commit b03e205de18db0bfad3ba9b87e1285bb42401c58
Author: Lauri Võsandi <lauri@pinecrypt.com>
Date:   Wed Jun 2 15:36:59 2021 +0300

    Initial commit

diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..d45622f
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,4 @@
+FROM python
+RUN pip install motor sanic sanic-prometheus sanic_wtf
+ADD lease.py /
+CMD /lease.py
diff --git a/lease.py b/lease.py
new file mode 100755
index 0000000..9c46df5
--- /dev/null
+++ b/lease.py
@@ -0,0 +1,105 @@
+#!/usr/bin/env python
+
+import os
+import socket
+from datetime import datetime
+from motor.motor_asyncio import AsyncIOMotorClient
+from prometheus_client import Counter
+from sanic import Sanic, response
+from sanic.exceptions import InvalidUsage, NotFound
+from sanic_prometheus import monitor
+from sanic_wtf import SanicForm
+from wtforms import IntegerField, StringField
+from wtforms.validators import DataRequired, IPAddress, NumberRange
+
+submit_count = Counter("pinecrypt_lease_submit", "IP updates", ["service"])
+flush_count = Counter("pinecrypt_lease_flush", "IP assignment flushes", ["service"])
+not_found_count = Counter("pinecrypt_lease_not_found", "Certificate not found", ["service"])
+
+class LeaseUpdateForm(SanicForm):
+    service = StringField("Service name")
+    internal_addr = StringField("Internal IP address", validators=[DataRequired(), IPAddress(ipv4=True, ipv6=True)])
+    remote_addr = StringField("Remote IP address", validators=[DataRequired(), IPAddress(ipv4=True, ipv6=True)])
+    remote_port = IntegerField(validators=[NumberRange(min=0, max=65534)])
+
+app = Sanic("lease")
+app.config["WTF_CSRF_ENABLED"] = False
+
+MONGO_URI = os.getenv("MONGO_URI", "mongodb://127.0.0.1:27017/default")
+FQDN = socket.getfqdn()
+
+
+@app.listener('before_server_start')
+async def setup_db(app, loop):
+    app.ctx.db = AsyncIOMotorClient(MONGO_URI).get_default_database()
+
+
+async def submit(request, q):
+    q["status"] = "signed"
+    # TODO: add expiration check
+
+    form = LeaseUpdateForm(request)
+    if not form.validate():
+        raise InvalidUsage("Invalid form input")
+
+    result = await app.ctx.db.certidude_certificates.update_one(q, {
+        "$set": {
+            "last_seen": datetime.utcnow(),
+            "instance": "%s-%s" % (FQDN, form.service.data),
+            "remote.port": form.remote_port.data,
+            "remote.addr": form.remote_addr.data,
+        },
+        "$addToSet": {
+            "ip": form.internal_addr.data
+        }
+    })
+    if result.modified_count == 1:
+        submit_count.labels(form.service.data).inc()
+        return response.text('Lease updated')
+    else:
+        assert result.modified_count == 0
+        not_found_count.labels(form.service.data).inc()
+        raise NotFound("Node not found")
+
+
+@app.route("/api/by-serial/<serial_number:int>", methods=["GET"])
+async def get_by_serial(request, serial_number):
+    obj = await app.ctx.db.certidude_certificates.find_one({
+        "serial_number": "%x" % serial_number,
+        "status": "signed"})
+        # TODO: Add expiration check
+    if obj:
+        return response.text("Certificate valid")
+    else:
+        raise NotFound("Certificate not found or not valid")
+
+
+@app.route("/api/by-dn/<distinguished_name:string>", methods=["POST"])
+async def submit_by_dn(request, distinguished_name):
+    return await submit(request, {"distinguished_name": distinguished_name.replace("%20", " ")})
+
+
+@app.route("/api/by-serial/<serial_number:int>", methods=["POST"])
+async def submit_by_serial(request, serial_number):
+    return await submit(request, {"serial_number": "%x" % serial_number})
+
+
+@app.route("/api/by-service/<service:string>", methods=["DELETE"])
+async def flush(request, service):
+    """
+    Flush IP addresses assigned by this instance as it was restarted
+    """
+    await app.ctx.db.certidude_certificates.update_many({
+        "instance": "%s-%s" % (FQDN, service),
+    }, {
+        "$unset": {
+            "ip": "",
+            "instance": "",
+        }
+    })
+    flush_count.labels(service).inc()
+    return response.text('Leases flushed')
+
+
+monitor(app).expose_endpoint()
+app.run(port=2001)