httpcaddyfile: Global storage configuration (closes #2758)

1 files changed, 49 insertions, 0 deletions

diff --git a/modules/filestorage/filestorage.go b/modules/filestorage/filestorage.go
new file mode 100644
index 0000000..654dbb2
--- /dev/null
+++ b/modules/filestorage/filestorage.go
@@ -0,0 +1,49 @@
+package filestorage
+
+import (
+	"github.com/caddyserver/caddy/v2"
+	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
+	"github.com/mholt/certmagic"
+)
+
+func init() {
+	caddy.RegisterModule(FileStorage{})
+}
+
+// FileStorage is a certmagic.Storage wrapper for certmagic.FileStorage.
+type FileStorage struct {
+	Root string `json:"root,omitempty"`
+}
+
+// CaddyModule returns the Caddy module information.
+func (FileStorage) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "caddy.storage.file_system",
+		New:  func() caddy.Module { return new(FileStorage) },
+	}
+}
+
+// CertMagicStorage converts s to a certmagic.Storage instance.
+func (s FileStorage) CertMagicStorage() (certmagic.Storage, error) {
+	return &certmagic.FileStorage{Path: s.Root}, nil
+}
+
+// UnmarshalCaddyfile sets up the storage module from Caddyfile tokens.
+func (s *FileStorage) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
+	if !d.Next() {
+		return d.Err("expected tokens")
+	}
+	for nesting := d.Nesting(); d.NextBlock(nesting); {
+		if !d.NextArg() {
+			return d.ArgErr()
+		}
+		s.Root = d.Val()
+		if d.NextArg() {
+			return d.ArgErr()
+		}
+	}
+	return nil
+}
+
+// Interface guard
+var _ caddy.StorageConverter = (*FileStorage)(nil)