144 lines
3.2 KiB
Go
144 lines
3.2 KiB
Go
package core
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import (
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"crypto/rsa"
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"encoding/base64"
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"errors"
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"github.com/special/notricochet/core/utils"
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"github.com/yawning/bulb/utils/pkcs1"
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"log"
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"sync"
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)
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// Identity represents the local user, including their contact address,
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// and contains the contacts list.
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type Identity struct {
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core *Ricochet
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mutex sync.Mutex
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address string
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privateKey *rsa.PrivateKey
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contactList *ContactList
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}
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func CreateIdentity(core *Ricochet) (*Identity, error) {
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me := &Identity{
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core: core,
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}
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if err := me.loadIdentity(); err != nil {
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log.Printf("Failed loading identity: %v", err)
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return nil, err
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}
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contactList, err := LoadContactList(core)
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if err != nil {
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log.Printf("Failed loading contact list: %v", err)
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return nil, err
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}
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me.contactList = contactList
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go me.publishService(me.privateKey)
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return me, nil
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}
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func (me *Identity) loadIdentity() error {
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config := me.core.Config.OpenRead()
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defer config.Close()
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if config.Identity.ServiceKey != "" {
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keyData, err := base64.StdEncoding.DecodeString(config.Identity.ServiceKey)
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if err != nil {
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return err
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}
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me.privateKey, _, err = pkcs1.DecodePrivateKeyDER(keyData)
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if err != nil {
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return err
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}
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me.address, err = utils.RicochetAddressFromKey(&me.privateKey.PublicKey)
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if err != nil {
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return err
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}
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log.Printf("Loaded identity %s", me.address)
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} else {
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log.Printf("Initializing new identity")
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}
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return nil
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}
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func (me *Identity) setPrivateKey(key *rsa.PrivateKey) error {
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me.mutex.Lock()
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defer me.mutex.Unlock()
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if me.privateKey != nil || me.address != "" {
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return errors.New("Cannot change private key on identity")
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}
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// Save key to config
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keyData, err := pkcs1.EncodePrivateKeyDER(key)
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if err != nil {
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return err
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}
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config := me.core.Config.OpenWrite()
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config.Identity.ServiceKey = base64.StdEncoding.EncodeToString(keyData)
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config.Save()
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// Update Identity
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me.address, err = utils.RicochetAddressFromKey(&key.PublicKey)
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if err != nil {
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return err
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}
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me.privateKey = key
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log.Printf("Created new identity %s", me.address)
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return nil
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}
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// BUG(special): No error handling for failures under publishService
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func (me *Identity) publishService(key *rsa.PrivateKey) {
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// This call will block until a control connection is available and the
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// ADD_ONION command has returned. After creating the listener, it will
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// be automatically re-published if the control connection is lost and
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// later reconnected.
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service, listener, err := me.core.Network.NewOnionListener(9878, key)
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if err != nil {
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log.Printf("Identity listener failed: %v", err)
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// XXX handle
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return
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}
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if key == nil {
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if service.PrivateKey == nil {
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log.Printf("Setting private key failed: no key returned")
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// XXX handle
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return
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}
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err := me.setPrivateKey(service.PrivateKey.(*rsa.PrivateKey))
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if err != nil {
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log.Printf("Setting private key failed: %v", err)
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// XXX handle
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return
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}
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}
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log.Printf("Identity service published, accepting connections")
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go me.core.Protocol.ServeListener(listener)
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}
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func (me *Identity) Address() string {
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return me.address
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}
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func (me *Identity) ContactList() *ContactList {
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return me.contactList
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}
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func (me *Identity) PrivateKey() rsa.PrivateKey {
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return *me.privateKey
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}
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