unix global installer

src/globals/globals.go

@@ -0,0 +1,3 @@
+package globals
+
+var Version = "1.0.2"

src/grif.go

@@ -7,6 +7,7 @@ import (
 	"github.com/fatih/color"
 	"github.com/grifpkg/cli/client"
 	"github.com/grifpkg/cli/config"
+	"github.com/grifpkg/cli/globals"
 	"github.com/grifpkg/cli/installer"
 	"github.com/spf13/cobra"
 	"os"
@@ -18,7 +19,7 @@ var rootCMD = &cobra.Command{
 	Short: "grif is a plugin management system for bukkit-based projects",
 	Long: "grif is a plugin management system for bukkit-based projects that allows you to install, remove and update packages existing on spigotmc, the grif library, and various other configurable sources",
 	Run: func(cmd *cobra.Command, args []string) {
-		fmt.Fprintf(color.Output, "%s grif-cli version %s\n", color.HiGreenString("i"), color.CyanString("1.0.2"))
+		fmt.Fprintf(color.Output, "%s grif-cli version %s\n", color.HiGreenString("i"), color.CyanString(globals.Version))
 	},
 }
 

src/installer/installer.go

@@ -1 +1,33 @@
 package installer
+
+import (
+	"io"
+	"os"
+	"runtime"
+)
+
+func copyBinary(src string, dst string) error{
+	err := os.MkdirAll(dst, 0777)
+	if err!= nil && err != os.ErrExist {
+		return err
+	}
+	in, err := os.Open(src)
+	if err != nil {
+		return err
+	}
+	defer in.Close()
+	var added = ""
+	if runtime.GOOS == "windows" {
+		added+=".exe"
+	}
+	out, err := os.Create(dst+"grif"+added)
+	if err != nil {
+		return err
+	}
+	defer out.Close()
+	_, err = io.Copy(out, in)
+	if err != nil {
+		return err
+	}
+	return err
+}

src/installer/unixInstaller.go

@@ -1,24 +1,54 @@
-//+build linux
-//+build freebsd
-//+build darwin
-
 package installer
 
 import (
 	"fmt"
+	"github.com/fatih/color"
+	"github.com/grifpkg/cli/globals"
 	"github.com/kardianos/osext"
+	"github.com/segmentio/ksuid"
+	"io/ioutil"
+	"log"
 	"os"
 	"os/exec"
-	"strings"
+	"os/user"
+	"path"
 )
 
+func isRoot() (bool, error) {
+	currentUser, err := user.Current()
+	if err != nil {
+		return false, err
+	}
+	return currentUser.Username == "root", nil
+}
+
 func Install(){
-	path, _ := osext.ExecutableFolder()
+	root, _:= isRoot()
+	if !root {
+		fmt.Fprintf(color.Output, "%s %s\n", color.HiYellowString("!"), color.RedString("You must execute this command as root in order to be able to copy the binary to /usr/local/grifpkg/bin"))
+		return
+	}
 	file, _ := osext.Executable()
-	fmt.Println(path+file)
-	if(!strings.HasPrefix(file, "/usr/local/grifpkg/bin/")){
-		_ := os.MkdirAll("/usr/local/grifpkg/bin/", 0700)
-		_ := os.Rename(path+file,"/usr/local/grifpkg/bin/grif")
+	randomId := ksuid.New().String()
+	installPath := "/usr/local/etc/grifpkg/bin/"
+	_ = copyBinary(file, installPath+randomId+"/")
+
+	// remove all folders except new installation and current installation
+	files, err := ioutil.ReadDir(installPath)
+	if err != nil {
+		log.Fatal(err)
+	}
+	for _, f := range files {
+		if f.Name()!="." && path.Base(f.Name()) != path.Base(file) && path.Base(f.Name()) != randomId {
+			_ = os.RemoveAll(installPath+f.Name())
+		}
 	}
-	exec.Command("export","PATH=/usr/local/grifpkg/bin/:$PATH")
+
+	// symlink
+	_ = os.Remove("/usr/local/bin/grif")
+	exec.Command("ln", "-s", installPath+randomId+"/grif", "/usr/local/bin/grif").Run()
+	exec.Command("chmod", "+x", "/usr/local/bin/grif").Run()
+
+	//
+	fmt.Fprintf(color.Output, "%s grif %s has been installed\n", color.HiGreenString("i"), color.CyanString(globals.Version))
 }

src/installer/windowsInstaller.go

@@ -6,7 +6,6 @@ import (
 	"fmt"
 	"github.com/kardianos/osext"
 	"github.com/segmentio/ksuid"
-	"io"
 	"io/ioutil"
 	"log"
 	"os"
@@ -26,7 +25,6 @@ func Install(){
 		fmt.Println(copyerr.Error())
 	}
 	// remove all folders except new installation and current installation
-
 	files, err := ioutil.ReadDir(installPath)
 	if err != nil {
 		log.Fatal(err)
@@ -40,28 +38,7 @@ func Install(){
 	createInstallScript(installPath, randomId)
 
 	exec.Command(installPath+"install.bat").Run()
-}
-
-func copyBinary(src string, dst string) error{
-	err := os.MkdirAll(dst, 0777)
-	if err!= nil && err != os.ErrExist {
-		return err
-	}
-	in, err := os.Open(src)
-	if err != nil {
-		return err
-	}
-	defer in.Close()
-	out, err := os.Create(dst+"grif.exe")
-	if err != nil {
-		return err
-	}
-	defer out.Close()
-	_, err = io.Copy(out, in)
-	if err != nil {
-		return err
-	}
-	return err
+	fmt.Fprintf(color.Output, "%s grif %s has been installed\n", color.HiGreenString("i"), color.CyanString(globals.Version))
 }
 
 func createInstallScript(installPath string, id string){