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from pathlib import Path
# General decision logic script. Depending on query parameters, it can
# simulate a variety of network errors, and its scoreAd() and
# reportResult() functions can have arbitrary Javascript code injected
# in them. scoreAd() will by default return a desirability score of
# twice the bid for each ad, as long as the ad URL ends with the uuid.
def main(request, response):
error = request.GET.first(b"error", None)
if error == b"close-connection":
# Close connection without writing anything, to simulate a network
# error. The write call is needed to avoid writing the default headers.
response.writer.write("")
response.close_connection = True
return
if error == b"http-error":
response.status = (404, b"OK")
else:
response.status = (200, b"OK")
if error == b"wrong-content-type":
response.headers.set(b"Content-Type", b"application/json")
elif error != b"no-content-type":
response.headers.set(b"Content-Type", b"application/javascript")
if error == b"bad-allow-fledge":
response.headers.set(b"Ad-Auction-Allowed", b"sometimes")
elif error == b"fledge-not-allowed":
response.headers.set(b"Ad-Auction-Allowed", b"false")
elif error != b"no-allow-fledge":
response.headers.set(b"Ad-Auction-Allowed", b"true")
if error == b"no-body":
return b''
permitCrossOriginTrustedSignals = request.GET.get(
b"permit-cross-origin-trusted-signals", None)
if permitCrossOriginTrustedSignals != None:
response.headers.set(b"Ad-Auction-Allow-Trusted-Scoring-Signals-From",
permitCrossOriginTrustedSignals)
body = (Path(__file__).parent.resolve() / 'worklet-helpers.js').read_text().encode("ASCII")
if error != b"no-scoreAd":
body += b"""
function scoreAd(adMetadata, bid, auctionConfig, trustedScoringSignals,
browserSignals, directFromSellerSignals,
crossOriginTrustedScoringSignals) {
// Don't bid on interest group with the wrong uuid. This is to prevent
// left over interest groups from other tests from affecting auction
// results.
if (!browserSignals.renderURL.endsWith('uuid={{GET[uuid]}}') &&
!browserSignals.renderURL.includes('uuid={{GET[uuid]}}&')) {
return 0;
}
{{GET[scoreAd]}};
return {desirability: 2 * bid, allowComponentAuction: true};
}"""
if error != b"no-reportResult":
body += b"""
function reportResult(auctionConfig, browserSignals, directFromSellerSignals) {
{{GET[reportResult]}};
}"""
return body