public static string GenerateRandElement(string str, int count)
{
//choose random element index
int r = rand.Next(0, gram.Count);
//create element
Element e = gram[r];
e.name = e.type + "_" + varCount;
varCount++;
//choose random way to append to dom
string[] domAppend = { "createTextNode", "appendChild", "insertBefore", "replaceChild" };
//initialize element in string
String block = "var " + e.name + " = " + "document.createElement(\"" + e.type + "\");\n";
//optional - make element by calling method from another element
/*if(rand.Next() > 0.5)//happens ~1/2 the time
* {
*
* }*/
//append element to dom
string appendTo = "";
if (e.name.IndexOf("_0") != -1) //append first element to body
{
appendTo = "body";
}
else
{
appendTo = createdEl[rand.Next(createdEl.Count)].name;
}
block += "document." + appendTo + "." + domAppend[rand.Next(domAppend.Length)] + "(" + e.name + ");\n";
//if has children, can replace or remove children
//random number of attributes will be assigned
int numA = rand.Next(e.attributes.Count);
for (int j = 0; j < numA; j++)
{
//choose random attribute
EleAtt at = e.attributes[rand.Next(e.attributes.Count)];
string valA = "";
if (at.values != null)
{
//choose random value from array of values
valA = at.values[rand.Next(at.values.Length)];
}
block += e.name + "." + at.name + " = \"" + valA + "\";\n";
}
//add element to list of created elements
createdEl.Add(e);
//random number of methods to be called
int numM = rand.Next(e.methods.Count);
for (int j = 0; j < numM; j++)
{
//choose random method + call method on element
int randM = rand.Next(e.methods.Count);
string[] p = e.methods[randM].parameters.ToArray();
//for each parameter, find another element with attributes or methods of the correct type
block += e.name + "." + e.methods[randM].name.Trim() + "("; //start of method string
string block2 = "";
foreach (string param in p)
{
string value = "";
//if the method requires parameters
if (param != "")
{
//list of all possible elements
string[] values = { };
//search for created element of correct type - should be fixed so that not the last in list
foreach (Element el in createdEl)
{
//see if any methods return the correct type
foreach (EleMethod m in el.methods)
{
foreach (string s in m.re)
{
if (s.Trim().Equals(param.Trim()))
{
value = el.name + "." + m + "add parameters here";
}
}
}
//see if any attributes are correct type
foreach (EleAtt a in el.attributes)
{
if (a.type == param)
{
value = el.name + "." + a;
}
}
}
//see if any matches in createdJSEL
if (values.Length == 0)
{
foreach (JSElement jel in createdJSEl)
{
if (jel.type == param)
{
if (jel.name == null)
{
jel.name = jel.type + "_" + varCount;
varCount++;
}
value = jel.name;
}
}
}
//if there were no matches in createdEl, make a new js object with attributes or methods of correct type
if (values.Length == 0)
{
JSElement newEl = new JSElement(param + "_" + varCount, param);
block2 += "var " + newEl.name + " = new " + newEl.type + "();\n";
value = newEl.name;
varCount++;
createdJSEl.Add(newEl);
}
else
{
//randomly choose from list of possible elements
value = values[rand.Next(values.Length)];
}
}
//commas between parameters in method string
block += value + ", ";
}
//end of method string
block = block.Substring(0, block.Length - 2); //to remove ", "
block += ");\n";
block = block2 + block;
}
return(block);
}
public static List <Element> ReadGram()
{
string[] lines = File.ReadAllLines(@"C:\Users\Morga\Documents\Github\simpleFuzzer\grammar.txt");
//List<Element> elements = new List<Element>();//list of elements in grammar
Element temp = new Element();
foreach (string line in lines)
{
if (temp != null && line.Trim() != null)
{
bool inherit = false;
if (line.IndexOf("::") != -1) //if heading line of grammar
//start of new element: add previous element to gram
{
if (gram.Count() > 0)
{
gram.Add(temp);
//search for inheritance
for (int i = 0; i < gram.Count(); i++)
{
//if there is an element to inherit from within the grammar
if (gram[i].type.IndexOf(line.Substring(line.IndexOf("::") + 2).Trim()) != -1)
{
temp = new Element(line.Trim().Substring(0, line.Trim().IndexOf("::")), gram[i]);
temp.name = temp.type + "_gram";
inherit = true;
i = gram.Count();//end loop
}
}
}
//if no inheritance
if (!inherit)
{
temp = new Element(line.Trim().Substring(0, line.Trim().IndexOf("::")));
}
gram.Add(temp);
}
else if (line.IndexOf("M: ") != -1)
{
//create method object w/name
int start = line.IndexOf("M: ") + 2;
EleMethod m = new EleMethod(line.Trim().Substring(start, line.Trim().IndexOf("|") - start));
//add parameters to method object
int pstart = line.IndexOf("|") + 2;
int plen = line.IndexOf("-->") - pstart;
string ptemp = line.Substring(pstart, plen);
if (ptemp.IndexOf(",") != -1 && ptemp.Trim().Length > 2)
{
m.parameters.Add(ptemp.Substring(0, ptemp.IndexOf(",")).Trim());
ptemp = ptemp.Substring(ptemp.IndexOf(",")).Trim().TrimStart(',');
}
m.parameters.Add(ptemp.Trim());
//add return types to method object
int rstart = line.IndexOf("-->");
int rlen = line.Length - rstart;
string rtemp = line.Substring(rstart, rlen);
if (rtemp.IndexOf(",") != -1 && rtemp.Trim().Length > 2)
{
m.re.Add(rtemp.Substring(0, ptemp.IndexOf(",")).Trim());
rtemp = rtemp.Substring(rtemp.IndexOf(",") + 1);
}
if (rtemp.Trim() != "")
{
m.re.Add(rtemp.Trim());
}
//add method object to element object
temp.methods.Add(m);
}
else if (line.IndexOf("A: ") != -1)
{
//create attribute object
int Astart = line.IndexOf("A: ") + 3;
int Amid = line.IndexOf("|") - 5;
int Aend = line.IndexOf("--");
string nameA = line.Substring(Astart, Amid);
string typeA = line.Substring(Amid + 7, Aend - Amid - 7);
string vals = line.Substring(Aend + 2);
string[] valA = new string[] { };
while (vals.Trim().Length > 0 && vals.IndexOf(",") != -1)
{
string[] tempVal = { vals.Substring(0, vals.IndexOf(", ")) };
valA = valA.Union(tempVal).ToArray();
vals = vals.Substring(vals.IndexOf(", ") + 1).Trim();
}
if (vals.Trim() == "") //if no values, assign random values
//generate random string
{
string randomStr = "";
for (int k = 0; k < rand.Next(5, 25); k++)
{
int dec = rand.Next(0, 254);
randomStr += Convert.ToChar(dec).ToString();
}
valA = new string[] { "abc", "123", "true", randomStr };
}
else
{
valA = new string[] { vals };
}
EleAtt a = new EleAtt(nameA, typeA, valA);
temp.attributes.Add(a);
}
}
}
return(gram);
}
