apt-pkg/init.cc

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: init.cc,v 1.20 2003/02/09 20:31:05 doogie Exp $
   4 /* ######################################################################
   5
   6    Init - Initialize the package library
   7
   8    ##################################################################### */
   9                                                                         /*}}}*/
  10 // Include files                                                        /*{{{*/
  11 #include <apt-pkg/init.h>
  12 #include <apt-pkg/fileutl.h>
  13 #include <apt-pkg/error.h>
  14
  15 #include <apti18n.h>
  16 #include <config.h>
  17 #include <cstdlib>
  18 #include <sys/stat.h>
  19                                                                         /*}}}*/
  20
  21 #define Stringfy_(x) # x
  22 #define Stringfy(x)  Stringfy_(x)
  23 const char *pkgVersion = VERSION;
  24 const char *pkgLibVersion = Stringfy(APT_PKG_MAJOR) "."
  25                             Stringfy(APT_PKG_MINOR) "."
  26                             Stringfy(APT_PKG_RELEASE);
  27
  28 // pkgInitConfig - Initialize the configuration class                   /*{{{*/
  29 // ---------------------------------------------------------------------
  30 /* Directories are specified in such a way that the FindDir function will
  31    understand them. That is, if they don't start with a / then their parent
  32    is prepended, this allows a fair degree of flexability. */
  33 bool pkgInitConfig(Configuration &Cnf)
  34 {
  35    // General APT things
  36    Cnf.Set("APT::Architecture", COMMON_ARCH);
  37    Cnf.Set("APT::Build-Essential::", "build-essential");
  38    Cnf.Set("APT::Install-Recommends", true);
  39    Cnf.Set("APT::Install-Suggests", false);
  40    Cnf.Set("Dir","/");
  41
  42    // State
  43    Cnf.Set("Dir::State","var/lib/apt/");
  44
  45    /* Just in case something goes horribly wrong, we can fall back to the
  46       old /var/state paths.. */
  47    struct stat St;
  48    if (stat("/var/lib/apt/.",&St) != 0 &&
  49        stat("/var/state/apt/.",&St) == 0)
  50       Cnf.Set("Dir::State","var/state/apt/");
  51
  52    Cnf.Set("Dir::State::lists","lists/");
  53    Cnf.Set("Dir::State::cdroms","cdroms.list");
  54
  55    // Cache
  56    Cnf.Set("Dir::Cache","var/cache/apt/");
  57    Cnf.Set("Dir::Cache::archives","archives/");
  58    Cnf.Set("Dir::Cache::srcpkgcache","srcpkgcache.bin");
  59    Cnf.Set("Dir::Cache::pkgcache","pkgcache.bin");
  60
  61    // Configuration
  62    Cnf.Set("Dir::Etc","etc/apt/");
  63    Cnf.Set("Dir::Etc::sourcelist","sources.list");
  64    Cnf.Set("Dir::Etc::sourceparts","sources.list.d");
  65    Cnf.Set("Dir::Etc::vendorlist","vendors.list");
  66    Cnf.Set("Dir::Etc::vendorparts","vendors.list.d");
  67    Cnf.Set("Dir::Etc::main","apt.conf");
  68    Cnf.Set("Dir::Etc::parts","apt.conf.d");
  69    Cnf.Set("Dir::Etc::preferences","preferences");
  70    Cnf.Set("Dir::Etc::preferencesparts","preferences.d");
  71    Cnf.Set("Dir::Bin::methods","/usr/lib/apt/methods");
  72
  73    // State
  74    Cnf.Set("Dir::Log","var/log/apt");
  75    Cnf.Set("Dir::Log::Terminal","term.log");
  76
  77    // Translation
  78    Cnf.Set("APT::Acquire::Translation", "environment");
  79
  80    bool Res = true;
  81
  82    // Read an alternate config file
  83    const char *Cfg = getenv("APT_CONFIG");
  84    if (Cfg != 0)
  85    {
  86       if (FileExists(Cfg) == true)
  87          Res &= ReadConfigFile(Cnf,Cfg);
  88       else
  89          _error->WarningE("FileExists",_("Unable to read %s"),Cfg);
  90    }
  91
  92    // Read the configuration parts dir
  93    string Parts = Cnf.FindDir("Dir::Etc::parts");
  94    if (FileExists(Parts) == true)
  95       Res &= ReadConfigDir(Cnf,Parts);
  96    else
  97       _error->WarningE("FileExists",_("Unable to read %s"),Parts.c_str());
  98
  99    // Read the main config file
 100    string FName = Cnf.FindFile("Dir::Etc::main");
 101    if (FileExists(FName) == true)
 102       Res &= ReadConfigFile(Cnf,FName);
 103
 104    if (Res == false)
 105       return false;
 106
 107    if (Cnf.FindB("Debug::pkgInitConfig",false) == true)
 108       Cnf.Dump();
 109
 110 #ifdef APT_DOMAIN
 111    if (Cnf.Exists("Dir::Locale"))
 112    {
 113       bindtextdomain(APT_DOMAIN,Cnf.FindDir("Dir::Locale").c_str());
 114       bindtextdomain(textdomain(0),Cnf.FindDir("Dir::Locale").c_str());
 115    }
 116 #endif
 117
 118    return true;
 119 }
 120                                                                         /*}}}*/
 121 // pkgInitSystem - Initialize the _system calss                         /*{{{*/
 122 // ---------------------------------------------------------------------
 123 /* */
 124 bool pkgInitSystem(Configuration &Cnf,pkgSystem *&Sys)
 125 {
 126    Sys = 0;
 127    string Label = Cnf.Find("Apt::System","");
 128    if (Label.empty() == false)
 129    {
 130       Sys = pkgSystem::GetSystem(Label.c_str());
 131       if (Sys == 0)
 132          return _error->Error(_("Packaging system '%s' is not supported"),Label.c_str());
 133    }
 134    else
 135    {
 136       signed MaxScore = 0;
 137       for (unsigned I = 0; I != pkgSystem::GlobalListLen; I++)
 138       {
 139          signed Score = pkgSystem::GlobalList[I]->Score(Cnf);
 140          if (Score > MaxScore)
 141          {
 142             MaxScore = Score;
 143             Sys = pkgSystem::GlobalList[I];
 144          }
 145       }
 146
 147       if (Sys == 0)
 148          return _error->Error(_("Unable to determine a suitable packaging system type"));
 149    }
 150
 151    return Sys->Initialize(Cnf);
 152 }
 153                                                                         /*}}}*/