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ZeroTierOne/node/NetworkConfig.cpp

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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/>.
*/
#include <stdint.h>
#include "NetworkConfig.hpp"
#include "Utils.hpp"
namespace ZeroTier {
bool NetworkConfig::toDictionary(Dictionary<ZT_NETWORKCONFIG_DICT_CAPACITY> &d,bool includeLegacy) const
{
Buffer<ZT_NETWORKCONFIG_DICT_CAPACITY> tmp;
d.clear();
// Try to put the more human-readable fields first
if (!d.add(ZT_NETWORKCONFIG_DICT_KEY_VERSION,(uint64_t)ZT_NETWORKCONFIG_VERSION)) return false;
if (!d.add(ZT_NETWORKCONFIG_DICT_KEY_NETWORK_ID,this->networkId)) return false;
if (!d.add(ZT_NETWORKCONFIG_DICT_KEY_TIMESTAMP,this->timestamp)) return false;
if (!d.add(ZT_NETWORKCONFIG_DICT_KEY_REVISION,this->revision)) return false;
if (!d.add(ZT_NETWORKCONFIG_DICT_KEY_ISSUED_TO,this->issuedTo)) return false;
if (!d.add(ZT_NETWORKCONFIG_DICT_KEY_FLAGS,this->flags)) return false;
if (!d.add(ZT_NETWORKCONFIG_DICT_KEY_MULTICAST_LIMIT,(uint64_t)this->multicastLimit)) return false;
if (!d.add(ZT_NETWORKCONFIG_DICT_KEY_TYPE,(uint64_t)this->type)) return false;
if (!d.add(ZT_NETWORKCONFIG_DICT_KEY_NAME,this->name)) return false;
#ifdef ZT_SUPPORT_OLD_STYLE_NETCONF
if (includeLegacy) {
if (!d.add(ZT_NETWORKCONFIG_DICT_KEY_ALLOW_PASSIVE_BRIDGING_OLD,this->allowPassiveBridging())) return false;
if (!d.add(ZT_NETWORKCONFIG_DICT_KEY_ENABLE_BROADCAST_OLD,this->enableBroadcast())) return false;
if (!d.add(ZT_NETWORKCONFIG_DICT_KEY_PRIVATE_OLD,this->isPrivate())) return false;
std::string v4s;
for(unsigned int i=0;i<staticIpCount;++i) {
if (this->staticIps[i].ss_family == AF_INET) {
if (v4s.length() > 0)
v4s.push_back(',');
v4s.append(this->staticIps[i].toString());
}
}
if (v4s.length() > 0) {
if (!d.add(ZT_NETWORKCONFIG_DICT_KEY_IPV4_STATIC_OLD,v4s.c_str())) return false;
}
std::string v6s;
for(unsigned int i=0;i<staticIpCount;++i) {
if (this->staticIps[i].ss_family == AF_INET6) {
if (v6s.length() > 0)
v6s.push_back(',');
v6s.append(this->staticIps[i].toString());
}
}
if (v6s.length() > 0) {
if (!d.add(ZT_NETWORKCONFIG_DICT_KEY_IPV6_STATIC_OLD,v6s.c_str())) return false;
}
std::string ets;
unsigned int et = 0;
ZT_VirtualNetworkRuleType lastrt = ZT_NETWORK_RULE_ACTION_ACCEPT;
for(unsigned int i=0;i<ruleCount;++i) {
ZT_VirtualNetworkRuleType rt = (ZT_VirtualNetworkRuleType)(rules[i].t & 0x7f);
if (rt == ZT_NETWORK_RULE_MATCH_ETHERTYPE) {
et = rules[i].v.etherType;
} else if (rt == ZT_NETWORK_RULE_ACTION_ACCEPT) {
if (((int)lastrt < 32)||(lastrt == ZT_NETWORK_RULE_MATCH_ETHERTYPE)) {
if (ets.length() > 0)
ets.push_back(',');
char tmp[16];
Utils::snprintf(tmp,sizeof(tmp),"%x",et);
ets.append(tmp);
}
et = 0;
}
lastrt = rt;
}
if (ets.length() > 0) {
if (!d.add(ZT_NETWORKCONFIG_DICT_KEY_ALLOWED_ETHERNET_TYPES_OLD,ets.c_str())) return false;
}
if (this->com) {
if (!d.add(ZT_NETWORKCONFIG_DICT_KEY_CERTIFICATE_OF_MEMBERSHIP_OLD,this->com.toString().c_str())) return false;
}
std::string ab;
for(unsigned int i=0;i<this->specialistCount;++i) {
if ((this->specialists[i] & ZT_NETWORKCONFIG_SPECIALIST_TYPE_ACTIVE_BRIDGE) != 0) {
if (ab.length() > 0)
ab.push_back(',');
ab.append(Address(this->specialists[i]).toString().c_str());
}
}
if (ab.length() > 0) {
if (!d.add(ZT_NETWORKCONFIG_DICT_KEY_ACTIVE_BRIDGES_OLD,ab.c_str())) return false;
}
}
#endif // ZT_SUPPORT_OLD_STYLE_NETCONF
// Then add binary blobs
if (this->com) {
tmp.clear();
this->com.serialize(tmp);
if (!d.add(ZT_NETWORKCONFIG_DICT_KEY_COM,tmp)) return false;
}
tmp.clear();
for(unsigned int i=0;i<this->specialistCount;++i) {
tmp.append((uint64_t)this->specialists[i]);
}
if (tmp.size()) {
if (!d.add(ZT_NETWORKCONFIG_DICT_KEY_SPECIALISTS,tmp)) return false;
}
tmp.clear();
for(unsigned int i=0;i<this->routeCount;++i) {
reinterpret_cast<const InetAddress *>(&(this->routes[i].target))->serialize(tmp);
reinterpret_cast<const InetAddress *>(&(this->routes[i].via))->serialize(tmp);
tmp.append((uint16_t)this->routes[i].flags);
tmp.append((uint16_t)this->routes[i].metric);
}
if (tmp.size()) {
if (!d.add(ZT_NETWORKCONFIG_DICT_KEY_ROUTES,tmp)) return false;
}
tmp.clear();
for(unsigned int i=0;i<this->staticIpCount;++i) {
this->staticIps[i].serialize(tmp);
}
if (tmp.size()) {
if (!d.add(ZT_NETWORKCONFIG_DICT_KEY_STATIC_IPS,tmp)) return false;
}
tmp.clear();
for(unsigned int i=0;i<this->ruleCount;++i) {
tmp.append((uint8_t)rules[i].t);
switch((ZT_VirtualNetworkRuleType)(rules[i].t & 0x7f)) {
//case ZT_NETWORK_RULE_ACTION_DROP:
//case ZT_NETWORK_RULE_ACTION_ACCEPT:
default:
tmp.append((uint8_t)0);
break;
case ZT_NETWORK_RULE_ACTION_TEE:
case ZT_NETWORK_RULE_ACTION_REDIRECT:
case ZT_NETWORK_RULE_MATCH_SOURCE_ZEROTIER_ADDRESS:
case ZT_NETWORK_RULE_MATCH_DEST_ZEROTIER_ADDRESS:
tmp.append((uint8_t)5);
Address(rules[i].v.zt).appendTo(tmp);
break;
case ZT_NETWORK_RULE_MATCH_VLAN_ID:
tmp.append((uint8_t)2);
tmp.append((uint16_t)rules[i].v.vlanId);
break;
case ZT_NETWORK_RULE_MATCH_VLAN_PCP:
tmp.append((uint8_t)1);
tmp.append((uint8_t)rules[i].v.vlanPcp);
break;
case ZT_NETWORK_RULE_MATCH_VLAN_DEI:
tmp.append((uint8_t)1);
tmp.append((uint8_t)rules[i].v.vlanDei);
break;
case ZT_NETWORK_RULE_MATCH_ETHERTYPE:
tmp.append((uint8_t)2);
tmp.append((uint16_t)rules[i].v.etherType);
break;
case ZT_NETWORK_RULE_MATCH_MAC_SOURCE:
case ZT_NETWORK_RULE_MATCH_MAC_DEST:
tmp.append((uint8_t)6);
tmp.append(rules[i].v.mac,6);
break;
case ZT_NETWORK_RULE_MATCH_IPV4_SOURCE:
case ZT_NETWORK_RULE_MATCH_IPV4_DEST:
tmp.append((uint8_t)5);
tmp.append(&(rules[i].v.ipv4.ip),4);
tmp.append((uint8_t)rules[i].v.ipv4.mask);
break;
case ZT_NETWORK_RULE_MATCH_IPV6_SOURCE:
case ZT_NETWORK_RULE_MATCH_IPV6_DEST:
tmp.append((uint8_t)17);
tmp.append(rules[i].v.ipv6.ip,16);
tmp.append((uint8_t)rules[i].v.ipv6.mask);
break;
case ZT_NETWORK_RULE_MATCH_IP_TOS:
tmp.append((uint8_t)1);
tmp.append((uint8_t)rules[i].v.ipTos);
break;
case ZT_NETWORK_RULE_MATCH_IP_PROTOCOL:
tmp.append((uint8_t)1);
tmp.append((uint8_t)rules[i].v.ipProtocol);
break;
case ZT_NETWORK_RULE_MATCH_IP_SOURCE_PORT_RANGE:
case ZT_NETWORK_RULE_MATCH_IP_DEST_PORT_RANGE:
tmp.append((uint8_t)4);
tmp.append((uint16_t)rules[i].v.port[0]);
tmp.append((uint16_t)rules[i].v.port[1]);
break;
case ZT_NETWORK_RULE_MATCH_CHARACTERISTICS:
tmp.append((uint8_t)16);
tmp.append((uint64_t)rules[i].v.characteristics[0]);
tmp.append((uint64_t)rules[i].v.characteristics[1]);
break;
case ZT_NETWORK_RULE_MATCH_FRAME_SIZE_RANGE:
tmp.append((uint8_t)4);
tmp.append((uint16_t)rules[i].v.frameSize[0]);
tmp.append((uint16_t)rules[i].v.frameSize[1]);
break;
}
}
if (tmp.size()) {
if (!d.add(ZT_NETWORKCONFIG_DICT_KEY_RULES,tmp)) return false;
}
return true;
}
bool NetworkConfig::fromDictionary(const Dictionary<ZT_NETWORKCONFIG_DICT_CAPACITY> &d)
{
try {
Buffer<ZT_NETWORKCONFIG_DICT_CAPACITY> tmp;
char tmp2[ZT_NETWORKCONFIG_DICT_CAPACITY];
memset(this,0,sizeof(NetworkConfig));
// Fields that are always present, new or old
this->networkId = d.getUI(ZT_NETWORKCONFIG_DICT_KEY_NETWORK_ID,0);
if (!this->networkId)
return false;
this->timestamp = d.getUI(ZT_NETWORKCONFIG_DICT_KEY_TIMESTAMP,0);
this->revision = d.getUI(ZT_NETWORKCONFIG_DICT_KEY_REVISION,0);
this->issuedTo = d.getUI(ZT_NETWORKCONFIG_DICT_KEY_ISSUED_TO,0);
if (!this->issuedTo)
return false;
this->multicastLimit = (unsigned int)d.getUI(ZT_NETWORKCONFIG_DICT_KEY_MULTICAST_LIMIT,0);
d.get(ZT_NETWORKCONFIG_DICT_KEY_NAME,this->name,sizeof(this->name));
if (d.getUI(ZT_NETWORKCONFIG_DICT_KEY_VERSION,0) < 6) {
#ifdef ZT_SUPPORT_OLD_STYLE_NETCONF
// Decode legacy fields if version is old
if (d.getB(ZT_NETWORKCONFIG_DICT_KEY_ALLOW_PASSIVE_BRIDGING_OLD))
this->flags |= ZT_NETWORKCONFIG_FLAG_ALLOW_PASSIVE_BRIDGING;
if (d.getB(ZT_NETWORKCONFIG_DICT_KEY_ENABLE_BROADCAST_OLD))
this->flags |= ZT_NETWORKCONFIG_FLAG_ENABLE_BROADCAST;
this->flags |= ZT_NETWORKCONFIG_FLAG_ENABLE_IPV6_NDP_EMULATION; // always enable for old-style netconf
this->type = (d.getB(ZT_NETWORKCONFIG_DICT_KEY_PRIVATE_OLD,true)) ? ZT_NETWORK_TYPE_PRIVATE : ZT_NETWORK_TYPE_PUBLIC;
if (d.get(ZT_NETWORKCONFIG_DICT_KEY_IPV4_STATIC_OLD,tmp2,sizeof(tmp2)) > 0) {
char *saveptr = (char *)0;
for(char *f=Utils::stok(tmp2,",",&saveptr);(f);f=Utils::stok((char *)0,",",&saveptr)) {
if (this->staticIpCount >= ZT_MAX_ZT_ASSIGNED_ADDRESSES) break;
InetAddress ip(f);
if (!ip.isNetwork())
this->staticIps[this->staticIpCount++] = ip;
}
}
if (d.get(ZT_NETWORKCONFIG_DICT_KEY_IPV6_STATIC_OLD,tmp2,sizeof(tmp2)) > 0) {
char *saveptr = (char *)0;
for(char *f=Utils::stok(tmp2,",",&saveptr);(f);f=Utils::stok((char *)0,",",&saveptr)) {
if (this->staticIpCount >= ZT_MAX_ZT_ASSIGNED_ADDRESSES) break;
InetAddress ip(f);
if (!ip.isNetwork())
this->staticIps[this->staticIpCount++] = ip;
}
}
if (d.get(ZT_NETWORKCONFIG_DICT_KEY_CERTIFICATE_OF_MEMBERSHIP_OLD,tmp2,sizeof(tmp2)) > 0) {
this->com.fromString(tmp2);
}
if (d.get(ZT_NETWORKCONFIG_DICT_KEY_ALLOWED_ETHERNET_TYPES_OLD,tmp2,sizeof(tmp2)) > 0) {
char *saveptr = (char *)0;
for(char *f=Utils::stok(tmp2,",",&saveptr);(f);f=Utils::stok((char *)0,",",&saveptr)) {
unsigned int et = Utils::hexStrToUInt(f) & 0xffff;
if ((this->ruleCount + 2) > ZT_MAX_NETWORK_RULES) break;
if (et > 0) {
this->rules[this->ruleCount].t = (uint8_t)ZT_NETWORK_RULE_MATCH_ETHERTYPE;
this->rules[this->ruleCount].v.etherType = (uint16_t)et;
++this->ruleCount;
}
this->rules[this->ruleCount++].t = (uint8_t)ZT_NETWORK_RULE_ACTION_ACCEPT;
}
} else {
this->rules[0].t = ZT_NETWORK_RULE_ACTION_ACCEPT;
this->ruleCount = 1;
}
if (d.get(ZT_NETWORKCONFIG_DICT_KEY_ACTIVE_BRIDGES_OLD,tmp2,sizeof(tmp2)) > 0) {
char *saveptr = (char *)0;
for(char *f=Utils::stok(tmp2,",",&saveptr);(f);f=Utils::stok((char *)0,",",&saveptr)) {
this->addSpecialist(Address(f),ZT_NETWORKCONFIG_SPECIALIST_TYPE_ACTIVE_BRIDGE);
}
}
#else
return false;
#endif // ZT_SUPPORT_OLD_STYLE_NETCONF
} else {
// Otherwise we can use the new fields
this->flags = d.getUI(ZT_NETWORKCONFIG_DICT_KEY_FLAGS,0);
this->type = (ZT_VirtualNetworkType)d.getUI(ZT_NETWORKCONFIG_DICT_KEY_TYPE,(uint64_t)ZT_NETWORK_TYPE_PRIVATE);
if (d.get(ZT_NETWORKCONFIG_DICT_KEY_COM,tmp)) {
this->com.deserialize(tmp,0);
}
if (d.get(ZT_NETWORKCONFIG_DICT_KEY_SPECIALISTS,tmp)) {
unsigned int p = 0;
while (((p + 8) <= tmp.size())&&(specialistCount < ZT_MAX_NETWORK_SPECIALISTS)) {
this->specialists[this->specialistCount++] = tmp.at<uint64_t>(p);
p += 8;
}
}
if (d.get(ZT_NETWORKCONFIG_DICT_KEY_ROUTES,tmp)) {
unsigned int p = 0;
while ((p < tmp.size())&&(routeCount < ZT_MAX_NETWORK_ROUTES)) {
p += reinterpret_cast<InetAddress *>(&(this->routes[this->routeCount].target))->deserialize(tmp,p);
p += reinterpret_cast<InetAddress *>(&(this->routes[this->routeCount].via))->deserialize(tmp,p);
this->routes[this->routeCount].flags = tmp.at<uint16_t>(p); p += 2;
this->routes[this->routeCount].metric = tmp.at<uint16_t>(p); p += 2;
++this->routeCount;
}
}
if (d.get(ZT_NETWORKCONFIG_DICT_KEY_STATIC_IPS,tmp)) {
unsigned int p = 0;
while ((p < tmp.size())&&(staticIpCount < ZT_MAX_ZT_ASSIGNED_ADDRESSES)) {
p += this->staticIps[this->staticIpCount++].deserialize(tmp,p);
}
}
if (d.get(ZT_NETWORKCONFIG_DICT_KEY_RULES,tmp)) {
unsigned int p = 0;
while ((p < tmp.size())&&(ruleCount < ZT_MAX_NETWORK_RULES)) {
rules[ruleCount].t = (uint8_t)tmp[p++];
unsigned int fieldLen = (unsigned int)tmp[p++];
switch((ZT_VirtualNetworkRuleType)(rules[ruleCount].t & 0x7f)) {
default:
break;
case ZT_NETWORK_RULE_ACTION_TEE:
case ZT_NETWORK_RULE_ACTION_REDIRECT:
case ZT_NETWORK_RULE_MATCH_SOURCE_ZEROTIER_ADDRESS:
case ZT_NETWORK_RULE_MATCH_DEST_ZEROTIER_ADDRESS:
rules[ruleCount].v.zt = Address(tmp.field(p,ZT_ADDRESS_LENGTH),ZT_ADDRESS_LENGTH).toInt();
break;
case ZT_NETWORK_RULE_MATCH_VLAN_ID:
rules[ruleCount].v.vlanId = tmp.at<uint16_t>(p);
break;
case ZT_NETWORK_RULE_MATCH_VLAN_PCP:
rules[ruleCount].v.vlanPcp = (uint8_t)tmp[p];
break;
case ZT_NETWORK_RULE_MATCH_VLAN_DEI:
rules[ruleCount].v.vlanDei = (uint8_t)tmp[p];
break;
case ZT_NETWORK_RULE_MATCH_ETHERTYPE:
rules[ruleCount].v.etherType = tmp.at<uint16_t>(p);
break;
case ZT_NETWORK_RULE_MATCH_MAC_SOURCE:
case ZT_NETWORK_RULE_MATCH_MAC_DEST:
memcpy(rules[ruleCount].v.mac,tmp.field(p,6),6);
break;
case ZT_NETWORK_RULE_MATCH_IPV4_SOURCE:
case ZT_NETWORK_RULE_MATCH_IPV4_DEST:
memcpy(&(rules[ruleCount].v.ipv4.ip),tmp.field(p,4),4);
rules[ruleCount].v.ipv4.mask = (uint8_t)tmp[p + 4];
break;
case ZT_NETWORK_RULE_MATCH_IPV6_SOURCE:
case ZT_NETWORK_RULE_MATCH_IPV6_DEST:
memcpy(rules[ruleCount].v.ipv6.ip,tmp.field(p,16),16);
rules[ruleCount].v.ipv6.mask = (uint8_t)tmp[p + 16];
break;
case ZT_NETWORK_RULE_MATCH_IP_TOS:
rules[ruleCount].v.ipTos = (uint8_t)tmp[p];
break;
case ZT_NETWORK_RULE_MATCH_IP_PROTOCOL:
rules[ruleCount].v.ipProtocol = (uint8_t)tmp[p];
break;
case ZT_NETWORK_RULE_MATCH_IP_SOURCE_PORT_RANGE:
case ZT_NETWORK_RULE_MATCH_IP_DEST_PORT_RANGE:
rules[ruleCount].v.port[0] = tmp.at<uint16_t>(p);
rules[ruleCount].v.port[1] = tmp.at<uint16_t>(p + 2);
break;
case ZT_NETWORK_RULE_MATCH_CHARACTERISTICS:
rules[ruleCount].v.characteristics[0] = tmp.at<uint64_t>(p);
rules[ruleCount].v.characteristics[1] = tmp.at<uint64_t>(p + 8);
break;
case ZT_NETWORK_RULE_MATCH_FRAME_SIZE_RANGE:
rules[ruleCount].v.frameSize[0] = tmp.at<uint16_t>(p);
rules[ruleCount].v.frameSize[0] = tmp.at<uint16_t>(p + 2);
break;
}
p += fieldLen;
++ruleCount;
}
}
}
//printf("~~~\n%s\n~~~\n",d.data());
//dump();
//printf("~~~\n");
return true;
} catch ( ... ) {
return false;
}
}
} // namespace ZeroTier
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