[pve-devel] [PATCH qemu-server v8 1/5] enable clipboard parameter in vga_fmt

[Markus Frank <m.frank@proxmox.com>]

added option to use the qemu vdagent implementation to enable the noVNC
clipboard. When enabled with SPICE the spice-vdagent gets replaced with the qemu
implementation.

This patch does not solve #1406, but does allow copy and paste with
a running X-session, when spice-vdagent is installed on the guest.

added clipboard variable to return at status/current

By that noVNC is able to check if clipboard is active.

Signed-off-by: Markus Frank <m.frank@proxmox.com>
---
 PVE/API2/Qemu.pm  | 13 ++++++++++
 PVE/QemuServer.pm | 61 ++++++++++++++++++++++++++++++++---------------
 2 files changed, 55 insertions(+), 19 deletions(-)

diff --git a/PVE/API2/Qemu.pm b/PVE/API2/Qemu.pm
index 587bb22..267527a 100644
--- a/PVE/API2/Qemu.pm
+++ b/PVE/API2/Qemu.pm
@@ -970,6 +970,9 @@ __PACKAGE__->register_method({
 			$conf->{boot} = PVE::QemuServer::print_bootorder($devs);
 		    }
 
+		    my $vga = PVE::QemuServer::parse_vga($conf->{vga});
+		    PVE::QemuServer::assert_vnc_clipboard_config($vga);
+
 		    # auto generate uuid if user did not specify smbios1 option
 		    if (!$conf->{smbios1}) {
 			$conf->{smbios1} = PVE::QemuServer::generate_smbios1_uuid();
@@ -1760,6 +1763,10 @@ my $update_vm_api  = sub {
 			die "only root can modify '$opt' config for real devices\n";
 		    }
 		    $conf->{pending}->{$opt} = $param->{$opt};
+		} elsif ($opt eq 'vga') {
+		    my $vga = PVE::QemuServer::parse_vga($param->{$opt});
+		    PVE::QemuServer::assert_vnc_clipboard_config($vga);
+		    $conf->{pending}->{$opt} = $param->{$opt};
 		} elsif ($opt =~ m/^usb\d+/) {
 		    if ((!defined($conf->{$opt}) || $conf->{$opt} =~ m/spice/) && $param->{$opt} =~ m/spice/) {
 			$rpcenv->check_vm_perm($authuser, $vmid, undef, ['VM.Config.HWType']);
@@ -2580,6 +2587,11 @@ __PACKAGE__->register_method({
 		type => 'boolean',
 		optional => 1,
 	    },
+	    vnc_clipboard => {
+		description => "QEMU clipboard for noVNC is enabled in config.",
+		type => 'boolean',
+		optional => 1,
+	    },
 	},
     },
     code => sub {
@@ -2598,6 +2610,7 @@ __PACKAGE__->register_method({
 	    my $spice = defined($vga->{type}) && $vga->{type} =~ /^virtio/;
 	    $spice ||= PVE::QemuServer::vga_conf_has_spice($conf->{vga});
 	    $status->{spice} = 1 if $spice;
+	    $status->{vnc_clipboard} = $vga->{vnc_clipboard};
 	}
 	$status->{agent} = 1 if PVE::QemuServer::get_qga_key($conf, 'enabled');
 
diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
index 40be44d..facc87c 100644
--- a/PVE/QemuServer.pm
+++ b/PVE/QemuServer.pm
@@ -193,8 +193,16 @@ my $vga_fmt = {
 	minimum => 4,
 	maximum => 512,
     },
+    vnc_clipboard => {
+	description => "enable VNC clipboard (requires spice tools in the guest)",
+	type => 'boolean',
+	optional => 1,
+	default => 0
+    }
 };
 
+my $vnc_clipboard_regex = qr/^(std|cirrus|vmware|virtio|qxl)/;
+
 my $ivshmem_fmt = {
     size => {
 	type => 'integer',
@@ -1405,6 +1413,14 @@ sub pve_verify_hotplug_features {
     die "unable to parse hotplug option\n";
 }
 
+sub assert_vnc_clipboard_config {
+    my ($vga) = @_;
+
+    if ($vga->{vnc_clipboard} && $vga->{type} && $vga->{type} !~ $vnc_clipboard_regex) {
+	die "vga type $vga->{type} is not compatible with VNC clipboard\n";
+    }
+}
+
 sub scsi_inquiry {
     my($fh, $noerr) = @_;
 
@@ -3935,7 +3951,10 @@ sub config_to_command {
 
     my $spice_port;
 
-    if ($qxlnum || $vga->{type} =~ /^virtio/) {
+    assert_vnc_clipboard_config($vga);
+    my $is_spice = $qxlnum || $vga->{type} =~ /^virtio/;
+
+    if ($is_spice || $vga->{vnc_clipboard}) {
 	if ($qxlnum > 1) {
 	    if ($winversion){
 		for (my $i = 1; $i < $qxlnum; $i++){
@@ -3953,32 +3972,36 @@ sub config_to_command {
 		push @$cmd, '-global', "qxl-vga.vram_size=$vram";
 	    }
 	}
-
 	my $pciaddr = print_pci_addr("spice", $bridges, $arch, $machine_type);
 
-	my $pfamily = PVE::Tools::get_host_address_family($nodename);
-	my @nodeaddrs = PVE::Tools::getaddrinfo_all('localhost', family => $pfamily);
-	die "failed to get an ip address of type $pfamily for 'localhost'\n" if !@nodeaddrs;
-
 	push @$devices, '-device', "virtio-serial,id=spice$pciaddr";
-	push @$devices, '-chardev', "spicevmc,id=vdagent,name=vdagent";
+	if ($vga->{vnc_clipboard}) {
+	    push @$devices, '-chardev', 'qemu-vdagent,id=vdagent,name=vdagent,clipboard=on';
+	} else {
+	    push @$devices, '-chardev', 'spicevmc,id=vdagent,name=vdagent';
+	}
 	push @$devices, '-device', "virtserialport,chardev=vdagent,name=com.redhat.spice.0";
 
-	my $localhost = PVE::Network::addr_to_ip($nodeaddrs[0]->{addr});
-	$spice_port = PVE::Tools::next_spice_port($pfamily, $localhost);
+	if ($is_spice) {
+	    my $pfamily = PVE::Tools::get_host_address_family($nodename);
+	    my @nodeaddrs = PVE::Tools::getaddrinfo_all('localhost', family => $pfamily);
+	    die "failed to get an ip address of type $pfamily for 'localhost'\n" if !@nodeaddrs;
 
-	my $spice_enhancement_str = $conf->{spice_enhancements} // '';
-	my $spice_enhancement = parse_property_string($spice_enhancements_fmt, $spice_enhancement_str);
-	if ($spice_enhancement->{foldersharing}) {
-	    push @$devices, '-chardev', "spiceport,id=foldershare,name=org.spice-space.webdav.0";
-	    push @$devices, '-device', "virtserialport,chardev=foldershare,name=org.spice-space.webdav.0";
-	}
+	    my $localhost = PVE::Network::addr_to_ip($nodeaddrs[0]->{addr});
+	    $spice_port = PVE::Tools::next_spice_port($pfamily, $localhost);
 
-	my $spice_opts = "tls-port=${spice_port},addr=$localhost,tls-ciphers=HIGH,seamless-migration=on";
-	$spice_opts .= ",streaming-video=$spice_enhancement->{videostreaming}"
-	    if $spice_enhancement->{videostreaming};
+	    my $spice_enhancement_str = $conf->{spice_enhancements} // '';
+	    my $spice_enhancement = parse_property_string($spice_enhancements_fmt, $spice_enhancement_str);
+	    if ($spice_enhancement->{foldersharing}) {
+		push @$devices, '-chardev', "spiceport,id=foldershare,name=org.spice-space.webdav.0";
+		push @$devices, '-device', "virtserialport,chardev=foldershare,name=org.spice-space.webdav.0";
+	    }
 
-	push @$devices, '-spice', "$spice_opts";
+	    my $spice_opts = "tls-port=${spice_port},addr=$localhost,tls-ciphers=HIGH,seamless-migration=on";
+	    $spice_opts .= ",streaming-video=$spice_enhancement->{videostreaming}"
+		if $spice_enhancement->{videostreaming};
+	    push @$devices, '-spice', "$spice_opts";
+	}
     }
 
     # enable balloon by default, unless explicitly disabled
-- 
2.30.2