media permission denied [bug]

[Zhiqiang-Wu]

Describe the bug

Unable to call camera，unauthorized.
No related items found in devtools.

Reproduction

No response

Expected behavior

No response

Platform and versions

window10 x64
pnpm 7
nodejs 16
tauri 1.0.0

Stack trace

No response

Additional context

No response

[amrbashir]

please share the full tauri info and if possible a minimal repro.

[Zhiqiang-Wu]

demo.zip

start script:

umi dev

tauri dev

---

1、open media -> select reject -> console.log(err);

2、open media -> console.log(err); Immediate failure.

Unable to reacquire permissions.

Permission can be reset in the edge browser.

But webview2 can`t.

---

Reset site permissions in edge browser.

[amrbashir]

users can delete C:\Users\<user-name>\AppData\Local\<your-app-bundle-identifieer>\EBWebView directory and it will reset the permissions state, so you can prompt them for it again.

[Interpause]

I don't think that is a proper solution, it certainly isn't user-friendly to request the user to do the above to reset permission state.

[FabianLars]

@Interpause You can handle that for your users in rust too.
And i know that's not what you were aiming at, the problem here is that actual solutions are blocked by MicrosoftEdge/WebView2Feedback#2427 :/

Edit: Since this issue was just linked to from a really extensive issue a short additional note: In case someone wonders why we don't work around the missing permissions api by hooking into the PermissionRequested event (which by itself would be kinda annoying imo), the reason is: it doesn't work, see MicrosoftEdge/WebView2Feedback#2672

[nishitha-burman]

Hello, we recently added the new experimental Permission Management APIs. Can you check if this meets your needs? MicrosoftEdge/WebView2Feedback#2427 (comment) Thanks!

[fortserious]

Hi @FabianLars , now that both of those WebView2Feedback issues have been resolved and the Permission Management APIs have been released, is it possible to hook into these APIs to reset permission state while the WebView2 app is open? The Rust solution won't work for us, as we can't expect our users to close down the app and delete the EBWebView directory themselves.

[FabianLars]

if you're using v2, yes (in v1 the webview bindings are too old). Then you can use the mentioned SetPermissionState in with_webview (via the bindings). If all this is new to you, it would look something like this, just to get a feel for it.

[WeiChens]

I also have OCD, it took me several days to find it

tauri version v2
dependencies：
webview2-com = "0.31.0"
windows = "0.57.0"

use webview2_com::Microsoft::Web::WebView2::Win32::{
    ICoreWebView2Profile4, ICoreWebView2_13, COREWEBVIEW2_PERMISSION_KIND_MICROPHONE,
    COREWEBVIEW2_PERMISSION_STATE_DEFAULT,
};
use windows::core::{Interface, PCWSTR};

/**
 *
 * Reset microphone permissions
 */
#[tauri::command]
fn reset_permission(origin: &str, app: AppHandle) {
    let webview = app.get_webview_window("main").unwrap();
    let mut origin = origin.to_string();
    origin.push('\0');
    let origin = origin.encode_utf16().collect::<Vec<u16>>();
    webview
        .with_webview(move |webview| unsafe {
            let core = webview.controller().CoreWebView2().unwrap();
            let core = Interface::cast::<ICoreWebView2_13>(&core).unwrap();
            let profile = core.Profile().unwrap();
            let profile = Interface::cast::<ICoreWebView2Profile4>(&profile).unwrap();
            let origin = PCWSTR::from_raw(origin.as_ptr());
            profile
                .SetPermissionState(
                    COREWEBVIEW2_PERMISSION_KIND_MICROPHONE,
                    origin,
                    COREWEBVIEW2_PERMISSION_STATE_DEFAULT,
                    None,
                )
                .unwrap();
        })
        .unwrap();
}

[rasteiner]

@WeiChens Thank you very much 😊

In my case I used COREWEBVIEW2_PERMISSION_STATE_ALLOW.

For completeness sake:

await invoke('reset_permission', { origin: window.origin });
const devices = await navigator.mediaDevices.enumerateDevices();
console.log('Weeeee', devices);

[kamalkech]

@WeiChens cannot find type AppHandle in this scope not found in this scope

[FabianLars]

Import it then, your code editor should hopefully do it for you.
If not, simply add use tauri::AppHandle;

[kamalkech]

@FabianLars thank u for response, i already fix this yesterday using Info.plist params without code rust