glkvm-cloud/config.go

/*
 * MIT License
 *
 * Copyright (c) 2019 Jianhui Zhao <zhaojh329@gmail.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package main

import (
	"fmt"
	"strconv"

	"github.com/kylelemons/go-gypsy/yaml"
	"github.com/urfave/cli/v3"
)

type Config struct {
	AddrDev              string
	AddrUser             string
	AddrHttpProxy        string
	HttpProxyRedirURL    string
	HttpProxyRedirDomain string
	Token                string
	DevHookUrl           string
	UserHookUrl          string
	LocalAuth            bool
	Password             string
	AllowOrigins         bool
	PprofAddr            string
	SslCert              string
	SslKey               string
	WebrtcIP             string
	WebrtcPort           string
	WebrtcUsername       string
	WebrtcPassword       string
}

// docker mode fixed path for reading certificate
const (
	SslCert = "/home/certificate/glkvm_cer"
	SslKey  = "/home/certificate/glkvm_key"
)

func (cfg *Config) Parse(c *cli.Command) error {
	conf := c.String("conf")
	if conf != "" {
		err := parseYamlCfg(cfg, conf)
		if err != nil {
			return err
		}
	}

	getFlagOpt(c, "addr-dev", &cfg.AddrDev)
	getFlagOpt(c, "addr-user", &cfg.AddrUser)
	getFlagOpt(c, "addr-http-proxy", &cfg.AddrHttpProxy)
	getFlagOpt(c, "http-proxy-redir-url", &cfg.HttpProxyRedirURL)
	getFlagOpt(c, "http-proxy-redir-domain", &cfg.HttpProxyRedirDomain)
	getFlagOpt(c, "dev-hook-url", &cfg.DevHookUrl)
	getFlagOpt(c, "user-hook-url", &cfg.UserHookUrl)
	getFlagOpt(c, "local-auth", &cfg.LocalAuth)
	getFlagOpt(c, "token", &cfg.Token)
	getFlagOpt(c, "password", &cfg.Password)
	getFlagOpt(c, "allow-origins", &cfg.AllowOrigins)
	getFlagOpt(c, "pprof", &cfg.PprofAddr)

	cfg.SslCert = SslCert
	cfg.SslKey = SslKey

	getFlagOpt(c, "webrtc-ip", &cfg.WebrtcIP)
	getFlagOpt(c, "webrtc-port", &cfg.WebrtcPort)
	getFlagOpt(c, "webrtc-username", &cfg.WebrtcUsername)
	getFlagOpt(c, "webrtc-password", &cfg.WebrtcPassword)

	return nil
}

func getConfigOpt(yamlCfg *yaml.File, name string, opt any) {
	val, err := yamlCfg.Get(name)
	if err != nil {
		return
	}

	switch opt := opt.(type) {
	case *string:
		*opt = val
	case *int:
		*opt, _ = strconv.Atoi(val)
	case *bool:
		*opt, _ = strconv.ParseBool(val)
	}
}

func parseYamlCfg(cfg *Config, conf string) error {
	yamlCfg, err := yaml.ReadFile(conf)
	if err != nil {
		return fmt.Errorf(`read config file: %s`, err.Error())
	}

	getConfigOpt(yamlCfg, "addr-dev", &cfg.AddrDev)
	getConfigOpt(yamlCfg, "addr-user", &cfg.AddrUser)
	getConfigOpt(yamlCfg, "addr-http-proxy", &cfg.AddrHttpProxy)
	getConfigOpt(yamlCfg, "http-proxy-redir-url", &cfg.HttpProxyRedirURL)
	getConfigOpt(yamlCfg, "http-proxy-redir-domain", &cfg.HttpProxyRedirDomain)

	getConfigOpt(yamlCfg, "token", &cfg.Token)
	getConfigOpt(yamlCfg, "dev-hook-url", &cfg.DevHookUrl)
	getConfigOpt(yamlCfg, "user-hook-url", &cfg.UserHookUrl)
	getConfigOpt(yamlCfg, "local-auth", &cfg.LocalAuth)
	getConfigOpt(yamlCfg, "password", &cfg.Password)
	getConfigOpt(yamlCfg, "allow-origins", &cfg.AllowOrigins)

	getConfigOpt(yamlCfg, "webrtc-ip", &cfg.WebrtcIP)
	getConfigOpt(yamlCfg, "webrtc-port", &cfg.WebrtcPort)
	getConfigOpt(yamlCfg, "webrtc-username", &cfg.WebrtcUsername)
	getConfigOpt(yamlCfg, "webrtc-password", &cfg.WebrtcPassword)
	return nil
}

func getFlagOpt(c *cli.Command, name string, opt any) {
	if !c.IsSet(name) {
		return
	}

	switch opt := opt.(type) {
	case *string:
		*opt = c.String(name)
	case *int:
		*opt = c.Int(name)
	case *bool:
		*opt = c.Bool(name)
	}
}