Merge branch 'master' of https://github.com/adulau/crl-monitor

Conflicts:
	bin/x509/ip-ssl-subject-api.py

README.md

@@ -33,7 +33,7 @@ IP Subnet Lookup in X.509 Subject Cache
 ip-ssl-subject.py can query a network subnet and display the known certificate seen and display the X.509 subject if known.
 
 ~~~~
-python ./bin/x509/ip-ssl-subject.py -s 199.16.156.0/28 -p 6381
+python ./server/ip-ssl-subject-api.py -s 199.16.156.0/28 -p 6381
 ~~~~
 
 ~~~~

server/ip-ssl-subject-api.py

@@ -0,0 +1,239 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+#
+# Lookup IP or CIDR block for known fingerprints and X.509 subjects via HTTP API /query/149.13.30.0/24
+# Lookup fingerprint of certificate where seen /cquery/16c25d401f35dd52fb4aec85eb1f1a28ce16f961
+#
+# Software is free software released under the GNU General Public License version 3 and later
+#
+# Copyright (c) 2015 Alexandre Dulaunoy - a@foo.be
+
+import redis
+import sys
+import netaddr
+import json
+import re
+import os
+
+import M2Crypto
+
+from tornado.concurrent import run_on_executor
+from concurrent.futures import ThreadPoolExecutor
+
+import tornado.httpserver
+import tornado.ioloop
+import tornado.options
+import tornado.web
+
+from tornado.options import define, options
+define("port", default=8888, help="run on the given port", type=int)
+certrepo = '/data/certs{}'
+ipmaxsize = 512  # /23
+servername = 'SSL Certificate API - https://github.com/adulau/crl-monitor'
+
+
+def checksha1(value=False):
+    if value is False or len(value) != 40:
+        return False
+    try:
+        int(value, 16)
+    except ValueError:
+        return False
+
+    return True
+
+
+def bpath(ha=None, level=6):
+    if ha is None:
+        return False
+    fn = ""
+    for i in range(0, level * 2, 2):
+        fn = fn + "/" + ha[i:2 + i]
+    return fn
+
+
+class SSLQueryHandler(tornado.web.RequestHandler):
+
+    # Default value in Python 3.5
+    # https://docs.python.org/3/library/concurrent.futures.html#concurrent.futures.ThreadPoolExecutor
+    nb_threads = tornado.process.cpu_count() * 5
+    executor = ThreadPoolExecutor(nb_threads)
+
+    @run_on_executor
+    def run_request(self, q):
+        try:
+            # Redis structure Set of (FP) per IP
+            r = redis.StrictRedis(host='127.0.0.1', port=8323)
+        except:
+            print("Unable to connect to the Redis server")
+            sys.exit(255)
+        subnets = [q]
+        out = {}
+        for subnet in subnets:
+            if re.findall(r":", subnet):
+                self.clear()
+                self.set_status(400)
+                self.finish('IPv6 is not (yet) supported')
+                continue
+            try:
+                iplist = netaddr.IPNetwork(subnet)
+            except:
+                self.clear()
+                self.set_status(400)
+                self.finish('Incorrect format')
+                continue
+
+            if iplist.size > ipmaxsize:
+                self.clear()
+                self.set_status(400)
+                self.finish('Maximum CIDR block size reached >/23')
+
+                if not self._finished:
+                    self.finish()
+            for ip in iplist:
+                s = r.smembers(ip)
+                if s:
+                    out[str(ip)] = {}
+                    out[str(ip)]['certificates'] = []
+                    out[str(ip)]['subjects'] = {}
+                    for fingerprint in s:
+                        subjects = r.smembers(fingerprint)
+                        out[str(ip)]['certificates'].append(fingerprint)
+                        if subjects:
+                            out[str(ip)]['subjects'][fingerprint] = {}
+                            out[str(ip)]['subjects'][fingerprint]['values'] = []
+                            for subject in subjects:
+                                    out[str(ip)]['subjects'][fingerprint]['values'].append(subject)
+
+        if not self._finished:
+            self.set_header('Content-Type', 'application/json')
+            self.set_header('Server', servername)
+            return json.dumps(out)
+
+        def get(self, q):
+            print("Query:", q)
+            try:
+                r = yield self.run_request(q)
+                self.write(r)
+            except Exception as e:
+                print('Something went wrong with {}:\n{}'.format(q, e))
+
+
+class CertificateQueryHandler(tornado.web.RequestHandler):
+
+    # Default value in Python 3.5
+    # https://docs.python.org/3/library/concurrent.futures.html#concurrent.futures.ThreadPoolExecutor
+    nb_threads = tornado.process.cpu_count() * 5
+    executor = ThreadPoolExecutor(nb_threads)
+
+    @run_on_executor
+    def run_request(self, q):
+        try:
+            r = redis.StrictRedis(host='127.0.0.1', port=8323)
+        except:
+            print("Unable to connect to the Redis server")
+            sys.exit(255)
+        fp = q.lower()
+        if not checksha1(value=fp):
+            self.clear()
+            self.set_status(400)
+            self.finish('Incorrect format of the certificate fingerprint (expected SHA1 in hex format)')
+
+        out = {}
+        out['certificate'] = fp
+        out['seen'] = []
+        ips = r.smembers('s:{}'.format(fp))
+        out['hits'] = len(ips)
+        for ip in ips:
+                out['seen'].append(ip)
+
+        if not self._finished:
+            self.set_header('Content-Type', 'application/json')
+            self.set_header('Server', servername)
+            return json.dumps(out)
+
+    def get(self, q):
+        print("Query:", q)
+        try:
+            r = yield self.run_request(q)
+            self.write(r)
+        except Exception as e:
+            print('Something went wrong with {}:\n{}'.format(q, e))
+
+
+class FetchCertificateHandler(tornado.web.RequestHandler):
+
+    # Default value in Python 3.5
+    # https://docs.python.org/3/library/concurrent.futures.html#concurrent.futures.ThreadPoolExecutor
+    nb_threads = tornado.process.cpu_count() * 5
+    executor = ThreadPoolExecutor(nb_threads)
+
+    @run_on_executor
+    def run_request(self, q):
+        # ICSI data
+        try:
+            ricsi = redis.StrictRedis(host='localhost', port=6380, db=5)
+        except:
+            print("Unable to connect to the Redis ICSI notary server")
+
+        fp = q.lower()
+        if not checksha1(value=fp):
+            self.clear()
+            self.set_status(400)
+            self.finish('Incorrect format of the certificate fingerprint (expected SHA1 in hex format)')
+
+        certpath = bpath(ha=fp)
+        certpath = os.path.join(certpath, fp)
+        certpath = certrepo.format(certpath)
+        if not os.path.exists(certpath):
+            self.clear()
+            self.set_status(400)
+            self.finish('Not existing certificate')
+
+        cert = M2Crypto.X509.load_cert(certpath, M2Crypto.X509.FORMAT_DER)
+        out = {}
+        out['pem'] = cert.as_pem()
+        out['info'] = {}
+        out['info']['issuer'] = cert.get_issuer().as_text()
+        out['info']['subject'] = cert.get_subject().as_text()
+        out['info']['fingerprint'] = cert.get_fingerprint(md='sha1')
+        out['info']['keylength'] = cert.get_pubkey().get_rsa().__len__()
+        out['info']['key'] = cert.get_pubkey().get_rsa().as_pem()
+        out['info']['not_before'] = cert.get_not_before().get_datetime().isoformat()
+        out['info']['not_after'] = cert.get_not_after().get_datetime().isoformat()
+        out['info']['extension'] = {}
+        extcount = cert.get_ext_count()
+
+        for i in range(0, extcount):
+                out['info']['extension'][cert.get_ext_at(i).get_name()] = cert.get_ext_at(i).get_value()
+        if ricsi.exists(fp):
+                icsi = ricsi.hgetall(fp)
+                out['icsi'] = icsi
+        if not self._finished:
+            self.set_header('Content-Type', 'application/json')
+            self.set_header('Server', servername)
+            return json.dumps(out)
+
+    def get(self, q):
+        print("Query:", q)
+        try:
+            r = yield self.run_request(q)
+            self.write(r)
+        except Exception as e:
+            print('Something went wrong with {}:\n{}'.format(q, e))
+
+
+def main():
+    tornado.options.parse_command_line()
+    app = tornado.web.Application(handlers=[
+        (r"/query/(.*)", SSLQueryHandler),
+        (r"/cquery/(.*)", CertificateQueryHandler),
+        (r"/cfetch/(.*)", FetchCertificateHandler)
+    ])
+    http_server = tornado.httpserver.HTTPServer(app)
+    http_server.listen(options.port)
+    tornado.ioloop.IOLoop.instance().start()
+
+
+if __name__ == '__main__':
+    sys.exit(main())