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255 lines
8.0 KiB
255 lines
8.0 KiB
/* |
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* ZeroTier One - Network Virtualization Everywhere |
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* Copyright (C) 2011-2019 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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* -- |
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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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*/ |
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#ifndef ZT_CERTIFICATEOFOWNERSHIP_HPP |
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#define ZT_CERTIFICATEOFOWNERSHIP_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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#include "Constants.hpp" |
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#include "Credential.hpp" |
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#include "C25519.hpp" |
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#include "Address.hpp" |
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#include "Identity.hpp" |
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#include "Buffer.hpp" |
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#include "InetAddress.hpp" |
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#include "MAC.hpp" |
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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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{ |
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public: |
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static inline Credential::Type credentialType() { return Credential::CREDENTIAL_TYPE_COO; } |
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enum Thing |
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{ |
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THING_NULL = 0, |
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THING_MAC_ADDRESS = 1, |
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THING_IPV4_ADDRESS = 2, |
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THING_IPV6_ADDRESS = 3 |
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}; |
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CertificateOfOwnership() : |
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_networkId(0), |
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_ts(0), |
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_flags(0), |
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_id(0), |
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_thingCount(0) |
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{ |
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memset(_thingTypes,0,sizeof(_thingTypes)); |
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memset(_thingValues,0,sizeof(_thingValues)); |
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memset(_signature.data,0,sizeof(_signature.data)); |
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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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_networkId(nwid), |
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_ts(ts), |
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_flags(0), |
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_id(id), |
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_thingCount(0), |
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_issuedTo(issuedTo) |
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{ |
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memset(_thingTypes,0,sizeof(_thingTypes)); |
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memset(_thingValues,0,sizeof(_thingValues)); |
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memset(_signature.data,0,sizeof(_signature.data)); |
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} |
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inline uint64_t networkId() const { return _networkId; } |
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inline int64_t timestamp() const { return _ts; } |
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inline uint32_t id() const { return _id; } |
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inline unsigned int thingCount() const { return (unsigned int)_thingCount; } |
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inline Thing thingType(const unsigned int i) const { return (Thing)_thingTypes[i]; } |
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inline const uint8_t *thingValue(const unsigned int i) const { return _thingValues[i]; } |
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inline const Address &issuedTo() const { return _issuedTo; } |
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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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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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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) return; |
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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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} 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) return; |
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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> |
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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(_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_C25519_SIGNATURE_LEN); // length of signature |
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b.append(_signature.data,ZT_C25519_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) 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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unsigned int p = startAt; |
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*this = CertificateOfOwnership(); |
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_networkId = b.template at<uint64_t>(p); p += 8; |
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_ts = 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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_id = b.template at<uint32_t>(p); p += 4; |
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_thingCount = b.template at<uint16_t>(p); 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); 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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if (b[p++] == 1) { |
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if (b.template at<uint16_t>(p) != ZT_C25519_SIGNATURE_LEN) |
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throw ZT_EXCEPTION_INVALID_SERIALIZED_DATA_INVALID_CRYPTOGRAPHIC_TOKEN; |
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p += 2; |
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memcpy(_signature.data,b.field(p,ZT_C25519_SIGNATURE_LEN),ZT_C25519_SIGNATURE_LEN); p += ZT_C25519_SIGNATURE_LEN; |
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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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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 { return (_id < coo._id); } |
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inline bool operator==(const CertificateOfOwnership &coo) const { return (memcmp(this,&coo,sizeof(CertificateOfOwnership)) == 0); } |
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inline bool operator!=(const CertificateOfOwnership &coo) const { return (memcmp(this,&coo,sizeof(CertificateOfOwnership)) != 0); } |
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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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C25519::Signature _signature; |
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}; |
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} // namespace ZeroTier |
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#endif
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