feat(dnssec): query the authoritative servers directly

common/dnssec/errors.go

@@ -0,0 +1,35 @@
+package dnssec
+
+// CODE ADAPTED FROM THIS
+
+// ISC License
+//
+// Copyright (c) 2012-2016 Peter Banik <peter@froggle.org>
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+import "errors"
+
+var (
+	ErrResourceNotSigned    = errors.New("resource is not signed with RRSIG")
+	ErrNoResult             = errors.New("requested RR not found")
+	ErrDnskeyNotAvailable   = errors.New("DNSKEY RR does not exist")
+	ErrDsNotAvailable       = errors.New("DS RR does not exist")
+	ErrInvalidRRsig         = errors.New("invalid RRSIG")
+	ErrForgedRRsig          = errors.New("forged RRSIG header")
+	ErrRrsigValidationError = errors.New("RR doesn't validate against RRSIG")
+	ErrRrsigValidityPeriod  = errors.New("invalid RRSIG validity period")
+	ErrUnknownDsDigestType  = errors.New("unknown DS digest type")
+	ErrDsInvalid            = errors.New("DS RR does not match DNSKEY")
+	ErrInvalidQuery         = errors.New("invalid query input")
+)