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from urllib.request import parse_keqv_list, parse_http_list
from authlib.common.urls import (
urlparse, extract_params, url_decode,
)
from .signature import (
SIGNATURE_TYPE_QUERY,
SIGNATURE_TYPE_BODY,
SIGNATURE_TYPE_HEADER
)
from .errors import (
InsecureTransportError,
DuplicatedOAuthProtocolParameterError
)
from .util import unescape
class OAuth1Request:
def __init__(self, method, uri, body=None, headers=None):
InsecureTransportError.check(uri)
self.method = method
self.uri = uri
self.body = body
self.headers = headers or {}
# states namespaces
self.client = None
self.credential = None
self.user = None
self.query = urlparse.urlparse(uri).query
self.query_params = url_decode(self.query)
self.body_params = extract_params(body) or []
self.auth_params, self.realm = _parse_authorization_header(headers)
self.signature_type, self.oauth_params = _parse_oauth_params(
self.query_params, self.body_params, self.auth_params)
params = []
params.extend(self.query_params)
params.extend(self.body_params)
params.extend(self.auth_params)
self.params = params
@property
def client_id(self):
return self.oauth_params.get('oauth_consumer_key')
@property
def client_secret(self):
if self.client:
return self.client.get_client_secret()
@property
def rsa_public_key(self):
if self.client:
return self.client.get_rsa_public_key()
@property
def timestamp(self):
return self.oauth_params.get('oauth_timestamp')
@property
def redirect_uri(self):
return self.oauth_params.get('oauth_callback')
@property
def signature(self):
return self.oauth_params.get('oauth_signature')
@property
def signature_method(self):
return self.oauth_params.get('oauth_signature_method')
@property
def token(self):
return self.oauth_params.get('oauth_token')
@property
def token_secret(self):
if self.credential:
return self.credential.get_oauth_token_secret()
def _filter_oauth(params):
for k, v in params:
if k.startswith('oauth_'):
yield (k, v)
def _parse_authorization_header(headers):
"""Parse an OAuth authorization header into a list of 2-tuples"""
authorization_header = headers.get('Authorization')
if not authorization_header:
return [], None
auth_scheme = 'oauth '
if authorization_header.lower().startswith(auth_scheme):
items = parse_http_list(authorization_header[len(auth_scheme):])
try:
items = parse_keqv_list(items).items()
auth_params = [(unescape(k), unescape(v)) for k, v in items]
realm = dict(auth_params).get('realm')
return auth_params, realm
except (IndexError, ValueError):
pass
raise ValueError('Malformed authorization header')
def _parse_oauth_params(query_params, body_params, auth_params):
oauth_params_set = [
(SIGNATURE_TYPE_QUERY, list(_filter_oauth(query_params))),
(SIGNATURE_TYPE_BODY, list(_filter_oauth(body_params))),
(SIGNATURE_TYPE_HEADER, list(_filter_oauth(auth_params)))
]
oauth_params_set = [params for params in oauth_params_set if params[1]]
if len(oauth_params_set) > 1:
found_types = [p[0] for p in oauth_params_set]
raise DuplicatedOAuthProtocolParameterError(
'"oauth_" params must come from only 1 signature type '
'but were found in {}'.format(','.join(found_types))
)
if oauth_params_set:
signature_type = oauth_params_set[0][0]
oauth_params = dict(oauth_params_set[0][1])
else:
signature_type = None
oauth_params = {}
return signature_type, oauth_params