mirror of
https://github.com/ZeroTier/ZeroTierOne
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clang-format
This commit is contained in:
Adam Ierymenko
parent
d45f280cb7
commit
ba2a4a605c
140 changed files with 19214 additions and 17403 deletions
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@ -11,29 +11,28 @@
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*/
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/****/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include "Arp.hpp"
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#include "OSUtils.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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namespace ZeroTier {
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static const uint8_t ARP_REQUEST_HEADER[8] = { 0x00,0x01,0x08,0x00,0x06,0x04,0x00,0x01 };
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static const uint8_t ARP_RESPONSE_HEADER[8] = { 0x00,0x01,0x08,0x00,0x06,0x04,0x00,0x02 };
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static const uint8_t ARP_REQUEST_HEADER[8] = { 0x00, 0x01, 0x08, 0x00, 0x06, 0x04, 0x00, 0x01 };
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static const uint8_t ARP_RESPONSE_HEADER[8] = { 0x00, 0x01, 0x08, 0x00, 0x06, 0x04, 0x00, 0x02 };
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Arp::Arp() :
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_cache(256),
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_lastCleaned(OSUtils::now())
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Arp::Arp() : _cache(256), _lastCleaned(OSUtils::now())
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{
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}
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void Arp::addLocal(uint32_t ip,const MAC &mac)
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void Arp::addLocal(uint32_t ip, const MAC& mac)
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{
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_ArpEntry &e = _cache[ip];
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e.lastQuerySent = 0; // local IP
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e.lastResponseReceived = 0; // local IP
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_ArpEntry& e = _cache[ip];
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e.lastQuerySent = 0; // local IP
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e.lastResponseReceived = 0; // local IP
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e.mac = mac;
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e.local = true;
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}
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@ -43,7 +42,7 @@ void Arp::remove(uint32_t ip)
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_cache.erase(ip);
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}
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uint32_t Arp::processIncomingArp(const void *arp,unsigned int len,void *response,unsigned int &responseLen,MAC &responseDest)
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uint32_t Arp::processIncomingArp(const void* arp, unsigned int len, void* response, unsigned int& responseLen, MAC& responseDest)
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{
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const uint64_t now = OSUtils::now();
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uint32_t ip = 0;
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@ -52,25 +51,26 @@ uint32_t Arp::processIncomingArp(const void *arp,unsigned int len,void *response
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responseDest.zero();
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if (len >= 28) {
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if (!memcmp(arp,ARP_REQUEST_HEADER,8)) {
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if (! memcmp(arp, ARP_REQUEST_HEADER, 8)) {
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// Respond to ARP requests for locally-known IPs
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_ArpEntry *targetEntry = _cache.get(reinterpret_cast<const uint32_t *>(arp)[6]);
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if ((targetEntry)&&(targetEntry->local)) {
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memcpy(response,ARP_RESPONSE_HEADER,8);
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targetEntry->mac.copyTo(reinterpret_cast<uint8_t *>(response) + 8,6);
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memcpy(reinterpret_cast<uint8_t *>(response) + 14,reinterpret_cast<const uint8_t *>(arp) + 24,4);
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memcpy(reinterpret_cast<uint8_t *>(response) + 18,reinterpret_cast<const uint8_t *>(arp) + 8,10);
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_ArpEntry* targetEntry = _cache.get(reinterpret_cast<const uint32_t*>(arp)[6]);
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if ((targetEntry) && (targetEntry->local)) {
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memcpy(response, ARP_RESPONSE_HEADER, 8);
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targetEntry->mac.copyTo(reinterpret_cast<uint8_t*>(response) + 8, 6);
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memcpy(reinterpret_cast<uint8_t*>(response) + 14, reinterpret_cast<const uint8_t*>(arp) + 24, 4);
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memcpy(reinterpret_cast<uint8_t*>(response) + 18, reinterpret_cast<const uint8_t*>(arp) + 8, 10);
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responseLen = 28;
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responseDest.setTo(reinterpret_cast<const uint8_t *>(arp) + 8,6);
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responseDest.setTo(reinterpret_cast<const uint8_t*>(arp) + 8, 6);
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}
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} else if (!memcmp(arp,ARP_RESPONSE_HEADER,8)) {
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}
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else if (! memcmp(arp, ARP_RESPONSE_HEADER, 8)) {
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// Learn cache entries for remote IPs from relevant ARP replies
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uint32_t responseIp = 0;
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memcpy(&responseIp,reinterpret_cast<const uint8_t *>(arp) + 14,4);
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_ArpEntry *queryEntry = _cache.get(responseIp);
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if ((queryEntry)&&(!queryEntry->local)&&((now - queryEntry->lastQuerySent) <= ZT_ARP_QUERY_MAX_TTL)) {
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memcpy(&responseIp, reinterpret_cast<const uint8_t*>(arp) + 14, 4);
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_ArpEntry* queryEntry = _cache.get(responseIp);
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if ((queryEntry) && (! queryEntry->local) && ((now - queryEntry->lastQuerySent) <= ZT_ARP_QUERY_MAX_TTL)) {
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queryEntry->lastResponseReceived = now;
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queryEntry->mac.setTo(reinterpret_cast<const uint8_t *>(arp) + 8,6);
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queryEntry->mac.setTo(reinterpret_cast<const uint8_t*>(arp) + 8, 6);
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ip = responseIp;
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}
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}
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@ -78,11 +78,11 @@ uint32_t Arp::processIncomingArp(const void *arp,unsigned int len,void *response
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if ((now - _lastCleaned) >= ZT_ARP_EXPIRE) {
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_lastCleaned = now;
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Hashtable< uint32_t,_ArpEntry >::Iterator i(_cache);
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uint32_t *k = (uint32_t *)0;
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_ArpEntry *v = (_ArpEntry *)0;
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while (i.next(k,v)) {
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if ((!v->local)&&((now - v->lastResponseReceived) >= ZT_ARP_EXPIRE))
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Hashtable<uint32_t, _ArpEntry>::Iterator i(_cache);
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uint32_t* k = (uint32_t*)0;
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_ArpEntry* v = (_ArpEntry*)0;
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while (i.next(k, v)) {
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if ((! v->local) && ((now - v->lastResponseReceived) >= ZT_ARP_EXPIRE))
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_cache.erase(*k);
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}
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}
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@ -90,27 +90,32 @@ uint32_t Arp::processIncomingArp(const void *arp,unsigned int len,void *response
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return ip;
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}
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MAC Arp::query(const MAC &localMac,uint32_t localIp,uint32_t targetIp,void *query,unsigned int &queryLen,MAC &queryDest)
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MAC Arp::query(const MAC& localMac, uint32_t localIp, uint32_t targetIp, void* query, unsigned int& queryLen, MAC& queryDest)
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{
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const uint64_t now = OSUtils::now();
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_ArpEntry &e = _cache[targetIp];
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_ArpEntry& e = _cache[targetIp];
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if ( ((e.mac)&&((now - e.lastResponseReceived) >= (ZT_ARP_EXPIRE / 3))) ||
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((!e.mac)&&((now - e.lastQuerySent) >= ZT_ARP_QUERY_INTERVAL)) ) {
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if (((e.mac) && ((now - e.lastResponseReceived) >= (ZT_ARP_EXPIRE / 3))) || ((! e.mac) && ((now - e.lastQuerySent) >= ZT_ARP_QUERY_INTERVAL))) {
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e.lastQuerySent = now;
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uint8_t *q = reinterpret_cast<uint8_t *>(query);
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memcpy(q,ARP_REQUEST_HEADER,8); q += 8; // ARP request header information, always the same
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localMac.copyTo(q,6); q += 6; // sending host MAC address
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memcpy(q,&localIp,4); q += 4; // sending host IP (IP already in big-endian byte order)
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memset(q,0,6); q += 6; // sending zeros for target MAC address as thats what we want to find
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memcpy(q,&targetIp,4); // target IP address for resolution (IP already in big-endian byte order)
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uint8_t* q = reinterpret_cast<uint8_t*>(query);
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memcpy(q, ARP_REQUEST_HEADER, 8);
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q += 8; // ARP request header information, always the same
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localMac.copyTo(q, 6);
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q += 6; // sending host MAC address
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memcpy(q, &localIp, 4);
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q += 4; // sending host IP (IP already in big-endian byte order)
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memset(q, 0, 6);
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q += 6; // sending zeros for target MAC address as thats what we want to find
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memcpy(q, &targetIp, 4); // target IP address for resolution (IP already in big-endian byte order)
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queryLen = 28;
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if (e.mac)
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queryDest = e.mac; // confirmation query, send directly to address holder
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else queryDest = (uint64_t)0xffffffffffffULL; // broadcast query
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} else {
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queryDest = e.mac; // confirmation query, send directly to address holder
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else
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queryDest = (uint64_t)0xffffffffffffULL; // broadcast query
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}
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else {
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queryLen = 0;
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queryDest.zero();
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}
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@ -118,4 +123,4 @@ MAC Arp::query(const MAC &localMac,uint32_t localIp,uint32_t targetIp,void *quer
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return e.mac;
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}
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} // namespace ZeroTier
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} // namespace ZeroTier
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