protected override byte FuzzValue(BaseRandomArrayFuzzerConfig.FuzzCombinationMode mode, byte value)
{
byte fuzz = (byte)_random.Next(Config.MinByteValue, Config.MaxByteValue);
byte ret = value;
switch (mode)
{
case BaseRandomArrayFuzzerConfig.FuzzCombinationMode.Add:
ret += fuzz;
break;
case BaseRandomArrayFuzzerConfig.FuzzCombinationMode.And:
ret &= fuzz;
break;
case BaseRandomArrayFuzzerConfig.FuzzCombinationMode.Or:
ret |= fuzz;
break;
case BaseRandomArrayFuzzerConfig.FuzzCombinationMode.Overwrite:
ret = fuzz;
break;
case BaseRandomArrayFuzzerConfig.FuzzCombinationMode.Xor:
ret ^= fuzz;
break;
}
return(ret);
}
protected override char FuzzValue(BaseRandomArrayFuzzerConfig.FuzzCombinationMode mode, char value)
{
ushort fuzz = (ushort)_random.Next(Config.MinValue, Config.MaxValue);
ushort ret = (ushort)value;
switch (mode)
{
case BaseRandomArrayFuzzerConfig.FuzzCombinationMode.Add:
ret += fuzz;
break;
case BaseRandomArrayFuzzerConfig.FuzzCombinationMode.And:
ret &= fuzz;
break;
case BaseRandomArrayFuzzerConfig.FuzzCombinationMode.Or:
ret |= fuzz;
break;
case BaseRandomArrayFuzzerConfig.FuzzCombinationMode.Overwrite:
ret = fuzz;
break;
case BaseRandomArrayFuzzerConfig.FuzzCombinationMode.Xor:
ret ^= fuzz;
break;
}
return((char)ret);
}
protected override bool FuzzValue(BaseRandomArrayFuzzerConfig.FuzzCombinationMode mode, bool value)
{
return(!value);
}
protected abstract U FuzzValue(BaseRandomArrayFuzzerConfig.FuzzCombinationMode mode, U value);
protected override void OnInput(DataFrames.DataFrame frame)
{
DataNode[] nodes = frame.SelectNodes(SelectionPath);
DataFrame preFuzz = null;
bool fuzzed = false;
if (nodes.Length > 0)
{
if (Config.LogPackets)
{
preFuzz = frame.CloneFrame();
}
}
foreach (DataNode node in nodes)
{
U[] data = NodeToArray(node);
if (data == null)
{
LogVerbose(CANAPE.NodeLibrary.Properties.Resources.BaseRandomArrayFuzzer_IgnoringData, node.Name);
continue;
}
int fuzzLength = FuzzerUtils.GetFuzzLength(data.Length, Config.FuzzStart, Config.FuzzLength);
if (fuzzLength > 0)
{
int points = GetPointCount(fuzzLength);
if (Config.LogFuzzText)
{
LogVerbose(CANAPE.NodeLibrary.Properties.Resources.BaseRandomArrayFuzzer_FuzzCount, points);
}
while (points > 0)
{
int pos = _random.Next(Config.FuzzStart, Config.FuzzStart + fuzzLength);
BaseRandomArrayFuzzerConfig.FuzzCombinationMode mode = Config.CombinationMode;
if (mode == BaseRandomArrayFuzzerConfig.FuzzCombinationMode.Random)
{
mode = (BaseRandomArrayFuzzerConfig.FuzzCombinationMode)_random.Next((int)BaseRandomArrayFuzzerConfig.FuzzCombinationMode.Max);
}
if ((pos >= 0) && (pos < data.Length))
{
U value = FuzzValue(mode, data[pos]);
if (!value.Equals(data[pos]))
{
fuzzed = true;
if (Config.LogFuzzText)
{
LogInfo(CANAPE.NodeLibrary.Properties.Resources.BaseRandomArrayFuzzer_FuzzInfo,
pos, data[pos], value);
}
}
data[pos] = value;
}
points--;
}
node.ReplaceNode(ArrayToNode(data, node));
}
}
if (fuzzed)
{
if (Config.LogPackets)
{
Graph.DoLogPacket(String.Format(CANAPE.NodeLibrary.Properties.Resources.BaseRandomArrayFuzzer_PreFuzzInfo, Name),
Config.Color, preFuzz, Config.ConvertToBytes);
Graph.DoLogPacket(String.Format(CANAPE.NodeLibrary.Properties.Resources.BaseRandomArrayFuzzer_PostFuzzInfo, Name),
Config.Color, frame, Config.ConvertToBytes);
}
}
WriteOutput(frame);
}
