// -*- mode: cpp; mode: fold -*- // Description /*{{{*/ // $Id: acquire-item.h,v 1.22 1999/10/17 20:58:36 jgg Exp $ /* ###################################################################### Acquire Item - Item to acquire When an item is instantiated it will add it self to the local list in the Owner Acquire class. Derived classes will then call QueueURI to register all the URI's they wish to fetch at the initial moment. Two item classes are provided to provide functionality for downloading of Index files and downloading of Packages. A Archive class is provided for downloading .deb files. It does Md5 checking and source location as well as a retry algorithm. ##################################################################### */ /*}}}*/ #ifndef PKGLIB_ACQUIRE_ITEM_H #define PKGLIB_ACQUIRE_ITEM_H #include <apt-pkg/acquire.h> #include <apt-pkg/sourcelist.h> #include <apt-pkg/pkgrecords.h> #ifdef __GNUG__ #pragma interface "apt-pkg/acquire-item.h" #endif // Item to acquire class pkgAcquire::Item { protected: // Some private helper methods for registering URIs pkgAcquire *Owner; inline void QueueURI(ItemDesc &Item) {Owner->Enqueue(Item);}; inline void Dequeue() {Owner->Dequeue(this);}; // Safe rename function with timestamp preservation void Rename(string From,string To); public: // State of the item enum {StatIdle, StatFetching, StatDone, StatError} Status; string ErrorText; unsigned long FileSize; unsigned long PartialSize; char *Mode; unsigned long ID; bool Complete; bool Local; // Number of queues we are inserted into unsigned int QueueCounter; // File to write the fetch into string DestFile; // Action members invoked by the worker virtual void Failed(string Message,pkgAcquire::MethodConfig *Cnf); virtual void Done(string Message,unsigned long Size,string Md5Hash); virtual void Start(string Message,unsigned long Size); virtual string Custom600Headers() {return string();}; virtual string DescURI() = 0; virtual void Finished() {}; // Inquire functions virtual string MD5Sum() {return string();}; Item(pkgAcquire *Owner); virtual ~Item(); }; // Item class for index files class pkgAcqIndex : public pkgAcquire::Item { protected: const pkgSourceList::Item *Location; bool Decompression; bool Erase; pkgAcquire::ItemDesc Desc; public: // Specialized action members virtual void Done(string Message,unsigned long Size,string Md5Hash); virtual string Custom600Headers(); virtual string DescURI() {return Location->PackagesURI();}; pkgAcqIndex(pkgAcquire *Owner,const pkgSourceList::Item *Location); }; // Item class for index files class pkgAcqIndexRel : public pkgAcquire::Item { protected: const pkgSourceList::Item *Location; pkgAcquire::ItemDesc Desc; public: // Specialized action members virtual void Failed(string Message,pkgAcquire::MethodConfig *Cnf); virtual void Done(string Message,unsigned long Size,string Md5Hash); virtual string Custom600Headers(); virtual string DescURI() {return Location->ReleaseURI();}; pkgAcqIndexRel(pkgAcquire *Owner,const pkgSourceList::Item *Location); }; // Item class for archive files class pkgAcqArchive : public pkgAcquire::Item { protected: // State information for the retry mechanism pkgCache::VerIterator Version; pkgAcquire::ItemDesc Desc; pkgSourceList *Sources; pkgRecords *Recs; string MD5; string &StoreFilename; pkgCache::VerFileIterator Vf; unsigned int Retries; // Queue the next available file for download. bool QueueNext(); public: // Specialized action members virtual void Failed(string Message,pkgAcquire::MethodConfig *Cnf); virtual void Done(string Message,unsigned long Size,string Md5Hash); virtual string MD5Sum() {return MD5;}; virtual string DescURI() {return Desc.URI;}; virtual void Finished(); pkgAcqArchive(pkgAcquire *Owner,pkgSourceList *Sources, pkgRecords *Recs,pkgCache::VerIterator const &Version, string &StoreFilename); }; // Fetch a generic file to the current directory class pkgAcqFile : public pkgAcquire::Item { pkgAcquire::ItemDesc Desc; string Md5Hash; unsigned int Retries; public: // Specialized action members virtual void Failed(string Message,pkgAcquire::MethodConfig *Cnf); virtual void Done(string Message,unsigned long Size,string Md5Hash); virtual string MD5Sum() {return Md5Hash;}; virtual string DescURI() {return Desc.URI;}; pkgAcqFile(pkgAcquire *Owner,string URI,string MD5,unsigned long Size, string Desc,string ShortDesc); }; #endif