X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/4a858c3921aabe5253204063bedb2307a60f30e0..f6d4ab9ad8a2cfe52737ab620dd252cf8ceec43d:/apt-pkg/acquire-item.cc diff --git a/apt-pkg/acquire-item.cc b/apt-pkg/acquire-item.cc index aee187227..779f828d3 100644 --- a/apt-pkg/acquire-item.cc +++ b/apt-pkg/acquire-item.cc @@ -13,39 +13,72 @@ ##################################################################### */ /*}}}*/ // Include Files /*{{{*/ +#include + #include #include +#include #include -#include #include #include #include -#include #include #include - -#include - +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include #include #include #include #include #include #include +#include + +#include /*}}}*/ using namespace std; +static void printHashSumComparision(std::string const &URI, HashStringList const &Expected, HashStringList const &Actual) /*{{{*/ +{ + if (_config->FindB("Debug::Acquire::HashSumMismatch", false) == false) + return; + std::cerr << std::endl << URI << ":" << std::endl << " Expected Hash: " << std::endl; + for (HashStringList::const_iterator hs = Expected.begin(); hs != Expected.end(); ++hs) + std::cerr << "\t- " << hs->toStr() << std::endl; + std::cerr << " Actual Hash: " << std::endl; + for (HashStringList::const_iterator hs = Actual.begin(); hs != Actual.end(); ++hs) + std::cerr << "\t- " << hs->toStr() << std::endl; +} + /*}}}*/ + // Acquire::Item::Item - Constructor /*{{{*/ -// --------------------------------------------------------------------- -/* */ -pkgAcquire::Item::Item(pkgAcquire *Owner) : Owner(Owner), FileSize(0), - PartialSize(0), Mode(0), ID(0), Complete(false), - Local(false), QueueCounter(0) +#if __GNUC__ >= 4 + #pragma GCC diagnostic push + #pragma GCC diagnostic ignored "-Wdeprecated-declarations" +#endif +pkgAcquire::Item::Item(pkgAcquire *Owner, HashStringList const &ExpectedHashes) : + Owner(Owner), FileSize(0), PartialSize(0), Mode(0), ID(0), Complete(false), + Local(false), QueueCounter(0), ExpectedAdditionalItems(0), + ExpectedHashes(ExpectedHashes) { Owner->Add(this); Status = StatIdle; } +#if __GNUC__ >= 4 + #pragma GCC diagnostic pop +#endif /*}}}*/ // Acquire::Item::~Item - Destructor /*{{{*/ // --------------------------------------------------------------------- @@ -80,7 +113,7 @@ void pkgAcquire::Item::Failed(string Message,pkgAcquire::MethodConfig *Cnf) Status = StatError; Dequeue(); } - + // report mirror failure back to LP if we actually use a mirror string FailReason = LookupTag(Message, "FailReason"); if(FailReason.size() != 0) @@ -93,7 +126,7 @@ void pkgAcquire::Item::Failed(string Message,pkgAcquire::MethodConfig *Cnf) // --------------------------------------------------------------------- /* Stash status and the file size. Note that setting Complete means sub-phases of the acquire process such as decompresion are operating */ -void pkgAcquire::Item::Start(string /*Message*/,unsigned long Size) +void pkgAcquire::Item::Start(string /*Message*/,unsigned long long Size) { Status = StatFetching; if (FileSize == 0 && Complete == false) @@ -103,8 +136,8 @@ void pkgAcquire::Item::Start(string /*Message*/,unsigned long Size) // Acquire::Item::Done - Item downloaded OK /*{{{*/ // --------------------------------------------------------------------- /* */ -void pkgAcquire::Item::Done(string Message,unsigned long Size,string Hash, - pkgAcquire::MethodConfig *Cnf) +void pkgAcquire::Item::Done(string Message,unsigned long long Size,HashStringList const &/*Hash*/, + pkgAcquire::MethodConfig * /*Cnf*/) { // We just downloaded something.. string FileName = LookupTag(Message,"Filename"); @@ -124,7 +157,7 @@ void pkgAcquire::Item::Done(string Message,unsigned long Size,string Hash, /*}}}*/ // Acquire::Item::Rename - Rename a file /*{{{*/ // --------------------------------------------------------------------- -/* This helper function is used by alot of item methods as thier final +/* This helper function is used by a lot of item methods as their final step */ void pkgAcquire::Item::Rename(string From,string To) { @@ -138,7 +171,34 @@ 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) { // we only act if a mirror was used at all @@ -180,32 +240,143 @@ void pkgAcquire::Item::ReportMirrorFailure(string FailCode) _config->Find("Methods::Mirror::ProblemReporting").c_str()); } } + /*}}}*/ +// AcqSubIndex::AcqSubIndex - Constructor /*{{{*/ +// --------------------------------------------------------------------- +/* 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, + HashStringList const &ExpectedHashes) + : Item(Owner, ExpectedHashes) +{ + /* XXX: Beware: Currently this class does nothing (of value) anymore ! */ + Debug = _config->FindB("Debug::pkgAcquire::SubIndex",false); + DestFile = _config->FindDir("Dir::State::lists") + "partial/"; + DestFile += URItoFileName(URI); + Desc.URI = URI; + Desc.Description = URIDesc; + Desc.Owner = this; + Desc.ShortDesc = ShortDesc; + + QueueURI(Desc); + + if(Debug) + std::clog << "pkgAcqSubIndex: " << Desc.URI << std::endl; +} + /*}}}*/ +// AcqSubIndex::Custom600Headers - Insert custom request headers /*{{{*/ +// --------------------------------------------------------------------- +/* The only header we use is the last-modified header. */ +string pkgAcqSubIndex::Custom600Headers() const +{ + string Final = _config->FindDir("Dir::State::lists"); + Final += URItoFileName(Desc.URI); -// AcqDiffIndex::AcqDiffIndex - Constructor + struct stat Buf; + 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); +} + /*}}}*/ +void pkgAcqSubIndex::Failed(string Message,pkgAcquire::MethodConfig * /*Cnf*/)/*{{{*/ +{ + if(Debug) + std::clog << "pkgAcqSubIndex failed: " << Desc.URI << " with " << Message << std::endl; + + Complete = false; + Status = StatDone; + Dequeue(); + + // No good Index is provided +} + /*}}}*/ +void pkgAcqSubIndex::Done(string Message,unsigned long long Size,HashStringList const &Hashes, /*{{{*/ + pkgAcquire::MethodConfig *Cnf) +{ + if(Debug) + std::clog << "pkgAcqSubIndex::Done(): " << Desc.URI << std::endl; + + string FileName = LookupTag(Message,"Filename"); + if (FileName.empty() == true) + { + Status = StatError; + ErrorText = "Method gave a blank filename"; + return; + } + + if (FileName != DestFile) + { + Local = true; + Desc.URI = "copy:" + FileName; + QueueURI(Desc); + return; + } + + Item::Done(Message, Size, Hashes, Cnf); + + string FinalFile = _config->FindDir("Dir::State::lists")+URItoFileName(Desc.URI); + + /* Downloaded invalid transindex => Error (LP: #346386) (Closes: #627642) */ + indexRecords SubIndexParser; + if (FileExists(DestFile) == true && !SubIndexParser.Load(DestFile)) { + Status = StatError; + ErrorText = SubIndexParser.ErrorText; + return; + } + + // success in downloading the index + // rename the index + if(Debug) + std::clog << "Renaming: " << DestFile << " -> " << FinalFile << std::endl; + Rename(DestFile,FinalFile); + chmod(FinalFile.c_str(),0644); + DestFile = FinalFile; + + if(ParseIndex(DestFile) == false) + return Failed("", NULL); + + Complete = true; + Status = StatDone; + Dequeue(); + return; +} + /*}}}*/ +bool pkgAcqSubIndex::ParseIndex(string const &IndexFile) /*{{{*/ +{ + indexRecords SubIndexParser; + if (FileExists(IndexFile) == false || SubIndexParser.Load(IndexFile) == false) + return false; + // so something with the downloaded index + return true; +} + /*}}}*/ +// AcqDiffIndex::AcqDiffIndex - Constructor /*{{{*/ // --------------------------------------------------------------------- -/* Get the DiffIndex file first and see if there are patches availabe +/* Get the DiffIndex file first and see if there are patches available * If so, create a pkgAcqIndexDiffs fetcher that will get and apply the * patches. If anything goes wrong in that process, it will fall back to * the original packages file */ pkgAcqDiffIndex::pkgAcqDiffIndex(pkgAcquire *Owner, - string URI,string URIDesc,string ShortDesc, - HashString ExpectedHash) - : Item(Owner), RealURI(URI), ExpectedHash(ExpectedHash), - Description(URIDesc) + IndexTarget const * const Target, + HashStringList const &ExpectedHashes, + indexRecords *MetaIndexParser) + : pkgAcqBaseIndex(Owner, Target, ExpectedHashes, MetaIndexParser) { Debug = _config->FindB("Debug::pkgAcquire::Diffs",false); - Desc.Description = URIDesc + "/DiffIndex"; + RealURI = Target->URI; Desc.Owner = this; - Desc.ShortDesc = ShortDesc; - Desc.URI = URI + ".diff/Index"; + Desc.Description = Target->Description + "/DiffIndex"; + Desc.ShortDesc = Target->ShortDesc; + Desc.URI = Target->URI + ".diff/Index"; DestFile = _config->FindDir("Dir::State::lists") + "partial/"; - DestFile += URItoFileName(URI) + string(".DiffIndex"); + DestFile += URItoFileName(Desc.URI); if(Debug) std::clog << "pkgAcqDiffIndex: " << Desc.URI << std::endl; @@ -221,27 +392,25 @@ pkgAcqDiffIndex::pkgAcqDiffIndex(pkgAcquire *Owner, Desc.URI.substr(0,strlen("file:/")) == "file:/") { // we don't have a pkg file or we don't want to queue - if(Debug) - std::clog << "No index file, local or canceld by user" << std::endl; - Failed("", NULL); + Failed("No index file, local or canceld by user", NULL); return; } - if(Debug) - std::clog << "pkgAcqIndexDiffs::pkgAcqIndexDiffs(): " - << CurrentPackagesFile << std::endl; - + if(Debug) + std::clog << "pkgAcqDiffIndex::pkgAcqDiffIndex(): " + << CurrentPackagesFile << std::endl; + QueueURI(Desc); } - + /*}}}*/ // AcqIndex::Custom600Headers - Insert custom request headers /*{{{*/ // --------------------------------------------------------------------- /* The only header we use is the last-modified header. */ -string pkgAcqDiffIndex::Custom600Headers() +string pkgAcqDiffIndex::Custom600Headers() const { string Final = _config->FindDir("Dir::State::lists"); - Final += URItoFileName(RealURI) + string(".IndexDiff"); + Final += URItoFileName(Desc.URI); if(Debug) std::clog << "Custom600Header-IMS: " << Final << std::endl; @@ -252,122 +421,294 @@ string pkgAcqDiffIndex::Custom600Headers() return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime); } - - -bool pkgAcqDiffIndex::ParseDiffIndex(string IndexDiffFile) + /*}}}*/ +bool pkgAcqDiffIndex::ParseDiffIndex(string IndexDiffFile) /*{{{*/ { + // failing here is fine: our caller will take care of trying to + // get the complete file if patching fails if(Debug) - std::clog << "pkgAcqIndexDiffs::ParseIndexDiff() " << IndexDiffFile - << std::endl; + std::clog << "pkgAcqDiffIndex::ParseIndexDiff() " << IndexDiffFile + << std::endl; - pkgTagSection Tags; - string ServerSha1; - vector available_patches; - FileFd Fd(IndexDiffFile,FileFd::ReadOnly); pkgTagFile TF(&Fd); if (_error->PendingError() == true) return false; - if(TF.Step(Tags) == true) + pkgTagSection Tags; + if(unlikely(TF.Step(Tags) == false)) + return false; + + HashStringList ServerHashes; + unsigned long long ServerSize = 0; + + for (char const * const * type = HashString::SupportedHashes(); *type != NULL; ++type) { - string local_sha1; - bool found = false; - DiffInfo d; - string size; + std::string tagname = *type; + tagname.append("-Current"); + std::string const tmp = Tags.FindS(tagname.c_str()); + if (tmp.empty() == true) + continue; - string tmp = Tags.FindS("SHA1-Current"); + string hash; + unsigned long long size; std::stringstream ss(tmp); - ss >> ServerSha1; + ss >> hash >> size; + if (unlikely(hash.empty() == true)) + continue; + if (unlikely(ServerSize != 0 && ServerSize != size)) + continue; + ServerHashes.push_back(HashString(*type, hash)); + ServerSize = size; + } - FileFd fd(CurrentPackagesFile, FileFd::ReadOnly); - SHA1Summation SHA1; - SHA1.AddFD(fd.Fd(), fd.Size()); - local_sha1 = string(SHA1.Result()); + if (ServerHashes.usable() == false) + { + if (Debug == true) + std::clog << "pkgAcqDiffIndex: " << IndexDiffFile << ": Did not find a good hashsum in the index" << std::endl; + return false; + } - if(local_sha1 == ServerSha1) - { - // we have the same sha1 as the server - if(Debug) - std::clog << "Package file is up-to-date" << std::endl; - // set found to true, this will queue a pkgAcqIndexDiffs with - // a empty availabe_patches - found = true; - } - else + if (ServerHashes != HashSums()) + { + if (Debug == true) + std::clog << "pkgAcqDiffIndex: " << IndexDiffFile << ": Index has different hashes than parser, probably older, so fail pdiffing" << std::endl; + return false; + } + + if (ServerHashes.VerifyFile(CurrentPackagesFile) == true) + { + // we have the same sha1 as the server so we are done here + if(Debug) + std::clog << "pkgAcqDiffIndex: Package file is up-to-date" << std::endl; + // list cleanup needs to know that this file as well as the already + // present index is ours, so we create an empty diff to save it for us + new pkgAcqIndexDiffs(Owner, Target, ExpectedHashes, MetaIndexParser); + return true; + } + + FileFd fd(CurrentPackagesFile, FileFd::ReadOnly); + Hashes LocalHashesCalc; + LocalHashesCalc.AddFD(fd); + HashStringList const LocalHashes = LocalHashesCalc.GetHashStringList(); + + if(Debug) + std::clog << "Server-Current: " << ServerHashes.find(NULL)->toStr() << " and we start at " + << fd.Name() << " " << fd.FileSize() << " " << LocalHashes.find(NULL)->toStr() << std::endl; + + // parse all of (provided) history + vector available_patches; + bool firstAcceptedHashes = true; + for (char const * const * type = HashString::SupportedHashes(); *type != NULL; ++type) + { + if (LocalHashes.find(*type) == NULL) + continue; + + std::string tagname = *type; + tagname.append("-History"); + std::string const tmp = Tags.FindS(tagname.c_str()); + if (tmp.empty() == true) + continue; + + string hash, filename; + unsigned long long size; + std::stringstream ss(tmp); + + while (ss >> hash >> size >> filename) { - if(Debug) - std::clog << "SHA1-Current: " << ServerSha1 << std::endl; + if (unlikely(hash.empty() == true || filename.empty() == true)) + continue; - // check the historie and see what patches we need - string history = Tags.FindS("SHA1-History"); - std::stringstream hist(history); - while(hist >> d.sha1 >> size >> d.file) + // see if we have a record for this file already + std::vector::iterator cur = available_patches.begin(); + for (; cur != available_patches.end(); ++cur) + { + if (cur->file != filename || unlikely(cur->result_size != size)) + continue; + cur->result_hashes.push_back(HashString(*type, hash)); + break; + } + if (cur != available_patches.end()) + continue; + if (firstAcceptedHashes == true) { - d.size = atoi(size.c_str()); - // read until the first match is found - if(d.sha1 == local_sha1) - found=true; - // from that point on, we probably need all diffs - if(found) - { - if(Debug) - std::clog << "Need to get diff: " << d.file << std::endl; - available_patches.push_back(d); - } + DiffInfo next; + next.file = filename; + next.result_hashes.push_back(HashString(*type, hash)); + next.result_size = size; + next.patch_size = 0; + available_patches.push_back(next); + } + else + { + if (Debug == true) + std::clog << "pkgAcqDiffIndex: " << IndexDiffFile << ": File " << filename + << " wasn't in the list for the first parsed hash! (history)" << std::endl; + break; } } + firstAcceptedHashes = false; + } - // we have something, queue the next diff - if(found) + if (unlikely(available_patches.empty() == true)) + { + if (Debug) + std::clog << "pkgAcqDiffIndex: " << IndexDiffFile << ": " + << "Couldn't find any patches for the patch series." << std::endl; + return false; + } + + for (char const * const * type = HashString::SupportedHashes(); *type != NULL; ++type) + { + if (LocalHashes.find(*type) == NULL) + continue; + + std::string tagname = *type; + tagname.append("-Patches"); + std::string const tmp = Tags.FindS(tagname.c_str()); + if (tmp.empty() == true) + continue; + + string hash, filename; + unsigned long long size; + std::stringstream ss(tmp); + + while (ss >> hash >> size >> filename) { - // queue the diffs - string::size_type last_space = Description.rfind(" "); - if(last_space != string::npos) - Description.erase(last_space, Description.size()-last_space); - new pkgAcqIndexDiffs(Owner, RealURI, Description, Desc.ShortDesc, - ExpectedHash, available_patches); - Complete = false; - Status = StatDone; - Dequeue(); - return true; + if (unlikely(hash.empty() == true || filename.empty() == true)) + continue; + + // see if we have a record for this file already + std::vector::iterator cur = available_patches.begin(); + for (; cur != available_patches.end(); ++cur) + { + if (cur->file != filename) + continue; + if (unlikely(cur->patch_size != 0 && cur->patch_size != size)) + continue; + cur->patch_hashes.push_back(HashString(*type, hash)); + cur->patch_size = size; + break; + } + if (cur != available_patches.end()) + continue; + if (Debug == true) + std::clog << "pkgAcqDiffIndex: " << IndexDiffFile << ": File " << filename + << " wasn't in the list for the first parsed hash! (patches)" << std::endl; + break; } } - - // Nothing found, report and return false - // Failing here is ok, if we return false later, the full - // IndexFile is queued - if(Debug) - std::clog << "Can't find a patch in the index file" << std::endl; - return false; -} -void pkgAcqDiffIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf) + bool foundStart = false; + for (std::vector::iterator cur = available_patches.begin(); + cur != available_patches.end(); ++cur) + { + if (LocalHashes != cur->result_hashes) + continue; + + available_patches.erase(available_patches.begin(), cur); + foundStart = true; + break; + } + + if (foundStart == false || unlikely(available_patches.empty() == true)) + { + if (Debug) + std::clog << "pkgAcqDiffIndex: " << IndexDiffFile << ": " + << "Couldn't find the start of the patch series." << std::endl; + return false; + } + + // patching with too many files is rather slow compared to a fast download + unsigned long const fileLimit = _config->FindI("Acquire::PDiffs::FileLimit", 0); + if (fileLimit != 0 && fileLimit < available_patches.size()) + { + if (Debug) + std::clog << "Need " << available_patches.size() << " diffs (Limit is " << fileLimit + << ") so fallback to complete download" << std::endl; + return false; + } + + // calculate the size of all patches we have to get + // note that all sizes are uncompressed, while we download compressed files + unsigned long long patchesSize = 0; + for (std::vector::const_iterator cur = available_patches.begin(); + cur != available_patches.end(); ++cur) + patchesSize += cur->patch_size; + unsigned long long const sizeLimit = ServerSize * _config->FindI("Acquire::PDiffs::SizeLimit", 100); + if (false && sizeLimit > 0 && (sizeLimit/100) < patchesSize) + { + if (Debug) + std::clog << "Need " << patchesSize << " bytes (Limit is " << sizeLimit/100 + << ") so fallback to complete download" << std::endl; + return false; + } + + // we have something, queue the diffs + string::size_type const last_space = Description.rfind(" "); + if(last_space != string::npos) + Description.erase(last_space, Description.size()-last_space); + + /* decide if we should download patches one by one or in one go: + The first is good if the server merges patches, but many don't so client + based merging can be attempt in which case the second is better. + "bad things" will happen if patches are merged on the server, + but client side merging is attempt as well */ + bool pdiff_merge = _config->FindB("Acquire::PDiffs::Merge", true); + if (pdiff_merge == true) + { + // reprepro adds this flag if it has merged patches on the server + std::string const precedence = Tags.FindS("X-Patch-Precedence"); + pdiff_merge = (precedence != "merged"); + } + + if (pdiff_merge == false) + { + new pkgAcqIndexDiffs(Owner, Target, ExpectedHashes, MetaIndexParser, + available_patches); + } + else + { + std::vector *diffs = new std::vector(available_patches.size()); + for(size_t i = 0; i < available_patches.size(); ++i) + (*diffs)[i] = new pkgAcqIndexMergeDiffs(Owner, Target, + ExpectedHashes, + MetaIndexParser, + available_patches[i], + diffs); + } + + Complete = false; + Status = StatDone; + Dequeue(); + return true; +} + /*}}}*/ +void pkgAcqDiffIndex::Failed(string Message,pkgAcquire::MethodConfig * /*Cnf*/)/*{{{*/ { if(Debug) - std::clog << "pkgAcqDiffIndex failed: " << Desc.URI << std::endl - << "Falling back to normal index file aquire" << std::endl; + std::clog << "pkgAcqDiffIndex failed: " << Desc.URI << " with " << Message << std::endl + << "Falling back to normal index file acquire" << std::endl; - new pkgAcqIndex(Owner, RealURI, Description, Desc.ShortDesc, - ExpectedHash); + new pkgAcqIndex(Owner, Target, ExpectedHashes, MetaIndexParser); Complete = false; Status = StatDone; Dequeue(); } - -void pkgAcqDiffIndex::Done(string Message,unsigned long Size,string Md5Hash, + /*}}}*/ +void pkgAcqDiffIndex::Done(string Message,unsigned long long Size,HashStringList const &Hashes, /*{{{*/ pkgAcquire::MethodConfig *Cnf) { if(Debug) std::clog << "pkgAcqDiffIndex::Done(): " << Desc.URI << std::endl; - Item::Done(Message,Size,Md5Hash,Cnf); + Item::Done(Message, Size, Hashes, Cnf); string FinalFile; FinalFile = _config->FindDir("Dir::State::lists")+URItoFileName(RealURI); - // sucess in downloading the index + // success in downloading the index // rename the index FinalFile += string(".IndexDiff"); if(Debug) @@ -378,39 +719,38 @@ void pkgAcqDiffIndex::Done(string Message,unsigned long Size,string Md5Hash, DestFile = FinalFile; if(!ParseDiffIndex(DestFile)) - return Failed("", NULL); + return Failed("Parsing pdiff Index failed", NULL); Complete = true; Status = StatDone; Dequeue(); return; } - - - -// AcqIndexDiffs::AcqIndexDiffs - Constructor + /*}}}*/ +// AcqIndexDiffs::AcqIndexDiffs - Constructor /*{{{*/ // --------------------------------------------------------------------- /* The package diff is added to the queue. one object is constructed * for each diff and the index */ pkgAcqIndexDiffs::pkgAcqIndexDiffs(pkgAcquire *Owner, - string URI,string URIDesc,string ShortDesc, - HashString ExpectedHash, + struct IndexTarget const * const Target, + HashStringList const &ExpectedHashes, + indexRecords *MetaIndexParser, vector diffs) - : Item(Owner), RealURI(URI), ExpectedHash(ExpectedHash), + : pkgAcqBaseIndex(Owner, Target, ExpectedHashes, MetaIndexParser), available_patches(diffs) { - DestFile = _config->FindDir("Dir::State::lists") + "partial/"; - DestFile += URItoFileName(URI); + DestFile += URItoFileName(Target->URI); Debug = _config->FindB("Debug::pkgAcquire::Diffs",false); - Description = URIDesc; + RealURI = Target->URI; Desc.Owner = this; - Desc.ShortDesc = ShortDesc; + Description = Target->Description; + Desc.ShortDesc = Target->ShortDesc; - if(available_patches.size() == 0) + if(available_patches.empty() == true) { // we are done (yeah!) Finish(true); @@ -422,20 +762,17 @@ pkgAcqIndexDiffs::pkgAcqIndexDiffs(pkgAcquire *Owner, QueueNextDiff(); } } - - -void pkgAcqIndexDiffs::Failed(string Message,pkgAcquire::MethodConfig *Cnf) + /*}}}*/ +void pkgAcqIndexDiffs::Failed(string Message,pkgAcquire::MethodConfig * /*Cnf*/)/*{{{*/ { if(Debug) - std::clog << "pkgAcqIndexDiffs failed: " << Desc.URI << std::endl - << "Falling back to normal index file aquire" << std::endl; - new pkgAcqIndex(Owner, RealURI, Description,Desc.ShortDesc, - ExpectedHash); + std::clog << "pkgAcqIndexDiffs failed: " << Desc.URI << " with " << Message << std::endl + << "Falling back to normal index file acquire" << std::endl; + new pkgAcqIndex(Owner, Target, ExpectedHashes, MetaIndexParser); Finish(); } - - -// helper that cleans the item out of the fetcher queue + /*}}}*/ +// Finish - helper that cleans the item out of the fetcher queue /*{{{*/ void pkgAcqIndexDiffs::Finish(bool allDone) { // we restore the original name, this is required, otherwise @@ -445,11 +782,9 @@ void pkgAcqIndexDiffs::Finish(bool allDone) DestFile = _config->FindDir("Dir::State::lists"); DestFile += URItoFileName(RealURI); - if(!ExpectedHash.empty() && !ExpectedHash.VerifyFile(DestFile)) + if(HashSums().usable() && !HashSums().VerifyFile(DestFile)) { - Status = StatAuthError; - ErrorText = _("MD5Sum mismatch"); - Rename(DestFile,DestFile + ".FAILED"); + RenameOnError(HashSumMismatch); Dequeue(); return; } @@ -470,10 +805,8 @@ void pkgAcqIndexDiffs::Finish(bool allDone) Dequeue(); return; } - - - -bool pkgAcqIndexDiffs::QueueNextDiff() + /*}}}*/ +bool pkgAcqIndexDiffs::QueueNextDiff() /*{{{*/ { // calc sha1 of the just patched file @@ -481,78 +814,83 @@ bool pkgAcqIndexDiffs::QueueNextDiff() FinalFile += URItoFileName(RealURI); FileFd fd(FinalFile, FileFd::ReadOnly); - SHA1Summation SHA1; - SHA1.AddFD(fd.Fd(), fd.Size()); - string local_sha1 = string(SHA1.Result()); + Hashes LocalHashesCalc; + LocalHashesCalc.AddFD(fd); + HashStringList const LocalHashes = LocalHashesCalc.GetHashStringList(); + if(Debug) - std::clog << "QueueNextDiff: " - << FinalFile << " (" << local_sha1 << ")"<toStr() << ")" << std::endl; + + if (unlikely(LocalHashes.usable() == false || ExpectedHashes.usable() == false)) + { + Failed("Local/Expected hashes are not usable", NULL); + return false; + } + + // final file reached before all patches are applied + if(LocalHashes == ExpectedHashes) + { + Finish(true); + return true; + } // remove all patches until the next matching patch is found // this requires the Index file to be ordered - for(vector::iterator I=available_patches.begin(); - available_patches.size() > 0 && + for(vector::iterator I = available_patches.begin(); + available_patches.empty() == false && I != available_patches.end() && - (*I).sha1 != local_sha1; - I++) + I->result_hashes != LocalHashes; + ++I) { available_patches.erase(I); } // error checking and falling back if no patch was found - if(available_patches.size() == 0) - { - Failed("", NULL); + if(available_patches.empty() == true) + { + Failed("No patches left to reach target", NULL); return false; } // queue the right diff - Desc.URI = string(RealURI) + ".diff/" + available_patches[0].file + ".gz"; + Desc.URI = RealURI + ".diff/" + available_patches[0].file + ".gz"; Desc.Description = Description + " " + available_patches[0].file + string(".pdiff"); DestFile = _config->FindDir("Dir::State::lists") + "partial/"; DestFile += URItoFileName(RealURI + ".diff/" + available_patches[0].file); if(Debug) std::clog << "pkgAcqIndexDiffs::QueueNextDiff(): " << Desc.URI << std::endl; - + QueueURI(Desc); return true; } - - - -void pkgAcqIndexDiffs::Done(string Message,unsigned long Size,string Md5Hash, + /*}}}*/ +void pkgAcqIndexDiffs::Done(string Message,unsigned long long Size, HashStringList const &Hashes, /*{{{*/ pkgAcquire::MethodConfig *Cnf) { if(Debug) std::clog << "pkgAcqIndexDiffs::Done(): " << Desc.URI << std::endl; - Item::Done(Message,Size,Md5Hash,Cnf); + Item::Done(Message, Size, Hashes, Cnf); string FinalFile; FinalFile = _config->FindDir("Dir::State::lists")+URItoFileName(RealURI); - // sucess in downloading a diff, enter ApplyDiff state - if(State == StateFetchDiff) + // success in downloading a diff, enter ApplyDiff state + if(State == StateFetchDiff) { + FileFd fd(DestFile, FileFd::ReadOnly, FileFd::Gzip); + class Hashes LocalHashesCalc; + LocalHashesCalc.AddFD(fd); + HashStringList const LocalHashes = LocalHashesCalc.GetHashStringList(); - if(Debug) - std::clog << "Sending to gzip method: " << FinalFile << std::endl; - - string FileName = LookupTag(Message,"Filename"); - State = StateUnzipDiff; - Local = true; - Desc.URI = "gzip:" + FileName; - DestFile += ".decomp"; - QueueURI(Desc); - Mode = "gzip"; - return; - } - - // sucess in downloading a diff, enter ApplyDiff state - if(State == StateUnzipDiff) - { + if (fd.Size() != available_patches[0].patch_size || + available_patches[0].patch_hashes != LocalHashes) + { + Failed("Patch has Size/Hashsum mismatch", NULL); + return; + } // rred excepts the patch as $FinalFile.ed Rename(DestFile,FinalFile+".ed"); @@ -564,7 +902,15 @@ void pkgAcqIndexDiffs::Done(string Message,unsigned long Size,string Md5Hash, Local = true; Desc.URI = "rred:" + FinalFile; QueueURI(Desc); + ActiveSubprocess = "rred"; +#if __GNUC__ >= 4 + #pragma GCC diagnostic push + #pragma GCC diagnostic ignored "-Wdeprecated-declarations" +#endif Mode = "rred"; +#if __GNUC__ >= 4 + #pragma GCC diagnostic pop +#endif return; } @@ -574,6 +920,7 @@ void pkgAcqIndexDiffs::Done(string Message,unsigned long Size,string Md5Hash, { // remove the just applied patch available_patches.erase(available_patches.begin()); + unlink((FinalFile + ".ed").c_str()); // move into place if(Debug) @@ -585,91 +932,347 @@ void pkgAcqIndexDiffs::Done(string Message,unsigned long Size,string Md5Hash, chmod(FinalFile.c_str(),0644); // see if there is more to download - if(available_patches.size() > 0) { - new pkgAcqIndexDiffs(Owner, RealURI, Description, Desc.ShortDesc, - ExpectedHash, available_patches); + if(available_patches.empty() == false) { + new pkgAcqIndexDiffs(Owner, Target, + ExpectedHashes, MetaIndexParser, + available_patches); return Finish(); } else return Finish(true); } } + /*}}}*/ +// AcqIndexMergeDiffs::AcqIndexMergeDiffs - Constructor /*{{{*/ +pkgAcqIndexMergeDiffs::pkgAcqIndexMergeDiffs(pkgAcquire *Owner, + struct IndexTarget const * const Target, + HashStringList const &ExpectedHashes, + indexRecords *MetaIndexParser, + DiffInfo const &patch, + std::vector const * const allPatches) + : pkgAcqBaseIndex(Owner, Target, ExpectedHashes, MetaIndexParser), + patch(patch), allPatches(allPatches), State(StateFetchDiff) +{ + + DestFile = _config->FindDir("Dir::State::lists") + "partial/"; + DestFile += URItoFileName(Target->URI); + + Debug = _config->FindB("Debug::pkgAcquire::Diffs",false); + + RealURI = Target->URI; + Desc.Owner = this; + Description = Target->Description; + Desc.ShortDesc = Target->ShortDesc; + + Desc.URI = RealURI + ".diff/" + patch.file + ".gz"; + Desc.Description = Description + " " + patch.file + string(".pdiff"); + DestFile = _config->FindDir("Dir::State::lists") + "partial/"; + DestFile += URItoFileName(RealURI + ".diff/" + patch.file); + + if(Debug) + std::clog << "pkgAcqIndexMergeDiffs: " << Desc.URI << std::endl; + + QueueURI(Desc); +} + /*}}}*/ +void pkgAcqIndexMergeDiffs::Failed(string Message,pkgAcquire::MethodConfig * /*Cnf*/)/*{{{*/ +{ + if(Debug) + std::clog << "pkgAcqIndexMergeDiffs failed: " << Desc.URI << " with " << Message << std::endl; + Complete = false; + Status = StatDone; + Dequeue(); + + // check if we are the first to fail, otherwise we are done here + State = StateDoneDiff; + for (std::vector::const_iterator I = allPatches->begin(); + I != allPatches->end(); ++I) + if ((*I)->State == StateErrorDiff) + return; + + // first failure means we should fallback + State = StateErrorDiff; + std::clog << "Falling back to normal index file acquire" << std::endl; + new pkgAcqIndex(Owner, Target, ExpectedHashes, MetaIndexParser); +} + /*}}}*/ +void pkgAcqIndexMergeDiffs::Done(string Message,unsigned long long Size,HashStringList const &Hashes, /*{{{*/ + pkgAcquire::MethodConfig *Cnf) +{ + if(Debug) + std::clog << "pkgAcqIndexMergeDiffs::Done(): " << Desc.URI << std::endl; + + Item::Done(Message,Size,Hashes,Cnf); + + string const FinalFile = _config->FindDir("Dir::State::lists") + URItoFileName(RealURI); + if (State == StateFetchDiff) + { + FileFd fd(DestFile, FileFd::ReadOnly, FileFd::Gzip); + class Hashes LocalHashesCalc; + LocalHashesCalc.AddFD(fd); + HashStringList const LocalHashes = LocalHashesCalc.GetHashStringList(); + + if (fd.Size() != patch.patch_size || patch.patch_hashes != LocalHashes) + { + Failed("Patch has Size/Hashsum mismatch", NULL); + return; + } + + // rred expects the patch as $FinalFile.ed.$patchname.gz + Rename(DestFile, FinalFile + ".ed." + patch.file + ".gz"); + + // check if this is the last completed diff + State = StateDoneDiff; + for (std::vector::const_iterator I = allPatches->begin(); + I != allPatches->end(); ++I) + if ((*I)->State != StateDoneDiff) + { + if(Debug) + std::clog << "Not the last done diff in the batch: " << Desc.URI << std::endl; + return; + } + + // this is the last completed diff, so we are ready to apply now + State = StateApplyDiff; + + if(Debug) + std::clog << "Sending to rred method: " << FinalFile << std::endl; + Local = true; + Desc.URI = "rred:" + FinalFile; + QueueURI(Desc); + ActiveSubprocess = "rred"; +#if __GNUC__ >= 4 + #pragma GCC diagnostic push + #pragma GCC diagnostic ignored "-Wdeprecated-declarations" +#endif + Mode = "rred"; +#if __GNUC__ >= 4 + #pragma GCC diagnostic pop +#endif + return; + } + // success in download/apply all diffs, clean up + else if (State == StateApplyDiff) + { + // see if we really got the expected file + if(ExpectedHashes.usable() && !ExpectedHashes.VerifyFile(DestFile)) + { + RenameOnError(HashSumMismatch); + return; + } + + // move the result into place + if(Debug) + std::clog << "Moving patched file in place: " << std::endl + << DestFile << " -> " << FinalFile << std::endl; + Rename(DestFile, FinalFile); + chmod(FinalFile.c_str(), 0644); + + // otherwise lists cleanup will eat the file + DestFile = FinalFile; + + // ensure the ed's are gone regardless of list-cleanup + for (std::vector::const_iterator I = allPatches->begin(); + I != allPatches->end(); ++I) + { + std::string patch = FinalFile + ".ed." + (*I)->patch.file + ".gz"; + unlink(patch.c_str()); + } + + // all set and done + Complete = true; + if(Debug) + std::clog << "allDone: " << DestFile << "\n" << std::endl; + } +} + /*}}}*/ // AcqIndex::AcqIndex - Constructor /*{{{*/ // --------------------------------------------------------------------- /* The package file is added to the queue and a second class is instantiated to fetch the revision file */ pkgAcqIndex::pkgAcqIndex(pkgAcquire *Owner, string URI,string URIDesc,string ShortDesc, - HashString ExpectedHash, string comprExt) - : Item(Owner), RealURI(URI), ExpectedHash(ExpectedHash) + HashStringList const &ExpectedHash, string comprExt) + : pkgAcqBaseIndex(Owner, NULL, ExpectedHash, NULL), RealURI(URI) +{ + if(comprExt.empty() == true) + { + // autoselect the compression method + std::vector types = APT::Configuration::getCompressionTypes(); + for (std::vector::const_iterator t = types.begin(); t != types.end(); ++t) + comprExt.append(*t).append(" "); + if (comprExt.empty() == false) + comprExt.erase(comprExt.end()-1); + } + CompressionExtension = comprExt; + + Init(URI, URIDesc, ShortDesc); +} +pkgAcqIndex::pkgAcqIndex(pkgAcquire *Owner, IndexTarget const *Target, + HashStringList const &ExpectedHash, + indexRecords *MetaIndexParser) + : pkgAcqBaseIndex(Owner, Target, ExpectedHash, MetaIndexParser), + RealURI(Target->URI) { + // autoselect the compression method + std::vector types = APT::Configuration::getCompressionTypes(); + CompressionExtension = ""; + if (ExpectedHashes.usable()) + { + for (std::vector::const_iterator t = types.begin(); t != types.end(); ++t) + if (*t == "uncompressed" || MetaIndexParser->Exists(string(Target->MetaKey).append(".").append(*t)) == true) + CompressionExtension.append(*t).append(" "); + } + else + { + for (std::vector::const_iterator t = types.begin(); t != types.end(); ++t) + CompressionExtension.append(*t).append(" "); + } + if (CompressionExtension.empty() == false) + CompressionExtension.erase(CompressionExtension.end()-1); + + Init(Target->URI, Target->Description, Target->ShortDesc); +} + /*}}}*/ +// AcqIndex::Init - defered Constructor /*{{{*/ +void pkgAcqIndex::Init(string const &URI, string const &URIDesc, string const &ShortDesc) { Decompression = false; Erase = false; DestFile = _config->FindDir("Dir::State::lists") + "partial/"; DestFile += URItoFileName(URI); - if(comprExt.empty()) + std::string const comprExt = CompressionExtension.substr(0, CompressionExtension.find(' ')); + std::string MetaKey; + if (comprExt == "uncompressed") { - // autoselect the compression method - if(FileExists("/bin/bzip2")) - CompressionExtension = ".bz2"; - else - CompressionExtension = ".gz"; - } else { - CompressionExtension = comprExt; + Desc.URI = URI; + if(Target) + MetaKey = string(Target->MetaKey); + } + else + { + Desc.URI = URI + '.' + comprExt; + DestFile = DestFile + '.' + comprExt; + if(Target) + MetaKey = string(Target->MetaKey) + '.' + comprExt; + } + + // load the filesize + if(MetaIndexParser) + { + indexRecords::checkSum *Record = MetaIndexParser->Lookup(MetaKey); + if(Record) + FileSize = Record->Size; + + InitByHashIfNeeded(MetaKey); } - Desc.URI = URI + CompressionExtension; Desc.Description = URIDesc; Desc.Owner = this; Desc.ShortDesc = ShortDesc; - + QueueURI(Desc); } /*}}}*/ +// AcqIndex::AdjustForByHash - modify URI for by-hash support /*{{{*/ +// --------------------------------------------------------------------- +/* */ +void pkgAcqIndex::InitByHashIfNeeded(const std::string MetaKey) +{ + // TODO: + // - (maybe?) add support for by-hash into the sources.list as flag + // - make apt-ftparchive generate the hashes (and expire?) + std::string HostKnob = "APT::Acquire::" + ::URI(Desc.URI).Host + "::By-Hash"; + if(_config->FindB("APT::Acquire::By-Hash", false) == true || + _config->FindB(HostKnob, false) == true || + MetaIndexParser->GetSupportsAcquireByHash()) + { + indexRecords::checkSum *Record = MetaIndexParser->Lookup(MetaKey); + if(Record) + { + // FIXME: should we really use the best hash here? or a fixed one? + const HashString *TargetHash = Record->Hashes.find(""); + std::string ByHash = "/by-hash/" + TargetHash->HashType() + "/" + TargetHash->HashValue(); + size_t trailing_slash = Desc.URI.find_last_of("/"); + Desc.URI = Desc.URI.replace( + trailing_slash, + Desc.URI.substr(trailing_slash+1).size()+1, + ByHash); + } else { + _error->Warning( + "Fetching ByHash requested but can not find record for %s", + MetaKey.c_str()); + } + } +} + /*}}}*/ // AcqIndex::Custom600Headers - Insert custom request headers /*{{{*/ // --------------------------------------------------------------------- /* The only header we use is the last-modified header. */ -string pkgAcqIndex::Custom600Headers() +string pkgAcqIndex::Custom600Headers() const { + std::string const compExt = CompressionExtension.substr(0, CompressionExtension.find(' ')); string Final = _config->FindDir("Dir::State::lists"); Final += URItoFileName(RealURI); + if (_config->FindB("Acquire::GzipIndexes",false)) + Final += compExt; + string msg = "\nIndex-File: true"; + struct stat Buf; - if (stat(Final.c_str(),&Buf) != 0) - return "\nIndex-File: true"; - return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime); + if (stat(Final.c_str(),&Buf) == 0) + msg += "\nLast-Modified: " + TimeRFC1123(Buf.st_mtime); + + return msg; } /*}}}*/ - -void pkgAcqIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf) +void pkgAcqIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf) /*{{{*/ { - // no .bz2 found, retry with .gz - if(Desc.URI.substr(Desc.URI.size()-3) == "bz2") { - Desc.URI = Desc.URI.substr(0,Desc.URI.size()-3) + "gz"; - - // retry with a gzip one - new pkgAcqIndex(Owner, RealURI, Desc.Description,Desc.ShortDesc, - ExpectedHash, string(".gz")); - Status = StatDone; - Complete = false; - Dequeue(); + size_t const nextExt = CompressionExtension.find(' '); + if (nextExt != std::string::npos) + { + CompressionExtension = CompressionExtension.substr(nextExt+1); + Init(RealURI, Desc.Description, Desc.ShortDesc); return; - } - + } + // on decompression failure, remove bad versions in partial/ - if(Decompression && Erase) { + if (Decompression && Erase) { string s = _config->FindDir("Dir::State::lists") + "partial/"; - s += URItoFileName(RealURI); + s.append(URItoFileName(RealURI)); unlink(s.c_str()); } Item::Failed(Message,Cnf); } + /*}}}*/ +// pkgAcqIndex::GetFinalFilename - Return the full final file path /*{{{*/ +std::string pkgAcqIndex::GetFinalFilename(std::string const &URI, + std::string const &compExt) +{ + std::string FinalFile = _config->FindDir("Dir::State::lists"); + FinalFile += URItoFileName(URI); + if (_config->FindB("Acquire::GzipIndexes",false) == true) + FinalFile += '.' + compExt; + return FinalFile; +} + /*}}}*/ +// AcqIndex::ReverifyAfterIMS - Reverify index after an ims-hit /*{{{*/ +void pkgAcqIndex::ReverifyAfterIMS(std::string const &FileName) +{ + std::string const compExt = CompressionExtension.substr(0, CompressionExtension.find(' ')); + if (_config->FindB("Acquire::GzipIndexes",false) == true) + DestFile += compExt; - + string FinalFile = GetFinalFilename(RealURI, compExt); + Rename(FinalFile, FileName); + Decompression = true; + Desc.URI = "copy:" + FileName; + QueueURI(Desc); +} + /*}}}*/ // AcqIndex::Done - Finished a fetch /*{{{*/ // --------------------------------------------------------------------- /* This goes through a number of states.. On the initial fetch the @@ -677,41 +1280,59 @@ void pkgAcqIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf) to the uncompressed version of the file. If this is so the file is copied into the partial directory. In all other cases the file is decompressed with a gzip uri. */ -void pkgAcqIndex::Done(string Message,unsigned long Size,string Hash, +void pkgAcqIndex::Done(string Message,unsigned long long Size,HashStringList const &Hashes, pkgAcquire::MethodConfig *Cfg) { - Item::Done(Message,Size,Hash,Cfg); + Item::Done(Message,Size,Hashes,Cfg); + std::string const compExt = CompressionExtension.substr(0, CompressionExtension.find(' ')); if (Decompression == true) { - if (_config->FindB("Debug::pkgAcquire::Auth", false)) + if (ExpectedHashes.usable() && ExpectedHashes != Hashes) { - std::cerr << std::endl << RealURI << ": Computed Hash: " << Hash; - std::cerr << " Expected Hash: " << ExpectedHash.toStr() << std::endl; + Desc.URI = RealURI; + RenameOnError(HashSumMismatch); + printHashSumComparision(RealURI, ExpectedHashes, Hashes); + return; } - if (!ExpectedHash.empty() && ExpectedHash.toStr() != Hash) + // FIXME: this can go away once we only ever download stuff that + // has a valid hash and we never do GET based probing + // + /* Always verify the index file for correctness (all indexes must + * have a Package field) (LP: #346386) (Closes: #627642) + */ + FileFd fd(DestFile, FileFd::ReadOnly, FileFd::Extension); + // Only test for correctness if the file is not empty (empty is ok) + if (fd.Size() > 0) { - Status = StatAuthError; - ErrorText = _("Hash Sum mismatch"); - Rename(DestFile,DestFile + ".FAILED"); - ReportMirrorFailure("HashChecksumFailure"); - return; + 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; + } } + // Done, move it into position - string FinalFile = _config->FindDir("Dir::State::lists"); - FinalFile += URItoFileName(RealURI); + string FinalFile = GetFinalFilename(RealURI, compExt); Rename(DestFile,FinalFile); chmod(FinalFile.c_str(),0644); - + /* We restore the original name to DestFile so that the clean operation will work OK */ DestFile = _config->FindDir("Dir::State::lists") + "partial/"; DestFile += URItoFileName(RealURI); - + if (_config->FindB("Acquire::GzipIndexes",false)) + DestFile += '.' + compExt; + // Remove the compressed version. if (Erase == true) unlink(DestFile.c_str()); + return; } @@ -722,15 +1343,20 @@ void pkgAcqIndex::Done(string Message,unsigned long Size,string Hash, string FileName = LookupTag(Message,"Alt-Filename"); if (FileName.empty() == false) { - // The files timestamp matches - if (StringToBool(LookupTag(Message,"Alt-IMS-Hit"),false) == true) - return; Decompression = true; Local = true; DestFile += ".decomp"; Desc.URI = "copy:" + FileName; QueueURI(Desc); + ActiveSubprocess = "copy"; +#if __GNUC__ >= 4 + #pragma GCC diagnostic push + #pragma GCC diagnostic ignored "-Wdeprecated-declarations" +#endif Mode = "copy"; +#if __GNUC__ >= 4 + #pragma GCC diagnostic pop +#endif return; } @@ -740,22 +1366,53 @@ void pkgAcqIndex::Done(string Message,unsigned long Size,string Hash, Status = StatError; ErrorText = "Method gave a blank filename"; } - - // The files timestamp matches - if (StringToBool(LookupTag(Message,"IMS-Hit"),false) == true) - return; if (FileName == DestFile) Erase = true; else Local = true; - - string compExt = Desc.URI.substr(Desc.URI.size()-3); - const char *decompProg; - if(compExt == "bz2") - decompProg = "bzip2"; - else if(compExt == ".gz") - decompProg = "gzip"; + + // do not reverify cdrom sources as apt-cdrom may rewrite the Packages + // file when its doing the indexcopy + if (RealURI.substr(0,6) == "cdrom:" && + StringToBool(LookupTag(Message,"IMS-Hit"),false) == true) + return; + + // The files timestamp matches, for non-local URLs reverify the local + // file, for local file, uncompress again to ensure the hashsum is still + // matching the Release file + if (!Local && StringToBool(LookupTag(Message,"IMS-Hit"),false) == true) + { + // set destfile to the final destfile + if(_config->FindB("Acquire::GzipIndexes",false) == false) + { + DestFile = _config->FindDir("Dir::State::lists") + "partial/"; + DestFile += URItoFileName(RealURI); + } + + ReverifyAfterIMS(FileName); + return; + } + string decompProg; + + // If we enable compressed indexes, queue for hash verification + if (_config->FindB("Acquire::GzipIndexes",false)) + { + DestFile = _config->FindDir("Dir::State::lists"); + DestFile += URItoFileName(RealURI) + '.' + compExt; + + Decompression = true; + Desc.URI = "copy:" + FileName; + QueueURI(Desc); + + return; + } + + // get the binary name for your used compression type + decompProg = _config->Find(string("Acquire::CompressionTypes::").append(compExt),""); + if(decompProg.empty() == false); + else if(compExt == "uncompressed") + decompProg = "copy"; else { _error->Error("Unsupported extension: %s", compExt.c_str()); return; @@ -763,26 +1420,68 @@ void pkgAcqIndex::Done(string Message,unsigned long Size,string Hash, Decompression = true; DestFile += ".decomp"; - Desc.URI = string(decompProg) + ":" + FileName; + Desc.URI = decompProg + ":" + FileName; QueueURI(Desc); - Mode = decompProg; -} + ActiveSubprocess = decompProg; +#if __GNUC__ >= 4 + #pragma GCC diagnostic push + #pragma GCC diagnostic ignored "-Wdeprecated-declarations" +#endif + Mode = ActiveSubprocess.c_str(); +#if __GNUC__ >= 4 + #pragma GCC diagnostic pop +#endif +} + /*}}}*/ // AcqIndexTrans::pkgAcqIndexTrans - Constructor /*{{{*/ // --------------------------------------------------------------------- /* The Translation file is added to the queue */ pkgAcqIndexTrans::pkgAcqIndexTrans(pkgAcquire *Owner, string URI,string URIDesc,string ShortDesc) - : pkgAcqIndex(Owner, URI, URIDesc, ShortDesc, HashString(), "") + : pkgAcqIndex(Owner, URI, URIDesc, ShortDesc, HashStringList(), "") +{ +} +pkgAcqIndexTrans::pkgAcqIndexTrans(pkgAcquire *Owner, IndexTarget const * const Target, + HashStringList const &ExpectedHashes, indexRecords *MetaIndexParser) + : pkgAcqIndex(Owner, Target, ExpectedHashes, MetaIndexParser) { + // load the filesize + indexRecords::checkSum *Record = MetaIndexParser->Lookup(string(Target->MetaKey)); + if(Record) + FileSize = Record->Size; } + /*}}}*/ +// AcqIndexTrans::Custom600Headers - Insert custom request headers /*{{{*/ +// --------------------------------------------------------------------- +string pkgAcqIndexTrans::Custom600Headers() const +{ + std::string const compExt = CompressionExtension.substr(0, CompressionExtension.find(' ')); + string Final = _config->FindDir("Dir::State::lists"); + Final += URItoFileName(RealURI); + if (_config->FindB("Acquire::GzipIndexes",false)) + Final += compExt; + struct stat Buf; + if (stat(Final.c_str(),&Buf) != 0) + return "\nFail-Ignore: true\nIndex-File: true"; + return "\nFail-Ignore: true\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime); +} /*}}}*/ // AcqIndexTrans::Failed - Silence failure messages for missing files /*{{{*/ // --------------------------------------------------------------------- /* */ void pkgAcqIndexTrans::Failed(string Message,pkgAcquire::MethodConfig *Cnf) { + size_t const nextExt = CompressionExtension.find(' '); + if (nextExt != std::string::npos) + { + CompressionExtension = CompressionExtension.substr(nextExt+1); + Init(RealURI, Desc.Description, Desc.ShortDesc); + Status = StatIdle; + return; + } + if (Cnf->LocalOnly == true || StringToBool(LookupTag(Message,"Transient-Failure"),false) == false) { @@ -792,18 +1491,17 @@ void pkgAcqIndexTrans::Failed(string Message,pkgAcquire::MethodConfig *Cnf) Dequeue(); return; } - + Item::Failed(Message,Cnf); } /*}}}*/ - -pkgAcqMetaSig::pkgAcqMetaSig(pkgAcquire *Owner, +pkgAcqMetaSig::pkgAcqMetaSig(pkgAcquire *Owner, /*{{{*/ string URI,string URIDesc,string ShortDesc, string MetaIndexURI, string MetaIndexURIDesc, string MetaIndexShortDesc, const vector* IndexTargets, indexRecords* MetaIndexParser) : - Item(Owner), RealURI(URI), MetaIndexURI(MetaIndexURI), + Item(Owner, HashStringList()), RealURI(URI), MetaIndexURI(MetaIndexURI), MetaIndexURIDesc(MetaIndexURIDesc), MetaIndexShortDesc(MetaIndexShortDesc), MetaIndexParser(MetaIndexParser), IndexTargets(IndexTargets) { @@ -823,11 +1521,10 @@ 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 + // because Release might have changed, we do give it a different // name than DestFile because otherwise the http method will // send If-Range requests and there are too many broken servers // out there that do not understand them @@ -835,13 +1532,29 @@ pkgAcqMetaSig::pkgAcqMetaSig(pkgAcquire *Owner, Rename(Final,LastGoodSig); } + // we expect the indextargets + one additional Release file + ExpectedAdditionalItems = IndexTargets->size() + 1; + 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 /*{{{*/ // --------------------------------------------------------------------- /* The only header we use is the last-modified header. */ -string pkgAcqMetaSig::Custom600Headers() +string pkgAcqMetaSig::Custom600Headers() const { struct stat Buf; if (stat(LastGoodSig.c_str(),&Buf) != 0) @@ -850,10 +1563,10 @@ string pkgAcqMetaSig::Custom600Headers() return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime); } -void pkgAcqMetaSig::Done(string Message,unsigned long Size,string MD5, +void pkgAcqMetaSig::Done(string Message,unsigned long long Size, HashStringList const &Hashes, pkgAcquire::MethodConfig *Cfg) { - Item::Done(Message,Size,MD5,Cfg); + Item::Done(Message, Size, Hashes, Cfg); string FileName = LookupTag(Message,"Filename"); if (FileName.empty() == true) @@ -874,6 +1587,9 @@ void pkgAcqMetaSig::Done(string Message,unsigned long Size,string MD5, Complete = true; + // at this point pkgAcqMetaIndex takes over + ExpectedAdditionalItems = 0; + // put the last known good file back on i-m-s hit (it will // be re-verified again) // Else do nothing, we have the new file in DestFile then @@ -887,10 +1603,13 @@ void pkgAcqMetaSig::Done(string Message,unsigned long Size,string MD5, } /*}}}*/ -void pkgAcqMetaSig::Failed(string Message,pkgAcquire::MethodConfig *Cnf) +void pkgAcqMetaSig::Failed(string Message,pkgAcquire::MethodConfig *Cnf)/*{{{*/ { string Final = _config->FindDir("Dir::State::lists") + URItoFileName(RealURI); + // at this point pkgAcqMetaIndex takes over + ExpectedAdditionalItems = 0; + // if we get a network error we fail gracefully if(Status == StatTransientNetworkError) { @@ -923,13 +1642,13 @@ void pkgAcqMetaSig::Failed(string Message,pkgAcquire::MethodConfig *Cnf) Item::Failed(Message,Cnf); } - -pkgAcqMetaIndex::pkgAcqMetaIndex(pkgAcquire *Owner, + /*}}}*/ +pkgAcqMetaIndex::pkgAcqMetaIndex(pkgAcquire *Owner, /*{{{*/ string URI,string URIDesc,string ShortDesc, string SigFile, - const vector* IndexTargets, + const vector* IndexTargets, indexRecords* MetaIndexParser) : - Item(Owner), RealURI(URI), SigFile(SigFile), IndexTargets(IndexTargets), + Item(Owner, HashStringList()), RealURI(URI), SigFile(SigFile), IndexTargets(IndexTargets), MetaIndexParser(MetaIndexParser), AuthPass(false), IMSHit(false) { DestFile = _config->FindDir("Dir::State::lists") + "partial/"; @@ -941,14 +1660,16 @@ pkgAcqMetaIndex::pkgAcqMetaIndex(pkgAcquire *Owner, Desc.ShortDesc = ShortDesc; Desc.URI = URI; + // we expect more item + ExpectedAdditionalItems = IndexTargets->size(); + QueueURI(Desc); } - /*}}}*/ // pkgAcqMetaIndex::Custom600Headers - Insert custom request headers /*{{{*/ // --------------------------------------------------------------------- /* The only header we use is the last-modified header. */ -string pkgAcqMetaIndex::Custom600Headers() +string pkgAcqMetaIndex::Custom600Headers() const { string Final = _config->FindDir("Dir::State::lists"); Final += URItoFileName(RealURI); @@ -959,11 +1680,11 @@ string pkgAcqMetaIndex::Custom600Headers() return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime); } - -void pkgAcqMetaIndex::Done(string Message,unsigned long Size,string Hash, + /*}}}*/ +void pkgAcqMetaIndex::Done(string Message,unsigned long long Size,HashStringList const &Hashes, /*{{{*/ pkgAcquire::MethodConfig *Cfg) { - Item::Done(Message,Size,Hash,Cfg); + Item::Done(Message,Size,Hashes,Cfg); // MetaIndexes are done in two passes: one to download the // metaindex with an appropriate method, and a second to verify it @@ -975,12 +1696,6 @@ void pkgAcqMetaIndex::Done(string Message,unsigned long Size,string Hash, // all cool, move Release file into place Complete = true; - - string FinalFile = _config->FindDir("Dir::State::lists"); - FinalFile += URItoFileName(RealURI); - Rename(DestFile,FinalFile); - chmod(FinalFile.c_str(),0644); - DestFile = FinalFile; } else { @@ -992,26 +1707,58 @@ void pkgAcqMetaIndex::Done(string Message,unsigned long Size,string Hash, if (SigFile == "") { // There was no signature file, so we are finished. Download - // the indexes without verification. + // the indexes and do only hashsum verification if possible + MetaIndexParser->Load(DestFile); QueueIndexes(false); } else { + // FIXME: move this into pkgAcqMetaClearSig::Done on the next + // ABI break + + // if we expect a ClearTextSignature (InRelase), ensure that + // this is what we get and if not fail to queue a + // Release/Release.gpg, see #346386 + if (SigFile == DestFile && !StartsWithGPGClearTextSignature(DestFile)) + { + Failed(Message, Cfg); + return; + } + // There was a signature file, so pass it to gpgv for // verification - if (_config->FindB("Debug::pkgAcquire::Auth", false)) std::cerr << "Metaindex acquired, queueing gpg verification (" << SigFile << "," << DestFile << ")\n"; AuthPass = true; Desc.URI = "gpgv:" + SigFile; QueueURI(Desc); - Mode = "gpgv"; + ActiveSubprocess = "gpgv"; +#if __GNUC__ >= 4 + #pragma GCC diagnostic push + #pragma GCC diagnostic ignored "-Wdeprecated-declarations" +#endif + Mode = "gpgv"; +#if __GNUC__ >= 4 + #pragma GCC diagnostic pop +#endif + return; } } -} -void pkgAcqMetaIndex::RetrievalDone(string Message) + if (Complete == true) + { + string FinalFile = _config->FindDir("Dir::State::lists"); + FinalFile += URItoFileName(RealURI); + if (SigFile == DestFile) + SigFile = FinalFile; + Rename(DestFile,FinalFile); + chmod(FinalFile.c_str(),0644); + DestFile = FinalFile; + } +} + /*}}}*/ +void pkgAcqMetaIndex::RetrievalDone(string Message) /*{{{*/ { // We have just finished downloading a Release file (it is not // verified yet) @@ -1038,12 +1785,21 @@ 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; } - -void pkgAcqMetaIndex::AuthDone(string Message) + /*}}}*/ +void pkgAcqMetaIndex::AuthDone(string Message) /*{{{*/ { // At this point, the gpgv method has succeeded, so there is a // valid signature from a key in the trusted keyring. We @@ -1066,84 +1822,147 @@ void pkgAcqMetaIndex::AuthDone(string Message) std::cerr << "Signature verification succeeded: " << DestFile << std::endl; + // do not trust any previously unverified content that we may have + string LastGoodSigFile = _config->FindDir("Dir::State::lists").append("partial/").append(URItoFileName(RealURI)); + if (DestFile != SigFile) + LastGoodSigFile.append(".gpg"); + LastGoodSigFile.append(".reverify"); + if(IMSHit == false && RealFileExists(LastGoodSigFile) == false) + { + for (vector ::const_iterator Target = IndexTargets->begin(); + Target != IndexTargets->end(); + ++Target) + { + // remove old indexes + std::string index = _config->FindDir("Dir::State::lists") + + URItoFileName((*Target)->URI); + unlink(index.c_str()); + // and also old gzipindexes + std::vector types = APT::Configuration::getCompressionTypes(); + for (std::vector::const_iterator t = types.begin(); t != types.end(); ++t) + { + index += '.' + (*t); + unlink(index.c_str()); + } + } + } + + // Download further indexes with verification QueueIndexes(true); + // is it a clearsigned MetaIndex file? + if (DestFile == SigFile) + return; + // Done, move signature file into position string VerifiedSigFile = _config->FindDir("Dir::State::lists") + URItoFileName(RealURI) + ".gpg"; Rename(SigFile,VerifiedSigFile); chmod(VerifiedSigFile.c_str(),0644); } - -void pkgAcqMetaIndex::QueueIndexes(bool verify) + /*}}}*/ +void pkgAcqMetaIndex::QueueIndexes(bool verify) /*{{{*/ { - for (vector ::const_iterator Target = IndexTargets->begin(); +#if 0 + /* Reject invalid, existing Release files (LP: #346386) (Closes: #627642) + * FIXME: Disabled; it breaks unsigned repositories without hashes */ + if (!verify && FileExists(DestFile) && !MetaIndexParser->Load(DestFile)) + { + Status = StatError; + ErrorText = MetaIndexParser->ErrorText; + 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; + } + } + + // at this point the real Items are loaded in the fetcher + ExpectedAdditionalItems = 0; + for (vector ::const_iterator Target = IndexTargets->begin(); Target != IndexTargets->end(); - Target++) + ++Target) { - HashString ExpectedIndexHash; - if (verify) + HashStringList ExpectedIndexHashes; + const indexRecords::checkSum *Record = MetaIndexParser->Lookup((*Target)->MetaKey); + bool compressedAvailable = false; + if (Record == NULL) { - const indexRecords::checkSum *Record = MetaIndexParser->Lookup((*Target)->MetaKey); - if (!Record) - { - Status = StatAuthError; - ErrorText = "Unable to find expected entry " - + (*Target)->MetaKey + " in Meta-index file (malformed Release file?)"; - return; - } - ExpectedIndexHash = Record->Hash; - if (_config->FindB("Debug::pkgAcquire::Auth", false)) - { - std::cerr << "Queueing: " << (*Target)->URI << std::endl; - std::cerr << "Expected Hash: " << ExpectedIndexHash.toStr() << std::endl; - } - if (ExpectedIndexHash.empty()) - { - Status = StatAuthError; - ErrorText = "Unable to find hash sum for " - + (*Target)->MetaKey + " in Meta-index file"; - return; - } + 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((*Target)->MetaKey + "." + *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()); + return; + } } - - // Queue Packages file (either diff or full packages files, depending - // on the users option) - if(_config->FindB("Acquire::PDiffs",false) == true) - new pkgAcqDiffIndex(Owner, (*Target)->URI, (*Target)->Description, - (*Target)->ShortDesc, ExpectedIndexHash); - else - new pkgAcqIndex(Owner, (*Target)->URI, (*Target)->Description, - (*Target)->ShortDesc, ExpectedIndexHash); - } -} - -bool pkgAcqMetaIndex::VerifyVendor(string Message) -{ -// // Maybe this should be made available from above so we don't have -// // to read and parse it every time? -// pkgVendorList List; -// List.ReadMainList(); - -// const Vendor* Vndr = NULL; -// for (std::vector::const_iterator I = GPGVOutput.begin(); I != GPGVOutput.end(); I++) -// { -// string::size_type pos = (*I).find("VALIDSIG "); -// if (_config->FindB("Debug::Vendor", false)) -// std::cerr << "Looking for VALIDSIG in \"" << (*I) << "\": pos " << pos -// << std::endl; -// if (pos != std::string::npos) -// { -// string Fingerprint = (*I).substr(pos+sizeof("VALIDSIG")); -// if (_config->FindB("Debug::Vendor", false)) -// std::cerr << "Looking for \"" << Fingerprint << "\" in vendor..." << -// std::endl; -// Vndr = List.FindVendor(Fingerprint) != ""; -// if (Vndr != NULL); -// break; -// } -// } + else + { + ExpectedIndexHashes = Record->Hashes; + if (_config->FindB("Debug::pkgAcquire::Auth", false)) + { + std::cerr << "Queueing: " << (*Target)->URI << std::endl + << "Expected Hash:" << std::endl; + for (HashStringList::const_iterator hs = ExpectedIndexHashes.begin(); hs != ExpectedIndexHashes.end(); ++hs) + std::cerr << "\t- " << hs->toStr() << std::endl; + std::cerr << "For: " << Record->MetaKeyFilename << std::endl; + } + if (verify == true && ExpectedIndexHashes.empty() == true && (*Target)->IsOptional() == false) + { + Status = StatAuthError; + strprintf(ErrorText, _("Unable to find hash sum for '%s' in Release file"), (*Target)->MetaKey.c_str()); + return; + } + } + + if ((*Target)->IsOptional() == true) + { + if ((*Target)->IsSubIndex() == true) + new pkgAcqSubIndex(Owner, (*Target)->URI, (*Target)->Description, + (*Target)->ShortDesc, ExpectedIndexHashes); + else if (transInRelease == false || Record != NULL || compressedAvailable == true) + { + if (_config->FindB("Acquire::PDiffs",true) == true && transInRelease == true && + MetaIndexParser->Exists((*Target)->MetaKey + ".diff/Index") == true) + new pkgAcqDiffIndex(Owner, *Target, ExpectedIndexHashes, MetaIndexParser); + else + new pkgAcqIndexTrans(Owner, *Target, ExpectedIndexHashes, MetaIndexParser); + } + continue; + } + + /* Queue Packages file (either diff or full packages files, depending + on the users option) - we also check if the PDiff Index file is listed + in the Meta-Index file. Ideal would be if pkgAcqDiffIndex would test this + instead, but passing the required info to it is to much hassle */ + if(_config->FindB("Acquire::PDiffs",true) == true && (verify == false || + MetaIndexParser->Exists((*Target)->MetaKey + ".diff/Index") == true)) + new pkgAcqDiffIndex(Owner, *Target, ExpectedIndexHashes, MetaIndexParser); + else + new pkgAcqIndex(Owner, *Target, ExpectedIndexHashes, MetaIndexParser); + } +} + /*}}}*/ +bool pkgAcqMetaIndex::VerifyVendor(string Message) /*{{{*/ +{ string::size_type pos; // check for missing sigs (that where not fatal because otherwise we had @@ -1159,7 +1978,7 @@ bool pkgAcqMetaIndex::VerifyVendor(string Message) missingkeys += (Fingerprint); } if(!missingkeys.empty()) - _error->Warning("%s", string(msg+missingkeys).c_str()); + _error->Warning("%s", (msg + missingkeys).c_str()); string Transformed = MetaIndexParser->GetExpectedDist(); @@ -1179,6 +1998,19 @@ bool pkgAcqMetaIndex::VerifyVendor(string Message) Transformed = ""; } + if (_config->FindB("Acquire::Check-Valid-Until", true) == true && + MetaIndexParser->GetValidUntil() > 0) { + time_t const invalid_since = time(NULL) - MetaIndexParser->GetValidUntil(); + if (invalid_since > 0) + // TRANSLATOR: The first %s is the URL of the bad Release file, the second is + // the time since then the file is invalid - formated in the same way as in + // the download progress display (e.g. 7d 3h 42min 1s) + return _error->Error( + _("Release file for %s is expired (invalid since %s). " + "Updates for this repository will not be applied."), + RealURI.c_str(), TimeToStr(invalid_since).c_str()); + } + if (_config->FindB("Debug::pkgAcquire::Auth", false)) { std::cerr << "Got Codename: " << MetaIndexParser->GetDist() << std::endl; @@ -1196,7 +2028,7 @@ bool pkgAcqMetaIndex::VerifyVendor(string Message) // return false; if (!Transformed.empty()) { - _error->Warning("Conflicting distribution: %s (expected %s but got %s)", + _error->Warning(_("Conflicting distribution: %s (expected %s but got %s)"), Desc.Description.c_str(), Transformed.c_str(), MetaIndexParser->GetDist().c_str()); @@ -1205,32 +2037,41 @@ bool pkgAcqMetaIndex::VerifyVendor(string Message) return true; } - /*}}}*/ -// pkgAcqMetaIndex::Failed - no Release file present or no signature -// file present /*{{{*/ + /*}}}*/ +// pkgAcqMetaIndex::Failed - no Release file present or no signature file present /*{{{*/ // --------------------------------------------------------------------- /* */ -void pkgAcqMetaIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf) +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") + - "partial/" + URItoFileName(RealURI) + ".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) + ".gpg"; - Rename(LastGoodSigFile,VerifiedSigFile); + string VerifiedSigFile = _config->FindDir("Dir::State::lists") + URItoFileName(RealURI); + if (DestFile != SigFile) + 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." + "and the previous index files will be used. " "GPG error: %s: %s\n"), Desc.Description.c_str(), LookupTag(Message,"Message").c_str()); RunScripts("APT::Update::Auth-Failure"); return; + } else if (LookupTag(Message,"Message").find("NODATA") != string::npos) { + /* Invalid signature file, reject (LP: #346386) (Closes: #627642) */ + _error->Error(_("GPG error: %s: %s"), + Desc.Description.c_str(), + LookupTag(Message,"Message").c_str()); + return; } else { _error->Warning(_("GPG error: %s: %s"), Desc.Description.c_str(), @@ -1240,13 +2081,113 @@ void pkgAcqMetaIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf) ReportMirrorFailure("GPGFailure"); } + /* Always move the meta index, even if gpgv failed. This ensures + * that PackageFile objects are correctly filled in */ + if (FileExists(DestFile)) { + string FinalFile = _config->FindDir("Dir::State::lists"); + FinalFile += URItoFileName(RealURI); + /* InRelease files become Release files, otherwise + * they would be considered as trusted later on */ + if (SigFile == DestFile) { + RealURI = RealURI.replace(RealURI.rfind("InRelease"), 9, + "Release"); + FinalFile = FinalFile.replace(FinalFile.rfind("InRelease"), 9, + "Release"); + SigFile = FinalFile; + } + Rename(DestFile,FinalFile); + chmod(FinalFile.c_str(),0644); + + DestFile = FinalFile; + } + // No Release file was present, or verification failed, so fall // back to queueing Packages files without verification QueueIndexes(false); } + /*}}}*/ +pkgAcqMetaClearSig::pkgAcqMetaClearSig(pkgAcquire *Owner, /*{{{*/ + string const &URI, string const &URIDesc, string const &ShortDesc, + string const &MetaIndexURI, string const &MetaIndexURIDesc, string const &MetaIndexShortDesc, + string const &MetaSigURI, string const &MetaSigURIDesc, string const &MetaSigShortDesc, + const vector* IndexTargets, + indexRecords* MetaIndexParser) : + pkgAcqMetaIndex(Owner, URI, URIDesc, ShortDesc, "", IndexTargets, MetaIndexParser), + MetaIndexURI(MetaIndexURI), MetaIndexURIDesc(MetaIndexURIDesc), MetaIndexShortDesc(MetaIndexShortDesc), + MetaSigURI(MetaSigURI), MetaSigURIDesc(MetaSigURIDesc), MetaSigShortDesc(MetaSigShortDesc) +{ + SigFile = DestFile; + + // index targets + (worst case:) Release/Release.gpg + ExpectedAdditionalItems = IndexTargets->size() + 2; + + + // 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 /*{{{*/ +// --------------------------------------------------------------------- +// FIXME: this can go away once the InRelease file is used widely +string pkgAcqMetaClearSig::Custom600Headers() const +{ + string Final = _config->FindDir("Dir::State::lists"); + Final += URItoFileName(RealURI); + + struct stat Buf; + if (stat(Final.c_str(),&Buf) != 0) + { + 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); +} /*}}}*/ +void pkgAcqMetaClearSig::Failed(string Message,pkgAcquire::MethodConfig *Cnf) /*{{{*/ +{ + // we failed, we will not get additional items from this method + ExpectedAdditionalItems = 0; + + 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, + IndexTargets, MetaIndexParser); + if (Cnf->LocalOnly == true || + StringToBool(LookupTag(Message, "Transient-Failure"), false) == false) + Dequeue(); + } + else + pkgAcqMetaIndex::Failed(Message, Cnf); +} + /*}}}*/ // AcqArchive::AcqArchive - Constructor /*{{{*/ // --------------------------------------------------------------------- /* This just sets up the initial fetch environment and queues the first @@ -1254,7 +2195,7 @@ void pkgAcqMetaIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf) pkgAcqArchive::pkgAcqArchive(pkgAcquire *Owner,pkgSourceList *Sources, pkgRecords *Recs,pkgCache::VerIterator const &Version, string &StoreFilename) : - Item(Owner), Version(Version), Sources(Sources), Recs(Recs), + Item(Owner, HashStringList()), Version(Version), Sources(Sources), Recs(Recs), StoreFilename(StoreFilename), Vf(Version.FileList()), Trusted(false) { @@ -1265,7 +2206,7 @@ pkgAcqArchive::pkgAcqArchive(pkgAcquire *Owner,pkgSourceList *Sources, _error->Error(_("I wasn't able to locate a file for the %s package. " "This might mean you need to manually fix this package. " "(due to missing arch)"), - Version.ParentPkg().Name()); + Version.ParentPkg().FullName().c_str()); return; } @@ -1273,7 +2214,7 @@ 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; @@ -1296,34 +2237,40 @@ pkgAcqArchive::pkgAcqArchive(pkgAcquire *Owner,pkgSourceList *Sources, } // check if we have one trusted source for the package. if so, switch - // to "TrustedOnly" mode - for (pkgCache::VerFileIterator i = Version.FileList(); i.end() == false; i++) + // 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 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 /*{{{*/ @@ -1332,8 +2279,8 @@ pkgAcqArchive::pkgAcqArchive(pkgAcquire *Owner,pkgSourceList *Sources, the archive is already available in the cache and stashs the MD5 for checking later. */ bool pkgAcqArchive::QueueNext() -{ - for (; Vf.end() == false; Vf++) +{ + for (; Vf.end() == false; ++Vf) { // Ignore not source sources if ((Vf.File()->Flags & pkgCache::Flag::NotSource) != 0) @@ -1353,14 +2300,10 @@ bool pkgAcqArchive::QueueNext() pkgRecords::Parser &Parse = Recs->Lookup(Vf); if (_error->PendingError() == true) return false; - + string PkgFile = Parse.FileName(); - if(Parse.SHA256Hash() != "") - ExpectedHash = HashString("SHA256", Parse.SHA256Hash()); - else if (Parse.SHA1Hash() != "") - ExpectedHash = HashString("SHA1", Parse.SHA1Hash()); - else - ExpectedHash = HashString("MD5Sum", Parse.MD5Hash()); + ExpectedHashes = Parse.Hashes(); + if (PkgFile.empty() == true) return _error->Error(_("The package index files are corrupted. No Filename: " "field for package %s."), @@ -1369,7 +2312,7 @@ bool pkgAcqArchive::QueueNext() Desc.URI = Index->ArchiveURI(PkgFile); Desc.Description = Index->ArchiveInfo(Version); Desc.Owner = this; - Desc.ShortDesc = Version.ParentPkg().Name(); + Desc.ShortDesc = Version.ParentPkg().FullName(true); // See if we already have the file. (Legacy filenames) FileSize = Version->Size; @@ -1378,7 +2321,7 @@ bool pkgAcqArchive::QueueNext() if (stat(FinalFile.c_str(),&Buf) == 0) { // Make sure the size matches - if ((unsigned)Buf.st_size == Version->Size) + if ((unsigned long long)Buf.st_size == Version->Size) { Complete = true; Local = true; @@ -1397,7 +2340,7 @@ bool pkgAcqArchive::QueueNext() if (stat(FinalFile.c_str(),&Buf) == 0) { // Make sure the size matches - if ((unsigned)Buf.st_size == Version->Size) + if ((unsigned long long)Buf.st_size == Version->Size) { Complete = true; Local = true; @@ -1406,7 +2349,7 @@ bool pkgAcqArchive::QueueNext() return true; } - /* Hmm, we have a file and its size does not match, this shouldnt + /* Hmm, we have a file and its size does not match, this shouldn't happen.. */ unlink(FinalFile.c_str()); } @@ -1417,21 +2360,28 @@ bool pkgAcqArchive::QueueNext() if (stat(DestFile.c_str(),&Buf) == 0) { // Hmm, the partial file is too big, erase it - if ((unsigned)Buf.st_size > Version->Size) + if ((unsigned long long)Buf.st_size > Version->Size) unlink(DestFile.c_str()); 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); - Desc.Description = Index->ArchiveInfo(Version); - Desc.Owner = this; - Desc.ShortDesc = Version.ParentPkg().Name(); QueueURI(Desc); - Vf++; + ++Vf; return true; } return false; @@ -1440,26 +2390,23 @@ bool pkgAcqArchive::QueueNext() // AcqArchive::Done - Finished fetching /*{{{*/ // --------------------------------------------------------------------- /* */ -void pkgAcqArchive::Done(string Message,unsigned long Size,string CalcHash, +void pkgAcqArchive::Done(string Message,unsigned long long Size, HashStringList const &CalcHashes, pkgAcquire::MethodConfig *Cfg) { - Item::Done(Message,Size,CalcHash,Cfg); + Item::Done(Message, Size, CalcHashes, Cfg); // Check the size if (Size != Version->Size) { - Status = StatError; - ErrorText = _("Size mismatch"); + RenameOnError(SizeMismatch); return; } - - // Check the hash - if(ExpectedHash.toStr() != CalcHash) + + // FIXME: could this empty() check impose *any* sort of security issue? + if(ExpectedHashes.usable() && ExpectedHashes != CalcHashes) { - Status = StatError; - ErrorText = _("Hash Sum mismatch"); - if(FileExists(DestFile)) - Rename(DestFile,DestFile + ".FAILED"); + RenameOnError(HashSumMismatch); + printHashSumComparision(DestFile, ExpectedHashes, CalcHashes); return; } @@ -1505,7 +2452,7 @@ void pkgAcqArchive::Failed(string Message,pkgAcquire::MethodConfig *Cnf) StringToBool(LookupTag(Message,"Transient-Failure"),false) == true) { // Vf = Version.FileList(); - while (Vf.end() == false) Vf++; + while (Vf.end() == false) ++Vf; StoreFilename = string(); Item::Failed(Message,Cnf); return; @@ -1529,14 +2476,13 @@ void pkgAcqArchive::Failed(string Message,pkgAcquire::MethodConfig *Cnf) } } /*}}}*/ -// AcqArchive::IsTrusted - Determine whether this archive comes from a -// trusted source /*{{{*/ +// AcqArchive::IsTrusted - Determine whether this archive comes from a trusted source /*{{{*/ // --------------------------------------------------------------------- -bool pkgAcqArchive::IsTrusted() +APT_PURE bool pkgAcqArchive::IsTrusted() const { return Trusted; } - + /*}}}*/ // AcqArchive::Finished - Fetching has finished, tidy up /*{{{*/ // --------------------------------------------------------------------- /* */ @@ -1548,14 +2494,14 @@ void pkgAcqArchive::Finished() StoreFilename = string(); } /*}}}*/ - // AcqFile::pkgAcqFile - Constructor /*{{{*/ // --------------------------------------------------------------------- /* The file is added to the queue */ -pkgAcqFile::pkgAcqFile(pkgAcquire *Owner,string URI,string Hash, - unsigned long Size,string Dsc,string ShortDesc, - const string &DestDir, const string &DestFilename) : - Item(Owner), ExpectedHash(Hash) +pkgAcqFile::pkgAcqFile(pkgAcquire *Owner,string URI, HashStringList const &Hashes, + unsigned long long Size,string Dsc,string ShortDesc, + const string &DestDir, const string &DestFilename, + bool IsIndexFile) : + Item(Owner, Hashes), IsIndexFile(IsIndexFile) { Retries = _config->FindI("Acquire::Retries",0); @@ -1580,7 +2526,7 @@ pkgAcqFile::pkgAcqFile(pkgAcquire *Owner,string URI,string Hash, if (stat(DestFile.c_str(),&Buf) == 0) { // Hmm, the partial file is too big, erase it - if ((unsigned)Buf.st_size > Size) + if ((Size > 0) && (unsigned long long)Buf.st_size > Size) unlink(DestFile.c_str()); else PartialSize = Buf.st_size; @@ -1592,17 +2538,16 @@ pkgAcqFile::pkgAcqFile(pkgAcquire *Owner,string URI,string Hash, // AcqFile::Done - Item downloaded OK /*{{{*/ // --------------------------------------------------------------------- /* */ -void pkgAcqFile::Done(string Message,unsigned long Size,string CalcHash, +void pkgAcqFile::Done(string Message,unsigned long long Size,HashStringList const &CalcHashes, pkgAcquire::MethodConfig *Cnf) { - Item::Done(Message,Size,CalcHash,Cnf); + Item::Done(Message,Size,CalcHashes,Cnf); // Check the hash - if(!ExpectedHash.empty() && ExpectedHash.toStr() != CalcHash) + if(ExpectedHashes.usable() && ExpectedHashes != CalcHashes) { - Status = StatError; - ErrorText = "Hash Sum mismatch"; - Rename(DestFile,DestFile + ".FAILED"); + RenameOnError(HashSumMismatch); + printHashSumComparision(DestFile, ExpectedHashes, CalcHashes); return; } @@ -1670,3 +2615,13 @@ void pkgAcqFile::Failed(string Message,pkgAcquire::MethodConfig *Cnf) Item::Failed(Message,Cnf); } /*}}}*/ +// AcqIndex::Custom600Headers - Insert custom request headers /*{{{*/ +// --------------------------------------------------------------------- +/* The only header we use is the last-modified header. */ +string pkgAcqFile::Custom600Headers() const +{ + if (IsIndexFile) + return "\nIndex-File: true"; + return ""; +} + /*}}}*/