open-vault/vault/capabilities.go

63 lines
1.2 KiB
Go

package vault
// Struct to identify user input errors.
// This is helpful in responding the appropriate status codes to clients
// from the HTTP endpoints.
type ErrUserInput struct {
Message string
}
// Implementing error interface
func (e *ErrUserInput) Error() string {
return e.Message
}
// Capabilities is used to fetch the capabilities of the given token on the given path
func (c *Core) Capabilities(token, path string) ([]string, error) {
if path == "" {
return nil, &ErrUserInput{
Message: "missing path",
}
}
if token == "" {
return nil, &ErrUserInput{
Message: "missing token",
}
}
te, err := c.tokenStore.Lookup(token)
if err != nil {
return nil, err
}
if te == nil {
return nil, &ErrUserInput{
Message: "invalid token",
}
}
if te.Policies == nil {
return []string{DenyCapability}, nil
}
var policies []*Policy
for _, tePolicy := range te.Policies {
policy, err := c.policyStore.GetPolicy(tePolicy)
if err != nil {
return nil, err
}
policies = append(policies, policy)
}
if len(policies) == 0 {
return []string{DenyCapability}, nil
}
acl, err := NewACL(policies)
if err != nil {
return nil, err
}
return acl.Capabilities(path), nil
}