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Ignore case of auth scheme in request header

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Some clients send an authorization header containing the "bearer"
keyword in lower case. This led to echo responding with "missing or
malformed jwt".

Request.BasicAuth (net/http) ignores the basic auth scheme's case since
a while: https://go-review.googlesource.com/c/go/+/111516/
This commit is contained in:
Philipp Thun
2021-08-09 17:21:13 +02:00
committed by Martti T
parent fcda0e8840
commit 499097e061
2 changed files with 6 additions and 1 deletions
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2
middleware/jwt.go
View File

@ -295,7 +295,7 @@ func jwtFromHeader(header string, authScheme string) jwtExtractor {
return func(c echo.Context) (string, error) { return func(c echo.Context) (string, error) {
auth := c.Request().Header.Get(header) auth := c.Request().Header.Get(header)
l := len(authScheme) l := len(authScheme)
if len(auth) > l+1 && auth[:l] == authScheme { if len(auth) > l+1 && strings.EqualFold(auth[:l], authScheme) {
return auth[l+1:], nil return auth[l+1:], nil
} }
return "", ErrJWTMissing return "", ErrJWTMissing

5
middleware/jwt_test.go
View File

@ -261,6 +261,11 @@ func TestJWT(t *testing.T) {
expErrCode: http.StatusUnauthorized, expErrCode: http.StatusUnauthorized,
info: "Token verification does not pass using a user-defined KeyFunc", info: "Token verification does not pass using a user-defined KeyFunc",
}, },
{
hdrAuth: strings.ToLower(DefaultJWTConfig.AuthScheme) + " " + token,
config: JWTConfig{SigningKey: validKey},
info: "Valid JWT with lower case AuthScheme",
},
} { } {
if tc.reqURL == "" { if tc.reqURL == "" {
tc.reqURL = "/" tc.reqURL = "/"