Validating facebook and twitter accounts.

closes #28

Validating facebook and twitter accounts.
closes #28
Sergio Oliveira
1 parent 904e05d4
Showing 3 changed files with 44 additions and 1 deletions Show diff stats
src/accounts/forms.py
src/accounts/utils/__init__.py
src/accounts/utils/validators.py
@@ -5,11 +5,24 @@ from django.contrib.auth import get_user_model
 from django.utils.translation import ugettext_lazy as _
  
 from super_archives.models import MailingList
-
+from .utils.validators import validate_social_account
  
 User = get_user_model()
  
  
+class SocialAccountField(forms.Field):
+    def __init__(self, *args, **kwargs):
+        self.url = kwargs.pop('url', None)
+        super(SocialAccountField, self).__init__(*args, **kwargs)
+
+    def validate(self, value):
+        super(SocialAccountField, self).validate(value)
+
+        if value and not validate_social_account(value, self.url):
+            raise forms.ValidationError(_('Social account does not exist'),
+                                        code='social-account-doesnot-exist')
+
+
 class UserForm(forms.ModelForm):
     required = ('first_name', 'last_name', 'email', 'username')
  
@@ -34,12 +47,16 @@ class UserCreationForm(UserForm):
  
  
 class UserUpdateForm(UserForm):
+
     class Meta:
         model = User
         fields = ('username', 'first_name', 'last_name',
                   'institution', 'role', 'twitter', 'facebook',
                   'google_talk', 'webpage')
  
+    twitter = SocialAccountField(url='https://twitter.com/', required=False)
+    facebook = SocialAccountField(url='https://graph.facebook.com/', required=False)
+
  
 class ListsForm(forms.Form):
     LISTS_NAMES = ((list.name, list.name) for list in MailingList.objects.all())
@@ -0,0 +1,26 @@
+
+import urllib2
+import urlparse
+
+
+def validate_social_account(account, url):
+    """Verifies if a social account is valid.
+
+    Examples:
+
+    >>> validate_social_account('seocam', 'http://twitter.com')
+    True
+
+    >>> validate_social_account('seocam-fake-should-fail', 'http://twitter.com')
+    False
+    """
+
+    request = urllib2.Request(urlparse.urljoin(url, account))
+    request.get_method = lambda: 'HEAD'
+
+    try:
+        response = urllib2.urlopen(request)
+    except urllib2.HTTPError:
+        return False
+
+    return response.code == 200
...	...	@@ -5,11 +5,24 @@ from django.contrib.auth import get_user_model
5	5	from django.utils.translation import ugettext_lazy as _
6	6
7	7	from super_archives.models import MailingList
8		-
	8	+from .utils.validators import validate_social_account
9	9
10	10	User = get_user_model()
11	11
12	12
	13	+class SocialAccountField(forms.Field):
	14	+ def __init__(self, args, *kwargs):
	15	+ self.url = kwargs.pop('url', None)
	16	+ super(SocialAccountField, self).__init__(args, *kwargs)
	17	+
	18	+ def validate(self, value):
	19	+ super(SocialAccountField, self).validate(value)
	20	+
	21	+ if value and not validate_social_account(value, self.url):
	22	+ raise forms.ValidationError(_('Social account does not exist'),
	23	+ code='social-account-doesnot-exist')
	24	+
	25	+
13	26	class UserForm(forms.ModelForm):
14	27	required = ('first_name', 'last_name', 'email', 'username')
15	28
...	...	@@ -34,12 +47,16 @@ class UserCreationForm(UserForm):
34	47
35	48
36	49	class UserUpdateForm(UserForm):
	50	+
37	51	class Meta:
38	52	model = User
39	53	fields = ('username', 'first_name', 'last_name',
40	54	'institution', 'role', 'twitter', 'facebook',
41	55	'google_talk', 'webpage')
42	56
	57	+ twitter = SocialAccountField(url='https://twitter.com/', required=False)
	58	+ facebook = SocialAccountField(url='https://graph.facebook.com/', required=False)
	59	+
43	60
44	61	class ListsForm(forms.Form):
45	62	LISTS_NAMES = ((list.name, list.name) for list in MailingList.objects.all())
...	...
...	...	@@ -0,0 +1,26 @@
	1	+
	2	+import urllib2
	3	+import urlparse
	4	+
	5	+
	6	+def validate_social_account(account, url):
	7	+ """Verifies if a social account is valid.
	8	+
	9	+ Examples:
	10	+
	11	+ >>> validate_social_account('seocam', 'http://twitter.com')
	12	+ True
	13	+
	14	+ >>> validate_social_account('seocam-fake-should-fail', 'http://twitter.com')
	15	+ False
	16	+ """
	17	+
	18	+ request = urllib2.Request(urlparse.urljoin(url, account))
	19	+ request.get_method = lambda: 'HEAD'
	20	+
	21	+ try:
	22	+ response = urllib2.urlopen(request)
	23	+ except urllib2.HTTPError:
	24	+ return False
	25	+
	26	+ return response.code == 200
...	...