ooni-probe-cli/config/parser.go

120 lines
2.4 KiB
Go

package config
import (
"encoding/json"
"io/ioutil"
"os"
"path/filepath"
"sync"
"github.com/ooni/probe-cli/utils"
"github.com/pkg/errors"
)
// ReadConfig reads the configuration from the path
func ReadConfig(path string) (*Config, error) {
b, err := ioutil.ReadFile(path)
if os.IsNotExist(err) {
c := &Config{}
if err = c.Default(); err != nil {
return nil, errors.Wrap(err, "defaulting")
}
if err = c.Validate(); err != nil {
return nil, errors.Wrap(err, "validating")
}
return c, nil
}
if err != nil {
return nil, errors.Wrap(err, "reading file")
}
c, err := ParseConfig(b)
if err != nil {
return nil, errors.Wrap(err, "parsing config")
}
c.path = path
return c, err
}
// ParseConfig returns config from JSON bytes.
func ParseConfig(b []byte) (*Config, error) {
c := &Config{}
if err := json.Unmarshal(b, c); err != nil {
return nil, errors.Wrap(err, "parsing json")
}
if err := c.Default(); err != nil {
return nil, errors.Wrap(err, "defaulting")
}
if err := c.Validate(); err != nil {
return nil, errors.Wrap(err, "validating")
}
return c, nil
}
// Config for the OONI Probe installation
type Config struct {
// Private settings
Comment string `json:"_"`
Version int64 `json:"_version"`
InformedConsent bool `json:"_informed_consent"`
AutoUpdate bool `json:"auto_update"`
Sharing Sharing `json:"sharing"`
Notifications Notifications `json:"notifications"`
AutomatedTesting AutomatedTesting `json:"automated_testing"`
NettestGroups NettestGroups `json:"test_settings"`
Advanced Advanced `json:"advanced"`
mutex sync.Mutex
path string
}
// Write the config file in json to the path
func (c *Config) Write() error {
c.Lock()
configJSON, _ := json.MarshalIndent(c, "", " ")
if c.path == "" {
return errors.New("config file path is empty")
}
if err := ioutil.WriteFile(c.path, configJSON, 0644); err != nil {
return errors.Wrap(err, "writing config JSON")
}
c.Unlock()
return nil
}
// Lock acquires the write mutex
func (c *Config) Lock() {
c.mutex.Lock()
}
// Unlock releases the write mutex
func (c *Config) Unlock() {
c.mutex.Unlock()
}
// Default config settings
func (c *Config) Default() error {
home, err := utils.GetOONIHome()
if err != nil {
return err
}
c.path = filepath.Join(home, "config.json")
return nil
}
// Validate the config file
func (c *Config) Validate() error {
return nil
}