github.com/phillinzzz/newBsc@v1.1.6/p2p/dnsdisc/error.go (about)

     1  // Copyright 2018 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package dnsdisc
    18  
    19  import (
    20  	"errors"
    21  	"fmt"
    22  )
    23  
    24  // Entry parse errors.
    25  var (
    26  	errUnknownEntry = errors.New("unknown entry type")
    27  	errNoPubkey     = errors.New("missing public key")
    28  	errBadPubkey    = errors.New("invalid public key")
    29  	errInvalidENR   = errors.New("invalid node record")
    30  	errInvalidChild = errors.New("invalid child hash")
    31  	errInvalidSig   = errors.New("invalid base64 signature")
    32  	errSyntax       = errors.New("invalid syntax")
    33  )
    34  
    35  // Resolver/sync errors
    36  var (
    37  	errNoRoot        = errors.New("no valid root found")
    38  	errNoEntry       = errors.New("no valid tree entry found")
    39  	errHashMismatch  = errors.New("hash mismatch")
    40  	errENRInLinkTree = errors.New("enr entry in link tree")
    41  	errLinkInENRTree = errors.New("link entry in ENR tree")
    42  )
    43  
    44  type nameError struct {
    45  	name string
    46  	err  error
    47  }
    48  
    49  func (err nameError) Error() string {
    50  	if ee, ok := err.err.(entryError); ok {
    51  		return fmt.Sprintf("invalid %s entry at %s: %v", ee.typ, err.name, ee.err)
    52  	}
    53  	return err.name + ": " + err.err.Error()
    54  }
    55  
    56  type entryError struct {
    57  	typ string
    58  	err error
    59  }
    60  
    61  func (err entryError) Error() string {
    62  	return fmt.Sprintf("invalid %s entry: %v", err.typ, err.err)
    63  }