trust: Implement reloading of token data

 * Reload token data whenever a new session is opened.
 * Only reload files/directories that have changed.
 * Move duplicate anchor/blacklist detection logic into
   the extract code. This is in line with the approach
   being discussed on the mailing lists and spec document.
 * New internal attribute CKA_X_ORIGIN set on all objects
   so we can track where an object came from, and replace
   it when reloaded.

In general this is a prerequisite for modification of objects
reload before modify is necessary to prevent multiple callers
clobbering each other's changes.

1 files changed, 75 insertions, 0 deletions

diff --git a/trust/tests/test-trust.c b/trust/tests/test-trust.c
index 33ba19e..fceaea7 100644
--- a/trust/tests/test-trust.c
+++ b/trust/tests/test-trust.c
@@ -324,3 +324,78 @@ test_check_directory_msg (const char *file,
 
 	p11_dict_free (files);
 }
+
+void
+test_write_file_msg (const char *file,
+                     int line,
+                     const char *function,
+                     const char *directory,
+                     const char *name,
+                     const void *contents,
+                     size_t length)
+{
+	char *path;
+	FILE *f;
+
+	if (asprintf (&path, "%s/%s", directory, name) < 0)
+		assert_not_reached ();
+
+	f = fopen (path, "wb");
+	if (f == NULL) {
+		p11_test_fail (file, line, function, "Couldn't open file for writing: %s: %s",
+		               path, strerror (errno));
+	}
+
+	if (fwrite (contents, 1, length, f) != length ||
+	    fclose (f) != 0) {
+		p11_test_fail (file, line, function, "Couldn't write file: %s: %s",
+		               path, strerror (errno));
+	}
+
+	free (path);
+}
+
+void
+test_delete_file_msg (const char *file,
+                      int line,
+                      const char *function,
+                      const char *directory,
+                      const char *name)
+{
+	char *path;
+
+	if (asprintf (&path, "%s/%s", directory, name) < 0)
+		assert_not_reached ();
+
+	if (unlink (path) < 0)
+		p11_test_fail (file, line, function, "Couldn't delete file: %s", path);
+
+	free (path);
+}
+
+void
+test_delete_directory_msg (const char *file,
+                           int line,
+                           const char *function,
+                           const char *directory)
+{
+	struct dirent *dp;
+	DIR *dir;
+
+	dir = opendir (directory);
+	if (dir == NULL)
+		p11_test_fail (file ,line, function, "Couldn't open directory: %s", directory);
+
+	while ((dp = readdir (dir)) != NULL) {
+		if (strcmp (dp->d_name, ".") == 0 ||
+		    strcmp (dp->d_name, "..") == 0)
+			continue;
+
+		test_delete_file_msg (file, line, function, directory, dp->d_name);
+	}
+
+	closedir (dir);
+
+	if (rmdir (directory) < 0)
+		p11_test_fail (file, line, function, "Couldn't remove directory: %s", directory);
+}