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Re: [virt-tools-list] [virt-viewer] virt-viewer: Allow TLS-only SPICE connections



On Wed, Jul 10, 2013 at 06:25:34PM +0200, Christophe Fergeau wrote:
> When trying to connect to a VM which uses SPICE with only a tls port
> set:
> <graphics type='spice' tlsPort='-1' autoport='no' listen='0' keymap='en-us'>
>     <listen type='address' address='0'/>
> </graphics>
> the connection will fail with
> "Cannot determine the graphic address for the guest spice"
> 
> virt_viewer_extract_connect_info() indeed assumes that if no
> non-TLS port is set, then this means we are trying to connect through
> an already open socket, and otherwise the connection fails.
> The presence of a TLS port is only checked when a non-TLS port is set.
> 
> This commit reworks that logic to start by extracting both the non-TLS
> and TLS ports (only when using SPICE for the latter), and by only trying
> to parse the socket to use if none of these 2 ports is set
> 
> This fixes rhbz#982840
> ---
>  src/virt-viewer.c | 24 ++++++++++++------------
>  1 file changed, 12 insertions(+), 12 deletions(-)
> 
> diff --git a/src/virt-viewer.c b/src/virt-viewer.c
> index 951a42b..207c9ca 100644
> --- a/src/virt-viewer.c
> +++ b/src/virt-viewer.c
> @@ -335,24 +335,24 @@ virt_viewer_extract_connect_info(VirtViewer *self,
>          goto cleanup;
>  
>      xpath = g_strdup_printf("string(/domain/devices/graphics[ type='%s']/@port)", type);
> -    if ((gport = virt_viewer_extract_xpath_string(xmldesc, xpath)) == NULL) {
> -        free(xpath);
> +    gport = virt_viewer_extract_xpath_string(xmldesc, xpath);
> +    g_free(xpath);
> +    if (g_str_equal(type, "spice")) {
> +        xpath = g_strdup_printf("string(/domain/devices/graphics[ type='%s']/@tlsPort)", type);
> +        gtlsport = virt_viewer_extract_xpath_string(xmldesc, xpath);
> +        g_free(xpath);
> +    }
> +
> +    if (gport || gtlsport) {
> +        xpath = g_strdup_printf("string(/domain/devices/graphics[ type='%s']/@listen)", type);
> +        ghost = virt_viewer_extract_xpath_string(xmldesc, xpath);
> +    } else {
>          xpath = g_strdup_printf("string(/domain/devices/graphics[ type='%s']/@socket)", type);
>          if ((unixsock = virt_viewer_extract_xpath_string(xmldesc, xpath)) == NULL) {
>              virt_viewer_app_simple_message_dialog(app, _("Cannot determine the graphic address for the guest %s"),
>                                                    priv->domkey);
>              goto cleanup;
>          }
> -    } else {
> -        if (g_str_equal(type, "spice")) {
> -            free(xpath);
> -            xpath = g_strdup_printf("string(/domain/devices/graphics[ type='%s']/@tlsPort)", type);
> -            gtlsport = virt_viewer_extract_xpath_string(xmldesc, xpath);
> -        }
> -
> -        free(xpath);
> -        xpath = g_strdup_printf("string(/domain/devices/graphics[ type='%s']/@listen)", type);
> -        ghost = virt_viewer_extract_xpath_string(xmldesc, xpath);
>      }
>  
>      if (ghost && gport)

ACK

Daniel
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