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/*
* ZeroTier One - Network Virtualization Everywhere
* Copyright (C) 2011-2016 ZeroTier, Inc. https://www.zerotier.com/
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef ZT_NETWORKCONFIGREQUESTMETADATA_HPP
#define ZT_NETWORKCONFIGREQUESTMETADATA_HPP
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include "Constants.hpp"
#include "NetworkConfig.hpp"
#include "Buffer.hpp"
#include "Packet.hpp"
#include "../version.h"
/**
* Maximum length of the auth field (including terminating NULL, since it's a C-style string)
*
* Actual max length not including NULL is this minus one.
*/
#define ZT_NETWORK_CONFIG_REQUEST_METADATA_MAX_AUTH_LENGTH 2048
namespace ZeroTier {
/**
* Network configuration request meta data
*/
class NetworkConfigRequestMetaData
{
public:
/**
* Construct an empty meta-data object with zero/null values
*/
NetworkConfigRequestMetaData()
{
memset(this,0,sizeof(NetworkConfigRequestMetaData));
}
/**
* Initialize with defaults from this node's config and version
*/
inline void initWithDefaults()
{
memset(this,0,sizeof(NetworkConfigRequestMetaData));
vendor = ZT_VENDOR_ZEROTIER;
platform = ZT_PLATFORM_UNSPECIFIED;
architecture = ZT_ARCHITECTURE_UNSPECIFIED;
majorVersion = ZEROTIER_ONE_VERSION_MAJOR;
minorVersion = ZEROTIER_ONE_VERSION_MINOR;
revision = ZEROTIER_ONE_VERSION_REVISION;
protocolVersion = ZT_PROTO_VERSION;
}
/**
* Zero/null everything
*/
inline void clear()
{
memset(this,0,sizeof(NetworkConfigRequestMetaData));
}
template<unsigned int C>
inline void serialize(Buffer<C> &b) const
{
/* Unlike network config we always send the old fields. Newer network
* controllers will detect the presence of the new serialized data by
* detecting extra data after the terminating NULL. But always sending
* these maintains backward compatibility with old controllers. This
* appends a terminating NULL which seperates the old legacy meta-data
* from the new packed binary format that we send after. */
b.appendCString("majv=" ZEROTIER_ONE_VERSION_MAJOR_S_HEX "\nminv=" ZEROTIER_ONE_VERSION_MINOR_S_HEX "\nrevv=" ZEROTIER_ONE_VERSION_REVISION_S_HEX "\n");
b.append((uint16_t)1); // serialization version
b.append((uint64_t)buildId);
b.append((uint64_t)flags);
b.append((uint16_t)vendor);
b.append((uint16_t)platform);
b.append((uint16_t)architecture);
b.append((uint16_t)majorVersion);
b.append((uint16_t)minorVersion);
b.append((uint16_t)revision);
b.append((uint16_t)protocolVersion);
const unsigned int tl = strlen(auth);
b.append((uint16_t)tl);
b.append((const void *)auth,tl);
b.append((uint16_t)0); // extended bytes, currently 0 since unused
}
template<unsigned int C>
inline unsigned int deserialize(const Buffer<C> &b,unsigned int startAt = 0)
{
memset(this,0,sizeof(NetworkConfigRequestMetaData));
unsigned int p = startAt;
// Seek past old style meta-data
while (b[p]) ++p;
++p;
if (b.template at<uint16_t>(p) != 1)
throw std::invalid_argument("unrecognized version");
p += 2;
buildId = b.template at<uint64_t>(p); p += 8;
flags = b.template at<uint64_t>(p); p += 8;
vendor = (ZT_Vendor)b.template at<uint16_t>(p); p += 2;
platform = (ZT_Platform)b.template at<uint16_t>(p); p += 2;
architecture = (ZT_Architecture)b.template at<uint16_t>(p); p += 2;
majorVersion = b.template at<uint16_t>(p); p += 2;
minorVersion = b.template at<uint16_t>(p); p += 2;
revision = b.template at<uint16_t>(p); p += 2;
protocolVersion = b.template at<uint16_t>(p); p += 2;
const unsigned int tl = b.template at<uint16_t>(p); p += 2;
memcpy(auth,b.field(p,tl),std::max(tl,(unsigned int)(ZT_NETWORK_CONFIG_REQUEST_METADATA_MAX_AUTH_LENGTH - 1)));
p += tl;
p += b.template at<uint16_t>(p) + 2;
return (p - startAt);
}
/**
* Authentication data (e.g. bearer=<token>) as a C-style string (always null terminated)
*/
char auth[ZT_NETWORK_CONFIG_REQUEST_METADATA_MAX_AUTH_LENGTH];
/**
* Build ID (currently unused, must be 0)
*/
uint64_t buildId;
/**
* Flags (currently unused, must be 0)
*/
uint64_t flags;
/**
* ZeroTier vendor or 0 for unspecified
*/
ZT_Vendor vendor;
/**
* ZeroTier platform or 0 for unspecified
*/
ZT_Platform platform;
/**
* ZeroTier architecture or 0 for unspecified
*/
ZT_Architecture architecture;
/**
* ZeroTier software major version
*/
unsigned int majorVersion;
/**
* ZeroTier software minor version
*/
unsigned int minorVersion;
/**
* ZeroTier software revision
*/
unsigned int revision;
/**
* ZeroTier protocol version
*/
unsigned int protocolVersion;
};
} // namespace ZeroTier
#endif
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