separate frontend repository

api/utils.go

@@ -0,0 +1,88 @@
+package api
+
+import (
+	"net"
+	"net/http"
+	"s-ui/logger"
+	"strings"
+
+	"github.com/gin-gonic/gin"
+)
+
+type Msg struct {
+	Success bool        `json:"success"`
+	Msg     string      `json:"msg"`
+	Obj     interface{} `json:"obj"`
+}
+
+func getRemoteIp(c *gin.Context) string {
+	value := c.GetHeader("X-Forwarded-For")
+	if value != "" {
+		ips := strings.Split(value, ",")
+		return ips[0]
+	} else {
+		addr := c.Request.RemoteAddr
+		ip, _, _ := net.SplitHostPort(addr)
+		return ip
+	}
+}
+
+func getHostname(c *gin.Context) string {
+	host := c.Request.Host
+	if colonIndex := strings.LastIndex(host, ":"); colonIndex != -1 {
+		host, _, _ = net.SplitHostPort(c.Request.Host)
+	}
+	return host
+}
+
+func jsonMsg(c *gin.Context, msg string, err error) {
+	jsonMsgObj(c, msg, nil, err)
+}
+
+func jsonObj(c *gin.Context, obj interface{}, err error) {
+	jsonMsgObj(c, "", obj, err)
+}
+
+func jsonMsgObj(c *gin.Context, msg string, obj interface{}, err error) {
+	m := Msg{
+		Obj: obj,
+	}
+	if err == nil {
+		m.Success = true
+		if msg != "" {
+			m.Msg = msg
+		}
+	} else {
+		m.Success = false
+		m.Msg = msg + ": " + err.Error()
+		logger.Warning("failed :", err)
+	}
+	c.JSON(http.StatusOK, m)
+}
+
+func pureJsonMsg(c *gin.Context, success bool, msg string) {
+	if success {
+		c.JSON(http.StatusOK, Msg{
+			Success: true,
+			Msg:     msg,
+		})
+	} else {
+		c.JSON(http.StatusOK, Msg{
+			Success: false,
+			Msg:     msg,
+		})
+	}
+}
+
+func checkLogin(c *gin.Context) {
+	if !IsLogin(c) {
+		if c.GetHeader("X-Requested-With") == "XMLHttpRequest" {
+			pureJsonMsg(c, false, "Invalid login")
+		} else {
+			c.Redirect(http.StatusTemporaryRedirect, "/login")
+		}
+		c.Abort()
+	} else {
+		c.Next()
+	}
+}