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GetUser check required for jwt auth in files mode #339

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GetUser check required for jwt auth in files mode #339

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48a3a57
Check user
december1981 Sep 26, 2024
25da2d6
tests for jwt files mode user auth
december1981 Sep 30, 2024
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5 changes: 3 additions & 2 deletions backends/jwt_files.go
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Original file line number Diff line number Diff line change
Expand Up @@ -17,7 +17,7 @@ func NewFilesJWTChecker(authOpts map[string]string, logLevel log.Level, hasher h

/* We could ask for a file listing available users with no password, but that gives very little value
versus just assuming users in the ACL file are valid ones, while general rules apply to any user.
Thus, padswords file makes no sense for JWT, we only need to check ACLs.
Thus, passwords file makes no sense for JWT, we only need to check ACLs.
*/
aclPath, ok := authOpts["jwt_acl_path"]
if !ok || aclPath == "" {
Expand All @@ -36,7 +36,8 @@ func NewFilesJWTChecker(authOpts map[string]string, logLevel log.Level, hasher h
}

func (o *filesJWTChecker) GetUser(token string) (bool, error) {
return false, nil
_, err := getUsernameForToken(o.options, token, o.options.skipUserExpiration)
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If there's an actual error maybe we should return it?

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@december1981 december1981 Sep 28, 2024 •
edited
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I tried that somewhat naively - but discovered if this propagates an error by returning it, it causes a general failure in the plugin and unresponsive behaviour. As far as I can tell, getUsernameForToken returning an error just means an invalid user, for whatever reason, not a general/unexpected failure, so returning err == nil, nil seemed to be the most fitting return format.

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Oh, ok, I'll take a deeper look into then, thanks.

return err == nil, nil
}

func (o *filesJWTChecker) GetSuperuser(token string) (bool, error) {
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53 changes: 53 additions & 0 deletions backends/jwt_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -218,6 +218,59 @@ func TestFilesJWTChecker(t *testing.T) {
token, err := notPresentJwtToken.SignedString([]byte(jwtSecret))
So(err, ShouldBeNil)

invalidToken, err := notPresentJwtToken.SignedString([]byte("badsecret"))
So(err, ShouldBeNil)

expiredToken, err := expiredToken.SignedString([]byte(jwtSecret))
So(err, ShouldBeNil)

Convey("Given a valid token, it should correctly authenticate it", func() {
authenticated, err := filesChecker.GetUser(token)

So(err, ShouldBeNil)
So(authenticated, ShouldBeTrue)
})

Convey("Given an invalid token, it should not authenticate it", func() {
authenticated, err := filesChecker.GetUser(invalidToken)

So(err, ShouldBeNil)
So(authenticated, ShouldBeFalse)
})

Convey("Given an expired token, it should not authenticate it", func() {
authenticated, err := filesChecker.GetUser(expiredToken)

So(err, ShouldBeNil)
So(authenticated, ShouldBeFalse)
})

Convey("Given an expired token with skip user expiration, it should anyway authenticate it", func() {
skipExpirationOptions := tkOptions
skipExpirationOptions.skipUserExpiration = true
filesChecker, err := NewFilesJWTChecker(authOpts, logLevel, hasher, skipExpirationOptions)
So(err, ShouldBeNil)

authenticated, err := filesChecker.GetUser(expiredToken)

So(err, ShouldBeNil)
So(authenticated, ShouldBeTrue)
})

Convey("Given a plain non-token format valid username, it should not authenticate it", func() {
authenticated, err := filesChecker.GetUser(username)

So(err, ShouldBeNil)
So(authenticated, ShouldBeFalse)
})

Convey("Given a plain non-token format random username, it should not authenticate it", func() {
authenticated, err := filesChecker.GetUser("somerandomuser")

So(err, ShouldBeNil)
So(authenticated, ShouldBeFalse)
})

Convey("Access should be granted for ACL mentioned users", func() {
tt, err := filesChecker.CheckAcl(token, "test/not_present", "id", 1)

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