c-multiaddr/include/multiaddr/multiaddr.h
2017-04-03 11:54:15 -05:00

90 lines
2.5 KiB
C

#ifndef MULTIADDR
#define MULTIADDR
#include <string.h>
#include "varhexutils.h"
#include "varint.h"
#include "protocols.h"
#include "protoutils.h"
/**
* Normally, addresses have been represented using string addresses, like:
tcp4://127.0.0.1:1234
udp4://10.20.30.40:5060
ws://1.2.3.4:5678
tcp6://[1fff:0:a88:85a3::ac1f]:8001
This isn't optimal. Instead, addresses should be formatted so:
Binary format:
(varint proto><n byte addr>)+
<1 byte ipv4 code><4 byte ipv4 addr><1 byte udp code><2 byte udp port>
<1 byte ipv6 code><16 byte ipv6 addr><1 byte tcp code><2 byte tcp port>
String format:
(/<addr str code>/<addr str rep>)+
/ip4/<ipv4 str addr>/udp/<udp int port>
/ip6/<ipv6 str addr>/tcp/<tcp int port>
*/
struct MultiAddress
{
// A MultiAddress represented as a string
char* string;
// A MultiAddress represented as an array of bytes
//<varint proto><n byte addr><1 byte protocol code><4 byte ipv4 address or 16 byte ipv6 address><1 byte tcp/udp code><2 byte port>
uint8_t* bytes;
size_t bsize;
};
int strpos(char *haystack, char *needle);
struct MultiAddress* multiaddress_new_from_bytes(const uint8_t* byteaddress, int size); //Construct new address from bytes
struct MultiAddress* multiaddress_new_from_string(const char* straddress); //Construct new address from string
void multiaddress_free(struct MultiAddress* in);
struct MultiAddress* multiaddress_copy(const struct MultiAddress* source);
// helpers to parse the MultiAddress struct
int multiaddress_encapsulate(struct MultiAddress * result, char * string);
int multiaddress_decapsulate(struct MultiAddress * result, char * srci);
int multiaddress_is_ip(const struct MultiAddress* in);
int multiaddress_is_ip4(const struct MultiAddress* in);
int multiaddress_is_ip6(const struct MultiAddress* in);
int multiaddress_get_ip_family(const struct MultiAddress* in);
/***
* Pulls the textual representation of the IP address from a multihash
* @param in the multihash to parse
* @param ip where to put the ip address
* @returns true(1) on success, otherwise 0
*/
int multiaddress_get_ip_address(const struct MultiAddress* in, char** ip);
/***
* Pulls the IP port from a multiaddress
* @param in the multiaddress
* @param port where to put the port
* @returns the port, or a negative number for an error
*/
int multiaddress_get_ip_port(const struct MultiAddress* in);
/**
* Pulls the peer ID out of a multiaddress struct
* @param in the MultiAddress
* @returns a pointer to the peer id string, or NULL
*/
char* multiaddress_get_peer_id(const struct MultiAddress* in);
#endif