wixl: implement stable UUID generation

Note that the UUIDs are *not* compatible with WiX!

2 files changed, 41 insertions, 1 deletions

diff --git a/tools/wixl/builder.vala b/tools/wixl/builder.vala
index bb5510b..fc511d9 100644
--- a/tools/wixl/builder.vala
+++ b/tools/wixl/builder.vala
@@ -324,6 +324,26 @@ namespace Wixl {
             SHARED,
         }
 
+        /* Namespace UUID: {de73ba5a-ed96-4a66-ba1b-fbb44e659ad7} */
+        private static string uuid_namespace =
+            "\xde\x73\xba\x5a\xed\x96\x4a\x66\xba\x1b\xfb\xb4\x4e\x65\x9a\xd7";
+
+        private static string uuid_from_name(string s) {
+            var cs = new Checksum (ChecksumType.SHA1);
+            uint8 buffer[20];
+            size_t buflen = buffer.length;
+            
+            cs.update (uuid_namespace.data, 16);
+            cs.update (s.data, s.length);
+            cs.get_digest (buffer, ref buflen);
+
+            return "{%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X}".
+                printf(buffer[0], buffer[1], buffer[2], buffer[3],
+                        buffer[4], buffer[5], (buffer[6] & 15) | 0x50, buffer[7],
+                        (buffer[8] & 0x3F) | 0x80, buffer[9], buffer[10], buffer[11],
+                        buffer[12], buffer[13], buffer[14], buffer[15]);
+        }
+
         public override void visit_component (WixComponent comp) throws GLib.Error {
             var attr = 0;
 
@@ -331,8 +351,14 @@ namespace Wixl {
                 attr |= ComponentAttribute.REGISTRY_KEY_PATH;
 
             var parent = resolve<WixDirectory> (comp.parent);
+            string uuid;
+
             // FIXME: stable uuid generation based on ns/dir/path
-            var uuid = get_uuid (comp.Guid);
+            if (comp.Guid == "*")
+                uuid = uuid_from_name (comp.full_path (this));
+            else
+                uuid = get_uuid (comp.Guid);
+
             db.table_component.add (comp.Id, uuid, parent.Id, attr,
                                     comp.key != null ? comp.key.Id : null);
 
diff --git a/tools/wixl/wix.vala b/tools/wixl/wix.vala
index 205721b..c6897d8 100644
--- a/tools/wixl/wix.vala
+++ b/tools/wixl/wix.vala
@@ -147,6 +147,20 @@ namespace Wixl {
             return array;
         }
 
+        public string full_path (WixResolver r) throws GLib.Error {
+            WixDirectory dir = null;
+
+            if (parent != null && parent is WixDirectory)
+                dir = this.parent as WixDirectory;
+            else if (parent != null && parent is WixDirectoryRef)
+                dir = r.resolve<WixDirectory> (this.parent);
+
+            if (dir != null)
+                return dir.full_path (r) + "/" + this.Id;
+            else
+                return this.Id;
+        }
+
         public G[] get_elements<G> () {
             return add_elements<G> ({});
         }