gentoo-overlay/app-arch/xarchiver/files/xarchiver-0.5.3-fix-rpm-support.patch

diff -Naur xarchiver-0.5.3.orig/src/rpm.c xarchiver-0.5.3/src/rpm.c
--- xarchiver-0.5.3.orig/src/rpm.c	2014-02-09 16:26:24.000000000 +0100
+++ xarchiver-0.5.3/src/rpm.c	2014-02-19 07:54:27.744136749 +0100
@@ -23,8 +23,11 @@
 
 void xa_open_rpm (XArchive *archive)
 {
+	unsigned char bytes[8];
 	unsigned short int i;
-    int response;
+    int dl,il,sigsize,offset,response;
+    gchar *ibs,*executable;
+    gchar *gzip_tmp = NULL;
 	GSList *list = NULL;
 	FILE *stream;
 	gboolean result;
@@ -53,14 +56,68 @@
 		archive->column_types[i] = types[i];
 
 	xa_create_liststore (archive,names);
+    if (fseek ( stream, 104 , SEEK_CUR ) )
+    {
+        fclose (stream);
+        response = xa_show_message_dialog (GTK_WINDOW (xa_main_window),GTK_DIALOG_MODAL,GTK_MESSAGE_ERROR,GTK_BUTTONS_OK,_("Can't fseek to position 104:"),g_strerror(errno));
+        return;
+    }
+    if ( fread ( bytes, 1, 8, stream ) == 0 )
+	{
+		fclose ( stream );
+		response = xa_show_message_dialog (GTK_WINDOW (xa_main_window),GTK_DIALOG_MODAL,GTK_MESSAGE_ERROR,GTK_BUTTONS_OK,_("Can't read data from file:"),g_strerror(errno));
+		return;
+    }
+    il = 256 * ( 256 * ( 256 * bytes[0] + bytes[1]) + bytes[2] ) + bytes[3];
+    dl = 256 * ( 256 * ( 256 * bytes[4] + bytes[5]) + bytes[6] ) + bytes[7];
+    sigsize = 8 + 16 * il + dl;
+    offset = 104 + sigsize + ( 8 - ( sigsize % 8 ) ) % 8 + 8;
+    if (fseek ( stream, offset  , SEEK_SET ) )
+    {
+        fclose (stream);
+        response = xa_show_message_dialog (GTK_WINDOW (xa_main_window),GTK_DIALOG_MODAL,GTK_MESSAGE_ERROR,GTK_BUTTONS_OK,_("Can't fseek in file:"),g_strerror(errno));
+        return;
+    }
+    if ( fread ( bytes, 1, 8, stream ) == 0 )
+	{
+		fclose ( stream );
+		response = xa_show_message_dialog (GTK_WINDOW (xa_main_window),GTK_DIALOG_MODAL,GTK_MESSAGE_ERROR,GTK_BUTTONS_OK,_("Can't read data from file:"),g_strerror(errno));
+		return;
+    }
+    il = 256 * ( 256 * ( 256 * bytes[0] + bytes[1]) + bytes[2] ) + bytes[3];
+    dl = 256 * ( 256 * ( 256 * bytes[4] + bytes[5]) + bytes[6] ) + bytes[7];
+	sigsize = 8 + 16 * il + dl;
+	offset = offset + sigsize;
+	fclose (stream);
 
 	/* Create a unique temp dir in /tmp */
 	result = xa_create_temp_directory (archive);
 	if (!result)
 		return;
 
+	gzip_tmp = g_strconcat (archive->tmp,"/file.gz_bz",NULL);
+	ibs = g_strdup_printf ( "%u" , offset );
+
 	/* Now I run dd to have the bzip2 / gzip compressed cpio archive in /tmp */
-	gchar *command = g_strconcat ( "sh -c \"rpm2cpio ",archive->escaped_path," > ",archive->tmp, "/file.cpio\"",NULL);
+	gchar *command = g_strconcat ( "dd if=",archive->escaped_path," ibs=",ibs," skip=1 of=",gzip_tmp,NULL);
+	g_free (ibs);
+	list = g_slist_append(list,command);
+	batch_mode = TRUE;
+	result = xa_run_command (archive,list);
+	if (result == FALSE)
+	{	
+		g_free (gzip_tmp);
+		return;
+	}
+	if (xa_detect_archive_type (gzip_tmp) == XARCHIVETYPE_GZIP)
+		executable = "gzip -dc ";
+	else if (xa_detect_archive_type (gzip_tmp) == XARCHIVETYPE_BZIP2)
+		executable = "bzip2 -dc ";
+	else
+		executable = "xz -dc ";
+
+	command = g_strconcat("sh -c \"",executable,gzip_tmp," > ",archive->tmp,"/file.cpio\"",NULL);
+	g_free(gzip_tmp);
 	list = NULL;
 	list = g_slist_append(list,command);
 	result = xa_run_command (archive,list);