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#!/usr/bin/env fail2ban-python
import requests
try:
import hashlib
md5sum = hashlib.md5
except ImportError: # pragma: no cover
# hashlib was introduced in Python 2.5. For compatibility with those
# elderly Pythons, import from md5
import md5
md5sum = md5.new
def auth(v):
ha1 = md5sum(username + ':' + realm + ':' + password).hexdigest()
ha2 = md5sum("GET:" + url).hexdigest()
#response = md5sum(ha1 + ':' + v['nonce'][1:-1] + ':' + v['nc'] + ':' + v['cnonce'][1:-1]
# + ':' + v['qop'][1:-1] + ':' + ha2).hexdigest()
nonce = v['nonce'][1:-1]
nc=v.get('nc') or ''
cnonce = v.get('cnonce') or ''
#opaque = v.get('opaque') or ''
qop = v['qop'][1:-1]
algorithm = v['algorithm']
response = md5sum(ha1 + ':' + nonce + ':' + nc + ':' + cnonce + ':' + qop + ':' + ha2).hexdigest()
p = requests.Request('GET', host + url).prepare()
#p.headers['Authentication-Info'] = response
p.headers['Authorization'] = """
Digest username="%s",
algorithm="%s",
realm="%s",
uri="%s",
nonce="%s",
cnonce="",
nc="",
qop=%s,
response="%s"
""" % ( username, algorithm, realm, url, nonce, qop, response )
# opaque="%s",
print((p.method, p.url, p.headers))
s = requests.Session()
return s.send(p)
def preauth():
r = requests.get(host + url)
print(r)
r.headers['www-authenticate'].split(', ')
return dict([ a.split('=',1) for a in r.headers['www-authenticate'].split(', ') ])
url='/digest/'
host = 'http://localhost:801'
v = preauth()
username="username"
password = "password"
print(v)
realm = 'so far away'
r = auth(v)
realm = v['Digest realm'][1:-1]
# [Sun Jul 28 21:27:56.549667 2013] [auth_digest:error] [pid 24835:tid 139895297222400] [client 127.0.0.1:57052] AH01788: realm mismatch - got `so far away' but expected `digest private area'
algorithm = v['algorithm']
v['algorithm'] = 'super funky chicken'
r = auth(v)
# [Sun Jul 28 21:41:20 2013] [error] [client 127.0.0.1] Digest: unknown algorithm `super funky chicken' received: /digest/
print((r.status_code,r.headers, r.text))
v['algorithm'] = algorithm
r = auth(v)
print((r.status_code,r.headers, r.text))
nonce = v['nonce']
v['nonce']=v['nonce'][5:-5]
r = auth(v)
print((r.status_code,r.headers, r.text))
# [Sun Jul 28 21:05:31.178340 2013] [auth_digest:error] [pid 24224:tid 139895539455744] [client 127.0.0.1:56906] AH01793: invalid qop `auth' received: /digest/qop_none/
v['nonce']=nonce[0:11] + 'ZZZ' + nonce[14:]
r = auth(v)
print((r.status_code,r.headers, r.text))
#[Sun Jul 28 21:18:11.769228 2013] [auth_digest:error] [pid 24752:tid 139895505884928] [client 127.0.0.1:56964] AH01776: invalid nonce b9YAiJDiBAZZZ1b1abe02d20063ea3b16b544ea1b0d981c1bafe received - hash is not d42d824dee7aaf50c3ba0a7c6290bd453e3dd35b
url='/digest_time/'
v=preauth()
import time
time.sleep(1)
r = auth(v)
print((r.status_code,r.headers, r.text))
# Obtained by putting the following code in modules/aaa/mod_auth_digest.c
# in the function initialize_secret
# {
# const char *hex = "0123456789abcdef";
# char secbuff[SECRET_LEN * 4];
# char *hash = secbuff;
# int idx;
# for (idx=0; idx<sizeof(secret); idx++) {
# *hash++ = hex[secret[idx] >> 4];
# *hash++ = hex[secret[idx] & 0xF];
# }
# *hash = '\0';
# /* remove comment makings in below for apache-2.4+ */
# ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, s, /* APLOGNO(11759) */ "secret: %s", secbuff);
# }
import sha
import binascii
import base64
import struct
apachesecret = binascii.unhexlify('497d8894adafa5ec7c8c981ddf9c8457da7a90ac')
s = sha.sha(apachesecret)
v=preauth()
print((v['nonce']))
realm = v['Digest realm'][1:-1]
(t,) = struct.unpack('l',base64.b64decode(v['nonce'][1:13]))
# whee, time travel
t = t + 5540
timepac = base64.b64encode(struct.pack('l',t))
s.update(realm)
s.update(timepac)
v['nonce'] = v['nonce'][0] + timepac + s.hexdigest() + v['nonce'][-1]
print(v)
r = auth(v)
#[Mon Jul 29 02:12:55.539813 2013] [auth_digest:error] [pid 9647:tid 139895522670336] [client 127.0.0.1:58474] AH01777: invalid nonce 59QJppTiBAA=b08983fd166ade9840407df1b0f75b9e6e07d88d received - user attempted time travel
print((r.status_code,r.headers, r.text))
url='/digest_onetime/'
v=preauth()
# Need opaque header handling in auth
r = auth(v)
print((r.status_code,r.headers, r.text))
r = auth(v)
print((r.status_code,r.headers, r.text))
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