Squashed 'external/toxcore/c-toxcore/' content from commit 67badf69

git-subtree-dir: external/toxcore/c-toxcore
git-subtree-split: 67badf69416a74e74f6d7eb51dd96f37282b8455

toxcore/friend_requests.h

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+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright © 2016-2018 The TokTok team.
+ * Copyright © 2014 Tox project.
+ */
+
+/**
+ * Handle friend requests.
+ */
+#ifndef C_TOXCORE_TOXCORE_FRIEND_REQUESTS_H
+#define C_TOXCORE_TOXCORE_FRIEND_REQUESTS_H
+
+#include "friend_connection.h"
+
+#define MAX_FRIEND_REQUEST_DATA_SIZE (ONION_CLIENT_MAX_DATA_SIZE - (1 + sizeof(uint32_t)))
+
+typedef struct Friend_Requests Friend_Requests;
+
+/** Set and get the nospam variable used to prevent one type of friend request spam. */
+non_null() void set_nospam(Friend_Requests *fr, uint32_t num);
+non_null() uint32_t get_nospam(const Friend_Requests *fr);
+
+/** @brief Remove real_pk from received_requests list.
+ *
+ * @retval 0 if it removed it successfully.
+ * @retval -1 if it didn't find it.
+ */
+non_null()
+int remove_request_received(Friend_Requests *fr, const uint8_t *real_pk);
+
+typedef void fr_friend_request_cb(void *object, const uint8_t *public_key, const uint8_t *message, size_t length,
+                                  void *user_data);
+
+/** Set the function that will be executed when a friend request for us is received. */
+non_null()
+void callback_friendrequest(Friend_Requests *fr, fr_friend_request_cb *function, void *object);
+
+typedef int filter_function_cb(const uint8_t *public_key, void *user_data);
+
+/** @brief Set the function used to check if a friend request should be displayed to the user or not.
+ * It must return 0 if the request is ok (anything else if it is bad).
+ */
+non_null()
+void set_filter_function(Friend_Requests *fr, filter_function_cb *function, void *userdata);
+
+/** Sets up friendreq packet handlers. */
+non_null()
+void friendreq_init(Friend_Requests *fr, Friend_Connections *fr_c);
+
+Friend_Requests *friendreq_new(void);
+
+nullable(1)
+void friendreq_kill(Friend_Requests *fr);
+
+#endif