mirror of
https://github.com/gravitl/netmaker.git
synced 2024-09-21 15:56:07 +08:00
305 lines
8.5 KiB
Go
305 lines
8.5 KiB
Go
package config
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import (
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//"github.com/davecgh/go-spew/spew"
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"encoding/base64"
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"encoding/json"
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"errors"
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"fmt"
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"log"
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"os"
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"github.com/gravitl/netmaker/logger"
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"github.com/gravitl/netmaker/models"
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"github.com/gravitl/netmaker/netclient/ncutils"
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"github.com/urfave/cli/v2"
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"gopkg.in/yaml.v3"
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)
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// ClientConfig - struct for dealing with client configuration
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type ClientConfig struct {
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Server ServerConfig `yaml:"server"`
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Node models.Node `yaml:"node"`
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NetworkSettings models.Network `yaml:"networksettings"`
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Network string `yaml:"network"`
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Daemon string `yaml:"daemon"`
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OperatingSystem string `yaml:"operatingsystem"`
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DebugOn bool `yaml:"debugon"`
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}
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// ServerConfig - struct for dealing with the server information for a netclient
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type ServerConfig struct {
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CoreDNSAddr string `yaml:"corednsaddr"`
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GRPCAddress string `yaml:"grpcaddress"`
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AccessKey string `yaml:"accesskey"`
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GRPCSSL string `yaml:"grpcssl"`
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CommsNetwork string `yaml:"commsnetwork"`
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}
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// Write - writes the config of a client to disk
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func Write(config *ClientConfig, network string) error {
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if network == "" {
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err := errors.New("no network provided - exiting")
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return err
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}
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_, err := os.Stat(ncutils.GetNetclientPath() + "/config")
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if os.IsNotExist(err) {
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os.MkdirAll(ncutils.GetNetclientPath()+"/config", 0700)
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} else if err != nil {
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return err
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}
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home := ncutils.GetNetclientPathSpecific()
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file := fmt.Sprintf(home + "netconfig-" + network)
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f, err := os.OpenFile(file, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, os.ModePerm)
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if err != nil {
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return err
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}
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defer f.Close()
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err = yaml.NewEncoder(f).Encode(config)
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if err != nil {
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return err
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}
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return f.Sync()
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}
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// ConfigFileExists - return true if config file exists
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func (config *ClientConfig) ConfigFileExists() bool {
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home := ncutils.GetNetclientPathSpecific()
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file := fmt.Sprintf(home + "netconfig-" + config.Network)
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info, err := os.Stat(file)
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if os.IsNotExist(err) {
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return false
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}
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return !info.IsDir()
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}
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// ClientConfig.ReadConfig - used to read config from client disk into memory
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func (config *ClientConfig) ReadConfig() {
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nofile := false
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//home, err := homedir.Dir()
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home := ncutils.GetNetclientPathSpecific()
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file := fmt.Sprintf(home + "netconfig-" + config.Network)
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//f, err := os.Open(file)
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f, err := os.OpenFile(file, os.O_RDONLY, 0600)
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if err != nil {
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logger.Log(1, "trouble opening file: ", err.Error())
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nofile = true
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//fmt.Println("Could not access " + home + "/.netconfig, proceeding...")
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}
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defer f.Close()
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//var cfg ClientConfig
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if !nofile {
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decoder := yaml.NewDecoder(f)
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err = decoder.Decode(&config)
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if err != nil {
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fmt.Println("no config or invalid")
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fmt.Println(err)
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log.Fatal(err)
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}
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}
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}
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// ModConfig - overwrites the node inside client config on disk
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func ModConfig(node *models.Node) error {
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network := node.Network
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if network == "" {
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return errors.New("no network provided")
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}
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var modconfig ClientConfig
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if FileExists(ncutils.GetNetclientPathSpecific() + "netconfig-" + network) {
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useconfig, err := ReadConfig(network)
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if err != nil {
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return err
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}
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modconfig = *useconfig
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}
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modconfig.Node = (*node)
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modconfig.NetworkSettings = node.NetworkSettings
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return Write(&modconfig, network)
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}
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// ModConfig - overwrites the node inside client config on disk
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func SaveBackup(network string) error {
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var configPath = ncutils.GetNetclientPathSpecific() + "netconfig-" + network
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var backupPath = ncutils.GetNetclientPathSpecific() + "backup.netconfig-" + network
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if FileExists(configPath) {
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input, err := os.ReadFile(configPath)
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if err != nil {
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logger.Log(0, "failed to read ", configPath, " to make a backup")
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return err
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}
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if err = os.WriteFile(backupPath, input, 0600); err != nil {
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logger.Log(0, "failed to copy backup to ", backupPath)
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return err
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}
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}
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return nil
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}
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// ReplaceWithBackup - replaces netconfig file with backup
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func ReplaceWithBackup(network string) error {
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var backupPath = ncutils.GetNetclientPathSpecific() + "backup.netconfig-" + network
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var configPath = ncutils.GetNetclientPathSpecific() + "netconfig-" + network
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if FileExists(backupPath) {
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input, err := os.ReadFile(backupPath)
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if err != nil {
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logger.Log(0, "failed to read file ", backupPath, " to backup network: ", network)
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return err
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}
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if err = os.WriteFile(configPath, input, 0600); err != nil {
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logger.Log(0, "failed backup ", backupPath, " to ", configPath)
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return err
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}
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}
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logger.Log(0, "used backup file for network: ", network)
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return nil
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}
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// GetCLIConfig - gets the cli flags as a config
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func GetCLIConfig(c *cli.Context) (ClientConfig, string, error) {
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var cfg ClientConfig
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if c.String("token") != "" {
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tokenbytes, err := base64.StdEncoding.DecodeString(c.String("token"))
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if err != nil {
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log.Println("error decoding token")
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return cfg, "", err
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}
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var accesstoken models.AccessToken
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if err := json.Unmarshal(tokenbytes, &accesstoken); err != nil {
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log.Println("error converting token json to object", tokenbytes)
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return cfg, "", err
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}
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if accesstoken.ServerConfig.GRPCConnString != "" {
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cfg.Server.GRPCAddress = accesstoken.ServerConfig.GRPCConnString
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}
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cfg.Network = accesstoken.ClientConfig.Network
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cfg.Node.Network = accesstoken.ClientConfig.Network
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cfg.Server.AccessKey = accesstoken.ClientConfig.Key
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cfg.Node.LocalRange = accesstoken.ClientConfig.LocalRange
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cfg.Server.GRPCSSL = accesstoken.ServerConfig.GRPCSSL
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cfg.Server.CommsNetwork = accesstoken.ServerConfig.CommsNetwork
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if c.String("grpcserver") != "" {
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cfg.Server.GRPCAddress = c.String("grpcserver")
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}
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if c.String("key") != "" {
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cfg.Server.AccessKey = c.String("key")
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}
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if c.String("network") != "all" {
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cfg.Network = c.String("network")
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cfg.Node.Network = c.String("network")
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}
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if c.String("localrange") != "" {
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cfg.Node.LocalRange = c.String("localrange")
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}
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if c.String("grpcssl") != "" {
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cfg.Server.GRPCSSL = c.String("grpcssl")
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}
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if c.String("corednsaddr") != "" {
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cfg.Server.CoreDNSAddr = c.String("corednsaddr")
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}
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} else {
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cfg.Server.GRPCAddress = c.String("grpcserver")
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cfg.Server.AccessKey = c.String("key")
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cfg.Network = c.String("network")
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cfg.Node.Network = c.String("network")
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cfg.Node.LocalRange = c.String("localrange")
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cfg.Server.GRPCSSL = c.String("grpcssl")
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cfg.Server.CoreDNSAddr = c.String("corednsaddr")
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}
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cfg.Node.Name = c.String("name")
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cfg.Node.Interface = c.String("interface")
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cfg.Node.Password = c.String("password")
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cfg.Node.MacAddress = c.String("macaddress")
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cfg.Node.LocalAddress = c.String("localaddress")
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cfg.Node.Address = c.String("address")
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cfg.Node.Address6 = c.String("addressIPV6")
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//cfg.Node.Roaming = c.String("roaming")
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cfg.Node.DNSOn = c.String("dnson")
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cfg.Node.IsLocal = c.String("islocal")
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cfg.Node.IsStatic = c.String("isstatic")
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cfg.Node.IsDualStack = c.String("isdualstack")
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cfg.Node.PostUp = c.String("postup")
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cfg.Node.PostDown = c.String("postdown")
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cfg.Node.ListenPort = int32(c.Int("port"))
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cfg.Node.PersistentKeepalive = int32(c.Int("keepalive"))
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cfg.Node.PublicKey = c.String("publickey")
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privateKey := c.String("privatekey")
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cfg.Node.Endpoint = c.String("endpoint")
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cfg.Node.IPForwarding = c.String("ipforwarding")
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cfg.OperatingSystem = c.String("operatingsystem")
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cfg.Daemon = c.String("daemon")
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cfg.Node.UDPHolePunch = c.String("udpholepunch")
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cfg.Node.MTU = int32(c.Int("mtu"))
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return cfg, privateKey, nil
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}
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// ReadConfig - reads a config of a client from disk for specified network
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func ReadConfig(network string) (*ClientConfig, error) {
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if network == "" {
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err := errors.New("no network provided - exiting")
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return nil, err
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}
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nofile := false
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home := ncutils.GetNetclientPathSpecific()
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file := fmt.Sprintf(home + "netconfig-" + network)
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f, err := os.Open(file)
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if err != nil {
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if err = ReplaceWithBackup(network); err != nil {
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nofile = true
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}
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f, err = os.Open(file)
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if err != nil {
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nofile = true
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}
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}
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defer f.Close()
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var cfg ClientConfig
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if !nofile {
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decoder := yaml.NewDecoder(f)
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err = decoder.Decode(&cfg)
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if err != nil {
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fmt.Println("trouble decoding file")
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return nil, err
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}
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}
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return &cfg, err
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}
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// FileExists - checks if a file exists on disk
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func FileExists(f string) bool {
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info, err := os.Stat(f)
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if os.IsNotExist(err) {
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return false
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}
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return !info.IsDir()
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}
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// GetNode - parses a network specified client config for node data
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func GetNode(network string) models.Node {
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modcfg, err := ReadConfig(network)
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if err != nil {
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log.Fatalf("Error: %v", err)
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}
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var node models.Node
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node.Fill(&modcfg.Node)
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return node
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}
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