Adding upstream version 1.18.upstream/1.18

Signed-off-by: Daniel Baumann <mail@daniel-baumann.ch>

1 files changed, 23 insertions, 21 deletions

diff --git a/mtester.cc b/mtester.cc
index 92de2e0..22fd67d 100644
--- a/mtester.cc
+++ b/mtester.cc
@@ -1,5 +1,5 @@
 /*  Lziprecover - Data recovery tool for the lzip format
-    Copyright (C) 2009-2015 Antonio Diaz Diaz.
+    Copyright (C) 2009-2016 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
@@ -56,7 +56,10 @@ void LZ_mtester::flush_data()
     {
     const int size = pos - stream_pos;
     crc32.update_buf( crc_, buffer + stream_pos, size );
-    if( pos >= dictionary_size ) { partial_data_pos += pos; pos = 0; }
+    if( outfd >= 0 && writeblock( outfd, buffer + stream_pos, size ) != size )
+      throw Error( "Write error" );
+    if( pos >= dictionary_size )
+      { partial_data_pos += pos; pos = 0; pos_wrapped = true; }
     stream_pos = pos;
     }
   }
@@ -64,13 +67,12 @@ void LZ_mtester::flush_data()
 
 bool LZ_mtester::verify_trailer()
   {
-  const File_trailer * trailer = rdec.get_trailer();
+  const File_trailer * const trailer = rdec.get_trailer();
   if( !trailer ) return false;
 
-  return ( rdec.code_is_zero() &&
-           trailer->data_crc() == crc() &&
+  return ( trailer->data_crc() == crc() &&
            trailer->data_size() == data_position() &&
-           trailer->member_size() == (unsigned long)member_position() );
+           trailer->member_size() == member_position() );
   }
 
 
@@ -101,7 +103,7 @@ void LZ_mtester::duplicate_buffer()
 /* Return value: 0 = OK, 1 = decoder error, 2 = unexpected EOF,
                  3 = trailer error, 4 = unknown marker found,
                  -1 = pos_limit reached. */
-int LZ_mtester::test_member( const long pos_limit )
+int LZ_mtester::test_member( const unsigned long pos_limit )
   {
   if( pos_limit < File_header::size + 5 ) return -1;
   if( member_position() == File_header::size ) rdec.load();
@@ -181,11 +183,12 @@ int LZ_mtester::test_member( const long pos_limit )
                 }
               return 4;
               }
+            if( rep0 > max_rep0 ) max_rep0 = rep0;
             }
           }
         rep3 = rep2; rep2 = rep1; rep1 = rep0_saved;
         state.set_match();
-        if( rep0 >= dictionary_size || rep0 >= data_position() )
+        if( rep0 >= dictionary_size || ( rep0 >= pos && !pos_wrapped ) )
           { flush_data(); return 1; }
         }
       copy_block( rep0, len );
@@ -304,8 +307,13 @@ int LZ_mtester::debug_decode_member( const long long dpos, const long long mpos,
                 if( show_packets ) std::fputs( "trailer error\n", stdout );
                 return 3;
                 }
+              if( len == min_match_len + 1 )	// Sync Flush marker
+                {
+                rdec.load(); continue;
+                }
               return 4;
               }
+            if( rep0 > max_rep0 ) max_rep0 = rep0;
             }
           }
         rep3 = rep2; rep2 = rep1; rep1 = rep0_saved;
@@ -313,7 +321,7 @@ int LZ_mtester::debug_decode_member( const long long dpos, const long long mpos,
         if( show_packets )
           std::printf( "%6llu %6llu  match %6u,%3d (%6lld)",
                        mp, dp, rep0 + 1, len, dp - rep0 - 1 );
-        if( rep0 >= dictionary_size || rep0 >= data_position() )
+        if( rep0 >= dictionary_size || ( rep0 >= pos && !pos_wrapped ) )
           { flush_data(); if( show_packets ) std::fputc( '\n', stdout );
             return 1; }
         }
@@ -343,19 +351,13 @@ uint8_t * read_member( const int infd, const long long mpos,
 
 const LZ_mtester * prepare_master( const uint8_t * const buffer,
                                    const long buffer_size,
-                                   const long pos_limit )
+                                   const unsigned long pos_limit,
+                                   const unsigned dictionary_size )
   {
-  const File_header & header = *(File_header *)buffer;
-  const unsigned dictionary_size = header.dictionary_size();
-  if( header.verify_magic() && header.verify_version() &&
-      dictionary_size >= min_dictionary_size &&
-      dictionary_size <= max_dictionary_size )
-    {
-    LZ_mtester * const master =
-      new LZ_mtester( buffer, buffer_size, dictionary_size );
-    if( master->test_member( pos_limit ) == -1 ) return master;
-    delete master;
-    }
+  LZ_mtester * const master =
+    new LZ_mtester( buffer, buffer_size, dictionary_size );
+  if( master->test_member( pos_limit ) == -1 ) return master;
+  delete master;
   return 0;
   }