Fix publish API, add basic client

api/client/apiclient.py

@@ -0,0 +1,61 @@
+''' API client for bocal-site '''
+
+import json
+import urllib.request
+import hmac
+import hashlib
+from datetime import datetime
+
+
+def sendReq(url):
+    def send(payload, host):
+        try:
+            req = urllib.request.Request('http://{}/{}'.format(host, url),
+                                         json.dumps(payload).encode('ascii'))
+            req.add_header('Content-Type', 'application/json')
+            handle = urllib.request.urlopen(req)
+            code = handle.getcode()
+            content = handle.read()
+            handle.close()
+            return (code, content.decode('utf-8'))
+        except urllib.error.HTTPError as e:
+            return (e.code, e.read().decode('utf-8'))
+
+    def authentify(apiKey, payload):
+        keyId, key = apiKey.split('$')
+        keyId = int(keyId)
+        time = datetime.now().timestamp()
+        mac = hmac.new(key.encode('utf-8'),
+                       msg=str(int(time)).encode('utf-8'),
+                       digestmod=hashlib.sha256)
+        mac.update(json.dumps(payload).encode('utf-8'))
+
+        auth = {
+            'keyId': keyId,
+            'timestamp': time,
+            'hmac': mac.hexdigest(),
+        }
+
+        return {
+            'auth': auth,
+            'req': payload,
+        }
+
+    def decorator(fct):
+        ''' Decorator. Adds authentication layer. '''
+        def wrap(host, apiKey, *args, **kwargs):
+            innerReq = fct(*args, **kwargs)
+            payload = authentify(apiKey, innerReq)
+            return send(payload, host)
+        return wrap
+
+    return decorator
+
+
+@sendReq(url='api/publish')
+def publish(bocId, url, date):
+    return {
+        'id': bocId,
+        'url': url,
+        'date': date.strftime('%Y-%m-%d'),
+    }