mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2025-01-13 08:20:03 +00:00
278 lines
8.2 KiB
C++
278 lines
8.2 KiB
C++
/*
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* Copyright (c)2019 ZeroTier, Inc.
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*
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* Use of this software is governed by the Business Source License included
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* in the LICENSE.TXT file in the project's root directory.
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*
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* Change Date: 2026-01-01
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*
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* On the date above, in accordance with the Business Source License, use
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* of this software will be governed by version 2.0 of the Apache License.
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*/
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/****/
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#ifndef ZT_CERTIFICATEOFOWNERSHIP_HPP
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#define ZT_CERTIFICATEOFOWNERSHIP_HPP
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#include "Address.hpp"
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#include "Buffer.hpp"
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#include "Constants.hpp"
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#include "Credential.hpp"
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#include "ECC.hpp"
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#include "Identity.hpp"
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#include "InetAddress.hpp"
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#include "MAC.hpp"
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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// Max things per CertificateOfOwnership
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#define ZT_CERTIFICATEOFOWNERSHIP_MAX_THINGS 16
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// Maximum size of a thing's value field in bytes
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#define ZT_CERTIFICATEOFOWNERSHIP_MAX_THING_VALUE_SIZE 16
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namespace ZeroTier {
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class RuntimeEnvironment;
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/**
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* Certificate indicating ownership of a network identifier
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*/
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class CertificateOfOwnership : public Credential {
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public:
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static inline Credential::Type credentialType()
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{
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return Credential::CREDENTIAL_TYPE_COO;
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}
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enum Thing { THING_NULL = 0, THING_MAC_ADDRESS = 1, THING_IPV4_ADDRESS = 2, THING_IPV6_ADDRESS = 3 };
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CertificateOfOwnership()
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{
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memset(reinterpret_cast<void*>(this), 0, sizeof(CertificateOfOwnership));
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}
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CertificateOfOwnership(const uint64_t nwid, const int64_t ts, const Address& issuedTo, const uint32_t id)
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{
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memset(reinterpret_cast<void*>(this), 0, sizeof(CertificateOfOwnership));
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_networkId = nwid;
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_ts = ts;
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_id = id;
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_issuedTo = issuedTo;
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}
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inline uint64_t networkId() const
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{
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return _networkId;
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}
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inline int64_t timestamp() const
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{
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return _ts;
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}
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inline uint32_t id() const
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{
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return _id;
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}
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inline unsigned int thingCount() const
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{
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return (unsigned int)_thingCount;
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}
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inline Thing thingType(const unsigned int i) const
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{
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return (Thing)_thingTypes[i];
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}
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inline const uint8_t* thingValue(const unsigned int i) const
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{
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return _thingValues[i];
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}
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inline const Address& issuedTo() const
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{
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return _issuedTo;
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}
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inline bool owns(const InetAddress& ip) const
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{
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if (ip.ss_family == AF_INET) {
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return this->_owns(THING_IPV4_ADDRESS, &(reinterpret_cast<const struct sockaddr_in*>(&ip)->sin_addr.s_addr), 4);
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}
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if (ip.ss_family == AF_INET6) {
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return this->_owns(THING_IPV6_ADDRESS, reinterpret_cast<const struct sockaddr_in6*>(&ip)->sin6_addr.s6_addr, 16);
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}
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return false;
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}
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inline bool owns(const MAC& mac) const
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{
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uint8_t tmp[6];
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mac.copyTo(tmp, 6);
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return this->_owns(THING_MAC_ADDRESS, tmp, 6);
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}
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inline void addThing(const InetAddress& ip)
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{
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if (_thingCount >= ZT_CERTIFICATEOFOWNERSHIP_MAX_THINGS) {
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return;
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}
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if (ip.ss_family == AF_INET) {
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_thingTypes[_thingCount] = THING_IPV4_ADDRESS;
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memcpy(_thingValues[_thingCount], &(reinterpret_cast<const struct sockaddr_in*>(&ip)->sin_addr.s_addr), 4);
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++_thingCount;
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}
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else if (ip.ss_family == AF_INET6) {
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_thingTypes[_thingCount] = THING_IPV6_ADDRESS;
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memcpy(_thingValues[_thingCount], reinterpret_cast<const struct sockaddr_in6*>(&ip)->sin6_addr.s6_addr, 16);
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++_thingCount;
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}
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}
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inline void addThing(const MAC& mac)
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{
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if (_thingCount >= ZT_CERTIFICATEOFOWNERSHIP_MAX_THINGS) {
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return;
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}
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_thingTypes[_thingCount] = THING_MAC_ADDRESS;
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mac.copyTo(_thingValues[_thingCount], 6);
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++_thingCount;
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}
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/**
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* @param signer Signing identity, must have private key
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* @return True if signature was successful
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*/
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inline bool sign(const Identity& signer)
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{
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if (signer.hasPrivate()) {
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Buffer<sizeof(CertificateOfOwnership) + 64> tmp;
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_signedBy = signer.address();
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this->serialize(tmp, true);
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_signature = signer.sign(tmp.data(), tmp.size());
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return true;
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}
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return false;
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}
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/**
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* @param RR Runtime environment to allow identity lookup for signedBy
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* @param tPtr Thread pointer to be handed through to any callbacks called as a result of this call
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* @return 0 == OK, 1 == waiting for WHOIS, -1 == BAD signature
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*/
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int verify(const RuntimeEnvironment* RR, void* tPtr) const;
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template <unsigned int C> inline void serialize(Buffer<C>& b, const bool forSign = false) const
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{
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if (forSign) {
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b.append((uint64_t)0x7f7f7f7f7f7f7f7fULL);
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}
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b.append(_networkId);
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b.append(_ts);
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b.append(_flags);
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b.append(_id);
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b.append((uint16_t)_thingCount);
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for (unsigned int i = 0, j = _thingCount; i < j; ++i) {
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b.append((uint8_t)_thingTypes[i]);
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b.append(_thingValues[i], ZT_CERTIFICATEOFOWNERSHIP_MAX_THING_VALUE_SIZE);
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}
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_issuedTo.appendTo(b);
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_signedBy.appendTo(b);
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if (! forSign) {
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b.append((uint8_t)1); // 1 == Ed25519
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b.append((uint16_t)ZT_ECC_SIGNATURE_LEN); // length of signature
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b.append(_signature.data, ZT_ECC_SIGNATURE_LEN);
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}
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b.append((uint16_t)0); // length of additional fields, currently 0
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if (forSign) {
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b.append((uint64_t)0x7f7f7f7f7f7f7f7fULL);
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}
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}
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template <unsigned int C> inline unsigned int deserialize(const Buffer<C>& b, unsigned int startAt = 0)
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{
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unsigned int p = startAt;
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*this = CertificateOfOwnership();
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_networkId = b.template at<uint64_t>(p);
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p += 8;
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_ts = b.template at<uint64_t>(p);
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p += 8;
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_flags = b.template at<uint64_t>(p);
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p += 8;
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_id = b.template at<uint32_t>(p);
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p += 4;
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_thingCount = b.template at<uint16_t>(p);
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p += 2;
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for (unsigned int i = 0, j = _thingCount; i < j; ++i) {
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if (i < ZT_CERTIFICATEOFOWNERSHIP_MAX_THINGS) {
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_thingTypes[i] = (uint8_t)b[p++];
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memcpy(_thingValues[i], b.field(p, ZT_CERTIFICATEOFOWNERSHIP_MAX_THING_VALUE_SIZE), ZT_CERTIFICATEOFOWNERSHIP_MAX_THING_VALUE_SIZE);
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p += ZT_CERTIFICATEOFOWNERSHIP_MAX_THING_VALUE_SIZE;
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}
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}
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_issuedTo.setTo(b.field(p, ZT_ADDRESS_LENGTH), ZT_ADDRESS_LENGTH);
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p += ZT_ADDRESS_LENGTH;
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_signedBy.setTo(b.field(p, ZT_ADDRESS_LENGTH), ZT_ADDRESS_LENGTH);
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p += ZT_ADDRESS_LENGTH;
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if (b[p++] == 1) {
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if (b.template at<uint16_t>(p) != ZT_ECC_SIGNATURE_LEN) {
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throw ZT_EXCEPTION_INVALID_SERIALIZED_DATA_INVALID_CRYPTOGRAPHIC_TOKEN;
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}
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p += 2;
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memcpy(_signature.data, b.field(p, ZT_ECC_SIGNATURE_LEN), ZT_ECC_SIGNATURE_LEN);
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p += ZT_ECC_SIGNATURE_LEN;
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}
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else {
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p += 2 + b.template at<uint16_t>(p);
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}
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p += 2 + b.template at<uint16_t>(p);
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if (p > b.size()) {
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throw ZT_EXCEPTION_INVALID_SERIALIZED_DATA_OVERFLOW;
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}
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return (p - startAt);
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}
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// Provides natural sort order by ID
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inline bool operator<(const CertificateOfOwnership& coo) const
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{
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return (_id < coo._id);
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}
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inline bool operator==(const CertificateOfOwnership& coo) const
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{
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return (memcmp(this, &coo, sizeof(CertificateOfOwnership)) == 0);
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}
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inline bool operator!=(const CertificateOfOwnership& coo) const
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{
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return (memcmp(this, &coo, sizeof(CertificateOfOwnership)) != 0);
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}
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private:
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bool _owns(const Thing& t, const void* v, unsigned int l) const;
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uint64_t _networkId;
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int64_t _ts;
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uint64_t _flags;
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uint32_t _id;
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uint16_t _thingCount;
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uint8_t _thingTypes[ZT_CERTIFICATEOFOWNERSHIP_MAX_THINGS];
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uint8_t _thingValues[ZT_CERTIFICATEOFOWNERSHIP_MAX_THINGS][ZT_CERTIFICATEOFOWNERSHIP_MAX_THING_VALUE_SIZE];
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Address _issuedTo;
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Address _signedBy;
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ECC::Signature _signature;
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};
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} // namespace ZeroTier
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#endif
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