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console.go
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console.go
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package options
import (
"crypto/tls"
"fmt"
"log"
"os"
"os/user"
"path"
"google.golang.org/grpc/credentials"
"gopkg.in/yaml.v2"
)
const (
CONSOLE_CONFIG_FILENAME = "console.yaml"
INITIAL_CONSOLE_CONFIG = `
server: "localhost:10110"
editor: vim
terminal: "xterm -xrm 'XTerm.vt100.allowTitleOps: false' -title {{.Name}} -e {{.Cmd}}"
tls:
enabled: false
ca: ""
cert: ""
key: ""
`
)
type NetemConsoleConfig struct {
Server string
Editor string
Terminal string
Tls TLSOptions
}
var (
ConsoleConfig = NetemConsoleConfig{}
)
func InitConsoleConfig() {
err := yaml.Unmarshal([]byte(INITIAL_CONSOLE_CONFIG), &ConsoleConfig)
if err != nil {
log.Fatalf("Unable to initialize console config: %v", err)
}
currentUser, err := user.Current()
if err != nil {
log.Fatalf("Unable to get current user: %v", err)
}
config := path.Join(currentUser.HomeDir, ".config", "gonetem-console", CONSOLE_CONFIG_FILENAME)
if err := os.MkdirAll(path.Dir(config), 0755); err != nil {
log.Fatalf("Unable to create config directory for user: %s", err)
}
if _, err := os.Stat(config); err == nil {
data, err := os.ReadFile(config)
if err != nil {
log.Fatalf("Unable to read user config file %s: %s", config, err)
}
if err := yaml.Unmarshal(data, &ConsoleConfig); err != nil {
log.Fatalf("Unable to read user config file %s: %s", config, err)
}
} else {
if err := SaveConsoleConfig(); err != nil {
log.Fatalf("Unable to save initial user config: %s", err)
}
}
}
func SaveConsoleConfig() error {
currentUser, err := user.Current()
if err != nil {
return fmt.Errorf("unable to get current user: %f", err)
}
config := path.Join(currentUser.HomeDir, ".config", "gonetem-console", CONSOLE_CONFIG_FILENAME)
data, _ := yaml.Marshal(ConsoleConfig)
return os.WriteFile(config, data, 0644)
}
func LoadConsoleTLSCredentials() (credentials.TransportCredentials, error) {
certPool, consoleCerts, err := loadTLSCerts(ConsoleConfig.Tls)
if err != nil {
return nil, err
}
// Create the credentials and return it
config := &tls.Config{
Certificates: consoleCerts,
RootCAs: certPool,
}
return credentials.NewTLS(config), nil
}