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notifications.go
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notifications.go
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package notifications
import (
"bytes"
"errors"
"html/template"
"path/filepath"
"github.com/grafana/grafana/pkg/bus"
"github.com/grafana/grafana/pkg/events"
"github.com/grafana/grafana/pkg/log"
m "github.com/grafana/grafana/pkg/models"
"github.com/grafana/grafana/pkg/setting"
"github.com/grafana/grafana/pkg/util"
)
var mailTemplates *template.Template
var tmplResetPassword = "reset_password.html"
var tmplWelcomeOnSignUp = "welcome_on_signup.html"
func Init() error {
initMailQueue()
bus.AddHandler("email", sendResetPasswordEmail)
bus.AddHandler("email", validateResetPasswordCode)
bus.AddHandler("email", sendEmailCommandHandler)
bus.AddEventListener(userSignedUpHandler)
mailTemplates = template.New("name")
mailTemplates.Funcs(template.FuncMap{
"Subject": subjectTemplateFunc,
})
templatePattern := filepath.Join(setting.StaticRootPath, setting.Smtp.TemplatesPattern)
_, err := mailTemplates.ParseGlob(templatePattern)
if err != nil {
return err
}
if !util.IsEmail(setting.Smtp.FromAddress) {
return errors.New("Invalid email address for smpt from_adress config")
}
if setting.EmailCodeValidMinutes == 0 {
setting.EmailCodeValidMinutes = 120
}
return nil
}
func subjectTemplateFunc(obj map[string]interface{}, value string) string {
obj["value"] = value
return ""
}
func sendEmailCommandHandler(cmd *m.SendEmailCommand) error {
if !setting.Smtp.Enabled {
return errors.New("Grafana mailing/smtp options not configured, contact your Grafana admin")
}
var buffer bytes.Buffer
data := cmd.Data
if data == nil {
data = make(map[string]interface{}, 10)
}
setDefaultTemplateData(data, nil)
mailTemplates.ExecuteTemplate(&buffer, cmd.Template, data)
subjectTmplText := data["Subject"].(map[string]interface{})["value"].(string)
subjectTmpl, err := template.New("subject").Parse(subjectTmplText)
if err != nil {
return err
}
var subjectBuffer bytes.Buffer
err = subjectTmpl.ExecuteTemplate(&subjectBuffer, "subject", data)
if err != nil {
return err
}
addToMailQueue(&Message{
To: cmd.To,
From: setting.Smtp.FromAddress,
Subject: subjectBuffer.String(),
Body: buffer.String(),
})
return nil
}
func sendResetPasswordEmail(cmd *m.SendResetPasswordEmailCommand) error {
return sendEmailCommandHandler(&m.SendEmailCommand{
To: []string{cmd.User.Email},
Template: tmplResetPassword,
Data: map[string]interface{}{
"Code": createUserEmailCode(cmd.User, nil),
"Name": cmd.User.NameOrFallback(),
},
})
}
func validateResetPasswordCode(query *m.ValidateResetPasswordCodeQuery) error {
login := getLoginForEmailCode(query.Code)
if login == "" {
return m.ErrInvalidEmailCode
}
userQuery := m.GetUserByLoginQuery{LoginOrEmail: login}
if err := bus.Dispatch(&userQuery); err != nil {
return err
}
if !validateUserEmailCode(userQuery.Result, query.Code) {
return m.ErrInvalidEmailCode
}
query.Result = userQuery.Result
return nil
}
func userSignedUpHandler(evt *events.UserSignedUp) error {
log.Info("User signed up: %s, send_option: %s", evt.Email, setting.Smtp.SendWelcomeEmailOnSignUp)
if evt.Email == "" || !setting.Smtp.SendWelcomeEmailOnSignUp {
return nil
}
return sendEmailCommandHandler(&m.SendEmailCommand{
To: []string{evt.Email},
Template: tmplWelcomeOnSignUp,
Data: map[string]interface{}{
"Name": evt.Login,
},
})
}