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