Bug 228636 – softlink nw_parameters_allow_sharing_port_with_listener

• Component: WebRTC
• Status: RESOLVED FIXED

[youenn fablet]

softlink nw_parameters_allow_sharing_port_with_listener

[youenn fablet]

Created attachment 434619 [details]
Patch

[Darin Adler]

Comment on attachment 434619 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=434619&action=review

> Source/WebKit/NetworkProcess/webrtc/NetworkRTCUDPSocketCocoa.mm:292
> +        String portString;
> +        const char* portValue;
> +#if HAVE(NWPARAMETERS_TRACKER_API)
> +        if (nw_parameters_allow_sharing_port_with_listenerPtr()) {
> +            nw_parameters_allow_sharing_port_with_listenerPtr()(parameters.get(), m_nwListener.get());
> +            portString = String::number(m_address.port());
> +            portValue = portString.utf8().data();

This code is wrong, and already was, and I am surprised it works.

To keep around a pointer to the UTF-8 data we need a CString for the local variable, not a String.

    portString = String::number(m_address.port()).utf8();
    portValue = portString.data();

There are also ways to write this that don’t allocate memory on the heap, using writeIntegerToBuffer, but the above should at least fix the dangerous lifetime bug.

[youenn fablet]

Right, I'll fix this or move to nw_endpoint_create_host_with_numeric_port if possible

[youenn fablet]

Created attachment 434636 [details]
Patch for landing

[youenn fablet]

Created attachment 434637 [details]
Patch for landing

[youenn fablet]

Created attachment 434646 [details]
Rebasing

[EWS]

Committed r280484 (240119@main): <https://commits.webkit.org/240119@main>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 434646 [details].

[Radar WebKit Bug Importer]

<rdar://problem/81334175>