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    AcqTextStatus Stat(std::cout, ScreenWidth,_config->FindI("quiet",0));
  52    pkgAcquire Fetcher(&Stat);
  53
  54    size_t fileind = 0;
  55    std::vector<std::string> targetfiles;
  56    while (fileind + 2 <= CmdL.FileSize())
  57    {
  58       std::string download_uri = CmdL.FileList[fileind + 1];
  59       std::string targetfile = CmdL.FileList[fileind + 2];
  60       std::string hash;
  61       if (CmdL.FileSize() > fileind + 3)
  62          hash = CmdL.FileList[fileind + 3];
  63       // we use download_uri as descr and targetfile as short-descr
  64       new pkgAcqFile(&Fetcher, download_uri, hash, 0, download_uri, targetfile,
  65             "dest-dir-ignored", targetfile);
  66       targetfiles.push_back(targetfile);
  67       fileind += 3;
  68    }
  69
  70    // Disable drop-privs if "_apt" can not write to the target dir
  71    CheckDropPrivsMustBeDisabled(Fetcher);
  72
  73    bool Failed = false;
  74    if (AcquireRun(Fetcher, 0, &Failed, NULL) == false || Failed == true)
  75       return _error->Error(_("Download Failed"));
  76    if (targetfiles.empty() == false)
  77       for (std::vector<std::string>::const_iterator f = targetfiles.begin(); f != targetfiles.end(); ++f)
  78          if (FileExists(*f) == false)
  79             return _error->Error(_("Download Failed"));
  80
  81    return true;
  82 }
  83
  84 static bool ShowHelp(CommandLine &)
  85 {
  86    ioprintf(std::cout, "%s %s (%s)\n", PACKAGE, PACKAGE_VERSION, COMMON_ARCH);
  87
  88    if (_config->FindB("version") == true)
  89      return true;
  90
  91    std::cout <<
  92     _("Usage: apt-helper [options] command\n"
  93       "       apt-helper [options] download-file uri target-path\n"
  94       "\n"
  95       "apt-helper is a internal helper for apt\n"
  96       "\n"
  97       "Commands:\n"
  98       "   download-file - download the given uri to the target-path\n"
  99       "   auto-detect-proxy - detect proxy using apt.conf\n"
 100       "\n"
 101       "                       This APT helper has Super Meep Powers.\n");
 102    return true;
 103 }
 104
 105
 106 int main(int argc,const char *argv[])                                   /*{{{*/
 107 {
 108    CommandLine::Dispatch Cmds[] = {{"help",&ShowHelp},
 109                                    {"download-file", &DoDownloadFile},
 110                                    {"auto-detect-proxy", &DoAutoDetectProxy},
 111                                    {0,0}};
 112
 113    std::vector<CommandLine::Args> Args = getCommandArgs(
 114       "apt-download", CommandLine::GetCommand(Cmds, argc, argv));
 115
 116    // Set up gettext support
 117    setlocale(LC_ALL,"");
 118    textdomain(PACKAGE);
 119
 120    // Parse the command line and initialize the package library
 121    CommandLine CmdL;
 122    ParseCommandLine(CmdL, Cmds, Args.data(), &_config, &_system, argc, argv, ShowHelp);
 123
 124    InitOutput();
 125
 126    // Match the operation
 127    CmdL.DispatchArg(Cmds);
 128
 129    // Print any errors or warnings found during parsing
 130    bool const Errors = _error->PendingError();
 131    if (_config->FindI("quiet",0) > 0)
 132       _error->DumpErrors();
 133    else
 134       _error->DumpErrors(GlobalError::DEBUG);
 135    return Errors == true ? 100 : 0;
 136 }
 137                                                                         /*}}}*/