public static UnicodeTestCases LoadUnicodeCharMappingsFromFile(string fPath)
{
XmlDocument doc = new XmlDocument();
UnicodeTestCases list = new UnicodeTestCases();
try
{
doc.Load(fPath);
}
catch (FileNotFoundException e)
{
Trace.WriteLine(String.Format("Error opening XML document contained test cases: Error {0}", e.Message));
}
//Parsing into structures..
try
{
foreach (XmlNode node in doc.SelectNodes("/UnicodeTestMappings/UnicodeTestMapping"))
{
UnicodeTestCaseTypes t = UAUtilities.GetMappingTypeFromString(node.Attributes["Type"].Value);
switch (t)
{
case UnicodeTestCaseTypes.Transformable:
list.Add(ParseTransformable(node));
break;
case UnicodeTestCaseTypes.Traditional:
list.Add(ParseTraditional(node));
break;
case UnicodeTestCaseTypes.Overlong:
list.Add(ParseOverlong(node));
break;
}
}
}
catch(Exception e)
{
Trace.WriteLine(String.Format("Error parsing XML Document {0]", e.Message));
throw e;
}
return list;
}
public UASettings()
{
this.canary = "pqz";
this.domainFilters = new List<string>();
this.UnicodeTestMappings = XmlMappingLoader.LoadUnicodeCharMappingsFromFile(UAUtilities.GetModuleLocation() + MappingFileName);
}
/// <summary>
/// This method is where result "confidence" is calculated. A list of all the occurences of the "canary" should be passed in.
/// </summary>
/// <param name="s">Session object with request/response</param>
/// <param name="matches">These are the canary matches..</param>
/// <param name="lookAheadFromMatchLoc"></param>
/// <returns></returns>
public List<ResponseResult> CalcResults(Session s, MatchCollection matches, UnicodeTestCases mappings, string canary,int lookAheadFromMatchLoc)
{
List<ResponseResult> ret = new List<ResponseResult>();
//BUGBUG: Chris says he's getting an exception because the unicode char is not being associated with the session..
if (s.Chr == null)
{
return ret;
}
foreach (ResponseHeaderMatch hMatch in matches.GetMatchesInHeaders()) {
ResponseResult rr = new ResponseResult(hMatch);
//Get the match context in each header. Multipule headers could have the same key.. so
//a list is returned that contains each "string value" to a given key. Each element representing a different
//value for the same key.
foreach(string headerValue in s.Response.Headers[hMatch.HeaderName]){
int forwardDif = 0;
int offset = hMatch.Offset + hMatch.Token.TokenLength + lookAheadFromMatchLoc;
if (offset > headerValue.Length) {
forwardDif = offset - headerValue.Length;
}
string context = headerValue.Substring(hMatch.Offset - 4, hMatch.Token.TokenLength + lookAheadFromMatchLoc - forwardDif);
UnicodeTestCase mapping = mappings.GetMappingFromSourceCodePoint(s.Chr.CodePoint);
// At this point i have the context of the "canary" + 5 chars ahead.. this is where logic can be introduced
// to determine "the type of match"
rr.Chr = mapping.SourcePoint;
rr.Transformation = this.DeduceTransformation(context, mapping, canary);
rr.Context = context;
rr.TestCase = mapping;
//Add to result list
System.Diagnostics.Debug.Write(s.Fsession.fullUrl);
ret.Add(rr);
}
}
//This will change.. the response should be responsible for returning bytes based off detected encoding..
//That logic will be moved into the Response class at a later point.
string body = Encoding.UTF8.GetString(s.Response.BodyBytes);
//Now we find matches in the body..
foreach (BodyMatch bMatch in matches.GetMatchesInBody()) {
ResponseResult rr = new ResponseResult(bMatch);
//Get the match context.
int dif = 0;
int offset = bMatch.Offset + lookAheadFromMatchLoc + bMatch.Token.TokenLength;
if (offset > body.Length) {
dif = offset - body.Length;
}
string context = body.Substring(bMatch.Offset - 4, bMatch.Token.TokenLength + lookAheadFromMatchLoc - dif);
UnicodeTestCase mapping = mappings.GetMappingFromSourceCodePoint(s.Chr.CodePoint);
rr.Context = context;
rr.Chr = mapping.SourcePoint;
rr.Transformation = this.DeduceTransformation(context, mapping, canary);
rr.TestCase = mapping;
//System.Diagnostics.Debug.Write(s.Fsession.fullUrl);
ret.Add(rr);
}
//Add to result list.
return ret;
}
