WIP adapt ssh server sketch to urdt setup
This commit is contained in:
lash
parent
e754773bce
commit
5cac17676a
GPG Key ID:
21D2E7BB88C2A746
240
cmd/ssh/main.go
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240
cmd/ssh/main.go
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@ -0,0 +1,240 @@
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package main
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import (
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"context"
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"flag"
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"fmt"
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"log"
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"net"
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"path"
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"os"
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"sync"
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"golang.org/x/crypto/ssh"
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"git.defalsify.org/vise.git/db"
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"git.defalsify.org/vise.git/engine"
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"git.defalsify.org/vise.git/logging"
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"git.defalsify.org/vise.git/resource"
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gdbmdb "git.defalsify.org/vise.git/db/gdbm"
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"git.grassecon.net/urdt/ussd/internal/handlers"
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"git.grassecon.net/urdt/ussd/internal/storage"
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"git.grassecon.net/urdt/ussd/internal/handlers/ussd"
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)
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var (
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wg sync.WaitGroup
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auth map[string]string
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keyStore db.Db
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logg = logging.NewVanilla()
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scriptDir = path.Join("services", "registration")
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)
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type auther struct {
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SessionId string
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Ctx context.Context
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}
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func(a *auther) Check(conn ssh.ConnMetadata, pubKey ssh.PublicKey) (*ssh.Permissions, error) {
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keyStore.SetPrefix(storage.DATATYPE_CUSTOM)
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k := append([]byte{0x01}, pubKey.Marshal()...)
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v, err := keyStore.Get(a.Ctx, k)
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if err != nil {
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return nil, err
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}
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a.SessionId = string(v)
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fmt.Fprintf(os.Stderr, "connect: %s\n", a.SessionId)
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return nil, nil
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}
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func populateAuth() {
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auth = make(map[string]string)
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pubKey, _, _, rest, err := ssh.ParseAuthorizedKey([]byte("ssh-rsa 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 lash@furioso"))
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if err != nil {
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panic(err)
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}
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auth[string(pubKey.Marshal())] = "+25113243546"
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_ = rest
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}
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func serve(ch ssh.NewChannel) {
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if ch == nil {
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return
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}
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if ch.ChannelType() != "session" {
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ch.Reject(ssh.UnknownChannelType, "that is not the channel you are looking for")
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return
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}
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channel, requests, err := ch.Accept()
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if err != nil {
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panic(err)
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}
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defer channel.Close()
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wg.Add(1)
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go func(reqIn <-chan *ssh.Request) {
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defer wg.Done()
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for req := range reqIn {
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req.Reply(req.Type == "shell", nil)
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}
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_ = requests
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}(requests)
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n, err := channel.Write([]byte("foobarbaz\n"))
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if err != nil {
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panic(err)
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}
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log.Printf("wrote %d", n)
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}
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func sshRun(ctx context.Context, hl *ussd.Handlers) {
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running := true
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defer wg.Wait()
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auth := auther{Ctx: ctx}
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cfg := ssh.ServerConfig{
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PublicKeyCallback: auth.Check,
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}
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privateBytes, err := os.ReadFile("/home/lash/.ssh/id_rsa_tmp")
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if err != nil {
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log.Fatal("Failed to load private key: ", err)
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}
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private, err := ssh.ParsePrivateKey(privateBytes)
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if err != nil {
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log.Fatal("Failed to parse private key: ", err)
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}
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cfg.AddHostKey(private)
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lst, err := net.Listen("tcp", "0.0.0.0:2022")
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if err != nil {
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panic(err)
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}
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for running {
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conn, err := lst.Accept()
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if err != nil {
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panic(err)
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}
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go func(conn net.Conn) {
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defer conn.Close()
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for true {
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srvConn, nC, rC, err := ssh.NewServerConn(conn, &cfg)
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if err != nil {
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log.Printf("rejected client: %v", err)
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}
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log.Printf("haveconn %v", srvConn)
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wg.Add(1)
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go func() {
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ssh.DiscardRequests(rC)
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wg.Done()
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}()
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for ch := range nC {
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serve(ch)
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}
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}
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}(conn)
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}
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}
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func sshLoadKeys(ctx context.Context, dbDir string) error {
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keyStoreFile := path.Join(dbDir, "ssh_authorized_keys.gdbm")
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keyStore = gdbmdb.NewGdbmDb()
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keyStore.Connect(ctx, keyStoreFile)
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pubKey, _, _, _, err := ssh.ParseAuthorizedKey([]byte("ssh-rsa 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 lash@furioso"))
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if err != nil {
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return err
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}
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//auth[string(pubKey.Marshal())] = "+25113243546"
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k := append([]byte{0x01}, pubKey.Marshal()...)
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keyStore.SetPrefix(storage.DATATYPE_CUSTOM)
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return keyStore.Put(ctx, k, []byte("+25113243546"))
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}
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func main() {
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var dbDir string
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var resourceDir string
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var size uint
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var engineDebug bool
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var stateDebug bool
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var host string
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var port uint
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flag.StringVar(&dbDir, "dbdir", ".state", "database dir to read from")
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flag.StringVar(&resourceDir, "resourcedir", path.Join("services", "registration"), "resource dir")
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flag.BoolVar(&engineDebug, "engine-debug", false, "use engine debug output")
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flag.BoolVar(&stateDebug, "state-debug", false, "use engine debug output")
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flag.UintVar(&size, "s", 160, "max size of output")
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flag.StringVar(&host, "h", "127.0.0.1", "http host")
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flag.UintVar(&port, "p", 7123, "http port")
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flag.Parse()
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logg.Infof("start command", "dbdir", dbDir, "resourcedir", resourceDir, "outputsize", size)
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ctx := context.Background()
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pfp := path.Join(scriptDir, "pp.csv")
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cfg := engine.Config{
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Root: "root",
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OutputSize: uint32(size),
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FlagCount: uint32(16),
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}
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if stateDebug {
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cfg.StateDebug = true
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}
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if engineDebug {
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cfg.EngineDebug = true
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}
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menuStorageService := storage.MenuStorageService{}
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rs, err := menuStorageService.GetResource(scriptDir, ctx)
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if err != nil {
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fmt.Fprintf(os.Stderr, err.Error())
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os.Exit(1)
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}
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err = menuStorageService.EnsureDbDir(dbDir)
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if err != nil {
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fmt.Fprintf(os.Stderr, err.Error())
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os.Exit(1)
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}
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userdataStore := menuStorageService.GetUserdataDb(dbDir, ctx)
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if err != nil {
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fmt.Fprintf(os.Stderr, err.Error())
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os.Exit(1)
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}
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defer userdataStore.Close()
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dbResource, ok := rs.(*resource.DbResource)
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if !ok {
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os.Exit(1)
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}
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lhs, err := handlers.NewLocalHandlerService(pfp, true, dbResource, cfg, rs)
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lhs.WithDataStore(&userdataStore)
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if err != nil {
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fmt.Fprintf(os.Stderr, err.Error())
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os.Exit(1)
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}
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hl, err := lhs.GetHandler()
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if err != nil {
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fmt.Fprintf(os.Stderr, err.Error())
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os.Exit(1)
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}
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stateStore, err := menuStorageService.GetStateStore(dbDir, ctx)
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if err != nil {
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fmt.Fprintf(os.Stderr, err.Error())
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os.Exit(1)
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}
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defer stateStore.Close()
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sshLoadKeys(ctx, dbDir)
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sshRun(ctx, hl)
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}
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@ -5,6 +5,10 @@ import (
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"git.defalsify.org/vise.git/persist"
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)
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const (
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DATATYPE_CUSTOM = 128
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)
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type Storage struct {
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Persister *persist.Persister
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UserdataDb db.Db
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