cmdline/apt-helper.cc

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 /* #####################################################################
   4    apt-helper - cmdline helpers
   5    ##################################################################### */
   6                                                                         /*}}}*/
   7 // Include Files                                                        /*{{{*/
   8 #include <config.h>
   9
  10 #include <apt-pkg/cmndline.h>
  11 #include <apt-pkg/error.h>
  12 #include <apt-pkg/init.h>
  13 #include <apt-pkg/strutl.h>
  14 #include <apt-pkg/pkgsystem.h>
  15 #include <apt-pkg/fileutl.h>
  16 #include <apt-pkg/acquire.h>
  17 #include <apt-pkg/acquire-item.h>
  18
  19 #include <apt-private/acqprogress.h>
  20 #include <apt-private/private-output.h>
  21 #include <apt-private/private-cmndline.h>
  22
  23 #include <errno.h>
  24 #include <unistd.h>
  25 #include <sys/types.h>
  26 #include <sys/stat.h>
  27 #include <sys/wait.h>
  28 #include <fcntl.h>
  29
  30
  31
  32 #include <apti18n.h>
  33                                                                         /*}}}*/
  34 using namespace std;
  35
  36 bool DoDownloadFile(CommandLine &CmdL)
  37 {
  38    if (CmdL.FileSize() <= 2)
  39       return _error->Error(_("Must specify at least one pair url/filename"));
  40
  41
  42    pkgAcquire Fetcher;
  43    AcqTextStatus Stat(ScreenWidth, _config->FindI("quiet",0));
  44    Fetcher.Setup(&Stat);
  45    std::string download_uri = CmdL.FileList[1];
  46    std::string targetfile = CmdL.FileList[2];
  47    HashString hash;
  48    if (CmdL.FileSize() > 3)
  49       hash = HashString(CmdL.FileList[3]);
  50    new pkgAcqFile(&Fetcher, download_uri, "", 0, "desc", "short-desc",
  51                   "dest-dir-ignored", targetfile);
  52    Fetcher.Run();
  53    if (!FileExists(targetfile))
  54    {
  55       _error->Error(_("Download Failed"));
  56       return false;
  57    }
  58    if(hash.empty() == false)
  59    {
  60       if(hash.VerifyFile(targetfile) == false)
  61       {
  62          _error->Error(_("HashSum Failed"));
  63          Rename(targetfile, targetfile+".failed");
  64          return false;
  65       }
  66    }
  67    return true;
  68 }
  69
  70 bool ShowHelp(CommandLine &CmdL)
  71 {
  72    ioprintf(cout,_("%s %s for %s compiled on %s %s\n"),PACKAGE,PACKAGE_VERSION,
  73             COMMON_ARCH,__DATE__,__TIME__);
  74
  75    if (_config->FindB("version") == true)
  76      return true;
  77
  78    cout <<
  79     _("Usage: apt-helper [options] command\n"
  80       "       apt-helper [options] download-file uri target-path\n"
  81       "\n"
  82       "apt-helper is a internal helper for apt\n"
  83       "\n"
  84       "Commands:\n"
  85       "   download-file - download the given uri to the target-path\n"
  86       "\n"
  87       "                       This APT helper has Super Meep Powers.\n");
  88    return true;
  89 }
  90
  91
  92 int main(int argc,const char *argv[])                                   /*{{{*/
  93 {
  94    CommandLine::Dispatch Cmds[] = {{"help",&ShowHelp},
  95                                    {"download-file", &DoDownloadFile},
  96                                    {0,0}};
  97
  98    std::vector<CommandLine::Args> Args = getCommandArgs(
  99       "apt-download", CommandLine::GetCommand(Cmds, argc, argv));
 100
 101    // Set up gettext support
 102    setlocale(LC_ALL,"");
 103    textdomain(PACKAGE);
 104
 105    // Parse the command line and initialize the package library
 106    CommandLine CmdL(Args.data(),_config);
 107    if (pkgInitConfig(*_config) == false ||
 108        CmdL.Parse(argc,argv) == false ||
 109        pkgInitSystem(*_config,_system) == false)
 110    {
 111       if (_config->FindB("version") == true)
 112          ShowHelp(CmdL);
 113       _error->DumpErrors();
 114       return 100;
 115    }
 116
 117    // See if the help should be shown
 118    if (_config->FindB("help") == true ||
 119        _config->FindB("version") == true ||
 120        CmdL.FileSize() == 0)
 121    {
 122       ShowHelp(CmdL);
 123       return 0;
 124    }
 125
 126    InitOutput();
 127
 128    // Match the operation
 129    CmdL.DispatchArg(Cmds);
 130
 131    // Print any errors or warnings found during parsing
 132    bool const Errors = _error->PendingError();
 133    if (_config->FindI("quiet",0) > 0)
 134       _error->DumpErrors();
 135    else
 136       _error->DumpErrors(GlobalError::DEBUG);
 137    return Errors == true ? 100 : 0;
 138 }
 139                                                                         /*}}}*/