X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/6db194289ece36e62cb8dab0aa178209b46c59f2..02e20767719873fa8f1919bd0e7a75f63e00c484:/apt-pkg/acquire-item.h diff --git a/apt-pkg/acquire-item.h b/apt-pkg/acquire-item.h index e6916a834..1af737e00 100644 --- a/apt-pkg/acquire-item.h +++ b/apt-pkg/acquire-item.h @@ -21,13 +21,21 @@ #define PKGLIB_ACQUIRE_ITEM_H #include +#include +#include +#include +#include + +#include +#include + +#ifndef APT_8_CLEANER_HEADERS #include #include #include #include #include -#include -#include +#endif /** \addtogroup acquire * @{ @@ -35,6 +43,12 @@ * \file acquire-item.h */ +class indexRecords; +class pkgRecords; +class pkgSourceList; +class IndexTarget; +class pkgAcqMetaBase; + /** \brief Represents the process by which a pkgAcquire object should {{{ * retrieve a file or a collection of files. * @@ -49,6 +63,10 @@ */ class pkgAcquire::Item : public WeakPointable { + friend class pkgAcqMetaBase; + + void *d; + protected: /** \brief The acquire object with which this item is associated. */ @@ -56,26 +74,25 @@ class pkgAcquire::Item : public WeakPointable /** \brief Insert this item into its owner's queue. * - * \param ItemDesc Metadata about this item (its URI and + * \param Item Metadata about this item (its URI and * description). */ - inline void QueueURI(ItemDesc &Item) - {Owner->Enqueue(Item);}; + void QueueURI(ItemDesc &Item); /** \brief Remove this item from its owner's queue. */ - inline void Dequeue() {Owner->Dequeue(this);}; - + void Dequeue(); + /** \brief Rename a file without modifying its timestamp. * * Many item methods call this as their final action. * * \param From The file to be renamed. * - * \param To The new name of #From. If #To exists it will be + * \param To The new name of \a From. If \a To exists it will be * overwritten. */ - void Rename(string From,string To); - + bool Rename(std::string From,std::string To); + public: /** \brief The current status of this item. */ @@ -103,13 +120,13 @@ class pkgAcquire::Item : public WeakPointable /** \brief The item was could not be downloaded because of * a transient network error (e.g. network down) */ - StatTransientNetworkError + StatTransientNetworkError, } Status; /** \brief Contains a textual description of the error encountered - * if #Status is #StatError or #StatAuthError. + * if #ItemState is #StatError or #StatAuthError. */ - string ErrorText; + std::string ErrorText; /** \brief The size of the object to fetch. */ unsigned long long FileSize; @@ -120,7 +137,12 @@ class pkgAcquire::Item : public WeakPointable /** \brief If not \b NULL, contains the name of a subprocess that * is operating on this object (for instance, "gzip" or "gpgv"). */ - const char *Mode; + APT_DEPRECATED const char *Mode; + + /** \brief contains the name of the subprocess that is operating on this object + * (for instance, "gzip", "rred" or "gpgv"). This is obsoleting #Mode from above + * as it can manage the lifetime of included string properly. */ + std::string ActiveSubprocess; /** \brief A client-supplied unique identifier. * @@ -143,7 +165,7 @@ class pkgAcquire::Item : public WeakPointable * download progress indicator's overall statistics. */ bool Local; - string UsedMirror; + std::string UsedMirror; /** \brief The number of fetch queues into which this item has been * inserted. @@ -154,11 +176,27 @@ class pkgAcquire::Item : public WeakPointable * \sa pkgAcquire */ unsigned int QueueCounter; + + /** \brief TransactionManager */ + pkgAcqMetaBase *TransactionManager; + + /** \brief The number of additional fetch items that are expected + * once this item is done. + * + * Some items like pkgAcqMeta{Index,Sig} will queue additional + * items. This variable can be set by the methods if it knows + * in advance how many items to expect to get a more accurate + * progress. + */ + unsigned int ExpectedAdditionalItems; /** \brief The name of the file into which the retrieved object * will be written. */ - string DestFile; + std::string DestFile; + + /** \brief storge name until a transaction is finished */ + std::string PartialFile; /** \brief Invoked by the acquire worker when the object couldn't * be fetched. @@ -173,7 +211,7 @@ class pkgAcquire::Item : public WeakPointable * * \sa pkgAcqMethod */ - virtual void Failed(string Message,pkgAcquire::MethodConfig *Cnf); + virtual void Failed(std::string Message,pkgAcquire::MethodConfig *Cnf); /** \brief Invoked by the acquire worker when the object was * fetched successfully. @@ -189,12 +227,12 @@ class pkgAcquire::Item : public WeakPointable * \param Message Data from the acquire method. Use LookupTag() * to parse it. * \param Size The size of the object that was fetched. - * \param Hash The HashSum of the object that was fetched. + * \param Hashes The HashSums of the object that was fetched. * \param Cnf The method via which the object was fetched. * * \sa pkgAcqMethod */ - virtual void Done(string Message,unsigned long long Size,string Hash, + virtual void Done(std::string Message, unsigned long long Size, HashStringList const &Hashes, pkgAcquire::MethodConfig *Cnf); /** \brief Invoked when the worker starts to fetch this object. @@ -206,7 +244,7 @@ class pkgAcquire::Item : public WeakPointable * * \sa pkgAcqMethod */ - virtual void Start(string Message,unsigned long long Size); + virtual void Start(std::string Message,unsigned long long Size); /** \brief Custom headers to be sent to the fetch process. * @@ -216,36 +254,47 @@ class pkgAcquire::Item : public WeakPointable * line, so they should (if nonempty) have a leading newline and * no trailing newline. */ - virtual string Custom600Headers() {return string();}; +#if APT_PKG_ABI >= 413 + virtual std::string Custom600Headers() const {return std::string();}; +#else + virtual std::string Custom600Headers() {return std::string();}; +#endif /** \brief A "descriptive" URI-like string. * * \return a URI that should be used to describe what is being fetched. */ - virtual string DescURI() = 0; + virtual std::string DescURI() = 0; /** \brief Short item description. * * \return a brief description of the object being fetched. */ - virtual string ShortDesc() {return DescURI();} + virtual std::string ShortDesc() {return DescURI();} /** \brief Invoked by the worker when the download is completely done. */ virtual void Finished() {}; - /** \brief HashSum + /** \brief HashSums * - * \return the HashSum of this object, if applicable; otherwise, an - * empty string. + * \return the HashSums of this object, if applicable; otherwise, an + * empty list. */ - virtual string HashSum() {return string();}; + HashStringList HashSums() const {return ExpectedHashes;}; + std::string HashSum() const {HashStringList const hashes = HashSums(); HashString const * const hs = hashes.find(NULL); return hs != NULL ? hs->toStr() : ""; }; /** \return the acquire process with which this item is associated. */ + pkgAcquire *GetOwner() const {return Owner;}; +#if APT_PKG_ABI < 413 pkgAcquire *GetOwner() {return Owner;}; +#endif /** \return \b true if this object is being fetched from a trusted source. */ +#if APT_PKG_ABI >= 413 + virtual bool IsTrusted() const {return false;}; +#else virtual bool IsTrusted() {return false;}; +#endif - // report mirror problems /** \brief Report mirror problem * * This allows reporting mirror failures back to a centralized @@ -253,8 +302,13 @@ class pkgAcquire::Item : public WeakPointable * * \param FailCode A short failure string that is send */ - void ReportMirrorFailure(string FailCode); + void ReportMirrorFailure(std::string FailCode); + /** \brief Set the name of the current active subprocess + * + * See also #ActiveSubprocess + */ + void SetActiveSubprocess(const std::string &subprocess); /** \brief Initialize an item. * @@ -262,73 +316,349 @@ class pkgAcquire::Item : public WeakPointable * process, but does not place it into any fetch queues (you must * manually invoke QueueURI() to do so). * - * Initializes all fields of the item other than Owner to 0, - * false, or the empty string. - * * \param Owner The new owner of this item. + * \param ExpectedHashes of the file represented by this item */ - Item(pkgAcquire *Owner); + Item(pkgAcquire *Owner, + HashStringList const &ExpectedHashes=HashStringList(), + pkgAcqMetaBase *TransactionManager=NULL); /** \brief Remove this item from its owner's queue by invoking * pkgAcquire::Remove. */ virtual ~Item(); + + protected: + + enum RenameOnErrorState { + HashSumMismatch, + SizeMismatch, + InvalidFormat, + SignatureError, + NotClearsigned, + MaximumSizeExceeded + }; + + /** \brief Rename failed file and set error + * + * \param state respresenting the error we encountered + */ + bool RenameOnError(RenameOnErrorState const state); + + /** \brief The HashSums of the item is supposed to have than done */ + HashStringList ExpectedHashes; + + /** \brief The item that is currently being downloaded. */ + pkgAcquire::ItemDesc Desc; }; /*}}}*/ /** \brief Information about an index patch (aka diff). */ /*{{{*/ -struct DiffInfo { +struct APT_HIDDEN DiffInfo { /** The filename of the diff. */ - string file; + std::string file; - /** The sha1 hash of the diff. */ - string sha1; + /** The hashes of the diff */ + HashStringList result_hashes; - /** The size of the diff. */ - unsigned long size; + /** The hashes of the file after the diff is applied */ + HashStringList patch_hashes; + + /** The size of the file after the diff is applied */ + unsigned long long result_size; + + /** The size of the diff itself */ + unsigned long long patch_size; }; /*}}}*/ -/** \brief An item that is responsible for fetching a SubIndex {{{ - * - * The MetaIndex file includes only records for important indexes - * and records for these SubIndex files so these can carry records - * for addition files like PDiffs and Translations - */ -class pkgAcqSubIndex : public pkgAcquire::Item +class pkgAcqMetaBase : public pkgAcquire::Item /*{{{*/ { + void *d; + protected: - /** \brief If \b true, debugging information will be written to std::clog. */ - bool Debug; + std::vector Transaction; - /** \brief The item that is currently being downloaded. */ - pkgAcquire::ItemDesc Desc; + /** \brief A package-system-specific parser for the meta-index file. */ + indexRecords *MetaIndexParser; - /** \brief The Hash that this file should have after download + /** \brief The index files which should be looked up in the meta-index + * and then downloaded. */ - HashString ExpectedHash; + const std::vector* IndexTargets; - public: - // Specialized action members - virtual void Failed(string Message,pkgAcquire::MethodConfig *Cnf); - virtual void Done(string Message,unsigned long long Size,string Md5Hash, - pkgAcquire::MethodConfig *Cnf); - virtual string DescURI() {return Desc.URI;}; - virtual string Custom600Headers(); - virtual bool ParseIndex(string const &IndexFile); + /** \brief If \b true, the index's signature is currently being verified. + */ + bool AuthPass; + + // required to deal gracefully with problems caused by incorrect ims hits + bool IMSHit; - /** \brief Create a new pkgAcqSubIndex. + /** \brief Starts downloading the individual index files. * - * \param Owner The Acquire object that owns this item. + * \param verify If \b true, only indices whose expected hashsum + * can be determined from the meta-index will be downloaded, and + * the hashsums of indices will be checked (reporting + * #StatAuthError if there is a mismatch). If verify is \b false, + * no hashsum checking will be performed. + */ + void QueueIndexes(bool verify); + + /** \brief Called when a file is finished being retrieved. * - * \param URI The URI of the list file to download. + * If the file was not downloaded to DestFile, a copy process is + * set up to copy it to DestFile; otherwise, Complete is set to \b + * true and the file is moved to its final location. * - * \param URIDesc A long description of the list file to download. + * \param Message The message block received from the fetch + * subprocess. + */ + bool CheckDownloadDone(const std::string &Message, + const std::string &RealURI); + + /** \brief Queue the downloaded Signature for verification */ + void QueueForSignatureVerify(const std::string &MetaIndexFile, + const std::string &MetaIndexFileSignature); + + /** \brief get the custom600 header for all pkgAcqMeta */ + std::string GetCustom600Headers(const std::string &RealURI) const; + + /** \brief Called when authentication succeeded. * - * \param ShortDesc A short description of the list file to download. + * Sanity-checks the authenticated file, queues up the individual + * index files for download, and saves the signature in the lists + * directory next to the authenticated list file. * - * \param ExpectedHash The list file's MD5 signature. + * \param Message The message block received from the fetch + * subprocess. + */ + bool CheckAuthDone(std::string Message, const std::string &RealURI); + + /** Check if the current item should fail at this point */ + bool CheckStopAuthentication(const std::string &RealURI, + const std::string &Message); + + /** \brief Check that the release file is a release file for the + * correct distribution. + * + * \return \b true if no fatal errors were encountered. + */ + bool VerifyVendor(std::string Message, const std::string &RealURI); + + public: + // transaction code + void Add(Item *I); + void AbortTransaction(); + bool TransactionHasError() APT_PURE; + void CommitTransaction(); + + /** \brief Stage (queue) a copy action when the transaction is committed + */ + void TransactionStageCopy(Item *I, + const std::string &From, + const std::string &To); + /** \brief Stage (queue) a removal action when the transaction is committed + */ + void TransactionStageRemoval(Item *I, const std::string &FinalFile); + + pkgAcqMetaBase(pkgAcquire *Owner, + const std::vector* IndexTargets, + indexRecords* MetaIndexParser, + HashStringList const &ExpectedHashes=HashStringList(), + pkgAcqMetaBase *TransactionManager=NULL) + : Item(Owner, ExpectedHashes, TransactionManager), + MetaIndexParser(MetaIndexParser), IndexTargets(IndexTargets), + AuthPass(false), IMSHit(false) {}; +}; + /*}}}*/ +/** \brief An acquire item that downloads the detached signature {{{ + * of a meta-index (Release) file, then queues up the release + * file itself. + * + * \todo Why protected members? + * + * \sa pkgAcqMetaIndex + */ +class APT_HIDDEN pkgAcqMetaSig : public pkgAcqMetaBase +{ + void *d; + + protected: + + /** \brief The URI of the signature file. Unlike Desc.URI, this is + * never modified; it is used to determine the file that is being + * downloaded. + */ + std::string RealURI; + + /** \brief The file we need to verify */ + std::string MetaIndexFile; + + /** \brief The file we use to verify the MetaIndexFile with */ + std::string MetaIndexFileSignature; + + /** \brief Long URI description used in the acquire system */ + std::string URIDesc; + + /** \brief Short URI description used in the acquire system */ + std::string ShortDesc; + + public: + + // Specialized action members + virtual void Failed(std::string Message,pkgAcquire::MethodConfig *Cnf); + virtual void Done(std::string Message,unsigned long long Size, + HashStringList const &Hashes, + pkgAcquire::MethodConfig *Cnf); +#if APT_PKG_ABI >= 413 + virtual std::string Custom600Headers() const; +#else + virtual std::string Custom600Headers(); +#endif + virtual std::string DescURI() {return RealURI; }; + + /** \brief Create a new pkgAcqMetaSig. */ + pkgAcqMetaSig(pkgAcquire *Owner, + pkgAcqMetaBase *TransactionManager, + std::string URI,std::string URIDesc, std::string ShortDesc, + std::string MetaIndexFile, + const std::vector* IndexTargets, + indexRecords* MetaIndexParser); + virtual ~pkgAcqMetaSig(); +}; + /*}}}*/ +/** \brief An item that is responsible for downloading the meta-index {{{ + * file (i.e., Release) itself and verifying its signature. + * + * Once the download and verification are complete, the downloads of + * the individual index files are queued up using pkgAcqDiffIndex. + * If the meta-index file had a valid signature, the expected hashsums + * of the index files will be the md5sums listed in the meta-index; + * otherwise, the expected hashsums will be "" (causing the + * authentication of the index files to be bypassed). + */ +class APT_HIDDEN pkgAcqMetaIndex : public pkgAcqMetaBase +{ + void *d; + + protected: + /** \brief The URI that is actually being downloaded; never + * modified by pkgAcqMetaIndex. + */ + std::string RealURI; + + std::string URIDesc; + std::string ShortDesc; + + /** \brief The URI of the meta-index file for the detached signature */ + std::string MetaIndexSigURI; + + /** \brief A "URI-style" description of the meta-index file */ + std::string MetaIndexSigURIDesc; + + /** \brief A brief description of the meta-index file */ + std::string MetaIndexSigShortDesc; + + /** \brief delayed constructor */ + void Init(std::string URIDesc, std::string ShortDesc); + + public: + + // Specialized action members + virtual void Failed(std::string Message,pkgAcquire::MethodConfig *Cnf); + virtual void Done(std::string Message,unsigned long long Size, HashStringList const &Hashes, + pkgAcquire::MethodConfig *Cnf); +#if APT_PKG_ABI >= 413 + virtual std::string Custom600Headers() const; +#else + virtual std::string Custom600Headers(); +#endif + virtual std::string DescURI() {return RealURI; }; + virtual void Finished(); + + /** \brief Create a new pkgAcqMetaIndex. */ + pkgAcqMetaIndex(pkgAcquire *Owner, + pkgAcqMetaBase *TransactionManager, + std::string URI,std::string URIDesc, std::string ShortDesc, + std::string MetaIndexSigURI, std::string MetaIndexSigURIDesc, std::string MetaIndexSigShortDesc, + const std::vector* IndexTargets, + indexRecords* MetaIndexParser); +}; + /*}}}*/ +/** \brief An item repsonsible for downloading clearsigned metaindexes {{{*/ +class APT_HIDDEN pkgAcqMetaClearSig : public pkgAcqMetaIndex +{ + void *d; + + /** \brief The URI of the meta-index file for the detached signature */ + std::string MetaIndexURI; + + /** \brief A "URI-style" description of the meta-index file */ + std::string MetaIndexURIDesc; + + /** \brief A brief description of the meta-index file */ + std::string MetaIndexShortDesc; + + /** \brief The URI of the detached meta-signature file if the clearsigned one failed. */ + std::string MetaSigURI; + + /** \brief A "URI-style" description of the meta-signature file */ + std::string MetaSigURIDesc; + + /** \brief A brief description of the meta-signature file */ + std::string MetaSigShortDesc; + +public: + virtual void Failed(std::string Message,pkgAcquire::MethodConfig *Cnf); +#if APT_PKG_ABI >= 413 + virtual std::string Custom600Headers() const; +#else + virtual std::string Custom600Headers(); +#endif + virtual void Done(std::string Message,unsigned long long Size, + HashStringList const &Hashes, + pkgAcquire::MethodConfig *Cnf); + + /** \brief Create a new pkgAcqMetaClearSig. */ + pkgAcqMetaClearSig(pkgAcquire *Owner, + std::string const &URI, std::string const &URIDesc, std::string const &ShortDesc, + std::string const &MetaIndexURI, std::string const &MetaIndexURIDesc, std::string const &MetaIndexShortDesc, + std::string const &MetaSigURI, std::string const &MetaSigURIDesc, std::string const &MetaSigShortDesc, + const std::vector* IndexTargets, + indexRecords* MetaIndexParser); + virtual ~pkgAcqMetaClearSig(); +}; + /*}}}*/ +/** \brief Common base class for all classes that deal with fetching {{{ + indexes + */ +class pkgAcqBaseIndex : public pkgAcquire::Item +{ + void *d; + + protected: + /** \brief Pointer to the IndexTarget data */ - pkgAcqSubIndex(pkgAcquire *Owner, string const &URI,string const &URIDesc, - string const &ShortDesc, HashString const &ExpectedHash); + const struct IndexTarget * Target; + + /** \brief Pointer to the indexRecords parser */ + indexRecords *MetaIndexParser; + + /** \brief The MetaIndex Key */ + std::string MetaKey; + + /** \brief The URI of the index file to recreate at our end (either + * by downloading it or by applying partial patches). + */ + std::string RealURI; + + bool VerifyHashByMetaKey(HashStringList const &Hashes); + + pkgAcqBaseIndex(pkgAcquire *Owner, + pkgAcqMetaBase *TransactionManager, + struct IndexTarget const * const Target, + HashStringList const &ExpectedHashes, + indexRecords *MetaIndexParser) + : Item(Owner, ExpectedHashes, TransactionManager), Target(Target), + MetaIndexParser(MetaIndexParser) {}; }; /*}}}*/ /** \brief An item that is responsible for fetching an index file of {{{ @@ -340,42 +670,39 @@ class pkgAcqSubIndex : public pkgAcquire::Item * * \sa pkgAcqIndexDiffs, pkgAcqIndex */ -class pkgAcqDiffIndex : public pkgAcquire::Item +class APT_HIDDEN pkgAcqDiffIndex : public pkgAcqBaseIndex { + void *d; + protected: /** \brief If \b true, debugging information will be written to std::clog. */ bool Debug; - /** \brief The item that is currently being downloaded. */ - pkgAcquire::ItemDesc Desc; - - /** \brief The URI of the index file to recreate at our end (either - * by downloading it or by applying partial patches). - */ - string RealURI; - - /** \brief The Hash that the real index file should have after - * all patches have been applied. - */ - HashString ExpectedHash; - /** \brief The index file which will be patched to generate the new * file. */ - string CurrentPackagesFile; + std::string CurrentPackagesFile; /** \brief A description of the Packages file (stored in * pkgAcquire::ItemDesc::Description). */ - string Description; + std::string Description; + + /** \brief If the copy step of the packages file is done + */ + bool PackagesFileReadyInPartial; public: // Specialized action members - virtual void Failed(string Message,pkgAcquire::MethodConfig *Cnf); - virtual void Done(string Message,unsigned long long Size,string Md5Hash, + virtual void Failed(std::string Message,pkgAcquire::MethodConfig *Cnf); + virtual void Done(std::string Message,unsigned long long Size, HashStringList const &Hashes, pkgAcquire::MethodConfig *Cnf); - virtual string DescURI() {return RealURI + "Index";}; - virtual string Custom600Headers(); + virtual std::string DescURI() {return RealURI + "Index";}; +#if APT_PKG_ABI >= 413 + virtual std::string Custom600Headers() const; +#else + virtual std::string Custom600Headers(); +#endif /** \brief Parse the Index file for a set of Packages diffs. * @@ -387,7 +714,7 @@ class pkgAcqDiffIndex : public pkgAcquire::Item * \return \b true if the Index file was successfully parsed, \b * false otherwise. */ - bool ParseDiffIndex(string IndexDiffFile); + bool ParseDiffIndex(std::string IndexDiffFile); /** \brief Create a new pkgAcqDiffIndex. @@ -400,13 +727,104 @@ class pkgAcqDiffIndex : public pkgAcquire::Item * * \param ShortDesc A short description of the list file to download. * - * \param ExpectedHash The list file's MD5 signature. + * \param ExpectedHashes The list file's hashsums which are expected. + */ + pkgAcqDiffIndex(pkgAcquire *Owner, + pkgAcqMetaBase *TransactionManager, + struct IndexTarget const * const Target, + HashStringList const &ExpectedHashes, + indexRecords *MetaIndexParser); +}; + /*}}}*/ +/** \brief An item that is responsible for fetching client-merge patches {{{ + * that need to be applied to a given package index file. + * + * Instead of downloading and applying each patch one by one like its + * sister #pkgAcqIndexDiffs this class will download all patches at once + * and call rred with all the patches downloaded once. Rred will then + * merge and apply them in one go, which should be a lot faster – but is + * incompatible with server-based merges of patches like reprepro can do. + * + * \sa pkgAcqDiffIndex, pkgAcqIndex + */ +class APT_HIDDEN pkgAcqIndexMergeDiffs : public pkgAcqBaseIndex +{ + void *d; + + protected: + + /** \brief If \b true, debugging output will be written to + * std::clog. + */ + bool Debug; + + /** \brief description of the file being downloaded. */ + std::string Description; + + /** \brief information about the current patch */ + struct DiffInfo const patch; + + /** \brief list of all download items for the patches */ + std::vector const * const allPatches; + + /** The current status of this patch. */ + enum DiffState + { + /** \brief The diff is currently being fetched. */ + StateFetchDiff, + + /** \brief The diff is currently being applied. */ + StateApplyDiff, + + /** \brief the work with this diff is done */ + StateDoneDiff, + + /** \brief something bad happened and fallback was triggered */ + StateErrorDiff + } State; + + public: + /** \brief Called when the patch file failed to be downloaded. + * + * This method will fall back to downloading the whole index file + * outright; its arguments are ignored. */ - pkgAcqDiffIndex(pkgAcquire *Owner,string URI,string URIDesc, - string ShortDesc, HashString ExpectedHash); + virtual void Failed(std::string Message,pkgAcquire::MethodConfig *Cnf); + virtual void Done(std::string Message,unsigned long long Size, HashStringList const &Hashes, + pkgAcquire::MethodConfig *Cnf); + virtual std::string DescURI() {return RealURI + "Index";}; + + /** \brief Create an index merge-diff item. + * + * \param Owner The pkgAcquire object that owns this item. + * + * \param URI The URI of the package index file being + * reconstructed. + * + * \param URIDesc A long description of this item. + * + * \param ShortDesc A brief description of this item. + * + * \param ExpectedHashes The expected md5sum of the completely + * reconstructed package index file; the index file will be tested + * against this value when it is entirely reconstructed. + * + * \param patch contains infos about the patch this item is supposed + * to download which were read from the index + * + * \param allPatches contains all related items so that each item can + * check if it was the last one to complete the download step + */ + pkgAcqIndexMergeDiffs(pkgAcquire *Owner, + pkgAcqMetaBase *TransactionManager, + struct IndexTarget const * const Target, + HashStringList const &ExpectedHash, + indexRecords *MetaIndexParser, + DiffInfo const &patch, + std::vector const * const allPatches); }; /*}}}*/ -/** \brief An item that is responsible for fetching all the patches {{{ +/** \brief An item that is responsible for fetching server-merge patches {{{ * that need to be applied to a given package index file. * * After downloading and applying a single patch, this item will @@ -417,8 +835,10 @@ class pkgAcqDiffIndex : public pkgAcquire::Item * * \sa pkgAcqDiffIndex, pkgAcqIndex */ -class pkgAcqIndexDiffs : public pkgAcquire::Item +class APT_HIDDEN pkgAcqIndexDiffs : public pkgAcqBaseIndex { + void *d; + private: /** \brief Queue up the next diff download. @@ -430,20 +850,20 @@ class pkgAcqIndexDiffs : public pkgAcquire::Item * \return \b true if an applicable diff was found, \b false * otherwise. */ - bool QueueNextDiff(); + APT_HIDDEN bool QueueNextDiff(); /** \brief Handle tasks that must be performed after the item * finishes downloading. * - * Dequeues the item and checks the resulting file's md5sum - * against ExpectedHash after the last patch was applied. + * Dequeues the item and checks the resulting file's hashsums + * against ExpectedHashes after the last patch was applied. * There is no need to check the md5/sha1 after a "normal" * patch because QueueNextDiff() will check the sha1 later. * * \param allDone If \b true, the file was entirely reconstructed, * and its md5sum is verified. */ - void Finish(bool allDone=false); + APT_HIDDEN void Finish(bool allDone=false); protected: @@ -452,23 +872,8 @@ class pkgAcqIndexDiffs : public pkgAcquire::Item */ bool Debug; - /** \brief A description of the item that is currently being - * downloaded. - */ - pkgAcquire::ItemDesc Desc; - - /** \brief The URI of the package index file that is being - * reconstructed. - */ - string RealURI; - - /** \brief The HashSum of the package index file that is being - * reconstructed. - */ - HashString ExpectedHash; - /** A description of the file being downloaded. */ - string Description; + std::string Description; /** The patches that remain to be downloaded, including the patch * being downloaded right now. This list should be ordered so @@ -478,10 +883,7 @@ class pkgAcqIndexDiffs : public pkgAcquire::Item * dictionary instead of relying on ordering and stripping them * off the front? */ - vector available_patches; - - /** Stop applying patches when reaching that sha1 */ - string ServerSha1; + std::vector available_patches; /** The current status of this patch. */ enum DiffState @@ -506,16 +908,16 @@ class pkgAcqIndexDiffs : public pkgAcquire::Item * This method will fall back to downloading the whole index file * outright; its arguments are ignored. */ - virtual void Failed(string Message,pkgAcquire::MethodConfig *Cnf); + virtual void Failed(std::string Message,pkgAcquire::MethodConfig *Cnf); - virtual void Done(string Message,unsigned long long Size,string Md5Hash, + virtual void Done(std::string Message,unsigned long long Size, HashStringList const &Hashes, pkgAcquire::MethodConfig *Cnf); - virtual string DescURI() {return RealURI + "Index";}; + virtual std::string DescURI() {return RealURI + "IndexDiffs";}; /** \brief Create an index diff item. * * After filling in its basic fields, this invokes Finish(true) if - * #diffs is empty, or QueueNextDiff() otherwise. + * \a diffs is empty, or QueueNextDiff() otherwise. * * \param Owner The pkgAcquire object that owns this item. * @@ -526,7 +928,7 @@ class pkgAcqIndexDiffs : public pkgAcquire::Item * * \param ShortDesc A brief description of this item. * - * \param ExpectedHash The expected md5sum of the completely + * \param ExpectedHashes The expected hashsums of the completely * reconstructed package index file; the index file will be tested * against this value when it is entirely reconstructed. * @@ -534,10 +936,12 @@ class pkgAcqIndexDiffs : public pkgAcquire::Item * should be ordered so that each diff appears before any diff * that depends on it. */ - pkgAcqIndexDiffs(pkgAcquire *Owner,string URI,string URIDesc, - string ShortDesc, HashString ExpectedHash, - string ServerSha1, - vector diffs=vector()); + pkgAcqIndexDiffs(pkgAcquire *Owner, + pkgAcqMetaBase *TransactionManager, + struct IndexTarget const * const Target, + HashStringList const &ExpectedHash, + indexRecords *MetaIndexParser, + std::vector diffs=std::vector()); }; /*}}}*/ /** \brief An acquire item that is responsible for fetching an index {{{ @@ -547,45 +951,77 @@ class pkgAcqIndexDiffs : public pkgAcquire::Item * * \todo Why does pkgAcqIndex have protected members? */ -class pkgAcqIndex : public pkgAcquire::Item +class APT_HIDDEN pkgAcqIndex : public pkgAcqBaseIndex { + void *d; + protected: - /** \brief If \b true, the index file has been decompressed. */ - bool Decompression; + /** \brief The stages the method goes through + * + * The method first downloads the indexfile, then its decompressed (or + * copied) and verified + */ + enum AllStages { + STAGE_DOWNLOAD, + STAGE_DECOMPRESS_AND_VERIFY, + }; + AllStages Stage; + + /** \brief Handle what needs to be done when the download is done */ + void StageDownloadDone(std::string Message, + HashStringList const &Hashes, + pkgAcquire::MethodConfig *Cfg); + + /** \brief Handle what needs to be done when the decompression/copy is + * done + */ + void StageDecompressDone(std::string Message, + HashStringList const &Hashes, + pkgAcquire::MethodConfig *Cfg); - /** \brief If \b true, the partially downloaded file will be + /** \brief If \b set, this partially downloaded file will be * removed when the download completes. */ - bool Erase; + std::string EraseFileName; - /** \brief The download request that is currently being - * processed. + /** \brief The compression-related file extensions that are being + * added to the downloaded file one by one if first fails (e.g., "gz bz2"). */ - pkgAcquire::ItemDesc Desc; + std::string CompressionExtensions; - /** \brief The object that is actually being fetched (minus any - * compression-related extensions). - */ - string RealURI; + /** \brief The actual compression extension currently used */ + std::string CurrentCompressionExtension; - /** \brief The expected hashsum of the decompressed index file. */ - HashString ExpectedHash; + /** \brief Do the changes needed to fetch via AptByHash (if needed) */ + void InitByHashIfNeeded(const std::string MetaKey); - /** \brief The compression-related file extensions that are being - * added to the downloaded file one by one if first fails (e.g., "gz bz2"). + /** \brief Auto select the right compression to use */ + void AutoSelectCompression(); + + /** \brief Get the full pathname of the final file for the current URI */ - string CompressionExtension; + std::string GetFinalFilename() const; + + /** \brief Schedule file for verification after a IMS hit */ + void ReverifyAfterIMS(); + + /** \brief Validate the downloaded index file */ + bool ValidateFile(const std::string &FileName); public: // Specialized action members - virtual void Failed(string Message,pkgAcquire::MethodConfig *Cnf); - virtual void Done(string Message,unsigned long long Size,string Md5Hash, + virtual void Failed(std::string Message,pkgAcquire::MethodConfig *Cnf); + virtual void Done(std::string Message,unsigned long long Size, + HashStringList const &Hashes, pkgAcquire::MethodConfig *Cnf); - virtual string Custom600Headers(); - virtual string DescURI() {return Desc.URI;}; - virtual string HashSum() {return ExpectedHash.toStr(); }; +#if APT_PKG_ABI >= 413 + virtual std::string Custom600Headers() const; +#else + virtual std::string Custom600Headers(); +#endif + virtual std::string DescURI() {return Desc.URI;}; /** \brief Create a pkgAcqIndex. * @@ -598,7 +1034,7 @@ class pkgAcqIndex : public pkgAcquire::Item * * \param ShortDesc A brief description of this index file. * - * \param ExpectedHash The expected hashsum of this index file. + * \param ExpectedHashes The expected hashsum of this index file. * * \param compressExt The compression-related extension with which * this index file should be downloaded, or "" to autodetect @@ -606,263 +1042,50 @@ class pkgAcqIndex : public pkgAcquire::Item * default is ".lzma" or ".bz2" (if the needed binaries are present) * fallback is ".gz" or none. */ - pkgAcqIndex(pkgAcquire *Owner,string URI,string URIDesc, - string ShortDesc, HashString ExpectedHash, - string compressExt=""); - pkgAcqIndex(pkgAcquire *Owner, struct IndexTarget const * const Target, - HashString const &ExpectedHash, indexRecords const *MetaIndexParser); - void Init(string const &URI, string const &URIDesc, string const &ShortDesc); -}; - /*}}}*/ -/** \brief An acquire item that is responsible for fetching a {{{ - * translated index file. - * - * The only difference from pkgAcqIndex is that transient failures - * are suppressed: no error occurs if the translated index file is - * missing. - */ -class pkgAcqIndexTrans : public pkgAcqIndex -{ - public: - - virtual void Failed(string Message,pkgAcquire::MethodConfig *Cnf); - virtual string Custom600Headers(); - - /** \brief Create a pkgAcqIndexTrans. - * - * \param Owner The pkgAcquire object with which this item is - * associated. - * - * \param URI The URI of the index file that is to be downloaded. - * - * \param URIDesc A "URI-style" description of this index file. - * - * \param ShortDesc A brief description of this index file. - */ - pkgAcqIndexTrans(pkgAcquire *Owner,string URI,string URIDesc, - string ShortDesc); - pkgAcqIndexTrans(pkgAcquire *Owner, struct IndexTarget const * const Target, - HashString const &ExpectedHash, indexRecords const *MetaIndexParser); + pkgAcqIndex(pkgAcquire *Owner,std::string URI,std::string URIDesc, + std::string ShortDesc, HashStringList const &ExpectedHashes); + pkgAcqIndex(pkgAcquire *Owner, pkgAcqMetaBase *TransactionManager, + IndexTarget const * const Target, + HashStringList const &ExpectedHash, + indexRecords *MetaIndexParser); + + void Init(std::string const &URI, std::string const &URIDesc, + std::string const &ShortDesc); }; /*}}}*/ /** \brief Information about an index file. */ /*{{{*/ -struct IndexTarget +class APT_HIDDEN IndexTarget { + void *d; + + public: /** \brief A URI from which the index file can be downloaded. */ - string URI; + std::string URI; /** \brief A description of the index file. */ - string Description; + std::string Description; /** \brief A shorter description of the index file. */ - string ShortDesc; + std::string ShortDesc; /** \brief The key by which this index file should be * looked up within the meta signature file. */ - string MetaKey; + std::string MetaKey; - //FIXME: We should use virtual methods here instead… - bool IsOptional() const; - bool IsSubIndex() const; + virtual bool IsOptional() const { + return false; + } }; /*}}}*/ /** \brief Information about an optional index file. */ /*{{{*/ -struct OptionalIndexTarget : public IndexTarget -{ -}; - /*}}}*/ - -/** \brief An acquire item that downloads the detached signature {{{ - * of a meta-index (Release) file, then queues up the release - * file itself. - * - * \todo Why protected members? - * - * \sa pkgAcqMetaIndex - */ -class pkgAcqMetaSig : public pkgAcquire::Item -{ - protected: - /** \brief The last good signature file */ - string LastGoodSig; - - /** \brief The fetch request that is currently being processed. */ - pkgAcquire::ItemDesc Desc; - - /** \brief The URI of the signature file. Unlike Desc.URI, this is - * never modified; it is used to determine the file that is being - * downloaded. - */ - string RealURI; - - /** \brief The URI of the meta-index file to be fetched after the signature. */ - string MetaIndexURI; - - /** \brief A "URI-style" description of the meta-index file to be - * fetched after the signature. - */ - string MetaIndexURIDesc; - - /** \brief A brief description of the meta-index file to be fetched - * after the signature. - */ - string MetaIndexShortDesc; - - /** \brief A package-system-specific parser for the meta-index file. */ - indexRecords* MetaIndexParser; - - /** \brief The index files which should be looked up in the meta-index - * and then downloaded. - * - * \todo Why a list of pointers instead of a list of structs? - */ - const vector* IndexTargets; - - public: - - // Specialized action members - virtual void Failed(string Message,pkgAcquire::MethodConfig *Cnf); - virtual void Done(string Message,unsigned long long Size,string Md5Hash, - pkgAcquire::MethodConfig *Cnf); - virtual string Custom600Headers(); - virtual string DescURI() {return RealURI; }; - - /** \brief Create a new pkgAcqMetaSig. */ - pkgAcqMetaSig(pkgAcquire *Owner,string URI,string URIDesc, string ShortDesc, - string MetaIndexURI, string MetaIndexURIDesc, string MetaIndexShortDesc, - const vector* IndexTargets, - indexRecords* MetaIndexParser); -}; - /*}}}*/ -/** \brief An item that is responsible for downloading the meta-index {{{ - * file (i.e., Release) itself and verifying its signature. - * - * Once the download and verification are complete, the downloads of - * the individual index files are queued up using pkgAcqDiffIndex. - * If the meta-index file had a valid signature, the expected hashsums - * of the index files will be the md5sums listed in the meta-index; - * otherwise, the expected hashsums will be "" (causing the - * authentication of the index files to be bypassed). - */ -class pkgAcqMetaIndex : public pkgAcquire::Item -{ - protected: - /** \brief The fetch command that is currently being processed. */ - pkgAcquire::ItemDesc Desc; - - /** \brief The URI that is actually being downloaded; never - * modified by pkgAcqMetaIndex. - */ - string RealURI; - - /** \brief The file in which the signature for this index was stored. - * - * If empty, the signature and the md5sums of the individual - * indices will not be checked. - */ - string SigFile; - - /** \brief The index files to download. */ - const vector* IndexTargets; - - /** \brief The parser for the meta-index file. */ - indexRecords* MetaIndexParser; - - /** \brief If \b true, the index's signature is currently being verified. - */ - bool AuthPass; - // required to deal gracefully with problems caused by incorrect ims hits - bool IMSHit; - - /** \brief Check that the release file is a release file for the - * correct distribution. - * - * \return \b true if no fatal errors were encountered. - */ - bool VerifyVendor(string Message); - - /** \brief Called when a file is finished being retrieved. - * - * If the file was not downloaded to DestFile, a copy process is - * set up to copy it to DestFile; otherwise, Complete is set to \b - * true and the file is moved to its final location. - * - * \param Message The message block received from the fetch - * subprocess. - */ - void RetrievalDone(string Message); - - /** \brief Called when authentication succeeded. - * - * Sanity-checks the authenticated file, queues up the individual - * index files for download, and saves the signature in the lists - * directory next to the authenticated list file. - * - * \param Message The message block received from the fetch - * subprocess. - */ - void AuthDone(string Message); - - /** \brief Starts downloading the individual index files. - * - * \param verify If \b true, only indices whose expected hashsum - * can be determined from the meta-index will be downloaded, and - * the hashsums of indices will be checked (reporting - * #StatAuthError if there is a mismatch). If verify is \b false, - * no hashsum checking will be performed. - */ - void QueueIndexes(bool verify); - - public: - - // Specialized action members - virtual void Failed(string Message,pkgAcquire::MethodConfig *Cnf); - virtual void Done(string Message,unsigned long long Size, string Hash, - pkgAcquire::MethodConfig *Cnf); - virtual string Custom600Headers(); - virtual string DescURI() {return RealURI; }; - - /** \brief Create a new pkgAcqMetaIndex. */ - pkgAcqMetaIndex(pkgAcquire *Owner, - string URI,string URIDesc, string ShortDesc, - string SigFile, - const vector* IndexTargets, - indexRecords* MetaIndexParser); -}; - /*}}}*/ -/** \brief An item repsonsible for downloading clearsigned metaindexes {{{*/ -class pkgAcqMetaClearSig : public pkgAcqMetaIndex +class APT_HIDDEN OptionalIndexTarget : public IndexTarget { - /** \brief The URI of the meta-index file for the detached signature */ - string MetaIndexURI; - - /** \brief A "URI-style" description of the meta-index file */ - string MetaIndexURIDesc; - - /** \brief A brief description of the meta-index file */ - string MetaIndexShortDesc; - - /** \brief The URI of the detached meta-signature file if the clearsigned one failed. */ - string MetaSigURI; - - /** \brief A "URI-style" description of the meta-signature file */ - string MetaSigURIDesc; - - /** \brief A brief description of the meta-signature file */ - string MetaSigShortDesc; - -public: - void Failed(string Message,pkgAcquire::MethodConfig *Cnf); - virtual string Custom600Headers(); + void *d; - /** \brief Create a new 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); + virtual bool IsOptional() const { + return true; + } }; /*}}}*/ /** \brief An item that is responsible for fetching a package file. {{{ @@ -872,13 +1095,12 @@ public: */ class pkgAcqArchive : public pkgAcquire::Item { + void *d; + protected: /** \brief The package version being fetched. */ pkgCache::VerIterator Version; - /** \brief The fetch command that is currently being processed. */ - pkgAcquire::ItemDesc Desc; - /** \brief The list of sources from which to pick archives to * download this package from. */ @@ -889,13 +1111,10 @@ class pkgAcqArchive : public pkgAcquire::Item */ pkgRecords *Recs; - /** \brief The hashsum of this package. */ - HashString ExpectedHash; - /** \brief A location in which the actual filename of the package * should be stored. */ - string &StoreFilename; + std::string &StoreFilename; /** \brief The next file for this version to try to download. */ pkgCache::VerFileIterator Vf; @@ -917,15 +1136,18 @@ class pkgAcqArchive : public pkgAcquire::Item public: - virtual void Failed(string Message,pkgAcquire::MethodConfig *Cnf); - virtual void Done(string Message,unsigned long long Size,string Hash, + virtual void Failed(std::string Message,pkgAcquire::MethodConfig *Cnf); + virtual void Done(std::string Message,unsigned long long Size, HashStringList const &Hashes, pkgAcquire::MethodConfig *Cnf); - virtual string DescURI() {return Desc.URI;}; - virtual string ShortDesc() {return Desc.ShortDesc;}; + virtual std::string DescURI() {return Desc.URI;}; + virtual std::string ShortDesc() {return Desc.ShortDesc;}; virtual void Finished(); - virtual string HashSum() {return ExpectedHash.toStr(); }; +#if APT_PKG_ABI >= 413 + virtual bool IsTrusted() const; +#else virtual bool IsTrusted(); - +#endif + /** \brief Create a new pkgAcqArchive. * * \param Owner The pkgAcquire object with which this item is @@ -939,14 +1161,14 @@ class pkgAcqArchive : public pkgAcquire::Item * * \param Version The package version to download. * - * \param StoreFilename A location in which the actual filename of + * \param[out] StoreFilename A location in which the actual filename of * the package should be stored. It will be set to a guessed * basename in the constructor, and filled in with a fully * qualified filename once the download finishes. */ pkgAcqArchive(pkgAcquire *Owner,pkgSourceList *Sources, pkgRecords *Recs,pkgCache::VerIterator const &Version, - string &StoreFilename); + std::string &StoreFilename); }; /*}}}*/ /** \brief Retrieve an arbitrary file to the current directory. {{{ @@ -957,11 +1179,7 @@ class pkgAcqArchive : public pkgAcquire::Item */ class pkgAcqFile : public pkgAcquire::Item { - /** \brief The currently active download process. */ - pkgAcquire::ItemDesc Desc; - - /** \brief The hashsum of the file to download, if it is known. */ - HashString ExpectedHash; + void *d; /** \brief How many times to retry the download, set from * Acquire::Retries. @@ -974,12 +1192,15 @@ class pkgAcqFile : public pkgAcquire::Item public: // Specialized action members - virtual void Failed(string Message,pkgAcquire::MethodConfig *Cnf); - virtual void Done(string Message,unsigned long long Size,string CalcHash, + virtual void Failed(std::string Message,pkgAcquire::MethodConfig *Cnf); + virtual void Done(std::string Message,unsigned long long Size, HashStringList const &CalcHashes, pkgAcquire::MethodConfig *Cnf); - virtual string DescURI() {return Desc.URI;}; - virtual string HashSum() {return ExpectedHash.toStr(); }; - virtual string Custom600Headers(); + virtual std::string DescURI() {return Desc.URI;}; +#if APT_PKG_ABI >= 413 + virtual std::string Custom600Headers() const; +#else + virtual std::string Custom600Headers(); +#endif /** \brief Create a new pkgAcqFile object. * @@ -988,8 +1209,8 @@ class pkgAcqFile : public pkgAcquire::Item * * \param URI The URI to download. * - * \param Hash The hashsum of the file to download, if it is known; - * otherwise "". + * \param Hashes The hashsums of the file to download, if they are known; + * otherwise empty list. * * \param Size The size of the file to download, if it is known; * otherwise 0. @@ -1006,15 +1227,15 @@ class pkgAcqFile : public pkgAcquire::Item * \param IsIndexFile The file is considered a IndexFile and cache-control * headers like "cache-control: max-age=0" are send * - * If DestFilename is empty, download to DestDir/ if - * DestDir is non-empty, $CWD/ otherwise. If + * If DestFilename is empty, download to DestDir/\ if + * DestDir is non-empty, $CWD/\ otherwise. If * DestFilename is NOT empty, DestDir is ignored and DestFilename * is the absolute name to which the file should be downloaded. */ - pkgAcqFile(pkgAcquire *Owner, string URI, string Hash, unsigned long long Size, - string Desc, string ShortDesc, - const string &DestDir="", const string &DestFilename="", + pkgAcqFile(pkgAcquire *Owner, std::string URI, HashStringList const &Hashes, unsigned long long Size, + std::string Desc, std::string ShortDesc, + const std::string &DestDir="", const std::string &DestFilename="", bool IsIndexFile=false); }; /*}}}*/