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- # -*- coding: utf-8 -*-
- """
- oauthlib.utils
- ~~~~~~~~~~~~~~
- This module contains utility methods used by various parts of the OAuth 2 spec.
- """
- from __future__ import absolute_import, unicode_literals
- import os
- import datetime
- try:
- from urllib import quote
- except ImportError:
- from urllib.parse import quote
- try:
- from urlparse import urlparse
- except ImportError:
- from urllib.parse import urlparse
- from oauthlib.common import unicode_type, urldecode
- def list_to_scope(scope):
- """Convert a list of scopes to a space separated string."""
- if isinstance(scope, unicode_type) or scope is None:
- return scope
- elif isinstance(scope, (set, tuple, list)):
- return " ".join([unicode_type(s) for s in scope])
- else:
- raise ValueError("Invalid scope (%s), must be string, tuple, set, or list." % scope)
- def scope_to_list(scope):
- """Convert a space separated string to a list of scopes."""
- if isinstance(scope, (tuple, list, set)):
- return [unicode_type(s) for s in scope]
- elif scope is None:
- return None
- else:
- return scope.strip().split(" ")
- def params_from_uri(uri):
- params = dict(urldecode(urlparse(uri).query))
- if 'scope' in params:
- params['scope'] = scope_to_list(params['scope'])
- return params
- def host_from_uri(uri):
- """Extract hostname and port from URI.
- Will use default port for HTTP and HTTPS if none is present in the URI.
- """
- default_ports = {
- 'HTTP': '80',
- 'HTTPS': '443',
- }
- sch, netloc, path, par, query, fra = urlparse(uri)
- if ':' in netloc:
- netloc, port = netloc.split(':', 1)
- else:
- port = default_ports.get(sch.upper())
- return netloc, port
- def escape(u):
- """Escape a string in an OAuth-compatible fashion.
- TODO: verify whether this can in fact be used for OAuth 2
- """
- if not isinstance(u, unicode_type):
- raise ValueError('Only unicode objects are escapable.')
- return quote(u.encode('utf-8'), safe=b'~')
- def generate_age(issue_time):
- """Generate a age parameter for MAC authentication draft 00."""
- td = datetime.datetime.now() - issue_time
- age = (td.microseconds + (td.seconds + td.days * 24 * 3600)
- * 10 ** 6) / 10 ** 6
- return unicode_type(age)
- def is_secure_transport(uri):
- """Check if the uri is over ssl."""
- if os.environ.get('OAUTHLIB_INSECURE_TRANSPORT'):
- return True
- return uri.lower().startswith('https://')
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