forgejo/services/mailer/mail.go
mrsdizzie 4563eb873d
Support unicode emojis and remove emojify.js (#11032)
* Support unicode emojis and remove emojify.js

This PR replaces all use of emojify.js and adds unicode emoji support to various areas of gitea.

This works in a few ways:

First it adds emoji parsing support into gitea itself. This allows us to

 * Render emojis from valid alias (😄)
 * Detect unicode emojis and let us put them in their own class with proper aria-labels and styling
 * Easily allow for custom "emoji"
 * Support all emoji rendering and features without javascript
 * Uses plain unicode and lets the system render in appropriate emoji font
 * Doesn't leave us relying on external sources for updates/fixes/features

That same list of emoji is also used to create a json file which replaces the part of emojify.js that populates the emoji search tribute. This file is about 35KB with GZIP turned on and I've set it to load after the page renders to not hinder page load time (and this removes loading emojify.js also)

For custom "emoji" it uses a pretty simple scheme of just looking for /emojis/img/name.png where name is something a user has put in the "allowed reactions" setting we already have. The gitea reaction that was previously hard coded into a forked copy of emojify.js is included and works as a custom reaction under this method.

The emoji data sourced here is from https://github.com/github/gemoji which is the gem library Github uses for their emoji rendering (and a data source for other sites). So we should be able to easily render any emoji and :alias: that Github can, removing any errors from migrated content. They also update it as well, so we can sync when there are new unicode emoji lists released.

I've included a slimmed down and slightly modified forked copy of https://github.com/knq/emoji to make up our own emoji module. The code is pretty straight forward and again allows us to have a lot of flexibility in what happens.

I had seen a few comments about performance in some of the other threads if we render this ourselves, but there doesn't seem to be any issue here. In a test it can parse, convert, and render 1,000 emojis inside of a large markdown table in about 100ms on my laptop (which is many more emojis than will ever be in any normal issue). This also prevents any flickering and other weirdness from using javascript to render some things while using go for others.

Not included here are image fall back URLS. I don't really think they are necessary for anything new being written in 2020. However, managing the emoji ourselves would allow us to add these as a feature later on if it seems necessary.

Fixes: https://github.com/go-gitea/gitea/issues/9182
Fixes: https://github.com/go-gitea/gitea/issues/8974
Fixes: https://github.com/go-gitea/gitea/issues/8953
Fixes: https://github.com/go-gitea/gitea/issues/6628
Fixes: https://github.com/go-gitea/gitea/issues/5130

* add new shared function emojiHTML

* don't increase emoji size in issue title

* Update templates/repo/issue/view_content/add_reaction.tmpl

Co-Authored-By: 6543 <6543@obermui.de>

* Support for emoji rendering in various templates

* Render code and review comments as they should be

* Better way to handle mail subjects

* insert unicode from tribute selection

* Add template helper for plain text when needed

* Use existing replace function I forgot about

* Don't include emoji greater than Unicode Version 12

Only include emoji and aliases in JSON

* Update build/generate-emoji.go

* Tweak regex slightly to really match everything including random invisible characters. Run tests for every emoji we have

* final updates

* code review

* code review

* hard code gitea custom emoji to match previous behavior

* Update .eslintrc

Co-Authored-By: silverwind <me@silverwind.io>

* disable preempt

Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: Lauris BH <lauris@nix.lv>
Co-authored-by: guillep2k <18600385+guillep2k@users.noreply.github.com>
2020-04-28 15:05:39 -03:00

341 lines
10 KiB
Go

// Copyright 2016 The Gogs Authors. All rights reserved.
// Copyright 2019 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package mailer
import (
"bytes"
"fmt"
"html/template"
"mime"
"regexp"
"strings"
texttmpl "text/template"
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/modules/base"
"code.gitea.io/gitea/modules/emoji"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/markup"
"code.gitea.io/gitea/modules/markup/markdown"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/timeutil"
"gopkg.in/gomail.v2"
)
const (
mailAuthActivate base.TplName = "auth/activate"
mailAuthActivateEmail base.TplName = "auth/activate_email"
mailAuthResetPassword base.TplName = "auth/reset_passwd"
mailAuthRegisterNotify base.TplName = "auth/register_notify"
mailNotifyCollaborator base.TplName = "notify/collaborator"
// There's no actual limit for subject in RFC 5322
mailMaxSubjectRunes = 256
)
var (
bodyTemplates *template.Template
subjectTemplates *texttmpl.Template
subjectRemoveSpaces = regexp.MustCompile(`[\s]+`)
)
// InitMailRender initializes the mail renderer
func InitMailRender(subjectTpl *texttmpl.Template, bodyTpl *template.Template) {
subjectTemplates = subjectTpl
bodyTemplates = bodyTpl
}
// SendTestMail sends a test mail
func SendTestMail(email string) error {
return gomail.Send(Sender, NewMessage([]string{email}, "Gitea Test Email!", "Gitea Test Email!").ToMessage())
}
// SendUserMail sends a mail to the user
func SendUserMail(language string, u *models.User, tpl base.TplName, code, subject, info string) {
data := map[string]interface{}{
"DisplayName": u.DisplayName(),
"ActiveCodeLives": timeutil.MinutesToFriendly(setting.Service.ActiveCodeLives, language),
"ResetPwdCodeLives": timeutil.MinutesToFriendly(setting.Service.ResetPwdCodeLives, language),
"Code": code,
}
var content bytes.Buffer
if err := bodyTemplates.ExecuteTemplate(&content, string(tpl), data); err != nil {
log.Error("Template: %v", err)
return
}
msg := NewMessage([]string{u.Email}, subject, content.String())
msg.Info = fmt.Sprintf("UID: %d, %s", u.ID, info)
SendAsync(msg)
}
// Locale represents an interface to translation
type Locale interface {
Language() string
Tr(string, ...interface{}) string
}
// SendActivateAccountMail sends an activation mail to the user (new user registration)
func SendActivateAccountMail(locale Locale, u *models.User) {
SendUserMail(locale.Language(), u, mailAuthActivate, u.GenerateActivateCode(), locale.Tr("mail.activate_account"), "activate account")
}
// SendResetPasswordMail sends a password reset mail to the user
func SendResetPasswordMail(locale Locale, u *models.User) {
SendUserMail(locale.Language(), u, mailAuthResetPassword, u.GenerateActivateCode(), locale.Tr("mail.reset_password"), "recover account")
}
// SendActivateEmailMail sends confirmation email to confirm new email address
func SendActivateEmailMail(locale Locale, u *models.User, email *models.EmailAddress) {
data := map[string]interface{}{
"DisplayName": u.DisplayName(),
"ActiveCodeLives": timeutil.MinutesToFriendly(setting.Service.ActiveCodeLives, locale.Language()),
"Code": u.GenerateEmailActivateCode(email.Email),
"Email": email.Email,
}
var content bytes.Buffer
if err := bodyTemplates.ExecuteTemplate(&content, string(mailAuthActivateEmail), data); err != nil {
log.Error("Template: %v", err)
return
}
msg := NewMessage([]string{email.Email}, locale.Tr("mail.activate_email"), content.String())
msg.Info = fmt.Sprintf("UID: %d, activate email", u.ID)
SendAsync(msg)
}
// SendRegisterNotifyMail triggers a notify e-mail by admin created a account.
func SendRegisterNotifyMail(locale Locale, u *models.User) {
if setting.MailService == nil {
log.Warn("SendRegisterNotifyMail is being invoked but mail service hasn't been initialized")
return
}
data := map[string]interface{}{
"DisplayName": u.DisplayName(),
"Username": u.Name,
}
var content bytes.Buffer
if err := bodyTemplates.ExecuteTemplate(&content, string(mailAuthRegisterNotify), data); err != nil {
log.Error("Template: %v", err)
return
}
msg := NewMessage([]string{u.Email}, locale.Tr("mail.register_notify"), content.String())
msg.Info = fmt.Sprintf("UID: %d, registration notify", u.ID)
SendAsync(msg)
}
// SendCollaboratorMail sends mail notification to new collaborator.
func SendCollaboratorMail(u, doer *models.User, repo *models.Repository) {
repoName := repo.FullName()
subject := fmt.Sprintf("%s added you to %s", doer.DisplayName(), repoName)
data := map[string]interface{}{
"Subject": subject,
"RepoName": repoName,
"Link": repo.HTMLURL(),
}
var content bytes.Buffer
if err := bodyTemplates.ExecuteTemplate(&content, string(mailNotifyCollaborator), data); err != nil {
log.Error("Template: %v", err)
return
}
msg := NewMessage([]string{u.Email}, subject, content.String())
msg.Info = fmt.Sprintf("UID: %d, add collaborator", u.ID)
SendAsync(msg)
}
func composeIssueCommentMessages(ctx *mailCommentContext, tos []string, fromMention bool, info string) []*Message {
var (
subject string
link string
prefix string
// Fall back subject for bad templates, make sure subject is never empty
fallback string
reviewComments []*models.Comment
)
commentType := models.CommentTypeComment
if ctx.Comment != nil {
commentType = ctx.Comment.Type
link = ctx.Issue.HTMLURL() + "#" + ctx.Comment.HashTag()
} else {
link = ctx.Issue.HTMLURL()
}
reviewType := models.ReviewTypeComment
if ctx.Comment != nil && ctx.Comment.Review != nil {
reviewType = ctx.Comment.Review.Type
}
// This is the body of the new issue or comment, not the mail body
body := string(markup.RenderByType(markdown.MarkupName, []byte(ctx.Content), ctx.Issue.Repo.HTMLURL(), ctx.Issue.Repo.ComposeMetas()))
actType, actName, tplName := actionToTemplate(ctx.Issue, ctx.ActionType, commentType, reviewType)
if actName != "new" {
prefix = "Re: "
}
fallback = prefix + fallbackMailSubject(ctx.Issue)
if ctx.Comment != nil && ctx.Comment.Review != nil {
reviewComments = make([]*models.Comment, 0, 10)
for _, lines := range ctx.Comment.Review.CodeComments {
for _, comments := range lines {
reviewComments = append(reviewComments, comments...)
}
}
}
mailMeta := map[string]interface{}{
"FallbackSubject": fallback,
"Body": body,
"Link": link,
"Issue": ctx.Issue,
"Comment": ctx.Comment,
"IsPull": ctx.Issue.IsPull,
"User": ctx.Issue.Repo.MustOwner(),
"Repo": ctx.Issue.Repo.FullName(),
"Doer": ctx.Doer,
"IsMention": fromMention,
"SubjectPrefix": prefix,
"ActionType": actType,
"ActionName": actName,
"ReviewComments": reviewComments,
}
var mailSubject bytes.Buffer
if err := subjectTemplates.ExecuteTemplate(&mailSubject, string(tplName), mailMeta); err == nil {
subject = sanitizeSubject(mailSubject.String())
} else {
log.Error("ExecuteTemplate [%s]: %v", string(tplName)+"/subject", err)
}
if subject == "" {
subject = fallback
}
subject = emoji.ReplaceAliases(subject)
mailMeta["Subject"] = subject
var mailBody bytes.Buffer
if err := bodyTemplates.ExecuteTemplate(&mailBody, string(tplName), mailMeta); err != nil {
log.Error("ExecuteTemplate [%s]: %v", string(tplName)+"/body", err)
}
// Make sure to compose independent messages to avoid leaking user emails
msgs := make([]*Message, 0, len(tos))
for _, to := range tos {
msg := NewMessageFrom([]string{to}, ctx.Doer.DisplayName(), setting.MailService.FromEmail, subject, mailBody.String())
msg.Info = fmt.Sprintf("Subject: %s, %s", subject, info)
// Set Message-ID on first message so replies know what to reference
if actName == "new" {
msg.SetHeader("Message-ID", "<"+ctx.Issue.ReplyReference()+">")
} else {
msg.SetHeader("In-Reply-To", "<"+ctx.Issue.ReplyReference()+">")
msg.SetHeader("References", "<"+ctx.Issue.ReplyReference()+">")
}
msgs = append(msgs, msg)
}
return msgs
}
func sanitizeSubject(subject string) string {
runes := []rune(strings.TrimSpace(subjectRemoveSpaces.ReplaceAllLiteralString(subject, " ")))
if len(runes) > mailMaxSubjectRunes {
runes = runes[:mailMaxSubjectRunes]
}
// Encode non-ASCII characters
return mime.QEncoding.Encode("utf-8", string(runes))
}
// SendIssueAssignedMail composes and sends issue assigned email
func SendIssueAssignedMail(issue *models.Issue, doer *models.User, content string, comment *models.Comment, tos []string) {
SendAsyncs(composeIssueCommentMessages(&mailCommentContext{
Issue: issue,
Doer: doer,
ActionType: models.ActionType(0),
Content: content,
Comment: comment,
}, tos, false, "issue assigned"))
}
// actionToTemplate returns the type and name of the action facing the user
// (slightly different from models.ActionType) and the name of the template to use (based on availability)
func actionToTemplate(issue *models.Issue, actionType models.ActionType,
commentType models.CommentType, reviewType models.ReviewType) (typeName, name, template string) {
if issue.IsPull {
typeName = "pull"
} else {
typeName = "issue"
}
switch actionType {
case models.ActionCreateIssue, models.ActionCreatePullRequest:
name = "new"
case models.ActionCommentIssue, models.ActionCommentPull:
name = "comment"
case models.ActionCloseIssue, models.ActionClosePullRequest:
name = "close"
case models.ActionReopenIssue, models.ActionReopenPullRequest:
name = "reopen"
case models.ActionMergePullRequest:
name = "merge"
default:
switch commentType {
case models.CommentTypeReview:
switch reviewType {
case models.ReviewTypeApprove:
name = "approve"
case models.ReviewTypeReject:
name = "reject"
default:
name = "review"
}
case models.CommentTypeCode:
name = "code"
case models.CommentTypeAssignees:
name = "assigned"
default:
name = "default"
}
}
template = typeName + "/" + name
ok := bodyTemplates.Lookup(template) != nil
if !ok && typeName != "issue" {
template = "issue/" + name
ok = bodyTemplates.Lookup(template) != nil
}
if !ok {
template = typeName + "/default"
ok = bodyTemplates.Lookup(template) != nil
}
if !ok {
template = "issue/default"
}
return
}