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config.go
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config.go
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package main
import (
"encoding/json"
"flag"
"fmt"
"io/ioutil"
"log"
"net/url"
"os"
"os/user"
"path/filepath"
"strings"
"crypto/tls"
"net/http"
)
type configCommand struct {
config *ClientConfig
}
// skipVerifyHTTPClient returns an *http.Client with InsecureSkipVerify set
// to true for its TLS config. This allows self-signed SSL certificates.
func skipVerifyHTTPClient(skipVerify bool) *http.Client {
if skipVerify {
tlsConfig := &tls.Config{InsecureSkipVerify: true}
transport := &http.Transport{TLSClientConfig: tlsConfig}
return &http.Client{Transport: transport}
}
return http.DefaultClient
}
func (cmd *configCommand) Run(args []string) error {
if len(args) < 1 {
cmd.Usage()
os.Exit(1)
}
var config *ClientConfig
if cfg, err := LoadClientConfig(); err == nil {
config = cfg
} else {
config = new(ClientConfig)
}
var run func(*ClientConfig, []string) error
switch strings.ToLower(args[0]) {
case "set":
run = setCmd
case "print":
printConfig()
return nil
default:
cmd.Usage()
os.Exit(1)
}
return run(config, args[1:])
}
func printConfig() {
path, err := clientConfigPath()
if err != nil {
log.Fatal(err)
}
cfgData, err := ioutil.ReadFile(path)
if err != nil {
log.Fatal(err)
}
fmt.Println(string(cfgData))
}
func (cmd *configCommand) Usage() error {
const help = `
mdmctl config print
mdmctl config set -h
`
fmt.Println(help)
return nil
}
func setCmd(cfg *ClientConfig, args []string) error {
flagset := flag.NewFlagSet("set", flag.ExitOnError)
var (
flToken = flagset.String("api-token", "", "api token to connect to micromdm server")
flServerURL = flagset.String("server-url", "", "server url of micromdm server")
flSkipVerify = flagset.Bool("skip-verify", false, "skip verification of server certificate (insecure)")
)
flagset.Usage = usageFor(flagset, "mdmctl config set [flags]")
if err := flagset.Parse(args); err != nil {
return err
}
if *flToken != "" {
cfg.APIToken = *flToken
}
if *flServerURL != "" {
if !strings.HasPrefix(*flServerURL, "http") ||
!strings.HasPrefix(*flServerURL, "https") {
*flServerURL = "https://" + *flServerURL
}
u, err := url.Parse(*flServerURL)
if err != nil {
return err
}
u.Scheme = "https"
u.Path = "/"
cfg.ServerURL = u.String()
}
cfg.SkipVerify = *flSkipVerify
return SaveClientConfig(cfg)
}
func clientConfigPath() (string, error) {
usr, err := user.Current()
if err != nil {
return "", err
}
return filepath.Join(usr.HomeDir, ".micromdm", "default.json"), err
}
func SaveClientConfig(cfg *ClientConfig) error {
configPath, err := clientConfigPath()
if err != nil {
return err
}
if _, err := os.Stat(filepath.Dir(configPath)); os.IsNotExist(err) {
if err := os.MkdirAll(filepath.Dir(configPath), 0777); err != nil {
return err
}
}
f, err := os.OpenFile(configPath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0600)
if err != nil {
return err
}
defer f.Close()
if cfg == nil {
cfg = new(ClientConfig)
}
enc := json.NewEncoder(f)
enc.SetIndent("", " ")
return enc.Encode(cfg)
}
func LoadClientConfig() (*ClientConfig, error) {
path, err := clientConfigPath()
if err != nil {
return nil, err
}
cfgData, err := ioutil.ReadFile(path)
if err != nil {
return nil, fmt.Errorf("unable to load default config file: %s", err)
}
var cfg ClientConfig
err = json.Unmarshal(cfgData, &cfg)
if err != nil {
return nil, fmt.Errorf("failed to unmarshal %s : %s", path, err)
}
return &cfg, nil
}
type ClientConfig struct {
APIToken string `json:"api_token"`
ServerURL string `json:"server_url"`
SkipVerify bool `json:"skip_verify"`
}