wg-portal/internal/server/configuration.go
2021-03-21 12:36:11 +01:00

134 lines
4.1 KiB
Go

package server
import (
"os"
"reflect"
"runtime"
"github.com/h44z/wg-portal/internal/common"
"github.com/h44z/wg-portal/internal/ldap"
"github.com/h44z/wg-portal/internal/wireguard"
"github.com/kelseyhightower/envconfig"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"gopkg.in/yaml.v3"
)
var ErrInvalidSpecification = errors.New("specification must be a struct pointer")
// loadConfigFile parses yaml files. It uses yaml annotation to store the data in a struct.
func loadConfigFile(cfg interface{}, filename string) error {
s := reflect.ValueOf(cfg)
if s.Kind() != reflect.Ptr {
return ErrInvalidSpecification
}
s = s.Elem()
if s.Kind() != reflect.Struct {
return ErrInvalidSpecification
}
f, err := os.Open(filename)
if err != nil {
return errors.Wrapf(err, "failed to open config file %s", filename)
}
defer f.Close()
decoder := yaml.NewDecoder(f)
err = decoder.Decode(cfg)
if err != nil {
return errors.Wrapf(err, "failed to decode config file %s", filename)
}
return nil
}
// loadConfigEnv processes envconfig annotations and loads environment variables to the given configuration struct.
func loadConfigEnv(cfg interface{}) error {
err := envconfig.Process("", cfg)
if err != nil {
return errors.Wrap(err, "failed to process environment config")
}
return nil
}
type Config struct {
Core struct {
ListeningAddress string `yaml:"listeningAddress" envconfig:"LISTENING_ADDRESS"`
ExternalUrl string `yaml:"externalUrl" envconfig:"EXTERNAL_URL"`
Title string `yaml:"title" envconfig:"WEBSITE_TITLE"`
CompanyName string `yaml:"company" envconfig:"COMPANY_NAME"`
MailFrom string `yaml:"mailFrom" envconfig:"MAIL_FROM"`
AdminUser string `yaml:"adminUser" envconfig:"ADMIN_USER"` // must be an email address
AdminPassword string `yaml:"adminPass" envconfig:"ADMIN_PASS"`
EditableKeys bool `yaml:"editableKeys" envconfig:"EDITABLE_KEYS"`
CreateDefaultPeer bool `yaml:"createDefaultPeer" envconfig:"CREATE_DEFAULT_PEER"`
LdapEnabled bool `yaml:"ldapEnabled" envconfig:"LDAP_ENABLED"`
} `yaml:"core"`
Database common.DatabaseConfig `yaml:"database"`
Email common.MailConfig `yaml:"email"`
LDAP ldap.Config `yaml:"ldap"`
WG wireguard.Config `yaml:"wg"`
}
func NewConfig() *Config {
cfg := &Config{}
// Default config
cfg.Core.ListeningAddress = ":8123"
cfg.Core.Title = "WireGuard VPN"
cfg.Core.CompanyName = "WireGuard Portal"
cfg.Core.ExternalUrl = "http://localhost:8123"
cfg.Core.MailFrom = "WireGuard VPN <noreply@company.com>"
cfg.Core.AdminUser = "admin@wgportal.local"
cfg.Core.AdminPassword = "wgportal"
cfg.Core.LdapEnabled = false
cfg.Database.Typ = "sqlite"
cfg.Database.Database = "data/wg_portal.db"
cfg.LDAP.URL = "ldap://srv-ad01.company.local:389"
cfg.LDAP.BaseDN = "DC=COMPANY,DC=LOCAL"
cfg.LDAP.StartTLS = true
cfg.LDAP.BindUser = "company\\\\ldap_wireguard"
cfg.LDAP.BindPass = "SuperSecret"
cfg.LDAP.Type = "AD"
cfg.LDAP.UserClass = "organizationalPerson"
cfg.LDAP.EmailAttribute = "mail"
cfg.LDAP.FirstNameAttribute = "givenName"
cfg.LDAP.LastNameAttribute = "sn"
cfg.LDAP.PhoneAttribute = "telephoneNumber"
cfg.LDAP.GroupMemberAttribute = "memberOf"
cfg.LDAP.DisabledAttribute = "userAccountControl"
cfg.LDAP.AdminLdapGroup = "CN=WireGuardAdmins,OU=_O_IT,DC=COMPANY,DC=LOCAL"
cfg.WG.DeviceNames = []string{"wg0"}
cfg.WG.DefaultDeviceName = "wg0"
cfg.WG.ConfigDirectoryPath = "/etc/wireguard"
cfg.WG.ManageIPAddresses = true
cfg.Email.Host = "127.0.0.1"
cfg.Email.Port = 25
// Load config from file and environment
cfgFile, ok := os.LookupEnv("CONFIG_FILE")
if !ok {
cfgFile = "config.yml" // Default config file
}
err := loadConfigFile(cfg, cfgFile)
if err != nil {
logrus.Warnf("unable to load config.yml file: %v, using default configuration...", err)
}
err = loadConfigEnv(cfg)
if err != nil {
logrus.Warnf("unable to load environment config: %v", err)
}
if cfg.WG.ManageIPAddresses && runtime.GOOS != "linux" {
logrus.Warnf("managing IP addresses only works on linux, feature disabled...")
cfg.WG.ManageIPAddresses = false
}
return cfg
}