homework: split out password cache logic into its own .c/.h file

Preparation for extending it further down the line.

1 files changed, 21 insertions, 0 deletions

diff --git a/src/home/homework-password-cache.h b/src/home/homework-password-cache.h
new file mode 100644
index 0000000000..6b4de15724
--- /dev/null
+++ b/src/home/homework-password-cache.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include "strv.h"
+#include "user-record.h"
+
+typedef struct PasswordCache {
+        /* Decoding passwords from security tokens is expensive and typically requires user interaction,
+         * hence cache any we already figured out. */
+        char **pkcs11_passwords;
+        char **fido2_passwords;
+} PasswordCache;
+
+void password_cache_free(PasswordCache *cache);
+
+static inline bool password_cache_contains(const PasswordCache *cache, const char *p) {
+        if (!cache)
+                return false;
+
+        return strv_contains(cache->pkcs11_passwords, p) || strv_contains(cache->fido2_passwords, p);
+}