邮箱正则判断

config/config.go

@@ -45,12 +45,14 @@ type EmailConfig struct {
 	Enable      bool       `toml:"enable" comment:"注册验证邮件，且允许使用邮箱找回账号"`
 	Smtp        []SmtpUser `toml:"smtp"`
 	AllowDomain []string   `toml:"allow_domain" comment:"允许用于注册的邮箱域名，留空则允许全部"`
+	EmailReg    string     `toml:"email_reg" comment:"邮箱正则，留空则不处理，如 ^[0-9]+@qq.com$|^[^+\\.A-Z]+@gmail.com$"`
+	EmailRegMsg string     `toml:"email_reg_msg" comment:"不满足要求时的提示信息"`
 }
 
 type SmtpUser struct {
 	Host string `toml:"host"`
 	Port int    `toml:"port"`
-	SSL  bool   `toml:"SSL"`
+	SSL  bool   `toml:"SSL" comment:"启用 ssl"`
 	Name string `toml:"name"`
 	Pass string `toml:"password"`
 }
@@ -82,5 +84,9 @@ func Default() Config {
 		WebBaseUrl:     "",
 		ServerName:     "没有设置名字",
 		Captcha:        Captcha{},
+		Email: EmailConfig{
+			Smtp:        []SmtpUser{},
+			AllowDomain: []string{},
+		},
 	}
 }

frontend/src/apis/model.ts

@@ -42,6 +42,8 @@ export interface ApiConfig {
     serverName: string
     NeedEmail: boolean
     AllowDomain: string[]
+    EmailReg: string
+    EmailRegMsg: string
 }
 
 export interface UserInfo {

frontend/src/views/SendEmail.tsx

@@ -77,6 +77,11 @@ export default function SendEmail({ title, anyEmail = false, sendService }: { ti
             setHelperText("邮箱格式错误")
             return
         }
+        if (!anyEmail && server.data?.EmailReg && server.data?.EmailReg != ""
+            && !new RegExp(server.data?.EmailReg).test(sendEmail)) {
+            setHelperText(server.data?.EmailRegMsg ?? "邮箱不满足正则要求")
+            return
+        }
 
         if (server.data?.captcha.type != "" && captchaToken == "") {
             return

handle/user.go

@@ -3,11 +3,15 @@ package handle
 import (
 	"bytes"
 	"context"
+	"errors"
 	"fmt"
 	"image/png"
 	"io"
 	"log/slog"
 	"net/http"
+	"regexp"
+	"strings"
+	"sync"
 
 	"github.com/go-chi/chi/v5"
 	"github.com/go-playground/validator/v10"
@@ -25,10 +29,16 @@ type UserHandel struct {
 	logger         *slog.Logger
 	textureService *service.TextureService
 	config         config.Config
+
+	emailReg func() (*regexp.Regexp, error)
 }
 
 func NewUserHandel(handleError *handelerror.HandleError, validate *validator.Validate,
 	userService *service.UserService, logger *slog.Logger, textureService *service.TextureService, config config.Config) *UserHandel {
+	emailReg := sync.OnceValues[*regexp.Regexp, error](func() (*regexp.Regexp, error) {
+		return regexp.Compile(config.Email.EmailReg)
+	})
+
 	return &UserHandel{
 		handleError:    handleError,
 		validate:       validate,
@@ -36,6 +46,8 @@ func NewUserHandel(handleError *handelerror.HandleError, validate *validator.Val
 		logger:         logger,
 		textureService: textureService,
 		config:         config,
+
+		emailReg: emailReg,
 	}
 }
 
@@ -227,6 +239,8 @@ func (h *UserHandel) NeedEnableEmail(handle http.Handler) http.Handler {
 	})
 }
 
+var ErrNotAllowDomain = errors.New("不在允许域名列表内")
+
 func (h *UserHandel) SendRegEmail() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		ctx := r.Context()
@@ -235,6 +249,31 @@ func (h *UserHandel) SendRegEmail() http.HandlerFunc {
 			return
 		}
 
+		if len(h.config.Email.AllowDomain) != 0 {
+			allow := false
+			for _, v := range h.config.Email.AllowDomain {
+				if strings.HasSuffix(c.Email, v) {
+					allow = true
+					break
+				}
+			}
+			if !allow {
+				h.handleError.Error(ctx, w, "不在允许邮箱域名内", model.ErrInput, 400, slog.LevelDebug)
+				return
+			}
+		}
+		if h.config.Email.EmailReg != "" {
+			r, err := h.emailReg()
+			if err != nil {
+				h.handleError.Error(ctx, w, "正则错误", model.ErrUnknown, 500, slog.LevelError)
+				return
+			}
+			if !r.MatchString(c.Email) {
+				h.handleError.Error(ctx, w, "邮箱不符合正则要求", model.ErrInput, 400, slog.LevelDebug)
+				return
+			}
+		}
+
 		err := h.userService.SendRegEmail(ctx, c.Email, c.CaptchaToken, r.Host, ip)
 		if err != nil {
 			h.handleError.Service(ctx, w, err)

model/model.go

@@ -65,6 +65,8 @@ type Config struct {
 	ServerName      string `json:"serverName"`
 	NeedEmail       bool
 	AllowDomain     []string
+	EmailReg        string
+	EmailRegMsg     string
 }
 
 type EditUser struct {

service/user.go

@@ -238,22 +238,7 @@ func (w *UserService) ChangeName(ctx context.Context, newName string, t *model.T
 	return nil
 }
 
-var ErrNotAllowDomain = errors.New("不在允许域名列表内")
-
 func (w *UserService) SendRegEmail(ctx context.Context, email, CaptchaToken, host, ip string) error {
-	if len(w.config.Email.AllowDomain) != 0 {
-		allow := false
-		for _, v := range w.config.Email.AllowDomain {
-			if strings.HasSuffix(email, v) {
-				allow = true
-				break
-			}
-		}
-		if !allow {
-			return fmt.Errorf("SendRegEmail: %w", ErrNotAllowDomain)
-		}
-	}
-
 	err := w.captchaService.VerifyCaptcha(ctx, CaptchaToken, ip)
 	if err != nil {
 		return fmt.Errorf("SendRegEmail: %w", err)

service/web.go

@@ -37,5 +37,7 @@ func (w *WebService) GetConfig(ctx context.Context) model.Config {
 		AllowChangeName: !w.config.OfflineUUID,
 		NeedEmail:       w.config.Email.Enable,
 		AllowDomain:     w.config.Email.AllowDomain,
+		EmailReg:        w.config.Email.EmailReg,
+		EmailRegMsg:     w.config.Email.EmailRegMsg,
 	}
 }