move piston out to requirements

[wolnelektury.git] / apps / piston / forms.py

diff --git a/apps/piston/forms.py b/apps/piston/forms.py
deleted file mode 100644 (file)
index 351df7c..0000000
--- a/apps/piston/forms.py
+++ /dev/null
@@ -1,62 +0,0 @@
-import hmac, base64
-
-from django import forms
-from django.conf import settings
-
-class Form(forms.Form):
-    pass
-    
-class ModelForm(forms.ModelForm):
-    """
-    Subclass of `forms.ModelForm` which makes sure
-    that the initial values are present in the form
-    data, so you don't have to send all old values
-    for the form to actually validate. Django does not
-    do this on its own, which is really annoying.
-    """
-    def merge_from_initial(self):
-        self.data._mutable = True
-        filt = lambda v: v not in self.data.keys()
-        for field in filter(filt, getattr(self.Meta, 'fields', ())):
-            self.data[field] = self.initial.get(field, None)
-
-
-class OAuthAuthenticationForm(forms.Form):
-    oauth_token = forms.CharField(widget=forms.HiddenInput)
-    oauth_callback = forms.CharField(widget=forms.HiddenInput, required=False)
-    authorize_access = forms.BooleanField(required=True)
-    csrf_signature = forms.CharField(widget=forms.HiddenInput)
-
-    def __init__(self, *args, **kwargs):
-        forms.Form.__init__(self, *args, **kwargs)
-
-        self.fields['csrf_signature'].initial = self.initial_csrf_signature
-
-    def clean_csrf_signature(self):
-        sig = self.cleaned_data['csrf_signature']
-        token = self.cleaned_data['oauth_token']
-
-        sig1 = OAuthAuthenticationForm.get_csrf_signature(settings.SECRET_KEY, token)
-
-        if sig != sig1:
-            raise forms.ValidationError("CSRF signature is not valid")
-
-        return sig
-
-    def initial_csrf_signature(self):
-        token = self.initial['oauth_token']
-        return OAuthAuthenticationForm.get_csrf_signature(settings.SECRET_KEY, token)
-
-    @staticmethod
-    def get_csrf_signature(key, token):
-        # Check signature...
-        try:
-            import hashlib # 2.5
-            hashed = hmac.new(key, token, hashlib.sha1)
-        except:
-            import sha # deprecated
-            hashed = hmac.new(key, token, sha)
-
-        # calculate the digest base 64
-        return base64.b64encode(hashed.digest())
-