2016-09-23 23:08:38 +00:00
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/*
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* ZeroTier One - Network Virtualization Everywhere
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2019-01-14 18:25:53 +00:00
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* Copyright (C) 2011-2019 ZeroTier, Inc. https://www.zerotier.com/
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2016-09-23 23:08:38 +00:00
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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2019-01-14 18:25:53 +00:00
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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2017-04-28 03:47:25 +00:00
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*
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* --
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*
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* You can be released from the requirements of the license by purchasing
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* a commercial license. Buying such a license is mandatory as soon as you
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* develop commercial closed-source software that incorporates or links
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* directly against ZeroTier software without disclosing the source code
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* of your own application.
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2016-09-23 23:08:38 +00:00
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*/
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#ifndef ZT_REVOCATION_HPP
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#define ZT_REVOCATION_HPP
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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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#include <stdint.h>
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#include "Constants.hpp"
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#include "../include/ZeroTierOne.h"
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2017-04-04 15:07:38 +00:00
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#include "Credential.hpp"
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2016-09-23 23:08:38 +00:00
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#include "Address.hpp"
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#include "C25519.hpp"
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#include "Utils.hpp"
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#include "Buffer.hpp"
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#include "Identity.hpp"
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/**
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* Flag: fast propagation via rumor mill algorithm
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*/
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#define ZT_REVOCATION_FLAG_FAST_PROPAGATE 0x1ULL
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namespace ZeroTier {
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class RuntimeEnvironment;
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/**
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* Revocation certificate to instantaneously revoke a COM, capability, or tag
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*/
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class Revocation : public Credential
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2016-09-23 23:08:38 +00:00
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{
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2019-08-14 21:55:37 +00:00
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friend class Credential;
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public:
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static inline Credential::Type credentialType() { return Credential::CREDENTIAL_TYPE_REVOCATION; }
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2019-08-14 19:48:45 +00:00
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inline Revocation() :
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_id(0),
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_credentialId(0),
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_networkId(0),
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_threshold(0),
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_flags(0),
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_target(),
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_signedBy(),
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_type(Credential::CREDENTIAL_TYPE_NULL),
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_signatureLength(0)
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{
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}
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2017-03-13 13:53:23 +00:00
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/**
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* @param i ID (arbitrary for revocations, currently random)
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* @param nwid Network ID
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* @param cid Credential ID being revoked (0 for all or for COMs, which lack IDs)
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* @param thr Revocation time threshold before which credentials will be revoked
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* @param fl Flags
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* @param tgt Target node whose credential(s) are being revoked
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* @param ct Credential type being revoked
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*/
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inline Revocation(const uint32_t i,const uint64_t nwid,const uint32_t cid,const uint64_t thr,const uint64_t fl,const Address &tgt,const Credential::Type ct) :
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_id(i),
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_credentialId(cid),
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_networkId(nwid),
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_threshold(thr),
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_flags(fl),
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_target(tgt),
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_signedBy(),
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_type(ct),
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_signatureLength(0)
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2019-03-25 19:58:43 +00:00
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{
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}
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inline uint32_t id() const { return _id; }
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inline uint32_t credentialId() const { return _credentialId; }
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inline uint64_t networkId() const { return _networkId; }
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2017-10-02 22:52:57 +00:00
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inline int64_t threshold() const { return _threshold; }
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inline const Address &target() const { return _target; }
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inline const Address &signer() const { return _signedBy; }
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inline Credential::Type type() const { return _type; }
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inline const uint8_t *signature() const { return _signature; }
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inline unsigned int signatureLength() const { return _signatureLength; }
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inline bool fastPropagate() const { return ((_flags & ZT_REVOCATION_FLAG_FAST_PROPAGATE) != 0); }
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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(Revocation) + 64> tmp;
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_signedBy = signer.address();
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this->serialize(tmp,true);
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_signatureLength = signer.sign(tmp.data(),tmp.size(),_signature,sizeof(_signature));
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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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* Verify this revocation's signature
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*
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* @param RR Runtime environment to provide for peer lookup, etc.
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2017-03-28 00:03:17 +00:00
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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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*/
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inline Credential::VerifyResult verify(const RuntimeEnvironment *RR,void *tPtr) const { return _verify(RR,tPtr,*this); }
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template<unsigned int C>
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inline void serialize(Buffer<C> &b,const bool forSign = false) const
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{
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if (forSign) b.append((uint64_t)0x7f7f7f7f7f7f7f7fULL);
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b.append((uint32_t)0); // 4 unused bytes, currently set to 0
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b.append(_id);
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b.append(_networkId);
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b.append((uint32_t)0); // 4 unused bytes, currently set to 0
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b.append(_credentialId);
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b.append(_threshold);
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b.append(_flags);
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_target.appendTo(b);
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_signedBy.appendTo(b);
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b.append((uint8_t)_type);
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if (!forSign) {
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b.append((uint8_t)1);
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b.append((uint16_t)_signatureLength);
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b.append(_signature,_signatureLength);
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}
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// This is the size of any additional fields, currently 0.
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b.append((uint16_t)0);
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if (forSign) b.append((uint64_t)0x7f7f7f7f7f7f7f7fULL);
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}
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template<unsigned int C>
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inline unsigned int deserialize(const Buffer<C> &b,unsigned int startAt = 0)
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{
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*this = Revocation();
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unsigned int p = startAt;
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p += 4; // 4 bytes, currently unused
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_id = b.template at<uint32_t>(p); p += 4;
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_networkId = b.template at<uint64_t>(p); p += 8;
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p += 4; // 4 bytes, currently unused
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_credentialId = b.template at<uint32_t>(p); p += 4;
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_threshold = b.template at<uint64_t>(p); p += 8;
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_flags = b.template at<uint64_t>(p); p += 8;
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_target.setTo(b.field(p,ZT_ADDRESS_LENGTH),ZT_ADDRESS_LENGTH); p += ZT_ADDRESS_LENGTH;
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_signedBy.setTo(b.field(p,ZT_ADDRESS_LENGTH),ZT_ADDRESS_LENGTH); p += ZT_ADDRESS_LENGTH;
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_type = (Credential::Type)b[p++];
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if (b[p++] == 1) {
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_signatureLength = b.template at<uint16_t>(p);
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if (_signatureLength > sizeof(_signature))
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throw ZT_EXCEPTION_INVALID_SERIALIZED_DATA_INVALID_CRYPTOGRAPHIC_TOKEN;
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memcpy(_signature,b.field(p,_signatureLength),_signatureLength);
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2017-02-04 21:17:00 +00:00
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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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2017-07-17 21:21:09 +00:00
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throw ZT_EXCEPTION_INVALID_SERIALIZED_DATA_OVERFLOW;
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2016-09-23 23:08:38 +00:00
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return (p - startAt);
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}
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private:
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uint32_t _id;
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uint32_t _credentialId;
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uint64_t _networkId;
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2017-10-02 22:52:57 +00:00
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int64_t _threshold;
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2016-09-23 23:08:38 +00:00
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uint64_t _flags;
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Address _target;
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Address _signedBy;
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Credential::Type _type;
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2019-07-17 15:52:08 +00:00
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unsigned int _signatureLength;
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uint8_t _signature[ZT_SIGNATURE_BUFFER_SIZE];
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2016-09-23 23:08:38 +00:00
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};
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} // namespace ZeroTier
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#endif
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