github/ZeroTierOne
1
0
Fork 0
mirror of https://github.com/ZeroTier/ZeroTierOne synced 2025-08-14 02:27:38 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

clang-format this branch

Browse source
This commit is contained in:
Adam Ierymenko 2025-07-03 12:02:18 -04:00
commit 342fa9d33f
No known key found for this signature in database
GPG key ID: C8877CF2D7A5D7F3
135 changed files with 42729 additions and 42439 deletions
Download patch file Download diff file Expand all files Collapse all files

144
osdep/Arp.cpp
View file

@ -30,97 +30,97 @@ Arp::Arp() : _cache(256), _lastCleaned(OSUtils::now())
void Arp::addLocal(uint32_t ip, const MAC& mac)
{
_ArpEntry& e = _cache[ip];
e.lastQuerySent = 0; // local IP
e.lastResponseReceived = 0; // local IP
e.mac = mac;
e.local = true;
_ArpEntry& e = _cache[ip];
e.lastQuerySent = 0; // local IP
e.lastResponseReceived = 0; // local IP
e.mac = mac;
e.local = true;
}
void Arp::remove(uint32_t ip)
{
_cache.erase(ip);
_cache.erase(ip);
}
uint32_t Arp::processIncomingArp(const void* arp, unsigned int len, void* response, unsigned int& responseLen, MAC& responseDest)
{
const uint64_t now = OSUtils::now();
uint32_t ip = 0;
const uint64_t now = OSUtils::now();
uint32_t ip = 0;
responseLen = 0;
responseDest.zero();
responseLen = 0;
responseDest.zero();
if (len >= 28) {
if (! memcmp(arp, ARP_REQUEST_HEADER, 8)) {
// Respond to ARP requests for locally-known IPs
_ArpEntry* targetEntry = _cache.get(reinterpret_cast<const uint32_t*>(arp)[6]);
if ((targetEntry) && (targetEntry->local)) {
memcpy(response, ARP_RESPONSE_HEADER, 8);
targetEntry->mac.copyTo(reinterpret_cast<uint8_t*>(response) + 8, 6);
memcpy(reinterpret_cast<uint8_t*>(response) + 14, reinterpret_cast<const uint8_t*>(arp) + 24, 4);
memcpy(reinterpret_cast<uint8_t*>(response) + 18, reinterpret_cast<const uint8_t*>(arp) + 8, 10);
responseLen = 28;
responseDest.setTo(reinterpret_cast<const uint8_t*>(arp) + 8, 6);
}
}
else if (! memcmp(arp, ARP_RESPONSE_HEADER, 8)) {
// Learn cache entries for remote IPs from relevant ARP replies
uint32_t responseIp = 0;
memcpy(&responseIp, reinterpret_cast<const uint8_t*>(arp) + 14, 4);
_ArpEntry* queryEntry = _cache.get(responseIp);
if ((queryEntry) && (! queryEntry->local) && ((now - queryEntry->lastQuerySent) <= ZT_ARP_QUERY_MAX_TTL)) {
queryEntry->lastResponseReceived = now;
queryEntry->mac.setTo(reinterpret_cast<const uint8_t*>(arp) + 8, 6);
ip = responseIp;
}
}
}
if (len >= 28) {
if (! memcmp(arp, ARP_REQUEST_HEADER, 8)) {
// Respond to ARP requests for locally-known IPs
_ArpEntry* targetEntry = _cache.get(reinterpret_cast<const uint32_t*>(arp)[6]);
if ((targetEntry) && (targetEntry->local)) {
memcpy(response, ARP_RESPONSE_HEADER, 8);
targetEntry->mac.copyTo(reinterpret_cast<uint8_t*>(response) + 8, 6);
memcpy(reinterpret_cast<uint8_t*>(response) + 14, reinterpret_cast<const uint8_t*>(arp) + 24, 4);
memcpy(reinterpret_cast<uint8_t*>(response) + 18, reinterpret_cast<const uint8_t*>(arp) + 8, 10);
responseLen = 28;
responseDest.setTo(reinterpret_cast<const uint8_t*>(arp) + 8, 6);
}
}
else if (! memcmp(arp, ARP_RESPONSE_HEADER, 8)) {
// Learn cache entries for remote IPs from relevant ARP replies
uint32_t responseIp = 0;
memcpy(&responseIp, reinterpret_cast<const uint8_t*>(arp) + 14, 4);
_ArpEntry* queryEntry = _cache.get(responseIp);
if ((queryEntry) && (! queryEntry->local) && ((now - queryEntry->lastQuerySent) <= ZT_ARP_QUERY_MAX_TTL)) {
queryEntry->lastResponseReceived = now;
queryEntry->mac.setTo(reinterpret_cast<const uint8_t*>(arp) + 8, 6);
ip = responseIp;
}
}
}
if ((now - _lastCleaned) >= ZT_ARP_EXPIRE) {
_lastCleaned = now;
Hashtable<uint32_t, _ArpEntry>::Iterator i(_cache);
uint32_t* k = (uint32_t*)0;
_ArpEntry* v = (_ArpEntry*)0;
while (i.next(k, v)) {
if ((! v->local) && ((now - v->lastResponseReceived) >= ZT_ARP_EXPIRE))
_cache.erase(*k);
}
}
if ((now - _lastCleaned) >= ZT_ARP_EXPIRE) {
_lastCleaned = now;
Hashtable<uint32_t, _ArpEntry>::Iterator i(_cache);
uint32_t* k = (uint32_t*)0;
_ArpEntry* v = (_ArpEntry*)0;
while (i.next(k, v)) {
if ((! v->local) && ((now - v->lastResponseReceived) >= ZT_ARP_EXPIRE))
_cache.erase(*k);
}
}
return ip;
return ip;
}
MAC Arp::query(const MAC& localMac, uint32_t localIp, uint32_t targetIp, void* query, unsigned int& queryLen, MAC& queryDest)
{
const uint64_t now = OSUtils::now();
const uint64_t now = OSUtils::now();
_ArpEntry& e = _cache[targetIp];
_ArpEntry& e = _cache[targetIp];
if (((e.mac) && ((now - e.lastResponseReceived) >= (ZT_ARP_EXPIRE / 3))) || ((! e.mac) && ((now - e.lastQuerySent) >= ZT_ARP_QUERY_INTERVAL))) {
e.lastQuerySent = now;
if (((e.mac) && ((now - e.lastResponseReceived) >= (ZT_ARP_EXPIRE / 3))) || ((! e.mac) && ((now - e.lastQuerySent) >= ZT_ARP_QUERY_INTERVAL))) {
e.lastQuerySent = now;
uint8_t* q = reinterpret_cast<uint8_t*>(query);
memcpy(q, ARP_REQUEST_HEADER, 8);
q += 8; // ARP request header information, always the same
localMac.copyTo(q, 6);
q += 6; // sending host MAC address
memcpy(q, &localIp, 4);
q += 4; // sending host IP (IP already in big-endian byte order)
memset(q, 0, 6);
q += 6; // sending zeros for target MAC address as thats what we want to find
memcpy(q, &targetIp, 4); // target IP address for resolution (IP already in big-endian byte order)
queryLen = 28;
if (e.mac)
queryDest = e.mac; // confirmation query, send directly to address holder
else
queryDest = (uint64_t)0xffffffffffffULL; // broadcast query
}
else {
queryLen = 0;
queryDest.zero();
}
uint8_t* q = reinterpret_cast<uint8_t*>(query);
memcpy(q, ARP_REQUEST_HEADER, 8);
q += 8; // ARP request header information, always the same
localMac.copyTo(q, 6);
q += 6; // sending host MAC address
memcpy(q, &localIp, 4);
q += 4; // sending host IP (IP already in big-endian byte order)
memset(q, 0, 6);
q += 6; // sending zeros for target MAC address as thats what we want to find
memcpy(q, &targetIp, 4); // target IP address for resolution (IP already in big-endian byte order)
queryLen = 28;
if (e.mac)
queryDest = e.mac; // confirmation query, send directly to address holder
else
queryDest = (uint64_t)0xffffffffffffULL; // broadcast query
}
else {
queryLen = 0;
queryDest.zero();
}
return e.mac;
return e.mac;
}
} // namespace ZeroTier
} // namespace ZeroTier