794440750c
Uses the WMTS server of the ogdwien open data initiative of the City of Vienna. Shows how to build a fullscreen map that works well on both mobile and desktop clients. With lightweight permalinks and Geolocate control.
82 lines
2.6 KiB
Python
Executable File
82 lines
2.6 KiB
Python
Executable File
#!/usr/bin/env 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']
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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.openlayers.org"
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else:
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fs = cgi.FieldStorage()
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url = fs.getvalue('url', "http://www.openlayers.org")
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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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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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