134 lines
2.4 KiB
Go
134 lines
2.4 KiB
Go
package file
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import (
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"context"
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"net"
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"net/http"
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"sync"
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"time"
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"github.com/go-gost/core/handler"
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md "github.com/go-gost/core/metadata"
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"github.com/go-gost/x/registry"
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)
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func init() {
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registry.HandlerRegistry().Register("file", NewHandler)
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}
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type fileHandler struct {
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handler http.Handler
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server *http.Server
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ln *singleConnListener
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md metadata
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options handler.Options
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}
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func NewHandler(opts ...handler.Option) handler.Handler {
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options := handler.Options{}
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for _, opt := range opts {
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opt(&options)
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}
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return &fileHandler{
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options: options,
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}
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}
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func (h *fileHandler) Init(md md.Metadata) (err error) {
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if err = h.parseMetadata(md); err != nil {
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return
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}
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h.handler = http.FileServer(http.Dir(h.md.dir))
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h.server = &http.Server{
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Handler: http.HandlerFunc(h.handleFunc),
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}
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h.ln = &singleConnListener{
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conn: make(chan net.Conn),
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done: make(chan struct{}),
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}
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go h.server.Serve(h.ln)
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return
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}
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func (h *fileHandler) Handle(ctx context.Context, conn net.Conn, opts ...handler.HandleOption) error {
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h.options.Logger.WithFields(map[string]any{
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"remote": conn.RemoteAddr().String(),
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"local": conn.LocalAddr().String(),
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}).Infof("%s - %s", conn.RemoteAddr(), conn.LocalAddr())
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h.ln.send(conn)
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return nil
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}
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func (h *fileHandler) Close() error {
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return h.server.Close()
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}
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func (h *fileHandler) handleFunc(w http.ResponseWriter, r *http.Request) {
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if auther := h.options.Auther; auther != nil {
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u, p, _ := r.BasicAuth()
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if _, ok := auther.Authenticate(r.Context(), u, p); !ok {
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w.WriteHeader(http.StatusUnauthorized)
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return
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}
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}
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log := h.options.Logger
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start := time.Now()
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h.handler.ServeHTTP(w, r)
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log = log.WithFields(map[string]any{
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"remote": r.RemoteAddr,
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"duration": time.Since(start),
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})
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log.Infof("%s %s", r.Method, r.RequestURI)
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}
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type singleConnListener struct {
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conn chan net.Conn
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addr net.Addr
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done chan struct{}
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mu sync.Mutex
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}
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func (l *singleConnListener) Accept() (net.Conn, error) {
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select {
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case conn := <-l.conn:
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return conn, nil
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case <-l.done:
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return nil, net.ErrClosed
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}
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}
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func (l *singleConnListener) Close() error {
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l.mu.Lock()
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defer l.mu.Unlock()
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select {
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case <-l.done:
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default:
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close(l.done)
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}
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return nil
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}
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func (l *singleConnListener) Addr() net.Addr {
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return l.addr
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}
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func (l *singleConnListener) send(conn net.Conn) {
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select {
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case l.conn <- conn:
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case <-l.done:
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return
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}
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}
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