302 lines
7.4 KiB
Go
302 lines
7.4 KiB
Go
package agent
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import (
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"context"
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"encoding/json"
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"fmt"
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"net"
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"os"
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"time"
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"github.com/quexten/goldwarden/agent/actions"
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"github.com/quexten/goldwarden/agent/bitwarden"
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"github.com/quexten/goldwarden/agent/bitwarden/crypto"
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"github.com/quexten/goldwarden/agent/config"
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"github.com/quexten/goldwarden/agent/notify"
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"github.com/quexten/goldwarden/agent/processsecurity"
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"github.com/quexten/goldwarden/agent/sockets"
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"github.com/quexten/goldwarden/agent/ssh"
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"github.com/quexten/goldwarden/agent/vault"
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"github.com/quexten/goldwarden/ipc/messages"
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"github.com/quexten/goldwarden/logging"
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)
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const (
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FullSyncInterval = 60 * time.Minute
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TokenRefreshInterval = 10 * time.Minute
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)
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var log = logging.GetLogger("Goldwarden", "Agent")
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func writeError(c net.Conn, errMsg error) error {
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payload := messages.ActionResponse{
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Success: false,
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Message: errMsg.Error(),
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}
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payloadBytes, err := json.Marshal(payload)
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if err != nil {
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return err
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}
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_, err = c.Write(payloadBytes)
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if err != nil {
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return err
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}
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return nil
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}
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func serveAgentSession(c net.Conn, ctx context.Context, vault *vault.Vault, cfg *config.Config) {
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for {
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buf := make([]byte, 1024*1024)
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nr, err := c.Read(buf)
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if err != nil {
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return
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}
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data := buf[0:nr]
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var msg messages.IPCMessage
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err = json.Unmarshal(data, &msg)
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if err != nil {
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writeError(c, err)
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continue
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}
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responseBytes := []byte{}
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if action, actionFound := actions.AgentActionsRegistry.Get(msg.Type); actionFound {
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callingContext := sockets.GetCallingContext(c)
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payload, err := action(msg, cfg, vault, &callingContext)
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if err != nil {
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writeError(c, err)
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continue
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}
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responseBytes, err = json.Marshal(payload)
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if err != nil {
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writeError(c, err)
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continue
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}
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} else {
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payload := messages.ActionResponse{
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Success: false,
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Message: "Action not found",
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}
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payloadBytes, err := json.Marshal(payload)
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if err != nil {
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writeError(c, err)
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continue
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}
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responseBytes = payloadBytes
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}
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_, err = c.Write(responseBytes)
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if err != nil {
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log.Error("Failed writing to socket " + err.Error())
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}
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}
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}
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type AgentState struct {
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}
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func StartUnixAgent(path string, runtimeConfig config.RuntimeConfig) error {
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ctx := context.Background()
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var keyring crypto.Keyring
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if runtimeConfig.UseMemguard {
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keyring = crypto.NewMemguardKeyring(nil)
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} else {
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keyring = crypto.NewMemoryKeyring(nil)
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}
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var vault = vault.NewVault(&keyring)
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cfg, err := config.ReadConfig(runtimeConfig)
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if err != nil {
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log.Warn("Could not read config: %s", err.Error())
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cfg = config.DefaultConfig(runtimeConfig.UseMemguard)
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cfg.ConfigFile.RuntimeConfig = runtimeConfig
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cfg.WriteConfig()
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}
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cfg.ConfigFile.RuntimeConfig = runtimeConfig
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if cfg.ConfigFile.RuntimeConfig.ApiURI != "" {
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cfg.ConfigFile.ApiUrl = cfg.ConfigFile.RuntimeConfig.ApiURI
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}
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if cfg.ConfigFile.RuntimeConfig.IdentityURI != "" {
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cfg.ConfigFile.IdentityUrl = cfg.ConfigFile.RuntimeConfig.IdentityURI
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}
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if cfg.ConfigFile.RuntimeConfig.NotificationsURI != "" {
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cfg.ConfigFile.NotificationsUrl = cfg.ConfigFile.RuntimeConfig.NotificationsURI
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}
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if cfg.ConfigFile.RuntimeConfig.DeviceUUID != "" {
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cfg.ConfigFile.DeviceUUID = cfg.ConfigFile.RuntimeConfig.DeviceUUID
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}
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if !cfg.IsLocked() {
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log.Warn("Config is not locked. SET A PIN!!")
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token, err := cfg.GetToken()
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if err == nil {
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if token.AccessToken != "" {
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// attempt to sync every minute until successful
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for {
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bitwarden.RefreshToken(ctx, &cfg)
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userSymmetricKey, err := cfg.GetUserSymmetricKey()
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if err != nil {
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fmt.Println(err)
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time.Sleep(60 * time.Second)
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continue
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}
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var protectedUserSymetricKey crypto.SymmetricEncryptionKey
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if vault.Keyring.IsMemguard {
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protectedUserSymetricKey, err = crypto.MemguardSymmetricEncryptionKeyFromBytes(userSymmetricKey)
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} else {
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protectedUserSymetricKey, err = crypto.MemorySymmetricEncryptionKeyFromBytes(userSymmetricKey)
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}
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err = bitwarden.DoFullSync(context.WithValue(ctx, bitwarden.AuthToken{}, token.AccessToken), vault, &cfg, &protectedUserSymetricKey, true)
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if err != nil {
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fmt.Println(err)
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time.Sleep(60 * time.Second)
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continue
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} else {
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break
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}
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}
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}
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}
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}
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processsecurity.DisableDumpable()
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go func() {
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err = processsecurity.MonitorLocks(func() {
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cfg.Lock()
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vault.Clear()
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vault.Keyring.Lock()
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})
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if err != nil {
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log.Warn("Could not monitor screensaver: %s", err.Error())
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}
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}()
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go func() {
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err = processsecurity.MonitorIdle(func() {
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log.Warn("Idling detected but no action is implemented")
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})
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if err != nil {
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log.Warn("Could not monitor idle: %s", err.Error())
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}
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}()
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go func() {
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err = notify.ListenForNotifications()
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if err != nil {
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log.Warn("Could not listen for notifications: %s", err.Error())
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}
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}()
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go func() {
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if !runtimeConfig.WebsocketDisabled {
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for {
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// polling, switch this to signal based later
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if !cfg.IsLocked() && cfg.IsLoggedIn() {
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bitwarden.RunWebsocketDaemon(ctx, vault, &cfg)
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time.Sleep(60 * time.Second)
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}
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time.Sleep(1 * time.Second)
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}
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}
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}()
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if !runtimeConfig.DisableSSHAgent {
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vaultAgent := ssh.NewVaultAgent(vault, &cfg, &runtimeConfig)
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vaultAgent.SetUnlockRequestAction(func() bool {
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err := cfg.TryUnlock(vault)
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if err == nil {
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token, err := cfg.GetToken()
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if err == nil {
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if token.AccessToken != "" {
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gotToken := bitwarden.RefreshToken(ctx, &cfg)
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if !gotToken {
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log.Warn("Could not get token")
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return false
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}
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userSymmetricKey, err := cfg.GetUserSymmetricKey()
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if err != nil {
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log.Error("Could not get user symmetric key: %s", err.Error())
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}
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var protectedUserSymetricKey crypto.SymmetricEncryptionKey
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if vault.Keyring.IsMemguard {
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protectedUserSymetricKey, err = crypto.MemguardSymmetricEncryptionKeyFromBytes(userSymmetricKey)
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} else {
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protectedUserSymetricKey, err = crypto.MemorySymmetricEncryptionKeyFromBytes(userSymmetricKey)
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}
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err = bitwarden.DoFullSync(context.WithValue(ctx, bitwarden.AuthToken{}, token.AccessToken), vault, &cfg, &protectedUserSymetricKey, true)
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if err != nil {
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log.Error("Could not sync: %s", err.Error())
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}
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} else {
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log.Warn("Access token is empty")
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}
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} else {
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log.Error("Could not get token: %s", err.Error())
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}
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return true
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} else {
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log.Warn("Could not unlock: %s", err.Error())
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}
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return false
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})
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go vaultAgent.Serve()
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}
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go func() {
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for {
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time.Sleep(TokenRefreshInterval)
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if !cfg.IsLocked() {
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bitwarden.RefreshToken(ctx, &cfg)
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}
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}
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}()
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go func() {
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for {
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time.Sleep(FullSyncInterval)
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if !cfg.IsLocked() {
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bitwarden.RefreshToken(ctx, &cfg)
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token, err := cfg.GetToken()
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if err != nil {
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log.Warn("Could not get token: %s", err.Error())
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continue
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}
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bitwarden.DoFullSync(context.WithValue(ctx, bitwarden.AuthToken{}, token), vault, &cfg, nil, false)
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}
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}
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}()
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if _, err := os.Stat(path); err == nil {
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if err := os.Remove(path); err != nil {
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return err
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}
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}
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l, err := net.Listen("unix", path)
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if err != nil {
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println("listen error", err.Error())
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return err
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}
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log.Info("Agent listening on %s...", path)
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go func() {
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for {
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fd, err := l.Accept()
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if err != nil {
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println("accept error", err.Error())
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} else {
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log.Info("Accepted unix socket connection; handling request")
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}
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go serveAgentSession(fd, ctx, vault, &cfg)
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}
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}()
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mainloop()
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return nil
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}
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