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| author | aaron <aaron@10gen.com> | 2012-12-27 15:28:43 -0800 |
|---|---|---|
| committer | aaron <aaron@10gen.com> | 2012-12-28 13:09:51 -0800 |
| commit | 7dd78bb5b8b6ed0b64f5e45510585fb3602930d9 (patch) | |
| tree | 9fee54205368700bba50d14b5d42332c7433ab7d /src/mongo/bson/bson_validate_test.cpp | |
| parent | 9661888594bc3606a469a01a9e30fe76b3e895f3 (diff) | |
| download | mongo-7dd78bb5b8b6ed0b64f5e45510585fb3602930d9.tar.gz | |
SERVER-4948 Reinstate bson validation fuzz tests.
Diffstat (limited to 'src/mongo/bson/bson_validate_test.cpp')
| -rw-r--r-- | src/mongo/bson/bson_validate_test.cpp | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/src/mongo/bson/bson_validate_test.cpp b/src/mongo/bson/bson_validate_test.cpp index 8924c413a82..3de58f5dd60 100644 --- a/src/mongo/bson/bson_validate_test.cpp +++ b/src/mongo/bson/bson_validate_test.cpp @@ -117,6 +117,48 @@ namespace { << " jsonSize: " << jsonSize << endl; } + TEST( BSONValidate, Fuzz ) { + int64_t seed = time( 0 ); + log() << "BSONValidate Fuzz random seed: " << seed << endl; + PseudoRandom randomSource( seed ); + + BSONObj original = BSON( "one" << 3 << + "two" << 5 << + "three" << BSONObj() << + "four" << BSON( "five" << BSON( "six" << 11 ) ) << + "seven" << BSON_ARRAY( "a" << "bb" << "ccc" << 5 ) << + "eight" << BSONDBRef( "rrr", OID( "01234567890123456789aaaa" ) ) << + "_id" << OID( "deadbeefdeadbeefdeadbeef" ) << + "nine" << BSONBinData( "\x69\xb7", 2, BinDataGeneral ) << + "ten" << Date_t( 44 ) << + "eleven" << BSONRegEx( "foooooo", "i" ) ); + + int32_t fuzzFrequencies[] = { 2, 10, 20, 100, 1000 }; + for( size_t i = 0; i < sizeof( fuzzFrequencies ) / sizeof( int32_t ); ++i ) { + int32_t fuzzFrequency = fuzzFrequencies[ i ]; + + // Copy the 'original' BSONObj to 'buffer'. + scoped_array<char> buffer( new char[ original.objsize() ] ); + memcpy( buffer.get(), original.objdata(), original.objsize() ); + + // Randomly flip bits in 'buffer', with probability determined by 'fuzzFrequency'. The + // first four bytes, representing the size of the object, are excluded from bit + // flipping. + for( int32_t byteIdx = 4; byteIdx < original.objsize(); ++byteIdx ) { + for( int32_t bitIdx = 0; bitIdx < 8; ++bitIdx ) { + if ( randomSource.nextInt32( fuzzFrequency ) == 0 ) { + reinterpret_cast<unsigned char&>( buffer[ byteIdx ] ) ^= ( 1U << bitIdx ); + } + } + } + BSONObj fuzzed( buffer.get() ); + + // Check that the two validation implementations agree (and neither crashes). + ASSERT_EQUALS( fuzzed.valid(), + validateBSON( fuzzed.objdata(), fuzzed.objsize() ).isOK() ); + } + } + TEST( BSONValidateFast, Empty ) { BSONObj x; ASSERT( validateBSON( x.objdata(), x.objsize() ).isOK() ); |