xpra management package

xpra/client.go

@@ -0,0 +1,69 @@
+package xpra
+import (
+	"github.com/subgraph/oz"
+	"fmt"
+	"os"
+	"github.com/op/go-logging"
+	"os/exec"
+	"syscall"
+)
+
+var xpraClientDefaultArgs = []string{
+	"--title=@title@",
+	"--compress=0",
+	//"--delay-tray",
+	//"--border=auto",
+	"--no-keyboard-sync",
+}
+
+func NewClient(config *oz.XServerConf, display uint64, cred *syscall.Credential, workdir string, hostname string, log *logging.Logger) *Xpra {
+	x := new(Xpra)
+	x.Config = config
+	x.Display = display
+	x.WorkDir = workdir
+	x.xpraArgs = prepareClientArgs(config, display, workdir, log)
+	x.Process = exec.Command("/usr/bin/xpra", x.xpraArgs...)
+	x.Process.SysProcAttr = &syscall.SysProcAttr{
+		Credential: cred,
+	}
+	x.Process.Env = append(os.Environ(),
+		fmt.Sprintf("TMPDIR=%s", workdir),
+		fmt.Sprintf("XPRA_SOCKET_HOSTNAME=%s", hostname),
+	)
+	return x
+}
+
+func prepareClientArgs(config *oz.XServerConf, display uint64, workdir string, log *logging.Logger) []string {
+	args := getDefaultArgs(config)
+	args = append(args, xpraClientDefaultArgs...)
+	if !config.EnableTray {
+		args = append(args, "--no-tray")
+	}
+	if exists(config.TrayIcon, "Tray icon", log) {
+		args = append(args, fmt.Sprintf("--tray-icon=%s", config.TrayIcon))
+	}
+	if exists(config.WindowIcon, "Window icon", log) {
+		args = append(args, fmt.Sprintf("--window-icon=%s", config.WindowIcon))
+	}
+	args = append(args,
+		fmt.Sprint("--socket-dir=%s", workdir),
+		"attach",
+		fmt.Sprintf(":%d", display),
+	)
+	return args
+}
+
+func exists(path,label string, log *logging.Logger) bool {
+	if path == "" {
+		return false
+	}
+	if _,err := os.Stat(path); err != nil {
+		if !os.IsNotExist(err) {
+			log.Notice("%s file missing at %s, ignored.", label, path)
+		} else {
+			log.Warning("Error reading file info for %s: %v", path, err)
+		}
+		return false
+	}
+	return true
+}

xpra/server.go

@@ -0,0 +1,38 @@
+package xpra
+import (
+	"github.com/subgraph/oz"
+	"fmt"
+	"os"
+	"os/exec"
+)
+
+var xpraServerDefaultArgs = []string{
+	"--no-mdns",
+	//"--pulseaudio",
+	"--no-pulseaudio",
+	"--input-method=SCIM",
+}
+
+func NewServer(config *oz.XServerConf, display uint64, workdir string) *Xpra {
+	x := new(Xpra)
+	x.Config = config
+	x.Display = display
+	x.WorkDir = workdir
+	x.xpraArgs = prepareServerArgs(config, display, workdir)
+	x.Process = exec.Command("/usr/bin/xpra", x.xpraArgs...)
+	x.Process.Env = append(os.Environ(), "TMPDIR="+workdir)
+
+	return x
+}
+
+func prepareServerArgs(config *oz.XServerConf, display uint64, workdir string) []string {
+	args := getDefaultArgs(config)
+	args = append(args, xpraServerDefaultArgs...)
+	args = append(args,
+		fmt.Sprintf("--socket-dir=%s", workdir),
+		"start",
+		fmt.Sprintf(":%d", display),
+	)
+	return args
+}
+

xpra/xpra.go

@@ -0,0 +1,55 @@
+package xpra
+import (
+	"os/exec"
+	"github.com/subgraph/oz"
+)
+
+type Xpra struct {
+	// Server working directory where unix socket is created
+	WorkDir string
+
+	Config *oz.XServerConf
+
+	// Running xpra process
+	Process *exec.Cmd
+
+	// Display number
+	Display uint64
+
+	// Arguments passed to xpra command
+	xpraArgs []string
+
+}
+
+var xpraDefaultArgs = []string{
+	"--no-daemon",
+	"--mmap",
+	"--no-sharing",
+	"--bell",
+	"--system-tray",
+	"--xsettings",
+	//"--no-xsettings",
+	"--notifications",
+	"--cursors",
+	"--encoding=rgb",
+	"--no-pulseaudio",
+}
+
+func getDefaultArgs(config *oz.XServerConf) []string {
+	args := []string{}
+	args = append(args, xpraDefaultArgs...)
+	if config.DisableClipboard {
+		args = append(args, "--no-clipboard")
+	} else {
+		args = append(args, "--clipboard")
+	}
+
+	if config.DisableAudio {
+		args = append(args, "--no-microphone", "--no-speaker")
+	} else {
+		args = append(args, "--microphone", "--speaker")
+	}
+
+	return args
+}
+