corp-image.py - mozsearch

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import json

import base64

# A 1x1 PNG image.

# Source: https://commons.wikimedia.org/wiki/File:1x1.png (Public Domain)

IMAGE = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEUAAACnej3aAAAAAXRSTlMAQObYZgAAAApJREFUCNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII="

def main(request, response):

    response.headers.set(b'Access-Control-Allow-Origin', b'*')

    response.headers.set(b'Access-Control-Allow-Methods', b'OPTIONS, GET, POST')

    response.headers.set(b'Access-Control-Allow-Headers', b'Content-Type')

    # CORS preflight

    if request.method == u'OPTIONS':

        return u''

    if b'true' == request.GET.get(b'revalidate', None):

        response.headers.set(b'Cache-Control', b'max-age=0, must-revalidate')

    else:

        response.headers.set(b'Cache-Control', b'max-age=3600');

    if b'some-etag' == request.headers.get(b'If-None-Match', None):

        response.status = 304

        return u''

    if request.GET.get(b'corp-cross-origin', None):

        response.headers.set(b'Cross-Origin-Resource-Policy', b'cross-origin')

    response.headers.set(b'Etag', b'some-etag')

    response.headers.set(b'Content-Type', b'image/png')

    return base64.b64decode(IMAGE)