1 files changed, 99 insertions, 0 deletions
diff --git a/src/imap/cmd-namespace.c b/src/imap/cmd-namespace.c
new file mode 100644
index 0000000..23d2286
--- /dev/null
+++ b/src/imap/cmd-namespace.c
@@ -0,0 +1,99 @@
+/* Copyright (c) 2003-2018 Dovecot authors, see the included COPYING file */
+
+#include "imap-common.h"
+#include "str.h"
+#include "imap-utf7.h"
+#include "imap-quote.h"
+#include "imap-commands.h"
+#include "mail-namespace.h"
+
+struct namespace_order {
+	int secondary_order;
+	struct mail_namespace *ns;
+};
+
+static int namespace_order_cmp(const struct namespace_order *no1,
+			       const struct namespace_order *no2)
+{
+	if (no1->ns->set->order < no2->ns->set->order)
+		return -1;
+	if (no1->ns->set->order > no2->ns->set->order)
+		return 1;
+
+	if (no1->secondary_order < no2->secondary_order)
+		return -1;
+	if (no1->secondary_order > no2->secondary_order)
+		return 1;
+	return 0;
+}
+
+static void list_namespaces(struct mail_namespace *ns,
+			    enum mail_namespace_type type, string_t *str)
+{
+	ARRAY(struct namespace_order) ns_order;
+	struct namespace_order *no;
+	unsigned int count = 0;
+	string_t *mutf7_prefix;
+	char ns_sep;
+
+	t_array_init(&ns_order, 4);
+
+	while (ns != NULL) {
+		if (ns->type == type &&
+		    (ns->flags & NAMESPACE_FLAG_HIDDEN) == 0) {
+			no = array_append_space(&ns_order);
+			no->ns = ns;
+			no->secondary_order = ++count;
+		}
+		ns = ns->next;
+	}
+
+	if (array_count(&ns_order) == 0) {
+		str_append(str, "NIL");
+		return;
+	}
+	array_sort(&ns_order, namespace_order_cmp);
+
+	mutf7_prefix = t_str_new(64);
+	str_append_c(str, '(');
+	array_foreach_modifiable(&ns_order, no) {
+		ns_sep = mail_namespace_get_sep(no->ns);
+		str_append_c(str, '(');
+
+		str_truncate(mutf7_prefix, 0);
+		if (imap_utf8_to_utf7(no->ns->prefix, mutf7_prefix) < 0) {
+			i_panic("LIST: Namespace prefix not UTF-8: %s",
+				no->ns->prefix);
+		}
+
+		imap_append_string(str, str_c(mutf7_prefix));
+		str_append(str, " \"");
+		if (ns_sep == '\\')
+			str_append_c(str, '\\');
+		str_append_c(str, ns_sep);
+		str_append(str, "\")");
+	}
+	str_append_c(str, ')');
+}
+
+bool cmd_namespace(struct client_command_context *cmd)
+{
+	struct client *client = cmd->client;
+	string_t *str;
+
+	str = t_str_new(256);
+	str_append(str, "* NAMESPACE ");
+
+	list_namespaces(client->user->namespaces,
+			MAIL_NAMESPACE_TYPE_PRIVATE, str);
+	str_append_c(str, ' ');
+	list_namespaces(client->user->namespaces,
+			MAIL_NAMESPACE_TYPE_SHARED, str);
+	str_append_c(str, ' ');
+	list_namespaces(client->user->namespaces,
+			MAIL_NAMESPACE_TYPE_PUBLIC, str);
+
+	client_send_line(client, str_c(str));
+	client_send_tagline(cmd, "OK Namespace completed.");
+	return TRUE;
+}