1 files changed, 70 insertions, 0 deletions
diff --git a/src/utils.c b/src/utils.c
new file mode 100644
index 0000000..38a34de
--- /dev/null
+++ b/src/utils.c
@@ -0,0 +1,70 @@
+/* General Utility Functions */
+#include <lightdm.h>
+
+#include "app.h"
+#include "compat.h"
+#include "lightdm/session.h"
+#include "utils.h"
+#include "focus_ring.h"
+
+static gchar *get_session_key(gconstpointer data);
+
+
+/* Connect to the LightDM daemon or exit with an error */
+void connect_to_lightdm_daemon(LightDMGreeter *greeter)
+{
+    if (!lightdm_greeter_connect_sync(greeter, NULL)) {
+        g_critical("Could not connect to the LightDM daemon");
+    }
+}
+
+
+/* Begin authentication as the default user, or exit with an error */
+void begin_authentication_as_default_user(App *app)
+{
+    const gchar *default_user = APP_LOGIN_USER(app);
+    if (g_strcmp0(default_user, NULL) == 0) {
+        g_critical("A default user has not been not set");
+    } else {
+        g_message("Beginning authentication as the default user: %s",
+                  default_user);
+        compat_greeter_authenticate(app->greeter, default_user, NULL);
+    }
+}
+
+
+/* Remove every occurence of a character from a string */
+void remove_char(char *str, char garbage) {
+
+    char *src, *dst;
+    for (src = dst = str; *src != '\0'; src++) {
+        *dst = *src;
+        if (*dst != garbage) dst++;
+    }
+    *dst = '\0';
+}
+
+
+/* Get Sessions & Build the Focus Ring */
+void make_session_focus_ring(App *app)
+{
+    const gchar *default_session =
+            lightdm_greeter_get_default_session_hint(app->greeter);
+    const GList *sessions = lightdm_get_sessions();
+    FocusRing *session_ring = initialize_focus_ring(sessions, &get_session_key, "sessions");
+
+    if (default_session != NULL) {
+        focus_ring_scroll_to_value(session_ring, default_session);
+    }
+    g_message("Initial session set to: %s", focus_ring_get_value(session_ring));
+
+    app->session_ring = session_ring;
+}
+/* Retrieves the `key` field of a session, used to pull current session out of
+ * a FocusRing.
+ */
+static gchar *get_session_key(gconstpointer data)
+{
+    LightDMSession *session = (LightDMSession *) data;
+    return (gchar *) lightdm_session_get_key(session);
+}