Clipboard access failed

[schnuckovic]

This stopped working for me.

When I try to decrypt: I'm getting 'Clipboard access failed' after entering the password.

When I try to encrypt the highlighted text: The tags are wrapped around the text, but no encryption happens, no question for setting a password.

This happens with Safari and Firefox.

Thanks!

[virk]

I also have the "Clipboard access failed" mistake, when I use Safari in Monterey 12.3.1. With Google-Chrome it works.

[splitbrain]

please provide more information about your setup (are you using https?) and any errors found in the JS error console

[virk]

I tested this plugin again with Safari 16.0 with Monterey 12.6. When I click on an encrypted word and have put in the password, java console reports:

AES-CBC and AES-CTR do not provide authentication by default, and implementing it manually can result in minor, but serious mistakes. We recommended using authenticated encryption like AES-GCM to protect against chosen-ciphertext attacks.

[dregad]

When I try to decrypt: I'm getting 'Clipboard access failed' after entering the password.

I'm seeing this as well.

Nothing in the console, except for the same message reported by @virk in https://github.com/cosmocode/dokuwiki-plugin-encryptedpasswords/issues/2#issuecomment-1268351018 above, which occurs right after clicking OK on the passphrase entry dialog.

Safari 16.6, MacOS Ventura 13.5.2, DokuWiki 2023-04-04a, encryptedpasswords 2023-06-19, using https.

Note: problem is not reproducible (i.e. everything works OK) using Firefox 102.11.0esr on Windows (same Dokuwiki instance).

@splitbrain I can consistently reproduce this error, so if you tell me where to look and what to do, maybe I can help you diagnose it.

[virk]

Here I still experience the same problem with Safari 17.0 and Ventura 13.6 on Apple Mac.

[splitbrain]

The issue is probably related to this:

• https://stackoverflow.com/questions/66312944/javascript-clipboard-api-write-does-not-work-in-safari
• https://developer.apple.com/forums/thread/691873

I added dumping the caught error to the console, you can check if you get a NotAllowedError (I expect you do).

From what I understand, Safari only allows clipboard actions with in user interaction event handlers, but is too dumb to understand that actually happens in such a handler. I'm not sure I 100% understand the workarounds outlined above and I don't have access to a Safari browser to test. If someone can provide a PR, I'm happy to merge it.

[dregad]

@splitbrain thanks for the update. I confirm that I do get a NotAllowedError as per your expectation. Here's the actual output from the javascriptconsole

[Log] Object (js.php, line 1)

isTrigger: 3

jQuery36401514503719997845: true

namespace: ""

result: undefined

rnamespace: null

target: <div class="encryptedpasswords-prompt">

timeStamp: 1703232078001

type: "dialogbeforeclose"

Object Prototype

[Error] NotAllowedError: The request is not allowed by the user agent or the platform in the current context, possibly because the user denied permission.
writeText
(anonymous function) — js.php:12:3805

    (anonymous function) (js.php:12:3896)

I do not have time to invest for further analysis and attempt to fix this, sorry no PR from me.

[dregad]

This was bugging me so I had a closer look.

As I understand it, the error occurs because Safari does not allow navigator.clipboard.write() in an asynchronous context. The workaround is to place all async operations in a promise whose result is assigned to a ClipboardItem (reference).

I (kind of) managed to make it work (see PR #17), but my javascript skills are quite limited and I don't know how to properly handle errors:

• when user cancels the passphrase dialog it copies an empty string to clipboard, IMO it shouldn't
• when invalid passphrase is provided, the NotAllowedError is triggered but again it shouldn't

I did not test this with other browsers.

Maybe you can pick it up from there.