226440 2021-05-30 16:59:22 -0700 Blob url downloads fail when triggered from webextension 2024-09-06 12:17:42 -0700 1 1 1 Unclassified WebKit WebKit Misc. Safari 14 Mac (Apple Silicon) macOS 11 RESOLVED FIXED https://bugs.webkit.org/show_bug.cgi?id=216918 InRadar P2 Normal --- 1 victorhlin pascoe achristensen karlcow pascoe timothy webkit-bug-importer youennf oldest_to_newest 1765271 0 victorhlin 2021-05-30 16:59:22 -0700 Blob url downloads fail when triggered from a webextension tab. The tab is created with `chrome.tabs.create({ url: /wordlist.html })`. wordlist.html embeds a script with the following code to trigger downloads when clicking on a button: ``` let saveBlob = new Blob(['content'], { "type": "text/plain" }); let a = document.getElementById('savelink'); // tab html contains "<a id="savelink" download="download.txt"></a>" const blobLink = URL.createObjectURL(saveBlob); a.href = blobLink; a.click(); ``` This opens in the existing tab (replacing its content) and fails with the following safari error: ``` Safari can’t open the page “blob:safari-web-extension://20101d16-cc55-4a3f-a307-a03b6e2df273/07f5a98e-8fbd-409e-9113-58afe3c748c8”. The error is: “The operation couldn’t be completed. (WebKitBlobResource error 1.)” (WebKitBlobResource:1) ``` I found some related bugs on non-extension pages, e.g https://bugs.webkit.org/show_bug.cgi?id=190351 (usage of target="_blank"), https://bugs.webkit.org/show_bug.cgi?id=211234 (bugs with immediately revoked object urls) , The presence of the `target` attribute doesn't seem to matter, and it seems like whatever was fixed in the latter bug doesn't apply to this extension tab case. 1767259 1 webkit-bug-importer 2021-06-06 17:00:22 -0700 <rdar://problem/78929424> 2057946 2 pascoe 2024-09-05 10:04:16 -0700 https://github.com/WebKit/WebKit/pull/33167/ 2057963 3 ews-feeder 2024-09-05 10:36:02 -0700 Committed 283220@main (61868ae02c5f): <https://commits.webkit.org/283220@main> Reviewed commits have been landed. Closing PR #33167 and removing active labels. 2058258 4 ews-feeder 2024-09-06 12:17:42 -0700 Committed 280938.310@safari-7619-branch (eb5a1e97b064): <https://commits.webkit.org/280938.310@safari-7619-branch> Reviewed commits have been landed. Closing PR #1699 and removing active labels.