2020-12-12 17:35:56 +00:00
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# Yomichan Permissions
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* `<all_urls>` <br>
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Yomichan requires access to all URLs in order to run scripts to scan text and show the definitions popup,
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request audio for playback and download, and connect with Anki.
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* `storage` and `unlimitedStorage` <br>
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Yomichan uses storage permissions in order to save extension settings and dictionary data.
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`unlimitedStorage` is used to help prevent web browsers from unexpectedly
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deleting dictionary data.
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2021-01-03 20:29:29 +00:00
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* `webRequest` and `webRequestBlocking` _(Manifest V2 only)_ <br>
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2020-12-12 17:35:56 +00:00
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Yomichan uses these permissions to ensure certain requests have valid and secure headers.
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This sometimes involves removing or changing the `Origin` request header,
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as this can be used to fingerprint browser configuration.
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2021-01-03 20:29:29 +00:00
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* `declarativeNetRequest` _(Manifest V3 only)_ <br>
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Yomichan uses this permission to ensure certain requests have valid and secure headers.
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This sometimes involves removing or changing the `Origin` request header,
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as this can be used to fingerprint browser configuration.
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* `scripting` _(Manifest V3 only)_ <br>
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Yomichan will sometimes need to inject stylesheets into webpages in order to
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properly display the search popup.
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2020-12-12 17:35:56 +00:00
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* `clipboardWrite` <br>
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Yomichan supports simulating the `Ctrl+C` (copy to clipboard) keyboard shortcut
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when a definitions popup is open and focused.
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* `clipboardRead` (optional) <br>
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Yomichan supports automatically opening a search window when Japanese text is copied to the clipboard
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while the browser is running, depending on how certain settings are configured.
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This allows Yomichan to support scanning text from external applications, provided there is a way
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to copy text from those applications to the clipboard.
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2021-02-08 22:52:41 +00:00
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* `nativeMessaging` (optional on Chrome) <br>
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Yomichan has the ability to communicate with an optional native messaging component in order to support
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parsing large blocks of Japanese text using
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[MeCab](https://en.wikipedia.org/wiki/MeCab).
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The installation of this component is optional and is not included by default.
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This permission is optional on Chrome, but required on Firefox, because Firefox does not permit it to be optional.
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