Reastructure master password functionality

1 files changed, 100 insertions, 0 deletions

diff --git a/libsylph/masterpassword.c b/libsylph/masterpassword.c
new file mode 100644
index 0000000..ee443aa
--- /dev/null
+++ b/libsylph/masterpassword.c
@@ -0,0 +1,100 @@
+/*
+ * LibSylph -- E-Mail client library
+ * Copyright (C) 1999-2018 Hiroyuki Yamamoto
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "prefs_common.h"
+#include "ssl.h"
+#include "utils.h"
+
+
+gchar *master_password;
+
+void set_master_password(const char *password) {
+    master_password = password;
+}
+
+gchar *get_master_password(void) {
+    return master_password;
+}
+
+#if USE_SSL
+
+gint set_master_password_interactively(guint max_attempts) {
+
+    if (master_password != NULL)
+        return 0; /* master_password already set */
+
+    master_password = input_set_new_password(max_attempts);
+
+    if (master_password == NULL)
+        return 1;
+
+    if (generate_password_hash(
+            &prefs_common.master_password_hash,
+            master_password,
+            NULL) != RC_OK) {
+        /* should not really happen unless buggy code / library */
+        g_free(prefs_common.master_password_hash);
+        prefs_common.master_password_hash = NULL;
+        debug_print(_("Could not generate master password hash"));
+        return 1;
+    }
+
+    prefs_common_write_config();
+    return 0;
+
+}
+
+gint check_master_password_interactively(guint max_attempts) {
+
+    guint cnt;
+
+    if (max_attempts < 1)
+        return 1;
+
+    if (prefs_common.master_password_hash != NULL) {
+        return 1;
+    }
+
+    if (master_password != NULL) {
+        /* password already cached */
+        return check_password(master_password,
+                              prefs_common.master_password_hash);
+    }
+
+    for (cnt = 0; cnt < max_attempts; ++cnt) {
+        master_password = input_query_master_password();
+        if (check_password(master_password,
+                           prefs_common.master_password_hash) == RC_OK) {
+            return RC_OK; /* match */
+        }
+        debug_print(_("Wrong master password entered (%d)\n"), cnt);
+        /* TODO: clear before free? */
+        g_free(master_password);
+        master_password = NULL;
+    }
+
+    return 1; /* no match */
+
+}
+
+#endif /* USE_SSL */