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GeezerVison is showing github.com — simplehttpserver/pkg/httpserver/pythonliststyle.go at main · projectdiscovery/simplehttpserver

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pythonliststyle.go

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pythonliststyle.go

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package httpserver
import (
"bytes"
"fmt"
"io"
"net/http"
"os"
"path/filepath"
)
const (
preTag = "<pre>"
preTagClose = "</pre>"
aTag = "<a"
htmlHeader = `<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Directory listing for %s</title>
</head>
<body>
`
htmlFooter = `<hr>
</body>
</html>
`
)
type pythonStyleHandler struct {
origWriter http.ResponseWriter
root http.Dir
}
func (h *pythonStyleHandler) Header() http.Header {
return h.origWriter.Header()
}
func (h *pythonStyleHandler) writeListItem(b []byte, written *int) {
var i int
i, _ = fmt.Fprint(h.origWriter, "<li>")
*written += i
i, _ = h.origWriter.Write(bytes.Trim(b, "\r\n"))
*written += i
i, _ = fmt.Fprint(h.origWriter, "</li>\n")
*written += i
}
func (h *pythonStyleHandler) Write(b []byte) (int, error) {
var i int
written := 0
if bytes.HasPrefix(b, []byte(preTag)) {
_, _ = io.Discard.Write(b)
i, _ = fmt.Fprintln(h.origWriter, "<ul>")
written += i
return written, nil
}
if bytes.HasPrefix(b, []byte(preTagClose)) {
_, _ = io.Discard.Write(b)
i, _ = fmt.Fprintln(h.origWriter, "</ul>")
written += i
return written, nil
}
if bytes.HasPrefix(b, []byte(aTag)) {
h.writeListItem(b, &written)
}
return i, nil
}
func (h *pythonStyleHandler) WriteHeader(statusCode int) {
h.origWriter.WriteHeader(statusCode)
}
func (h *pythonStyleHandler) ServeHTTP(writer http.ResponseWriter, request *http.Request) {
target := filepath.Join(string(h.root), filepath.Clean(request.URL.Path))
file, err := os.Stat(target)
if err != nil || !file.IsDir() {
http.ServeFile(writer, request, target)
return
} else {
_, _ = fmt.Fprintf(writer, htmlHeader, request.URL.Path)
_, _ = fmt.Fprintf(writer, "<h1>Directory listing for %s</h1>\n<hr>\n", request.URL.Path)
h.origWriter = writer
http.ServeFile(h, request, target)
_, _ = fmt.Fprint(writer, htmlFooter)
}
}
func PythonStyle(root http.Dir) http.Handler {
return &pythonStyleHandler{
root: root,
}
}
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