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diff --git a/apt-inst/deb/debfile.cc b/apt-inst/deb/debfile.cc
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-// -*- mode: cpp; mode: fold -*-
-// Description /*{{{*/
-/* ######################################################################
-
- Debian Archive File (.deb)
-
- .DEB archives are AR files containing two tars and an empty marker
- member called 'debian-binary'. The two tars contain the meta data and
- the actual archive contents. Thus this class is a very simple wrapper
- around ar/tar to simply extract the right tar files.
-
- It also uses the deb package list parser to parse the control file
- into the cache.
-
- ##################################################################### */
- /*}}}*/
-// Include Files /*{{{*/
-#include <config.h>
-
-#include <apt-pkg/aptconfiguration.h>
-#include <apt-pkg/arfile.h>
-#include <apt-pkg/debfile.h>
-#include <apt-pkg/dirstream.h>
-#include <apt-pkg/error.h>
-#include <apt-pkg/extracttar.h>
-#include <apt-pkg/fileutl.h>
-#include <apt-pkg/tagfile.h>
-
-#include <string>
-#include <vector>
-#include <string.h>
-#include <sys/stat.h>
-
-#include <apti18n.h>
- /*}}}*/
-
-// DebFile::debDebFile - Constructor /*{{{*/
-// ---------------------------------------------------------------------
-/* Open the AR file and check for consistency */
-debDebFile::debDebFile(FileFd &File) : File(File), AR(File)
-{
- if (_error->PendingError() == true)
- return;
-
- if (!CheckMember("debian-binary")) {
- _error->Error(_("This is not a valid DEB archive, missing '%s' member"), "debian-binary");
- return;
- }
-
- if (!CheckMember("control.tar") &&
- !CheckMember("control.tar.gz") &&
- !CheckMember("control.tar.xz") &&
- !CheckMember("control.tar.zst"))
- {
- _error->Error(_("This is not a valid DEB archive, missing '%s' member"), "control.tar");
- return;
- }
-
- if (!CheckMember("data.tar") &&
- !CheckMember("data.tar.gz") &&
- !CheckMember("data.tar.bz2") &&
- !CheckMember("data.tar.lzma") &&
- !CheckMember("data.tar.xz") &&
- !CheckMember("data.tar.zst"))
- {
- _error->Error(_("This is not a valid DEB archive, missing '%s' member"), "data.tar");
- return;
- }
-}
- /*}}}*/
-// DebFile::CheckMember - Check if a named member is in the archive /*{{{*/
-// ---------------------------------------------------------------------
-/* This is used to check for a correct deb and to give nicer error messages
- for people playing around. */
-bool debDebFile::CheckMember(const char *Name)
-{
- if (AR.FindMember(Name) == 0)
- return false;
- return true;
-}
- /*}}}*/
-// DebFile::GotoMember - Jump to a Member /*{{{*/
-// ---------------------------------------------------------------------
-/* Jump in the file to the start of a named member and return the information
- about that member. The caller can then read from the file up to the
- returned size. Note, since this relies on the file position this is
- a destructive operation, it also changes the last returned Member
- structure - so don't nest them! */
-const ARArchive::Member *debDebFile::GotoMember(const char *Name)
-{
- // Get the archive member and positition the file
- const ARArchive::Member *Member = AR.FindMember(Name);
- if (Member == 0)
- {
- return 0;
- }
- if (File.Seek(Member->Start) == false)
- return 0;
-
- return Member;
-}
- /*}}}*/
-// DebFile::ExtractTarMember - Extract the contents of a tar member /*{{{*/
-// ---------------------------------------------------------------------
-/* Simple wrapper around tar.. */
-bool debDebFile::ExtractTarMember(pkgDirStream &Stream,const char *Name)
-{
- // Get the archive member
- const ARArchive::Member *Member = NULL;
- std::string Compressor;
-
- std::vector<APT::Configuration::Compressor> compressor = APT::Configuration::getCompressors();
- for (std::vector<APT::Configuration::Compressor>::const_iterator c = compressor.begin();
- c != compressor.end(); ++c)
- {
- Member = AR.FindMember(std::string(Name).append(c->Extension).c_str());
- if (Member == NULL)
- continue;
- Compressor = c->Name;
- break;
- }
-
- if (Member == NULL)
- Member = AR.FindMember(std::string(Name).c_str());
-
- if (Member == NULL)
- {
- std::string ext = std::string(Name) + ".{";
- for (std::vector<APT::Configuration::Compressor>::const_iterator c = compressor.begin();
- c != compressor.end(); ++c) {
- if (!c->Extension.empty())
- ext.append(c->Extension.substr(1));
- }
- ext.append("}");
- return _error->Error(_("Internal error, could not locate member %s"), ext.c_str());
- }
-
- if (File.Seek(Member->Start) == false)
- return false;
-
- // Prepare Tar
- ExtractTar Tar(File,Member->Size,Compressor);
- if (_error->PendingError() == true)
- return false;
- return Tar.Go(Stream);
-}
- /*}}}*/
-// DebFile::ExtractArchive - Extract the archive data itself /*{{{*/
-// ---------------------------------------------------------------------
-/* Simple wrapper around DebFile::ExtractTarMember. */
-bool debDebFile::ExtractArchive(pkgDirStream &Stream)
-{
- return ExtractTarMember(Stream, "data.tar");
-}
- /*}}}*/
-
-// DebFile::ControlExtract::DoItem - Control Tar Extraction /*{{{*/
-// ---------------------------------------------------------------------
-/* This directory stream handler for the control tar handles extracting
- it into the temporary meta directory. It only extracts files, it does
- not create directories, links or anything else. */
-bool debDebFile::ControlExtract::DoItem(Item &Itm,int &Fd)
-{
- if (Itm.Type != Item::File)
- return true;
-
- /* Cleanse the file name, prevent people from trying to unpack into
- absolute paths, .., etc */
- for (char *I = Itm.Name; *I != 0; I++)
- if (*I == '/')
- *I = '_';
-
- /* Force the ownership to be root and ensure correct permissions,
- go-w, the rest are left untouched */
- Itm.UID = 0;
- Itm.GID = 0;
- Itm.Mode &= ~(S_IWGRP | S_IWOTH);
-
- return pkgDirStream::DoItem(Itm,Fd);
-}
- /*}}}*/
-
-// MemControlExtract::DoItem - Check if it is the control file /*{{{*/
-// ---------------------------------------------------------------------
-/* This sets up to extract the control block member file into a memory
- block of just the right size. All other files go into the bit bucket. */
-bool debDebFile::MemControlExtract::DoItem(Item &Itm,int &Fd)
-{
- // At the control file, allocate buffer memory.
- if (Member == Itm.Name)
- {
- delete [] Control;
- Control = new char[Itm.Size+2];
- IsControl = true;
- Fd = -2; // Signal to pass to Process
- Length = Itm.Size;
- }
- else
- IsControl = false;
-
- return true;
-}
- /*}}}*/
-// MemControlExtract::Process - Process extracting the control file /*{{{*/
-// ---------------------------------------------------------------------
-/* Just memcopy the block from the tar extractor and put it in the right
- place in the pre-allocated memory block. */
-bool debDebFile::MemControlExtract::Process(Item &/*Itm*/,const unsigned char *Data,
- unsigned long long Size,unsigned long long Pos)
-{
- memcpy(Control + Pos, Data,Size);
- return true;
-}
- /*}}}*/
-// MemControlExtract::Read - Read the control information from the deb /*{{{*/
-// ---------------------------------------------------------------------
-/* This uses the internal tar extractor to fetch the control file, and then
- it parses it into a tag section parser. */
-bool debDebFile::MemControlExtract::Read(debDebFile &Deb)
-{
- if (Deb.ExtractTarMember(*this, "control.tar") == false)
- return false;
-
- if (Control == 0)
- return true;
-
- Control[Length] = '\n';
- Control[Length+1] = '\n';
- if (Section.Scan(Control,Length+2) == false)
- return _error->Error(_("Unparsable control file"));
- return true;
-}
- /*}}}*/
-// MemControlExtract::TakeControl - Parse a memory block /*{{{*/
-// ---------------------------------------------------------------------
-/* The given memory block is loaded into the parser and parsed as a control
- record. */
-bool debDebFile::MemControlExtract::TakeControl(const void *Data,unsigned long long Size)
-{
- delete [] Control;
- Control = new char[Size+2];
- Length = Size;
- memcpy(Control,Data,Size);
-
- Control[Length] = '\n';
- Control[Length+1] = '\n';
- return Section.Scan(Control,Length+2);
-}
- /*}}}*/
-
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