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Snapshot sandbox at start of navigation. #5098

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merged 3 commits into from Nov 25, 2019
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Snapshot sandbox at start of navigation. #5098

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a8cc209
Snapshot sandbox at start of navigation.
clelland Nov 18, 2019
ad77f73
Remove unused arg from "Determine active sandboxing flags"
clelland Nov 20, 2019
742ee8d
Rename determine sandbox flags algorithm
clelland Nov 20, 2019
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119 changes: 61 additions & 58 deletions source
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Expand Up @@ -78446,8 +78446,8 @@ dictionary <dfn>DragEventInit</dfn> : <span>MouseEventInit</span> {
<span>creator base URL</span> to return <var>creator</var>'s <span data-x="document base
URL">base URL</span>.</p></li>

<li><p>Let <var>sandboxFlags</var> be the result of <span>determining active sandboxing
flags</span> given <var>browsingContext</var>.</p></li>
<li><p>Let <var>sandboxFlags</var> be the result of <span>determining sandboxing flags</span>
given <var>browsingContext</var>.</p></li>

<li id="about-blank-origin"><p>Let <var>origin</var> be the result of <span>determining the
origin</span> given <var>browsingContext</var>, <code>about:blank</code>,
Expand Down Expand Up @@ -81735,10 +81735,10 @@ interface <dfn>BarProp</dfn> {

<hr>

<p>To <dfn data-x="determining active sandboxing flags">determine active sandboxing flags</dfn>
for a <span data-x="concept-document-bc">browsing context</span> <var>browsing context</var> given
an optional <var>navigationResource</var>, return the union of the flags that are present in the
following <span data-x="sandboxing flag set">sandboxing flag sets</span>:</p>
<p>To <dfn data-x="determining sandboxing flags">determine sandboxing flags</dfn> for a <span
data-x="concept-document-bc">browsing context</span> <var>browsing context</var>, return the union
of the flags that are present in the following <span data-x="sandboxing flag set">sandboxing flag
sets</span>:</p>

<ul>
<li><p>If <var>browsing context</var> is a <span>top-level browsing context</span>, then: the
Expand All @@ -81750,9 +81750,6 @@ interface <dfn>BarProp</dfn> {
<li><p>If <var>browsing context</var> is a <span>nested browsing context</span>, then: the
flags set on the <span>parent browsing context</span>'s <span>active document</span>'s
<span>active sandboxing flag set</span>.</p></li>

<li><p>If <var>navigationResource</var> is given, then: the flags set on
<var>navigationResource</var>'s <span>forced sandboxing flag set</span>.</p></li>
</ul>


Expand Down Expand Up @@ -83558,6 +83555,9 @@ interface <dfn>Location</dfn> { // but see also <a href="#the-location-interface
data-x="concept-form-submit">form submission algorithm</span>, and "<code data-x="">other</code>"
otherwise.</p></li>

<li><p>Let <var>sandboxFlags</var> be the result of <span>determining sandboxing flags</span>
given <var>browsingContext</var>.</p></li>

<li><p>Return to whatever algorithm invoked the navigation steps and continue running these steps
<span>in parallel</span>.</p></li>

Expand All @@ -83571,7 +83571,7 @@ interface <dfn>Location</dfn> { // but see also <a href="#the-location-interface
<dt>If <var>resource</var> is a <span data-x="concept-response">response</span></dt>
<dd><p>Run <span>process a navigate response</span> with null, <var>resource</var>,
<var>navigationType</var>, the <span>source browsing context</span>,
<var>browsingContext</var>, <var>incumbentNavigationOrigin</var>, and
<var>browsingContext</var>, <var>sandboxFlags</var>, <var>incumbentNavigationOrigin</var>, and
<var>activeDocumentNavigationOrigin</var>.</p></dd>

<dt>If <var>resource</var> is a <span data-x="concept-request">request</span> whose <span
Expand All @@ -83589,8 +83589,8 @@ interface <dfn>Location</dfn> { // but see also <a href="#the-location-interface

<li><p>Run <span>process a navigate response</span> with <var>resource</var>,
<var>response</var>, <var>navigationType</var>, the <span>source browsing context</span>,
<var>browsingContext</var>, <var>incumbentNavigationOrigin</var>, and
<var>activeDocumentNavigationOrigin</var>.</p></li>
<var>browsingContext</var>, <var>sandboxFlags</var>, <var>incumbentNavigationOrigin</var>,
and <var>activeDocumentNavigationOrigin</var>.</p></li>
</ol>

<p class="example">So for example a <span data-x="javascript
Expand Down Expand Up @@ -83637,7 +83637,8 @@ interface <dfn>Location</dfn> { // but see also <a href="#the-location-interface
is a <span>fetch scheme</span></dt>
<dd><p>Run <span>process a navigate fetch</span> given <var>resource</var>, the <span>source
browsing context</span>, <var>browsingContext</var>, <var>navigationType</var>,
<var>incumbentNavigationOrigin</var>, and <var>activeDocumentNavigationOrigin</var>.</p></dd>
<var>sandboxFlags</var>, <var>incumbentNavigationOrigin</var>, and
<var>activeDocumentNavigationOrigin</var>.</p></dd>

<dt>Otherwise, <var>resource</var> is a <span data-x="concept-request">request</span> whose
<span data-x="concept-request-url">url</span>'s <span data-x="concept-url-scheme">scheme</span>
Expand Down Expand Up @@ -83850,9 +83851,10 @@ interface <dfn>Location</dfn> { // but see also <a href="#the-location-interface
data-x="concept-request">request</span> <var>request</var>, a <span
data-x="concept-response">response</span> <var>response</var>, a string <var>navigationType</var>,
two <span data-x="browsing context">browsing contexts</span> <var>source</var> and
<var>browsingContext</var>, two <span data-x="origin">origins</span>
<var>incumbentNavigationOrigin</var> and <var>activeDocumentNavigationOrigin</var>, and an
optional <span>environment</span> <var>reservedEnvironment</var>, run these steps:</p>
<var>browsingContext</var>, a <span>sandboxing flag set</span> <var>sandboxFlags</var>, two
<span data-x="origin">origins</span> <var>incumbentNavigationOrigin</var> and
<var>activeDocumentNavigationOrigin</var>, and an optional <span>environment</span>
<var>reservedEnvironment</var>, run these steps:</p>

<ol>
<li>
Expand Down Expand Up @@ -83904,15 +83906,15 @@ interface <dfn>Location</dfn> { // but see also <a href="#the-location-interface
<dt>an <span>HTML MIME type</span></dt>
<dd>Follow the steps given in the <span data-x="navigate-html">HTML document</span> section
providing <var>browsingContext</var>, <var>request</var>, <var>response</var>,
<var>incumbentNavigationOrigin</var>, and <var>activeDocumentNavigationOrigin</var>. Once the
steps have completed, return.</dd>
<var>sandboxFlags</var>, <var>incumbentNavigationOrigin</var>, and
<var>activeDocumentNavigationOrigin</var>. Once the steps have completed, return.</dd>

<dt>an <span>XML MIME type</span> that is not an <span>explicitly supported XML MIME
type</span></dt>
<dd>Follow the steps given in the <span data-x="navigate-xml">XML document</span> section
providing <var>browsingContext</var>, <var>type</var>, <var>request</var>, <var>response</var>,
<var>incumbentNavigationOrigin</var>, and <var>activeDocumentNavigationOrigin</var>. Once the
steps have completed, return.</dd>
<var>sandboxFlags</var>, <var>incumbentNavigationOrigin</var>, and
<var>activeDocumentNavigationOrigin</var>. Once the steps have completed, return.</dd>

<dt>a <span>JavaScript MIME type</span></dt>
<dt>a <span>JSON MIME type</span> that is not an <span>explicitly supported JSON MIME
Expand All @@ -83923,28 +83925,28 @@ interface <dfn>Location</dfn> { // but see also <a href="#the-location-interface
<dt>"<code>text/vtt</code>"</dt>
<dd>Follow the steps given in the <span data-x="navigate-text">plain text file</span> section
providing <var>browsingContext</var>, <var>type</var>, <var>request</var>, <var>response</var>,
<var>incumbentNavigationOrigin</var>, and <var>activeDocumentNavigationOrigin</var>. Once the
steps have completed, return.</dd>
<var>sandboxFlags</var>, <var>incumbentNavigationOrigin</var>, and
<var>activeDocumentNavigationOrigin</var>. Once the steps have completed, return.</dd>

<dt>"<code>multipart/x-mixed-replace</code>"</dt>
<dd>Follow the steps given in the <span
data-x="navigate-multipart-x-mixed-replace">multipart/x-mixed-replace</span> section providing
<var>browsingContext</var>, <var>type</var>, <var>request</var>, <var>response</var>,
<var>incumbentNavigationOrigin</var>, and <var>activeDocumentNavigationOrigin</var>. Once the
steps have completed, return.</dd>
<var>sandboxFlags</var>, <var>incumbentNavigationOrigin</var>, and
<var>activeDocumentNavigationOrigin</var>. Once the steps have completed, return.</dd>

<dt>A supported image, video, or audio type</dt>
<dd>Follow the steps given in the <span data-x="navigate-media">media</span> section providing
<var>browsingContext</var>, <var>type</var>, <var>request</var>, <var>response</var>,
<var>incumbentNavigationOrigin</var>, and <var>activeDocumentNavigationOrigin</var>. Once the
steps have completed, return.</dd>
<var>sandboxFlags</var>, <var>incumbentNavigationOrigin</var>, and
<var>activeDocumentNavigationOrigin</var>. Once the steps have completed, return.</dd>

<dt>A type that will use an external application to render the content in
<var>browsingContext</var></dt>
<dd>Follow the steps given in the <span data-x="navigate-plugin">plugin</span> section
providing <var>browsingContext</var>, <var>type</var>, <var>request</var>, <var>response</var>,
<var>incumbentNavigationOrigin</var>, and <var>activeDocumentNavigationOrigin</var>. Once the
steps have completed, return.</dd>
<var>sandboxFlags</var>, <var>incumbentNavigationOrigin</var>, and
<var>activeDocumentNavigationOrigin</var>. Once the steps have completed, return.</dd>
</dl>

<p>An <dfn>explicitly supported XML MIME type</dfn> is an <span>XML MIME type</span> for which
Expand Down Expand Up @@ -84115,18 +84117,18 @@ interface <dfn>Location</dfn> { // but see also <a href="#the-location-interface
data-x="concept-document-content-type">content type</span> <var>contentType</var>, a <span
data-x="concept-request">request</span> <var>request</var>, a <span
data-x="concept-response">response</span> <var>response</var>, a <span data-x="browsing
context">browsing context</span> <var>browsingContext</var>, two <span
data-x="origin">origins</span> <var>incumbentNavigationOrigin</var>,
<var>activeDocumentNavigationOrigin</var>, and an optional <span>environment</span>
<var>reservedEnvironment</var>:</p>
context">browsing context</span> <var>browsingContext</var>, a <span>sandboxing flag set</span>
<var>sandboxFlags</var>, two <span data-x="origin">origins</span>
<var>incumbentNavigationOrigin</var>, <var>activeDocumentNavigationOrigin</var>, and an optional
<span>environment</span> <var>reservedEnvironment</var>:</p>

<ol>
<li><p>Let <var>sandboxFlags</var> be the result of <span>determining active sandboxing
flags</span> given <var>browsingContext</var> and <var>response</var>.</p></li>
<li><p>Let <var>finalSandboxFlags</var> be the union of <var>sandboxFlags</var> and
<var>response</var>'s <span>forced sandboxing flag set</span>.</p></li>

<li><p>Let <var>origin</var> be the result of <span>determining the origin</span> given
<var>browsingContext</var>, <var>request's</var> <span data-x="concept-request-url">url</span>,
<var>sandboxFlags</var>, <var>incumbentNavigationOrigin</var>, and
<var>finalSandboxFlags</var>, <var>incumbentNavigationOrigin</var>, and
<var>activeDocumentNavigationOrigin</var>.

<li>
Expand Down Expand Up @@ -84188,7 +84190,7 @@ interface <dfn>Location</dfn> { // but see also <a href="#the-location-interface
data-x="concept-document-content-type">content type</span> is <var>contentType</var>,
<span>origin</span> is <var>origin</var>, <span data-x="concept-document-feature-policy">feature
policy</span> is <var>featurePolicy</var>, and <span>active sandboxing flag set</span> is
<var>sandboxFlags</var>.</p></li>
<var>finalSandboxFlags</var>.</p></li>

<li id="set-the-document's-address"><p>If <var>request</var> is non-null, then set
<var>document</var>'s <span data-x="concept-document-url">URL</span> to <var>request</var>'s
Expand Down Expand Up @@ -84411,14 +84413,15 @@ new PaymentRequest(&hellip;); // Allowed to use

<p>When <dfn data-x="navigate-html">an HTML document is to be loaded</dfn> in a <span>browsing
context</span>, provided <var>browsingContext</var>, <var>request</var>, <var>response</var>,
<var>incumbentNavigationOrigin</var>, and <var>activeDocumentNavigationOrigin</var>, the user
agent must <span>queue a task</span> on the <span>networking task source</span> to:</p>
<var>sandboxFlags</var>, <var>incumbentNavigationOrigin</var>, and
<var>activeDocumentNavigationOrigin</var>, the user agent must <span>queue a task</span> on the
<span>networking task source</span> to:</p>

<ol>
<li><p>Let <var>document</var> be the result of <span
data-x="create-the-document-object">creating and initializing a <code>Document</code>
object</span> providing "<code data-x="">html</code>", "<code data-x="">text/html</code>",
<var>request</var>, <var>response</var>, <var>browsingContext</var>,
<var>request</var>, <var>response</var>, <var>browsingContext</var>, <var>sandboxFlags</var>,
<var>incumbentNavigationOrigin</var>, and <var>activeDocumentNavigationOrigin</var>.</p></li>

<li>
Expand Down Expand Up @@ -84453,13 +84456,13 @@ new PaymentRequest(&hellip;); // Allowed to use
<h4 id="read-xml"><dfn data-x="navigate-xml">Page load processing model for XML files</dfn></h4>

<p>When faced with displaying an XML file inline, provided <var>browsingContext</var>,
<var>request</var>, <var>response</var>, <var>incumbentNavigationOrigin</var>, and
<var>activeDocumentNavigationOrigin</var>, user agents must follow the requirements defined in
<cite>XML</cite> and <cite>Namespaces in XML</cite>, <cite>XML Media Types</cite>,
<cite>DOM</cite>, and other relevant specifications to <span
<var>request</var>, <var>response</var>, <var>sandboxFlags</var>,
<var>incumbentNavigationOrigin</var>, and <var>activeDocumentNavigationOrigin</var>, user agents
must follow the requirements defined in <cite>XML</cite> and <cite>Namespaces in XML</cite>,
<cite>XML Media Types</cite>, <cite>DOM</cite>, and other relevant specifications to <span
data-x="create-the-document-object">create and initialize a <code>Document</code> object</span>
providing "<code data-x="">xml</code>", <var>type</var>, <var>request</var>, <var>response</var>,
<var>browsingContext</var>, <var>incumbentNavigationOrigin</var>, and
<var>browsingContext</var>, <var>sandboxFlags</var>, <var>incumbentNavigationOrigin</var>, and
<var>activeDocumentNavigationOrigin</var>. It must also create and a corresponding <span>XML
parser</span>. <ref spec=XML> <ref spec=XMLNS> <ref spec=RFC7303> <ref spec=DOM></p>

Expand Down Expand Up @@ -84506,16 +84509,16 @@ new PaymentRequest(&hellip;); // Allowed to use
<h4 id="read-text"><dfn data-x="navigate-text">Page load processing model for text files</dfn></h4>

<p>When a plain text document is to be loaded in a <span>browsing context</span>, provided
<var>browsingContext</var>, <var>request</var>, <var>response</var>,
<var>browsingContext</var>, <var>request</var>, <var>response</var>, <var>sandboxFlags</var>,
<var>incumbentNavigationOrigin</var>, and <var>activeDocumentNavigationOrigin</var>, the user
agent must <span>queue a task</span> on the <span>networking task source</span> to:

<ol>
<li><p>Let <var>document</var> be the result of <span
data-x="create-the-document-object">creating and initialize a <code>Document</code> object</span>
providing "<code data-x="">html</code>", <var>type</var>, <var>request</var>,
<var>response</var>, <var>browsingContext</var>, <var>incumbentNavigationOrigin</var>,
and <var>activeDocumentNavigationOrigin</var>.</p></li>
<var>response</var>, <var>browsingContext</var>, <var>sandboxFlags</var>,
<var>incumbentNavigationOrigin</var>, and <var>activeDocumentNavigationOrigin</var>.</p></li>

<li><p>Create an <span>HTML parser</span> and associate it with the <var>document</var>. Act as
if the tokenizer had emitted a start tag token with the tag name "pre" followed by a single
Expand Down Expand Up @@ -84584,15 +84587,15 @@ new PaymentRequest(&hellip;); // Allowed to use

<p>When an image, video, or audio resource is to be loaded in a <span>browsing context</span>,
provided <var>browsingContext</var>, <var>request</var>, <var>response</var>,
<var>incumbentNavigationOrigin</var>, and <var>activeDocumentNavigationOrigin</var>, the user
agent should:
<var>sandboxFlags</var>, <var>incumbentNavigationOrigin</var>, and
<var>activeDocumentNavigationOrigin</var>, the user agent should:

<ol>
<li><p>Let <var>document</var> be the result of <span
data-x="create-the-document-object">creating and initialize a <code>Document</code> object</span>
providing "<code data-x="">html</code>", <var>type</var>, <var>request</var>,
<var>response</var>, <var>browsingContext</var>, <var>incumbentNavigationOrigin</var>, and
<var>activeDocumentNavigationOrigin</var>.</p></li>
<var>response</var>, <var>browsingContext</var>, <var>sandboxFlags</var>,
<var>incumbentNavigationOrigin</var>, and <var>activeDocumentNavigationOrigin</var>.</p></li>

<li><p>Append an <code>html</code> element to <var>document</var>.</p></li>

Expand Down Expand Up @@ -84650,15 +84653,15 @@ new PaymentRequest(&hellip;); // Allowed to use

<p>When a resource that requires an external resource to be rendered is to be loaded in a
<span>browsing context</span>, provided <var>browsingContext</var>, <var>request</var>,
<var>response</var>, <var>incumbentNavigationOrigin</var>, and
<var>response</var>, <var>sandboxFlags</var>, <var>incumbentNavigationOrigin</var>, and
<var>activeDocumentNavigationOrigin</var>, the user agent should:

<ol>
<li><p>Let <var>document</var> be the result of <span
data-x="create-the-document-object">creating and initialize a <code>Document</code> object</span>
providing "<code data-x="">html</code>", <var>type</var>, <var>request</var>,
<var>response</var>, <var>browsingContext</var>, <var>incumbentNavigationOrigin</var>, and
<var>activeDocumentNavigationOrigin</var>.</p></li>
<var>response</var>, <var>browsingContext</var>, <var>sandboxFlags</var>,
<var>incumbentNavigationOrigin</var>, and <var>activeDocumentNavigationOrigin</var>.</p></li>

<li><p>Mark <var>document</var> as being a <dfn>plugin document</dfn></p></li>

Expand Down Expand Up @@ -84706,10 +84709,10 @@ new PaymentRequest(&hellip;); // Allowed to use
<p>When the user agent is to display a user agent page inline in a <span>browsing context</span>,
the user agent should <span data-x="create-the-document-object">create and initialize a
<code>Document</code> object</span> providing "<code data-x="">html</code>", "<code
data-x="">text/html</code>", null, null, <var>browsingContext</var>, null, and null, and then
either associate that <code>Document</code> with a custom rendering that is not rendered using the
normal <code>Document</code> rendering rules, or mutate that <code>Document</code> until it
represents the content the user agent wants to render.</p>
data-x="">text/html</code>", null, null, <var>browsingContext</var>, an empty set, null, and null,
and then either associate that <code>Document</code> with a custom rendering that is not rendered
using the normal <code>Document</code> rendering rules, or mutate that <code>Document</code> until
it represents the content the user agent wants to render.</p>

<!-- next two paragraphs are similar to the navigate-text section, keep them in sync -->

Expand Down