From 453f415cc493e358c5cf0a7050e271059c51c072 Mon Sep 17 00:00:00 2001
From: Jesse Lang <jesse.lang@veritas.com>
Date: Tue, 19 Dec 2017 20:08:55 -0600
Subject: [PATCH] Validate DRONE_HOST to ensure it contains a scheme and not a
 trailing slash

---
 cmd/drone-server/server.go | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/cmd/drone-server/server.go b/cmd/drone-server/server.go
index d9c081ff8..02fc15078 100644
--- a/cmd/drone-server/server.go
+++ b/cmd/drone-server/server.go
@@ -477,6 +477,18 @@ func server(c *cli.Context) error {
 		logrus.Fatalln("DRONE_HOST is not properly configured")
 	}
 
+	if !strings.Contains(c.String("server-host"), "://") {
+		logrus.Fatalln(
+			"DRONE_HOST must be <scheme>://<hostname> format",
+		)
+	}
+
+	if !strings.HasSuffix(c.String("server-host"), "/") {
+		logrus.Fatalln(
+			"DRONE_HOST must not have trailing slash",
+		)
+	}
+
 	remote_, err := SetupRemote(c)
 	if err != nil {
 		logrus.Fatal(err)