/*
 * This file is part of blabouncer (https://www.blatech.co.uk/l_bratch/blabouncer).
 * Copyright (C) 2019 Luke Bratch <luke@bratch.co.uk>.
 *
 * Blabouncer is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, version 3.
 *
 * Blabouncer 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with blabouncer. If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef FUNCTIONS_H_INCLUDED
#define FUNCTIONS_H_INCLUDED

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <netdb.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <sys/select.h>
#include <stdarg.h>
#include <limits.h>

#define MAXDATASIZE 513 // max number of bytes we can get at once (RFC2812 says 512, plus one for null terminator)

// getstdin() return codes
#define OK       0
#define NO_INPUT 1
#define TOO_LONG 2

#define DEBUG_CRIT 0
#define DEBUG_SOME 1
#define DEBUG_FULL 2

// Write debug string to file.
// Debug level is provided by level, set to one of DEBUG_CRIT, DEBUG_SOME or DEBUG_FULL.
// Debug is only written if the global int "debug" is greater than or equal to the level.
void debugprint(int level, char *format, ...);

// Get stdin line with buffer overrun protection
int getstdin(char *prompt, char *buff, size_t sz);

// Append CR-LF to the end of a string (after cleaning up any existing trailing CR or LF)
void appendcrlf(char *string);

// Remove leading colon ':' which is the starting character of a prefix in an IRC message
void stripprefix(char *string);

// Extract final parameter from IRC message, removing the leading colon ':'
void extractfinalparameter(char *string);

// Extract the IRC nick from a prefix
void extractnickfromprefix(char *string);

// Update an existing nickuserhost string with a new nick
void updatenickuserhost(char *nickuserhost, char *nick);

// Update an existing 001 greeting with a new nickuserhost
void updategreetings(char *greeting001, char *greeting002, char *greeting003, char *greeting004, char *greeting005a, char *greeting005b, char *greeting005c, char *newnickuserhost, char *oldnickuserhost, char *newnick, char *oldnick);

#endif