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spec.bs
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<pre class="metadata">
Title: Protected Audience (formerly FLEDGE)
Shortname: protected-audience
Repository: WICG/turtledove
Inline Github Issues: true
Group: WICG
Status: CG-DRAFT
Level: 1
URL: https://wicg.github.io/turtledove/
Boilerplate: omit conformance, omit feedback-header
Editor: Paul Jensen, Google https://www.google.com/, pauljensen@google.com
Abstract: Provides a privacy advancing API to facilitate interest group based advertising.
!Participate: <a href="https://github.com/WICG/turtledove">GitHub WICG/turtledove</a> (<a href="https://github.com/WICG/turtledove/issues/new">new issue</a>, <a href="https://github.com/WICG/turtledove/issues?state=open">open issues</a>)
!Commits: <a href="https://github.com/WICG/turtledove/commits/main/spec.bs">GitHub spec.bs commits</a>
Complain About: accidental-2119 yes, missing-example-ids yes
Indent: 2
Default Biblio Status: current
Markup Shorthands: markdown yes
Assume Explicit For: yes
</pre>
<pre class="anchors">
urlPrefix: https://fetch.spec.whatwg.org/; spec: Fetch
type: dfn
text: HTTP-network-or-cache fetch; url: #concept-http-network-or-cache-fetch
text: task destination; for: fetch params; url: fetch-params-task-destination
urlPrefix: https://www.ietf.org/rfc/rfc4122.txt
type: dfn; text: urn uuid
type: dfn; text: string representation
type: dfn; text: version 4 UUID
urlPrefix: https://tc39.github.io/ecma262/#; spec: ECMASCRIPT
type: abstract-op
text: ToString; url: sec-tostring
urlPrefix: https://github.com/WICG/turtledove/blob/main/FLEDGE_k_anonymity_server.md
type: dfn; text: k-anonymity; url: what-is-k-anonymity
urlPrefix: https://developer.chrome.com/en/docs/privacy-sandbox/glossary/
type: dfn; text: ad creative; url: ad-creative
spec: RFC6234; urlPrefix: https://www.ietf.org/rfc/rfc6234.txt
type: dfn; text: SHA-256
urlPrefix: https://datatracker.ietf.org/doc/html/rfc8032
type: dfn
text: verify; url: section-5.1.7
urlPrefix: https://datatracker.ietf.org/doc/html/rfc3986
type:dfn
text: unreserved percent encoding character; url: section-2.3
spec: html; urlPrefix: https://html.spec.whatwg.org/C
type: dfn
text: create an agent; url: create-an-agent
text: immediately; url: immediately
text: valid floating-point number; url: valid-floating-point-number
text: structured clone algorithm; url: dom-structuredclone
spec: infra; urlPrefix: https://infra.spec.whatwg.org/
type: dfn
text: convert an Infra value to a JSON-compatible JavaScript value; url: #convert-an-infra-value-to-a-json-compatible-javascript-value
spec: RFC8941; urlPrefix: https://httpwg.org/specs/rfc8941.html
type: dfn
text: structured header; url: top
for: structured header
text: boolean; url: boolean
text: integer; url: integer
text: boolean; url: boolean
spec: WebAssembly; urlPrefix: https://webassembly.github.io/spec/core/
type: dfn
urlPrefix: appendix/embedding.html
text: error; url: embed-error
spec: WebAssembly-js-api; urlPrefix: https://webassembly.github.io/spec/js-api/
type: dfn
text: compiling a WebAssembly module; url: #compile-a-webassembly-module
spec: WebIDL; urlPrefix: https://webidl.spec.whatwg.org/
type: dfn
text: convert a Web IDL arguments list to an ECMAScript arguments list; url: #web-idl-arguments-list-converting
spec: Fenced Frame; urlPrefix: https://wicg.github.io/fenced-frame/
type: dfn
for: browsing context
text: fenced frame config instance; url: #browsing-context-fenced-frame-config-instance
spec: Private Aggregation API; urlPrefix: https://patcg-individual-drafts.github.io/private-aggregation-api
type: dfn
text: private-aggregation; url: #private-aggregation
spec: Shared Storage API; urlPrefix: https://wicg.github.io/shared-storage
type: dfn
text: shared-storage; url: #permissionspolicy-shared-storage
text: shared-storage-select-url; url: #permissionspolicy-shared-storage-select-url
</pre>
<pre class=link-defaults>
spec:encoding; type:dfn; text:utf-8
spec:infra; type:dfn; text:user agent
</pre>
<style>
/* Put nice boxes around each algorithm. */
[data-algorithm]:not(.heading) {
padding: .5em;
border: thin solid #ddd; border-radius: .5em;
margin: .5em calc(-0.5em - 1px);
}
[data-algorithm]:not(.heading) > :first-child {
margin-top: 0;
}
[data-algorithm]:not(.heading) > :last-child {
margin-bottom: 0;
}
[data-algorithm] [data-algorithm] {
margin: 1em 0;
}
dl { padding-left: 1em; }
/* domintro from https://resources.whatwg.org/standard.css */
.domintro {
position: relative;
color: green;
background: #DDFFDD;
margin: 2.5em 0 2em 0;
padding: 1.5em 1em 0.5em 2em;
}
.domintro dt, .domintro dt * {
color: black;
font-size: inherit;
}
.domintro dd {
margin: 0.5em 0 1em 2em; padding: 0;
}
.domintro dd p {
margin: 0.5em 0;
}
.domintro::before {
content: 'For web developers (non-normative)';
background: green;
color: white;
padding: 0.15em 0.25em;
font-style: normal;
position: absolute;
top: -0.8em;
left: -0.8em;
}
</style>
# Introduction # {#intro}
*This section is non-normative.*
The Protected Audience API facilitates selecting an advertisement to display to a user based on a
previous interaction with the advertiser or advertising network.
When a user's interactions with an advertiser indicate an interest in something, the advertiser can
ask the browser to record this interest on-device by calling
{{Window/navigator}}.{{Navigator/joinAdInterestGroup()}}. Later, when a website wants to select an
advertisement to show to the user, the website can call
{{Window/navigator}}.{{Navigator/runAdAuction()}} to ask the browser to conduct an
<dfn>auction</dfn> where each of these on-device recorded interests are given the chance to
calculate a bid to display their advertisement.
<h2 id="joining-interest-groups">Joining Interest Groups</h2>
*This first introductory paragraph is non-normative.*
When a user's interactions with a website indicate that the user may have a particular interest, an
advertiser or someone working on behalf of the advertiser (e.g. a demand side platform, DSP) can ask
the user's browser to record this interest on-device by calling
{{Window/navigator}}.{{Navigator/joinAdInterestGroup()}}. This indicates an intent to display an
advertisement relevant to this interest to this user in the future. The [=user agent=] has an
<dfn>interest group set</dfn>, a [=list=] of [=interest groups=] in which
[=interest group/owner=] / [=interest group/name=] pairs are unique.
<h3 id="join-ad-interest-groups">joinAdInterestGroup()</h3>
<xmp class="idl">
[SecureContext]
partial interface Navigator {
Promise<undefined> joinAdInterestGroup(AuctionAdInterestGroup group);
};
dictionary AuctionAd {
required USVString renderURL;
any metadata;
USVString buyerReportingId;
USVString buyerAndSellerReportingId;
sequence<USVString> allowedReportingOrigins;
};
dictionary GenerateBidInterestGroup {
required USVString owner;
required USVString name;
required double lifetimeMs;
boolean enableBiddingSignalsPrioritization = false;
record<DOMString, double> priorityVector;
record<USVString, sequence<DOMString>> sellerCapabilities;
DOMString executionMode = "compatibility";
USVString biddingLogicURL;
USVString biddingWasmHelperURL;
USVString updateURL;
USVString trustedBiddingSignalsURL;
sequence<USVString> trustedBiddingSignalsKeys;
DOMString trustedBiddingSignalsSlotSizeMode = "none";
long maxTrustedBiddingSignalsURLLength;
any userBiddingSignals;
sequence<AuctionAd> ads;
sequence<AuctionAd> adComponents;
};
dictionary AuctionAdInterestGroup : GenerateBidInterestGroup {
double priority = 0.0;
record<DOMString, double> prioritySignalsOverrides;
DOMString additionalBidKey;
};
</xmp>
{{AuctionAdInterestGroup}} is used by {{Window/navigator}}.{{Navigator/joinAdInterestGroup()}}, and
when an interest group is stored to [=interest group set=].
`priority` and `prioritySignalsOverrides` are not passed to `generateBid()` because they can be
modified by `generatedBid()` calls, so could theoretically be used to create a cross-site profile of
a user accessible to `generateBid()` methods, otherwise.
<div algorithm="joinAdInterestGroup()">
The <dfn for=Navigator method>joinAdInterestGroup(|group|)</dfn> method steps are:
<div class="note">
Temporarily, Chromium does not include the <a for="dictionary member"><span class="allow-2119">required</span></a> keyword
for {{GenerateBidInterestGroup/lifetimeMs}}, and instead starts this algorithm with the step
1. If |group|["{{GenerateBidInterestGroup/lifetimeMs}}"] does not [=map/exist=], throw a {{TypeError}}.
This is detectable because it can change the set of fields that are read from the argument when a
{{TypeError}} is eventually thrown, but it will never change whether the call succeeds or fails.
</div>
1. Let |global| be [=this=]'s [=relevant global object=].
1. If |global|'s [=associated Document=] is not [=allowed to use=] the "[=join-ad-interest-group=]"
[=policy-controlled feature=], then [=exception/throw=] a "{{NotAllowedError}}" {{DOMException}}.
1. Let |frameOrigin| be [=this=]'s [=relevant settings object=]'s [=environment settings object/origin=].
1. [=Assert=] that |frameOrigin| is not an [=opaque origin=] and its [=origin/scheme=] is "`https`".
1. Let |interestGroup| be a new [=interest group=].
1. Validate the given |group| and set |interestGroup|'s fields accordingly.
1. Set |interestGroup|'s [=interest group/expiry=] to the [=current wall time=] plus
|group|["{{GenerateBidInterestGroup/lifetimeMs}}"] milliseconds.
1. Set |interestGroup|'s [=interest group/next update after=] to the [=current wall time=] plus 24
hours.
1. Set |interestGroup|'s [=interest group/last updated=] to the [=current wall time=].
1. Set |interestGroup|'s [=interest group/owner=] to the result of [=parsing an https origin=] on
|group|["{{GenerateBidInterestGroup/owner}}"].
1. If |interestGroup|'s [=interest group/owner=] is failure, then [=exception/throw=] a {{TypeError}}.
1. Optionally, [=exception/throw=] a "{{NotAllowedError}}" {{DOMException}}.
Note: This [=implementation-defined=] condition is intended to allow [=user agents=] to decline
for a number of reasons, for example the [=interest group/owner=]'s [=site=] not being
<a href="https://github.com/privacysandbox/attestation">enrolled</a>.
1. Set |interestGroup|'s [=interest group/name=] to |group|["{{GenerateBidInterestGroup/name}}"].
1. Set |interestGroup|'s [=interest group/priority=] to
|group|["{{AuctionAdInterestGroup/priority}}"].
1. Set |interestGroup|'s [=interest group/enable bidding signals prioritization=] to
|group|["{{GenerateBidInterestGroup/enableBiddingSignalsPrioritization}}"].
1. If |group|["{{GenerateBidInterestGroup/priorityVector}}"] [=map/exists=], then set
|interestGroup|'s [=interest group/priority vector=] to
|group|["{{GenerateBidInterestGroup/priorityVector}}"].
1. If |group|["{{AuctionAdInterestGroup/prioritySignalsOverrides}}"] [=map/exists=], then set
|interestGroup|'s [=interest group/priority signals overrides=] to
|group|["{{AuctionAdInterestGroup/prioritySignalsOverrides}}"].
1. If |group|["{{GenerateBidInterestGroup/sellerCapabilities}}"] [=map/exists=], [=map/for each=]
|sellerString| → |capabilities| of |group|["{{GenerateBidInterestGroup/sellerCapabilities}}"]:
1. Let |sellerCapabilities| be a new [=set=] of [=seller capabilities=].
1. [=list/For each=] |capabilityString| of |capabilities|:
1. If |capabilityString| is "`interest-group-counts`" or "`latency-stats`", then
[=set/append=] |capabilityString| to |sellerCapabilities|.
Note: For forward compatibility with new values, don't [=exception/throw=].
1. If |sellerString| is "`*`", then set |interestGroup|'s
[=interest group/all sellers capabilities=] to |sellerCapabilities|.
1. Otherwise:
1. If |interestGroup|'s [=interest group/seller capabilities=] is null, then set
|interestGroup|'s [=interest group/seller capabilities=] to a new [=ordered map=] whose
[=map/keys=] are [=origins=] and whose [=map/values=] are [=sets=] of [=seller capabilities=].
1. Let |sellerUrl| be the result of running the [=URL parser=] on |sellerString|.
1. If |sellerUrl| is not failure:
1. Let |seller| be |sellerUrl|'s [=url/origin=].
1. If |interestGroup|'s [=interest group/seller capabilities=] does not [=map/contain=]
|seller|, then [=map/set=] |interestGroup|'s
[=interest group/seller capabilities=][|seller|] to |sellerCapabilities|.
1. If |group|["{{GenerateBidInterestGroup/executionMode}}"] is "`compatibility`",
"`frozen-context`", or "`group-by-origin`", then set |interestGroup|'s
[=interest group/execution mode=] to it.
1. For each |groupMember| and |interestGroupField| in the following table
<table class="data">
<thead><tr><th>Group member</th><th>Interest group field</th></tr></thead>
<tr>
<td>"{{GenerateBidInterestGroup/biddingLogicURL}}"</td>
<td>[=interest group/bidding url=]</td>
</tr>
<tr>
<td>"{{GenerateBidInterestGroup/biddingWasmHelperURL}}"</td>
<td>[=interest group/bidding wasm helper url=]</td>
</tr>
<tr>
<td>"{{GenerateBidInterestGroup/updateURL}}"</td>
<td>[=interest group/update url=]</td>
</tr>
<tr>
<td>"{{GenerateBidInterestGroup/trustedBiddingSignalsURL}}"</td>
<td>[=interest group/trusted bidding signals url=]</td>
</tr>
</table>
1. If |group| [=map/contains=] |groupMember|:
1. Let |parsedUrl| be the result of running the [=URL parser=] on |group|[|groupMember|].
1. [=exception/Throw=] a {{TypeError}} if any of the following conditions hold:
* |parsedUrl| is failure;
* |parsedUrl| is not [=same origin=] with |interestGroup|'s [=interest group/owner=];
* |parsedUrl| [=includes credentials=];
* |parsedUrl| [=url/fragment=] is not null.
1. Set |interestGroup|'s |interestGroupField| to |parsedUrl|.
1. If |interestGroup|'s [=interest group/trusted bidding signals url=]'s [=url/query=] is not
null, then [=exception/throw=] a {{TypeError}}.
1. If |group|["{{GenerateBidInterestGroup/trustedBiddingSignalsKeys}}"] [=map/exists=], then set
|interestGroup|'s [=interest group/trusted bidding signals keys=] to
|group|["{{GenerateBidInterestGroup/trustedBiddingSignalsKeys}}"].
1. If |group|["{{GenerateBidInterestGroup/maxTrustedBiddingSignalsURLLength}}"] [=map/exists=]:
1. If |group|["{{GenerateBidInterestGroup/maxTrustedBiddingSignalsURLLength}}"] ≥ 0, set
|interestGroup|'s [=interest group/max trusted bidding signals url length=] to
|group|["{{GenerateBidInterestGroup/maxTrustedBiddingSignalsURLLength}}"], otherwise
[=exception/throw=] a {{TypeError}}.
1. If |group|["{{GenerateBidInterestGroup/userBiddingSignals}}"] [=map/exists=]:
1. Set |interestGroup|'s [=interest group/user bidding signals=] to the result of
[=serializing a JavaScript value to a JSON string=], given
|group|["{{GenerateBidInterestGroup/userBiddingSignals}}"]. This can [=exception/throw=] a
{{TypeError}}.
1. If |group|["{{GenerateBidInterestGroup/trustedBiddingSignalsSlotSizeMode}}"] is one of "none",
"slot-size", or "all-slots-requested-sizes", set |interestGroup|'s
[=interest group/trusted bidding signals slot size mode=] to
|group|["{{GenerateBidInterestGroup/trustedBiddingSignalsSlotSizeMode}}"].
1. For each |groupMember| and |interestGroupField| in the following table
<table class="data">
<thead><tr><th>Group member</th><th>Interest group field</th></tr></thead>
<tr>
<td>"{{GenerateBidInterestGroup/ads}}"</td>
<td>[=interest group/ads=]</td>
</tr>
<tr>
<td>"{{GenerateBidInterestGroup/adComponents}}"</td>
<td>[=interest group/ad components=]</td>
</tr>
</table>
1. If |group| [=map/contains=] |groupMember|, [=list/for each=] |ad| of |group|[|groupMember|]:
1. Let |igAd| be a new [=interest group ad=].
1. Let |renderURL| be the result of running the [=URL parser=] on
|ad|["{{AuctionAd/renderURL}}"].
1. [=exception/Throw=] a {{TypeError}} if any of the following conditions hold:
* |renderURL| is failure;
* |renderURL| [=url/scheme=] is not "`https`";
* |renderURL| [=includes credentials=].
1. Set |igAd|'s [=interest group ad/render url=] to |renderURL|.
1. If |ad|["{{AuctionAd/metadata}}"] [=map/exists=], then let
|igAd|'s [=interest group ad/metadata=] be the result of
[=serializing a JavaScript value to a JSON string=], given |ad|["{{AuctionAd/metadata}}"].
This can [=exception/throw=] a {{TypeError}}.
1. If |groupMember| is "{{GenerateBidInterestGroup/ads}}":
1. If |ad|["{{AuctionAd/buyerReportingId}}"] [=map/exists=], then set
|igAd|'s [=interest group ad/buyer reporting ID=] to it.
1. If |ad|["{{AuctionAd/buyerAndSellerReportingId}}"] [=map/exists=],
then set |igAd|'s [=interest group ad/buyer and seller reporting ID=] to it.
1. If |ad|["{{AuctionAd/allowedReportingOrigins}}"] [=map/exists=]:
1. Let |allowedReportingOrigins| be a new [=list=] of [=origins=].
1. [=list/For each=] |originStr| in |ad|["{{AuctionAd/allowedReportingOrigins}}"]:
1. Let |origin| be the result of [=parsing an https origin=] on |originStr|.
1. If |origin| is failure, then [=exception/throw=] a {{TypeError}}.
1. [=list/Append=] |origin| to |allowedReportingOrigins|.
1. If |allowedReportingOrigins|'s [=list/size=] > 10, [=exception/throw=]
a {{TypeError}}.
1. Set |igAd|'s [=interest group ad/allowed reporting origins=] to |allowedReportingOrigins|.
1. [=list/Append=] |igAd| to |interestGroup|'s |interestGroupField|.
1. If |group|["{{AuctionAdInterestGroup/additionalBidKey}}"] [=map/exists=]:
1. Let |decodedKey| be the result of running [=forgiving-base64 decode=] with
|group|["{{AuctionAdInterestGroup/additionalBidKey}}"].
1. [=exception/Throw=] a {{TypeError}} if any of the following conditions hold:
* |decodedKey| is a failure;
* |decodedKey|'s [=byte sequence/length=] is not 32;
* |group|["{{GenerateBidInterestGroup/ads}}"] [=map/exists=];
* |group|["{{GenerateBidInterestGroup/updateURL}}"] [=map/exists=].
1. Set |interestGroup|'s [=interest group/additional bid key=] to |decodedKey|.
1. If |interestGroup|'s [=interest group/estimated size=] > 1048576, then [=exception/throw=] a
{{TypeError}}.
1. Let |p| be [=a new promise=].
1. Let |queue| be the result of [=starting a new parallel queue=].
1. [=parallel queue/enqueue steps|Enqueue the following steps=] to |queue|:
1. Let |permission| be the result of [=checking interest group permissions=] with
|interestGroup|'s [=interest group/owner=], |frameOrigin|, and "`join`".
1. If |permission| is false, then [=queue a global task=] on [=DOM manipulation task source=],
given |global|, to [=reject=] |p| with a "{{NotAllowedError}}" {{DOMException}} and abort these
steps.
1. [=Queue a global task=] on [=DOM manipulation task source=], given |global|, to [=resolve=] |p|
with `undefined`.
1. If the browser is currently storing an interest group with `owner` and `name` that matches
|interestGroup|, then set the [=interest group/bid counts=],
[=interest group/join counts=], and [=interest group/previous wins=] of
|interestGroup| to the values of the currently stored one and remove
the currently stored one from the browser.
1. Set |interestGroup|'s [=interest group/joining origin=] to [=this=]'s
[=relevant settings object=]'s [=environment/top-level origin=].
1. Set |interestGroup|'s [=interest group/join time=] to the [=current wall time=].
1. If the most recent entry in |interestGroup|'s [=interest group/join counts=] corresponds to
the current day in UTC, increment its count. If not, [=list/insert=] a new [=tuple=]
the time set to the current UTC day and a count of 1.
1. Store |interestGroup| in the [=user agent=]'s [=interest group set=].
1. Return |p|.
</div>
<h3 id="interest-group-storage-maintenance">Interest Group Storage Maintenance</h3>
There is a job that periodically [=performs storage maintenance=] on the [=user agent=]'s
[=interest group set=]. It performs operations such as [=list/removing=] expired or excess
[=interest groups=]. An [=interest group set=] must respect the following limits. Implementations
may define their own values for the below constants, however we supply the below values as a
starting point, inspired by what the initial implementation of this specification uses:
* <dfn>Interest group set max owners</dfn> is 1000, which defines the max number of
[=interest group/owners=] in the [=user agent=]'s [=interest group set=].
* <dfn>Max regular interest groups per owner</dfn> is 2000, which defines the max number of
[=regular interest groups=] in the [=user agent=]'s [=interest group set=] for an
[=interest group/owner=].
* <dfn>Max negative interest groups per owner</dfn> is 20000, which defines the max number of
[=negative interest groups=] in the [=user agent=]'s [=interest group set=] for an
[=interest group/owner=].
* <dfn>Max interest groups total size per owner</dfn> is <code>10\*1024\*1024</code>, which
defines the max total [=interest group/estimated size|sizes=] of [=interest groups=] in the
[=user agent=]'s [=interest group set=] for an [=interest group/owner=]. It includs both
[=regular interest groups=] and [=negative interest groups=].
<div algorithm>
To <dfn>perform storage maintenance</dfn>:
1. Let |ownersAndExpiry| be a new [=ordered map=] whose [=map/keys=] are [=origins=] and
[=map/values=] are [=moments=].
Note: The [=map/key=] is from [=interest group/owner=], and [=map/value=] is from
[=interest group/expiry=]. It's used to determine a set of [=interest group/owners=] whose
[=interest groups=] will be removed from the [=user agent=]'s [=interest group set=] because the
number of distinct [=interest group/owners=] exceeds the [=Interest group set max owners=] limit.
It's sorted based on their [=map/values=] ([=interest group/expiry=]) in descending order, in
order to remove [=interest groups=] of [=interest group/owners=] expiring soonest first.
1. Let |now| be the [=current wall time=].
1. [=list/For each=] |ig| of the [=user agent=]'s [=interest group set=]:
1. Let |owner| be |ig|'s [=interest group/owner=].
1. If |ig|'s [=interest group/expiry=] is before |now|, then [=list/remove=] |ig| from the
[=user agent=]'s [=interest group set=] and [=iteration/continue=].
1. If |ownersAndExpiry|[|owner|] [=map/exists=], then [=map/set=] |ownersAndExpiry|[|owner|] to
|ig|'s [=interest group/expiry=] if it comes after |ownersAndExpiry|[|owner|].
1. Otherwise, [=map/set=] |ownersAndExpiry|[|owner|] to |ig|'s [=interest group/expiry=].
1. If |ownersAndExpiry|'s [=map/size=] > [=interest group set max owners=], then [=map/set=]
|ownersAndExpiry| to |ownersAndExpiry| [=map/sorted in descending order=] with |a| being less than
|b| if |a|'s [=map/value=] comes before |b|'s [=map/value=], where [=map/values=] are
[=interest group/expiry=].
1. Let |owners| be the [=map/get the keys|keys=] of |ownersAndExpiry|.
1. [=list/For each=] |i| in [=the range=] from 0 to |owners|'s [=set/size=], exclusive:
1. If |i| ≥ [=interest group set max owners=], then [=list/remove=] [=interest groups=] from
the [=user agent=]'s [=interest group set=] whose [=interest group/owner=] is |owners|[|i|], and
[=iteration/continue=].
1. Let |regularIgs| be a [=list=] of [=regular interest groups=] in the [=user agent=]'s
[=interest group set=] whose [=interest group/owner=] is |owners|[|i|].
1. If |regularIgs|'s [=list/size=] > [=max regular interest groups per owner=], then
[=clear excess interest groups=] with |regularIgs| and [=max regular interest groups per owner=].
1. Let |negativeIgs| be a [=list=] of [=negative interest groups=] in the [=user agent=]'s
[=interest group set=] whose [=interest group/owner=] is |owners|[|i|].
1. If |negativeIgs|'s [=list/size=] > [=max negative interest groups per owner=], then
[=clear excess interest groups=] with |negativeIgs| and [=max negative interest groups per owner=].
1. [=list/For each=] |owner| of |owners|:
1. Let |igs| be a [=list=] of [=interest groups=] in the [=user agent=]'s [=interest group set=]
whose [=interest group/owner=] is |owner|, [=list/sorted in descending order=] with |a| being
less than |b| if |a|[=interest group/expiry=] comes before |b|[=interest group/expiry=].
1. Let |cumulativeSize| be 0.
1. [=list/For each=] |ig| of |igs|:
1. If the sum of |cumulativeSize| and |ig|'s [=interest group/estimated size=]
> [=max interest groups total size per owner=], then [=list/remove=] |ig| from the
[=user agent=]'s [=interest group set=].
1. Otherwise, increment |cumulativeSize| by |ig|'s [=interest group/estimated size=].
</div>
<div algorithm>
To <dfn>clear excess interest groups</dfn> with a [=list=] of [=interest groups=] |igs|, and an
integer |maxIgs|:
1. Let |sortedIgs| be |igs| [=list/sorted in descending order=] with |a| being less
than |b| if |a|'s [=interest group/expiry=] comes before |b|'s [=interest group/expiry=].
Note: In order to remove interest groups expiring soonest first, sort interest groups based on
their expiry in descending order.
1. [=list/For each=] |i| in [=the range=] from |maxIgs| to |igs|'s [=list/size=], exclusive:
1. [=list/Remove=] |sortedIgs|[|i|] from the [=user agent=]'s [=interest group set=].
</div>
<h2 id="leaving-interest-groups">Leaving Interest Groups</h2>
<h3 id="leaveadinterestgroup">leaveAdInterestGroup()</h3>
*This first introductory paragraph is non-normative.*
{{Window/navigator}}.{{Navigator/leaveAdInterestGroup()}} removes a user from a particular interest
group.
<xmp class="idl">
[SecureContext]
partial interface Navigator {
Promise<undefined> leaveAdInterestGroup(optional AuctionAdInterestGroupKey group = {});
};
dictionary AuctionAdInterestGroupKey {
required USVString owner;
required USVString name;
};
</xmp>
<div algorithm>
The <dfn for=Navigator method>leaveAdInterestGroup(group)</dfn> method steps are:
1. Let |global| be [=this=]'s [=relevant global object=].
1. Let |frameOrigin| be |global|'s [=environment settings object/origin=].
1. [=Assert=] that |frameOrigin| is not an [=opaque origin=] and its [=origin/scheme=] is "`https`".
1. Let |p| be [=a new promise=].
1. If |group| [=map/is empty=]:
1. Let |instance| be |global|'s [=Window/browsing context=]'s
[=browsing context/fenced frame config instance=].
1. If |instance| is null, then return.
1. Let |interestGroup| be |instance|'s [=fenced frame config instance/interest group descriptor=].
1. Run these steps [=in parallel=]:
1. [=Queue a global task=] on [=DOM manipulation task source=], given |global|, to [=resolve=]
|p| with `undefined`.
1. If |interestGroup| is not null:
1. Let |owner| be |interestGroup|'s [=interest group descriptor/owner=].
1. If |owner| is [=same origin=] with |frameOrigin|, then [=list/remove=] [=interest groups=]
from the [=user agent=]'s [=interest group set=] whose [=interest group/owner=] is |owner| and
[=interest group/name=] is |interestGroup|'s [=interest group descriptor/name=].
1. Otherwise:
1. If |global|'s [=associated Document=] is not [=allowed to use=] the
"[=join-ad-interest-group=]" [=policy-controlled feature=], then [=exception/throw=] a
"{{NotAllowedError}}" {{DOMException}}.
Note: Both joining and leaving interest groups use the "join-ad-interest-group" feature.
1. Let |owner| be the result of [=parsing an https origin=] with
|group|["{{AuctionAdInterestGroupKey/owner}}"].
1. If |owner| is failure, [=exception/throw=] a {{TypeError}}.
1. Run these steps [=in parallel=]:
1. Let |permission| be the result of [=checking interest group permissions=] with
|owner|, |frameOrigin|, and "`leave`".
1. If |permission| is false, then [=queue a global task=] on [=DOM manipulation task source=],
given |global|, to [=reject=] |p| with a "{{NotAllowedError}}" {{DOMException}} and abort
these steps.
1. [=Queue a global task=] on [=DOM manipulation task source=], given |global|, to [=resolve=]
|p| with `undefined`.
1. [=list/Remove=] [=interest groups=] from the [=user agent=]'s [=interest group set=] whose
[=interest group/owner=] is |owner| and [=interest group/name=] is
|group|["{{AuctionAdInterestGroupKey/name}}"].
1. Return |p|.
</div>
<h3 id="clearoriginjoinedAdInterestGroups">clearOriginJoinedAdInterestGroups()</h3>
*This first introductory paragraph is non-normative.*
{{Window/navigator}}.{{Navigator/clearOriginJoinedAdInterestGroups()}} removes a user from
[=interest groups=] whose [=interest group/joining origin=] is the associated
{{Navigator}}'s [=relevant settings object=]'s [=environment/top-level origin=].
<xmp class="idl">
[SecureContext]
partial interface Navigator {
Promise<undefined> clearOriginJoinedAdInterestGroups(
USVString owner, optional sequence<USVString> interestGroupsToKeep = []);
};
</xmp>
<div algorithm>
The <dfn for=Navigator method>clearOriginJoinedAdInterestGroups(|owner|, |interestGroupsToKeep|)</dfn>
method steps are:
1. Let |frameOrigin| be [=this=]'s [=relevant settings object=]'s
[=environment settings object/origin=].
1. [=Assert=] that |frameOrigin| is not an [=opaque origin=] and its [=origin/scheme=] is "`https`".
1. Let |p| be [=a new promise=].
1. Let |global| be [=this=]'s [=relevant global object=].
1. If |global|'s [=associated Document=] is not [=allowed to use=] the
"[=join-ad-interest-group=]" [=policy-controlled feature=], then [=exception/throw=] a
"{{NotAllowedError}}" {{DOMException}}.
Note: Both joining and leaving interest groups use the "join-ad-interest-group" feature.
1. Let |ownerOrigin| be the result of [=parsing an https origin=] with |owner|.
1. If |ownerOrigin| is failure, [=exception/throw=] a {{TypeError}}.
1. Run these steps [=in parallel=]:
1. Let |permission| be the result of [=checking interest group permissions=] with
|ownerOrigin|, |frameOrigin|, and "`leave`".
1. If |permission| is false, then [=queue a global task=] on the [=DOM manipulation task source=]
given |global|, [=reject=] |p| with a "{{NotAllowedError}}" {{DOMException}} and abort these steps.
1. [=Queue a global task=] on the [=DOM manipulation task source=] given |global|, to [=resolve=] |p|
with {{undefined}}.
1. [=list/Remove=] [=interest groups=] from the [=user agent=]'s [=interest group set=]
whose [=interest group/owner=] is |ownerOrigin|, whose [=interest group/joining origin=] is
|frameOrigin|, and whose [=interest group/name=] is not in |interestGroupsToKeep|.
1. Return |p|.
</div>
<h2 id="running-ad-auctions">Running Ad Auctions</h2>
*This first introductory paragraph is non-normative.*
When a website or someone working on behalf of the website (e.g. a supply side platform, SSP) wants
to conduct an auction to select an advertisement to display to the user, they can call the
{{Window/navigator}}.{{Navigator/runAdAuction()}} function, providing an auction configuration that
tells the browser how to conduct the auction and which on-device recorded interests are allowed to
bid in the auction for the chance to display their advertisement.
<h3 id="runadauction">runAdAuction()</h3>
<xmp class="idl">
[SecureContext]
partial interface Navigator {
Promise<(USVString or FencedFrameConfig)?> runAdAuction(AuctionAdConfig config);
};
dictionary AuctionAdConfig {
required USVString seller;
required USVString decisionLogicURL;
USVString trustedScoringSignalsURL;
long maxTrustedScoringSignalsURLLength;
sequence<USVString> interestGroupBuyers;
Promise<any> auctionSignals;
Promise<any> sellerSignals;
Promise<DOMString> directFromSellerSignalsHeaderAdSlot;
Promise<record<USVString, USVString>> deprecatedRenderURLReplacements;
unsigned long long sellerTimeout;
unsigned short sellerExperimentGroupId;
Promise<record<USVString, any>> perBuyerSignals;
Promise<record<USVString, unsigned long long>> perBuyerTimeouts;
Promise<record<USVString, unsigned long long>> perBuyerCumulativeTimeouts;
unsigned long long reportingTimeout;
USVString sellerCurrency;
Promise<record<USVString, USVString>> perBuyerCurrencies;
record<USVString, unsigned short> perBuyerMultiBidLimits;
record<USVString, unsigned short> perBuyerGroupLimits;
record<USVString, unsigned short> perBuyerExperimentGroupIds;
record<USVString, record<USVString, double>> perBuyerPrioritySignals;
sequence<DOMString> requiredSellerCapabilities;
record<DOMString, DOMString> requestedSize;
sequence<record<DOMString, DOMString>> allSlotsRequestedSizes;
Promise<undefined> additionalBids;
DOMString auctionNonce;
sequence<AuctionAdConfig> componentAuctions = [];
AbortSignal? signal;
Promise<boolean> resolveToConfig;
};
</xmp>
<div algorithm="runAdAuction()">
The <dfn for=Navigator method>runAdAuction(|config|)</dfn> method steps are:
1. Let |global| be [=this=]'s [=relevant global object=].
1. Let |settings| be [=this=]'s [=relevant settings object=].
1. If |global|'s [=associated Document=] is not [=allowed to use=] the "[=run-ad-auction=]"
[=policy-controlled feature=], then [=exception/throw=] a "{{NotAllowedError}}" {{DOMException}}.
1. Let |auctionConfig| be the result of running [=validate and convert auction ad config=] with
|config| and true.
1. If |auctionConfig| is failure, then [=exception/throw=] a {{TypeError}}.
1. Optionally, [=exception/throw=] a "{{NotAllowedError}}" {{DOMException}}.
Note: This [=implementation-defined=] condition is intended to allow [=user agents=] to decline
for a number of reasons, for example the [=auction config/seller=]'s [=site=] not being
<a href="https://github.com/privacysandbox/attestation">enrolled</a>.
1. Let |p| be [=a new promise=].
1. Let |configMapping| be |global|'s [=associated Document=]'s [=node navigable=]'s
[=navigable/traversable navigable=]'s [=traversable navigable/fenced frame config mapping=].
1. Let |pendingConfig| be the result of [=constructing a pending fenced frame config=] with
|auctionConfig|.
1. Let |urn| be the result of running [=fenced frame config mapping/store a pending config=] on
|configMapping| with |pendingConfig|.
1. If |urn| is failure, then resolve |p| with null and return |p|.
1. Let |bidIgs| be a new [=list=] of [=interest groups=].
1. If |config|["{{AuctionAdConfig/signal}}"] [=map/exists=], then:
1. Let |signal| be |config|["{{AuctionAdConfig/signal}}"].
1. If |signal| is [=AbortSignal/aborted=], then [=reject=] |p| with |signal|'s
[=AbortSignal/abort reason=] and return |p|.
1. [=AbortSignal/Add|Add the following abort steps=] to |signal|:
1. [=Reject=] |p| with |signal|’s [=AbortSignal/abort reason=].
1. Run [=update bid counts=] with |bidIgs|.
1. Run [=interest group update=] with |auctionConfig|'s
[=auction config/interest group buyers=].
1. Let |queue| be the result of [=starting a new parallel queue=].
1. [=parallel queue/enqueue steps|Enqueue the following steps=] to |queue|:
1. Let |bidDebugReportInfoList| be a new [=list=] of [=bid debug reporting info=].
1. Let |winnerInfo| be the result of running [=generate and score bids=] with |auctionConfig|,
null, |global|, |settings|'s [=environment/top-level origin=], |bidIgs|, and |bidDebugReportInfoList|.
1. Let |auctionReportInfo| be a new [=auction report info=].
1. If |winnerInfo| is not failure, then set |auctionReportInfo| to the result of running
[=collect forDebuggingOnly reports=] with |bidDebugReportInfoList| and |winnerInfo|.
1. If |winnerInfo| is failure, then [=queue a global task=] on [=DOM manipulation task source=],
given |global|, to [=reject=] |p| with a "{{TypeError}}".
1. Otherwise if |winnerInfo| is null or |winnerInfo|'s [=leading bid info/leading bid=] is null:
1. [=Queue a global task=] on [=DOM manipulation task source=], given |global|, to [=resolve=]
|p| with null.
1. [=list/For each=] |reportUrl| of |auctionReportInfo|'s
[=auction report info/debug loss report urls=]:
1. [=Send report=] to |reportUrl|.
1. Otherwise:
1. Let |winner| be |winnerInfo|'s [=leading bid info/leading bid=].
1. Let |fencedFrameConfig| be the result of [=filling in a pending fenced frame config=] with
|pendingConfig|, |auctionConfig|, |winnerInfo|, and |auctionReportInfo|.
1. [=fenced frame config mapping/Finalize a pending config=] on |configMapping| with |urn| and
|fencedFrameConfig|.
1. Wait until |auctionConfig|'s [=auction config/resolve to config=] is a boolean.
1. Let |result| be |fencedFrameConfig|.
1. If |auctionConfig|'s [=auction config/resolve to config=] is false, then set |result| to |urn|.
1. [=Queue a global task=] on the [=DOM manipulation task source=], given |global|, to
resolve |p| with |result|.
1. Run [=interest group update=] with |auctionConfig|'s [=auction config/interest group buyers=].
1. Run [=update bid counts=] with |bidIgs|.
1. Run [=update previous wins=] with |winner|.
1. Return |p|.
</div>
<div algorithm>
To <dfn>construct a pending fenced frame config</dfn> given an [=auction config=]
|config|:
1. Return a [=fenced frame config=] with the following [=struct/items=]:
: [=fenced frame config/mapped url=]
:: a [=struct=] with the following [=struct/items=]:
: [=mapped url/value=]
:: `"about:blank"`
: [=mapped url/visibility=]
:: "<a for=visibility>`opaque`</a>"
: [=fenced frame config/container size=]
:: TODO: fill this in once container size is spec'd to be in |config|
: [=fenced frame config/content size=]
:: null
: [=fenced frame config/interest group descriptor=]
:: a [=struct=] with the following [=struct/items=]:
: [=interest group descriptor/value=]
:: a [=struct=] with the following [=struct/items=]:
: [=interest group descriptor/owner=]
:: ""
: [=interest group descriptor/name=]
:: ""
: [=interest group descriptor/visibility=]
:: "<a for=visibility>`opaque`</a>"
: [=fenced frame config/on navigate callback=]
:: null
: [=fenced frame config/effective sandbox flags=]
:: a [=struct=] with the following [=struct/items=]:
: [=effective sandbox flags/value=]
:: TODO: fill this in once fenced frame sandbox flags are more fully specified
: [=effective sandbox flags/visibility=]
:: "<a for=visibility>`opaque`</a>"
: [=fenced frame config/effective enabled permissions=]
:: a [=struct=] with the following [=struct/items=]:
: [=effective enabled permissions/value=]
:: «"<code>{{PermissionPolicy/attribution-reporting}}</code>",
"<code>[=private-aggregation=]</code>", "<code>[=shared-storage=]</code>",
"<code>[=shared-storage-select-url=]</code>"»
: [=effective enabled permissions/visibility=]
:: "<a for=visibility>`opaque`</a>"
: [=fenced frame config/fenced frame reporting metadata=]
:: null
: [=fenced frame config/exfiltration budget metadata=]
:: null
: [=fenced frame config/nested configs=]
:: a [=struct=] with the following [=struct/items=]:
: [=nested configs/value=]
:: an empty [=list=] «»
: [=nested configs/visibility=]
:: "<a for=visibility>`opaque`</a>"
: [=fenced frame config/embedder shared storage context=]
:: null
</div>
<div algorithm>
To <dfn>fill in a pending fenced frame config</dfn> given a [=fenced frame config=]
|pendingConfig|, [=auction config=] |auctionConfig|, [=leading bid info=] |winningBidInfo|, and
[=auction report info=] |auctionReportInfo|:
1. Let |winningBid| be |winningBidInfo|'s [=leading bid info/leading bid=].
1. Let |replacements| be an [=ordered map=] whose [=map/keys=] are [=strings=] and whose
[=map/values=] are [=strings=].
1. [=list/For each=] |replacement| in |auctionConfig|'s
[=auction config/deprecated render url replacements=]:
1. Let |k| be |replacement|'s [=ad keyword replacement/match=].
1. Let |v| be |replacement|'s [=ad keyword replacement/replacement=].
1. [=map/Set=] |replacements|[|k|] to |v|.
1. Let |replacedAdURL| be the result of
running [=fencedframeutil/substitute macros=] with |replacements| and |winningBid|'s
[=generated bid/ad descriptor=]'s [=ad descriptor/url=].
1. Set |pendingConfig|'s [=fenced frame config/mapped url=]'s [=mapped url/value=] to
|replacedAdURL|.
1. Let |adSize| be |winningBid|'s [=generated bid/ad descriptor=]'s [=ad descriptor/size=].
1. Let |concreteAdSize| be the result of
Issue: resolving screen-relative sizes to pixel values for |adSize|.
(<a href="https://github.com/WICG/turtledove/issues/986">WICG/turtledove#986</a>)
1. Let |adWidthString| and |adHeightString| be the result of
Issue: converting |concreteAdSize| to strings.
(<a href="https://github.com/WICG/turtledove/issues/986">WICG/turtledove#986</a>)
1. Let |sizeMacroMap| be the [=ordered map=] «[ "{%AD_WIDTH%}" → |adWidthString|,
"{%AD_HEIGHT%}" → |adHeightString|, "${AD_WIDTH}" → |adWidthString|,
"${AD_HEIGHT}" → |adHeightString|]»
1. Set |pendingConfig|'s [=fenced frame config/mapped url=]'s [=mapped url/value=] to
the result of [=fencedframeutil/substituting macros=] with |sizeMacroMap| into |winningBid|'s
[=generated bid/ad descriptor=]'s [=ad descriptor/url=].
1. If |adSize| is not null:
1. Set |pendingConfig|'s [=fenced frame config/content size=] to a [=struct=] with the following
[=struct/items=]:
: [=content size/value=]
:: |concreteAdSize|.
Issue: Cast |concreteAdSize| into the format that is eventually chosen for
[=content size/value=].
(<a href="https://github.com/WICG/turtledove/issues/986">WICG/turtledove#986</a>)
: [=content size/visibility=]
:: "<a for=visibility>`opaque`</a>"
1. Set |pendingConfig|'s [=fenced frame config/interest group descriptor=]'s
[=interest group descriptor/value=] to a [=struct=] with the following [=struct/items=]:
: owner
:: |winningBid|'s [=generated bid/interest group=]'s [=interest group/owner=]
: name
:: |winningBid|'s [=generated bid/interest group=]'s [=interest group/name=]
1. Let |fencedFrameReportingMap| be the [=map=] «[ "`buyer`" → «», "`seller`" → «» ]».
1. If |auctionConfig|'s [=auction config/component auctions=] is [=list/empty=], then [=map/set=]
|fencedFrameReportingMap|["`component-seller`"] to an empty [=list=] «».
1. Set |pendingConfig|'s [=fenced frame config/fenced frame reporting metadata=] to a [=struct=]
with the following [=struct/items=]:
: [=fenced frame reporting metadata/value=]
:: A [=struct=] with the following [=struct/items=]:
: [=fenced frame reporting metadata/fenced frame reporting map=]
:: |fencedFrameReportingMap|
: [=fenced frame reporting metadata/direct seller is seller=]
:: true if |auctionConfig|'s [=auction config/component auctions=] is [=list/empty=], false
otherwise
: [=fenced frame reporting metadata/allowed reporting origins=]
:: |winningBid|'s [=generated bid/bid ad=]'s [=interest group ad/allowed reporting origins=]
: [=fenced frame reporting metadata/visibility=]
:: "<a for=visibility>`opaque`</a>"
1. Set |pendingConfig|'s [=fenced frame config/on navigate callback=] to an algorithm with these
steps:
1. [=Asynchronously finish reporting=] with |pendingConfig|'s
[=fenced frame config/fenced frame reporting metadata=]'s
[=fenced frame reporting metadata/value=]'s
[=fenced frame reporting metadata/fenced frame reporting map=], |winningBidInfo| and
|auctionReportInfo|.
1. Let |adComponentDescriptorsWithReplacements| be a new [=list=] of [=ad descriptors=].
1. If |winningBid|'s [=generated bid/ad component descriptors=] is not null:
1. [=list/For each=] |adComponentDescriptor| of |winningBid|'s
[=generated bid/ad component descriptors=]:
1. Let |descriptorWithReplacement| be a new [=ad descriptor=].
1. Set |descriptorWithReplacement|'s [=ad descriptor/size=] to
|adComponentDescriptor|'s [=ad descriptor/size=].
1. Set |descriptorWithReplacement|'s [=ad descriptor/url=] to the result of running
[=fencedframeutil/substitute macros=] with |replacements| and |adComponentDescriptor|'s
[=ad descriptor/url=].
1. [=list/Append=] |descriptorWithReplacement| to |adComponentDescriptorsWithReplacements|.
1. Set |pendingConfig|'s [=fenced frame config/nested configs=]'s [=nested configs/value=] to
the result of running [=create nested configs=] with |adComponentDescriptorsWithReplacements|.
1. Return |pendingConfig|.
</div>
<div algorithm>
To <dfn>asynchronously finish reporting</dfn> given a
[=fencedframetype/fenced frame reporting map=] |reportingMap|, [=leading bid info=] |leadingBidInfo|,
and [=auction report info=] |auctionReportInfo|.
1. [=Increment a winning bid's k-anonymity count=] given |leadingBidInfo|'s [=leading bid info/leading bid=].
1. If |leadingBidInfo|'s [=leading bid info/leading non-k-anon-enforced bid=] is
not null, and |leadingBidInfo|'s [=leading bid info/leading non-k-anon-enforced bid=]'s [=generated bid/id=]
≠ |leadingBidInfo|'s [=leading bid info/leading bid=]'s [=generated bid/id=],
[=increment a winning bid's k-anonymity count=] given
|leadingBidInfo|'s [=leading bid info/leading non-k-anon-enforced bid=].
1. Let |buyerDone|, |sellerDone|, and |componentSellerDone| be [=booleans=], initially false.
1. If |leadingBidInfo|'s [=leading bid info/component seller=] is null, set |componentSellerDone|
to true.
1. [=iteration/While=]:
1. If |buyerDone|, |sellerDone|, and |componentSellerDone| are all true, then
[=iteration/break=].
1. Wait until one of the following fields of |leadingBidInfo| being not null:
* [=leading bid info/buyer reporting result=];
* [=leading bid info/seller reporting result=];
* [=leading bid info/component seller reporting result=].
1. If |buyerDone| is false and |leadingBidInfo|'s [=leading bid info/buyer reporting result=]
is not null:
1. Let |buyerMap| be |leadingBidInfo|'s [=leading bid info/buyer reporting result=]'s
[=reporting result/reporting beacon map=].
1. If |buyerMap| is null, set |buyerMap| to an empty [=map=] «[]».
1. Let |macroMap| be |leadingBidInfo|'s [=leading bid info/buyer reporting result=]'s
[=reporting result/reporting macro map=].
1. [=Finalize a reporting destination=] with |reportingMap|,
{{FenceReportingDestination/buyer}}, |buyerMap|, and |macroMap|.
1. [=Send report=] to |leadingBidInfo|'s [=leading bid info/buyer reporting result=]'s
[=reporting result/report url=].
1. Set |buyerDone| to true.
1. If |sellerDone| is false and |leadingBidInfo|'s [=leading bid info/seller reporting result=]
is not null:
1. Let |sellerMap| be |leadingBidInfo|'s [=leading bid info/seller reporting result=]'s
[=reporting result/reporting beacon map=].
1. If |sellerMap| is null, set |sellerMap| to an empty [=map=] «[]».
1. [=Finalize a reporting destination=] with |reportingMap|,
{{FenceReportingDestination/seller}}, and |sellerMap|.
1. [=Send report=] to |leadingBidInfo|'s [=leading bid info/seller reporting result=]'s
[=reporting result/report url=].
1. Set |sellerDone| to true.
1. If |componentSellerDone| is false and |leadingBidInfo|'s
[=leading bid info/component seller reporting result=] is not null:
1. Let |componentSellerMap| be |leadingBidInfo|'s
[=leading bid info/component seller reporting result=]'s
[=reporting result/reporting beacon map=].
1. If |componentSellerMap| is null, set |componentSellerMap| to an empty [=map=] «[]».
1. [=Finalize a reporting destination=] with |reportingMap|,
{{FenceReportingDestination/component-seller}}, and |componentSellerMap|.
1. [=Send report=] to |leadingBidInfo|'s [=leading bid info/component seller reporting result=]'s
[=reporting result/report url=].
1. Set |componentSellerDone| to true.
1. [=list/For each=] |reportUrl| of |auctionReportInfo|'s [=auction report info/debug win report urls=]:
1. [=Send report=] to |report|.
1. [=list/For each=] |reportUrl| of |auctionReportInfo|'s [=auction report info/debug loss report urls=]:
1. [=Send report=] to |report|.
</div>
<div algorithm>
To <dfn>create nested configs</dfn> given [=generated bid/ad component descriptors=]
|adComponentDescriptors|:
1. Let |nestedConfigs| be an empty [=list=] «».
1. If |adComponentDescriptors| is null:
1. Return |nestedConfigs|.
1. [=set/For each=] |adComponentDescriptor| of |adComponentDescriptors|:
1. Let |fencedFrameConfig| be a [=fenced frame config=] with the following [=struct/items=]:
: [=fenced frame config/mapped url=]
:: a [=struct=] with the following [=struct/items=]:
: [=mapped url/value=]
:: |adComponentDescriptor|'s [=ad descriptor/url=]
: [=mapped url/visibility=]
:: "<a for=visibility>`opaque`</a>"
: [=fenced frame config/container size=]
:: null
: [=fenced frame config/content size=]
:: If |adComponentDescriptor|'s [=ad descriptor/size=] is null, then null. Otherwise, a
[=struct=] with the following [=struct/items=]:
: [=content size/value=]
:: |adComponentDescriptor|'s [=ad descriptor/size=] TODO: Resolve screen-relative sizes and
macros and cast this properly.
: [=content size/visibility=]
:: "<a for=visibility>`opaque`</a>"
: [=fenced frame config/interest group descriptor=]
:: null
: [=fenced frame config/on navigate callback=]
:: null
: [=fenced frame config/effective sandbox flags=]
:: a [=struct=] with the following [=struct/items=]:
: [=effective sandbox flags/value=]
:: TODO: fill this in once fenced frame sandbox flags are more fully specified