dracoon 1.0.2

DRACOON API wrapper in Python

DRACOON-PYTHON-API

Python connector to DRACOON API
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Table of Contents

• About the Project
  • Built With
• Getting Started
  • Prerequisites
  • Installation
• Usage
• Roadmap
• Contributing
• License

About The Project

Disclaimer: this is an unofficial repo and is not supported by DRACOON
This package provides a wrapper for the DRACOON API including full crypto support. DRACOON is a cloud storage product / service (SaaS) by DRACOON GmbH (http://dracoon.com). DRACOON API documentation can be found here (Swagger UI):

https://dracoon.team/api/

Built With

• Python 3.9.0
• httpx module
• cryptography
• pydantic

List all dependencies

Getting Started

To get started, create a virtual environment in Python and install the dracoon package:

virtualenv <DIR>
source <DIR>/bin/activate 
python3 -m pip install dracoon

Prerequisites

You will need a working Python 3 installation - check your version:

• Python

python3 --version

Installation

1. Install the package from PyPi

python3 -m pip install dracoon

Usage

Import DRACOON

from dracoon import DRACOON

This is the main class and contains all other adapters to access DRACOON API endpoints. The object contains a client (DRACOONClient) which handles all http connections via httpx (async).

Object creation

dracoon = DRACOON(base_url, client_id, client_secret)

• client_id; please register your OAuth app or use dracoon_legacy_scripting (default)
• client_secret; please register your OAuth app or use dracoon_legacy_scripting - secret is an empty string (no secret)
• base_url: Your DRACOON URL instance (e.g. https://dracoon.team)

Authentication

Password flow

connection = await dracoon.connect(OAuth2ConnectionType.password_flow, username, password)

The connection result contains the tokens (access and refresh, including validity).

You need pass one of the supported OAuth2 connection types. To access the enums, import OAuth2ConnectionType:

from dracoon import DRACOON, OAuth2Connectiontype

Please note: you can only authenticate if OAuth app is correctly configured. Only local accounts (including Active Directory) can be used via password flow. Full example: Login via password flow

Authorization code flow

print(dracoon.get_code_url())
auth_code = input('Enter auth code:')
connection = await dracoon.connect(auth_code=auth_code)

If you do not provide a connection type, the default will be auth code. You should prompt (or fetch) the auth code via the respective url. Full example: Login via auth code

Please note: you can only authenticate if OAuth app is correctly configured. You will need a custom app with authorization code flow enabled and you will need to set your redirect uri to https://your.domain.com/oauth/callback

Test connection

connected = dracoon.test_connection()

This will provide a true / false result depending on the connection. An authenticated ping is used to verify the tokens are valid.

Refresh token

All methods check for access token validity and fetch new tokens, if the access tokens expire. Therefore it should not be necessary to manually request it.

You can manually use the refresh token auth as follows:

connection = await dracoon.client.connect(OAuth2ConnectionType.refresh_token)

Every connect process will update the connection.

Log out

await dracoon.logout()

This will revoke both access and refresh tokens.

Send requests

1. You can access specific API endpoints by accessing the related adapter, e.g. for users, once you have connected:

result = await dracoon.users.get_users()

Please note:

• GET requests are limited to returning 500 items. Therefore all such requests contain an offset parameter (default is 0)
• Providing a filter is optional - see API documentation and examples on usage
• If you do not connect the client, the adapters are not instantiated and cannot be accessed!
• All (!) calls are async methods and need to be awaited

Available adapters:

dracoon.config  # config API including webhooks
dracoon.users  # users management
dracoon.groups # groups management
dracoon.user # user account and keypair setup
dracoon.nodes # nodes (up- and download including S3 direct up)
dracoon.shares # shares and file requests
dracoon.uploads # upload API
dracoon.reports # new reporting API
dracoon.eventlog # old eventlog API

2. This package contains type hints and includes models for all payloads (updates and create payloads). To faciliate compliant object creation, there are several helper methods which can be found via make_, e.g.:

room = dracoon.nodes.make_room(...)

This helps finding the right parameters and building objects that are compliant with the DRACOON models.

Cryptography

DRACOON cryptography is fully supported by the package. In order to use it, import the relevant functions or en- and decryptors:

from dracoon.crypto import create_plain_userkeypair
from dracoon.crypto import create_file_key

Create a new keypair

The account adapter (user) includes a method to set a new keypair:

dracoon.user.set_keypair(secret)

A new keypair will be generated (4096bit RSA asymmetric). Prior to setting a new keypair you always need to delete the old one! Please note: Deleting a keypair can cause data loss.

Getting your (plain) keypair

In order to work with encrypted rooms you will need to access your keypair:

await dracoon.get_keypair(secret=secret)

This method of the main API wrapper will accept a secret (that you need to pass or prompt) returns the plain keypair and stores in in the client for the current session.

En- and decode on the fly (in memory)

For smaller payload you can directly use the functions returning either plain or encrypted bytes like this:

plain_bytes = decrypt_bytes(enc_data, plain_file_key)
enc_bytes = encrypt_bytes(plain_data, plain_file_key)

Chunking

For larger files it is recommended to encrypt (and upload) in chunks. An example of encryptor usage:

dracoon_cipher = FileEncryptionCipher(plain_file_key=plain_file_key)
enc_chunk = dracoon_cipher.encode_bytes(chunk)
last_data, plain_file_key = dracoon_cipher.finalize()

You can instantiate an encryptor / decryptor by passing a plain file key. When finalizing, you need to add the last data to the last chunk. The result of the completed encryption is an updated plain_file_key with a specific tag.

Hint: You do not need to implement the upload process and can directly use full methods in the uploads adapter (see next chapter).

Uploads

The uploads adapter includes full methods to upload data to DRACOON and includes chunking and encryption support.

Here is an example of uploading a file to an encrypted room with only a few lines of code:

upload_channel = CreateUploadChannel(parentId=9999, name=file_path.split('/')[-1])

res = await dracoon.nodes.create_upload_channel(upload_channel=upload_channel)
channel_res = res.json()

res = await dracoon.uploads.upload_encrypted(file_path=file_path, target_id=9999, upload_channel=channel_res, plain_keypair=plain_keypair)
    

The default chunk size is 5 MB but can be passed as an option (chunksize, in bytes).

The main API wrapper includes a method that includes upload for encrypted and unencrypted files. Full example: File upload

Downloads

The downloads adapter includes full methods to download data from DRACOON including chunking and encryption support.

In order to download a file, generate a download url and use the relevant method:

res = await self.nodes.get_download_url(node_id=node_id)
download_url = res.json()["downloadUrl"]

await.self.downloads.download_unencrypted(download_url=download_url, target_path=target_path, node_info=node_info)
    

To get the node information based on a path, you can use the following method:

node_info = await self.nodes.get_node_from_path(file_path)

In order to download encrypted files, you will need to unlock your keypair and retrieve your file key:

plain_keypair = dracoon.get_keypair(secret)
# get node id via node info (see above)
file_key = await self.nodes.get_user_file_key(node_id)
plain_file_key = decrypt_file_key(file_key, plain_keypair)

As with uploads, the main wrapper has a method which handles encryption, keypair and file key. Full example: Download files

Examples

For examples, check out the example files:

• Login via password flow
• Login via auth code
• Create a user
• Set a new keypair
• Upload file
• Download files

Roadmap

• Add S3 direct upload
• Add branding API
• Error handling, testing coverage
• Complete all types (update to data classes, remove pydantic, return objects)

License

Distributed under the Apache License. See LICENSE for more information.