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arweave_lib.py
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arweave_lib.py
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import json
import os
import requests
import logging
import hashlib
import arrow
import nacl.bindings
from jose import jwk
from jose.utils import base64url_encode, base64url_decode, base64
from jose.backends.cryptography_backend import CryptographyRSAKey
from Crypto.PublicKey import RSA
from Crypto.Signature import PKCS1_PSS
from Crypto.Hash import SHA256
from .utils import (
winston_to_ar,
ar_to_winston,
owner_to_address,
create_tag,
decode_tag
)
logger = logging.getLogger(__name__)
TRANSACTION_DATA_LIMIT_IN_BYTES = 2000000
class Wallet(object):
HASH = 'sha256'
def __init__(self, jwk_file='jwk_file.json'):
with open(jwk_file, 'r') as j_file:
self.jwk_data = json.loads(j_file.read())
self.jwk_data['p2s'] = ''
self.jwk = jwk.construct(self.jwk_data, algorithm=jwk.ALGORITHMS.RS256)
self.rsa = RSA.importKey(self.jwk.to_pem())
self.owner = self.jwk_data.get('n')
self.address = owner_to_address(self.owner)
self.api_url = "https://arweave.net"
self.balance = 0
def get_balance(self):
url = "{}/wallet/{}/balance".format(self.api_url, self.address)
response = requests.get(url)
if response.status_code == 200:
self.balance = winston_to_ar(response.text)
return self.balance
def sign(self, message):
h = SHA256.new(message)
signed_data = PKCS1_PSS.new(self.rsa).sign(h)
return signed_data
def verify(self):
pass
def get_last_transaction_id(self):
url = "{}/wallet/{}/last_tx".format(self.api_url, self.address)
response = requests.get(url)
if response.status_code == 200:
self.last_tx = response.text
return self.last_tx
class Transaction(object):
def __init__(self, wallet, **kwargs):
self.jwk_data = wallet.jwk_data
self.jwk = jwk.construct(self.jwk_data, algorithm="RS256")
self.wallet = wallet
self.id = kwargs.get('id', '')
self.last_tx = wallet.get_last_transaction_id()
self.owner = self.jwk_data.get('n')
self.tags = []
self.quantity = kwargs.get('quantity', '0')
data = kwargs.get('data', '')
if type(data) is bytes:
self.data = base64url_encode(data)
else:
self.data = base64url_encode(data.encode('ascii'))
self.target = kwargs.get('target', '')
self.to = kwargs.get('to', '')
self.api_url = "https://arweave.net"
reward = kwargs.get('reward', None)
if reward is not None:
self.reward = reward
else:
self.reward = self.get_reward(self.data)
self.signature = ''
self.status = None
def get_reward(self, data, target_address=None):
data_length = len(data)
url = "{}/price/{}".format(self.api_url,data_length)
if target_address:
url = "{}/price/{}/{}".format(self.api_url, data_length, target_address)
response = requests.get(url)
if response.status_code == 200:
reward = response.text
return reward
def add_tag(self, name, value):
tag = create_tag(name, value)
self.tags.append(tag)
def sign(self):
data_to_sign = self.get_signature_data()
raw_signature = self.wallet.sign(data_to_sign)
self.signature = base64url_encode(raw_signature)
self.id = base64url_encode(hashlib.sha256(raw_signature).digest())
if type(self.id) == bytes:
self.id = self.id.decode()
def get_signature_data(self):
tag_str = ""
for tag in self.tags:
name, value = decode_tag(tag)
tag_str += "{}{}".format(name.decode(), value.decode())
owner = base64url_decode(self.jwk_data['n'].encode())
target = base64url_decode(self.target)
data = base64url_decode(self.data)
quantity = self.quantity.encode()
reward = self.reward.encode()
last_tx = base64url_decode(self.last_tx.encode())
signature_data = owner + target + data + quantity + reward + last_tx + tag_str.encode()
return signature_data
def send(self):
url = "{}/tx".format(self.api_url)
response = requests.post(url, data=self.json_data)
logger.error("{}\n\n{}".format(response.text, self.json_data))
if response.status_code == 200:
logger.debug("RESPONSE 200: {}".format(response.text))
else:
logger.error("{}\n\n{}".format(response.text, self.json_data))
return self.last_tx
@property
def json_data(self):
jsons = json.dumps({
'data': self.data.decode(),
'id': self.id.decode() if type(self.id) == bytes else self.id,
'last_tx': self.last_tx,
'owner': self.owner,
'quantity': self.quantity,
'reward': self.reward,
'signature': self.signature.decode(),
'tags': self.tags,
'target': self.target
})
return jsons.replace(' ','')
def get_status(self):
url = "{}/tx/{}/status".format(self.api_url, self.id)
response = requests.get(url)
if response.status_code == 200:
self.status = json.loads(response.text)
else:
logger.error(response.text)
self.status = "PENDING"
return self.status
def get_transaction(self):
url = "{}/tx/{}".format(self.api_url, self.id)
response = requests.get(url)
tx = None
if response.status_code == 200:
self.load_json(response.text)
else:
logger.error(response.text)
return tx
def load_json(self, json_str):
json_data = json.loads(json_str)
self.data = json_data.get('data', '')
self.last_tx = json_data.get('last_tx', '')
self.owner = json_data.get('owner', '')
self.quantity = json_data.get('quantity', '')
self.reward = json_data.get('reward', '')
self.signature = json_data.get('signature', '')
self.tags = json_data.get('tags', '')
self.target = json_data.get('target', '')
logger.debug(json_data)
if __name__ == "__main__":
logging.basicConfig(level=logging.DEBUG)
from os.path import isfile, join
from os import listdir
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
def run_test(jwk_file):
wallet = Wallet(jwk_file)
pdf_filename = "/home/mike/Downloads/me.jpg"
with open(pdf_filename, 'rb') as pdf_file:
pdf_data = pdf_file.read()
balance = wallet.get_balance()
logger.debug(balance)
tx = Transaction(wallet=wallet, data=pdf_data)
tx.add_tag('app', "arweave-dapp_app_v1.3");
tx.add_tag('created', str(arrow.now().timestamp));
tx.add_tag('title', "Highcharts Demo");
tx.add_tag('description', "dsadsdasdasdasdas");
tx.add_tag('filename', "test2.pdf");
tx.sign(wallet)
tx.post()
logger.debug(tx.get_status())
new_tx = Transaction(wallet, id="3DEVEPwqNLIcuLzzPZrg6raHZui2rem6zcGV7Fpitag")
new_tx.get_transaction()
new_tx.get_status()
logger.debug(new_tx.status)
wallet_path = '/home/mike/Documents/python/arkive/arkive/wallet' # os.path.join(BASE_DIR, 'arkive', 'wallet')
files = [f for f in listdir(wallet_path) if isfile(join(wallet_path, f))]
if len(files) > 0:
filename = files[0]
else:
raise FileNotFoundError("Unable to load a wallet JSON file from wallet/ ")
run_test(join(wallet_path, filename))