// -*- mode: cpp; mode: fold -*- // Description /*{{{*/ // $Id: acquire-item.cc,v 1.23 1999/02/01 08:11:57 jgg Exp $ /* ###################################################################### Acquire Item - Item to acquire Each item can download to exactly one file at a time. This means you cannot create an item that fetches two uri's to two files at the same time. The pkgAcqIndex class creates a second class upon instantiation to fetch the other index files because of this. ##################################################################### */ /*}}}*/ // Include Files /*{{{*/ #ifdef __GNUG__ #pragma implementation "apt-pkg/acquire-item.h" #endif #include <apt-pkg/acquire-item.h> #include <apt-pkg/configuration.h> #include <apt-pkg/error.h> #include <apt-pkg/strutl.h> #include <sys/stat.h> #include <unistd.h> #include <errno.h> #include <string.h> #include <stdio.h> /*}}}*/ // Acquire::Item::Item - Constructor /*{{{*/ // --------------------------------------------------------------------- /* */ pkgAcquire::Item::Item(pkgAcquire *Owner) : Owner(Owner), FileSize(0), Mode(0), ID(0), Complete(false), Local(false), QueueCounter(0) { Owner->Add(this); Status = StatIdle; } /*}}}*/ // Acquire::Item::~Item - Destructor /*{{{*/ // --------------------------------------------------------------------- /* */ pkgAcquire::Item::~Item() { Owner->Remove(this); } /*}}}*/ // Acquire::Item::Failed - Item failed to download /*{{{*/ // --------------------------------------------------------------------- /* We return to an idle state if there are still other queues that could fetch this object */ void pkgAcquire::Item::Failed(string Message,pkgAcquire::MethodConfig *Cnf) { Status = StatIdle; ErrorText = LookupTag(Message,"Message"); if (QueueCounter <= 1) { /* This indicates that the file is not available right now but might be sometime later. If we do a retry cycle then this should be retried [CDROMs] */ if (Cnf->LocalOnly == true && StringToBool(LookupTag(Message,"Transient-Failure"),false) == true) { Status = StatIdle; Dequeue(); return; } Status = StatError; Dequeue(); } } /*}}}*/ // Acquire::Item::Start - Item has begun to download /*{{{*/ // --------------------------------------------------------------------- /* 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) { Status = StatFetching; if (FileSize == 0 && Complete == false) FileSize = Size; } /*}}}*/ // Acquire::Item::Done - Item downloaded OK /*{{{*/ // --------------------------------------------------------------------- /* */ void pkgAcquire::Item::Done(string Message,unsigned long Size,string) { // We just downloaded something.. string FileName = LookupTag(Message,"Filename"); if (Complete == false && FileName == DestFile) { if (Owner->Log != 0) Owner->Log->Fetched(Size,atoi(LookupTag(Message,"Resume-Point","0").c_str())); } Status = StatDone; ErrorText = string(); Owner->Dequeue(this); } /*}}}*/ // Acquire::Item::Rename - Rename a file /*{{{*/ // --------------------------------------------------------------------- /* This helper function is used by alot of item methods as thier final step */ void pkgAcquire::Item::Rename(string From,string To) { if (rename(From.c_str(),To.c_str()) != 0) { char S[300]; sprintf(S,"rename failed, %s (%s -> %s).",strerror(errno), From.c_str(),To.c_str()); Status = StatError; ErrorText = S; } } /*}}}*/ // 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,const pkgSourceList::Item *Location) : Item(Owner), Location(Location) { Decompression = false; Erase = false; DestFile = _config->FindDir("Dir::State::lists") + "partial/"; DestFile += URItoFileName(Location->PackagesURI()); // Create the item Desc.URI = Location->PackagesURI() + ".gz"; Desc.Description = Location->PackagesInfo(); Desc.Owner = this; // Set the short description to the archive component if (Location->Dist[Location->Dist.size() - 1] == '/') Desc.ShortDesc = Location->Dist; else Desc.ShortDesc = Location->Dist + '/' + Location->Section; QueueURI(Desc); // Create the Release fetch class new pkgAcqIndexRel(Owner,Location); } /*}}}*/ // AcqIndex::Custom600Headers - Insert custom request headers /*{{{*/ // --------------------------------------------------------------------- /* The only header we use is the last-modified header. */ string pkgAcqIndex::Custom600Headers() { string Final = _config->FindDir("Dir::State::lists"); Final += URItoFileName(Location->PackagesURI()); struct stat Buf; if (stat(Final.c_str(),&Buf) != 0) return "\nIndex-File: true"; return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime); } /*}}}*/ // AcqIndex::Done - Finished a fetch /*{{{*/ // --------------------------------------------------------------------- /* This goes through a number of states.. On the initial fetch the method could possibly return an alternate filename which points 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 MD5) { Item::Done(Message,Size,MD5); if (Decompression == true) { // Done, move it into position string FinalFile = _config->FindDir("Dir::State::lists"); FinalFile += URItoFileName(Location->PackagesURI()); Rename(DestFile,FinalFile); /* We restore the original name to DestFile so that the clean operation will work OK */ DestFile = _config->FindDir("Dir::State::lists") + "partial/"; DestFile += URItoFileName(Location->PackagesURI()); // Remove the compressed version. if (Erase == true) unlink(DestFile.c_str()); return; } Erase = false; Complete = true; // Handle the unzipd case 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); Mode = "copy"; return; } FileName = LookupTag(Message,"Filename"); if (FileName.empty() == true) { 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; Decompression = true; DestFile += ".decomp"; Desc.URI = "gzip:" + FileName,Location->PackagesInfo(); QueueURI(Desc); Mode = "gzip"; } /*}}}*/ // AcqIndex::Describe - Describe the Item /*{{{*/ // --------------------------------------------------------------------- /* */ string pkgAcqIndex::Describe() { return Location->PackagesURI(); } /*}}}*/ // AcqIndexRel::pkgAcqIndexRel - Constructor /*{{{*/ // --------------------------------------------------------------------- /* The Release file is added to the queue */ pkgAcqIndexRel::pkgAcqIndexRel(pkgAcquire *Owner, const pkgSourceList::Item *Location) : Item(Owner), Location(Location) { DestFile = _config->FindDir("Dir::State::lists") + "partial/"; DestFile += URItoFileName(Location->ReleaseURI()); // Create the item Desc.URI = Location->ReleaseURI(); Desc.Description = Location->ReleaseInfo(); Desc.Owner = this; // Set the short description to the archive component if (Location->Dist[Location->Dist.size() - 1] == '/') Desc.ShortDesc = Location->Dist; else Desc.ShortDesc = Location->Dist + '/' + Location->Section; QueueURI(Desc); } /*}}}*/ // AcqIndexRel::Custom600Headers - Insert custom request headers /*{{{*/ // --------------------------------------------------------------------- /* The only header we use is the last-modified header. */ string pkgAcqIndexRel::Custom600Headers() { string Final = _config->FindDir("Dir::State::lists"); Final += URItoFileName(Location->ReleaseURI()); struct stat Buf; if (stat(Final.c_str(),&Buf) != 0) return "\nIndex-File: true"; return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime); } /*}}}*/ // AcqIndexRel::Done - Item downloaded OK /*{{{*/ // --------------------------------------------------------------------- /* The release file was not placed into the download directory then a copy URI is generated and it is copied there otherwise the file in the partial directory is moved into .. and the URI is finished. */ void pkgAcqIndexRel::Done(string Message,unsigned long Size,string MD5) { Item::Done(Message,Size,MD5); string FileName = LookupTag(Message,"Filename"); if (FileName.empty() == true) { Status = StatError; ErrorText = "Method gave a blank filename"; return; } Complete = true; // The files timestamp matches if (StringToBool(LookupTag(Message,"IMS-Hit"),false) == true) return; // We have to copy it into place if (FileName != DestFile) { Local = true; Desc.URI = "copy:" + FileName; QueueURI(Desc); return; } // Done, move it into position string FinalFile = _config->FindDir("Dir::State::lists"); FinalFile += URItoFileName(Location->ReleaseURI()); Rename(DestFile,FinalFile); } /*}}}*/ // AcqIndexRel::Describe - Describe the Item /*{{{*/ // --------------------------------------------------------------------- /* */ string pkgAcqIndexRel::Describe() { return Location->ReleaseURI(); } /*}}}*/ // AcqIndexRel::Failed - Silence failure messages for missing rel files /*{{{*/ // --------------------------------------------------------------------- /* */ void pkgAcqIndexRel::Failed(string Message,pkgAcquire::MethodConfig *Cnf) { // This is the retry counter if (Cnf->LocalOnly == true || StringToBool(LookupTag(Message,"Transient-Failure"),false) == false) { Status = StatIdle; Dequeue(); return; } Item::Failed(Message,Cnf); } /*}}}*/ // AcqArchive::AcqArchive - Constructor /*{{{*/ // --------------------------------------------------------------------- /* This just sets up the initial fetch environment and queues the first possibilitiy */ pkgAcqArchive::pkgAcqArchive(pkgAcquire *Owner,pkgSourceList *Sources, pkgRecords *Recs,pkgCache::VerIterator const &Version, string &StoreFilename) : Item(Owner), Version(Version), Sources(Sources), Recs(Recs), StoreFilename(StoreFilename), Vf(Version.FileList()) { Retries = _config->FindI("Acquire::Retries",0); // Generate the final file name as: package_version_arch.deb StoreFilename = QuoteString(Version.ParentPkg().Name(),"_:") + '_' + QuoteString(Version.VerStr(),"_:") + '_' + QuoteString(Version.Arch(),"_:.") + ".deb"; // 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()); } /*}}}*/ // AcqArchive::QueueNext - Queue the next file source /*{{{*/ // --------------------------------------------------------------------- /* This queues the next available file version for download. It checks if the archive is already available in the cache and stashs the MD5 for checking later. */ bool pkgAcqArchive::QueueNext() { for (; Vf.end() == false; Vf++) { // Ignore not source sources if ((Vf.File()->Flags & pkgCache::Flag::NotSource) != 0) continue; // Try to cross match against the source list string PkgFile = flNotDir(Vf.File().FileName()); pkgSourceList::const_iterator Location; for (Location = Sources->begin(); Location != Sources->end(); Location++) if (PkgFile == URItoFileName(Location->PackagesURI())) break; if (Location == Sources->end()) continue; // Grab the text package record pkgRecords::Parser &Parse = Recs->Lookup(Vf); if (_error->PendingError() == true) return false; PkgFile = Parse.FileName(); MD5 = Parse.MD5Hash(); if (PkgFile.empty() == true) return _error->Error("The package index files are corrupted. No Filename: " "field for package %s." ,Version.ParentPkg().Name()); // See if we already have the file. (Legacy filenames) FileSize = Version->Size; string FinalFile = _config->FindDir("Dir::Cache::Archives") + flNotDir(PkgFile); struct stat Buf; if (stat(FinalFile.c_str(),&Buf) == 0) { // Make sure the size matches if ((unsigned)Buf.st_size == Version->Size) { Complete = true; Local = true; Status = StatDone; StoreFilename = DestFile = FinalFile; return true; } /* Hmm, we have a file and its size does not match, this shouldnt happen.. */ unlink(FinalFile.c_str()); } // Check it again using the new style output filenames FinalFile = _config->FindDir("Dir::Cache::Archives") + flNotDir(StoreFilename); if (stat(FinalFile.c_str(),&Buf) == 0) { // Make sure the size matches if ((unsigned)Buf.st_size == Version->Size) { Complete = true; Local = true; Status = StatDone; StoreFilename = DestFile = FinalFile; return true; } /* Hmm, we have a file and its size does not match, this shouldnt happen.. */ unlink(FinalFile.c_str()); } DestFile = _config->FindDir("Dir::Cache::Archives") + "partial/" + flNotDir(StoreFilename); // Create the item Desc.URI = Location->ArchiveURI(PkgFile); Desc.Description = Location->ArchiveInfo(Version); Desc.Owner = this; Desc.ShortDesc = Version.ParentPkg().Name(); QueueURI(Desc); Vf++; return true; } return false; } /*}}}*/ // AcqArchive::Done - Finished fetching /*{{{*/ // --------------------------------------------------------------------- /* */ void pkgAcqArchive::Done(string Message,unsigned long Size,string Md5Hash) { Item::Done(Message,Size,Md5Hash); // Check the size if (Size != Version->Size) { _error->Error("Size mismatch for package %s",Version.ParentPkg().Name()); return; } // Check the md5 if (Md5Hash.empty() == false && MD5.empty() == false) { if (Md5Hash != MD5) { _error->Error("MD5Sum mismatch for package %s",Version.ParentPkg().Name()); return; } } // Grab the output filename string FileName = LookupTag(Message,"Filename"); if (FileName.empty() == true) { Status = StatError; ErrorText = "Method gave a blank filename"; return; } Complete = true; // Reference filename if (FileName != DestFile) { StoreFilename = DestFile = FileName; Local = true; return; } // Done, move it into position string FinalFile = _config->FindDir("Dir::Cache::Archives"); FinalFile += flNotDir(StoreFilename); Rename(DestFile,FinalFile); StoreFilename = DestFile = FinalFile; Complete = true; } /*}}}*/ // AcqArchive::Describe - Describe the Item /*{{{*/ // --------------------------------------------------------------------- /* */ string pkgAcqArchive::Describe() { return Desc.URI; } /*}}}*/ // AcqArchive::Failed - Failure handler /*{{{*/ // --------------------------------------------------------------------- /* Here we try other sources */ void pkgAcqArchive::Failed(string Message,pkgAcquire::MethodConfig *Cnf) { ErrorText = LookupTag(Message,"Message"); if (QueueNext() == false) { // This is the retry counter if (Retries != 0 && Cnf->LocalOnly == false && StringToBool(LookupTag(Message,"Transient-Failure"),false) == true) { Retries--; Vf = Version.FileList(); if (QueueNext() == true) return; } Item::Failed(Message,Cnf); } } /*}}}*/