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<config.h>
  12
  13 #include <apt-pkg/init.h>
  14 #include <apt-pkg/fileutl.h>
  15 #include <apt-pkg/error.h>
  16
  17 #include <cstdlib>
  18 #include <sys/stat.h>
  19
  20 #include <apti18n.h>
  21                                                                         /*}}}*/
  22
  23 #define Stringfy_(x) # x
  24 #define Stringfy(x)  Stringfy_(x)
  25 const char *pkgVersion = VERSION;
  26 const char *pkgLibVersion = Stringfy(APT_PKG_MAJOR) "."
  27                             Stringfy(APT_PKG_MINOR) "."
  28                             Stringfy(APT_PKG_RELEASE);
  29
  30 // pkgInitConfig - Initialize the configuration class                   /*{{{*/
  31 // ---------------------------------------------------------------------
  32 /* Directories are specified in such a way that the FindDir function will
  33    understand them. That is, if they don't start with a / then their parent
  34    is prepended, this allows a fair degree of flexability. */
  35 bool pkgInitConfig(Configuration &Cnf)
  36 {
  37    // General APT things
  38    Cnf.CndSet("APT::Architecture", COMMON_ARCH);
  39    if (Cnf.Exists("APT::Build-Essential") == false)
  40       Cnf.Set("APT::Build-Essential::", "build-essential");
  41    Cnf.CndSet("APT::Install-Recommends", true);
  42    Cnf.CndSet("APT::Install-Suggests", false);
  43    Cnf.CndSet("Dir","/");
  44
  45    // State
  46    Cnf.CndSet("Dir::State","var/lib/apt/");
  47
  48    /* Just in case something goes horribly wrong, we can fall back to the
  49       old /var/state paths.. */
  50    struct stat St;
  51    if (stat("/var/lib/apt/.",&St) != 0 &&
  52        stat("/var/state/apt/.",&St) == 0)
  53       Cnf.CndSet("Dir::State","var/state/apt/");
  54
  55    Cnf.CndSet("Dir::State::lists","lists/");
  56    Cnf.CndSet("Dir::State::cdroms","cdroms.list");
  57    Cnf.CndSet("Dir::State::mirrors","mirrors/");
  58
  59    // Cache
  60    Cnf.CndSet("Dir::Cache","var/cache/apt/");
  61    Cnf.CndSet("Dir::Cache::archives","archives/");
  62    Cnf.CndSet("Dir::Cache::srcpkgcache","srcpkgcache.bin");
  63    Cnf.CndSet("Dir::Cache::pkgcache","pkgcache.bin");
  64
  65    // Configuration
  66    Cnf.CndSet("Dir::Etc","etc/apt/");
  67    Cnf.CndSet("Dir::Etc::sourcelist","sources.list");
  68    Cnf.CndSet("Dir::Etc::sourceparts","sources.list.d");
  69    Cnf.CndSet("Dir::Etc::vendorlist","vendors.list");
  70    Cnf.CndSet("Dir::Etc::vendorparts","vendors.list.d");
  71    Cnf.CndSet("Dir::Etc::main","apt.conf");
  72    Cnf.CndSet("Dir::Etc::netrc", "auth.conf");
  73    Cnf.CndSet("Dir::Etc::parts","apt.conf.d");
  74    Cnf.CndSet("Dir::Etc::preferences","preferences");
  75    Cnf.CndSet("Dir::Etc::preferencesparts","preferences.d");
  76    Cnf.CndSet("Dir::Etc::trusted", "trusted.gpg");
  77    Cnf.CndSet("Dir::Etc::trustedparts","trusted.gpg.d");
  78    Cnf.CndSet("Dir::Bin::methods","/usr/lib/apt/methods");
  79    Cnf.CndSet("Dir::Bin::solvers::","/usr/lib/apt/solvers");
  80    Cnf.CndSet("Dir::Media::MountPath","/media/apt");
  81
  82    // State
  83    Cnf.CndSet("Dir::Log","var/log/apt");
  84    Cnf.CndSet("Dir::Log::Terminal","term.log");
  85    Cnf.CndSet("Dir::Log::History","history.log");
  86
  87    if (Cnf.Exists("Dir::Ignore-Files-Silently") == false)
  88    {
  89       Cnf.Set("Dir::Ignore-Files-Silently::", "~$");
  90       Cnf.Set("Dir::Ignore-Files-Silently::", "\\.disabled$");
  91       Cnf.Set("Dir::Ignore-Files-Silently::", "\\.bak$");
  92       Cnf.Set("Dir::Ignore-Files-Silently::", "\\.dpkg-[a-z]+$");
  93    }
  94
  95    // Default cdrom mount point
  96    Cnf.CndSet("Acquire::cdrom::mount", "/media/cdrom/");
  97
  98    bool Res = true;
  99
 100    // Read an alternate config file
 101    const char *Cfg = getenv("APT_CONFIG");
 102    if (Cfg != 0)
 103    {
 104       if (RealFileExists(Cfg) == true)
 105          Res &= ReadConfigFile(Cnf,Cfg);
 106       else
 107          _error->WarningE("RealFileExists",_("Unable to read %s"),Cfg);
 108    }
 109
 110    // Read the configuration parts dir
 111    string Parts = Cnf.FindDir("Dir::Etc::parts");
 112    if (DirectoryExists(Parts) == true)
 113       Res &= ReadConfigDir(Cnf,Parts);
 114    else
 115       _error->WarningE("DirectoryExists",_("Unable to read %s"),Parts.c_str());
 116
 117    // Read the main config file
 118    string FName = Cnf.FindFile("Dir::Etc::main");
 119    if (RealFileExists(FName) == true)
 120       Res &= ReadConfigFile(Cnf,FName);
 121
 122    if (Res == false)
 123       return false;
 124
 125    if (Cnf.FindB("Debug::pkgInitConfig",false) == true)
 126       Cnf.Dump();
 127
 128 #ifdef APT_DOMAIN
 129    if (Cnf.Exists("Dir::Locale"))
 130    {
 131       bindtextdomain(APT_DOMAIN,Cnf.FindDir("Dir::Locale").c_str());
 132       bindtextdomain(textdomain(0),Cnf.FindDir("Dir::Locale").c_str());
 133    }
 134 #endif
 135
 136    return true;
 137 }
 138                                                                         /*}}}*/
 139 // pkgInitSystem - Initialize the _system calss                         /*{{{*/
 140 // ---------------------------------------------------------------------
 141 /* */
 142 bool pkgInitSystem(Configuration &Cnf,pkgSystem *&Sys)
 143 {
 144    Sys = 0;
 145    string Label = Cnf.Find("Apt::System","");
 146    if (Label.empty() == false)
 147    {
 148       Sys = pkgSystem::GetSystem(Label.c_str());
 149       if (Sys == 0)
 150          return _error->Error(_("Packaging system '%s' is not supported"),Label.c_str());
 151    }
 152    else
 153    {
 154       signed MaxScore = 0;
 155       for (unsigned I = 0; I != pkgSystem::GlobalListLen; I++)
 156       {
 157          signed Score = pkgSystem::GlobalList[I]->Score(Cnf);
 158          if (Score > MaxScore)
 159          {
 160             MaxScore = Score;
 161             Sys = pkgSystem::GlobalList[I];
 162          }
 163       }
 164
 165       if (Sys == 0)
 166          return _error->Error(_("Unable to determine a suitable packaging system type"));
 167    }
 168
 169    return Sys->Initialize(Cnf);
 170 }
 171                                                                         /*}}}*/