From 2c184edb05c1d1f567977730d680ab8249340031 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?St=C3=A9phane=20Graber?= <stgraber@ubuntu.com>
Date: Fri, 30 Mar 2018 11:13:18 -0400
Subject: lxc/main: Add version subcommand
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Closes #4381
Closes #4382

Signed-off-by: Stéphane Graber <stgraber@ubuntu.com>
---
 lxc/main.go    |  4 ++++
 lxc/version.go | 61 ++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 65 insertions(+)
 create mode 100644 lxc/version.go

diff --git a/lxc/main.go b/lxc/main.go
index fa76d276..70abc681 100644
--- a/lxc/main.go
+++ b/lxc/main.go
@@ -189,6 +189,10 @@ For help with any of those, simply call them with --help.`))
 	stopCmd := cmdStop{global: &globalCmd}
 	app.AddCommand(stopCmd.Command())
 
+	// version sub-command
+	versionCmd := cmdVersion{global: &globalCmd}
+	app.AddCommand(versionCmd.Command())
+
 	// Deal with --all flag
 	err := app.ParseFlags(os.Args[1:])
 	if err == nil {
diff --git a/lxc/version.go b/lxc/version.go
new file mode 100644
index 00000000..a4a01790
--- /dev/null
+++ b/lxc/version.go
@@ -0,0 +1,61 @@
+package main
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/spf13/cobra"
+
+	cli "github.com/lxc/lxd/shared/cmd"
+	"github.com/lxc/lxd/shared/i18n"
+	"github.com/lxc/lxd/shared/version"
+)
+
+type cmdVersion struct {
+	global *cmdGlobal
+}
+
+func (c *cmdVersion) Command() *cobra.Command {
+	cmd := &cobra.Command{}
+	cmd.Use = i18n.G("version [<remote>:]")
+	cmd.Short = i18n.G("Show local and remote versions")
+	cmd.Long = cli.FormatSection(i18n.G("Description"), i18n.G(
+		`Show local and remote versions`))
+
+	cmd.RunE = c.Run
+
+	return cmd
+}
+
+func (c *cmdVersion) Run(cmd *cobra.Command, args []string) error {
+	// Sanity checks
+	exit, err := c.global.CheckArgs(cmd, args, 0, 1)
+	if exit {
+		return err
+	}
+
+	fmt.Printf(i18n.G("Client version: %s\n"), version.Version)
+
+	// Remote version
+	remote := ""
+	if len(args) == 1 {
+		remote = args[0]
+		if !strings.HasSuffix(remote, ":") {
+			remote = remote + ":"
+		}
+	}
+
+	version := i18n.G("unreachable")
+	resources, err := c.global.ParseServers(remote)
+	if err == nil {
+		resource := resources[0]
+		info, _, err := resource.server.GetServer()
+		if err == nil {
+			version = info.Environment.ServerVersion
+		}
+	}
+
+	fmt.Printf(i18n.G("Server version: %s\n"), version)
+
+	return nil
+}