/
statement_builder.py
206 lines (185 loc) · 9.79 KB
/
statement_builder.py
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import subprocess as sp
import json
from createset import *
#builds geomatch statements
def build_geomatch_statement(predicate, statement,statementset):
old_statements = json.loads(sp.getoutput("aws waf-regional get-geo-match-set --geo-match-set-id " + predicate["DataId"]))
old_statements = old_statements['GeoMatchSet']
temp = {"GeoMatchStatement": {"CountryCodes" : []}}
for state in range(len(old_statements["GeoMatchConstraints"])):
temp["GeoMatchStatement"]["CountryCodes"].append(old_statements["GeoMatchConstraints"][state]["Value"])
if len(old_statements["GeoMatchConstraints"]) == 1:
return temp
elif (predicate["Negated"] == True):
tempstatement = {statementset : {"Statement" : {}}}
tempstatement[statementset]["Statement"] = temp
return tempstatement
else :
return {}
# builds ipmatch statements
def build_ipmatch_statement(predicate, statement,statementset):
ARN = create_ipset(predicate["DataId"])
if (len(ARN) == 1 and predicate["Negated"] == True):
temp = {statementset : {"Statement" : {}}}
for ipset in ARN:
temp[statementset]["Statement"] = {"IPSetReferenceStatement" : {"ARN": ipset}}
return temp
elif len(ARN)==1:
return {"IPSetReferenceStatement" : {"ARN": ARN[0]}}
elif (len(ARN) >1 and predicate["Negated"] == True):
temp = {statementset : {"Statement" : {"AndStatement" : {"Statements" : []}}}}
for ipset in ARN:
temp[statementset]["Statement"]["AndStatement"]["Statements"].append({"IPSetReferenceStatement" : {"ARN": ipset}})
return temp
elif (len(ARN) >1):
temp = {statementset : {"Statements" : []}}
for ipset in ARN:
temp[statementset]["Statements"].append({"IPSetReferenceStatement" : {"ARN": ipset}})
return temp
else:
return {}
#builds regexmatch statements
def build_regexmatch_statement(predicate, statement,statementset):
old_statements = json.loads(sp.getoutput("aws waf-regional get-regex-match-set --regex-match-set-id " + predicate["DataId"]))
old_statements = old_statements['RegexMatchSet']
for state in range(len(old_statements["RegexMatchTuples"])):
bytetuple = match_fields(old_state = old_statements["RegexMatchTuples"][state],i = state)
bytetuple['ARN'] = create_regex_patterset(old_statements["RegexMatchTuples"][state]['RegexPatternSetId'])
statement.append({"RegexPatternSetReferenceStatement" : bytetuple})
if (len(old_statements["RegexMatchTuples"]) == 1 and predicate["Negated"] == True):
temp = {statementset : {"Statement" : {}}}
temp[statementset]["Statement"] = statement[0]
return temp
elif len(old_statements["RegexMatchTuples"])==1:
return statement[0]
elif (len(old_statements["RegexMatchTuples"]) > 1 and predicate["Negated"] == True):
temp = {statementset : {"Statement" : {"AndStatement":{"Statements": []}}}}
temp[statementset]["Statement"]["AndStatement"]["Statements"] = statement
return temp
elif (len(old_statements["RegexMatchTuples"]) >1):
temp = {statementset : {"Statements" : []}}
temp[statementset]["Statements"] = statement
return temp
else:
return {}
#builds sizematch statements
def build_sizematch_statement(predicate, statement,statementset):
old_statements = json.loads(sp.getoutput("aws waf-regional get-size-constraint-set --size-constraint-set-id " + predicate["DataId"]))
old_statements = old_statements['SizeConstraintSet']
for state in range(len(old_statements["SizeConstraints"])):
bytetuple = match_fields(old_state = old_statements["SizeConstraints"][state],i = state)
bytetuple['ComparisonOperator'] = old_statements["SizeConstraints"][state]['ComparisonOperator']
bytetuple['Size'] = old_statements["SizeConstraints"][state]['Size']
statement.append({"SizeConstraintStatement" : bytetuple})
if (len(old_statements["SizeConstraints"]) == 1 and predicate["Negated"] == True):
temp = {statementset : {"Statement" : {}}}
temp[statementset]["Statement"] = statement[0]
return temp
elif len(old_statements["SizeConstraints"])==1:
return statement[0]
elif (len(old_statements["SizeConstraints"]) > 1 and predicate["Negated"] == True):
temp = {statementset : {"Statement" : {"AndStatement":{"Statements" : []}}}}
temp[statementset]["Statement"]["AndStatement"]["Statements"] = statement
return temp
elif (len(old_statements["SizeConstraints"]) >1):
temp = {statementset : {"Statements" : []}}
temp[statementset]["Statements"] = statement
return temp
else:
return {}
# Builds bytematch statements
def build_bytematch_statement(predicate, statement,statementset):
old_statements = json.loads(sp.getoutput("aws waf-regional get-byte-match-set --byte-match-set-id " + predicate["DataId"]))
old_statements = old_statements['ByteMatchSet']
for state in range(len(old_statements["ByteMatchTuples"])):
bytetuple = match_fields(old_state = old_statements["ByteMatchTuples"][state],i = state)
bytetuple['SearchString'] = old_statements["ByteMatchTuples"][state]['TargetString']
bytetuple['PositionalConstraint'] = old_statements["ByteMatchTuples"][state]['PositionalConstraint']
statement.append({"ByteMatchStatement" : bytetuple})
if (len(old_statements["ByteMatchTuples"]) == 1 and predicate["Negated"] == True) :
temp = {statementset : {"Statement" : {}}}
temp[statementset]["Statement"] = statement[0]
return temp
elif len(old_statements["ByteMatchTuples"])==1:
return statement[0]
elif (len(old_statements["ByteMatchTuples"]) > 1 and predicate["Negated"] == True):
temp = {statementset : {"Statement" : {"AndStatement":{"Statements" : []}}}}
temp[statementset]["Statement"]["AndStatement"]["Statements"] = statement
return temp
elif (len(old_statements["ByteMatchTuples"]) >1):
temp = {statementset : {"Statements" : []}}
temp[statementset]["Statements"] = statement
return temp
else:
return {}
#builds sql statements
def build_sql_statement(predicate, statement,statementset):
old_statements = json.loads(sp.getoutput("aws waf-regional get-sql-injection-match-set --sql-injection-match-set-id " + predicate["DataId"]))
old_statements = old_statements['SqlInjectionMatchSet']
for state in range(len(old_statements["SqlInjectionMatchTuples"])):
statement.append({"SqliMatchStatement" : match_fields(old_state = old_statements["SqlInjectionMatchTuples"][state],i = state)})
if (len(old_statements["SqlInjectionMatchTuples"]) == 1 and predicate["Negated"] == True):
temp = {statementset : {"Statement" : {}}}
temp[statementset]["Statement"] = statement[0]
return temp
elif len(old_statements["SqlInjectionMatchTuples"])==1:
return statement[0]
elif (len(old_statements["SqlInjectionMatchTuples"]) > 1 and predicate["Negated"] == True):
temp = {statementset : {"Statement" : {"AndStatement":{"Statements" : []}}}}
temp[statementset]["Statement"]["AndStatement"]["Statements"] = statement
return temp
elif (len(old_statements["SqlInjectionMatchTuples"]) >1):
temp = {statementset : {"Statements" : []}}
temp[statementset]["Statements"] = statement
return temp
else:
return {}
# Builds Xss statements
def build_xss_statement(predicate, statement,statementset):
old_statements = json.loads(sp.getoutput("aws waf-regional get-xss-match-set --xss-match-set-id " + predicate["DataId"]))
old_statements = old_statements['XssMatchSet']
for state in range(len(old_statements["XssMatchTuples"])):
statement.append({"XssMatchStatement" : match_fields(old_state = old_statements["XssMatchTuples"][state],i = state)})
if (len(old_statements["XssMatchTuples"])==1 and predicate["Negated"] == True):
temp = {statementset : {"Statement" : {}}}
temp[statementset]["Statement"] = statement[0]
return temp
elif len(old_statements["XssMatchTuples"])==1:
return statement[0]
elif (len(old_statements["XssMatchTuples"]) > 1 and predicate["Negated"] == True):
temp = {statementset : {"Statement" : {"AndStatement":{"Statements" : []}}}}
temp[statementset]["Statement"]["AndStatement"]["Statements"] = statement
return temp
elif (len(old_statements["XssMatchTuples"]) >1):
temp = {statementset : {"Statements" : []}}
temp[statementset]["Statements"] = statement
return temp
else:
return {}
# defines fields and text transformations
def match_fields(old_state, i):
statement = { "FieldToMatch": {},
"TextTransformations": []
}
if old_state["FieldToMatch"]["Type"] == "HEADER":
statement["FieldToMatch"]["SingleHeader"] = {
"Name" : old_state["FieldToMatch"]["Data"]
}
elif old_state["FieldToMatch"]["Type"] == "SINGLE_QUERY_ARG":
statement["FieldToMatch"]["SingleQueryArgument"] = {
"Name" : old_state["FieldToMatch"]["Data"]
}
elif old_state["FieldToMatch"]["Type"] == "ALL_QUERY_ARGS":
statement["FieldToMatch"]["AllQueryArguments"] = {}
elif old_state["FieldToMatch"]["Type"] == "URI":
statement["FieldToMatch"]["UriPath"] = {}
elif old_state["FieldToMatch"]["Type"] == "QUERY_STRING":
statement["FieldToMatch"]["QueryString"] = {}
elif old_state["FieldToMatch"]["Type"] == "BODY":
statement["FieldToMatch"]["Body"] = {}
elif old_state["FieldToMatch"]["Type"] == "METHOD":
statement["FieldToMatch"]["Method"] = {}
statement["TextTransformations"].append({
"Priority": i, "Type" : old_state["TextTransformation"]
})
return statement