Re: [Qemu-devel] [PULL v1 4/9] io: add QIOChannelSocket class

["Daniel P. Berrange" <berrange@redhat.com>]

On Tue, Dec 22, 2015 at 02:44:00PM +0000, Peter Maydell wrote:
> On 17 December 2015 at 13:45, Daniel P. Berrange <berrange@redhat.com> wrote:
> > Implement a QIOChannel subclass that supports sockets I/O.
> > The implementation is able to manage a single socket file
> > descriptor, whether a TCP/UNIX listener, TCP/UNIX connection,
> > or a UDP datagram. It provides APIs which can listen and
> > connect either asynchronously or synchronously. Since there
> > is no asynchronous DNS lookup API available, it uses the
> > QIOTask helper for spawning a background thread to ensure
> > non-blocking operation.
> 
> (There's GNU adns for async DNS lookups, but I guess we don't
> really want the extra dependency.)
> 
> > +static void test_io_channel_ipv4(bool async)
> > +{
> > +    SocketAddress *listen_addr = g_new0(SocketAddress, 1);
> > +    SocketAddress *connect_addr = g_new0(SocketAddress, 1);
> > +
> > +    listen_addr->type = SOCKET_ADDRESS_KIND_INET;
> > +    listen_addr->u.inet = g_new0(InetSocketAddress, 1);
> > +    listen_addr->u.inet->host = g_strdup("0.0.0.0");
> > +    listen_addr->u.inet->port = NULL; /* Auto-select */
> > +
> > +    connect_addr->type = SOCKET_ADDRESS_KIND_INET;
> > +    connect_addr->u.inet = g_new0(InetSocketAddress, 1);
> > +    connect_addr->u.inet->host = g_strdup("127.0.0.1");
> > +    connect_addr->u.inet->port = NULL; /* Filled in later */
> 
> Does this test program really need to create a listening
> socket on the host's external interface? Anybody could
> connect to it, which means half this test code is suddenly
> a security boundary...

Pretty sure we can switch that 0.0.0.0 to also be 127.0.0.1.
I'll double check and send a patch if it works.

Regards,
Daniel
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