From 8f5ad667aacca8bd5db5801b77d3e80d6e35ad68 Mon Sep 17 00:00:00 2001
From: sqozz <sqozz@geekify.de>
Date: Mon, 14 Oct 2019 14:34:34 +0200
Subject: [PATCH] Initial commit

---
 collectd-pyopenssl.py | 56 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100755 collectd-pyopenssl.py

diff --git a/collectd-pyopenssl.py b/collectd-pyopenssl.py
new file mode 100755
index 0000000..de5dd03
--- /dev/null
+++ b/collectd-pyopenssl.py
@@ -0,0 +1,56 @@
+#openssl stuff
+import OpenSSL
+import socket, ssl
+
+#date stuff
+import dateutil.parser as date_parser
+from pytz import utc as UTC
+from datetime import datetime
+
+#collectd stuff
+#import collectd
+
+import ipaddress
+
+import pdb
+
+DOMAIN = "geekify.de"
+address_family = "ipv4"
+TIMEOUT_SECONDS = 1
+
+def configure(config):
+    for c in config.children:
+        print(c)
+
+today = datetime.now(UTC)
+port = 443
+if address_family == "ipv4":
+    af = socket.AF_INET
+elif address_family == "ipv6":
+    af = socket.AF_INET6
+else:
+    proto = None
+
+try:
+    addrinfo = socket.getaddrinfo(DOMAIN, None, af, proto=socket.IPPROTO_TCP)
+
+    # addrinfo first contains an array of connections made, we want the first ([0]) and only one we made
+    # this tuple then contains (family, type, proto, canonname, sockaddr) - we want sockaddr == [4]
+    # this then can contain either (host, port) or (host, port, flowinfo, scopeid) depending on set address family. Since host is anyways at [0] we take this as final ip address
+    host = addrinfo[0][4][0]
+except socket.gaierror:
+    host = DOMAIN
+
+context = ssl.create_default_context()
+with socket.create_connection((host, port), TIMEOUT_SECONDS) as sock:
+    with context.wrap_socket(sock, server_hostname=DOMAIN) as sslsock:
+        der_cert = sslsock.getpeercert(True)
+        pem_cert = ssl.DER_cert_to_PEM_cert(der_cert)
+
+x509 = OpenSSL.crypto.load_certificate(OpenSSL.crypto.FILETYPE_ASN1, der_cert)
+exp = x509.get_notAfter().decode("utf-8")
+expirary_date = date_parser.parse(exp)
+delta = expirary_date - today
+print(delta.total_seconds())
+
+pdb.set_trace()