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feat: smtp mail provider implementation

This commit is contained in:
Ferdinand Mütsch 2021-04-10 00:07:13 +02:00
parent ddc29f0414
commit 4706809170
15 changed files with 332 additions and 66 deletions
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4
README.md
View File

@ -180,6 +180,10 @@ You can specify configuration options either via a config file (default: `config
| `db.charset` | `WAKAPI_DB_CHARSET` | `utf8mb4` | Database connection charset (for MySQL only) |
| `db.max_conn` | `WAKAPI_DB_MAX_CONNECTIONS` | `2` | Maximum number of database connections |
| `db.ssl` | `WAKAPI_DB_SSL` | `false` | Whether to use TLS encryption for database connection (Postgres and CockroachDB only) |
| `mail.enabled` | `WAKAPI_MAIL_ENABLED` | `true` | Whether to allow Wakapi to send e-mail (e.g. for password resets) |
| `mail.provider` | `WAKAPI_MAIL_PROVIDER` | `smtp` | Implementation to use for sending mails (one of [`smtp`, `mailwhale`]) |
| `mail.smtp.*` | `WAKAPI_MAIL_SMTP_*` | `-` | Various options to configure SMTP. See [default config](config.default.yaml) for details |
| `mail.mailwhale.*` | `WAKAPI_MAIL_MAILWHALE_*` | `-` | Various options to configure [MailWhale](https://mailwhale.dev) sending service. See [default config](config.default.yaml) for details |
| `sentry.dsn` | `WAKAPI_SENTRY_DSN` | – | DSN for to integrate [Sentry](https://sentry.io) for error logging and tracing (leave empty to disable) |
| `sentry.enable_tracing` | `WAKAPI_SENTRY_TRACING` | `false` | Whether to enable Sentry request tracing |
| `sentry.sample_rate` | `WAKAPI_SENTRY_SAMPLE_RATE` | `0.75` | Probability of tracing a request in Sentry |

17
config.default.yml
View File

@ -39,4 +39,19 @@ sentry:
dsn: # leave blank to disable sentry integration
enable_tracing: true # whether to use performance monitoring
sample_rate: 0.75 # probability of tracing a request
sample_rate_heartbeats: 0.1 # probability of tracing a heartbeat request
sample_rate_heartbeats: 0.1 # probability of tracing a heartbeat request
mail:
enabled: true # whether to enable mails (used for password resets, reports, etc.)
provider: smtp # method for sending mails, currently one of ['smtp', 'mailwhale']
smtp: # smtp settings when sending mails via smtp
host:
port:
username:
password:
tls:
sender: Wakapi <noreply@wakapi.dev>
mailwhale: # mailwhale.dev settings when using mailwhale as sending service
url:
client_id:
client_secret:

21
config/config.go
View File

@ -50,10 +50,12 @@ const (
)
const (
MailProviderSmtp = "smtp"
MailProviderMailWhale = "mailwhale"
)
var emailProviders = []string{
MailProviderSmtp,
MailProviderMailWhale,
}
@ -97,7 +99,7 @@ type serverConfig struct {
ListenIpV4 string `yaml:"listen_ipv4" default:"127.0.0.1" env:"WAKAPI_LISTEN_IPV4"`
ListenIpV6 string `yaml:"listen_ipv6" default:"::1" env:"WAKAPI_LISTEN_IPV6"`
BasePath string `yaml:"base_path" default:"/" env:"WAKAPI_BASE_PATH"`
PublicUrl string `yaml:"public_url" default:"https://wakapi.dev/" env:"WAKAPI_PUBLIC_URL"`
PublicUrl string `yaml:"public_url" default:"http://localhost:3000" env:"WAKAPI_PUBLIC_URL"`
TlsCertPath string `yaml:"tls_cert_path" default:"" env:"WAKAPI_TLS_CERT_PATH"`
TlsKeyPath string `yaml:"tls_key_path" default:"" env:"WAKAPI_TLS_KEY_PATH"`
}
@ -110,8 +112,10 @@ type sentryConfig struct {
}
type mailConfig struct {
Provider string `env:"WAKAPI_MAIL_PROVIDER"`
Enabled bool `env:"WAKAPI_MAIL_ENABLED" default:"true"`
Provider string `env:"WAKAPI_MAIL_PROVIDER" default:"smtp"`
MailWhale *MailwhaleMailConfig `yaml:"mailwhale"`
Smtp *SMTPMailConfig `yaml:"smtp"`
}
type MailwhaleMailConfig struct {
@ -120,6 +124,15 @@ type MailwhaleMailConfig struct {
ClientSecret string `yaml:"client_secret" env:"WAKAPI_MAIL_MAILWHALE_CLIENT_SECRET"`
}
type SMTPMailConfig struct {
Host string `env:"WAKAPI_MAIL_SMTP_HOST"`
Port uint `env:"WAKAPI_MAIL_SMTP_PORT"`
Username string `env:"WAKAPI_MAIL_SMTP_USER"`
Password string `env:"WAKAPI_MAIL_SMTP_PASS"`
TLS bool `env:"WAKAPI_MAIL_SMTP_TLS"`
Sender string `env:"WAKAPI_MAIL_SMTP_SENDER"`
}
type Config struct {
Env string `default:"dev" env:"ENVIRONMENT"`
Version string `yaml:"-"`
@ -263,6 +276,10 @@ func (c *serverConfig) GetPublicUrl() string {
return strings.TrimSuffix(c.PublicUrl, "/")
}
func (c *SMTPMailConfig) ConnStr() string {
return fmt.Sprintf("%s:%d", c.Host, c.Port)
}
func IsDev(env string) bool {
return env == "dev" || env == "development"
}

2
go.mod
View File

@ -4,6 +4,8 @@ go 1.13
require (
github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751
github.com/emersion/go-sasl v0.0.0-20200509203442-7bfe0ed36a21
github.com/emersion/go-smtp v0.15.0
github.com/emvi/logbuch v1.1.1
github.com/getsentry/sentry-go v0.10.0
github.com/go-co-op/gocron v0.3.3

7
go.sum
View File

@ -77,6 +77,10 @@ github.com/eapache/go-xerial-snappy v0.0.0-20180814174437-776d5712da21/go.mod h1
github.com/eapache/queue v1.1.0/go.mod h1:6eCeP0CKFpHLu8blIFXhExK/dRa7WDZfr6jVFPTqq+I=
github.com/edsrzf/mmap-go v1.0.0/go.mod h1:YO35OhQPt3KJa3ryjFM5Bs14WD66h8eGKpfaBNrHW5M=
github.com/eknkc/amber v0.0.0-20171010120322-cdade1c07385/go.mod h1:0vRUJqYpeSZifjYj7uP3BG/gKcuzL9xWVV/Y+cK33KM=
github.com/emersion/go-sasl v0.0.0-20200509203442-7bfe0ed36a21 h1:OJyUGMJTzHTd1XQp98QTaHernxMYzRaOasRir9hUlFQ=
github.com/emersion/go-sasl v0.0.0-20200509203442-7bfe0ed36a21/go.mod h1:iL2twTeMvZnrg54ZoPDNfJaJaqy0xIQFuBdrLsmspwQ=
github.com/emersion/go-smtp v0.15.0 h1:3+hMGMGrqP/lqd7qoxZc1hTU8LY8gHV9RFGWlqSDmP8=
github.com/emersion/go-smtp v0.15.0/go.mod h1:qm27SGYgoIPRot6ubfQ/GpiPy/g3PaZAVRxiO/sDUgQ=
github.com/emvi/logbuch v1.1.1 h1:poBGNbHy/nB95oNoqLKAaJoBrcKxTO0W9DhMijKEkkU=
github.com/emvi/logbuch v1.1.1/go.mod h1:J2Wgbr3BuSc1JO+D2MBVh6q3WPVSK5GzktwWz8pvkKw=
github.com/envoyproxy/go-control-plane v0.6.9/go.mod h1:SBwIajubJHhxtWwsL9s8ss4safvEdbitLhGGK48rN6g=
@ -99,6 +103,7 @@ github.com/gin-gonic/gin v1.4.0/go.mod h1:OW2EZn3DO8Ln9oIKOvM++LBO+5UPHJJDH72/q/
github.com/go-check/check v0.0.0-20180628173108-788fd7840127/go.mod h1:9ES+weclKsC9YodN5RgxqK/VD9HM9JsCSh7rNhMZE98=
github.com/go-co-op/gocron v0.3.3 h1:QnarcMZWWKrEP25uCbtDiLsnnGw+PhCjL3wNITdWJOs=
github.com/go-co-op/gocron v0.3.3/go.mod h1:Y9PWlYqDChf2Nbgg7kfS+ZsXHDTZbMZYPEQ0MILqH+M=
github.com/go-errors/errors v1.0.1 h1:LUHzmkK3GUKUrL/1gfBUxAHzcev3apQlezX/+O7ma6w=
github.com/go-errors/errors v1.0.1/go.mod h1:f4zRHt4oKfwPJE5k8C9vpYG+aDHdBFUsgrm6/TyX73Q=
github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
github.com/go-kit/kit v0.9.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
@ -166,6 +171,7 @@ github.com/google/btree v1.0.0/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ
github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
github.com/google/go-cmp v0.4.0 h1:xsAVV57WRhGj6kEIi8ReJzQlHHqcBYCElAvkovg3B/4=
github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
github.com/google/go-querystring v1.0.0/go.mod h1:odCYkC5MyYFN7vkCjXpyrEuKhc/BUO6wN/zVPAxq5ck=
github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
@ -408,6 +414,7 @@ github.com/pelletier/go-toml v1.2.0/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/9
github.com/performancecopilot/speed v3.0.0+incompatible/go.mod h1:/CLtqpZ5gBg1M9iaPbIdPPGyKcA8hKdoy6hAWba7Yac=
github.com/pierrec/lz4 v1.0.2-0.20190131084431-473cd7ce01a1/go.mod h1:3/3N9NVKO0jef7pBehbT1qWhCMrIgbYNnFAZCqQ5LRc=
github.com/pierrec/lz4 v2.0.5+incompatible/go.mod h1:pdkljMzZIN41W+lC3N2tnIh5sFi+IEE17M5jbnwPHcY=
github.com/pingcap/errors v0.11.4 h1:lFuQV/oaUMGcD2tqt+01ROSmJs75VG1ToEOkZIZ4nE4=
github.com/pingcap/errors v0.11.4/go.mod h1:Oi8TUi2kEtXXLMJk9l1cGmz20kV3TaQ0usTwv5KuLY8=
github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=

45
models/mail.go Normal file
View File

@ -0,0 +1,45 @@
package models
import (
"fmt"
"strings"
)
type Mail struct {
From MailAddress
To MailAddresses
Subject string
Body string
Type string
}
func (m *Mail) WithText(text string) *Mail {
m.Body = text
m.Type = "text/plain; charset=UTF-8"
return m
}
func (m *Mail) WithHTML(html string) *Mail {
m.Body = html
m.Type = "text/html; charset=UTF-8"
return m
}
func (m *Mail) String() string {
return fmt.Sprintf("To: %s\r\n"+
"From: %s\r\n"+
"Subject: %s\r\n"+
"Content-Type: %s\r\n"+
"\r\n"+
"%s\r\n",
strings.Join(m.To.RawStrings(), ", "),
m.From.String(),
m.Subject,
m.Type,
m.Body,
)
}
func (m *Mail) Reader() *strings.Reader {
return strings.NewReader(m.String())
}

57
models/mail_address.go Normal file
View File

@ -0,0 +1,57 @@
package models
import "regexp"
const (
MailPattern = "[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\\.[a-zA-Z0-9-.]+"
EmailAddrPattern = ".*\\s<(" + MailPattern + ")>|(" + MailPattern + ")"
)
var (
mailRegex *regexp.Regexp
emailAddrRegex *regexp.Regexp
)
func init() {
mailRegex = regexp.MustCompile(MailPattern)
emailAddrRegex = regexp.MustCompile(EmailAddrPattern)
}
type MailAddress string
type MailAddresses []MailAddress
func (m MailAddress) String() string {
return string(m)
}
func (m MailAddress) Raw() string {
match := emailAddrRegex.FindStringSubmatch(string(m))
if len(match) == 3 {
if match[2] != "" {
return match[2]
}
return match[1]
}
return ""
}
func (m MailAddress) Valid() bool {
return emailAddrRegex.Match([]byte(m))
}
func (m MailAddresses) Strings() []string {
out := make([]string, len(m))
for i, s := range m {
out[i] = s.String()
}
return out
}
func (m MailAddresses) RawStrings() []string {
out := make([]string, len(m))
for i, s := range m {
out[i] = s.Raw()
}
return out
}

10
models/user.go
View File

@ -2,14 +2,6 @@ package models
import "regexp"
const (
MailPattern = "[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\\.[a-zA-Z0-9-.]+"
)
var (
mailRegex *regexp.Regexp
)
func init() {
mailRegex = regexp.MustCompile(MailPattern)
}
@ -17,7 +9,7 @@ func init() {
type User struct {
ID string `json:"id" gorm:"primary_key"`
ApiKey string `json:"api_key" gorm:"unique"`
Email string `json:"email"`
Email string `json:"email" gorm:"uniqueIndex:idx_user_email"`
Password string `json:"-"`
CreatedAt CustomTime `gorm:"type:timestamp; default:CURRENT_TIMESTAMP" swaggertype:"string" format:"date" example:"2006-01-02 15:04:05.000"`
LastLoggedInAt CustomTime `gorm:"type:timestamp; default:CURRENT_TIMESTAMP" swaggertype:"string" format:"date" example:"2006-01-02 15:04:05.000"`

1
repositories/user.go
View File

@ -141,6 +141,7 @@ func (r *UserRepository) Update(user *models.User) (*models.User, error) {
"share_machines": user.ShareMachines,
"wakatime_api_key": user.WakatimeApiKey,
"has_data": user.HasData,
"reset_token": user.ResetToken,
}
result := r.db.Model(user).Updates(updateMap)

9
routes/login.go
View File

@ -234,6 +234,7 @@ func (h *LoginHandler) PostSetPassword(w http.ResponseWriter, r *http.Request) {
}
user.Password = setRequest.Password
user.ResetToken = ""
if hash, err := utils.HashBcrypt(user.Password, h.config.Security.PasswordSalt); err != nil {
w.WriteHeader(http.StatusInternalServerError)
templates[conf.SetPasswordTemplate].Execute(w, h.buildViewModel(r).WithError("failed to set new password"))
@ -256,6 +257,12 @@ func (h *LoginHandler) PostResetPassword(w http.ResponseWriter, r *http.Request)
loadTemplates()
}
if !h.config.Mail.Enabled {
w.WriteHeader(http.StatusNotImplemented)
templates[conf.ResetPasswordTemplate].Execute(w, h.buildViewModel(r).WithError("mailing is disabled on this server"))
return
}
var resetRequest models.ResetPasswordRequest
if err := r.ParseForm(); err != nil {
w.WriteHeader(http.StatusBadRequest)
@ -277,7 +284,7 @@ func (h *LoginHandler) PostResetPassword(w http.ResponseWriter, r *http.Request)
go func(user *models.User) {
link := fmt.Sprintf("%s/set-password?token=%s", h.config.Server.GetPublicUrl(), user.ResetToken)
if err := h.mailSrvc.SendPasswordResetMail(user, link); err != nil {
logbuch.Error("%v", err)
logbuch.Error("failed to send password reset mail to %s – %v", user.ID, err)
} else {
logbuch.Info("sent password reset mail to %s", user.ID)
}

56
services/mail/mail.go
View File

@ -1,23 +1,61 @@
package mail
import (
"github.com/emvi/logbuch"
"bytes"
"fmt"
"github.com/markbates/pkger"
conf "github.com/muety/wakapi/config"
"github.com/muety/wakapi/models"
"github.com/muety/wakapi/services"
"io/ioutil"
"text/template"
)
const (
tplPath = "/views/mail"
tplNamePasswordReset = "reset_password"
subjectPasswordReset = "Wakapi – Password Reset"
)
type passwordResetLinkTplData struct {
ResetLink string
}
// Factory
func NewMailService() services.IMailService {
config := conf.Get()
if config.Mail.Provider == conf.MailProviderMailWhale {
return NewMailWhaleService(config.Mail.MailWhale)
if config.Mail.Enabled {
if config.Mail.Provider == conf.MailProviderMailWhale {
return NewMailWhaleService(config.Mail.MailWhale)
} else if config.Mail.Provider == conf.MailProviderSmtp {
return NewSMTPMailService(config.Mail.Smtp)
}
}
return &NoopMailService{}
}
type NoopMailService struct{}
func (n NoopMailService) SendPasswordResetMail(recipient *models.User, resetLink string) error {
logbuch.Info("noop mail service doing nothing instead of sending password reset mail to %s", recipient.ID)
return nil
func getPasswordResetTemplate(data passwordResetLinkTplData) (*bytes.Buffer, error) {
tpl, err := loadTemplate(tplNamePasswordReset)
if err != nil {
return nil, err
}
var rendered bytes.Buffer
if err := tpl.Execute(&rendered, data); err != nil {
return nil, err
}
return &rendered, nil
}
func loadTemplate(tplName string) (*template.Template, error) {
tplFile, err := pkger.Open(fmt.Sprintf("%s/%s.tpl.html", tplPath, tplName))
if err != nil {
return nil, err
}
defer tplFile.Close()
tplData, err := ioutil.ReadAll(tplFile)
if err != nil {
return nil, err
}
return template.New(tplName).Parse(string(tplData))
}

55
services/mail/mailwhale.go
View File

@ -5,21 +5,13 @@ import (
"encoding/json"
"errors"
"fmt"
"github.com/markbates/pkger"
conf "github.com/muety/wakapi/config"
"github.com/muety/wakapi/models"
"io/ioutil"
"net/http"
"text/template"
"time"
)
const (
tplPath = "/views/mail"
tplNamePasswordReset = "reset_password"
)
type MailWhaleService struct {
type MailWhaleMailService struct {
config *conf.MailwhaleMailConfig
httpClient *http.Client
}
@ -33,8 +25,8 @@ type MailWhaleSendRequest struct {
TemplateVars map[string]string `json:"template_vars"`
}
func NewMailWhaleService(config *conf.MailwhaleMailConfig) *MailWhaleService {
return &MailWhaleService{
func NewMailWhaleService(config *conf.MailwhaleMailConfig) *MailWhaleMailService {
return &MailWhaleMailService{
config: config,
httpClient: &http.Client{
Timeout: 10 * time.Second,
@ -42,25 +34,15 @@ func NewMailWhaleService(config *conf.MailwhaleMailConfig) *MailWhaleService {
}
}
func (m *MailWhaleService) SendPasswordResetMail(recipient *models.User, resetLink string) error {
tpl, err := m.loadTemplate(tplNamePasswordReset)
func (s *MailWhaleMailService) SendPasswordResetMail(recipient *models.User, resetLink string) error {
template, err := getPasswordResetTemplate(passwordResetLinkTplData{ResetLink: resetLink})
if err != nil {
return err
}
type data struct {
ResetLink string
}
var rendered bytes.Buffer
if err := tpl.Execute(&rendered, data{ResetLink: resetLink}); err != nil {
return err
}
return m.send(recipient.Email, "Wakapi – Password Reset", rendered.String(), true)
return s.send(recipient.Email, subjectPasswordReset, template.String(), true)
}
func (m *MailWhaleService) send(to, subject, body string, isHtml bool) error {
func (s *MailWhaleMailService) send(to, subject, body string, isHtml bool) error {
if to == "" {
return errors.New("no recipient mail address set, cannot send password reset link")
}
@ -76,36 +58,21 @@ func (m *MailWhaleService) send(to, subject, body string, isHtml bool) error {
}
payload, _ := json.Marshal(sendRequest)
req, err := http.NewRequest(http.MethodPost, fmt.Sprintf("%s/api/mail", m.config.Url), bytes.NewBuffer(payload))
req, err := http.NewRequest(http.MethodPost, fmt.Sprintf("%s/api/mail", s.config.Url), bytes.NewBuffer(payload))
if err != nil {
return err
}
req.SetBasicAuth(m.config.ClientId, m.config.ClientSecret)
req.SetBasicAuth(s.config.ClientId, s.config.ClientSecret)
req.Header.Set("Content-Type", "application/json")
res, err := m.httpClient.Do(req)
res, err := s.httpClient.Do(req)
if err != nil {
return err
}
if res.StatusCode >= 400 {
return errors.New(fmt.Sprintf("failed to send password reset mail to %v, got status %d from mailwhale", to, res.StatusCode))
return errors.New(fmt.Sprintf("got status %d from mailwhale", res.StatusCode))
}
return nil
}
func (m *MailWhaleService) loadTemplate(tplName string) (*template.Template, error) {
tplFile, err := pkger.Open(fmt.Sprintf("%s/%s.tpl.html", tplPath, tplName))
if err != nil {
return nil, err
}
defer tplFile.Close()
tplData, err := ioutil.ReadAll(tplFile)
if err != nil {
return nil, err
}
return template.New(tplName).Parse(string(tplData))
}

13
services/mail/noop.go Normal file
View File

@ -0,0 +1,13 @@
package mail
import (
"github.com/emvi/logbuch"
"github.com/muety/wakapi/models"
)
type NoopMailService struct{}
func (n *NoopMailService) SendPasswordResetMail(recipient *models.User, resetLink string) error {
logbuch.Info("noop mail service doing nothing instead of sending password reset mail to %s", recipient.ID)
return nil
}

100
services/mail/smtp.go Normal file
View File

@ -0,0 +1,100 @@
package mail
import (
"errors"
"github.com/emersion/go-sasl"
"github.com/emersion/go-smtp"
conf "github.com/muety/wakapi/config"
"github.com/muety/wakapi/models"
"io"
)
type SMTPMailService struct {
config *conf.SMTPMailConfig
auth sasl.Client
}
func NewSMTPMailService(config *conf.SMTPMailConfig) *SMTPMailService {
return &SMTPMailService{
config: config,
auth: sasl.NewPlainClient(
"",
config.Username,
config.Password,
),
}
}
func (s *SMTPMailService) SendPasswordResetMail(recipient *models.User, resetLink string) error {
template, err := getPasswordResetTemplate(passwordResetLinkTplData{ResetLink: resetLink})
if err != nil {
return err
}
mail := &models.Mail{
From: models.MailAddress(s.config.Sender),
To: models.MailAddresses([]models.MailAddress{models.MailAddress(recipient.Email)}),
Subject: subjectPasswordReset,
}
mail.WithHTML(template.String())
return s.send(
s.config.ConnStr(),
s.config.TLS,
s.auth,
mail.From.Raw(),
mail.To.RawStrings(),
mail.Reader(),
)
}
func (s *SMTPMailService) send(addr string, tls bool, a sasl.Client, from string, to []string, r io.Reader) error {
dial := smtp.Dial
if tls {
dial = func(addr string) (*smtp.Client, error) {
return smtp.DialTLS(addr, nil)
}
}
c, err := dial(addr)
if err != nil {
return err
}
defer c.Close()
if ok, _ := c.Extension("STARTTLS"); ok {
if err = c.StartTLS(nil); err != nil {
return err
}
}
if a != nil {
if ok, _ := c.Extension("AUTH"); !ok {
return errors.New("smtp: server doesn't support AUTH")
}
if err = c.Auth(a); err != nil {
return err
}
}
if err = c.Mail(from, nil); err != nil {
return err
}
for _, addr := range to {
if err = c.Rcpt(addr); err != nil {
return err
}
}
w, err := c.Data()
if err != nil {
return err
}
_, err = io.Copy(w, r)
if err != nil {
return err
}
err = w.Close()
if err != nil {
return err
}
return c.Quit()
}

1
services/mail/utils.go Normal file
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@ -0,0 +1 @@
package mail