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/configuration.h>
  11 #include <apt-pkg/cmndline.h>
  12 #include <apt-pkg/error.h>
  13 #include <apt-pkg/init.h>
  14 #include <apt-pkg/strutl.h>
  15 #include <apt-pkg/pkgsystem.h>
  16 #include <apt-pkg/fileutl.h>
  17 #include <apt-pkg/acquire.h>
  18 #include <apt-pkg/acquire-item.h>
  19 #include <apt-pkg/proxy.h>
  20
  21 #include <apt-private/acqprogress.h>
  22 #include <apt-private/private-output.h>
  23 #include <apt-private/private-download.h>
  24 #include <apt-private/private-cmndline.h>
  25
  26 #include <iostream>
  27 #include <string>
  28 #include <vector>
  29
  30 #include <apti18n.h>
  31                                                                         /*}}}*/
  32
  33 static bool DoAutoDetectProxy(CommandLine &CmdL)
  34 {
  35    if (CmdL.FileSize() != 2)
  36       return _error->Error(_("Need one URL as argument"));
  37    URI ServerURL(CmdL.FileList[1]);
  38    AutoDetectProxy(ServerURL);
  39    std::string SpecificProxy = _config->Find("Acquire::"+ServerURL.Access+"::Proxy::" + ServerURL.Host);
  40    ioprintf(std::cout, "Using proxy '%s' for URL '%s'\n",
  41             SpecificProxy.c_str(), std::string(ServerURL).c_str());
  42
  43    return true;
  44 }
  45
  46 static bool DoDownloadFile(CommandLine &CmdL)
  47 {
  48    if (CmdL.FileSize() <= 2)
  49       return _error->Error(_("Must specify at least one pair url/filename"));
  50
  51
  52    pkgAcquire Fetcher;
  53    AcqTextStatus Stat(ScreenWidth, _config->FindI("quiet",0));
  54    if (Fetcher.Setup(&Stat, "", false) == false)
  55       return false;
  56    std::string download_uri = CmdL.FileList[1];
  57    std::string targetfile = CmdL.FileList[2];
  58    std::string hash;
  59    if (CmdL.FileSize() > 3)
  60       hash = CmdL.FileList[3];
  61    // we use download_uri as descr and targetfile as short-descr
  62    new pkgAcqFile(&Fetcher, download_uri, hash, 0, download_uri, targetfile,
  63                   "dest-dir-ignored", targetfile);
  64    Fetcher.Run();
  65    bool Failed = false;
  66    if (AcquireRun(Fetcher, 0, &Failed, NULL) == false || Failed == true ||
  67          FileExists(targetfile) == false)
  68       return _error->Error(_("Download Failed"));
  69    return true;
  70 }
  71
  72 static bool ShowHelp(CommandLine &)
  73 {
  74    ioprintf(std::cout,_("%s %s for %s compiled on %s %s\n"),PACKAGE,PACKAGE_VERSION,
  75             COMMON_ARCH,__DATE__,__TIME__);
  76
  77    if (_config->FindB("version") == true)
  78      return true;
  79
  80    std::cout <<
  81     _("Usage: apt-helper [options] command\n"
  82       "       apt-helper [options] download-file uri target-path\n"
  83       "\n"
  84       "apt-helper is a internal helper for apt\n"
  85       "\n"
  86       "Commands:\n"
  87       "   download-file - download the given uri to the target-path\n"
  88       "   auto-detect-proxy - detect proxy using apt.conf\n"
  89       "\n"
  90       "                       This APT helper has Super Meep Powers.\n");
  91    return true;
  92 }
  93
  94
  95 int main(int argc,const char *argv[])                                   /*{{{*/
  96 {
  97    CommandLine::Dispatch Cmds[] = {{"help",&ShowHelp},
  98                                    {"download-file", &DoDownloadFile},
  99                                    {"auto-detect-proxy", &DoAutoDetectProxy},
 100                                    {0,0}};
 101
 102    std::vector<CommandLine::Args> Args = getCommandArgs(
 103       "apt-download", CommandLine::GetCommand(Cmds, argc, argv));
 104
 105    // Set up gettext support
 106    setlocale(LC_ALL,"");
 107    textdomain(PACKAGE);
 108
 109    // Parse the command line and initialize the package library
 110    CommandLine CmdL(Args.data(),_config);
 111    if (pkgInitConfig(*_config) == false ||
 112        CmdL.Parse(argc,argv) == false ||
 113        pkgInitSystem(*_config,_system) == false)
 114    {
 115       if (_config->FindB("version") == true)
 116          ShowHelp(CmdL);
 117       _error->DumpErrors();
 118       return 100;
 119    }
 120
 121    // See if the help should be shown
 122    if (_config->FindB("help") == true ||
 123        _config->FindB("version") == true ||
 124        CmdL.FileSize() == 0)
 125    {
 126       ShowHelp(CmdL);
 127       return 0;
 128    }
 129
 130    InitOutput();
 131
 132    // Match the operation
 133    CmdL.DispatchArg(Cmds);
 134
 135    // Print any errors or warnings found during parsing
 136    bool const Errors = _error->PendingError();
 137    if (_config->FindI("quiet",0) > 0)
 138       _error->DumpErrors();
 139    else
 140       _error->DumpErrors(GlobalError::DEBUG);
 141    return Errors == true ? 100 : 0;
 142 }
 143                                                                         /*}}}*/