1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220
|
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
""" Python code to start a RIPE Atlas UDM (User-Defined
Measurement). This one is to test X.509/PKIX certificates in TLS servers.
You'll need an API key in ~/.atlas/auth.
After launching the measurement, it downloads the results and analyzes
them, displaying the name ("subject" in X.509 parlance) or issuer.
Stéphane Bortzmeyer <stephane+frama@bortzmeyer.org>
"""
import json
import time
import os
import string
import sys
import time
import socket
import collections
import copy
import Blaeu
from Blaeu import Host_Type
# https://github.com/pyca/pyopenssl https://pyopenssl.readthedocs.org/en/stable/
import OpenSSL.crypto
import cryptography
config = Blaeu.Config()
# Default values
config.display = "n" #Name
config.sni = True
config.hostname = None
config.entire_chain = False
# Override what's in the Blaeu package
config.port = 443
X509DATETIME = "%Y%m%d%H%M%SZ"
RFC3339DATETIME = "%Y-%m-%dT%H:%M:%SZ"
class Set():
def __init__(self):
self.total = 0
def usage(msg=None):
print("Usage: %s target-name-or-IP" % sys.argv[0], file=sys.stderr)
config.usage(msg)
print("""Also:
--issuer or -I : displays the issuer (default is to display the name)
--key or -k : displays the public key (default is to display the name)
--serial or -S : displays the serial number (default is to display the name)
--expiration or -E : displays the expiration datetime (default is to display the name)
--entire-chain : displays all the certificates (default is to display the first)
--hostname : hostname to send for SNI (default is to use the target)
--no-sni : do not send the SNI (Server Name Indication) (default is to send it)""",
file=sys.stderr)
def format_name(n):
result = ""
components = n.get_components()
for (k, v) in components:
result += "/%s=%s" % (k.decode(), v.decode())
return result
def specificParse(config, option, value):
result = True
if option == "--issuer" or option == "-I":
config.display = "i"
elif option == "--key" or option == "-k":
config.display = "k"
elif option == "--serial" or option == "-S":
config.display = "s"
elif option == "--expiration" or option == "-E":
config.display = "e"
elif option == "--entire-chain":
config.entire_chain = True
elif option == "--hostname":
config.hostname = value
elif option == "--no-sni":
config.sni = False
else:
result = False
return result
(args, data) = config.parse("IkSE", ["issuer", "serial", "expiration", "key", "entire-chain",
"hostname=", "no-sni"],
specificParse, usage)
if len(args) != 1:
usage("Not the good number of arguments")
sys.exit(1)
target = args[0]
if config.measurement_id is None:
data["definitions"][0]["target"] = target
data["definitions"][0]["type"] = "sslcert"
data["definitions"][0]["description"] = "X.509 cert of %s" % target
del data["definitions"][0]["size"] # Meaningless argument
target_type = Blaeu.host_type(target)
# RFC 6066 say that we cannot accept a literal IP
# address as hostname.
if target_type != Host_Type.Name and config.hostname is None and config.sni:
usage("If the target is an IP address, we need --hostname (or --no-sni)")
sys.exit(1)
if target_type == Host_Type.IPv6:
config.ipv4 = False
af = 6
if config.include is not None:
data["probes"][0]["tags"]["include"] = copy.copy(config.include)
data["probes"][0]["tags"]["include"].append("system-ipv6-works")
else:
data["probes"][0]["tags"]["include"] = ["system-ipv6-works",]
elif target_type == Host_Type.IPv4:
config.ipv4 = True
af = 4
if config.include is not None:
data["probes"][0]["tags"]["include"] = copy.copy(config.include)
data["probes"][0]["tags"]["include"].append("system-ipv4-works")
else:
data["probes"][0]["tags"]["include"] = ["system-ipv4-works",]
else:
# Hostname
if config.ipv4:
af = 4
else:
af = 6
data["definitions"][0]['af'] = af
if config.sni: # See above about RFC 6066
if config.hostname is not None: # Even if the target is a host
# name, we honor --hostname.
data["definitions"][0]['hostname'] = config.hostname
else:
data["definitions"][0]['hostname'] = target
if config.verbose:
print(data)
try:
measurement = Blaeu.Measurement(data)
except Blaeu.RequestSubmissionError as error:
print(Blaeu.format_error(error), file=sys.stderr)
sys.exit(1)
if config.verbose:
print("Measurement #%s to %s uses %i probes" % (measurement.id, target,
measurement.num_probes))
rdata = measurement.results(wait=True, percentage_required=config.percentage_required)
else:
measurement = Blaeu.Measurement(data=None, id=config.measurement_id)
rdata = measurement.results(wait=False)
sets = collections.defaultdict(Set)
if config.display_probe_asns:
config.display_probes = True
if config.display_probes:
probes_sets = collections.defaultdict(Set)
print(("%s probes reported" % len(rdata)))
for result in rdata:
if config.display_probes:
probe_id = result["prb_id"]
if config.display_probe_asns:
details = Blaeu.ProbeCache.cache_probe_id(config.cache_probes, probe_id) \
if config.cache_probes else Blaeu.Probe(probe_id)
asn = getattr(details, "asn_v%i" % (4 if config.ipv4 else 6), None)
if 'cert' in result:
value = []
if config.entire_chain:
num = len(result['cert'])
else:
num = 1
for i in range(0, num):
x509 = OpenSSL.crypto.load_certificate(OpenSSL.crypto.FILETYPE_PEM,
str(result['cert'][i]))
detail = ""
content = format_name(x509.get_subject())
if config.display == "i":
content += format_name(x509.get_issuer())
elif config.display == "k":
key = x509.get_pubkey()
content = "%s, type %s, %s bits" % \
(key.to_cryptography_key().public_bytes(cryptography.hazmat.primitives.serialization.Encoding.PEM, cryptography.hazmat.primitives.serialization.PublicFormat.SubjectPublicKeyInfo).decode().replace("\n", " ").replace("-----BEGIN PUBLIC KEY----- ", "")[:80] + "...",
key.type(), key.bits())
elif config.display == "s":
content = format(x509.get_serial_number(), '05x')
elif config.display == "e":
if x509.has_expired():
detail = " (EXPIRED)"
t = time.strptime(x509.get_notAfter().decode(), X509DATETIME)
content = "%s%s" % (time.strftime(RFC3339DATETIME, t), detail)
value.append("%s%s" % (content, detail))
value = "; ".join(value)
else:
if 'err' in result:
error = result['err']
elif 'alert' in result:
error = result['alert']
else:
error = "UNKNOWN ERROR"
value = "FAILED TO GET A CERT: %s" % error
sets[value].total += 1
if config.display_probes:
if config.display_probe_asns:
info = [probe_id, asn]
else:
info = probe_id
if value in probes_sets:
probes_sets[value].append(info)
else:
probes_sets[value] = [info,]
sets_data = sorted(sets, key=lambda s: sets[s].total, reverse=False)
for myset in sets_data:
detail = ""
if config.display_probes:
detail = "(probes %s)" % probes_sets[myset]
print("[%s] : %i occurrences %s" % (myset, sets[myset].total, detail))
print(("Test #%s done at %s" % (measurement.id,
time.strftime("%Y-%m-%dT%H:%M:%SZ", time.gmtime()))))
|