// -*- mode: cpp; mode: fold -*- // Description /*{{{*/ // $Id: acquire-item.cc,v 1.46.2.9 2004/01/16 18:51:11 mdz 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /*}}}*/ using namespace std; // 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) { 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, pkgAcquire::MethodConfig *Cnf) { // 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())); } if (FileSize == 0) FileSize= Size; 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]; snprintf(S,sizeof(S),_("rename failed, %s (%s -> %s)."),strerror(errno), From.c_str(),To.c_str()); Status = StatError; ErrorText = S; } } /*}}}*/ // 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, string ExpectedMD5, vector diffs) : Item(Owner), RealURI(URI), ExpectedMD5(ExpectedMD5), needed_files(diffs) { DestFile = _config->FindDir("Dir::State::lists") + "partial/"; DestFile += URItoFileName(URI); Debug = _config->FindB("Debug::pkgAcquire::Diffs",false); Desc.Description = URIDesc; Desc.Owner = this; Desc.ShortDesc = ShortDesc; CurrentPackagesFile = _config->FindDir("Dir::State::lists"); CurrentPackagesFile += URItoFileName(RealURI); if(Debug) { std::clog << "pkgAcqIndexDiffs::pkgAcqIndexDiffs(): " << CurrentPackagesFile << std::endl; } if(!FileExists(CurrentPackagesFile) || !_config->FindB("Acquire::Diffs",true)) { // we don't have a pkg file or we don't want to queue if(Debug) std::clog << "No index file or canceld by user" << std::endl; Failed("", NULL); return; } if(needed_files.size() == 0) QueueDiffIndex(URI); else QueueNextDiff(); } void pkgAcqIndexDiffs::QueueDiffIndex(string URI) { Desc.URI = URI + ".diff/Index"; Desc.Description = Description + "IndexDiff"; DestFile = _config->FindDir("Dir::State::lists") + "partial/"; DestFile += URItoFileName(URI) + string(".IndexDiff"); if(Debug) std::clog << "QueueDiffIndex: " << Desc.URI << std::endl; QueueURI(Desc); } void pkgAcqIndexDiffs::Failed(string Message,pkgAcquire::MethodConfig *Cnf) { if(Debug) std::clog << "Failed(): " << Desc.URI << std::endl << "Falling back to big package file" << std::endl; new pkgAcqIndex(Owner, RealURI, Desc.Description,Desc.ShortDesc, ExpectedMD5); 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 // the file will be cleaned if(allDone) { // this is for the "real" finish DestFile = _config->FindDir("Dir::State::lists"); DestFile += URItoFileName(RealURI); Complete = true; Dequeue(); if(Debug) std::clog << "\n\nallDone: " << DestFile << "\n" << std::endl; return; } if(Debug) std::clog << "Finishing: " << Desc.URI << std::endl; Complete = false; Status = StatDone; Dequeue(); return; } // this needs to be rewriten to not depend on the external ed bool pkgAcqIndexDiffs::ApplyDiff(string PatchFile) { char *error; int res=0; string FinalFile = _config->FindDir("Dir::State::lists"); FinalFile += URItoFileName(RealURI); int Process = ExecFork(); if (Process == 0) { chdir(_config->FindDir("Dir::State::lists").c_str()); string cmd = "(zcat " + PatchFile + "; echo \"wq\" ) | ed " + FinalFile + " >/dev/null 2>/dev/null"; if(Debug) std::clog << "Runing: " << cmd << std::endl; res = system(cmd.c_str()); _exit(WEXITSTATUS(res)); } if(!ExecWait(Process, error, true)) { //_error->Error("Patch failed: %s ", error); return false; } return true; } bool pkgAcqIndexDiffs::QueueNextDiff() { // queue diff Desc.URI = string(RealURI) + string(".diff/") + needed_files[0] + string(".gz"); Desc.Description = Description + string("-diff"); DestFile = _config->FindDir("Dir::State::lists") + "partial/"; DestFile += URItoFileName(RealURI + string(".diff/") + needed_files[0]); if(Debug) std::clog << "pkgAcqIndexDiffs::QueueNextDiff(): " << Desc.URI << std::endl; QueueURI(Desc); return true; } bool pkgAcqIndexDiffs::ParseIndexDiff(string IndexDiffFile) { if(Debug) std::clog << "pkgAcqIndexDiffs::ParseIndexDiff() " << IndexDiffFile << std::endl; FileFd Fd(IndexDiffFile,FileFd::ReadOnly); pkgTagFile TF(&Fd); if (_error->PendingError() == true) return false; pkgTagSection Tags; if(TF.Step(Tags) == true) { string local_sha1; string tmp = Tags.FindS("SHA1-Current"); std::stringstream ss(tmp); ss >> ServerSha1; FileFd fd(CurrentPackagesFile, FileFd::ReadOnly); SHA1Summation SHA1; SHA1.AddFD(fd.Fd(), fd.Size()); local_sha1 = string(SHA1.Result()); if(local_sha1 == ServerSha1) { if(Debug) std::clog << "Package file is up-to-date" << std::endl; Finish(true); return true; } if(Debug) std::clog << "SHA1-Current: " << ServerSha1 << std::endl; // check the historie and see what patches we need string history = Tags.FindS("SHA1-History"); std::stringstream hist(history); string sha1, size, file; bool found = false; while(hist >> sha1 >> size >> file) { if(sha1 == local_sha1) found=true; if(found) { if(Debug) std::clog << "Need to get diff: " << file << std::endl; needed_files.push_back(file); } } // no information how to get the patches, bail out if(!found) { if(Debug) std::clog << "Can't find a patch in the index file" << std::endl; // Failed will queue a big package file Failed("", NULL); } else { // queue the diffs new pkgAcqIndexDiffs(Owner, RealURI, Description, Desc.ShortDesc, ExpectedMD5, needed_files); Finish(); return true; } } return false; } void pkgAcqIndexDiffs::Done(string Message,unsigned long Size,string Md5Hash, pkgAcquire::MethodConfig *Cnf) { if(Debug) std::clog << "pkgAcqIndexDiffs::Done(): " << Desc.URI << std::endl; Item::Done(Message,Size,Md5Hash,Cnf); int len = Desc.URI.size(); // sucess in downloading the index if(Desc.URI.substr(len-strlen("Index"),len-1) == "Index") { if(!ParseIndexDiff(DestFile)) return Failed("", NULL); else return Finish(); } // sucess in downloading a diff if(Desc.URI.find(".diff") != string::npos) { ApplyDiff(DestFile); needed_files.erase(needed_files.begin()); if(needed_files.size() > 0) { new pkgAcqIndexDiffs(Owner, RealURI, Description, Desc.ShortDesc, ExpectedMD5, needed_files); } else { Finish(true); return; } } Finish(); } // 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, string ExpectedMD5, string comprExt) : Item(Owner), RealURI(URI), ExpectedMD5(ExpectedMD5) { Decompression = false; Erase = false; DestFile = _config->FindDir("Dir::State::lists") + "partial/"; DestFile += URItoFileName(URI); if(comprExt.empty()) { // autoselect if(FileExists("/usr/bin/bzip2")) Desc.URI = URI + ".bz2"; else Desc.URI = URI + ".gz"; } else { Desc.URI = URI + comprExt; } Desc.Description = URIDesc; Desc.Owner = this; Desc.ShortDesc = ShortDesc; QueueURI(Desc); } /*}}}*/ // 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(RealURI); struct stat Buf; if (stat(Final.c_str(),&Buf) != 0) return "\nIndex-File: true"; return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime); } /*}}}*/ void pkgAcqIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf) { // no .bz2 found, retry with .gz if(Desc.URI.substr(Desc.URI.size()-3,Desc.URI.size()-1) == "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, ExpectedMD5, string(".gz")); Status = StatDone; Complete = false; Dequeue(); return; } Item::Failed(Message,Cnf); } // 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, pkgAcquire::MethodConfig *Cfg) { Item::Done(Message,Size,MD5,Cfg); if (Decompression == true) { if (_config->FindB("Debug::pkgAcquire::Auth", false)) { std::cerr << std::endl << RealURI << ": Computed MD5: " << MD5; std::cerr << " Expected MD5: " << ExpectedMD5 << std::endl; } if (MD5.empty()) { MD5Summation sum; FileFd Fd(DestFile, FileFd::ReadOnly); sum.AddFD(Fd.Fd(), Fd.Size()); Fd.Close(); MD5 = (string)sum.Result(); } if (!ExpectedMD5.empty() && MD5 != ExpectedMD5) { Status = StatAuthError; ErrorText = _("MD5Sum mismatch"); Rename(DestFile,DestFile + ".FAILED"); return; } // Done, move it into position string FinalFile = _config->FindDir("Dir::State::lists"); FinalFile += URItoFileName(RealURI); 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); // 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; string compExt = Desc.URI.substr(Desc.URI.size()-3,Desc.URI.size()-1); char *decompProg; if(compExt == "bz2") decompProg = "bzip2"; else if(compExt == ".gz") decompProg = "gzip"; else { _error->Error("Unsupported extension: %s", compExt.c_str()); return; } Decompression = true; DestFile += ".decomp"; Desc.URI = string(decompProg) + ":" + FileName; QueueURI(Desc); Mode = decompProg; } 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), MetaIndexURIDesc(MetaIndexURIDesc), MetaIndexShortDesc(MetaIndexShortDesc) { this->MetaIndexParser = MetaIndexParser; this->IndexTargets = IndexTargets; DestFile = _config->FindDir("Dir::State::lists") + "partial/"; DestFile += URItoFileName(URI); // remove any partial downloaded sig-file. it may confuse proxies // and is too small to warrant a partial download anyway unlink(DestFile.c_str()); // Create the item Desc.Description = URIDesc; Desc.Owner = this; Desc.ShortDesc = ShortDesc; Desc.URI = URI; string Final = _config->FindDir("Dir::State::lists"); Final += URItoFileName(RealURI); struct stat Buf; if (stat(Final.c_str(),&Buf) == 0) { // File was already in place. It needs to be re-verified // because Release might have changed, so Move it into partial Rename(Final,DestFile); } QueueURI(Desc); } /*}}}*/ // pkgAcqMetaSig::Custom600Headers - Insert custom request headers /*{{{*/ // --------------------------------------------------------------------- /* The only header we use is the last-modified header. */ string pkgAcqMetaSig::Custom600Headers() { struct stat Buf; if (stat(DestFile.c_str(),&Buf) != 0) return "\nIndex-File: true"; return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime); } void pkgAcqMetaSig::Done(string Message,unsigned long Size,string MD5, pkgAcquire::MethodConfig *Cfg) { Item::Done(Message,Size,MD5,Cfg); string FileName = LookupTag(Message,"Filename"); if (FileName.empty() == true) { Status = StatError; ErrorText = "Method gave a blank filename"; return; } if (FileName != DestFile) { // We have to copy it into place Local = true; Desc.URI = "copy:" + FileName; QueueURI(Desc); return; } Complete = true; // queue a pkgAcqMetaIndex to be verified against the sig we just retrieved new pkgAcqMetaIndex(Owner, MetaIndexURI, MetaIndexURIDesc, MetaIndexShortDesc, DestFile, IndexTargets, MetaIndexParser); } /*}}}*/ void pkgAcqMetaSig::Failed(string Message,pkgAcquire::MethodConfig *Cnf) { // Delete any existing sigfile, so that this source isn't // mistakenly trusted string Final = _config->FindDir("Dir::State::lists") + URItoFileName(RealURI); unlink(Final.c_str()); // queue a pkgAcqMetaIndex with no sigfile new pkgAcqMetaIndex(Owner, MetaIndexURI, MetaIndexURIDesc, MetaIndexShortDesc, "", IndexTargets, MetaIndexParser); if (Cnf->LocalOnly == true || StringToBool(LookupTag(Message,"Transient-Failure"),false) == false) { // Ignore this Status = StatDone; Complete = false; Dequeue(); return; } Item::Failed(Message,Cnf); } pkgAcqMetaIndex::pkgAcqMetaIndex(pkgAcquire *Owner, string URI,string URIDesc,string ShortDesc, string SigFile, const vector* IndexTargets, indexRecords* MetaIndexParser) : Item(Owner), RealURI(URI), SigFile(SigFile) { this->AuthPass = false; this->MetaIndexParser = MetaIndexParser; this->IndexTargets = IndexTargets; DestFile = _config->FindDir("Dir::State::lists") + "partial/"; DestFile += URItoFileName(URI); // Create the item Desc.Description = URIDesc; Desc.Owner = this; Desc.ShortDesc = ShortDesc; Desc.URI = URI; QueueURI(Desc); } /*}}}*/ // pkgAcqMetaIndex::Custom600Headers - Insert custom request headers /*{{{*/ // --------------------------------------------------------------------- /* The only header we use is the last-modified header. */ string pkgAcqMetaIndex::Custom600Headers() { string Final = _config->FindDir("Dir::State::lists"); Final += URItoFileName(RealURI); struct stat Buf; if (stat(Final.c_str(),&Buf) != 0) return "\nIndex-File: true"; return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime); } void pkgAcqMetaIndex::Done(string Message,unsigned long Size,string MD5, pkgAcquire::MethodConfig *Cfg) { Item::Done(Message,Size,MD5,Cfg); // MetaIndexes are done in two passes: one to download the // metaindex with an appropriate method, and a second to verify it // with the gpgv method if (AuthPass == true) { AuthDone(Message); } else { RetrievalDone(Message); if (!Complete) // Still more retrieving to do return; if (SigFile == "") { // There was no signature file, so we are finished. Download // the indexes without verification. QueueIndexes(false); } else { // 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"; } } } void pkgAcqMetaIndex::RetrievalDone(string Message) { // We have just finished downloading a Release file (it is not // verified yet) 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; } Complete = true; string FinalFile = _config->FindDir("Dir::State::lists"); FinalFile += URItoFileName(RealURI); // The files timestamp matches if (StringToBool(LookupTag(Message,"IMS-Hit"),false) == false) { // Move it into position Rename(DestFile,FinalFile); } DestFile = FinalFile; } 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 // perform additional verification of its contents, and use them // to verify the indexes we are about to download if (!MetaIndexParser->Load(DestFile)) { Status = StatAuthError; ErrorText = MetaIndexParser->ErrorText; return; } if (!VerifyVendor()) { return; } if (_config->FindB("Debug::pkgAcquire::Auth", false)) std::cerr << "Signature verification succeeded: " << DestFile << std::endl; // Download further indexes with verification QueueIndexes(true); // 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) { for (vector ::const_iterator Target = IndexTargets->begin(); Target != IndexTargets->end(); Target++) { string ExpectedIndexMD5; if (verify) { 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; } ExpectedIndexMD5 = Record->MD5Hash; if (_config->FindB("Debug::pkgAcquire::Auth", false)) { std::cerr << "Queueing: " << (*Target)->URI << std::endl; std::cerr << "Expected MD5: " << ExpectedIndexMD5 << std::endl; } if (ExpectedIndexMD5.empty()) { Status = StatAuthError; ErrorText = "Unable to find MD5 sum for " + (*Target)->MetaKey + " in Meta-index file"; return; } } // Queue Packages file new pkgAcqIndexDiffs(Owner, (*Target)->URI, (*Target)->Description, (*Target)->ShortDesc, ExpectedIndexMD5); } } bool pkgAcqMetaIndex::VerifyVendor() { // // 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; // } // } string Transformed = MetaIndexParser->GetExpectedDist(); if (Transformed == "../project/experimental") { Transformed = "experimental"; } string::size_type pos = Transformed.rfind('/'); if (pos != string::npos) { Transformed = Transformed.substr(0, pos); } if (Transformed == ".") { Transformed = ""; } if (_config->FindB("Debug::pkgAcquire::Auth", false)) { std::cerr << "Got Codename: " << MetaIndexParser->GetDist() << std::endl; std::cerr << "Expecting Dist: " << MetaIndexParser->GetExpectedDist() << std::endl; std::cerr << "Transformed Dist: " << Transformed << std::endl; } if (MetaIndexParser->CheckDist(Transformed) == false) { // This might become fatal one day // Status = StatAuthError; // ErrorText = "Conflicting distribution; expected " // + MetaIndexParser->GetExpectedDist() + " but got " // + MetaIndexParser->GetDist(); // return false; if (!Transformed.empty()) { _error->Warning("Conflicting distribution: %s (expected %s but got %s)", Desc.Description.c_str(), Transformed.c_str(), MetaIndexParser->GetDist().c_str()); } } return true; } /*}}}*/ // pkgAcqMetaIndex::Failed - no Release file present or no signature // file present /*{{{*/ // --------------------------------------------------------------------- /* */ void pkgAcqMetaIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf) { if (AuthPass == true) { // gpgv method failed _error->Warning("GPG error: %s: %s", Desc.Description.c_str(), LookupTag(Message,"Message").c_str()); } // No Release file was present, or verification failed, so fall // back to queueing Packages files without verification QueueIndexes(false); } /*}}}*/ // 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()), Trusted(false) { Retries = _config->FindI("Acquire::Retries",0); if (Version.Arch() == 0) { _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()); return; } /* We need to find a filename to determine the extension. We make the 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++) { if ((Vf.File()->Flags & pkgCache::Flag::NotSource) != 0) continue; break; } // Does not really matter here.. we are going to fail out below if (Vf.end() != true) { // If this fails to get a file name we will bomb out below. pkgRecords::Parser &Parse = Recs->Lookup(Vf); if (_error->PendingError() == true) return; // Generate the final file name as: package_version_arch.foo StoreFilename = QuoteString(Version.ParentPkg().Name(),"_:") + '_' + QuoteString(Version.VerStr(),"_:") + '_' + QuoteString(Version.Arch(),"_:.") + "." + flExtension(Parse.FileName()); } // 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++) { pkgIndexFile *Index; if (Sources->FindIndex(i.File(),Index) == false) continue; if (_config->FindB("Debug::pkgAcquire::Auth", false)) { std::cerr << "Checking index: " << Index->Describe() << "(Trusted=" << Index->IsTrusted() << ")\n"; } if (Index->IsTrusted()) { Trusted = true; break; } } // 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 pkgIndexFile *Index; if (Sources->FindIndex(Vf.File(),Index) == false) continue; // only try to get a trusted package from another source if that source // is also trusted if(Trusted && !Index->IsTrusted()) continue; // Grab the text package record pkgRecords::Parser &Parse = Recs->Lookup(Vf); if (_error->PendingError() == true) return false; string 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()); Desc.URI = Index->ArchiveURI(PkgFile); Desc.Description = Index->ArchiveInfo(Version); Desc.Owner = this; Desc.ShortDesc = 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 means it is an old style mismatched arch */ 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); // Check the destination file if (stat(DestFile.c_str(),&Buf) == 0) { // Hmm, the partial file is too big, erase it if ((unsigned)Buf.st_size > Version->Size) unlink(DestFile.c_str()); else PartialSize = Buf.st_size; } // 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++; return true; } return false; } /*}}}*/ // AcqArchive::Done - Finished fetching /*{{{*/ // --------------------------------------------------------------------- /* */ void pkgAcqArchive::Done(string Message,unsigned long Size,string Md5Hash, pkgAcquire::MethodConfig *Cfg) { Item::Done(Message,Size,Md5Hash,Cfg); // Check the size if (Size != Version->Size) { Status = StatError; ErrorText = _("Size mismatch"); return; } // Check the md5 if (Md5Hash.empty() == false && MD5.empty() == false) { if (Md5Hash != MD5) { Status = StatError; ErrorText = _("MD5Sum mismatch"); Rename(DestFile,DestFile + ".FAILED"); 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::Failed - Failure handler /*{{{*/ // --------------------------------------------------------------------- /* Here we try other sources */ void pkgAcqArchive::Failed(string Message,pkgAcquire::MethodConfig *Cnf) { ErrorText = LookupTag(Message,"Message"); /* We don't really want to retry on failed media swaps, this prevents that. An interesting observation is that permanent failures are not recorded. */ if (Cnf->Removable == true && StringToBool(LookupTag(Message,"Transient-Failure"),false) == true) { // Vf = Version.FileList(); while (Vf.end() == false) Vf++; StoreFilename = string(); Item::Failed(Message,Cnf); return; } 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; } StoreFilename = string(); Item::Failed(Message,Cnf); } } /*}}}*/ // AcqArchive::IsTrusted - Determine whether this archive comes from a // trusted source /*{{{*/ // --------------------------------------------------------------------- bool pkgAcqArchive::IsTrusted() { return Trusted; } // AcqArchive::Finished - Fetching has finished, tidy up /*{{{*/ // --------------------------------------------------------------------- /* */ void pkgAcqArchive::Finished() { if (Status == pkgAcquire::Item::StatDone && Complete == true) return; StoreFilename = string(); } /*}}}*/ // AcqFile::pkgAcqFile - Constructor /*{{{*/ // --------------------------------------------------------------------- /* The file is added to the queue */ pkgAcqFile::pkgAcqFile(pkgAcquire *Owner,string URI,string MD5, unsigned long Size,string Dsc,string ShortDesc) : Item(Owner), Md5Hash(MD5) { Retries = _config->FindI("Acquire::Retries",0); DestFile = flNotDir(URI); // Create the item Desc.URI = URI; Desc.Description = Dsc; Desc.Owner = this; // Set the short description to the archive component Desc.ShortDesc = ShortDesc; // Get the transfer sizes FileSize = Size; struct stat Buf; if (stat(DestFile.c_str(),&Buf) == 0) { // Hmm, the partial file is too big, erase it if ((unsigned)Buf.st_size > Size) unlink(DestFile.c_str()); else PartialSize = Buf.st_size; } QueueURI(Desc); } /*}}}*/ // AcqFile::Done - Item downloaded OK /*{{{*/ // --------------------------------------------------------------------- /* */ void pkgAcqFile::Done(string Message,unsigned long Size,string MD5, pkgAcquire::MethodConfig *Cnf) { // Check the md5 if (Md5Hash.empty() == false && MD5.empty() == false) { if (Md5Hash != MD5) { Status = StatError; ErrorText = "MD5Sum mismatch"; Rename(DestFile,DestFile + ".FAILED"); return; } } Item::Done(Message,Size,MD5,Cnf); 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; if (_config->FindB("Acquire::Source-Symlinks",true) == false || Cnf->Removable == true) { Desc.URI = "copy:" + FileName; QueueURI(Desc); return; } // Erase the file if it is a symlink so we can overwrite it struct stat St; if (lstat(DestFile.c_str(),&St) == 0) { if (S_ISLNK(St.st_mode) != 0) unlink(DestFile.c_str()); } // Symlink the file if (symlink(FileName.c_str(),DestFile.c_str()) != 0) { ErrorText = "Link to " + DestFile + " failure "; Status = StatError; Complete = false; } } } /*}}}*/ // AcqFile::Failed - Failure handler /*{{{*/ // --------------------------------------------------------------------- /* Here we try other sources */ void pkgAcqFile::Failed(string Message,pkgAcquire::MethodConfig *Cnf) { ErrorText = LookupTag(Message,"Message"); // This is the retry counter if (Retries != 0 && Cnf->LocalOnly == false && StringToBool(LookupTag(Message,"Transient-Failure"),false) == true) { Retries--; QueueURI(Desc); return; } Item::Failed(Message,Cnf); } /*}}}*/