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e81ccc406b
Change all license headers to comply with REUSE specification. Fix #16132 Co-authored-by: flynnnnnnnnnn <flynnnnnnnnnn@github> Co-authored-by: John Olheiser <john.olheiser@gmail.com>
41 lines
1.6 KiB
Go
41 lines
1.6 KiB
Go
// Copyright 2022 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package public
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import "strings"
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// wellKnownMimeTypesLower comes from Golang's builtin mime package: `builtinTypesLower`, see the comment of detectWellKnownMimeType
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var wellKnownMimeTypesLower = map[string]string{
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".avif": "image/avif",
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".css": "text/css; charset=utf-8",
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".gif": "image/gif",
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".htm": "text/html; charset=utf-8",
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".html": "text/html; charset=utf-8",
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".jpeg": "image/jpeg",
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".jpg": "image/jpeg",
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".js": "text/javascript; charset=utf-8",
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".json": "application/json",
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".mjs": "text/javascript; charset=utf-8",
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".pdf": "application/pdf",
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".png": "image/png",
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".svg": "image/svg+xml",
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".wasm": "application/wasm",
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".webp": "image/webp",
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".xml": "text/xml; charset=utf-8",
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// well, there are some types missing from the builtin list
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".txt": "text/plain; charset=utf-8",
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}
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// detectWellKnownMimeType will return the mime-type for a well-known file ext name
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// The purpose of this function is to bypass the unstable behavior of Golang's mime.TypeByExtension
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// mime.TypeByExtension would use OS's mime-type config to overwrite the well-known types (see its document).
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// If the user's OS has incorrect mime-type config, it would make Gitea can not respond a correct Content-Type to browsers.
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// For example, if Gitea returns `text/plain` for a `.js` file, the browser couldn't run the JS due to security reasons.
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// detectWellKnownMimeType makes the Content-Type for well-known files stable.
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func detectWellKnownMimeType(ext string) string {
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ext = strings.ToLower(ext)
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return wellKnownMimeTypesLower[ext]
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}
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