150 lines
3.3 KiB
Go
150 lines
3.3 KiB
Go
package api
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import (
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"fmt"
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"net"
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"regexp"
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"strings"
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"time"
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"next-terminal/server/constant"
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"next-terminal/server/global"
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"next-terminal/server/utils"
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"github.com/labstack/echo/v4"
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)
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func ErrorHandler(next echo.HandlerFunc) echo.HandlerFunc {
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return func(c echo.Context) error {
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if err := next(c); err != nil {
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if he, ok := err.(*echo.HTTPError); ok {
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message := fmt.Sprintf("%v", he.Message)
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return Fail(c, he.Code, message)
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}
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return Fail(c, 0, err.Error())
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}
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return nil
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}
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}
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func TcpWall(next echo.HandlerFunc) echo.HandlerFunc {
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return func(c echo.Context) error {
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if global.Securities == nil {
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return next(c)
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}
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ip := c.RealIP()
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for i := 0; i < len(global.Securities); i++ {
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security := global.Securities[i]
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if strings.Contains(security.IP, "/") {
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// CIDR
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_, ipNet, err := net.ParseCIDR(security.IP)
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if err != nil {
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continue
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}
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if !ipNet.Contains(net.ParseIP(ip)) {
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continue
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}
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} else if strings.Contains(security.IP, "-") {
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// 范围段
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split := strings.Split(security.IP, "-")
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if len(split) < 2 {
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continue
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}
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start := split[0]
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end := split[1]
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intReqIP := utils.IpToInt(ip)
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if intReqIP < utils.IpToInt(start) || intReqIP > utils.IpToInt(end) {
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continue
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}
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} else {
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// IP
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if security.IP != ip {
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continue
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}
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}
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if security.Rule == constant.AccessRuleAllow {
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return next(c)
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}
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if security.Rule == constant.AccessRuleReject {
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if c.Request().Header.Get("X-Requested-With") != "" || c.Request().Header.Get(Token) != "" {
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return Fail(c, 0, "您的访问请求被拒绝 :(")
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} else {
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return c.HTML(666, "您的访问请求被拒绝 :(")
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}
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}
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}
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return next(c)
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}
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}
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func Auth(next echo.HandlerFunc) echo.HandlerFunc {
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startWithUrls := []string{"/login", "/static", "/favicon.ico", "/logo.svg", "/asciinema"}
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download := regexp.MustCompile(`^/sessions/\w{8}(-\w{4}){3}-\w{12}/download`)
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recording := regexp.MustCompile(`^/sessions/\w{8}(-\w{4}){3}-\w{12}/recording`)
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return func(c echo.Context) error {
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uri := c.Request().RequestURI
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if uri == "/" || strings.HasPrefix(uri, "/#") {
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return next(c)
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}
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// 路由拦截 - 登录身份、资源权限判断等
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for i := range startWithUrls {
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if strings.HasPrefix(uri, startWithUrls[i]) {
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return next(c)
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}
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}
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if download.FindString(uri) != "" {
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return next(c)
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}
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if recording.FindString(uri) != "" {
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return next(c)
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}
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token := GetToken(c)
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cacheKey := BuildCacheKeyByToken(token)
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authorization, found := global.Cache.Get(cacheKey)
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if !found {
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return Fail(c, 401, "您的登录信息已失效，请重新登录后再试。")
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}
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if authorization.(Authorization).Remember {
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// 记住登录有效期两周
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global.Cache.Set(cacheKey, authorization, time.Hour*time.Duration(24*14))
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} else {
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global.Cache.Set(cacheKey, authorization, time.Hour*time.Duration(2))
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}
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return next(c)
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}
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}
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func Admin(next echo.HandlerFunc) echo.HandlerFunc {
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return func(c echo.Context) error {
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account, found := GetCurrentAccount(c)
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if !found {
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return Fail(c, 401, "您的登录信息已失效，请重新登录后再试。")
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}
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if account.Type != constant.TypeAdmin {
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return Fail(c, 403, "permission denied")
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}
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return next(c)
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}
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}
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