forks/forgejo
1
0
Fork 0
Code Releases Activity

Ensure responses are context.ResponseWriters (#19843)

Browse source 
In order for web.Wrap to be able to detect if a response has been written
we need to wrap any non-context.ResponseWriters as a such. Otherwise
responses will be incorrectly detected as non-written to and handlers can
double run.

In the case of GZip this handler will change the response to a non-context.RW
and this failure to correctly detect response writing causes fallthrough and
a NPE.

Fix #19839

Signed-off-by: Andrew Thornton <art27@cantab.net>
This commit is contained in:
zeripath 2022-05-31 21:27:44 +01:00 committed by GitHub
parent 0e516949a4
commit 730b9a5a62
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
1 changed files with 6 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
modules/web/wrap_convert.go
View file

@ -21,6 +21,9 @@ func convertHandler(handler interface{}) wrappedHandlerFunc {
case http.HandlerFunc:
return func(resp http.ResponseWriter, req *http.Request, others ...wrappedHandlerFunc) (done bool, deferrable func()) {
routing.UpdateFuncInfo(req.Context(), funcInfo)
if _, ok := resp.(context.ResponseWriter); !ok {
resp = context.NewResponse(resp)
}
t(resp, req)
if r, ok := resp.(context.ResponseWriter); ok && r.Status() > 0 {
done = true
@ -92,6 +95,9 @@ func convertHandler(handler interface{}) wrappedHandlerFunc {
next = wrapInternal(others)
}
routing.UpdateFuncInfo(req.Context(), funcInfo)
if _, ok := resp.(context.ResponseWriter); !ok {
resp = context.NewResponse(resp)
}
t(next).ServeHTTP(resp, req)
if r, ok := resp.(context.ResponseWriter); ok && r.Status() > 0 {
done = true