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Add trusted-types-eval source expression for script-src #665

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Add trusted-types-eval source expression for script-src #665

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22 changes: 16 additions & 6 deletions index.bs
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Original file line number Diff line number Diff line change
Expand Up @@ -699,7 +699,7 @@ spec: WebRTC; urlPrefix: https://www.w3.org/TR/webrtc/
<dfn>keyword-source</dfn> = "<dfn>'self'</dfn>" / "<dfn>'unsafe-inline'</dfn>" / "<dfn>'unsafe-eval'</dfn>"
/ "<dfn>'strict-dynamic'</dfn>" / "<dfn>'unsafe-hashes'</dfn>" /
/ "<dfn>'report-sample'</dfn>" / "<dfn>'unsafe-allow-redirects'</dfn>"
/ "<dfn>'wasm-unsafe-eval'</dfn>"
/ "<dfn>'wasm-unsafe-eval'</dfn>" / "<dfn>'trusted-types-eval'</dfn>"

ISSUE: Bikeshed `unsafe-allow-redirects`.

Expand Down Expand Up @@ -1456,6 +1456,8 @@ spec: WebRTC; urlPrefix: https://www.w3.org/TR/webrtc/

1. Let |sourceString| be |codeString|.

1. Let |requireTrustedTypes| be `false`.

1. Else:

1. Let |compilationSink| be "Function" if |compilationType| is "`FUNCTION`", and "Eval" otherwise.
Expand Down Expand Up @@ -1504,9 +1506,17 @@ spec: WebRTC; urlPrefix: https://www.w3.org/TR/webrtc/
Otherwise if |policy| contains a [=directive=] whose [=directive/name=] is
"`default-src`", then set |source-list| to that directive's [=directive/value=].

3. If |source-list| is not null, and does not contain a [=source expression=] which is
an [=ASCII case-insensitive=] match for the string "<a grammar>`'unsafe-eval'`</a>",
then:
1. If |source-list| is not null:

1. Let |trustedTypesRequired| be the result of executing [$Does sink type require trusted types?$], with
|realm|, `'script'`, and `false`.

1. If |trustedTypesRequired| is `true` and |source-list| contains a [=source expression=] which is an
[=ASCII case-insensitive=] match for the string "<a grammar>`'trusted-types-eval'`</a>", then skip the
following steps.

1. If |source-list| contains a [=source expression=] which is an [=ASCII case-insensitive=] match for the
string "<a grammar>`'unsafe-eval'`</a>", then skip the following steps.

1. Let |violation| be the result of executing [[#create-violation-for-global]] on
|global|, |policy|, and "`script-src`".
Expand Down Expand Up @@ -2782,8 +2792,8 @@ this algorithm returns normally if compilation is allowed, and throws a
<a grammar>nonce-source</a> or a <a grammar>hash-source</a> that matches
the inline block.

4. The following JavaScript execution sinks are gated on the "`unsafe-eval`"
source expression:
4. The following JavaScript execution sinks are gated on the "`unsafe-eval`" and "`trusted-types-eval`"
source expressions:

* {{eval()}}
* {{Function()}}
Expand Down
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