1. The problem I’m having:
I want to deny download access, but not work.
2. Error messages and/or full log output:
myplugin code
type responseWriterWrapper struct {
*caddyhttp.ResponseWriterWrapper
wroteHeader bool
match bool
}
func (rww *responseWriterWrapper) WriteHeader(status int) {
if rww.wroteHeader {
return
}
rww.wroteHeader = true
ct := rww.Header().Get("Content-Type")
cd := rww.Header().Get("Content-Disposition")
if strings.Contains(ct, "octet-stream") || cd != "" { // download header match
rww.match = true
rww.Header().Set("Content-Type", "text/html; charset=utf-8")
rww.Header().Del("Content-Disposition")
rww.Header().Del("Content-Length")
rww.ResponseWriterWrapper.WriteHeader(http.StatusForbidden)
return
}
rww.ResponseWriterWrapper.WriteHeader(status)
}
func (rww *responseWriterWrapper) Write(d []byte) (int, error) {
if !rww.wroteHeader {
rww.WriteHeader(http.StatusOK)
}
if rww.match { // if download discard data
return len(d), nil
}
return rww.ResponseWriterWrapper.Write(d)
}
func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request, next caddyhttp.Handler) error {
ww := &responseWriterWrapper{
ResponseWriterWrapper: &caddyhttp.ResponseWriterWrapper{ResponseWriter: w},
}
err := next.ServeHTTP(ww, r)
// It's not work
w.Header().Set("abc", "abc")
_, _ = w.Write([]byte("deny download"))
return err
}
I set response header (w.Header().Set("abc", "abc")) and rewrite response (w.Write([]byte("deny download"))). When I curl，didn’t get the desired result
3. Caddy version:
2.6.0
4. How I installed and ran Caddy:
a. System environment:
b. Command:
PASTE OVER THIS, BETWEEN THE ``` LINES.
Please use the preview pane to ensure it looks nice.
c. Service/unit/compose file:
d. My complete Caddy config:
{
debug
order myplugin after encode
auto_https off
}
a.com:443 {
myplugin
tls a.crt a.key
reverse_proxy https://11.3.4.1 {
trusted_proxies private_ranges
transport http {
tls
tls_insecure_skip_verify
}
}
}