1 files changed, 81 insertions, 0 deletions
diff --git a/src/npassd/session.c b/src/npassd/session.c
new file mode 100644
index 0000000..e674bb7
--- /dev/null
+++ b/src/npassd/session.c
@@ -0,0 +1,81 @@
+#include <errno.h>
+#include <linux/limits.h>
+#include <pthread.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <systemd/sd-bus.h>
+
+#include "npassd/common.h"
+#include "npassd/session.h"
+#include "util.h"
+
+static int handle_close(__attribute__((unused)) sd_bus_message *msg, void *data,
+			__attribute__((unused)) sd_bus_error *ret_error);
+
+static const sd_bus_vtable session_vtable[] = {
+	SD_BUS_VTABLE_START(0),
+	SD_BUS_METHOD("Close", "", "", handle_close,
+		      SD_BUS_VTABLE_UNPRIVILEGED),
+	SD_BUS_VTABLE_END,
+};
+
+static int handle_close(__attribute__((unused)) sd_bus_message *msg, void *data,
+			__attribute__((unused)) sd_bus_error *ret_error)
+{
+	int ret;
+
+	ret = session_free((struct session *)data);
+	if (ret < 0)
+		print_err("Failed to free session: %s", strerror(-ret));
+
+	return ret;
+}
+
+int session_slot_available(struct session *s, size_t n)
+{
+	static pthread_mutex_t lock;
+
+	pthread_mutex_lock(&lock);
+	for (size_t i = 0; i < n; i++) {
+		if (s[i].isactive == false) {
+			pthread_mutex_unlock(&lock);
+			return i;
+		}
+	}
+
+	pthread_mutex_unlock(&lock);
+	return -ENOMEM;
+}
+
+int session_new(sd_bus *bus, struct session *session, unsigned session_no)
+{
+	int ret;
+
+	snprintf(session->path, sizeof(session->path),
+		 DBUS_OBJECT_PATH "/session/%d", session_no);
+	ret = sd_bus_add_object_vtable(bus, &session->slot, session->path,
+				       SESSION_IFACE, session_vtable, session);
+	if (ret < 0)
+		print_err("Failed to create session: %s", strerror(-ret));
+	else
+		session->isactive = true;
+
+	return ret;
+}
+
+int session_free(struct session *s)
+{
+	if (!s->isactive)
+		return -EINVAL;
+
+	s->isactive = false;
+	sd_bus_slot_unref(s->slot);
+
+	return 0;
+}
+
+void session_init(struct session *s, size_t n)
+{
+	for (size_t i = 0; i < n; i++)
+		s[i].isactive = false;
+}