forked from micro-plat/hydra
/
header.go
71 lines (65 loc) · 1.54 KB
/
header.go
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package middleware
import (
"net/http"
"strings"
"github.com/gin-gonic/gin"
"github.com/micro-plat/hydra/conf"
)
func setHeader(cnf *conf.MetadataConf, ctx *gin.Context) {
headers := getCrossHeader(cnf, ctx)
for k, v := range headers {
ctx.Header(k, strings.Join(v, ";"))
}
}
//Header 头设置
func Header(cnf *conf.MetadataConf) gin.HandlerFunc {
return func(ctx *gin.Context) {
if strings.ToUpper(ctx.Request.Method) != "OPTIONS" {
ctx.Next()
}
headers, ok := cnf.GetMetadata("headers").(conf.Headers)
if ok {
origin := ctx.Request.Header.Get("Origin")
for k, v := range headers {
if k != "Access-Control-Allow-Origin" { //非跨域设置
ctx.Header(k, v)
continue
}
if origin != "" && (v == "*" || strings.Contains(v, origin)) {
ctx.Header(k, origin)
}
}
}
context := getCTX(ctx)
if context == nil {
return
}
header := context.Response.GetHeaders()
for k, v := range header {
ctx.Header(k, v)
}
}
}
func getCrossHeader(cnf *conf.MetadataConf, ctx *gin.Context) http.Header {
h := make(map[string][]string)
origin := ctx.Request.Header.Get("Origin")
if origin == "" {
return nil
}
headers, ok := cnf.GetMetadata("headers").(conf.Headers)
if ok {
for k, v := range headers {
if strings.HasPrefix(k, "Access-Control-Allow") { //非跨域设置
if k != "Access-Control-Allow-Origin" { //非跨域设置
h[k] = []string{v}
continue
}
if v == "*" || strings.Contains(v, origin) {
h[k] = []string{origin}
}
continue
}
}
}
return h
}