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Use MaxBytesReader in whip.

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This commit is contained in:
Juliusz Chroboczek 2023-12-09 15:51:35 +01:00
parent a283692584
commit 1f3b349ea2
2 changed files with 12 additions and 15 deletions
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10
webserver/webserver.go
View file

@ -133,11 +133,17 @@ func httpError(w http.ResponseWriter, err error) {
return
}
if os.IsPermission(err) {
http.Error(w, "403 forbidden", http.StatusForbidden)
http.Error(w, "Forbidden", http.StatusForbidden)
return
}
var mberr *http.MaxBytesError
if errors.As(err, &mberr) {
http.Error(w, "Request body too large",
http.StatusRequestEntityTooLarge)
return
}
log.Printf("HTTP server error: %v", err)
http.Error(w, "500 Internal Server Error",
http.Error(w, "Internal server error",
http.StatusInternalServerError)
}

17
webserver/whip.go
View file

@ -4,7 +4,6 @@ import (
"bytes"
crand "crypto/rand"
"encoding/base64"
"errors"
"fmt"
"io"
"log"
@ -44,16 +43,6 @@ func newId() string {
return base64.RawURLEncoding.EncodeToString(b)
}
const sdpLimit = 1024 * 1024
func readLimited(r io.Reader) ([]byte, error) {
v, err := io.ReadAll(io.LimitReader(r, sdpLimit))
if len(v) == sdpLimit {
err = errors.New("SDP too large")
}
return v, err
}
func canPresent(perms []string) bool {
for _, p := range perms {
if p == "present" {
@ -119,6 +108,8 @@ func whipICEServers(w http.ResponseWriter) {
}
}
const sdpLimit = 1024 * 1024
func whipEndpointHandler(w http.ResponseWriter, r *http.Request) {
if redirect(w, r) {
return
@ -181,7 +172,7 @@ func whipEndpointHandler(w http.ResponseWriter, r *http.Request) {
return
}
body, err := readLimited(r.Body)
body, err := io.ReadAll(http.MaxBytesReader(w, r.Body, sdpLimit))
if err != nil {
httpError(w, err)
return
@ -311,7 +302,7 @@ func whipResourceHandler(w http.ResponseWriter, r *http.Request) {
return
}
body, err := readLimited(r.Body)
body, err := io.ReadAll(http.MaxBytesReader(w, r.Body, sdpLimit))
if err != nil {
httpError(w, err)
return