/
conf_mod_doh.go
81 lines (65 loc) · 1.5 KB
/
conf_mod_doh.go
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// Copyright (c) 2019 The BFE Authors.
//
// 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 mod_doh
import (
"fmt"
"net"
)
import (
gcfg "gopkg.in/gcfg.v1"
)
import (
"github.com/bfenetworks/bfe/bfe_basic/condition"
)
type DnsConf struct {
Address string
RetryMax int
Timeout int // In Millisecond.
}
type ConfModDoh struct {
Basic struct {
Cond string
}
Dns DnsConf
Log struct {
OpenDebug bool
}
}
func ConfLoad(filePath string, confRoot string) (*ConfModDoh, error) {
var err error
var cfg ConfModDoh
err = gcfg.ReadFileInto(&cfg, filePath)
if err != nil {
return nil, err
}
err = cfg.Check()
if err != nil {
return nil, err
}
return &cfg, nil
}
func (cfg *ConfModDoh) Check() error {
_, err := condition.Build(cfg.Basic.Cond)
if err != nil {
return err
}
if cfg.Dns.RetryMax < 0 {
return fmt.Errorf("RetryMax should >= 0.")
}
if cfg.Dns.Timeout < 1 {
return fmt.Errorf("Timeout should > 0.")
}
_, err = net.ResolveUDPAddr("udp", cfg.Dns.Address)
return err
}