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63 lines
2.1 KiB
Go
63 lines
2.1 KiB
Go
// Copyright 2018 Drone.IO Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package header
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import (
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"net/http"
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"time"
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"github.com/gin-gonic/gin"
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)
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// NoCache is a middleware function that appends headers
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// to prevent the client from caching the HTTP response.
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func NoCache(c *gin.Context) {
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c.Header("Cache-Control", "no-cache, no-store, max-age=0, must-revalidate, value")
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c.Header("Expires", "Thu, 01 Jan 1970 00:00:00 GMT")
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c.Header("Last-Modified", time.Now().UTC().Format(http.TimeFormat))
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c.Next()
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}
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// Options is a middleware function that appends headers
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// for options requests and aborts then exits the middleware
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// chain and ends the request.
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func Options(c *gin.Context) {
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if c.Request.Method != "OPTIONS" {
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c.Next()
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} else {
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c.Header("Access-Control-Allow-Origin", "*")
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c.Header("Access-Control-Allow-Methods", "GET,POST,PUT,PATCH,DELETE,OPTIONS")
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c.Header("Access-Control-Allow-Headers", "authorization, origin, content-type, accept")
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c.Header("Allow", "HEAD,GET,POST,PUT,PATCH,DELETE,OPTIONS")
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c.Header("Content-Type", "application/json")
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c.AbortWithStatus(200)
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}
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}
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// Secure is a middleware function that appends security
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// and resource access headers.
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func Secure(c *gin.Context) {
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c.Header("Access-Control-Allow-Origin", "*")
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c.Header("X-Frame-Options", "DENY")
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c.Header("X-Content-Type-Options", "nosniff")
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c.Header("X-XSS-Protection", "1; mode=block")
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if c.Request.TLS != nil {
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c.Header("Strict-Transport-Security", "max-age=31536000")
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}
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// Also consider adding Content-Security-Policy headers
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// c.Header("Content-Security-Policy", "script-src 'self' https://cdnjs.cloudflare.com")
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}
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