Prefer the GUID from the firmware than the device

The firmware may be more generic, and it also allows us to match the GUID then
doing 'verify' on a device with a different device PID than the firmware
actually declares.

src/fu-provider-udev.c

@@ -169,18 +169,26 @@ fu_provider_udev_client_add (FuProviderUdev *provider_udev, GUdevDevice *device)
 				   rom_fn, error->message);
 		}
 		version = g_strdup (fu_rom_get_version (rom));
+
+		/* prefer the GUID from the firmware rather than the
+		 * hardware as the firmware may be more generic, which
+		 * also allows us to match the GUID when doing 'verify'
+		 * on a device with a different PID to the firmware */
+		guid_new = g_strdup (fu_rom_get_guid (rom));
 	}
 
 	/* we failed */
 	if (version == NULL)
 		return;
 
-	/* check the guid */
-	if (!fu_guid_is_valid (guid)) {
-		guid_new = fu_guid_generate_from_string (guid);
-		g_debug ("Fixing GUID %s->%s", guid, guid_new);
-	} else {
-		guid_new = g_strdup (guid);
+	/* no GUID from the ROM, so fix up the VID:PID */
+	if (guid_new == NULL) {
+		if (!fu_guid_is_valid (guid)) {
+			guid_new = fu_guid_generate_from_string (guid);
+			g_debug ("Fixing GUID %s->%s", guid, guid_new);
+		} else {
+			guid_new = g_strdup (guid);
+		}
 	}
 
 	/* did we get enough data */

src/fu-rom.c

@@ -28,6 +28,7 @@
 #include <string.h>
 
 #include "fu-cleanup.h"
+#include "fu-guid.h"
 #include "fu-rom.h"
 
 static void fu_rom_finalize			 (GObject *object);
@@ -68,6 +69,7 @@ struct _FuRomPrivate
 	GInputStream			*stream;
 	FuRomKind			 kind;
 	gchar				*version;
+	gchar				*guid;
 	guint16				 vendor;
 	guint16				 model;
 	GPtrArray			*hdrs; /* of FuRomPciHeader */
@@ -631,6 +633,7 @@ fu_rom_load_file (FuRom *rom, GFile *file, FuRomLoadFlags flags,
 	guint number_reads = 0;
 	_cleanup_error_free_ GError *error_local = NULL;
 	_cleanup_free_ gchar *fn = NULL;
+	_cleanup_free_ gchar *id = NULL;
 	_cleanup_free_ guint8 *buffer = NULL;
 	_cleanup_object_unref_ GFileOutputStream *output_stream = NULL;
 
@@ -817,6 +820,11 @@ fu_rom_load_file (FuRom *rom, GFile *file, FuRomLoadFlags flags,
 		g_checksum_update (priv->checksum_wip, hdr->rom_data, hdr->rom_len);
 	}
 
+	/* update guid */
+	id = g_strdup_printf ("0x%04x:0x%04x", priv->vendor, priv->model);
+	priv->guid = fu_guid_generate_from_string (id);
+	g_debug ("using %s for %s", priv->guid, id);
+
 	/* not known */
 	if (priv->version == NULL) {
 		g_set_error_literal (error,
@@ -849,6 +857,16 @@ fu_rom_get_version (FuRom *rom)
 	return rom->priv->version;
 }
 
+/**
+ * fu_rom_get_guid:
+ **/
+const gchar *
+fu_rom_get_guid (FuRom *rom)
+{
+	g_return_val_if_fail (FU_IS_ROM (rom), NULL);
+	return rom->priv->guid;
+}
+
 /**
  * fu_rom_get_vendor:
  **/
@@ -914,6 +932,7 @@ fu_rom_finalize (GObject *object)
 
 	g_checksum_free (priv->checksum_wip);
 	g_free (priv->version);
+	g_free (priv->guid);
 	g_ptr_array_unref (priv->hdrs);
 	if (priv->stream != NULL)
 		g_object_unref (priv->stream);

src/fu-rom.h

@@ -79,6 +79,7 @@ gboolean	 fu_rom_extract_all			(FuRom		*rom,
 FuRomKind	 fu_rom_get_kind			(FuRom		*rom);
 const gchar	*fu_rom_get_version			(FuRom		*rom);
 const gchar	*fu_rom_get_checksum			(FuRom		*rom);
+const gchar	*fu_rom_get_guid			(FuRom		*rom);
 guint16		 fu_rom_get_vendor			(FuRom		*rom);
 guint16		 fu_rom_get_model			(FuRom		*rom);
 const gchar	*fu_rom_kind_to_string			(FuRomKind	 kind);

src/fu-util.c

@@ -876,7 +876,6 @@ fu_util_verify_update (FuUtilPrivate *priv, gchar **values, GError **error)
 	as_store_set_api_version (store, 0.9);
 	for (i = 1; values[i] != NULL; i++) {
 		_cleanup_free_ gchar *guid = NULL;
-		_cleanup_free_ gchar *id = NULL;
 		_cleanup_object_unref_ AsApp *app = NULL;
 		_cleanup_object_unref_ AsRelease *rel = NULL;
 		_cleanup_object_unref_ FuRom *rom = NULL;
@@ -894,11 +893,7 @@ fu_util_verify_update (FuUtilPrivate *priv, gchar **values, GError **error)
 
 		/* add app to store */
 		app = as_app_new ();
-		id = g_strdup_printf ("0x%04x:0x%04x",
-				      fu_rom_get_vendor (rom),
-				      fu_rom_get_model (rom));
-		guid = fu_guid_generate_from_string (id);
-		as_app_set_id (app, guid, -1);
+		as_app_set_id (app, fu_rom_get_guid (rom), -1);
 		as_app_set_id_kind (app, AS_ID_KIND_FIRMWARE);
 		as_app_set_source_kind (app, AS_APP_SOURCE_KIND_INF);
 		rel = as_release_new ();