Ignore files with incompatible names

[rbdr/mobius] / hotline / server.go

diff --git a/hotline/server.go b/hotline/server.go
index 500087a96159b171626b23198e978181c5b2ecc1..aca2221a1adc22676c6bf676e7f7d43f05722d53 100644 (file)
--- a/hotline/server.go
+++ b/hotline/server.go
@@ -8,6 +8,7 @@ import (
        "fmt"
        "github.com/go-playground/validator/v10"
        "go.uber.org/zap"
+       "golang.org/x/text/encoding/charmap"
        "gopkg.in/yaml.v3"
        "io"
        "io/fs"
@@ -15,6 +16,7 @@ import (
        "math/rand"
        "net"
        "os"
+       "path"
        "path/filepath"
        "strings"
        "sync"
@@ -27,11 +29,16 @@ var contextKeyReq = contextKey("req")
 
 type requestCtx struct {
        remoteAddr string
-       login      string
-       name       string
 }
 
+// Converts bytes from Mac Roman encoding to UTF-8
+var txtDecoder = charmap.Macintosh.NewDecoder()
+
+// Converts bytes from UTF-8 to Mac Roman encoding
+var txtEncoder = charmap.Macintosh.NewEncoder()
+
 type Server struct {
+       NetInterface  string
        Port          int
        Accounts      map[string]*Account
        Agreement     []byte
@@ -84,15 +91,15 @@ type PrivateChat struct {
 func (s *Server) ListenAndServe(ctx context.Context, cancelRoot context.CancelFunc) error {
        s.Logger.Infow("Hotline server started",
                "version", VERSION,
-               "API port", fmt.Sprintf(":%v", s.Port),
-               "Transfer port", fmt.Sprintf(":%v", s.Port+1),
+               "API port", fmt.Sprintf("%s:%v", s.NetInterface, s.Port),
+               "Transfer port", fmt.Sprintf("%s:%v", s.NetInterface, s.Port+1),
        )
 
        var wg sync.WaitGroup
 
        wg.Add(1)
        go func() {
-               ln, err := net.Listen("tcp", fmt.Sprintf("%s:%v", "", s.Port))
+               ln, err := net.Listen("tcp", fmt.Sprintf("%s:%v", s.NetInterface, s.Port))
                if err != nil {
                        s.Logger.Fatal(err)
                }
@@ -102,7 +109,7 @@ func (s *Server) ListenAndServe(ctx context.Context, cancelRoot context.CancelFu
 
        wg.Add(1)
        go func() {
-               ln, err := net.Listen("tcp", fmt.Sprintf("%s:%v", "", s.Port+1))
+               ln, err := net.Listen("tcp", fmt.Sprintf("%s:%v", s.NetInterface, s.Port+1))
                if err != nil {
                        s.Logger.Fatal(err)
                }
@@ -208,8 +215,9 @@ const (
 )
 
 // NewServer constructs a new Server from a config dir
-func NewServer(configDir string, netPort int, logger *zap.SugaredLogger, fs FileStore) (*Server, error) {
+func NewServer(configDir, netInterface string, netPort int, logger *zap.SugaredLogger, fs FileStore) (*Server, error) {
        server := Server{
+               NetInterface:  netInterface,
                Port:          netPort,
                Accounts:      make(map[string]*Account),
                Config:        new(Config),
@@ -257,7 +265,10 @@ func NewServer(configDir string, netPort int, logger *zap.SugaredLogger, fs File
                return nil, err
        }
 
-       server.Config.FileRoot = filepath.Join(configDir, "Files")
+       // If the FileRoot is an absolute path, use it, otherwise treat as a relative path to the config dir.
+       if !filepath.IsAbs(server.Config.FileRoot) {
+               server.Config.FileRoot = filepath.Join(configDir, server.Config.FileRoot)
+       }
 
        *server.NextGuestID = 1
 
@@ -313,7 +324,7 @@ func (s *Server) keepaliveHandler() {
                                c.Idle = true
 
                                flagBitmap := big.NewInt(int64(binary.BigEndian.Uint16(c.Flags)))
-                               flagBitmap.SetBit(flagBitmap, userFlagAway, 1)
+                               flagBitmap.SetBit(flagBitmap, UserFlagAway, 1)
                                binary.BigEndian.PutUint16(c.Flags, uint16(flagBitmap.Int64()))
 
                                c.sendAll(
@@ -374,15 +385,14 @@ func (s *Server) NewClientConn(conn io.ReadWriteCloser, remoteAddr string) *Clie
                Server:     s,
                Version:    []byte{},
                AutoReply:  []byte{},
-               transfers:  map[int]map[[4]byte]*FileTransfer{},
                RemoteAddr: remoteAddr,
-       }
-       clientConn.transfers = map[int]map[[4]byte]*FileTransfer{
-               FileDownload:   {},
-               FileUpload:     {},
-               FolderDownload: {},
-               FolderUpload:   {},
-               bannerDownload: {},
+               transfers: map[int]map[[4]byte]*FileTransfer{
+                       FileDownload:   {},
+                       FileUpload:     {},
+                       FolderDownload: {},
+                       FolderUpload:   {},
+                       bannerDownload: {},
+               },
        }
 
        *s.NextGuestID++
@@ -409,9 +419,26 @@ func (s *Server) NewUser(login, name, password string, access accessBitmap) erro
        if err != nil {
                return err
        }
+
+       // Create account file, returning an error if one already exists.
+       file, err := os.OpenFile(
+               filepath.Join(s.ConfigDir, "Users", path.Join("/", login)+".yaml"),
+               os.O_CREATE|os.O_EXCL|os.O_WRONLY,
+               0644,
+       )
+       if err != nil {
+               return err
+       }
+       defer file.Close()
+
+       _, err = file.Write(out)
+       if err != nil {
+               return fmt.Errorf("error writing account file: %w", err)
+       }
+
        s.Accounts[login] = &account
 
-       return s.FS.WriteFile(filepath.Join(s.ConfigDir, "Users", login+".yaml"), out, 0666)
+       return nil
 }
 
 func (s *Server) UpdateUser(login, newLogin, name, password string, access accessBitmap) error {
@@ -420,11 +447,12 @@ func (s *Server) UpdateUser(login, newLogin, name, password string, access acces
 
        // update renames the user login
        if login != newLogin {
-               err := os.Rename(filepath.Join(s.ConfigDir, "Users", login+".yaml"), filepath.Join(s.ConfigDir, "Users", newLogin+".yaml"))
+               err := os.Rename(filepath.Join(s.ConfigDir, "Users", path.Join("/", login)+".yaml"), filepath.Join(s.ConfigDir, "Users", path.Join("/", newLogin)+".yaml"))
                if err != nil {
-                       return err
+                       return fmt.Errorf("unable to rename account: %w", err)
                }
                s.Accounts[newLogin] = s.Accounts[login]
+               s.Accounts[newLogin].Login = newLogin
                delete(s.Accounts, login)
        }
 
@@ -450,9 +478,14 @@ func (s *Server) DeleteUser(login string) error {
        s.mux.Lock()
        defer s.mux.Unlock()
 
+       err := s.FS.Remove(filepath.Join(s.ConfigDir, "Users", path.Join("/", login)+".yaml"))
+       if err != nil {
+               return err
+       }
+
        delete(s.Accounts, login)
 
-       return s.FS.Remove(filepath.Join(s.ConfigDir, "Users", login+".yaml"))
+       return nil
 }
 
 func (s *Server) connectedUsers() []Field {
@@ -512,8 +545,8 @@ func (s *Server) loadAccounts(userDir string) error {
 
                account := Account{}
                decoder := yaml.NewDecoder(fh)
-               if err := decoder.Decode(&account); err != nil {
-                       return err
+               if err = decoder.Decode(&account); err != nil {
+                       return fmt.Errorf("error loading account %s: %w", file, err)
                }
 
                s.Accounts[account.Login] = &account