Add an autologin that allows us to fix the stty

Signed-off-by: Sven Dowideit <SvenDowideit@home.org.au>

cmd/control/autologin.go

@@ -0,0 +1,72 @@
+package control
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"runtime"
+	"strings"
+
+	"github.com/codegangsta/cli"
+	"github.com/rancher/os/config"
+	"github.com/rancher/os/log"
+)
+
+func AutologinMain() {
+	log.InitLogger()
+	app := cli.NewApp()
+
+	app.Name = os.Args[0]
+	app.Usage = "autologin console"
+	app.Version = config.Version
+	app.Author = "Rancher Labs, Inc."
+	app.Email = "sven@rancher.com"
+	app.EnableBashCompletion = true
+	app.Action = autologinAction
+	app.HideHelp = true
+	app.Run(os.Args)
+}
+
+
+func autologinAction(c *cli.Context) error {
+	cmd := exec.Command("/bin/stty", "sane")
+	cmd.Stderr = os.Stderr
+	cmd.Stdout = os.Stdout
+	cmd.Stdin = os.Stdin
+	if err := cmd.Run(); err != nil {
+		log.Error(err)
+	}
+
+	usertty := ""
+	user := "root"
+	tty := ""
+	if c.NArg() > 0 {
+		usertty = c.Args().Get(0)
+		s := strings.SplitN(usertty, ":", 2)
+		user = s[0]
+		if len(s) > 1 {
+			tty = s[1]
+		}
+	}
+	cfg := config.LoadConfig()
+	// replace \n and \l
+	banner := config.Banner
+	banner = strings.Replace(banner, "\\v", config.Version, -1)
+	banner = strings.Replace(banner, "\\s", "RancherOS " + runtime.GOARCH, -1)
+	banner = strings.Replace(banner, "\\r", "4.9....", -1)
+	banner = strings.Replace(banner, "\\n", cfg.Hostname, -1)
+	banner = strings.Replace(banner, "\\l", tty, -1)
+	banner = strings.Replace(banner, "\\\\", "\\", -1)
+	banner = banner + "\n"
+	fmt.Printf(banner)
+
+	cmd = exec.Command("/usr/bin/login", "-f", user)
+	cmd.Stderr = os.Stderr
+	cmd.Stdout = os.Stdout
+	cmd.Stdin = os.Stdin
+	if err := cmd.Run(); err != nil {
+		log.Error(err)
+	}
+	return nil
+}
+

cmd/control/console_init.go

@@ -109,17 +109,7 @@ func consoleInitFunc() error {
 	}
 
 	// font backslashes need to be escaped for when issue is output! (but not the others..)
-	if err := ioutil.WriteFile("/etc/issue", []byte(`
-               ,        , ______                 _                 _____ _____TM
-  ,------------|'------'| | ___ \\               | |               /  _  /  ___|
- / .           '-'    |-  | |_/ /__ _ _ __   ___| |__   ___ _ __  | | | \\ '--.
- \\/|             |    |   |    // _' | '_ \\ / __| '_ \\ / _ \\ '__' | | | |'--. \\
-   |   .________.'----'   | |\\ \\ (_| | | | | (__| | | |  __/ |    | \\_/ /\\__/ /
-   |   |        |   |     \\_| \\_\\__,_|_| |_|\\___|_| |_|\\___|_|     \\___/\\____/
-   \\___/        \\___/     \s \r
-
-         RancherOS `+config.Version+` \n \l `+cpuid.CPU.HypervisorName+`
-         `), 0644); err != nil {
+	if err := ioutil.WriteFile("/etc/issue", []byte(config.Banner), 0644); err != nil {
 		log.Error(err)
 	}
 
@@ -163,7 +153,8 @@ func generateRespawnConf(cmdline, user string, sshd bool) string {
 
 		respawnConf.WriteString(gettyCmd)
 		if strings.Contains(cmdline, fmt.Sprintf("rancher.autologin=%s", tty)) {
-			respawnConf.WriteString(fmt.Sprintf(" --autologin %s", user))
+			respawnConf.WriteString(fmt.Sprintf(" -n -l /usr/bin/autologin -o %s:tty%d", user, i))
+			//respawnConf.WriteString(fmt.Sprintf(" --autologin %s", user))
 		}
 		respawnConf.WriteString(fmt.Sprintf(" --noclear %s linux\n", tty))
 	}
@@ -175,7 +166,9 @@ func generateRespawnConf(cmdline, user string, sshd bool) string {
 
 		respawnConf.WriteString(gettyCmd)
 		if strings.Contains(cmdline, fmt.Sprintf("rancher.autologin=%s", tty)) {
-			respawnConf.WriteString(fmt.Sprintf(" --autologin %s", user))
+			//respawnConf.WriteString(fmt.Sprintf(" -n -l /usr/bin/autologin -o rancher"))
+			respawnConf.WriteString(fmt.Sprintf(" -n -l /usr/bin/autologin -o %s:%s", user, tty))
+			//respawnConf.WriteString(fmt.Sprintf(" --autologin %s", user))
 		}
 		respawnConf.WriteString(fmt.Sprintf(" %s\n", tty))
 	}

cmd/control/entrypoint.go

@@ -79,6 +79,7 @@ func writeFiles(cfg *config.CloudConfig) error {
 
 func setupCommandSymlinks() {
 	for _, link := range []symlink{
+		{config.RosBin, "/usr/bin/autologin"},
 		{config.RosBin, "/usr/bin/cloud-init-execute"},
 		{config.RosBin, "/usr/bin/cloud-init-save"},
 		{config.RosBin, "/usr/bin/dockerlaunch"},