apt-pkg/packagemanager.h

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 /* ######################################################################
   4
   5    Package Manager - Abstacts the package manager
   6
   7    Three steps are
   8      - Aquiration of archives (stores the list of final file names)
   9      - Sorting of operations
  10      - Invokation of package manager
  11
  12    This is the final stage when the package cache entities get converted
  13    into file names and the state stored in a DepCache is transformed
  14    into a series of operations.
  15
  16    In the final scheme of things this may serve as a director class to
  17    access the actual install methods based on the file type being
  18    installed.
  19
  20    ##################################################################### */
  21                                                                         /*}}}*/
  22 #ifndef PKGLIB_PACKAGEMANAGER_H
  23 #define PKGLIB_PACKAGEMANAGER_H
  24
  25 #include <apt-pkg/pkgcache.h>
  26 #include <apt-pkg/init.h>
  27 #include <apt-pkg/edsp.h>
  28 #include <apt-pkg/macros.h>
  29
  30 #include <string>
  31 #include <set>
  32
  33 #ifndef APT_10_CLEANER_HEADERS
  34 #include <apt-pkg/install-progress.h>
  35 #include <iostream>
  36 #endif
  37 #ifndef APT_8_CLEANER_HEADERS
  38 #include <apt-pkg/depcache.h>
  39 using std::string;
  40 #endif
  41
  42 class pkgAcquire;
  43 class pkgDepCache;
  44 class pkgSourceList;
  45 class pkgOrderList;
  46 class pkgRecords;
  47 class OpProgress;
  48 class pkgPackageManager;
  49 namespace APT {
  50    namespace Progress {
  51       class PackageManager;
  52    }
  53 }
  54
  55 class pkgPackageManager : protected pkgCache::Namespace
  56 {
  57    public:
  58
  59    enum OrderResult {Completed,Failed,Incomplete};
  60    static bool SigINTStop;
  61
  62    protected:
  63    std::string *FileNames;
  64    pkgDepCache &Cache;
  65    pkgOrderList *List;
  66    bool Debug;
  67    bool NoImmConfigure;
  68    bool ImmConfigureAll;
  69
  70    /** \brief saves packages dpkg let disappear
  71
  72        This way APT can retreat from trying to configure these
  73        packages later on and a front-end can choose to display a
  74        notice to inform the user about these disappears.
  75    */
  76    std::set<std::string> disappearedPkgs;
  77
  78    void ImmediateAdd(PkgIterator P, bool UseInstallVer, unsigned const int &Depth = 0);
  79    virtual OrderResult OrderInstall();
  80    bool CheckRConflicts(PkgIterator Pkg,DepIterator Dep,const char *Ver);
  81    bool CheckRBreaks(PkgIterator const &Pkg,DepIterator Dep,const char * const Ver);
  82    bool CreateOrderList();
  83
  84    // Analysis helpers
  85    bool DepAlwaysTrue(DepIterator D) APT_PURE;
  86
  87    // Install helpers
  88    bool ConfigureAll();
  89    bool SmartConfigure(PkgIterator Pkg, int const Depth) APT_MUSTCHECK;
  90    //FIXME: merge on abi break
  91    bool SmartUnPack(PkgIterator Pkg) APT_MUSTCHECK;
  92    bool SmartUnPack(PkgIterator Pkg, bool const Immediate, int const Depth) APT_MUSTCHECK;
  93    bool SmartRemove(PkgIterator Pkg) APT_MUSTCHECK;
  94    bool EarlyRemove(PkgIterator Pkg, DepIterator const * const Dep) APT_MUSTCHECK;
  95    APT_DEPRECATED bool EarlyRemove(PkgIterator Pkg) APT_MUSTCHECK;
  96
  97    // The Actual installation implementation
  98    virtual bool Install(PkgIterator /*Pkg*/,std::string /*File*/) {return false;};
  99    virtual bool Configure(PkgIterator /*Pkg*/) {return false;};
 100    virtual bool Remove(PkgIterator /*Pkg*/,bool /*Purge*/=false) {return false;};
 101    virtual bool Go(APT::Progress::PackageManager * /*progress*/) {return true;};
 102    virtual bool Go(int /*statusFd*/=-1) {return true;};
 103
 104    virtual void Reset() {};
 105
 106    // the result of the operation
 107    OrderResult Res;
 108
 109    public:
 110
 111    // Main action members
 112    bool GetArchives(pkgAcquire *Owner,pkgSourceList *Sources,
 113                     pkgRecords *Recs);
 114
 115    // Do the installation
 116    OrderResult DoInstall(APT::Progress::PackageManager *progress);
 117    // compat
 118    APT_DEPRECATED_MSG("Use APT::Progress::PackageManager subclass instead of fd") OrderResult DoInstall(int statusFd=-1);
 119
 120    friend bool EIPP::OrderInstall(char const * const planner, pkgPackageManager * const PM,
 121          unsigned int const version, OpProgress * const Progress);
 122    friend bool EIPP::ReadResponse(int const input, pkgPackageManager * const PM,
 123          OpProgress * const Progress);
 124
 125    // stuff that needs to be done before the fork() of a library that
 126    // uses apt
 127    OrderResult DoInstallPreFork() {
 128       Res = OrderInstall();
 129       return Res;
 130    };
 131    // stuff that needs to be done after the fork
 132    OrderResult DoInstallPostFork(APT::Progress::PackageManager *progress);
 133    // compat
 134    APT_DEPRECATED_MSG("Use APT::Progress::PackageManager subclass instead of fd") OrderResult DoInstallPostFork(int statusFd=-1);
 135
 136    // ?
 137    bool FixMissing();
 138
 139    /** \brief returns all packages dpkg let disappear */
 140    inline std::set<std::string> GetDisappearedPackages() { return disappearedPkgs; };
 141
 142    explicit pkgPackageManager(pkgDepCache *Cache);
 143    virtual ~pkgPackageManager();
 144
 145    private:
 146    void * const d;
 147    enum APT_HIDDEN SmartAction { UNPACK_IMMEDIATE, UNPACK, CONFIGURE };
 148    APT_HIDDEN bool NonLoopingSmart(SmartAction const action, pkgCache::PkgIterator &Pkg,
 149       pkgCache::PkgIterator DepPkg, int const Depth, bool const PkgLoop,
 150       bool * const Bad, bool * const Changed) APT_MUSTCHECK;
 151 };
 152
 153 #endif