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Avoid crash in PopulatePublicKey() by re-initializing the args (#8388) 

This is to avoid nil pointer dereference when method by pointer
reference and method by value reference are implemented.

Fixes #8387
This commit is contained in:
Harshavardhana 2019-10-11 15:07:08 -07:00 committed by kannappanr
parent 1c90485b56
commit f16df2a4e7
1 changed files with 11 additions and 6 deletions
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17
pkg/iam/openid/jwt.go
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@ -62,14 +62,11 @@ func (r *JWKSArgs) PopulatePublicKey() error {
return err
}
r.publicKeys = make(map[string]crypto.PublicKey)
for _, key := range jwk.Keys {
var publicKey crypto.PublicKey
publicKey, err = key.DecodePublicKey()
r.publicKeys[key.Kid], err = key.DecodePublicKey()
if err != nil {
return err
}
r.publicKeys[key.Kid] = publicKey
}
return nil
@ -215,10 +212,18 @@ func LookupConfig(args JWKSArgs, transport *http.Transport, closeRespFn func(io.
if err != nil {
return args, err
}
args.URL = u
if err := args.PopulatePublicKey(); err != nil {
args = JWKSArgs{
URL: u,
publicKeys: make(map[string]crypto.PublicKey),
transport: transport,
closeRespFn: closeRespFn,
}
if err = args.PopulatePublicKey(); err != nil {
return args, err
}
return args, nil
}