forked from cwtch.im/cwtch
342 lines
10 KiB
Go
342 lines
10 KiB
Go
package storage
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import (
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"cwtch.im/cwtch/event"
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"cwtch.im/cwtch/model"
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"encoding/json"
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"git.openprivacy.ca/openprivacy/libricochet-go/log"
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"os"
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"time"
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)
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const groupIDLen = 32
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const peerIDLen = 56
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const profileFilename = "profile"
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type profileStore struct {
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fs FileStore
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streamStores map[string]StreamStore // map [groupId|onion] StreamStore
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directory string
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password string
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profile *model.Profile
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eventManager event.Manager
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queue event.Queue
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writer bool
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}
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// ProfileStore is an interface to managing the storage of Cwtch Profiles
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type ProfileStore interface {
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Load() error
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Shutdown()
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Delete()
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GetProfileCopy(timeline bool) *model.Profile
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GetNewPeerMessage() *event.Event
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GetStatusMessages() []*event.Event
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}
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// NewProfileWriterStore returns a profile store backed by a filestore listening for events and saving them
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// directory should be $appDir/profiles/$rand
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func NewProfileWriterStore(eventManager event.Manager, directory, password string, profile *model.Profile) ProfileStore {
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os.Mkdir(directory, 0700)
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ps := &profileStore{fs: NewFileStore(directory, profileFilename, password), password: password, directory: directory, profile: profile, eventManager: eventManager, streamStores: map[string]StreamStore{}, writer: true}
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//ps.queue = event.NewQueue(100)
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ps.queue = event.NewQueue()
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if profile != nil {
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ps.save()
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}
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go ps.eventHandler()
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ps.eventManager.Subscribe(event.BlockPeer, ps.queue)
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ps.eventManager.Subscribe(event.UnblockPeer, ps.queue)
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ps.eventManager.Subscribe(event.PeerCreated, ps.queue)
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ps.eventManager.Subscribe(event.GroupCreated, ps.queue)
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ps.eventManager.Subscribe(event.SetProfileName, ps.queue)
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ps.eventManager.Subscribe(event.SetAttribute, ps.queue)
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ps.eventManager.Subscribe(event.SetPeerAttribute, ps.queue)
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ps.eventManager.Subscribe(event.SetGroupAttribute, ps.queue)
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ps.eventManager.Subscribe(event.AcceptGroupInvite, ps.queue)
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ps.eventManager.Subscribe(event.NewGroupInvite, ps.queue)
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ps.eventManager.Subscribe(event.NewMessageFromGroup, ps.queue)
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ps.eventManager.Subscribe(event.PeerStateChange, ps.queue)
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ps.eventManager.Subscribe(event.ServerStateChange, ps.queue)
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ps.eventManager.Subscribe(event.DeleteContact, ps.queue)
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ps.eventManager.Subscribe(event.DeleteGroup, ps.queue)
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ps.eventManager.Subscribe(event.ChangePassword, ps.queue)
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return ps
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}
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// ReadProfile reads a profile from storqage and returns the profile
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// directory should be $appDir/profiles/$rand
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func ReadProfile(directory, password string) (*model.Profile, error) {
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os.Mkdir(directory, 0700)
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ps := &profileStore{fs: NewFileStore(directory, profileFilename, password), password: password, directory: directory, profile: nil, eventManager: nil, streamStores: map[string]StreamStore{}, writer: true}
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err := ps.Load()
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if err != nil {
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return nil, err
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}
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profile := ps.GetProfileCopy(true)
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return profile, nil
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}
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// NewProfile creates a new profile for use in the profile store.
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func NewProfile(name string) *model.Profile {
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profile := model.GenerateNewProfile(name)
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return profile
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}
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// GetNewPeerMessage is for AppService to call on Reload events, to reseed the AppClient with the loaded peers
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func (ps *profileStore) GetNewPeerMessage() *event.Event {
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message := event.NewEventList(event.NewPeer, event.Identity, ps.profile.LocalID, event.Password, ps.password, event.Status, "running")
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return &message
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}
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func (ps *profileStore) GetStatusMessages() []*event.Event {
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messages := []*event.Event{}
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for _, contact := range ps.profile.Contacts {
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message := event.NewEvent(event.PeerStateChange, map[event.Field]string{
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event.RemotePeer: string(contact.Onion),
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event.ConnectionState: contact.State,
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})
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messages = append(messages, &message)
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}
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doneServers := make(map[string]bool)
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for _, group := range ps.profile.Groups {
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if _, exists := doneServers[group.GroupServer]; !exists {
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message := event.NewEvent(event.ServerStateChange, map[event.Field]string{
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event.GroupServer: string(group.GroupServer),
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event.ConnectionState: group.State,
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})
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messages = append(messages, &message)
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doneServers[group.GroupServer] = true
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}
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}
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return messages
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}
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func (ps *profileStore) ChangePassword(oldpass, newpass, eventID string) {
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if oldpass != ps.password {
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ps.eventManager.Publish(event.NewEventList(event.ChangePasswordError, event.Error, "Supplied current password does not match", event.EventID, eventID))
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return
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}
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newStreamStores := map[string]StreamStore{}
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idToNewLocalID := map[string]string{}
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// Generate all new StreamStores with the new password and write all the old StreamStore data into these ones
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for ssid, ss := range ps.streamStores {
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// New ss with new pass and new localID
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newlocalID := model.GenerateRandomID()
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idToNewLocalID[ssid] = newlocalID
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newSS := NewStreamStore(ps.directory, newlocalID, newpass)
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newStreamStores[ssid] = newSS
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// write whole store
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messages := ss.Read()
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newSS.WriteN(messages)
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}
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// Switch over
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oldStreamStores := ps.streamStores
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ps.streamStores = newStreamStores
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for ssid, newLocalID := range idToNewLocalID {
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if len(ssid) == groupIDLen {
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ps.profile.Groups[ssid].LocalID = newLocalID
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} else {
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ps.profile.Contacts[ssid].LocalID = newLocalID
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}
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}
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ps.password = newpass
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ps.fs.ChangePassword(newpass)
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ps.save()
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// Clean up
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for _, oldss := range oldStreamStores {
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oldss.Delete()
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}
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ps.eventManager.Publish(event.NewEventList(event.ChangePasswordSuccess, event.EventID, eventID))
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return
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}
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func (ps *profileStore) save() error {
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if ps.writer {
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bytes, _ := json.Marshal(ps.profile)
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return ps.fs.Write(bytes)
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}
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return nil
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}
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// Read instantiates a cwtchPeer from the file store
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func (ps *profileStore) Load() error {
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decrypted, err := ps.fs.Read()
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if err != nil {
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return err
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}
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cp := new(model.Profile)
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err = json.Unmarshal(decrypted, &cp)
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if err == nil {
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ps.profile = cp
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for gid, group := range cp.Groups {
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ss := NewStreamStore(ps.directory, group.LocalID, ps.password)
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cp.Groups[gid].Timeline.SetMessages(ss.Read())
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ps.streamStores[group.GroupID] = ss
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}
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}
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return err
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}
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func (ps *profileStore) GetProfileCopy(timeline bool) *model.Profile {
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return ps.profile.GetCopy(timeline)
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}
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func (ps *profileStore) eventHandler() {
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log.Infoln("eventHandler()!")
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for {
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ev := ps.queue.Next()
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log.Infof("eventHandler event %v\n", ev)
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switch ev.EventType {
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case event.BlockPeer:
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contact, exists := ps.profile.GetContact(ev.Data[event.RemotePeer])
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if exists {
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contact.Blocked = true
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ps.save()
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}
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case event.UnblockPeer:
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contact, exists := ps.profile.GetContact(ev.Data[event.RemotePeer])
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if exists {
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contact.Blocked = false
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ps.save()
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}
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case event.PeerCreated:
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var pp *model.PublicProfile
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json.Unmarshal([]byte(ev.Data[event.Data]), &pp)
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ps.profile.AddContact(ev.Data[event.RemotePeer], pp)
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// TODO: configure - allow peers to be configured to turn on limited storage
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/*ss := NewStreamStore(ps.directory, pp.LocalID, ps.password)
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pp.Timeline.SetMessages(ss.Read())
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ps.streamStores[pp.Onion] = ss
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ps.save()*/
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case event.GroupCreated:
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var group *model.Group
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json.Unmarshal([]byte(ev.Data[event.Data]), &group)
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ps.profile.AddGroup(group)
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ps.streamStores[group.GroupID] = NewStreamStore(ps.directory, group.LocalID, ps.password)
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ps.save()
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case event.SetProfileName:
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ps.profile.Name = ev.Data[event.ProfileName]
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ps.profile.SetAttribute("name", ev.Data[event.ProfileName])
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ps.save()
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case event.SetAttribute:
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ps.profile.SetAttribute(ev.Data[event.Key], ev.Data[event.Data])
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ps.save()
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case event.SetPeerAttribute:
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contact, exists := ps.profile.GetContact(ev.Data[event.RemotePeer])
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if exists {
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contact.SetAttribute(ev.Data[event.Key], ev.Data[event.Data])
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ps.save()
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} else {
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log.Errorf("error setting attribute on peer %v peer does not exist", ev)
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}
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case event.SetGroupAttribute:
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group := ps.profile.GetGroup(ev.Data[event.GroupID])
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if group != nil {
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group.SetAttribute(ev.Data[event.Key], ev.Data[event.Data])
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ps.save()
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} else {
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log.Errorf("error setting attribute on group %v group does not exist", ev)
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}
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case event.AcceptGroupInvite:
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err := ps.profile.AcceptInvite(ev.Data[event.GroupID])
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if err == nil {
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ps.save()
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} else {
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log.Errorf("error accepting group invite")
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}
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case event.NewGroupInvite:
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gid, err := ps.profile.ProcessInvite(ev.Data[event.GroupInvite], ev.Data[event.RemotePeer])
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log.Errorf("gid: %v err:%v\n", gid, err)
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if err == nil {
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ps.save()
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group := ps.profile.Groups[gid]
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ps.streamStores[group.GroupID] = NewStreamStore(ps.directory, group.LocalID, ps.password)
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} else {
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log.Errorf("error storing new group invite: %v (%v)", err, ev)
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}
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case event.NewMessageFromGroup:
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groupid := ev.Data[event.GroupID]
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received, _ := time.Parse(time.RFC3339Nano, ev.Data[event.TimestampReceived])
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sent, _ := time.Parse(time.RFC3339Nano, ev.Data[event.TimestampSent])
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message := model.Message{Received: received, Timestamp: sent, Message: ev.Data[event.Data], PeerID: ev.Data[event.RemotePeer], Signature: []byte(ev.Data[event.Signature]), PreviousMessageSig: []byte(ev.Data[event.PreviousSignature])}
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ss, exists := ps.streamStores[groupid]
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if exists {
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ss.Write(message)
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} else {
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log.Errorf("error storing new group message: %v stream store does not exist", ev)
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}
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case event.PeerStateChange:
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if _, exists := ps.profile.Contacts[ev.Data[event.RemotePeer]]; exists {
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ps.profile.Contacts[ev.Data[event.RemotePeer]].State = ev.Data[event.ConnectionState]
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}
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case event.ServerStateChange:
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for _, group := range ps.profile.Groups {
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if group.GroupServer == ev.Data[event.GroupServer] {
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group.State = ev.Data[event.ConnectionState]
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}
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}
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case event.DeleteContact:
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onion := ev.Data[event.RemotePeer]
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ps.profile.DeleteContact(onion)
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ps.save()
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case event.DeleteGroup:
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groupID := ev.Data[event.GroupID]
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ps.profile.DeleteGroup(groupID)
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ps.save()
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ss, exists := ps.streamStores[groupID]
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if exists {
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ss.Delete()
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delete(ps.streamStores, groupID)
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}
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case event.ChangePassword:
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oldpass := ev.Data[event.Password]
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newpass := ev.Data[event.NewPassword]
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ps.ChangePassword(oldpass, newpass, ev.EventID)
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default:
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return
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}
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}
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}
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func (ps *profileStore) Shutdown() {
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if ps.queue != nil {
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ps.queue.Shutdown()
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}
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}
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func (ps *profileStore) Delete() {
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log.Debugf("Delete ProfileStore for %v\n", ps.profile.Onion)
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for _, ss := range ps.streamStores {
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ss.Delete()
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}
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ps.fs.Delete()
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err := os.RemoveAll(ps.directory)
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if err != nil {
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log.Errorf("ProfileStore Delete error on RemoveAll on %v was %v\n", ps.directory, err)
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}
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}
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