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