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@@ -1,6 +1,8 @@
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 import BeautifulSoup
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 import feedgenerator
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 import functools
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+import hashlib
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+import logging
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 import os
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 import uuid
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 import urllib
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@@ -185,6 +187,14 @@ class BaseRequestHandler(webapp.RequestHandler):
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         if img:
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             return {"url": img["src"]}
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         return None
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+
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+    def generate_sup_id(self, url=None):
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+        return hashlib.md5(url or self.request.url).hexdigest()[:10]
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+
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+    def set_sup_id_header(self):
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+        sup_id = self.generate_sup_id()
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+        self.response.headers["X-SUP-ID"] = \
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+            "http://friendfeed.com/api/public-sup.json#%s" % sup_id
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     def render_feed(self, entries):
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         f = MediaRSSFeed(
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@@ -205,6 +215,7 @@ class BaseRequestHandler(webapp.RequestHandler):
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             )
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         data = f.writeString("utf-8")
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         self.response.headers["Content-Type"] = "application/atom+xml"
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+        self.set_sup_id_header()
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         self.response.out.write(data)
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     def render_json(self, entries):
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@@ -241,13 +252,19 @@ class BaseRequestHandler(webapp.RequestHandler):
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         self.response.out.write(template.render(path, extra_context))
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     def ping(self, entry=None):
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+        feed = "http://" + self.request.host + "/?format=atom"
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         args = urllib.urlencode({
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             "name": TITLE,
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             "url": "http://" + self.request.host + "/",
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-            "changesURL": "http://" + self.request.host + "/?format=atom",
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+            "changesURL": feed,
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         })
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         response = urlfetch.fetch("http://blogsearch.google.com/ping?" + args)
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-        return response.status_code
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+        args = urllib.urlencode({
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+            "url": feed,
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+            "supid": self.generate_sup_id(feed),
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+        })
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+        response = urlfetch.fetch("http://friendfeed.com/api/public-sup-ping?" \
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+            + args)
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     def is_valid_xhtml(self, entry):
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         args = urllib.urlencode({
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@@ -315,6 +332,10 @@ class FeedRedirectHandler(BaseRequestHandler):
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 class MainPageHandler(BaseRequestHandler):
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+    def head(self):
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+        if self.request.get("format", None) == "atom":
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+            self.set_sup_id_header()
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+
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     def get(self):
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         offset = self.get_integer_argument("start", 0)
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         if not offset:
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@@ -428,6 +449,7 @@ application = webapp.WSGIApplication([
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 ], debug=True)
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 def main():
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+    logging.getLogger().setLevel(logging.DEBUG)
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     run_wsgi_app(application)
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 if __name__ == "__main__":