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Diffstat (limited to 'misc/openlayers/examples/proxy.cgi')
-rwxr-xr-x | misc/openlayers/examples/proxy.cgi | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/misc/openlayers/examples/proxy.cgi b/misc/openlayers/examples/proxy.cgi new file mode 100755 index 0000000..1d2818f --- /dev/null +++ b/misc/openlayers/examples/proxy.cgi @@ -0,0 +1,81 @@ +#!/usr/bin/env python + + +"""This is a blind proxy that we use to get around browser +restrictions that prevent the Javascript from loading pages not on the +same server as the Javascript. This has several problems: it's less +efficient, it might break some sites, and it's a security risk because +people can use this proxy to browse the web and possibly do bad stuff +with it. It only loads pages via http and https, but it can load any +content type. It supports GET and POST requests.""" + +import urllib2 +import cgi +import sys, os + +# Designed to prevent Open Proxy type stuff. + +allowedHosts = ['www.openlayers.org', 'openlayers.org', + 'labs.metacarta.com', 'world.freemap.in', + 'prototype.openmnnd.org', 'geo.openplans.org', + 'sigma.openplans.org', 'demo.opengeo.org', + 'www.openstreetmap.org', 'sample.azavea.com', + 'v2.suite.opengeo.org', 'v-swe.uni-muenster.de:8080', + 'vmap0.tiles.osgeo.org', 'www.openrouteservice.org', + 'maps.wien.gv.at'] + +method = os.environ["REQUEST_METHOD"] + +if method == "POST": + qs = os.environ["QUERY_STRING"] + d = cgi.parse_qs(qs) + if d.has_key("url"): + url = d["url"][0] + else: + url = "http://www.openlayers.org" +else: + fs = cgi.FieldStorage() + url = fs.getvalue('url', "http://www.openlayers.org") + +try: + host = url.split("/")[2] + if allowedHosts and not host in allowedHosts: + print "Status: 502 Bad Gateway" + print "Content-Type: text/plain" + print + print "This proxy does not allow you to access that location (%s)." % (host,) + print + print os.environ + + elif url.startswith("http://") or url.startswith("https://"): + + if method == "POST": + length = int(os.environ["CONTENT_LENGTH"]) + headers = {"Content-Type": os.environ["CONTENT_TYPE"]} + body = sys.stdin.read(length) + r = urllib2.Request(url, body, headers) + y = urllib2.urlopen(r) + else: + y = urllib2.urlopen(url) + + # print content type header + i = y.info() + if i.has_key("Content-Type"): + print "Content-Type: %s" % (i["Content-Type"]) + else: + print "Content-Type: text/plain" + print + + print y.read() + + y.close() + else: + print "Content-Type: text/plain" + print + print "Illegal request." + +except Exception, E: + print "Status: 500 Unexpected Error" + print "Content-Type: text/plain" + print + print "Some unexpected error occurred. Error text was:", E |