Add localbitcoins.py
parent
e3d3595efd
commit
8bec00d825
GPG Key ID:
5ACFCEED46C0904F
@ -0,0 +1,180 @@
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import datetime
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import hashlib
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import hmac as hmac_lib
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import requests
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import sys
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import time
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try:
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# Python 3.x
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from urllib.parse import urlparse
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except ImportError:
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# Python 2.7
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from urlparse import urlparse
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def oauth2(
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access_token,
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client_id,
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client_secret=None,
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refresh_token=None,
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expires_at=None,
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server="https://localbitcoins.com",
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):
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conn = Connection()
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conn._set_oauth2(server, client_id, client_secret, access_token, refresh_token, expires_at)
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return conn
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def hmac(hmac_key, hmac_secret, server="https://localbitcoins.com"):
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conn = Connection()
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conn._set_hmac(server, hmac_key, hmac_secret)
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return conn
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class Connection:
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def __init__(self):
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self.server = None
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# OAuth2 stuff
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self.client_id = None
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self.client_secret = None
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self.access_token = None
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self.refresh_token = None
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self.expires_at = None
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# HMAC stuff
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self.hmac_key = None
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self.hmac_secret = None
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def call(self, method, url, params=None, stream=False, files=None):
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method = method.upper()
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if method not in ["GET", "POST"]:
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raise Exception("Invalid method {}!".format(method))
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if method == "GET" and files:
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raise Exception("You cannot send files with GET method!")
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if files and not isinstance(files, dict):
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raise Exception('"files" must be a dict of file objects or file contents!')
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# If URL is absolute, then convert it
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if url.startswith(self.server):
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url = url[len(self.server) :]
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# If OAuth2
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if self.access_token:
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# If token is expiring tomorrow, then try to refresh it
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if (
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self.refresh_token
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and self.client_id
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and self.client_secret
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and (not self.expires_at or self.expires_at < datetime.datetime.utcnow() + datetime.timedelta(days=1))
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):
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refresh_params = {
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"refresh_token": self.refresh_token,
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"grant_type": "refresh_token",
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"client_id": self.client_id,
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"client_secret": self.client_secret,
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}
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r = requests.post(self.server + "/oauth2/access_token/", data=refresh_params)
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self.access_token = r.json()["access_token"]
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self.refresh_token = r.json()["refresh_token"]
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self.expires_at = datetime.datetime.utcnow() + datetime.timedelta(seconds=int(r.json()["expires_in"]))
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headers = {
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"Authorization-Extra": "Bearer " + self.access_token,
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}
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if method == "GET":
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return requests.get(self.server + url, params=params, headers=headers, stream=stream)
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else:
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return requests.post(
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self.server + url,
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data=params,
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headers=headers,
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stream=stream,
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files=files,
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)
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# If HMAC
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elif self.hmac_key:
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# If nonce fails, retry several times, then give up
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for retry in range(10):
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nonce = str(int(time.time() * 1000)).encode("ascii")
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# Prepare request based on method.
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if method == "POST":
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api_request = requests.Request("POST", self.server + url, data=params, files=files).prepare()
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params_encoded = api_request.body
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# GET method
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else:
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api_request = requests.Request("GET", self.server + url, params=params).prepare()
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params_encoded = urlparse(api_request.url).query
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# Calculate signature
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message = nonce + self.hmac_key + url.encode("ascii")
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if params_encoded:
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if sys.version_info >= (3, 0) and isinstance(params_encoded, str):
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message += params_encoded.encode("ascii")
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else:
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message += params_encoded
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signature = hmac_lib.new(self.hmac_secret, msg=message, digestmod=hashlib.sha256).hexdigest().upper()
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# Store signature and other stuff to headers
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api_request.headers["Apiauth-Key"] = self.hmac_key
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api_request.headers["Apiauth-Nonce"] = nonce
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api_request.headers["Apiauth-Signature"] = signature
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# Send request
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session = requests.Session()
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response = session.send(api_request, stream=stream)
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# If HMAC Nonce is already used, then wait a little and try again
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try:
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response_json = response.json()
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if int(response_json.get("error", {}).get("error_code")) == 42:
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time.sleep(0.1)
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continue
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except:
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# No JSONic response, or interrupt, better just give up
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pass
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return response
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raise Exception("Nonce is too small!")
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raise Exception("No OAuth2 or HMAC connection initialized!")
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def get_access_token(self):
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return self.access_token
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def get_refresh_token(self):
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return self.refresh_token
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def get_expires_at(self):
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return self.expires_at
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def _set_oauth2(self, server, client_id, client_secret, access_token, refresh_token, expires_at):
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self.server = server
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self.client_id = client_id
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self.client_secret = client_secret
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self.access_token = access_token
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self.refresh_token = refresh_token
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self.expires_at = expires_at
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self.hmac_key = None
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self.hmac_secret = None
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def _set_hmac(self, server, hmac_key, hmac_secret):
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self.server = server
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self.client_id = None
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self.client_secret = None
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self.access_token = None
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self.refresh_token = None
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self.expires_at = None
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self.hmac_key = hmac_key.encode("ascii")
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self.hmac_secret = hmac_secret.encode("ascii")
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