73479bab26
- OS custom internal package for file system interaction - Remove fileManager external dependency - Closer API to Go's native API on the OS - Create directories at startup - Better testability - Move Unsetenv to os interface
69 lines
1.4 KiB
Go
69 lines
1.4 KiB
Go
package openvpn
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import (
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"io/ioutil"
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"os"
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"strings"
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"github.com/qdm12/gluetun/internal/constants"
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)
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// WriteAuthFile writes the OpenVPN auth file to disk with the right permissions.
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func (c *configurator) WriteAuthFile(user, password string, uid, gid int) error {
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const filepath = string(constants.OpenVPNAuthConf)
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file, err := c.os.OpenFile(filepath, os.O_RDONLY, 0)
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if err != nil && !os.IsNotExist(err) {
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return err
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}
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if os.IsNotExist(err) {
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file, err = c.os.OpenFile(filepath, os.O_WRONLY|os.O_CREATE, 0400)
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if err != nil {
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return err
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}
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_, err = file.WriteString(user + "\n" + password)
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if err != nil {
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_ = file.Close()
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return err
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}
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err = file.Chown(uid, gid)
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if err != nil {
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_ = file.Close()
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return err
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}
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return file.Close()
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}
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data, err := ioutil.ReadAll(file)
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if err != nil {
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_ = file.Close()
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return err
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}
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if err := file.Close(); err != nil {
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return err
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}
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lines := strings.Split(string(data), "\n")
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if len(lines) > 1 && lines[0] == user && lines[1] == password {
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return nil
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}
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c.logger.Info("username and password changed in %s", constants.OpenVPNAuthConf)
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file, err = c.os.OpenFile(filepath, os.O_TRUNC|os.O_WRONLY, 0400)
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if err != nil {
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return err
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}
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_, err = file.WriteString(user + "\n" + password)
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if err != nil {
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_ = file.Close()
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return err
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}
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err = file.Chown(uid, gid)
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if err != nil {
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_ = file.Close()
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return err
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}
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return file.Close()
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}
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