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Adding upstream version 0.17.

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Signed-off-by: Daniel Baumann <daniel@debian.org>
This commit is contained in:
Daniel Baumann 2025-02-17 21:15:00 +01:00
parent bb26c2917c
commit 739f200278
Signed by: daniel
GPG key ID: FBB4F0E80A80222F
29 changed files with 2935 additions and 2272 deletions
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109
lzip_index.cc
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@ -1,25 +1,25 @@
/* Tarlz - Archiver with multimember lzip compression
Copyright (C) 2013-2019 Antonio Diaz Diaz.
/* Tarlz - Archiver with multimember lzip compression
Copyright (C) 2013-2020 Antonio Diaz Diaz.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define _FILE_OFFSET_BITS 64
#include <algorithm>
#include <cerrno>
#include <climits>
#include <climits> // for tarlz.h
#include <cstdio>
#include <cstring>
#include <string>
@ -28,8 +28,8 @@
#include <stdint.h>
#include <unistd.h>
#include "lzip_index.h"
#include "tarlz.h"
#include "lzip_index.h"
int seek_read( const int fd, uint8_t * const buf, const int size,
@ -53,6 +53,19 @@ const char * bad_version( const unsigned version )
} // end namespace
bool Lzip_index::check_header_error( const Lzip_header & header,
const bool first )
{
if( !header.verify_magic() )
{ error_ = bad_magic_msg; retval_ = 2; if( first ) bad_magic_ = true;
return true; }
if( !header.verify_version() )
{ error_ = bad_version( header.version() ); retval_ = 2; return true; }
if( !isvalid_ds( header.dictionary_size() ) )
{ error_ = bad_dict_msg; retval_ = 2; return true; }
return false;
}
void Lzip_index::set_errno_error( const char * const msg )
{
error_ = msg; error_ += std::strerror( errno );
@ -68,14 +81,24 @@ void Lzip_index::set_num_error( const char * const msg, unsigned long long num )
}
bool Lzip_index::read_header( const int fd, Lzip_header & header,
const long long pos )
{
if( seek_read( fd, header.data, Lzip_header::size, pos ) != Lzip_header::size )
{ set_errno_error( "Error reading member header: " ); return false; }
return true;
}
// If successful, push last member and set pos to member header.
bool Lzip_index::skip_trailing_data( const int fd, unsigned long long & pos,
const bool ignore_trailing, const bool loose_trailing )
const bool ignore_trailing,
const bool loose_trailing )
{
if( pos < min_member_size ) return false;
enum { block_size = 16384,
buffer_size = block_size + Lzip_trailer::size - 1 + Lzip_header::size };
uint8_t buffer[buffer_size];
if( pos < min_member_size ) return false;
int bsize = pos % block_size; // total bytes in buffer
if( bsize <= buffer_size - block_size ) bsize += block_size;
int search_size = bsize; // bytes to search for trailer
@ -98,26 +121,30 @@ bool Lzip_index::skip_trailing_data( const int fd, unsigned long long & pos,
if( member_size > ipos + i || !trailer.verify_consistency() )
continue;
Lzip_header header;
if( seek_read( fd, header.data, Lzip_header::size,
ipos + i - member_size ) != Lzip_header::size )
{ set_errno_error( "Error reading member header: " ); return false; }
const unsigned dictionary_size = header.dictionary_size();
if( !header.verify_magic() || !header.verify_version() ||
!isvalid_ds( dictionary_size ) ) continue;
if( (*(const Lzip_header *)( buffer + i )).verify_prefix( bsize - i ) )
{ error_ = "Last member in input file is truncated or corrupt.";
retval_ = 2; return false; }
if( !loose_trailing && bsize - i >= Lzip_header::size &&
(*(const Lzip_header *)( buffer + i )).verify_corrupt() )
if( !read_header( fd, header, ipos + i - member_size ) ) return false;
if( !header.verify() ) continue;
const Lzip_header & header2 = *(const Lzip_header *)( buffer + i );
const bool full_h2 = bsize - i >= Lzip_header::size;
if( header2.verify_prefix( bsize - i ) ) // last member
{
if( !full_h2 ) error_ = "Last member in input file is truncated.";
else if( !check_header_error( header2, false ) )
error_ = "Last member in input file is truncated or corrupt.";
retval_ = 2; return false;
}
if( !loose_trailing && full_h2 && header2.verify_corrupt() )
{ error_ = corrupt_mm_msg; retval_ = 2; return false; }
if( !ignore_trailing )
{ error_ = trailing_msg; retval_ = 2; return false; }
pos = ipos + i - member_size;
const unsigned dictionary_size = header.dictionary_size();
member_vector.push_back( Member( 0, trailer.data_size(), pos,
member_size, dictionary_size ) );
if( dictionary_size_ < dictionary_size )
dictionary_size_ = dictionary_size;
return true;
}
if( ipos <= 0 )
if( ipos == 0 )
{ set_num_error( "Bad trailer at pos ", pos - Lzip_trailer::size );
return false; }
bsize = buffer_size;
@ -131,7 +158,8 @@ bool Lzip_index::skip_trailing_data( const int fd, unsigned long long & pos,
Lzip_index::Lzip_index( const int infd, const bool ignore_trailing,
const bool loose_trailing )
: insize( lseek( infd, 0, SEEK_END ) ), retval_( 0 )
: insize( lseek( infd, 0, SEEK_END ) ), retval_( 0 ), dictionary_size_( 0 ),
bad_magic_( false )
{
if( insize < 0 )
{ set_errno_error( "Input file is not seekable: " ); return; }
@ -142,14 +170,8 @@ Lzip_index::Lzip_index( const int infd, const bool ignore_trailing,
retval_ = 2; return; }
Lzip_header header;
if( seek_read( infd, header.data, Lzip_header::size, 0 ) != Lzip_header::size )
{ set_errno_error( "Error reading member header: " ); return; }
if( !header.verify_magic() )
{ error_ = bad_magic_msg; retval_ = 2; return; }
if( !header.verify_version() )
{ error_ = bad_version( header.version() ); retval_ = 2; return; }
if( !isvalid_ds( header.dictionary_size() ) )
{ error_ = bad_dict_msg; retval_ = 2; return; }
if( !read_header( infd, header, 0 ) ) return;
if( check_header_error( header, true ) ) return;
unsigned long long pos = insize; // always points to a header or to EOF
while( pos >= min_member_size )
@ -159,7 +181,7 @@ Lzip_index::Lzip_index( const int infd, const bool ignore_trailing,
pos - Lzip_trailer::size ) != Lzip_trailer::size )
{ set_errno_error( "Error reading member trailer: " ); break; }
const unsigned long long member_size = trailer.member_size();
if( member_size > pos || !trailer.verify_consistency() )
if( member_size > pos || !trailer.verify_consistency() ) // bad trailer
{
if( member_vector.empty() )
{ if( skip_trailing_data( infd, pos, ignore_trailing, loose_trailing ) )
@ -167,12 +189,8 @@ Lzip_index::Lzip_index( const int infd, const bool ignore_trailing,
set_num_error( "Bad trailer at pos ", pos - Lzip_trailer::size );
break;
}
if( seek_read( infd, header.data, Lzip_header::size,
pos - member_size ) != Lzip_header::size )
{ set_errno_error( "Error reading member header: " ); break; }
const unsigned dictionary_size = header.dictionary_size();
if( !header.verify_magic() || !header.verify_version() ||
!isvalid_ds( dictionary_size ) )
if( !read_header( infd, header, pos - member_size ) ) break;
if( !header.verify() ) // bad header
{
if( member_vector.empty() )
{ if( skip_trailing_data( infd, pos, ignore_trailing, loose_trailing ) )
@ -181,8 +199,11 @@ Lzip_index::Lzip_index( const int infd, const bool ignore_trailing,
break;
}
pos -= member_size;
const unsigned dictionary_size = header.dictionary_size();
member_vector.push_back( Member( 0, trailer.data_size(), pos,
member_size, dictionary_size ) );
if( dictionary_size_ < dictionary_size )
dictionary_size_ = dictionary_size;
}
if( pos != 0 || member_vector.empty() )
{