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 const char *pkgCPU = COMMON_CPU;
  28 const char *pkgOS = COMMON_OS;
  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    if (strcmp(COMMON_OS,"linux") == 0 ||
  39        strcmp(COMMON_OS,"unknown") == 0)
  40       Cnf.Set("APT::Architecture",COMMON_CPU);
  41    else
  42       Cnf.Set("APT::Architecture",COMMON_OS "-" COMMON_CPU);
  43    Cnf.Set("APT::Build-Essential::", "build-essential");
  44    Cnf.Set("Dir","/");
  45
  46    // State
  47    Cnf.Set("Dir::State","var/lib/apt/");
  48
  49    /* Just in case something goes horribly wrong, we can fall back to the
  50       old /var/state paths.. */
  51    struct stat St;
  52    if (stat("/var/lib/apt/.",&St) != 0 &&
  53        stat("/var/state/apt/.",&St) == 0)
  54       Cnf.Set("Dir::State","var/state/apt/");
  55
  56    Cnf.Set("Dir::State::lists","lists/");
  57    Cnf.Set("Dir::State::cdroms","cdroms.list");
  58
  59    // Cache
  60    Cnf.Set("Dir::Cache","var/cache/apt/");
  61    Cnf.Set("Dir::Cache::archives","archives/");
  62    Cnf.Set("Dir::Cache::srcpkgcache","srcpkgcache.bin");
  63    Cnf.Set("Dir::Cache::pkgcache","pkgcache.bin");
  64
  65    // Configuration
  66    Cnf.Set("Dir::Etc","etc/apt/");
  67    Cnf.Set("Dir::Etc::sourcelist","sources.list");
  68    Cnf.Set("Dir::Etc::sourceparts","sources.list.d");
  69    Cnf.Set("Dir::Etc::vendorlist","vendors.list");
  70    Cnf.Set("Dir::Etc::vendorparts","vendors.list.d");
  71    Cnf.Set("Dir::Etc::main","apt.conf");
  72    Cnf.Set("Dir::Etc::parts","apt.conf.d");
  73    Cnf.Set("Dir::Etc::preferences","preferences");
  74    Cnf.Set("Dir::Bin::methods","/usr/lib/apt/methods");
  75
  76    bool Res = true;
  77
  78    // Read an alternate config file
  79    const char *Cfg = getenv("APT_CONFIG");
  80    if (Cfg != 0 && FileExists(Cfg) == true)
  81       Res &= ReadConfigFile(Cnf,Cfg);
  82
  83    // Read the configuration parts dir
  84    string Parts = Cnf.FindDir("Dir::Etc::parts");
  85    if (FileExists(Parts) == true)
  86       Res &= ReadConfigDir(Cnf,Parts);
  87
  88    // Read the main config file
  89    string FName = Cnf.FindFile("Dir::Etc::main");
  90    if (FileExists(FName) == true)
  91       Res &= ReadConfigFile(Cnf,FName);
  92
  93    if (Res == false)
  94       return false;
  95
  96    if (Cnf.FindB("Debug::pkgInitConfig",false) == true)
  97       Cnf.Dump();
  98
  99 #ifdef APT_DOMAIN
 100    if (Cnf.Exists("Dir::Locale"))
 101    {
 102       bindtextdomain(APT_DOMAIN,Cnf.FindDir("Dir::Locale").c_str());
 103       bindtextdomain(textdomain(0),Cnf.FindDir("Dir::Locale").c_str());
 104    }
 105 #endif
 106
 107    return true;
 108 }
 109                                                                         /*}}}*/
 110 // pkgInitSystem - Initialize the _system calss                         /*{{{*/
 111 // ---------------------------------------------------------------------
 112 /* */
 113 bool pkgInitSystem(Configuration &Cnf,pkgSystem *&Sys)
 114 {
 115    Sys = 0;
 116    string Label = Cnf.Find("Apt::System","");
 117    if (Label.empty() == false)
 118    {
 119       Sys = pkgSystem::GetSystem(Label.c_str());
 120       if (Sys == 0)
 121          return _error->Error(_("Packaging system '%s' is not supported"),Label.c_str());
 122    }
 123    else
 124    {
 125       signed MaxScore = 0;
 126       for (unsigned I = 0; I != pkgSystem::GlobalListLen; I++)
 127       {
 128          signed Score = pkgSystem::GlobalList[I]->Score(Cnf);
 129          if (Score > MaxScore)
 130          {
 131             MaxScore = Score;
 132             Sys = pkgSystem::GlobalList[I];
 133          }
 134       }
 135
 136       if (Sys == 0)
 137          return _error->Error(_("Unable to determine a suitable packaging system type"));
 138    }
 139
 140    return Sys->Initialize(Cnf);
 141 }
 142                                                                         /*}}}*/