Allow Caching of Tor Data Directories

- Also deletes unused data directories on startup.

features/servers/servers_functionality.go

@@ -110,7 +110,7 @@ func (sf *ServersFunctionality) Enable() {
 
 func (sf *ServersFunctionality) LoadServers(password string) ([]string, error) {
 	servers, err := appServers.LoadServers(password)
-	// server:1.3/libcwtch-go:1.4 accidentely enabled monitor logging by default. make sure it's turned off
+	// server:1.3/libcwtch-go:1.4 accidentally enabled monitor logging by default. make sure it's turned off
 	for _, onion := range servers {
 		server := appServers.GetServer(onion)
 		server.SetMonitorLogging(false)

go.mod

@@ -5,7 +5,7 @@ go 1.15
 require (
 	cwtch.im/cwtch v0.14.12
 	git.openprivacy.ca/cwtch.im/server v1.4.2
-	git.openprivacy.ca/openprivacy/connectivity v1.7.0
+	git.openprivacy.ca/openprivacy/connectivity v1.8.0
 	git.openprivacy.ca/openprivacy/log v1.0.3
 	github.com/mutecomm/go-sqlcipher/v4 v4.4.2
 	golang.org/x/net v0.0.0-20211015210444-4f30a5c0130f // indirect

go.sum

@@ -25,8 +25,9 @@ git.openprivacy.ca/openprivacy/bine v0.0.4 h1:CO7EkGyz+jegZ4ap8g5NWRuDHA/56KKvGy
 git.openprivacy.ca/openprivacy/bine v0.0.4/go.mod h1:13ZqhKyqakDsN/ZkQkIGNULsmLyqtXc46XBcnuXm/mU=
 git.openprivacy.ca/openprivacy/connectivity v1.5.0/go.mod h1:UjQiGBnWbotmBzIw59B8H6efwDadjkKzm3RPT1UaIRw=
 git.openprivacy.ca/openprivacy/connectivity v1.6.0/go.mod h1:UjQiGBnWbotmBzIw59B8H6efwDadjkKzm3RPT1UaIRw=
-git.openprivacy.ca/openprivacy/connectivity v1.7.0 h1:h3NZsxY0/viqyrLInu/S/3t23ehAYmhJm7rsHPvm8NU=
 git.openprivacy.ca/openprivacy/connectivity v1.7.0/go.mod h1:UjQiGBnWbotmBzIw59B8H6efwDadjkKzm3RPT1UaIRw=
+git.openprivacy.ca/openprivacy/connectivity v1.8.0 h1:/jnc/2LuUpli2NgeLw6zOAVESHrz5mr10kDCQHyZ7R4=
+git.openprivacy.ca/openprivacy/connectivity v1.8.0/go.mod h1:UjQiGBnWbotmBzIw59B8H6efwDadjkKzm3RPT1UaIRw=
 git.openprivacy.ca/openprivacy/log v1.0.2/go.mod h1:gGYK8xHtndRLDymFtmjkG26GaMQNgyhioNS82m812Iw=
 git.openprivacy.ca/openprivacy/log v1.0.3 h1:E/PMm4LY+Q9s3aDpfySfEDq/vYQontlvNj/scrPaga0=
 git.openprivacy.ca/openprivacy/log v1.0.3/go.mod h1:gGYK8xHtndRLDymFtmjkG26GaMQNgyhioNS82m812Iw=

lib.go

@@ -10,6 +10,8 @@ import (
 	"crypto/rand"
 	"encoding/json"
 	"fmt"
+	"io/ioutil"
+	"path"
 	"strconv"
 
 	constants2 "cwtch.im/cwtch/model/constants"
@@ -195,6 +197,8 @@ func _startCwtch(appDir string, torPath string) {
 		event.FileDownloaded,
 	}
 
+	// Settings may have changed...
+	settings = utils.ReadGlobalSettings()
 	settingsJson, _ := json.Marshal(settings)
 
 	application.LoadProfiles(constants.DefactoPasswordForUnencryptedProfiles)
@@ -260,7 +264,32 @@ func buildACN(settings utils.GlobalSettings, torPath string, appDir string) conn
 		return &connectivity.ErrorACN{}
 	}
 
-	acn, err := tor.NewTorACNWithAuth(appDir, torPath, controlPort, tor.HashedPasswordAuthenticator{Password: base64.StdEncoding.EncodeToString(key)})
+	dataDir := settings.TorCacheDir
+	if !settings.UseTorCache {
+
+		// purge data dir directories if we are not using them for a cache
+		torDir := path.Join(appDir, "tor")
+		files, err := filepath.Glob(path.Join(torDir, "data-dir-*"))
+		if err != nil {
+			log.Errorf("could not construct filesystem glob: %v", err)
+		}
+		for _, f := range files {
+			if err := os.RemoveAll(f); err != nil {
+				log.Errorf("could not remove data-dir: %v", err)
+			}
+		}
+
+		if dataDir, err = ioutil.TempDir(torDir, "data-dir-"); err != nil {
+			eventHandler.Push(event.NewEventList(utils.CwtchStartError, event.Error, fmt.Sprintf("Error connecting to Tor: %v", err)))
+			return &connectivity.ErrorACN{}
+		}
+	}
+
+	// Persist Current Data Dir as Tor Cache...
+	settings.TorCacheDir = dataDir
+	utils.WriteGlobalSettings(settings)
+
+	acn, err := tor.NewTorACNWithAuth(appDir, torPath, dataDir, controlPort, tor.HashedPasswordAuthenticator{Password: base64.StdEncoding.EncodeToString(key)})
 	if err != nil {
 		log.Errorf("Error connecting to Tor replacing with ErrorACN: %v\n", err)
 		eventHandler.Push(event.NewEventList(utils.CwtchStartError, event.Error, fmt.Sprintf("Error connecting to Tor: %v", err)))
@@ -296,7 +325,7 @@ func ReconnectCwtchForeground() {
 		profile := application.GetPeer(profileOnion)
 		conversations, _ := profile.FetchConversations()
 		for _, conversation := range conversations {
-			if (conversation.IsGroup() && groupHandler != nil) || conversation.IsServer() == false {
+			if (conversation.IsGroup() && groupHandler != nil) || !conversation.IsServer() {
 				totalMessages, _ := profile.GetChannelMessageCount(conversation.ID, 0)
 				eventHandler.Push(event.NewEvent(event.MessageCounterResync, map[event.Field]string{
 					event.Identity:       profileOnion,

utils/settings.go

@@ -46,6 +46,8 @@ type GlobalSettings struct {
 	UseExternalTor          bool
 	CustomSocksPort         int
 	CustomControlPort       int
+	UseTorCache             bool
+	TorCacheDir             string
 }
 
 var DefaultGlobalSettings = GlobalSettings{
@@ -66,6 +68,8 @@ var DefaultGlobalSettings = GlobalSettings{
 	UseCustomTorrc:          false,
 	CustomSocksPort:         -1,
 	CustomControlPort:       -1,
+	UseTorCache:             false,
+	TorCacheDir:             "",
 }
 
 func InitGlobalSettingsFile(directory string, password string) error {