+typedef struct _opkg_package_t opkg_package_t;
+typedef struct _opkg_progress_data_t opkg_progress_data_t;
+
+typedef void (*opkg_progress_callback_t) (opkg_t *opkg, const opkg_progress_data_t *progress, void *user_data);
+typedef void (*opkg_package_callback_t) (opkg_t *opkg, opkg_package_t *package, void *user_data);
+
+enum _opkg_action_t
+{
+ OPKG_INSTALL,
+ OPKG_REMOVE,
+ OPKG_DOWNLOAD
+};
+
+enum _opkg_error_code_t
+{
+ OPKG_NO_ERROR,
+ OPKG_UNKNOWN_ERROR,
+ OPKG_DOWNLOAD_FAILED,
+ OPKG_DEPENDENCIES_FAILED,
+ OPKG_PACKAGE_ALREADY_INSTALLED,
+ OPKG_PACKAGE_NOT_AVAILABLE,
+ OPKG_PACKAGE_NOT_FOUND,
+ OPKG_PACKAGE_NOT_INSTALLED,
+ OPKG_GPG_ERROR,
+ OPKG_MD5_ERROR,
+ OPKG_SHA256_ERROR
+};
+
+struct _opkg_package_t
+{
+ char *name;
+ char *version;
+ char *architecture;
+ char *repository;
+ char *description;
+ char *tags;
+ char *url;
+ int size;
+ int installed;
+};
+
+struct _opkg_progress_data_t
+{
+ int percentage;
+ int action;
+ opkg_package_t *package;
+};
+
+opkg_package_t* opkg_package_new ();
+void opkg_package_free (opkg_package_t *package);