2026-02-25 16:38:58 +08:00
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package captcha
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import (
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"context"
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"os"
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"strings"
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captcha20230305 "github.com/alibabacloud-go/captcha-20230305/client"
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openapi "github.com/alibabacloud-go/darabonba-openapi/v2/client"
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"github.com/alibabacloud-go/tea/tea"
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"github.com/pkg/errors"
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"github.com/zeromicro/go-zero/core/logx"
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"ycc-server/common/xerr"
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)
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2026-02-28 12:18:25 +08:00
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// 用于在 context 中传递 User-Agent 的 key(仅本包读取)
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type ctxKey struct{}
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var userAgentCtxKey = &ctxKey{}
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// WithUserAgent 将 User-Agent 写入 context,供 Verify 判断是否微信环境
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func WithUserAgent(ctx context.Context, userAgent string) context.Context {
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if ctx == nil {
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return ctx
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}
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return context.WithValue(ctx, userAgentCtxKey, userAgent)
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}
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// isWechatUserAgent 判断是否为微信内置浏览器(含小程序、H5)
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func isWechatUserAgent(ua string) bool {
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return strings.Contains(ua, "MicroMessenger")
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}
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// Config 验证码配置
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type Config struct {
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AccessKeyID string
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AccessKeySecret string
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EndpointURL string
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SceneID string
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}
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// Verify 验证阿里云滑块验证码。若 ctx 中带有 User-Agent 且为微信环境则跳过验证(默认成功)。
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func Verify(ctx context.Context, cfg Config, captchaVerifyParam string) error {
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// 开发环境跳过验证
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if os.Getenv("ENV") == "development" {
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logx.Info("[Captcha] 开发环境,跳过验证码校验")
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return nil
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}
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// 微信环境(内置浏览器/小程序)跳过图形验证码,不要求 captchaVerifyParam
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if ua, ok := ctx.Value(userAgentCtxKey).(string); ok && ua != "" && isWechatUserAgent(ua) {
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logx.Info("[Captcha] 微信环境,跳过图形验证码校验")
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return nil
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}
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// 检查参数
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if captchaVerifyParam == "" {
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return errors.Wrapf(xerr.NewErrMsg("图形验证码校验失败"), "empty captchaVerifyParam")
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}
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// 创建客户端配置
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clientCfg := &openapi.Config{
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AccessKeyId: tea.String(cfg.AccessKeyID),
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AccessKeySecret: tea.String(cfg.AccessKeySecret),
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}
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clientCfg.Endpoint = tea.String(cfg.EndpointURL)
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// 创建客户端
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client, err := captcha20230305.NewClient(clientCfg)
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if err != nil {
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logx.Errorf("[Captcha] 创建阿里云验证码客户端失败: %+v", err)
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// 客户端创建失败时,为了不影响业务可用性,记录日志但视为通过
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// 可根据风险偏好调整此策略
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return nil
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}
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// 构建验证请求
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req := &captcha20230305.VerifyIntelligentCaptchaRequest{
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SceneId: tea.String(cfg.SceneID),
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CaptchaVerifyParam: tea.String(captchaVerifyParam),
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}
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// 调用验证接口
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resp, err := client.VerifyIntelligentCaptcha(req)
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if err != nil {
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logx.Errorf("[Captcha] 调用阿里云验证码接口失败: %+v", err)
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// 接口调用失败时,为了不影响业务可用性,记录日志但视为通过
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// 可根据风险偏好调整此策略
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return nil
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}
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// 检查验证结果
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if resp == nil || resp.Body == nil || resp.Body.Result == nil {
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logx.Errorf("[Captcha] 阿里云验证码响应异常: resp=%+v", resp)
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return errors.Wrapf(xerr.NewErrMsg("图形验证码校验失败"), "invalid response")
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}
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if tea.BoolValue(resp.Body.Result.VerifyResult) {
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logx.Info("[Captcha] 验证码校验通过")
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return nil
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}
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// 验证失败
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logx.Errorf("[Captcha] 验证码校验失败: code=%s", tea.StringValue(resp.Body.Result.VerifyCode))
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return errors.Wrapf(xerr.NewErrMsg("图形验证码校验失败"), "verify failed: %s", tea.StringValue(resp.Body.Result.VerifyCode))
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}
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