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52 lines
1.4 KiB
52 lines
1.4 KiB
5 years ago
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#ifndef HELPERS_H_
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#define HELPERS_H_
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#define _GNU_SOURCE
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#include <stdint.h>
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#include "types.h"
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#include "node.h"
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#include "message.h"
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#include "circ_buff.h"
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// Macros to turn a numeric macro into a string literal
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#define xstr(s) str(s)
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#define str(s) #s
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// AEMs file related definitions
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#define AEM_ID_LEN 4
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#define AEM_BUFFER_LEN 5
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// Format for fscanf() to read the AEM numbers
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#define AEM_LINE_FORMAT "%" xstr(AEM_ID_LEN) "s\n"
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node_id_t extract_id_from_ip(const ipv4_t ip);
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void set_timer_and_handler(void (*handler)(int), long int timer_interval);
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uint16_t create_message(char *new_message, uint16_t max_message_length,
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node_handle_t *neighbors, uint8_t num_neighbors, node_id_t own_id);
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int create_socket_and_listen(port_t port, uint8_t backlog_size);
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void send_message(node_handle_t peer, message_handle_t message);
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node_id_t accept_connection(int sock, address_t *client_name,
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fd_set *active_fd_set, int *listens_on);
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uint16_t checkAddNode(node_handle_t **neighbors, uint16_t num_neighbors ,
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address_t peer_name, node_id_t node_id);
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void write_to_peer(int filedes, const char *message);
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int read_from_peer(int file_des, uint16_t max_line,
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cbuf_handle_t *message_buffer, node_handle_t **neighbors,
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uint16_t num_neighbors);
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uint16_t fread_neighbors(char *AEM_file, node_handle_t **neighbors,
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port_t port);
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void init_sockaddr(address_t *peer_name, const ipv4_t hostname, port_t port);
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#endif //HELPERS_H_
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