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// Copyright 2019 The Gogs Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package context
import (
"os"
"path/filepath"
"github.com/unknwon/com"
log "unknwon.dev/clog/v2"
"gogs.io/gogs/internal/conf"
"gogs.io/gogs/internal/markup"
"gogs.io/gogs/internal/tool"
)
// renderNoticeBanner checks if a notice banner file exists and loads the message to display
// on all pages.
func (c *Context) renderNoticeBanner() {
fpath := filepath.Join(conf.CustomDir(), "notice", "banner.md")
if !com.IsExist(fpath) {
return
}
f, err := os.Open(fpath)
if err != nil {
log.Error("Failed to open file %q: %v", fpath, err)
return
}
defer f.Close()
fi, err := f.Stat()
if err != nil {
log.Error("Failed to stat file %q: %v", fpath, err)
return
}
// Limit size to prevent very large messages from breaking pages
var maxSize int64 = 1024
if fi.Size() > maxSize { // Refuse to print very long messages
log.Warn("Notice banner file %q size too large [%d > %d]: refusing to render", fpath, fi.Size(), maxSize)
return
}
buf := make([]byte, maxSize)
n, err := f.Read(buf)
if err != nil {
log.Error("Failed to read file %q: %v", fpath, err)
return
}
buf = buf[:n]
if !tool.IsTextFile(buf) {
log.Warn("Notice banner file %q does not appear to be a text file: aborting", fpath)
return
}
c.Data["ServerNotice"] = string(markup.RawMarkdown(buf, ""))
}
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