modifyHeaders safari extension not works

Question

byeongsu_park OP

Created Jul ’24

Replies 2

Boosts 0

Participants 2

Does safari support modification of request headers by using declarativeNetRequest?

I want to change the sec-fetch-dest, sec-fetch-mode value in request header using declarativeNetRequest.
So I just set the manifest value as follows.

{
    "manifest_version": 3,
    ...

    "name": "modifyHeader test",
    "description": "sample extension",
    "version": "1.0",
    ...
    
    "permissions": [
        "declarativeNetRequest",
        "declarativeNetRequestWithHostAccess",
        "activeTab"
    ],
    
    "declarative_net_request": {
      "rule_resources": [
        {
          "id": "ruleset_for_test",
          "enabled": true,
          "path": "test_rules.json"
        }
      ]
    },
    
    "host_permissions": [
        "<all_urls>"
    ],

    ....
    "content_scripts": [{
        "js": [ "content.js" ],
        "matches": [ "*://www.acmicpc.net/*" ]
    }],

    ....

}

And test_rules.json is as follows

{
    "id": 1,
    "priority": 1,
    "action": { "type": "modifyHeaders",
        "requestHeaders": [
            { "header": "sec-fetch-dest", "operation": "set", "value": "document" },
            { "header": "sec-fetch-mode", "operation": "set", "value": "navigate" }
        ]
    },
    "condition": { "domains":["acmicpc.net"], "resourceTypes": ["xmlhttprequest"] }
}

However, safari does not change the request header.
So I just wonder does safari allow modification of headers through declarativeNetRequest.

Boost

Answer 1

Systems Engineer OP

Apple

Aug ’24

In order for an extension to modify request headers, Safari requires that the extension has access to the domain of the request. Have you granted the extension access to the domain for the website you wish modify requests? If you have and you're still experiencing issues, please use Feedback Assistant to file Feedback with a sample project and information about the version of Safari you're using. Once you have that feedback filed, please share the ID here so we can follow up.

0

Answer 2

byeongsu_park OP

Aug ’24

Yes, I granted the extension access to the domain for the website.

0