Revocation work in progress, add WATCH which is TEE with implicit rate sync (thanks JG@DCVC!), and clean up some cruft in Network.
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14 changed files with 809 additions and 597 deletions
178
node/Revocation.hpp
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178
node/Revocation.hpp
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/*
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* ZeroTier One - Network Virtualization Everywhere
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* Copyright (C) 2011-2016 ZeroTier, Inc. https://www.zerotier.com/
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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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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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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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#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
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{
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public:
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enum CredentialType
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{
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CREDENTIAL_TYPE_NIL = 0,
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CREDENTIAL_TYPE_COM = 1,
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CREDENTIAL_TYPE_CAPABILITY = 2,
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CREDENTIAL_TYPE_TAG = 3
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};
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Revocation()
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{
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memset(this,0,sizeof(Revocation));
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}
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Revocation(const uint64_t i,const uint64_t nwid,const uint64_t cid,const uint64_t thr,const uint64_t fl,const Address &tgt,const CredentialType ct) :
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_id(i),
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_networkId(nwid),
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_credentialId(cid),
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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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inline uint64_t id() const { return _id; }
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inline uint64_t networkId() const { return _networkId; }
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inline uint64_t credentialId() const { return _credentialId; }
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inline uint64_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 CredentialType type() const { return _type; }
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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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this->serialize(tmp,true);
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_signedBy = signer.address();
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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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* 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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* @return 0 == OK, 1 == waiting for WHOIS, -1 == BAD signature or chain
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*/
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int verify(const RuntimeEnvironment *RR) const;
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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(_id);
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b.append(_networkId);
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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); // 1 == Ed25519 signature
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b.append((uint16_t)ZT_C25519_SIGNATURE_LEN);
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b.append(_signature.data,ZT_C25519_SIGNATURE_LEN);
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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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memset(this,0,sizeof(Revocation));
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unsigned int p = startAt;
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_id = b.template at<uint64_t>(p); p += 8;
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_networkId = b.template at<uint64_t>(p); p += 8;
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_credentialId = b.template at<uint64_t>(p); p += 8;
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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 = (CredentialType)b[p++];
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if (b[p++] == 1) {
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if (b.template at<uint16_t>(p) == ZT_C25519_SIGNATURE_LEN) {
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p += 2;
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memcpy(_signature.data,b.field(p,ZT_C25519_SIGNATURE_LEN),ZT_C25519_SIGNATURE_LEN);
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p += ZT_C25519_SIGNATURE_LEN;
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} else throw std::runtime_error("invalid signature");
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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 std::runtime_error("extended field overflow");
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return (p - startAt);
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}
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private:
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uint64_t _id;
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uint64_t _networkId;
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uint64_t _credentialId;
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uint64_t _threshold;
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uint64_t _flags;
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Address _target;
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Address _signedBy;
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CredentialType _type;
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C25519::Signature _signature;
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};
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} // namespace ZeroTier
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#endif
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