18f26cfbf7
Before there was a "graceful function": RunWithShutdownFns, it's mainly for some modules which doesn't support context. The old queue system doesn't work well with context, so the old queues need it. After the queue refactoring, the new queue works with context well, so, use Golang context as much as possible, the `RunWithShutdownFns` could be removed (replaced by RunWithCancel for context cancel mechanism), the related code could be simplified. This PR also fixes some legacy queue-init problems, eg: * typo : archiver: "unable to create codes indexer queue" => "unable to create repo-archive queue" * no nil check for failed queues, which causes unfriendly panic After this PR, many goroutines could have better display name:  
441 lines
12 KiB
Go
441 lines
12 KiB
Go
// Copyright 2014 The Gogs Authors. All rights reserved.
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// Copyright 2017 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package mailer
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import (
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"bytes"
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"context"
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"crypto/tls"
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"fmt"
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"hash/fnv"
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"io"
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"net"
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"net/smtp"
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"os"
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"os/exec"
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"strings"
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"time"
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"code.gitea.io/gitea/modules/base"
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"code.gitea.io/gitea/modules/graceful"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/process"
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"code.gitea.io/gitea/modules/queue"
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"code.gitea.io/gitea/modules/setting"
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"code.gitea.io/gitea/modules/templates"
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ntlmssp "github.com/Azure/go-ntlmssp"
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"github.com/jaytaylor/html2text"
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"gopkg.in/gomail.v2"
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)
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// Message mail body and log info
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type Message struct {
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Info string // Message information for log purpose.
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FromAddress string
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FromDisplayName string
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To string // Use only one recipient to prevent leaking of addresses
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ReplyTo string
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Subject string
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Date time.Time
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Body string
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Headers map[string][]string
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}
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// ToMessage converts a Message to gomail.Message
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func (m *Message) ToMessage() *gomail.Message {
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msg := gomail.NewMessage()
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msg.SetAddressHeader("From", m.FromAddress, m.FromDisplayName)
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msg.SetHeader("To", m.To)
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if m.ReplyTo != "" {
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msg.SetHeader("Reply-To", m.ReplyTo)
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}
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for header := range m.Headers {
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msg.SetHeader(header, m.Headers[header]...)
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}
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if len(setting.MailService.SubjectPrefix) > 0 {
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msg.SetHeader("Subject", setting.MailService.SubjectPrefix+" "+m.Subject)
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} else {
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msg.SetHeader("Subject", m.Subject)
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}
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msg.SetDateHeader("Date", m.Date)
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msg.SetHeader("X-Auto-Response-Suppress", "All")
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plainBody, err := html2text.FromString(m.Body)
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if err != nil || setting.MailService.SendAsPlainText {
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if strings.Contains(base.TruncateString(m.Body, 100), "<html>") {
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log.Warn("Mail contains HTML but configured to send as plain text.")
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}
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msg.SetBody("text/plain", plainBody)
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} else {
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msg.SetBody("text/plain", plainBody)
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msg.AddAlternative("text/html", m.Body)
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}
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if len(msg.GetHeader("Message-ID")) == 0 {
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msg.SetHeader("Message-ID", m.generateAutoMessageID())
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}
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return msg
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}
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// SetHeader adds additional headers to a message
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func (m *Message) SetHeader(field string, value ...string) {
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m.Headers[field] = value
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}
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func (m *Message) generateAutoMessageID() string {
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dateMs := m.Date.UnixNano() / 1e6
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h := fnv.New64()
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if len(m.To) > 0 {
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_, _ = h.Write([]byte(m.To))
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}
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_, _ = h.Write([]byte(m.Subject))
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_, _ = h.Write([]byte(m.Body))
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return fmt.Sprintf("<autogen-%d-%016x@%s>", dateMs, h.Sum64(), setting.Domain)
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}
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// NewMessageFrom creates new mail message object with custom From header.
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func NewMessageFrom(to, fromDisplayName, fromAddress, subject, body string) *Message {
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log.Trace("NewMessageFrom (body):\n%s", body)
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return &Message{
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FromAddress: fromAddress,
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FromDisplayName: fromDisplayName,
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To: to,
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Subject: subject,
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Date: time.Now(),
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Body: body,
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Headers: map[string][]string{},
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}
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}
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// NewMessage creates new mail message object with default From header.
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func NewMessage(to, subject, body string) *Message {
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return NewMessageFrom(to, setting.MailService.FromName, setting.MailService.FromEmail, subject, body)
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}
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type loginAuth struct {
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username, password string
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}
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// LoginAuth SMTP AUTH LOGIN Auth Handler
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func LoginAuth(username, password string) smtp.Auth {
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return &loginAuth{username, password}
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}
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// Start start SMTP login auth
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func (a *loginAuth) Start(server *smtp.ServerInfo) (string, []byte, error) {
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return "LOGIN", []byte{}, nil
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}
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// Next next step of SMTP login auth
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func (a *loginAuth) Next(fromServer []byte, more bool) ([]byte, error) {
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if more {
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switch string(fromServer) {
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case "Username:":
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return []byte(a.username), nil
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case "Password:":
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return []byte(a.password), nil
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default:
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return nil, fmt.Errorf("unknown fromServer: %s", string(fromServer))
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}
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}
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return nil, nil
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}
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type ntlmAuth struct {
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username, password, domain string
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domainNeeded bool
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}
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// NtlmAuth SMTP AUTH NTLM Auth Handler
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func NtlmAuth(username, password string) smtp.Auth {
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user, domain, domainNeeded := ntlmssp.GetDomain(username)
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return &ntlmAuth{user, password, domain, domainNeeded}
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}
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// Start starts SMTP NTLM Auth
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func (a *ntlmAuth) Start(server *smtp.ServerInfo) (string, []byte, error) {
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negotiateMessage, err := ntlmssp.NewNegotiateMessage(a.domain, "")
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return "NTLM", negotiateMessage, err
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}
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// Next next step of SMTP ntlm auth
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func (a *ntlmAuth) Next(fromServer []byte, more bool) ([]byte, error) {
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if more {
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if len(fromServer) == 0 {
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return nil, fmt.Errorf("ntlm ChallengeMessage is empty")
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}
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authenticateMessage, err := ntlmssp.ProcessChallenge(fromServer, a.username, a.password, a.domainNeeded)
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return authenticateMessage, err
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}
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return nil, nil
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}
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// Sender SMTP mail sender
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type smtpSender struct{}
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// Send send email
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func (s *smtpSender) Send(from string, to []string, msg io.WriterTo) error {
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opts := setting.MailService
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var network string
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var address string
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if opts.Protocol == "smtp+unix" {
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network = "unix"
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address = opts.SMTPAddr
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} else {
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network = "tcp"
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address = net.JoinHostPort(opts.SMTPAddr, opts.SMTPPort)
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}
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conn, err := net.Dial(network, address)
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if err != nil {
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return fmt.Errorf("failed to establish network connection to SMTP server: %w", err)
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}
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defer conn.Close()
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var tlsconfig *tls.Config
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if opts.Protocol == "smtps" || opts.Protocol == "smtp+starttls" {
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tlsconfig = &tls.Config{
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InsecureSkipVerify: opts.ForceTrustServerCert,
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ServerName: opts.SMTPAddr,
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}
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if opts.UseClientCert {
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cert, err := tls.LoadX509KeyPair(opts.ClientCertFile, opts.ClientKeyFile)
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if err != nil {
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return fmt.Errorf("could not load SMTP client certificate: %w", err)
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}
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tlsconfig.Certificates = []tls.Certificate{cert}
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}
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}
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if opts.Protocol == "smtps" {
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conn = tls.Client(conn, tlsconfig)
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}
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host := "localhost"
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if opts.Protocol == "smtp+unix" {
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host = opts.SMTPAddr
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}
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client, err := smtp.NewClient(conn, host)
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if err != nil {
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return fmt.Errorf("could not initiate SMTP session: %w", err)
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}
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if opts.EnableHelo {
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hostname := opts.HeloHostname
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if len(hostname) == 0 {
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hostname, err = os.Hostname()
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if err != nil {
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return fmt.Errorf("could not retrieve system hostname: %w", err)
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}
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}
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if err = client.Hello(hostname); err != nil {
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return fmt.Errorf("failed to issue HELO command: %w", err)
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}
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}
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if opts.Protocol == "smtp+starttls" {
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hasStartTLS, _ := client.Extension("STARTTLS")
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if hasStartTLS {
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if err = client.StartTLS(tlsconfig); err != nil {
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return fmt.Errorf("failed to start TLS connection: %w", err)
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}
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} else {
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log.Warn("StartTLS requested, but SMTP server does not support it; falling back to regular SMTP")
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}
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}
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canAuth, options := client.Extension("AUTH")
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if len(opts.User) > 0 {
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if !canAuth {
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return fmt.Errorf("SMTP server does not support AUTH, but credentials provided")
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}
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var auth smtp.Auth
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if strings.Contains(options, "CRAM-MD5") {
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auth = smtp.CRAMMD5Auth(opts.User, opts.Passwd)
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} else if strings.Contains(options, "PLAIN") {
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auth = smtp.PlainAuth("", opts.User, opts.Passwd, host)
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} else if strings.Contains(options, "LOGIN") {
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// Patch for AUTH LOGIN
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auth = LoginAuth(opts.User, opts.Passwd)
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} else if strings.Contains(options, "NTLM") {
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auth = NtlmAuth(opts.User, opts.Passwd)
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}
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if auth != nil {
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if err = client.Auth(auth); err != nil {
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return fmt.Errorf("failed to authenticate SMTP: %w", err)
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}
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}
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}
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if opts.OverrideEnvelopeFrom {
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if err = client.Mail(opts.EnvelopeFrom); err != nil {
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return fmt.Errorf("failed to issue MAIL command: %w", err)
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}
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} else {
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if err = client.Mail(from); err != nil {
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return fmt.Errorf("failed to issue MAIL command: %w", err)
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}
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}
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for _, rec := range to {
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if err = client.Rcpt(rec); err != nil {
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return fmt.Errorf("failed to issue RCPT command: %w", err)
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}
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}
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w, err := client.Data()
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if err != nil {
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return fmt.Errorf("failed to issue DATA command: %w", err)
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} else if _, err = msg.WriteTo(w); err != nil {
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return fmt.Errorf("SMTP write failed: %w", err)
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} else if err = w.Close(); err != nil {
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return fmt.Errorf("SMTP close failed: %w", err)
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}
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return client.Quit()
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}
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// Sender sendmail mail sender
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type sendmailSender struct{}
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// Send send email
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func (s *sendmailSender) Send(from string, to []string, msg io.WriterTo) error {
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var err error
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var closeError error
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var waitError error
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envelopeFrom := from
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if setting.MailService.OverrideEnvelopeFrom {
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envelopeFrom = setting.MailService.EnvelopeFrom
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}
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args := []string{"-f", envelopeFrom, "-i"}
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args = append(args, setting.MailService.SendmailArgs...)
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args = append(args, to...)
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log.Trace("Sending with: %s %v", setting.MailService.SendmailPath, args)
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desc := fmt.Sprintf("SendMail: %s %v", setting.MailService.SendmailPath, args)
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ctx, _, finished := process.GetManager().AddContextTimeout(graceful.GetManager().HammerContext(), setting.MailService.SendmailTimeout, desc)
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defer finished()
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cmd := exec.CommandContext(ctx, setting.MailService.SendmailPath, args...)
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pipe, err := cmd.StdinPipe()
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if err != nil {
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return err
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}
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process.SetSysProcAttribute(cmd)
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if err = cmd.Start(); err != nil {
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_ = pipe.Close()
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return err
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}
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if setting.MailService.SendmailConvertCRLF {
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buf := &strings.Builder{}
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_, err = msg.WriteTo(buf)
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if err == nil {
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_, err = strings.NewReplacer("\r\n", "\n").WriteString(pipe, buf.String())
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}
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} else {
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_, err = msg.WriteTo(pipe)
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}
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// we MUST close the pipe or sendmail will hang waiting for more of the message
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// Also we should wait on our sendmail command even if something fails
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closeError = pipe.Close()
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waitError = cmd.Wait()
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if err != nil {
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return err
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} else if closeError != nil {
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return closeError
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} else {
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return waitError
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}
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}
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// Sender sendmail mail sender
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type dummySender struct{}
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// Send send email
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func (s *dummySender) Send(from string, to []string, msg io.WriterTo) error {
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buf := bytes.Buffer{}
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if _, err := msg.WriteTo(&buf); err != nil {
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return err
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}
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log.Info("Mail From: %s To: %v Body: %s", from, to, buf.String())
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return nil
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}
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var mailQueue *queue.WorkerPoolQueue[*Message]
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// Sender sender for sending mail synchronously
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var Sender gomail.Sender
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// NewContext start mail queue service
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func NewContext(ctx context.Context) {
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// Need to check if mailQueue is nil because in during reinstall (user had installed
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// before but switched install lock off), this function will be called again
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// while mail queue is already processing tasks, and produces a race condition.
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if setting.MailService == nil || mailQueue != nil {
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return
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}
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switch setting.MailService.Protocol {
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case "sendmail":
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Sender = &sendmailSender{}
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case "dummy":
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Sender = &dummySender{}
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default:
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Sender = &smtpSender{}
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}
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subjectTemplates, bodyTemplates = templates.Mailer(ctx)
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mailQueue = queue.CreateSimpleQueue(graceful.GetManager().ShutdownContext(), "mail", func(items ...*Message) []*Message {
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for _, msg := range items {
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gomailMsg := msg.ToMessage()
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log.Trace("New e-mail sending request %s: %s", gomailMsg.GetHeader("To"), msg.Info)
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if err := gomail.Send(Sender, gomailMsg); err != nil {
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log.Error("Failed to send emails %s: %s - %v", gomailMsg.GetHeader("To"), msg.Info, err)
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} else {
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log.Trace("E-mails sent %s: %s", gomailMsg.GetHeader("To"), msg.Info)
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}
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}
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return nil
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})
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if mailQueue == nil {
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log.Fatal("Unable to create mail queue")
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}
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go graceful.GetManager().RunWithCancel(mailQueue)
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}
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// SendAsync send mail asynchronously
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func SendAsync(msg *Message) {
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SendAsyncs([]*Message{msg})
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}
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// SendAsyncs send mails asynchronously
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func SendAsyncs(msgs []*Message) {
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if setting.MailService == nil {
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log.Error("Mailer: SendAsyncs is being invoked but mail service hasn't been initialized")
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return
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}
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go func() {
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for _, msg := range msgs {
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_ = mailQueue.Push(msg)
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}
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}()
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}
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