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short-circuit on origin header 

If the Origin header is present, we can check it and skip the other
checks.
This commit is contained in:
mutantmonkey 2015-10-12 01:23:06 -07:00
parent 0a1aa869e4
commit a3723d3665
1 changed files with 3 additions and 2 deletions
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5
csrf.go
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@ -7,8 +7,9 @@ import (
func strictReferrerCheck(r *http.Request, prefix string, whitelistHeaders []string) bool {
p := strings.TrimSuffix(prefix, "/")
if origin := r.Header.Get("Origin"); origin != "" && !strings.HasPrefix(origin, p) {
return false
if origin := r.Header.Get("Origin"); origin != "" {
// if there's an Origin header, check it and ignore the rest
return strings.HasPrefix(origin, p)
}
for _, header := range whitelistHeaders {