From 5cb9d1943a462b8a8f34a33f9b99547384623609 Mon Sep 17 00:00:00 2001
From: Hidden Z <hiddenz@mail.i2p>
Date: Wed, 13 Oct 2010 17:24:32 +0000
Subject: [PATCH] web/postkey/views.py: avoid adding non-unique hashes

---
 web/postkey/views.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/web/postkey/views.py b/web/postkey/views.py
index 4a92a0f..6345f8b 100644
--- a/web/postkey/views.py
+++ b/web/postkey/views.py
@@ -64,6 +64,10 @@ class AddForm(ModelForm):
 		# base64-i2p
 		if re.match(r'[a-zA-Z0-9\-~]+AAAA$', data) == None:
 			raise forms.ValidationError('Invalid base64 hash')
+		# Avoid adding non-unique hashes
+		qs = i2phost.objects.filter(b64hash=data)
+		if qs.exists():
+			raise forms.ValidationError('Base64 hash must be unique')
 		return data
 
 def addkey(request):