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-rwxr-xr-xtestsuite/check.sh26
-rw-r--r--testsuite/unzcrash.cc353
2 files changed, 375 insertions, 4 deletions
diff --git a/testsuite/check.sh b/testsuite/check.sh
index 5b8244c..92dcfdd 100755
--- a/testsuite/check.sh
+++ b/testsuite/check.sh
@@ -1,6 +1,6 @@
#! /bin/sh
# check script for Lziprecover - Data recovery tool for lzipped files
-# Copyright (C) 2009, 2010, 2011 Antonio Diaz Diaz.
+# Copyright (C) 2009, 2010, 2011, 2012 Antonio Diaz Diaz.
#
# This script is free software: you have unlimited permission
# to copy, distribute and modify it.
@@ -9,11 +9,12 @@ LC_ALL=C
export LC_ALL
objdir=`pwd`
testdir=`cd "$1" ; pwd`
+LZIP="${objdir}"/lziprecover
LZIPRECOVER="${objdir}"/lziprecover
framework_failure() { echo "failure in testing framework" ; exit 1 ; }
-if [ ! -x "${LZIPRECOVER}" ] ; then
- echo "${LZIPRECOVER}: cannot execute"
+if [ ! -x "${LZIP}" ] ; then
+ echo "${LZIP}: cannot execute"
exit 1
fi
@@ -40,7 +41,19 @@ fail=0
printf "testing lziprecover-%s..." "$2"
-"${LZIPRECOVER}" -D 921-1921 -o copy ${in_lz} || fail=1
+"${LZIP}" -t "${testdir}"/test_v0.lz || fail=1
+printf .
+"${LZIP}" -cd "${testdir}"/test_v0.lz > copy || fail=1
+cmp ${in} copy || fail=1
+printf .
+
+"${LZIP}" -t "${testdir}"/test_v1.lz || fail=1
+printf .
+"${LZIP}" -cd "${testdir}"/test_v1.lz > copy || fail=1
+cmp ${in} copy || fail=1
+printf .
+
+"${LZIPRECOVER}" -D 921-1921 -fo copy ${in_lz} || fail=1
cmp ${inD} copy || fail=1
printf .
"${LZIPRECOVER}" -D 921,1000 ${in_lz} > copy || fail=1
@@ -102,6 +115,11 @@ for i in 1 2 3 ; do
printf .
done
+cat ${in_lz} > anyothername || framework_failure
+"${LZIP}" -d anyothername || fail=1
+cmp ${in} anyothername.out || fail=1
+printf .
+
echo
if [ ${fail} = 0 ] ; then
echo "tests completed successfully."
diff --git a/testsuite/unzcrash.cc b/testsuite/unzcrash.cc
new file mode 100644
index 0000000..4c49035
--- /dev/null
+++ b/testsuite/unzcrash.cc
@@ -0,0 +1,353 @@
+/* Unzcrash - A test program written to test robustness to
+ decompression of corrupted data.
+ Inspired by unzcrash.c from Julian Seward's bzip2.
+ Copyright (C) 2008, 2009, 2010, 2011, 2012 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 3 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.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <cerrno>
+#include <climits>
+#include <csignal>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <string>
+#include <vector>
+#include <stdint.h>
+#include <unistd.h>
+
+#include "../arg_parser.h"
+
+#if CHAR_BIT != 8
+#error "Environments where CHAR_BIT != 8 are not supported."
+#endif
+
+#ifndef LLONG_MAX
+#define LLONG_MAX 0x7FFFFFFFFFFFFFFFLL
+#endif
+#ifndef LLONG_MIN
+#define LLONG_MIN (-LLONG_MAX - 1LL)
+#endif
+#ifndef ULLONG_MAX
+#define ULLONG_MAX 0xFFFFFFFFFFFFFFFFULL
+#endif
+
+
+namespace {
+
+const char * const Program_name = "Unzcrash";
+const char * const program_name = "unzcrash";
+const char * const program_year = "2012";
+const char * invocation_name = 0;
+
+int verbosity = 0;
+
+
+void show_help()
+ {
+ std::printf( "%s - A test program written to test robustness to\n", Program_name );
+ std::printf( "decompression of corrupted data.\n"
+ "\nUsage: %s [options] \"lzip -tv\" filename.lz\n", invocation_name );
+ std::printf( "\nThis program reads the specified file and then repeatedly decompresses\n"
+ "it, increasing 256 times each byte of the compressed data, so as to test\n"
+ "all possible one-byte errors. This should not cause any invalid memory\n"
+ "accesses. If it does, please, report it as a bug.\n"
+ "\nOptions:\n"
+ " -h, --help display this help and exit\n"
+ " -V, --version output version information and exit\n"
+ " -b, --bits=<n>[,<n>]... test <n>-bit errors instead of full byte\n"
+ " -p, --position=<bytes> first byte position to test\n"
+ " -q, --quiet suppress all messages\n"
+ " -s, --size=<bytes> number of byte positions to test\n"
+ " -v, --verbose be verbose (a 2nd -v gives more)\n"
+ "\nReport bugs to lzip-bug@nongnu.org\n"
+ "Lzip home page: http://www.nongnu.org/lzip/lzip.html\n" );
+ }
+
+
+void show_version()
+ {
+ std::printf( "%s %s\n", Program_name, PROGVERSION );
+ std::printf( "Copyright (C) %s Antonio Diaz Diaz.\n", program_year );
+ std::printf( "License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\n"
+ "This is free software: you are free to change and redistribute it.\n"
+ "There is NO WARRANTY, to the extent permitted by law.\n" );
+ }
+
+
+void show_error( const char * const msg, const int errcode = 0,
+ const bool help = false )
+ {
+ if( verbosity >= 0 )
+ {
+ if( msg && msg[0] )
+ {
+ std::fprintf( stderr, "%s: %s", program_name, msg );
+ if( errcode > 0 )
+ std::fprintf( stderr, ": %s", std::strerror( errcode ) );
+ std::fprintf( stderr, "\n" );
+ }
+ if( help && invocation_name && invocation_name[0] )
+ std::fprintf( stderr, "Try '%s --help' for more information.\n",
+ invocation_name );
+ }
+ }
+
+
+void internal_error( const char * const msg )
+ {
+ if( verbosity >= 0 )
+ std::fprintf( stderr, "%s: internal error: %s.\n", program_name, msg );
+ std::exit( 3 );
+ }
+
+
+long long getnum( const char * const ptr,
+ const long long llimit = LLONG_MIN + 1,
+ const long long ulimit = LLONG_MAX )
+ {
+ errno = 0;
+ char *tail;
+ long long result = strtoll( ptr, &tail, 0 );
+ if( tail == ptr )
+ {
+ show_error( "Bad or missing numerical argument.", 0, true );
+ std::exit( 1 );
+ }
+
+ if( !errno && tail[0] )
+ {
+ int factor = ( tail[1] == 'i' ) ? 1024 : 1000;
+ int exponent = 0;
+ bool bad_multiplier = false;
+ switch( tail[0] )
+ {
+ case ' ': break;
+ case 'Y': exponent = 8; break;
+ case 'Z': exponent = 7; break;
+ case 'E': exponent = 6; break;
+ case 'P': exponent = 5; break;
+ case 'T': exponent = 4; break;
+ case 'G': exponent = 3; break;
+ case 'M': exponent = 2; break;
+ case 'K': if( factor == 1024 ) exponent = 1; else bad_multiplier = true;
+ break;
+ case 'k': if( factor == 1000 ) exponent = 1; else bad_multiplier = true;
+ break;
+ default : bad_multiplier = true;
+ }
+ if( bad_multiplier )
+ {
+ show_error( "Bad multiplier in numerical argument.", 0, true );
+ std::exit( 1 );
+ }
+ for( int i = 0; i < exponent; ++i )
+ {
+ if( LLONG_MAX / factor >= llabs( result ) ) result *= factor;
+ else { errno = ERANGE; break; }
+ }
+ }
+ if( !errno && ( result < llimit || result > ulimit ) ) errno = ERANGE;
+ if( errno )
+ {
+ show_error( "Numerical argument out of limits." );
+ std::exit( 1 );
+ }
+ return result;
+ }
+
+
+class Bitset8 // 8 value bitset (1..8)
+ {
+ bool data[8];
+ static bool valid_digit( const unsigned char ch )
+ { return ( ch >= '1' && ch <= '8' ); }
+
+public:
+ Bitset8() { for( int i = 0; i < 8; ++i ) data[i] = true; }
+
+ bool includes( const int i ) const
+ { return ( i >= 1 && i <= 8 && data[i-1] ); }
+
+ // Recognized formats: 1 1,2,3 1-4 1,3-5,8
+ bool parse( const char * p )
+ {
+ for( int i = 0; i < 8; ++i ) data[i] = false;
+ while( true )
+ {
+ const unsigned char ch1 = *p++;
+ if( !valid_digit( ch1 ) ) break;
+ if( *p != '-' ) data[ch1-'1'] = true;
+ else
+ {
+ ++p;
+ if( !valid_digit( *p ) || ch1 > *p ) break;
+ for( int c = ch1; c <= *p; ++c ) data[c-'1'] = true;
+ ++p;
+ }
+ if( *p == 0 ) return true;
+ if( *p == ',' ) ++p; else break;
+ }
+ show_error( "Invalid value or range." );
+ return false;
+ }
+
+ // number of n-bit errors per byte (n=0..8): 1 8 28 56 70 56 28 8 1
+ void print() const
+ {
+ std::fflush( stderr );
+ int c = 0;
+ for( int i = 0; i < 8; ++i ) if( data[i] ) ++c;
+ if( c == 8 ) std::printf( "Testing full byte.\n" );
+ else if( c == 0 ) std::printf( "Nothing to test.\n" );
+ else
+ {
+ std::printf( "Testing " );
+ for( int i = 0; i < 8; ++i )
+ if( data[i] )
+ {
+ std::printf( "%d", i + 1 );
+ if( --c ) std::printf( "," );
+ }
+ std::printf( " bit errors.\n" );
+ }
+ std::fflush( stdout );
+ }
+ };
+
+
+int differing_bits( const uint8_t byte1, const uint8_t byte2 )
+ {
+ int count = 0;
+ uint8_t dif = byte1 ^ byte2;
+ while( dif )
+ { count += ( dif & 1 ); dif >>= 1; }
+ return count;
+ }
+
+} // end namespace
+
+
+int main( const int argc, const char * const argv[] )
+ {
+ enum { buffer_size = 3 << 20 };
+ Bitset8 bits; // if Bitset8::parse not called test full byte
+ int pos = 0;
+ int max_size = buffer_size;
+ invocation_name = argv[0];
+
+ const Arg_parser::Option options[] =
+ {
+ { 'h', "help", Arg_parser::no },
+ { 'b', "bits", Arg_parser::yes },
+ { 'p', "position", Arg_parser::yes },
+ { 'q', "quiet", Arg_parser::no },
+ { 's', "size", Arg_parser::yes },
+ { 'v', "verbose", Arg_parser::no },
+ { 'V', "version", Arg_parser::no },
+ { 0 , 0, Arg_parser::no } };
+
+ const Arg_parser parser( argc, argv, options );
+ if( parser.error().size() ) // bad option
+ { show_error( parser.error().c_str(), 0, true ); return 1; }
+
+ int argind = 0;
+ for( ; argind < parser.arguments(); ++argind )
+ {
+ const int code = parser.code( argind );
+ if( !code ) break; // no more options
+ const char * const arg = parser.argument( argind ).c_str();
+ switch( code )
+ {
+ case 'h': show_help(); return 0;
+ case 'b': if( !bits.parse( arg ) ) return 1; break;
+ case 'p': pos = getnum( arg, 0, buffer_size - 1 ); break;
+ case 'q': verbosity = -1; break;
+ case 's': max_size = getnum( arg, 1, buffer_size ); break;
+ case 'v': if( verbosity < 4 ) ++verbosity; break;
+ case 'V': show_version(); return 0;
+ default : internal_error( "uncaught option" );
+ }
+ } // end process options
+
+ if( argind + 2 != parser.arguments() )
+ {
+ if( verbosity >= 0 )
+ std::fprintf( stderr, "Usage: %s \"lzip -tv\" filename.lz\n",
+ invocation_name );
+ return 1;
+ }
+
+ FILE *f = std::fopen( parser.argument( argind + 1 ).c_str(), "rb" );
+ if( !f )
+ {
+ if( verbosity >= 0 )
+ std::fprintf( stderr, "Can't open file '%s' for reading\n",
+ parser.argument( argind + 1 ).c_str() );
+ return 1;
+ }
+
+ uint8_t * const buffer = new uint8_t[buffer_size];
+ const int size = std::fread( buffer, 1, buffer_size, f );
+ if( size >= buffer_size )
+ {
+ if( verbosity >= 0 )
+ std::fprintf( stderr, "input file '%s' is too big.\n",
+ parser.argument( argind + 1 ).c_str() );
+ return 1;
+ }
+ std::fclose( f );
+
+ f = popen( parser.argument( argind ).c_str(), "w" );
+ if( !f )
+ { show_error( "Can't open pipe", errno ); return 1; }
+ const int wr = std::fwrite( buffer, 1, size, f );
+ if( wr != size || pclose( f ) != 0 )
+ {
+ if( verbosity >= 0 )
+ std::fprintf( stderr, "Could not run '%s' : %s.\n",
+ parser.argument( argind ).c_str(), std::strerror( errno ) );
+ return 1;
+ }
+
+ std::signal( SIGPIPE, SIG_IGN );
+ if( verbosity >= 1 ) bits.print();
+
+ const int end = ( ( pos + max_size < size ) ? pos + max_size : size );
+ for( int i = pos; i < end; ++i )
+ {
+ if( verbosity >= 0 )
+ std::fprintf( stderr, "byte %d\n", i );
+ const uint8_t byte = buffer[i];
+ for( int j = 0; j < 255; ++j )
+ {
+ ++buffer[i];
+ if( bits.includes( differing_bits( byte, buffer[i] ) ) )
+ {
+ f = popen( parser.argument( argind ).c_str(), "w" );
+ if( !f )
+ { show_error( "Can't open pipe", errno ); return 1; }
+ std::fwrite( buffer, 1, size, f );
+ if( pclose( f ) == 0 && verbosity >= 0 )
+ std::fprintf( stderr, "0x%02X (0x%02X+0x%02X) passed the test\n",
+ buffer[i], byte, j + 1 );
+ }
+ }
+ buffer[i] = byte;
+ }
+
+ delete[] buffer;
+ return 0;
+ }
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