1 files changed, 53 insertions, 0 deletions
diff --git a/libs/libsignal/src/session_record.h b/libs/libsignal/src/session_record.h
new file mode 100644
index 0000000000..ec21d08a7a
--- /dev/null
+++ b/libs/libsignal/src/session_record.h
@@ -0,0 +1,53 @@
+#ifndef SESSION_RECORD_H
+#define SESSION_RECORD_H
+
+#include <stdint.h>
+#include <stddef.h>
+#include "signal_protocol_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int session_record_create(session_record **record, session_state *state, signal_context *global_context);
+int session_record_serialize(signal_buffer **buffer, const session_record *record);
+int session_record_deserialize(session_record **record, const uint8_t *data, size_t len, signal_context *global_context);
+int session_record_copy(session_record **record, session_record *other_record, signal_context *global_context);
+
+int session_record_has_session_state(session_record *record, uint32_t version, const ec_public_key *alice_base_key);
+session_state *session_record_get_state(session_record *record);
+void session_record_set_state(session_record *record, session_state *state);
+
+session_record_state_node *session_record_get_previous_states_head(const session_record *record);
+session_state *session_record_get_previous_states_element(const session_record_state_node *node);
+session_record_state_node *session_record_get_previous_states_next(const session_record_state_node *node);
+
+/**
+ * Removes the specified node in the previous states list.
+ * @param node the node to remove
+ * @return the node immediately following the removed node, or null if at the end of the list
+ */
+session_record_state_node *session_record_get_previous_states_remove(session_record *record, session_record_state_node *node);
+
+int session_record_is_fresh(session_record *record);
+
+/**
+ * Move the current session_state into the list of "previous" session states,
+ * and replace the current session_state with a fresh reset instance.
+ *
+ * @return 0 on success, negative on failure
+ */
+int session_record_archive_current_state(session_record *record);
+
+int session_record_promote_state(session_record *record, session_state *promoted_state);
+
+signal_buffer *session_record_get_user_record(const session_record *record);
+void session_record_set_user_record(session_record *record, signal_buffer *user_record);
+
+void session_record_destroy(signal_type_base *type);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* SESSION_RECORD_H */