3

So, it seems that I can perform this action just fine from the browser, but I can't seem to replicate it via CURL. Any pointers on how this is supposed to work are greatly, greatly appreciated.

I perform this request to log in a user:

curl -X POST -H "Content-Type: application/json" \ 
-d '{"username":"tester", "password":"password"}' --verbose \
http://localhost:8000/api/user/login/

And the response seems to indicate that the request was successful:

* About to connect() to localhost port 8000 (#0)
*   Trying 127.0.0.1... connected
> POST /api/user/login/ HTTP/1.1
> User-Agent: curl/7.22.0 (x86_64-pc-linux-gnu) libcurl/7.22.0 OpenSSL/1.0.1 zlib/1.2.3.4 libidn/1.23 librtmp/2.3
> Host: localhost:8000
> Accept: */*
> Content-Type: application/json
> Content-Length: 44
> 
* upload completely sent off: 44out of 44 bytes
< HTTP/1.1 200 OK
< Server: nginx/1.1.19
< Date: Wed, 11 Dec 2013 12:31:34 GMT
< Content-Type: application/json
< Transfer-Encoding: chunked
< Connection: keep-alive
< Vary: Accept, Cookie
< Set-Cookie: csrftoken=h4tjM6o3QyelsAvUhdqNJPinZRdJyrBz; Path=/
< Set-Cookie: sessionid=4tsny8kcl7j9x7icr6vptnq1ims89tzr; expires=Wed, 25-Dec-2013 12:31:34 GMT; httponly; Max-Age=1209600; Path=/
< 
* Connection #0 to host localhost left intact
* Closing connection #0
{"success": true, "username": "tester"}

If I include only the CSRF token in my authenticated request, I get a 401. However, if I include both the CSRF token and the session ID, I get some kind of Python error. For example:

curl -X GET -H "Content-Type: application/json" -H \
"X-CSRFToken: h4tjM6o3QyelsAvUhdqNJPinZRdJyrBz" --cookie \
"sessionid=4tsny8kcl7j9x7icr6vptnq1ims89tzr" --verbose \
http://localhost:8000/api/user/ | python -mjson.tool \

I get back from the server:

{
    "error_message": "getattr(): attribute name must be string", 
    "traceback": "Traceback (most recent call last):
File \"/opt/phaidra/env/local/lib/python2.7/site-packages/tastypie/resources.py\", line 195, in wrapper\n    response = callback(request, *args, **kwargs)\n\n  
File \"/opt/phaidra/env/local/lib/python2.7/site-packages/tastypie/resources.py\", line 426, in dispatch_list\n    return self.dispatch('list', request, **kwargs)\n\n  
File \"/opt/phaidra/env/local/lib/python2.7/site-packages/tastypie/resources.py\", line 454, in dispatch\n    self.throttle_check(request)\n\n  
File \"/opt/phaidra/env/local/lib/python2.7/site-packages/tastypie/resources.py\", line 551, in throttle_check\n    identifier = self._meta.authentication.get_identifier(request)\n\n  
File \"/opt/phaidra/env/local/lib/python2.7/site-packages/tastypie/authentication.py\", line 515, in get_identifier\n    return request._authentication_backend.get_identifier(request)\n\n  
File \"/opt/phaidra/env/local/lib/python2.7/site-packages/tastypie/authentication.py\", line 283, in get_identifier\n    return getattr(request.user, username_field)\n\n
TypeError: getattr(): attribute name must be string\n"
}

Looking at the lines of the errors is not particularly illuminating. Since this error doesn't occur unless --cookie is used, I'm presuming it's trying incorrectly to parse the cookie parameter.

It should also be noted that I am using Neo4django, which I believe precludes me from being able to use API Key Authentication. The code for my user is as such:

class UserResource(ModelResource):
    class Meta:
        queryset = AppUser.objects.all()
        resource_name = 'user'
        fields = ['first_name', 'last_name', 'username', 'email', 'is_staff']
        allowed_methods = ['get', 'post', 'patch']
        always_return_data = True
        authentication = MultiAuthentication(SessionAuthentication(), BasicAuthentication()) 
        authorization = Authorization()

    def prepend_urls(self):
        params = (self._meta.resource_name, trailing_slash())
        return [
            url(r"^(?P<resource_name>%s)/login%s$" % params, self.wrap_view('login'), name="api_login"),
            url(r"^(?P<resource_name>%s)/logout%s$" % params, self.wrap_view('logout'), name="api_logout")
    ]

    def login(self, request, **kwargs):
        """
        Authenticate a user, create a CSRF token for them, and return the user object as JSON.
        """
        self.method_check(request, allowed=['post'])

        data = self.deserialize(request, request.raw_post_data, format=request.META.get('CONTENT_TYPE', 'application/json'))

        username = data.get('username', '')
        password = data.get('password', '')

        if username == '' or password == '':
            return self.create_response(request, {
                'success': False,
                'error_message': 'Missing username or password'
            })

        user = authenticate(username=username, password=password)

        if user:
            if user.is_active:
                login(request, user)
                response = self.create_response(request, {
                    'success': True,
                    'username': user.username
                })
                response.set_cookie("csrftoken", get_new_csrf_key())
                return response
            else:
                return self.create_response(request, {
                    'success': False,
                    'reason': 'disabled',
                }, HttpForbidden)
        else:
            return self.create_response(request, {
                'success': False,
                'error_message': 'Incorrect username or password'
            })

def read_list(self, object_list, bundle):
        """
        Allow the endpoint for the User Resource to display only the logged in user's information
        """
        self.is_authenticated(request)
        return object_list.filter(pk=bundle.request.user.id)

(You can view the entire contents of the file, if you need, at https://github.com/OpenPhilology/phaidra/blob/master/api/api.py)

So, in summary, the main questions/points of confusion for me:

  1. Which data must be sent via the curl request to send an authenticated GET/POST/etc.?
  2. Is the Authentication value correct for the User Resource?
  3. Am I supposed to be able to authenticate with only the CSRF token, or is the session ID also necessary?

Thanks in advance for any insight on this!

EDIT: Here is the custom user model we have.

from django.contrib.auth import authenticate

from django.db import models as django_models 
from neo4django.db import models
from neo4django.graph_auth.models import User, UserManager


class AppUser(User):
    objects = UserManager()

    USERNAME_FIELD = 'username'

    def __unicode__(self):
        return unicode(self.username) or u'' 
4

2 回答 2

2

这里的问题最终有两个方面:

我发现 Django 函数 get_user_model() 失败了——这在几个地方都使用了——但不是因为 USERNAME_FIELD 是空白的。如果我将这些值硬编码到这个文件中,一切正常。相反,问题在于它失败了,因为 Django 需要一个非常具体的自定义用户模型命名方案。来自 Django 文档:

这个点对描述了 Django 应用程序的名称(必须在您的 INSTALLED_APPS 中),以及您希望用作用户模型的 Django 模型的名称。

https://docs.djangoproject.com/en/dev/topics/auth/customizing/#substituting-a-custom-user-model

然而,这并不是故事的全部。Django 假定您的 AUTH_USER_MODEL 可以被中间的句点分割,这将给它两个变量,“app_label”和“model_name”。看:

def get_user_model():
    "Return the User model that is active in this project"
    from django.conf import settings
    from django.db.models import get_model

    try:
        app_label, model_name = settings.AUTH_USER_MODEL.split('.')
    except ValueError:
        raise ImproperlyConfigured("AUTH_USER_MODEL must be of the form 'app_label.model_name'")
    user_model = get_model(app_label, model_name)
    if user_model is None:
        raise ImproperlyConfigured("AUTH_USER_MODEL refers to model '%s' that has not been installed" % settings.AUTH_USER_MODEL)
    return user_model

(in file: django/contrib/auth/__init__.py)

但是,我的可以通过'from core.models.user import AppUser'访问。我不得不扁平化我的项目结构,所以我有一个名为“app”的应用程序,我的所有模型都在一个名为“models.py”的文件中,然后在 settings.py 中我能够将我的 AUTH_USER_MODEL 设置为“app.AppUser”。

奇怪的是:在许多其他情况下,我能够通过 API 登录,即使我的 APP_USER_MODEL 设置为“core.models.user.AppUser”。只有当我尝试使用 SessionAuth 时,我才遇到问题。

此外,最近对 Neo4Django 的更改也必须升级,因为它们直接处理图形身份验证。以前,backends.py 不是属性导入和尝试使用我的自定义模型。现在确实如此。具体来说,这个文件:

https://github.com/scholrly/neo4django/blob/9058c0b6f4eb9d23c2a87044f0661f8178b80b12/neo4django/graph_auth/backends.py

于 2013-12-13T14:00:59.703 回答
0

您使用的是哪个版本的 Django?如果您使用的是 1.5 或更高版本,您可能会遇到未指定用户名字段名称的问题:

https://github.com/toastdriven/django-tastypie/blob/master/tastypie/compat.py

于 2013-12-11T15:14:53.133 回答