#!/Python27/python
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"""This is a blind proxy that we use to get around browser
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restrictions that prevent the Javascript from loading pages not on the
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same server as the Javascript. This has several problems: it's less
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efficient, it might break some sites, and it's a security risk because
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people can use this proxy to browse the web and possibly do bad stuff
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with it. It only loads pages via http and https, but it can load any
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content type. It supports GET and POST requests."""
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import urllib2
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import cgi
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import sys, os
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# Designed to prevent Open Proxy type stuff.
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allowedHosts = ['www.openlayers.org', 'openlayers.org',
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'labs.metacarta.com', 'world.freemap.in',
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'prototype.openmnnd.org', 'geo.openplans.org',
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'sigma.openplans.org', 'demo.opengeo.org',
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'www.openstreetmap.org', 'sample.azavea.com',
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'v2.suite.opengeo.org', 'v-swe.uni-muenster.de:8080',
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'vmap0.tiles.osgeo.org', 'www.openrouteservice.org',
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'maps.wien.gv.at','www.ximple.com.tw','www.ximple.com.tw:80','ximple.com.tw',
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'localhost','localhost:8080','localhost:8082']
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method = os.environ["REQUEST_METHOD"]
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if method == "POST":
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qs = os.environ["QUERY_STRING"]
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d = cgi.parse_qs(qs)
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if d.has_key("url"):
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url = d["url"][0]
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else:
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url = "http://www.ximple.com.tw"
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print url
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else:
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fs = cgi.FieldStorage()
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url = fs.getvalue('url', "http://www.ximple.com.tw")
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try:
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host = url.split("/")[2]
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if allowedHosts and not host in allowedHosts:
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print "Status: 502 Bad Gateway"
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print "Content-Type: text/plain"
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print
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print "This proxy does not allow you to access that location (%s)." % (host,)
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print
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print os.environ
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elif url.startswith("http://") or url.startswith("https://"):
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if method == "POST":
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length = int(os.environ["CONTENT_LENGTH"])
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headers = {"Content-Type": os.environ["CONTENT_TYPE"]}
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body = sys.stdin.read(length)
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if os.environ["HTTP_AUTHORIZATION"].__len__()>0:
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headers =headers["Authorization"]=os.environ["HTTP_AUTHORIZATION"]
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r = urllib2.Request(url, body, headers)
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y = urllib2.urlopen(r)
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else:
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y = urllib2.urlopen(url)
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# print content type header
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i = y.info()
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if i.has_key("Content-Type"):
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print "Content-Type: %s" % (i["Content-Type"])
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else:
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print "Content-Type: text/plain"
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print
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print y.read()
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y.close()
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else:
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print "Content-Type: text/plain"
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print
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print "Illegal request."
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except Exception, E:
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print "Status: 500 Unexpected Error"
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print "Content-Type: text/plain"
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print
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print "Some unexpected error occurred. Error text was:", E
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