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This repository was archived by the owner on Apr 13, 2024. It is now read-only.

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requests_auth.py

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requests_auth.py

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import requests.auth
try:
# Python 3
from urllib.parse import urlparse
except ImportError:
# Python 2
from urlparse import urlparse
from .sign import HeaderSigner
class HTTPSignatureAuth(requests.auth.AuthBase):
"""
Sign a request using the http-signature scheme.
https://github.com/joyent/node-http-signature/blob/master/http_signing.md
`key_id` is the mandatory label indicating to the server which secret to
use secret is the filename of a pem file in the case of rsa, a password
string in the case of an hmac algorithm
`algorithm` is one of the six specified algorithms
headers is a list of http headers to be included in the signing string,
defaulting to "Date" alone.
"""
def __init__(self, key_id='', secret='', algorithm=None, headers=None):
headers = headers or []
self.header_signer = HeaderSigner(
key_id=key_id, secret=secret,
algorithm=algorithm, headers=headers)
self.uses_host = 'host' in [h.lower() for h in headers]
def __call__(self, r):
headers = self.header_signer.sign(
r.headers,
# 'Host' header unavailable in request object at this point
# if 'host' header is needed, extract it from the url
host=urlparse(r.url).netloc if self.uses_host else None,
method=r.method,
path=r.path_url)
r.headers.update(headers)
return r
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