mirror of
https://github.com/opencloud-eu/opencloud.git
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41 lines
1.2 KiB
Go
41 lines
1.2 KiB
Go
/*
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* Copyright 2017-2019 Kopano and its licensors
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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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*
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*/
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package utils
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import (
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"net/http"
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"net/url"
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)
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// OriginFromRequestHeaders tries to find information about the origin from the
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// provided http.Header. It first looks into the Origin header field and if that
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// is not found it looks into the Referer header field. If both are not found
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// an empty string is returned.
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func OriginFromRequestHeaders(header http.Header) string {
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origin := header.Get("Origin")
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if origin == "" {
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referer := header.Get("Referer")
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if referer != "" {
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refererURI, _ := url.Parse(referer)
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origin = refererURI.Scheme + "://" + refererURI.Host
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}
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}
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return origin
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}
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