s3-tests/s3tests/fuzz_headers.py

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from boto.s3.connection import S3Connection
from optparse import OptionParser
from boto import UserAgent
from . import common
import traceback
import random
import string
import sys
class FuzzyRequest(object):
""" FuzzyRequests are initialized with a random seed and generate data to
get sent as valid or valid-esque HTTP requests for targeted fuzz testing
"""
def __init__(self, seed):
self.random = random.Random()
self.seed = seed
self.random.seed(self.seed)
self._generate_method()
self._generate_path()
self._generate_body()
self._generate_headers()
def __str__(self):
s = '%s %s HTTP/1.1\n' % (self.method, self.path)
for header, value in self.headers.iteritems():
s += '%s: ' %header
if isinstance(value, list):
for val in value:
s += '%s ' %val
else:
s += value
s += '\n'
s += '\n' # Blank line after headers are done.
s += '%s\r\n\r\n' %self.body
return s
def _generate_method(self):
METHODS = ['GET', 'POST', 'HEAD', 'PUT']
self.method = self.random.choice(METHODS)
def _generate_path(self):
path_charset = string.letters + string.digits
path_len = self.random.randint(0,100)
self.path = ''
for _ in xrange(path_len):
self.path += self.random.choice(path_charset)
self.auth_path = self.path # Not sure how important this is for these tests
def _generate_body(self):
body_charset = string.printable
body_len = self.random.randint(0, 1000)
self.body = ''
for _ in xrange(body_len):
self.body += self.random.choice(body_charset)
def _generate_headers(self):
self.headers = {'Foo': 'bar', 'baz': ['a', 'b', 'c']} #FIXME
def authorize(self, connection):
#Stolen shamelessly from boto's connection.py
connection._auth_handler.add_auth(self)
self.headers['User-Agent'] = UserAgent
if not self.headers.has_key('Content-Length'):
self.headers['Content-Length'] = str(len(self.body))
def parse_options():
parser = OptionParser()
parser.add_option('-O', '--outfile', help='write output to FILE. Defaults to STDOUT', metavar='FILE')
parser.add_option('--seed', dest='seed', type='int', help='initial seed for the random number generator', metavar='SEED')
parser.add_option('--seed-file', dest='seedfile', help='read seeds for specific requests from FILE', metavar='FILE')
parser.add_option('-n', dest='num_requests', type='int', help='issue NUM requests before stopping', metavar='NUM')
parser.set_defaults(num_requests=5)
return parser.parse_args()
def randomlist(n, seed=None):
""" Returns a generator function that spits out a list of random numbers n elements long.
"""
rng = random.Random()
rng.seed(seed if seed else None)
for _ in xrange(n):
yield rng.random()
def _main():
""" The main script
"""
(options, args) = parse_options()
random.seed(options.seed if options.seed else None)
s3_connection = common.s3.main
request_seeds = None
if options.seedfile:
FH = open(options.seedfile, 'r')
request_seeds = FH.readlines()
else:
request_seeds = randomlist(options.num_requests, options.seed)
for request_seed in request_seeds:
fuzzy = FuzzyRequest(request_seed)
fuzzy.authorize(s3_connection)
print fuzzy.seed, fuzzy
#http_connection = s3_connection.get_http_connection(s3_connection.host, s3_connection.is_secure)
#http_connection.request(fuzzy.method, fuzzy.path, body=fuzzy.body, headers=fuzzy.headers)
#response = http_connection.getresponse()
#if response.status == 500 or response.status == 503:
#print 'Request generated with seed %d failed:\n%s' % (fuzzy.seed, fuzzy)
def main():
common.setup()
try:
_main()
except Exception as e:
traceback.print_exc()
common.teardown()