92 lines
2.1 KiB
Go
92 lines
2.1 KiB
Go
package notification
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import (
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"bufio"
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"context"
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"fmt"
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"net/mail"
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"os"
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"path/filepath"
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"time"
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"github.com/authelia/authelia/v4/internal/configuration/schema"
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"github.com/authelia/authelia/v4/internal/templates"
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)
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// FileNotifier a notifier to send emails to SMTP servers.
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type FileNotifier struct {
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path string
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append bool
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}
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// NewFileNotifier create an FileNotifier writing the notification into a file.
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func NewFileNotifier(configuration schema.FileSystemNotifierConfiguration) *FileNotifier {
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return &FileNotifier{
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path: configuration.Filename,
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}
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}
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// StartupCheck implements the startup check provider interface.
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func (n *FileNotifier) StartupCheck() (err error) {
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dir := filepath.Dir(n.path)
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if _, err := os.Stat(dir); err != nil {
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if os.IsNotExist(err) {
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if err = os.MkdirAll(dir, fileNotifierMode); err != nil {
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return err
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}
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} else {
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return err
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}
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} else if _, err = os.Stat(n.path); err != nil {
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if !os.IsNotExist(err) {
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return err
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}
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}
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return os.WriteFile(n.path, []byte(""), fileNotifierMode)
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}
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// Send send a identity verification link to a user.
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func (n *FileNotifier) Send(_ context.Context, recipient mail.Address, subject string, et *templates.EmailTemplate, data any) (err error) {
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var f *os.File
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var flag int
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switch {
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case n.append:
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flag = os.O_APPEND | os.O_CREATE | os.O_WRONLY
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default:
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flag = os.O_TRUNC | os.O_CREATE | os.O_WRONLY
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}
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if f, err = os.OpenFile(n.path, flag, fileNotifierMode); err != nil {
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return fmt.Errorf("failed to open file: %w", err)
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}
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defer f.Close()
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w := bufio.NewWriter(f)
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if _, err = w.WriteString(fmt.Sprintf(fileNotifierHeader, time.Now(), recipient, subject)); err != nil {
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return fmt.Errorf("failed to write to the buffer: %w", err)
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}
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if err = et.Text.Execute(w, data); err != nil {
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return fmt.Errorf("failed to execute template: %w", err)
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}
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if _, err = w.Write(posixDoubleNewLine); err != nil {
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return fmt.Errorf("failed to write to the buffer: %w", err)
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}
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if err = w.Flush(); err != nil {
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return fmt.Errorf("failed to flush buffer: %w", err)
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}
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if err = f.Sync(); err != nil {
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return fmt.Errorf("failed to sync the file: %w", err)
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}
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return nil
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}
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