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gaia/tests/python/gaia-ui-tests/gaiatest/utils/persona/assertion_util.py

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+#!/usr/bin/env python
+
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+import base64
+import json
+import requests
+
+
+class AssertionUtil():
+
+    # Persona verify assertion utils
+    def verifyAssertion(self, assertion, AUDIENCE, VERIFIER_URL, **params):
+        data = {'assertion': assertion, 'audience': AUDIENCE}
+        data.update(params)
+
+        return requests.post(VERIFIER_URL, data=data).json()
+
+    def decodeB64(self, b64input):
+        """
+        Add padding to b64input if necessary. I think python's base64
+        implementation is broken and this should not be necessary.
+        """
+        out = b64input.strip()
+        lastBytesLen = len(out) % 4
+        if lastBytesLen == 0:
+            pass
+        elif lastBytesLen == 3:
+            out += '='
+        elif lastBytesLen == 2:
+            out += '=='
+        else:
+            print out, lastBytesLen
+            raise Exception("Bad base64 input; last group contained weird number of bytes.")
+
+        return base64.b64decode(out)
+
+    def decode(self, encoded):
+        return json.loads(self.decodeB64(encoded))
+
+    def unpackAssertion(self, assertion):
+        # ignore signatures; we're not a verifier
+        header, claim, _, payload, _ = assertion.split('.');
+        return {"header": self.decode(header),
+                "claim": self.decode(claim),
+                "payload": self.decode(payload)}