Read banner once at startup

3 files changed, 9 insertions, 81 deletions

diff --git a/hotline/server.go b/hotline/server.go
index dde469d..b5bb0d5 100644
--- a/hotline/server.go
+++ b/hotline/server.go
@@ -2,6 +2,7 @@ package hotline
 
 import (
 	"bufio"
+	"bytes"
 	"context"
 	"encoding/binary"
 	"errors"
@@ -48,6 +49,7 @@ type Server struct {
 	Config    *Config
 	ConfigDir string
 	Logger    *zap.SugaredLogger
+	banner    []byte
 
 	PrivateChatsMu sync.Mutex
 	PrivateChats   map[uint32]*PrivateChat
@@ -270,6 +272,11 @@ func NewServer(configDir, netInterface string, netPort int, logger *zap.SugaredL
 		server.Config.FileRoot = filepath.Join(configDir, server.Config.FileRoot)
 	}
 
+	server.banner, err = os.ReadFile(filepath.Join(server.ConfigDir, server.Config.BannerFile))
+	if err != nil {
+		return nil, fmt.Errorf("error opening banner: %w", err)
+	}
+
 	*server.NextGuestID = 1
 
 	if server.Config.EnableTrackerRegistration {
@@ -840,8 +847,8 @@ func (s *Server) handleFileTransfer(ctx context.Context, rwc io.ReadWriter) erro
 
 	switch fileTransfer.Type {
 	case bannerDownload:
-		if err := s.bannerDownload(rwc); err != nil {
-			return err
+		if _, err := io.Copy(rwc, bytes.NewBuffer(s.banner)); err != nil {
+			return fmt.Errorf("error sending banner: %w", err)
 		}
 	case FileDownload:
 		s.Stats.DownloadCounter += 1
diff --git a/hotline/transaction_handlers_test.go b/hotline/transaction_handlers_test.go
index ca1722f..81ba6e0 100644
--- a/hotline/transaction_handlers_test.go
+++ b/hotline/transaction_handlers_test.go
@@ -3338,72 +3338,6 @@ func TestHandleDelNewsItem(t *testing.T) {
 	}
 }
 
-func TestHandleDownloadBanner(t *testing.T) {
-	type args struct {
-		cc *ClientConn
-		t  *Transaction
-	}
-	tests := []struct {
-		name    string
-		args    args
-		wantRes []Transaction
-		wantErr assert.ErrorAssertionFunc
-	}{
-		{
-			name: "returns expected response",
-			args: args{
-				cc: &ClientConn{
-					ID: &[]byte{0, 1},
-					transfers: map[int]map[[4]byte]*FileTransfer{
-						bannerDownload: {},
-					},
-					Server: &Server{
-						ConfigDir: "/config",
-						Config: &Config{
-							BannerFile: "banner.jpg",
-						},
-						fileTransfers: map[[4]byte]*FileTransfer{},
-						FS: func() *MockFileStore {
-							mfi := &MockFileInfo{}
-							mfi.On("Size").Return(int64(100))
-
-							mfs := &MockFileStore{}
-							mfs.On("Stat", "/config/banner.jpg").Return(mfi, nil)
-							return mfs
-						}(),
-					},
-				},
-				t: NewTransaction(TranDownloadBanner, nil),
-			},
-			wantRes: []Transaction{
-				{
-					clientID:  &[]byte{0, 1},
-					Flags:     0x00,
-					IsReply:   0x01,
-					Type:      []byte{0, 0},
-					ID:        []byte{0, 0, 0, 0},
-					ErrorCode: []byte{0, 0, 0, 0},
-					Fields: []Field{
-						NewField(FieldRefNum, []byte{1, 2, 3, 4}),
-						NewField(FieldTransferSize, []byte{0, 0, 0, 0x64}),
-					},
-				},
-			},
-			wantErr: assert.NoError,
-		},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			gotRes, err := HandleDownloadBanner(tt.args.cc, tt.args.t)
-			if !tt.wantErr(t, err, fmt.Sprintf("HandleDownloadBanner(%v, %v)", tt.args.cc, tt.args.t)) {
-				return
-			}
-
-			tranAssertEqual(t, tt.wantRes, gotRes)
-		})
-	}
-}
-
 func TestHandleTranOldPostNews(t *testing.T) {
 	type args struct {
 		cc *ClientConn
diff --git a/hotline/transfer.go b/hotline/transfer.go
index 543b00c..1257f8a 100644
--- a/hotline/transfer.go
+++ b/hotline/transfer.go
@@ -5,8 +5,6 @@ import (
 	"encoding/binary"
 	"errors"
 	"io"
-	"os"
-	"path/filepath"
 )
 
 type transfer struct {
@@ -57,14 +55,3 @@ func receiveFile(r io.Reader, targetFile, resForkFile, infoFork, counterWriter i
 	}
 	return nil
 }
-
-// TODO: read the banner once on startup instead of once per banner fetch
-func (s *Server) bannerDownload(w io.Writer) error {
-	bannerBytes, err := os.ReadFile(filepath.Join(s.ConfigDir, s.Config.BannerFile))
-	if err != nil {
-		return err
-	}
-	_, err = w.Write(bannerBytes)
-
-	return err
-}