woodpecker/server/router/middleware/header/header.go

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// Copyright 2018 Drone.IO Inc.
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//
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// 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
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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
// 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.
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package header
import (
"net/http"
"time"
"github.com/gin-gonic/gin"
)
// NoCache is a middleware function that appends headers
// to prevent the client from caching the HTTP response.
func NoCache(c *gin.Context) {
c.Header("Cache-Control", "no-cache, no-store, max-age=0, must-revalidate, value")
c.Header("Expires", "Thu, 01 Jan 1970 00:00:00 GMT")
c.Header("Last-Modified", time.Now().UTC().Format(http.TimeFormat))
c.Next()
}
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// Options is a middleware function that appends headers
// for options requests and aborts then exits the middleware
// chain and ends the request.
func Options(c *gin.Context) {
if c.Request.Method != "OPTIONS" {
c.Next()
} else {
c.Header("Access-Control-Allow-Origin", "*")
c.Header("Access-Control-Allow-Methods", "GET,POST,PUT,PATCH,DELETE,OPTIONS")
c.Header("Access-Control-Allow-Headers", "authorization, origin, content-type, accept")
c.Header("Allow", "HEAD,GET,POST,PUT,PATCH,DELETE,OPTIONS")
c.Header("Content-Type", "application/json")
c.AbortWithStatus(200)
}
}
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// Secure is a middleware function that appends security
// and resource access headers.
func Secure(c *gin.Context) {
c.Header("Access-Control-Allow-Origin", "*")
c.Header("X-Frame-Options", "DENY")
c.Header("X-Content-Type-Options", "nosniff")
c.Header("X-XSS-Protection", "1; mode=block")
if c.Request.TLS != nil {
c.Header("Strict-Transport-Security", "max-age=31536000")
}
// Also consider adding Content-Security-Policy headers
// c.Header("Content-Security-Policy", "script-src 'self' https://cdnjs.cloudflare.com")
}