261 lines
10 KiB
Go
261 lines
10 KiB
Go
// Copyright 2022 E99p1ant. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package mail
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import (
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"bytes"
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"crypto/tls"
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"embed"
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"fmt"
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"html/template"
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"strings"
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"time"
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"github.com/pkg/errors"
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"gopkg.in/gomail.v2"
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"github.com/tamakyi/TamaBox/internal/conf"
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"github.com/tamakyi/TamaBox/templates"
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)
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func SendNewQuestionMail(email, domain string, questionID uint, questionContent string, token string) error {
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params := map[string]string{
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"link": fmt.Sprintf("%s/_/%s/%d?t=%s", conf.App.ExternalURL, domain, questionID, token),
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"question": questionContent,
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}
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return sendTemplateMail(email, "【狼的提问箱】您有一个新的提问", templates.FS, "mail/new-question.html", params)
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}
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func SendNewQuestionMailToUser(email, domain string, questionID uint, questionContent string, token string) error {
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params := map[string]string{
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"link": fmt.Sprintf("%s/_/%s/%d?t=%s", conf.App.ExternalURL, domain, questionID, token),
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"question": questionContent,
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}
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return sendTemplateMail(email, "【狼的提问箱】您发送了一个新的提问", templates.FS, "mail/new-question-to-user.html", params)
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}
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func SendNewAnswerMail(email, domain string, questionID uint, question, answer string, token string) error {
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params := map[string]string{
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"link": fmt.Sprintf("%s/_/%s/%d?t=%s", conf.App.ExternalURL, domain, questionID, token),
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"question": question,
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"answer": answer,
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}
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return sendTemplateMail(email, "【狼的提问箱】您的提问有了回复", templates.FS, "mail/new-answer.html", params)
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}
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func SendPasswordRecoveryMail(email, code string) error {
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params := map[string]string{
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"link": fmt.Sprintf("%s/recover-password?code=%s", conf.App.ExternalURL, code),
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"email": email,
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}
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return sendTemplateMail(email, "【狼的提问箱】账号密码找回", templates.FS, "mail/password-recovery.html", params)
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}
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// SendNewFollowUpMail 通知提问箱主人：有人对某条已回答的提问进行了追问。
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// 链接带 token，与 SendNewQuestionMail 对齐——主人于未登录设备（手机邮件客户端）点开私密提问时
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// 也能凭 token 查看，否则会被 Questioner 中间件重定向到首页。
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func SendNewFollowUpMail(email, domain string, questionID uint, questionContent string, followUpContent string, token string) error {
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params := map[string]string{
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"link": fmt.Sprintf("%s/_/%s/%d?t=%s", conf.App.ExternalURL, domain, questionID, token),
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"question": questionContent,
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"followup": followUpContent,
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}
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return sendTemplateMail(email, "【狼的提问箱】您的提问有了追问", templates.FS, "mail/new-follow-up.html", params)
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}
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// SendNewConversationMail 通知有新私聊发起（使用 token 而非 conversationID）
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func SendNewConversationMail(email, askerName, domain string, token string, firstMessage string) error {
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params := map[string]string{
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"link": fmt.Sprintf("%s/_/%s/chat/%s", conf.App.ExternalURL, domain, token),
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"asker": askerName,
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"content": firstMessage,
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}
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return sendTemplateMail(email, "【狼的提问箱】有人发起了私聊", templates.FS, "mail/new-conversation.html", params)
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}
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// SendNewMessageMail 通知私聊中有新消息（使用 token 而非 conversationID）
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func SendNewMessageMail(email, senderName, domain string, token string, content string) error {
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params := map[string]string{
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"link": fmt.Sprintf("%s/_/%s/chat/%s", conf.App.ExternalURL, domain, token),
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"sender": senderName,
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"content": content,
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}
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return sendTemplateMail(email, "【狼的提问箱】私聊新消息", templates.FS, "mail/new-message.html", params)
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}
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// SendNewVoteSubmissionMail 通知箱主：表单投票收到新回复（链接指向管理后台结果页）。
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func SendNewVoteSubmissionMail(email, voteTitle string, voteID uint) error {
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params := map[string]string{
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"link": fmt.Sprintf("%s/user/votes/%d/results", conf.App.ExternalURL, voteID),
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"title": voteTitle,
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}
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return sendTemplateMail(email, "【狼的提问箱】您的投票收到了新回复", templates.FS, "mail/new-vote.html", params)
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}
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// SendSecurityAlertMail 发送安全告警：检测到疑似批量扫描/探测并触发自动封禁时通知管理员。
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// provider 为来源 IP 的网络归属标签（见 internal/security/ipinfo），proxied 表示
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// IP 属于 CDN/WAF/代理网络（此时封禁出口 IP 可能无法拦截真实攻击者，邮件中额外提示）。
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func SendSecurityAlertMail(ip, provider string, proxied bool, samplePaths []string, durationMinutes int) error {
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proxyHint := ""
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if proxied {
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proxyHint = "1"
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}
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params := map[string]string{
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"ip": ip,
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"provider": provider,
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"proxy_hint": proxyHint,
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"paths": strings.Join(samplePaths, "、"),
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"duration": fmt.Sprintf("%d", durationMinutes),
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"time": time.Now().Format("2006-01-02 15:04:05"),
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}
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return sendTemplateMail(conf.Security.SecurityAlertEmail, "【狼的提问箱】检测到疑似批量扫描，已自动封禁 IP", templates.FS, "mail/security-alert.html", params)
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}
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// HoneypotAlert 蜜罐捕获到破解尝试时的告警载荷。
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type HoneypotAlert struct {
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IP string
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Provider string
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Proxied bool
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Path string
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Username string
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Password string
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Banned bool
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DurationMin int
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}
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// SendHoneypotAlertMail 发送「蜜罐捕获到破解尝试」告警。
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//
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// 与 SendSecurityAlertMail 共用 conf.Security.SecurityAlertEmail 收件人，不新增配置项。
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// 邮件中直接给出捕获到的用户名/密码：这是本功能的核心价值（拿到攻击者正在用的字典），
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// 但也意味着这封邮件是敏感物 —— 收件人应当只有运维本人，不要转发到公共群组。
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func SendHoneypotAlertMail(a HoneypotAlert) error {
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proxyHint := ""
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if a.Proxied {
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proxyHint = "1"
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}
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disposition := "已记录，未触发封禁"
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if a.Banned {
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disposition = fmt.Sprintf("已记录并自动临时封禁 %d 分钟", a.DurationMin)
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}
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password := a.Password
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if password == "" {
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password = "(空)"
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}
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username := a.Username
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if username == "" {
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username = "(空)"
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}
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params := map[string]string{
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"ip": a.IP,
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"provider": a.Provider,
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"proxy_hint": proxyHint,
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"path": a.Path,
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"username": username,
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"password": password,
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"disposition": disposition,
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"time": time.Now().Format("2006-01-02 15:04:05"),
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}
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return sendTemplateMail(conf.Security.SecurityAlertEmail, "【狼的提问箱】蜜罐捕获到后台破解尝试", templates.FS, "mail/honeypot-alert.html", params)
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}
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// SendAbuseAlertMail 发送「某箱主收到集中举报」的阈值告警。
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//
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// 与 SendSecurityAlertMail 共用 conf.Security.SecurityAlertEmail 收件人，不新增配置项。
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// 邮件只给计数与下一步命令，不贴举报内容原文：邮件可能被转发/归档，贴原文等于把挂人内容
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// 又复制了一份出去；要看内容请用 reports --domain。
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func SendAbuseAlertMail(domain, name string, count24, count7d int64) error {
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params := map[string]string{
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"domain": domain,
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"name": name,
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"count24": fmt.Sprintf("%d", count24),
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"count7d": fmt.Sprintf("%d", count7d),
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"time": time.Now().Format("2006-01-02 15:04:05"),
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}
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return sendTemplateMail(conf.Security.SecurityAlertEmail, "【狼的提问箱】某箱主收到集中举报", templates.FS, "mail/abuse-alert.html", params)
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}
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// SendQuestionReportedMail 通知箱主「你的某条内容被多人举报」。
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//
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// 与给运维的告警不同：这封是给**箱主**的自查提醒，语气必须中性 ——
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// 明确写出「不代表平台已判定违规」，避免变成变相的处罚通知。
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func SendQuestionReportedMail(email, domain string, questionID uint, count int64, link string) error {
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params := map[string]string{
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"domain": domain,
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"question_id": fmt.Sprintf("%d", questionID),
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"count": fmt.Sprintf("%d", count),
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"link": link,
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"time": time.Now().Format("2006-01-02 15:04:05"),
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}
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return sendTemplateMail(email, "【狼的提问箱】你的内容被举报了", templates.FS, "mail/question-reported.html", params)
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}
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// RestrictionNotice 处置通知邮件的内容。
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//
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// 全部文案由调用方按「箱主自己的界面语言」预先翻译好再传进来：
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// 邮件模板本身是单语言的，而箱主的语言存在 users.language 里，只能在调用侧解析。
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//
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// 刻意不包含 --reason 原文：那是运维的审计备注（可能写得很直白），
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// 对外只用「级别 + 到期时间 + 规则链接」，与公告模板的口径一致。
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type RestrictionNotice struct {
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To string
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Heading string
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Greeting string
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Body string
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Note string
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RulesText string
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RulesURL string
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Appeal string
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}
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// SendRestrictionNoticeMail 告知箱主「你的提问箱已被限制」。
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func SendRestrictionNoticeMail(n RestrictionNotice) error {
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params := map[string]string{
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"heading": n.Heading,
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// time 由邮件包统一注入：调用方（CLI / 未来可能的自动流程）不必各自拼时间，
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// 也保证与其他通知邮件（question-reported / abuse-alert）的头部格式一致。
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"time": time.Now().Format("2006-01-02 15:04:05"),
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"greeting": n.Greeting,
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"body": n.Body,
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"note": n.Note,
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"rulesText": n.RulesText,
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"rulesURL": n.RulesURL,
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"appeal": n.Appeal,
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}
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return sendTemplateMail(n.To, n.Heading, templates.FS, "mail/restriction-notice.html", params)
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}
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func sendTemplateMail(email, title string, templateFS embed.FS, templatePath string, params map[string]string) error {
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var content bytes.Buffer
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t, err := template.ParseFS(templateFS, templatePath)
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if err != nil {
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return errors.Wrap(err, "parse template file")
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}
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params["year"] = time.Now().Format("2006")
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if err := t.Execute(&content, params); err != nil {
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return errors.Wrap(err, "execute template")
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}
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return sendMail(email, title, content.String())
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}
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func sendMail(to, title, content string) error {
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m := gomail.NewMessage()
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m.SetHeader("From", fmt.Sprintf("TamaBox <%s>", conf.Mail.Account))
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m.SetHeader("To", to)
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m.SetHeader("Subject", title)
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m.SetBody("text/html", content)
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d := gomail.NewDialer(
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conf.Mail.SMTP,
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conf.Mail.Port,
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conf.Mail.Account,
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conf.Mail.Password,
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)
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// 默认校验证书；仅当配置了 skip_tls_verify=true（自签名/内网 SMTP）时跳过。
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if conf.Mail.SkipTLSVerify {
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d.TLSConfig = &tls.Config{InsecureSkipVerify: true}
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}
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return d.DialAndSend(m)
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}
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