authelia/internal/configuration/reader.go

104 lines
3.3 KiB
Go

package configuration
import (
_ "embed" // Embed config.template.yml.
"errors"
"fmt"
"io/ioutil"
"os"
"strings"
"github.com/spf13/viper"
"gopkg.in/yaml.v2"
"github.com/authelia/authelia/internal/configuration/schema"
"github.com/authelia/authelia/internal/configuration/validator"
"github.com/authelia/authelia/internal/logging"
)
// Read a YAML configuration and create a Configuration object out of it.
func Read(configPath string) (*schema.Configuration, []error) {
logger := logging.Logger()
if configPath == "" {
return nil, []error{errors.New("No config file path provided")}
}
_, err := os.Stat(configPath)
if err != nil {
errs := []error{
fmt.Errorf("Unable to find config file: %v", configPath),
fmt.Errorf("Generating config file: %v", configPath),
}
err = generateConfigFromTemplate(configPath)
if err != nil {
errs = append(errs, err)
} else {
errs = append(errs, fmt.Errorf("Generated configuration at: %v", configPath))
}
return nil, errs
}
file, err := ioutil.ReadFile(configPath)
if err != nil {
return nil, []error{fmt.Errorf("Failed to %v", err)}
}
var data interface{}
err = yaml.Unmarshal(file, &data)
if err != nil {
return nil, []error{fmt.Errorf("Error malformed %v", err)}
}
viper.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
viper.BindEnv("authelia.jwt_secret.file") //nolint:errcheck // TODO: Legacy code, consider refactoring time permitting.
viper.BindEnv("authelia.duo_api.secret_key.file") //nolint:errcheck // TODO: Legacy code, consider refactoring time permitting.
viper.BindEnv("authelia.session.secret.file") //nolint:errcheck // TODO: Legacy code, consider refactoring time permitting.
viper.BindEnv("authelia.authentication_backend.ldap.password.file") //nolint:errcheck // TODO: Legacy code, consider refactoring time permitting.
viper.BindEnv("authelia.notifier.smtp.password.file") //nolint:errcheck // TODO: Legacy code, consider refactoring time permitting.
viper.BindEnv("authelia.session.redis.password.file") //nolint:errcheck // TODO: Legacy code, consider refactoring time permitting.
viper.BindEnv("authelia.storage.mysql.password.file") //nolint:errcheck // TODO: Legacy code, consider refactoring time permitting.
viper.BindEnv("authelia.storage.postgres.password.file") //nolint:errcheck // TODO: Legacy code, consider refactoring time permitting.
viper.SetConfigFile(configPath)
_ = viper.ReadInConfig()
var configuration schema.Configuration
viper.Unmarshal(&configuration) //nolint:errcheck // TODO: Legacy code, consider refactoring time permitting.
val := schema.NewStructValidator()
validator.ValidateSecrets(&configuration, val, viper.GetViper())
validator.ValidateConfiguration(&configuration, val)
validator.ValidateKeys(val, viper.AllKeys())
if val.HasErrors() {
return nil, val.Errors()
}
if val.HasWarnings() {
for _, warn := range val.Warnings() {
logger.Warnf(warn.Error())
}
}
return &configuration, nil
}
//go:embed config.template.yml
var cfg []byte
func generateConfigFromTemplate(configPath string) error {
err := ioutil.WriteFile(configPath, cfg, 0600)
if err != nil {
return fmt.Errorf("Unable to generate %v: %v", configPath, err)
}
return nil
}