/
configfile.go
181 lines (152 loc) · 4.35 KB
/
configfile.go
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package dnclient
import (
"fmt"
"net"
"os"
"path/filepath"
"runtime"
"strings"
"github.com/Go-Lift-TV/discordnotifier-client/bindata"
"github.com/Go-Lift-TV/discordnotifier-client/ui"
homedir "github.com/mitchellh/go-homedir"
"golift.io/cnfg"
"golift.io/cnfg/cnfgfile"
)
const (
msgNoConfigFile = "Using env variables only. Config file not found."
msgConfigFailed = "Using env variables only. Could not create config file: "
msgConfigCreate = "Created new config file: "
msgConfigFound = "Using Config File: "
)
func (c *Client) getConfig() (string, error) {
defer c.fixConfigs()
var f, msg string
def, cfl := configFileLocactions()
for _, f = range append([]string{c.Flags.ConfigFile}, cfl...) {
d, err := homedir.Expand(f)
if err == nil {
f = d
}
if _, err := os.Stat(f); err == nil {
break
} // else { c.Print("rip:", err) }
f = ""
}
msg = msgNoConfigFile
if f != "" {
c.Flags.ConfigFile, _ = filepath.Abs(f)
msg = msgConfigFound + c.Flags.ConfigFile
if err := cnfgfile.Unmarshal(c.Config, c.Flags.ConfigFile); err != nil {
return msg, fmt.Errorf("config file: %w", err)
}
} else if f, err := c.createConfigFile(def); err != nil {
msg = msgConfigFailed + err.Error()
} else if f != "" {
c.Flags.ConfigFile = f
msg = msgConfigCreate + c.Flags.ConfigFile
}
if _, err := cnfg.UnmarshalENV(c.Config, c.Flags.EnvPrefix); err != nil {
return msg, fmt.Errorf("environment variables: %w", err)
}
return msg, nil
}
func (c *Client) fixConfigs() {
if c.Config.Timeout.Duration == 0 {
c.Config.Timeout.Duration = DefaultTimeout
}
if c.Config.BindAddr == "" {
c.Config.BindAddr = DefaultBindAddr
} else if !strings.Contains(c.Config.BindAddr, ":") {
c.Config.BindAddr = "0.0.0.0:" + c.Config.BindAddr
}
for _, ip := range c.Config.Upstreams {
if !strings.Contains(ip, "/") {
if strings.Contains(ip, ":") {
ip += "/128"
} else {
ip += "/32"
}
}
if _, i, err := net.ParseCIDR(ip); err == nil {
c.allow = append(c.allow, i)
}
}
}
func (c *Client) createConfigFile(file string) (string, error) {
if !ui.HasGUI() {
return "", nil
}
file, err := homedir.Expand(file)
if err != nil {
return "", fmt.Errorf("expanding home: %w", err)
}
if file, err = filepath.Abs(file); err != nil {
return "", fmt.Errorf("absolute file: %w", err)
}
dir := filepath.Dir(file)
if err := os.MkdirAll(dir, 0750); err != nil {
return "", fmt.Errorf("making config dir: %w", err)
}
f, err := os.Create(file)
if err != nil {
return "", fmt.Errorf("creating config file: %w", err)
}
defer f.Close()
if a, err := bindata.Asset("../examples/dnclient.conf.example"); err != nil {
return "", fmt.Errorf("getting config file: %w", err)
} else if _, err = f.Write(a); err != nil {
return "", fmt.Errorf("writing config file: %w", err)
}
if err := cnfgfile.Unmarshal(c.Config, file); err != nil {
return file, fmt.Errorf("config file: %w", err)
}
return file, nil
}
func (c *Client) reloadConfiguration() {
//nolint: scopelint
c.RestartWebServer(func() {
c.Print("==> Reloading Configuration")
if _, err := c.getConfig(); err != nil {
_, _ = ui.Error(Title, "Reloading Configuration: "+err.Error())
c.Errorf("reloading config: %v", err)
panic(err)
}
_, _ = ui.Info(Title, "Configuration Reloaded!")
c.InitStartup()
c.Print("==> Configuration Reloaded")
})
}
func configFileLocactions() (string, []string) {
switch runtime.GOOS {
case "windows":
return `C:\ProgramData\discordnotifier-client\dnclient.conf`, []string{
`~\.dnclient\dnclient.conf`,
`C:\ProgramData\discordnotifier-client\dnclient.conf`,
`.\dnclient.conf`,
}
case "darwin":
return "~/.dnclient/dnclient.conf", []string{
"/usr/local/etc/discordnotifier-client/dnclient.conf",
"/etc/discordnotifier-client/dnclient.conf",
"~/.dnclient/dnclient.conf",
"./dnclient.conf",
}
case "freebsd", "netbsd", "openbsd":
return "", []string{
"/usr/local/etc/discordnotifier-client/dnclient.conf",
"/etc/discordnotifier-client/dnclient.conf",
"~/.dnclient/dnclient.conf",
"./dnclient.conf",
}
case "android", "dragonfly", "linux", "nacl", "plan9", "solaris":
fallthrough
default:
return "", []string{
"/etc/discordnotifier-client/dnclient.conf",
"/config/dnclient.conf",
"/usr/local/etc/discordnotifier-client/dnclient.conf",
"~/.dnclient/dnclient.conf",
"./dnclient.conf",
}
}
}