X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fdns.cpp;h=8526d5be22bc4735db1a51c1220b49f77700403b;hb=4498f1abd163b140efcbbd9e75173665c9b1c29f;hp=77eacefd95285765b4febfbe64f9593ea7057b18;hpb=e4acbc95b8b6cd5b28d38a2242c02e8ff4991e4a;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/dns.cpp b/src/dns.cpp index 77eacefd9..8526d5be2 100644 --- a/src/dns.cpp +++ b/src/dns.cpp @@ -2,8 +2,8 @@ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * - * InspIRCd: (C) 2002-2008 InspIRCd Development Team - * See: http://www.inspircd.org/wiki/index.php/Credits + * InspIRCd: (C) 2002-2010 InspIRCd Development Team + * See: http://wiki.inspircd.org/Credits * * This program is free but copyrighted software; see * the file COPYING for details. @@ -11,7 +11,7 @@ * --------------------------------------------------- */ -/* $Core: libIRCDasyncdns */ +/* $Core */ /* dns.cpp - Nonblocking DNS functions. @@ -31,20 +31,13 @@ looks like this, walks like this or tastes like this. #include #else #include "inspircd_win32wrapper.h" -#include "inspircd_se_config.h" #endif -#include "dns.h" #include "inspircd.h" #include "socketengine.h" #include "configreader.h" #include "socket.h" -using irc::sockets::insp_inaddr; -using irc::sockets::insp_ntoa; -using irc::sockets::insp_aton; -using irc::sockets::OpenTCPSocket; - /** Masks to mask off the responses we get from the DNSRequest methods */ enum QueryInfo @@ -102,22 +95,20 @@ class DNSRequest DNS* dnsobj; /* DNS caller (where we get our FD from) */ unsigned long ttl; /* Time to live */ std::string orig; /* Original requested name/ip */ - InspIRCd* ServerInstance; - DNSRequest(InspIRCd* Instance, DNS* dns, int id, const std::string &original); + DNSRequest(DNS* dns, int id, const std::string &original); ~DNSRequest(); - DNSInfo ResultIsReady(DNSHeader &h, int length, int result_we_want); + DNSInfo ResultIsReady(DNSHeader &h, int length); int SendRequests(const DNSHeader *header, const int length, QueryType qt); }; class CacheTimer : public Timer { private: - InspIRCd* ServerInstance; DNS* dns; public: - CacheTimer(InspIRCd* Instance, DNS* thisdns) - : Timer(3600, Instance->Time(), true), ServerInstance(Instance), dns(thisdns) { } + CacheTimer(DNS* thisdns) + : Timer(3600, ServerInstance->Time(), true), dns(thisdns) { } virtual void Tick(time_t) { @@ -127,12 +118,16 @@ class CacheTimer : public Timer class RequestTimeout : public Timer { - InspIRCd* ServerInstance; DNSRequest* watch; int watchid; public: - RequestTimeout(unsigned long n, InspIRCd* SI, DNSRequest* watching, int id) : Timer(n, time(NULL)), ServerInstance(SI), watch(watching), watchid(id) + RequestTimeout(unsigned long n, DNSRequest* watching, int id) : Timer(n, ServerInstance->Time()), watch(watching), watchid(id) + { + } + ~RequestTimeout() { + if (ServerInstance->Res) + Tick(0); } void Tick(time_t) @@ -148,19 +143,29 @@ class RequestTimeout : public Timer } ServerInstance->Res->requests[watchid] = NULL; delete watch; - return; } } }; +CachedQuery::CachedQuery(const std::string &res, unsigned int ttl) : data(res) +{ + expires = ServerInstance->Time() + ttl; +} + +int CachedQuery::CalcTTLRemaining() +{ + int n = expires - ServerInstance->Time(); + return (n < 0 ? 0 : n); +} + /* Allocate the processing buffer */ -DNSRequest::DNSRequest(InspIRCd* Instance, DNS* dns, int id, const std::string &original) : dnsobj(dns), ServerInstance(Instance) +DNSRequest::DNSRequest(DNS* dns, int rid, const std::string &original) : dnsobj(dns) { res = new unsigned char[512]; *res = 0; orig = original; - RequestTimeout* RT = new RequestTimeout(Instance->Config->dns_timeout ? Instance->Config->dns_timeout : 5, Instance, this, id); - Instance->Timers->AddTimer(RT); /* The timer manager frees this */ + RequestTimeout* RT = new RequestTimeout(ServerInstance->Config->dns_timeout ? ServerInstance->Config->dns_timeout : 5, this, rid); + ServerInstance->Timers->AddTimer(RT); /* The timer manager frees this */ } /* Deallocate the processing buffer */ @@ -213,39 +218,19 @@ inline void DNS::EmptyHeader(unsigned char *output, const DNSHeader *header, con /** Send requests we have previously built down the UDP socket */ int DNSRequest::SendRequests(const DNSHeader *header, const int length, QueryType qt) { - ServerInstance->Log(DEBUG,"DNSRequest::SendRequests"); + ServerInstance->Logs->Log("RESOLVER", DEBUG,"DNSRequest::SendRequests"); unsigned char payload[sizeof(DNSHeader)]; this->rr_class = 1; this->type = qt; - + DNS::EmptyHeader(payload,header,length); -#ifdef IPV6 - if (this->dnsobj->socketfamily == AF_INET6) - { - sockaddr_in6 addr; - memset(&addr,0,sizeof(addr)); - memcpy(&addr.sin6_addr,&dnsobj->myserver6,sizeof(addr.sin6_addr)); - addr.sin6_family = AF_INET6; - addr.sin6_port = htons(DNS::QUERY_PORT); - if (ServerInstance->SE->SendTo(dnsobj, payload, length + 12, 0, (sockaddr *) &addr, sizeof(addr)) != length+12) - return -1; - } - else -#endif - { - sockaddr_in addr; - memset(&addr,0,sizeof(addr)); - memcpy(&addr.sin_addr.s_addr,&dnsobj->myserver4,sizeof(addr.sin_addr)); - addr.sin_family = AF_INET; - addr.sin_port = htons(DNS::QUERY_PORT); - if (ServerInstance->SE->SendTo(dnsobj, (const char*)payload, length + 12, 0, (sockaddr *) &addr, sizeof(addr)) != length+12) - return -1; - } + if (ServerInstance->SE->SendTo(dnsobj, payload, length + 12, 0, &(dnsobj->myserver.sa), sa_size(dnsobj->myserver)) != length+12) + return -1; - ServerInstance->Log(DEBUG,"Sent OK"); + ServerInstance->Logs->Log("RESOLVER",DEBUG,"Sent OK"); return 0; } @@ -255,15 +240,13 @@ DNSRequest* DNS::AddQuery(DNSHeader *header, int &id, const char* original) /* Is the DNS connection down? */ if (this->GetFd() == -1) return NULL; - - /* Create an id */ - id = this->PRNG() & DNS::MAX_REQUEST_ID; - /* If this id is already 'in flight', pick another. */ - while (requests[id]) - id = this->PRNG() & DNS::MAX_REQUEST_ID; + /* Create an id */ + do { + id = ServerInstance->GenRandomInt(DNS::MAX_REQUEST_ID); + } while (requests[id]); - DNSRequest* req = new DNSRequest(ServerInstance, this, id, original); + DNSRequest* req = new DNSRequest(this, id, original); header->id[0] = req->id[0] = id >> 8; header->id[1] = req->id[1] = id & 0xFF; @@ -310,7 +293,6 @@ int DNS::PruneCache() void DNS::Rehash() { - ip6munge = false; int portpass = 0; if (this->GetFd() > -1) @@ -330,43 +312,22 @@ void DNS::Rehash() this->cache = new dnscache(); } - if ((strstr(ServerInstance->Config->DNSServer,"::ffff:") == (char*)&ServerInstance->Config->DNSServer) || (strstr(ServerInstance->Config->DNSServer,"::FFFF:") == (char*)&ServerInstance->Config->DNSServer)) - { - ServerInstance->Log(DEFAULT,"WARNING: Using IPv4 addresses over IPv6 forces some DNS checks to be disabled."); - ServerInstance->Log(DEFAULT," This should not cause a problem, however it is recommended you migrate"); - ServerInstance->Log(DEFAULT," to a true IPv6 environment."); - this->ip6munge = true; - } - - this->socketfamily = AF_INET; -#ifdef IPV6 - if (strchr(ServerInstance->Config->DNSServer,':')) - { - this->socketfamily = AF_INET6; - inet_pton(AF_INET6, ServerInstance->Config->DNSServer, &this->myserver6); - } - else - { - inet_aton(ServerInstance->Config->DNSServer, &this->myserver4); - portpass = -1; - } -#else - inet_aton(ServerInstance->Config->DNSServer, &this->myserver4); -#endif + irc::sockets::aptosa(ServerInstance->Config->DNSServer, DNS::QUERY_PORT, myserver); /* Initialize mastersocket */ - int s = OpenTCPSocket(ServerInstance->Config->DNSServer, SOCK_DGRAM); + int s = socket(myserver.sa.sa_family, SOCK_DGRAM, 0); this->SetFd(s); - ServerInstance->SE->NonBlocking(this->GetFd()); /* Have we got a socket and is it nonblocking? */ if (this->GetFd() != -1) { + ServerInstance->SE->SetReuse(s); + ServerInstance->SE->NonBlocking(s); /* Bind the port - port 0 INADDR_ANY */ if (!ServerInstance->BindSocket(this->GetFd(), portpass, "", false)) { /* Failed to bind */ - ServerInstance->Log(DEBUG,"Error binding dns socket"); + ServerInstance->Logs->Log("RESOLVER",DEBUG,"Error binding dns socket"); ServerInstance->SE->Shutdown(this, 2); ServerInstance->SE->Close(this); this->SetFd(-1); @@ -377,9 +338,9 @@ void DNS::Rehash() /* Hook the descriptor into the socket engine */ if (ServerInstance && ServerInstance->SE) { - if (!ServerInstance->SE->AddFd(this)) + if (!ServerInstance->SE->AddFd(this, FD_WANT_POLL_READ | FD_WANT_NO_WRITE)) { - ServerInstance->Log(DEFAULT,"Internal error starting DNS - hostnames will NOT resolve."); + ServerInstance->Logs->Log("RESOLVER",DEFAULT,"Internal error starting DNS - hostnames will NOT resolve."); ServerInstance->SE->Shutdown(this, 2); ServerInstance->SE->Close(this); this->SetFd(-1); @@ -389,14 +350,14 @@ void DNS::Rehash() } else { - ServerInstance->Log(DEBUG,"Error creating dns socket"); + ServerInstance->Logs->Log("RESOLVER",DEBUG,"Error creating dns socket"); } } /** Initialise the DNS UDP socket so that we can send requests */ -DNS::DNS(InspIRCd* Instance) : ServerInstance(Instance) +DNS::DNS() { - ServerInstance->Log(DEBUG,"DNS::DNS"); + ServerInstance->Logs->Log("RESOLVER",DEBUG,"DNS::DNS"); /* Clear the Resolver class table */ memset(Classes,0,sizeof(Classes)); @@ -410,7 +371,7 @@ DNS::DNS(InspIRCd* Instance) : ServerInstance(Instance) /* DNS::Rehash() sets this to a valid ptr */ this->cache = NULL; - + /* Again, DNS::Rehash() sets this to a * valid value */ @@ -420,7 +381,7 @@ DNS::DNS(InspIRCd* Instance) : ServerInstance(Instance) */ this->Rehash(); - this->PruneTimer = new CacheTimer(ServerInstance, this); + this->PruneTimer = new CacheTimer(this); ServerInstance->Timers->AddTimer(this->PruneTimer); } @@ -468,7 +429,7 @@ int DNS::GetIP(const char *name) DNSHeader h; int id; int length; - + if ((length = this->MakePayload(name, DNS_QUERY_A, 1, (unsigned char*)&h.payload)) == -1) return -1; @@ -516,38 +477,6 @@ int DNS::GetCName(const char *alias) return id; } -/** Start lookup of an IP address to a hostname */ -int DNS::GetName(const insp_inaddr *ip) -{ - char query[128]; - DNSHeader h; - int id; - int length; - -#ifdef IPV6 - unsigned char* c = (unsigned char*)&ip->s6_addr; - if (c[0] == 0 && c[1] == 0 && c[2] == 0 && c[3] == 0 && - c[4] == 0 && c[5] == 0 && c[6] == 0 && c[7] == 0 && - c[8] == 0 && c[9] == 0 && c[10] == 0xFF && c[11] == 0xFF) - sprintf(query,"%d.%d.%d.%d.in-addr.arpa",c[15],c[14],c[13],c[12]); - else - DNS::MakeIP6Int(query, (in6_addr*)ip); -#else - unsigned char* c = (unsigned char*)&ip->s_addr; - sprintf(query,"%d.%d.%d.%d.in-addr.arpa",c[3],c[2],c[1],c[0]); -#endif - - if ((length = this->MakePayload(query, DNS_QUERY_PTR, 1, (unsigned char*)&h.payload)) == -1) - return -1; - - DNSRequest* req = this->AddQuery(&h, id, insp_ntoa(*ip)); - - if ((!req) || (req->SendRequests(&h, length, DNS_QUERY_PTR) == -1)) - return -1; - - return id; -} - /** Start lookup of an IP address to a hostname */ int DNS::GetNameForce(const char *ip, ForceProtocol fp) { @@ -555,7 +484,7 @@ int DNS::GetNameForce(const char *ip, ForceProtocol fp) DNSHeader h; int id; int length; -#ifdef SUPPORT_IP6LINKS + if (fp == PROTOCOL_IPV6) { in6_addr i; @@ -568,7 +497,6 @@ int DNS::GetNameForce(const char *ip, ForceProtocol fp) return -1; } else -#endif { in_addr i; if (inet_aton(ip, &i)) @@ -596,7 +524,6 @@ int DNS::GetNameForce(const char *ip, ForceProtocol fp) */ void DNS::MakeIP6Int(char* query, const in6_addr *ip) { -#ifdef SUPPORT_IP6LINKS const char* hex = "0123456789abcdef"; for (int index = 31; index >= 0; index--) /* for() loop steps twice per byte */ { @@ -609,34 +536,25 @@ void DNS::MakeIP6Int(char* query, const in6_addr *ip) *query++ = '.'; /* Seperator */ } strcpy(query,"ip6.arpa"); /* Suffix the string */ -#else - *query = 0; -#endif } /** Return the next id which is ready, and the result attached to it */ -DNSResult DNS::GetResult(int resultnum) +DNSResult DNS::GetResult() { /* Fetch dns query response and decide where it belongs */ DNSHeader header; DNSRequest *req; unsigned char buffer[sizeof(DNSHeader)]; - sockaddr* from = new sockaddr[2]; -#ifdef IPV6 - socklen_t x = this->socketfamily == AF_INET ? sizeof(sockaddr_in) : sizeof(sockaddr_in6); -#else - socklen_t x = sizeof(sockaddr_in); -#endif - const char* ipaddr_from; - unsigned short int port_from = 0; + irc::sockets::sockaddrs from; + memset(&from, 0, sizeof(from)); + socklen_t x = sizeof(from); - int length = ServerInstance->SE->RecvFrom(this, (char*)buffer, sizeof(DNSHeader), 0, from, &x); + int length = ServerInstance->SE->RecvFrom(this, (char*)buffer, sizeof(DNSHeader), 0, &from.sa, &x); /* Did we get the whole header? */ if (length < 12) { /* Nope - something screwed up. */ - delete[] from; return DNSResult(-1,"",0,""); } @@ -645,35 +563,13 @@ DNSResult DNS::GetResult(int resultnum) * is not 53. * A user could in theory still spoof dns packets anyway * but this is less trivial than just sending garbage - * to the client, which is possible without this check. + * to the server, which is possible without this check. * * -- Thanks jilles for pointing this one out. */ -#ifdef IPV6 - char nbuf[MAXBUF]; - if (this->socketfamily == AF_INET6) - { - ipaddr_from = inet_ntop(AF_INET6, &((sockaddr_in6*)from)->sin6_addr, nbuf, sizeof(nbuf)); - port_from = ntohs(((sockaddr_in6*)from)->sin6_port); - } - else -#endif - { - ipaddr_from = inet_ntoa(((sockaddr_in*)from)->sin_addr); - port_from = ntohs(((sockaddr_in*)from)->sin_port); - } - - delete[] from; - - /* We cant perform this security check if you're using 4in6. - * Tough luck to you, choose one or't other! - */ - if (!ip6munge) + if (memcmp(&from, &myserver, sizeof(irc::sockets::sockaddrs))) { - if ((port_from != DNS::QUERY_PORT) || (strcasecmp(ipaddr_from, ServerInstance->Config->DNSServer))) - { - return DNSResult(-1,"",0,""); - } + return DNSResult(-1,"",0,""); } /* Put the read header info into a header class */ @@ -702,7 +598,7 @@ DNSResult DNS::GetResult(int resultnum) * When its finished it will return a DNSInfo which is a pair of * unsigned char* resource record data, and an error message. */ - DNSInfo data = req->ResultIsReady(header, length, resultnum); + DNSInfo data = req->ResultIsReady(header, length); std::string resultstr; /* Check if we got a result, if we didnt, its an error */ @@ -768,7 +664,6 @@ DNSResult DNS::GetResult(int resultnum) default: break; - } /* Build the reply with the id and hostname/ip in it */ @@ -779,7 +674,7 @@ DNSResult DNS::GetResult(int resultnum) } /** A result is ready, process it */ -DNSInfo DNSRequest::ResultIsReady(DNSHeader &header, int length, int result_we_want) +DNSInfo DNSRequest::ResultIsReady(DNSHeader &header, int length) { int i = 0; int q = 0; @@ -791,6 +686,7 @@ DNSInfo DNSRequest::ResultIsReady(DNSHeader &header, int length, int result_we_w rr.type = DNS_QUERY_NONE; rr.rdlength = 0; rr.ttl = 1; /* GCC is a whiney bastard -- see the XXX below. */ + rr.rr_class = 0; /* Same for VC++ */ if (!(header.flags1 & FLAGS_MASK_QR)) return std::make_pair((unsigned char*)NULL,"Not a query result"); @@ -849,10 +745,10 @@ DNSInfo DNSRequest::ResultIsReady(DNSHeader &header, int length, int result_we_w return std::make_pair((unsigned char*)NULL,"Incorrectly sized DNS reply"); /* XXX: We actually initialise 'rr' here including its ttl field */ - if (curanswer == result_we_want) - DNS::FillResourceRecord(&rr,&header.payload[i]); - + DNS::FillResourceRecord(&rr,&header.payload[i]); + i += 10; + ServerInstance->Logs->Log("RESOLVER",DEBUG,"Resolver: rr.type is %d and this.type is %d rr.class %d this.class %d", rr.type, this->type, rr.rr_class, this->rr_class); if (rr.type != this->type) { curanswer++; @@ -868,7 +764,7 @@ DNSInfo DNSRequest::ResultIsReady(DNSHeader &header, int length, int result_we_w break; } if ((unsigned int)curanswer == header.ancount) - return std::make_pair((unsigned char*)NULL,"No more answers (" + ConvToStr(header.ancount) + " answers, wanted #" + ConvToStr(result_we_want) + ")"); + return std::make_pair((unsigned char*)NULL,"No A, AAAA or PTR type answers (" + ConvToStr(header.ancount) + " answers)"); if (i + rr.rdlength > (unsigned int)length) return std::make_pair((unsigned char*)NULL,"Resource record larger than stated"); @@ -933,7 +829,8 @@ DNS::~DNS() ServerInstance->SE->Shutdown(this, 2); ServerInstance->SE->Close(this); ServerInstance->Timers->DelTimer(this->PruneTimer); - delete this->PruneTimer; + if (cache) + delete cache; } CachedQuery* DNS::GetCache(const std::string &source) @@ -944,7 +841,7 @@ CachedQuery* DNS::GetCache(const std::string &source) else return NULL; } - + void DNS::DelCache(const std::string &source) { cache->erase(source.c_str()); @@ -953,13 +850,13 @@ void DNS::DelCache(const std::string &source) void Resolver::TriggerCachedResult() { if (CQ) - OnLookupComplete(CQ->data, time_left, true, 0); + OnLookupComplete(CQ->data, time_left, true); } /** High level abstraction of dns used by application at large */ -Resolver::Resolver(InspIRCd* Instance, const std::string &source, QueryType qt, bool &cached, Module* creator) : ServerInstance(Instance), Creator(creator), input(source), querytype(qt) +Resolver::Resolver(const std::string &source, QueryType qt, bool &cached, Module* creator) : Creator(creator), input(source), querytype(qt) { - ServerInstance->Log(DEBUG,"Resolver::Resolver"); + ServerInstance->Logs->Log("RESOLVER",DEBUG,"Resolver::Resolver"); cached = false; CQ = ServerInstance->Res->GetCache(source); @@ -977,28 +874,12 @@ Resolver::Resolver(InspIRCd* Instance, const std::string &source, QueryType qt, } } - insp_inaddr binip; - switch (querytype) { case DNS_QUERY_A: this->myid = ServerInstance->Res->GetIP(source.c_str()); break; - case DNS_QUERY_PTR: - if (insp_aton(source.c_str(), &binip) > 0) - { - /* Valid ip address */ - this->myid = ServerInstance->Res->GetName(&binip); - } - else - { - this->OnError(RESOLVER_BADIP, "Bad IP address for reverse lookup"); - throw ModuleException("Resolver: Bad IP address"); - return; - } - break; - case DNS_QUERY_PTR4: querytype = DNS_QUERY_PTR; this->myid = ServerInstance->Res->GetNameForce(source.c_str(), PROTOCOL_IPV4); @@ -1030,7 +911,7 @@ Resolver::Resolver(InspIRCd* Instance, const std::string &source, QueryType qt, } else { - ServerInstance->Log(DEBUG,"DNS request id %d", this->myid); + ServerInstance->Logs->Log("RESOLVER",DEBUG,"DNS request id %d", this->myid); } } @@ -1061,15 +942,14 @@ Module* Resolver::GetCreator() void DNS::HandleEvent(EventType, int) { /* Fetch the id and result of the next available packet */ - int resultnum = 0; DNSResult res(0,"",0,""); res.id = 0; - ServerInstance->Log(DEBUG,"Handle DNS event"); + ServerInstance->Logs->Log("RESOLVER",DEBUG,"Handle DNS event"); + + res = this->GetResult(); - res = this->GetResult(resultnum); + ServerInstance->Logs->Log("RESOLVER",DEBUG,"Result id %d", res.id); - ServerInstance->Log(DEBUG,"Result %d id %d", resultnum, res.id); - /* Is there a usable request id? */ if (res.id != -1) { @@ -1096,27 +976,25 @@ void DNS::HandleEvent(EventType, int) { if (ServerInstance && ServerInstance->stats) ServerInstance->stats->statsDnsGood++; - + if (!this->GetCache(res.original.c_str())) this->cache->insert(std::make_pair(res.original.c_str(), CachedQuery(res.result, res.ttl))); - Classes[res.id]->OnLookupComplete(res.result, res.ttl, false, resultnum); + Classes[res.id]->OnLookupComplete(res.result, res.ttl, false); delete Classes[res.id]; Classes[res.id] = NULL; } } - + if (ServerInstance && ServerInstance->stats) ServerInstance->stats->statsDns++; } - - resultnum++; } - + /** Add a derived Resolver to the working set */ bool DNS::AddResolverClass(Resolver* r) { - ServerInstance->Log(DEBUG,"AddResolverClass %08lx", r); + ServerInstance->Logs->Log("RESOLVER",DEBUG,"AddResolverClass 0x%08lx", (unsigned long)r); /* Check the pointers validity and the id's validity */ if ((r) && (r->GetId() > -1)) { @@ -1154,24 +1032,10 @@ void DNS::CleanResolvers(Module* module) { if (Classes[i]->GetCreator() == module) { - Classes[i]->OnError(RESLOVER_FORCEUNLOAD, "Parent module is unloading"); + Classes[i]->OnError(RESOLVER_FORCEUNLOAD, "Parent module is unloading"); delete Classes[i]; Classes[i] = NULL; } } } } - -/** Generate pseudo-random number */ -unsigned long DNS::PRNG() -{ - unsigned long val = 0; - timeval n; - serverstats* s = ServerInstance->stats; - gettimeofday(&n,NULL); - val = (n.tv_usec ^ getpid() ^ geteuid() ^ (this->currid++)) ^ s->statsAccept + n.tv_sec; - val = val + s->statsCollisions ^ s->statsDnsGood - s->statsDnsBad; - val += (s->statsConnects ^ (unsigned long)s->statsSent ^ (unsigned long)s->statsRecv) - ServerInstance->Config->ports.size(); - return val; -} -