httpcaddyfile: Add `auto_https` global option (#3284)

1 files changed, 16 insertions, 0 deletions

diff --git a/caddyconfig/httpcaddyfile/options.go b/caddyconfig/httpcaddyfile/options.go
index 49a11f6ee..cecb3d4b5 100644
--- a/caddyconfig/httpcaddyfile/options.go
+++ b/caddyconfig/httpcaddyfile/options.go
@@ -38,6 +38,7 @@ func init() {
 	RegisterGlobalOption("on_demand_tls", parseOptOnDemand)
 	RegisterGlobalOption("local_certs", parseOptTrue)
 	RegisterGlobalOption("key_type", parseOptSingleString)
+	RegisterGlobalOption("auto_https", parseOptAutoHTTPS)
 }
 
 func parseOptTrue(d *caddyfile.Dispenser) (interface{}, error) {
@@ -264,3 +265,18 @@ func parseOptOnDemand(d *caddyfile.Dispenser) (interface{}, error) {
 	}
 	return ond, nil
 }
+
+func parseOptAutoHTTPS(d *caddyfile.Dispenser) (interface{}, error) {
+	d.Next() // consume parameter name
+	if !d.Next() {
+		return "", d.ArgErr()
+	}
+	val := d.Val()
+	if d.Next() {
+		return "", d.ArgErr()
+	}
+	if val != "off" && val != "disable_redirects" {
+		return "", d.Errf("auto_https must be either 'off' or 'disable_redirects'")
+	}
+	return val, nil
+}