frp/pkg/config/parse.go

101 lines
2.5 KiB
Go

// Copyright 2021 The frp 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 config
import (
"bytes"
"fmt"
"io/ioutil"
"os"
"path/filepath"
)
func ParseClientConfig(filePath string) (
cfg ClientCommonConf,
pxyCfgs map[string]ProxyConf,
visitorCfgs map[string]VisitorConf,
err error,
) {
var content []byte
content, err = GetRenderedConfFromFile(filePath)
if err != nil {
return
}
configBuffer := bytes.NewBuffer(nil)
configBuffer.Write(content)
// Parse common section.
cfg, err = UnmarshalClientConfFromIni(content)
if err != nil {
return
}
cfg.Complete()
if err = cfg.Validate(); err != nil {
err = fmt.Errorf("Parse config error: %v", err)
return
}
// Aggregate proxy configs from include files.
var buf []byte
buf, err = getIncludeContents(cfg.IncludeConfigFiles)
if err != nil {
err = fmt.Errorf("getIncludeContents error: %v", err)
return
}
configBuffer.WriteString("\n")
configBuffer.Write(buf)
// Parse all proxy and visitor configs.
pxyCfgs, visitorCfgs, err = LoadAllProxyConfsFromIni(cfg.User, configBuffer.Bytes(), cfg.Start)
if err != nil {
return
}
return
}
// getIncludeContents renders all configs from paths.
// files format can be a single file path or directory or regex path.
func getIncludeContents(paths []string) ([]byte, error) {
out := bytes.NewBuffer(nil)
for _, path := range paths {
absDir, err := filepath.Abs(filepath.Dir(path))
if err != nil {
return nil, err
}
if _, err := os.Stat(absDir); os.IsNotExist(err) {
return nil, err
}
files, err := ioutil.ReadDir(absDir)
if err != nil {
return nil, err
}
for _, fi := range files {
if fi.IsDir() {
continue
}
absFile := filepath.Join(absDir, fi.Name())
if matched, _ := filepath.Match(filepath.Join(absDir, filepath.Base(path)), absFile); matched {
tmpContent, err := GetRenderedConfFromFile(absFile)
if err != nil {
return nil, fmt.Errorf("render extra config %s error: %v", absFile, err)
}
out.Write(tmpContent)
out.WriteString("\n")
}
}
}
return out.Bytes(), nil
}