protected override void OnInput(DataFrame frame)
{
DataNode[] nodes = frame.SelectNodes(SelectionPath);
DataFrame oldFrame = null;
bool doLog = false;
string counterName = String.Format("{0}_count", Uuid);
if (nodes.Length > 0)
{
if (Config.LogPackets)
{
oldFrame = frame.CloneFrame();
}
}
foreach (DataNode node in nodes)
{
if (Config.NoConversion)
{
DataValue value = node as DataValue;
// If not a byte array then ignore
if ((value == null) || !(value.Value is byte[]))
{
LogVerbose(CANAPE.NodeLibrary.Properties.Resources.ByteFuzzer_IgnoringNode, node.Name);
continue;
}
}
byte[] data = node.ToArray();
int fuzzLength = FuzzerUtils.GetFuzzLength(data.Length, Config.FuzzStart, Config.FuzzLength);
if (fuzzLength > 0)
{
long count = Graph.GlobalMeta.IncrementCounterLong(counterName, Config.MinValue, Config.Increment);
if (Config.Increment < 0)
{
if (count < Config.MaxValue)
{
LogInfo("No more values to fuzz");
}
else
{
doLog = true;
}
}
else if (Config.Increment > 0)
{
if (count > Config.MaxValue)
{
LogInfo("No more values to fuzz");
}
else
{
doLog = true;
}
}
if (doLog)
{
if (Config.LogFuzzText)
{
LogVerbose("Fuzzing with value {0}", count);
}
byte[] countData = BitConverter.GetBytes(count);
Array.Resize(ref countData, fuzzLength);
if (!Config.LittleEndian)
{
countData = countData.Reverse().ToArray();
}
Buffer.BlockCopy(countData, 0, data, Config.FuzzStart, fuzzLength);
node.ReplaceNode(data);
}
}
}
if (doLog)
{
if (Config.LogPackets)
{
Graph.DoLogPacket(String.Format("{0}: Pre-fuzz", Name), Config.Color, oldFrame, Config.ConvertToBytes);
Graph.DoLogPacket(String.Format("{0}: Post-fuzz", Name), Config.Color, frame, Config.ConvertToBytes);
}
}
WriteOutput(frame);
}
protected override void OnInput(DataFrames.DataFrame frame)
{
DataNode[] nodes = frame.SelectNodes(SelectionPath);
DataFrame preFuzzFrame = null;
int nodeCount = nodes.Length;
bool fuzzed = false;
if (nodeCount > 0)
{
if (Config.LogPackets)
{
preFuzzFrame = frame.CloneFrame();
}
}
foreach (DataNode node in nodes)
{
DataValue value = node as DataValue;
string fuzzString;
if ((value != null) && (value.Value is string))
{
fuzzString = value.Value;
}
else
{
if (Config.NoConversion)
{
continue;
}
value = null;
fuzzString = _encoding.GetString(node.ToArray());
}
int fuzzLength = FuzzerUtils.GetFuzzLength(fuzzString.Length, Config.FuzzStart, Config.FuzzLength);
string newString;
if ((Config.FuzzStart == 0) && (fuzzLength == fuzzString.Length))
{
newString = FuzzString(fuzzString);
}
else if ((Config.FuzzStart >= 0) && (fuzzLength > 0))
{
string prefixString = fuzzString.Substring(0, Config.FuzzStart);
string suffixString = fuzzString.Substring(Config.FuzzStart + fuzzLength);
newString = String.Concat(prefixString, FuzzString(fuzzString.Substring(Config.FuzzStart, fuzzLength)), suffixString);
}
else
{
continue;
}
if (newString != fuzzString)
{
fuzzed = true;
if (Config.LogFuzzText)
{
LogInfo("Fuzzed string '{0}'", fuzzString);
}
}
if (value != null)
{
value.Value = newString;
}
else
{
node.ReplaceNode(_encoding.GetBytes(newString));
}
}
if (nodeCount > 0)
{
if (Config.LogPackets)
{
if (fuzzed)
{
Graph.DoLogPacket(String.Format("{0}: Pre-fuzz", Name), Config.Color, preFuzzFrame, Config.ConvertToBytes);
Graph.DoLogPacket(String.Format("{0}: Post-fuzz", Name), Config.Color, frame, Config.ConvertToBytes);
}
}
}
WriteOutput(frame);
}
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);
}
