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    Cnf.Set("Dir::State::mirrors","mirrors/");
  55
  56    // Cache
  57    Cnf.Set("Dir::Cache","var/cache/apt/");
  58    Cnf.Set("Dir::Cache::archives","archives/");
  59    Cnf.Set("Dir::Cache::srcpkgcache","srcpkgcache.bin");
  60    Cnf.Set("Dir::Cache::pkgcache","pkgcache.bin");
  61
  62    // Configuration
  63    Cnf.Set("Dir::Etc","etc/apt/");
  64    Cnf.Set("Dir::Etc::sourcelist","sources.list");
  65    Cnf.Set("Dir::Etc::sourceparts","sources.list.d");
  66    Cnf.Set("Dir::Etc::vendorlist","vendors.list");
  67    Cnf.Set("Dir::Etc::vendorparts","vendors.list.d");
  68    Cnf.Set("Dir::Etc::main","apt.conf");
  69    Cnf.Set("Dir::Etc::netrc", "auth.conf");
  70    Cnf.Set("Dir::Etc::parts","apt.conf.d");
  71    Cnf.Set("Dir::Etc::preferences","preferences");
  72    Cnf.Set("Dir::Etc::preferencesparts","preferences.d");
  73    Cnf.Set("Dir::Etc::trusted", "trusted.gpg");
  74    Cnf.Set("Dir::Etc::trustedparts","trusted.gpg.d");
  75    Cnf.Set("Dir::Bin::methods","/usr/lib/apt/methods");
  76    Cnf.Set("Dir::Media::MountPath","/media/apt");
  77
  78    // State
  79    Cnf.Set("Dir::Log","var/log/apt");
  80    Cnf.Set("Dir::Log::Terminal","term.log");
  81    Cnf.Set("Dir::Log::History","history.log");
  82
  83    Cnf.Set("Dir::Ignore-Files-Silently::", "~$");
  84    Cnf.Set("Dir::Ignore-Files-Silently::", "\\.disabled$");
  85    Cnf.Set("Dir::Ignore-Files-Silently::", "\\.bak$");
  86    Cnf.Set("Dir::Ignore-Files-Silently::", "\\.dpkg-[a-z]+$");
  87
  88    // Default cdrom mount point
  89    Cnf.Set("Acquire::cdrom::mount", "/media/cdrom/");
  90
  91    bool Res = true;
  92
  93    // Read an alternate config file
  94    const char *Cfg = getenv("APT_CONFIG");
  95    if (Cfg != 0)
  96    {
  97       if (RealFileExists(Cfg) == true)
  98          Res &= ReadConfigFile(Cnf,Cfg);
  99       else
 100          _error->WarningE("RealFileExists",_("Unable to read %s"),Cfg);
 101    }
 102
 103    // Read the configuration parts dir
 104    string Parts = Cnf.FindDir("Dir::Etc::parts");
 105    if (DirectoryExists(Parts) == true)
 106       Res &= ReadConfigDir(Cnf,Parts);
 107    else
 108       _error->WarningE("DirectoryExists",_("Unable to read %s"),Parts.c_str());
 109
 110    // Read the main config file
 111    string FName = Cnf.FindFile("Dir::Etc::main");
 112    if (RealFileExists(FName) == true)
 113       Res &= ReadConfigFile(Cnf,FName);
 114
 115    if (Res == false)
 116       return false;
 117
 118    if (Cnf.FindB("Debug::pkgInitConfig",false) == true)
 119       Cnf.Dump();
 120
 121 #ifdef APT_DOMAIN
 122    if (Cnf.Exists("Dir::Locale"))
 123    {
 124       bindtextdomain(APT_DOMAIN,Cnf.FindDir("Dir::Locale").c_str());
 125       bindtextdomain(textdomain(0),Cnf.FindDir("Dir::Locale").c_str());
 126    }
 127 #endif
 128
 129    return true;
 130 }
 131                                                                         /*}}}*/
 132 // pkgInitSystem - Initialize the _system calss                         /*{{{*/
 133 // ---------------------------------------------------------------------
 134 /* */
 135 bool pkgInitSystem(Configuration &Cnf,pkgSystem *&Sys)
 136 {
 137    Sys = 0;
 138    string Label = Cnf.Find("Apt::System","");
 139    if (Label.empty() == false)
 140    {
 141       Sys = pkgSystem::GetSystem(Label.c_str());
 142       if (Sys == 0)
 143          return _error->Error(_("Packaging system '%s' is not supported"),Label.c_str());
 144    }
 145    else
 146    {
 147       signed MaxScore = 0;
 148       for (unsigned I = 0; I != pkgSystem::GlobalListLen; I++)
 149       {
 150          signed Score = pkgSystem::GlobalList[I]->Score(Cnf);
 151          if (Score > MaxScore)
 152          {
 153             MaxScore = Score;
 154             Sys = pkgSystem::GlobalList[I];
 155          }
 156       }
 157
 158       if (Sys == 0)
 159          return _error->Error(_("Unable to determine a suitable packaging system type"));
 160    }
 161
 162    return Sys->Initialize(Cnf);
 163 }
 164                                                                         /*}}}*/