casibase/routers/filter.go

114 lines
3.3 KiB
Go

// Copyright 2023 The casbin Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package routers
import (
"fmt"
"net/http"
"strings"
"github.com/astaxie/beego"
"github.com/astaxie/beego/context"
"github.com/casbin/casibase/conf"
"github.com/casbin/casibase/controllers"
"github.com/casbin/casibase/util"
)
const (
headerAllowOrigin = "Access-Control-Allow-Origin"
headerAllowMethods = "Access-Control-Allow-Methods"
headerAllowHeaders = "Access-Control-Allow-Headers"
)
func TransparentStatic(ctx *context.Context) {
urlPath := ctx.Request.URL.Path
if strings.HasPrefix(urlPath, "/api/") {
return
}
landingFolder := beego.AppConfig.String("landingFolder")
if landingFolder != "" {
if urlPath == "" || urlPath == "/" || urlPath == "/about" {
http.ServeFile(ctx.ResponseWriter, ctx.Request, fmt.Sprintf("../%s/web/build/index.html", landingFolder))
return
}
landingPath := fmt.Sprintf("../%s/web/build%s", landingFolder, urlPath)
if util.FileExist(landingPath) {
http.ServeFile(ctx.ResponseWriter, ctx.Request, landingPath)
return
}
}
if strings.HasPrefix(urlPath, "/storage") {
ctx.Output.Header(headerAllowOrigin, "*")
ctx.Output.Header(headerAllowMethods, "POST, GET, OPTIONS, DELETE")
ctx.Output.Header(headerAllowHeaders, "Content-Type, Authorization")
urlPath = strings.TrimPrefix(urlPath, "/storage/")
urlPath = strings.Replace(urlPath, "|", ":", 1)
http.ServeFile(ctx.ResponseWriter, ctx.Request, urlPath)
return
}
path := "web/build"
if urlPath == "/" {
path += "/index.html"
} else {
path += urlPath
}
if util.FileExist(path) {
http.ServeFile(ctx.ResponseWriter, ctx.Request, path)
} else {
http.ServeFile(ctx.ResponseWriter, ctx.Request, "web/build/index.html")
}
}
func ApiFilter(ctx *context.Context) {
method := ctx.Request.Method
urlPath := getUrlPath(ctx.Request.URL.Path)
if conf.IsDemoMode() {
if !isAllowedInDemoMode(method, urlPath) {
controllers.DenyRequest(ctx)
}
}
}
func getUrlPath(urlPath string) string {
if strings.HasPrefix(urlPath, "/cas") && (strings.HasSuffix(urlPath, "/serviceValidate") || strings.HasSuffix(urlPath, "/proxy") || strings.HasSuffix(urlPath, "/proxyValidate") || strings.HasSuffix(urlPath, "/validate") || strings.HasSuffix(urlPath, "/p3/serviceValidate") || strings.HasSuffix(urlPath, "/p3/proxyValidate") || strings.HasSuffix(urlPath, "/samlValidate")) {
return "/cas"
}
if strings.HasPrefix(urlPath, "/api/login/oauth") {
return "/api/login/oauth"
}
if strings.HasPrefix(urlPath, "/api/webauthn") {
return "/api/webauthn"
}
return urlPath
}
func isAllowedInDemoMode(method string, urlPath string) bool {
if method == "POST" && !(strings.HasPrefix(urlPath, "/api/signin") || urlPath == "/api/signout") {
return false
}
return true
}