c-multiaddr/include/multiaddr/protoutils.h

#ifndef PROTOUTILS
#define PROTOUTILS

//////////////////////////////////////////////////////////
char ASCII2bits(char ch);

void hex2bin (char *dst, char *src, int len);

char bits2ASCII(char b);

void bin2hex (char *dst, char *src, int len);

//////////////////////////////////////////////////////////
//IPv4 VALIDATOR
#define DELIM "."
 
/* return 1 if string contain only digits, else return 0 */
int valid_digit(char *ip_str);

/* return 1 if IP string is valid, else return 0 */
int is_valid_ipv4(char *ip_str);

//////////////IPv6 Validator
#define MAX_HEX_NUMBER_COUNT 8 

int ishexdigit(char ch);

int is_valid_ipv6(char *str);

uint64_t ip2int(const char * ipconvertint);

char * int2ip(int inputintip);

/**
 * Unserialize the bytes into a string
 * @param results where to put the resultant string
 * @param bytes the bytes to unserialize
 * @param bytes_size the length of the bytes array
 */
int bytes_to_string(char** results, const uint8_t* bytes, int bytes_size);

/**
 * Convert an address string to a byte representation
 * @param protocol the protocol to use
 * @param incoming the byte array
 * @param incoming_size the size of the byte array
 * @param results the results
 * @param results_size the size of the results
 * @returns the results array
 */
char * address_string_to_bytes(struct Protocol *protocol, const char *incoming, size_t incoming_size, char** results, int *results_size);

int string_to_bytes(uint8_t** finalbytes,size_t* realbbsize, const char * strx, size_t strsize);

#endif