# Path: oauth_provider/compat.py
# AUTH_USER_MODEL = settings.AUTH_USER_MODEL
# class UnsafeRedirect(HttpResponse):
#     def __init__(self, target_url, *args, **kwargs):
# 
# Path: oauth_provider/utils.py
# def check_valid_callback(callback):
#     """
#     Checks the size and nature of the callback.
#     """
#     callback_url = urlparse(callback)
#     return (callback_url.scheme and
#             callback_url.hostname not in OAUTH_BLACKLISTED_HOSTNAMES and
#             len(callback) < MAX_URL_LENGTH)


import uuid
import urllib.request, urllib.parse, urllib.error
import urllib.parse
import oauth2 as oauth
from datetime import datetime
from time import time
from Crypto.PublicKey import RSA
from django.db import models
from oauth_provider.compat import AUTH_USER_MODEL, get_random_string
from oauth_provider.managers import TokenManager
from oauth_provider.consts import KEY_SIZE, RSA_SECRET_SIZE, CONSUMER_KEY_SIZE, CONSUMER_STATES,\
    PENDING, VERIFIER_SIZE, MAX_URL_LENGTH, OUT_OF_BAND, REGULAR_SECRET_SIZE
from oauth_provider.utils import check_valid_callback
            self.secret = get_random_string(length=REGULAR_SECRET_SIZE)
        self.save()

    def get_callback_url(self, args=None):
        """
        OAuth 1.0a, append the oauth_verifier.
        """
        if self.callback and self.verifier:
            parts = urllib.parse.urlparse(self.callback)
            scheme, netloc, path, params, query, fragment = parts[:6]
            if query:
                query = '%s&oauth_verifier=%s' % (query, self.verifier)
            else:
                query = 'oauth_verifier=%s' % self.verifier

            # workaround for non-http scheme urlparse problem in py2.6 (issue
            # #2)
            if "?" in path:
                query = "%s&%s" % (path.split("?")[-1], query)
                path = "?".join(path[:-1])

            if args is not None:
                query += "&%s" % urllib.parse.urlencode(args)
            return urllib.parse.urlunparse((scheme, netloc, path, params,
                                        query, fragment))
        args = args is not None and "?%s" % urllib.parse.urlencode(args) or ""
        return self.callback and self.callback + args

    def set_callback(self, callback):
        if callback != OUT_OF_BAND:  # out of band, says "we can't do this!"

# Path: oauth_provider/compat.py
# AUTH_USER_MODEL = settings.AUTH_USER_MODEL
# class UnsafeRedirect(HttpResponse):
#     def __init__(self, target_url, *args, **kwargs):
# 
# Path: oauth_provider/utils.py
# def check_valid_callback(callback):
#     """
#     Checks the size and nature of the callback.
#     """
#     callback_url = urlparse(callback)
#     return (callback_url.scheme and
#             callback_url.hostname not in OAUTH_BLACKLISTED_HOSTNAMES and
#             len(callback) < MAX_URL_LENGTH)


# Path: oauth_provider/models.py
import uuid
import urllib.request, urllib.parse, urllib.error
import urllib.parse
import oauth2 as oauth
from datetime import datetime
from time import time
from Crypto.PublicKey import RSA
from django.db import models
from oauth_provider.compat import AUTH_USER_MODEL, get_random_string
from oauth_provider.managers import TokenManager
from oauth_provider.consts import KEY_SIZE, RSA_SECRET_SIZE, CONSUMER_KEY_SIZE, CONSUMER_STATES,\
    PENDING, VERIFIER_SIZE, MAX_URL_LENGTH, OUT_OF_BAND, REGULAR_SECRET_SIZE
from oauth_provider.utils import check_valid_callback

            self.secret = get_random_string(length=REGULAR_SECRET_SIZE)
        self.save()

    def get_callback_url(self, args=None):
        """
        OAuth 1.0a, append the oauth_verifier.
        """
        if self.callback and self.verifier:
            parts = urllib.parse.urlparse(self.callback)
            scheme, netloc, path, params, query, fragment = parts[:6]
            if query:
                query = '%s&oauth_verifier=%s' % (query, self.verifier)
            else:
                query = 'oauth_verifier=%s' % self.verifier

            # workaround for non-http scheme urlparse problem in py2.6 (issue
            # #2)
            if "?" in path:
                query = "%s&%s" % (path.split("?")[-1], query)
                path = "?".join(path[:-1])

            if args is not None:
                query += "&%s" % urllib.parse.urlencode(args)
            return urllib.parse.urlunparse((scheme, netloc, path, params,
                                        query, fragment))
        args = args is not None and "?%s" % urllib.parse.urlencode(args) or ""
        return self.callback and self.callback + args

    def set_callback(self, callback):
        if callback != OUT_OF_BAND:  # out of band, says "we can't do this!"

            if check_valid_callback(callback):