Implement macos support (hopefully)

main.go

@@ -6,6 +6,7 @@ import (
 	"errors"
 	"flag"
 	"fmt"
+	"log"
 	"os"
 	"os/exec"
 	"os/user"
@@ -46,13 +47,20 @@ var ErrAddUserFailExit = errors.New("useradd command returned no-zero exit code"
 var ErrAddGroupFailExit = errors.New("groupadd command returned no-zero exit code")
 
 func AddUser(username string, uid string) error {
-	cmd := exec.Command(
-		"useradd",
-		"--no-create-home",
+	commandArgs := []string{
 		"--uid", uid,
 		"--user-group",
 		username,
-	)
+	}
+
+	if os.Getenv("WORKSPACE_OS") == "darwin" {
+		log.Println(fmt.Sprintf("Note: Workspce OS is \"%s\"", os.Getenv("WORKSPACE_OS")))
+		commandArgs = append(commandArgs, "--create-home")
+	} else {
+		commandArgs = append(commandArgs, "--no-create-home")
+	}
+
+	cmd := exec.Command("useradd", commandArgs...)
 
 	output, err := cmd.CombinedOutput()
 	if err != nil {
@@ -161,57 +169,44 @@ func Run(detach bool, mounts []string, command []string) error {
 	}
 
 	home := os.Getenv("HOME")
-	dockerGroup, err := user.LookupGroup("docker")
-	if err != nil {
-		return err
-	}
+	hostOS := "darwin"
 
 	dockerCommand := []string{
 		"/bin/docker", "run", "--network=host",
 		"--workdir=" + workDir,
 		"--rm",
-		"-e", "DISPLAY=" + os.Getenv("DISPLAY"),
-		"-e", "WORKSPACE_USER=" + curUser.Uid,
-		"-e", "WORKSPACE_USERNAME=" + curUser.Username,
-		"-e", "WORKSPACE_DOCKER_GID=" + dockerGroup.Gid,
-		"-e", "HOME=" + home,
-		"-h", os.Getenv("HOSTNAME"),
-		"-v", "/var/run/docker.sock:/var/run/docker.sock",
-		"-v", "/etc/hosts:/etc/hosts:ro",
-		"-v", "/etc/resolv.conf:/etc/resolv.conf:ro",
-		"-v", home + ":" + home,
-		"-e", "SSH_AGENT_LAUNCHER=" + os.Getenv("SSH_AGENT_LAUNCHER"),
-		"-e", "SSH_AUTH_SOCK=" + os.Getenv("SSH_AUTH_SOCK"),
-		"-e", "PULSE_SERVER=unix:/run/user/" + curUser.Uid + "/pulse/native",
-		"-e", "DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/" + curUser.Uid + "/bus",
-		"-e", "TERM=" + os.Getenv("TERM"),
-		"-v", "/tmp/.X11-unix:/tmp/.X11-unix",
-		"-v", "/run/user/" + curUser.Uid + ":/run/user/" + curUser.Uid,
-		"-v", "/dev/snd",
+		"-e", "WORKSPACE_OS=" + hostOS,
 	}
 
-	if detach {
-		dockerCommand = append(dockerCommand, "--detach")
-	}
-
-	if fileInfo, _ := os.Stdout.Stat(); (fileInfo.Mode() & os.ModeCharDevice) != 0 {
-		dockerCommand = append(dockerCommand, "-ti")
-	}
-
-	for _, mount := range mounts {
-		dockerCommand = append(dockerCommand, "-v", mount+":"+mount)
-	}
+	if hostOS != "darwin" {
+		dockerGroup, err := user.LookupGroup("docker")
+		if err != nil {
+			return err
+		}
 
-	fileInfo, err := os.Lstat(home)
-	if err != nil {
-		return fmt.Errorf(
-			"Failed to determine whether home directory is a symbolic link: %w",
-			err,
+		dockerCommand = append(
+			dockerCommand,
+			"-e", "WORKSPACE_DOCKER_GID="+dockerGroup.Gid,
+			"-v", "/var/run/docker.sock:/var/run/docker.sock",
+			"-v", "/etc/hosts:/etc/hosts:ro",
+			"-v", "/etc/resolv.conf:/etc/resolv.conf:ro",
+			"-v", home+":"+home,
+			"-e", "SSH_AGENT_LAUNCHER="+os.Getenv("SSH_AGENT_LAUNCHER"),
+			"-e", "SSH_AUTH_SOCK="+os.Getenv("SSH_AUTH_SOCK"),
+			"-e", "PULSE_SERVER=unix:/run/user/"+curUser.Uid+"/pulse/native",
+			"-e", "DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/"+curUser.Uid+"/bus",
+			"-v", "/tmp/.X11-unix:/tmp/.X11-unix",
+			"-v", "/run/user/"+curUser.Uid+":/run/user/"+curUser.Uid,
+			"-v", "/dev/snd",
+			"-e", "DISPLAY="+os.Getenv("DISPLAY"),
+			"-e", "WORKSPACE_USER="+curUser.Uid,
+			"-e", "WORKSPACE_USERNAME="+curUser.Username,
+			"-e", "HOME="+home,
+			"-h", os.Getenv("HOSTNAME"),
+			"-e", "TERM="+os.Getenv("TERM"),
 		)
-	}
 
-	if fileInfo.Mode()&os.ModeSymlink == os.ModeSymlink {
-		destination, err := os.Readlink(home)
+		fileInfo, err := os.Lstat(home)
 		if err != nil {
 			return fmt.Errorf(
 				"Failed to determine whether home directory is a symbolic link: %w",
@@ -219,7 +214,38 @@ func Run(detach bool, mounts []string, command []string) error {
 			)
 		}
 
-		dockerCommand = append(dockerCommand, "-v", destination+":"+destination)
+		if fileInfo.Mode()&os.ModeSymlink == os.ModeSymlink {
+			destination, err := os.Readlink(home)
+			if err != nil {
+				return fmt.Errorf(
+					"Failed to determine whether home directory is a symbolic link: %w",
+					err,
+				)
+			}
+
+			dockerCommand = append(dockerCommand, "-v", destination+":"+destination)
+		}
+	} else {
+		dockerCommand = append(
+			dockerCommand,
+			"-e", "WORKSPACE_DOCKER_GID=1001",
+			"-v", workDir+":"+workDir,
+			"-e", "WORKSPACE_USER=1000",
+			"-e", "WORKSPACE_USERNAME="+curUser.Username+"-workspace",
+			"-e", "HOME=/home/"+curUser.Username+"-workspace",
+		)
+	}
+
+	if detach {
+		dockerCommand = append(dockerCommand, "--detach")
+	}
+
+	if fileInfo, _ := os.Stdout.Stat(); (fileInfo.Mode() & os.ModeCharDevice) != 0 {
+		dockerCommand = append(dockerCommand, "-ti")
+	}
+
+	for _, mount := range mounts {
+		dockerCommand = append(dockerCommand, "-v", mount+":"+mount)
 	}
 
 	dockerCommand = append(dockerCommand, "hugotty/workspace:latest")