Method call

app/src/main/java/eu/faircode/email/CloudSync.java:591–615

(Context context, String user, String password, String command, JSONObject jrequest)

    // Lower level

    public static JSONObject call(Context context, String user, String password, String command, JSONObject jrequest)
            throws GeneralSecurityException, JSONException, IOException, InvalidCipherTextException {
        EntityLog.log(context, EntityLog.Type.Cloud, "Cloud command=" + command);

        jrequest.put("command", command);
        List<JSONObject> responses = new ArrayList<>();
        for (JSONArray batch : partition(jrequest.getJSONArray("items"))) {
            jrequest.put("items", batch);
            responses.add(_call(context, user, password, jrequest));
        }
        if (responses.size() == 1)
            return responses.get(0);
        else {
            JSONArray jall = new JSONArray();
            for (JSONObject response : responses)
                if (response.has("items")) {
                    JSONArray jitems = response.getJSONArray("items");
                    for (int i = 0; i < jitems.length(); i++)
                        jall.put(jitems.getJSONObject(i));
                }
            JSONObject jresponse = responses.get(0);
            jresponse.put("items", jall);
            return jresponse;
        }
    }

    private static byte[] getSalt(String user) throws NoSuchAlgorithmException {
        return MessageDigest.getInstance("SHA256").digest(user.getBytes());