-
Notifications
You must be signed in to change notification settings - Fork 19
/
main.go
82 lines (70 loc) · 1.87 KB
/
main.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
package main
import (
"fmt"
"log"
"os"
"path/filepath"
"runtime"
"github.com/aws/ec2-macos-init/internal/paths"
"github.com/aws/ec2-macos-init/lib/ec2macosinit"
)
const (
loggingTag = "ec2-macOS-init"
)
func main() {
const baseDir = paths.DefaultBaseDirectory
// Set up logging
logger, err := ec2macosinit.NewLogger(loggingTag, true, true)
if err != nil {
log.Fatalf("Unable to start logging: %s", err)
}
// Check runtime OS
if !(runtime.GOOS == "darwin") {
logger.Fatal(1, "Can only be run from macOS!")
}
// Check that this is being run by a user with root permissions
if !runningAsRoot() {
logger.Fatal(64, "Must be run with root permissions!")
}
// Check for no command
if len(os.Args) < 2 {
logger.Info("Must provide a command!")
printUsage(baseDir)
os.Exit(2)
}
// Setup InitConfig
config := &ec2macosinit.InitConfig{
HistoryPath: paths.AllInstancesHistory(baseDir),
HistoryFilename: paths.HistoryJSON,
Log: logger,
}
// Command switch
switch command := os.Args[1]; command {
case "run":
run(baseDir, config)
case "clean":
clean(baseDir, config)
case "version":
printVersion()
os.Exit(0)
default:
logger.Errorf("%s is not a valid command", command)
printUsage(baseDir)
os.Exit(2)
}
}
// printUsage prints the help text for this program.
func printUsage(baseDir string) {
fmt.Println("Usage: ec2-macos-init <command> <arguments>")
fmt.Println("Commands are:")
fmt.Println(" run - Run init using configuration located in " + filepath.Join(baseDir, paths.InitTOML))
fmt.Println(" clean - Remove instance history from disk")
fmt.Println(" version - Print version information")
fmt.Println("For more help: ec2-macos-init <command> -h")
}
// runningAsRoot checks to see if the init application is being run as
// root.
func runningAsRoot() bool {
// must effectively be root
return os.Geteuid() == 0
}