURI)); + if (DestFile != SigFile) + LastGoodSigFile.append(".gpg"); + LastGoodSigFile.append(".reverify"); if(FileExists(LastGoodSigFile)) { + string VerifiedSigFile = _config->FindDir("Dir::State::lists") + URItoFileName(RealURI); if (DestFile != SigFile) - { - string VerifiedSigFile = _config->FindDir("Dir::State::lists") + - URItoFileName(RealURI) + ".gpg"; - Rename(LastGoodSigFile,VerifiedSigFile); - } + VerifiedSigFile.append(".gpg"); + Rename(LastGoodSigFile, VerifiedSigFile); Status = StatTransientNetworkError; - _error->Warning(_("A error occurred during the signature " + _error->Warning(_("An error occurred during the signature " "verification. The repository is not updated " "and the previous index files will be used. " "GPG error: %s: %s\n"), @@ -1597,6 +1623,26 @@ pkgAcqMetaClearSig::pkgAcqMetaClearSig(pkgAcquire *Owner, /*{{{*/ MetaSigURI(MetaSigURI), MetaSigURIDesc(MetaSigURIDesc), MetaSigShortDesc(MetaSigShortDesc) { SigFile = DestFile; + + // keep the old InRelease around in case of transistent network errors + string const Final = _config->FindDir("Dir::State::lists") + URItoFileName(RealURI); + if (RealFileExists(Final) == true) + { + string const LastGoodSig = DestFile + ".reverify"; + Rename(Final,LastGoodSig); + } +} + /*}}}*/ +pkgAcqMetaClearSig::~pkgAcqMetaClearSig() /*{{{*/ +{ + // if the file was never queued undo file-changes done in the constructor + if (QueueCounter == 1 && Status == StatIdle && FileSize == 0 && Complete == false) + { + string const Final = _config->FindDir("Dir::State::lists") + URItoFileName(RealURI); + string const LastGoodSig = DestFile + ".reverify"; + if (RealFileExists(Final) == false && RealFileExists(LastGoodSig) == true) + Rename(LastGoodSig, Final); + } } /*}}}*/ // pkgAcqMetaClearSig::Custom600Headers - Insert custom request headers /*{{{*/ @@ -1609,7 +1655,11 @@ string pkgAcqMetaClearSig::Custom600Headers() struct stat Buf; if (stat(Final.c_str(),&Buf) != 0) - return "\nIndex-File: true\nFail-Ignore: true\n"; + { + Final = DestFile + ".reverify"; + if (stat(Final.c_str(),&Buf) != 0) + return "\nIndex-File: true\nFail-Ignore: true\n"; + } return "\nIndex-File: true\nFail-Ignore: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime); } @@ -1618,6 +1668,13 @@ void pkgAcqMetaClearSig::Failed(string Message,pkgAcquire::MethodConfig *Cnf) /* { if (AuthPass == false) { + // Remove the 'old' InRelease file if we try Release.gpg now as otherwise + // the file will stay around and gives a false-auth impression (CVE-2012-0214) + string FinalFile = _config->FindDir("Dir::State::lists"); + FinalFile.append(URItoFileName(RealURI)); + if (FileExists(FinalFile)) + unlink(FinalFile.c_str()); + new pkgAcqMetaSig(Owner, MetaSigURI, MetaSigURIDesc, MetaSigShortDesc, MetaIndexURI, MetaIndexURIDesc, MetaIndexShortDesc, @@ -1656,7 +1713,7 @@ pkgAcqArchive::pkgAcqArchive(pkgAcquire *Owner,pkgSourceList *Sources, assumption here that all the available sources for this version share the same extension.. */ // Skip not source sources, they do not have file fields. - for (; Vf.end() == false; Vf++) + for (; Vf.end() == false; ++Vf) { if ((Vf.File()->Flags & pkgCache::Flag::NotSource) != 0) continue; @@ -1679,34 +1736,40 @@ pkgAcqArchive::pkgAcqArchive(pkgAcquire *Owner,pkgSourceList *Sources, } // check if we have one trusted source for the package. if so, switch - // to "TrustedOnly" mode + // to "TrustedOnly" mode - but only if not in AllowUnauthenticated mode + bool const allowUnauth = _config->FindB("APT::Get::AllowUnauthenticated", false); + bool const debugAuth = _config->FindB("Debug::pkgAcquire::Auth", false); + bool seenUntrusted = false; for (pkgCache::VerFileIterator i = Version.FileList(); i.end() == false; ++i) { pkgIndexFile *Index; if (Sources->FindIndex(i.File(),Index) == false) continue; - if (_config->FindB("Debug::pkgAcquire::Auth", false)) - { + + if (debugAuth == true) std::cerr << "Checking index: " << Index->Describe() - << "(Trusted=" << Index->IsTrusted() << ")\n"; - } - if (Index->IsTrusted()) { + << "(Trusted=" << Index->IsTrusted() << ")" << std::endl; + + if (Index->IsTrusted() == true) + { Trusted = true; - break; + if (allowUnauth == false) + break; } + else + seenUntrusted = true; } // "allow-unauthenticated" restores apts old fetching behaviour // that means that e.g. unauthenticated file:// uris are higher // priority than authenticated http:// uris - if (_config->FindB("APT::Get::AllowUnauthenticated",false) == true) + if (allowUnauth == true && seenUntrusted == true) Trusted = false; // Select a source if (QueueNext() == false && _error->PendingError() == false) - _error->Error(_("I wasn't able to locate a file for the %s package. " - "This might mean you need to manually fix this package."), - Version.ParentPkg().Name()); + _error->Error(_("Can't find a source to download version '%s' of '%s'"), + Version.VerStr(), Version.ParentPkg().FullName(false).c_str()); } /*}}}*/ // AcqArchive::QueueNext - Queue the next file source /*{{{*/ @@ -1743,7 +1806,7 @@ bool pkgAcqArchive::QueueNext() { if(stringcasecmp(ForceHash, "sha512") == 0) ExpectedHash = HashString("SHA512", Parse.SHA512Hash()); - if(stringcasecmp(ForceHash, "sha256") == 0) + else if(stringcasecmp(ForceHash, "sha256") == 0) ExpectedHash = HashString("SHA256", Parse.SHA256Hash()); else if (stringcasecmp(ForceHash, "sha1") == 0) ExpectedHash = HashString("SHA1", Parse.SHA1Hash()); @@ -1823,7 +1886,18 @@ bool pkgAcqArchive::QueueNext() else PartialSize = Buf.st_size; } - + + // Disables download of archives - useful if no real installation follows, + // e.g. if we are just interested in proposed installation order + if (_config->FindB("Debug::pkgAcqArchive::NoQueue", false) == true) + { + Complete = true; + Local = true; + Status = StatDone; + StoreFilename = DestFile = FinalFile; + return true; + } + // Create the item Local = false; Desc.URI = Index->ArchiveURI(PkgFile); @@ -1849,18 +1923,14 @@ void pkgAcqArchive::Done(string Message,unsigned long long Size,string CalcHash, // Check the size if (Size != Version->Size) { - Status = StatError; - ErrorText = _("Size mismatch"); + RenameOnError(SizeMismatch); return; } // Check the hash if(ExpectedHash.toStr() != CalcHash) { - Status = StatError; - ErrorText = _("Hash Sum mismatch"); - if(FileExists(DestFile)) - Rename(DestFile,DestFile + ".FAILED"); + RenameOnError(HashSumMismatch); return; } @@ -2000,9 +2070,7 @@ void pkgAcqFile::Done(string Message,unsigned long long Size,string CalcHash, // Check the hash if(!ExpectedHash.empty() && ExpectedHash.toStr() != CalcHash) { - Status = StatError; - ErrorText = _("Hash Sum mismatch"); - Rename(DestFile,DestFile + ".FAILED"); + RenameOnError(HashSumMismatch); return; }