mirror of https://github.com/poanetwork/quorum.git
55 lines
1.6 KiB
Go
55 lines
1.6 KiB
Go
// Copyright 2019 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package les
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import (
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"errors"
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"github.com/ethereum/go-ethereum/log"
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"github.com/ethereum/go-ethereum/p2p/enode"
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)
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type ulc struct {
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keys map[string]bool
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fraction int
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}
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// newULC creates and returns an ultra light client instance.
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func newULC(servers []string, fraction int) (*ulc, error) {
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keys := make(map[string]bool)
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for _, id := range servers {
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node, err := enode.Parse(enode.ValidSchemes, id)
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if err != nil {
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log.Warn("Failed to parse trusted server", "id", id, "err", err)
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continue
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}
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keys[node.ID().String()] = true
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}
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if len(keys) == 0 {
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return nil, errors.New("no trusted servers")
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}
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return &ulc{
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keys: keys,
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fraction: fraction,
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}, nil
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}
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// trusted return an indicator that whether the specified peer is trusted.
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func (u *ulc) trusted(p enode.ID) bool {
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return u.keys[p.String()]
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}
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