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Remove method and content overriding

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This commit is contained in:
Tom Christie 2015-09-17 15:17:29 +01:00
parent a67eed1466
commit 566812ac0b
10 changed files with 180 additions and 241 deletions
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38
rest_framework/renderers.py
View File

@ -420,9 +420,6 @@ class BrowsableAPIRenderer(BaseRenderer):
if method not in view.allowed_methods:
return # Not a valid method
if not api_settings.FORM_METHOD_OVERRIDE:
return # Cannot use form overloading
try:
view.check_permissions(request)
if obj is not None:
@ -530,13 +527,6 @@ class BrowsableAPIRenderer(BaseRenderer):
instance = None
with override_method(view, request, method) as request:
# If we're not using content overloading there's no point in
# supplying a generic form, as the view won't treat the form's
# value as the content of the request.
if not (api_settings.FORM_CONTENT_OVERRIDE and
api_settings.FORM_CONTENTTYPE_OVERRIDE):
return None
# Check permissions
if not self.show_form_for_method(view, method, request, instance):
return
@ -564,28 +554,22 @@ class BrowsableAPIRenderer(BaseRenderer):
# Generate a generic form that includes a content type field,
# and a content field.
content_type_field = api_settings.FORM_CONTENTTYPE_OVERRIDE
content_field = api_settings.FORM_CONTENT_OVERRIDE
media_types = [parser.media_type for parser in view.parser_classes]
choices = [(media_type, media_type) for media_type in media_types]
initial = media_types[0]
# NB. http://jacobian.org/writing/dynamic-form-generation/
class GenericContentForm(forms.Form):
def __init__(self):
super(GenericContentForm, self).__init__()
self.fields[content_type_field] = forms.ChoiceField(
label='Media type',
choices=choices,
initial=initial
)
self.fields[content_field] = forms.CharField(
label='Content',
widget=forms.Textarea,
initial=content
)
_content_type = forms.ChoiceField(
label='Media type',
choices=choices,
initial=initial,
widget=forms.Select(attrs={'data-override': 'content-type'})
)
_content = forms.CharField(
label='Content',
widget=forms.Textarea(attrs={'data-override': 'content'}),
initial=content
)
return GenericContentForm()

98
rest_framework/request.py
View File

@ -129,11 +129,6 @@ class Request(object):
- authentication_classes(list/tuple). The authentications used to try
authenticating the request's user.
"""
_METHOD_PARAM = api_settings.FORM_METHOD_OVERRIDE
_CONTENT_PARAM = api_settings.FORM_CONTENT_OVERRIDE
_CONTENTTYPE_PARAM = api_settings.FORM_CONTENTTYPE_OVERRIDE
def __init__(self, request, parsers=None, authenticators=None,
negotiator=None, parser_context=None):
self._request = request
@ -162,30 +157,10 @@ class Request(object):
def _default_negotiator(self):
return api_settings.DEFAULT_CONTENT_NEGOTIATION_CLASS()
@property
def method(self):
"""
Returns the HTTP method.
This allows the `method` to be overridden by using a hidden `form`
field on a form POST request.
"""
if not _hasattr(self, '_method'):
self._load_method_and_content_type()
return self._method
@property
def content_type(self):
"""
Returns the content type header.
This should be used instead of `request.META.get('HTTP_CONTENT_TYPE')`,
as it allows the content type to be overridden by using a hidden form
field on a form POST request.
"""
if not _hasattr(self, '_content_type'):
self._load_method_and_content_type()
return self._content_type
meta = self._request.META
return meta.get('CONTENT_TYPE', meta.get('HTTP_CONTENT_TYPE', ''))
@property
def stream(self):
@ -265,9 +240,6 @@ class Request(object):
"""
Parses the request content into `self.data`.
"""
if not _hasattr(self, '_content_type'):
self._load_method_and_content_type()
if not _hasattr(self, '_data'):
self._data, self._files = self._parse()
if self._files:
@ -276,32 +248,14 @@ class Request(object):
else:
self._full_data = self._data
def _load_method_and_content_type(self):
"""
Sets the method and content_type, and then check if they've
been overridden.
"""
self._content_type = self.META.get('HTTP_CONTENT_TYPE',
self.META.get('CONTENT_TYPE', ''))
self._perform_form_overloading()
if not _hasattr(self, '_method'):
self._method = self._request.method
# Allow X-HTTP-METHOD-OVERRIDE header
if 'HTTP_X_HTTP_METHOD_OVERRIDE' in self.META:
self._method = self.META['HTTP_X_HTTP_METHOD_OVERRIDE'].upper()
def _load_stream(self):
"""
Return the content body of the request, as a stream.
"""
meta = self._request.META
try:
content_length = int(
self.META.get(
'CONTENT_LENGTH', self.META.get('HTTP_CONTENT_LENGTH')
)
meta.get('CONTENT_LENGTH', meta.get('HTTP_CONTENT_LENGTH', 0))
)
except (ValueError, TypeError):
content_length = 0
@ -313,50 +267,6 @@ class Request(object):
else:
self._stream = six.BytesIO(self.raw_post_data)
def _perform_form_overloading(self):
"""
If this is a form POST request, then we need to check if the method and
content/content_type have been overridden by setting them in hidden
form fields or not.
"""
USE_FORM_OVERLOADING = (
self._METHOD_PARAM or
(self._CONTENT_PARAM and self._CONTENTTYPE_PARAM)
)
# We only need to use form overloading on form POST requests.
if (
self._request.method != 'POST' or
not USE_FORM_OVERLOADING or
not is_form_media_type(self._content_type)
):
return
# At this point we're committed to parsing the request as form data.
self._data = self._request.POST
self._files = self._request.FILES
self._full_data = self._data.copy()
self._full_data.update(self._files)
# Method overloading - change the method and remove the param from the content.
if (
self._METHOD_PARAM and
self._METHOD_PARAM in self._data
):
self._method = self._data[self._METHOD_PARAM].upper()
# Content overloading - modify the content type, and force re-parse.
if (
self._CONTENT_PARAM and
self._CONTENTTYPE_PARAM and
self._CONTENT_PARAM in self._data and
self._CONTENTTYPE_PARAM in self._data
):
self._content_type = self._data[self._CONTENTTYPE_PARAM]
self._stream = six.BytesIO(self._data[self._CONTENT_PARAM].encode(self.parser_context['encoding']))
self._data, self._files, self._full_data = (Empty, Empty, Empty)
def _parse(self):
"""
Parse the request content, returning a two-tuple of (data, files)

3
rest_framework/settings.py
View File

@ -94,9 +94,6 @@ DEFAULTS = {
'TEST_REQUEST_DEFAULT_FORMAT': 'multipart',
# Browser enhancements
'FORM_METHOD_OVERRIDE': '_method',
'FORM_CONTENT_OVERRIDE': '_content',
'FORM_CONTENTTYPE_OVERRIDE': '_content_type',
'URL_ACCEPT_OVERRIDE': 'accept',
'URL_FORMAT_OVERRIDE': 'format',

97
rest_framework/static/rest_framework/js/ajax-form.js Normal file
View File

@ -0,0 +1,97 @@
function replaceDocument(docString) {
var doc = document.open("text/html");
doc.write(docString);
doc.close();
}
function doAjaxSubmit(e) {
var form = $(this);
var btn = $(this.clk);
var method = btn.data('method') || form.data('method') || form.attr('method') || 'GET';
method = method.toUpperCase()
if (method === 'GET') {
// GET requests can always use standard form submits.
return;
}
var contentType =
form.find('input[data-override="content-type"]').val() ||
form.find('select[data-override="content-type"] option:selected').text();
if (method === 'POST' && !contentType) {
// POST requests can use standard form submits, unless we have
// overridden the content type.
return;
}
// At this point we need to make an AJAX form submission.
e.preventDefault();
var url = form.attr('action');
var data;
if (contentType) {
data = form.find('[data-override="content"]').val() || ''
} else {
contentType = form.attr('enctype') || form.attr('encoding')
if (contentType === 'multipart/form-data') {
if (!window.FormData) {
alert('Your browser does not support AJAX multipart form submissions');
return;
}
// Use the FormData API and allow the content type to be set automatically,
// so it includes the boundary string.
// See https://developer.mozilla.org/en-US/docs/Web/API/FormData/Using_FormData_Objects
contentType = false;
data = new FormData(form[0]);
} else {
contentType = 'application/x-www-form-urlencoded; charset=UTF-8'
data = form.serialize();
}
}
var ret = $.ajax({
url: url,
method: method,
data: data,
contentType: contentType,
processData: false,
headers: {'Accept': 'text/html; q=1.0, */*'},
});
ret.always(function(data, textStatus, jqXHR) {
if (textStatus != 'success') {
jqXHR = data;
}
var responseContentType = jqXHR.getResponseHeader("content-type") || "";
if (responseContentType.toLowerCase().indexOf('text/html') === 0) {
replaceDocument(jqXHR.responseText);
try {
// Modify the location and scroll to top, as if after page load.
history.replaceState({}, '', url);
scroll(0,0);
} catch(err) {
// History API not supported, so redirect.
window.location = url;
}
} else {
// Not HTML content. We can't open this directly, so redirect.
window.location = url;
}
});
return ret;
}
function captureSubmittingElement(e) {
var target = e.target;
var form = this;
form.clk = target;
}
$.fn.ajaxForm = function() {
var options = {}
return this
.unbind('submit.form-plugin click.form-plugin')
.bind('submit.form-plugin', options, doAjaxSubmit)
.bind('click.form-plugin', options, captureSubmittingElement);
};

47
rest_framework/static/rest_framework/js/csrf.js Normal file
View File

@ -0,0 +1,47 @@
function getCookie(name) {
var cookieValue = null;
if (document.cookie && document.cookie != '') {
var cookies = document.cookie.split(';');
for (var i = 0; i < cookies.length; i++) {
var cookie = jQuery.trim(cookies[i]);
// Does this cookie string begin with the name we want?
if (cookie.substring(0, name.length + 1) == (name + '=')) {
cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
break;
}
}
}
return cookieValue;
}
function csrfSafeMethod(method) {
// these HTTP methods do not require CSRF protection
return (/^(GET|HEAD|OPTIONS|TRACE)$/.test(method));
}
function sameOrigin(url) {
// test that a given url is a same-origin URL
// url could be relative or scheme relative or absolute
var host = document.location.host; // host + port
var protocol = document.location.protocol;
var sr_origin = '//' + host;
var origin = protocol + sr_origin;
// Allow absolute or scheme relative URLs to same origin
return (url == origin || url.slice(0, origin.length + 1) == origin + '/') ||
(url == sr_origin || url.slice(0, sr_origin.length + 1) == sr_origin + '/') ||
// or any other URL that isn't scheme relative or absolute i.e relative.
!(/^(\/\/|http:|https:).*/.test(url));
}
var csrftoken = getCookie('csrftoken');
$.ajaxSetup({
beforeSend: function(xhr, settings) {
if (!csrfSafeMethod(settings.type) && sameOrigin(settings.url)) {
// Send the token to same-origin, relative URLs only.
// Send the token only if the method warrants CSRF protection
// Using the CSRFToken value acquired earlier
xhr.setRequestHeader("X-CSRFToken", csrftoken);
}
}
});

5
rest_framework/static/rest_framework/js/jquery-1.11.3.min.js vendored Normal file
View File

File diff suppressed because one or more lines are too long

29
rest_framework/templates/rest_framework/base.html
View File

@ -94,17 +94,13 @@
{% endif %}
{% if options_form %}
<form class="button-form" action="{{ request.get_full_path }}" method="POST">
{% csrf_token %}
<input type="hidden" name="{{ api_settings.FORM_METHOD_OVERRIDE }}" value="OPTIONS" />
<form class="button-form" action="{{ request.get_full_path }}" data-method="OPTIONS">
<button class="btn btn-primary js-tooltip" title="Make an OPTIONS request on the {{ name }} resource">OPTIONS</button>
</form>
{% endif %}
{% if delete_form %}
<form class="button-form" action="{{ request.get_full_path }}" method="POST">
{% csrf_token %}
<input type="hidden" name="{{ api_settings.FORM_METHOD_OVERRIDE }}" value="DELETE" />
<form class="button-form" action="{{ request.get_full_path }}" data-method="DELETE">
<button class="btn btn-danger js-tooltip" title="Make a DELETE request on the {{ name }} resource">DELETE</button>
</form>
{% endif %}
@ -168,7 +164,7 @@
</div>
{% endif %}
<div {% if post_form %}class="tab-pane"{% endif %} id="post-generic-content-form">
<div {% if raw_data_post_form %}class="tab-pane"{% endif %} id="post-generic-content-form">
{% with form=raw_data_post_form %}
<form action="{{ request.get_full_path }}" method="POST" class="form-horizontal">
<fieldset>
@ -200,11 +196,11 @@
<div class="well tab-content">
{% if put_form %}
<div class="tab-pane" id="put-object-form">
<form action="{{ request.get_full_path }}" method="POST" enctype="multipart/form-data" class="form-horizontal" novalidate>
<form action="{{ request.get_full_path }}" data-method="PUT" enctype="multipart/form-data" class="form-horizontal" novalidate>
<fieldset>
{{ put_form }}
<div class="form-actions">
<button class="btn btn-primary js-tooltip" name="{{ api_settings.FORM_METHOD_OVERRIDE }}" value="PUT" title="Make a PUT request on the {{ name }} resource">PUT</button>
<button class="btn btn-primary js-tooltip" title="Make a PUT request on the {{ name }} resource">PUT</button>
</div>
</fieldset>
</form>
@ -213,15 +209,15 @@
<div {% if put_form %}class="tab-pane"{% endif %} id="put-generic-content-form">
{% with form=raw_data_put_or_patch_form %}
<form action="{{ request.get_full_path }}" method="POST" class="form-horizontal">
<form action="{{ request.get_full_path }}" data-method="PUT" class="form-horizontal">
<fieldset>
{% include "rest_framework/raw_data_form.html" %}
<div class="form-actions">
{% if raw_data_put_form %}
<button class="btn btn-primary js-tooltip" name="{{ api_settings.FORM_METHOD_OVERRIDE }}" value="PUT" title="Make a PUT request on the {{ name }} resource">PUT</button>
<button class="btn btn-primary js-tooltip" title="Make a PUT request on the {{ name }} resource">PUT</button>
{% endif %}
{% if raw_data_patch_form %}
<button class="btn btn-primary js-tooltip" name="{{ api_settings.FORM_METHOD_OVERRIDE }}" value="PATCH" title="Make a PATCH request on the {{ name }} resource">PATCH</button>
<button data-method="PATCH" class="btn btn-primary js-tooltip" title="Make a PATCH request on the {{ name }} resource">PATCH</button>
{% endif %}
</div>
</fieldset>
@ -237,10 +233,17 @@
</div><!-- ./wrapper -->
{% block script %}
<script src="{% static "rest_framework/js/jquery-1.8.1-min.js" %}"></script>
<script src="{% static "rest_framework/js/jquery-1.11.3.min.js" %}"></script>
<script src="{% static "rest_framework/js/ajax-form.js" %}"></script>
<script src="{% static "rest_framework/js/csrf.js" %}"></script>
<script src="{% static "rest_framework/js/bootstrap.min.js" %}"></script>
<script src="{% static "rest_framework/js/prettify-min.js" %}"></script>
<script src="{% static "rest_framework/js/default.js" %}"></script>
<script>
$(document).ready(function() {
$('form').ajaxForm();
});
</script>
{% endblock %}
</body>
{% endblock %}

1
rest_framework/templates/rest_framework/raw_data_form.html
View File

@ -1,5 +1,4 @@
{% load rest_framework %}
{% csrf_token %}
{{ form.non_field_errors }}
{% for field in form %}
<div class="form-group">

73
tests/test_request.py
View File

@ -43,36 +43,6 @@ class PlainTextParser(BaseParser):
return stream.read()
class TestMethodOverloading(TestCase):
def test_method(self):
"""
Request methods should be same as underlying request.
"""
request = Request(factory.get('/'))
self.assertEqual(request.method, 'GET')
request = Request(factory.post('/'))
self.assertEqual(request.method, 'POST')
def test_overloaded_method(self):
"""
POST requests can be overloaded to another method by setting a
reserved form field
"""
request = Request(factory.post('/', {api_settings.FORM_METHOD_OVERRIDE: 'DELETE'}))
self.assertEqual(request.method, 'DELETE')
def test_x_http_method_override_header(self):
"""
POST requests can also be overloaded to another method by setting
the X-HTTP-Method-Override header.
"""
request = Request(factory.post('/', {'foo': 'bar'}, HTTP_X_HTTP_METHOD_OVERRIDE='DELETE'))
self.assertEqual(request.method, 'DELETE')
request = Request(factory.get('/', {'foo': 'bar'}, HTTP_X_HTTP_METHOD_OVERRIDE='DELETE'))
self.assertEqual(request.method, 'DELETE')
class TestContentParsing(TestCase):
def test_standard_behaviour_determines_no_content_GET(self):
"""
@ -137,49 +107,6 @@ class TestContentParsing(TestCase):
request.parsers = (PlainTextParser(), )
self.assertEqual(request.data, content)
def test_overloaded_behaviour_allows_content_tunnelling(self):
"""
Ensure request.data returns content for overloaded POST request.
"""
json_data = {'foobar': 'qwerty'}
content = json.dumps(json_data)
content_type = 'application/json'
form_data = {
api_settings.FORM_CONTENT_OVERRIDE: content,
api_settings.FORM_CONTENTTYPE_OVERRIDE: content_type
}
request = Request(factory.post('/', form_data))
request.parsers = (JSONParser(), )
self.assertEqual(request.data, json_data)
def test_form_POST_unicode(self):
"""
JSON POST via default web interface with unicode data
"""
# Note: environ and other variables here have simplified content compared to real Request
CONTENT = b'_content_type=application%2Fjson&_content=%7B%22request%22%3A+4%2C+%22firm%22%3A+1%2C+%22text%22%3A+%22%D0%9F%D1%80%D0%B8%D0%B2%D0%B5%D1%82%21%22%7D'
environ = {
'REQUEST_METHOD': 'POST',
'CONTENT_TYPE': 'application/x-www-form-urlencoded',
'CONTENT_LENGTH': len(CONTENT),
'wsgi.input': BytesIO(CONTENT),
}
wsgi_request = WSGIRequest(environ=environ)
wsgi_request._load_post_and_files()
parsers = (JSONParser(), FormParser(), MultiPartParser())
parser_context = {
'encoding': 'utf-8',
'kwargs': {},
'args': (),
}
request = Request(wsgi_request, parsers=parsers, parser_context=parser_context)
method = request.method
self.assertEqual(method, 'POST')
self.assertEqual(request._content_type, 'application/json')
self.assertEqual(request._stream.getvalue(), b'{"request": 4, "firm": 1, "text": "\xd0\x9f\xd1\x80\xd0\xb8\xd0\xb2\xd0\xb5\xd1\x82!"}')
self.assertEqual(request._data, Empty)
self.assertEqual(request._files, Empty)
class MockView(APIView):
authentication_classes = (SessionAuthentication,)

30
tests/test_views.py
View File

@ -74,21 +74,6 @@ class ClassBasedViewIntegrationTests(TestCase):
self.assertEqual(response.status_code, status.HTTP_400_BAD_REQUEST)
self.assertEqual(sanitise_json_error(response.data), expected)
def test_400_parse_error_tunneled_content(self):
content = 'f00bar'
content_type = 'application/json'
form_data = {
api_settings.FORM_CONTENT_OVERRIDE: content,
api_settings.FORM_CONTENTTYPE_OVERRIDE: content_type
}
request = factory.post('/', form_data)
response = self.view(request)
expected = {
'detail': JSON_ERROR
}
self.assertEqual(response.status_code, status.HTTP_400_BAD_REQUEST)
self.assertEqual(sanitise_json_error(response.data), expected)
class FunctionBasedViewIntegrationTests(TestCase):
def setUp(self):
@ -103,21 +88,6 @@ class FunctionBasedViewIntegrationTests(TestCase):
self.assertEqual(response.status_code, status.HTTP_400_BAD_REQUEST)
self.assertEqual(sanitise_json_error(response.data), expected)
def test_400_parse_error_tunneled_content(self):
content = 'f00bar'
content_type = 'application/json'
form_data = {
api_settings.FORM_CONTENT_OVERRIDE: content,
api_settings.FORM_CONTENTTYPE_OVERRIDE: content_type
}
request = factory.post('/', form_data)
response = self.view(request)
expected = {
'detail': JSON_ERROR
}
self.assertEqual(response.status_code, status.HTTP_400_BAD_REQUEST)
self.assertEqual(sanitise_json_error(response.data), expected)
class TestCustomExceptionHandler(TestCase):
def setUp(self):