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53 changes: 40 additions & 13 deletions katnip/legos/http.py
Original file line number Diff line number Diff line change
Expand Up @@ -12,43 +12,68 @@ def _keyname(txt):
return '%s_key' % txt


def bit_length(num):
for x in range(1, 100):
if num.bit_length() > (2 << x):
continue
else:
return 2 << x


class CustomHeaderField(Container):
def __init__(self, key, value, end=False, fuzzable_key=False, fuzzable_value=True):
def __init__(self, key, value, params={}, end=False, fuzzable_key=False, fuzzable_value=True, name=None):
fields = [
String(name=_keyname(key), value=key, fuzzable=fuzzable_key),
Static(': '),
Container(name=_valuename(key), fields=value, fuzzable=fuzzable_value),
Static('\r\n')
]
# Append Field value params, splitted by '; '
for k, v in params.items():
fields += [
Static('; '),
String(value=k, name='%s_param_%s' % (_valuename(key), k)),
Static('="'),
String(value=v, name='%s_param_%s' % (_valuename(key), v)),
Static('"')
]
# Append end of line for current Field
fields.append(Static('\r\n'))
if end:
fields.append(Static('\r\n'))
super(CustomHeaderField, self).__init__(name=key, fields=fields, fuzzable=fuzzable_value)
name = key if name is None else name
super(CustomHeaderField, self).__init__(name=name, fields=fields, fuzzable=fuzzable_value)


class TextField(CustomHeaderField):
def __init__(self, key, value, end=False, fuzzable_key=False, fuzzable_value=True):
def __init__(self, key, value, params={}, end=False, fuzzable_key=False, fuzzable_value=True, name=None):
value_field = String(name="value", value=value)
super(TextField, self).__init__(key, value_field, end, fuzzable_key, fuzzable_value)
super(TextField, self).__init__(key=key, value=value_field, params=params,
end=end, fuzzable_key=fuzzable_key,
fuzzable_value=fuzzable_value, name=name)


class IntField(CustomHeaderField):
def __init__(self, key, value, end=False, fuzzable_key=False, fuzzable_value=True):
def __init__(self, key, value, params={}, end=False, fuzzable_key=False, fuzzable_value=True, name=None):
value_field = DecimalNumber(
name="value",
value=value,
num_bits=32,
num_bits=bit_length(value),
signed=True
)
super(IntField, self).__init__(key, value_field, end, fuzzable_key, fuzzable_value)
super(IntField, self).__init__(key=key, value=value_field, params=params,
end=end, fuzzable_key=fuzzable_key,
fuzzable_value=fuzzable_value, name=name)


class ContentLengthField(CustomHeaderField):
def __init__(self, value, sized_field, end=False, fuzzable_key=False, fuzzable_value=True):
value_field = OneOf(fields=[
Size(sized_field=sized_field, length=32, encoder=ENC_INT_DEC),
DecimalNumber(name="value", value=value, num_bits=32, signed=True),
Size(sized_field=sized_field, length=bit_length(value), encoder=ENC_INT_DEC),
DecimalNumber(name="value", value=value, num_bits=bit_length(value), signed=True),
])
super(ContentLengthField, self).__init__('Content-Length', value_field, end, fuzzable_key, fuzzable_value)
super(ContentLengthField, self).__init__(key='Content-Length', value=value_field,
end=end, fuzzable_key=fuzzable_key,
fuzzable_value=fuzzable_value)


class AuthorizationField(CustomHeaderField):
Expand All @@ -61,11 +86,13 @@ def __init__(self, key, username, password, end=False, delim=':', fuzz_username=
String(name='password', value=password, fuzzable=fuzz_password),
], encoder=ENC_BITS_BASE64)
]
super(AuthorizationField, self).__init__(key, value_field, end, fuzzable_key, fuzzable)
super(AuthorizationField, self).__init__(key=key, value=value_field, params={},
end=end, fuzzable_key=fuzzable_key,
fuzzable_value=fuzzable)


class HttpRequestLine(Container):
def __init__(self, name='http_request_line', method='GET', uri='/', protocol='HTTP', version=1.0, fuzzable_method=False, fuzzable_uri=False, fuzzable=True):
def __init__(self, name='http_request_line', method='GET', uri='/', protocol='HTTP', version=1.0, fuzzable_method=False, fuzzable_uri=True, fuzzable=True):
method_value = [method] if isinstance(method, str) else method
parsed = urlparse(uri)
uri_value = [Path(path=parsed.path, name='path', fuzz_delims=False)]
Expand Down
4 changes: 3 additions & 1 deletion katnip/legos/url.py
Original file line number Diff line number Diff line change
Expand Up @@ -254,9 +254,11 @@ def __init__(self, search='', fuzz_delims=False, fuzz_param=False, fuzz_value=Tr
]
for i, part in enumerate(search.split('&')):
part = part.split('=')
if len(part) != 2:
continue
if len(fields) >= 2:
fields.append(Delimiter(name='search_delim_%d' % i, value='&', fuzzable=fuzz_delims))
fields.append(Container(name='param_%s' % part[0], fields=[
fields.append(Container(name='param_%d_%s' % (i, part[0]), fields=[
String(name='search_%d_key' % i, value=part[0], fuzzable=fuzz_param),
Delimiter(value='=', fuzzable=fuzz_delims),
String(name='search_%d_value' % i, value=part[1], fuzzable=fuzz_value)
Expand Down