forked from cwtch.im/cwtch
103 lines
2.8 KiB
Go
103 lines
2.8 KiB
Go
package server
|
|
|
|
import (
|
|
"crypto/rsa"
|
|
"encoding/json"
|
|
"git.openprivacy.ca/openprivacy/libricochet-go/utils"
|
|
"io/ioutil"
|
|
"log"
|
|
"sync"
|
|
)
|
|
|
|
// Reporting is a struct for storing a the config a server needs to be a peer, and connect to a group to report
|
|
type Reporting struct {
|
|
LogMetricsToFile bool `json:"logMetricsToFile"`
|
|
PeerPrivateKey string `json:"privateKey"`
|
|
ReportingGroupID string `json:"reportingGroupId"`
|
|
ReportingServerAddr string `json:"reportingServerAddr"`
|
|
}
|
|
|
|
// Config is a struct for storing basic server configuration
|
|
type Config struct {
|
|
MaxBufferLines int `json:"maxBufferLines"`
|
|
PrivateKeyBytes string `json:"privateKey"`
|
|
ServerReporting Reporting `json:"serverReporting"`
|
|
lock sync.Mutex
|
|
}
|
|
|
|
// PrivateKey returns an rsa.PrivateKey generated from the config's PrivateKeyBytes
|
|
func (config *Config) PrivateKey() *rsa.PrivateKey {
|
|
pk, err := utils.ParsePrivateKey([]byte(config.PrivateKeyBytes))
|
|
if err != nil {
|
|
log.Println("Error parsing private key: ", err)
|
|
}
|
|
return pk
|
|
}
|
|
|
|
// Save dumps the latest version of the config to a json file given by filename
|
|
func (config *Config) Save(filename string) {
|
|
config.lock.Lock()
|
|
defer config.lock.Unlock()
|
|
bytes, _ := json.MarshalIndent(config, "", "\t")
|
|
ioutil.WriteFile(filename, bytes, 0600)
|
|
}
|
|
|
|
// newConfig generates a simple config with defaults. Unmarshal will return them if they aren't specified
|
|
func newConfig() *Config {
|
|
config := Config{}
|
|
config.MaxBufferLines = 100000
|
|
config.ServerReporting.LogMetricsToFile = false
|
|
|
|
return &config
|
|
}
|
|
|
|
// LoadConfig loads a Config from a json file specified by filename
|
|
func LoadConfig(filename string) *Config {
|
|
config := newConfig()
|
|
|
|
raw, err := ioutil.ReadFile(filename)
|
|
if err == nil {
|
|
err = json.Unmarshal(raw, &config)
|
|
|
|
if err != nil {
|
|
log.Println("Error reading config: ", err)
|
|
}
|
|
}
|
|
|
|
configAutoPopulate(config)
|
|
// Always save (first time generation, new version with new variables populated)
|
|
config.Save(filename)
|
|
return config
|
|
}
|
|
|
|
// Auto populate required values if missing and save
|
|
func configAutoPopulate(config *Config) {
|
|
if config.PrivateKeyBytes == "" {
|
|
config.generatePrivateKey()
|
|
}
|
|
|
|
if config.ServerReporting.PeerPrivateKey == "" {
|
|
config.generatePeerPrivateKey()
|
|
}
|
|
}
|
|
|
|
func (config *Config) generatePrivateKey() {
|
|
pk, err := utils.GeneratePrivateKey()
|
|
if err != nil {
|
|
log.Fatalf("error generating new private key: %v\n", err)
|
|
}
|
|
config.lock.Lock()
|
|
config.PrivateKeyBytes = utils.PrivateKeyToString(pk)
|
|
config.lock.Unlock()
|
|
}
|
|
|
|
func (config *Config) generatePeerPrivateKey() {
|
|
pk, err := utils.GeneratePrivateKey()
|
|
if err != nil {
|
|
log.Fatalf("error generating new peer private key: %v\n", err)
|
|
}
|
|
config.lock.Lock()
|
|
config.ServerReporting.PeerPrivateKey = utils.PrivateKeyToString(pk)
|
|
config.lock.Unlock()
|
|
}
|