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/
config.go
134 lines (118 loc) · 3.09 KB
/
config.go
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// Copyright © 2017 Casey Marshall
//
// 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
import (
"os"
"path/filepath"
"github.com/BurntSushi/toml"
"github.com/pkg/errors"
)
type Config struct {
Node Node
Dir string
Path string
}
type Node struct {
Service Service
Remotes []Remote
Agent Agent
}
type Service struct {
Exports []Export
Clients []Client
}
type Export struct {
LocalAddr string
Port int
}
type Client struct {
Name string
Address string
Auth string
}
type Remote struct {
Name string
Address string
Auth string
Imports []Import
}
type Import struct {
LocalAddr string
LocalPort int
RemotePort int
}
type Agent struct {
TorBinaryPath string
TorrcPath string
TorDataDir string
TorServicesDir string
SocksAddr string
ControlAddr string
ControlCookie string
UseTorBrowser bool
}
func (c *Config) defaults(md *toml.MetaData) {
if c.Node.Agent.TorDataDir == "" && !md.IsDefined("Node", "Agent", "TorDataDir") {
c.Node.Agent.TorDataDir = filepath.Join(c.Dir, "tor", "data")
}
if c.Node.Agent.TorrcPath == "" && !md.IsDefined("Node", "Agent", "TorrcPath") {
c.Node.Agent.TorrcPath = filepath.Join(c.Node.Agent.TorDataDir, "torrc")
}
if c.Node.Agent.TorServicesDir == "" && !md.IsDefined("Node", "Agent", "TorServicesDir") {
c.Node.Agent.TorServicesDir = filepath.Join(c.Node.Agent.TorDataDir, "services")
}
if c.Node.Agent.SocksAddr == "" && !md.IsDefined("Node", "Agent", "SocksAddr") {
c.Node.Agent.SocksAddr = "127.0.0.1:9250"
}
if c.Node.Agent.ControlAddr == "" && !md.IsDefined("Node", "Agent", "ControlAddr") {
c.Node.Agent.ControlAddr = "127.0.0.1:9251"
}
}
func ReadFile(fpath string) (*Config, error) {
var cfg Config
md, err := toml.DecodeFile(fpath, &cfg)
if err != nil {
return nil, errors.Wrapf(err, "failed to read config %q", fpath)
}
cfg.init(fpath, &md)
return &cfg, nil
}
func NewFile(fpath string) (*Config, error) {
cfg := Config{}
cfg.init(fpath, &toml.MetaData{})
err := WriteFile(&cfg, fpath)
if err != nil {
return nil, errors.WithStack(err)
}
return &cfg, nil
}
func (c *Config) init(fpath string, md *toml.MetaData) {
c.Path = fpath
c.Dir = filepath.Dir(fpath)
c.platformDefaults()
c.defaults(&toml.MetaData{})
}
func WriteFile(config *Config, fpath string) error {
f, err := os.OpenFile(fpath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0600)
if err != nil {
return errors.Wrapf(err, "failed to open %q for writing", fpath)
}
defer f.Close()
enc := toml.NewEncoder(f)
err = enc.Encode(config)
if err != nil {
return errors.Wrapf(err, "failed to encode config")
}
return nil
}