From 655fc45da67a4cfa63d9d12cf106961a1afc12b9 Mon Sep 17 00:00:00 2001
From: Aki Tuomi <aki.tuomi@dovecot.fi>
Date: Sat, 16 Dec 2017 18:16:10 +0200
Subject: [PATCH] lib-storage: Add NO-FS-VALIDATION flag

---
 src/lib-storage/mailbox-list.c | 6 +++++-
 src/lib-storage/mailbox-list.h | 2 ++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/lib-storage/mailbox-list.c b/src/lib-storage/mailbox-list.c
index 5ca7c77d1b..c0121827dd 100644
--- a/src/lib-storage/mailbox-list.c
+++ b/src/lib-storage/mailbox-list.c
@@ -373,6 +373,9 @@ mailbox_list_settings_parse_full(struct mail_user *user, const char *data,
 		} else if (strcmp(key, "NO-NOSELECT") == 0) {
 			set_r->no_noselect = TRUE;
 			continue;
+		} else if (strcmp(key, "NO-FS-VALIDATION") == 0) {
+			set_r->no_fs_validation = TRUE;
+			continue;
 		} else {
 			*error_r = t_strdup_printf("Unknown setting: %s", key);
 			return -1;
@@ -1287,7 +1290,8 @@ mailbox_list_is_valid_fs_name(struct mailbox_list *list, const char *name,
 
 	*error_r = NULL;
 
-	if (list->mail_set->mail_full_filesystem_access)
+	if (list->mail_set->mail_full_filesystem_access ||
+	    list->set.no_fs_validation)
 		return TRUE;
 
 	/* either the list backend uses '/' as the hierarchy separator or
diff --git a/src/lib-storage/mailbox-list.h b/src/lib-storage/mailbox-list.h
index 5e26d5b631..eff2e4de13 100644
--- a/src/lib-storage/mailbox-list.h
+++ b/src/lib-storage/mailbox-list.h
@@ -160,6 +160,8 @@ struct mailbox_list_settings {
 	bool iter_from_index_dir;
 	/* Avoid creating or listing \NoSelect mailboxes. */
 	bool no_noselect;
+	/* Do not validate names as fs names (allows weird names) */
+	bool no_fs_validation;
 };
 
 struct mailbox_permissions {