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config.go
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/
config.go
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// Copyright 2017 ETH Zurich
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package config is responsible for parsing the SIG json config file into a
// set of simple intermediate data-structures.
package config
import (
"encoding/json"
"io/ioutil"
"github.com/scionproto/scion/go/lib/addr"
"github.com/scionproto/scion/go/lib/common"
)
// Cfg is a direct Go representation of the JSON file format.
type Cfg struct {
ASes map[addr.IA]*ASEntry
ConfigVersion uint64
}
// Load a JSON config file from path and parse it into a Cfg struct.
func LoadFromFile(path string) (*Cfg, error) {
b, err := ioutil.ReadFile(path)
if err != nil {
return nil, common.NewBasicError("Unable to open SIG config", err)
}
cfg := &Cfg{}
if err := json.Unmarshal(b, cfg); err != nil {
return nil, common.NewBasicError("Unable to parse SIG config", err)
}
return cfg, nil
}
type ASEntry struct {
Nets []*IPNet
}