func (tr *authTransport) RoundTrip(orig *http.Request) (*http.Response, error) {
req := transport.CloneRequest(orig)
tr.mu.Lock()
tr.modReq[orig] = req
tr.mu.Unlock()
if tr.alwaysSetBasicAuth {
req.SetBasicAuth(tr.Username, tr.Password)
return tr.RoundTripper.RoundTrip(req)
}
// Don't override
if req.Header.Get("Authorization") == "" {
if req.Header.Get("X-Docker-Token") == "true" && len(tr.Username) > 0 {
req.SetBasicAuth(tr.Username, tr.Password)
} else if len(tr.token) > 0 {
req.Header.Set("Authorization", "Token "+strings.Join(tr.token, ","))
}
}
resp, err := tr.RoundTripper.RoundTrip(req)
if err != nil {
delete(tr.modReq, orig)
return nil, err
}
if len(resp.Header["X-Docker-Token"]) > 0 {
tr.token = resp.Header["X-Docker-Token"]
}
resp.Body = &transport.OnEOFReader{
Rc: resp.Body,
Fn: func() { delete(tr.modReq, orig) },
}
return resp, nil
}
func (tr *authTransport) RoundTrip(orig *http.Request) (*http.Response, error) {
// Authorization should not be set on 302 redirect for untrusted locations.
// This logic mirrors the behavior in AddRequiredHeadersToRedirectedRequests.
// As the authorization logic is currently implemented in RoundTrip,
// a 302 redirect is detected by looking at the Referer header as go http package adds said header.
// This is safe as Docker doesn't set Referer in other scenarios.
if orig.Header.Get("Referer") != "" && !trustedLocation(orig) {
return tr.RoundTripper.RoundTrip(orig)
}
req := transport.CloneRequest(orig)
tr.mu.Lock()
tr.modReq[orig] = req
tr.mu.Unlock()
if tr.alwaysSetBasicAuth {
req.SetBasicAuth(tr.Username, tr.Password)
return tr.RoundTripper.RoundTrip(req)
}
// Don't override
if req.Header.Get("Authorization") == "" {
if req.Header.Get("X-Docker-Token") == "true" && len(tr.Username) > 0 {
req.SetBasicAuth(tr.Username, tr.Password)
} else if len(tr.token) > 0 {
req.Header.Set("Authorization", "Token "+strings.Join(tr.token, ","))
}
}
resp, err := tr.RoundTripper.RoundTrip(req)
if err != nil {
delete(tr.modReq, orig)
return nil, err
}
if len(resp.Header["X-Docker-Token"]) > 0 {
tr.token = resp.Header["X-Docker-Token"]
}
resp.Body = &transport.OnEOFReader{
Rc: resp.Body,
Fn: func() {
tr.mu.Lock()
delete(tr.modReq, orig)
tr.mu.Unlock()
},
}
return resp, nil
}