import requests_oauthlib (a dependency)

[yelp-api-cdsw] / requests_oauthlib / oauth1_auth.py

diff --git a/requests_oauthlib/oauth1_auth.py b/requests_oauthlib/oauth1_auth.py
new file mode 100644 (file)
index 0000000..e38a889
--- /dev/null
+++ b/requests_oauthlib/oauth1_auth.py
@@ -0,0 +1,71 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+from oauthlib.common import extract_params
+from oauthlib.oauth1 import (Client, SIGNATURE_HMAC, SIGNATURE_TYPE_AUTH_HEADER)
+
+CONTENT_TYPE_FORM_URLENCODED = 'application/x-www-form-urlencoded'
+CONTENT_TYPE_MULTI_PART = 'multipart/form-data'
+
+import sys
+if sys.version > "3":
+    unicode = str
+
+    def to_native_str(string):
+        return string.decode('utf-8')
+else:
+    def to_native_str(string):
+        return string
+
+# OBS!: Correct signing of requests are conditional on invoking OAuth1
+# as the last step of preparing a request, or at least having the
+# content-type set properly.
+class OAuth1(object):
+    """Signs the request using OAuth 1 (RFC5849)"""
+    def __init__(self, client_key,
+            client_secret=None,
+            resource_owner_key=None,
+            resource_owner_secret=None,
+            callback_uri=None,
+            signature_method=SIGNATURE_HMAC,
+            signature_type=SIGNATURE_TYPE_AUTH_HEADER,
+            rsa_key=None, verifier=None,
+            decoding='utf-8'):
+
+        try:
+            signature_type = signature_type.upper()
+        except AttributeError:
+            pass
+
+        self.client = Client(client_key, client_secret, resource_owner_key,
+            resource_owner_secret, callback_uri, signature_method,
+            signature_type, rsa_key, verifier, decoding=decoding)
+
+    def __call__(self, r):
+        """Add OAuth parameters to the request.
+
+        Parameters may be included from the body if the content-type is
+        urlencoded, if no content type is set a guess is made.
+        """
+        # Overwriting url is safe here as request will not modify it past
+        # this point.
+
+        content_type = r.headers.get('Content-Type', '')
+        if not content_type and extract_params(r.body):
+            content_type = CONTENT_TYPE_FORM_URLENCODED
+        if not isinstance(content_type, unicode):
+            content_type = content_type.decode('utf-8')
+
+        is_form_encoded = (CONTENT_TYPE_FORM_URLENCODED in content_type)
+
+        if is_form_encoded:
+            r.headers['Content-Type'] = CONTENT_TYPE_FORM_URLENCODED
+            r.url, headers, r.body = self.client.sign(
+                unicode(r.url), unicode(r.method), r.body or '', r.headers)
+        else:
+            # Omit body data in the signing of non form-encoded requests
+            r.url, headers, _ = self.client.sign(
+                unicode(r.url), unicode(r.method), None, r.headers)
+
+        r.prepare_headers(headers)
+        r.url = to_native_str(r.url)
+        return r