gosh/main.go

138 lines
3 KiB
Go

package main
import (
"flag"
"fmt"
"os"
"strconv"
"strings"
"text/tabwriter"
)
func main() {
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "Usage: %s [gosh-flags] [user@host] [ssh-flags]\n", os.Args[0])
fmt.Fprintf(os.Stderr, "\nManagement Commands:\n")
fmt.Fprintf(os.Stderr, " %s [flags] list-keys\n", os.Args[0])
fmt.Fprintf(os.Stderr, " %s [flags] add-key <user_pattern> <host_pattern> <path_to_key>\n", os.Args[0])
fmt.Fprintf(os.Stderr, " %s [flags] update-key <id> <user_pattern> <host_pattern> <path_to_key>\n", os.Args[0])
fmt.Fprintf(os.Stderr, " %s [flags] delete-key <id>\n", os.Args[0])
fmt.Fprintf(os.Stderr, "\nFlags:\n")
flag.PrintDefaults()
}
storePath := flag.String("gosh-store", "", "Path to the keys store (optional)")
var args []string
for i := 1; i < len(os.Args); i++ {
arg := os.Args[i]
if arg == "-h" || arg == "--help" || arg == "-help" {
flag.Usage()
os.Exit(0)
} else if arg == "-gosh-store" {
if i+1 < len(os.Args) {
*storePath = os.Args[i+1]
i++
} else {
fmt.Fprintln(os.Stderr, "flag needs an argument: -gosh-store")
flag.Usage()
os.Exit(2)
}
} else if strings.HasPrefix(arg, "-gosh-store=") {
*storePath = strings.TrimPrefix(arg, "-gosh-store=")
} else {
args = append(args, arg)
}
}
argc := len(args)
if argc == 0 {
flag.Usage()
os.Exit(1)
}
cmd := args[0]
switch cmd {
case "add-key":
if argc != 4 {
fmt.Println("Error: Incorrect arguments for add-key.")
fmt.Println("Try: gosh [-gosh-store path] add-key <user_pattern> <host_pattern> <path_to_key>")
os.Exit(1)
}
user := args[1]
host := args[2]
keyPath := args[3]
err := addKey(*storePath, user, host, keyPath)
if err != nil {
fmt.Println("Error:", err)
os.Exit(1)
}
os.Exit(0)
case "list-keys":
keys, err := listkeys(*storePath)
if err != nil {
fmt.Println("Error:", err)
os.Exit(1)
}
w := tabwriter.NewWriter(os.Stdout, 0, 0, 3, ' ', 0)
fmt.Fprintln(w, "UD\tUser Pattern\tHost Pattern\tComment")
fmt.Fprintln(w, "--\t------------\t------------\t-------")
for _, k := range keys {
fmt.Fprintf(w, "%d\t%s\t%s\t%s\n", k.ID, k.UserPattern, k.HostPattern, k.Comment)
}
w.Flush()
os.Exit(0)
case "update-key":
if argc != 5 {
fmt.Println("Usage: gosh update-key <id> <user_pattern> <host_pattern> <path_to_key>")
os.Exit(1)
}
idStr := args[1]
user := args[2]
host := args[3]
keyPath := args[4]
id, err := strconv.ParseInt(idStr, 10, 32)
if err != nil {
fmt.Println("Error:", err)
os.Exit(1)
}
err = updateKey(*storePath, int(id), user, host, keyPath)
if err != nil {
fmt.Println("Error:", err)
os.Exit(1)
}
os.Exit(0)
case "delete-key":
if argc != 2 {
fmt.Println("Usage: gosh delete-key <id>")
os.Exit(1)
}
id, err := strconv.ParseInt(args[1], 10, 32)
if err != nil {
fmt.Println("Error:", err)
os.Exit(1)
}
err = deleteKey(*storePath, int(id))
if err != nil {
fmt.Println("Error:", err)
os.Exit(1)
}
os.Exit(0)
default:
startSSH(*storePath, args)
}
}