diff options
Diffstat (limited to 'testsuite/unzcrash.cc')
| -rw-r--r-- | testsuite/unzcrash.cc | 28 |
1 files changed, 18 insertions, 10 deletions
diff --git a/testsuite/unzcrash.cc b/testsuite/unzcrash.cc index 24defa6..b2cdc4e 100644 --- a/testsuite/unzcrash.cc +++ b/testsuite/unzcrash.cc @@ -1,5 +1,4 @@ -/* Unzcrash - A test program written to test robustness to - decompression of corrupted data. +/* Unzcrash - Tests robustness of decompressors to corrupted data. Inspired by unzcrash.c from Julian Seward's bzip2. Copyright (C) 2008, 2009, 2010, 2011, 2012, 2013 Antonio Diaz Diaz. @@ -16,6 +15,12 @@ You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ +/* + Exit status: 0 for a normal exit, 1 for environmental problems + (file not found, invalid flags, I/O errors, etc), 2 to indicate a + corrupt or invalid input file, 3 for an internal consistency error + (eg, bug) which caused unzcrash to panic. +*/ #include <cerrno> #include <climits> @@ -47,9 +52,8 @@ 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( "%s - Tests robustness of decompressors to corrupted data.\n", Program_name ); + std::printf( "\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" @@ -63,8 +67,12 @@ void show_help() " -s, --size=<bytes> number of byte positions to test [all]\n" " -v, --verbose be verbose (a 2nd -v gives more)\n" "Examples of <range>: 1 1,2,3 1-4 1,3-5,8 1-3,5-8\n" + "\nExit status: 0 for a normal exit, 1 for environmental problems (file\n" + "not found, invalid flags, I/O errors, etc), 2 to indicate a corrupt or\n" + "invalid input file, 3 for an internal consistency error (eg, bug) which\n" + "caused unzcrash to panic.\n" "\nReport bugs to lzip-bug@nongnu.org\n" - "Lzip home page: http://www.nongnu.org/lzip/lzip.html\n" ); + "Lziprecover home page: http://www.nongnu.org/lzip/lziprecover.html\n" ); } @@ -160,7 +168,7 @@ unsigned long long getnum( const char * const ptr, } -class Bitset8 // 8 value bitset (1..8) +class Bitset8 // 8 value bitset (1 to 8) { bool data[8]; static bool valid_digit( const unsigned char ch ) @@ -195,7 +203,7 @@ public: return false; } - // number of n-bit errors per byte (n=0..8): 1 8 28 56 70 56 28 8 1 + // number of N-bit errors per byte (N=0 to 8): 1 8 28 56 70 56 28 8 1 void print() const { std::fflush( stderr ); @@ -295,9 +303,9 @@ int main( const int argc, const char * const argv[] ) if( size >= buffer_size ) { if( verbosity >= 0 ) - std::fprintf( stderr, "input file '%s' is too big.\n", + std::fprintf( stderr, "input file '%s' is too large.\n", parser.argument( argind + 1 ).c_str() ); - return 1; + return 2; } std::fclose( f ); |