Started adding node functionality.

include/nodes.h

@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2017  Ortega Froysa, Nicolás <deathsbreed@themusicinnoise.net>
+ * Author: Ortega Froysa, Nicolás <deathsbreed@themusicinnoise.net>
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation, either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+/**
+ * @brief Initialize the node list.
+ *
+ * @param max_nodes Maximum number of nodes available.
+ *
+ * @return If the operation failed then it will return 0, else it will
+ * return 1.
+ */
+int init_nodes(unsigned int max_nodes);
+
+/**
+ * @brief Enlarge the list.
+ *
+ * @param new_max_nodes New number of maximum nodes.
+ *
+ * @return If the new size is less than or equal to the current size, or
+ * the list failed to be reallocated, then it returns 0, else it returns 1.
+ */
+int resize_node_list(unsigned int new_max_nodes);
+
+/**
+ * @brief Get the maximum number of nodes that can be used.
+ *
+ * @return The maximum number of nodes that can be used..
+ */
+unsigned int get_node_max();
+
+/**
+ * @brief Get the number of nodes there currently are.
+ *
+ * @return The number of nodes remembered.
+ */
+unsigned int get_node_count();
+
+/**
+ * @brief Add a new node to the list with an address (normally IP) and port.
+ *
+ * @param addr Address of the new node (normally an IP, but also DNS).
+ * @param port Port number for new node.
+ *
+ * @return If the node list is full it will return 0, else 1.
+ */
+int add_node(char *addr, unsigned short port);
+
+int remove_node(char *addr, unsigned short port);