Add actual greetd functionality.

Useable, but very barebones — not even any error message reporting.

1 files changed, 43 insertions, 0 deletions

diff --git a/src/greetd.h b/src/greetd.h
new file mode 100644
index 0000000..3901d85
--- /dev/null
+++ b/src/greetd.h
@@ -0,0 +1,43 @@
+#ifndef GREETD_H
+#define GREETD_H
+
+#include <json-c/json_object.h>
+
+enum greetd_request_type {
+	GREETD_REQUEST_CREATE_SESSION,
+	GREETD_REQUEST_POST_AUTH_MESSAGE_RESPONSE,
+	GREETD_REQUEST_START_SESSION,
+	GREETD_REQUEST_CANCEL_SESSION
+};
+
+enum greetd_response_type {
+	GREETD_RESPONSE_INVALID,
+	GREETD_RESPONSE_SUCCESS,
+	GREETD_RESPONSE_ERROR,
+	GREETD_RESPONSE_AUTH_MESSAGE
+};
+
+enum greetd_auth_message_type {
+	GREETD_AUTH_MESSAGE_INVALID,
+	GREETD_AUTH_MESSAGE_VISIBLE,
+	GREETD_AUTH_MESSAGE_SECRET,
+	GREETD_AUTH_MESSAGE_INFO,
+	GREETD_AUTH_MESSAGE_ERROR
+};
+
+enum greetd_error_type {
+	GREETD_ERROR_INVALID,
+	GREETD_ERROR_AUTH_ERROR,
+	GREETD_ERROR_ERROR
+};
+
+[[nodiscard]] struct json_object *greetd_create_session(const char *username);
+[[nodiscard]] struct json_object *greetd_post_auth_message_response(const char *response);
+[[nodiscard]] struct json_object *greetd_start_session(const char *command);
+[[nodiscard]] struct json_object *greetd_cancel_session(void);
+
+enum greetd_response_type greetd_parse_response_type(struct json_object *response);
+enum greetd_auth_message_type greetd_parse_auth_message_type(struct json_object *response);
+enum greetd_error_type greetd_parse_error_type(struct json_object *response);
+
+#endif /* GREETD_H */