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COOP and COEP for local scheme URLs #5403

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yutakahirano opened this issue Mar 26, 2020 · 4 comments
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COOP and COEP for local scheme URLs #5403

yutakahirano opened this issue Mar 26, 2020 · 4 comments
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topic: cross-origin-embedder-policy Issues and ideas around the new "require CORP for subresource requests and frames and etc" proposal. topic: cross-origin-opener-policy Issues and ideas around the new "inverse of rel=noopener" header.

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@yutakahirano
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At https://crbug.com/1063523 and https://crbug.com/1057296, @shhnjk wants to put COOP and COEP of the creator context to blob URLs. This is related to w3c/FileAPI#142 and #4926. There also is a Firefox bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1570889
@annevk
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annevk commented Mar 26, 2020

This is already tracked by #4916 and #5198, right?

@yutakahirano
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Aren't those discussions about inheritance between contexts? @shhnjk's proposal (IIUC) is attaching creator's COOP/COEP to blob URLs, which means when we post such a URL to another context and then initiate a navigation from that context, then the policy of the blob URL (= the policy of the original creator) is used, rather than the policy of that "another context".

@annevk annevk added topic: cross-origin-opener-policy Issues and ideas around the new "inverse of rel=noopener" header. topic: cross-origin-embedder-policy Issues and ideas around the new "require CORP for subresource requests and frames and etc" proposal. labels Apr 1, 2020
@annevk
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annevk commented Apr 1, 2020

#5198 (comment) specifically covers those scenarios. I think that's ideally how blob: URLs behave, but getting there (and ensuring it's implemented) takes some effort.

@yutakahirano
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Thank you very much. Let's close this.

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topic: cross-origin-embedder-policy Issues and ideas around the new "require CORP for subresource requests and frames and etc" proposal. topic: cross-origin-opener-policy Issues and ideas around the new "inverse of rel=noopener" header.
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