2 files changed, 64 insertions, 0 deletions
diff --git a/pkg/context/context.go b/pkg/context/context.go
index 85f49cc6..33ae8b79 100644
--- a/pkg/context/context.go
+++ b/pkg/context/context.go
@@ -327,6 +327,8 @@ func Contexter() macaron.Handler {
 		c.Data["ShowFooterBranding"] = setting.ShowFooterBranding
 		c.Data["ShowFooterVersion"] = setting.ShowFooterVersion
 
+		c.Data["ServerNotice"] = readServerNotice()
+
 		ctx.Map(c)
 	}
 }
diff --git a/pkg/context/notice.go b/pkg/context/notice.go
new file mode 100644
index 00000000..e1bce474
--- /dev/null
+++ b/pkg/context/notice.go
@@ -0,0 +1,62 @@
+// 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"
+
+	"github.com/Unknwon/com"
+	log "gopkg.in/clog.v1"
+
+	"github.com/gogs/gogs/pkg/markup"
+	"github.com/gogs/gogs/pkg/setting"
+	"github.com/gogs/gogs/pkg/tool"
+)
+
+// readServerNotice checks if a notice file exists and loads the message to display
+// on all pages.
+func readServerNotice() string {
+	fpath := path.Join(setting.CustomPath, "notice.md")
+	if !com.IsExist(fpath) {
+		return ""
+	}
+
+	f, err := os.Open(fpath)
+	if err != nil {
+		log.Error(2, "Failed to open notice file %s: %v", fpath, err)
+		return ""
+	}
+	defer f.Close()
+
+	fi, err := f.Stat()
+	if err != nil {
+		log.Error(2, "Failed to stat notice file %s: %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.Error(2, "Notice file %s 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(2, "Failed to read notice file: %v", err)
+		return ""
+	}
+	buf = buf[:n]
+
+	if !tool.IsTextFile(buf) {
+		log.Error(2, "Notice file %s does not appear to be a text file: aborting", fpath)
+		return ""
+	}
+
+	return string(markup.RawMarkdown(buf, ""))
+}