apt-helper: Check that we can open stdout

[apt.git] / cmdline / apt-helper.cc

diff --git a/cmdline/apt-helper.cc b/cmdline/apt-helper.cc
index aeeccf06d7a140563026c5ec34f2939cc7d5c2d6..a519f3042be72527ed4e3c0eda8f5dced3b85fc7 100644 (file)
--- a/cmdline/apt-helper.cc
+++ b/cmdline/apt-helper.cc
@@ -16,135 +16,161 @@
 #include <apt-pkg/fileutl.h>
 #include <apt-pkg/acquire.h>
 #include <apt-pkg/acquire-item.h>
 #include <apt-pkg/fileutl.h>
 #include <apt-pkg/acquire.h>
 #include <apt-pkg/acquire-item.h>

+#include <apt-pkg/proxy.h>

 
 #include <apt-private/acqprogress.h>
 #include <apt-private/private-output.h>
 #include <apt-private/private-download.h>
 #include <apt-private/private-cmndline.h>
 
 #include <apt-private/acqprogress.h>
 #include <apt-private/private-output.h>
 #include <apt-private/private-download.h>
 #include <apt-private/private-cmndline.h>

+#include <apt-private/private-main.h>

 #include <apt-pkg/srvrec.h>
 
 #include <iostream>
 #include <string>
 #include <vector>
 
 #include <apt-pkg/srvrec.h>
 
 #include <iostream>
 #include <string>
 #include <vector>
 

+#include <stdlib.h>
+

 #include <apti18n.h>
                                                                        /*}}}*/
 
 #include <apti18n.h>
                                                                        /*}}}*/
 

-static bool DoDownloadFile(CommandLine &CmdL)
+static bool DoAutoDetectProxy(CommandLine &CmdL)                       /*{{{*/
+{
+   if (CmdL.FileSize() != 2)
+      return _error->Error(_("Need one URL as argument"));
+   URI ServerURL(CmdL.FileList[1]);
+   AutoDetectProxy(ServerURL);
+   std::string SpecificProxy = _config->Find("Acquire::"+ServerURL.Access+"::Proxy::" + ServerURL.Host);
+   ioprintf(std::cout, "Using proxy '%s' for URL '%s'\n",
+            SpecificProxy.c_str(), std::string(ServerURL).c_str());
+
+   return true;
+}
+                                                                       /*}}}*/
+static bool DoDownloadFile(CommandLine &CmdL)                          /*{{{*/

 {
    if (CmdL.FileSize() <= 2)
       return _error->Error(_("Must specify at least one pair url/filename"));
 
 {
    if (CmdL.FileSize() <= 2)
       return _error->Error(_("Must specify at least one pair url/filename"));
 

+   aptAcquireWithTextStatus Fetcher;
+   size_t fileind = 0;
+   std::vector<std::string> targetfiles;
+   while (fileind + 2 <= CmdL.FileSize())
+   {
+      std::string download_uri = CmdL.FileList[fileind + 1];
+      std::string targetfile = CmdL.FileList[fileind + 2];
+      std::string hash;
+      if (CmdL.FileSize() > fileind + 3)
+        hash = CmdL.FileList[fileind + 3];
+      // we use download_uri as descr and targetfile as short-descr
+      new pkgAcqFile(&Fetcher, download_uri, hash, 0, download_uri, targetfile,
+           "dest-dir-ignored", targetfile);
+      targetfiles.push_back(targetfile);
+      fileind += 3;
+   }

 
 

-   pkgAcquire Fetcher;
-   AcqTextStatus Stat(ScreenWidth, _config->FindI("quiet",0));
-   Fetcher.Setup(&Stat);
-   std::string download_uri = CmdL.FileList[1];
-   std::string targetfile = CmdL.FileList[2];
-   std::string hash;
-   if (CmdL.FileSize() > 3)
-      hash = CmdL.FileList[3];
-   new pkgAcqFile(&Fetcher, download_uri, hash, 0, "desc", "short-desc", 
-                  "dest-dir-ignored", targetfile);
-   Fetcher.Run();

    bool Failed = false;
    bool Failed = false;

-   if (AcquireRun(Fetcher, 0, &Failed, NULL) == false || Failed == true ||
-        FileExists(targetfile) == false)
+   if (AcquireRun(Fetcher, 0, &Failed, NULL) == false || Failed == true)

       return _error->Error(_("Download Failed"));
       return _error->Error(_("Download Failed"));

+   if (targetfiles.empty() == false)
+      for (std::vector<std::string>::const_iterator f = targetfiles.begin(); f != targetfiles.end(); ++f)
+        if (FileExists(*f) == false)
+           return _error->Error(_("Download Failed"));
+

    return true;
 }
    return true;
 }

-
-static bool DoSrvLookup(CommandLine &CmdL)
+                                                                       /*}}}*/
+static bool DoSrvLookup(CommandLine &CmdL)                             /*{{{*/

 {
 {

-   if (CmdL.FileSize() < 1)
-      return _error->Error(_("Must specifc at least one srv record"));
-   
-   std::vector<SrvRec> srv_records;
-   for(int i=1; CmdL.FileList[i] != NULL; i++)
+   if (CmdL.FileSize() <= 1)
+      return _error->Error("Must specify at least one SRV record");
+
+   for(size_t i = 1; CmdL.FileList[i] != NULL; ++i)

    {
    {

-      if(GetSrvRecords(CmdL.FileList[i], srv_records) == false)
-         _error->Warning(_("GetSrvRec failed for %s"), CmdL.FileList[i]);
-      for (std::vector<SrvRec>::const_iterator I = srv_records.begin();
-           I != srv_records.end(); ++I)
+      std::vector<SrvRec> srv_records;
+      std::string const name = CmdL.FileList[i];
+      c0out << "# Target\tPriority\tWeight\tPort # for " << name << std::endl;
+      size_t const found = name.find(":");
+      if (found != std::string::npos)

       {
       {

-         c1out << (*I).target.c_str() << " " 
-               << (*I).priority << " " 
-               << (*I).weight << " "
-               << (*I).port << " "
-               << std::endl;
+        std::string const host = name.substr(0, found);
+        size_t const port = atoi(name.c_str() + found + 1);
+        if(GetSrvRecords(host, port, srv_records) == false)
+           _error->Error(_("GetSrvRec failed for %s"), name.c_str());

       }
       }

+      else if(GetSrvRecords(name, srv_records) == false)
+        _error->Error(_("GetSrvRec failed for %s"), name.c_str());
+
+      for (SrvRec const &I : srv_records)
+        c1out << I.target << "\t" << I.priority << "\t" << I.weight << "\t" << I.port << std::endl;

    }
    return true;
 }
    }
    return true;
 }

-
-static bool ShowHelp(CommandLine &)
+                                                                       /*}}}*/
+static bool DoCatFile(CommandLine &CmdL)                               /*{{{*/

 {
 {

-   ioprintf(std::cout,_("%s %s for %s compiled on %s %s\n"),PACKAGE,PACKAGE_VERSION,
-           COMMON_ARCH,__DATE__,__TIME__);
+   FileFd fd;
+   FileFd out;
+   char buf[4096];
+   unsigned long long read;

 
 

-   if (_config->FindB("version") == true)
-     return true;
+   if (out.OpenDescriptor(STDOUT_FILENO, FileFd::WriteOnly) == false)
+      return false;

 
 

+   if (CmdL.FileSize() <= 1)
+      return _error->Error("Must specify at least one file name");
+
+   for(size_t i = 1; CmdL.FileList[i] != NULL; ++i)
+   {
+      std::string const name = CmdL.FileList[i];
+
+      if (fd.Open(name, FileFd::ReadOnly, FileFd::Extension) == false)
+         return false;
+
+      for (;;) {
+         if (fd.Read(buf, sizeof(buf), &read) == false)
+            return false;
+         if (read == 0)
+            break;
+         if (out.Write(buf, read) == false)
+            return false;
+      }
+   }
+   return true;
+}
+                                                                       /*}}}*/
+static bool ShowHelp(CommandLine &)                                    /*{{{*/
+{

    std::cout <<
    std::cout <<

-    _("Usage: apt-helper [options] command\n"
-      "       apt-helper [options] download-file uri target-path\n"
-      "\n"
-      "apt-helper is a internal helper for apt\n"
-      "\n"
-      "Commands:\n"
-      "   download-file - download the given uri to the target-path\n"
-      "\n"
-      "                       This APT helper has Super Meep Powers.\n");
+      _("Usage: apt-helper [options] command\n"
+           "       apt-helper [options] cat-file file ...\n"
+           "       apt-helper [options] download-file uri target-path\n"
+           "\n"
+           "apt-helper bundles a variety of commands for shell scripts to use\n"
+           "e.g. the same proxy configuration or acquire system as APT would.\n");

    return true;
 }
    return true;
 }

-
-
+                                                                       /*}}}*/
+static std::vector<aptDispatchWithHelp> GetCommands()                  /*{{{*/
+{
+   return {
+      {"download-file", &DoDownloadFile, _("download the given uri to the target-path")},
+      {"srv-lookup", &DoSrvLookup, _("lookup a SRV record (e.g. _http._tcp.ftp.debian.org)")},
+      {"cat-file", &DoCatFile, _("concatenate files, with automatic decompression")},
+      {"auto-detect-proxy", &DoAutoDetectProxy, _("detect proxy using apt.conf")},
+      {nullptr, nullptr, nullptr}
+   };
+}
+                                                                       /*}}}*/

 int main(int argc,const char *argv[])                                  /*{{{*/
 {
 int main(int argc,const char *argv[])                                  /*{{{*/
 {

-   CommandLine::Dispatch Cmds[] = {{"help",&ShowHelp},
-                                  {"download-file", &DoDownloadFile},
-                                  {"srv-lookup", &DoSrvLookup},
-                                   {0,0}};
-
-   std::vector<CommandLine::Args> Args = getCommandArgs(
-      "apt-download", CommandLine::GetCommand(Cmds, argc, argv));
-
-   // Set up gettext support
-   setlocale(LC_ALL,"");
-   textdomain(PACKAGE);
-
-   // Parse the command line and initialize the package library
-   CommandLine CmdL(Args.data(),_config);
-   if (pkgInitConfig(*_config) == false ||
-       CmdL.Parse(argc,argv) == false ||
-       pkgInitSystem(*_config,_system) == false)
-   {
-      if (_config->FindB("version") == true)
-        ShowHelp(CmdL);
-      _error->DumpErrors();
-      return 100;
-   }
+   InitLocale();

 
 

-   // See if the help should be shown
-   if (_config->FindB("help") == true ||
-       _config->FindB("version") == true ||
-       CmdL.FileSize() == 0)
-   {
-      ShowHelp(CmdL);
-      return 0;
-   }
+   CommandLine CmdL;
+   auto const Cmds = ParseCommandLine(CmdL, APT_CMD::APT_HELPER, &_config, &_system, argc, argv, &ShowHelp, &GetCommands);

 
    InitOutput();
 
 
    InitOutput();
 

-   // Match the operation
-   CmdL.DispatchArg(Cmds);
-
-   // Print any errors or warnings found during parsing
-   bool const Errors = _error->PendingError();
-   if (_config->FindI("quiet",0) > 0)
-      _error->DumpErrors();
-   else
-      _error->DumpErrors(GlobalError::DEBUG);
-   return Errors == true ? 100 : 0;
+   return DispatchCommandLine(CmdL, Cmds);

 }
                                                                        /*}}}*/
 }
                                                                        /*}}}*/