How to execute script targeting another extension?

Question

From within a Chrome extension, is there any way I can execute a script into another open extension? I just want to click a specific button whenever a different extension opens.

I tried using chrome scripting APIs:

chrome.scripting.executeScript({
   target: { tabId: tab.id }, // tab id relative the other open extension
   function: injectIntoAnotherExtension
});

function injectIntoAnotherExtension() {
    document.getElementById('some-button').click();
}

At first I got the error:

Error: Cannot access a chrome-extension:// URL of different extension

After enabling the Extensions on chrome:// URLs flag (chrome://flags/#extensions-on-chrome-urls), I now get:

Error: Cannot access contents of url "chrome-extension://foo/bar/xyz.html". Extension manifest must request permission to access this host.

Here are my manifest permissions, which should allow all urls:

"host_permissions": [
   "<all-urls>"
]

I also tried with *://*/* or chrome-extensions://*/* but with no success.

Related questions: this and this.

Any way around it? Or is there any other way to automatically click a button in another running extension?

Thanks!

Either use chrome.debugger API (can be used to automate access) or write a devtools panel where you will use chrome.devtools.inspectedWindow.eval while devtools is open on that extension's page and your panel is selected. — woxxom
– woxxom, Commented Nov 8, 2021 at 8:44

John Doe · Accepted Answer · 2021-11-08 13:50:17Z

1

Thanks to @wOxxOm, I got it working with:

chrome.debugger.attach({
   tabId: tab.id
}, '1.0', function() {
   chrome.debugger.sendCommand({
      tabId: tab.id
   }, "Runtime.evaluate", { expression: 
      "document.getElementById('some-button').click();" 
   }, function(response) {
      console.log(response);
   });
});

answered Nov 8, 2021 at 13:50

John Doe

14111 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

How to execute script targeting another extension?

1 Answer 1

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related