From eb09a54c9ad89483afed1146c592adfe26f85ed9 Mon Sep 17 00:00:00 2001
From: xSmurf <xsmurf+github@smurfturf.net>
Date: Mon, 15 Jun 2015 22:07:19 +0000
Subject: [PATCH] Added "config show" to oz-setup

---
 cmd/oz-setup/main.go | 61 ++++++++++++++++++++++++++++++++++++++++++--
 config.go            | 24 ++++++++---------
 oz/main.go           |  1 -
 profile.go           |  4 +--
 4 files changed, 73 insertions(+), 17 deletions(-)

diff --git a/cmd/oz-setup/main.go b/cmd/oz-setup/main.go
index 53b28f8..46df88e 100644
--- a/cmd/oz-setup/main.go
+++ b/cmd/oz-setup/main.go
@@ -4,6 +4,8 @@ import (
 	"fmt"
 	"os"
 	"os/exec"
+	"reflect"
+	"strconv"
 	"strings"
 	"syscall"
 
@@ -31,7 +33,7 @@ func main() {
 	app.Usage = "command line interface to install, remove, and create Oz sandboxes\nYou can specify a package name, a binary path, or a Oz profile file "
 	app.Author = "Subgraph"
 	app.Email = "info@subgraph.com"
-	app.Version = "0.0.1"
+	app.Version = oz.OzVersion
 	app.EnableBashCompletion = true
 
 	flagsHookMode := []cli.Flag{
@@ -91,7 +93,62 @@ func handleConfigcheck(c *cli.Context) {
 }
 
 func handleConfigshow(c *cli.Context) {
-	handleConfigcheck(c)
+	config, err := oz.LoadConfig(oz.DefaultConfigPath)
+	useDefaults := false
+	if err != nil {
+		if os.IsNotExist(err) {
+			config = oz.NewDefaultConfig()
+			useDefaults = true
+		} else {
+			fmt.Fprintf(os.Stderr, "Could not load configuration: %s", oz.DefaultConfigPath, err)
+			os.Exit(1)
+		}
+	}
+
+	v := reflect.ValueOf(*config)
+	vt := reflect.TypeOf(*config)
+	maxFieldLength := 0
+	for i := 0; i < v.NumField(); i++ {
+		flen := len(vt.Field(i).Tag.Get("json"))
+		if flen > maxFieldLength {
+			maxFieldLength = flen
+		}
+	}
+	maxValueLength := 0
+	for i := 0; i < v.NumField(); i++ {
+		sval := fmt.Sprintf("%v", v.Field(i).Interface())
+		flen := len(sval)
+		if flen > maxValueLength {
+			maxValueLength = flen
+		}
+	}
+
+	sfmt := "%-" + strconv.Itoa(maxFieldLength) + "s: %-" + strconv.Itoa(maxValueLength) + "v"
+	hfmt := "%-" + strconv.Itoa(maxFieldLength) + "s: %s\n"
+
+	if !useDefaults {
+		fmt.Printf(hfmt, "Config file", oz.DefaultConfigPath)
+	} else {
+		fmt.Printf(hfmt, "Config file", "Not found - using defaults")
+	}
+
+	for i := 0; i < len(fmt.Sprintf(sfmt, "", "")); i++ {
+		fmt.Print("=")
+	}
+	fmt.Println("")
+
+	for i := 0; i < v.NumField(); i++ {
+		fval := fmt.Sprintf("%v", v.Field(i).Interface())
+		fmt.Printf(sfmt, vt.Field(i).Tag.Get("json"), fval)
+		desc := vt.Field(i).Tag.Get("desc")
+		if desc != "" {
+			fmt.Printf(" # %s", desc)
+		}
+
+		fmt.Println("")
+	}
+
+	os.Exit(0)
 }
 
 func handleInstall(c *cli.Context) {
diff --git a/config.go b/config.go
index 5505658..0c3ec88 100644
--- a/config.go
+++ b/config.go
@@ -10,18 +10,18 @@ import (
 )
 
 type Config struct {
-	ProfileDir      string   `json:"profile_dir"`
-	ShellPath       string   `json:"shell_path"`
-	InitPath        string   `json:"init_path"`
-	ClientPath      string   `json:"client_path"`
-	SandboxPath     string   `json:"sandbox_path"`
-	BridgeMACAddr   string   `json:"bridge_mac"`
-	DivertSuffix    string   `json:"divert_suffix"`
-	NMIgnoreFile    string   `json:"nm_ignore_file"`
-	UseFullDev      bool     `json:"use_full_dev"`
-	AllowRootShell  bool     `json:"allow_root_shell"`
-	LogXpra         bool     `json:"log_xpra"`
-	EnvironmentVars []string `json:"environment_vars"`
+	ProfileDir      string   `json:"profile_dir" desc:"Directory containing the sandbox profiles"`
+	ShellPath       string   `json:"shell_path" desc:"Path of the shell using when entering a sandbox"`
+	InitPath        string   `json:"init_path" desc:"Path to the 'oz-init' binary"`
+	ClientPath      string   `json:"client_path" desc:"Path to the 'oz' client binary "`
+	SandboxPath     string   `json:"sandbox_path" desc:"Path of the sandboxes base"`
+	BridgeMACAddr   string   `json:"bridge_mac" desc:"MAC Address of the bridge interface"`
+	DivertSuffix    string   `json:"divert_suffix" desc:"Suffix using for dpkg-divert of application executables"`
+	NMIgnoreFile    string   `json:"nm_ignore_file" desc:"Path to the NetworkManager ignore config file"`
+	UseFullDev      bool     `json:"use_full_dev" desc:"Give sandboxes full access to devices instead of a restricted set"`
+	AllowRootShell  bool     `json:"allow_root_shell" desc:"Allow entering a sandbox shell as root"`
+	LogXpra         bool     `json:"log_xpra" desc:"Log output of Xpra"`
+	EnvironmentVars []string `json:"environment_vars" desc:"Default environment variables passed to sandboxes"`
 }
 
 const OzVersion         = "0.0.1"
diff --git a/oz/main.go b/oz/main.go
index 7d33058..913b14b 100644
--- a/oz/main.go
+++ b/oz/main.go
@@ -26,7 +26,6 @@ func init() {
 	case "oz":
 		runFunc = runApplication
 	default:
-		// TODO: Exit if already inside sandbox should only happen
 		runFunc = runSandbox
 	}
 }
diff --git a/profile.go b/profile.go
index 9972d03..738cb19 100644
--- a/profile.go
+++ b/profile.go
@@ -15,7 +15,7 @@ type Profile struct {
 	// Path to binary to launch
 	Path string
 	// Path of the config file
-	ConfigPath string `json:"-"`
+	ProfilePath string `json:"-"`
 	// Optional path of binary to watch for watchdog purposes if different than Path
 	Watchdog string
 	// Optional wrapper binary to use when launching command (ex: tsocks)
@@ -153,6 +153,6 @@ func loadProfileFile(file string) (*Profile, error) {
 	if p.Name == "" {
 		p.Name = path.Base(p.Path)
 	}
-	p.ConfigPath = file
+	p.ProfilePath = file
 	return p, nil
 }